reorganizing the first level of folders (trunk/branch folders are not the git way :)

119 files changed, 64440 insertions, 0 deletions

diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/classfile/ByteCode.java b/infrastructure/rhino1_7R1/src/org/mozilla/classfile/ByteCode.java
new file mode 100644
index 0000000..fa4713e
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/classfile/ByteCode.java
@@ -0,0 +1,274 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.classfile;
+
+/**
+ * This class provides opcode values expected by the JVM in Java class files.
+ *
+ * It also provides tables for internal use by the ClassFileWriter.
+ *
+ * @author Roger Lawrence
+ */
+public class ByteCode {
+
+    /**
+     * The byte opcodes defined by the Java Virtual Machine.
+     */
+    public static final int
+        NOP = 0x00,
+        ACONST_NULL = 0x01,
+        ICONST_M1 = 0x02,
+        ICONST_0 = 0x03,
+        ICONST_1 = 0x04,
+        ICONST_2 = 0x05,
+        ICONST_3 = 0x06,
+        ICONST_4 = 0x07,
+        ICONST_5 = 0x08,
+        LCONST_0 = 0x09,
+        LCONST_1 = 0x0A,
+        FCONST_0 = 0x0B,
+        FCONST_1 = 0x0C,
+        FCONST_2 = 0x0D,
+        DCONST_0 = 0x0E,
+        DCONST_1 = 0x0F,
+        BIPUSH = 0x10,
+        SIPUSH = 0x11,
+        LDC = 0x12,
+        LDC_W = 0x13,
+        LDC2_W = 0x14,
+        ILOAD = 0x15,
+        LLOAD = 0x16,
+        FLOAD = 0x17,
+        DLOAD = 0x18,
+        ALOAD = 0x19,
+        ILOAD_0 = 0x1A,
+        ILOAD_1 = 0x1B,
+        ILOAD_2 = 0x1C,
+        ILOAD_3 = 0x1D,
+        LLOAD_0 = 0x1E,
+        LLOAD_1 = 0x1F,
+        LLOAD_2 = 0x20,
+        LLOAD_3 = 0x21,
+        FLOAD_0 = 0x22,
+        FLOAD_1 = 0x23,
+        FLOAD_2 = 0x24,
+        FLOAD_3 = 0x25,
+        DLOAD_0 = 0x26,
+        DLOAD_1 = 0x27,
+        DLOAD_2 = 0x28,
+        DLOAD_3 = 0x29,
+        ALOAD_0 = 0x2A,
+        ALOAD_1 = 0x2B,
+        ALOAD_2 = 0x2C,
+        ALOAD_3 = 0x2D,
+        IALOAD = 0x2E,
+        LALOAD = 0x2F,
+        FALOAD = 0x30,
+        DALOAD = 0x31,
+        AALOAD = 0x32,
+        BALOAD = 0x33,
+        CALOAD = 0x34,
+        SALOAD = 0x35,
+        ISTORE = 0x36,
+        LSTORE = 0x37,
+        FSTORE = 0x38,
+        DSTORE = 0x39,
+        ASTORE = 0x3A,
+        ISTORE_0 = 0x3B,
+        ISTORE_1 = 0x3C,
+        ISTORE_2 = 0x3D,
+        ISTORE_3 = 0x3E,
+        LSTORE_0 = 0x3F,
+        LSTORE_1 = 0x40,
+        LSTORE_2 = 0x41,
+        LSTORE_3 = 0x42,
+        FSTORE_0 = 0x43,
+        FSTORE_1 = 0x44,
+        FSTORE_2 = 0x45,
+        FSTORE_3 = 0x46,
+        DSTORE_0 = 0x47,
+        DSTORE_1 = 0x48,
+        DSTORE_2 = 0x49,
+        DSTORE_3 = 0x4A,
+        ASTORE_0 = 0x4B,
+        ASTORE_1 = 0x4C,
+        ASTORE_2 = 0x4D,
+        ASTORE_3 = 0x4E,
+        IASTORE = 0x4F,
+        LASTORE = 0x50,
+        FASTORE = 0x51,
+        DASTORE = 0x52,
+        AASTORE = 0x53,
+        BASTORE = 0x54,
+        CASTORE = 0x55,
+        SASTORE = 0x56,
+        POP = 0x57,
+        POP2 = 0x58,
+        DUP = 0x59,
+        DUP_X1 = 0x5A,
+        DUP_X2 = 0x5B,
+        DUP2 = 0x5C,
+        DUP2_X1 = 0x5D,
+        DUP2_X2 = 0x5E,
+        SWAP = 0x5F,
+        IADD = 0x60,
+        LADD = 0x61,
+        FADD = 0x62,
+        DADD = 0x63,
+        ISUB = 0x64,
+        LSUB = 0x65,
+        FSUB = 0x66,
+        DSUB = 0x67,
+        IMUL = 0x68,
+        LMUL = 0x69,
+        FMUL = 0x6A,
+        DMUL = 0x6B,
+        IDIV = 0x6C,
+        LDIV = 0x6D,
+        FDIV = 0x6E,
+        DDIV = 0x6F,
+        IREM = 0x70,
+        LREM = 0x71,
+        FREM = 0x72,
+        DREM = 0x73,
+        INEG = 0x74,
+        LNEG = 0x75,
+        FNEG = 0x76,
+        DNEG = 0x77,
+        ISHL = 0x78,
+        LSHL = 0x79,
+        ISHR = 0x7A,
+        LSHR = 0x7B,
+        IUSHR = 0x7C,
+        LUSHR = 0x7D,
+        IAND = 0x7E,
+        LAND = 0x7F,
+        IOR = 0x80,
+        LOR = 0x81,
+        IXOR = 0x82,
+        LXOR = 0x83,
+        IINC = 0x84,
+        I2L = 0x85,
+        I2F = 0x86,
+        I2D = 0x87,
+        L2I = 0x88,
+        L2F = 0x89,
+        L2D = 0x8A,
+        F2I = 0x8B,
+        F2L = 0x8C,
+        F2D = 0x8D,
+        D2I = 0x8E,
+        D2L = 0x8F,
+        D2F = 0x90,
+        I2B = 0x91,
+        I2C = 0x92,
+        I2S = 0x93,
+        LCMP = 0x94,
+        FCMPL = 0x95,
+        FCMPG = 0x96,
+        DCMPL = 0x97,
+        DCMPG = 0x98,
+        IFEQ = 0x99,
+        IFNE = 0x9A,
+        IFLT = 0x9B,
+        IFGE = 0x9C,
+        IFGT = 0x9D,
+        IFLE = 0x9E,
+        IF_ICMPEQ = 0x9F,
+        IF_ICMPNE = 0xA0,
+        IF_ICMPLT = 0xA1,
+        IF_ICMPGE = 0xA2,
+        IF_ICMPGT = 0xA3,
+        IF_ICMPLE = 0xA4,
+        IF_ACMPEQ = 0xA5,
+        IF_ACMPNE = 0xA6,
+        GOTO = 0xA7,
+        JSR = 0xA8,
+        RET = 0xA9,
+        TABLESWITCH = 0xAA,
+        LOOKUPSWITCH = 0xAB,
+        IRETURN = 0xAC,
+        LRETURN = 0xAD,
+        FRETURN = 0xAE,
+        DRETURN = 0xAF,
+        ARETURN = 0xB0,
+        RETURN = 0xB1,
+        GETSTATIC = 0xB2,
+        PUTSTATIC = 0xB3,
+        GETFIELD = 0xB4,
+        PUTFIELD = 0xB5,
+        INVOKEVIRTUAL = 0xB6,
+        INVOKESPECIAL = 0xB7,
+        INVOKESTATIC = 0xB8,
+        INVOKEINTERFACE = 0xB9,
+        NEW = 0xBB,
+        NEWARRAY = 0xBC,
+        ANEWARRAY = 0xBD,
+        ARRAYLENGTH = 0xBE,
+        ATHROW = 0xBF,
+        CHECKCAST = 0xC0,
+        INSTANCEOF = 0xC1,
+        MONITORENTER = 0xC2,
+        MONITOREXIT = 0xC3,
+        WIDE = 0xC4,
+        MULTIANEWARRAY = 0xC5,
+        IFNULL = 0xC6,
+        IFNONNULL = 0xC7,
+        GOTO_W = 0xC8,
+        JSR_W = 0xC9,
+        BREAKPOINT = 0xCA,
+
+        IMPDEP1 = 0xFE,
+        IMPDEP2 = 0xFF;
+
+        /**
+         * Types for the NEWARRAY opcode.
+         */
+        public static final byte
+            T_BOOLEAN = 4,
+            T_CHAR = 5,
+            T_FLOAT = 6,
+            T_DOUBLE = 7,
+            T_BYTE = 8,
+            T_SHORT = 9,
+            T_INT = 10,
+            T_LONG = 11;
+
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/classfile/ClassFileWriter.java b/infrastructure/rhino1_7R1/src/org/mozilla/classfile/ClassFileWriter.java
new file mode 100644
index 0000000..b9c6c96
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/classfile/ClassFileWriter.java
@@ -0,0 +1,3038 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.classfile;
+
+import org.mozilla.javascript.ObjToIntMap;
+import org.mozilla.javascript.ObjArray;
+import org.mozilla.javascript.UintMap;
+
+import java.io.*;
+
+/**
+ * ClassFileWriter
+ *
+ * A ClassFileWriter is used to write a Java class file. Methods are
+ * provided to create fields and methods, and within methods to write
+ * Java bytecodes.
+ *
+ * @author Roger Lawrence
+ */
+public class ClassFileWriter {
+    
+    /**
+     * Thrown for cases where the error in generating the class file is
+     * due to a program size constraints rather than a likely bug in the
+     * compiler.
+     */
+    public static class ClassFileFormatException extends RuntimeException {
+        ClassFileFormatException(String message) {
+            super(message);
+        }
+    }
+
+    /**
+     * Construct a ClassFileWriter for a class.
+     *
+     * @param className the name of the class to write, including
+     *        full package qualification.
+     * @param superClassName the name of the superclass of the class
+     *        to write, including full package qualification.
+     * @param sourceFileName the name of the source file to use for
+     *        producing debug information, or null if debug information
+     *        is not desired
+     */
+    public ClassFileWriter(String className, String superClassName,
+                           String sourceFileName)
+    {
+        generatedClassName = className;
+        itsConstantPool = new ConstantPool(this);
+        itsThisClassIndex = itsConstantPool.addClass(className);
+        itsSuperClassIndex = itsConstantPool.addClass(superClassName);
+        if (sourceFileName != null)
+            itsSourceFileNameIndex = itsConstantPool.addUtf8(sourceFileName);
+        itsFlags = ACC_PUBLIC;
+    }
+
+    public final String getClassName()
+    {
+        return generatedClassName;
+    }
+
+    /**
+     * Add an interface implemented by this class.
+     *
+     * This method may be called multiple times for classes that
+     * implement multiple interfaces.
+     *
+     * @param interfaceName a name of an interface implemented
+     *        by the class being written, including full package
+     *        qualification.
+     */
+    public void addInterface(String interfaceName) {
+        short interfaceIndex = itsConstantPool.addClass(interfaceName);
+        itsInterfaces.add(new Short(interfaceIndex));
+    }
+
+    public static final short
+        ACC_PUBLIC = 0x0001,
+        ACC_PRIVATE = 0x0002,
+        ACC_PROTECTED = 0x0004,
+        ACC_STATIC = 0x0008,
+        ACC_FINAL = 0x0010,
+        ACC_SYNCHRONIZED = 0x0020,
+        ACC_VOLATILE = 0x0040,
+        ACC_TRANSIENT = 0x0080,
+        ACC_NATIVE = 0x0100,
+        ACC_ABSTRACT = 0x0400;
+
+    /**
+     * Set the class's flags.
+     *
+     * Flags must be a set of the following flags, bitwise or'd
+     * together:
+     *      ACC_PUBLIC
+     *      ACC_PRIVATE
+     *      ACC_PROTECTED
+     *      ACC_FINAL
+     *      ACC_ABSTRACT
+     * TODO: check that this is the appropriate set
+     * @param flags the set of class flags to set
+     */
+    public void setFlags(short flags) {
+        itsFlags = flags;
+    }
+
+    static String getSlashedForm(String name)
+    {
+        return name.replace('.', '/');
+    }
+
+    /**
+     * Convert Java class name in dot notation into
+     * "Lname-with-dots-replaced-by-slashes;" form suitable for use as
+     * JVM type signatures.
+     */
+    public static String classNameToSignature(String name)
+    {
+        int nameLength = name.length();
+        int colonPos = 1 + nameLength;
+        char[] buf = new char[colonPos + 1];
+        buf[0] = 'L';
+        buf[colonPos] = ';';
+        name.getChars(0, nameLength, buf, 1);
+        for (int i = 1; i != colonPos; ++i) {
+            if (buf[i] == '.') {
+                buf[i] = '/';
+            }
+        }
+        return new String(buf, 0, colonPos + 1);
+    }
+
+    /**
+     * Add a field to the class.
+     *
+     * @param fieldName the name of the field
+     * @param type the type of the field using ...
+     * @param flags the attributes of the field, such as ACC_PUBLIC, etc.
+     *        bitwise or'd together
+     */
+    public void addField(String fieldName, String type, short flags) {
+        short fieldNameIndex = itsConstantPool.addUtf8(fieldName);
+        short typeIndex = itsConstantPool.addUtf8(type);
+        itsFields.add(new ClassFileField(fieldNameIndex, typeIndex, flags));
+    }
+
+    /**
+     * Add a field to the class.
+     *
+     * @param fieldName the name of the field
+     * @param type the type of the field using ...
+     * @param flags the attributes of the field, such as ACC_PUBLIC, etc.
+     *        bitwise or'd together
+     * @param value an initial integral value
+     */
+    public void addField(String fieldName, String type, short flags,
+                         int value)
+    {
+        short fieldNameIndex = itsConstantPool.addUtf8(fieldName);
+        short typeIndex = itsConstantPool.addUtf8(type);
+        ClassFileField field = new ClassFileField(fieldNameIndex, typeIndex,
+                                                  flags);
+        field.setAttributes(itsConstantPool.addUtf8("ConstantValue"),
+                            (short)0,
+                            (short)0,
+                            itsConstantPool.addConstant(value));
+        itsFields.add(field);
+    }
+
+    /**
+     * Add a field to the class.
+     *
+     * @param fieldName the name of the field
+     * @param type the type of the field using ...
+     * @param flags the attributes of the field, such as ACC_PUBLIC, etc.
+     *        bitwise or'd together
+     * @param value an initial long value
+     */
+    public void addField(String fieldName, String type, short flags,
+                         long value)
+    {
+        short fieldNameIndex = itsConstantPool.addUtf8(fieldName);
+        short typeIndex = itsConstantPool.addUtf8(type);
+        ClassFileField field = new ClassFileField(fieldNameIndex, typeIndex,
+                                                  flags);
+        field.setAttributes(itsConstantPool.addUtf8("ConstantValue"),
+                            (short)0,
+                            (short)2,
+                            itsConstantPool.addConstant(value));
+        itsFields.add(field);
+    }
+
+    /**
+     * Add a field to the class.
+     *
+     * @param fieldName the name of the field
+     * @param type the type of the field using ...
+     * @param flags the attributes of the field, such as ACC_PUBLIC, etc.
+     *        bitwise or'd together
+     * @param value an initial double value
+     */
+    public void addField(String fieldName, String type, short flags,
+                         double value)
+    {
+        short fieldNameIndex = itsConstantPool.addUtf8(fieldName);
+        short typeIndex = itsConstantPool.addUtf8(type);
+        ClassFileField field = new ClassFileField(fieldNameIndex, typeIndex,
+                                                  flags);
+        field.setAttributes(itsConstantPool.addUtf8("ConstantValue"),
+                            (short)0,
+                            (short)2,
+                            itsConstantPool.addConstant(value));
+        itsFields.add(field);
+    }
+
+    /**
+     * Add Information about java variable to use when generating the local
+     * variable table.
+     *
+     * @param name variable name.
+     * @param type variable type as bytecode descriptor string.
+     * @param startPC the starting bytecode PC where this variable is live,
+     *                 or -1 if it does not have a Java register.
+     * @param register the Java register number of variable
+     *                 or -1 if it does not have a Java register.
+     */
+    public void addVariableDescriptor(String name, String type, int startPC, int register)
+    {
+        int nameIndex = itsConstantPool.addUtf8(name);
+        int descriptorIndex = itsConstantPool.addUtf8(type);
+        int [] chunk = { nameIndex, descriptorIndex, startPC, register };
+        if (itsVarDescriptors == null) {
+            itsVarDescriptors = new ObjArray();
+        }
+        itsVarDescriptors.add(chunk);
+    }
+
+    /**
+     * Add a method and begin adding code.
+     *
+     * This method must be called before other methods for adding code,
+     * exception tables, etc. can be invoked.
+     *
+     * @param methodName the name of the method
+     * @param type a string representing the type
+     * @param flags the attributes of the field, such as ACC_PUBLIC, etc.
+     *        bitwise or'd together
+     */
+    public void startMethod(String methodName, String type, short flags) {
+        short methodNameIndex = itsConstantPool.addUtf8(methodName);
+        short typeIndex = itsConstantPool.addUtf8(type);
+        itsCurrentMethod = new ClassFileMethod(methodNameIndex, typeIndex,
+                                               flags);
+        itsMethods.add(itsCurrentMethod);
+    }
+
+    /**
+     * Complete generation of the method.
+     *
+     * After this method is called, no more code can be added to the
+     * method begun with <code>startMethod</code>.
+     *
+     * @param maxLocals the maximum number of local variable slots
+     *        (a.k.a. Java registers) used by the method
+     */
+    public void stopMethod(short maxLocals) {
+        if (itsCurrentMethod == null)
+            throw new IllegalStateException("No method to stop");
+
+        fixLabelGotos();
+
+        itsMaxLocals = maxLocals;
+
+        int lineNumberTableLength = 0;
+        if (itsLineNumberTable != null) {
+            // 6 bytes for the attribute header
+            // 2 bytes for the line number count
+            // 4 bytes for each entry
+            lineNumberTableLength = 6 + 2 + (itsLineNumberTableTop * 4);
+        }
+
+        int variableTableLength = 0;
+        if (itsVarDescriptors != null) {
+            // 6 bytes for the attribute header
+            // 2 bytes for the variable count
+            // 10 bytes for each entry
+            variableTableLength = 6 + 2 + (itsVarDescriptors.size() * 10);
+        }
+
+        int attrLength = 2 +                    // attribute_name_index
+                         4 +                    // attribute_length
+                         2 +                    // max_stack
+                         2 +                    // max_locals
+                         4 +                    // code_length
+                         itsCodeBufferTop +
+                         2 +                    // exception_table_length
+                         (itsExceptionTableTop * 8) +
+                         2 +                    // attributes_count
+                         lineNumberTableLength +
+                         variableTableLength;
+
+        if (attrLength > 65536) {
+            // See http://java.sun.com/docs/books/jvms/second_edition/html/ClassFile.doc.html,
+            // section 4.10, "The amount of code per non-native, non-abstract 
+            // method is limited to 65536 bytes...
+            throw new ClassFileFormatException(
+                "generated bytecode for method exceeds 64K limit.");
+        }
+        byte[] codeAttribute = new byte[attrLength];
+        int index = 0;
+        int codeAttrIndex = itsConstantPool.addUtf8("Code");
+        index = putInt16(codeAttrIndex, codeAttribute, index);
+        attrLength -= 6;                 // discount the attribute header
+        index = putInt32(attrLength, codeAttribute, index);
+        index = putInt16(itsMaxStack, codeAttribute, index);
+        index = putInt16(itsMaxLocals, codeAttribute, index);
+        index = putInt32(itsCodeBufferTop, codeAttribute, index);
+        System.arraycopy(itsCodeBuffer, 0, codeAttribute, index,
+                         itsCodeBufferTop);
+        index += itsCodeBufferTop;
+
+        if (itsExceptionTableTop > 0) {
+            index = putInt16(itsExceptionTableTop, codeAttribute, index);
+            for (int i = 0; i < itsExceptionTableTop; i++) {
+                ExceptionTableEntry ete = itsExceptionTable[i];
+                short startPC = (short)getLabelPC(ete.itsStartLabel);
+                short endPC = (short)getLabelPC(ete.itsEndLabel);
+                short handlerPC = (short)getLabelPC(ete.itsHandlerLabel);
+                short catchType = ete.itsCatchType;
+                if (startPC == -1)
+                    throw new IllegalStateException("start label not defined");
+                if (endPC == -1)
+                    throw new IllegalStateException("end label not defined");
+                if (handlerPC == -1)
+                    throw new IllegalStateException(
+                        "handler label not defined");
+
+                index = putInt16(startPC, codeAttribute, index);
+                index = putInt16(endPC, codeAttribute, index);
+                index = putInt16(handlerPC, codeAttribute, index);
+                index = putInt16(catchType, codeAttribute, index);
+            }
+        }
+        else {
+            // write 0 as exception table length
+            index = putInt16(0, codeAttribute, index);
+        }
+
+        int attributeCount = 0;
+        if (itsLineNumberTable != null)
+            attributeCount++;
+        if (itsVarDescriptors != null)
+            attributeCount++;
+        index = putInt16(attributeCount, codeAttribute, index);
+
+        if (itsLineNumberTable != null) {
+            int lineNumberTableAttrIndex
+                    = itsConstantPool.addUtf8("LineNumberTable");
+            index = putInt16(lineNumberTableAttrIndex, codeAttribute, index);
+            int tableAttrLength = 2 + (itsLineNumberTableTop * 4);
+            index = putInt32(tableAttrLength, codeAttribute, index);
+            index = putInt16(itsLineNumberTableTop, codeAttribute, index);
+            for (int i = 0; i < itsLineNumberTableTop; i++) {
+                index = putInt32(itsLineNumberTable[i], codeAttribute, index);
+            }
+        }
+
+        if (itsVarDescriptors != null) {
+            int variableTableAttrIndex
+                    = itsConstantPool.addUtf8("LocalVariableTable");
+            index = putInt16(variableTableAttrIndex, codeAttribute, index);
+            int varCount = itsVarDescriptors.size();
+            int tableAttrLength = 2 + (varCount * 10);
+            index = putInt32(tableAttrLength, codeAttribute, index);
+            index = putInt16(varCount, codeAttribute, index);
+            for (int i = 0; i < varCount; i++) {
+                int[] chunk = (int[])itsVarDescriptors.get(i);
+                int nameIndex       = chunk[0];
+                int descriptorIndex = chunk[1];
+                int startPC         = chunk[2];
+                int register        = chunk[3];
+                int length = itsCodeBufferTop - startPC;
+
+                index = putInt16(startPC, codeAttribute, index);
+                index = putInt16(length, codeAttribute, index);
+                index = putInt16(nameIndex, codeAttribute, index);
+                index = putInt16(descriptorIndex, codeAttribute, index);
+                index = putInt16(register, codeAttribute, index);
+            }
+        }
+
+        itsCurrentMethod.setCodeAttribute(codeAttribute);
+
+        itsExceptionTable = null;
+        itsExceptionTableTop = 0;
+        itsLineNumberTableTop = 0;
+        itsCodeBufferTop = 0;
+        itsCurrentMethod = null;
+        itsMaxStack = 0;
+        itsStackTop = 0;
+        itsLabelTableTop = 0;
+        itsFixupTableTop = 0;
+        itsVarDescriptors = null;
+    }
+
+    /**
+     * Add the single-byte opcode to the current method.
+     *
+     * @param theOpCode the opcode of the bytecode
+     */
+    public void add(int theOpCode) {
+        if (opcodeCount(theOpCode) != 0)
+            throw new IllegalArgumentException("Unexpected operands");
+        int newStack = itsStackTop + stackChange(theOpCode);
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+        if (DEBUGCODE)
+            System.out.println("Add " + bytecodeStr(theOpCode));
+        addToCodeBuffer(theOpCode);
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+bytecodeStr(theOpCode)
+                               +" stack = "+itsStackTop);
+        }
+    }
+
+    /**
+     * Add a single-operand opcode to the current method.
+     *
+     * @param theOpCode the opcode of the bytecode
+     * @param theOperand the operand of the bytecode
+     */
+    public void add(int theOpCode, int theOperand) {
+        if (DEBUGCODE) {
+            System.out.println("Add "+bytecodeStr(theOpCode)
+                               +", "+Integer.toHexString(theOperand));
+        }
+        int newStack = itsStackTop + stackChange(theOpCode);
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+
+        switch (theOpCode) {
+            case ByteCode.GOTO :
+                // fallthru...
+            case ByteCode.IFEQ :
+            case ByteCode.IFNE :
+            case ByteCode.IFLT :
+            case ByteCode.IFGE :
+            case ByteCode.IFGT :
+            case ByteCode.IFLE :
+            case ByteCode.IF_ICMPEQ :
+            case ByteCode.IF_ICMPNE :
+            case ByteCode.IF_ICMPLT :
+            case ByteCode.IF_ICMPGE :
+            case ByteCode.IF_ICMPGT :
+            case ByteCode.IF_ICMPLE :
+            case ByteCode.IF_ACMPEQ :
+            case ByteCode.IF_ACMPNE :
+            case ByteCode.JSR :
+            case ByteCode.IFNULL :
+            case ByteCode.IFNONNULL : {
+                    if ((theOperand & 0x80000000) != 0x80000000) {
+                        if ((theOperand < 0) || (theOperand > 65535))
+                            throw new IllegalArgumentException(
+                                "Bad label for branch");
+                    }
+                    int branchPC = itsCodeBufferTop;
+                    addToCodeBuffer(theOpCode);
+                    if ((theOperand & 0x80000000) != 0x80000000) {
+                            // hard displacement
+                        addToCodeInt16(theOperand);
+                    }
+                    else {  // a label
+                        int targetPC = getLabelPC(theOperand);
+                        if (DEBUGLABELS) {
+                            int theLabel = theOperand & 0x7FFFFFFF;
+                            System.out.println("Fixing branch to " +
+                                               theLabel + " at " + targetPC +
+                                               " from " + branchPC);
+                        }
+                        if (targetPC != -1) {
+                            int offset = targetPC - branchPC;
+                            addToCodeInt16(offset);
+                        }
+                        else {
+                            addLabelFixup(theOperand, branchPC + 1);
+                            addToCodeInt16(0);
+                        }
+                    }
+                }
+                break;
+
+            case ByteCode.BIPUSH :
+                if ((byte)theOperand != theOperand)
+                    throw new IllegalArgumentException("out of range byte");
+                addToCodeBuffer(theOpCode);
+                addToCodeBuffer((byte)theOperand);
+                break;
+
+            case ByteCode.SIPUSH :
+                if ((short)theOperand != theOperand)
+                    throw new IllegalArgumentException("out of range short");
+                addToCodeBuffer(theOpCode);
+                   addToCodeInt16(theOperand);
+                break;
+
+            case ByteCode.NEWARRAY :
+                if (!(0 <= theOperand && theOperand < 256))
+                    throw new IllegalArgumentException("out of range index");
+                addToCodeBuffer(theOpCode);
+                addToCodeBuffer(theOperand);
+                break;
+
+            case ByteCode.GETFIELD :
+            case ByteCode.PUTFIELD :
+                if (!(0 <= theOperand && theOperand < 65536))
+                    throw new IllegalArgumentException("out of range field");
+                addToCodeBuffer(theOpCode);
+                addToCodeInt16(theOperand);
+                break;
+
+            case ByteCode.LDC :
+            case ByteCode.LDC_W :
+            case ByteCode.LDC2_W :
+                if (!(0 <= theOperand && theOperand < 65536))
+                    throw new IllegalArgumentException("out of range index");
+                if (theOperand >= 256
+                    || theOpCode == ByteCode.LDC_W
+                    || theOpCode == ByteCode.LDC2_W)
+                {
+                    if (theOpCode == ByteCode.LDC) {
+                        addToCodeBuffer(ByteCode.LDC_W);
+                    } else {
+                        addToCodeBuffer(theOpCode);
+                    }
+                    addToCodeInt16(theOperand);
+                } else {
+                    addToCodeBuffer(theOpCode);
+                    addToCodeBuffer(theOperand);
+                }
+                break;
+
+            case ByteCode.RET :
+            case ByteCode.ILOAD :
+            case ByteCode.LLOAD :
+            case ByteCode.FLOAD :
+            case ByteCode.DLOAD :
+            case ByteCode.ALOAD :
+            case ByteCode.ISTORE :
+            case ByteCode.LSTORE :
+            case ByteCode.FSTORE :
+            case ByteCode.DSTORE :
+            case ByteCode.ASTORE :
+                if (!(0 <= theOperand && theOperand < 65536))
+                    throw new ClassFileFormatException("out of range variable");
+                if (theOperand >= 256) {
+                    addToCodeBuffer(ByteCode.WIDE);
+                    addToCodeBuffer(theOpCode);
+                    addToCodeInt16(theOperand);
+                }
+                else {
+                    addToCodeBuffer(theOpCode);
+                    addToCodeBuffer(theOperand);
+                }
+                break;
+
+            default :
+                throw new IllegalArgumentException(
+                    "Unexpected opcode for 1 operand");
+        }
+
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+bytecodeStr(theOpCode)
+                               +" stack = "+itsStackTop);
+        }
+    }
+
+    /**
+     * Generate the load constant bytecode for the given integer.
+     *
+     * @param k the constant
+     */
+    public void addLoadConstant(int k) {
+        switch (k) {
+            case 0: add(ByteCode.ICONST_0); break;
+            case 1: add(ByteCode.ICONST_1); break;
+            case 2: add(ByteCode.ICONST_2); break;
+            case 3: add(ByteCode.ICONST_3); break;
+            case 4: add(ByteCode.ICONST_4); break;
+            case 5: add(ByteCode.ICONST_5); break;
+            default:
+                add(ByteCode.LDC, itsConstantPool.addConstant(k));
+                break;
+        }
+    }
+
+    /**
+     * Generate the load constant bytecode for the given long.
+     *
+     * @param k the constant
+     */
+    public void addLoadConstant(long k) {
+        add(ByteCode.LDC2_W, itsConstantPool.addConstant(k));
+    }
+
+    /**
+     * Generate the load constant bytecode for the given float.
+     *
+     * @param k the constant
+     */
+    public void addLoadConstant(float k) {
+        add(ByteCode.LDC, itsConstantPool.addConstant(k));
+    }
+
+    /**
+     * Generate the load constant bytecode for the given double.
+     *
+     * @param k the constant
+     */
+    public void addLoadConstant(double k) {
+        add(ByteCode.LDC2_W, itsConstantPool.addConstant(k));
+    }
+
+    /**
+     * Generate the load constant bytecode for the given string.
+     *
+     * @param k the constant
+     */
+    public void addLoadConstant(String k) {
+        add(ByteCode.LDC, itsConstantPool.addConstant(k));
+    }
+
+    /**
+     * Add the given two-operand bytecode to the current method.
+     *
+     * @param theOpCode the opcode of the bytecode
+     * @param theOperand1 the first operand of the bytecode
+     * @param theOperand2 the second operand of the bytecode
+     */
+    public void add(int theOpCode, int theOperand1, int theOperand2) {
+        if (DEBUGCODE) {
+            System.out.println("Add "+bytecodeStr(theOpCode)
+                               +", "+Integer.toHexString(theOperand1)
+                               +", "+Integer.toHexString(theOperand2));
+        }
+        int newStack = itsStackTop + stackChange(theOpCode);
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+
+        if (theOpCode == ByteCode.IINC) {
+            if (!(0 <= theOperand1 && theOperand1 < 65536))
+                throw new ClassFileFormatException("out of range variable");
+            if (!(0 <= theOperand2 && theOperand2 < 65536))
+                throw new ClassFileFormatException("out of range increment");
+
+            if (theOperand1 > 255 || theOperand2 < -128 || theOperand2 > 127) {
+                addToCodeBuffer(ByteCode.WIDE);
+                addToCodeBuffer(ByteCode.IINC);
+                addToCodeInt16(theOperand1);
+                addToCodeInt16(theOperand2);
+            }
+            else {
+                addToCodeBuffer(ByteCode.WIDE);
+                addToCodeBuffer(ByteCode.IINC);
+                addToCodeBuffer(theOperand1);
+                addToCodeBuffer(theOperand2);
+            }
+        }
+        else if (theOpCode == ByteCode.MULTIANEWARRAY) {
+            if (!(0 <= theOperand1 && theOperand1 < 65536))
+                throw new IllegalArgumentException("out of range index");
+            if (!(0 <= theOperand2 && theOperand2 < 256))
+                throw new IllegalArgumentException("out of range dimensions");
+
+            addToCodeBuffer(ByteCode.MULTIANEWARRAY);
+            addToCodeInt16(theOperand1);
+            addToCodeBuffer(theOperand2);
+        }
+        else {
+            throw new IllegalArgumentException(
+                "Unexpected opcode for 2 operands");
+        }
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+bytecodeStr(theOpCode)
+                               +" stack = "+itsStackTop);
+        }
+
+    }
+
+    public void add(int theOpCode, String className) {
+        if (DEBUGCODE) {
+            System.out.println("Add "+bytecodeStr(theOpCode)
+                               +", "+className);
+        }
+        int newStack = itsStackTop + stackChange(theOpCode);
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+        switch (theOpCode) {
+            case ByteCode.NEW :
+            case ByteCode.ANEWARRAY :
+            case ByteCode.CHECKCAST :
+            case ByteCode.INSTANCEOF : {
+                short classIndex = itsConstantPool.addClass(className);
+                addToCodeBuffer(theOpCode);
+                addToCodeInt16(classIndex);
+            }
+            break;
+
+            default :
+                throw new IllegalArgumentException(
+                    "bad opcode for class reference");
+        }
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+bytecodeStr(theOpCode)
+                               +" stack = "+itsStackTop);
+        }
+    }
+
+
+    public void add(int theOpCode, String className, String fieldName,
+                    String fieldType)
+    {
+        if (DEBUGCODE) {
+            System.out.println("Add "+bytecodeStr(theOpCode)
+                               +", "+className+", "+fieldName+", "+fieldType);
+        }
+        int newStack = itsStackTop + stackChange(theOpCode);
+        char fieldTypeChar = fieldType.charAt(0);
+        int fieldSize = (fieldTypeChar == 'J' || fieldTypeChar == 'D')
+                        ? 2 : 1;
+        switch (theOpCode) {
+            case ByteCode.GETFIELD :
+            case ByteCode.GETSTATIC :
+                newStack += fieldSize;
+                break;
+            case ByteCode.PUTSTATIC :
+            case ByteCode.PUTFIELD :
+                newStack -= fieldSize;
+                break;
+            default :
+                throw new IllegalArgumentException(
+                    "bad opcode for field reference");
+        }
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+        short fieldRefIndex = itsConstantPool.addFieldRef(className,
+                                             fieldName, fieldType);
+        addToCodeBuffer(theOpCode);
+        addToCodeInt16(fieldRefIndex);
+
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+bytecodeStr(theOpCode)
+                               +" stack = "+itsStackTop);
+        }
+    }
+
+    public void addInvoke(int theOpCode, String className, String methodName,
+                          String methodType)
+    {
+        if (DEBUGCODE) {
+            System.out.println("Add "+bytecodeStr(theOpCode)
+                               +", "+className+", "+methodName+", "
+                               +methodType);
+        }
+        int parameterInfo = sizeOfParameters(methodType);
+        int parameterCount = parameterInfo >>> 16;
+        int stackDiff = (short)parameterInfo;
+
+        int newStack = itsStackTop + stackDiff;
+        newStack += stackChange(theOpCode);     // adjusts for 'this'
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+
+        switch (theOpCode) {
+            case ByteCode.INVOKEVIRTUAL :
+            case ByteCode.INVOKESPECIAL :
+            case ByteCode.INVOKESTATIC :
+            case ByteCode.INVOKEINTERFACE : {
+                    addToCodeBuffer(theOpCode);
+                    if (theOpCode == ByteCode.INVOKEINTERFACE) {
+                        short ifMethodRefIndex
+                                    = itsConstantPool.addInterfaceMethodRef(
+                                               className, methodName,
+                                               methodType);
+                        addToCodeInt16(ifMethodRefIndex);
+                        addToCodeBuffer(parameterCount + 1);
+                        addToCodeBuffer(0);
+                    }
+                    else {
+                        short methodRefIndex = itsConstantPool.addMethodRef(
+                                               className, methodName,
+                                               methodType);
+                        addToCodeInt16(methodRefIndex);
+                    }
+                }
+                break;
+
+            default :
+                throw new IllegalArgumentException(
+                    "bad opcode for method reference");
+        }
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+bytecodeStr(theOpCode)
+                               +" stack = "+itsStackTop);
+        }
+    }
+
+    /**
+     * Generate code to load the given integer on stack.
+     *
+     * @param k the constant
+     */
+    public void addPush(int k)
+    {
+        if ((byte)k == k) {
+            if (k == -1) {
+                add(ByteCode.ICONST_M1);
+            } else if (0 <= k && k <= 5) {
+                add((byte)(ByteCode.ICONST_0 + k));
+            } else {
+                add(ByteCode.BIPUSH, (byte)k);
+            }
+        } else if ((short)k == k) {
+            add(ByteCode.SIPUSH, (short)k);
+        } else {
+            addLoadConstant(k);
+        }
+    }
+
+    public void addPush(boolean k)
+    {
+        add(k ? ByteCode.ICONST_1 : ByteCode.ICONST_0);
+    }
+
+    /**
+     * Generate code to load the given long on stack.
+     *
+     * @param k the constant
+     */
+    public void addPush(long k)
+    {
+        int ik = (int)k;
+        if (ik == k) {
+            addPush(ik);
+            add(ByteCode.I2L);
+        } else {
+            addLoadConstant(k);
+        }
+    }
+
+    /**
+     * Generate code to load the given double on stack.
+     *
+     * @param k the constant
+     */
+    public void addPush(double k)
+    {
+        if (k == 0.0) {
+            // zero
+            add(ByteCode.DCONST_0);
+            if (1.0 / k < 0) {
+                // Negative zero
+                add(ByteCode.DNEG);
+            }
+        } else if (k == 1.0 || k == -1.0) {
+            add(ByteCode.DCONST_1);
+            if (k < 0) {
+                add(ByteCode.DNEG);
+            }
+        } else {
+            addLoadConstant(k);
+        }
+    }
+
+    /**
+     * Generate the code to leave on stack the given string even if the
+     * string encoding exeeds the class file limit for single string constant
+     *
+     * @param k the constant
+     */
+    public void addPush(String k) {
+        int length = k.length();
+        int limit = itsConstantPool.getUtfEncodingLimit(k, 0, length);
+        if (limit == length) {
+            addLoadConstant(k);
+            return;
+        }
+        // Split string into picies fitting the UTF limit and generate code for
+        // StringBuffer sb = new StringBuffer(length);
+        // sb.append(loadConstant(piece_1));
+        // ...
+        // sb.append(loadConstant(piece_N));
+        // sb.toString();
+        final String SB = "java/lang/StringBuffer";
+        add(ByteCode.NEW, SB);
+        add(ByteCode.DUP);
+        addPush(length);
+        addInvoke(ByteCode.INVOKESPECIAL, SB, "<init>", "(I)V");
+        int cursor = 0;
+        for (;;) {
+            add(ByteCode.DUP);
+            String s = k.substring(cursor, limit);
+            addLoadConstant(s);
+            addInvoke(ByteCode.INVOKEVIRTUAL, SB, "append",
+                      "(Ljava/lang/String;)Ljava/lang/StringBuffer;");
+            add(ByteCode.POP);
+            if (limit == length) {
+                break;
+            }
+            cursor = limit;
+            limit = itsConstantPool.getUtfEncodingLimit(k, limit, length);
+        }
+        addInvoke(ByteCode.INVOKEVIRTUAL, SB, "toString",
+                  "()Ljava/lang/String;");
+    }
+
+    /**
+     * Check if k fits limit on string constant size imposed by class file
+     * format.
+     *
+     * @param k the string constant
+     */
+    public boolean isUnderStringSizeLimit(String k)
+    {
+        return itsConstantPool.isUnderUtfEncodingLimit(k);
+    }
+
+    /**
+     * Store integer from stack top into the given local.
+     *
+     * @param local number of local register
+     */
+    public void addIStore(int local)
+    {
+        xop(ByteCode.ISTORE_0, ByteCode.ISTORE, local);
+    }
+
+    /**
+     * Store long from stack top into the given local.
+     *
+     * @param local number of local register
+     */
+    public void addLStore(int local)
+    {
+        xop(ByteCode.LSTORE_0, ByteCode.LSTORE, local);
+    }
+
+    /**
+     * Store float from stack top into the given local.
+     *
+     * @param local number of local register
+     */
+    public void addFStore(int local)
+    {
+        xop(ByteCode.FSTORE_0, ByteCode.FSTORE, local);
+    }
+
+    /**
+     * Store double from stack top into the given local.
+     *
+     * @param local number of local register
+     */
+    public void addDStore(int local)
+    {
+        xop(ByteCode.DSTORE_0, ByteCode.DSTORE, local);
+    }
+
+    /**
+     * Store object from stack top into the given local.
+     *
+     * @param local number of local register
+     */
+    public void addAStore(int local)
+    {
+        xop(ByteCode.ASTORE_0, ByteCode.ASTORE, local);
+    }
+
+    /**
+     * Load integer from the given local into stack.
+     *
+     * @param local number of local register
+     */
+    public void addILoad(int local)
+    {
+        xop(ByteCode.ILOAD_0, ByteCode.ILOAD, local);
+    }
+
+    /**
+     * Load long from the given local into stack.
+     *
+     * @param local number of local register
+     */
+    public void addLLoad(int local)
+    {
+        xop(ByteCode.LLOAD_0, ByteCode.LLOAD, local);
+    }
+
+    /**
+     * Load float from the given local into stack.
+     *
+     * @param local number of local register
+     */
+    public void addFLoad(int local)
+    {
+        xop(ByteCode.FLOAD_0, ByteCode.FLOAD, local);
+    }
+
+    /**
+     * Load double from the given local into stack.
+     *
+     * @param local number of local register
+     */
+    public void addDLoad(int local)
+    {
+        xop(ByteCode.DLOAD_0, ByteCode.DLOAD, local);
+    }
+
+    /**
+     * Load object from the given local into stack.
+     *
+     * @param local number of local register
+     */
+    public void addALoad(int local)
+    {
+        xop(ByteCode.ALOAD_0, ByteCode.ALOAD, local);
+    }
+
+    /**
+     * Load "this" into stack.
+     */
+    public void addLoadThis()
+    {
+        add(ByteCode.ALOAD_0);
+    }
+
+    private void xop(int shortOp, int op, int local)
+    {
+        switch (local) {
+          case 0:
+            add(shortOp);
+            break;
+          case 1:
+            add(shortOp + 1);
+            break;
+          case 2:
+            add(shortOp + 2);
+            break;
+          case 3:
+            add(shortOp + 3);
+            break;
+          default:
+            add(op, local);
+        }
+    }
+
+    public int addTableSwitch(int low, int high)
+    {
+        if (DEBUGCODE) {
+            System.out.println("Add "+bytecodeStr(ByteCode.TABLESWITCH)
+                               +" "+low+" "+high);
+        }
+        if (low > high)
+            throw new ClassFileFormatException("Bad bounds: "+low+' '+ high);
+
+        int newStack = itsStackTop + stackChange(ByteCode.TABLESWITCH);
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+
+        int entryCount = high - low + 1;
+        int padSize = 3 & ~itsCodeBufferTop; // == 3 - itsCodeBufferTop % 4
+
+        int N = addReservedCodeSpace(1 + padSize + 4 * (1 + 2 + entryCount));
+        int switchStart = N;
+        itsCodeBuffer[N++] = (byte)ByteCode.TABLESWITCH;
+        while (padSize != 0) {
+            itsCodeBuffer[N++] = 0;
+            --padSize;
+        }
+        N += 4; // skip default offset
+        N = putInt32(low, itsCodeBuffer, N);
+        putInt32(high, itsCodeBuffer, N);
+
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+bytecodeStr(ByteCode.TABLESWITCH)
+                               +" stack = "+itsStackTop);
+        }
+
+        return switchStart;
+    }
+
+    public final void markTableSwitchDefault(int switchStart)
+    {
+        setTableSwitchJump(switchStart, -1, itsCodeBufferTop);
+    }
+
+    public final void markTableSwitchCase(int switchStart, int caseIndex)
+    {
+        setTableSwitchJump(switchStart, caseIndex, itsCodeBufferTop);
+    }
+
+    public final void markTableSwitchCase(int switchStart, int caseIndex,
+                                          int stackTop)
+    {
+        if (!(0 <= stackTop && stackTop <= itsMaxStack))
+            throw new IllegalArgumentException("Bad stack index: "+stackTop);
+        itsStackTop = (short)stackTop;
+        setTableSwitchJump(switchStart, caseIndex, itsCodeBufferTop);
+    }
+
+    public void setTableSwitchJump(int switchStart, int caseIndex,
+                                   int jumpTarget)
+    {
+        if (!(0 <= jumpTarget && jumpTarget <= itsCodeBufferTop))
+            throw new IllegalArgumentException("Bad jump target: "+jumpTarget);
+        if (!(caseIndex >= -1))
+            throw new IllegalArgumentException("Bad case index: "+caseIndex);
+
+        int padSize = 3 & ~switchStart; // == 3 - switchStart % 4
+        int caseOffset;
+        if (caseIndex < 0) {
+            // default label
+            caseOffset = switchStart + 1 + padSize;
+        } else {
+            caseOffset = switchStart + 1 + padSize + 4 * (3 + caseIndex);
+        }
+        if (!(0 <= switchStart
+              && switchStart <= itsCodeBufferTop - 4 * 4 - padSize - 1))
+        {
+            throw new IllegalArgumentException(
+                switchStart+" is outside a possible range of tableswitch"
+                +" in already generated code");
+        }
+        if ((0xFF & itsCodeBuffer[switchStart]) != ByteCode.TABLESWITCH) {
+            throw new IllegalArgumentException(
+                switchStart+" is not offset of tableswitch statement");
+        }
+        if (!(0 <= caseOffset && caseOffset + 4 <= itsCodeBufferTop)) {
+            // caseIndex >= -1 does not guarantee that caseOffset >= 0 due
+            // to a possible overflow.
+            throw new ClassFileFormatException(
+                "Too big case index: "+caseIndex);
+        }
+        // ALERT: perhaps check against case bounds?
+        putInt32(jumpTarget - switchStart, itsCodeBuffer, caseOffset);
+    }
+
+    public int acquireLabel()
+    {
+        int top = itsLabelTableTop;
+        if (itsLabelTable == null || top == itsLabelTable.length) {
+            if (itsLabelTable == null) {
+                itsLabelTable = new int[MIN_LABEL_TABLE_SIZE];
+            }else {
+                int[] tmp = new int[itsLabelTable.length * 2];
+                System.arraycopy(itsLabelTable, 0, tmp, 0, top);
+                itsLabelTable = tmp;
+            }
+        }
+        itsLabelTableTop = top + 1;
+        itsLabelTable[top] = -1;
+        return top | 0x80000000;
+    }
+
+    public void markLabel(int label)
+    {
+        if (!(label < 0))
+            throw new IllegalArgumentException("Bad label, no biscuit");
+
+        label &= 0x7FFFFFFF;
+        if (label > itsLabelTableTop)
+            throw new IllegalArgumentException("Bad label");
+
+        if (itsLabelTable[label] != -1) {
+            throw new IllegalStateException("Can only mark label once");
+        }
+
+        itsLabelTable[label] = itsCodeBufferTop;
+    }
+
+    public void markLabel(int label, short stackTop)
+    {
+        markLabel(label);
+        itsStackTop = stackTop;
+    }
+
+    public void markHandler(int theLabel) {
+        itsStackTop = 1;
+        markLabel(theLabel);
+    }
+
+    private int getLabelPC(int label)
+    {
+        if (!(label < 0))
+            throw new IllegalArgumentException("Bad label, no biscuit");
+        label &= 0x7FFFFFFF;
+        if (!(label < itsLabelTableTop))
+            throw new IllegalArgumentException("Bad label");
+        return itsLabelTable[label];
+    }
+
+    private void addLabelFixup(int label, int fixupSite)
+    {
+        if (!(label < 0))
+            throw new IllegalArgumentException("Bad label, no biscuit");
+        label &= 0x7FFFFFFF;
+        if (!(label < itsLabelTableTop))
+            throw new IllegalArgumentException("Bad label");
+        int top = itsFixupTableTop;
+        if (itsFixupTable == null || top == itsFixupTable.length) {
+            if (itsFixupTable == null) {
+                itsFixupTable = new long[MIN_FIXUP_TABLE_SIZE];
+            }else {
+                long[] tmp = new long[itsFixupTable.length * 2];
+                System.arraycopy(itsFixupTable, 0, tmp, 0, top);
+                itsFixupTable = tmp;
+            }
+        }
+        itsFixupTableTop = top + 1;
+        itsFixupTable[top] = ((long)label << 32) | fixupSite;
+    }
+
+    private  void fixLabelGotos()
+    {
+        byte[] codeBuffer = itsCodeBuffer;
+        for (int i = 0; i < itsFixupTableTop; i++) {
+            long fixup = itsFixupTable[i];
+            int label = (int)(fixup >> 32);
+            int fixupSite = (int)fixup;
+            int pc = itsLabelTable[label];
+            if (pc == -1) {
+                // Unlocated label
+                throw new RuntimeException();
+            }
+            // -1 to get delta from instruction start
+            int offset = pc - (fixupSite - 1);
+            if ((short)offset != offset) {
+                throw new ClassFileFormatException
+                    ("Program too complex: too big jump offset");
+            }
+            codeBuffer[fixupSite] = (byte)(offset >> 8);
+            codeBuffer[fixupSite + 1] = (byte)offset;
+        }
+        itsFixupTableTop = 0;
+    }
+
+    /**
+     * Get the current offset into the code of the current method.
+     *
+     * @return an integer representing the offset
+     */
+    public int getCurrentCodeOffset() {
+        return itsCodeBufferTop;
+    }
+
+    public short getStackTop() {
+        return itsStackTop;
+    }
+
+    public void setStackTop(short n) {
+        itsStackTop = n;
+    }
+
+    public void adjustStackTop(int delta) {
+        int newStack = itsStackTop + delta;
+        if (newStack < 0 || Short.MAX_VALUE < newStack) badStack(newStack);
+        itsStackTop = (short)newStack;
+        if (newStack > itsMaxStack) itsMaxStack = (short)newStack;
+        if (DEBUGSTACK) {
+            System.out.println("After "+"adjustStackTop("+delta+")"
+                               +" stack = "+itsStackTop);
+        }
+    }
+
+    private void addToCodeBuffer(int b)
+    {
+        int N = addReservedCodeSpace(1);
+        itsCodeBuffer[N] = (byte)b;
+    }
+
+    private void addToCodeInt16(int value)
+    {
+        int N = addReservedCodeSpace(2);
+        putInt16(value, itsCodeBuffer, N);
+    }
+
+    private int addReservedCodeSpace(int size)
+    {
+        if (itsCurrentMethod == null)
+            throw new IllegalArgumentException("No method to add to");
+        int oldTop = itsCodeBufferTop;
+        int newTop = oldTop + size;
+        if (newTop > itsCodeBuffer.length) {
+            int newSize = itsCodeBuffer.length * 2;
+            if (newTop > newSize) { newSize = newTop; }
+            byte[] tmp = new byte[newSize];
+            System.arraycopy(itsCodeBuffer, 0, tmp, 0, oldTop);
+            itsCodeBuffer = tmp;
+        }
+        itsCodeBufferTop = newTop;
+        return oldTop;
+    }
+
+    public void addExceptionHandler(int startLabel, int endLabel,
+                                    int handlerLabel, String catchClassName)
+    {
+        if ((startLabel & 0x80000000) != 0x80000000)
+            throw new IllegalArgumentException("Bad startLabel");
+        if ((endLabel & 0x80000000) != 0x80000000)
+            throw new IllegalArgumentException("Bad endLabel");
+        if ((handlerLabel & 0x80000000) != 0x80000000)
+            throw new IllegalArgumentException("Bad handlerLabel");
+
+        /*
+         * If catchClassName is null, use 0 for the catch_type_index; which
+         * means catch everything.  (Even when the verifier has let you throw
+         * something other than a Throwable.)
+         */
+        short catch_type_index = (catchClassName == null)
+                                 ? 0
+                                 : itsConstantPool.addClass(catchClassName);
+        ExceptionTableEntry newEntry = new ExceptionTableEntry(
+                                           startLabel,
+                                           endLabel,
+                                           handlerLabel,
+                                           catch_type_index);
+        int N = itsExceptionTableTop;
+        if (N == 0) {
+            itsExceptionTable = new ExceptionTableEntry[ExceptionTableSize];
+        } else if (N == itsExceptionTable.length) {
+            ExceptionTableEntry[] tmp = new ExceptionTableEntry[N * 2];
+            System.arraycopy(itsExceptionTable, 0, tmp, 0, N);
+            itsExceptionTable = tmp;
+        }
+        itsExceptionTable[N] = newEntry;
+        itsExceptionTableTop = N + 1;
+
+    }
+
+    public void addLineNumberEntry(short lineNumber) {
+        if (itsCurrentMethod == null)
+            throw new IllegalArgumentException("No method to stop");
+        int N = itsLineNumberTableTop;
+        if (N == 0) {
+            itsLineNumberTable = new int[LineNumberTableSize];
+        } else if (N == itsLineNumberTable.length) {
+            int[] tmp = new int[N * 2];
+            System.arraycopy(itsLineNumberTable, 0, tmp, 0, N);
+            itsLineNumberTable = tmp;
+        }
+        itsLineNumberTable[N] = (itsCodeBufferTop << 16) + lineNumber;
+        itsLineNumberTableTop = N + 1;
+    }
+
+    /**
+     * Write the class file to the OutputStream.
+     *
+     * @param oStream the stream to write to
+     * @throws IOException if writing to the stream produces an exception
+     */
+    public void write(OutputStream oStream)
+        throws IOException
+    {
+        byte[] array = toByteArray();
+        oStream.write(array);
+    }
+
+    private int getWriteSize()
+    {
+        int size = 0;
+
+        if (itsSourceFileNameIndex != 0) {
+            itsConstantPool.addUtf8("SourceFile");
+        }
+
+        size += 8; //writeLong(FileHeaderConstant);
+        size += itsConstantPool.getWriteSize();
+        size += 2; //writeShort(itsFlags);
+        size += 2; //writeShort(itsThisClassIndex);
+        size += 2; //writeShort(itsSuperClassIndex);
+        size += 2; //writeShort(itsInterfaces.size());
+        size += 2 * itsInterfaces.size();
+
+        size += 2; //writeShort(itsFields.size());
+        for (int i = 0; i < itsFields.size(); i++) {
+            size += ((ClassFileField)(itsFields.get(i))).getWriteSize();
+        }
+
+        size += 2; //writeShort(itsMethods.size());
+        for (int i = 0; i < itsMethods.size(); i++) {
+            size += ((ClassFileMethod)(itsMethods.get(i))).getWriteSize();
+        }
+
+        if (itsSourceFileNameIndex != 0) {
+            size += 2; //writeShort(1);  attributes count
+            size += 2; //writeShort(sourceFileAttributeNameIndex);
+            size += 4; //writeInt(2);
+            size += 2; //writeShort(itsSourceFileNameIndex);
+        }else {
+            size += 2; //out.writeShort(0);  no attributes
+        }
+
+        return size;
+    }
+
+    /**
+     * Get the class file as array of bytesto the OutputStream.
+     */
+    public byte[] toByteArray()
+    {
+        int dataSize = getWriteSize();
+        byte[] data = new byte[dataSize];
+        int offset = 0;
+
+        short sourceFileAttributeNameIndex = 0;
+        if (itsSourceFileNameIndex != 0) {
+            sourceFileAttributeNameIndex = itsConstantPool.addUtf8(
+                                               "SourceFile");
+        }
+
+        offset = putInt64(FileHeaderConstant, data, offset);
+        offset = itsConstantPool.write(data, offset);
+        offset = putInt16(itsFlags, data, offset);
+        offset = putInt16(itsThisClassIndex, data, offset);
+        offset = putInt16(itsSuperClassIndex, data, offset);
+        offset = putInt16(itsInterfaces.size(), data, offset);
+        for (int i = 0; i < itsInterfaces.size(); i++) {
+            int interfaceIndex = ((Short)(itsInterfaces.get(i))).shortValue();
+            offset = putInt16(interfaceIndex, data, offset);
+        }
+        offset = putInt16(itsFields.size(), data, offset);
+        for (int i = 0; i < itsFields.size(); i++) {
+            ClassFileField field = (ClassFileField)itsFields.get(i);
+            offset = field.write(data, offset);
+        }
+        offset = putInt16(itsMethods.size(), data, offset);
+        for (int i = 0; i < itsMethods.size(); i++) {
+            ClassFileMethod method = (ClassFileMethod)itsMethods.get(i);
+            offset = method.write(data, offset);
+        }
+        if (itsSourceFileNameIndex != 0) {
+            offset = putInt16(1, data, offset); // attributes count
+            offset = putInt16(sourceFileAttributeNameIndex, data, offset);
+            offset = putInt32(2, data, offset);
+            offset = putInt16(itsSourceFileNameIndex, data, offset);
+        } else {
+            offset = putInt16(0, data, offset); // no attributes
+        }
+
+        if (offset != dataSize) {
+            // Check getWriteSize is consistent with write!
+            throw new RuntimeException();
+        }
+
+        return data;
+    }
+
+    static int putInt64(long value, byte[] array, int offset)
+    {
+        offset = putInt32((int)(value >>> 32), array, offset);
+        return putInt32((int)value, array, offset);
+    }
+
+    private static void badStack(int value)
+    {
+        String s;
+        if (value < 0) { s = "Stack underflow: "+value; }
+        else { s = "Too big stack: "+value; }
+        throw new IllegalStateException(s);
+    }
+
+    /*
+        Really weird. Returns an int with # parameters in hi 16 bits, and
+        stack difference removal of parameters from stack and pushing the
+        result (it does not take into account removal of this in case of
+        non-static methods).
+        If Java really supported references we wouldn't have to be this
+        perverted.
+    */
+    private static int sizeOfParameters(String pString)
+    {
+        int length = pString.length();
+        int rightParenthesis = pString.lastIndexOf(')');
+        if (3 <= length /* minimal signature takes at least 3 chars: ()V */
+            && pString.charAt(0) == '('
+            && 1 <= rightParenthesis && rightParenthesis + 1 < length)
+        {
+            boolean ok = true;
+            int index = 1;
+            int stackDiff = 0;
+            int count = 0;
+        stringLoop:
+            while (index != rightParenthesis) {
+                switch (pString.charAt(index)) {
+                    default:
+                        ok = false;
+                        break stringLoop;
+                    case 'J' :
+                    case 'D' :
+                        --stackDiff;
+                        // fall thru
+                    case 'B' :
+                    case 'S' :
+                    case 'C' :
+                    case 'I' :
+                    case 'Z' :
+                    case 'F' :
+                        --stackDiff;
+                        ++count;
+                        ++index;
+                        continue;
+                    case '[' :
+                        ++index;
+                        int c = pString.charAt(index);
+                        while (c == '[') {
+                            ++index;
+                            c = pString.charAt(index);
+                        }
+                        switch (c) {
+                            default:
+                                ok = false;
+                                break stringLoop;
+                            case 'J' :
+                            case 'D' :
+                            case 'B' :
+                            case 'S' :
+                            case 'C' :
+                            case 'I' :
+                            case 'Z' :
+                            case 'F' :
+                                --stackDiff;
+                                ++count;
+                                ++index;
+                                continue;
+                            case 'L':
+                                // fall thru
+                        }
+                          // fall thru
+                    case 'L' : {
+                        --stackDiff;
+                        ++count;
+                        ++index;
+                        int semicolon = pString.indexOf(';',  index);
+                        if (!(index + 1 <= semicolon
+                            && semicolon < rightParenthesis))
+                        {
+                            ok = false;
+                            break stringLoop;
+                        }
+                        index = semicolon + 1;
+                        continue;
+                    }
+                }
+            }
+            if (ok) {
+                switch (pString.charAt(rightParenthesis + 1)) {
+                    default:
+                        ok = false;
+                        break;
+                    case 'J' :
+                    case 'D' :
+                        ++stackDiff;
+                        // fall thru
+                    case 'B' :
+                    case 'S' :
+                    case 'C' :
+                    case 'I' :
+                    case 'Z' :
+                    case 'F' :
+                    case 'L' :
+                    case '[' :
+                        ++stackDiff;
+                        // fall thru
+                    case 'V' :
+                        break;
+                }
+                if (ok) {
+                    return ((count << 16) | (0xFFFF & stackDiff));
+                }
+            }
+        }
+        throw new IllegalArgumentException(
+            "Bad parameter signature: "+pString);
+    }
+
+    static int putInt16(int value, byte[] array, int offset)
+    {
+        array[offset + 0] = (byte)(value >>> 8);
+        array[offset + 1] = (byte)value;
+        return offset + 2;
+    }
+
+    static int putInt32(int value, byte[] array, int offset)
+    {
+        array[offset + 0] = (byte)(value >>> 24);
+        array[offset + 1] = (byte)(value >>> 16);
+        array[offset + 2] = (byte)(value >>> 8);
+        array[offset + 3] = (byte)value;
+        return offset + 4;
+    }
+
+    /**
+     * Number of operands accompanying the opcode.
+     */
+    static int opcodeCount(int opcode)
+    {
+        switch (opcode) {
+            case ByteCode.AALOAD:
+            case ByteCode.AASTORE:
+            case ByteCode.ACONST_NULL:
+            case ByteCode.ALOAD_0:
+            case ByteCode.ALOAD_1:
+            case ByteCode.ALOAD_2:
+            case ByteCode.ALOAD_3:
+            case ByteCode.ARETURN:
+            case ByteCode.ARRAYLENGTH:
+            case ByteCode.ASTORE_0:
+            case ByteCode.ASTORE_1:
+            case ByteCode.ASTORE_2:
+            case ByteCode.ASTORE_3:
+            case ByteCode.ATHROW:
+            case ByteCode.BALOAD:
+            case ByteCode.BASTORE:
+            case ByteCode.BREAKPOINT:
+            case ByteCode.CALOAD:
+            case ByteCode.CASTORE:
+            case ByteCode.D2F:
+            case ByteCode.D2I:
+            case ByteCode.D2L:
+            case ByteCode.DADD:
+            case ByteCode.DALOAD:
+            case ByteCode.DASTORE:
+            case ByteCode.DCMPG:
+            case ByteCode.DCMPL:
+            case ByteCode.DCONST_0:
+            case ByteCode.DCONST_1:
+            case ByteCode.DDIV:
+            case ByteCode.DLOAD_0:
+            case ByteCode.DLOAD_1:
+            case ByteCode.DLOAD_2:
+            case ByteCode.DLOAD_3:
+            case ByteCode.DMUL:
+            case ByteCode.DNEG:
+            case ByteCode.DREM:
+            case ByteCode.DRETURN:
+            case ByteCode.DSTORE_0:
+            case ByteCode.DSTORE_1:
+            case ByteCode.DSTORE_2:
+            case ByteCode.DSTORE_3:
+            case ByteCode.DSUB:
+            case ByteCode.DUP:
+            case ByteCode.DUP2:
+            case ByteCode.DUP2_X1:
+            case ByteCode.DUP2_X2:
+            case ByteCode.DUP_X1:
+            case ByteCode.DUP_X2:
+            case ByteCode.F2D:
+            case ByteCode.F2I:
+            case ByteCode.F2L:
+            case ByteCode.FADD:
+            case ByteCode.FALOAD:
+            case ByteCode.FASTORE:
+            case ByteCode.FCMPG:
+            case ByteCode.FCMPL:
+            case ByteCode.FCONST_0:
+            case ByteCode.FCONST_1:
+            case ByteCode.FCONST_2:
+            case ByteCode.FDIV:
+            case ByteCode.FLOAD_0:
+            case ByteCode.FLOAD_1:
+            case ByteCode.FLOAD_2:
+            case ByteCode.FLOAD_3:
+            case ByteCode.FMUL:
+            case ByteCode.FNEG:
+            case ByteCode.FREM:
+            case ByteCode.FRETURN:
+            case ByteCode.FSTORE_0:
+            case ByteCode.FSTORE_1:
+            case ByteCode.FSTORE_2:
+            case ByteCode.FSTORE_3:
+            case ByteCode.FSUB:
+            case ByteCode.I2B:
+            case ByteCode.I2C:
+            case ByteCode.I2D:
+            case ByteCode.I2F:
+            case ByteCode.I2L:
+            case ByteCode.I2S:
+            case ByteCode.IADD:
+            case ByteCode.IALOAD:
+            case ByteCode.IAND:
+            case ByteCode.IASTORE:
+            case ByteCode.ICONST_0:
+            case ByteCode.ICONST_1:
+            case ByteCode.ICONST_2:
+            case ByteCode.ICONST_3:
+            case ByteCode.ICONST_4:
+            case ByteCode.ICONST_5:
+            case ByteCode.ICONST_M1:
+            case ByteCode.IDIV:
+            case ByteCode.ILOAD_0:
+            case ByteCode.ILOAD_1:
+            case ByteCode.ILOAD_2:
+            case ByteCode.ILOAD_3:
+            case ByteCode.IMPDEP1:
+            case ByteCode.IMPDEP2:
+            case ByteCode.IMUL:
+            case ByteCode.INEG:
+            case ByteCode.IOR:
+            case ByteCode.IREM:
+            case ByteCode.IRETURN:
+            case ByteCode.ISHL:
+            case ByteCode.ISHR:
+            case ByteCode.ISTORE_0:
+            case ByteCode.ISTORE_1:
+            case ByteCode.ISTORE_2:
+            case ByteCode.ISTORE_3:
+            case ByteCode.ISUB:
+            case ByteCode.IUSHR:
+            case ByteCode.IXOR:
+            case ByteCode.L2D:
+            case ByteCode.L2F:
+            case ByteCode.L2I:
+            case ByteCode.LADD:
+            case ByteCode.LALOAD:
+            case ByteCode.LAND:
+            case ByteCode.LASTORE:
+            case ByteCode.LCMP:
+            case ByteCode.LCONST_0:
+            case ByteCode.LCONST_1:
+            case ByteCode.LDIV:
+            case ByteCode.LLOAD_0:
+            case ByteCode.LLOAD_1:
+            case ByteCode.LLOAD_2:
+            case ByteCode.LLOAD_3:
+            case ByteCode.LMUL:
+            case ByteCode.LNEG:
+            case ByteCode.LOR:
+            case ByteCode.LREM:
+            case ByteCode.LRETURN:
+            case ByteCode.LSHL:
+            case ByteCode.LSHR:
+            case ByteCode.LSTORE_0:
+            case ByteCode.LSTORE_1:
+            case ByteCode.LSTORE_2:
+            case ByteCode.LSTORE_3:
+            case ByteCode.LSUB:
+            case ByteCode.LUSHR:
+            case ByteCode.LXOR:
+            case ByteCode.MONITORENTER:
+            case ByteCode.MONITOREXIT:
+            case ByteCode.NOP:
+            case ByteCode.POP:
+            case ByteCode.POP2:
+            case ByteCode.RETURN:
+            case ByteCode.SALOAD:
+            case ByteCode.SASTORE:
+            case ByteCode.SWAP:
+            case ByteCode.WIDE:
+                return 0;
+            case ByteCode.ALOAD:
+            case ByteCode.ANEWARRAY:
+            case ByteCode.ASTORE:
+            case ByteCode.BIPUSH:
+            case ByteCode.CHECKCAST:
+            case ByteCode.DLOAD:
+            case ByteCode.DSTORE:
+            case ByteCode.FLOAD:
+            case ByteCode.FSTORE:
+            case ByteCode.GETFIELD:
+            case ByteCode.GETSTATIC:
+            case ByteCode.GOTO:
+            case ByteCode.GOTO_W:
+            case ByteCode.IFEQ:
+            case ByteCode.IFGE:
+            case ByteCode.IFGT:
+            case ByteCode.IFLE:
+            case ByteCode.IFLT:
+            case ByteCode.IFNE:
+            case ByteCode.IFNONNULL:
+            case ByteCode.IFNULL:
+            case ByteCode.IF_ACMPEQ:
+            case ByteCode.IF_ACMPNE:
+            case ByteCode.IF_ICMPEQ:
+            case ByteCode.IF_ICMPGE:
+            case ByteCode.IF_ICMPGT:
+            case ByteCode.IF_ICMPLE:
+            case ByteCode.IF_ICMPLT:
+            case ByteCode.IF_ICMPNE:
+            case ByteCode.ILOAD:
+            case ByteCode.INSTANCEOF:
+            case ByteCode.INVOKEINTERFACE:
+            case ByteCode.INVOKESPECIAL:
+            case ByteCode.INVOKESTATIC:
+            case ByteCode.INVOKEVIRTUAL:
+            case ByteCode.ISTORE:
+            case ByteCode.JSR:
+            case ByteCode.JSR_W:
+            case ByteCode.LDC:
+            case ByteCode.LDC2_W:
+            case ByteCode.LDC_W:
+            case ByteCode.LLOAD:
+            case ByteCode.LSTORE:
+            case ByteCode.NEW:
+            case ByteCode.NEWARRAY:
+            case ByteCode.PUTFIELD:
+            case ByteCode.PUTSTATIC:
+            case ByteCode.RET:
+            case ByteCode.SIPUSH:
+                return 1;
+
+            case ByteCode.IINC:
+            case ByteCode.MULTIANEWARRAY:
+                return 2;
+
+            case ByteCode.LOOKUPSWITCH:
+            case ByteCode.TABLESWITCH:
+                return -1;
+        }
+        throw new IllegalArgumentException("Bad opcode: "+opcode);
+    }
+
+    /**
+     *  The effect on the operand stack of a given opcode.
+     */
+    static int stackChange(int opcode)
+    {
+        // For INVOKE... accounts only for popping this (unless static),
+        // ignoring parameters and return type
+        switch (opcode) {
+            case ByteCode.DASTORE:
+            case ByteCode.LASTORE:
+                return -4;
+
+            case ByteCode.AASTORE:
+            case ByteCode.BASTORE:
+            case ByteCode.CASTORE:
+            case ByteCode.DCMPG:
+            case ByteCode.DCMPL:
+            case ByteCode.FASTORE:
+            case ByteCode.IASTORE:
+            case ByteCode.LCMP:
+            case ByteCode.SASTORE:
+                return -3;
+
+            case ByteCode.DADD:
+            case ByteCode.DDIV:
+            case ByteCode.DMUL:
+            case ByteCode.DREM:
+            case ByteCode.DRETURN:
+            case ByteCode.DSTORE:
+            case ByteCode.DSTORE_0:
+            case ByteCode.DSTORE_1:
+            case ByteCode.DSTORE_2:
+            case ByteCode.DSTORE_3:
+            case ByteCode.DSUB:
+            case ByteCode.IF_ACMPEQ:
+            case ByteCode.IF_ACMPNE:
+            case ByteCode.IF_ICMPEQ:
+            case ByteCode.IF_ICMPGE:
+            case ByteCode.IF_ICMPGT:
+            case ByteCode.IF_ICMPLE:
+            case ByteCode.IF_ICMPLT:
+            case ByteCode.IF_ICMPNE:
+            case ByteCode.LADD:
+            case ByteCode.LAND:
+            case ByteCode.LDIV:
+            case ByteCode.LMUL:
+            case ByteCode.LOR:
+            case ByteCode.LREM:
+            case ByteCode.LRETURN:
+            case ByteCode.LSTORE:
+            case ByteCode.LSTORE_0:
+            case ByteCode.LSTORE_1:
+            case ByteCode.LSTORE_2:
+            case ByteCode.LSTORE_3:
+            case ByteCode.LSUB:
+            case ByteCode.LXOR:
+            case ByteCode.POP2:
+                return -2;
+
+            case ByteCode.AALOAD:
+            case ByteCode.ARETURN:
+            case ByteCode.ASTORE:
+            case ByteCode.ASTORE_0:
+            case ByteCode.ASTORE_1:
+            case ByteCode.ASTORE_2:
+            case ByteCode.ASTORE_3:
+            case ByteCode.ATHROW:
+            case ByteCode.BALOAD:
+            case ByteCode.CALOAD:
+            case ByteCode.D2F:
+            case ByteCode.D2I:
+            case ByteCode.FADD:
+            case ByteCode.FALOAD:
+            case ByteCode.FCMPG:
+            case ByteCode.FCMPL:
+            case ByteCode.FDIV:
+            case ByteCode.FMUL:
+            case ByteCode.FREM:
+            case ByteCode.FRETURN:
+            case ByteCode.FSTORE:
+            case ByteCode.FSTORE_0:
+            case ByteCode.FSTORE_1:
+            case ByteCode.FSTORE_2:
+            case ByteCode.FSTORE_3:
+            case ByteCode.FSUB:
+            case ByteCode.GETFIELD:
+            case ByteCode.IADD:
+            case ByteCode.IALOAD:
+            case ByteCode.IAND:
+            case ByteCode.IDIV:
+            case ByteCode.IFEQ:
+            case ByteCode.IFGE:
+            case ByteCode.IFGT:
+            case ByteCode.IFLE:
+            case ByteCode.IFLT:
+            case ByteCode.IFNE:
+            case ByteCode.IFNONNULL:
+            case ByteCode.IFNULL:
+            case ByteCode.IMUL:
+            case ByteCode.INVOKEINTERFACE:       //
+            case ByteCode.INVOKESPECIAL:         // but needs to account for
+            case ByteCode.INVOKEVIRTUAL:         // pops 'this' (unless static)
+            case ByteCode.IOR:
+            case ByteCode.IREM:
+            case ByteCode.IRETURN:
+            case ByteCode.ISHL:
+            case ByteCode.ISHR:
+            case ByteCode.ISTORE:
+            case ByteCode.ISTORE_0:
+            case ByteCode.ISTORE_1:
+            case ByteCode.ISTORE_2:
+            case ByteCode.ISTORE_3:
+            case ByteCode.ISUB:
+            case ByteCode.IUSHR:
+            case ByteCode.IXOR:
+            case ByteCode.L2F:
+            case ByteCode.L2I:
+            case ByteCode.LOOKUPSWITCH:
+            case ByteCode.LSHL:
+            case ByteCode.LSHR:
+            case ByteCode.LUSHR:
+            case ByteCode.MONITORENTER:
+            case ByteCode.MONITOREXIT:
+            case ByteCode.POP:
+            case ByteCode.PUTFIELD:
+            case ByteCode.SALOAD:
+            case ByteCode.TABLESWITCH:
+                return -1;
+
+            case ByteCode.ANEWARRAY:
+            case ByteCode.ARRAYLENGTH:
+            case ByteCode.BREAKPOINT:
+            case ByteCode.CHECKCAST:
+            case ByteCode.D2L:
+            case ByteCode.DALOAD:
+            case ByteCode.DNEG:
+            case ByteCode.F2I:
+            case ByteCode.FNEG:
+            case ByteCode.GETSTATIC:
+            case ByteCode.GOTO:
+            case ByteCode.GOTO_W:
+            case ByteCode.I2B:
+            case ByteCode.I2C:
+            case ByteCode.I2F:
+            case ByteCode.I2S:
+            case ByteCode.IINC:
+            case ByteCode.IMPDEP1:
+            case ByteCode.IMPDEP2:
+            case ByteCode.INEG:
+            case ByteCode.INSTANCEOF:
+            case ByteCode.INVOKESTATIC:
+            case ByteCode.L2D:
+            case ByteCode.LALOAD:
+            case ByteCode.LNEG:
+            case ByteCode.NEWARRAY:
+            case ByteCode.NOP:
+            case ByteCode.PUTSTATIC:
+            case ByteCode.RET:
+            case ByteCode.RETURN:
+            case ByteCode.SWAP:
+            case ByteCode.WIDE:
+                return 0;
+
+            case ByteCode.ACONST_NULL:
+            case ByteCode.ALOAD:
+            case ByteCode.ALOAD_0:
+            case ByteCode.ALOAD_1:
+            case ByteCode.ALOAD_2:
+            case ByteCode.ALOAD_3:
+            case ByteCode.BIPUSH:
+            case ByteCode.DUP:
+            case ByteCode.DUP_X1:
+            case ByteCode.DUP_X2:
+            case ByteCode.F2D:
+            case ByteCode.F2L:
+            case ByteCode.FCONST_0:
+            case ByteCode.FCONST_1:
+            case ByteCode.FCONST_2:
+            case ByteCode.FLOAD:
+            case ByteCode.FLOAD_0:
+            case ByteCode.FLOAD_1:
+            case ByteCode.FLOAD_2:
+            case ByteCode.FLOAD_3:
+            case ByteCode.I2D:
+            case ByteCode.I2L:
+            case ByteCode.ICONST_0:
+            case ByteCode.ICONST_1:
+            case ByteCode.ICONST_2:
+            case ByteCode.ICONST_3:
+            case ByteCode.ICONST_4:
+            case ByteCode.ICONST_5:
+            case ByteCode.ICONST_M1:
+            case ByteCode.ILOAD:
+            case ByteCode.ILOAD_0:
+            case ByteCode.ILOAD_1:
+            case ByteCode.ILOAD_2:
+            case ByteCode.ILOAD_3:
+            case ByteCode.JSR:
+            case ByteCode.JSR_W:
+            case ByteCode.LDC:
+            case ByteCode.LDC_W:
+            case ByteCode.MULTIANEWARRAY:
+            case ByteCode.NEW:
+            case ByteCode.SIPUSH:
+                return 1;
+
+            case ByteCode.DCONST_0:
+            case ByteCode.DCONST_1:
+            case ByteCode.DLOAD:
+            case ByteCode.DLOAD_0:
+            case ByteCode.DLOAD_1:
+            case ByteCode.DLOAD_2:
+            case ByteCode.DLOAD_3:
+            case ByteCode.DUP2:
+            case ByteCode.DUP2_X1:
+            case ByteCode.DUP2_X2:
+            case ByteCode.LCONST_0:
+            case ByteCode.LCONST_1:
+            case ByteCode.LDC2_W:
+            case ByteCode.LLOAD:
+            case ByteCode.LLOAD_0:
+            case ByteCode.LLOAD_1:
+            case ByteCode.LLOAD_2:
+            case ByteCode.LLOAD_3:
+                return 2;
+        }
+        throw new IllegalArgumentException("Bad opcode: "+opcode);
+    }
+
+        /*
+         * Number of bytes of operands generated after the opcode.
+         * Not in use currently.
+         */
+/*
+    int extra(int opcode)
+    {
+        switch (opcode) {
+            case ByteCode.AALOAD:
+            case ByteCode.AASTORE:
+            case ByteCode.ACONST_NULL:
+            case ByteCode.ALOAD_0:
+            case ByteCode.ALOAD_1:
+            case ByteCode.ALOAD_2:
+            case ByteCode.ALOAD_3:
+            case ByteCode.ARETURN:
+            case ByteCode.ARRAYLENGTH:
+            case ByteCode.ASTORE_0:
+            case ByteCode.ASTORE_1:
+            case ByteCode.ASTORE_2:
+            case ByteCode.ASTORE_3:
+            case ByteCode.ATHROW:
+            case ByteCode.BALOAD:
+            case ByteCode.BASTORE:
+            case ByteCode.BREAKPOINT:
+            case ByteCode.CALOAD:
+            case ByteCode.CASTORE:
+            case ByteCode.D2F:
+            case ByteCode.D2I:
+            case ByteCode.D2L:
+            case ByteCode.DADD:
+            case ByteCode.DALOAD:
+            case ByteCode.DASTORE:
+            case ByteCode.DCMPG:
+            case ByteCode.DCMPL:
+            case ByteCode.DCONST_0:
+            case ByteCode.DCONST_1:
+            case ByteCode.DDIV:
+            case ByteCode.DLOAD_0:
+            case ByteCode.DLOAD_1:
+            case ByteCode.DLOAD_2:
+            case ByteCode.DLOAD_3:
+            case ByteCode.DMUL:
+            case ByteCode.DNEG:
+            case ByteCode.DREM:
+            case ByteCode.DRETURN:
+            case ByteCode.DSTORE_0:
+            case ByteCode.DSTORE_1:
+            case ByteCode.DSTORE_2:
+            case ByteCode.DSTORE_3:
+            case ByteCode.DSUB:
+            case ByteCode.DUP2:
+            case ByteCode.DUP2_X1:
+            case ByteCode.DUP2_X2:
+            case ByteCode.DUP:
+            case ByteCode.DUP_X1:
+            case ByteCode.DUP_X2:
+            case ByteCode.F2D:
+            case ByteCode.F2I:
+            case ByteCode.F2L:
+            case ByteCode.FADD:
+            case ByteCode.FALOAD:
+            case ByteCode.FASTORE:
+            case ByteCode.FCMPG:
+            case ByteCode.FCMPL:
+            case ByteCode.FCONST_0:
+            case ByteCode.FCONST_1:
+            case ByteCode.FCONST_2:
+            case ByteCode.FDIV:
+            case ByteCode.FLOAD_0:
+            case ByteCode.FLOAD_1:
+            case ByteCode.FLOAD_2:
+            case ByteCode.FLOAD_3:
+            case ByteCode.FMUL:
+            case ByteCode.FNEG:
+            case ByteCode.FREM:
+            case ByteCode.FRETURN:
+            case ByteCode.FSTORE_0:
+            case ByteCode.FSTORE_1:
+            case ByteCode.FSTORE_2:
+            case ByteCode.FSTORE_3:
+            case ByteCode.FSUB:
+            case ByteCode.I2B:
+            case ByteCode.I2C:
+            case ByteCode.I2D:
+            case ByteCode.I2F:
+            case ByteCode.I2L:
+            case ByteCode.I2S:
+            case ByteCode.IADD:
+            case ByteCode.IALOAD:
+            case ByteCode.IAND:
+            case ByteCode.IASTORE:
+            case ByteCode.ICONST_0:
+            case ByteCode.ICONST_1:
+            case ByteCode.ICONST_2:
+            case ByteCode.ICONST_3:
+            case ByteCode.ICONST_4:
+            case ByteCode.ICONST_5:
+            case ByteCode.ICONST_M1:
+            case ByteCode.IDIV:
+            case ByteCode.ILOAD_0:
+            case ByteCode.ILOAD_1:
+            case ByteCode.ILOAD_2:
+            case ByteCode.ILOAD_3:
+            case ByteCode.IMPDEP1:
+            case ByteCode.IMPDEP2:
+            case ByteCode.IMUL:
+            case ByteCode.INEG:
+            case ByteCode.IOR:
+            case ByteCode.IREM:
+            case ByteCode.IRETURN:
+            case ByteCode.ISHL:
+            case ByteCode.ISHR:
+            case ByteCode.ISTORE_0:
+            case ByteCode.ISTORE_1:
+            case ByteCode.ISTORE_2:
+            case ByteCode.ISTORE_3:
+            case ByteCode.ISUB:
+            case ByteCode.IUSHR:
+            case ByteCode.IXOR:
+            case ByteCode.L2D:
+            case ByteCode.L2F:
+            case ByteCode.L2I:
+            case ByteCode.LADD:
+            case ByteCode.LALOAD:
+            case ByteCode.LAND:
+            case ByteCode.LASTORE:
+            case ByteCode.LCMP:
+            case ByteCode.LCONST_0:
+            case ByteCode.LCONST_1:
+            case ByteCode.LDIV:
+            case ByteCode.LLOAD_0:
+            case ByteCode.LLOAD_1:
+            case ByteCode.LLOAD_2:
+            case ByteCode.LLOAD_3:
+            case ByteCode.LMUL:
+            case ByteCode.LNEG:
+            case ByteCode.LOR:
+            case ByteCode.LREM:
+            case ByteCode.LRETURN:
+            case ByteCode.LSHL:
+            case ByteCode.LSHR:
+            case ByteCode.LSTORE_0:
+            case ByteCode.LSTORE_1:
+            case ByteCode.LSTORE_2:
+            case ByteCode.LSTORE_3:
+            case ByteCode.LSUB:
+            case ByteCode.LUSHR:
+            case ByteCode.LXOR:
+            case ByteCode.MONITORENTER:
+            case ByteCode.MONITOREXIT:
+            case ByteCode.NOP:
+            case ByteCode.POP2:
+            case ByteCode.POP:
+            case ByteCode.RETURN:
+            case ByteCode.SALOAD:
+            case ByteCode.SASTORE:
+            case ByteCode.SWAP:
+            case ByteCode.WIDE:
+                return 0;
+
+            case ByteCode.ALOAD:
+            case ByteCode.ASTORE:
+            case ByteCode.BIPUSH:
+            case ByteCode.DLOAD:
+            case ByteCode.DSTORE:
+            case ByteCode.FLOAD:
+            case ByteCode.FSTORE:
+            case ByteCode.ILOAD:
+            case ByteCode.ISTORE:
+            case ByteCode.LDC:
+            case ByteCode.LLOAD:
+            case ByteCode.LSTORE:
+            case ByteCode.NEWARRAY:
+            case ByteCode.RET:
+                return 1;
+
+            case ByteCode.ANEWARRAY:
+            case ByteCode.CHECKCAST:
+            case ByteCode.GETFIELD:
+            case ByteCode.GETSTATIC:
+            case ByteCode.GOTO:
+            case ByteCode.IFEQ:
+            case ByteCode.IFGE:
+            case ByteCode.IFGT:
+            case ByteCode.IFLE:
+            case ByteCode.IFLT:
+            case ByteCode.IFNE:
+            case ByteCode.IFNONNULL:
+            case ByteCode.IFNULL:
+            case ByteCode.IF_ACMPEQ:
+            case ByteCode.IF_ACMPNE:
+            case ByteCode.IF_ICMPEQ:
+            case ByteCode.IF_ICMPGE:
+            case ByteCode.IF_ICMPGT:
+            case ByteCode.IF_ICMPLE:
+            case ByteCode.IF_ICMPLT:
+            case ByteCode.IF_ICMPNE:
+            case ByteCode.IINC:
+            case ByteCode.INSTANCEOF:
+            case ByteCode.INVOKEINTERFACE:
+            case ByteCode.INVOKESPECIAL:
+            case ByteCode.INVOKESTATIC:
+            case ByteCode.INVOKEVIRTUAL:
+            case ByteCode.JSR:
+            case ByteCode.LDC2_W:
+            case ByteCode.LDC_W:
+            case ByteCode.NEW:
+            case ByteCode.PUTFIELD:
+            case ByteCode.PUTSTATIC:
+            case ByteCode.SIPUSH:
+                return 2;
+
+            case ByteCode.MULTIANEWARRAY:
+                return 3;
+
+            case ByteCode.GOTO_W:
+            case ByteCode.JSR_W:
+                return 4;
+
+            case ByteCode.LOOKUPSWITCH:    // depends on alignment
+            case ByteCode.TABLESWITCH: // depends on alignment
+                return -1;
+        }
+        throw new IllegalArgumentException("Bad opcode: "+opcode);
+    }
+*/
+    private static String bytecodeStr(int code)
+    {
+        if (DEBUGSTACK || DEBUGCODE) {
+            switch (code) {
+                case ByteCode.NOP:              return "nop";
+                case ByteCode.ACONST_NULL:      return "aconst_null";
+                case ByteCode.ICONST_M1:        return "iconst_m1";
+                case ByteCode.ICONST_0:         return "iconst_0";
+                case ByteCode.ICONST_1:         return "iconst_1";
+                case ByteCode.ICONST_2:         return "iconst_2";
+                case ByteCode.ICONST_3:         return "iconst_3";
+                case ByteCode.ICONST_4:         return "iconst_4";
+                case ByteCode.ICONST_5:         return "iconst_5";
+                case ByteCode.LCONST_0:         return "lconst_0";
+                case ByteCode.LCONST_1:         return "lconst_1";
+                case ByteCode.FCONST_0:         return "fconst_0";
+                case ByteCode.FCONST_1:         return "fconst_1";
+                case ByteCode.FCONST_2:         return "fconst_2";
+                case ByteCode.DCONST_0:         return "dconst_0";
+                case ByteCode.DCONST_1:         return "dconst_1";
+                case ByteCode.BIPUSH:           return "bipush";
+                case ByteCode.SIPUSH:           return "sipush";
+                case ByteCode.LDC:              return "ldc";
+                case ByteCode.LDC_W:            return "ldc_w";
+                case ByteCode.LDC2_W:           return "ldc2_w";
+                case ByteCode.ILOAD:            return "iload";
+                case ByteCode.LLOAD:            return "lload";
+                case ByteCode.FLOAD:            return "fload";
+                case ByteCode.DLOAD:            return "dload";
+                case ByteCode.ALOAD:            return "aload";
+                case ByteCode.ILOAD_0:          return "iload_0";
+                case ByteCode.ILOAD_1:          return "iload_1";
+                case ByteCode.ILOAD_2:          return "iload_2";
+                case ByteCode.ILOAD_3:          return "iload_3";
+                case ByteCode.LLOAD_0:          return "lload_0";
+                case ByteCode.LLOAD_1:          return "lload_1";
+                case ByteCode.LLOAD_2:          return "lload_2";
+                case ByteCode.LLOAD_3:          return "lload_3";
+                case ByteCode.FLOAD_0:          return "fload_0";
+                case ByteCode.FLOAD_1:          return "fload_1";
+                case ByteCode.FLOAD_2:          return "fload_2";
+                case ByteCode.FLOAD_3:          return "fload_3";
+                case ByteCode.DLOAD_0:          return "dload_0";
+                case ByteCode.DLOAD_1:          return "dload_1";
+                case ByteCode.DLOAD_2:          return "dload_2";
+                case ByteCode.DLOAD_3:          return "dload_3";
+                case ByteCode.ALOAD_0:          return "aload_0";
+                case ByteCode.ALOAD_1:          return "aload_1";
+                case ByteCode.ALOAD_2:          return "aload_2";
+                case ByteCode.ALOAD_3:          return "aload_3";
+                case ByteCode.IALOAD:           return "iaload";
+                case ByteCode.LALOAD:           return "laload";
+                case ByteCode.FALOAD:           return "faload";
+                case ByteCode.DALOAD:           return "daload";
+                case ByteCode.AALOAD:           return "aaload";
+                case ByteCode.BALOAD:           return "baload";
+                case ByteCode.CALOAD:           return "caload";
+                case ByteCode.SALOAD:           return "saload";
+                case ByteCode.ISTORE:           return "istore";
+                case ByteCode.LSTORE:           return "lstore";
+                case ByteCode.FSTORE:           return "fstore";
+                case ByteCode.DSTORE:           return "dstore";
+                case ByteCode.ASTORE:           return "astore";
+                case ByteCode.ISTORE_0:         return "istore_0";
+                case ByteCode.ISTORE_1:         return "istore_1";
+                case ByteCode.ISTORE_2:         return "istore_2";
+                case ByteCode.ISTORE_3:         return "istore_3";
+                case ByteCode.LSTORE_0:         return "lstore_0";
+                case ByteCode.LSTORE_1:         return "lstore_1";
+                case ByteCode.LSTORE_2:         return "lstore_2";
+                case ByteCode.LSTORE_3:         return "lstore_3";
+                case ByteCode.FSTORE_0:         return "fstore_0";
+                case ByteCode.FSTORE_1:         return "fstore_1";
+                case ByteCode.FSTORE_2:         return "fstore_2";
+                case ByteCode.FSTORE_3:         return "fstore_3";
+                case ByteCode.DSTORE_0:         return "dstore_0";
+                case ByteCode.DSTORE_1:         return "dstore_1";
+                case ByteCode.DSTORE_2:         return "dstore_2";
+                case ByteCode.DSTORE_3:         return "dstore_3";
+                case ByteCode.ASTORE_0:         return "astore_0";
+                case ByteCode.ASTORE_1:         return "astore_1";
+                case ByteCode.ASTORE_2:         return "astore_2";
+                case ByteCode.ASTORE_3:         return "astore_3";
+                case ByteCode.IASTORE:          return "iastore";
+                case ByteCode.LASTORE:          return "lastore";
+                case ByteCode.FASTORE:          return "fastore";
+                case ByteCode.DASTORE:          return "dastore";
+                case ByteCode.AASTORE:          return "aastore";
+                case ByteCode.BASTORE:          return "bastore";
+                case ByteCode.CASTORE:          return "castore";
+                case ByteCode.SASTORE:          return "sastore";
+                case ByteCode.POP:              return "pop";
+                case ByteCode.POP2:             return "pop2";
+                case ByteCode.DUP:              return "dup";
+                case ByteCode.DUP_X1:           return "dup_x1";
+                case ByteCode.DUP_X2:           return "dup_x2";
+                case ByteCode.DUP2:             return "dup2";
+                case ByteCode.DUP2_X1:          return "dup2_x1";
+                case ByteCode.DUP2_X2:          return "dup2_x2";
+                case ByteCode.SWAP:             return "swap";
+                case ByteCode.IADD:             return "iadd";
+                case ByteCode.LADD:             return "ladd";
+                case ByteCode.FADD:             return "fadd";
+                case ByteCode.DADD:             return "dadd";
+                case ByteCode.ISUB:             return "isub";
+                case ByteCode.LSUB:             return "lsub";
+                case ByteCode.FSUB:             return "fsub";
+                case ByteCode.DSUB:             return "dsub";
+                case ByteCode.IMUL:             return "imul";
+                case ByteCode.LMUL:             return "lmul";
+                case ByteCode.FMUL:             return "fmul";
+                case ByteCode.DMUL:             return "dmul";
+                case ByteCode.IDIV:             return "idiv";
+                case ByteCode.LDIV:             return "ldiv";
+                case ByteCode.FDIV:             return "fdiv";
+                case ByteCode.DDIV:             return "ddiv";
+                case ByteCode.IREM:             return "irem";
+                case ByteCode.LREM:             return "lrem";
+                case ByteCode.FREM:             return "frem";
+                case ByteCode.DREM:             return "drem";
+                case ByteCode.INEG:             return "ineg";
+                case ByteCode.LNEG:             return "lneg";
+                case ByteCode.FNEG:             return "fneg";
+                case ByteCode.DNEG:             return "dneg";
+                case ByteCode.ISHL:             return "ishl";
+                case ByteCode.LSHL:             return "lshl";
+                case ByteCode.ISHR:             return "ishr";
+                case ByteCode.LSHR:             return "lshr";
+                case ByteCode.IUSHR:            return "iushr";
+                case ByteCode.LUSHR:            return "lushr";
+                case ByteCode.IAND:             return "iand";
+                case ByteCode.LAND:             return "land";
+                case ByteCode.IOR:              return "ior";
+                case ByteCode.LOR:              return "lor";
+                case ByteCode.IXOR:             return "ixor";
+                case ByteCode.LXOR:             return "lxor";
+                case ByteCode.IINC:             return "iinc";
+                case ByteCode.I2L:              return "i2l";
+                case ByteCode.I2F:              return "i2f";
+                case ByteCode.I2D:              return "i2d";
+                case ByteCode.L2I:              return "l2i";
+                case ByteCode.L2F:              return "l2f";
+                case ByteCode.L2D:              return "l2d";
+                case ByteCode.F2I:              return "f2i";
+                case ByteCode.F2L:              return "f2l";
+                case ByteCode.F2D:              return "f2d";
+                case ByteCode.D2I:              return "d2i";
+                case ByteCode.D2L:              return "d2l";
+                case ByteCode.D2F:              return "d2f";
+                case ByteCode.I2B:              return "i2b";
+                case ByteCode.I2C:              return "i2c";
+                case ByteCode.I2S:              return "i2s";
+                case ByteCode.LCMP:             return "lcmp";
+                case ByteCode.FCMPL:            return "fcmpl";
+                case ByteCode.FCMPG:            return "fcmpg";
+                case ByteCode.DCMPL:            return "dcmpl";
+                case ByteCode.DCMPG:            return "dcmpg";
+                case ByteCode.IFEQ:             return "ifeq";
+                case ByteCode.IFNE:             return "ifne";
+                case ByteCode.IFLT:             return "iflt";
+                case ByteCode.IFGE:             return "ifge";
+                case ByteCode.IFGT:             return "ifgt";
+                case ByteCode.IFLE:             return "ifle";
+                case ByteCode.IF_ICMPEQ:        return "if_icmpeq";
+                case ByteCode.IF_ICMPNE:        return "if_icmpne";
+                case ByteCode.IF_ICMPLT:        return "if_icmplt";
+                case ByteCode.IF_ICMPGE:        return "if_icmpge";
+                case ByteCode.IF_ICMPGT:        return "if_icmpgt";
+                case ByteCode.IF_ICMPLE:        return "if_icmple";
+                case ByteCode.IF_ACMPEQ:        return "if_acmpeq";
+                case ByteCode.IF_ACMPNE:        return "if_acmpne";
+                case ByteCode.GOTO:             return "goto";
+                case ByteCode.JSR:              return "jsr";
+                case ByteCode.RET:              return "ret";
+                case ByteCode.TABLESWITCH:      return "tableswitch";
+                case ByteCode.LOOKUPSWITCH:     return "lookupswitch";
+                case ByteCode.IRETURN:          return "ireturn";
+                case ByteCode.LRETURN:          return "lreturn";
+                case ByteCode.FRETURN:          return "freturn";
+                case ByteCode.DRETURN:          return "dreturn";
+                case ByteCode.ARETURN:          return "areturn";
+                case ByteCode.RETURN:           return "return";
+                case ByteCode.GETSTATIC:        return "getstatic";
+                case ByteCode.PUTSTATIC:        return "putstatic";
+                case ByteCode.GETFIELD:         return "getfield";
+                case ByteCode.PUTFIELD:         return "putfield";
+                case ByteCode.INVOKEVIRTUAL:    return "invokevirtual";
+                case ByteCode.INVOKESPECIAL:    return "invokespecial";
+                case ByteCode.INVOKESTATIC:     return "invokestatic";
+                case ByteCode.INVOKEINTERFACE:  return "invokeinterface";
+                case ByteCode.NEW:              return "new";
+                case ByteCode.NEWARRAY:         return "newarray";
+                case ByteCode.ANEWARRAY:        return "anewarray";
+                case ByteCode.ARRAYLENGTH:      return "arraylength";
+                case ByteCode.ATHROW:           return "athrow";
+                case ByteCode.CHECKCAST:        return "checkcast";
+                case ByteCode.INSTANCEOF:       return "instanceof";
+                case ByteCode.MONITORENTER:     return "monitorenter";
+                case ByteCode.MONITOREXIT:      return "monitorexit";
+                case ByteCode.WIDE:             return "wide";
+                case ByteCode.MULTIANEWARRAY:   return "multianewarray";
+                case ByteCode.IFNULL:           return "ifnull";
+                case ByteCode.IFNONNULL:        return "ifnonnull";
+                case ByteCode.GOTO_W:           return "goto_w";
+                case ByteCode.JSR_W:            return "jsr_w";
+                case ByteCode.BREAKPOINT:       return "breakpoint";
+
+                case ByteCode.IMPDEP1:          return "impdep1";
+                case ByteCode.IMPDEP2:          return "impdep2";
+            }
+        }
+        return "";
+    }
+
+    final char[] getCharBuffer(int minimalSize)
+    {
+        if (minimalSize > tmpCharBuffer.length) {
+            int newSize = tmpCharBuffer.length * 2;
+            if (minimalSize > newSize) { newSize = minimalSize; }
+            tmpCharBuffer = new char[newSize];
+        }
+        return tmpCharBuffer;
+    }
+
+    private static final int LineNumberTableSize = 16;
+    private static final int ExceptionTableSize = 4;
+
+    private final static long FileHeaderConstant = 0xCAFEBABE0003002DL;
+    // Set DEBUG flags to true to get better checking and progress info.
+    private static final boolean DEBUGSTACK = false;
+    private static final boolean DEBUGLABELS = false;
+    private static final boolean DEBUGCODE = false;
+
+    private String generatedClassName;
+
+    private ExceptionTableEntry itsExceptionTable[];
+    private int itsExceptionTableTop;
+
+    private int itsLineNumberTable[];   // pack start_pc & line_number together
+    private int itsLineNumberTableTop;
+
+    private byte[] itsCodeBuffer = new byte[256];
+    private int itsCodeBufferTop;
+
+    private ConstantPool itsConstantPool;
+
+    private ClassFileMethod itsCurrentMethod;
+    private short itsStackTop;
+
+    private short itsMaxStack;
+    private short itsMaxLocals;
+
+    private ObjArray itsMethods = new ObjArray();
+    private ObjArray itsFields = new ObjArray();
+    private ObjArray itsInterfaces = new ObjArray();
+
+    private short itsFlags;
+    private short itsThisClassIndex;
+    private short itsSuperClassIndex;
+    private short itsSourceFileNameIndex;
+
+    private static final int MIN_LABEL_TABLE_SIZE = 32;
+    private int[] itsLabelTable;
+    private int itsLabelTableTop;
+
+// itsFixupTable[i] = (label_index << 32) | fixup_site
+    private static final int MIN_FIXUP_TABLE_SIZE = 40;
+    private long[] itsFixupTable;
+    private int itsFixupTableTop;
+    private ObjArray itsVarDescriptors;
+
+    private char[] tmpCharBuffer = new char[64];
+}
+
+final class ExceptionTableEntry
+{
+
+    ExceptionTableEntry(int startLabel, int endLabel,
+                        int handlerLabel, short catchType)
+    {
+        itsStartLabel = startLabel;
+        itsEndLabel = endLabel;
+        itsHandlerLabel = handlerLabel;
+        itsCatchType = catchType;
+    }
+
+    int itsStartLabel;
+    int itsEndLabel;
+    int itsHandlerLabel;
+    short itsCatchType;
+}
+
+final class ClassFileField
+{
+
+    ClassFileField(short nameIndex, short typeIndex, short flags)
+    {
+        itsNameIndex = nameIndex;
+        itsTypeIndex = typeIndex;
+        itsFlags = flags;
+        itsHasAttributes = false;
+    }
+
+    void setAttributes(short attr1, short attr2, short attr3, int index)
+    {
+        itsHasAttributes = true;
+        itsAttr1 = attr1;
+        itsAttr2 = attr2;
+        itsAttr3 = attr3;
+        itsIndex = index;
+    }
+
+    int write(byte[] data, int offset)
+    {
+        offset = ClassFileWriter.putInt16(itsFlags, data, offset);
+        offset = ClassFileWriter.putInt16(itsNameIndex, data, offset);
+        offset = ClassFileWriter.putInt16(itsTypeIndex, data, offset);
+        if (!itsHasAttributes) {
+            // write 0 attributes
+            offset = ClassFileWriter.putInt16(0, data, offset);
+        } else {
+            offset = ClassFileWriter.putInt16(1, data, offset);
+            offset = ClassFileWriter.putInt16(itsAttr1, data, offset);
+            offset = ClassFileWriter.putInt16(itsAttr2, data, offset);
+            offset = ClassFileWriter.putInt16(itsAttr3, data, offset);
+            offset = ClassFileWriter.putInt16(itsIndex, data, offset);
+        }
+        return offset;
+    }
+
+    int getWriteSize()
+    {
+        int size = 2 * 3;
+        if (!itsHasAttributes) {
+            size += 2;
+        } else {
+            size += 2 + 2 * 4;
+        }
+        return size;
+    }
+
+    private short itsNameIndex;
+    private short itsTypeIndex;
+    private short itsFlags;
+    private boolean itsHasAttributes;
+    private short itsAttr1, itsAttr2, itsAttr3;
+    private int itsIndex;
+}
+
+final class ClassFileMethod
+{
+
+    ClassFileMethod(short nameIndex, short typeIndex, short flags)
+    {
+        itsNameIndex = nameIndex;
+        itsTypeIndex = typeIndex;
+        itsFlags = flags;
+    }
+
+    void setCodeAttribute(byte codeAttribute[])
+    {
+        itsCodeAttribute = codeAttribute;
+    }
+
+    int write(byte[] data, int offset)
+    {
+        offset = ClassFileWriter.putInt16(itsFlags, data, offset);
+        offset = ClassFileWriter.putInt16(itsNameIndex, data, offset);
+        offset = ClassFileWriter.putInt16(itsTypeIndex, data, offset);
+        // Code attribute only
+        offset = ClassFileWriter.putInt16(1, data, offset);
+        System.arraycopy(itsCodeAttribute, 0, data, offset,
+                         itsCodeAttribute.length);
+        offset += itsCodeAttribute.length;
+        return offset;
+    }
+
+    int getWriteSize()
+    {
+        return 2 * 4 + itsCodeAttribute.length;
+    }
+
+    private short itsNameIndex;
+    private short itsTypeIndex;
+    private short itsFlags;
+    private byte[] itsCodeAttribute;
+
+}
+
+final class ConstantPool
+{
+
+    ConstantPool(ClassFileWriter cfw)
+    {
+        this.cfw = cfw;
+        itsTopIndex = 1;       // the zero'th entry is reserved
+        itsPool = new byte[ConstantPoolSize];
+        itsTop = 0;
+    }
+
+    private static final int ConstantPoolSize = 256;
+    private static final byte
+        CONSTANT_Class = 7,
+        CONSTANT_Fieldref = 9,
+        CONSTANT_Methodref = 10,
+        CONSTANT_InterfaceMethodref = 11,
+        CONSTANT_String = 8,
+        CONSTANT_Integer = 3,
+        CONSTANT_Float = 4,
+        CONSTANT_Long = 5,
+        CONSTANT_Double = 6,
+        CONSTANT_NameAndType = 12,
+        CONSTANT_Utf8 = 1;
+
+    int write(byte[] data, int offset)
+    {
+        offset = ClassFileWriter.putInt16((short)itsTopIndex, data, offset);
+        System.arraycopy(itsPool, 0, data, offset, itsTop);
+        offset += itsTop;
+        return offset;
+    }
+
+    int getWriteSize()
+    {
+        return 2 + itsTop;
+    }
+
+    int addConstant(int k)
+    {
+        ensure(5);
+        itsPool[itsTop++] = CONSTANT_Integer;
+        itsTop = ClassFileWriter.putInt32(k, itsPool, itsTop);
+        return (short)(itsTopIndex++);
+    }
+
+    int addConstant(long k)
+    {
+        ensure(9);
+        itsPool[itsTop++] = CONSTANT_Long;
+        itsTop = ClassFileWriter.putInt64(k, itsPool, itsTop);
+        int index = itsTopIndex;
+        itsTopIndex += 2;
+        return index;
+    }
+
+    int addConstant(float k)
+    {
+        ensure(5);
+        itsPool[itsTop++] = CONSTANT_Float;
+        int bits = Float.floatToIntBits(k);
+        itsTop = ClassFileWriter.putInt32(bits, itsPool, itsTop);
+        return itsTopIndex++;
+    }
+
+    int addConstant(double k)
+    {
+        ensure(9);
+        itsPool[itsTop++] = CONSTANT_Double;
+        long bits = Double.doubleToLongBits(k);
+        itsTop = ClassFileWriter.putInt64(bits, itsPool, itsTop);
+        int index = itsTopIndex;
+        itsTopIndex += 2;
+        return index;
+    }
+
+    int addConstant(String k)
+    {
+        int utf8Index = 0xFFFF & addUtf8(k);
+        int theIndex = itsStringConstHash.getInt(utf8Index, -1);
+        if (theIndex == -1) {
+            theIndex = itsTopIndex++;
+            ensure(3);
+            itsPool[itsTop++] = CONSTANT_String;
+            itsTop = ClassFileWriter.putInt16(utf8Index, itsPool, itsTop);
+            itsStringConstHash.put(utf8Index, theIndex);
+        }
+        return theIndex;
+    }
+
+    boolean isUnderUtfEncodingLimit(String s)
+    {
+        int strLen = s.length();
+        if (strLen * 3 <= MAX_UTF_ENCODING_SIZE) {
+            return true;
+        } else if (strLen > MAX_UTF_ENCODING_SIZE) {
+            return false;
+        }
+        return strLen == getUtfEncodingLimit(s, 0, strLen);
+    }
+
+    /**
+     * Get maximum i such that <tt>start <= i <= end</tt> and
+     * <tt>s.substring(start, i)</tt> fits JVM UTF string encoding limit.
+     */
+    int getUtfEncodingLimit(String s, int start, int end)
+    {
+        if ((end - start) * 3 <= MAX_UTF_ENCODING_SIZE) {
+            return end;
+        }
+        int limit = MAX_UTF_ENCODING_SIZE;
+        for (int i = start; i != end; i++) {
+            int c = s.charAt(i);
+            if (0 != c && c <= 0x7F) {
+                --limit;
+            } else if (c < 0x7FF) {
+                limit -= 2;
+            } else {
+                limit -= 3;
+            }
+            if (limit < 0) {
+                return i;
+            }
+        }
+        return end;
+    }
+
+    short addUtf8(String k)
+    {
+        int theIndex = itsUtf8Hash.get(k, -1);
+        if (theIndex == -1) {
+            int strLen = k.length();
+            boolean tooBigString;
+            if (strLen > MAX_UTF_ENCODING_SIZE) {
+                tooBigString = true;
+            } else {
+                tooBigString = false;
+                // Ask for worst case scenario buffer when each char takes 3
+                // bytes
+                ensure(1 + 2 + strLen * 3);
+                int top = itsTop;
+
+                itsPool[top++] = CONSTANT_Utf8;
+                top += 2; // skip length
+
+                char[] chars = cfw.getCharBuffer(strLen);
+                k.getChars(0, strLen, chars, 0);
+
+                for (int i = 0; i != strLen; i++) {
+                    int c = chars[i];
+                    if (c != 0 && c <= 0x7F) {
+                        itsPool[top++] = (byte)c;
+                    } else if (c > 0x7FF) {
+                        itsPool[top++] = (byte)(0xE0 | (c >> 12));
+                        itsPool[top++] = (byte)(0x80 | ((c >> 6) & 0x3F));
+                        itsPool[top++] = (byte)(0x80 | (c & 0x3F));
+                    } else {
+                        itsPool[top++] = (byte)(0xC0 | (c >> 6));
+                        itsPool[top++] = (byte)(0x80 | (c & 0x3F));
+                    }
+                }
+
+                int utfLen = top - (itsTop + 1 + 2);
+                if (utfLen > MAX_UTF_ENCODING_SIZE) {
+                    tooBigString = true;
+                } else {
+                    // Write back length
+                    itsPool[itsTop + 1] = (byte)(utfLen >>> 8);
+                    itsPool[itsTop + 2] = (byte)utfLen;
+
+                    itsTop = top;
+                    theIndex = itsTopIndex++;
+                    itsUtf8Hash.put(k, theIndex);
+                }
+            }
+            if (tooBigString) {
+                throw new IllegalArgumentException("Too big string");
+            }
+        }
+        return (short)theIndex;
+    }
+
+    private short addNameAndType(String name, String type)
+    {
+        short nameIndex = addUtf8(name);
+        short typeIndex = addUtf8(type);
+        ensure(5);
+        itsPool[itsTop++] = CONSTANT_NameAndType;
+        itsTop = ClassFileWriter.putInt16(nameIndex, itsPool, itsTop);
+        itsTop = ClassFileWriter.putInt16(typeIndex, itsPool, itsTop);
+        return (short)(itsTopIndex++);
+    }
+
+    short addClass(String className)
+    {
+        int theIndex = itsClassHash.get(className, -1);
+        if (theIndex == -1) {
+            String slashed = className;
+            if (className.indexOf('.') > 0) {
+                slashed = ClassFileWriter.getSlashedForm(className);
+                theIndex = itsClassHash.get(slashed, -1);
+                if (theIndex != -1) {
+                    itsClassHash.put(className, theIndex);
+                }
+            }
+            if (theIndex == -1) {
+                int utf8Index = addUtf8(slashed);
+                ensure(3);
+                itsPool[itsTop++] = CONSTANT_Class;
+                itsTop = ClassFileWriter.putInt16(utf8Index, itsPool, itsTop);
+                theIndex = itsTopIndex++;
+                itsClassHash.put(slashed, theIndex);
+                if (className != slashed) {
+                    itsClassHash.put(className, theIndex);
+                }
+            }
+        }
+        return (short)theIndex;
+    }
+
+    short addFieldRef(String className, String fieldName, String fieldType)
+    {
+        FieldOrMethodRef ref = new FieldOrMethodRef(className, fieldName,
+                                                    fieldType);
+
+        int theIndex = itsFieldRefHash.get(ref, -1);
+        if (theIndex == -1) {
+            short ntIndex = addNameAndType(fieldName, fieldType);
+            short classIndex = addClass(className);
+            ensure(5);
+            itsPool[itsTop++] = CONSTANT_Fieldref;
+            itsTop = ClassFileWriter.putInt16(classIndex, itsPool, itsTop);
+            itsTop = ClassFileWriter.putInt16(ntIndex, itsPool, itsTop);
+            theIndex = itsTopIndex++;
+            itsFieldRefHash.put(ref, theIndex);
+        }
+        return (short)theIndex;
+    }
+
+    short addMethodRef(String className, String methodName,
+                       String methodType)
+    {
+        FieldOrMethodRef ref = new FieldOrMethodRef(className, methodName,
+                                                    methodType);
+
+        int theIndex = itsMethodRefHash.get(ref, -1);
+        if (theIndex == -1) {
+            short ntIndex = addNameAndType(methodName, methodType);
+            short classIndex = addClass(className);
+            ensure(5);
+            itsPool[itsTop++] = CONSTANT_Methodref;
+            itsTop = ClassFileWriter.putInt16(classIndex, itsPool, itsTop);
+            itsTop = ClassFileWriter.putInt16(ntIndex, itsPool, itsTop);
+            theIndex = itsTopIndex++;
+            itsMethodRefHash.put(ref, theIndex);
+        }
+        return (short)theIndex;
+    }
+
+    short addInterfaceMethodRef(String className,
+                                String methodName, String methodType)
+    {
+        short ntIndex = addNameAndType(methodName, methodType);
+        short classIndex = addClass(className);
+        ensure(5);
+        itsPool[itsTop++] = CONSTANT_InterfaceMethodref;
+        itsTop = ClassFileWriter.putInt16(classIndex, itsPool, itsTop);
+        itsTop = ClassFileWriter.putInt16(ntIndex, itsPool, itsTop);
+        return (short)(itsTopIndex++);
+    }
+
+    void ensure(int howMuch)
+    {
+        if (itsTop + howMuch > itsPool.length) {
+            int newCapacity = itsPool.length * 2;
+            if (itsTop + howMuch > newCapacity) {
+                newCapacity = itsTop + howMuch;
+            }
+            byte[] tmp = new byte[newCapacity];
+            System.arraycopy(itsPool, 0, tmp, 0, itsTop);
+            itsPool = tmp;
+        }
+    }
+
+    private ClassFileWriter cfw;
+
+    private static final int MAX_UTF_ENCODING_SIZE = 65535;
+
+    private UintMap itsStringConstHash = new UintMap();
+    private ObjToIntMap itsUtf8Hash = new ObjToIntMap();
+    private ObjToIntMap itsFieldRefHash = new ObjToIntMap();
+    private ObjToIntMap itsMethodRefHash = new ObjToIntMap();
+    private ObjToIntMap itsClassHash = new ObjToIntMap();
+
+    private int itsTop;
+    private int itsTopIndex;
+    private byte itsPool[];
+}
+
+final class FieldOrMethodRef
+{
+    FieldOrMethodRef(String className, String name, String type)
+    {
+        this.className = className;
+        this.name = name;
+        this.type = type;
+    }
+
+    public boolean equals(Object obj)
+    {
+        if (!(obj instanceof FieldOrMethodRef)) { return false; }
+        FieldOrMethodRef x = (FieldOrMethodRef)obj;
+        return className.equals(x.className)
+            && name.equals(x.name)
+            && type.equals(x.type);
+    }
+
+    public int hashCode()
+    {
+        if (hashCode == -1) {
+            int h1 = className.hashCode();
+            int h2 = name.hashCode();
+            int h3 = type.hashCode();
+            hashCode = h1 ^ h2 ^ h3;
+        }
+        return hashCode;
+    }
+
+    private String className;
+    private String name;
+    private String type;
+    private int hashCode = -1;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Arguments.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Arguments.java
new file mode 100644
index 0000000..954b078
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Arguments.java
@@ -0,0 +1,311 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements the "arguments" object.
+ *
+ * See ECMA 10.1.8
+ *
+ * @see org.mozilla.javascript.NativeCall
+ * @author Norris Boyd
+ */
+final class Arguments extends IdScriptableObject
+{
+    static final long serialVersionUID = 4275508002492040609L;
+
+    public Arguments(NativeCall activation)
+    {
+        this.activation = activation;
+
+        Scriptable parent = activation.getParentScope();
+        setParentScope(parent);
+        setPrototype(ScriptableObject.getObjectPrototype(parent));
+
+        args = activation.originalArgs;
+        lengthObj = new Integer(args.length);
+
+        NativeFunction f = activation.function;
+        calleeObj = f;
+
+        int version = f.getLanguageVersion();
+        if (version <= Context.VERSION_1_3
+            && version != Context.VERSION_DEFAULT)
+        {
+            callerObj = null;
+        } else {
+            callerObj = NOT_FOUND;
+        }
+    }
+
+    public String getClassName()
+    {
+        return "Object";
+    }
+
+    public boolean has(int index, Scriptable start)
+    {
+        if (0 <= index && index < args.length) {
+            if (args[index] != NOT_FOUND) {
+                return true;
+            }
+        }
+        return super.has(index, start);
+    }
+
+    public Object get(int index, Scriptable start)
+    {
+        if (0 <= index && index < args.length) {
+            Object value = args[index];
+            if (value != NOT_FOUND) {
+                if (sharedWithActivation(index)) {
+                    NativeFunction f = activation.function;
+                    String argName = f.getParamOrVarName(index);
+                    value = activation.get(argName, activation);
+                    if (value == NOT_FOUND) Kit.codeBug();
+                }
+                return value;
+            }
+        }
+        return super.get(index, start);
+    }
+
+    private boolean sharedWithActivation(int index)
+    {
+        NativeFunction f = activation.function;
+        int definedCount = f.getParamCount();
+        if (index < definedCount) {
+            // Check if argument is not hidden by later argument with the same
+            // name as hidden arguments are not shared with activation
+            if (index < definedCount - 1) {
+                String argName = f.getParamOrVarName(index);
+                for (int i = index + 1; i < definedCount; i++) {
+                    if (argName.equals(f.getParamOrVarName(i))) {
+                        return false;
+                    }
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+
+    public void put(int index, Scriptable start, Object value)
+    {
+        if (0 <= index && index < args.length) {
+            if (args[index] != NOT_FOUND) {
+                if (sharedWithActivation(index)) {
+                    String argName;
+                    argName = activation.function.getParamOrVarName(index);
+                    activation.put(argName, activation, value);
+                    return;
+                }
+                synchronized (this) {
+                    if (args[index] != NOT_FOUND) {
+                        if (args == activation.originalArgs) {
+                            args = args.clone();
+                        }
+                        args[index] = value;
+                        return;
+                    }
+                }
+            }
+        }
+        super.put(index, start, value);
+    }
+
+    public void delete(int index)
+    {
+        if (0 <= index && index < args.length) {
+            synchronized (this) {
+                if (args[index] != NOT_FOUND) {
+                    if (args == activation.originalArgs) {
+                        args = args.clone();
+                    }
+                    args[index] = NOT_FOUND;
+                    return;
+                }
+            }
+        }
+        super.delete(index);
+    }
+
+// #string_id_map#
+
+    private static final int
+        Id_callee           = 1,
+        Id_length           = 2,
+        Id_caller           = 3,
+
+        MAX_INSTANCE_ID     = 3;
+
+    protected int getMaxInstanceId()
+    {
+        return MAX_INSTANCE_ID;
+    }
+
+    protected int findInstanceIdInfo(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:15:04 EDT
+        L0: { id = 0; String X = null; int c;
+            if (s.length()==6) {
+                c=s.charAt(5);
+                if (c=='e') { X="callee";id=Id_callee; }
+                else if (c=='h') { X="length";id=Id_length; }
+                else if (c=='r') { X="caller";id=Id_caller; }
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+
+        if (id == 0) return super.findInstanceIdInfo(s);
+
+        int attr;
+        switch (id) {
+          case Id_callee:
+          case Id_caller:
+          case Id_length:
+            attr = DONTENUM;
+            break;
+          default: throw new IllegalStateException();
+        }
+        return instanceIdInfo(attr, id);
+    }
+
+// #/string_id_map#
+
+    protected String getInstanceIdName(int id)
+    {
+        switch (id) {
+            case Id_callee: return "callee";
+            case Id_length: return "length";
+            case Id_caller: return "caller";
+        }
+        return null;
+    }
+
+    protected Object getInstanceIdValue(int id)
+    {
+        switch (id) {
+            case Id_callee: return calleeObj;
+            case Id_length: return lengthObj;
+            case Id_caller: {
+                Object value = callerObj;
+                if (value == UniqueTag.NULL_VALUE) { value = null; }
+                else if (value == null) {
+                    NativeCall caller = activation.parentActivationCall;
+                    if (caller != null) {
+                        value = caller.get("arguments", caller);
+                    }
+                }
+                return value;
+            }
+        }
+        return super.getInstanceIdValue(id);
+    }
+
+    protected void setInstanceIdValue(int id, Object value)
+    {
+        switch (id) {
+            case Id_callee: calleeObj = value; return;
+            case Id_length: lengthObj = value; return;
+            case Id_caller:
+                callerObj = (value != null) ? value : UniqueTag.NULL_VALUE;
+                return;
+        }
+        super.setInstanceIdValue(id, value);
+    }
+
+    Object[] getIds(boolean getAll)
+    {
+        Object[] ids = super.getIds(getAll);
+        if (getAll && args.length != 0) {
+            boolean[] present = null;
+            int extraCount = args.length;
+            for (int i = 0; i != ids.length; ++i) {
+                Object id = ids[i];
+                if (id instanceof Integer) {
+                    int index = ((Integer)id).intValue();
+                    if (0 <= index && index < args.length) {
+                        if (present == null) {
+                            present = new boolean[args.length];
+                        }
+                        if (!present[index]) {
+                            present[index] = true;
+                            extraCount--;
+                        }
+                    }
+                }
+            }
+            if (extraCount != 0) {
+                Object[] tmp = new Object[extraCount + ids.length];
+                System.arraycopy(ids, 0, tmp, extraCount, ids.length);
+                ids = tmp;
+                int offset = 0;
+                for (int i = 0; i != args.length; ++i) {
+                    if (present == null || !present[i]) {
+                        ids[offset] = new Integer(i);
+                        ++offset;
+                    }
+                }
+                if (offset != extraCount) Kit.codeBug();
+            }
+        }
+        return ids;
+    }
+
+// Fields to hold caller, callee and length properties,
+// where NOT_FOUND value tags deleted properties.
+// In addition if callerObj == NULL_VALUE, it tags null for scripts, as
+// initial callerObj == null means access to caller arguments available
+// only in JS <= 1.3 scripts
+    private Object callerObj;
+    private Object calleeObj;
+    private Object lengthObj;
+
+    private NativeCall activation;
+
+// Initially args holds activation.getOriginalArgs(), but any modification
+// of its elements triggers creation of a copy. If its element holds NOT_FOUND,
+// it indicates deleted index, in which case super class is queried.
+    private Object[] args;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/BaseFunction.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/BaseFunction.java
new file mode 100644
index 0000000..d7d8992
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/BaseFunction.java
@@ -0,0 +1,553 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Roger Lawrence
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * The base class for Function objects
+ * See ECMA 15.3.
+ * @author Norris Boyd
+ */
+public class BaseFunction extends IdScriptableObject implements Function
+{
+
+    static final long serialVersionUID = 5311394446546053859L;
+
+    private static final Object FUNCTION_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        BaseFunction obj = new BaseFunction();
+        // Function.prototype attributes: see ECMA 15.3.3.1 
+        obj.prototypePropertyAttributes = DONTENUM | READONLY | PERMANENT;
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    public BaseFunction()
+    {
+    }
+
+    public BaseFunction(Scriptable scope, Scriptable prototype)
+    {
+        super(scope, prototype);
+    }
+
+    public String getClassName() {
+        return "Function";
+    }
+
+    /**
+     * Implements the instanceof operator for JavaScript Function objects.
+     * <p>
+     * <code>
+     * foo = new Foo();<br>
+     * foo instanceof Foo;  // true<br>
+     * </code>
+     *
+     * @param instance The value that appeared on the LHS of the instanceof
+     *              operator
+     * @return true if the "prototype" property of "this" appears in
+     *              value's prototype chain
+     *
+     */
+    public boolean hasInstance(Scriptable instance)
+    {
+        Object protoProp = ScriptableObject.getProperty(this, "prototype");
+        if (protoProp instanceof Scriptable) {
+            return ScriptRuntime.jsDelegatesTo(instance, (Scriptable)protoProp);
+        }
+        throw ScriptRuntime.typeError1("msg.instanceof.bad.prototype",
+                                       getFunctionName());
+    }
+
+// #string_id_map#
+
+    private static final int
+        Id_length       = 1,
+        Id_arity        = 2,
+        Id_name         = 3,
+        Id_prototype    = 4,
+        Id_arguments    = 5,
+
+        MAX_INSTANCE_ID = 5;
+
+    protected int getMaxInstanceId()
+    {
+        return MAX_INSTANCE_ID;
+    }
+
+    protected int findInstanceIdInfo(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:15:15 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 4: X="name";id=Id_name; break L;
+            case 5: X="arity";id=Id_arity; break L;
+            case 6: X="length";id=Id_length; break L;
+            case 9: c=s.charAt(0);
+                if (c=='a') { X="arguments";id=Id_arguments; }
+                else if (c=='p') { X="prototype";id=Id_prototype; }
+                break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+// #/string_id_map#
+
+        if (id == 0) return super.findInstanceIdInfo(s);
+
+        int attr;
+        switch (id) {
+          case Id_length:
+          case Id_arity:
+          case Id_name:
+            attr = DONTENUM | READONLY | PERMANENT;
+            break;
+          case Id_prototype:
+            attr = prototypePropertyAttributes;
+            break;
+          case Id_arguments:
+            attr = DONTENUM | PERMANENT;
+            break;
+          default: throw new IllegalStateException();
+        }
+        return instanceIdInfo(attr, id);
+    }
+
+    protected String getInstanceIdName(int id)
+    {
+        switch (id) {
+            case Id_length:       return "length";
+            case Id_arity:        return "arity";
+            case Id_name:         return "name";
+            case Id_prototype:    return "prototype";
+            case Id_arguments:    return "arguments";
+        }
+        return super.getInstanceIdName(id);
+    }
+
+    protected Object getInstanceIdValue(int id)
+    {
+        switch (id) {
+          case Id_length:    return ScriptRuntime.wrapInt(getLength());
+          case Id_arity:     return ScriptRuntime.wrapInt(getArity());
+          case Id_name:      return getFunctionName();
+          case Id_prototype: return getPrototypeProperty();
+          case Id_arguments: return getArguments();
+        }
+        return super.getInstanceIdValue(id);
+    }
+
+    protected void setInstanceIdValue(int id, Object value)
+    {
+        if (id == Id_prototype) {
+            if ((prototypePropertyAttributes & READONLY) == 0) {
+                prototypeProperty = (value != null)
+                                    ? value : UniqueTag.NULL_VALUE;
+            }
+            return;
+        } else if (id == Id_arguments) {
+            if (value == NOT_FOUND) {
+                // This should not be called since "arguments" is PERMANENT
+                Kit.codeBug();
+            }
+            defaultPut("arguments", value);
+        }
+        super.setInstanceIdValue(id, value);
+    }
+
+    protected void fillConstructorProperties(IdFunctionObject ctor)
+    {
+        // Fix up bootstrapping problem: getPrototype of the IdFunctionObject
+        // can not return Function.prototype because Function object is not
+        // yet defined.
+        ctor.setPrototype(this);
+        super.fillConstructorProperties(ctor);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor: arity=1; s="constructor"; break;
+          case Id_toString:    arity=1; s="toString";    break;
+          case Id_toSource:    arity=1; s="toSource";    break;
+          case Id_apply:       arity=2; s="apply";       break;
+          case Id_call:        arity=1; s="call";        break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(FUNCTION_TAG, id, s, arity);
+    }
+
+    static boolean isApply(IdFunctionObject f) {
+        return f.hasTag(FUNCTION_TAG) && f.methodId() == Id_apply;
+    }
+    
+    static boolean isApplyOrCall(IdFunctionObject f) {
+        if(f.hasTag(FUNCTION_TAG)) {
+            switch(f.methodId()) {
+                case Id_apply:
+                case Id_call:
+                    return true;
+            }
+        }
+        return false;
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(FUNCTION_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case Id_constructor:
+            return jsConstructor(cx, scope, args);
+
+          case Id_toString: {
+            BaseFunction realf = realFunction(thisObj, f);
+            int indent = ScriptRuntime.toInt32(args, 0);
+            return realf.decompile(indent, 0);
+          }
+
+          case Id_toSource: {
+            BaseFunction realf = realFunction(thisObj, f);
+            int indent = 0;
+            int flags = Decompiler.TO_SOURCE_FLAG;
+            if (args.length != 0) {
+                indent = ScriptRuntime.toInt32(args[0]);
+                if (indent >= 0) {
+                    flags = 0;
+                } else {
+                    indent = 0;
+                }
+            }
+            return realf.decompile(indent, flags);
+          }
+
+          case Id_apply:
+          case Id_call:
+            return ScriptRuntime.applyOrCall(id == Id_apply,
+                                             cx, scope, thisObj, args);
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+    private BaseFunction realFunction(Scriptable thisObj, IdFunctionObject f)
+    {
+        Object x = thisObj.getDefaultValue(ScriptRuntime.FunctionClass);
+        if (x instanceof BaseFunction) {
+            return (BaseFunction)x;
+        }
+        throw ScriptRuntime.typeError1("msg.incompat.call",
+                                       f.getFunctionName());
+    }
+
+    /**
+     * Make value as DontEnum, DontDelete, ReadOnly
+     * prototype property of this Function object
+     */
+    public void setImmunePrototypeProperty(Object value)
+    {
+        if ((prototypePropertyAttributes & READONLY) != 0) {
+            throw new IllegalStateException();
+        }
+        prototypeProperty = (value != null) ? value : UniqueTag.NULL_VALUE;
+        prototypePropertyAttributes = DONTENUM | PERMANENT | READONLY;
+    }
+
+    protected Scriptable getClassPrototype()
+    {
+        Object protoVal = getPrototypeProperty();
+        if (protoVal instanceof Scriptable) {
+            return (Scriptable) protoVal;
+        }
+        return getClassPrototype(this, "Object");
+    }
+
+    /**
+     * Should be overridden.
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        return Undefined.instance;
+    }
+
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        Scriptable result = createObject(cx, scope);
+        if (result != null) {
+            Object val = call(cx, scope, result, args);
+            if (val instanceof Scriptable) {
+                result = (Scriptable)val;
+            }
+        } else {
+            Object val = call(cx, scope, null, args);
+            if (!(val instanceof Scriptable)) {
+                // It is program error not to return Scriptable from
+                // the call method if createObject returns null.
+                throw new IllegalStateException(
+                    "Bad implementaion of call as constructor, name="
+                    +getFunctionName()+" in "+getClass().getName());
+            }
+            result = (Scriptable)val;
+            if (result.getPrototype() == null) {
+                result.setPrototype(getClassPrototype());
+            }
+            if (result.getParentScope() == null) {
+                Scriptable parent = getParentScope();
+                if (result != parent) {
+                    result.setParentScope(parent);
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Creates new script object.
+     * The default implementation of {@link #construct} uses the method to
+     * to get the value for <tt>thisObj</tt> argument when invoking
+     * {@link #call}.
+     * The methos is allowed to return <tt>null</tt> to indicate that
+     * {@link #call} will create a new object itself. In this case
+     * {@link #construct} will set scope and prototype on the result
+     * {@link #call} unless they are already set.
+     */
+    public Scriptable createObject(Context cx, Scriptable scope)
+    {
+        Scriptable newInstance = new NativeObject();
+        newInstance.setPrototype(getClassPrototype());
+        newInstance.setParentScope(getParentScope());
+        return newInstance;
+    }
+
+    /**
+     * Decompile the source information associated with this js
+     * function/script back into a string.
+     *
+     * @param indent How much to indent the decompiled result.
+     *
+     * @param flags Flags specifying format of decompilation output.
+     */
+    String decompile(int indent, int flags)
+    {
+        StringBuffer sb = new StringBuffer();
+        boolean justbody = (0 != (flags & Decompiler.ONLY_BODY_FLAG));
+        if (!justbody) {
+            sb.append("function ");
+            sb.append(getFunctionName());
+            sb.append("() {\n\t");
+        }
+        sb.append("[native code, arity=");
+        sb.append(getArity());
+        sb.append("]\n");
+        if (!justbody) {
+            sb.append("}\n");
+        }
+        return sb.toString();
+    }
+
+    public int getArity() { return 0; }
+
+    public int getLength() { return 0; }
+
+    public String getFunctionName()
+    {
+        return "";
+    }
+
+    final Object getPrototypeProperty() {
+        Object result = prototypeProperty;
+        if (result == null) {
+            synchronized (this) {
+                result = prototypeProperty;
+                if (result == null) {
+                    setupDefaultPrototype();
+                    result = prototypeProperty;
+                }
+            }
+        }
+        else if (result == UniqueTag.NULL_VALUE) { result = null; }
+        return result;
+    }
+
+    private void setupDefaultPrototype()
+    {
+        NativeObject obj = new NativeObject();
+        final int attr = ScriptableObject.DONTENUM;
+        obj.defineProperty("constructor", this, attr);
+        // put the prototype property into the object now, then in the
+        // wacky case of a user defining a function Object(), we don't
+        // get an infinite loop trying to find the prototype.
+        prototypeProperty = obj;
+        Scriptable proto = getObjectPrototype(this);
+        if (proto != obj) {
+            // not the one we just made, it must remain grounded
+            obj.setPrototype(proto);
+        }
+    }
+
+    private Object getArguments()
+    {
+      // <Function name>.arguments is deprecated, so we use a slow
+      // way of getting it that doesn't add to the invocation cost.
+      // TODO: add warning, error based on version
+      Object value = defaultGet("arguments");
+      if (value != NOT_FOUND) {
+          // Should after changing <Function name>.arguments its
+          // activation still be available during Function call?
+          // This code assumes it should not:
+          // defaultGet("arguments") != NOT_FOUND
+          // means assigned arguments
+          return value;
+      }
+      Context cx = Context.getContext();
+      NativeCall activation = ScriptRuntime.findFunctionActivation(cx, this);
+      return (activation == null)
+             ? null
+             : activation.get("arguments", activation);
+    }
+
+    private static Object jsConstructor(Context cx, Scriptable scope,
+                                        Object[] args)
+    {
+        int arglen = args.length;
+        StringBuffer sourceBuf = new StringBuffer();
+
+        sourceBuf.append("function ");
+        /* version != 1.2 Function constructor behavior -
+         * print 'anonymous' as the function name if the
+         * version (under which the function was compiled) is
+         * less than 1.2... or if it's greater than 1.2, because
+         * we need to be closer to ECMA.
+         */
+        if (cx.getLanguageVersion() != Context.VERSION_1_2) {
+            sourceBuf.append("anonymous");
+        }
+        sourceBuf.append('(');
+
+        // Append arguments as coma separated strings
+        for (int i = 0; i < arglen - 1; i++) {
+            if (i > 0) {
+                sourceBuf.append(',');
+            }
+            sourceBuf.append(ScriptRuntime.toString(args[i]));
+        }
+        sourceBuf.append(") {");
+        if (arglen != 0) {
+            // append function body
+            String funBody = ScriptRuntime.toString(args[arglen - 1]);
+            sourceBuf.append(funBody);
+        }
+        sourceBuf.append('}');
+        String source = sourceBuf.toString();
+
+        int[] linep = new int[1];
+        String filename = Context.getSourcePositionFromStack(linep);
+        if (filename == null) {
+            filename = "<eval'ed string>";
+            linep[0] = 1;
+        }
+
+        String sourceURI = ScriptRuntime.
+            makeUrlForGeneratedScript(false, filename, linep[0]);
+
+        Scriptable global = ScriptableObject.getTopLevelScope(scope);
+
+        ErrorReporter reporter;
+        reporter = DefaultErrorReporter.forEval(cx.getErrorReporter());
+
+        Evaluator evaluator = Context.createInterpreter();
+        if (evaluator == null) {
+            throw new JavaScriptException("Interpreter not present",
+                    filename, linep[0]);            
+        }
+
+        // Compile with explicit interpreter instance to force interpreter
+        // mode.
+        return cx.compileFunction(global, source, evaluator, reporter,
+                                  sourceURI, 1, null);
+    }
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #string_id_map#
+// #generated# Last update: 2007-05-09 08:15:15 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 4: X="call";id=Id_call; break L;
+            case 5: X="apply";id=Id_apply; break L;
+            case 8: c=s.charAt(3);
+                if (c=='o') { X="toSource";id=Id_toSource; }
+                else if (c=='t') { X="toString";id=Id_toString; }
+                break L;
+            case 11: X="constructor";id=Id_constructor; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor    = 1,
+        Id_toString       = 2,
+        Id_toSource       = 3,
+        Id_apply          = 4,
+        Id_call           = 5,
+
+        MAX_PROTOTYPE_ID  = 5;
+
+// #/string_id_map#
+
+    private Object prototypeProperty;
+    // For function object instances, attribute is PERMANENT; see ECMA 15.3.5.2
+    private int prototypePropertyAttributes = PERMANENT;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Callable.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Callable.java
new file mode 100644
index 0000000..03e0fce
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Callable.java
@@ -0,0 +1,59 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * Generic notion of callable object that can execute some script-related code
+ * upon request with specified values for script scope and this objects.
+ */
+public interface Callable
+{
+    /**
+     * Perform the call.
+     *
+     * @param cx the current Context for this thread
+     * @param scope the scope to use to resolve properties.
+     * @param thisObj the JavaScript <code>this</code> object
+     * @param args the array of arguments
+     * @return the result of the call
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args);
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ClassCache.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ClassCache.java
new file mode 100644
index 0000000..9047278
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ClassCache.java
@@ -0,0 +1,220 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.Map;
+import java.util.HashMap;
+
+/**
+ * Cache of generated classes and data structures to access Java runtime
+ * from JavaScript.
+ *
+ * @author Igor Bukanov
+ *
+ * @since Rhino 1.5 Release 5
+ */
+public class ClassCache
+{
+    private static final Object AKEY = new Object();
+    private volatile boolean cachingIsEnabled = true;
+    private HashMap<Class<?>,JavaMembers> classTable
+        = new HashMap<Class<?>,JavaMembers>();
+    private HashMap<Class<?>,JavaMembers> javaAdapterGeneratedClasses
+        = new HashMap<Class<?>,JavaMembers>();
+    private HashMap<JavaAdapter.JavaAdapterSignature,Class<?>> classAdapterCache
+        = new HashMap<JavaAdapter.JavaAdapterSignature,Class<?>>();
+    private HashMap<Class<?>,Object> interfaceAdapterCache;
+    private int generatedClassSerial;
+
+    /**
+     * Search for ClassCache object in the given scope.
+     * The method first calls
+     * {@link ScriptableObject#getTopLevelScope(Scriptable scope)}
+     * to get the top most scope and then tries to locate associated
+     * ClassCache object in the prototype chain of the top scope.
+     *
+     * @param scope scope to search for ClassCache object.
+     * @return previously associated ClassCache object or a new instance of
+     *         ClassCache if no ClassCache object was found.
+     *
+     * @see #associate(ScriptableObject topScope)
+     */
+    public static ClassCache get(Scriptable scope)
+    {
+        ClassCache cache = (ClassCache)
+                ScriptableObject.getTopScopeValue(scope, AKEY);
+        if (cache == null) {
+            throw new RuntimeException("Can't find top level scope for " +
+                    "ClassCache.get");
+        }
+        return cache;
+    }
+
+    /**
+     * Associate ClassCache object with the given top-level scope.
+     * The ClassCache object can only be associated with the given scope once.
+     *
+     * @param topScope scope to associate this ClassCache object with.
+     * @return true if no previous ClassCache objects were embedded into
+     *         the scope and this ClassCache were successfully associated
+     *         or false otherwise.
+     *
+     * @see #get(Scriptable scope)
+     */
+    public boolean associate(ScriptableObject topScope)
+    {
+        if (topScope.getParentScope() != null) {
+            // Can only associate cache with top level scope
+            throw new IllegalArgumentException();
+        }
+        if (this == topScope.associateValue(AKEY, this)) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Empty caches of generated Java classes and Java reflection information.
+     */
+    public synchronized void clearCaches()
+    {
+        classTable.clear();
+        javaAdapterGeneratedClasses.clear();
+        classAdapterCache.clear();
+        interfaceAdapterCache = null;
+    }
+
+    /**
+     * Check if generated Java classes and Java reflection information
+     * is cached.
+     */
+    public final boolean isCachingEnabled()
+    {
+        return cachingIsEnabled;
+    }
+
+     /**
+     * Set whether to cache some values.
+     * <p>
+     * By default, the engine will cache the results of
+     * <tt>Class.getMethods()</tt> and similar calls.
+     * This can speed execution dramatically, but increases the memory
+     * footprint. Also, with caching enabled, references may be held to
+     * objects past the lifetime of any real usage.
+     * <p>
+     * If caching is enabled and this method is called with a
+     * <code>false</code> argument, the caches will be emptied.
+     * <p>
+     * Caching is enabled by default.
+     *
+     * @param enabled if true, caching is enabled
+     *
+     * @see #clearCaches()
+     */
+    public synchronized void setCachingEnabled(boolean enabled)
+    {
+        if (enabled == cachingIsEnabled)
+            return;
+        if (!enabled)
+            clearCaches();
+        cachingIsEnabled = enabled;
+    }
+    
+    /**
+     * @return a map from classes to associated JavaMembers objects
+     */
+    Map<Class<?>,JavaMembers> getClassCacheMap() {
+        return classTable;
+    }
+    
+    Map<JavaAdapter.JavaAdapterSignature,Class<?>> getInterfaceAdapterCacheMap()
+    {
+        return classAdapterCache;
+    }
+    
+    /**
+     * @deprecated
+     * The method always returns false.
+     * @see #setInvokerOptimizationEnabled(boolean enabled)
+     */
+    public boolean isInvokerOptimizationEnabled()
+    {
+        return false;
+    }
+
+    /**
+     * @deprecated
+     * The method does nothing.
+     * Invoker optimization is no longer used by Rhino.
+     * On modern JDK like 1.4 or 1.5 the disadvantages of the optimization
+     * like increased memory usage or longer initialization time overweight
+     * small speed increase that can be gained using generated proxy class
+     * to replace reflection.
+     */
+    public synchronized void setInvokerOptimizationEnabled(boolean enabled)
+    {
+    }
+
+    /**
+     * Internal engine method to return serial number for generated classes
+     * to ensure name uniqueness.
+     */
+    public final synchronized int newClassSerialNumber()
+    {
+        return ++generatedClassSerial;
+    }
+
+    Object getInterfaceAdapter(Class<?> cl)
+    {
+        return interfaceAdapterCache == null 
+                    ? null 
+                    : interfaceAdapterCache.get(cl);
+    }
+
+    synchronized void cacheInterfaceAdapter(Class<?> cl, Object iadapter)
+    {
+        if (cachingIsEnabled) {
+            if (interfaceAdapterCache == null) {
+                interfaceAdapterCache = new HashMap<Class<?>,Object>();
+            }
+            interfaceAdapterCache.put(cl, iadapter);
+        }
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ClassShutter.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ClassShutter.java
new file mode 100644
index 0000000..d5f4cd6
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ClassShutter.java
@@ -0,0 +1,89 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+Embeddings that wish to filter Java classes that are visible to scripts
+through the LiveConnect, should implement this interface.
+
+@see Context#setClassShutter(ClassShutter)
+@since 1.5 Release 4
+@author Norris Boyd
+*/
+
+ public interface ClassShutter {
+
+    /**
+     * Return true iff the Java class with the given name should be exposed
+     * to scripts.
+     * <p>
+     * An embedding may filter which Java classes are exposed through
+     * LiveConnect to JavaScript scripts.
+     * <p>
+     * Due to the fact that there is no package reflection in Java,
+     * this method will also be called with package names. There
+     * is no way for Rhino to tell if "Packages.a.b" is a package name
+     * or a class that doesn't exist. What Rhino does is attempt
+     * to load each segment of "Packages.a.b.c": It first attempts to
+     * load class "a", then attempts to load class "a.b", then
+     * finally attempts to load class "a.b.c". On a Rhino installation
+     * without any ClassShutter set, and without any of the
+     * above classes, the expression "Packages.a.b.c" will result in
+     * a [JavaPackage a.b.c] and not an error.
+     * <p>
+     * With ClassShutter supplied, Rhino will first call
+     * visibleToScripts before attempting to look up the class name. If
+     * visibleToScripts returns false, the class name lookup is not
+     * performed and subsequent Rhino execution assumes the class is
+     * not present. So for "java.lang.System.out.println" the lookup
+     * of "java.lang.System" is skipped and thus Rhino assumes that
+     * "java.lang.System" doesn't exist. So then for "java.lang.System.out",
+     * Rhino attempts to load the class "java.lang.System.out" because
+     * it assumes that "java.lang.System" is a package name.
+     * <p>
+     * @param fullClassName the full name of the class (including the package
+     *                      name, with '.' as a delimiter). For example the
+     *                      standard string class is "java.lang.String"
+     * @return whether or not to reveal this class to scripts
+     */
+    public boolean visibleToScripts(String fullClassName);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/CompilerEnvirons.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/CompilerEnvirons.java
new file mode 100644
index 0000000..645d098
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/CompilerEnvirons.java
@@ -0,0 +1,233 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *   Bob Jervis
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.Hashtable;
+
+public class CompilerEnvirons
+{
+    public CompilerEnvirons()
+    {
+        errorReporter = DefaultErrorReporter.instance;
+        languageVersion = Context.VERSION_DEFAULT;
+        generateDebugInfo = true;
+        useDynamicScope = false;
+        reservedKeywordAsIdentifier = false;
+        allowMemberExprAsFunctionName = false;
+        xmlAvailable = true;
+        optimizationLevel = 0;
+        generatingSource = true;
+        strictMode = false;
+        warningAsError = false;
+        generateObserverCount = false;
+    }
+
+    public void initFromContext(Context cx)
+    {
+        setErrorReporter(cx.getErrorReporter());
+        this.languageVersion = cx.getLanguageVersion();
+        useDynamicScope = cx.compileFunctionsWithDynamicScopeFlag;
+        generateDebugInfo = (!cx.isGeneratingDebugChanged()
+                             || cx.isGeneratingDebug());
+        reservedKeywordAsIdentifier
+            = cx.hasFeature(Context.FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER);
+        allowMemberExprAsFunctionName
+            = cx.hasFeature(Context.FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME);
+        strictMode
+            = cx.hasFeature(Context.FEATURE_STRICT_MODE);
+        warningAsError = cx.hasFeature(Context.FEATURE_WARNING_AS_ERROR);
+        xmlAvailable
+            = cx.hasFeature(Context.FEATURE_E4X);
+
+        optimizationLevel = cx.getOptimizationLevel();
+
+        generatingSource = cx.isGeneratingSource();
+        activationNames = cx.activationNames;
+        
+        // Observer code generation in compiled code :
+        generateObserverCount = cx.generateObserverCount;
+    }
+
+    public final ErrorReporter getErrorReporter()
+    {
+        return errorReporter;
+    }
+
+    public void setErrorReporter(ErrorReporter errorReporter)
+    {
+        if (errorReporter == null) throw new IllegalArgumentException();
+        this.errorReporter = errorReporter;
+    }
+
+    public final int getLanguageVersion()
+    {
+        return languageVersion;
+    }
+
+    public void setLanguageVersion(int languageVersion)
+    {
+        Context.checkLanguageVersion(languageVersion);
+        this.languageVersion = languageVersion;
+    }
+
+    public final boolean isGenerateDebugInfo()
+    {
+        return generateDebugInfo;
+    }
+
+    public void setGenerateDebugInfo(boolean flag)
+    {
+        this.generateDebugInfo = flag;
+    }
+
+    public final boolean isUseDynamicScope()
+    {
+        return useDynamicScope;
+    }
+
+    public final boolean isReservedKeywordAsIdentifier()
+    {
+        return reservedKeywordAsIdentifier;
+    }
+
+    public void setReservedKeywordAsIdentifier(boolean flag)
+    {
+        reservedKeywordAsIdentifier = flag;
+    }
+
+    public final boolean isAllowMemberExprAsFunctionName()
+    {
+        return allowMemberExprAsFunctionName;
+    }
+
+    public void setAllowMemberExprAsFunctionName(boolean flag)
+    {
+        allowMemberExprAsFunctionName = flag;
+    }
+
+    public final boolean isXmlAvailable()
+    {
+        return xmlAvailable;
+    }
+
+    public void setXmlAvailable(boolean flag)
+    {
+        xmlAvailable = flag;
+    }
+
+    public final int getOptimizationLevel()
+    {
+        return optimizationLevel;
+    }
+
+    public void setOptimizationLevel(int level)
+    {
+        Context.checkOptimizationLevel(level);
+        this.optimizationLevel = level;
+    }
+
+    public final boolean isGeneratingSource()
+    {
+        return generatingSource;
+    }
+
+    public final boolean isStrictMode()
+    {
+        return strictMode;
+    }
+
+    public final boolean reportWarningAsError()
+    {
+        return warningAsError;
+    }
+
+    /**
+     * Specify whether or not source information should be generated.
+     * <p>
+     * Without source information, evaluating the "toString" method
+     * on JavaScript functions produces only "[native code]" for
+     * the body of the function.
+     * Note that code generated without source is not fully ECMA
+     * conformant.
+     */
+    public void setGeneratingSource(boolean generatingSource)
+    {
+        this.generatingSource = generatingSource;
+    }
+
+    /**
+     * @return true iff code will be generated with callbacks to enable
+     * instruction thresholds
+     */
+    public boolean isGenerateObserverCount() {
+    	return generateObserverCount;
+    }
+
+   /**
+     * Turn on or off generation of code with callbacks to
+     * track the count of executed instructions.
+     * Currently only affects JVM byte code generation: this slows down the
+     * generated code, but code generated without the callbacks will not
+     * be counted toward instruction thresholds. Rhino's interpretive
+     * mode does instruction counting without inserting callbacks, so
+     * there is no requirement to compile code differently.
+     * @param generateObserverCount if true, generated code will contain
+     * calls to accumulate an estimate of the instructions executed.
+     */
+    public void setGenerateObserverCount(boolean generateObserverCount) {
+        this.generateObserverCount = generateObserverCount;
+    }
+
+    private ErrorReporter errorReporter;
+
+    private int languageVersion;
+    private boolean generateDebugInfo;
+    private boolean useDynamicScope;
+    private boolean reservedKeywordAsIdentifier;
+    private boolean allowMemberExprAsFunctionName;
+    private boolean xmlAvailable;
+    private int optimizationLevel;
+    private boolean generatingSource;
+    private boolean strictMode;
+    private boolean warningAsError;
+    private boolean generateObserverCount;
+    Hashtable activationNames;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ConstProperties.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ConstProperties.java
new file mode 100644
index 0000000..860db79
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ConstProperties.java
@@ -0,0 +1,109 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Bob Jervis
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+public interface ConstProperties {
+    /**
+     * Sets a named const property in this object.
+     * <p>
+     * The property is specified by a string name
+     * as defined for <code>Scriptable.get</code>.
+     * <p>
+     * The possible values that may be passed in are as defined for
+     * <code>Scriptable.get</code>. A class that implements this method may choose
+     * to ignore calls to set certain properties, in which case those
+     * properties are effectively read-only.<p>
+     * For properties defined in a prototype chain,
+     * use <code>putProperty</code> in ScriptableObject. <p>
+     * Note that if a property <i>a</i> is defined in the prototype <i>p</i>
+     * of an object <i>o</i>, then evaluating <code>o.a = 23</code> will cause
+     * <code>set</code> to be called on the prototype <i>p</i> with
+     * <i>o</i> as the  <i>start</i> parameter.
+     * To preserve JavaScript semantics, it is the Scriptable
+     * object's responsibility to modify <i>o</i>. <p>
+     * This design allows properties to be defined in prototypes and implemented
+     * in terms of getters and setters of Java values without consuming slots
+     * in each instance.<p>
+     * <p>
+     * The values that may be set are limited to the following:
+     * <UL>
+     * <LI>java.lang.Boolean objects</LI>
+     * <LI>java.lang.String objects</LI>
+     * <LI>java.lang.Number objects</LI>
+     * <LI>org.mozilla.javascript.Scriptable objects</LI>
+     * <LI>null</LI>
+     * <LI>The value returned by Context.getUndefinedValue()</LI>
+     * </UL><p>
+     * Arbitrary Java objects may be wrapped in a Scriptable by first calling
+     * <code>Context.toObject</code>. This allows the property of a JavaScript
+     * object to contain an arbitrary Java object as a value.<p>
+     * Note that <code>has</code> will be called by the runtime first before
+     * <code>set</code> is called to determine in which object the
+     * property is defined.
+     * Note that this method is not expected to traverse the prototype chain,
+     * which is different from the ECMA [[Put]] operation.
+     * @param name the name of the property
+     * @param start the object whose property is being set
+     * @param value value to set the property to
+     * @see org.mozilla.javascript.Scriptable#has(String, Scriptable)
+     * @see org.mozilla.javascript.Scriptable#get(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#putProperty(Scriptable, String, Object)
+     * @see org.mozilla.javascript.Context#toObject(Object, Scriptable)
+     */
+    public void putConst(String name, Scriptable start, Object value);
+
+    /**
+     * Reserves a definition spot for a const.  This will set up a definition
+     * of the const property, but set its value to undefined.  The semantics of
+     * the start parameter is the same as for putConst.
+     * @param name The name of the property.
+     * @param start The object whose property is being reserved.
+     */
+    public void defineConst(String name, Scriptable start);
+
+    /**
+     * Returns true if the named property is defined as a const on this object.
+     * @param name
+     * @return true if the named property is defined as a const, false
+     * otherwise.
+     */
+    public boolean isConst(String name);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Context.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Context.java
new file mode 100644
index 0000000..0833883
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Context.java
@@ -0,0 +1,2526 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *    Bob Jervis
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.io.CharArrayWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.Reader;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Hashtable;
+import java.util.Locale;
+
+import org.mozilla.javascript.debug.DebuggableScript;
+import org.mozilla.javascript.debug.Debugger;
+import org.mozilla.javascript.xml.XMLLib;
+
+/**
+ * This class represents the runtime context of an executing script.
+ *
+ * Before executing a script, an instance of Context must be created
+ * and associated with the thread that will be executing the script.
+ * The Context will be used to store information about the executing
+ * of the script such as the call stack. Contexts are associated with
+ * the current thread  using the {@link #call(ContextAction)}
+ * or {@link #enter()} methods.<p>
+ *
+ * Different forms of script execution are supported. Scripts may be
+ * evaluated from the source directly, or first compiled and then later
+ * executed. Interactive execution is also supported.<p>
+ *
+ * Some aspects of script execution, such as type conversions and
+ * object creation, may be accessed directly through methods of
+ * Context.
+ *
+ * @see Scriptable
+ * @author Norris Boyd
+ * @author Brendan Eich
+ */
+
+public class Context
+{
+    /**
+     * Language versions.
+     *
+     * All integral values are reserved for future version numbers.
+     */
+
+    /**
+     * The unknown version.
+     */
+    public static final int VERSION_UNKNOWN =   -1;
+
+    /**
+     * The default version.
+     */
+    public static final int VERSION_DEFAULT =    0;
+
+    /**
+     * JavaScript 1.0
+     */
+    public static final int VERSION_1_0 =      100;
+
+    /**
+     * JavaScript 1.1
+     */
+    public static final int VERSION_1_1 =      110;
+
+    /**
+     * JavaScript 1.2
+     */
+    public static final int VERSION_1_2 =      120;
+
+    /**
+     * JavaScript 1.3
+     */
+    public static final int VERSION_1_3 =      130;
+
+    /**
+     * JavaScript 1.4
+     */
+    public static final int VERSION_1_4 =      140;
+
+    /**
+     * JavaScript 1.5
+     */
+    public static final int VERSION_1_5 =      150;
+
+    /**
+     * JavaScript 1.6
+     */
+    public static final int VERSION_1_6 =      160;
+
+    /**
+     * JavaScript 1.7
+     */
+    public static final int VERSION_1_7 =      170;
+
+    /**
+     * Controls behaviour of <tt>Date.prototype.getYear()</tt>.
+     * If <tt>hasFeature(FEATURE_NON_ECMA_GET_YEAR)</tt> returns true,
+     * Date.prototype.getYear subtructs 1900 only if 1900 <= date < 2000.
+     * The default behavior of {@link #hasFeature(int)} is always to subtruct
+     * 1900 as rquired by ECMAScript B.2.4.
+     */
+    public static final int FEATURE_NON_ECMA_GET_YEAR = 1;
+
+    /**
+     * Control if member expression as function name extension is available.
+     * If <tt>hasFeature(FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME)</tt> returns
+     * true, allow <tt>function memberExpression(args) { body }</tt> to be
+     * syntax sugar for <tt>memberExpression = function(args) { body }</tt>,
+     * when memberExpression is not a simple identifier.
+     * See ECMAScript-262, section 11.2 for definition of memberExpression.
+     * By default {@link #hasFeature(int)} returns false.
+     */
+    public static final int FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME = 2;
+
+    /**
+     * Control if reserved keywords are treated as identifiers.
+     * If <tt>hasFeature(RESERVED_KEYWORD_AS_IDENTIFIER)</tt> returns true,
+     * treat future reserved keyword (see  Ecma-262, section 7.5.3) as ordinary
+     * identifiers but warn about this usage.
+     *
+     * By default {@link #hasFeature(int)} returns false.
+     */
+    public static final int FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER = 3;
+
+    /**
+     * Control if <tt>toString()</tt> should returns the same result
+     * as  <tt>toSource()</tt> when applied to objects and arrays.
+     * If <tt>hasFeature(FEATURE_TO_STRING_AS_SOURCE)</tt> returns true,
+     * calling <tt>toString()</tt> on JS objects gives the same result as
+     * calling <tt>toSource()</tt>. That is it returns JS source with code
+     * to create an object with all enumeratable fields of the original object
+     * instead of printing <tt>[object <i>result of
+     * {@link Scriptable#getClassName()}</i>]</tt>.
+     * <p>
+     * By default {@link #hasFeature(int)} returns true only if
+     * the current JS version is set to {@link #VERSION_1_2}.
+     */
+    public static final int FEATURE_TO_STRING_AS_SOURCE = 4;
+
+    /**
+     * Control if properties <tt>__proto__</tt> and <tt>__parent__</tt>
+     * are treated specially.
+     * If <tt>hasFeature(FEATURE_PARENT_PROTO_PROPERTIES)</tt> returns true,
+     * treat <tt>__parent__</tt> and <tt>__proto__</tt> as special properties.
+     * <p>
+     * The properties allow to query and set scope and prototype chains for the
+     * objects. The special meaning of the properties is available
+     * only when they are used as the right hand side of the dot operator.
+     * For example, while <tt>x.__proto__ = y</tt> changes the prototype
+     * chain of the object <tt>x</tt> to point to <tt>y</tt>,
+     * <tt>x["__proto__"] = y</tt> simply assigns a new value to the property
+     * <tt>__proto__</tt> in <tt>x</tt> even when the feature is on.
+     *
+     * By default {@link #hasFeature(int)} returns true.
+     */
+    public static final int FEATURE_PARENT_PROTO_PROPERTIES = 5;
+
+	/**
+	 * @deprecated In previous releases, this name was given to
+	 * FEATURE_PARENT_PROTO_PROPERTIES.
+	 */
+    public static final int FEATURE_PARENT_PROTO_PROPRTIES = 5;
+	
+    /**
+     * Control if support for E4X(ECMAScript for XML) extension is available.
+     * If hasFeature(FEATURE_E4X) returns true, the XML syntax is available.
+     * <p>
+     * By default {@link #hasFeature(int)} returns true if
+     * the current JS version is set to {@link #VERSION_DEFAULT}
+     * or is at least {@link #VERSION_1_6}.
+     * @since 1.6 Release 1
+     */
+    public static final int FEATURE_E4X = 6;
+
+    /**
+     * Control if dynamic scope should be used for name access.
+     * If hasFeature(FEATURE_DYNAMIC_SCOPE) returns true, then the name lookup
+     * during name resolution will use the top scope of the script or function
+     * which is at the top of JS execution stack instead of the top scope of the
+     * script or function from the current stack frame if the top scope of
+     * the top stack frame contains the top scope of the current stack frame
+     * on its prototype chain.
+     * <p>
+     * This is useful to define shared scope containing functions that can
+     * be called from scripts and functions using private scopes.
+     * <p>
+     * By default {@link #hasFeature(int)} returns false.
+     * @since 1.6 Release 1
+     */
+    public static final int FEATURE_DYNAMIC_SCOPE = 7;
+
+    /**
+     * Control if strict variable mode is enabled.
+     * When the feature is on Rhino reports runtime errors if assignment
+     * to a global variable that does not exist is executed. When the feature
+     * is off such assignments creates new variable in the global scope  as
+     * required by ECMA 262.
+     * <p>
+     * By default {@link #hasFeature(int)} returns false.
+     * @since 1.6 Release 1
+     */
+    public static final int FEATURE_STRICT_VARS = 8;
+
+    /**
+     * Control if strict eval mode is enabled.
+     * When the feature is on Rhino reports runtime errors if non-string
+     * argument is passed to the eval function. When the feature is off
+     * eval simply return non-string argument as is without performing any
+     * evaluation as required by ECMA 262.
+     * <p>
+     * By default {@link #hasFeature(int)} returns false.
+     * @since 1.6 Release 1
+     */
+    public static final int FEATURE_STRICT_EVAL = 9;
+
+    /**
+     * When the feature is on Rhino will add a "fileName" and "lineNumber"
+     * properties to Error objects automatically. When the feature is off, you
+     * have to explicitly pass them as the second and third argument to the
+     * Error constructor. Note that neither behaviour is fully ECMA 262 
+     * compliant (as 262 doesn't specify a three-arg constructor), but keeping 
+     * the feature off results in Error objects that don't have
+     * additional non-ECMA properties when constructed using the ECMA-defined
+     * single-arg constructor and is thus desirable if a stricter ECMA 
+     * compliance is desired, specifically adherence to the point 15.11.5. of
+     * the standard.
+     * <p>
+     * By default {@link #hasFeature(int)} returns false.
+     * @since 1.6 Release 6
+     */
+    public static final int FEATURE_LOCATION_INFORMATION_IN_ERROR = 10;
+
+    /**
+     * Controls whether JS 1.5 'strict mode' is enabled.
+     * When the feature is on, Rhino reports more than a dozen different
+     * warnings.  When the feature is off, these warnings are not generated.
+     * FEATURE_STRICT_MODE implies FEATURE_STRICT_VARS and FEATURE_STRICT_EVAL.
+     * <p>
+     * By default {@link #hasFeature(int)} returns false.
+     * @since 1.6 Release 6
+     */
+    public static final int FEATURE_STRICT_MODE = 11;
+
+    /**
+     * Controls whether a warning should be treated as an error.
+     * @since 1.6 Release 6
+     */
+    public static final int FEATURE_WARNING_AS_ERROR = 12;
+
+    /**
+     * Enables enhanced access to Java. 
+     * Specifically, controls whether private and protected members can be
+     * accessed, and whether scripts can catch all Java exceptions.
+     * <p>
+     * Note that this feature should only be enabled for trusted scripts.
+     * <p>
+     * By default {@link #hasFeature(int)} returns false.
+     * @since 1.7 Release 1
+     */
+    public static final int FEATURE_ENHANCED_JAVA_ACCESS = 13;
+
+
+    public static final String languageVersionProperty = "language version";
+    public static final String errorReporterProperty   = "error reporter";
+
+    /**
+     * Convenient value to use as zero-length array of objects.
+     */
+    public static final Object[] emptyArgs = ScriptRuntime.emptyArgs;
+
+    /**
+     * Create a new Context.
+     *
+     * Note that the Context must be associated with a thread before
+     * it can be used to execute a script.
+     * @deprecated use {@link ContextFactory#enter()} or 
+     * {@link ContextFactory#call(ContextAction)} instead.
+     */
+    public Context()
+    {
+        this(ContextFactory.getGlobal());
+    }
+    
+    Context(ContextFactory factory)
+    {
+        assert factory != null;
+        this.factory = factory;
+        setLanguageVersion(VERSION_DEFAULT);
+        optimizationLevel = codegenClass != null ? 0 : -1;
+        maximumInterpreterStackDepth = Integer.MAX_VALUE;
+    }
+
+    /**
+     * Get the current Context.
+     *
+     * The current Context is per-thread; this method looks up
+     * the Context associated with the current thread. <p>
+     *
+     * @return the Context associated with the current thread, or
+     *         null if no context is associated with the current
+     *         thread.
+     * @see ContextFactory#enterContext()
+     * @see ContextFactory#call(ContextAction)
+     */
+    public static Context getCurrentContext()
+    {
+        Object helper = VMBridge.instance.getThreadContextHelper();
+        return VMBridge.instance.getContext(helper);
+    }
+
+    /**
+     * Same as calling {@link ContextFactory#enterContext()} on the global
+     * ContextFactory instance.
+     * @deprecated use {@link ContextFactory#enter()} or 
+     * {@link ContextFactory#call(ContextAction)} instead as this method relies
+     * on usage of a static singleton "global" ContextFactory.
+     * @return a Context associated with the current thread
+     * @see #getCurrentContext()
+     * @see #exit()
+     * @see #call(ContextAction)
+     */
+    public static Context enter()
+    {
+        return enter(null);
+    }
+
+    /**
+     * Get a Context associated with the current thread, using
+     * the given Context if need be.
+     * <p>
+     * The same as <code>enter()</code> except that <code>cx</code>
+     * is associated with the current thread and returned if
+     * the current thread has no associated context and <code>cx</code>
+     * is not associated with any other thread.
+     * @param cx a Context to associate with the thread if possible
+     * @return a Context associated with the current thread
+     * @deprecated use {@link ContextFactory#enterContext(Context)} instead as 
+     * this method relies on usage of a static singleton "global" ContextFactory.
+     * @see ContextFactory#enterContext(Context)
+     * @see ContextFactory#call(ContextAction)
+     */
+    public static Context enter(Context cx)
+    {
+        return enter(cx, ContextFactory.getGlobal());
+    }
+    
+    static final Context enter(Context cx, ContextFactory factory)
+    {
+        Object helper = VMBridge.instance.getThreadContextHelper();
+        Context old = VMBridge.instance.getContext(helper);
+        if (old != null) {
+            cx = old;
+        } else {
+            if (cx == null) {
+                cx = factory.makeContext();
+                if (cx.enterCount != 0) {
+                    throw new IllegalStateException("factory.makeContext() returned Context instance already associated with some thread");
+                }
+                factory.onContextCreated(cx);
+                if (factory.isSealed() && !cx.isSealed()) {
+                    cx.seal(null);
+                }
+            } else {
+                if (cx.enterCount != 0) {
+                    throw new IllegalStateException("can not use Context instance already associated with some thread");
+                }
+            }
+            VMBridge.instance.setContext(helper, cx);
+        }
+        ++cx.enterCount;
+        return cx;
+     }
+
+    /**
+     * Exit a block of code requiring a Context.
+     *
+     * Calling <code>exit()</code> will remove the association between
+     * the current thread and a Context if the prior call to
+     * {@link ContextFactory#enterContext()} on this thread newly associated a 
+     * Context with this thread. Once the current thread no longer has an 
+     * associated Context, it cannot be used to execute JavaScript until it is 
+     * again associated with a Context.
+     * @see ContextFactory#enterContext()
+     */
+    public static void exit()
+    {
+        Object helper = VMBridge.instance.getThreadContextHelper();
+        Context cx = VMBridge.instance.getContext(helper);
+        if (cx == null) {
+            throw new IllegalStateException(
+                "Calling Context.exit without previous Context.enter");
+        }
+        if (cx.enterCount < 1) Kit.codeBug();
+        if (--cx.enterCount == 0) {
+            VMBridge.instance.setContext(helper, null);
+            cx.factory.onContextReleased(cx);
+        }
+    }
+    
+    /**
+     * Call {@link ContextAction#run(Context cx)}
+     * using the Context instance associated with the current thread.
+     * If no Context is associated with the thread, then
+     * <tt>ContextFactory.getGlobal().makeContext()</tt> will be called to
+     * construct new Context instance. The instance will be temporary
+     * associated with the thread during call to
+     * {@link ContextAction#run(Context)}.
+     * @deprecated use {@link ContextFactory#call(ContextAction)} instead as 
+     * this method relies on usage of a static singleton "global" 
+     * ContextFactory.
+     * @return The result of {@link ContextAction#run(Context)}.
+     */
+    public static Object call(ContextAction action)
+    {
+        return call(ContextFactory.getGlobal(), action);
+    }
+
+    /**
+     * Call {@link
+     * Callable#call(Context cx, Scriptable scope, Scriptable thisObj,
+     *               Object[] args)}
+     * using the Context instance associated with the current thread.
+     * If no Context is associated with the thread, then
+     * {@link ContextFactory#makeContext()} will be called to construct
+     * new Context instance. The instance will be temporary associated
+     * with the thread during call to {@link ContextAction#run(Context)}.
+     * <p>
+     * It is allowed but not advisable to use null for <tt>factory</tt> 
+     * argument in which case the global static singleton ContextFactory 
+     * instance will be used to create new context instances.
+     * @see ContextFactory#call(ContextAction)
+     */
+    public static Object call(ContextFactory factory, final Callable callable,
+                              final Scriptable scope, final Scriptable thisObj,
+                              final Object[] args)
+    {
+        if(factory == null) {
+            factory = ContextFactory.getGlobal();
+        }
+        return call(factory, new ContextAction() {
+            public Object run(Context cx) {
+                return callable.call(cx, scope, thisObj, args);
+            }
+        });
+    }
+    
+    /**
+     * The method implements {@links ContextFactory#call(ContextAction)} logic.
+     */
+    static Object call(ContextFactory factory, ContextAction action) {
+        Context cx = enter(null, factory);
+        try {
+            return action.run(cx);
+        }
+        finally {
+            exit();
+        }
+    }
+
+    /**
+     * @deprecated
+     * @see ContextFactory#addListener(ContextFactory.Listener)
+     * @see ContextFactory#getGlobal()
+     */
+    public static void addContextListener(ContextListener listener)
+    {
+        // Special workaround for the debugger
+        String DBG = "org.mozilla.javascript.tools.debugger.Main";
+        if (DBG.equals(listener.getClass().getName())) {
+            Class cl = listener.getClass();
+            Class factoryClass = Kit.classOrNull(
+                "org.mozilla.javascript.ContextFactory");
+            Class[] sig = { factoryClass };
+            Object[] args = { ContextFactory.getGlobal() };
+            try {
+                Method m = cl.getMethod("attachTo", sig);
+                m.invoke(listener, args);
+            } catch (Exception ex) {
+                RuntimeException rex = new RuntimeException();
+                Kit.initCause(rex, ex);
+                throw rex;
+            }
+            return;
+        }
+
+        ContextFactory.getGlobal().addListener(listener);
+    }
+
+    /**
+     * @deprecated
+     * @see ContextFactory#removeListener(ContextFactory.Listener)
+     * @see ContextFactory#getGlobal()
+     */
+    public static void removeContextListener(ContextListener listener)
+    {
+        ContextFactory.getGlobal().addListener(listener);
+    }
+
+    /**
+     * Return {@link ContextFactory} instance used to create this Context.
+     */
+    public final ContextFactory getFactory()
+    {
+        return factory;
+    }
+
+    /**
+     * Checks if this is a sealed Context. A sealed Context instance does not
+     * allow to modify any of its properties and will throw an exception
+     * on any such attempt.
+     * @see #seal(Object sealKey)
+     */
+    public final boolean isSealed()
+    {
+        return sealed;
+    }
+
+    /**
+     * Seal this Context object so any attempt to modify any of its properties
+     * including calling {@link #enter()} and {@link #exit()} methods will
+     * throw an exception.
+     * <p>
+     * If <tt>sealKey</tt> is not null, calling
+     * {@link #unseal(Object sealKey)} with the same key unseals
+     * the object. If <tt>sealKey</tt> is null, unsealing is no longer possible.
+     *
+     * @see #isSealed()
+     * @see #unseal(Object)
+     */
+    public final void seal(Object sealKey)
+    {
+        if (sealed) onSealedMutation();
+        sealed = true;
+        this.sealKey = sealKey;
+    }
+
+    /**
+     * Unseal previously sealed Context object.
+     * The <tt>sealKey</tt> argument should not be null and should match
+     * <tt>sealKey</tt> suplied with the last call to
+     * {@link #seal(Object)} or an exception will be thrown.
+     *
+     * @see #isSealed()
+     * @see #seal(Object sealKey)
+     */
+    public final void unseal(Object sealKey)
+    {
+        if (sealKey == null) throw new IllegalArgumentException();
+        if (this.sealKey != sealKey) throw new IllegalArgumentException();
+        if (!sealed) throw new IllegalStateException();
+        sealed = false;
+        this.sealKey = null;
+    }
+
+    static void onSealedMutation()
+    {
+        throw new IllegalStateException();
+    }
+
+    /**
+     * Get the current language version.
+     * <p>
+     * The language version number affects JavaScript semantics as detailed
+     * in the overview documentation.
+     *
+     * @return an integer that is one of VERSION_1_0, VERSION_1_1, etc.
+     */
+    public final int getLanguageVersion()
+    {
+       return version;
+    }
+
+    /**
+     * Set the language version.
+     *
+     * <p>
+     * Setting the language version will affect functions and scripts compiled
+     * subsequently. See the overview documentation for version-specific
+     * behavior.
+     *
+     * @param version the version as specified by VERSION_1_0, VERSION_1_1, etc.
+     */
+    public void setLanguageVersion(int version)
+    {
+        if (sealed) onSealedMutation();
+        checkLanguageVersion(version);
+        Object listeners = propertyListeners;
+        if (listeners != null && version != this.version) {
+            firePropertyChangeImpl(listeners, languageVersionProperty,
+                               new Integer(this.version),
+                               new Integer(version));
+        }
+        this.version = version;
+    }
+
+    public static boolean isValidLanguageVersion(int version)
+    {
+        switch (version) {
+            case VERSION_DEFAULT:
+            case VERSION_1_0:
+            case VERSION_1_1:
+            case VERSION_1_2:
+            case VERSION_1_3:
+            case VERSION_1_4:
+            case VERSION_1_5:
+            case VERSION_1_6:
+            case VERSION_1_7:
+                return true;
+        }
+        return false;
+    }
+
+    public static void checkLanguageVersion(int version)
+    {
+        if (isValidLanguageVersion(version)) {
+            return;
+        }
+        throw new IllegalArgumentException("Bad language version: "+version);
+    }
+
+    /**
+     * Get the implementation version.
+     *
+     * <p>
+     * The implementation version is of the form
+     * <pre>
+     *    "<i>name langVer</i> <code>release</code> <i>relNum date</i>"
+     * </pre>
+     * where <i>name</i> is the name of the product, <i>langVer</i> is
+     * the language version, <i>relNum</i> is the release number, and
+     * <i>date</i> is the release date for that specific
+     * release in the form "yyyy mm dd".
+     *
+     * @return a string that encodes the product, language version, release
+     *         number, and date.
+     */
+    public final String getImplementationVersion()
+    {
+        // XXX Probably it would be better to embed this directly into source
+        // with special build preprocessing but that would require some ant
+        // tweaking and then replacing token in resource files was simpler
+        if (implementationVersion == null) {
+            implementationVersion
+                = ScriptRuntime.getMessage0("implementation.version");
+        }
+        return implementationVersion;
+    }
+
+    /**
+     * Get the current error reporter.
+     *
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public final ErrorReporter getErrorReporter()
+    {
+        if (errorReporter == null) {
+            return DefaultErrorReporter.instance;
+        }
+        return errorReporter;
+    }
+
+    /**
+     * Change the current error reporter.
+     *
+     * @return the previous error reporter
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public final ErrorReporter setErrorReporter(ErrorReporter reporter)
+    {
+        if (sealed) onSealedMutation();
+        if (reporter == null) throw new IllegalArgumentException();
+        ErrorReporter old = getErrorReporter();
+        if (reporter == old) {
+            return old;
+        }
+        Object listeners = propertyListeners;
+        if (listeners != null) {
+            firePropertyChangeImpl(listeners, errorReporterProperty,
+                                   old, reporter);
+        }
+        this.errorReporter = reporter;
+        return old;
+    }
+
+    /**
+     * Get the current locale.  Returns the default locale if none has
+     * been set.
+     *
+     * @see java.util.Locale
+     */
+
+    public final Locale getLocale()
+    {
+        if (locale == null)
+            locale = Locale.getDefault();
+        return locale;
+    }
+
+    /**
+     * Set the current locale.
+     *
+     * @see java.util.Locale
+     */
+    public final Locale setLocale(Locale loc)
+    {
+        if (sealed) onSealedMutation();
+        Locale result = locale;
+        locale = loc;
+        return result;
+    }
+
+    /**
+     * Register an object to receive notifications when a bound property
+     * has changed
+     * @see java.beans.PropertyChangeEvent
+     * @see #removePropertyChangeListener(java.beans.PropertyChangeListener)
+     * @param l the listener
+     */
+    public final void addPropertyChangeListener(PropertyChangeListener l)
+    {
+        if (sealed) onSealedMutation();
+        propertyListeners = Kit.addListener(propertyListeners, l);
+    }
+
+    /**
+     * Remove an object from the list of objects registered to receive
+     * notification of changes to a bounded property
+     * @see java.beans.PropertyChangeEvent
+     * @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
+     * @param l the listener
+     */
+    public final void removePropertyChangeListener(PropertyChangeListener l)
+    {
+        if (sealed) onSealedMutation();
+        propertyListeners = Kit.removeListener(propertyListeners, l);
+    }
+
+    /**
+     * Notify any registered listeners that a bounded property has changed
+     * @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
+     * @see #removePropertyChangeListener(java.beans.PropertyChangeListener)
+     * @see java.beans.PropertyChangeListener
+     * @see java.beans.PropertyChangeEvent
+     * @param  property  the bound property
+     * @param  oldValue  the old value
+     * @param  newValue   the new value
+     */
+    final void firePropertyChange(String property, Object oldValue,
+                                  Object newValue)
+    {
+        Object listeners = propertyListeners;
+        if (listeners != null) {
+            firePropertyChangeImpl(listeners, property, oldValue, newValue);
+        }
+    }
+
+    private void firePropertyChangeImpl(Object listeners, String property,
+                                        Object oldValue, Object newValue)
+    {
+        for (int i = 0; ; ++i) {
+            Object l = Kit.getListener(listeners, i);
+            if (l == null)
+                break;
+            if (l instanceof PropertyChangeListener) {
+                PropertyChangeListener pcl = (PropertyChangeListener)l;
+                pcl.propertyChange(new PropertyChangeEvent(
+                    this, property, oldValue, newValue));
+            }
+        }
+    }
+
+    /**
+     * Report a warning using the error reporter for the current thread.
+     *
+     * @param message the warning message to report
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number
+     * @param lineSource the text of the line (may be null)
+     * @param lineOffset the offset into lineSource where problem was detected
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public static void reportWarning(String message, String sourceName,
+                                     int lineno, String lineSource,
+                                     int lineOffset)
+    {
+        Context cx = Context.getContext();
+        if (cx.hasFeature(FEATURE_WARNING_AS_ERROR))
+            reportError(message, sourceName, lineno, lineSource, lineOffset);
+        else
+            cx.getErrorReporter().warning(message, sourceName, lineno,
+                                          lineSource, lineOffset);
+    }
+
+    /**
+     * Report a warning using the error reporter for the current thread.
+     *
+     * @param message the warning message to report
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public static void reportWarning(String message)
+    {
+        int[] linep = { 0 };
+        String filename = getSourcePositionFromStack(linep);
+        Context.reportWarning(message, filename, linep[0], null, 0);
+    }
+
+    public static void reportWarning(String message, Throwable t)
+    {
+        int[] linep = { 0 };
+        String filename = getSourcePositionFromStack(linep);
+        Writer sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        pw.println(message);
+        t.printStackTrace(pw);
+        pw.flush();
+        Context.reportWarning(sw.toString(), filename, linep[0], null, 0);
+    }
+
+    /**
+     * Report an error using the error reporter for the current thread.
+     *
+     * @param message the error message to report
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number
+     * @param lineSource the text of the line (may be null)
+     * @param lineOffset the offset into lineSource where problem was detected
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public static void reportError(String message, String sourceName,
+                                   int lineno, String lineSource,
+                                   int lineOffset)
+    {
+        Context cx = getCurrentContext();
+        if (cx != null) {
+            cx.getErrorReporter().error(message, sourceName, lineno,
+                                        lineSource, lineOffset);
+        } else {
+            throw new EvaluatorException(message, sourceName, lineno,
+                                         lineSource, lineOffset);
+        }
+    }
+
+    /**
+     * Report an error using the error reporter for the current thread.
+     *
+     * @param message the error message to report
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public static void reportError(String message)
+    {
+        int[] linep = { 0 };
+        String filename = getSourcePositionFromStack(linep);
+        Context.reportError(message, filename, linep[0], null, 0);
+    }
+
+    /**
+     * Report a runtime error using the error reporter for the current thread.
+     *
+     * @param message the error message to report
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number
+     * @param lineSource the text of the line (may be null)
+     * @param lineOffset the offset into lineSource where problem was detected
+     * @return a runtime exception that will be thrown to terminate the
+     *         execution of the script
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public static EvaluatorException reportRuntimeError(String message,
+                                                        String sourceName,
+                                                        int lineno,
+                                                        String lineSource,
+                                                        int lineOffset)
+    {
+        Context cx = getCurrentContext();
+        if (cx != null) {
+            return cx.getErrorReporter().
+                            runtimeError(message, sourceName, lineno,
+                                         lineSource, lineOffset);
+        } else {
+            throw new EvaluatorException(message, sourceName, lineno,
+                                         lineSource, lineOffset);
+        }
+    }
+
+    static EvaluatorException reportRuntimeError0(String messageId)
+    {
+        String msg = ScriptRuntime.getMessage0(messageId);
+        return reportRuntimeError(msg);
+    }
+
+    static EvaluatorException reportRuntimeError1(String messageId,
+                                                  Object arg1)
+    {
+        String msg = ScriptRuntime.getMessage1(messageId, arg1);
+        return reportRuntimeError(msg);
+    }
+
+    static EvaluatorException reportRuntimeError2(String messageId,
+                                                  Object arg1, Object arg2)
+    {
+        String msg = ScriptRuntime.getMessage2(messageId, arg1, arg2);
+        return reportRuntimeError(msg);
+    }
+
+    static EvaluatorException reportRuntimeError3(String messageId,
+                                                  Object arg1, Object arg2,
+                                                  Object arg3)
+    {
+        String msg = ScriptRuntime.getMessage3(messageId, arg1, arg2, arg3);
+        return reportRuntimeError(msg);
+    }
+
+    static EvaluatorException reportRuntimeError4(String messageId,
+                                                  Object arg1, Object arg2,
+                                                  Object arg3, Object arg4)
+    {
+        String msg
+            = ScriptRuntime.getMessage4(messageId, arg1, arg2, arg3, arg4);
+        return reportRuntimeError(msg);
+    }
+
+    /**
+     * Report a runtime error using the error reporter for the current thread.
+     *
+     * @param message the error message to report
+     * @see org.mozilla.javascript.ErrorReporter
+     */
+    public static EvaluatorException reportRuntimeError(String message)
+    {
+        int[] linep = { 0 };
+        String filename = getSourcePositionFromStack(linep);
+        return Context.reportRuntimeError(message, filename, linep[0], null, 0);
+    }
+
+    /**
+     * Initialize the standard objects.
+     *
+     * Creates instances of the standard objects and their constructors
+     * (Object, String, Number, Date, etc.), setting up 'scope' to act
+     * as a global object as in ECMA 15.1.<p>
+     *
+     * This method must be called to initialize a scope before scripts
+     * can be evaluated in that scope.<p>
+     *
+     * This method does not affect the Context it is called upon.
+     *
+     * @return the initialized scope
+     */
+    public final ScriptableObject initStandardObjects()
+    {
+        return initStandardObjects(null, false);
+    }
+
+    /**
+     * Initialize the standard objects.
+     *
+     * Creates instances of the standard objects and their constructors
+     * (Object, String, Number, Date, etc.), setting up 'scope' to act
+     * as a global object as in ECMA 15.1.<p>
+     *
+     * This method must be called to initialize a scope before scripts
+     * can be evaluated in that scope.<p>
+     *
+     * This method does not affect the Context it is called upon.
+     *
+     * @param scope the scope to initialize, or null, in which case a new
+     *        object will be created to serve as the scope
+     * @return the initialized scope. The method returns the value of the scope
+     *         argument if it is not null or newly allocated scope object which
+     *         is an instance {@link ScriptableObject}.
+     */
+    public final Scriptable initStandardObjects(ScriptableObject scope)
+    {
+        return initStandardObjects(scope, false);
+    }
+
+    /**
+     * Initialize the standard objects.
+     *
+     * Creates instances of the standard objects and their constructors
+     * (Object, String, Number, Date, etc.), setting up 'scope' to act
+     * as a global object as in ECMA 15.1.<p>
+     *
+     * This method must be called to initialize a scope before scripts
+     * can be evaluated in that scope.<p>
+     *
+     * This method does not affect the Context it is called upon.<p>
+     *
+     * This form of the method also allows for creating "sealed" standard
+     * objects. An object that is sealed cannot have properties added, changed,
+     * or removed. This is useful to create a "superglobal" that can be shared
+     * among several top-level objects. Note that sealing is not allowed in
+     * the current ECMA/ISO language specification, but is likely for
+     * the next version.
+     *
+     * @param scope the scope to initialize, or null, in which case a new
+     *        object will be created to serve as the scope
+     * @param sealed whether or not to create sealed standard objects that
+     *        cannot be modified.
+     * @return the initialized scope. The method returns the value of the scope
+     *         argument if it is not null or newly allocated scope object.
+     * @since 1.4R3
+     */
+    public ScriptableObject initStandardObjects(ScriptableObject scope,
+                                                boolean sealed)
+    {
+        return ScriptRuntime.initStandardObjects(this, scope, sealed);
+    }
+
+    /**
+     * Get the singleton object that represents the JavaScript Undefined value.
+     */
+    public static Object getUndefinedValue()
+    {
+        return Undefined.instance;
+    }
+
+    /**
+     * Evaluate a JavaScript source string.
+     *
+     * The provided source name and line number are used for error messages
+     * and for producing debug information.
+     *
+     * @param scope the scope to execute in
+     * @param source the JavaScript source
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number
+     * @param securityDomain an arbitrary object that specifies security
+     *        information about the origin or owner of the script. For
+     *        implementations that don't care about security, this value
+     *        may be null.
+     * @return the result of evaluating the string
+     * @see org.mozilla.javascript.SecurityController
+     */
+    public final Object evaluateString(Scriptable scope, String source,
+                                       String sourceName, int lineno,
+                                       Object securityDomain)
+    {
+        Script script = compileString(source, sourceName, lineno,
+                                      securityDomain);
+        if (script != null) {
+            return script.exec(this, scope);
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Evaluate a reader as JavaScript source.
+     *
+     * All characters of the reader are consumed.
+     *
+     * @param scope the scope to execute in
+     * @param in the Reader to get JavaScript source from
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number
+     * @param securityDomain an arbitrary object that specifies security
+     *        information about the origin or owner of the script. For
+     *        implementations that don't care about security, this value
+     *        may be null.
+     * @return the result of evaluating the source
+     *
+     * @exception IOException if an IOException was generated by the Reader
+     */
+    public final Object evaluateReader(Scriptable scope, Reader in,
+                                       String sourceName, int lineno,
+                                       Object securityDomain)
+        throws IOException
+    {
+        Script script = compileReader(scope, in, sourceName, lineno,
+                                      securityDomain);
+        if (script != null) {
+            return script.exec(this, scope);
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * Check whether a string is ready to be compiled.
+     * <p>
+     * stringIsCompilableUnit is intended to support interactive compilation of
+     * javascript.  If compiling the string would result in an error
+     * that might be fixed by appending more source, this method
+     * returns false.  In every other case, it returns true.
+     * <p>
+     * Interactive shells may accumulate source lines, using this
+     * method after each new line is appended to check whether the
+     * statement being entered is complete.
+     *
+     * @param source the source buffer to check
+     * @return whether the source is ready for compilation
+     * @since 1.4 Release 2
+     */
+    public final boolean stringIsCompilableUnit(String source)
+    {
+        boolean errorseen = false;
+        CompilerEnvirons compilerEnv = new CompilerEnvirons();
+        compilerEnv.initFromContext(this);
+        // no source name or source text manager, because we're just
+        // going to throw away the result.
+        compilerEnv.setGeneratingSource(false);
+        /*APPJET*/
+        Parser p = InformativeParser.makeParser(compilerEnv,
+                                                DefaultErrorReporter.instance);
+        try {
+            p.parse(source, null, 1);
+        } catch (EvaluatorException ee) {
+            errorseen = true;
+        }
+        // Return false only if an error occurred as a result of reading past
+        // the end of the file, i.e. if the source could be fixed by
+        // appending more source.
+        if (errorseen && p.eof())
+            return false;
+        else
+            return true;
+    }
+
+    /**
+     * @deprecated
+     * @see #compileReader(Reader in, String sourceName, int lineno,
+     *                     Object securityDomain)
+     */
+    public final Script compileReader(Scriptable scope, Reader in,
+                                      String sourceName, int lineno,
+                                      Object securityDomain)
+        throws IOException
+    {
+        return compileReader(in, sourceName, lineno, securityDomain);
+    }
+
+    /**
+     * Compiles the source in the given reader.
+     * <p>
+     * Returns a script that may later be executed.
+     * Will consume all the source in the reader.
+     *
+     * @param in the input reader
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number for reporting errors
+     * @param securityDomain an arbitrary object that specifies security
+     *        information about the origin or owner of the script. For
+     *        implementations that don't care about security, this value
+     *        may be null.
+     * @return a script that may later be executed
+     * @exception IOException if an IOException was generated by the Reader
+     * @see org.mozilla.javascript.Script
+     */
+    public final Script compileReader(Reader in, String sourceName,
+                                      int lineno, Object securityDomain)
+        throws IOException
+    {
+        if (lineno < 0) {
+            // For compatibility IllegalArgumentException can not be thrown here
+            lineno = 0;
+        }
+        return (Script) compileImpl(null, in, null, sourceName, lineno,
+                                    securityDomain, false, null, null);
+    }
+
+    /**
+     * Compiles the source in the given string.
+     * <p>
+     * Returns a script that may later be executed.
+     *
+     * @param source the source string
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number for reporting errors
+     * @param securityDomain an arbitrary object that specifies security
+     *        information about the origin or owner of the script. For
+     *        implementations that don't care about security, this value
+     *        may be null.
+     * @return a script that may later be executed
+     * @see org.mozilla.javascript.Script
+     */
+    public final Script compileString(String source,
+                                      String sourceName, int lineno,
+                                      Object securityDomain)
+    {
+        if (lineno < 0) {
+            // For compatibility IllegalArgumentException can not be thrown here
+            lineno = 0;
+        }
+        return compileString(source, null, null, sourceName, lineno,
+                             securityDomain);
+    }
+
+    final Script compileString(String source,
+                               Evaluator compiler,
+                               ErrorReporter compilationErrorReporter,
+                               String sourceName, int lineno,
+                               Object securityDomain)
+    {
+        try {
+            return (Script) compileImpl(null, null, source, sourceName, lineno,
+                                        securityDomain, false,
+                                        compiler, compilationErrorReporter);
+        } catch (IOException ex) {
+            // Should not happen when dealing with source as string
+            throw new RuntimeException();
+        }
+    }
+
+    /**
+     * Compile a JavaScript function.
+     * <p>
+     * The function source must be a function definition as defined by
+     * ECMA (e.g., "function f(a) { return a; }").
+     *
+     * @param scope the scope to compile relative to
+     * @param source the function definition source
+     * @param sourceName a string describing the source, such as a filename
+     * @param lineno the starting line number
+     * @param securityDomain an arbitrary object that specifies security
+     *        information about the origin or owner of the script. For
+     *        implementations that don't care about security, this value
+     *        may be null.
+     * @return a Function that may later be called
+     * @see org.mozilla.javascript.Function
+     */
+    public final Function compileFunction(Scriptable scope, String source,
+                                          String sourceName, int lineno,
+                                          Object securityDomain)
+    {
+        return compileFunction(scope, source, null, null, sourceName, lineno,
+                               securityDomain);
+    }
+
+    final Function compileFunction(Scriptable scope, String source,
+                                   Evaluator compiler,
+                                   ErrorReporter compilationErrorReporter,
+                                   String sourceName, int lineno,
+                                   Object securityDomain)
+    {
+        try {
+            return (Function) compileImpl(scope, null, source, sourceName,
+                                          lineno, securityDomain, true,
+                                          compiler, compilationErrorReporter);
+        }
+        catch (IOException ioe) {
+            // Should never happen because we just made the reader
+            // from a String
+            throw new RuntimeException();
+        }
+    }
+
+    /**
+     * Decompile the script.
+     * <p>
+     * The canonical source of the script is returned.
+     *
+     * @param script the script to decompile
+     * @param indent the number of spaces to indent the result
+     * @return a string representing the script source
+     */
+    public final String decompileScript(Script script, int indent)
+    {
+        NativeFunction scriptImpl = (NativeFunction) script;
+        return scriptImpl.decompile(indent, 0);
+    }
+
+    /**
+     * Decompile a JavaScript Function.
+     * <p>
+     * Decompiles a previously compiled JavaScript function object to
+     * canonical source.
+     * <p>
+     * Returns function body of '[native code]' if no decompilation
+     * information is available.
+     *
+     * @param fun the JavaScript function to decompile
+     * @param indent the number of spaces to indent the result
+     * @return a string representing the function source
+     */
+    public final String decompileFunction(Function fun, int indent)
+    {
+        if (fun instanceof BaseFunction)
+            return ((BaseFunction)fun).decompile(indent, 0);
+        else
+            return "function " + fun.getClassName() +
+                   "() {\n\t[native code]\n}\n";
+    }
+
+    /**
+     * Decompile the body of a JavaScript Function.
+     * <p>
+     * Decompiles the body a previously compiled JavaScript Function
+     * object to canonical source, omitting the function header and
+     * trailing brace.
+     *
+     * Returns '[native code]' if no decompilation information is available.
+     *
+     * @param fun the JavaScript function to decompile
+     * @param indent the number of spaces to indent the result
+     * @return a string representing the function body source.
+     */
+    public final String decompileFunctionBody(Function fun, int indent)
+    {
+        if (fun instanceof BaseFunction) {
+            BaseFunction bf = (BaseFunction)fun;
+            return bf.decompile(indent, Decompiler.ONLY_BODY_FLAG);
+        }
+        // ALERT: not sure what the right response here is.
+        return "[native code]\n";
+    }
+
+    /**
+     * Create a new JavaScript object.
+     *
+     * Equivalent to evaluating "new Object()".
+     * @param scope the scope to search for the constructor and to evaluate
+     *              against
+     * @return the new object
+     */
+    public final Scriptable newObject(Scriptable scope)
+    {
+        return newObject(scope, "Object", ScriptRuntime.emptyArgs);
+    }
+
+    /**
+     * Create a new JavaScript object by executing the named constructor.
+     *
+     * The call <code>newObject(scope, "Foo")</code> is equivalent to
+     * evaluating "new Foo()".
+     *
+     * @param scope the scope to search for the constructor and to evaluate against
+     * @param constructorName the name of the constructor to call
+     * @return the new object
+     */
+    public final Scriptable newObject(Scriptable scope, String constructorName)
+    {
+        return newObject(scope, constructorName, ScriptRuntime.emptyArgs);
+    }
+
+    /**
+     * Creates a new JavaScript object by executing the named constructor.
+     *
+     * Searches <code>scope</code> for the named constructor, calls it with
+     * the given arguments, and returns the result.<p>
+     *
+     * The code
+     * <pre>
+     * Object[] args = { "a", "b" };
+     * newObject(scope, "Foo", args)</pre>
+     * is equivalent to evaluating "new Foo('a', 'b')", assuming that the Foo
+     * constructor has been defined in <code>scope</code>.
+     *
+     * @param scope The scope to search for the constructor and to evaluate
+     *              against
+     * @param constructorName the name of the constructor to call
+     * @param args the array of arguments for the constructor
+     * @return the new object
+     */
+    public final Scriptable newObject(Scriptable scope, String constructorName,
+                                      Object[] args)
+    {
+        scope = ScriptableObject.getTopLevelScope(scope);
+        Function ctor = ScriptRuntime.getExistingCtor(this, scope,
+                                                      constructorName);
+        if (args == null) { args = ScriptRuntime.emptyArgs; }
+        return ctor.construct(this, scope, args);
+    }
+
+    /**
+     * Create an array with a specified initial length.
+     * <p>
+     * @param scope the scope to create the object in
+     * @param length the initial length (JavaScript arrays may have
+     *               additional properties added dynamically).
+     * @return the new array object
+     */
+    public final Scriptable newArray(Scriptable scope, int length)
+    {
+        NativeArray result = new NativeArray(length);
+        ScriptRuntime.setObjectProtoAndParent(result, scope);
+        return result;
+    }
+
+    /**
+     * Create an array with a set of initial elements.
+     *
+     * @param scope the scope to create the object in.
+     * @param elements the initial elements. Each object in this array
+     *                 must be an acceptable JavaScript type and type
+     *                 of array should be exactly Object[], not
+     *                 SomeObjectSubclass[].
+     * @return the new array object.
+     */
+    public final Scriptable newArray(Scriptable scope, Object[] elements)
+    {
+        if (elements.getClass().getComponentType() != ScriptRuntime.ObjectClass)
+            throw new IllegalArgumentException();
+        NativeArray result = new NativeArray(elements);
+        ScriptRuntime.setObjectProtoAndParent(result, scope);
+        return result;
+    }
+
+    /**
+     * Get the elements of a JavaScript array.
+     * <p>
+     * If the object defines a length property convertible to double number,
+     * then the number is converted Uint32 value as defined in Ecma 9.6
+     * and Java array of that size is allocated.
+     * The array is initialized with the values obtained by
+     * calling get() on object for each value of i in [0,length-1]. If
+     * there is not a defined value for a property the Undefined value
+     * is used to initialize the corresponding element in the array. The
+     * Java array is then returned.
+     * If the object doesn't define a length property or it is not a number,
+     * empty array is returned.
+     * @param object the JavaScript array or array-like object
+     * @return a Java array of objects
+     * @since 1.4 release 2
+     */
+    public final Object[] getElements(Scriptable object)
+    {
+        return ScriptRuntime.getArrayElements(object);
+    }
+
+    /**
+     * Convert the value to a JavaScript boolean value.
+     * <p>
+     * See ECMA 9.2.
+     *
+     * @param value a JavaScript value
+     * @return the corresponding boolean value converted using
+     *         the ECMA rules
+     */
+    public static boolean toBoolean(Object value)
+    {
+        return ScriptRuntime.toBoolean(value);
+    }
+
+    /**
+     * Convert the value to a JavaScript Number value.
+     * <p>
+     * Returns a Java double for the JavaScript Number.
+     * <p>
+     * See ECMA 9.3.
+     *
+     * @param value a JavaScript value
+     * @return the corresponding double value converted using
+     *         the ECMA rules
+     */
+    public static double toNumber(Object value)
+    {
+        return ScriptRuntime.toNumber(value);
+    }
+
+    /**
+     * Convert the value to a JavaScript String value.
+     * <p>
+     * See ECMA 9.8.
+     * <p>
+     * @param value a JavaScript value
+     * @return the corresponding String value converted using
+     *         the ECMA rules
+     */
+    public static String toString(Object value)
+    {
+        return ScriptRuntime.toString(value);
+    }
+
+    /**
+     * Convert the value to an JavaScript object value.
+     * <p>
+     * Note that a scope must be provided to look up the constructors
+     * for Number, Boolean, and String.
+     * <p>
+     * See ECMA 9.9.
+     * <p>
+     * Additionally, arbitrary Java objects and classes will be
+     * wrapped in a Scriptable object with its Java fields and methods
+     * reflected as JavaScript properties of the object.
+     *
+     * @param value any Java object
+     * @param scope global scope containing constructors for Number,
+     *              Boolean, and String
+     * @return new JavaScript object
+     */
+    public static Scriptable toObject(Object value, Scriptable scope)
+    {
+        return ScriptRuntime.toObject(scope, value);
+    }
+
+    /**
+     * @deprecated
+     * @see #toObject(Object, Scriptable)
+     */
+    public static Scriptable toObject(Object value, Scriptable scope,
+                                      Class staticType)
+    {
+        return ScriptRuntime.toObject(scope, value);
+    }
+
+    /**
+     * Convenient method to convert java value to its closest representation
+     * in JavaScript.
+     * <p>
+     * If value is an instance of String, Number, Boolean, Function or
+     * Scriptable, it is returned as it and will be treated as the corresponding
+     * JavaScript type of string, number, boolean, function and object.
+     * <p>
+     * Note that for Number instances during any arithmetic operation in
+     * JavaScript the engine will always use the result of
+     * <tt>Number.doubleValue()</tt> resulting in a precision loss if
+     * the number can not fit into double.
+     * <p>
+     * If value is an instance of Character, it will be converted to string of
+     * length 1 and its JavaScript type will be string.
+     * <p>
+     * The rest of values will be wrapped as LiveConnect objects
+     * by calling {@link WrapFactory#wrap(Context cx, Scriptable scope,
+     * Object obj, Class staticType)} as in:
+     * <pre>
+     *    Context cx = Context.getCurrentContext();
+     *    return cx.getWrapFactory().wrap(cx, scope, value, null);
+     * </pre>
+     *
+     * @param value any Java object
+     * @param scope top scope object
+     * @return value suitable to pass to any API that takes JavaScript values.
+     */
+    public static Object javaToJS(Object value, Scriptable scope)
+    {
+        if (value instanceof String || value instanceof Number
+            || value instanceof Boolean || value instanceof Scriptable)
+        {
+            return value;
+        } else if (value instanceof Character) {
+            return String.valueOf(((Character)value).charValue());
+        } else {
+            Context cx = Context.getContext();
+            return cx.getWrapFactory().wrap(cx, scope, value, null);
+        }
+    }
+
+    /**
+     * Convert a JavaScript value into the desired type.
+     * Uses the semantics defined with LiveConnect3 and throws an
+     * Illegal argument exception if the conversion cannot be performed.
+     * @param value the JavaScript value to convert
+     * @param desiredType the Java type to convert to. Primitive Java
+     *        types are represented using the TYPE fields in the corresponding
+     *        wrapper class in java.lang.
+     * @return the converted value
+     * @throws EvaluatorException if the conversion cannot be performed
+     */
+    public static Object jsToJava(Object value, Class desiredType)
+        throws EvaluatorException
+    {
+        return NativeJavaObject.coerceTypeImpl(desiredType, value);
+    }
+
+    /**
+     * @deprecated
+     * @see #jsToJava(Object, Class)
+     * @throws IllegalArgumentException if the conversion cannot be performed.
+     *         Note that {@link #jsToJava(Object, Class)} throws
+     *         {@link EvaluatorException} instead.
+     */
+    public static Object toType(Object value, Class desiredType)
+        throws IllegalArgumentException
+    {
+        try {
+            return jsToJava(value, desiredType);
+        } catch (EvaluatorException ex) {
+            IllegalArgumentException
+                ex2 = new IllegalArgumentException(ex.getMessage());
+            Kit.initCause(ex2, ex);
+            throw ex2;
+        }
+    }
+
+    /**
+     * Rethrow the exception wrapping it as the script runtime exception.
+     * Unless the exception is instance of {@link EcmaError} or
+     * {@link EvaluatorException} it will be wrapped as
+     * {@link WrappedException}, a subclass of {@link EvaluatorException}.
+     * The resulting exception object always contains
+     * source name and line number of script that triggered exception.
+     * <p>
+     * This method always throws an exception, its return value is provided
+     * only for convenience to allow a usage like:
+     * <pre>
+     * throw Context.throwAsScriptRuntimeEx(ex);
+     * </pre>
+     * to indicate that code after the method is unreachable.
+     * @throws EvaluatorException
+     * @throws EcmaError
+     */
+    public static RuntimeException throwAsScriptRuntimeEx(Throwable e)
+    {
+        while ((e instanceof InvocationTargetException)) {
+            e = ((InvocationTargetException) e).getTargetException();
+        }
+        // special handling of Error so scripts would not catch them
+        if (e instanceof Error) {
+            Context cx = getContext();
+            if (cx == null ||
+                !cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS))
+            {
+                throw (Error)e;
+            }
+        }
+        if (e instanceof RhinoException) {
+            throw (RhinoException)e;
+        }
+        throw new WrappedException(e);
+    }
+
+    /**
+     * Tell whether debug information is being generated.
+     * @since 1.3
+     */
+    public final boolean isGeneratingDebug()
+    {
+        return generatingDebug;
+    }
+
+    /**
+     * Specify whether or not debug information should be generated.
+     * <p>
+     * Setting the generation of debug information on will set the
+     * optimization level to zero.
+     * @since 1.3
+     */
+    public final void setGeneratingDebug(boolean generatingDebug)
+    {
+        if (sealed) onSealedMutation();
+        generatingDebugChanged = true;
+        if (generatingDebug && getOptimizationLevel() > 0)
+            setOptimizationLevel(0);
+        this.generatingDebug = generatingDebug;
+    }
+
+    /**
+     * Tell whether source information is being generated.
+     * @since 1.3
+     */
+    public final boolean isGeneratingSource()
+    {
+        return generatingSource;
+    }
+
+    /**
+     * Specify whether or not source information should be generated.
+     * <p>
+     * Without source information, evaluating the "toString" method
+     * on JavaScript functions produces only "[native code]" for
+     * the body of the function.
+     * Note that code generated without source is not fully ECMA
+     * conformant.
+     * @since 1.3
+     */
+    public final void setGeneratingSource(boolean generatingSource)
+    {
+        if (sealed) onSealedMutation();
+        this.generatingSource = generatingSource;
+    }
+
+    /**
+     * Get the current optimization level.
+     * <p>
+     * The optimization level is expressed as an integer between -1 and
+     * 9.
+     * @since 1.3
+     *
+     */
+    public final int getOptimizationLevel()
+    {
+        return optimizationLevel;
+    }
+    
+    /**
+     * Set the current optimization level.
+     * <p>
+     * The optimization level is expected to be an integer between -1 and
+     * 9. Any negative values will be interpreted as -1, and any values
+     * greater than 9 will be interpreted as 9.
+     * An optimization level of -1 indicates that interpretive mode will
+     * always be used. Levels 0 through 9 indicate that class files may
+     * be generated. Higher optimization levels trade off compile time
+     * performance for runtime performance.
+     * The optimizer level can't be set greater than -1 if the optimizer
+     * package doesn't exist at run time.
+     * @param optimizationLevel an integer indicating the level of
+     *        optimization to perform
+     * @since 1.3
+     *
+     */
+    public final void setOptimizationLevel(int optimizationLevel)
+    {
+        if (sealed) onSealedMutation();
+        if (optimizationLevel == -2) {
+            // To be compatible with Cocoon fork
+            optimizationLevel = -1;
+        }
+        checkOptimizationLevel(optimizationLevel);
+        if (codegenClass == null)
+            optimizationLevel = -1;
+        this.optimizationLevel = optimizationLevel;
+    }
+
+    public static boolean isValidOptimizationLevel(int optimizationLevel)
+    {
+        return -1 <= optimizationLevel && optimizationLevel <= 9;
+    }
+
+    public static void checkOptimizationLevel(int optimizationLevel)
+    {
+        if (isValidOptimizationLevel(optimizationLevel)) {
+            return;
+        }
+        throw new IllegalArgumentException(
+            "Optimization level outside [-1..9]: "+optimizationLevel);
+    }
+
+    /**
+     * Returns the maximum stack depth (in terms of number of call frames) 
+     * allowed in a single invocation of interpreter. If the set depth would be
+     * exceeded, the interpreter will throw an EvaluatorException in the script.
+     * Defaults to Integer.MAX_VALUE. The setting only has effect for 
+     * interpreted functions (those compiled with optimization level set to -1).
+     * As the interpreter doesn't use the Java stack but rather manages its own
+     * stack in the heap memory, a runaway recursion in interpreted code would 
+     * eventually consume all available memory and cause OutOfMemoryError 
+     * instead of a StackOverflowError limited to only a single thread. This
+     * setting helps prevent such situations.
+     *  
+     * @return The current maximum interpreter stack depth.
+     */
+    public final int getMaximumInterpreterStackDepth()
+    {
+        return maximumInterpreterStackDepth;
+    }
+
+    /**
+     * Sets the maximum stack depth (in terms of number of call frames) 
+     * allowed in a single invocation of interpreter. If the set depth would be
+     * exceeded, the interpreter will throw an EvaluatorException in the script.
+     * Defaults to Integer.MAX_VALUE. The setting only has effect for 
+     * interpreted functions (those compiled with optimization level set to -1).
+     * As the interpreter doesn't use the Java stack but rather manages its own
+     * stack in the heap memory, a runaway recursion in interpreted code would 
+     * eventually consume all available memory and cause OutOfMemoryError 
+     * instead of a StackOverflowError limited to only a single thread. This
+     * setting helps prevent such situations.
+     * 
+     * @param max the new maximum interpreter stack depth
+     * @throws IllegalStateException if this context's optimization level is not
+     * -1
+     * @throws IllegalArgumentException if the new depth is not at least 1 
+     */
+    public final void setMaximumInterpreterStackDepth(int max)
+    {
+        if(sealed) onSealedMutation();
+        if(optimizationLevel != -1) {
+            throw new IllegalStateException("Cannot set maximumInterpreterStackDepth when optimizationLevel != -1");
+        }
+        if(max < 1) {
+            throw new IllegalArgumentException("Cannot set maximumInterpreterStackDepth to less than 1");
+        }
+        maximumInterpreterStackDepth = max;
+    }
+    
+    /**
+     * Set the security controller for this context.
+     * <p> SecurityController may only be set if it is currently null
+     * and {@link SecurityController#hasGlobal()} is <tt>false</tt>.
+     * Otherwise a SecurityException is thrown.
+     * @param controller a SecurityController object
+     * @throws SecurityException if there is already a SecurityController
+     *         object for this Context or globally installed.
+     * @see SecurityController#initGlobal(SecurityController controller)
+     * @see SecurityController#hasGlobal()
+     */
+    public final void setSecurityController(SecurityController controller)
+    {
+        if (sealed) onSealedMutation();
+        if (controller == null) throw new IllegalArgumentException();
+        if (securityController != null) {
+            throw new SecurityException("Can not overwrite existing SecurityController object");
+        }
+        if (SecurityController.hasGlobal()) {
+            throw new SecurityException("Can not overwrite existing global SecurityController object");
+        }
+        securityController = controller;
+    }
+
+    /**
+     * Set the LiveConnect access filter for this context.
+     * <p> {@link ClassShutter} may only be set if it is currently null.
+     * Otherwise a SecurityException is thrown.
+     * @param shutter a ClassShutter object
+     * @throws SecurityException if there is already a ClassShutter
+     *         object for this Context
+     */
+    public final void setClassShutter(ClassShutter shutter)
+    {
+        if (sealed) onSealedMutation();
+        if (shutter == null) throw new IllegalArgumentException();
+        if (classShutter != null) {
+            throw new SecurityException("Cannot overwrite existing " +
+                                        "ClassShutter object");
+        }
+        classShutter = shutter;
+    }
+
+    final ClassShutter getClassShutter()
+    {
+        return classShutter;
+    }
+
+    /**
+     * Get a value corresponding to a key.
+     * <p>
+     * Since the Context is associated with a thread it can be
+     * used to maintain values that can be later retrieved using
+     * the current thread.
+     * <p>
+     * Note that the values are maintained with the Context, so
+     * if the Context is disassociated from the thread the values
+     * cannot be retrieved. Also, if private data is to be maintained
+     * in this manner the key should be a java.lang.Object
+     * whose reference is not divulged to untrusted code.
+     * @param key the key used to lookup the value
+     * @return a value previously stored using putThreadLocal.
+     */
+    public final Object getThreadLocal(Object key)
+    {
+        if (hashtable == null)
+            return null;
+        return hashtable.get(key);
+    }
+
+    /**
+     * Put a value that can later be retrieved using a given key.
+     * <p>
+     * @param key the key used to index the value
+     * @param value the value to save
+     */
+    public final void putThreadLocal(Object key, Object value)
+    {
+        if (sealed) onSealedMutation();
+        if (hashtable == null)
+            hashtable = new Hashtable();
+        hashtable.put(key, value);
+    }
+
+    /**
+     * Remove values from thread-local storage.
+     * @param key the key for the entry to remove.
+     * @since 1.5 release 2
+     */
+    public final void removeThreadLocal(Object key)
+    {
+        if (sealed) onSealedMutation();
+        if (hashtable == null)
+            return;
+        hashtable.remove(key);
+    }
+
+    /**
+     * @deprecated
+     * @see #FEATURE_DYNAMIC_SCOPE
+     * @see #hasFeature(int)
+     */
+    public final boolean hasCompileFunctionsWithDynamicScope()
+    {
+        return compileFunctionsWithDynamicScopeFlag;
+    }
+
+    /**
+     * @deprecated
+     * @see #FEATURE_DYNAMIC_SCOPE
+     * @see #hasFeature(int)
+     */
+    public final void setCompileFunctionsWithDynamicScope(boolean flag)
+    {
+        if (sealed) onSealedMutation();
+        compileFunctionsWithDynamicScopeFlag = flag;
+    }
+
+    /**
+     * @deprecated
+     * @see ClassCache#get(Scriptable)
+     * @see ClassCache#setCachingEnabled(boolean)
+     */
+    public static void setCachingEnabled(boolean cachingEnabled)
+    {
+    }
+
+    /**
+     * Set a WrapFactory for this Context.
+     * <p>
+     * The WrapFactory allows custom object wrapping behavior for
+     * Java object manipulated with JavaScript.
+     * @see WrapFactory
+     * @since 1.5 Release 4
+     */
+    public final void setWrapFactory(WrapFactory wrapFactory)
+    {
+        if (sealed) onSealedMutation();
+        if (wrapFactory == null) throw new IllegalArgumentException();
+        this.wrapFactory = wrapFactory;
+    }
+
+    /**
+     * Return the current WrapFactory, or null if none is defined.
+     * @see WrapFactory
+     * @since 1.5 Release 4
+     */
+    public final WrapFactory getWrapFactory()
+    {
+        if (wrapFactory == null) {
+            wrapFactory = new WrapFactory();
+        }
+        return wrapFactory;
+    }
+
+    /**
+     * Return the current debugger.
+     * @return the debugger, or null if none is attached.
+     */
+    public final Debugger getDebugger()
+    {
+        return debugger;
+    }
+
+    /**
+     * Return the debugger context data associated with current context.
+     * @return the debugger data, or null if debugger is not attached
+     */
+    public final Object getDebuggerContextData()
+    {
+        return debuggerData;
+    }
+
+    /**
+     * Set the associated debugger.
+     * @param debugger the debugger to be used on callbacks from
+     * the engine.
+     * @param contextData arbitrary object that debugger can use to store
+     *        per Context data.
+     */
+    public final void setDebugger(Debugger debugger, Object contextData)
+    {
+        if (sealed) onSealedMutation();
+        this.debugger = debugger;
+        debuggerData = contextData;
+    }
+
+    /**
+     * Return DebuggableScript instance if any associated with the script.
+     * If callable supports DebuggableScript implementation, the method
+     * returns it. Otherwise null is returned.
+     */
+    public static DebuggableScript getDebuggableView(Script script)
+    {
+        if (script instanceof NativeFunction) {
+            return ((NativeFunction)script).getDebuggableView();
+        }
+        return null;
+    }
+
+    /**
+     * Controls certain aspects of script semantics.
+     * Should be overwritten to alter default behavior.
+     * <p>
+     * The default implementation calls
+     * {@link ContextFactory#hasFeature(Context cx, int featureIndex)}
+     * that allows to customize Context behavior without introducing
+     * Context subclasses.  {@link ContextFactory} documentation gives
+     * an example of hasFeature implementation.
+     *
+     * @param featureIndex feature index to check
+     * @return true if the <code>featureIndex</code> feature is turned on
+     * @see #FEATURE_NON_ECMA_GET_YEAR
+     * @see #FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME
+     * @see #FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER
+     * @see #FEATURE_TO_STRING_AS_SOURCE
+     * @see #FEATURE_PARENT_PROTO_PROPRTIES
+     * @see #FEATURE_E4X
+     * @see #FEATURE_DYNAMIC_SCOPE
+     * @see #FEATURE_STRICT_VARS
+     * @see #FEATURE_STRICT_EVAL
+     * @see #FEATURE_LOCATION_INFORMATION_IN_ERROR
+     * @see #FEATURE_STRICT_MODE
+     * @see #FEATURE_WARNING_AS_ERROR
+     * @see #FEATURE_ENHANCED_JAVA_ACCESS
+     */
+    public boolean hasFeature(int featureIndex)
+    {
+        ContextFactory f = getFactory();
+        return f.hasFeature(this, featureIndex);
+    }
+	
+	/**
+		Returns an object which specifies an E4X implementation to use within
+		this <code>Context</code>.  Note
+		that the XMLLib.Factory interface should be considered experimental.
+	 
+		The default implementation uses the implementation provided by this
+		<code>Context</code>'s {@link ContextFactory}.
+	 
+		@return An XMLLib.Factory.  Should not return <code>null</code> if
+			{@link #FEATURE_E4X} is enabled.  See {@link #hasFeature}.
+	 */
+	public XMLLib.Factory getE4xImplementationFactory() {
+		return getFactory().getE4xImplementationFactory();
+	}
+
+    /**
+     * Get threshold of executed instructions counter that triggers call to
+     * <code>observeInstructionCount()</code>.
+     * When the threshold is zero, instruction counting is disabled,
+     * otherwise each time the run-time executes at least the threshold value
+     * of script instructions, <code>observeInstructionCount()</code> will
+     * be called.
+     */
+    public final int getInstructionObserverThreshold()
+    {
+        return instructionThreshold;
+    }
+
+    /**
+     * Set threshold of executed instructions counter that triggers call to
+     * <code>observeInstructionCount()</code>.
+     * When the threshold is zero, instruction counting is disabled,
+     * otherwise each time the run-time executes at least the threshold value
+     * of script instructions, <code>observeInstructionCount()</code> will
+     * be called.<p/>
+     * Note that the meaning of "instruction" is not guaranteed to be
+     * consistent between compiled and interpretive modes: executing a given
+     * script or function in the different modes will result in different
+     * instruction counts against the threshold.
+     * {@link #setGenerateObserverCount} is called with true if
+     * <code>threshold</code> is greater than zero, false otherwise.
+     * @param threshold The instruction threshold
+     */
+    public final void setInstructionObserverThreshold(int threshold)
+    {
+        if (sealed) onSealedMutation();
+        if (threshold < 0) throw new IllegalArgumentException();
+        instructionThreshold = threshold;
+        setGenerateObserverCount(threshold > 0);
+    }
+
+    /**
+     * Turn on or off generation of code with callbacks to
+     * track the count of executed instructions.
+     * Currently only affects JVM byte code generation: this slows down the
+     * generated code, but code generated without the callbacks will not
+     * be counted toward instruction thresholds. Rhino's interpretive
+     * mode does instruction counting without inserting callbacks, so
+     * there is no requirement to compile code differently.
+     * @param generateObserverCount if true, generated code will contain
+     * calls to accumulate an estimate of the instructions executed.
+     */
+    public void setGenerateObserverCount(boolean generateObserverCount) {
+    	this.generateObserverCount = generateObserverCount;
+    }
+
+    /**
+     * Allow application to monitor counter of executed script instructions
+     * in Context subclasses.
+     * Run-time calls this when instruction counting is enabled and the counter
+     * reaches limit set by <code>setInstructionObserverThreshold()</code>.
+     * The method is useful to observe long running scripts and if necessary
+     * to terminate them.
+     * <p>
+     * The instruction counting support is available only for interpreted
+     * scripts generated when the optimization level is set to -1.
+     * <p>
+     * The default implementation calls
+     * {@link ContextFactory#observeInstructionCount(Context cx,
+     *                                               int instructionCount)}
+     * that allows to customize Context behavior without introducing
+     * Context subclasses.
+     *
+     * @param instructionCount amount of script instruction executed since
+     * last call to <code>observeInstructionCount</code>
+     * @throws Error to terminate the script
+     * @see #setOptimizationLevel(int)
+     */
+    protected void observeInstructionCount(int instructionCount)
+    {
+        ContextFactory f = getFactory();
+        f.observeInstructionCount(this, instructionCount);
+    }
+
+    /**
+     * Create class loader for generated classes.
+     * The method calls {@link ContextFactory#createClassLoader(ClassLoader)}
+     * using the result of {@link #getFactory()}.
+     */
+    public GeneratedClassLoader createClassLoader(ClassLoader parent)
+    {
+        ContextFactory f = getFactory();
+        return f.createClassLoader(parent);
+    }
+
+    public final ClassLoader getApplicationClassLoader()
+    {
+        if (applicationClassLoader == null) {
+            ContextFactory f = getFactory();
+            ClassLoader loader = f.getApplicationClassLoader();
+            if (loader == null) {
+                ClassLoader threadLoader
+                    = VMBridge.instance.getCurrentThreadClassLoader();
+                if (threadLoader != null
+                    && Kit.testIfCanLoadRhinoClasses(threadLoader))
+                {
+                    // Thread.getContextClassLoader is not cached since
+                    // its caching prevents it from GC which may lead to
+                    // a memory leak and hides updates to
+                    // Thread.getContextClassLoader
+                    return threadLoader;
+                }
+                // Thread.getContextClassLoader can not load Rhino classes,
+                // try to use the loader of ContextFactory or Context
+                // subclasses.
+                Class fClass = f.getClass();
+                if (fClass != ScriptRuntime.ContextFactoryClass) {
+                    loader = fClass.getClassLoader();
+                } else {
+                    loader = getClass().getClassLoader();
+                }
+            }
+            applicationClassLoader = loader;
+        }
+        return applicationClassLoader;
+    }
+
+    public final void setApplicationClassLoader(ClassLoader loader)
+    {
+        if (sealed) onSealedMutation();
+        if (loader == null) {
+            // restore default behaviour
+            applicationClassLoader = null;
+            return;
+        }
+        if (!Kit.testIfCanLoadRhinoClasses(loader)) {
+            throw new IllegalArgumentException(
+                "Loader can not resolve Rhino classes");
+        }
+        applicationClassLoader = loader;
+    }
+
+    /********** end of API **********/
+
+    /**
+     * Internal method that reports an error for missing calls to
+     * enter().
+     */
+    static Context getContext()
+    {
+        Context cx = getCurrentContext();
+        if (cx == null) {
+            throw new RuntimeException(
+                "No Context associated with current Thread");
+        }
+        return cx;
+    }
+
+    private Object compileImpl(Scriptable scope,
+                               Reader sourceReader, String sourceString,
+                               String sourceName, int lineno,
+                               Object securityDomain, boolean returnFunction,
+                               Evaluator compiler,
+                               ErrorReporter compilationErrorReporter)
+        throws IOException
+    {
+        if(sourceName == null) {
+            sourceName = "unnamed script";
+        }
+        if (securityDomain != null && getSecurityController() == null) {
+            throw new IllegalArgumentException(
+                "securityDomain should be null if setSecurityController() was never called");
+        }
+
+        // One of sourceReader or sourceString has to be null
+        if (!(sourceReader == null ^ sourceString == null)) Kit.codeBug();
+        // scope should be given if and only if compiling function
+        if (!(scope == null ^ returnFunction)) Kit.codeBug();
+
+        CompilerEnvirons compilerEnv = new CompilerEnvirons();
+        compilerEnv.initFromContext(this);
+        if (compilationErrorReporter == null) {
+            compilationErrorReporter = compilerEnv.getErrorReporter();
+        }
+
+        if (debugger != null) {
+            if (sourceReader != null) {
+                sourceString = Kit.readReader(sourceReader);
+                sourceReader = null;
+            }
+        }
+
+        /*APPJET*/
+        Parser p = InformativeParser.makeParser(compilerEnv,
+                                                    compilationErrorReporter);
+        if (returnFunction) {
+            p.calledByCompileFunction = true;
+        }
+        ScriptOrFnNode tree;
+        if (sourceString != null) {
+            tree = p.parse(sourceString, sourceName, lineno);
+        } else {
+            tree = p.parse(sourceReader, sourceName, lineno);
+        }
+        if (returnFunction) {
+            if (!(tree.getFunctionCount() == 1
+                  && tree.getFirstChild() != null
+                  && tree.getFirstChild().getType() == Token.FUNCTION))
+            {
+                // XXX: the check just look for the first child
+                // and allows for more nodes after it for compatibility
+                // with sources like function() {};;;
+                throw new IllegalArgumentException(
+                    "compileFunction only accepts source with single JS function: "+sourceString);
+            }
+        }
+
+        if (compiler == null) {
+            compiler = createCompiler();
+        }
+
+        String encodedSource = p.getEncodedSource();
+
+        Object bytecode = compiler.compile(compilerEnv,
+                                           tree, encodedSource,
+                                           returnFunction);
+
+        if (debugger != null) {
+            if (sourceString == null) Kit.codeBug();
+            if (bytecode instanceof DebuggableScript) {
+                DebuggableScript dscript = (DebuggableScript)bytecode;
+                notifyDebugger_r(this, dscript, sourceString);
+            } else {
+                throw new RuntimeException("NOT SUPPORTED");
+            }
+        }
+
+        Object result;
+        if (returnFunction) {
+            result = compiler.createFunctionObject(this, scope, bytecode, securityDomain);
+        } else {
+            result = compiler.createScriptObject(bytecode, securityDomain);
+        }
+
+        return result;
+    }
+
+    private static void notifyDebugger_r(Context cx, DebuggableScript dscript,
+                                         String debugSource)
+    {
+        cx.debugger.handleCompilationDone(cx, dscript, debugSource);
+        for (int i = 0; i != dscript.getFunctionCount(); ++i) {
+            notifyDebugger_r(cx, dscript.getFunction(i), debugSource);
+        }
+    }
+
+    private static Class codegenClass = Kit.classOrNull(
+                             "org.mozilla.javascript.optimizer.Codegen");
+    private static Class interpreterClass = Kit.classOrNull(
+                             "org.mozilla.javascript.Interpreter");
+
+    private Evaluator createCompiler()
+    {
+        Evaluator result = null;
+        if (optimizationLevel >= 0 && codegenClass != null) {
+            result = (Evaluator)Kit.newInstanceOrNull(codegenClass);
+        }
+        if (result == null) {
+            result = createInterpreter();
+        }
+        return result;
+    }
+
+    static Evaluator createInterpreter()
+    {
+        return (Evaluator)Kit.newInstanceOrNull(interpreterClass);
+    }
+
+    static String getSourcePositionFromStack(int[] linep)
+    {
+        Context cx = getCurrentContext();
+        if (cx == null)
+            return null;
+        if (cx.lastInterpreterFrame != null) {
+            Evaluator evaluator = createInterpreter();
+            if (evaluator != null)
+                return evaluator.getSourcePositionFromStack(cx, linep);
+        }
+        /**
+         * A bit of a hack, but the only way to get filename and line
+         * number from an enclosing frame.
+         */
+        CharArrayWriter writer = new CharArrayWriter();
+        RuntimeException re = new RuntimeException();
+        re.printStackTrace(new PrintWriter(writer));
+        String s = writer.toString();
+        int open = -1;
+        int close = -1;
+        int colon = -1;
+        for (int i=0; i < s.length(); i++) {
+            char c = s.charAt(i);
+            if (c == ':')
+                colon = i;
+            else if (c == '(')
+                open = i;
+            else if (c == ')')
+                close = i;
+            else if (c == '\n' && open != -1 && close != -1 && colon != -1 &&
+                     open < colon && colon < close)
+            {
+                String fileStr = s.substring(open + 1, colon);
+                if (!fileStr.endsWith(".java")) {
+                    String lineStr = s.substring(colon + 1, close);
+                    try {
+                        linep[0] = Integer.parseInt(lineStr);
+                        if (linep[0] < 0) {
+                            linep[0] = 0;
+                        }
+                        return fileStr;
+                    }
+                    catch (NumberFormatException e) {
+                        // fall through
+                    }
+                }
+                open = close = colon = -1;
+            }
+        }
+
+        return null;
+    }
+
+    RegExpProxy getRegExpProxy()
+    {
+        if (regExpProxy == null) {
+            Class cl = Kit.classOrNull(
+                          "org.mozilla.javascript.regexp.RegExpImpl");
+            if (cl != null) {
+                regExpProxy = (RegExpProxy)Kit.newInstanceOrNull(cl);
+            }
+        }
+        return regExpProxy;
+    }
+
+    final boolean isVersionECMA1()
+    {
+        return version == VERSION_DEFAULT || version >= VERSION_1_3;
+    }
+
+// The method must NOT be public or protected
+    SecurityController getSecurityController()
+    {
+        SecurityController global = SecurityController.global();
+        if (global != null) {
+            return global;
+        }
+        return securityController;
+    }
+
+    public final boolean isGeneratingDebugChanged()
+    {
+        return generatingDebugChanged;
+    }
+
+    /**
+     * Add a name to the list of names forcing the creation of real
+     * activation objects for functions.
+     *
+     * @param name the name of the object to add to the list
+     */
+    public void addActivationName(String name)
+    {
+        if (sealed) onSealedMutation();
+        if (activationNames == null)
+            activationNames = new Hashtable(5);
+        activationNames.put(name, name);
+    }
+
+    /**
+     * Check whether the name is in the list of names of objects
+     * forcing the creation of activation objects.
+     *
+     * @param name the name of the object to test
+     *
+     * @return true if an function activation object is needed.
+     */
+    public final boolean isActivationNeeded(String name)
+    {
+        return activationNames != null && activationNames.containsKey(name);
+    }
+
+    /**
+     * Remove a name from the list of names forcing the creation of real
+     * activation objects for functions.
+     *
+     * @param name the name of the object to remove from the list
+     */
+    public void removeActivationName(String name)
+    {
+        if (sealed) onSealedMutation();
+        if (activationNames != null)
+            activationNames.remove(name);
+    }
+
+    private static String implementationVersion;
+
+    private final ContextFactory factory;
+    private boolean sealed;
+    private Object sealKey;
+
+    Scriptable topCallScope;
+    NativeCall currentActivationCall;
+    XMLLib cachedXMLLib;
+
+    // for Objects, Arrays to tag themselves as being printed out,
+    // so they don't print themselves out recursively.
+    // Use ObjToIntMap instead of java.util.HashSet for JDK 1.1 compatibility
+    ObjToIntMap iterating;
+
+    Object interpreterSecurityDomain;
+
+    int version;
+
+    private SecurityController securityController;
+    private ClassShutter classShutter;
+    private ErrorReporter errorReporter;
+    RegExpProxy regExpProxy;
+    private Locale locale;
+    private boolean generatingDebug;
+    private boolean generatingDebugChanged;
+    private boolean generatingSource=true;
+    boolean compileFunctionsWithDynamicScopeFlag;
+    boolean useDynamicScope;
+    private int optimizationLevel;
+    private int maximumInterpreterStackDepth;
+    private WrapFactory wrapFactory;
+    Debugger debugger;
+    private Object debuggerData;
+    private int enterCount;
+    private Object propertyListeners;
+    private Hashtable hashtable;
+    private ClassLoader applicationClassLoader;
+
+    /**
+     * This is the list of names of objects forcing the creation of
+     * function activation records.
+     */
+    Hashtable activationNames;
+
+    // For the interpreter to store the last frame for error reports etc.
+    Object lastInterpreterFrame;
+
+    // For the interpreter to store information about previous invocations
+    // interpreter invocations
+    ObjArray previousInterpreterInvocations;
+
+    // For instruction counting (interpreter only)
+    int instructionCount;
+    int instructionThreshold;
+
+    // It can be used to return the second index-like result from function
+    int scratchIndex;
+
+    // It can be used to return the second uint32 result from function
+    long scratchUint32;
+
+    // It can be used to return the second Scriptable result from function
+    Scriptable scratchScriptable;
+
+    // Generate an observer count on compiled code
+	public boolean generateObserverCount = false;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextAction.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextAction.java
new file mode 100644
index 0000000..1c584a9
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextAction.java
@@ -0,0 +1,59 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * Interface to represent arbitrary action that requires to have Context
+ * object associated with the current thread for its execution.
+ */
+public interface ContextAction
+{
+    /**
+     * Execute action using the supplied Context instance.
+     * When Rhino runtime calls the method, <tt>cx</tt> will be associated
+     * with the current thread as active context.
+     *
+     * @see Context#call(ContextAction)
+     * @see ContextFactory#call(ContextAction)
+     */
+    public Object run(Context cx);
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextFactory.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextFactory.java
new file mode 100644
index 0000000..4f9fde2
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextFactory.java
@@ -0,0 +1,594 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * Factory class that Rhino runtime uses to create new {@link Context}
+ * instances.  A <code>ContextFactory</code> can also notify listeners
+ * about context creation and release.
+ * <p>
+ * When the Rhino runtime needs to create new {@link Context} instance during
+ * execution of {@link Context#enter()} or {@link Context}, it will call
+ * {@link #makeContext()} of the current global ContextFactory.
+ * See {@link #getGlobal()} and {@link #initGlobal(ContextFactory)}.
+ * <p>
+ * It is also possible to use explicit ContextFactory instances for Context
+ * creation. This is useful to have a set of independent Rhino runtime
+ * instances under single JVM. See {@link #call(ContextAction)}.
+ * <p>
+ * The following example demonstrates Context customization to terminate
+ * scripts running more then 10 seconds and to provide better compatibility
+ * with JavaScript code using MSIE-specific features.
+ * <pre>
+ * import org.mozilla.javascript.*;
+ *
+ * class MyFactory extends ContextFactory
+ * {
+ *
+ *     // Custom {@link Context} to store execution time.
+ *     private static class MyContext extends Context
+ *     {
+ *         long startTime;
+ *     }
+ *
+ *     static {
+ *         // Initialize GlobalFactory with custom factory
+ *         ContextFactory.initGlobal(new MyFactory());
+ *     }
+ *
+ *     // Override {@link #makeContext()}
+ *     protected Context makeContext()
+ *     {
+ *         MyContext cx = new MyContext();
+ *         // Use pure interpreter mode to allow for
+ *         // {@link #observeInstructionCount(Context, int)} to work
+ *         cx.setOptimizationLevel(-1);
+ *         // Make Rhino runtime to call observeInstructionCount
+ *         // each 10000 bytecode instructions
+ *         cx.setInstructionObserverThreshold(10000);
+ *         return cx;
+ *     }
+ *
+ *     // Override {@link #hasFeature(Context, int)}
+ *     public boolean hasFeature(Context cx, int featureIndex)
+ *     {
+ *         // Turn on maximum compatibility with MSIE scripts
+ *         switch (featureIndex) {
+ *             case {@link Context#FEATURE_NON_ECMA_GET_YEAR}:
+ *                 return true;
+ *
+ *             case {@link Context#FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME}:
+ *                 return true;
+ *
+ *             case {@link Context#FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER}:
+ *                 return true;
+ *
+ *             case {@link Context#FEATURE_PARENT_PROTO_PROPERTIES}:
+ *                 return false;
+ *         }
+ *         return super.hasFeature(cx, featureIndex);
+ *     }
+ *
+ *     // Override {@link #observeInstructionCount(Context, int)}
+ *     protected void observeInstructionCount(Context cx, int instructionCount)
+ *     {
+ *         MyContext mcx = (MyContext)cx;
+ *         long currentTime = System.currentTimeMillis();
+ *         if (currentTime - mcx.startTime > 10*1000) {
+ *             // More then 10 seconds from Context creation time:
+ *             // it is time to stop the script.
+ *             // Throw Error instance to ensure that script will never
+ *             // get control back through catch or finally.
+ *             throw new Error();
+ *         }
+ *     }
+ *
+ *     // Override {@link #doTopCall(Callable,
+                               Context, Scriptable,
+                               Scriptable, Object[])}
+ *     protected Object doTopCall(Callable callable,
+ *                                Context cx, Scriptable scope,
+ *                                Scriptable thisObj, Object[] args)
+ *     {
+ *         MyContext mcx = (MyContext)cx;
+ *         mcx.startTime = System.currentTimeMillis();
+ *
+ *         return super.doTopCall(callable, cx, scope, thisObj, args);
+ *     }
+ *
+ * }
+ *
+ * </pre>
+ */
+
+public class ContextFactory
+{
+    private static volatile boolean hasCustomGlobal;
+    private static ContextFactory global = new ContextFactory();
+
+    private volatile boolean sealed;
+
+    private final Object listenersLock = new Object();
+    private volatile Object listeners;
+    private boolean disabledListening;
+    private ClassLoader applicationClassLoader;
+
+    /**
+     * Listener of {@link Context} creation and release events.
+     */
+    public interface Listener
+    {
+        /**
+         * Notify about newly created {@link Context} object.
+         */
+        public void contextCreated(Context cx);
+
+        /**
+         * Notify that the specified {@link Context} instance is no longer
+         * associated with the current thread.
+         */
+        public void contextReleased(Context cx);
+    }
+
+    /**
+     * Get global ContextFactory.
+     *
+     * @see #hasExplicitGlobal()
+     * @see #initGlobal(ContextFactory)
+     */
+    public static ContextFactory getGlobal()
+    {
+        return global;
+    }
+
+    /**
+     * Check if global factory was set.
+     * Return true to indicate that {@link #initGlobal(ContextFactory)} was
+     * already called and false to indicate that the global factory was not
+     * explicitly set.
+     *
+     * @see #getGlobal()
+     * @see #initGlobal(ContextFactory)
+     */
+    public static boolean hasExplicitGlobal()
+    {
+        return hasCustomGlobal;
+    }
+
+    /**
+     * Set global ContextFactory.
+     * The method can only be called once.
+     *
+     * @see #getGlobal()
+     * @see #hasExplicitGlobal()
+     */
+    public synchronized static void initGlobal(ContextFactory factory)
+    {
+        if (factory == null) {
+            throw new IllegalArgumentException();
+        }
+        if (hasCustomGlobal) {
+            throw new IllegalStateException();
+        }
+        hasCustomGlobal = true;
+        global = factory;
+    }
+
+    /**
+     * Create new {@link Context} instance to be associated with the current
+     * thread.
+     * This is a callback method used by Rhino to create {@link Context}
+     * instance when it is necessary to associate one with the current
+     * execution thread. <tt>makeContext()</tt> is allowed to call
+     * {@link Context#seal(Object)} on the result to prevent
+     * {@link Context} changes by hostile scripts or applets.
+     */
+    protected Context makeContext()
+    {
+        return new Context(this);
+    }
+
+    /**
+     * Implementation of {@link Context#hasFeature(int featureIndex)}.
+     * This can be used to customize {@link Context} without introducing
+     * additional subclasses.
+     */
+    protected boolean hasFeature(Context cx, int featureIndex)
+    {
+        int version;
+        switch (featureIndex) {
+          case Context.FEATURE_NON_ECMA_GET_YEAR:
+           /*
+            * During the great date rewrite of 1.3, we tried to track the
+            * evolving ECMA standard, which then had a definition of
+            * getYear which always subtracted 1900.  Which we
+            * implemented, not realizing that it was incompatible with
+            * the old behavior...  now, rather than thrash the behavior
+            * yet again, we've decided to leave it with the - 1900
+            * behavior and point people to the getFullYear method.  But
+            * we try to protect existing scripts that have specified a
+            * version...
