| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare |
| * |
| * 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.optimize.peephole; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.visitor.ClassVisitor; |
| |
| /** |
| * This ClassVisitor delegates its visits to one of two other given |
| * ClassVisitor instances, depending on whether the classes are marked to be |
| * retargeted or not. |
| * |
| * @see ClassMerger |
| * |
| * @author Eric Lafortune |
| */ |
| public class RetargetedClassFilter |
| implements ClassVisitor |
| { |
| private final ClassVisitor retargetedClassVisitor; |
| private final ClassVisitor otherClassVisitor; |
| |
| |
| /** |
| * Creates a new RetargetedClassFilter. |
| * |
| * @param retargetedClassVisitor the class visitor to which visits to |
| * classes that are marked to be retargeted |
| * will be delegated. |
| */ |
| public RetargetedClassFilter(ClassVisitor retargetedClassVisitor) |
| { |
| this(retargetedClassVisitor, null); |
| } |
| |
| |
| /** |
| * Creates a new RetargetedClassFilter. |
| * |
| * @param retargetedClassVisitor the class visitor to which visits to |
| * classes that are marked to be retargeted |
| * will be delegated. |
| * @param otherClassVisitor the class visitor to which visits to |
| * classes that are not marked to be |
| * retargeted will be delegated. |
| */ |
| public RetargetedClassFilter(ClassVisitor retargetedClassVisitor, |
| ClassVisitor otherClassVisitor) |
| { |
| this.retargetedClassVisitor = retargetedClassVisitor; |
| this.otherClassVisitor = otherClassVisitor; |
| } |
| |
| |
| // Implementations for ClassVisitor. |
| |
| public void visitProgramClass(ProgramClass programClass) |
| { |
| // Is the class marked to be retargeted? |
| ClassVisitor classVisitor = ClassMerger.getTargetClass(programClass) != null ? |
| retargetedClassVisitor : otherClassVisitor; |
| |
| if (classVisitor != null) |
| { |
| classVisitor.visitProgramClass(programClass); |
| } |
| } |
| |
| |
| public void visitLibraryClass(LibraryClass libraryClass) |
| { |
| // A library class can't be retargeted. |
| if (otherClassVisitor != null) |
| { |
| otherClassVisitor.visitLibraryClass(libraryClass); |
| } |
| } |
| } |