| // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion Match matchAsPrefix(String string, [int start = 0]) |
| /// Match this pattern against the start of string. |
| /// |
| /// If start is provided, it must be an integer in the range 0 .. string.length. |
| /// ... |
| /// @description Checks that if start is provided, it must be an integer |
| /// in the range 0 .. string.length. |
| /// @author sgrekhov@unipro.ru |
| |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| check("AE", "AEKFCD", -1, false, true); |
| check("(a|cd)+|ef", "AEKFCD", 7, false, true); |
| check(".+: gr(a|e)y", "color: grey", 100, false, false); |
| check("((a)|(ab))((c)|(bc))", "abc", 45, false, false); |
| check(r"^(a+)\1*,\1+$", "aaaaaaaaa,aaaaaa", -1, false, false); |
| check(r"^(a+?)\1*,\1+$", "aaaaaa,aaaaaaaaa", 112, false, false); |
| check("(z)((a+)?(b+)?(c))*", "zaacbbbcac", 22, false, false); |
| } |
| |
| void check(String pattern, String str, int start, bool multiLine, |
| bool ignoreCase) { |
| RegExp re = new RegExp(pattern, multiLine: multiLine, |
| caseSensitive: !ignoreCase); |
| Expect.throws(() { re.matchAsPrefix(str, start); }); |
| } |