01: /* Soot - a J*va Optimization Framework
02: * Copyright (C) 2005 Ondrej Lhotak
03: *
04: * This library is free software; you can redistribute it and/or
05: * modify it under the terms of the GNU Lesser General Public
06: * License as published by the Free Software Foundation; either
07: * version 2.1 of the License, or (at your option) any later version.
08: *
09: * This library is distributed in the hope that it will be useful,
10: * but WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12: * Lesser General Public License for more details.
13: *
14: * You should have received a copy of the GNU Lesser General Public
15: * License along with this library; if not, write to the
16: * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17: * Boston, MA 02111-1307, USA.
18: */
19:
20: package soot.util;
21:
22: /** A numberer that associates each number with the corresponding Long object.
23: */
24: public class IntegerNumberer implements Numberer {
25: /** Tells the numberer that a new object needs to be assigned a number. */
26: public void add(Object o) {
27: }
28:
29: /** Should return the number that was assigned to object o that was
30: * previously passed as an argument to add().
31: */
32: public long get(Object o) {
33: if (o == null)
34: return 0;
35: return ((Long) o).longValue();
36: }
37:
38: /** Should return the object that was assigned the number number. */
39: public Object get(long number) {
40: if (number == 0)
41: return null;
42: return new Long(number);
43: }
44:
45: /** Should return the number of objects that have been assigned numbers. */
46: public int size() {
47: throw new RuntimeException(
48: "IntegerNumberer does not implement the size() method.");
49: }
50: }
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