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// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
function ReturnArguments() {
return arguments;
}
function ReturnReceiver() {
return this;
}
function Global() {
return ReturnArguments.apply(this, arguments);
}
assertEquals(0, Global().length);
assertEquals(1, Global(1).length);
assertEquals(2, Global(2)[0]);
assertEquals(2, Global(3, 4).length);
assertEquals(3, Global(3, 4)[0]);
assertEquals(4, Global(3, 4)[1]);
function Local() {
var object = { f: ReturnArguments };
return object.f.apply(this, arguments);
}
assertEquals(0, Local().length);
assertEquals(1, Local(1).length);
assertEquals(2, Local(2)[0]);
assertEquals(2, Local(3, 4).length);
assertEquals(3, Local(3, 4)[0]);
assertEquals(4, Local(3, 4)[1]);
function ShadowArguments() {
var arguments = [3, 4];
return ReturnArguments.apply(this, arguments);
}
assertEquals(2, ShadowArguments().length);
assertEquals(3, ShadowArguments()[0]);
assertEquals(4, ShadowArguments()[1]);
function NonObjectReceiver(receiver) {
return ReturnReceiver.apply(receiver, arguments);
}
assertEquals(Object(42), NonObjectReceiver(42));
assertEquals("object", typeof NonObjectReceiver(42));
assertInstanceof(NonObjectReceiver(42), Number);
assertSame(this, NonObjectReceiver(null));
assertSame(this, NonObjectReceiver(void 0));
function FunctionReceiver() {
return ReturnReceiver.apply(Object, arguments);
}
assertTrue(Object === FunctionReceiver());
function ShadowApply() {
function f() { return 42; }
f.apply = function() { return 87; }
return f.apply(this, arguments);
}
assertEquals(87, ShadowApply());
assertEquals(87, ShadowApply(1));
assertEquals(87, ShadowApply(1, 2));
function CallNonFunction() {
var object = { apply: Function.prototype.apply };
return object.apply(this, arguments);
}
assertThrows(CallNonFunction, TypeError);
// Make sure that the stack after the apply optimization is
// in a valid state.
function SimpleStackCheck() {
var sentinel = 42;
var result = ReturnArguments.apply(this, arguments);
assertTrue(result != null);
assertEquals(42, sentinel);
}
SimpleStackCheck();
function ShadowArgumentsWithConstant() {
var arguments = null;
return ReturnArguments.apply(this, arguments);
}
assertEquals(0, ShadowArgumentsWithConstant().length);
assertEquals(0, ShadowArgumentsWithConstant(1).length);
assertEquals(0, ShadowArgumentsWithConstant(1, 2).length);
// Make sure we can deal with unfolding lots of arguments on the
// stack even in the presence of the apply optimizations.
var array = new Array(2048);
assertEquals(2048, Global.apply(this, array).length);
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