| /* gnu/regexp/CharIndexedCharArray.java |
| Copyright (C) 1998-2001, 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.regexp; |
| import java.io.Serializable; |
| |
| class CharIndexedCharArray implements CharIndexed, Serializable { |
| private char[] s; |
| private int anchor; |
| |
| CharIndexedCharArray(char[] str, int index) { |
| s = str; |
| anchor = index; |
| } |
| |
| public char charAt(int index) { |
| int pos = anchor + index; |
| return ((pos < s.length) && (pos >= 0)) ? s[pos] : OUT_OF_BOUNDS; |
| } |
| |
| public boolean isValid() { |
| return (anchor < s.length); |
| } |
| |
| public boolean move(int index) { |
| return ((anchor += index) < s.length); |
| } |
| } |