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Java > Open Source Codes > soot > dava > toolkits > base > finders > IndexSetComparator


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2003 Jerome Miecznikowski
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.dava.toolkits.base.finders;
21
22 import java.util.*;
23
24 class IndexSetComparator implements Comparator
25 {
26     public int compare( Object JavaDoc o1, Object JavaDoc o2)
27     {
28     if (o1 == o2)
29         return 0;
30
31     o1 = ((TreeSet) o1).last();
32     o2 = ((TreeSet) o2).last();
33     
34     if (o1 instanceof String JavaDoc)
35         return 1;
36
37     if (o2 instanceof String JavaDoc)
38         return -1;
39
40     return ((Integer JavaDoc) o1).intValue() - ((Integer JavaDoc) o2).intValue();
41     }
42
43     public boolean equals( Object JavaDoc o)
44     {
45     return (o instanceof IndexSetComparator);
46     }
47 }
48
49
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