001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.runtime.util;
020
021import java.util.Iterator;
022
023/**
024 * Iterator Implementation for a Object Array
025 */
026public final class ArrayIterator implements Iterator {
027        
028        private Object[] arr;
029        private int offset;
030        private int length;
031
032        /**
033         * constructor for the class
034         * @param arr Base Array
035         */
036        public ArrayIterator(Object[] arr) {
037                this.arr=arr;
038                this.offset=0;
039                this.length=arr.length;
040        }
041
042        public ArrayIterator(Object[] arr, int offset, int length) {
043                this.arr=arr;
044                this.offset=offset;
045                this.length=offset+length;
046                if(this.length>arr.length)this.length=arr.length;
047                
048        }
049
050        public ArrayIterator(Object[] arr, int offset) {
051                this.arr=arr;
052                this.offset=offset;
053                this.length=arr.length;
054                
055        }
056
057        @Override
058        public void remove() {
059                throw new UnsupportedOperationException("this operation is not suppored");
060        }
061
062        @Override
063        public boolean hasNext() {
064                return (length)>offset;
065        }
066
067        @Override
068        public Object next() {
069                return arr[offset++];
070        }
071        
072}