63 lines
2.3 KiB
Java
63 lines
2.3 KiB
Java
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/* gnu/regexp/CharIndexedCharArray.java
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Copyright (C) 1998-2001, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.regexp;
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import java.io.Serializable;
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class CharIndexedCharArray implements CharIndexed, Serializable {
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private char[] s;
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private int anchor;
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CharIndexedCharArray(char[] str, int index) {
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s = str;
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anchor = index;
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}
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public char charAt(int index) {
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int pos = anchor + index;
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return ((pos < s.length) && (pos >= 0)) ? s[pos] : OUT_OF_BOUNDS;
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}
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public boolean isValid() {
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return (anchor < s.length);
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}
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public boolean move(int index) {
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return ((anchor += index) < s.length);
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}
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}
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