+            */
+            version = cx.getLanguageVersion();
+            return (version == Context.VERSION_1_0
+                    || version == Context.VERSION_1_1
+                    || version == Context.VERSION_1_2);
+
+          case Context.FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME:
+            return false;
+
+          case Context.FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER:
+            return false;
+
+          case Context.FEATURE_TO_STRING_AS_SOURCE:
+            version = cx.getLanguageVersion();
+            return version == Context.VERSION_1_2;
+
+          case Context.FEATURE_PARENT_PROTO_PROPERTIES:
+            return true;
+
+          case Context.FEATURE_E4X:
+            version = cx.getLanguageVersion();
+            return (version == Context.VERSION_DEFAULT
+                    || version >= Context.VERSION_1_6);
+
+          case Context.FEATURE_DYNAMIC_SCOPE:
+            return false;
+
+          case Context.FEATURE_STRICT_VARS:
+            return false;
+
+          case Context.FEATURE_STRICT_EVAL:
+            return false;
+
+          case Context.FEATURE_LOCATION_INFORMATION_IN_ERROR:
+            return false;
+
+          case Context.FEATURE_STRICT_MODE:
+            return false;
+
+          case Context.FEATURE_WARNING_AS_ERROR:
+            return false;
+
+          case Context.FEATURE_ENHANCED_JAVA_ACCESS:
+            return false;
+        }
+        // It is a bug to call the method with unknown featureIndex
+        throw new IllegalArgumentException(String.valueOf(featureIndex));
+    }
+
+    private boolean isDom3Present() {
+        Class nodeClass = Kit.classOrNull("org.w3c.dom.Node");
+        if (nodeClass == null) return false;
+        // Check to see whether DOM3 is present; use a new method defined in
+        // DOM3 that is vital to our implementation
+        try {
+            nodeClass.getMethod("getUserData", new Class[] { String.class });
+            return true;
+        } catch (NoSuchMethodException e) {
+            return false;
+        }
+    }
+
+    /**
+     * Provides a default
+     * {@link org.mozilla.javascript.xml.XMLLib.Factory XMLLib.Factory}
+     * to be used by the <code>Context</code> instances produced by this
+     * factory. See {@link Context#getE4xImplementationFactory} for details.
+     * 
+     * May return null, in which case E4X functionality is not supported in
+     * Rhino.
+     * 
+     * The default implementation now prefers the DOM3 E4X implementation.
+     */
+    protected org.mozilla.javascript.xml.XMLLib.Factory
+        getE4xImplementationFactory()
+    {
+        // Must provide default implementation, rather than abstract method,
+        // so that past implementors of ContextFactory do not fail at runtime
+        // upon invocation of this method.
+        // Note that the default implementation returns null if we
+        // neither have XMLBeans nor a DOM3 implementation present.
+
+        if (isDom3Present()) {
+            return org.mozilla.javascript.xml.XMLLib.Factory.create(
+                "org.mozilla.javascript.xmlimpl.XMLLibImpl"
+            );
+        } else if (Kit.classOrNull("org.apache.xmlbeans.XmlCursor") != null) {
+            return org.mozilla.javascript.xml.XMLLib.Factory.create(
+                "org.mozilla.javascript.xml.impl.xmlbeans.XMLLibImpl"
+            );
+        } else {
+            return null;
+        }
+    }
+
+
+    /**
+     * Create class loader for generated classes.
+     * This method creates an instance of the default implementation
+     * of {@link GeneratedClassLoader}. Rhino uses this interface to load
+     * generated JVM classes when no {@link SecurityController}
+     * is installed.
+     * Application can override the method to provide custom class loading.
+     */
+    protected GeneratedClassLoader createClassLoader(ClassLoader parent)
+    {
+        return new DefiningClassLoader(parent);
+    }
+
+    /**
+     * Get ClassLoader to use when searching for Java classes.
+     * Unless it was explicitly initialized with
+     * {@link #initApplicationClassLoader(ClassLoader)} the method returns
+     * null to indicate that Thread.getContextClassLoader() should be used.
+     */
+    public final ClassLoader getApplicationClassLoader()
+    {
+        return applicationClassLoader;
+    }
+
+    /**
+     * Set explicit class loader to use when searching for Java classes.
+     *
+     * @see #getApplicationClassLoader()
+     */
+    public final void initApplicationClassLoader(ClassLoader loader)
+    {
+        if (loader == null)
+            throw new IllegalArgumentException("loader is null");
+        if (!Kit.testIfCanLoadRhinoClasses(loader))
+            throw new IllegalArgumentException(
+                "Loader can not resolve Rhino classes");
+
+        if (this.applicationClassLoader != null)
+            throw new IllegalStateException(
+                "applicationClassLoader can only be set once");
+        checkNotSealed();
+
+        this.applicationClassLoader = loader;
+    }
+
+    /**
+     * Execute top call to script or function.
+     * When the runtime is about to execute a script or function that will
+     * create the first stack frame with scriptable code, it calls this method
+     * to perform the real call. In this way execution of any script
+     * happens inside this function.
+     */
+    protected Object doTopCall(Callable callable,
+                               Context cx, Scriptable scope,
+                               Scriptable thisObj, Object[] args)
+    {
+        return callable.call(cx, scope, thisObj, args);
+    }
+
+    /**
+     * Implementation of
+     * {@link Context#observeInstructionCount(int instructionCount)}.
+     * This can be used to customize {@link Context} without introducing
+     * additional subclasses.
+     */
+    protected void observeInstructionCount(Context cx, int instructionCount)
+    {
+    }
+
+    protected void onContextCreated(Context cx)
+    {
+        Object listeners = this.listeners;
+        for (int i = 0; ; ++i) {
+            Listener l = (Listener)Kit.getListener(listeners, i);
+            if (l == null)
+                break;
+            l.contextCreated(cx);
+        }
+    }
+
+    protected void onContextReleased(Context cx)
+    {
+        Object listeners = this.listeners;
+        for (int i = 0; ; ++i) {
+            Listener l = (Listener)Kit.getListener(listeners, i);
+            if (l == null)
+                break;
+            l.contextReleased(cx);
+        }
+    }
+
+    public final void addListener(Listener listener)
+    {
+        checkNotSealed();
+        synchronized (listenersLock) {
+            if (disabledListening) {
+                throw new IllegalStateException();
+            }
+            listeners = Kit.addListener(listeners, listener);
+        }
+    }
+
+    public final void removeListener(Listener listener)
+    {
+        checkNotSealed();
+        synchronized (listenersLock) {
+            if (disabledListening) {
+                throw new IllegalStateException();
+            }
+            listeners = Kit.removeListener(listeners, listener);
+        }
+    }
+
+    /**
+     * The method is used only to implement
+     * Context.disableStaticContextListening()
+     */
+    final void disableContextListening()
+    {
+        checkNotSealed();
+        synchronized (listenersLock) {
+            disabledListening = true;
+            listeners = null;
+        }
+    }
+
+    /**
+     * Checks if this is a sealed ContextFactory.
+     * @see #seal()
+     */
+    public final boolean isSealed()
+    {
+        return sealed;
+    }
+
+    /**
+     * Seal this ContextFactory so any attempt to modify it like to add or
+     * remove its listeners will throw an exception.
+     * @see #isSealed()
+     */
+    public final void seal()
+    {
+        checkNotSealed();
+        sealed = true;
+    }
+
+    protected final void checkNotSealed()
+    {
+        if (sealed) throw new IllegalStateException();
+    }
+
+    /**
+     * Call {@link ContextAction#run(Context cx)}
+     * using the {@link Context} instance associated with the current thread.
+     * If no Context is associated with the thread, then
+     * {@link #makeContext()} will be called to construct
+     * new Context instance. The instance will be temporary associated
+     * with the thread during call to {@link ContextAction#run(Context)}.
+     *
+     * @see ContextFactory#call(ContextAction)
+     * @see Context#call(ContextFactory factory, Callable callable,
+     *                   Scriptable scope, Scriptable thisObj,
+     *                   Object[] args)
+     */
+    public final Object call(ContextAction action)
+    {
+        return Context.call(this, action);
+    }
+
+    /**
+     * Get a context associated with the current thread, creating one if need 
+     * be. The Context stores the execution state of the JavaScript engine, so 
+     * it is required that the context be entered before execution may begin. 
+     * Once a thread has entered a Context, then getCurrentContext() may be 
+     * called to find the context that is associated with the current thread.
+     * <p>
+     * Calling <code>enterContext()</code> will return either the Context 
+     * currently associated with the thread, or will create a new context and 
+     * associate it with the current thread. Each call to 
+     * <code>enterContext()</code> must have a matching call to 
+     * {@link Context#exit()}.
+     * <pre>
+     *      Context cx = contextFactory.enterContext();
+     *      try {
+     *          ...
+     *          cx.evaluateString(...);
+     *      } finally {
+     *          Context.exit();
+     *      }
+     * </pre>
+     * Instead of using <tt>enterContext()</tt>, <tt>exit()</tt> pair consider 
+     * using {@link #call(ContextAction)} which guarantees proper association 
+     * of Context instances with the current thread.
+     * With this method the above example becomes:
+     * <pre>
+     *      ContextFactory.call(new ContextAction() {
+     *          public Object run(Context cx) {
+     *              ...
+     *              cx.evaluateString(...);
+     *              return null;
+     *          }
+     *      });
+     * </pre>
+     * @return a Context associated with the current thread
+     * @see Context#getCurrentContext()
+     * @see Context#exit()
+     * @see #call(ContextAction)
+     */
+    public Context enterContext()
+    {
+        return enterContext(null);
+    }
+    
+    /**
+     * @deprecated use {@link #enterContext()} instead
+     * @return a Context associated with the current thread
+     */
+    public final Context enter()
+    {
+        return enterContext(null);
+    }
+
+    /**
+     * @deprecated Use {@link Context#exit()} instead.
+     */
+    public final void exit()
+    {
+        Context.exit();
+    }
+
+    /**
+     * Get a Context associated with the current thread, using the given 
+     * Context if need be.
+     * <p>
+     * The same as <code>enterContext()</code> except that <code>cx</code>
+     * is associated with the current thread and returned if the current thread
+     * has no associated context and <code>cx</code> is not associated with any
+     * other thread.
+     * @param cx a Context to associate with the thread if possible
+     * @return a Context associated with the current thread
+     * @see #enterContext()
+     * @see #call(ContextAction)
+     * @throws IllegalStateException if <code>cx</code> is already associated
+     * with a different thread
+     */
+    public final Context enterContext(Context cx)
+    {
+        return Context.enter(cx, this);
+    }
+}
\ No newline at end of file
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextListener.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextListener.java
new file mode 100644
index 0000000..5e17145
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ContextListener.java
@@ -0,0 +1,60 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * @deprecated Embeddings that wish to customize newly created
+ * {@link Context} instances should implement
+ * {@link ContextFactory.Listener}.
+ */
+public interface ContextListener extends ContextFactory.Listener
+{
+
+    /**
+     * @deprecated Rhino runtime never calls the method.
+     */
+    public void contextEntered(Context cx);
+
+    /**
+     * @deprecated Rhino runtime never calls the method.
+     */
+    public void contextExited(Context cx);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DToA.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DToA.java
new file mode 100644
index 0000000..ad2a68a
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DToA.java
@@ -0,0 +1,1271 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Waldemar Horwat
+ *   Roger Lawrence
+ *   Attila Szegedi
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/****************************************************************
+  *
+  * The author of this software is David M. Gay.
+  *
+  * Copyright (c) 1991, 2000, 2001 by Lucent Technologies.
+  *
+  * Permission to use, copy, modify, and distribute this software for any
+  * purpose without fee is hereby granted, provided that this entire notice
+  * is included in all copies of any software which is or includes a copy
+  * or modification of this software and in all copies of the supporting
+  * documentation for such software.
+  *
+  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+  * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHOR NOR LUCENT MAKES ANY
+  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+  * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+  *
+  ***************************************************************/
+
+package org.mozilla.javascript;
+
+import java.math.BigInteger;
+
+class DToA {
+
+
+/* "-0.0000...(1073 zeros after decimal point)...0001\0" is the longest string that we could produce,
+ * which occurs when printing -5e-324 in binary.  We could compute a better estimate of the size of
+ * the output string and malloc fewer bytes depending on d and base, but why bother? */
+
+    private static final int DTOBASESTR_BUFFER_SIZE = 1078;
+
+    private static char BASEDIGIT(int digit) {
+        return (char)((digit >= 10) ? 'a' - 10 + digit : '0' + digit);
+    }
+
+    static final int
+        DTOSTR_STANDARD = 0,              /* Either fixed or exponential format; round-trip */
+        DTOSTR_STANDARD_EXPONENTIAL = 1,  /* Always exponential format; round-trip */
+        DTOSTR_FIXED = 2,                 /* Round to <precision> digits after the decimal point; exponential if number is large */
+        DTOSTR_EXPONENTIAL = 3,           /* Always exponential format; <precision> significant digits */
+        DTOSTR_PRECISION = 4;             /* Either fixed or exponential format; <precision> significant digits */
+
+
+    private static final int Frac_mask = 0xfffff;
+    private static final int Exp_shift = 20;
+    private static final int Exp_msk1 = 0x100000;
+
+    private static final long Frac_maskL = 0xfffffffffffffL;
+    private static final int Exp_shiftL = 52;
+    private static final long Exp_msk1L = 0x10000000000000L;
+
+    private static final int Bias = 1023;
+    private static final int P = 53;
+
+    private static final int Exp_shift1 = 20;
+    private static final int Exp_mask  = 0x7ff00000;
+    private static final int Exp_mask_shifted = 0x7ff;
+    private static final int Bndry_mask  = 0xfffff;
+    private static final int Log2P = 1;
+
+    private static final int Sign_bit = 0x80000000;
+    private static final int Exp_11  = 0x3ff00000;
+    private static final int Ten_pmax = 22;
+    private static final int Quick_max = 14;
+    private static final int Bletch = 0x10;
+    private static final int Frac_mask1 = 0xfffff;
+    private static final int Int_max = 14;
+    private static final int n_bigtens = 5;
+
+
+    private static final double tens[] = {
+        1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
+        1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
+        1e20, 1e21, 1e22
+    };
+
+    private static final double bigtens[] = { 1e16, 1e32, 1e64, 1e128, 1e256 };
+
+    private static int lo0bits(int y)
+    {
+        int k;
+        int x = y;
+
+        if ((x & 7) != 0) {
+            if ((x & 1) != 0)
+                return 0;
+            if ((x & 2) != 0) {
+                return 1;
+            }
+            return 2;
+        }
+        k = 0;
+        if ((x & 0xffff) == 0) {
+            k = 16;
+            x >>>= 16;
+        }
+        if ((x & 0xff) == 0) {
+            k += 8;
+            x >>>= 8;
+        }
+        if ((x & 0xf) == 0) {
+            k += 4;
+            x >>>= 4;
+        }
+        if ((x & 0x3) == 0) {
+            k += 2;
+            x >>>= 2;
+        }
+        if ((x & 1) == 0) {
+            k++;
+            x >>>= 1;
+            if ((x & 1) == 0)
+                return 32;
+        }
+        return k;
+    }
+
+    /* Return the number (0 through 32) of most significant zero bits in x. */
+    private static int hi0bits(int x)
+    {
+        int k = 0;
+
+        if ((x & 0xffff0000) == 0) {
+            k = 16;
+            x <<= 16;
+        }
+        if ((x & 0xff000000) == 0) {
+            k += 8;
+            x <<= 8;
+        }
+        if ((x & 0xf0000000) == 0) {
+            k += 4;
+            x <<= 4;
+        }
+        if ((x & 0xc0000000) == 0) {
+            k += 2;
+            x <<= 2;
+        }
+        if ((x & 0x80000000) == 0) {
+            k++;
+            if ((x & 0x40000000) == 0)
+                return 32;
+        }
+        return k;
+    }
+
+    private static void stuffBits(byte bits[], int offset, int val)
+    {
+        bits[offset] = (byte)(val >> 24);
+        bits[offset + 1] = (byte)(val >> 16);
+        bits[offset + 2] = (byte)(val >> 8);
+        bits[offset + 3] = (byte)(val);
+    }
+
+    /* Convert d into the form b*2^e, where b is an odd integer.  b is the returned
+     * Bigint and e is the returned binary exponent.  Return the number of significant
+     * bits in b in bits.  d must be finite and nonzero. */
+    private static BigInteger d2b(double d, int[] e, int[] bits)
+    {
+        byte dbl_bits[];
+        int i, k, y, z, de;
+        long dBits = Double.doubleToLongBits(d);
+        int d0 = (int)(dBits >>> 32);
+        int d1 = (int)(dBits);
+
+        z = d0 & Frac_mask;
+        d0 &= 0x7fffffff;   /* clear sign bit, which we ignore */
+
+        if ((de = (d0 >>> Exp_shift)) != 0)
+            z |= Exp_msk1;
+
+        if ((y = d1) != 0) {
+            dbl_bits = new byte[8];
+            k = lo0bits(y);
+            y >>>= k;
+            if (k != 0) {
+                stuffBits(dbl_bits, 4, y | z << (32 - k));
+                z >>= k;
+            }
+            else
+                stuffBits(dbl_bits, 4, y);
+            stuffBits(dbl_bits, 0, z);
+            i = (z != 0) ? 2 : 1;
+        }
+        else {
+    //        JS_ASSERT(z);
+            dbl_bits = new byte[4];
+            k = lo0bits(z);
+            z >>>= k;
+            stuffBits(dbl_bits, 0, z);
+            k += 32;
+            i = 1;
+        }
+        if (de != 0) {
+            e[0] = de - Bias - (P-1) + k;
+            bits[0] = P - k;
+        }
+        else {
+            e[0] = de - Bias - (P-1) + 1 + k;
+            bits[0] = 32*i - hi0bits(z);
+        }
+        return new BigInteger(dbl_bits);
+    }
+
+    static String JS_dtobasestr(int base, double d)
+    {
+        if (!(2 <= base && base <= 36))
+            throw new IllegalArgumentException("Bad base: "+base);
+
+        /* Check for Infinity and NaN */
+        if (Double.isNaN(d)) {
+            return "NaN";
+        } else if (Double.isInfinite(d)) {
+            return (d > 0.0) ? "Infinity" : "-Infinity";
+        } else if (d == 0) {
+            // ALERT: should it distinguish -0.0 from +0.0 ?
+            return "0";
+        }
+
+        boolean negative;
+        if (d >= 0.0) {
+            negative = false;
+        } else {
+            negative = true;
+            d = -d;
+        }
+
+        /* Get the integer part of d including '-' sign. */
+        String intDigits;
+
+        double dfloor = Math.floor(d);
+        long lfloor = (long)dfloor;
+        if (lfloor == dfloor) {
+            // int part fits long
+            intDigits = Long.toString((negative) ? -lfloor : lfloor, base);
+        } else {
+            // BigInteger should be used
+            long floorBits = Double.doubleToLongBits(dfloor);
+            int exp = (int)(floorBits >> Exp_shiftL) & Exp_mask_shifted;
+            long mantissa;
+            if (exp == 0) {
+                mantissa = (floorBits & Frac_maskL) << 1;
+            } else {
+                mantissa = (floorBits & Frac_maskL) | Exp_msk1L;
+            }
+            if (negative) {
+                mantissa = -mantissa;
+            }
+            exp -= 1075;
+            BigInteger x = BigInteger.valueOf(mantissa);
+            if (exp > 0) {
+                x = x.shiftLeft(exp);
+            } else if (exp < 0) {
+                x = x.shiftRight(-exp);
+            }
+            intDigits = x.toString(base);
+        }
+
+        if (d == dfloor) {
+            // No fraction part
+            return intDigits;
+        } else {
+            /* We have a fraction. */
+
+            char[] buffer;       /* The output string */
+            int p;               /* index to current position in the buffer */
+            int digit;
+            double df;           /* The fractional part of d */
+            BigInteger b;
+
+            buffer = new char[DTOBASESTR_BUFFER_SIZE];
+            p = 0;
+            df = d - dfloor;
+
+            long dBits = Double.doubleToLongBits(d);
+            int word0 = (int)(dBits >> 32);
+            int word1 = (int)(dBits);
+
+            int[] e = new int[1];
+            int[] bbits = new int[1];
+
+            b = d2b(df, e, bbits);
+//            JS_ASSERT(e < 0);
+            /* At this point df = b * 2^e.  e must be less than zero because 0 < df < 1. */
+
+            int s2 = -(word0 >>> Exp_shift1 & Exp_mask >> Exp_shift1);
+            if (s2 == 0)
+                s2 = -1;
+            s2 += Bias + P;
+            /* 1/2^s2 = (nextDouble(d) - d)/2 */
+//            JS_ASSERT(-s2 < e);
+            BigInteger mlo = BigInteger.valueOf(1);
+            BigInteger mhi = mlo;
+            if ((word1 == 0) && ((word0 & Bndry_mask) == 0)
+                && ((word0 & (Exp_mask & Exp_mask << 1)) != 0)) {
+                /* The special case.  Here we want to be within a quarter of the last input
+                   significant digit instead of one half of it when the output string's value is less than d.  */
+                s2 += Log2P;
+                mhi = BigInteger.valueOf(1<<Log2P);
+            }
+
+            b = b.shiftLeft(e[0] + s2);
+            BigInteger s = BigInteger.valueOf(1);
+            s = s.shiftLeft(s2);
+            /* At this point we have the following:
+             *   s = 2^s2;
+             *   1 > df = b/2^s2 > 0;
+             *   (d - prevDouble(d))/2 = mlo/2^s2;
+             *   (nextDouble(d) - d)/2 = mhi/2^s2. */
+            BigInteger bigBase = BigInteger.valueOf(base);
+
+            boolean done = false;
+            do {
+                b = b.multiply(bigBase);
+                BigInteger[] divResult = b.divideAndRemainder(s);
+                b = divResult[1];
+                digit = (char)(divResult[0].intValue());
+                if (mlo == mhi)
+                    mlo = mhi = mlo.multiply(bigBase);
+                else {
+                    mlo = mlo.multiply(bigBase);
+                    mhi = mhi.multiply(bigBase);
+                }
+
+                /* Do we yet have the shortest string that will round to d? */
+                int j = b.compareTo(mlo);
+                /* j is b/2^s2 compared with mlo/2^s2. */
+                BigInteger delta = s.subtract(mhi);
+                int j1 = (delta.signum() <= 0) ? 1 : b.compareTo(delta);
+                /* j1 is b/2^s2 compared with 1 - mhi/2^s2. */
+                if (j1 == 0 && ((word1 & 1) == 0)) {
+                    if (j > 0)
+                        digit++;
+                    done = true;
+                } else
+                if (j < 0 || (j == 0 && ((word1 & 1) == 0))) {
+                    if (j1 > 0) {
+                        /* Either dig or dig+1 would work here as the least significant digit.
+                           Use whichever would produce an output value closer to d. */
+                        b = b.shiftLeft(1);
+                        j1 = b.compareTo(s);
+                        if (j1 > 0) /* The even test (|| (j1 == 0 && (digit & 1))) is not here because it messes up odd base output
+                                     * such as 3.5 in base 3.  */
+                            digit++;
+                    }
+                    done = true;
+                } else if (j1 > 0) {
+                    digit++;
+                    done = true;
+                }
+//                JS_ASSERT(digit < (uint32)base);
+                buffer[p++] = BASEDIGIT(digit);
+            } while (!done);
+
+            StringBuffer sb = new StringBuffer(intDigits.length() + 1 + p);
+            sb.append(intDigits);
+            sb.append('.');
+            sb.append(buffer, 0, p);
+            return sb.toString();
+        }
+
+    }
+
+    /* dtoa for IEEE arithmetic (dmg): convert double to ASCII string.
+     *
+     * Inspired by "How to Print Floating-Point Numbers Accurately" by
+     * Guy L. Steele, Jr. and Jon L. White [Proc. ACM SIGPLAN '90, pp. 92-101].
+     *
+     * Modifications:
+     *  1. Rather than iterating, we use a simple numeric overestimate
+     *     to determine k = floor(log10(d)).  We scale relevant
+     *     quantities using O(log2(k)) rather than O(k) multiplications.
+     *  2. For some modes > 2 (corresponding to ecvt and fcvt), we don't
+     *     try to generate digits strictly left to right.  Instead, we
+     *     compute with fewer bits and propagate the carry if necessary
+     *     when rounding the final digit up.  This is often faster.
+     *  3. Under the assumption that input will be rounded nearest,
+     *     mode 0 renders 1e23 as 1e23 rather than 9.999999999999999e22.
+     *     That is, we allow equality in stopping tests when the
+     *     round-nearest rule will give the same floating-point value
+     *     as would satisfaction of the stopping test with strict
+     *     inequality.
+     *  4. We remove common factors of powers of 2 from relevant
+     *     quantities.
+     *  5. When converting floating-point integers less than 1e16,
+     *     we use floating-point arithmetic rather than resorting
+     *     to multiple-precision integers.
+     *  6. When asked to produce fewer than 15 digits, we first try
+     *     to get by with floating-point arithmetic; we resort to
+     *     multiple-precision integer arithmetic only if we cannot
+     *     guarantee that the floating-point calculation has given
+     *     the correctly rounded result.  For k requested digits and
+     *     "uniformly" distributed input, the probability is
+     *     something like 10^(k-15) that we must resort to the Long
+     *     calculation.
+     */
+
+    static int word0(double d)
+    {
+        long dBits = Double.doubleToLongBits(d);
+        return (int)(dBits >> 32);
+    }
+
+    static double setWord0(double d, int i)
+    {
+        long dBits = Double.doubleToLongBits(d);
+        dBits = ((long)i << 32) | (dBits & 0x0FFFFFFFFL);
+        return Double.longBitsToDouble(dBits);
+    }
+
+    static int word1(double d)
+    {
+        long dBits = Double.doubleToLongBits(d);
+        return (int)(dBits);
+    }
+
+    /* Return b * 5^k.  k must be nonnegative. */
+    // XXXX the C version built a cache of these
+    static BigInteger pow5mult(BigInteger b, int k)
+    {
+        return b.multiply(BigInteger.valueOf(5).pow(k));
+    }
+
+    static boolean roundOff(StringBuffer buf)
+    {
+        int i = buf.length();
+        while (i != 0) {
+            --i;
+            char c = buf.charAt(i);
+            if (c != '9') {
+                buf.setCharAt(i, (char)(c + 1));
+                buf.setLength(i + 1);
+                return false;
+            }
+        }
+        buf.setLength(0);
+        return true;
+    }
+
+    /* Always emits at least one digit. */
+    /* If biasUp is set, then rounding in modes 2 and 3 will round away from zero
+     * when the number is exactly halfway between two representable values.  For example,
+     * rounding 2.5 to zero digits after the decimal point will return 3 and not 2.
+     * 2.49 will still round to 2, and 2.51 will still round to 3. */
+    /* bufsize should be at least 20 for modes 0 and 1.  For the other modes,
+     * bufsize should be two greater than the maximum number of output characters expected. */
+    static int
+    JS_dtoa(double d, int mode, boolean biasUp, int ndigits,
+                    boolean[] sign, StringBuffer buf)
+    {
+        /*  Arguments ndigits, decpt, sign are similar to those
+            of ecvt and fcvt; trailing zeros are suppressed from
+            the returned string.  If not null, *rve is set to point
+            to the end of the return value.  If d is +-Infinity or NaN,
+            then *decpt is set to 9999.
+
+            mode:
+            0 ==> shortest string that yields d when read in
+            and rounded to nearest.
+            1 ==> like 0, but with Steele & White stopping rule;
+            e.g. with IEEE P754 arithmetic , mode 0 gives
+            1e23 whereas mode 1 gives 9.999999999999999e22.
+            2 ==> max(1,ndigits) significant digits.  This gives a
+            return value similar to that of ecvt, except
+            that trailing zeros are suppressed.
+            3 ==> through ndigits past the decimal point.  This
+            gives a return value similar to that from fcvt,
+            except that trailing zeros are suppressed, and
+            ndigits can be negative.
+            4-9 should give the same return values as 2-3, i.e.,
+            4 <= mode <= 9 ==> same return as mode
+            2 + (mode & 1).  These modes are mainly for
+            debugging; often they run slower but sometimes
+            faster than modes 2-3.
+            4,5,8,9 ==> left-to-right digit generation.
+            6-9 ==> don't try fast floating-point estimate
+            (if applicable).
+
+            Values of mode other than 0-9 are treated as mode 0.
+
+            Sufficient space is allocated to the return value
+            to hold the suppressed trailing zeros.
+        */
+
+        int b2, b5, i, ieps, ilim, ilim0, ilim1,
+            j, j1, k, k0, m2, m5, s2, s5;
+        char dig;
+        long L;
+        long x;
+        BigInteger b, b1, delta, mlo, mhi, S;
+        int[] be = new int[1];
+        int[] bbits = new int[1];
+        double d2, ds, eps;
+        boolean spec_case, denorm, k_check, try_quick, leftright;
+
+        if ((word0(d) & Sign_bit) != 0) {
+            /* set sign for everything, including 0's and NaNs */
+            sign[0] = true;
+            // word0(d) &= ~Sign_bit;  /* clear sign bit */
+            d = setWord0(d, word0(d) & ~Sign_bit);
+        }
+        else
+            sign[0] = false;
+
+        if ((word0(d) & Exp_mask) == Exp_mask) {
+            /* Infinity or NaN */
+            buf.append(((word1(d) == 0) && ((word0(d) & Frac_mask) == 0)) ? "Infinity" : "NaN");
+            return 9999;
+        }
+        if (d == 0) {
+//          no_digits:
+            buf.setLength(0);
+            buf.append('0');        /* copy "0" to buffer */
+            return 1;
+        }
+
+        b = d2b(d, be, bbits);
+        if ((i = (word0(d) >>> Exp_shift1 & (Exp_mask>>Exp_shift1))) != 0) {
+            d2 = setWord0(d, (word0(d) & Frac_mask1) | Exp_11);
+            /* log(x)   ~=~ log(1.5) + (x-1.5)/1.5
+             * log10(x)  =  log(x) / log(10)
+             *      ~=~ log(1.5)/log(10) + (x-1.5)/(1.5*log(10))
+             * log10(d) = (i-Bias)*log(2)/log(10) + log10(d2)
+             *
+             * This suggests computing an approximation k to log10(d) by
+             *
+             * k = (i - Bias)*0.301029995663981
+             *  + ( (d2-1.5)*0.289529654602168 + 0.176091259055681 );
+             *
+             * We want k to be too large rather than too small.
+             * The error in the first-order Taylor series approximation
+             * is in our favor, so we just round up the constant enough
+             * to compensate for any error in the multiplication of
+             * (i - Bias) by 0.301029995663981; since |i - Bias| <= 1077,
+             * and 1077 * 0.30103 * 2^-52 ~=~ 7.2e-14,
+             * adding 1e-13 to the constant term more than suffices.
+             * Hence we adjust the constant term to 0.1760912590558.
+             * (We could get a more accurate k by invoking log10,
+             *  but this is probably not worthwhile.)
+             */
+            i -= Bias;
+            denorm = false;
+        }
+        else {
+            /* d is denormalized */
+            i = bbits[0] + be[0] + (Bias + (P-1) - 1);
+            x = (i > 32) ? word0(d) << (64 - i) | word1(d) >>> (i - 32) : word1(d) << (32 - i);
+//            d2 = x;
+//            word0(d2) -= 31*Exp_msk1; /* adjust exponent */
+            d2 = setWord0(x, word0(x) - 31*Exp_msk1);
+            i -= (Bias + (P-1) - 1) + 1;
+            denorm = true;
+        }
+        /* At this point d = f*2^i, where 1 <= f < 2.  d2 is an approximation of f. */
+        ds = (d2-1.5)*0.289529654602168 + 0.1760912590558 + i*0.301029995663981;
+        k = (int)ds;
+        if (ds < 0.0 && ds != k)
+            k--;    /* want k = floor(ds) */
+        k_check = true;
+        if (k >= 0 && k <= Ten_pmax) {
+            if (d < tens[k])
+                k--;
+            k_check = false;
+        }
+        /* At this point floor(log10(d)) <= k <= floor(log10(d))+1.
+           If k_check is zero, we're guaranteed that k = floor(log10(d)). */
+        j = bbits[0] - i - 1;
+        /* At this point d = b/2^j, where b is an odd integer. */
+        if (j >= 0) {
+            b2 = 0;
+            s2 = j;
+        }
+        else {
+            b2 = -j;
+            s2 = 0;
+        }
+        if (k >= 0) {
+            b5 = 0;
+            s5 = k;
+            s2 += k;
+        }
+        else {
+            b2 -= k;
+            b5 = -k;
+            s5 = 0;
+        }
+        /* At this point d/10^k = (b * 2^b2 * 5^b5) / (2^s2 * 5^s5), where b is an odd integer,
+           b2 >= 0, b5 >= 0, s2 >= 0, and s5 >= 0. */
+        if (mode < 0 || mode > 9)
+            mode = 0;
+        try_quick = true;
+        if (mode > 5) {
+            mode -= 4;
+            try_quick = false;
+        }
+        leftright = true;
+        ilim = ilim1 = 0;
+        switch(mode) {
+            case 0:
+            case 1:
+                ilim = ilim1 = -1;
+                i = 18;
+                ndigits = 0;
+                break;
+            case 2:
+                leftright = false;
+                /* no break */
+            case 4:
+                if (ndigits <= 0)
+                    ndigits = 1;
+                ilim = ilim1 = i = ndigits;
+                break;
+            case 3:
+                leftright = false;
+                /* no break */
+            case 5:
+                i = ndigits + k + 1;
+                ilim = i;
+                ilim1 = i - 1;
+                if (i <= 0)
+                    i = 1;
+        }
+        /* ilim is the maximum number of significant digits we want, based on k and ndigits. */
+        /* ilim1 is the maximum number of significant digits we want, based on k and ndigits,
+           when it turns out that k was computed too high by one. */
+
+        boolean fast_failed = false;
+        if (ilim >= 0 && ilim <= Quick_max && try_quick) {
+
+            /* Try to get by with floating-point arithmetic. */
+
+            i = 0;
+            d2 = d;
+            k0 = k;
+            ilim0 = ilim;
+            ieps = 2; /* conservative */
+            /* Divide d by 10^k, keeping track of the roundoff error and avoiding overflows. */
+            if (k > 0) {
+                ds = tens[k&0xf];
+                j = k >> 4;
+                if ((j & Bletch) != 0) {
+                    /* prevent overflows */
+                    j &= Bletch - 1;
+                    d /= bigtens[n_bigtens-1];
+                    ieps++;
+                }
+                for(; (j != 0); j >>= 1, i++)
+                    if ((j & 1) != 0) {
+                        ieps++;
+                        ds *= bigtens[i];
+                    }
+                d /= ds;
+            }
+            else if ((j1 = -k) != 0) {
+                d *= tens[j1 & 0xf];
+                for(j = j1 >> 4; (j != 0); j >>= 1, i++)
+                    if ((j & 1) != 0) {
+                        ieps++;
+                        d *= bigtens[i];
+                    }
+            }
+            /* Check that k was computed correctly. */
+            if (k_check && d < 1.0 && ilim > 0) {
+                if (ilim1 <= 0)
+                    fast_failed = true;
+                else {
+                    ilim = ilim1;
+                    k--;
+                    d *= 10.;
+                    ieps++;
+                }
+            }
+            /* eps bounds the cumulative error. */
+//            eps = ieps*d + 7.0;
+//            word0(eps) -= (P-1)*Exp_msk1;
+            eps = ieps*d + 7.0;
+            eps = setWord0(eps, word0(eps) - (P-1)*Exp_msk1);
+            if (ilim == 0) {
+                S = mhi = null;
+                d -= 5.0;
+                if (d > eps) {
+                    buf.append('1');
+                    k++;
+                    return k + 1;
+                }
+                if (d < -eps) {
+                    buf.setLength(0);
+                    buf.append('0');        /* copy "0" to buffer */
+                    return 1;
+                }
+                fast_failed = true;
+            }
+            if (!fast_failed) {
+                fast_failed = true;
+                if (leftright) {
+                    /* Use Steele & White method of only
+                     * generating digits needed.
+                     */
+                    eps = 0.5/tens[ilim-1] - eps;
+                    for(i = 0;;) {
+                        L = (long)d;
+                        d -= L;
+                        buf.append((char)('0' + L));
+                        if (d < eps) {
+                            return k + 1;
+                        }
+                        if (1.0 - d < eps) {
+//                            goto bump_up;
+                                char lastCh;
+                                while (true) {
+                                    lastCh = buf.charAt(buf.length() - 1);
+                                    buf.setLength(buf.length() - 1);
+                                    if (lastCh != '9') break;
+                                    if (buf.length() == 0) {
+                                        k++;
+                                        lastCh = '0';
+                                        break;
+                                    }
+                                }
+                                buf.append((char)(lastCh + 1));
+                                return k + 1;
+                        }
+                        if (++i >= ilim)
+                            break;
+                        eps *= 10.0;
+                        d *= 10.0;
+                    }
+                }
+                else {
+                    /* Generate ilim digits, then fix them up. */
+                    eps *= tens[ilim-1];
+                    for(i = 1;; i++, d *= 10.0) {
+                        L = (long)d;
+                        d -= L;
+                        buf.append((char)('0' + L));
+                        if (i == ilim) {
+                            if (d > 0.5 + eps) {
+//                                goto bump_up;
+                                char lastCh;
+                                while (true) {
+                                    lastCh = buf.charAt(buf.length() - 1);
+                                    buf.setLength(buf.length() - 1);
+                                    if (lastCh != '9') break;
+                                    if (buf.length() == 0) {
+                                        k++;
+                                        lastCh = '0';
+                                        break;
+                                    }
+                                }
+                                buf.append((char)(lastCh + 1));
+                                return k + 1;
+                            }
+                            else
+                                if (d < 0.5 - eps) {
+                                    stripTrailingZeroes(buf);                                    
+//                                    while(*--s == '0') ;
+//                                    s++;
+                                    return k + 1;
+                                }
+                            break;
+                        }
+                    }
+                }
+            }
+            if (fast_failed) {
+                buf.setLength(0);
+                d = d2;
+                k = k0;
+                ilim = ilim0;
+            }
+        }
+
+        /* Do we have a "small" integer? */
+
+        if (be[0] >= 0 && k <= Int_max) {
+            /* Yes. */
+            ds = tens[k];
+            if (ndigits < 0 && ilim <= 0) {
+                S = mhi = null;
+                if (ilim < 0 || d < 5*ds || (!biasUp && d == 5*ds)) {
+                    buf.setLength(0);
+                    buf.append('0');        /* copy "0" to buffer */
+                    return 1;
+                }
+                buf.append('1');
+                k++;
+                return k + 1;
+            }
+            for(i = 1;; i++) {
+                L = (long) (d / ds);
+                d -= L*ds;
+                buf.append((char)('0' + L));
+                if (i == ilim) {
+                    d += d;
+                    if ((d > ds) || (d == ds && (((L & 1) != 0) || biasUp))) {
+//                    bump_up:
+//                        while(*--s == '9')
+//                            if (s == buf) {
+//                                k++;
+//                                *s = '0';
+//                                break;
+//                            }
+//                        ++*s++;
+                        char lastCh;
+                        while (true) {
+                            lastCh = buf.charAt(buf.length() - 1);
+                            buf.setLength(buf.length() - 1);
+                            if (lastCh != '9') break;
+                            if (buf.length() == 0) {
+                                k++;
+                                lastCh = '0';
+                                break;
+                            }
+                        }
+                        buf.append((char)(lastCh + 1));
+                    }
+                    break;
+                }
+                d *= 10.0;
+                if (d == 0)
+                    break;
+            }
+            return k + 1;
+        }
+
+        m2 = b2;
+        m5 = b5;
+        mhi = mlo = null;
+        if (leftright) {
+            if (mode < 2) {
+                i = (denorm) ? be[0] + (Bias + (P-1) - 1 + 1) : 1 + P - bbits[0];
+                /* i is 1 plus the number of trailing zero bits in d's significand. Thus,
+                   (2^m2 * 5^m5) / (2^(s2+i) * 5^s5) = (1/2 lsb of d)/10^k. */
+            }
+            else {
+                j = ilim - 1;
+                if (m5 >= j)
+                    m5 -= j;
+                else {
+                    s5 += j -= m5;
+                    b5 += j;
+                    m5 = 0;
+                }
+                if ((i = ilim) < 0) {
+                    m2 -= i;
+                    i = 0;
+                }
+                /* (2^m2 * 5^m5) / (2^(s2+i) * 5^s5) = (1/2 * 10^(1-ilim))/10^k. */
+            }
+            b2 += i;
+            s2 += i;
+            mhi = BigInteger.valueOf(1);
+            /* (mhi * 2^m2 * 5^m5) / (2^s2 * 5^s5) = one-half of last printed (when mode >= 2) or
+               input (when mode < 2) significant digit, divided by 10^k. */
+        }
+        /* We still have d/10^k = (b * 2^b2 * 5^b5) / (2^s2 * 5^s5).  Reduce common factors in
+           b2, m2, and s2 without changing the equalities. */
+        if (m2 > 0 && s2 > 0) {
+            i = (m2 < s2) ? m2 : s2;
+            b2 -= i;
+            m2 -= i;
+            s2 -= i;
+        }
+
+        /* Fold b5 into b and m5 into mhi. */
+        if (b5 > 0) {
+            if (leftright) {
+                if (m5 > 0) {
+                    mhi = pow5mult(mhi, m5);
+                    b1 = mhi.multiply(b);
+                    b = b1;
+                }
+                if ((j = b5 - m5) != 0)
+                    b = pow5mult(b, j);
+            }
+            else
+                b = pow5mult(b, b5);
+        }
+        /* Now we have d/10^k = (b * 2^b2) / (2^s2 * 5^s5) and
+           (mhi * 2^m2) / (2^s2 * 5^s5) = one-half of last printed or input significant digit, divided by 10^k. */
+
+        S = BigInteger.valueOf(1);
+        if (s5 > 0)
+            S = pow5mult(S, s5);
+        /* Now we have d/10^k = (b * 2^b2) / (S * 2^s2) and
+           (mhi * 2^m2) / (S * 2^s2) = one-half of last printed or input significant digit, divided by 10^k. */
+
+        /* Check for special case that d is a normalized power of 2. */
+        spec_case = false;
+        if (mode < 2) {
+            if ( (word1(d) == 0) && ((word0(d) & Bndry_mask) == 0)
+                && ((word0(d) & (Exp_mask & Exp_mask << 1)) != 0)
+                ) {
+                /* The special case.  Here we want to be within a quarter of the last input
+                   significant digit instead of one half of it when the decimal output string's value is less than d.  */
+                b2 += Log2P;
+                s2 += Log2P;
+                spec_case = true;
+            }
+        }
+
+        /* Arrange for convenient computation of quotients:
+         * shift left if necessary so divisor has 4 leading 0 bits.
+         *
+         * Perhaps we should just compute leading 28 bits of S once
+         * and for all and pass them and a shift to quorem, so it
+         * can do shifts and ors to compute the numerator for q.
+         */
+        byte [] S_bytes = S.toByteArray();
+        int S_hiWord = 0;
+        for (int idx = 0; idx < 4; idx++) {
+            S_hiWord = (S_hiWord << 8);
+            if (idx < S_bytes.length)
+                S_hiWord |= (S_bytes[idx] & 0xFF);
+        }
+        if ((i = (((s5 != 0) ? 32 - hi0bits(S_hiWord) : 1) + s2) & 0x1f) != 0)
+            i = 32 - i;
+        /* i is the number of leading zero bits in the most significant word of S*2^s2. */
+        if (i > 4) {
+            i -= 4;
+            b2 += i;
+            m2 += i;
+            s2 += i;
+        }
+        else if (i < 4) {
+            i += 28;
+            b2 += i;
+            m2 += i;
+            s2 += i;
+        }
+        /* Now S*2^s2 has exactly four leading zero bits in its most significant word. */
+        if (b2 > 0)
+            b = b.shiftLeft(b2);
+        if (s2 > 0)
+            S = S.shiftLeft(s2);
+        /* Now we have d/10^k = b/S and
+           (mhi * 2^m2) / S = maximum acceptable error, divided by 10^k. */
+        if (k_check) {
+            if (b.compareTo(S) < 0) {
+                k--;
+                b = b.multiply(BigInteger.valueOf(10));  /* we botched the k estimate */
+                if (leftright)
+                    mhi = mhi.multiply(BigInteger.valueOf(10));
+                ilim = ilim1;
+            }
+        }
+        /* At this point 1 <= d/10^k = b/S < 10. */
+
+        if (ilim <= 0 && mode > 2) {
+            /* We're doing fixed-mode output and d is less than the minimum nonzero output in this mode.
+               Output either zero or the minimum nonzero output depending on which is closer to d. */
+            if ((ilim < 0 )
+                    || ((i = b.compareTo(S = S.multiply(BigInteger.valueOf(5)))) < 0)
+                    || ((i == 0 && !biasUp))) {
+            /* Always emit at least one digit.  If the number appears to be zero
+               using the current mode, then emit one '0' digit and set decpt to 1. */
+            /*no_digits:
+                k = -1 - ndigits;
+                goto ret; */
+                buf.setLength(0);
+                buf.append('0');        /* copy "0" to buffer */
+                return 1;
+//                goto no_digits;
+            }
+//        one_digit:
+            buf.append('1');
+            k++;
+            return k + 1;
+        }
+        if (leftright) {
+            if (m2 > 0)
+                mhi = mhi.shiftLeft(m2);
+
+            /* Compute mlo -- check for special case
+             * that d is a normalized power of 2.
+             */
+
+            mlo = mhi;
+            if (spec_case) {
+                mhi = mlo;
+                mhi = mhi.shiftLeft(Log2P);
+            }
+            /* mlo/S = maximum acceptable error, divided by 10^k, if the output is less than d. */
+            /* mhi/S = maximum acceptable error, divided by 10^k, if the output is greater than d. */
+
+            for(i = 1;;i++) {
+                BigInteger[] divResult = b.divideAndRemainder(S);
+                b = divResult[1];
+                dig = (char)(divResult[0].intValue() + '0');
+                /* Do we yet have the shortest decimal string
+                 * that will round to d?
+                 */
+                j = b.compareTo(mlo);
+                /* j is b/S compared with mlo/S. */
+                delta = S.subtract(mhi);
+                j1 = (delta.signum() <= 0) ? 1 : b.compareTo(delta);
+                /* j1 is b/S compared with 1 - mhi/S. */
+                if ((j1 == 0) && (mode == 0) && ((word1(d) & 1) == 0)) {
+                    if (dig == '9') {
+                        buf.append('9');
+                        if (roundOff(buf)) {
+                            k++;
+                            buf.append('1');
+                        }
+                        return k + 1;
+//                        goto round_9_up;
+                    }
+                    if (j > 0)
+                        dig++;
+                    buf.append(dig);
+                    return k + 1;
+                }
+                if ((j < 0)
+                        || ((j == 0)
+                            && (mode == 0)
+                            && ((word1(d) & 1) == 0)
+                    )) {
+                    if (j1 > 0) {
+                        /* Either dig or dig+1 would work here as the least significant decimal digit.
+                           Use whichever would produce a decimal value closer to d. */
+                        b = b.shiftLeft(1);
+                        j1 = b.compareTo(S);
+                        if (((j1 > 0) || (j1 == 0 && (((dig & 1) == 1) || biasUp)))
+                            && (dig++ == '9')) {
+                                buf.append('9');
+                                if (roundOff(buf)) {
+                                    k++;
+                                    buf.append('1');
+                                }
+                                return k + 1;
+//                                goto round_9_up;
+                        }
+                    }
+                    buf.append(dig);
+                    return k + 1;
+                }
+                if (j1 > 0) {
+                    if (dig == '9') { /* possible if i == 1 */
+//                    round_9_up:
+//                        *s++ = '9';
+//                        goto roundoff;
+                        buf.append('9');
+                        if (roundOff(buf)) {
+                            k++;
+                            buf.append('1');
+                        }
+                        return k + 1;
+                    }
+                    buf.append((char)(dig + 1));
+                    return k + 1;
+                }
+                buf.append(dig);
+                if (i == ilim)
+                    break;
+                b = b.multiply(BigInteger.valueOf(10));
+                if (mlo == mhi)
+                    mlo = mhi = mhi.multiply(BigInteger.valueOf(10));
+                else {
+                    mlo = mlo.multiply(BigInteger.valueOf(10));
+                    mhi = mhi.multiply(BigInteger.valueOf(10));
+                }
+            }
+        }
+        else
+            for(i = 1;; i++) {
+//                (char)(dig = quorem(b,S) + '0');
+                BigInteger[] divResult = b.divideAndRemainder(S);
+                b = divResult[1];
+                dig = (char)(divResult[0].intValue() + '0');
+                buf.append(dig);
+                if (i >= ilim)
+                    break;
+                b = b.multiply(BigInteger.valueOf(10));
+            }
+
+        /* Round off last digit */
+
+        b = b.shiftLeft(1);
+        j = b.compareTo(S);
+        if ((j > 0) || (j == 0 && (((dig & 1) == 1) || biasUp))) {
+//        roundoff:
+//            while(*--s == '9')
+//                if (s == buf) {
+//                    k++;
+//                    *s++ = '1';
+//                    goto ret;
+//                }
+//            ++*s++;
+            if (roundOff(buf)) {
+                k++;
+                buf.append('1');
+                return k + 1;
+            }
+        }
+        else {
+            stripTrailingZeroes(buf);
+//            while(*--s == '0') ;
+//            s++;
+        }
+//      ret:
+//        Bfree(S);
+//        if (mhi) {
+//            if (mlo && mlo != mhi)
+//                Bfree(mlo);
+//            Bfree(mhi);
+//        }
+//      ret1:
+//        Bfree(b);
+//        JS_ASSERT(s < buf + bufsize);
+        return k + 1;
+    }
+
+    private static void 
+    stripTrailingZeroes(StringBuffer buf)
+    {
+//      while(*--s == '0') ;
+//      s++;
+        int bl = buf.length();
+        while(bl-->0 && buf.charAt(bl) == '0') {
+          // empty
+        }
+        buf.setLength(bl + 1);
+    }
+
+    /* Mapping of JSDToStrMode -> JS_dtoa mode */
+    private static final int dtoaModes[] = {
+        0,   /* DTOSTR_STANDARD */
+        0,   /* DTOSTR_STANDARD_EXPONENTIAL, */
+        3,   /* DTOSTR_FIXED, */
+        2,   /* DTOSTR_EXPONENTIAL, */
+        2};  /* DTOSTR_PRECISION */
+
+    static void
+    JS_dtostr(StringBuffer buffer, int mode, int precision, double d)
+    {
+        int decPt;                                    /* Position of decimal point relative to first digit returned by JS_dtoa */
+        boolean[] sign = new boolean[1];            /* true if the sign bit was set in d */
+        int nDigits;                                /* Number of significand digits returned by JS_dtoa */
+
+//        JS_ASSERT(bufferSize >= (size_t)(mode <= DTOSTR_STANDARD_EXPONENTIAL ? DTOSTR_STANDARD_BUFFER_SIZE :
+//                DTOSTR_VARIABLE_BUFFER_SIZE(precision)));
+
+        if (mode == DTOSTR_FIXED && (d >= 1e21 || d <= -1e21))
+            mode = DTOSTR_STANDARD; /* Change mode here rather than below because the buffer may not be large enough to hold a large integer. */
+
+        decPt = JS_dtoa(d, dtoaModes[mode], mode >= DTOSTR_FIXED, precision, sign, buffer);
+        nDigits = buffer.length();
+
+        /* If Infinity, -Infinity, or NaN, return the string regardless of the mode. */
+        if (decPt != 9999) {
+            boolean exponentialNotation = false;
+            int minNDigits = 0;         /* Minimum number of significand digits required by mode and precision */
+            int p;
+
+            switch (mode) {
+                case DTOSTR_STANDARD:
+                    if (decPt < -5 || decPt > 21)
+                        exponentialNotation = true;
+                    else
+                        minNDigits = decPt;
+                    break;
+
+                case DTOSTR_FIXED:
+                    if (precision >= 0)
+                        minNDigits = decPt + precision;
+                    else
+                        minNDigits = decPt;
+                    break;
+
+                case DTOSTR_EXPONENTIAL:
+//                    JS_ASSERT(precision > 0);
+                    minNDigits = precision;
+                    /* Fall through */
+                case DTOSTR_STANDARD_EXPONENTIAL:
+                    exponentialNotation = true;
+                    break;
+
+                case DTOSTR_PRECISION:
+//                    JS_ASSERT(precision > 0);
+                    minNDigits = precision;
+                    if (decPt < -5 || decPt > precision)
+                        exponentialNotation = true;
+                    break;
+            }
+
+            /* If the number has fewer than minNDigits, pad it with zeros at the end */
+            if (nDigits < minNDigits) {
+                p = minNDigits;
+                nDigits = minNDigits;
+                do {
+                    buffer.append('0');
+                } while (buffer.length() != p);
+            }
+
+            if (exponentialNotation) {
+                /* Insert a decimal point if more than one significand digit */
+                if (nDigits != 1) {
+                    buffer.insert(1, '.');
+                }
+                buffer.append('e');
+                if ((decPt - 1) >= 0)
+                    buffer.append('+');
+                buffer.append(decPt - 1);
+//                JS_snprintf(numEnd, bufferSize - (numEnd - buffer), "e%+d", decPt-1);
+            } else if (decPt != nDigits) {
+                /* Some kind of a fraction in fixed notation */
+//                JS_ASSERT(decPt <= nDigits);
+                if (decPt > 0) {
+                    /* dd...dd . dd...dd */
+                    buffer.insert(decPt, '.');
+                } else {
+                    /* 0 . 00...00dd...dd */
+                    for (int i = 0; i < 1 - decPt; i++)
+                        buffer.insert(0, '0');
+                    buffer.insert(1, '.');
+                }
+            }
+        }
+
+        /* If negative and neither -0.0 nor NaN, output a leading '-'. */
+        if (sign[0] &&
+                !(word0(d) == Sign_bit && word1(d) == 0) &&
+                !((word0(d) & Exp_mask) == Exp_mask &&
+                  ((word1(d) != 0) || ((word0(d) & Frac_mask) != 0)))) {
+            buffer.insert(0, '-');
+        }
+    }
+
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Decompiler.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Decompiler.java
new file mode 100644
index 0000000..8547d37
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Decompiler.java
@@ -0,0 +1,918 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Mike Ang
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * The following class save decompilation information about the source.
+ * Source information is returned from the parser as a String
+ * associated with function nodes and with the toplevel script.  When
+ * saved in the constant pool of a class, this string will be UTF-8
+ * encoded, and token values will occupy a single byte.
+
+ * Source is saved (mostly) as token numbers.  The tokens saved pretty
+ * much correspond to the token stream of a 'canonical' representation
+ * of the input program, as directed by the parser.  (There were a few
+ * cases where tokens could have been left out where decompiler could
+ * easily reconstruct them, but I left them in for clarity).  (I also
+ * looked adding source collection to TokenStream instead, where I
+ * could have limited the changes to a few lines in getToken... but
+ * this wouldn't have saved any space in the resulting source
+ * representation, and would have meant that I'd have to duplicate
+ * parser logic in the decompiler to disambiguate situations where
+ * newlines are important.)  The function decompile expands the
+ * tokens back into their string representations, using simple
+ * lookahead to correct spacing and indentation.
+ *
+ * Assignments are saved as two-token pairs (Token.ASSIGN, op). Number tokens
+ * are stored inline, as a NUMBER token, a character representing the type, and
+ * either 1 or 4 characters representing the bit-encoding of the number.  String
+ * types NAME, STRING and OBJECT are currently stored as a token type,
+ * followed by a character giving the length of the string (assumed to
+ * be less than 2^16), followed by the characters of the string
+ * inlined into the source string.  Changing this to some reference to
+ * to the string in the compiled class' constant pool would probably
+ * save a lot of space... but would require some method of deriving
+ * the final constant pool entry from information available at parse
+ * time.
+ */
+public class Decompiler
+{
+    /**
+     * Flag to indicate that the decompilation should omit the
+     * function header and trailing brace.
+     */
+    public static final int ONLY_BODY_FLAG = 1 << 0;
+
+    /**
+     * Flag to indicate that the decompilation generates toSource result.
+     */
+    public static final int TO_SOURCE_FLAG = 1 << 1;
+
+    /**
+     * Decompilation property to specify initial ident value.
+     */
+    public static final int INITIAL_INDENT_PROP = 1;
+
+    /**
+     * Decompilation property to specify default identation offset.
+     */
+    public static final int INDENT_GAP_PROP = 2;
+
+    /**
+     * Decompilation property to specify identation offset for case labels.
+     */
+    public static final int CASE_GAP_PROP = 3;
+
+    // Marker to denote the last RC of function so it can be distinguished from
+    // the last RC of object literals in case of function expressions
+    private static final int FUNCTION_END = Token.LAST_TOKEN + 1;
+
+    String getEncodedSource()
+    {
+        return sourceToString(0);
+    }
+
+    int getCurrentOffset()
+    {
+        return sourceTop;
+    }
+
+    int markFunctionStart(int functionType)
+    {
+        int savedOffset = getCurrentOffset();
+        addToken(Token.FUNCTION);
+        append((char)functionType);
+        return savedOffset;
+    }
+
+    int markFunctionEnd(int functionStart)
+    {
+        int offset = getCurrentOffset();
+        append((char)FUNCTION_END);
+        return offset;
+    }
+
+    void addToken(int token)
+    {
+        if (!(0 <= token && token <= Token.LAST_TOKEN))
+            throw new IllegalArgumentException();
+
+        append((char)token);
+    }
+
+    void addEOL(int token)
+    {
+        if (!(0 <= token && token <= Token.LAST_TOKEN))
+            throw new IllegalArgumentException();
+
+        append((char)token);
+        append((char)Token.EOL);
+    }
+
+    void addName(String str)
+    {
+        addToken(Token.NAME);
+        appendString(str);
+    }
+
+    void addString(String str)
+    {
+        addToken(Token.STRING);
+        appendString(str);
+    }
+
+    void addRegexp(String regexp, String flags)
+    {
+        addToken(Token.REGEXP);
+        appendString('/' + regexp + '/' + flags);
+    }
+
+    void addNumber(double n)
+    {
+        addToken(Token.NUMBER);
+
+        /* encode the number in the source stream.
+         * Save as NUMBER type (char | char char char char)
+         * where type is
+         * 'D' - double, 'S' - short, 'J' - long.
+
+         * We need to retain float vs. integer type info to keep the
+         * behavior of liveconnect type-guessing the same after
+         * decompilation.  (Liveconnect tries to present 1.0 to Java
+         * as a float/double)
+         * OPT: This is no longer true. We could compress the format.
+
+         * This may not be the most space-efficient encoding;
+         * the chars created below may take up to 3 bytes in
+         * constant pool UTF-8 encoding, so a Double could take
+         * up to 12 bytes.
+         */
+
+        long lbits = (long)n;
+        if (lbits != n) {
+            // if it's floating point, save as a Double bit pattern.
+            // (12/15/97 our scanner only returns Double for f.p.)
+            lbits = Double.doubleToLongBits(n);
+            append('D');
+            append((char)(lbits >> 48));
+            append((char)(lbits >> 32));
+            append((char)(lbits >> 16));
+            append((char)lbits);
+        }
+        else {
+            // we can ignore negative values, bc they're already prefixed
+            // by NEG
+               if (lbits < 0) Kit.codeBug();
+
+            // will it fit in a char?
+            // this gives a short encoding for integer values up to 2^16.
+            if (lbits <= Character.MAX_VALUE) {
+                append('S');
+                append((char)lbits);
+            }
+            else { // Integral, but won't fit in a char. Store as a long.
+                append('J');
+                append((char)(lbits >> 48));
+                append((char)(lbits >> 32));
+                append((char)(lbits >> 16));
+                append((char)lbits);
+            }
+        }
+    }
+
+    private void appendString(String str)
+    {
+        int L = str.length();
+        int lengthEncodingSize = 1;
+        if (L >= 0x8000) {
+            lengthEncodingSize = 2;
+        }
+        int nextTop = sourceTop + lengthEncodingSize + L;
+        if (nextTop > sourceBuffer.length) {
+            increaseSourceCapacity(nextTop);
+        }
+        if (L >= 0x8000) {
+            // Use 2 chars to encode strings exceeding 32K, were the highest
+            // bit in the first char indicates presence of the next byte
+            sourceBuffer[sourceTop] = (char)(0x8000 | (L >>> 16));
+            ++sourceTop;
+        }
+        sourceBuffer[sourceTop] = (char)L;
+        ++sourceTop;
+        str.getChars(0, L, sourceBuffer, sourceTop);
+        sourceTop = nextTop;
+    }
+
+    private void append(char c)
+    {
+        if (sourceTop == sourceBuffer.length) {
+            increaseSourceCapacity(sourceTop + 1);
+        }
+        sourceBuffer[sourceTop] = c;
+        ++sourceTop;
+    }
+
+    private void increaseSourceCapacity(int minimalCapacity)
+    {
+        // Call this only when capacity increase is must
+        if (minimalCapacity <= sourceBuffer.length) Kit.codeBug();
+        int newCapacity = sourceBuffer.length * 2;
+        if (newCapacity < minimalCapacity) {
+            newCapacity = minimalCapacity;
+        }
+        char[] tmp = new char[newCapacity];
+        System.arraycopy(sourceBuffer, 0, tmp, 0, sourceTop);
+        sourceBuffer = tmp;
+    }
+
+    private String sourceToString(int offset)
+    {
+        if (offset < 0 || sourceTop < offset) Kit.codeBug();
+        return new String(sourceBuffer, offset, sourceTop - offset);
+    }
+
+    /**
+     * Decompile the source information associated with this js
+     * function/script back into a string.  For the most part, this
+     * just means translating tokens back to their string
+     * representations; there's a little bit of lookahead logic to
+     * decide the proper spacing/indentation.  Most of the work in
+     * mapping the original source to the prettyprinted decompiled
+     * version is done by the parser.
+     *
+     * @param source encoded source tree presentation
+     *
+     * @param flags flags to select output format
+     *
+     * @param properties indentation properties
+     *
+     */
+    public static String decompile(String source, int flags,
+                                   UintMap properties)
+    {
+        int length = source.length();
+        if (length == 0) { return ""; }
+
+        int indent = properties.getInt(INITIAL_INDENT_PROP, 0);
+        if (indent < 0) throw new IllegalArgumentException();
+        int indentGap = properties.getInt(INDENT_GAP_PROP, 4);
+        if (indentGap < 0) throw new IllegalArgumentException();
+        int caseGap = properties.getInt(CASE_GAP_PROP, 2);
+        if (caseGap < 0) throw new IllegalArgumentException();
+
+        StringBuffer result = new StringBuffer();
+        boolean justFunctionBody = (0 != (flags & Decompiler.ONLY_BODY_FLAG));
+        boolean toSource = (0 != (flags & Decompiler.TO_SOURCE_FLAG));
+
+        // Spew tokens in source, for debugging.
+        // as TYPE number char
+        if (printSource) {
+            System.err.println("length:" + length);
+            for (int i = 0; i < length; ++i) {
+                // Note that tokenToName will fail unless Context.printTrees
+                // is true.
+                String tokenname = null;
+                if (Token.printNames) {
+                    tokenname = Token.name(source.charAt(i));
+                }
+                if (tokenname == null) {
+                    tokenname = "---";
+                }
+                String pad = tokenname.length() > 7
+                    ? "\t"
+                    : "\t\t";
+                System.err.println
+                    (tokenname
+                     + pad + (int)source.charAt(i)
+                     + "\t'" + ScriptRuntime.escapeString
+                     (source.substring(i, i+1))
+                     + "'");
+            }
+            System.err.println();
+        }
+
+        int braceNesting = 0;
+        boolean afterFirstEOL = false;
+        int i = 0;
+        int topFunctionType;
+        if (source.charAt(i) == Token.SCRIPT) {
+            ++i;
+            topFunctionType = -1;
+        } else {
+            topFunctionType = source.charAt(i + 1);
+        }
+
+        if (!toSource) {
+            // add an initial newline to exactly match js.
+            result.append('\n');
+            for (int j = 0; j < indent; j++)
+                result.append(' ');
+        } else {
+            if (topFunctionType == FunctionNode.FUNCTION_EXPRESSION) {
+                result.append('(');
+            }
+        }
+
+        while (i < length) {
+            switch(source.charAt(i)) {
+            case Token.GET:
+            case Token.SET:
+                result.append(source.charAt(i) == Token.GET ? "get " : "set ");
+                ++i;
+                i = printSourceString(source, i + 1, false, result);
+                // Now increment one more to get past the FUNCTION token
+                ++i;
+                break;
+
+            case Token.NAME:
+            case Token.REGEXP:  // re-wrapped in '/'s in parser...
+                i = printSourceString(source, i + 1, false, result);
+                continue;
+
+            case Token.STRING:
+                i = printSourceString(source, i + 1, true, result);
+                continue;
+
+            case Token.NUMBER:
+                i = printSourceNumber(source, i + 1, result);
+                continue;
+
+            case Token.TRUE:
+                result.append("true");
+                break;
+
+            case Token.FALSE:
+                result.append("false");
+                break;
+
+            case Token.NULL:
+                result.append("null");
+                break;
+
+            case Token.THIS:
+                result.append("this");
+                break;
+
+            case Token.FUNCTION:
+                ++i; // skip function type
+                result.append("function ");
+                break;
+
+            case FUNCTION_END:
+                // Do nothing
+                break;
+
+            case Token.COMMA:
+                result.append(", ");
+                break;
+
+            case Token.LC:
+                ++braceNesting;
+                if (Token.EOL == getNext(source, length, i))
+                    indent += indentGap;
+                result.append('{');
+                break;
+
+            case Token.RC: {
+                --braceNesting;
+                /* don't print the closing RC if it closes the
+                 * toplevel function and we're called from
+                 * decompileFunctionBody.
+                 */
+                if (justFunctionBody && braceNesting == 0)
+                    break;
+
+                result.append('}');
+                switch (getNext(source, length, i)) {
+                    case Token.EOL:
+                    case FUNCTION_END:
+                        indent -= indentGap;
+                        break;
+                    case Token.WHILE:
+                    case Token.ELSE:
+                        indent -= indentGap;
+                        result.append(' ');
+                        break;
+                }
+                break;
+            }
+            case Token.LP:
+                result.append('(');
+                break;
+
+            case Token.RP:
+                result.append(')');
+                if (Token.LC == getNext(source, length, i))
+                    result.append(' ');
+                break;
+
+            case Token.LB:
+                result.append('[');
+                break;
+
+            case Token.RB:
+                result.append(']');
+                break;
+
+            case Token.EOL: {
+                if (toSource) break;
+                boolean newLine = true;
+                if (!afterFirstEOL) {
+                    afterFirstEOL = true;
+                    if (justFunctionBody) {
+                        /* throw away just added 'function name(...) {'
+                         * and restore the original indent
+                         */
+                        result.setLength(0);
+                        indent -= indentGap;
+                        newLine = false;
+                    }
+                }
+                if (newLine) {
+                    result.append('\n');
+                }
+
+                /* add indent if any tokens remain,
+                 * less setback if next token is
+                 * a label, case or default.
+                 */
+                if (i + 1 < length) {
+                    int less = 0;
+                    int nextToken = source.charAt(i + 1);
+                    if (nextToken == Token.CASE
+                        || nextToken == Token.DEFAULT)
+                    {
+                        less = indentGap - caseGap;
+                    } else if (nextToken == Token.RC) {
+                        less = indentGap;
+                    }
+
+                    /* elaborate check against label... skip past a
+                     * following inlined NAME and look for a COLON.
+                     */
+                    else if (nextToken == Token.NAME) {
+                        int afterName = getSourceStringEnd(source, i + 2);
+                        if (source.charAt(afterName) == Token.COLON)
+                            less = indentGap;
+                    }
+
+                    for (; less < indent; less++)
+                        result.append(' ');
+                }
+                break;
+            }
+            case Token.DOT:
+                result.append('.');
+                break;
+
+            case Token.NEW:
+                result.append("new ");
+                break;
+
+            case Token.DELPROP:
+                result.append("delete ");
+                break;
+
+            case Token.IF:
+                result.append("if ");
+                break;
+
+            case Token.ELSE:
+                result.append("else ");
+                break;
+
+            case Token.FOR:
+                result.append("for ");
+                break;
+
+            case Token.IN:
+                result.append(" in ");
+                break;
+
+            case Token.WITH:
+                result.append("with ");
+                break;
+
+            case Token.WHILE:
+                result.append("while ");
+                break;
+
+            case Token.DO:
+                result.append("do ");
+                break;
+
+            case Token.TRY:
+                result.append("try ");
+                break;
+
+            case Token.CATCH:
+                result.append("catch ");
+                break;
+
+            case Token.FINALLY:
+                result.append("finally ");
+                break;
+
+            case Token.THROW:
+                result.append("throw ");
+                break;
+
+            case Token.SWITCH:
+                result.append("switch ");
+                break;
+
+            case Token.BREAK:
+                result.append("break");
+                if (Token.NAME == getNext(source, length, i))
+                    result.append(' ');
+                break;
+
+            case Token.CONTINUE:
+                result.append("continue");
+                if (Token.NAME == getNext(source, length, i))
+                    result.append(' ');
+                break;
+
+            case Token.CASE:
+                result.append("case ");
+                break;
+
+            case Token.DEFAULT:
+                result.append("default");
+                break;
+
+            case Token.RETURN:
+                result.append("return");
+                if (Token.SEMI != getNext(source, length, i))
+                    result.append(' ');
+                break;
+
+            case Token.VAR:
+                result.append("var ");
+                break;
+
+            case Token.LET:
+              result.append("let ");
+              break;
+
+            case Token.SEMI:
+                result.append(';');
+                if (Token.EOL != getNext(source, length, i)) {
+                    // separators in FOR
+                    result.append(' ');
+                }
+                break;
+
+            case Token.ASSIGN:
+                result.append(" = ");
+                break;
+
+            case Token.ASSIGN_ADD:
+                result.append(" += ");
+                break;
+
+            case Token.ASSIGN_SUB:
+                result.append(" -= ");
+                break;
+
+            case Token.ASSIGN_MUL:
+                result.append(" *= ");
+                break;
+
+            case Token.ASSIGN_DIV:
+                result.append(" /= ");
+                break;
+
+            case Token.ASSIGN_MOD:
+                result.append(" %= ");
+                break;
+
+            case Token.ASSIGN_BITOR:
+                result.append(" |= ");
+                break;
+
+            case Token.ASSIGN_BITXOR:
+                result.append(" ^= ");
+                break;
+
+            case Token.ASSIGN_BITAND:
+                result.append(" &= ");
+                break;
+
+            case Token.ASSIGN_LSH:
+                result.append(" <<= ");
+                break;
+
+            case Token.ASSIGN_RSH:
+                result.append(" >>= ");
+                break;
+
+            case Token.ASSIGN_URSH:
+                result.append(" >>>= ");
+                break;
+
+            case Token.HOOK:
+                result.append(" ? ");
+                break;
+
+            case Token.OBJECTLIT:
+                // pun OBJECTLIT to mean colon in objlit property
+                // initialization.
+                // This needs to be distinct from COLON in the general case
+                // to distinguish from the colon in a ternary... which needs
+                // different spacing.
+                result.append(':');
+                break;
+
+            case Token.COLON:
+                if (Token.EOL == getNext(source, length, i))
+                    // it's the end of a label
+                    result.append(':');
+                else
+                    // it's the middle part of a ternary
+                    result.append(" : ");
+                break;
+
+            case Token.OR:
+                result.append(" || ");
+                break;
+
+            case Token.AND:
+                result.append(" && ");
+                break;
+
+            case Token.BITOR:
+                result.append(" | ");
+                break;
+
+            case Token.BITXOR:
+                result.append(" ^ ");
+                break;
+
+            case Token.BITAND:
+                result.append(" & ");
+                break;
+
+            case Token.SHEQ:
+                result.append(" === ");
+                break;
+
+            case Token.SHNE:
+                result.append(" !== ");
+                break;
+
+            case Token.EQ:
+                result.append(" == ");
+                break;
+
+            case Token.NE:
+                result.append(" != ");
+                break;
+
+            case Token.LE:
+                result.append(" <= ");
+                break;
+
+            case Token.LT:
+                result.append(" < ");
+                break;
+
+            case Token.GE:
+                result.append(" >= ");
+                break;
+
+            case Token.GT:
+                result.append(" > ");
+                break;
+
+            case Token.INSTANCEOF:
+                result.append(" instanceof ");
+                break;
+
+            case Token.LSH:
+                result.append(" << ");
+                break;
+
+            case Token.RSH:
+                result.append(" >> ");
+                break;
+
+            case Token.URSH:
+                result.append(" >>> ");
+                break;
+
+            case Token.TYPEOF:
+                result.append("typeof ");
+                break;
+
+            case Token.VOID:
+                result.append("void ");
+                break;
+
+            case Token.CONST:
+                result.append("const ");
+                break;
+                
+            case Token.YIELD:
+                result.append("yield ");
+                break;
+            
+            case Token.NOT:
+                result.append('!');
+                break;
+
+            case Token.BITNOT:
+                result.append('~');
+                break;
+
+            case Token.POS:
+                result.append('+');
+                break;
+
+            case Token.NEG:
+                result.append('-');
+                break;
+
+            case Token.INC:
+                result.append("++");
+                break;
+
+            case Token.DEC:
+                result.append("--");
+                break;
+
+            case Token.ADD:
+                result.append(" + ");
+                break;
+
+            case Token.SUB:
+                result.append(" - ");
+                break;
+
+            case Token.MUL:
+                result.append(" * ");
+                break;
+
+            case Token.DIV:
+                result.append(" / ");
+                break;
+
+            case Token.MOD:
+                result.append(" % ");
+                break;
+
+            case Token.COLONCOLON:
+                result.append("::");
+                break;
+
+            case Token.DOTDOT:
+                result.append("..");
+                break;
+
+            case Token.DOTQUERY:
+                result.append(".(");
+                break;
+
+            case Token.XMLATTR:
+                result.append('@');
+                break;
+
+            default:
+                // If we don't know how to decompile it, raise an exception.
+                throw new RuntimeException("Token: " +
+                                               Token.name(source.charAt(i)));
+            }
+            ++i;
+        }
+
+        if (!toSource) {
+            // add that trailing newline if it's an outermost function.
+            if (!justFunctionBody)
+                result.append('\n');
+        } else {
+            if (topFunctionType == FunctionNode.FUNCTION_EXPRESSION) {
+                result.append(')');
+            }
+        }
+
+        return result.toString();
+    }
+
+    private static int getNext(String source, int length, int i)
+    {
+        return (i + 1 < length) ? source.charAt(i + 1) : Token.EOF;
+    }
+
+    private static int getSourceStringEnd(String source, int offset)
+    {
+        return printSourceString(source, offset, false, null);
+    }
+
+    private static int printSourceString(String source, int offset,
+                                         boolean asQuotedString,
+                                         StringBuffer sb)
+    {
+        int length = source.charAt(offset);
+        ++offset;
+        if ((0x8000 & length) != 0) {
+            length = ((0x7FFF & length) << 16) | source.charAt(offset);
+            ++offset;
+        }
+        if (sb != null) {
+            String str = source.substring(offset, offset + length);
+            if (!asQuotedString) {
+                sb.append(str);
+            } else {
+                sb.append('"');
+                sb.append(ScriptRuntime.escapeString(str));
+                sb.append('"');
+            }
+        }
+        return offset + length;
+    }
+
+    private static int printSourceNumber(String source, int offset,
+                                         StringBuffer sb)
+    {
+        double number = 0.0;
+        char type = source.charAt(offset);
+        ++offset;
+        if (type == 'S') {
+            if (sb != null) {
+                int ival = source.charAt(offset);
+                number = ival;
+            }
+            ++offset;
+        } else if (type == 'J' || type == 'D') {
+            if (sb != null) {
+                long lbits;
+                lbits = (long)source.charAt(offset) << 48;
+                lbits |= (long)source.charAt(offset + 1) << 32;
+                lbits |= (long)source.charAt(offset + 2) << 16;
+                lbits |= source.charAt(offset + 3);
+                if (type == 'J') {
+                    number = lbits;
+                } else {
+                    number = Double.longBitsToDouble(lbits);
+                }
+            }
+            offset += 4;
+        } else {
+            // Bad source
+            throw new RuntimeException();
+        }
+        if (sb != null) {
+            sb.append(ScriptRuntime.numberToString(number, 10));
+        }
+        return offset;
+    }
+
+    private char[] sourceBuffer = new char[128];
+
+// Per script/function source buffer top: parent source does not include a
+// nested functions source and uses function index as a reference instead.
+    private int sourceTop;
+
+// whether to do a debug print of the source information, when decompiling.
+    private static final boolean printSource = false;
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefaultErrorReporter.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefaultErrorReporter.java
new file mode 100644
index 0000000..c7d93d4
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefaultErrorReporter.java
@@ -0,0 +1,113 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This is the default error reporter for JavaScript.
+ *
+ * @author Norris Boyd
+ */
+class DefaultErrorReporter implements ErrorReporter
+{
+    static final DefaultErrorReporter instance = new DefaultErrorReporter();
+
+    private boolean forEval;
+    private ErrorReporter chainedReporter;
+
+    private DefaultErrorReporter() { }
+
+    static ErrorReporter forEval(ErrorReporter reporter)
+    {
+        DefaultErrorReporter r = new DefaultErrorReporter();
+        r.forEval = true;
+        r.chainedReporter = reporter;
+        return r;
+    }
+
+    public void warning(String message, String sourceURI, int line,
+                        String lineText, int lineOffset)
+    {
+        if (chainedReporter != null) {
+            chainedReporter.warning(
+                message, sourceURI, line, lineText, lineOffset);
+        } else {
+            // Do nothing
+        }
+    }
+
+    public void error(String message, String sourceURI, int line,
+                      String lineText, int lineOffset)
+    {
+        if (forEval) {
+            // Assume error message strings that start with "TypeError: "
+            // should become TypeError exceptions. A bit of a hack, but we
+            // don't want to change the ErrorReporter interface.
+            String error = "SyntaxError";
+            final String TYPE_ERROR_NAME = "TypeError";
+            final String DELIMETER = ": ";
+            final String prefix = TYPE_ERROR_NAME + DELIMETER;
+            if (message.startsWith(prefix)) {
+                error = TYPE_ERROR_NAME;
+                message = message.substring(prefix.length());
+            }
+            throw ScriptRuntime.constructError(error, message, sourceURI, 
+                                               line, lineText, lineOffset);
+        }
+        if (chainedReporter != null) {
+            chainedReporter.error(
+                message, sourceURI, line, lineText, lineOffset);
+        } else {
+            throw runtimeError(
+                message, sourceURI, line, lineText, lineOffset);
+        }
+    }
+
+    public EvaluatorException runtimeError(String message, String sourceURI,
+                                           int line, String lineText,
+                                           int lineOffset)
+    {
+        if (chainedReporter != null) {
+            return chainedReporter.runtimeError(
+                message, sourceURI, line, lineText, lineOffset);
+        } else {
+            return new EvaluatorException(
+                message, sourceURI, line, lineText, lineOffset);
+        }
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefiningClassLoader.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefiningClassLoader.java
new file mode 100644
index 0000000..5864b5d
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/DefiningClassLoader.java
@@ -0,0 +1,88 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roger Lawrence
+ *   Patrick Beard
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * Load generated classes.
+ *
+ * @author Norris Boyd
+ */
+public class DefiningClassLoader extends ClassLoader
+    implements GeneratedClassLoader
+{
+    public DefiningClassLoader() {
+        this.parentLoader = getClass().getClassLoader();
+    }
+
+    public DefiningClassLoader(ClassLoader parentLoader) {
+        this.parentLoader = parentLoader;
+    }
+
+    public Class defineClass(String name, byte[] data) {
+        // Use our own protection domain for the generated classes.
+        // TODO: we might want to use a separate protection domain for classes
+        // compiled from scripts, based on where the script was loaded from.
+        return super.defineClass(name, data, 0, data.length, 
+                SecurityUtilities.getProtectionDomain(getClass()));
+    }
+
+    public void linkClass(Class cl) {
+        resolveClass(cl);
+    }
+
+    public Class loadClass(String name, boolean resolve)
+        throws ClassNotFoundException
+    {
+        Class cl = findLoadedClass(name);
+        if (cl == null) {
+            if (parentLoader != null) {
+                cl = parentLoader.loadClass(name);
+            } else {
+                cl = findSystemClass(name);
+            }
+        }
+        if (resolve) {
+            resolveClass(cl);
+        }
+        return cl;
+    }
+
+    private final ClassLoader parentLoader;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Delegator.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Delegator.java
new file mode 100644
index 0000000..e044863
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Delegator.java
@@ -0,0 +1,266 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Delegator.java, released
+ * Sep 27, 2000.
+ *
+ * The Initial Developer of the Original Code is
+ * Matthias Radestock. <matthias@sorted.org>.
+ * Portions created by the Initial Developer are Copyright (C) 2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * This is a helper class for implementing wrappers around Scriptable
+ * objects. It implements the Function interface and delegates all
+ * invocations to a delegee Scriptable object. The normal use of this
+ * class involves creating a sub-class and overriding one or more of
+ * the methods.
+ *
+ * A useful application is the implementation of interceptors,
+ * pre/post conditions, debugging.
+ *
+ * @see Function
+ * @see Scriptable
+ * @author Matthias Radestock
+ */
+
+public class Delegator implements Function {
+
+    protected Scriptable obj = null;
+
+    /**
+     * Create a Delegator prototype.
+     *
+     * This constructor should only be used for creating prototype
+     * objects of Delegator.
+     *
+     * @see org.mozilla.javascript.Delegator#construct
+     */
+    public Delegator() {
+    }
+
+    /**
+     * Create a new Delegator that forwards requests to a delegee
+     * Scriptable object.
+     *
+     * @param obj the delegee
+     * @see org.mozilla.javascript.Scriptable
+     */
+    public Delegator(Scriptable obj) {
+        this.obj = obj;
+    }
+
+    /**
+     * Crete new Delegator instance.
+     * The default implementation calls this.getClass().newInstance().
+     *
+     * @see #construct(Context cx, Scriptable scope, Object[] args)
+     */
+    protected Delegator newInstance()
+    {
+        try {
+            return this.getClass().newInstance();
+        } catch (Exception ex) {
+            throw Context.throwAsScriptRuntimeEx(ex);
+        }
+    }
+
+    /**
+     * Retrieve the delegee.
+     *
+     * @return the delegee
+     */
+    public Scriptable getDelegee() {
+        return obj;
+    }
+    /**
+     * Set the delegee.
+     *
+     * @param obj the delegee
+     * @see org.mozilla.javascript.Scriptable
+     */
+    public void setDelegee(Scriptable obj) {
+        this.obj = obj;
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#getClassName
+     */
+    public String getClassName() {
+        return obj.getClassName();
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#get(String, Scriptable)
+     */
+    public Object get(String name, Scriptable start) {
+        return obj.get(name,start);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#get(int, Scriptable)
+     */
+    public Object get(int index, Scriptable start) {
+        return obj.get(index,start);
+        }
+    /**
+     * @see org.mozilla.javascript.Scriptable#has(String, Scriptable)
+     */
+    public boolean has(String name, Scriptable start) {
+        return obj.has(name,start);
+        }
+    /**
+     * @see org.mozilla.javascript.Scriptable#has(int, Scriptable)
+     */
+    public boolean has(int index, Scriptable start) {
+        return obj.has(index,start);
+        }
+    /**
+     * @see org.mozilla.javascript.Scriptable#put(String, Scriptable, Object)
+     */
+    public void put(String name, Scriptable start, Object value) {
+        obj.put(name,start,value);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#put(int, Scriptable, Object)
+     */
+    public void put(int index, Scriptable start, Object value) {
+        obj.put(index,start,value);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#delete(String)
+     */
+    public void delete(String name) {
+        obj.delete(name);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#delete(int)
+     */
+    public void delete(int index) {
+        obj.delete(index);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#getPrototype
+     */
+    public Scriptable getPrototype() {
+        return obj.getPrototype();
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#setPrototype
+     */
+    public void setPrototype(Scriptable prototype) {
+        obj.setPrototype(prototype);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#getParentScope
+     */
+    public Scriptable getParentScope() {
+        return obj.getParentScope();
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#setParentScope
+     */
+    public void setParentScope(Scriptable parent) {
+        obj.setParentScope(parent);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#getIds
+     */
+    public Object[] getIds() {
+        return obj.getIds();
+    }
+    /**
+     * Note that this method does not get forwarded to the delegee if
+     * the <code>hint</code> parameter is null,
+     * <code>ScriptRuntime.ScriptableClass</code> or
+     * <code>ScriptRuntime.FunctionClass</code>. Instead the object
+     * itself is returned.
+     *
+     * @param hint the type hint
+     * @return the default value
+     *
+     * @see org.mozilla.javascript.Scriptable#getDefaultValue
+     */
+    public Object getDefaultValue(Class hint) {
+        return (hint == null ||
+                hint == ScriptRuntime.ScriptableClass ||
+                hint == ScriptRuntime.FunctionClass) ?
+            this : obj.getDefaultValue(hint);
+    }
+    /**
+     * @see org.mozilla.javascript.Scriptable#hasInstance
+     */
+    public boolean hasInstance(Scriptable instance) {
+        return obj.hasInstance(instance);
+    }
+    /**
+     * @see org.mozilla.javascript.Function#call
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        return ((Function)obj).call(cx,scope,thisObj,args);
+    }
+
+    /**
+     * Note that if the <code>delegee</code> is <code>null</code>,
+     * this method creates a new instance of the Delegator itself
+     * rathert than forwarding the call to the
+     * <code>delegee</code>. This permits the use of Delegator
+     * prototypes.
+     *
+     * @param cx the current Context for this thread
+     * @param scope an enclosing scope of the caller except
+     *              when the function is called from a closure.
+     * @param args the array of arguments
+     * @return the allocated object
+     *
+     * @see Function#construct(Context, Scriptable, Object[])
+     */
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        if (obj == null) {
+            //this little trick allows us to declare prototype objects for
+            //Delegators
+            Delegator n = newInstance();
+            Scriptable delegee;
+            if (args.length == 0) {
+                delegee = new NativeObject();
+            } else {
+                delegee = ScriptRuntime.toObject(cx, scope, args[0]);
+            }
+            n.setDelegee(delegee);
+            return n;
+        }
+        else {
+            return ((Function)obj).construct(cx,scope,args);
+        }
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/EcmaError.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/EcmaError.java
new file mode 100644
index 0000000..1fd8f03
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/EcmaError.java
@@ -0,0 +1,160 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * The class of exceptions raised by the engine as described in
+ * ECMA edition 3. See section 15.11.6 in particular.
+ */
+public class EcmaError extends RhinoException
+{
+    static final long serialVersionUID = -6261226256957286699L;
+
+    private String errorName;
+    private String errorMessage;
+
+    /**
+     * Create an exception with the specified detail message.
+     *
+     * Errors internal to the JavaScript engine will simply throw a
+     * RuntimeException.
+     *
+     * @param sourceName the name of the source reponsible for the error
+     * @param lineNumber the line number of the source
+     * @param columnNumber the columnNumber of the source (may be zero if
+     *                     unknown)
+     * @param lineSource the source of the line containing the error (may be
+     *                   null if unknown)
+     */
+    EcmaError(String errorName, String errorMessage,
+              String sourceName, int lineNumber,
+              String lineSource, int columnNumber)
+    {
+        recordErrorOrigin(sourceName, lineNumber, lineSource, columnNumber);
+        this.errorName = errorName;
+        this.errorMessage = errorMessage;
+    }
+
+    /**
+     * @deprecated EcmaError error instances should not be constructed
+     *             explicitly since they are generated by the engine.
+     */
+    public EcmaError(Scriptable nativeError, String sourceName,
+                     int lineNumber, int columnNumber, String lineSource)
+    {
+        this("InternalError", ScriptRuntime.toString(nativeError),
+             sourceName, lineNumber, lineSource, columnNumber);
+    }
+
+    public String details()
+    {
+        return errorName+": "+errorMessage;
+    }
+
+    /**
+     * Gets the name of the error.
+     *
+     * ECMA edition 3 defines the following
+     * errors: EvalError, RangeError, ReferenceError,
+     * SyntaxError, TypeError, and URIError. Additional error names
+     * may be added in the future.
+     *
+     * See ECMA edition 3, 15.11.7.9.
+     *
+     * @return the name of the error.
+     */
+    public String getName()
+    {
+        return errorName;
+    }
+
+    /**
+     * Gets the message corresponding to the error.
+     *
+     * See ECMA edition 3, 15.11.7.10.
+     *
+     * @return an implemenation-defined string describing the error.
+     */
+    public String getErrorMessage()
+    {
+        return errorMessage;
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#sourceName()} from the super class.
+     */
+    public String getSourceName()
+    {
+        return sourceName();
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#lineNumber()} from the super class.
+     */
+    public int getLineNumber()
+    {
+        return lineNumber();
+    }
+
+    /**
+     * @deprecated
+     * Use {@link RhinoException#columnNumber()} from the super class.
+     */
+    public int getColumnNumber() {
+        return columnNumber();
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#lineSource()} from the super class.
+     */
+    public String getLineSource() {
+        return lineSource();
+    }
+
+    /**
+     * @deprecated
+     * Always returns <b>null</b>.
+     */
+    public Scriptable getErrorObject()
+    {
+        return null;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ErrorReporter.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ErrorReporter.java
new file mode 100644
index 0000000..4649370
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ErrorReporter.java
@@ -0,0 +1,106 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * This is interface defines a protocol for the reporting of
+ * errors during JavaScript translation or execution.
+ *
+ * @author Norris Boyd
+ */
+
+public interface ErrorReporter {
+
+    /**
+     * Report a warning.
+     *
+     * The implementing class may choose to ignore the warning
+     * if it desires.
+     *
+     * @param message a String describing the warning
+     * @param sourceName a String describing the JavaScript source
+     * where the warning occured; typically a filename or URL
+     * @param line the line number associated with the warning
+     * @param lineSource the text of the line (may be null)
+     * @param lineOffset the offset into lineSource where problem was detected
+     */
+    void warning(String message, String sourceName, int line,
+                 String lineSource, int lineOffset);
+
+    /**
+     * Report an error.
+     *
+     * The implementing class is free to throw an exception if
+     * it desires.
+     *
+     * If execution has not yet begun, the JavaScript engine is
+     * free to find additional errors rather than terminating
+     * the translation. It will not execute a script that had
+     * errors, however.
+     *
+     * @param message a String describing the error
+     * @param sourceName a String describing the JavaScript source
+     * where the error occured; typically a filename or URL
+     * @param line the line number associated with the error
+     * @param lineSource the text of the line (may be null)
+     * @param lineOffset the offset into lineSource where problem was detected
+     */
+    void error(String message, String sourceName, int line,
+               String lineSource, int lineOffset);
+
+    /**
+     * Creates an EvaluatorException that may be thrown.
+     *
+     * runtimeErrors, unlike errors, will always terminate the
+     * current script.
+     *
+     * @param message a String describing the error
+     * @param sourceName a String describing the JavaScript source
+     * where the error occured; typically a filename or URL
+     * @param line the line number associated with the error
+     * @param lineSource the text of the line (may be null)
+     * @param lineOffset the offset into lineSource where problem was detected
+     * @return an EvaluatorException that will be thrown.
+     */
+    EvaluatorException runtimeError(String message, String sourceName,
+                                    int line, String lineSource,
+                                    int lineOffset);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Evaluator.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Evaluator.java
new file mode 100644
index 0000000..e222af3
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Evaluator.java
@@ -0,0 +1,118 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.List;
+
+/**
+ * Abstraction of evaluation, which can be implemented either by an
+ * interpreter or compiler.
+ */
+public interface Evaluator {
+
+    /**
+     * Compile the script or function from intermediate representation
+     * tree into an executable form.
+     *
+     * @param compilerEnv Compiler environment
+     * @param tree intermediate representation
+     * @param encodedSource encoding of the source code for decompilation
+     * @param returnFunction if true, compiling a function
+     * @return an opaque object that can be passed to either
+     *         createFunctionObject or createScriptObject, depending on the
+     *         value of returnFunction
+     */
+    public Object compile(CompilerEnvirons compilerEnv,
+                      ScriptOrFnNode tree,
+                      String encodedSource,
+                      boolean returnFunction);
+
+    /**
+     * Create a function object.
+     *
+     * @param cx Current context
+     * @param scope scope of the function
+     * @param bytecode opaque object returned by compile
+     * @param staticSecurityDomain security domain
+     * @return Function object that can be called
+     */
+    public Function createFunctionObject(Context cx, Scriptable scope,
+            Object bytecode, Object staticSecurityDomain);
+
+    /**
+     * Create a script object.
+     *
+     * @param bytecode opaque object returned by compile
+     * @param staticSecurityDomain security domain
+     * @return Script object that can be evaluated
+     */
+    public Script createScriptObject(Object bytecode,
+                                     Object staticSecurityDomain);
+
+    /**
+     * Capture stack information from the given exception.
+     * @param ex an exception thrown during execution
+     */
+    public void captureStackInfo(RhinoException ex);
+
+    /**
+     * Get the source position information by examining the stack.
+     * @param cx Context
+     * @param linep Array object of length >= 1; getSourcePositionFromStack
+     *              will assign the line number to linep[0].
+     * @return the name of the file or other source container
+     */
+    public String getSourcePositionFromStack(Context cx, int[] linep);
+
+    /**
+     * Given a native stack trace, patch it with script-specific source
+     * and line information
+     * @param ex exception
+     * @param nativeStackTrace the native stack trace
+     * @return patched stack trace
+     */
+    public String getPatchedStack(RhinoException ex,
+                                  String nativeStackTrace);
+
+    /**
+     * Get the script stack for the given exception
+     * @param ex exception from execution
+     * @return list of strings for the stack trace
+     */
+    public List getScriptStack(RhinoException ex);
+
+    /**
+     * Mark the given script to indicate it was created by a call to
+     * eval() or to a Function constructor.
+     * @param script script to mark as from eval
+     */
+    public void setEvalScriptFlag(Script script);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/EvaluatorException.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/EvaluatorException.java
new file mode 100644
index 0000000..7b4e7cc
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/EvaluatorException.java
@@ -0,0 +1,123 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+package org.mozilla.javascript;
+
+/**
+ * The class of exceptions thrown by the JavaScript engine.
+ */
+public class EvaluatorException extends RhinoException
+{
+    static final long serialVersionUID = -8743165779676009808L;
+
+    public EvaluatorException(String detail)
+    {
+        super(detail);
+    }
+
+    /**
+     * Create an exception with the specified detail message.
+     *
+     * Errors internal to the JavaScript engine will simply throw a
+     * RuntimeException.
+     *
+     * @param detail the error message
+     * @param sourceName the name of the source reponsible for the error
+     * @param lineNumber the line number of the source
+     */
+    public EvaluatorException(String detail, String sourceName,
+                              int lineNumber)
+    {
+        this(detail, sourceName, lineNumber, null, 0);
+    }
+
+    /**
+     * Create an exception with the specified detail message.
+     *
+     * Errors internal to the JavaScript engine will simply throw a
+     * RuntimeException.
+     *
+     * @param detail the error message
+     * @param sourceName the name of the source responsible for the error
+     * @param lineNumber the line number of the source
+     * @param columnNumber the columnNumber of the source (may be zero if
+     *                     unknown)
+     * @param lineSource the source of the line containing the error (may be
+     *                   null if unknown)
+     */
+    public EvaluatorException(String detail, String sourceName, int lineNumber,
+                              String lineSource, int columnNumber)
+    {
+        super(detail);
+        recordErrorOrigin(sourceName, lineNumber, lineSource, columnNumber);
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#sourceName()} from the super class.
+     */
+    public String getSourceName()
+    {
+        return sourceName();
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#lineNumber()} from the super class.
+     */
+    public int getLineNumber()
+    {
+        return lineNumber();
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#columnNumber()} from the super class.
+     */
+    public int getColumnNumber()
+    {
+        return columnNumber();
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#lineSource()} from the super class.
+     */
+    public String getLineSource()
+    {
+        return lineSource();
+    }
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Function.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Function.java
new file mode 100644
index 0000000..a4377e6
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Function.java
@@ -0,0 +1,84 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * This is interface that all functions in JavaScript must implement.
+ * The interface provides for calling functions and constructors.
+ *
+ * @see org.mozilla.javascript.Scriptable
+ * @author Norris Boyd
+ */
+
+public interface Function extends Scriptable, Callable
+{
+    /**
+     * Call the function.
+     *
+     * Note that the array of arguments is not guaranteed to have
+     * length greater than 0.
+     *
+     * @param cx the current Context for this thread
+     * @param scope the scope to execute the function relative to. This is
+     *              set to the value returned by getParentScope() except
+     *              when the function is called from a closure.
+     * @param thisObj the JavaScript <code>this</code> object
+     * @param args the array of arguments
+     * @return the result of the call
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args);
+
+    /**
+     * Call the function as a constructor.
+     *
+     * This method is invoked by the runtime in order to satisfy a use
+     * of the JavaScript <code>new</code> operator.  This method is
+     * expected to create a new object and return it.
+     *
+     * @param cx the current Context for this thread
+     * @param scope an enclosing scope of the caller except
+     *              when the function is called from a closure.
+     * @param args the array of arguments
+     * @return the allocated object
+     */
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/FunctionNode.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/FunctionNode.java
new file mode 100644
index 0000000..484167e
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/FunctionNode.java
@@ -0,0 +1,117 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class FunctionNode extends ScriptOrFnNode {
+
+    public FunctionNode(String name) {
+        super(Token.FUNCTION);
+        functionName = name;
+    }
+
+    public String getFunctionName() {
+        return functionName;
+    }
+
+    public boolean requiresActivation() {
+        return itsNeedsActivation;
+    }
+
+    public boolean getIgnoreDynamicScope() {
+        return itsIgnoreDynamicScope;
+    }
+    
+    public boolean isGenerator() {
+      return itsIsGenerator;
+    }
+
+    public void addResumptionPoint(Node target) {
+        if (generatorResumePoints == null)
+            generatorResumePoints = new ArrayList();
+        generatorResumePoints.add(target);
+    }
+
+    public ArrayList getResumptionPoints() {
+        return generatorResumePoints;
+    }
+
+    public HashMap getLiveLocals() {
+        return liveLocals;
+    }
+
+    public void addLiveLocals(Node node, int[] locals) {
+        if (liveLocals == null)
+            liveLocals = new HashMap();
+        liveLocals.put(node, locals);
+    }
+
+    /**
+     * There are three types of functions that can be defined. The first
+     * is a function statement. This is a function appearing as a top-level
+     * statement (i.e., not nested inside some other statement) in either a
+     * script or a function.
+     *
+     * The second is a function expression, which is a function appearing in
+     * an expression except for the third type, which is...
+     *
+     * The third type is a function expression where the expression is the
+     * top-level expression in an expression statement.
+     *
+     * The three types of functions have different treatment and must be
+     * distinguished.
+     */
+    public static final int FUNCTION_STATEMENT            = 1;
+    public static final int FUNCTION_EXPRESSION           = 2;
+    public static final int FUNCTION_EXPRESSION_STATEMENT = 3;
+
+    public int getFunctionType() {
+        return itsFunctionType;
+    }
+
+    String functionName;
+    int itsFunctionType;
+    boolean itsNeedsActivation;
+    boolean itsIgnoreDynamicScope;
+    boolean itsIsGenerator;
+    ArrayList generatorResumePoints;
+    HashMap liveLocals;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/FunctionObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/FunctionObject.java
new file mode 100644
index 0000000..8fa4e68
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/FunctionObject.java
@@ -0,0 +1,569 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   David C. Navas
+ *   Ted Neward
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.*;
+import java.io.*;
+
+public class FunctionObject extends BaseFunction
+{
+    static final long serialVersionUID = -5332312783643935019L;
+
+    /**
+     * Create a JavaScript function object from a Java method.
+     *
+     * <p>The <code>member</code> argument must be either a java.lang.reflect.Method
+     * or a java.lang.reflect.Constructor and must match one of two forms.<p>
+     *
+     * The first form is a member with zero or more parameters
+     * of the following types: Object, String, boolean, Scriptable,
+     * int, or double. The Long type is not supported
+     * because the double representation of a long (which is the
+     * EMCA-mandated storage type for Numbers) may lose precision.
+     * If the member is a Method, the return value must be void or one
+     * of the types allowed for parameters.<p>
+     *
+     * The runtime will perform appropriate conversions based
+     * upon the type of the parameter. A parameter type of
+     * Object specifies that no conversions are to be done. A parameter
+     * of type String will use Context.toString to convert arguments.
+     * Similarly, parameters of type double, boolean, and Scriptable
+     * will cause Context.toNumber, Context.toBoolean, and
+     * Context.toObject, respectively, to be called.<p>
+     *
+     * If the method is not static, the Java 'this' value will
+     * correspond to the JavaScript 'this' value. Any attempt
+     * to call the function with a 'this' value that is not
+     * of the right Java type will result in an error.<p>
+     *
+     * The second form is the variable arguments (or "varargs")
+     * form. If the FunctionObject will be used as a constructor,
+     * the member must have the following parameters
+     * <pre>
+     *      (Context cx, Object[] args, Function ctorObj,
+     *       boolean inNewExpr)</pre>
+     * and if it is a Method, be static and return an Object result.<p>
+     *
+     * Otherwise, if the FunctionObject will <i>not</i> be used to define a
+     * constructor, the member must be a static Method with parameters
+     *      (Context cx, Scriptable thisObj, Object[] args,
+     *       Function funObj) </pre>
+     * <pre>
+     * and an Object result.<p>
+     *
+     * When the function varargs form is called as part of a function call,
+     * the <code>args</code> parameter contains the
+     * arguments, with <code>thisObj</code>
+     * set to the JavaScript 'this' value. <code>funObj</code>
+     * is the function object for the invoked function.<p>
+     *
+     * When the constructor varargs form is called or invoked while evaluating
+     * a <code>new</code> expression, <code>args</code> contains the
+     * arguments, <code>ctorObj</code> refers to this FunctionObject, and
+     * <code>inNewExpr</code> is true if and only if  a <code>new</code>
+     * expression caused the call. This supports defining a function that
+     * has different behavior when called as a constructor than when
+     * invoked as a normal function call. (For example, the Boolean
+     * constructor, when called as a function,
+     * will convert to boolean rather than creating a new object.)<p>
+     *
+     * @param name the name of the function
+     * @param methodOrConstructor a java.lang.reflect.Method or a java.lang.reflect.Constructor
+     *                            that defines the object
+     * @param scope enclosing scope of function
+     * @see org.mozilla.javascript.Scriptable
+     */
+    public FunctionObject(String name, Member methodOrConstructor,
+                          Scriptable scope)
+    {
+        if (methodOrConstructor instanceof Constructor) {
+            member = new MemberBox((Constructor) methodOrConstructor);
+            isStatic = true; // well, doesn't take a 'this'
+        } else {
+            member = new MemberBox((Method) methodOrConstructor);
+            isStatic = member.isStatic();
+        }
+        String methodName = member.getName();
+        this.functionName = name;
+        Class[] types = member.argTypes;
+        int arity = types.length;
+        if (arity == 4 && (types[1].isArray() || types[2].isArray())) {
+            // Either variable args or an error.
+            if (types[1].isArray()) {
+                if (!isStatic ||
+                    types[0] != ScriptRuntime.ContextClass ||
+                    types[1].getComponentType() != ScriptRuntime.ObjectClass ||
+                    types[2] != ScriptRuntime.FunctionClass ||
+                    types[3] != Boolean.TYPE)
+                {
+                    throw Context.reportRuntimeError1(
+                        "msg.varargs.ctor", methodName);
+                }
+                parmsLength = VARARGS_CTOR;
+            } else {
+                if (!isStatic ||
+                    types[0] != ScriptRuntime.ContextClass ||
+                    types[1] != ScriptRuntime.ScriptableClass ||
+                    types[2].getComponentType() != ScriptRuntime.ObjectClass ||
+                    types[3] != ScriptRuntime.FunctionClass)
+                {
+                    throw Context.reportRuntimeError1(
+                        "msg.varargs.fun", methodName);
+                }
+                parmsLength = VARARGS_METHOD;
+            }
+        } else {
+            parmsLength = arity;
+            if (arity > 0) {
+                typeTags = new byte[arity];
+                for (int i = 0; i != arity; ++i) {
+                    int tag = getTypeTag(types[i]);
+                    if (tag == JAVA_UNSUPPORTED_TYPE) {
+                        throw Context.reportRuntimeError2(
+                            "msg.bad.parms", types[i].getName(), methodName);
+                    }
+                    typeTags[i] = (byte)tag;
+                }
+            }
+        }
+
+        if (member.isMethod()) {
+            Method method = member.method();
+            Class returnType = method.getReturnType();
+            if (returnType == Void.TYPE) {
+                hasVoidReturn = true;
+            } else {
+                returnTypeTag = getTypeTag(returnType);
+            }
+        } else {
+            Class ctorType = member.getDeclaringClass();
+            if (!ScriptRuntime.ScriptableClass.isAssignableFrom(ctorType)) {
+                throw Context.reportRuntimeError1(
+                    "msg.bad.ctor.return", ctorType.getName());
+            }
+        }
+
+        ScriptRuntime.setFunctionProtoAndParent(this, scope);
+    }
+
+    /**
+     * @return One of <tt>JAVA_*_TYPE</tt> constants to indicate desired type
+     *         or {@link #JAVA_UNSUPPORTED_TYPE} if the convertion is not
+     *         possible
+     */
+    public static int getTypeTag(Class type)
+    {
+        if (type == ScriptRuntime.StringClass)
+            return JAVA_STRING_TYPE;
+        if (type == ScriptRuntime.IntegerClass || type == Integer.TYPE)
+            return JAVA_INT_TYPE;
+        if (type == ScriptRuntime.BooleanClass || type == Boolean.TYPE)
+            return JAVA_BOOLEAN_TYPE;
+        if (type == ScriptRuntime.DoubleClass || type == Double.TYPE)
+            return JAVA_DOUBLE_TYPE;
+        if (ScriptRuntime.ScriptableClass.isAssignableFrom(type))
+            return JAVA_SCRIPTABLE_TYPE;
+        if (type == ScriptRuntime.ObjectClass)
+            return JAVA_OBJECT_TYPE;
+
+        // Note that the long type is not supported; see the javadoc for
+        // the constructor for this class
+
+        return JAVA_UNSUPPORTED_TYPE;
+    }
+
+    public static Object convertArg(Context cx, Scriptable scope,
+                                    Object arg, int typeTag)
+    {
+        switch (typeTag) {
+          case JAVA_STRING_TYPE:
+              if (arg instanceof String)
+                return arg;
+            return ScriptRuntime.toString(arg);
+          case JAVA_INT_TYPE:
+              if (arg instanceof Integer)
+                return arg;
+            return new Integer(ScriptRuntime.toInt32(arg));
+          case JAVA_BOOLEAN_TYPE:
+              if (arg instanceof Boolean)
+                return arg;
+            return ScriptRuntime.toBoolean(arg) ? Boolean.TRUE
+                                                : Boolean.FALSE;
+          case JAVA_DOUBLE_TYPE:
+            if (arg instanceof Double)
+                return arg;
+            return new Double(ScriptRuntime.toNumber(arg));
+          case JAVA_SCRIPTABLE_TYPE:
+            if (arg instanceof Scriptable)
+                return arg;
+            return ScriptRuntime.toObject(cx, scope, arg);
+          case JAVA_OBJECT_TYPE:
+            return arg;
+          default:
+            throw new IllegalArgumentException();
+        }
+    }
+
+    /**
+     * Return the value defined by  the method used to construct the object
+     * (number of parameters of the method, or 1 if the method is a "varargs"
+     * form).
+     */
+    public int getArity() {
+        return parmsLength < 0 ? 1 : parmsLength;
+    }
+
+    /**
+     * Return the same value as {@link #getArity()}.
+     */
+    public int getLength() {
+        return getArity();
+    }
+
+    public String getFunctionName()
+    {
+        return (functionName == null) ? "" : functionName;
+    }
+
+    /**
+     * Get Java method or constructor this function represent.
+     */
+    public Member getMethodOrConstructor()
+    {
+        if (member.isMethod()) {
+            return member.method();
+        } else {
+            return member.ctor();
+        }
+    }
+
+    static Method findSingleMethod(Method[] methods, String name)
+    {
+        Method found = null;
+        for (int i = 0, N = methods.length; i != N; ++i) {
+            Method method = methods[i];
+            if (method != null && name.equals(method.getName())) {
+                if (found != null) {
+                    throw Context.reportRuntimeError2(
+                        "msg.no.overload", name,
+                        method.getDeclaringClass().getName());
+                }
+                found = method;
+            }
+        }
+        return found;
+    }
+
+    /**
+     * Returns all public methods declared by the specified class. This excludes
+     * inherited methods.
+     *
+     * @param clazz the class from which to pull public declared methods
+     * @return the public methods declared in the specified class
+     * @see Class#getDeclaredMethods()
+     */
+    static Method[] getMethodList(Class clazz) {
+        Method[] methods = null;
+        try {
+            // getDeclaredMethods may be rejected by the security manager
+            // but getMethods is more expensive
+            if (!sawSecurityException)
+                methods = clazz.getDeclaredMethods();
+        } catch (SecurityException e) {
+            // If we get an exception once, give up on getDeclaredMethods
+            sawSecurityException = true;
+        }
+        if (methods == null) {
+            methods = clazz.getMethods();
+        }
+        int count = 0;
+        for (int i=0; i < methods.length; i++) {
+            if (sawSecurityException
+                ? methods[i].getDeclaringClass() != clazz
+                : !Modifier.isPublic(methods[i].getModifiers()))
+            {
+                methods[i] = null;
+            } else {
+                count++;
+            }
+        }
+        Method[] result = new Method[count];
+        int j=0;
+        for (int i=0; i < methods.length; i++) {
+            if (methods[i] != null)
+                result[j++] = methods[i];
+        }
+        return result;
+    }
+
+    /**
+     * Define this function as a JavaScript constructor.
+     * <p>
+     * Sets up the "prototype" and "constructor" properties. Also
+     * calls setParent and setPrototype with appropriate values.
+     * Then adds the function object as a property of the given scope, using
+     *      <code>prototype.getClassName()</code>
+     * as the name of the property.
+     *
+     * @param scope the scope in which to define the constructor (typically
+     *              the global object)
+     * @param prototype the prototype object
+     * @see org.mozilla.javascript.Scriptable#setParentScope
+     * @see org.mozilla.javascript.Scriptable#setPrototype
+     * @see org.mozilla.javascript.Scriptable#getClassName
+     */
+    public void addAsConstructor(Scriptable scope, Scriptable prototype)
+    {
+        initAsConstructor(scope, prototype);
+        defineProperty(scope, prototype.getClassName(),
+                       this, ScriptableObject.DONTENUM);
+    }
+
+    void initAsConstructor(Scriptable scope, Scriptable prototype)
+    {
+        ScriptRuntime.setFunctionProtoAndParent(this, scope);
+        setImmunePrototypeProperty(prototype);
+
+        prototype.setParentScope(this);
+
+        defineProperty(prototype, "constructor", this,
+                       ScriptableObject.DONTENUM  |
+                       ScriptableObject.PERMANENT |
+                       ScriptableObject.READONLY);
+        setParentScope(scope);
+    }
+
+    /**
+     * @deprecated Use {@link #getTypeTag(Class)}
+     * and {@link #convertArg(Context, Scriptable, Object, int)}
+     * for type convertion.
+     */
+    public static Object convertArg(Context cx, Scriptable scope,
+                                    Object arg, Class desired)
+    {
+        int tag = getTypeTag(desired);
+        if (tag == JAVA_UNSUPPORTED_TYPE) {
+            throw Context.reportRuntimeError1
+                ("msg.cant.convert", desired.getName());
+        }
+        return convertArg(cx, scope, arg, tag);
+    }
+
+    /**
+     * Performs conversions on argument types if needed and
+     * invokes the underlying Java method or constructor.
+     * <p>
+     * Implements Function.call.
+     *
+     * @see org.mozilla.javascript.Function#call(
+     *          Context, Scriptable, Scriptable, Object[])
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        Object result;
+        boolean checkMethodResult = false;
+
+        if (parmsLength < 0) {
+            if (parmsLength == VARARGS_METHOD) {
+                Object[] invokeArgs = { cx, thisObj, args, this };
+                result = member.invoke(null, invokeArgs);
+                checkMethodResult = true;
+            } else {
+                boolean inNewExpr = (thisObj == null);
+                Boolean b = inNewExpr ? Boolean.TRUE : Boolean.FALSE;
+                Object[] invokeArgs = { cx, args, this, b };
+                result = (member.isCtor())
+                         ? member.newInstance(invokeArgs)
+                         : member.invoke(null, invokeArgs);
+            }
+
+        } else {
+            if (!isStatic) {
+                Class clazz = member.getDeclaringClass();
+                if (!clazz.isInstance(thisObj)) {
+                    boolean compatible = false;
+                    if (thisObj == scope) {
+                        Scriptable parentScope = getParentScope();
+                        if (scope != parentScope) {
+                            // Call with dynamic scope for standalone function,
+                            // use parentScope as thisObj
+                            compatible = clazz.isInstance(parentScope);
+                            if (compatible) {
+                                thisObj = parentScope;
+                            }
+                        }
+                    }
+                    if (!compatible) {
+                        // Couldn't find an object to call this on.
+                        throw ScriptRuntime.typeError1("msg.incompat.call",
+                                                       functionName);
+                    }
+                }
+            }
+
+            Object[] invokeArgs;
+            if (parmsLength == args.length) {
+                // Do not allocate new argument array if java arguments are
+                // the same as the original js ones.
+                invokeArgs = args;
+                for (int i = 0; i != parmsLength; ++i) {
+                    Object arg = args[i];
+                    Object converted = convertArg(cx, scope, arg, typeTags[i]);
+                    if (arg != converted) {
+                        if (invokeArgs == args) {
+                            invokeArgs = args.clone();
+                        }
+                        invokeArgs[i] = converted;
+                    }
+                }
+            } else if (parmsLength == 0) {
+                invokeArgs = ScriptRuntime.emptyArgs;
+            } else {
+                invokeArgs = new Object[parmsLength];
+                for (int i = 0; i != parmsLength; ++i) {
+                    Object arg = (i < args.length)
+                                 ? args[i]
+                                 : Undefined.instance;
+                    invokeArgs[i] = convertArg(cx, scope, arg, typeTags[i]);
+                }
+            }
+
+            if (member.isMethod()) {
+                result = member.invoke(thisObj, invokeArgs);
+                checkMethodResult = true;
+            } else {
+                result = member.newInstance(invokeArgs);
+            }
+
+        }
+
+        if (checkMethodResult) {
+            if (hasVoidReturn) {
+                result = Undefined.instance;
+            } else if (returnTypeTag == JAVA_UNSUPPORTED_TYPE) {
+                result = cx.getWrapFactory().wrap(cx, scope, result, null);
+            }
+            // XXX: the code assumes that if returnTypeTag == JAVA_OBJECT_TYPE
+            // then the Java method did a proper job of converting the
+            // result to JS primitive or Scriptable to avoid
+            // potentially costly Context.javaToJS call.
+        }
+
+        return result;
+    }
+
+    /**
+     * Return new {@link Scriptable} instance using the default
+     * constructor for the class of the underlying Java method.
+     * Return null to indicate that the call method should be used to create
+     * new objects.
+     */
+    public Scriptable createObject(Context cx, Scriptable scope) {
+        if (member.isCtor() || parmsLength == VARARGS_CTOR) {
+            return null;
+        }
+        Scriptable result;
+        try {
+            result = (Scriptable) member.getDeclaringClass().newInstance();
+        } catch (Exception ex) {
+            throw Context.throwAsScriptRuntimeEx(ex);
+        }
+
+        result.setPrototype(getClassPrototype());
+        result.setParentScope(getParentScope());
+        return result;
+    }
+
+    boolean isVarArgsMethod() {
+        return parmsLength == VARARGS_METHOD;
+    }
+
+    boolean isVarArgsConstructor() {
+        return parmsLength == VARARGS_CTOR;
+    }
+
+    private void readObject(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        in.defaultReadObject();
+        if (parmsLength > 0) {
+            Class[] types = member.argTypes;
+            typeTags = new byte[parmsLength];
+            for (int i = 0; i != parmsLength; ++i) {
+                typeTags[i] = (byte)getTypeTag(types[i]);
+            }
+        }
+        if (member.isMethod()) {
+            Method method = member.method();
+            Class returnType = method.getReturnType();
+            if (returnType == Void.TYPE) {
+                hasVoidReturn = true;
+            } else {
+                returnTypeTag = getTypeTag(returnType);
+            }
+        }
+    }
+
+    private static final short VARARGS_METHOD = -1;
+    private static final short VARARGS_CTOR =   -2;
+
+    private static boolean sawSecurityException;
+
+    public static final int JAVA_UNSUPPORTED_TYPE = 0;
+    public static final int JAVA_STRING_TYPE      = 1;
+    public static final int JAVA_INT_TYPE         = 2;
+    public static final int JAVA_BOOLEAN_TYPE     = 3;
+    public static final int JAVA_DOUBLE_TYPE      = 4;
+    public static final int JAVA_SCRIPTABLE_TYPE  = 5;
+    public static final int JAVA_OBJECT_TYPE      = 6;
+
+    MemberBox member;
+    private String functionName;
+    private transient byte[] typeTags;
+    private int parmsLength;
+    private transient boolean hasVoidReturn;
+    private transient int returnTypeTag;
+    private boolean isStatic;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/GeneratedClassLoader.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/GeneratedClassLoader.java
new file mode 100644
index 0000000..0f73615
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/GeneratedClassLoader.java
@@ -0,0 +1,66 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * Interface to define classes from generated byte code.
+ */
+public interface GeneratedClassLoader {
+
+    /**
+     * Define a new Java class.
+     * Classes created via this method should have the same class loader.
+     *
+     * @param name fully qualified class name
+     * @param data class byte code
+     * @return new class object
+     */
+    public Class defineClass(String name, byte[] data);
+
+    /**
+     * Link the given class.
+     *
+     * @param cl Class instance returned from the previous call to
+     *        {@link #defineClass(String, byte[])}
+     * @see java.lang.ClassLoader
+     */
+    public void linkClass(Class cl);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IRFactory.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IRFactory.java
new file mode 100644
index 0000000..1f51cb1
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IRFactory.java
@@ -0,0 +1,1607 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Ethan Hugg
+ *   Bob Jervis
+ *   Terry Lucas
+ *   Milen Nankov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.List;
+import java.util.ArrayList;
+
+/**
+ * This class allows the creation of nodes, and follows the Factory pattern.
+ *
+ * @see Node
+ * @author Mike McCabe
+ * @author Norris Boyd
+ */
+final class IRFactory
+{
+    IRFactory(Parser parser)
+    {
+        this.parser = parser;
+    }
+
+    ScriptOrFnNode createScript()
+    {
+        return new ScriptOrFnNode(Token.SCRIPT);
+    }
+
+    /**
+     * Script (for associating file/url names with toplevel scripts.)
+     */
+    void initScript(ScriptOrFnNode scriptNode, Node body)
+    {
+        Node children = body.getFirstChild();
+        if (children != null) { scriptNode.addChildrenToBack(children); }
+    }
+
+    /**
+     * Leaf
+     */
+    Node createLeaf(int nodeType)
+    {
+        return new Node(nodeType);
+    }
+
+    /**
+     * Statement leaf nodes.
+     */
+
+    Node createSwitch(Node expr, int lineno)
+    {
+        //
+        // The switch will be rewritten from:
+        //
+        // switch (expr) {
+        //   case test1: statements1;
+        //   ...
+        //   default: statementsDefault;
+        //   ...
+        //   case testN: statementsN;
+        // }
+        //
+        // to:
+        //
+        // {
+        //     switch (expr) {
+        //       case test1: goto label1;
+        //       ...
+        //       case testN: goto labelN;
+        //     }
+        //     goto labelDefault;
+        //   label1:
+        //     statements1;
+        //   ...
+        //   labelDefault:
+        //     statementsDefault;
+        //   ...
+        //   labelN:
+        //     statementsN;
+        //   breakLabel:
+        // }
+        //
+        // where inside switch each "break;" without label will be replaced
+        // by "goto breakLabel".
+        //
+        // If the original switch does not have the default label, then
+        // the transformed code would contain after the switch instead of
+        //     goto labelDefault;
+        // the following goto:
+        //     goto breakLabel;
+        //
+
+        Node.Jump switchNode = new Node.Jump(Token.SWITCH, expr, lineno);
+        Node block = new Node(Token.BLOCK, switchNode);
+        return block;
+    }
+
+    /**
+     * If caseExpression argument is null it indicate default label.
+     */
+    void addSwitchCase(Node switchBlock, Node caseExpression, Node statements)
+    {
+        if (switchBlock.getType() != Token.BLOCK) throw Kit.codeBug();
+        Node.Jump switchNode = (Node.Jump)switchBlock.getFirstChild();
+        if (switchNode.getType() != Token.SWITCH) throw Kit.codeBug();
+
+        Node gotoTarget = Node.newTarget();
+        if (caseExpression != null) {
+            Node.Jump caseNode = new Node.Jump(Token.CASE, caseExpression);
+            caseNode.target = gotoTarget;
+            switchNode.addChildToBack(caseNode);
+        } else {
+            switchNode.setDefault(gotoTarget);
+        }
+        switchBlock.addChildToBack(gotoTarget);
+        switchBlock.addChildToBack(statements);
+    }
+
+    void closeSwitch(Node switchBlock)
+    {
+        if (switchBlock.getType() != Token.BLOCK) throw Kit.codeBug();
+        Node.Jump switchNode = (Node.Jump)switchBlock.getFirstChild();
+        if (switchNode.getType() != Token.SWITCH) throw Kit.codeBug();
+
+        Node switchBreakTarget = Node.newTarget();
+        // switchNode.target is only used by NodeTransformer
+        // to detect switch end
+        switchNode.target = switchBreakTarget;
+
+        Node defaultTarget = switchNode.getDefault();
+        if (defaultTarget == null) {
+            defaultTarget = switchBreakTarget;
+        }
+
+        switchBlock.addChildAfter(makeJump(Token.GOTO, defaultTarget),
+                                  switchNode);
+        switchBlock.addChildToBack(switchBreakTarget);
+    }
+
+    Node createVariables(int token, int lineno)
+    {
+        return new Node(token, lineno);
+    }
+
+    Node createExprStatement(Node expr, int lineno)
+    {
+        int type;
+        if (parser.insideFunction()) {
+            type = Token.EXPR_VOID;
+        } else {
+            type = Token.EXPR_RESULT;
+        }
+        return new Node(type, expr, lineno);
+    }
+
+    Node createExprStatementNoReturn(Node expr, int lineno)
+    {
+        return new Node(Token.EXPR_VOID, expr, lineno);
+    }
+
+    Node createDefaultNamespace(Node expr, int lineno)
+    {
+        // default xml namespace requires activation
+        setRequiresActivation();
+        Node n = createUnary(Token.DEFAULTNAMESPACE, expr);
+        Node result = createExprStatement(n, lineno);
+        return result;
+    }
+
+    /**
+     * Name
+     */
+    Node createName(String name)
+    {
+        checkActivationName(name, Token.NAME);
+        return Node.newString(Token.NAME, name);
+    }
+    
+    private Node createName(int type, String name, Node child)
+    {
+        Node result = createName(name);
+        result.setType(type);
+        if (child != null)
+            result.addChildToBack(child);
+        return result;
+    }
+
+    /**
+     * String (for literals)
+     */
+    Node createString(String string)
+    {
+        return Node.newString(string);
+    }
+
+    /**
+     * Number (for literals)
+     */
+    Node createNumber(double number)
+    {
+        return Node.newNumber(number);
+    }
+
+    /**
+     * Catch clause of try/catch/finally
+     * @param varName the name of the variable to bind to the exception
+     * @param catchCond the condition under which to catch the exception.
+     *                  May be null if no condition is given.
+     * @param stmts the statements in the catch clause
+     * @param lineno the starting line number of the catch clause
+     */
+    Node createCatch(String varName, Node catchCond, Node stmts, int lineno)
+    {
+        if (catchCond == null) {
+            catchCond = new Node(Token.EMPTY);
+        }
+        return new Node(Token.CATCH, createName(varName),
+                        catchCond, stmts, lineno);
+    }
+
+    /**
+     * Throw
+     */
+    Node createThrow(Node expr, int lineno)
+    {
+        return new Node(Token.THROW, expr, lineno);
+    }
+
+    /**
+     * Return
+     */
+    Node createReturn(Node expr, int lineno)
+    {
+        return expr == null
+            ? new Node(Token.RETURN, lineno)
+            : new Node(Token.RETURN, expr, lineno);
+    }
+
+    /**
+     * Debugger
+     */
+    Node createDebugger(int lineno)
+    {
+        return new Node(Token.DEBUGGER,  lineno);
+    }
+  
+    /**
+     * Label
+     */
+    Node createLabel(int lineno)
+    {
+        return new Node.Jump(Token.LABEL, lineno);
+    }
+
+    Node getLabelLoop(Node label)
+    {
+        return ((Node.Jump)label).getLoop();
+    }
+
+    /**
+     * Label
+     */
+    Node createLabeledStatement(Node labelArg, Node statement)
+    {
+        Node.Jump label = (Node.Jump)labelArg;
+
+        // Make a target and put it _after_ the statement
+        // node.  And in the LABEL node, so breaks get the
+        // right target.
+
+        Node breakTarget = Node.newTarget();
+        Node block = new Node(Token.BLOCK, label, statement, breakTarget);
+        label.target = breakTarget;
+
+        return block;
+    }
+
+    /**
+     * Break (possibly labeled)
+     */
+    Node createBreak(Node breakStatement, int lineno)
+    {
+        Node.Jump n = new Node.Jump(Token.BREAK, lineno);
+        Node.Jump jumpStatement;
+        int t = breakStatement.getType();
+        if (t == Token.LOOP || t == Token.LABEL) {
+            jumpStatement = (Node.Jump)breakStatement;
+        } else if (t == Token.BLOCK
+                   && breakStatement.getFirstChild().getType() == Token.SWITCH)
+        {
+            jumpStatement = (Node.Jump)breakStatement.getFirstChild();
+        } else {
+            throw Kit.codeBug();
+        }
+        n.setJumpStatement(jumpStatement);
+        return n;
+    }
+
+    /**
+     * Continue (possibly labeled)
+     */
+    Node createContinue(Node loop, int lineno)
+    {
+        if (loop.getType() != Token.LOOP) Kit.codeBug();
+        Node.Jump n = new Node.Jump(Token.CONTINUE, lineno);
+        n.setJumpStatement((Node.Jump)loop);
+        return n;
+    }
+
+    /**
+     * Statement block
+     * Creates the empty statement block
+     * Must make subsequent calls to add statements to the node
+     */
+    Node createBlock(int lineno)
+    {
+        return new Node(Token.BLOCK, lineno);
+    }
+
+    FunctionNode createFunction(String name)
+    {
+        return new FunctionNode(name);
+    }
+
+    Node initFunction(FunctionNode fnNode, int functionIndex,
+                      Node statements, int functionType)
+    {
+        fnNode.itsFunctionType = functionType;
+        fnNode.addChildToBack(statements);
+
+        int functionCount = fnNode.getFunctionCount();
+        if (functionCount != 0) {
+            // Functions containing other functions require activation objects
+            fnNode.itsNeedsActivation = true;
+        }
+
+        if (functionType == FunctionNode.FUNCTION_EXPRESSION) {
+            String name = fnNode.getFunctionName();
+            if (name != null && name.length() != 0) {
+                // A function expression needs to have its name as a
+                // variable (if it isn't already allocated as a variable).
+                // See ECMA Ch. 13.  We add code to the beginning of the
+                // function to initialize a local variable of the
+                // function's name to the function value.
+                Node setFn = new Node(Token.EXPR_VOID,
+                                 new Node(Token.SETNAME,
+                                     Node.newString(Token.BINDNAME, name),
+                                     new Node(Token.THISFN)));
+                statements.addChildrenToFront(setFn);
+            }
+        }
+
+        // Add return to end if needed.
+        Node lastStmt = statements.getLastChild();
+        if (lastStmt == null || lastStmt.getType() != Token.RETURN) {
+            statements.addChildToBack(new Node(Token.RETURN));
+        }
+
+        Node result = Node.newString(Token.FUNCTION,
+                                     fnNode.getFunctionName());
+        result.putIntProp(Node.FUNCTION_PROP, functionIndex);
+        return result;
+    }
+
+    /**
+     * Add a child to the back of the given node.  This function
+     * breaks the Factory abstraction, but it removes a requirement
+     * from implementors of Node.
+     */
+    void addChildToBack(Node parent, Node child)
+    {
+        parent.addChildToBack(child);
+    }
+
+    /**
+     * Create a node that can be used to hold lexically scoped variable
+     * definitions (via let declarations).
+     * 
+     * @param token the token of the node to create
+     * @param lineno line number of source
+     * @return the created node
+     */
+    Node createScopeNode(int token, int lineno) {
+        return new Node.Scope(token, lineno);
+    }
+
+    /**
+     * Create loop node. The parser will later call
+     * createWhile|createDoWhile|createFor|createForIn
+     * to finish loop generation.
+     */
+    Node createLoopNode(Node loopLabel, int lineno)
+    {
+        Node.Jump result = new Node.Scope(Token.LOOP, lineno);
+        if (loopLabel != null) {
+            ((Node.Jump)loopLabel).setLoop(result);
+        }
+        return result;
+    }
+
+    /**
+     * While
+     */
+    Node createWhile(Node loop, Node cond, Node body)
+    {
+        return createLoop((Node.Jump)loop, LOOP_WHILE, body, cond,
+                          null, null);
+    }
+
+    /**
+     * DoWhile
+     */
+    Node createDoWhile(Node loop, Node body, Node cond)
+    {
+        return createLoop((Node.Jump)loop, LOOP_DO_WHILE, body, cond,
+                          null, null);
+    }
+
+    /**
+     * For
+     */
+    Node createFor(Node loop, Node init, Node test, Node incr, Node body)
+    {
+        if (init.getType() == Token.LET) {
+            // rewrite "for (let i=s; i < N; i++)..." as 
+            // "let (i=s) { for (; i < N; i++)..." so that "s" is evaluated
+            // outside the scope of the for.
+            Node.Scope let = Node.Scope.splitScope((Node.Scope)loop);
+            let.setType(Token.LET);
+            let.addChildrenToBack(init);
+            let.addChildToBack(createLoop((Node.Jump)loop, LOOP_FOR, body, test,
+                new Node(Token.EMPTY), incr));
+            return let;
+        }
+        return createLoop((Node.Jump)loop, LOOP_FOR, body, test, init, incr);
+    }
+
+    private Node createLoop(Node.Jump loop, int loopType, Node body, Node cond,
+                            Node init, Node incr)
+    {
+        Node bodyTarget = Node.newTarget();
+        Node condTarget = Node.newTarget();
+        if (loopType == LOOP_FOR && cond.getType() == Token.EMPTY) {
+            cond = new Node(Token.TRUE);
+        }
+        Node.Jump IFEQ = new Node.Jump(Token.IFEQ, cond);
+        IFEQ.target = bodyTarget;
+        Node breakTarget = Node.newTarget();
+
+        loop.addChildToBack(bodyTarget);
+        loop.addChildrenToBack(body);
+        if (loopType == LOOP_WHILE || loopType == LOOP_FOR) {
+            // propagate lineno to condition
+            loop.addChildrenToBack(new Node(Token.EMPTY, loop.getLineno()));
+        }
+        loop.addChildToBack(condTarget);
+        loop.addChildToBack(IFEQ);
+        loop.addChildToBack(breakTarget);
+
+        loop.target = breakTarget;
+        Node continueTarget = condTarget;
+
+        if (loopType == LOOP_WHILE || loopType == LOOP_FOR) {
+            // Just add a GOTO to the condition in the do..while
+            loop.addChildToFront(makeJump(Token.GOTO, condTarget));
+
+            if (loopType == LOOP_FOR) {
+                int initType = init.getType();
+                if (initType != Token.EMPTY) {
+                    if (initType != Token.VAR && initType != Token.LET) {
+                        init = new Node(Token.EXPR_VOID, init);
+                    }
+                    loop.addChildToFront(init);
+                }
+                Node incrTarget = Node.newTarget();
+                loop.addChildAfter(incrTarget, body);
+                if (incr.getType() != Token.EMPTY) {
+                    incr = new Node(Token.EXPR_VOID, incr);
+                    loop.addChildAfter(incr, incrTarget);
+                }
+                continueTarget = incrTarget;
+            }
+        }
+
+        loop.setContinue(continueTarget);
+
+        return loop;
+    }
+
+    /**
+     * For .. In
+     *
+     */
+    Node createForIn(int declType, Node loop, Node lhs, Node obj, Node body,
+                     boolean isForEach)
+    {
+        int destructuring = -1;
+        int destructuringLen = 0;
+        Node lvalue;
+        int type = lhs.getType();
+        if (type == Token.VAR || type == Token.LET) {
+            Node lastChild = lhs.getLastChild();
+            if (lhs.getFirstChild() != lastChild) {
+                /*
+                 * check that there was only one variable given.
+                 * we can't do this in the parser, because then the
+                 * parser would have to know something about the
+                 * 'init' node of the for-in loop.
+                 */
+                parser.reportError("msg.mult.index");
+            }
+            if (lastChild.getType() == Token.ARRAYLIT ||
+                lastChild.getType() == Token.OBJECTLIT)
+            {
+                type = destructuring = lastChild.getType();
+                lvalue = lastChild;
+                destructuringLen = lastChild.getIntProp(
+                    Node.DESTRUCTURING_ARRAY_LENGTH, 0);
+            } else if (lastChild.getType() == Token.NAME) {
+                lvalue = Node.newString(Token.NAME, lastChild.getString());
+            } else {
+                parser.reportError("msg.bad.for.in.lhs");
+                return obj;
+            }
+        } else if (type == Token.ARRAYLIT || type == Token.OBJECTLIT) {
+            destructuring = type;
+            lvalue = lhs;
+            destructuringLen = lhs.getIntProp(Node.DESTRUCTURING_ARRAY_LENGTH, 0);
+        } else {
+            lvalue = makeReference(lhs);
+            if (lvalue == null) {
+                parser.reportError("msg.bad.for.in.lhs");
+                return obj;
+            }
+        }
+
+        Node localBlock = new Node(Token.LOCAL_BLOCK);
+        int initType = (isForEach)           ? Token.ENUM_INIT_VALUES :
+                       (destructuring != -1) ? Token.ENUM_INIT_ARRAY :
+                                               Token.ENUM_INIT_KEYS;
+        Node init = new Node(initType, obj);
+        init.putProp(Node.LOCAL_BLOCK_PROP, localBlock);
+        Node cond = new Node(Token.ENUM_NEXT);
+        cond.putProp(Node.LOCAL_BLOCK_PROP, localBlock);
+        Node id = new Node(Token.ENUM_ID);
+        id.putProp(Node.LOCAL_BLOCK_PROP, localBlock);
+
+        Node newBody = new Node(Token.BLOCK);
+        Node assign;
+        if (destructuring != -1) {
+            assign = createDestructuringAssignment(declType, lvalue, id);
+            if (!isForEach && (destructuring == Token.OBJECTLIT ||
+                               destructuringLen != 2))
+            {
+                // destructuring assignment is only allowed in for..each or
+                // with an array type of length 2 (to hold key and value)
+                parser.reportError("msg.bad.for.in.destruct");
+            }
+        } else {
+            assign = simpleAssignment(lvalue, id);
+        }
+        newBody.addChildToBack(new Node(Token.EXPR_VOID, assign));
+        newBody.addChildToBack(body);
+
+        loop = createWhile(loop, cond, newBody);
+        loop.addChildToFront(init);
+        if (type == Token.VAR || type == Token.LET)
+            loop.addChildToFront(lhs);
+        localBlock.addChildToBack(loop);
+
+        return localBlock;
+    }
+
+    /**
+     * Try/Catch/Finally
+     *
+     * The IRFactory tries to express as much as possible in the tree;
+     * the responsibilities remaining for Codegen are to add the Java
+     * handlers: (Either (but not both) of TARGET and FINALLY might not
+     * be defined)
+
+     * - a catch handler for javascript exceptions that unwraps the
+     * exception onto the stack and GOTOes to the catch target
+
+     * - a finally handler
+
+     * ... and a goto to GOTO around these handlers.
+     */
+    Node createTryCatchFinally(Node tryBlock, Node catchBlocks,
+                               Node finallyBlock, int lineno)
+    {
+        boolean hasFinally = (finallyBlock != null)
+                             && (finallyBlock.getType() != Token.BLOCK
+                                 || finallyBlock.hasChildren());
+
+        // short circuit
+        if (tryBlock.getType() == Token.BLOCK && !tryBlock.hasChildren()
+            && !hasFinally)
+        {
+            return tryBlock;
+        }
+
+        boolean hasCatch = catchBlocks.hasChildren();
+
+        // short circuit
+        if (!hasFinally && !hasCatch)  {
+            // bc finally might be an empty block...
+            return tryBlock;
+        }
+
+
+        Node handlerBlock  = new Node(Token.LOCAL_BLOCK);
+        Node.Jump pn = new Node.Jump(Token.TRY, tryBlock, lineno);
+        pn.putProp(Node.LOCAL_BLOCK_PROP, handlerBlock);
+
+        if (hasCatch) {
+            // jump around catch code
+            Node endCatch = Node.newTarget();
+            pn.addChildToBack(makeJump(Token.GOTO, endCatch));
+
+            // make a TARGET for the catch that the tcf node knows about
+            Node catchTarget = Node.newTarget();
+            pn.target = catchTarget;
+            // mark it
+            pn.addChildToBack(catchTarget);
+
+            //
+            //  Given
+            //
+            //   try {
+            //       tryBlock;
+            //   } catch (e if condition1) {
+            //       something1;
+            //   ...
+            //
+            //   } catch (e if conditionN) {
+            //       somethingN;
+            //   } catch (e) {
+            //       somethingDefault;
+            //   }
+            //
+            //  rewrite as
+            //
+            //   try {
+            //       tryBlock;
+            //       goto after_catch:
+            //   } catch (x) {
+            //       with (newCatchScope(e, x)) {
+            //           if (condition1) {
+            //               something1;
+            //               goto after_catch;
+            //           }
+            //       }
+            //   ...
+            //       with (newCatchScope(e, x)) {
+            //           if (conditionN) {
+            //               somethingN;
+            //               goto after_catch;
+            //           }
+            //       }
+            //       with (newCatchScope(e, x)) {
+            //           somethingDefault;
+            //           goto after_catch;
+            //       }
+            //   }
+            // after_catch:
+            //
+            // If there is no default catch, then the last with block
+            // arround  "somethingDefault;" is replaced by "rethrow;"
+
+            // It is assumed that catch handler generation will store
+            // exeception object in handlerBlock register
+
+            // Block with local for exception scope objects
+            Node catchScopeBlock = new Node(Token.LOCAL_BLOCK);
+
+            // expects catchblocks children to be (cond block) pairs.
+            Node cb = catchBlocks.getFirstChild();
+            boolean hasDefault = false;
+            int scopeIndex = 0;
+            while (cb != null) {
+                int catchLineNo = cb.getLineno();
+
+                Node name = cb.getFirstChild();
+                Node cond = name.getNext();
+                Node catchStatement = cond.getNext();
+                cb.removeChild(name);
+                cb.removeChild(cond);
+                cb.removeChild(catchStatement);
+
+                // Add goto to the catch statement to jump out of catch
+                // but prefix it with LEAVEWITH since try..catch produces
+                // "with"code in order to limit the scope of the exception
+                // object.
+                catchStatement.addChildToBack(new Node(Token.LEAVEWITH));
+                catchStatement.addChildToBack(makeJump(Token.GOTO, endCatch));
+
+                // Create condition "if" when present
+                Node condStmt;
+                if (cond.getType() == Token.EMPTY) {
+                    condStmt = catchStatement;
+                    hasDefault = true;
+                } else {
+                    condStmt = createIf(cond, catchStatement, null,
+                                        catchLineNo);
+                }
+
+                // Generate code to create the scope object and store
+                // it in catchScopeBlock register
+                Node catchScope = new Node(Token.CATCH_SCOPE, name,
+                                           createUseLocal(handlerBlock));
+                catchScope.putProp(Node.LOCAL_BLOCK_PROP, catchScopeBlock);
+                catchScope.putIntProp(Node.CATCH_SCOPE_PROP, scopeIndex);
+                catchScopeBlock.addChildToBack(catchScope);
+
+                // Add with statement based on catch scope object
+                catchScopeBlock.addChildToBack(
+                    createWith(createUseLocal(catchScopeBlock), condStmt,
+                               catchLineNo));
+
+                // move to next cb
+                cb = cb.getNext();
+                ++scopeIndex;
+            }
+            pn.addChildToBack(catchScopeBlock);
+            if (!hasDefault) {
+                // Generate code to rethrow if no catch clause was executed
+                Node rethrow = new Node(Token.RETHROW);
+                rethrow.putProp(Node.LOCAL_BLOCK_PROP, handlerBlock);
+                pn.addChildToBack(rethrow);
+            }
+
+            pn.addChildToBack(endCatch);
+        }
+
+        if (hasFinally) {
+            Node finallyTarget = Node.newTarget();
+            pn.setFinally(finallyTarget);
+
+            // add jsr finally to the try block
+            pn.addChildToBack(makeJump(Token.JSR, finallyTarget));
+
+            // jump around finally code
+            Node finallyEnd = Node.newTarget();
+            pn.addChildToBack(makeJump(Token.GOTO, finallyEnd));
+
+            pn.addChildToBack(finallyTarget);
+            Node fBlock = new Node(Token.FINALLY, finallyBlock);
+            fBlock.putProp(Node.LOCAL_BLOCK_PROP, handlerBlock);
+            pn.addChildToBack(fBlock);
+
+            pn.addChildToBack(finallyEnd);
+        }
+        handlerBlock.addChildToBack(pn);
+        return handlerBlock;
+    }
+
+    /**
+     * Throw, Return, Label, Break and Continue are defined in ASTFactory.
+     */
+
+    /**
+     * With
+     */
+    Node createWith(Node obj, Node body, int lineno)
+    {
+        setRequiresActivation();
+        Node result = new Node(Token.BLOCK, lineno);
+        result.addChildToBack(new Node(Token.ENTERWITH, obj));
+        Node bodyNode = new Node(Token.WITH, body, lineno);
+        result.addChildrenToBack(bodyNode);
+        result.addChildToBack(new Node(Token.LEAVEWITH));
+        return result;
+    }
+
+    /**
+     * DOTQUERY
+     */
+    public Node createDotQuery (Node obj, Node body, int lineno)
+    {
+        setRequiresActivation();
+        Node result = new Node(Token.DOTQUERY, obj, body, lineno);
+        return result;
+    }
+
+    Node createArrayLiteral(ObjArray elems, int skipCount, int destructuringLen)
+    {
+        int length = elems.size();
+        int[] skipIndexes = null;
+        if (skipCount != 0) {
+            skipIndexes = new int[skipCount];
+        }
+        Node array = new Node(Token.ARRAYLIT);
+        for (int i = 0, j = 0; i != length; ++i) {
+            Node elem = (Node)elems.get(i);
+            if (elem != null) {
+                array.addChildToBack(elem);
+            } else {
+                skipIndexes[j] = i;
+                ++j;
+            }
+        }
+        if (skipCount != 0) {
+            array.putProp(Node.SKIP_INDEXES_PROP, skipIndexes);
+        }
+        array.putIntProp(Node.DESTRUCTURING_ARRAY_LENGTH, destructuringLen);
+        return array;
+    }
+
+    /**
+     * Object Literals
+     * <BR> createObjectLiteral rewrites its argument as object
+     * creation plus object property entries, so later compiler
+     * stages don't need to know about object literals.
+     */
+    Node createObjectLiteral(ObjArray elems)
+    {
+        int size = elems.size() / 2;
+        Node object = new Node(Token.OBJECTLIT);
+        Object[] properties;
+        if (size == 0) {
+            properties = ScriptRuntime.emptyArgs;
+        } else {
+            properties = new Object[size];
+            for (int i = 0; i != size; ++i) {
+                properties[i] = elems.get(2 * i);
+                Node value = (Node)elems.get(2 * i + 1);
+                object.addChildToBack(value);
+            }
+        }
+        object.putProp(Node.OBJECT_IDS_PROP, properties);
+        return object;
+    }
+
+    /**
+     * Regular expressions
+     */
+    Node createRegExp(int regexpIndex)
+    {
+        Node n = new Node(Token.REGEXP);
+        n.putIntProp(Node.REGEXP_PROP, regexpIndex);
+        return n;
+    }
+
+    /**
+     * If statement
+     */
+    Node createIf(Node cond, Node ifTrue, Node ifFalse, int lineno)
+    {
+        int condStatus = isAlwaysDefinedBoolean(cond);
+        if (condStatus == ALWAYS_TRUE_BOOLEAN) {
+            return ifTrue;
+        } else if (condStatus == ALWAYS_FALSE_BOOLEAN) {
+            if (ifFalse != null) {
+                return ifFalse;
+            }
+            // Replace if (false) xxx by empty block
+            return new Node(Token.BLOCK, lineno);
+        }
+
+        Node result = new Node(Token.BLOCK, lineno);
+        Node ifNotTarget = Node.newTarget();
+        Node.Jump IFNE = new Node.Jump(Token.IFNE, cond);
+        IFNE.target = ifNotTarget;
+
+        result.addChildToBack(IFNE);
+        result.addChildrenToBack(ifTrue);
+
+        if (ifFalse != null) {
+            Node endTarget = Node.newTarget();
+            result.addChildToBack(makeJump(Token.GOTO, endTarget));
+            result.addChildToBack(ifNotTarget);
+            result.addChildrenToBack(ifFalse);
+            result.addChildToBack(endTarget);
+        } else {
+            result.addChildToBack(ifNotTarget);
+        }
+
+        return result;
+    }
+
+    Node createCondExpr(Node cond, Node ifTrue, Node ifFalse)
+    {
+        int condStatus = isAlwaysDefinedBoolean(cond);
+        if (condStatus == ALWAYS_TRUE_BOOLEAN) {
+            return ifTrue;
+        } else if (condStatus == ALWAYS_FALSE_BOOLEAN) {
+            return ifFalse;
+        }
+        return new Node(Token.HOOK, cond, ifTrue, ifFalse);
+    }
+
+    /**
+     * Unary
+     */
+    Node createUnary(int nodeType, Node child)
+    {
+        int childType = child.getType();
+        switch (nodeType) {
+          case Token.DELPROP: {
+            Node n;
+            if (childType == Token.NAME) {
+                // Transform Delete(Name "a")
+                //  to Delete(Bind("a"), String("a"))
+                child.setType(Token.BINDNAME);
+                Node left = child;
+                Node right = Node.newString(child.getString());
+                n = new Node(nodeType, left, right);
+            } else if (childType == Token.GETPROP ||
+                       childType == Token.GETELEM)
+            {
+                Node left = child.getFirstChild();
+                Node right = child.getLastChild();
+                child.removeChild(left);
+                child.removeChild(right);
+                n = new Node(nodeType, left, right);
+            } else if (childType == Token.GET_REF) {
+                Node ref = child.getFirstChild();
+                child.removeChild(ref);
+                n = new Node(Token.DEL_REF, ref);
+            } else {
+                n = new Node(Token.TRUE);
+            }
+            return n;
+          }
+          case Token.TYPEOF:
+            if (childType == Token.NAME) {
+                child.setType(Token.TYPEOFNAME);
+                return child;
+            }
+            break;
+          case Token.BITNOT:
+            if (childType == Token.NUMBER) {
+                int value = ScriptRuntime.toInt32(child.getDouble());
+                child.setDouble(~value);
+                return child;
+            }
+            break;
+          case Token.NEG:
+            if (childType == Token.NUMBER) {
+                child.setDouble(-child.getDouble());
+                return child;
+            }
+            break;
+          case Token.NOT: {
+            int status = isAlwaysDefinedBoolean(child);
+            if (status != 0) {
+                int type;
+                if (status == ALWAYS_TRUE_BOOLEAN) {
+                    type = Token.FALSE;
+                } else {
+                    type = Token.TRUE;
+                }
+                if (childType == Token.TRUE || childType == Token.FALSE) {
+                    child.setType(type);
+                    return child;
+                }
+                return new Node(type);
+            }
+            break;
+          }
+        }
+        return new Node(nodeType, child);
+    }
+
+    Node createYield(Node child, int lineno)
+    {
+      if (!parser.insideFunction()) {
+        parser.reportError("msg.bad.yield");
+      }
+      setRequiresActivation();
+      setIsGenerator();
+      if (child != null)
+        return new Node(Token.YIELD, child, lineno);
+      else
+        return new Node(Token.YIELD, lineno);
+    }
+
+    Node createCallOrNew(int nodeType, Node child)
+    {
+        int type = Node.NON_SPECIALCALL;
+        if (child.getType() == Token.NAME) {
+            String name = child.getString();
+            if (name.equals("eval")) {
+                type = Node.SPECIALCALL_EVAL;
+            } else if (name.equals("With")) {
+                type = Node.SPECIALCALL_WITH;
+            }
+        } else if (child.getType() == Token.GETPROP) {
+            String name = child.getLastChild().getString();
+            if (name.equals("eval")) {
+                type = Node.SPECIALCALL_EVAL;
+            }
+        }
+        Node node = new Node(nodeType, child);
+        if (type != Node.NON_SPECIALCALL) {
+            // Calls to these functions require activation objects.
+            setRequiresActivation();
+            node.putIntProp(Node.SPECIALCALL_PROP, type);
+        }
+        return node;
+    }
+
+    Node createIncDec(int nodeType, boolean post, Node child)
+    {
+        child = makeReference(child);
+        if (child == null) {
+            String msg;
+            if (nodeType == Token.DEC) {
+                msg = "msg.bad.decr";
+            } else {
+                msg = "msg.bad.incr";
+            }
+            parser.reportError(msg);
+            return null;
+        }
+
+        int childType = child.getType();
+
+        switch (childType) {
+          case Token.NAME:
+          case Token.GETPROP:
+          case Token.GETELEM:
+          case Token.GET_REF: {
+            Node n = new Node(nodeType, child);
+            int incrDecrMask = 0;
+            if (nodeType == Token.DEC) {
+                incrDecrMask |= Node.DECR_FLAG;
+            }
+            if (post) {
+                incrDecrMask |= Node.POST_FLAG;
+            }
+            n.putIntProp(Node.INCRDECR_PROP, incrDecrMask);
+            return n;
+          }
+        }
+        throw Kit.codeBug();
+    }
+
+    Node createPropertyGet(Node target, String namespace, String name,
+                           int memberTypeFlags)
+    {
+        if (namespace == null && memberTypeFlags == 0) {
+            if (target == null) {
+                return createName(name);
+            }
+            checkActivationName(name, Token.GETPROP);
+            if (ScriptRuntime.isSpecialProperty(name)) {
+                Node ref = new Node(Token.REF_SPECIAL, target);
+                ref.putProp(Node.NAME_PROP, name);
+                return new Node(Token.GET_REF, ref);
+            }
+            return new Node(Token.GETPROP, target, createString(name));
+        }
+        Node elem = createString(name);
+        memberTypeFlags |= Node.PROPERTY_FLAG;
+        return createMemberRefGet(target, namespace, elem, memberTypeFlags);
+    }
+
+    Node createElementGet(Node target, String namespace, Node elem,
+                          int memberTypeFlags)
+    {
+        // OPT: could optimize to createPropertyGet
+        // iff elem is string that can not be number
+        if (namespace == null && memberTypeFlags == 0) {
+            // stand-alone [aaa] as primary expression is array literal
+            // declaration and should not come here!
+            if (target == null) throw Kit.codeBug();
+            return new Node(Token.GETELEM, target, elem);
+        }
+        return createMemberRefGet(target, namespace, elem, memberTypeFlags);
+    }
+
+    private Node createMemberRefGet(Node target, String namespace, Node elem,
+                                    int memberTypeFlags)
+    {
+        Node nsNode = null;
+        if (namespace != null) {
+            // See 11.1.2 in ECMA 357
+            if (namespace.equals("*")) {
+                nsNode = new Node(Token.NULL);
+            } else {
+                nsNode = createName(namespace);
+            }
+        }
+        Node ref;
+        if (target == null) {
+            if (namespace == null) {
+                ref = new Node(Token.REF_NAME, elem);
+            } else {
+                ref = new Node(Token.REF_NS_NAME, nsNode, elem);
+            }
+        } else {
+            if (namespace == null) {
+                ref = new Node(Token.REF_MEMBER, target, elem);
+            } else {
+                ref = new Node(Token.REF_NS_MEMBER, target, nsNode, elem);
+            }
+        }
+        if (memberTypeFlags != 0) {
+            ref.putIntProp(Node.MEMBER_TYPE_PROP, memberTypeFlags);
+        }
+        return new Node(Token.GET_REF, ref);
+    }
+
+    /**
+     * Binary
+     */
+    Node createBinary(int nodeType, Node left, Node right)
+    {
+        switch (nodeType) {
+
+          case Token.ADD:
+            // numerical addition and string concatenation
+            if (left.type == Token.STRING) {
+                String s2;
+                if (right.type == Token.STRING) {
+                    s2 = right.getString();
+                } else if (right.type == Token.NUMBER) {
+                    s2 = ScriptRuntime.numberToString(right.getDouble(), 10);
+                } else {
+                    break;
+                }
+                String s1 = left.getString();
+                left.setString(s1.concat(s2));
+                return left;
+            } else if (left.type == Token.NUMBER) {
+                if (right.type == Token.NUMBER) {
+                    left.setDouble(left.getDouble() + right.getDouble());
+                    return left;
+                } else if (right.type == Token.STRING) {
+                    String s1, s2;
+                    s1 = ScriptRuntime.numberToString(left.getDouble(), 10);
+                    s2 = right.getString();
+                    right.setString(s1.concat(s2));
+                    return right;
+                }
+            }
+            // can't do anything if we don't know  both types - since
+            // 0 + object is supposed to call toString on the object and do
+            // string concantenation rather than addition
+            break;
+
+          case Token.SUB:
+            // numerical subtraction
+            if (left.type == Token.NUMBER) {
+                double ld = left.getDouble();
+                if (right.type == Token.NUMBER) {
+                    //both numbers
+                    left.setDouble(ld - right.getDouble());
+                    return left;
+                } else if (ld == 0.0) {
+                    // first 0: 0-x -> -x
+                    return new Node(Token.NEG, right);
+                }
+            } else if (right.type == Token.NUMBER) {
+                if (right.getDouble() == 0.0) {
+                    //second 0: x - 0 -> +x
+                    // can not make simply x because x - 0 must be number
+                    return new Node(Token.POS, left);
+                }
+            }
+            break;
+
+          case Token.MUL:
+            // numerical multiplication
+            if (left.type == Token.NUMBER) {
+                double ld = left.getDouble();
+                if (right.type == Token.NUMBER) {
+                    //both numbers
+                    left.setDouble(ld * right.getDouble());
+                    return left;
+                } else if (ld == 1.0) {
+                    // first 1: 1 *  x -> +x
+                    return new Node(Token.POS, right);
+                }
+            } else if (right.type == Token.NUMBER) {
+                if (right.getDouble() == 1.0) {
+                    //second 1: x * 1 -> +x
+                    // can not make simply x because x - 0 must be number
+                    return new Node(Token.POS, left);
+                }
+            }
+            // can't do x*0: Infinity * 0 gives NaN, not 0
+            break;
+
+          case Token.DIV:
+            // number division
+            if (right.type == Token.NUMBER) {
+                double rd = right.getDouble();
+                if (left.type == Token.NUMBER) {
+                    // both constants -- just divide, trust Java to handle x/0
+                    left.setDouble(left.getDouble() / rd);
+                    return left;
+               } else if (rd == 1.0) {
+                    // second 1: x/1 -> +x
+                    // not simply x to force number convertion
+                    return new Node(Token.POS, left);
+                }
+            }
+            break;
+
+          case Token.AND: {
+            // Since x && y gives x, not false, when Boolean(x) is false,
+            // and y, not Boolean(y), when Boolean(x) is true, x && y
+            // can only be simplified if x is defined. See bug 309957.
+
+            int leftStatus = isAlwaysDefinedBoolean(left);
+            if (leftStatus == ALWAYS_FALSE_BOOLEAN) {
+                // if the first one is false, just return it
+                return left;
+            } else if (leftStatus == ALWAYS_TRUE_BOOLEAN) {
+                // if first is true, set to second
+                return right;
+            }
+            break;
+          }
+
+          case Token.OR: {
+            // Since x || y gives x, not true, when Boolean(x) is true,
+            // and y, not Boolean(y), when Boolean(x) is false, x || y
+            // can only be simplified if x is defined. See bug 309957.
+
+            int leftStatus = isAlwaysDefinedBoolean(left);
+            if (leftStatus == ALWAYS_TRUE_BOOLEAN) {
+                // if the first one is true, just return it
+                return left;
+            } else if (leftStatus == ALWAYS_FALSE_BOOLEAN) {
+                // if first is false, set to second
+                return right;
+            }
+            break;
+          }
+        }
+
+        return new Node(nodeType, left, right);
+    }
+
+    private Node simpleAssignment(Node left, Node right)
+    {
+        int nodeType = left.getType();
+        switch (nodeType) {
+          case Token.NAME:
+            left.setType(Token.BINDNAME);
+            return new Node(Token.SETNAME, left, right);
+
+          case Token.GETPROP:
+          case Token.GETELEM: {
+            Node obj = left.getFirstChild();
+            Node id = left.getLastChild();
+            int type;
+            if (nodeType == Token.GETPROP) {
+                type = Token.SETPROP;
+            } else {
+                type = Token.SETELEM;
+            }
+            return new Node(type, obj, id, right);
+          }
+          case Token.GET_REF: {
+            Node ref = left.getFirstChild();
+            checkMutableReference(ref);
+            return new Node(Token.SET_REF, ref, right);
+          }
+        }
+
+        throw Kit.codeBug();
+    }
+
+    private void checkMutableReference(Node n)
+    {
+        int memberTypeFlags = n.getIntProp(Node.MEMBER_TYPE_PROP, 0);
+        if ((memberTypeFlags & Node.DESCENDANTS_FLAG) != 0) {
+            parser.reportError("msg.bad.assign.left");
+        }
+    }
+
+    Node createAssignment(int assignType, Node left, Node right)
+    {
+        Node ref = makeReference(left);
+        if (ref == null) {
+            if (left.getType() == Token.ARRAYLIT || 
+                left.getType() == Token.OBJECTLIT)
+            {
+                if (assignType != Token.ASSIGN) {
+                    parser.reportError("msg.bad.destruct.op");
+                    return right;
+                }
+                return createDestructuringAssignment(-1, left, right);
+            }
+            parser.reportError("msg.bad.assign.left");
+            return right;
+        }
+        left = ref;
+
+        int assignOp;
+        switch (assignType) {
+          case Token.ASSIGN:
+            return simpleAssignment(left, right);
+          case Token.ASSIGN_BITOR:  assignOp = Token.BITOR;  break;
+          case Token.ASSIGN_BITXOR: assignOp = Token.BITXOR; break;
+          case Token.ASSIGN_BITAND: assignOp = Token.BITAND; break;
+          case Token.ASSIGN_LSH:    assignOp = Token.LSH;    break;
+          case Token.ASSIGN_RSH:    assignOp = Token.RSH;    break;
+          case Token.ASSIGN_URSH:   assignOp = Token.URSH;   break;
+          case Token.ASSIGN_ADD:    assignOp = Token.ADD;    break;
+          case Token.ASSIGN_SUB:    assignOp = Token.SUB;    break;
+          case Token.ASSIGN_MUL:    assignOp = Token.MUL;    break;
+          case Token.ASSIGN_DIV:    assignOp = Token.DIV;    break;
+          case Token.ASSIGN_MOD:    assignOp = Token.MOD;    break;
+          default: throw Kit.codeBug();
+        }
+
+        int nodeType = left.getType();
+        switch (nodeType) {
+          case Token.NAME: {
+            Node op = new Node(assignOp, left, right);
+            Node lvalueLeft = Node.newString(Token.BINDNAME, left.getString());
+            return new Node(Token.SETNAME, lvalueLeft, op);
+          }
+          case Token.GETPROP:
+          case Token.GETELEM: {
+            Node obj = left.getFirstChild();
+            Node id = left.getLastChild();
+
+            int type = nodeType == Token.GETPROP
+                       ? Token.SETPROP_OP
+                       : Token.SETELEM_OP;
+
+            Node opLeft = new Node(Token.USE_STACK);
+            Node op = new Node(assignOp, opLeft, right);
+            return new Node(type, obj, id, op);
+          }
+          case Token.GET_REF: {
+            ref = left.getFirstChild();
+            checkMutableReference(ref);
+            Node opLeft = new Node(Token.USE_STACK);
+            Node op = new Node(assignOp, opLeft, right);
+            return new Node(Token.SET_REF_OP, ref, op);
+          }
+        }
+
+        throw Kit.codeBug();
+    }
+    
+    /**
+     * Given a destructuring assignment with a left hand side parsed
+     * as an array or object literal and a right hand side expression,
+     * rewrite as a series of assignments to the variables defined in
+     * left from property accesses to the expression on the right.
+     * @param type declaration type: Token.VAR or Token.LET or -1
+     * @param left array or object literal containing NAME nodes for
+     *        variables to assign
+     * @param right expression to assign from
+     * @return expression that performs a series of assignments to
+     *         the variables defined in left
+     */
+    Node createDestructuringAssignment(int type, Node left, Node right)
+    {
+        String tempName = parser.currentScriptOrFn.getNextTempName();
+        Node result = destructuringAssignmentHelper(type, left, right,
+            tempName);
+        Node comma = result.getLastChild();
+        comma.addChildToBack(createName(tempName));
+        return result;
+    }
+
+    private Node destructuringAssignmentHelper(int variableType, Node left, 
+                                               Node right, String tempName)
+    {
+        Node result = createScopeNode(Token.LETEXPR,
+            parser.getCurrentLineNumber());
+        result.addChildToFront(new Node(Token.LET,
+            createName(Token.NAME, tempName, right)));
+        try {
+            parser.pushScope(result);
+            parser.defineSymbol(Token.LET, tempName);
+        } finally {
+            parser.popScope();
+        }
+        Node comma = new Node(Token.COMMA);
+        result.addChildToBack(comma);
+        final int setOp = variableType == Token.CONST ? Token.SETCONST
+        		                                      : Token.SETNAME;
+        List<String> destructuringNames = new ArrayList<String>();
+        boolean empty = true;
+        int type = left.getType();
+        if (type == Token.ARRAYLIT) {
+            int index = 0;
+            int[] skipIndices = (int[])left.getProp(Node.SKIP_INDEXES_PROP);
+            int skip = 0;
+            Node n = left.getFirstChild();
+            for (;;) {
+                if (skipIndices != null) {
+                    while (skip < skipIndices.length && 
+                           skipIndices[skip] == index) {
+                        skip++;
+                        index++;
+                    }
+                }
+                if (n == null)
+                    break;
+                Node rightElem = new Node(Token.GETELEM,
+                    createName(tempName), 
+                    createNumber(index));
+                if (n.getType() == Token.NAME) {
+                    String name = n.getString();
+                    comma.addChildToBack(new Node(setOp, 
+                        createName(Token.BINDNAME, name, null),
+                        rightElem));
+                    if (variableType != -1) {
+                        parser.defineSymbol(variableType, name);
+                        destructuringNames.add(name);
+                    }
+                } else {
+                    comma.addChildToBack(
+                        destructuringAssignmentHelper(variableType, n,
+                            rightElem,
+                            parser.currentScriptOrFn.getNextTempName()));
+                }
+                index++;
+                empty = false;
+                n = n.getNext();
+            }
+        } else if (type == Token.OBJECTLIT) {
+            int index = 0;
+            Object[] propertyIds = (Object[])
+                left.getProp(Node.OBJECT_IDS_PROP);
+            for (Node n = left.getFirstChild(); n != null; n = n.getNext())
+            {
+                Object id = propertyIds[index];
+                Node rightElem = id instanceof String 
+                    ? new Node(Token.GETPROP,
+                        createName(tempName), 
+                        createString((String)id))
+                    : new Node(Token.GETELEM,
+                        createName(tempName), 
+                        createNumber(((Number)id).intValue()));
+                if (n.getType() == Token.NAME) {
+                    String name = n.getString();
+                    comma.addChildToBack(new Node(setOp, 
+                        createName(Token.BINDNAME, name, null),
+                        rightElem));
+                    if (variableType != -1) {
+                        parser.defineSymbol(variableType, name);
+                        destructuringNames.add(name);
+                    }
+                } else {
+                    comma.addChildToBack(
+                        destructuringAssignmentHelper(variableType, n,
+                            rightElem,
+                            parser.currentScriptOrFn.getNextTempName()));
+                }
+                index++;
+                empty = false;
+            }
+        } else if (type == Token.GETPROP || type == Token.GETELEM) {
+            comma.addChildToBack(simpleAssignment(left, createName(tempName)));
+        } else {
+            parser.reportError("msg.bad.assign.left");
+        }
+        if (empty) {
+            // Don't want a COMMA node with no children. Just add a zero.
+            comma.addChildToBack(createNumber(0));
+        }
+        result.putProp(Node.DESTRUCTURING_NAMES, destructuringNames);
+        return result;
+    }
+
+    Node createUseLocal(Node localBlock)
+    {
+        if (Token.LOCAL_BLOCK != localBlock.getType()) throw Kit.codeBug();
+        Node result = new Node(Token.LOCAL_LOAD);
+        result.putProp(Node.LOCAL_BLOCK_PROP, localBlock);
+        return result;
+    }
+
+    private Node.Jump makeJump(int type, Node target)
+    {
+        Node.Jump n = new Node.Jump(type);
+        n.target = target;
+        return n;
+    }
+
+    private Node makeReference(Node node)
+    {
+        int type = node.getType();
+        switch (type) {
+          case Token.NAME:
+          case Token.GETPROP:
+          case Token.GETELEM:
+          case Token.GET_REF:
+            return node;
+          case Token.CALL:
+            node.setType(Token.REF_CALL);
+            return new Node(Token.GET_REF, node);
+        }
+        // Signal caller to report error
+        return null;
+    }
+
+    // Check if Node always mean true or false in boolean context
+    private static int isAlwaysDefinedBoolean(Node node)
+    {
+        switch (node.getType()) {
+          case Token.FALSE:
+          case Token.NULL:
+            return ALWAYS_FALSE_BOOLEAN;
+          case Token.TRUE:
+            return ALWAYS_TRUE_BOOLEAN;
+          case Token.NUMBER: {
+            double num = node.getDouble();
+            if (num == num && num != 0.0) {
+                return ALWAYS_TRUE_BOOLEAN;
+            } else {
+                return ALWAYS_FALSE_BOOLEAN;
+            }
+          }
+        }
+        return 0;
+    }
+    
+    private void checkActivationName(String name, int token)
+    {
+        if (parser.insideFunction()) {
+            boolean activation = false;
+            if ("arguments".equals(name)
+                || (parser.compilerEnv.activationNames != null
+                    && parser.compilerEnv.activationNames.containsKey(name)))
+            {
+                activation = true;
+            } else if ("length".equals(name)) {
+                if (token == Token.GETPROP
+                    && parser.compilerEnv.getLanguageVersion()
+                       == Context.VERSION_1_2)
+                {
+                    // Use of "length" in 1.2 requires an activation object.
+                    activation = true;
+                }
+            }
+            if (activation) {
+                setRequiresActivation();
+            }
+        }
+    }
+
+    private void setRequiresActivation()
+    {
+        if (parser.insideFunction()) {
+            ((FunctionNode)parser.currentScriptOrFn).itsNeedsActivation = true;
+        }
+    }
+
+    private void setIsGenerator()
+    {
+        if (parser.insideFunction()) {
+            ((FunctionNode)parser.currentScriptOrFn).itsIsGenerator = true;
+        }
+    }
+
+    private Parser parser;
+
+    private static final int LOOP_DO_WHILE = 0;
+    private static final int LOOP_WHILE    = 1;
+    private static final int LOOP_FOR      = 2;
+
+    private static final int ALWAYS_TRUE_BOOLEAN = 1;
+    private static final int ALWAYS_FALSE_BOOLEAN = -1;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdFunctionCall.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdFunctionCall.java
new file mode 100644
index 0000000..713fabf
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdFunctionCall.java
@@ -0,0 +1,55 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * Master for id-based functions that knows their properties and how to
+ * execute them.
+ */
+public interface IdFunctionCall
+{
+    /**
+     * 'thisObj' will be null if invoked as constructor, in which case
+     * instance of Scriptable should be returned
+     */
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args);
+
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdFunctionObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdFunctionObject.java
new file mode 100644
index 0000000..c578dfa
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdFunctionObject.java
@@ -0,0 +1,189 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+public class IdFunctionObject extends BaseFunction
+{
+
+    static final long serialVersionUID = -5332312783643935019L;
+
+    public IdFunctionObject(IdFunctionCall idcall, Object tag, int id, int arity)
+    {
+        if (arity < 0)
+            throw new IllegalArgumentException();
+
+        this.idcall = idcall;
+        this.tag = tag;
+        this.methodId = id;
+        this.arity = arity;
+        if (arity < 0) throw new IllegalArgumentException();
+    }
+
+    public IdFunctionObject(IdFunctionCall idcall, Object tag, int id,
+                            String name, int arity, Scriptable scope)
+    {
+        super(scope, null);
+
+        if (arity < 0)
+            throw new IllegalArgumentException();
+        if (name == null)
+            throw new IllegalArgumentException();
+
+        this.idcall = idcall;
+        this.tag = tag;
+        this.methodId = id;
+        this.arity = arity;
+        this.functionName = name;
+    }
+
+    public void initFunction(String name, Scriptable scope)
+    {
+        if (name == null) throw new IllegalArgumentException();
+        if (scope == null) throw new IllegalArgumentException();
+        this.functionName = name;
+        setParentScope(scope);
+    }
+
+    public final boolean hasTag(Object tag)
+    {
+        return this.tag == tag;
+    }
+
+    public final int methodId()
+    {
+        return methodId;
+    }
+
+    public final void markAsConstructor(Scriptable prototypeProperty)
+    {
+        useCallAsConstructor = true;
+        setImmunePrototypeProperty(prototypeProperty);
+    }
+
+    public final void addAsProperty(Scriptable target)
+    {
+        ScriptableObject.defineProperty(target, functionName, this,
+                                        ScriptableObject.DONTENUM);
+    }
+
+    public void exportAsScopeProperty()
+    {
+        addAsProperty(getParentScope());
+    }
+
+    public Scriptable getPrototype()
+    {
+        // Lazy initialization of prototype: for native functions this
+        // may not be called at all
+        Scriptable proto = super.getPrototype();
+        if (proto == null) {
+            proto = getFunctionPrototype(getParentScope());
+            setPrototype(proto);
+        }
+        return proto;
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        return idcall.execIdCall(this, cx, scope, thisObj, args);
+    }
+
+    public Scriptable createObject(Context cx, Scriptable scope)
+    {
+        if (useCallAsConstructor) {
+            return null;
+        }
+        // Throw error if not explicitly coded to be used as constructor,
+        // to satisfy ECMAScript standard (see bugzilla 202019).
+        // To follow current (2003-05-01) SpiderMonkey behavior, change it to:
+        // return super.createObject(cx, scope);
+        throw ScriptRuntime.typeError1("msg.not.ctor", functionName);
+    }
+
+    String decompile(int indent, int flags)
+    {
+        StringBuffer sb = new StringBuffer();
+        boolean justbody = (0 != (flags & Decompiler.ONLY_BODY_FLAG));
+        if (!justbody) {
+            sb.append("function ");
+            sb.append(getFunctionName());
+            sb.append("() { ");
+        }
+        sb.append("[native code for ");
+        if (idcall instanceof Scriptable) {
+            Scriptable sobj = (Scriptable)idcall;
+            sb.append(sobj.getClassName());
+            sb.append('.');
+        }
+        sb.append(getFunctionName());
+        sb.append(", arity=");
+        sb.append(getArity());
+        sb.append(justbody ? "]\n" : "] }\n");
+        return sb.toString();
+    }
+
+    public int getArity()
+    {
+        return arity;
+    }
+
+    public int getLength() { return getArity(); }
+
+    public String getFunctionName()
+    {
+        return (functionName == null) ? "" : functionName;
+    }
+
+    public final RuntimeException unknown()
+    {
+        // It is program error to call id-like methods for unknown function
+        return new IllegalArgumentException(
+            "BAD FUNCTION ID="+methodId+" MASTER="+idcall);
+    }
+
+    private final IdFunctionCall idcall;
+    private final Object tag;
+    private final int methodId;
+    private int arity;
+    private boolean useCallAsConstructor;
+    private String functionName;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdScriptableObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdScriptableObject.java
new file mode 100644
index 0000000..2b3ecf3
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/IdScriptableObject.java
@@ -0,0 +1,734 @@
+/* -*- Mode: java; tab-width: 4; indent-tabs-mode: 1; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.*;
+
+/**
+Base class for native object implementation that uses IdFunctionObject to export its methods to script via <class-name>.prototype object.
+
+Any descendant should implement at least the following methods:
+    findInstanceIdInfo
+    getInstanceIdName
+    execIdCall
+    methodArity
+
+To define non-function properties, the descendant should override
+    getInstanceIdValue
+    setInstanceIdValue
+to get/set property value and provide its default attributes.
+
+
+To customize initializition of constructor and protype objects, descendant
+may override scopeInit or fillConstructorProperties methods.
+
+*/
+public abstract class IdScriptableObject extends ScriptableObject
+    implements IdFunctionCall
+{
+    private transient volatile PrototypeValues prototypeValues;
+
+    private static final class PrototypeValues implements Serializable
+    {
+        static final long serialVersionUID = 3038645279153854371L;
+
+        private static final int VALUE_SLOT = 0;
+        private static final int NAME_SLOT = 1;
+        private static final int SLOT_SPAN = 2;
+
+        private IdScriptableObject obj;
+        private int maxId;
+        private volatile Object[] valueArray;
+        private volatile short[] attributeArray;
+        private volatile int lastFoundId = 1;
+
+        // The following helps to avoid creation of valueArray during runtime
+        // initialization for common case of "constructor" property
+        int constructorId;
+        private IdFunctionObject constructor;
+        private short constructorAttrs;
+
+        PrototypeValues(IdScriptableObject obj, int maxId)
+        {
+            if (obj == null) throw new IllegalArgumentException();
+            if (maxId < 1) throw new IllegalArgumentException();
+            this.obj = obj;
+            this.maxId = maxId;
+        }
+
+        final int getMaxId()
+        {
+            return maxId;
+        }
+
+        final void initValue(int id, String name, Object value, int attributes)
+        {
+            if (!(1 <= id && id <= maxId))
+                throw new IllegalArgumentException();
+            if (name == null)
+                throw new IllegalArgumentException();
+            if (value == NOT_FOUND)
+                throw new IllegalArgumentException();
+            ScriptableObject.checkValidAttributes(attributes);
+            if (obj.findPrototypeId(name) != id)
+                throw new IllegalArgumentException(name);
+
+            if (id == constructorId) {
+                if (!(value instanceof IdFunctionObject)) {
+                    throw new IllegalArgumentException("consructor should be initialized with IdFunctionObject");
+                }
+                constructor = (IdFunctionObject)value;
+                constructorAttrs = (short)attributes;
+                return;
+            }
+
+            initSlot(id, name, value, attributes);
+        }
+
+        private void initSlot(int id, String name, Object value,
+                              int attributes)
+        {
+            Object[] array = valueArray;
+            if (array == null)
+                throw new IllegalStateException();
+
+            if (value == null) {
+                value = UniqueTag.NULL_VALUE;
+            }
+            int index = (id - 1) * SLOT_SPAN;
+            synchronized (this) {
+                Object value2 = array[index + VALUE_SLOT];
+                if (value2 == null) {
+                    array[index + VALUE_SLOT] = value;
+                    array[index + NAME_SLOT] = name;
+                    attributeArray[id - 1] = (short)attributes;
+                } else {
+                    if (!name.equals(array[index + NAME_SLOT]))
+                         throw new IllegalStateException();
+                }
+            }
+        }
+
+        final IdFunctionObject createPrecachedConstructor()
+        {
+            if (constructorId != 0) throw new IllegalStateException();
+            constructorId = obj.findPrototypeId("constructor");
+            if (constructorId == 0) {
+                throw new IllegalStateException(
+                    "No id for constructor property");
+            }
+            obj.initPrototypeId(constructorId);
+            if (constructor == null) {
+                throw new IllegalStateException(
+                    obj.getClass().getName()+".initPrototypeId() did not "
+                    +"initialize id="+constructorId);
+            }
+            constructor.initFunction(obj.getClassName(),
+                                     ScriptableObject.getTopLevelScope(obj));
+            constructor.markAsConstructor(obj);
+            return constructor;
+        }
+
+        final int findId(String name)
+        {
+            Object[] array = valueArray;
+            if (array == null) {
+                return obj.findPrototypeId(name);
+            }
+            int id = lastFoundId;
+            if (name == array[(id - 1) * SLOT_SPAN + NAME_SLOT]) {
+                return id;
+            }
+            id = obj.findPrototypeId(name);
+            if (id != 0) {
+                int nameSlot = (id - 1) * SLOT_SPAN + NAME_SLOT;
+                // Make cache to work!
+                array[nameSlot] = name;
+                lastFoundId = id;
+            }
+            return id;
+        }
+
+        final boolean has(int id)
+        {
+            Object[] array = valueArray;
+            if (array == null) {
+                // Not yet initialized, assume all exists
+                return true;
+            }
+            int valueSlot = (id  - 1) * SLOT_SPAN + VALUE_SLOT;
+            Object value = array[valueSlot];
+            if (value == null) {
+                // The particular entry has not been yet initialized
+                return true;
+            }
+            return value != NOT_FOUND;
+        }
+
+        final Object get(int id)
+        {
+            Object value = ensureId(id);
+            if (value == UniqueTag.NULL_VALUE) {
+                value = null;
+            }
+            return value;
+        }
+
+        final void set(int id, Scriptable start, Object value)
+        {
+            if (value == NOT_FOUND) throw new IllegalArgumentException();
+            ensureId(id);
+            int attr = attributeArray[id - 1];
+            if ((attr & READONLY) == 0) {
+                if (start == obj) {
+                    if (value == null) {
+                        value = UniqueTag.NULL_VALUE;
+                    }
+                    int valueSlot = (id  - 1) * SLOT_SPAN + VALUE_SLOT;
+                    synchronized (this) {
+                        valueArray[valueSlot] = value;
+                    }
+                }
+                else {
+                    int nameSlot = (id  - 1) * SLOT_SPAN + NAME_SLOT;
+                    String name = (String)valueArray[nameSlot];
+                    start.put(name, start, value);
+                }
+            }
+        }
+
+        final void delete(int id)
+        {
+            ensureId(id);
+            int attr = attributeArray[id - 1];
+            if ((attr & PERMANENT) == 0) {
+                int valueSlot = (id  - 1) * SLOT_SPAN + VALUE_SLOT;
+                synchronized (this) {
+                    valueArray[valueSlot] = NOT_FOUND;
+                    attributeArray[id - 1] = EMPTY;
+                }
+            }
+        }
+
+        final int getAttributes(int id)
+        {
+            ensureId(id);
+            return attributeArray[id - 1];
+        }
+
+        final void setAttributes(int id, int attributes)
+        {
+            ScriptableObject.checkValidAttributes(attributes);
+            ensureId(id);
+            synchronized (this) {
+                attributeArray[id - 1] = (short)attributes;
+            }
+        }
+
+        final Object[] getNames(boolean getAll, Object[] extraEntries)
+        {
+            Object[] names = null;
+            int count = 0;
+            for (int id = 1; id <= maxId; ++id) {
+                Object value = ensureId(id);
+                if (getAll || (attributeArray[id - 1] & DONTENUM) == 0) {
+                    if (value != NOT_FOUND) {
+                        int nameSlot = (id  - 1) * SLOT_SPAN + NAME_SLOT;
+                        String name = (String)valueArray[nameSlot];
+                        if (names == null) {
+                            names = new Object[maxId];
+                        }
+                        names[count++] = name;
+                    }
+                }
+            }
+            if (count == 0) {
+                return extraEntries;
+            } else if (extraEntries == null || extraEntries.length == 0) {
+                if (count != names.length) {
+                    Object[] tmp = new Object[count];
+                    System.arraycopy(names, 0, tmp, 0, count);
+                    names = tmp;
+                }
+                return names;
+            } else {
+                int extra = extraEntries.length;
+                Object[] tmp = new Object[extra + count];
+                System.arraycopy(extraEntries, 0, tmp, 0, extra);
+                System.arraycopy(names, 0, tmp, extra, count);
+                return tmp;
+            }
+        }
+
+        private Object ensureId(int id)
+        {
+            Object[] array = valueArray;
+            if (array == null) {
+                synchronized (this) {
+                    array = valueArray;
+                    if (array == null) {
+                        array = new Object[maxId * SLOT_SPAN];
+                        valueArray = array;
+                        attributeArray = new short[maxId];
+                    }
+                }
+            }
+            int valueSlot = (id  - 1) * SLOT_SPAN + VALUE_SLOT;
+            Object value = array[valueSlot];
+            if (value == null) {
+                if (id == constructorId) {
+                    initSlot(constructorId, "constructor",
+                             constructor, constructorAttrs);
+                    constructor = null; // no need to refer it any longer
+                } else {
+                    obj.initPrototypeId(id);
+                }
+                value = array[valueSlot];
+                if (value == null) {
+                    throw new IllegalStateException(
+                        obj.getClass().getName()+".initPrototypeId(int id) "
+                        +"did not initialize id="+id);
+                }
+            }
+            return value;
+        }
+    }
+
+    public IdScriptableObject()
+    {
+    }
+
+    public IdScriptableObject(Scriptable scope, Scriptable prototype)
+    {
+        super(scope, prototype);
+    }
+
+    protected final Object defaultGet(String name)
+    {
+        return super.get(name, this);
+    }
+
+    protected final void defaultPut(String name, Object value)
+    {
+        super.put(name, this, value);
+    }
+
+    public boolean has(String name, Scriptable start)
+    {
+        int info = findInstanceIdInfo(name);
+        if (info != 0) {
+            int attr = (info >>> 16);
+            if ((attr & PERMANENT) != 0) {
+                return true;
+            }
+            int id = (info & 0xFFFF);
+            return NOT_FOUND != getInstanceIdValue(id);
+        }
+        if (prototypeValues != null) {
+            int id = prototypeValues.findId(name);
+            if (id != 0) {
+                return prototypeValues.has(id);
+            }
+        }
+        return super.has(name, start);
+    }
+
+    public Object get(String name, Scriptable start)
+    {
+        int info = findInstanceIdInfo(name);
+        if (info != 0) {
+            int id = (info & 0xFFFF);
+            return getInstanceIdValue(id);
+        }
+        if (prototypeValues != null) {
+            int id = prototypeValues.findId(name);
+            if (id != 0) {
+                return prototypeValues.get(id);
+            }
+        }
+        return super.get(name, start);
+    }
+
+    public void put(String name, Scriptable start, Object value)
+    {
+        int info = findInstanceIdInfo(name);
+        if (info != 0) {
+            if (start == this && isSealed()) {
+                throw Context.reportRuntimeError1("msg.modify.sealed",
+                                                  name);
+            }
+            int attr = (info >>> 16);
+            if ((attr & READONLY) == 0) {
+                if (start == this) {
+                    int id = (info & 0xFFFF);
+                    setInstanceIdValue(id, value);
+                }
+                else {
+                    start.put(name, start, value);
+                }
+            }
+            return;
+        }
+        if (prototypeValues != null) {
+            int id = prototypeValues.findId(name);
+            if (id != 0) {
+                if (start == this && isSealed()) {
+                    throw Context.reportRuntimeError1("msg.modify.sealed",
+                                                      name);
+                }
+                prototypeValues.set(id, start, value);
+                return;
+            }
+        }
+        super.put(name, start, value);
+    }
+
+    public void delete(String name)
+    {
+        int info = findInstanceIdInfo(name);
+        if (info != 0) {
+            // Let the super class to throw exceptions for sealed objects
+            if (!isSealed()) {
+                int attr = (info >>> 16);
+                if ((attr & PERMANENT) == 0) {
+                    int id = (info & 0xFFFF);
+                    setInstanceIdValue(id, NOT_FOUND);
+                }
+                return;
+            }
+        }
+        if (prototypeValues != null) {
+            int id = prototypeValues.findId(name);
+            if (id != 0) {
+                if (!isSealed()) {
+                    prototypeValues.delete(id);
+                }
+                return;
+            }
+        }
+        super.delete(name);
+    }
+
+    public int getAttributes(String name)
+    {
+        int info = findInstanceIdInfo(name);
+        if (info != 0) {
+            int attr = (info >>> 16);
+            return attr;
+        }
+        if (prototypeValues != null) {
+            int id = prototypeValues.findId(name);
+            if (id != 0) {
+                return prototypeValues.getAttributes(id);
+            }
+        }
+        return super.getAttributes(name);
+    }
+
+    public void setAttributes(String name, int attributes)
+    {
+        ScriptableObject.checkValidAttributes(attributes);
+        int info = findInstanceIdInfo(name);
+        if (info != 0) {
+            int currentAttributes = (info >>> 16);
+            if (attributes != currentAttributes) {
+                throw new RuntimeException(
+                    "Change of attributes for this id is not supported");
+            }
+            return;
+        }
+        if (prototypeValues != null) {
+            int id = prototypeValues.findId(name);
+            if (id != 0) {
+                prototypeValues.setAttributes(id, attributes);
+                return;
+            }
+        }
+        super.setAttributes(name, attributes);
+    }
+
+    Object[] getIds(boolean getAll)
+    {
+        Object[] result = super.getIds(getAll);
+
+        if (prototypeValues != null) {
+            result = prototypeValues.getNames(getAll, result);
+        }
+
+        int maxInstanceId = getMaxInstanceId();
+        if (maxInstanceId != 0) {
+            Object[] ids = null;
+            int count = 0;
+
+            for (int id = maxInstanceId; id != 0; --id) {
+                String name = getInstanceIdName(id);
+                int info = findInstanceIdInfo(name);
+                if (info != 0) {
+                    int attr = (info >>> 16);
+                    if ((attr & PERMANENT) == 0) {
+                        if (NOT_FOUND == getInstanceIdValue(id)) {
+                            continue;
+                        }
+                    }
+                    if (getAll || (attr & DONTENUM) == 0) {
+                        if (count == 0) {
+                            // Need extra room for no more then [1..id] names
+                            ids = new Object[id];
+                        }
+                        ids[count++] = name;
+                    }
+                }
+            }
+            if (count != 0) {
+                if (result.length == 0 && ids.length == count) {
+                    result = ids;
+                }
+                else {
+                    Object[] tmp = new Object[result.length + count];
+                    System.arraycopy(result, 0, tmp, 0, result.length);
+                    System.arraycopy(ids, 0, tmp, result.length, count);
+                    result = tmp;
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Get maximum id findInstanceIdInfo can generate.
+     */
+    protected int getMaxInstanceId()
+    {
+        return 0;
+    }
+
+    protected static int instanceIdInfo(int attributes, int id)
+    {
+        return (attributes << 16) | id;
+    }
+
+    /**
+     * Map name to id of instance property.
+     * Should return 0 if not found or the result of
+     * {@link #instanceIdInfo(int, int)}.
+     */
+    protected int findInstanceIdInfo(String name)
+    {
+        return 0;
+    }
+
+    /** Map id back to property name it defines.
+     */
+    protected String getInstanceIdName(int id)
+    {
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+    /** Get id value.
+     ** If id value is constant, descendant can call cacheIdValue to store
+     ** value in the permanent cache.
+     ** Default implementation creates IdFunctionObject instance for given id
+     ** and cache its value
+     */
+    protected Object getInstanceIdValue(int id)
+    {
+        throw new IllegalStateException(String.valueOf(id));
+    }
+
+    /**
+     * Set or delete id value. If value == NOT_FOUND , the implementation
+     * should make sure that the following getInstanceIdValue return NOT_FOUND.
+     */
+    protected void setInstanceIdValue(int id, Object value)
+    {
+        throw new IllegalStateException(String.valueOf(id));
+    }
+
+    /** 'thisObj' will be null if invoked as constructor, in which case
+     ** instance of Scriptable should be returned. */
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        throw f.unknown();
+    }
+
+    public final IdFunctionObject exportAsJSClass(int maxPrototypeId,
+                                                  Scriptable scope,
+                                                  boolean sealed)
+    {
+        // Set scope and prototype unless this is top level scope itself
+        if (scope != this && scope != null) {
+            setParentScope(scope);
+            setPrototype(getObjectPrototype(scope));
+        }
+
+        activatePrototypeMap(maxPrototypeId);
+        IdFunctionObject ctor = prototypeValues.createPrecachedConstructor();
+        if (sealed) {
+            sealObject();
+        }
+        fillConstructorProperties(ctor);
+        if (sealed) {
+            ctor.sealObject();
+        }
+        ctor.exportAsScopeProperty();
+        return ctor;
+    }
+
+    public final boolean hasPrototypeMap()
+    {
+        return prototypeValues != null;
+    }
+
+    public final void activatePrototypeMap(int maxPrototypeId)
+    {
+        PrototypeValues values = new PrototypeValues(this, maxPrototypeId);
+        synchronized (this) {
+            if (prototypeValues != null)
+                throw new IllegalStateException();
+            prototypeValues = values;
+        }
+    }
+
+    public final void initPrototypeMethod(Object tag, int id, String name,
+                                          int arity)
+    {
+        Scriptable scope = ScriptableObject.getTopLevelScope(this);
+        IdFunctionObject f = newIdFunction(tag, id, name, arity, scope);
+        prototypeValues.initValue(id, name, f, DONTENUM);
+    }
+
+    public final void initPrototypeConstructor(IdFunctionObject f)
+    {
+        int id = prototypeValues.constructorId;
+        if (id == 0)
+            throw new IllegalStateException();
+        if (f.methodId() != id)
+            throw new IllegalArgumentException();
+        if (isSealed()) { f.sealObject(); }
+        prototypeValues.initValue(id, "constructor", f, DONTENUM);
+    }
+
+    public final void initPrototypeValue(int id, String name, Object value,
+                                         int attributes)
+    {
+        prototypeValues.initValue(id, name, value, attributes);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        throw new IllegalStateException(String.valueOf(id));
+    }
+
+    protected int findPrototypeId(String name)
+    {
+        throw new IllegalStateException(name);
+    }
+
+    protected void fillConstructorProperties(IdFunctionObject ctor)
+    {
+    }
+
+    protected void addIdFunctionProperty(Scriptable obj, Object tag, int id,
+                                         String name, int arity)
+    {
+        Scriptable scope = ScriptableObject.getTopLevelScope(obj);
+        IdFunctionObject f = newIdFunction(tag, id, name, arity, scope);
+        f.addAsProperty(obj);
+    }
+
+    /**
+     * Utility method to construct type error to indicate incompatible call
+     * when converting script thisObj to a particular type is not possible.
+     * Possible usage would be to have a private function like realThis:
+     * <pre>
+     *  private static NativeSomething realThis(Scriptable thisObj,
+     *                                          IdFunctionObject f)
+     *  {
+     *      if (!(thisObj instanceof NativeSomething))
+     *          throw incompatibleCallError(f);
+     *      return (NativeSomething)thisObj;
+     * }
+     * </pre>
+     * Note that although such function can be implemented universally via
+     * java.lang.Class.isInstance(), it would be much more slower.
+     * @param f function that is attempting to convert 'this'
+     * object.
+     * @return Scriptable object suitable for a check by the instanceof
+     * operator.
+     * @throws RuntimeException if no more instanceof target can be found
+     */
+    protected static EcmaError incompatibleCallError(IdFunctionObject f)
+    {
+        throw ScriptRuntime.typeError1("msg.incompat.call",
+                                       f.getFunctionName());
+    }
+
+    private IdFunctionObject newIdFunction(Object tag, int id, String name,
+                                           int arity, Scriptable scope)
+    {
+        IdFunctionObject f = new IdFunctionObject(this, tag, id, name, arity,
+                                                  scope);
+        if (isSealed()) { f.sealObject(); }
+        return f;
+    }
+
+    private void readObject(ObjectInputStream stream)
+        throws IOException, ClassNotFoundException
+    {
+        stream.defaultReadObject();
+        int maxPrototypeId = stream.readInt();
+        if (maxPrototypeId != 0) {
+            activatePrototypeMap(maxPrototypeId);
+        }
+    }
+
+    private void writeObject(ObjectOutputStream stream)
+        throws IOException
+    {
+        stream.defaultWriteObject();
+        int maxPrototypeId = 0;
+        if (prototypeValues != null) {
+            maxPrototypeId = prototypeValues.getMaxId();
+        }
+        stream.writeInt(maxPrototypeId);
+    }
+
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ImporterTopLevel.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ImporterTopLevel.java
new file mode 100644
index 0000000..294deab
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ImporterTopLevel.java
@@ -0,0 +1,318 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Matthias Radestock
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * Class ImporterTopLevel
+ *
+ * This class defines a ScriptableObject that can be instantiated
+ * as a top-level ("global") object to provide functionality similar
+ * to Java's "import" statement.
+ * <p>
+ * This class can be used to create a top-level scope using the following code:
+ * <pre>
+ *  Scriptable scope = new ImporterTopLevel(cx);
+ * </pre>
+ * Then JavaScript code will have access to the following methods:
+ * <ul>
+ * <li>importClass - will "import" a class by making its unqualified name
+ *                   available as a property of the top-level scope
+ * <li>importPackage - will "import" all the classes of the package by
+ *                     searching for unqualified names as classes qualified
+ *                     by the given package.
+ * </ul>
+ * The following code from the shell illustrates this use:
+ * <pre>
+ * js> importClass(java.io.File)
+ * js> f = new File('help.txt')
+ * help.txt
+ * js> importPackage(java.util)
+ * js> v = new Vector()
+ * []
+ *
+ * @author Norris Boyd
+ */
+public class ImporterTopLevel extends IdScriptableObject
+{
+    static final long serialVersionUID = -9095380847465315412L;
+
+    private static final Object IMPORTER_TAG = new Object();
+
+    public ImporterTopLevel() { }
+
+    public ImporterTopLevel(Context cx) {
+        this(cx, false);
+    }
+
+    public ImporterTopLevel(Context cx, boolean sealed)
+    {
+        initStandardObjects(cx, sealed);
+    }
+
+    public String getClassName()
+    {
+        return (topScopeFlag) ? "global" : "JavaImporter";
+    }
+
+    public static void init(Context cx, Scriptable scope, boolean sealed)
+    {
+        ImporterTopLevel obj = new ImporterTopLevel();
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    public void initStandardObjects(Context cx, boolean sealed)
+    {
+        // Assume that Context.initStandardObjects initialize JavaImporter
+        // property lazily so the above init call is not yet called
+        cx.initStandardObjects(this, sealed);
+        topScopeFlag = true;
+        // If seal is true then exportAsJSClass(cx, seal) would seal
+        // this obj. Since this is scope as well, it would not allow
+        // to add variables.
+        IdFunctionObject ctor = exportAsJSClass(MAX_PROTOTYPE_ID, this, false);
+        if (sealed) {
+            ctor.sealObject();
+        }
+        // delete "constructor" defined by exportAsJSClass so "constructor"
+        // name would refer to Object.constructor
+        // and not to JavaImporter.prototype.constructor.
+        delete("constructor");
+    }
+
+    public boolean has(String name, Scriptable start) {
+        return super.has(name, start)
+               || getPackageProperty(name, start) != NOT_FOUND;
+    }
+
+    public Object get(String name, Scriptable start) {
+        Object result = super.get(name, start);
+        if (result != NOT_FOUND)
+            return result;
+        result = getPackageProperty(name, start);
+        return result;
+    }
+
+    private Object getPackageProperty(String name, Scriptable start) {
+        Object result = NOT_FOUND;
+        Object[] elements;
+        synchronized (importedPackages) {
+            elements = importedPackages.toArray();
+        }
+        for (int i=0; i < elements.length; i++) {
+            NativeJavaPackage p = (NativeJavaPackage) elements[i];
+            Object v = p.getPkgProperty(name, start, false);
+            if (v != null && !(v instanceof NativeJavaPackage)) {
+                if (result == NOT_FOUND) {
+                    result = v;
+                } else {
+                    throw Context.reportRuntimeError2(
+                        "msg.ambig.import", result.toString(), v.toString());
+                }
+            }
+        }
+        return result;
+    }
+
+    /**
+     * @deprecated Kept only for compatibility.
+     */
+    public void importPackage(Context cx, Scriptable thisObj, Object[] args,
+                              Function funObj)
+    {
+        js_importPackage(args);
+    }
+
+    private Object js_construct(Scriptable scope, Object[] args)
+    {
+        ImporterTopLevel result = new ImporterTopLevel();
+        for (int i = 0; i != args.length; ++i) {
+            Object arg = args[i];
+            if (arg instanceof NativeJavaClass) {
+                result.importClass((NativeJavaClass)arg);
+            } else if (arg instanceof NativeJavaPackage) {
+                result.importPackage((NativeJavaPackage)arg);
+            } else {
+                throw Context.reportRuntimeError1(
+                    "msg.not.class.not.pkg", Context.toString(arg));
+            }
+        }
+        // set explicitly prototype and scope
+        // as otherwise in top scope mode BaseFunction.construct
+        // would keep them set to null. It also allow to use
+        // JavaImporter without new and still get properly
+        // initialized object.
+        result.setParentScope(scope);
+        result.setPrototype(this);
+        return result;
+    }
+
+    private Object js_importClass(Object[] args)
+    {
+        for (int i = 0; i != args.length; i++) {
+            Object arg = args[i];
+            if (!(arg instanceof NativeJavaClass)) {
+                throw Context.reportRuntimeError1(
+                    "msg.not.class", Context.toString(arg));
+            }
+            importClass((NativeJavaClass)arg);
+        }
+        return Undefined.instance;
+    }
+
+    private Object js_importPackage(Object[] args)
+    {
+        for (int i = 0; i != args.length; i++) {
+            Object arg = args[i];
+            if (!(arg instanceof NativeJavaPackage)) {
+                throw Context.reportRuntimeError1(
+                    "msg.not.pkg", Context.toString(arg));
+            }
+            importPackage((NativeJavaPackage)arg);
+        }
+        return Undefined.instance;
+    }
+
+    private void importPackage(NativeJavaPackage pkg)
+    {
+        if(pkg == null) {
+            return;
+        }
+        synchronized (importedPackages) {
+            for (int j = 0; j != importedPackages.size(); j++) {
+                if (pkg.equals(importedPackages.get(j))) {
+                    return;
+                }
+            }
+            importedPackages.add(pkg);
+        }
+    }
+
+    private void importClass(NativeJavaClass cl)
+    {
+        String s = cl.getClassObject().getName();
+        String n = s.substring(s.lastIndexOf('.')+1);
+        Object val = get(n, this);
+        if (val != NOT_FOUND && val != cl) {
+            throw Context.reportRuntimeError1("msg.prop.defined", n);
+        }
+        //defineProperty(n, cl, DONTENUM);
+        put(n, this, cl);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor:   arity=0; s="constructor";   break;
+          case Id_importClass:   arity=1; s="importClass";   break;
+          case Id_importPackage: arity=1; s="importPackage"; break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(IMPORTER_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(IMPORTER_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case Id_constructor:
+            return js_construct(scope, args);
+
+          case Id_importClass:
+            return realThis(thisObj, f).js_importClass(args);
+
+          case Id_importPackage:
+            return realThis(thisObj, f).js_importPackage(args);
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+    private ImporterTopLevel realThis(Scriptable thisObj, IdFunctionObject f)
+    {
+        if (topScopeFlag) {
+            // when used as top scope importPackage and importClass are global
+            // function that ignore thisObj
+            return this;
+        }
+        if (!(thisObj instanceof ImporterTopLevel))
+            throw incompatibleCallError(f);
+        return (ImporterTopLevel)thisObj;
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:15:24 EDT
+        L0: { id = 0; String X = null; int c;
+            int s_length = s.length();
+            if (s_length==11) {
+                c=s.charAt(0);
+                if (c=='c') { X="constructor";id=Id_constructor; }
+                else if (c=='i') { X="importClass";id=Id_importClass; }
+            }
+            else if (s_length==13) { X="importPackage";id=Id_importPackage; }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor          = 1,
+        Id_importClass          = 2,
+        Id_importPackage        = 3,
+        MAX_PROTOTYPE_ID        = 3;
+
+// #/string_id_map#
+
+    private ObjArray importedPackages = new ObjArray();
+    private boolean topScopeFlag;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InformativeParser.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InformativeParser.java
new file mode 100644
index 0000000..c73db34
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InformativeParser.java
@@ -0,0 +1,225 @@
+package org.mozilla.javascript;
+
+import java.io.IOException;
+
+/**
+ *  Subclass of Rhino's Parser that saves information about the token stream
+ *  and error message to allow more helpful error messages.
+ *
+ * @author David Greenspan for AppJet
+ */
+
+/*
+  This class is written with speed in mind, to some extent.  Rhino's tokenizer
+  is pretty efficient, and we wouldn't want to slow it down by, for example,
+  creating a TokenInfo object on the heap for every token seen.
+ */
+
+/*APPJET*/
+public class InformativeParser extends Parser {
+
+    public static class InformativeEvaluatorException extends EvaluatorException {
+	final ParseErrorInfo pei;
+	
+	InformativeEvaluatorException(String errorMessage,
+				      String sourceName, int lineNumber,
+				      String lineSource, int columnNumber,
+				      ParseErrorInfo peInfo) {
+	    super(errorMessage, sourceName,
+		  lineNumber, lineSource, columnNumber);
+	    pei = peInfo;
+	}
+
+	public ParseErrorInfo getParseErrorInfo() {
+	    return pei;
+	}
+    }
+
+    public static class ParseErrorInfo {
+	ParseErrorInfo() {}
+
+	String messageId = null;
+	String messageArg = null;
+	
+	final int tokenMaxHistory = 10;
+	// ring buffers
+	final int[] tokenTypes = new int[tokenMaxHistory];
+	final String[] tokenStrings = new String[tokenMaxHistory];
+	final double[] tokenNumbers = new double[tokenMaxHistory];
+	final int[] tokenLineNumbers = new int[tokenMaxHistory];
+	final int[] tokenLineOffsets = new int[tokenMaxHistory];
+	int nextBufPos = 0;
+	int historyLength = 0;
+	boolean tokenPeeking = false;
+	int peekSlot;
+
+	void reportPeekToken(int type, String str, double num, int lineno,
+			     int lineOffset) {
+	    if (! tokenPeeking) {
+		peekSlot = nextBufPos;
+		tokenTypes[nextBufPos] = type;
+		tokenStrings[nextBufPos] = str;
+		tokenNumbers[nextBufPos] = num;
+		tokenLineNumbers[nextBufPos] = lineno;
+		tokenLineOffsets[nextBufPos] = lineOffset;
+		
+		nextBufPos++;
+		if (nextBufPos == tokenMaxHistory) nextBufPos = 0;
+		if (historyLength < tokenMaxHistory) historyLength++;
+		tokenPeeking = true;
+	    }
+	}
+
+	void reportConsumeToken() {
+	    tokenPeeking = false;
+	}
+
+	private TokenInfo backToken(int n) {
+	    // 0 is most recent token added to history
+	    if (n >= historyLength) return null;
+	    int i = (nextBufPos - 1 - n);
+	    while (i < 0) i += tokenMaxHistory;
+	    return new TokenInfo(tokenTypes[i], tokenStrings[i],
+				 tokenNumbers[i], tokenLineNumbers[i],
+				 tokenLineOffsets[i]);
+	}
+	
+	public String getMessageId() { return messageId; }
+	public String getMessageArg() { return messageArg; }
+	public TokenInfo getPeekToken() {
+	    if (tokenPeeking) return backToken(0);
+	    return null;
+	}
+	public TokenInfo getPrevToken(int n) {
+	    // 1 = last non-peek token seen, 2 = before that, etc.
+	    if (! tokenPeeking) n--;
+	    return backToken(n);
+	}
+	public TokenInfo getPrevToken() {
+	    return getPrevToken(1);
+	}
+    }
+
+    public static class TokenInfo {
+	private int type, lineno, lineOffset;
+	private String str;
+	private double num;
+	TokenInfo(int type, String str, double num, int lineno,
+		  int lineOffset) {
+	    this.type = type; this.str = str; this.num = num;
+	    this.lineno = lineno; this.lineOffset = lineOffset;
+	}
+	public int getType() { return type; }
+	public int getLineNumber() { return lineno; }
+	public int getLineOffset() { return lineOffset; }
+	public double getNumber() { return num; }
+	public String getString() { return str; }
+    }
+    
+    ParseErrorInfo info = new ParseErrorInfo();
+
+    void doErrorReporterError(String message, String sourceURI, int line,
+			      String lineText, int lineOffset) {
+	
+	throw new InformativeEvaluatorException(message, sourceURI, line,
+						lineText, lineOffset, info);
+	
+    }
+    
+    public InformativeParser(CompilerEnvirons compilerEnv) {
+	// we override most calls to the parent's ErrorReporter anyway
+	super(compilerEnv, DefaultErrorReporter.instance);
+    }
+
+    @Override int peekToken() throws IOException {
+	int tt = super.peekToken();
+	info.reportPeekToken(tt, ts.getString(), ts.getNumber(),
+			     ts.getLineno(), ts.getOffset());
+	return tt;
+    }
+    @Override void consumeToken() {
+	super.consumeToken();
+	info.reportConsumeToken();
+    }
+
+    @Override void addWarning(String messageId, String messageArg)
+    {
+	info.messageId = messageId;
+	info.messageArg = messageArg;
+	
+        String message = ScriptRuntime.getMessage1(messageId, messageArg);
+        if (compilerEnv.reportWarningAsError()) {
+            ++syntaxErrorCount;
+            doErrorReporterError(message, sourceURI, ts.getLineno(),
+				 ts.getLine(), ts.getOffset());
+        }
+	else { /* don't report */ }
+    }
+    
+    @Override void addError(String messageId)
+    {
+	info.messageId = messageId;
+	
+	++syntaxErrorCount;
+        String message = ScriptRuntime.getMessage0(messageId);
+        doErrorReporterError(message, sourceURI, ts.getLineno(),
+			     ts.getLine(), ts.getOffset());
+    }
+
+    @Override void addError(String messageId, String messageArg)
+    {
+	info.messageId = messageId;
+	info.messageArg = messageArg;
+	
+	++syntaxErrorCount;
+        String message = ScriptRuntime.getMessage1(messageId, messageArg);
+        doErrorReporterError(message, sourceURI, ts.getLineno(),
+			     ts.getLine(), ts.getOffset());
+    }
+
+    @Override protected Decompiler createDecompiler(CompilerEnvirons env) {
+	return new MyDecompiler();
+    }
+    
+    public static final ErrorReporter THROW_INFORMATIVE_ERRORS
+	= new ErrorReporter() {
+		public void warning(String message, String sourceURI, int line,
+				    String lineText, int lineOffset) {
+		    DefaultErrorReporter.instance.warning
+			(message, sourceURI, line, lineText, lineOffset);
+		}
+		public void error(String message, String sourceURI, int line,
+				  String lineText, int lineOffset) {
+		    DefaultErrorReporter.instance.error
+			(message, sourceURI, line, lineText, lineOffset);
+		}
+		public EvaluatorException runtimeError(String message,
+						       String sourceURI,
+						       int line, String lineText,
+						       int lineOffset) {
+		    return DefaultErrorReporter.instance.runtimeError
+			(message, sourceURI, line, lineText, lineOffset);
+		}
+		
+	    };
+    
+    public static Parser makeParser(CompilerEnvirons compilerEnv,
+				    ErrorReporter errorReporter) {
+	if (errorReporter == THROW_INFORMATIVE_ERRORS) {
+	    return new InformativeParser(compilerEnv);
+	}
+	else {
+	    return new Parser(compilerEnv, errorReporter);
+	}
+    }
+
+    private class MyDecompiler extends Decompiler {
+	@Override void addRegexp(String regexp, String flags) {
+	    super.addRegexp(regexp, flags);
+	    String str = '/'+regexp+'/'+flags;
+	    info.reportPeekToken(Token.REGEXP, str, ts.getNumber(),
+				 ts.getLineno(), ts.getOffset());
+	    info.reportConsumeToken();
+	}
+    }
+}
\ No newline at end of file
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java
new file mode 100644
index 0000000..877e6a2
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java
@@ -0,0 +1,156 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.Method;
+
+/**
+ * Adapter to use JS function as implementation of Java interfaces with
+ * single method or multiple methods with the same signature.
+ */
+public class InterfaceAdapter
+{
+    private final Object proxyHelper;
+
+    /**
+     * Make glue object implementing interface cl that will
+     * call the supplied JS function when called.
+     * Only interfaces were all methods have the same signature is supported.
+     *
+     * @return The glue object or null if <tt>cl</tt> is not interface or
+     *         has methods with different signatures.
+     */
+    static Object create(Context cx, Class cl, Callable function)
+    {
+        if (!cl.isInterface()) throw new IllegalArgumentException();
+
+        Scriptable topScope = ScriptRuntime.getTopCallScope(cx);
+        ClassCache cache = ClassCache.get(topScope);
+        InterfaceAdapter adapter;
+        adapter = (InterfaceAdapter)cache.getInterfaceAdapter(cl);
+        ContextFactory cf = cx.getFactory();
+        if (adapter == null) {
+            Method[] methods = cl.getMethods();
+            if (methods.length == 0) {
+                throw Context.reportRuntimeError2(
+                    "msg.no.empty.interface.conversion",
+                    String.valueOf(function),
+                    cl.getClass().getName());
+            }
+            boolean canCallFunction = false;
+          canCallFunctionChecks: {
+                Class[] argTypes = methods[0].getParameterTypes();
+                // check that the rest of methods has the same signature
+                for (int i = 1; i != methods.length; ++i) {
+                    Class[] types2 = methods[i].getParameterTypes();
+                    if (types2.length != argTypes.length) {
+                        break canCallFunctionChecks;
+                    }
+                    for (int j = 0; j != argTypes.length; ++j) {
+                        if (types2[j] != argTypes[j]) {
+                            break canCallFunctionChecks;
+                        }
+                    }
+                }
+                canCallFunction= true;
+            }
+            if (!canCallFunction) {
+                throw Context.reportRuntimeError2(
+                    "msg.no.function.interface.conversion",
+                    String.valueOf(function),
+                    cl.getClass().getName());
+            }
+            adapter = new InterfaceAdapter(cf, cl);
+            cache.cacheInterfaceAdapter(cl, adapter);
+        }
+        return VMBridge.instance.newInterfaceProxy(
+            adapter.proxyHelper, cf, adapter, function, topScope);
+    }
+
+    private InterfaceAdapter(ContextFactory cf, Class cl)
+    {
+        this.proxyHelper
+            = VMBridge.instance.getInterfaceProxyHelper(
+                cf, new Class[] { cl });
+    }
+
+    public Object invoke(ContextFactory cf,
+                         final Object target,
+                         final Scriptable topScope,
+                         final Method method,
+                         final Object[] args)
+    {
+        ContextAction action = new ContextAction() {
+                public Object run(Context cx)
+                {
+                    return invokeImpl(cx, target, topScope, method, args);
+                }
+            };
+        return cf.call(action);
+    }
+
+    Object invokeImpl(Context cx,
+                      Object target,
+                      Scriptable topScope,
+                      Method method,
+                      Object[] args)
+    {
+        int N = (args == null) ? 0 : args.length;
+
+        Callable function = (Callable)target;
+        Scriptable thisObj = topScope;
+        Object[] jsargs = new Object[N + 1];
+        jsargs[N] = method.getName();
+        if (N != 0) {
+            WrapFactory wf = cx.getWrapFactory();
+            for (int i = 0; i != N; ++i) {
+                jsargs[i] = wf.wrap(cx, topScope, args[i], null);
+            }
+        }
+
+        Object result = function.call(cx, topScope, thisObj, jsargs);
+        Class javaResultType = method.getReturnType();
+        if (javaResultType == Void.TYPE) {
+            result = null;
+        } else {
+            result = Context.jsToJava(result, javaResultType);
+        }
+        return result;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterpretedFunction.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterpretedFunction.java
new file mode 100644
index 0000000..db84299
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterpretedFunction.java
@@ -0,0 +1,221 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import org.mozilla.javascript.debug.DebuggableScript;
+
+final class InterpretedFunction extends NativeFunction implements Script
+{
+    static final long serialVersionUID = 541475680333911468L;
+
+    InterpreterData idata;
+    SecurityController securityController;
+    Object securityDomain;
+    Scriptable[] functionRegExps;
+
+    private InterpretedFunction(InterpreterData idata,
+                                Object staticSecurityDomain)
+    {
+        this.idata = idata;
+
+        // Always get Context from the current thread to
+        // avoid security breaches via passing mangled Context instances
+        // with bogus SecurityController
+        Context cx = Context.getContext();
+        SecurityController sc = cx.getSecurityController();
+        Object dynamicDomain;
+        if (sc != null) {
+            dynamicDomain = sc.getDynamicSecurityDomain(staticSecurityDomain);
+        } else {
+            if (staticSecurityDomain != null) {
+                throw new IllegalArgumentException();
+            }
+            dynamicDomain = null;
+        }
+
+        this.securityController = sc;
+        this.securityDomain = dynamicDomain;
+    }
+
+    private InterpretedFunction(InterpretedFunction parent, int index)
+    {
+        this.idata = parent.idata.itsNestedFunctions[index];
+        this.securityController = parent.securityController;
+        this.securityDomain = parent.securityDomain;
+    }
+
+    /**
+     * Create script from compiled bytecode.
+     */
+    static InterpretedFunction createScript(InterpreterData idata,
+                                            Object staticSecurityDomain)
+    {
+        InterpretedFunction f;
+        f = new InterpretedFunction(idata, staticSecurityDomain);
+        return f;
+    }
+
+    /**
+     * Create function compiled from Function(...) constructor.
+     */
+    static InterpretedFunction createFunction(Context cx,Scriptable scope,
+                                              InterpreterData idata,
+                                              Object staticSecurityDomain)
+    {
+        InterpretedFunction f;
+        f = new InterpretedFunction(idata, staticSecurityDomain);
+        f.initInterpretedFunction(cx, scope);
+        return f;
+    }
+
+    /**
+     * Create function embedded in script or another function.
+     */
+    static InterpretedFunction createFunction(Context cx, Scriptable scope,
+                                              InterpretedFunction  parent,
+                                              int index)
+    {
+        InterpretedFunction f = new InterpretedFunction(parent, index);
+        f.initInterpretedFunction(cx, scope);
+        return f;
+    }
+
+    Scriptable[] createRegExpWraps(Context cx, Scriptable scope)
+    {
+        if (idata.itsRegExpLiterals == null) Kit.codeBug();
+
+        RegExpProxy rep = ScriptRuntime.checkRegExpProxy(cx);
+        int N = idata.itsRegExpLiterals.length;
+        Scriptable[] array = new Scriptable[N];
+        for (int i = 0; i != N; ++i) {
+            array[i] = rep.wrapRegExp(cx, scope, idata.itsRegExpLiterals[i]);
+        }
+        return array;
+    }
+
+    private void initInterpretedFunction(Context cx, Scriptable scope)
+    {
+        initScriptFunction(cx, scope);
+        if (idata.itsRegExpLiterals != null) {
+            functionRegExps = createRegExpWraps(cx, scope);
+        }
+    }
+
+    public String getFunctionName()
+    {
+        return (idata.itsName == null) ? "" : idata.itsName;
+    }
+
+    /**
+     * Calls the function.
+     * @param cx the current context 
+     * @param scope the scope used for the call
+     * @param thisObj the value of "this"
+     * @param args function arguments. Must not be null. You can use 
+     * {@link ScriptRuntime#emptyArgs} to pass empty arguments.
+     * @return the result of the function call.
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        if (!ScriptRuntime.hasTopCall(cx)) {
+            return ScriptRuntime.doTopCall(this, cx, scope, thisObj, args);
+        }
+        return Interpreter.interpret(this, cx, scope, thisObj, args);
+    }
+
+    public Object exec(Context cx, Scriptable scope)
+    {
+        if (idata.itsFunctionType != 0) {
+            // Can only be applied to scripts
+            throw new IllegalStateException();
+        }
+        if (!ScriptRuntime.hasTopCall(cx)) {
+            // It will go through "call" path. but they are equivalent
+            return ScriptRuntime.doTopCall(
+                this, cx, scope, scope, ScriptRuntime.emptyArgs);
+        }
+        return Interpreter.interpret(
+            this, cx, scope, scope, ScriptRuntime.emptyArgs);
+    }
+
+    public String getEncodedSource()
+    {
+        return Interpreter.getEncodedSource(idata);
+    }
+
+    public DebuggableScript getDebuggableView()
+    {
+        return idata;
+    }
+
+    public Object resumeGenerator(Context cx, Scriptable scope, int operation,
+                                  Object state, Object value)
+    {
+        return Interpreter.resumeGenerator(cx, scope, operation, state, value);
+    }
+
+    protected int getLanguageVersion()
+    {
+        return idata.languageVersion;
+    }
+
+    protected int getParamCount()
+    {
+        return idata.argCount;
+    }
+
+    protected int getParamAndVarCount()
+    {
+        return idata.argNames.length;
+    }
+
+    protected String getParamOrVarName(int index)
+    {
+        return idata.argNames[index];
+    }
+
+    protected boolean getParamOrVarConst(int index)
+    {
+        return idata.argIsConst[index];
+    }
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Interpreter.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Interpreter.java
new file mode 100644
index 0000000..a68c025
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Interpreter.java
@@ -0,0 +1,4643 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Patrick Beard
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Ethan Hugg
+ *   Bob Jervis
+ *   Terry Lucas
+ *   Roger Lawrence
+ *   Milen Nankov
+ *   Hannes Wallnoefer
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.PrintStream;
+import java.io.Serializable;
+import java.util.List;
+import java.util.ArrayList;
+
+import org.mozilla.javascript.continuations.Continuation;
+import org.mozilla.javascript.debug.DebugFrame;
+
+public class Interpreter implements Evaluator
+{
+
+// Additional interpreter-specific codes
+
+    private static final int
+
+    // Stack: ... value1 -> ... value1 value1
+        Icode_DUP                       = -1,
+
+    // Stack: ... value2 value1 -> ... value2 value1 value2 value1
+        Icode_DUP2                      = -2,
+
+    // Stack: ... value2 value1 -> ... value1 value2
+        Icode_SWAP                      = -3,
+
+    // Stack: ... value1 -> ...
+        Icode_POP                       = -4,
+
+    // Store stack top into return register and then pop it
+        Icode_POP_RESULT                = -5,
+
+    // To jump conditionally and pop additional stack value
+        Icode_IFEQ_POP                  = -6,
+
+    // various types of ++/--
+        Icode_VAR_INC_DEC               = -7,
+        Icode_NAME_INC_DEC              = -8,
+        Icode_PROP_INC_DEC              = -9,
+        Icode_ELEM_INC_DEC              = -10,
+        Icode_REF_INC_DEC               = -11,
+
+    // load/save scope from/to local
+        Icode_SCOPE_LOAD                = -12,
+        Icode_SCOPE_SAVE                = -13,
+
+        Icode_TYPEOFNAME                = -14,
+
+    // helper for function calls
+        Icode_NAME_AND_THIS             = -15,
+        Icode_PROP_AND_THIS             = -16,
+        Icode_ELEM_AND_THIS             = -17,
+        Icode_VALUE_AND_THIS            = -18,
+
+    // Create closure object for nested functions
+        Icode_CLOSURE_EXPR              = -19,
+        Icode_CLOSURE_STMT              = -20,
+
+    // Special calls
+        Icode_CALLSPECIAL               = -21,
+
+    // To return undefined value
+        Icode_RETUNDEF                  = -22,
+
+    // Exception handling implementation
+        Icode_GOSUB                     = -23,
+        Icode_STARTSUB                  = -24,
+        Icode_RETSUB                    = -25,
+
+    // To indicating a line number change in icodes.
+        Icode_LINE                      = -26,
+
+    // To store shorts and ints inline
+        Icode_SHORTNUMBER               = -27,
+        Icode_INTNUMBER                 = -28,
+
+    // To create and populate array to hold values for [] and {} literals
+        Icode_LITERAL_NEW               = -29,
+        Icode_LITERAL_SET               = -30,
+
+    // Array literal with skipped index like [1,,2]
+        Icode_SPARE_ARRAYLIT            = -31,
+
+    // Load index register to prepare for the following index operation
+        Icode_REG_IND_C0                = -32,
+        Icode_REG_IND_C1                = -33,
+        Icode_REG_IND_C2                = -34,
+        Icode_REG_IND_C3                = -35,
+        Icode_REG_IND_C4                = -36,
+        Icode_REG_IND_C5                = -37,
+        Icode_REG_IND1                  = -38,
+        Icode_REG_IND2                  = -39,
+        Icode_REG_IND4                  = -40,
+
+    // Load string register to prepare for the following string operation
+        Icode_REG_STR_C0                = -41,
+        Icode_REG_STR_C1                = -42,
+        Icode_REG_STR_C2                = -43,
+        Icode_REG_STR_C3                = -44,
+        Icode_REG_STR1                  = -45,
+        Icode_REG_STR2                  = -46,
+        Icode_REG_STR4                  = -47,
+
+    // Version of getvar/setvar that read var index directly from bytecode
+        Icode_GETVAR1                   = -48,
+        Icode_SETVAR1                   = -49,
+
+    // Load unefined
+        Icode_UNDEF                     = -50,
+        Icode_ZERO                      = -51,
+        Icode_ONE                       = -52,
+
+    // entrance and exit from .()
+       Icode_ENTERDQ                    = -53,
+       Icode_LEAVEDQ                    = -54,
+
+       Icode_TAIL_CALL                  = -55,
+
+    // Clear local to allow GC its context
+       Icode_LOCAL_CLEAR                = -56,
+
+    // Literal get/set
+       Icode_LITERAL_GETTER             = -57,
+       Icode_LITERAL_SETTER             = -58,
+
+    // const
+       Icode_SETCONST                   = -59,
+       Icode_SETCONSTVAR                = -60,
+       Icode_SETCONSTVAR1               = -61,
+
+    // Generator opcodes (along with Token.YIELD)
+       Icode_GENERATOR                  = -62,
+       Icode_GENERATOR_END              = -63,
+
+       Icode_DEBUGGER                   = -64,
+
+       // Last icode
+        MIN_ICODE                       = -64;
+
+    // data for parsing
+
+    private CompilerEnvirons compilerEnv;
+
+    private boolean itsInFunctionFlag;
+    private boolean itsInTryFlag;
+
+    private InterpreterData itsData;
+    private ScriptOrFnNode scriptOrFn;
+    private int itsICodeTop;
+    private int itsStackDepth;
+    private int itsLineNumber;
+    private int itsDoubleTableTop;
+    private ObjToIntMap itsStrings = new ObjToIntMap(20);
+    private int itsLocalTop;
+
+    private static final int MIN_LABEL_TABLE_SIZE = 32;
+    private static final int MIN_FIXUP_TABLE_SIZE = 40;
+    private int[] itsLabelTable;
+    private int itsLabelTableTop;
+// itsFixupTable[i] = (label_index << 32) | fixup_site
+    private long[] itsFixupTable;
+    private int itsFixupTableTop;
+    private ObjArray itsLiteralIds = new ObjArray();
+
+    private int itsExceptionTableTop;
+    private static final int EXCEPTION_TRY_START_SLOT  = 0;
+    private static final int EXCEPTION_TRY_END_SLOT    = 1;
+    private static final int EXCEPTION_HANDLER_SLOT    = 2;
+    private static final int EXCEPTION_TYPE_SLOT       = 3;
+    private static final int EXCEPTION_LOCAL_SLOT      = 4;
+    private static final int EXCEPTION_SCOPE_SLOT      = 5;
+    // SLOT_SIZE: space for try start/end, handler, start, handler type,
+    //            exception local and scope local
+    private static final int EXCEPTION_SLOT_SIZE       = 6;
+
+// ECF_ or Expression Context Flags constants: for now only TAIL is available
+    private static final int ECF_TAIL = 1 << 0;
+
+    /**
+     * Class to hold data corresponding to one interpreted call stack frame.
+     */
+    private static class CallFrame implements Cloneable, Serializable
+    {
+        static final long serialVersionUID = -2843792508994958978L;
+
+        CallFrame parentFrame;
+        // amount of stack frames before this one on the interpretation stack
+        int frameIndex;
+        // If true indicates read-only frame that is a part of continuation
+        boolean frozen;
+
+        InterpretedFunction fnOrScript;
+        InterpreterData idata;
+
+// Stack structure
+// stack[0 <= i < localShift]: arguments and local variables
+// stack[localShift <= i <= emptyStackTop]: used for local temporaries
+// stack[emptyStackTop < i < stack.length]: stack data
+// sDbl[i]: if stack[i] is UniqueTag.DOUBLE_MARK, sDbl[i] holds the number value
+
+        Object[] stack;
+        int[] stackAttributes;
+        double[] sDbl;
+        CallFrame varSource; // defaults to this unless continuation frame
+        int localShift;
+        int emptyStackTop;
+
+        DebugFrame debuggerFrame;
+        boolean useActivation;
+
+        Scriptable thisObj;
+        Scriptable[] scriptRegExps;
+
+// The values that change during interpretation
+
+        Object result;
+        double resultDbl;
+        int pc;
+        int pcPrevBranch;
+        int pcSourceLineStart;
+        Scriptable scope;
+
+        int savedStackTop;
+        int savedCallOp;
+        Object throwable;
+
+        CallFrame cloneFrozen()
+        {
+            if (!frozen) Kit.codeBug();
+
+            CallFrame copy;
+            try {
+                copy = (CallFrame)clone();
+            } catch (CloneNotSupportedException ex) {
+                throw new IllegalStateException();
+            }
+
+            // clone stack but keep varSource to point to values
+            // from this frame to share variables.
+
+            copy.stack = stack.clone();
+            copy.stackAttributes = stackAttributes.clone();
+            copy.sDbl = sDbl.clone();
+
+            copy.frozen = false;
+            return copy;
+        }
+    }
+
+    private static final class ContinuationJump implements Serializable
+    {
+        static final long serialVersionUID = 7687739156004308247L;
+
+        CallFrame capturedFrame;
+        CallFrame branchFrame;
+        Object result;
+        double resultDbl;
+
+        ContinuationJump(Continuation c, CallFrame current)
+        {
+            this.capturedFrame = (CallFrame)c.getImplementation();
+            if (this.capturedFrame == null || current == null) {
+                // Continuation and current execution does not share
+                // any frames if there is nothing to capture or
+                // if there is no currently executed frames
+                this.branchFrame = null;
+            } else {
+                // Search for branch frame where parent frame chains starting
+                // from captured and current meet.
+                CallFrame chain1 = this.capturedFrame;
+                CallFrame chain2 = current;
+
+                // First work parents of chain1 or chain2 until the same
+                // frame depth.
+                int diff = chain1.frameIndex - chain2.frameIndex;
+                if (diff != 0) {
+                    if (diff < 0) {
+                        // swap to make sure that
+                        // chain1.frameIndex > chain2.frameIndex and diff > 0
+                        chain1 = current;
+                        chain2 = this.capturedFrame;
+                        diff = -diff;
+                    }
+                    do {
+                        chain1 = chain1.parentFrame;
+                    } while (--diff != 0);
+                    if (chain1.frameIndex != chain2.frameIndex) Kit.codeBug();
+                }
+
+                // Now walk parents in parallel until a shared frame is found
+                // or until the root is reached.
+                while (chain1 != chain2 && chain1 != null) {
+                    chain1 = chain1.parentFrame;
+                    chain2 = chain2.parentFrame;
+                }
+
+                this.branchFrame = chain1;
+                if (this.branchFrame != null && !this.branchFrame.frozen)
+                    Kit.codeBug();
+            }
+        }
+    }
+
+    private static CallFrame captureFrameForGenerator(CallFrame frame) {
+      frame.frozen = true;
+      CallFrame result = frame.cloneFrozen();
+      frame.frozen = false;
+
+      // now isolate this frame from its previous context
+      result.parentFrame = null;
+      result.frameIndex = 0;
+
+      return result;
+    }
+
+    static {
+        // Checks for byte code consistencies, good compiler can eliminate them
+
+        if (Token.LAST_BYTECODE_TOKEN > 127) {
+            String str = "Violation of Token.LAST_BYTECODE_TOKEN <= 127";
+            System.err.println(str);
+            throw new IllegalStateException(str);
+        }
+        if (MIN_ICODE < -128) {
+            String str = "Violation of Interpreter.MIN_ICODE >= -128";
+            System.err.println(str);
+            throw new IllegalStateException(str);
+        }
+    }
+
+    private static String bytecodeName(int bytecode)
+    {
+        if (!validBytecode(bytecode)) {
+            throw new IllegalArgumentException(String.valueOf(bytecode));
+        }
+
+        if (!Token.printICode) {
+            return String.valueOf(bytecode);
+        }
+
+        if (validTokenCode(bytecode)) {
+            return Token.name(bytecode);
+        }
+
+        switch (bytecode) {
+          case Icode_DUP:              return "DUP";
+          case Icode_DUP2:             return "DUP2";
+          case Icode_SWAP:             return "SWAP";
+          case Icode_POP:              return "POP";
+          case Icode_POP_RESULT:       return "POP_RESULT";
+          case Icode_IFEQ_POP:         return "IFEQ_POP";
+          case Icode_VAR_INC_DEC:      return "VAR_INC_DEC";
+          case Icode_NAME_INC_DEC:     return "NAME_INC_DEC";
+          case Icode_PROP_INC_DEC:     return "PROP_INC_DEC";
+          case Icode_ELEM_INC_DEC:     return "ELEM_INC_DEC";
+          case Icode_REF_INC_DEC:      return "REF_INC_DEC";
+          case Icode_SCOPE_LOAD:       return "SCOPE_LOAD";
+          case Icode_SCOPE_SAVE:       return "SCOPE_SAVE";
+          case Icode_TYPEOFNAME:       return "TYPEOFNAME";
+          case Icode_NAME_AND_THIS:    return "NAME_AND_THIS";
+          case Icode_PROP_AND_THIS:    return "PROP_AND_THIS";
+          case Icode_ELEM_AND_THIS:    return "ELEM_AND_THIS";
+          case Icode_VALUE_AND_THIS:   return "VALUE_AND_THIS";
+          case Icode_CLOSURE_EXPR:     return "CLOSURE_EXPR";
+          case Icode_CLOSURE_STMT:     return "CLOSURE_STMT";
+          case Icode_CALLSPECIAL:      return "CALLSPECIAL";
+          case Icode_RETUNDEF:         return "RETUNDEF";
+          case Icode_GOSUB:            return "GOSUB";
+          case Icode_STARTSUB:         return "STARTSUB";
+          case Icode_RETSUB:           return "RETSUB";
+          case Icode_LINE:             return "LINE";
+          case Icode_SHORTNUMBER:      return "SHORTNUMBER";
+          case Icode_INTNUMBER:        return "INTNUMBER";
+          case Icode_LITERAL_NEW:      return "LITERAL_NEW";
+          case Icode_LITERAL_SET:      return "LITERAL_SET";
+          case Icode_SPARE_ARRAYLIT:   return "SPARE_ARRAYLIT";
+          case Icode_REG_IND_C0:       return "REG_IND_C0";
+          case Icode_REG_IND_C1:       return "REG_IND_C1";
+          case Icode_REG_IND_C2:       return "REG_IND_C2";
+          case Icode_REG_IND_C3:       return "REG_IND_C3";
+          case Icode_REG_IND_C4:       return "REG_IND_C4";
+          case Icode_REG_IND_C5:       return "REG_IND_C5";
+          case Icode_REG_IND1:         return "LOAD_IND1";
+          case Icode_REG_IND2:         return "LOAD_IND2";
+          case Icode_REG_IND4:         return "LOAD_IND4";
+          case Icode_REG_STR_C0:       return "REG_STR_C0";
+          case Icode_REG_STR_C1:       return "REG_STR_C1";
+          case Icode_REG_STR_C2:       return "REG_STR_C2";
+          case Icode_REG_STR_C3:       return "REG_STR_C3";
+          case Icode_REG_STR1:         return "LOAD_STR1";
+          case Icode_REG_STR2:         return "LOAD_STR2";
+          case Icode_REG_STR4:         return "LOAD_STR4";
+          case Icode_GETVAR1:          return "GETVAR1";
+          case Icode_SETVAR1:          return "SETVAR1";
+          case Icode_UNDEF:            return "UNDEF";
+          case Icode_ZERO:             return "ZERO";
+          case Icode_ONE:              return "ONE";
+          case Icode_ENTERDQ:          return "ENTERDQ";
+          case Icode_LEAVEDQ:          return "LEAVEDQ";
+          case Icode_TAIL_CALL:        return "TAIL_CALL";
+          case Icode_LOCAL_CLEAR:      return "LOCAL_CLEAR";
+          case Icode_LITERAL_GETTER:   return "LITERAL_GETTER";
+          case Icode_LITERAL_SETTER:   return "LITERAL_SETTER";
+          case Icode_SETCONST:         return "SETCONST";
+          case Icode_SETCONSTVAR:      return "SETCONSTVAR";
+          case Icode_SETCONSTVAR1:     return "SETCONSTVAR1";
+          case Icode_GENERATOR:        return "GENERATOR";
+          case Icode_GENERATOR_END:    return "GENERATOR_END";
+          case Icode_DEBUGGER:         return "DEBUGGER";
+        }
+
+        // icode without name
+        throw new IllegalStateException(String.valueOf(bytecode));
+    }
+
+    private static boolean validIcode(int icode)
+    {
+        return MIN_ICODE <= icode && icode <= -1;
+    }
+
+    private static boolean validTokenCode(int token)
+    {
+        return Token.FIRST_BYTECODE_TOKEN <= token
+               && token <= Token.LAST_BYTECODE_TOKEN;
+    }
+
+    private static boolean validBytecode(int bytecode)
+    {
+        return validIcode(bytecode) || validTokenCode(bytecode);
+    }
+
+    public Object compile(CompilerEnvirons compilerEnv,
+                          ScriptOrFnNode tree,
+                          String encodedSource,
+                          boolean returnFunction)
+    {
+        this.compilerEnv = compilerEnv;
+        new NodeTransformer().transform(tree);
+
+        if (Token.printTrees) {
+            /*APPJET*///System.out.println(tree.toStringTree(tree));
+        }
+
+        if (returnFunction) {
+            tree = tree.getFunctionNode(0);
+        }
+
+        scriptOrFn = tree;
+        itsData = new InterpreterData(compilerEnv.getLanguageVersion(),
+                                      scriptOrFn.getSourceName(),
+                                      encodedSource);
+        itsData.topLevel = true;
+
+        if (returnFunction) {
+            generateFunctionICode();
+        } else {
+            generateICodeFromTree(scriptOrFn);
+        }
+
+        return itsData;
+    }
+
+    public Script createScriptObject(Object bytecode, Object staticSecurityDomain)
+    {
+        if(bytecode != itsData)
+        {
+            Kit.codeBug();
+        }
+        return InterpretedFunction.createScript(itsData,
+                                                staticSecurityDomain);
+    }
+
+    public void setEvalScriptFlag(Script script) {
+        ((InterpretedFunction)script).idata.evalScriptFlag = true;
+    }
+    
+
+    public Function createFunctionObject(Context cx, Scriptable scope,
+            Object bytecode, Object staticSecurityDomain)
+    {
+        if(bytecode != itsData)
+        {
+            Kit.codeBug();
+        }
+        return InterpretedFunction.createFunction(cx, scope, itsData,
+                                                  staticSecurityDomain);
+    }
+
+    private void generateFunctionICode()
+    {
+        itsInFunctionFlag = true;
+
+        FunctionNode theFunction = (FunctionNode)scriptOrFn;
+
+        itsData.itsFunctionType = theFunction.getFunctionType();
+        itsData.itsNeedsActivation = theFunction.requiresActivation();
+        itsData.itsName = theFunction.getFunctionName();
+        if (!theFunction.getIgnoreDynamicScope()) {
+            if (compilerEnv.isUseDynamicScope()) {
+                itsData.useDynamicScope = true;
+            }
+        }
+        if (theFunction.isGenerator()) {
+          addIcode(Icode_GENERATOR);
+          addUint16(theFunction.getBaseLineno() & 0xFFFF);
+        }
+
+        generateICodeFromTree(theFunction.getLastChild());
+    }
+
+    private void generateICodeFromTree(Node tree)
+    {
+        generateNestedFunctions();
+
+        generateRegExpLiterals();
+
+        visitStatement(tree, 0);
+        fixLabelGotos();
+        // add RETURN_RESULT only to scripts as function always ends with RETURN
+        if (itsData.itsFunctionType == 0) {
+            addToken(Token.RETURN_RESULT);
+        }
+
+        if (itsData.itsICode.length != itsICodeTop) {
+            // Make itsData.itsICode length exactly itsICodeTop to save memory
+            // and catch bugs with jumps beyond icode as early as possible
+            byte[] tmp = new byte[itsICodeTop];
+            System.arraycopy(itsData.itsICode, 0, tmp, 0, itsICodeTop);
+            itsData.itsICode = tmp;
+        }
+        if (itsStrings.size() == 0) {
+            itsData.itsStringTable = null;
+        } else {
+            itsData.itsStringTable = new String[itsStrings.size()];
+            ObjToIntMap.Iterator iter = itsStrings.newIterator();
+            for (iter.start(); !iter.done(); iter.next()) {
+                String str = (String)iter.getKey();
+                int index = iter.getValue();
+                if (itsData.itsStringTable[index] != null) Kit.codeBug();
+                itsData.itsStringTable[index] = str;
+            }
+        }
+        if (itsDoubleTableTop == 0) {
+            itsData.itsDoubleTable = null;
+        } else if (itsData.itsDoubleTable.length != itsDoubleTableTop) {
+            double[] tmp = new double[itsDoubleTableTop];
+            System.arraycopy(itsData.itsDoubleTable, 0, tmp, 0,
+                             itsDoubleTableTop);
+            itsData.itsDoubleTable = tmp;
+        }
+        if (itsExceptionTableTop != 0
+            && itsData.itsExceptionTable.length != itsExceptionTableTop)
+        {
+            int[] tmp = new int[itsExceptionTableTop];
+            System.arraycopy(itsData.itsExceptionTable, 0, tmp, 0,
+                             itsExceptionTableTop);
+            itsData.itsExceptionTable = tmp;
+        }
+
+        itsData.itsMaxVars = scriptOrFn.getParamAndVarCount();
+        // itsMaxFrameArray: interpret method needs this amount for its
+        // stack and sDbl arrays
+        itsData.itsMaxFrameArray = itsData.itsMaxVars
+                                   + itsData.itsMaxLocals
+                                   + itsData.itsMaxStack;
+
+        itsData.argNames = scriptOrFn.getParamAndVarNames();
+        itsData.argIsConst = scriptOrFn.getParamAndVarConst();
+        itsData.argCount = scriptOrFn.getParamCount();
+
+        itsData.encodedSourceStart = scriptOrFn.getEncodedSourceStart();
+        itsData.encodedSourceEnd = scriptOrFn.getEncodedSourceEnd();
+
+        if (itsLiteralIds.size() != 0) {
+            itsData.literalIds = itsLiteralIds.toArray();
+        }
+
+        if (Token.printICode) dumpICode(itsData);
+    }
+
+    private void generateNestedFunctions()
+    {
+        int functionCount = scriptOrFn.getFunctionCount();
+        if (functionCount == 0) return;
+
+        InterpreterData[] array = new InterpreterData[functionCount];
+        for (int i = 0; i != functionCount; i++) {
+            FunctionNode def = scriptOrFn.getFunctionNode(i);
+            Interpreter jsi = new Interpreter();
+            jsi.compilerEnv = compilerEnv;
+            jsi.scriptOrFn = def;
+            jsi.itsData = new InterpreterData(itsData);
+            jsi.generateFunctionICode();
+            array[i] = jsi.itsData;
+        }
+        itsData.itsNestedFunctions = array;
+    }
+
+    private void generateRegExpLiterals()
+    {
+        int N = scriptOrFn.getRegexpCount();
+        if (N == 0) return;
+
+        Context cx = Context.getContext();
+        RegExpProxy rep = ScriptRuntime.checkRegExpProxy(cx);
+        Object[] array = new Object[N];
+        for (int i = 0; i != N; i++) {
+            String string = scriptOrFn.getRegexpString(i);
+            String flags = scriptOrFn.getRegexpFlags(i);
+            array[i] = rep.compileRegExp(cx, string, flags);
+        }
+        itsData.itsRegExpLiterals = array;
+    }
+
+    private void updateLineNumber(Node node)
+    {
+        int lineno = node.getLineno();
+        if (lineno != itsLineNumber && lineno >= 0) {
+            if (itsData.firstLinePC < 0) {
+                itsData.firstLinePC = lineno;
+            }
+            itsLineNumber = lineno;
+            addIcode(Icode_LINE);
+            addUint16(lineno & 0xFFFF);
+        }
+    }
+
+    private RuntimeException badTree(Node node)
+    {
+        throw new RuntimeException(node.toString());
+    }
+
+    private void visitStatement(Node node, int initialStackDepth)
+    {
+        int type = node.getType();
+        Node child = node.getFirstChild();
+        switch (type) {
+
+          case Token.FUNCTION:
+            {
+                int fnIndex = node.getExistingIntProp(Node.FUNCTION_PROP);
+                int fnType = scriptOrFn.getFunctionNode(fnIndex).
