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Java > Open Source Codes > soot > javaToJimple > BiMap


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2004 Jennifer 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.javaToJimple;
21
22 import java.util.*;
23
24 public class BiMap {
25
26     HashMap keyVal;
27     HashMap valKey;
28     
29     public BiMap(){
30     }
31
32     public void put(Object JavaDoc key, Object JavaDoc val){
33         if (keyVal == null){
34             keyVal = new HashMap();
35         }
36         if (valKey == null){
37             valKey = new HashMap();
38         }
39
40         keyVal.put(key, val);
41         valKey.put(val, key);
42         
43     }
44
45     public Object JavaDoc getKey(Object JavaDoc val){
46         if (valKey == null) return null;
47         return valKey.get(val);
48     }
49
50     public Object JavaDoc getVal(Object JavaDoc key){
51         if (keyVal == null) return null;
52         return keyVal.get(key);
53     }
54
55     public boolean containsKey(Object JavaDoc key){
56         if (keyVal == null) return false;
57         return keyVal.containsKey(key);
58     }
59     
60     public boolean containsVal(Object JavaDoc val){
61         if (valKey == null) return false;
62         return valKey.containsKey(val);
63     }
64 }
65
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