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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 function CheckStrictMode(code, exception) { |
| 29 assertDoesNotThrow(code); |
| 30 assertThrows("'use strict';\n" + code, exception); |
| 31 assertThrows('"use strict";\n' + code, exception); |
| 32 assertDoesNotThrow("\ |
| 33 function outer() {\ |
| 34 function inner() {\n" |
| 35 + code + |
| 36 "\n}\ |
| 37 }"); |
| 38 assertThrows("\ |
| 39 function outer() {\ |
| 40 'use strict';\ |
| 41 function inner() {\n" |
| 42 + code + |
| 43 "\n}\ |
| 44 }", exception); |
| 45 } |
| 46 |
| 47 // Incorrect 'use strict' directive. |
| 48 function UseStrictEscape() { |
| 49 "use\\x20strict"; |
| 50 with ({}) {}; |
| 51 } |
| 52 |
| 53 // 'use strict' in non-directive position. |
| 54 function UseStrictNonDirective() { |
| 55 void(0); |
| 56 "use strict"; |
| 57 with ({}) {}; |
| 58 } |
| 59 |
| 60 // Multiple directives, including "use strict". |
| 61 assertThrows('\ |
| 62 "directive 1";\ |
| 63 "another directive";\ |
| 64 "use strict";\ |
| 65 "directive after strict";\ |
| 66 "and one more";\ |
| 67 with({}) {}', SyntaxError); |
| 68 |
| 69 // 'with' disallowed in strict mode. |
| 70 CheckStrictMode("with({}) {}", SyntaxError); |
| 71 |
| 72 // Function named 'eval'. |
| 73 CheckStrictMode("function eval() {}", SyntaxError) |
| 74 |
| 75 // Function named 'arguments'. |
| 76 CheckStrictMode("function arguments() {}", SyntaxError) |
| 77 |
| 78 // Function parameter named 'eval'. |
| 79 //CheckStrictMode("function foo(a, b, eval, c, d) {}", SyntaxError) |
| 80 |
| 81 // Function parameter named 'arguments'. |
| 82 //CheckStrictMode("function foo(a, b, arguments, c, d) {}", SyntaxError) |
| 83 |
| 84 // Property accessor parameter named 'eval'. |
| 85 //CheckStrictMode("var o = { set foo(eval) {} }", SyntaxError) |
| 86 |
| 87 // Property accessor parameter named 'arguments'. |
| 88 //CheckStrictMode("var o = { set foo(arguments) {} }", SyntaxError) |
| 89 |
| 90 // Duplicate function parameter name. |
| 91 //CheckStrictMode("function foo(a, b, c, d, b) {}", SyntaxError) |
| 92 |
| 93 // catch(eval) |
| 94 CheckStrictMode("try{}catch(eval){};", SyntaxError) |
| 95 |
| 96 // catch(arguments) |
| 97 CheckStrictMode("try{}catch(arguments){};", SyntaxError) |
| 98 |
| 99 // var eval |
| 100 CheckStrictMode("var eval;", SyntaxError) |
| 101 |
| 102 // var arguments |
| 103 CheckStrictMode("var arguments;", SyntaxError) |
| 104 |
| 105 // Strict mode applies to the function in which the directive is used.. |
| 106 //assertThrows('\ |
| 107 //function foo(eval) {\ |
| 108 // "use strict";\ |
| 109 //}', SyntaxError); |
| 110 |
| 111 // Strict mode doesn't affect the outer stop of strict code. |
| 112 function NotStrict(eval) { |
| 113 function Strict() { |
| 114 "use strict"; |
| 115 } |
| 116 with ({}) {}; |
| 117 } |
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