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| 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 // TODO(ager): I'm not sure this is in accordance with the spec. At |
| 172 // the moment, any call to eval where eval is not bound in the global |
| 173 // context is treated as an indirect call to eval which means that the |
| 174 // global context is used and the global object is passed as the |
| 175 // receiver. |
| 176 outer_eval_conversion3(eval, 'object'); |
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