Source code: com/memoire/re/RECharIndexedString.java
1
2
3 package com.memoire.re;
4 import com.memoire.re.*;
5
6 /*
7 * gnu/regexp/RECharIndexedString.java
8 * Copyright (C) 1998 Wes Biggs
9 *
10 * This library is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU Library General Public License as published
12 * by the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Library General Public License for more details.
19 *
20 * You should have received a copy of the GNU Library General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25
26 class RECharIndexedString implements RECharIndexed {
27 private String s;
28 private int m_index;
29
30 RECharIndexedString(String str, int index) {
31 s = str;
32 m_index = index;
33 }
34
35 public char charAt(int index) {
36 return ((m_index + index) < s.length()) ? s.charAt(m_index + index) : RECharIndexed.OUT_OF_BOUNDS;
37 }
38
39 public boolean isValid() {
40 return (m_index < s.length());
41 }
42
43 public boolean move(int index) {
44 return ((m_index += index) < s.length());
45 }
46 }