+                                 getFunctionType();
+                // Only function expressions or function expression
+                // statements need closure code creating new function
+                // object on stack as function statements are initialized
+                // at script/function start.
+                // In addition, function expressions can not be present here
+                // at statement level, they must only be present as expressions.
+                if (fnType == FunctionNode.FUNCTION_EXPRESSION_STATEMENT) {
+                    addIndexOp(Icode_CLOSURE_STMT, fnIndex);
+                } else {
+                    if (fnType != FunctionNode.FUNCTION_STATEMENT) {
+                        throw Kit.codeBug();
+                    }
+                }
+                // For function statements or function expression statements
+                // in scripts, we need to ensure that the result of the script
+                // is the function if it is the last statement in the script.
+                // For example, eval("function () {}") should return a
+                // function, not undefined.
+                if (!itsInFunctionFlag) {
+                    addIndexOp(Icode_CLOSURE_EXPR, fnIndex);
+                    stackChange(1);
+                    addIcode(Icode_POP_RESULT);
+                    stackChange(-1);
+                }
+            }
+            break;
+
+          case Token.LABEL:
+          case Token.LOOP:
+          case Token.BLOCK:
+          case Token.EMPTY:
+          case Token.WITH:
+            updateLineNumber(node);
+          case Token.SCRIPT:
+            // fall through
+            while (child != null) {
+                visitStatement(child, initialStackDepth);
+                child = child.getNext();
+            }
+            break;
+
+          case Token.ENTERWITH:
+            visitExpression(child, 0);
+            addToken(Token.ENTERWITH);
+            stackChange(-1);
+            break;
+
+          case Token.LEAVEWITH:
+            addToken(Token.LEAVEWITH);
+            break;
+
+          case Token.LOCAL_BLOCK:
+            {
+                int local = allocLocal();
+                node.putIntProp(Node.LOCAL_PROP, local);
+                updateLineNumber(node);
+                while (child != null) {
+                    visitStatement(child, initialStackDepth);
+                    child = child.getNext();
+                }
+                addIndexOp(Icode_LOCAL_CLEAR, local);
+                releaseLocal(local);
+            }
+            break;
+
+          case Token.DEBUGGER:
+            addIcode(Icode_DEBUGGER);
+            break;
+
+          case Token.SWITCH:
+            updateLineNumber(node);
+            // See comments in IRFactory.createSwitch() for description
+            // of SWITCH node
+            {
+                visitExpression(child, 0);
+                for (Node.Jump caseNode = (Node.Jump)child.getNext();
+                     caseNode != null;
+                     caseNode = (Node.Jump)caseNode.getNext())
+                {
+                    if (caseNode.getType() != Token.CASE)
+                        throw badTree(caseNode);
+                    Node test = caseNode.getFirstChild();
+                    addIcode(Icode_DUP);
+                    stackChange(1);
+                    visitExpression(test, 0);
+                    addToken(Token.SHEQ);
+                    stackChange(-1);
+                    // If true, Icode_IFEQ_POP will jump and remove case
+                    // value from stack
+                    addGoto(caseNode.target, Icode_IFEQ_POP);
+                    stackChange(-1);
+                }
+                addIcode(Icode_POP);
+                stackChange(-1);
+            }
+            break;
+
+          case Token.TARGET:
+            markTargetLabel(node);
+            break;
+
+          case Token.IFEQ :
+          case Token.IFNE :
+            {
+                Node target = ((Node.Jump)node).target;
+                visitExpression(child, 0);
+                addGoto(target, type);
+                stackChange(-1);
+            }
+            break;
+
+          case Token.GOTO:
+            {
+                Node target = ((Node.Jump)node).target;
+                addGoto(target, type);
+            }
+            break;
+
+          case Token.JSR:
+            {
+                Node target = ((Node.Jump)node).target;
+                addGoto(target, Icode_GOSUB);
+            }
+            break;
+
+          case Token.FINALLY:
+            {
+                // Account for incomming GOTOSUB address
+                stackChange(1);
+                int finallyRegister = getLocalBlockRef(node);
+                addIndexOp(Icode_STARTSUB, finallyRegister);
+                stackChange(-1);
+                while (child != null) {
+                    visitStatement(child, initialStackDepth);
+                    child = child.getNext();
+                }
+                addIndexOp(Icode_RETSUB, finallyRegister);
+            }
+            break;
+
+          case Token.EXPR_VOID:
+          case Token.EXPR_RESULT:
+            updateLineNumber(node);
+            visitExpression(child, 0);
+            addIcode((type == Token.EXPR_VOID) ? Icode_POP : Icode_POP_RESULT);
+            stackChange(-1);
+            break;
+
+          case Token.TRY:
+            {
+                Node.Jump tryNode = (Node.Jump)node;
+                int exceptionObjectLocal = getLocalBlockRef(tryNode);
+                int scopeLocal = allocLocal();
+
+                addIndexOp(Icode_SCOPE_SAVE, scopeLocal);
+
+                int tryStart = itsICodeTop;
+                boolean savedFlag = itsInTryFlag;
+                itsInTryFlag = true;
+                while (child != null) {
+                    visitStatement(child, initialStackDepth);
+                    child = child.getNext();
+                }
+                itsInTryFlag = savedFlag;
+
+                Node catchTarget = tryNode.target;
+                if (catchTarget != null) {
+                    int catchStartPC
+                        = itsLabelTable[getTargetLabel(catchTarget)];
+                    addExceptionHandler(
+                        tryStart, catchStartPC, catchStartPC,
+                        false, exceptionObjectLocal, scopeLocal);
+                }
+                Node finallyTarget = tryNode.getFinally();
+                if (finallyTarget != null) {
+                    int finallyStartPC
+                        = itsLabelTable[getTargetLabel(finallyTarget)];
+                    addExceptionHandler(
+                        tryStart, finallyStartPC, finallyStartPC,
+                        true, exceptionObjectLocal, scopeLocal);
+                }
+
+                addIndexOp(Icode_LOCAL_CLEAR, scopeLocal);
+                releaseLocal(scopeLocal);
+            }
+            break;
+
+          case Token.CATCH_SCOPE:
+            {
+                int localIndex = getLocalBlockRef(node);
+                int scopeIndex = node.getExistingIntProp(Node.CATCH_SCOPE_PROP);
+                String name = child.getString();
+                child = child.getNext();
+                visitExpression(child, 0); // load expression object
+                addStringPrefix(name);
+                addIndexPrefix(localIndex);
+                addToken(Token.CATCH_SCOPE);
+                addUint8(scopeIndex != 0 ? 1 : 0);
+                stackChange(-1);
+            }
+            break;
+
+          case Token.THROW:
+            updateLineNumber(node);
+            visitExpression(child, 0);
+            addToken(Token.THROW);
+            addUint16(itsLineNumber & 0xFFFF);
+            stackChange(-1);
+            break;
+
+          case Token.RETHROW:
+            updateLineNumber(node);
+            addIndexOp(Token.RETHROW, getLocalBlockRef(node));
+            break;
+
+          case Token.RETURN:
+            updateLineNumber(node);
+            if (node.getIntProp(Node.GENERATOR_END_PROP, 0) != 0) {
+                // We're in a generator, so change RETURN to GENERATOR_END
+                addIcode(Icode_GENERATOR_END);
+                addUint16(itsLineNumber & 0xFFFF);
+            } else if (child != null) {
+                visitExpression(child, ECF_TAIL);
+                addToken(Token.RETURN);
+                stackChange(-1);
+            } else {
+                addIcode(Icode_RETUNDEF);
+            }
+            break;
+
+          case Token.RETURN_RESULT:
+            updateLineNumber(node);
+            addToken(Token.RETURN_RESULT);
+            break;
+
+          case Token.ENUM_INIT_KEYS:
+          case Token.ENUM_INIT_VALUES:
+          case Token.ENUM_INIT_ARRAY:
+            visitExpression(child, 0);
+            addIndexOp(type, getLocalBlockRef(node));
+            stackChange(-1);
+            break;
+
+          case Icode_GENERATOR:
+            break;
+
+          default:
+            throw badTree(node);
+        }
+
+        if (itsStackDepth != initialStackDepth) {
+            throw Kit.codeBug();
+        }
+    }
+
+    private void visitExpression(Node node, int contextFlags)
+    {
+        int type = node.getType();
+        Node child = node.getFirstChild();
+        int savedStackDepth = itsStackDepth;
+        switch (type) {
+
+          case Token.FUNCTION:
+            {
+                int fnIndex = node.getExistingIntProp(Node.FUNCTION_PROP);
+                FunctionNode fn = scriptOrFn.getFunctionNode(fnIndex);
+                // See comments in visitStatement for Token.FUNCTION case
+                if (fn.getFunctionType() != FunctionNode.FUNCTION_EXPRESSION) {
+                    throw Kit.codeBug();
+                }
+                addIndexOp(Icode_CLOSURE_EXPR, fnIndex);
+                stackChange(1);
+            }
+            break;
+
+          case Token.LOCAL_LOAD:
+            {
+                int localIndex = getLocalBlockRef(node);
+                addIndexOp(Token.LOCAL_LOAD, localIndex);
+                stackChange(1);
+            }
+            break;
+
+          case Token.COMMA:
+            {
+                Node lastChild = node.getLastChild();
+                while (child != lastChild) {
+                    visitExpression(child, 0);
+                    addIcode(Icode_POP);
+                    stackChange(-1);
+                    child = child.getNext();
+                }
+                // Preserve tail context flag if any
+                visitExpression(child, contextFlags & ECF_TAIL);
+            }
+            break;
+
+          case Token.USE_STACK:
+            // Indicates that stack was modified externally,
+            // like placed catch object
+            stackChange(1);
+            break;
+
+          case Token.REF_CALL:
+          case Token.CALL:
+          case Token.NEW:
+            {
+                if (type == Token.NEW) {
+                    visitExpression(child, 0);
+                } else {
+                    generateCallFunAndThis(child);
+                }
+                int argCount = 0;
+                while ((child = child.getNext()) != null) {
+                    visitExpression(child, 0);
+                    ++argCount;
+                }
+                int callType = node.getIntProp(Node.SPECIALCALL_PROP,
+                                               Node.NON_SPECIALCALL);
+                if (callType != Node.NON_SPECIALCALL) {
+                    // embed line number and source filename
+                    addIndexOp(Icode_CALLSPECIAL, argCount);
+                    addUint8(callType);
+                    addUint8(type == Token.NEW ? 1 : 0);
+                    addUint16(itsLineNumber & 0xFFFF);
+                } else {
+                    // Only use the tail call optimization if we're not in a try
+                    // or we're not generating debug info (since the
+                    // optimization will confuse the debugger)
+                    if (type == Token.CALL && (contextFlags & ECF_TAIL) != 0 &&
+                        !compilerEnv.isGenerateDebugInfo() && !itsInTryFlag)
+                    {
+                        type = Icode_TAIL_CALL;
+                    }
+                    addIndexOp(type, argCount);
+                }
+                // adjust stack
+                if (type == Token.NEW) {
+                    // new: f, args -> result
+                    stackChange(-argCount);
+                } else {
+                    // call: f, thisObj, args -> result
+                    // ref_call: f, thisObj, args -> ref
+                    stackChange(-1 - argCount);
+                }
+                if (argCount > itsData.itsMaxCalleeArgs) {
+                    itsData.itsMaxCalleeArgs = argCount;
+                }
+            }
+            break;
+
+          case Token.AND:
+          case Token.OR:
+            {
+                visitExpression(child, 0);
+                addIcode(Icode_DUP);
+                stackChange(1);
+                int afterSecondJumpStart = itsICodeTop;
+                int jump = (type == Token.AND) ? Token.IFNE : Token.IFEQ;
+                addGotoOp(jump);
+                stackChange(-1);
+                addIcode(Icode_POP);
+                stackChange(-1);
+                child = child.getNext();
+                // Preserve tail context flag if any
+                visitExpression(child, contextFlags & ECF_TAIL);
+                resolveForwardGoto(afterSecondJumpStart);
+            }
+            break;
+
+          case Token.HOOK:
+            {
+                Node ifThen = child.getNext();
+                Node ifElse = ifThen.getNext();
+                visitExpression(child, 0);
+                int elseJumpStart = itsICodeTop;
+                addGotoOp(Token.IFNE);
+                stackChange(-1);
+                // Preserve tail context flag if any
+                visitExpression(ifThen, contextFlags & ECF_TAIL);
+                int afterElseJumpStart = itsICodeTop;
+                addGotoOp(Token.GOTO);
+                resolveForwardGoto(elseJumpStart);
+                itsStackDepth = savedStackDepth;
+                // Preserve tail context flag if any
+                visitExpression(ifElse, contextFlags & ECF_TAIL);
+                resolveForwardGoto(afterElseJumpStart);
+            }
+            break;
+
+          case Token.GETPROP:
+          case Token.GETPROPNOWARN:
+            visitExpression(child, 0);
+            child = child.getNext();
+            addStringOp(type, child.getString());
+            break;
+
+          case Token.GETELEM:
+          case Token.DELPROP:
+          case Token.BITAND:
+          case Token.BITOR:
+          case Token.BITXOR:
+          case Token.LSH:
+          case Token.RSH:
+          case Token.URSH:
+          case Token.ADD:
+          case Token.SUB:
+          case Token.MOD:
+          case Token.DIV:
+          case Token.MUL:
+          case Token.EQ:
+          case Token.NE:
+          case Token.SHEQ:
+          case Token.SHNE:
+          case Token.IN:
+          case Token.INSTANCEOF:
+          case Token.LE:
+          case Token.LT:
+          case Token.GE:
+          case Token.GT:
+            visitExpression(child, 0);
+            child = child.getNext();
+            visitExpression(child, 0);
+            addToken(type);
+            stackChange(-1);
+            break;
+
+          case Token.POS:
+          case Token.NEG:
+          case Token.NOT:
+          case Token.BITNOT:
+          case Token.TYPEOF:
+          case Token.VOID:
+            visitExpression(child, 0);
+            if (type == Token.VOID) {
+                addIcode(Icode_POP);
+                addIcode(Icode_UNDEF);
+            } else {
+                addToken(type);
+            }
+            break;
+
+          case Token.GET_REF:
+          case Token.DEL_REF:
+            visitExpression(child, 0);
+            addToken(type);
+            break;
+
+          case Token.SETPROP:
+          case Token.SETPROP_OP:
+            {
+                visitExpression(child, 0);
+                child = child.getNext();
+                String property = child.getString();
+                child = child.getNext();
+                if (type == Token.SETPROP_OP) {
+                    addIcode(Icode_DUP);
+                    stackChange(1);
+                    addStringOp(Token.GETPROP, property);
+                    // Compensate for the following USE_STACK
+                    stackChange(-1);
+                }
+                visitExpression(child, 0);
+                addStringOp(Token.SETPROP, property);
+                stackChange(-1);
+            }
+            break;
+
+          case Token.SETELEM:
+          case Token.SETELEM_OP:
+            visitExpression(child, 0);
+            child = child.getNext();
+            visitExpression(child, 0);
+            child = child.getNext();
+            if (type == Token.SETELEM_OP) {
+                addIcode(Icode_DUP2);
+                stackChange(2);
+                addToken(Token.GETELEM);
+                stackChange(-1);
+                // Compensate for the following USE_STACK
+                stackChange(-1);
+            }
+            visitExpression(child, 0);
+            addToken(Token.SETELEM);
+            stackChange(-2);
+            break;
+
+          case Token.SET_REF:
+          case Token.SET_REF_OP:
+            visitExpression(child, 0);
+            child = child.getNext();
+            if (type == Token.SET_REF_OP) {
+                addIcode(Icode_DUP);
+                stackChange(1);
+                addToken(Token.GET_REF);
+                // Compensate for the following USE_STACK
+                stackChange(-1);
+            }
+            visitExpression(child, 0);
+            addToken(Token.SET_REF);
+            stackChange(-1);
+            break;
+
+          case Token.SETNAME:
+            {
+                String name = child.getString();
+                visitExpression(child, 0);
+                child = child.getNext();
+                visitExpression(child, 0);
+                addStringOp(Token.SETNAME, name);
+                stackChange(-1);
+            }
+            break;
+
+          case Token.SETCONST:
+            {
+                String name = child.getString();
+                visitExpression(child, 0);
+                child = child.getNext();
+                visitExpression(child, 0);
+                addStringOp(Icode_SETCONST, name);
+                stackChange(-1);
+            }
+            break;
+
+          case Token.TYPEOFNAME:
+            {
+                int index = -1;
+                // use typeofname if an activation frame exists
+                // since the vars all exist there instead of in jregs
+                if (itsInFunctionFlag && !itsData.itsNeedsActivation)
+                    index = scriptOrFn.getIndexForNameNode(node);
+                if (index == -1) {
+                    addStringOp(Icode_TYPEOFNAME, node.getString());
+                    stackChange(1);
+                } else {
+                    addVarOp(Token.GETVAR, index);
+                    stackChange(1);
+                    addToken(Token.TYPEOF);
+                }
+            }
+            break;
+
+          case Token.BINDNAME:
+          case Token.NAME:
+          case Token.STRING:
+            addStringOp(type, node.getString());
+            stackChange(1);
+            break;
+
+          case Token.INC:
+          case Token.DEC:
+            visitIncDec(node, child);
+            break;
+
+          case Token.NUMBER:
+            {
+                double num = node.getDouble();
+                int inum = (int)num;
+                if (inum == num) {
+                    if (inum == 0) {
+                        addIcode(Icode_ZERO);
+                        // Check for negative zero
+                        if (1.0 / num < 0.0) {
+                            addToken(Token.NEG);
+                        }
+                    } else if (inum == 1) {
+                        addIcode(Icode_ONE);
+                    } else if ((short)inum == inum) {
+                        addIcode(Icode_SHORTNUMBER);
+                        // write short as uin16 bit pattern
+                        addUint16(inum & 0xFFFF);
+                    } else {
+                        addIcode(Icode_INTNUMBER);
+                        addInt(inum);
+                    }
+                } else {
+                    int index = getDoubleIndex(num);
+                    addIndexOp(Token.NUMBER, index);
+                }
+                stackChange(1);
+            }
+            break;
+
+          case Token.GETVAR:
+            {
+                if (itsData.itsNeedsActivation) Kit.codeBug();
+                int index = scriptOrFn.getIndexForNameNode(node);
+                addVarOp(Token.GETVAR, index);
+                stackChange(1);
+            }
+            break;
+
+          case Token.SETVAR:
+            {
+                if (itsData.itsNeedsActivation) Kit.codeBug();
+                int index = scriptOrFn.getIndexForNameNode(child);
+                child = child.getNext();
+                visitExpression(child, 0);
+                addVarOp(Token.SETVAR, index);
+            }
+            break;
+
+          case Token.SETCONSTVAR:
+            {
+                if (itsData.itsNeedsActivation) Kit.codeBug();
+                int index = scriptOrFn.getIndexForNameNode(child);
+                child = child.getNext();
+                visitExpression(child, 0);
+                addVarOp(Token.SETCONSTVAR, index);
+            }
+            break;
+
+          case Token.NULL:
+          case Token.THIS:
+          case Token.THISFN:
+          case Token.FALSE:
+          case Token.TRUE:
+            addToken(type);
+            stackChange(1);
+            break;
+
+          case Token.ENUM_NEXT:
+          case Token.ENUM_ID:
+            addIndexOp(type, getLocalBlockRef(node));
+            stackChange(1);
+            break;
+
+          case Token.REGEXP:
+            {
+                int index = node.getExistingIntProp(Node.REGEXP_PROP);
+                addIndexOp(Token.REGEXP, index);
+                stackChange(1);
+            }
+            break;
+
+          case Token.ARRAYLIT:
+          case Token.OBJECTLIT:
+            visitLiteral(node, child);
+            break;
+
+          case Token.ARRAYCOMP:
+            visitArrayComprehension(node, child, child.getNext());
+            break;
+
+          case Token.REF_SPECIAL:
+            visitExpression(child, 0);
+            addStringOp(type, (String)node.getProp(Node.NAME_PROP));
+            break;
+
+          case Token.REF_MEMBER:
+          case Token.REF_NS_MEMBER:
+          case Token.REF_NAME:
+          case Token.REF_NS_NAME:
+            {
+                int memberTypeFlags = node.getIntProp(Node.MEMBER_TYPE_PROP, 0);
+                // generate possible target, possible namespace and member
+                int childCount = 0;
+                do {
+                    visitExpression(child, 0);
+                    ++childCount;
+                    child = child.getNext();
+                } while (child != null);
+                addIndexOp(type, memberTypeFlags);
+                stackChange(1 - childCount);
+            }
+            break;
+
+          case Token.DOTQUERY:
+            {
+                int queryPC;
+                updateLineNumber(node);
+                visitExpression(child, 0);
+                addIcode(Icode_ENTERDQ);
+                stackChange(-1);
+                queryPC = itsICodeTop;
+                visitExpression(child.getNext(), 0);
+                addBackwardGoto(Icode_LEAVEDQ, queryPC);
+            }
+            break;
+
+          case Token.DEFAULTNAMESPACE :
+          case Token.ESCXMLATTR :
+          case Token.ESCXMLTEXT :
+            visitExpression(child, 0);
+            addToken(type);
+            break;
+
+          case Token.YIELD:
+            if (child != null) {
+                visitExpression(child, 0);
+            } else {
+                addIcode(Icode_UNDEF);
+                stackChange(1);
+            }
+            addToken(Token.YIELD);
+            addUint16(node.getLineno() & 0xFFFF);
+            break;
+
+          case Token.WITHEXPR: {
+            Node enterWith = node.getFirstChild();
+            Node with = enterWith.getNext();
+            visitExpression(enterWith.getFirstChild(), 0);
+            addToken(Token.ENTERWITH);
+            stackChange(-1);
+            visitExpression(with.getFirstChild(), 0);
+            addToken(Token.LEAVEWITH);
+            break;
+          }
+
+          default:
+            throw badTree(node);
+        }
+        if (savedStackDepth + 1 != itsStackDepth) {
+            Kit.codeBug();
+        }
+    }
+
+    private void generateCallFunAndThis(Node left)
+    {
+        // Generate code to place on stack function and thisObj
+        int type = left.getType();
+        switch (type) {
+          case Token.NAME: {
+            String name = left.getString();
+            // stack: ... -> ... function thisObj
+            addStringOp(Icode_NAME_AND_THIS, name);
+            stackChange(2);
+            break;
+          }
+          case Token.GETPROP:
+          case Token.GETELEM: {
+            Node target = left.getFirstChild();
+            visitExpression(target, 0);
+            Node id = target.getNext();
+            if (type == Token.GETPROP) {
+                String property = id.getString();
+                // stack: ... target -> ... function thisObj
+                addStringOp(Icode_PROP_AND_THIS, property);
+                stackChange(1);
+            } else {
+                visitExpression(id, 0);
+                // stack: ... target id -> ... function thisObj
+                addIcode(Icode_ELEM_AND_THIS);
+            }
+            break;
+          }
+          default:
+            // Including Token.GETVAR
+            visitExpression(left, 0);
+            // stack: ... value -> ... function thisObj
+            addIcode(Icode_VALUE_AND_THIS);
+            stackChange(1);
+            break;
+        }
+    }
+
+    private void visitIncDec(Node node, Node child)
+    {
+        int incrDecrMask = node.getExistingIntProp(Node.INCRDECR_PROP);
+        int childType = child.getType();
+        switch (childType) {
+          case Token.GETVAR : {
+            if (itsData.itsNeedsActivation) Kit.codeBug();
+            int i = scriptOrFn.getIndexForNameNode(child);
+            addVarOp(Icode_VAR_INC_DEC, i);
+            addUint8(incrDecrMask);
+            stackChange(1);
+            break;
+          }
+          case Token.NAME : {
+            String name = child.getString();
+            addStringOp(Icode_NAME_INC_DEC, name);
+            addUint8(incrDecrMask);
+            stackChange(1);
+            break;
+          }
+          case Token.GETPROP : {
+            Node object = child.getFirstChild();
+            visitExpression(object, 0);
+            String property = object.getNext().getString();
+            addStringOp(Icode_PROP_INC_DEC, property);
+            addUint8(incrDecrMask);
+            break;
+          }
+          case Token.GETELEM : {
+            Node object = child.getFirstChild();
+            visitExpression(object, 0);
+            Node index = object.getNext();
+            visitExpression(index, 0);
+            addIcode(Icode_ELEM_INC_DEC);
+            addUint8(incrDecrMask);
+            stackChange(-1);
+            break;
+          }
+          case Token.GET_REF : {
+            Node ref = child.getFirstChild();
+            visitExpression(ref, 0);
+            addIcode(Icode_REF_INC_DEC);
+            addUint8(incrDecrMask);
+            break;
+          }
+          default : {
+            throw badTree(node);
+          }
+        }
+    }
+
+    private void visitLiteral(Node node, Node child)
+    {
+        int type = node.getType();
+        int count;
+        Object[] propertyIds = null;
+        if (type == Token.ARRAYLIT) {
+            count = 0;
+            for (Node n = child; n != null; n = n.getNext()) {
+                ++count;
+            }
+        } else if (type == Token.OBJECTLIT) {
+            propertyIds = (Object[])node.getProp(Node.OBJECT_IDS_PROP);
+            count = propertyIds.length;
+        } else {
+            throw badTree(node);
+        }
+        addIndexOp(Icode_LITERAL_NEW, count);
+        stackChange(2);
+        while (child != null) {
+            int childType = child.getType();
+            if (childType == Token.GET) {
+                visitExpression(child.getFirstChild(), 0);
+                addIcode(Icode_LITERAL_GETTER);
+            } else if (childType == Token.SET) {
+                visitExpression(child.getFirstChild(), 0);
+                addIcode(Icode_LITERAL_SETTER);
+            } else {
+                visitExpression(child, 0);
+                addIcode(Icode_LITERAL_SET);
+            }
+            stackChange(-1);
+            child = child.getNext();
+        }
+        if (type == Token.ARRAYLIT) {
+            int[] skipIndexes = (int[])node.getProp(Node.SKIP_INDEXES_PROP);
+            if (skipIndexes == null) {
+                addToken(Token.ARRAYLIT);
+            } else {
+                int index = itsLiteralIds.size();
+                itsLiteralIds.add(skipIndexes);
+                addIndexOp(Icode_SPARE_ARRAYLIT, index);
+            }
+        } else {
+            int index = itsLiteralIds.size();
+            itsLiteralIds.add(propertyIds);
+            addIndexOp(Token.OBJECTLIT, index);
+        }
+        stackChange(-1);
+    }
+    
+    private void visitArrayComprehension(Node node, Node initStmt, Node expr)
+    {
+        // A bit of a hack: array comprehensions are implemented using
+        // statement nodes for the iteration, yet they appear in an
+        // expression context. So we pass the current stack depth to
+        // visitStatement so it can check that the depth is not altered
+        // by statements.
+        visitStatement(initStmt, itsStackDepth);
+        visitExpression(expr, 0);
+    }
+
+    private int getLocalBlockRef(Node node)
+    {
+        Node localBlock = (Node)node.getProp(Node.LOCAL_BLOCK_PROP);
+        return localBlock.getExistingIntProp(Node.LOCAL_PROP);
+    }
+
+    private int getTargetLabel(Node target)
+    {
+        int label = target.labelId();
+        if (label != -1) {
+            return label;
+        }
+        label = itsLabelTableTop;
+        if (itsLabelTable == null || label == itsLabelTable.length) {
+            if (itsLabelTable == null) {
+                itsLabelTable = new int[MIN_LABEL_TABLE_SIZE];
+            }else {
+                int[] tmp = new int[itsLabelTable.length * 2];
+                System.arraycopy(itsLabelTable, 0, tmp, 0, label);
+                itsLabelTable = tmp;
+            }
+        }
+        itsLabelTableTop = label + 1;
+        itsLabelTable[label] = -1;
+
+        target.labelId(label);
+        return label;
+    }
+
+    private void markTargetLabel(Node target)
+    {
+        int label = getTargetLabel(target);
+        if (itsLabelTable[label] != -1) {
+            // Can mark label only once
+            Kit.codeBug();
+        }
+        itsLabelTable[label] = itsICodeTop;
+    }
+
+    private void addGoto(Node target, int gotoOp)
+    {
+        int label = getTargetLabel(target);
+        if (!(label < itsLabelTableTop)) Kit.codeBug();
+        int targetPC = itsLabelTable[label];
+
+        if (targetPC != -1) {
+            addBackwardGoto(gotoOp, targetPC);
+        } else {
+            int gotoPC = itsICodeTop;
+            addGotoOp(gotoOp);
+            int top = itsFixupTableTop;
+            if (itsFixupTable == null || top == itsFixupTable.length) {
+                if (itsFixupTable == null) {
+                    itsFixupTable = new long[MIN_FIXUP_TABLE_SIZE];
+                } else {
+                    long[] tmp = new long[itsFixupTable.length * 2];
+                    System.arraycopy(itsFixupTable, 0, tmp, 0, top);
+                    itsFixupTable = tmp;
+                }
+            }
+            itsFixupTableTop = top + 1;
+            itsFixupTable[top] = ((long)label << 32) | gotoPC;
+        }
+    }
+
+    private void fixLabelGotos()
+    {
+        for (int i = 0; i < itsFixupTableTop; i++) {
+            long fixup = itsFixupTable[i];
+            int label = (int)(fixup >> 32);
+            int jumpSource = (int)fixup;
+            int pc = itsLabelTable[label];
+            if (pc == -1) {
+                // Unlocated label
+                throw Kit.codeBug();
+            }
+            resolveGoto(jumpSource, pc);
+        }
+        itsFixupTableTop = 0;
+    }
+
+    private void addBackwardGoto(int gotoOp, int jumpPC)
+    {
+        int fromPC = itsICodeTop;
+        // Ensure that this is a jump backward
+        if (fromPC <= jumpPC) throw Kit.codeBug();
+        addGotoOp(gotoOp);
+        resolveGoto(fromPC, jumpPC);
+    }
+
+    private void resolveForwardGoto(int fromPC)
+    {
+        // Ensure that forward jump skips at least self bytecode
+        if (itsICodeTop < fromPC + 3) throw Kit.codeBug();
+        resolveGoto(fromPC, itsICodeTop);
+    }
+
+    private void resolveGoto(int fromPC, int jumpPC)
+    {
+        int offset = jumpPC - fromPC;
+        // Ensure that jumps do not overlap
+        if (0 <= offset && offset <= 2) throw Kit.codeBug();
+        int offsetSite = fromPC + 1;
+        if (offset != (short)offset) {
+            if (itsData.longJumps == null) {
+                itsData.longJumps = new UintMap();
+            }
+            itsData.longJumps.put(offsetSite, jumpPC);
+            offset = 0;
+        }
+        byte[] array = itsData.itsICode;
+        array[offsetSite] = (byte)(offset >> 8);
+        array[offsetSite + 1] = (byte)offset;
+    }
+
+    private void addToken(int token)
+    {
+        if (!validTokenCode(token)) throw Kit.codeBug();
+        addUint8(token);
+    }
+
+    private void addIcode(int icode)
+    {
+        if (!validIcode(icode)) throw Kit.codeBug();
+        // Write negative icode as uint8 bits
+        addUint8(icode & 0xFF);
+    }
+
+    private void addUint8(int value)
+    {
+        if ((value & ~0xFF) != 0) throw Kit.codeBug();
+        byte[] array = itsData.itsICode;
+        int top = itsICodeTop;
+        if (top == array.length) {
+            array = increaseICodeCapacity(1);
+        }
+        array[top] = (byte)value;
+        itsICodeTop = top + 1;
+    }
+
+    private void addUint16(int value)
+    {
+        if ((value & ~0xFFFF) != 0) throw Kit.codeBug();
+        byte[] array = itsData.itsICode;
+        int top = itsICodeTop;
+        if (top + 2 > array.length) {
+            array = increaseICodeCapacity(2);
+        }
+        array[top] = (byte)(value >>> 8);
+        array[top + 1] = (byte)value;
+        itsICodeTop = top + 2;
+    }
+
+    private void addInt(int i)
+    {
+        byte[] array = itsData.itsICode;
+        int top = itsICodeTop;
+        if (top + 4 > array.length) {
+            array = increaseICodeCapacity(4);
+        }
+        array[top] = (byte)(i >>> 24);
+        array[top + 1] = (byte)(i >>> 16);
+        array[top + 2] = (byte)(i >>> 8);
+        array[top + 3] = (byte)i;
+        itsICodeTop = top + 4;
+    }
+
+    private int getDoubleIndex(double num)
+    {
+        int index = itsDoubleTableTop;
+        if (index == 0) {
+            itsData.itsDoubleTable = new double[64];
+        } else if (itsData.itsDoubleTable.length == index) {
+            double[] na = new double[index * 2];
+            System.arraycopy(itsData.itsDoubleTable, 0, na, 0, index);
+            itsData.itsDoubleTable = na;
+        }
+        itsData.itsDoubleTable[index] = num;
+        itsDoubleTableTop = index + 1;
+        return index;
+    }
+
+    private void addGotoOp(int gotoOp)
+    {
+        byte[] array = itsData.itsICode;
+        int top = itsICodeTop;
+        if (top + 3 > array.length) {
+            array = increaseICodeCapacity(3);
+        }
+        array[top] = (byte)gotoOp;
+        // Offset would written later
+        itsICodeTop = top + 1 + 2;
+    }
+
+    private void addVarOp(int op, int varIndex)
+    {
+        switch (op) {
+          case Token.SETCONSTVAR:
+            if (varIndex < 128) {
+                addIcode(Icode_SETCONSTVAR1);
+                addUint8(varIndex);
+                return;
+            }
+            addIndexOp(Icode_SETCONSTVAR, varIndex);
+            return;
+          case Token.GETVAR:
+          case Token.SETVAR:
+            if (varIndex < 128) {
+                addIcode(op == Token.GETVAR ? Icode_GETVAR1 : Icode_SETVAR1);
+                addUint8(varIndex);
+                return;
+            }
+            // fallthrough
+          case Icode_VAR_INC_DEC:
+            addIndexOp(op, varIndex);
+            return;
+        }
+        throw Kit.codeBug();
+    }
+
+    private void addStringOp(int op, String str)
+    {
+        addStringPrefix(str);
+        if (validIcode(op)) {
+            addIcode(op);
+        } else {
+            addToken(op);
+        }
+    }
+
+    private void addIndexOp(int op, int index)
+    {
+        addIndexPrefix(index);
+        if (validIcode(op)) {
+            addIcode(op);
+        } else {
+            addToken(op);
+        }
+    }
+
+    private void addStringPrefix(String str)
+    {
+        int index = itsStrings.get(str, -1);
+        if (index == -1) {
+            index = itsStrings.size();
+            itsStrings.put(str, index);
+        }
+        if (index < 4) {
+            addIcode(Icode_REG_STR_C0 - index);
+        } else if (index <= 0xFF) {
+            addIcode(Icode_REG_STR1);
+            addUint8(index);
+         } else if (index <= 0xFFFF) {
+            addIcode(Icode_REG_STR2);
+            addUint16(index);
+         } else {
+            addIcode(Icode_REG_STR4);
+            addInt(index);
+        }
+    }
+
+    private void addIndexPrefix(int index)
+    {
+        if (index < 0) Kit.codeBug();
+        if (index < 6) {
+            addIcode(Icode_REG_IND_C0 - index);
+        } else if (index <= 0xFF) {
+            addIcode(Icode_REG_IND1);
+            addUint8(index);
+         } else if (index <= 0xFFFF) {
+            addIcode(Icode_REG_IND2);
+            addUint16(index);
+         } else {
+            addIcode(Icode_REG_IND4);
+            addInt(index);
+        }
+    }
+
+    private void addExceptionHandler(int icodeStart, int icodeEnd,
+                                     int handlerStart, boolean isFinally,
+                                     int exceptionObjectLocal, int scopeLocal)
+    {
+        int top = itsExceptionTableTop;
+        int[] table = itsData.itsExceptionTable;
+        if (table == null) {
+            if (top != 0) Kit.codeBug();
+            table = new int[EXCEPTION_SLOT_SIZE * 2];
+            itsData.itsExceptionTable = table;
+        } else if (table.length == top) {
+            table = new int[table.length * 2];
+            System.arraycopy(itsData.itsExceptionTable, 0, table, 0, top);
+            itsData.itsExceptionTable = table;
+        }
+        table[top + EXCEPTION_TRY_START_SLOT]  = icodeStart;
+        table[top + EXCEPTION_TRY_END_SLOT]    = icodeEnd;
+        table[top + EXCEPTION_HANDLER_SLOT]    = handlerStart;
+        table[top + EXCEPTION_TYPE_SLOT]       = isFinally ? 1 : 0;
+        table[top + EXCEPTION_LOCAL_SLOT]      = exceptionObjectLocal;
+        table[top + EXCEPTION_SCOPE_SLOT]      = scopeLocal;
+
+        itsExceptionTableTop = top + EXCEPTION_SLOT_SIZE;
+    }
+
+    private byte[] increaseICodeCapacity(int extraSize)
+    {
+        int capacity = itsData.itsICode.length;
+        int top = itsICodeTop;
+        if (top + extraSize <= capacity) throw Kit.codeBug();
+        capacity *= 2;
+        if (top + extraSize > capacity) {
+            capacity = top + extraSize;
+        }
+        byte[] array = new byte[capacity];
+        System.arraycopy(itsData.itsICode, 0, array, 0, top);
+        itsData.itsICode = array;
+        return array;
+    }
+
+    private void stackChange(int change)
+    {
+        if (change <= 0) {
+            itsStackDepth += change;
+        } else {
+            int newDepth = itsStackDepth + change;
+            if (newDepth > itsData.itsMaxStack) {
+                itsData.itsMaxStack = newDepth;
+            }
+            itsStackDepth = newDepth;
+        }
+    }
+
+    private int allocLocal()
+    {
+        int localSlot = itsLocalTop;
+        ++itsLocalTop;
+        if (itsLocalTop > itsData.itsMaxLocals) {
+            itsData.itsMaxLocals = itsLocalTop;
+        }
+        return localSlot;
+    }
+
+    private void releaseLocal(int localSlot)
+    {
+        --itsLocalTop;
+        if (localSlot != itsLocalTop) Kit.codeBug();
+    }
+
+    private static int getShort(byte[] iCode, int pc) {
+        return (iCode[pc] << 8) | (iCode[pc + 1] & 0xFF);
+    }
+
+    private static int getIndex(byte[] iCode, int pc) {
+        return ((iCode[pc] & 0xFF) << 8) | (iCode[pc + 1] & 0xFF);
+    }
+
+    private static int getInt(byte[] iCode, int pc) {
+        return (iCode[pc] << 24) | ((iCode[pc + 1] & 0xFF) << 16)
+               | ((iCode[pc + 2] & 0xFF) << 8) | (iCode[pc + 3] & 0xFF);
+    }
+
+    private static int getExceptionHandler(CallFrame frame,
+                                           boolean onlyFinally)
+    {
+        int[] exceptionTable = frame.idata.itsExceptionTable;
+        if (exceptionTable == null) {
+            // No exception handlers
+            return -1;
+        }
+
+        // Icode switch in the interpreter increments PC immediately
+        // and it is necessary to subtract 1 from the saved PC
+        // to point it before the start of the next instruction.
+        int pc = frame.pc - 1;
+
+        // OPT: use binary search
+        int best = -1, bestStart = 0, bestEnd = 0;
+        for (int i = 0; i != exceptionTable.length; i += EXCEPTION_SLOT_SIZE) {
+            int start = exceptionTable[i + EXCEPTION_TRY_START_SLOT];
+            int end = exceptionTable[i + EXCEPTION_TRY_END_SLOT];
+            if (!(start <= pc && pc < end)) {
+                continue;
+            }
+            if (onlyFinally && exceptionTable[i + EXCEPTION_TYPE_SLOT] != 1) {
+                continue;
+            }
+            if (best >= 0) {
+                // Since handlers always nest and they never have shared end
+                // although they can share start  it is sufficient to compare
+                // handlers ends
+                if (bestEnd < end) {
+                    continue;
+                }
+                // Check the above assumption
+                if (bestStart > start) Kit.codeBug(); // should be nested
+                if (bestEnd == end) Kit.codeBug();  // no ens sharing
+            }
+            best = i;
+            bestStart = start;
+            bestEnd = end;
+        }
+        return best;
+    }
+
+    private static void dumpICode(InterpreterData idata)
+    {
+        if (!Token.printICode) {
+            return;
+        }
+
+        byte iCode[] = idata.itsICode;
+        int iCodeLength = iCode.length;
+        String[] strings = idata.itsStringTable;
+        PrintStream out = System.out;
+        out.println("ICode dump, for " + idata.itsName
+                    + ", length = " + iCodeLength);
+        out.println("MaxStack = " + idata.itsMaxStack);
+
+        int indexReg = 0;
+        for (int pc = 0; pc < iCodeLength; ) {
+            out.flush();
+            out.print(" [" + pc + "] ");
+            int token = iCode[pc];
+            int icodeLength = bytecodeSpan(token);
+            String tname = bytecodeName(token);
+            int old_pc = pc;
+            ++pc;
+            switch (token) {
+              default:
+                if (icodeLength != 1) Kit.codeBug();
+                out.println(tname);
+                break;
+
+              case Icode_GOSUB :
+              case Token.GOTO :
+              case Token.IFEQ :
+              case Token.IFNE :
+              case Icode_IFEQ_POP :
+              case Icode_LEAVEDQ : {
+                int newPC = pc + getShort(iCode, pc) - 1;
+                out.println(tname + " " + newPC);
+                pc += 2;
+                break;
+              }
+              case Icode_VAR_INC_DEC :
+              case Icode_NAME_INC_DEC :
+              case Icode_PROP_INC_DEC :
+              case Icode_ELEM_INC_DEC :
+              case Icode_REF_INC_DEC: {
+                int incrDecrType = iCode[pc];
+                out.println(tname + " " + incrDecrType);
+                ++pc;
+                break;
+              }
+
+              case Icode_CALLSPECIAL : {
+                int callType = iCode[pc] & 0xFF;
+                boolean isNew =  (iCode[pc + 1] != 0);
+                int line = getIndex(iCode, pc+2);
+                out.println(tname+" "+callType+" "+isNew+" "+indexReg+" "+line);
+                pc += 4;
+                break;
+              }
+
+              case Token.CATCH_SCOPE:
+                {
+                    boolean afterFisrtFlag =  (iCode[pc] != 0);
+                    out.println(tname+" "+afterFisrtFlag);
+                    ++pc;
+                }
+                break;
+              case Token.REGEXP :
+                out.println(tname+" "+idata.itsRegExpLiterals[indexReg]);
+                break;
+              case Token.OBJECTLIT :
+              case Icode_SPARE_ARRAYLIT :
+                out.println(tname+" "+idata.literalIds[indexReg]);
+                break;
+              case Icode_CLOSURE_EXPR :
+              case Icode_CLOSURE_STMT :
+                out.println(tname+" "+idata.itsNestedFunctions[indexReg]);
+                break;
+              case Token.CALL :
+              case Icode_TAIL_CALL :
+              case Token.REF_CALL :
+              case Token.NEW :
+                out.println(tname+' '+indexReg);
+                break;
+              case Token.THROW :
+              case Token.YIELD :
+              case Icode_GENERATOR :
+              case Icode_GENERATOR_END :
+              {
+                int line = getIndex(iCode, pc);
+                out.println(tname + " : " + line);
+                pc += 2;
+                break;
+              }
+              case Icode_SHORTNUMBER : {
+                int value = getShort(iCode, pc);
+                out.println(tname + " " + value);
+                pc += 2;
+                break;
+              }
+              case Icode_INTNUMBER : {
+                int value = getInt(iCode, pc);
+                out.println(tname + " " + value);
+                pc += 4;
+                break;
+              }
+              case Token.NUMBER : {
+                double value = idata.itsDoubleTable[indexReg];
+                out.println(tname + " " + value);
+                break;
+              }
+              case Icode_LINE : {
+                int line = getIndex(iCode, pc);
+                out.println(tname + " : " + line);
+                pc += 2;
+                break;
+              }
+              case Icode_REG_STR1: {
+                String str = strings[0xFF & iCode[pc]];
+                out.println(tname + " \"" + str + '"');
+                ++pc;
+                break;
+              }
+              case Icode_REG_STR2: {
+                String str = strings[getIndex(iCode, pc)];
+                out.println(tname + " \"" + str + '"');
+                pc += 2;
+                break;
+              }
+              case Icode_REG_STR4: {
+                String str = strings[getInt(iCode, pc)];
+                out.println(tname + " \"" + str + '"');
+                pc += 4;
+                break;
+              }
+              case Icode_REG_IND_C0:
+                  indexReg = 0;
+                  out.println(tname);
+                  break;
+              case Icode_REG_IND_C1:
+                  indexReg = 1;
+                  out.println(tname);
+                  break;
+              case Icode_REG_IND_C2:
+                  indexReg = 2;
+                  out.println(tname);
+                  break;
+              case Icode_REG_IND_C3:
+                  indexReg = 3;
+                  out.println(tname);
+                  break;
+              case Icode_REG_IND_C4:
+                  indexReg = 4;
+                  out.println(tname);
+                  break;
+              case Icode_REG_IND_C5:
+                  indexReg = 5;
+                  out.println(tname);
+                  break;
+              case Icode_REG_IND1: {
+                indexReg = 0xFF & iCode[pc];
+                out.println(tname+" "+indexReg);
+                ++pc;
+                break;
+              }
+              case Icode_REG_IND2: {
+                indexReg = getIndex(iCode, pc);
+                out.println(tname+" "+indexReg);
+                pc += 2;
+                break;
+              }
+              case Icode_REG_IND4: {
+                indexReg = getInt(iCode, pc);
+                out.println(tname+" "+indexReg);
+                pc += 4;
+                break;
+              }
+              case Icode_GETVAR1:
+              case Icode_SETVAR1:
+              case Icode_SETCONSTVAR1:
+                indexReg = iCode[pc];
+                out.println(tname+" "+indexReg);
+                ++pc;
+                break;
+            }
+            if (old_pc + icodeLength != pc) Kit.codeBug();
+        }
+
+        int[] table = idata.itsExceptionTable;
+        if (table != null) {
+            out.println("Exception handlers: "
+                         +table.length / EXCEPTION_SLOT_SIZE);
+            for (int i = 0; i != table.length;
+                 i += EXCEPTION_SLOT_SIZE)
+            {
+                int tryStart       = table[i + EXCEPTION_TRY_START_SLOT];
+                int tryEnd         = table[i + EXCEPTION_TRY_END_SLOT];
+                int handlerStart   = table[i + EXCEPTION_HANDLER_SLOT];
+                int type           = table[i + EXCEPTION_TYPE_SLOT];
+                int exceptionLocal = table[i + EXCEPTION_LOCAL_SLOT];
+                int scopeLocal     = table[i + EXCEPTION_SCOPE_SLOT];
+
+                out.println(" tryStart="+tryStart+" tryEnd="+tryEnd
+                            +" handlerStart="+handlerStart
+                            +" type="+(type == 0 ? "catch" : "finally")
+                            +" exceptionLocal="+exceptionLocal);
+            }
+        }
+        out.flush();
+    }
+
+    private static int bytecodeSpan(int bytecode)
+    {
+        switch (bytecode) {
+            case Token.THROW :
+            case Token.YIELD:
+            case Icode_GENERATOR:
+            case Icode_GENERATOR_END:
+                // source line
+                return 1 + 2;
+
+            case Icode_GOSUB :
+            case Token.GOTO :
+            case Token.IFEQ :
+            case Token.IFNE :
+            case Icode_IFEQ_POP :
+            case Icode_LEAVEDQ :
+                // target pc offset
+                return 1 + 2;
+
+            case Icode_CALLSPECIAL :
+                // call type
+                // is new
+                // line number
+                return 1 + 1 + 1 + 2;
+
+            case Token.CATCH_SCOPE:
+                // scope flag
+                return 1 + 1;
+
+            case Icode_VAR_INC_DEC:
+            case Icode_NAME_INC_DEC:
+            case Icode_PROP_INC_DEC:
+            case Icode_ELEM_INC_DEC:
+            case Icode_REF_INC_DEC:
+                // type of ++/--
+                return 1 + 1;
+
+            case Icode_SHORTNUMBER :
+                // short number
+                return 1 + 2;
+
+            case Icode_INTNUMBER :
+                // int number
+                return 1 + 4;
+
+            case Icode_REG_IND1:
+                // ubyte index
+                return 1 + 1;
+
+            case Icode_REG_IND2:
+                // ushort index
+                return 1 + 2;
+
+            case Icode_REG_IND4:
+                // int index
+                return 1 + 4;
+
+            case Icode_REG_STR1:
+                // ubyte string index
+                return 1 + 1;
+
+            case Icode_REG_STR2:
+                // ushort string index
+                return 1 + 2;
+
+            case Icode_REG_STR4:
+                // int string index
+                return 1 + 4;
+
+            case Icode_GETVAR1:
+            case Icode_SETVAR1:
+            case Icode_SETCONSTVAR1:
+                // byte var index
+                return 1 + 1;
+
+            case Icode_LINE :
+                // line number
+                return 1 + 2;
+        }
+        if (!validBytecode(bytecode)) throw Kit.codeBug();
+        return 1;
+    }
+
+    static int[] getLineNumbers(InterpreterData data)
+    {
+        UintMap presentLines = new UintMap();
+
+        byte[] iCode = data.itsICode;
+        int iCodeLength = iCode.length;
+        for (int pc = 0; pc != iCodeLength;) {
+            int bytecode = iCode[pc];
+            int span = bytecodeSpan(bytecode);
+            if (bytecode == Icode_LINE) {
+                if (span != 3) Kit.codeBug();
+                int line = getIndex(iCode, pc + 1);
+                presentLines.put(line, 0);
+            }
+            pc += span;
+        }
+
+        return presentLines.getKeys();
+    }
+
+    public void captureStackInfo(RhinoException ex)
+    {
+        Context cx = Context.getCurrentContext();
+        if (cx == null || cx.lastInterpreterFrame == null) {
+            // No interpreter invocations
+            ex.interpreterStackInfo = null;
+            ex.interpreterLineData = null;
+            return;
+        }
+        // has interpreter frame on the stack
+        CallFrame[] array;
+        if (cx.previousInterpreterInvocations == null
+            || cx.previousInterpreterInvocations.size() == 0)
+        {
+            array = new CallFrame[1];
+        } else {
+            int previousCount = cx.previousInterpreterInvocations.size();
+            if (cx.previousInterpreterInvocations.peek()
+                == cx.lastInterpreterFrame)
+            {
+                // It can happen if exception was generated after
+                // frame was pushed to cx.previousInterpreterInvocations
+                // but before assignment to cx.lastInterpreterFrame.
+                // In this case frames has to be ignored.
+                --previousCount;
+            }
+            array = new CallFrame[previousCount + 1];
+            cx.previousInterpreterInvocations.toArray(array);
+        }
+        array[array.length - 1]  = (CallFrame)cx.lastInterpreterFrame;
+
+        int interpreterFrameCount = 0;
+        for (int i = 0; i != array.length; ++i) {
+            interpreterFrameCount += 1 + array[i].frameIndex;
+        }
+
+        int[] linePC = new int[interpreterFrameCount];
+        // Fill linePC with pc positions from all interpreter frames.
+        // Start from the most nested frame
+        int linePCIndex = interpreterFrameCount;
+        for (int i = array.length; i != 0;) {
+            --i;
+            CallFrame frame = array[i];
+            while (frame != null) {
+                --linePCIndex;
+                linePC[linePCIndex] = frame.pcSourceLineStart;
+                frame = frame.parentFrame;
+            }
+        }
+        if (linePCIndex != 0) Kit.codeBug();
+
+        ex.interpreterStackInfo = array;
+        ex.interpreterLineData = linePC;
+    }
+
+    public String getSourcePositionFromStack(Context cx, int[] linep)
+    {
+        CallFrame frame = (CallFrame)cx.lastInterpreterFrame;
+        InterpreterData idata = frame.idata;
+        if (frame.pcSourceLineStart >= 0) {
+            linep[0] = getIndex(idata.itsICode, frame.pcSourceLineStart);
+        } else {
+            linep[0] = 0;
+        }
+        return idata.itsSourceFile;
+    }
+
+    public String getPatchedStack(RhinoException ex,
+                                  String nativeStackTrace)
+    {
+        String tag = "org.mozilla.javascript.Interpreter.interpretLoop";
+        StringBuffer sb = new StringBuffer(nativeStackTrace.length() + 1000);
+        String lineSeparator = SecurityUtilities.getSystemProperty("line.separator");
+
+        CallFrame[] array = (CallFrame[])ex.interpreterStackInfo;
+        int[] linePC = ex.interpreterLineData;
+        int arrayIndex = array.length;
+        int linePCIndex = linePC.length;
+        int offset = 0;
+        while (arrayIndex != 0) {
+            --arrayIndex;
+            int pos = nativeStackTrace.indexOf(tag, offset);
+            if (pos < 0) {
+                break;
+            }
+
+            // Skip tag length
+            pos += tag.length();
+            // Skip until the end of line
+            for (; pos != nativeStackTrace.length(); ++pos) {
+                char c = nativeStackTrace.charAt(pos);
+                if (c == '\n' || c == '\r') {
+                    break;
+                }
+            }
+            sb.append(nativeStackTrace.substring(offset, pos));
+            offset = pos;
+
+            CallFrame frame = array[arrayIndex];
+            while (frame != null) {
+                if (linePCIndex == 0) Kit.codeBug();
+                --linePCIndex;
+                InterpreterData idata = frame.idata;
+                sb.append(lineSeparator);
+                sb.append("\tat script");
+                if (idata.itsName != null && idata.itsName.length() != 0) {
+                    sb.append('.');
+                    sb.append(idata.itsName);
+                }
+                sb.append('(');
+                sb.append(idata.itsSourceFile);
+                int pc = linePC[linePCIndex];
+                if (pc >= 0) {
+                    // Include line info only if available
+                    sb.append(':');
+                    sb.append(getIndex(idata.itsICode, pc));
+                }
+                sb.append(')');
+                frame = frame.parentFrame;
+            }
+        }
+        sb.append(nativeStackTrace.substring(offset));
+
+        return sb.toString();
+    }
+
+    public List getScriptStack(RhinoException ex)
+    {
+        if (ex.interpreterStackInfo == null) {
+            return null;
+        }
+        
+        List list = new ArrayList();
+        String lineSeparator =
+                SecurityUtilities.getSystemProperty("line.separator");
+
+        CallFrame[] array = (CallFrame[])ex.interpreterStackInfo;
+        int[] linePC = ex.interpreterLineData;
+        int arrayIndex = array.length;
+        int linePCIndex = linePC.length;
+        while (arrayIndex != 0) {
+            --arrayIndex;
+            StringBuffer sb = new StringBuffer();
+            CallFrame frame = array[arrayIndex];
+            while (frame != null) {
+                if (linePCIndex == 0) Kit.codeBug();
+                --linePCIndex;
+                InterpreterData idata = frame.idata;
+                sb.append("\tat ");
+                sb.append(idata.itsSourceFile);
+                int pc = linePC[linePCIndex];
+                if (pc >= 0) {
+                    // Include line info only if available
+                    sb.append(':');
+                    sb.append(getIndex(idata.itsICode, pc));
+                }
+                if (idata.itsName != null && idata.itsName.length() != 0) {
+                    sb.append(" (");
+                    sb.append(idata.itsName);
+                    sb.append(')');
+                }
+                sb.append(lineSeparator);
+                frame = frame.parentFrame;
+            }
+            list.add(sb.toString());
+        }
+        return list;
+    }
+        
+    static String getEncodedSource(InterpreterData idata)
+    {
+        if (idata.encodedSource == null) {
+            return null;
+        }
+        return idata.encodedSource.substring(idata.encodedSourceStart,
+                                             idata.encodedSourceEnd);
+    }
+
+    private static void initFunction(Context cx, Scriptable scope,
+                                     InterpretedFunction parent, int index)
+    {
+        InterpretedFunction fn;
+        fn = InterpretedFunction.createFunction(cx, scope, parent, index);
+        ScriptRuntime.initFunction(cx, scope, fn, fn.idata.itsFunctionType,
+                                   parent.idata.evalScriptFlag);
+    }
+
+    static Object interpret(InterpretedFunction ifun,
+                            Context cx, Scriptable scope,
+                            Scriptable thisObj, Object[] args)
+    {
+        if (!ScriptRuntime.hasTopCall(cx)) Kit.codeBug();
+
+        if (cx.interpreterSecurityDomain != ifun.securityDomain) {
+            Object savedDomain = cx.interpreterSecurityDomain;
+            cx.interpreterSecurityDomain = ifun.securityDomain;
+            try {
+                return ifun.securityController.callWithDomain(
+                    ifun.securityDomain, cx, ifun, scope, thisObj, args);
+            } finally {
+                cx.interpreterSecurityDomain = savedDomain;
+            }
+        }
+
+        CallFrame frame = new CallFrame();
+        initFrame(cx, scope, thisObj, args, null, 0, args.length,
+                  ifun, null, frame);
+
+        return interpretLoop(cx, frame, null);
+    }
+
+    static class GeneratorState {
+        GeneratorState(int operation, Object value) {
+            this.operation = operation;
+            this.value = value;
+        }
+        int operation;
+        Object value;
+        RuntimeException returnedException;
+    }
+
+    public static Object resumeGenerator(Context cx,
+                                         Scriptable scope,
+                                         int operation,
+                                         Object savedState,
+                                         Object value)
+    {
+      CallFrame frame = (CallFrame) savedState;
+      GeneratorState generatorState = new GeneratorState(operation, value);
+      if (operation == NativeGenerator.GENERATOR_CLOSE) {
+          try {
+              return interpretLoop(cx, frame, generatorState);
+          } catch (RuntimeException e) {
+              // Only propagate exceptions other than closingException
+              if (e != value)
+                  throw e;
+          }
+          return Undefined.instance;
+      }
+      Object result = interpretLoop(cx, frame, generatorState);
+      if (generatorState.returnedException != null)
+          throw generatorState.returnedException;
+      return result;
+    }
+
+    public static Object restartContinuation(Continuation c, Context cx,
+                                             Scriptable scope, Object[] args)
+    {
+        if (!ScriptRuntime.hasTopCall(cx)) {
+            return ScriptRuntime.doTopCall(c, cx, scope, null, args);
+        }
+
+        Object arg;
+        if (args.length == 0) {
+            arg = Undefined.instance;
+        } else {
+            arg = args[0];
+        }
+
+        CallFrame capturedFrame = (CallFrame)c.getImplementation();
+        if (capturedFrame == null) {
+            // No frames to restart
+            return arg;
+        }
+
+        ContinuationJump cjump = new ContinuationJump(c, null);
+
+        cjump.result = arg;
+        return interpretLoop(cx, null, cjump);
+    }
+
+    private static Object interpretLoop(Context cx, CallFrame frame,
+                                        Object throwable)
+    {
+        // throwable holds exception object to rethrow or catch
+        // It is also used for continuation restart in which case
+        // it holds ContinuationJump
+
+        final Object DBL_MRK = UniqueTag.DOUBLE_MARK;
+        final Object undefined = Undefined.instance;
+
+        final boolean instructionCounting = (cx.instructionThreshold != 0);
+        // arbitrary number to add to instructionCount when calling
+        // other functions
+        final int INVOCATION_COST = 100;
+        // arbitrary exception cost for instruction counting
+        final int EXCEPTION_COST = 100;
+
+        String stringReg = null;
+        int indexReg = -1;
+
+        if (cx.lastInterpreterFrame != null) {
+            // save the top frame from the previous interpretLoop
+            // invocation on the stack
+            if (cx.previousInterpreterInvocations == null) {
+                cx.previousInterpreterInvocations = new ObjArray();
+            }
+            cx.previousInterpreterInvocations.push(cx.lastInterpreterFrame);
+        }
+
+        // When restarting continuation throwable is not null and to jump
+        // to the code that rewind continuation state indexReg should be set
+        // to -1.
+        // With the normal call throable == null and indexReg == -1 allows to
+        // catch bugs with using indeReg to access array eleemnts before
+        // initializing indexReg.
+
+        GeneratorState generatorState = null;
+        if (throwable != null) {
+            if (throwable instanceof GeneratorState) {
+              generatorState = (GeneratorState) throwable;
+
+              // reestablish this call frame
+              enterFrame(cx, frame, ScriptRuntime.emptyArgs, true);
+              throwable = null;
+            } else if (!(throwable instanceof ContinuationJump)) {
+                // It should be continuation
+                Kit.codeBug();
+            }
+        }
+
+        Object interpreterResult = null;
+        double interpreterResultDbl = 0.0;
+
+        StateLoop: for (;;) {
+            withoutExceptions: try {
+
+                if (throwable != null) {
+                    // Need to return both 'frame' and 'throwable' from
+                    // 'processThrowable', so just added a 'throwable'
+                    // member in 'frame'.
+                    frame = processThrowable(cx, throwable, frame, indexReg,
+                                             instructionCounting);
+                    throwable = frame.throwable;
+                    frame.throwable = null;
+                } else {
+                    if (generatorState == null && frame.frozen) Kit.codeBug();
+                }
+
+                // Use local variables for constant values in frame
+                // for faster access
+                Object[] stack = frame.stack;
+                double[] sDbl = frame.sDbl;
+                Object[] vars = frame.varSource.stack;
+                double[] varDbls = frame.varSource.sDbl;
+                int[] varAttributes = frame.varSource.stackAttributes;
+                byte[] iCode = frame.idata.itsICode;
+                String[] strings = frame.idata.itsStringTable;
+
+                // Use local for stackTop as well. Since execption handlers
+                // can only exist at statement level where stack is empty,
+                // it is necessary to save/restore stackTop only across
+                // function calls and normal returns.
+                int stackTop = frame.savedStackTop;
+
+                // Store new frame in cx which is used for error reporting etc.
+                cx.lastInterpreterFrame = frame;
+
+                Loop: for (;;) {
+
+                    // Exception handler assumes that PC is already incremented
+                    // pass the instruction start when it searches the
+                    // exception handler
+                    int op = iCode[frame.pc++];
+                    jumplessRun: {
+
+    // Back indent to ease implementation reading
+switch (op) {
+    case Icode_GENERATOR: {
+        if (!frame.frozen) {
+          // First time encountering this opcode: create new generator
+          // object and return
+          frame.pc--; // we want to come back here when we resume
+          CallFrame generatorFrame = captureFrameForGenerator(frame);
+          generatorFrame.frozen = true;
+          NativeGenerator generator = new NativeGenerator(frame.scope, 
+              generatorFrame.fnOrScript, generatorFrame);
+          frame.result = generator;
+          break Loop;
+        } else {
+          // We are now resuming execution. Fall through to YIELD case.
+        }
+    }
+    // fall through...
+    case Token.YIELD: {
+        if (!frame.frozen) {
+            return freezeGenerator(cx, frame, stackTop, generatorState);
+        } else {
+            Object obj = thawGenerator(frame, stackTop, generatorState, op);
+            if (obj != Scriptable.NOT_FOUND) {
+                throwable = obj;
+                break withoutExceptions;
+            }
+            continue Loop;
+        }
+    }
+    case Icode_GENERATOR_END: {
+      // throw StopIteration
+      frame.frozen = true;
+      int sourceLine = getIndex(iCode, frame.pc);
+      generatorState.returnedException = new JavaScriptException(
+          NativeIterator.getStopIterationObject(frame.scope),
+          frame.idata.itsSourceFile, sourceLine);
+      break Loop;
+    }
+    case Token.THROW: {
+        Object value = stack[stackTop];
+        if (value == DBL_MRK) value = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+
+        int sourceLine = getIndex(iCode, frame.pc);
+        throwable = new JavaScriptException(value,
+                                            frame.idata.itsSourceFile,
+                                            sourceLine);
+        break withoutExceptions;
+    }
+    case Token.RETHROW: {
+        indexReg += frame.localShift;
+        throwable = stack[indexReg];
+        break withoutExceptions;
+    }
+    case Token.GE :
+    case Token.LE :
+    case Token.GT :
+    case Token.LT : {
+        --stackTop;
+        Object rhs = stack[stackTop + 1];
+        Object lhs = stack[stackTop];
+        boolean valBln;
+      object_compare:
+        {
+          number_compare:
+            {
+                double rDbl, lDbl;
+                if (rhs == DBL_MRK) {
+                    rDbl = sDbl[stackTop + 1];
+                    lDbl = stack_double(frame, stackTop);
+                } else if (lhs == DBL_MRK) {
+                    rDbl = ScriptRuntime.toNumber(rhs);
+                    lDbl = sDbl[stackTop];
+                } else {
+                    break number_compare;
+                }
+                switch (op) {
+                  case Token.GE:
+                    valBln = (lDbl >= rDbl);
+                    break object_compare;
+                  case Token.LE:
+                    valBln = (lDbl <= rDbl);
+                    break object_compare;
+                  case Token.GT:
+                    valBln = (lDbl > rDbl);
+                    break object_compare;
+                  case Token.LT:
+                    valBln = (lDbl < rDbl);
+                    break object_compare;
+                  default:
+                    throw Kit.codeBug();
+                }
+            }
+            switch (op) {
+              case Token.GE:
+                valBln = ScriptRuntime.cmp_LE(rhs, lhs);
+                break;
+              case Token.LE:
+                valBln = ScriptRuntime.cmp_LE(lhs, rhs);
+                break;
+              case Token.GT:
+                valBln = ScriptRuntime.cmp_LT(rhs, lhs);
+                break;
+              case Token.LT:
+                valBln = ScriptRuntime.cmp_LT(lhs, rhs);
+                break;
+              default:
+                throw Kit.codeBug();
+            }
+        }
+        stack[stackTop] = ScriptRuntime.wrapBoolean(valBln);
+        continue Loop;
+    }
+    case Token.IN :
+    case Token.INSTANCEOF : {
+        Object rhs = stack[stackTop];
+        if (rhs == DBL_MRK) rhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        boolean valBln;
+        if (op == Token.IN) {
+            valBln = ScriptRuntime.in(lhs, rhs, cx);
+        } else {
+            valBln = ScriptRuntime.instanceOf(lhs, rhs, cx);
+        }
+        stack[stackTop] = ScriptRuntime.wrapBoolean(valBln);
+        continue Loop;
+    }
+    case Token.EQ :
+    case Token.NE : {
+        --stackTop;
+        boolean valBln;
+        Object rhs = stack[stackTop + 1];
+        Object lhs = stack[stackTop];
+        if (rhs == DBL_MRK) {
+            if (lhs == DBL_MRK) {
+                valBln = (sDbl[stackTop] == sDbl[stackTop + 1]);
+            } else {
+                valBln = ScriptRuntime.eqNumber(sDbl[stackTop + 1], lhs);
+            }
+        } else {
+            if (lhs == DBL_MRK) {
+                valBln = ScriptRuntime.eqNumber(sDbl[stackTop], rhs);
+            } else {
+                valBln = ScriptRuntime.eq(lhs, rhs);
+            }
+        }
+        valBln ^= (op == Token.NE);
+        stack[stackTop] = ScriptRuntime.wrapBoolean(valBln);
+        continue Loop;
+    }
+    case Token.SHEQ :
+    case Token.SHNE : {
+        --stackTop;
+        Object rhs = stack[stackTop + 1];
+        Object lhs = stack[stackTop];
+        boolean valBln;
+      shallow_compare: {
+            double rdbl, ldbl;
+            if (rhs == DBL_MRK) {
+                rdbl = sDbl[stackTop + 1];
+                if (lhs == DBL_MRK) {
+                    ldbl = sDbl[stackTop];
+                } else if (lhs instanceof Number) {
+                    ldbl = ((Number)lhs).doubleValue();
+                } else {
+                    valBln = false;
+                    break shallow_compare;
+                }
+            } else if (lhs == DBL_MRK) {
+                ldbl = sDbl[stackTop];
+                if (rhs == DBL_MRK) {
+                    rdbl = sDbl[stackTop + 1];
+                } else if (rhs instanceof Number) {
+                    rdbl = ((Number)rhs).doubleValue();
+                } else {
+                    valBln = false;
+                    break shallow_compare;
+                }
+            } else {
+                valBln = ScriptRuntime.shallowEq(lhs, rhs);
+                break shallow_compare;
+            }
+            valBln = (ldbl == rdbl);
+        }
+        valBln ^= (op == Token.SHNE);
+        stack[stackTop] = ScriptRuntime.wrapBoolean(valBln);
+        continue Loop;
+    }
+    case Token.IFNE :
+        if (stack_boolean(frame, stackTop--)) {
+            frame.pc += 2;
+            continue Loop;
+        }
+        break jumplessRun;
+    case Token.IFEQ :
+        if (!stack_boolean(frame, stackTop--)) {
+            frame.pc += 2;
+            continue Loop;
+        }
+        break jumplessRun;
+    case Icode_IFEQ_POP :
+        if (!stack_boolean(frame, stackTop--)) {
+            frame.pc += 2;
+            continue Loop;
+        }
+        stack[stackTop--] = null;
+        break jumplessRun;
+    case Token.GOTO :
+        break jumplessRun;
+    case Icode_GOSUB :
+        ++stackTop;
+        stack[stackTop] = DBL_MRK;
+        sDbl[stackTop] = frame.pc + 2;
+        break jumplessRun;
+    case Icode_STARTSUB :
+        if (stackTop == frame.emptyStackTop + 1) {
+            // Call from Icode_GOSUB: store return PC address in the local
+            indexReg += frame.localShift;
+            stack[indexReg] = stack[stackTop];
+            sDbl[indexReg] = sDbl[stackTop];
+            --stackTop;
+        } else {
+            // Call from exception handler: exception object is already stored
+            // in the local
+            if (stackTop != frame.emptyStackTop) Kit.codeBug();
+        }
+        continue Loop;
+    case Icode_RETSUB : {
+        // indexReg: local to store return address
+        if (instructionCounting) {
+            addInstructionCount(cx, frame, 0);
+        }
+        indexReg += frame.localShift;
+        Object value = stack[indexReg];
+        if (value != DBL_MRK) {
+            // Invocation from exception handler, restore object to rethrow
+            throwable = value;
+            break withoutExceptions;
+        }
+        // Normal return from GOSUB
+        frame.pc = (int)sDbl[indexReg];
+        if (instructionCounting) {
+            frame.pcPrevBranch = frame.pc;
+        }
+        continue Loop;
+    }
+    case Icode_POP :
+        stack[stackTop] = null;
+        stackTop--;
+        continue Loop;
+    case Icode_POP_RESULT :
+        frame.result = stack[stackTop];
+        frame.resultDbl = sDbl[stackTop];
+        stack[stackTop] = null;
+        --stackTop;
+        continue Loop;
+    case Icode_DUP :
+        stack[stackTop + 1] = stack[stackTop];
+        sDbl[stackTop + 1] = sDbl[stackTop];
+        stackTop++;
+        continue Loop;
+    case Icode_DUP2 :
+        stack[stackTop + 1] = stack[stackTop - 1];
+        sDbl[stackTop + 1] = sDbl[stackTop - 1];
+        stack[stackTop + 2] = stack[stackTop];
+        sDbl[stackTop + 2] = sDbl[stackTop];
+        stackTop += 2;
+        continue Loop;
+    case Icode_SWAP : {
+        Object o = stack[stackTop];
+        stack[stackTop] = stack[stackTop - 1];
+        stack[stackTop - 1] = o;
+        double d = sDbl[stackTop];
+        sDbl[stackTop] = sDbl[stackTop - 1];
+        sDbl[stackTop - 1] = d;
+        continue Loop;
+    }
+    case Token.RETURN :
+        frame.result = stack[stackTop];
+        frame.resultDbl = sDbl[stackTop];
+        --stackTop;
+        break Loop;
+    case Token.RETURN_RESULT :
+        break Loop;
+    case Icode_RETUNDEF :
+        frame.result = undefined;
+        break Loop;
+    case Token.BITNOT : {
+        int rIntValue = stack_int32(frame, stackTop);
+        stack[stackTop] = DBL_MRK;
+        sDbl[stackTop] = ~rIntValue;
+        continue Loop;
+    }
+    case Token.BITAND :
+    case Token.BITOR :
+    case Token.BITXOR :
+    case Token.LSH :
+    case Token.RSH : {
+        int lIntValue = stack_int32(frame, stackTop-1);
+        int rIntValue = stack_int32(frame, stackTop);
+        stack[--stackTop] = DBL_MRK;
+        switch (op) {
+          case Token.BITAND:
+            lIntValue &= rIntValue;
+            break;
+          case Token.BITOR:
+            lIntValue |= rIntValue;
+            break;
+          case Token.BITXOR:
+            lIntValue ^= rIntValue;
+            break;
+          case Token.LSH:
+            lIntValue <<= rIntValue;
+            break;
+          case Token.RSH:
+            lIntValue >>= rIntValue;
+            break;
+        }
+        sDbl[stackTop] = lIntValue;
+        continue Loop;
+    }
+    case Token.URSH : {
+        double lDbl = stack_double(frame, stackTop-1);
+        int rIntValue = stack_int32(frame, stackTop) & 0x1F;
+        stack[--stackTop] = DBL_MRK;
+        sDbl[stackTop] = ScriptRuntime.toUint32(lDbl) >>> rIntValue;
+        continue Loop;
+    }
+    case Token.NEG :
+    case Token.POS : {
+        double rDbl = stack_double(frame, stackTop);
+        stack[stackTop] = DBL_MRK;
+        if (op == Token.NEG) {
+            rDbl = -rDbl;
+        }
+        sDbl[stackTop] = rDbl;
+        continue Loop;
+    }
+    case Token.ADD :
+        --stackTop;
+        do_add(stack, sDbl, stackTop, cx);
+        continue Loop;
+    case Token.SUB :
+    case Token.MUL :
+    case Token.DIV :
+    case Token.MOD : {
+        double rDbl = stack_double(frame, stackTop);
+        --stackTop;
+        double lDbl = stack_double(frame, stackTop);
+        stack[stackTop] = DBL_MRK;
+        switch (op) {
+          case Token.SUB:
+            lDbl -= rDbl;
+            break;
+          case Token.MUL:
+            lDbl *= rDbl;
+            break;
+          case Token.DIV:
+            lDbl /= rDbl;
+            break;
+          case Token.MOD:
+            lDbl %= rDbl;
+            break;
+        }
+        sDbl[stackTop] = lDbl;
+        continue Loop;
+    }
+    case Token.NOT :
+        stack[stackTop] = ScriptRuntime.wrapBoolean(
+                              !stack_boolean(frame, stackTop));
+        continue Loop;
+    case Token.BINDNAME :
+        stack[++stackTop] = ScriptRuntime.bind(cx, frame.scope, stringReg);
+        continue Loop;
+    case Token.SETNAME : {
+        Object rhs = stack[stackTop];
+        if (rhs == DBL_MRK) rhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Scriptable lhs = (Scriptable)stack[stackTop];
+        stack[stackTop] = ScriptRuntime.setName(lhs, rhs, cx,
+                                                frame.scope, stringReg);
+        continue Loop;
+    }
+    case Icode_SETCONST: {
+        Object rhs = stack[stackTop];
+        if (rhs == DBL_MRK) rhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Scriptable lhs = (Scriptable)stack[stackTop];
+        stack[stackTop] = ScriptRuntime.setConst(lhs, rhs, cx, stringReg);
+        continue Loop;
+    }
+    case Token.DELPROP : {
+        Object rhs = stack[stackTop];
+        if (rhs == DBL_MRK) rhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.delete(lhs, rhs, cx);
+        continue Loop;
+    }
+    case Token.GETPROPNOWARN : {
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.getObjectPropNoWarn(lhs, stringReg, cx);
+        continue Loop;
+    }
+    case Token.GETPROP : {
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.getObjectProp(lhs, stringReg, cx);
+        continue Loop;
+    }
+    case Token.SETPROP : {
+        Object rhs = stack[stackTop];
+        if (rhs == DBL_MRK) rhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.setObjectProp(lhs, stringReg, rhs,
+                                                      cx);
+        continue Loop;
+    }
+    case Icode_PROP_INC_DEC : {
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.propIncrDecr(lhs, stringReg,
+                                                     cx, iCode[frame.pc]);
+        ++frame.pc;
+        continue Loop;
+    }
+    case Token.GETELEM : {
+        --stackTop;
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) {
+            lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        }
+        Object value;
+        Object id = stack[stackTop + 1];
+        if (id != DBL_MRK) {
+            value = ScriptRuntime.getObjectElem(lhs, id, cx);
+        } else {
+            double d = sDbl[stackTop + 1];
+            value = ScriptRuntime.getObjectIndex(lhs, d, cx);
+        }
+        stack[stackTop] = value;
+        continue Loop;
+    }
+    case Token.SETELEM : {
+        stackTop -= 2;
+        Object rhs = stack[stackTop + 2];
+        if (rhs == DBL_MRK) {
+            rhs = ScriptRuntime.wrapNumber(sDbl[stackTop + 2]);
+        }
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) {
+            lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        }
+        Object value;
+        Object id = stack[stackTop + 1];
+        if (id != DBL_MRK) {
+            value = ScriptRuntime.setObjectElem(lhs, id, rhs, cx);
+        } else {
+            double d = sDbl[stackTop + 1];
+            value = ScriptRuntime.setObjectIndex(lhs, d, rhs, cx);
+        }
+        stack[stackTop] = value;
+        continue Loop;
+    }
+    case Icode_ELEM_INC_DEC: {
+        Object rhs = stack[stackTop];
+        if (rhs == DBL_MRK) rhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.elemIncrDecr(lhs, rhs, cx,
+                                                     iCode[frame.pc]);
+        ++frame.pc;
+        continue Loop;
+    }
+    case Token.GET_REF : {
+        Ref ref = (Ref)stack[stackTop];
+        stack[stackTop] = ScriptRuntime.refGet(ref, cx);
+        continue Loop;
+    }
+    case Token.SET_REF : {
+        Object value = stack[stackTop];
+        if (value == DBL_MRK) value = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Ref ref = (Ref)stack[stackTop];
+        stack[stackTop] = ScriptRuntime.refSet(ref, value, cx);
+        continue Loop;
+    }
+    case Token.DEL_REF : {
+        Ref ref = (Ref)stack[stackTop];
+        stack[stackTop] = ScriptRuntime.refDel(ref, cx);
+        continue Loop;
+    }
+    case Icode_REF_INC_DEC : {
+        Ref ref = (Ref)stack[stackTop];
+        stack[stackTop] = ScriptRuntime.refIncrDecr(ref, cx, iCode[frame.pc]);
+        ++frame.pc;
+        continue Loop;
+    }
+    case Token.LOCAL_LOAD :
+        ++stackTop;
+        indexReg += frame.localShift;
+        stack[stackTop] = stack[indexReg];
+        sDbl[stackTop] = sDbl[indexReg];
+        continue Loop;
+    case Icode_LOCAL_CLEAR :
+        indexReg += frame.localShift;
+        stack[indexReg] = null;
+        continue Loop;
+    case Icode_NAME_AND_THIS :
+        // stringReg: name
+        ++stackTop;
+        stack[stackTop] = ScriptRuntime.getNameFunctionAndThis(stringReg,
+                                                               cx, frame.scope);
+        ++stackTop;
+        stack[stackTop] = ScriptRuntime.lastStoredScriptable(cx);
+        continue Loop;
+    case Icode_PROP_AND_THIS: {
+        Object obj = stack[stackTop];
+        if (obj == DBL_MRK) obj = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        // stringReg: property
+        stack[stackTop] = ScriptRuntime.getPropFunctionAndThis(obj, stringReg,
+                                                               cx);
+        ++stackTop;
+        stack[stackTop] = ScriptRuntime.lastStoredScriptable(cx);
+        continue Loop;
+    }
+    case Icode_ELEM_AND_THIS: {
+        Object obj = stack[stackTop - 1];
+        if (obj == DBL_MRK) obj = ScriptRuntime.wrapNumber(sDbl[stackTop - 1]);
+        Object id = stack[stackTop];
+        if (id == DBL_MRK) id = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop - 1] = ScriptRuntime.getElemFunctionAndThis(obj, id, cx);
+        stack[stackTop] = ScriptRuntime.lastStoredScriptable(cx);
+        continue Loop;
+    }
+    case Icode_VALUE_AND_THIS : {
+        Object value = stack[stackTop];
+        if (value == DBL_MRK) value = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.getValueFunctionAndThis(value, cx);
+        ++stackTop;
+        stack[stackTop] = ScriptRuntime.lastStoredScriptable(cx);
+        continue Loop;
+    }
+    case Icode_CALLSPECIAL : {
+        if (instructionCounting) {
+            cx.instructionCount += INVOCATION_COST;
+        }
+        int callType = iCode[frame.pc] & 0xFF;
+        boolean isNew =  (iCode[frame.pc + 1] != 0);
+        int sourceLine = getIndex(iCode, frame.pc + 2);
+
+        // indexReg: number of arguments
+        if (isNew) {
+            // stack change: function arg0 .. argN -> newResult
+            stackTop -= indexReg;
+
+            Object function = stack[stackTop];
+            if (function == DBL_MRK)
+                function = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+            Object[] outArgs = getArgsArray(
+                                   stack, sDbl, stackTop + 1, indexReg);
+            stack[stackTop] = ScriptRuntime.newSpecial(
+                                  cx, function, outArgs, frame.scope, callType);
+        } else {
+            // stack change: function thisObj arg0 .. argN -> result
+            stackTop -= 1 + indexReg;
+
+            // Call code generation ensure that stack here
+            // is ... Callable Scriptable
+            Scriptable functionThis = (Scriptable)stack[stackTop + 1];
+            Callable function = (Callable)stack[stackTop];
+            Object[] outArgs = getArgsArray(
+                                   stack, sDbl, stackTop + 2, indexReg);
+            stack[stackTop] = ScriptRuntime.callSpecial(
+                                  cx, function, functionThis, outArgs,
+                                  frame.scope, frame.thisObj, callType,
+                                  frame.idata.itsSourceFile, sourceLine);
+        }
+        frame.pc += 4;
+        continue Loop;
+    }
+    case Token.CALL :
+    case Icode_TAIL_CALL :
+    case Token.REF_CALL : {
+        if (instructionCounting) {
+            cx.instructionCount += INVOCATION_COST;
+        }
+        // stack change: function thisObj arg0 .. argN -> result
+        // indexReg: number of arguments
+        stackTop -= 1 + indexReg;
+
+        // CALL generation ensures that fun and funThisObj
+        // are already Scriptable and Callable objects respectively
+        Callable fun = (Callable)stack[stackTop];
+        Scriptable funThisObj = (Scriptable)stack[stackTop + 1];
+        if (op == Token.REF_CALL) {
+            Object[] outArgs = getArgsArray(stack, sDbl, stackTop + 2,
+                                            indexReg);
+            stack[stackTop] = ScriptRuntime.callRef(fun, funThisObj,
+                                                    outArgs, cx);
+            continue Loop;
+        }
+        Scriptable calleeScope = frame.scope;
+        if (frame.useActivation) {
+            calleeScope = ScriptableObject.getTopLevelScope(frame.scope);
+        }
+        if (fun instanceof InterpretedFunction) {
+            InterpretedFunction ifun = (InterpretedFunction)fun;
+            if (frame.fnOrScript.securityDomain == ifun.securityDomain) {
+                CallFrame callParentFrame = frame;
+                CallFrame calleeFrame = new CallFrame();
+                if (op == Icode_TAIL_CALL) {
+                    // In principle tail call can re-use the current
+                    // frame and its stack arrays but it is hard to
+                    // do properly. Any exceptions that can legally
+                    // happen during frame re-initialization including
+                    // StackOverflowException during innocent looking
+                    // System.arraycopy may leave the current frame
+                    // data corrupted leading to undefined behaviour
+                    // in the catch code bellow that unwinds JS stack
+                    // on exceptions. Then there is issue about frame release
+                    // end exceptions there.
+                    // To avoid frame allocation a released frame
+                    // can be cached for re-use which would also benefit
+                    // non-tail calls but it is not clear that this caching
+                    // would gain in performance due to potentially
+                    // bad interaction with GC.
+                    callParentFrame = frame.parentFrame;
+                    // Release the current frame. See Bug #344501 to see why
+                    // it is being done here.
+                    exitFrame(cx, frame, null);
+                }
+                initFrame(cx, calleeScope, funThisObj, stack, sDbl,
+                          stackTop + 2, indexReg, ifun, callParentFrame,
+                          calleeFrame);
+                if (op != Icode_TAIL_CALL) {
+                    frame.savedStackTop = stackTop;
+                    frame.savedCallOp = op;
+                }
+                frame = calleeFrame;
+                continue StateLoop;
+            }
+        }
+
+        if (fun instanceof Continuation) {
+            // Jump to the captured continuation
+            ContinuationJump cjump;
+            cjump = new ContinuationJump((Continuation)fun, frame);
+
+            // continuation result is the first argument if any
+            // of contination call
+            if (indexReg == 0) {
+                cjump.result = undefined;
+            } else {
+                cjump.result = stack[stackTop + 2];
+                cjump.resultDbl = sDbl[stackTop + 2];
+            }
+
+            // Start the real unwind job
+            throwable = cjump;
+            break withoutExceptions;
+        }
+
+        if (fun instanceof IdFunctionObject) {
+            IdFunctionObject ifun = (IdFunctionObject)fun;
+            if (Continuation.isContinuationConstructor(ifun)) {
+                captureContinuation(cx, frame, stackTop);
+                continue Loop;
+            }
+            // Bug 405654 -- make best effort to keep Function.apply and 
+            // Function.call within this interpreter loop invocation
+            if(BaseFunction.isApplyOrCall(ifun)) {
+                Callable applyCallable = ScriptRuntime.getCallable(funThisObj);
+                if(applyCallable instanceof InterpretedFunction) {
+                    InterpretedFunction iApplyCallable = (InterpretedFunction)applyCallable;
+                    if(frame.fnOrScript.securityDomain == iApplyCallable.securityDomain) {
+                        frame = initFrameForApplyOrCall(cx, frame, indexReg,
+                                stack, sDbl, stackTop, op, calleeScope, ifun,
+                                iApplyCallable);
+                        continue StateLoop;
+                    }
+                }
+            }
+        }
+
+        stack[stackTop] = fun.call(cx, calleeScope, funThisObj, 
+                getArgsArray(stack, sDbl, stackTop + 2, indexReg));
+
+        continue Loop;
+    }
+    case Token.NEW : {
+        if (instructionCounting) {
+            cx.instructionCount += INVOCATION_COST;
+        }
+        // stack change: function arg0 .. argN -> newResult
+        // indexReg: number of arguments
+        stackTop -= indexReg;
+
+        Object lhs = stack[stackTop];
+        if (lhs instanceof InterpretedFunction) {
+            InterpretedFunction f = (InterpretedFunction)lhs;
+            if (frame.fnOrScript.securityDomain == f.securityDomain) {
+                Scriptable newInstance = f.createObject(cx, frame.scope);
+                CallFrame calleeFrame = new CallFrame();
+                initFrame(cx, frame.scope, newInstance, stack, sDbl,
+                          stackTop + 1, indexReg, f, frame,
+                          calleeFrame);
+
+                stack[stackTop] = newInstance;
+                frame.savedStackTop = stackTop;
+                frame.savedCallOp = op;
+                frame = calleeFrame;
+                continue StateLoop;
+            }
+        }
+        if (!(lhs instanceof Function)) {
+            if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+            throw ScriptRuntime.notFunctionError(lhs);
+        }
+        Function fun = (Function)lhs;
+
+        if (fun instanceof IdFunctionObject) {
+            IdFunctionObject ifun = (IdFunctionObject)fun;
+            if (Continuation.isContinuationConstructor(ifun)) {
+                captureContinuation(cx, frame, stackTop);
+                continue Loop;
+            }
+        }
+
+        Object[] outArgs = getArgsArray(stack, sDbl, stackTop + 1, indexReg);
+        stack[stackTop] = fun.construct(cx, frame.scope, outArgs);
+        continue Loop;
+    }
+    case Token.TYPEOF : {
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.typeof(lhs);
+        continue Loop;
+    }
+    case Icode_TYPEOFNAME :
+        stack[++stackTop] = ScriptRuntime.typeofName(frame.scope, stringReg);
+        continue Loop;
+    case Token.STRING :
+        stack[++stackTop] = stringReg;
+        continue Loop;
+    case Icode_SHORTNUMBER :
+        ++stackTop;
+        stack[stackTop] = DBL_MRK;
+        sDbl[stackTop] = getShort(iCode, frame.pc);
+        frame.pc += 2;
+        continue Loop;
+    case Icode_INTNUMBER :
+        ++stackTop;
+        stack[stackTop] = DBL_MRK;
+        sDbl[stackTop] = getInt(iCode, frame.pc);
+        frame.pc += 4;
+        continue Loop;
+    case Token.NUMBER :
+        ++stackTop;
+        stack[stackTop] = DBL_MRK;
+        sDbl[stackTop] = frame.idata.itsDoubleTable[indexReg];
+        continue Loop;
+    case Token.NAME :
+        stack[++stackTop] = ScriptRuntime.name(cx, frame.scope, stringReg);
+        continue Loop;
+    case Icode_NAME_INC_DEC :
+        stack[++stackTop] = ScriptRuntime.nameIncrDecr(frame.scope, stringReg,
+                                                       cx, iCode[frame.pc]);
+        ++frame.pc;
+        continue Loop;
+    case Icode_SETCONSTVAR1:
+        indexReg = iCode[frame.pc++];
+        // fallthrough
+    case Token.SETCONSTVAR :
+        if (!frame.useActivation) {
+            if ((varAttributes[indexReg] & ScriptableObject.READONLY) == 0) {
+                throw Context.reportRuntimeError1("msg.var.redecl",
+                                                  frame.idata.argNames[indexReg]);
+            }
+            if ((varAttributes[indexReg] & ScriptableObject.UNINITIALIZED_CONST)
+                != 0)
+            {
+                vars[indexReg] = stack[stackTop];
+                varAttributes[indexReg] &= ~ScriptableObject.UNINITIALIZED_CONST;
+                varDbls[indexReg] = sDbl[stackTop];
+            }
+        } else {
+            Object val = stack[stackTop];
+            if (val == DBL_MRK) val = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+            stringReg = frame.idata.argNames[indexReg];
+            if (frame.scope instanceof ConstProperties) {
+                ConstProperties cp = (ConstProperties)frame.scope;
+                cp.putConst(stringReg, frame.scope, val);
+            } else
+                throw Kit.codeBug();
+        }
+        continue Loop;
+    case Icode_SETVAR1:
+        indexReg = iCode[frame.pc++];
+        // fallthrough
+    case Token.SETVAR :
+        if (!frame.useActivation) {
+            if ((varAttributes[indexReg] & ScriptableObject.READONLY) == 0) {
+                vars[indexReg] = stack[stackTop];
+                varDbls[indexReg] = sDbl[stackTop];
+            }
+        } else {
+            Object val = stack[stackTop];
+            if (val == DBL_MRK) val = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+            stringReg = frame.idata.argNames[indexReg];
+            frame.scope.put(stringReg, frame.scope, val);
+        }
+        continue Loop;
+    case Icode_GETVAR1:
+        indexReg = iCode[frame.pc++];
+        // fallthrough
+    case Token.GETVAR :
+        ++stackTop;
+        if (!frame.useActivation) {
+            stack[stackTop] = vars[indexReg];
+            sDbl[stackTop] = varDbls[indexReg];
+        } else {
+            stringReg = frame.idata.argNames[indexReg];
+            stack[stackTop] = frame.scope.get(stringReg, frame.scope);
+        }
+        continue Loop;
+    case Icode_VAR_INC_DEC : {
+        // indexReg : varindex
+        ++stackTop;
+        int incrDecrMask = iCode[frame.pc];
+        if (!frame.useActivation) {
+            stack[stackTop] = DBL_MRK;
+            Object varValue = vars[indexReg];
+            double d;
+            if (varValue == DBL_MRK) {
+                d = varDbls[indexReg];
+            } else {
+                d = ScriptRuntime.toNumber(varValue);
+                vars[indexReg] = DBL_MRK;
+            }
+            double d2 = ((incrDecrMask & Node.DECR_FLAG) == 0)
+                        ? d + 1.0 : d - 1.0;
+            varDbls[indexReg] = d2;
+            sDbl[stackTop] = ((incrDecrMask & Node.POST_FLAG) == 0) ? d2 : d;
+        } else {
+            String varName = frame.idata.argNames[indexReg];
+            stack[stackTop] = ScriptRuntime.nameIncrDecr(frame.scope, varName,
+                                                         cx, incrDecrMask);
+        }
+        ++frame.pc;
+        continue Loop;
+    }
+    case Icode_ZERO :
+        ++stackTop;
+        stack[stackTop] = DBL_MRK;
+        sDbl[stackTop] = 0;
+        continue Loop;
+    case Icode_ONE :
+        ++stackTop;
+        stack[stackTop] = DBL_MRK;
+        sDbl[stackTop] = 1;
+        continue Loop;
+    case Token.NULL :
+        stack[++stackTop] = null;
+        continue Loop;
+    case Token.THIS :
+        stack[++stackTop] = frame.thisObj;
+        continue Loop;
+    case Token.THISFN :
+        stack[++stackTop] = frame.fnOrScript;
+        continue Loop;
+    case Token.FALSE :
+        stack[++stackTop] = Boolean.FALSE;
+        continue Loop;
+    case Token.TRUE :
+        stack[++stackTop] = Boolean.TRUE;
+        continue Loop;
+    case Icode_UNDEF :
+        stack[++stackTop] = undefined;
+        continue Loop;
+    case Token.ENTERWITH : {
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        frame.scope = ScriptRuntime.enterWith(lhs, cx, frame.scope);
+        continue Loop;
+    }
+    case Token.LEAVEWITH :
+        frame.scope = ScriptRuntime.leaveWith(frame.scope);
+        continue Loop;
+    case Token.CATCH_SCOPE : {
+        // stack top: exception object
+        // stringReg: name of exception variable
+        // indexReg: local for exception scope
+        --stackTop;
+        indexReg += frame.localShift;
+
+        boolean afterFirstScope =  (frame.idata.itsICode[frame.pc] != 0);
+        Throwable caughtException = (Throwable)stack[stackTop + 1];
+        Scriptable lastCatchScope;
+        if (!afterFirstScope) {
+            lastCatchScope = null;
+        } else {
+            lastCatchScope = (Scriptable)stack[indexReg];
+        }
+        stack[indexReg] = ScriptRuntime.newCatchScope(caughtException,
+                                                      lastCatchScope, stringReg,
+                                                      cx, frame.scope);
+        ++frame.pc;
+        continue Loop;
+    }
+    case Token.ENUM_INIT_KEYS :
+    case Token.ENUM_INIT_VALUES :
+    case Token.ENUM_INIT_ARRAY : {
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        indexReg += frame.localShift;
+        int enumType = op == Token.ENUM_INIT_KEYS 
+                         ? ScriptRuntime.ENUMERATE_KEYS :
+                       op == Token.ENUM_INIT_VALUES 
+                         ? ScriptRuntime.ENUMERATE_VALUES :
+                       ScriptRuntime.ENUMERATE_ARRAY;
+        stack[indexReg] = ScriptRuntime.enumInit(lhs, cx, enumType);
+        continue Loop;
+    }
+    case Token.ENUM_NEXT :
+    case Token.ENUM_ID : {
+        indexReg += frame.localShift;
+        Object val = stack[indexReg];
+        ++stackTop;
+        stack[stackTop] = (op == Token.ENUM_NEXT)
+                          ? (Object)ScriptRuntime.enumNext(val)
+                          : (Object)ScriptRuntime.enumId(val, cx);
+        continue Loop;
+    }
+    case Token.REF_SPECIAL : {
+        //stringReg: name of special property
+        Object obj = stack[stackTop];
+        if (obj == DBL_MRK) obj = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.specialRef(obj, stringReg, cx);
+        continue Loop;
+    }
+    case Token.REF_MEMBER: {
+        //indexReg: flags
+        Object elem = stack[stackTop];
+        if (elem == DBL_MRK) elem = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object obj = stack[stackTop];
+        if (obj == DBL_MRK) obj = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.memberRef(obj, elem, cx, indexReg);
+        continue Loop;
+    }
+    case Token.REF_NS_MEMBER: {
+        //indexReg: flags
+        Object elem = stack[stackTop];
+        if (elem == DBL_MRK) elem = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object ns = stack[stackTop];
+        if (ns == DBL_MRK) ns = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object obj = stack[stackTop];
+        if (obj == DBL_MRK) obj = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.memberRef(obj, ns, elem, cx, indexReg);
+        continue Loop;
+    }
+    case Token.REF_NAME: {
+        //indexReg: flags
+        Object name = stack[stackTop];
+        if (name == DBL_MRK) name = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.nameRef(name, cx, frame.scope,
+                                                indexReg);
+        continue Loop;
+    }
+    case Token.REF_NS_NAME: {
+        //indexReg: flags
+        Object name = stack[stackTop];
+        if (name == DBL_MRK) name = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        Object ns = stack[stackTop];
+        if (ns == DBL_MRK) ns = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.nameRef(ns, name, cx, frame.scope,
+                                                indexReg);
+        continue Loop;
+    }
+    case Icode_SCOPE_LOAD :
+        indexReg += frame.localShift;
+        frame.scope = (Scriptable)stack[indexReg];
+        continue Loop;
+    case Icode_SCOPE_SAVE :
+        indexReg += frame.localShift;
+        stack[indexReg] = frame.scope;
+        continue Loop;
+    case Icode_CLOSURE_EXPR :
+        stack[++stackTop] = InterpretedFunction.createFunction(cx, frame.scope,
+                                                               frame.fnOrScript,
+                                                               indexReg);
+        continue Loop;
+    case Icode_CLOSURE_STMT :
+        initFunction(cx, frame.scope, frame.fnOrScript, indexReg);
+        continue Loop;
+    case Token.REGEXP :
+        stack[++stackTop] = frame.scriptRegExps[indexReg];
+        continue Loop;
+    case Icode_LITERAL_NEW :
+        // indexReg: number of values in the literal
+        ++stackTop;
+        stack[stackTop] = new int[indexReg];
+        ++stackTop;
+        stack[stackTop] = new Object[indexReg];
+        sDbl[stackTop] = 0;
+        continue Loop;
+    case Icode_LITERAL_SET : {
+        Object value = stack[stackTop];
+        if (value == DBL_MRK) value = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        int i = (int)sDbl[stackTop];
+        ((Object[])stack[stackTop])[i] = value;
+        sDbl[stackTop] = i + 1;
+        continue Loop;
+    }
+    case Icode_LITERAL_GETTER : {
+        Object value = stack[stackTop];
+        --stackTop;
+        int i = (int)sDbl[stackTop];
+        ((Object[])stack[stackTop])[i] = value;
+        ((int[])stack[stackTop - 1])[i] = -1;
+        sDbl[stackTop] = i + 1;
+        continue Loop;
+    }
+    case Icode_LITERAL_SETTER : {
+        Object value = stack[stackTop];
+        --stackTop;
+        int i = (int)sDbl[stackTop];
+        ((Object[])stack[stackTop])[i] = value;
+        ((int[])stack[stackTop - 1])[i] = +1;
+        sDbl[stackTop] = i + 1;
+        continue Loop;
+    }
+    case Token.ARRAYLIT :
+    case Icode_SPARE_ARRAYLIT :
+    case Token.OBJECTLIT : {
+        Object[] data = (Object[])stack[stackTop];
+        --stackTop;
+        int[] getterSetters = (int[])stack[stackTop];
+        Object val;
+        if (op == Token.OBJECTLIT) {
+            Object[] ids = (Object[])frame.idata.literalIds[indexReg];
+            val = ScriptRuntime.newObjectLiteral(ids, data, getterSetters, cx,
+                    frame.scope);
+        } else {
+            int[] skipIndexces = null;
+            if (op == Icode_SPARE_ARRAYLIT) {
+                skipIndexces = (int[])frame.idata.literalIds[indexReg];
+            }
+            val = ScriptRuntime.newArrayLiteral(data, skipIndexces, cx,
+                                                frame.scope);
+        }
+        stack[stackTop] = val;
+        continue Loop;
+    }
+    case Icode_ENTERDQ : {
+        Object lhs = stack[stackTop];
+        if (lhs == DBL_MRK) lhs = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        --stackTop;
+        frame.scope = ScriptRuntime.enterDotQuery(lhs, frame.scope);
+        continue Loop;
+    }
+    case Icode_LEAVEDQ : {
+        boolean valBln = stack_boolean(frame, stackTop);
+        Object x = ScriptRuntime.updateDotQuery(valBln, frame.scope);
+        if (x != null) {
+            stack[stackTop] = x;
+            frame.scope = ScriptRuntime.leaveDotQuery(frame.scope);
+            frame.pc += 2;
+            continue Loop;
+        }
+        // reset stack and PC to code after ENTERDQ
+        --stackTop;
+        break jumplessRun;
+    }
+    case Token.DEFAULTNAMESPACE : {
+        Object value = stack[stackTop];
+        if (value == DBL_MRK) value = ScriptRuntime.wrapNumber(sDbl[stackTop]);
+        stack[stackTop] = ScriptRuntime.setDefaultNamespace(value, cx);
+        continue Loop;
+    }
+    case Token.ESCXMLATTR : {
+        Object value = stack[stackTop];
+        if (value != DBL_MRK) {
+            stack[stackTop] = ScriptRuntime.escapeAttributeValue(value, cx);
+        }
+        continue Loop;
+    }
+    case Token.ESCXMLTEXT : {
+        Object value = stack[stackTop];
+        if (value != DBL_MRK) {
+            stack[stackTop] = ScriptRuntime.escapeTextValue(value, cx);
+        }
+        continue Loop;
+    }
+    case Icode_DEBUGGER:
+        if (frame.debuggerFrame != null) {
+            frame.debuggerFrame.onDebuggerStatement(cx);
+        }
+        break Loop;
+    case Icode_LINE :
+        frame.pcSourceLineStart = frame.pc;
+        if (frame.debuggerFrame != null) {
+            int line = getIndex(iCode, frame.pc);
+            frame.debuggerFrame.onLineChange(cx, line);
+        }
+        frame.pc += 2;
+        continue Loop;
+    case Icode_REG_IND_C0:
+        indexReg = 0;
+        continue Loop;
+    case Icode_REG_IND_C1:
+        indexReg = 1;
+        continue Loop;
+    case Icode_REG_IND_C2:
+        indexReg = 2;
+        continue Loop;
+    case Icode_REG_IND_C3:
+        indexReg = 3;
+        continue Loop;
+    case Icode_REG_IND_C4:
+        indexReg = 4;
+        continue Loop;
+    case Icode_REG_IND_C5:
+        indexReg = 5;
+        continue Loop;
+    case Icode_REG_IND1:
+        indexReg = 0xFF & iCode[frame.pc];
+        ++frame.pc;
+        continue Loop;
+    case Icode_REG_IND2:
+        indexReg = getIndex(iCode, frame.pc);
+        frame.pc += 2;
+        continue Loop;
+    case Icode_REG_IND4:
+        indexReg = getInt(iCode, frame.pc);
+        frame.pc += 4;
+        continue Loop;
+    case Icode_REG_STR_C0:
+        stringReg = strings[0];
+        continue Loop;
+    case Icode_REG_STR_C1:
+        stringReg = strings[1];
+        continue Loop;
+    case Icode_REG_STR_C2:
+        stringReg = strings[2];
+        continue Loop;
+    case Icode_REG_STR_C3:
+        stringReg = strings[3];
+        continue Loop;
+    case Icode_REG_STR1:
+        stringReg = strings[0xFF & iCode[frame.pc]];
+        ++frame.pc;
+        continue Loop;
+    case Icode_REG_STR2:
+        stringReg = strings[getIndex(iCode, frame.pc)];
+        frame.pc += 2;
+        continue Loop;
+    case Icode_REG_STR4:
+        stringReg = strings[getInt(iCode, frame.pc)];
+        frame.pc += 4;
+        continue Loop;
+    default :
+        dumpICode(frame.idata);
+        throw new RuntimeException(
+            "Unknown icode : "+op+" @ pc : "+(frame.pc-1));
+}  // end of interpreter switch
+
+                    } // end of jumplessRun label block
+
+                    // This should be reachable only for jump implementation
+                    // when pc points to encoded target offset
+                    if (instructionCounting) {
+                        addInstructionCount(cx, frame, 2);
+                    }
+                    int offset = getShort(iCode, frame.pc);
+                    if (offset != 0) {
+                        // -1 accounts for pc pointing to jump opcode + 1
+                        frame.pc += offset - 1;
+                    } else {
+                        frame.pc = frame.idata.longJumps.
+                                       getExistingInt(frame.pc);
+                    }
+                    if (instructionCounting) {
+                        frame.pcPrevBranch = frame.pc;
+                    }
+                    continue Loop;
+
+                } // end of Loop: for
+
+                exitFrame(cx, frame, null);
+                interpreterResult = frame.result;
+                interpreterResultDbl = frame.resultDbl;
+                if (frame.parentFrame != null) {
+                    frame = frame.parentFrame;
+                    if (frame.frozen) {
+                        frame = frame.cloneFrozen();
+                    }
+                    setCallResult(
+                        frame, interpreterResult, interpreterResultDbl);
+                    interpreterResult = null; // Help GC
+                    continue StateLoop;
+                }
+                break StateLoop;
+
+            }  // end of interpreter withoutExceptions: try
+            catch (Throwable ex) {
+                if (throwable != null) {
+                    // This is serious bug and it is better to track it ASAP
+                    ex.printStackTrace(System.err);
+                    throw new IllegalStateException();
+                }
+                throwable = ex;
+            }
+
+            // This should be reachable only after above catch or from
+            // finally when it needs to propagate exception or from
+            // explicit throw
+            if (throwable == null) Kit.codeBug();
+
+            // Exception type
+            final int EX_CATCH_STATE = 2; // Can execute JS catch
+            final int EX_FINALLY_STATE = 1; // Can execute JS finally
+            final int EX_NO_JS_STATE = 0; // Terminate JS execution
+
+            int exState;
+            ContinuationJump cjump = null;
+
+            if (generatorState != null &&
+                generatorState.operation == NativeGenerator.GENERATOR_CLOSE &&
+                throwable == generatorState.value)
+            {
+                exState = EX_FINALLY_STATE;            	
+            } else if (throwable instanceof JavaScriptException) {
+                exState = EX_CATCH_STATE;
+            } else if (throwable instanceof EcmaError) {
+                // an offical ECMA error object,
+                exState = EX_CATCH_STATE;
+            } else if (throwable instanceof EvaluatorException) {
+                exState = EX_CATCH_STATE;
+            } else if (throwable instanceof RuntimeException) {
+                exState = cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS)
+                          ? EX_CATCH_STATE
+                          : EX_FINALLY_STATE;
+            } else if (throwable instanceof Error) {
+                exState = cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS)
+                          ? EX_CATCH_STATE
+                          : EX_NO_JS_STATE;
+            } else if (throwable instanceof ContinuationJump) {
+                // It must be ContinuationJump
+                exState = EX_FINALLY_STATE;
+                cjump = (ContinuationJump)throwable;
+            } else {
+                exState = cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS)
+                          ? EX_CATCH_STATE
+                          : EX_FINALLY_STATE;
+            }
+
+            if (instructionCounting) {
+                try {
+                    addInstructionCount(cx, frame, EXCEPTION_COST);
+                } catch (RuntimeException ex) {
+                    throwable = ex;
+                    exState = EX_FINALLY_STATE;
+                } catch (Error ex) {
+                    // Error from instruction counting
+                    //     => unconditionally terminate JS
+                    throwable = ex;
+                    cjump = null;
+                    exState = EX_NO_JS_STATE;
+                }
+            }
+            if (frame.debuggerFrame != null
+                && throwable instanceof RuntimeException)
+            {
+                // Call debugger only for RuntimeException
+                RuntimeException rex = (RuntimeException)throwable;
+                try {
+                    frame.debuggerFrame.onExceptionThrown(cx, rex);
+                } catch (Throwable ex) {
+                    // Any exception from debugger
+                    //     => unconditionally terminate JS
+                    throwable = ex;
+                    cjump = null;
+                    exState = EX_NO_JS_STATE;
+                }
+            }
+
+            for (;;) {
+                if (exState != EX_NO_JS_STATE) {
+                    boolean onlyFinally = (exState != EX_CATCH_STATE);
+                    indexReg = getExceptionHandler(frame, onlyFinally);
+                    if (indexReg >= 0) {
+                        // We caught an exception, restart the loop
+                        // with exception pending the processing at the loop
+                        // start
+                        continue StateLoop;
+                    }
+                }
+                // No allowed exception handlers in this frame, unwind
+                // to parent and try to look there
+
+                exitFrame(cx, frame, throwable);
+
+                frame = frame.parentFrame;
+                if (frame == null) { break; }
+                if (cjump != null && cjump.branchFrame == frame) {
+                    // Continuation branch point was hit,
+                    // restart the state loop to reenter continuation
+                    indexReg = -1;
+                    continue StateLoop;
+                }
+            }
+
+            // No more frames, rethrow the exception or deal with continuation
+            if (cjump != null) {
+                if (cjump.branchFrame != null) {
+                    // The above loop should locate the top frame
+                    Kit.codeBug();
+                }
+                if (cjump.capturedFrame != null) {
+                    // Restarting detached continuation
+                    indexReg = -1;
+                    continue StateLoop;
+                }
+                // Return continuation result to the caller
+                interpreterResult = cjump.result;
+                interpreterResultDbl = cjump.resultDbl;
+                throwable = null;
+            }
+            break StateLoop;
+
+        } // end of StateLoop: for(;;)
+
+        // Do cleanups/restorations before the final return or throw
+
+        if (cx.previousInterpreterInvocations != null
+            && cx.previousInterpreterInvocations.size() != 0)
+        {
+            cx.lastInterpreterFrame
+                = cx.previousInterpreterInvocations.pop();
+        } else {
+            // It was the last interpreter frame on the stack
+            cx.lastInterpreterFrame = null;
+            // Force GC of the value cx.previousInterpreterInvocations
+            cx.previousInterpreterInvocations = null;
+        }
+
+        if (throwable != null) {
+            if (throwable instanceof RuntimeException) {
+                throw (RuntimeException)throwable;
+            } else {
+                // Must be instance of Error or code bug
+                throw (Error)throwable;
+            }
+        }
+
+        return (interpreterResult != DBL_MRK)
+               ? interpreterResult
+               : ScriptRuntime.wrapNumber(interpreterResultDbl);
+    }
+
+    private static CallFrame processThrowable(Context cx, Object throwable,
+                                              CallFrame frame, int indexReg,
+                                              boolean instructionCounting)
+    {
+        // Recovering from exception, indexReg contains
+        // the index of handler
+
+        if (indexReg >= 0) {
+            // Normal exception handler, transfer
+            // control appropriately
+
+            if (frame.frozen) {
+                // XXX Deal with exceptios!!!
+                frame = frame.cloneFrozen();
+            }
+            
+            int[] table = frame.idata.itsExceptionTable;
+
+            frame.pc = table[indexReg + EXCEPTION_HANDLER_SLOT];
+            if (instructionCounting) {
+                frame.pcPrevBranch = frame.pc;
+            }
+
+            frame.savedStackTop = frame.emptyStackTop;
+            int scopeLocal = frame.localShift
+                             + table[indexReg
+                                     + EXCEPTION_SCOPE_SLOT];
+            int exLocal = frame.localShift
+                             + table[indexReg
+                                     + EXCEPTION_LOCAL_SLOT];
+            frame.scope = (Scriptable)frame.stack[scopeLocal];
+            frame.stack[exLocal] = throwable;
+
+            throwable = null;
+        } else {
+            // Continuation restoration
+            ContinuationJump cjump = (ContinuationJump)throwable;
+
+            // Clear throwable to indicate that exceptions are OK
+            throwable = null;
+
+            if (cjump.branchFrame != frame) Kit.codeBug();
+
+            // Check that we have at least one frozen frame
+            // in the case of detached continuation restoration:
+            // unwind code ensure that
+            if (cjump.capturedFrame == null) Kit.codeBug();
+
+            // Need to rewind branchFrame, capturedFrame
+            // and all frames in between
+            int rewindCount = cjump.capturedFrame.frameIndex + 1;
+            if (cjump.branchFrame != null) {
+                rewindCount -= cjump.branchFrame.frameIndex;
+            }
+
+            int enterCount = 0;
+            CallFrame[] enterFrames = null;
+
+            CallFrame x = cjump.capturedFrame;
+            for (int i = 0; i != rewindCount; ++i) {
+                if (!x.frozen) Kit.codeBug();
+                if (isFrameEnterExitRequired(x)) {
+                    if (enterFrames == null) {
+                        // Allocate enough space to store the rest
+                        // of rewind frames in case all of them
+                        // would require to enter
+                        enterFrames = new CallFrame[rewindCount
+                                                    - i];
+                    }
+                    enterFrames[enterCount] = x;
+                    ++enterCount;
+                }
+                x = x.parentFrame;
+            }
+
+            while (enterCount != 0) {
+                // execute enter: walk enterFrames in the reverse
+                // order since they were stored starting from
+                // the capturedFrame, not branchFrame
+                --enterCount;
+                x = enterFrames[enterCount];
+                enterFrame(cx, x, ScriptRuntime.emptyArgs, true);
+            }
+
+            // Continuation jump is almost done: capturedFrame
+            // points to the call to the function that captured
+            // continuation, so clone capturedFrame and
+            // emulate return that function with the suplied result
+            frame = cjump.capturedFrame.cloneFrozen();
+            setCallResult(frame, cjump.result, cjump.resultDbl);
+            // restart the execution
+        }
+        frame.throwable = throwable;
+        return frame;
+    }
+
+    private static Object freezeGenerator(Context cx, CallFrame frame,
+                                          int stackTop,
+                                          GeneratorState generatorState)
+    {
+          if (generatorState.operation == NativeGenerator.GENERATOR_CLOSE) {
+              // Error: no yields when generator is closing
+              throw ScriptRuntime.typeError0("msg.yield.closing");
+          }
+          // return to our caller (which should be a method of NativeGenerator)
+          frame.frozen = true;
+          frame.result = frame.stack[stackTop];
+          frame.resultDbl = frame.sDbl[stackTop];
+          frame.savedStackTop = stackTop;
+          frame.pc--; // we want to come back here when we resume
+          ScriptRuntime.exitActivationFunction(cx);
+          return (frame.result != UniqueTag.DOUBLE_MARK)
+              ? frame.result
+              : ScriptRuntime.wrapNumber(frame.resultDbl);
+    }
+
+    private static Object thawGenerator(CallFrame frame, int stackTop,
+                                        GeneratorState generatorState, int op)
+    {
+          // we are resuming execution
+          frame.frozen = false;
+          int sourceLine = getIndex(frame.idata.itsICode, frame.pc);
+          frame.pc += 2; // skip line number data
+          if (generatorState.operation == NativeGenerator.GENERATOR_THROW) {
+              // processing a call to <generator>.throw(exception): must
+              // act as if exception was thrown from resumption point
+              return new JavaScriptException(generatorState.value,
+                                                  frame.idata.itsSourceFile,
+                                                  sourceLine);
+          }
+          if (generatorState.operation == NativeGenerator.GENERATOR_CLOSE) {
+              return generatorState.value;
+          }
+          if (generatorState.operation != NativeGenerator.GENERATOR_SEND)
+              throw Kit.codeBug();
+          if (op == Token.YIELD)
+              frame.stack[stackTop] = generatorState.value;
+          return Scriptable.NOT_FOUND;
+    }
+
+    private static CallFrame initFrameForApplyOrCall(Context cx, CallFrame frame,
+            int indexReg, Object[] stack, double[] sDbl, int stackTop, int op,
+            Scriptable calleeScope, IdFunctionObject ifun,
+            InterpretedFunction iApplyCallable)
+    {
+        Scriptable applyThis;
+        if (indexReg != 0) {
+            applyThis = ScriptRuntime.toObjectOrNull(cx, stack[stackTop + 2]);
+        }
+        else {
+            applyThis = null;
+        }
+        if (applyThis == null) {
+            // This covers the case of args[0] == (null|undefined) as well.
+            applyThis = ScriptRuntime.getTopCallScope(cx);
+        }
+        if(op == Icode_TAIL_CALL) {
+            exitFrame(cx, frame, null);
+            frame = frame.parentFrame;
+        }
+        else {
+            frame.savedStackTop = stackTop;
+            frame.savedCallOp = op;
+        }
+        CallFrame calleeFrame = new CallFrame();
+        if(BaseFunction.isApply(ifun)) {
+            Object[] callArgs = indexReg < 2 ? ScriptRuntime.emptyArgs : 
+                ScriptRuntime.getApplyArguments(cx, stack[stackTop + 3]);
+            initFrame(cx, calleeScope, applyThis, callArgs, null, 0, 
+                    callArgs.length, iApplyCallable, frame, calleeFrame);
+        }
+        else {
+            // Shift args left
+            for(int i = 1; i < indexReg; ++i) {
+                stack[stackTop + 1 + i] = stack[stackTop + 2 + i];
+                sDbl[stackTop + 1 + i] = sDbl[stackTop + 2 + i];
+            }
+            int argCount = indexReg < 2 ? 0 : indexReg - 1;
+            initFrame(cx, calleeScope, applyThis, stack, sDbl, stackTop + 2, 
+                    argCount, iApplyCallable, frame, calleeFrame);
+        }
+        
+        frame = calleeFrame;
+        return frame;
+    }
+
+    private static void initFrame(Context cx, Scriptable callerScope,
+                                  Scriptable thisObj,
+                                  Object[] args, double[] argsDbl,
+                                  int argShift, int argCount,
+                                  InterpretedFunction fnOrScript,
+                                  CallFrame parentFrame, CallFrame frame)
+    {
+        InterpreterData idata = fnOrScript.idata;
+
+        boolean useActivation = idata.itsNeedsActivation;
+        DebugFrame debuggerFrame = null;
+        if (cx.debugger != null) {
+            debuggerFrame = cx.debugger.getFrame(cx, idata);
+            if (debuggerFrame != null) {
+                useActivation = true;
+            }
+        }
+
+        if (useActivation) {
+            // Copy args to new array to pass to enterActivationFunction
+            // or debuggerFrame.onEnter
+            if (argsDbl != null) {
+                args = getArgsArray(args, argsDbl, argShift, argCount);
+            }
+            argShift = 0;
+            argsDbl = null;
+        }
+
+        Scriptable scope;
+        if (idata.itsFunctionType != 0) {
+            if (!idata.useDynamicScope) {
+                scope = fnOrScript.getParentScope();
+            } else {
+                scope = callerScope;
+            }
+
+            if (useActivation) {
+                scope = ScriptRuntime.createFunctionActivation(
+                            fnOrScript, scope, args);
+            }
+        } else {
+            scope = callerScope;
+            ScriptRuntime.initScript(fnOrScript, thisObj, cx, scope,
+                                     fnOrScript.idata.evalScriptFlag);
+        }
+
+        if (idata.itsNestedFunctions != null) {
+            if (idata.itsFunctionType != 0 && !idata.itsNeedsActivation)
+                Kit.codeBug();
+            for (int i = 0; i < idata.itsNestedFunctions.length; i++) {
+                InterpreterData fdata = idata.itsNestedFunctions[i];
+                if (fdata.itsFunctionType == FunctionNode.FUNCTION_STATEMENT) {
+                    initFunction(cx, scope, fnOrScript, i);
+                }
+            }
+        }
+
+        Scriptable[] scriptRegExps = null;
+        if (idata.itsRegExpLiterals != null) {
+            // Wrapped regexps for functions are stored in
+            // InterpretedFunction
+            // but for script which should not contain references to scope
+            // the regexps re-wrapped during each script execution
+            if (idata.itsFunctionType != 0) {
+                scriptRegExps = fnOrScript.functionRegExps;
+            } else {
+                scriptRegExps = fnOrScript.createRegExpWraps(cx, scope);
+            }
+        }
+
+        // Initialize args, vars, locals and stack
+
+        int emptyStackTop = idata.itsMaxVars + idata.itsMaxLocals - 1;
+        int maxFrameArray = idata.itsMaxFrameArray;
+        if (maxFrameArray != emptyStackTop + idata.itsMaxStack + 1)
+            Kit.codeBug();
+
+        Object[] stack;
+        int[] stackAttributes;
+        double[] sDbl;
+        boolean stackReuse;
+        if (frame.stack != null && maxFrameArray <= frame.stack.length) {
+            // Reuse stacks from old frame
+            stackReuse = true;
+            stack = frame.stack;
+            stackAttributes = frame.stackAttributes;
+            sDbl = frame.sDbl;
+        } else {
+            stackReuse = false;
+            stack = new Object[maxFrameArray];
+            stackAttributes = new int[maxFrameArray];
+            sDbl = new double[maxFrameArray];
+        }
+
+        int varCount = idata.getParamAndVarCount();
+        for (int i = 0; i < varCount; i++) {
+            if (idata.getParamOrVarConst(i))
+                stackAttributes[i] = ScriptableObject.CONST;
+        }
+        int definedArgs = idata.argCount;
+        if (definedArgs > argCount) { definedArgs = argCount; }
+
+        // Fill the frame structure
+
+        frame.parentFrame = parentFrame;
+        frame.frameIndex = (parentFrame == null)
+                           ? 0 : parentFrame.frameIndex + 1;
+        if(frame.frameIndex > cx.getMaximumInterpreterStackDepth())
+        {
+            throw Context.reportRuntimeError("Exceeded maximum stack depth");
+        }
+        frame.frozen = false;
+
+        frame.fnOrScript = fnOrScript;
+        frame.idata = idata;
+
+        frame.stack = stack;
+        frame.stackAttributes = stackAttributes;
+        frame.sDbl = sDbl;
+        frame.varSource = frame;
+        frame.localShift = idata.itsMaxVars;
+        frame.emptyStackTop = emptyStackTop;
+
+        frame.debuggerFrame = debuggerFrame;
+        frame.useActivation = useActivation;
+
+        frame.thisObj = thisObj;
+        frame.scriptRegExps = scriptRegExps;
+
+        // Initialize initial values of variables that change during
+        // interpretation.
+        frame.result = Undefined.instance;
+        frame.pc = 0;
+        frame.pcPrevBranch = 0;
+        frame.pcSourceLineStart = idata.firstLinePC;
+        frame.scope = scope;
+
+        frame.savedStackTop = emptyStackTop;
+        frame.savedCallOp = 0;
+
+        System.arraycopy(args, argShift, stack, 0, definedArgs);
+        if (argsDbl != null) {
+            System.arraycopy(argsDbl, argShift, sDbl, 0, definedArgs);
+        }
+        for (int i = definedArgs; i != idata.itsMaxVars; ++i) {
+            stack[i] = Undefined.instance;
+        }
+        if (stackReuse) {
+            // Clean the stack part and space beyond stack if any
+            // of the old array to allow to GC objects there
+            for (int i = emptyStackTop + 1; i != stack.length; ++i) {
+                stack[i] = null;
+            }
+        }
+
+        enterFrame(cx, frame, args, false);
+    }
+
+    private static boolean isFrameEnterExitRequired(CallFrame frame)
+    {
+        return frame.debuggerFrame != null || frame.idata.itsNeedsActivation;
+    }
+
+    private static void enterFrame(Context cx, CallFrame frame, Object[] args, 
+                                   boolean continuationRestart)
+    {
+        boolean usesActivation = frame.idata.itsNeedsActivation; 
+        boolean isDebugged = frame.debuggerFrame != null;
+        if(usesActivation || isDebugged) {
+            Scriptable scope = frame.scope;
+            if(scope == null) {
+                Kit.codeBug();
+            } else if (continuationRestart) {
+                // Walk the parent chain of frame.scope until a NativeCall is 
+                // found. Normally, frame.scope is a NativeCall when called 
+                // from initFrame() for a debugged or activatable function. 
+                // However, when called from interpretLoop() as part of
+                // restarting a continuation, it can also be a NativeWith if 
+                // the continuation was captured within a "with" or "catch" 
+                // block ("catch" implicitly uses NativeWith to create a scope 
+                // to expose the exception variable).
+                for(;;) {
+                    if(scope instanceof NativeWith) {
+                        scope = scope.getParentScope();
+                        if (scope == null || (frame.parentFrame != null && 
+                                              frame.parentFrame.scope == scope))
+                        {
+                            // If we get here, we didn't find a NativeCall in 
+                            // the call chain before reaching parent frame's 
+                            // scope. This should not be possible.
+                            Kit.codeBug();
+                            break; // Never reached, but keeps the static analyzer happy about "scope" not being null 5 lines above.
+                        }
+                    }
+                    else {
+                        break;
+                    }
+                }
+            }
+            if (isDebugged) {
+                frame.debuggerFrame.onEnter(cx, scope, frame.thisObj, args);
+            }
+            // Enter activation only when itsNeedsActivation true, 
+            // since debugger should not interfere with activation 
+            // chaining
+            if (usesActivation) {
+                ScriptRuntime.enterActivationFunction(cx, scope);
+            }
+        }
+    }
+
+    private static void exitFrame(Context cx, CallFrame frame,
+                                  Object throwable)
+    {
+        if (frame.idata.itsNeedsActivation) {
+            ScriptRuntime.exitActivationFunction(cx);
+        }
+
+        if (frame.debuggerFrame != null) {
+            try {
+                if (throwable instanceof Throwable) {
+                    frame.debuggerFrame.onExit(cx, true, throwable);
+                } else {
+                    Object result;
+                    ContinuationJump cjump = (ContinuationJump)throwable;
+                    if (cjump == null) {
+                        result = frame.result;
+                    } else {
+                        result = cjump.result;
+                    }
+                    if (result == UniqueTag.DOUBLE_MARK) {
+                        double resultDbl;
+                        if (cjump == null) {
+                            resultDbl = frame.resultDbl;
+                        } else {
+                            resultDbl = cjump.resultDbl;
+                        }
+                        result = ScriptRuntime.wrapNumber(resultDbl);
+                    }
+                    frame.debuggerFrame.onExit(cx, false, result);
+                }
+            } catch (Throwable ex) {
+                System.err.println(
+"RHINO USAGE WARNING: onExit terminated with exception");
+                ex.printStackTrace(System.err);
+            }
+        }
+    }
+
+    private static void setCallResult(CallFrame frame,
+                                      Object callResult,
+                                      double callResultDbl)
+    {
+        if (frame.savedCallOp == Token.CALL) {
+            frame.stack[frame.savedStackTop] = callResult;
+            frame.sDbl[frame.savedStackTop] = callResultDbl;
+        } else if (frame.savedCallOp == Token.NEW) {
+            // If construct returns scriptable,
+            // then it replaces on stack top saved original instance
+            // of the object.
+            if (callResult instanceof Scriptable) {
+                frame.stack[frame.savedStackTop] = callResult;
+            }
+        } else {
+            Kit.codeBug();
+        }
+        frame.savedCallOp = 0;
+    }
+
+    private static void captureContinuation(Context cx, CallFrame frame,
+                                            int stackTop)
+    {
+        Continuation c = new Continuation();
+        ScriptRuntime.setObjectProtoAndParent(
+            c, ScriptRuntime.getTopCallScope(cx));
+
+        // Make sure that all frames upstack frames are frozen
+        CallFrame x = frame.parentFrame;
+        while (x != null && !x.frozen) {
+            x.frozen = true;
+            // Allow to GC unused stack space
+            for (int i = x.savedStackTop + 1; i != x.stack.length; ++i) {
+                // Allow to GC unused stack space
+                x.stack[i] = null;
+                x.stackAttributes[i] = ScriptableObject.EMPTY;
+            }
+            if (x.savedCallOp == Token.CALL) {
+                // the call will always overwrite the stack top with the result
+                x.stack[x.savedStackTop] = null;
+            } else {
+                if (x.savedCallOp != Token.NEW) Kit.codeBug();
+                // the new operator uses stack top to store the constructed
+                // object so it shall not be cleared: see comments in
+                // setCallResult
+            }
+            x = x.parentFrame;
+        }
+
+        c.initImplementation(frame.parentFrame);
+        frame.stack[stackTop] = c;
+    }
+
+    private static int stack_int32(CallFrame frame, int i)
+    {
+        Object x = frame.stack[i];
+        double value;
+        if (x == UniqueTag.DOUBLE_MARK) {
+            value = frame.sDbl[i];
+        } else {
+            value = ScriptRuntime.toNumber(x);
+        }
+        return ScriptRuntime.toInt32(value);
+    }
+
+    private static double stack_double(CallFrame frame, int i)
+    {
+        Object x = frame.stack[i];
+        if (x != UniqueTag.DOUBLE_MARK) {
+            return ScriptRuntime.toNumber(x);
+        } else {
+            return frame.sDbl[i];
+        }
+    }
+
+    private static boolean stack_boolean(CallFrame frame, int i)
+    {
+        Object x = frame.stack[i];
+        if (x == Boolean.TRUE) {
+            return true;
+        } else if (x == Boolean.FALSE) {
+            return false;
+        } else if (x == UniqueTag.DOUBLE_MARK) {
+            double d = frame.sDbl[i];
+            return d == d && d != 0.0;
+        } else if (x == null || x == Undefined.instance) {
+            return false;
+        } else if (x instanceof Number) {
+            double d = ((Number)x).doubleValue();
+            return (d == d && d != 0.0);
+        } else if (x instanceof Boolean) {
+            return ((Boolean)x).booleanValue();
+        } else {
+            return ScriptRuntime.toBoolean(x);
+        }
+    }
+
+    private static void do_add(Object[] stack, double[] sDbl, int stackTop,
+                              Context cx)
+    {
+        Object rhs = stack[stackTop + 1];
+        Object lhs = stack[stackTop];
+        double d;
+        boolean leftRightOrder;
+        if (rhs == UniqueTag.DOUBLE_MARK) {
+            d = sDbl[stackTop + 1];
+            if (lhs == UniqueTag.DOUBLE_MARK) {
+                sDbl[stackTop] += d;
+                return;
+            }
+            leftRightOrder = true;
+            // fallthrough to object + number code
+        } else if (lhs == UniqueTag.DOUBLE_MARK) {
+            d = sDbl[stackTop];
+            lhs = rhs;
+            leftRightOrder = false;
+            // fallthrough to object + number code
+        } else {
+            if (lhs instanceof Scriptable || rhs instanceof Scriptable) {
+                stack[stackTop] = ScriptRuntime.add(lhs, rhs, cx);
+            } else if (lhs instanceof String) {
+                String lstr = (String)lhs;
+                String rstr = ScriptRuntime.toString(rhs);
+                stack[stackTop] = lstr.concat(rstr);
+            } else if (rhs instanceof String) {
+                String lstr = ScriptRuntime.toString(lhs);
+                String rstr = (String)rhs;
+                stack[stackTop] = lstr.concat(rstr);
+            } else {
+                double lDbl = (lhs instanceof Number)
+                    ? ((Number)lhs).doubleValue() : ScriptRuntime.toNumber(lhs);
+                double rDbl = (rhs instanceof Number)
+                    ? ((Number)rhs).doubleValue() : ScriptRuntime.toNumber(rhs);
+                stack[stackTop] = UniqueTag.DOUBLE_MARK;
+                sDbl[stackTop] = lDbl + rDbl;
+            }
+            return;
+        }
+
+        // handle object(lhs) + number(d) code
+        if (lhs instanceof Scriptable) {
+            rhs = ScriptRuntime.wrapNumber(d);
+            if (!leftRightOrder) {
+                Object tmp = lhs;
+                lhs = rhs;
+                rhs = tmp;
+            }
+            stack[stackTop] = ScriptRuntime.add(lhs, rhs, cx);
+        } else if (lhs instanceof String) {
+            String lstr = (String)lhs;
+            String rstr = ScriptRuntime.toString(d);
+            if (leftRightOrder) {
+                stack[stackTop] = lstr.concat(rstr);
+            } else {
+                stack[stackTop] = rstr.concat(lstr);
+            }
+        } else {
+            double lDbl = (lhs instanceof Number)
+                ? ((Number)lhs).doubleValue() : ScriptRuntime.toNumber(lhs);
+            stack[stackTop] = UniqueTag.DOUBLE_MARK;
+            sDbl[stackTop] = lDbl + d;
+        }
+    }
+
+    private static Object[] getArgsArray(Object[] stack, double[] sDbl,
+                                         int shift, int count)
+    {
+        if (count == 0) {
+            return ScriptRuntime.emptyArgs;
+        }
+        Object[] args = new Object[count];
+        for (int i = 0; i != count; ++i, ++shift) {
+            Object val = stack[shift];
+            if (val == UniqueTag.DOUBLE_MARK) {
+                val = ScriptRuntime.wrapNumber(sDbl[shift]);
+            }
+            args[i] = val;
+        }
+        return args;
+    }
+
+    private static void addInstructionCount(Context cx, CallFrame frame,
+                                            int extra)
+    {
+        cx.instructionCount += frame.pc - frame.pcPrevBranch + extra;
+        if (cx.instructionCount > cx.instructionThreshold) {
+            cx.observeInstructionCount(cx.instructionCount);
+            cx.instructionCount = 0;
+        }
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterpreterData.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterpreterData.java
new file mode 100644
index 0000000..7435b10
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterpreterData.java
@@ -0,0 +1,192 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Bob Jervis
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+
+import org.mozilla.javascript.debug.DebuggableScript;
+
+final class InterpreterData implements Serializable, DebuggableScript
+{
+    static final long serialVersionUID = 5067677351589230234L;
+
+    static final int INITIAL_MAX_ICODE_LENGTH = 1024;
+    static final int INITIAL_STRINGTABLE_SIZE = 64;
+    static final int INITIAL_NUMBERTABLE_SIZE = 64;
+
+    InterpreterData(int languageVersion,
+                    String sourceFile, String encodedSource)
+    {
+        this.languageVersion = languageVersion;
+        this.itsSourceFile = sourceFile;
+        this.encodedSource = encodedSource;
+
+        init();
+    }
+
+    InterpreterData(InterpreterData parent)
+    {
+        this.parentData = parent;
+        this.languageVersion = parent.languageVersion;
+        this.itsSourceFile = parent.itsSourceFile;
+        this.encodedSource = parent.encodedSource;
+
+        init();
+    }
+
+    private void init()
+    {
+        itsICode = new byte[INITIAL_MAX_ICODE_LENGTH];
+        itsStringTable = new String[INITIAL_STRINGTABLE_SIZE];
+    }
+
+    String itsName;
+    String itsSourceFile;
+    boolean itsNeedsActivation;
+    int itsFunctionType;
+
+    String[] itsStringTable;
+    double[] itsDoubleTable;
+    InterpreterData[] itsNestedFunctions;
+    Object[] itsRegExpLiterals;
+
+    byte[] itsICode;
+
+    int[] itsExceptionTable;
+
+    int itsMaxVars;
+    int itsMaxLocals;
+    int itsMaxStack;
+    int itsMaxFrameArray;
+
+    // see comments in NativeFuncion for definition of argNames and argCount
+    String[] argNames;
+    boolean[] argIsConst;
+    int argCount;
+
+    int itsMaxCalleeArgs;
+
+    String encodedSource;
+    int encodedSourceStart;
+    int encodedSourceEnd;
+
+    int languageVersion;
+
+    boolean useDynamicScope;
+
+    boolean topLevel;
+
+    Object[] literalIds;
+
+    UintMap longJumps;
+
+    int firstLinePC = -1; // PC for the first LINE icode
+
+    InterpreterData parentData;
+
+    boolean evalScriptFlag; // true if script corresponds to eval() code
+
+    public boolean isTopLevel()
+    {
+        return topLevel;
+    }
+
+    public boolean isFunction()
+    {
+        return itsFunctionType != 0;
+    }
+
+    public String getFunctionName()
+    {
+        return itsName;
+    }
+
+    public int getParamCount()
+    {
+        return argCount;
+    }
+
+    public int getParamAndVarCount()
+    {
+        return argNames.length;
+    }
+
+    public String getParamOrVarName(int index)
+    {
+        return argNames[index];
+    }
+
+    public boolean getParamOrVarConst(int index)
+    {
+        return argIsConst[index];
+    }
+
+    public String getSourceName()
+    {
+        return itsSourceFile;
+    }
+
+    public boolean isGeneratedScript()
+    {
+        return ScriptRuntime.isGeneratedScript(itsSourceFile);
+    }
+
+    public int[] getLineNumbers()
+    {
+        return Interpreter.getLineNumbers(this);
+    }
+
+    public int getFunctionCount()
+    {
+        return (itsNestedFunctions == null) ? 0 : itsNestedFunctions.length;
+    }
+
+    public DebuggableScript getFunction(int index)
+    {
+        return itsNestedFunctions[index];
+    }
+
+    public DebuggableScript getParent()
+    {
+         return parentData;
+    }
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaAdapter.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaAdapter.java
new file mode 100644
index 0000000..6e0a827
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaAdapter.java
@@ -0,0 +1,1129 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Patrick Beard
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Mike McCabe
+ *   Matthias Radestock
+ *   Andi Vajda
+ *   Andrew Wason
+ *   Kemal Bayram
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import org.mozilla.classfile.*;
+import java.lang.reflect.*;
+import java.io.*;
+import java.security.*;
+import java.util.*;
+
+public final class JavaAdapter implements IdFunctionCall
+{
+    /**
+     * Provides a key with which to distinguish previously generated
+     * adapter classes stored in a hash table.
+     */
+    static class JavaAdapterSignature
+    {
+        Class superClass;
+        Class[] interfaces;
+        ObjToIntMap names;
+
+        JavaAdapterSignature(Class superClass, Class[] interfaces,
+                             ObjToIntMap names)
+        {
+            this.superClass = superClass;
+            this.interfaces = interfaces;
+            this.names = names;
+        }
+
+        public boolean equals(Object obj)
+        {
+            if (!(obj instanceof JavaAdapterSignature))
+                return false;
+            JavaAdapterSignature sig = (JavaAdapterSignature) obj;
+            if (superClass != sig.superClass)
+                return false;
+            if (interfaces != sig.interfaces) {
+                if (interfaces.length != sig.interfaces.length)
+                    return false;
+                for (int i=0; i < interfaces.length; i++)
+                    if (interfaces[i] != sig.interfaces[i])
+                        return false;
+            }
+            if (names.size() != sig.names.size())
+                return false;
+            ObjToIntMap.Iterator iter = new ObjToIntMap.Iterator(names);
+            for (iter.start(); !iter.done(); iter.next()) {
+                String name = (String)iter.getKey();
+                int arity = iter.getValue();
+                if (arity != names.get(name, arity + 1))
+                    return false;
+            }
+            return true;
+        }
+
+        public int hashCode()
+        {
+            return superClass.hashCode()
+                | (0x9e3779b9 * (names.size() | (interfaces.length << 16)));
+        }
+    }
+
+    public static void init(Context cx, Scriptable scope, boolean sealed)
+    {
+        JavaAdapter obj = new JavaAdapter();
+        IdFunctionObject ctor = new IdFunctionObject(obj, FTAG, Id_JavaAdapter,
+                                                     "JavaAdapter", 1, scope);
+        ctor.markAsConstructor(null);
+        if (sealed) {
+            ctor.sealObject();
+        }
+        ctor.exportAsScopeProperty();
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (f.hasTag(FTAG)) {
+            if (f.methodId() == Id_JavaAdapter) {
+                return js_createAdapter(cx, scope, args);
+            }
+        }
+        throw f.unknown();
+    }
+
+    public static Object convertResult(Object result, Class c)
+    {
+        if (result == Undefined.instance &&
+            (c != ScriptRuntime.ObjectClass &&
+             c != ScriptRuntime.StringClass))
+        {
+            // Avoid an error for an undefined value; return null instead.
+            return null;
+        }
+        return Context.jsToJava(result, c);
+    }
+
+    public static Scriptable createAdapterWrapper(Scriptable obj,
+                                                  Object adapter)
+    {
+        Scriptable scope = ScriptableObject.getTopLevelScope(obj);
+        NativeJavaObject res = new NativeJavaObject(scope, adapter, null, true);
+        res.setPrototype(obj);
+        return res;
+    }
+
+    public static Object getAdapterSelf(Class adapterClass, Object adapter)
+        throws NoSuchFieldException, IllegalAccessException
+    {
+        Field self = adapterClass.getDeclaredField("self");
+        return self.get(adapter);
+    }
+
+    static Object js_createAdapter(Context cx, Scriptable scope, Object[] args)
+    {
+        int N = args.length;
+        if (N == 0) {
+            throw ScriptRuntime.typeError0("msg.adapter.zero.args");
+        }
+
+        Class superClass = null;
+        Class[] intfs = new Class[N - 1];
+        int interfaceCount = 0;
+        for (int i = 0; i != N - 1; ++i) {
+            Object arg = args[i];
+            if (!(arg instanceof NativeJavaClass)) {
+                throw ScriptRuntime.typeError2("msg.not.java.class.arg",
+                                               String.valueOf(i),
+                                               ScriptRuntime.toString(arg));
+            }
+            Class c = ((NativeJavaClass) arg).getClassObject();
+            if (!c.isInterface()) {
+                if (superClass != null) {
+                    throw ScriptRuntime.typeError2("msg.only.one.super",
+                              superClass.getName(), c.getName());
+                }
+                superClass = c;
+            } else {
+                intfs[interfaceCount++] = c;
+            }
+        }
+
+        if (superClass == null)
+            superClass = ScriptRuntime.ObjectClass;
+
+        Class[] interfaces = new Class[interfaceCount];
+        System.arraycopy(intfs, 0, interfaces, 0, interfaceCount);
+        Scriptable obj = ScriptRuntime.toObject(cx, scope, args[N - 1]);
+
+        Class adapterClass = getAdapterClass(scope, superClass, interfaces,
+                                             obj);
+
+        Class[] ctorParms = {
+            ScriptRuntime.ContextFactoryClass,
+            ScriptRuntime.ScriptableClass
+        };
+        Object[] ctorArgs = { cx.getFactory(), obj };
+        try {
+            Object adapter = adapterClass.getConstructor(ctorParms).
+                                 newInstance(ctorArgs);
+            return getAdapterSelf(adapterClass, adapter);
+        } catch (Exception ex) {
+            throw Context.throwAsScriptRuntimeEx(ex);
+        }
+    }
+
+    // Needed by NativeJavaObject serializer
+    public static void writeAdapterObject(Object javaObject,
+                                          ObjectOutputStream out)
+        throws IOException
+    {
+        Class cl = javaObject.getClass();
+        out.writeObject(cl.getSuperclass().getName());
+
+        Class[] interfaces = cl.getInterfaces();
+        String[] interfaceNames = new String[interfaces.length];
+
+        for (int i=0; i < interfaces.length; i++)
+            interfaceNames[i] = interfaces[i].getName();
+
+        out.writeObject(interfaceNames);
+
+        try {
+            Object delegee = cl.getField("delegee").get(javaObject);
+            out.writeObject(delegee);
+            return;
+        } catch (IllegalAccessException e) {
+        } catch (NoSuchFieldException e) {
+        }
+        throw new IOException();
+    }
+
+    // Needed by NativeJavaObject de-serializer
+    public static Object readAdapterObject(Scriptable self,
+                                           ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        ContextFactory factory;
+        Context cx = Context.getCurrentContext();
+        if (cx != null) {
+            factory = cx.getFactory();
+        } else {
+            factory = null;
+        }
+
+        Class superClass = Class.forName((String)in.readObject());
+
+        String[] interfaceNames = (String[])in.readObject();
+        Class[] interfaces = new Class[interfaceNames.length];
+
+        for (int i=0; i < interfaceNames.length; i++)
+            interfaces[i] = Class.forName(interfaceNames[i]);
+
+        Scriptable delegee = (Scriptable)in.readObject();
+
+        Class adapterClass = getAdapterClass(self, superClass, interfaces,
+                                             delegee);
+
+        Class[] ctorParms = {
+            ScriptRuntime.ContextFactoryClass,
+            ScriptRuntime.ScriptableClass,
+            ScriptRuntime.ScriptableClass
+        };
+        Object[] ctorArgs = { factory, delegee, self };
+        try {
+            return adapterClass.getConstructor(ctorParms).newInstance(ctorArgs);
+        } catch(InstantiationException e) {
+        } catch(IllegalAccessException e) {
+        } catch(InvocationTargetException e) {
+        } catch(NoSuchMethodException e) {
+        }
+
+        throw new ClassNotFoundException("adapter");
+    }
+
+    private static ObjToIntMap getObjectFunctionNames(Scriptable obj)
+    {
+        Object[] ids = ScriptableObject.getPropertyIds(obj);
+        ObjToIntMap map = new ObjToIntMap(ids.length);
+        for (int i = 0; i != ids.length; ++i) {
+            if (!(ids[i] instanceof String))
+                continue;
+            String id = (String) ids[i];
+            Object value = ScriptableObject.getProperty(obj, id);
+            if (value instanceof Function) {
+                Function f = (Function)value;
+                int length = ScriptRuntime.toInt32(
+                                 ScriptableObject.getProperty(f, "length"));
+                if (length < 0) {
+                    length = 0;
+                }
+                map.put(id, length);
+            }
+        }
+        return map;
+    }
+
+    private static Class getAdapterClass(Scriptable scope, Class superClass,
+                                         Class[] interfaces, Scriptable obj)
+    {
+        ClassCache cache = ClassCache.get(scope);
+        Map<JavaAdapterSignature,Class<?>> generated
+            = cache.getInterfaceAdapterCacheMap();
+
+        ObjToIntMap names = getObjectFunctionNames(obj);
+        JavaAdapterSignature sig;
+        sig = new JavaAdapterSignature(superClass, interfaces, names);
+        Class<?> adapterClass = generated.get(sig);
+        if (adapterClass == null) {
+            String adapterName = "adapter"
+                                 + cache.newClassSerialNumber();
+            byte[] code = createAdapterCode(names, adapterName,
+                                            superClass, interfaces, null);
+
+            adapterClass = loadAdapterClass(adapterName, code);
+            if (cache.isCachingEnabled()) {
+                generated.put(sig, adapterClass);
+            }
+        }
+        return adapterClass;
+    }
+
+    public static byte[] createAdapterCode(ObjToIntMap functionNames,
+                                           String adapterName,
+                                           Class superClass,
+                                           Class[] interfaces,
+                                           String scriptClassName)
+    {
+        ClassFileWriter cfw = new ClassFileWriter(adapterName,
+                                                  superClass.getName(),
+                                                  "<adapter>");
+        cfw.addField("factory", "Lorg/mozilla/javascript/ContextFactory;",
+                     (short) (ClassFileWriter.ACC_PUBLIC |
+                              ClassFileWriter.ACC_FINAL));
+        cfw.addField("delegee", "Lorg/mozilla/javascript/Scriptable;",
+                     (short) (ClassFileWriter.ACC_PUBLIC |
+                              ClassFileWriter.ACC_FINAL));
+        cfw.addField("self", "Lorg/mozilla/javascript/Scriptable;",
+                     (short) (ClassFileWriter.ACC_PUBLIC |
+                              ClassFileWriter.ACC_FINAL));
+        int interfacesCount = interfaces == null ? 0 : interfaces.length;
+        for (int i=0; i < interfacesCount; i++) {
+            if (interfaces[i] != null)
+                cfw.addInterface(interfaces[i].getName());
+        }
+
+        String superName = superClass.getName().replace('.', '/');
+        generateCtor(cfw, adapterName, superName);
+        generateSerialCtor(cfw, adapterName, superName);
+        if (scriptClassName != null)
+            generateEmptyCtor(cfw, adapterName, superName, scriptClassName);
+
+        ObjToIntMap generatedOverrides = new ObjToIntMap();
+        ObjToIntMap generatedMethods = new ObjToIntMap();
+
+        // generate methods to satisfy all specified interfaces.
+        for (int i = 0; i < interfacesCount; i++) {
+            Method[] methods = interfaces[i].getMethods();
+            for (int j = 0; j < methods.length; j++) {
+                Method method = methods[j];
+                int mods = method.getModifiers();
+                if (Modifier.isStatic(mods) || Modifier.isFinal(mods)) {
+                    continue;
+                }
+                String methodName = method.getName();
+                Class[] argTypes = method.getParameterTypes();
+                if (!functionNames.has(methodName)) {
+                    try {
+                        superClass.getMethod(methodName, argTypes);
+                        // The class we're extending implements this method and
+                        // the JavaScript object doesn't have an override. See
+                        // bug 61226.
+                        continue;
+                    } catch (NoSuchMethodException e) {
+                        // Not implemented by superclass; fall through
+                    }
+                }
+                // make sure to generate only one instance of a particular
+                // method/signature.
+                String methodSignature = getMethodSignature(method, argTypes);
+                String methodKey = methodName + methodSignature;
+                if (! generatedOverrides.has(methodKey)) {
+                    generateMethod(cfw, adapterName, methodName,
+                                   argTypes, method.getReturnType());
+                    generatedOverrides.put(methodKey, 0);
+                    generatedMethods.put(methodName, 0);
+                }
+            }
+        }
+
+        // Now, go through the superclass's methods, checking for abstract
+        // methods or additional methods to override.
+
+        // generate any additional overrides that the object might contain.
+        Method[] methods = getOverridableMethods(superClass);
+        for (int j = 0; j < methods.length; j++) {
+            Method method = methods[j];
+            int mods = method.getModifiers();
+            // if a method is marked abstract, must implement it or the
+            // resulting class won't be instantiable. otherwise, if the object
+            // has a property of the same name, then an override is intended.
+            boolean isAbstractMethod = Modifier.isAbstract(mods);
+            String methodName = method.getName();
+            if (isAbstractMethod || functionNames.has(methodName)) {
+                // make sure to generate only one instance of a particular
+                // method/signature.
+                Class[] argTypes = method.getParameterTypes();
+                String methodSignature = getMethodSignature(method, argTypes);
+                String methodKey = methodName + methodSignature;
+                if (! generatedOverrides.has(methodKey)) {
+                    generateMethod(cfw, adapterName, methodName,
+                                   argTypes, method.getReturnType());
+                    generatedOverrides.put(methodKey, 0);
+                    generatedMethods.put(methodName, 0);
+                    
+                    // if a method was overridden, generate a "super$method"
+                    // which lets the delegate call the superclass' version.
+                    if (!isAbstractMethod) {
+                        generateSuper(cfw, adapterName, superName,
+                                      methodName, methodSignature,
+                                      argTypes, method.getReturnType());
+                    }
+                }
+            }
+        }
+
+        // Generate Java methods for remaining properties that are not
+        // overrides.
+        ObjToIntMap.Iterator iter = new ObjToIntMap.Iterator(functionNames);
+        for (iter.start(); !iter.done(); iter.next()) {
+            String functionName = (String)iter.getKey();
+            if (generatedMethods.has(functionName))
+                continue;
+            int length = iter.getValue();
+            Class[] parms = new Class[length];
+            for (int k=0; k < length; k++)
+                parms[k] = ScriptRuntime.ObjectClass;
+            generateMethod(cfw, adapterName, functionName, parms,
+                           ScriptRuntime.ObjectClass);
+        }
+        return cfw.toByteArray();
+    }
+
+    static Method[] getOverridableMethods(Class c)
+    {
+        ArrayList<Method> list = new ArrayList<Method>();
+        HashSet<String> skip = new HashSet<String>();
+        while (c != null) {
+            Method[] methods = c.getDeclaredMethods();
+            for (int i = 0; i < methods.length; i++) {
+                String methodKey = methods[i].getName() + 
+                    getMethodSignature(methods[i],
+                            methods[i].getParameterTypes());
+                if (skip.contains(methodKey))
+                    continue; // skip this method
+                int mods = methods[i].getModifiers();
+                if (Modifier.isStatic(mods))
+                    continue;
+                if (Modifier.isFinal(mods)) {
+                    // Make sure we don't add a final method to the list
+                    // of overridable methods.
+                    skip.add(methodKey);
+                    continue;
+                }
+                if (Modifier.isPublic(mods) || Modifier.isProtected(mods)) {
+                    list.add(methods[i]);
+                    skip.add(methodKey);
+                }
+            }
+            c = c.getSuperclass();
+        }
+        return list.toArray(new Method[list.size()]);
+    }
+
+    static Class loadAdapterClass(String className, byte[] classBytes)
+    {
+        Object staticDomain;
+        Class domainClass = SecurityController.getStaticSecurityDomainClass();
+        if(domainClass == CodeSource.class || domainClass == ProtectionDomain.class) {
+            ProtectionDomain protectionDomain = JavaAdapter.class.getProtectionDomain();
+            if(domainClass == CodeSource.class) {
+                staticDomain = protectionDomain == null ? null : protectionDomain.getCodeSource();
+            }
+            else {
+                staticDomain = protectionDomain;
+            }
+        }
+        else {
+            staticDomain = null;
+        }
+        GeneratedClassLoader loader = SecurityController.createLoader(null, 
+                staticDomain);
+        Class result = loader.defineClass(className, classBytes);
+        loader.linkClass(result);
+        return result;
+    }
+
+    public static Function getFunction(Scriptable obj, String functionName)
+    {
+        Object x = ScriptableObject.getProperty(obj, functionName);
+        if (x == Scriptable.NOT_FOUND) {
+            // This method used to swallow the exception from calling
+            // an undefined method. People have come to depend on this
+            // somewhat dubious behavior. It allows people to avoid
+            // implementing listener methods that they don't care about,
+            // for instance.
+            return null;
+        }
+        if (!(x instanceof Function))
+            throw ScriptRuntime.notFunctionError(x, functionName);
+
+        return (Function)x;
+    }
+
+    /**
+     * Utility method which dynamically binds a Context to the current thread,
+     * if none already exists.
+     */
+    public static Object callMethod(ContextFactory factory,
+                                    final Scriptable thisObj,
+                                    final Function f, final Object[] args,
+                                    final long argsToWrap)
+    {
+        if (f == null) {
+            // See comments in getFunction
+            return Undefined.instance;
+        }
+        if (factory == null) {
+            factory = ContextFactory.getGlobal();
+        }
+
+        final Scriptable scope = f.getParentScope();
+        if (argsToWrap == 0) {
+            return Context.call(factory, f, scope, thisObj, args);
+        }
+
+        Context cx = Context.getCurrentContext();
+        if (cx != null) {
+            return doCall(cx, scope, thisObj, f, args, argsToWrap);
+        } else {
+            return factory.call(new ContextAction() {
+                public Object run(Context cx)
+                {
+                    return doCall(cx, scope, thisObj, f, args, argsToWrap);
+                }
+            });
+        }
+    }
+
+    private static Object doCall(Context cx, Scriptable scope,
+                                 Scriptable thisObj, Function f,
+                                 Object[] args, long argsToWrap)
+    {
+        // Wrap the rest of objects
+        for (int i = 0; i != args.length; ++i) {
+            if (0 != (argsToWrap & (1 << i))) {
+                Object arg = args[i];
+                if (!(arg instanceof Scriptable)) {
+                    args[i] = cx.getWrapFactory().wrap(cx, scope, arg,
+                                                       null);
+                }
+            }
+        }
+        return f.call(cx, scope, thisObj, args);
+    }
+
+    public static Scriptable runScript(final Script script)
+    {
+        return (Scriptable)Context.call(new ContextAction() {
+            public Object run(Context cx)
+            {
+                ScriptableObject global = ScriptRuntime.getGlobal(cx);
+                script.exec(cx, global);
+                return global;
+            }
+        });
+    }
+
+    private static void generateCtor(ClassFileWriter cfw, String adapterName,
+                                     String superName)
+    {
+        cfw.startMethod("<init>",
+                        "(Lorg/mozilla/javascript/ContextFactory;"
+                        +"Lorg/mozilla/javascript/Scriptable;)V",
+                        ClassFileWriter.ACC_PUBLIC);
+
+        // Invoke base class constructor
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, superName, "<init>", "()V");
+
+        // Save parameter in instance variable "factory"
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_1);  // first arg: ContextFactory instance
+        cfw.add(ByteCode.PUTFIELD, adapterName, "factory",
+                "Lorg/mozilla/javascript/ContextFactory;");
+
+        // Save parameter in instance variable "delegee"
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_2);  // second arg: Scriptable delegee
+        cfw.add(ByteCode.PUTFIELD, adapterName, "delegee",
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        cfw.add(ByteCode.ALOAD_0);  // this for the following PUTFIELD for self
+        // create a wrapper object to be used as "this" in method calls
+        cfw.add(ByteCode.ALOAD_2);  // the Scriptable delegee
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/JavaAdapter",
+                      "createAdapterWrapper",
+                      "(Lorg/mozilla/javascript/Scriptable;"
+                      +"Ljava/lang/Object;"
+                      +")Lorg/mozilla/javascript/Scriptable;");
+        cfw.add(ByteCode.PUTFIELD, adapterName, "self",
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        cfw.add(ByteCode.RETURN);
+        cfw.stopMethod((short)3); // 3: this + factory + delegee
+    }
+
+    private static void generateSerialCtor(ClassFileWriter cfw,
+                                           String adapterName,
+                                           String superName)
+    {
+        cfw.startMethod("<init>",
+                        "(Lorg/mozilla/javascript/ContextFactory;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +")V",
+                        ClassFileWriter.ACC_PUBLIC);
+
+        // Invoke base class constructor
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, superName, "<init>", "()V");
+
+        // Save parameter in instance variable "factory"
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_1);  // first arg: ContextFactory instance
+        cfw.add(ByteCode.PUTFIELD, adapterName, "factory",
+                "Lorg/mozilla/javascript/ContextFactory;");
+
+        // Save parameter in instance variable "delegee"
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_2);  // second arg: Scriptable delegee
+        cfw.add(ByteCode.PUTFIELD, adapterName, "delegee",
+                "Lorg/mozilla/javascript/Scriptable;");
+        // save self
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_3);  // second arg: Scriptable self
+        cfw.add(ByteCode.PUTFIELD, adapterName, "self",
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        cfw.add(ByteCode.RETURN);
+        cfw.stopMethod((short)4); // 4: this + factory + delegee + self
+    }
+
+    private static void generateEmptyCtor(ClassFileWriter cfw,
+                                          String adapterName,
+                                          String superName,
+                                          String scriptClassName)
+    {
+        cfw.startMethod("<init>", "()V", ClassFileWriter.ACC_PUBLIC);
+
+        // Invoke base class constructor
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, superName, "<init>", "()V");
+
+        // Set factory to null to use current global when necessary
+        cfw.add(ByteCode.ALOAD_0);
+        cfw.add(ByteCode.ACONST_NULL);
+        cfw.add(ByteCode.PUTFIELD, adapterName, "factory",
+                "Lorg/mozilla/javascript/ContextFactory;");
+
+        // Load script class
+        cfw.add(ByteCode.NEW, scriptClassName);
+        cfw.add(ByteCode.DUP);
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, scriptClassName, "<init>", "()V");
+
+        // Run script and save resulting scope
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/JavaAdapter",
+                      "runScript",
+                      "(Lorg/mozilla/javascript/Script;"
+                      +")Lorg/mozilla/javascript/Scriptable;");
+        cfw.add(ByteCode.ASTORE_1);
+
+        // Save the Scriptable in instance variable "delegee"
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.add(ByteCode.ALOAD_1);  // the Scriptable
+        cfw.add(ByteCode.PUTFIELD, adapterName, "delegee",
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        cfw.add(ByteCode.ALOAD_0);  // this for the following PUTFIELD for self
+        // create a wrapper object to be used as "this" in method calls
+        cfw.add(ByteCode.ALOAD_1);  // the Scriptable
+        cfw.add(ByteCode.ALOAD_0);  // this
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/JavaAdapter",
+                      "createAdapterWrapper",
+                      "(Lorg/mozilla/javascript/Scriptable;"
+                      +"Ljava/lang/Object;"
+                      +")Lorg/mozilla/javascript/Scriptable;");
+        cfw.add(ByteCode.PUTFIELD, adapterName, "self",
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        cfw.add(ByteCode.RETURN);
+        cfw.stopMethod((short)2); // this + delegee
+    }
+
+    /**
+     * Generates code to wrap Java arguments into Object[].
+     * Non-primitive Java types are left as-is pending conversion
+     * in the helper method. Leaves the array object on the top of the stack.
+     */
+    static void generatePushWrappedArgs(ClassFileWriter cfw,
+                                        Class[] argTypes,
+                                        int arrayLength)
+    {
+        // push arguments
+        cfw.addPush(arrayLength);
+        cfw.add(ByteCode.ANEWARRAY, "java/lang/Object");
+        int paramOffset = 1;
+        for (int i = 0; i != argTypes.length; ++i) {
+            cfw.add(ByteCode.DUP); // duplicate array reference
+            cfw.addPush(i);
+            paramOffset += generateWrapArg(cfw, paramOffset, argTypes[i]);
+            cfw.add(ByteCode.AASTORE);
+        }
+    }
+
+    /**
+     * Generates code to wrap Java argument into Object.
+     * Non-primitive Java types are left unconverted pending conversion
+     * in the helper method. Leaves the wrapper object on the top of the stack.
+     */
+    private static int generateWrapArg(ClassFileWriter cfw, int paramOffset,
+                                       Class argType)
+    {
+        int size = 1;
+        if (!argType.isPrimitive()) {
+            cfw.add(ByteCode.ALOAD, paramOffset);
+
+        } else if (argType == Boolean.TYPE) {
+            // wrap boolean values with java.lang.Boolean.
+            cfw.add(ByteCode.NEW, "java/lang/Boolean");
+            cfw.add(ByteCode.DUP);
+            cfw.add(ByteCode.ILOAD, paramOffset);
+            cfw.addInvoke(ByteCode.INVOKESPECIAL, "java/lang/Boolean",
+                          "<init>", "(Z)V");
+
+        } else if (argType == Character.TYPE) {
+            // Create a string of length 1 using the character parameter.
+            cfw.add(ByteCode.ILOAD, paramOffset);
+            cfw.addInvoke(ByteCode.INVOKESTATIC, "java/lang/String",
+                          "valueOf", "(C)Ljava/lang/String;");
+
+        } else {
+            // convert all numeric values to java.lang.Double.
+            cfw.add(ByteCode.NEW, "java/lang/Double");
+            cfw.add(ByteCode.DUP);
+            String typeName = argType.getName();
+            switch (typeName.charAt(0)) {
+            case 'b':
+            case 's':
+            case 'i':
+                // load an int value, convert to double.
+                cfw.add(ByteCode.ILOAD, paramOffset);
+                cfw.add(ByteCode.I2D);
+                break;
+            case 'l':
+                // load a long, convert to double.
+                cfw.add(ByteCode.LLOAD, paramOffset);
+                cfw.add(ByteCode.L2D);
+                size = 2;
+                break;
+            case 'f':
+                // load a float, convert to double.
+                cfw.add(ByteCode.FLOAD, paramOffset);
+                cfw.add(ByteCode.F2D);
+                break;
+            case 'd':
+                cfw.add(ByteCode.DLOAD, paramOffset);
+                size = 2;
+                break;
+            }
+            cfw.addInvoke(ByteCode.INVOKESPECIAL, "java/lang/Double",
+                          "<init>", "(D)V");
+        }
+        return size;
+    }
+
+    /**
+     * Generates code to convert a wrapped value type to a primitive type.
+     * Handles unwrapping java.lang.Boolean, and java.lang.Number types.
+     * Generates the appropriate RETURN bytecode.
+     */
+    static void generateReturnResult(ClassFileWriter cfw, Class retType,
+                                     boolean callConvertResult)
+    {
+        // wrap boolean values with java.lang.Boolean, convert all other
+        // primitive values to java.lang.Double.
+        if (retType == Void.TYPE) {
+            cfw.add(ByteCode.POP);
+            cfw.add(ByteCode.RETURN);
+
+        } else if (retType == Boolean.TYPE) {
+            cfw.addInvoke(ByteCode.INVOKESTATIC,
+                          "org/mozilla/javascript/Context",
+                          "toBoolean", "(Ljava/lang/Object;)Z");
+            cfw.add(ByteCode.IRETURN);
+
+        } else if (retType == Character.TYPE) {
+            // characters are represented as strings in JavaScript.
+            // return the first character.
+            // first convert the value to a string if possible.
+            cfw.addInvoke(ByteCode.INVOKESTATIC,
+                          "org/mozilla/javascript/Context",
+                          "toString",
+                          "(Ljava/lang/Object;)Ljava/lang/String;");
+            cfw.add(ByteCode.ICONST_0);
+            cfw.addInvoke(ByteCode.INVOKEVIRTUAL, "java/lang/String",
+                          "charAt", "(I)C");
+            cfw.add(ByteCode.IRETURN);
+
+        } else if (retType.isPrimitive()) {
+            cfw.addInvoke(ByteCode.INVOKESTATIC,
+                          "org/mozilla/javascript/Context",
+                          "toNumber", "(Ljava/lang/Object;)D");
+            String typeName = retType.getName();
+            switch (typeName.charAt(0)) {
+            case 'b':
+            case 's':
+            case 'i':
+                cfw.add(ByteCode.D2I);
+                cfw.add(ByteCode.IRETURN);
+                break;
+            case 'l':
+                cfw.add(ByteCode.D2L);
+                cfw.add(ByteCode.LRETURN);
+                break;
+            case 'f':
+                cfw.add(ByteCode.D2F);
+                cfw.add(ByteCode.FRETURN);
+                break;
+            case 'd':
+                cfw.add(ByteCode.DRETURN);
+                break;
+            default:
+                throw new RuntimeException("Unexpected return type " +
+                                           retType.toString());
+            }
+
+        } else {
+            String retTypeStr = retType.getName();
+            if (callConvertResult) {
+                cfw.addLoadConstant(retTypeStr);
+                cfw.addInvoke(ByteCode.INVOKESTATIC,
+                              "java/lang/Class",
+                              "forName",
+                              "(Ljava/lang/String;)Ljava/lang/Class;");
+
+                cfw.addInvoke(ByteCode.INVOKESTATIC,
+                              "org/mozilla/javascript/JavaAdapter",
+                              "convertResult",
+                              "(Ljava/lang/Object;"
+                              +"Ljava/lang/Class;"
+                              +")Ljava/lang/Object;");
+            }
+            // Now cast to return type
+            cfw.add(ByteCode.CHECKCAST, retTypeStr);
+            cfw.add(ByteCode.ARETURN);
+        }
+    }
+
+    private static void generateMethod(ClassFileWriter cfw, String genName,
+                                       String methodName, Class[] parms,
+                                       Class returnType)
+    {
+        StringBuffer sb = new StringBuffer();
+        int paramsEnd = appendMethodSignature(parms, returnType, sb);
+        String methodSignature = sb.toString();
+        cfw.startMethod(methodName, methodSignature,
+                        ClassFileWriter.ACC_PUBLIC);
+
+        // Prepare stack to call method
+
+        // push factory
+        cfw.add(ByteCode.ALOAD_0);
+        cfw.add(ByteCode.GETFIELD, genName, "factory",
+                "Lorg/mozilla/javascript/ContextFactory;");
+
+        // push self
+        cfw.add(ByteCode.ALOAD_0);
+        cfw.add(ByteCode.GETFIELD, genName, "self",
+                "Lorg/mozilla/javascript/Scriptable;");
+
+        // push function
+        cfw.add(ByteCode.ALOAD_0);
+        cfw.add(ByteCode.GETFIELD, genName, "delegee",
+                "Lorg/mozilla/javascript/Scriptable;");
+        cfw.addPush(methodName);
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/JavaAdapter",
+                      "getFunction",
+                      "(Lorg/mozilla/javascript/Scriptable;"
+                      +"Ljava/lang/String;"
+                      +")Lorg/mozilla/javascript/Function;");
+
+        // push arguments
+        generatePushWrappedArgs(cfw, parms, parms.length);
+
+        // push bits to indicate which parameters should be wrapped
+        if (parms.length > 64) {
+            // If it will be an issue, then passing a static boolean array
+            // can be an option, but for now using simple bitmask
+            throw Context.reportRuntimeError0(
+                "JavaAdapter can not subclass methods with more then"
+                +" 64 arguments.");
+        }
+        long convertionMask = 0;
+        for (int i = 0; i != parms.length; ++i) {
+            if (!parms[i].isPrimitive()) {
+                convertionMask |= (1 << i);
+            }
+        }
+        cfw.addPush(convertionMask);
+
+        // go through utility method, which creates a Context to run the
+        // method in.
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/JavaAdapter",
+                      "callMethod",
+                      "(Lorg/mozilla/javascript/ContextFactory;"
+                      +"Lorg/mozilla/javascript/Scriptable;"
+                      +"Lorg/mozilla/javascript/Function;"
+                      +"[Ljava/lang/Object;"
+                      +"J"
+                      +")Ljava/lang/Object;");
+
+        generateReturnResult(cfw, returnType, true);
+
+        cfw.stopMethod((short)paramsEnd);
+    }
+
+    /**
+     * Generates code to push typed parameters onto the operand stack
+     * prior to a direct Java method call.
+     */
+    private static int generatePushParam(ClassFileWriter cfw, int paramOffset,
+                                         Class paramType)
+    {
+        if (!paramType.isPrimitive()) {
+            cfw.addALoad(paramOffset);
+            return 1;
+        }
+        String typeName = paramType.getName();
+        switch (typeName.charAt(0)) {
+        case 'z':
+        case 'b':
+        case 'c':
+        case 's':
+        case 'i':
+            // load an int value, convert to double.
+            cfw.addILoad(paramOffset);
+            return 1;
+        case 'l':
+            // load a long, convert to double.
+            cfw.addLLoad(paramOffset);
+            return 2;
+        case 'f':
+            // load a float, convert to double.
+            cfw.addFLoad(paramOffset);
+            return 1;
+        case 'd':
+            cfw.addDLoad(paramOffset);
+            return 2;
+        }
+        throw Kit.codeBug();
+    }
+
+    /**
+     * Generates code to return a Java type, after calling a Java method
+     * that returns the same type.
+     * Generates the appropriate RETURN bytecode.
+     */
+    private static void generatePopResult(ClassFileWriter cfw,
+                                          Class retType)
+    {
+        if (retType.isPrimitive()) {
+            String typeName = retType.getName();
+            switch (typeName.charAt(0)) {
+            case 'b':
+            case 'c':
+            case 's':
+            case 'i':
+            case 'z':
+                cfw.add(ByteCode.IRETURN);
+                break;
+            case 'l':
+                cfw.add(ByteCode.LRETURN);
+                break;
+            case 'f':
+                cfw.add(ByteCode.FRETURN);
+                break;
+            case 'd':
+                cfw.add(ByteCode.DRETURN);
+                break;
+            }
+        } else {
+            cfw.add(ByteCode.ARETURN);
+        }
+    }
+
+    /**
+     * Generates a method called "super$methodName()" which can be called
+     * from JavaScript that is equivalent to calling "super.methodName()"
+     * from Java. Eventually, this may be supported directly in JavaScript.
+     */
+    private static void generateSuper(ClassFileWriter cfw,
+                                      String genName, String superName,
+                                      String methodName, String methodSignature,
+                                      Class[] parms, Class returnType)
+    {
+        cfw.startMethod("super$" + methodName, methodSignature,
+                        ClassFileWriter.ACC_PUBLIC);
+
+        // push "this"
+        cfw.add(ByteCode.ALOAD, 0);
+
+        // push the rest of the parameters.
+        int paramOffset = 1;
+        for (int i = 0; i < parms.length; i++) {
+            paramOffset += generatePushParam(cfw, paramOffset, parms[i]);
+        }
+
+        // call the superclass implementation of the method.
+        cfw.addInvoke(ByteCode.INVOKESPECIAL,
+                      superName,
+                      methodName,
+                      methodSignature);
+
+        // now, handle the return type appropriately.
+        Class retType = returnType;
+        if (!retType.equals(Void.TYPE)) {
+            generatePopResult(cfw, retType);
+        } else {
+            cfw.add(ByteCode.RETURN);
+        }
+        cfw.stopMethod((short)(paramOffset + 1));
+    }
+
+    /**
+     * Returns a fully qualified method name concatenated with its signature.
+     */
+    private static String getMethodSignature(Method method, Class[] argTypes)
+    {
+        StringBuffer sb = new StringBuffer();
+        appendMethodSignature(argTypes, method.getReturnType(), sb);
+        return sb.toString();
+    }
+
+    static int appendMethodSignature(Class[] argTypes,
+                                     Class returnType,
+                                     StringBuffer sb)
+    {
+        sb.append('(');
+        int firstLocal = 1 + argTypes.length; // includes this.
+        for (int i = 0; i < argTypes.length; i++) {
+            Class type = argTypes[i];
+            appendTypeString(sb, type);
+            if (type == Long.TYPE || type == Double.TYPE) {
+                // adjust for duble slot
+                ++firstLocal;
+            }
+        }
+        sb.append(')');
+        appendTypeString(sb, returnType);
+        return firstLocal;
+    }
+
+    private static StringBuffer appendTypeString(StringBuffer sb, Class type)
+    {
+        while (type.isArray()) {
+            sb.append('[');
+            type = type.getComponentType();
+        }
+        if (type.isPrimitive()) {
+            char typeLetter;
+            if (type == Boolean.TYPE) {
+                typeLetter = 'Z';
+            } else if (type == Long.TYPE) {
+                typeLetter = 'J';
+            } else {
+                String typeName = type.getName();
+                typeLetter = Character.toUpperCase(typeName.charAt(0));
+            }
+            sb.append(typeLetter);
+        } else {
+            sb.append('L');
+            sb.append(type.getName().replace('.', '/'));
+            sb.append(';');
+        }
+        return sb;
+    }
+
+    static int[] getArgsToConvert(Class[] argTypes)
+    {
+        int count = 0;
+        for (int i = 0; i != argTypes.length; ++i) {
+            if (!argTypes[i].isPrimitive())
+                ++count;
+        }
+        if (count == 0)
+            return null;
+        int[] array = new int[count];
+        count = 0;
+        for (int i = 0; i != argTypes.length; ++i) {
+            if (!argTypes[i].isPrimitive())
+                array[count++] = i;
+        }
+        return array;
+    }
+
+    private static final Object FTAG = new Object();
+    private static final int Id_JavaAdapter = 1;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaMembers.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaMembers.java
new file mode 100644
index 0000000..84ef2d4
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaMembers.java
@@ -0,0 +1,935 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Cameron McCormack
+ *   Frank Mitchell
+ *   Mike Shaver
+ *   Kurt Westerfeld
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.*;
+import java.util.*;
+
+/**
+ *
+ * @author Mike Shaver
+ * @author Norris Boyd
+ * @see NativeJavaObject
+ * @see NativeJavaClass
+ */
+class JavaMembers
+{
+    JavaMembers(Scriptable scope, Class cl)
+    {
+        this(scope, cl, false);
+    }
+
+    JavaMembers(Scriptable scope, Class cl, boolean includeProtected)
+    {
+        try {
+            Context cx = ContextFactory.getGlobal().enterContext();
+            ClassShutter shutter = cx.getClassShutter();
+            if (shutter != null && !shutter.visibleToScripts(cl.getName())) {
+                throw Context.reportRuntimeError1("msg.access.prohibited",
+                                                  cl.getName());
+            }
+            this.includePrivate = cx.hasFeature(
+                Context.FEATURE_ENHANCED_JAVA_ACCESS);
+            this.members = new Hashtable(23);
+            this.staticMembers = new Hashtable(7);
+            this.cl = cl;
+            reflect(scope, includeProtected);
+        } finally {
+            Context.exit();
+        }
+    }
+
+    boolean has(String name, boolean isStatic)
+    {
+        Hashtable ht = isStatic ? staticMembers : members;
+        Object obj = ht.get(name);
+        if (obj != null) {
+            return true;
+        }
+        return findExplicitFunction(name, isStatic) != null;
+    }
+
+    Object get(Scriptable scope, String name, Object javaObject,
+               boolean isStatic)
+    {
+        Hashtable ht = isStatic ? staticMembers : members;
+        Object member = ht.get(name);
+        if (!isStatic && member == null) {
+            // Try to get static member from instance (LC3)
+            member = staticMembers.get(name);
+        }
+        if (member == null) {
+            member = this.getExplicitFunction(scope, name,
+                                              javaObject, isStatic);
+            if (member == null)
+                return Scriptable.NOT_FOUND;
+        }
+        if (member instanceof Scriptable) {
+            return member;
+        }
+        Context cx = Context.getContext();
+        Object rval;
+        Class type;
+        try {
+            if (member instanceof BeanProperty) {
+                BeanProperty bp = (BeanProperty) member;
+                if (bp.getter == null)
+                    return Scriptable.NOT_FOUND;
+                rval = bp.getter.invoke(javaObject, Context.emptyArgs);
+                type = bp.getter.method().getReturnType();
+            } else {
+                Field field = (Field) member;
+                rval = field.get(isStatic ? null : javaObject);
+                type = field.getType();
+            }
+        } catch (Exception ex) {
+            throw Context.throwAsScriptRuntimeEx(ex);
+        }
+        // Need to wrap the object before we return it.
+        scope = ScriptableObject.getTopLevelScope(scope);
+        return cx.getWrapFactory().wrap(cx, scope, rval, type);
+    }
+
+    void put(Scriptable scope, String name, Object javaObject,
+             Object value, boolean isStatic)
+    {
+        Hashtable ht = isStatic ? staticMembers : members;
+        Object member = ht.get(name);
+        if (!isStatic && member == null) {
+            // Try to get static member from instance (LC3)
+            member = staticMembers.get(name);
+        }
+        if (member == null)
+            throw reportMemberNotFound(name);
+        if (member instanceof FieldAndMethods) {
+            FieldAndMethods fam = (FieldAndMethods) ht.get(name);
+            member = fam.field;
+        }
+
+        // Is this a bean property "set"?
+        if (member instanceof BeanProperty) {
+            BeanProperty bp = (BeanProperty)member;
+            if (bp.setter == null) {
+                throw reportMemberNotFound(name);
+            }
+            // If there's only one setter or if the value is null, use the
+            // main setter. Otherwise, let the NativeJavaMethod decide which
+            // setter to use:
+            if (bp.setters == null || value == null) {
+                Class setType = bp.setter.argTypes[0];
+                Object[] args = { Context.jsToJava(value, setType) };
+                try {
+                    bp.setter.invoke(javaObject, args);
+                } catch (Exception ex) {
+                  throw Context.throwAsScriptRuntimeEx(ex);
+                }
+            } else {
+                Object[] args = { value };
+                bp.setters.call(Context.getContext(),
+                                ScriptableObject.getTopLevelScope(scope),
+                                scope, args);
+            }
+        }
+        else {
+            if (!(member instanceof Field)) {
+                String str = (member == null) ? "msg.java.internal.private"
+                                              : "msg.java.method.assign";
+                throw Context.reportRuntimeError1(str, name);
+            }
+            Field field = (Field)member;
+            Object javaValue = Context.jsToJava(value, field.getType());
+            try {
+                field.set(javaObject, javaValue);
+            } catch (IllegalAccessException accessEx) {
+                if ((field.getModifiers() & Modifier.FINAL) != 0) {
+                    // treat Java final the same as JavaScript [[READONLY]]
+                    return;
+                }
+                throw Context.throwAsScriptRuntimeEx(accessEx);
+            } catch (IllegalArgumentException argEx) {
+                throw Context.reportRuntimeError3(
+                    "msg.java.internal.field.type",
+                    value.getClass().getName(), field,
+                    javaObject.getClass().getName());
+            }
+        }
+    }
+
+    Object[] getIds(boolean isStatic)
+    {
+        Hashtable ht = isStatic ? staticMembers : members;
+        int len = ht.size();
+        Object[] result = new Object[len];
+        Enumeration keys = ht.keys();
+        for (int i=0; i < len; i++)
+            result[i] = keys.nextElement();
+        return result;
+    }
+
+    static String javaSignature(Class type)
+    {
+        if (!type.isArray()) {
+            return type.getName();
+        } else {
+            int arrayDimension = 0;
+            do {
+                ++arrayDimension;
+                type = type.getComponentType();
+            } while (type.isArray());
+            String name = type.getName();
+            String suffix = "[]";
+            if (arrayDimension == 1) {
+                return name.concat(suffix);
+            } else {
+                int length = name.length() + arrayDimension * suffix.length();
+                StringBuffer sb = new StringBuffer(length);
+                sb.append(name);
+                while (arrayDimension != 0) {
+                    --arrayDimension;
+                    sb.append(suffix);
+                }
+                return sb.toString();
+            }
+        }
+    }
+
+    static String liveConnectSignature(Class[] argTypes)
+    {
+        int N = argTypes.length;
+        if (N == 0) { return "()"; }
+        StringBuffer sb = new StringBuffer();
+        sb.append('(');
+        for (int i = 0; i != N; ++i) {
+            if (i != 0) {
+                sb.append(',');
+            }
+            sb.append(javaSignature(argTypes[i]));
+        }
+        sb.append(')');
+        return sb.toString();
+    }
+
+    private MemberBox findExplicitFunction(String name, boolean isStatic)
+    {
+        int sigStart = name.indexOf('(');
+        if (sigStart < 0) { return null; }
+
+        Hashtable ht = isStatic ? staticMembers : members;
+        MemberBox[] methodsOrCtors = null;
+        boolean isCtor = (isStatic && sigStart == 0);
+
+        if (isCtor) {
+            // Explicit request for an overloaded constructor
+            methodsOrCtors = ctors;
+        } else {
+            // Explicit request for an overloaded method
+            String trueName = name.substring(0,sigStart);
+            Object obj = ht.get(trueName);
+            if (!isStatic && obj == null) {
+                // Try to get static member from instance (LC3)
+                obj = staticMembers.get(trueName);
+            }
+            if (obj instanceof NativeJavaMethod) {
+                NativeJavaMethod njm = (NativeJavaMethod)obj;
+                methodsOrCtors = njm.methods;
+            }
+        }
+
+        if (methodsOrCtors != null) {
+            for (int i = 0; i < methodsOrCtors.length; i++) {
+                Class[] type = methodsOrCtors[i].argTypes;
+                String sig = liveConnectSignature(type);
+                if (sigStart + sig.length() == name.length()
+                    && name.regionMatches(sigStart, sig, 0, sig.length()))
+                {
+                    return methodsOrCtors[i];
+                }
+            }
+        }
+
+        return null;
+    }
+
+    private Object getExplicitFunction(Scriptable scope, String name,
+                                       Object javaObject, boolean isStatic)
+    {
+        Hashtable ht = isStatic ? staticMembers : members;
+        Object member = null;
+        MemberBox methodOrCtor = findExplicitFunction(name, isStatic);
+
+        if (methodOrCtor != null) {
+            Scriptable prototype =
+                ScriptableObject.getFunctionPrototype(scope);
+
+            if (methodOrCtor.isCtor()) {
+                NativeJavaConstructor fun =
+                    new NativeJavaConstructor(methodOrCtor);
+                fun.setPrototype(prototype);
+                member = fun;
+                ht.put(name, fun);
+            } else {
+                String trueName = methodOrCtor.getName();
+                member = ht.get(trueName);
+
+                if (member instanceof NativeJavaMethod &&
+                    ((NativeJavaMethod)member).methods.length > 1 ) {
+                    NativeJavaMethod fun =
+                        new NativeJavaMethod(methodOrCtor, name);
+                    fun.setPrototype(prototype);
+                    ht.put(name, fun);
+                    member = fun;
+                }
+            }
+        }
+
+        return member;
+    }
+
+    /**
+     * Retrieves mapping of methods to accessible methods for a class.
+     * In case the class is not public, retrieves methods with same 
+     * signature as its public methods from public superclasses and 
+     * interfaces (if they exist). Basically upcasts every method to the 
+     * nearest accessible method.
+     */
+    private static Method[] discoverAccessibleMethods(Class clazz, 
+                                                      boolean includeProtected,
+                                                      boolean includePrivate)
+    {
+        Map map = new HashMap();
+        discoverAccessibleMethods(clazz, map, includeProtected, includePrivate);
+        return (Method[])map.values().toArray(new Method[map.size()]);
+    }
+    
+    private static void discoverAccessibleMethods(Class clazz, Map map,
+                                                  boolean includeProtected,
+                                                  boolean includePrivate)
+    {
+        if (Modifier.isPublic(clazz.getModifiers()) || includePrivate) {
+            try {
+                if (includeProtected || includePrivate) {
+                    while (clazz != null) {
+                        try {
+                            Method[] methods = clazz.getDeclaredMethods();
+                            for (int i = 0; i < methods.length; i++) {
+                                Method method = methods[i];
+                                int mods = method.getModifiers();
+    
+                                if (Modifier.isPublic(mods) ||
+                                    Modifier.isProtected(mods) ||
+                                    includePrivate)
+                                {
+                                    if (includePrivate)
+                                        method.setAccessible(true);
+                                    map.put(new MethodSignature(method), method);
+                                }
+                            }
+                            clazz = clazz.getSuperclass();
+                        } catch (SecurityException e) {
+                            // Some security settings (i.e., applets) disallow
+                            // access to Class.getDeclaredMethods. Fall back to
+                            // Class.getMethods.
+                            Method[] methods = clazz.getMethods();
+                            for (int i = 0; i < methods.length; i++) {
+                                Method method = methods[i];
+                                MethodSignature sig 
+                                    = new MethodSignature(method);
+                                if (map.get(sig) == null)
+                                    map.put(sig, method);
+                            }
+                            break; // getMethods gets superclass methods, no
+                                   // need to loop any more
+                        }
+                    }
+                } else {
+                    Method[] methods = clazz.getMethods();
+                    for (int i = 0; i < methods.length; i++) {
+                        Method method = methods[i];
+                        MethodSignature sig = new MethodSignature(method);
+                        map.put(sig, method);
+                    }
+                }
+                return;
+            } catch (SecurityException e) {
+                Context.reportWarning(
+                        "Could not discover accessible methods of class " +
+                            clazz.getName() + " due to lack of privileges, " +
+                            "attemping superclasses/interfaces.");
+                // Fall through and attempt to discover superclass/interface
+                // methods
+            }
+        }
+
+        Class[] interfaces = clazz.getInterfaces();
+        for (int i = 0; i < interfaces.length; i++) {
+            discoverAccessibleMethods(interfaces[i], map, includeProtected,
+                    includePrivate);
+        }
+        Class superclass = clazz.getSuperclass();
+        if (superclass != null) {
+            discoverAccessibleMethods(superclass, map, includeProtected,
+                    includePrivate);
+        }
+    }
+
+    private static final class MethodSignature
+    {
+        private final String name;
+        private final Class[] args;
+        
+        private MethodSignature(String name, Class[] args)
+        {
+            this.name = name;
+            this.args = args;
+        }
+        
+        MethodSignature(Method method)
+        {
+            this(method.getName(), method.getParameterTypes());
+        }
+        
+        public boolean equals(Object o)
+        {
+            if(o instanceof MethodSignature)
+            {
+                MethodSignature ms = (MethodSignature)o;
+                return ms.name.equals(name) && Arrays.equals(args, ms.args);
+            }
+            return false;
+        }
+        
+        public int hashCode()
+        {
+            return name.hashCode() ^ args.length;
+        }
+    }
+    
+    private void reflect(Scriptable scope, boolean includeProtected)
+    {
+        // We reflect methods first, because we want overloaded field/method
+        // names to be allocated to the NativeJavaMethod before the field
+        // gets in the way.
+
+        Method[] methods = discoverAccessibleMethods(cl, includeProtected,
+                                                     includePrivate);
+        for (int i = 0; i < methods.length; i++) {
+            Method method = methods[i];
+            int mods = method.getModifiers();
+            boolean isStatic = Modifier.isStatic(mods);
+            Hashtable ht = isStatic ? staticMembers : members;
+            String name = method.getName();
+            Object value = ht.get(name);
+            if (value == null) {
+                ht.put(name, method);
+            } else {
+                ObjArray overloadedMethods;
+                if (value instanceof ObjArray) {
+                    overloadedMethods = (ObjArray)value;
+                } else {
+                    if (!(value instanceof Method)) Kit.codeBug();
+                    // value should be instance of Method as at this stage
+                    // staticMembers and members can only contain methods
+                    overloadedMethods = new ObjArray();
+                    overloadedMethods.add(value);
+                    ht.put(name, overloadedMethods);
+                }
+                overloadedMethods.add(method);
+            }
+        }
+
+        // replace Method instances by wrapped NativeJavaMethod objects
+        // first in staticMembers and then in members
+        for (int tableCursor = 0; tableCursor != 2; ++tableCursor) {
+            boolean isStatic = (tableCursor == 0);
+            Hashtable ht = (isStatic) ? staticMembers : members;
+            Enumeration e = ht.keys();
+            while (e.hasMoreElements()) {
+                String name = (String)e.nextElement();
+                MemberBox[] methodBoxes;
+                Object value = ht.get(name);
+                if (value instanceof Method) {
+                    methodBoxes = new MemberBox[1];
+                    methodBoxes[0] = new MemberBox((Method)value);
+                } else {
+                    ObjArray overloadedMethods = (ObjArray)value;
+                    int N = overloadedMethods.size();
+                    if (N < 2) Kit.codeBug();
+                    methodBoxes = new MemberBox[N];
+                    for (int i = 0; i != N; ++i) {
+                        Method method = (Method)overloadedMethods.get(i);
+                        methodBoxes[i] = new MemberBox(method);
+                    }
+                }
+                NativeJavaMethod fun = new NativeJavaMethod(methodBoxes);
+                if (scope != null) {
+                    ScriptRuntime.setFunctionProtoAndParent(fun, scope);
+                }
+                ht.put(name, fun);
+            }
+        }
+
+        // Reflect fields.
+        Field[] fields = getAccessibleFields();
+        for (int i = 0; i < fields.length; i++) {
+            Field field = fields[i];
+            String name = field.getName();
+            int mods = field.getModifiers();
+            if (!includePrivate && !Modifier.isPublic(mods)) {
+                continue;
+            }
+            try {
+                boolean isStatic = Modifier.isStatic(mods);
+                Hashtable ht = isStatic ? staticMembers : members;
+                Object member = ht.get(name);
+                if (member == null) {
+                    ht.put(name, field);
+                } else if (member instanceof NativeJavaMethod) {
+                    NativeJavaMethod method = (NativeJavaMethod) member;
+                    FieldAndMethods fam
+                        = new FieldAndMethods(scope, method.methods, field);
+                    Hashtable fmht = isStatic ? staticFieldAndMethods
+                                              : fieldAndMethods;
+                    if (fmht == null) {
+                        fmht = new Hashtable(4);
+                        if (isStatic) {
+                            staticFieldAndMethods = fmht;
+                        } else {
+                            fieldAndMethods = fmht;
+                        }
+                    }
+                    fmht.put(name, fam);
+                    ht.put(name, fam);
+                } else if (member instanceof Field) {
+                    Field oldField = (Field) member;
+                    // If this newly reflected field shadows an inherited field,
+                    // then replace it. Otherwise, since access to the field
+                    // would be ambiguous from Java, no field should be
+                    // reflected.
+                    // For now, the first field found wins, unless another field
+                    // explicitly shadows it.
+                    if (oldField.getDeclaringClass().
+                            isAssignableFrom(field.getDeclaringClass()))
+                    {
+                        ht.put(name, field);
+                    }
+                } else {
+                    // "unknown member type"
+                    Kit.codeBug();
+                }
+            } catch (SecurityException e) {
+                // skip this field
+                Context.reportWarning("Could not access field "
+                        + name + " of class " + cl.getName() +
+                        " due to lack of privileges.");
+            }
+        }
+
+        // Create bean propeties from corresponding get/set methods first for
+        // static members and then for instance members
+        for (int tableCursor = 0; tableCursor != 2; ++tableCursor) {
+            boolean isStatic = (tableCursor == 0);
+            Hashtable ht = (isStatic) ? staticMembers : members;
+
+            Hashtable toAdd = new Hashtable();
+
+            // Now, For each member, make "bean" properties.
+            for (Enumeration e = ht.keys(); e.hasMoreElements(); ) {
+
+                // Is this a getter?
+                String name = (String) e.nextElement();
+                boolean memberIsGetMethod = name.startsWith("get");
+                boolean memberIsSetMethod = name.startsWith("set");
+                boolean memberIsIsMethod = name.startsWith("is");
+                if (memberIsGetMethod || memberIsIsMethod 
+                        || memberIsSetMethod) {
+                    // Double check name component.
+                    String nameComponent
+                        = name.substring(memberIsIsMethod ? 2 : 3);
+                    if (nameComponent.length() == 0)
+                        continue;
+
+                    // Make the bean property name.
+                    String beanPropertyName = nameComponent;
+                    char ch0 = nameComponent.charAt(0);
+                    if (Character.isUpperCase(ch0)) {
+                        if (nameComponent.length() == 1) {
+                            beanPropertyName = nameComponent.toLowerCase();
+                        } else {
+                            char ch1 = nameComponent.charAt(1);
+                            if (!Character.isUpperCase(ch1)) {
+                                beanPropertyName = Character.toLowerCase(ch0)
+                                                   +nameComponent.substring(1);
+                            }
+                        }
+                    }
+
+                    // If we already have a member by this name, don't do this
+                    // property.
+                    if (ht.containsKey(beanPropertyName)
+                            || toAdd.containsKey(beanPropertyName)) {
+                        continue;
+                    }
+
+                    // Find the getter method, or if there is none, the is-
+                    // method.
+                    MemberBox getter = null;
+                    getter = findGetter(isStatic, ht, "get", nameComponent);
+                    // If there was no valid getter, check for an is- method.
+                    if (getter == null) {
+                        getter = findGetter(isStatic, ht, "is", nameComponent);
+                    }
+
+                    // setter
+                    MemberBox setter = null;
+                    NativeJavaMethod setters = null;
+                    String setterName = "set".concat(nameComponent);
+
+                    if (ht.containsKey(setterName)) {
+                        // Is this value a method?
+                        Object member = ht.get(setterName);
+                        if (member instanceof NativeJavaMethod) {
+                            NativeJavaMethod njmSet = (NativeJavaMethod)member;
+                            if (getter != null) {
+                                // We have a getter. Now, do we have a matching 
+                                // setter?
+                                Class type = getter.method().getReturnType();
+                                setter = extractSetMethod(type, njmSet.methods,
+                                                            isStatic);
+                            } else {
+                                // No getter, find any set method
+                                setter = extractSetMethod(njmSet.methods, 
+                                                            isStatic);
+                            }
+                            if (njmSet.methods.length > 1) {
+                                setters = njmSet;
+                            }
+                        }
+                    }
+                    // Make the property.
+                    BeanProperty bp = new BeanProperty(getter, setter,
+                                                       setters);
+                    toAdd.put(beanPropertyName, bp);
+                }
+            }
+
+            // Add the new bean properties.
+            for (Enumeration e = toAdd.keys(); e.hasMoreElements();) {
+                Object key = e.nextElement();
+                Object value = toAdd.get(key);
+                ht.put(key, value);
+            }
+        }
+
+        // Reflect constructors
+        Constructor[] constructors = getAccessibleConstructors();
+        ctors = new MemberBox[constructors.length];
+        for (int i = 0; i != constructors.length; ++i) {
+            ctors[i] = new MemberBox(constructors[i]);
+        }
+    }
+
+    private Constructor[] getAccessibleConstructors()
+    {
+      // The JVM currently doesn't allow changing access on java.lang.Class
+      // constructors, so don't try
+      if (includePrivate && cl != ScriptRuntime.ClassClass) {
+          try {
+              Constructor[] cons = cl.getDeclaredConstructors();
+              Constructor.setAccessible(cons, true);
+
+              return cons;
+          } catch (SecurityException e) {
+              // Fall through to !includePrivate case
+              Context.reportWarning("Could not access constructor " +
+                    " of class " + cl.getName() +
+                    " due to lack of privileges.");
+          }
+      }
+      return cl.getConstructors();
+    }
+
+    private Field[] getAccessibleFields() {
+        if (includePrivate) {
+            try {
+                ArrayList fieldsList = new ArrayList();
+                Class currentClass = cl;
+
+                while (currentClass != null) {
+                    // get all declared fields in this class, make them
+                    // accessible, and save
+                    Field[] declared = currentClass.getDeclaredFields();
+                    for (int i = 0; i < declared.length; i++) {
+                        declared[i].setAccessible(true);
+                        fieldsList.add(declared[i]);
+                    }
+                    // walk up superclass chain.  no need to deal specially with
+                    // interfaces, since they can't have fields
+                    currentClass = currentClass.getSuperclass();
+                }
+
+                return (Field[]) fieldsList.toArray(
+                        new Field[fieldsList.size()]);
+            } catch (SecurityException e) {
+                // fall through to !includePrivate case
+            }
+        }
+        return cl.getFields();
+    }
+
+    private MemberBox findGetter(boolean isStatic, Hashtable ht, String prefix,
+                                 String propertyName)
+    {
+        String getterName = prefix.concat(propertyName);
+        if (ht.containsKey(getterName)) {
+            // Check that the getter is a method.
+            Object member = ht.get(getterName);
+            if (member instanceof NativeJavaMethod) {
+                NativeJavaMethod njmGet = (NativeJavaMethod) member;
+                return extractGetMethod(njmGet.methods, isStatic);
+            }
+        }
+        return null;
+    }
+
+    private static MemberBox extractGetMethod(MemberBox[] methods,
+                                              boolean isStatic)
+    {
+        // Inspect the list of all MemberBox for the only one having no
+        // parameters
+        for (int methodIdx = 0; methodIdx < methods.length; methodIdx++) {
+            MemberBox method = methods[methodIdx];
+            // Does getter method have an empty parameter list with a return
+            // value (eg. a getSomething() or isSomething())?
+            if (method.argTypes.length == 0
+                && (!isStatic || method.isStatic()))
+            {
+                Class type = method.method().getReturnType();
+                if (type != Void.TYPE) {
+                    return method;
+                }
+                break;
+            }
+        }
+        return null;
+    }
+
+    private static MemberBox extractSetMethod(Class type, MemberBox[] methods,
+                                              boolean isStatic)
+    {
+        //
+        // Note: it may be preferable to allow NativeJavaMethod.findFunction()
+        //       to find the appropriate setter; unfortunately, it requires an
+        //       instance of the target arg to determine that.
+        //
+
+        // Make two passes: one to find a method with direct type assignment,
+        // and one to find a widening conversion.
+        for (int pass = 1; pass <= 2; ++pass) {
+            for (int i = 0; i < methods.length; ++i) {
+                MemberBox method = methods[i];
+                if (!isStatic || method.isStatic()) {
+                    Class[] params = method.argTypes;
+                    if (params.length == 1) {
+                        if (pass == 1) {
+                            if (params[0] == type) {
+                                return method;
+                            }
+                        } else {
+                            if (pass != 2) Kit.codeBug();
+                            if (params[0].isAssignableFrom(type)) {
+                                return method;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    private static MemberBox extractSetMethod(MemberBox[] methods,
+                                              boolean isStatic)
+    {
+
+        for (int i = 0; i < methods.length; ++i) {
+            MemberBox method = methods[i];
+            if (!isStatic || method.isStatic()) {
+                if (method.method().getReturnType() == Void.TYPE) {
+                    if (method.argTypes.length == 1) {
+                        return method;
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    Hashtable getFieldAndMethodsObjects(Scriptable scope, Object javaObject,
+                                        boolean isStatic)
+    {
+        Hashtable ht = isStatic ? staticFieldAndMethods : fieldAndMethods;
+        if (ht == null)
+            return null;
+        int len = ht.size();
+        Hashtable result = new Hashtable(len);
+        Enumeration e = ht.elements();
+        while (len-- > 0) {
+            FieldAndMethods fam = (FieldAndMethods) e.nextElement();
+            FieldAndMethods famNew = new FieldAndMethods(scope, fam.methods,
+                                                         fam.field);
+            famNew.javaObject = javaObject;
+            result.put(fam.field.getName(), famNew);
+        }
+        return result;
+    }
+
+    static JavaMembers lookupClass(Scriptable scope, Class dynamicType,
+                                   Class staticType, boolean includeProtected)
+    {
+        JavaMembers members;
+        scope = ScriptableObject.getTopLevelScope(scope);
+        ClassCache cache = ClassCache.get(scope);
+        Map<Class<?>,JavaMembers> ct = cache.getClassCacheMap();
+
+        Class cl = dynamicType;
+        for (;;) {
+            members = ct.get(cl);
+            if (members != null) {
+                return members;
+            }
+            try {
+                members = new JavaMembers(scope, cl, includeProtected);
+                break;
+            } catch (SecurityException e) {
+                // Reflection may fail for objects that are in a restricted
+                // access package (e.g. sun.*).  If we get a security
+                // exception, try again with the static type if it is interface.
+                // Otherwise, try superclass
+                if (staticType != null && staticType.isInterface()) {
+                    cl = staticType;
+                    staticType = null; // try staticType only once
+                } else {
+                    Class parent = cl.getSuperclass();
+                    if (parent == null) {
+                        if (cl.isInterface()) {
+                            // last resort after failed staticType interface
+                            parent = ScriptRuntime.ObjectClass;
+                        } else {
+                            throw e;
+                        }
+                    }
+                    cl = parent;
+                }
+            }
+        }
+
+        if (cache.isCachingEnabled())
+            ct.put(cl, members);
+        return members;
+    }
+
+    RuntimeException reportMemberNotFound(String memberName)
+    {
+        return Context.reportRuntimeError2(
+            "msg.java.member.not.found", cl.getName(), memberName);
+    }
+
+    private Class cl;
+    private Hashtable members;
+    private Hashtable fieldAndMethods;
+    private Hashtable staticMembers;
+    private Hashtable staticFieldAndMethods;
+    MemberBox[] ctors;
+    private boolean includePrivate;
+}
+
+class BeanProperty
+{
+    BeanProperty(MemberBox getter, MemberBox setter, NativeJavaMethod setters)
+    {
+        this.getter = getter;
+        this.setter = setter;
+        this.setters = setters;
+    }
+
+    MemberBox getter;
+    MemberBox setter;
+    NativeJavaMethod setters;
+}
+
+class FieldAndMethods extends NativeJavaMethod
+{
+    static final long serialVersionUID = -9222428244284796755L;
+
+    FieldAndMethods(Scriptable scope, MemberBox[] methods, Field field)
+    {
+        super(methods);
+        this.field = field;
+        setParentScope(scope);
+        setPrototype(ScriptableObject.getFunctionPrototype(scope));
+    }
+
+    public Object getDefaultValue(Class hint)
+    {
+        if (hint == ScriptRuntime.FunctionClass)
+            return this;
+        Object rval;
+        Class type;
+        try {
+            rval = field.get(javaObject);
+            type = field.getType();
+        } catch (IllegalAccessException accEx) {
+            throw Context.reportRuntimeError1(
+                "msg.java.internal.private", field.getName());
+        }
+        Context cx  = Context.getContext();
+        rval = cx.getWrapFactory().wrap(cx, this, rval, type);
+        if (rval instanceof Scriptable) {
+            rval = ((Scriptable) rval).getDefaultValue(hint);
+        }
+        return rval;
+    }
+
+    Field field;
+    Object javaObject;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaScriptException.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaScriptException.java
new file mode 100644
index 0000000..11ebedf
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/JavaScriptException.java
@@ -0,0 +1,117 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Bojan Cekrlic
+ *   Hannes Wallnoefer
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * Java reflection of JavaScript exceptions.
+ * Instances of this class are thrown by the JavaScript 'throw' keyword.
+ *
+ * @author Mike McCabe
+ */
+public class JavaScriptException extends RhinoException
+{
+    static final long serialVersionUID = -7666130513694669293L;
+
+    /**
+     * @deprecated
+     * Use {@link WrappedException#WrappedException(Throwable)} to report
+     * exceptions in Java code.
+     */
+    public JavaScriptException(Object value)
+    {
+        this(value, "", 0);
+    }
+
+    /**
+     * Create a JavaScript exception wrapping the given JavaScript value
+     *
+     * @param value the JavaScript value thrown.
+     */
+    public JavaScriptException(Object value, String sourceName, int lineNumber)
+    {
+        recordErrorOrigin(sourceName, lineNumber, null, 0);
+        this.value = value;
+    }
+
+    public String details()
+    {
+       try {
+           return ScriptRuntime.toString(value);
+       } catch (RuntimeException rte) {
+           // ScriptRuntime.toString may throw a RuntimeException
+           if (value == null) {
+               return "null";
+           } else if (value instanceof Scriptable) {
+               return ScriptRuntime.defaultObjectToString((Scriptable)value);
+           } else {
+               return value.toString();
+           }
+       }
+    }
+
+    /**
+     * @return the value wrapped by this exception
+     */
+    public Object getValue()
+    {
+        return value;
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#sourceName()} from the super class.
+     */
+    public String getSourceName()
+    {
+        return sourceName();
+    }
+
+    /**
+     * @deprecated Use {@link RhinoException#lineNumber()} from the super class.
+     */
+    public int getLineNumber()
+    {
+        return lineNumber();
+    }
+
+    private Object value;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Kit.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Kit.java
new file mode 100644
index 0000000..f7b4cad
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Kit.java
@@ -0,0 +1,486 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Reader;
+import java.lang.reflect.Method;
+import java.util.Hashtable;
+
+/**
+ * Collection of utilities
+ */
+
+public class Kit
+{
+    /**
+     * Reflection of Throwable.initCause(Throwable) from JDK 1.4
+     * or nul if it is not available.
+     */
+    private static Method Throwable_initCause = null;
+
+    static {
+        // Are we running on a JDK 1.4 or later system?
+        try {
+            Class ThrowableClass = Kit.classOrNull("java.lang.Throwable");
+            Class[] signature = { ThrowableClass };
+            Throwable_initCause
+                = ThrowableClass.getMethod("initCause", signature);
+        } catch (Exception ex) {
+            // Assume any exceptions means the method does not exist.
+        }
+    }
+
+    public static Class classOrNull(String className)
+    {
+        try {
+            return Class.forName(className);
+        } catch  (ClassNotFoundException ex) {
+        } catch  (SecurityException ex) {
+        } catch  (LinkageError ex) {
+        } catch (IllegalArgumentException e) {
+            // Can be thrown if name has characters that a class name
+            // can not contain
+        }
+        return null;
+    }
+
+    public static Class classOrNull(ClassLoader loader, String className)
+    {
+        try {
+            return loader.loadClass(className);
+        } catch (ClassNotFoundException ex) {
+        } catch (SecurityException ex) {
+        } catch  (LinkageError ex) {
+        } catch (IllegalArgumentException e) {
+            // Can be thrown if name has characters that a class name
+            // can not contain
+        }
+        return null;
+    }
+
+    static Object newInstanceOrNull(Class cl)
+    {
+        try {
+            return cl.newInstance();
+        } catch (SecurityException x) {
+        } catch  (LinkageError ex) {
+        } catch (InstantiationException x) {
+        } catch (IllegalAccessException x) {
+        }
+        return null;
+    }
+
+    /**
+     * Check that testClass is accesible from the given loader.
+     */
+    static boolean testIfCanLoadRhinoClasses(ClassLoader loader)
+    {
+        Class testClass = ScriptRuntime.ContextFactoryClass;
+        Class x = Kit.classOrNull(loader, testClass.getName());
+        if (x != testClass) {
+            // The check covers the case when x == null =>
+            // loader does not know about testClass or the case
+            // when x != null && x != testClass =>
+            // loader loads a class unrelated to testClass
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * If initCause methods exists in Throwable, call
+     * <tt>ex.initCause(cause)</tt> or otherwise do nothing.
+     * @return The <tt>ex</tt> argument.
+     */
+    public static RuntimeException initCause(RuntimeException ex,
+                                             Throwable cause)
+    {
+        if (Throwable_initCause != null) {
+            Object[] args = { cause };
+            try {
+                Throwable_initCause.invoke(ex, args);
+            } catch (Exception e) {
+                // Ignore any exceptions
+            }
+        }
+        return ex;
+    }
+
+    /**
+     * Split string into array of strings using semicolon as string terminator
+     * (; after the last string is required).
+     */
+    public static String[] semicolonSplit(String s)
+    {
+        String[] array = null;
+        for (;;) {
+            // loop 2 times: first to count semicolons and then to fill array
+            int count = 0;
+            int cursor = 0;
+            for (;;) {
+                int next = s.indexOf(';', cursor);
+                if (next < 0) {
+                    break;
+                }
+                if (array != null) {
+                    array[count] = s.substring(cursor, next);
+                }
+                ++count;
+                cursor = next + 1;
+            }
+            // after the last semicolon
+            if (array == null) {
+                // array size counting state:
+                // check for required terminating ';'
+                if (cursor != s.length())
+                    throw new IllegalArgumentException();
+                array = new String[count];
+            } else {
+                // array filling state: stop the loop
+                break;
+            }
+        }
+        return array;
+    }
+
+    /**
+     * If character <tt>c</tt> is a hexadecimal digit, return
+     * <tt>accumulator</tt> * 16 plus corresponding
+     * number. Otherise return -1.
+     */
+    public static int xDigitToInt(int c, int accumulator)
+    {
+        check: {
+            // Use 0..9 < A..Z < a..z
+            if (c <= '9') {
+                c -= '0';
+                if (0 <= c) { break check; }
+            } else if (c <= 'F') {
+                if ('A' <= c) {
+                    c -= ('A' - 10);
+                    break check;
+                }
+            } else if (c <= 'f') {
+                if ('a' <= c) {
+                    c -= ('a' - 10);
+                    break check;
+                }
+            }
+            return -1;
+        }
+        return (accumulator << 4) | c;
+    }
+
+    /**
+     * Add <i>listener</i> to <i>bag</i> of listeners.
+     * The function does not modify <i>bag</i> and return a new collection
+     * containing <i>listener</i> and all listeners from <i>bag</i>.
+     * Bag without listeners always represented as the null value.
+     * <p>
+     * Usage example:
+     * <pre>
+     *     private volatile Object changeListeners;
+     *
+     *     public void addMyListener(PropertyChangeListener l)
+     *     {
+     *         synchronized (this) {
+     *             changeListeners = Kit.addListener(changeListeners, l);
+     *         }
+     *     }
+     *
+     *     public void removeTextListener(PropertyChangeListener l)
+     *     {
+     *         synchronized (this) {
+     *             changeListeners = Kit.removeListener(changeListeners, l);
+     *         }
+     *     }
+     *
+     *     public void fireChangeEvent(Object oldValue, Object newValue)
+     *     {
+     *     // Get immune local copy
+     *         Object listeners = changeListeners;
+     *         if (listeners != null) {
+     *             PropertyChangeEvent e = new PropertyChangeEvent(
+     *                 this, "someProperty" oldValue, newValue);
+     *             for (int i = 0; ; ++i) {
+     *                 Object l = Kit.getListener(listeners, i);
+     *                 if (l == null)
+     *                     break;
+     *                 ((PropertyChangeListener)l).propertyChange(e);
+     *             }
+     *         }
+     *     }
+     * </pre>
+     *
+     * @param listener Listener to add to <i>bag</i>
+     * @param bag Current collection of listeners.
+     * @return A new bag containing all listeners from <i>bag</i> and
+     *          <i>listener</i>.
+     * @see #removeListener(Object bag, Object listener)
+     * @see #getListener(Object bag, int index)
+     */
+    public static Object addListener(Object bag, Object listener)
+    {
+        if (listener == null) throw new IllegalArgumentException();
+        if (listener instanceof Object[]) throw new IllegalArgumentException();
+
+        if (bag == null) {
+            bag = listener;
+        } else if (!(bag instanceof Object[])) {
+            bag = new Object[] { bag, listener };
+        } else {
+            Object[] array = (Object[])bag;
+            int L = array.length;
+            // bag has at least 2 elements if it is array
+            if (L < 2) throw new IllegalArgumentException();
+            Object[] tmp = new Object[L + 1];
+            System.arraycopy(array, 0, tmp, 0, L);
+            tmp[L] = listener;
+            bag = tmp;
+        }
+
+        return bag;
+    }
+
+    /**
+     * Remove <i>listener</i> from <i>bag</i> of listeners.
+     * The function does not modify <i>bag</i> and return a new collection
+     * containing all listeners from <i>bag</i> except <i>listener</i>.
+     * If <i>bag</i> does not contain <i>listener</i>, the function returns
+     * <i>bag</i>.
+     * <p>
+     * For usage example, see {@link #addListener(Object bag, Object listener)}.
+     *
+     * @param listener Listener to remove from <i>bag</i>
+     * @param bag Current collection of listeners.
+     * @return A new bag containing all listeners from <i>bag</i> except
+     *          <i>listener</i>.
+     * @see #addListener(Object bag, Object listener)
+     * @see #getListener(Object bag, int index)
+     */
+    public static Object removeListener(Object bag, Object listener)
+    {
+        if (listener == null) throw new IllegalArgumentException();
+        if (listener instanceof Object[]) throw new IllegalArgumentException();
+
+        if (bag == listener) {
+            bag = null;
+        } else if (bag instanceof Object[]) {
+            Object[] array = (Object[])bag;
+            int L = array.length;
+            // bag has at least 2 elements if it is array
+            if (L < 2) throw new IllegalArgumentException();
+            if (L == 2) {
+                if (array[1] == listener) {
+                    bag = array[0];
+                } else if (array[0] == listener) {
+                    bag = array[1];
+                }
+            } else {
+                int i = L;
+                do {
+                    --i;
+                    if (array[i] == listener) {
+                        Object[] tmp = new Object[L - 1];
+                        System.arraycopy(array, 0, tmp, 0, i);
+                        System.arraycopy(array, i + 1, tmp, i, L - (i + 1));
+                        bag = tmp;
+                        break;
+                    }
+                } while (i != 0);
+            }
+        }
+
+        return bag;
+    }
+
+    /**
+     * Get listener at <i>index</i> position in <i>bag</i> or null if
+     * <i>index</i> equals to number of listeners in <i>bag</i>.
+     * <p>
+     * For usage example, see {@link #addListener(Object bag, Object listener)}.
+     *
+     * @param bag Current collection of listeners.
+     * @param index Index of the listener to access.
+     * @return Listener at the given index or null.
+     * @see #addListener(Object bag, Object listener)
+     * @see #removeListener(Object bag, Object listener)
+     */
+    public static Object getListener(Object bag, int index)
+    {
+        if (index == 0) {
+            if (bag == null)
+                return null;
+            if (!(bag instanceof Object[]))
+                return bag;
+            Object[] array = (Object[])bag;
+            // bag has at least 2 elements if it is array
+            if (array.length < 2) throw new IllegalArgumentException();
+            return array[0];
+        } else if (index == 1) {
+            if (!(bag instanceof Object[])) {
+                if (bag == null) throw new IllegalArgumentException();
+                return null;
+            }
+            Object[] array = (Object[])bag;
+            // the array access will check for index on its own
+            return array[1];
+        } else {
+            // bag has to array
+            Object[] array = (Object[])bag;
+            int L = array.length;
+            if (L < 2) throw new IllegalArgumentException();
+            if (index == L)
+                return null;
+            return array[index];
+        }
+    }
+
+    static Object initHash(Hashtable h, Object key, Object initialValue)
+    {
+        synchronized (h) {
+            Object current = h.get(key);
+            if (current == null) {
+                h.put(key, initialValue);
+            } else {
+                initialValue = current;
+            }
+        }
+        return initialValue;
+    }
+
+    private final static class ComplexKey
+    {
+        private Object key1;
+        private Object key2;
+        private int hash;
+
+        ComplexKey(Object key1, Object key2)
+        {
+            this.key1 = key1;
+            this.key2 = key2;
+        }
+
+        public boolean equals(Object anotherObj)
+        {
+            if (!(anotherObj instanceof ComplexKey))
+                return false;
+            ComplexKey another = (ComplexKey)anotherObj;
+            return key1.equals(another.key1) && key2.equals(another.key2);
+        }
+
+        public int hashCode()
+        {
+            if (hash == 0) {
+                hash = key1.hashCode() ^ key2.hashCode();
+            }
+            return hash;
+        }
+    }
+
+    public static Object makeHashKeyFromPair(Object key1, Object key2)
+    {
+        if (key1 == null) throw new IllegalArgumentException();
+        if (key2 == null) throw new IllegalArgumentException();
+        return new ComplexKey(key1, key2);
+    }
+
+    public static String readReader(Reader r)
+        throws IOException
+    {
+        char[] buffer = new char[512];
+        int cursor = 0;
+        for (;;) {
+            int n = r.read(buffer, cursor, buffer.length - cursor);
+            if (n < 0) { break; }
+            cursor += n;
+            if (cursor == buffer.length) {
+                char[] tmp = new char[buffer.length * 2];
+                System.arraycopy(buffer, 0, tmp, 0, cursor);
+                buffer = tmp;
+            }
+        }
+        return new String(buffer, 0, cursor);
+    }
+
+    public static byte[] readStream(InputStream is, int initialBufferCapacity)
+        throws IOException
+    {
+        if (initialBufferCapacity <= 0) {
+            throw new IllegalArgumentException(
+                "Bad initialBufferCapacity: "+initialBufferCapacity);
+        }
+        byte[] buffer = new byte[initialBufferCapacity];
+        int cursor = 0;
+        for (;;) {
+            int n = is.read(buffer, cursor, buffer.length - cursor);
+            if (n < 0) { break; }
+            cursor += n;
+            if (cursor == buffer.length) {
+                byte[] tmp = new byte[buffer.length * 2];
+                System.arraycopy(buffer, 0, tmp, 0, cursor);
+                buffer = tmp;
+            }
+        }
+        if (cursor != buffer.length) {
+            byte[] tmp = new byte[cursor];
+            System.arraycopy(buffer, 0, tmp, 0, cursor);
+            buffer = tmp;
+        }
+        return buffer;
+    }
+
+    /**
+     * Throws RuntimeException to indicate failed assertion.
+     * The function never returns and its return type is RuntimeException
+     * only to be able to write <tt>throw Kit.codeBug()</tt> if plain
+     * <tt>Kit.codeBug()</tt> triggers unreachable code error.
+     */
+    public static RuntimeException codeBug()
+        throws RuntimeException
+    {
+        RuntimeException ex = new IllegalStateException("FAILED ASSERTION");
+        // Print stack trace ASAP
+        ex.printStackTrace(System.err);
+        throw ex;
+    }
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java
new file mode 100644
index 0000000..4153372
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/LazilyLoadedCtor.java
@@ -0,0 +1,136 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.*;
+
+/**
+ * Avoid loading classes unless they are used.
+ *
+ * <p> This improves startup time and average memory usage.
+ */
+public final class LazilyLoadedCtor implements java.io.Serializable {
+	private static final long serialVersionUID = 1L;
+	
+    private static final int STATE_BEFORE_INIT = 0;
+    private static final int STATE_INITIALIZING = 1;
+    private static final int STATE_WITH_VALUE = 2;
+
+    private final ScriptableObject scope;
+    private final String propertyName;
+    private final String className;
+    private final boolean sealed;
+    private Object initializedValue;
+    private int state;
+
+    public LazilyLoadedCtor(ScriptableObject scope, String propertyName,
+                            String className, boolean sealed)
+    {
+
+        this.scope = scope;
+        this.propertyName = propertyName;
+        this.className = className;
+        this.sealed = sealed;
+        this.state = STATE_BEFORE_INIT;
+
+        scope.addLazilyInitializedValue(propertyName, 0, this,
+                                        ScriptableObject.DONTENUM);
+    }
+
+    void init()
+    {
+        synchronized (this) {
+            if (state == STATE_INITIALIZING)
+                throw new IllegalStateException(
+                    "Recursive initialization for "+propertyName);
+            if (state == STATE_BEFORE_INIT) {
+                state = STATE_INITIALIZING;
+                // Set value now to have something to set in finally block if
+                // buildValue throws.
+                Object value = Scriptable.NOT_FOUND;
+                try {
+                    value = buildValue();
+                } finally {
+                    initializedValue = value;
+                    state = STATE_WITH_VALUE;
+                }
+            }
+        }
+    }
+
+    Object getValue()
+    {
+        if (state != STATE_WITH_VALUE)
+            throw new IllegalStateException(propertyName);
+        return initializedValue;
+    }
+
+    private Object buildValue()
+    {
+        Class cl = Kit.classOrNull(className);
+        if (cl != null) {
+            try {
+                Object value = ScriptableObject.buildClassCtor(scope, cl,
+                                                               sealed, false);
+                if (value != null) {
+                    return value;
+                }
+                else {
+                    // cl has own static initializer which is expected
+                    // to set the property on its own.
+                    value = scope.get(propertyName, scope);
+                    if (value != Scriptable.NOT_FOUND)
+                        return value;
+                }
+            } catch (InvocationTargetException ex) {
+                Throwable target = ex.getTargetException();
+                if (target instanceof RuntimeException) {
+                    throw (RuntimeException)target;
+                }
+            } catch (RhinoException ex) {
+            } catch (InstantiationException ex) {
+            } catch (IllegalAccessException ex) {
+            } catch (SecurityException ex) {
+            }
+        }
+        return Scriptable.NOT_FOUND;
+    }
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java
new file mode 100644
index 0000000..2d3553f
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java
@@ -0,0 +1,362 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *   Felix Meschberger
+ *   Norris Boyd
+ *   Ulrike Mueller <umueller@demandware.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.*;
+import java.io.*;
+
+/**
+ * Wrappper class for Method and Constructor instances to cache
+ * getParameterTypes() results, recover from IllegalAccessException
+ * in some cases and provide serialization support.
+ *
+ * @author Igor Bukanov
+ */
+
+final class MemberBox implements Serializable
+{
+    static final long serialVersionUID = 6358550398665688245L;
+
+    private transient Member memberObject;
+    transient Class[] argTypes;
+    transient Object delegateTo;
+    transient boolean vararg;
+
+
+    MemberBox(Method method)
+    {
+        init(method);
+    }
+
+    MemberBox(Constructor constructor)
+    {
+        init(constructor);
+    }
+
+    private void init(Method method)
+    {
+        this.memberObject = method;
+        this.argTypes = method.getParameterTypes();
+        this.vararg = VMBridge.instance.isVarArgs(method);
+    }
+
+    private void init(Constructor constructor)
+    {
+        this.memberObject = constructor;
+        this.argTypes = constructor.getParameterTypes();
+        this.vararg = VMBridge.instance.isVarArgs(constructor);
+    }
+
+    Method method()
+    {
+        return (Method)memberObject;
+    }
+
+    Constructor ctor()
+    {
+        return (Constructor)memberObject;
+    }
+
+    Member member()
+    {
+        return memberObject;
+    }
+
+    boolean isMethod()
+    {
+        return memberObject instanceof Method;
+    }
+
+    boolean isCtor()
+    {
+        return memberObject instanceof Constructor;
+    }
+
+    boolean isStatic()
+    {
+        return Modifier.isStatic(memberObject.getModifiers());
+    }
+
+    String getName()
+    {
+        return memberObject.getName();
+    }
+
+    Class getDeclaringClass()
+    {
+        return memberObject.getDeclaringClass();
+    }
+
+    String toJavaDeclaration()
+    {
+        StringBuffer sb = new StringBuffer();
+        if (isMethod()) {
+            Method method = method();
+            sb.append(method.getReturnType());
+            sb.append(' ');
+            sb.append(method.getName());
+        } else {
+            Constructor ctor = ctor();
+            String name = ctor.getDeclaringClass().getName();
+            int lastDot = name.lastIndexOf('.');
+            if (lastDot >= 0) {
+                name = name.substring(lastDot + 1);
+            }
+            sb.append(name);
+        }
+        sb.append(JavaMembers.liveConnectSignature(argTypes));
+        return sb.toString();
+    }
+
+    public String toString()
+    {
+        return memberObject.toString();
+    }
+
+    Object invoke(Object target, Object[] args)
+    {
+        Method method = method();
+        try {
+            try {
+                return method.invoke(target, args);
+            } catch (IllegalAccessException ex) {
+                Method accessible = searchAccessibleMethod(method, argTypes);
+                if (accessible != null) {
+                    memberObject = accessible;
+                    method = accessible;
+                } else {
+                    if (!VMBridge.instance.tryToMakeAccessible(method)) {
+                        throw Context.throwAsScriptRuntimeEx(ex);
+                    }
+                }
+                // Retry after recovery
+                return method.invoke(target, args);
+            }
+        } catch (Exception ex) {
+            throw Context.throwAsScriptRuntimeEx(ex);
+        }
+    }
+
+    Object newInstance(Object[] args)
+    {
+        Constructor ctor = ctor();
+        try {
+            try {
+                return ctor.newInstance(args);
+            } catch (IllegalAccessException ex) {
+                if (!VMBridge.instance.tryToMakeAccessible(ctor)) {
+                    throw Context.throwAsScriptRuntimeEx(ex);
+                }
+            }
+            return ctor.newInstance(args);
+        } catch (Exception ex) {
+            throw Context.throwAsScriptRuntimeEx(ex);
+        }
+    }
+
+    private static Method searchAccessibleMethod(Method method, Class[] params)
+    {
+        int modifiers = method.getModifiers();
+        if (Modifier.isPublic(modifiers) && !Modifier.isStatic(modifiers)) {
+            Class c = method.getDeclaringClass();
+            if (!Modifier.isPublic(c.getModifiers())) {
+                String name = method.getName();
+                Class[] intfs = c.getInterfaces();
+                for (int i = 0, N = intfs.length; i != N; ++i) {
+                    Class intf = intfs[i];
+                    if (Modifier.isPublic(intf.getModifiers())) {
+                        try {
+                            return intf.getMethod(name, params);
+                        } catch (NoSuchMethodException ex) {
+                        } catch (SecurityException ex) {  }
+                    }
+                }
+                for (;;) {
+                    c = c.getSuperclass();
+                    if (c == null) { break; }
+                    if (Modifier.isPublic(c.getModifiers())) {
+                        try {
+                            Method m = c.getMethod(name, params);
+                            int mModifiers = m.getModifiers();
+                            if (Modifier.isPublic(mModifiers)
+                                && !Modifier.isStatic(mModifiers))
+                            {
+                                return m;
+                            }
+                        } catch (NoSuchMethodException ex) {
+                        } catch (SecurityException ex) {  }
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    private void readObject(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        in.defaultReadObject();
+        Member member = readMember(in);
+        if (member instanceof Method) {
+            init((Method)member);
+        } else {
+            init((Constructor)member);
+        }
+    }
+
+    private void writeObject(ObjectOutputStream out)
+        throws IOException
+    {
+        out.defaultWriteObject();
+        writeMember(out, memberObject);
+    }
+
+    /**
+     * Writes a Constructor or Method object.
+     *
+     * Methods and Constructors are not serializable, so we must serialize
+     * information about the class, the name, and the parameters and
+     * recreate upon deserialization.
+     */
+    private static void writeMember(ObjectOutputStream out, Member member)
+        throws IOException
+    {
+        if (member == null) {
+            out.writeBoolean(false);
+            return;
+        }
+        out.writeBoolean(true);
+        if (!(member instanceof Method || member instanceof Constructor))
+            throw new IllegalArgumentException("not Method or Constructor");
+        out.writeBoolean(member instanceof Method);
+        out.writeObject(member.getName());
+        out.writeObject(member.getDeclaringClass());
+        if (member instanceof Method) {
+            writeParameters(out, ((Method) member).getParameterTypes());
+        } else {
+            writeParameters(out, ((Constructor) member).getParameterTypes());
+        }
+    }
+
+    /**
+     * Reads a Method or a Constructor from the stream.
+     */
+    private static Member readMember(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        if (!in.readBoolean())
+            return null;
+        boolean isMethod = in.readBoolean();
+        String name = (String) in.readObject();
+        Class declaring = (Class) in.readObject();
+        Class[] parms = readParameters(in);
+        try {
+            if (isMethod) {
+                return declaring.getMethod(name, parms);
+            } else {
+                return declaring.getConstructor(parms);
+            }
+        } catch (NoSuchMethodException e) {
+            throw new IOException("Cannot find member: " + e);
+        }
+    }
+
+    private static final Class[] primitives = {
+        Boolean.TYPE,
+        Byte.TYPE,
+        Character.TYPE,
+        Double.TYPE,
+        Float.TYPE,
+        Integer.TYPE,
+        Long.TYPE,
+        Short.TYPE,
+        Void.TYPE
+    };
+
+    /**
+     * Writes an array of parameter types to the stream.
+     *
+     * Requires special handling because primitive types cannot be
+     * found upon deserialization by the default Java implementation.
+     */
+    private static void writeParameters(ObjectOutputStream out, Class[] parms)
+        throws IOException
+    {
+        out.writeShort(parms.length);
+    outer:
+        for (int i=0; i < parms.length; i++) {
+            Class parm = parms[i];
+            boolean primitive = parm.isPrimitive();
+            out.writeBoolean(primitive);
+            if (!primitive) {
+                out.writeObject(parm);
+                continue;
+            }
+            for (int j=0; j < primitives.length; j++) {
+                if (parm.equals(primitives[j])) {
+                    out.writeByte(j);
+                    continue outer;
+                }
+            }
+            throw new IllegalArgumentException("Primitive " + parm +
+                                               " not found");
+        }
+    }
+
+    /**
+     * Reads an array of parameter types from the stream.
+     */
+    private static Class[] readParameters(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        Class[] result = new Class[in.readShort()];
+        for (int i=0; i < result.length; i++) {
+            if (!in.readBoolean()) {
+                result[i] = (Class) in.readObject();
+                continue;
+            }
+            result[i] = primitives[in.readByte()];
+        }
+        return result;
+    }
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeArray.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeArray.java
new file mode 100644
index 0000000..b170ff4
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeArray.java
@@ -0,0 +1,1727 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Mike McCabe
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.Arrays;
+
+/**
+ * This class implements the Array native object.
+ * @author Norris Boyd
+ * @author Mike McCabe
+ */
+public class NativeArray extends IdScriptableObject
+{
+    static final long serialVersionUID = 7331366857676127338L;
+
+    /*
+     * Optimization possibilities and open issues:
+     * - Long vs. double schizophrenia.  I suspect it might be better
+     * to use double throughout.
+     *
+     * - Functions that need a new Array call "new Array" in the
+     * current scope rather than using a hardwired constructor;
+     * "Array" could be redefined.  It turns out that js calls the
+     * equivalent of "new Array" in the current scope, except that it
+     * always gets at least an object back, even when Array == null.
+     */
+
+    private static final Object ARRAY_TAG = new Object();
+    private static final Integer NEGATIVE_ONE = new Integer(-1);
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeArray obj = new NativeArray(0);
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+    
+    static int getMaximumInitialCapacity() {
+        return maximumInitialCapacity;
+    }
+
+    static void setMaximumInitialCapacity(int maximumInitialCapacity) {
+        NativeArray.maximumInitialCapacity = maximumInitialCapacity;
+    }
+
+    public NativeArray(long lengthArg)
+    {
+        denseOnly = lengthArg <= maximumInitialCapacity;
+        if (denseOnly) {
+            int intLength = (int) lengthArg;
+            if (intLength < DEFAULT_INITIAL_CAPACITY)
+                intLength = DEFAULT_INITIAL_CAPACITY;
+            dense = new Object[intLength];
+            Arrays.fill(dense, Scriptable.NOT_FOUND);
+        }
+        length = lengthArg;
+    }
+
+    public NativeArray(Object[] array)
+    {
+        denseOnly = true;
+        dense = array;
+        length = array.length;
+    }
+
+    public String getClassName()
+    {
+        return "Array";
+    }
+
+    private static final int
+        Id_length        =  1,
+        MAX_INSTANCE_ID  =  1;
+
+    protected int getMaxInstanceId()
+    {
+        return MAX_INSTANCE_ID;
+    }
+
+    protected int findInstanceIdInfo(String s)
+    {
+        if (s.equals("length")) {
+            return instanceIdInfo(DONTENUM | PERMANENT, Id_length);
+        }
+        return super.findInstanceIdInfo(s);
+    }
+
+    protected String getInstanceIdName(int id)
+    {
+        if (id == Id_length) { return "length"; }
+        return super.getInstanceIdName(id);
+    }
+
+    protected Object getInstanceIdValue(int id)
+    {
+        if (id == Id_length) {
+            return ScriptRuntime.wrapNumber(length);
+        }
+        return super.getInstanceIdValue(id);
+    }
+
+    protected void setInstanceIdValue(int id, Object value)
+    {
+        if (id == Id_length) {
+            setLength(value); return;
+        }
+        super.setInstanceIdValue(id, value);
+    }
+    
+    protected void fillConstructorProperties(IdFunctionObject ctor)
+    {
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_join,
+                "join", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_reverse,
+                "reverse", 1);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_sort,
+                "sort", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_push,
+                "push", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_pop,
+                "pop", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_shift,
+                "shift", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_unshift,
+                "unshift", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_splice,
+                "splice", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_concat,
+                "concat", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_slice,
+                "slice", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_indexOf,
+                "indexOf", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_lastIndexOf,
+                "lastIndexOf", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_every,
+                "every", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_filter,
+                "filter", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_forEach,
+                "forEach", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_map,
+                "map", 2);
+        addIdFunctionProperty(ctor, ARRAY_TAG, ConstructorId_some,
+                "some", 2);
+        super.fillConstructorProperties(ctor);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor:    arity=1; s="constructor";    break;
+          case Id_toString:       arity=0; s="toString";       break;
+          case Id_toLocaleString: arity=1; s="toLocaleString"; break;
+          case Id_toSource:       arity=0; s="toSource";       break;
+          case Id_join:           arity=1; s="join";           break;
+          case Id_reverse:        arity=0; s="reverse";        break;
+          case Id_sort:           arity=1; s="sort";           break;
+          case Id_push:           arity=1; s="push";           break;
+          case Id_pop:            arity=1; s="pop";            break;
+          case Id_shift:          arity=1; s="shift";          break;
+          case Id_unshift:        arity=1; s="unshift";        break;
+          case Id_splice:         arity=1; s="splice";         break;
+          case Id_concat:         arity=1; s="concat";         break;
+          case Id_slice:          arity=1; s="slice";          break;
+          case Id_indexOf:        arity=1; s="indexOf";        break;
+          case Id_lastIndexOf:    arity=1; s="lastIndexOf";    break;
+          case Id_every:          arity=1; s="every";          break;
+          case Id_filter:         arity=1; s="filter";         break;
+          case Id_forEach:        arity=1; s="forEach";        break;
+          case Id_map:            arity=1; s="map";            break;
+          case Id_some:           arity=1; s="some";           break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(ARRAY_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(ARRAY_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+      again:
+        for (;;) {
+            switch (id) {
+              case ConstructorId_join:
+              case ConstructorId_reverse:
+              case ConstructorId_sort:
+              case ConstructorId_push:
+              case ConstructorId_pop:
+              case ConstructorId_shift:
+              case ConstructorId_unshift:
+              case ConstructorId_splice:
+              case ConstructorId_concat:
+              case ConstructorId_slice:
+              case ConstructorId_indexOf:
+              case ConstructorId_lastIndexOf:
+              case ConstructorId_every:
+              case ConstructorId_filter:
+              case ConstructorId_forEach:
+              case ConstructorId_map:
+              case ConstructorId_some: {
+                thisObj = ScriptRuntime.toObject(scope, args[0]);
+                Object[] newArgs = new Object[args.length-1];
+                for (int i=0; i < newArgs.length; i++)
+                    newArgs[i] = args[i+1];
+                args = newArgs;
+                id = -id;
+                continue again;
+              }
+    
+              case Id_constructor: {
+                boolean inNewExpr = (thisObj == null);
+                if (!inNewExpr) {
+                    // IdFunctionObject.construct will set up parent, proto
+                    return f.construct(cx, scope, args);
+                }
+                return jsConstructor(cx, scope, args);
+              }
+    
+              case Id_toString:
+                return toStringHelper(cx, scope, thisObj,
+                    cx.hasFeature(Context.FEATURE_TO_STRING_AS_SOURCE), false);
+    
+              case Id_toLocaleString:
+                return toStringHelper(cx, scope, thisObj, false, true);
+    
+              case Id_toSource:
+                return toStringHelper(cx, scope, thisObj, true, false);
+    
+              case Id_join:
+                return js_join(cx, thisObj, args);
+    
+              case Id_reverse:
+                return js_reverse(cx, thisObj, args);
+    
+              case Id_sort:
+                return js_sort(cx, scope, thisObj, args);
+    
+              case Id_push:
+                return js_push(cx, thisObj, args);
+    
+              case Id_pop:
+                return js_pop(cx, thisObj, args);
+    
+              case Id_shift:
+                return js_shift(cx, thisObj, args);
+    
+              case Id_unshift:
+                return js_unshift(cx, thisObj, args);
+    
+              case Id_splice:
+                return js_splice(cx, scope, thisObj, args);
+    
+              case Id_concat:
+                return js_concat(cx, scope, thisObj, args);
+    
+              case Id_slice:
+                return js_slice(cx, thisObj, args);
+    
+              case Id_indexOf:
+                return indexOfHelper(cx, thisObj, args, false);
+    
+              case Id_lastIndexOf:
+                return indexOfHelper(cx, thisObj, args, true);
+    
+              case Id_every:
+              case Id_filter:
+              case Id_forEach:
+              case Id_map:
+              case Id_some:
+                return iterativeMethod(cx, id, scope, thisObj, args);
+            }
+            throw new IllegalArgumentException(String.valueOf(id));
+        }
+    }
+
+    public Object get(int index, Scriptable start)
+    {
+        if (!denseOnly && isGetterOrSetter(null, index, false))
+            return super.get(index, start);
+        if (dense != null && 0 <= index && index < dense.length)
+            return dense[index];
+        return super.get(index, start);
+    }
+
+    public boolean has(int index, Scriptable start)
+    {
+        if (!denseOnly && isGetterOrSetter(null, index, false))
+            return super.has(index, start);
+        if (dense != null && 0 <= index && index < dense.length)
+            return dense[index] != NOT_FOUND;
+        return super.has(index, start);
+    }
+
+    // if id is an array index (ECMA 15.4.0), return the number,
+    // otherwise return -1L
+    private static long toArrayIndex(String id)
+    {
+        double d = ScriptRuntime.toNumber(id);
+        if (d == d) {
+            long index = ScriptRuntime.toUint32(d);
+            if (index == d && index != 4294967295L) {
+                // Assume that ScriptRuntime.toString(index) is the same
+                // as java.lang.Long.toString(index) for long
+                if (Long.toString(index).equals(id)) {
+                    return index;
+                }
+            }
+        }
+        return -1;
+    }
+
+    public void put(String id, Scriptable start, Object value)
+    {
+        super.put(id, start, value);
+        if (start == this) {
+            // If the object is sealed, super will throw exception
+            long index = toArrayIndex(id);
+            if (index >= length) {
+                length = index + 1;
+                denseOnly = false;
+            }
+        }
+    }
+
+    private boolean ensureCapacity(int capacity)
+    {
+        if (capacity > dense.length) {
+            if (capacity > MAX_PRE_GROW_SIZE) {
+                denseOnly = false;
+                return false;
+            }
+            capacity = Math.max(capacity, (int)(dense.length * GROW_FACTOR));
+            Object[] newDense = new Object[capacity];
+            System.arraycopy(dense, 0, newDense, 0, dense.length);
+            Arrays.fill(newDense, dense.length, newDense.length,
+                        Scriptable.NOT_FOUND);
+            dense = newDense;
+        }
+        return true;
+    }
+
+    public void put(int index, Scriptable start, Object value)
+    {
+        if (start == this && !isSealed() && dense != null && 0 <= index &&
+            (denseOnly || !isGetterOrSetter(null, index, true)))
+        {
+            if (index < dense.length) {
+                dense[index] = value;
+                if (this.length <= index)
+                    this.length = (long)index + 1;
+                return;
+            } else if (denseOnly && index < dense.length * GROW_FACTOR &&
+                       ensureCapacity(index+1))
+            {
+                dense[index] = value;
+                this.length = (long)index + 1;
+                return;
+            } else {
+                denseOnly = false;
+            }
+        }
+        super.put(index, start, value);
+        if (start == this) {
+            // only set the array length if given an array index (ECMA 15.4.0)
+            if (this.length <= index) {
+                // avoid overflowing index!
