1 files changed, 362 insertions, 0 deletions
diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java
new file mode 100644
index 0000000..2d3553f
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+++ b/trunk/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;
+    }
+}
+