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 extend = function (d, b) { |
| 29 | function __() { this.constructor = d; } |
| 30 | __.prototype = b.prototype; |
| 31 | d.prototype = new __(); |
| 32 | }; |
| 33 | |
| 34 | var Car = (function (Super) { |
| 35 | var Car = function () { |
| 36 | var self = this; |
| 37 | |
| 38 | Super.call(self); |
| 39 | |
| 40 | Object.defineProperties(self, { |
| 41 | "make": { |
| 42 | enumerable: true, |
| 43 | configurable: true, |
| 44 | get: function () { |
| 45 | return "Ford"; |
| 46 | } |
| 47 | } |
| 48 | }); |
| 49 | |
| 50 | self.copy = function () { |
| 51 | throw new Error("Meant to be overriden"); |
| 52 | }; |
| 53 | |
| 54 | return self; |
| 55 | }; |
| 56 | |
| 57 | extend(Car, Super); |
| 58 | |
| 59 | return Car; |
| 60 | }(Object)); |
| 61 | |
| 62 | |
| 63 | var SuperCar = ((function (Super) { |
| 64 | var SuperCar = function (make) { |
| 65 | var self = this; |
| 66 | |
| 67 | Super.call(self); |
| 68 | |
| 69 | |
| 70 | Object.defineProperties(self, { |
| 71 | "make": { |
| 72 | enumerable: true, |
| 73 | configurable: true, |
| 74 | get: function () { |
| 75 | return make; |
| 76 | } |
| 77 | } |
| 78 | }); |
| 79 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 80 | // Convert self.copy from DATA_CONSTANT to DATA. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 81 | self.copy = function () { }; |
| 82 | |
| 83 | return self; |
| 84 | }; |
| 85 | extend(SuperCar, Super); |
| 86 | return SuperCar; |
| 87 | })(Car)); |
| 88 | |
| 89 | assertEquals("Ford", new Car().make); |
| 90 | assertEquals("Bugatti", new SuperCar("Bugatti").make); |
| 91 | assertEquals("Lambo", new SuperCar("Lambo").make); |
| 92 | assertEquals("Shelby", new SuperCar("Shelby").make); |