+                this.length = (long)index + 1;
+            }
+        }
+    }
+
+    public void delete(int index)
+    {
+        if (dense != null && 0 <= index && index < dense.length &&
+            !isSealed() && (denseOnly || !isGetterOrSetter(null, index, true)))
+        {
+            dense[index] = NOT_FOUND;
+        } else {
+            super.delete(index);
+        }
+    }
+
+    public Object[] getIds()
+    {
+        Object[] superIds = super.getIds();
+        if (dense == null) { return superIds; }
+        int N = dense.length;
+        long currentLength = length;
+        if (N > currentLength) {
+            N = (int)currentLength;
+        }
+        if (N == 0) { return superIds; }
+        int superLength = superIds.length;
+        Object[] ids = new Object[N + superLength];
+
+        int presentCount = 0;
+        for (int i = 0; i != N; ++i) {
+            // Replace existing elements by their indexes
+            if (dense[i] != NOT_FOUND) {
+                ids[presentCount] = new Integer(i);
+                ++presentCount;
+            }
+        }
+        if (presentCount != N) {
+            // dense contains deleted elems, need to shrink the result
+            Object[] tmp = new Object[presentCount + superLength];
+            System.arraycopy(ids, 0, tmp, 0, presentCount);
+            ids = tmp;
+        }
+        System.arraycopy(superIds, 0, ids, presentCount, superLength);
+        return ids;
+    }
+
+    public Object getDefaultValue(Class hint)
+    {
+        if (hint == ScriptRuntime.NumberClass) {
+            Context cx = Context.getContext();
+            if (cx.getLanguageVersion() == Context.VERSION_1_2)
+                return new Long(length);
+        }
+        return super.getDefaultValue(hint);
+    }
+
+    /**
+     * See ECMA 15.4.1,2
+     */
+    private static Object jsConstructor(Context cx, Scriptable scope,
+                                        Object[] args)
+    {
+        if (args.length == 0)
+            return new NativeArray(0);
+
+        // Only use 1 arg as first element for version 1.2; for
+        // any other version (including 1.3) follow ECMA and use it as
+        // a length.
+        if (cx.getLanguageVersion() == Context.VERSION_1_2) {
+            return new NativeArray(args);
+        } else {
+            Object arg0 = args[0];
+            if (args.length > 1 || !(arg0 instanceof Number)) {
+                return new NativeArray(args);
+            } else {
+                long len = ScriptRuntime.toUint32(arg0);
+                if (len != ((Number)arg0).doubleValue())
+                    throw Context.reportRuntimeError0("msg.arraylength.bad");
+                return new NativeArray(len);
+            }
+        }
+    }
+
+    public long getLength() {
+        return length;
+    }
+
+    /** @deprecated Use {@link #getLength()} instead. */
+    public long jsGet_length() {
+        return getLength();
+    }
+    
+    /**
+     * Change the value of the internal flag that determines whether all
+     * storage is handed by a dense backing array rather than an associative
+     * store.
+     * @param denseOnly new value for denseOnly flag
+     * @throws IllegalArgumentException if an attempt is made to enable
+     *   denseOnly after it was disabled; NativeArray code is not written
+     *   to handle switching back to a dense representation
+     */
+    void setDenseOnly(boolean denseOnly) {
+        if (denseOnly && !this.denseOnly)
+            throw new IllegalArgumentException();
+        this.denseOnly = denseOnly;
+    }
+
+    private void setLength(Object val) {
+        /* XXX do we satisfy this?
+         * 15.4.5.1 [[Put]](P, V):
+         * 1. Call the [[CanPut]] method of A with name P.
+         * 2. If Result(1) is false, return.
+         * ?
+         */
+
+        double d = ScriptRuntime.toNumber(val);
+        long longVal = ScriptRuntime.toUint32(d);
+        if (longVal != d)
+            throw Context.reportRuntimeError0("msg.arraylength.bad");
+
+        if (denseOnly) {
+            if (longVal < length) {
+                // downcast okay because denseOnly
+                Arrays.fill(dense, (int) longVal, dense.length, NOT_FOUND);
+                length = longVal;
+                return;
+            } else if (longVal < MAX_PRE_GROW_SIZE &&
+                       longVal < (length * GROW_FACTOR) &&
+                       ensureCapacity((int)longVal))
+            {
+                length = longVal;
+                return;
+            } else {
+                denseOnly = false;
+            }
+        }
+        if (longVal < length) {
+            // remove all properties between longVal and length
+            if (length - longVal > 0x1000) {
+                // assume that the representation is sparse
+                Object[] e = getIds(); // will only find in object itself
+                for (int i=0; i < e.length; i++) {
+                    Object id = e[i];
+                    if (id instanceof String) {
+                        // > MAXINT will appear as string
+                        String strId = (String)id;
+                        long index = toArrayIndex(strId);
+                        if (index >= longVal)
+                            delete(strId);
+                    } else {
+                        int index = ((Integer)id).intValue();
+                        if (index >= longVal)
+                            delete(index);
+                    }
+                }
+            } else {
+                // assume a dense representation
+                for (long i = longVal; i < length; i++) {
+                    deleteElem(this, i);
+                }
+            }
+        }
+        length = longVal;
+    }
+
+    /* Support for generic Array-ish objects.  Most of the Array
+     * functions try to be generic; anything that has a length
+     * property is assumed to be an array.
+     * getLengthProperty returns 0 if obj does not have the length property
+     * or its value is not convertible to a number.
+     */
+    static long getLengthProperty(Context cx, Scriptable obj) {
+        // These will both give numeric lengths within Uint32 range.
+        if (obj instanceof NativeString) {
+            return ((NativeString)obj).getLength();
+        } else if (obj instanceof NativeArray) {
+            return ((NativeArray)obj).getLength();
+        }
+        return ScriptRuntime.toUint32(
+            ScriptRuntime.getObjectProp(obj, "length", cx));
+    }
+
+    private static Object setLengthProperty(Context cx, Scriptable target,
+                                            long length)
+    {
+        return ScriptRuntime.setObjectProp(
+                   target, "length", ScriptRuntime.wrapNumber(length), cx);
+    }
+
+    /* Utility functions to encapsulate index > Integer.MAX_VALUE
+     * handling.  Also avoids unnecessary object creation that would
+     * be necessary to use the general ScriptRuntime.get/setElem
+     * functions... though this is probably premature optimization.
+     */
+    private static void deleteElem(Scriptable target, long index) {
+        int i = (int)index;
+        if (i == index) { target.delete(i); }
+        else { target.delete(Long.toString(index)); }
+    }
+
+    private static Object getElem(Context cx, Scriptable target, long index)
+    {
+        if (index > Integer.MAX_VALUE) {
+            String id = Long.toString(index);
+            return ScriptRuntime.getObjectProp(target, id, cx);
+        } else {
+            return ScriptRuntime.getObjectIndex(target, (int)index, cx);
+        }
+    }
+
+    private static void setElem(Context cx, Scriptable target, long index,
+                                Object value)
+    {
+        if (index > Integer.MAX_VALUE) {
+            String id = Long.toString(index);
+            ScriptRuntime.setObjectProp(target, id, value, cx);
+        } else {
+            ScriptRuntime.setObjectIndex(target, (int)index, value, cx);
+        }
+    }
+
+    private static String toStringHelper(Context cx, Scriptable scope,
+                                         Scriptable thisObj,
+                                         boolean toSource, boolean toLocale)
+    {
+        /* It's probably redundant to handle long lengths in this
+         * function; StringBuffers are limited to 2^31 in java.
+         */
+
+        long length = getLengthProperty(cx, thisObj);
+
+        StringBuffer result = new StringBuffer(256);
+
+        // whether to return '4,unquoted,5' or '[4, "quoted", 5]'
+        String separator;
+
+        if (toSource) {
+            result.append('[');
+            separator = ", ";
+        } else {
+            separator = ",";
+        }
+
+        boolean haslast = false;
+        long i = 0;
+
+        boolean toplevel, iterating;
+        if (cx.iterating == null) {
+            toplevel = true;
+            iterating = false;
+            cx.iterating = new ObjToIntMap(31);
+        } else {
+            toplevel = false;
+            iterating = cx.iterating.has(thisObj);
+        }
+
+        // Make sure cx.iterating is set to null when done
+        // so we don't leak memory
+        try {
+            if (!iterating) {
+                cx.iterating.put(thisObj, 0); // stop recursion.
+                for (i = 0; i < length; i++) {
+                    if (i > 0) result.append(separator);
+                    Object elem = getElem(cx, thisObj, i);
+                    if (elem == null || elem == Undefined.instance) {
+                        haslast = false;
+                        continue;
+                    }
+                    haslast = true;
+
+                    if (toSource) {
+                        result.append(ScriptRuntime.uneval(cx, scope, elem));
+
+                    } else if (elem instanceof String) {
+                        String s = (String)elem;
+                        if (toSource) {
+                            result.append('\"');
+                            result.append(ScriptRuntime.escapeString(s));
+                            result.append('\"');
+                        } else {
+                            result.append(s);
+                        }
+
+                    } else {
+                        if (toLocale)
+                        {
+                            Callable fun;
+                            Scriptable funThis;
+                            fun = ScriptRuntime.getPropFunctionAndThis(
+                                      elem, "toLocaleString", cx);
+                            funThis = ScriptRuntime.lastStoredScriptable(cx);
+                            elem = fun.call(cx, scope, funThis,
+                                            ScriptRuntime.emptyArgs);
+                        }
+                        result.append(ScriptRuntime.toString(elem));
+                    }
+                }
+            }
+        } finally {
+            if (toplevel) {
+                cx.iterating = null;
+            }
+        }
+
+        if (toSource) {
+            //for [,,].length behavior; we want toString to be symmetric.
+            if (!haslast && i > 0)
+                result.append(", ]");
+            else
+                result.append(']');
+        }
+        return result.toString();
+    }
+
+    /**
+     * See ECMA 15.4.4.3
+     */
+    private static String js_join(Context cx, Scriptable thisObj,
+                                  Object[] args)
+    {
+        long llength = getLengthProperty(cx, thisObj);
+        int length = (int)llength;
+        if (llength != length) {
+            throw Context.reportRuntimeError1(
+                "msg.arraylength.too.big", String.valueOf(llength));
+        }
+        // if no args, use "," as separator
+        String separator = (args.length < 1 || args[0] == Undefined.instance)
+                           ? ","
+                           : ScriptRuntime.toString(args[0]);
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly) {
+                StringBuffer sb = new StringBuffer();
+                for (int i = 0; i < length; i++) {
+                    if (i != 0) {
+                        sb.append(separator);
+                    }
+                    if (i < na.dense.length) {
+                        Object temp = na.dense[i];
+                        if (temp != null && temp != Undefined.instance &&
+                            temp != Scriptable.NOT_FOUND)
+                        {
+                            sb.append(ScriptRuntime.toString(temp));
+                        }
+                    }
+                }
+                return sb.toString();
+            }
+        }
+        if (length == 0) {
+            return "";
+        }
+        String[] buf = new String[length];
+        int total_size = 0;
+        for (int i = 0; i != length; i++) {
+            Object temp = getElem(cx, thisObj, i);
+            if (temp != null && temp != Undefined.instance) {
+                String str = ScriptRuntime.toString(temp);
+                total_size += str.length();
+                buf[i] = str;
+            }
+        }
+        total_size += (length - 1) * separator.length();
+        StringBuffer sb = new StringBuffer(total_size);
+        for (int i = 0; i != length; i++) {
+            if (i != 0) {
+                sb.append(separator);
+            }
+            String str = buf[i];
+            if (str != null) {
+                // str == null for undefined or null
+                sb.append(str);
+            }
+        }
+        return sb.toString();
+    }
+
+    /**
+     * See ECMA 15.4.4.4
+     */
+    private static Scriptable js_reverse(Context cx, Scriptable thisObj,
+                                         Object[] args)
+    {
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly) {
+                for (int i=0, j=((int)na.length)-1; i < j; i++,j--) {
+                    Object temp = na.dense[i];
+                    na.dense[i] = na.dense[j];
+                    na.dense[j] = temp;
+                }
+                return thisObj;
+            }
+        }
+        long len = getLengthProperty(cx, thisObj);
+
+        long half = len / 2;
+        for(long i=0; i < half; i++) {
+            long j = len - i - 1;
+            Object temp1 = getElem(cx, thisObj, i);
+            Object temp2 = getElem(cx, thisObj, j);
+            setElem(cx, thisObj, i, temp2);
+            setElem(cx, thisObj, j, temp1);
+        }
+        return thisObj;
+    }
+
+    /**
+     * See ECMA 15.4.4.5
+     */
+    private static Scriptable js_sort(Context cx, Scriptable scope,
+                                      Scriptable thisObj, Object[] args)
+    {
+        long length = getLengthProperty(cx, thisObj);
+
+        if (length <= 1) { return thisObj; }
+
+        Object compare;
+        Object[] cmpBuf;
+
+        if (args.length > 0 && Undefined.instance != args[0]) {
+            // sort with given compare function
+            compare = args[0];
+            cmpBuf = new Object[2]; // Buffer for cmp arguments
+        } else {
+            // sort with default compare
+            compare = null;
+            cmpBuf = null;
+        }
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly) {
+                int ilength = (int) length;
+                heapsort(cx, scope, na.dense, ilength, compare, cmpBuf);
+                return thisObj;
+            }
+        }
+
+        // Should we use the extended sort function, or the faster one?
+        if (length >= Integer.MAX_VALUE) {
+            heapsort_extended(cx, scope, thisObj, length, compare, cmpBuf);
+        } else {
+            int ilength = (int)length;
+            // copy the JS array into a working array, so it can be
+            // sorted cheaply.
+            Object[] working = new Object[ilength];
+            for (int i = 0; i != ilength; ++i) {
+                working[i] = getElem(cx, thisObj, i);
+            }
+
+            heapsort(cx, scope, working, ilength, compare, cmpBuf);
+
+            // copy the working array back into thisObj
+            for (int i = 0; i != ilength; ++i) {
+                setElem(cx, thisObj, i, working[i]);
+            }
+        }
+        return thisObj;
+    }
+
+    // Return true only if x > y
+    private static boolean isBigger(Context cx, Scriptable scope,
+                                    Object x, Object y,
+                                    Object cmp, Object[] cmpBuf)
+    {
+        if (cmp == null) {
+            if (cmpBuf != null) Kit.codeBug();
+        } else {
+            if (cmpBuf == null || cmpBuf.length != 2) Kit.codeBug();
+        }
+
+        Object undef = Undefined.instance;
+        Object notfound = Scriptable.NOT_FOUND;
+
+        // sort undefined to end
+        if (y == undef || y == notfound) {
+            return false; // x can not be bigger then undef
+        } else if (x == undef || x == notfound) {
+            return true; // y != undef here, so x > y
+        }
+
+        if (cmp == null) {
+            // if no cmp function supplied, sort lexicographically
+            String a = ScriptRuntime.toString(x);
+            String b = ScriptRuntime.toString(y);
+            return a.compareTo(b) > 0;
+        }
+        else {
+            // assemble args and call supplied JS cmp function
+            cmpBuf[0] = x;
+            cmpBuf[1] = y;
+            Callable fun = ScriptRuntime.getValueFunctionAndThis(cmp, cx);
+            Scriptable funThis = ScriptRuntime.lastStoredScriptable(cx);
+
+            Object ret = fun.call(cx, scope, funThis, cmpBuf);
+            double d = ScriptRuntime.toNumber(ret);
+
+            // XXX what to do when cmp function returns NaN?  ECMA states
+            // that it's then not a 'consistent comparison function'... but
+            // then what do we do?  Back out and start over with the generic
+            // cmp function when we see a NaN?  Throw an error?
+
+            // for now, just ignore it:
+
+            return d > 0;
+        }
+    }
+
+/** Heapsort implementation.
+ * See "Introduction to Algorithms" by Cormen, Leiserson, Rivest for details.
+ * Adjusted for zero based indexes.
+ */
+    private static void heapsort(Context cx, Scriptable scope,
+                                 Object[] array, int length,
+                                 Object cmp, Object[] cmpBuf)
+    {
+        if (length <= 1) Kit.codeBug();
+
+        // Build heap
+        for (int i = length / 2; i != 0;) {
+            --i;
+            Object pivot = array[i];
+            heapify(cx, scope, pivot, array, i, length, cmp, cmpBuf);
+        }
+
+        // Sort heap
+        for (int i = length; i != 1;) {
+            --i;
+            Object pivot = array[i];
+            array[i] = array[0];
+            heapify(cx, scope, pivot, array, 0, i, cmp, cmpBuf);
+        }
+    }
+
+/** pivot and child heaps of i should be made into heap starting at i,
+ * original array[i] is never used to have less array access during sorting.
+ */
+    private static void heapify(Context cx, Scriptable scope,
+                                Object pivot, Object[] array, int i, int end,
+                                Object cmp, Object[] cmpBuf)
+    {
+        for (;;) {
+            int child = i * 2 + 1;
+            if (child >= end) {
+                break;
+            }
+            Object childVal = array[child];
+            if (child + 1 < end) {
+                Object nextVal = array[child + 1];
+                if (isBigger(cx, scope, nextVal, childVal, cmp, cmpBuf)) {
+                    ++child; childVal = nextVal;
+                }
+            }
+            if (!isBigger(cx, scope, childVal, pivot, cmp, cmpBuf)) {
+                break;
+            }
+            array[i] = childVal;
+            i = child;
+        }
+        array[i] = pivot;
+    }
+
+/** Version of heapsort that call getElem/setElem on target to query/assign
+ * array elements instead of Java array access
+ */
+    private static void heapsort_extended(Context cx, Scriptable scope,
+                                          Scriptable target, long length,
+                                          Object cmp, Object[] cmpBuf)
+    {
+        if (length <= 1) Kit.codeBug();
+
+        // Build heap
+        for (long i = length / 2; i != 0;) {
+            --i;
+            Object pivot = getElem(cx, target, i);
+            heapify_extended(cx, scope, pivot, target, i, length, cmp, cmpBuf);
+        }
+
+        // Sort heap
+        for (long i = length; i != 1;) {
+            --i;
+            Object pivot = getElem(cx, target, i);
+            setElem(cx, target, i, getElem(cx, target, 0));
+            heapify_extended(cx, scope, pivot, target, 0, i, cmp, cmpBuf);
+        }
+    }
+
+    private static void heapify_extended(Context cx, Scriptable scope,
+                                         Object pivot, Scriptable target,
+                                         long i, long end,
+                                         Object cmp, Object[] cmpBuf)
+    {
+        for (;;) {
+            long child = i * 2 + 1;
+            if (child >= end) {
+                break;
+            }
+            Object childVal = getElem(cx, target, child);
+            if (child + 1 < end) {
+                Object nextVal = getElem(cx, target, child + 1);
+                if (isBigger(cx, scope, nextVal, childVal, cmp, cmpBuf)) {
+                    ++child; childVal = nextVal;
+                }
+            }
+            if (!isBigger(cx, scope, childVal, pivot, cmp, cmpBuf)) {
+                break;
+            }
+            setElem(cx, target, i, childVal);
+            i = child;
+        }
+        setElem(cx, target, i, pivot);
+    }
+
+    /**
+     * Non-ECMA methods.
+     */
+
+    private static Object js_push(Context cx, Scriptable thisObj,
+                                  Object[] args)
+    {
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly &&
+                na.ensureCapacity((int) na.length + args.length))
+            {
+                for (int i = 0; i < args.length; i++) {
+                    na.dense[(int)na.length++] = args[i];
+                }
+                return ScriptRuntime.wrapNumber(na.length);
+            }
+        }
+        long length = getLengthProperty(cx, thisObj);
+        for (int i = 0; i < args.length; i++) {
+            setElem(cx, thisObj, length + i, args[i]);
+        }
+
+        length += args.length;
+        Object lengthObj = setLengthProperty(cx, thisObj, length);
+
+        /*
+         * If JS1.2, follow Perl4 by returning the last thing pushed.
+         * Otherwise, return the new array length.
+         */
+        if (cx.getLanguageVersion() == Context.VERSION_1_2)
+            // if JS1.2 && no arguments, return undefined.
+            return args.length == 0
+                ? Undefined.instance
+                : args[args.length - 1];
+
+        else
+            return lengthObj;
+    }
+
+    private static Object js_pop(Context cx, Scriptable thisObj,
+                                 Object[] args)
+    {
+        Object result;
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly && na.length > 0) {
+                na.length--;
+                result = na.dense[(int)na.length];
+                na.dense[(int)na.length] = NOT_FOUND;
+                return result;
+            }
+        }
+        long length = getLengthProperty(cx, thisObj);
+        if (length > 0) {
+            length--;
+
+            // Get the to-be-deleted property's value.
+            result = getElem(cx, thisObj, length);
+
+            // We don't need to delete the last property, because
+            // setLength does that for us.
+        } else {
+            result = Undefined.instance;
+        }
+        // necessary to match js even when length < 0; js pop will give a
+        // length property to any target it is called on.
+        setLengthProperty(cx, thisObj, length);
+
+        return result;
+    }
+
+    private static Object js_shift(Context cx, Scriptable thisObj,
+                                   Object[] args)
+    {
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly && na.length > 0) {
+                na.length--;
+                Object result = na.dense[0];
+                System.arraycopy(na.dense, 1, na.dense, 0, (int)na.length);
+                na.dense[(int)na.length] = NOT_FOUND;
+                return result;
+            }
+        }
+        Object result;
+        long length = getLengthProperty(cx, thisObj);
+        if (length > 0) {
+            long i = 0;
+            length--;
+
+            // Get the to-be-deleted property's value.
+            result = getElem(cx, thisObj, i);
+
+            /*
+             * Slide down the array above the first element.  Leave i
+             * set to point to the last element.
+             */
+            if (length > 0) {
+                for (i = 1; i <= length; i++) {
+                    Object temp = getElem(cx, thisObj, i);
+                    setElem(cx, thisObj, i - 1, temp);
+                }
+            }
+            // We don't need to delete the last property, because
+            // setLength does that for us.
+        } else {
+            result = Undefined.instance;
+        }
+        setLengthProperty(cx, thisObj, length);
+        return result;
+    }
+
+    private static Object js_unshift(Context cx, Scriptable thisObj,
+                                     Object[] args)
+    {
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly &&
+                na.ensureCapacity((int)na.length + args.length))
+            {
+                System.arraycopy(na.dense, 0, na.dense, args.length,
+                                 (int) na.length);
+                for (int i = 0; i < args.length; i++) {
+                    na.dense[i] = args[i];
+                }
+                na.length += args.length;
+                return ScriptRuntime.wrapNumber(na.length);
+            }
+        }
+        long length = getLengthProperty(cx, thisObj);
+        int argc = args.length;
+
+        if (args.length > 0) {
+            /*  Slide up the array to make room for args at the bottom */
+            if (length > 0) {
+                for (long last = length - 1; last >= 0; last--) {
+                    Object temp = getElem(cx, thisObj, last);
+                    setElem(cx, thisObj, last + argc, temp);
+                }
+            }
+
+            /* Copy from argv to the bottom of the array. */
+            for (int i = 0; i < args.length; i++) {
+                setElem(cx, thisObj, i, args[i]);
+            }
+
+            /* Follow Perl by returning the new array length. */
+            length += args.length;
+            return setLengthProperty(cx, thisObj, length);
+        }
+        return ScriptRuntime.wrapNumber(length);
+    }
+
+    private static Object js_splice(Context cx, Scriptable scope,
+                                    Scriptable thisObj, Object[] args)
+    {
+    	NativeArray na = null;
+    	boolean denseMode = false;
+        if (thisObj instanceof NativeArray) {
+            na = (NativeArray) thisObj;
+            denseMode = na.denseOnly;
+        }
+
+        /* create an empty Array to return. */
+        scope = getTopLevelScope(scope);
+        int argc = args.length;
+        if (argc == 0)
+            return ScriptRuntime.newObject(cx, scope, "Array", null);
+        long length = getLengthProperty(cx, thisObj);
+
+        /* Convert the first argument into a starting index. */
+        long begin = toSliceIndex(ScriptRuntime.toInteger(args[0]), length);
+        argc--;
+
+        /* Convert the second argument into count */
+        long count;
+        if (args.length == 1) {
+            count = length - begin;
+        } else {
+            double dcount = ScriptRuntime.toInteger(args[1]);
+            if (dcount < 0) {
+                count = 0;
+            } else if (dcount > (length - begin)) {
+                count = length - begin;
+            } else {
+                count = (long)dcount;
+            }
+            argc--;
+        }
+
+        long end = begin + count;
+
+        /* If there are elements to remove, put them into the return value. */
+        Object result;
+        if (count != 0) {
+            if (count == 1
+                && (cx.getLanguageVersion() == Context.VERSION_1_2))
+            {
+                /*
+                 * JS lacks "list context", whereby in Perl one turns the
+                 * single scalar that's spliced out into an array just by
+                 * assigning it to @single instead of $single, or by using it
+                 * as Perl push's first argument, for instance.
+                 *
+                 * JS1.2 emulated Perl too closely and returned a non-Array for
+                 * the single-splice-out case, requiring callers to test and
+                 * wrap in [] if necessary.  So JS1.3, default, and other
+                 * versions all return an array of length 1 for uniformity.
+                 */
+                result = getElem(cx, thisObj, begin);
+            } else {
+            	if (denseMode) {
+                    int intLen = (int) (end - begin);
+                    Object[] copy = new Object[intLen];
+                    System.arraycopy(na.dense, (int) begin, copy, 0, intLen);
+                    result = cx.newArray(scope, copy);
+            	} else {
+            		Scriptable resultArray = ScriptRuntime.newObject(cx, scope,
+                        "Array", null);
+                    for (long last = begin; last != end; last++) {
+                        Object temp = getElem(cx, thisObj, last);
+                        setElem(cx, resultArray, last - begin, temp);
+                    }
+                    result = resultArray;
+            	}
+            }
+        } else { // (count == 0)
+        	if (cx.getLanguageVersion() == Context.VERSION_1_2) {
+                /* Emulate C JS1.2; if no elements are removed, return undefined. */
+                result = Undefined.instance;
+            } else {
+            	result = ScriptRuntime.newObject(cx, scope, "Array", null);
+        	}
+        }
+
+        /* Find the direction (up or down) to copy and make way for argv. */
+        long delta = argc - count;
+        if (denseMode && length + delta < Integer.MAX_VALUE &&
+            na.ensureCapacity((int) (length + delta)))
+        {
+            System.arraycopy(na.dense, (int) end, na.dense,
+                             (int) (begin + argc), (int) (length - end));
+            if (argc > 0) {
+                System.arraycopy(args, 2, na.dense, (int) begin, argc);
+            }
+            if (delta < 0) {
+                Arrays.fill(na.dense, (int) (length + delta), (int) length,
+                            NOT_FOUND);
+            }
+            na.length = length + delta;
+            return result;
+        }
+
+        if (delta > 0) {
+            for (long last = length - 1; last >= end; last--) {
+                Object temp = getElem(cx, thisObj, last);
+                setElem(cx, thisObj, last + delta, temp);
+            }
+        } else if (delta < 0) {
+            for (long last = end; last < length; last++) {
+                Object temp = getElem(cx, thisObj, last);
+                setElem(cx, thisObj, last + delta, temp);
+            }
+        }
+
+        /* Copy from argv into the hole to complete the splice. */
+        int argoffset = args.length - argc;
+        for (int i = 0; i < argc; i++) {
+            setElem(cx, thisObj, begin + i, args[i + argoffset]);
+        }
+
+        /* Update length in case we deleted elements from the end. */
+        setLengthProperty(cx, thisObj, length + delta);
+        return result;
+    }
+
+    /*
+     * See Ecma 262v3 15.4.4.4
+     */
+    private static Scriptable js_concat(Context cx, Scriptable scope,
+                                        Scriptable thisObj, Object[] args)
+    {
+        // create an empty Array to return.
+        scope = getTopLevelScope(scope);
+        Function ctor = ScriptRuntime.getExistingCtor(cx, scope, "Array");
+        Scriptable result = ctor.construct(cx, scope, ScriptRuntime.emptyArgs);
+        if (thisObj instanceof NativeArray && result instanceof NativeArray) {
+            NativeArray denseThis = (NativeArray) thisObj;
+            NativeArray denseResult = (NativeArray) result;
+            if (denseThis.denseOnly && denseResult.denseOnly) {
+                // First calculate length of resulting array
+                boolean canUseDense = true;
+                int length = (int) denseThis.length;
+                for (int i = 0; i < args.length && canUseDense; i++) {
+                    if (ScriptRuntime.instanceOf(args[i], ctor, cx)) {
+                        // only try to use dense approach for Array-like
+                        // objects that are actually NativeArrays
+                        canUseDense = args[i] instanceof NativeArray;
+                        length += ((NativeArray) args[i]).length;
+                    } else {
+                        length++;
+                    }
+                }
+                if (canUseDense && denseResult.ensureCapacity(length)) {
+                    System.arraycopy(denseThis.dense, 0, denseResult.dense,
+                                     0, (int) denseThis.length);
+                    int cursor = (int) denseThis.length;
+                    for (int i = 0; i < args.length && canUseDense; i++) {
+                        if (args[i] instanceof NativeArray) {
+                            NativeArray arg = (NativeArray) args[i];
+                            System.arraycopy(arg.dense, 0,
+                                    denseResult.dense, cursor,
+                                    (int)arg.length);
+                            cursor += (int)arg.length;
+                        } else {
+                            denseResult.dense[cursor++] = args[i];
+                        }
+                    }
+                    denseResult.length = length;
+                    return result;
+                }
+            }
+        }
+
+        long length;
+        long slot = 0;
+
+        /* Put the target in the result array; only add it as an array
+         * if it looks like one.
+         */
+        if (ScriptRuntime.instanceOf(thisObj, ctor, cx)) {
+            length = getLengthProperty(cx, thisObj);
+
+            // Copy from the target object into the result
+            for (slot = 0; slot < length; slot++) {
+                Object temp = getElem(cx, thisObj, slot);
+                setElem(cx, result, slot, temp);
+            }
+        } else {
+            setElem(cx, result, slot++, thisObj);
+        }
+
+        /* Copy from the arguments into the result.  If any argument
+         * has a numeric length property, treat it as an array and add
+         * elements separately; otherwise, just copy the argument.
+         */
+        for (int i = 0; i < args.length; i++) {
+            if (ScriptRuntime.instanceOf(args[i], ctor, cx)) {
+                // ScriptRuntime.instanceOf => instanceof Scriptable
+                Scriptable arg = (Scriptable)args[i];
+                length = getLengthProperty(cx, arg);
+                for (long j = 0; j < length; j++, slot++) {
+                    Object temp = getElem(cx, arg, j);
+                    setElem(cx, result, slot, temp);
+                }
+            } else {
+                setElem(cx, result, slot++, args[i]);
+            }
+        }
+        return result;
+    }
+
+    private Scriptable js_slice(Context cx, Scriptable thisObj,
+                                Object[] args)
+    {
+        Scriptable scope = getTopLevelScope(this);
+        Scriptable result = ScriptRuntime.newObject(cx, scope, "Array", null);
+        long length = getLengthProperty(cx, thisObj);
+
+        long begin, end;
+        if (args.length == 0) {
+            begin = 0;
+            end = length;
+        } else {
+            begin = toSliceIndex(ScriptRuntime.toInteger(args[0]), length);
+            if (args.length == 1) {
+                end = length;
+            } else {
+                end = toSliceIndex(ScriptRuntime.toInteger(args[1]), length);
+            }
+        }
+
+        for (long slot = begin; slot < end; slot++) {
+            Object temp = getElem(cx, thisObj, slot);
+            setElem(cx, result, slot - begin, temp);
+        }
+
+        return result;
+    }
+
+    private static long toSliceIndex(double value, long length) {
+        long result;
+        if (value < 0.0) {
+            if (value + length < 0.0) {
+                result = 0;
+            } else {
+                result = (long)(value + length);
+            }
+        } else if (value > length) {
+            result = length;
+        } else {
+            result = (long)value;
+        }
+        return result;
+    }
+
+    /**
+     * Implements the methods "indexOf" and "lastIndexOf".
+     */
+    private Object indexOfHelper(Context cx, Scriptable thisObj,
+                                 Object[] args, boolean isLast)
+    {
+        Object compareTo = args.length > 0 ? args[0] : Undefined.instance;
+        long length = getLengthProperty(cx, thisObj);
+        long start;
+        if (isLast) {
+            // lastIndexOf
+            /*
+             * From http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Objects:Array:lastIndexOf
+             * The index at which to start searching backwards. Defaults to the
+             * array's length, i.e. the whole array will be searched. If the
+             * index is greater than or equal to the length of the array, the
+             * whole array will be searched. If negative, it is taken as the
+             * offset from the end of the array. Note that even when the index
+             * is negative, the array is still searched from back to front. If
+             * the calculated index is less than 0, -1 is returned, i.e. the
+             * array will not be searched.
+             */
+            if (args.length < 2) {
+                // default
+                start = length-1;
+            } else {
+                start = ScriptRuntime.toInt32(ScriptRuntime.toNumber(args[1]));
+                if (start >= length)
+                    start = length-1;
+                else if (start < 0)
+                    start += length;
+                // Note that start may be negative, but that's okay
+                // as the result of -1 will fall out from the code below
+            }
+        } else {
+            // indexOf
+            /*
+             * From http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Objects:Array:indexOf
+             * The index at which to begin the search. Defaults to 0, i.e. the
+             * whole array will be searched. If the index is greater than or
+             * equal to the length of the array, -1 is returned, i.e. the array
+             * will not be searched. If negative, it is taken as the offset from
+             * the end of the array. Note that even when the index is negative,
+             * the array is still searched from front to back. If the calculated
+             * index is less than 0, the whole array will be searched.
+             */
+            if (args.length < 2) {
+                // default
+                start = 0;
+            } else {
+                start = ScriptRuntime.toInt32(ScriptRuntime.toNumber(args[1]));
+                if (start < 0) {
+                    start += length;
+                    if (start < 0)
+                        start = 0;
+                }
+                // Note that start may be > length-1, but that's okay
+                // as the result of -1 will fall out from the code below
+            }
+        }
+        if (thisObj instanceof NativeArray) {
+            NativeArray na = (NativeArray) thisObj;
+            if (na.denseOnly) {
+                if (isLast) {
+                  for (int i=(int)start; i >= 0; i--) {
+                      if (na.dense[i] != Scriptable.NOT_FOUND &&
+                          ScriptRuntime.shallowEq(na.dense[i], compareTo))
+                      {
+                          return new Long(i);
+                      }
+                  }
+                } else {
+                  for (int i=(int)start; i < length; i++) {
+                      if (na.dense[i] != Scriptable.NOT_FOUND &&
+                          ScriptRuntime.shallowEq(na.dense[i], compareTo))
+                      {
+                          return new Long(i);
+                      }
+                  }
+                }
+                return NEGATIVE_ONE;
+            }
+        }
+        if (isLast) {
+          for (long i=start; i >= 0; i--) {
+              if (ScriptRuntime.shallowEq(getElem(cx, thisObj, i), compareTo)) {
+                  return new Long(i);
+              }
+          }
+        } else {
+          for (long i=start; i < length; i++) {
+              if (ScriptRuntime.shallowEq(getElem(cx, thisObj, i), compareTo)) {
+                  return new Long(i);
+              }
+          }
+        }
+        return NEGATIVE_ONE;
+    }
+
+    /**
+     * Implements the methods "every", "filter", "forEach", "map", and "some".
+     */
+    private Object iterativeMethod(Context cx, int id, Scriptable scope, 
+                                   Scriptable thisObj, Object[] args)
+    {
+        Object callbackArg = args.length > 0 ? args[0] : Undefined.instance;
+        if (callbackArg == null || !(callbackArg instanceof Function)) {
+            throw ScriptRuntime.notFunctionError(
+                     ScriptRuntime.toString(callbackArg));
+        }
+        Function f = (Function) callbackArg;
+        Scriptable parent = ScriptableObject.getTopLevelScope(f);
+        Scriptable thisArg;
+        if (args.length < 2 || args[1] == null || args[1] == Undefined.instance)
+        {
+            thisArg = parent;
+        } else {
+            thisArg = ScriptRuntime.toObject(cx, scope, args[1]);
+        }
+        long length = getLengthProperty(cx, thisObj);
+        Scriptable array = ScriptRuntime.newObject(cx, scope, "Array", null);
+        long j=0;
+        for (long i=0; i < length; i++) {
+            Object[] innerArgs = new Object[3];
+            Object elem = (i > Integer.MAX_VALUE)
+                ? ScriptableObject.getProperty(thisObj, Long.toString(i))
+                : ScriptableObject.getProperty(thisObj, (int)i);
+            if (elem == Scriptable.NOT_FOUND) {
+                continue;
+            }
+            innerArgs[0] = elem;
+            innerArgs[1] = new Long(i);
+            innerArgs[2] = thisObj;
+            Object result = f.call(cx, parent, thisArg, innerArgs);
+            switch (id) {
+              case Id_every:
+                if (!ScriptRuntime.toBoolean(result))
+                    return Boolean.FALSE;
+                break;
+              case Id_filter:
+                if (ScriptRuntime.toBoolean(result))
+                  setElem(cx, array, j++, innerArgs[0]);
+                break;
+              case Id_forEach:
+                break;
+              case Id_map:
+                setElem(cx, array, i, result);
+                break;
+              case Id_some:
+                if (ScriptRuntime.toBoolean(result))
+                    return Boolean.TRUE;
+                break;
+            }
+        }
+        switch (id) {
+          case Id_every:
+            return Boolean.TRUE;
+          case Id_filter:
+          case Id_map:
+            return array;
+          case Id_some:
+            return Boolean.FALSE;
+          case Id_forEach:
+          default:
+            return Undefined.instance;
+        }
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2005-09-26 15:47:42 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 3: c=s.charAt(0);
+                if (c=='m') { if (s.charAt(2)=='p' && s.charAt(1)=='a') {id=Id_map; break L0;} }
+                else if (c=='p') { if (s.charAt(2)=='p' && s.charAt(1)=='o') {id=Id_pop; break L0;} }
+                break L;
+            case 4: switch (s.charAt(2)) {
+                case 'i': X="join";id=Id_join; break L;
+                case 'm': X="some";id=Id_some; break L;
+                case 'r': X="sort";id=Id_sort; break L;
+                case 's': X="push";id=Id_push; break L;
+                } break L;
+            case 5: c=s.charAt(1);
+                if (c=='h') { X="shift";id=Id_shift; }
+                else if (c=='l') { X="slice";id=Id_slice; }
+                else if (c=='v') { X="every";id=Id_every; }
+                break L;
+            case 6: c=s.charAt(0);
+                if (c=='c') { X="concat";id=Id_concat; }
+                else if (c=='f') { X="filter";id=Id_filter; }
+                else if (c=='s') { X="splice";id=Id_splice; }
+                break L;
+            case 7: switch (s.charAt(0)) {
+                case 'f': X="forEach";id=Id_forEach; break L;
+                case 'i': X="indexOf";id=Id_indexOf; break L;
+                case 'r': X="reverse";id=Id_reverse; break L;
+                case 'u': X="unshift";id=Id_unshift; break L;
+                } break L;
+            case 8: c=s.charAt(3);
+                if (c=='o') { X="toSource";id=Id_toSource; }
+                else if (c=='t') { X="toString";id=Id_toString; }
+                break L;
+            case 11: c=s.charAt(0);
+                if (c=='c') { X="constructor";id=Id_constructor; }
+                else if (c=='l') { X="lastIndexOf";id=Id_lastIndexOf; }
+                break L;
+            case 14: X="toLocaleString";id=Id_toLocaleString; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+        }
+// #/generated#
+        return id;
+    }
+    
+    private static final int
+        Id_constructor          = 1,
+        Id_toString             = 2,
+        Id_toLocaleString       = 3,
+        Id_toSource             = 4,
+        Id_join                 = 5,
+        Id_reverse              = 6,
+        Id_sort                 = 7,
+        Id_push                 = 8,
+        Id_pop                  = 9,
+        Id_shift                = 10,
+        Id_unshift              = 11,
+        Id_splice               = 12,
+        Id_concat               = 13,
+        Id_slice                = 14,
+        Id_indexOf              = 15,
+        Id_lastIndexOf          = 16,
+        Id_every                = 17,
+        Id_filter               = 18,
+        Id_forEach              = 19,
+        Id_map                  = 20,
+        Id_some                 = 21,
+
+        MAX_PROTOTYPE_ID        = 21;
+
+// #/string_id_map#
+    
+    private static final int
+        ConstructorId_join                 = -Id_join,
+        ConstructorId_reverse              = -Id_reverse,
+        ConstructorId_sort                 = -Id_sort,
+        ConstructorId_push                 = -Id_push,
+        ConstructorId_pop                  = -Id_pop,
+        ConstructorId_shift                = -Id_shift,
+        ConstructorId_unshift              = -Id_unshift,
+        ConstructorId_splice               = -Id_splice,
+        ConstructorId_concat               = -Id_concat,
+        ConstructorId_slice                = -Id_slice,
+        ConstructorId_indexOf              = -Id_indexOf,
+        ConstructorId_lastIndexOf          = -Id_lastIndexOf,
+        ConstructorId_every                = -Id_every,
+        ConstructorId_filter               = -Id_filter,
+        ConstructorId_forEach              = -Id_forEach,
+        ConstructorId_map                  = -Id_map,
+        ConstructorId_some                 = -Id_some;
+
+    /**
+     * Internal representation of the JavaScript array's length property.
+     */
+    private long length;
+
+    /**
+     * Fast storage for dense arrays. Sparse arrays will use the superclass's
+     * hashtable storage scheme.
+     */
+    private Object[] dense;
+
+    /**
+     * True if all numeric properties are stored in <code>dense</code>.
+     */
+    private boolean denseOnly;
+
+    /**
+     * The maximum size of <code>dense</code> that will be allocated initially.
+     */
+    private static int maximumInitialCapacity = 10000;
+
+    /**
+     * The default capacity for <code>dense</code>.
+     */
+    private static final int DEFAULT_INITIAL_CAPACITY = 10;
+
+    /**
+     * The factor to grow <code>dense</code> by.
+     */
+    private static final double GROW_FACTOR = 1.5;
+    private static final int MAX_PRE_GROW_SIZE = (int)(Integer.MAX_VALUE / GROW_FACTOR);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeBoolean.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeBoolean.java
new file mode 100644
index 0000000..b6a106a
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeBoolean.java
@@ -0,0 +1,170 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements the Boolean native object.
+ * See ECMA 15.6.
+ * @author Norris Boyd
+ */
+final class NativeBoolean extends IdScriptableObject
+{
+    static final long serialVersionUID = -3716996899943880933L;
+
+    private static final Object BOOLEAN_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeBoolean obj = new NativeBoolean(false);
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    private NativeBoolean(boolean b)
+    {
+        booleanValue = b;
+    }
+
+    public String getClassName()
+    {
+        return "Boolean";
+    }
+
+    public Object getDefaultValue(Class typeHint) {
+        // This is actually non-ECMA, but will be proposed
+        // as a change in round 2.
+        if (typeHint == ScriptRuntime.BooleanClass)
+            return ScriptRuntime.wrapBoolean(booleanValue);
+        return super.getDefaultValue(typeHint);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor: arity=1; s="constructor"; break;
+          case Id_toString:    arity=0; s="toString";    break;
+          case Id_toSource:    arity=0; s="toSource";    break;
+          case Id_valueOf:     arity=0; s="valueOf";     break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(BOOLEAN_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(BOOLEAN_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+
+        if (id == Id_constructor) {
+            boolean b;
+            if (args.length == 0) {
+                b = false;
+            } else {
+                b = args[0] instanceof ScriptableObject &&
+                        ((ScriptableObject) args[0]).avoidObjectDetection()
+                    ? true
+                    : ScriptRuntime.toBoolean(args[0]);
+            }
+            if (thisObj == null) {
+                // new Boolean(val) creates a new boolean object.
+                return new NativeBoolean(b);
+            }
+            // Boolean(val) converts val to a boolean.
+            return ScriptRuntime.wrapBoolean(b);
+        }
+
+        // The rest of Boolean.prototype methods require thisObj to be Boolean
+
+        if (!(thisObj instanceof NativeBoolean))
+            throw incompatibleCallError(f);
+        boolean value = ((NativeBoolean)thisObj).booleanValue;
+
+        switch (id) {
+
+          case Id_toString:
+            return value ? "true" : "false";
+
+          case Id_toSource:
+            return value ? "(new Boolean(true))" : "(new Boolean(false))";
+
+          case Id_valueOf:
+            return ScriptRuntime.wrapBoolean(value);
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:15:31 EDT
+        L0: { id = 0; String X = null; int c;
+            int s_length = s.length();
+            if (s_length==7) { X="valueOf";id=Id_valueOf; }
+            else if (s_length==8) {
+                c=s.charAt(3);
+                if (c=='o') { X="toSource";id=Id_toSource; }
+                else if (c=='t') { X="toString";id=Id_toString; }
+            }
+            else if (s_length==11) { X="constructor";id=Id_constructor; }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor          = 1,
+        Id_toString             = 2,
+        Id_toSource             = 3,
+        Id_valueOf              = 4,
+        MAX_PROTOTYPE_ID        = 4;
+
+// #/string_id_map#
+
+    private boolean booleanValue;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeCall.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeCall.java
new file mode 100644
index 0000000..b196ac3
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeCall.java
@@ -0,0 +1,154 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Bob Jervis
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements the activation object.
+ *
+ * See ECMA 10.1.6
+ *
+ * @see org.mozilla.javascript.Arguments
+ * @author Norris Boyd
+ */
+public final class NativeCall extends IdScriptableObject
+{
+    static final long serialVersionUID = -7471457301304454454L;
+
+    private static final Object CALL_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeCall obj = new NativeCall();
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    NativeCall() { }
+
+    NativeCall(NativeFunction function, Scriptable scope, Object[] args)
+    {
+        this.function = function;
+
+        setParentScope(scope);
+        // leave prototype null
+
+        this.originalArgs = (args == null) ? ScriptRuntime.emptyArgs : args;
+
+        // initialize values of arguments
+        int paramAndVarCount = function.getParamAndVarCount();
+        int paramCount = function.getParamCount();
+        if (paramAndVarCount != 0) {
+            for (int i = 0; i < paramCount; ++i) {
+                String name = function.getParamOrVarName(i);
+                Object val = i < args.length ? args[i]
+                                             : Undefined.instance;
+                defineProperty(name, val, PERMANENT);
+            }
+        }
+
+        // initialize "arguments" property but only if it was not overridden by
+        // the parameter with the same name
+        if (!super.has("arguments", this)) {
+            defineProperty("arguments", new Arguments(this), PERMANENT);
+        }
+
+        if (paramAndVarCount != 0) {
+            for (int i = paramCount; i < paramAndVarCount; ++i) {
+                String name = function.getParamOrVarName(i);
+                if (!super.has(name, this)) {
+                    if (function.getParamOrVarConst(i))
+                        defineProperty(name, Undefined.instance, CONST);
+                    else
+                        defineProperty(name, Undefined.instance, PERMANENT);
+                }
+            }
+        }
+    }
+
+    public String getClassName()
+    {
+        return "Call";
+    }
+
+    protected int findPrototypeId(String s)
+    {
+        return s.equals("constructor") ? Id_constructor : 0;
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        if (id == Id_constructor) {
+            arity=1; s="constructor";
+        } else {
+            throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(CALL_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(CALL_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        if (id == Id_constructor) {
+            if (thisObj != null) {
+                throw Context.reportRuntimeError1("msg.only.from.new", "Call");
+            }
+            ScriptRuntime.checkDeprecated(cx, "Call");
+            NativeCall result = new NativeCall();
+            result.setPrototype(getObjectPrototype(scope));
+            return result;
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+    private static final int
+        Id_constructor   = 1,
+        MAX_PROTOTYPE_ID = 1;
+
+    NativeFunction function;
+    Object[] originalArgs;
+
+    transient NativeCall parentActivationCall;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeDate.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeDate.java
new file mode 100644
index 0000000..75d41ab
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeDate.java
@@ -0,0 +1,1604 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Peter Annema
+ *   Norris Boyd
+ *   Mike McCabe
+ *   Ilya Frank
+ *   
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.Date;
+import java.text.DateFormat;
+
+/**
+ * This class implements the Date native object.
+ * See ECMA 15.9.
+ * @author Mike McCabe
+ */
+final class NativeDate extends IdScriptableObject
+{
+    static final long serialVersionUID = -8307438915861678966L;
+
+    private static final Object DATE_TAG = new Object();
+
+    private static final String js_NaN_date_str = "Invalid Date";
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeDate obj = new NativeDate();
+        // Set the value of the prototype Date to NaN ('invalid date');
+        obj.date = ScriptRuntime.NaN;
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    private NativeDate()
+    {
+        if (thisTimeZone == null) {
+            // j.u.TimeZone is synchronized, so setting class statics from it
+            // should be OK.
+            thisTimeZone = java.util.TimeZone.getDefault();
+            LocalTZA = thisTimeZone.getRawOffset();
+        }
+    }
+
+    public String getClassName()
+    {
+        return "Date";
+    }
+
+    public Object getDefaultValue(Class typeHint)
+    {
+        if (typeHint == null)
+            typeHint = ScriptRuntime.StringClass;
+        return super.getDefaultValue(typeHint);
+    }
+
+    double getJSTimeValue()
+    {
+        return date;
+    }
+
+    protected void fillConstructorProperties(IdFunctionObject ctor)
+    {
+        addIdFunctionProperty(ctor, DATE_TAG, ConstructorId_now,
+                              "now", 0);
+        addIdFunctionProperty(ctor, DATE_TAG, ConstructorId_parse,
+                              "parse", 1);
+        addIdFunctionProperty(ctor, DATE_TAG, ConstructorId_UTC,
+                              "UTC", 1);
+        super.fillConstructorProperties(ctor);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor:        arity=1; s="constructor";        break;
+          case Id_toString:           arity=0; s="toString";           break;
+          case Id_toTimeString:       arity=0; s="toTimeString";       break;
+          case Id_toDateString:       arity=0; s="toDateString";       break;
+          case Id_toLocaleString:     arity=0; s="toLocaleString";     break;
+          case Id_toLocaleTimeString: arity=0; s="toLocaleTimeString"; break;
+          case Id_toLocaleDateString: arity=0; s="toLocaleDateString"; break;
+          case Id_toUTCString:        arity=0; s="toUTCString";        break;
+          case Id_toSource:           arity=0; s="toSource";           break;
+          case Id_valueOf:            arity=0; s="valueOf";            break;
+          case Id_getTime:            arity=0; s="getTime";            break;
+          case Id_getYear:            arity=0; s="getYear";            break;
+          case Id_getFullYear:        arity=0; s="getFullYear";        break;
+          case Id_getUTCFullYear:     arity=0; s="getUTCFullYear";     break;
+          case Id_getMonth:           arity=0; s="getMonth";           break;
+          case Id_getUTCMonth:        arity=0; s="getUTCMonth";        break;
+          case Id_getDate:            arity=0; s="getDate";            break;
+          case Id_getUTCDate:         arity=0; s="getUTCDate";         break;
+          case Id_getDay:             arity=0; s="getDay";             break;
+          case Id_getUTCDay:          arity=0; s="getUTCDay";          break;
+          case Id_getHours:           arity=0; s="getHours";           break;
+          case Id_getUTCHours:        arity=0; s="getUTCHours";        break;
+          case Id_getMinutes:         arity=0; s="getMinutes";         break;
+          case Id_getUTCMinutes:      arity=0; s="getUTCMinutes";      break;
+          case Id_getSeconds:         arity=0; s="getSeconds";         break;
+          case Id_getUTCSeconds:      arity=0; s="getUTCSeconds";      break;
+          case Id_getMilliseconds:    arity=0; s="getMilliseconds";    break;
+          case Id_getUTCMilliseconds: arity=0; s="getUTCMilliseconds"; break;
+          case Id_getTimezoneOffset:  arity=0; s="getTimezoneOffset";  break;
+          case Id_setTime:            arity=1; s="setTime";            break;
+          case Id_setMilliseconds:    arity=1; s="setMilliseconds";    break;
+          case Id_setUTCMilliseconds: arity=1; s="setUTCMilliseconds"; break;
+          case Id_setSeconds:         arity=2; s="setSeconds";         break;
+          case Id_setUTCSeconds:      arity=2; s="setUTCSeconds";      break;
+          case Id_setMinutes:         arity=3; s="setMinutes";         break;
+          case Id_setUTCMinutes:      arity=3; s="setUTCMinutes";      break;
+          case Id_setHours:           arity=4; s="setHours";           break;
+          case Id_setUTCHours:        arity=4; s="setUTCHours";        break;
+          case Id_setDate:            arity=1; s="setDate";            break;
+          case Id_setUTCDate:         arity=1; s="setUTCDate";         break;
+          case Id_setMonth:           arity=2; s="setMonth";           break;
+          case Id_setUTCMonth:        arity=2; s="setUTCMonth";        break;
+          case Id_setFullYear:        arity=3; s="setFullYear";        break;
+          case Id_setUTCFullYear:     arity=3; s="setUTCFullYear";     break;
+          case Id_setYear:            arity=1; s="setYear";            break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(DATE_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(DATE_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case ConstructorId_now:
+            return ScriptRuntime.wrapNumber(now());
+
+          case ConstructorId_parse:
+            {
+                String dataStr = ScriptRuntime.toString(args, 0);
+                return ScriptRuntime.wrapNumber(date_parseString(dataStr));
+            }
+
+          case ConstructorId_UTC:
+            return ScriptRuntime.wrapNumber(jsStaticFunction_UTC(args));
+
+          case Id_constructor:
+            {
+                // if called as a function, just return a string
+                // representing the current time.
+                if (thisObj != null)
+                    return date_format(now(), Id_toString);
+                return jsConstructor(args);
+            }
+        }
+
+        // The rest of Date.prototype methods require thisObj to be Date
+
+        if (!(thisObj instanceof NativeDate))
+            throw incompatibleCallError(f);
+        NativeDate realThis = (NativeDate)thisObj;
+        double t = realThis.date;
+
+        switch (id) {
+
+          case Id_toString:
+          case Id_toTimeString:
+          case Id_toDateString:
+            if (t == t) {
+                return date_format(t, id);
+            }
+            return js_NaN_date_str;
+
+          case Id_toLocaleString:
+          case Id_toLocaleTimeString:
+          case Id_toLocaleDateString:
+            if (t == t) {
+                return toLocale_helper(t, id);
+            }
+            return js_NaN_date_str;
+
+          case Id_toUTCString:
+            if (t == t) {
+                return js_toUTCString(t);
+            }
+            return js_NaN_date_str;
+
+          case Id_toSource:
+            return "(new Date("+ScriptRuntime.toString(t)+"))";
+
+          case Id_valueOf:
+          case Id_getTime:
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getYear:
+          case Id_getFullYear:
+          case Id_getUTCFullYear:
+            if (t == t) {
+                if (id != Id_getUTCFullYear) t = LocalTime(t);
+                t = YearFromTime(t);
+                if (id == Id_getYear) {
+                    if (cx.hasFeature(Context.FEATURE_NON_ECMA_GET_YEAR)) {
+                        if (1900 <= t && t < 2000) {
+                            t -= 1900;
+                        }
+                    } else {
+                        t -= 1900;
+                    }
+                }
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getMonth:
+          case Id_getUTCMonth:
+            if (t == t) {
+                if (id == Id_getMonth) t = LocalTime(t);
+                t = MonthFromTime(t);
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getDate:
+          case Id_getUTCDate:
+            if (t == t) {
+                if (id == Id_getDate) t = LocalTime(t);
+                t = DateFromTime(t);
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getDay:
+          case Id_getUTCDay:
+            if (t == t) {
+                if (id == Id_getDay) t = LocalTime(t);
+                t = WeekDay(t);
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getHours:
+          case Id_getUTCHours:
+            if (t == t) {
+                if (id == Id_getHours) t = LocalTime(t);
+                t = HourFromTime(t);
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getMinutes:
+          case Id_getUTCMinutes:
+            if (t == t) {
+                if (id == Id_getMinutes) t = LocalTime(t);
+                t = MinFromTime(t);
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getSeconds:
+          case Id_getUTCSeconds:
+            if (t == t) {
+                if (id == Id_getSeconds) t = LocalTime(t);
+                t = SecFromTime(t);
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getMilliseconds:
+          case Id_getUTCMilliseconds:
+            if (t == t) {
+                if (id == Id_getMilliseconds) t = LocalTime(t);
+                t = msFromTime(t);
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_getTimezoneOffset:
+            if (t == t) {
+                t = (t - LocalTime(t)) / msPerMinute;
+            }
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_setTime:
+            t = TimeClip(ScriptRuntime.toNumber(args, 0));
+            realThis.date = t;
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_setMilliseconds:
+          case Id_setUTCMilliseconds:
+          case Id_setSeconds:
+          case Id_setUTCSeconds:
+          case Id_setMinutes:
+          case Id_setUTCMinutes:
+          case Id_setHours:
+          case Id_setUTCHours:
+            t = makeTime(t, args, id);
+            realThis.date = t;
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_setDate:
+          case Id_setUTCDate:
+          case Id_setMonth:
+          case Id_setUTCMonth:
+          case Id_setFullYear:
+          case Id_setUTCFullYear:
+            t = makeDate(t, args, id);
+            realThis.date = t;
+            return ScriptRuntime.wrapNumber(t);
+
+          case Id_setYear:
+            {
+                double year = ScriptRuntime.toNumber(args, 0);
+
+                if (year != year || Double.isInfinite(year)) {
+                    t = ScriptRuntime.NaN;
+                } else {
+                    if (t != t) {
+                        t = 0;
+                    } else {
+                        t = LocalTime(t);
+                    }
+
+                    if (year >= 0 && year <= 99)
+                        year += 1900;
+
+                    double day = MakeDay(year, MonthFromTime(t),
+                                         DateFromTime(t));
+                    t = MakeDate(day, TimeWithinDay(t));
+                    t = internalUTC(t);
+                    t = TimeClip(t);
+                }
+            }
+            realThis.date = t;
+            return ScriptRuntime.wrapNumber(t);
+
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+
+    }
+
+    /* ECMA helper functions */
+
+    private static final double HalfTimeDomain = 8.64e15;
+    private static final double HoursPerDay    = 24.0;
+    private static final double MinutesPerHour = 60.0;
+    private static final double SecondsPerMinute = 60.0;
+    private static final double msPerSecond    = 1000.0;
+    private static final double MinutesPerDay  = (HoursPerDay * MinutesPerHour);
+    private static final double SecondsPerDay  = (MinutesPerDay * SecondsPerMinute);
+    private static final double SecondsPerHour = (MinutesPerHour * SecondsPerMinute);
+    private static final double msPerDay       = (SecondsPerDay * msPerSecond);
+    private static final double msPerHour      = (SecondsPerHour * msPerSecond);
+    private static final double msPerMinute    = (SecondsPerMinute * msPerSecond);
+
+    private static double Day(double t)
+    {
+        return Math.floor(t / msPerDay);
+    }
+
+    private static double TimeWithinDay(double t)
+    {
+        double result;
+        result = t % msPerDay;
+        if (result < 0)
+            result += msPerDay;
+        return result;
+    }
+
+    private static boolean IsLeapYear(int year)
+    {
+        return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
+    }
+
+    /* math here has to be f.p, because we need
+     *  floor((1968 - 1969) / 4) == -1
+     */
+    private static double DayFromYear(double y)
+    {
+        return ((365 * ((y)-1970) + Math.floor(((y)-1969)/4.0)
+                 - Math.floor(((y)-1901)/100.0) + Math.floor(((y)-1601)/400.0)));
+    }
+
+    private static double TimeFromYear(double y)
+    {
+        return DayFromYear(y) * msPerDay;
+    }
+
+    private static int YearFromTime(double t)
+    {
+        int lo = (int) Math.floor((t / msPerDay) / 366) + 1970;
+        int hi = (int) Math.floor((t / msPerDay) / 365) + 1970;
+        int mid;
+
+        /* above doesn't work for negative dates... */
+        if (hi < lo) {
+            int temp = lo;
+            lo = hi;
+            hi = temp;
+        }
+
+        /* Use a simple binary search algorithm to find the right
+           year.  This seems like brute force... but the computation
+           of hi and lo years above lands within one year of the
+           correct answer for years within a thousand years of
+           1970; the loop below only requires six iterations
+           for year 270000. */
+        while (hi > lo) {
+            mid = (hi + lo) / 2;
+            if (TimeFromYear(mid) > t) {
+                hi = mid - 1;
+            } else {
+                lo = mid + 1;
+                if (TimeFromYear(lo) > t) {
+                    return mid;
+                }
+            }
+        }
+        return lo;
+    }
+
+    private static double DayFromMonth(int m, int year)
+    {
+        int day = m * 30;
+
+        if (m >= 7) { day += m / 2 - 1; }
+        else if (m >= 2) { day += (m - 1) / 2 - 1; }
+        else { day += m; }
+
+        if (m >= 2 && IsLeapYear(year)) { ++day; }
+
+        return day;
+    }
+
+    private static int MonthFromTime(double t)
+    {
+        int year = YearFromTime(t);
+        int d = (int)(Day(t) - DayFromYear(year));
+
+        d -= 31 + 28;
+        if (d < 0) {
+            return (d < -28) ? 0 : 1;
+        }
+
+        if (IsLeapYear(year)) {
+            if (d == 0)
+                return 1; // 29 February
+            --d;
+        }
+
+        // d: date count from 1 March
+        int estimate = d / 30; // approx number of month since March
+        int mstart;
+        switch (estimate) {
+            case 0: return 2;
+            case 1: mstart = 31; break;
+            case 2: mstart = 31+30; break;
+            case 3: mstart = 31+30+31; break;
+            case 4: mstart = 31+30+31+30; break;
+            case 5: mstart = 31+30+31+30+31; break;
+            case 6: mstart = 31+30+31+30+31+31; break;
+            case 7: mstart = 31+30+31+30+31+31+30; break;
+            case 8: mstart = 31+30+31+30+31+31+30+31; break;
+            case 9: mstart = 31+30+31+30+31+31+30+31+30; break;
+            case 10: return 11; //Late december
+            default: throw Kit.codeBug();
+        }
+        // if d < mstart then real month since March == estimate - 1
+        return (d >= mstart) ? estimate + 2 : estimate + 1;
+    }
+
+    private static int DateFromTime(double t)
+    {
+        int year = YearFromTime(t);
+        int d = (int)(Day(t) - DayFromYear(year));
+
+        d -= 31 + 28;
+        if (d < 0) {
+            return (d < -28) ? d + 31 + 28 + 1 : d + 28 + 1;
+        }
+
+        if (IsLeapYear(year)) {
+            if (d == 0)
+                return 29; // 29 February
+            --d;
+        }
+
+        // d: date count from 1 March
+        int mdays, mstart;
+        switch (d / 30) { // approx number of month since March
+            case 0: return d + 1;
+            case 1: mdays = 31; mstart = 31; break;
+            case 2: mdays = 30; mstart = 31+30; break;
+            case 3: mdays = 31; mstart = 31+30+31; break;
+            case 4: mdays = 30; mstart = 31+30+31+30; break;
+            case 5: mdays = 31; mstart = 31+30+31+30+31; break;
+            case 6: mdays = 31; mstart = 31+30+31+30+31+31; break;
+            case 7: mdays = 30; mstart = 31+30+31+30+31+31+30; break;
+            case 8: mdays = 31; mstart = 31+30+31+30+31+31+30+31; break;
+            case 9: mdays = 30; mstart = 31+30+31+30+31+31+30+31+30; break;
+            case 10:
+                return d - (31+30+31+30+31+31+30+31+30) + 1; //Late december
+            default: throw Kit.codeBug();
+        }
+        d -= mstart;
+        if (d < 0) {
+            // wrong estimate: sfhift to previous month
+            d += mdays;
+        }
+        return d + 1;
+     }
+
+    private static int WeekDay(double t)
+    {
+        double result;
+        result = Day(t) + 4;
+        result = result % 7;
+        if (result < 0)
+            result += 7;
+        return (int) result;
+    }
+
+    private static double now()
+    {
+        return System.currentTimeMillis();
+    }
+
+    /* Should be possible to determine the need for this dynamically
+     * if we go with the workaround... I'm not using it now, because I
+     * can't think of any clean way to make toLocaleString() and the
+     * time zone (comment) in toString match the generated string
+     * values.  Currently it's wrong-but-consistent in all but the
+     * most recent betas of the JRE - seems to work in 1.1.7.
+     */
+    private final static boolean TZO_WORKAROUND = false;
+    private static double DaylightSavingTA(double t)
+    {
+        // Another workaround!  The JRE doesn't seem to know about DST
+        // before year 1 AD, so we map to equivalent dates for the
+        // purposes of finding dst.  To be safe, we do this for years
+        // outside 1970-2038.
+        if (t < 0.0 || t > 2145916800000.0) {
+            int year = EquivalentYear(YearFromTime(t));
+            double day = MakeDay(year, MonthFromTime(t), DateFromTime(t));
+            t = MakeDate(day, TimeWithinDay(t));
+        }
+        if (!TZO_WORKAROUND) {
+            Date date = new Date((long) t);
+            if (thisTimeZone.inDaylightTime(date))
+                return msPerHour;
+            else
+                return 0;
+        } else {
+            /* Use getOffset if inDaylightTime() is broken, because it
+             * seems to work acceptably.  We don't switch over to it
+             * entirely, because it requires (expensive) exploded date arguments,
+             * and the api makes it impossible to handle dst
+             * changeovers cleanly.
+             */
+
+            // Hardcode the assumption that the changeover always
+            // happens at 2:00 AM:
+            t += LocalTZA + (HourFromTime(t) <= 2 ? msPerHour : 0);
+
+            int year = YearFromTime(t);
+            double offset = thisTimeZone.getOffset(year > 0 ? 1 : 0,
+                                                   year,
+                                                   MonthFromTime(t),
+                                                   DateFromTime(t),
+                                                   WeekDay(t),
+                                                   (int)TimeWithinDay(t));
+
+            if ((offset - LocalTZA) != 0)
+                return msPerHour;
+            else
+                return 0;
+            //         return offset - LocalTZA;
+        }
+    }
+
+    /*
+     * Find a year for which any given date will fall on the same weekday.
+     *
+     * This function should be used with caution when used other than
+     * for determining DST; it hasn't been proven not to produce an
+     * incorrect year for times near year boundaries.
+     */
+    private static int EquivalentYear(int year)
+    {
+        int day = (int) DayFromYear(year) + 4;
+        day = day % 7;
+        if (day < 0)
+            day += 7;
+        // Years and leap years on which Jan 1 is a Sunday, Monday, etc.
+        if (IsLeapYear(year)) {
+            switch (day) {
+                case 0: return 1984;
+                case 1: return 1996;
+                case 2: return 1980;
+                case 3: return 1992;
+                case 4: return 1976;
+                case 5: return 1988;
+                case 6: return 1972;
+            }
+        } else {
+            switch (day) {
+                case 0: return 1978;
+                case 1: return 1973;
+                case 2: return 1974;
+                case 3: return 1975;
+                case 4: return 1981;
+                case 5: return 1971;
+                case 6: return 1977;
+            }
+        }
+        // Unreachable
+        throw Kit.codeBug();
+    }
+
+    private static double LocalTime(double t)
+    {
+        return t + LocalTZA + DaylightSavingTA(t);
+    }
+
+    private static double internalUTC(double t)
+    {
+        return t - LocalTZA - DaylightSavingTA(t - LocalTZA);
+    }
+
+    private static int HourFromTime(double t)
+    {
+        double result;
+        result = Math.floor(t / msPerHour) % HoursPerDay;
+        if (result < 0)
+            result += HoursPerDay;
+        return (int) result;
+    }
+
+    private static int MinFromTime(double t)
+    {
+        double result;
+        result = Math.floor(t / msPerMinute) % MinutesPerHour;
+        if (result < 0)
+            result += MinutesPerHour;
+        return (int) result;
+    }
+
+    private static int SecFromTime(double t)
+    {
+        double result;
+        result = Math.floor(t / msPerSecond) % SecondsPerMinute;
+        if (result < 0)
+            result += SecondsPerMinute;
+        return (int) result;
+    }
+
+    private static int msFromTime(double t)
+    {
+        double result;
+        result =  t % msPerSecond;
+        if (result < 0)
+            result += msPerSecond;
+        return (int) result;
+    }
+
+    private static double MakeTime(double hour, double min,
+                                   double sec, double ms)
+    {
+        return ((hour * MinutesPerHour + min) * SecondsPerMinute + sec)
+            * msPerSecond + ms;
+    }
+
+    private static double MakeDay(double year, double month, double date)
+    {
+        year += Math.floor(month / 12);
+
+        month = month % 12;
+        if (month < 0)
+            month += 12;
+
+        double yearday = Math.floor(TimeFromYear(year) / msPerDay);
+        double monthday = DayFromMonth((int)month, (int)year);
+
+        return yearday + monthday + date - 1;
+    }
+
+    private static double MakeDate(double day, double time)
+    {
+        return day * msPerDay + time;
+    }
+
+    private static double TimeClip(double d)
+    {
+        if (d != d ||
+            d == Double.POSITIVE_INFINITY ||
+            d == Double.NEGATIVE_INFINITY ||
+            Math.abs(d) > HalfTimeDomain)
+        {
+            return ScriptRuntime.NaN;
+        }
+        if (d > 0.0)
+            return Math.floor(d + 0.);
+        else
+            return Math.ceil(d + 0.);
+    }
+
+    /* end of ECMA helper functions */
+
+    /* find UTC time from given date... no 1900 correction! */
+    private static double date_msecFromDate(double year, double mon,
+                                            double mday, double hour,
+                                            double min, double sec,
+                                            double msec)
+    {
+        double day;
+        double time;
+        double result;
+
+        day = MakeDay(year, mon, mday);
+        time = MakeTime(hour, min, sec, msec);
+        result = MakeDate(day, time);
+        return result;
+    }
+
+    /* compute the time in msec (unclipped) from the given args */
+    private static final int MAXARGS = 7;
+    private static double date_msecFromArgs(Object[] args)
+    {
+        double array[] = new double[MAXARGS];
+        int loop;
+        double d;
+
+        for (loop = 0; loop < MAXARGS; loop++) {
+            if (loop < args.length) {
+                d = ScriptRuntime.toNumber(args[loop]);
+                if (d != d || Double.isInfinite(d)) {
+                    return ScriptRuntime.NaN;
+                }
+                array[loop] = ScriptRuntime.toInteger(args[loop]);
+            } else {
+                if (loop == 2) {
+                    array[loop] = 1; /* Default the date argument to 1. */
+                } else {
+                    array[loop] = 0;
+                }
+            }
+        }
+
+        /* adjust 2-digit years into the 20th century */
+        if (array[0] >= 0 && array[0] <= 99)
+            array[0] += 1900;
+
+        return date_msecFromDate(array[0], array[1], array[2],
+                                 array[3], array[4], array[5], array[6]);
+    }
+
+    private static double jsStaticFunction_UTC(Object[] args)
+    {
+        return TimeClip(date_msecFromArgs(args));
+    }
+
+    private static double date_parseString(String s)
+    {
+        int year = -1;
+        int mon = -1;
+        int mday = -1;
+        int hour = -1;
+        int min = -1;
+        int sec = -1;
+        char c = 0;
+        char si = 0;
+        int i = 0;
+        int n = -1;
+        double tzoffset = -1;
+        char prevc = 0;
+        int limit = 0;
+        boolean seenplusminus = false;
+
+        limit = s.length();
+        while (i < limit) {
+            c = s.charAt(i);
+            i++;
+            if (c <= ' ' || c == ',' || c == '-') {
+                if (i < limit) {
+                    si = s.charAt(i);
+                    if (c == '-' && '0' <= si && si <= '9') {
+                        prevc = c;
+                    }
+                }
+                continue;
+            }
+            if (c == '(') { /* comments) */
+                int depth = 1;
+                while (i < limit) {
+                    c = s.charAt(i);
+                    i++;
+                    if (c == '(')
+                        depth++;
+                    else if (c == ')')
+                        if (--depth <= 0)
+                            break;
+                }
+                continue;
+            }
+            if ('0' <= c && c <= '9') {
+                n = c - '0';
+                while (i < limit && '0' <= (c = s.charAt(i)) && c <= '9') {
+                    n = n * 10 + c - '0';
+                    i++;
+                }
+
+                /* allow TZA before the year, so
+                 * 'Wed Nov 05 21:49:11 GMT-0800 1997'
+                 * works */
+
+                /* uses of seenplusminus allow : in TZA, so Java
+                 * no-timezone style of GMT+4:30 works
+                 */
+                if ((prevc == '+' || prevc == '-')/*  && year>=0 */) {
+                    /* make ':' case below change tzoffset */
+                    seenplusminus = true;
+
+                    /* offset */
+                    if (n < 24)
+                        n = n * 60; /* EG. "GMT-3" */
+                    else
+                        n = n % 100 + n / 100 * 60; /* eg "GMT-0430" */
+                    if (prevc == '+')       /* plus means east of GMT */
+                        n = -n;
+                    if (tzoffset != 0 && tzoffset != -1)
+                        return ScriptRuntime.NaN;
+                    tzoffset = n;
+                } else if (n >= 70  ||
+                           (prevc == '/' && mon >= 0 && mday >= 0
+                            && year < 0))
+                {
+                    if (year >= 0)
+                        return ScriptRuntime.NaN;
+                    else if (c <= ' ' || c == ',' || c == '/' || i >= limit)
+                        year = n < 100 ? n + 1900 : n;
+                    else
+                        return ScriptRuntime.NaN;
+                } else if (c == ':') {
+                    if (hour < 0)
+                        hour = /*byte*/ n;
+                    else if (min < 0)
+                        min = /*byte*/ n;
+                    else
+                        return ScriptRuntime.NaN;
+                } else if (c == '/') {
+                    if (mon < 0)
+                        mon = /*byte*/ n-1;
+                    else if (mday < 0)
+                        mday = /*byte*/ n;
+                    else
+                        return ScriptRuntime.NaN;
+                } else if (i < limit && c != ',' && c > ' ' && c != '-') {
+                    return ScriptRuntime.NaN;
+                } else if (seenplusminus && n < 60) {  /* handle GMT-3:30 */
+                    if (tzoffset < 0)
+                        tzoffset -= n;
+                    else
+                        tzoffset += n;
+                } else if (hour >= 0 && min < 0) {
+                    min = /*byte*/ n;
+                } else if (min >= 0 && sec < 0) {
+                    sec = /*byte*/ n;
+                } else if (mday < 0) {
+                    mday = /*byte*/ n;
+                } else {
+                    return ScriptRuntime.NaN;
+                }
+                prevc = 0;
+            } else if (c == '/' || c == ':' || c == '+' || c == '-') {
+                prevc = c;
+            } else {
+                int st = i - 1;
+                while (i < limit) {
+                    c = s.charAt(i);
+                    if (!(('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z')))
+                        break;
+                    i++;
+                }
+                int letterCount = i - st;
+                if (letterCount < 2)
+                    return ScriptRuntime.NaN;
+               /*
+                * Use ported code from jsdate.c rather than the locale-specific
+                * date-parsing code from Java, to keep js and rhino consistent.
+                * Is this the right strategy?
+                */
+                String wtb = "am;pm;"
+                            +"monday;tuesday;wednesday;thursday;friday;"
+                            +"saturday;sunday;"
+                            +"january;february;march;april;may;june;"
+                            +"july;august;september;october;november;december;"
+                            +"gmt;ut;utc;est;edt;cst;cdt;mst;mdt;pst;pdt;";
+                int index = 0;
+                for (int wtbOffset = 0; ;) {
+                    int wtbNext = wtb.indexOf(';', wtbOffset);
+                    if (wtbNext < 0)
+                        return ScriptRuntime.NaN;
+                    if (wtb.regionMatches(true, wtbOffset, s, st, letterCount))
+                        break;
+                    wtbOffset = wtbNext + 1;
+                    ++index;
+                }
+                if (index < 2) {
+                    /*
+                     * AM/PM. Count 12:30 AM as 00:30, 12:30 PM as
+                     * 12:30, instead of blindly adding 12 if PM.
+                     */
+                    if (hour > 12 || hour < 0) {
+                        return ScriptRuntime.NaN;
+                    } else if (index == 0) {
+                        // AM
+                        if (hour == 12)
+                            hour = 0;
+                    } else {
+                        // PM
+                        if (hour != 12)
+                            hour += 12;
+                    }
+                } else if ((index -= 2) < 7) {
+                    // ignore week days
+                } else if ((index -= 7) < 12) {
+                    // month
+                    if (mon < 0) {
+                        mon = index;
+                    } else {
+                        return ScriptRuntime.NaN;
+                    }
+                } else {
+                    index -= 12;
+                    // timezones
+                    switch (index) {
+                      case 0 /* gmt */: tzoffset = 0; break;
+                      case 1 /* ut */:  tzoffset = 0; break;
+                      case 2 /* utc */: tzoffset = 0; break;
+                      case 3 /* est */: tzoffset = 5 * 60; break;
+                      case 4 /* edt */: tzoffset = 4 * 60; break;
+                      case 5 /* cst */: tzoffset = 6 * 60; break;
+                      case 6 /* cdt */: tzoffset = 5 * 60; break;
+                      case 7 /* mst */: tzoffset = 7 * 60; break;
+                      case 8 /* mdt */: tzoffset = 6 * 60; break;
+                      case 9 /* pst */: tzoffset = 8 * 60; break;
+                      case 10 /* pdt */:tzoffset = 7 * 60; break;
+                      default: Kit.codeBug();
+                    }
+                }
+            }
+        }
+        if (year < 0 || mon < 0 || mday < 0)
+            return ScriptRuntime.NaN;
+        if (sec < 0)
+            sec = 0;
+        if (min < 0)
+            min = 0;
+        if (hour < 0)
+            hour = 0;
+
+        double msec = date_msecFromDate(year, mon, mday, hour, min, sec, 0);
+        if (tzoffset == -1) { /* no time zone specified, have to use local */
+            return internalUTC(msec);
+        } else {
+            return msec + tzoffset * msPerMinute;
+        }
+    }
+
+    private static String date_format(double t, int methodId)
+    {
+        StringBuffer result = new StringBuffer(60);
+        double local = LocalTime(t);
+
+        /* Tue Oct 31 09:41:40 GMT-0800 (PST) 2000 */
+        /* Tue Oct 31 2000 */
+        /* 09:41:40 GMT-0800 (PST) */
+
+        if (methodId != Id_toTimeString) {
+            appendWeekDayName(result, WeekDay(local));
+            result.append(' ');
+            appendMonthName(result, MonthFromTime(local));
+            result.append(' ');
+            append0PaddedUint(result, DateFromTime(local), 2);
+            result.append(' ');
+            int year = YearFromTime(local);
+            if (year < 0) {
+                result.append('-');
+                year = -year;
+            }
+            append0PaddedUint(result, year, 4);
+            if (methodId != Id_toDateString)
+                result.append(' ');
+        }
+
+        if (methodId != Id_toDateString) {
+            append0PaddedUint(result, HourFromTime(local), 2);
+            result.append(':');
+            append0PaddedUint(result, MinFromTime(local), 2);
+            result.append(':');
+            append0PaddedUint(result, SecFromTime(local), 2);
+
+            // offset from GMT in minutes.  The offset includes daylight
+            // savings, if it applies.
+            int minutes = (int) Math.floor((LocalTZA + DaylightSavingTA(t))
+                                           / msPerMinute);
+            // map 510 minutes to 0830 hours
+            int offset = (minutes / 60) * 100 + minutes % 60;
+            if (offset > 0) {
+                result.append(" GMT+");
+            } else {
+                result.append(" GMT-");
+                offset = -offset;
+            }
+            append0PaddedUint(result, offset, 4);
+
+            if (timeZoneFormatter == null)
+                timeZoneFormatter = new java.text.SimpleDateFormat("zzz");
+
+            // Find an equivalent year before getting the timezone
+            // comment.  See DaylightSavingTA.
+            if (t < 0.0 || t > 2145916800000.0) {
+                int equiv = EquivalentYear(YearFromTime(local));
+                double day = MakeDay(equiv, MonthFromTime(t), DateFromTime(t));
+                t = MakeDate(day, TimeWithinDay(t));
+             }
+            result.append(" (");
+            java.util.Date date = new Date((long) t);
+            synchronized (timeZoneFormatter) {
+                result.append(timeZoneFormatter.format(date));
+            }
+            result.append(')');
+        }
+        return result.toString();
+    }
+
+    /* the javascript constructor */
+    private static Object jsConstructor(Object[] args)
+    {
+        NativeDate obj = new NativeDate();
+
+        // if called as a constructor with no args,
+        // return a new Date with the current time.
+        if (args.length == 0) {
+            obj.date = now();
+            return obj;
+        }
+
+        // if called with just one arg -
+        if (args.length == 1) {
+            Object arg0 = args[0];
+            if (arg0 instanceof Scriptable)
+                arg0 = ((Scriptable) arg0).getDefaultValue(null);
+            double date;
+            if (arg0 instanceof String) {
+                // it's a string; parse it.
+                date = date_parseString((String)arg0);
+            } else {
+                // if it's not a string, use it as a millisecond date
+                date = ScriptRuntime.toNumber(arg0);
+            }
+            obj.date = TimeClip(date);
+            return obj;
+        }
+
+        double time = date_msecFromArgs(args);
+
+        if (!Double.isNaN(time) && !Double.isInfinite(time))
+            time = TimeClip(internalUTC(time));
+
+        obj.date = time;
+
+        return obj;
+    }
+
+    private static String toLocale_helper(double t, int methodId)
+    {
+        java.text.DateFormat formatter;
+        switch (methodId) {
+          case Id_toLocaleString:
+            if (localeDateTimeFormatter == null) {
+                localeDateTimeFormatter
+                    = DateFormat.getDateTimeInstance(DateFormat.LONG,
+                                                     DateFormat.LONG);
+            }
+            formatter = localeDateTimeFormatter;
+            break;
+          case Id_toLocaleTimeString:
+            if (localeTimeFormatter == null) {
+                localeTimeFormatter
+                    = DateFormat.getTimeInstance(DateFormat.LONG);
+            }
+            formatter = localeTimeFormatter;
+            break;
+          case Id_toLocaleDateString:
+            if (localeDateFormatter == null) {
+                localeDateFormatter
+                    = DateFormat.getDateInstance(DateFormat.LONG);
+            }
+            formatter = localeDateFormatter;
+            break;
+          default: formatter = null; // unreachable
+        }
+
+        synchronized (formatter) {
+            return formatter.format(new Date((long) t));
+        }
+    }
+
+    private static String js_toUTCString(double date)
+    {
+        StringBuffer result = new StringBuffer(60);
+
+        appendWeekDayName(result, WeekDay(date));
+        result.append(", ");
+        append0PaddedUint(result, DateFromTime(date), 2);
+        result.append(' ');
+        appendMonthName(result, MonthFromTime(date));
+        result.append(' ');
+        int year = YearFromTime(date);
+        if (year < 0) {
+            result.append('-'); year = -year;
+        }
+        append0PaddedUint(result, year, 4);
+        result.append(' ');
+        append0PaddedUint(result, HourFromTime(date), 2);
+        result.append(':');
+        append0PaddedUint(result, MinFromTime(date), 2);
+        result.append(':');
+        append0PaddedUint(result, SecFromTime(date), 2);
+        result.append(" GMT");
+        return result.toString();
+    }
+
+    private static void append0PaddedUint(StringBuffer sb, int i, int minWidth)
+    {
+        if (i < 0) Kit.codeBug();
+        int scale = 1;
+        --minWidth;
+        if (i >= 10) {
+            if (i < 1000 * 1000 * 1000) {
+                for (;;) {
+                    int newScale = scale * 10;
+                    if (i < newScale) { break; }
+                    --minWidth;
+                    scale = newScale;
+                }
+            } else {
+                // Separated case not to check against 10 * 10^9 overflow
+                minWidth -= 9;
+                scale = 1000 * 1000 * 1000;
+            }
+        }
+        while (minWidth > 0) {
+            sb.append('0');
+            --minWidth;
+        }
+        while (scale != 1) {
+            sb.append((char)('0' + (i / scale)));
+            i %= scale;
+            scale /= 10;
+        }
+        sb.append((char)('0' + i));
+    }
+
+    private static void appendMonthName(StringBuffer sb, int index)
+    {
+        // Take advantage of the fact that all month abbreviations
+        // have the same length to minimize amount of strings runtime has
+        // to keep in memory
+        String months = "Jan"+"Feb"+"Mar"+"Apr"+"May"+"Jun"
+                       +"Jul"+"Aug"+"Sep"+"Oct"+"Nov"+"Dec";
+        index *= 3;
+        for (int i = 0; i != 3; ++i) {
+            sb.append(months.charAt(index + i));
+        }
+    }
+
+    private static void appendWeekDayName(StringBuffer sb, int index)
+    {
+        String days = "Sun"+"Mon"+"Tue"+"Wed"+"Thu"+"Fri"+"Sat";
+        index *= 3;
+        for (int i = 0; i != 3; ++i) {
+            sb.append(days.charAt(index + i));
+        }
+    }
+
+    private static double makeTime(double date, Object[] args, int methodId)
+    {
+        int maxargs;
+        boolean local = true;
+        switch (methodId) {
+          case Id_setUTCMilliseconds:
+              local = false;
+            // fallthrough
+          case Id_setMilliseconds:
+            maxargs = 1;
+            break;
+
+          case Id_setUTCSeconds:
+              local = false;
+            // fallthrough
+          case Id_setSeconds:
+            maxargs = 2;
+            break;
+
+          case Id_setUTCMinutes:
+              local = false;
+            // fallthrough
+          case Id_setMinutes:
+            maxargs = 3;
+            break;
+
+          case Id_setUTCHours:
+              local = false;
+            // fallthrough
+          case Id_setHours:
+            maxargs = 4;
+            break;
+
+          default:
+              Kit.codeBug();
+            maxargs = 0;
+        }
+
+        int i;
+        double conv[] = new double[4];
+        double hour, min, sec, msec;
+        double lorutime; /* Local or UTC version of date */
+
+        double time;
+        double result;
+
+        /* just return NaN if the date is already NaN */
+        if (date != date)
+            return date;
+
+        /* Satisfy the ECMA rule that if a function is called with
+         * fewer arguments than the specified formal arguments, the
+         * remaining arguments are set to undefined.  Seems like all
+         * the Date.setWhatever functions in ECMA are only varargs
+         * beyond the first argument; this should be set to undefined
+         * if it's not given.  This means that "d = new Date();
+         * d.setMilliseconds()" returns NaN.  Blech.
+         */
+        if (args.length == 0)
+            args = ScriptRuntime.padArguments(args, 1);
+
+        for (i = 0; i < args.length && i < maxargs; i++) {
+            conv[i] = ScriptRuntime.toNumber(args[i]);
+
+            // limit checks that happen in MakeTime in ECMA.
+            if (conv[i] != conv[i] || Double.isInfinite(conv[i])) {
+                return ScriptRuntime.NaN;
+            }
+            conv[i] = ScriptRuntime.toInteger(conv[i]);
+        }
+
+        if (local)
+            lorutime = LocalTime(date);
+        else
+            lorutime = date;
+
+        i = 0;
+        int stop = args.length;
+
+        if (maxargs >= 4 && i < stop)
+            hour = conv[i++];
+        else
+            hour = HourFromTime(lorutime);
+
+        if (maxargs >= 3 && i < stop)
+            min = conv[i++];
+        else
+            min = MinFromTime(lorutime);
+
+        if (maxargs >= 2 && i < stop)
+            sec = conv[i++];
+        else
+            sec = SecFromTime(lorutime);
+
+        if (maxargs >= 1 && i < stop)
+            msec = conv[i++];
+        else
+            msec = msFromTime(lorutime);
+
+        time = MakeTime(hour, min, sec, msec);
+        result = MakeDate(Day(lorutime), time);
+
+        if (local)
+            result = internalUTC(result);
+        date = TimeClip(result);
+
+        return date;
+    }
+
+    private static double makeDate(double date, Object[] args, int methodId)
+    {
+        int maxargs;
+        boolean local = true;
+        switch (methodId) {
+          case Id_setUTCDate:
+              local = false;
+            // fallthrough
+          case Id_setDate:
+              maxargs = 1;
+            break;
+
+          case Id_setUTCMonth:
+              local = false;
+            // fallthrough
+          case Id_setMonth:
+              maxargs = 2;
+            break;
+
+          case Id_setUTCFullYear:
+              local = false;
+            // fallthrough
+          case Id_setFullYear:
+              maxargs = 3;
+            break;
+
+          default:
+              Kit.codeBug();
+            maxargs = 0;
+        }
+
+        int i;
+        double conv[] = new double[3];
+        double year, month, day;
+        double lorutime; /* local or UTC version of date */
+        double result;
+
+        /* See arg padding comment in makeTime.*/
+        if (args.length == 0)
+            args = ScriptRuntime.padArguments(args, 1);
+
+        for (i = 0; i < args.length && i < maxargs; i++) {
+            conv[i] = ScriptRuntime.toNumber(args[i]);
+
+            // limit checks that happen in MakeDate in ECMA.
+            if (conv[i] != conv[i] || Double.isInfinite(conv[i])) {
+                return ScriptRuntime.NaN;
+            }
+            conv[i] = ScriptRuntime.toInteger(conv[i]);
+        }
+
+        /* return NaN if date is NaN and we're not setting the year,
+         * If we are, use 0 as the time. */
+        if (date != date) {
+            if (args.length < 3) {
+                return ScriptRuntime.NaN;
+            } else {
+                lorutime = 0;
+            }
+        } else {
+            if (local)
+                lorutime = LocalTime(date);
+            else
+                lorutime = date;
+        }
+
+        i = 0;
+        int stop = args.length;
+
+        if (maxargs >= 3 && i < stop)
+            year = conv[i++];
+        else
+            year = YearFromTime(lorutime);
+
+        if (maxargs >= 2 && i < stop)
+            month = conv[i++];
+        else
+            month = MonthFromTime(lorutime);
+
+        if (maxargs >= 1 && i < stop)
+            day = conv[i++];
+        else
+            day = DateFromTime(lorutime);
+
+        day = MakeDay(year, month, day); /* day within year */
+        result = MakeDate(day, TimeWithinDay(lorutime));
+
+        if (local)
+            result = internalUTC(result);
+
+        date = TimeClip(result);
+
+        return date;
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:15:38 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 6: X="getDay";id=Id_getDay; break L;
+            case 7: switch (s.charAt(3)) {
+                case 'D': c=s.charAt(0);
+                    if (c=='g') { X="getDate";id=Id_getDate; }
+                    else if (c=='s') { X="setDate";id=Id_setDate; }
+                    break L;
+                case 'T': c=s.charAt(0);
+                    if (c=='g') { X="getTime";id=Id_getTime; }
+                    else if (c=='s') { X="setTime";id=Id_setTime; }
+                    break L;
+                case 'Y': c=s.charAt(0);
+                    if (c=='g') { X="getYear";id=Id_getYear; }
+                    else if (c=='s') { X="setYear";id=Id_setYear; }
+                    break L;
+                case 'u': X="valueOf";id=Id_valueOf; break L;
+                } break L;
+            case 8: switch (s.charAt(3)) {
+                case 'H': c=s.charAt(0);
+                    if (c=='g') { X="getHours";id=Id_getHours; }
+                    else if (c=='s') { X="setHours";id=Id_setHours; }
+                    break L;
+                case 'M': c=s.charAt(0);
+                    if (c=='g') { X="getMonth";id=Id_getMonth; }
+                    else if (c=='s') { X="setMonth";id=Id_setMonth; }
+                    break L;
+                case 'o': X="toSource";id=Id_toSource; break L;
+                case 't': X="toString";id=Id_toString; break L;
+                } break L;
+            case 9: X="getUTCDay";id=Id_getUTCDay; break L;
+            case 10: c=s.charAt(3);
+                if (c=='M') {
+                    c=s.charAt(0);
+                    if (c=='g') { X="getMinutes";id=Id_getMinutes; }
+                    else if (c=='s') { X="setMinutes";id=Id_setMinutes; }
+                }
+                else if (c=='S') {
+                    c=s.charAt(0);
+                    if (c=='g') { X="getSeconds";id=Id_getSeconds; }
+                    else if (c=='s') { X="setSeconds";id=Id_setSeconds; }
+                }
+                else if (c=='U') {
+                    c=s.charAt(0);
+                    if (c=='g') { X="getUTCDate";id=Id_getUTCDate; }
+                    else if (c=='s') { X="setUTCDate";id=Id_setUTCDate; }
+                }
+                break L;
+            case 11: switch (s.charAt(3)) {
+                case 'F': c=s.charAt(0);
+                    if (c=='g') { X="getFullYear";id=Id_getFullYear; }
+                    else if (c=='s') { X="setFullYear";id=Id_setFullYear; }
+                    break L;
+                case 'M': X="toGMTString";id=Id_toGMTString; break L;
+                case 'T': X="toUTCString";id=Id_toUTCString; break L;
+                case 'U': c=s.charAt(0);
+                    if (c=='g') {
+                        c=s.charAt(9);
+                        if (c=='r') { X="getUTCHours";id=Id_getUTCHours; }
+                        else if (c=='t') { X="getUTCMonth";id=Id_getUTCMonth; }
+                    }
+                    else if (c=='s') {
+                        c=s.charAt(9);
+                        if (c=='r') { X="setUTCHours";id=Id_setUTCHours; }
+                        else if (c=='t') { X="setUTCMonth";id=Id_setUTCMonth; }
+                    }
+                    break L;
+                case 's': X="constructor";id=Id_constructor; break L;
+                } break L;
+            case 12: c=s.charAt(2);
+                if (c=='D') { X="toDateString";id=Id_toDateString; }
+                else if (c=='T') { X="toTimeString";id=Id_toTimeString; }
+                break L;
+            case 13: c=s.charAt(0);
+                if (c=='g') {
+                    c=s.charAt(6);
+                    if (c=='M') { X="getUTCMinutes";id=Id_getUTCMinutes; }
+                    else if (c=='S') { X="getUTCSeconds";id=Id_getUTCSeconds; }
+                }
+                else if (c=='s') {
+                    c=s.charAt(6);
+                    if (c=='M') { X="setUTCMinutes";id=Id_setUTCMinutes; }
+                    else if (c=='S') { X="setUTCSeconds";id=Id_setUTCSeconds; }
+                }
+                break L;
+            case 14: c=s.charAt(0);
+                if (c=='g') { X="getUTCFullYear";id=Id_getUTCFullYear; }
+                else if (c=='s') { X="setUTCFullYear";id=Id_setUTCFullYear; }
+                else if (c=='t') { X="toLocaleString";id=Id_toLocaleString; }
+                break L;
+            case 15: c=s.charAt(0);
+                if (c=='g') { X="getMilliseconds";id=Id_getMilliseconds; }
+                else if (c=='s') { X="setMilliseconds";id=Id_setMilliseconds; }
+                break L;
+            case 17: X="getTimezoneOffset";id=Id_getTimezoneOffset; break L;
+            case 18: c=s.charAt(0);
+                if (c=='g') { X="getUTCMilliseconds";id=Id_getUTCMilliseconds; }
+                else if (c=='s') { X="setUTCMilliseconds";id=Id_setUTCMilliseconds; }
+                else if (c=='t') {
+                    c=s.charAt(8);
+                    if (c=='D') { X="toLocaleDateString";id=Id_toLocaleDateString; }
+                    else if (c=='T') { X="toLocaleTimeString";id=Id_toLocaleTimeString; }
+                }
+                break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        ConstructorId_now       = -3,
+        ConstructorId_parse     = -2,
+        ConstructorId_UTC       = -1,
+
+        Id_constructor          =  1,
+        Id_toString             =  2,
+        Id_toTimeString         =  3,
+        Id_toDateString         =  4,
+        Id_toLocaleString       =  5,
+        Id_toLocaleTimeString   =  6,
+        Id_toLocaleDateString   =  7,
+        Id_toUTCString          =  8,
+        Id_toSource             =  9,
+        Id_valueOf              = 10,
+        Id_getTime              = 11,
+        Id_getYear              = 12,
+        Id_getFullYear          = 13,
+        Id_getUTCFullYear       = 14,
+        Id_getMonth             = 15,
+        Id_getUTCMonth          = 16,
+        Id_getDate              = 17,
+        Id_getUTCDate           = 18,
+        Id_getDay               = 19,
+        Id_getUTCDay            = 20,
+        Id_getHours             = 21,
+        Id_getUTCHours          = 22,
+        Id_getMinutes           = 23,
+        Id_getUTCMinutes        = 24,
+        Id_getSeconds           = 25,
+        Id_getUTCSeconds        = 26,
+        Id_getMilliseconds      = 27,
+        Id_getUTCMilliseconds   = 28,
+        Id_getTimezoneOffset    = 29,
+        Id_setTime              = 30,
+        Id_setMilliseconds      = 31,
+        Id_setUTCMilliseconds   = 32,
+        Id_setSeconds           = 33,
+        Id_setUTCSeconds        = 34,
+        Id_setMinutes           = 35,
+        Id_setUTCMinutes        = 36,
+        Id_setHours             = 37,
+        Id_setUTCHours          = 38,
+        Id_setDate              = 39,
+        Id_setUTCDate           = 40,
+        Id_setMonth             = 41,
+        Id_setUTCMonth          = 42,
+        Id_setFullYear          = 43,
+        Id_setUTCFullYear       = 44,
+        Id_setYear              = 45,
+
+        MAX_PROTOTYPE_ID        = 45;
+
+    private static final int
+        Id_toGMTString  =  Id_toUTCString; // Alias, see Ecma B.2.6
+// #/string_id_map#
+
+    /* cached values */
+    private static java.util.TimeZone thisTimeZone;
+    private static double LocalTZA;
+    private static java.text.DateFormat timeZoneFormatter;
+    private static java.text.DateFormat localeDateTimeFormatter;
+    private static java.text.DateFormat localeDateFormatter;
+    private static java.text.DateFormat localeTimeFormatter;
+
+    private double date;
+}
+
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeError.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeError.java
new file mode 100644
index 0000000..4aff10c
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeError.java
@@ -0,0 +1,227 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+package org.mozilla.javascript;
+
+/**
+ *
+ * The class of error objects
+ *
+ *  ECMA 15.11
+ */
+final class NativeError extends IdScriptableObject
+{
+    static final long serialVersionUID = -5338413581437645187L;
+
+    private static final Object ERROR_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeError obj = new NativeError();
+        ScriptableObject.putProperty(obj, "name", "Error");
+        ScriptableObject.putProperty(obj, "message", "");
+        ScriptableObject.putProperty(obj, "fileName", "");
+        ScriptableObject.putProperty(obj, "lineNumber", new Integer(0));
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    static NativeError make(Context cx, Scriptable scope,
+                            IdFunctionObject ctorObj, Object[] args)
+    {
+        Scriptable proto = (Scriptable)(ctorObj.get("prototype", ctorObj));
+
+        NativeError obj = new NativeError();
+        obj.setPrototype(proto);
+        obj.setParentScope(scope);
+
+        int arglen = args.length;
+        if (arglen >= 1) {
+            ScriptableObject.putProperty(obj, "message",
+                    ScriptRuntime.toString(args[0]));
+            if (arglen >= 2) {
+                ScriptableObject.putProperty(obj, "fileName", args[1]);
+                if (arglen >= 3) {
+                    int line = ScriptRuntime.toInt32(args[2]);
+                    ScriptableObject.putProperty(obj, "lineNumber",
+                            new Integer(line));
+                }
+            }
+        }
+        if(arglen < 3 && cx.hasFeature(Context.FEATURE_LOCATION_INFORMATION_IN_ERROR)) {
+            // Fill in fileName and lineNumber automatically when not specified
+            // explicitly, see Bugzilla issue #342807
+            int[] linep = new int[1];
+            String fileName = Context.getSourcePositionFromStack(linep);
+            ScriptableObject.putProperty(obj, "lineNumber", 
+                    new Integer(linep[0]));
+            if(arglen < 2) {
+                ScriptableObject.putProperty(obj, "fileName", fileName);
+            }
+        }
+        return obj;
+    }
+
+    public String getClassName()
+    {
+        return "Error";
+    }
+
+    public String toString()
+    {
+        return js_toString(this);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor: arity=1; s="constructor"; break;
+          case Id_toString:    arity=0; s="toString";    break;
+          case Id_toSource:    arity=0; s="toSource";    break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(ERROR_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(ERROR_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case Id_constructor:
+            return make(cx, scope, f, args);
+
+          case Id_toString:
+            return js_toString(thisObj);
+
+          case Id_toSource:
+            return js_toSource(cx, scope, thisObj);
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+    private static String js_toString(Scriptable thisObj)
+    {
+        return getString(thisObj, "name")+": "+getString(thisObj, "message");
+    }
+
+    private static String js_toSource(Context cx, Scriptable scope,
+                                      Scriptable thisObj)
+    {
+        // Emulation of SpiderMonkey behavior
+        Object name = ScriptableObject.getProperty(thisObj, "name");
+        Object message = ScriptableObject.getProperty(thisObj, "message");
+        Object fileName = ScriptableObject.getProperty(thisObj, "fileName");
+        Object lineNumber = ScriptableObject.getProperty(thisObj, "lineNumber");
+
+        StringBuffer sb = new StringBuffer();
+        sb.append("(new ");
+        if (name == NOT_FOUND) {
+            name = Undefined.instance;
+        }
+        sb.append(ScriptRuntime.toString(name));
+        sb.append("(");
+        if (message != NOT_FOUND
+            || fileName != NOT_FOUND
+            || lineNumber != NOT_FOUND)
+        {
+            if (message == NOT_FOUND) {
+                message = "";
+            }
+            sb.append(ScriptRuntime.uneval(cx, scope, message));
+            if (fileName != NOT_FOUND || lineNumber != NOT_FOUND) {
+                sb.append(", ");
+                if (fileName == NOT_FOUND) {
+                    fileName = "";
+                }
+                sb.append(ScriptRuntime.uneval(cx, scope, fileName));
+                if (lineNumber != NOT_FOUND) {
+                    int line = ScriptRuntime.toInt32(lineNumber);
+                    if (line != 0) {
+                        sb.append(", ");
+                        sb.append(ScriptRuntime.toString(line));
+                    }
+                }
+            }
+        }
+        sb.append("))");
+        return sb.toString();
+    }
+
+    private static String getString(Scriptable obj, String id)
+    {
+        Object value = ScriptableObject.getProperty(obj, id);
+        if (value == NOT_FOUND) return "";
+        return ScriptRuntime.toString(value);
+    }
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #string_id_map#
+// #generated# Last update: 2007-05-09 08:15:45 EDT
+        L0: { id = 0; String X = null; int c;
+            int s_length = s.length();
+            if (s_length==8) {
+                c=s.charAt(3);
+                if (c=='o') { X="toSource";id=Id_toSource; }
+                else if (c=='t') { X="toString";id=Id_toString; }
+            }
+            else if (s_length==11) { X="constructor";id=Id_constructor; }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor    = 1,
+        Id_toString       = 2,
+        Id_toSource       = 3,
+
+        MAX_PROTOTYPE_ID  = 3;
+
+// #/string_id_map#
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeFunction.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeFunction.java
new file mode 100644
index 0000000..ac70556
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeFunction.java
@@ -0,0 +1,169 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Roger Lawrence
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import org.mozilla.javascript.debug.DebuggableScript;
+
+/**
+ * This class implements the Function native object.
+ * See ECMA 15.3.
+ * @author Norris Boyd
+ */
+public abstract class NativeFunction extends BaseFunction
+{
+
+    public final void initScriptFunction(Context cx, Scriptable scope)
+    {
+        ScriptRuntime.setFunctionProtoAndParent(this, scope);
+    }
+
+    /**
+     * @param indent How much to indent the decompiled result
+     *
+     * @param flags Flags specifying format of decompilation output
+     */
+    final String decompile(int indent, int flags)
+    {
+        String encodedSource = getEncodedSource();
+        if (encodedSource == null) {
+            return super.decompile(indent, flags);
+        } else {
+            UintMap properties = new UintMap(1);
+            properties.put(Decompiler.INITIAL_INDENT_PROP, indent);
+            return Decompiler.decompile(encodedSource, flags, properties);
+        }
+    }
+
+    public int getLength()
+    {
+        int paramCount = getParamCount();
+        if (getLanguageVersion() != Context.VERSION_1_2) {
+            return paramCount;
+        }
+        Context cx = Context.getContext();
+        NativeCall activation = ScriptRuntime.findFunctionActivation(cx, this);
+        if (activation == null) {
+            return paramCount;
+        }
+        return activation.originalArgs.length;
+    }
+
+    public int getArity()
+    {
+        return getParamCount();
+    }
+
+    /**
+     * @deprecated Use {@link BaseFunction#getFunctionName()} instead.
+     * For backwards compatibility keep an old method name used by
+     * Batik and possibly others.
+     */
+    public String jsGet_name()
+    {
+        return getFunctionName();
+    }
+
+    /**
+     * Get encoded source string.
+     */
+    public String getEncodedSource()
+    {
+        return null;
+    }
+
+    public DebuggableScript getDebuggableView()
+    {
+        return null;
+    }
+
+    /**
+     * Resume execution of a suspended generator.
+     * @param cx The current context
+     * @param scope Scope for the parent generator function
+     * @param operation The resumption operation (next, send, etc.. )
+     * @param state The generator state (has locals, stack, etc.)
+     * @param value The return value of yield (if required).
+     * @return The next yielded value (if any)
+     */
+    public Object resumeGenerator(Context cx, Scriptable scope,
+                                  int operation, Object state, Object value)
+    {
+        throw new EvaluatorException("resumeGenerator() not implemented");
+    }
+
+
+    protected abstract int getLanguageVersion();
+
+    /**
+     * Get number of declared parameters. It should be 0 for scripts.
+     */
+    protected abstract int getParamCount();
+
+    /**
+     * Get number of declared parameters and variables defined through var
+     * statements.
+     */
+    protected abstract int getParamAndVarCount();
+
+    /**
+     * Get parameter or variable name.
+     * If <tt>index < {@link #getParamCount()}</tt>, then return the name of the
+     * corresponding parameter. Otherwise return the name of variable.
+     */
+    protected abstract String getParamOrVarName(int index);
+
+    /**
+     * Get parameter or variable const-ness.
+     * If <tt>index < {@link #getParamCount()}</tt>, then return the const-ness
+     * of the corresponding parameter. Otherwise return whether the variable is
+     * const.
+     */
+    protected boolean getParamOrVarConst(int index)
+    {
+        // By default return false to preserve compatibility with existing 
+        // classes subclassing this class, which are mostly generated by jsc 
+        // from earlier Rhino versions. See Bugzilla #396117.
+        return false;
+    }
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGenerator.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGenerator.java
new file mode 100644
index 0000000..0a8da9f
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGenerator.java
@@ -0,0 +1,281 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements generator objects. See
+ * http://developer.mozilla.org/en/docs/New_in_JavaScript_1.7#Generators
+ *
+ * @author Norris Boyd
+ */
+public final class NativeGenerator extends IdScriptableObject {
+    private static final Object GENERATOR_TAG = new Object();
+
+    static NativeGenerator init(ScriptableObject scope, boolean sealed) {
+        // Generator
+        // Can't use "NativeGenerator().exportAsJSClass" since we don't want
+        // to define "Generator" as a constructor in the top-level scope.
+
+        NativeGenerator prototype = new NativeGenerator();
+        if (scope != null) {
+            prototype.setParentScope(scope);
+            prototype.setPrototype(getObjectPrototype(scope));
+        }
+        prototype.activatePrototypeMap(MAX_PROTOTYPE_ID);
+        if (sealed) {
+            prototype.sealObject();
+        }
+
+        // Need to access Generator prototype when constructing
+        // Generator instances, but don't have a generator constructor
+        // to use to find the prototype. Use the "associateValue"
+        // approach instead.
+        if (scope != null) {
+            scope.associateValue(GENERATOR_TAG, prototype);
+        }
+
+        return prototype;
+    }
+
+    /**
+     * Only for constructing the prototype object.
+     */
+    private NativeGenerator() { }
+
+    public NativeGenerator(Scriptable scope, NativeFunction function,
+                           Object savedState)
+    {
+        this.function = function;
+        this.savedState = savedState;
+        // Set parent and prototype properties. Since we don't have a
+        // "Generator" constructor in the top scope, we stash the
+        // prototype in the top scope's associated value.
+        Scriptable top = ScriptableObject.getTopLevelScope(scope);
+        this.setParentScope(top);
+        NativeGenerator prototype = (NativeGenerator)
+            ScriptableObject.getTopScopeValue(top, GENERATOR_TAG);
+        this.setPrototype(prototype);
+    }
+
+    public static final int GENERATOR_SEND  = 0,
+                            GENERATOR_THROW = 1,
+                            GENERATOR_CLOSE = 2;
+
+    public String getClassName() {
+        return "Generator";
+    }
+
+    /**
+     * Close the generator if it is still open.
+     */
+    public void finalize() throws Throwable {
+        if (savedState != null) {
+            // This is a little tricky since we are most likely running in
+            // a different thread. We need to get a Context to run this, and
+            // we must call "doTopCall" since this will likely be the outermost
+            // JavaScript frame on this thread.
+            Context cx = Context.getCurrentContext();
+            ContextFactory factory = cx != null ? cx.getFactory()
+                                                : ContextFactory.getGlobal();
+            Scriptable scope = ScriptableObject.getTopLevelScope(this);
+            factory.call(new CloseGeneratorAction(this));
+        }
+    }
+
+    private static class CloseGeneratorAction implements ContextAction {
+        private NativeGenerator generator;
+
+        CloseGeneratorAction(NativeGenerator generator) {
+            this.generator = generator;
+        }
+
+        public Object run(Context cx) {
+            Scriptable scope = ScriptableObject.getTopLevelScope(generator);
+            Callable closeGenerator = new Callable() {
+                public Object call(Context cx, Scriptable scope,
+                                   Scriptable thisObj, Object[] args) {
+                     return ((NativeGenerator)thisObj).resume(cx, scope,
+                             GENERATOR_CLOSE, new GeneratorClosedException());
+                }
+            };
+            return ScriptRuntime.doTopCall(closeGenerator, cx, scope,
+                                           generator, null);
+        }
+    }
+
+    protected void initPrototypeId(int id) {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_close:          arity=1; s="close";          break;
+          case Id_next:           arity=1; s="next";           break;
+          case Id_send:           arity=0; s="send";           break;
+          case Id_throw:          arity=0; s="throw";          break;
+          case Id___iterator__:   arity=1; s="__iterator__";   break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(GENERATOR_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(GENERATOR_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+
+        if (!(thisObj instanceof NativeGenerator))
+            throw incompatibleCallError(f);
+
+        NativeGenerator generator = (NativeGenerator) thisObj;
+
+        switch (id) {
+
+          case Id_close:
+            // need to run any pending finally clauses
+            return generator.resume(cx, scope, GENERATOR_CLOSE,
+                                    new GeneratorClosedException());
+
+          case Id_next:
+            // arguments to next() are ignored
+            generator.firstTime = false;
+            return generator.resume(cx, scope, GENERATOR_SEND,
+                                    Undefined.instance);
+
+          case Id_send: {
+            Object arg = args.length > 0 ? args[0] : Undefined.instance;
+            if (generator.firstTime && !arg.equals(Undefined.instance)) {
+                throw ScriptRuntime.typeError0("msg.send.newborn");
+            }
+            return generator.resume(cx, scope, GENERATOR_SEND, arg);
+          }
+
+          case Id_throw:
+            return generator.resume(cx, scope, GENERATOR_THROW,
+                args.length > 0 ? args[0] : Undefined.instance);
+
+          case Id___iterator__:
+            return thisObj;
+
+          default:
+            throw new IllegalArgumentException(String.valueOf(id));
+        }
+    }
+
+    private Object resume(Context cx, Scriptable scope, int operation,
+                          Object value)
+    {
+        if (savedState == null) {
+            if (operation == GENERATOR_CLOSE)
+                return Undefined.instance;
+            Object thrown;
+            if (operation == GENERATOR_THROW) {
+                thrown = value;
+            } else {
+                thrown = NativeIterator.getStopIterationObject(scope);
+            }
+            throw new JavaScriptException(thrown, lineSource, lineNumber);
+        }
+        try {
+            synchronized (this) {
+              // generator execution is necessarily single-threaded and
+              // non-reentrant.
+              // See https://bugzilla.mozilla.org/show_bug.cgi?id=349263
+              if (locked)
+                  throw ScriptRuntime.typeError0("msg.already.exec.gen");
+              locked = true;
+            }
+            return function.resumeGenerator(cx, scope, operation, savedState,
+                                            value);
+        } catch (GeneratorClosedException e) {
+            // On closing a generator in the compile path, the generator
+            // throws a special exception. This ensures execution of all pending
+            // finalizers and will not get caught by user code.
+            return Undefined.instance;
+        } catch (RhinoException e) {
+            lineNumber = e.lineNumber();
+            lineSource = e.lineSource();
+            savedState = null;
+            throw e;
+        } finally {
+            synchronized (this) {
+              locked = false;
+            }
+            if (operation == GENERATOR_CLOSE)
+                savedState = null;
+        }
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s) {
+        int id;
+// #generated# Last update: 2007-06-14 13:13:03 EDT
+        L0: { id = 0; String X = null; int c;
+            int s_length = s.length();
+            if (s_length==4) {
+                c=s.charAt(0);
+                if (c=='n') { X="next";id=Id_next; }
+                else if (c=='s') { X="send";id=Id_send; }
+            }
+            else if (s_length==5) {
+                c=s.charAt(0);
+                if (c=='c') { X="close";id=Id_close; }
+                else if (c=='t') { X="throw";id=Id_throw; }
+            }
+            else if (s_length==12) { X="__iterator__";id=Id___iterator__; }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_close                 = 1,
+        Id_next                  = 2,
+        Id_send                  = 3,
+        Id_throw                 = 4,
+        Id___iterator__          = 5,
+        MAX_PROTOTYPE_ID         = 5;
+
+// #/string_id_map#
+    private NativeFunction function;
+    private Object savedState;
+    private String lineSource;
+    private int lineNumber;
+    private boolean firstTime = true;
+    private boolean locked;
+
+    public static class GeneratorClosedException extends RuntimeException {
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java
new file mode 100644
index 0000000..58faad4
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeGlobal.java
@@ -0,0 +1,790 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+
+import org.mozilla.javascript.xml.XMLLib;
+
+/**
+ * This class implements the global native object (function and value
+ * properties only).
+ *
+ * See ECMA 15.1.[12].
+ *
+ * @author Mike Shaver
+ */
+
+public class NativeGlobal implements Serializable, IdFunctionCall
+{
+    static final long serialVersionUID = 6080442165748707530L;
+
+    public static void init(Context cx, Scriptable scope, boolean sealed) {
+        NativeGlobal obj = new NativeGlobal();
+
+        for (int id = 1; id <= LAST_SCOPE_FUNCTION_ID; ++id) {
+            String name;
+            int arity = 1;
+            switch (id) {
+              case Id_decodeURI:
+                name = "decodeURI";
+                break;
+              case Id_decodeURIComponent:
+                name = "decodeURIComponent";
+                break;
+              case Id_encodeURI:
+                name = "encodeURI";
+                break;
+              case Id_encodeURIComponent:
+                name = "encodeURIComponent";
+                break;
+              case Id_escape:
+                name = "escape";
+                break;
+              case Id_eval:
+                name = "eval";
+                break;
+              case Id_isFinite:
+                name = "isFinite";
+                break;
+              case Id_isNaN:
+                name = "isNaN";
+                break;
+              case Id_isXMLName:
+                name = "isXMLName";
+                break;
+              case Id_parseFloat:
+                name = "parseFloat";
+                break;
+              case Id_parseInt:
+                name = "parseInt";
+                arity = 2;
+                break;
+              case Id_unescape:
+                name = "unescape";
+                break;
+              case Id_uneval:
+                name = "uneval";
+                break;
+              default:
+                  throw Kit.codeBug();
+            }
+            IdFunctionObject f = new IdFunctionObject(obj, FTAG, id, name,
+                                                      arity, scope);
+            if (sealed) {
+                f.sealObject();
+            }
+            f.exportAsScopeProperty();
+        }
+
+        ScriptableObject.defineProperty(
+            scope, "NaN", ScriptRuntime.NaNobj,
+            ScriptableObject.DONTENUM);
+        ScriptableObject.defineProperty(
+            scope, "Infinity",
+            ScriptRuntime.wrapNumber(Double.POSITIVE_INFINITY),
+            ScriptableObject.DONTENUM);
+        ScriptableObject.defineProperty(
+            scope, "undefined", Undefined.instance,
+            ScriptableObject.DONTENUM);
+
+        String[] errorMethods = Kit.semicolonSplit(""
+                                    +"ConversionError;"
+                                    +"EvalError;"
+                                    +"RangeError;"
+                                    +"ReferenceError;"
+                                    +"SyntaxError;"
+                                    +"TypeError;"
+                                    +"URIError;"
+                                    +"InternalError;"
+                                    +"JavaException;"
+                                    );
+
+        /*
+            Each error constructor gets its own Error object as a prototype,
+            with the 'name' property set to the name of the error.
+        */
+        for (int i = 0; i < errorMethods.length; i++) {
+            String name = errorMethods[i];
+            Scriptable errorProto = ScriptRuntime.
+                                        newObject(cx, scope, "Error",
+                                                  ScriptRuntime.emptyArgs);
+            errorProto.put("name", errorProto, name);
+            if (sealed) {
+                if (errorProto instanceof ScriptableObject) {
+                    ((ScriptableObject)errorProto).sealObject();
+                }
+            }
+            IdFunctionObject ctor = new IdFunctionObject(obj, FTAG,
+                                                         Id_new_CommonError,
+                                                         name, 1, scope);
+            ctor.markAsConstructor(errorProto);
+            if (sealed) {
+                ctor.sealObject();
+            }
+            ctor.exportAsScopeProperty();
+        }
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (f.hasTag(FTAG)) {
+            int methodId = f.methodId();
+            switch (methodId) {
+                case Id_decodeURI:
+                case Id_decodeURIComponent: {
+                    String str = ScriptRuntime.toString(args, 0);
+                    return decode(str, methodId == Id_decodeURI);
+                }
+
+                case Id_encodeURI:
+                case Id_encodeURIComponent: {
+                    String str = ScriptRuntime.toString(args, 0);
+                    return encode(str, methodId == Id_encodeURI);
+                }
+
+                case Id_escape:
+                    return js_escape(args);
+
+                case Id_eval:
+                    return js_eval(cx, scope, args);
+
+                case Id_isFinite: {
+                    boolean result;
+                    if (args.length < 1) {
+                        result = false;
+                    } else {
+                        double d = ScriptRuntime.toNumber(args[0]);
+                        result = (d == d
+                                  && d != Double.POSITIVE_INFINITY
+                                  && d != Double.NEGATIVE_INFINITY);
+                    }
+                    return ScriptRuntime.wrapBoolean(result);
+                }
+
+                case Id_isNaN: {
+                    // The global method isNaN, as per ECMA-262 15.1.2.6.
+                    boolean result;
+                    if (args.length < 1) {
+                        result = true;
+                    } else {
+                        double d = ScriptRuntime.toNumber(args[0]);
+                        result = (d != d);
+                    }
+                    return ScriptRuntime.wrapBoolean(result);
+                }
+
+                case Id_isXMLName: {
+                    Object name = (args.length == 0)
+                                  ? Undefined.instance : args[0];
+                    XMLLib xmlLib = XMLLib.extractFromScope(scope);
+                    return ScriptRuntime.wrapBoolean(
+                        xmlLib.isXMLName(cx, name));
+                }
+
+                case Id_parseFloat:
+                    return js_parseFloat(args);
+
+                case Id_parseInt:
+                    return js_parseInt(args);
+
+                case Id_unescape:
+                    return js_unescape(args);
+
+                case Id_uneval: {
+                    Object value = (args.length != 0)
+                                   ? args[0] : Undefined.instance;
+                    return ScriptRuntime.uneval(cx, scope, value);
+                }
+
+                case Id_new_CommonError:
+                    // The implementation of all the ECMA error constructors
+                    // (SyntaxError, TypeError, etc.)
+                    return NativeError.make(cx, scope, f, args);
+            }
+        }
+        throw f.unknown();
+    }
+
+    /**
+     * The global method parseInt, as per ECMA-262 15.1.2.2.
+     */
+    private Object js_parseInt(Object[] args) {
+        String s = ScriptRuntime.toString(args, 0);
+        int radix = ScriptRuntime.toInt32(args, 1);
+
+        int len = s.length();
+        if (len == 0)
+            return ScriptRuntime.NaNobj;
+
+        boolean negative = false;
+        int start = 0;
+        char c;
+        do {
+            c = s.charAt(start);
+            if (!Character.isWhitespace(c))
+                break;
+            start++;
+        } while (start < len);
+
+        if (c == '+' || (negative = (c == '-')))
+            start++;
+
+        final int NO_RADIX = -1;
+        if (radix == 0) {
+            radix = NO_RADIX;
+        } else if (radix < 2 || radix > 36) {
+            return ScriptRuntime.NaNobj;
+        } else if (radix == 16 && len - start > 1 && s.charAt(start) == '0') {
+            c = s.charAt(start+1);
+            if (c == 'x' || c == 'X')
+                start += 2;
+        }
+
+        if (radix == NO_RADIX) {
+            radix = 10;
+            if (len - start > 1 && s.charAt(start) == '0') {
+                c = s.charAt(start+1);
+                if (c == 'x' || c == 'X') {
+                    radix = 16;
+                    start += 2;
+                } else if ('0' <= c && c <= '9') {
+                    radix = 8;
+                    start++;
+                }
+            }
+        }
+
+        double d = ScriptRuntime.stringToNumber(s, start, radix);
+        return ScriptRuntime.wrapNumber(negative ? -d : d);
+    }
+
+    /**
+     * The global method parseFloat, as per ECMA-262 15.1.2.3.
+     *
+     * @param args the arguments to parseFloat, ignoring args[>=1]
+     */
+    private Object js_parseFloat(Object[] args)
+    {
+        if (args.length < 1)
+            return ScriptRuntime.NaNobj;
+
+        String s = ScriptRuntime.toString(args[0]);
+        int len = s.length();
+        int start = 0;
+        // Scan forward to skip whitespace
+        char c;
+        for (;;) {
+            if (start == len) {
+                return ScriptRuntime.NaNobj;
+            }
+            c = s.charAt(start);
+            if (!TokenStream.isJSSpace(c)) {
+                break;
+            }
+            ++start;
+        }
+
+        int i = start;
+        if (c == '+' || c == '-') {
+            ++i;
+            if (i == len) {
+                return ScriptRuntime.NaNobj;
+            }
+            c = s.charAt(i);
+        }
+
+        if (c == 'I') {
+            // check for "Infinity"
+            if (i+8 <= len && s.regionMatches(i, "Infinity", 0, 8)) {
+                double d;
+                if (s.charAt(start) == '-') {
+                    d = Double.NEGATIVE_INFINITY;
+                } else {
+                    d = Double.POSITIVE_INFINITY;
+                }
+                return ScriptRuntime.wrapNumber(d);
+            }
+            return ScriptRuntime.NaNobj;
+        }
+
+        // Find the end of the legal bit
+        int decimal = -1;
+        int exponent = -1;
+        for (; i < len; i++) {
+            switch (s.charAt(i)) {
+              case '.':
+                if (decimal != -1) // Only allow a single decimal point.
+                    break;
+                decimal = i;
+                continue;
+
+              case 'e':
+              case 'E':
+                if (exponent != -1)
+                    break;
+                exponent = i;
+                continue;
+
+              case '+':
+              case '-':
+                 // Only allow '+' or '-' after 'e' or 'E'
+                if (exponent != i-1)
+                    break;
+                continue;
+
+              case '0': case '1': case '2': case '3': case '4':
+              case '5': case '6': case '7': case '8': case '9':
+                continue;
+
+              default:
+                break;
+            }
+            break;
+        }
+        s = s.substring(start, i);
+        try {
+            return Double.valueOf(s);
+        }
+        catch (NumberFormatException ex) {
+            return ScriptRuntime.NaNobj;
+        }
+    }
+
+    /**
+     * The global method escape, as per ECMA-262 15.1.2.4.
+
+     * Includes code for the 'mask' argument supported by the C escape
+     * method, which used to be part of the browser imbedding.  Blame
+     * for the strange constant names should be directed there.
+     */
+
+    private Object js_escape(Object[] args) {
+        final int
+            URL_XALPHAS = 1,
+            URL_XPALPHAS = 2,
+            URL_PATH = 4;
+
+        String s = ScriptRuntime.toString(args, 0);
+
+        int mask = URL_XALPHAS | URL_XPALPHAS | URL_PATH;
+        if (args.length > 1) { // the 'mask' argument.  Non-ECMA.
+            double d = ScriptRuntime.toNumber(args[1]);
+            if (d != d || ((mask = (int) d) != d) ||
+                0 != (mask & ~(URL_XALPHAS | URL_XPALPHAS | URL_PATH)))
+            {
+                throw Context.reportRuntimeError0("msg.bad.esc.mask");
+            }
+        }
+
+        StringBuffer sb = null;
+        for (int k = 0, L = s.length(); k != L; ++k) {
+            int c = s.charAt(k);
+            if (mask != 0
+                && ((c >= '0' && c <= '9')
+                    || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')
+                    || c == '@' || c == '*' || c == '_' || c == '-' || c == '.'
+                    || (0 != (mask & URL_PATH) && (c == '/' || c == '+'))))
+            {
+                if (sb != null) {
+                    sb.append((char)c);
+                }
+            } else {
+                if (sb == null) {
+                    sb = new StringBuffer(L + 3);
+                    sb.append(s);
+                    sb.setLength(k);
+                }
+
+                int hexSize;
+                if (c < 256) {
+                    if (c == ' ' && mask == URL_XPALPHAS) {
+                        sb.append('+');
+                        continue;
+                    }
+                    sb.append('%');
+                    hexSize = 2;
+                } else {
+                    sb.append('%');
+                    sb.append('u');
+                    hexSize = 4;
+                }
+
+                // append hexadecimal form of c left-padded with 0
+                for (int shift = (hexSize - 1) * 4; shift >= 0; shift -= 4) {
+                    int digit = 0xf & (c >> shift);
+                    int hc = (digit < 10) ? '0' + digit : 'A' - 10 + digit;
+                    sb.append((char)hc);
+                }
+            }
+        }
+
+        return (sb == null) ? s : sb.toString();
+    }
+
+    /**
+     * The global unescape method, as per ECMA-262 15.1.2.5.
+     */
+
+    private Object js_unescape(Object[] args)
+    {
+        String s = ScriptRuntime.toString(args, 0);
+        int firstEscapePos = s.indexOf('%');
+        if (firstEscapePos >= 0) {
+            int L = s.length();
+            char[] buf = s.toCharArray();
+            int destination = firstEscapePos;
+            for (int k = firstEscapePos; k != L;) {
+                char c = buf[k];
+                ++k;
+                if (c == '%' && k != L) {
+                    int end, start;
+                    if (buf[k] == 'u') {
+                        start = k + 1;
+                        end = k + 5;
+                    } else {
+                        start = k;
+                        end = k + 2;
+                    }
+                    if (end <= L) {
+                        int x = 0;
+                        for (int i = start; i != end; ++i) {
+                            x = Kit.xDigitToInt(buf[i], x);
+                        }
+                        if (x >= 0) {
+                            c = (char)x;
+                            k = end;
+                        }
+                    }
+                }
+                buf[destination] = c;
+                ++destination;
+            }
+            s = new String(buf, 0, destination);
+        }
+        return s;
+    }
+
+    private Object js_eval(Context cx, Scriptable scope, Object[] args)
+    {
+        String m = ScriptRuntime.getMessage1("msg.cant.call.indirect", "eval");
+        throw NativeGlobal.constructError(cx, "EvalError", m, scope);
+    }
+
+    static boolean isEvalFunction(Object functionObj)
+    {
+        if (functionObj instanceof IdFunctionObject) {
+            IdFunctionObject function = (IdFunctionObject)functionObj;
+            if (function.hasTag(FTAG) && function.methodId() == Id_eval) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * @deprecated Use {@link ScriptRuntime#constructError(String,String)}
+     * instead.
+     */
+    public static EcmaError constructError(Context cx,
+                                           String error,
+                                           String message,
+                                           Scriptable scope)
+    {
+        return ScriptRuntime.constructError(error, message);
+    }
+
+    /**
+     * @deprecated Use
+     * {@link ScriptRuntime#constructError(String,String,String,int,String,int)}
+     * instead.
+     */
+    public static EcmaError constructError(Context cx,
+                                           String error,
+                                           String message,
+                                           Scriptable scope,
+                                           String sourceName,
+                                           int lineNumber,
+                                           int columnNumber,
+                                           String lineSource)
+    {
+        return ScriptRuntime.constructError(error, message,
+                                            sourceName, lineNumber,
+                                            lineSource, columnNumber);
+    }
+
+    /*
+    *   ECMA 3, 15.1.3 URI Handling Function Properties
+    *
+    *   The following are implementations of the algorithms
+    *   given in the ECMA specification for the hidden functions
+    *   'Encode' and 'Decode'.
+    */
+    private static String encode(String str, boolean fullUri) {
+        byte[] utf8buf = null;
+        StringBuffer sb = null;
+
+        for (int k = 0, length = str.length(); k != length; ++k) {
+            char C = str.charAt(k);
+            if (encodeUnescaped(C, fullUri)) {
+                if (sb != null) {
+                    sb.append(C);
+                }
+            } else {
+                if (sb == null) {
+                    sb = new StringBuffer(length + 3);
+                    sb.append(str);
+                    sb.setLength(k);
+                    utf8buf = new byte[6];
+                }
+                if (0xDC00 <= C && C <= 0xDFFF) {
+                    throw Context.reportRuntimeError0("msg.bad.uri");
+                }
+                int V;
+                if (C < 0xD800 || 0xDBFF < C) {
+                    V = C;
+                } else {
+                    k++;
+                    if (k == length) {
+                        throw Context.reportRuntimeError0("msg.bad.uri");
+                    }
+                    char C2 = str.charAt(k);
+                    if (!(0xDC00 <= C2 && C2 <= 0xDFFF)) {
+                        throw Context.reportRuntimeError0("msg.bad.uri");
+                    }
+                    V = ((C - 0xD800) << 10) + (C2 - 0xDC00) + 0x10000;
+                }
+                int L = oneUcs4ToUtf8Char(utf8buf, V);
+                for (int j = 0; j < L; j++) {
+                    int d = 0xff & utf8buf[j];
+                    sb.append('%');
+                    sb.append(toHexChar(d >>> 4));
+                    sb.append(toHexChar(d & 0xf));
+                }
+            }
+        }
+        return (sb == null) ? str : sb.toString();
+    }
+
+    private static char toHexChar(int i) {
+        if (i >> 4 != 0) Kit.codeBug();
+        return (char)((i < 10) ? i + '0' : i - 10 + 'a');
+    }
+
+    private static int unHex(char c) {
+        if ('A' <= c && c <= 'F') {
+            return c - 'A' + 10;
+        } else if ('a' <= c && c <= 'f') {
+            return c - 'a' + 10;
+        } else if ('0' <= c && c <= '9') {
+            return c - '0';
+        } else {
+            return -1;
+        }
+    }
+
+    private static int unHex(char c1, char c2) {
+        int i1 = unHex(c1);
+        int i2 = unHex(c2);
+        if (i1 >= 0 && i2 >= 0) {
+            return (i1 << 4) | i2;
+        }
+        return -1;
+    }
+
+    private static String decode(String str, boolean fullUri) {
+        char[] buf = null;
+        int bufTop = 0;
+
+        for (int k = 0, length = str.length(); k != length;) {
+            char C = str.charAt(k);
+            if (C != '%') {
+                if (buf != null) {
+                    buf[bufTop++] = C;
+                }
+                ++k;
+            } else {
+                if (buf == null) {
+                    // decode always compress so result can not be bigger then
+                    // str.length()
+                    buf = new char[length];
+                    str.getChars(0, k, buf, 0);
+                    bufTop = k;
+                }
+                int start = k;
+                if (k + 3 > length)
+                    throw Context.reportRuntimeError0("msg.bad.uri");
+                int B = unHex(str.charAt(k + 1), str.charAt(k + 2));
+                if (B < 0) throw Context.reportRuntimeError0("msg.bad.uri");
+                k += 3;
+                if ((B & 0x80) == 0) {
+                    C = (char)B;
+                } else {
+                    // Decode UTF-8 sequence into ucs4Char and encode it into
+                    // UTF-16
+                    int utf8Tail, ucs4Char, minUcs4Char;
+                    if ((B & 0xC0) == 0x80) {
+                        // First  UTF-8 should be ouside 0x80..0xBF
+                        throw Context.reportRuntimeError0("msg.bad.uri");
+                    } else if ((B & 0x20) == 0) {
+                        utf8Tail = 1; ucs4Char = B & 0x1F;
+                        minUcs4Char = 0x80;
+                    } else if ((B & 0x10) == 0) {
+                        utf8Tail = 2; ucs4Char = B & 0x0F;
+                        minUcs4Char = 0x800;
+                    } else if ((B & 0x08) == 0) {
+                        utf8Tail = 3; ucs4Char = B & 0x07;
+                        minUcs4Char = 0x10000;
+                    } else if ((B & 0x04) == 0) {
+                        utf8Tail = 4; ucs4Char = B & 0x03;
+                        minUcs4Char = 0x200000;
+                    } else if ((B & 0x02) == 0) {
+                        utf8Tail = 5; ucs4Char = B & 0x01;
+                        minUcs4Char = 0x4000000;
+                    } else {
+                        // First UTF-8 can not be 0xFF or 0xFE
+                        throw Context.reportRuntimeError0("msg.bad.uri");
+                    }
+                    if (k + 3 * utf8Tail > length)
+                        throw Context.reportRuntimeError0("msg.bad.uri");
+                    for (int j = 0; j != utf8Tail; j++) {
+                        if (str.charAt(k) != '%')
+                            throw Context.reportRuntimeError0("msg.bad.uri");
+                        B = unHex(str.charAt(k + 1), str.charAt(k + 2));
+                        if (B < 0 || (B & 0xC0) != 0x80)
+                            throw Context.reportRuntimeError0("msg.bad.uri");
+                        ucs4Char = (ucs4Char << 6) | (B & 0x3F);
+                        k += 3;
+                    }
+                    // Check for overlongs and other should-not-present codes
+                    if (ucs4Char < minUcs4Char
+                        || ucs4Char == 0xFFFE || ucs4Char == 0xFFFF)
+                    {
+                        ucs4Char = 0xFFFD;
+                    }
+                    if (ucs4Char >= 0x10000) {
+                        ucs4Char -= 0x10000;
+                        if (ucs4Char > 0xFFFFF)
+                            throw Context.reportRuntimeError0("msg.bad.uri");
+                        char H = (char)((ucs4Char >>> 10) + 0xD800);
+                        C = (char)((ucs4Char & 0x3FF) + 0xDC00);
+                        buf[bufTop++] = H;
+                    } else {
+                        C = (char)ucs4Char;
+                    }
+                }
+                if (fullUri && URI_DECODE_RESERVED.indexOf(C) >= 0) {
+                    for (int x = start; x != k; x++) {
+                        buf[bufTop++] = str.charAt(x);
+                    }
+                } else {
+                    buf[bufTop++] = C;
+                }
+            }
+        }
+        return (buf == null) ? str : new String(buf, 0, bufTop);
+    }
+
+    private static boolean encodeUnescaped(char c, boolean fullUri) {
+        if (('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z')
+            || ('0' <= c && c <= '9'))
+        {
+            return true;
+        }
+        if ("-_.!~*'()".indexOf(c) >= 0)
+            return true;
+        if (fullUri) {
+            return URI_DECODE_RESERVED.indexOf(c) >= 0;
+        }
+        return false;
+    }
+
+    private static final String URI_DECODE_RESERVED = ";/?:@&=+$,#";
+
+    /* Convert one UCS-4 char and write it into a UTF-8 buffer, which must be
+    * at least 6 bytes long.  Return the number of UTF-8 bytes of data written.
+    */
+    private static int oneUcs4ToUtf8Char(byte[] utf8Buffer, int ucs4Char) {
+        int utf8Length = 1;
+
+        //JS_ASSERT(ucs4Char <= 0x7FFFFFFF);
+        if ((ucs4Char & ~0x7F) == 0)
+            utf8Buffer[0] = (byte)ucs4Char;
+        else {
+            int i;
+            int a = ucs4Char >>> 11;
+            utf8Length = 2;
+            while (a != 0) {
+                a >>>= 5;
+                utf8Length++;
+            }
+            i = utf8Length;
+            while (--i > 0) {
+                utf8Buffer[i] = (byte)((ucs4Char & 0x3F) | 0x80);
+                ucs4Char >>>= 6;
+            }
+            utf8Buffer[0] = (byte)(0x100 - (1 << (8-utf8Length)) + ucs4Char);
+        }
+        return utf8Length;
+    }
+
+    private static final Object FTAG = new Object();
+
+    private static final int
+        Id_decodeURI           =  1,
+        Id_decodeURIComponent  =  2,
+        Id_encodeURI           =  3,
+        Id_encodeURIComponent  =  4,
+        Id_escape              =  5,
+        Id_eval                =  6,
+        Id_isFinite            =  7,
+        Id_isNaN               =  8,
+        Id_isXMLName           =  9,
+        Id_parseFloat          = 10,
+        Id_parseInt            = 11,
+        Id_unescape            = 12,
+        Id_uneval              = 13,
+
+        LAST_SCOPE_FUNCTION_ID = 13,
+
+        Id_new_CommonError     = 14;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeIterator.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeIterator.java
new file mode 100644
index 0000000..c61f417
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeIterator.java
@@ -0,0 +1,260 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.Iterator;
+
+/**
+ * This class implements iterator objects. See 
+ * http://developer.mozilla.org/en/docs/New_in_JavaScript_1.7#Iterators
+ *
+ * @author Norris Boyd
+ */
+public final class NativeIterator extends IdScriptableObject {
+    private static final Object ITERATOR_TAG = new Object();
+    
+    static void init(ScriptableObject scope, boolean sealed) {
+        // Iterator
+        NativeIterator iterator = new NativeIterator();
+        iterator.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+
+        // Generator
+        NativeGenerator.init(scope, sealed);
+
+        // StopIteration
+        NativeObject obj = new StopIteration();
+        obj.setPrototype(getObjectPrototype(scope));
+        obj.setParentScope(scope);
+        if (sealed) { obj.sealObject(); }
+        ScriptableObject.defineProperty(scope, STOP_ITERATION, obj,
+                                        ScriptableObject.DONTENUM);
+        // Use "associateValue" so that generators can continue to
+        // throw StopIteration even if the property of the global
+        // scope is replaced or deleted.
+        scope.associateValue(ITERATOR_TAG, obj);
+    }
+    
+    /**
+     * Only for constructing the prototype object.
+     */
+    private NativeIterator() {
+    }
+    
+    private NativeIterator(Object objectIterator) {
+      this.objectIterator = objectIterator;
+    }
+
+    /**
+     * Get the value of the "StopIteration" object. Note that this value
+     * is stored in the top-level scope using "associateValue" so the
+     * value can still be found even if a script overwrites or deletes
+     * the global "StopIteration" property.
+     * @param scope a scope whose parent chain reaches a top-level scope
+     * @return the StopIteration object
+     */
+    public static Object getStopIterationObject(Scriptable scope) {
+        Scriptable top = ScriptableObject.getTopLevelScope(scope);
+        return ScriptableObject.getTopScopeValue(top, ITERATOR_TAG);
+    }
+    
+    private static final String STOP_ITERATION = "StopIteration";
+    public static final String ITERATOR_PROPERTY_NAME = "__iterator__";
+    
+    static class StopIteration extends NativeObject {
+        public String getClassName() {
+            return STOP_ITERATION;
+        }
+
+        /* StopIteration has custom instanceof behavior since it
+         * doesn't have a constructor.
+         */
+        public boolean hasInstance(Scriptable instance) {
+            return instance instanceof StopIteration;
+        }
+    }
+
+    public String getClassName() {
+        return "Iterator";
+    }
+
+    protected void initPrototypeId(int id) {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor:    arity=2; s="constructor";          break;
+          case Id_next:           arity=0; s="next";                 break;
+          case Id___iterator__:   arity=1; s=ITERATOR_PROPERTY_NAME; break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(ITERATOR_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(ITERATOR_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        
+        if (id == Id_constructor) {
+            return jsConstructor(cx, scope, thisObj, args);
+        }
+
+        if (!(thisObj instanceof NativeIterator))
+            throw incompatibleCallError(f);
+        
+        NativeIterator iterator = (NativeIterator) thisObj;
+        
+        switch (id) {
+
+          case Id_next: 
+            return iterator.next(cx, scope);
+
+          case Id___iterator__:
+            /// XXX: what about argument? SpiderMonkey apparently ignores it
+            return thisObj;
+
+          default: 
+            throw new IllegalArgumentException(String.valueOf(id));
+        }
+    }
+    
+    /* the javascript constructor */
+    private static Object jsConstructor(Context cx, Scriptable scope, 
+                                        Scriptable thisObj, Object[] args)
+    {
+        if (args.length == 0 || args[0] == null || 
+            args[0] == Undefined.instance)
+        {
+            throw ScriptRuntime.typeError1("msg.no.properties", 
+                                           ScriptRuntime.toString(args[0]));
+        }
+        Scriptable obj = ScriptRuntime.toObject(scope, args[0]);
+        boolean keyOnly = args.length > 1 && ScriptRuntime.toBoolean(args[1]);
+        if (thisObj != null) {
+            // Called as a function. Convert to iterator if possible.
+          
+            // For objects that implement java.lang.Iterable or
+            // java.util.Iterator, have JavaScript Iterator call the underlying
+            // iteration methods
+            Iterator iterator = 
+                VMBridge.instance.getJavaIterator(cx, scope, obj);
+            if (iterator != null) {
+                scope = ScriptableObject.getTopLevelScope(scope);
+                return cx.getWrapFactory().wrap(cx, scope,
+                        new WrappedJavaIterator(iterator, scope),
+                        WrappedJavaIterator.class);
+            }
+            
+            // Otherwise, just call the runtime routine
+            Scriptable jsIterator = ScriptRuntime.toIterator(cx, scope, obj, 
+                                                             keyOnly);
+            if (jsIterator != null) {
+                return jsIterator;
+            }
+        }
+        
+        // Otherwise, just set up to iterate over the properties of the object.
+        // Do not call __iterator__ method.
+        Object objectIterator = ScriptRuntime.enumInit(obj, cx,
+            keyOnly ? ScriptRuntime.ENUMERATE_KEYS_NO_ITERATOR
+                    : ScriptRuntime.ENUMERATE_ARRAY_NO_ITERATOR);
+        ScriptRuntime.setEnumNumbers(objectIterator, true);
+        NativeIterator result = new NativeIterator(objectIterator);
+        result.setPrototype(NativeIterator.getClassPrototype(scope, 
+                                result.getClassName()));
+        result.setParentScope(scope);
+        return result;
+    }
+    
+    private Object next(Context cx, Scriptable scope) {
+        Boolean b = ScriptRuntime.enumNext(this.objectIterator);
+        if (!b.booleanValue()) {
+            // Out of values. Throw StopIteration.
+            throw new JavaScriptException(
+                NativeIterator.getStopIterationObject(scope), null, 0);
+        }
+        return ScriptRuntime.enumId(this.objectIterator, cx);
+    }
+    
+    static public class WrappedJavaIterator
+    {
+        WrappedJavaIterator(Iterator iterator, Scriptable scope) {
+            this.iterator = iterator;
+            this.scope = scope;
+        }
+
+        public Object next() {
+            if (!iterator.hasNext()) {
+                // Out of values. Throw StopIteration.
+                throw new JavaScriptException(
+                    NativeIterator.getStopIterationObject(scope), null, 0);
+            }
+            return iterator.next();
+        }
+
+        public Object __iterator__(boolean b) {
+            return this;
+        }
+
+        private Iterator iterator;
+        private Scriptable scope;
+    }
+    
+// #string_id_map#
+
+    protected int findPrototypeId(String s) {
+        int id;
+// #generated# Last update: 2007-06-11 09:43:19 EDT
+        L0: { id = 0; String X = null;
+            int s_length = s.length();
+            if (s_length==4) { X="next";id=Id_next; }
+            else if (s_length==11) { X="constructor";id=Id_constructor; }
+            else if (s_length==12) { X="__iterator__";id=Id___iterator__; }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor           = 1,
+        Id_next                  = 2,
+        Id___iterator__          = 3,
+        MAX_PROTOTYPE_ID         = 3;
+
+// #/string_id_map#
+
+    private Object objectIterator;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaArray.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaArray.java
new file mode 100644
index 0000000..2f711a0
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaArray.java
@@ -0,0 +1,168 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Frank Mitchell
+ *   Mike Shaver
+ *   Kemal Bayram
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.Array;
+
+/**
+ * This class reflects Java arrays into the JavaScript environment.
+ *
+ * @author Mike Shaver
+ * @see NativeJavaClass
+ * @see NativeJavaObject
+ * @see NativeJavaPackage
+ */
+
+public class NativeJavaArray extends NativeJavaObject
+{
+    static final long serialVersionUID = -924022554283675333L;
+
+    public String getClassName() {
+        return "JavaArray";
+    }
+
+    public static NativeJavaArray wrap(Scriptable scope, Object array) {
+        return new NativeJavaArray(scope, array);
+    }
+
+    public Object unwrap() {
+        return array;
+    }
+
+    public NativeJavaArray(Scriptable scope, Object array) {
+        super(scope, null, ScriptRuntime.ObjectClass);
+        Class cl = array.getClass();
+        if (!cl.isArray()) {
+            throw new RuntimeException("Array expected");
+        }
+        this.array = array;
+        this.length = Array.getLength(array);
+        this.cls = cl.getComponentType();
+    }
+
+    public boolean has(String id, Scriptable start) {
+        return id.equals("length") || super.has(id, start);
+    }
+
+    public boolean has(int index, Scriptable start) {
+        return 0 <= index && index < length;
+    }
+
+    public Object get(String id, Scriptable start) {
+        if (id.equals("length"))
+            return new Integer(length);
+        Object result = super.get(id, start);
+        if (result == NOT_FOUND &&
+            !ScriptableObject.hasProperty(getPrototype(), id))
+        {
+            throw Context.reportRuntimeError2(
+                "msg.java.member.not.found", array.getClass().getName(), id);
+        }
+        return result;
+    }
+
+    public Object get(int index, Scriptable start) {
+        if (0 <= index && index < length) {
+            Context cx = Context.getContext();
+            Object obj = Array.get(array, index);
+            return cx.getWrapFactory().wrap(cx, this, obj, cls);
+        }
+        return Undefined.instance;
+    }
+
+    public void put(String id, Scriptable start, Object value) {
+        // Ignore assignments to "length"--it's readonly.
+        if (!id.equals("length"))
+            throw Context.reportRuntimeError1(
+                "msg.java.array.member.not.found", id);
+    }
+
+    public void put(int index, Scriptable start, Object value) {
+        if (0 <= index && index < length) {
+            Array.set(array, index, Context.jsToJava(value, cls));
+        }
+        else {
+            throw Context.reportRuntimeError2(
+                "msg.java.array.index.out.of.bounds", String.valueOf(index),
+                String.valueOf(length - 1));
+        }
+    }
+
+    public Object getDefaultValue(Class hint) {
+        if (hint == null || hint == ScriptRuntime.StringClass)
+            return array.toString();
+        if (hint == ScriptRuntime.BooleanClass)
+            return Boolean.TRUE;
+        if (hint == ScriptRuntime.NumberClass)
+            return ScriptRuntime.NaNobj;
+        return this;
+    }
+
+    public Object[] getIds() {
+        Object[] result = new Object[length];
+        int i = length;
+        while (--i >= 0)
+            result[i] = new Integer(i);
+        return result;
+    }
+
+    public boolean hasInstance(Scriptable value) {
+        if (!(value instanceof Wrapper))
+            return false;
+        Object instance = ((Wrapper)value).unwrap();
+        return cls.isInstance(instance);
+    }
+
+    public Scriptable getPrototype() {
+        if (prototype == null) {
+            prototype =
+                ScriptableObject.getClassPrototype(this.getParentScope(),
+                                                   "Array");
+        }
+        return prototype;
+    }
+
+    Object array;
+    int length;
+    Class cls;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaClass.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaClass.java
new file mode 100644
index 0000000..ab8af5c
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaClass.java
@@ -0,0 +1,320 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Frank Mitchell
+ *   Mike Shaver
+ *   Kurt Westerfeld
+ *   Kemal Bayram
+ *   Ulrike Mueller <umueller@demandware.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.*;
+import java.util.Hashtable;
+
+/**
+ * This class reflects Java classes into the JavaScript environment, mainly
+ * for constructors and static members.  We lazily reflect properties,
+ * and currently do not guarantee that a single j.l.Class is only
+ * reflected once into the JS environment, although we should.
+ * The only known case where multiple reflections
+ * are possible occurs when a j.l.Class is wrapped as part of a
+ * method return or property access, rather than by walking the
+ * Packages/java tree.
+ *
+ * @author Mike Shaver
+ * @see NativeJavaArray
+ * @see NativeJavaObject
+ * @see NativeJavaPackage
+ */
+
+public class NativeJavaClass extends NativeJavaObject implements Function
+{
+    static final long serialVersionUID = -6460763940409461664L;
+
+    // Special property for getting the underlying Java class object.
+    static final String javaClassPropertyName = "__javaObject__";
+
+    public NativeJavaClass() {
+    }
+
+    public NativeJavaClass(Scriptable scope, Class cl) {
+        this.parent = scope;
+        this.javaObject = cl;
+        initMembers();
+    }
+
+    protected void initMembers() {
+        Class cl = (Class)javaObject;
+        members = JavaMembers.lookupClass(parent, cl, cl, false);
+        staticFieldAndMethods
+            = members.getFieldAndMethodsObjects(this, cl, true);
+    }
+
+    public String getClassName() {
+        return "JavaClass";
+    }
+
+    public boolean has(String name, Scriptable start) {
+        return members.has(name, true) || javaClassPropertyName.equals(name);
+    }
+
+    public Object get(String name, Scriptable start) {
+        // When used as a constructor, ScriptRuntime.newObject() asks
+        // for our prototype to create an object of the correct type.
+        // We don't really care what the object is, since we're returning
+        // one constructed out of whole cloth, so we return null.
+        if (name.equals("prototype"))
+            return null;
+
+         if (staticFieldAndMethods != null) {
+            Object result = staticFieldAndMethods.get(name);
+            if (result != null)
+                return result;
+        }
+
+        if (members.has(name, true)) {
+            return members.get(this, name, javaObject, true);
+        }
+        
+        if (javaClassPropertyName.equals(name)) {
+            Context cx = Context.getContext();
+            Scriptable scope = ScriptableObject.getTopLevelScope(start);
+            return cx.getWrapFactory().wrap(cx, scope, javaObject, 
+                                            ScriptRuntime.ClassClass);
+        }
+        
+        // experimental:  look for nested classes by appending $name to
+        // current class' name.
+        Class nestedClass = findNestedClass(getClassObject(), name);
+        if (nestedClass != null) {
+            NativeJavaClass nestedValue = new NativeJavaClass
+                (ScriptableObject.getTopLevelScope(this), nestedClass);
+            nestedValue.setParentScope(this);
+            return nestedValue;
+        }
+        
+        throw members.reportMemberNotFound(name);
+    }
+
+    public void put(String name, Scriptable start, Object value) {
+        members.put(this, name, javaObject, value, true);
+    }
+
+    public Object[] getIds() {
+        return members.getIds(true);
+    }
+
+    public Class getClassObject() {
+        return (Class) super.unwrap();
+    }
+
+    public Object getDefaultValue(Class hint) {
+        if (hint == null || hint == ScriptRuntime.StringClass)
+            return this.toString();
+        if (hint == ScriptRuntime.BooleanClass)
+            return Boolean.TRUE;
+        if (hint == ScriptRuntime.NumberClass)
+            return ScriptRuntime.NaNobj;
+        return this;
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        // If it looks like a "cast" of an object to this class type,
+        // walk the prototype chain to see if there's a wrapper of a
+        // object that's an instanceof this class.
+        if (args.length == 1 && args[0] instanceof Scriptable) {
+            Class c = getClassObject();
+            Scriptable p = (Scriptable) args[0];
+            do {
+                if (p instanceof Wrapper) {
+                    Object o = ((Wrapper) p).unwrap();
+                    if (c.isInstance(o))
+                        return p;
+                }
+                p = p.getPrototype();
+            } while (p != null);
+        }
+        return construct(cx, scope, args);
+    }
+
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        Class classObject = getClassObject();
+        int modifiers = classObject.getModifiers();
+        if (! (Modifier.isInterface(modifiers) ||
+               Modifier.isAbstract(modifiers)))
+        {
+            MemberBox[] ctors = members.ctors;
+            int index = NativeJavaMethod.findFunction(cx, ctors, args);
+            if (index < 0) {
+                String sig = NativeJavaMethod.scriptSignature(args);
+                throw Context.reportRuntimeError2(
+                    "msg.no.java.ctor", classObject.getName(), sig);
+            }
+
+            // Found the constructor, so try invoking it.
+            return constructSpecific(cx, scope, args, ctors[index]);
+        } else {
+            Scriptable topLevel = ScriptableObject.getTopLevelScope(this);
+            String msg = "";
+            try {
+                // trying to construct an interface; use JavaAdapter to
+                // construct a new class on the fly that implements this
+                // interface.
+                Object v = topLevel.get("JavaAdapter", topLevel);
+                if (v != NOT_FOUND) {
+                    Function f = (Function) v;
+                    Object[] adapterArgs = { this, args[0] };
+                    return f.construct(cx, topLevel,adapterArgs);
+                }
+            } catch (Exception ex) {
+                // fall through to error
+                String m = ex.getMessage();
+                if (m != null)
+                    msg = m;
+            }
+            throw Context.reportRuntimeError2(
+                "msg.cant.instantiate", msg, classObject.getName());
+        }
+    }
+
+    static Scriptable constructSpecific(Context cx, Scriptable scope,
+                                        Object[] args, MemberBox ctor)
+    {
+        Scriptable topLevel = ScriptableObject.getTopLevelScope(scope);
+        Class[] argTypes = ctor.argTypes;
+      
+        if (ctor.vararg) {
+            // marshall the explicit parameter
+            Object[] newArgs = new Object[argTypes.length];
+            for (int i = 0; i < argTypes.length-1; i++) {
+                newArgs[i] = Context.jsToJava(args[i], argTypes[i]);
+            }
+            
+            Object varArgs;
+            
+            // Handle special situation where a single variable parameter
+            // is given and it is a Java or ECMA array.
+            if (args.length == argTypes.length &&
+                (args[args.length-1] == null ||
+                 args[args.length-1] instanceof NativeArray ||
+                 args[args.length-1] instanceof NativeJavaArray))
+            {
+                // convert the ECMA array into a native array
+                varArgs = Context.jsToJava(args[args.length-1], 
+                                           argTypes[argTypes.length - 1]);
+            } else {            
+                // marshall the variable parameter
+                Class componentType = argTypes[argTypes.length - 1].
+                                        getComponentType();
+                varArgs = Array.newInstance(componentType, 
+                                            args.length - argTypes.length + 1);            
+                for (int i=0; i < Array.getLength(varArgs); i++) {
+                    Object value = Context.jsToJava(args[argTypes.length-1 + i],
+                                                    componentType);
+                    Array.set(varArgs, i, value);
+                }
+            }
+            
+            // add varargs
+            newArgs[argTypes.length-1] = varArgs;
+            // replace the original args with the new one
+            args = newArgs;
+        } else {
+            Object[] origArgs = args;
+            for (int i = 0; i < args.length; i++) {
+                Object arg = args[i];
+                Object x = Context.jsToJava(arg, argTypes[i]);
+                if (x != arg) {
+                    if (args == origArgs) {
+                        args = origArgs.clone();
+                    }
+                    args[i] = x;
+                }
+            }
+        }
+        
+        Object instance = ctor.newInstance(args);
+        // we need to force this to be wrapped, because construct _has_
+        // to return a scriptable
+        return cx.getWrapFactory().wrapNewObject(cx, topLevel, instance);
+    }
+
+    public String toString() {
+        return "[JavaClass " + getClassObject().getName() + "]";
+    }
+
+    /**
+     * Determines if prototype is a wrapped Java object and performs
+     * a Java "instanceof".
+     * Exception: if value is an instance of NativeJavaClass, it isn't
+     * considered an instance of the Java class; this forestalls any
+     * name conflicts between java.lang.Class's methods and the
+     * static methods exposed by a JavaNativeClass.
+     */
+    public boolean hasInstance(Scriptable value) {
+
+        if (value instanceof Wrapper &&
+            !(value instanceof NativeJavaClass)) {
+            Object instance = ((Wrapper)value).unwrap();
+
+            return getClassObject().isInstance(instance);
+        }
+
+        // value wasn't something we understand
+        return false;
+    }
+
+    private static Class findNestedClass(Class parentClass, String name) {
+        String nestedClassName = parentClass.getName() + '$' + name;
+        ClassLoader loader = parentClass.getClassLoader();
+        if (loader == null) {
+            // ALERT: if loader is null, nested class should be loaded
+            // via system class loader which can be different from the
+            // loader that brought Rhino classes that Class.forName() would
+            // use, but ClassLoader.getSystemClassLoader() is Java 2 only
+            return Kit.classOrNull(nestedClassName);
+        } else {
+            return Kit.classOrNull(loader, nestedClassName);
+        }
+    }
+
+    private Hashtable staticFieldAndMethods;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaConstructor.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaConstructor.java
new file mode 100644
index 0000000..530bf81
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaConstructor.java
@@ -0,0 +1,85 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Frank Mitchell
+ *   Mike Shaver
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class reflects a single Java constructor into the JavaScript
+ * environment.  It satisfies a request for an overloaded constructor,
+ * as introduced in LiveConnect 3.
+ * All NativeJavaConstructors behave as JSRef `bound' methods, in that they
+ * always construct the same NativeJavaClass regardless of any reparenting
+ * that may occur.
+ *
+ * @author Frank Mitchell
+ * @see NativeJavaMethod
+ * @see NativeJavaPackage
+ * @see NativeJavaClass
+ */
+
+public class NativeJavaConstructor extends BaseFunction
+{
+    static final long serialVersionUID = -8149253217482668463L;
+
+    MemberBox ctor;
+
+    public NativeJavaConstructor(MemberBox ctor)
+    {
+        this.ctor = ctor;
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        return NativeJavaClass.constructSpecific(cx, scope, args, ctor);
+    }
+
+    public String getFunctionName()
+    {
+        String sig = JavaMembers.liveConnectSignature(ctor.argTypes);
+        return "<init>".concat(sig);
+    }
+
+    public String toString()
+    {
+        return "[JavaConstructor " + ctor.getName() + "]";
+    }
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaMethod.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaMethod.java
new file mode 100644
index 0000000..eb66f40
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaMethod.java
@@ -0,0 +1,576 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Frank Mitchell
+ *   Mike Shaver
+ *   Ulrike Mueller <umueller@demandware.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.*;
+
+/**
+ * This class reflects Java methods into the JavaScript environment and
+ * handles overloading of methods.
+ *
+ * @author Mike Shaver
+ * @see NativeJavaArray
+ * @see NativeJavaPackage
+ * @see NativeJavaClass
+ */
+
+public class NativeJavaMethod extends BaseFunction
+{
+    static final long serialVersionUID = -3440381785576412928L;
+
+    NativeJavaMethod(MemberBox[] methods)
+    {
+        this.functionName = methods[0].getName();
+        this.methods = methods;
+    }
+
+    NativeJavaMethod(MemberBox method, String name)
+    {
+        this.functionName = name;
+        this.methods = new MemberBox[] { method };
+    }
+
+    public NativeJavaMethod(Method method, String name)
+    {
+        this(new MemberBox(method), name);
+    }
+
+    public String getFunctionName()
+    {
+        return functionName;
+    }
+
+    static String scriptSignature(Object[] values)
+    {
+        StringBuffer sig = new StringBuffer();
+        for (int i = 0; i != values.length; ++i) {
+            Object value = values[i];
+
+            String s;
+            if (value == null) {
+                s = "null";
+            } else if (value instanceof Boolean) {
+                s = "boolean";
+            } else if (value instanceof String) {
+                s = "string";
+            } else if (value instanceof Number) {
+                s = "number";
+            } else if (value instanceof Scriptable) {
+                if (value instanceof Undefined) {
+                    s = "undefined";
+                } else if (value instanceof Wrapper) {
+                    Object wrapped = ((Wrapper)value).unwrap();
+                    s = wrapped.getClass().getName();
+                } else if (value instanceof Function) {
+                    s = "function";
+                } else {
+                    s = "object";
+                }
+            } else {
+                s = JavaMembers.javaSignature(value.getClass());
+            }
+
+            if (i != 0) {
+                sig.append(',');
+            }
+            sig.append(s);
+        }
+        return sig.toString();
+    }
+
+    String decompile(int indent, int flags)
+    {
+        StringBuffer sb = new StringBuffer();
+        boolean justbody = (0 != (flags & Decompiler.ONLY_BODY_FLAG));
+        if (!justbody) {
+            sb.append("function ");
+            sb.append(getFunctionName());
+            sb.append("() {");
+        }
+        sb.append("/*\n");
+        sb.append(toString());
+        sb.append(justbody ? "*/\n" : "*/}\n");
+        return sb.toString();
+    }
+
+    public String toString()
+    {
+        StringBuffer sb = new StringBuffer();
+        for (int i = 0, N = methods.length; i != N; ++i) {
+            Method method = methods[i].method();
+            sb.append(JavaMembers.javaSignature(method.getReturnType()));
+            sb.append(' ');
+            sb.append(method.getName());
+            sb.append(JavaMembers.liveConnectSignature(methods[i].argTypes));
+            sb.append('\n');
+        }
+        return sb.toString();
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        // Find a method that matches the types given.
+        if (methods.length == 0) {
+            throw new RuntimeException("No methods defined for call");
+        }
+
+        int index = findFunction(cx, methods, args);
+        if (index < 0) {
+            Class c = methods[0].method().getDeclaringClass();
+            String sig = c.getName() + '.' + getFunctionName() + '(' +
+                         scriptSignature(args) + ')';
+            throw Context.reportRuntimeError1("msg.java.no_such_method", sig);
+        }
+
+        MemberBox meth = methods[index];
+        Class[] argTypes = meth.argTypes;
+      
+        if (meth.vararg) {
+            // marshall the explicit parameters
+            Object[] newArgs = new Object[argTypes.length];
+            for (int i = 0; i < argTypes.length-1; i++) {
+                newArgs[i] = Context.jsToJava(args[i], argTypes[i]);
+            }
+            
+            Object varArgs;
+            
+            // Handle special situation where a single variable parameter
+            // is given and it is a Java or ECMA array or is null.
+            if (args.length == argTypes.length &&
+                (args[args.length-1] == null ||
+                 args[args.length-1] instanceof NativeArray ||
+                 args[args.length-1] instanceof NativeJavaArray))
+            {
+                // convert the ECMA array into a native array
+                varArgs = Context.jsToJava(args[args.length-1], 
+                                           argTypes[argTypes.length - 1]);
+            } else {            
+                // marshall the variable parameters
+                Class componentType = argTypes[argTypes.length - 1].
+                                         getComponentType();
+                varArgs = Array.newInstance(componentType, 
+                                            args.length - argTypes.length + 1);            
+                for (int i = 0; i < Array.getLength(varArgs); i++) {
+                    Object value = Context.jsToJava(args[argTypes.length-1 + i], 
+                                                    componentType);
+                    Array.set(varArgs, i, value);
+                }
+            }
+            
+            // add varargs
+            newArgs[argTypes.length-1] = varArgs;
+            // replace the original args with the new one
+            args = newArgs;
+        } else {  
+            // First, we marshall the args.
+            Object[] origArgs = args;
+            for (int i = 0; i < args.length; i++) {
+                Object arg = args[i];
+                Object coerced = Context.jsToJava(arg, argTypes[i]);
+                if (coerced != arg) {
+                    if (origArgs == args) {
+                        args = args.clone();
+                    }
+                    args[i] = coerced;
+                }
+            }
+        }
+        Object javaObject;
+        if (meth.isStatic()) {
+            javaObject = null;  // don't need an object
+        } else {
+            Scriptable o = thisObj;
+            Class c = meth.getDeclaringClass();
+            for (;;) {
+                if (o == null) {
+                    throw Context.reportRuntimeError3(
+                        "msg.nonjava.method", getFunctionName(),
+                        ScriptRuntime.toString(thisObj), c.getName());
+                }
+                if (o instanceof Wrapper) {
+                    javaObject = ((Wrapper)o).unwrap();
+                    if (c.isInstance(javaObject)) {
+                        break;
+                    }
+                }
+                o = o.getPrototype();
+            }
+        }
+        if (debug) {
+            printDebug("Calling ", meth, args);
+        }
+
+        Object retval = meth.invoke(javaObject, args);
+        Class staticType = meth.method().getReturnType();
+
+        if (debug) {
+            Class actualType = (retval == null) ? null
+                                                : retval.getClass();
+            System.err.println(" ----- Returned " + retval +
+                               " actual = " + actualType +
+                               " expect = " + staticType);
+        }
+
+        Object wrapped = cx.getWrapFactory().wrap(cx, scope,
+                                                  retval, staticType);
+        if (debug) {
+            Class actualType = (wrapped == null) ? null
+                                                 : wrapped.getClass();
+            System.err.println(" ----- Wrapped as " + wrapped +
+                               " class = " + actualType);
+        }
+
+        if (wrapped == null && staticType == Void.TYPE) {
+            wrapped = Undefined.instance;
+        }
+        return wrapped;
+    }
+
+    /**
+     * Find the index of the correct function to call given the set of methods
+     * or constructors and the arguments.
+     * If no function can be found to call, return -1.
+     */
+    static int findFunction(Context cx,
+                            MemberBox[] methodsOrCtors, Object[] args)
+    {
+        if (methodsOrCtors.length == 0) {
+            return -1;
+        } else if (methodsOrCtors.length == 1) {
+            MemberBox member = methodsOrCtors[0];
+            Class[] argTypes = member.argTypes;
+            int alength = argTypes.length;
+            
+            if (member.vararg) {
+                alength--;
+                if ( alength > args.length) {
+                    return -1;
+                }
+            } else {
+                if (alength != args.length) {
+                    return -1;
+                }
+            }
+            for (int j = 0; j != alength; ++j) {
+                if (!NativeJavaObject.canConvert(args[j], argTypes[j])) {
+                    if (debug) printDebug("Rejecting (args can't convert) ",
+                                          member, args);
+                    return -1;
+                }
+            }
+            if (debug) printDebug("Found ", member, args);
+            return 0;
+        }
+
+        int firstBestFit = -1;
+        int[] extraBestFits = null;
+        int extraBestFitsCount = 0;
+
+      search:
+        for (int i = 0; i < methodsOrCtors.length; i++) {
+            MemberBox member = methodsOrCtors[i];
+            Class[] argTypes = member.argTypes;
+            int alength = argTypes.length;
+            if (member.vararg) {
+                alength--;
+                if ( alength > args.length) {
+                    continue search;
+                }
+            } else {
+                if (alength != args.length) {
+                    continue search;
+                }
+            }
+            for (int j = 0; j < alength; j++) {
+                if (!NativeJavaObject.canConvert(args[j], argTypes[j])) {
+                    if (debug) printDebug("Rejecting (args can't convert) ",
+                                          member, args);
+                    continue search;
+                }
+            }
+            if (firstBestFit < 0) {
+                if (debug) printDebug("Found first applicable ", member, args);
+                firstBestFit = i;
+            } else {
+                // Compare with all currently fit methods.
+                // The loop starts from -1 denoting firstBestFit and proceed
+                // until extraBestFitsCount to avoid extraBestFits allocation
+                // in the most common case of no ambiguity
+                int betterCount = 0; // number of times member was prefered over
+                                     // best fits
+                int worseCount = 0;  // number of times best fits were prefered
+                                     // over member
+                for (int j = -1; j != extraBestFitsCount; ++j) {
+                    int bestFitIndex;
+                    if (j == -1) {
+                        bestFitIndex = firstBestFit;
+                    } else {
+                        bestFitIndex = extraBestFits[j];
+                    }
+                    MemberBox bestFit = methodsOrCtors[bestFitIndex];
+                    if (cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS) &&
+                        (bestFit.member().getModifiers() & Modifier.PUBLIC) !=
+                            (member.member().getModifiers() & Modifier.PUBLIC))
+                    {
+                        // When FEATURE_ENHANCED_JAVA_ACCESS gives us access
+                        // to non-public members, continue to prefer public
+                        // methods in overloading
+                        if ((bestFit.member().getModifiers() & Modifier.PUBLIC) == 0)
+                            ++betterCount;
+                        else
+                            ++worseCount;
+                    } else {
+                        int preference = preferSignature(args, argTypes,
+                                                         member.vararg,
+                                                         bestFit.argTypes,
+                                                         bestFit.vararg );
+                        if (preference == PREFERENCE_AMBIGUOUS) {
+                            break;
+                        } else if (preference == PREFERENCE_FIRST_ARG) {
+                            ++betterCount;
+                        } else if (preference == PREFERENCE_SECOND_ARG) {
+                            ++worseCount;
+                        } else {
+                            if (preference != PREFERENCE_EQUAL) Kit.codeBug();
+                            // This should not happen in theory
+                            // but on some JVMs, Class.getMethods will return all
+                            // static methods of the class heirarchy, even if
+                            // a derived class's parameters match exactly.
+                            // We want to call the dervied class's method.
+                            if (bestFit.isStatic()
+                                && bestFit.getDeclaringClass().isAssignableFrom(
+                                       member.getDeclaringClass()))
+                            {
+                                // On some JVMs, Class.getMethods will return all
+                                // static methods of the class heirarchy, even if
+                                // a derived class's parameters match exactly.
+                                // We want to call the dervied class's method.
+                                if (debug) printDebug(
+                                    "Substituting (overridden static)",
+                                    member, args);
+                                if (j == -1) {
+                                    firstBestFit = i;
+                                } else {
+                                    extraBestFits[j] = i;
+                                }
+                            } else {
+                                if (debug) printDebug(
+                                    "Ignoring same signature member ",
+                                    member, args);
+                            }
+                            continue search;
+                        }
+                    }
+                }
+                if (betterCount == 1 + extraBestFitsCount) {
+                    // member was prefered over all best fits
+                    if (debug) printDebug(
+                        "New first applicable ", member, args);
+                    firstBestFit = i;
+                    extraBestFitsCount = 0;
+                } else if (worseCount == 1 + extraBestFitsCount) {
+                    // all best fits were prefered over member, ignore it
+                    if (debug) printDebug(
+                        "Rejecting (all current bests better) ", member, args);
+                } else {
+                    // some ambiguity was present, add member to best fit set
+                    if (debug) printDebug(
+                        "Added to best fit set ", member, args);
+                    if (extraBestFits == null) {
+                        // Allocate maximum possible array
+                        extraBestFits = new int[methodsOrCtors.length - 1];
+                    }
+                    extraBestFits[extraBestFitsCount] = i;
+                    ++extraBestFitsCount;
+                }
+            }
+        }
+
+        if (firstBestFit < 0) {
+            // Nothing was found
+            return -1;
+        } else if (extraBestFitsCount == 0) {
+            // single best fit
+            return firstBestFit;
+        }
+
+        // report remaining ambiguity
+        StringBuffer buf = new StringBuffer();
+        for (int j = -1; j != extraBestFitsCount; ++j) {
+            int bestFitIndex;
+            if (j == -1) {
+                bestFitIndex = firstBestFit;
+            } else {
+                bestFitIndex = extraBestFits[j];
+            }
+            buf.append("\n    ");
+            buf.append(methodsOrCtors[bestFitIndex].toJavaDeclaration());
+        }
+
+        MemberBox firstFitMember = methodsOrCtors[firstBestFit];
+        String memberName = firstFitMember.getName();
+        String memberClass = firstFitMember.getDeclaringClass().getName();
+
+        if (methodsOrCtors[0].isMethod()) {
+            throw Context.reportRuntimeError3(
+                "msg.constructor.ambiguous",
+                memberName, scriptSignature(args), buf.toString());
+        } else {
+            throw Context.reportRuntimeError4(
+                "msg.method.ambiguous", memberClass,
+                memberName, scriptSignature(args), buf.toString());
+        }
+    }
+
+    /** Types are equal */
+    private static final int PREFERENCE_EQUAL      = 0;
+    private static final int PREFERENCE_FIRST_ARG  = 1;
+    private static final int PREFERENCE_SECOND_ARG = 2;
+    /** No clear "easy" conversion */
+    private static final int PREFERENCE_AMBIGUOUS  = 3;
+
+    /**
+     * Determine which of two signatures is the closer fit.
+     * Returns one of PREFERENCE_EQUAL, PREFERENCE_FIRST_ARG,
+     * PREFERENCE_SECOND_ARG, or PREFERENCE_AMBIGUOUS.
+     */
+    private static int preferSignature(Object[] args, 
+                                       Class[] sig1,
+                                       boolean vararg1,
+                                       Class[] sig2,
+                                       boolean vararg2 )
+    {
+        // TODO: This test is pretty primitive. It bascially prefers
+        // a matching no vararg method over a vararg method independent
+        // of the type conversion cost. This can lead to unexpected results.
+        int alength = args.length;
+        if (!vararg1 && vararg2) {
+            // prefer the no vararg signature
+            return PREFERENCE_FIRST_ARG;
+        } else if (vararg1 && !vararg2) {
+            // prefer the no vararg signature
+            return PREFERENCE_SECOND_ARG;
+        } else if (vararg1 && vararg2) {
+            if (sig1.length < sig2.length) {
+                // prefer the signature with more explicit types
+                return PREFERENCE_SECOND_ARG;                
+            } else if (sig1.length > sig2.length) {
+                // prefer the signature with more explicit types
+                return PREFERENCE_FIRST_ARG;                
+            } else {
+                // Both are varargs and have the same length, so make the
+                // decision with the explicit args. 
+                alength = Math.min(args.length, sig1.length-1);
+            }
+        }
+        
+        int totalPreference = 0;
+        for (int j = 0; j < alength; j++) {
+            Class type1 = sig1[j];
+            Class type2 = sig2[j];
+            if (type1 == type2) {
+                continue;
+            }
+            Object arg = args[j];
+
+            // Determine which of type1, type2 is easier to convert from arg.
+
+            int rank1 = NativeJavaObject.getConversionWeight(arg, type1);
+            int rank2 = NativeJavaObject.getConversionWeight(arg, type2);
+
+            int preference;
+            if (rank1 < rank2) {
+                preference = PREFERENCE_FIRST_ARG;
+            } else if (rank1 > rank2) {
+                preference = PREFERENCE_SECOND_ARG;
+            } else {
+                // Equal ranks
+                if (rank1 == NativeJavaObject.CONVERSION_NONTRIVIAL) {
+                    if (type1.isAssignableFrom(type2)) {
+                        preference = PREFERENCE_SECOND_ARG;
+                    } else if (type2.isAssignableFrom(type1)) {
+                        preference = PREFERENCE_FIRST_ARG;
+                    } else {
+                        preference = PREFERENCE_AMBIGUOUS;
+                    }
+                } else {
+                    preference = PREFERENCE_AMBIGUOUS;
+                }
+            }
+
+            totalPreference |= preference;
+
+            if (totalPreference == PREFERENCE_AMBIGUOUS) {
+                break;
+            }
+        }
+        return totalPreference;
+    }
+
+
+    private static final boolean debug = false;
+
+    private static void printDebug(String msg, MemberBox member,
+                                   Object[] args)
+    {
+        if (debug) {
+            StringBuffer sb = new StringBuffer();
+            sb.append(" ----- ");
+            sb.append(msg);
+            sb.append(member.getDeclaringClass().getName());
+            sb.append('.');
+            if (member.isMethod()) {
+                sb.append(member.getName());
+            }
+            sb.append(JavaMembers.liveConnectSignature(member.argTypes));
+            sb.append(" for arguments (");
+            sb.append(scriptSignature(args));
+            sb.append(')');
+            System.out.println(sb);
+        }
+    }
+
+    MemberBox[] methods;
+    private String functionName;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaObject.java
new file mode 100644
index 0000000..3d27852
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaObject.java
@@ -0,0 +1,1002 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Frank Mitchell
+ *   Mike Shaver
+ *   Kemal Bayram
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.*;
+import java.lang.reflect.*;
+import java.util.Hashtable;
+import java.util.Date;
+
+/**
+ * This class reflects non-Array Java objects into the JavaScript environment.  It
+ * reflect fields directly, and uses NativeJavaMethod objects to reflect (possibly
+ * overloaded) methods.<p>
+ *
+ * @author Mike Shaver
+ * @see NativeJavaArray
+ * @see NativeJavaPackage
+ * @see NativeJavaClass
+ */
+
+public class NativeJavaObject implements Scriptable, Wrapper, Serializable
+{
+    static final long serialVersionUID = -6948590651130498591L;
+
+    public NativeJavaObject() { }
+
+    public NativeJavaObject(Scriptable scope, Object javaObject,
+                            Class staticType)
+    {
+        this(scope, javaObject, staticType, false);
+    }
+
+    public NativeJavaObject(Scriptable scope, Object javaObject,
+                            Class staticType, boolean isAdapter)
+    {
+        this.parent = ScriptableObject.getVeryTopLevelScope(scope); // APPJET
+        this.javaObject = javaObject;
+        this.staticType = staticType;
+        this.isAdapter = isAdapter;
+        initMembers();
+    }
+
+    protected void initMembers() {
+        Class dynamicType;
+        if (javaObject != null) {
+            dynamicType = javaObject.getClass();
+        } else {
+            dynamicType = staticType;
+        }
+        members = JavaMembers.lookupClass(parent, dynamicType, staticType, 
+                                          isAdapter);
+        fieldAndMethods
+            = members.getFieldAndMethodsObjects(this, javaObject, false);
+    }
+
+    public boolean has(String name, Scriptable start) {
+        return members.has(name, false);
+    }
+
+    public boolean has(int index, Scriptable start) {
+        return false;
+    }
+
+    public Object get(String name, Scriptable start) {
+        if (fieldAndMethods != null) {
+            Object result = fieldAndMethods.get(name);
+            if (result != null) {
+                return result;
+            }
+        }
+        // TODO: passing 'this' as the scope is bogus since it has
+        //  no parent scope
+        return members.get(this, name, javaObject, false);
+    }
+
+    public Object get(int index, Scriptable start) {
+        throw members.reportMemberNotFound(Integer.toString(index));
+    }
+
+    public void put(String name, Scriptable start, Object value) {
+        // We could be asked to modify the value of a property in the
+        // prototype. Since we can't add a property to a Java object,
+        // we modify it in the prototype rather than copy it down.
+        if (prototype == null || members.has(name, false))
+            members.put(this, name, javaObject, value, false);
+        else
+            prototype.put(name, prototype, value);
+    }
+
+    public void put(int index, Scriptable start, Object value) {
+        throw members.reportMemberNotFound(Integer.toString(index));
+    }
+
+    public boolean hasInstance(Scriptable value) {
+        // This is an instance of a Java class, so always return false
+        return false;
+    }
+
+    public void delete(String name) {
+    }
+
+    public void delete(int index) {
+    }
+
+    public Scriptable getPrototype() {
+        if (prototype == null && javaObject instanceof String) {
+            return ScriptableObject.getClassPrototype(parent, "String");
+        }
+        return prototype;
+    }
+
+    /**
+     * Sets the prototype of the object.
+     */
+    public void setPrototype(Scriptable m) {
+        prototype = m;
+    }
+
+    /**
+     * Returns the parent (enclosing) scope of the object.
+     */
+    public Scriptable getParentScope() {
+        return parent;
+    }
+
+    /**
+     * Sets the parent (enclosing) scope of the object.
+     */
+    public void setParentScope(Scriptable m) {
+        parent = m;
+    }
+
+    public Object[] getIds() {
+        return members.getIds(false);
+    }
+
+/**
+@deprecated Use {@link Context#getWrapFactory()} together with calling {@link
+WrapFactory#wrap(Context, Scriptable, Object, Class)}
+*/
+    public static Object wrap(Scriptable scope, Object obj, Class staticType) {
+
+        Context cx = Context.getContext();
+        return cx.getWrapFactory().wrap(cx, scope, obj, staticType);
+    }
+
+    public Object unwrap() {
+        return javaObject;
+    }
+
+    public String getClassName() {
+        return "JavaObject";
+    }
+
+    public Object getDefaultValue(Class hint)
+    {
+        Object value;
+        if (hint == null) {
+            if (javaObject instanceof Boolean) {
+                hint = ScriptRuntime.BooleanClass;
+            }
+        }
+        if (hint == null || hint == ScriptRuntime.StringClass) {
+            value = javaObject.toString();
+        } else {
+            String converterName;
+            if (hint == ScriptRuntime.BooleanClass) {
+                converterName = "booleanValue";
+            } else if (hint == ScriptRuntime.NumberClass) {
+                converterName = "doubleValue";
+            } else {
+                throw Context.reportRuntimeError0("msg.default.value");
+            }
+            Object converterObject = get(converterName, this);
+            if (converterObject instanceof Function) {
+                Function f = (Function)converterObject;
+                value = f.call(Context.getContext(), f.getParentScope(),
+                               this, ScriptRuntime.emptyArgs);
+            } else {
+                if (hint == ScriptRuntime.NumberClass
+                    && javaObject instanceof Boolean)
+                {
+                    boolean b = ((Boolean)javaObject).booleanValue();
+                    value = ScriptRuntime.wrapNumber(b ? 1.0 : 0.0);
+                } else {
+                    value = javaObject.toString();
+                }
+            }
+        }
+        return value;
+    }
+
+    /**
+     * Determine whether we can/should convert between the given type and the
+     * desired one.  This should be superceded by a conversion-cost calculation
+     * function, but for now I'll hide behind precedent.
+     */
+    public static boolean canConvert(Object fromObj, Class to) {
+        int weight = getConversionWeight(fromObj, to);
+
+        return (weight < CONVERSION_NONE);
+    }
+
+    private static final int JSTYPE_UNDEFINED   = 0; // undefined type
+    private static final int JSTYPE_NULL        = 1; // null
+    private static final int JSTYPE_BOOLEAN     = 2; // boolean
+    private static final int JSTYPE_NUMBER      = 3; // number
+    private static final int JSTYPE_STRING      = 4; // string
+    private static final int JSTYPE_JAVA_CLASS  = 5; // JavaClass
+    private static final int JSTYPE_JAVA_OBJECT = 6; // JavaObject
+    private static final int JSTYPE_JAVA_ARRAY  = 7; // JavaArray
+    private static final int JSTYPE_OBJECT      = 8; // Scriptable
+
+    static final byte CONVERSION_TRIVIAL      = 1;
+    static final byte CONVERSION_NONTRIVIAL   = 0;
+    static final byte CONVERSION_NONE         = 99;
+
+    /**
+     * Derive a ranking based on how "natural" the conversion is.
+     * The special value CONVERSION_NONE means no conversion is possible,
+     * and CONVERSION_NONTRIVIAL signals that more type conformance testing
+     * is required.
+     * Based on
+     * <a href="http://www.mozilla.org/js/liveconnect/lc3_method_overloading.html">
+     * "preferred method conversions" from Live Connect 3</a>
+     */
+    static int getConversionWeight(Object fromObj, Class to) {
+        int fromCode = getJSTypeCode(fromObj);
+
+        switch (fromCode) {
+
+        case JSTYPE_UNDEFINED:
+            if (to == ScriptRuntime.StringClass ||
+                to == ScriptRuntime.ObjectClass) {
+                return 1;
+            }
+            break;
+
+        case JSTYPE_NULL:
+            if (!to.isPrimitive()) {
+                return 1;
+            }
+            break;
+
+        case JSTYPE_BOOLEAN:
+            // "boolean" is #1
+            if (to == Boolean.TYPE) {
+                return 1;
+            }
+            else if (to == ScriptRuntime.BooleanClass) {
+                return 2;
+            }
+            else if (to == ScriptRuntime.ObjectClass) {
+                return 3;
+            }
+            else if (to == ScriptRuntime.StringClass) {
+                return 4;
+            }
+            break;
+
+        case JSTYPE_NUMBER:
+            if (to.isPrimitive()) {
+                if (to == Double.TYPE) {
+                    return 1;
+                }
+                else if (to != Boolean.TYPE) {
+                    return 1 + getSizeRank(to);
+                }
+            }
+            else {
+                if (to == ScriptRuntime.StringClass) {
+                    // native numbers are #1-8
+                    return 9;
+                }
+                else if (to == ScriptRuntime.ObjectClass) {
+                    return 10;
+                }
+                else if (ScriptRuntime.NumberClass.isAssignableFrom(to)) {
+                    // "double" is #1
+                    return 2;
+                }
+            }
+            break;
+
+        case JSTYPE_STRING:
+            if (to == ScriptRuntime.StringClass) {
+                return 1;
+            }
+            else if (to.isInstance(fromObj)) {
+                return 2;
+            }
+            else if (to.isPrimitive()) {
+                if (to == Character.TYPE) {
+                    return 3;
+                } else if (to != Boolean.TYPE) {
+                    return 4;
+                }
+            }
+            break;
+
+        case JSTYPE_JAVA_CLASS:
+            if (to == ScriptRuntime.ClassClass) {
+                return 1;
+            }
+            else if (to == ScriptRuntime.ObjectClass) {
+                return 3;
+            }
+            else if (to == ScriptRuntime.StringClass) {
+                return 4;
+            }
+            break;
+
+        case JSTYPE_JAVA_OBJECT:
+        case JSTYPE_JAVA_ARRAY:
+            Object javaObj = fromObj;
+            if (javaObj instanceof Wrapper) {
+                javaObj = ((Wrapper)javaObj).unwrap();
+            }
+            if (to.isInstance(javaObj)) {
+                return CONVERSION_NONTRIVIAL;
+            }
+            if (to == ScriptRuntime.StringClass) {
+                return 2;
+            }
+            else if (to.isPrimitive() && to != Boolean.TYPE) {
+                return (fromCode == JSTYPE_JAVA_ARRAY)
+                       ? CONVERSION_NONE : 2 + getSizeRank(to);
+            }
+            break;
+
+        case JSTYPE_OBJECT:
+            // Other objects takes #1-#3 spots
+            if (to == fromObj.getClass()) {
+                // No conversion required
+                return 1;
+            }
+            if (to.isArray()) {
+                if (fromObj instanceof NativeArray) {
+                    // This is a native array conversion to a java array
+                    // Array conversions are all equal, and preferable to object
+                    // and string conversion, per LC3.
+                    return 1;
+                }
+            }
+            else if (to == ScriptRuntime.ObjectClass) {
+                return 2;
+            }
+            else if (to == ScriptRuntime.StringClass) {
+                return 3;
+            }
+            else if (to == ScriptRuntime.DateClass) {
+                if (fromObj instanceof NativeDate) {
+                    // This is a native date to java date conversion
+                    return 1;
+                }
+            }
+            else if (to.isInterface()) {
+                if (fromObj instanceof Function) {
+                    // See comments in coerceType
+                    if (to.getMethods().length == 1) {
+                        return 1;
+                    }
+                }
+                return 11;
+            }
+            else if (to.isPrimitive() && to != Boolean.TYPE) {
+                return 3 + getSizeRank(to);
+            }
+            break;
+        }
+
+        return CONVERSION_NONE;
+    }
+
+    static int getSizeRank(Class aType) {
+        if (aType == Double.TYPE) {
+            return 1;
+        }
+        else if (aType == Float.TYPE) {
+            return 2;
+        }
+        else if (aType == Long.TYPE) {
+            return 3;
+        }
+        else if (aType == Integer.TYPE) {
+            return 4;
+        }
+        else if (aType == Short.TYPE) {
+            return 5;
+        }
+        else if (aType == Character.TYPE) {
+            return 6;
+        }
+        else if (aType == Byte.TYPE) {
+            return 7;
+        }
+        else if (aType == Boolean.TYPE) {
+            return CONVERSION_NONE;
+        }
+        else {
+            return 8;
+        }
+    }
+
+    private static int getJSTypeCode(Object value) {
+        if (value == null) {
+            return JSTYPE_NULL;
+        }
+        else if (value == Undefined.instance) {
+            return JSTYPE_UNDEFINED;
+        }
+        else if (value instanceof String) {
+            return JSTYPE_STRING;
+        }
+        else if (value instanceof Number) {
+            return JSTYPE_NUMBER;
+        }
+        else if (value instanceof Boolean) {
+            return JSTYPE_BOOLEAN;
+        }
+        else if (value instanceof Scriptable) {
+            if (value instanceof NativeJavaClass) {
+                return JSTYPE_JAVA_CLASS;
+            }
+            else if (value instanceof NativeJavaArray) {
+                return JSTYPE_JAVA_ARRAY;
+            }
+            else if (value instanceof Wrapper) {
+                return JSTYPE_JAVA_OBJECT;
+            }
+            else {
+                return JSTYPE_OBJECT;
+            }
+        }
+        else if (value instanceof Class) {
+            return JSTYPE_JAVA_CLASS;
+        }
+        else {
+            Class valueClass = value.getClass();
+            if (valueClass.isArray()) {
+                return JSTYPE_JAVA_ARRAY;
+            }
+            else {
+                return JSTYPE_JAVA_OBJECT;
+            }
+        }
+    }
+
+    /**
+     * Not intended for public use. Callers should use the
+     * public API Context.toType.
+     * @deprecated as of 1.5 Release 4
+     * @see org.mozilla.javascript.Context#jsToJava(Object, Class)
+     */
+    public static Object coerceType(Class type, Object value)
+    {
+        return coerceTypeImpl(type, value);
+    }
+
+    /**
+     * Type-munging for field setting and method invocation.
+     * Conforms to LC3 specification
+     */
+    static Object coerceTypeImpl(Class type, Object value)
+    {
+        if (value != null && value.getClass() == type) {
+            return value;
+        }
+
+        switch (getJSTypeCode(value)) {
+
+        case JSTYPE_NULL:
+            // raise error if type.isPrimitive()
+            if (type.isPrimitive()) {
+                reportConversionError(value, type);
+            }
+            return null;
+
+        case JSTYPE_UNDEFINED:
+            if (type == ScriptRuntime.StringClass ||
+                type == ScriptRuntime.ObjectClass) {
+                return "undefined";
+            }
+            else {
+                reportConversionError("undefined", type);
+            }
+            break;
+
+        case JSTYPE_BOOLEAN:
+            // Under LC3, only JS Booleans can be coerced into a Boolean value
+            if (type == Boolean.TYPE ||
+                type == ScriptRuntime.BooleanClass ||
+                type == ScriptRuntime.ObjectClass) {
+                return value;
+            }
+            else if (type == ScriptRuntime.StringClass) {
+                return value.toString();
+            }
+            else {
+                reportConversionError(value, type);
+            }
+            break;
+
+        case JSTYPE_NUMBER:
+            if (type == ScriptRuntime.StringClass) {
+                return ScriptRuntime.toString(value);
+            }
+            else if (type == ScriptRuntime.ObjectClass) {
+                return coerceToNumber(Double.TYPE, value);
+            }
+            else if ((type.isPrimitive() && type != Boolean.TYPE) ||
+                     ScriptRuntime.NumberClass.isAssignableFrom(type)) {
+                return coerceToNumber(type, value);
+            }
+            else {
+                reportConversionError(value, type);
+            }
+            break;
+
+        case JSTYPE_STRING:
+            if (type == ScriptRuntime.StringClass || type.isInstance(value)) {
+                return value;
+            }
+            else if (type == Character.TYPE
+                     || type == ScriptRuntime.CharacterClass)
+            {
+                // Special case for converting a single char string to a
+                // character
+                // Placed here because it applies *only* to JS strings,
+                // not other JS objects converted to strings
+                if (((String)value).length() == 1) {
+                    return new Character(((String)value).charAt(0));
+                }
+                else {
+                    return coerceToNumber(type, value);
+                }
+            }
+            else if ((type.isPrimitive() && type != Boolean.TYPE)
+                     || ScriptRuntime.NumberClass.isAssignableFrom(type))
+            {
+                return coerceToNumber(type, value);
+            }
+            else {
+                reportConversionError(value, type);
+            }
+            break;
+
+        case JSTYPE_JAVA_CLASS:
+            if (value instanceof Wrapper) {
+                value = ((Wrapper)value).unwrap();
+            }
+
+            if (type == ScriptRuntime.ClassClass ||
+                type == ScriptRuntime.ObjectClass) {
+                return value;
+            }
+            else if (type == ScriptRuntime.StringClass) {
+                return value.toString();
+            }
+            else {
+                reportConversionError(value, type);
+            }
+            break;
+
+        case JSTYPE_JAVA_OBJECT:
+        case JSTYPE_JAVA_ARRAY:              
+            if (value instanceof Wrapper) {
+              value = ((Wrapper)value).unwrap();
+            }
+            if (type.isPrimitive()) {
+                if (type == Boolean.TYPE) {
+                    reportConversionError(value, type);
+                }
+                return coerceToNumber(type, value);
+            }
+            else { 
+              if (type == ScriptRuntime.StringClass) {
+                    return value.toString();
+                }
+                else {
+                    if (type.isInstance(value)) {
+                        return value;
+                    }
+                    else {
+                        reportConversionError(value, type);
+                    }
+                }
+            }
+            break;
+
+        case JSTYPE_OBJECT:
+            if (type == ScriptRuntime.StringClass) {
+                return ScriptRuntime.toString(value);
+            }
+            else if (type.isPrimitive()) {
+                if (type == Boolean.TYPE) {
+                    reportConversionError(value, type);
+                }
+                return coerceToNumber(type, value);
+            }
+            else if (type.isInstance(value)) {
+                return value;
+            }
+            else if (type == ScriptRuntime.DateClass
+                     && value instanceof NativeDate)
+            {
+                double time = ((NativeDate)value).getJSTimeValue();
+                // XXX: This will replace NaN by 0
+                return new Date((long)time);
+            }
+            else if (type.isArray() && value instanceof NativeArray) {
+                // Make a new java array, and coerce the JS array components
+                // to the target (component) type.
+                NativeArray array = (NativeArray) value;
+                long length = array.getLength();
+                Class arrayType = type.getComponentType();
+                Object Result = Array.newInstance(arrayType, (int)length);
+                for (int i = 0 ; i < length ; ++i) {
+                    try  {
+                        Array.set(Result, i, coerceType(arrayType,
+                                                        array.get(i, array)));
+                    }
+                    catch (EvaluatorException ee) {
+                        reportConversionError(value, type);
+                    }
+                }
+
+                return Result;
+            }
+            else if (value instanceof Wrapper) {
+                value = ((Wrapper)value).unwrap();
+                if (type.isInstance(value))
+                    return value;
+                reportConversionError(value, type);
+            }
+            else if (type.isInterface() && value instanceof Callable) {
+                // Try to use function as implementation of Java interface.
+                //
+                // XXX: Curently only instances of ScriptableObject are
+                // supported since the resulting interface proxies should
+                // be reused next time conversion is made and generic
+                // Callable has no storage for it. Weak references can
+                // address it but for now use this restriction.
+                if (value instanceof ScriptableObject) {
+                    ScriptableObject so = (ScriptableObject)value;
+                    Object key = Kit.makeHashKeyFromPair(
+                        COERCED_INTERFACE_KEY, type);
+                    Object old = so.getAssociatedValue(key);
+                    if (old != null) {
+                        // Function was already wrapped
+                        return old;
+                    }
+                    Context cx = Context.getContext();
+                    Object glue
+                        = InterfaceAdapter.create(cx, type, (Callable)value);
+                    // Store for later retrival
+                    glue = so.associateValue(key, glue);
+                    return glue;
+                }
+                reportConversionError(value, type);
+            } else {
+                reportConversionError(value, type);
+            }
+            break;
+        }
+
+        return value;
+    }
+
+    private static Object coerceToNumber(Class type, Object value)
+    {
+        Class valueClass = value.getClass();
+
+        // Character
+        if (type == Character.TYPE || type == ScriptRuntime.CharacterClass) {
+            if (valueClass == ScriptRuntime.CharacterClass) {
+                return value;
+            }
+            return new Character((char)toInteger(value,
+                                                 ScriptRuntime.CharacterClass,
+                                                 Character.MIN_VALUE,
+                                                 Character.MAX_VALUE));
+        }
+
+        // Double, Float
+        if (type == ScriptRuntime.ObjectClass ||
+            type == ScriptRuntime.DoubleClass || type == Double.TYPE) {
+            return valueClass == ScriptRuntime.DoubleClass
+                ? value
+                : new Double(toDouble(value));
+        }
+
+        if (type == ScriptRuntime.FloatClass || type == Float.TYPE) {
+            if (valueClass == ScriptRuntime.FloatClass) {
+                return value;
+            }
+            else {
+                double number = toDouble(value);
+                if (Double.isInfinite(number) || Double.isNaN(number)
+                    || number == 0.0) {
+                    return new Float((float)number);
+                }
+                else {
+                    double absNumber = Math.abs(number);
+                    if (absNumber < Float.MIN_VALUE) {
+                        return new Float((number > 0.0) ? +0.0 : -0.0);
+                    }
+                    else if (absNumber > Float.MAX_VALUE) {
+                        return new Float((number > 0.0) ?
+                                         Float.POSITIVE_INFINITY :
+                                         Float.NEGATIVE_INFINITY);
+                    }
+                    else {
+                        return new Float((float)number);
+                    }
+                }
+            }
+        }
+
+        // Integer, Long, Short, Byte
+        if (type == ScriptRuntime.IntegerClass || type == Integer.TYPE) {
+            if (valueClass == ScriptRuntime.IntegerClass) {
+                return value;
+            }
+            else {
+                return new Integer((int)toInteger(value,
+                                                  ScriptRuntime.IntegerClass,
+                                                  Integer.MIN_VALUE,
+                                                  Integer.MAX_VALUE));
+            }
+        }
+
+        if (type == ScriptRuntime.LongClass || type == Long.TYPE) {
+            if (valueClass == ScriptRuntime.LongClass) {
+                return value;
+            } else {
+                /* Long values cannot be expressed exactly in doubles.
+                 * We thus use the largest and smallest double value that
+                 * has a value expressible as a long value. We build these
+                 * numerical values from their hexidecimal representations
+                 * to avoid any problems caused by attempting to parse a
+                 * decimal representation.
+                 */
+                final double max = Double.longBitsToDouble(0x43dfffffffffffffL);
+                final double min = Double.longBitsToDouble(0xc3e0000000000000L);
+                return new Long(toInteger(value,
+                                          ScriptRuntime.LongClass,
+                                          min,
+                                          max));
+            }
+        }
+
+        if (type == ScriptRuntime.ShortClass || type == Short.TYPE) {
+            if (valueClass == ScriptRuntime.ShortClass) {
+                return value;
+            }
+            else {
+                return new Short((short)toInteger(value,
+                                                  ScriptRuntime.ShortClass,
+                                                  Short.MIN_VALUE,
+                                                  Short.MAX_VALUE));
+            }
+        }
+
+        if (type == ScriptRuntime.ByteClass || type == Byte.TYPE) {
+            if (valueClass == ScriptRuntime.ByteClass) {
+                return value;
+            }
+            else {
+                return new Byte((byte)toInteger(value,
+                                                ScriptRuntime.ByteClass,
+                                                Byte.MIN_VALUE,
+                                                Byte.MAX_VALUE));
+            }
+        }
+
+        return new Double(toDouble(value));
+    }
+
+
+    private static double toDouble(Object value)
+    {
+        if (value instanceof Number) {
+            return ((Number)value).doubleValue();
+        }
+        else if (value instanceof String) {
+            return ScriptRuntime.toNumber((String)value);
+        }
+        else if (value instanceof Scriptable) {
+            if (value instanceof Wrapper) {
+                // XXX: optimize tail-recursion?
+                return toDouble(((Wrapper)value).unwrap());
+            }
+            else {
+                return ScriptRuntime.toNumber(value);
+            }
+        }
+        else {
+            Method meth;
+            try {
+                meth = value.getClass().getMethod("doubleValue", 
+                		                          (Class [])null);
+            }
+            catch (NoSuchMethodException e) {
+                meth = null;
+            }
+            catch (SecurityException e) {
+                meth = null;
+            }
+            if (meth != null) {
+                try {
+                    return ((Number)meth.invoke(value, 
+                    		                    (Object [])null)).doubleValue();
+                }
+                catch (IllegalAccessException e) {
+                    // XXX: ignore, or error message?
+                    reportConversionError(value, Double.TYPE);
+                }
+                catch (InvocationTargetException e) {
+                    // XXX: ignore, or error message?
+                    reportConversionError(value, Double.TYPE);
+                }
+            }
+            return ScriptRuntime.toNumber(value.toString());
+        }
+    }
+
+    private static long toInteger(Object value, Class type,
+                                  double min, double max)
+    {
+        double d = toDouble(value);
+
+        if (Double.isInfinite(d) || Double.isNaN(d)) {
+            // Convert to string first, for more readable message
+            reportConversionError(ScriptRuntime.toString(value), type);
+        }
+
+        if (d > 0.0) {
+            d = Math.floor(d);
+        }
+        else {
+            d = Math.ceil(d);
+        }
+
+        if (d < min || d > max) {
+            // Convert to string first, for more readable message
+            reportConversionError(ScriptRuntime.toString(value), type);
+        }
+        return (long)d;
+    }
+
+    static void reportConversionError(Object value, Class type)
+    {
+        // It uses String.valueOf(value), not value.toString() since
+        // value can be null, bug 282447.
+        throw Context.reportRuntimeError2(
+            "msg.conversion.not.allowed",
+            String.valueOf(value),
+            JavaMembers.javaSignature(type));
+    }
+
+    private void writeObject(ObjectOutputStream out)
+        throws IOException
+    {
+        out.defaultWriteObject();
+
+        out.writeBoolean(isAdapter);
+        if (isAdapter) {
+            if (adapter_writeAdapterObject == null) {
+                throw new IOException();
+            }
+            Object[] args = { javaObject, out };
+            try {
+                adapter_writeAdapterObject.invoke(null, args);
+            } catch (Exception ex) {
+                throw new IOException();
+            }
+        } else {
+            out.writeObject(javaObject);
+        }
+
+        if (staticType != null) {
+            out.writeObject(staticType.getClass().getName());
+        } else {
+            out.writeObject(null);
+        }
+    }
+
+    private void readObject(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        in.defaultReadObject();
+
+        isAdapter = in.readBoolean();
+        if (isAdapter) {
+            if (adapter_readAdapterObject == null)
+                throw new ClassNotFoundException();
+            Object[] args = { this, in };
+            try {
+                javaObject = adapter_readAdapterObject.invoke(null, args);
+            } catch (Exception ex) {
+                throw new IOException();
+            }
+        } else {
+            javaObject = in.readObject();
+        }
+
+        String className = (String)in.readObject();
+        if (className != null) {
+            staticType = Class.forName(className);
+        } else {
+            staticType = null;
+        }
+
+        initMembers();
+    }
+
+    /**
+     * The prototype of this object.
+     */
+    protected Scriptable prototype;
+
+    /**
+     * The parent scope of this object.
+     */
+    protected Scriptable parent;
+
+    protected transient Object javaObject;
+
+    protected transient Class staticType;
+    protected transient JavaMembers members;
+    private transient Hashtable fieldAndMethods;
+    private transient boolean isAdapter;
+
+    private static final Object COERCED_INTERFACE_KEY = new Object();
+    private static Method adapter_writeAdapterObject;
+    private static Method adapter_readAdapterObject;
+
+    static {
+        // Reflection in java is verbose
+        Class[] sig2 = new Class[2];
+        Class cl = Kit.classOrNull("org.mozilla.javascript.JavaAdapter");
+        if (cl != null) {
+            try {
+                sig2[0] = ScriptRuntime.ObjectClass;
+                sig2[1] = Kit.classOrNull("java.io.ObjectOutputStream");
+                adapter_writeAdapterObject = cl.getMethod("writeAdapterObject",
+                                                          sig2);
+
+                sig2[0] = ScriptRuntime.ScriptableClass;
+                sig2[1] = Kit.classOrNull("java.io.ObjectInputStream");
+                adapter_readAdapterObject = cl.getMethod("readAdapterObject",
+                                                         sig2);
+
+            } catch (Exception ex) {
+                adapter_writeAdapterObject = null;
+                adapter_readAdapterObject = null;
+            }
+        }
+    }
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaPackage.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaPackage.java
new file mode 100644
index 0000000..71f09f7
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaPackage.java
@@ -0,0 +1,199 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Frank Mitchell
+ *   Mike Shaver
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class reflects Java packages into the JavaScript environment.  We
+ * lazily reflect classes and subpackages, and use a caching/sharing
+ * system to ensure that members reflected into one JavaPackage appear
+ * in all other references to the same package (as with Packages.java.lang
+ * and java.lang).
+ *
+ * @author Mike Shaver
+ * @see NativeJavaArray
+ * @see NativeJavaObject
+ * @see NativeJavaClass
+ */
+
+public class NativeJavaPackage extends ScriptableObject
+{
+    static final long serialVersionUID = 7445054382212031523L;
+
+    NativeJavaPackage(boolean internalUsage,
+                      String packageName, ClassLoader classLoader)
+    {
+        this.packageName = packageName;
+        this.classLoader = classLoader;
+    }
+
+    /**
+     * @deprecated NativeJavaPackage is an internal class, do not use
+     * it directly.
+     */
+    public NativeJavaPackage(String packageName, ClassLoader classLoader) {
+        this(false, packageName, classLoader);
+    }
+
+    /**
+     * @deprecated NativeJavaPackage is an internal class, do not use
+     * it directly.
+     */
+    public NativeJavaPackage(String packageName) {
+        this(false, packageName,
+             Context.getCurrentContext().getApplicationClassLoader());
+    }
+
+    public String getClassName() {
+        return "JavaPackage";
+    }
+
+    public boolean has(String id, Scriptable start) {
+        return true;
+    }
+
+    public boolean has(int index, Scriptable start) {
+        return false;
+    }
+
+    public void put(String id, Scriptable start, Object value) {
+        // Can't add properties to Java packages.  Sorry.
+    }
+
+    public void put(int index, Scriptable start, Object value) {
+        throw Context.reportRuntimeError0("msg.pkg.int");
+    }
+
+    public Object get(String id, Scriptable start) {
+        return getPkgProperty(id, start, true);
+    }
+
+    public Object get(int index, Scriptable start) {
+        return NOT_FOUND;
+    }
+
+    // set up a name which is known to be a package so we don't
+    // need to look for a class by that name
+    void forcePackage(String name, Scriptable scope)
+    {
+        NativeJavaPackage pkg;
+        int end = name.indexOf('.');
+        if (end == -1) {
+            end = name.length();
+        }
+
+        String id = name.substring(0, end);
+        Object cached = super.get(id, this);
+        if (cached != null && cached instanceof NativeJavaPackage) {
+            pkg = (NativeJavaPackage) cached;
+        } else {
+            String newPackage = packageName.length() == 0
+                                ? id
+                                : packageName + "." + id;
+            pkg = new NativeJavaPackage(true, newPackage, classLoader);
+            ScriptRuntime.setObjectProtoAndParent(pkg, scope);
+            super.put(id, this, pkg);
+        }
+        if (end < name.length()) {
+            pkg.forcePackage(name.substring(end+1), scope);
+        }
+    }
+
+    synchronized Object getPkgProperty(String name, Scriptable start,
+                                       boolean createPkg)
+    {
+        Object cached = super.get(name, start);
+        if (cached != NOT_FOUND)
+            return cached;
+
+        String className = (packageName.length() == 0)
+                               ? name : packageName + '.' + name;
+        Context cx = Context.getContext();
+        ClassShutter shutter = cx.getClassShutter();
+        Scriptable newValue = null;
+        if (shutter == null || shutter.visibleToScripts(className)) {
+            Class cl = null;
+            if (classLoader != null) {
+                cl = Kit.classOrNull(classLoader, className);
+            } else {
+                cl = Kit.classOrNull(className);
+            }
+            if (cl != null) {
+                newValue = new NativeJavaClass(getTopLevelScope(this), cl);
+                newValue.setPrototype(getPrototype());
+            }
+        }
+        if (newValue == null && createPkg) {
+            NativeJavaPackage pkg;
+            pkg = new NativeJavaPackage(true, className, classLoader);
+            ScriptRuntime.setObjectProtoAndParent(pkg, getParentScope());
+            newValue = pkg;
+        }
+        if (newValue != null) {
+            // Make it available for fast lookup and sharing of
+            // lazily-reflected constructors and static members.
+            super.put(name, start, newValue);
+        }
+        return newValue;
+    }
+
+    public Object getDefaultValue(Class ignored) {
+        return toString();
+    }
+
+    public String toString() {
+        return "[JavaPackage " + packageName + "]";
+    }
+
+    public boolean equals(Object obj) {
+        if(obj instanceof NativeJavaPackage) {
+            NativeJavaPackage njp = (NativeJavaPackage)obj;
+            return packageName.equals(njp.packageName) && classLoader == njp.classLoader;
+        }
+        return false;
+    }
+    
+    public int hashCode() {
+        return packageName.hashCode() ^ (classLoader == null ? 0 : classLoader.hashCode());
+    }
+
+    private String packageName;
+    private ClassLoader classLoader;
+}
\ No newline at end of file
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaTopPackage.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaTopPackage.java
new file mode 100644
index 0000000..b5c9b49
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeJavaTopPackage.java
@@ -0,0 +1,187 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Frank Mitchell
+ *   Mike Shaver
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class reflects Java packages into the JavaScript environment.  We
+ * lazily reflect classes and subpackages, and use a caching/sharing
+ * system to ensure that members reflected into one JavaPackage appear
+ * in all other references to the same package (as with Packages.java.lang
+ * and java.lang).
+ *
+ * @author Mike Shaver
+ * @see NativeJavaArray
+ * @see NativeJavaObject
+ * @see NativeJavaClass
+ */
+
+public class NativeJavaTopPackage
+    extends NativeJavaPackage implements Function, IdFunctionCall
+{
+    static final long serialVersionUID = -1455787259477709999L;
+
+    // we know these are packages so we can skip the class check
+    // note that this is ok even if the package isn't present.
+    private static final String commonPackages = ""
+                                                 +"java.lang;"
+                                                 +"java.lang.reflect;"
+                                                 +"java.io;"
+                                                 +"java.math;"
+                                                 +"java.net;"
+                                                 +"java.util;"
+                                                 +"java.util.zip;"
+                                                 +"java.text;"
+                                                 +"java.text.resources;"
+                                                 +"java.applet;"
+                                                 +"javax.swing;"
+                                                 ;
+
+    NativeJavaTopPackage(ClassLoader loader)
+    {
+        super(true, "", loader);
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        return construct(cx, scope, args);
+    }
+
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        ClassLoader loader = null;
+        if (args.length != 0) {
+            Object arg = args[0];
+            if (arg instanceof Wrapper) {
+                arg = ((Wrapper)arg).unwrap();
+            }
+            if (arg instanceof ClassLoader) {
+                loader = (ClassLoader)arg;
+            }
+        }
+        if (loader == null) {
+            Context.reportRuntimeError0("msg.not.classloader");
+            return null;
+        }
+        return new NativeJavaPackage(true, "", loader);
+    }
+
+    public static void init(Context cx, Scriptable scope, boolean sealed)
+    {
+        ClassLoader loader = cx.getApplicationClassLoader();
+        final NativeJavaTopPackage top = new NativeJavaTopPackage(loader);
+        top.setPrototype(getObjectPrototype(scope));
+        top.setParentScope(scope);
+
+        String[] names = Kit.semicolonSplit(commonPackages);
+        for (int i = 0; i != names.length; ++i) {
+            top.forcePackage(names[i], scope);
+        }
+
+        // getClass implementation
+        IdFunctionObject getClass = new IdFunctionObject(top, FTAG, Id_getClass,
+                                                         "getClass", 1, scope);
+
+        // We want to get a real alias, and not a distinct JavaPackage
+        // with the same packageName, so that we share classes and top
+        // that are underneath.
+        String[] topNames = { "java", "javax", "org", "com", "edu", "net" };
+        NativeJavaPackage[] topPackages = new NativeJavaPackage[topNames.length];
+        for (int i=0; i < topNames.length; i++) {
+            topPackages[i] = (NativeJavaPackage)top.get(topNames[i], top);
+        }
+
+        // It's safe to downcast here since initStandardObjects takes
+        // a ScriptableObject.
+        ScriptableObject global = (ScriptableObject) scope;
+
+        if (sealed) {
+            getClass.sealObject();
+        }
+        getClass.exportAsScopeProperty();
+        global.defineProperty("Packages", top, ScriptableObject.DONTENUM);
+        for (int i=0; i < topNames.length; i++) {
+            global.defineProperty(topNames[i], topPackages[i],
+                                  ScriptableObject.DONTENUM);
+        }
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (f.hasTag(FTAG)) {
+            if (f.methodId() == Id_getClass) {
+                return js_getClass(cx, scope, args);
+            }
+        }
+        throw f.unknown();
+    }
+
+    private Scriptable js_getClass(Context cx, Scriptable scope, Object[] args)
+    {
+        if (args.length > 0  && args[0] instanceof Wrapper) {
+            Scriptable result = this;
+            Class cl = ((Wrapper) args[0]).unwrap().getClass();
+            // Evaluate the class name by getting successive properties of
+            // the string to find the appropriate NativeJavaClass object
+            String name = cl.getName();
+            int offset = 0;
+            for (;;) {
+                int index = name.indexOf('.', offset);
+                String propName = index == -1
+                                  ? name.substring(offset)
+                                  : name.substring(offset, index);
+                Object prop = result.get(propName, result);
+                if (!(prop instanceof Scriptable))
+                    break;  // fall through to error
+                result = (Scriptable) prop;
+                if (index == -1)
+                    return result;
+                offset = index+1;
+            }
+        }
+        throw Context.reportRuntimeError0("msg.not.java.obj");
+    }
+
+    private static final Object FTAG = new Object();
+    private static final int Id_getClass = 1;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeMath.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeMath.java
new file mode 100644
index 0000000..36b66b4
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeMath.java
@@ -0,0 +1,399 @@
+/* -*- Mode: java; tab-width: 4; indent-tabs-mode: 1; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements the Math native object.
+ * See ECMA 15.8.
+ * @author Norris Boyd
+ */
+
+final class NativeMath extends IdScriptableObject
+{
+    static final long serialVersionUID = -8838847185801131569L;
+
+    private static final Object MATH_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeMath obj = new NativeMath();
+        obj.activatePrototypeMap(MAX_ID);
+        obj.setPrototype(getObjectPrototype(scope));
+        obj.setParentScope(scope);
+        if (sealed) { obj.sealObject(); }
+        ScriptableObject.defineProperty(scope, "Math", obj,
+                                        ScriptableObject.DONTENUM);
+    }
+
+    private NativeMath()
+    {
+    }
+
+    public String getClassName() { return "Math"; }
+
+    protected void initPrototypeId(int id)
+    {
+        if (id <= LAST_METHOD_ID) {
+            String name;
+            int arity;
+            switch (id) {
+              case Id_toSource: arity = 0; name = "toSource"; break;
+              case Id_abs:      arity = 1; name = "abs";      break;
+              case Id_acos:     arity = 1; name = "acos";     break;
+              case Id_asin:     arity = 1; name = "asin";     break;
+              case Id_atan:     arity = 1; name = "atan";     break;
+              case Id_atan2:    arity = 2; name = "atan2";    break;
+              case Id_ceil:     arity = 1; name = "ceil";     break;
+              case Id_cos:      arity = 1; name = "cos";      break;
+              case Id_exp:      arity = 1; name = "exp";      break;
+              case Id_floor:    arity = 1; name = "floor";    break;
+              case Id_log:      arity = 1; name = "log";      break;
+              case Id_max:      arity = 2; name = "max";      break;
+              case Id_min:      arity = 2; name = "min";      break;
+              case Id_pow:      arity = 2; name = "pow";      break;
+              case Id_random:   arity = 0; name = "random";   break;
+              case Id_round:    arity = 1; name = "round";    break;
+              case Id_sin:      arity = 1; name = "sin";      break;
+              case Id_sqrt:     arity = 1; name = "sqrt";     break;
+              case Id_tan:      arity = 1; name = "tan";      break;
+              default: throw new IllegalStateException(String.valueOf(id));
+            }
+            initPrototypeMethod(MATH_TAG, id, name, arity);
+        } else {
+            String name;
+            double x;
+            switch (id) {
+              case Id_E:       x = Math.E;             name = "E";       break;
+              case Id_PI:      x = Math.PI;            name = "PI";      break;
+              case Id_LN10:    x = 2.302585092994046;  name = "LN10";    break;
+              case Id_LN2:     x = 0.6931471805599453; name = "LN2";     break;
+              case Id_LOG2E:   x = 1.4426950408889634; name = "LOG2E";   break;
+              case Id_LOG10E:  x = 0.4342944819032518; name = "LOG10E";  break;
+              case Id_SQRT1_2: x = 0.7071067811865476; name = "SQRT1_2"; break;
+              case Id_SQRT2:   x = 1.4142135623730951; name = "SQRT2";   break;
+              default: throw new IllegalStateException(String.valueOf(id));
+            }
+            initPrototypeValue(id, name, ScriptRuntime.wrapNumber(x),
+                               DONTENUM | READONLY | PERMANENT);
+        }
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(MATH_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        double x;
+        int methodId = f.methodId();
+        switch (methodId) {
+            case Id_toSource:
+                return "Math";
+
+            case Id_abs:
+                x = ScriptRuntime.toNumber(args, 0);
+                // abs(-0.0) should be 0.0, but -0.0 < 0.0 == false
+                x = (x == 0.0) ? 0.0 : (x < 0.0) ? -x : x;
+                break;
+
+            case Id_acos:
+            case Id_asin:
+                x = ScriptRuntime.toNumber(args, 0);
+                if (x == x && -1.0 <= x && x <= 1.0) {
+                    x = (methodId == Id_acos) ? Math.acos(x) : Math.asin(x);
+                } else {
+                    x = Double.NaN;
+                }
+                break;
+
+            case Id_atan:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = Math.atan(x);
+                break;
+
+            case Id_atan2:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = Math.atan2(x, ScriptRuntime.toNumber(args, 1));
+                break;
+
+            case Id_ceil:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = Math.ceil(x);
+                break;
+
+            case Id_cos:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = (x == Double.POSITIVE_INFINITY
+                     || x == Double.NEGATIVE_INFINITY)
+                    ? Double.NaN : Math.cos(x);
+                break;
+
+            case Id_exp:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = (x == Double.POSITIVE_INFINITY) ? x
+                    : (x == Double.NEGATIVE_INFINITY) ? 0.0
+                    : Math.exp(x);
+                break;
+
+            case Id_floor:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = Math.floor(x);
+                break;
+
+            case Id_log:
+                x = ScriptRuntime.toNumber(args, 0);
+                // Java's log(<0) = -Infinity; we need NaN
+                x = (x < 0) ? Double.NaN : Math.log(x);
+                break;
+
+            case Id_max:
+            case Id_min:
+                x = (methodId == Id_max)
+                    ? Double.NEGATIVE_INFINITY : Double.POSITIVE_INFINITY;
+                for (int i = 0; i != args.length; ++i) {
+                    double d = ScriptRuntime.toNumber(args[i]);
+                    if (d != d) {
+                        x = d; // NaN
+                        break;
+                    }
+                    if (methodId == Id_max) {
+                        // if (x < d) x = d; does not work due to -0.0 >= +0.0
+                        x = Math.max(x, d);
+                    } else {
+                        x = Math.min(x, d);
+                    }
+                }
+                break;
+
+            case Id_pow:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = js_pow(x, ScriptRuntime.toNumber(args, 1));
+                break;
+
+            case Id_random:
+                x = Math.random();
+                break;
+
+            case Id_round:
+                x = ScriptRuntime.toNumber(args, 0);
+                if (x == x && x != Double.POSITIVE_INFINITY
+                    && x != Double.NEGATIVE_INFINITY)
+                {
+                    // Round only finite x
+                    long l = Math.round(x);
+                    if (l != 0) {
+                        x = l;
+                    } else {
+                        // We must propagate the sign of d into the result
+                        if (x < 0.0) {
+                            x = ScriptRuntime.negativeZero;
+                        } else if (x != 0.0) {
+                            x = 0.0;
+                        }
+                    }
+                }
+                break;
+
+            case Id_sin:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = (x == Double.POSITIVE_INFINITY
+                     || x == Double.NEGATIVE_INFINITY)
+                    ? Double.NaN : Math.sin(x);
+                break;
+
+            case Id_sqrt:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = Math.sqrt(x);
+                break;
+
+            case Id_tan:
+                x = ScriptRuntime.toNumber(args, 0);
+                x = Math.tan(x);
+                break;
+
+            default: throw new IllegalStateException(String.valueOf(methodId));
+        }
+        return ScriptRuntime.wrapNumber(x);
+    }
+
+    // See Ecma 15.8.2.13
+    private double js_pow(double x, double y) {
+        double result;
+        if (y != y) {
+            // y is NaN, result is always NaN
+            result = y;
+        } else if (y == 0) {
+            // Java's pow(NaN, 0) = NaN; we need 1
+            result = 1.0;
+        } else if (x == 0) {
+            // Many dirrerences from Java's Math.pow
+            if (1 / x > 0) {
+                result = (y > 0) ? 0 : Double.POSITIVE_INFINITY;
+            } else {
+                // x is -0, need to check if y is an odd integer
+                long y_long = (long)y;
+                if (y_long == y && (y_long & 0x1) != 0) {
+                    result = (y > 0) ? -0.0 : Double.NEGATIVE_INFINITY;
+                } else {
+                    result = (y > 0) ? 0.0 : Double.POSITIVE_INFINITY;
+                }
+            }
+        } else {
+            result = Math.pow(x, y);
+            if (result != result) {
+                // Check for broken Java implementations that gives NaN
+                // when they should return something else
+                if (y == Double.POSITIVE_INFINITY) {
+                    if (x < -1.0 || 1.0 < x) {
+                        result = Double.POSITIVE_INFINITY;
+                    } else if (-1.0 < x && x < 1.0) {
+                        result = 0;
+                    }
+                } else if (y == Double.NEGATIVE_INFINITY) {
+                    if (x < -1.0 || 1.0 < x) {
+                        result = 0;
+                    } else if (-1.0 < x && x < 1.0) {
+                        result = Double.POSITIVE_INFINITY;
+                    }
+                } else if (x == Double.POSITIVE_INFINITY) {
+                    result = (y > 0) ? Double.POSITIVE_INFINITY : 0.0;
+                } else if (x == Double.NEGATIVE_INFINITY) {
+                    long y_long = (long)y;
+                    if (y_long == y && (y_long & 0x1) != 0) {
+                        // y is odd integer
+                        result = (y > 0) ? Double.NEGATIVE_INFINITY : -0.0;
+                    } else {
+                        result = (y > 0) ? Double.POSITIVE_INFINITY : 0.0;
+                    }
+                }
+            }
+        }
+        return result;
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2004-03-17 13:51:32 CET
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 1: if (s.charAt(0)=='E') {id=Id_E; break L0;} break L;
+            case 2: if (s.charAt(0)=='P' && s.charAt(1)=='I') {id=Id_PI; break L0;} break L;
+            case 3: switch (s.charAt(0)) {
+                case 'L': if (s.charAt(2)=='2' && s.charAt(1)=='N') {id=Id_LN2; break L0;} break L;
+                case 'a': if (s.charAt(2)=='s' && s.charAt(1)=='b') {id=Id_abs; break L0;} break L;
+                case 'c': if (s.charAt(2)=='s' && s.charAt(1)=='o') {id=Id_cos; break L0;} break L;
+                case 'e': if (s.charAt(2)=='p' && s.charAt(1)=='x') {id=Id_exp; break L0;} break L;
+                case 'l': if (s.charAt(2)=='g' && s.charAt(1)=='o') {id=Id_log; break L0;} break L;
+                case 'm': c=s.charAt(2);
+                    if (c=='n') { if (s.charAt(1)=='i') {id=Id_min; break L0;} }
+                    else if (c=='x') { if (s.charAt(1)=='a') {id=Id_max; break L0;} }
+                    break L;
+                case 'p': if (s.charAt(2)=='w' && s.charAt(1)=='o') {id=Id_pow; break L0;} break L;
+                case 's': if (s.charAt(2)=='n' && s.charAt(1)=='i') {id=Id_sin; break L0;} break L;
+                case 't': if (s.charAt(2)=='n' && s.charAt(1)=='a') {id=Id_tan; break L0;} break L;
+                } break L;
+            case 4: switch (s.charAt(1)) {
+                case 'N': X="LN10";id=Id_LN10; break L;
+                case 'c': X="acos";id=Id_acos; break L;
+                case 'e': X="ceil";id=Id_ceil; break L;
+                case 'q': X="sqrt";id=Id_sqrt; break L;
+                case 's': X="asin";id=Id_asin; break L;
+                case 't': X="atan";id=Id_atan; break L;
+                } break L;
+            case 5: switch (s.charAt(0)) {
+                case 'L': X="LOG2E";id=Id_LOG2E; break L;
+                case 'S': X="SQRT2";id=Id_SQRT2; break L;
+                case 'a': X="atan2";id=Id_atan2; break L;
+                case 'f': X="floor";id=Id_floor; break L;
+                case 'r': X="round";id=Id_round; break L;
+                } break L;
+            case 6: c=s.charAt(0);
+                if (c=='L') { X="LOG10E";id=Id_LOG10E; }
+                else if (c=='r') { X="random";id=Id_random; }
+                break L;
+            case 7: X="SQRT1_2";id=Id_SQRT1_2; break L;
+            case 8: X="toSource";id=Id_toSource; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_toSource     =  1,
+        Id_abs          =  2,
+        Id_acos         =  3,
+        Id_asin         =  4,
+        Id_atan         =  5,
+        Id_atan2        =  6,
+        Id_ceil         =  7,
+        Id_cos          =  8,
+        Id_exp          =  9,
+        Id_floor        = 10,
+        Id_log          = 11,
+        Id_max          = 12,
+        Id_min          = 13,
+        Id_pow          = 14,
+        Id_random       = 15,
+        Id_round        = 16,
+        Id_sin          = 17,
+        Id_sqrt         = 18,
+        Id_tan          = 19,
+
+        LAST_METHOD_ID  = 19;
+
+    private static final int
+        Id_E            = LAST_METHOD_ID + 1,
+        Id_PI           = LAST_METHOD_ID + 2,
+        Id_LN10         = LAST_METHOD_ID + 3,
+        Id_LN2          = LAST_METHOD_ID + 4,
+        Id_LOG2E        = LAST_METHOD_ID + 5,
+        Id_LOG10E       = LAST_METHOD_ID + 6,
+        Id_SQRT1_2      = LAST_METHOD_ID + 7,
+        Id_SQRT2        = LAST_METHOD_ID + 8,
+
+        MAX_ID = LAST_METHOD_ID + 8;
+
+// #/string_id_map#
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java
new file mode 100644
index 0000000..8fc9fb0
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeNumber.java
@@ -0,0 +1,244 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements the Number native object.
+ *
+ * See ECMA 15.7.
+ *
+ * @author Norris Boyd
+ */
+final class NativeNumber extends IdScriptableObject
+{
+    static final long serialVersionUID = 3504516769741512101L;
+
+    private static final Object NUMBER_TAG = new Object();
+
+    private static final int MAX_PRECISION = 100;
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeNumber obj = new NativeNumber(0.0);
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    private NativeNumber(double number)
+    {
+        doubleValue = number;
+    }
+
+    public String getClassName()
+    {
+        return "Number";
+    }
+
+    protected void fillConstructorProperties(IdFunctionObject ctor)
+    {
+        final int attr = ScriptableObject.DONTENUM |
+                         ScriptableObject.PERMANENT |
+                         ScriptableObject.READONLY;
+
+        ctor.defineProperty("NaN", ScriptRuntime.NaNobj, attr);
+        ctor.defineProperty("POSITIVE_INFINITY",
+                            ScriptRuntime.wrapNumber(Double.POSITIVE_INFINITY),
+                            attr);
+        ctor.defineProperty("NEGATIVE_INFINITY",
+                            ScriptRuntime.wrapNumber(Double.NEGATIVE_INFINITY),
+                            attr);
+        ctor.defineProperty("MAX_VALUE",
+                            ScriptRuntime.wrapNumber(Double.MAX_VALUE),
+                            attr);
+        ctor.defineProperty("MIN_VALUE",
+                            ScriptRuntime.wrapNumber(Double.MIN_VALUE),
+                            attr);
+
+        super.fillConstructorProperties(ctor);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor:    arity=1; s="constructor";    break;
+          case Id_toString:       arity=1; s="toString";       break;
+          case Id_toLocaleString: arity=1; s="toLocaleString"; break;
+          case Id_toSource:       arity=0; s="toSource";       break;
+          case Id_valueOf:        arity=0; s="valueOf";        break;
+          case Id_toFixed:        arity=1; s="toFixed";        break;
+          case Id_toExponential:  arity=1; s="toExponential";  break;
+          case Id_toPrecision:    arity=1; s="toPrecision";    break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(NUMBER_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(NUMBER_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        if (id == Id_constructor) {
+            double val = (args.length >= 1)
+                ? ScriptRuntime.toNumber(args[0]) : 0.0;
+            if (thisObj == null) {
+                // new Number(val) creates a new Number object.
+                return new NativeNumber(val);
+            }
+            // Number(val) converts val to a number value.
+            return ScriptRuntime.wrapNumber(val);
+        }
+
+        // The rest of Number.prototype methods require thisObj to be Number
+
+        if (!(thisObj instanceof NativeNumber))
+            throw incompatibleCallError(f);
+        double value = ((NativeNumber)thisObj).doubleValue;
+
+        switch (id) {
+
+          case Id_toString:
+          case Id_toLocaleString:
+            {
+                // toLocaleString is just an alias for toString for now
+                int base = (args.length == 0)
+                    ? 10 : ScriptRuntime.toInt32(args[0]);
+                return ScriptRuntime.numberToString(value, base);
+            }
+
+          case Id_toSource:
+            return "(new Number("+ScriptRuntime.toString(value)+"))";
+
+          case Id_valueOf:
+            return ScriptRuntime.wrapNumber(value);
+
+          case Id_toFixed:
+            return num_to(value, args, DToA.DTOSTR_FIXED,
+                          DToA.DTOSTR_FIXED, -20, 0);
+
+          case Id_toExponential:
+            return num_to(value, args, DToA.DTOSTR_STANDARD_EXPONENTIAL,
+                          DToA.DTOSTR_EXPONENTIAL, 0, 1);
+
+          case Id_toPrecision:
+            return num_to(value, args, DToA.DTOSTR_STANDARD,
+                          DToA.DTOSTR_PRECISION, 1, 0);
+
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+    }
+
+    public String toString() {
+        return ScriptRuntime.numberToString(doubleValue, 10);
+    }
+
+    private static String num_to(double val,
+                                 Object[] args,
+                                 int zeroArgMode, int oneArgMode,
+                                 int precisionMin, int precisionOffset)
+    {
+        int precision;
+        if (args.length == 0) {
+            precision = 0;
+            oneArgMode = zeroArgMode;
+        } else {
+            /* We allow a larger range of precision than
+               ECMA requires; this is permitted by ECMA. */
+            precision = ScriptRuntime.toInt32(args[0]);
+            if (precision < precisionMin || precision > MAX_PRECISION) {
+                String msg = ScriptRuntime.getMessage1(
+                    "msg.bad.precision", ScriptRuntime.toString(args[0]));
+                throw ScriptRuntime.constructError("RangeError", msg);
+            }
+        }
+        StringBuffer sb = new StringBuffer();
+        DToA.JS_dtostr(sb, oneArgMode, precision + precisionOffset, val);
+        return sb.toString();
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:15:50 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 7: c=s.charAt(0);
+                if (c=='t') { X="toFixed";id=Id_toFixed; }
+                else if (c=='v') { X="valueOf";id=Id_valueOf; }
+                break L;
+            case 8: c=s.charAt(3);
+                if (c=='o') { X="toSource";id=Id_toSource; }
+                else if (c=='t') { X="toString";id=Id_toString; }
+                break L;
+            case 11: c=s.charAt(0);
+                if (c=='c') { X="constructor";id=Id_constructor; }
+                else if (c=='t') { X="toPrecision";id=Id_toPrecision; }
+                break L;
+            case 13: X="toExponential";id=Id_toExponential; break L;
+            case 14: X="toLocaleString";id=Id_toLocaleString; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor           = 1,
+        Id_toString              = 2,
+        Id_toLocaleString        = 3,
+        Id_toSource              = 4,
+        Id_valueOf               = 5,
+        Id_toFixed               = 6,
+        Id_toExponential         = 7,
+        Id_toPrecision           = 8,
+        MAX_PROTOTYPE_ID         = 8;
+
+// #/string_id_map#
+
+    private double doubleValue;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java
new file mode 100644
index 0000000..19aff63
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeObject.java
@@ -0,0 +1,316 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements the Object native object.
+ * See ECMA 15.2.
+ * @author Norris Boyd
+ */
+public class NativeObject extends IdScriptableObject
+{
+    static final long serialVersionUID = -6345305608474346996L;
+
+    private static final Object OBJECT_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeObject obj = new NativeObject();
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    public String getClassName()
+    {
+        return "Object";
+    }
+
+    public String toString()
+    {
+        return ScriptRuntime.defaultObjectToString(this);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor:    arity=1; s="constructor";    break;
+          case Id_toString:       arity=0; s="toString";       break;
+          case Id_toLocaleString: arity=0; s="toLocaleString"; break;
+          case Id_valueOf:        arity=0; s="valueOf";        break;
+          case Id_hasOwnProperty: arity=1; s="hasOwnProperty"; break;
+          case Id_propertyIsEnumerable:
+            arity=1; s="propertyIsEnumerable"; break;
+          case Id_isPrototypeOf:  arity=1; s="isPrototypeOf";  break;
+          case Id_toSource:       arity=0; s="toSource";       break;
+          case Id___defineGetter__:
+            arity=2; s="__defineGetter__";     break;
+          case Id___defineSetter__:
+            arity=2; s="__defineSetter__";     break;
+          case Id___lookupGetter__:
+            arity=1; s="__lookupGetter__";     break;
+          case Id___lookupSetter__:
+            arity=1; s="__lookupSetter__";     break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(OBJECT_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(OBJECT_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case Id_constructor: {
+            if (thisObj != null) {
+                // BaseFunction.construct will set up parent, proto
+                return f.construct(cx, scope, args);
+            }
+            if (args.length == 0 || args[0] == null
+                || args[0] == Undefined.instance)
+            {
+                return new NativeObject();
+            }
+            return ScriptRuntime.toObject(cx, scope, args[0]);
+          }
+
+          case Id_toLocaleString: // For now just alias toString
+          case Id_toString: {
+            if (cx.hasFeature(Context.FEATURE_TO_STRING_AS_SOURCE)) {
+                String s = ScriptRuntime.defaultObjectToSource(cx, scope,
+                                                               thisObj, args);
+                int L = s.length();
+                if (L != 0 && s.charAt(0) == '(' && s.charAt(L - 1) == ')') {
+                    // Strip () that surrounds toSource
+                    s = s.substring(1, L - 1);
+                }
+                return s;
+            }
+            return ScriptRuntime.defaultObjectToString(thisObj);
+          }
+
+          case Id_valueOf:
+            return thisObj;
+
+          case Id_hasOwnProperty: {
+            boolean result;
+            if (args.length == 0) {
+                result = false;
+            } else {
+                String s = ScriptRuntime.toStringIdOrIndex(cx, args[0]);
+                if (s == null) {
+                    int index = ScriptRuntime.lastIndexResult(cx);
+                    result = thisObj.has(index, thisObj);
+                } else {
+                    result = thisObj.has(s, thisObj);
+                }
+            }
+            return ScriptRuntime.wrapBoolean(result);
+          }
+
+          case Id_propertyIsEnumerable: {
+            boolean result;
+            if (args.length == 0) {
+                result = false;
+            } else {
+                String s = ScriptRuntime.toStringIdOrIndex(cx, args[0]);
+                if (s == null) {
+                    int index = ScriptRuntime.lastIndexResult(cx);
+                    result = thisObj.has(index, thisObj);
+                    if (result && thisObj instanceof ScriptableObject) {
+                        ScriptableObject so = (ScriptableObject)thisObj;
+                        int attrs = so.getAttributes(index);
+                        result = ((attrs & ScriptableObject.DONTENUM) == 0);
+                    }
+                } else {
+                    result = thisObj.has(s, thisObj);
+                    if (result && thisObj instanceof ScriptableObject) {
+                        ScriptableObject so = (ScriptableObject)thisObj;
+                        int attrs = so.getAttributes(s);
+                        result = ((attrs & ScriptableObject.DONTENUM) == 0);
+                    }
+                }
+            }
+            return ScriptRuntime.wrapBoolean(result);
+          }
+
+          case Id_isPrototypeOf: {
+            boolean result = false;
+            if (args.length != 0 && args[0] instanceof Scriptable) {
+                Scriptable v = (Scriptable) args[0];
+                do {
+                    v = v.getPrototype();
+                    if (v == thisObj) {
+                        result = true;
+                        break;
+                    }
+                } while (v != null);
+            }
+            return ScriptRuntime.wrapBoolean(result);
+          }
+
+          case Id_toSource:
+            return ScriptRuntime.defaultObjectToSource(cx, scope, thisObj,
+                                                       args);
+          case Id___defineGetter__:
+          case Id___defineSetter__:
+            {
+                if (args.length < 2 || !(args[1] instanceof Callable)) {
+                    Object badArg = (args.length >= 2 ? args[1]
+                                     : Undefined.instance);
+                    throw ScriptRuntime.notFunctionError(badArg);
+                }
+                if (!(thisObj instanceof ScriptableObject)) {
+                    throw Context.reportRuntimeError2(
+                        "msg.extend.scriptable",
+                        thisObj.getClass().getName(),
+                        String.valueOf(args[0]));
+                }
+                ScriptableObject so = (ScriptableObject)thisObj;
+                String name = ScriptRuntime.toStringIdOrIndex(cx, args[0]);
+                int index = (name != null ? 0
+                             : ScriptRuntime.lastIndexResult(cx));
+                Callable getterOrSetter = (Callable)args[1];
+                boolean isSetter = (id == Id___defineSetter__);
+                so.setGetterOrSetter(name, index, getterOrSetter, isSetter);
+                if (so instanceof NativeArray)
+                    ((NativeArray)so).setDenseOnly(false);
+            }
+            return Undefined.instance;
+
+            case Id___lookupGetter__:
+            case Id___lookupSetter__:
+              {
+                  if (args.length < 1 ||
+                      !(thisObj instanceof ScriptableObject))
+                      return Undefined.instance;
+                  
+                  ScriptableObject so = (ScriptableObject)thisObj;
+                  String name = ScriptRuntime.toStringIdOrIndex(cx, args[0]);
+                  int index = (name != null ? 0
+                               : ScriptRuntime.lastIndexResult(cx));
+                  boolean isSetter = (id == Id___lookupSetter__);
+                  Object gs;
+                  for (;;) {
+                      gs = so.getGetterOrSetter(name, index, isSetter);
+                      if (gs != null)
+                          break;
+                      // If there is no getter or setter for the object itself,
+                      // how about the prototype?
