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Java > Open Source Codes > soot > coffi > CoffiMethodSource


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
27 package soot.coffi;
28 import soot.options.*;
29
30 import soot.*;
31 import java.util.*;
32 import soot.jimple.*;
33
34 public class CoffiMethodSource implements MethodSource
35 {
36     public ClassFile coffiClass;
37     public method_info coffiMethod;
38
39     CoffiMethodSource(soot.coffi.ClassFile coffiClass, soot.coffi.method_info coffiMethod)
40     {
41         this.coffiClass = coffiClass;
42         this.coffiMethod = coffiMethod;
43     }
44
45     public Body getBody(SootMethod m, String JavaDoc phaseName)
46     {
47         JimpleBody jb = Jimple.v().newBody(m);
48         
49         Map options = PhaseOptions.v().getPhaseOptions(phaseName);
50         boolean useOriginalNames = PhaseOptions.getBoolean(options, "use-original-names");
51
52         if(useOriginalNames)
53             soot.coffi.Util.v().setFaithfulNaming(true);
54
55         /*
56             I need to set these to null to free Coffi structures.
57         fileBody.coffiClass = null;
58         bafBody.coffiMethod = null;
59
60         */
61         if(Options.v().verbose())
62             G.v().out.println("[" + m.getName() + "] Constructing JimpleBody from coffi...");
63
64         if(m.isAbstract() || m.isNative() || m.isPhantom())
65             return jb;
66             
67         if(Options.v().time())
68             Timers.v().conversionTimer.start();
69
70         if (coffiMethod == null)
71             G.v().out.println(m);
72         if(coffiMethod.instructions == null)
73         {
74             if(Options.v().verbose())
75                 G.v().out.println("[" + m.getName() +
76                     "] Parsing Coffi instructions...");
77
78              coffiClass.parseMethod(coffiMethod);
79         }
80                 
81         if(coffiMethod.cfg == null)
82         {
83             if(Options.v().verbose())
84                 G.v().out.println("[" + m.getName() +
85                     "] Building Coffi CFG...");
86
87              new soot.coffi.CFG(coffiMethod);
88
89          }
90
91          if(Options.v().verbose())
92              G.v().out.println("[" + m.getName() +
93                     "] Producing naive Jimple...");
94
95          boolean oldPhantomValue = Scene.v().getPhantomRefs();
96
97          Scene.v().setPhantomRefs(true);
98          coffiMethod.cfg.jimplify(coffiClass.constant_pool,
99              coffiClass.this_class, jb);
100          Scene.v().setPhantomRefs(oldPhantomValue);
101
102         if(Options.v().time())
103             Timers.v().conversionTimer.end();
104
105          coffiMethod.instructions = null;
106          coffiMethod.cfg = null;
107          coffiMethod.attributes = null;
108          coffiMethod.code_attr = null;
109          coffiMethod.jmethod = null;
110          coffiMethod.instructionList = null;
111
112          coffiMethod = null;
113          coffiClass = null;
114          
115          PackManager.v().getPack("jb").apply(jb);
116          return jb;
117     }
118 }
119
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