/* -*- 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 = [];
/* * Try to confuse the engine by adding a |p| property to everything!
*/ var p = 'global'; var o = {p:'object'};
function f(obj)
{ return f.caller.p ;
}
/* * Call |f| directly
*/ function g(obj)
{ var p = 'local'; return f(obj);
}
g.p = "hello";
/* * Call |f| via |f.call|
*/ function gg(obj)
{ var p = 'local'; return f.call(obj, obj);
}
gg.p = "hello";
/* * Call |f| via |f.apply|
*/ function ggg(obj)
{ var p = 'local'; return f.apply(obj, [obj]);
}
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(o);
expect = "hello";
addThis();
status = inSection(2);
actual = gg(o);
expect = "hello";
addThis();
status = inSection(3);
actual = ggg(o);
expect = "hello";
addThis();
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