Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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 |
| 4 | // met: |
| 5 | // |
| 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. |
| 15 | // |
| 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. |
| 27 | |
| 28 | function ReturnArguments() { |
| 29 | return arguments; |
| 30 | } |
| 31 | |
| 32 | function ReturnReceiver() { |
| 33 | return this; |
| 34 | } |
| 35 | |
| 36 | |
| 37 | function Global() { |
| 38 | return ReturnArguments.apply(this, arguments); |
| 39 | } |
| 40 | |
| 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]); |
| 47 | |
| 48 | |
| 49 | function Local() { |
| 50 | var object = { f: ReturnArguments }; |
| 51 | return object.f.apply(this, arguments); |
| 52 | } |
| 53 | |
| 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]); |
| 60 | |
| 61 | |
| 62 | function ShadowArguments() { |
| 63 | var arguments = [3, 4]; |
| 64 | return ReturnArguments.apply(this, arguments); |
| 65 | } |
| 66 | |
| 67 | assertEquals(2, ShadowArguments().length); |
| 68 | assertEquals(3, ShadowArguments()[0]); |
| 69 | assertEquals(4, ShadowArguments()[1]); |
| 70 | |
| 71 | |
| 72 | function NonObjectReceiver(receiver) { |
| 73 | return ReturnReceiver.apply(receiver, arguments); |
| 74 | } |
| 75 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 76 | assertEquals(Object(42), NonObjectReceiver(42)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 77 | assertEquals("object", typeof NonObjectReceiver(42)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 78 | assertInstanceof(NonObjectReceiver(42), Number); |
| 79 | assertSame(this, NonObjectReceiver(null)); |
| 80 | assertSame(this, NonObjectReceiver(void 0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 81 | |
| 82 | |
| 83 | function FunctionReceiver() { |
| 84 | return ReturnReceiver.apply(Object, arguments); |
| 85 | } |
| 86 | |
| 87 | assertTrue(Object === FunctionReceiver()); |
| 88 | |
| 89 | |
| 90 | function ShadowApply() { |
| 91 | function f() { return 42; } |
| 92 | f.apply = function() { return 87; } |
| 93 | return f.apply(this, arguments); |
| 94 | } |
| 95 | |
| 96 | assertEquals(87, ShadowApply()); |
| 97 | assertEquals(87, ShadowApply(1)); |
| 98 | assertEquals(87, ShadowApply(1, 2)); |
| 99 | |
| 100 | |
| 101 | function CallNonFunction() { |
| 102 | var object = { apply: Function.prototype.apply }; |
| 103 | return object.apply(this, arguments); |
| 104 | } |
| 105 | |
| 106 | assertThrows(CallNonFunction, TypeError); |
| 107 | |
| 108 | |
| 109 | // Make sure that the stack after the apply optimization is |
| 110 | // in a valid state. |
| 111 | function SimpleStackCheck() { |
| 112 | var sentinel = 42; |
| 113 | var result = ReturnArguments.apply(this, arguments); |
| 114 | assertTrue(result != null); |
| 115 | assertEquals(42, sentinel); |
| 116 | } |
| 117 | |
| 118 | SimpleStackCheck(); |
| 119 | |
| 120 | |
| 121 | function ShadowArgumentsWithConstant() { |
| 122 | var arguments = null; |
| 123 | return ReturnArguments.apply(this, arguments); |
| 124 | } |
| 125 | |
| 126 | assertEquals(0, ShadowArgumentsWithConstant().length); |
| 127 | assertEquals(0, ShadowArgumentsWithConstant(1).length); |
| 128 | assertEquals(0, ShadowArgumentsWithConstant(1, 2).length); |
| 129 | |
| 130 | |
| 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); |