01: /*
02: * gnu/regexp/RETokenRange.java
03: * Copyright (C) 1998 Wes Biggs
04: *
05: * This library is free software; you can redistribute it and/or modify
06: * it under the terms of the GNU Library General Public License as published
07: * by the Free Software Foundation; either version 2 of the License, or
08: * (at your option) any later version.
09: *
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 Library General Public License for more details.
14: *
15: * You should have received a copy of the GNU Library 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.
18: */
19:
20: package gnu.regexp;
21:
22: class RETokenRange extends REToken {
23: private char lo, hi;
24: private boolean insens;
25:
26: RETokenRange(int f_subIndex, char f_lo, char f_hi, boolean ins) {
27: super (f_subIndex);
28: lo = (insens = ins) ? Character.toLowerCase(f_lo) : f_lo;
29: hi = ins ? Character.toLowerCase(f_hi) : f_hi;
30: }
31:
32: int getMinimumLength() {
33: return 1;
34: }
35:
36: int[] match(CharIndexed input, int index, int eflags,
37: REMatch mymatch) {
38: char c = input.charAt(index);
39: if (c == CharIndexed.OUT_OF_BOUNDS)
40: return null;
41: if (insens)
42: c = Character.toLowerCase(c);
43: return ((c >= lo) && (c <= hi)) ? next(input, index + 1,
44: eflags, mymatch) : null;
45: }
46:
47: void dump(StringBuffer os) {
48: os.append(lo).append('-').append(hi);
49: }
50: }
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