Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 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 | var CheckStringReceiver = function() { |
| 29 | "use strict"; |
| 30 | // Receivers of strict functions are not coerced. |
| 31 | assertEquals("string", typeof this); |
| 32 | }; |
| 33 | |
| 34 | var CheckNumberReceiver = function() { |
| 35 | "use strict"; |
| 36 | // Receivers of strict functions are not coerced. |
| 37 | assertEquals("number", typeof this); |
| 38 | }; |
| 39 | |
| 40 | var CheckUndefinedReceiver = function() { |
| 41 | "use strict"; |
| 42 | // Receivers of strict functions are not coerced. |
| 43 | assertEquals("undefined", String(this)); |
| 44 | }; |
| 45 | |
| 46 | var CheckNullReceiver = function() { |
| 47 | "use strict"; |
| 48 | // Receivers of strict functions are not coerced. |
| 49 | assertEquals("null", String(this)); |
| 50 | }; |
| 51 | |
| 52 | var CheckCoersion = function() { |
| 53 | // Receivers of non-strict functions are coerced to objects. |
| 54 | assertEquals("object", typeof this); |
| 55 | }; |
| 56 | |
| 57 | |
| 58 | function strict_mode() { |
| 59 | "use strict"; |
| 60 | CheckStringReceiver.call("foo"); |
| 61 | CheckNumberReceiver.call(42); |
| 62 | CheckUndefinedReceiver.call(undefined); |
| 63 | CheckNullReceiver.call(null); |
| 64 | [1].forEach(CheckStringReceiver, "foo"); |
| 65 | [2].every(CheckStringReceiver, "foo"); |
| 66 | [3].filter(CheckStringReceiver, "foo"); |
| 67 | [4].some(CheckNumberReceiver, 42); |
| 68 | [5].map(CheckNumberReceiver, 42); |
| 69 | |
| 70 | CheckCoersion.call("foo"); |
| 71 | CheckCoersion.call(42); |
| 72 | CheckCoersion.call(undefined); |
| 73 | CheckCoersion.call(null); |
| 74 | [1].forEach(CheckCoersion, "foo"); |
| 75 | [2].every(CheckCoersion, "foo"); |
| 76 | [3].filter(CheckCoersion, "foo"); |
| 77 | [4].some(CheckCoersion, 42); |
| 78 | [5].map(CheckCoersion, 42); |
| 79 | }; |
| 80 | strict_mode(); |
| 81 | |
| 82 | function sloppy_mode() { |
| 83 | CheckStringReceiver.call("foo"); |
| 84 | CheckNumberReceiver.call(42); |
| 85 | CheckUndefinedReceiver.call(undefined); |
| 86 | CheckNullReceiver.call(null); |
| 87 | [1].forEach(CheckStringReceiver, "foo"); |
| 88 | [2].every(CheckStringReceiver, "foo"); |
| 89 | [3].filter(CheckStringReceiver, "foo"); |
| 90 | [4].some(CheckNumberReceiver, 42); |
| 91 | [5].map(CheckNumberReceiver, 42); |
| 92 | |
| 93 | CheckCoersion.call("foo"); |
| 94 | CheckCoersion.call(42); |
| 95 | CheckCoersion.call(undefined); |
| 96 | CheckCoersion.call(null); |
| 97 | [1].forEach(CheckCoersion, "foo"); |
| 98 | [2].every(CheckCoersion, "foo"); |
| 99 | [3].filter(CheckCoersion, "foo"); |
| 100 | [4].some(CheckCoersion, 42); |
| 101 | [5].map(CheckCoersion, 42); |
| 102 | }; |
| 103 | sloppy_mode(); |