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 Universität 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  /**
052   * Construct a new PointRange with the one given index.
053   */
054  public PointRange(int v) {
055    value = v;
056  }
057
058  public void init(int l, int u) {
059    consumed = false;
060  }
061
062  public int length() {
063    return 1;
064  }
065
066  public int value() {
067    return value;
068  }
069
070  public int index() {
071    return 0;
072  }
073
074  public void next() {
075    consumed = true;
076  }
077
078  public boolean hasMore() {
079    return !consumed;
080  }
081
082  @Override
083  public String toString() {
084    return String.format("<PointRange at=%d>", value);
085  }
086}