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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):
* Igor Bukanov
*
* 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;
public class IdFunctionObject extends BaseFunction
{
static final long serialVersionUID = -5332312783643935019L;
public IdFunctionObject(IdFunctionCall idcall, Object tag, int id, int arity)
{
if (arity < 0)
throw new IllegalArgumentException();
this.idcall = idcall;
this.tag = tag;
this.methodId = id;
this.arity = arity;
if (arity < 0) throw new IllegalArgumentException();
}
public IdFunctionObject(IdFunctionCall idcall, Object tag, int id,
String name, int arity, Scriptable scope)
{
super(scope, null);
if (arity < 0)
throw new IllegalArgumentException();
if (name == null)
throw new IllegalArgumentException();
this.idcall = idcall;
this.tag = tag;
this.methodId = id;
this.arity = arity;
this.functionName = name;
}
public void initFunction(String name, Scriptable scope)
{
if (name == null) throw new IllegalArgumentException();
if (scope == null) throw new IllegalArgumentException();
this.functionName = name;
setParentScope(scope);
}
public final boolean hasTag(Object tag)
{
return this.tag == tag;
}
public final int methodId()
{
return methodId;
}
public final void markAsConstructor(Scriptable prototypeProperty)
{
useCallAsConstructor = true;
setImmunePrototypeProperty(prototypeProperty);
}
public final void addAsProperty(Scriptable target)
{
ScriptableObject.defineProperty(target, functionName, this,
ScriptableObject.DONTENUM);
}
public void exportAsScopeProperty()
{
addAsProperty(getParentScope());
}
public Scriptable getPrototype()
{
// Lazy initialization of prototype: for native functions this
// may not be called at all
Scriptable proto = super.getPrototype();
if (proto == null) {
proto = getFunctionPrototype(getParentScope());
setPrototype(proto);
}
return proto;
}
public Object call(Context cx, Scriptable scope, Scriptable thisObj,
Object[] args)
{
return idcall.execIdCall(this, cx, scope, thisObj, args);
}
public Scriptable createObject(Context cx, Scriptable scope)
{
if (useCallAsConstructor) {
return null;
}
// Throw error if not explicitly coded to be used as constructor,
// to satisfy ECMAScript standard (see bugzilla 202019).
// To follow current (2003-05-01) SpiderMonkey behavior, change it to:
// return super.createObject(cx, scope);
throw ScriptRuntime.typeError1("msg.not.ctor", functionName);
}
String decompile(int indent, int flags)
{
StringBuffer sb = new StringBuffer();
boolean justbody = (0 != (flags & Decompiler.ONLY_BODY_FLAG));
if (!justbody) {
sb.append("function ");
sb.append(getFunctionName());
sb.append("() { ");
}
sb.append("[native code for ");
if (idcall instanceof Scriptable) {
Scriptable sobj = (Scriptable)idcall;
sb.append(sobj.getClassName());
sb.append('.');
}
sb.append(getFunctionName());
sb.append(", arity=");
sb.append(getArity());
sb.append(justbody ? "]\n" : "] }\n");
return sb.toString();
}
public int getArity()
{
return arity;
}
public int getLength() { return getArity(); }
public String getFunctionName()
{
return (functionName == null) ? "" : functionName;
}
public final RuntimeException unknown()
{
// It is program error to call id-like methods for unknown function
return new IllegalArgumentException(
"BAD FUNCTION ID="+methodId+" MASTER="+idcall);
}
private final IdFunctionCall idcall;
private final Object tag;
private final int methodId;
private int arity;
private boolean useCallAsConstructor;
private String functionName;
}
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