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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
* Bob Jervis
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.javascript;
/**
* This class implements the activation object.
*
* See ECMA 10.1.6
*
* @see org.mozilla.javascript.Arguments
* @author Norris Boyd
*/
public final class NativeCall extends IdScriptableObject
{
static final long serialVersionUID = -7471457301304454454L;
private static final Object CALL_TAG = new Object();
static void init(Scriptable scope, boolean sealed)
{
NativeCall obj = new NativeCall();
obj.exportAsJSClass(MAX_PROTOTYPE_ID, scope, sealed);
}
NativeCall() { }
NativeCall(NativeFunction function, Scriptable scope, Object[] args)
{
this.function = function;
setParentScope(scope);
// leave prototype null
this.originalArgs = (args == null) ? ScriptRuntime.emptyArgs : args;
// initialize values of arguments
int paramAndVarCount = function.getParamAndVarCount();
int paramCount = function.getParamCount();
if (paramAndVarCount != 0) {
for (int i = 0; i < paramCount; ++i) {
String name = function.getParamOrVarName(i);
Object val = i < args.length ? args[i]
: Undefined.instance;
defineProperty(name, val, PERMANENT);
}
}
// initialize "arguments" property but only if it was not overridden by
// the parameter with the same name
if (!super.has("arguments", this)) {
defineProperty("arguments", new Arguments(this), PERMANENT);
}
if (paramAndVarCount != 0) {
for (int i = paramCount; i < paramAndVarCount; ++i) {
String name = function.getParamOrVarName(i);
if (!super.has(name, this)) {
if (function.getParamOrVarConst(i))
defineProperty(name, Undefined.instance, CONST);
else
defineProperty(name, Undefined.instance, PERMANENT);
}
}
}
}
public String getClassName()
{
return "Call";
}
protected int findPrototypeId(String s)
{
return s.equals("constructor") ? Id_constructor : 0;
}
protected void initPrototypeId(int id)
{
String s;
int arity;
if (id == Id_constructor) {
arity=1; s="constructor";
} else {
throw new IllegalArgumentException(String.valueOf(id));
}
initPrototypeMethod(CALL_TAG, id, s, arity);
}
public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
Scriptable thisObj, Object[] args)
{
if (!f.hasTag(CALL_TAG)) {
return super.execIdCall(f, cx, scope, thisObj, args);
}
int id = f.methodId();
if (id == Id_constructor) {
if (thisObj != null) {
throw Context.reportRuntimeError1("msg.only.from.new", "Call");
}
ScriptRuntime.checkDeprecated(cx, "Call");
NativeCall result = new NativeCall();
result.setPrototype(getObjectPrototype(scope));
return result;
}
throw new IllegalArgumentException(String.valueOf(id));
}
private static final int
Id_constructor = 1,
MAX_PROTOTYPE_ID = 1;
NativeFunction function;
Object[] originalArgs;
transient NativeCall parentActivationCall;
}
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