| /* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| |
| /** |
| File Name: 10.1.6 |
| ECMA Section: Activation Object |
| Description: |
| |
| If the function object being invoked has an arguments property, let x be |
| the value of that property; the activation object is also given an internal |
| property [[OldArguments]] whose initial value is x; otherwise, an arguments |
| property is created for the function object but the activation object is |
| not given an [[OldArguments]] property. Next, arguments object described |
| below (the same one stored in the arguments property of the activation |
| object) is used as the new value of the arguments property of the function |
| object. This new value is installed even if the arguments property already |
| exists and has the ReadOnly attribute (as it will for native Function |
| objects). (These actions are taken to provide compatibility with a form of |
| program syntax that is now discouraged: to access the arguments object for |
| function f within the body of f by using the expression f.arguments. |
| The recommended way to access the arguments object for function f within |
| the body of f is simply to refer to the variable arguments.) |
| |
| Author: christine@netscape.com |
| Date: 12 november 1997 |
| */ |
| |
| var SECTION = "10.1.6"; |
| var VERSION = "ECMA_1"; |
| startTest(); |
| var TITLE = "Activation Object"; |
| |
| writeHeaderToLog( SECTION + " "+ TITLE); |
| |
| var arguments = "FAILED!"; |
| |
| var ARG_STRING = "value of the argument property"; |
| |
| new TestCase( SECTION, |
| "(new TestObject(0,1,2,3,4,5)).length", |
| 6, |
| (new TestObject(0,1,2,3,4,5)).length ); |
| |
| for ( i = 0; i < 6; i++ ) { |
| |
| new TestCase( SECTION, |
| "(new TestObject(0,1,2,3,4,5))["+i+"]", |
| i, |
| (new TestObject(0,1,2,3,4,5))[i]); |
| } |
| |
| |
| // The current object already has an arguments property. |
| |
| new TestCase( SECTION, |
| "(new AnotherTestObject(1,2,3)).arguments", |
| ARG_STRING, |
| (new AnotherTestObject(1,2,3)).arguments ); |
| |
| // The function invoked with [[Call]] |
| |
| new TestCase( SECTION, |
| "TestFunction(1,2,3)", |
| ARG_STRING, |
| TestFunction() + '' ); |
| |
| |
| test(); |
| |
| |
| |
| function Prototype() { |
| this.arguments = ARG_STRING; |
| } |
| function TestObject() { |
| this.__proto__ = new Prototype(); |
| return arguments; |
| } |
| function AnotherTestObject() { |
| this.__proto__ = new Prototype(); |
| return this; |
| } |
| function TestFunction() { |
| arguments = ARG_STRING; |
| return arguments; |
| } |
| function AnotherTestFunction() { |
| this.__proto__ = new Prototype(); |
| return this; |
| } |