1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2014 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 */
21package proguard.optimize.info;
22
23import proguard.classfile.*;
24import proguard.classfile.visitor.ClassVisitor;
25
26/**
27 * This ClassVisitor marks all program classes that it visits as caught.
28 * This means that these classes are exception classes that occur in exception
29 * handlers.
30 *
31 * @author Eric Lafortune
32 */
33public class CaughtClassMarker
34implements   ClassVisitor
35{
36    // Implementations for ClassVisitor.
37
38    public void visitLibraryClass(LibraryClass libraryClass) {}
39
40    public void visitProgramClass(ProgramClass programClass)
41    {
42        setCaught(programClass);
43    }
44
45
46    // Small utility methods.
47
48    private static void setCaught(Clazz clazz)
49    {
50        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
51        if (info != null)
52        {
53            info.setCaught();
54        }
55    }
56
57
58    public static boolean isCaught(Clazz clazz)
59    {
60        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
61        return info == null || info.isCaught();
62    }
63}