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Java > Open Source Codes > soot > toolkits > scalar > UnitValueBoxPair


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 1997-1999 Raja Vallee-Rai
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 /*
21  * Modified by the Sable Research Group and others 1997-1999.
22  * See the 'credits' file distributed with Soot for the complete list of
23  * contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
24  */
25
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30
31 package soot.toolkits.scalar;
32
33 import soot.*;
34 import soot.util.*;
35 import java.util.*;
36
37
38
39 /**
40  * Utility class used to package a Unit and a ValueBox together.
41  */
42 public class UnitValueBoxPair
43 {
44     public Unit unit;
45     public ValueBox valueBox;
46
47
48     /**
49      * Constructs a UnitValueBoxPair form a Unit object and a ValueBox object.
50      * @param local some Local
51      * @param unit some Unit.
52      */
53     public UnitValueBoxPair(Unit unit, ValueBox valueBox)
54     {
55         this.unit = unit;
56         this.valueBox = valueBox;
57     }
58
59
60     /**
61      * Two UnitValueBoxPairs are equal iff they the Unit they hold are 'equal' and
62      * the ValueBoxes they hold are 'equal'.
63      * @param other another UnitValueBoxPair
64      * @return true if equal.
65      */
66     public boolean equals(Object JavaDoc other)
67     {
68         if(other instanceof UnitValueBoxPair)
69         {
70             UnitValueBoxPair otherPair = (UnitValueBoxPair) other;
71
72             if(unit.equals(otherPair.unit) && valueBox.equals(otherPair.valueBox))
73                 return true;
74         }
75
76         return false;
77     }
78
79     public int hashCode() {
80         return unit.hashCode() + valueBox.hashCode();
81     }
82
83     public String JavaDoc toString() {
84         return valueBox+" in "+unit;
85     }
86     
87     public Unit getUnit()
88     {
89         return unit;
90     }
91
92     public ValueBox getValueBox()
93     {
94         return valueBox;
95     }
96
97 }
98
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