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(); 133
