01: /*
02: * ProGuard -- shrinking, optimization, obfuscation, and preverification
03: * of Java bytecode.
04: *
05: * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
06: *
07: * This program is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License as published by the Free
09: * 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.classfile.editor;
22:
23: import proguard.classfile.*;
24: import proguard.classfile.attribute.ExceptionsAttribute;
25: import proguard.classfile.constant.ClassConstant;
26: import proguard.classfile.constant.visitor.ConstantVisitor;
27: import proguard.classfile.util.SimplifiedVisitor;
28:
29: /**
30: * This ConstantVisitor adds all class constants that it visits to the given
31: * target exceptions attribute.
32: *
33: * @author Eric Lafortune
34: */
35: public class ExceptionAdder extends SimplifiedVisitor implements
36: ConstantVisitor {
37: private final ExceptionsAttribute targetExceptionsAttribute;
38:
39: private final ConstantAdder constantAdder = new ConstantAdder();
40: private final ExceptionsEditor exceptionsEditor = new ExceptionsEditor();
41:
42: /**
43: * Creates a new MemberAdder that will copy methods into the given target
44: * class.
45: */
46: public ExceptionAdder(ProgramClass targetClass,
47: ExceptionsAttribute targetExceptionsAttribute) {
48: this .targetExceptionsAttribute = targetExceptionsAttribute;
49:
50: constantAdder.setTargetClass(targetClass);
51: }
52:
53: // Implementations for ConstantVisitor.
54:
55: public void visitClassConstant(Clazz clazz,
56: ClassConstant classConstant) {
57: constantAdder.visitClassConstant(clazz, classConstant);
58:
59: exceptionsEditor.addException(targetExceptionsAttribute,
60: constantAdder.getConstantIndex());
61: }
62: }
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