Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1 | // Copyright 2010 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 Get0(a) { |
| 29 | return a[0]; |
| 30 | } |
| 31 | |
| 32 | function GetN(a,n) { |
| 33 | return a[n]; |
| 34 | } |
| 35 | |
| 36 | function GetA0(a) { |
| 37 | return a[a[0]]; |
| 38 | } |
| 39 | |
| 40 | function GetAN(a,n) { |
| 41 | return a[a[n]]; |
| 42 | } |
| 43 | |
| 44 | function GetAAN(a,n) { |
| 45 | return a[a[a[n]]]; |
| 46 | } |
| 47 | |
| 48 | function RunGetTests() { |
| 49 | var a = [2,0,1]; |
| 50 | assertEquals(2, Get0(a)); |
| 51 | |
| 52 | assertEquals(2, GetN(a, 0)); |
| 53 | assertEquals(0, GetN(a, 1)); |
| 54 | assertEquals(1, GetN(a, 2)); |
| 55 | |
| 56 | assertEquals(1, GetA0(a)); |
| 57 | |
| 58 | assertEquals(1, GetAN(a,0)); |
| 59 | assertEquals(2, GetAN(a,1)); |
| 60 | assertEquals(0, GetAN(a,2)); |
| 61 | |
| 62 | assertEquals(0, GetAAN(a,0)); |
| 63 | assertEquals(1, GetAAN(a,1)); |
| 64 | assertEquals(2, GetAAN(a,2)); |
| 65 | } |
| 66 | |
| 67 | |
| 68 | function Set07(a) { |
| 69 | a[0] = 7; |
| 70 | } |
| 71 | |
| 72 | function Set0V(a, v) { |
| 73 | a[0] = v; |
| 74 | } |
| 75 | |
| 76 | function SetN7(a, n) { |
| 77 | a[n] = 7; |
| 78 | } |
| 79 | |
| 80 | function SetNX(a, n, x) { |
| 81 | a[n] = x; |
| 82 | } |
| 83 | |
| 84 | function RunSetTests(a) { |
| 85 | Set07(a); |
| 86 | assertEquals(7, a[0]); |
| 87 | assertEquals(0, a[1]); |
| 88 | assertEquals(0, a[2]); |
| 89 | |
| 90 | Set0V(a, 1); |
| 91 | assertEquals(1, a[0]); |
| 92 | assertEquals(0, a[1]); |
| 93 | assertEquals(0, a[2]); |
| 94 | |
| 95 | SetN7(a, 2); |
| 96 | assertEquals(1, a[0]); |
| 97 | assertEquals(0, a[1]); |
| 98 | assertEquals(7, a[2]); |
| 99 | |
| 100 | SetNX(a, 1, 5); |
| 101 | assertEquals(1, a[0]); |
| 102 | assertEquals(5, a[1]); |
| 103 | assertEquals(7, a[2]); |
| 104 | |
| 105 | for (var i = 0; i < 3; i++) SetNX(a, i, 0); |
| 106 | assertEquals(0, a[0]); |
| 107 | assertEquals(0, a[1]); |
| 108 | assertEquals(0, a[2]); |
| 109 | } |
| 110 | |
| 111 | function RunArrayBoundsCheckTest() { |
| 112 | var g = [1,2,3]; |
| 113 | |
| 114 | function f(a, i) { a[i] = 42; } |
| 115 | |
| 116 | for (var i = 0; i < 100000; i++) { f(g, 0); } |
| 117 | |
| 118 | f(g, 4); |
| 119 | |
| 120 | assertEquals(42, g[0]); |
| 121 | assertEquals(42, g[4]); |
| 122 | } |
| 123 | |
| 124 | var a = [0,0,0]; |
| 125 | var o = {0: 0, 1: 0, 2: 0}; |
| 126 | for (var i = 0; i < 1000; i++) { |
| 127 | RunGetTests(); |
| 128 | RunSetTests(a); |
| 129 | RunSetTests(o); |
| 130 | } |
| 131 | |
| 132 | RunArrayBoundsCheckTest(); |