Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 171 | outer_eval_conversion3(eval, 'undefined'); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 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(); |