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 // Flags: --allow-natives-syntax 29 // 30 // Check pops with various number of arguments. 31 (function() { 32 var a = []; 33 for (var i = 0; i < 7; i++) { 34 a = [7, 6, 5, 4, 3, 2, 1]; 35 36 assertEquals(1, a.pop(), "1st pop"); 37 assertEquals(6, a.length, "length 1st pop"); 38 39 assertEquals(2, a.pop(1), "2nd pop"); 40 assertEquals(5, a.length, "length 2nd pop"); 41 42 assertEquals(3, a.pop(1, 2), "3rd pop"); 43 assertEquals(4, a.length, "length 3rd pop"); 44 45 assertEquals(4, a.pop(1, 2, 3), "4th pop"); 46 assertEquals(3, a.length, "length 4th pop"); 47 48 assertEquals(5, a.pop(), "5th pop"); 49 assertEquals(2, a.length, "length 5th pop"); 50 51 assertEquals(6, a.pop(), "6th pop"); 52 assertEquals(1, a.length, "length 6th pop"); 53 54 assertEquals(7, a.pop(), "7th pop"); 55 assertEquals(0, a.length, "length 7th pop"); 56 57 assertEquals(undefined, a.pop(), "8th pop"); 58 assertEquals(0, a.length, "length 8th pop"); 59 60 assertEquals(undefined, a.pop(1, 2, 3), "9th pop"); 61 assertEquals(0, a.length, "length 9th pop"); 62 } 63 64 // Check that pop works on inherited properties. 65 for (var i = 0; i < 10 ;i++) { // Ensure ICs are stabilized. 66 Array.prototype[1] = 1; 67 Array.prototype[3] = 3; 68 Array.prototype[5] = 5; 69 Array.prototype[7] = 7; 70 Array.prototype[9] = 9; 71 a = [0,1,2,,4,,6,7,8,,]; 72 assertEquals(10, a.length, "inherit-initial-length"); 73 for (var j = 9; j >= 0; j--) { 74 assertEquals(j + 1, a.length, "inherit-pre-length-" + j); 75 assertTrue(j in a, "has property " + j); 76 var own = a.hasOwnProperty(j); 77 var inherited = Array.prototype.hasOwnProperty(j); 78 assertEquals(j, a.pop(), "inherit-pop"); 79 assertEquals(j, a.length, "inherit-post-length"); 80 assertFalse(a.hasOwnProperty(j), "inherit-deleted-own-" + j); 81 assertEquals(inherited, Array.prototype.hasOwnProperty(j), 82 "inherit-not-deleted-inherited" + j); 83 } 84 Array.prototype.length = 0; // Clean-up. 85 } 86 87 // Check that pop works on inherited properties for 88 // arrays with array prototype. 89 for (var i = 0; i < 10 ;i++) { // Ensure ICs are stabilized. 90 var array_proto = []; 91 array_proto[1] = 1; 92 array_proto[3] = 3; 93 array_proto[5] = 5; 94 array_proto[7] = 7; 95 array_proto[9] = 9; 96 a = [0,1,2,,4,,6,7,8,,]; 97 a.__proto__ = array_proto; 98 assertEquals(10, a.length, "array_proto-inherit-initial-length"); 99 for (var j = 9; j >= 0; j--) { 100 assertEquals(j + 1, a.length, "array_proto-inherit-pre-length-" + j); 101 assertTrue(j in a, "array_proto-has property " + j); 102 var own = a.hasOwnProperty(j); 103 var inherited = array_proto.hasOwnProperty(j); 104 assertEquals(j, a.pop(), "array_proto-inherit-pop"); 105 assertEquals(j, a.length, "array_proto-inherit-post-length"); 106 assertFalse(a.hasOwnProperty(j), "array_proto-inherit-deleted-own-" + j); 107 assertEquals(inherited, array_proto.hasOwnProperty(j), 108 "array_proto-inherit-not-deleted-inherited" + j); 109 } 110 } 111 112 // Check that pop works on inherited properties for 113 // arrays with array prototype. 114 })(); 115 116 // Test the case of not JSArray receiver. 117 // Regression test for custom call generators, see issue 684. 118 (function() { 119 var a = []; 120 for (var i = 0; i < 100; i++) a.push(i); 121 var x = {__proto__: a}; 122 for (var i = 0; i < 100; i++) { 123 assertEquals(99 - i, x.pop(), i + 'th iteration'); 124 } 125 })(); 126 127 (function () { 128 function f(a, deopt) { 129 var v = a.pop() ? 1 : 2; 130 if (deopt) %DeoptimizeFunction(f); 131 return v; 132 } 133 134 var a = [true, true, true, true] 135 assertEquals(1, f(a, false)); 136 assertEquals(1, f(a, false)); 137 %OptimizeFunctionOnNextCall(f); 138 assertEquals(1, f(a, false)); 139 assertEquals(1, f(a, true)); 140 })(); 141
