1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2013 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.util.SimplifiedVisitor;
25import proguard.classfile.visitor.ClassVisitor;
26
27/**
28 * This ClassVisitor marks all program classes that it visits as caught.
29 * This means that these classes are exception classes that occur in exception
30 * handlers.
31 *
32 * @author Eric Lafortune
33 */
34public class CaughtClassMarker
35implements   ClassVisitor
36{
37    // Implementations for ClassVisitor.
38
39    public void visitLibraryClass(LibraryClass libraryClass) {}
40
41    public void visitProgramClass(ProgramClass programClass)
42    {
43        setCaught(programClass);
44    }
45
46
47    // Small utility methods.
48
49    private static void setCaught(Clazz clazz)
50    {
51        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
52        if (info != null)
53        {
54            info.setCaught();
55        }
56    }
57
58
59    public static boolean isCaught(Clazz clazz)
60    {
61        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
62        return info == null || info.isCaught();
63    }
64}