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
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.
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.
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);
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;
48 assertEquals(lastExpected, RegExp.lastMatch, "lastMatch");
49 assertEquals(str.substr(0, lastFrom), RegExp.leftContext, "leftContext");
51 str.substr(lastFrom + lastLength), RegExp.rightContext, "rightContext");
53 assertTrue(result === null);
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", []);
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"), "-"));
72 CheckMatch(/a(.)/, "xyzzyabxyzzzyacxyzzy", [[5, 2], [6, 1]]);
73 CheckMatch(/a(.)/g, "xyzzyabxyzzyacxyzzy", [[5, 2], [12, 2]]);
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]]);