1 // Copyright 2011 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 var y = 3; 31 32 function get_y() { return this.y; } 33 function strict_get_y() { "use strict"; return this.y; } 34 35 // Test calls to strict mode function as methods. 36 for (var i = 0; i < 10; i++) assertEquals(3, strict_get_y.call(this)); 37 var o = { y: 42 }; 38 for (var i = 0; i < 10; i++) assertEquals(42, strict_get_y.call(o)); 39 40 // Test calls to strict mode function with implicit receiver. 41 function g() { 42 var exception = false; 43 try { strict_get_y(); } catch(e) { exception = true; } 44 assertTrue(exception); 45 } 46 for (var i = 0; i < 3; i++) g(); 47 48 // Test calls to local strict mode function with implicit receiver. 49 function local_function_test() { 50 function get_y() { return this.y; } 51 function strict_get_y() { "use strict"; return this.y; } 52 assertEquals(3, get_y()); 53 assertEquals(3, get_y(23)); 54 var exception = false; 55 try { 56 strict_get_y(); 57 } catch(e) { 58 exception = true; 59 } 60 assertTrue(exception); 61 } 62 63 for (var i = 0; i < 10; i++) { 64 local_function_test(); 65 } 66 67 // Test call to catch variable strict-mode function. Implicit 68 // receiver. 69 var exception = false; 70 try { 71 throw strict_get_y; 72 } catch(f) { 73 try { 74 f(); 75 } catch(e) { 76 exception = true; 77 } 78 assertTrue(exception); 79 } 80 81 82 // Test calls to strict-mode function with the object from a with 83 // statement as the receiver. 84 with(this) { 85 assertEquals(3, strict_get_y()); 86 assertEquals(3, strict_get_y(32)); 87 } 88 89 var o = { y: 27 }; 90 o.f = strict_get_y; 91 with(o) { 92 assertEquals(27, f()); 93 assertEquals(27, f(23)); 94 } 95 96 97 // Check calls to eval within a function with 'undefined' as receiver. 98 function implicit_receiver_eval() { 99 "use strict"; 100 return eval("this"); 101 } 102 103 assertEquals(void 0, implicit_receiver_eval()); 104 assertEquals(void 0, implicit_receiver_eval(32)); 105 106 107 // Strict mode function to get inlined. 108 function strict_return_receiver() { 109 "use strict"; 110 return this; 111 } 112 113 // Inline with implicit receiver. 114 function g() { 115 return strict_return_receiver(); 116 } 117 118 for (var i = 0; i < 5; i++) { 119 assertEquals(void 0, g()); 120 assertEquals(void 0, g(42)); 121 } 122 %OptimizeFunctionOnNextCall(g); 123 assertEquals(void 0, g(42)); 124 assertEquals(void 0, g()); 125 126 // Inline with explicit receiver. 127 function g2() { 128 var o = {}; 129 o.f = strict_return_receiver; 130 return o.f(); 131 } 132 133 for (var i = 0; i < 5; i++) { 134 assertTrue(typeof g2() == "object"); 135 assertTrue(typeof g2(42) == "object"); 136 } 137 %OptimizeFunctionOnNextCall(g2); 138 assertTrue(typeof g2() == "object"); 139 assertTrue(typeof g2(42) == "object"); 140 141 // Test calls of aliased eval. 142 function outer_eval_receiver() { 143 var eval = function() { return this; } 144 function inner_strict() { 145 "use strict"; 146 assertEquals('object', typeof eval()); 147 } 148 inner_strict(); 149 } 150 outer_eval_receiver(); 151 152 function outer_eval_conversion3(eval, expected) { 153 function inner_strict() { 154 "use strict"; 155 var x = eval("this"); 156 assertEquals(expected, typeof x); 157 } 158 inner_strict(); 159 } 160 161 function strict_return_this() { "use strict"; return this; } 162 function return_this() { return this; } 163 function strict_eval(s) { "use strict"; return eval(s); } 164 function non_strict_eval(s) { return eval(s); } 165 166 outer_eval_conversion3(strict_return_this, 'undefined'); 167 outer_eval_conversion3(return_this, 'object'); 168 outer_eval_conversion3(strict_eval, 'undefined'); 169 outer_eval_conversion3(non_strict_eval, 'object'); 170 171 outer_eval_conversion3(eval, 'undefined'); 172 173 function test_constant_function() { 174 var o = { f: function() { "use strict"; return this; } }; 175 this.__proto__ = o; 176 for (var i = 0; i < 10; i++) assertEquals(void 0, f()); 177 } 178 test_constant_function(); 179 180 function test_field() { 181 var o = { }; 182 o.f = function() {}; 183 o.f = function() { "use strict"; return this; }; 184 this.__proto__ = o; 185 for (var i = 0; i < 10; i++) assertEquals(void 0, f()); 186 } 187 test_field(); 188
