122 lines
4.3 KiB
ActionScript
122 lines
4.3 KiB
ActionScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is [Open Source Virtual Machine.].
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*
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* The Initial Developer of the Original Code is
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* Adobe System Incorporated.
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* Portions created by the Initial Developer are Copyright (C) 2004-2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Adobe AS3 Team
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package
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{
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//pseudo-final - no user class can extend Function
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dynamic public class Function
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{
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// Function.length = 1 per ES3
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// E262 {ReadOnly, DontDelete, DontEnum }
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public static const length:int = 1
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// E262 {DontDelete}
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// JS {DontEnum,DontDelete}
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public native function get prototype()
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public native function set prototype(p)
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// E262 {DontEnum, DontDelete, ReadOnly}
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public native function get length():int
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// called by native code to create empty functions used for
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// prototype and no-arg constructor.
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private static function emptyCtor()
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{
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return function() {}
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}
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/* cn: Spidermonkey returns the actual source text of the function here. The ES3
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// standard only says:
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15.3.4.2 Function.prototype.toString ( )
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An implementation-dependent representation of the function is returned. This
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representation has the syntax of a FunctionDeclaration. Note in particular
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that the use and placement of white space, line terminators, and semicolons
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within the representation string is implementation-dependent.
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The toString function is not generic; it throws a TypeError exception if its this value is not a Function object.
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Therefore, it cannot be transferred to other kinds of objects for use as a method.
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//
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// We don't have the source text, so this impl follows the letter if not the intent
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// of the spec.
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//
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// Note: we only honor the compact ES3/4 spec, which means
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// we don't support new Function(stringArg) where stringArg is the text of
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// the function to be compiled at runtime. Returning the true text of the
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// function in toString() seems to be a bookend to this feature to me, and
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// thus shouldn't be in the compact specification either. */
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prototype.toLocaleString =
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prototype.toString = function():String
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{
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var f:Function = this
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return "function Function() {}"
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}
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AS3 native function call(thisArg=void 0, ...args)
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prototype.call = function(thisArg=void 0, ...args)
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{
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var f:Function = this
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return f.AS3::apply(thisArg, args)
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}
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AS3 native function apply(thisArg=void 0, argArray=void 0)
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prototype.apply = function(thisArg=void 0, argArray=void 0)
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{
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var f:Function = this
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return f.AS3::apply(thisArg, argArray)
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}
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_dontEnumPrototype(prototype);
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}
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}
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// not dynamic
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final class MethodClosure extends Function
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{
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override public function get prototype()
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{
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return null
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}
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override public function set prototype(p)
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{
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Error.throwError( ReferenceError, 1074 /*kConstWriteError*/, "prototype", "MethodClosure" );
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}
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public override native function get length():int
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}
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