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1 // Copyright (c) 2014, the Dart project authors. All rights reserved. | |
2 // Copyright 2008 the V8 project authors. All rights reserved. | |
3 // Redistribution and use in source and binary forms, with or without | |
4 // modification, are permitted provided that the following conditions are | |
5 // met: | |
6 // | |
7 // * Redistributions of source code must retain the above copyright | |
8 // notice, this list of conditions and the following disclaimer. | |
9 // * Redistributions in binary form must reproduce the above | |
10 // copyright notice, this list of conditions and the following | |
11 // disclaimer in the documentation and/or other materials provided | |
12 // with the distribution. | |
13 // * Neither the name of Google Inc. nor the names of its | |
14 // contributors may be used to endorse or promote products derived | |
15 // from this software without specific prior written permission. | |
16 // | |
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
28 | |
29 /** | |
30 * @fileoverview Check that an initial ^ will result in a faster match fail. | |
31 */ | |
32 | |
33 import 'v8_regexp_utils.dart'; | |
34 import 'package:expect/expect.dart'; | |
35 | |
36 void main() { | |
37 var s = "foo"; | |
38 var i; | |
39 | |
40 for (i = 0; i < 18; i++) { | |
41 s = s + s; | |
42 } | |
43 | |
44 dynamic repeatRegexp(re) { | |
45 for (i = 0; i < 1000; i++) { | |
46 re.hasMatch(s); | |
47 } | |
48 } | |
49 | |
50 repeatRegexp(new RegExp(r"^bar")); | |
51 repeatRegexp(new RegExp(r"^foo|^bar|^baz")); | |
52 repeatRegexp(new RegExp(r"(^bar)")); | |
53 repeatRegexp(new RegExp(r"(?=^bar)\w+")); | |
54 } | |
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