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.classfile.editor;
22
23import proguard.classfile.*;
24import proguard.classfile.visitor.ClassVisitor;
25
26import java.util.*;
27
28/**
29 * This ClassVisitor sorts the class members of the classes that it visits.
30 * The sorting order is based on the access flags, the names, and the
31 * descriptors.
32 *
33 * @author Eric Lafortune
34 */
35public class ClassMemberSorter implements ClassVisitor, Comparator
36{
37    // Implementations for ClassVisitor.
38
39    public void visitProgramClass(ProgramClass programClass)
40    {
41        // Sort the fields.
42        Arrays.sort(programClass.fields, 0, programClass.u2fieldsCount, this);
43
44        // Sort the methods.
45        Arrays.sort(programClass.methods, 0, programClass.u2methodsCount, this);
46    }
47
48
49    public void visitLibraryClass(LibraryClass libraryClass)
50    {
51    }
52
53
54    // Implementations for Comparator.
55
56    public int compare(Object object1, Object object2)
57    {
58        ProgramMember member1 = (ProgramMember)object1;
59        ProgramMember member2 = (ProgramMember)object2;
60
61        return member1.u2accessFlags     < member2.u2accessFlags     ? -1 :
62               member1.u2accessFlags     > member2.u2accessFlags     ?  1 :
63               member1.u2nameIndex       < member2.u2nameIndex       ? -1 :
64               member1.u2nameIndex       > member2.u2nameIndex       ?  1 :
65               member1.u2descriptorIndex < member2.u2descriptorIndex ? -1 :
66               member1.u2descriptorIndex > member2.u2descriptorIndex ?  1 :
67                                                                        0;
68    }
69}
70