| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| package proguard.classfile.visitor; |
| |
| import proguard.classfile.*; |
| |
| import java.util.Set; |
| |
| /** |
| * This <code>ClassVisitor</code> sets the version number of the program classes |
| * that it visits. |
| * |
| * @author Eric Lafortune |
| */ |
| public class ClassVersionSetter implements ClassVisitor |
| { |
| private final int classVersion; |
| |
| private final Set newerClassVersions; |
| |
| |
| /** |
| * Creates a new ClassVersionSetter. |
| * @param classVersion the class version number. |
| */ |
| public ClassVersionSetter(int classVersion) |
| { |
| this(classVersion, null); |
| } |
| |
| |
| /** |
| * Creates a new ClassVersionSetter that also stores any newer class version |
| * numbers that it encounters while visiting program classes. |
| * @param classVersion the class version number. |
| * @param newerClassVersions the <code>Set</code> in which newer class |
| * version numbers can be collected. |
| */ |
| public ClassVersionSetter(int classVersion, |
| Set newerClassVersions) |
| { |
| this.classVersion = classVersion; |
| this.newerClassVersions = newerClassVersions; |
| } |
| |
| |
| // Implementations for ClassVisitor. |
| |
| public void visitProgramClass(ProgramClass programClass) |
| { |
| if (programClass.u4version > classVersion && |
| newerClassVersions != null) |
| { |
| newerClassVersions.add(new Integer(programClass.u4version)); |
| } |
| |
| programClass.u4version = classVersion; |
| } |
| |
| |
| public void visitLibraryClass(LibraryClass libraryClass) |
| { |
| // Library classes don't have version numbers. |
| } |
| } |