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


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
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29
30
31 package soot.jimple.internal;
32
33 import soot.tagkit.*;
34 import soot.*;
35 import soot.jimple.*;
36 import soot.util.*;
37 import soot.baf.*;
38 import soot.jimple.*;
39 import java.util.*;
40
41 public class JThrowStmt extends AbstractStmt implements ThrowStmt
42 {
43     ValueBox opBox;
44
45     public JThrowStmt(Value op)
46     {
47         this(Jimple.v().newImmediateBox(op));
48     }
49
50     protected JThrowStmt(ValueBox opBox)
51     {
52         this.opBox = opBox;
53     }
54
55     public Object JavaDoc clone()
56     {
57         return new JThrowStmt(Jimple.cloneIfNecessary(getOp()));
58     }
59
60     public ValueBox getOpBox()
61     {
62         return opBox;
63     }
64
65     public Value getOp()
66     {
67         return opBox.getValue();
68     }
69
70     public void setOp(Value op)
71     {
72         opBox.setValue(op);
73     }
74
75     public String JavaDoc toString()
76     {
77         return "throw " + opBox.getValue().toString();
78     }
79     
80     public void toString(UnitPrinter up) {
81         up.literal(Jimple.v().THROW);
82         up.literal(" ");
83         opBox.toString(up);
84     }
85
86     public List getUseBoxes()
87     {
88         List useBoxes = new ArrayList();
89
90         useBoxes.addAll(opBox.getValue().getUseBoxes());
91         useBoxes.add(opBox);
92
93         return useBoxes;
94     }
95
96     public void apply(Switch sw)
97     {
98         ((StmtSwitch) sw).caseThrowStmt(this);
99     }
100
101
102     public void convertToBaf(JimpleToBafContext context, List out)
103     {
104         ((ConvertToBaf)getOp()).convertToBaf(context, out);
105
106     Unit u;
107         out.add(u = Baf.v().newThrowInst());
108
109     Unit currentUnit = this;
110
111     Iterator it = currentUnit.getTags().iterator();
112     while(it.hasNext()) {
113         u.addTag((Tag) it.next());
114     }
115     
116     }
117
118
119     
120     public boolean fallsThrough(){return false;}
121     public boolean branches(){return false;}
122
123
124
125 }
126
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