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Java > Open Source Codes > soot > shimple > internal > SValueUnitPair


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2003 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.shimple.internal;
21
22 import soot.*;
23 import soot.toolkits.scalar.ValueUnitPair;
24
25 /**
26  * Extension of ValueUnitPair that implements SUnitBox. Needed by
27  * SPatchingChain. Equality is no longer dependent on the value.
28  *
29  * @author Navindra Umanee
30  **/
31 public class SValueUnitPair extends ValueUnitPair implements SUnitBox
32 {
33     public SValueUnitPair(Value value, Unit unit)
34     {
35         super(value, unit);
36         setUnitChanged(true);
37     }
38
39     public boolean isBranchTarget()
40     {
41         return false;
42     }
43
44     public void setUnit(Unit u)
45     {
46         super.setUnit(u);
47         setUnitChanged(true);
48     }
49
50     protected boolean unitChanged = false;
51
52     /**
53      * @see SUnitBox#isUnitChanged()
54      **/
55     public boolean isUnitChanged()
56     {
57         return unitChanged;
58     }
59     
60     /**
61      * @see SUnitBox#setUnitChanged(boolean)
62      **/
63     public void setUnitChanged(boolean unitChanged)
64     {
65         this.unitChanged = unitChanged;
66     }
67 }
68
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