/* -*- 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() { printBugNumber(BUGNUMBER); printStatus(summary); for (var i=0; i