| // Copyright (c) 2014, the Dart project authors. All rights reserved. |
| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // 1. Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // 2. Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in the |
| // documentation and/or other materials provided with the distribution. |
| // |
| // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY |
| // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // @dart = 2.9 |
| |
| import 'v8_regexp_utils.dart'; |
| import 'package:expect/expect.dart'; |
| |
| void main() { |
| description("This page tests handling of parenthetical assertions."); |
| |
| var regex1 = new RegExp(r"(x)(?=\1)x"); |
| shouldBe(regex1.firstMatch('xx'), ['xx', 'x']); |
| |
| var regex2 = new RegExp(r"(.*?)a(?!(a+)b\2c)\2(.*)"); |
| shouldBe(regex2.firstMatch('baaabaac'), ['baaabaac', 'ba', null, 'abaac']); |
| |
| var regex3 = new RegExp(r"(?=(a+?))(\1ab)"); |
| shouldBe(regex3.firstMatch('aaab'), ['aab', 'a', 'aab']); |
| |
| var regex4 = new RegExp(r"(?=(a+?))(\1ab)"); |
| shouldBe(regex4.firstMatch('aaab'), ['aab', 'a', 'aab']); |
| |
| var regex5 = new RegExp(r"^P([1-6])(?=\1)([1-6])$"); |
| shouldBe(regex5.firstMatch('P11'), ['P11', '1', '1']); |
| |
| var regex6 = new RegExp(r"(([a-c])b*?\2)*"); |
| shouldBe(regex6.firstMatch('ababbbcbc'), ['ababb', 'bb', 'b']); |
| |
| var regex7 = new RegExp(r"(x)(?=x)x"); |
| shouldBe(regex7.firstMatch('xx'), ['xx', 'x']); |
| |
| var regex8 = new RegExp(r"(x)(\1)"); |
| shouldBe(regex8.firstMatch('xx'), ['xx', 'x', 'x']); |
| |
| var regex9 = new RegExp(r"(x)(?=\1)x"); |
| shouldBeNull(regex9.firstMatch('xy')); |
| |
| var regex10 = new RegExp(r"(x)(?=x)x"); |
| shouldBeNull(regex10.firstMatch('xy')); |
| |
| var regex11 = new RegExp(r"(x)(\1)"); |
| shouldBeNull(regex11.firstMatch('xy')); |
| |
| var regex12 = new RegExp(r"(x)(?=\1)x"); |
| shouldBeNull(regex12.firstMatch('x')); |
| shouldBe(regex12.firstMatch('xx'), ['xx', 'x']); |
| shouldBe(regex12.firstMatch('xxy'), ['xx', 'x']); |
| |
| var regex13 = new RegExp(r"(x)zzz(?=\1)x"); |
| shouldBe(regex13.firstMatch('xzzzx'), ['xzzzx', 'x']); |
| shouldBe(regex13.firstMatch('xzzzxy'), ['xzzzx', 'x']); |
| |
| var regex14 = new RegExp(r"(a)\1(?=(b*c))bc"); |
| shouldBe(regex14.firstMatch('aabc'), ['aabc', 'a', 'bc']); |
| shouldBe(regex14.firstMatch('aabcx'), ['aabc', 'a', 'bc']); |
| |
| var regex15 = new RegExp(r"(a)a(?=(b*c))bc"); |
| shouldBe(regex15.firstMatch('aabc'), ['aabc', 'a', 'bc']); |
| shouldBe(regex15.firstMatch('aabcx'), ['aabc', 'a', 'bc']); |
| |
| var regex16 = new RegExp(r"a(?=(b*c))bc"); |
| shouldBeNull(regex16.firstMatch('ab')); |
| shouldBe(regex16.firstMatch('abc'), ['abc', 'bc']); |
| |
| var regex17 = new RegExp(r"(?=((?:ab)*))a"); |
| shouldBe(regex17.firstMatch('ab'), ['a', 'ab']); |
| shouldBe(regex17.firstMatch('abc'), ['a', 'ab']); |
| |
| var regex18 = new RegExp(r"(?=((?:xx)*))x"); |
| shouldBe(regex18.firstMatch('x'), ['x', '']); |
| shouldBe(regex18.firstMatch('xx'), ['x', 'xx']); |
| shouldBe(regex18.firstMatch('xxx'), ['x', 'xx']); |
| |
| var regex19 = new RegExp(r"(?=((xx)*))x"); |
| shouldBe(regex19.firstMatch('x'), ['x', '', null]); |
| shouldBe(regex19.firstMatch('xx'), ['x', 'xx', 'xx']); |
| shouldBe(regex19.firstMatch('xxx'), ['x', 'xx', 'xx']); |
| |
| var regex20 = new RegExp(r"(?=(xx))+x"); |
| shouldBeNull(regex20.firstMatch('x')); |
| shouldBe(regex20.firstMatch('xx'), ['x', 'xx']); |
| shouldBe(regex20.firstMatch('xxx'), ['x', 'xx']); |
| |
| var regex21 = new RegExp(r"(?=a+b)aab"); |
| shouldBe(regex21.firstMatch('aab'), ['aab']); |
| |
| var regex22 = new RegExp( |
| r"(?!(u|m{0,}g+)u{1,}|2{2,}!1%n|(?!K|(?=y)|(?=ip))+?)(?=(?=(((?:7))*?)*?))p", |
| multiLine: true); |
| shouldBeNull(regex22.firstMatch('55up')); |
| |
| var regex23 = new RegExp(r"(?=(a)b|c?)()*d"); |
| shouldBeNull(regex23.firstMatch('ax')); |
| |
| var regex24 = new RegExp(r"(?=a|b?)c"); |
| shouldBeNull(regex24.firstMatch('x')); |
| } |