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Java > Open Source Codes > soot > util > Numberer


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2004 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 converts objects to unique non-negative integers, and vice-versa.
23  */
24 public interface 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     /** Should return the object that was assigned the number number. */
32     public Object JavaDoc get( long number );
33     /** Should return the number of objects that have been assigned numbers. */
34     public int size();
35 }
36
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