1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description("This page tests handling of parenthetical assertions."); 25 26 var regex1 = /(x)(?=\1)x/; 27 shouldBe("regex1.exec('xx')", "['xx','x']"); 28 29 var regex2 = /(.*?)a(?!(a+)b\2c)\2(.*)/; 30 shouldBe("regex2.exec('baaabaac')", "['baaabaac','ba',undefined,'abaac']"); 31 32 var regex3 = /(?=(a+?))(\1ab)/; 33 shouldBe("regex3.exec('aaab')", "['aab','a','aab']"); 34 35 var regex4 = /(?=(a+?))(\1ab)/; 36 shouldBe("regex4.exec('aaab')", "['aab','a','aab']"); 37 38 var regex5 = /^P([1-6])(?=\1)([1-6])$/; 39 shouldBe("regex5.exec('P11')", "['P11','1','1']"); 40 41 var regex6 = /(([a-c])b*?\2)*/; 42 shouldBe("regex6.exec('ababbbcbc')", "['ababb','bb','b']"); 43 44 var regex7 = /(x)(?=x)x/; 45 shouldBe("regex7.exec('xx')", "['xx','x']"); 46 47 var regex8 = /(x)(\1)/; 48 shouldBe("regex8.exec('xx')", "['xx','x','x']"); 49 50 var regex9 = /(x)(?=\1)x/; 51 shouldBeNull("regex9.exec('xy')"); 52 53 var regex10 = /(x)(?=x)x/; 54 shouldBeNull("regex10.exec('xy')"); 55 56 var regex11 = /(x)(\1)/; 57 shouldBeNull("regex11.exec('xy')"); 58 59 var regex12 = /(x)(?=\1)x/; 60 shouldBeNull("regex12.exec('x')"); 61 shouldBe("regex12.exec('xx')", "['xx','x']"); 62 shouldBe("regex12.exec('xxy')", "['xx','x']"); 63 64 var regex13 = /(x)zzz(?=\1)x/; 65 shouldBe("regex13.exec('xzzzx')", "['xzzzx','x']"); 66 shouldBe("regex13.exec('xzzzxy')", "['xzzzx','x']"); 67 68 var regex14 = /(a)\1(?=(b*c))bc/; 69 shouldBe("regex14.exec('aabc')", "['aabc','a','bc']"); 70 shouldBe("regex14.exec('aabcx')", "['aabc','a','bc']"); 71 72 var regex15 = /(a)a(?=(b*c))bc/; 73 shouldBe("regex15.exec('aabc')", "['aabc','a','bc']"); 74 shouldBe("regex15.exec('aabcx')", "['aabc','a','bc']"); 75 76 var regex16 = /a(?=(b*c))bc/; 77 shouldBeNull("regex16.exec('ab')"); 78 shouldBe("regex16.exec('abc')", "['abc','bc']"); 79 80 var regex17 = /(?=((?:ab)*))a/; 81 shouldBe("regex17.exec('ab')", "['a','ab']"); 82 shouldBe("regex17.exec('abc')", "['a','ab']"); 83 84 var regex18 = /(?=((?:xx)*))x/; 85 shouldBe("regex18.exec('x')", "['x','']"); 86 shouldBe("regex18.exec('xx')", "['x','xx']"); 87 shouldBe("regex18.exec('xxx')", "['x','xx']"); 88 89 var regex19 = /(?=((xx)*))x/; 90 shouldBe("regex19.exec('x')", "['x','',undefined]"); 91 shouldBe("regex19.exec('xx')", "['x','xx','xx']"); 92 shouldBe("regex19.exec('xxx')", "['x','xx','xx']"); 93 94 var regex20 = /(?=(xx))+x/; 95 shouldBeNull("regex20.exec('x')"); 96 shouldBe("regex20.exec('xx')", "['x','xx']"); 97 shouldBe("regex20.exec('xxx')", "['x','xx']"); 98 99 var regex21 = /(?=a+b)aab/; 100 shouldBe("regex21.exec('aab')", "['aab']"); 101 102 var regex22 = /(?!(u|m{0,}g+)u{1,}|2{2,}!1%n|(?!K|(?=y)|(?=ip))+?)(?=(?=(((?:7))*?)*?))p/m; 103 shouldBe("regex22.exec('55up')", "null"); 104 105 var regex23 = /(?=(a)b|c?)()*d/; 106 shouldBe("regex23.exec('ax')", "null"); 107 108 var regex24 = /(?=a|b?)c/; 109 shouldBe("regex24.exec('x')", "null"); 110
