1 // Copyright 2009 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 function ReturnArguments() {
32 function ReturnReceiver() {
38 return ReturnArguments.apply(this, arguments);
41 assertEquals(0, Global().length);
42 assertEquals(1, Global(1).length);
43 assertEquals(2, Global(2)[0]);
44 assertEquals(2, Global(3, 4).length);
45 assertEquals(3, Global(3, 4)[0]);
46 assertEquals(4, Global(3, 4)[1]);
50 var object = { f: ReturnArguments };
51 return object.f.apply(this, arguments);
54 assertEquals(0, Local().length);
55 assertEquals(1, Local(1).length);
56 assertEquals(2, Local(2)[0]);
57 assertEquals(2, Local(3, 4).length);
58 assertEquals(3, Local(3, 4)[0]);
59 assertEquals(4, Local(3, 4)[1]);
62 function ShadowArguments() {
63 var arguments = [3, 4];
64 return ReturnArguments.apply(this, arguments);
67 assertEquals(2, ShadowArguments().length);
68 assertEquals(3, ShadowArguments()[0]);
69 assertEquals(4, ShadowArguments()[1]);
72 function NonObjectReceiver(receiver) {
73 return ReturnReceiver.apply(receiver, arguments);
76 assertEquals(Object(42), NonObjectReceiver(42));
77 assertEquals("object", typeof NonObjectReceiver(42));
78 assertInstanceof(NonObjectReceiver(42), Number);
79 assertSame(this, NonObjectReceiver(null));
80 assertSame(this, NonObjectReceiver(void 0));
83 function FunctionReceiver() {
84 return ReturnReceiver.apply(Object, arguments);
87 assertTrue(Object === FunctionReceiver());
90 function ShadowApply() {
91 function f() { return 42; }
92 f.apply = function() { return 87; }
93 return f.apply(this, arguments);
96 assertEquals(87, ShadowApply());
97 assertEquals(87, ShadowApply(1));
98 assertEquals(87, ShadowApply(1, 2));
101 function CallNonFunction() {
102 var object = { apply: Function.prototype.apply };
103 return object.apply(this, arguments);
106 assertThrows(CallNonFunction, TypeError);
109 // Make sure that the stack after the apply optimization is
111 function SimpleStackCheck() {
113 var result = ReturnArguments.apply(this, arguments);
114 assertTrue(result != null);
115 assertEquals(42, sentinel);
121 function ShadowArgumentsWithConstant() {
122 var arguments = null;
123 return ReturnArguments.apply(this, arguments);
126 assertEquals(0, ShadowArgumentsWithConstant().length);
127 assertEquals(0, ShadowArgumentsWithConstant(1).length);
128 assertEquals(0, ShadowArgumentsWithConstant(1, 2).length);
131 // Make sure we can deal with unfolding lots of arguments on the
132 // stack even in the presence of the apply optimizations.
133 var array = new Array(2048);
134 assertEquals(2048, Global.apply(this, array).length);