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Java > Open Source Codes > soot > jimple > spark > pag > LocalVarNode


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2002 Ondrej 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.jimple.spark.pag;
21 import soot.jimple.spark.*;
22 import soot.*;
23 import java.util.*;
24
25 /** Represents a simple variable node (Green) in the pointer assignment graph
26  * that is specific to a particular method invocation.
27  * @author Ondrej Lhotak
28  */
29 public class LocalVarNode extends VarNode {
30     public ContextVarNode context( Object JavaDoc context )
31     { return cvns == null ? null : (ContextVarNode) cvns.get( context ); }
32
33     public SootMethod getMethod() {
34         return method;
35     }
36     public String JavaDoc toString() {
37     return "LocalVarNode "+getNumber()+" "+variable+" "+method;
38     }
39     /* End of public methods. */
40
41     LocalVarNode( PAG pag, Object JavaDoc variable, Type t, SootMethod m ) {
42     super( pag, variable, t );
43         this.method = m;
44         //if( m == null ) throw new RuntimeException( "method shouldn't be null" );
45 }
46     /** Registers a cvn as having this node as its base. */
47     void addContext( ContextVarNode cvn, Object JavaDoc context ) {
48     if( cvns == null ) cvns = new HashMap();
49     cvns.put( context, cvn );
50     }
51
52     /* End of package methods. */
53
54     protected Map cvns;
55     protected SootMethod method;
56 }
57
58
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