| /* -*- 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/. */ |
| |
| /* |
| * |
| * Date: 13 Oct 2003 |
| * SUMMARY: Make our f.caller property match IE's wrt f.apply and f.call |
| * See http://bugzilla.mozilla.org/show_bug.cgi?id=222029 |
| * |
| * Below, when gg calls f via |f.call|, we have this call chain: |
| * |
| * calls calls |
| * gg() ---------> Function.prototype.call() ---------> f() |
| * |
| * |
| * The question this bug addresses is, "What should we say |f.caller| is?" |
| * |
| * Before this fix, SpiderMonkey said it was |Function.prototype.call|. |
| * After this fix, SpiderMonkey emulates IE and says |gg| instead. |
| * |
| */ |
| //----------------------------------------------------------------------------- |
| var UBound = 0; |
| var BUGNUMBER = 222029; |
| var summary = "Make our f.caller property match IE's wrt f.apply and f.call"; |
| var status = ''; |
| var statusitems = []; |
| var actual = ''; |
| var actualvalues = []; |
| var expect= ''; |
| var expectedvalues = []; |
| |
| |
| function f() |
| { |
| return f.caller.p ; |
| } |
| |
| |
| /* |
| * Call |f| directly |
| */ |
| function g() |
| { |
| return f(); |
| } |
| g.p = "hello"; |
| |
| |
| /* |
| * Call |f| via |f.call| |
| */ |
| function gg() |
| { |
| return f.call(this); |
| } |
| gg.p = "hello"; |
| |
| |
| /* |
| * Call |f| via |f.apply| |
| */ |
| function ggg() |
| { |
| return f.apply(this); |
| } |
| ggg.p = "hello"; |
| |
| |
| /* |
| * Shadow |p| on |Function.prototype.call|, |Function.prototype.apply|. |
| * In Sections 2 and 3 below, we no longer expect to recover this value - |
| */ |
| Function.prototype.call.p = "goodbye"; |
| Function.prototype.apply.p = "goodbye"; |
| |
| |
| |
| status = inSection(1); |
| actual = g(); |
| expect = "hello"; |
| addThis(); |
| |
| status = inSection(2); |
| actual = gg(); |
| expect = "hello"; |
| addThis(); |
| |
| status = inSection(3); |
| actual = ggg(); |
| expect = "hello"; |
| addThis(); |
| |
| |
| |
| |
| //----------------------------------------------------------------------------- |
| test(); |
| //----------------------------------------------------------------------------- |
| |
| |
| |
| function addThis() |
| { |
| statusitems[UBound] = status; |
| actualvalues[UBound] = actual; |
| expectedvalues[UBound] = expect; |
| UBound++; |
| } |
| |
| |
| function test() |
| { |
| enterFunc('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus(summary); |
| |
| for (var i=0; i<UBound; i++) |
| { |
| reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); |
| } |
| |
| exitFunc ('test'); |
| } |