1 // Copyright 2009 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 /** 29 * @fileoverview Test String.prototype.match 30 */ 31 32 33 function testMatch(name, input, regexp, result, captures, from, to) { 34 var matchResult = input.match(regexp); 35 assertEquals(result, matchResult, name + "-match"); 36 37 var match = input.substring(from, to); 38 var preMatch = input.substring(0, from); 39 var postMatch = input.substring(to); 40 var lastParen = captures.length > 0 ? captures[captures.length - 1] : ""; 41 42 if (regexp.global) { 43 // Returns array of matched strings. 44 var lastMatch = matchResult[matchResult.length - 1]; 45 assertEquals(match, lastMatch, name + "-match-string_g"); 46 } else { 47 // Returns array of match and captures. 48 assertEquals(match, matchResult[0], name + "-match-string"); 49 assertEquals(captures.length + 1, matchResult.length, name + "-cap-return"); 50 for (var i = 1; i < matchResult.length; i++) { 51 assertEquals(captures[i - 1], matchResult[i], name + "-cap-return-" + i); 52 } 53 } 54 55 assertEquals(match, RegExp["$&"], name + "-$&"); 56 assertEquals(match, RegExp.lastMatch, name + "-lastMatch"); 57 58 assertEquals(undefined, RegExp.$0, name + "-nocapture-10"); 59 for (var i = 1; i <= 9; i++) { 60 if (i <= captures.length) { 61 assertEquals(captures[i - 1], RegExp["$" + i], name + "-capture-" + i); 62 } else { 63 assertEquals("", RegExp["$" + i], name + "-nocapture-" + i); 64 } 65 } 66 assertEquals(undefined, RegExp.$10, name + "-nocapture-10"); 67 68 assertEquals(input, RegExp.input, name + "-input"); 69 assertEquals(input, RegExp.$_, name + "-$_"); 70 71 assertEquals(preMatch, RegExp["$`"], name + "-$`"); 72 assertEquals(preMatch, RegExp.leftContext, name + "-leftContex"); 73 74 assertEquals(postMatch, RegExp["$'"], name + "-$'"); 75 assertEquals(postMatch, RegExp.rightContext, name + "-rightContex"); 76 77 assertEquals(lastParen, RegExp["$+"], name + "-$+"); 78 assertEquals(lastParen, RegExp.lastParen, name + "-lastParen"); 79 80 } 81 82 83 var stringSample = "A man, a plan, a canal: Panama"; 84 var stringSample2 = "Argle bargle glop glyf!"; 85 var stringSample3 = "abcdefghijxxxxxxxxxx"; 86 87 88 // Non-capturing, non-global regexp. 89 90 var re_nog = /\w+/; 91 92 testMatch("Nonglobal", stringSample, re_nog, 93 ["A"], 94 [], 0, 1); 95 96 97 re_nog.lastIndex = 2; 98 99 testMatch("Nonglobal-ignore-lastIndex", stringSample, re_nog, 100 ["A"], 101 [], 0, 1); 102 103 104 // Capturing non-global regexp. 105 106 var re_multicap = /(.)(.)(.)(.)(.)(.)(.)(.)(.)(.)/; 107 testMatch("Capture-Nonglobal", stringSample3, re_multicap, 108 ["abcdefghij", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j"], 109 ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"], 0, 10); 110 111 112 // Global regexp (also check that capture from before are cleared) 113 114 var re = /\w+/g; 115 testMatch("Global", stringSample2, re, 116 ["Argle", "bargle", "glop", "glyf"], [], 18, 22); 117 118 re.lastIndex = 10; 119 120 testMatch("Global-ignore-lastIndex", stringSample2, re, 121 ["Argle", "bargle", "glop", "glyf"], [], 18, 22); 122 123 124 // Capturing global regexp 125 126 var re_cap = /\w(\w*)/g; 127 128 testMatch("Capture-Global", stringSample, re_cap, 129 ["A", "man", "a", "plan", "a", "canal", "Panama"], 130 ["anama"], 24, 30); 131 132 133 // Atom, non-global 134 135 var re_atom = /an/; 136 137 testMatch("Atom", stringSample, re_atom, 138 ["an"], 139 [], 3, 5); 140 141 142 // Atom, global 143 144 var re_atomg = /an/g; 145 146 testMatch("Global-Atom", stringSample, re_atomg, 147 ["an", "an", "an", "an"], 148 [], 25, 27); 149
