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Java > Open Source Codes > soot > javaToJimple > LocalUsesChecker


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2004 Jennifer Lhotak
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.javaToJimple;
21 import java.util.*;
22
23 public class LocalUsesChecker extends polyglot.visit.NodeVisitor{
24
25     private ArrayList locals;
26     private ArrayList localDecls;
27     private ArrayList news;
28     
29     public ArrayList getLocals() {
30         return locals;
31     }
32
33     public ArrayList getNews(){
34         return news;
35     }
36
37     public ArrayList getLocalDecls(){
38         return localDecls;
39     }
40     
41     public LocalUsesChecker(){
42         locals = new ArrayList();
43         localDecls = new ArrayList();
44         news = new ArrayList();
45     }
46
47     public polyglot.ast.Node leave(polyglot.ast.Node old, polyglot.ast.Node n, polyglot.visit.NodeVisitor visitor) {
48     
49         if (n instanceof polyglot.ast.Local){
50             if (!(locals.contains(new polyglot.util.IdentityKey(((polyglot.ast.Local)n).localInstance())))){
51                 if (!((polyglot.ast.Local)n).isConstant()){
52                     locals.add(new polyglot.util.IdentityKey(((polyglot.ast.Local)n).localInstance()));
53                 }
54             }
55         }
56
57         if (n instanceof polyglot.ast.LocalDecl){
58             localDecls.add(new polyglot.util.IdentityKey(((polyglot.ast.LocalDecl)n).localInstance()));
59         }
60         
61         if (n instanceof polyglot.ast.Formal){
62             localDecls.add(new polyglot.util.IdentityKey(((polyglot.ast.Formal)n).localInstance()));
63         }
64         
65         if (n instanceof polyglot.ast.New){
66             news.add(n);
67         }
68         return n;
69     }
70 }
71
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