+                      Scriptable v = so.getPrototype();
+                      if (v == null)
+                          break;
+                      if (v instanceof ScriptableObject)
+                          so = (ScriptableObject)v;
+                      else
+                          break;
+                  }
+                  if (gs != null)
+                      return gs;
+              }
+              return Undefined.instance;
+
+          default:
+            throw new IllegalArgumentException(String.valueOf(id));
+        }
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:15:55 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 7: X="valueOf";id=Id_valueOf; break L;
+            case 8: c=s.charAt(3);
+                if (c=='o') { X="toSource";id=Id_toSource; }
+                else if (c=='t') { X="toString";id=Id_toString; }
+                break L;
+            case 11: X="constructor";id=Id_constructor; break L;
+            case 13: X="isPrototypeOf";id=Id_isPrototypeOf; break L;
+            case 14: c=s.charAt(0);
+                if (c=='h') { X="hasOwnProperty";id=Id_hasOwnProperty; }
+                else if (c=='t') { X="toLocaleString";id=Id_toLocaleString; }
+                break L;
+            case 16: c=s.charAt(2);
+                if (c=='d') {
+                    c=s.charAt(8);
+                    if (c=='G') { X="__defineGetter__";id=Id___defineGetter__; }
+                    else if (c=='S') { X="__defineSetter__";id=Id___defineSetter__; }
+                }
+                else if (c=='l') {
+                    c=s.charAt(8);
+                    if (c=='G') { X="__lookupGetter__";id=Id___lookupGetter__; }
+                    else if (c=='S') { X="__lookupSetter__";id=Id___lookupSetter__; }
+                }
+                break L;
+            case 20: X="propertyIsEnumerable";id=Id_propertyIsEnumerable; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor           = 1,
+        Id_toString              = 2,
+        Id_toLocaleString        = 3,
+        Id_valueOf               = 4,
+        Id_hasOwnProperty        = 5,
+        Id_propertyIsEnumerable  = 6,
+        Id_isPrototypeOf         = 7,
+        Id_toSource              = 8,
+        Id___defineGetter__      = 9,
+        Id___defineSetter__      = 10,
+        Id___lookupGetter__      = 11,
+        Id___lookupSetter__      = 12,
+        MAX_PROTOTYPE_ID         = 12;
+
+// #/string_id_map#
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeScript.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeScript.java
new file mode 100644
index 0000000..7b5191e
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeScript.java
@@ -0,0 +1,221 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Roger Lawrence
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * The JavaScript Script object.
+ *
+ * Note that the C version of the engine uses XDR as the format used
+ * by freeze and thaw. Since this depends on the internal format of
+ * structures in the C runtime, we cannot duplicate it.
+ *
+ * Since we cannot replace 'this' as a result of the compile method,
+ * will forward requests to execute to the nonnull 'script' field.
+ *
+ * @since 1.3
+ * @author Norris Boyd
+ */
+
+class NativeScript extends BaseFunction
+{
+    static final long serialVersionUID = -6795101161980121700L;
+
+    private static final Object SCRIPT_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeScript obj = new NativeScript(null);
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    private NativeScript(Script script)
+    {
+        this.script = script;
+    }
+
+    /**
+     * Returns the name of this JavaScript class, "Script".
+     */
+    public String getClassName()
+    {
+        return "Script";
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        if (script != null) {
+            return script.exec(cx, scope);
+        }
+        return Undefined.instance;
+    }
+
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        throw Context.reportRuntimeError0("msg.script.is.not.constructor");
+    }
+
+    public int getLength()
+    {
+        return 0;
+    }
+
+    public int getArity()
+    {
+        return 0;
+    }
+
+    String decompile(int indent, int flags)
+    {
+        if (script instanceof NativeFunction) {
+            return ((NativeFunction)script).decompile(indent, flags);
+        }
+        return super.decompile(indent, flags);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor: arity=1; s="constructor"; break;
+          case Id_toString:    arity=0; s="toString";    break;
+          case Id_exec:        arity=0; s="exec";        break;
+          case Id_compile:     arity=1; s="compile";     break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(SCRIPT_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(SCRIPT_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case Id_constructor: {
+            String source = (args.length == 0)
+                            ? ""
+                            : ScriptRuntime.toString(args[0]);
+            Script script = compile(cx, source);
+            NativeScript nscript = new NativeScript(script);
+            ScriptRuntime.setObjectProtoAndParent(nscript, scope);
+            return nscript;
+          }
+
+          case Id_toString: {
+            NativeScript real = realThis(thisObj, f);
+            Script realScript = real.script;
+            if (realScript == null) { return ""; }
+            return cx.decompileScript(realScript, 0);
+          }
+
+          case Id_exec: {
+            throw Context.reportRuntimeError1(
+                "msg.cant.call.indirect", "exec");
+          }
+
+          case Id_compile: {
+            NativeScript real = realThis(thisObj, f);
+            String source = ScriptRuntime.toString(args, 0);
+            real.script = compile(cx, source);
+            return real;
+          }
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+    private static NativeScript realThis(Scriptable thisObj, IdFunctionObject f)
+    {
+        if (!(thisObj instanceof NativeScript))
+            throw incompatibleCallError(f);
+        return (NativeScript)thisObj;
+    }
+
+    private static Script compile(Context cx, String source)
+    {
+        int[] linep = { 0 };
+        String filename = Context.getSourcePositionFromStack(linep);
+        if (filename == null) {
+            filename = "<Script object>";
+            linep[0] = 1;
+        }
+        ErrorReporter reporter;
+        reporter = DefaultErrorReporter.forEval(cx.getErrorReporter());
+        return cx.compileString(source, null, reporter, filename,
+                                linep[0], null);
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:16:01 EDT
+        L0: { id = 0; String X = null;
+            L: switch (s.length()) {
+            case 4: X="exec";id=Id_exec; break L;
+            case 7: X="compile";id=Id_compile; break L;
+            case 8: X="toString";id=Id_toString; break L;
+            case 11: X="constructor";id=Id_constructor; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor    = 1,
+        Id_toString       = 2,
+        Id_compile        = 3,
+        Id_exec           = 4,
+        MAX_PROTOTYPE_ID  = 4;
+
+// #/string_id_map#
+
+    private Script script;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeString.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeString.java
new file mode 100644
index 0000000..972415d
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeString.java
@@ -0,0 +1,983 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Tom Beauvais
+ *   Norris Boyd
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.text.Collator;
+
+/**
+ * This class implements the String native object.
+ *
+ * See ECMA 15.5.
+ *
+ * String methods for dealing with regular expressions are
+ * ported directly from C. Latest port is from version 1.40.12.19
+ * in the JSFUN13_BRANCH.
+ *
+ * @author Mike McCabe
+ * @author Norris Boyd
+ */
+final class NativeString extends IdScriptableObject
+{
+    static final long serialVersionUID = 920268368584188687L;
+
+    private static final Object STRING_TAG = new Object();
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeString obj = new NativeString("");
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    private NativeString(String s) {
+        string = s;
+    }
+
+    public String getClassName() {
+        return "String";
+    }
+
+    private static final int
+        Id_length                    =  1,
+        MAX_INSTANCE_ID              =  1;
+
+    protected int getMaxInstanceId()
+    {
+        return MAX_INSTANCE_ID;
+    }
+
+    protected int findInstanceIdInfo(String s)
+    {
+        if (s.equals("length")) {
+            return instanceIdInfo(DONTENUM | READONLY | PERMANENT, Id_length);
+        }
+        return super.findInstanceIdInfo(s);
+    }
+
+    protected String getInstanceIdName(int id)
+    {
+        if (id == Id_length) { return "length"; }
+        return super.getInstanceIdName(id);
+    }
+
+    protected Object getInstanceIdValue(int id)
+    {
+        if (id == Id_length) {
+            return ScriptRuntime.wrapInt(string.length());
+        }
+        return super.getInstanceIdValue(id);
+    }
+
+    protected void fillConstructorProperties(IdFunctionObject ctor)
+    {
+        addIdFunctionProperty(ctor, STRING_TAG, ConstructorId_fromCharCode,
+                "fromCharCode", 1);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_charAt, "charAt", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_charCodeAt, "charCodeAt", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_indexOf, "indexOf", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_lastIndexOf, "lastIndexOf", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_split, "split", 3);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_substring, "substring", 3);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_toLowerCase, "toLowerCase", 1);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_toUpperCase, "toUpperCase", 1);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_substr, "substr", 3);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_concat, "concat", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_slice, "slice", 3);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_equalsIgnoreCase, "equalsIgnoreCase", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_match, "match", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_search, "search", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_replace, "replace", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_localeCompare, "localeCompare", 2);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_toLocaleLowerCase, "toLocaleLowerCase", 1);
+        addIdFunctionProperty(ctor, STRING_TAG,
+                ConstructorId_fromCharCode, "fromCharCode", 1);
+        super.fillConstructorProperties(ctor);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor:       arity=1; s="constructor";       break;
+          case Id_toString:          arity=0; s="toString";          break;
+          case Id_toSource:          arity=0; s="toSource";          break;
+          case Id_valueOf:           arity=0; s="valueOf";           break;
+          case Id_charAt:            arity=1; s="charAt";            break;
+          case Id_charCodeAt:        arity=1; s="charCodeAt";        break;
+          case Id_indexOf:           arity=1; s="indexOf";           break;
+          case Id_lastIndexOf:       arity=1; s="lastIndexOf";       break;
+          case Id_split:             arity=2; s="split";             break;
+          case Id_substring:         arity=2; s="substring";         break;
+          case Id_toLowerCase:       arity=0; s="toLowerCase";       break;
+          case Id_toUpperCase:       arity=0; s="toUpperCase";       break;
+          case Id_substr:            arity=2; s="substr";            break;
+          case Id_concat:            arity=1; s="concat";            break;
+          case Id_slice:             arity=2; s="slice";             break;
+          case Id_bold:              arity=0; s="bold";              break;
+          case Id_italics:           arity=0; s="italics";           break;
+          case Id_fixed:             arity=0; s="fixed";             break;
+          case Id_strike:            arity=0; s="strike";            break;
+          case Id_small:             arity=0; s="small";             break;
+          case Id_big:               arity=0; s="big";               break;
+          case Id_blink:             arity=0; s="blink";             break;
+          case Id_sup:               arity=0; s="sup";               break;
+          case Id_sub:               arity=0; s="sub";               break;
+          case Id_fontsize:          arity=0; s="fontsize";          break;
+          case Id_fontcolor:         arity=0; s="fontcolor";         break;
+          case Id_link:              arity=0; s="link";              break;
+          case Id_anchor:            arity=0; s="anchor";            break;
+          case Id_equals:            arity=1; s="equals";            break;
+          case Id_equalsIgnoreCase:  arity=1; s="equalsIgnoreCase";  break;
+          case Id_match:             arity=1; s="match";             break;
+          case Id_search:            arity=1; s="search";            break;
+          case Id_replace:           arity=1; s="replace";           break;
+          case Id_localeCompare:     arity=1; s="localeCompare";     break;
+          case Id_toLocaleLowerCase: arity=0; s="toLocaleLowerCase"; break;
+          case Id_toLocaleUpperCase: arity=0; s="toLocaleUpperCase"; break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(STRING_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(STRING_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+      again:
+        for(;;) {
+            switch (id) {
+              case ConstructorId_charAt:
+              case ConstructorId_charCodeAt:
+              case ConstructorId_indexOf:
+              case ConstructorId_lastIndexOf:
+              case ConstructorId_split:
+              case ConstructorId_substring:
+              case ConstructorId_toLowerCase:
+              case ConstructorId_toUpperCase:
+              case ConstructorId_substr:
+              case ConstructorId_concat:
+              case ConstructorId_slice:
+              case ConstructorId_equalsIgnoreCase:
+              case ConstructorId_match:
+              case ConstructorId_search:
+              case ConstructorId_replace:
+              case ConstructorId_localeCompare:
+              case ConstructorId_toLocaleLowerCase: {
+                thisObj = ScriptRuntime.toObject(scope,
+                        ScriptRuntime.toString(args[0]));
+                Object[] newArgs = new Object[args.length-1];
+                for (int i=0; i < newArgs.length; i++)
+                    newArgs[i] = args[i+1];
+                args = newArgs;
+                id = -id;
+                continue again;
+              }
+    
+              case ConstructorId_fromCharCode: {
+                int N = args.length;
+                if (N < 1)
+                    return "";
+                StringBuffer sb = new StringBuffer(N);
+                for (int i = 0; i != N; ++i) {
+                    sb.append(ScriptRuntime.toUint16(args[i]));
+                }
+                return sb.toString();
+              }
+    
+              case Id_constructor: {
+                String s = (args.length >= 1)
+                    ? ScriptRuntime.toString(args[0]) : "";
+                if (thisObj == null) {
+                    // new String(val) creates a new String object.
+                    return new NativeString(s);
+                }
+                // String(val) converts val to a string value.
+                return s;
+              }
+    
+              case Id_toString:
+              case Id_valueOf:
+                // ECMA 15.5.4.2: 'the toString function is not generic.
+                return realThis(thisObj, f).string;
+    
+              case Id_toSource: {
+                String s = realThis(thisObj, f).string;
+                return "(new String(\""+ScriptRuntime.escapeString(s)+"\"))";
+              }
+    
+              case Id_charAt:
+              case Id_charCodeAt: {
+                 // See ECMA 15.5.4.[4,5]
+                String target = ScriptRuntime.toString(thisObj);
+                double pos = ScriptRuntime.toInteger(args, 0);
+                if (pos < 0 || pos >= target.length()) {
+                    if (id == Id_charAt) return "";
+                    else return ScriptRuntime.NaNobj;
+                }
+                char c = target.charAt((int)pos);
+                if (id == Id_charAt) return String.valueOf(c);
+                else return ScriptRuntime.wrapInt(c);
+              }
+    
+              case Id_indexOf:
+                return ScriptRuntime.wrapInt(js_indexOf(
+                    ScriptRuntime.toString(thisObj), args));
+    
+              case Id_lastIndexOf:
+                return ScriptRuntime.wrapInt(js_lastIndexOf(
+                    ScriptRuntime.toString(thisObj), args));
+    
+              case Id_split:
+                return js_split(cx, scope, ScriptRuntime.toString(thisObj),
+                        args);
+    
+              case Id_substring:
+                return js_substring(cx, ScriptRuntime.toString(thisObj), args);
+    
+              case Id_toLowerCase:
+                // See ECMA 15.5.4.11
+                return ScriptRuntime.toString(thisObj).toLowerCase();
+    
+              case Id_toUpperCase:
+                // See ECMA 15.5.4.12
+                return ScriptRuntime.toString(thisObj).toUpperCase();
+    
+              case Id_substr:
+                return js_substr(ScriptRuntime.toString(thisObj), args);
+    
+              case Id_concat:
+                return js_concat(ScriptRuntime.toString(thisObj), args);
+    
+              case Id_slice:
+                return js_slice(ScriptRuntime.toString(thisObj), args);
+    
+              case Id_bold:
+                return tagify(thisObj, "b", null, null);
+    
+              case Id_italics:
+                return tagify(thisObj, "i", null, null);
+    
+              case Id_fixed:
+                return tagify(thisObj, "tt", null, null);
+    
+              case Id_strike:
+                return tagify(thisObj, "strike", null, null);
+    
+              case Id_small:
+                return tagify(thisObj, "small", null, null);
+    
+              case Id_big:
+                return tagify(thisObj, "big", null, null);
+    
+              case Id_blink:
+                return tagify(thisObj, "blink", null, null);
+    
+              case Id_sup:
+                return tagify(thisObj, "sup", null, null);
+    
+              case Id_sub:
+                return tagify(thisObj, "sub", null, null);
+    
+              case Id_fontsize:
+                return tagify(thisObj, "font", "size", args);
+    
+              case Id_fontcolor:
+                return tagify(thisObj, "font", "color", args);
+    
+              case Id_link:
+                return tagify(thisObj, "a", "href", args);
+    
+              case Id_anchor:
+                return tagify(thisObj, "a", "name", args);
+    
+              case Id_equals:
+              case Id_equalsIgnoreCase: {
+                String s1 = ScriptRuntime.toString(thisObj);
+                String s2 = ScriptRuntime.toString(args, 0);
+                return ScriptRuntime.wrapBoolean(
+                    (id == Id_equals) ? s1.equals(s2) 
+                                      : s1.equalsIgnoreCase(s2));
+              }
+                  
+              case Id_match:
+              case Id_search:
+              case Id_replace:
+                {
+                    int actionType;
+                    if (id == Id_match) {
+                        actionType = RegExpProxy.RA_MATCH;
+                    } else if (id == Id_search) {
+                        actionType = RegExpProxy.RA_SEARCH;
+                    } else {
+                        actionType = RegExpProxy.RA_REPLACE;
+                    }
+                    return ScriptRuntime.checkRegExpProxy(cx).
+                        action(cx, scope, thisObj, args, actionType);
+                }
+                // ECMA-262 1 5.5.4.9
+              case Id_localeCompare:
+                {
+                    // For now, create and configure a collator instance. I can't
+                    // actually imagine that this'd be slower than caching them
+                    // a la ClassCache, so we aren't trying to outsmart ourselves
+                    // with a caching mechanism for now.
+                    Collator collator = Collator.getInstance(cx.getLocale());
+                    collator.setStrength(Collator.IDENTICAL);
+                    collator.setDecomposition(Collator.CANONICAL_DECOMPOSITION);
+                    return ScriptRuntime.wrapNumber(collator.compare(
+                            ScriptRuntime.toString(thisObj), 
+                            ScriptRuntime.toString(args, 0)));
+                }
+              case Id_toLocaleLowerCase:
+                {
+                    return ScriptRuntime.toString(thisObj)
+                            .toLowerCase(cx.getLocale());
+                }
+              case Id_toLocaleUpperCase:
+                {
+                    return ScriptRuntime.toString(thisObj)
+                            .toUpperCase(cx.getLocale());
+                }
+            }
+            throw new IllegalArgumentException(String.valueOf(id));
+        }
+    }
+
+    private static NativeString realThis(Scriptable thisObj, IdFunctionObject f)
+    {
+        if (!(thisObj instanceof NativeString))
+            throw incompatibleCallError(f);
+        return (NativeString)thisObj;
+    }
+
+    /*
+     * HTML composition aids.
+     */
+    private static String tagify(Object thisObj, String tag,
+                                 String attribute, Object[] args)
+    {
+        String str = ScriptRuntime.toString(thisObj);
+        StringBuffer result = new StringBuffer();
+        result.append('<');
+        result.append(tag);
+        if (attribute != null) {
+            result.append(' ');
+            result.append(attribute);
+            result.append("=\"");
+            result.append(ScriptRuntime.toString(args, 0));
+            result.append('"');
+        }
+        result.append('>');
+        result.append(str);
+        result.append("</");
+        result.append(tag);
+        result.append('>');
+        return result.toString();
+    }
+
+    public String toString() {
+        return string;
+    }
+
+    /* Make array-style property lookup work for strings.
+     * XXX is this ECMA?  A version check is probably needed. In js too.
+     */
+    public Object get(int index, Scriptable start) {
+        if (0 <= index && index < string.length()) {
+            return string.substring(index, index + 1);
+        }
+        return super.get(index, start);
+    }
+
+    public void put(int index, Scriptable start, Object value) {
+        if (0 <= index && index < string.length()) {
+            return;
+        }
+        super.put(index, start, value);
+    }
+
+    /*
+     *
+     * See ECMA 15.5.4.6.  Uses Java String.indexOf()
+     * OPT to add - BMH searching from jsstr.c.
+     */
+    private static int js_indexOf(String target, Object[] args) {
+        String search = ScriptRuntime.toString(args, 0);
+        double begin = ScriptRuntime.toInteger(args, 1);
+
+        if (begin > target.length()) {
+            return -1;
+        } else {
+            if (begin < 0)
+                begin = 0;
+            return target.indexOf(search, (int)begin);
+        }
+    }
+
+    /*
+     *
+     * See ECMA 15.5.4.7
+     *
+     */
+    private static int js_lastIndexOf(String target, Object[] args) {
+        String search = ScriptRuntime.toString(args, 0);
+        double end = ScriptRuntime.toNumber(args, 1);
+
+        if (end != end || end > target.length())
+            end = target.length();
+        else if (end < 0)
+            end = 0;
+
+        return target.lastIndexOf(search, (int)end);
+    }
+
+    /*
+     * Used by js_split to find the next split point in target,
+     * starting at offset ip and looking either for the given
+     * separator substring, or for the next re match.  ip and
+     * matchlen must be reference variables (assumed to be arrays of
+     * length 1) so they can be updated in the leading whitespace or
+     * re case.
+     *
+     * Return -1 on end of string, >= 0 for a valid index of the next
+     * separator occurrence if found, or the string length if no
+     * separator is found.
+     */
+    private static int find_split(Context cx, Scriptable scope, String target,
+                                  String separator, int version,
+                                  RegExpProxy reProxy, Scriptable re,
+                                  int[] ip, int[] matchlen, boolean[] matched,
+                                  String[][] parensp)
+    {
+        int i = ip[0];
+        int length = target.length();
+
+        /*
+         * Perl4 special case for str.split(' '), only if the user has selected
+         * JavaScript1.2 explicitly.  Split on whitespace, and skip leading w/s.
+         * Strange but true, apparently modeled after awk.
+         */
+        if (version == Context.VERSION_1_2 &&
+            re == null && separator.length() == 1 && separator.charAt(0) == ' ')
+        {
+            /* Skip leading whitespace if at front of str. */
+            if (i == 0) {
+                while (i < length && Character.isWhitespace(target.charAt(i)))
+                    i++;
+                ip[0] = i;
+            }
+
+            /* Don't delimit whitespace at end of string. */
+            if (i == length)
+                return -1;
+
+            /* Skip over the non-whitespace chars. */
+            while (i < length
+                   && !Character.isWhitespace(target.charAt(i)))
+                i++;
+
+            /* Now skip the next run of whitespace. */
+            int j = i;
+            while (j < length && Character.isWhitespace(target.charAt(j)))
+                j++;
+
+            /* Update matchlen to count delimiter chars. */
+            matchlen[0] = j - i;
+            return i;
+        }
+
+        /*
+         * Stop if past end of string.  If at end of string, we will
+         * return target length, so that
+         *
+         *  "ab,".split(',') => new Array("ab", "")
+         *
+         * and the resulting array converts back to the string "ab,"
+         * for symmetry.  NB: This differs from perl, which drops the
+         * trailing empty substring if the LIMIT argument is omitted.
+         */
+        if (i > length)
+            return -1;
+
+        /*
+         * Match a regular expression against the separator at or
+         * above index i.  Return -1 at end of string instead of
+         * trying for a match, so we don't get stuck in a loop.
+         */
+        if (re != null) {
+            return reProxy.find_split(cx, scope, target, separator, re,
+                                      ip, matchlen, matched, parensp);
+        }
+
+        /*
+         * Deviate from ECMA by never splitting an empty string by any separator
+         * string into a non-empty array (an array of length 1 that contains the
+         * empty string).
+         */
+        if (version != Context.VERSION_DEFAULT && version < Context.VERSION_1_3
+            && length == 0)
+            return -1;
+
+        /*
+         * Special case: if sep is the empty string, split str into
+         * one character substrings.  Let our caller worry about
+         * whether to split once at end of string into an empty
+         * substring.
+         *
+         * For 1.2 compatibility, at the end of the string, we return the length as
+         * the result, and set the separator length to 1 -- this allows the caller
+         * to include an additional null string at the end of the substring list.
+         */
+        if (separator.length() == 0) {
+            if (version == Context.VERSION_1_2) {
+                if (i == length) {
+                    matchlen[0] = 1;
+                    return i;
+                }
+                return i + 1;
+            }
+            return (i == length) ? -1 : i + 1;
+        }
+
+        /* Punt to j.l.s.indexOf; return target length if separator is
+         * not found.
+         */
+        if (ip[0] >= length)
+            return length;
+
+        i = target.indexOf(separator, ip[0]);
+
+        return (i != -1) ? i : length;
+    }
+
+    /*
+     * See ECMA 15.5.4.8.  Modified to match JS 1.2 - optionally takes
+     * a limit argument and accepts a regular expression as the split
+     * argument.
+     */
+    private static Object js_split(Context cx, Scriptable scope,
+                                   String target, Object[] args)
+    {
+        // create an empty Array to return;
+        Scriptable top = getTopLevelScope(scope);
+        Scriptable result = ScriptRuntime.newObject(cx, top, "Array", null);
+
+        // return an array consisting of the target if no separator given
+        // don't check against undefined, because we want
+        // 'fooundefinedbar'.split(void 0) to split to ['foo', 'bar']
+        if (args.length < 1) {
+            result.put(0, result, target);
+            return result;
+        }
+
+        // Use the second argument as the split limit, if given.
+        boolean limited = (args.length > 1) && (args[1] != Undefined.instance);
+        long limit = 0;  // Initialize to avoid warning.
+        if (limited) {
+            /* Clamp limit between 0 and 1 + string length. */
+            limit = ScriptRuntime.toUint32(args[1]);
+            if (limit > target.length())
+                limit = 1 + target.length();
+        }
+
+        String separator = null;
+        int[] matchlen = new int[1];
+        Scriptable re = null;
+        RegExpProxy reProxy = null;
+        if (args[0] instanceof Scriptable) {
+            reProxy = ScriptRuntime.getRegExpProxy(cx);
+            if (reProxy != null) {
+                Scriptable test = (Scriptable)args[0];
+                if (reProxy.isRegExp(test)) {
+                    re = test;
+                }
+            }
+        }
+        if (re == null) {
+            separator = ScriptRuntime.toString(args[0]);
+            matchlen[0] = separator.length();
+        }
+
+        // split target with separator or re
+        int[] ip = { 0 };
+        int match;
+        int len = 0;
+        boolean[] matched = { false };
+        String[][] parens = { null };
+        int version = cx.getLanguageVersion();
+        while ((match = find_split(cx, scope, target, separator, version,
+                                   reProxy, re, ip, matchlen, matched, parens))
+               >= 0)
+        {
+            if ((limited && len >= limit) || (match > target.length()))
+                break;
+
+            String substr;
+            if (target.length() == 0)
+                substr = target;
+            else
+                substr = target.substring(ip[0], match);
+
+            result.put(len, result, substr);
+            len++;
+        /*
+         * Imitate perl's feature of including parenthesized substrings
+         * that matched part of the delimiter in the new array, after the
+         * split substring that was delimited.
+         */
+            if (re != null && matched[0] == true) {
+                int size = parens[0].length;
+                for (int num = 0; num < size; num++) {
+                    if (limited && len >= limit)
+                        break;
+                    result.put(len, result, parens[0][num]);
+                    len++;
+                }
+                matched[0] = false;
+            }
+            ip[0] = match + matchlen[0];
+
+            if (version < Context.VERSION_1_3
+                && version != Context.VERSION_DEFAULT)
+            {
+        /*
+         * Deviate from ECMA to imitate Perl, which omits a final
+         * split unless a limit argument is given and big enough.
+         */
+                if (!limited && ip[0] == target.length())
+                    break;
+            }
+        }
+        return result;
+    }
+
+    /*
+     * See ECMA 15.5.4.15
+     */
+    private static String js_substring(Context cx, String target,
+                                       Object[] args)
+    {
+        int length = target.length();
+        double start = ScriptRuntime.toInteger(args, 0);
+        double end;
+
+        if (start < 0)
+            start = 0;
+        else if (start > length)
+            start = length;
+
+        if (args.length <= 1 || args[1] == Undefined.instance) {
+            end = length;
+        } else {
+            end = ScriptRuntime.toInteger(args[1]);
+            if (end < 0)
+                end = 0;
+            else if (end > length)
+                end = length;
+
+            // swap if end < start
+            if (end < start) {
+                if (cx.getLanguageVersion() != Context.VERSION_1_2) {
+                    double temp = start;
+                    start = end;
+                    end = temp;
+                } else {
+                    // Emulate old JDK1.0 java.lang.String.substring()
+                    end = start;
+                }
+            }
+        }
+        return target.substring((int)start, (int)end);
+    }
+
+    int getLength() {
+        return string.length();
+    }
+
+    /*
+     * Non-ECMA methods.
+     */
+    private static String js_substr(String target, Object[] args) {
+        if (args.length < 1)
+            return target;
+
+        double begin = ScriptRuntime.toInteger(args[0]);
+        double end;
+        int length = target.length();
+
+        if (begin < 0) {
+            begin += length;
+            if (begin < 0)
+                begin = 0;
+        } else if (begin > length) {
+            begin = length;
+        }
+
+        if (args.length == 1) {
+            end = length;
+        } else {
+            end = ScriptRuntime.toInteger(args[1]);
+            if (end < 0)
+                end = 0;
+            end += begin;
+            if (end > length)
+                end = length;
+        }
+
+        return target.substring((int)begin, (int)end);
+    }
+
+    /*
+     * Python-esque sequence operations.
+     */
+    private static String js_concat(String target, Object[] args) {
+        int N = args.length;
+        if (N == 0) { return target; }
+        else if (N == 1) {
+            String arg = ScriptRuntime.toString(args[0]);
+            return target.concat(arg);
+        }
+
+        // Find total capacity for the final string to avoid unnecessary
+        // re-allocations in StringBuffer
+        int size = target.length();
+        String[] argsAsStrings = new String[N];
+        for (int i = 0; i != N; ++i) {
+            String s = ScriptRuntime.toString(args[i]);
+            argsAsStrings[i] = s;
+            size += s.length();
+        }
+
+        StringBuffer result = new StringBuffer(size);
+        result.append(target);
+        for (int i = 0; i != N; ++i) {
+            result.append(argsAsStrings[i]);
+        }
+        return result.toString();
+    }
+
+    private static String js_slice(String target, Object[] args) {
+        if (args.length != 0) {
+            double begin = ScriptRuntime.toInteger(args[0]);
+            double end;
+            int length = target.length();
+            if (begin < 0) {
+                begin += length;
+                if (begin < 0)
+                    begin = 0;
+            } else if (begin > length) {
+                begin = length;
+            }
+
+            if (args.length == 1) {
+                end = length;
+            } else {
+                end = ScriptRuntime.toInteger(args[1]);
+                if (end < 0) {
+                    end += length;
+                    if (end < 0)
+                        end = 0;
+                } else if (end > length) {
+                    end = length;
+                }
+                if (end < begin)
+                    end = begin;
+            }
+            return target.substring((int)begin, (int)end);
+        }
+        return target;
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-01 22:11:49 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 3: c=s.charAt(2);
+                if (c=='b') { if (s.charAt(0)=='s' && s.charAt(1)=='u') {id=Id_sub; break L0;} }
+                else if (c=='g') { if (s.charAt(0)=='b' && s.charAt(1)=='i') {id=Id_big; break L0;} }
+                else if (c=='p') { if (s.charAt(0)=='s' && s.charAt(1)=='u') {id=Id_sup; break L0;} }
+                break L;
+            case 4: c=s.charAt(0);
+                if (c=='b') { X="bold";id=Id_bold; }
+                else if (c=='l') { X="link";id=Id_link; }
+                break L;
+            case 5: switch (s.charAt(4)) {
+                case 'd': X="fixed";id=Id_fixed; break L;
+                case 'e': X="slice";id=Id_slice; break L;
+                case 'h': X="match";id=Id_match; break L;
+                case 'k': X="blink";id=Id_blink; break L;
+                case 'l': X="small";id=Id_small; break L;
+                case 't': X="split";id=Id_split; break L;
+                } break L;
+            case 6: switch (s.charAt(1)) {
+                case 'e': X="search";id=Id_search; break L;
+                case 'h': X="charAt";id=Id_charAt; break L;
+                case 'n': X="anchor";id=Id_anchor; break L;
+                case 'o': X="concat";id=Id_concat; break L;
+                case 'q': X="equals";id=Id_equals; break L;
+                case 't': X="strike";id=Id_strike; break L;
+                case 'u': X="substr";id=Id_substr; break L;
+                } break L;
+            case 7: switch (s.charAt(1)) {
+                case 'a': X="valueOf";id=Id_valueOf; break L;
+                case 'e': X="replace";id=Id_replace; break L;
+                case 'n': X="indexOf";id=Id_indexOf; break L;
+                case 't': X="italics";id=Id_italics; break L;
+                } break L;
+            case 8: c=s.charAt(4);
+                if (c=='r') { X="toString";id=Id_toString; }
+                else if (c=='s') { X="fontsize";id=Id_fontsize; }
+                else if (c=='u') { X="toSource";id=Id_toSource; }
+                break L;
+            case 9: c=s.charAt(0);
+                if (c=='f') { X="fontcolor";id=Id_fontcolor; }
+                else if (c=='s') { X="substring";id=Id_substring; }
+                break L;
+            case 10: X="charCodeAt";id=Id_charCodeAt; break L;
+            case 11: switch (s.charAt(2)) {
+                case 'L': X="toLowerCase";id=Id_toLowerCase; break L;
+                case 'U': X="toUpperCase";id=Id_toUpperCase; break L;
+                case 'n': X="constructor";id=Id_constructor; break L;
+                case 's': X="lastIndexOf";id=Id_lastIndexOf; break L;
+                } break L;
+            case 13: X="localeCompare";id=Id_localeCompare; break L;
+            case 16: X="equalsIgnoreCase";id=Id_equalsIgnoreCase; break L;
+            case 17: c=s.charAt(8);
+                if (c=='L') { X="toLocaleLowerCase";id=Id_toLocaleLowerCase; }
+                else if (c=='U') { X="toLocaleUpperCase";id=Id_toLocaleUpperCase; }
+                break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        ConstructorId_fromCharCode   = -1,
+
+        Id_constructor               = 1,
+        Id_toString                  = 2,
+        Id_toSource                  = 3,
+        Id_valueOf                   = 4,
+        Id_charAt                    = 5,
+        Id_charCodeAt                = 6,
+        Id_indexOf                   = 7,
+        Id_lastIndexOf               = 8,
+        Id_split                     = 9,
+        Id_substring                 = 10,
+        Id_toLowerCase               = 11,
+        Id_toUpperCase               = 12,
+        Id_substr                    = 13,
+        Id_concat                    = 14,
+        Id_slice                     = 15,
+        Id_bold                      = 16,
+        Id_italics                   = 17,
+        Id_fixed                     = 18,
+        Id_strike                    = 19,
+        Id_small                     = 20,
+        Id_big                       = 21,
+        Id_blink                     = 22,
+        Id_sup                       = 23,
+        Id_sub                       = 24,
+        Id_fontsize                  = 25,
+        Id_fontcolor                 = 26,
+        Id_link                      = 27,
+        Id_anchor                    = 28,
+        Id_equals                    = 29,
+        Id_equalsIgnoreCase          = 30,
+        Id_match                     = 31,
+        Id_search                    = 32,
+        Id_replace                   = 33,
+        Id_localeCompare             = 34,
+        Id_toLocaleLowerCase         = 35,
+        Id_toLocaleUpperCase         = 36,
+        MAX_PROTOTYPE_ID             = 36;
+
+// #/string_id_map#
+
+    private static final int 
+        ConstructorId_charAt         = -Id_charAt,
+        ConstructorId_charCodeAt     = -Id_charCodeAt,
+        ConstructorId_indexOf        = -Id_indexOf,
+        ConstructorId_lastIndexOf    = -Id_lastIndexOf,
+        ConstructorId_split          = -Id_split,
+        ConstructorId_substring      = -Id_substring,
+        ConstructorId_toLowerCase    = -Id_toLowerCase,
+        ConstructorId_toUpperCase    = -Id_toUpperCase,
+        ConstructorId_substr         = -Id_substr,
+        ConstructorId_concat         = -Id_concat,
+        ConstructorId_slice          = -Id_slice,
+        ConstructorId_equalsIgnoreCase = -Id_equalsIgnoreCase,
+        ConstructorId_match          = -Id_match,
+        ConstructorId_search         = -Id_search,
+        ConstructorId_replace        = -Id_replace,
+        ConstructorId_localeCompare  = -Id_localeCompare,
+        ConstructorId_toLocaleLowerCase = -Id_toLocaleLowerCase;
+
+    private String string;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java
new file mode 100644
index 0000000..83683b2
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeWith.java
@@ -0,0 +1,207 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+
+/**
+ * This class implements the object lookup required for the
+ * <code>with</code> statement.
+ * It simply delegates every action to its prototype except
+ * for operations on its parent.
+ */
+public class NativeWith implements Scriptable, IdFunctionCall, Serializable {
+    
+    private static final long serialVersionUID = 1L;
+
+    static void init(Scriptable scope, boolean sealed)
+    {
+        NativeWith obj = new NativeWith();
+
+        obj.setParentScope(scope);
+        obj.setPrototype(ScriptableObject.getObjectPrototype(scope));
+
+        IdFunctionObject ctor = new IdFunctionObject(obj, FTAG, Id_constructor,
+                                         "With", 0, scope);
+        ctor.markAsConstructor(obj);
+        if (sealed) {
+            ctor.sealObject();
+        }
+        ctor.exportAsScopeProperty();
+    }
+
+    private NativeWith() {
+    }
+
+    protected NativeWith(Scriptable parent, Scriptable prototype) {
+        this.parent = parent;
+        this.prototype = prototype;
+    }
+
+    public String getClassName() {
+        return "With";
+    }
+
+    public boolean has(String id, Scriptable start)
+    {
+        return prototype.has(id, prototype);
+    }
+
+    public boolean has(int index, Scriptable start)
+    {
+        return prototype.has(index, prototype);
+    }
+
+    public Object get(String id, Scriptable start)
+    {
+        if (start == this)
+            start = prototype;
+        return prototype.get(id, start);
+    }
+
+    public Object get(int index, Scriptable start)
+    {
+        if (start == this)
+            start = prototype;
+        return prototype.get(index, start);
+    }
+
+    public void put(String id, Scriptable start, Object value)
+    {
+        if (start == this)
+            start = prototype;
+        prototype.put(id, start, value);
+    }
+
+    public void put(int index, Scriptable start, Object value)
+    {
+        if (start == this)
+            start = prototype;
+        prototype.put(index, start, value);
+    }
+
+    public void delete(String id)
+    {
+        prototype.delete(id);
+    }
+
+    public void delete(int index)
+    {
+        prototype.delete(index);
+    }
+
+    public Scriptable getPrototype() {
+        return prototype;
+    }
+
+    public void setPrototype(Scriptable prototype) {
+        this.prototype = prototype;
+    }
+
+    public Scriptable getParentScope() {
+        return parent;
+    }
+
+    public void setParentScope(Scriptable parent) {
+        this.parent = parent;
+    }
+
+    public Object[] getIds() {
+        return prototype.getIds();
+    }
+
+    public Object getDefaultValue(Class typeHint) {
+        return prototype.getDefaultValue(typeHint);
+    }
+
+    public boolean hasInstance(Scriptable value) {
+        return prototype.hasInstance(value);
+    }
+
+    /**
+     * Must return null to continue looping or the final collection result.
+     */
+    protected Object updateDotQuery(boolean value)
+    {
+        // NativeWith itself does not support it
+        throw new IllegalStateException();
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (f.hasTag(FTAG)) {
+            if (f.methodId() == Id_constructor) {
+                throw Context.reportRuntimeError1("msg.cant.call.indirect", "With");
+            }
+        }
+        throw f.unknown();
+    }
+
+    static boolean isWithFunction(Object functionObj)
+    {
+        if (functionObj instanceof IdFunctionObject) {
+            IdFunctionObject f = (IdFunctionObject)functionObj;
+            return f.hasTag(FTAG) && f.methodId() == Id_constructor;
+        }
+        return false;
+    }
+
+    static Object newWithSpecial(Context cx, Scriptable scope, Object[] args)
+    {
+        ScriptRuntime.checkDeprecated(cx, "With");
+        scope = ScriptableObject.getTopLevelScope(scope);
+        NativeWith thisObj = new NativeWith();
+        thisObj.setPrototype(args.length == 0
+                             ? ScriptableObject.getClassPrototype(scope,
+                                                                  "Object")
+                             : ScriptRuntime.toObject(cx, scope, args[0]));
+        thisObj.setParentScope(scope);
+        return thisObj;
+    }
+
+    private static final Object FTAG = new Object();
+
+    private static final int
+        Id_constructor = 1;
+
+    protected Scriptable prototype;
+    protected Scriptable parent;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Node.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Node.java
new file mode 100644
index 0000000..4298388
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Node.java
@@ -0,0 +1,1394 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roshan James
+ *   Roger Lawrence
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.Map;
+import java.util.LinkedHashMap;
+import java.util.Iterator;
+import java.util.Collections;
+
+/**
+ * This class implements the root of the intermediate representation.
+ *
+ * @author Norris Boyd
+ * @author Mike McCabe
+ */
+
+public class Node
+{
+    public static final int
+        FUNCTION_PROP      =  1,
+        LOCAL_PROP         =  2,
+        LOCAL_BLOCK_PROP   =  3,
+        REGEXP_PROP        =  4,
+        CASEARRAY_PROP     =  5,
+    /*
+        the following properties are defined and manipulated by the
+        optimizer -
+        TARGETBLOCK_PROP - the block referenced by a branch node
+        VARIABLE_PROP - the variable referenced by a BIND or NAME node
+        ISNUMBER_PROP - this node generates code on Number children and
+                        delivers a Number result (as opposed to Objects)
+        DIRECTCALL_PROP - this call node should emit code to test the function
+                          object against the known class and call diret if it
+                          matches.
+    */
+
+        TARGETBLOCK_PROP   =  6,
+        VARIABLE_PROP      =  7,
+        ISNUMBER_PROP      =  8,
+        DIRECTCALL_PROP    =  9,
+        SPECIALCALL_PROP   = 10,
+        SKIP_INDEXES_PROP  = 11, // array of skipped indexes of array literal
+        OBJECT_IDS_PROP    = 12, // array of properties for object literal
+        INCRDECR_PROP      = 13, // pre or post type of increment/decerement
+        CATCH_SCOPE_PROP   = 14, // index of catch scope block in catch
+        LABEL_ID_PROP      = 15, // label id: code generation uses it
+        MEMBER_TYPE_PROP   = 16, // type of element access operation
+        NAME_PROP          = 17, // property name
+        CONTROL_BLOCK_PROP = 18, // flags a control block that can drop off
+        PARENTHESIZED_PROP = 19, // expression is parenthesized
+        GENERATOR_END_PROP = 20,
+        DESTRUCTURING_ARRAY_LENGTH = 21,
+        DESTRUCTURING_NAMES= 22,
+        LAST_PROP          = 22;
+
+    // values of ISNUMBER_PROP to specify
+    // which of the children are Number types
+    public static final int
+        BOTH = 0,
+        LEFT = 1,
+        RIGHT = 2;
+
+    public static final int    // values for SPECIALCALL_PROP
+        NON_SPECIALCALL  = 0,
+        SPECIALCALL_EVAL = 1,
+        SPECIALCALL_WITH = 2;
+
+    public static final int   // flags for INCRDECR_PROP
+        DECR_FLAG = 0x1,
+        POST_FLAG = 0x2;
+
+    public static final int   // flags for MEMBER_TYPE_PROP
+        PROPERTY_FLAG    = 0x1, // property access: element is valid name
+        ATTRIBUTE_FLAG   = 0x2, // x.@y or x..@y
+        DESCENDANTS_FLAG = 0x4; // x..y or x..@i
+
+    private static class NumberNode extends Node
+    {
+        NumberNode(double number)
+        {
+            super(Token.NUMBER);
+            this.number = number;
+        }
+
+        double number;
+    }
+
+    private static class StringNode extends Node
+    {
+        StringNode(int type, String str) {
+            super(type);
+            this.str = str;
+        }
+
+        String str;
+        Node.Scope scope;
+    }
+
+    public static class Jump extends Node
+    {
+        public Jump(int type)
+        {
+            super(type);
+        }
+
+        Jump(int type, int lineno)
+        {
+            super(type, lineno);
+        }
+
+        Jump(int type, Node child)
+        {
+            super(type, child);
+        }
+
+        Jump(int type, Node child, int lineno)
+        {
+            super(type, child, lineno);
+        }
+
+        public final Jump getJumpStatement()
+        {
+            if (!(type == Token.BREAK || type == Token.CONTINUE)) Kit.codeBug();
+            return jumpNode;
+        }
+
+        public final void setJumpStatement(Jump jumpStatement)
+        {
+            if (!(type == Token.BREAK || type == Token.CONTINUE)) Kit.codeBug();
+            if (jumpStatement == null) Kit.codeBug();
+            if (this.jumpNode != null) Kit.codeBug(); //only once
+            this.jumpNode = jumpStatement;
+        }
+
+        public final Node getDefault()
+        {
+            if (!(type == Token.SWITCH)) Kit.codeBug();
+            return target2;
+        }
+
+        public final void setDefault(Node defaultTarget)
+        {
+            if (!(type == Token.SWITCH)) Kit.codeBug();
+            if (defaultTarget.type != Token.TARGET) Kit.codeBug();
+            if (target2 != null) Kit.codeBug(); //only once
+            target2 = defaultTarget;
+        }
+
+        public final Node getFinally()
+        {
+            if (!(type == Token.TRY)) Kit.codeBug();
+            return target2;
+        }
+
+        public final void setFinally(Node finallyTarget)
+        {
+            if (!(type == Token.TRY)) Kit.codeBug();
+            if (finallyTarget.type != Token.TARGET) Kit.codeBug();
+            if (target2 != null) Kit.codeBug(); //only once
+            target2 = finallyTarget;
+        }
+
+        public final Jump getLoop()
+        {
+            if (!(type == Token.LABEL)) Kit.codeBug();
+            return jumpNode;
+        }
+
+        public final void setLoop(Jump loop)
+        {
+            if (!(type == Token.LABEL)) Kit.codeBug();
+            if (loop == null) Kit.codeBug();
+            if (jumpNode != null) Kit.codeBug(); //only once
+            jumpNode = loop;
+        }
+
+        public final Node getContinue()
+        {
+            if (type != Token.LOOP) Kit.codeBug();
+            return target2;
+        }
+
+        public final void setContinue(Node continueTarget)
+        {
+            if (type != Token.LOOP) Kit.codeBug();
+            if (continueTarget.type != Token.TARGET) Kit.codeBug();
+            if (target2 != null) Kit.codeBug(); //only once
+            target2 = continueTarget;
+        }
+
+        public Node target;
+        private Node target2;
+        private Jump jumpNode;
+    }
+    
+    static class Symbol {
+        Symbol(int declType, String name) {
+            this.declType = declType;
+            this.name = name;
+            this.index = -1;
+        }
+        /**
+         * One of Token.FUNCTION, Token.LP (for parameters), Token.VAR, 
+         * Token.LET, or Token.CONST
+         */
+        int declType;
+        int index;
+        String name;
+        Node.Scope containingTable;
+    }
+    
+    static class Scope extends Jump {
+        public Scope(int nodeType) {
+            super(nodeType);
+        }
+        
+        public Scope(int nodeType, int lineno) {
+            super(nodeType, lineno);
+        }
+        
+        public Scope(int nodeType, Node n, int lineno) {
+            super(nodeType, n, lineno);
+        }
+        
+        /*
+         * Creates a new scope node, moving symbol table information
+         * from "scope" to the new node, and making "scope" a nested
+         * scope contained by the new node.
+         * Useful for injecting a new scope in a scope chain.
+         */
+        public static Scope splitScope(Scope scope) {
+            Scope result = new Scope(scope.getType());
+            result.symbolTable = scope.symbolTable;
+            scope.symbolTable = null;
+            result.parent = scope.parent;
+            scope.parent = result;
+            result.top = scope.top;
+            return result;
+        }
+
+        public static void joinScopes(Scope source, Scope dest) {
+            source.ensureSymbolTable();
+            dest.ensureSymbolTable();
+            if (!Collections.disjoint(source.symbolTable.keySet(),
+                                      dest.symbolTable.keySet()))
+            {
+                throw Kit.codeBug();
+            }
+            dest.symbolTable.putAll(source.symbolTable);
+        }
+        
+        public void setParent(Scope parent) {
+            this.parent = parent;
+            this.top = parent == null ? (ScriptOrFnNode)this : parent.top;
+        }
+        
+        public Scope getParentScope() {
+            return parent;
+        }
+  
+        public Scope getDefiningScope(String name) {
+            for (Scope sn=this; sn != null; sn = sn.parent) {
+                if (sn.symbolTable == null)
+                    continue;
+                if (sn.symbolTable.containsKey(name))
+                    return sn;
+            }
+            return null;
+        }
+        
+        public Symbol getSymbol(String name) {
+            return symbolTable == null ? null : symbolTable.get(name);
+        }
+        
+        public void putSymbol(String name, Symbol symbol) {
+            ensureSymbolTable();
+            symbolTable.put(name, symbol);
+            symbol.containingTable = this;
+            top.addSymbol(symbol);
+        }
+        
+        public Map<String,Symbol> getSymbolTable() {
+            return symbolTable;
+        }
+        
+        private void ensureSymbolTable() {
+            if (symbolTable == null) {
+                symbolTable = new LinkedHashMap<String,Symbol>(5);
+            }
+        }
+  
+        // Use LinkedHashMap so that the iteration order is the insertion order
+        protected LinkedHashMap<String,Symbol> symbolTable;
+        private Scope parent;
+        private ScriptOrFnNode top;
+    }
+
+    private static class PropListItem
+    {
+        PropListItem next;
+        int type;
+        int intValue;
+        Object objectValue;
+    }
+
+
+    public Node(int nodeType) {
+        type = nodeType;
+    }
+
+    public Node(int nodeType, Node child) {
+        type = nodeType;
+        first = last = child;
+        child.next = null;
+    }
+
+    public Node(int nodeType, Node left, Node right) {
+        type = nodeType;
+        first = left;
+        last = right;
+        left.next = right;
+        right.next = null;
+    }
+
+    public Node(int nodeType, Node left, Node mid, Node right) {
+        type = nodeType;
+        first = left;
+        last = right;
+        left.next = mid;
+        mid.next = right;
+        right.next = null;
+    }
+
+    public Node(int nodeType, int line) {
+        type = nodeType;
+        lineno = line;
+    }
+
+    public Node(int nodeType, Node child, int line) {
+        this(nodeType, child);
+        lineno = line;
+    }
+
+    public Node(int nodeType, Node left, Node right, int line) {
+        this(nodeType, left, right);
+        lineno = line;
+    }
+
+    public Node(int nodeType, Node left, Node mid, Node right, int line) {
+        this(nodeType, left, mid, right);
+        lineno = line;
+    }
+
+    public static Node newNumber(double number) {
+        return new NumberNode(number);
+    }
+
+    public static Node newString(String str) {
+        return new StringNode(Token.STRING, str);
+    }
+
+    public static Node newString(int type, String str) {
+        return new StringNode(type, str);
+    }
+
+    public int getType() {
+        return type;
+    }
+
+    public void setType(int type) {
+        this.type = type;
+    }
+
+    public boolean hasChildren() {
+        return first != null;
+    }
+
+    public Node getFirstChild() {
+        return first;
+    }
+
+    public Node getLastChild() {
+        return last;
+    }
+
+    public Node getNext() {
+        return next;
+    }
+
+    public Node getChildBefore(Node child) {
+        if (child == first)
+            return null;
+        Node n = first;
+        while (n.next != child) {
+            n = n.next;
+            if (n == null)
+                throw new RuntimeException("node is not a child");
+        }
+        return n;
+    }
+
+    public Node getLastSibling() {
+        Node n = this;
+        while (n.next != null) {
+            n = n.next;
+        }
+        return n;
+    }
+
+    public void addChildToFront(Node child) {
+        child.next = first;
+        first = child;
+        if (last == null) {
+            last = child;
+        }
+    }
+
+    public void addChildToBack(Node child) {
+        child.next = null;
+        if (last == null) {
+            first = last = child;
+            return;
+        }
+        last.next = child;
+        last = child;
+    }
+
+    public void addChildrenToFront(Node children) {
+        Node lastSib = children.getLastSibling();
+        lastSib.next = first;
+        first = children;
+        if (last == null) {
+            last = lastSib;
+        }
+    }
+
+    public void addChildrenToBack(Node children) {
+        if (last != null) {
+            last.next = children;
+        }
+        last = children.getLastSibling();
+        if (first == null) {
+            first = children;
+        }
+    }
+
+    /**
+     * Add 'child' before 'node'.
+     */
+    public void addChildBefore(Node newChild, Node node) {
+        if (newChild.next != null)
+            throw new RuntimeException(
+                      "newChild had siblings in addChildBefore");
+        if (first == node) {
+            newChild.next = first;
+            first = newChild;
+            return;
+        }
+        Node prev = getChildBefore(node);
+        addChildAfter(newChild, prev);
+    }
+
+    /**
+     * Add 'child' after 'node'.
+     */
+    public void addChildAfter(Node newChild, Node node) {
+        if (newChild.next != null)
+            throw new RuntimeException(
+                      "newChild had siblings in addChildAfter");
+        newChild.next = node.next;
+        node.next = newChild;
+        if (last == node)
+            last = newChild;
+    }
+
+    public void removeChild(Node child) {
+        Node prev = getChildBefore(child);
+        if (prev == null)
+            first = first.next;
+        else
+            prev.next = child.next;
+        if (child == last) last = prev;
+        child.next = null;
+    }
+
+    public void replaceChild(Node child, Node newChild) {
+        newChild.next = child.next;
+        if (child == first) {
+            first = newChild;
+        } else {
+            Node prev = getChildBefore(child);
+            prev.next = newChild;
+        }
+        if (child == last)
+            last = newChild;
+        child.next = null;
+    }
+
+    public void replaceChildAfter(Node prevChild, Node newChild) {
+        Node child = prevChild.next;
+        newChild.next = child.next;
+        prevChild.next = newChild;
+        if (child == last)
+            last = newChild;
+        child.next = null;
+    }
+
+    private static final String propToString(int propType)
+    {
+        if (Token.printTrees) {
+            // If Context.printTrees is false, the compiler
+            // can remove all these strings.
+            switch (propType) {
+                case FUNCTION_PROP:      return "function";
+                case LOCAL_PROP:         return "local";
+                case LOCAL_BLOCK_PROP:   return "local_block";
+                case REGEXP_PROP:        return "regexp";
+                case CASEARRAY_PROP:     return "casearray";
+
+                case TARGETBLOCK_PROP:   return "targetblock";
+                case VARIABLE_PROP:      return "variable";
+                case ISNUMBER_PROP:      return "isnumber";
+                case DIRECTCALL_PROP:    return "directcall";
+
+                case SPECIALCALL_PROP:   return "specialcall";
+                case SKIP_INDEXES_PROP:  return "skip_indexes";
+                case OBJECT_IDS_PROP:    return "object_ids_prop";
+                case INCRDECR_PROP:      return "incrdecr_prop";
+                case CATCH_SCOPE_PROP:   return "catch_scope_prop";
+                case LABEL_ID_PROP:      return "label_id_prop";
+                case MEMBER_TYPE_PROP:   return "member_type_prop";
+                case NAME_PROP:          return "name_prop";
+                case CONTROL_BLOCK_PROP: return "control_block_prop";
+                case PARENTHESIZED_PROP: return "parenthesized_prop";
+                case GENERATOR_END_PROP: return "generator_end";
+                case DESTRUCTURING_ARRAY_LENGTH:
+                                         return "destructuring_array_length";
+                case DESTRUCTURING_NAMES:return "destructuring_names";
+
+                default: Kit.codeBug();
+            }
+        }
+        return null;
+    }
+
+    private PropListItem lookupProperty(int propType)
+    {
+        PropListItem x = propListHead;
+        while (x != null && propType != x.type) {
+            x = x.next;
+        }
+        return x;
+    }
+
+    private PropListItem ensureProperty(int propType)
+    {
+        PropListItem item = lookupProperty(propType);
+        if (item == null) {
+            item = new PropListItem();
+            item.type = propType;
+            item.next = propListHead;
+            propListHead = item;
+        }
+        return item;
+    }
+
+    public void removeProp(int propType)
+    {
+        PropListItem x = propListHead;
+        if (x != null) {
+            PropListItem prev = null;
+            while (x.type != propType) {
+                prev = x;
+                x = x.next;
+                if (x == null) { return; }
+            }
+            if (prev == null) {
+                propListHead = x.next;
+            } else {
+                prev.next = x.next;
+            }
+        }
+    }
+
+    public Object getProp(int propType)
+    {
+        PropListItem item = lookupProperty(propType);
+        if (item == null) { return null; }
+        return item.objectValue;
+    }
+
+    public int getIntProp(int propType, int defaultValue)
+    {
+        PropListItem item = lookupProperty(propType);
+        if (item == null) { return defaultValue; }
+        return item.intValue;
+    }
+
+    public int getExistingIntProp(int propType)
+    {
+        PropListItem item = lookupProperty(propType);
+        if (item == null) { Kit.codeBug(); }
+        return item.intValue;
+    }
+
+    public void putProp(int propType, Object prop)
+    {
+        if (prop == null) {
+            removeProp(propType);
+        } else {
+            PropListItem item = ensureProperty(propType);
+            item.objectValue = prop;
+        }
+    }
+
+    public void putIntProp(int propType, int prop)
+    {
+        PropListItem item = ensureProperty(propType);
+        item.intValue = prop;
+    }
+
+    public int getLineno() {
+        return lineno;
+    }
+
+    /** Can only be called when <tt>getType() == Token.NUMBER</tt> */
+    public final double getDouble() {
+        return ((NumberNode)this).number;
+    }
+
+    public final void setDouble(double number) {
+        ((NumberNode)this).number = number;
+    }
+
+    /** Can only be called when node has String context. */
+    public final String getString() {
+        return ((StringNode)this).str;
+    }
+
+    /** Can only be called when node has String context. */
+    public final void setString(String s) {
+        if (s == null) Kit.codeBug();
+        ((StringNode)this).str = s;
+    }
+    
+    /** Can only be called when node has String context. */
+    public final Scope getScope() {
+        return ((StringNode)this).scope;
+    }
+
+    /** Can only be called when node has String context. */
+    public final void setScope(Scope s) {
+        if (s == null) Kit.codeBug();
+        if (!(this instanceof StringNode)) {
+            throw Kit.codeBug();
+        }
+        ((StringNode)this).scope = s;
+    }
+
+    public static Node newTarget()
+    {
+        return new Node(Token.TARGET);
+    }
+
+    public final int labelId()
+    {
+        if (type != Token.TARGET && type != Token.YIELD) Kit.codeBug();
+        return getIntProp(LABEL_ID_PROP, -1);
+    }
+
+    public void labelId(int labelId)
+    {
+        if (type != Token.TARGET  && type != Token.YIELD) Kit.codeBug();
+        putIntProp(LABEL_ID_PROP, labelId);
+    }
+    
+
+    /**
+     * Does consistent-return analysis on the function body when strict mode is
+     * enabled.
+     *
+     *   function (x) { return (x+1) }
+     * is ok, but
+     *   function (x) { if (x < 0) return (x+1); }
+     * is not becuase the function can potentially return a value when the
+     * condition is satisfied and if not, the function does not explicitly
+     * return value.
+     *
+     * This extends to checking mismatches such as "return" and "return <value>"
+     * used in the same function. Warnings are not emitted if inconsistent
+     * returns exist in code that can be statically shown to be unreachable.
+     * Ex.
+     *   function (x) { while (true) { ... if (..) { return value } ... } }
+     * emits no warning. However if the loop had a break statement, then a
+     * warning would be emitted.
+     *
+     * The consistency analysis looks at control structures such as loops, ifs,
+     * switch, try-catch-finally blocks, examines the reachable code paths and
+     * warns the user about an inconsistent set of termination possibilities.
+     *
+     * Caveat: Since the parser flattens many control structures into almost
+     * straight-line code with gotos, it makes such analysis hard. Hence this
+     * analyser is written to taken advantage of patterns of code generated by
+     * the parser (for loops, try blocks and such) and does not do a full
+     * control flow analysis of the gotos and break/continue statements.
+     * Future changes to the parser will affect this analysis.
+     */
+
+    /**
+     * These flags enumerate the possible ways a statement/function can
+     * terminate. These flags are used by endCheck() and by the Parser to
+     * detect inconsistent return usage.
+     *
+     * END_UNREACHED is reserved for code paths that are assumed to always be
+     * able to execute (example: throw, continue)
+     *
+     * END_DROPS_OFF indicates if the statement can transfer control to the
+     * next one. Statement such as return dont. A compound statement may have
+     * some branch that drops off control to the next statement.
+     *
+     * END_RETURNS indicates that the statement can return (without arguments)
+     * END_RETURNS_VALUE indicates that the statement can return a value.
+     *
+     * A compound statement such as
+     * if (condition) {
+     *   return value;
+     * }
+     * Will be detected as (END_DROPS_OFF | END_RETURN_VALUE) by endCheck()
+     */
+    static final int END_UNREACHED = 0;
+    static final int END_DROPS_OFF = 1;
+    static final int END_RETURNS = 2;
+    static final int END_RETURNS_VALUE = 4;
+    static final int END_YIELDS = 8;
+
+    /**
+     * Checks that every return usage in a function body is consistent with the
+     * requirements of strict-mode.
+     * @return true if the function satisfies strict mode requirement.
+     */
+    public boolean hasConsistentReturnUsage()
+    {
+        int n = endCheck();
+        return (n & END_RETURNS_VALUE) == 0 ||
+               (n & (END_DROPS_OFF|END_RETURNS|END_YIELDS)) == 0;
+    }
+
+    /**
+     * Returns in the then and else blocks must be consistent with each other.
+     * If there is no else block, then the return statement can fall through.
+     * @return logical OR of END_* flags
+     */
+    private int endCheckIf()
+    {
+        Node th, el;
+        int rv = END_UNREACHED;
+
+        th = next;
+        el = ((Jump)this).target;
+
+        rv = th.endCheck();
+
+        if (el != null)
+            rv |= el.endCheck();
+        else
+            rv |= END_DROPS_OFF;
+
+        return rv;
+    }
+
+    /**
+     * Consistency of return statements is checked between the case statements.
+     * If there is no default, then the switch can fall through. If there is a
+     * default,we check to see if all code paths in the default return or if
+     * there is a code path that can fall through.
+     * @return logical OR of END_* flags
+     */
+    private int endCheckSwitch()
+    {
+        Node n;
+        int rv = END_UNREACHED;
+
+        // examine the cases
+        for (n = first.next; n != null; n = n.next)
+        {
+            if (n.type == Token.CASE) {
+                rv |= ((Jump)n).target.endCheck();
+            } else
+                break;
+        }
+
+        // we don't care how the cases drop into each other
+        rv &= ~END_DROPS_OFF;
+
+        // examine the default
+        n = ((Jump)this).getDefault();
+        if (n != null)
+            rv |= n.endCheck();
+        else
+            rv |= END_DROPS_OFF;
+
+        // remove the switch block
+        rv |= getIntProp(CONTROL_BLOCK_PROP, END_UNREACHED);
+
+        return rv;
+    }
+
+    /**
+     * If the block has a finally, return consistency is checked in the
+     * finally block. If all code paths in the finally returns, then the
+     * returns in the try-catch blocks don't matter. If there is a code path
+     * that does not return or if there is no finally block, the returns
+     * of the try and catch blocks are checked for mismatch.
+     * @return logical OR of END_* flags
+     */
+    private int endCheckTry()
+    {
+        Node n;
+        int rv = END_UNREACHED;
+
+        // check the finally if it exists
+        n = ((Jump)this).getFinally();
+        if(n != null) {
+            rv = n.next.first.endCheck();
+        } else {
+            rv = END_DROPS_OFF;
+        }
+
+        // if the finally block always returns, then none of the returns
+        // in the try or catch blocks matter
+        if ((rv & END_DROPS_OFF) != 0) {
+            rv &= ~END_DROPS_OFF;
+
+            // examine the try block
+            rv |= first.endCheck();
+
+            // check each catch block
+            n = ((Jump)this).target;
+            if (n != null)
+            {
+                // point to the first catch_scope
+                for (n = n.next.first; n != null; n = n.next.next)
+                {
+                    // check the block of user code in the catch_scope
+                    rv |= n.next.first.next.first.endCheck();
+                }
+            }
+        }
+
+        return rv;
+    }
+
+    /**
+     * Return statement in the loop body must be consistent. The default
+     * assumption for any kind of a loop is that it will eventually terminate.
+     * The only exception is a loop with a constant true condition. Code that
+     * follows such a loop is examined only if one can statically determine
+     * that there is a break out of the loop.
+     *  for(<> ; <>; <>) {}
+     *  for(<> in <> ) {}
+     *  while(<>) { }
+     *  do { } while(<>)
+     * @return logical OR of END_* flags
+     */
+    private int endCheckLoop()
+    {
+        Node n;
+        int rv = END_UNREACHED;
+
+        // To find the loop body, we look at the second to last node of the
+        // loop node, which should be the predicate that the loop should
+        // satisfy.
+        // The target of the predicate is the loop-body for all 4 kinds of
+        // loops.
+        for (n = first; n.next != last; n = n.next) {
+            /* skip */
+        }
+        if (n.type != Token.IFEQ)
+            return END_DROPS_OFF;
+
+        // The target's next is the loop body block
+        rv = ((Jump)n).target.next.endCheck();
+
+        // check to see if the loop condition is true
+        if (n.first.type == Token.TRUE)
+            rv &= ~END_DROPS_OFF;
+
+        // look for effect of breaks
+        rv |= getIntProp(CONTROL_BLOCK_PROP, END_UNREACHED);
+
+        return rv;
+    }
+
+
+    /**
+     * A general block of code is examined statement by statement. If any
+     * statement (even compound ones) returns in all branches, then subsequent
+     * statements are not examined.
+     * @return logical OR of END_* flags
+     */
+    private int endCheckBlock()
+    {
+        Node n;
+        int rv = END_DROPS_OFF;
+
+        // check each statment and if the statement can continue onto the next
+        // one, then check the next statement
+        for (n=first; ((rv & END_DROPS_OFF) != 0) && n != null; n = n.next)
+        {
+            rv &= ~END_DROPS_OFF;
+            rv |= n.endCheck();
+        }
+        return rv;
+    }
+
+    /**
+     * A labelled statement implies that there maybe a break to the label. The
+     * function processes the labelled statement and then checks the
+     * CONTROL_BLOCK_PROP property to see if there is ever a break to the
+     * particular label.
+     * @return logical OR of END_* flags
+     */
+    private int endCheckLabel()
+    {
+        int rv = END_UNREACHED;
+
+        rv = next.endCheck();
+        rv |= getIntProp(CONTROL_BLOCK_PROP, END_UNREACHED);
+
+        return rv;
+    }
+
+    /**
+     * When a break is encountered annotate the statement being broken
+     * out of by setting its CONTROL_BLOCK_PROP property.
+     * @return logical OR of END_* flags
+     */
+    private int endCheckBreak()
+    {
+        Node n = ((Jump) this).jumpNode;
+        n.putIntProp(CONTROL_BLOCK_PROP, END_DROPS_OFF);
+        return END_UNREACHED;
+    }
+
+    /**
+     * endCheck() examines the body of a function, doing a basic reachability
+     * analysis and returns a combination of flags END_* flags that indicate
+     * how the function execution can terminate. These constitute only the
+     * pessimistic set of termination conditions. It is possible that at
+     * runtime certain code paths will never be actually taken. Hence this
+     * analysis will flag errors in cases where there may not be errors.
+     * @return logical OR of END_* flags
+     */
+    private int endCheck()
+    {
+        switch(type)
+        {
+            case Token.BREAK:
+                return endCheckBreak();
+
+            case Token.EXPR_VOID:
+                if (this.first != null)
+                    return first.endCheck();
+                return END_DROPS_OFF;
+
+            case Token.YIELD:
+                return END_YIELDS;
+
+            case Token.CONTINUE:
+            case Token.THROW:
+                return END_UNREACHED;
+
+            case Token.RETURN:
+                if (this.first != null)
+                    return END_RETURNS_VALUE;
+                else
+                    return END_RETURNS;
+
+            case Token.TARGET:
+                if (next != null)
+                    return next.endCheck();
+                else
+                    return END_DROPS_OFF;
+
+            case Token.LOOP:
+                return endCheckLoop();
+
+            case Token.LOCAL_BLOCK:
+            case Token.BLOCK:
+                // there are several special kinds of blocks
+                if (first == null)
+                    return END_DROPS_OFF;
+
+                switch(first.type) {
+                    case Token.LABEL:
+                        return first.endCheckLabel();
+
+                    case Token.IFNE:
+                        return first.endCheckIf();
+
+                    case Token.SWITCH:
+                        return first.endCheckSwitch();
+
+                    case Token.TRY:
+                        return first.endCheckTry();
+
+                    default:
+                        return endCheckBlock();
+                }
+
+            default:
+                return END_DROPS_OFF;
+        }
+    }
+
+    public boolean hasSideEffects()
+    {
+        switch (type) {
+          case Token.EXPR_VOID:
+          case Token.COMMA:
+            if (last != null)
+                return last.hasSideEffects();
+            else
+                return true;
+
+          case Token.HOOK:
+            if (first == null ||
+                first.next == null ||
+                first.next.next == null)
+                Kit.codeBug();
+            return first.next.hasSideEffects() &&
+                   first.next.next.hasSideEffects();
+
+          case Token.ERROR:         // Avoid cascaded error messages
+          case Token.EXPR_RESULT:
+          case Token.ASSIGN:
+          case Token.ASSIGN_ADD:
+          case Token.ASSIGN_SUB:
+          case Token.ASSIGN_MUL:
+          case Token.ASSIGN_DIV:
+          case Token.ASSIGN_MOD:
+          case Token.ASSIGN_BITOR:
+          case Token.ASSIGN_BITXOR:
+          case Token.ASSIGN_BITAND:
+          case Token.ASSIGN_LSH:
+          case Token.ASSIGN_RSH:
+          case Token.ASSIGN_URSH:
+          case Token.ENTERWITH:
+          case Token.LEAVEWITH:
+          case Token.RETURN:
+          case Token.GOTO:
+          case Token.IFEQ:
+          case Token.IFNE:
+          case Token.NEW:
+          case Token.DELPROP:
+          case Token.SETNAME:
+          case Token.SETPROP:
+          case Token.SETELEM:
+          case Token.CALL:
+          case Token.THROW:
+          case Token.RETHROW:
+          case Token.SETVAR:
+          case Token.CATCH_SCOPE:
+          case Token.RETURN_RESULT:
+          case Token.SET_REF:
+          case Token.DEL_REF:
+          case Token.REF_CALL:
+          case Token.TRY:
+          case Token.SEMI:
+          case Token.INC:
+          case Token.DEC:
+          case Token.EXPORT:
+          case Token.IMPORT:
+          case Token.IF:
+          case Token.ELSE:
+          case Token.SWITCH:
+          case Token.WHILE:
+          case Token.DO:
+          case Token.FOR:
+          case Token.BREAK:
+          case Token.CONTINUE:
+          case Token.VAR:
+          case Token.CONST:
+          case Token.LET:
+          case Token.LETEXPR:
+          case Token.WITH:
+          case Token.WITHEXPR:
+          case Token.CATCH:
+          case Token.FINALLY:
+          case Token.BLOCK:
+          case Token.LABEL:
+          case Token.TARGET:
+          case Token.LOOP:
+          case Token.JSR:
+          case Token.SETPROP_OP:
+          case Token.SETELEM_OP:
+          case Token.LOCAL_BLOCK:
+          case Token.SET_REF_OP:
+          case Token.YIELD:
+            return true;
+
+          default:
+            return false;
+        }
+    }
+
+    public String toString()
+    {
+        if (Token.printTrees) {
+            StringBuffer sb = new StringBuffer();
+            toString(new ObjToIntMap(), sb);
+            return sb.toString();
+        }
+        return String.valueOf(type);
+    }
+
+    private void toString(ObjToIntMap printIds, StringBuffer sb)
+    {
+        if (Token.printTrees) {
+            sb.append(Token.name(type));
+            if (this instanceof StringNode) {
+                sb.append(' ');
+                sb.append(getString());
+                Scope scope = getScope();
+                if (scope != null) {
+                    sb.append("[scope: ");
+                    appendPrintId(scope, printIds, sb);
+                    sb.append("]");
+                }
+            } else if (this instanceof Node.Scope) {
+                if (this instanceof ScriptOrFnNode) {
+                    ScriptOrFnNode sof = (ScriptOrFnNode)this;
+                    if (this instanceof FunctionNode) {
+                        FunctionNode fn = (FunctionNode)this;
+                        sb.append(' ');
+                        sb.append(fn.getFunctionName());
+                    }
+                    sb.append(" [source name: ");
+                    sb.append(sof.getSourceName());
+                    sb.append("] [encoded source length: ");
+                    sb.append(sof.getEncodedSourceEnd()
+                              - sof.getEncodedSourceStart());
+                    sb.append("] [base line: ");
+                    sb.append(sof.getBaseLineno());
+                    sb.append("] [end line: ");
+                    sb.append(sof.getEndLineno());
+                    sb.append(']');
+                }
+                if (((Node.Scope)this).symbolTable != null) {
+                    sb.append(" [scope ");
+                    appendPrintId(this, printIds, sb);
+                    sb.append(": ");
+                    Iterator iter = ((Node.Scope) this).symbolTable.keySet()
+                        .iterator();
+                    while (iter.hasNext()) {
+                        sb.append(iter.next());
+                        sb.append(" ");
+                    }
+                    sb.append("]");
+                }
+            } else if (this instanceof Jump) {
+                Jump jump = (Jump)this;
+                if (type == Token.BREAK || type == Token.CONTINUE) {
+                    sb.append(" [label: ");
+                    appendPrintId(jump.getJumpStatement(), printIds, sb);
+                    sb.append(']');
+                } else if (type == Token.TRY) {
+                    Node catchNode = jump.target;
+                    Node finallyTarget = jump.getFinally();
+                    if (catchNode != null) {
+                        sb.append(" [catch: ");
+                        appendPrintId(catchNode, printIds, sb);
+                        sb.append(']');
+                    }
+                    if (finallyTarget != null) {
+                        sb.append(" [finally: ");
+                        appendPrintId(finallyTarget, printIds, sb);
+                        sb.append(']');
+                    }
+                } else if (type == Token.LABEL || type == Token.LOOP
+                           || type == Token.SWITCH)
+                {
+                    sb.append(" [break: ");
+                    appendPrintId(jump.target, printIds, sb);
+                    sb.append(']');
+                    if (type == Token.LOOP) {
+                        sb.append(" [continue: ");
+                        appendPrintId(jump.getContinue(), printIds, sb);
+                        sb.append(']');
+                    }
+                } else {
+                    sb.append(" [target: ");
+                    appendPrintId(jump.target, printIds, sb);
+                    sb.append(']');
+                }
+            } else if (type == Token.NUMBER) {
+                sb.append(' ');
+                sb.append(getDouble());
+            } else if (type == Token.TARGET) {
+                sb.append(' ');
+                appendPrintId(this, printIds, sb);
+            }
+            if (lineno != -1) {
+                sb.append(' ');
+                sb.append(lineno);
+            }
+
+            for (PropListItem x = propListHead; x != null; x = x.next) {
+                int type = x.type;
+                sb.append(" [");
+                sb.append(propToString(type));
+                sb.append(": ");
+                String value;
+                switch (type) {
+                  case TARGETBLOCK_PROP : // can't add this as it recurses
+                    value = "target block property";
+                    break;
+                  case LOCAL_BLOCK_PROP :     // can't add this as it is dull
+                    value = "last local block";
+                    break;
+                  case ISNUMBER_PROP:
+                    switch (x.intValue) {
+                      case BOTH:
+                        value = "both";
+                        break;
+                      case RIGHT:
+                        value = "right";
+                        break;
+                      case LEFT:
+                        value = "left";
+                        break;
+                      default:
+                        throw Kit.codeBug();
+                    }
+                    break;
+                  case SPECIALCALL_PROP:
+                    switch (x.intValue) {
+                      case SPECIALCALL_EVAL:
+                        value = "eval";
+                        break;
+                      case SPECIALCALL_WITH:
+                        value = "with";
+                        break;
+                      default:
+                        // NON_SPECIALCALL should not be stored
+                        throw Kit.codeBug();
+                    }
+                    break;
+                  case OBJECT_IDS_PROP: {
+                    Object[] a = (Object[]) x.objectValue;
+                    value = "[";
+                    for (int i=0; i < a.length; i++) {
+                        value += a[i].toString();
+                        if (i+1 < a.length)
+                            value += ", ";
+                    }
+                    value += "]";
+                    break;
+                  }
+                  default :
+                    Object obj = x.objectValue;
+                    if (obj != null) {
+                        value = obj.toString();
+                    } else {
+                        value = String.valueOf(x.intValue);
+                    }
+                    break;
+                }
+                sb.append(value);
+                sb.append(']');
+            }
+        }
+    }
+
+    public String toStringTree(ScriptOrFnNode treeTop) {
+        if (Token.printTrees) {
+            StringBuffer sb = new StringBuffer();
+            toStringTreeHelper(treeTop, this, null, 0, sb);
+            return sb.toString();
+        }
+        return null;
+    }
+
+    private static void toStringTreeHelper(ScriptOrFnNode treeTop, Node n,
+                                           ObjToIntMap printIds,
+                                           int level, StringBuffer sb)
+    {
+        if (Token.printTrees) {
+            if (printIds == null) {
+                printIds = new ObjToIntMap();
+                generatePrintIds(treeTop, printIds);
+            }
+            for (int i = 0; i != level; ++i) {
+                sb.append("    ");
+            }
+            n.toString(printIds, sb);
+            sb.append('\n');
+            for (Node cursor = n.getFirstChild(); cursor != null;
+                 cursor = cursor.getNext())
+            {
+                if (cursor.getType() == Token.FUNCTION) {
+                    int fnIndex = cursor.getExistingIntProp(Node.FUNCTION_PROP);
+                    FunctionNode fn = treeTop.getFunctionNode(fnIndex);
+                    toStringTreeHelper(fn, fn, null, level + 1, sb);
+                } else {
+                    toStringTreeHelper(treeTop, cursor, printIds, level + 1, sb);
+                }
+            }
+        }
+    }
+
+    private static void generatePrintIds(Node n, ObjToIntMap map)
+    {
+        if (Token.printTrees) {
+            map.put(n, map.size());
+            for (Node cursor = n.getFirstChild(); cursor != null;
+                 cursor = cursor.getNext())
+            {
+                generatePrintIds(cursor, map);
+            }
+        }
+    }
+
+    private static void appendPrintId(Node n, ObjToIntMap printIds,
+                                      StringBuffer sb)
+    {
+        if (Token.printTrees) {
+            if (n != null) {
+                int id = printIds.get(n, -1);
+                sb.append('#');
+                if (id != -1) {
+                    sb.append(id + 1);
+                } else {
+                    sb.append("<not_available>");
+                }
+            }
+        }
+    }
+
+    int type;              // type of the node; Token.NAME for example
+    Node next;             // next sibling
+    private Node first;    // first element of a linked list of children
+    private Node last;     // last element of a linked list of children
+    protected int lineno = -1;
+
+    /*APPJET*/public int statementEndLineNum = -1;
+    
+    /**
+     * Linked list of properties. Since vast majority of nodes would have
+     * no more then 2 properties, linked list saves memory and provides
+     * fast lookup. If this does not holds, propListHead can be replaced
+     * by UintMap.
+     */
+    private PropListItem propListHead;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NodeTransformer.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NodeTransformer.java
new file mode 100644
index 0000000..201c6f2
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NodeTransformer.java
@@ -0,0 +1,565 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Roger Lawrence
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This class transforms a tree to a lower-level representation for codegen.
+ *
+ * @see Node
+ * @author Norris Boyd
+ */
+
+public class NodeTransformer
+{
+
+    public NodeTransformer()
+    {
+    }
+
+    public final void transform(ScriptOrFnNode tree)
+    {
+        transformCompilationUnit(tree);
+        for (int i = 0; i != tree.getFunctionCount(); ++i) {
+            FunctionNode fn = tree.getFunctionNode(i);
+            transform(fn);
+        }
+    }
+
+    private void transformCompilationUnit(ScriptOrFnNode tree)
+    {
+        loops = new ObjArray();
+        loopEnds = new ObjArray();
+
+        // to save against upchecks if no finally blocks are used.
+        hasFinally = false;
+
+        // Flatten all only if we are not using scope objects for block scope
+        boolean createScopeObjects = tree.getType() != Token.FUNCTION ||
+                                  ((FunctionNode)tree).requiresActivation();
+        tree.flattenSymbolTable(!createScopeObjects);
+
+        //uncomment to print tree before transformation
+        //if (Token.printTrees) System.out.println(tree.toStringTree(tree));
+        transformCompilationUnit_r(tree, tree, tree, createScopeObjects);
+    }
+
+    private void transformCompilationUnit_r(final ScriptOrFnNode tree,
+                                            final Node parent,
+                                            Node.Scope scope,
+                                            boolean createScopeObjects)
+    {
+        Node node = null;
+      siblingLoop:
+        for (;;) {
+            Node previous = null;
+            if (node == null) {
+                node = parent.getFirstChild();
+            } else {
+                previous = node;
+                node = node.getNext();
+            }
+            if (node == null) {
+                break;
+            }
+
+            int type = node.getType();
+            if (createScopeObjects &&
+                (type == Token.BLOCK || type == Token.LOOP ||
+                 type == Token.ARRAYCOMP) &&
+                (node instanceof Node.Scope))
+            {
+                Node.Scope newScope = (Node.Scope) node;
+                if (newScope.symbolTable != null) {
+                    // transform to let statement so we get a with statement
+                    // created to contain scoped let variables
+                    Node let = new Node(type == Token.ARRAYCOMP ? Token.LETEXPR
+                                                                : Token.LET);
+                    Node innerLet = new Node(Token.LET);
+                    let.addChildToBack(innerLet);
+                    for (String name: newScope.symbolTable.keySet()) {
+                        innerLet.addChildToBack(Node.newString(Token.NAME, name));
+                    }
+                    newScope.symbolTable = null; // so we don't transform again
+                    Node oldNode = node;
+                    node = replaceCurrent(parent, previous, node, let);
+                    type = node.getType();
+                    let.addChildToBack(oldNode);
+                }
+            }
+            
+            switch (type) {
+
+              case Token.LABEL:
+              case Token.SWITCH:
+              case Token.LOOP:
+                loops.push(node);
+                loopEnds.push(((Node.Jump)node).target);
+                break;
+
+              case Token.WITH:
+              {
+                loops.push(node);
+                Node leave = node.getNext();
+                if (leave.getType() != Token.LEAVEWITH) {
+                    Kit.codeBug();
+                }
+                loopEnds.push(leave);
+                break;
+              }
+
+              case Token.TRY:
+              {
+                Node.Jump jump = (Node.Jump)node;
+                Node finallytarget = jump.getFinally();
+                if (finallytarget != null) {
+                    hasFinally = true;
+                    loops.push(node);
+                    loopEnds.push(finallytarget);
+                }
+                break;
+              }
+
+              case Token.TARGET:
+              case Token.LEAVEWITH:
+                if (!loopEnds.isEmpty() && loopEnds.peek() == node) {
+                    loopEnds.pop();
+                    loops.pop();
+                }
+                break;
+
+              case Token.YIELD:
+                ((FunctionNode)tree).addResumptionPoint(node);
+                break;
+
+              case Token.RETURN:
+              {
+                boolean isGenerator = tree.getType() == Token.FUNCTION
+                    && ((FunctionNode)tree).isGenerator();
+                if (isGenerator) {
+                    node.putIntProp(Node.GENERATOR_END_PROP, 1);
+                }
+                /* If we didn't support try/finally, it wouldn't be
+                 * necessary to put LEAVEWITH nodes here... but as
+                 * we do need a series of JSR FINALLY nodes before
+                 * each RETURN, we need to ensure that each finally
+                 * block gets the correct scope... which could mean
+                 * that some LEAVEWITH nodes are necessary.
+                 */
+                if (!hasFinally)
+                    break;     // skip the whole mess.
+                Node unwindBlock = null;
+                for (int i=loops.size()-1; i >= 0; i--) {
+                    Node n = (Node) loops.get(i);
+                    int elemtype = n.getType();
+                    if (elemtype == Token.TRY || elemtype == Token.WITH) {
+                        Node unwind;
+                        if (elemtype == Token.TRY) {
+                            Node.Jump jsrnode = new Node.Jump(Token.JSR);
+                            Node jsrtarget = ((Node.Jump)n).getFinally();
+                            jsrnode.target = jsrtarget;
+                            unwind = jsrnode;
+                        } else {
+                            unwind = new Node(Token.LEAVEWITH);
+                        }
+                        if (unwindBlock == null) {
+                            unwindBlock = new Node(Token.BLOCK,
+                                                   node.getLineno());
+                        }
+                        unwindBlock.addChildToBack(unwind);
+                    }
+                }
+                if (unwindBlock != null) {
+                    Node returnNode = node;
+                    Node returnExpr = returnNode.getFirstChild();
+                    node = replaceCurrent(parent, previous, node, unwindBlock);
+                    if (returnExpr == null || isGenerator) {
+                        unwindBlock.addChildToBack(returnNode);
+                    } else {
+                        Node store = new Node(Token.EXPR_RESULT, returnExpr);
+                        unwindBlock.addChildToFront(store);
+                        returnNode = new Node(Token.RETURN_RESULT);
+                        unwindBlock.addChildToBack(returnNode);
+                        // transform return expression
+                        transformCompilationUnit_r(tree, store, scope, 
+                                                   createScopeObjects);
+                    }
+                    // skip transformCompilationUnit_r to avoid infinite loop
+                    continue siblingLoop;
+                }
+                break;
+              }
+
+              case Token.BREAK:
+              case Token.CONTINUE:
+              {
+                Node.Jump jump = (Node.Jump)node;
+                Node.Jump jumpStatement = jump.getJumpStatement();
+                if (jumpStatement == null) Kit.codeBug();
+
+                for (int i = loops.size(); ;) {
+                    if (i == 0) {
+                        // Parser/IRFactory ensure that break/continue
+                        // always has a jump statement associated with it
+                        // which should be found
+                        throw Kit.codeBug();
+                    }
+                    --i;
+                    Node n = (Node) loops.get(i);
+                    if (n == jumpStatement) {
+                        break;
+                    }
+
+                    int elemtype = n.getType();
+                    if (elemtype == Token.WITH) {
+                        Node leave = new Node(Token.LEAVEWITH);
+                        previous = addBeforeCurrent(parent, previous, node,
+                                                    leave);
+                    } else if (elemtype == Token.TRY) {
+                        Node.Jump tryNode = (Node.Jump)n;
+                        Node.Jump jsrFinally = new Node.Jump(Token.JSR);
+                        jsrFinally.target = tryNode.getFinally();
+                        previous = addBeforeCurrent(parent, previous, node,
+                                                    jsrFinally);
+                    }
+                }
+
+                if (type == Token.BREAK) {
+                    jump.target = jumpStatement.target;
+                } else {
+                    jump.target = jumpStatement.getContinue();
+                }
+                jump.setType(Token.GOTO);
+
+                break;
+              }
+
+              case Token.CALL:
+                visitCall(node, tree);
+                break;
+
+              case Token.NEW:
+                visitNew(node, tree);
+                break;
+
+              case Token.LETEXPR:
+              case Token.LET: {
+                Node child = node.getFirstChild();
+                if (child.getType() == Token.LET) {
+                  // We have a let statement or expression rather than a
+                  // let declaration
+                  boolean createWith = tree.getType() != Token.FUNCTION
+                      || ((FunctionNode)tree).requiresActivation();
+                  node = visitLet(createWith, parent, previous, node);
+                  break;
+                } else {
+                  // fall through to process let declaration...
+                }
+              }
+              /* fall through */
+              case Token.CONST:
+              case Token.VAR:
+              {
+                Node result = new Node(Token.BLOCK);
+                for (Node cursor = node.getFirstChild(); cursor != null;) {
+                    // Move cursor to next before createAssignment gets chance
+                    // to change n.next
+                    Node n = cursor;
+                    cursor = cursor.getNext();
+                    if (n.getType() == Token.NAME) {
+                        if (!n.hasChildren())
+                            continue;
+                        Node init = n.getFirstChild();
+                        n.removeChild(init);
+                        n.setType(Token.BINDNAME);
+                        n = new Node(type == Token.CONST ?
+                                         Token.SETCONST :
+                                         Token.SETNAME,
+                                     n, init);
+                    } else {
+                        // May be a destructuring assignment already transformed
+                        // to a LETEXPR
+                        if (n.getType() != Token.LETEXPR)
+                            throw Kit.codeBug();
+                    }
+                    Node pop = new Node(Token.EXPR_VOID, n, node.getLineno());
+                    result.addChildToBack(pop);
+                }
+                node = replaceCurrent(parent, previous, node, result);
+                break;
+              }
+
+              case Token.TYPEOFNAME: {
+                Node.Scope defining = scope.getDefiningScope(node.getString());
+                if (defining != null) {
+                    node.setScope(defining);
+                }
+              }
+              break;
+
+              case Token.TYPEOF:
+              case Token.IFNE: {
+                  /* We want to suppress warnings for undefined property o.p
+                   * for the following constructs: typeof o.p, if (o.p), 
+                   * if (!o.p), if (o.p == undefined), if (undefined == o.p)
+                   */
+            	  Node child = node.getFirstChild();
+            	  if (type == Token.IFNE) {
+                	  while (child.getType() == Token.NOT) {
+                	      child = child.getFirstChild();
+                	  }
+                	  if (child.getType() == Token.EQ ||
+                	      child.getType() == Token.NE)
+                	  {
+                	      Node first = child.getFirstChild();
+                	      Node last = child.getLastChild();
+                	      if (first.getType() == Token.NAME &&
+                	          first.getString().equals("undefined"))
+                	          child = last;
+                	      else if (last.getType() == Token.NAME &&
+                	               last.getString().equals("undefined"))
+                              child = first;
+                	  }
+            	  }
+            	  if (child.getType() == Token.GETPROP)
+            		  child.setType(Token.GETPROPNOWARN);
+            	  break;
+              }
+
+              case Token.NAME:
+              case Token.SETNAME:
+              case Token.SETCONST:
+              case Token.DELPROP:
+              {
+                // Turn name to var for faster access if possible
+                if (createScopeObjects) {
+                    break;
+                }
+                Node nameSource;
+                if (type == Token.NAME) {
+                    nameSource = node;
+                } else {
+                    nameSource = node.getFirstChild();
+                    if (nameSource.getType() != Token.BINDNAME) {
+                        if (type == Token.DELPROP) {
+                            break;
+                        }
+                        throw Kit.codeBug();
+                    }
+                }
+                if (nameSource.getScope() != null) {
+                    break; // already have a scope set
+                }
+                String name = nameSource.getString();
+                Node.Scope defining = scope.getDefiningScope(name);
+                if (defining != null) {
+                    nameSource.setScope(defining);
+                    if (type == Token.NAME) {
+                        node.setType(Token.GETVAR);
+                    } else if (type == Token.SETNAME) {
+                        node.setType(Token.SETVAR);
+                        nameSource.setType(Token.STRING);
+                    } else if (type == Token.SETCONST) {
+                        node.setType(Token.SETCONSTVAR);
+                        nameSource.setType(Token.STRING);
+                    } else if (type == Token.DELPROP) {
+                        // Local variables are by definition permanent
+                        Node n = new Node(Token.FALSE);
+                        node = replaceCurrent(parent, previous, node, n);
+                    } else {
+                        throw Kit.codeBug();
+                    }
+                }
+                break;
+              }
+            }
+
+            transformCompilationUnit_r(tree, node, 
+                node instanceof Node.Scope ? (Node.Scope)node : scope,
+                createScopeObjects);
+        }
+    }
+
+    protected void visitNew(Node node, ScriptOrFnNode tree) {
+    }
+
+    protected void visitCall(Node node, ScriptOrFnNode tree) {
+    }
+    
+    protected Node visitLet(boolean createWith, Node parent, Node previous, 
+                            Node scopeNode)
+    {
+        Node vars = scopeNode.getFirstChild();
+        Node body = vars.getNext();
+        scopeNode.removeChild(vars);
+        scopeNode.removeChild(body);
+        boolean isExpression = scopeNode.getType() == Token.LETEXPR;
+        Node result;
+        Node newVars;
+        if (createWith) {
+            result = new Node(isExpression ? Token.WITHEXPR : Token.BLOCK);
+            result = replaceCurrent(parent, previous, scopeNode, result);
+            ArrayList<Object> list = new ArrayList<Object>();
+            Node objectLiteral = new Node(Token.OBJECTLIT);
+            for (Node v=vars.getFirstChild(); v != null; v = v.getNext()) {
+                Node current = v;
+                if (current.getType() == Token.LETEXPR) {
+                    // destructuring in let expr, e.g. let ([x, y] = [3, 4]) {}
+                    List<?> destructuringNames = (List<?>)
+                        current.getProp(Node.DESTRUCTURING_NAMES);
+                    Node c = current.getFirstChild();
+                    if (c.getType() != Token.LET) throw Kit.codeBug();
+                    // Add initialization code to front of body
+                    if (isExpression) {
+                        body = new Node(Token.COMMA, c.getNext(), body);
+                    } else {
+                        body = new Node(Token.BLOCK,
+                            new Node(Token.EXPR_VOID, c.getNext()),
+                            body);
+                    }
+                    // Update "list" and "objectLiteral" for the variables
+                    // defined in the destructuring assignment
+                    if (destructuringNames != null) {
+                        list.addAll(destructuringNames);
+                        for (int i=0; i < destructuringNames.size(); i++) {
+                            objectLiteral.addChildToBack(
+                                new Node(Token.VOID, Node.newNumber(0.0)));
+                        }
+                    }
+                    current = c.getFirstChild(); // should be a NAME, checked below
+                }
+                if (current.getType() != Token.NAME) throw Kit.codeBug();
+                list.add(ScriptRuntime.getIndexObject(current.getString()));
+                Node init = current.getFirstChild();
+                if (init == null) {
+                    init = new Node(Token.VOID, Node.newNumber(0.0));
+                }
+                objectLiteral.addChildToBack(init);
+             }
+             objectLiteral.putProp(Node.OBJECT_IDS_PROP, list.toArray());
+             newVars = new Node(Token.ENTERWITH, objectLiteral);
+             result.addChildToBack(newVars);
+             result.addChildToBack(new Node(Token.WITH, body));
+             result.addChildToBack(new Node(Token.LEAVEWITH));
+        } else {
+            result = new Node(isExpression ? Token.COMMA : Token.BLOCK);
+            result = replaceCurrent(parent, previous, scopeNode, result);
+            newVars = new Node(Token.COMMA);
+            for (Node v=vars.getFirstChild(); v != null; v = v.getNext()) {
+                Node current = v;
+                if (current.getType() == Token.LETEXPR) {
+                    // destructuring in let expr, e.g. let ([x, y] = [3, 4]) {}
+                    Node c = current.getFirstChild();
+                    if (c.getType() != Token.LET) throw Kit.codeBug();
+                    // Add initialization code to front of body
+                    if (isExpression) {
+                        body = new Node(Token.COMMA, c.getNext(), body);
+                    } else {
+                        body = new Node(Token.BLOCK,
+                            new Node(Token.EXPR_VOID, c.getNext()),
+                            body);
+                    }
+                    // We're removing the LETEXPR, so move the symbols
+                    Node.Scope.joinScopes((Node.Scope)current,
+                                          (Node.Scope)scopeNode);
+                    current = c.getFirstChild(); // should be a NAME, checked below
+                }
+                if (current.getType() != Token.NAME) throw Kit.codeBug();
+                Node stringNode = Node.newString(current.getString());
+                stringNode.setScope((Node.Scope)scopeNode);
+                Node init = current.getFirstChild();
+                if (init == null) {
+                    init = new Node(Token.VOID, Node.newNumber(0.0));
+                }
+                newVars.addChildToBack(new Node(Token.SETVAR, stringNode, init));
+            }
+            if (isExpression) {
+                result.addChildToBack(newVars);
+                scopeNode.setType(Token.COMMA);
+                result.addChildToBack(scopeNode);
+                scopeNode.addChildToBack(body);
+            } else {
+                result.addChildToBack(new Node(Token.EXPR_VOID, newVars));
+                scopeNode.setType(Token.BLOCK);
+                result.addChildToBack(scopeNode);
+                scopeNode.addChildrenToBack(body);
+            }
+        }
+        return result;
+    }
+
+    private static Node addBeforeCurrent(Node parent, Node previous,
+                                         Node current, Node toAdd)
+    {
+        if (previous == null) {
+            if (!(current == parent.getFirstChild())) Kit.codeBug();
+            parent.addChildToFront(toAdd);
+        } else {
+            if (!(current == previous.getNext())) Kit.codeBug();
+            parent.addChildAfter(toAdd, previous);
+        }
+        return toAdd;
+    }
+
+    private static Node replaceCurrent(Node parent, Node previous,
+                                       Node current, Node replacement)
+    {
+        if (previous == null) {
+            if (!(current == parent.getFirstChild())) Kit.codeBug();
+            parent.replaceChild(current, replacement);
+        } else if (previous.next == current) {
+            // Check cachedPrev.next == current is necessary due to possible
+            // tree mutations
+            parent.replaceChildAfter(previous, replacement);
+        } else {
+            parent.replaceChild(current, replacement);
+        }
+        return replacement;
+    }
+
+    private ObjArray loops;
+    private ObjArray loopEnds;
+    private boolean hasFinally;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java
new file mode 100644
index 0000000..a9636a3
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java
@@ -0,0 +1,388 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+
+/**
+Implementation of resizable array with focus on minimizing memory usage by storing few initial array elements in object fields. Can also be used as a stack.
+*/
+
+public class ObjArray implements Serializable
+{
+    static final long serialVersionUID = 4174889037736658296L;
+
+    public ObjArray() { }
+
+    public final boolean isSealed()
+    {
+        return sealed;
+    }
+
+    public final void seal()
+    {
+        sealed = true;
+    }
+
+    public final boolean isEmpty()
+    {
+        return size == 0;
+    }
+
+    public final int size()
+    {
+        return size;
+    }
+
+    public final void setSize(int newSize)
+    {
+        if (newSize < 0) throw new IllegalArgumentException();
+        if (sealed) throw onSeledMutation();
+        int N = size;
+        if (newSize < N) {
+            for (int i = newSize; i != N; ++i) {
+                setImpl(i, null);
+            }
+        } else if (newSize > N) {
+            if (newSize > FIELDS_STORE_SIZE) {
+                ensureCapacity(newSize);
+            }
+        }
+        size = newSize;
+    }
+
+    public final Object get(int index)
+    {
+        if (!(0 <= index && index < size)) throw onInvalidIndex(index, size);
+        return getImpl(index);
+    }
+
+    public final void set(int index, Object value)
+    {
+        if (!(0 <= index && index < size)) throw onInvalidIndex(index, size);
+        if (sealed) throw onSeledMutation();
+        setImpl(index, value);
+    }
+
+    private Object getImpl(int index)
+    {
+        switch (index) {
+            case 0: return f0;
+            case 1: return f1;
+            case 2: return f2;
+            case 3: return f3;
+            case 4: return f4;
+        }
+        return data[index - FIELDS_STORE_SIZE];
+    }
+
+    private void setImpl(int index, Object value)
+    {
+        switch (index) {
+            case 0: f0 = value; break;
+            case 1: f1 = value; break;
+            case 2: f2 = value; break;
+            case 3: f3 = value; break;
+            case 4: f4 = value; break;
+            default: data[index - FIELDS_STORE_SIZE] = value;
+        }
+
+    }
+
+    public int indexOf(Object obj)
+    {
+        int N = size;
+        for (int i = 0; i != N; ++i) {
+            Object current = getImpl(i);
+            if (current == obj || (current != null && current.equals(obj))) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    public int lastIndexOf(Object obj)
+    {
+        for (int i = size; i != 0;) {
+            --i;
+            Object current = getImpl(i);
+            if (current == obj || (current != null && current.equals(obj))) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    public final Object peek()
+    {
+        int N = size;
+        if (N == 0) throw onEmptyStackTopRead();
+        return getImpl(N - 1);
+    }
+
+    public final Object pop()
+    {
+        if (sealed) throw onSeledMutation();
+        int N = size;
+        --N;
+        Object top;
+        switch (N) {
+            case -1: throw onEmptyStackTopRead();
+            case 0: top = f0; f0 = null; break;
+            case 1: top = f1; f1 = null; break;
+            case 2: top = f2; f2 = null; break;
+            case 3: top = f3; f3 = null; break;
+            case 4: top = f4; f4 = null; break;
+            default:
+                top = data[N - FIELDS_STORE_SIZE];
+                data[N - FIELDS_STORE_SIZE] = null;
+        }
+        size = N;
+        return top;
+    }
+
+    public final void push(Object value)
+    {
+        add(value);
+    }
+
+    public final void add(Object value)
+    {
+        if (sealed) throw onSeledMutation();
+        int N = size;
+        if (N >= FIELDS_STORE_SIZE) {
+            ensureCapacity(N + 1);
+        }
+        size = N + 1;
+        setImpl(N, value);
+    }
+
+    public final void add(int index, Object value)
+    {
+        int N = size;
+        if (!(0 <= index && index <= N)) throw onInvalidIndex(index, N + 1);
+        if (sealed) throw onSeledMutation();
+        Object tmp;
+        switch (index) {
+            case 0:
+                if (N == 0) { f0 = value; break; }
+                tmp = f0; f0 = value; value = tmp;
+            case 1:
+                if (N == 1) { f1 = value; break; }
+                tmp = f1; f1 = value; value = tmp;
+            case 2:
+                if (N == 2) { f2 = value; break; }
+                tmp = f2; f2 = value; value = tmp;
+            case 3:
+                if (N == 3) { f3 = value; break; }
+                tmp = f3; f3 = value; value = tmp;
+            case 4:
+                if (N == 4) { f4 = value; break; }
+                tmp = f4; f4 = value; value = tmp;
+
+                index = FIELDS_STORE_SIZE;
+            default:
+                ensureCapacity(N + 1);
+                if (index != N) {
+                    System.arraycopy(data, index - FIELDS_STORE_SIZE,
+                                     data, index - FIELDS_STORE_SIZE + 1,
+                                     N - index);
+                }
+                data[index - FIELDS_STORE_SIZE] = value;
+        }
+        size = N + 1;
+    }
+
+    public final void remove(int index)
+    {
+        int N = size;
+        if (!(0 <= index && index < N)) throw onInvalidIndex(index, N);
+        if (sealed) throw onSeledMutation();
+        --N;
+        switch (index) {
+            case 0:
+                if (N == 0) { f0 = null; break; }
+                f0 = f1;
+            case 1:
+                if (N == 1) { f1 = null; break; }
+                f1 = f2;
+            case 2:
+                if (N == 2) { f2 = null; break; }
+                f2 = f3;
+            case 3:
+                if (N == 3) { f3 = null; break; }
+                f3 = f4;
+            case 4:
+                if (N == 4) { f4 = null; break; }
+                f4 = data[0];
+
+                index = FIELDS_STORE_SIZE;
+            default:
+                if (index != N) {
+                    System.arraycopy(data, index - FIELDS_STORE_SIZE + 1,
+                                     data, index - FIELDS_STORE_SIZE,
+                                     N - index);
+                }
+                data[N - FIELDS_STORE_SIZE] = null;
+        }
+        size = N;
+    }
+
+    public final void clear()
+    {
+        if (sealed) throw onSeledMutation();
+        int N = size;
+        for (int i = 0; i != N; ++i) {
+            setImpl(i, null);
+        }
+        size = 0;
+    }
+
+    public final Object[] toArray()
+    {
+        Object[] array = new Object[size];
+        toArray(array, 0);
+        return array;
+    }
+
+    public final void toArray(Object[] array)
+    {
+        toArray(array, 0);
+    }
+
+    public final void toArray(Object[] array, int offset)
+    {
+        int N = size;
+        switch (N) {
+            default:
+                System.arraycopy(data, 0, array, offset + FIELDS_STORE_SIZE,
+                                 N - FIELDS_STORE_SIZE);
+            case 5: array[offset + 4] = f4;
+            case 4: array[offset + 3] = f3;
+            case 3: array[offset + 2] = f2;
+            case 2: array[offset + 1] = f1;
+            case 1: array[offset + 0] = f0;
+            case 0: break;
+        }
+    }
+
+    private void ensureCapacity(int minimalCapacity)
+    {
+        int required = minimalCapacity - FIELDS_STORE_SIZE;
+        if (required <= 0) throw new IllegalArgumentException();
+        if (data == null) {
+            int alloc = FIELDS_STORE_SIZE * 2;
+            if (alloc < required) {
+                alloc = required;
+            }
+            data = new Object[alloc];
+        } else {
+            int alloc = data.length;
+            if (alloc < required) {
+                   if (alloc <= FIELDS_STORE_SIZE) {
+                    alloc = FIELDS_STORE_SIZE * 2;
+                } else {
+                    alloc *= 2;
+                }
+                if (alloc < required) {
+                    alloc = required;
+                }
+                Object[] tmp = new Object[alloc];
+                if (size > FIELDS_STORE_SIZE) {
+                    System.arraycopy(data, 0, tmp, 0,
+                                     size - FIELDS_STORE_SIZE);
+                }
+                data = tmp;
+            }
+        }
+    }
+
+    private static RuntimeException onInvalidIndex(int index, int upperBound)
+    {
+        // \u2209 is "NOT ELEMENT OF"
+        String msg = index+" \u2209 [0, "+upperBound+')';
+        throw new IndexOutOfBoundsException(msg);
+    }
+
+    private static RuntimeException onEmptyStackTopRead()
+    {
+        throw new RuntimeException("Empty stack");
+    }
+
+    private static RuntimeException onSeledMutation()
+    {
+        throw new IllegalStateException("Attempt to modify sealed array");
+    }
+
+    private void writeObject(ObjectOutputStream os) throws IOException
+    {
+        os.defaultWriteObject();
+        int N = size;
+        for (int i = 0; i != N; ++i) {
+            Object obj = getImpl(i);
+            os.writeObject(obj);
+        }
+    }
+
+    private void readObject(ObjectInputStream is)
+        throws IOException, ClassNotFoundException
+    {
+        is.defaultReadObject(); // It reads size
+        int N = size;
+        if (N > FIELDS_STORE_SIZE) {
+            data = new Object[N - FIELDS_STORE_SIZE];
+        }
+        for (int i = 0; i != N; ++i) {
+            Object obj = is.readObject();
+            setImpl(i, obj);
+        }
+    }
+
+// Number of data elements
+    private int size;
+
+    private boolean sealed;
+
+    private static final int FIELDS_STORE_SIZE = 5;
+    private transient Object f0, f1, f2, f3, f4;
+    private transient Object[] data;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjToIntMap.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjToIntMap.java
new file mode 100644
index 0000000..4aa7d23
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjToIntMap.java
@@ -0,0 +1,697 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+
+/**
+ * Map to associate objects to integers.
+ * The map does not synchronize any of its operation, so either use
+ * it from a single thread or do own synchronization or perform all mutation
+ * operations on one thread before passing the map to others
+ *
+ * @author Igor Bukanov
+ *
+ */
+
+public class ObjToIntMap implements Serializable
+{
+    static final long serialVersionUID = -1542220580748809402L;
+
+// Map implementation via hashtable,
+// follows "The Art of Computer Programming" by Donald E. Knuth
+
+// ObjToIntMap is a copy cat of ObjToIntMap with API adjusted to object keys
+
+    public static class Iterator {
+
+        Iterator(ObjToIntMap master) {
+            this.master = master;
+        }
+
+        final void init(Object[] keys, int[] values, int keyCount) {
+            this.keys = keys;
+            this.values = values;
+            this.cursor = -1;
+            this.remaining = keyCount;
+        }
+
+        public void start() {
+            master.initIterator(this);
+            next();
+        }
+
+        public boolean done() {
+            return remaining < 0;
+        }
+
+        public void next() {
+            if (remaining == -1) Kit.codeBug();
+            if (remaining == 0) {
+                remaining = -1;
+                cursor = -1;
+            }else {
+                for (++cursor; ; ++cursor) {
+                    Object key = keys[cursor];
+                    if (key != null && key != DELETED) {
+                        --remaining;
+                        break;
+                    }
+                }
+            }
+        }
+
+        public Object getKey() {
+            Object key = keys[cursor];
+            if (key == UniqueTag.NULL_VALUE) { key = null; }
+            return key;
+        }
+
+        public int getValue() {
+            return values[cursor];
+        }
+
+        public void setValue(int value) {
+            values[cursor] = value;
+        }
+
+        ObjToIntMap master;
+        private int cursor;
+        private int remaining;
+        private Object[] keys;
+        private int[] values;
+    }
+
+    public ObjToIntMap() {
+        this(4);
+    }
+
+    public ObjToIntMap(int keyCountHint) {
+        if (keyCountHint < 0) Kit.codeBug();
+        // Table grow when number of stored keys >= 3/4 of max capacity
+        int minimalCapacity = keyCountHint * 4 / 3;
+        int i;
+        for (i = 2; (1 << i) < minimalCapacity; ++i) { }
+        power = i;
+        if (check && power < 2) Kit.codeBug();
+    }
+
+    public boolean isEmpty() {
+        return keyCount == 0;
+    }
+
+    public int size() {
+        return keyCount;
+    }
+
+    public boolean has(Object key) {
+        if (key == null) { key = UniqueTag.NULL_VALUE; }
+        return 0 <= findIndex(key);
+    }
+
+    /**
+     * Get integer value assigned with key.
+     * @return key integer value or defaultValue if key is absent
+     */
+    public int get(Object key, int defaultValue) {
+        if (key == null) { key = UniqueTag.NULL_VALUE; }
+        int index = findIndex(key);
+        if (0 <= index) {
+            return values[index];
+        }
+        return defaultValue;
+    }
+
+    /**
+     * Get integer value assigned with key.
+     * @return key integer value
+     * @throws RuntimeException if key does not exist
+     */
+    public int getExisting(Object key) {
+        if (key == null) { key = UniqueTag.NULL_VALUE; }
+        int index = findIndex(key);
+        if (0 <= index) {
+            return values[index];
+        }
+        // Key must exist
+        Kit.codeBug();
+        return 0;
+    }
+
+    public void put(Object key, int value) {
+        if (key == null) { key = UniqueTag.NULL_VALUE; }
+        int index = ensureIndex(key);
+        values[index] = value;
+    }
+
+    /**
+     * If table already contains a key that equals to keyArg, return that key
+     * while setting its value to zero, otherwise add keyArg with 0 value to
+     * the table and return it.
+     */
+    public Object intern(Object keyArg) {
+        boolean nullKey = false;
+        if (keyArg == null) {
+            nullKey = true;
+            keyArg = UniqueTag.NULL_VALUE;
+        }
+        int index = ensureIndex(keyArg);
+        values[index] = 0;
+        return (nullKey) ? null : keys[index];
+    }
+
+    public void remove(Object key) {
+        if (key == null) { key = UniqueTag.NULL_VALUE; }
+        int index = findIndex(key);
+        if (0 <= index) {
+            keys[index] = DELETED;
+            --keyCount;
+        }
+    }
+
+    public void clear() {
+        int i = keys.length;
+        while (i != 0) {
+            keys[--i] = null;
+        }
+        keyCount = 0;
+        occupiedCount = 0;
+    }
+
+    public Iterator newIterator() {
+        return new Iterator(this);
+    }
+
+    // The sole purpose of the method is to avoid accessing private fields
+    // from the Iterator inner class to workaround JDK 1.1 compiler bug which
+    // generates code triggering VerifierError on recent JVMs
+    final void initIterator(Iterator i) {
+        i.init(keys, values, keyCount);
+    }
+
+    /** Return array of present keys */
+    public Object[] getKeys() {
+        Object[] array = new Object[keyCount];
+        getKeys(array, 0);
+        return array;
+    }
+
+    public void getKeys(Object[] array, int offset) {
+        int count = keyCount;
+        for (int i = 0; count != 0; ++i) {
+            Object key = keys[i];
+            if (key != null && key != DELETED) {
+                if (key == UniqueTag.NULL_VALUE) { key = null; }
+                array[offset] = key;
+                ++offset;
+                --count;
+            }
+        }
+    }
+
+    private static int tableLookupStep(int fraction, int mask, int power) {
+        int shift = 32 - 2 * power;
+        if (shift >= 0) {
+            return ((fraction >>> shift) & mask) | 1;
+        }
+        else {
+            return (fraction & (mask >>> -shift)) | 1;
+        }
+    }
+
+    private int findIndex(Object key) {
+        if (keys != null) {
+            int hash = key.hashCode();
+            int fraction = hash * A;
+            int index = fraction >>> (32 - power);
+            Object test = keys[index];
+            if (test != null) {
+                int N = 1 << power;
+                if (test == key
+                    || (values[N + index] == hash && test.equals(key)))
+                {
+                    return index;
+                }
+                // Search in table after first failed attempt
+                int mask = N - 1;
+                int step = tableLookupStep(fraction, mask, power);
+                int n = 0;
+                for (;;) {
+                    if (check) {
+                        if (n >= occupiedCount) Kit.codeBug();
+                        ++n;
+                    }
+                    index = (index + step) & mask;
+                    test = keys[index];
+                    if (test == null) {
+                        break;
+                    }
+                    if (test == key
+                        || (values[N + index] == hash && test.equals(key)))
+                    {
+                        return index;
+                    }
+                }
+            }
+        }
+        return -1;
+    }
+
+// Insert key that is not present to table without deleted entries
+// and enough free space
+    private int insertNewKey(Object key, int hash) {
+        if (check && occupiedCount != keyCount) Kit.codeBug();
+        if (check && keyCount == 1 << power) Kit.codeBug();
+        int fraction = hash * A;
+        int index = fraction >>> (32 - power);
+        int N = 1 << power;
+        if (keys[index] != null) {
+            int mask = N - 1;
+            int step = tableLookupStep(fraction, mask, power);
+            int firstIndex = index;
+            do {
+                if (check && keys[index] == DELETED) Kit.codeBug();
+                index = (index + step) & mask;
+                if (check && firstIndex == index) Kit.codeBug();
+            } while (keys[index] != null);
+        }
+        keys[index] = key;
+        values[N + index] = hash;
+        ++occupiedCount;
+        ++keyCount;
+
+        return index;
+    }
+
+    private void rehashTable() {
+        if (keys == null) {
+            if (check && keyCount != 0) Kit.codeBug();
+            if (check && occupiedCount != 0) Kit.codeBug();
+            int N = 1 << power;
+            keys = new Object[N];
+            values = new int[2 * N];
+        }
+        else {
+            // Check if removing deleted entries would free enough space
+            if (keyCount * 2 >= occupiedCount) {
+                // Need to grow: less then half of deleted entries
+                ++power;
+            }
+            int N = 1 << power;
+            Object[] oldKeys = keys;
+            int[] oldValues = values;
+            int oldN = oldKeys.length;
+            keys = new Object[N];
+            values = new int[2 * N];
+
+            int remaining = keyCount;
+            occupiedCount = keyCount = 0;
+            for (int i = 0; remaining != 0; ++i) {
+                Object key = oldKeys[i];
+                if (key != null && key != DELETED) {
+                    int keyHash = oldValues[oldN + i];
+                    int index = insertNewKey(key, keyHash);
+                    values[index] = oldValues[i];
+                    --remaining;
+                }
+            }
+        }
+    }
+
+// Ensure key index creating one if necessary
+    private int ensureIndex(Object key) {
+        int hash = key.hashCode();
+        int index = -1;
+        int firstDeleted = -1;
+        if (keys != null) {
+            int fraction = hash * A;
+            index = fraction >>> (32 - power);
+            Object test = keys[index];
+            if (test != null) {
+                int N = 1 << power;
+                if (test == key
+                    || (values[N + index] == hash && test.equals(key)))
+                {
+                    return index;
+                }
+                if (test == DELETED) {
+                    firstDeleted = index;
+                }
+
+                // Search in table after first failed attempt
+                int mask = N - 1;
+                int step = tableLookupStep(fraction, mask, power);
+                int n = 0;
+                for (;;) {
+                    if (check) {
+                        if (n >= occupiedCount) Kit.codeBug();
+                        ++n;
+                    }
+                    index = (index + step) & mask;
+                    test = keys[index];
+                    if (test == null) {
+                        break;
+                    }
+                    if (test == key
+                        || (values[N + index] == hash && test.equals(key)))
+                    {
+                        return index;
+                    }
+                    if (test == DELETED && firstDeleted < 0) {
+                        firstDeleted = index;
+                    }
+                }
+            }
+        }
+        // Inserting of new key
+        if (check && keys != null && keys[index] != null)
+            Kit.codeBug();
+        if (firstDeleted >= 0) {
+            index = firstDeleted;
+        }
+        else {
+            // Need to consume empty entry: check occupation level
+            if (keys == null || occupiedCount * 4 >= (1 << power) * 3) {
+                // Too litle unused entries: rehash
+                rehashTable();
+                return insertNewKey(key, hash);
+            }
+            ++occupiedCount;
+        }
+        keys[index] = key;
+        values[(1 << power) + index] = hash;
+        ++keyCount;
+        return index;
+    }
+
+    private void writeObject(ObjectOutputStream out)
+        throws IOException
+    {
+        out.defaultWriteObject();
+
+        int count = keyCount;
+        for (int i = 0; count != 0; ++i) {
+            Object key = keys[i];
+            if (key != null && key != DELETED) {
+                --count;
+                out.writeObject(key);
+                out.writeInt(values[i]);
+            }
+        }
+    }
+
+    private void readObject(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        in.defaultReadObject();
+
+        int writtenKeyCount = keyCount;
+        if (writtenKeyCount != 0) {
+            keyCount = 0;
+            int N = 1 << power;
+            keys = new Object[N];
+            values = new int[2 * N];
+            for (int i = 0; i != writtenKeyCount; ++i) {
+                Object key = in.readObject();
+                int hash = key.hashCode();
+                int index = insertNewKey(key, hash);
+                values[index] = in.readInt();
+            }
+        }
+    }
+
+// A == golden_ratio * (1 << 32) = ((sqrt(5) - 1) / 2) * (1 << 32)
+// See Knuth etc.
+    private static final int A = 0x9e3779b9;
+
+    private static final Object DELETED = new Object();
+
+// Structure of kyes and values arrays (N == 1 << power):
+// keys[0 <= i < N]: key value or null or DELETED mark
+// values[0 <= i < N]: value of key at keys[i]
+// values[N <= i < 2*N]: hash code of key at keys[i-N]
+
+    private transient Object[] keys;
+    private transient int[] values;
+
+    private int power;
+    private int keyCount;
+    private transient int occupiedCount; // == keyCount + deleted_count
+
+// If true, enables consitency checks
+    private static final boolean check = false;
+
+/* TEST START
+
+    public static void main(String[] args) {
+        if (!check) {
+            System.err.println("Set check to true and re-run");
+            throw new RuntimeException("Set check to true and re-run");
+        }
+
+        ObjToIntMap map;
+        map = new ObjToIntMap(0);
+        testHash(map, 3);
+        map = new ObjToIntMap(0);
+        testHash(map, 10 * 1000);
+        map = new ObjToIntMap();
+        testHash(map, 10 * 1000);
+        map = new ObjToIntMap(30 * 1000);
+        testHash(map, 10 * 100);
+        map.clear();
+        testHash(map, 4);
+        map = new ObjToIntMap(0);
+        testHash(map, 10 * 100);
+    }
+
+    private static void testHash(ObjToIntMap map, int N) {
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i);
+            check(-1 == map.get(key, -1));
+            map.put(key, i);
+            check(i == map.get(key, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i);
+            map.put(key, i);
+            check(i == map.get(key, -1));
+        }
+
+        check(map.size() == N);
+
+        System.out.print("."); System.out.flush();
+        Object[] keys = map.getKeys();
+        check(keys.length == N);
+        for (int i = 0; i != N; ++i) {
+            Object key = keys[i];
+            check(map.has(key));
+        }
+
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i);
+            check(i == map.get(key, -1));
+        }
+
+        int Nsqrt = -1;
+        for (int i = 0; ; ++i) {
+            if (i * i >= N) {
+                Nsqrt = i;
+                break;
+            }
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i * i);
+            map.put(key, i);
+            check(i == map.get(key, -1));
+        }
+
+        check(map.size() == 2 * N - Nsqrt);
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i * i);
+            check(i == map.get(key, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(-1 - i * i);
+            map.put(key, i);
+            check(i == map.get(key, -1));
+        }
+
+        check(map.size() == 3 * N - Nsqrt);
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(-1 - i * i);
+            map.remove(key);
+            check(!map.has(key));
+        }
+
+        check(map.size() == 2 * N - Nsqrt);
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i * i);
+            check(i == map.get(key, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i);
+            int j = intSqrt(i);
+            if (j * j == i) {
+                check(j == map.get(key, -1));
+            }else {
+                check(i == map.get(key, -1));
+            }
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i * i);
+            map.remove(key);
+            check(-2 == map.get(key, -2));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i);
+            map.put(key, i);
+            check(i == map.get(key, -2));
+        }
+
+        check(map.size() == N);
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i);
+            check(i == map.get(key, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        ObjToIntMap copy = (ObjToIntMap)writeAndRead(map);
+        check(copy.size() == N);
+
+        for (int i = 0; i != N; ++i) {
+            Object key = testKey(i);
+            check(i == copy.get(key, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        checkSameMaps(copy, map);
+
+        System.out.println(); System.out.flush();
+    }
+
+    private static void checkSameMaps(ObjToIntMap map1, ObjToIntMap map2) {
+        check(map1.size() == map2.size());
+        Object[] keys = map1.getKeys();
+        check(keys.length == map1.size());
+        for (int i = 0; i != keys.length; ++i) {
+            check(map1.get(keys[i], -1) == map2.get(keys[i], -1));
+        }
+    }
+
+    private static void check(boolean condition) {
+        if (!condition) Kit.codeBug();
+    }
+
+    private static Object[] testPool;
+
+    private static Object testKey(int i) {
+        int MAX_POOL = 100;
+        if (0 <= i && i < MAX_POOL) {
+            if (testPool != null && testPool[i] != null) {
+                return testPool[i];
+            }
+        }
+        Object x = new Double(i + 0.5);
+        if (0 <= i && i < MAX_POOL) {
+            if (testPool == null) {
+                testPool = new Object[MAX_POOL];
+            }
+            testPool[i] = x;
+        }
+        return x;
+    }
+
+    private static int intSqrt(int i) {
+        int approx = (int)Math.sqrt(i) + 1;
+        while (approx * approx > i) {
+            --approx;
+        }
+        return approx;
+    }
+
+    private static Object writeAndRead(Object obj) {
+        try {
+            java.io.ByteArrayOutputStream
+                bos = new java.io.ByteArrayOutputStream();
+            java.io.ObjectOutputStream
+                out = new java.io.ObjectOutputStream(bos);
+            out.writeObject(obj);
+            out.close();
+            byte[] data = bos.toByteArray();
+            java.io.ByteArrayInputStream
+                bis = new java.io.ByteArrayInputStream(data);
+            java.io.ObjectInputStream
+                in = new java.io.ObjectInputStream(bis);
+            Object result = in.readObject();
+            in.close();
+            return result;
+        }catch (Exception ex) {
+            throw new RuntimeException("Unexpected");
+        }
+    }
+
+// TEST END */
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Parser.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Parser.java
new file mode 100644
index 0000000..80cb937
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Parser.java
@@ -0,0 +1,2554 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Mike Ang
+ *   Igor Bukanov
+ *   Yuh-Ruey Chen
+ *   Ethan Hugg
+ *   Bob Jervis
+ *   Terry Lucas
+ *   Mike McCabe
+ *   Milen Nankov
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Reader;
+import java.io.IOException;
+import java.util.Hashtable;
+
+/**
+ * This class implements the JavaScript parser.
+ *
+ * It is based on the C source files jsparse.c and jsparse.h
+ * in the jsref package.
+ *
+ * @see TokenStream
+ *
+ * @author Mike McCabe
+ * @author Brendan Eich
+ */
+
+public class Parser
+{
+    // TokenInformation flags : currentFlaggedToken stores them together
+    // with token type
+    final static int
+        CLEAR_TI_MASK  = 0xFFFF,   // mask to clear token information bits
+        TI_AFTER_EOL   = 1 << 16,  // first token of the source line
+        TI_CHECK_LABEL = 1 << 17;  // indicates to check for label
+
+    CompilerEnvirons compilerEnv;
+    private ErrorReporter errorReporter;
+    /*APPJET*//*no longer:private*/ String sourceURI;
+    boolean calledByCompileFunction;
+
+    /*APPJET*//*no longer:private*/ TokenStream ts;
+    private int currentFlaggedToken;
+    /*APPJET*//*no longer:private*/ int syntaxErrorCount;
+
+    private IRFactory nf;
+
+    private int nestingOfFunction;
+
+    private Decompiler decompiler;
+    private String encodedSource;
+
+// The following are per function variables and should be saved/restored
+// during function parsing.
+// XXX Move to separated class?
+    ScriptOrFnNode currentScriptOrFn;
+    Node.Scope currentScope;
+    private int nestingOfWith;
+    private Hashtable labelSet; // map of label names into nodes
+    private ObjArray loopSet;
+    private ObjArray loopAndSwitchSet;
+    private boolean hasReturnValue;
+    private int endFlags;
+// end of per function variables
+
+    /*APPJET*/public int lastConsumedTokenLine = -1;
+    
+    public int getCurrentLineNumber() {
+        return ts.getLineno();
+    }
+
+    // Exception to unwind
+    private static class ParserException extends RuntimeException
+    {
+        static final long serialVersionUID = 5882582646773765630L;
+    }
+
+    public Parser(CompilerEnvirons compilerEnv, ErrorReporter errorReporter)
+    {
+        this.compilerEnv = compilerEnv;
+        this.errorReporter = errorReporter;
+    }
+
+    protected Decompiler createDecompiler(CompilerEnvirons compilerEnv)
+    {
+        return new Decompiler();
+    }
+
+    void addStrictWarning(String messageId, String messageArg)
+    {
+        if (compilerEnv.isStrictMode())
+            addWarning(messageId, messageArg);
+    }
+
+    void addWarning(String messageId, String messageArg)
+    {
+        String message = ScriptRuntime.getMessage1(messageId, messageArg);
+        if (compilerEnv.reportWarningAsError()) {
+            ++syntaxErrorCount;
+            errorReporter.error(message, sourceURI, ts.getLineno(),
+                                ts.getLine(), ts.getOffset());
+        } else
+            errorReporter.warning(message, sourceURI, ts.getLineno(),
+                                  ts.getLine(), ts.getOffset());
+    }
+
+    void addError(String messageId)
+    {
+        ++syntaxErrorCount;
+        String message = ScriptRuntime.getMessage0(messageId);
+        errorReporter.error(message, sourceURI, ts.getLineno(),
+                            ts.getLine(), ts.getOffset());
+    }
+
+    void addError(String messageId, String messageArg)
+    {
+        ++syntaxErrorCount;
+        String message = ScriptRuntime.getMessage1(messageId, messageArg);
+        errorReporter.error(message, sourceURI, ts.getLineno(),
+                            ts.getLine(), ts.getOffset());
+    }
+
+    RuntimeException reportError(String messageId)
+    {
+        addError(messageId);
+
+        // Throw a ParserException exception to unwind the recursive descent
+        // parse.
+        throw new ParserException();
+    }
+
+    /*APPJET*//*added method*/
+    RuntimeException reportError(String messageId, String messageArg)
+    {
+        addError(messageId, messageArg);
+
+        // Throw a ParserException exception to unwind the recursive descent
+        // parse.
+        throw new ParserException();
+    }
+    
+    /*APPJET*//*no longer: private*/int peekToken()
+        throws IOException
+    {
+        int tt = currentFlaggedToken;
+        if (tt == Token.EOF) {
+            tt = ts.getToken();
+            if (tt == Token.EOL) {
+                do {
+                    tt = ts.getToken();
+                } while (tt == Token.EOL);
+                tt |= TI_AFTER_EOL;
+            }
+            currentFlaggedToken = tt;
+        }
+        return tt & CLEAR_TI_MASK;
+    }
+
+    private int peekFlaggedToken()
+        throws IOException
+    {
+        peekToken();
+        return currentFlaggedToken;
+    }
+
+    /*APPJET*//*no longer:private*/ void consumeToken()
+    {
+        currentFlaggedToken = Token.EOF;
+        /*APPJET*/lastConsumedTokenLine = ts.getLineno();
+    }
+
+    private int nextToken()
+        throws IOException
+    {
+        int tt = peekToken();
+        consumeToken();
+        return tt;
+    }
+
+    private int nextFlaggedToken()
+        throws IOException
+    {
+        peekToken();
+        int ttFlagged = currentFlaggedToken;
+        consumeToken();
+        return ttFlagged;
+    }
+
+    private boolean matchToken(int toMatch)
+        throws IOException
+    {
+        int tt = peekToken();
+        if (tt != toMatch) {
+            return false;
+        }
+        consumeToken();
+        return true;
+    }
+
+    private int peekTokenOrEOL()
+        throws IOException
+    {
+        int tt = peekToken();
+        // Check for last peeked token flags
+        if ((currentFlaggedToken & TI_AFTER_EOL) != 0) {
+            tt = Token.EOL;
+        }
+        return tt;
+    }
+
+    private void setCheckForLabel()
+    {
+        if ((currentFlaggedToken & CLEAR_TI_MASK) != Token.NAME)
+            throw Kit.codeBug();
+        currentFlaggedToken |= TI_CHECK_LABEL;
+    }
+
+    private void mustMatchToken(int toMatch, String messageId)
+        throws IOException, ParserException
+    {
+        if (!matchToken(toMatch)) {
+            reportError(messageId);
+        }
+    }
+
+    /*APPJET*//*added method*/
+    private void mustMatchToken(int toMatch, String messageId, String messageArg)
+        throws IOException, ParserException
+    {
+        if (!matchToken(toMatch)) {
+            reportError(messageId, messageArg);
+        }
+    }
+    
+    private void mustHaveXML()
+    {
+        if (!compilerEnv.isXmlAvailable()) {
+            reportError("msg.XML.not.available");
+        }
+    }
+
+    public String getEncodedSource()
+    {
+        return encodedSource;
+    }
+
+    public boolean eof()
+    {
+        return ts.eof();
+    }
+
+    boolean insideFunction()
+    {
+        return nestingOfFunction != 0;
+    }
+    
+    void pushScope(Node node) {
+        Node.Scope scopeNode = (Node.Scope) node;
+        if (scopeNode.getParentScope() != null) throw Kit.codeBug();
+        scopeNode.setParent(currentScope);
+        currentScope = scopeNode;
+    }
+    
+    void popScope() {
+        currentScope = currentScope.getParentScope();
+    }
+
+    private Node enterLoop(Node loopLabel, boolean doPushScope)
+    {
+        Node loop = nf.createLoopNode(loopLabel, ts.getLineno());
+        if (loopSet == null) {
+            loopSet = new ObjArray();
+            if (loopAndSwitchSet == null) {
+                loopAndSwitchSet = new ObjArray();
+            }
+        }
+        loopSet.push(loop);
+        loopAndSwitchSet.push(loop);
+        if (doPushScope) {
+            pushScope(loop);
+        }
+        return loop;
+    }
+
+    private void exitLoop(boolean doPopScope)
+    {
+        loopSet.pop();
+        loopAndSwitchSet.pop();
+        if (doPopScope) {
+            popScope();
+        }
+    }
+
+    private Node enterSwitch(Node switchSelector, int lineno)
+    {
+        Node switchNode = nf.createSwitch(switchSelector, lineno);
+        if (loopAndSwitchSet == null) {
+            loopAndSwitchSet = new ObjArray();
+        }
+        loopAndSwitchSet.push(switchNode);
+        return switchNode;
+    }
+
+    private void exitSwitch()
+    {
+        loopAndSwitchSet.pop();
+    }
+
+    /*
+     * Build a parse tree from the given sourceString.
+     *
+     * @return an Object representing the parsed
+     * program.  If the parse fails, null will be returned.  (The
+     * parse failure will result in a call to the ErrorReporter from
+     * CompilerEnvirons.)
+     */
+    public ScriptOrFnNode parse(String sourceString,
+                                String sourceURI, int lineno)
+    {
+        this.sourceURI = sourceURI;
+        this.ts = new TokenStream(this, null, sourceString, lineno);
+        try {
+            return parse();
+        } catch (IOException ex) {
+            // Should never happen
+            throw new IllegalStateException();
+        }
+    }
+
+    /*
+     * Build a parse tree from the given sourceString.
+     *
+     * @return an Object representing the parsed
+     * program.  If the parse fails, null will be returned.  (The
+     * parse failure will result in a call to the ErrorReporter from
+     * CompilerEnvirons.)
+     */
+    public ScriptOrFnNode parse(Reader sourceReader,
+                                String sourceURI, int lineno)
+        throws IOException
+    {
+        this.sourceURI = sourceURI;
+        this.ts = new TokenStream(this, sourceReader, null, lineno);
+        return parse();
+    }
+
+    private ScriptOrFnNode parse()
+        throws IOException
+    {
+        this.decompiler = createDecompiler(compilerEnv);
+        this.nf = new IRFactory(this);
+        currentScriptOrFn = nf.createScript();
+        currentScope = currentScriptOrFn;
+        int sourceStartOffset = decompiler.getCurrentOffset();
+        this.encodedSource = null;
+        decompiler.addToken(Token.SCRIPT);
+
+        this.currentFlaggedToken = Token.EOF;
+        this.syntaxErrorCount = 0;
+
+        int baseLineno = ts.getLineno();  // line number where source starts
+
+        /*APPJET*/lastConsumedTokenLine = baseLineno;
+        
+        /* so we have something to add nodes to until
+         * we've collected all the source */
+        Node pn = nf.createLeaf(Token.BLOCK);
+
+        try {
+            for (;;) {
+                int tt = peekToken();
+
+                if (tt <= Token.EOF) {
+                    break;
+                }
+
+                Node n;
+                if (tt == Token.FUNCTION) {
+                    consumeToken();
+                    try {
+                        n = function(calledByCompileFunction
+                                     ? FunctionNode.FUNCTION_EXPRESSION
+                                     : FunctionNode.FUNCTION_STATEMENT);
+                    } catch (ParserException e) {
+                        break;
+                    }
+                } else {
+                    n = statement();
+                }
+                nf.addChildToBack(pn, n);
+            }
+        } catch (StackOverflowError ex) {
+            String msg = ScriptRuntime.getMessage0(
+                "msg.too.deep.parser.recursion");
+            throw Context.reportRuntimeError(msg, sourceURI,
+                                             ts.getLineno(), null, 0);
+        }
+
+        if (this.syntaxErrorCount != 0) {
+            String msg = String.valueOf(this.syntaxErrorCount);
+            msg = ScriptRuntime.getMessage1("msg.got.syntax.errors", msg);
+            throw errorReporter.runtimeError(msg, sourceURI, baseLineno,
+                                             null, 0);
+        }
+
+        currentScriptOrFn.setSourceName(sourceURI);
+        currentScriptOrFn.setBaseLineno(baseLineno);
+        currentScriptOrFn.setEndLineno(ts.getLineno());
+
+        int sourceEndOffset = decompiler.getCurrentOffset();
+        currentScriptOrFn.setEncodedSourceBounds(sourceStartOffset,
+                                                 sourceEndOffset);
+
+        nf.initScript(currentScriptOrFn, pn);
+
+        if (compilerEnv.isGeneratingSource()) {
+            encodedSource = decompiler.getEncodedSource();
+        }
+        this.decompiler = null; // It helps GC
+
+        return currentScriptOrFn;
+    }
+
+    /*
+     * The C version of this function takes an argument list,
+     * which doesn't seem to be needed for tree generation...
+     * it'd only be useful for checking argument hiding, which
+     * I'm not doing anyway...
+     */
+    private Node parseFunctionBody()
+        throws IOException
+    {
+        ++nestingOfFunction;
+        Node pn = nf.createBlock(ts.getLineno());
+        try {
+            bodyLoop: for (;;) {
+                Node n;
+                int tt = peekToken();
+                switch (tt) {
+                  case Token.ERROR:
+                  case Token.EOF:
+                  case Token.RC:
+                    break bodyLoop;
+
+                  case Token.FUNCTION:
+                    consumeToken();
+                    n = function(FunctionNode.FUNCTION_STATEMENT);
+                    break;
+                  default:
+                    n = statement();
+                    break;
+                }
+                nf.addChildToBack(pn, n);
+            }
+        } catch (ParserException e) {
+            // Ignore it
+        } finally {
+            --nestingOfFunction;
+        }
+
+        return pn;
+    }
+
+    private Node function(int functionType)
+        throws IOException, ParserException
+    {
+        int syntheticType = functionType;
+        int baseLineno = ts.getLineno();  // line number where source starts
+
+        int functionSourceStart = decompiler.markFunctionStart(functionType);
+        String name;
+        Node memberExprNode = null;
+        if (matchToken(Token.NAME)) {
+            name = ts.getString();
+            decompiler.addName(name);
+            if (!matchToken(Token.LP)) {
+                if (compilerEnv.isAllowMemberExprAsFunctionName()) {
+                    // Extension to ECMA: if 'function <name>' does not follow
+                    // by '(', assume <name> starts memberExpr
+                    Node memberExprHead = nf.createName(name);
+                    name = "";
+                    memberExprNode = memberExprTail(false, memberExprHead);
+                }
+                mustMatchToken(Token.LP, "msg.no.paren.parms");
+            }
+        } else if (matchToken(Token.LP)) {
+            // Anonymous function
+            name = "";
+        } else {
+            name = "";
+            if (compilerEnv.isAllowMemberExprAsFunctionName()) {
+                // Note that memberExpr can not start with '(' like
+                // in function (1+2).toString(), because 'function (' already
+                // processed as anonymous function
+                memberExprNode = memberExpr(false);
+            }
+            mustMatchToken(Token.LP, "msg.no.paren.parms");
+        }
+
+        if (memberExprNode != null) {
+            syntheticType = FunctionNode.FUNCTION_EXPRESSION;
+        } 
+        
+        if (syntheticType != FunctionNode.FUNCTION_EXPRESSION && 
+            name.length() > 0)
+        {
+            // Function statements define a symbol in the enclosing scope
+            defineSymbol(Token.FUNCTION, name);
+        }
+
+        boolean nested = insideFunction();
+
+        FunctionNode fnNode = nf.createFunction(name);
+        if (nested || nestingOfWith > 0) {
+            // 1. Nested functions are not affected by the dynamic scope flag
+            // as dynamic scope is already a parent of their scope.
+            // 2. Functions defined under the with statement also immune to
+            // this setup, in which case dynamic scope is ignored in favor
+            // of with object.
+            fnNode.itsIgnoreDynamicScope = true;
+        }
+        int functionIndex = currentScriptOrFn.addFunction(fnNode);
+
+        int functionSourceEnd;
+
+        ScriptOrFnNode savedScriptOrFn = currentScriptOrFn;
+        currentScriptOrFn = fnNode;
+        Node.Scope savedCurrentScope = currentScope;
+        currentScope = fnNode;
+        int savedNestingOfWith = nestingOfWith;
+        nestingOfWith = 0;
+        Hashtable savedLabelSet = labelSet;
+        labelSet = null;
+        ObjArray savedLoopSet = loopSet;
+        loopSet = null;
+        ObjArray savedLoopAndSwitchSet = loopAndSwitchSet;
+        loopAndSwitchSet = null;
+        boolean savedHasReturnValue = hasReturnValue;
+        int savedFunctionEndFlags = endFlags;
+
+        Node destructuring = null;
+        Node body;
+        try {
+            decompiler.addToken(Token.LP);
+            if (!matchToken(Token.RP)) {
+                boolean first = true;
+                do {
+                    if (!first)
+                        decompiler.addToken(Token.COMMA);
+                    first = false;
+                    int tt = peekToken();
+                    if (tt == Token.LB || tt == Token.LC) {
+                        // Destructuring assignment for parameters: add a 
+                        // dummy parameter name, and add a statement to the
+                        // body to initialize variables from the destructuring
+                        // assignment
+                        if (destructuring == null) {
+                            destructuring = new Node(Token.COMMA);
+                        }
+                        String parmName = currentScriptOrFn.getNextTempName();
+                        defineSymbol(Token.LP, parmName);
+                        destructuring.addChildToBack(
+                            nf.createDestructuringAssignment(Token.VAR,
+                                primaryExpr(), nf.createName(parmName)));
+                    } else {
+                        mustMatchToken(Token.NAME, "msg.no.parm");
+                        String s = ts.getString();
+                        defineSymbol(Token.LP, s);
+                        decompiler.addName(s);
+                    }
+                } while (matchToken(Token.COMMA));
+
+                mustMatchToken(Token.RP, "msg.no.paren.after.parms");
+            }
+            decompiler.addToken(Token.RP);
+
+            mustMatchToken(Token.LC, "msg.no.brace.body");
+            decompiler.addEOL(Token.LC);
+            body = parseFunctionBody();
+            if (destructuring != null) {
+                body.addChildToFront(
+                    new Node(Token.EXPR_VOID, destructuring, ts.getLineno()));
+            }
+            mustMatchToken(Token.RC, "msg.no.brace.after.body");
+
+            if (compilerEnv.isStrictMode() && !body.hasConsistentReturnUsage())
+            {
+              String msg = name.length() > 0 ? "msg.no.return.value"
+                                             : "msg.anon.no.return.value";
+              addStrictWarning(msg, name);
+            }
+            
+            if (syntheticType == FunctionNode.FUNCTION_EXPRESSION &&
+                name.length() > 0 && currentScope.getSymbol(name) == null) 
+            {
+                // Function expressions define a name only in the body of the 
+                // function, and only if not hidden by a parameter name
+                defineSymbol(Token.FUNCTION, name);
+            }
+            
+            decompiler.addToken(Token.RC);
+            functionSourceEnd = decompiler.markFunctionEnd(functionSourceStart);
+            if (functionType != FunctionNode.FUNCTION_EXPRESSION) {
+                // Add EOL only if function is not part of expression
+                // since it gets SEMI + EOL from Statement in that case
+                decompiler.addToken(Token.EOL);
+            }
+        }
+        finally {
+            hasReturnValue = savedHasReturnValue;
+            endFlags = savedFunctionEndFlags;
+            loopAndSwitchSet = savedLoopAndSwitchSet;
+            loopSet = savedLoopSet;
+            labelSet = savedLabelSet;
+            nestingOfWith = savedNestingOfWith;
+            currentScriptOrFn = savedScriptOrFn;
+            currentScope = savedCurrentScope;
+        }
+
+        fnNode.setEncodedSourceBounds(functionSourceStart, functionSourceEnd);
+        fnNode.setSourceName(sourceURI);
+        fnNode.setBaseLineno(baseLineno);
+        fnNode.setEndLineno(ts.getLineno());
+
+        Node pn = nf.initFunction(fnNode, functionIndex, body, syntheticType);
+        if (memberExprNode != null) {
+            pn = nf.createAssignment(Token.ASSIGN, memberExprNode, pn);
+            if (functionType != FunctionNode.FUNCTION_EXPRESSION) {
+                // XXX check JScript behavior: should it be createExprStatement?
+                pn = nf.createExprStatementNoReturn(pn, baseLineno);
+            }
+        }
+        return pn;
+    }
+
+    private Node statements(Node scope)
+        throws IOException
+    {
+        Node pn = scope != null ? scope : nf.createBlock(ts.getLineno());
+
+        int tt;
+        while ((tt = peekToken()) > Token.EOF && tt != Token.RC) {
+            nf.addChildToBack(pn, statement());
+        }
+
+        return pn;
+    }
+
+    private Node condition()
+        throws IOException, ParserException
+    {
+        mustMatchToken(Token.LP, "msg.no.paren.cond");
+        decompiler.addToken(Token.LP);
+        Node pn = expr(false);
+        mustMatchToken(Token.RP, "msg.no.paren.after.cond");
+        decompiler.addToken(Token.RP);
+
+        // Report strict warning on code like "if (a = 7) ...". Suppress the
+        // warning if the condition is parenthesized, like "if ((a = 7)) ...".
+        if (pn.getProp(Node.PARENTHESIZED_PROP) == null &&
+            (pn.getType() == Token.SETNAME || pn.getType() == Token.SETPROP ||
+             pn.getType() == Token.SETELEM))
+        {
+            addStrictWarning("msg.equal.as.assign", "");
+        }
+        return pn;
+    }
+
+    // match a NAME; return null if no match.
+    private Node matchJumpLabelName()
+        throws IOException, ParserException
+    {
+        Node label = null;
+
+        int tt = peekTokenOrEOL();
+        if (tt == Token.NAME) {
+            consumeToken();
+            String name = ts.getString();
+            decompiler.addName(name);
+            if (labelSet != null) {
+                label = (Node)labelSet.get(name);
+            }
+            if (label == null) {
+                reportError("msg.undef.label");
+            }
+        }
+
+        return label;
+    }
+
+    private Node statement()
+        throws IOException
+    {
+        try {
+            Node pn = statementHelper(null);
+            if (pn != null) {
+                if (compilerEnv.isStrictMode() && !pn.hasSideEffects())
+                    addStrictWarning("msg.no.side.effects", "");
+                return pn;
+            }
+        } catch (ParserException e) { }
+
+        // skip to end of statement
+        int lineno = ts.getLineno();
+        guessingStatementEnd: for (;;) {
+            int tt = peekTokenOrEOL();
+            consumeToken();
+            switch (tt) {
+              case Token.ERROR:
+              case Token.EOF:
+              case Token.EOL:
+              case Token.SEMI:
+                break guessingStatementEnd;
+            }
+        }
+        return nf.createExprStatement(nf.createName("error"), lineno);
+    }
+
+    /*APPJET*/ /*begin*/
+    private Node statementHelper(Node statementLabel)
+        throws IOException, ParserException {
+        
+        Node pn = statementHelper0(statementLabel);
+        if (pn != null && pn.getType() != Token.BLOCK && pn.getType() != Token.LOOP) {
+            pn.statementEndLineNum = lastConsumedTokenLine;
+        }
+        return pn;
+    }
+    /*end*/
+    
+    private Node statementHelper0(Node statementLabel) /*APPJET*/
+        throws IOException, ParserException
+    {
+        Node pn = null;
+        int tt = peekToken();
+
+        switch (tt) {
+          case Token.IF: {
+            consumeToken();
+
+            decompiler.addToken(Token.IF);
+            int lineno = ts.getLineno();
+            Node cond = condition();
+            /*APPJET*/cond.lineno = lineno;
+            /*APPJET*/cond.statementEndLineNum = lastConsumedTokenLine;
+            decompiler.addEOL(Token.LC);
+            Node ifTrue = statement();
+            Node ifFalse = null;
+            if (matchToken(Token.ELSE)) {
+                decompiler.addToken(Token.RC);
+                decompiler.addToken(Token.ELSE);
+                decompiler.addEOL(Token.LC);
+                ifFalse = statement();
+            }
+            decompiler.addEOL(Token.RC);
+            pn = nf.createIf(cond, ifTrue, ifFalse, lineno);
+            return pn;
+          }
+
+          case Token.SWITCH: {
+            consumeToken();
+
+            decompiler.addToken(Token.SWITCH);
+            int lineno = ts.getLineno();
+            mustMatchToken(Token.LP, "msg.no.paren.switch");
+            decompiler.addToken(Token.LP);
+            /*APPJET*/Node toSwitchOn = expr(false);
+            /*APPJET*/toSwitchOn.lineno = lineno;
+            /*APPJET*/toSwitchOn.statementEndLineNum = lastConsumedTokenLine;
+            pn = enterSwitch(toSwitchOn, lineno); /*APPJET*/
+            try {
+                mustMatchToken(Token.RP, "msg.no.paren.after.switch");
+                decompiler.addToken(Token.RP);
+                mustMatchToken(Token.LC, "msg.no.brace.switch");
+                decompiler.addEOL(Token.LC);
+
+                boolean hasDefault = false;
+                switchLoop: for (;;) {
+                    tt = nextToken();
+                    Node caseExpression;
+                    switch (tt) {
+                      case Token.RC:
+                        break switchLoop;
+
+                      case Token.CASE:
+                        decompiler.addToken(Token.CASE);
+                        caseExpression = expr(false);
+                        mustMatchToken(Token.COLON, "msg.no.colon.case");
+                        decompiler.addEOL(Token.COLON);
+                        break;
+
+                      case Token.DEFAULT:
+                        if (hasDefault) {
+                            reportError("msg.double.switch.default");
+                        }
+                        decompiler.addToken(Token.DEFAULT);
+                        hasDefault = true;
+                        caseExpression = null;
+                        mustMatchToken(Token.COLON, "msg.no.colon.case");
+                        decompiler.addEOL(Token.COLON);
+                        break;
+
+                      default:
+                        reportError("msg.bad.switch");
+                        break switchLoop;
+                    }
+
+                    Node block = nf.createLeaf(Token.BLOCK);
+                    while ((tt = peekToken()) != Token.RC
+                           && tt != Token.CASE
+                           && tt != Token.DEFAULT
+                           && tt != Token.EOF)
+                    {
+                        nf.addChildToBack(block, statement());
+                    }
+
+                    // caseExpression == null => add default label
+                    nf.addSwitchCase(pn, caseExpression, block);
+                }
+                decompiler.addEOL(Token.RC);
+                nf.closeSwitch(pn);
+            } finally {
+                exitSwitch();
+            }
+            return pn;
+          }
+
+          case Token.WHILE: {
+            consumeToken();
+            decompiler.addToken(Token.WHILE);
+
+            Node loop = enterLoop(statementLabel, true);
+            try {
+                /*APPJET*/int lineno = ts.getLineno();                
+                Node cond = condition();
+                /*APPJET*/cond.lineno = lineno;
+                /*APPJET*/cond.statementEndLineNum = lastConsumedTokenLine;
+                decompiler.addEOL(Token.LC);
+                Node body = statement();
+                decompiler.addEOL(Token.RC);
+                pn = nf.createWhile(loop, cond, body);
+            } finally {
+                exitLoop(true);
+            }
+            return pn;
+          }
+
+          case Token.DO: {
+            consumeToken();
+            decompiler.addToken(Token.DO);
+            decompiler.addEOL(Token.LC);
+
+            Node loop = enterLoop(statementLabel, true);
+            try {
+                Node body = statement();
+                decompiler.addToken(Token.RC);
+                mustMatchToken(Token.WHILE, "msg.no.while.do");
+                decompiler.addToken(Token.WHILE);
+                Node cond = condition();
+                pn = nf.createDoWhile(loop, body, cond);
+            } finally {
+                exitLoop(true);
+            }
+            // Always auto-insert semicolon to follow SpiderMonkey:
+            // It is required by ECMAScript but is ignored by the rest of
+            // world, see bug 238945
+            matchToken(Token.SEMI);
+            decompiler.addEOL(Token.SEMI);
+            return pn;
+          }
+
+          case Token.FOR: {
+            consumeToken();
+            boolean isForEach = false;
+            decompiler.addToken(Token.FOR);
+
+            Node loop = enterLoop(statementLabel, true);
+            try {
+                Node init;  // Node init is also foo in 'foo in object'
+                Node cond;  // Node cond is also object in 'foo in object'
+                Node incr = null;
+                Node body;
+                int declType = -1;
+
+                // See if this is a for each () instead of just a for ()
+                if (matchToken(Token.NAME)) {
+                    decompiler.addName(ts.getString());
+                    if (ts.getString().equals("each")) {
+                        isForEach = true;
+                    } else {
+                        reportError("msg.no.paren.for");
+                    }
+                }
+
+                mustMatchToken(Token.LP, "msg.no.paren.for");
+                decompiler.addToken(Token.LP);
+                tt = peekToken();
+                if (tt == Token.SEMI) {
+                    init = nf.createLeaf(Token.EMPTY);
+                } else {
+                    if (tt == Token.VAR || tt == Token.LET) {
+                        // set init to a var list or initial
+                        consumeToken();    // consume the token
+                        decompiler.addToken(tt);
+                        init = variables(true, tt);
+                        declType = tt;
+                    }
+                    else {
+                        init = expr(true);
+                    }
+                }
+
+                if (matchToken(Token.IN)) {
+                    decompiler.addToken(Token.IN);
+                    // 'cond' is the object over which we're iterating
+                    cond = expr(false);
+                } else {  // ordinary for loop
+                    mustMatchToken(Token.SEMI, "msg.no.semi.for");
+                    decompiler.addToken(Token.SEMI);
+                    if (peekToken() == Token.SEMI) {
+                        // no loop condition
+                        cond = nf.createLeaf(Token.EMPTY);
+                    } else {
+                        cond = expr(false);
+                    }
+
+                    mustMatchToken(Token.SEMI, "msg.no.semi.for.cond");
+                    decompiler.addToken(Token.SEMI);
+                    if (peekToken() == Token.RP) {
+                        incr = nf.createLeaf(Token.EMPTY);
+                    } else {
+                        incr = expr(false);
+                    }
+                }
+
+                mustMatchToken(Token.RP, "msg.no.paren.for.ctrl");
+                decompiler.addToken(Token.RP);
+                decompiler.addEOL(Token.LC);
+                /*APPJET*/int parenEndLine = lastConsumedTokenLine;
+                body = statement();
+                decompiler.addEOL(Token.RC);
+
+                if (incr == null) {
+                    // cond could be null if 'in obj' got eaten
+                    // by the init node.
+                    pn = nf.createForIn(declType, loop, init, cond, body,
+                                        isForEach);
+                } else {
+                    pn = nf.createFor(loop, init, cond, incr, body);
+                }
+                /*APPJET*/ // use the LOOP object to hold the range of the paren'd expr
+                /*APPJET*/pn.statementEndLineNum = parenEndLine;
+            } finally {
+                exitLoop(true);
+            }
+            return pn;
+          }
+
+          case Token.TRY: {
+            consumeToken();
+            int lineno = ts.getLineno();
+
+            Node tryblock;
+            Node catchblocks = null;
+            Node finallyblock = null;
+
+            decompiler.addToken(Token.TRY);
+            if (peekToken() != Token.LC) {
+                reportError("msg.no.brace.try");
+            }
+            decompiler.addEOL(Token.LC);
+            tryblock = statement();
+            decompiler.addEOL(Token.RC);
+
+            catchblocks = nf.createLeaf(Token.BLOCK);
+
+            boolean sawDefaultCatch = false;
+            int peek = peekToken();
+            if (peek == Token.CATCH) {
+                while (matchToken(Token.CATCH)) {
+                    if (sawDefaultCatch) {
+                        reportError("msg.catch.unreachable");
+                    }
+                    decompiler.addToken(Token.CATCH);
+                    mustMatchToken(Token.LP, "msg.no.paren.catch");
+                    decompiler.addToken(Token.LP);
+
+                    mustMatchToken(Token.NAME, "msg.bad.catchcond");
+                    String varName = ts.getString();
+                    decompiler.addName(varName);
+
+                    Node catchCond = null;
+                    if (matchToken(Token.IF)) {
+                        decompiler.addToken(Token.IF);
+                        catchCond = expr(false);
+                    } else {
+                        sawDefaultCatch = true;
+                    }
+
+                    mustMatchToken(Token.RP, "msg.bad.catchcond");
+                    decompiler.addToken(Token.RP);
+                    mustMatchToken(Token.LC, "msg.no.brace.catchblock");
+                    decompiler.addEOL(Token.LC);
+
+                    nf.addChildToBack(catchblocks,
+                        nf.createCatch(varName, catchCond,
+                                       statements(null),
+                                       ts.getLineno()));
+
+                    mustMatchToken(Token.RC, "msg.no.brace.after.body");
+                    decompiler.addEOL(Token.RC);
+                }
+            } else if (peek != Token.FINALLY) {
+                mustMatchToken(Token.FINALLY, "msg.try.no.catchfinally");
+            }
+
+            if (matchToken(Token.FINALLY)) {
+                decompiler.addToken(Token.FINALLY);
+                decompiler.addEOL(Token.LC);
+                finallyblock = statement();
+                decompiler.addEOL(Token.RC);
+            }
+
+            pn = nf.createTryCatchFinally(tryblock, catchblocks,
+                                          finallyblock, lineno);
+
+            return pn;
+          }
+
+          case Token.THROW: {
+            consumeToken();
+            if (peekTokenOrEOL() == Token.EOL) {
+                // ECMAScript does not allow new lines before throw expression,
+                // see bug 256617
+                reportError("msg.bad.throw.eol");
+            }
+
+            int lineno = ts.getLineno();
+            decompiler.addToken(Token.THROW);
+            pn = nf.createThrow(expr(false), lineno);
+            break;
+          }
+
+          case Token.BREAK: {
+            consumeToken();
+            int lineno = ts.getLineno();
+
+            decompiler.addToken(Token.BREAK);
+
+            // matchJumpLabelName only matches if there is one
+            Node breakStatement = matchJumpLabelName();
+            if (breakStatement == null) {
+                if (loopAndSwitchSet == null || loopAndSwitchSet.size() == 0) {
+                    reportError("msg.bad.break");
+                    return null;
+                }
+                breakStatement = (Node)loopAndSwitchSet.peek();
+            }
+            pn = nf.createBreak(breakStatement, lineno);
+            break;
+          }
+
+          case Token.CONTINUE: {
+            consumeToken();
+            int lineno = ts.getLineno();
+
+            decompiler.addToken(Token.CONTINUE);
+
+            Node loop;
+            // matchJumpLabelName only matches if there is one
+            Node label = matchJumpLabelName();
+            if (label == null) {
+                if (loopSet == null || loopSet.size() == 0) {
+                    reportError("msg.continue.outside");
+                    return null;
+                }
+                loop = (Node)loopSet.peek();
+            } else {
+                loop = nf.getLabelLoop(label);
+                if (loop == null) {
+                    reportError("msg.continue.nonloop");
+                    return null;
+                }
+            }
+            pn = nf.createContinue(loop, lineno);
+            break;
+          }
+
+          case Token.WITH: {
+            consumeToken();
+
+            decompiler.addToken(Token.WITH);
+            int lineno = ts.getLineno();
+            mustMatchToken(Token.LP, "msg.no.paren.with");
+            decompiler.addToken(Token.LP);
+            Node obj = expr(false);
+            /*APPJET*/obj.lineno = lineno;
+            /*APPJET*/obj.statementEndLineNum = lastConsumedTokenLine;
+            mustMatchToken(Token.RP, "msg.no.paren.after.with");
+            decompiler.addToken(Token.RP);
+            decompiler.addEOL(Token.LC);
+
+            ++nestingOfWith;
+            Node body;
+            try {
+                body = statement();
+            } finally {
+                --nestingOfWith;
+            }
+
+            decompiler.addEOL(Token.RC);
+
+            pn = nf.createWith(obj, body, lineno);
+            return pn;
+          }
+
+          case Token.CONST:
+          case Token.VAR: {
+            consumeToken();
+            decompiler.addToken(tt);
+            pn = variables(false, tt);
+            break;
+          }
+          
+          case Token.LET: {
+            consumeToken();
+            decompiler.addToken(Token.LET);
+            if (peekToken() == Token.LP) {
+                pn = let(true);
+            } else {
+                pn = variables(false, tt);
+            }
+            return pn;
+          }
+
+          case Token.RETURN: 
+          case Token.YIELD: {
+            pn = returnOrYield(tt, false);
+            break;
+          }
+
+          case Token.DEBUGGER:
+            consumeToken();
+            decompiler.addToken(Token.DEBUGGER);
+            pn = nf.createDebugger(ts.getLineno());
+            break;
+
+          case Token.LC:
+            consumeToken();
+            if (statementLabel != null) {
+                decompiler.addToken(Token.LC);
+            }
+            Node scope = nf.createScopeNode(Token.BLOCK, ts.getLineno());
+            pushScope(scope);
+            try {
+                statements(scope);
+                mustMatchToken(Token.RC, "msg.no.brace.block");
+                if (statementLabel != null) {
+                    decompiler.addEOL(Token.RC);
+                }
+                return scope;
+            } finally {
+                popScope();
+            }
+
+          case Token.ERROR:
+            // Fall thru, to have a node for error recovery to work on
+          case Token.SEMI:
+            consumeToken();
+            pn = nf.createLeaf(Token.EMPTY);
+            return pn;
+
+          case Token.FUNCTION: {
+            consumeToken();
+            pn = function(FunctionNode.FUNCTION_EXPRESSION_STATEMENT);
+            return pn;
+          }
+
+          case Token.DEFAULT :
+            consumeToken();
+            mustHaveXML();
+
+            decompiler.addToken(Token.DEFAULT);
+            int nsLine = ts.getLineno();
+
+            if (!(matchToken(Token.NAME)
+                  && ts.getString().equals("xml")))
+            {
+                reportError("msg.bad.namespace");
+            }
+            decompiler.addName(" xml");
+
+            if (!(matchToken(Token.NAME)
+                  && ts.getString().equals("namespace")))
+            {
+                reportError("msg.bad.namespace");
+            }
+            decompiler.addName(" namespace");
+
+            if (!matchToken(Token.ASSIGN)) {
+                reportError("msg.bad.namespace");
+            }
+            decompiler.addToken(Token.ASSIGN);
+
+            Node expr = expr(false);
+            pn = nf.createDefaultNamespace(expr, nsLine);
+            break;
+
+          case Token.NAME: {
+            int lineno = ts.getLineno();
+            String name = ts.getString();
+            setCheckForLabel();
+            pn = expr(false);
+            if (pn.getType() != Token.LABEL) {
+                pn = nf.createExprStatement(pn, lineno);
+            } else {
+                // Parsed the label: push back token should be
+                // colon that primaryExpr left untouched.
+                if (peekToken() != Token.COLON) Kit.codeBug();
+                consumeToken();
+                // depend on decompiling lookahead to guess that that
+                // last name was a label.
+                decompiler.addName(name);
+                decompiler.addEOL(Token.COLON);
+
+                if (labelSet == null) {
+                    labelSet = new Hashtable();
+                } else if (labelSet.containsKey(name)) {
+                    reportError("msg.dup.label");
+                }
+
+                boolean firstLabel;
+                if (statementLabel == null) {
+                    firstLabel = true;
+                    statementLabel = pn;
+                } else {
+                    // Discard multiple label nodes and use only
+                    // the first: it allows to simplify IRFactory
+                    firstLabel = false;
+                }
+                labelSet.put(name, statementLabel);
+                try {
+                    pn = statementHelper(statementLabel);
+                } finally {
+                    labelSet.remove(name);
+                }
+                if (firstLabel) {
+                    pn = nf.createLabeledStatement(statementLabel, pn);
+                }
+                return pn;
+            }
+            break;
+          }
+
+          default: {
+            int lineno = ts.getLineno();
+            pn = expr(false);
+            pn = nf.createExprStatement(pn, lineno);
+            break;
+          }
+        }
+
+        int ttFlagged = peekFlaggedToken();
+        switch (ttFlagged & CLEAR_TI_MASK) {
+          case Token.SEMI:
+            // Consume ';' as a part of expression
+            consumeToken();
+            break;
+          case Token.ERROR:
+          case Token.EOF:
+          case Token.RC:
+            // Autoinsert ;
+            break;
+          default:
+            if ((ttFlagged & TI_AFTER_EOL) == 0) {
+                // Report error if no EOL or autoinsert ; otherwise
+                reportError("msg.no.semi.stmt");
+            }
+            break;
+        }
+        decompiler.addEOL(Token.SEMI);
+
+        return pn;
+    }
+
+    /**
+     * Returns whether or not the bits in the mask have changed to all set.
+     * @param before bits before change
+     * @param after bits after change
+     * @param mask mask for bits
+     * @return true if all the bits in the mask are set in "after" but not 
+     *              "before"
+     */
+    private static final boolean nowAllSet(int before, int after, int mask)
+    {
+        return ((before & mask) != mask) && ((after & mask) == mask);
+    }
+    
+    private Node returnOrYield(int tt, boolean exprContext)
+        throws IOException, ParserException
+    {
+        if (!insideFunction()) {
+            reportError(tt == Token.RETURN ? "msg.bad.return"
+                                           : "msg.bad.yield");
+        }
+        consumeToken();
+        decompiler.addToken(tt);
+        int lineno = ts.getLineno();
+
+        Node e;
+        /* This is ugly, but we don't want to require a semicolon. */
+        switch (peekTokenOrEOL()) {
+          case Token.SEMI:
+          case Token.RC:
+          case Token.EOF:
+          case Token.EOL:
+          case Token.ERROR:
+          case Token.RB:
+          case Token.RP:
+          case Token.YIELD:
+            e = null;
+            break;
+          default:
+            e = expr(false);
+            break;
+        }
+
+        int before = endFlags;
+        Node ret;
+
+        if (tt == Token.RETURN) {
+            if (e == null ) {
+                endFlags |= Node.END_RETURNS;
+            } else {
+                endFlags |= Node.END_RETURNS_VALUE;
+                hasReturnValue = true;
+            }
+            ret = nf.createReturn(e, lineno);
+            
+            // see if we need a strict mode warning
+            if (nowAllSet(before, endFlags, 
+                          Node.END_RETURNS|Node.END_RETURNS_VALUE))
+            {
+                addStrictWarning("msg.return.inconsistent", "");
+            }
+        } else {
+            endFlags |= Node.END_YIELDS;
+            ret = nf.createYield(e, lineno);
+            if (!exprContext)
+                ret = new Node(Token.EXPR_VOID, ret, lineno);
+        }
+
+        // see if we are mixing yields and value returns.
+        if (nowAllSet(before, endFlags, 
+                      Node.END_YIELDS|Node.END_RETURNS_VALUE))
+        {
+            String name = ((FunctionNode)currentScriptOrFn).getFunctionName();
+            if (name.length() == 0)
+                addError("msg.anon.generator.returns", "");
+            else
+                addError("msg.generator.returns", name);
+        }
+
+        return ret;
+    }
+
+    /**
+     * Parse a 'var' or 'const' statement, or a 'var' init list in a for
+     * statement.
+     * @param inFor true if we are currently in the midst of the init
+     * clause of a for.
+     * @param inStatement true if called in a statement (as opposed to an
+     * expression) context
+     * @param declType A token value: either VAR, CONST, or LET depending on
+     * context.
+     * @return The parsed statement
+     * @throws IOException
+     * @throws ParserException
+     */
+    private Node variables(boolean inFor, int declType)
+        throws IOException, ParserException
+    {
+        Node result = nf.createVariables(declType, ts.getLineno());
+        boolean first = true;
+        for (;;) {
+            Node destructuring = null;
+            String s = null;
+            int tt = peekToken();
+            if (tt == Token.LB || tt == Token.LC) {
+                // Destructuring assignment, e.g., var [a,b] = ...
+                destructuring = primaryExpr();
+            } else {
+                // Simple variable name
+                mustMatchToken(Token.NAME, "msg.bad.var",
+                               Token.name(declType).toLowerCase());
+                s = ts.getString();
+    
+                if (!first)
+                    decompiler.addToken(Token.COMMA);
+                first = false;
+    
+                decompiler.addName(s);
+                defineSymbol(declType, s);
+            }
+    
+            Node init = null;
+            if (matchToken(Token.ASSIGN)) {
+                decompiler.addToken(Token.ASSIGN);
+                init = assignExpr(inFor);
+            }
+    
+            if (destructuring != null) {
+                if (init == null) {
+                    if (!inFor)
+                        reportError("msg.destruct.assign.no.init");
+                    nf.addChildToBack(result, destructuring);
+                } else {
+                    nf.addChildToBack(result,
+                        nf.createDestructuringAssignment(declType,
+                            destructuring, init));
+                }
+            } else {
+                Node name = nf.createName(s);
+                if (init != null)
+                    nf.addChildToBack(name, init);
+                nf.addChildToBack(result, name);
+            }
+    
+            if (!matchToken(Token.COMMA))
+                break;
+        }
+        return result;
+    }
+
+    
+    private Node let(boolean isStatement)
+        throws IOException, ParserException
+    {
+        mustMatchToken(Token.LP, "msg.no.paren.after.let");
+        decompiler.addToken(Token.LP);
+        Node result = nf.createScopeNode(Token.LET, ts.getLineno());
+        pushScope(result);
+        try {
+              Node vars = variables(false, Token.LET);
+              nf.addChildToBack(result, vars);
+              mustMatchToken(Token.RP, "msg.no.paren.let");
+              decompiler.addToken(Token.RP);
+              if (isStatement && peekToken() == Token.LC) {
+                  // let statement
+                  consumeToken();
+                  decompiler.addEOL(Token.LC);
+                  nf.addChildToBack(result, statements(null));
+                  mustMatchToken(Token.RC, "msg.no.curly.let");
+                  decompiler.addToken(Token.RC);
+              } else {
+                  // let expression
+                  result.setType(Token.LETEXPR);
+                  nf.addChildToBack(result, expr(false));
+                  if (isStatement) {
+                      // let expression in statement context
+                      result = nf.createExprStatement(result, ts.getLineno());
+                  }
+              }
+        } finally {
+            popScope();
+        }
+        return result;
+    }
+    
+    void defineSymbol(int declType, String name) {
+        Node.Scope definingScope = currentScope.getDefiningScope(name);
+        Node.Scope.Symbol symbol = definingScope != null 
+                                  ? definingScope.getSymbol(name)
+                                  : null;
+        boolean error = false;
+        if (symbol != null && (symbol.declType == Token.CONST ||
+            declType == Token.CONST))
+        {
+            error = true;
+        } else {
+            switch (declType) {
+              case Token.LET:
+                if (symbol != null && definingScope == currentScope) {
+                    error = symbol.declType == Token.LET;
+                }
+                currentScope.putSymbol(name, 
+                    new Node.Scope.Symbol(declType, name));
+                break;
+                
+              case Token.VAR:
+              case Token.CONST:
+              case Token.FUNCTION:
+                if (symbol != null) {
+                    if (symbol.declType == Token.VAR)
+                        addStrictWarning("msg.var.redecl", name);
+                    else if (symbol.declType == Token.LP) {
+                        addStrictWarning("msg.var.hides.arg", name);
+                    }
+                } else {
+                    currentScriptOrFn.putSymbol(name, 
+                        new Node.Scope.Symbol(declType, name));
+                }
+                break;
+                
+              case Token.LP:
+                if (symbol != null) {
+                    // must be duplicate parameter. Second parameter hides the 
+                    // first, so go ahead and add the second pararameter
+                    addWarning("msg.dup.parms", name);
+                }
+                currentScriptOrFn.putSymbol(name, 
+                    new Node.Scope.Symbol(declType, name));
+                break;
+                
+              default:
+                throw Kit.codeBug();
+            }
+        }
+        if (error) {
+            addError(symbol.declType == Token.CONST ? "msg.const.redecl" :
+                     symbol.declType == Token.LET ? "msg.let.redecl" :
+                     symbol.declType == Token.VAR ? "msg.var.redecl" :
+                     symbol.declType == Token.FUNCTION ? "msg.fn.redecl" :
+                     "msg.parm.redecl", name);
+        }
+    }
+
+    private Node expr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = assignExpr(inForInit);
+        while (matchToken(Token.COMMA)) {
+            decompiler.addToken(Token.COMMA);
+            if (compilerEnv.isStrictMode() && !pn.hasSideEffects())
+                addStrictWarning("msg.no.side.effects", "");
+            if (peekToken() == Token.YIELD) {
+              reportError("msg.yield.parenthesized");
+            }
+            pn = nf.createBinary(Token.COMMA, pn, assignExpr(inForInit));
+        }
+        return pn;
+    }
+
+    private Node assignExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        int tt = peekToken();
+        if (tt == Token.YIELD) {
+            consumeToken();
+            return returnOrYield(tt, true);
+        }
+        Node pn = condExpr(inForInit);
+
+        tt = peekToken();
+        if (Token.FIRST_ASSIGN <= tt && tt <= Token.LAST_ASSIGN) {
+            consumeToken();
+            decompiler.addToken(tt);
+            pn = nf.createAssignment(tt, pn, assignExpr(inForInit));
+        }
+
+        return pn;
+    }
+
+    private Node condExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = orExpr(inForInit);
+
+        if (matchToken(Token.HOOK)) {
+            decompiler.addToken(Token.HOOK);
+            Node ifTrue = assignExpr(false);
+            mustMatchToken(Token.COLON, "msg.no.colon.cond");
+            decompiler.addToken(Token.COLON);
+            Node ifFalse = assignExpr(inForInit);
+            return nf.createCondExpr(pn, ifTrue, ifFalse);
+        }
+
+        return pn;
+    }
+
+    private Node orExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = andExpr(inForInit);
+        if (matchToken(Token.OR)) {
+            decompiler.addToken(Token.OR);
+            pn = nf.createBinary(Token.OR, pn, orExpr(inForInit));
+        }
+
+        return pn;
+    }
+
+    private Node andExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = bitOrExpr(inForInit);
+        if (matchToken(Token.AND)) {
+            decompiler.addToken(Token.AND);
+            pn = nf.createBinary(Token.AND, pn, andExpr(inForInit));
+        }
+
+        return pn;
+    }
+
+    private Node bitOrExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = bitXorExpr(inForInit);
+        while (matchToken(Token.BITOR)) {
+            decompiler.addToken(Token.BITOR);
+            pn = nf.createBinary(Token.BITOR, pn, bitXorExpr(inForInit));
+        }
+        return pn;
+    }
+
+    private Node bitXorExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = bitAndExpr(inForInit);
+        while (matchToken(Token.BITXOR)) {
+            decompiler.addToken(Token.BITXOR);
+            pn = nf.createBinary(Token.BITXOR, pn, bitAndExpr(inForInit));
+        }
+        return pn;
+    }
+
+    private Node bitAndExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = eqExpr(inForInit);
+        while (matchToken(Token.BITAND)) {
+            decompiler.addToken(Token.BITAND);
+            pn = nf.createBinary(Token.BITAND, pn, eqExpr(inForInit));
+        }
+        return pn;
+    }
+
+    private Node eqExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = relExpr(inForInit);
+        for (;;) {
+            int tt = peekToken();
+            switch (tt) {
+              case Token.EQ:
+              case Token.NE:
+              case Token.SHEQ:
+              case Token.SHNE:
+                consumeToken();
+                int decompilerToken = tt;
+                int parseToken = tt;
+                if (compilerEnv.getLanguageVersion() == Context.VERSION_1_2) {
+                    // JavaScript 1.2 uses shallow equality for == and != .
+                    // In addition, convert === and !== for decompiler into
+                    // == and != since the decompiler is supposed to show
+                    // canonical source and in 1.2 ===, !== are allowed
+                    // only as an alias to ==, !=.
+                    switch (tt) {
+                      case Token.EQ:
+                        parseToken = Token.SHEQ;
+                        break;
+                      case Token.NE:
+                        parseToken = Token.SHNE;
+                        break;
+                      case Token.SHEQ:
+                        decompilerToken = Token.EQ;
+                        break;
+                      case Token.SHNE:
+                        decompilerToken = Token.NE;
+                        break;
+                    }
+                }
+                decompiler.addToken(decompilerToken);
+                pn = nf.createBinary(parseToken, pn, relExpr(inForInit));
+                continue;
+            }
+            break;
+        }
+        return pn;
+    }
+
+    private Node relExpr(boolean inForInit)
+        throws IOException, ParserException
+    {
+        Node pn = shiftExpr();
+        for (;;) {
+            int tt = peekToken();
+            switch (tt) {
+              case Token.IN:
+                if (inForInit)
+                    break;
+                // fall through
+              case Token.INSTANCEOF:
+              case Token.LE:
+              case Token.LT:
+              case Token.GE:
+              case Token.GT:
+                consumeToken();
+                decompiler.addToken(tt);
+                pn = nf.createBinary(tt, pn, shiftExpr());
+                continue;
+            }
+            break;
+        }
+        return pn;
+    }
+
+    private Node shiftExpr()
+        throws IOException, ParserException
+    {
+        Node pn = addExpr();
+        for (;;) {
+            int tt = peekToken();
+            switch (tt) {
+              case Token.LSH:
+              case Token.URSH:
+              case Token.RSH:
+                consumeToken();
+                decompiler.addToken(tt);
+                pn = nf.createBinary(tt, pn, addExpr());
+                continue;
+            }
+            break;
+        }
+        return pn;
+    }
+
+    private Node addExpr()
+        throws IOException, ParserException
+    {
+        Node pn = mulExpr();
+        for (;;) {
+            int tt = peekToken();
+            if (tt == Token.ADD || tt == Token.SUB) {
+                consumeToken();
+                decompiler.addToken(tt);
+                // flushNewLines
+                pn = nf.createBinary(tt, pn, mulExpr());
+                continue;
+            }
+            break;
+        }
+
+        return pn;
+    }
+
+    private Node mulExpr()
+        throws IOException, ParserException
+    {
+        Node pn = unaryExpr();
+        for (;;) {
+            int tt = peekToken();
+            switch (tt) {
+              case Token.MUL:
+              case Token.DIV:
+              case Token.MOD:
+                consumeToken();
+                decompiler.addToken(tt);
+                pn = nf.createBinary(tt, pn, unaryExpr());
+                continue;
+            }
+            break;
+        }
+
+        return pn;
+    }
+
+    private Node unaryExpr()
+        throws IOException, ParserException
+    {
+        int tt;
+
+        tt = peekToken();
+
+        switch(tt) {
+        case Token.VOID:
+        case Token.NOT:
+        case Token.BITNOT:
+        case Token.TYPEOF:
+            consumeToken();
+            decompiler.addToken(tt);
+            return nf.createUnary(tt, unaryExpr());
+
+        case Token.ADD:
+            consumeToken();
+            // Convert to special POS token in decompiler and parse tree
+            decompiler.addToken(Token.POS);
+            return nf.createUnary(Token.POS, unaryExpr());
+
+        case Token.SUB:
+            consumeToken();
+            // Convert to special NEG token in decompiler and parse tree
+            decompiler.addToken(Token.NEG);
+            return nf.createUnary(Token.NEG, unaryExpr());
+
+        case Token.INC:
+        case Token.DEC:
+            consumeToken();
+            decompiler.addToken(tt);
+            return nf.createIncDec(tt, false, memberExpr(true));
+
+        case Token.DELPROP:
+            consumeToken();
+            decompiler.addToken(Token.DELPROP);
+            return nf.createUnary(Token.DELPROP, unaryExpr());
+
+        case Token.ERROR:
+            consumeToken();
+            break;
+
+        // XML stream encountered in expression.
+        case Token.LT:
+            if (compilerEnv.isXmlAvailable()) {
+                consumeToken();
+                Node pn = xmlInitializer();
+                return memberExprTail(true, pn);
+            }
+            // Fall thru to the default handling of RELOP
+
+        default:
+            Node pn = memberExpr(true);
+
+            // Don't look across a newline boundary for a postfix incop.
+            tt = peekTokenOrEOL();
+            if (tt == Token.INC || tt == Token.DEC) {
+                consumeToken();
+                decompiler.addToken(tt);
+                return nf.createIncDec(tt, true, pn);
+            }
+            return pn;
+        }
+        return nf.createName("error"); // Only reached on error.Try to continue.
+
+    }
+
+    private Node xmlInitializer() throws IOException
+    {
+        int tt = ts.getFirstXMLToken();
+        if (tt != Token.XML && tt != Token.XMLEND) {
+            reportError("msg.syntax");
+            return null;
+        }
+
+        /* Make a NEW node to append to. */
+        Node pnXML = nf.createLeaf(Token.NEW);
+
+        String xml = ts.getString();
+        boolean fAnonymous = xml.trim().startsWith("<>");
+
+        Node pn = nf.createName(fAnonymous ? "XMLList" : "XML");
+        nf.addChildToBack(pnXML, pn);
+
+        pn = null;
+        Node expr;
+        for (;;tt = ts.getNextXMLToken()) {
+            switch (tt) {
+            case Token.XML:
+                xml = ts.getString();
+                decompiler.addName(xml);
+                mustMatchToken(Token.LC, "msg.syntax");
+                decompiler.addToken(Token.LC);
+                expr = (peekToken() == Token.RC)
+                    ? nf.createString("")
+                    : expr(false);
+                mustMatchToken(Token.RC, "msg.syntax");
+                decompiler.addToken(Token.RC);
+                if (pn == null) {
+                    pn = nf.createString(xml);
+                } else {
+                    pn = nf.createBinary(Token.ADD, pn, nf.createString(xml));
+                }
+                if (ts.isXMLAttribute()) {
+                    /* Need to put the result in double quotes */
+                    expr = nf.createUnary(Token.ESCXMLATTR, expr);
+                    Node prepend = nf.createBinary(Token.ADD,
+                                                   nf.createString("\""),
+                                                   expr);
+                    expr = nf.createBinary(Token.ADD,
+                                           prepend,
+                                           nf.createString("\""));
+                } else {
+                    expr = nf.createUnary(Token.ESCXMLTEXT, expr);
+                }
+                pn = nf.createBinary(Token.ADD, pn, expr);
+                break;
+            case Token.XMLEND:
+                xml = ts.getString();
+                decompiler.addName(xml);
+                if (pn == null) {
+                    pn = nf.createString(xml);
+                } else {
+                    pn = nf.createBinary(Token.ADD, pn, nf.createString(xml));
+                }
+
+                nf.addChildToBack(pnXML, pn);
+                return pnXML;
+            default:
+                reportError("msg.syntax");
+                return null;
+            }
+        }
+    }
+
+    private void argumentList(Node listNode)
+        throws IOException, ParserException
+    {
+        boolean matched;
+        matched = matchToken(Token.RP);
+        if (!matched) {
+            boolean first = true;
+            do {
+                if (!first)
+                    decompiler.addToken(Token.COMMA);
+                first = false;
+                if (peekToken() == Token.YIELD) {
+                    reportError("msg.yield.parenthesized");
+                }
+                nf.addChildToBack(listNode, assignExpr(false));
+            } while (matchToken(Token.COMMA));
+
+            mustMatchToken(Token.RP, "msg.no.paren.arg");
+        }
+        decompiler.addToken(Token.RP);
+    }
+
+    private Node memberExpr(boolean allowCallSyntax)
+        throws IOException, ParserException
+    {
+        int tt;
+
+        Node pn;
+
+        /* Check for new expressions. */
+        tt = peekToken();
+        if (tt == Token.NEW) {
+            /* Eat the NEW token. */
+            consumeToken();
+            decompiler.addToken(Token.NEW);
+
+            /* Make a NEW node to append to. */
+            pn = nf.createCallOrNew(Token.NEW, memberExpr(false));
+
+            if (matchToken(Token.LP)) {
+                decompiler.addToken(Token.LP);
+                /* Add the arguments to pn, if any are supplied. */
+                argumentList(pn);
+            }
+
+            /* XXX there's a check in the C source against
+             * "too many constructor arguments" - how many
+             * do we claim to support?
+             */
+
+            /* Experimental syntax:  allow an object literal to follow a new expression,
+             * which will mean a kind of anonymous class built with the JavaAdapter.
+             * the object literal will be passed as an additional argument to the constructor.
+             */
+            tt = peekToken();
+            if (tt == Token.LC) {
+                nf.addChildToBack(pn, primaryExpr());
+            }
+        } else {
+            pn = primaryExpr();
+        }
+
+        return memberExprTail(allowCallSyntax, pn);
+    }
+
+    private Node memberExprTail(boolean allowCallSyntax, Node pn)
+        throws IOException, ParserException
+    {
+      tailLoop:
+        for (;;) {
+            int tt = peekToken();
+            switch (tt) {
+
+              case Token.DOT:
+              case Token.DOTDOT:
+                {
+                    int memberTypeFlags;
+                    String s;
+
+                    consumeToken();
+                    decompiler.addToken(tt);
+                    memberTypeFlags = 0;
+                    if (tt == Token.DOTDOT) {
+                        mustHaveXML();
+                        memberTypeFlags = Node.DESCENDANTS_FLAG;
+                    }
+                    if (!compilerEnv.isXmlAvailable()) {
+                        mustMatchToken(Token.NAME, "msg.no.name.after.dot");
+                        s = ts.getString();
+                        decompiler.addName(s);
+                        pn = nf.createPropertyGet(pn, null, s, memberTypeFlags);
+                        break;
+                    }
+
+                    tt = nextToken();
+                    switch (tt) {
+                    
+                      // needed for generator.throw();
+                      case Token.THROW:
+                        decompiler.addName("throw");
+                        pn = propertyName(pn, "throw", memberTypeFlags);
+                        break;
+
+                      // handles: name, ns::name, ns::*, ns::[expr]
+                      case Token.NAME:
+                        s = ts.getString();
+                        decompiler.addName(s);
+                        pn = propertyName(pn, s, memberTypeFlags);
+                        break;
+
+                      // handles: *, *::name, *::*, *::[expr]
+                      case Token.MUL:
+                        decompiler.addName("*");
+                        pn = propertyName(pn, "*", memberTypeFlags);
+                        break;
+
+                      // handles: '@attr', '@ns::attr', '@ns::*', '@ns::*',
+                      //          '@::attr', '@::*', '@*', '@*::attr', '@*::*'
+                      case Token.XMLATTR:
+                        decompiler.addToken(Token.XMLATTR);
+                        pn = attributeAccess(pn, memberTypeFlags);
+                        break;
+
+                      default:
+                        reportError("msg.no.name.after.dot");
+                    }
+                }
+                break;
+
+              case Token.DOTQUERY:
+                consumeToken();
+                mustHaveXML();
+                decompiler.addToken(Token.DOTQUERY);
+                pn = nf.createDotQuery(pn, expr(false), ts.getLineno());
+                mustMatchToken(Token.RP, "msg.no.paren");
+                decompiler.addToken(Token.RP);
+                break;
+
+              case Token.LB:
+                consumeToken();
+                decompiler.addToken(Token.LB);
+                pn = nf.createElementGet(pn, null, expr(false), 0);
+                mustMatchToken(Token.RB, "msg.no.bracket.index");
+                decompiler.addToken(Token.RB);
+                break;
+
+              case Token.LP:
+                if (!allowCallSyntax) {
+                    break tailLoop;
+                }
+                consumeToken();
+                decompiler.addToken(Token.LP);
+                pn = nf.createCallOrNew(Token.CALL, pn);
+                /* Add the arguments to pn, if any are supplied. */
+                argumentList(pn);
+                break;
+
+              default:
+                break tailLoop;
+            }
+        }
+        return pn;
+    }
+
+    /*
+     * Xml attribute expression:
+     *   '@attr', '@ns::attr', '@ns::*', '@ns::*', '@*', '@*::attr', '@*::*'
+     */
+    private Node attributeAccess(Node pn, int memberTypeFlags)
+        throws IOException
+    {
+        memberTypeFlags |= Node.ATTRIBUTE_FLAG;
+        int tt = nextToken();
+
+        switch (tt) {
+          // handles: @name, @ns::name, @ns::*, @ns::[expr]
+          case Token.NAME:
+            {
+                String s = ts.getString();
+                decompiler.addName(s);
+                pn = propertyName(pn, s, memberTypeFlags);
+            }
+            break;
+
+          // handles: @*, @*::name, @*::*, @*::[expr]
+          case Token.MUL:
+            decompiler.addName("*");
+            pn = propertyName(pn, "*", memberTypeFlags);
+            break;
+
+          // handles @[expr]
+          case Token.LB:
+            decompiler.addToken(Token.LB);
+            pn = nf.createElementGet(pn, null, expr(false), memberTypeFlags);
+            mustMatchToken(Token.RB, "msg.no.bracket.index");
+            decompiler.addToken(Token.RB);
+            break;
+
+          default:
+            reportError("msg.no.name.after.xmlAttr");
+            pn = nf.createPropertyGet(pn, null, "?", memberTypeFlags);
+            break;
+        }
+
+        return pn;
+    }
+
+    /**
+     * Check if :: follows name in which case it becomes qualified name
+     */
+    private Node propertyName(Node pn, String name, int memberTypeFlags)
+        throws IOException, ParserException
+    {
+        String namespace = null;
+        if (matchToken(Token.COLONCOLON)) {
+            decompiler.addToken(Token.COLONCOLON);
+            namespace = name;
+
+            int tt = nextToken();
+            switch (tt) {
+              // handles name::name
+              case Token.NAME:
+                name = ts.getString();
+                decompiler.addName(name);
+                break;
+
+              // handles name::*
+              case Token.MUL:
+                decompiler.addName("*");
+                name = "*";
+                break;
+
+              // handles name::[expr]
+              case Token.LB:
+                decompiler.addToken(Token.LB);
+                pn = nf.createElementGet(pn, namespace, expr(false),
+                                         memberTypeFlags);
+                mustMatchToken(Token.RB, "msg.no.bracket.index");
+                decompiler.addToken(Token.RB);
+                return pn;
+
+              default:
+                reportError("msg.no.name.after.coloncolon");
+                name = "?";
+            }
+        }
+
+        pn = nf.createPropertyGet(pn, namespace, name, memberTypeFlags);
+        return pn;
+    }
+
+    private Node arrayComprehension(String arrayName, Node expr)
+        throws IOException, ParserException
+    {
+        if (nextToken() != Token.FOR)
+            throw Kit.codeBug(); // shouldn't be here if next token isn't 'for'
+        decompiler.addName(" "); // space after array literal expr
+        decompiler.addToken(Token.FOR);
+        boolean isForEach = false;
+        if (matchToken(Token.NAME)) {
+            decompiler.addName(ts.getString());
+            if (ts.getString().equals("each")) {
+                isForEach = true;
+            } else {
+                reportError("msg.no.paren.for");
+            }
+        }
+        mustMatchToken(Token.LP, "msg.no.paren.for");
+        decompiler.addToken(Token.LP);
+        String name;
+        int tt = peekToken();
+        if (tt == Token.LB || tt == Token.LC) {
+            // handle destructuring assignment
+            name = currentScriptOrFn.getNextTempName();
+            defineSymbol(Token.LP, name);
+            expr = nf.createBinary(Token.COMMA,
+                nf.createAssignment(Token.ASSIGN, primaryExpr(), 
+                                    nf.createName(name)),
+                expr);
+        } else if (tt == Token.NAME) {
+            consumeToken();
+            name = ts.getString();
+            decompiler.addName(name);
+        } else {
+            reportError("msg.bad.var");
+            return nf.createNumber(0);
+        }
+
+        Node init = nf.createName(name);
+        // Define as a let since we want the scope of the variable to
+        // be restricted to the array comprehension
+        defineSymbol(Token.LET, name);
+        
+        mustMatchToken(Token.IN, "msg.in.after.for.name");
+        decompiler.addToken(Token.IN);
+        Node iterator = expr(false);
+        mustMatchToken(Token.RP, "msg.no.paren.for.ctrl");
+        decompiler.addToken(Token.RP);
+        
+        Node body;
+        tt = peekToken();
+        if (tt == Token.FOR) {
+            body = arrayComprehension(arrayName, expr);
+        } else {
+            Node call = nf.createCallOrNew(Token.CALL,
+                nf.createPropertyGet(nf.createName(arrayName), null,
+                                     "push", 0));
+            call.addChildToBack(expr);
+            body = new Node(Token.EXPR_VOID, call, ts.getLineno());
+            if (tt == Token.IF) {
+                consumeToken();
+                decompiler.addToken(Token.IF);
+                int lineno = ts.getLineno();
+                Node cond = condition();
+                body = nf.createIf(cond, body, null, lineno);
+            }
+            mustMatchToken(Token.RB, "msg.no.bracket.arg");
+            decompiler.addToken(Token.RB);
+        }
+
+        Node loop = enterLoop(null, true);
+        try {
+            return nf.createForIn(Token.LET, loop, init, iterator, body,
+                                  isForEach);
+        } finally {
+            exitLoop(false);
+        }
+    }
+    
+    private Node primaryExpr()
+        throws IOException, ParserException
+    {
+        Node pn;
+
+        int ttFlagged = nextFlaggedToken();
+        int tt = ttFlagged & CLEAR_TI_MASK;
+
+        switch(tt) {
+
+          case Token.FUNCTION:
+            return function(FunctionNode.FUNCTION_EXPRESSION);
+
+          case Token.LB: {
+            ObjArray elems = new ObjArray();
+            int skipCount = 0;
+            int destructuringLen = 0;
+            decompiler.addToken(Token.LB);
+            boolean after_lb_or_comma = true;
+            for (;;) {
+                tt = peekToken();
+
+                if (tt == Token.COMMA) {
+                    consumeToken();
+                    decompiler.addToken(Token.COMMA);
+                    if (!after_lb_or_comma) {
+                        after_lb_or_comma = true;
+                    } else {
+                        elems.add(null);
+                        ++skipCount;
+                    }
+                } else if (tt == Token.RB) {
+                    consumeToken();
+                    decompiler.addToken(Token.RB);
+                    // for ([a,] in obj) is legal, but for ([a] in obj) is 
+                    // not since we have both key and value supplied. The
+                    // trick is that [a,] and [a] are equivalent in other
+                    // array literal contexts. So we calculate a special
+                    // length value just for destructuring assignment.
+                    destructuringLen = elems.size() + 
+                                       (after_lb_or_comma ? 1 : 0);
+                    break;
+                } else if (skipCount == 0 && elems.size() == 1 &&
+                           tt == Token.FOR)
+                {
+                    Node scopeNode = nf.createScopeNode(Token.ARRAYCOMP, 
+                                                        ts.getLineno());
+                    String tempName = currentScriptOrFn.getNextTempName();
+                    pushScope(scopeNode);
+                    try {
+                        defineSymbol(Token.LET, tempName);
+                        Node expr = (Node) elems.get(0);
+                        Node block = nf.createBlock(ts.getLineno());
+                        Node init = new Node(Token.EXPR_VOID, 
+                            nf.createAssignment(Token.ASSIGN, 
+                                nf.createName(tempName),
+                                nf.createCallOrNew(Token.NEW,
+                                    nf.createName("Array"))), ts.getLineno());
+                        block.addChildToBack(init);
+                        block.addChildToBack(arrayComprehension(tempName, 
+                            expr));
+                        scopeNode.addChildToBack(block);
+                        scopeNode.addChildToBack(nf.createName(tempName));
+                        return scopeNode;
+                    } finally {
+                        popScope();
+                    }
+                } else {
+                    if (!after_lb_or_comma) {
+                        reportError("msg.no.bracket.arg");
+                    }
+                    elems.add(assignExpr(false));
+                    after_lb_or_comma = false;
+                }
+            }
+            return nf.createArrayLiteral(elems, skipCount, destructuringLen);
+          }
+
+          case Token.LC: {
+            ObjArray elems = new ObjArray();
+            decompiler.addToken(Token.LC);
+            if (!matchToken(Token.RC)) {
+
+                boolean first = true;
+            commaloop:
+                do {
+                    Object property;
+
+                    if (!first)
+                        decompiler.addToken(Token.COMMA);
+                    else
+                        first = false;
+
+                    tt = peekToken();
+                    switch(tt) {
+                      case Token.NAME:
+                      case Token.STRING:
+                        consumeToken();
+                        // map NAMEs to STRINGs in object literal context
+                        // but tell the decompiler the proper type
+                        String s = ts.getString();
+                        if (tt == Token.NAME) {
+                            if (s.equals("get") &&
+                                peekToken() == Token.NAME) {
+                                decompiler.addToken(Token.GET);
+                                consumeToken();
+                                s = ts.getString();
+                                decompiler.addName(s);
+                                property = ScriptRuntime.getIndexObject(s);
+                                if (!getterSetterProperty(elems, property,
+                                                          true))
+                                    break commaloop;
+                                break;
+                            } else if (s.equals("set") &&
+                                       peekToken() == Token.NAME) {
+                                decompiler.addToken(Token.SET);
+                                consumeToken();
+                                s = ts.getString();
+                                decompiler.addName(s);
+                                property = ScriptRuntime.getIndexObject(s);
+                                if (!getterSetterProperty(elems, property,
+                                                          false))
+                                    break commaloop;
+                                break;
+                            }
+                            decompiler.addName(s);
+                        } else {
+                            decompiler.addString(s);
+                        }
+                        property = ScriptRuntime.getIndexObject(s);
+                        plainProperty(elems, property);
+                        break;
+
+                      case Token.NUMBER:
+                        consumeToken();
+                        double n = ts.getNumber();
+                        decompiler.addNumber(n);
+                        property = ScriptRuntime.getIndexObject(n);
+                        plainProperty(elems, property);
+                        break;
+
+                      case Token.RC:
+                        // trailing comma is OK.
+                        break commaloop;
+                    default:
+                        reportError("msg.bad.prop");
+                        break commaloop;
+                    }
+                } while (matchToken(Token.COMMA));
+
+                mustMatchToken(Token.RC, "msg.no.brace.prop");
+            }
+            decompiler.addToken(Token.RC);
+            return nf.createObjectLiteral(elems);
+          }
+          
+          case Token.LET:
+            decompiler.addToken(Token.LET);
+            return let(false);
+
+          case Token.LP:
+
+            /* Brendan's IR-jsparse.c makes a new node tagged with
+             * TOK_LP here... I'm not sure I understand why.  Isn't
+             * the grouping already implicit in the structure of the
+             * parse tree?  also TOK_LP is already overloaded (I
+             * think) in the C IR as 'function call.'  */
+            decompiler.addToken(Token.LP);
+            pn = expr(false);
+            pn.putProp(Node.PARENTHESIZED_PROP, Boolean.TRUE);
+            decompiler.addToken(Token.RP);
+            mustMatchToken(Token.RP, "msg.no.paren");
+            return pn;
+
+          case Token.XMLATTR:
+            mustHaveXML();
+            decompiler.addToken(Token.XMLATTR);
+            pn = attributeAccess(null, 0);
+            return pn;
+
+          case Token.NAME: {
+            String name = ts.getString();
+            if ((ttFlagged & TI_CHECK_LABEL) != 0) {
+                if (peekToken() == Token.COLON) {
+                    // Do not consume colon, it is used as unwind indicator
+                    // to return to statementHelper.
+                    // XXX Better way?
+                    return nf.createLabel(ts.getLineno());
+                }
+            }
+
+            decompiler.addName(name);
+            if (compilerEnv.isXmlAvailable()) {
+                pn = propertyName(null, name, 0);
+            } else {
+                pn = nf.createName(name);
+            }
+            return pn;
+          }
+
+          case Token.NUMBER: {
+            double n = ts.getNumber();
+            decompiler.addNumber(n);
+            return nf.createNumber(n);
+          }
+
+          case Token.STRING: {
+            String s = ts.getString();
+            decompiler.addString(s);
+            return nf.createString(s);
+          }
+
+          case Token.DIV:
+          case Token.ASSIGN_DIV: {
+            // Got / or /= which should be treated as regexp in fact
+            ts.readRegExp(tt);
+            String flags = ts.regExpFlags;
+            ts.regExpFlags = null;
+            String re = ts.getString();
+            decompiler.addRegexp(re, flags);
+            /*APPJET*/
+            int index = currentScriptOrFn.addRegexp
+                (re, flags, getCurrentLineNumber());
+            return nf.createRegExp(index);
+          }
+
+          case Token.NULL:
+          case Token.THIS:
+          case Token.FALSE:
+          case Token.TRUE:
+            decompiler.addToken(tt);
+            return nf.createLeaf(tt);
+
+          case Token.RESERVED:
+            reportError("msg.reserved.id");
+            break;
+
+          case Token.ERROR:
+            /* the scanner or one of its subroutines reported the error. */
+            break;
+
+          case Token.EOF:
+            reportError("msg.unexpected.eof");
+            break;
+
+          default:
+            reportError("msg.syntax");
+            break;
+        }
+        return null;    // should never reach here
+    }
+
+    private void plainProperty(ObjArray elems, Object property)
+            throws IOException {
+        mustMatchToken(Token.COLON, "msg.no.colon.prop");
+
+        // OBJLIT is used as ':' in object literal for
+        // decompilation to solve spacing ambiguity.
+        decompiler.addToken(Token.OBJECTLIT);
+        elems.add(property);
+        elems.add(assignExpr(false));
+    }
+
+    private boolean getterSetterProperty(ObjArray elems, Object property,
+                                         boolean isGetter) throws IOException {
+        Node f = function(FunctionNode.FUNCTION_EXPRESSION);
+        if (f.getType() != Token.FUNCTION) {
+            reportError("msg.bad.prop");
+            return false;
+        }
+        int fnIndex = f.getExistingIntProp(Node.FUNCTION_PROP);
+        FunctionNode fn = currentScriptOrFn.getFunctionNode(fnIndex);
+        if (fn.getFunctionName().length() != 0) {
+            reportError("msg.bad.prop");
+            return false;
+        }
+        elems.add(property);
+        if (isGetter) {
+            elems.add(nf.createUnary(Token.GET, f));
+        } else {
+            elems.add(nf.createUnary(Token.SET, f));
+        }
+        return true;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/PolicySecurityController.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/PolicySecurityController.java
new file mode 100644
index 0000000..c4d3d7e
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/PolicySecurityController.java
@@ -0,0 +1,223 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.lang.ref.SoftReference;
+import java.lang.reflect.UndeclaredThrowableException;
+import java.security.AccessController;
+import java.security.CodeSource;
+import java.security.Policy;
+import java.security.PrivilegedAction;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+import java.security.SecureClassLoader;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+import org.mozilla.classfile.ByteCode;
+import org.mozilla.classfile.ClassFileWriter;
+
+/**
+ * A security controller relying on Java {@link Policy} in effect. When you use
+ * this security controller, your securityDomain objects must be instances of
+ * {@link CodeSource} representing the location from where you load your 
+ * scripts. Any Java policy "grant" statements matching the URL and certificate
+ * in code sources will apply to the scripts. If you specify any certificates 
+ * within your {@link CodeSource} objects, it is your responsibility to verify
+ * (or not) that the script source files are signed in whatever 
+ * implementation-specific way you're using.
+ * @author Attila Szegedi
+ */
+public class PolicySecurityController extends SecurityController
+{
+    private static final byte[] secureCallerImplBytecode = loadBytecode();
+
+    // We're storing a CodeSource -> (ClassLoader -> SecureRenderer), since we
+    // need to have one renderer per class loader. We're using weak hash maps
+    // and soft references all the way, since we don't want to interfere with
+    // cleanup of either CodeSource or ClassLoader objects.
+    private static final Map callers = new WeakHashMap();
+    
+    public Class getStaticSecurityDomainClassInternal() {
+        return CodeSource.class;
+    }
+
+    private static class Loader extends SecureClassLoader
+    implements GeneratedClassLoader
+    {
+        private final CodeSource codeSource;
+        
+        Loader(ClassLoader parent, CodeSource codeSource)
+        {
+            super(parent);
+            this.codeSource = codeSource;
+        }
+
+        public Class defineClass(String name, byte[] data)
+        {
+            return defineClass(name, data, 0, data.length, codeSource);
+        }
+        
+        public void linkClass(Class cl)
+        {
+            resolveClass(cl);
+        }
+    }
+    
+    public GeneratedClassLoader createClassLoader(final ClassLoader parent, 
+            final Object securityDomain)
+    {
+        return (Loader)AccessController.doPrivileged(
+            new PrivilegedAction()
+            {
+                public Object run()
+                {
+                    return new Loader(parent, (CodeSource)securityDomain);
+                }
+            });
+    }
+
+    public Object getDynamicSecurityDomain(Object securityDomain)
+    {
+        // No separate notion of dynamic security domain - just return what was
+        // passed in.
+        return securityDomain;
+    }
+
+    public Object callWithDomain(final Object securityDomain, final Context cx, 
+            Callable callable, Scriptable scope, Scriptable thisObj, 
+            Object[] args)
+    {
+        // Run in doPrivileged as we might be checked for "getClassLoader" 
+        // runtime permission
+        final ClassLoader classLoader = (ClassLoader)AccessController.doPrivileged(
+            new PrivilegedAction() {
+                public Object run() {
+                    return cx.getApplicationClassLoader();
+                }
+            });
+        final CodeSource codeSource = (CodeSource)securityDomain;
+        Map classLoaderMap;
+        synchronized(callers)
+        {
+            classLoaderMap = (Map)callers.get(codeSource);
+            if(classLoaderMap == null)
+            {
+                classLoaderMap = new WeakHashMap();
+                callers.put(codeSource, classLoaderMap);
+            }
+        }
+        SecureCaller caller;
+        synchronized(classLoaderMap)
+        {
+            SoftReference ref = (SoftReference)classLoaderMap.get(classLoader);
+            if(ref != null)
+            {
+                caller = (SecureCaller)ref.get();
+            }
+            else
+            {
+                caller = null;
+            }
+            if(caller == null)
+            {
+                try
+                {
+                    // Run in doPrivileged as we'll be checked for 
+                    // "createClassLoader" runtime permission
+                    caller = (SecureCaller)AccessController.doPrivileged(
+                            new PrivilegedExceptionAction()
+                    {
+                        public Object run() throws Exception
+                        {
+                            Loader loader = new Loader(classLoader, 
+                                    codeSource);
+                            Class c = loader.defineClass(
+                                    SecureCaller.class.getName() + "Impl", 
+                                    secureCallerImplBytecode);
+                            return c.newInstance();
+                        }
+                    });
+                    classLoaderMap.put(classLoader, new SoftReference(caller));
+                }
+                catch(PrivilegedActionException ex)
+                {
+                    throw new UndeclaredThrowableException(ex.getCause());
+                }
+            }
+        }
+        return caller.call(callable, cx, scope, thisObj, args);
+    }
+    
+    public abstract static class SecureCaller
+    {
+        public abstract Object call(Callable callable, Context cx, Scriptable scope, 
+                Scriptable thisObj, Object[] args);
+    }
+    
+    
+    private static byte[] loadBytecode()
+    {
+        String secureCallerClassName = SecureCaller.class.getName();
+        ClassFileWriter cfw = new ClassFileWriter(
+                secureCallerClassName + "Impl", secureCallerClassName, 
+                "<generated>");
+        cfw.startMethod("<init>", "()V", ClassFileWriter.ACC_PUBLIC);
+        cfw.addALoad(0);
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, secureCallerClassName, 
+                "<init>", "()V");
+        cfw.add(ByteCode.RETURN);
+        cfw.stopMethod((short)1);
+        String callableCallSig = 
+            "Lorg/mozilla/javascript/Context;" +
+            "Lorg/mozilla/javascript/Scriptable;" +
+            "Lorg/mozilla/javascript/Scriptable;" +
+            "[Ljava/lang/Object;)Ljava/lang/Object;";
+        
+        cfw.startMethod("call",
+                "(Lorg/mozilla/javascript/Callable;" + callableCallSig,
+                (short)(ClassFileWriter.ACC_PUBLIC
+                        | ClassFileWriter.ACC_FINAL));
+        for(int i = 1; i < 6; ++i) {
+            cfw.addALoad(i);
+        }
+        cfw.addInvoke(ByteCode.INVOKEINTERFACE, 
+                "org/mozilla/javascript/Callable", "call", 
+                "(" + callableCallSig);
+        cfw.add(ByteCode.ARETURN);
+        cfw.stopMethod((short)6);
+        return cfw.toByteArray();
+    }
+}
\ No newline at end of file
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Ref.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Ref.java
new file mode 100644
index 0000000..1e237bc
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Ref.java
@@ -0,0 +1,64 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+
+/**
+ * Generic notion of reference object that know how to query/modify the
+ * target objects based on some property/index.
+ */
+public abstract class Ref implements Serializable
+{
+    public boolean has(Context cx)
+    {
+        return true;
+    }
+
+    public abstract Object get(Context cx);
+
+    public abstract Object set(Context cx, Object value);
+
+    public boolean delete(Context cx)
+    {
+        return false;
+    }
+
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RefCallable.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RefCallable.java
new file mode 100644
index 0000000..6d4b61c
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RefCallable.java
@@ -0,0 +1,59 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@mir2.org
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * Object that can allows assignments to the result of function calls.
+ */
+public interface RefCallable extends Callable
+{
+    /**
+     * Perform function call in reference context.
+     * The args array reference should not be stored in any object that is
+     * can be GC-reachable after this method returns. If this is necessary,
+     * for example, to implement {@link Ref} methods, then store args.clone(),
+     * not args array itself.
+     *
+     * @param cx the current Context for this thread
+     * @param thisObj the JavaScript <code>this</code> object
+     * @param args the array of arguments
+     */
+    public Ref refCall(Context cx, Scriptable thisObj, Object[] args);
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RegExpProxy.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RegExpProxy.java
new file mode 100644
index 0000000..ac29c6e
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RegExpProxy.java
@@ -0,0 +1,71 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * A proxy for the regexp package, so that the regexp package can be
+ * loaded optionally.
+ *
+ * @author Norris Boyd
+ */
+public interface RegExpProxy
+{
+    // Types of regexp actions
+
+    public static final int RA_MATCH   = 1;
+    public static final int RA_REPLACE = 2;
+    public static final int RA_SEARCH  = 3;
+
+    public boolean isRegExp(Scriptable obj);
+
+    public Object compileRegExp(Context cx, String source, String flags);
+
+    public Scriptable wrapRegExp(Context cx, Scriptable scope,
+                                 Object compiled);
+
+    public Object action(Context cx, Scriptable scope,
+                         Scriptable thisObj, Object[] args,
+                         int actionType);
+
+    public int find_split(Context cx, Scriptable scope, String target,
+                          String separator, Scriptable re,
+                          int[] ip, int[] matchlen,
+                          boolean[] matched, String[][] parensp);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RhinoException.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RhinoException.java
new file mode 100644
index 0000000..b7f4a4d
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/RhinoException.java
@@ -0,0 +1,306 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+package org.mozilla.javascript;
+
+import java.io.CharArrayWriter;
+import java.io.File;
+import java.io.FilenameFilter;
+import java.io.PrintStream;
+import java.io.PrintWriter;
+import java.util.List;
+import java.util.ArrayList;
+
+/**
+ * The class of exceptions thrown by the JavaScript engine.
+ */
+public abstract class RhinoException extends RuntimeException
+{
+    RhinoException()
+    {
+        Evaluator e = Context.createInterpreter();
+        if (e != null)
+            e.captureStackInfo(this);
+    }
+
+    RhinoException(String details)
+    {
+        super(details);
+        Evaluator e = Context.createInterpreter();
+        if (e != null)
+            e.captureStackInfo(this);
+    }
+
+    public final String getMessage()
+    {
+        String details = details();
+        if (sourceName == null || lineNumber <= 0) {
+            return details;
+        }
+        StringBuffer buf = new StringBuffer(details);
+        buf.append(" (");
+        if (sourceName != null) {
+            buf.append(sourceName);
+        }
+        if (lineNumber > 0) {
+            buf.append('#');
+            buf.append(lineNumber);
+        }
+        buf.append(')');
+        return buf.toString();
+    }
+
+    public String details()
+    {
+        return super.getMessage();
+    }
+
+    /**
+     * Get the uri of the script source containing the error, or null
+     * if that information is not available.
+     */
+    public final String sourceName()
+    {
+        return sourceName;
+    }
+
+    /**
+     * Initialize the uri of the script source containing the error.
+     *
+     * @param sourceName the uri of the script source responsible for the error.
+     *                   It should not be <tt>null</tt>.
+     *
+     * @throws IllegalStateException if the method is called more then once.
+     */
+    public final void initSourceName(String sourceName)
+    {
+        if (sourceName == null) throw new IllegalArgumentException();
+        if (this.sourceName != null) throw new IllegalStateException();
+        this.sourceName = sourceName;
+    }
+
+    /**
+     * Returns the line number of the statement causing the error,
+     * or zero if not available.
+     */
+    public final int lineNumber()
+    {
+        return lineNumber;
+    }
+
+    /**
+     * Initialize the line number of the script statement causing the error.
+     *
+     * @param lineNumber the line number in the script source.
+     *                   It should be positive number.
+     *
+     * @throws IllegalStateException if the method is called more then once.
+     */
+    public final void initLineNumber(int lineNumber)
+    {
+        if (lineNumber <= 0) throw new IllegalArgumentException(String.valueOf(lineNumber));
+        if (this.lineNumber > 0) throw new IllegalStateException();
+        this.lineNumber = lineNumber;
+    }
+
+    /**
+     * The column number of the location of the error, or zero if unknown.
+     */
+    public final int columnNumber()
+    {
+        return columnNumber;
+    }
+
+    /**
+     * Initialize the column number of the script statement causing the error.
+     *
+     * @param columnNumber the column number in the script source.
+     *                     It should be positive number.
+     *
+     * @throws IllegalStateException if the method is called more then once.
+     */
+    public final void initColumnNumber(int columnNumber)
+    {
+        if (columnNumber <= 0) throw new IllegalArgumentException(String.valueOf(columnNumber));
+        if (this.columnNumber > 0) throw new IllegalStateException();
+        this.columnNumber = columnNumber;
+    }
+
+    /**
+     * The source text of the line causing the error, or null if unknown.
+     */
+    public final String lineSource()
+    {
+        return lineSource;
+    }
+
+    /**
+     * Initialize the text of the source line containing the error.
+     *
+     * @param lineSource the text of the source line responsible for the error.
+     *                   It should not be <tt>null</tt>.
+     *
+     * @throws IllegalStateException if the method is called more then once.
+     */
+    public final void initLineSource(String lineSource)
+    {
+        if (lineSource == null) throw new IllegalArgumentException();
+        if (this.lineSource != null) throw new IllegalStateException();
+        this.lineSource = lineSource;
+    }
+
+    final void recordErrorOrigin(String sourceName, int lineNumber,
+                                 String lineSource, int columnNumber)
+    {
+        // XXX: for compatibility allow for now -1 to mean 0
+        if (lineNumber == -1) {
+            lineNumber = 0;
+        }
+
+        if (sourceName != null) {
+            initSourceName(sourceName);
+        }
+        if (lineNumber != 0) {
+            initLineNumber(lineNumber);
+        }
+        if (lineSource != null) {
+            initLineSource(lineSource);
+        }
+        if (columnNumber != 0) {
+            initColumnNumber(columnNumber);
+        }
+    }
+
+    private String generateStackTrace()
+    {
+        // Get stable reference to work properly with concurrent access
+        CharArrayWriter writer = new CharArrayWriter();
+        super.printStackTrace(new PrintWriter(writer));
+        String origStackTrace = writer.toString();
+        Evaluator e = Context.createInterpreter();
+        if (e != null)
+            return e.getPatchedStack(this, origStackTrace);
+        return null;
+    }
+
+    /**
+     * Get a string representing the script stack of this exception.
+     * If optimization is enabled, this corresponds to all java stack elements
+     * with a source name ending with ".js".
+     * @return a script stack dump
+     * @since 1.6R6
+     */
+    public String getScriptStackTrace()
+    {
+        return getScriptStackTrace(new FilenameFilter() {
+            public boolean accept(File dir, String name) {
+                return name.endsWith(".js");
+            }
+        });
+    }
+
+    /**
+     * Get a string representing the script stack of this exception.
+     * If optimization is enabled, this corresponds to all java stack elements
+     * with a source name matching the <code>filter</code>.
+     * @param filter the file name filter to determine whether a file is a 
+     *               script file
+     * @return a script stack dump
+     * @since 1.6R6
+     */
+    public String getScriptStackTrace(FilenameFilter filter)
+    {
+        List interpreterStack;
+        Evaluator interpreter = Context.createInterpreter();
+        if (interpreter != null)
+            interpreterStack = interpreter.getScriptStack(this);
+        else
+            interpreterStack = new ArrayList();
+        int interpreterStackIndex = 0;
+        StringBuffer buffer = new StringBuffer();
+        String lineSeparator = SecurityUtilities.getSystemProperty("line.separator");
+        StackTraceElement[] stack = getStackTrace();
+        for (int i = 0; i < stack.length; i++) {
+            StackTraceElement e = stack[i];
+            String name = e.getFileName();
+            if (e.getLineNumber() > -1 && name != null &&
+                filter.accept(null, name))
+            {
+                buffer.append("\tat ");
+                buffer.append(e.getFileName());
+                buffer.append(':');
+                buffer.append(e.getLineNumber());
+                buffer.append(lineSeparator);
+            } else if (interpreterStack != null &&
+                "org.mozilla.javascript.Interpreter".equals(e.getClassName()) &&
+                "interpretLoop".equals(e.getMethodName()))
+            {
+                buffer.append(interpreterStack.get(interpreterStackIndex++));
+            }
+        }
+        return buffer.toString();
+    }
+
+    public void printStackTrace(PrintWriter s)
+    {
+        if (interpreterStackInfo == null) {
+            super.printStackTrace(s);
+        } else {
+            s.print(generateStackTrace());
+        }
+    }
+
+    public void printStackTrace(PrintStream s)
+    {
+        if (interpreterStackInfo == null) {
+            super.printStackTrace(s);
+        } else {
+            s.print(generateStackTrace());
+        }
+    }
+
+    private String sourceName;
+    private int lineNumber;
+    private String lineSource;
+    private int columnNumber;
+
+    Object interpreterStackInfo;
+    int[] interpreterLineData;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Script.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Script.java
new file mode 100644
index 0000000..4721ead
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Script.java
@@ -0,0 +1,73 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * All compiled scripts implement this interface.
+ * <p>
+ * This class encapsulates script execution relative to an
+ * object scope.
+ * @since 1.3
+ * @author Norris Boyd
+ */
+
+public interface Script {
+
+    /**
+     * Execute the script.
+     * <p>
+     * The script is executed in a particular runtime Context, which
+     * must be associated with the current thread.
+     * The script is executed relative to a scope--definitions and
+     * uses of global top-level variables and functions will access
+     * properties of the scope object. For compliant ECMA
+     * programs, the scope must be an object that has been initialized
+     * as a global object using <code>Context.initStandardObjects</code>.
+     * <p>
+     *
+     * @param cx the Context associated with the current thread
+     * @param scope the scope to execute relative to
+     * @return the result of executing the script
+     * @see org.mozilla.javascript.Context#initStandardObjects()
+     */
+    public Object exec(Context cx, Scriptable scope);
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptOrFnNode.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptOrFnNode.java
new file mode 100644
index 0000000..9ea6d1f
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptOrFnNode.java
@@ -0,0 +1,241 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.util.ArrayList;
+
+public class ScriptOrFnNode extends Node.Scope {
+
+    public ScriptOrFnNode(int nodeType) {
+        super(nodeType);
+        symbols = new ArrayList(4);
+        setParent(null);
+    }
+
+    public final String getSourceName() { return sourceName; }
+
+    public final void setSourceName(String sourceName) {
+        this.sourceName = sourceName;
+    }
+
+    public final int getEncodedSourceStart() { return encodedSourceStart; }
+
+    public final int getEncodedSourceEnd() { return encodedSourceEnd; }
+
+    public final void setEncodedSourceBounds(int start, int end) {
+        this.encodedSourceStart = start;
+        this.encodedSourceEnd = end;
+    }
+
+    public final int getBaseLineno() { return this.lineno; }
+
+    public final void setBaseLineno(int lineno) {
+        // One time action
+        if (lineno < 0 || this.lineno >= 0) Kit.codeBug();
+        this.lineno = lineno;
+    }
+
+    public final int getEndLineno() { return endLineno; }
+
+    public final void setEndLineno(int lineno) {
+        // One time action
+        if (lineno < 0 || endLineno >= 0) Kit.codeBug();
+        endLineno = lineno;
+    }
+
+    public final int getFunctionCount() {
+        if (functions == null) { return 0; }
+        return functions.size();
+    }
+
+    public final FunctionNode getFunctionNode(int i) {
+        return (FunctionNode)functions.get(i);
+    }
+
+    public final int addFunction(FunctionNode fnNode) {
+        if (fnNode == null) Kit.codeBug();
+        if (functions == null) { functions = new ObjArray(); }
+        functions.add(fnNode);
+        return functions.size() - 1;
+    }
+
+    public final int getRegexpCount() {
+        if (regexps == null) { return 0; }
+        return regexps.size() / 2;
+    }
+
+    public final String getRegexpString(int index) {
+        return (String)regexps.get(index * 2);
+    }
+
+    public final String getRegexpFlags(int index) {
+        return (String)regexps.get(index * 2 + 1);
+    }
+
+    /*APPJET*/public final int getRegexpLineno(int index) {
+        return (Integer)regexpLinenos.get(index);
+    }
+
+    public final int addRegexp(String string, String flags, /*APPJET*/
+                               int lineno) {
+        if (string == null) Kit.codeBug();
+        if (regexps == null) {
+            /*APPJET*/
+            regexps = new ObjArray();
+            regexpLinenos = new ObjArray();
+        }
+        regexps.add(string);
+        regexps.add(flags);
+        /*APPJET*/regexpLinenos.add(lineno);
+        return regexps.size() / 2 - 1;
+    }
+
+    public int getIndexForNameNode(Node nameNode) {
+        if (variableNames == null) throw Kit.codeBug();
+        Node.Scope node = nameNode.getScope();
+        Symbol symbol = node == null ? null 
+                                     : node.getSymbol(nameNode.getString());
+        if (symbol == null)
+            return -1;
+        return symbol.index;
+    }
+
+    public final String getParamOrVarName(int index) {
+        if (variableNames == null) throw Kit.codeBug();
+        return variableNames[index];
+    }
+
+    public final int getParamCount() {
+        return paramCount;
+    }
+
+    public final int getParamAndVarCount() {
+        if (variableNames == null) throw Kit.codeBug();
+        return symbols.size();
+    }
+
+    public final String[] getParamAndVarNames() {
+        if (variableNames == null) throw Kit.codeBug();
+        return variableNames;
+    }
+
+    public final boolean[] getParamAndVarConst() {
+        if (variableNames == null) throw Kit.codeBug();
+        return isConsts;
+    }
+
+    void addSymbol(Symbol symbol) {
+        if (variableNames != null) throw Kit.codeBug();
+        if (symbol.declType == Token.LP) {
+            paramCount++;
+        }
+        symbols.add(symbol);
+    }
+
+    /**
+     * Assign every symbol a unique integer index. Generate arrays of variable 
+     * names and constness that can be indexed by those indices.
+     * 
+     * @param flattenAllTables if true, flatten all symbol tables, included
+     * nested block scope symbol tables. If false, just flatten the script's
+     * or function's symbol table.
+     */
+    void flattenSymbolTable(boolean flattenAllTables) {
+        if (!flattenAllTables) {
+            ArrayList newSymbols = new ArrayList();
+            if (this.symbolTable != null) {
+                // Just replace "symbols" with the symbols in this object's
+                // symbol table. Can't just work from symbolTable map since
+                // we need to retain duplicate parameters.
+                for (int i=0; i < symbols.size(); i++) {
+                    Symbol symbol = (Symbol) symbols.get(i);
+                    if (symbol.containingTable == this) {
+                        newSymbols.add(symbol);
+                    }
+                }
+            }
+            symbols = newSymbols;
+        }
+        variableNames = new String[symbols.size()];
+        isConsts = new boolean[symbols.size()];
+        for (int i=0; i < symbols.size(); i++) {
+            Symbol symbol = (Symbol) symbols.get(i);
+            variableNames[i] = symbol.name;
+            isConsts[i] = symbol.declType == Token.CONST;
+            symbol.index = i;
+        }
+    }
+
+    public final Object getCompilerData()
+    {
+        return compilerData;
+    }
+
+    public final void setCompilerData(Object data)
+    {
+        if (data == null) throw new IllegalArgumentException();
+        // Can only call once
+        if (compilerData != null) throw new IllegalStateException();
+        compilerData = data;
+    }
+    
+    public String getNextTempName()
+    {
+        return "$" + tempNumber++;
+    }
+
+    private int encodedSourceStart;
+    private int encodedSourceEnd;
+    private String sourceName;
+    private int endLineno = -1;
+
+    private ObjArray functions;
+    private ObjArray regexps;
+    /*APPJET*/ private ObjArray regexpLinenos;
+    
+    private ArrayList symbols;
+    private int paramCount = 0;
+    private String[] variableNames;
+    private boolean[] isConsts;
+
+    private Object compilerData;
+    private int tempNumber = 0;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java
new file mode 100644
index 0000000..f879581
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptRuntime.java
@@ -0,0 +1,3830 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Patrick Beard
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Ethan Hugg
+ *   Bob Jervis
+ *   Roger Lawrence
+ *   Terry Lucas
+ *   Frank Mitchell
+ *   Milen Nankov
+ *   Hannes Wallnoefer
+ *   Andrew Wason
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+import java.lang.reflect.*;
+import java.text.MessageFormat;
+import java.util.Locale;
+import java.util.ResourceBundle;
+
+import org.mozilla.javascript.xml.XMLObject;
+import org.mozilla.javascript.xml.XMLLib;
+
+/**
+ * This is the class that implements the runtime.
+ *
+ * @author Norris Boyd
+ */
+
+public class ScriptRuntime {
+
+    /**
+     * No instances should be created.
+     */
+    protected ScriptRuntime() {
+    }
+
+    private static class NoSuchMethodShim implements Callable {
+        String methodName;
+        Callable noSuchMethodMethod;
+
+        NoSuchMethodShim(Callable noSuchMethodMethod, String methodName)
+        {
+            this.noSuchMethodMethod = noSuchMethodMethod;
+            this.methodName = methodName;
+        }
+        /**
+         * Perform the call.
+         *
+         * @param cx the current Context for this thread
+         * @param scope the scope to use to resolve properties.
+         * @param thisObj the JavaScript <code>this</code> object
+         * @param args the array of arguments
+         * @return the result of the call
+         */
+        public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                           Object[] args)
+        {
+            Object[] nestedArgs = new Object[2];
+
+            nestedArgs[0] = methodName;
+            nestedArgs[1] = newArrayLiteral(args, null, cx, scope);
+            return noSuchMethodMethod.call(cx, scope, thisObj, nestedArgs);
+        }
+
+    }
+    /*
+     * There's such a huge space (and some time) waste for the Foo.class
+     * syntax: the compiler sticks in a test of a static field in the
+     * enclosing class for null and the code for creating the class value.
+     * It has to do this since the reference has to get pushed off until
+     * execution time (i.e. can't force an early load), but for the
+     * 'standard' classes - especially those in java.lang, we can trust
+     * that they won't cause problems by being loaded early.
+     */
+
+    public final static Class
+        BooleanClass      = Kit.classOrNull("java.lang.Boolean"),
+        ByteClass         = Kit.classOrNull("java.lang.Byte"),
+        CharacterClass    = Kit.classOrNull("java.lang.Character"),
+        ClassClass        = Kit.classOrNull("java.lang.Class"),
+        DoubleClass       = Kit.classOrNull("java.lang.Double"),
+        FloatClass        = Kit.classOrNull("java.lang.Float"),
+        IntegerClass      = Kit.classOrNull("java.lang.Integer"),
+        LongClass         = Kit.classOrNull("java.lang.Long"),
+        NumberClass       = Kit.classOrNull("java.lang.Number"),
+        ObjectClass       = Kit.classOrNull("java.lang.Object"),
+        ShortClass        = Kit.classOrNull("java.lang.Short"),
+        StringClass       = Kit.classOrNull("java.lang.String"),
+        DateClass         = Kit.classOrNull("java.util.Date");
+
+    public final static Class
+        ContextClass
+            = Kit.classOrNull("org.mozilla.javascript.Context"),
+        ContextFactoryClass
+            = Kit.classOrNull("org.mozilla.javascript.ContextFactory"),
+        FunctionClass
+            = Kit.classOrNull("org.mozilla.javascript.Function"),
+        ScriptableClass
+            = Kit.classOrNull("org.mozilla.javascript.Scriptable"),
+        ScriptableObjectClass
+            = Kit.classOrNull("org.mozilla.javascript.ScriptableObject");
+
+    private static final String[] lazilyNames = {
+        "RegExp",        "org.mozilla.javascript.regexp.NativeRegExp",
+        "Packages",      "org.mozilla.javascript.NativeJavaTopPackage",
+        "java",          "org.mozilla.javascript.NativeJavaTopPackage",
+        "javax",         "org.mozilla.javascript.NativeJavaTopPackage",
+        "org",           "org.mozilla.javascript.NativeJavaTopPackage",
+        "com",           "org.mozilla.javascript.NativeJavaTopPackage",
+        "edu",           "org.mozilla.javascript.NativeJavaTopPackage",
+        "net",           "org.mozilla.javascript.NativeJavaTopPackage",
+        "getClass",      "org.mozilla.javascript.NativeJavaTopPackage",
+        "JavaAdapter",   "org.mozilla.javascript.JavaAdapter",
+        "JavaImporter",  "org.mozilla.javascript.ImporterTopLevel",
+        "Continuation",  "org.mozilla.javascript.continuations.Continuation",
+        //	TODO	Grotesque hack using literal string (xml) just to minimize
+		//			changes for now
+        "XML",           "(xml)",
+        "XMLList",       "(xml)",
+        "Namespace",     "(xml)",
+        "QName",         "(xml)",
+    };
+
+    private static final Object LIBRARY_SCOPE_KEY = new Object();
+
+    public static boolean isRhinoRuntimeType(Class cl)
+    {
+        if (cl.isPrimitive()) {
+            return (cl != Character.TYPE);
+        } else {
+            return (cl == StringClass || cl == BooleanClass
+                    || NumberClass.isAssignableFrom(cl)
+                    || ScriptableClass.isAssignableFrom(cl));
+        }
+    }
+
+    public static ScriptableObject initStandardObjects(Context cx,
+                                                       ScriptableObject scope,
+                                                       boolean sealed)
+    {
+        if (scope == null) {
+            scope = new NativeObject();
+        }
+        scope.associateValue(LIBRARY_SCOPE_KEY, scope);
+        (new ClassCache()).associate(scope);
+
+        BaseFunction.init(scope, sealed);
+        NativeObject.init(scope, sealed);
+
+        Scriptable objectProto = ScriptableObject.getObjectPrototype(scope);
+
+        // Function.prototype.__proto__ should be Object.prototype
+        Scriptable functionProto = ScriptableObject.getFunctionPrototype(scope);
+        functionProto.setPrototype(objectProto);
+
+        // Set the prototype of the object passed in if need be
+        if (scope.getPrototype() == null)
+            scope.setPrototype(objectProto);
+
+        // must precede NativeGlobal since it's needed therein
+        NativeError.init(scope, sealed);
+        NativeGlobal.init(cx, scope, sealed);
+
+        NativeArray.init(scope, sealed);
+        if (cx.getOptimizationLevel() > 0) {
+            // When optimizing, attempt to fulfill all requests for new Array(N)
+            // with a higher threshold before switching to a sparse 
+            // representation
+            NativeArray.setMaximumInitialCapacity(200000);            
+        }
+        NativeString.init(scope, sealed);
+        NativeBoolean.init(scope, sealed);
+        NativeNumber.init(scope, sealed);
+        NativeDate.init(scope, sealed);
+        NativeMath.init(scope, sealed);
+
+        NativeWith.init(scope, sealed);
+        NativeCall.init(scope, sealed);
+        NativeScript.init(scope, sealed);
+        
+        NativeIterator.init(scope, sealed); // Also initializes NativeGenerator
+
+        boolean withXml = cx.hasFeature(Context.FEATURE_E4X) && 
+                          cx.getE4xImplementationFactory() != null;
+
+        for (int i = 0; i != lazilyNames.length; i += 2) {
+            String topProperty = lazilyNames[i];
+            String className = lazilyNames[i + 1];
+            if (!withXml && className.equals("(xml)")) {
+                continue;
+            } else if (withXml && className.equals("(xml)")) {
+				className = cx.getE4xImplementationFactory().
+                               getImplementationClassName();
+			}
+            new LazilyLoadedCtor(scope, topProperty, className, sealed);
+        }
+
+        return scope;
+    }
+
+    public static ScriptableObject getLibraryScopeOrNull(Scriptable scope)
+    {
+        ScriptableObject libScope;
+        libScope = (ScriptableObject)ScriptableObject.
+                       getTopScopeValue(scope, LIBRARY_SCOPE_KEY);
+        return libScope;
+    }
+
+    // It is public so NativeRegExp can access it.
+    public static boolean isJSLineTerminator(int c)
+    {
+        // Optimization for faster check for eol character:
+        // they do not have 0xDFD0 bits set
+        if ((c & 0xDFD0) != 0) {
+            return false;
+        }
+        return c == '\n' || c == '\r' || c == 0x2028 || c == 0x2029;
+    }
+
+    public static Boolean wrapBoolean(boolean b)
+    {
+        return b ? Boolean.TRUE : Boolean.FALSE;
+    }
+
+    public static Integer wrapInt(int i)
+    {
+        return new Integer(i);
+    }
+
+    public static Number wrapNumber(double x)
+    {
+        if (x != x) {
+            return ScriptRuntime.NaNobj;
+        }
+        return new Double(x);
+    }
+
+    /**
+     * Convert the value to a boolean.
+     *
+     * See ECMA 9.2.
+     */
+    public static boolean toBoolean(Object val)
+    {
+        for (;;) {
+            if (val instanceof Boolean)
+                return ((Boolean) val).booleanValue();
+            if (val == null || val == Undefined.instance)
+                return false;
+            if (val instanceof String)
+                return ((String) val).length() != 0;
+            if (val instanceof Number) {
+                double d = ((Number) val).doubleValue();
+                return (d == d && d != 0.0);
+            }
+            if (val instanceof Scriptable) {
+                if (val instanceof ScriptableObject &&
+                    ((ScriptableObject) val).avoidObjectDetection())
+                {
+                    return false;
+                }
+                if (Context.getContext().isVersionECMA1()) {
+                    // pure ECMA
+                    return true;
+                }
+                // ECMA extension
+                val = ((Scriptable) val).getDefaultValue(BooleanClass);
+                if (val instanceof Scriptable)
+                    throw errorWithClassName("msg.primitive.expected", val);
+                continue;
+            }
+            warnAboutNonJSObject(val);
+            return true;
+        }
+    }
+
+    /**
+     * Convert the value to a number.
+     *
+     * See ECMA 9.3.
+     */
+    public static double toNumber(Object val)
+    {
+        for (;;) {
+            if (val instanceof Number)
+                return ((Number) val).doubleValue();
+            if (val == null)
+                return +0.0;
+            if (val == Undefined.instance)
+                return NaN;
+            if (val instanceof String)
+                return toNumber((String) val);
+            if (val instanceof Boolean)
+                return ((Boolean) val).booleanValue() ? 1 : +0.0;
+            if (val instanceof Scriptable) {
+                val = ((Scriptable) val).getDefaultValue(NumberClass);
+                if (val instanceof Scriptable)
+                    throw errorWithClassName("msg.primitive.expected", val);
+                continue;
+            }
+            warnAboutNonJSObject(val);
+            return NaN;
+        }
+    }
+
+    public static double toNumber(Object[] args, int index) {
+        return (index < args.length) ? toNumber(args[index]) : NaN;
+    }
+
+    // Can not use Double.NaN defined as 0.0d / 0.0 as under the Microsoft VM,
+    // versions 2.01 and 3.0P1, that causes some uses (returns at least) of
+    // Double.NaN to be converted to 1.0.
+    // So we use ScriptRuntime.NaN instead of Double.NaN.
+    public static final double
+        NaN = Double.longBitsToDouble(0x7ff8000000000000L);
+
+    // A similar problem exists for negative zero.
+    public static final double
+        negativeZero = Double.longBitsToDouble(0x8000000000000000L);
+
+    public static final Double NaNobj = new Double(NaN);
+
+    /*
+     * Helper function for toNumber, parseInt, and TokenStream.getToken.
+     */
+    static double stringToNumber(String s, int start, int radix) {
+        char digitMax = '9';
+        char lowerCaseBound = 'a';
+        char upperCaseBound = 'A';
+        int len = s.length();
+        if (radix < 10) {
+            digitMax = (char) ('0' + radix - 1);
+        }
+        if (radix > 10) {
+            lowerCaseBound = (char) ('a' + radix - 10);
+            upperCaseBound = (char) ('A' + radix - 10);
+        }
+        int end;
+        double sum = 0.0;
+        for (end=start; end < len; end++) {
+            char c = s.charAt(end);
+            int newDigit;
+            if ('0' <= c && c <= digitMax)
+                newDigit = c - '0';
+            else if ('a' <= c && c < lowerCaseBound)
+                newDigit = c - 'a' + 10;
+            else if ('A' <= c && c < upperCaseBound)
+                newDigit = c - 'A' + 10;
+            else
+                break;
+            sum = sum*radix + newDigit;
+        }
+        if (start == end) {
+            return NaN;
+        }
+        if (sum >= 9007199254740992.0) {
+            if (radix == 10) {
+                /* If we're accumulating a decimal number and the number
+                 * is >= 2^53, then the result from the repeated multiply-add
+                 * above may be inaccurate.  Call Java to get the correct
+                 * answer.
+                 */
+                try {
+                    return Double.valueOf(s.substring(start, end)).doubleValue();
+                } catch (NumberFormatException nfe) {
+                    return NaN;
+                }
+            } else if (radix == 2 || radix == 4 || radix == 8 ||
+                       radix == 16 || radix == 32)
+            {
+                /* The number may also be inaccurate for one of these bases.
+                 * This happens if the addition in value*radix + digit causes
+                 * a round-down to an even least significant mantissa bit
+                 * when the first dropped bit is a one.  If any of the
+                 * following digits in the number (which haven't been added
+                 * in yet) are nonzero then the correct action would have
+                 * been to round up instead of down.  An example of this
+                 * occurs when reading the number 0x1000000000000081, which
+                 * rounds to 0x1000000000000000 instead of 0x1000000000000100.
