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42 ECMA Section: Arguments Object
45 When control enters an execution context for declared function code,
46 anonymous code, or implementation-supplied code, an arguments object is
47 created and initialized as follows:
49 The [[Prototype]] of the arguments object is to the original Object
50 prototype object, the one that is the initial value of Object.prototype
53 A property is created with name callee and property attributes {DontEnum}.
54 The initial value of this property is the function object being executed.
55 This allows anonymous functions to be recursive.
57 A property is created with name length and property attributes {DontEnum}.
58 The initial value of this property is the number of actual parameter values
59 supplied by the caller.
61 For each non-negative integer, iarg, less than the value of the length
62 property, a property is created with name ToString(iarg) and property
63 attributes { DontEnum }. The initial value of this property is the value
64 of the corresponding actual parameter supplied by the caller. The first
65 actual parameter value corresponds to iarg = 0, the second to iarg = 1 and
66 so on. In the case when iarg is less than the number of formal parameters
67 for the function object, this property shares its value with the
68 corresponding property of the activation object. This means that changing
69 this property changes the corresponding property of the activation object
70 and vice versa. The value sharing mechanism depends on the implementation.
72 Author: christine@netscape.com
73 Date: 12 november 1997
76 var SECTION = "10.1.8";
77 var VERSION = "ECMA_1";
79 var TITLE = "Arguments Object";
81 writeHeaderToLog( SECTION + " "+ TITLE);
83 var ARG_STRING = "value of the argument property";
85 new TestCase( SECTION,
92 for ( var i = 0, args = "" ; i < LIMIT; i++ ) {
93 args += String(i) + ( i+1 < LIMIT ? "," : "" );
97 var LENGTH = eval( "GetLength("+ args +")" );
99 new TestCase( SECTION,
100 "GetLength("+args+")",
104 var ARGUMENTS = eval( "GetArguments( " +args+")" );
106 for ( var i = 0; i < 100; i++ ) {
107 new TestCase( SECTION,
108 "GetArguments("+args+")["+i+"]",
115 function TestFunction() {
116 var arg_proto = arguments.__proto__;
118 function GetCallee() {
119 var c = arguments.callee;
122 function GetArguments() {
126 function GetLength() {
127 var l = arguments.length;
131 function AnotherTestFunction() {
132 this.__proto__ = new Prototype();