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Java > Open Source Codes > soot > baf > internal > AbstractInst


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 1999 Patrick Lam, Patrick Pominville and 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
26
27
28
29
30 package soot.baf.internal;
31
32 import soot.*;
33 import soot.baf.*;
34 import soot.util.*;
35 import java.util.*;
36
37 public abstract class AbstractInst extends AbstractUnit implements Inst
38 {
39     
40     public String JavaDoc toString()
41     {
42         return getName() + getParameters();
43     }
44     
45     public void toString(UnitPrinter up) {
46         up.literal(getName());
47         getParameters(up);
48     }
49
50
51     public int getInCount()
52     {
53         throw new RuntimeException JavaDoc("undefined "+ toString() + "!" );
54     }
55     
56     public int getOutCount()
57     {
58         throw new RuntimeException JavaDoc("undefined " + toString() + "!");
59     }
60     
61     public int getNetCount()
62     {
63         return getOutCount() - getInCount();
64     }
65
66   
67
68     public boolean fallsThrough()
69     {
70         return true;
71     }
72     public boolean branches()
73     {
74         return false;
75     }
76     
77
78
79    
80     public int getInMachineCount()
81     {
82         throw new RuntimeException JavaDoc("undefined"+ toString() + "!" );
83     }
84     
85     public int getOutMachineCount()
86     {
87         throw new RuntimeException JavaDoc("undefined" + toString() + "!");
88     }
89
90     public int getNetMachineCount()
91     {
92         return getOutMachineCount() - getInMachineCount();
93     }
94
95     
96     public Object JavaDoc clone()
97     {
98         throw new RuntimeException JavaDoc("undefined clone for: " + this.toString());
99     }
100    
101     
102     public abstract String JavaDoc getName();
103     String JavaDoc getParameters() { return ""; }
104     protected void getParameters(UnitPrinter up) {}
105
106     public boolean containsInvokeExpr() { return false; }
107     public boolean containsArrayRef() { return false; }
108     public boolean containsFieldRef() { return false; }
109     public boolean containsNewExpr() { return false; }
110 }
111
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