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| 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() { |
| 24 class A extends RegExp { |
| 25 get source() { throw new Error("should not be called") } |
| 26 get flags() { throw new Error("should not be called") } |
| 27 } |
| 28 |
| 29 var r = new A("biep"); |
| 30 var r2 = RegExp(r); |
| 31 |
| 32 assertFalse(r === r2); |
| 33 assertEquals(r, r2); |
| 34 assertTrue(A.prototype === r.__proto__); |
| 35 assertTrue(RegExp.prototype === r2.__proto__); |
| 36 |
| 37 var r3 = RegExp(r); |
| 38 assertFalse(r3 === r); |
| 39 assertEquals(r3, r); |
| 40 |
| 41 var r4 = new A(r2); |
| 42 assertFalse(r4 === r2); |
| 43 assertEquals(r4, r2); |
| 44 assertTrue(A.prototype === r4.__proto__); |
| 45 |
| 46 r[Symbol.match] = false; |
| 47 var r5 = new A(r); |
| 48 assertFalse(r5 === r); |
| 49 assertEquals(r5, r); |
| 50 assertTrue(A.prototype === r5.__proto__); |
| 51 })(); |
| 52 |
| 53 (function() { |
| 54 var log = []; |
| 55 var match = { |
| 56 get source() { log.push("source"); return "biep"; }, |
| 57 get flags() { log.push("flags"); return "i"; } |
| 58 }; |
| 59 Object.defineProperty(match, Symbol.match, |
| 60 {get() { log.push("match"); return true; }}); |
| 61 var r = RegExp(match); |
| 62 assertEquals(["match", "source", "flags"], log); |
| 63 assertFalse(r === match); |
| 64 assertEquals(/biep/i, r); |
| 65 })(); |
| 66 |
| 67 (function() { |
| 68 var log = []; |
| 69 var match = { |
| 70 get source() { log.push("source"); return "biep"; }, |
| 71 get flags() { log.push("flags"); return "i"; } |
| 72 }; |
| 73 Object.defineProperty(match, Symbol.match, |
| 74 {get() { log.push("match"); return true; }}); |
| 75 match.constructor = RegExp; |
| 76 var r = RegExp(match); |
| 77 assertEquals(["match"], log); |
| 78 assertTrue(r === match); |
| 79 })(); |
| 80 |
| 81 (function() { |
| 82 var r = RegExp("biep", "i"); |
| 83 r[Symbol.match] = false; |
| 84 var r2 = RegExp(r, "g"); |
| 85 assertFalse(r === r2); |
| 86 assertEquals(/biep/i, r); |
| 87 assertEquals(/biep/g, r2); |
| 88 })(); |
| 89 |
| 90 (function() { |
| 91 class A extends RegExp { |
| 92 get ["constructor"]() { log.push("constructor"); return RegExp; } |
| 93 } |
| 94 var r = new A("biep"); |
| 95 var log = []; |
| 96 var r2 = RegExp(r); |
| 97 assertEquals(["constructor"], log); |
| 98 assertTrue(r === r2); |
| 99 })(); |
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