/*******************************************************************************
* Copyright (c) 2002, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Rational Software - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.parser;
import java.util.Iterator;
import java.util.NoSuchElementException;
public final class EmptyIterator<T> implements Iterator<T> {
public static final EmptyIterator<?> EMPTY_ITERATOR = new EmptyIterator<Object>();
@SuppressWarnings("unchecked")
public static <T> EmptyIterator<T> empty() {
return (EmptyIterator<T>) EMPTY_ITERATOR;
}
private EmptyIterator() {
}
/* (non-Javadoc)
* @see java.util.Iterator#hasNext()
*/
public final boolean hasNext() {
return false;
}
/* (non-Javadoc)
* @see java.util.Iterator#next()
*/
public final T next() {
throw new NoSuchElementException();
}
/* (non-Javadoc)
* @see java.util.Iterator#remove()
*/
public final void remove() {
throw new UnsupportedOperationException();
}
}