+                 */
+                int bitShiftInChar = 1;
+                int digit = 0;
+
+                final int SKIP_LEADING_ZEROS = 0;
+                final int FIRST_EXACT_53_BITS = 1;
+                final int AFTER_BIT_53         = 2;
+                final int ZEROS_AFTER_54 = 3;
+                final int MIXED_AFTER_54 = 4;
+
+                int state = SKIP_LEADING_ZEROS;
+                int exactBitsLimit = 53;
+                double factor = 0.0;
+                boolean bit53 = false;
+                // bit54 is the 54th bit (the first dropped from the mantissa)
+                boolean bit54 = false;
+
+                for (;;) {
+                    if (bitShiftInChar == 1) {
+                        if (start == end)
+                            break;
+                        digit = s.charAt(start++);
+                        if ('0' <= digit && digit <= '9')
+                            digit -= '0';
+                        else if ('a' <= digit && digit <= 'z')
+                            digit -= 'a' - 10;
+                        else
+                            digit -= 'A' - 10;
+                        bitShiftInChar = radix;
+                    }
+                    bitShiftInChar >>= 1;
+                    boolean bit = (digit & bitShiftInChar) != 0;
+
+                    switch (state) {
+                      case SKIP_LEADING_ZEROS:
+                          if (bit) {
+                            --exactBitsLimit;
+                            sum = 1.0;
+                            state = FIRST_EXACT_53_BITS;
+                        }
+                        break;
+                      case FIRST_EXACT_53_BITS:
+                           sum *= 2.0;
+                        if (bit)
+                            sum += 1.0;
+                        --exactBitsLimit;
+                        if (exactBitsLimit == 0) {
+                            bit53 = bit;
+                            state = AFTER_BIT_53;
+                        }
+                        break;
+                      case AFTER_BIT_53:
+                        bit54 = bit;
+                        factor = 2.0;
+                        state = ZEROS_AFTER_54;
+                        break;
+                      case ZEROS_AFTER_54:
+                        if (bit) {
+                            state = MIXED_AFTER_54;
+                        }
+                        // fallthrough
+                      case MIXED_AFTER_54:
+                        factor *= 2;
+                        break;
+                    }
+                }
+                switch (state) {
+                  case SKIP_LEADING_ZEROS:
+                    sum = 0.0;
+                    break;
+                  case FIRST_EXACT_53_BITS:
+                  case AFTER_BIT_53:
+                    // do nothing
+                    break;
+                  case ZEROS_AFTER_54:
+                    // x1.1 -> x1 + 1 (round up)
+                    // x0.1 -> x0 (round down)
+                    if (bit54 & bit53)
+                        sum += 1.0;
+                    sum *= factor;
+                    break;
+                  case MIXED_AFTER_54:
+                    // x.100...1.. -> x + 1 (round up)
+                    // x.0anything -> x (round down)
+                    if (bit54)
+                        sum += 1.0;
+                    sum *= factor;
+                    break;
+                }
+            }
+            /* We don't worry about inaccurate numbers for any other base. */
+        }
+        return sum;
+    }
+
+
+    /**
+     * ToNumber applied to the String type
+     *
+     * See ECMA 9.3.1
+     */
+    public static double toNumber(String s) {
+        int len = s.length();
+        int start = 0;
+        char startChar;
+        for (;;) {
+            if (start == len) {
+                // Empty or contains only whitespace
+                return +0.0;
+            }
+            startChar = s.charAt(start);
+            if (!Character.isWhitespace(startChar))
+                break;
+            start++;
+        }
+
+        if (startChar == '0') {
+            if (start + 2 < len) {
+                int c1 = s.charAt(start + 1);
+                if (c1 == 'x' || c1 == 'X') {
+                    // A hexadecimal number
+                    return stringToNumber(s, start + 2, 16);
+                }
+            }
+        } else if (startChar == '+' || startChar == '-') {
+            if (start + 3 < len && s.charAt(start + 1) == '0') {
+                int c2 = s.charAt(start + 2);
+                if (c2 == 'x' || c2 == 'X') {
+                    // A hexadecimal number with sign
+                    double val = stringToNumber(s, start + 3, 16);
+                    return startChar == '-' ? -val : val;
+                }
+            }
+        }
+
+        int end = len - 1;
+        char endChar;
+        while (Character.isWhitespace(endChar = s.charAt(end)))
+            end--;
+        if (endChar == 'y') {
+            // check for "Infinity"
+            if (startChar == '+' || startChar == '-')
+                start++;
+            if (start + 7 == end && s.regionMatches(start, "Infinity", 0, 8))
+                return startChar == '-'
+                    ? Double.NEGATIVE_INFINITY
+                    : Double.POSITIVE_INFINITY;
+            return NaN;
+        }
+        // A non-hexadecimal, non-infinity number:
+        // just try a normal floating point conversion
+        String sub = s.substring(start, end+1);
+        if (MSJVM_BUG_WORKAROUNDS) {
+            // The MS JVM will accept non-conformant strings
+            // rather than throwing a NumberFormatException
+            // as it should.
+            for (int i=sub.length()-1; i >= 0; i--) {
+                char c = sub.charAt(i);
+                if (('0' <= c && c <= '9') || c == '.' ||
+                    c == 'e' || c == 'E'  ||
+                    c == '+' || c == '-')
+                    continue;
+                return NaN;
+            }
+        }
+        try {
+            return Double.valueOf(sub).doubleValue();
+        } catch (NumberFormatException ex) {
+            return NaN;
+        }
+    }
+
+    /**
+     * Helper function for builtin objects that use the varargs form.
+     * ECMA function formal arguments are undefined if not supplied;
+     * this function pads the argument array out to the expected
+     * length, if necessary.
+     */
+    public static Object[] padArguments(Object[] args, int count) {
+        if (count < args.length)
+            return args;
+
+        int i;
+        Object[] result = new Object[count];
+        for (i = 0; i < args.length; i++) {
+            result[i] = args[i];
+        }
+
+        for (; i < count; i++) {
+            result[i] = Undefined.instance;
+        }
+
+        return result;
+    }
+
+    /* Work around Microsoft Java VM bugs. */
+    private final static boolean MSJVM_BUG_WORKAROUNDS = true;
+
+    public static String escapeString(String s)
+    {
+        return escapeString(s, '"');
+    }
+
+    /**
+     * For escaping strings printed by object and array literals; not quite
+     * the same as 'escape.'
+     */
+    public static String escapeString(String s, char escapeQuote)
+    {
+        if (!(escapeQuote == '"' || escapeQuote == '\'')) Kit.codeBug();
+        StringBuffer sb = null;
+
+        for(int i = 0, L = s.length(); i != L; ++i) {
+            int c = s.charAt(i);
+
+            if (' ' <= c && c <= '~' && c != escapeQuote && c != '\\') {
+                // an ordinary print character (like C isprint()) and not "
+                // or \ .
+                if (sb != null) {
+                    sb.append((char)c);
+                }
+                continue;
+            }
+            if (sb == null) {
+                sb = new StringBuffer(L + 3);
+                sb.append(s);
+                sb.setLength(i);
+            }
+
+            int escape = -1;
+            switch (c) {
+                case '\b':  escape = 'b';  break;
+                case '\f':  escape = 'f';  break;
+                case '\n':  escape = 'n';  break;
+                case '\r':  escape = 'r';  break;
+                case '\t':  escape = 't';  break;
+                case 0xb:   escape = 'v';  break; // Java lacks \v.
+                case ' ':   escape = ' ';  break;
+                case '\\':  escape = '\\'; break;
+            }
+            if (escape >= 0) {
+                // an \escaped sort of character
+                sb.append('\\');
+                sb.append((char)escape);
+            } else if (c == escapeQuote) {
+                sb.append('\\');
+                sb.append(escapeQuote);
+            } else {
+                int hexSize;
+                if (c < 256) {
+                    // 2-digit hex
+                    sb.append("\\x");
+                    hexSize = 2;
+                } else {
+                    // Unicode.
+                    sb.append("\\u");
+                    hexSize = 4;
+                }
+                // append hexadecimal form of c left-padded with 0
+                for (int shift = (hexSize - 1) * 4; shift >= 0; shift -= 4) {
+                    int digit = 0xf & (c >> shift);
+                    int hc = (digit < 10) ? '0' + digit : 'a' - 10 + digit;
+                    sb.append((char)hc);
+                }
+            }
+        }
+        return (sb == null) ? s : sb.toString();
+    }
+
+    static boolean isValidIdentifierName(String s)
+    {
+        int L = s.length();
+        if (L == 0)
+            return false;
+        if (!Character.isJavaIdentifierStart(s.charAt(0)))
+            return false;
+        for (int i = 1; i != L; ++i) {
+            if (!Character.isJavaIdentifierPart(s.charAt(i)))
+                return false;
+        }
+        return !TokenStream.isKeyword(s);
+    }
+
+    /**
+     * Convert the value to a string.
+     *
+     * See ECMA 9.8.
+     */
+    public static String toString(Object val) {
+        for (;;) {
+            if (val == null) {
+                return "null";
+            }
+            if (val == Undefined.instance) {
+                return "undefined";
+            }
+            if (val instanceof String) {
+                return (String)val;
+            }
+            if (val instanceof Number) {
+                // XXX should we just teach NativeNumber.stringValue()
+                // about Numbers?
+                return numberToString(((Number)val).doubleValue(), 10);
+            }
+            if (val instanceof Scriptable) {
+                val = ((Scriptable) val).getDefaultValue(StringClass);
+                if (val instanceof Scriptable) {
+                    throw errorWithClassName("msg.primitive.expected", val);
+                }
+                continue;
+            }
+            return val.toString();
+        }
+    }
+
+    static String defaultObjectToString(Scriptable obj)
+    {
+        return "[object " + obj.getClassName() + ']';
+    }
+
+    public static String toString(Object[] args, int index)
+    {
+        return (index < args.length) ? toString(args[index]) : "undefined";
+    }
+
+    /**
+     * Optimized version of toString(Object) for numbers.
+     */
+    public static String toString(double val) {
+        return numberToString(val, 10);
+    }
+
+    public static String numberToString(double d, int base) {
+        if (d != d)
+            return "NaN";
+        if (d == Double.POSITIVE_INFINITY)
+            return "Infinity";
+        if (d == Double.NEGATIVE_INFINITY)
+            return "-Infinity";
+        if (d == 0.0)
+            return "0";
+
+        if ((base < 2) || (base > 36)) {
+            throw Context.reportRuntimeError1(
+                "msg.bad.radix", Integer.toString(base));
+        }
+
+        if (base != 10) {
+            return DToA.JS_dtobasestr(base, d);
+        } else {
+            StringBuffer result = new StringBuffer();
+            DToA.JS_dtostr(result, DToA.DTOSTR_STANDARD, 0, d);
+            return result.toString();
+        }
+
+    }
+
+    static String uneval(Context cx, Scriptable scope, Object value)
+    {
+        if (value == null) {
+            return "null";
+        }
+        if (value == Undefined.instance) {
+            return "undefined";
+        }
+        if (value instanceof String) {
+            String escaped = escapeString((String)value);
+            StringBuffer sb = new StringBuffer(escaped.length() + 2);
+            sb.append('\"');
+            sb.append(escaped);
+            sb.append('\"');
+            return sb.toString();
+        }
+        if (value instanceof Number) {
+            double d = ((Number)value).doubleValue();
+            if (d == 0 && 1 / d < 0) {
+                return "-0";
+            }
+            return toString(d);
+        }
+        if (value instanceof Boolean) {
+            return toString(value);
+        }
+        if (value instanceof Scriptable) {
+            Scriptable obj = (Scriptable)value;
+            // Wrapped Java objects won't have "toSource" and will report
+            // errors for get()s of nonexistent name, so use has() first
+            if (ScriptableObject.hasProperty(obj, "toSource")) {
+                Object v = ScriptableObject.getProperty(obj, "toSource");
+                if (v instanceof Function) {
+                    Function f = (Function)v;
+                    return toString(f.call(cx, scope, obj, emptyArgs));
+                }
+            }
+            return toString(value);
+        }
+        warnAboutNonJSObject(value);
+        return value.toString();
+    }
+
+    static String defaultObjectToSource(Context cx, Scriptable scope,
+                                        Scriptable thisObj, Object[] args)
+    {
+        boolean toplevel, iterating;
+        if (cx.iterating == null) {
+            toplevel = true;
+            iterating = false;
+            cx.iterating = new ObjToIntMap(31);
+        } else {
+            toplevel = false;
+            iterating = cx.iterating.has(thisObj);
+        }
+
+        StringBuffer result = new StringBuffer(128);
+        if (toplevel) {
+            result.append("(");
+        }
+        result.append('{');
+
+        // Make sure cx.iterating is set to null when done
+        // so we don't leak memory
+        try {
+            if (!iterating) {
+                cx.iterating.intern(thisObj); // stop recursion.
+                Object[] ids = thisObj.getIds();
+                for (int i=0; i < ids.length; i++) {
+                    Object id = ids[i];
+                    Object value;
+                    if (id instanceof Integer) {
+                        int intId = ((Integer)id).intValue();
+                        value = thisObj.get(intId, thisObj);
+                        if (value == Scriptable.NOT_FOUND)
+                            continue;   // a property has been removed
+                        if (i > 0)
+                            result.append(", ");
+                        result.append(intId);
+                    } else {
+                        String strId = (String)id;
+                        value = thisObj.get(strId, thisObj);
+                        if (value == Scriptable.NOT_FOUND)
+                            continue;   // a property has been removed
+                        if (i > 0)
+                            result.append(", ");
+                        if (ScriptRuntime.isValidIdentifierName(strId)) {
+                            result.append(strId);
+                        } else {
+                            result.append('\'');
+                            result.append(
+                                ScriptRuntime.escapeString(strId, '\''));
+                            result.append('\'');
+                        }
+                    }
+                    result.append(':');
+                    result.append(ScriptRuntime.uneval(cx, scope, value));
+                }
+            }
+        } finally {
+            if (toplevel) {
+                cx.iterating = null;
+            }
+        }
+
+        result.append('}');
+        if (toplevel) {
+            result.append(')');
+        }
+        return result.toString();
+    }
+
+    public static Scriptable toObject(Scriptable scope, Object val)
+    {
+        if (val instanceof Scriptable) {
+            return (Scriptable)val;
+        }
+        return toObject(Context.getContext(), scope, val);
+    }
+
+    public static Scriptable toObjectOrNull(Context cx, Object obj)
+    {
+        if (obj instanceof Scriptable) {
+            return (Scriptable)obj;
+        } else if (obj != null && obj != Undefined.instance) {
+            return toObject(cx, getTopCallScope(cx), obj);
+        }
+        return null;
+    }
+
+    /**
+     * @deprecated Use {@link #toObject(Scriptable, Object)} instead.
+     */
+    public static Scriptable toObject(Scriptable scope, Object val,
+                                      Class staticClass)
+    {
+        if (val instanceof Scriptable) {
+            return (Scriptable)val;
+        }
+        return toObject(Context.getContext(), scope, val);
+    }
+
+    /**
+     * Convert the value to an object.
+     *
+     * See ECMA 9.9.
+     */
+    public static Scriptable toObject(Context cx, Scriptable scope, Object val)
+    {
+        if (val instanceof Scriptable) {
+            return (Scriptable) val;
+        }
+        if (val == null) {
+            throw typeError0("msg.null.to.object");
+        }
+        if (val == Undefined.instance) {
+            throw typeError0("msg.undef.to.object");
+        }
+        String className = val instanceof String ? "String" :
+                           val instanceof Number ? "Number" :
+                           val instanceof Boolean ? "Boolean" :
+                           null;
+        if (className != null) {
+            Object[] args = { val };
+            scope = ScriptableObject.getTopLevelScope(scope);
+            return newObject(cx, scope, className, args);
+        }
+
+        // Extension: Wrap as a LiveConnect object.
+        Object wrapped = cx.getWrapFactory().wrap(cx, scope, val, null);
+        if (wrapped instanceof Scriptable)
+            return (Scriptable) wrapped;
+        throw errorWithClassName("msg.invalid.type", val);
+    }
+
+    /**
+     * @deprecated Use {@link #toObject(Context, Scriptable, Object)} instead.
+     */
+    public static Scriptable toObject(Context cx, Scriptable scope, Object val,
+                                      Class staticClass)
+    {
+        return toObject(cx, scope, val);
+    }
+
+    /**
+     * @deprecated The method is only present for compatibility.
+     */
+    public static Object call(Context cx, Object fun, Object thisArg,
+                              Object[] args, Scriptable scope)
+    {
+        if (!(fun instanceof Function)) {
+            throw notFunctionError(toString(fun));
+        }
+        Function function = (Function)fun;
+        Scriptable thisObj = toObjectOrNull(cx, thisArg);
+        if (thisObj == null) {
+            throw undefCallError(thisObj, "function");
+        }
+        return function.call(cx, scope, thisObj, args);
+    }
+
+    public static Scriptable newObject(Context cx, Scriptable scope,
+                                       String constructorName, Object[] args)
+    {
+        scope = ScriptableObject.getVeryTopLevelScope(scope); // APPJET
+        Function ctor = getExistingCtor(cx, scope, constructorName);
+        if (args == null) { args = ScriptRuntime.emptyArgs; }
+        return ctor.construct(cx, scope, args);
+    }
+
+    /**
+     *
+     * See ECMA 9.4.
+     */
+    public static double toInteger(Object val) {
+        return toInteger(toNumber(val));
+    }
+
+    // convenience method
+    public static double toInteger(double d) {
+        // if it's NaN
+        if (d != d)
+            return +0.0;
+
+        if (d == 0.0 ||
+            d == Double.POSITIVE_INFINITY ||
+            d == Double.NEGATIVE_INFINITY)
+            return d;
+
+        if (d > 0.0)
+            return Math.floor(d);
+        else
+            return Math.ceil(d);
+    }
+
+    public static double toInteger(Object[] args, int index) {
+        return (index < args.length) ? toInteger(args[index]) : +0.0;
+    }
+
+    /**
+     *
+     * See ECMA 9.5.
+     */
+    public static int toInt32(Object val)
+    {
+        // short circuit for common integer values
+        if (val instanceof Integer)
+            return ((Integer)val).intValue();
+
+        return toInt32(toNumber(val));
+    }
+
+    public static int toInt32(Object[] args, int index) {
+        return (index < args.length) ? toInt32(args[index]) : 0;
+    }
+
+    public static int toInt32(double d) {
+        int id = (int)d;
+        if (id == d) {
+            // This covers -0.0 as well
+            return id;
+        }
+
+        if (d != d
+            || d == Double.POSITIVE_INFINITY
+            || d == Double.NEGATIVE_INFINITY)
+        {
+            return 0;
+        }
+
+        d = (d >= 0) ? Math.floor(d) : Math.ceil(d);
+
+        double two32 = 4294967296.0;
+        d = Math.IEEEremainder(d, two32);
+        // (double)(long)d == d should hold here
+
+        long l = (long)d;
+        // returning (int)d does not work as d can be outside int range
+        // but the result must always be 32 lower bits of l
+        return (int)l;
+    }
+
+    /**
+     * See ECMA 9.6.
+     * @return long value representing 32 bits unsigned integer
+     */
+    public static long toUint32(double d) {
+        long l = (long)d;
+        if (l == d) {
+            // This covers -0.0 as well
+            return l & 0xffffffffL;
+        }
+
+        if (d != d
+            || d == Double.POSITIVE_INFINITY
+            || d == Double.NEGATIVE_INFINITY)
+        {
+            return 0;
+        }
+
+        d = (d >= 0) ? Math.floor(d) : Math.ceil(d);
+
+        // 0x100000000 gives me a numeric overflow...
+        double two32 = 4294967296.0;
+        l = (long)Math.IEEEremainder(d, two32);
+
+        return l & 0xffffffffL;
+    }
+
+    public static long toUint32(Object val) {
+        return toUint32(toNumber(val));
+    }
+
+    /**
+     *
+     * See ECMA 9.7.
+     */
+    public static char toUint16(Object val) {
+        double d = toNumber(val);
+
+        int i = (int)d;
+        if (i == d) {
+            return (char)i;
+        }
+
+        if (d != d
+            || d == Double.POSITIVE_INFINITY
+            || d == Double.NEGATIVE_INFINITY)
+        {
+            return 0;
+        }
+
+        d = (d >= 0) ? Math.floor(d) : Math.ceil(d);
+
+        int int16 = 0x10000;
+        i = (int)Math.IEEEremainder(d, int16);
+
+        return (char)i;
+    }
+
+    // XXX: this is until setDefaultNamespace will learn how to store NS
+    // properly and separates namespace form Scriptable.get etc.
+    private static final String DEFAULT_NS_TAG = "__default_namespace__";
+
+    public static Object setDefaultNamespace(Object namespace, Context cx)
+    {
+        Scriptable scope = cx.currentActivationCall;
+        if (scope == null) {
+            scope = getTopCallScope(cx);
+        }
+
+        XMLLib xmlLib = currentXMLLib(cx);
+        Object ns = xmlLib.toDefaultXmlNamespace(cx, namespace);
+
+        // XXX : this should be in separated namesapce from Scriptable.get/put
+        if (!scope.has(DEFAULT_NS_TAG, scope)) {
+            // XXX: this is racy of cause
+            ScriptableObject.defineProperty(scope, DEFAULT_NS_TAG, ns,
+                                            ScriptableObject.PERMANENT
+                                            | ScriptableObject.DONTENUM);
+        } else {
+            scope.put(DEFAULT_NS_TAG, scope, ns);
+        }
+
+        return Undefined.instance;
+    }
+
+    public static Object searchDefaultNamespace(Context cx)
+    {
+        Scriptable scope = cx.currentActivationCall;
+        if (scope == null) {
+            scope = getTopCallScope(cx);
+        }
+        Object nsObject;
+        for (;;) {
+            Scriptable parent = scope.getParentScope();
+            if (parent == null) {
+                nsObject = ScriptableObject.getProperty(scope, DEFAULT_NS_TAG);
+                if (nsObject == Scriptable.NOT_FOUND) {
+                    return null;
+                }
+                break;
+            }
+            nsObject = scope.get(DEFAULT_NS_TAG, scope);
+            if (nsObject != Scriptable.NOT_FOUND) {
+                break;
+            }
+            scope = parent;
+        }
+        return nsObject;
+    }
+
+    public static Object getTopLevelProp(Scriptable scope, String id) {
+        scope = ScriptableObject.getTopLevelScope(scope);
+        return ScriptableObject.getProperty(scope, id);
+    }
+
+    static Function getExistingCtor(Context cx, Scriptable scope,
+                                    String constructorName)
+    {
+        Object ctorVal = ScriptableObject.getProperty(scope, constructorName);
+        if (ctorVal instanceof Function) {
+            return (Function)ctorVal;
+        }
+        if (ctorVal == Scriptable.NOT_FOUND) {
+            throw Context.reportRuntimeError1(
+                "msg.ctor.not.found", constructorName);
+        } else {
+            throw Context.reportRuntimeError1(
+                "msg.not.ctor", constructorName);
+        }
+    }
+
+    /**
+     * Return -1L if str is not an index or the index value as lower 32
+     * bits of the result.
+     */
+    private static long indexFromString(String str)
+    {
+        // The length of the decimal string representation of
+        //  Integer.MAX_VALUE, 2147483647
+        final int MAX_VALUE_LENGTH = 10;
+
+        int len = str.length();
+        if (len > 0) {
+            int i = 0;
+            boolean negate = false;
+            int c = str.charAt(0);
+            if (c == '-') {
+                if (len > 1) {
+                    c = str.charAt(1);
+                    i = 1;
+                    negate = true;
+                }
+            }
+            c -= '0';
+            if (0 <= c && c <= 9
+                && len <= (negate ? MAX_VALUE_LENGTH + 1 : MAX_VALUE_LENGTH))
+            {
+                // Use negative numbers to accumulate index to handle
+                // Integer.MIN_VALUE that is greater by 1 in absolute value
+                // then Integer.MAX_VALUE
+                int index = -c;
+                int oldIndex = 0;
+                i++;
+                if (index != 0) {
+                    // Note that 00, 01, 000 etc. are not indexes
+                    while (i != len && 0 <= (c = str.charAt(i) - '0') && c <= 9)
+                    {
+                        oldIndex = index;
+                        index = 10 * index - c;
+                        i++;
+                    }
+                }
+                // Make sure all characters were consumed and that it couldn't
+                // have overflowed.
+                if (i == len &&
+                    (oldIndex > (Integer.MIN_VALUE / 10) ||
+                     (oldIndex == (Integer.MIN_VALUE / 10) &&
+                      c <= (negate ? -(Integer.MIN_VALUE % 10)
+                                   : (Integer.MAX_VALUE % 10)))))
+                {
+                    return 0xFFFFFFFFL & (negate ? index : -index);
+                }
+            }
+        }
+        return -1L;
+    }
+
+    /**
+     * If str is a decimal presentation of Uint32 value, return it as long.
+     * Othewise return -1L;
+     */
+    public static long testUint32String(String str)
+    {
+        // The length of the decimal string representation of
+        //  UINT32_MAX_VALUE, 4294967296
+        final int MAX_VALUE_LENGTH = 10;
+
+        int len = str.length();
+        if (1 <= len && len <= MAX_VALUE_LENGTH) {
+            int c = str.charAt(0);
+            c -= '0';
+            if (c == 0) {
+                // Note that 00,01 etc. are not valid Uint32 presentations
+                return (len == 1) ? 0L : -1L;
+            }
+            if (1 <= c && c <= 9) {
+                long v = c;
+                for (int i = 1; i != len; ++i) {
+                    c = str.charAt(i) - '0';
+                    if (!(0 <= c && c <= 9)) {
+                        return -1;
+                    }
+                    v = 10 * v + c;
+                }
+                // Check for overflow
+                if ((v >>> 32) == 0) {
+                    return v;
+                }
+            }
+        }
+        return -1;
+    }
+
+    /**
+     * If s represents index, then return index value wrapped as Integer
+     * and othewise return s.
+     */
+    static Object getIndexObject(String s)
+    {
+        long indexTest = indexFromString(s);
+        if (indexTest >= 0) {
+            return new Integer((int)indexTest);
+        }
+        return s;
+    }
+
+    /**
+     * If d is exact int value, return its value wrapped as Integer
+     * and othewise return d converted to String.
+     */
+    static Object getIndexObject(double d)
+    {
+        int i = (int)d;
+        if (i == d) {
+            return new Integer(i);
+        }
+        return toString(d);
+    }
+
+    /**
+     * If toString(id) is a decimal presentation of int32 value, then id
+     * is index. In this case return null and make the index available
+     * as ScriptRuntime.lastIndexResult(cx). Otherwise return toString(id).
+     */
+    static String toStringIdOrIndex(Context cx, Object id)
+    {
+        if (id instanceof Number) {
+            double d = ((Number)id).doubleValue();
+            int index = (int)d;
+            if (index == d) {
+                storeIndexResult(cx, index);
+                return null;
+            }
+            return toString(id);
+        } else {
+            String s;
+            if (id instanceof String) {
+                s = (String)id;
+            } else {
+                s = toString(id);
+            }
+            long indexTest = indexFromString(s);
+            if (indexTest >= 0) {
+                storeIndexResult(cx, (int)indexTest);
+                return null;
+            }
+            return s;
+        }
+    }
+
+    /**
+     * Call obj.[[Get]](id)
+     */
+    public static Object getObjectElem(Object obj, Object elem, Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw undefReadError(obj, elem);
+        }
+        return getObjectElem(sobj, elem, cx);
+    }
+
+    public static Object getObjectElem(Scriptable obj, Object elem,
+                                       Context cx)
+    {
+        if (obj instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)obj;
+            return xmlObject.ecmaGet(cx, elem);
+        }
+
+        Object result;
+
+        String s = toStringIdOrIndex(cx, elem);
+        if (s == null) {
+            int index = lastIndexResult(cx);
+            result = ScriptableObject.getProperty(obj, index);
+        } else {
+            result = ScriptableObject.getProperty(obj, s);
+        }
+
+        if (result == Scriptable.NOT_FOUND) {
+            result = Undefined.instance;
+        }
+
+        return result;
+    }
+
+    /**
+     * Version of getObjectElem when elem is a valid JS identifier name.
+     */
+    public static Object getObjectProp(Object obj, String property,
+                                       Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw undefReadError(obj, property);
+        }
+        return getObjectProp(sobj, property, cx);
+    }
+
+    public static Object getObjectProp(Scriptable obj, String property,
+                                       Context cx)
+    {
+        if (obj instanceof XMLObject) {
+            // TODO: Change XMLObject to just use Scriptable interface
+            // to avoid paying cost of instanceof check on *every property
+            // lookup* !
+            XMLObject xmlObject = (XMLObject)obj;
+            return xmlObject.ecmaGet(cx, property);
+        }
+
+        Object result = ScriptableObject.getProperty(obj, property);
+        if (result == Scriptable.NOT_FOUND) {
+            if (cx.hasFeature(Context.FEATURE_STRICT_MODE)) {
+                Context.reportWarning(ScriptRuntime.getMessage1(
+                    "msg.ref.undefined.prop", property));
+            }
+            result = Undefined.instance;
+        }
+
+        return result;
+    }
+    
+    public static Object getObjectPropNoWarn(Object obj, String property,
+                                             Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw undefReadError(obj, property);
+        }
+        if (obj instanceof XMLObject) {
+            // TODO: fix as mentioned in note in method above
+            getObjectProp(sobj, property, cx);
+        }
+        Object result = ScriptableObject.getProperty(sobj, property);
+        if (result == Scriptable.NOT_FOUND) {
+          return Undefined.instance;
+        }
+        return result;
+    }
+    
+    /*
+     * A cheaper and less general version of the above for well-known argument
+     * types.
+     */
+    public static Object getObjectIndex(Object obj, double dblIndex,
+                                        Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw undefReadError(obj, toString(dblIndex));
+        }
+
+        int index = (int)dblIndex;
+        if (index == dblIndex) {
+            return getObjectIndex(sobj, index, cx);
+        } else {
+            String s = toString(dblIndex);
+            return getObjectProp(sobj, s, cx);
+        }
+    }
+
+    public static Object getObjectIndex(Scriptable obj, int index,
+                                        Context cx)
+    {
+        if (obj instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)obj;
+            return xmlObject.ecmaGet(cx, new Integer(index));
+        }
+
+        Object result = ScriptableObject.getProperty(obj, index);
+        if (result == Scriptable.NOT_FOUND) {
+            result = Undefined.instance;
+        }
+
+        return result;
+    }
+
+    /*
+     * Call obj.[[Put]](id, value)
+     */
+    public static Object setObjectElem(Object obj, Object elem, Object value,
+                                       Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw undefWriteError(obj, elem, value);
+        }
+        return setObjectElem(sobj, elem, value, cx);
+    }
+
+    public static Object setObjectElem(Scriptable obj, Object elem,
+                                       Object value, Context cx)
+    {
+        if (obj instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)obj;
+            xmlObject.ecmaPut(cx, elem, value);
+            return value;
+        }
+
+        String s = toStringIdOrIndex(cx, elem);
+        if (s == null) {
+            int index = lastIndexResult(cx);
+            ScriptableObject.putProperty(obj, index, value);
+        } else {
+            ScriptableObject.putProperty(obj, s, value);
+        }
+
+        return value;
+    }
+
+    /**
+     * Version of setObjectElem when elem is a valid JS identifier name.
+     */
+    public static Object setObjectProp(Object obj, String property,
+                                       Object value, Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw undefWriteError(obj, property, value);
+        }
+        return setObjectProp(sobj, property, value, cx);
+    }
+
+    public static Object setObjectProp(Scriptable obj, String property,
+                                       Object value, Context cx)
+    {
+        if (obj instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)obj;
+            xmlObject.ecmaPut(cx, property, value);
+        } else {
+            ScriptableObject.putProperty(obj, property, value);
+        }
+        return value;
+    }
+
+    /*
+     * A cheaper and less general version of the above for well-known argument
+     * types.
+     */
+    public static Object setObjectIndex(Object obj, double dblIndex,
+                                        Object value, Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw undefWriteError(obj, String.valueOf(dblIndex), value);
+        }
+
+        int index = (int)dblIndex;
+        if (index == dblIndex) {
+            return setObjectIndex(sobj, index, value, cx);
+        } else {
+            String s = toString(dblIndex);
+            return setObjectProp(sobj, s, value, cx);
+        }
+    }
+
+    public static Object setObjectIndex(Scriptable obj, int index, Object value,
+                                        Context cx)
+    {
+        if (obj instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)obj;
+            xmlObject.ecmaPut(cx, new Integer(index), value);
+        } else {
+            ScriptableObject.putProperty(obj, index, value);
+        }
+        return value;
+    }
+
+    public static boolean deleteObjectElem(Scriptable target, Object elem,
+                                           Context cx)
+    {
+        boolean result;
+        if (target instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)target;
+            result = xmlObject.ecmaDelete(cx, elem);
+        } else {
+            String s = toStringIdOrIndex(cx, elem);
+            if (s == null) {
+                int index = lastIndexResult(cx);
+                result = ScriptableObject.deleteProperty(target, index);
+            } else {
+                result = ScriptableObject.deleteProperty(target, s);
+            }
+        }
+        return result;
+    }
+
+    public static boolean hasObjectElem(Scriptable target, Object elem,
+                                        Context cx)
+    {
+        boolean result;
+
+        if (target instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)target;
+            result = xmlObject.ecmaHas(cx, elem);
+        } else {
+            String s = toStringIdOrIndex(cx, elem);
+            if (s == null) {
+                int index = lastIndexResult(cx);
+                result = ScriptableObject.hasProperty(target, index);
+            } else {
+                result = ScriptableObject.hasProperty(target, s);
+            }
+        }
+
+        return result;
+    }
+
+    public static Object refGet(Ref ref, Context cx)
+    {
+        return ref.get(cx);
+    }
+
+    public static Object refSet(Ref ref, Object value, Context cx)
+    {
+        return ref.set(cx, value);
+    }
+
+    public static Object refDel(Ref ref, Context cx)
+    {
+        return wrapBoolean(ref.delete(cx));
+    }
+
+    static boolean isSpecialProperty(String s)
+    {
+        return s.equals("__proto__") || s.equals("__parent__");
+    }
+
+    public static Ref specialRef(Object obj, String specialProperty,
+                                 Context cx)
+    {
+        return SpecialRef.createSpecial(cx, obj, specialProperty);
+    }
+
+    /**
+     * The delete operator
+     *
+     * See ECMA 11.4.1
+     *
+     * In ECMA 0.19, the description of the delete operator (11.4.1)
+     * assumes that the [[Delete]] method returns a value. However,
+     * the definition of the [[Delete]] operator (8.6.2.5) does not
+     * define a return value. Here we assume that the [[Delete]]
+     * method doesn't return a value.
+     */
+    public static Object delete(Object obj, Object id, Context cx)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            String idStr = (id == null) ? "null" : id.toString();
+            throw typeError2("msg.undef.prop.delete", toString(obj), idStr);
+        }
+        boolean result = deleteObjectElem(sobj, id, cx);
+        return wrapBoolean(result);
+    }
+
+    /**
+     * Looks up a name in the scope chain and returns its value.
+     */
+    public static Object name(Context cx, Scriptable scope, String name)
+    {
+        Scriptable parent = scope.getParentScope();
+        if (parent == null) {
+            Object result = topScopeName(cx, scope, name);
+            if (result == Scriptable.NOT_FOUND) {
+                throw notFoundError(scope, name);
+            }
+            return result;
+        }
+
+        return nameOrFunction(cx, scope, parent, name, false);
+    }
+
+    private static Object nameOrFunction(Context cx, Scriptable scope,
+                                         Scriptable parentScope, String name,
+                                         boolean asFunctionCall)
+    {
+        Object result;
+        Scriptable thisObj = scope; // It is used only if asFunctionCall==true.
+
+        XMLObject firstXMLObject = null;
+        for (;;) {
+            if (scope instanceof NativeWith) {
+                Scriptable withObj = scope.getPrototype();
+                if (withObj instanceof XMLObject) {
+                    XMLObject xmlObj = (XMLObject)withObj;
+                    if (xmlObj.ecmaHas(cx, name)) {
+                        // function this should be the target object of with
+                        thisObj = xmlObj;
+                        result = xmlObj.ecmaGet(cx, name);
+                        break;
+                    }
+                    if (firstXMLObject == null) {
+                        firstXMLObject = xmlObj;
+                    }
+                } else {
+                    result = ScriptableObject.getProperty(withObj, name);
+                    if (result != Scriptable.NOT_FOUND) {
+                        // function this should be the target object of with
+                        thisObj = withObj;
+                        break;
+                    }
+                }
+            } else if (scope instanceof NativeCall) {
+                // NativeCall does not prototype chain and Scriptable.get
+                // can be called directly.
+                result = scope.get(name, scope);
+                if (result != Scriptable.NOT_FOUND) {
+                    if (asFunctionCall) {
+                        // ECMA 262 requires that this for nested funtions
+                        // should be top scope
+                        thisObj = ScriptableObject.
+                                      getTopLevelScope(parentScope);
+                    }
+                    break;
+                }
+            } else {
+                // Can happen if Rhino embedding decided that nested
+                // scopes are useful for what ever reasons.
+                result = ScriptableObject.getProperty(scope, name);
+                if (result != Scriptable.NOT_FOUND) {
+                    thisObj = scope;
+                    break;
+                }
+            }
+            scope = parentScope;
+            parentScope = parentScope.getParentScope();
+            if (parentScope == null) {
+                result = topScopeName(cx, scope, name);
+                if (result == Scriptable.NOT_FOUND) {
+                    if (firstXMLObject == null || asFunctionCall) {
+                        throw notFoundError(scope, name);
+                    }
+                    // The name was not found, but we did find an XML
+                    // object in the scope chain and we are looking for name,
+                    // not function. The result should be an empty XMLList
+                    // in name context.
+                    result = firstXMLObject.ecmaGet(cx, name);
+                }
+                // For top scope thisObj for functions is always scope itself.
+                thisObj = scope;
+                break;
+            }
+        }
+
+        if (asFunctionCall) {
+            if (!(result instanceof Callable)) {
+                throw notFunctionError(result, name);
+            }
+            storeScriptable(cx, thisObj);
+        }
+
+        return result;
+    }
+
+    private static Object topScopeName(Context cx, Scriptable scope,
+                                       String name)
+    {
+        if (cx.useDynamicScope) {
+            scope = checkDynamicScope(cx.topCallScope, scope);
+        }
+        return ScriptableObject.getProperty(scope, name);
+    }
+
+
+    /**
+     * Returns the object in the scope chain that has a given property.
+     *
+     * The order of evaluation of an assignment expression involves
+     * evaluating the lhs to a reference, evaluating the rhs, and then
+     * modifying the reference with the rhs value. This method is used
+     * to 'bind' the given name to an object containing that property
+     * so that the side effects of evaluating the rhs do not affect
+     * which property is modified.
+     * Typically used in conjunction with setName.
+     *
+     * See ECMA 10.1.4
+     */
+    public static Scriptable bind(Context cx, Scriptable scope, String id)
+    {
+        Scriptable firstXMLObject = null;
+        Scriptable parent = scope.getParentScope();
+        childScopesChecks: if (parent != null) {
+            // Check for possibly nested "with" scopes first
+            while (scope instanceof NativeWith) {
+                Scriptable withObj = scope.getPrototype();
+                if (withObj instanceof XMLObject) {
+                    XMLObject xmlObject = (XMLObject)withObj;
+                    if (xmlObject.ecmaHas(cx, id)) {
+                        return xmlObject;
+                    }
+                    if (firstXMLObject == null) {
+                        firstXMLObject = xmlObject;
+                    }
+                } else {
+                    if (ScriptableObject.hasProperty(withObj, id)) {
+                        return withObj;
+                    }
+                }
+                scope = parent;
+                parent = parent.getParentScope();
+                if (parent == null) {
+                    break childScopesChecks;
+                }
+            }
+            for (;;) {
+                if (ScriptableObject.hasProperty(scope, id)) {
+                    return scope;
+                }
+                scope = parent;
+                parent = parent.getParentScope();
+                if (parent == null) {
+                    break childScopesChecks;
+                }
+            }
+        }
+        // scope here is top scope
+        if (cx.useDynamicScope) {
+            scope = checkDynamicScope(cx.topCallScope, scope);
+        }
+        if (ScriptableObject.hasProperty(scope, id)) {
+            return scope;
+        }
+        // Nothing was found, but since XML objects always bind
+        // return one if found
+        return firstXMLObject;
+    }
+
+    public static Object setName(Scriptable bound, Object value,
+                                 Context cx, Scriptable scope, String id)
+    {
+        if (bound != null) {
+            if (bound instanceof XMLObject) {
+                XMLObject xmlObject = (XMLObject)bound;
+                xmlObject.ecmaPut(cx, id, value);
+            } else {
+                ScriptableObject.putProperty(bound, id, value);
+            }
+        } else {
+            // "newname = 7;", where 'newname' has not yet
+            // been defined, creates a new property in the
+            // top scope unless strict mode is specified.
+            if (cx.hasFeature(Context.FEATURE_STRICT_MODE) ||
+                cx.hasFeature(Context.FEATURE_STRICT_VARS))
+            {
+                Context.reportWarning(
+                    ScriptRuntime.getMessage1("msg.assn.create.strict", id));
+            }
+            // Find the top scope by walking up the scope chain.
+            bound = ScriptableObject.getTopLevelScope(scope);
+            if (cx.useDynamicScope) {
+                bound = checkDynamicScope(cx.topCallScope, bound);
+            }
+            bound.put(id, bound, value);
+        }
+        return value;
+    }
+
+    public static Object setConst(Scriptable bound, Object value,
+                                 Context cx, String id)
+    {
+        if (bound instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)bound;
+            xmlObject.ecmaPut(cx, id, value);
+        } else {
+            ScriptableObject.putConstProperty(bound, id, value);
+        }
+        return value;
+    }
+
+    /**
+     * This is the enumeration needed by the for..in statement.
+     *
+     * See ECMA 12.6.3.
+     *
+     * IdEnumeration maintains a ObjToIntMap to make sure a given
+     * id is enumerated only once across multiple objects in a
+     * prototype chain.
+     *
+     * XXX - ECMA delete doesn't hide properties in the prototype,
+     * but js/ref does. This means that the js/ref for..in can
+     * avoid maintaining a hash table and instead perform lookups
+     * to see if a given property has already been enumerated.
+     *
+     */
+    private static class IdEnumeration implements Serializable
+    {
+        private static final long serialVersionUID = 1L;
+        Scriptable obj;
+        Object[] ids;
+        int index;
+        ObjToIntMap used;
+        Object currentId;
+        int enumType; /* one of ENUM_INIT_KEYS, ENUM_INIT_VALUES, 
+                         ENUM_INIT_ARRAY */
+        
+        // if true, integer ids will be returned as numbers rather than strings
+        boolean enumNumbers; 
+        
+        Scriptable iterator;
+    }
+    
+    public static Scriptable toIterator(Context cx, Scriptable scope, 
+                                        Scriptable obj, boolean keyOnly)
+    {
+        /*APPJET 1.6*//*
+        if (ScriptableObject.hasProperty(obj, 
+            NativeIterator.ITERATOR_PROPERTY_NAME))
+        {
+            Object v = ScriptableObject.getProperty(obj, 
+                NativeIterator.ITERATOR_PROPERTY_NAME);
+            if (!(v instanceof Callable)) {
+               throw typeError0("msg.invalid.iterator");
+            }
+            Callable f = (Callable) v;
+            Object[] args = new Object[] { keyOnly ? Boolean.TRUE
+                                                   : Boolean.FALSE };
+            v = f.call(cx, scope, obj, args);
+            if (!(v instanceof Scriptable)) {
+                throw typeError0("msg.iterator.primitive");
+            }
+            return (Scriptable) v;
+            }*/
+        return null;
+    }
+
+    // for backwards compatibility with generated class files
+    public static Object enumInit(Object value, Context cx, boolean enumValues)
+    {
+        return enumInit(value, cx, enumValues ? ENUMERATE_VALUES
+                                              : ENUMERATE_KEYS);
+    }
+
+    public static final int ENUMERATE_KEYS = 0;
+    public static final int ENUMERATE_VALUES = 1;
+    public static final int ENUMERATE_ARRAY = 2;
+    public static final int ENUMERATE_KEYS_NO_ITERATOR = 3;
+    public static final int ENUMERATE_VALUES_NO_ITERATOR = 4;
+    public static final int ENUMERATE_ARRAY_NO_ITERATOR = 5;
+
+    public static Object enumInit(Object value, Context cx, int enumType)
+    {
+        IdEnumeration x = new IdEnumeration();
+        x.obj = toObjectOrNull(cx, value);
+        if (x.obj == null) {
+            // null or undefined do not cause errors but rather lead to empty
+            // "for in" loop
+            return x;
+        }
+        x.enumType = enumType;
+        x.iterator = null;
+        if (enumType != ENUMERATE_KEYS_NO_ITERATOR &&
+            enumType != ENUMERATE_VALUES_NO_ITERATOR &&
+            enumType != ENUMERATE_ARRAY_NO_ITERATOR)
+        {
+            x.iterator = toIterator(cx, x.obj.getParentScope(), x.obj, true);
+        }
+        if (x.iterator == null) {
+            // enumInit should read all initial ids before returning
+            // or "for (a.i in a)" would wrongly enumerate i in a as well
+            enumChangeObject(x);
+        }
+        
+        return x;
+    }
+    
+    public static void setEnumNumbers(Object enumObj, boolean enumNumbers) {
+        ((IdEnumeration)enumObj).enumNumbers = enumNumbers;
+    }
+
+    public static Boolean enumNext(Object enumObj)
+    {
+        IdEnumeration x = (IdEnumeration)enumObj;
+        if (x.iterator != null) {
+            Object v = ScriptableObject.getProperty(x.iterator, "next");
+            if (!(v instanceof Callable))
+                return Boolean.FALSE;
+            Callable f = (Callable) v;
+            Context cx = Context.enter();
+            try {
+                x.currentId = f.call(cx, x.iterator.getParentScope(), 
+                                     x.iterator, emptyArgs);
+                return Boolean.TRUE;
+            } catch (JavaScriptException e) {
+                if (e.getValue() instanceof NativeIterator.StopIteration) {
+                  return Boolean.FALSE;
+                }
+                throw e;
+            } finally {
+                Context.exit();
+            }
+        }
+        for (;;) {
+            if (x.obj == null) {
+                return Boolean.FALSE;
+            }
+            if (x.index == x.ids.length) {
+                x.obj = x.obj.getPrototype();
+                enumChangeObject(x);
+                continue;
+            }
+            Object id = x.ids[x.index++];
+            if (x.used != null && x.used.has(id)) {
+                continue;
+            }
+            if (id instanceof String) {
+                String strId = (String)id;
+                if (!x.obj.has(strId, x.obj))
+                    continue;   // must have been deleted
+                x.currentId = strId;
+            } else {
+                int intId = ((Number)id).intValue();
+                if (!x.obj.has(intId, x.obj))
+                    continue;   // must have been deleted
+                x.currentId = x.enumNumbers ? (Object) (new Integer(intId))
+                                            : String.valueOf(intId);
+            }
+            return Boolean.TRUE;
+        }
+    }
+
+    public static Object enumId(Object enumObj, Context cx)
+    {
+        IdEnumeration x = (IdEnumeration)enumObj;
+        if (x.iterator != null) {
+            return x.currentId;
+        }
+        switch (x.enumType) {
+          case ENUMERATE_KEYS:
+          case ENUMERATE_KEYS_NO_ITERATOR:
+            return x.currentId;
+          case ENUMERATE_VALUES:
+          case ENUMERATE_VALUES_NO_ITERATOR:
+            return enumValue(enumObj, cx);
+          case ENUMERATE_ARRAY:
+          case ENUMERATE_ARRAY_NO_ITERATOR:
+            Object[] elements = { x.currentId, enumValue(enumObj, cx) };
+            return cx.newArray(x.obj.getParentScope(), elements);
+          default:
+            throw Kit.codeBug();
+        }
+    }
+
+    public static Object enumValue(Object enumObj, Context cx) {
+        IdEnumeration x = (IdEnumeration)enumObj;
+
+        Object result;
+
+        String s = toStringIdOrIndex(cx, x.currentId);
+        if (s == null) {
+            int index = lastIndexResult(cx);
+            result = x.obj.get(index, x.obj);
+        } else {
+            result = x.obj.get(s, x.obj);
+        }
+
+        return result;
+    }
+
+    private static void enumChangeObject(IdEnumeration x)
+    {
+        Object[] ids = null;
+        while (x.obj != null) {
+            ids = x.obj.getIds();
+            if (ids.length != 0) {
+                break;
+            }
+            x.obj = x.obj.getPrototype();
+        }
+        if (x.obj != null && x.ids != null) {
+            Object[] previous = x.ids;
+            int L = previous.length;
+            if (x.used == null) {
+                x.used = new ObjToIntMap(L);
+            }
+            for (int i = 0; i != L; ++i) {
+                x.used.intern(previous[i]);
+            }
+        }
+        x.ids = ids;
+        x.index = 0;
+    }
+
+    /**
+     * Prepare for calling name(...): return function corresponding to
+     * name and make current top scope available
+     * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj.
+     * The caller must call ScriptRuntime.lastStoredScriptable() immediately
+     * after calling this method.
+     */
+    public static Callable getNameFunctionAndThis(String name,
+                                                  Context cx,
+                                                  Scriptable scope)
+    {
+        Scriptable parent = scope.getParentScope();
+        if (parent == null) {
+            Object result = topScopeName(cx, scope, name);
+            if (!(result instanceof Callable)) {
+                if (result == Scriptable.NOT_FOUND) {
+                    throw notFoundError(scope, name);
+                } else {
+                    throw notFunctionError(result, name);
+                }
+            }
+            // Top scope is not NativeWith or NativeCall => thisObj == scope
+            Scriptable thisObj = scope;
+            storeScriptable(cx, thisObj);
+            return (Callable)result;
+        }
+
+        // name will call storeScriptable(cx, thisObj);
+        return (Callable)nameOrFunction(cx, scope, parent, name, true);
+    }
+
+    /**
+     * Prepare for calling obj[id](...): return function corresponding to
+     * obj[id] and make obj properly converted to Scriptable available
+     * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj.
+     * The caller must call ScriptRuntime.lastStoredScriptable() immediately
+     * after calling this method.
+     */
+    public static Callable getElemFunctionAndThis(Object obj,
+                                                  Object elem,
+                                                  Context cx)
+    {
+        String s = toStringIdOrIndex(cx, elem);
+        if (s != null) {
+            return getPropFunctionAndThis(obj, s, cx);
+        }
+        int index = lastIndexResult(cx);
+
+        Scriptable thisObj = toObjectOrNull(cx, obj);
+        if (thisObj == null) {
+            throw undefCallError(obj, String.valueOf(index));
+        }
+
+        Object value;
+        for (;;) {
+            // Ignore XML lookup as requred by ECMA 357, 11.2.2.1
+            value = ScriptableObject.getProperty(thisObj, index);
+            if (value != Scriptable.NOT_FOUND) {
+                break;
+            }
+            if (!(thisObj instanceof XMLObject)) {
+                break;
+            }
+            XMLObject xmlObject = (XMLObject)thisObj;
+            Scriptable extra = xmlObject.getExtraMethodSource(cx);
+            if (extra == null) {
+                break;
+            }
+            thisObj = extra;
+        }
+        if (!(value instanceof Callable)) {
+            throw notFunctionError(value, elem);
+        }
+
+        storeScriptable(cx, thisObj);
+        return (Callable)value;
+    }
+
+    /**
+     * Prepare for calling obj.property(...): return function corresponding to
+     * obj.property and make obj properly converted to Scriptable available
+     * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj.
+     * The caller must call ScriptRuntime.lastStoredScriptable() immediately
+     * after calling this method.
+     */
+    public static Callable getPropFunctionAndThis(Object obj,
+                                                  String property,
+                                                  Context cx)
+    {
+        Scriptable thisObj = toObjectOrNull(cx, obj);
+        if (thisObj == null) {
+            throw undefCallError(obj, property);
+        }
+
+        Object value;
+        for (;;) {
+            // Ignore XML lookup as required by ECMA 357, 11.2.2.1
+            value = ScriptableObject.getProperty(thisObj, property);
+            if (value != Scriptable.NOT_FOUND) {
+                break;
+            }
+            if (!(thisObj instanceof XMLObject)) {
+                break;
+            }
+            XMLObject xmlObject = (XMLObject)thisObj;
+            Scriptable extra = xmlObject.getExtraMethodSource(cx);
+            if (extra == null) {
+                break;
+            }
+            thisObj = extra;
+        }
+
+        if (!(value instanceof Callable)) {
+            Object noSuchMethod = ScriptableObject.getProperty(thisObj, "__noSuchMethod__");
+            if (noSuchMethod instanceof Callable)
+                value = new NoSuchMethodShim((Callable)noSuchMethod, property);
+            else
+                throw notFunctionError(thisObj, value, property);
+        }
+
+        storeScriptable(cx, thisObj);
+        return (Callable)value;
+    }
+
+    /**
+     * Prepare for calling <expression>(...): return function corresponding to
+     * <expression> and make parent scope of the function available
+     * as ScriptRuntime.lastStoredScriptable() for consumption as thisObj.
+     * The caller must call ScriptRuntime.lastStoredScriptable() immediately
+     * after calling this method.
+     */
+    public static Callable getValueFunctionAndThis(Object value, Context cx)
+    {
+        if (!(value instanceof Callable)) {
+            throw notFunctionError(value);
+        }
+
+        Callable f = (Callable)value;
+        Scriptable thisObj = null;
+        if (f instanceof Scriptable) {
+            thisObj = ((Scriptable)f).getParentScope();
+        }
+        if (thisObj == null) {
+            if (cx.topCallScope == null) throw new IllegalStateException();
+            thisObj = cx.topCallScope;
+        }
+        if (thisObj.getParentScope() != null) {
+            if (thisObj instanceof NativeWith) {
+                // functions defined inside with should have with target
+                // as their thisObj
+            } else if (thisObj instanceof NativeCall) {
+                // nested functions should have top scope as their thisObj
+                thisObj = ScriptableObject.getTopLevelScope(thisObj);
+            }
+        }
+        storeScriptable(cx, thisObj);
+        return f;
+    }
+
+    /**
+     * Perform function call in reference context. Should always
+     * return value that can be passed to
+     * {@link #refGet(Ref, Context)} or {@link #refSet(Ref, Object, Context)}
+     * arbitrary number of times.
+     * The args array reference should not be stored in any object that is
+     * can be GC-reachable after this method returns. If this is necessary,
+     * store args.clone(), not args array itself.
+     */
+    public static Ref callRef(Callable function, Scriptable thisObj,
+                              Object[] args, Context cx)
+    {
+        if (function instanceof RefCallable) {
+            RefCallable rfunction = (RefCallable)function;
+            Ref ref = rfunction.refCall(cx, thisObj, args);
+            if (ref == null) {
+                throw new IllegalStateException(rfunction.getClass().getName()+".refCall() returned null");
+            }
+            return ref;
+        }
+        // No runtime support for now
+        String msg = getMessage1("msg.no.ref.from.function",
+                                 toString(function));
+        throw constructError("ReferenceError", msg);
+    }
+
+    /**
+     * Operator new.
+     *
+     * See ECMA 11.2.2
+     */
+    public static Scriptable newObject(Object fun, Context cx,
+                                       Scriptable scope, Object[] args)
+    {
+        if (!(fun instanceof Function)) {
+            throw notFunctionError(fun);
+        }
+        Function function = (Function)fun;
+        return function.construct(cx, scope, args);
+    }
+
+    public static Object callSpecial(Context cx, Callable fun,
+                                     Scriptable thisObj,
+                                     Object[] args, Scriptable scope,
+                                     Scriptable callerThis, int callType,
+                                     String filename, int lineNumber)
+    {
+        if (callType == Node.SPECIALCALL_EVAL) {
+            if (NativeGlobal.isEvalFunction(fun)) {
+                return evalSpecial(cx, scope, callerThis, args,
+                                   filename, lineNumber);
+            }
+        } else if (callType == Node.SPECIALCALL_WITH) {
+            if (NativeWith.isWithFunction(fun)) {
+                throw Context.reportRuntimeError1("msg.only.from.new",
+                                                  "With");
+            }
+        } else {
+            throw Kit.codeBug();
+        }
+
+        return fun.call(cx, scope, thisObj, args);
+    }
+
+    public static Object newSpecial(Context cx, Object fun,
+                                    Object[] args, Scriptable scope,
+                                    int callType)
+    {
+        if (callType == Node.SPECIALCALL_EVAL) {
+            if (NativeGlobal.isEvalFunction(fun)) {
+                throw typeError1("msg.not.ctor", "eval");
+            }
+        } else if (callType == Node.SPECIALCALL_WITH) {
+            if (NativeWith.isWithFunction(fun)) {
+                return NativeWith.newWithSpecial(cx, scope, args);
+            }
+        } else {
+            throw Kit.codeBug();
+        }
+
+        return newObject(fun, cx, scope, args);
+    }
+
+    /**
+     * Function.prototype.apply and Function.prototype.call
+     *
+     * See Ecma 15.3.4.[34]
+     */
+    public static Object applyOrCall(boolean isApply,
+                                     Context cx, Scriptable scope,
+                                     Scriptable thisObj, Object[] args)
+    {
+        int L = args.length;
+        Callable function = getCallable(thisObj);
+
+        Scriptable callThis = null;
+        if (L != 0) {
+            callThis = toObjectOrNull(cx, args[0]);
+        }
+        if (callThis == null) {
+            // This covers the case of args[0] == (null|undefined) as well.
+            callThis = getTopCallScope(cx);
+        }
+
+        Object[] callArgs;
+        if (isApply) {
+            // Follow Ecma 15.3.4.3
+            callArgs = L <= 1 ? ScriptRuntime.emptyArgs : 
+                getApplyArguments(cx, args[1]);
+        } else {
+            // Follow Ecma 15.3.4.4
+            if (L <= 1) {
+                callArgs = ScriptRuntime.emptyArgs;
+            } else {
+                callArgs = new Object[L - 1];
+                System.arraycopy(args, 1, callArgs, 0, L - 1);
+            }
+        }
+
+        return function.call(cx, scope, callThis, callArgs);
+    }
+
+    static Object[] getApplyArguments(Context cx, Object arg1)
+    {
+        if (arg1 == null || arg1 == Undefined.instance) {
+            return ScriptRuntime.emptyArgs;
+        } else if (arg1 instanceof NativeArray || arg1 instanceof Arguments) {
+            return cx.getElements((Scriptable) arg1);
+        } else {
+            throw ScriptRuntime.typeError0("msg.arg.isnt.array");
+        }
+    }
+
+    static Callable getCallable(Scriptable thisObj)
+    {
+        Callable function;
+        if (thisObj instanceof Callable) {
+            function = (Callable)thisObj;
+        } else {
+            Object value = thisObj.getDefaultValue(ScriptRuntime.FunctionClass);
+            if (!(value instanceof Callable)) {
+                throw ScriptRuntime.notFunctionError(value, thisObj);
+            }
+            function = (Callable)value;
+        }
+        return function;
+    }
+
+    /**
+     * The eval function property of the global object.
+     *
+     * See ECMA 15.1.2.1
+     */
+    public static Object evalSpecial(Context cx, Scriptable scope,
+                                     Object thisArg, Object[] args,
+                                     String filename, int lineNumber)
+    {
+        if (args.length < 1)
+            return Undefined.instance;
+        Object x = args[0];
+        if (!(x instanceof String)) {
+            if (cx.hasFeature(Context.FEATURE_STRICT_MODE) ||
+                cx.hasFeature(Context.FEATURE_STRICT_EVAL))
+            {
+                throw Context.reportRuntimeError0("msg.eval.nonstring.strict");
+            }
+            String message = ScriptRuntime.getMessage0("msg.eval.nonstring");
+            Context.reportWarning(message);
+            return x;
+        }
+        if (filename == null) {
+            int[] linep = new int[1];
+            filename = Context.getSourcePositionFromStack(linep);
+            if (filename != null) {
+                lineNumber = linep[0];
+            } else {
+                filename = "";
+            }
+        }
+        String sourceName = ScriptRuntime.
+            makeUrlForGeneratedScript(true, filename, lineNumber);
+
+        ErrorReporter reporter;
+        reporter = DefaultErrorReporter.forEval(cx.getErrorReporter());
+
+        Evaluator evaluator = Context.createInterpreter();
+        if (evaluator == null) {
+            throw new JavaScriptException("Interpreter not present",
+                    filename, lineNumber);            
+        }
+
+        // Compile with explicit interpreter instance to force interpreter
+        // mode.
+        Script script = cx.compileString((String)x, evaluator,
+                                         reporter, sourceName, 1, null);
+        evaluator.setEvalScriptFlag(script);
+        Callable c = (Callable)script;
+        return c.call(cx, scope, (Scriptable)thisArg, ScriptRuntime.emptyArgs);
+    }
+
+    /**
+     * The typeof operator
+     */
+    public static String typeof(Object value)
+    {
+        if (value == null)
+            return "object";
+        if (value == Undefined.instance)
+            return "undefined";
+        if (value instanceof Scriptable)
+        {
+            if (value instanceof ScriptableObject &&
+                ((ScriptableObject)value).avoidObjectDetection())
+            {
+                return "undefined";
+            }
+            if (value instanceof XMLObject)
+                return "xml";
+            return (value instanceof Callable) ? "function" : "object";
+        }
+        if (value instanceof String)
+            return "string";
+        if (value instanceof Number)
+            return "number";
+        if (value instanceof Boolean)
+            return "boolean";
+        throw errorWithClassName("msg.invalid.type", value);
+    }
+
+    /**
+     * The typeof operator that correctly handles the undefined case
+     */
+    public static String typeofName(Scriptable scope, String id)
+    {
+        Context cx = Context.getContext();
+        Scriptable val = bind(cx, scope, id);
+        if (val == null)
+            return "undefined";
+        return typeof(getObjectProp(val, id, cx));
+    }
+
+    // neg:
+    // implement the '-' operator inline in the caller
+    // as "-toNumber(val)"
+
+    // not:
+    // implement the '!' operator inline in the caller
+    // as "!toBoolean(val)"
+
+    // bitnot:
+    // implement the '~' operator inline in the caller
+    // as "~toInt32(val)"
+
+    public static Object add(Object val1, Object val2, Context cx)
+    {
+        if(val1 instanceof Number && val2 instanceof Number) {
+            return wrapNumber(((Number)val1).doubleValue() +
+                              ((Number)val2).doubleValue());
+        }
+        if (val1 instanceof XMLObject) {
+            Object test = ((XMLObject)val1).addValues(cx, true, val2);
+            if (test != Scriptable.NOT_FOUND) {
+                return test;
+            }
+        }
+        if (val2 instanceof XMLObject) {
+            Object test = ((XMLObject)val2).addValues(cx, false, val1);
+            if (test != Scriptable.NOT_FOUND) {
+                return test;
+            }
+        }
+        if (val1 instanceof Scriptable)
+            val1 = ((Scriptable) val1).getDefaultValue(null);
+        if (val2 instanceof Scriptable)
+            val2 = ((Scriptable) val2).getDefaultValue(null);
+        if (!(val1 instanceof String) && !(val2 instanceof String))
+            if ((val1 instanceof Number) && (val2 instanceof Number))
+                return wrapNumber(((Number)val1).doubleValue() +
+                                  ((Number)val2).doubleValue());
+            else
+                return wrapNumber(toNumber(val1) + toNumber(val2));
+        return toString(val1).concat(toString(val2));
+    }
+
+    public static String add(String val1, Object val2) {
+        return val1.concat(toString(val2));
+    }
+
+    public static String add(Object val1, String val2) {
+        return toString(val1).concat(val2);
+    }
+
+    /**
+     * @deprecated The method is only present for compatibility.
+     */
+    public static Object nameIncrDecr(Scriptable scopeChain, String id,
+                                      int incrDecrMask)
+    {
+        return nameIncrDecr(scopeChain, id, Context.getContext(), incrDecrMask);
+    }
+
+    public static Object nameIncrDecr(Scriptable scopeChain, String id,
+                                      Context cx, int incrDecrMask)
+    {
+        Scriptable target;
+        Object value;
+      search: {
+            do {
+                if (cx.useDynamicScope && scopeChain.getParentScope() == null) {
+                    scopeChain = checkDynamicScope(cx.topCallScope, scopeChain);
+                }
+                target = scopeChain;
+                do {
+                    value = target.get(id, scopeChain);
+                    if (value != Scriptable.NOT_FOUND) {
+                        break search;
+                    }
+                    target = target.getPrototype();
+                } while (target != null);
+                scopeChain = scopeChain.getParentScope();
+            } while (scopeChain != null);
+            throw notFoundError(scopeChain, id);
+        }
+        return doScriptableIncrDecr(target, id, scopeChain, value,
+                                    incrDecrMask);
+    }
+
+    public static Object propIncrDecr(Object obj, String id,
+                                      Context cx, int incrDecrMask)
+    {
+        Scriptable start = toObjectOrNull(cx, obj);
+        if (start == null) {
+            throw undefReadError(obj, id);
+        }
+
+        Scriptable target = start;
+        Object value;
+      search: {
+            do {
+                value = target.get(id, start);
+                if (value != Scriptable.NOT_FOUND) {
+                    break search;
+                }
+                target = target.getPrototype();
+            } while (target != null);
+            start.put(id, start, NaNobj);
+            return NaNobj;
+        }
+        return doScriptableIncrDecr(target, id, start, value,
+                                    incrDecrMask);
+    }
+
+    private static Object doScriptableIncrDecr(Scriptable target,
+                                               String id,
+                                               Scriptable protoChainStart,
+                                               Object value,
+                                               int incrDecrMask)
+    {
+        boolean post = ((incrDecrMask & Node.POST_FLAG) != 0);
+        double number;
+        if (value instanceof Number) {
+            number = ((Number)value).doubleValue();
+        } else {
+            number = toNumber(value);
+            if (post) {
+                // convert result to number
+                value = wrapNumber(number);
+            }
+        }
+        if ((incrDecrMask & Node.DECR_FLAG) == 0) {
+            ++number;
+        } else {
+            --number;
+        }
+        Number result = wrapNumber(number);
+        target.put(id, protoChainStart, result);
+        if (post) {
+            return value;
+        } else {
+            return result;
+        }
+    }
+
+    public static Object elemIncrDecr(Object obj, Object index,
+                                      Context cx, int incrDecrMask)
+    {
+        Object value = getObjectElem(obj, index, cx);
+        boolean post = ((incrDecrMask & Node.POST_FLAG) != 0);
+        double number;
+        if (value instanceof Number) {
+            number = ((Number)value).doubleValue();
+        } else {
+            number = toNumber(value);
+            if (post) {
+                // convert result to number
+                value = wrapNumber(number);
+            }
+        }
+        if ((incrDecrMask & Node.DECR_FLAG) == 0) {
+            ++number;
+        } else {
+            --number;
+        }
+        Number result = wrapNumber(number);
+        setObjectElem(obj, index, result, cx);
+        if (post) {
+            return value;
+        } else {
+            return result;
+        }
+    }
+
+    public static Object refIncrDecr(Ref ref, Context cx, int incrDecrMask)
+    {
+        Object value = ref.get(cx);
+        boolean post = ((incrDecrMask & Node.POST_FLAG) != 0);
+        double number;
+        if (value instanceof Number) {
+            number = ((Number)value).doubleValue();
+        } else {
+            number = toNumber(value);
+            if (post) {
+                // convert result to number
+                value = wrapNumber(number);
+            }
+        }
+        if ((incrDecrMask & Node.DECR_FLAG) == 0) {
+            ++number;
+        } else {
+            --number;
+        }
+        Number result = wrapNumber(number);
+        ref.set(cx, result);
+        if (post) {
+            return value;
+        } else {
+            return result;
+        }
+    }
+
+    private static Object toPrimitive(Object val)
+    {
+        if (!(val instanceof Scriptable)) {
+            return val;
+        }
+        Scriptable s = (Scriptable)val;
+        Object result = s.getDefaultValue(null);
+        if (result instanceof Scriptable)
+            throw typeError0("msg.bad.default.value");
+        return result;
+    }
+
+    /**
+     * Equality
+     *
+     * See ECMA 11.9
+     */
+    public static boolean eq(Object x, Object y)
+    {
+        if (x == null || x == Undefined.instance) {
+            if (y == null || y == Undefined.instance) {
+                return true;
+            }
+            if (y instanceof ScriptableObject) {
+                Object test = ((ScriptableObject)y).equivalentValues(x);
+                if (test != Scriptable.NOT_FOUND) {
+                    return ((Boolean)test).booleanValue();
+                }
+            }
+            return false;
+        } else if (x instanceof Number) {
+            return eqNumber(((Number)x).doubleValue(), y);
+        } else if (x instanceof String) {
+            return eqString((String)x, y);
+        } else if (x instanceof Boolean) {
+            boolean b = ((Boolean)x).booleanValue();
+            if (y instanceof Boolean) {
+                return b == ((Boolean)y).booleanValue();
+            }
+            if (y instanceof ScriptableObject) {
+                Object test = ((ScriptableObject)y).equivalentValues(x);
+                if (test != Scriptable.NOT_FOUND) {
+                    return ((Boolean)test).booleanValue();
+                }
+            }
+            return eqNumber(b ? 1.0 : 0.0, y);
+        } else if (x instanceof Scriptable) {
+            if (y instanceof Scriptable) {
+                if (x == y) {
+                    return true;
+                }
+                if (x instanceof ScriptableObject) {
+                    Object test = ((ScriptableObject)x).equivalentValues(y);
+                    if (test != Scriptable.NOT_FOUND) {
+                        return ((Boolean)test).booleanValue();
+                    }
+                }
+                if (y instanceof ScriptableObject) {
+                    Object test = ((ScriptableObject)y).equivalentValues(x);
+                    if (test != Scriptable.NOT_FOUND) {
+                        return ((Boolean)test).booleanValue();
+                    }
+                }
+                if (x instanceof Wrapper && y instanceof Wrapper) {
+                    // See bug 413838. Effectively an extension to ECMA for
+                    // the LiveConnect case.
+                    Object unwrappedX = ((Wrapper)x).unwrap();
+                    Object unwrappedY = ((Wrapper)y).unwrap();
+                    return unwrappedX == unwrappedY ||
+                           (isPrimitive(unwrappedX) &&
+                            isPrimitive(unwrappedY) &&
+                            eq(unwrappedX, unwrappedY));
+                }
+                return false;
+            } else if (y instanceof Boolean) {
+                if (x instanceof ScriptableObject) {
+                    Object test = ((ScriptableObject)x).equivalentValues(y);
+                    if (test != Scriptable.NOT_FOUND) {
+                        return ((Boolean)test).booleanValue();
+                    }
+                }
+                double d = ((Boolean)y).booleanValue() ? 1.0 : 0.0;
+                return eqNumber(d, x);
+            } else if (y instanceof Number) {
+                return eqNumber(((Number)y).doubleValue(), x);
+            } else if (y instanceof String) {
+                return eqString((String)y, x);
+            }
+            // covers the case when y == Undefined.instance as well
+            return false;
+        } else {
+            warnAboutNonJSObject(x);
+            return x == y;
+        }
+    }
+    
+    private static boolean isPrimitive(Object obj) {
+        return (obj instanceof Number) || (obj instanceof String) ||
+               (obj instanceof Boolean);
+    }
+
+    static boolean eqNumber(double x, Object y)
+    {
+        for (;;) {
+            if (y == null || y == Undefined.instance) {
+                return false;
+            } else if (y instanceof Number) {
+                return x == ((Number)y).doubleValue();
+            } else if (y instanceof String) {
+                return x == toNumber(y);
+            } else if (y instanceof Boolean) {
+                return x == (((Boolean)y).booleanValue() ? 1.0 : +0.0);
+            } else if (y instanceof Scriptable) {
+                if (y instanceof ScriptableObject) {
+                    Object xval = wrapNumber(x);
+                    Object test = ((ScriptableObject)y).equivalentValues(xval);
+                    if (test != Scriptable.NOT_FOUND) {
+                        return ((Boolean)test).booleanValue();
+                    }
+                }
+                y = toPrimitive(y);
+            } else {
+                warnAboutNonJSObject(y);
+                return false;
+            }
+        }
+    }
+
+    private static boolean eqString(String x, Object y)
+    {
+        for (;;) {
+            if (y == null || y == Undefined.instance) {
+                return false;
+            } else if (y instanceof String) {
+                return x.equals(y);
+            } else if (y instanceof Number) {
+                return toNumber(x) == ((Number)y).doubleValue();
+            } else if (y instanceof Boolean) {
+                return toNumber(x) == (((Boolean)y).booleanValue() ? 1.0 : 0.0);
+            } else if (y instanceof Scriptable) {
+                if (y instanceof ScriptableObject) {
+                    Object test = ((ScriptableObject)y).equivalentValues(x);
+                    if (test != Scriptable.NOT_FOUND) {
+                        return ((Boolean)test).booleanValue();
+                    }
+                }
+                y = toPrimitive(y);
+                continue;
+            } else {
+                warnAboutNonJSObject(y);
+                return false;
+            }
+        }
+    }
+    public static boolean shallowEq(Object x, Object y)
+    {
+        if (x == y) {
+            if (!(x instanceof Number)) {
+                return true;
+            }
+            // NaN check
+            double d = ((Number)x).doubleValue();
+            return d == d;
+        }
+        if (x == null || x == Undefined.instance) {
+            return false;
+        } else if (x instanceof Number) {
+            if (y instanceof Number) {
+                return ((Number)x).doubleValue() == ((Number)y).doubleValue();
+            }
+        } else if (x instanceof String) {
+            if (y instanceof String) {
+                return x.equals(y);
+            }
+        } else if (x instanceof Boolean) {
+            if (y instanceof Boolean) {
+                return x.equals(y);
+            }
+        } else if (x instanceof Scriptable) {
+            if (x instanceof Wrapper && y instanceof Wrapper) {
+                return ((Wrapper)x).unwrap() == ((Wrapper)y).unwrap();
+            }
+        } else {
+            warnAboutNonJSObject(x);
+            return x == y;
+        }
+        return false;
+    }
+
+    /**
+     * The instanceof operator.
+     *
+     * @return a instanceof b
+     */
+    public static boolean instanceOf(Object a, Object b, Context cx)
+    {
+        // Check RHS is an object
+        if (! (b instanceof Scriptable)) {
+            throw typeError0("msg.instanceof.not.object");
+        }
+
+        // for primitive values on LHS, return false
+        // XXX we may want to change this so that
+        // 5 instanceof Number == true
+        if (! (a instanceof Scriptable))
+            return false;
+
+        return ((Scriptable)b).hasInstance((Scriptable)a);
+    }
+
+    /**
+     * Delegates to
+     *
+     * @return true iff rhs appears in lhs' proto chain
+     */
+    public static boolean jsDelegatesTo(Scriptable lhs, Scriptable rhs) {
+        Scriptable proto = lhs.getPrototype();
+
+        while (proto != null) {
+            if (proto.equals(rhs)) return true;
+            proto = proto.getPrototype();
+        }
+
+        return false;
+    }
+
+    /**
+     * The in operator.
+     *
+     * This is a new JS 1.3 language feature.  The in operator mirrors
+     * the operation of the for .. in construct, and tests whether the
+     * rhs has the property given by the lhs.  It is different from the
+     * for .. in construct in that:
+     * <BR> - it doesn't perform ToObject on the right hand side
+     * <BR> - it returns true for DontEnum properties.
+     * @param a the left hand operand
+     * @param b the right hand operand
+     *
+     * @return true if property name or element number a is a property of b
+     */
+    public static boolean in(Object a, Object b, Context cx)
+    {
+        if (!(b instanceof Scriptable)) {
+            throw typeError0("msg.instanceof.not.object");
+        }
+
+        return hasObjectElem((Scriptable)b, a, cx);
+    }
+
+    public static boolean cmp_LT(Object val1, Object val2)
+    {
+        double d1, d2;
+        if (val1 instanceof Number && val2 instanceof Number) {
+            d1 = ((Number)val1).doubleValue();
+            d2 = ((Number)val2).doubleValue();
+        } else {
+            if (val1 instanceof Scriptable)
+                val1 = ((Scriptable) val1).getDefaultValue(NumberClass);
+            if (val2 instanceof Scriptable)
+                val2 = ((Scriptable) val2).getDefaultValue(NumberClass);
+            if (val1 instanceof String && val2 instanceof String) {
+                return ((String)val1).compareTo((String)val2) < 0;
+            }
+            d1 = toNumber(val1);
+            d2 = toNumber(val2);
+        }
+        return d1 < d2;
+    }
+
+    public static boolean cmp_LE(Object val1, Object val2)
+    {
+        double d1, d2;
+        if (val1 instanceof Number && val2 instanceof Number) {
+            d1 = ((Number)val1).doubleValue();
+            d2 = ((Number)val2).doubleValue();
+        } else {
+            if (val1 instanceof Scriptable)
+                val1 = ((Scriptable) val1).getDefaultValue(NumberClass);
+            if (val2 instanceof Scriptable)
+                val2 = ((Scriptable) val2).getDefaultValue(NumberClass);
+            if (val1 instanceof String && val2 instanceof String) {
+                return ((String)val1).compareTo((String)val2) <= 0;
+            }
+            d1 = toNumber(val1);
+            d2 = toNumber(val2);
+        }
+        return d1 <= d2;
+    }
+
+    // ------------------
+    // Statements
+    // ------------------
+
+    public static ScriptableObject getGlobal(Context cx) {
+        final String GLOBAL_CLASS = "org.mozilla.javascript.tools.shell.Global";
+        Class globalClass = Kit.classOrNull(GLOBAL_CLASS);
+        if (globalClass != null) {
+            try {
+                Class[] parm = { ScriptRuntime.ContextClass };
+                Constructor globalClassCtor = globalClass.getConstructor(parm);
+                Object[] arg = { cx };
+                return (ScriptableObject) globalClassCtor.newInstance(arg);
+            } catch (Exception e) {
+                // fall through...
+            }
+        }
+        return new ImporterTopLevel(cx);
+    }
+
+    public static boolean hasTopCall(Context cx)
+    {
+        return (cx.topCallScope != null);
+    }
+
+    public static Scriptable getTopCallScope(Context cx)
+    {
+        Scriptable scope = cx.topCallScope;
+        if (scope == null) {
+            throw new IllegalStateException();
+        }
+        return scope;
+    }
+
+    public static Object doTopCall(Callable callable,
+                                   Context cx, Scriptable scope,
+                                   Scriptable thisObj, Object[] args)
+    {
+        if (scope == null) throw new IllegalArgumentException();
+        if (cx.topCallScope != null) throw new IllegalStateException();
+
+        Object result;
+        cx.topCallScope = ScriptableObject.getTopLevelScope(scope);
+        cx.useDynamicScope = cx.hasFeature(Context.FEATURE_DYNAMIC_SCOPE);
+        ContextFactory f = cx.getFactory();
+        try {
+            result = f.doTopCall(callable, cx, scope, thisObj, args);
+        } finally {
+            cx.topCallScope = null;
+            // Cleanup cached references
+            cx.cachedXMLLib = null;
+
+            if (cx.currentActivationCall != null) {
+                // Function should always call exitActivationFunction
+                // if it creates activation record
+                throw new IllegalStateException();
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Return <tt>possibleDynamicScope</tt> if <tt>staticTopScope</tt>
+     * is present on its prototype chain and return <tt>staticTopScope</tt>
+     * otherwise.
+     * Should only be called when <tt>staticTopScope</tt> is top scope.
+     */
+    static Scriptable checkDynamicScope(Scriptable possibleDynamicScope,
+                                        Scriptable staticTopScope)
+    {
+        // Return cx.topCallScope if scope
+        if (possibleDynamicScope == staticTopScope) {
+            return possibleDynamicScope;
+        }
+        Scriptable proto = possibleDynamicScope;
+        for (;;) {
+            proto = proto.getPrototype();
+            if (proto == staticTopScope) {
+                return possibleDynamicScope;
+            }
+            if (proto == null) {
+                return staticTopScope;
+            }
+        }
+    }
+    
+    public static void addInstructionCount(Context cx, int instructionsToAdd)
+    {
+    	cx.instructionCount += instructionsToAdd;
+        if (cx.instructionCount > cx.instructionThreshold) 
+        {
+            cx.observeInstructionCount(cx.instructionCount);
+            cx.instructionCount = 0;
+        }
+    }
+
+    public static void initScript(NativeFunction funObj, Scriptable thisObj,
+                                  Context cx, Scriptable scope,
+                                  boolean evalScript)
+    {
+        if (cx.topCallScope == null)
+            throw new IllegalStateException();
+
+        int varCount = funObj.getParamAndVarCount();
+        if (varCount != 0) {
+
+            Scriptable varScope = scope;
+            // Never define any variables from var statements inside with
+            // object. See bug 38590.
+            while (varScope instanceof NativeWith) {
+                varScope = varScope.getParentScope();
+            }
+
+            for (int i = varCount; i-- != 0;) {
+                String name = funObj.getParamOrVarName(i);
+                boolean isConst = funObj.getParamOrVarConst(i);
+                // Don't overwrite existing def if already defined in object
+                // or prototypes of object.
+                if (!ScriptableObject.hasProperty(scope, name)) {
+                    if (!evalScript) {
+                        // Global var definitions are supposed to be DONTDELETE
+                        if (isConst)
+                            ScriptableObject.defineConstProperty(varScope, name);
+                        else
+                            ScriptableObject.defineProperty(
+                                varScope, name, Undefined.instance,
+                                ScriptableObject.PERMANENT);
+                    } else {
+                        varScope.put(name, varScope, Undefined.instance);
+                    }
+                } else {
+                    ScriptableObject.redefineProperty(scope, name, isConst);
+                }
+            }
+        }
+    }
+
+    public static Scriptable createFunctionActivation(NativeFunction funObj,
+                                                      Scriptable scope,
+                                                      Object[] args)
+    {
+        return new NativeCall(funObj, scope, args);
+    }
+
+
+    public static void enterActivationFunction(Context cx,
+                                               Scriptable scope)
+    {
+        if (cx.topCallScope == null)
+            throw new IllegalStateException();
+        NativeCall call = (NativeCall)scope;
+        call.parentActivationCall = cx.currentActivationCall;
+        cx.currentActivationCall = call;
+    }
+
+    public static void exitActivationFunction(Context cx)
+    {
+        NativeCall call = cx.currentActivationCall;
+        cx.currentActivationCall = call.parentActivationCall;
+        call.parentActivationCall = null;
+    }
+
+    static NativeCall findFunctionActivation(Context cx, Function f)
+    {
+        NativeCall call = cx.currentActivationCall;
+        while (call != null) {
+            if (call.function == f)
+                return call;
+            call = call.parentActivationCall;
+        }
+        return null;
+    }
+
+    public static Scriptable newCatchScope(Throwable t,
+                                           Scriptable lastCatchScope,
+                                           String exceptionName,
+                                           Context cx, Scriptable scope)
+    {
+        Object obj;
+        boolean cacheObj;
+
+      getObj:
+        if (t instanceof JavaScriptException) {
+            cacheObj = false;
+            obj = ((JavaScriptException)t).getValue();
+        } else {
+            cacheObj = true;
+
+            // Create wrapper object unless it was associated with
+            // the previous scope object
+
+            if (lastCatchScope != null) {
+                NativeObject last = (NativeObject)lastCatchScope;
+                obj = last.getAssociatedValue(t);
+                if (obj == null) Kit.codeBug();
+                break getObj;
+            }
+
+            RhinoException re;
+            String errorName;
+            String errorMsg;
+            Throwable javaException = null;
+
+            if (t instanceof EcmaError) {
+                EcmaError ee = (EcmaError)t;
+                re = ee;
+                errorName = ee.getName();
+                errorMsg = ee.getErrorMessage();
+            } else if (t instanceof WrappedException) {
+                WrappedException we = (WrappedException)t;
+                re = we;
+                javaException = we.getWrappedException();
+                errorName = "JavaException";
+                errorMsg = javaException.getClass().getName()
+                           +": "+javaException.getMessage();
+            } else if (t instanceof EvaluatorException) {
+                // Pure evaluator exception, nor WrappedException instance
+                EvaluatorException ee = (EvaluatorException)t;
+                re = ee;
+                errorName = "InternalError";
+                errorMsg = ee.getMessage();
+            } else if (cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS)) {
+                // With FEATURE_ENHANCED_JAVA_ACCESS, scripts can catch
+                // all exception types
+                re = new WrappedException(t);
+                errorName = "JavaException";
+                errorMsg = t.toString();
+            } else {
+                // Script can catch only instances of JavaScriptException,
+                // EcmaError and EvaluatorException
+                throw Kit.codeBug();
+            }
+
+            String sourceUri = re.sourceName();
+            if (sourceUri == null) {
+                sourceUri = "";
+            }
+            int line = re.lineNumber();
+            Object args[];
+            if (line > 0) {
+                args = new Object[] { errorMsg, sourceUri, new Integer(line) };
+            } else {
+                args = new Object[] { errorMsg, sourceUri };
+            }
+
+            Scriptable errorObject = cx.newObject(scope, errorName, args);
+            ScriptableObject.putProperty(errorObject, "name", errorName);
+
+            if (javaException != null) {
+                Object wrap = cx.getWrapFactory().wrap(cx, scope, javaException,
+                                                       null);
+                ScriptableObject.defineProperty(
+                    errorObject, "javaException", wrap,
+                    ScriptableObject.PERMANENT | ScriptableObject.READONLY);
+            }
+            Object wrap = cx.getWrapFactory().wrap(cx, scope, re, null);
+            ScriptableObject.defineProperty(
+                errorObject, "rhinoException", wrap,
+                ScriptableObject.PERMANENT | ScriptableObject.READONLY);
+
+            obj = errorObject;
+        }
+
+        NativeObject catchScopeObject = new NativeObject();
+        // See ECMA 12.4
+        catchScopeObject.defineProperty(
+            exceptionName, obj, ScriptableObject.PERMANENT);
+
+        // Add special Rhino object __exception__ defined in the catch
+        // scope that can be used to retrieve the Java exception associated
+        // with the JavaScript exception (to get stack trace info, etc.)
+        /*APPJET NOJAVA*/
+        /*catchScopeObject.defineProperty(
+            "__exception__", Context.javaToJS(t, scope),
+            ScriptableObject.PERMANENT|ScriptableObject.DONTENUM);*/
+
+        if (cacheObj) {
+            catchScopeObject.associateValue(t, obj);
+        }
+        return catchScopeObject;
+    }
+
+    public static Scriptable enterWith(Object obj, Context cx,
+                                       Scriptable scope)
+    {
+        Scriptable sobj = toObjectOrNull(cx, obj);
+        if (sobj == null) {
+            throw typeError1("msg.undef.with", toString(obj));
+        }
+        if (sobj instanceof XMLObject) {
+            XMLObject xmlObject = (XMLObject)sobj;
+            return xmlObject.enterWith(scope);
+        }
+        return new NativeWith(scope, sobj);
+    }
+
+    public static Scriptable leaveWith(Scriptable scope)
+    {
+        NativeWith nw = (NativeWith)scope;
+        return nw.getParentScope();
+    }
+
+    public static Scriptable enterDotQuery(Object value, Scriptable scope)
+    {
+        if (!(value instanceof XMLObject)) {
+            throw notXmlError(value);
+        }
+        XMLObject object = (XMLObject)value;
+        return object.enterDotQuery(scope);
+    }
+
+    public static Object updateDotQuery(boolean value, Scriptable scope)
+    {
+        // Return null to continue looping
+        NativeWith nw = (NativeWith)scope;
+        return nw.updateDotQuery(value);
+    }
+
+    public static Scriptable leaveDotQuery(Scriptable scope)
+    {
+        NativeWith nw = (NativeWith)scope;
+        return nw.getParentScope();
+    }
+
+    public static void setFunctionProtoAndParent(BaseFunction fn,
+                                                 Scriptable scope)
+    {
+        fn.setParentScope(scope);
+        fn.setPrototype(ScriptableObject.getFunctionPrototype(scope));
+    }
+
+    public static void setObjectProtoAndParent(ScriptableObject object,
+                                               Scriptable scope)
+    {
+        // Compared with function it always sets the scope to top scope
+        scope = ScriptableObject.getVeryTopLevelScope(scope); // APPJET
+        object.setParentScope(scope);
+        Scriptable proto
+            = ScriptableObject.getClassPrototype(scope, object.getClassName());
+        object.setPrototype(proto);
+    }
+
+    public static void initFunction(Context cx, Scriptable scope,
+                                    NativeFunction function, int type,
+                                    boolean fromEvalCode)
+    {
+        if (type == FunctionNode.FUNCTION_STATEMENT) {
+            String name = function.getFunctionName();
+            if (name != null && name.length() != 0) {
+                if (!fromEvalCode) {
+                    // ECMA specifies that functions defined in global and
+                    // function scope outside eval should have DONTDELETE set.
+                    ScriptableObject.defineProperty
+                        (scope, name, function, ScriptableObject.PERMANENT);
+                } else {
+                    scope.put(name, scope, function);
+                }
+            }
+        } else if (type == FunctionNode.FUNCTION_EXPRESSION_STATEMENT) {
+            String name = function.getFunctionName();
+            if (name != null && name.length() != 0) {
+                // Always put function expression statements into initial
+                // activation object ignoring the with statement to follow
+                // SpiderMonkey
+                while (scope instanceof NativeWith) {
+                    scope = scope.getParentScope();
+                }
+                scope.put(name, scope, function);
+            }
+        } else {
+            throw Kit.codeBug();
+        }
+    }
+
+    public static Scriptable newArrayLiteral(Object[] objects,
+                                             int[] skipIndices,
+                                             Context cx, Scriptable scope)
+    {
+        final int SKIP_DENSITY = 2;
+        int count = objects.length;
+        int skipCount = 0;
+        if (skipIndices != null) {
+            skipCount = skipIndices.length;
+        }
+        int length = count + skipCount;
+        if (length > 1 && skipCount * SKIP_DENSITY < length) {
+            // If not too sparse, create whole array for constructor
+            Object[] sparse;
+            if (skipCount == 0) {
+                sparse = objects;
+            } else {
+                sparse = new Object[length];
+                int skip = 0;
+                for (int i = 0, j = 0; i != length; ++i) {
+                    if (skip != skipCount && skipIndices[skip] == i) {
+                        sparse[i] = Scriptable.NOT_FOUND;
+                        ++skip;
+                        continue;
+                    }
+                    sparse[i] = objects[j];
+                    ++j;
+                }
+            }
+            return cx.newObject(scope, "Array", sparse);
+        }
+        
+        Scriptable arrayObj = cx.newObject(scope, "Array",
+                                           ScriptRuntime.emptyArgs);
+        int skip = 0;
+        for (int i = 0, j = 0; i != length; ++i) {
+            if (skip != skipCount && skipIndices[skip] == i) {
+                ++skip;
+                continue;
+            }
+            ScriptableObject.putProperty(arrayObj, i, objects[j]);
+            ++j;
+        }
+        return arrayObj;
+    }
+
+  /**
+   * This method is here for backward compat with existing compiled code.  It
+   * is called when an object literal is compiled.  The next instance will be
+   * the version called from new code.
+   * @deprecated This method only present for compatibility.
+   */
+    public static Scriptable newObjectLiteral(Object[] propertyIds,
+                                              Object[] propertyValues,
+                                              Context cx, Scriptable scope)
+    {
+        // This will initialize to all zeros, exactly what we need for old-style
+        // getterSetters values (no getters or setters in the list)
+        int [] getterSetters = new int[propertyIds.length];
+        return newObjectLiteral(propertyIds, propertyValues, getterSetters,
+                cx, scope);
+    }
+
+    public static Scriptable newObjectLiteral(Object[] propertyIds,
+                                              Object[] propertyValues,
+                                              int [] getterSetters,
+                                              Context cx, Scriptable scope)
+    {
+        Scriptable object = cx.newObject(scope);
+        for (int i = 0, end = propertyIds.length; i != end; ++i) {
+            Object id = propertyIds[i];
+            int getterSetter = getterSetters[i];
+            Object value = propertyValues[i];
+            if (id instanceof String) {
+                if (getterSetter == 0)
+                    ScriptableObject.putProperty(object, (String)id, value);
+                else {
+                    Callable fun;
+                    String definer;
+                    if (getterSetter < 0)   // < 0 means get foo() ...
+                        definer = "__defineGetter__";
+                    else
+                        definer = "__defineSetter__";
+                    fun = getPropFunctionAndThis(object, definer, cx);
+                    // Must consume the last scriptable object in cx
+                    lastStoredScriptable(cx);
+                    Object[] outArgs = new Object[2];
+                    outArgs[0] = id;
+                    outArgs[1] = value;
+                    fun.call(cx, scope, object, outArgs);
+                }              
+            } else {
+                int index = ((Integer)id).intValue();
+                ScriptableObject.putProperty(object, index, value);
+            }
+        }
+        return object;
+    }
+
+    public static boolean isArrayObject(Object obj)
+    {
+        return obj instanceof NativeArray || obj instanceof Arguments;
+    }
+
+    public static Object[] getArrayElements(Scriptable object)
+    {
+        Context cx = Context.getContext();
+        long longLen = NativeArray.getLengthProperty(cx, object);
+        if (longLen > Integer.MAX_VALUE) {
+            // arrays beyond  MAX_INT is not in Java in any case
+            throw new IllegalArgumentException();
+        }
+        int len = (int) longLen;
+        if (len == 0) {
+            return ScriptRuntime.emptyArgs;
+        } else {
+            Object[] result = new Object[len];
+            for (int i=0; i < len; i++) {
+                Object elem = ScriptableObject.getProperty(object, i);
+                result[i] = (elem == Scriptable.NOT_FOUND) ? Undefined.instance
+                                                           : elem;
+            }
+            return result;
+        }
+    }
+
+    static void checkDeprecated(Context cx, String name) {
+        int version = cx.getLanguageVersion();
+        if (version >= Context.VERSION_1_4 || version == Context.VERSION_DEFAULT) {
+            String msg = getMessage1("msg.deprec.ctor", name);
+            if (version == Context.VERSION_DEFAULT)
+                Context.reportWarning(msg);
+            else
+                throw Context.reportRuntimeError(msg);
+        }
+    }
+
+    public static String getMessage0(String messageId)
+    {
+        return getMessage(messageId, null);
+    }
+
+    public static String getMessage1(String messageId, Object arg1)
+    {
+        Object[] arguments = {arg1};
+        return getMessage(messageId, arguments);
+    }
+
+    public static String getMessage2(
+        String messageId, Object arg1, Object arg2)
+    {
+        Object[] arguments = {arg1, arg2};
+        return getMessage(messageId, arguments);
+    }
+
+    public static String getMessage3(
+        String messageId, Object arg1, Object arg2, Object arg3)
+    {
+        Object[] arguments = {arg1, arg2, arg3};
+        return getMessage(messageId, arguments);
+    }
+
+    public static String getMessage4(
+        String messageId, Object arg1, Object arg2, Object arg3, Object arg4)
+    {
+        Object[] arguments = {arg1, arg2, arg3, arg4};
+        return getMessage(messageId, arguments);
+    }
+
+    /* OPT there's a noticable delay for the first error!  Maybe it'd
+     * make sense to use a ListResourceBundle instead of a properties
+     * file to avoid (synchronized) text parsing.
+     */
+    public static String getMessage(String messageId, Object[] arguments)
+    {
+        final String defaultResource
+            = "org.mozilla.javascript.resources.Messages";
+
+        Context cx = Context.getCurrentContext();
+        Locale locale = cx != null ? cx.getLocale() : Locale.getDefault();
+
+        // ResourceBundle does cacheing.
+        ResourceBundle rb = ResourceBundle.getBundle(defaultResource, locale);
+
+        String formatString;
+        try {
+            formatString = rb.getString(messageId);
+        } catch (java.util.MissingResourceException mre) {
+            throw new RuntimeException
+                ("no message resource found for message property "+ messageId);
+        }
+
+        /*
+         * It's OK to format the string, even if 'arguments' is null;
+         * we need to format it anyway, to make double ''s collapse to
+         * single 's.
+         */
+        MessageFormat formatter = new MessageFormat(formatString);
+        return formatter.format(arguments);
+    }
+
+    public static EcmaError constructError(String error, String message)
+    {
+        int[] linep = new int[1];
+        String filename = Context.getSourcePositionFromStack(linep);
+        return constructError(error, message, filename, linep[0], null, 0);
+    }
+    
+    public static EcmaError constructError(String error,
+                                           String message,
+                                           int lineNumberDelta)
+    {
+        int[] linep = new int[1];
+        String filename = Context.getSourcePositionFromStack(linep);
+        if (linep[0] != 0) {
+            linep[0] += lineNumberDelta;
+        }
+        return constructError(error, message, filename, linep[0], null, 0);
+    }
+
+    public static EcmaError constructError(String error,
+                                           String message,
+                                           String sourceName,
+                                           int lineNumber,
+                                           String lineSource,
+                                           int columnNumber)
+    {
+        return new EcmaError(error, message, sourceName,
+                             lineNumber, lineSource, columnNumber);
+    }
+
+    public static EcmaError typeError(String message)
+    {
+        return constructError("TypeError", message);
+    }
+
+    public static EcmaError typeError0(String messageId)
+    {
+        String msg = getMessage0(messageId);
+        return typeError(msg);
+    }
+
+    public static EcmaError typeError1(String messageId, String arg1)
+    {
+        String msg = getMessage1(messageId, arg1);
+        return typeError(msg);
+    }
+
+    public static EcmaError typeError2(String messageId, String arg1,
+                                       String arg2)
+    {
+        String msg = getMessage2(messageId, arg1, arg2);
+        return typeError(msg);
+    }
+
+    public static EcmaError typeError3(String messageId, String arg1,
+                                       String arg2, String arg3)
+    {
+        String msg = getMessage3(messageId, arg1, arg2, arg3);
+        return typeError(msg);
+    }
+
+    public static RuntimeException undefReadError(Object object, Object id)
+    {
+        String idStr = (id == null) ? "null" : id.toString();
+        return typeError2("msg.undef.prop.read", toString(object), idStr);
+    }
+
+    public static RuntimeException undefCallError(Object object, Object id)
+    {
+        String idStr = (id == null) ? "null" : id.toString();
+        return typeError2("msg.undef.method.call", toString(object), idStr);
+    }
+
+    public static RuntimeException undefWriteError(Object object,
+                                                   Object id,
+                                                   Object value)
+    {
+        String idStr = (id == null) ? "null" : id.toString();
+        String valueStr = (value instanceof Scriptable)
+                          ? value.toString() : toString(value);
+        return typeError3("msg.undef.prop.write", toString(object), idStr,
+                          valueStr);
+    }
+
+    public static RuntimeException notFoundError(Scriptable object,
+                                                 String property)
+    {
+        // XXX: use object to improve the error message
+        String msg = getMessage1("msg.is.not.defined", property);
+        throw constructError("ReferenceError", msg);
+    }
+
+    public static RuntimeException notFunctionError(Object value)
+    {
+        return notFunctionError(value, value);
+    }
+
+    public static RuntimeException notFunctionError(Object value,
+                                                    Object messageHelper)
+    {
+        // Use value for better error reporting
+        String msg = (messageHelper == null)
+                     ? "null" : messageHelper.toString();
+        if (value == Scriptable.NOT_FOUND) {
+            return typeError1("msg.function.not.found", msg);
+        }
+        return typeError2("msg.isnt.function", msg, typeof(value));
+    }
+
+    public static RuntimeException notFunctionError(Object obj, Object value,
+            String propertyName)
+    {
+        // Use obj and value for better error reporting
+        String objString = toString(obj);
+        if (value == Scriptable.NOT_FOUND) {
+            return typeError2("msg.function.not.found.in", propertyName,
+                    objString);
+        }
+        return typeError3("msg.isnt.function.in", propertyName, objString,
+                          typeof(value));
+    }
+
+    private static RuntimeException notXmlError(Object value)
+    {
+        throw typeError1("msg.isnt.xml.object", toString(value));
+    }
+
+    private static void warnAboutNonJSObject(Object nonJSObject)
+    {
+        String message =
+"RHINO USAGE WARNING: Missed Context.javaToJS() conversion:\n"
++"Rhino runtime detected object "+nonJSObject+" of class "+nonJSObject.getClass().getName()+" where it expected String, Number, Boolean or Scriptable instance. Please check your code for missing Context.javaToJS() call.";
+        Context.reportWarning(message);
+        // Just to be sure that it would be noticed
+        System.err.println(message);
+    }
+
+    public static RegExpProxy getRegExpProxy(Context cx)
+    {
+        return cx.getRegExpProxy();
+    }
+
+    public static void setRegExpProxy(Context cx, RegExpProxy proxy)
+    {
+        if (proxy == null) throw new IllegalArgumentException();
+        cx.regExpProxy = proxy;
+    }
+
+    public static RegExpProxy checkRegExpProxy(Context cx)
+    {
+        RegExpProxy result = getRegExpProxy(cx);
+        if (result == null) {
+            throw Context.reportRuntimeError0("msg.no.regexp");
+        }
+        return result;
+    }
+
+    private static XMLLib currentXMLLib(Context cx)
+    {
+        // Scripts should be running to access this
+        if (cx.topCallScope == null)
+            throw new IllegalStateException();
+
+        XMLLib xmlLib = cx.cachedXMLLib;
+        if (xmlLib == null) {
+            xmlLib = XMLLib.extractFromScope(cx.topCallScope);
+            if (xmlLib == null)
+                throw new IllegalStateException();
+            cx.cachedXMLLib = xmlLib;
+        }
+
+        return xmlLib;
+    }
+
+    /**
+     * Escapes the reserved characters in a value of an attribute
+     *
+     * @param value Unescaped text
+     * @return The escaped text
+     */
+    public static String escapeAttributeValue(Object value, Context cx)
+    {
+        XMLLib xmlLib = currentXMLLib(cx);
+        return xmlLib.escapeAttributeValue(value);
+    }
+
+    /**
+     * Escapes the reserved characters in a value of a text node
+     *
+     * @param value Unescaped text
+     * @return The escaped text
+     */
+    public static String escapeTextValue(Object value, Context cx)
+    {
+        XMLLib xmlLib = currentXMLLib(cx);
+        return xmlLib.escapeTextValue(value);
+    }
+
+    public static Ref memberRef(Object obj, Object elem,
+                                Context cx, int memberTypeFlags)
+    {
+        if (!(obj instanceof XMLObject)) {
+            throw notXmlError(obj);
+        }
+        XMLObject xmlObject = (XMLObject)obj;
+        return xmlObject.memberRef(cx, elem, memberTypeFlags);
+    }
+
+    public static Ref memberRef(Object obj, Object namespace, Object elem,
+                                Context cx, int memberTypeFlags)
+    {
+        if (!(obj instanceof XMLObject)) {
+            throw notXmlError(obj);
+        }
+        XMLObject xmlObject = (XMLObject)obj;
+        return xmlObject.memberRef(cx, namespace, elem, memberTypeFlags);
+    }
+
+    public static Ref nameRef(Object name, Context cx,
+                              Scriptable scope, int memberTypeFlags)
+    {
+        XMLLib xmlLib = currentXMLLib(cx);
+        return xmlLib.nameRef(cx, name, scope, memberTypeFlags);
+    }
+
+    public static Ref nameRef(Object namespace, Object name, Context cx,
+                              Scriptable scope, int memberTypeFlags)
+    {
+        XMLLib xmlLib = currentXMLLib(cx);
+        return xmlLib.nameRef(cx, namespace, name, scope, memberTypeFlags);
+    }
+
+    private static void storeIndexResult(Context cx, int index)
+    {
+        cx.scratchIndex = index;
+    }
+
+    static int lastIndexResult(Context cx)
+    {
+        return cx.scratchIndex;
+    }
+
+    public static void storeUint32Result(Context cx, long value)
+    {
+        if ((value >>> 32) != 0)
+            throw new IllegalArgumentException();
+        cx.scratchUint32 = value;
+    }
+
+    public static long lastUint32Result(Context cx)
+    {
+        long value = cx.scratchUint32;
+        if ((value >>> 32) != 0)
+            throw new IllegalStateException();
+        return value;
+    }
+
+    private static void storeScriptable(Context cx, Scriptable value)
+    {
+        // The previosly stored scratchScriptable should be consumed
+        if (cx.scratchScriptable != null)
+            throw new IllegalStateException();
+        cx.scratchScriptable = value;
+    }
+
+    public static Scriptable lastStoredScriptable(Context cx)
+    {
+        Scriptable result = cx.scratchScriptable;
+        cx.scratchScriptable = null;
+        return result;
+    }
+
+    static String makeUrlForGeneratedScript
+        (boolean isEval, String masterScriptUrl, int masterScriptLine)
+    {
+        if (isEval) {
+            return masterScriptUrl+'#'+masterScriptLine+"(eval)";
+        } else {
+            return masterScriptUrl+'#'+masterScriptLine+"(Function)";
+        }
+    }
+
+    static boolean isGeneratedScript(String sourceUrl) {
+        // ALERT: this may clash with a valid URL containing (eval) or
+        // (Function)
+        return sourceUrl.indexOf("(eval)") >= 0
+               || sourceUrl.indexOf("(Function)") >= 0;
+    }
+
+    private static RuntimeException errorWithClassName(String msg, Object val)
+    {
+        return Context.reportRuntimeError1(msg, val.getClass().getName());
+    }
+
+    public static final Object[] emptyArgs = new Object[0];
+    public static final String[] emptyStrings = new String[0];
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Scriptable.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Scriptable.java
new file mode 100644
index 0000000..74e5ba7
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Scriptable.java
@@ -0,0 +1,342 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * This is interface that all objects in JavaScript must implement.
+ * The interface provides for the management of properties and for
+ * performing conversions.
+ * <p>
+ * Host system implementors may find it easier to extend the ScriptableObject
+ * class rather than implementing Scriptable when writing host objects.
+ * <p>
+ * There are many static methods defined in ScriptableObject that perform
+ * the multiple calls to the Scriptable interface needed in order to
+ * manipulate properties in prototype chains.
+ * <p>
+ *
+ * @see org.mozilla.javascript.ScriptableObject
+ * @author Norris Boyd
+ * @author Nick Thompson
+ * @author Brendan Eich
+ */
+
+public interface Scriptable {
+
+    /**
+     * Get the name of the set of objects implemented by this Java class.
+     * This corresponds to the [[Class]] operation in ECMA and is used
+     * by Object.prototype.toString() in ECMA.<p>
+     * See ECMA 8.6.2 and 15.2.4.2.
+     */
+    public String getClassName();
+
+    /**
+     * Value returned from <code>get</code> if the property is not
+     * found.
+     */
+    public static final Object NOT_FOUND = UniqueTag.NOT_FOUND;
+
+    /**
+     * Get a named property from the object.
+     *
+     * Looks property up in this object and returns the associated value
+     * if found. Returns NOT_FOUND if not found.
+     * Note that this method is not expected to traverse the prototype
+     * chain. This is different from the ECMA [[Get]] operation.
+     *
+     * Depending on the property selector, the runtime will call
+     * this method or the form of <code>get</code> that takes an
+     * integer:
+     * <table>
+     * <tr><th>JavaScript code</th><th>Java code</th></tr>
+     * <tr><td>a.b      </td><td>a.get("b", a)</td></tr>
+     * <tr><td>a["foo"] </td><td>a.get("foo", a)</td></tr>
+     * <tr><td>a[3]     </td><td>a.get(3, a)</td></tr>
+     * <tr><td>a["3"]   </td><td>a.get(3, a)</td></tr>
+     * <tr><td>a[3.0]   </td><td>a.get(3, a)</td></tr>
+     * <tr><td>a["3.0"] </td><td>a.get("3.0", a)</td></tr>
+     * <tr><td>a[1.1]   </td><td>a.get("1.1", a)</td></tr>
+     * <tr><td>a[-4]    </td><td>a.get(-4, a)</td></tr>
+     * </table>
+     * <p>
+     * The values that may be returned are limited to the following:
+     * <UL>
+     * <LI>java.lang.Boolean objects</LI>
+     * <LI>java.lang.String objects</LI>
+     * <LI>java.lang.Number objects</LI>
+     * <LI>org.mozilla.javascript.Scriptable objects</LI>
+     * <LI>null</LI>
+     * <LI>The value returned by Context.getUndefinedValue()</LI>
+     * <LI>NOT_FOUND</LI>
+     * </UL>
+     * @param name the name of the property
+     * @param start the object in which the lookup began
+     * @return the value of the property (may be null), or NOT_FOUND
+     * @see org.mozilla.javascript.Context#getUndefinedValue
+     */
+    public Object get(String name, Scriptable start);
+
+    /**
+     * Get a property from the object selected by an integral index.
+     *
+     * Identical to <code>get(String, Scriptable)</code> except that
+     * an integral index is used to select the property.
+     *
+     * @param index the numeric index for the property
+     * @param start the object in which the lookup began
+     * @return the value of the property (may be null), or NOT_FOUND
+     * @see org.mozilla.javascript.Scriptable#get(String,Scriptable)
+     */
+    public Object get(int index, Scriptable start);
+
+    /**
+     * Indicates whether or not a named property is defined in an object.
+     *
+     * Does not traverse the prototype chain.<p>
+     *
+     * The property is specified by a String name
+     * as defined for the <code>get</code> method.<p>
+     *
+     * @param name the name of the property
+     * @param start the object in which the lookup began
+     * @return true if and only if the named property is found in the object
+     * @see org.mozilla.javascript.Scriptable#get(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#getProperty(Scriptable, String)
+     */
+    public boolean has(String name, Scriptable start);
+
+    /**
+     * Indicates whether or not an indexed  property is defined in an object.
+     *
+     * Does not traverse the prototype chain.<p>
+     *
+     * The property is specified by an integral index
+     * as defined for the <code>get</code> method.<p>
+     *
+     * @param index the numeric index for the property
+     * @param start the object in which the lookup began
+     * @return true if and only if the indexed property is found in the object
+     * @see org.mozilla.javascript.Scriptable#get(int, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#getProperty(Scriptable, int)
+     */
+    public boolean has(int index, Scriptable start);
+
+    /**
+     * Sets a named property in this object.
+     * <p>
+     * The property is specified by a string name
+     * as defined for <code>get</code>.
+     * <p>
+     * The possible values that may be passed in are as defined for
+     * <code>get</code>. A class that implements this method may choose
+     * to ignore calls to set certain properties, in which case those
+     * properties are effectively read-only.<p>
+     * For properties defined in a prototype chain,
+     * use <code>putProperty</code> in ScriptableObject. <p>
+     * Note that if a property <i>a</i> is defined in the prototype <i>p</i>
+     * of an object <i>o</i>, then evaluating <code>o.a = 23</code> will cause
+     * <code>set</code> to be called on the prototype <i>p</i> with
+     * <i>o</i> as the  <i>start</i> parameter.
+     * To preserve JavaScript semantics, it is the Scriptable
+     * object's responsibility to modify <i>o</i>. <p>
+     * This design allows properties to be defined in prototypes and implemented
+     * in terms of getters and setters of Java values without consuming slots
+     * in each instance.<p>
+     * <p>
+     * The values that may be set are limited to the following:
+     * <UL>
+     * <LI>java.lang.Boolean objects</LI>
+     * <LI>java.lang.String objects</LI>
+     * <LI>java.lang.Number objects</LI>
+     * <LI>org.mozilla.javascript.Scriptable objects</LI>
+     * <LI>null</LI>
+     * <LI>The value returned by Context.getUndefinedValue()</LI>
+     * </UL><p>
+     * Arbitrary Java objects may be wrapped in a Scriptable by first calling
+     * <code>Context.toObject</code>. This allows the property of a JavaScript
+     * object to contain an arbitrary Java object as a value.<p>
+     * Note that <code>has</code> will be called by the runtime first before
+     * <code>set</code> is called to determine in which object the
+     * property is defined.
+     * Note that this method is not expected to traverse the prototype chain,
+     * which is different from the ECMA [[Put]] operation.
+     * @param name the name of the property
+     * @param start the object whose property is being set
+     * @param value value to set the property to
+     * @see org.mozilla.javascript.Scriptable#has(String, Scriptable)
+     * @see org.mozilla.javascript.Scriptable#get(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#putProperty(Scriptable, String, Object)
+     * @see org.mozilla.javascript.Context#toObject(Object, Scriptable)
+     */
+    public void put(String name, Scriptable start, Object value);
+
+    /**
+     * Sets an indexed property in this object.
+     * <p>
+     * The property is specified by an integral index
+     * as defined for <code>get</code>.<p>
+     *
+     * Identical to <code>put(String, Scriptable, Object)</code> except that
+     * an integral index is used to select the property.
+     *
+     * @param index the numeric index for the property
+     * @param start the object whose property is being set
+     * @param value value to set the property to
+     * @see org.mozilla.javascript.Scriptable#has(int, Scriptable)
+     * @see org.mozilla.javascript.Scriptable#get(int, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#putProperty(Scriptable, int, Object)
+     * @see org.mozilla.javascript.Context#toObject(Object, Scriptable)
+     */
+    public void put(int index, Scriptable start, Object value);
+
+    /**
+     * Removes a property from this object.
+     * This operation corresponds to the ECMA [[Delete]] except that
+     * the no result is returned. The runtime will guarantee that this
+     * method is called only if the property exists. After this method
+     * is called, the runtime will call Scriptable.has to see if the
+     * property has been removed in order to determine the boolean
+     * result of the delete operator as defined by ECMA 11.4.1.
+     * <p>
+     * A property can be made permanent by ignoring calls to remove
+     * it.<p>
+     * The property is specified by a String name
+     * as defined for <code>get</code>.
+     * <p>
+     * To delete properties defined in a prototype chain,
+     * see deleteProperty in ScriptableObject.
+     * @param name the identifier for the property
+     * @see org.mozilla.javascript.Scriptable#get(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#deleteProperty(Scriptable, String)
+     */
+    public void delete(String name);
+
+    /**
+     * Removes a property from this object.
+     *
+     * The property is specified by an integral index
+     * as defined for <code>get</code>.
+     * <p>
+     * To delete properties defined in a prototype chain,
+     * see deleteProperty in ScriptableObject.
+     *
+     * Identical to <code>delete(String)</code> except that
+     * an integral index is used to select the property.
+     *
+     * @param index the numeric index for the property
+     * @see org.mozilla.javascript.Scriptable#get(int, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#deleteProperty(Scriptable, int)
+     */
+    public void delete(int index);
+
+    /**
+     * Get the prototype of the object.
+     * @return the prototype
+     */
+    public Scriptable getPrototype();
+
+    /**
+     * Set the prototype of the object.
+     * @param prototype the prototype to set
+     */
+    public void setPrototype(Scriptable prototype);
+
+    /**
+     * Get the parent scope of the object.
+     * @return the parent scope
+     */
+    public Scriptable getParentScope();
+
+    /**
+     * Set the parent scope of the object.
+     * @param parent the parent scope to set
+     */
+    public void setParentScope(Scriptable parent);
+
+    /**
+     * Get an array of property ids.
+     *
+     * Not all property ids need be returned. Those properties
+     * whose ids are not returned are considered non-enumerable.
+     *
+     * @return an array of Objects. Each entry in the array is either
+     *         a java.lang.String or a java.lang.Number
+     */
+    public Object[] getIds();
+
+    /**
+     * Get the default value of the object with a given hint.
+     * The hints are String.class for type String, Number.class for type
+     * Number, Scriptable.class for type Object, and Boolean.class for
+     * type Boolean. <p>
+     *
+     * A <code>hint</code> of null means "no hint".
+     *
+     * See ECMA 8.6.2.6.
+     *
+     * @param hint the type hint
+     * @return the default value
+     */
+    public Object getDefaultValue(Class hint);
+
+    /**
+     * The instanceof operator.
+     *
+     * <p>
+     * The JavaScript code "lhs instanceof rhs" causes rhs.hasInstance(lhs) to
+     * be called.
+     *
+     * <p>
+     * The return value is implementation dependent so that embedded host objects can
+     * return an appropriate value.  See the JS 1.3 language documentation for more
+     * detail.
+     *
+     * <p>This operator corresponds to the proposed EMCA [[HasInstance]] operator.
+     *
+     * @param instance The value that appeared on the LHS of the instanceof
+     *              operator
+     *
+     * @return an implementation dependent value
+     */
+    public boolean hasInstance(Scriptable instance);
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptableObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptableObject.java
new file mode 100644
index 0000000..53de1fc
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ScriptableObject.java
@@ -0,0 +1,2428 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Roger Lawrence
+ *   Steve Weiss
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.*;
+import java.util.Hashtable;
+import java.io.*;
+import org.mozilla.javascript.debug.DebuggableObject;
+
+/**
+ * This is the default implementation of the Scriptable interface. This
+ * class provides convenient default behavior that makes it easier to
+ * define host objects.
+ * <p>
+ * Various properties and methods of JavaScript objects can be conveniently
+ * defined using methods of ScriptableObject.
+ * <p>
+ * Classes extending ScriptableObject must define the getClassName method.
+ *
+ * @see org.mozilla.javascript.Scriptable
+ * @author Norris Boyd
+ */
+
+public abstract class ScriptableObject implements Scriptable, Serializable,
+                                                  DebuggableObject,
+                                                  ConstProperties
+{
+
+    /**
+     * The empty property attribute.
+     *
+     * Used by getAttributes() and setAttributes().
+     *
+     * @see org.mozilla.javascript.ScriptableObject#getAttributes(String)
+     * @see org.mozilla.javascript.ScriptableObject#setAttributes(String, int)
+     */
+    public static final int EMPTY =     0x00;
+
+    /**
+     * Property attribute indicating assignment to this property is ignored.
+     *
+     * @see org.mozilla.javascript.ScriptableObject
+     *      #put(String, Scriptable, Object)
+     * @see org.mozilla.javascript.ScriptableObject#getAttributes(String)
+     * @see org.mozilla.javascript.ScriptableObject#setAttributes(String, int)
+     */
+    public static final int READONLY =  0x01;
+
+    /**
+     * Property attribute indicating property is not enumerated.
+     *
+     * Only enumerated properties will be returned by getIds().
+     *
+     * @see org.mozilla.javascript.ScriptableObject#getIds()
+     * @see org.mozilla.javascript.ScriptableObject#getAttributes(String)
+     * @see org.mozilla.javascript.ScriptableObject#setAttributes(String, int)
+     */
+    public static final int DONTENUM =  0x02;
+
+    /**
+     * Property attribute indicating property cannot be deleted.
+     *
+     * @see org.mozilla.javascript.ScriptableObject#delete(String)
+     * @see org.mozilla.javascript.ScriptableObject#getAttributes(String)
+     * @see org.mozilla.javascript.ScriptableObject#setAttributes(String, int)
+     */
+    public static final int PERMANENT = 0x04;
+
+    /**
+     * Property attribute indicating that this is a const property that has not
+     * been assigned yet.  The first 'const' assignment to the property will
+     * clear this bit.
+     */
+    public static final int UNINITIALIZED_CONST = 0x08;
+
+    public static final int CONST = PERMANENT|READONLY|UNINITIALIZED_CONST;
+    /**
+     * The prototype of this object.
+     */
+    private Scriptable prototypeObject;
+
+    /**
+     * The parent scope of this object.
+     */
+    private Scriptable parentScopeObject;
+
+    private static final Slot REMOVED = new Slot(null, 0, READONLY);
+
+    static {
+        REMOVED.wasDeleted = 1;
+    }
+
+    private transient Slot[] slots;
+    // If count >= 0, it gives number of keys or if count < 0,
+    // it indicates sealed object where ~count gives number of keys
+    private int count;
+
+    // cache; may be removed for smaller memory footprint
+    private transient Slot lastAccess = REMOVED;
+
+    // associated values are not serialized
+    private transient volatile Hashtable associatedValues;
+
+    private static final int SLOT_QUERY = 1;
+    private static final int SLOT_MODIFY = 2;
+    private static final int SLOT_REMOVE = 3;
+    private static final int SLOT_MODIFY_GETTER_SETTER = 4;
+    private static final int SLOT_MODIFY_CONST = 5;
+
+    private static class Slot implements Serializable
+    {
+        static final long serialVersionUID = -3539051633409902634L;
+
+        String name; // This can change due to caching
+        int indexOrHash;
+        private volatile short attributes;
+        transient volatile byte wasDeleted;
+        volatile Object value;
+        transient volatile Slot next;
+
+        Slot(String name, int indexOrHash, int attributes)
+        {
+            this.name = name;
+            this.indexOrHash = indexOrHash;
+            this.attributes = (short)attributes;
+        }
+
+        private void readObject(ObjectInputStream in)
+            throws IOException, ClassNotFoundException
+        {
+            in.defaultReadObject();
+            if (name != null) {
+                indexOrHash = name.hashCode();
+            }
+        }
+
+        final int getAttributes()
+        {
+            return attributes;
+        }
+
+        final synchronized void setAttributes(int value)
+        {
+            checkValidAttributes(value);
+            attributes = (short)value;
+        }
+
+        final void checkNotReadonly()
+        {
+            if ((attributes & READONLY) != 0) {
+                String str = (name != null ? name
+                              : Integer.toString(indexOrHash));
+                throw Context.reportRuntimeError1("msg.modify.readonly", str);
+            }
+        }
+
+    }
+
+    private static final class GetterSlot extends Slot
+    {
+        static final long serialVersionUID = -4900574849788797588L;
+
+        Object getter;
+        Object setter;
+
+        GetterSlot(String name, int indexOrHash, int attributes)
+        {
+            super(name, indexOrHash, attributes);
+        }
+    }
+
+    static void checkValidAttributes(int attributes)
+    {
+        final int mask = READONLY | DONTENUM | PERMANENT | UNINITIALIZED_CONST;
+        if ((attributes & ~mask) != 0) {
+            throw new IllegalArgumentException(String.valueOf(attributes));
+        }
+    }
+
+    public ScriptableObject()
+    {
+    }
+
+    public ScriptableObject(Scriptable scope, Scriptable prototype)
+    {
+        if (scope == null)
+            throw new IllegalArgumentException();
+
+        parentScopeObject = scope;
+        prototypeObject = prototype;
+    }
+
+    /**
+     * Return the name of the class.
+     *
+     * This is typically the same name as the constructor.
+     * Classes extending ScriptableObject must implement this abstract
+     * method.
+     */
+    public abstract String getClassName();
+
+    /**
+     * Returns true if the named property is defined.
+     *
+     * @param name the name of the property
+     * @param start the object in which the lookup began
+     * @return true if and only if the property was found in the object
+     */
+    public boolean has(String name, Scriptable start)
+    {
+        return null != getSlot(name, 0, SLOT_QUERY);
+    }
+
+    /**
+     * Returns true if the property index is defined.
+     *
+     * @param index the numeric index for the property
+     * @param start the object in which the lookup began
+     * @return true if and only if the property was found in the object
+     */
+    public boolean has(int index, Scriptable start)
+    {
+        return null != getSlot(null, index, SLOT_QUERY);
+    }
+
+    /**
+     * Returns the value of the named property or NOT_FOUND.
+     *
+     * If the property was created using defineProperty, the
+     * appropriate getter method is called.
+     *
+     * @param name the name of the property
+     * @param start the object in which the lookup began
+     * @return the value of the property (may be null), or NOT_FOUND
+     */
+    public Object get(String name, Scriptable start)
+    {
+        return getImpl(name, 0, start);
+    }
+
+    /**
+     * Returns the value of the indexed property or NOT_FOUND.
+     *
+     * @param index the numeric index for the property
+     * @param start the object in which the lookup began
+     * @return the value of the property (may be null), or NOT_FOUND
+     */
+    public Object get(int index, Scriptable start)
+    {
+        return getImpl(null, index, start);
+    }
+
+    /**
+     * Sets the value of the named property, creating it if need be.
+     *
+     * If the property was created using defineProperty, the
+     * appropriate setter method is called. <p>
+     *
+     * If the property's attributes include READONLY, no action is
+     * taken.
+     * This method will actually set the property in the start
+     * object.
+     *
+     * @param name the name of the property
+     * @param start the object whose property is being set
+     * @param value value to set the property to
+     */
+    public void put(String name, Scriptable start, Object value)
+    {
+        if (putImpl(name, 0, start, value, EMPTY))
+            return;
+
+        if (start == this) throw Kit.codeBug();
+        start.put(name, start, value);
+    }
+
+    /**
+     * Sets the value of the indexed property, creating it if need be.
+     *
+     * @param index the numeric index for the property
+     * @param start the object whose property is being set
+     * @param value value to set the property to
+     */
+    public void put(int index, Scriptable start, Object value)
+    {
+        if (putImpl(null, index, start, value, EMPTY))
+            return;
+
+        if (start == this) throw Kit.codeBug();
+        start.put(index, start, value);
+    }
+
+    /**
+     * Removes a named property from the object.
+     *
+     * If the property is not found, or it has the PERMANENT attribute,
+     * no action is taken.
+     *
+     * @param name the name of the property
+     */
+    public void delete(String name)
+    {
+        checkNotSealed(name, 0);
+        accessSlot(name, 0, SLOT_REMOVE);
+    }
+
+    /**
+     * Removes the indexed property from the object.
+     *
+     * If the property is not found, or it has the PERMANENT attribute,
+     * no action is taken.
+     *
+     * @param index the numeric index for the property
+     */
+    public void delete(int index)
+    {
+        checkNotSealed(null, index);
+        accessSlot(null, index, SLOT_REMOVE);
+    }
+
+    /**
+     * Sets the value of the named const property, creating it if need be.
+     *
+     * If the property was created using defineProperty, the
+     * appropriate setter method is called. <p>
+     *
+     * If the property's attributes include READONLY, no action is
+     * taken.
+     * This method will actually set the property in the start
+     * object.
+     *
+     * @param name the name of the property
+     * @param start the object whose property is being set
+     * @param value value to set the property to
+     */
+    public void putConst(String name, Scriptable start, Object value)
+    {
+        if (putImpl(name, 0, start, value, READONLY))
+            return;
+
+        if (start == this) throw Kit.codeBug();
+        if (start instanceof ConstProperties)
+            ((ConstProperties)start).putConst(name, start, value);
+        else
+            start.put(name, start, value);
+    }
+
+    public void defineConst(String name, Scriptable start)
+    {
+        if (putImpl(name, 0, start, Undefined.instance, UNINITIALIZED_CONST))
+            return;
+
+        if (start == this) throw Kit.codeBug();
+        if (start instanceof ConstProperties)
+            ((ConstProperties)start).defineConst(name, start);
+    }
+    /**
+     * Returns true if the named property is defined as a const on this object.
+     * @param name
+     * @return true if the named property is defined as a const, false
+     * otherwise.
+     */
+    public boolean isConst(String name)
+    {
+        Slot slot = getSlot(name, 0, SLOT_QUERY);
+        if (slot == null) {
+            return false;
+        }
+        return (slot.getAttributes() & (PERMANENT|READONLY)) ==
+                                       (PERMANENT|READONLY);
+
+    }
+    /**
+     * @deprecated Use {@link #getAttributes(String name)}. The engine always
+     * ignored the start argument.
+     */
+    public final int getAttributes(String name, Scriptable start)
+    {
+        return getAttributes(name);
+    }
+
+    /**
+     * @deprecated Use {@link #getAttributes(int index)}. The engine always
+     * ignored the start argument.
+     */
+    public final int getAttributes(int index, Scriptable start)
+    {
+        return getAttributes(index);
+    }
+
+    /**
+     * @deprecated Use {@link #setAttributes(String name, int attributes)}.
+     * The engine always ignored the start argument.
+     */
+    public final void setAttributes(String name, Scriptable start,
+                                    int attributes)
+    {
+        setAttributes(name, attributes);
+    }
+
+    /**
+     * @deprecated Use {@link #setAttributes(int index, int attributes)}.
+     * The engine always ignored the start argument.
+     */
+    public void setAttributes(int index, Scriptable start,
+                              int attributes)
+    {
+        setAttributes(index, attributes);
+    }
+
+    /**
+     * Get the attributes of a named property.
+     *
+     * The property is specified by <code>name</code>
+     * as defined for <code>has</code>.<p>
+     *
+     * @param name the identifier for the property
+     * @return the bitset of attributes
+     * @exception EvaluatorException if the named property is not found
+     * @see org.mozilla.javascript.ScriptableObject#has(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#READONLY
+     * @see org.mozilla.javascript.ScriptableObject#DONTENUM
+     * @see org.mozilla.javascript.ScriptableObject#PERMANENT
+     * @see org.mozilla.javascript.ScriptableObject#EMPTY
+     */
+    public int getAttributes(String name)
+    {
+        return findAttributeSlot(name, 0, SLOT_QUERY).getAttributes();
+    }
+
+    /**
+     * Get the attributes of an indexed property.
+     *
+     * @param index the numeric index for the property
+     * @exception EvaluatorException if the named property is not found
+     *            is not found
+     * @return the bitset of attributes
+     * @see org.mozilla.javascript.ScriptableObject#has(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#READONLY
+     * @see org.mozilla.javascript.ScriptableObject#DONTENUM
+     * @see org.mozilla.javascript.ScriptableObject#PERMANENT
+     * @see org.mozilla.javascript.ScriptableObject#EMPTY
+     */
+    public int getAttributes(int index)
+    {
+        return findAttributeSlot(null, index, SLOT_QUERY).getAttributes();
+    }
+
+    /**
+     * Set the attributes of a named property.
+     *
+     * The property is specified by <code>name</code>
+     * as defined for <code>has</code>.<p>
+     *
+     * The possible attributes are READONLY, DONTENUM,
+     * and PERMANENT. Combinations of attributes
+     * are expressed by the bitwise OR of attributes.
+     * EMPTY is the state of no attributes set. Any unused
+     * bits are reserved for future use.
+     *
+     * @param name the name of the property
+     * @param attributes the bitset of attributes
+     * @exception EvaluatorException if the named property is not found
+     * @see org.mozilla.javascript.Scriptable#has(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#READONLY
+     * @see org.mozilla.javascript.ScriptableObject#DONTENUM
+     * @see org.mozilla.javascript.ScriptableObject#PERMANENT
+     * @see org.mozilla.javascript.ScriptableObject#EMPTY
+     */
+    public void setAttributes(String name, int attributes)
+    {
+        checkNotSealed(name, 0);
+        findAttributeSlot(name, 0, SLOT_MODIFY).setAttributes(attributes);
+    }
+
+    /**
+     * Set the attributes of an indexed property.
+     *
+     * @param index the numeric index for the property
+     * @param attributes the bitset of attributes
+     * @exception EvaluatorException if the named property is not found
+     * @see org.mozilla.javascript.Scriptable#has(String, Scriptable)
+     * @see org.mozilla.javascript.ScriptableObject#READONLY
+     * @see org.mozilla.javascript.ScriptableObject#DONTENUM
+     * @see org.mozilla.javascript.ScriptableObject#PERMANENT
+     * @see org.mozilla.javascript.ScriptableObject#EMPTY
+     */
+    public void setAttributes(int index, int attributes)
+    {
+        checkNotSealed(null, index);
+        findAttributeSlot(null, index, SLOT_MODIFY).setAttributes(attributes);
+    }
+
+    /**
+     * XXX: write docs.
+     */
+    public void setGetterOrSetter(String name, int index,
+                                  Callable getterOrSeter, boolean isSetter)
+    {
+        if (name != null && index != 0)
+            throw new IllegalArgumentException(name);
+
+        checkNotSealed(name, index);
+        GetterSlot gslot = (GetterSlot)getSlot(name, index,
+                                               SLOT_MODIFY_GETTER_SETTER);
+        gslot.checkNotReadonly();
+        if (isSetter) {
+            gslot.setter = getterOrSeter;
+        } else {
+            gslot.getter = getterOrSeter;
+        }
+        gslot.value = Undefined.instance;
+    }
+    
+    /**
+     * Get the getter or setter for a given property. Used by __lookupGetter__
+     * and __lookupSetter__.
+     * 
+     * @param name Name of the object. If nonnull, index must be 0.
+     * @param index Index of the object. If nonzero, name must be null.
+     * @param isSetter If true, return the setter, otherwise return the getter.
+     * @exception IllegalArgumentException if both name and index are nonnull
+     *            and nonzero respectively.
+     * @return Null if the property does not exist. Otherwise returns either 
+     *         the getter or the setter for the property, depending on 
+     *         the value of isSetter (may be undefined if unset).
+     */
+    public Object getGetterOrSetter(String name, int index, boolean isSetter)
+    {
+        if (name != null && index != 0)
+            throw new IllegalArgumentException(name);
+        Slot slot = getSlot(name, index, SLOT_QUERY);
+        if (slot == null)
+            return null;
+        if (slot instanceof GetterSlot) {
+            GetterSlot gslot = (GetterSlot)slot;
+            Object result = isSetter ? gslot.setter : gslot.getter;
+            return result != null ? result : Undefined.instance;
+        } else
+            return Undefined.instance;
+    }
+
+    /**
+     * Returns whether a property is a getter or a setter
+     * @param name property name
+     * @param index property index
+     * @param setter true to check for a setter, false for a getter
+     * @return whether the property is a getter or a setter
+     */
+    protected boolean isGetterOrSetter(String name, int index, boolean setter) {
+        Slot slot = getSlot(name, index, SLOT_QUERY);
+        if (slot instanceof GetterSlot) {
+            if (setter && ((GetterSlot)slot).setter != null) return true;
+            if (!setter && ((GetterSlot)slot).getter != null) return true;
+        }
+        return false;
+    }
+
+    void addLazilyInitializedValue(String name, int index,
+                                   LazilyLoadedCtor init, int attributes)
+    {
+        if (name != null && index != 0)
+            throw new IllegalArgumentException(name);
+        checkNotSealed(name, index);
+        GetterSlot gslot = (GetterSlot)getSlot(name, index,
+                                               SLOT_MODIFY_GETTER_SETTER);
+        gslot.setAttributes(attributes);
+        gslot.getter = null;
+        gslot.setter = null;
+        gslot.value = init;
+    }
+
+    /**
+     * Returns the prototype of the object.
+     */
+    public Scriptable getPrototype()
+    {
+        return prototypeObject;
+    }
+
+    /**
+     * Sets the prototype of the object.
+     */
+    public void setPrototype(Scriptable m)
+    {
+        prototypeObject = m;
+    }
+
+    /**
+     * Returns the parent (enclosing) scope of the object.
+     */
+    public Scriptable getParentScope()
+    {
+        return parentScopeObject;
+    }
+
+    /**
+     * Sets the parent (enclosing) scope of the object.
+     */
+    public void setParentScope(Scriptable m)
+    {
+        parentScopeObject = m;
+    }
+
+    /**
+     * Returns an array of ids for the properties of the object.
+     *
+     * <p>Any properties with the attribute DONTENUM are not listed. <p>
+     *
+     * @return an array of java.lang.Objects with an entry for every
+     * listed property. Properties accessed via an integer index will
+     * have a corresponding
+     * Integer entry in the returned array. Properties accessed by
+     * a String will have a String entry in the returned array.
+     */
+    public Object[] getIds() {
+        return getIds(false);
+    }
+
+    /**
+     * Returns an array of ids for the properties of the object.
+     *
+     * <p>All properties, even those with attribute DONTENUM, are listed. <p>
+     *
+     * @return an array of java.lang.Objects with an entry for every
+     * listed property. Properties accessed via an integer index will
+     * have a corresponding
+     * Integer entry in the returned array. Properties accessed by
+     * a String will have a String entry in the returned array.
+     */
+    public Object[] getAllIds() {
+        return getIds(true);
+    }
+
+    /**
+     * Implements the [[DefaultValue]] internal method.
+     *
+     * <p>Note that the toPrimitive conversion is a no-op for
+     * every type other than Object, for which [[DefaultValue]]
+     * is called. See ECMA 9.1.<p>
+     *
+     * A <code>hint</code> of null means "no hint".
+     *
+     * @param typeHint the type hint
+     * @return the default value for the object
+     *
+     * See ECMA 8.6.2.6.
+     */
+    public Object getDefaultValue(Class typeHint)
+    {
+        return getDefaultValue(this, typeHint);
+    }
+    
+    public static Object getDefaultValue(Scriptable object, Class typeHint)
+    {
+        Context cx = null;
+        for (int i=0; i < 2; i++) {
+            boolean tryToString;
+            if (typeHint == ScriptRuntime.StringClass) {
+                tryToString = (i == 0);
+            } else {
+                tryToString = (i == 1);
+            }
+
+            String methodName;
+            Object[] args;
+            if (tryToString) {
+                methodName = "toString";
+                args = ScriptRuntime.emptyArgs;
+            } else {
+                methodName = "valueOf";
+                args = new Object[1];
+                String hint;
+                if (typeHint == null) {
+                    hint = "undefined";
+                } else if (typeHint == ScriptRuntime.StringClass) {
+                    hint = "string";
+                } else if (typeHint == ScriptRuntime.ScriptableClass) {
+                    hint = "object";
+                } else if (typeHint == ScriptRuntime.FunctionClass) {
+                    hint = "function";
+                } else if (typeHint == ScriptRuntime.BooleanClass
+                           || typeHint == Boolean.TYPE)
+                {
+                    hint = "boolean";
+                } else if (typeHint == ScriptRuntime.NumberClass ||
+                         typeHint == ScriptRuntime.ByteClass ||
+                         typeHint == Byte.TYPE ||
+                         typeHint == ScriptRuntime.ShortClass ||
+                         typeHint == Short.TYPE ||
+                         typeHint == ScriptRuntime.IntegerClass ||
+                         typeHint == Integer.TYPE ||
+                         typeHint == ScriptRuntime.FloatClass ||
+                         typeHint == Float.TYPE ||
+                         typeHint == ScriptRuntime.DoubleClass ||
+                         typeHint == Double.TYPE)
+                {
+                    hint = "number";
+                } else {
+                    throw Context.reportRuntimeError1(
+                        "msg.invalid.type", typeHint.toString());
+                }
+                args[0] = hint;
+            }
+            Object v = getProperty(object, methodName);
+            if (!(v instanceof Function))
+                continue;
+            Function fun = (Function) v;
+            if (cx == null)
+                cx = Context.getContext();
+            v = fun.call(cx, fun.getParentScope(), object, args);
+            if (v != null) {
+                if (!(v instanceof Scriptable)) {
+                    return v;
+                }
+                if (typeHint == ScriptRuntime.ScriptableClass
+                    || typeHint == ScriptRuntime.FunctionClass)
+                {
+                    return v;
+                }
+                if (tryToString && v instanceof Wrapper) {
+                    // Let a wrapped java.lang.String pass for a primitive
+                    // string.
+                    Object u = ((Wrapper)v).unwrap();
+                    if (u instanceof String)
+                        return u;
+                }
+            }
+        }
+        // fall through to error
+        String arg = (typeHint == null) ? "undefined" : typeHint.getName();
+        throw ScriptRuntime.typeError1("msg.default.value", arg);
+    }
+
+    /**
+     * Implements the instanceof operator.
+     *
+     * <p>This operator has been proposed to ECMA.
+     *
+     * @param instance The value that appeared on the LHS of the instanceof
+     *              operator
+     * @return true if "this" appears in value's prototype chain
+     *
+     */
+    public boolean hasInstance(Scriptable instance) {
+        // Default for JS objects (other than Function) is to do prototype
+        // chasing.  This will be overridden in NativeFunction and non-JS
+        // objects.
+
+        return ScriptRuntime.jsDelegatesTo(instance, this);
+    }
+    
+    /**
+     * Emulate the SpiderMonkey (and Firefox) feature of allowing
+     * custom objects to avoid detection by normal "object detection"
+     * code patterns. This is used to implement document.all.
+     * See https://bugzilla.mozilla.org/show_bug.cgi?id=412247.
+     * This is an analog to JOF_DETECTING from SpiderMonkey; see
+     * https://bugzilla.mozilla.org/show_bug.cgi?id=248549.
+     * Other than this special case, embeddings should return false.
+     * @return true if this object should avoid object detection
+     * @since 1.7R1
+     */
+    public boolean avoidObjectDetection() {
+        return false;
+    }
+
+    /**
+     * Custom <tt>==</tt> operator.
+     * Must return {@link Scriptable#NOT_FOUND} if this object does not
+     * have custom equality operator for the given value,
+     * <tt>Boolean.TRUE</tt> if this object is equivalent to <tt>value</tt>,
+     * <tt>Boolean.FALSE</tt> if this object is not equivalent to
+     * <tt>value</tt>.
+     * <p>
+     * The default implementation returns Boolean.TRUE
+     * if <tt>this == value</tt> or {@link Scriptable#NOT_FOUND} otherwise.
+     * It indicates that by default custom equality is available only if
+     * <tt>value</tt> is <tt>this</tt> in which case true is returned.
+     */
+    protected Object equivalentValues(Object value)
+    {
+        return (this == value) ? Boolean.TRUE : Scriptable.NOT_FOUND;
+    }
+
+    /**
+     * Defines JavaScript objects from a Java class that implements Scriptable.
+     *
+     * If the given class has a method
+     * <pre>
+     * static void init(Context cx, Scriptable scope, boolean sealed);</pre>
+     *
+     * or its compatibility form
+     * <pre>
+     * static void init(Scriptable scope);</pre>
+     *
+     * then it is invoked and no further initialization is done.<p>
+     *
+     * However, if no such a method is found, then the class's constructors and
+     * methods are used to initialize a class in the following manner.<p>
+     *
+     * First, the zero-parameter constructor of the class is called to
+     * create the prototype. If no such constructor exists,
+     * a {@link EvaluatorException} is thrown. <p>
+     *
+     * Next, all methods are scanned for special prefixes that indicate that they
+     * have special meaning for defining JavaScript objects.
+     * These special prefixes are
+     * <ul>
+     * <li><code>jsFunction_</code> for a JavaScript function
+     * <li><code>jsStaticFunction_</code> for a JavaScript function that
+     *           is a property of the constructor
+     * <li><code>jsGet_</code> for a getter of a JavaScript property
+     * <li><code>jsSet_</code> for a setter of a JavaScript property
+     * <li><code>jsConstructor</code> for a JavaScript function that
+     *           is the constructor
+     * </ul><p>
+     *
+     * If the method's name begins with "jsFunction_", a JavaScript function
+     * is created with a name formed from the rest of the Java method name
+     * following "jsFunction_". So a Java method named "jsFunction_foo" will
+     * define a JavaScript method "foo". Calling this JavaScript function
+     * will cause the Java method to be called. The parameters of the method
+     * must be of number and types as defined by the FunctionObject class.
+     * The JavaScript function is then added as a property
+     * of the prototype. <p>
+     *
+     * If the method's name begins with "jsStaticFunction_", it is handled
+     * similarly except that the resulting JavaScript function is added as a
+     * property of the constructor object. The Java method must be static.
+     *
+     * If the method's name begins with "jsGet_" or "jsSet_", the method is
+     * considered to define a property. Accesses to the defined property
+     * will result in calls to these getter and setter methods. If no
+     * setter is defined, the property is defined as READONLY.<p>
+     *
+     * If the method's name is "jsConstructor", the method is
+     * considered to define the body of the constructor. Only one
+     * method of this name may be defined.
+     * If no method is found that can serve as constructor, a Java
+     * constructor will be selected to serve as the JavaScript
+     * constructor in the following manner. If the class has only one
+     * Java constructor, that constructor is used to define
+     * the JavaScript constructor. If the the class has two constructors,
+     * one must be the zero-argument constructor (otherwise an
+     * {@link EvaluatorException} would have already been thrown
+     * when the prototype was to be created). In this case
+     * the Java constructor with one or more parameters will be used
+     * to define the JavaScript constructor. If the class has three
+     * or more constructors, an {@link EvaluatorException}
+     * will be thrown.<p>
+     *
+     * Finally, if there is a method
+     * <pre>
+     * static void finishInit(Scriptable scope, FunctionObject constructor,
+     *                        Scriptable prototype)</pre>
+     *
+     * it will be called to finish any initialization. The <code>scope</code>
+     * argument will be passed, along with the newly created constructor and
+     * the newly created prototype.<p>
+     *
+     * @param scope The scope in which to define the constructor.
+     * @param clazz The Java class to use to define the JavaScript objects
+     *              and properties.
+     * @exception IllegalAccessException if access is not available
+     *            to a reflected class member
+     * @exception InstantiationException if unable to instantiate
+     *            the named class
+     * @exception InvocationTargetException if an exception is thrown
+     *            during execution of methods of the named class
+     * @see org.mozilla.javascript.Function
+     * @see org.mozilla.javascript.FunctionObject
+     * @see org.mozilla.javascript.ScriptableObject#READONLY
+     * @see org.mozilla.javascript.ScriptableObject
+     *      #defineProperty(String, Class, int)
+     */
+    public static void defineClass(Scriptable scope, Class clazz)
+        throws IllegalAccessException, InstantiationException,
+               InvocationTargetException
+    {
+        defineClass(scope, clazz, false, false);
+    }
+
+    /**
+     * Defines JavaScript objects from a Java class, optionally
+     * allowing sealing.
+     *
+     * Similar to <code>defineClass(Scriptable scope, Class clazz)</code>
+     * except that sealing is allowed. An object that is sealed cannot have
+     * properties added or removed. Note that sealing is not allowed in
+     * the current ECMA/ISO language specification, but is likely for
+     * the next version.
+     *
+     * @param scope The scope in which to define the constructor.
+     * @param clazz The Java class to use to define the JavaScript objects
+     *              and properties. The class must implement Scriptable.
+     * @param sealed Whether or not to create sealed standard objects that
+     *               cannot be modified.
+     * @exception IllegalAccessException if access is not available
+     *            to a reflected class member
+     * @exception InstantiationException if unable to instantiate
+     *            the named class
+     * @exception InvocationTargetException if an exception is thrown
+     *            during execution of methods of the named class
+     * @since 1.4R3
+     */
+    public static void defineClass(Scriptable scope, Class clazz,
+                                   boolean sealed)
+        throws IllegalAccessException, InstantiationException,
+               InvocationTargetException
+    {
+        defineClass(scope, clazz, sealed, false);
+    }
+
+    /**
+     * Defines JavaScript objects from a Java class, optionally
+     * allowing sealing and mapping of Java inheritance to JavaScript
+     * prototype-based inheritance.
+     *
+     * Similar to <code>defineClass(Scriptable scope, Class clazz)</code>
+     * except that sealing and inheritance mapping are allowed. An object
+     * that is sealed cannot have properties added or removed. Note that
+     * sealing is not allowed in the current ECMA/ISO language specification,
+     * but is likely for the next version.
+     *
+     * @param scope The scope in which to define the constructor.
+     * @param clazz The Java class to use to define the JavaScript objects
+     *              and properties. The class must implement Scriptable.
+     * @param sealed Whether or not to create sealed standard objects that
+     *               cannot be modified.
+     * @param mapInheritance Whether or not to map Java inheritance to
+     *                       JavaScript prototype-based inheritance.
+     * @return the class name for the prototype of the specified class
+     * @exception IllegalAccessException if access is not available
+     *            to a reflected class member
+     * @exception InstantiationException if unable to instantiate
+     *            the named class
+     * @exception InvocationTargetException if an exception is thrown
+     *            during execution of methods of the named class
+     * @since 1.6R2
+     */
+    public static String defineClass(Scriptable scope, Class clazz,
+                                     boolean sealed, boolean mapInheritance)
+        throws IllegalAccessException, InstantiationException,
+               InvocationTargetException
+    {
+        BaseFunction ctor = buildClassCtor(scope, clazz, sealed,
+                                           mapInheritance);
+        if (ctor == null)
+            return null;
+        String name = ctor.getClassPrototype().getClassName();
+        defineProperty(scope, name, ctor, ScriptableObject.DONTENUM);
+        return name;
+    }
+
+    static BaseFunction buildClassCtor(Scriptable scope, Class clazz,
+                                       boolean sealed,
+                                       boolean mapInheritance)
+        throws IllegalAccessException, InstantiationException,
+               InvocationTargetException
+    {
+        Method[] methods = FunctionObject.getMethodList(clazz);
+        for (int i=0; i < methods.length; i++) {
+            Method method = methods[i];
+            if (!method.getName().equals("init"))
+                continue;
+            Class[] parmTypes = method.getParameterTypes();
+            if (parmTypes.length == 3 &&
+                parmTypes[0] == ScriptRuntime.ContextClass &&
+                parmTypes[1] == ScriptRuntime.ScriptableClass &&
+                parmTypes[2] == Boolean.TYPE &&
+                Modifier.isStatic(method.getModifiers()))
+            {
+                Object args[] = { Context.getContext(), scope,
+                                  sealed ? Boolean.TRUE : Boolean.FALSE };
+                method.invoke(null, args);
+                return null;
+            }
+            if (parmTypes.length == 1 &&
+                parmTypes[0] == ScriptRuntime.ScriptableClass &&
+                Modifier.isStatic(method.getModifiers()))
+            {
+                Object args[] = { scope };
+                method.invoke(null, args);
+                return null;
+            }
+
+        }
+
+        // If we got here, there isn't an "init" method with the right
+        // parameter types.
+
+        Constructor[] ctors = clazz.getConstructors();
+        Constructor protoCtor = null;
+        for (int i=0; i < ctors.length; i++) {
+            if (ctors[i].getParameterTypes().length == 0) {
+                protoCtor = ctors[i];
+                break;
+            }
+        }
+        if (protoCtor == null) {
+            throw Context.reportRuntimeError1(
+                      "msg.zero.arg.ctor", clazz.getName());
+        }
+
+        Scriptable proto = (Scriptable) protoCtor.newInstance(ScriptRuntime.emptyArgs);
+        String className = proto.getClassName();
+
+        // Set the prototype's prototype, trying to map Java inheritance to JS
+        // prototype-based inheritance if requested to do so.
+        Scriptable superProto = null;
+        if (mapInheritance) {
+            Class superClass = clazz.getSuperclass();
+            if (ScriptRuntime.ScriptableClass.isAssignableFrom(superClass)
+                    && !Modifier.isAbstract(superClass.getModifiers())) {
+                String name = ScriptableObject.defineClass(scope, superClass, sealed, mapInheritance);
+                if (name != null) {
+                    superProto = ScriptableObject.getClassPrototype(scope, name);
+                }
+            }
+        }
+        if (superProto == null) {
+            superProto = ScriptableObject.getObjectPrototype(scope);
+        }
+        proto.setPrototype(superProto);
+
+        // Find out whether there are any methods that begin with
+        // "js". If so, then only methods that begin with special
+        // prefixes will be defined as JavaScript entities.
+        final String functionPrefix = "jsFunction_";
+        final String staticFunctionPrefix = "jsStaticFunction_";
+        final String getterPrefix = "jsGet_";
+        final String setterPrefix = "jsSet_";
+        final String ctorName = "jsConstructor";
+
+        Member ctorMember = FunctionObject.findSingleMethod(methods, ctorName);
+
+        if (ctorMember == null) {
+            if (ctors.length == 1) {
+                ctorMember = ctors[0];
+            } else if (ctors.length == 2) {
+                if (ctors[0].getParameterTypes().length == 0)
+                    ctorMember = ctors[1];
+                else if (ctors[1].getParameterTypes().length == 0)
+                    ctorMember = ctors[0];
+            }
+            if (ctorMember == null) {
+                throw Context.reportRuntimeError1(
+                          "msg.ctor.multiple.parms", clazz.getName());
+            }
+        }
+
+        FunctionObject ctor = new FunctionObject(className, ctorMember, scope);
+        if (ctor.isVarArgsMethod()) {
+            throw Context.reportRuntimeError1
+                ("msg.varargs.ctor", ctorMember.getName());
+        }
+        ctor.initAsConstructor(scope, proto);
+
+        Method finishInit = null;
+        for (int i=0; i < methods.length; i++) {
+            if (methods[i] == ctorMember) {
+                continue;
+            }
+            String name = methods[i].getName();
+            if (name.equals("finishInit")) {
+                Class[] parmTypes = methods[i].getParameterTypes();
+                if (parmTypes.length == 3 &&
+                    parmTypes[0] == ScriptRuntime.ScriptableClass &&
+                    parmTypes[1] == FunctionObject.class &&
+                    parmTypes[2] == ScriptRuntime.ScriptableClass &&
+                    Modifier.isStatic(methods[i].getModifiers()))
+                {
+                    finishInit = methods[i];
+                    continue;
+                }
+            }
+            // ignore any compiler generated methods.
+            if (name.indexOf('$') != -1)
+                continue;
+            if (name.equals(ctorName))
+                continue;
+
+            String prefix = null;
+            if (name.startsWith(functionPrefix)) {
+                prefix = functionPrefix;
+            } else if (name.startsWith(staticFunctionPrefix)) {
+                prefix = staticFunctionPrefix;
+                if (!Modifier.isStatic(methods[i].getModifiers())) {
+                    throw Context.reportRuntimeError(
+                        "jsStaticFunction must be used with static method.");
+                }
+            } else if (name.startsWith(getterPrefix)) {
+                prefix = getterPrefix;
+            } else if (name.startsWith(setterPrefix)) {
+                prefix = setterPrefix;
+            } else {
+                continue;
+            }
+            name = name.substring(prefix.length());
+            if (prefix == setterPrefix)
+                continue;   // deal with set when we see get
+            if (prefix == getterPrefix) {
+                if (!(proto instanceof ScriptableObject)) {
+                    throw Context.reportRuntimeError2(
+                        "msg.extend.scriptable",
+                        proto.getClass().toString(), name);
+                }
+                Method setter = FunctionObject.findSingleMethod(
+                                    methods,
+                                    setterPrefix + name);
+                int attr = ScriptableObject.PERMANENT |
+                           ScriptableObject.DONTENUM  |
+                           (setter != null ? 0
+                                           : ScriptableObject.READONLY);
+                ((ScriptableObject) proto).defineProperty(name, null,
+                                                          methods[i], setter,
+                                                          attr);
+                continue;
+            }
+
+            FunctionObject f = new FunctionObject(name, methods[i], proto);
+            if (f.isVarArgsConstructor()) {
+                throw Context.reportRuntimeError1
+                    ("msg.varargs.fun", ctorMember.getName());
+            }
+            Scriptable dest = prefix == staticFunctionPrefix
+                              ? ctor
+                              : proto;
+            defineProperty(dest, name, f, DONTENUM);
+            if (sealed) {
+                f.sealObject();
+            }
+        }
+
+        // Call user code to complete initialization if necessary.
+        if (finishInit != null) {
+            Object[] finishArgs = { scope, ctor, proto };
+            finishInit.invoke(null, finishArgs);
+        }
+
+        // Seal the object if necessary.
+        if (sealed) {
+            ctor.sealObject();
+            if (proto instanceof ScriptableObject) {
+                ((ScriptableObject) proto).sealObject();
+            }
+        }
+
+        return ctor;
+    }
+
+    /**
+     * Define a JavaScript property.
+     *
+     * Creates the property with an initial value and sets its attributes.
+     *
+     * @param propertyName the name of the property to define.
+     * @param value the initial value of the property
+     * @param attributes the attributes of the JavaScript property
+     * @see org.mozilla.javascript.Scriptable#put(String, Scriptable, Object)
+     */
+    public void defineProperty(String propertyName, Object value,
+                               int attributes)
+    {
+        checkNotSealed(propertyName, 0);
+        put(propertyName, this, value);
+        setAttributes(propertyName, attributes);
+    }
+
+    /**
+     * Utility method to add properties to arbitrary Scriptable object.
+     * If destination is instance of ScriptableObject, calls
+     * defineProperty there, otherwise calls put in destination
+     * ignoring attributes
+     */
+    public static void defineProperty(Scriptable destination,
+                                      String propertyName, Object value,
+                                      int attributes)
+    {
+        if (!(destination instanceof ScriptableObject)) {
+            destination.put(propertyName, destination, value);
+            return;
+        }
+        ScriptableObject so = (ScriptableObject)destination;
+        so.defineProperty(propertyName, value, attributes);
+    }
+
+    /**
+     * Utility method to add properties to arbitrary Scriptable object.
+     * If destination is instance of ScriptableObject, calls
+     * defineProperty there, otherwise calls put in destination
+     * ignoring attributes
+     */
+    public static void defineConstProperty(Scriptable destination,
+                                           String propertyName)
+    {
+        if (destination instanceof ConstProperties) {
+            ConstProperties cp = (ConstProperties)destination;
+            cp.defineConst(propertyName, destination);
+        } else
+            defineProperty(destination, propertyName, Undefined.instance, CONST);
+    }
+
+    /**
+     * Define a JavaScript property with getter and setter side effects.
+     *
+     * If the setter is not found, the attribute READONLY is added to
+     * the given attributes. <p>
+     *
+     * The getter must be a method with zero parameters, and the setter, if
+     * found, must be a method with one parameter.<p>
+     *
+     * @param propertyName the name of the property to define. This name
+     *                    also affects the name of the setter and getter
+     *                    to search for. If the propertyId is "foo", then
+     *                    <code>clazz</code> will be searched for "getFoo"
+     *                    and "setFoo" methods.
+     * @param clazz the Java class to search for the getter and setter
+     * @param attributes the attributes of the JavaScript property
+     * @see org.mozilla.javascript.Scriptable#put(String, Scriptable, Object)
+     */
+    public void defineProperty(String propertyName, Class clazz,
+                               int attributes)
+    {
+        int length = propertyName.length();
+        if (length == 0) throw new IllegalArgumentException();
+        char[] buf = new char[3 + length];
+        propertyName.getChars(0, length, buf, 3);
+        buf[3] = Character.toUpperCase(buf[3]);
+        buf[0] = 'g';
+        buf[1] = 'e';
+        buf[2] = 't';
+        String getterName = new String(buf);
+        buf[0] = 's';
+        String setterName = new String(buf);
+
+        Method[] methods = FunctionObject.getMethodList(clazz);
+        Method getter = FunctionObject.findSingleMethod(methods, getterName);
+        Method setter = FunctionObject.findSingleMethod(methods, setterName);
+        if (setter == null)
+            attributes |= ScriptableObject.READONLY;
+        defineProperty(propertyName, null, getter,
+                       setter == null ? null : setter, attributes);
+    }
+
+    /**
+     * Define a JavaScript property.
+     *
+     * Use this method only if you wish to define getters and setters for
+     * a given property in a ScriptableObject. To create a property without
+     * special getter or setter side effects, use
+     * <code>defineProperty(String,int)</code>.
+     *
+     * If <code>setter</code> is null, the attribute READONLY is added to
+     * the given attributes.<p>
+     *
+     * Several forms of getters or setters are allowed. In all cases the
+     * type of the value parameter can be any one of the following types:
+     * Object, String, boolean, Scriptable, byte, short, int, long, float,
+     * or double. The runtime will perform appropriate conversions based
+     * upon the type of the parameter (see description in FunctionObject).
+     * The first forms are nonstatic methods of the class referred to
+     * by 'this':
+     * <pre>
+     * Object getFoo();
+     * void setFoo(SomeType value);</pre>
+     * Next are static methods that may be of any class; the object whose
+     * property is being accessed is passed in as an extra argument:
+     * <pre>
+     * static Object getFoo(Scriptable obj);
+     * static void setFoo(Scriptable obj, SomeType value);</pre>
+     * Finally, it is possible to delegate to another object entirely using
+     * the <code>delegateTo</code> parameter. In this case the methods are
+     * nonstatic methods of the class delegated to, and the object whose
+     * property is being accessed is passed in as an extra argument:
+     * <pre>
+     * Object getFoo(Scriptable obj);
+     * void setFoo(Scriptable obj, SomeType value);</pre>
+     *
+     * @param propertyName the name of the property to define.
+     * @param delegateTo an object to call the getter and setter methods on,
+     *                   or null, depending on the form used above.
+     * @param getter the method to invoke to get the value of the property
+     * @param setter the method to invoke to set the value of the property
+     * @param attributes the attributes of the JavaScript property
+     */
+    public void defineProperty(String propertyName, Object delegateTo,
+                               Method getter, Method setter, int attributes)
+    {
+        MemberBox getterBox = null;
+        if (getter != null) {
+            getterBox = new MemberBox(getter);
+
+            boolean delegatedForm;
+            if (!Modifier.isStatic(getter.getModifiers())) {
+                delegatedForm = (delegateTo != null);
+                getterBox.delegateTo = delegateTo;
+            } else {
+                delegatedForm = true;
+                // Ignore delegateTo for static getter but store
+                // non-null delegateTo indicator.
+                getterBox.delegateTo = Void.TYPE;
+            }
+
+            String errorId = null;
+            Class[] parmTypes = getter.getParameterTypes();
+            if (parmTypes.length == 0) {
+                if (delegatedForm) {
+                    errorId = "msg.obj.getter.parms";
+                }
+            } else if (parmTypes.length == 1) {
+                Object argType = parmTypes[0];
+                // Allow ScriptableObject for compatibility
+                if (!(argType == ScriptRuntime.ScriptableClass ||
+                      argType == ScriptRuntime.ScriptableObjectClass))
+                {
+                    errorId = "msg.bad.getter.parms";
+                } else if (!delegatedForm) {
+                    errorId = "msg.bad.getter.parms";
+                }
+            } else {
+                errorId = "msg.bad.getter.parms";
+            }
+            if (errorId != null) {
+                throw Context.reportRuntimeError1(errorId, getter.toString());
+            }
+        }
+
+        MemberBox setterBox = null;
+        if (setter != null) {
+            if (setter.getReturnType() != Void.TYPE)
+                throw Context.reportRuntimeError1("msg.setter.return",
+                                                  setter.toString());
+
+            setterBox = new MemberBox(setter);
+
+            boolean delegatedForm;
+            if (!Modifier.isStatic(setter.getModifiers())) {
+                delegatedForm = (delegateTo != null);
+                setterBox.delegateTo = delegateTo;
+            } else {
+                delegatedForm = true;
+                // Ignore delegateTo for static setter but store
+                // non-null delegateTo indicator.
+                setterBox.delegateTo = Void.TYPE;
+            }
+
+            String errorId = null;
+            Class[] parmTypes = setter.getParameterTypes();
+            if (parmTypes.length == 1) {
+                if (delegatedForm) {
+                    errorId = "msg.setter2.expected";
+                }
+            } else if (parmTypes.length == 2) {
+                Object argType = parmTypes[0];
+                // Allow ScriptableObject for compatibility
+                if (!(argType == ScriptRuntime.ScriptableClass ||
+                      argType == ScriptRuntime.ScriptableObjectClass))
+                {
+                    errorId = "msg.setter2.parms";
+                } else if (!delegatedForm) {
+                    errorId = "msg.setter1.parms";
+                }
+            } else {
+                errorId = "msg.setter.parms";
+            }
+            if (errorId != null) {
+                throw Context.reportRuntimeError1(errorId, setter.toString());
+            }
+        }
+
+        GetterSlot gslot = (GetterSlot)getSlot(propertyName, 0,
+                                               SLOT_MODIFY_GETTER_SETTER);
+        gslot.setAttributes(attributes);
+        gslot.getter = getterBox;
+        gslot.setter = setterBox;
+    }
+
+    /**
+     * Search for names in a class, adding the resulting methods
+     * as properties.
+     *
+     * <p> Uses reflection to find the methods of the given names. Then
+     * FunctionObjects are constructed from the methods found, and
+     * are added to this object as properties with the given names.
+     *
+     * @param names the names of the Methods to add as function properties
+     * @param clazz the class to search for the Methods
+     * @param attributes the attributes of the new properties
+     * @see org.mozilla.javascript.FunctionObject
+     */
+    public void defineFunctionProperties(String[] names, Class clazz,
+                                         int attributes)
+    {
+        Method[] methods = FunctionObject.getMethodList(clazz);
+        for (int i=0; i < names.length; i++) {
+            String name = names[i];
+            Method m = FunctionObject.findSingleMethod(methods, name);
+            if (m == null) {
+                throw Context.reportRuntimeError2(
+                    "msg.method.not.found", name, clazz.getName());
+            }
+            FunctionObject f = new FunctionObject(name, m, this);
+            defineProperty(name, f, attributes);
+        }
+    }
+
+    /**
+     * Get the Object.prototype property.
+     * See ECMA 15.2.4.
+     */
+    public static Scriptable getObjectPrototype(Scriptable scope) {
+        return getClassPrototype(scope, "Object");
+    }
+
+    /**
+     * Get the Function.prototype property.
+     * See ECMA 15.3.4.
+     */
+    public static Scriptable getFunctionPrototype(Scriptable scope) {
+        return getClassPrototype(scope, "Function");
+    }
+
+    /**
+     * Get the prototype for the named class.
+     *
+     * For example, <code>getClassPrototype(s, "Date")</code> will first
+     * walk up the parent chain to find the outermost scope, then will
+     * search that scope for the Date constructor, and then will
+     * return Date.prototype. If any of the lookups fail, or
+     * the prototype is not a JavaScript object, then null will
+     * be returned.
+     *
+     * @param scope an object in the scope chain
+     * @param className the name of the constructor
+     * @return the prototype for the named class, or null if it
+     *         cannot be found.
+     */
+    public static Scriptable getClassPrototype(Scriptable scope,
+                                               String className)
+    {
+        scope = getTopLevelScope(scope);
+        Object ctor = getProperty(scope, className);
+        Object proto;
+        if (ctor instanceof BaseFunction) {
+            proto = ((BaseFunction)ctor).getPrototypeProperty();
+        } else if (ctor instanceof Scriptable) {
+            Scriptable ctorObj = (Scriptable)ctor;
+            proto = ctorObj.get("prototype", ctorObj);
+        } else {
+            return null;
+        }
+        if (proto instanceof Scriptable) {
+            return (Scriptable)proto;
+        }
+        return null;
+    }
+
+    /**
+     * Get the global scope.
+     *
+     * <p>Walks the parent scope chain to find an object with a null
+     * parent scope (the global object).
+     *
+     * @param obj a JavaScript object
+     * @return the corresponding global scope
+     */
+    public static Scriptable getTopLevelScope(Scriptable obj)
+    {
+        for (;;) {
+            Scriptable parent = obj.getParentScope();
+            if (parent == null) {
+                return obj;
+            }
+            obj = parent;
+        }
+    }
+
+    // APPJET
+    public static Scriptable getVeryTopLevelScope(Scriptable obj) {
+        return ScriptRuntime.getLibraryScopeOrNull(obj);
+    }
+    
+    /**
+     * Seal this object.
+     *
+     * A sealed object may not have properties added or removed. Once
+     * an object is sealed it may not be unsealed.
+     *
+     * @since 1.4R3
+     */
+    public synchronized void sealObject() {
+        if (count >= 0) {
+            count = ~count;
+        }
+    }
+
+    /**
+     * Return true if this object is sealed.
+     *
+     * It is an error to attempt to add or remove properties to
+     * a sealed object.
+     *
+     * @return true if sealed, false otherwise.
+     * @since 1.4R3
+     */
+    public final boolean isSealed() {
+        return count < 0;
+    }
+
+    private void checkNotSealed(String name, int index)
+    {
+        if (!isSealed())
+            return;
+
+        String str = (name != null) ? name : Integer.toString(index);
+        throw Context.reportRuntimeError1("msg.modify.sealed", str);
+    }
+
+    /**
+     * Gets a named property from an object or any object in its prototype chain.
+     * <p>
+     * Searches the prototype chain for a property named <code>name</code>.
+     * <p>
+     * @param obj a JavaScript object
+     * @param name a property name
+     * @return the value of a property with name <code>name</code> found in
+     *         <code>obj</code> or any object in its prototype chain, or
+     *         <code>Scriptable.NOT_FOUND</code> if not found
+     * @since 1.5R2
+     */
+    public static Object getProperty(Scriptable obj, String name)
+    {
+        Scriptable start = obj;
+        Object result;
+        do {
+            result = obj.get(name, start);
+            if (result != Scriptable.NOT_FOUND)
+                break;
+            obj = obj.getPrototype();
+        } while (obj != null);
+        return result;
+    }
+
+    /**
+     * Gets an indexed property from an object or any object in its prototype chain.
+     * <p>
+     * Searches the prototype chain for a property with integral index
+     * <code>index</code>. Note that if you wish to look for properties with numerical
+     * but non-integral indicies, you should use getProperty(Scriptable,String) with
+     * the string value of the index.
+     * <p>
+     * @param obj a JavaScript object
+     * @param index an integral index
+     * @return the value of a property with index <code>index</code> found in
+     *         <code>obj</code> or any object in its prototype chain, or
+     *         <code>Scriptable.NOT_FOUND</code> if not found
+     * @since 1.5R2
+     */
+    public static Object getProperty(Scriptable obj, int index)
+    {
+        Scriptable start = obj;
+        Object result;
+        do {
+            result = obj.get(index, start);
+            if (result != Scriptable.NOT_FOUND)
+                break;
+            obj = obj.getPrototype();
+        } while (obj != null);
+        return result;
+    }
+
+    /**
+     * Returns whether a named property is defined in an object or any object
+     * in its prototype chain.
+     * <p>
+     * Searches the prototype chain for a property named <code>name</code>.
+     * <p>
+     * @param obj a JavaScript object
+     * @param name a property name
+     * @return the true if property was found
+     * @since 1.5R2
+     */
+    public static boolean hasProperty(Scriptable obj, String name)
+    {
+        return null != getBase(obj, name);
+    }
+
+    /**
+     * If hasProperty(obj, name) would return true, then if the property that
+     * was found is compatible with the new property, this method just returns.
+     * If the property is not compatible, then an exception is thrown.
+     *
+     * A property redefinition is incompatible if the first definition was a
+     * const declaration or if this one is.  They are compatible only if neither
+     * was const.
+     */
+    public static void redefineProperty(Scriptable obj, String name,
+                                        boolean isConst)
+    {
+        Scriptable base = getBase(obj, name);
+        if (base == null)
+            return;
+        if (base instanceof ConstProperties) {
+            ConstProperties cp = (ConstProperties)base;
+
+            if (cp.isConst(name))
+                throw Context.reportRuntimeError1("msg.const.redecl", name);
+        }
+        if (isConst)
+            throw Context.reportRuntimeError1("msg.var.redecl", name);
+    }
+    /**
+     * Returns whether an indexed property is defined in an object or any object
+     * in its prototype chain.
+     * <p>
+     * Searches the prototype chain for a property with index <code>index</code>.
+     * <p>
+     * @param obj a JavaScript object
+     * @param index a property index
+     * @return the true if property was found
+     * @since 1.5R2
+     */
+    public static boolean hasProperty(Scriptable obj, int index)
+    {
+        return null != getBase(obj, index);
+    }
+
+    /**
+     * Puts a named property in an object or in an object in its prototype chain.
+     * <p>
+     * Searches for the named property in the prototype chain. If it is found,
+     * the value of the property in <code>obj</code> is changed through a call
+     * to {@link Scriptable#put(String, Scriptable, Object)} on the
+     * prototype passing <code>obj</code> as the <code>start</code> argument.
+     * This allows the prototype to veto the property setting in case the
+     * prototype defines the property with [[ReadOnly]] attribute. If the
+     * property is not found, it is added in <code>obj</code>.
+     * @param obj a JavaScript object
+     * @param name a property name
+     * @param value any JavaScript value accepted by Scriptable.put
+     * @since 1.5R2
+     */
+    public static void putProperty(Scriptable obj, String name, Object value)
+    {
+        Scriptable base = getBase(obj, name);
+        if (base == null)
+            base = obj;
+        base.put(name, obj, value);
+    }
+
+    /**
+     * Puts a named property in an object or in an object in its prototype chain.
+     * <p>
+     * Searches for the named property in the prototype chain. If it is found,
+     * the value of the property in <code>obj</code> is changed through a call
+     * to {@link Scriptable#put(String, Scriptable, Object)} on the
+     * prototype passing <code>obj</code> as the <code>start</code> argument.
+     * This allows the prototype to veto the property setting in case the
+     * prototype defines the property with [[ReadOnly]] attribute. If the
+     * property is not found, it is added in <code>obj</code>.
+     * @param obj a JavaScript object
+     * @param name a property name
+     * @param value any JavaScript value accepted by Scriptable.put
+     * @since 1.5R2
+     */
+    public static void putConstProperty(Scriptable obj, String name, Object value)
+    {
+        Scriptable base = getBase(obj, name);
+        if (base == null)
+            base = obj;
+        if (base instanceof ConstProperties)
+            ((ConstProperties)base).putConst(name, obj, value);
+    }
+
+    /**
+     * Puts an indexed property in an object or in an object in its prototype chain.
+     * <p>
+     * Searches for the indexed property in the prototype chain. If it is found,
+     * the value of the property in <code>obj</code> is changed through a call
+     * to {@link Scriptable#put(int, Scriptable, Object)} on the prototype
+     * passing <code>obj</code> as the <code>start</code> argument. This allows
+     * the prototype to veto the property setting in case the prototype defines
+     * the property with [[ReadOnly]] attribute. If the property is not found, 
+     * it is added in <code>obj</code>.
+     * @param obj a JavaScript object
+     * @param index a property index
+     * @param value any JavaScript value accepted by Scriptable.put
+     * @since 1.5R2
+     */
+    public static void putProperty(Scriptable obj, int index, Object value)
+    {
+        Scriptable base = getBase(obj, index);
+        if (base == null)
+            base = obj;
+        base.put(index, obj, value);
+    }
+
+    /**
+     * Removes the property from an object or its prototype chain.
+     * <p>
+     * Searches for a property with <code>name</code> in obj or
+     * its prototype chain. If it is found, the object's delete
+     * method is called.
+     * @param obj a JavaScript object
+     * @param name a property name
+     * @return true if the property doesn't exist or was successfully removed
+     * @since 1.5R2
+     */
+    public static boolean deleteProperty(Scriptable obj, String name)
+    {
+        Scriptable base = getBase(obj, name);
+        if (base == null)
+            return true;
+        base.delete(name);
+        return !base.has(name, obj);
+    }
+
+    /**
+     * Removes the property from an object or its prototype chain.
+     * <p>
+     * Searches for a property with <code>index</code> in obj or
+     * its prototype chain. If it is found, the object's delete
+     * method is called.
+     * @param obj a JavaScript object
+     * @param index a property index
+     * @return true if the property doesn't exist or was successfully removed
+     * @since 1.5R2
+     */
+    public static boolean deleteProperty(Scriptable obj, int index)
+    {
+        Scriptable base = getBase(obj, index);
+        if (base == null)
+            return true;
+        base.delete(index);
+        return !base.has(index, obj);
+    }
+
+    /**
+     * Returns an array of all ids from an object and its prototypes.
+     * <p>
+     * @param obj a JavaScript object
+     * @return an array of all ids from all object in the prototype chain.
+     *         If a given id occurs multiple times in the prototype chain,
+     *         it will occur only once in this list.
+     * @since 1.5R2
+     */
+    public static Object[] getPropertyIds(Scriptable obj)
+    {
+        if (obj == null) {
+            return ScriptRuntime.emptyArgs;
+        }
+        Object[] result = obj.getIds();
+        ObjToIntMap map = null;
+        for (;;) {
+            obj = obj.getPrototype();
+            if (obj == null) {
+                break;
+            }
+            Object[] ids = obj.getIds();
+            if (ids.length == 0) {
+                continue;
+            }
+            if (map == null) {
+                if (result.length == 0) {
+                    result = ids;
+                    continue;
+                }
+                map = new ObjToIntMap(result.length + ids.length);
+                for (int i = 0; i != result.length; ++i) {
+                    map.intern(result[i]);
+                }
+                result = null; // Allow to GC the result
+            }
+            for (int i = 0; i != ids.length; ++i) {
+                map.intern(ids[i]);
+            }
+        }
+        if (map != null) {
+            result = map.getKeys();
+        }
+        return result;
+    }
+
+    /**
+     * Call a method of an object.
+     * @param obj the JavaScript object
+     * @param methodName the name of the function property
+     * @param args the arguments for the call
+     *
+     * @see Context#getCurrentContext()
+     */
+    public static Object callMethod(Scriptable obj, String methodName,
+                                    Object[] args)
+    {
+        return callMethod(null, obj, methodName, args);
+    }
+
+    /**
+     * Call a method of an object.
+     * @param cx the Context object associated with the current thread.
+     * @param obj the JavaScript object
+     * @param methodName the name of the function property
+     * @param args the arguments for the call
+     */
+    public static Object callMethod(Context cx, Scriptable obj,
+                                    String methodName,
+                                    Object[] args)
+    {
+        Object funObj = getProperty(obj, methodName);
+        if (!(funObj instanceof Function)) {
+            throw ScriptRuntime.notFunctionError(obj, methodName);
+        }
+        Function fun = (Function)funObj;
+        // XXX: What should be the scope when calling funObj?
+        // The following favor scope stored in the object on the assumption
+        // that is more useful especially under dynamic scope setup.
+        // An alternative is to check for dynamic scope flag
+        // and use ScriptableObject.getTopLevelScope(fun) if the flag is not
+        // set. But that require access to Context and messy code
+        // so for now it is not checked.
+        Scriptable scope = ScriptableObject.getTopLevelScope(obj);
+        if (cx != null) {
+            return fun.call(cx, scope, obj, args);
+        } else {
+            return Context.call(null, fun, scope, obj, args);
+        }
+    }
+
+    private static Scriptable getBase(Scriptable obj, String name)
+    {
+        do {
+            if (obj.has(name, obj))
+                break;
+            obj = obj.getPrototype();
+        } while(obj != null);
+        return obj;
+    }
+
+    private static Scriptable getBase(Scriptable obj, int index)
+    {
+        do {
+            if (obj.has(index, obj))
+                break;
+            obj = obj.getPrototype();
+        } while(obj != null);
+        return obj;
+    }
+
+    /**
+     * Get arbitrary application-specific value associated with this object.
+     * @param key key object to select particular value.
+     * @see #associateValue(Object key, Object value)
+     */
+    public final Object getAssociatedValue(Object key)
+    {
+        Hashtable h = associatedValues;
+        if (h == null)
+            return null;
+        return h.get(key);
+    }
+
+    /**
+     * Get arbitrary application-specific value associated with the top scope
+     * of the given scope.
+     * The method first calls {@link #getTopLevelScope(Scriptable scope)}
+     * and then searches the prototype chain of the top scope for the first
+     * object containing the associated value with the given key.
+     *
+     * @param scope the starting scope.
+     * @param key key object to select particular value.
+     * @see #getAssociatedValue(Object key)
+     */
+    public static Object getTopScopeValue(Scriptable scope, Object key)
+    {
+        scope = ScriptableObject.getTopLevelScope(scope);
+        for (;;) {
+            if (scope instanceof ScriptableObject) {
+                ScriptableObject so = (ScriptableObject)scope;
+                Object value = so.getAssociatedValue(key);
+                if (value != null) {
+                    return value;
+                }
+            }
+            scope = scope.getPrototype();
+            if (scope == null) {
+                return null;
+            }
+        }
+    }
+
+    /**
+     * Associate arbitrary application-specific value with this object.
+     * Value can only be associated with the given object and key only once.
+     * The method ignores any subsequent attempts to change the already
+     * associated value.
+     * <p> The associated values are not serialized.
+     * @param key key object to select particular value.
+     * @param value the value to associate
+     * @return the passed value if the method is called first time for the
+     * given key or old value for any subsequent calls.
+     * @see #getAssociatedValue(Object key)
+     */
+    public final Object associateValue(Object key, Object value)
+    {
+        if (value == null) throw new IllegalArgumentException();
+        Hashtable h = associatedValues;
+        if (h == null) {
+            synchronized (this) {
+                h = associatedValues;
+                if (h == null) {
+                    h = new Hashtable();
+                    associatedValues = h;
+                }
+            }
+        }
+        return Kit.initHash(h, key, value);
+    }
+
+    private Object getImpl(String name, int index, Scriptable start)
+    {
+        Slot slot = getSlot(name, index, SLOT_QUERY);
+        if (slot == null) {
+            return Scriptable.NOT_FOUND;
+        }
+        if (!(slot instanceof GetterSlot)) {
+            return slot.value;
+        }
+        Object getterObj = ((GetterSlot)slot).getter;
+        if (getterObj != null) {
+            if (getterObj instanceof MemberBox) {
+                MemberBox nativeGetter = (MemberBox)getterObj;
+                Object getterThis;
+                Object[] args;
+                if (nativeGetter.delegateTo == null) {
+                    getterThis = start;
+                    args = ScriptRuntime.emptyArgs;
+                } else {
+                    getterThis = nativeGetter.delegateTo;
+                    args = new Object[] { start };
+                }
+                return nativeGetter.invoke(getterThis, args);
+            } else {
+                Function f = (Function)getterObj;
+                Context cx = Context.getContext();
+                return f.call(cx, f.getParentScope(), start,
+                              ScriptRuntime.emptyArgs);
+            }
+        }
+        Object value = slot.value;
+        if (value instanceof LazilyLoadedCtor) {
+            LazilyLoadedCtor initializer = (LazilyLoadedCtor)value;
+            try {
+                initializer.init();
+            } finally {
+                value = initializer.getValue();
+                slot.value = value;
+            }
+        }
+        return value;
+    }
+
+    /**
+     *
+     * @param name
+     * @param index
+     * @param start
+     * @param value
+     * @param constFlag EMPTY means normal put.  UNINITIALIZED_CONST means
+     * defineConstProperty.  READONLY means const initialization expression.
+     * @return false if this != start and no slot was found.  true if this == start
+     * or this != start and a READONLY slot was found.
+     */
+    private boolean putImpl(String name, int index, Scriptable start,
+                            Object value, int constFlag)
+    {
+        Slot slot;
+        if (this != start) {
+            slot = getSlot(name, index, SLOT_QUERY);
+            if (slot == null) {
+                return false;
+            }
+        } else {
+            checkNotSealed(name, index);
+            // either const hoisted declaration or initialization
+            if (constFlag != EMPTY) {
+                slot = getSlot(name, index, SLOT_MODIFY_CONST);
+                int attr = slot.getAttributes();
+                if ((attr & READONLY) == 0)
+                    throw Context.reportRuntimeError1("msg.var.redecl", name);
+                if ((attr & UNINITIALIZED_CONST) != 0) {
+                    slot.value = value;
+                    // clear the bit on const initialization
+                    if (constFlag != UNINITIALIZED_CONST)
+                        slot.setAttributes(attr & ~UNINITIALIZED_CONST);
+                }
+                return true;
+            }
+            slot = getSlot(name, index, SLOT_MODIFY);
+        }
+        if ((slot.getAttributes() & READONLY) != 0)
+            return true;
+        if (slot instanceof GetterSlot) {
+            Object setterObj = ((GetterSlot)slot).setter;
+            if (setterObj != null) {
+                Context cx = Context.getContext();
+                if (setterObj instanceof MemberBox) {
+                    MemberBox nativeSetter = (MemberBox)setterObj;
+                    Class pTypes[] = nativeSetter.argTypes;
+                    // XXX: cache tag since it is already calculated in
+                    // defineProperty ?
+                    Class valueType = pTypes[pTypes.length - 1];
+                    int tag = FunctionObject.getTypeTag(valueType);
+                    Object actualArg = FunctionObject.convertArg(cx, start,
+                                                                 value, tag);
+                    Object setterThis;
+                    Object[] args;
+                    if (nativeSetter.delegateTo == null) {
+                        setterThis = start;
+                        args = new Object[] { actualArg };
+                    } else {
+                        setterThis = nativeSetter.delegateTo;
+                        args = new Object[] { start, actualArg };
+                    }
+                    nativeSetter.invoke(setterThis, args);
+                } else {
+                    Function f = (Function)setterObj;
+                    f.call(cx, f.getParentScope(), start,
+                           new Object[] { value });
+                }
+                return true;
+            }
+        }
+        if (this == start) {
+            slot.value = value;
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    private Slot findAttributeSlot(String name, int index, int accessType)
+    {
+        Slot slot = getSlot(name, index, accessType);
+        if (slot == null) {
+            String str = (name != null ? name : Integer.toString(index));
+            throw Context.reportRuntimeError1("msg.prop.not.found", str);
+        }
+        return slot;
+    }
+
+    /**
+     * Locate the slot with given name or index.
+     *
+     * @param name property name or null if slot holds spare array index.
+     * @param index index or 0 if slot holds property name.
+     */
+    private Slot getSlot(String name, int index, int accessType)
+    {
+        Slot slot;
+
+        // Query last access cache and check that it was not deleted.
+      lastAccessCheck:
+        {
+            slot = lastAccess;
+            if (name != null) {
+                if (name != slot.name)
+                    break lastAccessCheck;
+                // No String.equals here as successful slot search update
+                // name object with fresh reference of the same string.
+            } else {
+                if (slot.name != null || index != slot.indexOrHash)
+                    break lastAccessCheck;
+            }
+
+            if (slot.wasDeleted != 0)
+                break lastAccessCheck;
+
+            if (accessType == SLOT_MODIFY_GETTER_SETTER &&
+                !(slot instanceof GetterSlot))
+                break lastAccessCheck;
+
+            return slot;
+        }
+
+        slot = accessSlot(name, index, accessType);
+        if (slot != null) {
+            // Update the cache
+            lastAccess = slot;
+        }
+        return slot;
+    }
+
+    private Slot accessSlot(String name, int index, int accessType)
+    {
+        int indexOrHash = (name != null ? name.hashCode() : index);
+
+        if (accessType == SLOT_QUERY ||
+            accessType == SLOT_MODIFY ||
+            accessType == SLOT_MODIFY_CONST ||
+            accessType == SLOT_MODIFY_GETTER_SETTER)
+        {
+            // Check the hashtable without using synchronization
+
+            Slot[] slotsLocalRef = slots; // Get stable local reference
+            if (slotsLocalRef == null) {
+                if (accessType == SLOT_QUERY)
+                    return null;
+            } else {
+                int tableSize = slotsLocalRef.length;
+                int slotIndex = getSlotIndex(tableSize, indexOrHash);
+                Slot slot = slotsLocalRef[slotIndex];
+                while (slot != null) {
+                    String sname = slot.name;
+                    if (sname != null) {
+                        if (sname == name)
+                            break;
+                        if (name != null && indexOrHash == slot.indexOrHash) {
+                            if (name.equals(sname)) {
+                                // This will avoid calling String.equals when
+                                // slot is accessed with same string object
+                                // next time.
+                                slot.name = name;
+                                break;
+                            }
+                        }
+                    } else if (name == null &&
+                               indexOrHash == slot.indexOrHash) {
+                        break;
+                    }
+                    slot = slot.next;
+                }
+                if (accessType == SLOT_QUERY) {
+                    return slot;
+                } else if (accessType == SLOT_MODIFY) {
+                    if (slot != null)
+                        return slot;
+                } else if (accessType == SLOT_MODIFY_GETTER_SETTER) {
+                    if (slot instanceof GetterSlot)
+                        return slot;
+                } else if (accessType == SLOT_MODIFY_CONST) {
+                    if (slot != null)
+                        return slot;
+                }
+            }
+
+            // A new slot has to be inserted or the old has to be replaced
+            // by GetterSlot. Time to synchronize.
+
+            synchronized (this) {
+                // Refresh local ref if another thread triggered grow
+                slotsLocalRef = slots;
+                int insertPos;
+                if (count == 0) {
+                    // Always throw away old slots if any on empty insert
+                    slotsLocalRef = new Slot[5];
+                    slots = slotsLocalRef;
+                    insertPos = getSlotIndex(slotsLocalRef.length, indexOrHash);
+                } else {
+                    int tableSize = slotsLocalRef.length;
+                    insertPos = getSlotIndex(tableSize, indexOrHash);
+                    Slot prev = slotsLocalRef[insertPos];
+                    Slot slot = prev;
+                    while (slot != null) {
+                        if (slot.indexOrHash == indexOrHash &&
+                            (slot.name == name ||
+                             (name != null && name.equals(slot.name))))
+                        {
+                            break;
+                        }
+                        prev = slot;
+                        slot = slot.next;
+                    }
+
+                    if (slot != null) {
+                        // Another thread just added a slot with same
+                        // name/index before this one entered synchronized
+                        // block. This is a race in application code and
+                        // probably indicates bug there. But for the hashtable
+                        // implementation it is harmless with the only
+                        // complication is the need to replace the added slot
+                        // if we need GetterSlot and the old one is not.
+                        if (accessType == SLOT_MODIFY_GETTER_SETTER &&
+                            !(slot instanceof GetterSlot))
+                        {
+                            GetterSlot newSlot = new GetterSlot(name, indexOrHash,
+                                    slot.getAttributes());
+                            newSlot.value = slot.value;
+                            newSlot.next = slot.next;
+                            if (prev == slot) {
+                                slotsLocalRef[insertPos] = newSlot;
+                            } else {
+                                prev.next = newSlot;
+                            }
+                            slot.wasDeleted = (byte)1;
+                            if (slot == lastAccess) {
+                                lastAccess = REMOVED;
+                            }
+                            slot = newSlot;
+                        } else if (accessType == SLOT_MODIFY_CONST) {
+                            return null;
+                        }
+                        return slot;
+                    }
+
+                    // Check if the table is not too full before inserting.
+                    if (4 * (count + 1) > 3 * slotsLocalRef.length) {
+                        slotsLocalRef = new Slot[slotsLocalRef.length * 2 + 1];
+                        copyTable(slots, slotsLocalRef, count);
+                        slots = slotsLocalRef;
+                        insertPos = getSlotIndex(slotsLocalRef.length,
+                                indexOrHash);
+                    }
+                }
+
+                Slot newSlot = (accessType == SLOT_MODIFY_GETTER_SETTER
+                                ? new GetterSlot(name, indexOrHash, 0)
+                                : new Slot(name, indexOrHash, 0));
+                if (accessType == SLOT_MODIFY_CONST)
+                    newSlot.setAttributes(CONST);
+                ++count;
+                addKnownAbsentSlot(slotsLocalRef, newSlot, insertPos);
+                return newSlot;
+            }
+
+        } else if (accessType == SLOT_REMOVE) {
+            synchronized (this) {
+                Slot[] slotsLocalRef = slots;
+                if (count != 0) {
+                    int tableSize = slots.length;
+                    int slotIndex = getSlotIndex(tableSize, indexOrHash);
+                    Slot prev = slotsLocalRef[slotIndex];
+                    Slot slot = prev;
+                    while (slot != null) {
+                        if (slot.indexOrHash == indexOrHash &&
+                            (slot.name == name ||
+                             (name != null && name.equals(slot.name))))
+                        {
+                            break;
+                        }
+                        prev = slot;
+                        slot = slot.next;
+                    }
+                    if (slot != null && (slot.getAttributes() & PERMANENT) == 0) {
+                        count--;
+                        if (prev == slot) {
+                            slotsLocalRef[slotIndex] = slot.next;
+                        } else {
+                            prev.next = slot.next;
+                        }
+                        // Mark the slot as removed to handle a case when
+                        // another thread manages to put just removed slot
+                        // into lastAccess cache.
+                        slot.wasDeleted = (byte)1;
+                        if (slot == lastAccess) {
+                            lastAccess = REMOVED;
+                        }
+                    }
+                }
+            }
+            return null;
+
+        } else {
+            throw Kit.codeBug();
+        }
+    }
+
+    private static int getSlotIndex(int tableSize, int indexOrHash)
+    {
+        return (indexOrHash & 0x7fffffff) % tableSize;
+    }
+
+    // Must be inside synchronized (this)
+    private static void copyTable(Slot[] slots, Slot[] newSlots, int count)
+    {
+        if (count == 0) throw Kit.codeBug();
+
+        int tableSize = newSlots.length;
+        int i = slots.length;
+        for (;;) {
+            --i;
+            Slot slot = slots[i];
+            while (slot != null) {
+                int insertPos = getSlotIndex(tableSize, slot.indexOrHash);
+                Slot next = slot.next;
+                addKnownAbsentSlot(newSlots, slot, insertPos);
+                slot.next = null;
+                slot = next;
+                if (--count == 0)
+                    return;
+            }
+        }
+    }
+
+    /**
+     * Add slot with keys that are known to absent from the table.
+     * This is an optimization to use when inserting into empty table,
+     * after table growth or during deserialization.
+     */
+    private static void addKnownAbsentSlot(Slot[] slots, Slot slot, int insertPos)
+    {
+        if (slots[insertPos] == null) {
+            slots[insertPos] = slot;
+        } else {
+            Slot prev = slots[insertPos];
+            while (prev.next != null) {
+                prev = prev.next;
+            }
+            prev.next = slot;
+        }
+    }
+
+    Object[] getIds(boolean getAll) {
+        Slot[] s = slots;
+        Object[] a = ScriptRuntime.emptyArgs;
+        if (s == null)
+            return a;
+        int c = 0;
+        for (int i=0; i < s.length; i++) {
+            Slot slot = s[i];
+            while (slot != null) {
+                if (getAll || (slot.getAttributes() & DONTENUM) == 0) {
+                    if (c == 0)
+                        a = new Object[s.length];
+                    a[c++] = (slot.name != null ? (Object) slot.name
+                              : new Integer(slot.indexOrHash));
+                }
+                slot = slot.next;
+            }
+        }
+        if (c == a.length)
+            return a;
+        Object[] result = new Object[c];
+        System.arraycopy(a, 0, result, 0, c);
+        return result;
+    }
+
+    private synchronized void writeObject(ObjectOutputStream out)
+        throws IOException
+    {
+        out.defaultWriteObject();
+        int objectsCount = count;
+        if (objectsCount < 0) {
+            // "this" was sealed
+            objectsCount = ~objectsCount;
+        }
+        if (objectsCount == 0) {
+            out.writeInt(0);
+        } else {
+            out.writeInt(slots.length);
+            for (int i = 0; i < slots.length; ++i) {
+                Slot slot = slots[i];
+                while (slot != null) {
+                    out.writeObject(slot);
+                    slot = slot.next;
+                    if (--objectsCount == 0)
+                        return;
+                }
+            }
+        }
+    }
+
+    private void readObject(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        in.defaultReadObject();
+        lastAccess = REMOVED;
+
+        int tableSize = in.readInt();
+        if (tableSize != 0) {
+            slots = new Slot[tableSize];
+            int objectsCount = count;
+            if (objectsCount < 0) {
+                // "this" was sealed
+                objectsCount = ~objectsCount;
+            }
+            for (int i = 0; i != objectsCount; ++i) {
+                Slot slot = (Slot)in.readObject();
+                int slotIndex = getSlotIndex(tableSize, slot.indexOrHash);
+                addKnownAbsentSlot(slots, slot, slotIndex);
+            }
+        }
+    }
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecureCaller.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecureCaller.java
new file mode 100644
index 0000000..bc8ed86
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecureCaller.java
@@ -0,0 +1,198 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.ref.SoftReference;
+import java.lang.reflect.UndeclaredThrowableException;
+import java.net.URL;
+import java.security.AccessController;
+import java.security.CodeSource;
+import java.security.PrivilegedAction;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+import java.security.SecureClassLoader;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+/**
+ * @author Attila Szegedi
+ */
+public abstract class SecureCaller
+{
+    private static final byte[] secureCallerImplBytecode = loadBytecode();
+    
+    // We're storing a CodeSource -> (ClassLoader -> SecureRenderer), since we
+    // need to have one renderer per class loader. We're using weak hash maps
+    // and soft references all the way, since we don't want to interfere with
+    // cleanup of either CodeSource or ClassLoader objects.
+    private static final Map callers = new WeakHashMap();
+    
+    public abstract Object call(Callable callable, Context cx, 
+            Scriptable scope, Scriptable thisObj, Object[] args);
+    
+    /**
+     * Call the specified callable using a protection domain belonging to the 
+     * specified code source. 
+     */
+    static Object callSecurely(final CodeSource codeSource, Callable callable, 
+            Context cx, Scriptable scope, Scriptable thisObj, Object[] args)
+    {
+        final Thread thread = Thread.currentThread();
+        // Run in doPrivileged as we might be checked for "getClassLoader" 
+        // runtime permission
+        final ClassLoader classLoader = (ClassLoader)AccessController.doPrivileged(
+            new PrivilegedAction() {
+                public Object run() {
+                    return thread.getContextClassLoader();
+                }
+            });
+        Map classLoaderMap;
+        synchronized(callers)
+        {
+            classLoaderMap = (Map)callers.get(codeSource);
+            if(classLoaderMap == null)
+            {
+                classLoaderMap = new WeakHashMap();
+                callers.put(codeSource, classLoaderMap);
+            }
+        }
+        SecureCaller caller;
+        synchronized(classLoaderMap)
+        {
+            SoftReference ref = (SoftReference)classLoaderMap.get(classLoader);
+            if(ref != null)
+            {
+                caller = (SecureCaller)ref.get();
+            }
+            else
+            {
+                caller = null;
+            }
+            if(caller == null)
+            {
+                try
+                {
+                    // Run in doPrivileged as we'll be checked for 
+                    // "createClassLoader" runtime permission
+                    caller = (SecureCaller)AccessController.doPrivileged(
+                            new PrivilegedExceptionAction()
+                    {
+                        public Object run() throws Exception
+                        {
+                            ClassLoader effectiveClassLoader;
+                            Class thisClass = getClass();
+                            if(classLoader.loadClass(thisClass.getName()) != thisClass) {
+                                effectiveClassLoader = thisClass.getClassLoader();
+                            } else {
+                                effectiveClassLoader = classLoader;
+                            }  
+                            SecureClassLoaderImpl secCl = 
+                                new SecureClassLoaderImpl(effectiveClassLoader);
+                            Class c = secCl.defineAndLinkClass(
+                                    SecureCaller.class.getName() + "Impl", 
+                                    secureCallerImplBytecode, codeSource);
+                            return c.newInstance();
+                        }
+                    });
+                    classLoaderMap.put(classLoader, new SoftReference(caller));
+                }
+                catch(PrivilegedActionException ex)
+                {
+                    throw new UndeclaredThrowableException(ex.getCause());
+                }
+            }
+        }
+        return caller.call(callable, cx, scope, thisObj, args);
+    }
+    
+    private static class SecureClassLoaderImpl extends SecureClassLoader
+    {
+        SecureClassLoaderImpl(ClassLoader parent)
+        {
+            super(parent);
+        }
+        
+        Class defineAndLinkClass(String name, byte[] bytes, CodeSource cs)
+        {
+            Class cl = defineClass(name, bytes, 0, bytes.length, cs);
+            resolveClass(cl);
+            return cl;
+        }
+    }
+    
+    private static byte[] loadBytecode()
+    {
+        return (byte[])AccessController.doPrivileged(new PrivilegedAction()
+        {
+            public Object run()
+            {
+                return loadBytecodePrivileged();
+            }
+        });
+    }
+    
+    private static byte[] loadBytecodePrivileged()
+    {
+        URL url = SecureCaller.class.getResource("SecureCallerImpl.clazz");
+        try
+        {
+            InputStream in = url.openStream();
+            try
+            {
+                ByteArrayOutputStream bout = new ByteArrayOutputStream();
+                for(;;)
+                {
+                    int r = in.read();
+                    if(r == -1)
+                    {
+                        return bout.toByteArray();
+                    }
+                    bout.write(r);
+                }
+            }
+            finally
+            {
+                in.close();
+            }
+        }
+        catch(IOException e)
+        {
+            throw new UndeclaredThrowableException(e);
+        }
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecurityController.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecurityController.java
new file mode 100644
index 0000000..ed85dbf
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecurityController.java
@@ -0,0 +1,211 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * This class describes the support needed to implement security.
+ * <p>
+ * Three main pieces of functionality are required to implement
+ * security for JavaScript. First, it must be possible to define
+ * classes with an associated security domain. (This security
+ * domain may be any object incorporating notion of access
+ * restrictions that has meaning to an embedding; for a client-side
+ * JavaScript embedding this would typically be
+ * java.security.ProtectionDomain or similar object depending on an
+ * origin URL and/or a digital certificate.)
+ * Next it must be possible to get a security domain object that
+ * allows a particular action only if all security domains
+ * associated with code on the current Java stack allows it. And
+ * finally, it must be possible to execute script code with
+ * associated security domain injected into Java stack.
+ * <p>
+ * These three pieces of functionality are encapsulated in the
+ * SecurityController class.
+ *
+ * @see org.mozilla.javascript.Context#setSecurityController(SecurityController)
+ * @see java.lang.ClassLoader
+ * @since 1.5 Release 4
+ */
+public abstract class SecurityController
+{
+    private static SecurityController global;
+
+// The method must NOT be public or protected
+    static SecurityController global()
+    {
+        return global;
+    }
+
+    /**
+     * Check if global {@link SecurityController} was already installed.
+     * @see #initGlobal(SecurityController controller)
+     */
+    public static boolean hasGlobal()
+    {
+        return global != null;
+    }
+
+    /**
+     * Initialize global controller that will be used for all
+     * security-related operations. The global controller takes precedence
+     * over already installed {@link Context}-specific controllers and cause
+     * any subsequent call to
+     * {@link Context#setSecurityController(SecurityController)}
+     * to throw an exception.
+     * <p>
+     * The method can only be called once.
+     *
+     * @see #hasGlobal()
+     */
+    public static void initGlobal(SecurityController controller)
+    {
+        if (controller == null) throw new IllegalArgumentException();
+        if (global != null) {
+            throw new SecurityException("Cannot overwrite already installed global SecurityController");
+        }
+        global = controller;
+    }
+
+    /**
+     * Get class loader-like object that can be used
+     * to define classes with the given security context.
+     * @param parentLoader parent class loader to delegate search for classes
+     *        not defined by the class loader itself
+     * @param securityDomain some object specifying the security
+     *        context of the code that is defined by the returned class loader.
+     */
+    public abstract GeneratedClassLoader createClassLoader(
+        ClassLoader parentLoader, Object securityDomain);
+
+    /**
+     * Create {@link GeneratedClassLoader} with restrictions imposed by
+     * staticDomain and all current stack frames.
+     * The method uses the SecurityController instance associated with the
+     * current {@link Context} to construct proper dynamic domain and create
+     * corresponding class loader.
+     * <par>
+     * If no SecurityController is associated with the current {@link Context} ,
+     * the method calls {@link Context#createClassLoader(ClassLoader parent)}.
+     *
+     * @param parent parent class loader. If null,
+     *        {@link Context#getApplicationClassLoader()} will be used.
+     * @param staticDomain static security domain.
+     */
+    public static GeneratedClassLoader createLoader(
+        ClassLoader parent, Object staticDomain)
+    {
+        Context cx = Context.getContext();
+        if (parent == null) {
+            parent = cx.getApplicationClassLoader();
+        }
+        SecurityController sc = cx.getSecurityController();
+        GeneratedClassLoader loader;
+        if (sc == null) {
+            loader = cx.createClassLoader(parent);
+        } else {
+            Object dynamicDomain = sc.getDynamicSecurityDomain(staticDomain);
+            loader = sc.createClassLoader(parent, dynamicDomain);
+        }
+        return loader;
+    }
+
+    public static Class getStaticSecurityDomainClass() {
+        SecurityController sc = Context.getContext().getSecurityController();
+        return sc == null ? null : sc.getStaticSecurityDomainClassInternal(); 
+    }
+    
+    public Class getStaticSecurityDomainClassInternal()
+    {
+        return null;
+    }
+
+    /**
+     * Get dynamic security domain that allows an action only if it is allowed
+     * by the current Java stack and <i>securityDomain</i>. If
+     * <i>securityDomain</i> is null, return domain representing permissions
+     * allowed by the current stack.
+     */
+    public abstract Object getDynamicSecurityDomain(Object securityDomain);
+
+    /**
+     * Call {@link
+     * Callable#call(Context cx, Scriptable scope, Scriptable thisObj,
+     *               Object[] args)}
+     * of <i>callable</i> under restricted security domain where an action is
+     * allowed only if it is allowed according to the Java stack on the
+     * moment of the <i>execWithDomain</i> call and <i>securityDomain</i>.
+     * Any call to {@link #getDynamicSecurityDomain(Object)} during
+     * execution of <tt>callable.call(cx, scope, thisObj, args)</tt>
+     * should return a domain incorporate restrictions imposed by
+     * <i>securityDomain</i> and Java stack on the moment of callWithDomain
+     * invocation.
+     * <p>
+     * The method should always be overridden, it is not declared abstract
+     * for compatibility reasons.
+     */
+    public Object callWithDomain(Object securityDomain, Context cx,
+                                 final Callable callable, Scriptable scope,
+                                 final Scriptable thisObj, final Object[] args)
+    {
+        return execWithDomain(cx, scope, new Script()
+        {
+            public Object exec(Context cx, Scriptable scope)
+            {
+                return callable.call(cx, scope, thisObj, args);
+            }
+
+        }, securityDomain);
+    }
+
+    /**
+     * @deprecated The application should not override this method and instead
+     * override
+     * {@link #callWithDomain(Object securityDomain, Context cx, Callable callable, Scriptable scope, Scriptable thisObj, Object[] args)}.
+     */
+    public Object execWithDomain(Context cx, Scriptable scope,
+                                 Script script, Object securityDomain)
+    {
+        throw new IllegalStateException("callWithDomain should be overridden");
+    }
+
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecurityUtilities.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecurityUtilities.java
new file mode 100644
index 0000000..275ad92
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SecurityUtilities.java
@@ -0,0 +1,80 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.security.ProtectionDomain;
+
+/**
+ * @author Attila Szegedi
+ */
+public class SecurityUtilities
+{
+    /**
+     * Retrieves a system property within a privileged block. Use it only when
+     * the property is used from within Rhino code and is not passed out of it.
+     * @param name the name of the system property
+     * @return the value of the system property
+     */
+    public static String getSystemProperty(final String name)
+    {
+        return (String)AccessController.doPrivileged(
+            new PrivilegedAction()
+            {
+                public Object run()
+                {
+                    return System.getProperty(name);
+                }
+            });
+    }
+    
+    public static ProtectionDomain getProtectionDomain(final Class clazz)
+    {
+        return (ProtectionDomain)AccessController.doPrivileged(
+                new PrivilegedAction()
+                {
+                    public Object run()
+                    {
+                        return clazz.getProtectionDomain();
+                    }
+                });
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SpecialRef.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SpecialRef.java
new file mode 100644
index 0000000..b037eaf
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/SpecialRef.java
@@ -0,0 +1,151 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov, igor@fastmail.fm
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+class SpecialRef extends Ref
+{
+    static final long serialVersionUID = -7521596632456797847L;
+
+    private static final int SPECIAL_NONE = 0;
+    private static final int SPECIAL_PROTO = 1;
+    private static final int SPECIAL_PARENT = 2;
+
+    private Scriptable target;
+    private int type;
+    private String name;
+
+    private SpecialRef(Scriptable target, int type, String name)
+    {
+        this.target = target;
+        this.type = type;
+        this.name = name;
+    }
+
+    static Ref createSpecial(Context cx, Object object, String name)
+    {
+        Scriptable target = ScriptRuntime.toObjectOrNull(cx, object);
+        if (target == null) {
+            throw ScriptRuntime.undefReadError(object, name);
+        }
+
+        int type;
+        if (name.equals("__proto__")) {
+            type = SPECIAL_PROTO;
+        } else if (name.equals("__parent__")) {
+            type = SPECIAL_PARENT;
+        } else {
+            throw new IllegalArgumentException(name);
+        }
+
+        if (!cx.hasFeature(Context.FEATURE_PARENT_PROTO_PROPERTIES)) {
+            // Clear special after checking for valid name!
+            type = SPECIAL_NONE;
+        }
+
+        return new SpecialRef(target, type, name);
+    }
+
+    public Object get(Context cx)
+    {
+        switch (type) {
+          case SPECIAL_NONE:
+            return ScriptRuntime.getObjectProp(target, name, cx);
+          case SPECIAL_PROTO:
+            return target.getPrototype();
+          case SPECIAL_PARENT:
+            return target.getParentScope();
+          default:
+            throw Kit.codeBug();
+        }
+    }
+
+    public Object set(Context cx, Object value)
+    {
+        switch (type) {
+          case SPECIAL_NONE:
+            return ScriptRuntime.setObjectProp(target, name, value, cx);
+          case SPECIAL_PROTO:
+          case SPECIAL_PARENT:
+            {
+                Scriptable obj = ScriptRuntime.toObjectOrNull(cx, value);
+                if (obj != null) {
+                    // Check that obj does not contain on its prototype/scope
+                    // chain to prevent cycles
+                    Scriptable search = obj;
+                    do {
+                        if (search == target) {
+                            throw Context.reportRuntimeError1(
+                                "msg.cyclic.value", name);
+                        }
+                        if (type == SPECIAL_PROTO) {
+                            search = search.getPrototype();
+                        } else {
+                            search = search.getParentScope();
+                        }
+                    } while (search != null);
+                }
+                if (type == SPECIAL_PROTO) {
+                    target.setPrototype(obj);
+                } else {
+                    target.setParentScope(obj);
+                }
+                return obj;
+            }
+          default:
+            throw Kit.codeBug();
+        }
+    }
+
+    public boolean has(Context cx)
+    {
+        if (type == SPECIAL_NONE) {
+            return ScriptRuntime.hasObjectElem(target, name, cx);
+        }
+        return true;
+    }
+
+    public boolean delete(Context cx)
+    {
+        if (type == SPECIAL_NONE) {
+            return ScriptRuntime.deleteObjectElem(target, name, cx);
+        }
+        return false;
+    }
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Synchronizer.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Synchronizer.java
new file mode 100644
index 0000000..f2fca52
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Synchronizer.java
@@ -0,0 +1,81 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Delegator.java, released
+ * Sep 27, 2000.
+ *
+ * The Initial Developer of the Original Code is
+ * Matthias Radestock. <matthias@sorted.org>.
+ * Portions created by the Initial Developer are Copyright (C) 2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * This class provides support for implementing Java-style synchronized
+ * methods in Javascript.
+ *
+ * Synchronized functions are created from ordinary Javascript
+ * functions by the <code>Synchronizer</code> constructor, e.g.
+ * <code>new Packages.org.mozilla.javascript.Synchronizer(fun)</code>.
+ * The resulting object is a function that establishes an exclusive
+ * lock on the <code>this</code> object of its invocation.
+ *
+ * The Rhino shell provides a short-cut for the creation of
+ * synchronized methods: <code>sync(fun)</code> has the same effect as
+ * calling the above constructor.
+ *
+ * @see org.mozilla.javascript.Delegator
+ * @author Matthias Radestock
+ */
+
+public class Synchronizer extends Delegator {
+
+    /**
+     * Create a new synchronized function from an existing one.
+     *
+     * @param obj the existing function
+     */
+    public Synchronizer(Scriptable obj) {
+        super(obj);
+    }
+
+    /**
+     * @see org.mozilla.javascript.Function#call
+     */
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        synchronized(thisObj instanceof Wrapper ? ((Wrapper)thisObj).unwrap() : thisObj) {
+            return ((Function)obj).call(cx,scope,thisObj,args);
+        }
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Token.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Token.java
new file mode 100644
index 0000000..be96487
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Token.java
@@ -0,0 +1,436 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Roger Lawrence
+ *   Mike McCabe
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Milen Nankov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class implements the JavaScript scanner.
+ *
+ * It is based on the C source files jsscan.c and jsscan.h
+ * in the jsref package.
+ *
+ * @see org.mozilla.javascript.Parser
+ *
+ * @author Mike McCabe
+ * @author Brendan Eich
+ */
+
+public class Token
+{
+
+    // debug flags
+    public static final boolean printTrees =
+        /*APPJET: some info not generated with this off; we disable
+          actual printing in Interpreter and CodeGen */true;
+    static final boolean printICode = false;
+    static final boolean printNames = printTrees || printICode;
+
+    /**
+     * Token types.  These values correspond to JSTokenType values in
+     * jsscan.c.
+     */
+
+    public final static int
+    // start enum
+        ERROR          = -1, // well-known as the only code < EOF
+        EOF            = 0,  // end of file token - (not EOF_CHAR)
+        EOL            = 1,  // end of line
+
+        // Interpreter reuses the following as bytecodes
+        FIRST_BYTECODE_TOKEN    = 2,
+
+        ENTERWITH      = 2,
+        LEAVEWITH      = 3,
+        RETURN         = 4,
+        GOTO           = 5,
+        IFEQ           = 6,
+        IFNE           = 7,
+        SETNAME        = 8,
+        BITOR          = 9,
+        BITXOR         = 10,
+        BITAND         = 11,
+        EQ             = 12,
+        NE             = 13,
+        LT             = 14,
+        LE             = 15,
+        GT             = 16,
+        GE             = 17,
+        LSH            = 18,
+        RSH            = 19,
+        URSH           = 20,
+        ADD            = 21,
+        SUB            = 22,
+        MUL            = 23,
+        DIV            = 24,
+        MOD            = 25,
+        NOT            = 26,
+        BITNOT         = 27,
+        POS            = 28,
+        NEG            = 29,
+        NEW            = 30,
+        DELPROP        = 31,
+        TYPEOF         = 32,
+        GETPROP        = 33,
+        GETPROPNOWARN  = 34,
+        SETPROP        = 35,
+        GETELEM        = 36,
+        SETELEM        = 37,
+        CALL           = 38,
+        NAME           = 39,
+        NUMBER         = 40,
+        STRING         = 41,
+        NULL           = 42,
+        THIS           = 43,
+        FALSE          = 44,
+        TRUE           = 45,
+        SHEQ           = 46,   // shallow equality (===)
+        SHNE           = 47,   // shallow inequality (!==)
+        REGEXP         = 48,
+        BINDNAME       = 49,
+        THROW          = 50,
+        RETHROW        = 51, // rethrow caught exception: catch (e if ) use it
+        IN             = 52,
+        INSTANCEOF     = 53,
+        LOCAL_LOAD     = 54,
+        GETVAR         = 55,
+        SETVAR         = 56,
+        CATCH_SCOPE    = 57,
+        ENUM_INIT_KEYS = 58,
+        ENUM_INIT_VALUES = 59,
+        ENUM_INIT_ARRAY= 60,
+        ENUM_NEXT      = 61,
+        ENUM_ID        = 62,
+        THISFN         = 63,
+        RETURN_RESULT  = 64, // to return previously stored return result
+        ARRAYLIT       = 65, // array literal
+        OBJECTLIT      = 66, // object literal
+        GET_REF        = 67, // *reference
+        SET_REF        = 68, // *reference    = something
+        DEL_REF        = 69, // delete reference
+        REF_CALL       = 70, // f(args)    = something or f(args)++
+        REF_SPECIAL    = 71, // reference for special properties like __proto
+        YIELD          = 72,  // JS 1.7 yield pseudo keyword
+
+        // For XML support:
+        DEFAULTNAMESPACE = 73, // default xml namespace =
+        ESCXMLATTR     = 74,
+        ESCXMLTEXT     = 75,
+        REF_MEMBER     = 76, // Reference for x.@y, x..y etc.
+        REF_NS_MEMBER  = 77, // Reference for x.ns::y, x..ns::y etc.
+        REF_NAME       = 78, // Reference for @y, @[y] etc.
+        REF_NS_NAME    = 79; // Reference for ns::y, @ns::y@[y] etc.
+
+        // End of interpreter bytecodes
+    public final static int
+        LAST_BYTECODE_TOKEN    = REF_NS_NAME,
+
+        TRY            = 80,
+        SEMI           = 81,  // semicolon
+        LB             = 82,  // left and right brackets
+        RB             = 83,
+        LC             = 84,  // left and right curlies (braces)
+        RC             = 85,
+        LP             = 86,  // left and right parentheses
+        RP             = 87,
+        COMMA          = 88,  // comma operator
+
+        ASSIGN         = 89,  // simple assignment  (=)
+        ASSIGN_BITOR   = 90,  // |=
+        ASSIGN_BITXOR  = 91,  // ^=
+        ASSIGN_BITAND  = 92,  // |=
+        ASSIGN_LSH     = 93,  // <<=
+        ASSIGN_RSH     = 94,  // >>=
+        ASSIGN_URSH    = 95,  // >>>=
+        ASSIGN_ADD     = 96,  // +=
+        ASSIGN_SUB     = 97,  // -=
+        ASSIGN_MUL     = 98,  // *=
+        ASSIGN_DIV     = 99,  // /=
+        ASSIGN_MOD     = 100;  // %=
+
+    public final static int
+        FIRST_ASSIGN   = ASSIGN,
+        LAST_ASSIGN    = ASSIGN_MOD,
+
+        HOOK           = 101, // conditional (?:)
+        COLON          = 102,
+        OR             = 103, // logical or (||)
+        AND            = 104, // logical and (&&)
+        INC            = 105, // increment/decrement (++ --)
+        DEC            = 106,
+        DOT            = 107, // member operator (.)
+        FUNCTION       = 108, // function keyword
+        EXPORT         = 109, // export keyword
+        IMPORT         = 110, // import keyword
+        IF             = 111, // if keyword
+        ELSE           = 112, // else keyword
+        SWITCH         = 113, // switch keyword
+        CASE           = 114, // case keyword
+        DEFAULT        = 115, // default keyword
+        WHILE          = 116, // while keyword
+        DO             = 117, // do keyword
+        FOR            = 118, // for keyword
+        BREAK          = 119, // break keyword
+        CONTINUE       = 120, // continue keyword
+        VAR            = 121, // var keyword
+        WITH           = 122, // with keyword
+        CATCH          = 123, // catch keyword
+        FINALLY        = 124, // finally keyword
+        VOID           = 125, // void keyword
+        RESERVED       = 126, // reserved keywords
+
+        EMPTY          = 127,
+
+        /* types used for the parse tree - these never get returned
+         * by the scanner.
+         */
+
+        BLOCK          = 128, // statement block
+        LABEL          = 129, // label
+        TARGET         = 130,
+        LOOP           = 131,
+        EXPR_VOID      = 132, // expression statement in functions
+        EXPR_RESULT    = 133, // expression statement in scripts
+        JSR            = 134,
+        SCRIPT         = 135, // top-level node for entire script
+        TYPEOFNAME     = 136, // for typeof(simple-name)
+        USE_STACK      = 137,
+        SETPROP_OP     = 138, // x.y op= something
+        SETELEM_OP     = 139, // x[y] op= something
+        LOCAL_BLOCK    = 140,
+        SET_REF_OP     = 141, // *reference op= something
+
+        // For XML support:
+        DOTDOT         = 142,  // member operator (..)
+        COLONCOLON     = 143,  // namespace::name
+        XML            = 144,  // XML type
+        DOTQUERY       = 145,  // .() -- e.g., x.emps.emp.(name == "terry")
+        XMLATTR        = 146,  // @
+        XMLEND         = 147,
+
+        // Optimizer-only-tokens
+        TO_OBJECT      = 148,
+        TO_DOUBLE      = 149,
+
+        GET            = 150,  // JS 1.5 get pseudo keyword
+        SET            = 151,  // JS 1.5 set pseudo keyword
+        LET            = 152,  // JS 1.7 let pseudo keyword
+        CONST          = 153,
+        SETCONST       = 154,
+        SETCONSTVAR    = 155,
+        ARRAYCOMP      = 156,  // array comprehension
+        LETEXPR        = 157,
+        WITHEXPR       = 158,
+        DEBUGGER       = 159,
+        LAST_TOKEN     = 159;
+
+    public static String name(int token)
+    {
+        if (!printNames) {
+            return String.valueOf(token);
+        }
+        switch (token) {
+          case ERROR:           return "ERROR";
+          case EOF:             return "EOF";
+          case EOL:             return "EOL";
+          case ENTERWITH:       return "ENTERWITH";
+          case LEAVEWITH:       return "LEAVEWITH";
+          case RETURN:          return "RETURN";
+          case GOTO:            return "GOTO";
+          case IFEQ:            return "IFEQ";
+          case IFNE:            return "IFNE";
+          case SETNAME:         return "SETNAME";
+          case BITOR:           return "BITOR";
+          case BITXOR:          return "BITXOR";
+          case BITAND:          return "BITAND";
+          case EQ:              return "EQ";
+          case NE:              return "NE";
+          case LT:              return "LT";
+          case LE:              return "LE";
+          case GT:              return "GT";
+          case GE:              return "GE";
+          case LSH:             return "LSH";
+          case RSH:             return "RSH";
+          case URSH:            return "URSH";
+          case ADD:             return "ADD";
+          case SUB:             return "SUB";
+          case MUL:             return "MUL";
+          case DIV:             return "DIV";
+          case MOD:             return "MOD";
+          case NOT:             return "NOT";
+          case BITNOT:          return "BITNOT";
+          case POS:             return "POS";
+          case NEG:             return "NEG";
+          case NEW:             return "NEW";
+          case DELPROP:         return "DELPROP";
+          case TYPEOF:          return "TYPEOF";
+          case GETPROP:         return "GETPROP";
+          case GETPROPNOWARN:   return "GETPROPNOWARN";
+          case SETPROP:         return "SETPROP";
+          case GETELEM:         return "GETELEM";
+          case SETELEM:         return "SETELEM";
+          case CALL:            return "CALL";
+          case NAME:            return "NAME";
+          case NUMBER:          return "NUMBER";
+          case STRING:          return "STRING";
+          case NULL:            return "NULL";
+          case THIS:            return "THIS";
+          case FALSE:           return "FALSE";
+          case TRUE:            return "TRUE";
+          case SHEQ:            return "SHEQ";
+          case SHNE:            return "SHNE";
+          case REGEXP:          return "OBJECT";
+          case BINDNAME:        return "BINDNAME";
+          case THROW:           return "THROW";
+          case RETHROW:         return "RETHROW";
+          case IN:              return "IN";
+          case INSTANCEOF:      return "INSTANCEOF";
+          case LOCAL_LOAD:      return "LOCAL_LOAD";
+          case GETVAR:          return "GETVAR";
+          case SETVAR:          return "SETVAR";
+          case CATCH_SCOPE:     return "CATCH_SCOPE";
+          case ENUM_INIT_KEYS:  return "ENUM_INIT_KEYS";
+          case ENUM_INIT_VALUES:return "ENUM_INIT_VALUES";
+          case ENUM_INIT_ARRAY: return "ENUM_INIT_ARRAY";
+          case ENUM_NEXT:       return "ENUM_NEXT";
+          case ENUM_ID:         return "ENUM_ID";
+          case THISFN:          return "THISFN";
+          case RETURN_RESULT:   return "RETURN_RESULT";
+          case ARRAYLIT:        return "ARRAYLIT";
+          case OBJECTLIT:       return "OBJECTLIT";
+          case GET_REF:         return "GET_REF";
+          case SET_REF:         return "SET_REF";
+          case DEL_REF:         return "DEL_REF";
+          case REF_CALL:        return "REF_CALL";
+          case REF_SPECIAL:     return "REF_SPECIAL";
+          case DEFAULTNAMESPACE:return "DEFAULTNAMESPACE";
+          case ESCXMLTEXT:      return "ESCXMLTEXT";
+          case ESCXMLATTR:      return "ESCXMLATTR";
+          case REF_MEMBER:      return "REF_MEMBER";
+          case REF_NS_MEMBER:   return "REF_NS_MEMBER";
+          case REF_NAME:        return "REF_NAME";
+          case REF_NS_NAME:     return "REF_NS_NAME";
+          case TRY:             return "TRY";
+          case SEMI:            return "SEMI";
+          case LB:              return "LB";
+          case RB:              return "RB";
+          case LC:              return "LC";
+          case RC:              return "RC";
+          case LP:              return "LP";
+          case RP:              return "RP";
+          case COMMA:           return "COMMA";
+          case ASSIGN:          return "ASSIGN";
+          case ASSIGN_BITOR:    return "ASSIGN_BITOR";
+          case ASSIGN_BITXOR:   return "ASSIGN_BITXOR";
+          case ASSIGN_BITAND:   return "ASSIGN_BITAND";
+          case ASSIGN_LSH:      return "ASSIGN_LSH";
+          case ASSIGN_RSH:      return "ASSIGN_RSH";
+          case ASSIGN_URSH:     return "ASSIGN_URSH";
+          case ASSIGN_ADD:      return "ASSIGN_ADD";
+          case ASSIGN_SUB:      return "ASSIGN_SUB";
+          case ASSIGN_MUL:      return "ASSIGN_MUL";
+          case ASSIGN_DIV:      return "ASSIGN_DIV";
+          case ASSIGN_MOD:      return "ASSIGN_MOD";
+          case HOOK:            return "HOOK";
+          case COLON:           return "COLON";
+          case OR:              return "OR";
+          case AND:             return "AND";
+          case INC:             return "INC";
+          case DEC:             return "DEC";
+          case DOT:             return "DOT";
+          case FUNCTION:        return "FUNCTION";
+          case EXPORT:          return "EXPORT";
+          case IMPORT:          return "IMPORT";
+          case IF:              return "IF";
+          case ELSE:            return "ELSE";
+          case SWITCH:          return "SWITCH";
+          case CASE:            return "CASE";
+          case DEFAULT:         return "DEFAULT";
+          case WHILE:           return "WHILE";
+          case DO:              return "DO";
+          case FOR:             return "FOR";
+          case BREAK:           return "BREAK";
+          case CONTINUE:        return "CONTINUE";
+          case VAR:             return "VAR";
+          case WITH:            return "WITH";
+          case CATCH:           return "CATCH";
+          case FINALLY:         return "FINALLY";
+          case VOID:            return "VOID";
+          case RESERVED:        return "RESERVED";
+          case EMPTY:           return "EMPTY";
+          case BLOCK:           return "BLOCK";
+          case LABEL:           return "LABEL";
+          case TARGET:          return "TARGET";
+          case LOOP:            return "LOOP";
+          case EXPR_VOID:       return "EXPR_VOID";
+          case EXPR_RESULT:     return "EXPR_RESULT";
+          case JSR:             return "JSR";
+          case SCRIPT:          return "SCRIPT";
+          case TYPEOFNAME:      return "TYPEOFNAME";
+          case USE_STACK:       return "USE_STACK";
+          case SETPROP_OP:      return "SETPROP_OP";
+          case SETELEM_OP:      return "SETELEM_OP";
+          case LOCAL_BLOCK:     return "LOCAL_BLOCK";
+          case SET_REF_OP:      return "SET_REF_OP";
+          case DOTDOT:          return "DOTDOT";
+          case COLONCOLON:      return "COLONCOLON";
+          case XML:             return "XML";
+          case DOTQUERY:        return "DOTQUERY";
+          case XMLATTR:         return "XMLATTR";
+          case XMLEND:          return "XMLEND";
+          case TO_OBJECT:       return "TO_OBJECT";
+          case TO_DOUBLE:       return "TO_DOUBLE";
+          case GET:             return "GET";
+          case SET:             return "SET";
+          case LET:             return "LET";
+          case YIELD:           return "YIELD";
+          case CONST:           return "CONST";
+          case SETCONST:        return "SETCONST";
+          case ARRAYCOMP:       return "ARRAYCOMP";
+          case WITHEXPR:        return "WITHEXPR";
+          case LETEXPR:         return "LETEXPR";
+          case DEBUGGER:        return "DEBUGGER";
+        }
+
+        // Token without name
+        throw new IllegalStateException(String.valueOf(token));
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/TokenStream.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/TokenStream.java
new file mode 100644
index 0000000..c8c3045
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/TokenStream.java
@@ -0,0 +1,1500 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Roger Lawrence
+ *   Mike McCabe
+ *   Igor Bukanov
+ *   Ethan Hugg
+ *   Bob Jervis
+ *   Terry Lucas
+ *   Milen Nankov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.*;
+
+/**
+ * This class implements the JavaScript scanner.
+ *
+ * It is based on the C source files jsscan.c and jsscan.h
+ * in the jsref package.
+ *
+ * @see org.mozilla.javascript.Parser
+ *
+ * @author Mike McCabe
+ * @author Brendan Eich
+ */
+
+class TokenStream
+{
+    /*
+     * For chars - because we need something out-of-range
+     * to check.  (And checking EOF by exception is annoying.)
+     * Note distinction from EOF token type!
+     */
+    private final static int
+        EOF_CHAR = -1;
+
+    TokenStream(Parser parser, Reader sourceReader, String sourceString,
+                int lineno)
+    {
+        this.parser = parser;
+        this.lineno = lineno;
+        if (sourceReader != null) {
+            if (sourceString != null) Kit.codeBug();
+            this.sourceReader = sourceReader;
+            this.sourceBuffer = new char[512];
+            this.sourceEnd = 0;
+        } else {
+            if (sourceString == null) Kit.codeBug();
+            this.sourceString = sourceString;
+            this.sourceEnd = sourceString.length();
+        }
+        this.sourceCursor = 0;
+    }
+
+    /* This function uses the cached op, string and number fields in
+     * TokenStream; if getToken has been called since the passed token
+     * was scanned, the op or string printed may be incorrect.
+     */
+    String tokenToString(int token)
+    {
+        if (Token.printTrees) {
+            String name = Token.name(token);
+
+            switch (token) {
+            case Token.STRING:
+            case Token.REGEXP:
+            case Token.NAME:
+                return name + " `" + this.string + "'";
+
+            case Token.NUMBER:
+                return "NUMBER " + this.number;
+            }
+
+            return name;
+        }
+        return "";
+    }
+
+    static boolean isKeyword(String s)
+    {
+        return Token.EOF != stringToKeyword(s);
+    }
+
+    private static int stringToKeyword(String name)
+    {
+// #string_id_map#
+// The following assumes that Token.EOF == 0
+        final int
+            Id_break         = Token.BREAK,
+            Id_case          = Token.CASE,
+            Id_continue      = Token.CONTINUE,
+            Id_default       = Token.DEFAULT,
+            Id_delete        = Token.DELPROP,
+            Id_do            = Token.DO,
+            Id_else          = Token.ELSE,
+            Id_export        = Token.EXPORT,
+            Id_false         = Token.FALSE,
+            Id_for           = Token.FOR,
+            Id_function      = Token.FUNCTION,
+            Id_if            = Token.IF,
+            Id_in            = Token.IN,
+            Id_let           = Token.LET,
+            Id_new           = Token.NEW,
+            Id_null          = Token.NULL,
+            Id_return        = Token.RETURN,
+            Id_switch        = Token.SWITCH,
+            Id_this          = Token.THIS,
+            Id_true          = Token.TRUE,
+            Id_typeof        = Token.TYPEOF,
+            Id_var           = Token.VAR,
+            Id_void          = Token.VOID,
+            Id_while         = Token.WHILE,
+            Id_with          = Token.WITH,
+            Id_yield         = Token.YIELD,
+
+            // the following are #ifdef RESERVE_JAVA_KEYWORDS in jsscan.c
+            Id_abstract      = Token.RESERVED,
+            Id_boolean       = Token.RESERVED,
+            Id_byte          = Token.RESERVED,
+            Id_catch         = Token.CATCH,
+            Id_char          = Token.RESERVED,
+            Id_class         = Token.RESERVED,
+            Id_const         = Token.CONST,
+            Id_debugger      = Token.DEBUGGER,
+            Id_double        = Token.RESERVED,
+            Id_enum          = Token.RESERVED,
+            Id_extends       = Token.RESERVED,
+            Id_final         = Token.RESERVED,
+            Id_finally       = Token.FINALLY,
+            Id_float         = Token.RESERVED,
+            Id_goto          = Token.RESERVED,
+            Id_implements    = Token.RESERVED,
+            Id_import        = Token.IMPORT,
+            Id_instanceof    = Token.INSTANCEOF,
+            Id_int           = Token.RESERVED,
+            Id_interface     = Token.RESERVED,
+            Id_long          = Token.RESERVED,
+            Id_native        = Token.RESERVED,
+            Id_package       = Token.RESERVED,
+            Id_private       = Token.RESERVED,
+            Id_protected     = Token.RESERVED,
+            Id_public        = Token.RESERVED,
+            Id_short         = Token.RESERVED,
+            Id_static        = Token.RESERVED,
+            Id_super         = Token.RESERVED,
+            Id_synchronized  = Token.RESERVED,
+            Id_throw         = Token.THROW,
+            Id_throws        = Token.RESERVED,
+            Id_transient     = Token.RESERVED,
+            Id_try           = Token.TRY,
+            Id_volatile      = Token.RESERVED;
+
+        int id;
+        String s = name;
+// #generated# Last update: 2007-04-18 13:53:30 PDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 2: c=s.charAt(1);
+                if (c=='f') { if (s.charAt(0)=='i') {id=Id_if; break L0;} }
+                else if (c=='n') { if (s.charAt(0)=='i') {id=Id_in; break L0;} }
+                else if (c=='o') { if (s.charAt(0)=='d') {id=Id_do; break L0;} }
+                break L;
+            case 3: switch (s.charAt(0)) {
+                case 'f': if (s.charAt(2)=='r' && s.charAt(1)=='o') {id=Id_for; break L0;} break L;
+                case 'i': if (s.charAt(2)=='t' && s.charAt(1)=='n') {id=Id_int; break L0;} break L;
+                case 'l': if (s.charAt(2)=='t' && s.charAt(1)=='e') {id=Id_let; break L0;} break L;
+                case 'n': if (s.charAt(2)=='w' && s.charAt(1)=='e') {id=Id_new; break L0;} break L;
+                case 't': if (s.charAt(2)=='y' && s.charAt(1)=='r') {id=Id_try; break L0;} break L;
+                case 'v': if (s.charAt(2)=='r' && s.charAt(1)=='a') {id=Id_var; break L0;} break L;
+                } break L;
+            case 4: switch (s.charAt(0)) {
+                case 'b': X="byte";id=Id_byte; break L;
+                case 'c': c=s.charAt(3);
+                    if (c=='e') { if (s.charAt(2)=='s' && s.charAt(1)=='a') {id=Id_case; break L0;} }
+                    else if (c=='r') { if (s.charAt(2)=='a' && s.charAt(1)=='h') {id=Id_char; break L0;} }
+                    break L;
+                case 'e': c=s.charAt(3);
+                    if (c=='e') { if (s.charAt(2)=='s' && s.charAt(1)=='l') {id=Id_else; break L0;} }
+                    else if (c=='m') { if (s.charAt(2)=='u' && s.charAt(1)=='n') {id=Id_enum; break L0;} }
+                    break L;
+                case 'g': X="goto";id=Id_goto; break L;
+                case 'l': X="long";id=Id_long; break L;
+                case 'n': X="null";id=Id_null; break L;
+                case 't': c=s.charAt(3);
+                    if (c=='e') { if (s.charAt(2)=='u' && s.charAt(1)=='r') {id=Id_true; break L0;} }
+                    else if (c=='s') { if (s.charAt(2)=='i' && s.charAt(1)=='h') {id=Id_this; break L0;} }
+                    break L;
+                case 'v': X="void";id=Id_void; break L;
+                case 'w': X="with";id=Id_with; break L;
+                } break L;
+            case 5: switch (s.charAt(2)) {
+                case 'a': X="class";id=Id_class; break L;
+                case 'e': c=s.charAt(0);
+                    if (c=='b') { X="break";id=Id_break; }
+                    else if (c=='y') { X="yield";id=Id_yield; }
+                    break L;
+                case 'i': X="while";id=Id_while; break L;
+                case 'l': X="false";id=Id_false; break L;
+                case 'n': c=s.charAt(0);
+                    if (c=='c') { X="const";id=Id_const; }
+                    else if (c=='f') { X="final";id=Id_final; }
+                    break L;
+                case 'o': c=s.charAt(0);
+                    if (c=='f') { X="float";id=Id_float; }
+                    else if (c=='s') { X="short";id=Id_short; }
+                    break L;
+                case 'p': X="super";id=Id_super; break L;
+                case 'r': X="throw";id=Id_throw; break L;
+                case 't': X="catch";id=Id_catch; break L;
+                } break L;
+            case 6: switch (s.charAt(1)) {
+                case 'a': X="native";id=Id_native; break L;
+                case 'e': c=s.charAt(0);
+                    if (c=='d') { X="delete";id=Id_delete; }
+                    else if (c=='r') { X="return";id=Id_return; }
+                    break L;
+                case 'h': X="throws";id=Id_throws; break L;
+                    /*APPJET*//* case 'm': X="import";id=Id_import; break L;*/
+                case 'o': X="double";id=Id_double; break L;
+                case 't': X="static";id=Id_static; break L;
+                case 'u': X="public";id=Id_public; break L;
+                case 'w': X="switch";id=Id_switch; break L;
+                case 'x': X="export";id=Id_export; break L;
+                case 'y': X="typeof";id=Id_typeof; break L;
+                } break L;
+            case 7: switch (s.charAt(1)) {
+                case 'a': X="package";id=Id_package; break L;
+                case 'e': X="default";id=Id_default; break L;
+                case 'i': X="finally";id=Id_finally; break L;
+                case 'o': X="boolean";id=Id_boolean; break L;
+                case 'r': X="private";id=Id_private; break L;
+                case 'x': X="extends";id=Id_extends; break L;
+                } break L;
+            case 8: switch (s.charAt(0)) {
+                case 'a': X="abstract";id=Id_abstract; break L;
+                case 'c': X="continue";id=Id_continue; break L;
+                case 'd': X="debugger";id=Id_debugger; break L;
+                case 'f': X="function";id=Id_function; break L;
+                case 'v': X="volatile";id=Id_volatile; break L;
+                } break L;
+            case 9: c=s.charAt(0);
+                if (c=='i') { X="interface";id=Id_interface; }
+                else if (c=='p') { X="protected";id=Id_protected; }
+                else if (c=='t') { X="transient";id=Id_transient; }
+                break L;
+            case 10: c=s.charAt(1);
+                if (c=='m') { X="implements";id=Id_implements; }
+                else if (c=='n') { X="instanceof";id=Id_instanceof; }
+                break L;
+            case 12: X="synchronized";id=Id_synchronized; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+        }
+// #/generated#
+// #/string_id_map#
+        if (id == 0) { return Token.EOF; }
+        return id & 0xff;
+    }
+
+    final int getLineno() { return lineno; }
+
+    final String getString() { return string; }
+
+    final double getNumber() { return number; }
+
+    final boolean eof() { return hitEOF; }
+
+    final int getToken() throws IOException
+    {
+        int c;
+
+    retry:
+        for (;;) {
+            // Eat whitespace, possibly sensitive to newlines.
+            for (;;) {
+                c = getChar();
+                if (c == EOF_CHAR) {
+                    return Token.EOF;
+                } else if (c == '\n') {
+                    dirtyLine = false;
+                    return Token.EOL;
+                } else if (!isJSSpace(c)) {
+                    if (c != '-') {
+                        dirtyLine = true;
+                    }
+                    break;
+                }
+            }
+
+            if (c == '@') return Token.XMLATTR;
+
+            // identifier/keyword/instanceof?
+            // watch out for starting with a <backslash>
+            boolean identifierStart;
+            boolean isUnicodeEscapeStart = false;
+            if (c == '\\') {
+                c = getChar();
+                if (c == 'u') {
+                    identifierStart = true;
+                    isUnicodeEscapeStart = true;
+                    stringBufferTop = 0;
+                } else {
+                    identifierStart = false;
+                    ungetChar(c);
+                    c = '\\';
+                }
+            } else {
+                identifierStart = Character.isJavaIdentifierStart((char)c);
+                if (identifierStart) {
+                    stringBufferTop = 0;
+                    addToString(c);
+                }
+            }
+
+            if (identifierStart) {
+                boolean containsEscape = isUnicodeEscapeStart;
+                for (;;) {
+                    if (isUnicodeEscapeStart) {
+                        // strictly speaking we should probably push-back
+                        // all the bad characters if the <backslash>uXXXX
+                        // sequence is malformed. But since there isn't a
+                        // correct context(is there?) for a bad Unicode
+                        // escape sequence in an identifier, we can report
+                        // an error here.
+                        int escapeVal = 0;
+                        for (int i = 0; i != 4; ++i) {
+                            c = getChar();
+                            escapeVal = Kit.xDigitToInt(c, escapeVal);
+                            // Next check takes care about c < 0 and bad escape
+                            if (escapeVal < 0) { break; }
+                        }
+                        if (escapeVal < 0) {
+                            parser.addError("msg.invalid.escape");
+                            return Token.ERROR;
+                        }
+                        addToString(escapeVal);
+                        isUnicodeEscapeStart = false;
+                    } else {
+                        c = getChar();
+                        if (c == '\\') {
+                            c = getChar();
+                            if (c == 'u') {
+                                isUnicodeEscapeStart = true;
+                                containsEscape = true;
+                            } else {
+                                /*APPJET*/
+                                parser.addError("msg.illegal.character.appjet",
+                                                "\\"+Character.toString((char)c));
+                                return Token.ERROR;
+                            }
+                        } else {
+                            if (c == EOF_CHAR
+                                || !Character.isJavaIdentifierPart((char)c))
+                            {
+                                break;
+                            }
+                            addToString(c);
+                        }
+                    }
+                }
+                ungetChar(c);
+
+                String str = getStringFromBuffer();
+                /*APPJET*//*MOVED*/this.string = (String)allStrings.intern(str);
+                /*APPJET this move lets the names of RESERVED tokens and other
+                  tokens be determined, and also fixes broken yield/let parsing
+                  under pre-1.7 JS */
+                if (!containsEscape) {
+                    // OPT we shouldn't have to make a string (object!) to
+                    // check if it's a keyword.
