net.automatalib.commons.util.collections.TransformingIterator Maven / Gradle / Ivy

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Basic utility library containing several useful classes (e.g., a Pair class) to ease everyday programming.

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/* Copyright (C) 2013 TU Dortmund
 * This file is part of AutomataLib, http://www.automatalib.net/.
 * 
 * AutomataLib is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 3.0 as published by the Free Software Foundation.
 * 
 * AutomataLib 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with AutomataLib; if not, see
 * http://www.gnu.de/documents/lgpl.en.html.
 */
package net.automatalib.commons.util.collections;

import java.util.Iterator;

public abstract class TransformingIterator implements Iterator {
	
	private final Iterator iterator;
	
	protected abstract E transform(I internal);

	public TransformingIterator(Iterator iterator) {
		this.iterator = iterator;
	}

	@Override
	public boolean hasNext() {
		return iterator.hasNext();
	}

	@Override
	public E next() {
		I internal = iterator.next();
		return transform(internal);
	}

	@Override
	public void remove() {
		iterator.remove();
	}

}