/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements.  See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License.  You may obtain a copy of the License at * *     http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.apache.regexp;/** * Encapsulates char[] as CharacterIterator * * @author <a href="mailto:ales.novak@netbeans.com">Ales Novak</a> * @version CVS $Id: CharacterArrayCharacterIterator.java 518156 2007-03-14 14:31:26Z vgritsenko $ */public final class CharacterArrayCharacterIterator implements CharacterIterator{    /** encapsulated */    private final char[] src;    /** offset in the char array */    private final int off;    /** used portion of the array */    private final int len;    /** @param src - encapsulated String */    public CharacterArrayCharacterIterator(char[] src, int off, int len)    {        this.src = src;        this.off = off;        this.len = len;    }    /** @return a substring */    public String substring(int beginIndex, int endIndex)    {        if (endIndex > len) {            throw new IndexOutOfBoundsException("endIndex=" + endIndex                                                + "; sequence size=" + len);        }        if (beginIndex < 0 || beginIndex > endIndex) {            throw new IndexOutOfBoundsException("beginIndex=" + beginIndex                                                + "; endIndex=" + endIndex);        }        return new String(src, off + beginIndex, endIndex - beginIndex);    }    /** @return a substring */    public String substring(int beginIndex)    {        return substring(beginIndex, len);    }    /** @return a character at the specified position. */    public char charAt(int pos)    {        return src[off + pos];    }    /** @return <tt>true</tt> iff if the specified index is after the end of the character stream */    public boolean isEnd(int pos)    {        return (pos >= len);    }}