/jEdit/tags/jedit-4-0-pre5/gnu/regexp/RETokenBackRef.java
Java | 53 lines | 26 code | 8 blank | 19 comment | 4 complexity | 55166ce7fb8a52ade317b6a96e19242a MD5 | raw file
Possible License(s): BSD-3-Clause, AGPL-1.0, Apache-2.0, LGPL-2.0, LGPL-3.0, GPL-2.0, CC-BY-SA-3.0, LGPL-2.1, GPL-3.0, MPL-2.0-no-copyleft-exception, IPL-1.0
- /*
- * gnu/regexp/RETokenBackRef.java
- * Copyright (C) 1998-2001 Wes Biggs
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- package gnu.regexp;
- final class RETokenBackRef extends REToken {
- private int num;
- private boolean insens;
-
- RETokenBackRef(int subIndex, int num, boolean insens) {
- super(subIndex);
- this.num = num;
- this.insens = insens;
- }
- // should implement getMinimumLength() -- any ideas?
- boolean match(CharIndexed input, REMatch mymatch) {
- int b,e;
- b = mymatch.start[num];
- e = mymatch.end[num];
- if ((b==-1)||(e==-1)) return false; // this shouldn't happen, but...
- for (int i=b; i<e; i++) {
- if (input.charAt(mymatch.index+i-b) != input.charAt(i)) {
- return false;
- }
- }
- mymatch.index += e-b;
- return next(input, mymatch);
- }
-
- void dump(StringBuffer os) {
- os.append('\\').append(num);
- }
- }