/**
* This file Copyright (c) 2005-2008 Aptana, Inc. This program is
* dual-licensed under both the Aptana Public License and the GNU General
* Public license. You may elect to use one or the other of these licenses.
*
* This program is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. Redistribution, except as permitted by whichever of
* the GPL or APL you select, is prohibited.
*
* 1. For the GPL license (GPL), you can redistribute and/or modify this
* program under the terms of the GNU General Public License,
* Version 3, as published by the Free Software Foundation. You should
* have received a copy of the GNU General Public License, Version 3 along
* with this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Aptana provides a special exception to allow redistribution of this file
* with certain other free and open source software ("FOSS") code and certain additional terms
* pursuant to Section 7 of the GPL. You may view the exception and these
* terms on the web at http://www.aptana.com/legal/gpl/.
*
* 2. For the Aptana Public License (APL), this program and the
* accompanying materials are made available under the terms of the APL
* v1.0 which accompanies this distribution, and is available at
* http://www.aptana.com/legal/apl/.
*
* You may view the GPL, Aptana's exception and additional terms, and the
* APL in the file titled license.html at the root of the corresponding
* plugin containing this source file.
*
* Any modifications to this file must keep this entire header intact.
*/
package com.aptana.ide.editor.js.runtime;
import com.aptana.ide.editors.managers.FileContextManager;
import com.aptana.ide.lexer.IRange;
import com.aptana.ide.lexer.Range;
/**
* @author Kevin Lindsey
* @author Robin Debreuil
*/
public class JSFunctionConstructor extends NativeConstructorBase
{
/*
* Constructors
*/
/**
* Create a new instance of NativeFunction
*
* @param owningEnvironment
* The environment in which this native function was created
*/
public JSFunctionConstructor(Environment owningEnvironment)
{
super(owningEnvironment);
int fileIndex = FileContextManager.BUILT_IN_FILE_INDEX;
// get global
IScope global = owningEnvironment.getGlobal();
// put self into environment
global.putPropertyValue("Function", this, fileIndex, Property.DONT_DELETE | Property.DONT_ENUM); //$NON-NLS-1$
// create public prototype object
IObject prototype = owningEnvironment.createObject(fileIndex, Range.Empty);
// store our public prototype
this.putPropertyValue("prototype", prototype, fileIndex); //$NON-NLS-1$
// set Function.[[prototype]]
this.setPrototype(prototype);
}
/*
* Methods
*/
/**
* Initialize the properties on this object
*/
public void initializeProperties()
{
Environment environment = this.owningEnvironment;
int attributes = Property.DONT_DELETE | Property.DONT_ENUM;
int fileIndex = FileContextManager.BUILT_IN_FILE_INDEX;
int offset = Range.Empty.getStartingOffset();
// add built in memebers to Function
this.putPropertyValue("length", environment.createNumber(fileIndex, Range.Empty), fileIndex, attributes); //$NON-NLS-1$
// add built in memebers to Function.prototype
IObject prototype = this.getPropertyValue("prototype", fileIndex, offset); //$NON-NLS-1$
prototype.putPropertyValue("constructor", this, fileIndex, attributes); //$NON-NLS-1$
prototype.putPropertyValue("toString", environment.createFunction(fileIndex, Range.Empty), fileIndex, attributes); //$NON-NLS-1$
prototype.putPropertyValue("apply", environment.createFunction(fileIndex, Range.Empty), fileIndex, attributes); //$NON-NLS-1$
prototype.putPropertyValue("call", environment.createFunction(fileIndex, Range.Empty), fileIndex, attributes); //$NON-NLS-1$
}
/*
* IFunction implementation
*/
/**
* @see com.aptana.ide.editor.js.runtime.FunctionBase#construct(com.aptana.ide.editor.js.runtime.Environment, com.aptana.ide.editor.js.runtime.IObject[], int,
* IRange)
*/
public IObject construct(Environment environment, IObject[] arguments, int fileIndex, IRange sourceRegion)
{
int attributes = Property.DONT_DELETE | Property.DONT_ENUM;
// Create new instance
JSFunction instance = new JSFunction(sourceRegion);
// Point instance's [[proto]] to our public "prototype"
instance.setPrototype(this.getPropertyValue("prototype", fileIndex, sourceRegion.getStartingOffset())); //$NON-NLS-1$
// create public prototype
IObject prototype = environment.createObject(fileIndex, sourceRegion);
// set constructor
prototype.putPropertyValue("constructor", instance, fileIndex, attributes); //$NON-NLS-1$
// apply public prototype and other instance properties
instance.putPropertyValue("length", environment.createNumber(fileIndex, sourceRegion), fileIndex, attributes); //$NON-NLS-1$
instance.putPropertyValue("prototype", prototype, fileIndex, attributes); //$NON-NLS-1$
return instance;
}
/**
* @see com.aptana.ide.editor.js.runtime.FunctionBase#invoke(com.aptana.ide.editor.js.runtime.Environment, com.aptana.ide.editor.js.runtime.IObject[], int, IRange)
*/
public IObject invoke(Environment environment, IObject[] arguments, int fileIndex, IRange sourceRegion)
{
return environment.createFunction(fileIndex, sourceRegion);
}
}