The Tor Browser / file comparison
comparison: js/src/tests/js1_5/Function/regress-222029-002.js
js/src/tests/js1_5/Function/regress-222029-002.js
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
equal
deleted
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replaced
| -1:000000000000 | 0:e72d84452860 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* | |
| 7 * | |
| 8 * Date: 13 Oct 2003 | |
| 9 * SUMMARY: Make our f.caller property match IE's wrt f.apply and f.call | |
| 10 * See http://bugzilla.mozilla.org/show_bug.cgi?id=222029 | |
| 11 * | |
| 12 * Below, when gg calls f via |f.call|, we have this call chain: | |
| 13 * | |
| 14 * calls calls | |
| 15 * gg() ---------> Function.prototype.call() ---------> f() | |
| 16 * | |
| 17 * | |
| 18 * The question this bug addresses is, "What should we say |f.caller| is?" | |
| 19 * | |
| 20 * Before this fix, SpiderMonkey said it was |Function.prototype.call|. | |
| 21 * After this fix, SpiderMonkey emulates IE and says |gg| instead. | |
| 22 * | |
| 23 */ | |
| 24 //----------------------------------------------------------------------------- | |
| 25 var UBound = 0; | |
| 26 var BUGNUMBER = 222029; | |
| 27 var summary = "Make our f.caller property match IE's wrt f.apply and f.call"; | |
| 28 var status = ''; | |
| 29 var statusitems = []; | |
| 30 var actual = ''; | |
| 31 var actualvalues = []; | |
| 32 var expect= ''; | |
| 33 var expectedvalues = []; | |
| 34 | |
| 35 /* | |
| 36 * Try to confuse the engine by adding a |p| property to everything! | |
| 37 */ | |
| 38 var p = 'global'; | |
| 39 var o = {p:'object'}; | |
| 40 | |
| 41 | |
| 42 function f(obj) | |
| 43 { | |
| 44 return f.caller.p ; | |
| 45 } | |
| 46 | |
| 47 | |
| 48 /* | |
| 49 * Call |f| directly | |
| 50 */ | |
| 51 function g(obj) | |
| 52 { | |
| 53 var p = 'local'; | |
| 54 return f(obj); | |
| 55 } | |
| 56 g.p = "hello"; | |
| 57 | |
| 58 | |
| 59 /* | |
| 60 * Call |f| via |f.call| | |
| 61 */ | |
| 62 function gg(obj) | |
| 63 { | |
| 64 var p = 'local'; | |
| 65 return f.call(obj, obj); | |
| 66 } | |
| 67 gg.p = "hello"; | |
| 68 | |
| 69 | |
| 70 /* | |
| 71 * Call |f| via |f.apply| | |
| 72 */ | |
| 73 function ggg(obj) | |
| 74 { | |
| 75 var p = 'local'; | |
| 76 return f.apply(obj, [obj]); | |
| 77 } | |
| 78 ggg.p = "hello"; | |
| 79 | |
| 80 | |
| 81 /* | |
| 82 * Shadow |p| on |Function.prototype.call|, |Function.prototype.apply|. | |
| 83 * In Sections 2 and 3 below, we no longer expect to recover this value - | |
| 84 */ | |
| 85 Function.prototype.call.p = "goodbye"; | |
| 86 Function.prototype.apply.p = "goodbye"; | |
| 87 | |
| 88 | |
| 89 | |
| 90 status = inSection(1); | |
| 91 actual = g(o); | |
| 92 expect = "hello"; | |
| 93 addThis(); | |
| 94 | |
| 95 status = inSection(2); | |
| 96 actual = gg(o); | |
| 97 expect = "hello"; | |
| 98 addThis(); | |
| 99 | |
| 100 status = inSection(3); | |
| 101 actual = ggg(o); | |
| 102 expect = "hello"; | |
| 103 addThis(); | |
| 104 | |
| 105 | |
| 106 | |
| 107 | |
| 108 //----------------------------------------------------------------------------- | |
| 109 test(); | |
| 110 //----------------------------------------------------------------------------- | |
| 111 | |
| 112 | |
| 113 | |
| 114 function addThis() | |
| 115 { | |
| 116 statusitems[UBound] = status; | |
| 117 actualvalues[UBound] = actual; | |
| 118 expectedvalues[UBound] = expect; | |
| 119 UBound++; | |
| 120 } | |
| 121 | |
| 122 | |
| 123 function test() | |
| 124 { | |
| 125 enterFunc('test'); | |
| 126 printBugNumber(BUGNUMBER); | |
| 127 printStatus(summary); | |
| 128 | |
| 129 for (var i=0; i<UBound; i++) | |
| 130 { | |
| 131 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); | |
| 132 } | |
| 133 | |
| 134 exitFunc ('test'); | |
| 135 } |
