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 with a given
28 * flag for simple enums.
29 *
30 * @author Eric Lafortune
31 */
32public class SimpleEnumMarker
33implements   ClassVisitor
34{
35    private final boolean simple;
36
37
38    /**
39     * Creates a new SimpleEnumMarker that marks visited classes with the
40     * given flag.
41     */
42    public SimpleEnumMarker(boolean simple)
43    {
44        this.simple = simple;
45    }
46
47
48    // Implementations for ClassVisitor.
49
50    public void visitLibraryClass(LibraryClass libraryClass) {}
51
52    public void visitProgramClass(ProgramClass programClass)
53    {
54        setSimpleEnum(programClass);
55    }
56
57
58    // Small utility methods.
59
60    private void setSimpleEnum(Clazz clazz)
61    {
62        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
63        if (info != null)
64        {
65            info.setSimpleEnum(simple);
66        }
67    }
68
69
70    public static boolean isSimpleEnum(Clazz clazz)
71    {
72        ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz);
73        return info != null && info.isSimpleEnum();
74    }
75}