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41 ECMA Section: Arguments Object
44 When control enters an execution context for declared function code,
45 anonymous code, or implementation-supplied code, an arguments object is
46 created and initialized as follows:
48 The [[Prototype]] of the arguments object is to the original Object
49 prototype object, the one that is the initial value of Object.prototype
52 A property is created with name callee and property attributes {DontEnum}.
53 The initial value of this property is the function object being executed.
54 This allows anonymous functions to be recursive.
56 A property is created with name length and property attributes {DontEnum}.
57 The initial value of this property is the number of actual parameter values
58 supplied by the caller.
60 For each non-negative integer, iarg, less than the value of the length
61 property, a property is created with name ToString(iarg) and property
62 attributes { DontEnum }. The initial value of this property is the value
63 of the corresponding actual parameter supplied by the caller. The first
64 actual parameter value corresponds to iarg = 0, the second to iarg = 1 and
65 so on. In the case when iarg is less than the number of formal parameters
66 for the function object, this property shares its value with the
67 corresponding property of the activation object. This means that changing
68 this property changes the corresponding property of the activation object
69 and vice versa. The value sharing mechanism depends on the implementation.
71 Author: christine@netscape.com
72 Date: 12 november 1997
75 var SECTION = "10.1.8-2";
76 var VERSION = "ECMA_1";
78 var TITLE = "Arguments Object";
80 writeHeaderToLog( SECTION + " "+ TITLE);
82 // Tests for anonymous functions
84 var GetCallee = new Function( "var c = arguments.callee; return c" );
85 var GetArguments = new Function( "var a = arguments; return a" );
86 var GetLength = new Function( "var l = arguments.length; return l" );
88 var ARG_STRING = "value of the argument property";
90 new TestCase( SECTION,
97 for ( var i = 0, args = "" ; i < LIMIT; i++ ) {
98 args += String(i) + ( i+1 < LIMIT ? "," : "" );
102 var LENGTH = eval( "GetLength("+ args +")" );
104 new TestCase( SECTION,
105 "GetLength("+args+")",
109 var ARGUMENTS = eval( "GetArguments( " +args+")" );
111 for ( var i = 0; i < 100; i++ ) {
112 new TestCase( SECTION,
113 "GetArguments("+args+")["+i+"]",