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


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
26
27 package soot.jimple.internal;
28
29 import soot.*;
30 import soot.jimple.*;
31 import soot.util.*;
32 import java.util.*;
33
34 public abstract class AbstractLengthExpr extends AbstractUnopExpr implements LengthExpr
35 {
36     protected AbstractLengthExpr(ValueBox opBox) { super(opBox); }
37
38     public boolean equivTo(Object JavaDoc o)
39     {
40         if (o instanceof AbstractLengthExpr)
41         {
42             return opBox.getValue().equivTo(((AbstractLengthExpr)o).opBox.getValue());
43         }
44         return false;
45     }
46
47     /** Returns a hash code for this object, consistent with structural equality. */
48     public int equivHashCode()
49     {
50         return opBox.getValue().equivHashCode();
51     }
52
53     public abstract Object JavaDoc clone();
54
55     public String JavaDoc toString()
56     {
57         return Jimple.LENGTHOF + " " + opBox.getValue().toString();
58     }
59     
60     public void toString(UnitPrinter up) {
61         up.literal(Jimple.LENGTHOF);
62         up.literal(" ");
63         opBox.toString(up);
64     }
65
66     public Type getType()
67     {
68         return IntType.v();
69     }
70
71     public void apply(Switch sw)
72     {
73         ((ExprSwitch) sw).caseLengthExpr(this);
74     }
75 }
76
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