| /******************************************************************************* |
| * Copyright (c) 2000, 2015 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 Corporation - initial API and implementation |
| * James Blackburn (Broadcom Corp.) - ongoing development |
| *******************************************************************************/ |
| package org.eclipse.core.internal.utils; |
| |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| |
| /** |
| * An object that iterates over the elements of an array |
| */ |
| public class ArrayIterator<T> implements Iterator<T> { |
| T[] elements; |
| int index; |
| int lastElement; |
| |
| /** |
| * Returns new array enumeration over the given object array |
| */ |
| public ArrayIterator(T[] elements) { |
| this(elements, 0, elements.length - 1); |
| } |
| |
| /** |
| * Returns new array enumeration over the given object array |
| */ |
| public ArrayIterator(T[] elements, int firstElement, int lastElement) { |
| super(); |
| this.elements = elements; |
| index = firstElement; |
| this.lastElement = lastElement; |
| } |
| |
| /** |
| * Returns true if this enumeration contains more elements. |
| */ |
| @Override |
| public boolean hasNext() { |
| return elements != null && index <= lastElement; |
| } |
| |
| /** |
| * Returns the next element of this enumeration. |
| * @exception NoSuchElementException if no more elements exist. |
| */ |
| @Override |
| public T next() throws NoSuchElementException { |
| if (!hasNext()) |
| throw new NoSuchElementException(); |
| return elements[index++]; |
| } |
| |
| @Override |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| } |