1 // Copyright 2008 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 function CheckMatch(re, str, matches) { 29 assertEquals(matches.length > 0, re.test(str)); 30 var result = str.match(re); 31 if (matches.length > 0) { 32 assertEquals(matches.length, result.length); 33 var lastExpected; 34 var lastFrom; 35 var lastLength; 36 for (var idx = 0; idx < matches.length; idx++) { 37 var from = matches[idx][0]; 38 var length = matches[idx][1]; 39 var expected = str.substr(from, length); 40 var name = str + "[" + from + ".." + (from+length) + "]"; 41 assertEquals(expected, result[idx], name); 42 if (re.global || idx == 0) { 43 lastExpected = expected; 44 lastFrom = from; 45 lastLength = length; 46 } 47 } 48 assertEquals(lastExpected, RegExp.lastMatch, "lastMatch"); 49 assertEquals(str.substr(0, lastFrom), RegExp.leftContext, "leftContext"); 50 assertEquals( 51 str.substr(lastFrom + lastLength), RegExp.rightContext, "rightContext"); 52 } else { 53 assertTrue(result === null); 54 } 55 } 56 57 CheckMatch(/abc/, "xxxabcxxxabcxxx", [[3, 3]]); 58 CheckMatch(/abc/g, "xxxabcxxxabcxxx", [[3, 3], [9, 3]]); 59 CheckMatch(/abc/, "xxxabababcxxxabcxxx", [[7, 3]]); 60 CheckMatch(/abc/g, "abcabcabc", [[0, 3], [3, 3], [6, 3]]); 61 CheckMatch(/aba/g, "ababababa", [[0, 3], [4, 3]]); 62 CheckMatch(/foo/g, "ofooofoooofofooofo", [[1, 3], [5, 3], [12, 3]]); 63 CheckMatch(/foobarbaz/, "xx", []); 64 CheckMatch(new RegExp(""), "xxx", [[0, 0]]); 65 CheckMatch(/abc/, "abababa", []); 66 67 assertEquals("xxxdefxxxdefxxx", "xxxabcxxxabcxxx".replace(/abc/g, "def")); 68 assertEquals("o-o-oofo-ofo", "ofooofoooofofooofo".replace(/foo/g, "-")); 69 assertEquals("deded", "deded".replace(/x/g, "-")); 70 assertEquals("-a-b-c-d-e-f-", "abcdef".replace(new RegExp("", "g"), "-")); 71 72 CheckMatch(/a(.)/, "xyzzyabxyzzzyacxyzzy", [[5, 2], [6, 1]]); 73 CheckMatch(/a(.)/g, "xyzzyabxyzzyacxyzzy", [[5, 2], [12, 2]]); 74 75 CheckMatch(/a|(?:)/g, "aba", [[0, 1], [1, 0], [2, 1], [3, 0]]); 76 CheckMatch(/a|(?:)/g, "baba", [[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]); 77 CheckMatch(/a|(?:)/g, "bab", [[0, 0], [1, 1], [2, 0], [3, 0]]);
