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Java > Open Source Codes > proguard > evaluation > InvocationUnit


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */

21 package proguard.evaluation;
22
23 import proguard.classfile.*;
24 import proguard.classfile.attribute.CodeAttribute;
25 import proguard.classfile.constant.*;
26 import proguard.classfile.constant.visitor.ConstantVisitor;
27 import proguard.classfile.instruction.*;
28 import proguard.classfile.util.*;
29 import proguard.classfile.visitor.MemberVisitor;
30 import proguard.evaluation.value.*;
31
32 /**
33  * This interface sets up the variables for entering a method,
34  * and it updates the stack for the invocation of a class member.
35  *
36  * @author Eric Lafortune
37  */

38 public interface InvocationUnit
39 {
40     /**
41      * Sets up the given variables for entering the given method.
42      */

43     public void enterMethod(Clazz clazz,
44                             Method method,
45                             Variables variables);
46
47
48     /**
49      * Exits the given method with the given return value.
50      */

51     public void exitMethod(Clazz clazz,
52                            Method method,
53                            Value returnValue);
54
55
56     /**
57      * Updates the given stack corresponding to the execution of the given
58      * field or method reference instruction.
59      */

60     public void invokeMember(Clazz clazz,
61                              Method method,
62                              CodeAttribute codeAttribute,
63                              int offset,
64                              ConstantInstruction constantInstruction,
65                              Stack stack);
66 }
67
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