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
042package org.jblas.ranges;
043
044/**
045 * A PointRange is a range which only has a single point.
046 */
047public class PointRange implements Range {
048    private int value;
049    private boolean consumed; 
050
051    /** Construct a new PointRange with the one given index. */
052    public PointRange(int v) {
053        value = v;
054    }
055    
056    public void init(int l, int u) {
057        consumed = false;
058    }
059
060    public int length() {
061        return 1;
062    }
063    
064    public int value() {
065        return value;
066    }
067    
068    public int index() {
069        return 0;
070    }
071    
072    public void next() {
073        consumed = true;
074    }
075    
076    public boolean hasMore() {
077        return !consumed;
078    }
079}