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 */ 21 package proguard.classfile.visitor; 22 23 import proguard.classfile.Clazz; 24 import proguard.classfile.attribute.annotation.*; 25 import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor; 26 import proguard.classfile.constant.*; 27 import proguard.classfile.constant.visitor.ConstantVisitor; 28 import proguard.classfile.util.SimplifiedVisitor; 29 30 /** 31 * This ConstantVisitor and ElementValueVisitor lets a given MemberVisitor 32 * visit all the referenced class members of the elements that it visits. 33 * 34 * @author Eric Lafortune 35 */ 36 public class ReferencedMemberVisitor 37 extends SimplifiedVisitor 38 implements ConstantVisitor, 39 ElementValueVisitor 40 { 41 private final MemberVisitor memberVisitor; 42 43 ReferencedMemberVisitor(MemberVisitor memberVisitor)44 public ReferencedMemberVisitor(MemberVisitor memberVisitor) 45 { 46 this.memberVisitor = memberVisitor; 47 } 48 49 50 // Implementations for ConstantVisitor. 51 visitAnyConstant(Clazz clazz, Constant constant)52 public void visitAnyConstant(Clazz clazz, Constant constant) {} 53 54 visitStringConstant(Clazz clazz, StringConstant stringConstant)55 public void visitStringConstant(Clazz clazz, StringConstant stringConstant) 56 { 57 stringConstant.referencedMemberAccept(memberVisitor); 58 } 59 60 visitAnyRefConstant(Clazz clazz, RefConstant refConstant)61 public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant) 62 { 63 refConstant.referencedMemberAccept(memberVisitor); 64 } 65 66 67 // Implementations for ElementValueVisitor. 68 visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue)69 public void visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue) 70 { 71 elementValue.referencedMethodAccept(memberVisitor); 72 } 73 } 74