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