/*
 * GNU LESSER GENERAL PUBLIC LICENSE Copyright (C) 2006 The Lobo Project
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This library 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 this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * Contact info: lobochief@users.sourceforge.net
 */
/*
 * Created on Apr 17, 2005
 */
package com.nvarghese.beowulf.common.cobra.util;

import java.util.Iterator;

/**
 * @author J. H. S.
 */
public class ArrayUtilities {

	/**
	 * 
	 */
	private ArrayUtilities() {

		super();
	}

	public static Iterator iterator(final Object[] array, final int offset, final int length) {

		return new ArrayIterator(array, offset, length);
	}

	private static class ArrayIterator implements Iterator {

		private final Object[] array;
		private final int top;
		private int offset;

		public ArrayIterator(final Object[] array, final int offset, final int length) {

			this.array = array;
			this.offset = offset;
			this.top = offset + length;
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see java.util.Iterator#hasNext()
		 */
		public boolean hasNext() {

			return this.offset < this.top;
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see java.util.Iterator#next()
		 */
		public Object next() {

			return this.array[this.offset++];
		}

		/*
		 * (non-Javadoc)
		 * 
		 * @see java.util.Iterator#remove()
		 */
		public void remove() {

			throw new UnsupportedOperationException();
		}
	}
}