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Java > Open Source Codes > soot > jimple > internal > AbstractNegExpr


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 1999 Patrick Lam
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.jimple.internal;
32
33 import soot.*;
34 import soot.jimple.*;
35 import soot.util.*;
36 import java.util.*;
37
38 public abstract class AbstractNegExpr extends AbstractUnopExpr implements NegExpr
39 {
40     protected AbstractNegExpr(ValueBox opBox) { super(opBox); }
41
42     /** Compares the specified object with this one for structural equality. */
43     public boolean equivTo(Object JavaDoc o)
44     {
45         if (o instanceof AbstractNegExpr)
46         {
47             return opBox.getValue().equivTo(((AbstractNegExpr)o).opBox.getValue());
48         }
49         return false;
50     }
51
52     /** Returns a hash code for this object, consistent with structural equality. */
53     public int equivHashCode()
54     {
55         return opBox.getValue().equivHashCode();
56     }
57
58     public abstract Object JavaDoc clone();
59
60     public String JavaDoc toString()
61     {
62         return Jimple.NEG + " " + opBox.getValue().toString();
63     }
64     
65     public void toString(UnitPrinter up) {
66         up.literal(Jimple.NEG);
67         up.literal(" ");
68         opBox.toString(up);
69     }
70
71     public Type getType()
72     {
73         Value op = opBox.getValue();
74
75         if(op.getType().equals(IntType.v()) || op.getType().equals(ByteType.v()) ||
76             op.getType().equals(ShortType.v()) || op.getType().equals(BooleanType.v()) ||
77             op.getType().equals(CharType.v()))
78             return IntType.v();
79         else if(op.getType().equals(LongType.v()))
80             return LongType.v();
81         else if(op.getType().equals(DoubleType.v()))
82             return DoubleType.v();
83         else if(op.getType().equals(FloatType.v()))
84             return FloatType.v();
85         else
86             return UnknownType.v();
87     }
88
89     public void apply(Switch sw)
90     {
91         ((ExprSwitch) sw).caseNegExpr(this);
92     }
93 }
94
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