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77 lines
2.4 KiB
77 lines
2.4 KiB
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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/*
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* Copyright 1999-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.sun.org.apache.regexp.internal;
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/**
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* Encapsulates char[] as CharacterIterator
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*
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* @author <a href="mailto:ales.novak@netbeans.com">Ales Novak</a>
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*/
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public final class CharacterArrayCharacterIterator implements CharacterIterator
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{
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/** encapsulated */
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private final char[] src;
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/** offset in the char array */
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private final int off;
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/** used portion of the array */
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private final int len;
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/** @param src - encapsulated String */
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public CharacterArrayCharacterIterator(char[] src, int off, int len)
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{
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this.src = src;
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this.off = off;
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this.len = len;
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}
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/** @return a substring */
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public String substring(int beginIndex, int endIndex)
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{
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if (endIndex > len) {
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throw new IndexOutOfBoundsException("endIndex=" + endIndex
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+ "; sequence size=" + len);
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}
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if (beginIndex < 0 || beginIndex > endIndex) {
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throw new IndexOutOfBoundsException("beginIndex=" + beginIndex
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+ "; endIndex=" + endIndex);
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}
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return new String(src, off + beginIndex, endIndex - beginIndex);
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}
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/** @return a substring */
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public String substring(int beginIndex)
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{
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return substring(beginIndex, len);
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}
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/** @return a character at the specified position. */
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public char charAt(int pos)
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{
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return src[off + pos];
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}
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/** @return <tt>true</tt> iff if the specified index is after the end of the character stream */
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public boolean isEnd(int pos)
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{
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return (pos >= len);
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}
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}
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