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Java > Open Source Codes > soot > toolkits > graph > DominatorTreeAdapter


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2004 Navindra Umanee <navindra@cs.mcgill.ca>
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.toolkits.graph;
21
22 import soot.*;
23 import soot.toolkits.scalar.*;
24 import soot.toolkits.graph.*;
25 import soot.jimple.*;
26 import soot.options.*;
27 import java.util.*;
28 import soot.util.*;
29
30 /**
31  * This adapter provides a DirectedGraph interface to DominatorTree.
32  *
33  * <p>
34  *
35  * This might be useful if e.g. you want to apply a DirectedGraph
36  * analysis such as the PseudoTopologicalOrderer to a DominatorTree.
37  *
38  * @author Navindra Umanee
39  **/
40 public class DominatorTreeAdapter implements DirectedGraph
41 {
42     DominatorTree dt;
43     
44     public DominatorTreeAdapter(DominatorTree dt)
45     {
46         this.dt = dt;
47     }
48
49     public List getHeads()
50     {
51         return Collections.singletonList(dt.getHead());
52     }
53
54     public List getTails()
55     {
56         return dt.getTails();
57     }
58
59     public List getPredsOf(Object JavaDoc node)
60     {
61         return Collections.singletonList(dt.getParentOf((DominatorNode)node));
62     }
63
64     public List getSuccsOf(Object JavaDoc node)
65     {
66         return dt.getChildrenOf((DominatorNode)node);
67     }
68
69     public Iterator iterator()
70     {
71         return dt.iterator();
72     }
73
74     public int size()
75     {
76         return dt.size();
77     }
78 }
79
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