| /* -*- 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: 15.3.5-1.js |
| ECMA Section: 15.3.5 Properties of Function Instances |
| new Function(p1, p2, ..., pn, body ) |
| |
| Description: |
| |
| 15.3.5.1 length |
| |
| The value of the length property is usually an integer that indicates |
| the "typical" number of arguments expected by the function. However, |
| the language permits the function to be invoked with some other number |
| of arguments. The behavior of a function when invoked on a number of |
| arguments other than the number specified by its length property depends |
| on the function. |
| |
| 15.3.5.2 prototype |
| The value of the prototype property is used to initialize the internal [[ |
| Prototype]] property of a newly created object before the Function object |
| is invoked as a constructor for that newly created object. |
| |
| 15.3.5.3 arguments |
| |
| The value of the arguments property is normally null if there is no |
| outstanding invocation of the function in progress (that is, the function has been called |
| but has not yet returned). When a non-internal Function object (15.3.2.1) is invoked, its |
| arguments property is "dynamically bound" to a newly created object that contains the |
| arguments on which it was invoked (see 10.1.6 and 10.1.8). Note that the use of this |
| property is discouraged; it is provided principally for compatibility with existing old code. |
| |
| Author: christine@netscape.com |
| Date: 28 october 1997 |
| |
| */ |
| |
| var SECTION = "15.3.5-1"; |
| var VERSION = "ECMA_1"; |
| startTest(); |
| var TITLE = "Properties of Function Instances"; |
| |
| writeHeaderToLog( SECTION + " "+TITLE); |
| |
| var args = ""; |
| |
| for ( var i = 0; i < 2000; i++ ) { |
| args += "arg"+i; |
| if ( i != 1999 ) { |
| args += ","; |
| } |
| } |
| |
| var s = ""; |
| |
| for ( var i = 0; i < 2000; i++ ) { |
| s += ".0005"; |
| if ( i != 1999 ) { |
| s += ","; |
| } |
| } |
| |
| MyFunc = new Function( args, "var r=0; for (var i = 0; i < MyFunc.length; i++ ) { if ( eval('arg'+i) == void 0) break; else r += eval('arg'+i); }; return r"); |
| MyObject = new Function( args, "for (var i = 0; i < MyFunc.length; i++ ) { if ( eval('arg'+i) == void 0) break; eval('this.arg'+i +'=arg'+i); };"); |
| |
| |
| new TestCase( SECTION, "MyFunc.length", 2000, MyFunc.length ); |
| new TestCase( SECTION, "var MY_OB = eval('MyFunc(s)')", 1, eval("var MY_OB = MyFunc("+s+"); MY_OB") ); |
| new TestCase( SECTION, "MyFunc.prototype.toString()", "[object Object]", MyFunc.prototype.toString() ); |
| new TestCase( SECTION, "typeof MyFunc.prototype", "object", typeof MyFunc.prototype ); |
| |
| |
| new TestCase( SECTION, "MyObject.length", 2000, MyObject.length ); |
| |
| new TestCase( SECTION, "FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1.length", 3, eval("FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1.length") ); |
| new TestCase( SECTION, "FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1()", 3, eval("FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1()") ); |
| new TestCase( SECTION, "FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1(1,2,3,4,5)", 3, eval("FUN1 = new Function( 'a','b','c', 'return FUN1.length' ); FUN1(1,2,3,4,5)") ); |
| |
| test(); |