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.visitor; 22 23import proguard.classfile.*; 24 25/** 26 * This <code>ClassVisitor</code> delegates its visits to another given 27 * <code>ClassVisitor</code>, except for classes that extend or implement 28 * a given class. 29 * 30 * @author Eric Lafortune 31 */ 32public class ImplementedClassFilter implements ClassVisitor 33{ 34 private final Clazz implementedClass; 35 private final ClassVisitor classVisitor; 36 37 38 /** 39 * Creates a new ImplementedClassFilter. 40 * @param implementedClass the class whose implementations will not be 41 * visited. 42 * @param classVisitor the <code>ClassVisitor</code> to which visits will 43 * be delegated. 44 */ 45 public ImplementedClassFilter(Clazz implementedClass, 46 ClassVisitor classVisitor) 47 { 48 this.implementedClass = implementedClass; 49 this.classVisitor = classVisitor; 50 } 51 52 53 // Implementations for ClassVisitor. 54 55 public void visitProgramClass(ProgramClass programClass) 56 { 57 if (!programClass.extendsOrImplements(implementedClass)) 58 { 59 classVisitor.visitProgramClass(programClass); 60 } 61 } 62 63 64 public void visitLibraryClass(LibraryClass libraryClass) 65 { 66 if (!libraryClass.extendsOrImplements(implementedClass)) 67 { 68 classVisitor.visitLibraryClass(libraryClass); 69 } 70 } 71}