diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/SingleElementListIterator.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/SingleElementListIterator.java | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/SingleElementListIterator.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/SingleElementListIterator.java deleted file mode 100644 index 9363cd0be7..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/iterators/SingleElementListIterator.java +++ /dev/null @@ -1,98 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2005, 2009 Oracle. 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: - * Oracle - initial API and implementation - ******************************************************************************/ -package org.eclipse.jpt.common.utility.internal.iterators; - -import java.util.ListIterator; -import java.util.NoSuchElementException; -import org.eclipse.jpt.common.utility.internal.StringTools; - -/** - * A <code>SingleElementListIterator</code> holds a single element - * and returns it with the first call to {@link #next()}, at - * which point it will return <code>false</code> to any subsequent - * call to {@link #hasNext()}. Likewise, it will return <code>false</code> - * to a call to {@link #hasPrevious()} until a call to {@link #next()}, - * at which point a call to {@link #previous()} will return the - * single element. - * <p> - * A <code>SingleElementListIterator</code> is equivalent to the - * {@link ListIterator} returned by: - * {@link java.util.Collections#singletonList(Object element)}<code>.listIterator()</code> - * - * @param <E> the type of elements returned by the iterator - * - * @see org.eclipse.jpt.common.utility.internal.iterables.SingleElementListIterable - */ -public class SingleElementListIterator<E> - implements ListIterator<E> -{ - private final E element; - private boolean hasNext; - - - /** - * Construct a list iterator that returns only the specified element. - */ - public SingleElementListIterator(E element) { - super(); - this.element = element; - this.hasNext = true; - } - - public boolean hasNext() { - return this.hasNext; - } - - public E next() { - if (this.hasNext) { - this.hasNext = false; - return this.element; - } - throw new NoSuchElementException(); - } - - public int nextIndex() { - return this.hasNext ? 0 : 1; - } - - public boolean hasPrevious() { - return ! this.hasNext; - } - - public E previous() { - if (this.hasNext) { - throw new NoSuchElementException(); - } - this.hasNext = true; - return this.element; - } - - public int previousIndex() { - return this.hasNext ? -1 : 0; - } - - public void add(E e) { - throw new UnsupportedOperationException(); - } - - public void set(E e) { - throw new UnsupportedOperationException(); - } - - public void remove() { - throw new UnsupportedOperationException(); - } - - @Override - public String toString() { - return StringTools.buildToStringFor(this, this.element); - } - -} |