+
+                    // Return the corresponding token if it's a keyword
+                    int result = stringToKeyword(str);
+                    if (result != Token.EOF) {
+                        if ((result == Token.LET || result == Token.YIELD) && 
+                            parser.compilerEnv.getLanguageVersion() 
+                               < Context.VERSION_1_7)
+                        {
+                            // LET and YIELD are tokens only in 1.7 and later
+                            result = Token.NAME;
+                        }
+                        if (result != Token.RESERVED) {
+                            return result;
+                        } else if (!parser.compilerEnv.
+                                        isReservedKeywordAsIdentifier())
+                        {
+                            return result;
+                        } else {
+                            // If implementation permits to use future reserved
+                            // keywords in violation with the EcmaScript,
+                            // treat it as name but issue warning
+                            parser.addWarning("msg.reserved.keyword", str);
+                        }
+                    }
+                }
+                return Token.NAME;
+            }
+
+            // is it a number?
+            if (isDigit(c) || (c == '.' && isDigit(peekChar()))) {
+
+                stringBufferTop = 0;
+                int base = 10;
+
+                if (c == '0') {
+                    c = getChar();
+                    if (c == 'x' || c == 'X') {
+                        base = 16;
+                        c = getChar();
+                    } else if (isDigit(c)) {
+                        base = 8;
+                    } else {
+                        addToString('0');
+                    }
+                }
+
+                if (base == 16) {
+                    while (0 <= Kit.xDigitToInt(c, 0)) {
+                        addToString(c);
+                        c = getChar();
+                    }
+                } else {
+                    while ('0' <= c && c <= '9') {
+                        /*
+                         * We permit 08 and 09 as decimal numbers, which
+                         * makes our behavior a superset of the ECMA
+                         * numeric grammar.  We might not always be so
+                         * permissive, so we warn about it.
+                         */
+                        if (base == 8 && c >= '8') {
+                            parser.addWarning("msg.bad.octal.literal",
+                                              c == '8' ? "8" : "9");
+                            base = 10;
+                        }
+                        addToString(c);
+                        c = getChar();
+                    }
+                }
+
+                boolean isInteger = true;
+
+                if (base == 10 && (c == '.' || c == 'e' || c == 'E')) {
+                    isInteger = false;
+                    if (c == '.') {
+                        do {
+                            addToString(c);
+                            c = getChar();
+                        } while (isDigit(c));
+                    }
+                    if (c == 'e' || c == 'E') {
+                        addToString(c);
+                        c = getChar();
+                        if (c == '+' || c == '-') {
+                            addToString(c);
+                            c = getChar();
+                        }
+                        if (!isDigit(c)) {
+                            parser.addError("msg.missing.exponent");
+                            return Token.ERROR;
+                        }
+                        do {
+                            addToString(c);
+                            c = getChar();
+                        } while (isDigit(c));
+                    }
+                }
+                ungetChar(c);
+                String numString = getStringFromBuffer();
+
+                double dval;
+                if (base == 10 && !isInteger) {
+                    try {
+                        // Use Java conversion to number from string...
+                        dval = Double.valueOf(numString).doubleValue();
+                    }
+                    catch (NumberFormatException ex) {
+                        parser.addError("msg.caught.nfe");
+                        return Token.ERROR;
+                    }
+                } else {
+                    dval = ScriptRuntime.stringToNumber(numString, 0, base);
+                }
+
+                this.number = dval;
+                return Token.NUMBER;
+            }
+
+            // is it a string?
+            if (c == '"' || c == '\'') {
+                // We attempt to accumulate a string the fast way, by
+                // building it directly out of the reader.  But if there
+                // are any escaped characters in the string, we revert to
+                // building it out of a StringBuffer.
+
+                /*APPJET*/
+                if (c == '"' && tryReadTripleQuotedString()) {
+                    return Token.STRING;
+                }
+                
+                int quoteChar = c;
+                stringBufferTop = 0;
+
+                c = getChar();
+            strLoop: while (c != quoteChar) {
+                    if (c == '\n' || c == EOF_CHAR) {
+                        ungetChar(c);
+                        /*APPJET*/
+                        parser.addError("msg.unterminated.string.lit",
+                                        Character.toString((char)quoteChar));
+                        return Token.ERROR;
+                    }
+
+                    if (c == '\\') {
+                        // We've hit an escaped character
+                        int escapeVal;
+
+                        c = getChar();
+                        switch (c) {
+                        case 'b': c = '\b'; break;
+                        case 'f': c = '\f'; break;
+                        case 'n': c = '\n'; break;
+                        case 'r': c = '\r'; break;
+                        case 't': c = '\t'; break;
+
+                        // \v a late addition to the ECMA spec,
+                        // it is not in Java, so use 0xb
+                        case 'v': c = 0xb; break;
+
+                        case 'u':
+                            // Get 4 hex digits; if the u escape is not
+                            // followed by 4 hex digits, use 'u' + the
+                            // literal character sequence that follows.
+                            int escapeStart = stringBufferTop;
+                            addToString('u');
+                            escapeVal = 0;
+                            for (int i = 0; i != 4; ++i) {
+                                c = getChar();
+                                escapeVal = Kit.xDigitToInt(c, escapeVal);
+                                if (escapeVal < 0) {
+                                    continue strLoop;
+                                }
+                                addToString(c);
+                            }
+                            // prepare for replace of stored 'u' sequence
+                            // by escape value
+                            stringBufferTop = escapeStart;
+                            c = escapeVal;
+                            break;
+                        case 'x':
+                            // Get 2 hex digits, defaulting to 'x'+literal
+                            // sequence, as above.
+                            c = getChar();
+                            escapeVal = Kit.xDigitToInt(c, 0);
+                            if (escapeVal < 0) {
+                                addToString('x');
+                                continue strLoop;
+                            } else {
+                                int c1 = c;
+                                c = getChar();
+                                escapeVal = Kit.xDigitToInt(c, escapeVal);
+                                if (escapeVal < 0) {
+                                    addToString('x');
+                                    addToString(c1);
+                                    continue strLoop;
+                                } else {
+                                    // got 2 hex digits
+                                    c = escapeVal;
+                                }
+                            }
+                            break;
+
+                        case '\n':
+                            // Remove line terminator after escape to follow
+                            // SpiderMonkey and C/C++
+                            c = getChar();
+                            continue strLoop;
+
+                        default:
+                            if ('0' <= c && c < '8') {
+                                int val = c - '0';
+                                c = getChar();
+                                if ('0' <= c && c < '8') {
+                                    val = 8 * val + c - '0';
+                                    c = getChar();
+                                    if ('0' <= c && c < '8' && val <= 037) {
+                                        // c is 3rd char of octal sequence only
+                                        // if the resulting val <= 0377
+                                        val = 8 * val + c - '0';
+                                        c = getChar();
+                                    }
+                                }
+                                ungetChar(c);
+                                c = val;
+                            }
+                        }
+                    }
+                    addToString(c);
+                    c = getChar();
+                }
+
+                String str = getStringFromBuffer();
+                this.string = (String)allStrings.intern(str);
+                return Token.STRING;
+            }
+
+            switch (c) {
+            case ';': return Token.SEMI;
+            case '[': return Token.LB;
+            case ']': return Token.RB;
+            case '{': return Token.LC;
+            case '}': return Token.RC;
+            case '(': return Token.LP;
+            case ')': return Token.RP;
+            case ',': return Token.COMMA;
+            case '?': return Token.HOOK;
+            case ':':
+                if (matchChar(':')) {
+                    return Token.COLONCOLON;
+                } else {
+                    return Token.COLON;
+                }
+            case '.':
+                if (matchChar('.')) {
+                    return Token.DOTDOT;
+                } else if (matchChar('(')) {
+                    return Token.DOTQUERY;
+                } else {
+                    return Token.DOT;
+                }
+
+            case '|':
+                if (matchChar('|')) {
+                    return Token.OR;
+                } else if (matchChar('=')) {
+                    return Token.ASSIGN_BITOR;
+                } else {
+                    return Token.BITOR;
+                }
+
+            case '^':
+                if (matchChar('=')) {
+                    return Token.ASSIGN_BITXOR;
+                } else {
+                    return Token.BITXOR;
+                }
+
+            case '&':
+                if (matchChar('&')) {
+                    return Token.AND;
+                } else if (matchChar('=')) {
+                    return Token.ASSIGN_BITAND;
+                } else {
+                    return Token.BITAND;
+                }
+
+            case '=':
+                if (matchChar('=')) {
+                    if (matchChar('='))
+                        return Token.SHEQ;
+                    else
+                        return Token.EQ;
+                } else {
+                    return Token.ASSIGN;
+                }
+
+            case '!':
+                if (matchChar('=')) {
+                    if (matchChar('='))
+                        return Token.SHNE;
+                    else
+                        return Token.NE;
+                } else {
+                    return Token.NOT;
+                }
+
+            case '<':
+                /* NB:treat HTML begin-comment as comment-till-eol */
+                if (matchChar('!')) {
+                    if (matchChar('-')) {
+                        if (matchChar('-')) {
+                            skipLine();
+                            continue retry;
+                        }
+                        ungetChar('-');
+                    }
+                    ungetChar('!');
+                }
+                if (matchChar('<')) {
+                    if (matchChar('=')) {
+                        return Token.ASSIGN_LSH;
+                    } else {
+                        return Token.LSH;
+                    }
+                } else {
+                    if (matchChar('=')) {
+                        return Token.LE;
+                    } else {
+                        return Token.LT;
+                    }
+                }
+
+            case '>':
+                if (matchChar('>')) {
+                    if (matchChar('>')) {
+                        if (matchChar('=')) {
+                            return Token.ASSIGN_URSH;
+                        } else {
+                            return Token.URSH;
+                        }
+                    } else {
+                        if (matchChar('=')) {
+                            return Token.ASSIGN_RSH;
+                        } else {
+                            return Token.RSH;
+                        }
+                    }
+                } else {
+                    if (matchChar('=')) {
+                        return Token.GE;
+                    } else {
+                        return Token.GT;
+                    }
+                }
+
+            case '*':
+                if (matchChar('=')) {
+                    return Token.ASSIGN_MUL;
+                } else {
+                    return Token.MUL;
+                }
+
+            case '/':
+                // is it a // comment?
+                if (matchChar('/')) {
+                    skipLine();
+                    continue retry;
+                }
+                if (matchChar('*')) {
+                    boolean lookForSlash = false;
+                    for (;;) {
+                        c = getChar();
+                        if (c == EOF_CHAR) {
+                            parser.addError("msg.unterminated.comment");
+                            return Token.ERROR;
+                        } else if (c == '*') {
+                            lookForSlash = true;
+                        } else if (c == '/') {
+                            if (lookForSlash) {
+                                continue retry;
+                            }
+                        } else {
+                            lookForSlash = false;
+                        }
+                    }
+                }
+
+                if (matchChar('=')) {
+                    return Token.ASSIGN_DIV;
+                } else {
+                    return Token.DIV;
+                }
+
+            case '%':
+                if (matchChar('=')) {
+                    return Token.ASSIGN_MOD;
+                } else {
+                    return Token.MOD;
+                }
+
+            case '~':
+                return Token.BITNOT;
+
+            case '+':
+                if (matchChar('=')) {
+                    return Token.ASSIGN_ADD;
+                } else if (matchChar('+')) {
+                    return Token.INC;
+                } else {
+                    return Token.ADD;
+                }
+
+            case '-':
+                if (matchChar('=')) {
+                    c = Token.ASSIGN_SUB;
+                } else if (matchChar('-')) {
+                    if (!dirtyLine) {
+                        // treat HTML end-comment after possible whitespace
+                        // after line start as comment-utill-eol
+                        if (matchChar('>')) {
+                            skipLine();
+                            continue retry;
+                        }
+                    }
+                    c = Token.DEC;
+                } else {
+                    c = Token.SUB;
+                }
+                dirtyLine = true;
+                return c;
+
+            default:
+                /*APPJET*/
+                parser.addError("msg.illegal.character.appjet",
+                                Character.toString((char)c));
+                return Token.ERROR;
+            }
+        }
+    }
+
+    private static boolean isAlpha(int c)
+    {
+        // Use 'Z' < 'a'
+        if (c <= 'Z') {
+            return 'A' <= c;
+        } else {
+            return 'a' <= c && c <= 'z';
+        }
+    }
+
+    static boolean isDigit(int c)
+    {
+        return '0' <= c && c <= '9';
+    }
+
+    /* As defined in ECMA.  jsscan.c uses C isspace() (which allows
+     * \v, I think.)  note that code in getChar() implicitly accepts
+     * '\r' == \u000D as well.
+     */
+    static boolean isJSSpace(int c)
+    {
+        if (c <= 127) {
+            return c == 0x20 || c == 0x9 || c == 0xC || c == 0xB;
+        } else {
+            return c == 0xA0
+                || Character.getType((char)c) == Character.SPACE_SEPARATOR;
+        }
+    }
+
+    private static boolean isJSFormatChar(int c)
+    {
+        return c > 127 && Character.getType((char)c) == Character.FORMAT;
+    }
+
+    /**
+     * Parser calls the method when it gets / or /= in literal context.
+     */
+    void readRegExp(int startToken)
+        throws IOException
+    {
+        stringBufferTop = 0;
+        if (startToken == Token.ASSIGN_DIV) {
+            // Miss-scanned /=
+            addToString('=');
+        } else {
+            if (startToken != Token.DIV) Kit.codeBug();
+        }
+
+        int c;
+        while ((c = getChar()) != '/') {
+            if (c == '\n' || c == EOF_CHAR) {
+                ungetChar(c);
+                throw parser.reportError("msg.unterminated.re.lit");
+            }
+            if (c == '\\') {
+                addToString(c);
+                c = getChar();
+            }
+
+            addToString(c);
+        }
+        int reEnd = stringBufferTop;
+
+        while (true) {
+            if (matchChar('g'))
+                addToString('g');
+            else if (matchChar('i'))
+                addToString('i');
+            else if (matchChar('m'))
+                addToString('m');
+            else
+                break;
+        }
+
+        if (isAlpha(peekChar())) {
+            throw parser.reportError("msg.invalid.re.flag");
+        }
+
+        this.string = new String(stringBuffer, 0, reEnd);
+        this.regExpFlags = new String(stringBuffer, reEnd,
+                                      stringBufferTop - reEnd);
+    }
+
+    boolean isXMLAttribute()
+    {
+        return xmlIsAttribute;
+    }
+
+    int getFirstXMLToken() throws IOException
+    {
+        xmlOpenTagsCount = 0;
+        xmlIsAttribute = false;
+        xmlIsTagContent = false;
+        ungetChar('<');
+        return getNextXMLToken();
+    }
+
+    int getNextXMLToken() throws IOException
+    {
+        stringBufferTop = 0; // remember the XML
+
+        for (int c = getChar(); c != EOF_CHAR; c = getChar()) {
+            if (xmlIsTagContent) {
+                switch (c) {
+                case '>':
+                    addToString(c);
+                    xmlIsTagContent = false;
+                    xmlIsAttribute = false;
+                    break;
+                case '/':
+                    addToString(c);
+                    if (peekChar() == '>') {
+                        c = getChar();
+                        addToString(c);
+                        xmlIsTagContent = false;
+                        xmlOpenTagsCount--;
+                    }
+                    break;
+                case '{':
+                    ungetChar(c);
+                    this.string = getStringFromBuffer();
+                    return Token.XML;
+                case '\'':
+                case '"':
+                    addToString(c);
+                    if (!readQuotedString(c)) return Token.ERROR;
+                    break;
+                case '=':
+                    addToString(c);
+                    xmlIsAttribute = true;
+                    break;
+                case ' ':
+                case '\t':
+                case '\r':
+                case '\n':
+                    addToString(c);
+                    break;
+                default:
+                    addToString(c);
+                    xmlIsAttribute = false;
+                    break;
+                }
+
+                if (!xmlIsTagContent && xmlOpenTagsCount == 0) {
+                    this.string = getStringFromBuffer();
+                    return Token.XMLEND;
+                }
+            } else {
+                switch (c) {
+                case '<':
+                    addToString(c);
+                    c = peekChar();
+                    switch (c) {
+                    case '!':
+                        c = getChar(); // Skip !
+                        addToString(c);
+                        c = peekChar();
+                        switch (c) {
+                        case '-':
+                            c = getChar(); // Skip -
+                            addToString(c);
+                            c = getChar();
+                            if (c == '-') {
+                                addToString(c);
+                                if(!readXmlComment()) return Token.ERROR;
+                            } else {
+                                // throw away the string in progress
+                                stringBufferTop = 0;
+                                this.string = null;
+                                parser.addError("msg.XML.bad.form");
+                                return Token.ERROR;
+                            }
+                            break;
+                        case '[':
+                            c = getChar(); // Skip [
+                            addToString(c);
+                            if (getChar() == 'C' &&
+                                getChar() == 'D' &&
+                                getChar() == 'A' &&
+                                getChar() == 'T' &&
+                                getChar() == 'A' &&
+                                getChar() == '[')
+                            {
+                                addToString('C');
+                                addToString('D');
+                                addToString('A');
+                                addToString('T');
+                                addToString('A');
+                                addToString('[');
+                                if (!readCDATA()) return Token.ERROR;
+
+                            } else {
+                                // throw away the string in progress
+                                stringBufferTop = 0;
+                                this.string = null;
+                                parser.addError("msg.XML.bad.form");
+                                return Token.ERROR;
+                            }
+                            break;
+                        default:
+                            if(!readEntity()) return Token.ERROR;
+                            break;
+                        }
+                        break;
+                    case '?':
+                        c = getChar(); // Skip ?
+                        addToString(c);
+                        if (!readPI()) return Token.ERROR;
+                        break;
+                    case '/':
+                        // End tag
+                        c = getChar(); // Skip /
+                        addToString(c);
+                        if (xmlOpenTagsCount == 0) {
+                            // throw away the string in progress
+                            stringBufferTop = 0;
+                            this.string = null;
+                            parser.addError("msg.XML.bad.form");
+                            return Token.ERROR;
+                        }
+                        xmlIsTagContent = true;
+                        xmlOpenTagsCount--;
+                        break;
+                    default:
+                        // Start tag
+                        xmlIsTagContent = true;
+                        xmlOpenTagsCount++;
+                        break;
+                    }
+                    break;
+                case '{':
+                    ungetChar(c);
+                    this.string = getStringFromBuffer();
+                    return Token.XML;
+                default:
+                    addToString(c);
+                    break;
+                }
+            }
+        }
+
+        stringBufferTop = 0; // throw away the string in progress
+        this.string = null;
+        parser.addError("msg.XML.bad.form");
+        return Token.ERROR;
+    }
+
+    /**
+     *
+     */
+    private boolean readQuotedString(int quote) throws IOException
+    {
+        for (int c = getChar(); c != EOF_CHAR; c = getChar()) {
+            addToString(c);
+            if (c == quote) return true;
+        }
+
+        stringBufferTop = 0; // throw away the string in progress
+        this.string = null;
+        parser.addError("msg.XML.bad.form");
+        return false;
+    }
+
+    /**
+     *
+     */
+    private boolean readXmlComment() throws IOException
+    {
+        for (int c = getChar(); c != EOF_CHAR;) {
+            addToString(c);
+            if (c == '-' && peekChar() == '-') {
+                c = getChar();
+                addToString(c);
+                if (peekChar() == '>') {
+                    c = getChar(); // Skip >
+                    addToString(c);
+                    return true;
+                } else {
+                    continue;
+                }
+            }
+            c = getChar();
+        }
+
+        stringBufferTop = 0; // throw away the string in progress
+        this.string = null;
+        parser.addError("msg.XML.bad.form");
+        return false;
+    }
+
+    /**
+     *
+     */
+    private boolean readCDATA() throws IOException
+    {
+        for (int c = getChar(); c != EOF_CHAR;) {
+            addToString(c);
+            if (c == ']' && peekChar() == ']') {
+                c = getChar();
+                addToString(c);
+                if (peekChar() == '>') {
+                    c = getChar(); // Skip >
+                    addToString(c);
+                    return true;
+                } else {
+                    continue;
+                }
+            }
+            c = getChar();
+        }
+
+        stringBufferTop = 0; // throw away the string in progress
+        this.string = null;
+        parser.addError("msg.XML.bad.form");
+        return false;
+    }
+
+    /**
+     *
+     */
+    private boolean readEntity() throws IOException
+    {
+        int declTags = 1;
+        for (int c = getChar(); c != EOF_CHAR; c = getChar()) {
+            addToString(c);
+            switch (c) {
+            case '<':
+                declTags++;
+                break;
+            case '>':
+                declTags--;
+                if (declTags == 0) return true;
+                break;
+            }
+        }
+
+        stringBufferTop = 0; // throw away the string in progress
+        this.string = null;
+        parser.addError("msg.XML.bad.form");
+        return false;
+    }
+
+    /**
+     *
+     */
+    private boolean readPI() throws IOException
+    {
+        for (int c = getChar(); c != EOF_CHAR; c = getChar()) {
+            addToString(c);
+            if (c == '?' && peekChar() == '>') {
+                c = getChar(); // Skip >
+                addToString(c);
+                return true;
+            }
+        }
+
+        stringBufferTop = 0; // throw away the string in progress
+        this.string = null;
+        parser.addError("msg.XML.bad.form");
+        return false;
+    }
+
+    private String getStringFromBuffer()
+    {
+        return new String(stringBuffer, 0, stringBufferTop);
+    }
+
+    private void addToString(int c)
+    {
+        int N = stringBufferTop;
+        if (N == stringBuffer.length) {
+            char[] tmp = new char[stringBuffer.length * 2];
+            System.arraycopy(stringBuffer, 0, tmp, 0, N);
+            stringBuffer = tmp;
+        }
+        stringBuffer[N] = (char)c;
+        stringBufferTop = N + 1;
+    }
+
+    private void ungetChar(int c)
+    {
+        // can not unread past across line boundary
+        if (ungetCursor != 0 && ungetBuffer[ungetCursor - 1] == '\n')
+            Kit.codeBug();
+        ungetBuffer[ungetCursor++] = c;
+    }
+
+    private boolean matchChar(int test) throws IOException
+    {
+        int c = getChar();
+        if (c == test) {
+            return true;
+        } else {
+            ungetChar(c);
+            return false;
+        }
+    }
+
+    private int peekChar() throws IOException
+    {
+        int c = getChar();
+        ungetChar(c);
+        return c;
+    }
+
+    private int getChar() throws IOException
+    {
+        if (ungetCursor != 0) {
+            return ungetBuffer[--ungetCursor];
+        }
+
+        for(;;) {
+            int c;
+            if (sourceString != null) {
+                if (sourceCursor == sourceEnd) {
+                    hitEOF = true;
+                    return EOF_CHAR;
+                }
+                c = sourceString.charAt(sourceCursor++);
+            } else {
+                if (sourceCursor == sourceEnd) {
+                    if (!fillSourceBuffer()) {
+                        hitEOF = true;
+                        return EOF_CHAR;
+                    }
+                }
+                c = sourceBuffer[sourceCursor++];
+            }
+
+            if (lineEndChar >= 0) {
+                if (lineEndChar == '\r' && c == '\n') {
+                    lineEndChar = '\n';
+                    continue;
+                }
+                lineEndChar = -1;
+                lineStart = sourceCursor - 1;
+                lineno++;
+            }
+
+            if (c <= 127) {
+                if (c == '\n' || c == '\r') {
+                    lineEndChar = c;
+                    c = '\n';
+                }
+            } else {
+                if (isJSFormatChar(c)) {
+                    continue;
+                }
+                if (ScriptRuntime.isJSLineTerminator(c)) {
+                    lineEndChar = c;
+                    c = '\n';
+                }
+            }
+            return c;
+        }
+    }
+
+    private void skipLine() throws IOException
+    {
+        // skip to end of line
+        int c;
+        while ((c = getChar()) != EOF_CHAR && c != '\n') { }
+        ungetChar(c);
+    }
+
+    final int getOffset()
+    {
+        int n = sourceCursor - lineStart;
+        if (lineEndChar >= 0) { --n; }
+        return n;
+    }
+
+    final String getLine()
+    {
+        if (sourceString != null) {
+            // String case
+            int lineEnd = sourceCursor;
+            if (lineEndChar >= 0) {
+                --lineEnd;
+            } else {
+                for (; lineEnd != sourceEnd; ++lineEnd) {
+                    int c = sourceString.charAt(lineEnd);
+                    if (ScriptRuntime.isJSLineTerminator(c)) {
+                        break;
+                    }
+                }
+            }
+            return sourceString.substring(lineStart, lineEnd);
+        } else {
+            // Reader case
+            int lineLength = sourceCursor - lineStart;
+            if (lineEndChar >= 0) {
+                --lineLength;
+            } else {
+                // Read until the end of line
+                for (;; ++lineLength) {
+                    int i = lineStart + lineLength;
+                    if (i == sourceEnd) {
+                        try {
+                            if (!fillSourceBuffer()) { break; }
+                        } catch (IOException ioe) {
+                            // ignore it, we're already displaying an error...
+                            break;
+                        }
+                        // i recalculuation as fillSourceBuffer can move saved
+                        // line buffer and change lineStart
+                        i = lineStart + lineLength;
+                    }
+                    int c = sourceBuffer[i];
+                    if (ScriptRuntime.isJSLineTerminator(c)) {
+                        break;
+                    }
+                }
+            }
+            return new String(sourceBuffer, lineStart, lineLength);
+        }
+    }
+
+    private boolean fillSourceBuffer() throws IOException
+    {
+        if (sourceString != null) Kit.codeBug();
+        if (sourceEnd == sourceBuffer.length) {
+            if (lineStart != 0) {
+                System.arraycopy(sourceBuffer, lineStart, sourceBuffer, 0,
+                                 sourceEnd - lineStart);
+                sourceEnd -= lineStart;
+                sourceCursor -= lineStart;
+                lineStart = 0;
+            } else {
+                char[] tmp = new char[sourceBuffer.length * 2];
+                System.arraycopy(sourceBuffer, 0, tmp, 0, sourceEnd);
+                sourceBuffer = tmp;
+            }
+        }
+        int n = sourceReader.read(sourceBuffer, sourceEnd,
+                                  sourceBuffer.length - sourceEnd);
+        if (n < 0) {
+            return false;
+        }
+        sourceEnd += n;
+        return true;
+    }
+
+    // stuff other than whitespace since start of line
+    private boolean dirtyLine;
+
+    String regExpFlags;
+
+    // Set this to an inital non-null value so that the Parser has
+    // something to retrieve even if an error has occured and no
+    // string is found.  Fosters one class of error, but saves lots of
+    // code.
+    private String string = "";
+    private double number;
+
+    private char[] stringBuffer = new char[128];
+    private int stringBufferTop;
+    private ObjToIntMap allStrings = new ObjToIntMap(50);
+
+    // Room to backtrace from to < on failed match of the last - in <!--
+    private final int[] ungetBuffer = new int[3];
+    private int ungetCursor;
+
+    private boolean hitEOF = false;
+
+    private int lineStart = 0;
+    private int lineno;
+    private int lineEndChar = -1;
+
+    private String sourceString;
+    private Reader sourceReader;
+    private char[] sourceBuffer;
+    private int sourceEnd;
+    private int sourceCursor;
+
+    // for xml tokenizer
+    private boolean xmlIsAttribute;
+    private boolean xmlIsTagContent;
+    private int xmlOpenTagsCount;
+
+    private Parser parser;
+
+    /*APPJET*//* added method */
+    private boolean tryReadTripleQuotedString() throws IOException {
+        // have to be kind of clever, because we don't want to
+        // add to the overhead of tokenizing, but there are constraints
+        // like "once you've gotten a newline and put it back (ungotten it),
+        // you can't put anything else back"
+
+        // have seen one quote
+        int c = getChar();
+        if (c != '"') { ungetChar(c); return false; }
+        // have seen two quotes
+        c = getChar();
+        if (c != '"') {
+            ungetChar(c);
+            this.string = (String)allStrings.intern("");
+            return true;
+        }
+        // have seen three quotes
+
+        final boolean newPolicy = false;
+        
+        stringBufferTop = 0;
+
+        boolean afterBackslash = false;
+        boolean done = false;
+        while (! done) {
+            c = getChar();
+            if (c == EOF_CHAR) {
+                ungetChar(c);
+                throw parser.reportError("msg.unterminated.mstring.appjet");
+            }
+            if (c == '"') {
+                int quoteCount = 0;
+                int quoteLimit = 3;
+                if (newPolicy && ! afterBackslash)
+                    quoteLimit = 5;
+                while (c == '"' && quoteCount < quoteLimit) {
+                    quoteCount++;
+                    c = getChar();
+                }
+                ungetChar(c);
+
+                if (afterBackslash) {
+                    if (quoteCount < 3) addToString('\\');
+                }
+                else if (quoteCount >= 3) {
+                    quoteCount -= 3;
+                    done = true;
+                }
+                
+                while (quoteCount > 0) {
+                    addToString('"'); quoteCount--;
+                }
+                afterBackslash = false;
+            }
+            else {
+                if (afterBackslash) {
+                    addToString('\\');
+                    afterBackslash = false;
+                }
+                if (c == '\\') {
+                    afterBackslash = true;
+                }
+                else {
+                    addToString(c);
+                }
+            }
+        }
+
+        String str = getStringFromBuffer();
+        this.string = (String)allStrings.intern(str);
+        
+        return true;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/UintMap.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/UintMap.java
new file mode 100644
index 0000000..0027819
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/UintMap.java
@@ -0,0 +1,659 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+
+/**
+ * Map to associate non-negative integers to objects or integers.
+ * The map does not synchronize any of its operation, so either use
+ * it from a single thread or do own synchronization or perform all mutation
+ * operations on one thread before passing the map to others.
+ *
+ * @author Igor Bukanov
+ *
+ */
+
+public class UintMap implements Serializable
+{
+    static final long serialVersionUID = 4242698212885848444L;
+
+// Map implementation via hashtable,
+// follows "The Art of Computer Programming" by Donald E. Knuth
+
+    public UintMap() {
+        this(4);
+    }
+
+    public UintMap(int initialCapacity) {
+        if (initialCapacity < 0) Kit.codeBug();
+        // Table grow when number of stored keys >= 3/4 of max capacity
+        int minimalCapacity = initialCapacity * 4 / 3;
+        int i;
+        for (i = 2; (1 << i) < minimalCapacity; ++i) { }
+        power = i;
+        if (check && power < 2) Kit.codeBug();
+    }
+
+    public boolean isEmpty() {
+        return keyCount == 0;
+    }
+
+    public int size() {
+        return keyCount;
+    }
+
+    public boolean has(int key) {
+        if (key < 0) Kit.codeBug();
+        return 0 <= findIndex(key);
+    }
+
+    /**
+     * Get object value assigned with key.
+     * @return key object value or null if key is absent
+     */
+    public Object getObject(int key) {
+        if (key < 0) Kit.codeBug();
+        if (values != null) {
+            int index = findIndex(key);
+            if (0 <= index) {
+                return values[index];
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Get integer value assigned with key.
+     * @return key integer value or defaultValue if key is absent
+     */
+    public int getInt(int key, int defaultValue) {
+        if (key < 0) Kit.codeBug();
+        int index = findIndex(key);
+        if (0 <= index) {
+            if (ivaluesShift != 0) {
+                return keys[ivaluesShift + index];
+            }
+            return 0;
+        }
+        return defaultValue;
+    }
+
+    /**
+     * Get integer value assigned with key.
+     * @return key integer value or defaultValue if key does not exist or does
+     * not have int value
+     * @throws RuntimeException if key does not exist
+     */
+    public int getExistingInt(int key) {
+        if (key < 0) Kit.codeBug();
+        int index = findIndex(key);
+        if (0 <= index) {
+            if (ivaluesShift != 0) {
+                return keys[ivaluesShift + index];
+            }
+            return 0;
+        }
+        // Key must exist
+        Kit.codeBug();
+        return 0;
+    }
+
+    /**
+     * Set object value of the key.
+     * If key does not exist, also set its int value to 0.
+     */
+    public void put(int key, Object value) {
+        if (key < 0) Kit.codeBug();
+        int index = ensureIndex(key, false);
+        if (values == null) {
+            values = new Object[1 << power];
+        }
+        values[index] = value;
+    }
+
+    /**
+     * Set int value of the key.
+     * If key does not exist, also set its object value to null.
+     */
+    public void put(int key, int value) {
+        if (key < 0) Kit.codeBug();
+        int index = ensureIndex(key, true);
+        if (ivaluesShift == 0) {
+            int N = 1 << power;
+            // keys.length can be N * 2 after clear which set ivaluesShift to 0
+            if (keys.length != N * 2) {
+                int[] tmp = new int[N * 2];
+                System.arraycopy(keys, 0, tmp, 0, N);
+                keys = tmp;
+            }
+            ivaluesShift = N;
+        }
+        keys[ivaluesShift + index] = value;
+    }
+
+    public void remove(int key) {
+        if (key < 0) Kit.codeBug();
+        int index = findIndex(key);
+        if (0 <= index) {
+            keys[index] = DELETED;
+            --keyCount;
+            // Allow to GC value and make sure that new key with the deleted
+            // slot shall get proper default values
+            if (values != null) { values[index] = null; }
+            if (ivaluesShift != 0) { keys[ivaluesShift + index] = 0; }
+        }
+    }
+
+    public void clear() {
+        int N = 1 << power;
+        if (keys != null) {
+            for (int i = 0; i != N; ++i) {
+                keys[i] = EMPTY;
+            }
+            if (values != null) {
+                for (int i = 0; i != N; ++i) {
+                    values[i] = null;
+                }
+            }
+        }
+        ivaluesShift = 0;
+        keyCount = 0;
+        occupiedCount = 0;
+    }
+
+    /** Return array of present keys */
+    public int[] getKeys() {
+        int[] keys = this.keys;
+        int n = keyCount;
+        int[] result = new int[n];
+        for (int i = 0; n != 0; ++i) {
+            int entry = keys[i];
+            if (entry != EMPTY && entry != DELETED) {
+                result[--n] = entry;
+            }
+        }
+        return result;
+    }
+
+    private static int tableLookupStep(int fraction, int mask, int power) {
+        int shift = 32 - 2 * power;
+        if (shift >= 0) {
+            return ((fraction >>> shift) & mask) | 1;
+        }
+        else {
+            return (fraction & (mask >>> -shift)) | 1;
+        }
+    }
+
+    private int findIndex(int key) {
+        int[] keys = this.keys;
+        if (keys != null) {
+            int fraction = key * A;
+            int index = fraction >>> (32 - power);
+            int entry = keys[index];
+            if (entry == key) { return index; }
+            if (entry != EMPTY) {
+                // Search in table after first failed attempt
+                int mask = (1 << power) - 1;
+                int step = tableLookupStep(fraction, mask, power);
+                int n = 0;
+                do {
+                    if (check) {
+                        if (n >= occupiedCount) Kit.codeBug();
+                        ++n;
+                    }
+                    index = (index + step) & mask;
+                    entry = keys[index];
+                    if (entry == key) { return index; }
+                } while (entry != EMPTY);
+            }
+        }
+        return -1;
+    }
+
+// Insert key that is not present to table without deleted entries
+// and enough free space
+    private int insertNewKey(int key) {
+        if (check && occupiedCount != keyCount) Kit.codeBug();
+        if (check && keyCount == 1 << power) Kit.codeBug();
+        int[] keys = this.keys;
+        int fraction = key * A;
+        int index = fraction >>> (32 - power);
+        if (keys[index] != EMPTY) {
+            int mask = (1 << power) - 1;
+            int step = tableLookupStep(fraction, mask, power);
+            int firstIndex = index;
+            do {
+                if (check && keys[index] == DELETED) Kit.codeBug();
+                index = (index + step) & mask;
+                if (check && firstIndex == index) Kit.codeBug();
+            } while (keys[index] != EMPTY);
+        }
+        keys[index] = key;
+        ++occupiedCount;
+        ++keyCount;
+        return index;
+    }
+
+    private void rehashTable(boolean ensureIntSpace) {
+        if (keys != null) {
+            // Check if removing deleted entries would free enough space
+            if (keyCount * 2 >= occupiedCount) {
+                // Need to grow: less then half of deleted entries
+                ++power;
+            }
+        }
+        int N = 1 << power;
+        int[] old = keys;
+        int oldShift = ivaluesShift;
+        if (oldShift == 0 && !ensureIntSpace) {
+            keys = new int[N];
+        }
+        else {
+            ivaluesShift = N; keys = new int[N * 2];
+        }
+        for (int i = 0; i != N; ++i) { keys[i] = EMPTY; }
+
+        Object[] oldValues = values;
+        if (oldValues != null) { values = new Object[N]; }
+
+        int oldCount = keyCount;
+        occupiedCount = 0;
+        if (oldCount != 0) {
+            keyCount = 0;
+            for (int i = 0, remaining = oldCount; remaining != 0; ++i) {
+                int key = old[i];
+                if (key != EMPTY && key != DELETED) {
+                    int index = insertNewKey(key);
+                    if (oldValues != null) {
+                        values[index] = oldValues[i];
+                    }
+                    if (oldShift != 0) {
+                        keys[ivaluesShift + index] = old[oldShift + i];
+                    }
+                    --remaining;
+                }
+            }
+        }
+    }
+
+// Ensure key index creating one if necessary
+    private int ensureIndex(int key, boolean intType) {
+        int index = -1;
+        int firstDeleted = -1;
+        int[] keys = this.keys;
+        if (keys != null) {
+            int fraction = key * A;
+            index = fraction >>> (32 - power);
+            int entry = keys[index];
+            if (entry == key) { return index; }
+            if (entry != EMPTY) {
+                if (entry == DELETED) { firstDeleted = index; }
+                // Search in table after first failed attempt
+                int mask = (1 << power) - 1;
+                int step = tableLookupStep(fraction, mask, power);
+                int n = 0;
+                do {
+                    if (check) {
+                        if (n >= occupiedCount) Kit.codeBug();
+                        ++n;
+                    }
+                    index = (index + step) & mask;
+                    entry = keys[index];
+                    if (entry == key) { return index; }
+                    if (entry == DELETED && firstDeleted < 0) {
+                        firstDeleted = index;
+                    }
+                } while (entry != EMPTY);
+            }
+        }
+        // Inserting of new key
+        if (check && keys != null && keys[index] != EMPTY)
+            Kit.codeBug();
+        if (firstDeleted >= 0) {
+            index = firstDeleted;
+        }
+        else {
+            // Need to consume empty entry: check occupation level
+            if (keys == null || occupiedCount * 4 >= (1 << power) * 3) {
+                // Too litle unused entries: rehash
+                rehashTable(intType);
+                keys = this.keys;
+                return insertNewKey(key);
+            }
+            ++occupiedCount;
+        }
+        keys[index] = key;
+        ++keyCount;
+        return index;
+    }
+
+    private void writeObject(ObjectOutputStream out)
+        throws IOException
+    {
+        out.defaultWriteObject();
+
+        int count = keyCount;
+        if (count != 0) {
+            boolean hasIntValues = (ivaluesShift != 0);
+            boolean hasObjectValues = (values != null);
+            out.writeBoolean(hasIntValues);
+            out.writeBoolean(hasObjectValues);
+
+            for (int i = 0; count != 0; ++i) {
+                int key = keys[i];
+                if (key != EMPTY && key != DELETED) {
+                    --count;
+                    out.writeInt(key);
+                    if (hasIntValues) {
+                        out.writeInt(keys[ivaluesShift + i]);
+                    }
+                    if (hasObjectValues) {
+                        out.writeObject(values[i]);
+                    }
+                }
+            }
+        }
+    }
+
+    private void readObject(ObjectInputStream in)
+        throws IOException, ClassNotFoundException
+    {
+        in.defaultReadObject();
+
+        int writtenKeyCount = keyCount;
+        if (writtenKeyCount != 0) {
+            keyCount = 0;
+            boolean hasIntValues = in.readBoolean();
+            boolean hasObjectValues = in.readBoolean();
+
+            int N = 1 << power;
+            if (hasIntValues) {
+                keys = new int[2 * N];
+                ivaluesShift = N;
+            }else {
+                keys = new int[N];
+            }
+            for (int i = 0; i != N; ++i) {
+                keys[i] = EMPTY;
+            }
+            if (hasObjectValues) {
+                values = new Object[N];
+            }
+            for (int i = 0; i != writtenKeyCount; ++i) {
+                int key = in.readInt();
+                int index = insertNewKey(key);
+                if (hasIntValues) {
+                    int ivalue = in.readInt();
+                    keys[ivaluesShift + index] = ivalue;
+                }
+                if (hasObjectValues) {
+                    values[index] = in.readObject();
+                }
+            }
+        }
+    }
+
+// A == golden_ratio * (1 << 32) = ((sqrt(5) - 1) / 2) * (1 << 32)
+// See Knuth etc.
+    private static final int A = 0x9e3779b9;
+
+    private static final int EMPTY = -1;
+    private static final int DELETED = -2;
+
+// Structure of kyes and values arrays (N == 1 << power):
+// keys[0 <= i < N]: key value or EMPTY or DELETED mark
+// values[0 <= i < N]: value of key at keys[i]
+// keys[N <= i < 2N]: int values of keys at keys[i - N]
+
+    private transient int[] keys;
+    private transient Object[] values;
+
+    private int power;
+    private int keyCount;
+    private transient int occupiedCount; // == keyCount + deleted_count
+
+    // If ivaluesShift != 0, keys[ivaluesShift + index] contains integer
+    // values associated with keys
+    private transient int ivaluesShift;
+
+// If true, enables consitency checks
+    private static final boolean check = false;
+
+/* TEST START
+
+    public static void main(String[] args) {
+        if (!check) {
+            System.err.println("Set check to true and re-run");
+            throw new RuntimeException("Set check to true and re-run");
+        }
+
+        UintMap map;
+        map = new UintMap();
+        testHash(map, 2);
+        map = new UintMap();
+        testHash(map, 10 * 1000);
+        map = new UintMap(30 * 1000);
+        testHash(map, 10 * 100);
+        map.clear();
+        testHash(map, 4);
+        map = new UintMap(0);
+        testHash(map, 10 * 100);
+    }
+
+    private static void testHash(UintMap map, int N) {
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            map.put(i, i);
+            check(i == map.getInt(i, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            map.put(i, i);
+            check(i == map.getInt(i, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            map.put(i, new Integer(i));
+            check(-1 == map.getInt(i, -1));
+            Integer obj = (Integer)map.getObject(i);
+            check(obj != null && i == obj.intValue());
+        }
+
+        check(map.size() == N);
+
+        System.out.print("."); System.out.flush();
+        int[] keys = map.getKeys();
+        check(keys.length == N);
+        for (int i = 0; i != N; ++i) {
+            int key = keys[i];
+            check(map.has(key));
+            check(!map.isIntType(key));
+            check(map.isObjectType(key));
+            Integer obj = (Integer) map.getObject(key);
+            check(obj != null && key == obj.intValue());
+        }
+
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            check(-1 == map.getInt(i, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            map.put(i * i, i);
+            check(i == map.getInt(i * i, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            check(i == map.getInt(i * i, -1));
+        }
+
+        System.out.print("."); System.out.flush();
+        for (int i = 0; i != N; ++i) {
+            map.put(i * i, new Integer(i));
+            check(-1 == map.getInt(i * i, -1));
+            map.remove(i * i);
+            check(!map.has(i * i));
+            map.put(i * i, i);
+            check(map.isIntType(i * i));
+            check(null == map.getObject(i * i));
+            map.remove(i * i);
+            check(!map.isObjectType(i * i));
+            check(!map.isIntType(i * i));
+        }
+
+        int old_size = map.size();
+        for (int i = 0; i != N; ++i) {
+            map.remove(i * i);
+            check(map.size() == old_size);
+        }
+
+        System.out.print("."); System.out.flush();
+        map.clear();
+        check(map.size() == 0);
+        for (int i = 0; i != N; ++i) {
+            map.put(i * i, i);
+            map.put(i * i + 1, new Double(i+0.5));
+        }
+        checkSameMaps(map, (UintMap)writeAndRead(map));
+
+        System.out.print("."); System.out.flush();
+        map = new UintMap(0);
+        checkSameMaps(map, (UintMap)writeAndRead(map));
+        map = new UintMap(1);
+        checkSameMaps(map, (UintMap)writeAndRead(map));
+        map = new UintMap(1000);
+        checkSameMaps(map, (UintMap)writeAndRead(map));
+
+        System.out.print("."); System.out.flush();
+        map = new UintMap(N / 10);
+        for (int i = 0; i != N; ++i) {
+            map.put(2*i+1, i);
+        }
+        checkSameMaps(map, (UintMap)writeAndRead(map));
+
+        System.out.print("."); System.out.flush();
+        map = new UintMap(N / 10);
+        for (int i = 0; i != N; ++i) {
+            map.put(2*i+1, i);
+        }
+        for (int i = 0; i != N / 2; ++i) {
+            map.remove(2*i+1);
+        }
+        checkSameMaps(map, (UintMap)writeAndRead(map));
+
+        System.out.print("."); System.out.flush();
+        map = new UintMap();
+        for (int i = 0; i != N; ++i) {
+            map.put(2*i+1, new Double(i + 10));
+        }
+        for (int i = 0; i != N / 2; ++i) {
+            map.remove(2*i+1);
+        }
+        checkSameMaps(map, (UintMap)writeAndRead(map));
+
+        System.out.println(); System.out.flush();
+
+    }
+
+    private static void checkSameMaps(UintMap map1, UintMap map2) {
+        check(map1.size() == map2.size());
+        int[] keys = map1.getKeys();
+        check(keys.length == map1.size());
+        for (int i = 0; i != keys.length; ++i) {
+            int key = keys[i];
+            check(map2.has(key));
+            check(map1.isObjectType(key) == map2.isObjectType(key));
+            check(map1.isIntType(key) == map2.isIntType(key));
+            Object o1 = map1.getObject(key);
+            Object o2 = map2.getObject(key);
+            if (map1.isObjectType(key)) {
+                check(o1.equals(o2));
+            }else {
+                check(map1.getObject(key) == null);
+                check(map2.getObject(key) == null);
+            }
+            if (map1.isIntType(key)) {
+                check(map1.getExistingInt(key) == map2.getExistingInt(key));
+            }else {
+                check(map1.getInt(key, -10) == -10);
+                check(map1.getInt(key, -11) == -11);
+                check(map2.getInt(key, -10) == -10);
+                check(map2.getInt(key, -11) == -11);
+            }
+        }
+    }
+
+    private static void check(boolean condition) {
+        if (!condition) Kit.codeBug();
+    }
+
+    private static Object writeAndRead(Object obj) {
+        try {
+            java.io.ByteArrayOutputStream
+                bos = new java.io.ByteArrayOutputStream();
+            java.io.ObjectOutputStream
+                out = new java.io.ObjectOutputStream(bos);
+            out.writeObject(obj);
+            out.close();
+            byte[] data = bos.toByteArray();
+            java.io.ByteArrayInputStream
+                bis = new java.io.ByteArrayInputStream(data);
+            java.io.ObjectInputStream
+                in = new java.io.ObjectInputStream(bis);
+            Object result = in.readObject();
+            in.close();
+            return result;
+        }catch (Exception ex) {
+            ex.printStackTrace();
+            throw new RuntimeException("Unexpected");
+        }
+    }
+
+// TEST END */
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Undefined.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Undefined.java
new file mode 100644
index 0000000..472f26c
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Undefined.java
@@ -0,0 +1,60 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+
+/**
+ * This class implements the Undefined value in JavaScript.
+ */
+public class Undefined implements Serializable
+{
+    static final long serialVersionUID = 9195680630202616767L;
+
+    public static final Object instance = new Undefined();
+
+    private Undefined()
+    {
+    }
+
+    public Object readResolve()
+    {
+        return instance;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/UniqueTag.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/UniqueTag.java
new file mode 100644
index 0000000..33f96eb
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/UniqueTag.java
@@ -0,0 +1,120 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import java.io.Serializable;
+
+/**
+ * Class instances represent serializable tags to mark special Object values.
+ * <p>
+ * Compatibility note: under jdk 1.1 use
+ * org.mozilla.javascript.serialize.ScriptableInputStream to read serialized
+ * instances of UniqueTag as under this JDK version the default
+ * ObjectInputStream would not restore them correctly as it lacks support
+ * for readResolve method
+ */
+public final class UniqueTag implements Serializable
+{
+    static final long serialVersionUID = -4320556826714577259L;
+
+    private static final int ID_NOT_FOUND    = 1;
+    private static final int ID_NULL_VALUE   = 2;
+    private static final int ID_DOUBLE_MARK  = 3;
+
+    /**
+     * Tag to mark non-existing values.
+     */
+    public static final UniqueTag
+        NOT_FOUND = new UniqueTag(ID_NOT_FOUND);
+
+    /**
+     * Tag to distinguish between uninitialized and null values.
+     */
+    public static final UniqueTag
+        NULL_VALUE = new UniqueTag(ID_NULL_VALUE);
+
+    /**
+     * Tag to indicate that a object represents "double" with the real value
+     * stored somewhere else.
+     */
+    public static final UniqueTag
+        DOUBLE_MARK = new UniqueTag(ID_DOUBLE_MARK);
+
+    private final int tagId;
+
+    private UniqueTag(int tagId)
+    {
+        this.tagId = tagId;
+    }
+
+    public Object readResolve()
+    {
+        switch (tagId) {
+          case ID_NOT_FOUND:
+            return NOT_FOUND;
+          case ID_NULL_VALUE:
+            return NULL_VALUE;
+          case ID_DOUBLE_MARK:
+            return DOUBLE_MARK;
+        }
+        throw new IllegalStateException(String.valueOf(tagId));
+    }
+
+// Overridden for better debug printouts
+    public String toString()
+    {
+        String name;
+        switch (tagId) {
+          case ID_NOT_FOUND:
+            name = "NOT_FOUND";
+            break;
+          case ID_NULL_VALUE:
+            name = "NULL_VALUE";
+            break;
+          case ID_DOUBLE_MARK:
+            name = "DOUBLE_MARK";
+            break;
+          default:
+            throw Kit.codeBug();
+        }
+        return super.toString()+": "+name;
+    }
+
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/VMBridge.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/VMBridge.java
new file mode 100644
index 0000000..5fba4a5
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/VMBridge.java
@@ -0,0 +1,183 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Member;
+import java.util.Iterator;
+
+public abstract class VMBridge
+{
+
+    static final VMBridge instance = makeInstance();
+
+    private static VMBridge makeInstance()
+    {
+        String[] classNames = {
+            "org.mozilla.javascript.VMBridge_custom",
+            "org.mozilla.javascript.jdk15.VMBridge_jdk15",
+            "org.mozilla.javascript.jdk13.VMBridge_jdk13",
+            "org.mozilla.javascript.jdk11.VMBridge_jdk11",
+        };
+        for (int i = 0; i != classNames.length; ++i) {
+            String className = classNames[i];
+            Class cl = Kit.classOrNull(className);
+            if (cl != null) {
+                VMBridge bridge = (VMBridge)Kit.newInstanceOrNull(cl);
+                if (bridge != null) {
+                    return bridge;
+                }
+            }
+        }
+        throw new IllegalStateException("Failed to create VMBridge instance");
+    }
+
+    /**
+     * Return a helper object to optimize {@link Context} access.
+     * <p>
+     * The runtime will pass the resulting helper object to the subsequent
+     * calls to {@link #getContext(Object contextHelper)} and
+     * {@link #setContext(Object contextHelper, Context cx)} methods.
+     * In this way the implementation can use the helper to cache
+     * information about current thread to make {@link Context} access faster.
+     */
+    protected abstract Object getThreadContextHelper();
+
+    /**
+     * Get {@link Context} instance associated with the current thread
+     * or null if none.
+     *
+     * @param contextHelper The result of {@link #getThreadContextHelper()}
+     *                      called from the current thread.
+     */
+    protected abstract Context getContext(Object contextHelper);
+
+    /**
+     * Associate {@link Context} instance with the current thread or remove
+     * the current association if <tt>cx</tt> is null.
+     *
+     * @param contextHelper The result of {@link #getThreadContextHelper()}
+     *                      called from the current thread.
+     */
+    protected abstract void setContext(Object contextHelper, Context cx);
+
+    /**
+     * Return the ClassLoader instance associated with the current thread.
+     */
+    protected abstract ClassLoader getCurrentThreadClassLoader();
+
+    /**
+     * In many JVMSs, public methods in private
+     * classes are not accessible by default (Sun Bug #4071593).
+     * VMBridge instance should try to workaround that via, for example,
+     * calling method.setAccessible(true) when it is available.
+     * The implementation is responsible to catch all possible exceptions
+     * like SecurityException if the workaround is not available.
+     *
+     * @return true if it was possible to make method accessible
+     *         or false otherwise.
+     */
+    protected abstract boolean tryToMakeAccessible(Object accessibleObject);
+
+    /**
+     * Create helper object to create later proxies implementing the specified
+     * interfaces later. Under JDK 1.3 the implementation can look like:
+     * <pre>
+     * return java.lang.reflect.Proxy.getProxyClass(..., interfaces).
+     *     getConstructor(new Class[] {
+     *         java.lang.reflect.InvocationHandler.class });
+     * </pre>
+     *
+     * @param interfaces Array with one or more interface class objects.
+     */
+    protected Object getInterfaceProxyHelper(ContextFactory cf,
+                                             Class[] interfaces)
+    {
+        throw Context.reportRuntimeError(
+            "VMBridge.getInterfaceProxyHelper is not supported");
+    }
+
+    /**
+     * Create proxy object for {@link InterfaceAdapter}. The proxy should call
+     * {@link InterfaceAdapter#invoke(ContextFactory cf,
+     *                                Object target,
+     *                                Scriptable topScope,
+     *                                Method method,
+     *                                Object[] args)}
+     * as implementation of interface methods associated with
+     * <tt>proxyHelper</tt>.
+     *
+     * @param proxyHelper The result of the previous call to
+     *        {@link #getInterfaceProxyHelper(ContextFactory, Class[])}.
+     */
+    protected Object newInterfaceProxy(Object proxyHelper,
+                                       ContextFactory cf,
+                                       InterfaceAdapter adapter,
+                                       Object target,
+                                       Scriptable topScope)
+    {
+        throw Context.reportRuntimeError(
+            "VMBridge.newInterfaceProxy is not supported");
+    }
+
+    /**
+     * Returns whether or not a given member (method or constructor)
+     * has variable arguments.
+     * Variable argument methods have only been supported in Java since
+     * JDK 1.5.
+     */
+    protected abstract boolean isVarArgs(Member member);
+
+    /**
+     * If "obj" is a java.util.Iterator or a java.lang.Iterable, return a
+     * wrapping as a JavaScript Iterator. Otherwise, return null.
+     * This method is in VMBridge since Iterable is a JDK 1.5 addition.
+     */
+    public Iterator getJavaIterator(Context cx, Scriptable scope, Object obj) {
+        if (obj instanceof Wrapper) {
+            Object unwrapped = ((Wrapper) obj).unwrap();
+            Iterator iterator = null;
+            if (unwrapped instanceof Iterator)
+                iterator = (Iterator) unwrapped;
+            return iterator;
+        }
+        return null;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/WrapFactory.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/WrapFactory.java
new file mode 100644
index 0000000..3edc203
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/WrapFactory.java
@@ -0,0 +1,183 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * Embeddings that wish to provide their own custom wrappings for Java
+ * objects may extend this class and call
+ * {@link Context#setWrapFactory(WrapFactory)}
+ * Once an instance of this class or an extension of this class is enabled
+ * for a given context (by calling setWrapFactory on that context), Rhino
+ * will call the methods of this class whenever it needs to wrap a value
+ * resulting from a call to a Java method or an access to a Java field.
+ *
+ * @see org.mozilla.javascript.Context#setWrapFactory(WrapFactory)
+ * @since 1.5 Release 4
+ */
+public class WrapFactory
+{
+    /**
+     * Wrap the object.
+     * <p>
+     * The value returned must be one of
+     * <UL>
+     * <LI>java.lang.Boolean</LI>
+     * <LI>java.lang.String</LI>
+     * <LI>java.lang.Number</LI>
+     * <LI>org.mozilla.javascript.Scriptable objects</LI>
+     * <LI>The value returned by Context.getUndefinedValue()</LI>
+     * <LI>null</LI>
+     * </UL>
+     * @param cx the current Context for this thread
+     * @param scope the scope of the executing script
+     * @param obj the object to be wrapped. Note it can be null.
+     * @param staticType type hint. If security restrictions prevent to wrap
+              object based on its class, staticType will be used instead.
+     * @return the wrapped value.
+     */
+    public Object wrap(Context cx, Scriptable scope,
+                       Object obj, Class staticType)
+    {
+        if (obj == null || obj == Undefined.instance
+            || obj instanceof Scriptable)
+        {
+            return obj;
+        }
+        if (staticType != null && staticType.isPrimitive()) {
+            if (staticType == Void.TYPE)
+                return Undefined.instance;
+            if (staticType == Character.TYPE)
+                return new Integer(((Character) obj).charValue());
+            return obj;
+        }
+        if (!isJavaPrimitiveWrap()) {
+            if (obj instanceof String || obj instanceof Number
+                || obj instanceof Boolean)
+            {
+                return obj;
+            } else if (obj instanceof Character) {
+                return String.valueOf(((Character)obj).charValue());
+            }
+        }
+        Class cls = obj.getClass();
+        if (cls.isArray()) {
+            return NativeJavaArray.wrap(scope, obj);
+        }
+        return wrapAsJavaObject(cx, scope, obj, staticType);
+    }
+
+    /**
+     * Wrap an object newly created by a constructor call.
+     * @param cx the current Context for this thread
+     * @param scope the scope of the executing script
+     * @param obj the object to be wrapped
+     * @return the wrapped value.
+     */
+    public Scriptable wrapNewObject(Context cx, Scriptable scope, Object obj)
+    {
+        if (obj instanceof Scriptable) {
+            return (Scriptable)obj;
+        }
+        Class cls = obj.getClass();
+        if (cls.isArray()) {
+            return NativeJavaArray.wrap(scope, obj);
+        }
+        return wrapAsJavaObject(cx, scope, obj, null);
+    }
+
+    /**
+     * Wrap Java object as Scriptable instance to allow full access to its
+     * methods and fields from JavaScript.
+     * <p>
+     * {@link #wrap(Context, Scriptable, Object, Class)} and
+     * {@link #wrapNewObject(Context, Scriptable, Object)} call this method
+     * when they can not convert <tt>javaObject</tt> to JavaScript primitive
+     * value or JavaScript array.
+     * <p>
+     * Subclasses can override the method to provide custom wrappers
+     * for Java objects.
+     * @param cx the current Context for this thread
+     * @param scope the scope of the executing script
+     * @param javaObject the object to be wrapped
+     * @param staticType type hint. If security restrictions prevent to wrap
+                object based on its class, staticType will be used instead.
+     * @return the wrapped value which shall not be null
+     */
+    public Scriptable wrapAsJavaObject(Context cx, Scriptable scope,
+                                       Object javaObject, Class staticType)
+    {
+        Scriptable wrap;
+        wrap = new NativeJavaObject(scope, javaObject, staticType);
+        return wrap;
+    }
+
+    /**
+     * Return <code>false</code> if result of Java method, which is instance of
+     * <code>String</code>, <code>Number</code>, <code>Boolean</code> and
+     * <code>Character</code>, should be used directly as JavaScript primitive
+     * type.
+     * By default the method returns true to indicate that instances of
+     * <code>String</code>, <code>Number</code>, <code>Boolean</code> and
+     * <code>Character</code> should be wrapped as any other Java object and
+     * scripts can access any Java method available in these objects.
+     * Use {@link #setJavaPrimitiveWrap(boolean)} to change this.
+     */
+    public final boolean isJavaPrimitiveWrap()
+    {
+        return javaPrimitiveWrap;
+    }
+
+    /**
+     * @see #isJavaPrimitiveWrap()
+     */
+    public final void setJavaPrimitiveWrap(boolean value)
+    {
+        Context cx = Context.getCurrentContext();
+        if (cx != null && cx.isSealed()) {
+            Context.onSealedMutation();
+        }
+        javaPrimitiveWrap = value;
+    }
+
+    private boolean javaPrimitiveWrap = true;
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/WrappedException.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/WrappedException.java
new file mode 100644
index 0000000..c749f74
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/WrappedException.java
@@ -0,0 +1,93 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * A wrapper for runtime exceptions.
+ *
+ * Used by the JavaScript runtime to wrap and propagate exceptions that occur
+ * during runtime.
+ *
+ * @author Norris Boyd
+ */
+public class WrappedException extends EvaluatorException
+{
+    static final long serialVersionUID = -1551979216966520648L;
+
+    /**
+     * @see Context#throwAsScriptRuntimeEx(Throwable e)
+     */
+    public WrappedException(Throwable exception)
+    {
+        super("Wrapped "+exception.toString());
+        this.exception = exception;
+        Kit.initCause(this, exception);
+
+        int[] linep = { 0 };
+        String sourceName = Context.getSourcePositionFromStack(linep);
+        int lineNumber = linep[0];
+        if (sourceName != null) {
+            initSourceName(sourceName);
+        }
+        if (lineNumber != 0) {
+            initLineNumber(lineNumber);
+        }
+    }
+
+    /**
+     * Get the wrapped exception.
+     *
+     * @return the exception that was presented as a argument to the
+     *         constructor when this object was created
+     */
+    public Throwable getWrappedException()
+    {
+        return exception;
+    }
+
+    /**
+     * @deprecated Use {@link #getWrappedException()} instead.
+     */
+    public Object unwrap()
+    {
+        return getWrappedException();
+    }
+
+    private Throwable exception;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Wrapper.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Wrapper.java
new file mode 100644
index 0000000..cb2d2f5
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Wrapper.java
@@ -0,0 +1,58 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript;
+
+/**
+ * Objects that can wrap other values for reflection in the JS environment
+ * will implement Wrapper.
+ *
+ * Wrapper defines a single method that can be called to unwrap the object.
+ */
+
+public interface Wrapper {
+
+    /**
+     * Unwrap the object by returning the wrapped value.
+     *
+     * @return a wrapped value
+     */
+    public Object unwrap();
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/continuations/Continuation.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/continuations/Continuation.java
new file mode 100644
index 0000000..c6d3966
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/continuations/Continuation.java
@@ -0,0 +1,136 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.continuations;
+
+import org.mozilla.javascript.*;
+
+public final class Continuation extends IdScriptableObject implements Function
+{
+    static final long serialVersionUID = 1794167133757605367L;
+
+    private static final Object FTAG = new Object();
+
+    private Object implementation;
+
+    public static void init(Context cx, Scriptable scope, boolean sealed)
+    {
+        Continuation obj = new Continuation();
+        obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
+    }
+
+    public Object getImplementation()
+    {
+        return implementation;
+    }
+
+    public void initImplementation(Object implementation)
+    {
+        this.implementation = implementation;
+    }
+
+    public String getClassName()
+    {
+        return "Continuation";
+    }
+
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        throw Context.reportRuntimeError("Direct call is not supported");
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        return Interpreter.restartContinuation(this, cx, scope, args);
+    }
+
+    public static boolean isContinuationConstructor(IdFunctionObject f)
+    {
+        if (f.hasTag(FTAG) && f.methodId() == Id_constructor) {
+            return true;
+        }
+        return false;
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_constructor: arity=0; s="constructor"; break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(FTAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(FTAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case Id_constructor:
+            throw Context.reportRuntimeError("Direct call is not supported");
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+// #string_id_map#
+
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:16:40 EDT
+        L0: { id = 0; String X = null;
+            if (s.length()==11) { X="constructor";id=Id_constructor; }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_constructor          = 1,
+        MAX_PROTOTYPE_ID        = 1;
+
+// #/string_id_map#
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebugFrame.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebugFrame.java
new file mode 100644
index 0000000..ef15710
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebugFrame.java
@@ -0,0 +1,91 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript.debug;
+
+import org.mozilla.javascript.Context;
+import org.mozilla.javascript.Scriptable;
+
+/**
+Interface to implement if the application is interested in receiving debug
+information during execution of a particular script or function.
+*/
+public interface DebugFrame {
+
+/**
+Called when execution is ready to start bytecode interpretation for entered a particular function or script.
+
+@param cx current Context for this thread
+@param activation the activation scope for the function or script.
+@param thisObj value of the JavaScript <code>this</code> object
+@param args the array of arguments
+*/
+    public void onEnter(Context cx, Scriptable activation,
+                        Scriptable thisObj, Object[] args);
+/**
+Called when executed code reaches new line in the source.
+@param cx current Context for this thread
+@param lineNumber current line number in the script source
+*/
+    public void onLineChange(Context cx, int lineNumber);
+
+/**
+Called when thrown exception is handled by the function or script.
+@param cx current Context for this thread
+@param ex exception object
+*/
+    public void onExceptionThrown(Context cx, Throwable ex);
+
+/**
+Called when the function or script for this frame is about to return.
+@param cx current Context for this thread
+@param byThrow if true function will leave by throwing exception, otherwise it
+       will execute normal return
+@param resultOrException function result in case of normal return or
+       exception object if about to throw exception
+*/
+    public void onExit(Context cx, boolean byThrow, Object resultOrException);
+
+/**
+Called when the function or script executes a 'debugger' statement.
+@param cx current Context for this thread
+*/
+    public void onDebuggerStatement(Context cx);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebuggableObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebuggableObject.java
new file mode 100644
index 0000000..23e7421
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebuggableObject.java
@@ -0,0 +1,61 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript.debug;
+
+/**
+ * This interface exposes debugging information from objects.
+ */
+public interface DebuggableObject {
+
+    /**
+     * Returns an array of ids for the properties of the object.
+     *
+     * <p>All properties, even those with attribute {DontEnum}, are listed.
+     * This allows the debugger to display all properties of the object.<p>
+     *
+     * @return an array of java.lang.Objects with an entry for every
+     * listed property. Properties accessed via an integer index will
+     * have a corresponding
+     * Integer entry in the returned array. Properties accessed by
+     * a String will have a String entry in the returned array.
+     */
+    public Object[] getAllIds();
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebuggableScript.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebuggableScript.java
new file mode 100644
index 0000000..705e442
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/DebuggableScript.java
@@ -0,0 +1,119 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript.debug;
+
+/**
+ * This interface exposes debugging information from executable
+ * code (either functions or top-level scripts).
+ */
+public interface DebuggableScript
+{
+    public boolean isTopLevel();
+
+    /**
+     * Returns true if this is a function, false if it is a script.
+     */
+    public boolean isFunction();
+
+    /**
+     * Get name of the function described by this script.
+     * Return null or an empty string if this script is not a function.
+     */
+    public String getFunctionName();
+
+    /**
+     * Get number of declared parameters in the function.
+     * Return 0 if this script is not a function.
+     *
+     * @see #getParamAndVarCount()
+     * @see #getParamOrVarName(int index)
+     */
+    public int getParamCount();
+
+    /**
+     * Get number of declared parameters and local variables.
+     * Return number of declared global variables if this script is not a
+     * function.
+     *
+     * @see #getParamCount()
+     * @see #getParamOrVarName(int index)
+     */
+    public int getParamAndVarCount();
+
+    /**
+     * Get name of a declared parameter or local variable.
+     * <tt>index</tt> should be less then {@link #getParamAndVarCount()}.
+     * If <tt>index&nbsp;&lt;&nbsp;{@link #getParamCount()}</tt>, return
+     * the name of the corresponding parameter, otherwise return the name
+     * of variable.
+     * If this script is not function, return the name of the declared
+     * global variable.
+     */
+    public String getParamOrVarName(int index);
+
+    /**
+     * Get the name of the source (usually filename or URL)
+     * of the script.
+     */
+    public String getSourceName();
+
+    /**
+     * Returns true if this script or function were runtime-generated
+     * from JavaScript using <tt>eval</tt> function or <tt>Function</tt>
+     * or <tt>Script</tt> constructors.
+     */
+    public boolean isGeneratedScript();
+
+    /**
+     * Get array containing the line numbers that
+     * that can be passed to <code>DebugFrame.onLineChange()<code>.
+     * Note that line order in the resulting array is arbitrary
+     */
+    public int[] getLineNumbers();
+
+    public int getFunctionCount();
+
+    public DebuggableScript getFunction(int index);
+
+    public DebuggableScript getParent();
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/Debugger.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/Debugger.java
new file mode 100644
index 0000000..bfac153
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/debug/Debugger.java
@@ -0,0 +1,69 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript.debug;
+
+import org.mozilla.javascript.Context;
+
+/**
+Interface to implement if the application is interested in receiving debug
+information.
+*/
+public interface Debugger {
+
+/**
+Called when compilation of a particular function or script into internal
+bytecode is done.
+
+@param cx current Context for this thread
+@param fnOrScript object describing the function or script
+@param source the function or script source
+*/
+    void handleCompilationDone(Context cx, DebuggableScript fnOrScript,
+                               String source);
+
+/**
+Called when execution entered a particular function or script.
+
+@return implementation of DebugFrame which receives debug information during
+        the function or script execution or null otherwise
+*/
+    DebugFrame getFrame(Context cx, DebuggableScript fnOrScript);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk11/VMBridge_jdk11.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk11/VMBridge_jdk11.java
new file mode 100644
index 0000000..f5d1522
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk11/VMBridge_jdk11.java
@@ -0,0 +1,84 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.jdk11;
+
+import java.lang.reflect.Member;
+import java.util.Hashtable;
+
+import org.mozilla.javascript.*;
+
+public class VMBridge_jdk11 extends VMBridge
+{
+    private Hashtable threadsWithContext = new Hashtable();
+
+    protected Object getThreadContextHelper()
+    {
+        return Thread.currentThread();
+    }
+
+    protected Context getContext(Object contextHelper)
+    {
+        Thread t = (Thread)contextHelper;
+        return (Context)threadsWithContext.get(t);
+    }
+
+    protected void setContext(Object contextHelper, Context cx)
+    {
+        Thread t = (Thread)contextHelper;
+        if (cx == null) {
+            // Allow to garbage collect thread reference
+            threadsWithContext.remove(t);
+        } else {
+            threadsWithContext.put(t, cx);
+        }
+    }
+
+    protected ClassLoader getCurrentThreadClassLoader()
+    {
+        return null;
+    }
+
+    protected boolean tryToMakeAccessible(Object accessibleObject)
+    {
+        return false;
+    }
+    
+    protected boolean isVarArgs(Member member) {
+      return false;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk13/VMBridge_jdk13.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk13/VMBridge_jdk13.java
new file mode 100644
index 0000000..c33e9b4
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk13/VMBridge_jdk13.java
@@ -0,0 +1,157 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.jdk13;
+
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.lang.reflect.Member;
+import java.lang.reflect.Proxy;
+
+import org.mozilla.javascript.*;
+
+public class VMBridge_jdk13 extends VMBridge
+{
+    private ThreadLocal contextLocal = new ThreadLocal();
+
+    protected Object getThreadContextHelper()
+    {
+        // To make subsequent batch calls to getContext/setContext faster
+        // associate permanently one element array with contextLocal
+        // so getContext/setContext would need just to read/write the first
+        // array element.
+        // Note that it is necessary to use Object[], not Context[] to allow
+        // garbage collection of Rhino classes. For details see comments
+        // by Attila Szegedi in
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=281067#c5
+
+        Object[] storage = (Object[])contextLocal.get();
+        if (storage == null) {
+            storage = new Object[1];
+            contextLocal.set(storage);
+        }
+        return storage;
+    }
+
+    protected Context getContext(Object contextHelper)
+    {
+        Object[] storage = (Object[])contextHelper;
+        return (Context)storage[0];
+    }
+
+    protected void setContext(Object contextHelper, Context cx)
+    {
+        Object[] storage = (Object[])contextHelper;
+        storage[0] = cx;
+    }
+
+    protected ClassLoader getCurrentThreadClassLoader()
+    {
+        return Thread.currentThread().getContextClassLoader();
+    }
+
+    protected boolean tryToMakeAccessible(Object accessibleObject)
+    {
+        if (!(accessibleObject instanceof AccessibleObject)) {
+            return false;
+        }
+        AccessibleObject accessible = (AccessibleObject)accessibleObject;
+        if (accessible.isAccessible()) {
+            return true;
+        }
+        try {
+            accessible.setAccessible(true);
+        } catch (Exception ex) { }
+
+        return accessible.isAccessible();
+    }
+
+    protected Object getInterfaceProxyHelper(ContextFactory cf,
+                                             Class[] interfaces)
+    {
+        // XXX: How to handle interfaces array withclasses from different
+        // class loaders? Using cf.getApplicationClassLoader() ?
+        ClassLoader loader = interfaces[0].getClassLoader();
+        Class cl = Proxy.getProxyClass(loader, interfaces);
+        Constructor c;
+        try {
+            c = cl.getConstructor(new Class[] { InvocationHandler.class });
+        } catch (NoSuchMethodException ex) {
+            // Should not happen
+            throw Kit.initCause(new IllegalStateException(), ex);
+        }
+        return c;
+    }
+
+    protected Object newInterfaceProxy(Object proxyHelper,
+                                       final ContextFactory cf,
+                                       final InterfaceAdapter adapter,
+                                       final Object target,
+                                       final Scriptable topScope)
+    {
+        Constructor c = (Constructor)proxyHelper;
+
+        InvocationHandler handler = new InvocationHandler() {
+                public Object invoke(Object proxy,
+                                     Method method,
+                                     Object[] args)
+                {
+                    return adapter.invoke(cf, target, topScope, method, args);
+                }
+            };
+        Object proxy;
+        try {
+            proxy = c.newInstance(new Object[] { handler });
+        } catch (InvocationTargetException ex) {
+            throw Context.throwAsScriptRuntimeEx(ex);
+        } catch (IllegalAccessException ex) {
+            // Shouls not happen
+            throw Kit.initCause(new IllegalStateException(), ex);
+        } catch (InstantiationException ex) {
+            // Shouls not happen
+            throw Kit.initCause(new IllegalStateException(), ex);
+        }
+        return proxy;
+    }
+    
+    protected boolean isVarArgs(Member member) {
+      return false;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk15/VMBridge_jdk15.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk15/VMBridge_jdk15.java
new file mode 100644
index 0000000..0ffaf9d
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/jdk15/VMBridge_jdk15.java
@@ -0,0 +1,87 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.jdk15;
+
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Constructor;
+import java.util.Iterator;
+import org.mozilla.javascript.*;
+
+public class VMBridge_jdk15 extends org.mozilla.javascript.jdk13.VMBridge_jdk13
+{
+    public VMBridge_jdk15() throws SecurityException, InstantiationException {
+        try {
+            // Just try and see if we can access the isVarArgs method.
+            // We want to fail loading if the method does not exist
+            // so that we can load a bridge to an older JDK instead.
+            Method.class.getMethod("isVarArgs", (Class[]) null);
+        } catch (NoSuchMethodException e) {
+            // Throw a fitting exception that is handled by
+            // org.mozilla.javascript.Kit.newInstanceOrNull:
+            throw new InstantiationException(e.getMessage());
+        }
+    }
+
+    public boolean isVarArgs(Member member) {
+        if (member instanceof Method)
+            return ((Method) member).isVarArgs();
+        else if (member instanceof Constructor)
+            return ((Constructor) member).isVarArgs();
+        else 
+            return false;
+    }
+    
+    /**
+     * If "obj" is a java.util.Iterator or a java.lang.Iterable, return a
+     * wrapping as a JavaScript Iterator. Otherwise, return null.
+     * This method is in VMBridge since Iterable is a JDK 1.5 addition.
+     */
+    public Iterator getJavaIterator(Context cx, Scriptable scope, Object obj) {
+        if (obj instanceof Wrapper) {
+            Object unwrapped = ((Wrapper) obj).unwrap();
+            Iterator iterator = null;
+            if (unwrapped instanceof Iterator)
+                iterator = (Iterator) unwrapped;
+            if (unwrapped instanceof Iterable)
+                iterator = ((Iterable)unwrapped).iterator();
+            return iterator;
+        }
+        return null;
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Block.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Block.java
new file mode 100644
index 0000000..bd56714
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Block.java
@@ -0,0 +1,615 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.optimizer;
+
+import org.mozilla.javascript.*;
+
+import java.util.Hashtable;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+class Block
+{
+
+    private static class FatBlock
+    {
+
+        private static Block[] reduceToArray(ObjToIntMap map)
+        {
+            Block[] result = null;
+            if (!map.isEmpty()) {
+                result = new Block[map.size()];
+                int i = 0;
+                ObjToIntMap.Iterator iter = map.newIterator();
+                for (iter.start(); !iter.done(); iter.next()) {
+                    FatBlock fb = (FatBlock)(iter.getKey());
+                    result[i++] = fb.realBlock;
+                }
+            }
+            return result;
+        }
+
+        void addSuccessor(FatBlock b)  { successors.put(b, 0); }
+        void addPredecessor(FatBlock b)  { predecessors.put(b, 0); }
+
+        Block[] getSuccessors() { return reduceToArray(successors); }
+        Block[] getPredecessors() { return reduceToArray(predecessors); }
+
+            // all the Blocks that come immediately after this
+        private ObjToIntMap successors = new ObjToIntMap();
+            // all the Blocks that come immediately before this
+        private ObjToIntMap predecessors = new ObjToIntMap();
+
+        Block realBlock;
+    }
+
+    Block(int startNodeIndex, int endNodeIndex)
+    {
+        itsStartNodeIndex = startNodeIndex;
+        itsEndNodeIndex = endNodeIndex;
+    }
+
+    static void runFlowAnalyzes(OptFunctionNode fn, Node[] statementNodes)
+    {
+        int paramCount = fn.fnode.getParamCount();
+        int varCount = fn.fnode.getParamAndVarCount();
+        int[] varTypes = new int[varCount];
+        // If the variable is a parameter, it could have any type.
+        for (int i = 0; i != paramCount; ++i) {
+            varTypes[i] = Optimizer.AnyType;
+        }
+        // If the variable is from a "var" statement, its typeEvent will be set
+        // when we see the setVar node.
+        for (int i = paramCount; i != varCount; ++i) {
+            varTypes[i] = Optimizer.NoType;
+        }
+
+        Block[] theBlocks = buildBlocks(statementNodes);
+
+        if (DEBUG) {
+            ++debug_blockCount;
+            System.out.println("-------------------"+fn.fnode.getFunctionName()+"  "+debug_blockCount+"--------");
+            System.out.println(toString(theBlocks, statementNodes));
+        }
+
+        reachingDefDataFlow(fn, statementNodes, theBlocks, varTypes);
+        typeFlow(fn, statementNodes, theBlocks, varTypes);
+
+        if (DEBUG) {
+            for (int i = 0; i < theBlocks.length; i++) {
+                System.out.println("For block " + theBlocks[i].itsBlockID);
+                theBlocks[i].printLiveOnEntrySet(fn);
+            }
+            System.out.println("Variable Table, size = " + varCount);
+            for (int i = 0; i != varCount; i++) {
+                System.out.println("["+i+"] type: "+varTypes[i]);
+            }
+        }
+
+        for (int i = paramCount; i != varCount; i++) {
+            if (varTypes[i] == Optimizer.NumberType) {
+                fn.setIsNumberVar(i);
+            }
+        }
+
+    }
+
+    private static Block[] buildBlocks(Node[] statementNodes)
+    {
+            // a mapping from each target node to the block it begins
+        Hashtable theTargetBlocks = new Hashtable();
+        ObjArray theBlocks = new ObjArray();
+
+            // there's a block that starts at index 0
+        int beginNodeIndex = 0;
+
+        for (int i = 0; i < statementNodes.length; i++) {
+            switch (statementNodes[i].getType()) {
+                case Token.TARGET :
+                    {
+                        if (i != beginNodeIndex) {
+                            FatBlock fb = newFatBlock(beginNodeIndex, i - 1);
+                            if (statementNodes[beginNodeIndex].getType()
+                                                        == Token.TARGET)
+                                theTargetBlocks.put(statementNodes[beginNodeIndex], fb);
+                            theBlocks.add(fb);
+                             // start the next block at this node
+                            beginNodeIndex = i;
+                        }
+                    }
+                    break;
+                case Token.IFNE :
+                case Token.IFEQ :
+                case Token.GOTO :
+                    {
+                        FatBlock fb = newFatBlock(beginNodeIndex, i);
+                        if (statementNodes[beginNodeIndex].getType()
+                                                       == Token.TARGET)
+                            theTargetBlocks.put(statementNodes[beginNodeIndex], fb);
+                        theBlocks.add(fb);
+                            // start the next block at the next node
+                        beginNodeIndex = i + 1;
+                    }
+                    break;
+            }
+        }
+
+        if (beginNodeIndex != statementNodes.length) {
+            FatBlock fb = newFatBlock(beginNodeIndex, statementNodes.length - 1);
+            if (statementNodes[beginNodeIndex].getType() == Token.TARGET)
+                theTargetBlocks.put(statementNodes[beginNodeIndex], fb);
+            theBlocks.add(fb);
+        }
+
+        // build successor and predecessor links
+
+        for (int i = 0; i < theBlocks.size(); i++) {
+            FatBlock fb = (FatBlock)(theBlocks.get(i));
+
+            Node blockEndNode = statementNodes[fb.realBlock.itsEndNodeIndex];
+            int blockEndNodeType = blockEndNode.getType();
+
+            if ((blockEndNodeType != Token.GOTO)
+                                         && (i < (theBlocks.size() - 1))) {
+                FatBlock fallThruTarget = (FatBlock)(theBlocks.get(i + 1));
+                fb.addSuccessor(fallThruTarget);
+                fallThruTarget.addPredecessor(fb);
+            }
+
+
+            if ( (blockEndNodeType == Token.IFNE)
+                        || (blockEndNodeType == Token.IFEQ)
+                                || (blockEndNodeType == Token.GOTO) ) {
+                Node target = ((Node.Jump)blockEndNode).target;
+                FatBlock branchTargetBlock
+                                    = (FatBlock)(theTargetBlocks.get(target));
+                target.putProp(Node.TARGETBLOCK_PROP,
+                                           branchTargetBlock.realBlock);
+                fb.addSuccessor(branchTargetBlock);
+                branchTargetBlock.addPredecessor(fb);
+            }
+        }
+
+        Block[] result = new Block[theBlocks.size()];
+
+        for (int i = 0; i < theBlocks.size(); i++) {
+            FatBlock fb = (FatBlock)(theBlocks.get(i));
+            Block b = fb.realBlock;
+            b.itsSuccessors = fb.getSuccessors();
+            b.itsPredecessors = fb.getPredecessors();
+            b.itsBlockID = i;
+            result[i] = b;
+        }
+
+        return result;
+    }
+
+    private static FatBlock newFatBlock(int startNodeIndex, int endNodeIndex)
+    {
+        FatBlock fb = new FatBlock();
+        fb.realBlock = new Block(startNodeIndex, endNodeIndex);
+        return fb;
+    }
+
+    private static String toString(Block[] blockList, Node[] statementNodes)
+    {
+        if (!DEBUG) return null;
+
+        StringWriter sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+
+        pw.println(blockList.length + " Blocks");
+        for (int i = 0; i < blockList.length; i++) {
+            Block b = blockList[i];
+            pw.println("#" + b.itsBlockID);
+            pw.println("from " + b.itsStartNodeIndex
+                            + " "
+                            + statementNodes[b.itsStartNodeIndex].toString());
+            pw.println("thru " + b.itsEndNodeIndex
+                            + " "
+                            + statementNodes[b.itsEndNodeIndex].toString());
+            pw.print("Predecessors ");
+            if (b.itsPredecessors != null) {
+                for (int j = 0; j < b.itsPredecessors.length; j++)
+                    pw.print(b.itsPredecessors[j].itsBlockID + " ");
+                pw.println();
+            }
+            else
+                pw.println("none");
+            pw.print("Successors ");
+            if (b.itsSuccessors != null) {
+                for (int j = 0; j < b.itsSuccessors.length; j++)
+                    pw.print(b.itsSuccessors[j].itsBlockID + " ");
+                pw.println();
+            }
+            else
+                pw.println("none");
+        }
+        return sw.toString();
+    }
+
+    private static void reachingDefDataFlow(OptFunctionNode fn, Node[] statementNodes, Block theBlocks[], int[] varTypes)
+    {
+/*
+    initialize the liveOnEntry and liveOnExit sets, then discover the variables
+    that are def'd by each function, and those that are used before being def'd
+    (hence liveOnEntry)
+*/
+        for (int i = 0; i < theBlocks.length; i++) {
+            theBlocks[i].initLiveOnEntrySets(fn, statementNodes);
+        }
+/*
+    this visits every block starting at the last, re-adding the predecessors of
+    any block whose inputs change as a result of the dataflow.
+    REMIND, better would be to visit in CFG postorder
+*/
+        boolean visit[] = new boolean[theBlocks.length];
+        boolean doneOnce[] = new boolean[theBlocks.length];
+        int vIndex = theBlocks.length - 1;
+        boolean needRescan = false;
+        visit[vIndex] = true;
+        while (true) {
+            if (visit[vIndex] || !doneOnce[vIndex]) {
+                doneOnce[vIndex] = true;
+                visit[vIndex] = false;
+                if (theBlocks[vIndex].doReachedUseDataFlow()) {
+                    Block pred[] = theBlocks[vIndex].itsPredecessors;
+                    if (pred != null) {
+                        for (int i = 0; i < pred.length; i++) {
+                            int index = pred[i].itsBlockID;
+                            visit[index] = true;
+                            needRescan |= (index > vIndex);
+                        }
+                    }
+                }
+            }
+            if (vIndex == 0) {
+                if (needRescan) {
+                    vIndex = theBlocks.length - 1;
+                    needRescan = false;
+                }
+                else
+                    break;
+            }
+            else
+                vIndex--;
+        }
+/*
+        if any variable is live on entry to block 0, we have to mark it as
+        not jRegable - since it means that someone is trying to access the
+        'undefined'-ness of that variable.
+*/
+
+        theBlocks[0].markAnyTypeVariables(varTypes);
+    }
+
+    private static void typeFlow(OptFunctionNode fn, Node[] statementNodes, Block theBlocks[], int[] varTypes)
+    {
+        boolean visit[] = new boolean[theBlocks.length];
+        boolean doneOnce[] = new boolean[theBlocks.length];
+        int vIndex = 0;
+        boolean needRescan = false;
+        visit[vIndex] = true;
+        while (true) {
+            if (visit[vIndex] || !doneOnce[vIndex]) {
+                doneOnce[vIndex] = true;
+                visit[vIndex] = false;
+                if (theBlocks[vIndex].doTypeFlow(fn, statementNodes, varTypes))
+                {
+                    Block succ[] = theBlocks[vIndex].itsSuccessors;
+                    if (succ != null) {
+                        for (int i = 0; i < succ.length; i++) {
+                            int index = succ[i].itsBlockID;
+                            visit[index] = true;
+                            needRescan |= (index < vIndex);
+                        }
+                    }
+                }
+            }
+            if (vIndex == (theBlocks.length - 1)) {
+                if (needRescan) {
+                    vIndex = 0;
+                    needRescan = false;
+                }
+                else
+                    break;
+            }
+            else
+                vIndex++;
+        }
+    }
+
+    private static boolean assignType(int[] varTypes, int index, int type)
+    {
+        return type != (varTypes[index] |= type);
+    }
+
+    private void markAnyTypeVariables(int[] varTypes)
+    {
+        for (int i = 0; i != varTypes.length; i++) {
+            if (itsLiveOnEntrySet.test(i)) {
+                assignType(varTypes, i, Optimizer.AnyType);
+            }
+        }
+
+    }
+
+    /*
+        We're tracking uses and defs - in order to
+        build the def set and to identify the last use
+        nodes.
+
+        The itsNotDefSet is built reversed then flipped later.
+
+    */
+    private void lookForVariableAccess(OptFunctionNode fn, Node n)
+    {
+        switch (n.getType()) {
+            case Token.DEC :
+            case Token.INC :
+                {
+                    Node child = n.getFirstChild();
+                    if (child.getType() == Token.GETVAR) {
+                        int varIndex = fn.getVarIndex(child);
+                        if (!itsNotDefSet.test(varIndex))
+                            itsUseBeforeDefSet.set(varIndex);
+                        itsNotDefSet.set(varIndex);
+                    }
+                }
+                break;
+            case Token.SETVAR :
+                {
+                    Node lhs = n.getFirstChild();
+                    Node rhs = lhs.getNext();
+                    lookForVariableAccess(fn, rhs);
+                    itsNotDefSet.set(fn.getVarIndex(n));
+                }
+                break;
+            case Token.GETVAR :
+                {
+                    int varIndex = fn.getVarIndex(n);
+                    if (!itsNotDefSet.test(varIndex))
+                        itsUseBeforeDefSet.set(varIndex);
+                }
+                break;
+            default :
+                Node child = n.getFirstChild();
+                while (child != null) {
+                    lookForVariableAccess(fn, child);
+                    child = child.getNext();
+                }
+                break;
+        }
+    }
+
+    /*
+        build the live on entry/exit sets.
+        Then walk the trees looking for defs/uses of variables
+        and build the def and useBeforeDef sets.
+    */
+    private void initLiveOnEntrySets(OptFunctionNode fn, Node[] statementNodes)
+    {
+        int listLength = fn.getVarCount();
+        itsUseBeforeDefSet = new DataFlowBitSet(listLength);
+        itsNotDefSet = new DataFlowBitSet(listLength);
+        itsLiveOnEntrySet = new DataFlowBitSet(listLength);
+        itsLiveOnExitSet = new DataFlowBitSet(listLength);
+        for (int i = itsStartNodeIndex; i <= itsEndNodeIndex; i++) {
+            Node n = statementNodes[i];
+            lookForVariableAccess(fn, n);
+        }
+        itsNotDefSet.not();         // truth in advertising
+    }
+
+    /*
+        the liveOnEntry of each successor is the liveOnExit for this block.
+        The liveOnEntry for this block is -
+        liveOnEntry = liveOnExit - defsInThisBlock + useBeforeDefsInThisBlock
+
+    */
+    private boolean doReachedUseDataFlow()
+    {
+        itsLiveOnExitSet.clear();
+        if (itsSuccessors != null)
+            for (int i = 0; i < itsSuccessors.length; i++)
+                itsLiveOnExitSet.or(itsSuccessors[i].itsLiveOnEntrySet);
+        return itsLiveOnEntrySet.df2(itsLiveOnExitSet,
+                                            itsUseBeforeDefSet, itsNotDefSet);
+    }
+
+    /*
+        the type of an expression is relatively unknown. Cases we can be sure
+        about are -
+            Literals,
+            Arithmetic operations - always return a Number
+    */
+    private static int findExpressionType(OptFunctionNode fn, Node n,
+                                          int[] varTypes)
+    {
+        switch (n.getType()) {
+          case Token.NUMBER :
+              return Optimizer.NumberType;
+
+          case Token.CALL :
+          case Token.NEW :
+          case Token.REF_CALL :
+              return Optimizer.AnyType;
+
+          case Token.GETELEM :
+             return Optimizer.AnyType;
+
+          case Token.GETVAR :
+              return varTypes[fn.getVarIndex(n)];
+
+          case Token.INC :
+          case Token.DEC :
+          case Token.DIV:
+          case Token.MOD:
+          case Token.BITOR:
+          case Token.BITXOR:
+          case Token.BITAND:
+          case Token.LSH:
+          case Token.RSH:
+          case Token.URSH:
+          case Token.SUB :
+              return Optimizer.NumberType;
+          
+          case Token.ARRAYLIT:
+          case Token.OBJECTLIT:
+              return Optimizer.AnyType; // XXX: actually, we know it's not
+                                        // number, but no type yet for that
+
+          case Token.ADD : {
+              // if the lhs & rhs are known to be numbers, we can be sure that's
+              // the result, otherwise it could be a string.
+              Node child = n.getFirstChild();
+              int lType = findExpressionType(fn, child, varTypes);
+              int rType = findExpressionType(fn, child.getNext(), varTypes);
+              return lType | rType;    // we're not distinguishing strings yet
+          }
+        }
+
+        Node child = n.getFirstChild();
+        if (child == null) {
+            return Optimizer.AnyType;
+        } else {
+            int result = Optimizer.NoType;
+            while (child != null) {
+                result |= findExpressionType(fn, child, varTypes);
+                child = child.getNext();
+            }
+            return result;
+        }
+    }
+
+    private static boolean findDefPoints(OptFunctionNode fn, Node n,
+                                         int[] varTypes)
+    {
+        boolean result = false;
+        Node child = n.getFirstChild();
+        switch (n.getType()) {
+          default :
+            while (child != null) {
+                result |= findDefPoints(fn, child, varTypes);
+                child = child.getNext();
+            }
+            break;
+          case Token.DEC :
+          case Token.INC :
+            if (child.getType() == Token.GETVAR) {
+                // theVar is a Number now
+                int i = fn.getVarIndex(child);
+                result |= assignType(varTypes, i, Optimizer.NumberType);
+            }
+            break;
+          case Token.SETPROP :
+          case Token.SETPROP_OP :
+            if (child.getType() == Token.GETVAR) {
+                int i = fn.getVarIndex(child);
+                assignType(varTypes, i, Optimizer.AnyType);
+            }
+            while (child != null) {
+                result |= findDefPoints(fn, child, varTypes);
+                child = child.getNext();
+            }
+            break;
+          case Token.SETVAR : {
+            Node rValue = child.getNext();
+            int theType = findExpressionType(fn, rValue, varTypes);
+            int i = fn.getVarIndex(n);
+            result |= assignType(varTypes, i, theType);
+            break;
+          }
+        }
+        return result;
+    }
+
+    private boolean doTypeFlow(OptFunctionNode fn, Node[] statementNodes,
+                               int[] varTypes)
+    {
+        boolean changed = false;
+
+        for (int i = itsStartNodeIndex; i <= itsEndNodeIndex; i++) {
+            Node n = statementNodes[i];
+            if (n != null)
+                changed |= findDefPoints(fn, n, varTypes);
+        }
+
+        return changed;
+    }
+
+    private void printLiveOnEntrySet(OptFunctionNode fn)
+    {
+        if (DEBUG) {
+            for (int i = 0; i < fn.getVarCount(); i++) {
+                String name = fn.fnode.getParamOrVarName(i);
+                if (itsUseBeforeDefSet.test(i))
+                    System.out.println(name + " is used before def'd");
+                if (itsNotDefSet.test(i))
+                    System.out.println(name + " is not def'd");
+                if (itsLiveOnEntrySet.test(i))
+                    System.out.println(name + " is live on entry");
+                if (itsLiveOnExitSet.test(i))
+                    System.out.println(name + " is live on exit");
+            }
+        }
+    }
+
+        // all the Blocks that come immediately after this
+    private Block[] itsSuccessors;
+        // all the Blocks that come immediately before this
+    private Block[] itsPredecessors;
+
+    private int itsStartNodeIndex;       // the Node at the start of the block
+    private int itsEndNodeIndex;         // the Node at the end of the block
+
+    private int itsBlockID;               // a unique index for each block
+
+// reaching def bit sets -
+    private DataFlowBitSet itsLiveOnEntrySet;
+    private DataFlowBitSet itsLiveOnExitSet;
+    private DataFlowBitSet itsUseBeforeDefSet;
+    private DataFlowBitSet itsNotDefSet;
+
+    static final boolean DEBUG = false;
+    private static int debug_blockCount;
+
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/ClassCompiler.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/ClassCompiler.java
new file mode 100644
index 0000000..4a69c6a
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/ClassCompiler.java
@@ -0,0 +1,214 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.optimizer;
+
+import org.mozilla.javascript.*;
+
+/**
+ * Generates class files from script sources.
+ *
+ * since 1.5 Release 5
+ * @author Igor Bukanov
+ */
+
+public class ClassCompiler
+{
+    /**
+     * Construct ClassCompiler that uses the specified compiler environment
+     * when generating classes.
+     */
+    public ClassCompiler(CompilerEnvirons compilerEnv)
+    {
+        if (compilerEnv == null) throw new IllegalArgumentException();
+        this.compilerEnv = compilerEnv;
+        this.mainMethodClassName = Codegen.DEFAULT_MAIN_METHOD_CLASS;
+    }
+
+    /**
+     * Set the class name to use for main method implementation.
+     * The class must have a method matching
+     * <tt>public static void main(Script sc, String[] args)</tt>, it will be
+     * called when <tt>main(String[] args)</tt> is called in the generated
+     * class. The class name should be fully qulified name and include the
+     * package name like in <tt>org.foo.Bar<tt>.
+     */
+    public void setMainMethodClass(String className)
+    {
+        // XXX Should this check for a valid class name?
+        mainMethodClassName = className;
+    }
+
+    /**
+     * Get the name of the class for main method implementation.
+     * @see #setMainMethodClass(String)
+     */
+    public String getMainMethodClass()
+    {
+        return mainMethodClassName;
+    }
+
+    /**
+     * Get the compiler environment the compiler uses.
+     */
+    public CompilerEnvirons getCompilerEnv()
+    {
+        return compilerEnv;
+    }
+
+    /**
+     * Get the class that the generated target will extend.
+     */
+    public Class getTargetExtends()
+    {
+        return targetExtends;
+    }
+
+    /**
+     * Set the class that the generated target will extend.
+     *
+     * @param extendsClass the class it extends
+     */
+    public void setTargetExtends(Class extendsClass)
+    {
+        targetExtends = extendsClass;
+    }
+
+    /**
+     * Get the interfaces that the generated target will implement.
+     */
+    public Class[] getTargetImplements()
+    {
+        return targetImplements == null ? null : (Class[])targetImplements.clone();
+    }
+
+    /**
+     * Set the interfaces that the generated target will implement.
+     *
+     * @param implementsClasses an array of Class objects, one for each
+     *                          interface the target will extend
+     */
+    public void setTargetImplements(Class[] implementsClasses)
+    {
+        targetImplements = implementsClasses == null ? null : (Class[])implementsClasses.clone();
+    }
+
+    /**
+     * Build class name for a auxiliary class generated by compiler.
+     * If the compiler needs to generate extra classes beyond the main class,
+     * it will call this function to build the auxiliary class name.
+     * The default implementation simply appends auxMarker to mainClassName
+     * but this can be overridden.
+     */
+    protected String makeAuxiliaryClassName(String mainClassName,
+                                            String auxMarker)
+    {
+        return mainClassName+auxMarker;
+    }
+
+    /**
+     * Compile JavaScript source into one or more Java class files.
+     * The first compiled class will have name mainClassName.
+     * If the results of {@link #getTargetExtends()} or
+     * {@link #getTargetImplements()} are not null, then the first compiled
+     * class will extend the specified super class and implement
+     * specified interfaces.
+     *
+     * @return array where elements with even indexes specifies class name
+     *         and the following odd index gives class file body as byte[]
+     *         array. The initial element of the array always holds
+     *         mainClassName and array[1] holds its byte code.
+     */
+    public Object[] compileToClassFiles(String source,
+                                        String sourceLocation,
+                                        int lineno,
+                                        String mainClassName)
+    {
+	/*APPJET*/
+        Parser p =
+	    InformativeParser.makeParser(compilerEnv,
+					 compilerEnv.getErrorReporter());
+        ScriptOrFnNode tree = p.parse(source, sourceLocation, lineno);
+        String encodedSource = p.getEncodedSource();
+
+        Class superClass = getTargetExtends();
+        Class[] interfaces = getTargetImplements();
+        String scriptClassName;
+        boolean isPrimary = (interfaces == null && superClass == null);
+        if (isPrimary) {
+            scriptClassName = mainClassName;
+        } else {
+            scriptClassName = makeAuxiliaryClassName(mainClassName, "1");
+        }
+
+        Codegen codegen = new Codegen();
+        codegen.setMainMethodClass(mainMethodClassName);
+        byte[] scriptClassBytes
+            = codegen.compileToClassFile(compilerEnv, scriptClassName,
+                                         tree, encodedSource,
+                                         false);
+
+        if (isPrimary) {
+            return new Object[] { scriptClassName, scriptClassBytes };
+        }
+        int functionCount = tree.getFunctionCount();
+        ObjToIntMap functionNames = new ObjToIntMap(functionCount);
+        for (int i = 0; i != functionCount; ++i) {
+            FunctionNode ofn = tree.getFunctionNode(i);
+            String name = ofn.getFunctionName();
+            if (name != null && name.length() != 0) {
+                functionNames.put(name, ofn.getParamCount());
+            }
+        }
+        if (superClass == null) {
+            superClass = ScriptRuntime.ObjectClass;
+        }
+        byte[] mainClassBytes
+            = JavaAdapter.createAdapterCode(
+                functionNames, mainClassName,
+                superClass, interfaces, scriptClassName);
+
+        return new Object[] { mainClassName, mainClassBytes,
+                              scriptClassName, scriptClassBytes };
+    }
+
+    private String mainMethodClassName;
+    private CompilerEnvirons compilerEnv;
+    private Class targetExtends;
+    private Class[] targetImplements;
+
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Codegen.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Codegen.java
new file mode 100644
index 0000000..64952bf
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Codegen.java
@@ -0,0 +1,5031 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Kemal Bayram
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Roger Lawrence
+ *   Andi Vajda
+ *   Hannes Wallnoefer
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+package org.mozilla.javascript.optimizer;
+
+import org.mozilla.javascript.*;
+import org.mozilla.classfile.*;
+import java.util.*;
+import java.lang.reflect.Constructor;
+import java.util.Hashtable;
+
+/**
+ * This class generates code for a given IR tree.
+ *
+ * @author Norris Boyd
+ * @author Roger Lawrence
+ */
+
+public class Codegen implements Evaluator
+{
+    public void captureStackInfo(RhinoException ex) {
+        throw new UnsupportedOperationException();
+    }
+    
+    public String getSourcePositionFromStack(Context cx, int[] linep) {
+        throw new UnsupportedOperationException();
+    }
+
+    public String getPatchedStack(RhinoException ex, String nativeStackTrace) {
+        throw new UnsupportedOperationException();
+    }
+
+    public List getScriptStack(RhinoException ex) {
+        throw new UnsupportedOperationException();
+    }
+
+    public void setEvalScriptFlag(Script script) {
+        throw new UnsupportedOperationException();
+    }
+
+    public Object compile(CompilerEnvirons compilerEnv,
+                          ScriptOrFnNode tree,
+                          String encodedSource,
+                          boolean returnFunction)
+    {
+        int serial;
+        synchronized (globalLock) {
+            serial = ++globalSerialClassCounter;
+        }
+        String mainClassName = "org.mozilla.javascript.gen.c"+serial;
+
+        byte[] mainClassBytes = compileToClassFile(compilerEnv, mainClassName,
+                                                   tree, encodedSource,
+                                                   returnFunction);
+
+        return new Object[] { mainClassName, mainClassBytes };
+    }
+
+    public Script createScriptObject(Object bytecode,
+                                     Object staticSecurityDomain)
+    {
+        Class cl = defineClass(bytecode, staticSecurityDomain);
+
+        Script script;
+        try {
+            script = (Script)cl.newInstance();
+        } catch (Exception ex) {
+            throw new RuntimeException
+                ("Unable to instantiate compiled class:"+ex.toString());
+        }
+        return script;
+    }
+
+    public Function createFunctionObject(Context cx, Scriptable scope,
+                                         Object bytecode,
+                                         Object staticSecurityDomain)
+    {
+        Class cl = defineClass(bytecode, staticSecurityDomain);
+
+        NativeFunction f;
+        try {
+            Constructor ctor = cl.getConstructors()[0];
+            Object[] initArgs = { scope, cx, new Integer(0) };
+            f = (NativeFunction)ctor.newInstance(initArgs);
+        } catch (Exception ex) {
+            throw new RuntimeException
+                ("Unable to instantiate compiled class:"+ex.toString());
+        }
+        return f;
+    }
+
+    private Class defineClass(Object bytecode,
+                              Object staticSecurityDomain)
+    {
+        Object[] nameBytesPair = (Object[])bytecode;
+        String className = (String)nameBytesPair[0];
+        byte[] classBytes = (byte[])nameBytesPair[1];
+
+        // The generated classes in this case refer only to Rhino classes
+        // which must be accessible through this class loader
+        ClassLoader rhinoLoader = getClass().getClassLoader();
+        GeneratedClassLoader loader;
+        loader = SecurityController.createLoader(rhinoLoader,
+                                                 staticSecurityDomain);
+        Exception e;
+        try {
+            Class cl = loader.defineClass(className, classBytes);
+            loader.linkClass(cl);
+            return cl;
+        } catch (SecurityException x) {
+            e = x;
+        } catch (IllegalArgumentException x) {
+            e = x;
+        }
+        throw new RuntimeException("Malformed optimizer package " + e);
+    }
+
+    byte[] compileToClassFile(CompilerEnvirons compilerEnv,
+                              String mainClassName,
+                              ScriptOrFnNode scriptOrFn,
+                              String encodedSource,
+                              boolean returnFunction)
+    {
+        this.compilerEnv = compilerEnv;
+
+        transform(scriptOrFn);
+
+        if (Token.printTrees) {
+            /*APPJET*///System.out.println(scriptOrFn.toStringTree(scriptOrFn));
+        }
+
+        if (returnFunction) {
+            scriptOrFn = scriptOrFn.getFunctionNode(0);
+        }
+
+        initScriptOrFnNodesData(scriptOrFn);
+
+        this.mainClassName = mainClassName;
+        this.mainClassSignature
+            = ClassFileWriter.classNameToSignature(mainClassName);
+
+        try {
+            return generateCode(encodedSource);
+        } catch (ClassFileWriter.ClassFileFormatException e) {
+            throw reportClassFileFormatException(scriptOrFn, e.getMessage());
+        }
+    }
+    
+    private RuntimeException reportClassFileFormatException(
+        ScriptOrFnNode scriptOrFn,
+        String message)
+    {
+        String msg = scriptOrFn instanceof FunctionNode
+        ? ScriptRuntime.getMessage2("msg.while.compiling.fn",
+            ((FunctionNode)scriptOrFn).getFunctionName(), message)
+        : ScriptRuntime.getMessage1("msg.while.compiling.script", message);
+        return Context.reportRuntimeError(msg, scriptOrFn.getSourceName(),
+            scriptOrFn.getLineno(), null, 0);
+    }
+
+    private void transform(ScriptOrFnNode tree)
+    {
+        initOptFunctions_r(tree);
+
+        int optLevel = compilerEnv.getOptimizationLevel();
+
+        Hashtable possibleDirectCalls = null;
+        if (optLevel > 0) {
+           /*
+            * Collect all of the contained functions into a hashtable
+            * so that the call optimizer can access the class name & parameter
+            * count for any call it encounters
+            */
+            if (tree.getType() == Token.SCRIPT) {
+                int functionCount = tree.getFunctionCount();
+                for (int i = 0; i != functionCount; ++i) {
+                    OptFunctionNode ofn = OptFunctionNode.get(tree, i);
+                    if (ofn.fnode.getFunctionType()
+                        == FunctionNode.FUNCTION_STATEMENT)
+                    {
+                        String name = ofn.fnode.getFunctionName();
+                        if (name.length() != 0) {
+                            if (possibleDirectCalls == null) {
+                                possibleDirectCalls = new Hashtable();
+                            }
+                            possibleDirectCalls.put(name, ofn);
+                        }
+                    }
+                }
+            }
+        }
+
+        if (possibleDirectCalls != null) {
+            directCallTargets = new ObjArray();
+        }
+
+        OptTransformer ot = new OptTransformer(possibleDirectCalls,
+                                               directCallTargets);
+        ot.transform(tree);
+
+        if (optLevel > 0) {
+            (new Optimizer()).optimize(tree);
+        }
+    }
+
+    private static void initOptFunctions_r(ScriptOrFnNode scriptOrFn)
+    {
+        for (int i = 0, N = scriptOrFn.getFunctionCount(); i != N; ++i) {
+            FunctionNode fn = scriptOrFn.getFunctionNode(i);
+            new OptFunctionNode(fn);
+            initOptFunctions_r(fn);
+        }
+    }
+
+    private void initScriptOrFnNodesData(ScriptOrFnNode scriptOrFn)
+    {
+        ObjArray x = new ObjArray();
+        collectScriptOrFnNodes_r(scriptOrFn, x);
+
+        int count = x.size();
+        scriptOrFnNodes = new ScriptOrFnNode[count];
+        x.toArray(scriptOrFnNodes);
+
+        scriptOrFnIndexes = new ObjToIntMap(count);
+        for (int i = 0; i != count; ++i) {
+            scriptOrFnIndexes.put(scriptOrFnNodes[i], i);
+        }
+    }
+
+    private static void collectScriptOrFnNodes_r(ScriptOrFnNode n,
+                                                 ObjArray x)
+    {
+        x.add(n);
+        int nestedCount = n.getFunctionCount();
+        for (int i = 0; i != nestedCount; ++i) {
+            collectScriptOrFnNodes_r(n.getFunctionNode(i), x);
+        }
+    }
+
+    private byte[] generateCode(String encodedSource)
+    {
+        boolean hasScript = (scriptOrFnNodes[0].getType() == Token.SCRIPT);
+        boolean hasFunctions = (scriptOrFnNodes.length > 1 || !hasScript);
+
+        String sourceFile = null;
+        if (compilerEnv.isGenerateDebugInfo()) {
+            sourceFile = scriptOrFnNodes[0].getSourceName();
+        }
+
+        ClassFileWriter cfw = new ClassFileWriter(mainClassName,
+                                                  SUPER_CLASS_NAME,
+                                                  sourceFile);
+        cfw.addField(ID_FIELD_NAME, "I",
+                     ClassFileWriter.ACC_PRIVATE);
+        cfw.addField(DIRECT_CALL_PARENT_FIELD, mainClassSignature,
+                     ClassFileWriter.ACC_PRIVATE);
+        cfw.addField(REGEXP_ARRAY_FIELD_NAME, REGEXP_ARRAY_FIELD_TYPE,
+                     ClassFileWriter.ACC_PRIVATE);
+
+        if (hasFunctions) {
+            generateFunctionConstructor(cfw);
+        }
+
+        if (hasScript) {
+            cfw.addInterface("org/mozilla/javascript/Script");
+            generateScriptCtor(cfw);
+            generateMain(cfw);
+            generateExecute(cfw);
+        }
+
+        generateCallMethod(cfw);
+        generateResumeGenerator(cfw);
+
+        generateNativeFunctionOverrides(cfw, encodedSource);
+
+        int count = scriptOrFnNodes.length;
+        for (int i = 0; i != count; ++i) {
+            ScriptOrFnNode n = scriptOrFnNodes[i];
+
+            BodyCodegen bodygen = new BodyCodegen();
+            bodygen.cfw = cfw;
+            bodygen.codegen = this;
+            bodygen.compilerEnv = compilerEnv;
+            bodygen.scriptOrFn = n;
+            bodygen.scriptOrFnIndex = i;
+
+            try {
+                bodygen.generateBodyCode();
+            } catch (ClassFileWriter.ClassFileFormatException e) {
+                throw reportClassFileFormatException(n, e.getMessage());
+            }
+
+            if (n.getType() == Token.FUNCTION) {
+                OptFunctionNode ofn = OptFunctionNode.get(n);
+                generateFunctionInit(cfw, ofn);
+                if (ofn.isTargetOfDirectCall()) {
+                    emitDirectConstructor(cfw, ofn);
+                }
+            }
+        }
+
+        if (directCallTargets != null) {
+            int N = directCallTargets.size();
+            for (int j = 0; j != N; ++j) {
+                cfw.addField(getDirectTargetFieldName(j),
+                             mainClassSignature,
+                             ClassFileWriter.ACC_PRIVATE);
+            }
+        }
+
+        emitRegExpInit(cfw);
+        emitConstantDudeInitializers(cfw);
+
+        return cfw.toByteArray();
+    }
+
+    private void emitDirectConstructor(ClassFileWriter cfw,
+                                       OptFunctionNode ofn)
+    {
+/*
+    we generate ..
+        Scriptable directConstruct(<directCallArgs>) {
+            Scriptable newInstance = createObject(cx, scope);
+            Object val = <body-name>(cx, scope, newInstance, <directCallArgs>);
+            if (val instanceof Scriptable) {
+                return (Scriptable) val;
+            }
+            return newInstance;
+        }
+*/
+        cfw.startMethod(getDirectCtorName(ofn.fnode),
+                        getBodyMethodSignature(ofn.fnode),
+                        (short)(ClassFileWriter.ACC_STATIC
+                                | ClassFileWriter.ACC_PRIVATE));
+
+        int argCount = ofn.fnode.getParamCount();
+        int firstLocal = (4 + argCount * 3) + 1;
+
+        cfw.addALoad(0); // this
+        cfw.addALoad(1); // cx
+        cfw.addALoad(2); // scope
+        cfw.addInvoke(ByteCode.INVOKEVIRTUAL,
+                      "org/mozilla/javascript/BaseFunction",
+                      "createObject",
+                      "(Lorg/mozilla/javascript/Context;"
+                      +"Lorg/mozilla/javascript/Scriptable;"
+                      +")Lorg/mozilla/javascript/Scriptable;");
+        cfw.addAStore(firstLocal);
+
+        cfw.addALoad(0);
+        cfw.addALoad(1);
+        cfw.addALoad(2);
+        cfw.addALoad(firstLocal);
+        for (int i = 0; i < argCount; i++) {
+            cfw.addALoad(4 + (i * 3));
+            cfw.addDLoad(5 + (i * 3));
+        }
+        cfw.addALoad(4 + argCount * 3);
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      mainClassName,
+                      getBodyMethodName(ofn.fnode),
+                      getBodyMethodSignature(ofn.fnode));
+        int exitLabel = cfw.acquireLabel();
+        cfw.add(ByteCode.DUP); // make a copy of direct call result
+        cfw.add(ByteCode.INSTANCEOF, "org/mozilla/javascript/Scriptable");
+        cfw.add(ByteCode.IFEQ, exitLabel);
+        // cast direct call result
+        cfw.add(ByteCode.CHECKCAST, "org/mozilla/javascript/Scriptable");
+        cfw.add(ByteCode.ARETURN);
+        cfw.markLabel(exitLabel);
+
+        cfw.addALoad(firstLocal);
+        cfw.add(ByteCode.ARETURN);
+
+        cfw.stopMethod((short)(firstLocal + 1));
+    }
+
+    static boolean isGenerator(ScriptOrFnNode node)
+    {
+        return (node.getType() == Token.FUNCTION ) &&
+                ((FunctionNode)node).isGenerator();
+    }
+
+    // How dispatch to generators works:
+    // Two methods are generated corresponding to a user-written generator.
+    // One of these creates a generator object (NativeGenerator), which is
+    // returned to the user. The other method contains all of the body code
+    // of the generator.
+    // When a user calls a generator, the call() method dispatches control to
+    // to the method that creates the NativeGenerator object. Subsequently when
+    // the user invokes .next(), .send() or any such method on the generator
+    // object, the resumeGenerator() below dispatches the call to the
+    // method corresponding to the generator body. As a matter of convention
+    // the generator body is given the name of the generator activation function
+    // appended by "_gen".
+    private void generateResumeGenerator(ClassFileWriter cfw)
+    {
+        boolean hasGenerators = false;
+        for (int i=0; i < scriptOrFnNodes.length; i++) {
+            if (isGenerator(scriptOrFnNodes[i]))
+            	hasGenerators = true;
+        }
+
+        // if there are no generators defined, we don't implement a
+        // resumeGenerator(). The base class provides a default implementation. 
+        if (!hasGenerators)
+            return;
+
+        cfw.startMethod("resumeGenerator",
+                        "(Lorg/mozilla/javascript/Context;" +
+                        "Lorg/mozilla/javascript/Scriptable;" +
+                        "ILjava/lang/Object;" +
+                        "Ljava/lang/Object;)Ljava/lang/Object;",
+                        (short)(ClassFileWriter.ACC_PUBLIC
+                                | ClassFileWriter.ACC_FINAL));
+
+        // load arguments for dispatch to the corresponding *_gen method 
+        cfw.addALoad(0);
+        cfw.addALoad(1);
+        cfw.addALoad(2);
+        cfw.addALoad(4);
+        cfw.addALoad(5);
+        cfw.addILoad(3);
+
+        cfw.addLoadThis();
+        cfw.add(ByteCode.GETFIELD, cfw.getClassName(), ID_FIELD_NAME, "I");
+
+        int startSwitch = cfw.addTableSwitch(0, scriptOrFnNodes.length - 1);
+        cfw.markTableSwitchDefault(startSwitch);
+        int endlabel = cfw.acquireLabel();
+
+        for (int i = 0; i < scriptOrFnNodes.length; i++) {
+            ScriptOrFnNode n = scriptOrFnNodes[i];
+            cfw.markTableSwitchCase(startSwitch, i, (short)6);
+            if (isGenerator(n)) {
+                String type = "(" +
+                              mainClassSignature +
+                              "Lorg/mozilla/javascript/Context;" +
+                              "Lorg/mozilla/javascript/Scriptable;" +
+                              "Ljava/lang/Object;" +
+                              "Ljava/lang/Object;I)Ljava/lang/Object;";
+                cfw.addInvoke(ByteCode.INVOKESTATIC,
+                              mainClassName,
+                              getBodyMethodName(n) + "_gen",
+                              type);
+                cfw.add(ByteCode.ARETURN);
+            } else {
+                cfw.add(ByteCode.GOTO, endlabel);
+            }
+        }
+
+        cfw.markLabel(endlabel);
+        pushUndefined(cfw);
+        cfw.add(ByteCode.ARETURN);
+
+
+        // this method uses as many locals as there are arguments (hence 6)
+        cfw.stopMethod((short)6);
+    }
+
+    private void generateCallMethod(ClassFileWriter cfw)
+    {
+        cfw.startMethod("call",
+                        "(Lorg/mozilla/javascript/Context;" +
+                        "Lorg/mozilla/javascript/Scriptable;" +
+                        "Lorg/mozilla/javascript/Scriptable;" +
+                        "[Ljava/lang/Object;)Ljava/lang/Object;",
+                        (short)(ClassFileWriter.ACC_PUBLIC
+                                | ClassFileWriter.ACC_FINAL));
+
+        // Generate code for:
+        // if (!ScriptRuntime.hasTopCall(cx)) {
+        //     return ScriptRuntime.doTopCall(this, cx, scope, thisObj, args);
+        // }
+
+        int nonTopCallLabel = cfw.acquireLabel();
+        cfw.addALoad(1); //cx
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/ScriptRuntime",
+                      "hasTopCall",
+                      "(Lorg/mozilla/javascript/Context;"
+                      +")Z");
+        cfw.add(ByteCode.IFNE, nonTopCallLabel);
+        cfw.addALoad(0);
+        cfw.addALoad(1);
+        cfw.addALoad(2);
+        cfw.addALoad(3);
+        cfw.addALoad(4);
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/ScriptRuntime",
+                      "doTopCall",
+                      "(Lorg/mozilla/javascript/Callable;"
+                      +"Lorg/mozilla/javascript/Context;"
+                      +"Lorg/mozilla/javascript/Scriptable;"
+                      +"Lorg/mozilla/javascript/Scriptable;"
+                      +"[Ljava/lang/Object;"
+                      +")Ljava/lang/Object;");
+        cfw.add(ByteCode.ARETURN);
+        cfw.markLabel(nonTopCallLabel);
+
+        // Now generate switch to call the real methods
+        cfw.addALoad(0);
+        cfw.addALoad(1);
+        cfw.addALoad(2);
+        cfw.addALoad(3);
+        cfw.addALoad(4);
+
+        int end = scriptOrFnNodes.length;
+        boolean generateSwitch = (2 <= end);
+
+        int switchStart = 0;
+        int switchStackTop = 0;
+        if (generateSwitch) {
+            cfw.addLoadThis();
+            cfw.add(ByteCode.GETFIELD, cfw.getClassName(), ID_FIELD_NAME, "I");
+            // do switch from (1,  end - 1) mapping 0 to
+            // the default case
+            switchStart = cfw.addTableSwitch(1, end - 1);
+        }
+
+        for (int i = 0; i != end; ++i) {
+            ScriptOrFnNode n = scriptOrFnNodes[i];
+            if (generateSwitch) {
+                if (i == 0) {
+                    cfw.markTableSwitchDefault(switchStart);
+                    switchStackTop = cfw.getStackTop();
+                } else {
+                    cfw.markTableSwitchCase(switchStart, i - 1,
+                                            switchStackTop);
+                }
+            }
+            if (n.getType() == Token.FUNCTION) {
+                OptFunctionNode ofn = OptFunctionNode.get(n);
+                if (ofn.isTargetOfDirectCall()) {
+                    int pcount = ofn.fnode.getParamCount();
+                    if (pcount != 0) {
+                        // loop invariant:
+                        // stack top == arguments array from addALoad4()
+                        for (int p = 0; p != pcount; ++p) {
+                            cfw.add(ByteCode.ARRAYLENGTH);
+                            cfw.addPush(p);
+                            int undefArg = cfw.acquireLabel();
+                            int beyond = cfw.acquireLabel();
+                            cfw.add(ByteCode.IF_ICMPLE, undefArg);
+                            // get array[p]
+                            cfw.addALoad(4);
+                            cfw.addPush(p);
+                            cfw.add(ByteCode.AALOAD);
+                            cfw.add(ByteCode.GOTO, beyond);
+                            cfw.markLabel(undefArg);
+                            pushUndefined(cfw);
+                            cfw.markLabel(beyond);
+                            // Only one push
+                            cfw.adjustStackTop(-1);
+                            cfw.addPush(0.0);
+                            // restore invariant
+                            cfw.addALoad(4);
+                        }
+                    }
+                }
+            }
+            cfw.addInvoke(ByteCode.INVOKESTATIC,
+                          mainClassName,
+                          getBodyMethodName(n),
+                          getBodyMethodSignature(n));
+            cfw.add(ByteCode.ARETURN);
+        }
+        cfw.stopMethod((short)5);
+        // 5: this, cx, scope, js this, args[]
+    }
+
+    private void generateMain(ClassFileWriter cfw)
+    {
+        cfw.startMethod("main", "([Ljava/lang/String;)V",
+                        (short)(ClassFileWriter.ACC_PUBLIC
+                                | ClassFileWriter.ACC_STATIC));
+
+        // load new ScriptImpl()
+        cfw.add(ByteCode.NEW, cfw.getClassName());
+        cfw.add(ByteCode.DUP);
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, cfw.getClassName(),
+                      "<init>", "()V");
+         // load 'args'
+        cfw.add(ByteCode.ALOAD_0);
+        // Call mainMethodClass.main(Script script, String[] args)
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      mainMethodClass,
+                      "main",
+                      "(Lorg/mozilla/javascript/Script;[Ljava/lang/String;)V");
+        cfw.add(ByteCode.RETURN);
+        // 1 = String[] args
+        cfw.stopMethod((short)1);
+    }
+
+    private void generateExecute(ClassFileWriter cfw)
+    {
+        cfw.startMethod("exec",
+                        "(Lorg/mozilla/javascript/Context;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +")Ljava/lang/Object;",
+                        (short)(ClassFileWriter.ACC_PUBLIC
+                                | ClassFileWriter.ACC_FINAL));
+
+        final int CONTEXT_ARG = 1;
+        final int SCOPE_ARG = 2;
+
+        cfw.addLoadThis();
+        cfw.addALoad(CONTEXT_ARG);
+        cfw.addALoad(SCOPE_ARG);
+        cfw.add(ByteCode.DUP);
+        cfw.add(ByteCode.ACONST_NULL);
+        cfw.addInvoke(ByteCode.INVOKEVIRTUAL,
+                      cfw.getClassName(),
+                      "call",
+                      "(Lorg/mozilla/javascript/Context;"
+                      +"Lorg/mozilla/javascript/Scriptable;"
+                      +"Lorg/mozilla/javascript/Scriptable;"
+                      +"[Ljava/lang/Object;"
+                      +")Ljava/lang/Object;");
+
+        cfw.add(ByteCode.ARETURN);
+        // 3 = this + context + scope
+        cfw.stopMethod((short)3);
+    }
+
+    private void generateScriptCtor(ClassFileWriter cfw)
+    {
+        cfw.startMethod("<init>", "()V", ClassFileWriter.ACC_PUBLIC);
+
+        cfw.addLoadThis();
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, SUPER_CLASS_NAME,
+                      "<init>", "()V");
+        // set id to 0
+        cfw.addLoadThis();
+        cfw.addPush(0);
+        cfw.add(ByteCode.PUTFIELD, cfw.getClassName(), ID_FIELD_NAME, "I");
+
+        cfw.add(ByteCode.RETURN);
+        // 1 parameter = this
+        cfw.stopMethod((short)1);
+    }
+
+    private void generateFunctionConstructor(ClassFileWriter cfw)
+    {
+        final int SCOPE_ARG = 1;
+        final int CONTEXT_ARG = 2;
+        final int ID_ARG = 3;
+
+        cfw.startMethod("<init>", FUNCTION_CONSTRUCTOR_SIGNATURE,
+                        ClassFileWriter.ACC_PUBLIC);
+        cfw.addALoad(0);
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, SUPER_CLASS_NAME,
+                      "<init>", "()V");
+
+        cfw.addLoadThis();
+        cfw.addILoad(ID_ARG);
+        cfw.add(ByteCode.PUTFIELD, cfw.getClassName(), ID_FIELD_NAME, "I");
+
+        cfw.addLoadThis();
+        cfw.addALoad(CONTEXT_ARG);
+        cfw.addALoad(SCOPE_ARG);
+
+        int start = (scriptOrFnNodes[0].getType() == Token.SCRIPT) ? 1 : 0;
+        int end = scriptOrFnNodes.length;
+        if (start == end) throw badTree();
+        boolean generateSwitch = (2 <= end - start);
+
+        int switchStart = 0;
+        int switchStackTop = 0;
+        if (generateSwitch) {
+            cfw.addILoad(ID_ARG);
+            // do switch from (start + 1,  end - 1) mapping start to
+            // the default case
+            switchStart = cfw.addTableSwitch(start + 1, end - 1);
+        }
+
+        for (int i = start; i != end; ++i) {
+            if (generateSwitch) {
+                if (i == start) {
+                    cfw.markTableSwitchDefault(switchStart);
+                    switchStackTop = cfw.getStackTop();
+                } else {
+                    cfw.markTableSwitchCase(switchStart, i - 1 - start,
+                                            switchStackTop);
+                }
+            }
+            OptFunctionNode ofn = OptFunctionNode.get(scriptOrFnNodes[i]);
+            cfw.addInvoke(ByteCode.INVOKEVIRTUAL,
+                          mainClassName,
+                          getFunctionInitMethodName(ofn),
+                          FUNCTION_INIT_SIGNATURE);
+            cfw.add(ByteCode.RETURN);
+        }
+
+        // 4 = this + scope + context + id
+        cfw.stopMethod((short)4);
+    }
+
+    private void generateFunctionInit(ClassFileWriter cfw,
+                                      OptFunctionNode ofn)
+    {
+        final int CONTEXT_ARG = 1;
+        final int SCOPE_ARG = 2;
+        cfw.startMethod(getFunctionInitMethodName(ofn),
+                        FUNCTION_INIT_SIGNATURE,
+                        (short)(ClassFileWriter.ACC_PRIVATE
+                                | ClassFileWriter.ACC_FINAL));
+
+        // Call NativeFunction.initScriptFunction
+        cfw.addLoadThis();
+        cfw.addALoad(CONTEXT_ARG);
+        cfw.addALoad(SCOPE_ARG);
+        cfw.addInvoke(ByteCode.INVOKEVIRTUAL,
+                      "org/mozilla/javascript/NativeFunction",
+                      "initScriptFunction",
+                      "(Lorg/mozilla/javascript/Context;"
+                      +"Lorg/mozilla/javascript/Scriptable;"
+                      +")V");
+
+        // precompile all regexp literals
+        int regexpCount = ofn.fnode.getRegexpCount();
+        if (regexpCount != 0) {
+            cfw.addLoadThis();
+            pushRegExpArray(cfw, ofn.fnode, CONTEXT_ARG, SCOPE_ARG);
+            cfw.add(ByteCode.PUTFIELD, mainClassName,
+                    REGEXP_ARRAY_FIELD_NAME, REGEXP_ARRAY_FIELD_TYPE);
+        }
+
+        cfw.add(ByteCode.RETURN);
+        // 3 = (scriptThis/functionRef) + scope + context
+        cfw.stopMethod((short)3);
+    }
+
+    private void generateNativeFunctionOverrides(ClassFileWriter cfw,
+                                                 String encodedSource)
+    {
+        // Override NativeFunction.getLanguageVersion() with
+        // public int getLanguageVersion() { return <version-constant>; }
+
+        cfw.startMethod("getLanguageVersion", "()I",
+                        ClassFileWriter.ACC_PUBLIC);
+
+        cfw.addPush(compilerEnv.getLanguageVersion());
+        cfw.add(ByteCode.IRETURN);
+
+        // 1: this and no argument or locals
+        cfw.stopMethod((short)1);
+
+        // The rest of NativeFunction overrides require specific code for each
+        // script/function id
+
+        final int Do_getFunctionName      = 0;
+        final int Do_getParamCount        = 1;
+        final int Do_getParamAndVarCount  = 2;
+        final int Do_getParamOrVarName    = 3;
+        final int Do_getEncodedSource     = 4;
+        final int Do_getParamOrVarConst   = 5;
+        final int SWITCH_COUNT            = 6;
+
+        for (int methodIndex = 0; methodIndex != SWITCH_COUNT; ++methodIndex) {
+            if (methodIndex == Do_getEncodedSource && encodedSource == null) {
+                continue;
+            }
+
+            // Generate:
+            //   prologue;
+            //   switch over function id to implement function-specific action
+            //   epilogue
+
+            short methodLocals;
+            switch (methodIndex) {
+              case Do_getFunctionName:
+                methodLocals = 1; // Only this
+                cfw.startMethod("getFunctionName", "()Ljava/lang/String;",
+                                ClassFileWriter.ACC_PUBLIC);
+                break;
+              case Do_getParamCount:
+                methodLocals = 1; // Only this
+                cfw.startMethod("getParamCount", "()I",
+                                ClassFileWriter.ACC_PUBLIC);
+                break;
+              case Do_getParamAndVarCount:
+                methodLocals = 1; // Only this
+                cfw.startMethod("getParamAndVarCount", "()I",
+                                ClassFileWriter.ACC_PUBLIC);
+                break;
+              case Do_getParamOrVarName:
+                methodLocals = 1 + 1; // this + paramOrVarIndex
+                cfw.startMethod("getParamOrVarName", "(I)Ljava/lang/String;",
+                                ClassFileWriter.ACC_PUBLIC);
+                break;
+              case Do_getParamOrVarConst:
+                methodLocals = 1 + 1 + 1; // this + paramOrVarName
+                cfw.startMethod("getParamOrVarConst", "(I)Z",
+                                ClassFileWriter.ACC_PUBLIC);
+                break;
+              case Do_getEncodedSource:
+                methodLocals = 1; // Only this
+                cfw.startMethod("getEncodedSource", "()Ljava/lang/String;",
+                                ClassFileWriter.ACC_PUBLIC);
+                cfw.addPush(encodedSource);
+                break;
+              default:
+                throw Kit.codeBug();
+            }
+
+            int count = scriptOrFnNodes.length;
+
+            int switchStart = 0;
+            int switchStackTop = 0;
+            if (count > 1) {
+                // Generate switch but only if there is more then one
+                // script/function
+                cfw.addLoadThis();
+                cfw.add(ByteCode.GETFIELD, cfw.getClassName(),
+                        ID_FIELD_NAME, "I");
+
+                // do switch from 1 .. count - 1 mapping 0 to the default case
+                switchStart = cfw.addTableSwitch(1, count - 1);
+            }
+
+            for (int i = 0; i != count; ++i) {
+                ScriptOrFnNode n = scriptOrFnNodes[i];
+                if (i == 0) {
+                    if (count > 1) {
+                        cfw.markTableSwitchDefault(switchStart);
+                        switchStackTop = cfw.getStackTop();
+                    }
+                } else {
+                    cfw.markTableSwitchCase(switchStart, i - 1,
+                                            switchStackTop);
+                }
+
+                // Impelemnet method-specific switch code
+                switch (methodIndex) {
+                  case Do_getFunctionName:
+                    // Push function name
+                    if (n.getType() == Token.SCRIPT) {
+                        cfw.addPush("");
+                    } else {
+                        String name = ((FunctionNode)n).getFunctionName();
+                        cfw.addPush(name);
+                    }
+                    cfw.add(ByteCode.ARETURN);
+                    break;
+
+                  case Do_getParamCount:
+                    // Push number of defined parameters
+                    cfw.addPush(n.getParamCount());
+                    cfw.add(ByteCode.IRETURN);
+                    break;
+
+                  case Do_getParamAndVarCount:
+                    // Push number of defined parameters and declared variables
+                    cfw.addPush(n.getParamAndVarCount());
+                    cfw.add(ByteCode.IRETURN);
+                    break;
+
+                  case Do_getParamOrVarName:
+                    // Push name of parameter using another switch
+                    // over paramAndVarCount
+                    int paramAndVarCount = n.getParamAndVarCount();
+                    if (paramAndVarCount == 0) {
+                        // The runtime should never call the method in this
+                        // case but to make bytecode verifier happy return null
+                        // as throwing execption takes more code
+                        cfw.add(ByteCode.ACONST_NULL);
+                        cfw.add(ByteCode.ARETURN);
+                    } else if (paramAndVarCount == 1) {
+                        // As above do not check for valid index but always
+                        // return the name of the first param
+                        cfw.addPush(n.getParamOrVarName(0));
+                        cfw.add(ByteCode.ARETURN);
+                    } else {
+                        // Do switch over getParamOrVarName
+                        cfw.addILoad(1); // param or var index
+                        // do switch from 1 .. paramAndVarCount - 1 mapping 0
+                        // to the default case
+                        int paramSwitchStart = cfw.addTableSwitch(
+                                                   1, paramAndVarCount - 1);
+                        for (int j = 0; j != paramAndVarCount; ++j) {
+                            if (cfw.getStackTop() != 0) Kit.codeBug();
+                            String s = n.getParamOrVarName(j);
+                            if (j == 0) {
+                                cfw.markTableSwitchDefault(paramSwitchStart);
+                            } else {
+                                cfw.markTableSwitchCase(paramSwitchStart, j - 1,
+                                                        0);
+                            }
+                            cfw.addPush(s);
+                            cfw.add(ByteCode.ARETURN);
+                        }
+                    }
+                    break;
+
+                    case Do_getParamOrVarConst:
+                        // Push name of parameter using another switch
+                        // over paramAndVarCount
+                        paramAndVarCount = n.getParamAndVarCount();
+                        boolean [] constness = n.getParamAndVarConst();
+                        if (paramAndVarCount == 0) {
+                            // The runtime should never call the method in this
+                            // case but to make bytecode verifier happy return null
+                            // as throwing execption takes more code
+                            cfw.add(ByteCode.ICONST_0);
+                            cfw.add(ByteCode.IRETURN);
+                        } else if (paramAndVarCount == 1) {
+                            // As above do not check for valid index but always
+                            // return the name of the first param
+                            cfw.addPush(constness[0]);
+                            cfw.add(ByteCode.IRETURN);
+                        } else {
+                            // Do switch over getParamOrVarName
+                            cfw.addILoad(1); // param or var index
+                            // do switch from 1 .. paramAndVarCount - 1 mapping 0
+                            // to the default case
+                            int paramSwitchStart = cfw.addTableSwitch(
+                                                       1, paramAndVarCount - 1);
+                            for (int j = 0; j != paramAndVarCount; ++j) {
+                                if (cfw.getStackTop() != 0) Kit.codeBug();
+                                if (j == 0) {
+                                    cfw.markTableSwitchDefault(paramSwitchStart);
+                                } else {
+                                    cfw.markTableSwitchCase(paramSwitchStart, j - 1,
+                                                            0);
+                                }
+                                cfw.addPush(constness[j]);
+                                cfw.add(ByteCode.IRETURN);
+                            }
+                        }
+                      break;
+
+                  case Do_getEncodedSource:
+                    // Push number encoded source start and end
+                    // to prepare for encodedSource.substring(start, end)
+                    cfw.addPush(n.getEncodedSourceStart());
+                    cfw.addPush(n.getEncodedSourceEnd());
+                    cfw.addInvoke(ByteCode.INVOKEVIRTUAL,
+                                  "java/lang/String",
+                                  "substring",
+                                  "(II)Ljava/lang/String;");
+                    cfw.add(ByteCode.ARETURN);
+                    break;
+
+                  default:
+                    throw Kit.codeBug();
+                }
+            }
+
+            cfw.stopMethod(methodLocals);
+        }
+    }
+
+    private void emitRegExpInit(ClassFileWriter cfw)
+    {
+        // precompile all regexp literals
+
+        int totalRegCount = 0;
+        for (int i = 0; i != scriptOrFnNodes.length; ++i) {
+            totalRegCount += scriptOrFnNodes[i].getRegexpCount();
+        }
+        if (totalRegCount == 0) {
+            return;
+        }
+
+        cfw.startMethod(REGEXP_INIT_METHOD_NAME, REGEXP_INIT_METHOD_SIGNATURE,
+            (short)(ClassFileWriter.ACC_STATIC | ClassFileWriter.ACC_PRIVATE
+                    | ClassFileWriter.ACC_SYNCHRONIZED));
+        cfw.addField("_reInitDone", "Z",
+                     (short)(ClassFileWriter.ACC_STATIC
+                             | ClassFileWriter.ACC_PRIVATE));
+        cfw.add(ByteCode.GETSTATIC, mainClassName, "_reInitDone", "Z");
+        int doInit = cfw.acquireLabel();
+        cfw.add(ByteCode.IFEQ, doInit);
+        cfw.add(ByteCode.RETURN);
+        cfw.markLabel(doInit);
+
+        for (int i = 0; i != scriptOrFnNodes.length; ++i) {
+            ScriptOrFnNode n = scriptOrFnNodes[i];
+            int regCount = n.getRegexpCount();
+            for (int j = 0; j != regCount; ++j) {
+                String reFieldName = getCompiledRegexpName(n, j);
+                String reFieldType = "Ljava/lang/Object;";
+                String reString = n.getRegexpString(j);
+                String reFlags = n.getRegexpFlags(j);
+                cfw.addField(reFieldName, reFieldType,
+                             (short)(ClassFileWriter.ACC_STATIC
+                                     | ClassFileWriter.ACC_PRIVATE));
+                cfw.addALoad(0); // proxy
+                cfw.addALoad(1); // context
+                cfw.addPush(reString);
+                if (reFlags == null) {
+                    cfw.add(ByteCode.ACONST_NULL);
+                } else {
+                    cfw.addPush(reFlags);
+                }
+		/*APPJET*/cfw.addLineNumberEntry((short)n.getRegexpLineno(j));
+                cfw.addInvoke(ByteCode.INVOKEINTERFACE,
+                              "org/mozilla/javascript/RegExpProxy",
+                              "compileRegExp",
+                              "(Lorg/mozilla/javascript/Context;"
+                              +"Ljava/lang/String;Ljava/lang/String;"
+                              +")Ljava/lang/Object;");
+                cfw.add(ByteCode.PUTSTATIC, mainClassName,
+                        reFieldName, reFieldType);
+            }
+        }
+
+        cfw.addPush(1);
+        cfw.add(ByteCode.PUTSTATIC, mainClassName, "_reInitDone", "Z");
+        cfw.add(ByteCode.RETURN);
+        cfw.stopMethod((short)2);
+    }
+
+    private void emitConstantDudeInitializers(ClassFileWriter cfw)
+    {
+        int N = itsConstantListSize;
+        if (N == 0)
+            return;
+
+        cfw.startMethod("<clinit>", "()V",
+            (short)(ClassFileWriter.ACC_STATIC | ClassFileWriter.ACC_FINAL));
+
+        double[] array = itsConstantList;
+        for (int i = 0; i != N; ++i) {
+            double num = array[i];
+            String constantName = "_k" + i;
+            String constantType = getStaticConstantWrapperType(num);
+            cfw.addField(constantName, constantType,
+                         (short)(ClassFileWriter.ACC_STATIC
+                                 | ClassFileWriter.ACC_PRIVATE));
+            int inum = (int)num;
+            if (inum == num) {
+                cfw.add(ByteCode.NEW, "java/lang/Integer");
+                cfw.add(ByteCode.DUP);
+                cfw.addPush(inum);
+                cfw.addInvoke(ByteCode.INVOKESPECIAL, "java/lang/Integer",
+                              "<init>", "(I)V");
+            } else {
+                cfw.addPush(num);
+                addDoubleWrap(cfw);
+            }
+            cfw.add(ByteCode.PUTSTATIC, mainClassName,
+                    constantName, constantType);
+        }
+
+        cfw.add(ByteCode.RETURN);
+        cfw.stopMethod((short)0);
+    }
+
+    void pushRegExpArray(ClassFileWriter cfw, ScriptOrFnNode n,
+                         int contextArg, int scopeArg)
+    {
+        int regexpCount = n.getRegexpCount();
+        if (regexpCount == 0) throw badTree();
+
+        cfw.addPush(regexpCount);
+        cfw.add(ByteCode.ANEWARRAY, "java/lang/Object");
+
+        cfw.addALoad(contextArg);
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/ScriptRuntime",
+                      "checkRegExpProxy",
+                      "(Lorg/mozilla/javascript/Context;"
+                      +")Lorg/mozilla/javascript/RegExpProxy;");
+        // Stack: proxy, array
+        cfw.add(ByteCode.DUP);
+        cfw.addALoad(contextArg);
+        cfw.addInvoke(ByteCode.INVOKESTATIC, mainClassName,
+                      REGEXP_INIT_METHOD_NAME, REGEXP_INIT_METHOD_SIGNATURE);
+        for (int i = 0; i != regexpCount; ++i) {
+            // Stack: proxy, array
+            cfw.add(ByteCode.DUP2);
+            cfw.addALoad(contextArg);
+            cfw.addALoad(scopeArg);
+            cfw.add(ByteCode.GETSTATIC, mainClassName,
+                    getCompiledRegexpName(n, i), "Ljava/lang/Object;");
+            // Stack: compiledRegExp, scope, cx, proxy, array, proxy, array
+            cfw.addInvoke(ByteCode.INVOKEINTERFACE,
+                          "org/mozilla/javascript/RegExpProxy",
+                          "wrapRegExp",
+                          "(Lorg/mozilla/javascript/Context;"
+                          +"Lorg/mozilla/javascript/Scriptable;"
+                          +"Ljava/lang/Object;"
+                          +")Lorg/mozilla/javascript/Scriptable;");
+            // Stack: wrappedRegExp, array, proxy, array
+            cfw.addPush(i);
+            cfw.add(ByteCode.SWAP);
+            cfw.add(ByteCode.AASTORE);
+            // Stack: proxy, array
+        }
+        // remove proxy
+        cfw.add(ByteCode.POP);
+    }
+
+    void pushNumberAsObject(ClassFileWriter cfw, double num)
+    {
+        if (num == 0.0) {
+            if (1 / num > 0) {
+                // +0.0
+                cfw.add(ByteCode.GETSTATIC,
+                        "org/mozilla/javascript/optimizer/OptRuntime",
+                        "zeroObj", "Ljava/lang/Double;");
+            } else {
+                cfw.addPush(num);
+                addDoubleWrap(cfw);
+            }
+
+        } else if (num == 1.0) {
+            cfw.add(ByteCode.GETSTATIC,
+                    "org/mozilla/javascript/optimizer/OptRuntime",
+                    "oneObj", "Ljava/lang/Double;");
+            return;
+
+        } else if (num == -1.0) {
+            cfw.add(ByteCode.GETSTATIC,
+                    "org/mozilla/javascript/optimizer/OptRuntime",
+                    "minusOneObj", "Ljava/lang/Double;");
+
+        } else if (num != num) {
+            cfw.add(ByteCode.GETSTATIC,
+                    "org/mozilla/javascript/ScriptRuntime",
+                    "NaNobj", "Ljava/lang/Double;");
+
+        } else if (itsConstantListSize >= 2000) {
+            // There appears to be a limit in the JVM on either the number
+            // of static fields in a class or the size of the class
+            // initializer. Either way, we can't have any more than 2000
+            // statically init'd constants.
+            cfw.addPush(num);
+            addDoubleWrap(cfw);
+
+        } else {
+            int N = itsConstantListSize;
+            int index = 0;
+            if (N == 0) {
+                itsConstantList = new double[64];
+            } else {
+                double[] array = itsConstantList;
+                while (index != N && array[index] != num) {
+                    ++index;
+                }
+                if (N == array.length) {
+                    array = new double[N * 2];
+                    System.arraycopy(itsConstantList, 0, array, 0, N);
+                    itsConstantList = array;
+                }
+            }
+            if (index == N) {
+                itsConstantList[N] = num;
+                itsConstantListSize = N + 1;
+            }
+            String constantName = "_k" + index;
+            String constantType = getStaticConstantWrapperType(num);
+            cfw.add(ByteCode.GETSTATIC, mainClassName,
+                    constantName, constantType);
+        }
+    }
+
+    private static void addDoubleWrap(ClassFileWriter cfw)
+    {
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/optimizer/OptRuntime",
+                      "wrapDouble", "(D)Ljava/lang/Double;");
+    }
+
+    private static String getStaticConstantWrapperType(double num)
+    {
+        int inum = (int)num;
+        if (inum == num) {
+            return "Ljava/lang/Integer;";
+        } else {
+            return "Ljava/lang/Double;";
+        }
+    }
+    static void pushUndefined(ClassFileWriter cfw)
+    {
+        cfw.add(ByteCode.GETSTATIC, "org/mozilla/javascript/Undefined",
+                "instance", "Ljava/lang/Object;");
+    }
+
+    int getIndex(ScriptOrFnNode n)
+    {
+        return scriptOrFnIndexes.getExisting(n);
+    }
+
+    static String getDirectTargetFieldName(int i)
+    {
+        return "_dt" + i;
+    }
+
+    String getDirectCtorName(ScriptOrFnNode n)
+    {
+        return "_n"+getIndex(n);
+    }
+
+    String getBodyMethodName(ScriptOrFnNode n)
+    {
+        return "_c"+getIndex(n);
+    }
+
+    String getBodyMethodSignature(ScriptOrFnNode n)
+    {
+        StringBuffer sb = new StringBuffer();
+        sb.append('(');
+        sb.append(mainClassSignature);
+        sb.append("Lorg/mozilla/javascript/Context;"
+                  +"Lorg/mozilla/javascript/Scriptable;"
+                  +"Lorg/mozilla/javascript/Scriptable;");
+        if (n.getType() == Token.FUNCTION) {
+            OptFunctionNode ofn = OptFunctionNode.get(n);
+            if (ofn.isTargetOfDirectCall()) {
+                int pCount = ofn.fnode.getParamCount();
+                for (int i = 0; i != pCount; i++) {
+                    sb.append("Ljava/lang/Object;D");
+                }
+            }
+        }
+        sb.append("[Ljava/lang/Object;)Ljava/lang/Object;");
+        return sb.toString();
+    }
+
+    String getFunctionInitMethodName(OptFunctionNode ofn)
+    {
+        return "_i"+getIndex(ofn.fnode);
+    }
+
+    String getCompiledRegexpName(ScriptOrFnNode n, int regexpIndex)
+    {
+        return "_re"+getIndex(n)+"_"+regexpIndex;
+    }
+
+    static RuntimeException badTree()
+    {
+        throw new RuntimeException("Bad tree in codegen");
+    }
+
+     void setMainMethodClass(String className)
+     {
+         mainMethodClass = className;
+     }
+
+     static final String DEFAULT_MAIN_METHOD_CLASS
+        = "org.mozilla.javascript.optimizer.OptRuntime";
+
+    private static final String SUPER_CLASS_NAME
+        = "org.mozilla.javascript.NativeFunction";
+
+    static final String DIRECT_CALL_PARENT_FIELD = "_dcp";
+    private static final String ID_FIELD_NAME = "_id";
+
+    private static final String REGEXP_INIT_METHOD_NAME = "_reInit";
+    private static final String REGEXP_INIT_METHOD_SIGNATURE
+        =  "(Lorg/mozilla/javascript/RegExpProxy;"
+           +"Lorg/mozilla/javascript/Context;"
+           +")V";
+    static final String REGEXP_ARRAY_FIELD_NAME = "_re";
+    static final String REGEXP_ARRAY_FIELD_TYPE = "[Ljava/lang/Object;";
+
+    static final String FUNCTION_INIT_SIGNATURE
+        =  "(Lorg/mozilla/javascript/Context;"
+           +"Lorg/mozilla/javascript/Scriptable;"
+           +")V";
+
+   static final String FUNCTION_CONSTRUCTOR_SIGNATURE
+        = "(Lorg/mozilla/javascript/Scriptable;"
+          +"Lorg/mozilla/javascript/Context;I)V";
+
+    private static final Object globalLock = new Object();
+    private static int globalSerialClassCounter;
+
+    private CompilerEnvirons compilerEnv;
+
+    private ObjArray directCallTargets;
+    ScriptOrFnNode[] scriptOrFnNodes;
+    private ObjToIntMap scriptOrFnIndexes;
+
+    private String mainMethodClass = DEFAULT_MAIN_METHOD_CLASS;
+
+    String mainClassName;
+    String mainClassSignature;
+
+    private double[] itsConstantList;
+    private int itsConstantListSize;
+}
+
+
+class BodyCodegen
+{
+    void generateBodyCode()
+    {
+        isGenerator = Codegen.isGenerator(scriptOrFn);
+        
+        // generate the body of the current function or script object
+        initBodyGeneration();
+
+        if (isGenerator) {
+
+            // All functions in the generated bytecode have a unique name. Every
+            // generator has a unique prefix followed by _gen
+            String type = "(" +
+                          codegen.mainClassSignature +
+                          "Lorg/mozilla/javascript/Context;" +
+                          "Lorg/mozilla/javascript/Scriptable;" +
+                          "Ljava/lang/Object;" +
+                          "Ljava/lang/Object;I)Ljava/lang/Object;"; 
+            cfw.startMethod(codegen.getBodyMethodName(scriptOrFn) + "_gen",
+                    type,
+                    (short)(ClassFileWriter.ACC_STATIC
+                            | ClassFileWriter.ACC_PRIVATE));
+        } else {
+            cfw.startMethod(codegen.getBodyMethodName(scriptOrFn),
+                    codegen.getBodyMethodSignature(scriptOrFn),
+                    (short)(ClassFileWriter.ACC_STATIC
+                            | ClassFileWriter.ACC_PRIVATE));
+        }
+
+        generatePrologue();
+        Node treeTop;
+        if (fnCurrent != null) {
+            treeTop = scriptOrFn.getLastChild();
+        } else {
+            treeTop = scriptOrFn;
+        }
+        generateStatement(treeTop);
+        generateEpilogue();
+
+        cfw.stopMethod((short)(localsMax + 1));
+
+        if (isGenerator) {
+            // generate the user visible method which when invoked will
+            // return a generator object
+            generateGenerator();
+        }
+    }
+
+    // This creates a the user-facing function that returns a NativeGenerator
+    // object.
+    private void generateGenerator()
+    {
+        cfw.startMethod(codegen.getBodyMethodName(scriptOrFn),
+                        codegen.getBodyMethodSignature(scriptOrFn),
+                        (short)(ClassFileWriter.ACC_STATIC
+                                | ClassFileWriter.ACC_PRIVATE));
+
+        initBodyGeneration();
+        argsLocal = firstFreeLocal++;
+        localsMax = firstFreeLocal;
+
+        // get top level scope
+        if (fnCurrent != null && !inDirectCallFunction
+            && (!compilerEnv.isUseDynamicScope()
+                || fnCurrent.fnode.getIgnoreDynamicScope()))
+        {
+            // Unless we're either in a direct call or using dynamic scope,
+            // use the enclosing scope of the function as our variable object.
+            cfw.addALoad(funObjLocal);
+            cfw.addInvoke(ByteCode.INVOKEINTERFACE,
+                          "org/mozilla/javascript/Scriptable",
+                          "getParentScope",
+                          "()Lorg/mozilla/javascript/Scriptable;");
+            cfw.addAStore(variableObjectLocal);
+        }
+
+        // generators are forced to have an activation record
+        cfw.addALoad(funObjLocal);
+        cfw.addALoad(variableObjectLocal);
+        cfw.addALoad(argsLocal);
+        addScriptRuntimeInvoke("createFunctionActivation",
+                               "(Lorg/mozilla/javascript/NativeFunction;"
+                               +"Lorg/mozilla/javascript/Scriptable;"
+                               +"[Ljava/lang/Object;"
+                               +")Lorg/mozilla/javascript/Scriptable;");
+        cfw.addAStore(variableObjectLocal);
+
+        // create a function object
+        cfw.add(ByteCode.NEW, codegen.mainClassName);
+        // Call function constructor
+        cfw.add(ByteCode.DUP);
+        cfw.addALoad(variableObjectLocal);
+        cfw.addALoad(contextLocal);           // load 'cx'
+        cfw.addPush(scriptOrFnIndex);
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, codegen.mainClassName,
+                      "<init>", Codegen.FUNCTION_CONSTRUCTOR_SIGNATURE);
+
+        // Init mainScript field
+        cfw.add(ByteCode.DUP);
+        if (isTopLevel) Kit.codeBug();  // Only functions can be generators
+        cfw.add(ByteCode.ALOAD_0);
+        cfw.add(ByteCode.GETFIELD,
+                codegen.mainClassName,
+                Codegen.DIRECT_CALL_PARENT_FIELD,
+                codegen.mainClassSignature);
+        cfw.add(ByteCode.PUTFIELD,
+                codegen.mainClassName,
+                Codegen.DIRECT_CALL_PARENT_FIELD,
+                codegen.mainClassSignature);
+
+        generateNestedFunctionInits();
+        
+        // create the NativeGenerator object that we return
+        cfw.addALoad(variableObjectLocal);
+        cfw.addALoad(thisObjLocal);
+        cfw.addLoadConstant(maxLocals);
+        cfw.addLoadConstant(maxStack);
+        addOptRuntimeInvoke("createNativeGenerator",
+                               "(Lorg/mozilla/javascript/NativeFunction;"
+                               +"Lorg/mozilla/javascript/Scriptable;"
+                               +"Lorg/mozilla/javascript/Scriptable;II"
+                               +")Lorg/mozilla/javascript/Scriptable;");
+
+        cfw.add(ByteCode.ARETURN);
+        cfw.stopMethod((short)(localsMax + 1));
+    }
+
+    private void generateNestedFunctionInits()
+    {
+        int functionCount = scriptOrFn.getFunctionCount();
+        for (int i = 0; i != functionCount; i++) {
+            OptFunctionNode ofn = OptFunctionNode.get(scriptOrFn, i);
+            if (ofn.fnode.getFunctionType()
+                    == FunctionNode.FUNCTION_STATEMENT)
+            {
+                visitFunction(ofn, FunctionNode.FUNCTION_STATEMENT);
+            }
+        }
+    }
+
+    private void initBodyGeneration()
+    {
+        isTopLevel = (scriptOrFn == codegen.scriptOrFnNodes[0]);
+
+        varRegisters = null;
+        if (scriptOrFn.getType() == Token.FUNCTION) {
+            fnCurrent = OptFunctionNode.get(scriptOrFn);
+            hasVarsInRegs = !fnCurrent.fnode.requiresActivation();
+            if (hasVarsInRegs) {
+                int n = fnCurrent.fnode.getParamAndVarCount();
+                if (n != 0) {
+                    varRegisters = new short[n];
+                }
+            }
+            inDirectCallFunction = fnCurrent.isTargetOfDirectCall();
+            if (inDirectCallFunction && !hasVarsInRegs) Codegen.badTree();
+        } else {
+            fnCurrent = null;
+            hasVarsInRegs = false;
+            inDirectCallFunction = false;
+        }
+
+        locals = new int[MAX_LOCALS];
+
+        funObjLocal = 0;
+        contextLocal = 1;
+        variableObjectLocal = 2;
+        thisObjLocal = 3;
+        localsMax = (short) 4;  // number of parms + "this"
+        firstFreeLocal = 4;
+
+        popvLocal = -1;
+        argsLocal = -1;
+        itsZeroArgArray = -1;
+        itsOneArgArray = -1;
+        scriptRegexpLocal = -1;
+        epilogueLabel = -1;
+        enterAreaStartLabel = -1;
+        generatorStateLocal = -1;
+    }
+
+    /**
+     * Generate the prologue for a function or script.
+     */
+    private void generatePrologue()
+    {
+        if (inDirectCallFunction) {
+            int directParameterCount = scriptOrFn.getParamCount();
+            // 0 is reserved for function Object 'this'
+            // 1 is reserved for context
+            // 2 is reserved for parentScope
+            // 3 is reserved for script 'this'
+            if (firstFreeLocal != 4) Kit.codeBug();
+            for (int i = 0; i != directParameterCount; ++i) {
+                varRegisters[i] = firstFreeLocal;
+                // 3 is 1 for Object parm and 2 for double parm
+                firstFreeLocal += 3;
+            }
+            if (!fnCurrent.getParameterNumberContext()) {
+                // make sure that all parameters are objects
+                itsForcedObjectParameters = true;
+                for (int i = 0; i != directParameterCount; ++i) {
+                    short reg = varRegisters[i];
+                    cfw.addALoad(reg);
+                    cfw.add(ByteCode.GETSTATIC,
+                            "java/lang/Void",
+                            "TYPE",
+                            "Ljava/lang/Class;");
+                    int isObjectLabel = cfw.acquireLabel();
+                    cfw.add(ByteCode.IF_ACMPNE, isObjectLabel);
+                    cfw.addDLoad(reg + 1);
+                    addDoubleWrap();
+                    cfw.addAStore(reg);
+                    cfw.markLabel(isObjectLabel);
+                }
+            }
+        }
+
+        if (fnCurrent != null && !inDirectCallFunction
+            && (!compilerEnv.isUseDynamicScope()
+                || fnCurrent.fnode.getIgnoreDynamicScope()))
+        {
+            // Unless we're either in a direct call or using dynamic scope,
+            // use the enclosing scope of the function as our variable object.
+            cfw.addALoad(funObjLocal);
+            cfw.addInvoke(ByteCode.INVOKEINTERFACE,
+                          "org/mozilla/javascript/Scriptable",
+                          "getParentScope",
+                          "()Lorg/mozilla/javascript/Scriptable;");
+            cfw.addAStore(variableObjectLocal);
+        }
+
+        // reserve 'args[]'
+        argsLocal = firstFreeLocal++;
+        localsMax = firstFreeLocal;
+
+        // Generate Generator specific prelude
+        if (isGenerator) {
+
+            // reserve 'args[]'
+            operationLocal = firstFreeLocal++;
+            localsMax = firstFreeLocal;
+
+            // Local 3 is a reference to a GeneratorState object. The rest
+            // of codegen expects local 3 to be a reference to the thisObj.
+            // So move the value in local 3 to generatorStateLocal, and load
+            // the saved thisObj from the GeneratorState object.
+            cfw.addALoad(thisObjLocal);
+            generatorStateLocal = firstFreeLocal++;
+            localsMax = firstFreeLocal;
+            cfw.add(ByteCode.CHECKCAST, OptRuntime.GeneratorState.CLASS_NAME);
+            cfw.add(ByteCode.DUP);
+            cfw.addAStore(generatorStateLocal);
+            cfw.add(ByteCode.GETFIELD,
+                    OptRuntime.GeneratorState.CLASS_NAME,
+                    OptRuntime.GeneratorState.thisObj_NAME,
+                    OptRuntime.GeneratorState.thisObj_TYPE);
+            cfw.addAStore(thisObjLocal);
+            
+            if (epilogueLabel == -1) {
+                epilogueLabel = cfw.acquireLabel();
+            }
+
+            ArrayList targets = ((FunctionNode)scriptOrFn).getResumptionPoints();
+            if (targets != null) {
+                // get resumption point
+                generateGetGeneratorResumptionPoint();
+  
+                // generate dispatch table
+                generatorSwitch = cfw.addTableSwitch(0,
+                    targets.size() + GENERATOR_START);
+                generateCheckForThrowOrClose(-1, false, GENERATOR_START);
+            }
+        }
+
+        if (fnCurrent == null) {
+            // See comments in case Token.REGEXP
+            if (scriptOrFn.getRegexpCount() != 0) {
+                scriptRegexpLocal = getNewWordLocal();
+                codegen.pushRegExpArray(cfw, scriptOrFn, contextLocal,
+                                        variableObjectLocal);
+                cfw.addAStore(scriptRegexpLocal);
+            }
+        }
+
+        if (compilerEnv.isGenerateObserverCount())
+            saveCurrentCodeOffset();
+
+        if (hasVarsInRegs) {
+            // No need to create activation. Pad arguments if need be.
+            int parmCount = scriptOrFn.getParamCount();
+            if (parmCount > 0 && !inDirectCallFunction) {
+                // Set up args array
+                // check length of arguments, pad if need be
+                cfw.addALoad(argsLocal);
+                cfw.add(ByteCode.ARRAYLENGTH);
+                cfw.addPush(parmCount);
+                int label = cfw.acquireLabel();
+                cfw.add(ByteCode.IF_ICMPGE, label);
+                cfw.addALoad(argsLocal);
+                cfw.addPush(parmCount);
+                addScriptRuntimeInvoke("padArguments",
+                                       "([Ljava/lang/Object;I"
+                                       +")[Ljava/lang/Object;");
+                cfw.addAStore(argsLocal);
+                cfw.markLabel(label);
+            }
+
+            int paramCount = fnCurrent.fnode.getParamCount();
+            int varCount = fnCurrent.fnode.getParamAndVarCount();
+            boolean [] constDeclarations = fnCurrent.fnode.getParamAndVarConst();
+
+            // REMIND - only need to initialize the vars that don't get a value
+            // before the next call and are used in the function
+            short firstUndefVar = -1;
+            for (int i = 0; i != varCount; ++i) {
+                short reg = -1;
+                if (i < paramCount) {
+                    if (!inDirectCallFunction) {
+                        reg = getNewWordLocal();
+                        cfw.addALoad(argsLocal);
+                        cfw.addPush(i);
+                        cfw.add(ByteCode.AALOAD);
+                        cfw.addAStore(reg);
+                    }
+                } else if (fnCurrent.isNumberVar(i)) {
+                    reg = getNewWordPairLocal(constDeclarations[i]);
+                    cfw.addPush(0.0);
+                    cfw.addDStore(reg);
+                } else {
+                    reg = getNewWordLocal(constDeclarations[i]);
+                    if (firstUndefVar == -1) {
+                        Codegen.pushUndefined(cfw);
+                        firstUndefVar = reg;
+                    } else {
+                        cfw.addALoad(firstUndefVar);
+                    }
+                    cfw.addAStore(reg);
+                }
+                if (reg >= 0) {
+                    if (constDeclarations[i]) {
+                        cfw.addPush(0);
+                        cfw.addIStore(reg + (fnCurrent.isNumberVar(i) ? 2 : 1));
+                    }
+                    varRegisters[i] = reg;
+                }
+
+                // Add debug table entry if we're generating debug info
+                if (compilerEnv.isGenerateDebugInfo()) {
+                    String name = fnCurrent.fnode.getParamOrVarName(i);
+                    String type = fnCurrent.isNumberVar(i)
+                                      ? "D" : "Ljava/lang/Object;";
+                    int startPC = cfw.getCurrentCodeOffset();
+                    if (reg < 0) {
+                        reg = varRegisters[i];
+                    }
+                    cfw.addVariableDescriptor(name, type, startPC, reg);
+                }
+            }
+
+            // Skip creating activation object.
+            return;
+        }
+
+        // skip creating activation object for the body of a generator. The
+        // activation record required by a generator has already been created
+        // in generateGenerator().
+        if (isGenerator)
+            return;
+
+
+        String debugVariableName;
+        if (fnCurrent != null) {
+            debugVariableName = "activation";
+            cfw.addALoad(funObjLocal);
+            cfw.addALoad(variableObjectLocal);
+            cfw.addALoad(argsLocal);
+            addScriptRuntimeInvoke("createFunctionActivation",
+                                   "(Lorg/mozilla/javascript/NativeFunction;"
+                                   +"Lorg/mozilla/javascript/Scriptable;"
+                                   +"[Ljava/lang/Object;"
+                                   +")Lorg/mozilla/javascript/Scriptable;");
+            cfw.addAStore(variableObjectLocal);
+            cfw.addALoad(contextLocal);
+            cfw.addALoad(variableObjectLocal);
+            addScriptRuntimeInvoke("enterActivationFunction",
+                                   "(Lorg/mozilla/javascript/Context;"
+                                   +"Lorg/mozilla/javascript/Scriptable;"
+                                   +")V");
+        } else {
+            debugVariableName = "global";
+            cfw.addALoad(funObjLocal);
+            cfw.addALoad(thisObjLocal);
+            cfw.addALoad(contextLocal);
+            cfw.addALoad(variableObjectLocal);
+            cfw.addPush(0); // false to indicate it is not eval script
+            addScriptRuntimeInvoke("initScript",
+                                   "(Lorg/mozilla/javascript/NativeFunction;"
+                                   +"Lorg/mozilla/javascript/Scriptable;"
+                                   +"Lorg/mozilla/javascript/Context;"
+                                   +"Lorg/mozilla/javascript/Scriptable;"
+                                   +"Z"
+                                   +")V");
+        }
+
+        enterAreaStartLabel = cfw.acquireLabel();
+        epilogueLabel = cfw.acquireLabel();
+        cfw.markLabel(enterAreaStartLabel);
+
+        generateNestedFunctionInits();
+
+        // default is to generate debug info
+        if (compilerEnv.isGenerateDebugInfo()) {
+            cfw.addVariableDescriptor(debugVariableName,
+                    "Lorg/mozilla/javascript/Scriptable;",
+                    cfw.getCurrentCodeOffset(), variableObjectLocal);
+        }
+
+        if (fnCurrent == null) {
+            // OPT: use dataflow to prove that this assignment is dead
+            popvLocal = getNewWordLocal();
+            Codegen.pushUndefined(cfw);
+            cfw.addAStore(popvLocal);
+
+            int linenum = scriptOrFn.getEndLineno();
+            if (linenum != -1)
+              cfw.addLineNumberEntry((short)linenum);
+
+        } else {
+            if (fnCurrent.itsContainsCalls0) {
+                itsZeroArgArray = getNewWordLocal();
+                cfw.add(ByteCode.GETSTATIC,
+                        "org/mozilla/javascript/ScriptRuntime",
+                        "emptyArgs", "[Ljava/lang/Object;");
+                cfw.addAStore(itsZeroArgArray);
+            }
+            if (fnCurrent.itsContainsCalls1) {
+                itsOneArgArray = getNewWordLocal();
+                cfw.addPush(1);
+                cfw.add(ByteCode.ANEWARRAY, "java/lang/Object");
+                cfw.addAStore(itsOneArgArray);
+            }
+        }
+    }
+
+    private void generateGetGeneratorResumptionPoint()
+    {
+        cfw.addALoad(generatorStateLocal);
+        cfw.add(ByteCode.GETFIELD,
+                OptRuntime.GeneratorState.CLASS_NAME,
+                OptRuntime.GeneratorState.resumptionPoint_NAME,
+                OptRuntime.GeneratorState.resumptionPoint_TYPE);
+    }
+
+    private void generateSetGeneratorResumptionPoint(int nextState)
+    {
+        cfw.addALoad(generatorStateLocal);
+        cfw.addLoadConstant(nextState);
+        cfw.add(ByteCode.PUTFIELD,
+                OptRuntime.GeneratorState.CLASS_NAME,
+                OptRuntime.GeneratorState.resumptionPoint_NAME,
+                OptRuntime.GeneratorState.resumptionPoint_TYPE);
+    }
+
+    private void generateGetGeneratorStackState()
+    {
+        cfw.addALoad(generatorStateLocal);
+        addOptRuntimeInvoke("getGeneratorStackState",
+                    "(Ljava/lang/Object;)[Ljava/lang/Object;");
+    }
+
+    private void generateEpilogue()
+    {
+        if (compilerEnv.isGenerateObserverCount())
+            addInstructionCount();        
+        if (isGenerator) {
+            // generate locals initialization
+            HashMap liveLocals = ((FunctionNode)scriptOrFn).getLiveLocals();
+            if (liveLocals != null) {
+                ArrayList nodes = ((FunctionNode)scriptOrFn).getResumptionPoints();
+                for (int i = 0; i < nodes.size(); i++) {
+                    Node node = (Node) nodes.get(i);
+                    int[] live = (int [])liveLocals.get(node);
+                    if (live != null) {
+                        cfw.markTableSwitchCase(generatorSwitch,
+                            getNextGeneratorState(node));
+                        generateGetGeneratorLocalsState();
+                        for (int j = 0; j < live.length; j++) {
+                                cfw.add(ByteCode.DUP);
+                                cfw.addLoadConstant(j);
+                                cfw.add(ByteCode.AALOAD);
+                                cfw.addAStore(live[j]);
+                        }
+                        cfw.add(ByteCode.POP);
+                        cfw.add(ByteCode.GOTO, getTargetLabel(node));
+                    }
+                }
+            }
+
+            // generate dispatch tables for finally
+            if (finallys != null) {
+                Enumeration en = finallys.keys();
+                while(en.hasMoreElements()) {
+                    Node n = (Node) en.nextElement();
+                    if (n.getType() == Token.FINALLY) {
+                        FinallyReturnPoint ret =
+                                (FinallyReturnPoint)finallys.get(n);
+                        // the finally will jump here
+                        cfw.markLabel(ret.tableLabel, (short)1);
+
+                        // start generating a dispatch table
+                        int startSwitch = cfw.addTableSwitch(0,
+                                            ret.jsrPoints.size() - 1);
+                        int c = 0;
+                        cfw.markTableSwitchDefault(startSwitch);
+                        for (int i = 0; i < ret.jsrPoints.size(); i++) {
+                            // generate gotos back to the JSR location
+                            cfw.markTableSwitchCase(startSwitch, c);
+                            cfw.add(ByteCode.GOTO,
+                                    ((Integer)ret.jsrPoints.get(i)).intValue());
+                            c++;
+                        }
+                    }
+                }
+            }
+        }
+
+        if (epilogueLabel != -1) {
+            cfw.markLabel(epilogueLabel);
+        }
+
+        if (hasVarsInRegs) {
+            cfw.add(ByteCode.ARETURN);
+            return;
+        } else if (isGenerator) {
+            if (((FunctionNode)scriptOrFn).getResumptionPoints() != null) {
+                cfw.markTableSwitchDefault(generatorSwitch);
+            }
+
+            // change state for re-entry
+            generateSetGeneratorResumptionPoint(GENERATOR_TERMINATE);
+
+            // throw StopIteration
+            cfw.addALoad(variableObjectLocal);
+            addOptRuntimeInvoke("throwStopIteration",
+                    "(Ljava/lang/Object;)V");
+
+            Codegen.pushUndefined(cfw);
+            cfw.add(ByteCode.ARETURN);
+            
+        } else if (fnCurrent == null) {
+            cfw.addALoad(popvLocal);
+            cfw.add(ByteCode.ARETURN);
+        } else {
+            generateActivationExit();
+            cfw.add(ByteCode.ARETURN);
+
+            // Generate catch block to catch all and rethrow to call exit code
+            // under exception propagation as well.
+
+            int finallyHandler = cfw.acquireLabel();
+            cfw.markHandler(finallyHandler);
+            short exceptionObject = getNewWordLocal();
+            cfw.addAStore(exceptionObject);
+
+            // Duplicate generateActivationExit() in the catch block since it
+            // takes less space then full-featured ByteCode.JSR/ByteCode.RET
+            generateActivationExit();
+
+            cfw.addALoad(exceptionObject);
+            releaseWordLocal(exceptionObject);
+            // rethrow
+            cfw.add(ByteCode.ATHROW);
+
+            // mark the handler
+            cfw.addExceptionHandler(enterAreaStartLabel, epilogueLabel,
+                                    finallyHandler, null); // catch any
+        }
+    }
+
+    private void generateGetGeneratorLocalsState() {
+        cfw.addALoad(generatorStateLocal);
+        addOptRuntimeInvoke("getGeneratorLocalsState",
+                                "(Ljava/lang/Object;)[Ljava/lang/Object;");
+    }
+
+    private void generateActivationExit()
+    {
+        if (fnCurrent == null || hasVarsInRegs) throw Kit.codeBug();
+        cfw.addALoad(contextLocal);
+        addScriptRuntimeInvoke("exitActivationFunction",
+                               "(Lorg/mozilla/javascript/Context;)V");
+    }
+
+    private void generateStatement(Node node)
+    {
+        updateLineNumber(node);
+        int type = node.getType();
+        Node child = node.getFirstChild();
+        switch (type) {
+              case Token.LOOP:
+              case Token.LABEL:
+              case Token.WITH:
+              case Token.SCRIPT:
+              case Token.BLOCK:
+              case Token.EMPTY:
+                // no-ops.
+                while (child != null) {
+                    generateStatement(child);
+                    child = child.getNext();
+                }
+                break;
+
+              case Token.LOCAL_BLOCK: {
+                int local = getNewWordLocal();
+                if (isGenerator) {
+                    cfw.add(ByteCode.ACONST_NULL);
+                    cfw.addAStore(local);
+                }
+                node.putIntProp(Node.LOCAL_PROP, local);
+                while (child != null) {
+                    generateStatement(child);
+                    child = child.getNext();
+                }
+                releaseWordLocal((short)local);
+                node.removeProp(Node.LOCAL_PROP);
+                break;
+              }
+
+              case Token.FUNCTION: {
+                int fnIndex = node.getExistingIntProp(Node.FUNCTION_PROP);
+                OptFunctionNode ofn = OptFunctionNode.get(scriptOrFn, fnIndex);
+                int t = ofn.fnode.getFunctionType();
+                if (t == FunctionNode.FUNCTION_EXPRESSION_STATEMENT) {
+                    visitFunction(ofn, t);
+                } else {
+                    if (t != FunctionNode.FUNCTION_STATEMENT) {
+                        throw Codegen.badTree();
+                    }
+                }
+                break;
+              }
+
+              case Token.TRY:
+                visitTryCatchFinally((Node.Jump)node, child);
+                break;
+
+              case Token.CATCH_SCOPE:
+                {
+                    // nothing stays on the stack on entry into a catch scope
+                    cfw.setStackTop((short) 0);
+
+                    int local = getLocalBlockRegister(node);
+                    int scopeIndex
+                        = node.getExistingIntProp(Node.CATCH_SCOPE_PROP);
+
+                    String name = child.getString(); // name of exception
+                    child = child.getNext();
+                    generateExpression(child, node); // load expression object
+                    if (scopeIndex == 0) {
+                        cfw.add(ByteCode.ACONST_NULL);
+                    } else {
+                        // Load previous catch scope object
+                        cfw.addALoad(local);
+                    }
+                    cfw.addPush(name);
+                    cfw.addALoad(contextLocal);
+                    cfw.addALoad(variableObjectLocal);
+
+                    addScriptRuntimeInvoke(
+                        "newCatchScope",
+                        "(Ljava/lang/Throwable;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +"Ljava/lang/String;"
+                        +"Lorg/mozilla/javascript/Context;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +")Lorg/mozilla/javascript/Scriptable;");
+                    cfw.addAStore(local);
+                }
+                break;
+
+              case Token.THROW:
+                generateExpression(child, node);
+                if (compilerEnv.isGenerateObserverCount())
+                    addInstructionCount();                   
+                generateThrowJavaScriptException();
+                break;
+
+              case Token.RETHROW:
+                if (compilerEnv.isGenerateObserverCount())
+                    addInstructionCount();
+                cfw.addALoad(getLocalBlockRegister(node));
+                cfw.add(ByteCode.ATHROW);
+                break;
+
+              case Token.RETURN_RESULT:
+              case Token.RETURN:
+                if (!isGenerator) {
+                    if (child != null) {
+                        generateExpression(child, node);
+                    } else if (type == Token.RETURN) {
+                        Codegen.pushUndefined(cfw);
+                    } else {
+                        if (popvLocal < 0) throw Codegen.badTree();
+                        cfw.addALoad(popvLocal);
+                    }
+                }
+                if (compilerEnv.isGenerateObserverCount())
+                    addInstructionCount();
+                if (epilogueLabel == -1) {
+                    if (!hasVarsInRegs) throw Codegen.badTree();
+                    epilogueLabel = cfw.acquireLabel();
+                }
+                cfw.add(ByteCode.GOTO, epilogueLabel);
+                break;
+
+              case Token.SWITCH:
+                if (compilerEnv.isGenerateObserverCount())
+                    addInstructionCount();
+                visitSwitch((Node.Jump)node, child);
+                break;
+
+              case Token.ENTERWITH:
+                generateExpression(child, node);
+                cfw.addALoad(contextLocal);
+                cfw.addALoad(variableObjectLocal);
+                addScriptRuntimeInvoke(
+                    "enterWith",
+                    "(Ljava/lang/Object;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +"Lorg/mozilla/javascript/Scriptable;"
+                    +")Lorg/mozilla/javascript/Scriptable;");
+                cfw.addAStore(variableObjectLocal);
+                incReferenceWordLocal(variableObjectLocal);
+                break;
+
+              case Token.LEAVEWITH:
+                cfw.addALoad(variableObjectLocal);
+                addScriptRuntimeInvoke(
+                    "leaveWith",
+                    "(Lorg/mozilla/javascript/Scriptable;"
+                    +")Lorg/mozilla/javascript/Scriptable;");
+                cfw.addAStore(variableObjectLocal);
+                decReferenceWordLocal(variableObjectLocal);
+                break;
+
+              case Token.ENUM_INIT_KEYS:
+              case Token.ENUM_INIT_VALUES:
+              case Token.ENUM_INIT_ARRAY:
+                generateExpression(child, node);
+                cfw.addALoad(contextLocal);
+                int enumType = type == Token.ENUM_INIT_KEYS 
+                                   ? ScriptRuntime.ENUMERATE_KEYS :
+                               type == Token.ENUM_INIT_VALUES 
+                                   ? ScriptRuntime.ENUMERATE_VALUES :
+                               ScriptRuntime.ENUMERATE_ARRAY;
+                cfw.addPush(enumType);
+                addScriptRuntimeInvoke("enumInit",
+                                       "(Ljava/lang/Object;"
+                                       +"Lorg/mozilla/javascript/Context;"
+                                       +"I"
+                                       +")Ljava/lang/Object;");
+                cfw.addAStore(getLocalBlockRegister(node));
+                break;
+
+              case Token.EXPR_VOID:
+                if (child.getType() == Token.SETVAR) {
+                    /* special case this so as to avoid unnecessary
+                    load's & pop's */
+                    visitSetVar(child, child.getFirstChild(), false);
+                }
+                else if (child.getType() == Token.SETCONSTVAR) {
+                    /* special case this so as to avoid unnecessary
+                    load's & pop's */
+                    visitSetConstVar(child, child.getFirstChild(), false);
+                }
+                else if (child.getType() == Token.YIELD) {
+                    generateYieldPoint(child, false);
+                }
+                else {
+                    generateExpression(child, node);
+                    if (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1)
+                        cfw.add(ByteCode.POP2);
+                    else
+                        cfw.add(ByteCode.POP);
+                }
+                break;
+
+              case Token.EXPR_RESULT:
+                generateExpression(child, node);
+                if (popvLocal < 0) {
+                    popvLocal = getNewWordLocal();
+                }
+                cfw.addAStore(popvLocal);
+                break;
+
+              case Token.TARGET:
+                {
+                    if (compilerEnv.isGenerateObserverCount())
+                        addInstructionCount();
+                    int label = getTargetLabel(node);
+                    cfw.markLabel(label);
+                    if (compilerEnv.isGenerateObserverCount())
+                        saveCurrentCodeOffset();
+                }
+                break;
+
+              case Token.JSR:
+              case Token.GOTO:
+              case Token.IFEQ:
+              case Token.IFNE:
+                if (compilerEnv.isGenerateObserverCount())
+                    addInstructionCount(); 
+                visitGoto((Node.Jump)node, type, child);
+                break;
+
+              case Token.FINALLY:
+                {
+                    if (compilerEnv.isGenerateObserverCount())
+                        saveCurrentCodeOffset();
+                    // there is exactly one value on the stack when enterring
+                    // finally blocks: the return address (or its int encoding)
+                    cfw.setStackTop((short)1);
+
+                    // Save return address in a new local
+                    int finallyRegister = getNewWordLocal();
+                    if (isGenerator)
+                        generateIntegerWrap();
+                    cfw.addAStore(finallyRegister);
+                    
+                    while (child != null) {
+                        generateStatement(child);
+                        child = child.getNext();
+                    }
+                    if (isGenerator) {
+                        cfw.addALoad(finallyRegister);
+                        cfw.add(ByteCode.CHECKCAST, "java/lang/Integer");
+                        generateIntegerUnwrap();
+                        FinallyReturnPoint ret =
+                                (FinallyReturnPoint)finallys.get(node);
+                        ret.tableLabel = cfw.acquireLabel();
+                        cfw.add(ByteCode.GOTO, ret.tableLabel);
+                    } else {
+                        cfw.add(ByteCode.RET, finallyRegister);
+                    }
+                    releaseWordLocal((short)finallyRegister);
+                }
+                break;
+
+              case Token.DEBUGGER:
+                break;
+
+              default:
+                throw Codegen.badTree();
+        }
+
+    }
+
+    private void generateIntegerWrap()
+    {
+        cfw.addInvoke(ByteCode.INVOKESTATIC, "java/lang/Integer", "valueOf",
+                "(I)Ljava/lang/Integer;");
+    }
+
+
+    private void generateIntegerUnwrap()
+    {
+        cfw.addInvoke(ByteCode.INVOKEVIRTUAL, "java/lang/Integer",
+                "intValue", "()I");
+    }
+
+
+    private void generateThrowJavaScriptException()
+    {
+        cfw.add(ByteCode.NEW,
+                        "org/mozilla/javascript/JavaScriptException");
+        cfw.add(ByteCode.DUP_X1);
+        cfw.add(ByteCode.SWAP);
+        cfw.addPush(scriptOrFn.getSourceName());
+        cfw.addPush(itsLineNumber);
+        cfw.addInvoke(
+                    ByteCode.INVOKESPECIAL,
+                    "org/mozilla/javascript/JavaScriptException",
+                    "<init>",
+                    "(Ljava/lang/Object;Ljava/lang/String;I)V");
+        cfw.add(ByteCode.ATHROW);
+    }
+
+    private int getNextGeneratorState(Node node)
+    {
+        int nodeIndex = ((FunctionNode)scriptOrFn).getResumptionPoints()
+                .indexOf(node);
+        return nodeIndex + GENERATOR_YIELD_START;
+    }
+
+    private void generateExpression(Node node, Node parent)
+    {
+        int type = node.getType();
+        Node child = node.getFirstChild();
+        switch (type) {
+              case Token.USE_STACK:
+                break;
+
+              case Token.FUNCTION:
+                if (fnCurrent != null || parent.getType() != Token.SCRIPT) {
+                    int fnIndex = node.getExistingIntProp(Node.FUNCTION_PROP);
+                    OptFunctionNode ofn = OptFunctionNode.get(scriptOrFn,
+                                                             fnIndex);
+                    int t = ofn.fnode.getFunctionType();
+                    if (t != FunctionNode.FUNCTION_EXPRESSION) {
+                        throw Codegen.badTree();
+                    }
+                    visitFunction(ofn, t);
+                }
+                break;
+
+              case Token.NAME:
+                {
+                    cfw.addALoad(contextLocal);
+                    cfw.addALoad(variableObjectLocal);
+                    cfw.addPush(node.getString());
+                    addScriptRuntimeInvoke(
+                        "name",
+                        "(Lorg/mozilla/javascript/Context;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +"Ljava/lang/String;"
+                        +")Ljava/lang/Object;");
+                }
+                break;
+
+              case Token.CALL:
+              case Token.NEW:
+                {
+                    int specialType = node.getIntProp(Node.SPECIALCALL_PROP,
+                                                      Node.NON_SPECIALCALL);
+                    if (specialType == Node.NON_SPECIALCALL) {
+                        OptFunctionNode target;
+                        target = (OptFunctionNode)node.getProp(
+                                     Node.DIRECTCALL_PROP);
+
+                        if (target != null) {
+                            visitOptimizedCall(node, target, type, child);
+                        } else if (type == Token.CALL) {
+                            visitStandardCall(node, child);
+                        } else {
+                            visitStandardNew(node, child);
+                        }
+                    } else {
+                        visitSpecialCall(node, type, specialType, child);
+                    }
+                }
+                break;
+
+              case Token.REF_CALL:
+                generateFunctionAndThisObj(child, node);
+                // stack: ... functionObj thisObj
+                child = child.getNext();
+                generateCallArgArray(node, child, false);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke(
+                    "callRef",
+                    "(Lorg/mozilla/javascript/Callable;"
+                    +"Lorg/mozilla/javascript/Scriptable;"
+                    +"[Ljava/lang/Object;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Lorg/mozilla/javascript/Ref;");
+                break;
+
+              case Token.NUMBER:
+                {
+                    double num = node.getDouble();
+                    if (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1) {
+                        cfw.addPush(num);
+                    } else {
+                        codegen.pushNumberAsObject(cfw, num);
+                    }
+                }
+                break;
+
+              case Token.STRING:
+                cfw.addPush(node.getString());
+                break;
+
+              case Token.THIS:
+                cfw.addALoad(thisObjLocal);
+                break;
+
+              case Token.THISFN:
+                cfw.add(ByteCode.ALOAD_0);
+                break;
+
+              case Token.NULL:
+                cfw.add(ByteCode.ACONST_NULL);
+                break;
+
+              case Token.TRUE:
+                cfw.add(ByteCode.GETSTATIC, "java/lang/Boolean",
+                        "TRUE", "Ljava/lang/Boolean;");
+                break;
+
+              case Token.FALSE:
+                cfw.add(ByteCode.GETSTATIC, "java/lang/Boolean",
+                        "FALSE", "Ljava/lang/Boolean;");
+                break;
+
+              case Token.REGEXP:
+                {
+                    int i = node.getExistingIntProp(Node.REGEXP_PROP);
+                    // Scripts can not use REGEXP_ARRAY_FIELD_NAME since
+                    // it it will make script.exec non-reentrant so they
+                    // store regexp array in a local variable while
+                    // functions always access precomputed
+                    // REGEXP_ARRAY_FIELD_NAME not to consume locals
+                    if (fnCurrent == null) {
+                        cfw.addALoad(scriptRegexpLocal);
+                    } else {
+                        cfw.addALoad(funObjLocal);
+                        cfw.add(ByteCode.GETFIELD, codegen.mainClassName,
+                                Codegen.REGEXP_ARRAY_FIELD_NAME,
+                                Codegen.REGEXP_ARRAY_FIELD_TYPE);
+                    }
+                    cfw.addPush(i);
+                    cfw.add(ByteCode.AALOAD);
+                }
+                break;
+
+              case Token.COMMA: {
+                Node next = child.getNext();
+                while (next != null) {
+                    generateExpression(child, node);
+                    cfw.add(ByteCode.POP);
+                    child = next;
+                    next = next.getNext();
+                }
+                generateExpression(child, node);
+                break;
+              }
+
+              case Token.ENUM_NEXT:
+              case Token.ENUM_ID: {
+                int local = getLocalBlockRegister(node);
+                cfw.addALoad(local);
+                if (type == Token.ENUM_NEXT) {
+                    addScriptRuntimeInvoke(
+                        "enumNext", "(Ljava/lang/Object;)Ljava/lang/Boolean;");
+                } else {
+                    cfw.addALoad(contextLocal);
+                    addScriptRuntimeInvoke("enumId",
+                                           "(Ljava/lang/Object;"
+                                           +"Lorg/mozilla/javascript/Context;"
+                                           +")Ljava/lang/Object;");
+                }
+                break;
+              }
+
+              case Token.ARRAYLIT:
+                visitArrayLiteral(node, child);
+                break;
+
+              case Token.OBJECTLIT:
+                visitObjectLiteral(node, child);
+                break;
+
+              case Token.NOT: {
+                int trueTarget = cfw.acquireLabel();
+                int falseTarget = cfw.acquireLabel();
+                int beyond = cfw.acquireLabel();
+                generateIfJump(child, node, trueTarget, falseTarget);
+
+                cfw.markLabel(trueTarget);
+                cfw.add(ByteCode.GETSTATIC, "java/lang/Boolean",
+                                        "FALSE", "Ljava/lang/Boolean;");
+                cfw.add(ByteCode.GOTO, beyond);
+                cfw.markLabel(falseTarget);
+                cfw.add(ByteCode.GETSTATIC, "java/lang/Boolean",
+                                        "TRUE", "Ljava/lang/Boolean;");
+                cfw.markLabel(beyond);
+                cfw.adjustStackTop(-1);
+                break;
+              }
+
+              case Token.BITNOT:
+                generateExpression(child, node);
+                addScriptRuntimeInvoke("toInt32", "(Ljava/lang/Object;)I");
+                cfw.addPush(-1);         // implement ~a as (a ^ -1)
+                cfw.add(ByteCode.IXOR);
+                cfw.add(ByteCode.I2D);
+                addDoubleWrap();
+                break;
+
+              case Token.VOID:
+                generateExpression(child, node);
+                cfw.add(ByteCode.POP);
+                Codegen.pushUndefined(cfw);
+                break;
+
+              case Token.TYPEOF:
+                generateExpression(child, node);
+                addScriptRuntimeInvoke("typeof",
+                                       "(Ljava/lang/Object;"
+                                       +")Ljava/lang/String;");
+                break;
+
+              case Token.TYPEOFNAME:
+                visitTypeofname(node);
+                break;
+
+              case Token.INC:
+              case Token.DEC:
+                visitIncDec(node);
+                break;
+
+              case Token.OR:
+              case Token.AND: {
+                    generateExpression(child, node);
+                    cfw.add(ByteCode.DUP);
+                    addScriptRuntimeInvoke("toBoolean",
+                                           "(Ljava/lang/Object;)Z");
+                    int falseTarget = cfw.acquireLabel();
+                    if (type == Token.AND)
+                        cfw.add(ByteCode.IFEQ, falseTarget);
+                    else
+                        cfw.add(ByteCode.IFNE, falseTarget);
+                    cfw.add(ByteCode.POP);
+                    generateExpression(child.getNext(), node);
+                    cfw.markLabel(falseTarget);
+                }
+                break;
+
+              case Token.HOOK : {
+                    Node ifThen = child.getNext();
+                    Node ifElse = ifThen.getNext();
+                    generateExpression(child, node);
+                    addScriptRuntimeInvoke("toBoolean",
+                                           "(Ljava/lang/Object;)Z");
+                    int elseTarget = cfw.acquireLabel();
+                    cfw.add(ByteCode.IFEQ, elseTarget);
+                    short stack = cfw.getStackTop();
+                    generateExpression(ifThen, node);
+                    int afterHook = cfw.acquireLabel();
+                    cfw.add(ByteCode.GOTO, afterHook);
+                    cfw.markLabel(elseTarget, stack);
+                    generateExpression(ifElse, node);
+                    cfw.markLabel(afterHook);
+                }
+                break;
+
+              case Token.ADD: {
+                    generateExpression(child, node);
+                    generateExpression(child.getNext(), node);
+                    switch (node.getIntProp(Node.ISNUMBER_PROP, -1)) {
+                      case Node.BOTH:
+                        cfw.add(ByteCode.DADD);
+                        break;
+                      case Node.LEFT:
+                        addOptRuntimeInvoke("add",
+                            "(DLjava/lang/Object;)Ljava/lang/Object;");
+                        break;
+                      case Node.RIGHT:
+                        addOptRuntimeInvoke("add",
+                            "(Ljava/lang/Object;D)Ljava/lang/Object;");
+                        break;
+                      default:
+                        if (child.getType() == Token.STRING) {
+                            addScriptRuntimeInvoke("add",
+                                "(Ljava/lang/String;"
+                                +"Ljava/lang/Object;"
+                                +")Ljava/lang/String;");
+                        } else if (child.getNext().getType() == Token.STRING) {
+                            addScriptRuntimeInvoke("add",
+                                "(Ljava/lang/Object;"
+                                +"Ljava/lang/String;"
+                                +")Ljava/lang/String;");
+                        } else {
+                            cfw.addALoad(contextLocal);
+                            addScriptRuntimeInvoke("add",
+                                "(Ljava/lang/Object;"
+                                +"Ljava/lang/Object;"
+                                +"Lorg/mozilla/javascript/Context;"
+                                +")Ljava/lang/Object;");
+                        }
+                    }
+                }
+                break;
+
+              case Token.MUL:
+                visitArithmetic(node, ByteCode.DMUL, child, parent);
+                break;
+
+              case Token.SUB:
+                visitArithmetic(node, ByteCode.DSUB, child, parent);
+                break;
+
+              case Token.DIV:
+              case Token.MOD:
+                visitArithmetic(node, type == Token.DIV
+                                      ? ByteCode.DDIV
+                                      : ByteCode.DREM, child, parent);
+                break;
+
+              case Token.BITOR:
+              case Token.BITXOR:
+              case Token.BITAND:
+              case Token.LSH:
+              case Token.RSH:
+              case Token.URSH:
+                visitBitOp(node, type, child);
+                break;
+
+              case Token.POS:
+              case Token.NEG:
+                generateExpression(child, node);
+                addObjectToDouble();
+                if (type == Token.NEG) {
+                    cfw.add(ByteCode.DNEG);
+                }
+                addDoubleWrap();
+                break;
+
+              case Token.TO_DOUBLE:
+                // cnvt to double (not Double)
+                generateExpression(child, node);
+                addObjectToDouble();
+                break;
+
+              case Token.TO_OBJECT: {
+                // convert from double
+                int prop = -1;
+                if (child.getType() == Token.NUMBER) {
+                    prop = child.getIntProp(Node.ISNUMBER_PROP, -1);
+                }
+                if (prop != -1) {
+                    child.removeProp(Node.ISNUMBER_PROP);
+                    generateExpression(child, node);
+                    child.putIntProp(Node.ISNUMBER_PROP, prop);
+                } else {
+                    generateExpression(child, node);
+                    addDoubleWrap();
+                }
+                break;
+              }
+
+              case Token.IN:
+              case Token.INSTANCEOF:
+              case Token.LE:
+              case Token.LT:
+              case Token.GE:
+              case Token.GT: {
+                int trueGOTO = cfw.acquireLabel();
+                int falseGOTO = cfw.acquireLabel();
+                visitIfJumpRelOp(node, child, trueGOTO, falseGOTO);
+                addJumpedBooleanWrap(trueGOTO, falseGOTO);
+                break;
+              }
+
+              case Token.EQ:
+              case Token.NE:
+              case Token.SHEQ:
+              case Token.SHNE: {
+                int trueGOTO = cfw.acquireLabel();
+                int falseGOTO = cfw.acquireLabel();
+                visitIfJumpEqOp(node, child, trueGOTO, falseGOTO);
+                addJumpedBooleanWrap(trueGOTO, falseGOTO);
+                break;
+              }
+
+              case Token.GETPROP:
+              case Token.GETPROPNOWARN:
+                visitGetProp(node, child);
+                break;
+
+              case Token.GETELEM:
+                generateExpression(child, node); // object
+                generateExpression(child.getNext(), node);  // id
+                cfw.addALoad(contextLocal);
+                if (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1) {
+                    addScriptRuntimeInvoke(
+                        "getObjectIndex",
+                        "(Ljava/lang/Object;D"
+                        +"Lorg/mozilla/javascript/Context;"
+                        +")Ljava/lang/Object;");
+                }
+                else {
+                    addScriptRuntimeInvoke(
+                        "getObjectElem",
+                        "(Ljava/lang/Object;"
+                        +"Ljava/lang/Object;"
+                        +"Lorg/mozilla/javascript/Context;"
+                        +")Ljava/lang/Object;");
+                }
+                break;
+
+              case Token.GET_REF:
+                generateExpression(child, node); // reference
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke(
+                    "refGet",
+                    "(Lorg/mozilla/javascript/Ref;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Ljava/lang/Object;");
+                break;
+
+              case Token.GETVAR:
+                visitGetVar(node);
+                break;
+
+              case Token.SETVAR:
+                visitSetVar(node, child, true);
+                break;
+
+              case Token.SETNAME:
+                visitSetName(node, child);
+                break;
+
+              case Token.SETCONST:
+                visitSetConst(node, child);
+                break;
+
+              case Token.SETCONSTVAR:
+                visitSetConstVar(node, child, true);
+                break;
+
+              case Token.SETPROP:
+              case Token.SETPROP_OP:
+                visitSetProp(type, node, child);
+                break;
+
+              case Token.SETELEM:
+              case Token.SETELEM_OP:
+                visitSetElem(type, node, child);
+                break;
+
+              case Token.SET_REF:
+              case Token.SET_REF_OP:
+                {
+                    generateExpression(child, node);
+                    child = child.getNext();
+                    if (type == Token.SET_REF_OP) {
+                        cfw.add(ByteCode.DUP);
+                        cfw.addALoad(contextLocal);
+                        addScriptRuntimeInvoke(
+                            "refGet",
+                            "(Lorg/mozilla/javascript/Ref;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +")Ljava/lang/Object;");
+                    }
+                    generateExpression(child, node);
+                    cfw.addALoad(contextLocal);
+                    addScriptRuntimeInvoke(
+                        "refSet",
+                        "(Lorg/mozilla/javascript/Ref;"
+                        +"Ljava/lang/Object;"
+                        +"Lorg/mozilla/javascript/Context;"
+                        +")Ljava/lang/Object;");
+                }
+                break;
+
+              case Token.DEL_REF:
+                generateExpression(child, node);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke("refDel",
+                                       "(Lorg/mozilla/javascript/Ref;"
+                                       +"Lorg/mozilla/javascript/Context;"
+                                       +")Ljava/lang/Object;");
+                break;
+
+              case Token.DELPROP:
+                generateExpression(child, node);
+                child = child.getNext();
+                generateExpression(child, node);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke("delete",
+                                       "(Ljava/lang/Object;"
+                                       +"Ljava/lang/Object;"
+                                       +"Lorg/mozilla/javascript/Context;"
+                                       +")Ljava/lang/Object;");
+                break;
+
+              case Token.BINDNAME:
+                {
+                    while (child != null) {
+                        generateExpression(child, node);
+                        child = child.getNext();
+                    }
+                    // Generate code for "ScriptRuntime.bind(varObj, "s")"
+                    cfw.addALoad(contextLocal);
+                    cfw.addALoad(variableObjectLocal);
+                    cfw.addPush(node.getString());
+                    addScriptRuntimeInvoke(
+                        "bind",
+                        "(Lorg/mozilla/javascript/Context;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +"Ljava/lang/String;"
+                        +")Lorg/mozilla/javascript/Scriptable;");
+                }
+                break;
+
+              case Token.LOCAL_LOAD:
+                cfw.addALoad(getLocalBlockRegister(node));
+                break;
+
+              case Token.REF_SPECIAL:
+                {
+                    String special = (String)node.getProp(Node.NAME_PROP);
+                    generateExpression(child, node);
+                    cfw.addPush(special);
+                    cfw.addALoad(contextLocal);
+                    addScriptRuntimeInvoke(
+                        "specialRef",
+                        "(Ljava/lang/Object;"
+                        +"Ljava/lang/String;"
+                        +"Lorg/mozilla/javascript/Context;"
+                        +")Lorg/mozilla/javascript/Ref;");
+                }
+                break;
+
+              case Token.REF_MEMBER:
+              case Token.REF_NS_MEMBER:
+              case Token.REF_NAME:
+              case Token.REF_NS_NAME:
+                {
+                    int memberTypeFlags
+                        = node.getIntProp(Node.MEMBER_TYPE_PROP, 0);
+                    // generate possible target, possible namespace and member
+                    do {
+                        generateExpression(child, node);
+                        child = child.getNext();
+                    } while (child != null);
+                    cfw.addALoad(contextLocal);
+                    String methodName, signature;
+                    switch (type) {
+                      case Token.REF_MEMBER:
+                        methodName = "memberRef";
+                        signature = "(Ljava/lang/Object;"
+                                    +"Ljava/lang/Object;"
+                                    +"Lorg/mozilla/javascript/Context;"
+                                    +"I"
+                                    +")Lorg/mozilla/javascript/Ref;";
+                        break;
+                      case Token.REF_NS_MEMBER:
+                        methodName = "memberRef";
+                        signature = "(Ljava/lang/Object;"
+                                    +"Ljava/lang/Object;"
+                                    +"Ljava/lang/Object;"
+                                    +"Lorg/mozilla/javascript/Context;"
+                                    +"I"
+                                    +")Lorg/mozilla/javascript/Ref;";
+                        break;
+                      case Token.REF_NAME:
+                        methodName = "nameRef";
+                        signature = "(Ljava/lang/Object;"
+                                    +"Lorg/mozilla/javascript/Context;"
+                                    +"Lorg/mozilla/javascript/Scriptable;"
+                                    +"I"
+                                    +")Lorg/mozilla/javascript/Ref;";
+                        cfw.addALoad(variableObjectLocal);
+                        break;
+                      case Token.REF_NS_NAME:
+                        methodName = "nameRef";
+                        signature = "(Ljava/lang/Object;"
+                                    +"Lorg/mozilla/javascript/Context;"
+                                    +"Lorg/mozilla/javascript/Scriptable;"
+                                    +"I"
+                                    +")Lorg/mozilla/javascript/Ref;";
+                        cfw.addALoad(variableObjectLocal);
+                        break;
+                      default:
+                        throw Kit.codeBug();
+                    }
+                    cfw.addPush(memberTypeFlags);
+                    addScriptRuntimeInvoke(methodName, signature);
+                }
+                break;
+
+              case Token.DOTQUERY:
+                visitDotQuery(node, child);
+                break;
+
+              case Token.ESCXMLATTR:
+                generateExpression(child, node);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke("escapeAttributeValue",
+                                       "(Ljava/lang/Object;"
+                                       +"Lorg/mozilla/javascript/Context;"
+                                       +")Ljava/lang/String;");
+                break;
+
+              case Token.ESCXMLTEXT:
+                generateExpression(child, node);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke("escapeTextValue",
+                                       "(Ljava/lang/Object;"
+                                       +"Lorg/mozilla/javascript/Context;"
+                                       +")Ljava/lang/String;");
+                break;
+
+              case Token.DEFAULTNAMESPACE:
+                generateExpression(child, node);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke("setDefaultNamespace",
+                                       "(Ljava/lang/Object;"
+                                       +"Lorg/mozilla/javascript/Context;"
+                                       +")Ljava/lang/Object;");
+                break;
+
+              case Token.YIELD:
+                generateYieldPoint(node, true);
+                break;
+
+              case Token.WITHEXPR: {
+                Node enterWith = child;
+                Node with = enterWith.getNext();
+                Node leaveWith = with.getNext();
+                generateStatement(enterWith);
+                generateExpression(with.getFirstChild(), with);
+                generateStatement(leaveWith);
+                break;
+              }
+              
+              case Token.ARRAYCOMP: {
+                Node initStmt = child;
+                Node expr = child.getNext();
+                generateStatement(initStmt);
+                generateExpression(expr, node);
+                break;
+              }
+              
+              default:
+                throw new RuntimeException("Unexpected node type "+type);
+        }
+
+    }
+
+    private void generateYieldPoint(Node node, boolean exprContext) {
+        // save stack state
+        int top = cfw.getStackTop();
+        maxStack = maxStack > top ? maxStack : top;
+        if (cfw.getStackTop() != 0) {
+            generateGetGeneratorStackState();
+            for (int i = 0; i < top; i++) {
+                cfw.add(ByteCode.DUP_X1);
+                cfw.add(ByteCode.SWAP);
+                cfw.addLoadConstant(i);
+                cfw.add(ByteCode.SWAP);
+                cfw.add(ByteCode.AASTORE);
+            }
+            // pop the array object
+            cfw.add(ByteCode.POP);
+        }
+
+        // generate the yield argument
+        Node child = node.getFirstChild();
+        if (child != null)
+            generateExpression(child, node);
+        else
+            Codegen.pushUndefined(cfw);
+
+        // change the resumption state
+        int nextState = getNextGeneratorState(node);
+        generateSetGeneratorResumptionPoint(nextState);
+
+        boolean hasLocals = generateSaveLocals(node);
+
+        cfw.add(ByteCode.ARETURN);
+
+        generateCheckForThrowOrClose(getTargetLabel(node),
+                hasLocals, nextState);
+
+        // reconstruct the stack
+        if (top != 0) {
+            generateGetGeneratorStackState();
+            for (int i = 0; i < top; i++) {
+                cfw.add(ByteCode.DUP);
+                cfw.addLoadConstant(top - i - 1);
+                cfw.add(ByteCode.AALOAD);
+                cfw.add(ByteCode.SWAP);
+            }
+            cfw.add(ByteCode.POP);
+        }
+
+        // load return value from yield
+        if (exprContext) {
+            cfw.addALoad(argsLocal);
+        }
+    }
+
+    private void generateCheckForThrowOrClose(int label,
+                                              boolean hasLocals,
+                                              int nextState) {
+        int throwLabel = cfw.acquireLabel();
+        int closeLabel = cfw.acquireLabel();
+
+        // throw the user provided object, if the operation is .throw()
+        cfw.markLabel(throwLabel);
+        cfw.addALoad(argsLocal);
+        generateThrowJavaScriptException();
+
+        // throw our special internal exception if the generator is being closed
+        cfw.markLabel(closeLabel);
+        cfw.addALoad(argsLocal);
+        cfw.add(ByteCode.CHECKCAST, "java/lang/Throwable");
+        cfw.add(ByteCode.ATHROW);
+
+        // mark the re-entry point
+        // jump here after initializing the locals
+        if (label != -1)
+            cfw.markLabel(label);
+        if (!hasLocals) {
+            // jump here directly if there are no locals
+            cfw.markTableSwitchCase(generatorSwitch, nextState);
+        }
+
+        // see if we need to dispatch for .close() or .throw()
+        cfw.addILoad(operationLocal);
+        cfw.addLoadConstant(NativeGenerator.GENERATOR_CLOSE);
+        cfw.add(ByteCode.IF_ICMPEQ, closeLabel);
+        cfw.addILoad(operationLocal);
+        cfw.addLoadConstant(NativeGenerator.GENERATOR_THROW);
+        cfw.add(ByteCode.IF_ICMPEQ, throwLabel);
+    }
+
+    private void generateIfJump(Node node, Node parent,
+                                int trueLabel, int falseLabel)
+    {
+        // System.out.println("gen code for " + node.toString());
+
+        int type = node.getType();
+        Node child = node.getFirstChild();
+
+        switch (type) {
+          case Token.NOT:
+            generateIfJump(child, node, falseLabel, trueLabel);
+            break;
+
+          case Token.OR:
+          case Token.AND: {
+            int interLabel = cfw.acquireLabel();
+            if (type == Token.AND) {
+                generateIfJump(child, node, interLabel, falseLabel);
+            }
+            else {
+                generateIfJump(child, node, trueLabel, interLabel);
+            }
+            cfw.markLabel(interLabel);
+            child = child.getNext();
+            generateIfJump(child, node, trueLabel, falseLabel);
+            break;
+          }
+
+          case Token.IN:
+          case Token.INSTANCEOF:
+          case Token.LE:
+          case Token.LT:
+          case Token.GE:
+          case Token.GT:
+            visitIfJumpRelOp(node, child, trueLabel, falseLabel);
+            break;
+
+          case Token.EQ:
+          case Token.NE:
+          case Token.SHEQ:
+          case Token.SHNE:
+            visitIfJumpEqOp(node, child, trueLabel, falseLabel);
+            break;
+
+          default:
+            // Generate generic code for non-optimized jump
+            generateExpression(node, parent);
+            addScriptRuntimeInvoke("toBoolean", "(Ljava/lang/Object;)Z");
+            cfw.add(ByteCode.IFNE, trueLabel);
+            cfw.add(ByteCode.GOTO, falseLabel);
+        }
+    }
+
+    private void visitFunction(OptFunctionNode ofn, int functionType)
+    {
+        int fnIndex = codegen.getIndex(ofn.fnode);
+        cfw.add(ByteCode.NEW, codegen.mainClassName);
+        // Call function constructor
+        cfw.add(ByteCode.DUP);
+        cfw.addALoad(variableObjectLocal);
+        cfw.addALoad(contextLocal);           // load 'cx'
+        cfw.addPush(fnIndex);
+        cfw.addInvoke(ByteCode.INVOKESPECIAL, codegen.mainClassName,
+                      "<init>", Codegen.FUNCTION_CONSTRUCTOR_SIGNATURE);
+
+        // Init mainScript field;
+        cfw.add(ByteCode.DUP);
+        if (isTopLevel) {
+            cfw.add(ByteCode.ALOAD_0);
+        } else {
+            cfw.add(ByteCode.ALOAD_0);
+            cfw.add(ByteCode.GETFIELD,
+                    codegen.mainClassName,
+                    Codegen.DIRECT_CALL_PARENT_FIELD,
+                    codegen.mainClassSignature);
+        }
+        cfw.add(ByteCode.PUTFIELD,
+                codegen.mainClassName,
+                Codegen.DIRECT_CALL_PARENT_FIELD,
+                codegen.mainClassSignature);
+
+        int directTargetIndex = ofn.getDirectTargetIndex();
+        if (directTargetIndex >= 0) {
+            cfw.add(ByteCode.DUP);
+            if (isTopLevel) {
+                cfw.add(ByteCode.ALOAD_0);
+            } else {
+                cfw.add(ByteCode.ALOAD_0);
+                cfw.add(ByteCode.GETFIELD,
+                        codegen.mainClassName,
+                        Codegen.DIRECT_CALL_PARENT_FIELD,
+                        codegen.mainClassSignature);
+            }
+            cfw.add(ByteCode.SWAP);
+            cfw.add(ByteCode.PUTFIELD,
+                    codegen.mainClassName,
+                    Codegen.getDirectTargetFieldName(directTargetIndex),
+                    codegen.mainClassSignature);
+        }
+
+        if (functionType == FunctionNode.FUNCTION_EXPRESSION) {
+            // Leave closure object on stack and do not pass it to
+            // initFunction which suppose to connect statements to scope
+            return;
+        }
+        cfw.addPush(functionType);
+        cfw.addALoad(variableObjectLocal);
+        cfw.addALoad(contextLocal);           // load 'cx'
+        addOptRuntimeInvoke("initFunction",
+                            "(Lorg/mozilla/javascript/NativeFunction;"
+                            +"I"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +")V");
+    }
+
+    private int getTargetLabel(Node target)
+    {
+        int labelId = target.labelId();
+        if (labelId == -1) {
+            labelId = cfw.acquireLabel();
+            target.labelId(labelId);
+        }
+        return labelId;
+    }
+
+    private void visitGoto(Node.Jump node, int type, Node child)
+    {
+        Node target = node.target;
+        if (type == Token.IFEQ || type == Token.IFNE) {
+            if (child == null) throw Codegen.badTree();
+            int targetLabel = getTargetLabel(target);
+            int fallThruLabel = cfw.acquireLabel();
+            if (type == Token.IFEQ)
+                generateIfJump(child, node, targetLabel, fallThruLabel);
+            else
+                generateIfJump(child, node, fallThruLabel, targetLabel);
+            cfw.markLabel(fallThruLabel);
+        } else {
+            if (type == Token.JSR) {
+                if (isGenerator) {
+                    addGotoWithReturn(target);
+                } else {
+                    addGoto(target, ByteCode.JSR);
+                }
+            } else {
+                addGoto(target, ByteCode.GOTO);
+            }
+        }
+    }
+
+    private void addGotoWithReturn(Node target) {
+        FinallyReturnPoint ret =
+                (FinallyReturnPoint)finallys.get(target);
+        cfw.addLoadConstant(ret.jsrPoints.size());
+        addGoto(target, ByteCode.GOTO);
+        int retLabel = cfw.acquireLabel();
+        cfw.markLabel(retLabel);
+        ret.jsrPoints.add(Integer.valueOf(retLabel));
+    }
+
+    private void visitArrayLiteral(Node node, Node child)
+    {
+        int count = 0;
+        for (Node cursor = child; cursor != null; cursor = cursor.getNext()) {
+            ++count;
+        }
+        // load array to store array literal objects
+        addNewObjectArray(count);
+        for (int i = 0; i != count; ++i) {
+            cfw.add(ByteCode.DUP);
+            cfw.addPush(i);
+            generateExpression(child, node);
+            cfw.add(ByteCode.AASTORE);
+            child = child.getNext();
+        }
+        int[] skipIndexes = (int[])node.getProp(Node.SKIP_INDEXES_PROP);
+        if (skipIndexes == null) {
+            cfw.add(ByteCode.ACONST_NULL);
+            cfw.add(ByteCode.ICONST_0);
+        } else {
+            cfw.addPush(OptRuntime.encodeIntArray(skipIndexes));
+            cfw.addPush(skipIndexes.length);
+        }
+        cfw.addALoad(contextLocal);
+        cfw.addALoad(variableObjectLocal);
+        addOptRuntimeInvoke("newArrayLiteral",
+             "([Ljava/lang/Object;"
+             +"Ljava/lang/String;"
+             +"I"
+             +"Lorg/mozilla/javascript/Context;"
+             +"Lorg/mozilla/javascript/Scriptable;"
+             +")Lorg/mozilla/javascript/Scriptable;");
+    }
+
+    private void visitObjectLiteral(Node node, Node child)
+    {
+        Object[] properties = (Object[])node.getProp(Node.OBJECT_IDS_PROP);
+        int count = properties.length;
+
+        // load array with property ids
+        addNewObjectArray(count);
+        for (int i = 0; i != count; ++i) {
+            cfw.add(ByteCode.DUP);
+            cfw.addPush(i);
+            Object id = properties[i];
+            if (id instanceof String) {
+                cfw.addPush((String)id);
+            } else {
+                cfw.addPush(((Integer)id).intValue());
+                addScriptRuntimeInvoke("wrapInt", "(I)Ljava/lang/Integer;");
+            }
+            cfw.add(ByteCode.AASTORE);
+        }
+        // load array with property values
+        addNewObjectArray(count);
+        Node child2 = child;
+        for (int i = 0; i != count; ++i) {
+            cfw.add(ByteCode.DUP);
+            cfw.addPush(i);
+            int childType = child.getType();
+            if (childType == Token.GET) {
+                generateExpression(child.getFirstChild(), node);
+            } else if (childType == Token.SET) {
+                generateExpression(child.getFirstChild(), node);
+            } else {
+                generateExpression(child, node);
+            }
+            cfw.add(ByteCode.AASTORE);
+            child = child.getNext();
+        }
+        // load array with getterSetter values
+        cfw.addPush(count);
+        cfw.add(ByteCode.NEWARRAY, ByteCode.T_INT);
+        for (int i = 0; i != count; ++i) {
+            cfw.add(ByteCode.DUP);
+            cfw.addPush(i);
+            int childType = child2.getType();
+            if (childType == Token.GET) {
+                cfw.add(ByteCode.ICONST_M1);
+            } else if (childType == Token.SET) {
+                cfw.add(ByteCode.ICONST_1);
+            } else {
+                cfw.add(ByteCode.ICONST_0);
+            }
+            cfw.add(ByteCode.IASTORE);
+            child2 = child2.getNext();
+        }
+
+        cfw.addALoad(contextLocal);
+        cfw.addALoad(variableObjectLocal);
+        addScriptRuntimeInvoke("newObjectLiteral",
+             "([Ljava/lang/Object;"
+             +"[Ljava/lang/Object;"
+             +"[I"
+             +"Lorg/mozilla/javascript/Context;"
+             +"Lorg/mozilla/javascript/Scriptable;"
+             +")Lorg/mozilla/javascript/Scriptable;");
+    }
+
+    private void visitSpecialCall(Node node, int type, int specialType,
+                                  Node child)
+    {
+        cfw.addALoad(contextLocal);
+
+        if (type == Token.NEW) {
+            generateExpression(child, node);
+            // stack: ... cx functionObj
+        } else {
+            generateFunctionAndThisObj(child, node);
+            // stack: ... cx functionObj thisObj
+        }
+        child = child.getNext();
+
+        generateCallArgArray(node, child, false);
+
+        String methodName;
+        String callSignature;
+
+        if (type == Token.NEW) {
+            methodName = "newObjectSpecial";
+            callSignature = "(Lorg/mozilla/javascript/Context;"
+                            +"Ljava/lang/Object;"
+                            +"[Ljava/lang/Object;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"I" // call type
+                            +")Ljava/lang/Object;";
+            cfw.addALoad(variableObjectLocal);
+            cfw.addALoad(thisObjLocal);
+            cfw.addPush(specialType);
+        } else {
+            methodName = "callSpecial";
+            callSignature = "(Lorg/mozilla/javascript/Context;"
+                            +"Lorg/mozilla/javascript/Callable;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"[Ljava/lang/Object;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"I" // call type
+                            +"Ljava/lang/String;I"  // filename, linenumber
+                            +")Ljava/lang/Object;";
+            cfw.addALoad(variableObjectLocal);
+            cfw.addALoad(thisObjLocal);
+            cfw.addPush(specialType);
+            String sourceName = scriptOrFn.getSourceName();
+            cfw.addPush(sourceName == null ? "" : sourceName);
+            cfw.addPush(itsLineNumber);
+        }
+
+        addOptRuntimeInvoke(methodName, callSignature);
+    }
+
+    private void visitStandardCall(Node node, Node child)
+    {
+        if (node.getType() != Token.CALL) throw Codegen.badTree();
+
+        Node firstArgChild = child.getNext();
+        int childType = child.getType();
+
+        String methodName;
+        String signature;
+
+        if (firstArgChild == null) {
+            if (childType == Token.NAME) {
+                // name() call
+                String name = child.getString();
+                cfw.addPush(name);
+                methodName = "callName0";
+                signature = "(Ljava/lang/String;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +")Ljava/lang/Object;";
+            } else if (childType == Token.GETPROP) {
+                // x.name() call
+                Node propTarget = child.getFirstChild();
+                generateExpression(propTarget, node);
+                Node id = propTarget.getNext();
+                String property = id.getString();
+                cfw.addPush(property);
+                methodName = "callProp0";
+                signature = "(Ljava/lang/Object;"
+                            +"Ljava/lang/String;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +")Ljava/lang/Object;";
+            } else if (childType == Token.GETPROPNOWARN) {
+                throw Kit.codeBug();
+            } else {
+                generateFunctionAndThisObj(child, node);
+                methodName = "call0";
+                signature = "(Lorg/mozilla/javascript/Callable;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +")Ljava/lang/Object;";
+            }
+
+        } else if (childType == Token.NAME) {
+            // XXX: this optimization is only possible if name
+            // resolution
+            // is not affected by arguments evaluation and currently
+            // there are no checks for it
+            String name = child.getString();
+            generateCallArgArray(node, firstArgChild, false);
+            cfw.addPush(name);
+            methodName = "callName";
+            signature = "([Ljava/lang/Object;"
+                        +"Ljava/lang/String;"
+                        +"Lorg/mozilla/javascript/Context;"
+                        +"Lorg/mozilla/javascript/Scriptable;"
+                        +")Ljava/lang/Object;";
+        } else {
+            int argCount = 0;
+            for (Node arg = firstArgChild; arg != null; arg = arg.getNext()) {
+                ++argCount;
+            }
+            generateFunctionAndThisObj(child, node);
+            // stack: ... functionObj thisObj
+            if (argCount == 1) {
+                generateExpression(firstArgChild, node);
+                methodName = "call1";
+                signature = "(Lorg/mozilla/javascript/Callable;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"Ljava/lang/Object;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +")Ljava/lang/Object;";
+            } else if (argCount == 2) {
+                generateExpression(firstArgChild, node);
+                generateExpression(firstArgChild.getNext(), node);
+                methodName = "call2";
+                signature = "(Lorg/mozilla/javascript/Callable;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"Ljava/lang/Object;"
+                            +"Ljava/lang/Object;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +")Ljava/lang/Object;";
+            } else {
+                generateCallArgArray(node, firstArgChild, false);
+                methodName = "callN";
+                signature = "(Lorg/mozilla/javascript/Callable;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +"[Ljava/lang/Object;"
+                            +"Lorg/mozilla/javascript/Context;"
+                            +"Lorg/mozilla/javascript/Scriptable;"
+                            +")Ljava/lang/Object;";
+            }
+        }
+
+        cfw.addALoad(contextLocal);
+        cfw.addALoad(variableObjectLocal);
+        addOptRuntimeInvoke(methodName, signature);
+    }
+
+    private void visitStandardNew(Node node, Node child)
+    {
+        if (node.getType() != Token.NEW) throw Codegen.badTree();
+
+        Node firstArgChild = child.getNext();
+
+        generateExpression(child, node);
+        // stack: ... functionObj
+        cfw.addALoad(contextLocal);
+        cfw.addALoad(variableObjectLocal);
+        // stack: ... functionObj cx scope
+        generateCallArgArray(node, firstArgChild, false);
+        addScriptRuntimeInvoke(
+            "newObject",
+            "(Ljava/lang/Object;"
+            +"Lorg/mozilla/javascript/Context;"
+            +"Lorg/mozilla/javascript/Scriptable;"
+            +"[Ljava/lang/Object;"
+            +")Lorg/mozilla/javascript/Scriptable;");
+    }
+
+    private void visitOptimizedCall(Node node, OptFunctionNode target,
+                                    int type, Node child)
+    {
+        Node firstArgChild = child.getNext();
+
+        short thisObjLocal = 0;
+        if (type == Token.NEW) {
+            generateExpression(child, node);
+        } else {
+            generateFunctionAndThisObj(child, node);
+            thisObjLocal = getNewWordLocal();
+            cfw.addAStore(thisObjLocal);
+        }
+        // stack: ... functionObj
+
+        int beyond = cfw.acquireLabel();
+
+        int directTargetIndex = target.getDirectTargetIndex();
+        if (isTopLevel) {
+            cfw.add(ByteCode.ALOAD_0);
+        } else {
+            cfw.add(ByteCode.ALOAD_0);
+            cfw.add(ByteCode.GETFIELD, codegen.mainClassName,
+                    Codegen.DIRECT_CALL_PARENT_FIELD,
+                    codegen.mainClassSignature);
+        }
+        cfw.add(ByteCode.GETFIELD, codegen.mainClassName,
+                Codegen.getDirectTargetFieldName(directTargetIndex),
+                codegen.mainClassSignature);
+
+        cfw.add(ByteCode.DUP2);
+        // stack: ... functionObj directFunct functionObj directFunct
+
+        int regularCall = cfw.acquireLabel();
+        cfw.add(ByteCode.IF_ACMPNE, regularCall);
+
+        // stack: ... functionObj directFunct
+        short stackHeight = cfw.getStackTop();
+        cfw.add(ByteCode.SWAP);
+        cfw.add(ByteCode.POP);
+        // stack: ... directFunct
+        if (compilerEnv.isUseDynamicScope()) {
+            cfw.addALoad(contextLocal);
+            cfw.addALoad(variableObjectLocal);
+        } else {
+            cfw.add(ByteCode.DUP);
+            // stack: ... directFunct directFunct
+            cfw.addInvoke(ByteCode.INVOKEINTERFACE,
+                          "org/mozilla/javascript/Scriptable",
+                          "getParentScope",
+                          "()Lorg/mozilla/javascript/Scriptable;");
+            // stack: ... directFunct scope
+            cfw.addALoad(contextLocal);
+            // stack: ... directFunct scope cx
+            cfw.add(ByteCode.SWAP);
+        }
+        // stack: ... directFunc cx scope
+
+        if (type == Token.NEW) {
+            cfw.add(ByteCode.ACONST_NULL);
+        } else {
+            cfw.addALoad(thisObjLocal);
+        }
+        // stack: ... directFunc cx scope thisObj
+/*
+Remember that directCall parameters are paired in 1 aReg and 1 dReg
+If the argument is an incoming arg, just pass the orginal pair thru.
+Else, if the argument is known to be typed 'Number', pass Void.TYPE
+in the aReg and the number is the dReg
+Else pass the JS object in the aReg and 0.0 in the dReg.
+*/
+        Node argChild = firstArgChild;
+        while (argChild != null) {
+            int dcp_register = nodeIsDirectCallParameter(argChild);
+            if (dcp_register >= 0) {
+                cfw.addALoad(dcp_register);
+                cfw.addDLoad(dcp_register + 1);
+            } else if (argChild.getIntProp(Node.ISNUMBER_PROP, -1)
+                       == Node.BOTH)
+            {
+                cfw.add(ByteCode.GETSTATIC,
+                        "java/lang/Void",
+                        "TYPE",
+                        "Ljava/lang/Class;");
+                generateExpression(argChild, node);
+            } else {
+                generateExpression(argChild, node);
+                cfw.addPush(0.0);
+            }
+            argChild = argChild.getNext();
+        }
+
+        cfw.add(ByteCode.GETSTATIC,
+                "org/mozilla/javascript/ScriptRuntime",
+                "emptyArgs", "[Ljava/lang/Object;");
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      codegen.mainClassName,
+                      (type == Token.NEW)
+                          ? codegen.getDirectCtorName(target.fnode)
+                          : codegen.getBodyMethodName(target.fnode),
+                      codegen.getBodyMethodSignature(target.fnode));
+
+        cfw.add(ByteCode.GOTO, beyond);
+
+        cfw.markLabel(regularCall, stackHeight);
+        // stack: ... functionObj directFunct
+        cfw.add(ByteCode.POP);
+        cfw.addALoad(contextLocal);
+        cfw.addALoad(variableObjectLocal);
+        // stack: ... functionObj cx scope
+        if (type != Token.NEW) {
+            cfw.addALoad(thisObjLocal);
+            releaseWordLocal(thisObjLocal);
+            // stack: ... functionObj cx scope thisObj
+        }
+        // XXX: this will generate code for the child array the second time,
+        // so expression code generation better not to alter tree structure...
+        generateCallArgArray(node, firstArgChild, true);
+
+        if (type == Token.NEW) {
+            addScriptRuntimeInvoke(
+                "newObject",
+                "(Ljava/lang/Object;"
+                +"Lorg/mozilla/javascript/Context;"
+                +"Lorg/mozilla/javascript/Scriptable;"
+                +"[Ljava/lang/Object;"
+                +")Lorg/mozilla/javascript/Scriptable;");
+        } else {
+            cfw.addInvoke(ByteCode.INVOKEINTERFACE,
+                "org/mozilla/javascript/Callable",
+                "call",
+                "(Lorg/mozilla/javascript/Context;"
+                +"Lorg/mozilla/javascript/Scriptable;"
+                +"Lorg/mozilla/javascript/Scriptable;"
+                +"[Ljava/lang/Object;"
+                +")Ljava/lang/Object;");
+        }
+
+        cfw.markLabel(beyond);
+    }
+
+    private void generateCallArgArray(Node node, Node argChild, boolean directCall)
+    {
+        int argCount = 0;
+        for (Node child = argChild; child != null; child = child.getNext()) {
+            ++argCount;
+        }
+        // load array object to set arguments
+        if (argCount == 1 && itsOneArgArray >= 0) {
+            cfw.addALoad(itsOneArgArray);
+        } else {
+            addNewObjectArray(argCount);
+        }
+        // Copy arguments into it
+        for (int i = 0; i != argCount; ++i) {
+            // If we are compiling a generator an argument could be the result
+            // of a yield. In that case we will have an immediate on the stack
+            // which we need to avoid
+            if (!isGenerator) {
+                cfw.add(ByteCode.DUP);
+                cfw.addPush(i);
+            }
+
+            if (!directCall) {
+                generateExpression(argChild, node);
+            } else {
+                // If this has also been a directCall sequence, the Number
+                // flag will have remained set for any parameter so that
+                // the values could be copied directly into the outgoing
+                // args. Here we want to force it to be treated as not in
+                // a Number context, so we set the flag off.
+                int dcp_register = nodeIsDirectCallParameter(argChild);
+                if (dcp_register >= 0) {
+                    dcpLoadAsObject(dcp_register);
+                } else {
+                    generateExpression(argChild, node);
+                    int childNumberFlag
+                            = argChild.getIntProp(Node.ISNUMBER_PROP, -1);
+                    if (childNumberFlag == Node.BOTH) {
+                        addDoubleWrap();
+                    }
+                }
+            }
+
+            // When compiling generators, any argument to a method may be a
+            // yield expression. Hence we compile the argument first and then
+            // load the argument index and assign the value to the args array.
+            if (isGenerator) {
+                short tempLocal = getNewWordLocal();
+                cfw.addAStore(tempLocal);
+                cfw.add(ByteCode.CHECKCAST, "[Ljava/lang/Object;");
+                cfw.add(ByteCode.DUP);
+                cfw.addPush(i);
+                cfw.addALoad(tempLocal);
+                releaseWordLocal(tempLocal);
+            }
+            
+            cfw.add(ByteCode.AASTORE);
+
+            argChild = argChild.getNext();
+        }
+    }
+
+    private void generateFunctionAndThisObj(Node node, Node parent)
+    {
+        // Place on stack (function object, function this) pair
+        int type = node.getType();
+        switch (node.getType()) {
+          case Token.GETPROPNOWARN:
+            throw Kit.codeBug();
+
+          case Token.GETPROP:
+          case Token.GETELEM: {
+            Node target = node.getFirstChild();
+            generateExpression(target, node);
+            Node id = target.getNext();
+            if (type == Token.GETPROP) {
+                String property = id.getString();
+                cfw.addPush(property);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke(
+                    "getPropFunctionAndThis",
+                    "(Ljava/lang/Object;"
+                    +"Ljava/lang/String;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Lorg/mozilla/javascript/Callable;");
+            } else {
+                // Optimizer do not optimize this case for now
+                if (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1)
+                    throw Codegen.badTree();
+                generateExpression(id, node);  // id
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke(
+                    "getElemFunctionAndThis",
+                    "(Ljava/lang/Object;"
+                    +"Ljava/lang/Object;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Lorg/mozilla/javascript/Callable;");
+            }
+            break;
+          }
+
+          case Token.NAME: {
+            String name = node.getString();
+            cfw.addPush(name);
+            cfw.addALoad(contextLocal);
+            cfw.addALoad(variableObjectLocal);
+            addScriptRuntimeInvoke(
+                "getNameFunctionAndThis",
+                "(Ljava/lang/String;"
+                +"Lorg/mozilla/javascript/Context;"
+                +"Lorg/mozilla/javascript/Scriptable;"
+                +")Lorg/mozilla/javascript/Callable;");
+            break;
+          }
+
+          default: // including GETVAR
+            generateExpression(node, parent);
+            cfw.addALoad(contextLocal);
+            addScriptRuntimeInvoke(
+                "getValueFunctionAndThis",
+                "(Ljava/lang/Object;"
+                +"Lorg/mozilla/javascript/Context;"
+                +")Lorg/mozilla/javascript/Callable;");
+            break;
+        }
+        // Get thisObj prepared by get(Name|Prop|Elem|Value)FunctionAndThis
+        cfw.addALoad(contextLocal);
+        addScriptRuntimeInvoke(
+            "lastStoredScriptable",
+            "(Lorg/mozilla/javascript/Context;"
+            +")Lorg/mozilla/javascript/Scriptable;");
+    }
+
+    private void updateLineNumber(Node node)
+    {
+        itsLineNumber = node.getLineno();
+        if (itsLineNumber == -1)
+            return;
+        cfw.addLineNumberEntry((short)itsLineNumber);
+    }
+
+    private void visitTryCatchFinally(Node.Jump node, Node child)
+    {
+        /* Save the variable object, in case there are with statements
+         * enclosed by the try block and we catch some exception.
+         * We'll restore it for the catch block so that catch block
+         * statements get the right scope.
+         */
+
+        // OPT we only need to do this if there are enclosed WITH
+        // statements; could statically check and omit this if there aren't any.
+
+        // XXX OPT Maybe instead do syntactic transforms to associate
+        // each 'with' with a try/finally block that does the exitwith.
+
+        short savedVariableObject = getNewWordLocal();
+        cfw.addALoad(variableObjectLocal);
+        cfw.addAStore(savedVariableObject);
+
+        /*
+         * Generate the code for the tree; most of the work is done in IRFactory
+         * and NodeTransformer;  Codegen just adds the java handlers for the
+         * javascript catch and finally clauses.  */
+
+        int startLabel = cfw.acquireLabel();
+        cfw.markLabel(startLabel, (short)0);
+
+        Node catchTarget = node.target;
+        Node finallyTarget = node.getFinally();
+
+        // create a table for the equivalent of JSR returns
+        if (isGenerator && finallyTarget != null) {
+            FinallyReturnPoint ret = new FinallyReturnPoint();
+            if (finallys == null) {
+                finallys = new Hashtable();
+            }
+            // add the finally target to hashtable
+            finallys.put(finallyTarget, ret);
+            // add the finally node as well to the hash table
+            finallys.put(finallyTarget.getNext(), ret);
+        }
+
+        while (child != null) {
+            generateStatement(child);
+            child = child.getNext();
+        }
+
+        // control flow skips the handlers
+        int realEnd = cfw.acquireLabel();
+        cfw.add(ByteCode.GOTO, realEnd);
+
+        int exceptionLocal = getLocalBlockRegister(node);
+        // javascript handler; unwrap exception and GOTO to javascript
+        // catch area.
+        if (catchTarget != null) {
+            // get the label to goto
+            int catchLabel = catchTarget.labelId();
+
+            generateCatchBlock(JAVASCRIPT_EXCEPTION, savedVariableObject,
+                               catchLabel, startLabel, exceptionLocal);
+            /*
+             * catch WrappedExceptions, see if they are wrapped
+             * JavaScriptExceptions. Otherwise, rethrow.
+             */
+            generateCatchBlock(EVALUATOR_EXCEPTION, savedVariableObject,
+                               catchLabel, startLabel, exceptionLocal);
+
+            /*
+                we also need to catch EcmaErrors and feed the
+                associated error object to the handler
+            */
+            generateCatchBlock(ECMAERROR_EXCEPTION, savedVariableObject,
+                               catchLabel, startLabel, exceptionLocal);
+
+            Context cx = Context.getCurrentContext();
+            if (cx != null &&
+                cx.hasFeature(Context.FEATURE_ENHANCED_JAVA_ACCESS))
+            {
+                generateCatchBlock(THROWABLE_EXCEPTION, savedVariableObject,
+                                   catchLabel, startLabel, exceptionLocal);
+            }
+        }
+
+        // finally handler; catch all exceptions, store to a local; JSR to
+        // the finally, then re-throw.
+        if (finallyTarget != null) {
+            int finallyHandler = cfw.acquireLabel();
+            cfw.markHandler(finallyHandler);
+            cfw.addAStore(exceptionLocal);
+
+            // reset the variable object local
+            cfw.addALoad(savedVariableObject);
+            cfw.addAStore(variableObjectLocal);
+
+            // get the label to JSR to
+            int finallyLabel = finallyTarget.labelId();
+            if (isGenerator)
+                addGotoWithReturn(finallyTarget);
+            else
+                cfw.add(ByteCode.JSR, finallyLabel);
+
+            // rethrow
+            cfw.addALoad(exceptionLocal);
+            if (isGenerator)
+                cfw.add(ByteCode.CHECKCAST, "java/lang/Throwable");
+            cfw.add(ByteCode.ATHROW);
+
+            // mark the handler
+            cfw.addExceptionHandler(startLabel, finallyLabel,
+                                    finallyHandler, null); // catch any
+        }
+        releaseWordLocal(savedVariableObject);
+        cfw.markLabel(realEnd);
+    }
+
+    private static final int JAVASCRIPT_EXCEPTION  = 0;
+    private static final int EVALUATOR_EXCEPTION   = 1;
+    private static final int ECMAERROR_EXCEPTION   = 2;
+    private static final int THROWABLE_EXCEPTION   = 3;
+
+    private void generateCatchBlock(int exceptionType,
+                                    short savedVariableObject,
+                                    int catchLabel, int startLabel,
+                                    int exceptionLocal)
+    {
+        int handler = cfw.acquireLabel();
+        cfw.markHandler(handler);
+
+        // MS JVM gets cranky if the exception object is left on the stack
+        cfw.addAStore(exceptionLocal);
+
+        // reset the variable object local
+        cfw.addALoad(savedVariableObject);
+        cfw.addAStore(variableObjectLocal);
+
+        String exceptionName;
+        if (exceptionType == JAVASCRIPT_EXCEPTION) {
+            exceptionName = "org/mozilla/javascript/JavaScriptException";
+        } else if (exceptionType == EVALUATOR_EXCEPTION) {
+            exceptionName = "org/mozilla/javascript/EvaluatorException";
+        } else if (exceptionType == ECMAERROR_EXCEPTION) {
+            exceptionName = "org/mozilla/javascript/EcmaError";
+        } else if (exceptionType == THROWABLE_EXCEPTION) {
+            exceptionName = "java/lang/Throwable";
+        } else {
+            throw Kit.codeBug();
+        }
+
+        // mark the handler
+        cfw.addExceptionHandler(startLabel, catchLabel, handler,
+                                exceptionName);
+
+        cfw.add(ByteCode.GOTO, catchLabel);
+    }
+
+
+    private boolean generateSaveLocals(Node node)
+    {
+        int count = 0;
+        for (int i = 0; i < firstFreeLocal; i++) {
+            if (locals[i] != 0)
+                count++;
+        }
+
+        if (count == 0) {
+            ((FunctionNode)scriptOrFn).addLiveLocals(node, null);
+            return false;
+        }
+
+        // calculate the max locals
+        maxLocals = maxLocals > count ? maxLocals : count;
+
+        // create a locals list
+        int[] ls = new int[count];
+        int s = 0;
+        for (int i = 0; i < firstFreeLocal; i++) {
+            if (locals[i] != 0) {
+                ls[s] = i;
+                s++;
+            }
+        }
+
+        // save the locals
+        ((FunctionNode)scriptOrFn).addLiveLocals(node, ls);
+
+        // save locals
+        generateGetGeneratorLocalsState();
+        for (int i = 0; i < count; i++) {
+            cfw.add(ByteCode.DUP);
+            cfw.addLoadConstant(i);
+            cfw.addALoad(ls[i]);
+            cfw.add(ByteCode.AASTORE);
+        }
+        // pop the array off the stack
+        cfw.add(ByteCode.POP);
+
+        return true;
+    }
+
+    private void visitSwitch(Node.Jump switchNode, Node child)
+    {
+        // See comments in IRFactory.createSwitch() for description
+        // of SWITCH node
+
+        generateExpression(child, switchNode);
+        // save selector value
+        short selector = getNewWordLocal();
+        cfw.addAStore(selector);
+
+        for (Node.Jump caseNode = (Node.Jump)child.getNext();
+             caseNode != null;
+             caseNode = (Node.Jump)caseNode.getNext())
+        {
+            if (caseNode.getType() != Token.CASE)
+                throw Codegen.badTree();
+            Node test = caseNode.getFirstChild();
+            generateExpression(test, caseNode);
+            cfw.addALoad(selector);
+            addScriptRuntimeInvoke("shallowEq",
+                                   "(Ljava/lang/Object;"
+                                   +"Ljava/lang/Object;"
+                                   +")Z");
+            addGoto(caseNode.target, ByteCode.IFNE);
+        }
+        releaseWordLocal(selector);
+    }
+
+    private void visitTypeofname(Node node)
+    {
+        if (hasVarsInRegs) {
+            int varIndex = fnCurrent.fnode.getIndexForNameNode(node);
+            if (varIndex >= 0) {
+                if (fnCurrent.isNumberVar(varIndex)) {
+                    cfw.addPush("number");
+                } else if (varIsDirectCallParameter(varIndex)) {
+                    int dcp_register = varRegisters[varIndex];
+                    cfw.addALoad(dcp_register);
+                    cfw.add(ByteCode.GETSTATIC, "java/lang/Void", "TYPE",
+                            "Ljava/lang/Class;");
+                    int isNumberLabel = cfw.acquireLabel();
+                    cfw.add(ByteCode.IF_ACMPEQ, isNumberLabel);
+                    short stack = cfw.getStackTop();
+                    cfw.addALoad(dcp_register);
+                    addScriptRuntimeInvoke("typeof",
+                                           "(Ljava/lang/Object;"
+                                           +")Ljava/lang/String;");
+                    int beyond = cfw.acquireLabel();
+                    cfw.add(ByteCode.GOTO, beyond);
+                    cfw.markLabel(isNumberLabel, stack);
+                    cfw.addPush("number");
+                    cfw.markLabel(beyond);
+                } else {
+                    cfw.addALoad(varRegisters[varIndex]);
+                    addScriptRuntimeInvoke("typeof",
+                                           "(Ljava/lang/Object;"
+                                           +")Ljava/lang/String;");
+                }
+                return;
+            }
+        }
+        cfw.addALoad(variableObjectLocal);
+        cfw.addPush(node.getString());
+        addScriptRuntimeInvoke("typeofName",
+                               "(Lorg/mozilla/javascript/Scriptable;"
+                               +"Ljava/lang/String;"
+                               +")Ljava/lang/String;");
+    }
+
+    /**
+     * Save the current code offset. This saved code offset is used to
+     * compute instruction counts in subsequent calls to
+     * {@link #addInstructionCount}.
