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/*
* 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.
*/
/* $Id$ */
package org.apache.fop.fo;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* Abstract base class for iterators that should iterate through a series
* of characters. Extends the java.util.Iterator interface with some
* additional functions useful for FOP's management of text.
*/
public abstract class CharIterator implements Iterator, Cloneable {
/**
* {@inheritDoc}
*/
public abstract boolean hasNext();
/**
* @return the character that is the next character in the collection
* @throws NoSuchElementException if there are no more characters (test for
* this condition with java.util.Iterator.hasNext()).
*/
public abstract char nextChar() throws NoSuchElementException;
/**
* {@inheritDoc}
*/
public Object next() throws NoSuchElementException {
return new Character(nextChar());
}
/**
* {@inheritDoc}
*/
public void remove() {
throw new UnsupportedOperationException();
}
/**
* Replace the current character managed by the iterator with a specified
* character?
* @param c character
*/
public void replaceChar(char c) {
}
/**
* {@inheritDoc}
*/
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException ex) {
return null;
}
}
}
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