1 /*
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2006 Daniel Le Berre
3 *
4 * Based on the original minisat specification from:
5 *
6 * An extensible SAT solver. Niklas E?n and Niklas S?rensson. Proceedings of the
7 * Sixth International Conference on Theory and Applications of Satisfiability
8 * Testing, LNCS 2919, pp 502-518, 2003.
9 *
10 * This library is free software; you can redistribute it and/or modify it under
11 * the terms of the GNU Lesser General Public License as published by the Free
12 * Software Foundation; either version 2.1 of the License, or (at your option)
13 * any later version.
14 *
15 * This library is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
18 * details.
19 *
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this library; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25 package org.sat4j.reader.csp;
26
27 import java.util.Iterator;
28 import java.util.NoSuchElementException;
29
30 public class RangeDomain implements Domain {
31
32 private final int begin;
33
34 private final int end;
35
36 private final int size;
37
38 public RangeDomain(int begin, int end) {
39 this.begin = begin;
40 this.end = end;
41 size = end - begin + 1;
42 }
43
44 public int get(int i) {
45 assert i >= 0;
46 return begin + i;
47 }
48
49 public int size() {
50 return size;
51 }
52
53 public Iterator<Integer> iterator() {
54 return new Iterator<Integer>() {
55 private int i = begin;
56
57 public boolean hasNext() {
58 return i <= end;
59 }
60
61 public Integer next() {
62 if (i > end)
63 throw new NoSuchElementException();
64 return i++;
65 }
66
67 public void remove() {
68 throw new UnsupportedOperationException();
69 }
70 };
71 }
72
73 public int pos(int value) {
74 return value - begin;
75 }
76
77 }