+     */
+    private void saveCurrentCodeOffset() {
+        savedCodeOffset = cfw.getCurrentCodeOffset();
+    }
+
+    /**
+     * Generate calls to ScriptRuntime.addInstructionCount to keep track of
+     * executed instructions and call <code>observeInstructionCount()</code>
+     * if a threshold is exceeded.
+     */
+    private void addInstructionCount() {
+        int count = cfw.getCurrentCodeOffset() - savedCodeOffset;
+        if (count == 0)
+            return;
+        cfw.addALoad(contextLocal);
+        cfw.addPush(count);
+        addScriptRuntimeInvoke("addInstructionCount",
+                "(Lorg/mozilla/javascript/Context;"
+                +"I)V");
+    }
+
+    private void visitIncDec(Node node)
+    {
+        int incrDecrMask = node.getExistingIntProp(Node.INCRDECR_PROP);
+        Node child = node.getFirstChild();
+        switch (child.getType()) {
+          case Token.GETVAR:
+            if (!hasVarsInRegs) Kit.codeBug();
+            if (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1) {
+                boolean post = ((incrDecrMask & Node.POST_FLAG) != 0);
+                int varIndex = fnCurrent.getVarIndex(child);
+                short reg = varRegisters[varIndex];
+                int offset = varIsDirectCallParameter(varIndex) ? 1 : 0;
+                cfw.addDLoad(reg + offset);
+                if (post) {
+                    cfw.add(ByteCode.DUP2);
+                }
+                cfw.addPush(1.0);
+                if ((incrDecrMask & Node.DECR_FLAG) == 0) {
+                    cfw.add(ByteCode.DADD);
+                } else {
+                    cfw.add(ByteCode.DSUB);
+                }
+                if (!post) {
+                    cfw.add(ByteCode.DUP2);
+                }
+                cfw.addDStore(reg + offset);
+            } else {
+                boolean post = ((incrDecrMask & Node.POST_FLAG) != 0);
+                int varIndex = fnCurrent.getVarIndex(child);
+                short reg = varRegisters[varIndex];
+                cfw.addALoad(reg);
+                if (post) {
+                    cfw.add(ByteCode.DUP);
+                }
+                addObjectToDouble();
+                cfw.addPush(1.0);
+                if ((incrDecrMask & Node.DECR_FLAG) == 0) {
+                    cfw.add(ByteCode.DADD);
+                } else {
+                    cfw.add(ByteCode.DSUB);
+                }
+                addDoubleWrap();
+                if (!post) {
+                    cfw.add(ByteCode.DUP);
+                }
+                cfw.addAStore(reg);
+                break;
+            }
+            break;
+          case Token.NAME:
+            cfw.addALoad(variableObjectLocal);
+            cfw.addPush(child.getString());          // push name
+            cfw.addALoad(contextLocal);
+            cfw.addPush(incrDecrMask);
+            addScriptRuntimeInvoke("nameIncrDecr",
+                "(Lorg/mozilla/javascript/Scriptable;"
+                +"Ljava/lang/String;"
+                +"Lorg/mozilla/javascript/Context;"
+                +"I)Ljava/lang/Object;");
+            break;
+          case Token.GETPROPNOWARN:
+            throw Kit.codeBug();
+          case Token.GETPROP: {
+            Node getPropChild = child.getFirstChild();
+            generateExpression(getPropChild, node);
+            generateExpression(getPropChild.getNext(), node);
+            cfw.addALoad(contextLocal);
+            cfw.addPush(incrDecrMask);
+            addScriptRuntimeInvoke("propIncrDecr",
+                                   "(Ljava/lang/Object;"
+                                   +"Ljava/lang/String;"
+                                   +"Lorg/mozilla/javascript/Context;"
+                                   +"I)Ljava/lang/Object;");
+            break;
+          }
+          case Token.GETELEM: {
+            Node elemChild = child.getFirstChild();
+            generateExpression(elemChild, node);
+            generateExpression(elemChild.getNext(), node);
+            cfw.addALoad(contextLocal);
+            cfw.addPush(incrDecrMask);
+            if (elemChild.getNext().getIntProp(Node.ISNUMBER_PROP, -1) != -1) {
+              addOptRuntimeInvoke("elemIncrDecr",
+                  "(Ljava/lang/Object;"
+                  +"D"
+                  +"Lorg/mozilla/javascript/Context;"
+                  +"I"
+                  +")Ljava/lang/Object;");
+            } else {
+              addScriptRuntimeInvoke("elemIncrDecr",
+                  "(Ljava/lang/Object;"
+                  +"Ljava/lang/Object;"
+                  +"Lorg/mozilla/javascript/Context;"
+                  +"I"
+                  +")Ljava/lang/Object;");
+            }
+            break;
+          }
+          case Token.GET_REF: {
+            Node refChild = child.getFirstChild();
+            generateExpression(refChild, node);
+            cfw.addALoad(contextLocal);
+            cfw.addPush(incrDecrMask);
+            addScriptRuntimeInvoke(
+                "refIncrDecr",
+                "(Lorg/mozilla/javascript/Ref;"
+                +"Lorg/mozilla/javascript/Context;"
+                +"I)Ljava/lang/Object;");
+            break;
+          }
+          default:
+            Codegen.badTree();
+        }
+    }
+
+    private static boolean isArithmeticNode(Node node)
+    {
+        int type = node.getType();
+        return (type == Token.SUB)
+                  || (type == Token.MOD)
+                        || (type == Token.DIV)
+                              || (type == Token.MUL);
+    }
+
+    private void visitArithmetic(Node node, int opCode, Node child,
+                                 Node parent)
+    {
+        int childNumberFlag = node.getIntProp(Node.ISNUMBER_PROP, -1);
+        if (childNumberFlag != -1) {
+            generateExpression(child, node);
+            generateExpression(child.getNext(), node);
+            cfw.add(opCode);
+        }
+        else {
+            boolean childOfArithmetic = isArithmeticNode(parent);
+            generateExpression(child, node);
+            if (!isArithmeticNode(child))
+                addObjectToDouble();
+            generateExpression(child.getNext(), node);
+            if (!isArithmeticNode(child.getNext()))
+                  addObjectToDouble();
+            cfw.add(opCode);
+            if (!childOfArithmetic) {
+                addDoubleWrap();
+            }
+        }
+    }
+
+    private void visitBitOp(Node node, int type, Node child)
+    {
+        int childNumberFlag = node.getIntProp(Node.ISNUMBER_PROP, -1);
+        generateExpression(child, node);
+
+        // special-case URSH; work with the target arg as a long, so
+        // that we can return a 32-bit unsigned value, and call
+        // toUint32 instead of toInt32.
+        if (type == Token.URSH) {
+            addScriptRuntimeInvoke("toUint32", "(Ljava/lang/Object;)J");
+            generateExpression(child.getNext(), node);
+            addScriptRuntimeInvoke("toInt32", "(Ljava/lang/Object;)I");
+            // Looks like we need to explicitly mask the shift to 5 bits -
+            // LUSHR takes 6 bits.
+            cfw.addPush(31);
+            cfw.add(ByteCode.IAND);
+            cfw.add(ByteCode.LUSHR);
+            cfw.add(ByteCode.L2D);
+            addDoubleWrap();
+            return;
+        }
+        if (childNumberFlag == -1) {
+            addScriptRuntimeInvoke("toInt32", "(Ljava/lang/Object;)I");
+            generateExpression(child.getNext(), node);
+            addScriptRuntimeInvoke("toInt32", "(Ljava/lang/Object;)I");
+        }
+        else {
+            addScriptRuntimeInvoke("toInt32", "(D)I");
+            generateExpression(child.getNext(), node);
+            addScriptRuntimeInvoke("toInt32", "(D)I");
+        }
+        switch (type) {
+          case Token.BITOR:
+            cfw.add(ByteCode.IOR);
+            break;
+          case Token.BITXOR:
+            cfw.add(ByteCode.IXOR);
+            break;
+          case Token.BITAND:
+            cfw.add(ByteCode.IAND);
+            break;
+          case Token.RSH:
+            cfw.add(ByteCode.ISHR);
+            break;
+          case Token.LSH:
+            cfw.add(ByteCode.ISHL);
+            break;
+          default:
+            throw Codegen.badTree();
+        }
+        cfw.add(ByteCode.I2D);
+        if (childNumberFlag == -1) {
+            addDoubleWrap();
+        }
+    }
+
+    private int nodeIsDirectCallParameter(Node node)
+    {
+        if (node.getType() == Token.GETVAR
+            && inDirectCallFunction && !itsForcedObjectParameters)
+        {
+            int varIndex = fnCurrent.getVarIndex(node);
+            if (fnCurrent.isParameter(varIndex)) {
+                return varRegisters[varIndex];
+            }
+        }
+        return -1;
+    }
+
+    private boolean varIsDirectCallParameter(int varIndex)
+    {
+        return fnCurrent.isParameter(varIndex)
+            && inDirectCallFunction && !itsForcedObjectParameters;
+    }
+
+    private void genSimpleCompare(int type, int trueGOTO, int falseGOTO)
+    {
+        if (trueGOTO == -1) throw Codegen.badTree();
+        switch (type) {
+            case Token.LE :
+                cfw.add(ByteCode.DCMPG);
+                cfw.add(ByteCode.IFLE, trueGOTO);
+                break;
+            case Token.GE :
+                cfw.add(ByteCode.DCMPL);
+                cfw.add(ByteCode.IFGE, trueGOTO);
+                break;
+            case Token.LT :
+                cfw.add(ByteCode.DCMPG);
+                cfw.add(ByteCode.IFLT, trueGOTO);
+                break;
+            case Token.GT :
+                cfw.add(ByteCode.DCMPL);
+                cfw.add(ByteCode.IFGT, trueGOTO);
+                break;
+            default :
+                throw Codegen.badTree();
+
+        }
+        if (falseGOTO != -1)
+            cfw.add(ByteCode.GOTO, falseGOTO);
+    }
+
+    private void visitIfJumpRelOp(Node node, Node child,
+                                  int trueGOTO, int falseGOTO)
+    {
+        if (trueGOTO == -1 || falseGOTO == -1) throw Codegen.badTree();
+        int type = node.getType();
+        Node rChild = child.getNext();
+        if (type == Token.INSTANCEOF || type == Token.IN) {
+            generateExpression(child, node);
+            generateExpression(rChild, node);
+            cfw.addALoad(contextLocal);
+            addScriptRuntimeInvoke(
+                (type == Token.INSTANCEOF) ? "instanceOf" : "in",
+                "(Ljava/lang/Object;"
+                +"Ljava/lang/Object;"
+                +"Lorg/mozilla/javascript/Context;"
+                +")Z");
+            cfw.add(ByteCode.IFNE, trueGOTO);
+            cfw.add(ByteCode.GOTO, falseGOTO);
+            return;
+        }
+        int childNumberFlag = node.getIntProp(Node.ISNUMBER_PROP, -1);
+        int left_dcp_register = nodeIsDirectCallParameter(child);
+        int right_dcp_register = nodeIsDirectCallParameter(rChild);
+        if (childNumberFlag != -1) {
+            // Force numeric context on both parameters and optimize
+            // direct call case as Optimizer currently does not handle it
+
+            if (childNumberFlag != Node.RIGHT) {
+                // Left already has number content
+                generateExpression(child, node);
+            } else if (left_dcp_register != -1) {
+                dcpLoadAsNumber(left_dcp_register);
+            } else {
+                generateExpression(child, node);
+                addObjectToDouble();
+            }
+
+            if (childNumberFlag != Node.LEFT) {
+                // Right already has number content
+                generateExpression(rChild, node);
+            } else if (right_dcp_register != -1) {
+                dcpLoadAsNumber(right_dcp_register);
+            } else {
+                generateExpression(rChild, node);
+                addObjectToDouble();
+            }
+
+            genSimpleCompare(type, trueGOTO, falseGOTO);
+
+        } else {
+            if (left_dcp_register != -1 && right_dcp_register != -1) {
+                // Generate code to dynamically check for number content
+                // if both operands are dcp
+                short stack = cfw.getStackTop();
+                int leftIsNotNumber = cfw.acquireLabel();
+                cfw.addALoad(left_dcp_register);
+                cfw.add(ByteCode.GETSTATIC,
+                        "java/lang/Void",
+                        "TYPE",
+                        "Ljava/lang/Class;");
+                cfw.add(ByteCode.IF_ACMPNE, leftIsNotNumber);
+                cfw.addDLoad(left_dcp_register + 1);
+                dcpLoadAsNumber(right_dcp_register);
+                genSimpleCompare(type, trueGOTO, falseGOTO);
+                if (stack != cfw.getStackTop()) throw Codegen.badTree();
+
+                cfw.markLabel(leftIsNotNumber);
+                int rightIsNotNumber = cfw.acquireLabel();
+                cfw.addALoad(right_dcp_register);
+                cfw.add(ByteCode.GETSTATIC,
+                        "java/lang/Void",
+                        "TYPE",
+                        "Ljava/lang/Class;");
+                cfw.add(ByteCode.IF_ACMPNE, rightIsNotNumber);
+                cfw.addALoad(left_dcp_register);
+                addObjectToDouble();
+                cfw.addDLoad(right_dcp_register + 1);
+                genSimpleCompare(type, trueGOTO, falseGOTO);
+                if (stack != cfw.getStackTop()) throw Codegen.badTree();
+
+                cfw.markLabel(rightIsNotNumber);
+                // Load both register as objects to call generic cmp_*
+                cfw.addALoad(left_dcp_register);
+                cfw.addALoad(right_dcp_register);
+
+            } else {
+                generateExpression(child, node);
+                generateExpression(rChild, node);
+            }
+
+            if (type == Token.GE || type == Token.GT) {
+                cfw.add(ByteCode.SWAP);
+            }
+            String routine = ((type == Token.LT)
+                      || (type == Token.GT)) ? "cmp_LT" : "cmp_LE";
+            addScriptRuntimeInvoke(routine,
+                                   "(Ljava/lang/Object;"
+                                   +"Ljava/lang/Object;"
+                                   +")Z");
+            cfw.add(ByteCode.IFNE, trueGOTO);
+            cfw.add(ByteCode.GOTO, falseGOTO);
+        }
+    }
+
+    private void visitIfJumpEqOp(Node node, Node child,
+                                 int trueGOTO, int falseGOTO)
+    {
+        if (trueGOTO == -1 || falseGOTO == -1) throw Codegen.badTree();
+
+        short stackInitial = cfw.getStackTop();
+        int type = node.getType();
+        Node rChild = child.getNext();
+
+        // Optimize if one of operands is null
+        if (child.getType() == Token.NULL || rChild.getType() == Token.NULL) {
+            // eq is symmetric in this case
+            if (child.getType() == Token.NULL) {
+                child = rChild;
+            }
+            generateExpression(child, node);
+            if (type == Token.SHEQ || type == Token.SHNE) {
+                int testCode = (type == Token.SHEQ)
+                                ? ByteCode.IFNULL : ByteCode.IFNONNULL;
+                cfw.add(testCode, trueGOTO);
+            } else {
+                if (type != Token.EQ) {
+                    // swap false/true targets for !=
+                    if (type != Token.NE) throw Codegen.badTree();
+                    int tmp = trueGOTO;
+                    trueGOTO = falseGOTO;
+                    falseGOTO = tmp;
+                }
+                cfw.add(ByteCode.DUP);
+                int undefCheckLabel = cfw.acquireLabel();
+                cfw.add(ByteCode.IFNONNULL, undefCheckLabel);
+                short stack = cfw.getStackTop();
+                cfw.add(ByteCode.POP);
+                cfw.add(ByteCode.GOTO, trueGOTO);
+                cfw.markLabel(undefCheckLabel, stack);
+                Codegen.pushUndefined(cfw);
+                cfw.add(ByteCode.IF_ACMPEQ, trueGOTO);
+            }
+            cfw.add(ByteCode.GOTO, falseGOTO);
+        } else {
+            int child_dcp_register = nodeIsDirectCallParameter(child);
+            if (child_dcp_register != -1
+                && rChild.getType() == Token.TO_OBJECT)
+            {
+                Node convertChild = rChild.getFirstChild();
+                if (convertChild.getType() == Token.NUMBER) {
+                    cfw.addALoad(child_dcp_register);
+                    cfw.add(ByteCode.GETSTATIC,
+                            "java/lang/Void",
+                            "TYPE",
+                            "Ljava/lang/Class;");
+                    int notNumbersLabel = cfw.acquireLabel();
+                    cfw.add(ByteCode.IF_ACMPNE, notNumbersLabel);
+                    cfw.addDLoad(child_dcp_register + 1);
+                    cfw.addPush(convertChild.getDouble());
+                    cfw.add(ByteCode.DCMPL);
+                    if (type == Token.EQ)
+                        cfw.add(ByteCode.IFEQ, trueGOTO);
+                    else
+                        cfw.add(ByteCode.IFNE, trueGOTO);
+                    cfw.add(ByteCode.GOTO, falseGOTO);
+                    cfw.markLabel(notNumbersLabel);
+                    // fall thru into generic handling
+                }
+            }
+
+            generateExpression(child, node);
+            generateExpression(rChild, node);
+
+            String name;
+            int testCode;
+            switch (type) {
+              case Token.EQ:
+                name = "eq";
+                testCode = ByteCode.IFNE;
+                break;
+              case Token.NE:
+                name = "eq";
+                testCode = ByteCode.IFEQ;
+                break;
+              case Token.SHEQ:
+                name = "shallowEq";
+                testCode = ByteCode.IFNE;
+                break;
+              case Token.SHNE:
+                name = "shallowEq";
+                testCode = ByteCode.IFEQ;
+                break;
+              default:
+                throw Codegen.badTree();
+            }
+            addScriptRuntimeInvoke(name,
+                                   "(Ljava/lang/Object;"
+                                   +"Ljava/lang/Object;"
+                                   +")Z");
+            cfw.add(testCode, trueGOTO);
+            cfw.add(ByteCode.GOTO, falseGOTO);
+        }
+        if (stackInitial != cfw.getStackTop()) throw Codegen.badTree();
+    }
+
+    private void visitSetName(Node node, Node child)
+    {
+        String name = node.getFirstChild().getString();
+        while (child != null) {
+            generateExpression(child, node);
+            child = child.getNext();
+        }
+        cfw.addALoad(contextLocal);
+        cfw.addALoad(variableObjectLocal);
+        cfw.addPush(name);
+        addScriptRuntimeInvoke(
+            "setName",
+            "(Lorg/mozilla/javascript/Scriptable;"
+            +"Ljava/lang/Object;"
+            +"Lorg/mozilla/javascript/Context;"
+            +"Lorg/mozilla/javascript/Scriptable;"
+            +"Ljava/lang/String;"
+            +")Ljava/lang/Object;");
+    }
+
+    private void visitSetConst(Node node, Node child)
+    {
+        String name = node.getFirstChild().getString();
+        while (child != null) {
+            generateExpression(child, node);
+            child = child.getNext();
+        }
+        cfw.addALoad(contextLocal);
+        cfw.addPush(name);
+        addScriptRuntimeInvoke(
+            "setConst",
+            "(Lorg/mozilla/javascript/Scriptable;"
+            +"Ljava/lang/Object;"
+            +"Lorg/mozilla/javascript/Context;"
+            +"Ljava/lang/String;"
+            +")Ljava/lang/Object;");
+    }
+
+    private void visitGetVar(Node node)
+    {
+        if (!hasVarsInRegs) Kit.codeBug();
+        int varIndex = fnCurrent.getVarIndex(node);
+        short reg = varRegisters[varIndex];
+        if (varIsDirectCallParameter(varIndex)) {
+            // Remember that here the isNumber flag means that we
+            // want to use the incoming parameter in a Number
+            // context, so test the object type and convert the
+            //  value as necessary.
+            if (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1) {
+                dcpLoadAsNumber(reg);
+            } else {
+                dcpLoadAsObject(reg);
+            }
+        } else if (fnCurrent.isNumberVar(varIndex)) {
+            cfw.addDLoad(reg);
+        } else {
+            cfw.addALoad(reg);
+        }
+    }
+
+    private void visitSetVar(Node node, Node child, boolean needValue)
+    {
+        if (!hasVarsInRegs) Kit.codeBug();
+        int varIndex = fnCurrent.getVarIndex(node);
+        generateExpression(child.getNext(), node);
+        boolean isNumber = (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1);
+        short reg = varRegisters[varIndex];
+        boolean [] constDeclarations = fnCurrent.fnode.getParamAndVarConst();
+        if (constDeclarations[varIndex]) {
+            if (!needValue) {
+                if (isNumber)
+                    cfw.add(ByteCode.POP2);
+                else
+                    cfw.add(ByteCode.POP);
+            }
+        }
+        else if (varIsDirectCallParameter(varIndex)) {
+            if (isNumber) {
+                if (needValue) cfw.add(ByteCode.DUP2);
+                cfw.addALoad(reg);
+                cfw.add(ByteCode.GETSTATIC,
+                        "java/lang/Void",
+                        "TYPE",
+                        "Ljava/lang/Class;");
+                int isNumberLabel = cfw.acquireLabel();
+                int beyond = cfw.acquireLabel();
+                cfw.add(ByteCode.IF_ACMPEQ, isNumberLabel);
+                short stack = cfw.getStackTop();
+                addDoubleWrap();
+                cfw.addAStore(reg);
+                cfw.add(ByteCode.GOTO, beyond);
+                cfw.markLabel(isNumberLabel, stack);
+                cfw.addDStore(reg + 1);
+                cfw.markLabel(beyond);
+            }
+            else {
+                if (needValue) cfw.add(ByteCode.DUP);
+                cfw.addAStore(reg);
+            }
+        } else {
+            boolean isNumberVar = fnCurrent.isNumberVar(varIndex);
+            if (isNumber) {
+                if (isNumberVar) {
+                    cfw.addDStore(reg);
+                    if (needValue) cfw.addDLoad(reg);
+                } else {
+                    if (needValue) cfw.add(ByteCode.DUP2);
+                    // Cannot save number in variable since !isNumberVar,
+                    // so convert to object
+                    addDoubleWrap();
+                    cfw.addAStore(reg);
+                }
+            } else {
+                if (isNumberVar) Kit.codeBug();
+                cfw.addAStore(reg);
+                if (needValue) cfw.addALoad(reg);
+            }
+        }
+    }
+
+    private void visitSetConstVar(Node node, Node child, boolean needValue)
+    {
+        if (!hasVarsInRegs) Kit.codeBug();
+        int varIndex = fnCurrent.getVarIndex(node);
+        generateExpression(child.getNext(), node);
+        boolean isNumber = (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1);
+        short reg = varRegisters[varIndex];
+        int beyond = cfw.acquireLabel();
+        int noAssign = cfw.acquireLabel();
+        if (isNumber) {
+            cfw.addILoad(reg + 2);
+            cfw.add(ByteCode.IFNE, noAssign);
+            short stack = cfw.getStackTop();
+            cfw.addPush(1);
+            cfw.addIStore(reg + 2);
+            cfw.addDStore(reg);
+            if (needValue) {
+                cfw.addDLoad(reg);
+                cfw.markLabel(noAssign, stack);
+            } else {
+                cfw.add(ByteCode.GOTO, beyond);
+                cfw.markLabel(noAssign, stack);
+                cfw.add(ByteCode.POP2);
+            }
+        }
+        else {
+            cfw.addILoad(reg + 1);
+            cfw.add(ByteCode.IFNE, noAssign);
+            short stack = cfw.getStackTop();
+            cfw.addPush(1);
+            cfw.addIStore(reg + 1);
+            cfw.addAStore(reg);
+            if (needValue) {
+                cfw.addALoad(reg);
+                cfw.markLabel(noAssign, stack);
+            } else {
+                cfw.add(ByteCode.GOTO, beyond);
+                cfw.markLabel(noAssign, stack);
+                cfw.add(ByteCode.POP);
+            }
+        }
+        cfw.markLabel(beyond);
+    }
+
+    private void visitGetProp(Node node, Node child)
+    {
+        generateExpression(child, node); // object
+        Node nameChild = child.getNext();
+        generateExpression(nameChild, node);  // the name
+        if (node.getType() == Token.GETPROPNOWARN) {
+            cfw.addALoad(contextLocal);
+            addScriptRuntimeInvoke(
+                "getObjectPropNoWarn",
+                "(Ljava/lang/Object;"
+                +"Ljava/lang/String;"
+                +"Lorg/mozilla/javascript/Context;"
+                +")Ljava/lang/Object;");
+            return;
+        }
+        /*
+            for 'this.foo' we call getObjectProp(Scriptable...) which can
+            skip some casting overhead.
+        */
+        int childType = child.getType();
+        if (childType == Token.THIS && nameChild.getType() == Token.STRING) {
+            cfw.addALoad(contextLocal);
+            addScriptRuntimeInvoke(
+                "getObjectProp",
+                "(Lorg/mozilla/javascript/Scriptable;"
+                +"Ljava/lang/String;"
+                +"Lorg/mozilla/javascript/Context;"
+                +")Ljava/lang/Object;");
+        } else {
+            cfw.addALoad(contextLocal);
+            addScriptRuntimeInvoke(
+                "getObjectProp",
+                "(Ljava/lang/Object;"
+                +"Ljava/lang/String;"
+                +"Lorg/mozilla/javascript/Context;"
+                +")Ljava/lang/Object;");
+        }
+    }
+
+    private void visitSetProp(int type, Node node, Node child)
+    {
+        Node objectChild = child;
+        generateExpression(child, node);
+        child = child.getNext();
+        if (type == Token.SETPROP_OP) {
+            cfw.add(ByteCode.DUP);
+        }
+        Node nameChild = child;
+        generateExpression(child, node);
+        child = child.getNext();
+        if (type == Token.SETPROP_OP) {
+            // stack: ... object object name -> ... object name object name
+            cfw.add(ByteCode.DUP_X1);
+            //for 'this.foo += ...' we call thisGet which can skip some
+            //casting overhead.
+            if (objectChild.getType() == Token.THIS
+                && nameChild.getType() == Token.STRING)
+            {
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke(
+                    "getObjectProp",
+                    "(Lorg/mozilla/javascript/Scriptable;"
+                    +"Ljava/lang/String;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Ljava/lang/Object;");
+            } else {
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke(
+                    "getObjectProp",
+                    "(Ljava/lang/Object;"
+                    +"Ljava/lang/String;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Ljava/lang/Object;");
+            }
+        }
+        generateExpression(child, node);
+        cfw.addALoad(contextLocal);
+        addScriptRuntimeInvoke(
+            "setObjectProp",
+            "(Ljava/lang/Object;"
+            +"Ljava/lang/String;"
+            +"Ljava/lang/Object;"
+            +"Lorg/mozilla/javascript/Context;"
+            +")Ljava/lang/Object;");
+    }
+
+    private void visitSetElem(int type, Node node, Node child)
+    {
+        generateExpression(child, node);
+        child = child.getNext();
+        if (type == Token.SETELEM_OP) {
+            cfw.add(ByteCode.DUP);
+        }
+        generateExpression(child, node);
+        child = child.getNext();
+        boolean indexIsNumber = (node.getIntProp(Node.ISNUMBER_PROP, -1) != -1);
+        if (type == Token.SETELEM_OP) {
+            if (indexIsNumber) {
+                // stack: ... object object number
+                //        -> ... object number object number
+                cfw.add(ByteCode.DUP2_X1);
+                cfw.addALoad(contextLocal);
+                addOptRuntimeInvoke(
+                    "getObjectIndex",
+                    "(Ljava/lang/Object;D"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Ljava/lang/Object;");
+            } else {
+                // stack: ... object object indexObject
+                //        -> ... object indexObject object indexObject
+                cfw.add(ByteCode.DUP_X1);
+                cfw.addALoad(contextLocal);
+                addScriptRuntimeInvoke(
+                    "getObjectElem",
+                    "(Ljava/lang/Object;"
+                    +"Ljava/lang/Object;"
+                    +"Lorg/mozilla/javascript/Context;"
+                    +")Ljava/lang/Object;");
+            }
+        }
+        generateExpression(child, node);
+        cfw.addALoad(contextLocal);
+        if (indexIsNumber) {
+            addScriptRuntimeInvoke(
+                "setObjectIndex",
+                "(Ljava/lang/Object;"
+                +"D"
+                +"Ljava/lang/Object;"
+                +"Lorg/mozilla/javascript/Context;"
+                +")Ljava/lang/Object;");
+        } else {
+            addScriptRuntimeInvoke(
+                "setObjectElem",
+                "(Ljava/lang/Object;"
+                +"Ljava/lang/Object;"
+                +"Ljava/lang/Object;"
+                +"Lorg/mozilla/javascript/Context;"
+                +")Ljava/lang/Object;");
+        }
+    }
+
+    private void visitDotQuery(Node node, Node child)
+    {
+        updateLineNumber(node);
+        generateExpression(child, node);
+        cfw.addALoad(variableObjectLocal);
+        addScriptRuntimeInvoke("enterDotQuery",
+                               "(Ljava/lang/Object;"
+                               +"Lorg/mozilla/javascript/Scriptable;"
+                               +")Lorg/mozilla/javascript/Scriptable;");
+        cfw.addAStore(variableObjectLocal);
+
+        // add push null/pop with label in between to simplify code for loop
+        // continue when it is necessary to pop the null result from
+        // updateDotQuery
+        cfw.add(ByteCode.ACONST_NULL);
+        int queryLoopStart = cfw.acquireLabel();
+        cfw.markLabel(queryLoopStart); // loop continue jumps here
+        cfw.add(ByteCode.POP);
+
+        generateExpression(child.getNext(), node);
+        addScriptRuntimeInvoke("toBoolean", "(Ljava/lang/Object;)Z");
+        cfw.addALoad(variableObjectLocal);
+        addScriptRuntimeInvoke("updateDotQuery",
+                               "(Z"
+                               +"Lorg/mozilla/javascript/Scriptable;"
+                               +")Ljava/lang/Object;");
+        cfw.add(ByteCode.DUP);
+        cfw.add(ByteCode.IFNULL, queryLoopStart);
+        // stack: ... non_null_result_of_updateDotQuery
+        cfw.addALoad(variableObjectLocal);
+        addScriptRuntimeInvoke("leaveDotQuery",
+                               "(Lorg/mozilla/javascript/Scriptable;"
+                               +")Lorg/mozilla/javascript/Scriptable;");
+        cfw.addAStore(variableObjectLocal);
+    }
+
+    private int getLocalBlockRegister(Node node)
+    {
+        Node localBlock = (Node)node.getProp(Node.LOCAL_BLOCK_PROP);
+        int localSlot = localBlock.getExistingIntProp(Node.LOCAL_PROP);
+        return localSlot;
+    }
+
+    private void dcpLoadAsNumber(int dcp_register)
+    {
+        cfw.addALoad(dcp_register);
+        cfw.add(ByteCode.GETSTATIC,
+                "java/lang/Void",
+                "TYPE",
+                "Ljava/lang/Class;");
+        int isNumberLabel = cfw.acquireLabel();
+        cfw.add(ByteCode.IF_ACMPEQ, isNumberLabel);
+        short stack = cfw.getStackTop();
+        cfw.addALoad(dcp_register);
+        addObjectToDouble();
+        int beyond = cfw.acquireLabel();
+        cfw.add(ByteCode.GOTO, beyond);
+        cfw.markLabel(isNumberLabel, stack);
+        cfw.addDLoad(dcp_register + 1);
+        cfw.markLabel(beyond);
+    }
+
+    private void dcpLoadAsObject(int dcp_register)
+    {
+        cfw.addALoad(dcp_register);
+        cfw.add(ByteCode.GETSTATIC,
+                "java/lang/Void",
+                "TYPE",
+                "Ljava/lang/Class;");
+        int isNumberLabel = cfw.acquireLabel();
+        cfw.add(ByteCode.IF_ACMPEQ, isNumberLabel);
+        short stack = cfw.getStackTop();
+        cfw.addALoad(dcp_register);
+        int beyond = cfw.acquireLabel();
+        cfw.add(ByteCode.GOTO, beyond);
+        cfw.markLabel(isNumberLabel, stack);
+        cfw.addDLoad(dcp_register + 1);
+        addDoubleWrap();
+        cfw.markLabel(beyond);
+    }
+
+    private void addGoto(Node target, int jumpcode)
+    {
+        int targetLabel = getTargetLabel(target);
+        cfw.add(jumpcode, targetLabel);
+    }
+
+    private void addObjectToDouble()
+    {
+        addScriptRuntimeInvoke("toNumber", "(Ljava/lang/Object;)D");
+    }
+
+    private void addNewObjectArray(int size)
+    {
+        if (size == 0) {
+            if (itsZeroArgArray >= 0) {
+                cfw.addALoad(itsZeroArgArray);
+            } else {
+                cfw.add(ByteCode.GETSTATIC,
+                        "org/mozilla/javascript/ScriptRuntime",
+                        "emptyArgs", "[Ljava/lang/Object;");
+            }
+        } else {
+            cfw.addPush(size);
+            cfw.add(ByteCode.ANEWARRAY, "java/lang/Object");
+        }
+    }
+
+    private void addScriptRuntimeInvoke(String methodName,
+                                        String methodSignature)
+    {
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org.mozilla.javascript.ScriptRuntime",
+                      methodName,
+                      methodSignature);
+    }
+
+    private void addOptRuntimeInvoke(String methodName,
+                                     String methodSignature)
+    {
+        cfw.addInvoke(ByteCode.INVOKESTATIC,
+                      "org/mozilla/javascript/optimizer/OptRuntime",
+                      methodName,
+                      methodSignature);
+    }
+
+    private void addJumpedBooleanWrap(int trueLabel, int falseLabel)
+    {
+        cfw.markLabel(falseLabel);
+        int skip = cfw.acquireLabel();
+        cfw.add(ByteCode.GETSTATIC, "java/lang/Boolean",
+                                "FALSE", "Ljava/lang/Boolean;");
+        cfw.add(ByteCode.GOTO, skip);
+        cfw.markLabel(trueLabel);
+        cfw.add(ByteCode.GETSTATIC, "java/lang/Boolean",
+                                "TRUE", "Ljava/lang/Boolean;");
+        cfw.markLabel(skip);
+        cfw.adjustStackTop(-1);   // only have 1 of true/false
+    }
+
+    private void addDoubleWrap()
+    {
+        addOptRuntimeInvoke("wrapDouble", "(D)Ljava/lang/Double;");
+    }
+
+    /**
+     * Const locals use an extra slot to hold the has-been-assigned-once flag at
+     * runtime.
+     * @param isConst true iff the variable is const
+     * @return the register for the word pair (double/long)
+     */
+    private short getNewWordPairLocal(boolean isConst)
+    {
+        short result = getConsecutiveSlots(2, isConst);
+        if (result < (MAX_LOCALS - 1)) {
+            locals[result] = 1;
+            locals[result + 1] = 1;
+            if (isConst)
+                locals[result + 2] = 1;
+            if (result == firstFreeLocal) {
+                for (int i = firstFreeLocal + 2; i < MAX_LOCALS; i++) {
+                    if (locals[i] == 0) {
+                        firstFreeLocal = (short) i;
+                        if (localsMax < firstFreeLocal)
+                            localsMax = firstFreeLocal;
+                        return result;
+                    }
+                }
+            }
+            else {
+                return result;
+            }
+        }
+        throw Context.reportRuntimeError("Program too complex " +
+                                         "(out of locals)");
+    }
+
+    private short getNewWordLocal(boolean isConst)
+    {
+        short result = getConsecutiveSlots(1, isConst);
+        if (result < (MAX_LOCALS - 1)) {
+            locals[result] = 1;
+            if (isConst)
+                locals[result + 1] = 1;
+            if (result == firstFreeLocal) {
+                for (int i = firstFreeLocal + 2; i < MAX_LOCALS; i++) {
+                    if (locals[i] == 0) {
+                        firstFreeLocal = (short) i;
+                        if (localsMax < firstFreeLocal)
+                            localsMax = firstFreeLocal;
+                        return result;
+                    }
+                }
+            }
+            else {
+                return result;
+            }
+        }
+        throw Context.reportRuntimeError("Program too complex " +
+                                         "(out of locals)");
+    }
+
+    private short getNewWordLocal()
+    {
+        short result = firstFreeLocal;
+        locals[result] = 1;
+        for (int i = firstFreeLocal + 1; i < MAX_LOCALS; i++) {
+            if (locals[i] == 0) {
+                firstFreeLocal = (short) i;
+                if (localsMax < firstFreeLocal)
+                    localsMax = firstFreeLocal;
+                return result;
+            }
+        }
+        throw Context.reportRuntimeError("Program too complex " +
+                                         "(out of locals)");
+    }
+
+    private short getConsecutiveSlots(int count, boolean isConst) {
+        if (isConst)
+            count++;
+        short result = firstFreeLocal;
+        while (true) {
+            if (result >= (MAX_LOCALS - 1))
+                break;
+            int i;
+            for (i = 0; i < count; i++)
+                if (locals[result + i] != 0)
+                    break;
+            if (i >= count)
+                break;
+            result++;
+        }
+        return result;
+    }
+
+    // This is a valid call only for a local that is allocated by default.
+    private void incReferenceWordLocal(short local)
+    {
+        locals[local]++;
+    }
+
+    // This is a valid call only for a local that is allocated by default.
+    private void decReferenceWordLocal(short local)
+    {
+        locals[local]--;
+    }
+
+    private void releaseWordLocal(short local)
+    {
+        if (local < firstFreeLocal)
+            firstFreeLocal = local;
+        locals[local] = 0;
+    }
+
+
+    static final int GENERATOR_TERMINATE = -1;
+    static final int GENERATOR_START = 0;
+    static final int GENERATOR_YIELD_START = 1;
+
+    ClassFileWriter cfw;
+    Codegen codegen;
+    CompilerEnvirons compilerEnv;
+    ScriptOrFnNode scriptOrFn;
+    public int scriptOrFnIndex;
+    private int savedCodeOffset;
+
+    private OptFunctionNode fnCurrent;
+    private boolean isTopLevel;
+
+    private static final int MAX_LOCALS = 256;
+    private int[] locals;
+    private short firstFreeLocal;
+    private short localsMax;
+
+    private int itsLineNumber;
+
+    private boolean hasVarsInRegs;
+    private short[] varRegisters;
+    private boolean inDirectCallFunction;
+    private boolean itsForcedObjectParameters;
+    private int enterAreaStartLabel;
+    private int epilogueLabel;
+
+    // special known locals. If you add a new local here, be sure
+    // to initialize it to -1 in initBodyGeneration
+    private short variableObjectLocal;
+    private short popvLocal;
+    private short contextLocal;
+    private short argsLocal;
+    private short operationLocal;
+    private short thisObjLocal;
+    private short funObjLocal;
+    private short itsZeroArgArray;
+    private short itsOneArgArray;
+    private short scriptRegexpLocal;
+    private short generatorStateLocal;
+
+    private boolean isGenerator;
+    private int generatorSwitch;
+    private int maxLocals = 0;
+    private int maxStack = 0;
+
+    private Hashtable finallys;
+
+    class FinallyReturnPoint {
+        public ArrayList jsrPoints  = new ArrayList();
+        public int tableLabel = 0;        
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/DataFlowBitSet.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/DataFlowBitSet.java
new file mode 100644
index 0000000..607e649
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/DataFlowBitSet.java
@@ -0,0 +1,134 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+
+package org.mozilla.javascript.optimizer;
+
+class DataFlowBitSet {
+
+    private int itsBits[];
+    private int itsSize;
+
+    DataFlowBitSet(int size)
+    {
+        itsSize = size;
+        itsBits = new int[(size + 31) >> 5];
+    }
+
+    void set(int n)
+    {
+        if (!(0 <= n && n < itsSize)) badIndex(n);
+        itsBits[n >> 5] |= 1 << (n & 31);
+    }
+
+    boolean test(int n)
+    {
+        if (!(0 <= n && n < itsSize)) badIndex(n);
+        return ((itsBits[n >> 5] & (1 << (n & 31))) != 0);
+    }
+
+    void not()
+    {
+        int bitsLength = itsBits.length;
+        for (int i = 0; i < bitsLength; i++)
+            itsBits[i] = ~itsBits[i];
+    }
+
+    void clear(int n)
+    {
+        if (!(0 <= n && n < itsSize)) badIndex(n);
+        itsBits[n >> 5] &= ~(1 << (n & 31));
+    }
+
+    void clear()
+    {
+        int bitsLength = itsBits.length;
+        for (int i = 0; i < bitsLength; i++)
+            itsBits[i] = 0;
+    }
+
+    void or(DataFlowBitSet b)
+    {
+        int bitsLength = itsBits.length;
+        for (int i = 0; i < bitsLength; i++)
+            itsBits[i] |= b.itsBits[i];
+    }
+
+    public String toString()
+    {
+        StringBuffer sb = new StringBuffer();
+        sb.append("DataFlowBitSet, size = ");
+        sb.append(itsSize);
+        sb.append('\n');
+        int bitsLength = itsBits.length;
+        for (int i = 0; i < bitsLength; i++) {
+            sb.append(Integer.toHexString(itsBits[i]));
+            sb.append(' ');
+        }
+        return sb.toString();
+    }
+
+    boolean df(DataFlowBitSet in, DataFlowBitSet gen, DataFlowBitSet notKill)
+    {
+        int bitsLength = itsBits.length;
+        boolean changed = false;
+        for (int i = 0; i < bitsLength; i++) {
+            int oldBits = itsBits[i];
+            itsBits[i] = (in.itsBits[i] | gen.itsBits[i]) & notKill.itsBits[i];
+            changed |= (oldBits != itsBits[i]);
+        }
+        return changed;
+    }
+
+    boolean df2(DataFlowBitSet in, DataFlowBitSet gen, DataFlowBitSet notKill)
+    {
+        int bitsLength = itsBits.length;
+        boolean changed = false;
+        for (int i = 0; i < bitsLength; i++) {
+            int oldBits = itsBits[i];
+            itsBits[i] = (in.itsBits[i] & notKill.itsBits[i]) | gen.itsBits[i];
+            changed |= (oldBits != itsBits[i]);
+        }
+        return changed;
+    }
+
+    private void badIndex(int n)
+    {
+        throw new RuntimeException("DataFlowBitSet bad index " + n);
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptFunctionNode.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptFunctionNode.java
new file mode 100644
index 0000000..e043165
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptFunctionNode.java
@@ -0,0 +1,149 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Bob Jervis
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+package org.mozilla.javascript.optimizer;
+
+import org.mozilla.javascript.*;
+
+final class OptFunctionNode
+{
+    OptFunctionNode(FunctionNode fnode)
+    {
+        this.fnode = fnode;
+        fnode.setCompilerData(this);
+    }
+
+    static OptFunctionNode get(ScriptOrFnNode scriptOrFn, int i)
+    {
+        FunctionNode fnode = scriptOrFn.getFunctionNode(i);
+        return (OptFunctionNode)fnode.getCompilerData();
+    }
+
+    static OptFunctionNode get(ScriptOrFnNode scriptOrFn)
+    {
+        return (OptFunctionNode)scriptOrFn.getCompilerData();
+    }
+
+    boolean isTargetOfDirectCall()
+    {
+        return directTargetIndex >= 0;
+    }
+
+    int getDirectTargetIndex()
+    {
+        return directTargetIndex;
+    }
+
+    void setDirectTargetIndex(int directTargetIndex)
+    {
+        // One time action
+        if (directTargetIndex < 0 || this.directTargetIndex >= 0)
+            Kit.codeBug();
+        this.directTargetIndex = directTargetIndex;
+    }
+
+    void setParameterNumberContext(boolean b)
+    {
+        itsParameterNumberContext = b;
+    }
+
+    boolean getParameterNumberContext()
+    {
+        return itsParameterNumberContext;
+    }
+
+    int getVarCount()
+    {
+        return fnode.getParamAndVarCount();
+    }
+
+    boolean isParameter(int varIndex)
+    {
+        return varIndex < fnode.getParamCount();
+    }
+
+    boolean isNumberVar(int varIndex)
+    {
+        varIndex -= fnode.getParamCount();
+        if (varIndex >= 0 && numberVarFlags != null) {
+            return numberVarFlags[varIndex];
+        }
+        return false;
+    }
+
+    void setIsNumberVar(int varIndex)
+    {
+        varIndex -= fnode.getParamCount();
+        // Can only be used with non-parameters
+        if (varIndex < 0) Kit.codeBug();
+        if (numberVarFlags == null) {
+            int size = fnode.getParamAndVarCount() - fnode.getParamCount();
+            numberVarFlags = new boolean[size];
+        }
+        numberVarFlags[varIndex] = true;
+    }
+
+    int getVarIndex(Node n)
+    {
+        int index = n.getIntProp(Node.VARIABLE_PROP, -1);
+        if (index == -1) {
+            Node node;
+            int type = n.getType();
+            if (type == Token.GETVAR) {
+                node = n;
+            } else if (type == Token.SETVAR ||
+                       type == Token.SETCONSTVAR) {
+                node = n.getFirstChild();
+            } else {
+                throw Kit.codeBug();
+            }
+            index = fnode.getIndexForNameNode(node);
+            if (index < 0) throw Kit.codeBug();
+            n.putIntProp(Node.VARIABLE_PROP, index);
+        }
+        return index;
+    }
+
+    FunctionNode fnode;
+    private boolean[] numberVarFlags;
+    private int directTargetIndex = -1;
+    private boolean itsParameterNumberContext;
+    boolean itsContainsCalls0;
+    boolean itsContainsCalls1;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptRuntime.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptRuntime.java
new file mode 100644
index 0000000..ba8ca03
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptRuntime.java
@@ -0,0 +1,311 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roger Lawrence
+ *   Hannes Wallnoefer
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+package org.mozilla.javascript.optimizer;
+
+import org.mozilla.javascript.*;
+
+public final class OptRuntime extends ScriptRuntime
+{
+
+    public static final Double zeroObj = new Double(0.0);
+    public static final Double oneObj = new Double(1.0);
+    public static final Double minusOneObj = new Double(-1.0);
+
+    /**
+     * Implement ....() call shrinking optimizer code.
+     */
+    public static Object call0(Callable fun, Scriptable thisObj,
+                               Context cx, Scriptable scope)
+    {
+        return fun.call(cx, scope, thisObj, ScriptRuntime.emptyArgs);
+    }
+
+    /**
+     * Implement ....(arg) call shrinking optimizer code.
+     */
+    public static Object call1(Callable fun, Scriptable thisObj, Object arg0,
+                               Context cx, Scriptable scope)
+    {
+        return fun.call(cx, scope, thisObj, new Object[] { arg0 } );
+    }
+
+    /**
+     * Implement ....(arg0, arg1) call shrinking optimizer code.
+     */
+    public static Object call2(Callable fun, Scriptable thisObj,
+                               Object arg0, Object arg1,
+                               Context cx, Scriptable scope)
+    {
+        return fun.call(cx, scope, thisObj, new Object[] { arg0, arg1 });
+    }
+
+    /**
+     * Implement ....(arg0, arg1, ...) call shrinking optimizer code.
+     */
+    public static Object callN(Callable fun, Scriptable thisObj,
+                               Object[] args,
+                               Context cx, Scriptable scope)
+    {
+        return fun.call(cx, scope, thisObj, args);
+    }
+
+    /**
+     * Implement name(args) call shrinking optimizer code.
+     */
+    public static Object callName(Object[] args, String name,
+                                  Context cx, Scriptable scope)
+    {
+        Callable f = getNameFunctionAndThis(name, cx, scope);
+        Scriptable thisObj = lastStoredScriptable(cx);
+        return f.call(cx, scope, thisObj, args);
+    }
+
+    /**
+     * Implement name() call shrinking optimizer code.
+     */
+    public static Object callName0(String name,
+                                   Context cx, Scriptable scope)
+    {
+        Callable f = getNameFunctionAndThis(name, cx, scope);
+        Scriptable thisObj = lastStoredScriptable(cx);
+        return f.call(cx, scope, thisObj, ScriptRuntime.emptyArgs);
+    }
+
+    /**
+     * Implement x.property() call shrinking optimizer code.
+     */
+    public static Object callProp0(Object value, String property,
+                                   Context cx, Scriptable scope)
+    {
+        Callable f = getPropFunctionAndThis(value, property, cx);
+        Scriptable thisObj = lastStoredScriptable(cx);
+        return f.call(cx, scope, thisObj, ScriptRuntime.emptyArgs);
+    }
+
+    public static Object add(Object val1, double val2)
+    {
+        if (val1 instanceof Scriptable)
+            val1 = ((Scriptable) val1).getDefaultValue(null);
+        if (!(val1 instanceof String))
+            return wrapDouble(toNumber(val1) + val2);
+        return ((String)val1).concat(toString(val2));
+    }
+
+    public static Object add(double val1, Object val2)
+    {
+        if (val2 instanceof Scriptable)
+            val2 = ((Scriptable) val2).getDefaultValue(null);
+        if (!(val2 instanceof String))
+            return wrapDouble(toNumber(val2) + val1);
+        return toString(val1).concat((String)val2);
+    }
+
+    public static Object elemIncrDecr(Object obj, double index,
+                                      Context cx, int incrDecrMask)
+    {
+        return ScriptRuntime.elemIncrDecr(obj, new Double(index), cx,
+                                          incrDecrMask);
+    }
+
+    public static Object[] padStart(Object[] currentArgs, int count) {
+        Object[] result = new Object[currentArgs.length + count];
+        System.arraycopy(currentArgs, 0, result, count, currentArgs.length);
+        return result;
+    }
+
+    public static void initFunction(NativeFunction fn, int functionType,
+                                    Scriptable scope, Context cx)
+    {
+        ScriptRuntime.initFunction(cx, scope, fn, functionType, false);
+    }
+
+    public static Object callSpecial(Context cx, Callable fun,
+                                     Scriptable thisObj, Object[] args,
+                                     Scriptable scope,
+                                     Scriptable callerThis, int callType,
+                                     String fileName, int lineNumber)
+    {
+        return ScriptRuntime.callSpecial(cx, fun, thisObj, args, scope,
+                                         callerThis, callType,
+                                         fileName, lineNumber);
+    }
+
+    public static Object newObjectSpecial(Context cx, Object fun,
+                                          Object[] args, Scriptable scope,
+                                          Scriptable callerThis, int callType)
+    {
+        return ScriptRuntime.newSpecial(cx, fun, args, scope, callType);
+    }
+
+    public static Double wrapDouble(double num)
+    {
+        if (num == 0.0) {
+            if (1 / num > 0) {
+                // +0.0
+                return zeroObj;
+            }
+        } else if (num == 1.0) {
+            return oneObj;
+        } else if (num == -1.0) {
+            return minusOneObj;
+        } else if (num != num) {
+            return NaNobj;
+        }
+        return new Double(num);
+    }
+
+    static String encodeIntArray(int[] array)
+    {
+        // XXX: this extremely inefficient for small integers
+        if (array == null) { return null; }
+        int n = array.length;
+        char[] buffer = new char[1 + n * 2];
+        buffer[0] = 1;
+        for (int i = 0; i != n; ++i) {
+            int value = array[i];
+            int shift = 1 + i * 2;
+            buffer[shift] = (char)(value >>> 16);
+            buffer[shift + 1] = (char)value;
+        }
+        return new String(buffer);
+    }
+
+    private static int[] decodeIntArray(String str, int arraySize)
+    {
+        // XXX: this extremely inefficient for small integers
+        if (arraySize == 0) {
+            if (str != null) throw new IllegalArgumentException();
+            return null;
+        }
+        if (str.length() != 1 + arraySize * 2 && str.charAt(0) != 1) {
+            throw new IllegalArgumentException();
+        }
+        int[] array = new int[arraySize];
+        for (int i = 0; i != arraySize; ++i) {
+            int shift = 1 + i * 2;
+            array[i] = (str.charAt(shift) << 16) | str.charAt(shift + 1);
+        }
+        return array;
+    }
+
+    public static Scriptable newArrayLiteral(Object[] objects,
+                                             String encodedInts,
+                                             int skipCount,
+                                             Context cx,
+                                             Scriptable scope)
+    {
+        int[] skipIndexces = decodeIntArray(encodedInts, skipCount);
+        return newArrayLiteral(objects, skipIndexces, cx, scope);
+    }
+
+    public static void main(final Script script, final String[] args)
+    {
+        Context.call(new ContextAction() {
+            public Object run(Context cx)
+            {
+                ScriptableObject global = getGlobal(cx);
+
+                // get the command line arguments and define "arguments"
+                // array in the top-level object
+                Object[] argsCopy = new Object[args.length];
+                System.arraycopy(args, 0, argsCopy, 0, args.length);
+                Scriptable argsObj = cx.newArray(global, argsCopy);
+                global.defineProperty("arguments", argsObj,
+                                      ScriptableObject.DONTENUM);
+                script.exec(cx, global);
+                return null;
+            }
+        });
+    }
+
+    public static void throwStopIteration(Object obj) {
+        throw new JavaScriptException(
+            NativeIterator.getStopIterationObject((Scriptable)obj), "", 0);
+    }
+
+    public static Scriptable createNativeGenerator(NativeFunction funObj,
+                                                   Scriptable scope,
+                                                   Scriptable thisObj,
+                                                   int maxLocals,
+                                                   int maxStack)
+    {
+        return new NativeGenerator(scope, funObj,
+                new GeneratorState(thisObj, maxLocals, maxStack));
+    }
+
+    public static Object[] getGeneratorStackState(Object obj) {
+        GeneratorState rgs = (GeneratorState) obj;
+        if (rgs.stackState == null)
+            rgs.stackState = new Object[rgs.maxStack];
+        return rgs.stackState;
+    }
+
+    public static Object[] getGeneratorLocalsState(Object obj) {
+        GeneratorState rgs = (GeneratorState) obj;
+        if (rgs.localsState == null)
+            rgs.localsState = new Object[rgs.maxLocals];
+        return rgs.localsState;
+    }
+
+    public static class GeneratorState {
+        static final String CLASS_NAME =
+            "org/mozilla/javascript/optimizer/OptRuntime$GeneratorState";
+
+        public int resumptionPoint;
+        static final String resumptionPoint_NAME = "resumptionPoint";
+        static final String resumptionPoint_TYPE = "I";
+        
+        public Scriptable thisObj;
+        static final String thisObj_NAME = "thisObj";
+        static final String thisObj_TYPE =
+            "Lorg/mozilla/javascript/Scriptable;";
+
+        Object[] stackState;
+        Object[] localsState;
+        int maxLocals;
+        int maxStack;
+
+        GeneratorState(Scriptable thisObj, int maxLocals, int maxStack) {
+            this.thisObj = thisObj;
+            this.maxLocals = maxLocals;
+            this.maxStack = maxStack;
+        }
+    }
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptTransformer.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptTransformer.java
new file mode 100644
index 0000000..7cf679f
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/OptTransformer.java
@@ -0,0 +1,133 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+package org.mozilla.javascript.optimizer;
+
+import org.mozilla.javascript.*;
+import java.util.Hashtable;
+
+/**
+ * This class performs node transforms to prepare for optimization.
+ *
+ * @see NodeTransformer
+ * @author Norris Boyd
+ */
+
+class OptTransformer extends NodeTransformer {
+
+    OptTransformer(Hashtable possibleDirectCalls, ObjArray directCallTargets)
+    {
+        this.possibleDirectCalls = possibleDirectCalls;
+        this.directCallTargets = directCallTargets;
+    }
+
+    protected void visitNew(Node node, ScriptOrFnNode tree) {
+        detectDirectCall(node, tree);
+        super.visitNew(node, tree);
+    }
+
+    protected void visitCall(Node node, ScriptOrFnNode tree) {
+        detectDirectCall(node, tree);
+        super.visitCall(node, tree);
+    }
+
+    private void detectDirectCall(Node node, ScriptOrFnNode tree)
+    {
+        if (tree.getType() == Token.FUNCTION) {
+            Node left = node.getFirstChild();
+
+            // count the arguments
+            int argCount = 0;
+            Node arg = left.getNext();
+            while (arg != null) {
+                arg = arg.getNext();
+                argCount++;
+            }
+
+            if (argCount == 0) {
+                OptFunctionNode.get(tree).itsContainsCalls0 = true;
+            }
+
+            /*
+             * Optimize a call site by converting call("a", b, c) into :
+             *
+             *  FunctionObjectFor"a" <-- instance variable init'd by constructor
+             *
+             *  // this is a DIRECTCALL node
+             *  fn = GetProp(tmp = GetBase("a"), "a");
+             *  if (fn == FunctionObjectFor"a")
+             *      fn.call(tmp, b, c)
+             *  else
+             *      ScriptRuntime.Call(fn, tmp, b, c)
+             */
+            if (possibleDirectCalls != null) {
+                String targetName = null;
+                if (left.getType() == Token.NAME) {
+                    targetName = left.getString();
+                } else if (left.getType() == Token.GETPROP) {
+                    targetName = left.getFirstChild().getNext().getString();
+                } else if (left.getType() == Token.GETPROPNOWARN) {
+                    throw Kit.codeBug();
+                }
+                if (targetName != null) {
+                    OptFunctionNode ofn;
+                    ofn = (OptFunctionNode)possibleDirectCalls.get(targetName);
+                    if (ofn != null
+                        && argCount == ofn.fnode.getParamCount()
+                        && !ofn.fnode.requiresActivation())
+                    {
+                        // Refuse to directCall any function with more
+                        // than 32 parameters - prevent code explosion
+                        // for wacky test cases
+                        if (argCount <= 32) {
+                            node.putProp(Node.DIRECTCALL_PROP, ofn);
+                            if (!ofn.isTargetOfDirectCall()) {
+                                int index = directCallTargets.size();
+                                directCallTargets.add(ofn);
+                                ofn.setDirectTargetIndex(index);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    private Hashtable possibleDirectCalls;
+    private ObjArray directCallTargets;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Optimizer.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Optimizer.java
new file mode 100644
index 0000000..575c7e7
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/optimizer/Optimizer.java
@@ -0,0 +1,510 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Roger Lawrence
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+
+
+package org.mozilla.javascript.optimizer;
+
+import org.mozilla.javascript.*;
+
+class Optimizer
+{
+
+    static final int NoType = 0;
+    static final int NumberType = 1;
+    static final int AnyType = 3;
+
+    // It is assumed that (NumberType | AnyType) == AnyType
+
+    void optimize(ScriptOrFnNode scriptOrFn)
+    {
+        //  run on one function at a time for now
+        int functionCount = scriptOrFn.getFunctionCount();
+        for (int i = 0; i != functionCount; ++i) {
+            OptFunctionNode f = OptFunctionNode.get(scriptOrFn, i);
+            optimizeFunction(f);
+        }
+    }
+
+    private void optimizeFunction(OptFunctionNode theFunction)
+    {
+        if (theFunction.fnode.requiresActivation()) return;
+
+        inDirectCallFunction = theFunction.isTargetOfDirectCall();
+        this.theFunction = theFunction;
+
+        ObjArray statementsArray = new ObjArray();
+        buildStatementList_r(theFunction.fnode, statementsArray);
+        Node[] theStatementNodes = new Node[statementsArray.size()];
+        statementsArray.toArray(theStatementNodes);
+
+        Block.runFlowAnalyzes(theFunction, theStatementNodes);
+
+        if (!theFunction.fnode.requiresActivation()) {
+            /*
+             * Now that we know which local vars are in fact always
+             * Numbers, we re-write the tree to take advantage of
+             * that. Any arithmetic or assignment op involving just
+             * Number typed vars is marked so that the codegen will
+             * generate non-object code.
+             */
+            parameterUsedInNumberContext = false;
+            for (int i = 0; i < theStatementNodes.length; i++) {
+                rewriteForNumberVariables(theStatementNodes[i]);
+            }
+            theFunction.setParameterNumberContext(parameterUsedInNumberContext);
+        }
+
+    }
+
+
+/*
+        Each directCall parameter is passed as a pair of values - an object
+        and a double. The value passed depends on the type of value available at
+        the call site. If a double is available, the object in java/lang/Void.TYPE
+        is passed as the object value, and if an object value is available, then
+        0.0 is passed as the double value.
+
+        The receiving routine always tests the object value before proceeding.
+        If the parameter is being accessed in a 'Number Context' then the code
+        sequence is :
+        if ("parameter_objectValue" == java/lang/Void.TYPE)
+            ...fine..., use the parameter_doubleValue
+        else
+            toNumber(parameter_objectValue)
+
+        and if the parameter is being referenced in an Object context, the code is
+        if ("parameter_objectValue" == java/lang/Void.TYPE)
+            new Double(parameter_doubleValue)
+        else
+            ...fine..., use the parameter_objectValue
+
+        If the receiving code never uses the doubleValue, it is converted on
+        entry to a Double instead.
+*/
+
+
+/*
+        We're referencing a node in a Number context (i.e. we'd prefer it
+        was a double value). If the node is a parameter in a directCall
+        function, mark it as being referenced in this context.
+*/
+    private void markDCPNumberContext(Node n)
+    {
+        if (inDirectCallFunction && n.getType() == Token.GETVAR) {
+            int varIndex = theFunction.getVarIndex(n);
+            if (theFunction.isParameter(varIndex)) {
+                parameterUsedInNumberContext = true;
+            }
+        }
+    }
+
+    private boolean convertParameter(Node n)
+    {
+        if (inDirectCallFunction && n.getType() == Token.GETVAR) {
+            int varIndex = theFunction.getVarIndex(n);
+            if (theFunction.isParameter(varIndex)) {
+                n.removeProp(Node.ISNUMBER_PROP);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private int rewriteForNumberVariables(Node n)
+    {
+        switch (n.getType()) {
+            case Token.EXPR_VOID : {
+                    Node child = n.getFirstChild();
+                    int type = rewriteForNumberVariables(child);
+                    if (type == NumberType)
+                        n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                     return NoType;
+                }
+            case Token.NUMBER :
+                n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                return NumberType;
+
+            case Token.GETVAR :
+                {
+                    int varIndex = theFunction.getVarIndex(n);
+                    if (inDirectCallFunction
+                        && theFunction.isParameter(varIndex))
+                    {
+                        n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                        return NumberType;
+                    }
+                    else if (theFunction.isNumberVar(varIndex)) {
+                        n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                        return NumberType;
+                    }
+                    return NoType;
+                }
+
+            case Token.INC :
+            case Token.DEC : {
+                    Node child = n.getFirstChild();
+                    // "child" will be GETVAR or GETPROP or GETELEM
+                    if (child.getType() == Token.GETVAR) {
+                        if (rewriteForNumberVariables(child) == NumberType) {
+                            n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                            markDCPNumberContext(child);
+                            return NumberType;
+                        }
+                      return NoType;                       
+                    }
+                    else if (child.getType() == Token.GETELEM) {
+                        return rewriteForNumberVariables(child);
+                    }
+                    return NoType;
+                }
+            case Token.SETVAR : {
+                    Node lChild = n.getFirstChild();
+                    Node rChild = lChild.getNext();
+                    int rType = rewriteForNumberVariables(rChild);
+                    int varIndex = theFunction.getVarIndex(n);
+                    if (inDirectCallFunction
+                        && theFunction.isParameter(varIndex))
+                    {
+                        if (rType == NumberType) {
+                            if (!convertParameter(rChild)) {
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                                return NumberType;
+                            }
+                            markDCPNumberContext(rChild);
+                            return NoType;
+                        }
+                        else
+                            return rType;
+                    }
+                    else if (theFunction.isNumberVar(varIndex)) {
+                        if (rType != NumberType) {
+                            n.removeChild(rChild);
+                            n.addChildToBack(
+                                new Node(Token.TO_DOUBLE, rChild));
+                        }
+                        n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                        markDCPNumberContext(rChild);
+                        return NumberType;
+                    }
+                    else {
+                        if (rType == NumberType) {
+                            if (!convertParameter(rChild)) {
+                                n.removeChild(rChild);
+                                n.addChildToBack(
+                                    new Node(Token.TO_OBJECT, rChild));
+                            }
+                        }
+                        return NoType;
+                    }
+                }
+            case Token.LE :
+            case Token.LT :
+            case Token.GE :
+            case Token.GT : {
+                    Node lChild = n.getFirstChild();
+                    Node rChild = lChild.getNext();
+                    int lType = rewriteForNumberVariables(lChild);
+                    int rType = rewriteForNumberVariables(rChild);
+                    markDCPNumberContext(lChild);
+                    markDCPNumberContext(rChild);
+
+                    if (convertParameter(lChild)) {
+                        if (convertParameter(rChild)) {
+                            return NoType;
+                        } else if (rType == NumberType) {
+                            n.putIntProp(Node.ISNUMBER_PROP, Node.RIGHT);
+                        }
+                    }
+                    else if (convertParameter(rChild)) {
+                        if (lType == NumberType) {
+                            n.putIntProp(Node.ISNUMBER_PROP, Node.LEFT);
+                        }
+                    }
+                    else {
+                        if (lType == NumberType) {
+                            if (rType == NumberType) {
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                            }
+                            else {
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.LEFT);
+                            }
+                        }
+                        else {
+                            if (rType == NumberType) {
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.RIGHT);
+                            }
+                        }
+                    }
+                    // we actually build a boolean value
+                    return NoType;
+                }
+
+            case Token.ADD : {
+                    Node lChild = n.getFirstChild();
+                    Node rChild = lChild.getNext();
+                    int lType = rewriteForNumberVariables(lChild);
+                    int rType = rewriteForNumberVariables(rChild);
+
+
+                    if (convertParameter(lChild)) {
+                        if (convertParameter(rChild)) {
+                            return NoType;
+                        }
+                        else {
+                            if (rType == NumberType) {
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.RIGHT);
+                            }
+                        }
+                    }
+                    else {
+                        if (convertParameter(rChild)) {
+                            if (lType == NumberType) {
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.LEFT);
+                            }
+                        }
+                        else {
+                            if (lType == NumberType) {
+                                if (rType == NumberType) {
+                                    n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                                    return NumberType;
+                                }
+                                else {
+                                    n.putIntProp(Node.ISNUMBER_PROP, Node.LEFT);
+                                }
+                            }
+                            else {
+                                if (rType == NumberType) {
+                                    n.putIntProp(Node.ISNUMBER_PROP,
+                                                 Node.RIGHT);
+                                }
+                            }
+                        }
+                    }
+                    return NoType;
+                }
+
+            case Token.BITXOR :
+            case Token.BITOR :
+            case Token.BITAND :
+            case Token.RSH :
+            case Token.LSH :
+            case Token.SUB :
+            case Token.MUL :
+            case Token.DIV :
+            case Token.MOD : {
+                    Node lChild = n.getFirstChild();
+                    Node rChild = lChild.getNext();
+                    int lType = rewriteForNumberVariables(lChild);
+                    int rType = rewriteForNumberVariables(rChild);
+                    markDCPNumberContext(lChild);
+                    markDCPNumberContext(rChild);
+                    if (lType == NumberType) {
+                        if (rType == NumberType) {
+                            n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                            return NumberType;
+                        }
+                        else {
+                            if (!convertParameter(rChild)) {
+                                n.removeChild(rChild);
+                                n.addChildToBack(
+                                    new Node(Token.TO_DOUBLE, rChild));
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                            }
+                            return NumberType;
+                        }
+                    }
+                    else {
+                        if (rType == NumberType) {
+                            if (!convertParameter(lChild)) {
+                                n.removeChild(lChild);
+                                n.addChildToFront(
+                                    new Node(Token.TO_DOUBLE, lChild));
+                                n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                            }
+                            return NumberType;
+                        }
+                        else {
+                            if (!convertParameter(lChild)) {
+                                n.removeChild(lChild);
+                                n.addChildToFront(
+                                    new Node(Token.TO_DOUBLE, lChild));
+                            }
+                            if (!convertParameter(rChild)) {
+                                n.removeChild(rChild);
+                                n.addChildToBack(
+                                    new Node(Token.TO_DOUBLE, rChild));
+                            }
+                            n.putIntProp(Node.ISNUMBER_PROP, Node.BOTH);
+                            return NumberType;
+                        }
+                    }
+                }
+            case Token.SETELEM :
+            case Token.SETELEM_OP : {
+                    Node arrayBase = n.getFirstChild();
+                    Node arrayIndex = arrayBase.getNext();
+                    Node rValue = arrayIndex.getNext();
+                    int baseType = rewriteForNumberVariables(arrayBase);
+                    if (baseType == NumberType) {// can never happen ???
+                        if (!convertParameter(arrayBase)) {
+                            n.removeChild(arrayBase);
+                            n.addChildToFront(
+                                new Node(Token.TO_OBJECT, arrayBase));
+                        }
+                    }
+                    int indexType = rewriteForNumberVariables(arrayIndex);
+                    if (indexType == NumberType) {
+                        // setting the ISNUMBER_PROP signals the codegen
+                        // to use the OptRuntime.setObjectIndex that takes
+                        // a double index
+                        n.putIntProp(Node.ISNUMBER_PROP, Node.LEFT);
+                        markDCPNumberContext(arrayIndex);
+                    }
+                    int rValueType = rewriteForNumberVariables(rValue);
+                    if (rValueType == NumberType) {
+                        if (!convertParameter(rValue)) {
+                            n.removeChild(rValue);
+                            n.addChildToBack(
+                                new Node(Token.TO_OBJECT, rValue));
+                        }
+                    }
+                    return NoType;
+                }
+            case Token.GETELEM : {
+                    Node arrayBase = n.getFirstChild();
+                    Node arrayIndex = arrayBase.getNext();
+                    int baseType = rewriteForNumberVariables(arrayBase);
+                    if (baseType == NumberType) {// can never happen ???
+                        if (!convertParameter(arrayBase)) {
+                            n.removeChild(arrayBase);
+                            n.addChildToFront(
+                                new Node(Token.TO_OBJECT, arrayBase));
+                        }
+                    }
+                    int indexType = rewriteForNumberVariables(arrayIndex);
+                    if (indexType == NumberType) {
+                        if (!convertParameter(arrayIndex)) {
+                            // setting the ISNUMBER_PROP signals the codegen
+                            // to use the OptRuntime.getObjectIndex that takes
+                            // a double index
+                            n.putIntProp(Node.ISNUMBER_PROP, Node.RIGHT);
+                        }
+                    }
+                    return NoType;
+                }
+            case Token.CALL :
+                {
+                    Node child = n.getFirstChild(); // the function node
+                    if (child.getType() == Token.GETELEM) {
+                        // Optimization of x[0]() is not supported
+                        // so bypass GETELEM optimization that
+                        // rewriteForNumberVariables would trigger
+                        rewriteAsObjectChildren(child, child.getFirstChild());
+                    } else {
+                        rewriteForNumberVariables(child);
+                    }
+                    child = child.getNext(); // the first arg
+
+                    OptFunctionNode target
+                            = (OptFunctionNode)n.getProp(Node.DIRECTCALL_PROP);
+                    if (target != null) {
+/*
+    we leave each child as a Number if it can be. The codegen will
+    handle moving the pairs of parameters.
+*/
+                        while (child != null) {
+                            int type = rewriteForNumberVariables(child);
+                            if (type == NumberType) {
+                                markDCPNumberContext(child);
+                            }
+                            child = child.getNext();
+                        }
+                    } else {
+                        rewriteAsObjectChildren(n, child);
+                    }
+                    return NoType;
+                }
+            default : {
+                    rewriteAsObjectChildren(n, n.getFirstChild());
+                    return NoType;
+                }
+        }
+    }
+
+    private void rewriteAsObjectChildren(Node n, Node child)
+    {
+        // Force optimized children to be objects
+        while (child != null) {
+            Node nextChild = child.getNext();
+            int type = rewriteForNumberVariables(child);
+            if (type == NumberType) {
+                if (!convertParameter(child)) {
+                    n.removeChild(child);
+                    Node nuChild = new Node(Token.TO_OBJECT, child);
+                    if (nextChild == null)
+                        n.addChildToBack(nuChild);
+                    else
+                        n.addChildBefore(nuChild, nextChild);
+                }
+            }
+            child = nextChild;
+        }
+    }
+
+    private static void buildStatementList_r(Node node, ObjArray statements)
+    {
+        int type = node.getType();
+        if (type == Token.BLOCK
+            || type == Token.LOCAL_BLOCK
+            || type == Token.LOOP
+            || type == Token.FUNCTION)
+        {
+            Node child = node.getFirstChild();
+            while (child != null) {
+                buildStatementList_r(child, statements);
+                child = child.getNext();
+            }
+        } else {
+            statements.add(node);
+        }
+    }
+
+    private boolean inDirectCallFunction;
+    OptFunctionNode theFunction;
+    private boolean parameterUsedInNumberContext;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/NativeRegExp.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/NativeRegExp.java
new file mode 100644
index 0000000..a893841
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/NativeRegExp.java
@@ -0,0 +1,2782 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Brendan Eich
+ *   Matthias Radestock
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.regexp;
+
+import java.io.Serializable;
+
+import org.mozilla.javascript.Context;
+import org.mozilla.javascript.Function;
+import org.mozilla.javascript.IdFunctionObject;
+import org.mozilla.javascript.IdScriptableObject;
+import org.mozilla.javascript.Kit;
+import org.mozilla.javascript.ScriptRuntime;
+import org.mozilla.javascript.Scriptable;
+import org.mozilla.javascript.ScriptableObject;
+import org.mozilla.javascript.Undefined;
+
+/**
+ * This class implements the RegExp native object.
+ *
+ * Revision History:
+ * Implementation in C by Brendan Eich
+ * Initial port to Java by Norris Boyd from jsregexp.c version 1.36
+ * Merged up to version 1.38, which included Unicode support.
+ * Merged bug fixes in version 1.39.
+ * Merged JSFUN13_BRANCH changes up to 1.32.2.13
+ *
+ * @author Brendan Eich
+ * @author Norris Boyd
+ */
+
+
+
+public class NativeRegExp extends IdScriptableObject implements Function
+{
+    static final long serialVersionUID = 4965263491464903264L;
+
+    private static final Object REGEXP_TAG = new Object();
+
+    public static final int JSREG_GLOB = 0x1;       // 'g' flag: global
+    public static final int JSREG_FOLD = 0x2;       // 'i' flag: fold
+    public static final int JSREG_MULTILINE = 0x4;  // 'm' flag: multiline
+
+    //type of match to perform
+    public static final int TEST = 0;
+    public static final int MATCH = 1;
+    public static final int PREFIX = 2;
+
+    private static final boolean debug = false;
+
+    private static final byte REOP_EMPTY         = 0;  /* match rest of input against rest of r.e. */
+    private static final byte REOP_ALT           = 1;  /* alternative subexpressions in kid and next */
+    private static final byte REOP_BOL           = 2;  /* beginning of input (or line if multiline) */
+    private static final byte REOP_EOL           = 3;  /* end of input (or line if multiline) */
+    private static final byte REOP_WBDRY         = 4;  /* match "" at word boundary */
+    private static final byte REOP_WNONBDRY      = 5;  /* match "" at word non-boundary */
+    private static final byte REOP_QUANT         = 6;  /* quantified atom: atom{1,2} */
+    private static final byte REOP_STAR          = 7;  /* zero or more occurrences of kid */
+    private static final byte REOP_PLUS          = 8;  /* one or more occurrences of kid */
+    private static final byte REOP_OPT           = 9;  /* optional subexpression in kid */
+    private static final byte REOP_LPAREN        = 10; /* left paren bytecode: kid is u.num'th sub-regexp */
+    private static final byte REOP_RPAREN        = 11; /* right paren bytecode */
+    private static final byte REOP_DOT           = 12; /* stands for any character */
+//    private static final byte REOP_CCLASS        = 13; /* character class: [a-f] */
+    private static final byte REOP_DIGIT         = 14; /* match a digit char: [0-9] */
+    private static final byte REOP_NONDIGIT      = 15; /* match a non-digit char: [^0-9] */
+    private static final byte REOP_ALNUM         = 16; /* match an alphanumeric char: [0-9a-z_A-Z] */
+    private static final byte REOP_NONALNUM      = 17; /* match a non-alphanumeric char: [^0-9a-z_A-Z] */
+    private static final byte REOP_SPACE         = 18; /* match a whitespace char */
+    private static final byte REOP_NONSPACE      = 19; /* match a non-whitespace char */
+    private static final byte REOP_BACKREF       = 20; /* back-reference (e.g., \1) to a parenthetical */
+    private static final byte REOP_FLAT          = 21; /* match a flat string */
+    private static final byte REOP_FLAT1         = 22; /* match a single char */
+    private static final byte REOP_JUMP          = 23; /* for deoptimized closure loops */
+//    private static final byte REOP_DOTSTAR       = 24; /* optimize .* to use a single opcode */
+//    private static final byte REOP_ANCHOR        = 25; /* like .* but skips left context to unanchored r.e. */
+//    private static final byte REOP_EOLONLY       = 26; /* $ not preceded by any pattern */
+//    private static final byte REOP_UCFLAT        = 27; /* flat Unicode string; len immediate counts chars */
+    private static final byte REOP_UCFLAT1       = 28; /* single Unicode char */
+//    private static final byte REOP_UCCLASS       = 29; /* Unicode character class, vector of chars to match */
+//    private static final byte REOP_NUCCLASS      = 30; /* negated Unicode character class */
+//    private static final byte REOP_BACKREFi      = 31; /* case-independent REOP_BACKREF */
+    private static final byte REOP_FLATi         = 32; /* case-independent REOP_FLAT */
+    private static final byte REOP_FLAT1i        = 33; /* case-independent REOP_FLAT1 */
+//    private static final byte REOP_UCFLATi       = 34; /* case-independent REOP_UCFLAT */
+    private static final byte REOP_UCFLAT1i      = 35; /* case-independent REOP_UCFLAT1 */
+//    private static final byte REOP_ANCHOR1       = 36; /* first-char discriminating REOP_ANCHOR */
+//    private static final byte REOP_NCCLASS       = 37; /* negated 8-bit character class */
+//    private static final byte REOP_DOTSTARMIN    = 38; /* ungreedy version of REOP_DOTSTAR */
+//    private static final byte REOP_LPARENNON     = 39; /* non-capturing version of REOP_LPAREN */
+//    private static final byte REOP_RPARENNON     = 40; /* non-capturing version of REOP_RPAREN */
+    private static final byte REOP_ASSERT        = 41; /* zero width positive lookahead assertion */
+    private static final byte REOP_ASSERT_NOT    = 42; /* zero width negative lookahead assertion */
+    private static final byte REOP_ASSERTTEST    = 43; /* sentinel at end of assertion child */
+    private static final byte REOP_ASSERTNOTTEST = 44; /* sentinel at end of !assertion child */
+    private static final byte REOP_MINIMALSTAR   = 45; /* non-greedy version of * */
+    private static final byte REOP_MINIMALPLUS   = 46; /* non-greedy version of + */
+    private static final byte REOP_MINIMALOPT    = 47; /* non-greedy version of ? */
+    private static final byte REOP_MINIMALQUANT  = 48; /* non-greedy version of {} */
+    private static final byte REOP_ENDCHILD      = 49; /* sentinel at end of quantifier child */
+    private static final byte REOP_CLASS         = 50; /* character class with index */
+    private static final byte REOP_REPEAT        = 51; /* directs execution of greedy quantifier */
+    private static final byte REOP_MINIMALREPEAT = 52; /* directs execution of non-greedy quantifier */
+    private static final byte REOP_END           = 53;
+     
+
+
+    public static void init(Context cx, Scriptable scope, boolean sealed)
+    {
+
+        NativeRegExp proto = new NativeRegExp();
+        proto.re = (RECompiled)compileRE(cx, "", null, false);
+        proto.activatePrototypeMap(MAX_PROTOTYPE_ID);
+        proto.setParentScope(scope);
+        proto.setPrototype(getObjectPrototype(scope));
+
+        NativeRegExpCtor ctor = new NativeRegExpCtor();
+        // Bug #324006: ECMA-262 15.10.6.1 says "The initial value of
+        // RegExp.prototype.constructor is the builtin RegExp constructor." 
+        proto.put("constructor", proto, ctor);
+
+        ScriptRuntime.setFunctionProtoAndParent(ctor, scope);
+
+        ctor.setImmunePrototypeProperty(proto);
+
+        if (sealed) {
+            proto.sealObject();
+            ctor.sealObject();
+        }
+
+        defineProperty(scope, "RegExp", ctor, ScriptableObject.DONTENUM);
+    }
+
+    NativeRegExp(Scriptable scope, Object regexpCompiled)
+    {
+        this.re = (RECompiled)regexpCompiled;
+        this.lastIndex = 0;
+        ScriptRuntime.setObjectProtoAndParent(this, scope);
+    }
+
+    public String getClassName()
+    {
+        return "RegExp";
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        return execSub(cx, scope, args, MATCH);
+    }
+
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        return (Scriptable)execSub(cx, scope, args, MATCH);
+    }
+
+    Scriptable compile(Context cx, Scriptable scope, Object[] args)
+    {
+        if (args.length > 0 && args[0] instanceof NativeRegExp) {
+            if (args.length > 1 && args[1] != Undefined.instance) {
+                // report error
+                throw ScriptRuntime.typeError0("msg.bad.regexp.compile");
+            }
+            NativeRegExp thatObj = (NativeRegExp) args[0];
+            this.re = thatObj.re;
+            this.lastIndex = thatObj.lastIndex;
+            return this;
+        }
+        String s = args.length == 0 ? "" : ScriptRuntime.toString(args[0]);
+        String global = args.length > 1 && args[1] != Undefined.instance
+            ? ScriptRuntime.toString(args[1])
+            : null;
+        this.re = (RECompiled)compileRE(cx, s, global, false);
+        this.lastIndex = 0;
+        return this;
+    }
+
+    public String toString()
+    {
+        StringBuffer buf = new StringBuffer();
+        buf.append('/');
+        if (re.source.length != 0) {
+            buf.append(re.source);
+        } else {
+            // See bugzilla 226045
+            buf.append("(?:)");
+        }
+        buf.append('/');
+        if ((re.flags & JSREG_GLOB) != 0)
+            buf.append('g');
+        if ((re.flags & JSREG_FOLD) != 0)
+            buf.append('i');
+        if ((re.flags & JSREG_MULTILINE) != 0)
+            buf.append('m');
+        return buf.toString();
+    }
+
+    NativeRegExp() {  }
+
+    private static RegExpImpl getImpl(Context cx)
+    {
+        return (RegExpImpl) ScriptRuntime.getRegExpProxy(cx);
+    }
+
+    private Object execSub(Context cx, Scriptable scopeObj,
+                           Object[] args, int matchType)
+    {
+        RegExpImpl reImpl = getImpl(cx);
+        String str;
+        if (args.length == 0) {
+            str = reImpl.input;
+            if (str == null) {
+                reportError("msg.no.re.input.for", toString());
+            }
+        } else {
+            str = ScriptRuntime.toString(args[0]);
+        }
+        double d = ((re.flags & JSREG_GLOB) != 0) ? lastIndex : 0;
+
+        Object rval;
+        if (d < 0 || str.length() < d) {
+            lastIndex = 0;
+            rval = null;
+        }
+        else {
+            int indexp[] = { (int)d };
+            rval = executeRegExp(cx, scopeObj, reImpl, str, indexp, matchType);
+            if ((re.flags & JSREG_GLOB) != 0) {
+                lastIndex = (rval == null || rval == Undefined.instance)
+                            ? 0 : indexp[0];
+            }
+        }
+        return rval;
+    }
+
+    static Object compileRE(Context cx, String str, String global, boolean flat)
+    {
+        RECompiled regexp = new RECompiled();
+        regexp.source = str.toCharArray();
+        int length = str.length();
+
+        int flags = 0;
+        if (global != null) {
+            for (int i = 0; i < global.length(); i++) {
+                char c = global.charAt(i);
+                if (c == 'g') {
+                    flags |= JSREG_GLOB;
+                } else if (c == 'i') {
+                    flags |= JSREG_FOLD;
+                } else if (c == 'm') {
+                    flags |= JSREG_MULTILINE;
+                } else {
+                    reportError("msg.invalid.re.flag", String.valueOf(c));
+                }
+            }
+        }
+        regexp.flags = flags;
+
+        CompilerState state = new CompilerState(cx, regexp.source, length, flags);
+        if (flat && length > 0) {
+if (debug) {
+System.out.println("flat = \"" + str + "\"");
+}
+            state.result = new RENode(REOP_FLAT);
+            state.result.chr = state.cpbegin[0];
+            state.result.length = length;
+            state.result.flatIndex = 0;
+            state.progLength += 5;
+        }
+        else
+            if (!parseDisjunction(state))
+                return null;
+
+        regexp.program = new byte[state.progLength + 1];
+        if (state.classCount != 0) {
+            regexp.classList = new RECharSet[state.classCount];
+            regexp.classCount = state.classCount;
+        }
+        int endPC = emitREBytecode(state, regexp, 0, state.result);
+        regexp.program[endPC++] = REOP_END;
+
+if (debug) {
+System.out.println("Prog. length = " + endPC);
+for (int i = 0; i < endPC; i++) {
+    System.out.print(regexp.program[i]);
+    if (i < (endPC - 1)) System.out.print(", ");
+}
+System.out.println();
+}
+        regexp.parenCount = state.parenCount;
+
+        // If re starts with literal, init anchorCh accordingly
+        switch (regexp.program[0]) {
+        case REOP_UCFLAT1:
+        case REOP_UCFLAT1i:
+            regexp.anchorCh = (char)getIndex(regexp.program, 1);
+            break;
+        case REOP_FLAT1:
+        case REOP_FLAT1i:
+            regexp.anchorCh = (char)(regexp.program[1] & 0xFF);
+            break;
+        case REOP_FLAT:
+        case REOP_FLATi:
+            int k = getIndex(regexp.program, 1);
+            regexp.anchorCh = regexp.source[k];
+            break;
+        }
+
+if (debug) {
+if (regexp.anchorCh >= 0) {
+    System.out.println("Anchor ch = '" + (char)regexp.anchorCh + "'");
+}
+}
+        return regexp;
+    }
+
+    static boolean isDigit(char c)
+    {
+        return '0' <= c && c <= '9';
+    }
+
+    private static boolean isWord(char c)
+    {
+        return Character.isLetter(c) || isDigit(c) || c == '_';
+    }
+
+    private static boolean isLineTerm(char c)
+    {
+        return ScriptRuntime.isJSLineTerminator(c);
+    }
+
+    private static boolean isREWhiteSpace(int c)
+    {
+        return (c == '\u0020' || c == '\u0009'
+                || c == '\n' || c == '\r'
+                || c == 0x2028 || c == 0x2029
+                || c == '\u000C' || c == '\u000B'
+                || c == '\u00A0'
+                || Character.getType((char)c) == Character.SPACE_SEPARATOR);
+    }
+
+    /*
+     *
+     * 1. If IgnoreCase is false, return ch.
+     * 2. Let u be ch converted to upper case as if by calling
+     *    String.prototype.toUpperCase on the one-character string ch.
+     * 3. If u does not consist of a single character, return ch.
+     * 4. Let cu be u's character.
+     * 5. If ch's code point value is greater than or equal to decimal 128 and cu's
+     *    code point value is less than decimal 128, then return ch.
+     * 6. Return cu.
+     */
+    private static char upcase(char ch)
+    {
+        if (ch < 128) {
+            if ('a' <= ch && ch <= 'z') {
+                return (char)(ch + ('A' - 'a'));
+            }
+            return ch;
+        }
+        char cu = Character.toUpperCase(ch);
+        if ((ch >= 128) && (cu < 128)) return ch;
+        return cu;
+    }
+
+    private static char downcase(char ch)
+    {
+        if (ch < 128) {
+            if ('A' <= ch && ch <= 'Z') {
+                return (char)(ch + ('a' - 'A'));
+            }
+            return ch;
+        }
+        char cl = Character.toLowerCase(ch);
+        if ((ch >= 128) && (cl < 128)) return ch;
+        return cl;
+    }
+
+/*
+ * Validates and converts hex ascii value.
+ */
+    private static int toASCIIHexDigit(int c)
+    {
+        if (c < '0')
+            return -1;
+        if (c <= '9') {
+            return c - '0';
+        }
+        c |= 0x20;
+        if ('a' <= c && c <= 'f') {
+            return c - 'a' + 10;
+        }
+        return -1;
+    }
+
+/*
+ * Top-down regular expression grammar, based closely on Perl4.
+ *
+ *  regexp:     altern                  A regular expression is one or more
+ *              altern '|' regexp       alternatives separated by vertical bar.
+ */
+    private static boolean parseDisjunction(CompilerState state)
+    {
+        if (!parseAlternative(state))
+            return false;
+        char[] source = state.cpbegin;
+        int index = state.cp;
+        if (index != source.length && source[index] == '|') {
+            RENode altResult;
+            ++state.cp;
+            altResult = new RENode(REOP_ALT);
+            altResult.kid = state.result;
+            if (!parseDisjunction(state))
+                return false;
+            altResult.kid2 = state.result;
+            state.result = altResult;
+            /* ALT, <next>, ..., JUMP, <end> ... JUMP <end> */
+            state.progLength += 9;
+        }
+        return true;
+    }
+
+/*
+ *  altern:     item                    An alternative is one or more items,
+ *              item altern             concatenated together.
+ */
+    private static boolean parseAlternative(CompilerState state)
+    {
+        RENode headTerm = null;
+        RENode tailTerm = null;
+        char[] source = state.cpbegin;
+        while (true) {
+            if (state.cp == state.cpend || source[state.cp] == '|'
+                || (state.parenNesting != 0 && source[state.cp] == ')'))
+            {
+                if (headTerm == null) {
+                    state.result = new RENode(REOP_EMPTY);
+                }
+                else
+                    state.result = headTerm;
+                return true;
+            }
+            if (!parseTerm(state))
+                return false;
+            if (headTerm == null)
+                headTerm = state.result;
+            else {
+                if (tailTerm == null) {
+                    headTerm.next = state.result;
+                    tailTerm = state.result;
+                    while (tailTerm.next != null) tailTerm = tailTerm.next;
+                }
+                else {
+                    tailTerm.next = state.result;
+                    tailTerm = tailTerm.next;
+                    while (tailTerm.next != null) tailTerm = tailTerm.next;
+                }
+            }
+        }
+    }
+
+    /* calculate the total size of the bitmap required for a class expression */
+    private static boolean
+    calculateBitmapSize(CompilerState state, RENode target, char[] src,
+                        int index, int end)
+    {
+        char rangeStart = 0;
+        char c;
+        int n;
+        int nDigits;
+        int i;
+        int max = 0;
+        boolean inRange = false;
+
+        target.bmsize = 0;
+
+        if (index == end)
+            return true;
+
+        if (src[index] == '^')
+            ++index;
+
+        while (index != end) {
+            int localMax = 0;
+            nDigits = 2;
+            switch (src[index]) {
+            case '\\':
+                ++index;
+                c = src[index++];
+                switch (c) {
+                case 'b':
+                    localMax = 0x8;
+                    break;
+                case 'f':
+                    localMax = 0xC;
+                    break;
+                case 'n':
+                    localMax = 0xA;
+                    break;
+                case 'r':
+                    localMax = 0xD;
+                    break;
+                case 't':
+                    localMax = 0x9;
+                    break;
+                case 'v':
+                    localMax = 0xB;
+                    break;
+                case 'c':
+                    if (((index + 1) < end) && Character.isLetter(src[index + 1]))
+                        localMax = (char)(src[index++] & 0x1F);
+                    else
+                        localMax = '\\';
+                    break;
+                case 'u':
+                    nDigits += 2;
+                    // fall thru...
+                case 'x':
+                    n = 0;
+                    for (i = 0; (i < nDigits) && (index < end); i++) {
+                        c = src[index++];
+                        n = Kit.xDigitToInt(c, n);
+                        if (n < 0) {
+                            // Back off to accepting the original
+                            // '\' as a literal
+                            index -= (i + 1);
+                            n = '\\';
+                            break;
+                        }
+                    }
+                    localMax = n;
+                    break;
+                case 'd':
+                    if (inRange) {
+                        reportError("msg.bad.range", "");
+                        return false;
+                    }
+                    localMax = '9';
+                    break;
+                case 'D':
+                case 's':
+                case 'S':
+                case 'w':
+                case 'W':
+                    if (inRange) {
+                        reportError("msg.bad.range", "");
+                        return false;
+                    }
+                    target.bmsize = 65535;
+                    return true;
+                case '0':
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                case '5':
+                case '6':
+                case '7':
+                    /*
+                     *  This is a non-ECMA extension - decimal escapes (in this
+                     *  case, octal!) are supposed to be an error inside class
+                     *  ranges, but supported here for backwards compatibility.
+                     *
+                     */
+                    n = (c - '0');
+                    c = src[index];
+                    if ('0' <= c && c <= '7') {
+                        index++;
+                        n = 8 * n + (c - '0');
+                        c = src[index];
+                        if ('0' <= c && c <= '7') {
+                            index++;
+                            i = 8 * n + (c - '0');
+                            if (i <= 0377)
+                                n = i;
+                            else
+                                index--;
+                        }
+                    }
+                    localMax = n;
+                    break;
+
+                default:
+                    localMax = c;
+                    break;
+                }
+                break;
+            default:
+                localMax = src[index++];
+                break;
+            }
+            if (inRange) {
+                if (rangeStart > localMax) {
+                    reportError("msg.bad.range", "");
+                    return false;
+                }
+                inRange = false;
+            }
+            else {
+                if (index < (end - 1)) {
+                    if (src[index] == '-') {
+                        ++index;
+                        inRange = true;
+                        rangeStart = (char)localMax;
+                        continue;
+                    }
+                }
+            }
+            if ((state.flags & JSREG_FOLD) != 0){
+                char cu = upcase((char)localMax);
+                char cd = downcase((char)localMax);
+                localMax = (cu >= cd) ? cu : cd;
+            }
+            if (localMax > max)
+                max = localMax;
+        }
+        target.bmsize = max;
+        return true;
+    }
+
+    /*
+     *  item:       assertion               An item is either an assertion or
+     *              quantatom               a quantified atom.
+     *
+     *  assertion:  '^'                     Assertions match beginning of string
+     *                                      (or line if the class static property
+     *                                      RegExp.multiline is true).
+     *              '$'                     End of string (or line if the class
+     *                                      static property RegExp.multiline is
+     *                                      true).
+     *              '\b'                    Word boundary (between \w and \W).
+     *              '\B'                    Word non-boundary.
+     *
+     *  quantatom:  atom                    An unquantified atom.
+     *              quantatom '{' n ',' m '}'
+     *                                      Atom must occur between n and m times.
+     *              quantatom '{' n ',' '}' Atom must occur at least n times.
+     *              quantatom '{' n '}'     Atom must occur exactly n times.
+     *              quantatom '*'           Zero or more times (same as {0,}).
+     *              quantatom '+'           One or more times (same as {1,}).
+     *              quantatom '?'           Zero or one time (same as {0,1}).
+     *
+     *              any of which can be optionally followed by '?' for ungreedy
+     *
+     *  atom:       '(' regexp ')'          A parenthesized regexp (what matched
+     *                                      can be addressed using a backreference,
+     *                                      see '\' n below).
+     *              '.'                     Matches any char except '\n'.
+     *              '[' classlist ']'       A character class.
+     *              '[' '^' classlist ']'   A negated character class.
+     *              '\f'                    Form Feed.
+     *              '\n'                    Newline (Line Feed).
+     *              '\r'                    Carriage Return.
+     *              '\t'                    Horizontal Tab.
+     *              '\v'                    Vertical Tab.
+     *              '\d'                    A digit (same as [0-9]).
+     *              '\D'                    A non-digit.
+     *              '\w'                    A word character, [0-9a-z_A-Z].
+     *              '\W'                    A non-word character.
+     *              '\s'                    A whitespace character, [ \b\f\n\r\t\v].
+     *              '\S'                    A non-whitespace character.
+     *              '\' n                   A backreference to the nth (n decimal
+     *                                      and positive) parenthesized expression.
+     *              '\' octal               An octal escape sequence (octal must be
+     *                                      two or three digits long, unless it is
+     *                                      0 for the null character).
+     *              '\x' hex                A hex escape (hex must be two digits).
+     *              '\c' ctrl               A control character, ctrl is a letter.
+     *              '\' literalatomchar     Any character except one of the above
+     *                                      that follow '\' in an atom.
+     *              otheratomchar           Any character not first among the other
+     *                                      atom right-hand sides.
+     */
+
+    private static void doFlat(CompilerState state, char c)
+    {
+        state.result = new RENode(REOP_FLAT);
+        state.result.chr = c;
+        state.result.length = 1;
+        state.result.flatIndex = -1;
+        state.progLength += 3;
+    }
+
+    private static int
+    getDecimalValue(char c, CompilerState state, int maxValue,
+                    String overflowMessageId)
+    {
+        boolean overflow = false;
+        int start = state.cp;
+        char[] src = state.cpbegin;
+        int value = c - '0';
+        for (; state.cp != state.cpend; ++state.cp) {
+            c = src[state.cp];
+            if (!isDigit(c)) {
+                break;
+            }
+            if (!overflow) {
+                int digit = c - '0';
+                if (value < (maxValue - digit) / 10) {
+                    value = value * 10 + digit;
+                } else {
+                    overflow = true;
+                    value = maxValue;
+                }
+            }
+        }
+        if (overflow) {
+            reportError(overflowMessageId,
+                        String.valueOf(src, start, state.cp - start));
+        }
+        return value;
+    }
+
+    private static boolean
+    parseTerm(CompilerState state)
+    {
+        char[] src = state.cpbegin;
+        char c = src[state.cp++];
+        int nDigits = 2;
+        int parenBaseCount = state.parenCount;
+        int num, tmp;
+        RENode term;
+        int termStart;
+
+        switch (c) {
+        /* assertions and atoms */
+        case '^':
+            state.result = new RENode(REOP_BOL);
+            state.progLength++;
+            return true;
+        case '$':
+            state.result = new RENode(REOP_EOL);
+            state.progLength++;
+            return true;
+        case '\\':
+            if (state.cp < state.cpend) {
+                c = src[state.cp++];
+                switch (c) {
+                /* assertion escapes */
+                case 'b' :
+                    state.result = new RENode(REOP_WBDRY);
+                    state.progLength++;
+                    return true;
+                case 'B':
+                    state.result = new RENode(REOP_WNONBDRY);
+                    state.progLength++;
+                    return true;
+                /* Decimal escape */
+                case '0':
+/*
+ * Under 'strict' ECMA 3, we interpret \0 as NUL and don't accept octal.
+ * However, (XXX and since Rhino doesn't have a 'strict' mode) we'll just
+ * behave the old way for compatibility reasons.
+ * (see http://bugzilla.mozilla.org/show_bug.cgi?id=141078)
+ *
+ */
+                    reportWarning(state.cx, "msg.bad.backref", "");
+                    /* octal escape */
+                    num = 0;
+                    while (state.cp < state.cpend) {
+                        c = src[state.cp];
+                        if ((c >= '0') && (c <= '7')) {
+                            state.cp++;
+                            tmp = 8 * num + (c - '0');
+                            if (tmp > 0377)
+                                break;
+                            num = tmp;
+                        }
+                        else
+                            break;
+                    }
+                    c = (char)(num);
+                    doFlat(state, c);
+                    break;
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                case '5':
+                case '6':
+                case '7':
+                case '8':
+                case '9':
+                    termStart = state.cp - 1;
+                    num = getDecimalValue(c, state, 0xFFFF,
+                                          "msg.overlarge.backref");
+                    if (num > state.parenCount)
+                        reportWarning(state.cx, "msg.bad.backref", "");
+                    /*
+                     * n > 9 or > count of parentheses,
+                     * then treat as octal instead.
+                     */
+                    if ((num > 9) && (num > state.parenCount)) {
+                        state.cp = termStart;
+                        num = 0;
+                        while (state.cp < state.cpend) {
+                            c = src[state.cp];
+                            if ((c >= '0') && (c <= '7')) {
+                                state.cp++;
+                                tmp = 8 * num + (c - '0');
+                                if (tmp > 0377)
+                                    break;
+                                num = tmp;
+                            }
+                            else
+                                break;
+                        }
+                        c = (char)(num);
+                        doFlat(state, c);
+                        break;
+                    }
+                    /* otherwise, it's a back-reference */
+                    state.result = new RENode(REOP_BACKREF);
+                    state.result.parenIndex = num - 1;
+                    state.progLength += 3;
+                    break;
+                /* Control escape */
+                case 'f':
+                    c = 0xC;
+                    doFlat(state, c);
+                    break;
+                case 'n':
+                    c = 0xA;
+                    doFlat(state, c);
+                    break;
+                case 'r':
+                    c = 0xD;
+                    doFlat(state, c);
+                    break;
+                case 't':
+                    c = 0x9;
+                    doFlat(state, c);
+                    break;
+                case 'v':
+                    c = 0xB;
+                    doFlat(state, c);
+                    break;
+                /* Control letter */
+                case 'c':
+                    if (((state.cp + 1) < state.cpend) &&
+                                        Character.isLetter(src[state.cp + 1]))
+                        c = (char)(src[state.cp++] & 0x1F);
+                    else {
+                        /* back off to accepting the original '\' as a literal */
+                        --state.cp;
+                        c = '\\';
+                    }
+                    doFlat(state, c);
+                    break;
+                /* UnicodeEscapeSequence */
+                case 'u':
+                    nDigits += 2;
+                    // fall thru...
+                /* HexEscapeSequence */
+                case 'x':
+                    {
+                        int n = 0;
+                        int i;
+                        for (i = 0; (i < nDigits)
+                                && (state.cp < state.cpend); i++) {
+                            c = src[state.cp++];
+                            n = Kit.xDigitToInt(c, n);
+                            if (n < 0) {
+                                // Back off to accepting the original
+                                // 'u' or 'x' as a literal
+                                state.cp -= (i + 2);
+                                n = src[state.cp++];
+                                break;
+                            }
+                        }
+                        c = (char)(n);
+                    }
+                    doFlat(state, c);
+                    break;
+                /* Character class escapes */
+                case 'd':
+                    state.result = new RENode(REOP_DIGIT);
+                    state.progLength++;
+                    break;
+                case 'D':
+                    state.result = new RENode(REOP_NONDIGIT);
+                    state.progLength++;
+                    break;
+                case 's':
+                    state.result = new RENode(REOP_SPACE);
+                    state.progLength++;
+                    break;
+                case 'S':
+                    state.result = new RENode(REOP_NONSPACE);
+                    state.progLength++;
+                    break;
+                case 'w':
+                    state.result = new RENode(REOP_ALNUM);
+                    state.progLength++;
+                    break;
+                case 'W':
+                    state.result = new RENode(REOP_NONALNUM);
+                    state.progLength++;
+                    break;
+                /* IdentityEscape */
+                default:
+                    state.result = new RENode(REOP_FLAT);
+                    state.result.chr = c;
+                    state.result.length = 1;
+                    state.result.flatIndex = state.cp - 1;
+                    state.progLength += 3;
+                    break;
+                }
+                break;
+            }
+            else {
+                /* a trailing '\' is an error */
+                reportError("msg.trail.backslash", "");
+                return false;
+            }
+        case '(': {
+            RENode result = null;
+            termStart = state.cp;
+            if (state.cp + 1 < state.cpend && src[state.cp] == '?'
+                && ((c = src[state.cp + 1]) == '=' || c == '!' || c == ':'))
+            {
+                state.cp += 2;
+                if (c == '=') {
+                    result = new RENode(REOP_ASSERT);
+                    /* ASSERT, <next>, ... ASSERTTEST */
+                    state.progLength += 4;
+                } else if (c == '!') {
+                    result = new RENode(REOP_ASSERT_NOT);
+                    /* ASSERTNOT, <next>, ... ASSERTNOTTEST */
+                    state.progLength += 4;
+                }
+            } else {
+                result = new RENode(REOP_LPAREN);
+                /* LPAREN, <index>, ... RPAREN, <index> */
+                state.progLength += 6;
+                result.parenIndex = state.parenCount++;
+            }
+            ++state.parenNesting;
+            if (!parseDisjunction(state))
+                return false;
+            if (state.cp == state.cpend || src[state.cp] != ')') {
+                reportError("msg.unterm.paren", "in regular expression"/*APPJET*/);
+                return false;
+            }
+            ++state.cp;
+            --state.parenNesting;
+            if (result != null) {
+                result.kid = state.result;
+                state.result = result;
+            }
+            break;
+        }
+        case ')':
+          reportError("msg.re.unmatched.right.paren", "");
+          return false;
+        case '[':
+            state.result = new RENode(REOP_CLASS);
+            termStart = state.cp;
+            state.result.startIndex = termStart;
+            while (true) {
+                if (state.cp == state.cpend) {
+                    reportError("msg.unterm.class", "");
+                    return false;
+                }
+                if (src[state.cp] == '\\')
+                    state.cp++;
+                else {
+                    if (src[state.cp] == ']') {
+                        state.result.kidlen = state.cp - termStart;
+                        break;
+                    }
+                }
+                state.cp++;
+            }
+            state.result.index = state.classCount++;
+            /*
+             * Call calculateBitmapSize now as we want any errors it finds
+             * to be reported during the parse phase, not at execution.
+             */
+            if (!calculateBitmapSize(state, state.result, src, termStart, state.cp++))
+                return false;
+            state.progLength += 3; /* CLASS, <index> */
+            break;
+
+        case '.':
+            state.result = new RENode(REOP_DOT);
+            state.progLength++;
+            break;
+        case '*':
+        case '+':
+        case '?':
+            reportError("msg.bad.quant", String.valueOf(src[state.cp - 1]));
+            return false;
+        default:
+            state.result = new RENode(REOP_FLAT);
+            state.result.chr = c;
+            state.result.length = 1;
+            state.result.flatIndex = state.cp - 1;
+            state.progLength += 3;
+            break;
+        }
+
+        term = state.result;
+        if (state.cp == state.cpend) {
+            return true;
+        }
+        boolean hasQ = false;
+        switch (src[state.cp]) {
+            case '+':
+                state.result = new RENode(REOP_QUANT);
+                state.result.min = 1;
+                state.result.max = -1;
+                /* <PLUS>, <parencount>, <parenindex>, <next> ... <ENDCHILD> */
+                state.progLength += 8;
+                hasQ = true;
+                break;
+            case '*':
+                state.result = new RENode(REOP_QUANT);
+                state.result.min = 0;
+                state.result.max = -1;
+                /* <STAR>, <parencount>, <parenindex>, <next> ... <ENDCHILD> */
+                state.progLength += 8;
+                hasQ = true;
+                break;
+            case '?':
+                state.result = new RENode(REOP_QUANT);
+                state.result.min = 0;
+                state.result.max = 1;
+                /* <OPT>, <parencount>, <parenindex>, <next> ... <ENDCHILD> */
+                state.progLength += 8;
+                hasQ = true;
+                break;
+            case '{':  /* balance '}' */
+            {
+                int min = 0;
+                int max = -1;
+                int leftCurl = state.cp;
+
+               /* For Perl etc. compatibility, if quntifier does not match
+                * \{\d+(,\d*)?\} exactly back off from it
+                * being a quantifier, and chew it up as a literal
+                * atom next time instead.
+                */
+
+                c = src[++state.cp];
+                if (isDigit(c)) {
+                    ++state.cp;
+                    min = getDecimalValue(c, state, 0xFFFF,
+                                          "msg.overlarge.min");
+                    c = src[state.cp];
+                    if (c == ',') {
+                        c = src[++state.cp];
+                        if (isDigit(c)) {
+                            ++state.cp;
+                            max = getDecimalValue(c, state, 0xFFFF,
+                                                  "msg.overlarge.max");
+                            c = src[state.cp];
+                            if (min > max) {
+                                reportError("msg.max.lt.min",
+                                            String.valueOf(src[state.cp]));
+                                return false;
+                            }
+                        }
+                    } else {
+                        max = min;
+                    }
+                    /* balance '{' */
+                    if (c == '}') {
+                        state.result = new RENode(REOP_QUANT);
+                        state.result.min = min;
+                        state.result.max = max;
+                        // QUANT, <min>, <max>, <parencount>,
+                        // <parenindex>, <next> ... <ENDCHILD>
+                        state.progLength += 12;
+                        hasQ = true;
+                    }
+                }
+                if (!hasQ) {
+                    state.cp = leftCurl;
+                }
+                break;
+            }
+        }
+        if (!hasQ)
+            return true;
+
+        ++state.cp;
+        state.result.kid = term;
+        state.result.parenIndex = parenBaseCount;
+        state.result.parenCount = state.parenCount - parenBaseCount;
+        if ((state.cp < state.cpend) && (src[state.cp] == '?')) {
+            ++state.cp;
+            state.result.greedy = false;
+        }
+        else
+            state.result.greedy = true;
+        return true;
+    }
+
+    private static void resolveForwardJump(byte[] array, int from, int pc)
+    {
+        if (from > pc) throw Kit.codeBug();
+        addIndex(array, from, pc - from);
+    }
+
+    private static int getOffset(byte[] array, int pc)
+    {
+        return getIndex(array, pc);
+    }
+
+    private static int addIndex(byte[] array, int pc, int index)
+    {
+        if (index < 0) throw Kit.codeBug();
+        if (index > 0xFFFF)
+            throw Context.reportRuntimeError("Too complex regexp");
+        array[pc] = (byte)(index >> 8);
+        array[pc + 1] = (byte)(index);
+        return pc + 2;
+    }
+
+    private static int getIndex(byte[] array, int pc)
+    {
+        return ((array[pc] & 0xFF) << 8) | (array[pc + 1] & 0xFF);
+    }
+
+    private static final int OFFSET_LEN = 2;
+    private static final int INDEX_LEN  = 2;
+
+    private static int
+    emitREBytecode(CompilerState state, RECompiled re, int pc, RENode t)
+    {
+        RENode nextAlt;
+        int nextAltFixup, nextTermFixup;
+        byte[] program = re.program;
+
+        while (t != null) {
+            program[pc++] = t.op;
+            switch (t.op) {
+            case REOP_EMPTY:
+                --pc;
+                break;
+            case REOP_ALT:
+                nextAlt = t.kid2;
+                nextAltFixup = pc;    /* address of next alternate */
+                pc += OFFSET_LEN;
+                pc = emitREBytecode(state, re, pc, t.kid);
+                program[pc++] = REOP_JUMP;
+                nextTermFixup = pc;    /* address of following term */
+                pc += OFFSET_LEN;
+                resolveForwardJump(program, nextAltFixup, pc);
+                pc = emitREBytecode(state, re, pc, nextAlt);
+
+                program[pc++] = REOP_JUMP;
+                nextAltFixup = pc;
+                pc += OFFSET_LEN;
+
+                resolveForwardJump(program, nextTermFixup, pc);
+                resolveForwardJump(program, nextAltFixup, pc);
+                break;
+            case REOP_FLAT:
+                /*
+                 * Consecutize FLAT's if possible.
+                 */
+                if (t.flatIndex != -1) {
+                    while ((t.next != null) && (t.next.op == REOP_FLAT)
+                            && ((t.flatIndex + t.length)
+                                            == t.next.flatIndex)) {
+                        t.length += t.next.length;
+                        t.next = t.next.next;
+                    }
+                }
+                if ((t.flatIndex != -1) && (t.length > 1)) {
+                    if ((state.flags & JSREG_FOLD) != 0)
+                        program[pc - 1] = REOP_FLATi;
+                    else
+                        program[pc - 1] = REOP_FLAT;
+                    pc = addIndex(program, pc, t.flatIndex);
+                    pc = addIndex(program, pc, t.length);
+                }
+                else {
+                    if (t.chr < 256) {
+                        if ((state.flags & JSREG_FOLD) != 0)
+                            program[pc - 1] = REOP_FLAT1i;
+                        else
+                            program[pc - 1] = REOP_FLAT1;
+                        program[pc++] = (byte)(t.chr);
+                    }
+                    else {
+                        if ((state.flags & JSREG_FOLD) != 0)
+                            program[pc - 1] = REOP_UCFLAT1i;
+                        else
+                            program[pc - 1] = REOP_UCFLAT1;
+                        pc = addIndex(program, pc, t.chr);
+                    }
+                }
+                break;
+            case REOP_LPAREN:
+                pc = addIndex(program, pc, t.parenIndex);
+                pc = emitREBytecode(state, re, pc, t.kid);
+                program[pc++] = REOP_RPAREN;
+                pc = addIndex(program, pc, t.parenIndex);
+                break;
+            case REOP_BACKREF:
+                pc = addIndex(program, pc, t.parenIndex);
+                break;
+            case REOP_ASSERT:
+                nextTermFixup = pc;
+                pc += OFFSET_LEN;
+                pc = emitREBytecode(state, re, pc, t.kid);
+                program[pc++] = REOP_ASSERTTEST;
+                resolveForwardJump(program, nextTermFixup, pc);
+                break;
+            case REOP_ASSERT_NOT:
+                nextTermFixup = pc;
+                pc += OFFSET_LEN;
+                pc = emitREBytecode(state, re, pc, t.kid);
+                program[pc++] = REOP_ASSERTNOTTEST;
+                resolveForwardJump(program, nextTermFixup, pc);
+                break;
+            case REOP_QUANT:
+                if ((t.min == 0) && (t.max == -1))
+                    program[pc - 1] = (t.greedy) ? REOP_STAR : REOP_MINIMALSTAR;
+                else
+                if ((t.min == 0) && (t.max == 1))
+                    program[pc - 1] = (t.greedy) ? REOP_OPT : REOP_MINIMALOPT;
+                else
+                if ((t.min == 1) && (t.max == -1))
+                    program[pc - 1] = (t.greedy) ? REOP_PLUS : REOP_MINIMALPLUS;
+                else {
+                    if (!t.greedy) program[pc - 1] = REOP_MINIMALQUANT;
+                    pc = addIndex(program, pc, t.min);
+                    // max can be -1 which addIndex does not accept
+                    pc = addIndex(program, pc, t.max + 1);
+                }
+                pc = addIndex(program, pc, t.parenCount);
+                pc = addIndex(program, pc, t.parenIndex);
+                nextTermFixup = pc;
+                pc += OFFSET_LEN;
+                pc = emitREBytecode(state, re, pc, t.kid);
+                program[pc++] = REOP_ENDCHILD;
+                resolveForwardJump(program, nextTermFixup, pc);
+                break;
+            case REOP_CLASS:
+                pc = addIndex(program, pc, t.index);
+                re.classList[t.index] = new RECharSet(t.bmsize, t.startIndex,
+                                                      t.kidlen);
+                break;
+            default:
+                break;
+            }
+            t = t.next;
+        }
+        return pc;
+    }
+
+    private static void
+    pushProgState(REGlobalData gData, int min, int max,
+                  REBackTrackData backTrackLastToSave,
+                  int continuation_pc, int continuation_op)
+    {
+        gData.stateStackTop = new REProgState(gData.stateStackTop, min, max,
+                                              gData.cp, backTrackLastToSave,
+                                              continuation_pc,
+                                              continuation_op);
+    }
+
+    private static REProgState
+    popProgState(REGlobalData gData)
+    {
+        REProgState state = gData.stateStackTop;
+        gData.stateStackTop = state.previous;
+        return state;
+    }
+
+    private static void
+    pushBackTrackState(REGlobalData gData, byte op, int target)
+    {
+        gData.backTrackStackTop = new REBackTrackData(gData, op, target);
+    }
+
+    /*
+     *   Consecutive literal characters.
+     */
+    private static boolean
+    flatNMatcher(REGlobalData gData, int matchChars,
+                 int length, char[] chars, int end)
+    {
+        if ((gData.cp + length) > end)
+            return false;
+        for (int i = 0; i < length; i++) {
+            if (gData.regexp.source[matchChars + i] != chars[gData.cp + i]) {
+                return false;
+            }
+        }
+        gData.cp += length;
+        return true;
+    }
+
+    private static boolean
+    flatNIMatcher(REGlobalData gData, int matchChars,
+                  int length, char[] chars, int end)
+    {
+        if ((gData.cp + length) > end)
+            return false;
+        for (int i = 0; i < length; i++) {
+            if (upcase(gData.regexp.source[matchChars + i])
+                != upcase(chars[gData.cp + i]))
+            {
+                return false;
+            }
+        }
+        gData.cp += length;
+        return true;
+    }
+
+    /*
+    1. Evaluate DecimalEscape to obtain an EscapeValue E.
+    2. If E is not a character then go to step 6.
+    3. Let ch be E's character.
+    4. Let A be a one-element RECharSet containing the character ch.
+    5. Call CharacterSetMatcher(A, false) and return its Matcher result.
+    6. E must be an integer. Let n be that integer.
+    7. If n=0 or n>NCapturingParens then throw a SyntaxError exception.
+    8. Return an internal Matcher closure that takes two arguments, a State x
+       and a Continuation c, and performs the following:
+        1. Let cap be x's captures internal array.
+        2. Let s be cap[n].
+        3. If s is undefined, then call c(x) and return its result.
+        4. Let e be x's endIndex.
+        5. Let len be s's length.
+        6. Let f be e+len.
+        7. If f>InputLength, return failure.
+        8. If there exists an integer i between 0 (inclusive) and len (exclusive)
+           such that Canonicalize(s[i]) is not the same character as
+           Canonicalize(Input [e+i]), then return failure.
+        9. Let y be the State (f, cap).
+        10. Call c(y) and return its result.
+    */
+    private static boolean
+    backrefMatcher(REGlobalData gData, int parenIndex,
+                   char[] chars, int end)
+    {
+        int len;
+        int i;
+        int parenContent = gData.parens_index(parenIndex);
+        if (parenContent == -1)
+            return true;
+
+        len = gData.parens_length(parenIndex);
+        if ((gData.cp + len) > end)
+            return false;
+
+        if ((gData.regexp.flags & JSREG_FOLD) != 0) {
+            for (i = 0; i < len; i++) {
+                if (upcase(chars[parenContent + i]) != upcase(chars[gData.cp + i]))
+                    return false;
+            }
+        }
+        else {
+            for (i = 0; i < len; i++) {
+                if (chars[parenContent + i] != chars[gData.cp + i])
+                    return false;
+            }
+        }
+        gData.cp += len;
+        return true;
+    }
+
+
+    /* Add a single character to the RECharSet */
+    private static void
+    addCharacterToCharSet(RECharSet cs, char c)
+    {
+        int byteIndex = (c / 8);
+        if (c > cs.length)
+            throw new RuntimeException();
+        cs.bits[byteIndex] |= 1 << (c & 0x7);
+    }
+
+
+    /* Add a character range, c1 to c2 (inclusive) to the RECharSet */
+    private static void
+    addCharacterRangeToCharSet(RECharSet cs, char c1, char c2)
+    {
+        int i;
+
+        int byteIndex1 = (c1 / 8);
+        int byteIndex2 = (c2 / 8);
+
+        if ((c2 > cs.length) || (c1 > c2))
+            throw new RuntimeException();
+
+        c1 &= 0x7;
+        c2 &= 0x7;
+
+        if (byteIndex1 == byteIndex2) {
+            cs.bits[byteIndex1] |= ((0xFF) >> (7 - (c2 - c1))) << c1;
+        }
+        else {
+            cs.bits[byteIndex1] |= 0xFF << c1;
+            for (i = byteIndex1 + 1; i < byteIndex2; i++)
+                cs.bits[i] = (byte)0xFF;
+            cs.bits[byteIndex2] |= (0xFF) >> (7 - c2);
+        }
+    }
+
+    /* Compile the source of the class into a RECharSet */
+    private static void
+    processCharSet(REGlobalData gData, RECharSet charSet)
+    {
+        synchronized (charSet) {
+            if (!charSet.converted) {
+                processCharSetImpl(gData, charSet);
+                charSet.converted = true;
+            }
+        }
+    }
+
+
+    private static void
+    processCharSetImpl(REGlobalData gData, RECharSet charSet)
+    {
+        int src = charSet.startIndex;
+        int end = src + charSet.strlength;
+
+        char rangeStart = 0, thisCh;
+        int byteLength;
+        char c;
+        int n;
+        int nDigits;
+        int i;
+        boolean inRange = false;
+
+        charSet.sense = true;
+        byteLength = (charSet.length / 8) + 1;
+        charSet.bits = new byte[byteLength];
+
+        if (src == end)
+            return;
+
+        if (gData.regexp.source[src] == '^') {
+            charSet.sense = false;
+            ++src;
+        }
+
+        while (src != end) {
+            nDigits = 2;
+            switch (gData.regexp.source[src]) {
+            case '\\':
+                ++src;
+                c = gData.regexp.source[src++];
+                switch (c) {
+                case 'b':
+                    thisCh = 0x8;
+                    break;
+                case 'f':
+                    thisCh = 0xC;
+                    break;
+                case 'n':
+                    thisCh = 0xA;
+                    break;
+                case 'r':
+                    thisCh = 0xD;
+                    break;
+                case 't':
+                    thisCh = 0x9;
+                    break;
+                case 'v':
+                    thisCh = 0xB;
+                    break;
+                case 'c':
+                    if (((src + 1) < end) && isWord(gData.regexp.source[src + 1]))
+                        thisCh = (char)(gData.regexp.source[src++] & 0x1F);
+                    else {
+                        --src;
+                        thisCh = '\\';
+                    }
+                    break;
+                case 'u':
+                    nDigits += 2;
+                    // fall thru
+                case 'x':
+                    n = 0;
+                    for (i = 0; (i < nDigits) && (src < end); i++) {
+                        c = gData.regexp.source[src++];
+                        int digit = toASCIIHexDigit(c);
+                        if (digit < 0) {
+                            /* back off to accepting the original '\'
+                             * as a literal
+                             */
+                            src -= (i + 1);
+                            n = '\\';
+                            break;
+                        }
+                        n = (n << 4) | digit;
+                    }
+                    thisCh = (char)(n);
+                    break;
+                case '0':
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                case '5':
+                case '6':
+                case '7':
+                    /*
+                     *  This is a non-ECMA extension - decimal escapes (in this
+                     *  case, octal!) are supposed to be an error inside class
+                     *  ranges, but supported here for backwards compatibility.
+                     *
+                     */
+                    n = (c - '0');
+                    c = gData.regexp.source[src];
+                    if ('0' <= c && c <= '7') {
+                        src++;
+                        n = 8 * n + (c - '0');
+                        c = gData.regexp.source[src];
+                        if ('0' <= c && c <= '7') {
+                            src++;
+                            i = 8 * n + (c - '0');
+                            if (i <= 0377)
+                                n = i;
+                            else
+                                src--;
+                        }
+                    }
+                    thisCh = (char)(n);
+                    break;
+
+                case 'd':
+                    addCharacterRangeToCharSet(charSet, '0', '9');
+                    continue;   /* don't need range processing */
+                case 'D':
+                    addCharacterRangeToCharSet(charSet, (char)0, (char)('0' - 1));
+                    addCharacterRangeToCharSet(charSet, (char)('9' + 1),
+                                                (char)(charSet.length));
+                    continue;
+                case 's':
+                    for (i = charSet.length; i >= 0; i--)
+                        if (isREWhiteSpace(i))
+                            addCharacterToCharSet(charSet, (char)(i));
+                    continue;
+                case 'S':
+                    for (i = charSet.length; i >= 0; i--)
+                        if (!isREWhiteSpace(i))
+                            addCharacterToCharSet(charSet, (char)(i));
+                    continue;
+                case 'w':
+                    for (i = charSet.length; i >= 0; i--)
+                        if (isWord((char)i))
+                            addCharacterToCharSet(charSet, (char)(i));
+                    continue;
+                case 'W':
+                    for (i = charSet.length; i >= 0; i--)
+                        if (!isWord((char)i))
+                            addCharacterToCharSet(charSet, (char)(i));
+                    continue;
+                default:
+                    thisCh = c;
+                    break;
+
+                }
+                break;
+
+            default:
+                thisCh = gData.regexp.source[src++];
+                break;
+
+            }
+            if (inRange) {
+                if ((gData.regexp.flags & JSREG_FOLD) != 0) {
+                    addCharacterRangeToCharSet(charSet,
+                                               upcase(rangeStart),
+                                               upcase(thisCh));
+                    addCharacterRangeToCharSet(charSet,
+                                               downcase(rangeStart),
+                                               downcase(thisCh));
+                } else {
+                    addCharacterRangeToCharSet(charSet, rangeStart, thisCh);
+                }
+                inRange = false;
+            }
+            else {
+                if ((gData.regexp.flags & JSREG_FOLD) != 0) {
+                    addCharacterToCharSet(charSet, upcase(thisCh));
+                    addCharacterToCharSet(charSet, downcase(thisCh));
+                } else {
+                    addCharacterToCharSet(charSet, thisCh);
+                }
+                if (src < (end - 1)) {
+                    if (gData.regexp.source[src] == '-') {
+                        ++src;
+                        inRange = true;
+                        rangeStart = thisCh;
+                    }
+                }
+            }
+        }
+    }
+
+
+    /*
+     *   Initialize the character set if it this is the first call.
+     *   Test the bit - if the ^ flag was specified, non-inclusion is a success
+     */
+    private static boolean
+    classMatcher(REGlobalData gData, RECharSet charSet, char ch)
+    {
+        if (!charSet.converted) {
+            processCharSet(gData, charSet);
+        }
+
+        int byteIndex = ch / 8;
+        if (charSet.sense) {
+            if ((charSet.length == 0) ||
+                 ( (ch > charSet.length)
+                    || ((charSet.bits[byteIndex] & (1 << (ch & 0x7))) == 0) ))
+                return false;
+        } else {
+            if (! ((charSet.length == 0) ||
+                     ( (ch > charSet.length)
+                        || ((charSet.bits[byteIndex] & (1 << (ch & 0x7))) == 0) )))
+                return false;
+        }
+        return true;
+    }
+
+    private static boolean
+    executeREBytecode(REGlobalData gData, char[] chars, int end)
+    {
+        int pc = 0;
+        byte program[] = gData.regexp.program;
+        int currentContinuation_op;
+        int currentContinuation_pc;
+        boolean result = false;
+
+        currentContinuation_pc = 0;
+        currentContinuation_op = REOP_END;
+if (debug) {
+System.out.println("Input = \"" + new String(chars) + "\", start at " + gData.cp);
+}
+        int op = program[pc++];
+        for (;;) {
+if (debug) {
+System.out.println("Testing at " + gData.cp + ", op = " + op);
+}
+            switch (op) {
+            case REOP_EMPTY:
+                result = true;
+                break;
+            case REOP_BOL:
+                if (gData.cp != 0) {
+                    if (gData.multiline ||
+                            ((gData.regexp.flags & JSREG_MULTILINE) != 0)) {
+                        if (!isLineTerm(chars[gData.cp - 1])) {
+                            result = false;
+                            break;
+                        }
+                    }
+                    else {
+                        result = false;
+                        break;
+                    }
+                }
+                result = true;
+                break;
+            case REOP_EOL:
+                if (gData.cp != end) {
+                    if (gData.multiline ||
+                            ((gData.regexp.flags & JSREG_MULTILINE) != 0)) {
+                        if (!isLineTerm(chars[gData.cp])) {
+                            result = false;
+                            break;
+                        }
+                    }
+                    else {
+                        result = false;
+                        break;
+                    }
+                }
+                result = true;
+                break;
+            case REOP_WBDRY:
+                result = ((gData.cp == 0 || !isWord(chars[gData.cp - 1]))
+                          ^ !((gData.cp < end) && isWord(chars[gData.cp])));
+                break;
+            case REOP_WNONBDRY:
+                result = ((gData.cp == 0 || !isWord(chars[gData.cp - 1]))
+                          ^ ((gData.cp < end) && isWord(chars[gData.cp])));
+                break;
+            case REOP_DOT:
+                result = (gData.cp != end && !isLineTerm(chars[gData.cp]));
+                if (result) {
+                    gData.cp++;
+                }
+                break;
+            case REOP_DIGIT:
+                result = (gData.cp != end && isDigit(chars[gData.cp]));
+                if (result) {
+                    gData.cp++;
+                }
+                break;
+            case REOP_NONDIGIT:
+                result = (gData.cp != end && !isDigit(chars[gData.cp]));
+                if (result) {
+                    gData.cp++;
+                }
+                break;
+            case REOP_SPACE:
+                result = (gData.cp != end && isREWhiteSpace(chars[gData.cp]));
+                if (result) {
+                    gData.cp++;
+                }
+                break;
+            case REOP_NONSPACE:
+                result = (gData.cp != end && !isREWhiteSpace(chars[gData.cp]));
+                if (result) {
+                    gData.cp++;
+                }
+                break;
+            case REOP_ALNUM:
+                result = (gData.cp != end && isWord(chars[gData.cp]));
+                if (result) {
+                    gData.cp++;
+                }
+                break;
+            case REOP_NONALNUM:
+                result = (gData.cp != end && !isWord(chars[gData.cp]));
+                if (result) {
+                    gData.cp++;
+                }
+                break;
+            case REOP_FLAT:
+                {
+                    int offset = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    int length = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    result = flatNMatcher(gData, offset, length, chars, end);
+                }
+                break;
+            case REOP_FLATi:
+                {
+                    int offset = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    int length = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    result = flatNIMatcher(gData, offset, length, chars, end);
+                }
+                break;
+            case REOP_FLAT1:
+                {
+                    char matchCh = (char)(program[pc++] & 0xFF);
+                    result = (gData.cp != end && chars[gData.cp] == matchCh);
+                    if (result) {
+                        gData.cp++;
+                    }
+                }
+                break;
+            case REOP_FLAT1i:
+                {
+                    char matchCh = (char)(program[pc++] & 0xFF);
+                    result = (gData.cp != end
+                              && upcase(chars[gData.cp]) == upcase(matchCh));
+                    if (result) {
+                        gData.cp++;
+                    }
+                }
+                break;
+            case REOP_UCFLAT1:
+                {
+                    char matchCh = (char)getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    result = (gData.cp != end && chars[gData.cp] == matchCh);
+                    if (result) {
+                        gData.cp++;
+                    }
+                }
+                break;
+            case REOP_UCFLAT1i:
+                {
+                    char matchCh = (char)getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    result = (gData.cp != end
+                              && upcase(chars[gData.cp]) == upcase(matchCh));
+                    if (result) {
+                        gData.cp++;
+                    }
+                }
+                break;
+            case REOP_ALT:
+                {
+                    int nextpc;
+                    byte nextop;
+                    pushProgState(gData, 0, 0, null,
+                                  currentContinuation_pc,
+                                  currentContinuation_op);
+                    nextpc = pc + getOffset(program, pc);
+                    nextop = program[nextpc++];
+                    pushBackTrackState(gData, nextop, nextpc);
+                    pc += INDEX_LEN;
+                    op = program[pc++];
+                }
+                continue;
+
+            case REOP_JUMP:
+                {
+                    int offset;
+                    REProgState state = popProgState(gData);
+                    currentContinuation_pc = state.continuation_pc;
+                    currentContinuation_op = state.continuation_op;
+                    offset = getOffset(program, pc);
+                    pc += offset;
+                    op = program[pc++];
+                }
+                continue;
+
+
+            case REOP_LPAREN:
+                {
+                    int parenIndex = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    gData.set_parens(parenIndex, gData.cp, 0);
+                    op = program[pc++];
+                }
+                continue;
+            case REOP_RPAREN:
+                {
+                    int cap_index;
+                    int parenIndex = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    cap_index = gData.parens_index(parenIndex);
+                    gData.set_parens(parenIndex, cap_index,
+                                     gData.cp - cap_index);
+                    if (parenIndex > gData.lastParen)
+                        gData.lastParen = parenIndex;
+                    op = program[pc++];
+                }
+                continue;
+            case REOP_BACKREF:
+                {
+                    int parenIndex = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    result = backrefMatcher(gData, parenIndex, chars, end);
+                }
+                break;
+
+            case REOP_CLASS:
+                {
+                    int index = getIndex(program, pc);
+                    pc += INDEX_LEN;
+                    if (gData.cp != end) {
+                        if (classMatcher(gData, gData.regexp.classList[index],
+                                         chars[gData.cp]))
+                        {
+                            gData.cp++;
+                            result = true;
+                            break;
+                        }
+                    }
+                    result = false;
+                }
+                break;
+
+            case REOP_ASSERT:
+            case REOP_ASSERT_NOT:
+                {
+                    byte testOp;
+                    pushProgState(gData, 0, 0, gData.backTrackStackTop,
+                                  currentContinuation_pc,
+                                  currentContinuation_op);
+                    if (op == REOP_ASSERT) {
+                        testOp = REOP_ASSERTTEST;
+                    } else {
+                        testOp = REOP_ASSERTNOTTEST;
+                    }
+                    pushBackTrackState(gData, testOp,
+                                       pc + getOffset(program, pc));
+                    pc += INDEX_LEN;
+                    op = program[pc++];
+                }
+                continue;
+
+            case REOP_ASSERTTEST:
+            case REOP_ASSERTNOTTEST:
+                {
+                    REProgState state = popProgState(gData);
+                    gData.cp = state.index;
+                    gData.backTrackStackTop = state.backTrack;
+                    currentContinuation_pc = state.continuation_pc;
+                    currentContinuation_op = state.continuation_op;
+                    if (result) {
+                        if (op == REOP_ASSERTTEST) {
+                            result = true;
+                        } else {
+                            result = false;
+                        }
+                    } else {
+                        if (op == REOP_ASSERTTEST) {
+                            // Do nothing
+                        } else {
+                            result = true;
+                        }
+                    }
+                }
+                break;
+
+            case REOP_STAR:
+            case REOP_PLUS:
+            case REOP_OPT:
+            case REOP_QUANT:
+            case REOP_MINIMALSTAR:
+            case REOP_MINIMALPLUS:
+            case REOP_MINIMALOPT:
+            case REOP_MINIMALQUANT:
+                {
+                    int min, max;
+                    boolean greedy = false;
+                    switch (op) {
+                      case REOP_STAR:
+                        greedy = true;
+                        // fallthrough
+                      case REOP_MINIMALSTAR:
+                        min = 0;
+                        max = -1;
+                        break;
+                      case REOP_PLUS:
+                        greedy = true;
+                        // fallthrough
+                      case REOP_MINIMALPLUS:
+                        min = 1;
+                        max = -1;
+                        break;
+                      case REOP_OPT:
+                        greedy = true;
+                        // fallthrough
+                      case REOP_MINIMALOPT:
+                        min = 0;
+                        max = 1;
+                        break;
+                      case REOP_QUANT:
+                        greedy = true;
+                        // fallthrough
+                      case REOP_MINIMALQUANT:
+                        min = getOffset(program, pc);
+                        pc += INDEX_LEN;
+                        // See comments in emitREBytecode for " - 1" reason
+                        max = getOffset(program, pc) - 1;
+                        pc += INDEX_LEN;
+                        break;
+                      default:
+                        throw Kit.codeBug();
+                    }
+                    pushProgState(gData, min, max, null,
+                                  currentContinuation_pc,
+                                  currentContinuation_op);
+                    if (greedy) {
+                        currentContinuation_op = REOP_REPEAT;
+                        currentContinuation_pc = pc;
+                        pushBackTrackState(gData, REOP_REPEAT, pc);
+                        /* Step over <parencount>, <parenindex> & <next> */
+                        pc += 3 * INDEX_LEN;
+                        op = program[pc++];
+                    } else {
+                        if (min != 0) {
+                            currentContinuation_op = REOP_MINIMALREPEAT;
+                            currentContinuation_pc = pc;
+                            /* <parencount> <parenindex> & <next> */
+                            pc += 3 * INDEX_LEN;
+                            op = program[pc++];
+                        } else {
+                            pushBackTrackState(gData, REOP_MINIMALREPEAT, pc);
+                            popProgState(gData);
+                            pc += 2 * INDEX_LEN;  // <parencount> & <parenindex>
+                            pc = pc + getOffset(program, pc);
+                            op = program[pc++];
+                        }
+                    }
+                }
+                continue;
+
+            case REOP_ENDCHILD:
+                // Use the current continuation.
+                pc = currentContinuation_pc;
+                op = currentContinuation_op;
+                continue;
+
+            case REOP_REPEAT:
+                {
+                    REProgState state = popProgState(gData);
+                    if (!result) {
+                        //
+                        // There's been a failure, see if we have enough
+                        // children.
+                        //
+                        if (state.min == 0)
+                            result = true;
+                        currentContinuation_pc = state.continuation_pc;
+                        currentContinuation_op = state.continuation_op;
+                        pc += 2 * INDEX_LEN;  /* <parencount> & <parenindex> */
+                        pc = pc + getOffset(program, pc);
+                        break;
+                    }
+                    else {
+                        if (state.min == 0 && gData.cp == state.index) {
+                            // matched an empty string, that'll get us nowhere
+                            result = false;
+                            currentContinuation_pc = state.continuation_pc;
+                            currentContinuation_op = state.continuation_op;
+                            pc += 2 * INDEX_LEN;
+                            pc = pc + getOffset(program, pc);
+                            break;
+                        }
+                        int new_min = state.min, new_max = state.max;
+                        if (new_min != 0) new_min--;
+                        if (new_max != -1) new_max--;
+                        if (new_max == 0) {
+                            result = true;
+                            currentContinuation_pc = state.continuation_pc;
+                            currentContinuation_op = state.continuation_op;
+                            pc += 2 * INDEX_LEN;
+                            pc = pc + getOffset(program, pc);
+                            break;
+                        }
+                        pushProgState(gData, new_min, new_max, null,
+                                      state.continuation_pc,
+                                      state.continuation_op);
+                        currentContinuation_op = REOP_REPEAT;
+                        currentContinuation_pc = pc;
+                        pushBackTrackState(gData, REOP_REPEAT, pc);
+                        int parenCount = getIndex(program, pc);
+                        pc += INDEX_LEN;
+                        int parenIndex = getIndex(program, pc);
+                        pc += 2 * INDEX_LEN;
+                        op = program[pc++];
+                        for (int k = 0; k < parenCount; k++) {
+                            gData.set_parens(parenIndex + k, -1, 0);
+                        }
+                    }
+                }
+                continue;
+
+            case REOP_MINIMALREPEAT:
+                {
+                    REProgState state = popProgState(gData);
+                    if (!result) {
+                        //
+                        // Non-greedy failure - try to consume another child.
+                        //
+                        if (state.max == -1 || state.max > 0) {
+                            pushProgState(gData, state.min, state.max, null,
+                                          state.continuation_pc,
+                                          state.continuation_op);
+                            currentContinuation_op = REOP_MINIMALREPEAT;
+                            currentContinuation_pc = pc;
+                            int parenCount = getIndex(program, pc);
+                            pc += INDEX_LEN;
+                            int parenIndex = getIndex(program, pc);
+                            pc += 2 * INDEX_LEN;
+                            for (int k = 0; k < parenCount; k++) {
+                                gData.set_parens(parenIndex + k, -1, 0);
+                            }
+                            op = program[pc++];
+                            continue;
+                        } else {
+                            // Don't need to adjust pc since we're going to pop.
+                            currentContinuation_pc = state.continuation_pc;
+                            currentContinuation_op = state.continuation_op;
+                            break;
+                        }
+                    } else {
+                        if (state.min == 0 && gData.cp == state.index) {
+                            // Matched an empty string, that'll get us nowhere.
+                            result = false;
+                            currentContinuation_pc = state.continuation_pc;
+                            currentContinuation_op = state.continuation_op;
+                            break;
+                        }
+                        int new_min = state.min, new_max = state.max;
+                        if (new_min != 0) new_min--;
+                        if (new_max != -1) new_max--;
+                        pushProgState(gData, new_min, new_max, null,
+                                      state.continuation_pc,
+                                      state.continuation_op);
+                        if (new_min != 0) {
+                            currentContinuation_op = REOP_MINIMALREPEAT;
+                            currentContinuation_pc = pc;
+                            int parenCount = getIndex(program, pc);
+                            pc += INDEX_LEN;
+                            int parenIndex = getIndex(program, pc);
+                            pc += 2 * INDEX_LEN;
+                            for (int k = 0; k < parenCount; k++) {
+                                gData.set_parens(parenIndex + k, -1, 0);
+                            }
+                            op = program[pc++];
+                        } else {
+                            currentContinuation_pc = state.continuation_pc;
+                            currentContinuation_op = state.continuation_op;
+                            pushBackTrackState(gData, REOP_MINIMALREPEAT, pc);
+                            popProgState(gData);
+                            pc += 2 * INDEX_LEN;
+                            pc = pc + getOffset(program, pc);
+                            op = program[pc++];
+                        }
+                        continue;
+                    }
+                }
+
+            case REOP_END:
+                return true;
+
+            default:
+                throw Kit.codeBug();
+
+            }
+            /*
+             *  If the match failed and there's a backtrack option, take it.
+             *  Otherwise this is a complete and utter failure.
+             */
+            if (!result) {
+                REBackTrackData backTrackData = gData.backTrackStackTop;
+                if (backTrackData != null) {
+                    gData.backTrackStackTop = backTrackData.previous;
+
+                    gData.lastParen = backTrackData.lastParen;
+
+                    // XXX: If backTrackData will no longer be used, then
+                    // there is no need to clone backTrackData.parens
+                    if (backTrackData.parens != null) {
+                        gData.parens = backTrackData.parens.clone();
+                    }
+
+                    gData.cp = backTrackData.cp;
+
+                    gData.stateStackTop = backTrackData.stateStackTop;
+
+                    currentContinuation_op
+                        = gData.stateStackTop.continuation_op;
+                    currentContinuation_pc
+                        = gData.stateStackTop.continuation_pc;
+                    pc = backTrackData.continuation_pc;
+                    op = backTrackData.continuation_op;
+                    continue;
+                }
+                else
+                    return false;
+            }
+
+            op = program[pc++];
+        }
+
+    }
+
+    private static boolean
+    matchRegExp(REGlobalData gData, RECompiled re,
+                char[] chars, int start, int end, boolean multiline)
+    {
+        if (re.parenCount != 0) {
+            gData.parens = new long[re.parenCount];
+        } else {
+            gData.parens = null;
+        }
+
+        gData.backTrackStackTop = null;
+
+        gData.stateStackTop = null;
+
+        gData.multiline = multiline;
+        gData.regexp = re;
+        gData.lastParen = 0;
+
+        int anchorCh = gData.regexp.anchorCh;
+        //
+        // have to include the position beyond the last character
+        //  in order to detect end-of-input/line condition
+        //
+        for (int i = start; i <= end; ++i) {
+            //
+            // If the first node is a literal match, step the index into
+            // the string until that match is made, or fail if it can't be
+            // found at all.
+            //
+            if (anchorCh >= 0) {
+                for (;;) {
+                    if (i == end) {
+                        return false;
+                    }
+                    char matchCh = chars[i];
+                    if (matchCh == anchorCh ||
+                            ((gData.regexp.flags & JSREG_FOLD) != 0
+                             && upcase(matchCh) == upcase((char)anchorCh)))
+                    {
+                        break;
+                    }
+                    ++i;
+                }
+            }
+            gData.cp = i;
+            for (int j = 0; j < re.parenCount; j++) {
+                gData.set_parens(j, -1, 0);
+            }
+            boolean result = executeREBytecode(gData, chars, end);
+
+            gData.backTrackStackTop = null;
+            gData.stateStackTop = null;
+            if (result) {
+                gData.skipped = i - start;
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /*
+     * indexp is assumed to be an array of length 1
+     */
+    Object executeRegExp(Context cx, Scriptable scopeObj, RegExpImpl res,
+                         String str, int indexp[], int matchType)
+    {
+        REGlobalData gData = new REGlobalData();
+
+        int start = indexp[0];
+        char[] charArray = str.toCharArray();
+        int end = charArray.length;
+        if (start > end)
+            start = end;
+        //
+        // Call the recursive matcher to do the real work.
+        //
+        boolean matches = matchRegExp(gData, re, charArray, start, end,
+                                      res.multiline);
+        if (!matches) {
+            if (matchType != PREFIX) return null;
+            return Undefined.instance;
+        }
+        int index = gData.cp;
+        int i = index;
+        indexp[0] = i;
+        int matchlen = i - (start + gData.skipped);
+        int ep = index;
+        index -= matchlen;
+        Object result;
+        Scriptable obj;
+
+        if (matchType == TEST) {
+            /*
+             * Testing for a match and updating cx.regExpImpl: don't allocate
+             * an array object, do return true.
+             */
+            result = Boolean.TRUE;
+            obj = null;
+        }
+        else {
+            /*
+             * The array returned on match has element 0 bound to the matched
+             * string, elements 1 through re.parenCount bound to the paren
+             * matches, an index property telling the length of the left context,
+             * and an input property referring to the input string.
+             */
+            Scriptable scope = getTopLevelScope(scopeObj);
+            result = ScriptRuntime.newObject(cx, scope, "Array", null);
+            obj = (Scriptable) result;
+
+            String matchstr = new String(charArray, index, matchlen);
+            obj.put(0, obj, matchstr);
+        }
+
+        if (re.parenCount == 0) {
+            res.parens = null;
+            res.lastParen = SubString.emptySubString;
+        } else {
+            SubString parsub = null;
+            int num;
+            res.parens = new SubString[re.parenCount];
+            for (num = 0; num < re.parenCount; num++) {
+                int cap_index = gData.parens_index(num);
+                String parstr;
+                if (cap_index != -1) {
+                    int cap_length = gData.parens_length(num);
+                    parsub = new SubString(charArray, cap_index, cap_length);
+                    res.parens[num] = parsub;
+                    if (matchType == TEST) continue;
+                    parstr = parsub.toString();
+                    obj.put(num+1, obj, parstr);
+                }
+                else {
+                    if (matchType != TEST)
+                        obj.put(num+1, obj, Undefined.instance);
+                }
+            }
+            res.lastParen = parsub;
+        }
+
+        if (! (matchType == TEST)) {
+            /*
+             * Define the index and input properties last for better for/in loop
+             * order (so they come after the elements).
+             */
+            obj.put("index", obj, new Integer(start + gData.skipped));
+            obj.put("input", obj, str);
+        }
+
+        if (res.lastMatch == null) {
+            res.lastMatch = new SubString();
+            res.leftContext = new SubString();
+            res.rightContext = new SubString();
+        }
+        res.lastMatch.charArray = charArray;
+        res.lastMatch.index = index;
+        res.lastMatch.length = matchlen;
+
+        res.leftContext.charArray = charArray;
+        if (cx.getLanguageVersion() == Context.VERSION_1_2) {
+            /*
+             * JS1.2 emulated Perl4.0.1.8 (patch level 36) for global regexps used
+             * in scalar contexts, and unintentionally for the string.match "list"
+             * psuedo-context.  On "hi there bye", the following would result:
+             *
+             * Language     while(/ /g){print("$`");}   s/ /$`/g
+             * perl4.036    "hi", "there"               "hihitherehi therebye"
+             * perl5        "hi", "hi there"            "hihitherehi therebye"
+             * js1.2        "hi", "there"               "hihitheretherebye"
+             *
+             * Insofar as JS1.2 always defined $` as "left context from the last
+             * match" for global regexps, it was more consistent than perl4.
+             */
+            res.leftContext.index = start;
+            res.leftContext.length = gData.skipped;
+        } else {
+            /*
+             * For JS1.3 and ECMAv2, emulate Perl5 exactly:
+             *
+             * js1.3        "hi", "hi there"            "hihitherehi therebye"
+             */
+            res.leftContext.index = 0;
+            res.leftContext.length = start + gData.skipped;
+        }
+
+        res.rightContext.charArray = charArray;
+        res.rightContext.index = ep;
+        res.rightContext.length = end - ep;
+
+        return result;
+    }
+
+    int getFlags()
+    {
+        return re.flags;
+    }
+
+    private static void reportWarning(Context cx, String messageId, String arg)
+    {
+        if (cx.hasFeature(Context.FEATURE_STRICT_MODE)) {
+            String msg = ScriptRuntime.getMessage1(messageId, arg);
+            Context.reportWarning(msg);
+        }
+    }
+
+    private static void reportError(String messageId, String arg)
+    {
+        String msg = ScriptRuntime.getMessage1(messageId, arg);
+        throw ScriptRuntime.constructError("SyntaxError", msg);
+    }
+
+// #string_id_map#
+
+    private static final int
+        Id_lastIndex    = 1,
+        Id_source       = 2,
+        Id_global       = 3,
+        Id_ignoreCase   = 4,
+        Id_multiline    = 5,
+
+        MAX_INSTANCE_ID = 5;
+
+    protected int getMaxInstanceId()
+    {
+        return MAX_INSTANCE_ID;
+    }
+
+    protected int findInstanceIdInfo(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:16:24 EDT
+        L0: { id = 0; String X = null; int c;
+            int s_length = s.length();
+            if (s_length==6) {
+                c=s.charAt(0);
+                if (c=='g') { X="global";id=Id_global; }
+                else if (c=='s') { X="source";id=Id_source; }
+            }
+            else if (s_length==9) {
+                c=s.charAt(0);
+                if (c=='l') { X="lastIndex";id=Id_lastIndex; }
+                else if (c=='m') { X="multiline";id=Id_multiline; }
+            }
+            else if (s_length==10) { X="ignoreCase";id=Id_ignoreCase; }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+// #/string_id_map#
+
+        if (id == 0) return super.findInstanceIdInfo(s);
+
+        int attr;
+        switch (id) {
+          case Id_lastIndex:
+            attr = PERMANENT | DONTENUM;
+            break;
+          case Id_source:
+          case Id_global:
+          case Id_ignoreCase:
+          case Id_multiline:
+            attr = PERMANENT | READONLY | DONTENUM;
+            break;
+          default:
+            throw new IllegalStateException();
+        }
+        return instanceIdInfo(attr, id);
+    }
+
+    protected String getInstanceIdName(int id)
+    {
+        switch (id) {
+            case Id_lastIndex:  return "lastIndex";
+            case Id_source:     return "source";
+            case Id_global:     return "global";
+            case Id_ignoreCase: return "ignoreCase";
+            case Id_multiline:  return "multiline";
+        }
+        return super.getInstanceIdName(id);
+    }
+
+    protected Object getInstanceIdValue(int id)
+    {
+        switch (id) {
+          case Id_lastIndex:
+            return ScriptRuntime.wrapNumber(lastIndex);
+          case Id_source:
+            return new String(re.source);
+          case Id_global:
+            return ScriptRuntime.wrapBoolean((re.flags & JSREG_GLOB) != 0);
+          case Id_ignoreCase:
+            return ScriptRuntime.wrapBoolean((re.flags & JSREG_FOLD) != 0);
+          case Id_multiline:
+            return ScriptRuntime.wrapBoolean((re.flags & JSREG_MULTILINE) != 0);
+        }
+        return super.getInstanceIdValue(id);
+    }
+
+    protected void setInstanceIdValue(int id, Object value)
+    {
+        if (id == Id_lastIndex) {
+            lastIndex = ScriptRuntime.toNumber(value);
+            return;
+        }
+        super.setInstanceIdValue(id, value);
+    }
+
+    protected void initPrototypeId(int id)
+    {
+        String s;
+        int arity;
+        switch (id) {
+          case Id_compile:  arity=1; s="compile";  break;
+          case Id_toString: arity=0; s="toString"; break;
+          case Id_toSource: arity=0; s="toSource"; break;
+          case Id_exec:     arity=1; s="exec";     break;
+          case Id_test:     arity=1; s="test";     break;
+          case Id_prefix:   arity=1; s="prefix";   break;
+          default: throw new IllegalArgumentException(String.valueOf(id));
+        }
+        initPrototypeMethod(REGEXP_TAG, id, s, arity);
+    }
+
+    public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+                             Scriptable thisObj, Object[] args)
+    {
+        if (!f.hasTag(REGEXP_TAG)) {
+            return super.execIdCall(f, cx, scope, thisObj, args);
+        }
+        int id = f.methodId();
+        switch (id) {
+          case Id_compile:
+            return realThis(thisObj, f).compile(cx, scope, args);
+
+          case Id_toString:
+          case Id_toSource:
+            return realThis(thisObj, f).toString();
+
+          case Id_exec:
+            return realThis(thisObj, f).execSub(cx, scope, args, MATCH);
+
+          case Id_test: {
+            Object x = realThis(thisObj, f).execSub(cx, scope, args, TEST);
+            return Boolean.TRUE.equals(x) ? Boolean.TRUE : Boolean.FALSE;
+          }
+
+          case Id_prefix:
+            return realThis(thisObj, f).execSub(cx, scope, args, PREFIX);
+        }
+        throw new IllegalArgumentException(String.valueOf(id));
+    }
+
+    private static NativeRegExp realThis(Scriptable thisObj, IdFunctionObject f)
+    {
+        if (!(thisObj instanceof NativeRegExp))
+            throw incompatibleCallError(f);
+        return (NativeRegExp)thisObj;
+    }
+
+// #string_id_map#
+    protected int findPrototypeId(String s)
+    {
+        int id;
+// #generated# Last update: 2007-05-09 08:16:24 EDT
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 4: c=s.charAt(0);
+                if (c=='e') { X="exec";id=Id_exec; }
+                else if (c=='t') { X="test";id=Id_test; }
+                break L;
+            case 6: X="prefix";id=Id_prefix; break L;
+            case 7: X="compile";id=Id_compile; break L;
+            case 8: c=s.charAt(3);
+                if (c=='o') { X="toSource";id=Id_toSource; }
+                else if (c=='t') { X="toString";id=Id_toString; }
+                break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+            break L0;
+        }
+// #/generated#
+        return id;
+    }
+
+    private static final int
+        Id_compile       = 1,
+        Id_toString      = 2,
+        Id_toSource      = 3,
+        Id_exec          = 4,
+        Id_test          = 5,
+        Id_prefix        = 6,
+
+        MAX_PROTOTYPE_ID = 6;
+
+// #/string_id_map#
+
+    private RECompiled re;
+    double lastIndex;          /* index after last match, for //g iterator */
+
+}       // class NativeRegExp
+
+class RECompiled implements Serializable
+{
+    static final long serialVersionUID = -6144956577595844213L;
+
+    char []source;          /* locked source string, sans // */
+    int parenCount;         /* number of parenthesized submatches */
+    int flags;              /* flags  */
+    byte[] program;         /* regular expression bytecode */
+    int classCount;         /* count [...] bitmaps */
+    RECharSet[] classList;  /* list of [...] bitmaps */
+    int anchorCh = -1;      /* if >= 0, then re starts with this literal char */
+}
+
+class RENode {
+
+    RENode(byte op)
+    {
+        this.op = op;
+    }
+
+    byte            op;         /* r.e. op bytecode */
+    RENode          next;       /* next in concatenation order */
+    RENode          kid;        /* first operand */
+
+    RENode          kid2;       /* second operand */
+    int             num;        /* could be a number */
+    int             parenIndex; /* or a parenthesis index */
+
+                                /* or a range */
+    int             min;
+    int             max;
+    int             parenCount;
+    boolean         greedy;
+
+                                /* or a character class */
+    int             startIndex;
+    int             kidlen;     /* length of string at kid, in chars */
+    int             bmsize;     /* bitmap size, based on max char code */
+    int             index;      /* index into class list */
+
+                                /* or a literal sequence */
+    char            chr;        /* of one character */
+    int             length;     /* or many (via the index) */
+    int             flatIndex;  /* which is -1 if not sourced */
+
+}
+
+class CompilerState {
+
+    CompilerState(Context cx, char[] source, int length, int flags)
+    {
+        this.cx = cx;
+        this.cpbegin = source;
+        this.cp = 0;
+        this.cpend = length;
+        this.flags = flags;
+        this.parenCount = 0;
+        this.classCount = 0;
+        this.progLength = 0;
+    }
+
+    Context     cx;
+    char        cpbegin[];
+    int         cpend;
+    int         cp;
+    int         flags;
+    int         parenCount;
+    int         parenNesting;
+    int         classCount;   /* number of [] encountered */
+    int         progLength;   /* estimated bytecode length */
+    RENode      result;
+}
+
+class REProgState
+{
+    REProgState(REProgState previous, int min, int max, int index,
+                REBackTrackData backTrack,
+                int continuation_pc, int continuation_op)
+    {
+        this.previous = previous;
+        this.min = min;
+        this.max = max;
+        this.index = index;
+        this.continuation_op = continuation_op;
+        this.continuation_pc = continuation_pc;
+        this.backTrack = backTrack;
+    }
+
+    REProgState previous; // previous state in stack
+
+    int min;                      /* current quantifier min */
+    int max;                      /* current quantifier max */
+    int index;                    /* progress in text */
+    int continuation_op;
+    int continuation_pc;
+    REBackTrackData backTrack; // used by ASSERT_  to recover state
+}
+
+class REBackTrackData {
+
+    REBackTrackData(REGlobalData gData, int op, int pc)
+    {
+        previous = gData.backTrackStackTop;
+        continuation_op = op;
+        continuation_pc = pc;
+        lastParen = gData.lastParen;
+        if (gData.parens != null) {
+            parens = gData.parens.clone();
+        }
+        cp = gData.cp;
+        stateStackTop = gData.stateStackTop;
+    }
+
+    REBackTrackData previous;
+
+    int continuation_op;                /* where to backtrack to */
+    int continuation_pc;
+    int lastParen;
+    long[] parens;                      /* parenthesis captures */
+    int cp;                             /* char buffer index */
+    REProgState stateStackTop;          /* state of op that backtracked */
+}
+
+class REGlobalData {
+    boolean multiline;
+    RECompiled regexp;              /* the RE in execution */
+    int lastParen;                  /* highest paren set so far */
+    int skipped;                    /* chars skipped anchoring this r.e. */
+
+    int cp;                         /* char buffer index */
+    long[] parens;                  /* parens captures */
+
+    REProgState stateStackTop;       /* stack of state of current ancestors */
+
+    REBackTrackData backTrackStackTop;  /* last matched-so-far position */
+
+
+    /**
+     * Get start of parenthesis capture contents, -1 for empty.
+     */
+    int parens_index(int i)
+    {
+        return (int)(parens[i]);
+    }
+
+    /**
+     * Get length of parenthesis capture contents.
+     */
+    int parens_length(int i)
+    {
+        return (int)(parens[i] >>> 32);
+    }
+
+    void set_parens(int i, int index, int length)
+    {
+        parens[i] = (index & 0xffffffffL) | ((long)length << 32);
+    }
+
+}
+
+/*
+ * This struct holds a bitmap representation of a class from a regexp.
+ * There's a list of these referenced by the classList field in the NativeRegExp
+ * struct below. The initial state has startIndex set to the offset in the
+ * original regexp source of the beginning of the class contents. The first
+ * use of the class converts the source representation into a bitmap.
+ *
+ */
+final class RECharSet implements Serializable
+{
+    static final long serialVersionUID = 7931787979395898394L;
+
+    RECharSet(int length, int startIndex, int strlength)
+    {
+        this.length = length;
+        this.startIndex = startIndex;
+        this.strlength = strlength;
+    }
+
+    int length;
+    int startIndex;
+    int strlength;
+
+    volatile transient boolean converted;
+    volatile transient boolean sense;
+    volatile transient byte[] bits;
+}
+
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/NativeRegExpCtor.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/NativeRegExpCtor.java
new file mode 100644
index 0000000..808d62d
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/NativeRegExpCtor.java
@@ -0,0 +1,289 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Brendan Eich
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.regexp;
+
+import org.mozilla.javascript.*;
+
+/**
+ * This class implements the RegExp constructor native object.
+ *
+ * Revision History:
+ * Implementation in C by Brendan Eich
+ * Initial port to Java by Norris Boyd from jsregexp.c version 1.36
+ * Merged up to version 1.38, which included Unicode support.
+ * Merged bug fixes in version 1.39.
+ * Merged JSFUN13_BRANCH changes up to 1.32.2.11
+ *
+ * @author Brendan Eich
+ * @author Norris Boyd
+ */
+class NativeRegExpCtor extends BaseFunction
+{
+    static final long serialVersionUID = -5733330028285400526L;
+
+    NativeRegExpCtor()
+    {
+    }
+
+    public String getFunctionName()
+    {
+        return "RegExp";
+    }
+
+    public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+                       Object[] args)
+    {
+        if (args.length > 0 && args[0] instanceof NativeRegExp &&
+            (args.length == 1 || args[1] == Undefined.instance))
+        {
+            return args[0];
+        }
+        return construct(cx, scope, args);
+    }
+
+    public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+    {
+        NativeRegExp re = new NativeRegExp();
+        re.compile(cx, scope, args);
+        ScriptRuntime.setObjectProtoAndParent(re, scope);
+        return re;
+    }
+
+    private static RegExpImpl getImpl()
+    {
+        Context cx = Context.getCurrentContext();
+        return (RegExpImpl) ScriptRuntime.getRegExpProxy(cx);
+    }
+
+// #string_id_map#
+
+    private static final int
+        Id_multiline     = 1,
+        Id_STAR          = 2,  // #string=$*#
+
+        Id_input         = 3,
+        Id_UNDERSCORE    = 4,  // #string=$_#
+
+        Id_lastMatch     = 5,
+        Id_AMPERSAND     = 6,  // #string=$&#
+
+        Id_lastParen     = 7,
+        Id_PLUS          = 8,  // #string=$+#
+
+        Id_leftContext   = 9,
+        Id_BACK_QUOTE    = 10, // #string=$`#
+
+        Id_rightContext  = 11,
+        Id_QUOTE         = 12, // #string=$'#
+
+        DOLLAR_ID_BASE   = 12;
+
+    private static final int
+        Id_DOLLAR_1 = DOLLAR_ID_BASE + 1, // #string=$1#
+        Id_DOLLAR_2 = DOLLAR_ID_BASE + 2, // #string=$2#
+        Id_DOLLAR_3 = DOLLAR_ID_BASE + 3, // #string=$3#
+        Id_DOLLAR_4 = DOLLAR_ID_BASE + 4, // #string=$4#
+        Id_DOLLAR_5 = DOLLAR_ID_BASE + 5, // #string=$5#
+        Id_DOLLAR_6 = DOLLAR_ID_BASE + 6, // #string=$6#
+        Id_DOLLAR_7 = DOLLAR_ID_BASE + 7, // #string=$7#
+        Id_DOLLAR_8 = DOLLAR_ID_BASE + 8, // #string=$8#
+        Id_DOLLAR_9 = DOLLAR_ID_BASE + 9, // #string=$9#
+
+        MAX_INSTANCE_ID = DOLLAR_ID_BASE + 9;
+
+    protected int getMaxInstanceId()
+    {
+        return super.getMaxInstanceId() + MAX_INSTANCE_ID;
+    }
+
+    protected int findInstanceIdInfo(String s) {
+        int id;
+// #generated# Last update: 2001-05-24 16:09:31 GMT+02:00
+        L0: { id = 0; String X = null; int c;
+            L: switch (s.length()) {
+            case 2: switch (s.charAt(1)) {
+                case '&': if (s.charAt(0)=='$') {id=Id_AMPERSAND; break L0;} break L;
+                case '\'': if (s.charAt(0)=='$') {id=Id_QUOTE; break L0;} break L;
+                case '*': if (s.charAt(0)=='$') {id=Id_STAR; break L0;} break L;
+                case '+': if (s.charAt(0)=='$') {id=Id_PLUS; break L0;} break L;
+                case '1': if (s.charAt(0)=='$') {id=Id_DOLLAR_1; break L0;} break L;
+                case '2': if (s.charAt(0)=='$') {id=Id_DOLLAR_2; break L0;} break L;
+                case '3': if (s.charAt(0)=='$') {id=Id_DOLLAR_3; break L0;} break L;
+                case '4': if (s.charAt(0)=='$') {id=Id_DOLLAR_4; break L0;} break L;
+                case '5': if (s.charAt(0)=='$') {id=Id_DOLLAR_5; break L0;} break L;
+                case '6': if (s.charAt(0)=='$') {id=Id_DOLLAR_6; break L0;} break L;
+                case '7': if (s.charAt(0)=='$') {id=Id_DOLLAR_7; break L0;} break L;
+                case '8': if (s.charAt(0)=='$') {id=Id_DOLLAR_8; break L0;} break L;
+                case '9': if (s.charAt(0)=='$') {id=Id_DOLLAR_9; break L0;} break L;
+                case '_': if (s.charAt(0)=='$') {id=Id_UNDERSCORE; break L0;} break L;
+                case '`': if (s.charAt(0)=='$') {id=Id_BACK_QUOTE; break L0;} break L;
+                } break L;
+            case 5: X="input";id=Id_input; break L;
+            case 9: c=s.charAt(4);
+                if (c=='M') { X="lastMatch";id=Id_lastMatch; }
+                else if (c=='P') { X="lastParen";id=Id_lastParen; }
+                else if (c=='i') { X="multiline";id=Id_multiline; }
+                break L;
+            case 11: X="leftContext";id=Id_leftContext; break L;
+            case 12: X="rightContext";id=Id_rightContext; break L;
+            }
+            if (X!=null && X!=s && !X.equals(s)) id = 0;
+        }
+// #/generated#
+
+        if (id == 0) return super.findInstanceIdInfo(s);
+
+        int attr;
+        switch (id) {
+          case Id_multiline:
+          case Id_STAR:
+          case Id_input:
+          case Id_UNDERSCORE:
+            attr = PERMANENT;
+            break;
+          default:
+            attr = PERMANENT | READONLY;
+            break;
+        }
+
+        return instanceIdInfo(attr, super.getMaxInstanceId() + id);
+    }
+
+// #/string_id_map#
+
+    protected String getInstanceIdName(int id)
+    {
+        int shifted = id - super.getMaxInstanceId();
+        if (1 <= shifted && shifted <= MAX_INSTANCE_ID) {
+            switch (shifted) {
+                case Id_multiline:    return "multiline";
+                case Id_STAR:         return "$*";
+
+                case Id_input:        return "input";
+                case Id_UNDERSCORE:   return "$_";
+
+                case Id_lastMatch:    return "lastMatch";
+                case Id_AMPERSAND:    return "$&";
+
+                case Id_lastParen:    return "lastParen";
+                case Id_PLUS:         return "$+";
+
+                case Id_leftContext:  return "leftContext";
+                case Id_BACK_QUOTE:   return "$`";
+
+                case Id_rightContext: return "rightContext";
+                case Id_QUOTE:        return "$'";
+            }
+            // Must be one of $1..$9, convert to 0..8
+            int substring_number = shifted - DOLLAR_ID_BASE - 1;
+            char[] buf = { '$', (char)('1' + substring_number) };
+            return new String(buf);
+        }
+        return super.getInstanceIdName(id);
+    }
+
+    protected Object getInstanceIdValue(int id)
+    {
+        int shifted = id - super.getMaxInstanceId();
+        if (1 <= shifted && shifted <= MAX_INSTANCE_ID) {
+            RegExpImpl impl = getImpl();
+            Object stringResult;
+            switch (shifted) {
+              case Id_multiline:
+              case Id_STAR:
+                return ScriptRuntime.wrapBoolean(impl.multiline);
+
+              case Id_input:
+              case Id_UNDERSCORE:
+                stringResult = impl.input;
+                break;
+
+              case Id_lastMatch:
+              case Id_AMPERSAND:
+                stringResult = impl.lastMatch;
+                break;
+
+              case Id_lastParen:
+              case Id_PLUS:
+                stringResult = impl.lastParen;
+                break;
+
+              case Id_leftContext:
+              case Id_BACK_QUOTE:
+                stringResult = impl.leftContext;
+                break;
+
+              case Id_rightContext:
+              case Id_QUOTE:
+                stringResult = impl.rightContext;
+                break;
+
+              default:
+                {
+                    // Must be one of $1..$9, convert to 0..8
+                    int substring_number = shifted - DOLLAR_ID_BASE - 1;
+                    stringResult = impl.getParenSubString(substring_number);
+                    break;
+                }
+            }
+            return (stringResult == null) ? "" : stringResult.toString();
+        }
+        return super.getInstanceIdValue(id);
+    }
+
+    protected void setInstanceIdValue(int id, Object value)
+    {
+        int shifted = id - super.getMaxInstanceId();
+        switch (shifted) {
+            case Id_multiline:
+            case Id_STAR:
+                getImpl().multiline = ScriptRuntime.toBoolean(value);
+                return;
+
+            case Id_input:
+            case Id_UNDERSCORE:
+                getImpl().input = ScriptRuntime.toString(value);
+                return;
+        }
+        super.setInstanceIdValue(id, value);
+    }
+
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/RegExpImpl.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/RegExpImpl.java
new file mode 100644
index 0000000..4b0a303
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/RegExpImpl.java
@@ -0,0 +1,541 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.regexp;
+
+import org.mozilla.javascript.*;
+
+/**
+ *
+ */
+public class RegExpImpl implements RegExpProxy {
+
+    public boolean isRegExp(Scriptable obj) {
+        return obj instanceof NativeRegExp;
+    }
+
+    public Object compileRegExp(Context cx, String source, String flags)
+    {
+        return NativeRegExp.compileRE(cx, source, flags, false);
+    }
+
+    public Scriptable wrapRegExp(Context cx, Scriptable scope,
+                                 Object compiled)
+    {
+        return new NativeRegExp(scope, compiled);
+    }
+
+    public Object action(Context cx, Scriptable scope,
+                         Scriptable thisObj, Object[] args,
+                         int actionType)
+    {
+        GlobData data = new GlobData();
+        data.mode = actionType;
+
+        switch (actionType) {
+          case RA_MATCH:
+            {
+                Object rval;
+                data.optarg = 1;
+                rval = matchOrReplace(cx, scope, thisObj, args,
+                                      this, data, false);
+                return data.arrayobj == null ? rval : data.arrayobj;
+            }
+
+          case RA_SEARCH:
+            data.optarg = 1;
+            return matchOrReplace(cx, scope, thisObj, args,
+                                  this, data, false);
+
+          case RA_REPLACE:
+            {
+                Object arg1 = args.length < 2 ? Undefined.instance : args[1];
+                String repstr = null;
+                Function lambda = null;
+                if (arg1 instanceof Function) {
+                    lambda = (Function) arg1;
+                } else {
+                    repstr = ScriptRuntime.toString(arg1);
+                }
+
+                data.optarg = 2;
+                data.lambda = lambda;
+                data.repstr = repstr;
+                data.dollar = repstr == null ? -1 : repstr.indexOf('$');
+                data.charBuf = null;
+                data.leftIndex = 0;
+                Object val = matchOrReplace(cx, scope, thisObj, args,
+                                            this, data, true);
+                SubString rc = this.rightContext;
+
+                if (data.charBuf == null) {
+                    if (data.global || val == null
+                        || !val.equals(Boolean.TRUE))
+                    {
+                        /* Didn't match even once. */
+                        return data.str;
+                    }
+                    SubString lc = this.leftContext;
+                    replace_glob(data, cx, scope, this, lc.index, lc.length);
+                }
+                data.charBuf.append(rc.charArray, rc.index, rc.length);
+                return data.charBuf.toString();
+            }
+
+          default:
+            throw Kit.codeBug();
+        }
+    }
+
+    /**
+     * Analog of C match_or_replace.
+     */
+    private static Object matchOrReplace(Context cx, Scriptable scope,
+                                         Scriptable thisObj, Object[] args,
+                                         RegExpImpl reImpl,
+                                         GlobData data, boolean forceFlat)
+    {
+        NativeRegExp re;
+
+        String str = ScriptRuntime.toString(thisObj);
+        data.str = str;
+        Scriptable topScope = ScriptableObject.getTopLevelScope(scope);
+
+        if (args.length == 0) {
+            Object compiled = NativeRegExp.compileRE(cx, "", "", false);
+            re = new NativeRegExp(topScope, compiled);
+        } else if (args[0] instanceof NativeRegExp) {
+            re = (NativeRegExp) args[0];
+        } else {
+            String src = ScriptRuntime.toString(args[0]);
+            String opt;
+            if (data.optarg < args.length) {
+                args[0] = src;
+                opt = ScriptRuntime.toString(args[data.optarg]);
+            } else {
+                opt = null;
+            }
+            Object compiled = NativeRegExp.compileRE(cx, src, opt, forceFlat);
+            re = new NativeRegExp(topScope, compiled);
+        }
+        data.regexp = re;
+
+        data.global = (re.getFlags() & NativeRegExp.JSREG_GLOB) != 0;
+        int[] indexp = { 0 };
+        Object result = null;
+        if (data.mode == RA_SEARCH) {
+            result = re.executeRegExp(cx, scope, reImpl,
+                                      str, indexp, NativeRegExp.TEST);
+            if (result != null && result.equals(Boolean.TRUE))
+                result = new Integer(reImpl.leftContext.length);
+            else
+                result = new Integer(-1);
+        } else if (data.global) {
+            re.lastIndex = 0;
+            for (int count = 0; indexp[0] <= str.length(); count++) {
+                result = re.executeRegExp(cx, scope, reImpl,
+                                          str, indexp, NativeRegExp.TEST);
+                if (result == null || !result.equals(Boolean.TRUE))
+                    break;
+                if (data.mode == RA_MATCH) {
+                    match_glob(data, cx, scope, count, reImpl);
+                } else {
+                    if (data.mode != RA_REPLACE) Kit.codeBug();
+                    SubString lastMatch = reImpl.lastMatch;
+                    int leftIndex = data.leftIndex;
+                    int leftlen = lastMatch.index - leftIndex;
+                    data.leftIndex = lastMatch.index + lastMatch.length;
+                    replace_glob(data, cx, scope, reImpl, leftIndex, leftlen);
+                }
+                if (reImpl.lastMatch.length == 0) {
+                    if (indexp[0] == str.length())
+                        break;
+                    indexp[0]++;
+                }
+            }
+        } else {
+            result = re.executeRegExp(cx, scope, reImpl, str, indexp,
+                                      ((data.mode == RA_REPLACE)
+                                       ? NativeRegExp.TEST
+                                       : NativeRegExp.MATCH));
+        }
+
+        return result;
+    }
+
+
+
+    public int find_split(Context cx, Scriptable scope, String target,
+                          String separator, Scriptable reObj,
+                          int[] ip, int[] matchlen,
+                          boolean[] matched, String[][] parensp)
+    {
+        int i = ip[0];
+        int length = target.length();
+        int result;
+
+        int version = cx.getLanguageVersion();
+        NativeRegExp re = (NativeRegExp) reObj;
+        again:
+        while (true) {  // imitating C label
+            /* JS1.2 deviated from Perl by never matching at end of string. */
+            int ipsave = ip[0]; // reuse ip to save object creation
+            ip[0] = i;
+            Object ret = re.executeRegExp(cx, scope, this, target, ip,
+                                          NativeRegExp.TEST);
+            if (ret != Boolean.TRUE) {
+                // Mismatch: ensure our caller advances i past end of string.
+                ip[0] = ipsave;
+                matchlen[0] = 1;
+                matched[0] = false;
+                return length;
+            }
+            i = ip[0];
+            ip[0] = ipsave;
+            matched[0] = true;
+
+            SubString sep = this.lastMatch;
+            matchlen[0] = sep.length;
+            if (matchlen[0] == 0) {
+                /*
+                 * Empty string match: never split on an empty
+                 * match at the start of a find_split cycle.  Same
+                 * rule as for an empty global match in
+                 * match_or_replace.
+                 */
+                if (i == ip[0]) {
+                    /*
+                     * "Bump-along" to avoid sticking at an empty
+                     * match, but don't bump past end of string --
+                     * our caller must do that by adding
+                     * sep->length to our return value.
+                     */
+                    if (i == length) {
+                        if (version == Context.VERSION_1_2) {
+                            matchlen[0] = 1;
+                            result = i;
+                        }
+                        else
+                            result = -1;
+                        break;
+                    }
+                    i++;
+                    continue again; // imitating C goto
+                }
+            }
+            // PR_ASSERT((size_t)i >= sep->length);
+            result = i - matchlen[0];
+            break;
+        }
+        int size = (parens == null) ? 0 : parens.length;
+        parensp[0] = new String[size];
+        for (int num = 0; num < size; num++) {
+            SubString parsub = getParenSubString(num);
+            parensp[0][num] = parsub.toString();
+        }
+        return result;
+    }
+
+    /**
+     * Analog of REGEXP_PAREN_SUBSTRING in C jsregexp.h.
+     * Assumes zero-based; i.e., for $3, i==2
+     */
+    SubString getParenSubString(int i)
+    {
+        if (parens != null && i < parens.length) {
+            SubString parsub = parens[i];
+            if (parsub != null) {
+                return parsub;
+            }
+        }
+        return SubString.emptySubString;
+    }
+
+    /*
+     * Analog of match_glob() in jsstr.c
+     */
+    private static void match_glob(GlobData mdata, Context cx,
+                                   Scriptable scope, int count,
+                                   RegExpImpl reImpl)
+    {
+        if (mdata.arrayobj == null) {
+            Scriptable s = ScriptableObject.getTopLevelScope(scope);
+            mdata.arrayobj = ScriptRuntime.newObject(cx, s, "Array", null);
+        }
+        SubString matchsub = reImpl.lastMatch;
+        String matchstr = matchsub.toString();
+        mdata.arrayobj.put(count, mdata.arrayobj, matchstr);
+    }
+
+    /*
+     * Analog of replace_glob() in jsstr.c
+     */
+    private static void replace_glob(GlobData rdata, Context cx,
+                                     Scriptable scope, RegExpImpl reImpl,
+                                     int leftIndex, int leftlen)
+    {
+        int replen;
+        String lambdaStr;
+        if (rdata.lambda != null) {
+            // invoke lambda function with args lastMatch, $1, $2, ... $n,
+            // leftContext.length, whole string.
+            SubString[] parens = reImpl.parens;
+            int parenCount = (parens == null) ? 0 : parens.length;
+            Object[] args = new Object[parenCount + 3];
+            args[0] = reImpl.lastMatch.toString();
+            for (int i=0; i < parenCount; i++) {
+                SubString sub = parens[i];
+                if (sub != null) {
+                    args[i+1] = sub.toString();
+                } else {
+                    args[i+1] = Undefined.instance;
+                }
+            }
+            args[parenCount+1] = new Integer(reImpl.leftContext.length);
+            args[parenCount+2] = rdata.str;
+            // This is a hack to prevent expose of reImpl data to
+            // JS function which can run new regexps modifing
+            // regexp that are used later by the engine.
+            // TODO: redesign is necessary
+            if (reImpl != ScriptRuntime.getRegExpProxy(cx)) Kit.codeBug();
+            RegExpImpl re2 = new RegExpImpl();
+            re2.multiline = reImpl.multiline;
+            re2.input = reImpl.input;
+            ScriptRuntime.setRegExpProxy(cx, re2);
+            try {
+                Scriptable parent = ScriptableObject.getTopLevelScope(scope);
+                Object result = rdata.lambda.call(cx, parent, parent, args);
+                lambdaStr = ScriptRuntime.toString(result);
+            } finally {
+                ScriptRuntime.setRegExpProxy(cx, reImpl);
+            }
+            replen = lambdaStr.length();
+        } else {
+            lambdaStr = null;
+            replen = rdata.repstr.length();
+            if (rdata.dollar >= 0) {
+                int[] skip = new int[1];
+                int dp = rdata.dollar;
+                do {
+                    SubString sub = interpretDollar(cx, reImpl, rdata.repstr,
+                                                    dp, skip);
+                    if (sub != null) {
+                        replen += sub.length - skip[0];
+                        dp += skip[0];
+                    } else {
+                        ++dp;
+                    }
+                    dp = rdata.repstr.indexOf('$', dp);
+                } while (dp >= 0);
+            }
+        }
+
+        int growth = leftlen + replen + reImpl.rightContext.length;
+        StringBuffer charBuf = rdata.charBuf;
+        if (charBuf == null) {
+            charBuf = new StringBuffer(growth);
+            rdata.charBuf = charBuf;
+        } else {
+            charBuf.ensureCapacity(rdata.charBuf.length() + growth);
+        }
+
+        charBuf.append(reImpl.leftContext.charArray, leftIndex, leftlen);
+        if (rdata.lambda != null) {
+            charBuf.append(lambdaStr);
+        } else {
+            do_replace(rdata, cx, reImpl);
+        }
+    }
+
+    private static SubString interpretDollar(Context cx, RegExpImpl res,
+                                             String da, int dp, int[] skip)
+    {
+        char dc;
+        int num, tmp;
+
+        if (da.charAt(dp) != '$') Kit.codeBug();
+
+        /* Allow a real backslash (literal "\\") to escape "$1" etc. */
+        int version = cx.getLanguageVersion();
+        if (version != Context.VERSION_DEFAULT
+            && version <= Context.VERSION_1_4)
+        {
+            if (dp > 0 && da.charAt(dp - 1) == '\\')
+                return null;
+        }
+        int daL = da.length();
+        if (dp + 1 >= daL)
+            return null;
+        /* Interpret all Perl match-induced dollar variables. */
+        dc = da.charAt(dp + 1);
+        if (NativeRegExp.isDigit(dc)) {
+            int cp;
+            if (version != Context.VERSION_DEFAULT
+                && version <= Context.VERSION_1_4)
+            {
+                if (dc == '0')
+                    return null;
+                /* Check for overflow to avoid gobbling arbitrary decimal digits. */
+                num = 0;
+                cp = dp;
+                while (++cp < daL && NativeRegExp.isDigit(dc = da.charAt(cp)))
+                {
+                    tmp = 10 * num + (dc - '0');
+                    if (tmp < num)
+                        break;
+                    num = tmp;
+                }
+            }
+            else {  /* ECMA 3, 1-9 or 01-99 */
+                int parenCount = (res.parens == null) ? 0 : res.parens.length;
+                num = dc - '0';
+                if (num > parenCount)
+                    return null;
+                cp = dp + 2;
+                if ((dp + 2) < daL) {
+                    dc = da.charAt(dp + 2);
+                    if (NativeRegExp.isDigit(dc)) {
+                        tmp = 10 * num + (dc - '0');
+                        if (tmp <= parenCount) {
+                            cp++;
+                            num = tmp;
+                        }
+                    }
+                }
+                if (num == 0) return null;  /* $0 or $00 is not valid */
+            }
+            /* Adjust num from 1 $n-origin to 0 array-index-origin. */
+            num--;
+            skip[0] = cp - dp;
+            return res.getParenSubString(num);
+        }
+
+        skip[0] = 2;
+        switch (dc) {
+          case '$':
+            return new SubString("$");
+          case '&':
+            return res.lastMatch;
+          case '+':
+            return res.lastParen;
+          case '`':
+            if (version == Context.VERSION_1_2) {
+                /*
+                 * JS1.2 imitated the Perl4 bug where left context at each step
+                 * in an iterative use of a global regexp started from last match,
+                 * not from the start of the target string.  But Perl4 does start
+                 * $` at the beginning of the target string when it is used in a
+                 * substitution, so we emulate that special case here.
+                 */
+                res.leftContext.index = 0;
+                res.leftContext.length = res.lastMatch.index;
+            }
+            return res.leftContext;
+          case '\'':
+            return res.rightContext;
+        }
+        return null;
+    }
+
+    /**
+     * Analog of do_replace in jsstr.c
+     */
+    private static void do_replace(GlobData rdata, Context cx,
+                                   RegExpImpl regExpImpl)
+    {
+        StringBuffer charBuf = rdata.charBuf;
+        int cp = 0;
+        String da = rdata.repstr;
+        int dp = rdata.dollar;
+        if (dp != -1) {
+            int[] skip = new int[1];
+            do {
+                int len = dp - cp;
+                charBuf.append(da.substring(cp, dp));
+                cp = dp;
+                SubString sub = interpretDollar(cx, regExpImpl, da,
+                                                dp, skip);
+                if (sub != null) {
+                    len = sub.length;
+                    if (len > 0) {
+                        charBuf.append(sub.charArray, sub.index, len);
+                    }
+                    cp += skip[0];
+                    dp += skip[0];
+                } else {
+                    ++dp;
+                }
+                dp = da.indexOf('$', dp);
+            } while (dp >= 0);
+        }
+        int daL = da.length();
+        if (daL > cp) {
+            charBuf.append(da.substring(cp, daL));
+        }
+    }
+
+    String          input;         /* input string to match (perl $_, GC root) */
+    boolean         multiline;     /* whether input contains newlines (perl $*) */
+    SubString[]     parens;        /* Vector of SubString; last set of parens
+                                      matched (perl $1, $2) */
+    SubString       lastMatch;     /* last string matched (perl $&) */
+    SubString       lastParen;     /* last paren matched (perl $+) */
+    SubString       leftContext;   /* input to left of last match (perl $`) */
+    SubString       rightContext;  /* input to right of last match (perl $') */
+}
+
+
+final class GlobData
+{
+    int      mode;      /* input: return index, match object, or void */
+    int      optarg;    /* input: index of optional flags argument */
+    boolean  global;    /* output: whether regexp was global */
+    String   str;       /* output: 'this' parameter object as string */
+    NativeRegExp regexp;/* output: regexp parameter object private data */
+
+    // match-specific data
+
+    Scriptable arrayobj;
+
+    // replace-specific data
+
+    Function      lambda;        /* replacement function object or null */
+    String        repstr;        /* replacement string */
+    int           dollar = -1;   /* -1 or index of first $ in repstr */
+    StringBuffer  charBuf;       /* result characters, null initially */
+    int           leftIndex;     /* leftContext index, always 0 for JS1.2 */
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/SubString.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/SubString.java
new file mode 100644
index 0000000..00905ca
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/regexp/SubString.java
@@ -0,0 +1,75 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.regexp;
+
+class SubString {
+
+    public SubString()
+    {
+    }
+
+    public SubString(String str)
+    {
+        index = 0;
+        charArray = str.toCharArray();
+        length = str.length();
+    }
+
+    public SubString(char[] source, int start, int len)
+    {
+    // there must be a better way of doing this??
+        index = 0;
+        length = len;
+        charArray = new char[len];
+        for (int j = 0; j < len; j++)
+            charArray[j] = source[start + j];
+    }
+
+    public String toString() {
+        return charArray == null
+               ? ""
+               : new String(charArray, index, length);
+    }
+
+    static final SubString emptySubString = new SubString();
+
+    char[] charArray;
+    int    index;
+    int    length;
+}
+
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/resources/Messages.properties b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/resources/Messages.properties
new file mode 100644
index 0000000..fd869c1
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/resources/Messages.properties
@@ -0,0 +1,778 @@
+#
+# Default JavaScript messages file.
+#
+# ***** BEGIN LICENSE BLOCK *****
+# Version: MPL 1.1/GPL 2.0
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+# http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Original Code is Rhino code, released
+# May 6, 1999.
+#
+# The Initial Developer of the Original Code is
+# Netscape Communications Corporation.
+# Portions created by the Initial Developer are Copyright (C) 1997-1999
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#   Norris Boyd
+#   Bob Jervis
+#
+# Alternatively, the contents of this file may be used under the terms of
+# the GNU General Public License Version 2 or later (the "GPL"), in which
+# case the provisions of the GPL are applicable instead of those above. If
+# you wish to allow use of your version of this file only under the terms of
+# the GPL and not to allow others to use your version of this file under the
+# MPL, indicate your decision by deleting the provisions above and replacing
+# them with the notice and other provisions required by the GPL. If you do
+# not delete the provisions above, a recipient may use your version of this
+# file under either the MPL or the GPL.
+#
+# ***** END LICENSE BLOCK *****
+
+# This is replaced during jar assembly from property string
+# and should not be translated
+implementation.version = @IMPLEMENTATION.VERSION@
+
+#
+# To add JavaScript error messages for a particular locale, create a
+# new Messages_[locale].properties file, where [locale] is the Java
+# string abbreviation for that locale.  For example, JavaScript
+# messages for the Polish locale should be located in
+# Messages_pl.properties, and messages for the Italian Swiss locale
+# should be located in Messages_it_CH.properties.  Message properties
+# files should be accessible through the classpath under
+# org.mozilla.javascript.resources
+#
+# See:
+# java.util.ResourceBundle
+# java.text.MessageFormat
+#
+
+# SomeJavaClassWhereUsed
+
+# Codegen
+msg.dup.parms =\
+    Duplicate parameter name "{0}".
+
+msg.too.big.jump =\
+    Program too complex: too big jump offset.
+
+msg.too.big.index =\
+    Program too complex: internal index exceeds 64K limit.
+
+msg.while.compiling.fn =\
+    Encountered code generation error while compiling function "{0}": {1}
+
+msg.while.compiling.script =\
+    Encountered code generation error while compiling script: {0}
+
+# Context
+msg.ctor.not.found =\
+    Constructor for "{0}" not found.
+
+msg.not.ctor =\
+    "{0}" is not a constructor.
+
+# FunctionObject
+msg.varargs.ctor =\
+    Method or constructor "{0}" must be static with the signature \
+    "(Context cx, Object[] args, Function ctorObj, boolean inNewExpr)" \
+    to define a variable arguments constructor.
+
+msg.varargs.fun =\
+    Method "{0}" must be static with the signature \
+    "(Context cx, Scriptable thisObj, Object[] args, Function funObj)" \
+    to define a variable arguments function.
+
+msg.incompat.call =\
+    Method "{0}" called on incompatible object.
+
+msg.bad.parms =\
+    Unsupported parameter type "{0}" in method "{1}".
+
+msg.bad.method.return =\
+    Unsupported return type "{0}" in method "{1}".
+
+msg.bad.ctor.return =\
+    Construction of objects of type "{0}" is not supported.
+
+msg.no.overload =\
+    Method "{0}" occurs multiple times in class "{1}".
+
+msg.method.not.found =\
+    Method "{0}" not found in "{1}".
+
+# IRFactory
+
+msg.bad.for.in.lhs =\
+    Invalid left-hand side of for..in loop.
+
+msg.mult.index =\
+    Only one variable allowed in for..in loop.
+
+msg.bad.for.in.destruct =\
+    Left hand side of for..in loop must be an array of length 2 to accept \
+    key/value pair.
+    
+msg.cant.convert =\
+    Can''t convert to type "{0}".
+
+msg.bad.assign.left =\
+    Invalid assignment left-hand side.
+
+msg.bad.decr =\
+    Invalid decerement operand.
+
+msg.bad.incr =\
+    Invalid increment operand.
+
+msg.bad.yield =\
+    yield must be in a function.
+
+msg.yield.parenthesized =\
+    yield expression must be parenthesized.
+
+# NativeGlobal
+msg.cant.call.indirect =\
+    Function "{0}" must be called directly, and not by way of a \
+    function of another name.
+
+msg.eval.nonstring =\
+    Calling eval() with anything other than a primitive string value will \
+    simply return the value. Is this what you intended?
+
+msg.eval.nonstring.strict =\
+    Calling eval() with anything other than a primitive string value is not \
+    allowed in strict mode.
+
+msg.bad.destruct.op =\
+    Invalid destructuring assignment operator
+
+# NativeCall
+msg.only.from.new =\
+    "{0}" may only be invoked from a "new" expression.
+
+msg.deprec.ctor =\
+    The "{0}" constructor is deprecated.
+
+# NativeFunction
+msg.no.function.ref.found =\
+    no source found to decompile function reference {0}
+
+msg.arg.isnt.array =\
+    second argument to Function.prototype.apply must be an array
+
+# NativeGlobal
+msg.bad.esc.mask =\
+    invalid string escape mask
+
+# NativeJavaClass
+msg.cant.instantiate =\
+    error instantiating ({0}): class {1} is interface or abstract
+
+msg.bad.ctor.sig =\
+    Found constructor with wrong signature: \
+    {0} calling {1} with signature {2}
+
+msg.not.java.obj =\
+    Expected argument to getClass() to be a Java object.
+
+msg.no.java.ctor =\
+    Java constructor for "{0}" with arguments "{1}" not found.
+
+# NativeJavaMethod
+msg.method.ambiguous =\
+    The choice of Java method {0}.{1} matching JavaScript argument types ({2}) is ambiguous; \
+    candidate methods are: {3}
+
+msg.constructor.ambiguous =\
+    The choice of Java constructor {0} matching JavaScript argument types ({1}) is ambiguous; \
+    candidate constructors are: {2}
+
+# NativeJavaObject
+msg.conversion.not.allowed =\
+    Cannot convert {0} to {1}
+
+msg.no.empty.interface.conversion =\
+    Cannot convert {0} to interface {1} with no methods
+
+msg.no.function.interface.conversion =\
+    Cannot convert function {0} to interface since it contains methods with \
+    different signatures
+
+# NativeJavaPackage
+msg.not.classloader =\
+    Constructor for "Packages" expects argument of type java.lang.Classloader
+
+# NativeRegExp
+msg.bad.quant =\
+    Invalid quantifier {0}
+
+msg.overlarge.backref =\
+    Overly large back reference {0}
+
+msg.overlarge.min =\
+    Overly large minimum {0}
+
+msg.overlarge.max =\
+    Overly large maximum {0}
+
+msg.zero.quant =\
+    Zero quantifier {0}
+
+msg.max.lt.min =\
+    Maximum {0} less than minimum
+
+msg.unterm.quant =\
+    Unterminated quantifier {0}
+
+msg.unterm.paren =\
+    Unterminated parenthetical {0}
+
+msg.unterm.class =\
+    Unterminated character class {0}
+
+msg.bad.range =\
+    Invalid range in character class.
+
+msg.trail.backslash =\
+    Trailing \\ in regular expression.
+
+msg.re.unmatched.right.paren =\
+    unmatched ) in regular expression.
+
+msg.no.regexp =\
+    Regular expressions are not available.
+
+msg.bad.backref =\
+    back-reference exceeds number of capturing parentheses.
+
+msg.bad.regexp.compile =\
+    Only one argument may be specified if the first argument to \
+    RegExp.prototype.compile is a RegExp object.
+
+# Parser
+msg.got.syntax.errors = \
+    Compilation produced {0} syntax errors.
+
+msg.var.redecl =\
+    TypeError: redeclaration of var {0}.
+
+msg.const.redecl =\
+    TypeError: redeclaration of const {0}.
+    
+msg.let.redecl =\
+    TypeError: redeclaration of variable {0}.
+    
+msg.parm.redecl =\
+	TypeError: redeclaration of formal parameter {0}.
+
+msg.fn.redecl =\
+    TypeError: redeclaration of function {0}.
+
+# NodeTransformer
+msg.dup.label =\
+    duplicated label
+
+msg.undef.label =\
+    undefined label
+
+msg.bad.break =\
+    unlabelled break must be inside loop or switch
+
+msg.continue.outside =\
+    continue must be inside loop
+
+msg.continue.nonloop =\
+    continue can only use labeles of iteration statements
+
+msg.bad.throw.eol =\
+    Line terminator is not allowed between the throw keyword and throw \
+    expression.
+
+msg.no.paren.parms =\
+    missing ( before function parameters.
+
+msg.no.parm =\
+    missing formal parameter
+
+msg.no.paren.after.parms =\
+    missing ) after formal parameters
+
+msg.no.brace.body =\
+    missing '{' before function body
+
+msg.no.brace.after.body =\
+    missing } after function body
+
+msg.no.paren.cond =\
+    missing ( before condition
+
+msg.no.paren.after.cond =\
+    missing ) after condition
+
+msg.no.semi.stmt =\
+    missing ; before statement
+
+msg.no.name.after.dot =\
+    missing name after . operator
+
+msg.no.name.after.coloncolon =\
+    missing name after :: operator
+
+msg.no.name.after.dotdot =\
+    missing name after .. operator
+
+msg.no.name.after.xmlAttr =\
+    missing name after .@
+
+msg.no.bracket.index =\
+    missing ] in index expression
+
+msg.no.paren.switch =\
+    missing ( before switch expression
+
+msg.no.paren.after.switch =\
+    missing ) after switch expression
+
+msg.no.brace.switch =\
+    missing '{' before switch body
+
+msg.bad.switch =\
+    invalid switch statement
+
+msg.no.colon.case =\
+    missing : after case expression
+
+msg.double.switch.default =\
+    double default label in the switch statement
+
+msg.no.while.do =\
+    missing while after do-loop body
+
+msg.no.paren.for =\
+    missing ( after for
+
+msg.no.semi.for =\
+    missing ; after for-loop initializer
+
+msg.no.semi.for.cond =\
+    missing ; after for-loop condition
+    
+msg.in.after.for.name =\
+    missing in after for
+
+msg.no.paren.for.ctrl =\
+    missing ) after for-loop control
+
+msg.no.paren.with =\
+    missing ( before with-statement object
+
+msg.no.paren.after.with =\
+    missing ) after with-statement object
+
+msg.no.paren.after.let =\
+    missing ( after let
+
+msg.no.paren.let =\
+    missing ) after variable list
+
+msg.no.curly.let =\
+    missing } after let statement
+
+msg.bad.return =\
+    invalid return
+
+msg.no.brace.block =\
+    missing } in compound statement
+
+msg.bad.label =\
+    invalid label
+
+msg.bad.var =\
+    missing variable name
+
+msg.bad.var.init =\
+    invalid variable initialization
+
+msg.no.colon.cond =\
+    missing : in conditional expression
+
+msg.no.paren.arg =\
+    missing ) after argument list
+
+msg.no.bracket.arg =\
+    missing ] after element list
+
+msg.bad.prop =\
+    invalid property id
+
+msg.no.colon.prop =\
+    missing : after property id
+
+msg.no.brace.prop =\
+    missing } after property list
+
+msg.no.paren =\
+    missing ) in parenthetical
+
+msg.reserved.id =\
+    identifier is a reserved word
+
+msg.no.paren.catch =\
+    missing ( before catch-block condition
+
+msg.bad.catchcond =\
+    invalid catch block condition
+
+msg.catch.unreachable =\
+    any catch clauses following an unqualified catch are unreachable
+
+msg.no.brace.try =\
+    missing '{' before try block
+
+msg.no.brace.catchblock =\
+    missing '{' before catch-block body
+
+msg.try.no.catchfinally =\
+    ''try'' without ''catch'' or ''finally''
+
+msg.no.return.value =\
+  function {0} does not always return a value
+
+msg.anon.no.return.value =\
+  anonymous function does not always return a value
+
+msg.return.inconsistent =\
+  return statement is inconsistent with previous usage
+
+msg.generator.returns =\
+  TypeError: generator function {0} returns a value
+
+msg.anon.generator.returns =\
+  TypeError: anonymous generator function returns a value
+
+msg.syntax =\
+    syntax error
+
+msg.unexpected.eof =\
+    Unexpected end of file
+
+msg.XML.bad.form =\
+    illegally formed XML syntax
+
+msg.XML.not.available =\
+    XML runtime not available
+
+msg.too.deep.parser.recursion =\
+    Too deep recursion while parsing
+
+msg.no.side.effects =\
+    Code has no side effects
+
+msg.extra.trailing.comma =\
+    Trailing comma is not legal in an ECMA-262 object initializer
+
+msg.equal.as.assign =\
+    Test for equality (==) mistyped as assignment (=)?
+
+msg.var.hides.arg =\
+    Variable {0} hides argument
+
+msg.destruct.assign.no.init =\
+    Missing = in destructuring declaration
+
+# ScriptRuntime
+msg.no.properties =\
+    {0} has no properties.
+
+msg.invalid.iterator =\
+    Invalid iterator value
+
+msg.iterator.primitive =\
+    __iterator__ returned a primitive value
+
+msg.assn.create.strict =\
+    Assignment to undeclared variable {0}
+
+msg.ref.undefined.prop =\
+    Reference to undefined property "{0}"
+
+msg.prop.not.found =\
+    Property {0} not found.
+
+msg.invalid.type =\
+    Invalid JavaScript value of type {0}
+
+msg.primitive.expected =\
+    Primitive type expected (had {0} instead)
+
+msg.namespace.expected =\
+    Namespace object expected to left of :: (found {0} instead)
+
+msg.null.to.object =\
+    Cannot convert null to an object.
+
+msg.undef.to.object =\
+    Cannot convert undefined to an object.
+
+msg.cyclic.value =\
+    Cyclic {0} value not allowed.
+
+msg.is.not.defined =\
+    "{0}" is not defined.
+
+msg.undef.prop.read =\
+    Cannot read property "{1}" from {0}
+
+msg.undef.prop.write =\
+    Cannot set property "{1}" of {0} to "{2}"
+
+msg.undef.prop.delete =\
+    Cannot delete property "{1}" of {0}
+
+msg.undef.method.call =\
+    Cannot call method "{1}" of {0}
+
+msg.undef.with =\
+    Cannot apply "with" to {0}
+
+msg.isnt.function =\
+    {0} is not a function, it is {1}.
+
+msg.isnt.function.in =\
+    Cannot call property {0} in object {1}. It is not a function, it is "{2}".
+
+msg.function.not.found =\
+    Cannot find function {0}.
+
+msg.function.not.found.in =\
+    Cannot find function {0} in object {1}.
+
+msg.isnt.xml.object =\
+    {0} is not an xml object.
+
+msg.no.ref.to.get =\
+    {0} is not a reference to read reference value.
+
+msg.no.ref.to.set =\
+    {0} is not a reference to set reference value to {1}.
+
+msg.no.ref.from.function =\
+    Function {0} can not be used as the left-hand side of assignment \
+    or as an operand of ++ or -- operator.
+
+msg.bad.default.value =\
+    Object''s getDefaultValue() method returned an object.
+
+msg.instanceof.not.object = \
+    Can''t use instanceof on a non-object.
+
+msg.instanceof.bad.prototype = \
+    ''prototype'' property of {0} is not an object.
+
+msg.bad.radix = \
+    illegal radix {0}.
+
+# ScriptableObject
+msg.default.value =\
+    Cannot find default value for object.
+
+msg.zero.arg.ctor =\
+    Cannot load class "{0}" which has no zero-parameter constructor.
+
+msg.ctor.multiple.parms =\
+    Can''t define constructor or class {0} since more than one \
+    constructor has multiple parameters.
+
+msg.extend.scriptable =\
+    {0} must extend ScriptableObject in order to define property {1}.
+
+msg.bad.getter.parms =\
+    In order to define a property, getter {0} must have zero parameters \
+    or a single ScriptableObject parameter.
+
+msg.obj.getter.parms =\
+    Expected static or delegated getter {0} to take a ScriptableObject parameter.
+
+msg.getter.static =\
+    Getter and setter must both be static or neither be static.
+
+msg.setter.return =\
+    Setter must have void return type: {0}
+
+msg.setter2.parms =\
+    Two-parameter setter must take a ScriptableObject as its first parameter.
+
+msg.setter1.parms =\
+    Expected single parameter setter for {0}
+
+msg.setter2.expected =\
+    Expected static or delegated setter {0} to take two parameters.
+
+msg.setter.parms =\
+    Expected either one or two parameters for setter.
+
+msg.setter.bad.type =\
+    Unsupported parameter type "{0}" in setter "{1}".
+
+msg.add.sealed =\
+    Cannot add a property to a sealed object: {0}.
+
+msg.remove.sealed =\
+    Cannot remove a property from a sealed object: {0}.
+
+msg.modify.sealed =\
+    Cannot modify a property of a sealed object: {0}.
+
+msg.modify.readonly =\
+    Cannot modify readonly property: {0}.
+
+# TokenStream
+msg.missing.exponent =\
+    missing exponent
+
+msg.caught.nfe =\
+    number format error
+
+msg.unterminated.string.lit =\
+    unterminated string literal
+
+msg.unterminated.mstring.appjet =\
+    unterminated multi-line string literal
+    
+msg.unterminated.comment =\
+    unterminated comment
+
+msg.unterminated.re.lit =\
+    unterminated regular expression literal
+
+msg.invalid.re.flag =\
+    invalid flag after regular expression
+
+msg.no.re.input.for =\
+    no input for {0}
+
+msg.illegal.character =\
+    illegal character
+
+msg.illegal.character.appjet =\
+    illegal character: {0}
+    
+msg.invalid.escape =\
+    invalid Unicode escape sequence
+
+msg.bad.namespace =\
+    not a valid default namespace statement. \
+    Syntax is: default xml namespace = EXPRESSION;
+
+# TokensStream warnings
+msg.bad.octal.literal =\
+    illegal octal literal digit {0}; interpreting it as a decimal digit
+
+msg.reserved.keyword =\
+    illegal usage of future reserved keyword {0}; interpreting it as ordinary identifier
+
+# LiveConnect errors
+msg.java.internal.field.type =\
+    Internal error: type conversion of {0} to assign to {1} on {2} failed.
+
+msg.java.conversion.implicit_method =\
+    Can''t find converter method "{0}" on class {1}.
+
+msg.java.method.assign =\
+    Java method "{0}" cannot be assigned to.
+
+msg.java.internal.private =\
+    Internal error: attempt to access private/protected field "{0}".
+
+msg.java.no_such_method =\
+    Can''t find method {0}.
+
+msg.script.is.not.constructor =\
+    Script objects are not constructors.
+
+msg.nonjava.method =\
+    Java method "{0}" was invoked with {1} as "this" value that can not be converted to Java type {2}.
+
+msg.java.member.not.found =\
+    Java class "{0}" has no public instance field or method named "{1}".
+
+msg.java.array.index.out.of.bounds =\
+    Array index {0} is out of bounds [0..{1}].
+
+msg.java.array.member.not.found =\
+    Java arrays have no public instance fields or methods named "{0}".
+
+msg.pkg.int =\
+    Java package names may not be numbers.
+
+msg.access.prohibited =\
+    Access to Java class "{0}" is prohibited.
+
+# ImporterTopLevel
+msg.ambig.import =\
+    Ambiguous import: "{0}" and and "{1}".
+
+msg.not.pkg =\
+    Function importPackage must be called with a package; had "{0}" instead.
+
+msg.not.class =\
+    Function importClass must be called with a class; had "{0}" instead.
+
+msg.not.class.not.pkg =\
+    "{0}" is neither a class nor a package.
+
+msg.prop.defined =\
+    Cannot import "{0}" since a property by that name is already defined.
+
+#JavaAdapter
+msg.adapter.zero.args =\
+    JavaAdapter requires at least one argument.
+
+msg.not.java.class.arg = \
+Argument {0} is not Java class: {1}.
+
+#JavaAdapter
+msg.only.one.super = \
+Only one class may be extended by a JavaAdapter. Had {0} and {1}.
+
+
+# Arrays
+msg.arraylength.bad =\
+    Inappropriate array length.
+
+# Arrays
+msg.arraylength.too.big =\
+    Array length {0} exceeds supported capacity limit.
+
+# URI
+msg.bad.uri =\
+    Malformed URI sequence.
+
+# Number
+msg.bad.precision =\
+    Precision {0} out of range.
+
+# NativeGenerator
+msg.send.newborn =\
+  Attempt to send value to newborn generator
+
+msg.already.exec.gen =\
+    Already executing generator
+    
+msg.StopIteration.invalid =\
+    StopIteration may not be changed to an arbitrary object.
+
+# Interpreter
+msg.yield.closing =\
+  Yield from closing generator
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/resources/Messages_fr.properties b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/resources/Messages_fr.properties
new file mode 100644
index 0000000..fc87c97
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/resources/Messages_fr.properties
@@ -0,0 +1,329 @@
+#
+# French JavaScript messages file.
+#
+# ***** BEGIN LICENSE BLOCK *****
+# Version: MPL 1.1/GPL 2.0
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+# http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Original Code is Aviva Inc. code, released
+# March 5, 2004.
+#
+# The Initial Developer of the Original Code is
+# Aviva Inc.
+# Portions created by the Initial Developer are Copyright (C) 2004
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#   Eugene Aresteanu
+#
+# Alternatively, the contents of this file may be used under the terms of
+# the GNU General Public License Version 2 or later (the "GPL"), in which
+# case the provisions of the GPL are applicable instead of those above. If
+# you wish to allow use of your version of this file only under the terms of
+# the GPL and not to allow others to use your version of this file under the
+# MPL, indicate your decision by deleting the provisions above and replacing
+# them with the notice and other provisions required by the GPL. If you do
+# not delete the provisions above, a recipient may use your version of this
+# file under either the MPL or the GPL.
+#
+# ***** END LICENSE BLOCK *****
+
+msg.dup.parms =\
+ Le nom de param\u00E8tre "{0}" existe d\u00E9j\u00E0.
+msg.too.big.jump =\
+ Programme trop complexe : d\u00E9calage de saut trop important
+msg.too.big.index =\
+ Programme trop complexe : l''indice interne d\u00E9passe la limite de 64 ko
+msg.ctor.not.found =\
+ Le constructeur de "{0}" est introuvable
+msg.not.ctor =\
+ {0} n''est pas un constructeur
+msg.varargs.ctor =\
+ La m\u00E9thode ou le constructeur "{0}" doit \u00EAtre statique avec la signature "(Context cx, arguments Object[], Function ctorObj, boolean inNewExpr)" pour d\u00E9finir un constructeur d''arguments de variable.
+msg.varargs.fun =\
+ La m\u00E9thode "{0}" doit \u00EAtre statique avec la signature "(Context cx, Scriptable thisObj, arguments Object[], Function funObj)" pour d\u00E9finir une fonction d''arguments de variable
+msg.incompat.call =\
+ La m\u00E9thode "{0}" a \u00E9t\u00E9 appel\u00E9e dans un objet non compatible
+msg.bad.parms =\
+ Les param\u00E8tres de la m\u00E9thode sont incorrects pour "{0}"
+msg.no.overload =\
+ La m\u00E9thode "{0}" appara\u00EEt plusieurs fois dans la classe "{1}"
+msg.method.not.found =\
+ La m\u00E9thode "{0}" est introuvable dans "{1}"
+msg.bad.for.in.lhs =\
+ La partie gauche de la boucle for..in est incorrecte
+msg.bad.lhs.assign =\
+ La partie gauche de l''affectation est incorrecte
+msg.mult.index =\
+ Une seule variable est autoris\u00E9e dans la boucle for..in
+msg.cant.convert =\
+ La conversion en type "{0}" est impossible
+msg.cant.call.indirect =\
+ La fonction "{0}" doit \u00EAtre appel\u00E9e directement et non par l''interm\u00E9diaire d''une fonction portant un autre nom
+msg.eval.nonstring =\
+ Si vous appelez la fonction eval() avec une valeur qui n''appartient pas \u00E0 une cha\u00EEne primitive, c''est la valeur en question qui est renvoy\u00E9e. \u00E9tait-ce votre intention ?
+msg.only.from.new =\
+ {0} ne peut \u00EAtre appel\u00E9e qu''\u00E0 partir d''une "nouvelle" expression.
+msg.deprec.ctor =\
+ Le constructeur "{0}" est d\u00E9conseill\u00E9
+msg.no.function.ref.found =\
+ aucune source n''a \u00E9t\u00E9 trouv\u00E9e pour d\u00E9compiler la r\u00E9f\u00E9rence de fonction {0}
+msg.arg.isnt.array =\
+ le second argument de la m\u00E9thode Function.prototype.apply doit \u00EAtre un tableau
+msg.bad.esc.mask =\
+ le masque d''\u00E9chappement de cha\u00EEne est incorrect
+msg.cant.instantiate =\
+ erreur lors de l''instanciation ({0}) : la classe {1} est une classe interface ou abstract
+msg.bad.ctor.sig =\
+ Un constructeur avec une signature incorrecte a \u00E9t\u00E9 d\u00E9tect\u00E9 : {0} qui appelle {1} avec la signature {2}
+msg.not.java.obj =\
+ L''argument attendu pour la fonction getClass() doit \u00EAtre un objet Java
+msg.no.java.ctor =\
+ Le constructeur Java de "{0}" avec les arguments "{1}" est introuvable
+msg.method.ambiguous =\
+ Le choix de la m\u00E9thode Java {0}.{1} correspondant aux types d''argument JavaScript ({2}) est ambigu. Les m\u00E9thodes propos\u00E9es sont les suivantes : {3}
+msg.constructor.ambiguous =\
+ Le choix du constructeur Java {0} correspondant aux types d''argument JavaScript ({1}) est ambigu. Les constructeurs propos\u00E9s sont les suivants : {2}
+msg.conversion.not.allowed =\
+ Impossible de convertir {0} en {1}
+msg.not.classloader =\
+ Le constructeur de "Packages" attend un argument de type java.lang.Classloader
+msg.bad.quant =\
+ Le quantificateur {0} est incorrect
+msg.overlarge.max =\
+ Le maximum {0} est trop important
+msg.zero.quant =\
+ Le quantificateur {0} est nul
+msg.max.lt.min =\
+ Le maximum {0} est inf\u00E9rieur au minimum
+msg.unterm.quant =\
+ Le quantificateur {0} n''a pas de limite
+msg.unterm.paren =\
+ Les parenth\u00E8ses {0} n''ont pas de limite
+msg.unterm.class =\
+ La classe de caract\u00E8res {0} n''a pas de limite
+msg.bad.range =\
+ La classe de caract\u00E8res contient une plage de valeurs incorrecte
+msg.trail.backslash =\
+ \\ au d\u00E9but d''une expression r\u00E9guli\u00E8re
+msg.no.regexp =\
+ Les expressions r\u00E9guli\u00E8res ne sont pas disponibles
+msg.bad.backref =\
+ la r\u00E9f\u00E9rence ant\u00E9rieure d\u00E9passe le nombre de parenth\u00E8ses de capture
+msg.dup.label =\
+ Le libell\u00E9 {0} existe d\u00E9j\u00E0
+msg.undef.label =\
+ Le libell\u00E9 {0} n''est pas d\u00E9fini
+msg.bad.break =\
+ Le saut non libell\u00E9 doit se trouver dans la boucle ou dans l''aiguillage
+msg.continue.outside =\
+ continue doit se trouver dans la boucle
+msg.continue.nonloop =\
+ Il n''est possible de continuer que dans l''instruction d''it\u00E9ration libell\u00E9e
+msg.fn.redecl =\
+ La fonction "{0}" a \u00E9t\u00E9 de nouveau d\u00E9clar\u00E9e. La d\u00E9finition pr\u00E9c\u00E9dente sera ignor\u00E9e
+msg.no.paren.parms =\
+ il manque ''('' avant les param\u00E8tres de la fonction
+msg.no.parm =\
+ il manque un param\u00E8tre de forme
+msg.no.paren.after.parms =\
+ il manque '')'' apr\u00E8s les param\u00E8tres de forme
+msg.no.brace.body =\
+ il manque '{' avant le corps d''une fonction
+msg.no.brace.after.body =\
+ il manque ''}'' apr\u00E8s le corps d''une fonction
+msg.no.paren.cond =\
+ il manque ''('' avant une condition
+msg.no.paren.after.cond =\
+ il manque '')'' apr\u00E8s une condition
+msg.no.semi.stmt =\
+ il manque '';'' avant une instruction
+msg.no.name.after.dot =\
+ il manque un nom apr\u00E8s un op\u00E9rateur ''.''
+msg.no.bracket.index =\
+ il manque '']'' dans l''expression de l''indice
+msg.no.paren.switch =\
+ il manque ''('' avant l''expression d''un aiguillage
+msg.no.paren.after.switch =\
+ il manque '')'' apr\u00E8s l''expression d''un aiguillage
+msg.no.brace.switch =\
+ il manque '{' avant le corps d''un aiguillage
+msg.bad.switch =\
+ l''instruction d''aiguillage est incorrecte
+msg.no.colon.case =\
+ il manque '':'' apr\u00E8s l''expression d''un cas
+msg.no.while.do =\
+ il manque ''while'' apr\u00E8s le corps d''une boucle do-loop
+msg.no.paren.for =\
+ il manque ''('' apr\u00E8s for
+msg.no.semi.for =\
+ Il manque '';'' apr\u00E8s l''initialiseur for-loop
+msg.no.semi.for.cond =\
+ il manque '';'' apr\u00E8s la condition for-loop
+msg.no.paren.for.ctrl =\
+ il manque '')'' apr\u00E8s le contrôle for-loop
+msg.no.paren.with =\
+ il manque ''('' avant un objet with-statement
+msg.no.paren.after.with =\
+ il manque '')'' apr\u00E8s un objet with-statement
+msg.bad.return =\
+ la valeur renvoy\u00E9e est incorrecte
+msg.no.brace.block =\
+ il manque ''}'' dans une instruction compos\u00E9e
+msg.bad.label =\
+ le libell\u00E9 est incorrect
+msg.bad.var =\
+ il manque un nom de variable
+msg.bad.var.init =\
+ l''initialisation de la variable est incorrecte
+msg.no.colon.cond =\
+ il manque '':'' dans une expression conditionnelle
+msg.no.paren.arg =\
+ il manque '')'' apr\u00E8s une liste d''arguments
+msg.no.bracket.arg =\
+ il manque '']'' apr\u00E8s une liste d''\u00E9l\u00E9ments
+msg.bad.prop =\
+ l''identifiant de propri\u00E9t\u00E9 est incorrect
+msg.no.colon.prop =\
+ il manque '':'' apr\u00E8s un identifiant de propri\u00E9t\u00E9
+msg.no.brace.prop =\
+ il manque ''}'' apr\u00E8s une liste de propri\u00E9t\u00E9s
+msg.no.paren =\
+ il manque '')'' dans des parenth\u00E8ses
+msg.reserved.id =\
+ l''identifiant est un mot r\u00E9serv\u00E9
+msg.no.paren.catch =\
+ il manque ''('' avant une condition catch-block
+msg.bad.catchcond =\
+ la condition catch-block est incorrecte
+msg.catch.unreachable =\
+ aucune clause catch suivant une interception non qualifi\u00E9e ne peut \u00EAtre atteinte
+msg.no.brace.catchblock =\
+ il manque '{' avant le corps catch-block
+msg.try.no.catchfinally =\
+ ''try'' a \u00E9t\u00E9 d\u00E9tect\u00E9 sans ''catch'' ni ''finally''
+msg.syntax =\
+ erreur de syntaxe
+msg.assn.create =\
+ Une variable va \u00EAtre cr\u00E9\u00E9e en raison de l''affectation \u00E0 un ''{0}'' non d\u00E9fini. Ajoutez une instruction de variable \u00E0 la port\u00E9e sup\u00E9rieure pour que cet avertissement ne soit plus affich\u00E9
+msg.prop.not.found =\
+ La propri\u00E9t\u00E9 est introuvable
+msg.invalid.type =\
+ Valeur JavaScript de type {0} incorrecte
+msg.primitive.expected =\
+ Un type primitif \u00E9tait attendu (et non {0})
+msg.null.to.object =\
+ Il est impossible de convertir la valeur null en objet
+msg.undef.to.object =\
+ Il est impossible de convertir une valeur non d\u00E9finie en objet
+msg.cyclic.value =\
+ La valeur cyclique {0} n''est pas autoris\u00E9e
+msg.is.not.defined =\
+ "{0}" n''est pas d\u00E9fini
+msg.isnt.function =\
+ {0} n''est pas une fonction, est un {1}
+msg.bad.default.value =\
+ La m\u00E9thode getDefaultValue() de l''objet a renvoy\u00E9 un objet
+msg.instanceof.not.object =\
+ Il est impossible d''utiliser une instance d''un \u00E9l\u00E9ment autre qu''un objet
+msg.instanceof.bad.prototype =\
+ La propri\u00E9t\u00E9 ''prototype'' de {0} n''est pas un objet
+msg.bad.radix =\
+ la base {0} n''est pas autoris\u00E9e
+msg.default.value =\
+ La valeur par d\u00E9faut de l''objet est introuvable
+msg.zero.arg.ctor =\
+ Il est impossible de charger la classe "{0}", qui ne poss\u00E8de pas de constructeur de param\u00E8tre z\u00E9ro
+msg.multiple.ctors =\
+ Les m\u00E9thodes {0} et {1} ont \u00E9t\u00E9 d\u00E9tect\u00E9es alors qu''il est impossible d''utiliser plusieurs m\u00E9thodes constructor
+msg.ctor.multiple.parms =\
+ Il est impossible de d\u00E9finir le constructeur ou la classe {0} car plusieurs constructeurs poss\u00E8dent plusieurs param\u00E8tres
+msg.extend.scriptable =\
+ {0} doit \u00E9tendre ScriptableObject afin de d\u00E9finir la propri\u00E9t\u00E9 {1}
+msg.bad.getter.parms =\
+ Pour d\u00E9finir une propri\u00E9t\u00E9, la m\u00E9thode d''obtention {0} doit avoir des param\u00E8tres z\u00E9ro ou un seul param\u00E8tre ScriptableObject
+msg.obj.getter.parms =\
+ La m\u00E9thode d''obtention statique ou d\u00E9l\u00E9gu\u00E9e {0} doit utiliser un param\u00E8tre ScriptableObject
+msg.getter.static =\
+ La m\u00E9thode d''obtention et la m\u00E9thode de d\u00E9finition doivent toutes deux avoir le m\u00EAme \u00E9tat (statique ou non)
+msg.setter2.parms =\
+ La m\u00E9thode de d\u00E9finition \u00E0 deux param\u00E8tres doit utiliser un param\u00E8tre ScriptableObject comme premier param\u00E8tre
+msg.setter1.parms =\
+ Une m\u00E9thode d''obtention \u00E0 param\u00E8tre unique est attendue pour {0}
+msg.setter2.expected =\
+ La m\u00E9thode de d\u00E9finition statique ou d\u00E9l\u00E9gu\u00E9e {0} doit utiliser deux param\u00E8tres
+msg.setter.parms =\
+ Un ou deux param\u00E8tres sont attendus pour la m\u00E9thode de d\u00E9finition
+msg.add.sealed =\
+ Il est impossible d''ajouter une propri\u00E9t\u00E9 \u00E0 un objet ferm\u00E9
+msg.remove.sealed =\
+ Il est impossible de supprimer une propri\u00E9t\u00E9 d''un objet ferm\u00E9
+msg.token.replaces.pushback =\
+ le jeton de non-obtention {0} remplace le jeton de renvoi {1}
+msg.missing.exponent =\
+ il manque un exposant
+msg.caught.nfe =\
+ erreur de format de nombre : {0}
+msg.unterminated.string.lit =\
+ le litt\u00E9ral de la cha\u00EEne n''a pas de limite
+msg.unterminated.comment =\
+ le commentaire n''a pas de limite
+msg.unterminated.re.lit =\
+ le litt\u00E9ral de l''expression r\u00E9guli\u00E8re n''a pas de limite
+msg.invalid.re.flag =\
+ une expression r\u00E9guli\u00E8re est suivie d''un indicateur incorrect
+msg.no.re.input.for =\
+ il n''y a pas d''entr\u00E9e pour {0}
+msg.illegal.character =\
+ caract\u00E8re non autoris\u00E9
+msg.invalid.escape =\
+ la s\u00E9quence d''\u00E9chappement Unicode est incorrecte
+msg.bad.octal.literal =\
+ le chiffre octal du litt\u00E9ral, {0}, n''est pas autoris\u00E9 et sera interpr\u00E9t\u00E9 comme un chiffre d\u00E9cimal
+msg.reserved.keyword =\
+ l''utilisation du futur mot-cl\u00E9 r\u00E9serv\u00E9 {0} n''est pas autoris\u00E9e et celui-ci sera interpr\u00E9t\u00E9 comme un identifiant ordinaire
+msg.undefined =\
+ La valeur non d\u00E9finie ne poss\u00E8de pas de propri\u00E9t\u00E9
+msg.java.internal.field.type =\
+ Erreur interne : la conversion de type de {0} afin d''affecter {1} \u00E0 {2} a \u00E9chou\u00E9
+msg.java.conversion.implicit_method =\
+ La m\u00E9thode de conversion "{0}" est introuvable dans la classe {1}
+sg.java.method.assign =\
+ La m\u00E9thode Java "{0}" ne peut pas \u00EAtre affect\u00E9e \u00E0
+msg.java.internal.private =\
+ Erreur interne : une tentative d''acc\u00E9der \u00E0 un champ "{0}" priv\u00E9/prot\u00E9g\u00E9 a \u00E9t\u00E9 d\u00E9tect\u00E9e
+msg.java.no_such_method =\
+ La m\u00E9thode ''{0}'' est introuvable
+msg.script.is.not.constructor =\
+ Les objets Script ne sont pas des constructeurs
+msg.nonjava.method =\
+ La m\u00E9thode Java "{0}" a \u00E9t\u00E9 appel\u00E9e avec une valeur ''this'' qui n''est pas un objet Java
+msg.java.member.not.found =\
+ La classe Java "{0}" ne poss\u00E8de aucun champ ou aucune m\u00E9thode d''instance publique appel\u00E9 "{1}"
+msg.java.array.index.out.of.bounds =\
+    Array index {0} is out of bounds [0..{1}].
+msg.pkg.int =\
+ Les noms de package Java ne peuvent pas \u00EAtre des nombres
+msg.ambig.import =\
+ Importation ambigu\u00EB : "{0}" et "{1}"
+msg.not.pkg =\
+ La fonction importPackage doit \u00EAtre appel\u00E9e avec un package et non avec "{0}"
+msg.not.class =\
+ La fonction importClass doit \u00EAtre appel\u00E9e avec une classe et non avec "{0}"
+msg.prop.defined =\
+ Il est impossible d''importer "{0}" car une propri\u00E9t\u00E9 portant le m\u00EAme nom a d\u00E9j\u00E0 \u00E9t\u00E9 d\u00E9finie
+sg.arraylength.bad =\
+ La longueur du tableau n''est pas appropri\u00E9e
+msg.bad.uri =\
+ La s\u00E9quence URI n''est pas form\u00E9e correctement
+msg.bad.precision =\
+ La pr\u00E9cision {0} ne se trouve pas dans la plage de valeurs
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java
new file mode 100644
index 0000000..476ff69
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java
@@ -0,0 +1,112 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino serialization code, released
+ * Sept. 25, 2001.
+ *
+ * The Initial Developer of the Original Code is
+ * Norris Boyd.
+ * Portions created by the Initial Developer are Copyright (C) 2001
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Attila Szegedi
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// API class
+
+package org.mozilla.javascript.serialize;
+
+import java.io.*;
+
+import org.mozilla.javascript.*;
+
+/**
+ * Class ScriptableInputStream is used to read in a JavaScript
+ * object or function previously serialized with a ScriptableOutputStream.
+ * References to names in the exclusion list
+ * replaced with references to the top-level scope specified during
+ * creation of the ScriptableInputStream.
+ *
+ * @author Norris Boyd
+ */
+
+public class ScriptableInputStream extends ObjectInputStream {
+
+    /**
+     * Create a ScriptableInputStream.
+     * @param in the InputStream to read from.
+     * @param scope the top-level scope to create the object in.
+     */
+    public ScriptableInputStream(InputStream in, Scriptable scope)
+        throws IOException
+    {
+        super(in);
+        this.scope = scope;
+        enableResolveObject(true);
+        Context cx = Context.getCurrentContext();
+        if (cx != null) {
+            this.classLoader = cx.getApplicationClassLoader();
+        }
+    }
+
+    protected Class resolveClass(ObjectStreamClass desc)
+        throws IOException, ClassNotFoundException
+    {
+        String name = desc.getName();
+        if (classLoader != null) {
+            try {
+                return classLoader.loadClass(name);
+            } catch (ClassNotFoundException ex) {
+                // fall through to default loading
+            }
+        }
+        return super.resolveClass(desc);
+    }
+
+    protected Object resolveObject(Object obj)
+        throws IOException
+    {
+        if (obj instanceof ScriptableOutputStream.PendingLookup) {
+            String name = ((ScriptableOutputStream.PendingLookup)obj).getName();
+            obj = ScriptableOutputStream.lookupQualifiedName(scope, name);
+            if (obj == Scriptable.NOT_FOUND) {
+                throw new IOException("Object " + name + " not found upon " +
+                                      "deserialization.");
+            }
+        }else if (obj instanceof UniqueTag) {
+            obj = ((UniqueTag)obj).readResolve();
+        }else if (obj instanceof Undefined) {
+            obj = ((Undefined)obj).readResolve();
+        }
+        return obj;
+    }
+
+    private Scriptable scope;
+    private ClassLoader classLoader;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableOutputStream.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableOutputStream.java
new file mode 100644
index 0000000..5ba0d74
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableOutputStream.java
@@ -0,0 +1,207 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino serialization code, released
+ * Sept. 25, 2001.
+ *
+ * The Initial Developer of the Original Code is
+ * Norris Boyd.
+ * Portions created by the Initial Developer are Copyright (C) 2001
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Attila Szegedi
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.serialize;
+
+import java.util.Hashtable;
+import java.util.StringTokenizer;
+import java.io.*;
+
+import org.mozilla.javascript.*;
+
+/**
+ * Class ScriptableOutputStream is an ObjectOutputStream used
+ * to serialize JavaScript objects and functions. Note that
+ * compiled functions currently cannot be serialized, only
+ * interpreted functions. The top-level scope containing the
+ * object is not written out, but is instead replaced with
+ * another top-level object when the ScriptableInputStream
+ * reads in this object. Also, object corresponding to names
+ * added to the exclude list are not written out but instead
+ * are looked up during deserialization. This approach avoids
+ * the creation of duplicate copies of standard objects
+ * during deserialization.
+ *
+ * @author Norris Boyd
+ */
+
+// API class
+
+public class ScriptableOutputStream extends ObjectOutputStream {
+
+    /**
+     * ScriptableOutputStream constructor.
+     * Creates a ScriptableOutputStream for use in serializing
+     * JavaScript objects. Calls excludeStandardObjectNames.
+     *
+     * @param out the OutputStream to write to.
+     * @param scope the scope containing the object.
+     */
+    public ScriptableOutputStream(OutputStream out, Scriptable scope)
+        throws IOException
+    {
+        super(out);
+        this.scope = scope;
+        table = new Hashtable(31);
+        table.put(scope, "");
+        enableReplaceObject(true);
+        excludeStandardObjectNames();
+    }
+
+    /**
+     * Adds a qualified name to the list of object to be excluded from
+     * serialization. Names excluded from serialization are looked up
+     * in the new scope and replaced upon deserialization.
+     * @param name a fully qualified name (of the form "a.b.c", where
+     *             "a" must be a property of the top-level object). The object
+     *             need not exist, in which case the name is ignored.
+     * @throws IllegalArgumentException if the object is not a
+     *         {@link Scriptable}.
+     */
+    public void addOptionalExcludedName(String name) {
+        Object obj = lookupQualifiedName(scope, name);
+        if(obj != null && obj != UniqueTag.NOT_FOUND) {
+            if (!(obj instanceof Scriptable)) {
+                throw new IllegalArgumentException(
+                        "Object for excluded name " + name + 
+                        " is not a Scriptable, it is " + 
+                        obj.getClass().getName());
+            }
+            table.put(obj, name);
+        }
+    }
+
+    /**
+     * Adds a qualified name to the list of object to be excluded from
+     * serialization. Names excluded from serialization are looked up
+     * in the new scope and replaced upon deserialization.
+     * @param name a fully qualified name (of the form "a.b.c", where
+     *             "a" must be a property of the top-level object)
+     * @throws IllegalArgumentException if the object is not found or is not
+     *         a {@link Scriptable}.
+     */
+    public void addExcludedName(String name) {
+        Object obj = lookupQualifiedName(scope, name);
+        if (!(obj instanceof Scriptable)) {
+            throw new IllegalArgumentException("Object for excluded name " +
+                                               name + " not found.");
+        }
+        table.put(obj, name);
+    }
+
+    /**
+     * Returns true if the name is excluded from serialization.
+     */
+    public boolean hasExcludedName(String name) {
+        return table.get(name) != null;
+    }
+
+    /**
+     * Removes a name from the list of names to exclude.
+     */
+    public void removeExcludedName(String name) {
+        table.remove(name);
+    }
+
+    /**
+     * Adds the names of the standard objects and their
+     * prototypes to the list of excluded names.
+     */
+    public void excludeStandardObjectNames() {
+        String[] names = { "Object", "Object.prototype",
+                           "Function", "Function.prototype",
+                           "String", "String.prototype",
+                           "Math",  // no Math.prototype
+                           "Array", "Array.prototype",
+                           "Error", "Error.prototype",
+                           "Number", "Number.prototype",
+                           "Date", "Date.prototype",
+                           "RegExp", "RegExp.prototype",
+                           "Script", "Script.prototype",
+                           "Continuation", "Continuation.prototype",
+                         };
+        for (int i=0; i < names.length; i++) {
+            addExcludedName(names[i]);
+        }
+        
+        String[] optionalNames = { 
+                "XML", "XML.prototype",
+                "XMLList", "XMLList.prototype",
+        };
+        for (int i=0; i < optionalNames.length; i++) {
+            addOptionalExcludedName(optionalNames[i]);
+        }
+    }
+
+    static Object lookupQualifiedName(Scriptable scope,
+                                      String qualifiedName)
+    {
+        StringTokenizer st = new StringTokenizer(qualifiedName, ".");
+        Object result = scope;
+        while (st.hasMoreTokens()) {
+            String s = st.nextToken();
+            result = ScriptableObject.getProperty((Scriptable)result, s);
+            if (result == null || !(result instanceof Scriptable))
+                break;
+        }
+        return result;
+    }
+
+    static class PendingLookup implements Serializable
+    {
+        static final long serialVersionUID = -2692990309789917727L;
+
+        PendingLookup(String name) { this.name = name; }
+
+        String getName() { return name; }
+
+        private String name;
+    }
+
+    protected Object replaceObject(Object obj) throws IOException
+    {
+        String name = (String) table.get(obj);
+        if (name == null)
+            return obj;
+        return new PendingLookup(name);
+    }
+
+    private Scriptable scope;
+    private Hashtable table;
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/xml/XMLLib.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/xml/XMLLib.java
new file mode 100644
index 0000000..da57ddf
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/xml/XMLLib.java
@@ -0,0 +1,132 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.xml;
+
+import org.mozilla.javascript.*;
+
+public abstract class XMLLib
+{
+    private static final Object XML_LIB_KEY = new Object();
+	
+	/**
+		An object which specifies an XMLLib implementation to be used at runtime.
+	 
+		This interface should be considered experimental.  It may be better
+		(and certainly more flexible) to write an interface that returns an
+		XMLLib object rather than a class name, for example.  But that would
+		cause many more ripple effects in the code, all the way back to
+		{@link ScriptRuntime}.
+	 */
+	public static abstract class Factory {
+		public static Factory create(final String className) {
+			return new Factory() {
+				public String getImplementationClassName() {
+					return className;
+				}
+			};
+		}
+		
+		public abstract String getImplementationClassName();
+	}
+
+    public static XMLLib extractFromScopeOrNull(Scriptable scope)
+    {
+        ScriptableObject so = ScriptRuntime.getLibraryScopeOrNull(scope);
+        if (so == null) {
+            // If library is not yet initialized, return null
+            return null;
+        }
+
+        // Ensure lazily initialization of real XML library instance
+        // which is done on first access to XML property
+        ScriptableObject.getProperty(so, "XML");
+
+        return (XMLLib)so.getAssociatedValue(XML_LIB_KEY);
+    }
+
+    public static XMLLib extractFromScope(Scriptable scope)
+    {
+        XMLLib lib = extractFromScopeOrNull(scope);
+        if (lib != null) {
+            return lib;
+        }
+        String msg = ScriptRuntime.getMessage0("msg.XML.not.available");
+        throw Context.reportRuntimeError(msg);
+    }
+
+    protected final XMLLib bindToScope(Scriptable scope)
+    {
+        ScriptableObject so = ScriptRuntime.getLibraryScopeOrNull(scope);
+        if (so == null) {
+            // standard library should be initialized at this point
+            throw new IllegalStateException();
+        }
+        return (XMLLib)so.associateValue(XML_LIB_KEY, this);
+    }
+
+    public abstract boolean isXMLName(Context cx, Object name);
+
+    public abstract Ref nameRef(Context cx, Object name,
+                                Scriptable scope, int memberTypeFlags);
+
+    public abstract Ref nameRef(Context cx, Object namespace, Object name,
+                                Scriptable scope, int memberTypeFlags);
+
+    /**
+     * Escapes the reserved characters in a value of an attribute.
+     *
+     * @param value Unescaped text
+     * @return The escaped text
+     */
+    public abstract String escapeAttributeValue(Object value);
+
+    /**
+     * Escapes the reserved characters in a value of a text node.
+     *
+     * @param value Unescaped text
+     * @return The escaped text
+     */
+    public abstract String escapeTextValue(Object value);
+
+
+    /**
+     * Construct namespace for default xml statement.
+     */
+    public abstract Object toDefaultXmlNamespace(Context cx, Object uriValue);
+}
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/xml/XMLObject.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/xml/XMLObject.java
new file mode 100644
index 0000000..5033564
--- /dev/null
+++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/xml/XMLObject.java
@@ -0,0 +1,128 @@
+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *   Ethan Hugg
+ *   Terry Lucas
+ *   Milen Nankov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript.xml;
+
+import org.mozilla.javascript.*;
+
+/**
+ *  This Interface describes what all XML objects (XML, XMLList) should have in common.
+ *
+ */
+public abstract class XMLObject extends IdScriptableObject
+{
+    public XMLObject()
+    {
+    }
+
+    public XMLObject(Scriptable scope, Scriptable prototype)
+    {
+        super(scope, prototype);
+    }
+
+    /**
+     * Implementation of ECMAScript [[Has]].
+     */
+    public abstract boolean ecmaHas(Context cx, Object id);
+
+    /**
+     * Implementation of ECMAScript [[Get]].
+     */
+    public abstract Object ecmaGet(Context cx, Object id);
+
+    /**
+     * Implementation of ECMAScript [[Put]].
+     */
+    public abstract void ecmaPut(Context cx, Object id, Object value);
+
+    /**
+     * Implementation of ECMAScript [[Delete]].
+     */
+    public abstract boolean ecmaDelete(Context cx, Object id);
+
+    /**
+     * Return an additional object to look for methods that runtime should
+     * consider during method search. Return null if no such object available.
+     */
+    public abstract Scriptable getExtraMethodSource(Context cx);
+
+    /**
+     * Generic reference to implement x.@y, x..y etc.
+     */
+    public abstract Ref memberRef(Context cx, Object elem,
+                                  int memberTypeFlags);
+
+    /**
+     * Generic reference to implement x::ns, x.@ns::y, x..@ns::y etc.
+     */
+    public abstract Ref memberRef(Context cx, Object namespace, Object elem,
+                                  int memberTypeFlags);
+
+    /**
+     * Wrap this object into NativeWith to implement the with statement.
+     */
+    public abstract NativeWith enterWith(Scriptable scope);
+
+    /**
+     * Wrap this object into NativeWith to implement the .() query.
+     */
+    public abstract NativeWith enterDotQuery(Scriptable scope);
+
+    /**
+     * Custom <tt>+</tt> operator.
+     * Should return {@link Scriptable#NOT_FOUND} if this object does not have
+     * custom addition operator for the given value,
+     * or the result of the addition operation.
+     * <p>
+     * The default implementation returns {@link Scriptable#NOT_FOUND}
+     * to indicate no custom addition operation.
+     *
+     * @param cx the Context object associated with the current thread.
+     * @param thisIsLeft if true, the object should calculate this + value
+     *                   if false, the object should calculate value + this.
+     * @param value the second argument for addition operation.
+     */
+    public Object addValues(Context cx, boolean thisIsLeft, Object value)
+    {
+        return Scriptable.NOT_FOUND;
+    }
+
+}