Merge branch 'master' into plugin-framework

1 files changed, 1129 insertions, 0 deletions

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;
+}