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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
Lbool.java | - | 100% | 100% | 100% |
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1 | /* | |
2 | * SAT4J: a SATisfiability library for Java | |
3 | * Copyright (C) 2004 Daniel Le Berre | |
4 | * | |
5 | * Based on the original minisat specification from: | |
6 | * | |
7 | * An extensible SAT solver. Niklas Eï¿œn and Niklas Sï¿œrensson. | |
8 | * Proceedings of the Sixth International Conference on Theory | |
9 | * and Applications of Satisfiability Testing, LNCS 2919, | |
10 | * pp 502-518, 2003. | |
11 | * | |
12 | * This library is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU Lesser General Public | |
14 | * License as published by the Free Software Foundation; either | |
15 | * version 2.1 of the License, or (at your option) any later version. | |
16 | * | |
17 | * This library is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * Lesser General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU Lesser General Public | |
23 | * License along with this library; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | * | |
26 | */ | |
27 | ||
28 | package org.sat4j.minisat.core; | |
29 | ||
30 | /* | |
31 | * Created on 9 oct. 2003 Problï¿œme : comment rendre opposite final ? | |
32 | */ | |
33 | ||
34 | /** | |
35 | * @author leberre Cette classe reprï¿œsente les valeurs boolï¿œennes qui | |
36 | * peuvent ï¿œtre associï¿œes aux littï¿œraux. | |
37 | */ | |
38 | public enum Lbool { | |
39 | ||
40 | FALSE("F"), TRUE("T"), UNDEFINED("U"); | |
41 | ||
42 | static { | |
43 | // on crï¿œe ici les rï¿œgles de la nï¿œgation | |
44 | 31 | FALSE.opposite = TRUE; |
45 | 31 | TRUE.opposite = FALSE; |
46 | 31 | UNDEFINED.opposite = UNDEFINED; |
47 | } | |
48 | ||
49 | 93 | private Lbool(String symbol) { |
50 | 93 | this.symbol = symbol; |
51 | } | |
52 | ||
53 | /** | |
54 | * Nï¿œgation boolï¿œenne | |
55 | * | |
56 | * @return la nï¿œgation de la valeur boolï¿œnne. La nï¿œgation de la valeur | |
57 | * UNDEFINED est UNDEFINED. | |
58 | */ | |
59 | 3 | public Lbool not() { |
60 | 3 | return opposite; |
61 | } | |
62 | ||
63 | /** | |
64 | * Une valeur boolï¿œenne est reprï¿œsentï¿œe par T,F ou U. | |
65 | * | |
66 | * @return l'une des trois lettres | |
67 | */ | |
68 | 3 | @Override |
69 | public String toString() { | |
70 | 3 | return symbol; |
71 | } | |
72 | ||
73 | /** | |
74 | * Le symbole reprï¿œsentant la valeur boolï¿œenne | |
75 | */ | |
76 | private final String symbol; | |
77 | ||
78 | /** | |
79 | * la valeur boolï¿œenne opposï¿œe | |
80 | */ | |
81 | private Lbool opposite; | |
82 | ||
83 | } |
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