1 /*******************************************************************************
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
3 *
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
8 *
9 * Alternatively, the contents of this file may be used under the terms of
10 * either the GNU Lesser General Public License Version 2.1 or later (the
11 * "LGPL"), in which case the provisions of the LGPL are applicable instead
12 * of those above. If you wish to allow use of your version of this file only
13 * under the terms of the LGPL, and not to allow others to use your version of
14 * this file under the terms of the EPL, indicate your decision by deleting
15 * the provisions above and replace them with the notice and other provisions
16 * required by the LGPL. If you do not delete the provisions above, a recipient
17 * may use your version of this file under the terms of the EPL or the LGPL.
18 *******************************************************************************/
19 package org.sat4j.csp;
20
21 import java.util.NoSuchElementException;
22
23 import org.sat4j.specs.IteratorInt;
24
25 public class EnumeratedDomain implements Domain {
26
27 private final int[] values;
28
29 public EnumeratedDomain(int[] values) { // NOPMD
30 this.values = values;
31 }
32
33 public int get(int i) {
34 return values[i];
35 }
36
37 public int size() {
38 return values.length;
39 }
40
41 public IteratorInt iterator() {
42 return new IteratorInt() {
43 private int i = 0;
44
45 public boolean hasNext() {
46 return i < values.length;
47 }
48
49 public int next() {
50 if (i == values.length)
51 throw new NoSuchElementException();
52 return values[i++];
53 }
54 };
55 }
56
57 public int pos(int value) {
58 for (int i = 0; i < values.length; i++)
59 if (values[i] == value)
60 return i;
61 return -1;
62 }
63 }