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 */ 21 package proguard.classfile.visitor; 22 23 import proguard.classfile.*; 24 25 26 /** 27 * This <code>ClassVisitor</code> delegates its visits to another given 28 * <code>ClassVisitor</code>, but only when visiting program classes. 29 * 30 * @author Eric Lafortune 31 */ 32 public class ProgramClassFilter implements ClassVisitor 33 { 34 private final ClassVisitor classVisitor; 35 36 37 /** 38 * Creates a new ProgramClassFilter. 39 * @param classVisitor the <code>ClassVisitor</code> to which visits 40 * will be delegated. 41 */ ProgramClassFilter(ClassVisitor classVisitor)42 public ProgramClassFilter(ClassVisitor classVisitor) 43 { 44 this.classVisitor = classVisitor; 45 } 46 47 48 // Implementations for ClassVisitor. 49 visitProgramClass(ProgramClass programClass)50 public void visitProgramClass(ProgramClass programClass) 51 { 52 classVisitor.visitProgramClass(programClass); 53 } 54 55 visitLibraryClass(LibraryClass libraryClass)56 public void visitLibraryClass(LibraryClass libraryClass) 57 { 58 // Don't delegate visits to library classes. 59 } 60 } 61