reverted folder structure change for better mergeing with upstream

1 files changed, 0 insertions, 2526 deletions

diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Context.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Context.java
deleted file mode 100644
index 0833883..0000000
--- a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/Context.java
+++ /dev/null
@@ -1,2526 +0,0 @@
-/* -*- 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;
-}