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diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeFunction.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/NativeFunction.java
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+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Norris Boyd
+ *   Igor Bukanov
+ *   Bob Jervis
+ *   Roger Lawrence
+ *   Mike McCabe
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+package org.mozilla.javascript;
+
+import org.mozilla.javascript.debug.DebuggableScript;
+
+/**
+ * This class implements the Function native object.
+ * See ECMA 15.3.
+ * @author Norris Boyd
+ */
+public abstract class NativeFunction extends BaseFunction
+{
+
+    public final void initScriptFunction(Context cx, Scriptable scope)
+    {
+        ScriptRuntime.setFunctionProtoAndParent(this, scope);
+    }
+
+    /**
+     * @param indent How much to indent the decompiled result
+     *
+     * @param flags Flags specifying format of decompilation output
+     */
+    final String decompile(int indent, int flags)
+    {
+        String encodedSource = getEncodedSource();
+        if (encodedSource == null) {
+            return super.decompile(indent, flags);
+        } else {
+            UintMap properties = new UintMap(1);
+            properties.put(Decompiler.INITIAL_INDENT_PROP, indent);
+            return Decompiler.decompile(encodedSource, flags, properties);
+        }
+    }
+
+    public int getLength()
+    {
+        int paramCount = getParamCount();
+        if (getLanguageVersion() != Context.VERSION_1_2) {
+            return paramCount;
+        }
+        Context cx = Context.getContext();
+        NativeCall activation = ScriptRuntime.findFunctionActivation(cx, this);
+        if (activation == null) {
+            return paramCount;
+        }
+        return activation.originalArgs.length;
+    }
+
+    public int getArity()
+    {
+        return getParamCount();
+    }
+
+    /**
+     * @deprecated Use {@link BaseFunction#getFunctionName()} instead.
+     * For backwards compatibility keep an old method name used by
+     * Batik and possibly others.
+     */
+    public String jsGet_name()
+    {
+        return getFunctionName();
+    }
+
+    /**
+     * Get encoded source string.
+     */
+    public String getEncodedSource()
+    {
+        return null;
+    }
+
+    public DebuggableScript getDebuggableView()
+    {
+        return null;
+    }
+
+    /**
+     * Resume execution of a suspended generator.
+     * @param cx The current context
+     * @param scope Scope for the parent generator function
+     * @param operation The resumption operation (next, send, etc.. )
+     * @param state The generator state (has locals, stack, etc.)
+     * @param value The return value of yield (if required).
+     * @return The next yielded value (if any)
+     */
+    public Object resumeGenerator(Context cx, Scriptable scope,
+                                  int operation, Object state, Object value)
+    {
+        throw new EvaluatorException("resumeGenerator() not implemented");
+    }
+
+
+    protected abstract int getLanguageVersion();
+
+    /**
+     * Get number of declared parameters. It should be 0 for scripts.
+     */
+    protected abstract int getParamCount();
+
+    /**
+     * Get number of declared parameters and variables defined through var
+     * statements.
+     */
+    protected abstract int getParamAndVarCount();
+
+    /**
+     * Get parameter or variable name.
+     * If <tt>index < {@link #getParamCount()}</tt>, then return the name of the
+     * corresponding parameter. Otherwise return the name of variable.
+     */
+    protected abstract String getParamOrVarName(int index);
+
+    /**
+     * Get parameter or variable const-ness.
+     * If <tt>index < {@link #getParamCount()}</tt>, then return the const-ness
+     * of the corresponding parameter. Otherwise return whether the variable is
+     * const.
+     */
+    protected boolean getParamOrVarConst(int index)
+    {
+        // By default return false to preserve compatibility with existing 
+        // classes subclassing this class, which are mostly generated by jsc 
+        // from earlier Rhino versions. See Bugzilla #396117.
+        return false;
+    }
+}
+