001package ball.game.crossword; 002/*- 003 * ########################################################################## 004 * Game Applications and Utilities 005 * $Id: Label.java 5285 2020-02-05 04:23:21Z ball $ 006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/ball-game/trunk/src/main/java/ball/game/crossword/Label.java $ 007 * %% 008 * Copyright (C) 2010 - 2020 Allen D. Ball 009 * %% 010 * Licensed under the Apache License, Version 2.0 (the "License"); 011 * you may not use this file except in compliance with the License. 012 * You may obtain a copy of the License at 013 * 014 * http://www.apache.org/licenses/LICENSE-2.0 015 * 016 * Unless required by applicable law or agreed to in writing, software 017 * distributed under the License is distributed on an "AS IS" BASIS, 018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 019 * See the License for the specific language governing permissions and 020 * limitations under the License. 021 * ########################################################################## 022 */ 023import java.util.Comparator; 024import java.util.Objects; 025 026/** 027 * Crossword clue {@link Label}. 028 * 029 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball} 030 * @version $Revision: 5285 $ 031 */ 032public class Label implements Comparable<Label> { 033 private static final Comparator<? super Label> COMPARATOR = 034 Comparator 035 .<Label>comparingInt(t -> t.direction.ordinal()) 036 .thenComparingInt(Label::getIndex); 037 038 private final Direction direction; 039 private final int index; 040 041 /** 042 * @param direction The solution word {@link Direction}. 043 * @param index The starting block index. 044 */ 045 protected Label(Direction direction, int index) { 046 this.direction = Objects.requireNonNull(direction); 047 this.index = index; 048 } 049 050 public Direction getDirection() { return direction; } 051 052 public int getIndex() { return index; } 053 054 @Override 055 public int compareTo(Label that) { 056 return Objects.compare(this, that, COMPARATOR); 057 } 058 059 @Override 060 public boolean equals(Object object) { 061 return ((object instanceof Label) 062 ? (this.compareTo((Label) object) == 0) 063 : super.equals(object)); 064 } 065 066 @Override 067 public int hashCode() { return Objects.hash(direction, index); } 068 069 @Override 070 public String toString() { 071 return (getDirection().toString().substring(0, 1) 072 + String.valueOf(index)); 073 } 074 075 public static Label parse(String string) { 076 return new Label(Direction.parse(string.substring(0, 1)), 077 Integer.parseInt(string.substring(1))); 078 } 079}