KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > soot > dava > internal > SET > SETIfElseNode


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2003 Jerome Miecznikowski
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 package soot.dava.internal.SET;
21
22 import java.util.*;
23 import soot.util.*;
24 import soot.jimple.*;
25 import soot.dava.internal.asg.*;
26 import soot.dava.internal.AST.*;
27 import soot.dava.internal.javaRep.*;
28 import soot.dava.toolkits.base.misc.*;
29
30 public class SETIfElseNode extends SETDagNode
31 {
32     private IterableSet ifBody, elseBody;
33
34     public SETIfElseNode( AugmentedStmt characterizingStmt, IterableSet body, IterableSet ifBody, IterableSet elseBody)
35     {
36     super( characterizingStmt, body);
37
38     this.ifBody = ifBody;
39     this.elseBody = elseBody;
40
41     add_SubBody( ifBody);
42     add_SubBody( elseBody);
43     }
44
45     public IterableSet get_NaturalExits()
46     {
47     IterableSet c = new IterableSet();
48
49     IterableSet ifChain = (IterableSet) body2childChain.get( ifBody);
50     if (ifChain.isEmpty() == false)
51         c.addAll( ((SETNode) ifChain.getLast()).get_NaturalExits());
52
53     IterableSet elseChain = (IterableSet) body2childChain.get( elseBody);
54     if (elseChain.isEmpty() == false)
55         c.addAll( ((SETNode) elseChain.getLast()).get_NaturalExits());
56
57     return c;
58     }
59
60     public ASTNode emit_AST()
61     {
62     List
63         astBody0 = emit_ASTBody( (IterableSet) body2childChain.get( ifBody)),
64         astBody1 = emit_ASTBody( (IterableSet) body2childChain.get( elseBody));
65
66     ConditionExpr ce = (ConditionExpr) ((IfStmt) get_CharacterizingStmt().get_Stmt()).getCondition();
67
68     if (astBody0.isEmpty()) {
69         List tbody = astBody0;
70         astBody0 = astBody1;
71         astBody1 = tbody;
72
73         ce = ConditionFlipper.flip( ce);
74     }
75
76     if (astBody1.isEmpty())
77         return new ASTIfNode( get_Label(), ce, astBody0);
78     else
79         return new ASTIfElseNode( get_Label(), ce, astBody0, astBody1);
80     }
81 }
82
83
84
Popular Tags