001    // --- BEGIN LICENSE BLOCK ---
002    /* 
003     * Copyright (c) 2009, Mikio L. Braun
004     * All rights reserved.
005     * 
006     * Redistribution and use in source and binary forms, with or without
007     * modification, are permitted provided that the following conditions are
008     * met:
009     * 
010     *     * Redistributions of source code must retain the above copyright
011     *       notice, this list of conditions and the following disclaimer.
012     * 
013     *     * Redistributions in binary form must reproduce the above
014     *       copyright notice, this list of conditions and the following
015     *       disclaimer in the documentation and/or other materials provided
016     *       with the distribution.
017     * 
018     *     * Neither the name of the Technische Universit?t Berlin nor the
019     *       names of its contributors may be used to endorse or promote
020     *       products derived from this software without specific prior
021     *       written permission.
022     * 
023     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
024     * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
025     * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
026     * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
027     * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
028     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
029     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
030     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
031     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
032     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
033     * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
034     */
035    // --- END LICENSE BLOCK ---
036    
037    /*
038     * To change this template, choose Tools | Templates
039     * and open the template in the editor.
040     */
041    
042    package org.jblas.ranges;
043    
044    import org.jblas.*;
045    
046    /**
047     * A range over all available indices. Can be used to address whole columns or rows. Like
048     * the ":" index in matlab. Don't forget to call init() before using this range.
049     */
050    public class AllRange implements Range {
051        private int lower;
052        private int upper;
053        private int value;
054        private int counter;
055        
056        public AllRange() {}
057        
058        public void init(int l, int u) {
059            lower = l;
060            upper = u;
061            value = l;
062            counter = 0;
063        }
064        
065        public int length() {
066            return upper - lower;
067        }
068        
069        public int value() {
070            return value;
071        }
072        
073        public int index() {
074            return counter;
075        }
076        
077        public void next() {
078            counter++;
079            value++;
080        }
081        
082        public boolean hasMore() {
083            return value < upper;
084        }
085    }