KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > soot > util > IntegerNumberer


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2005 Ondrej Lhotak
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * 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 JavaDoc o ) {}
27     /** Should return the number that was assigned to object o that was
28      * previously passed as an argument to add().
29      */
30     public long get( Object JavaDoc o ) {
31         if( o == null ) return 0;
32         return ((Long JavaDoc) o).longValue();
33     }
34     /** Should return the object that was assigned the number number. */
35     public Object JavaDoc get( long number ) {
36         if( number == 0 ) return null;
37         return new Long JavaDoc(number);
38     }
39     /** Should return the number of objects that have been assigned numbers. */
40     public int size() {
41         throw new RuntimeException JavaDoc( "IntegerNumberer does not implement the size() method." );
42     }
43 }
44
Popular Tags