Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Flags: --harmony-regexp-subclass |
| 6 | |
| 7 | "use strict"; |
| 8 | |
| 9 | function should_not_be_called() { |
| 10 | throw new Error("should not be called"); |
| 11 | } |
| 12 | |
| 13 | (function() { |
| 14 | var r = new RegExp("biep"); |
| 15 | assertTrue(r === RegExp(r)); |
| 16 | assertFalse(r === new RegExp(r)); |
| 17 | r[Symbol.match] = false; |
| 18 | Object.defineProperty(r, "source", {get: should_not_be_called}); |
| 19 | Object.defineProperty(r, "flags", {get: should_not_be_called}); |
| 20 | assertFalse(r === RegExp(r)); |
| 21 | })(); |
| 22 | |
| 23 | (function() { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 24 | let allow = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 25 | class A extends RegExp { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 26 | get source() { |
| 27 | if (!allow) throw new Error("should not be called"); |
| 28 | return super.source; |
| 29 | } |
| 30 | get flags() { |
| 31 | if (!allow) throw new Error("should not be called"); |
| 32 | return super.flags |
| 33 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 34 | } |
| 35 | |
| 36 | var r = new A("biep"); |
| 37 | var r2 = RegExp(r); |
| 38 | |
| 39 | assertFalse(r === r2); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 40 | allow = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 41 | assertEquals(r, r2); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 42 | allow = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 43 | assertTrue(A.prototype === r.__proto__); |
| 44 | assertTrue(RegExp.prototype === r2.__proto__); |
| 45 | |
| 46 | var r3 = RegExp(r); |
| 47 | assertFalse(r3 === r); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 48 | allow = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 49 | assertEquals(r3, r); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 50 | allow = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 51 | |
| 52 | var r4 = new A(r2); |
| 53 | assertFalse(r4 === r2); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 54 | allow = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 55 | assertEquals(r4, r2); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 56 | allow = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 57 | assertTrue(A.prototype === r4.__proto__); |
| 58 | |
| 59 | r[Symbol.match] = false; |
| 60 | var r5 = new A(r); |
| 61 | assertFalse(r5 === r); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 62 | allow = true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 63 | assertEquals(r5, r); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame^] | 64 | allow = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 65 | assertTrue(A.prototype === r5.__proto__); |
| 66 | })(); |
| 67 | |
| 68 | (function() { |
| 69 | var log = []; |
| 70 | var match = { |
| 71 | get source() { log.push("source"); return "biep"; }, |
| 72 | get flags() { log.push("flags"); return "i"; } |
| 73 | }; |
| 74 | Object.defineProperty(match, Symbol.match, |
| 75 | {get() { log.push("match"); return true; }}); |
| 76 | var r = RegExp(match); |
| 77 | assertEquals(["match", "source", "flags"], log); |
| 78 | assertFalse(r === match); |
| 79 | assertEquals(/biep/i, r); |
| 80 | })(); |
| 81 | |
| 82 | (function() { |
| 83 | var log = []; |
| 84 | var match = { |
| 85 | get source() { log.push("source"); return "biep"; }, |
| 86 | get flags() { log.push("flags"); return "i"; } |
| 87 | }; |
| 88 | Object.defineProperty(match, Symbol.match, |
| 89 | {get() { log.push("match"); return true; }}); |
| 90 | match.constructor = RegExp; |
| 91 | var r = RegExp(match); |
| 92 | assertEquals(["match"], log); |
| 93 | assertTrue(r === match); |
| 94 | })(); |
| 95 | |
| 96 | (function() { |
| 97 | var r = RegExp("biep", "i"); |
| 98 | r[Symbol.match] = false; |
| 99 | var r2 = RegExp(r, "g"); |
| 100 | assertFalse(r === r2); |
| 101 | assertEquals(/biep/i, r); |
| 102 | assertEquals(/biep/g, r2); |
| 103 | })(); |
| 104 | |
| 105 | (function() { |
| 106 | class A extends RegExp { |
| 107 | get ["constructor"]() { log.push("constructor"); return RegExp; } |
| 108 | } |
| 109 | var r = new A("biep"); |
| 110 | var log = []; |
| 111 | var r2 = RegExp(r); |
| 112 | assertEquals(["constructor"], log); |
| 113 | assertTrue(r === r2); |
| 114 | })(); |