2 * gnu/regexp/RETokenBackRef.java
3 * Copyright (C) 1998-2001 Wes Biggs
5 * This library is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License as published
7 * by the Free Software Foundation; either version 2.1 of the License, or
8 * (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 final class RETokenBackRef extends REToken {
24 private boolean insens;
26 RETokenBackRef(int subIndex, int num, boolean insens) {
32 // should implement getMinimumLength() -- any ideas?
34 boolean match(CharIndexed input, REMatch mymatch) {
36 b = mymatch.start[num];
38 if ((b==-1)||(e==-1)) return false; // this shouldn't happen, but...
39 for (int i=b; i<e; i++) {
40 if (input.charAt(mymatch.index+i-b) != input.charAt(i)) {
45 return next(input, mymatch);
48 void dump(StringBuffer os) {
49 os.append('\\').append(num);