| /* |
| * 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 proguard.classfile.attribute.*; |
| import proguard.classfile.attribute.annotation.*; |
| import proguard.classfile.attribute.annotation.visitor.*; |
| import proguard.classfile.attribute.visitor.*; |
| import proguard.classfile.constant.*; |
| import proguard.classfile.constant.visitor.ConstantVisitor; |
| import proguard.classfile.util.SimplifiedVisitor; |
| |
| /** |
| * This ClassVisitor, MemberVisitor, ConstantVisitor, AttributeVisitor, etc. |
| * lets a given ClassVisitor visit all the referenced classes of the elements |
| * that it visits. Only downstream elements are considered (in order to avoid |
| * loops and repeated visits). |
| * |
| * @author Eric Lafortune |
| */ |
| public class ReferencedClassVisitor |
| extends SimplifiedVisitor |
| implements ClassVisitor, |
| MemberVisitor, |
| ConstantVisitor, |
| AttributeVisitor, |
| LocalVariableInfoVisitor, |
| LocalVariableTypeInfoVisitor, |
| AnnotationVisitor, |
| ElementValueVisitor |
| { |
| private final ClassVisitor classVisitor; |
| |
| |
| public ReferencedClassVisitor(ClassVisitor classVisitor) |
| { |
| this.classVisitor = classVisitor; |
| } |
| |
| |
| // Implementations for ClassVisitor. |
| |
| public void visitProgramClass(ProgramClass programClass) |
| { |
| // Visit the constant pool entries. |
| programClass.constantPoolEntriesAccept(this); |
| |
| // Visit the fields and methods. |
| programClass.fieldsAccept(this); |
| programClass.methodsAccept(this); |
| |
| // Visit the attributes. |
| programClass.attributesAccept(this); |
| } |
| |
| |
| public void visitLibraryClass(LibraryClass libraryClass) |
| { |
| // Visit the superclass and interfaces. |
| libraryClass.superClassAccept(classVisitor); |
| libraryClass.interfacesAccept(classVisitor); |
| |
| // Visit the fields and methods. |
| libraryClass.fieldsAccept(this); |
| libraryClass.methodsAccept(this); |
| } |
| |
| |
| // Implementations for MemberVisitor. |
| |
| public void visitProgramMember(ProgramClass programClass, ProgramMember programMember) |
| { |
| // Let the visitor visit the classes referenced in the descriptor string. |
| programMember.referencedClassesAccept(classVisitor); |
| |
| // Visit the attributes. |
| programMember.attributesAccept(programClass, this); |
| } |
| |
| |
| public void visitLibraryMember(LibraryClass programClass, LibraryMember libraryMember) |
| { |
| // Let the visitor visit the classes referenced in the descriptor string. |
| libraryMember.referencedClassesAccept(classVisitor); |
| } |
| |
| |
| // Implementations for ConstantVisitor. |
| |
| public void visitAnyConstant(Clazz clazz, Constant constant) {} |
| |
| |
| public void visitStringConstant(Clazz clazz, StringConstant stringConstant) |
| { |
| // Let the visitor visit the class referenced in the string constant. |
| stringConstant.referencedClassAccept(classVisitor); |
| } |
| |
| |
| public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant) |
| { |
| // Let the visitor visit the class referenced in the reference constant. |
| refConstant.referencedClassAccept(classVisitor); |
| } |
| |
| |
| public void visitClassConstant(Clazz clazz, ClassConstant classConstant) |
| { |
| // Let the visitor visit the class referenced in the class constant. |
| classConstant.referencedClassAccept(classVisitor); |
| } |
| |
| |
| // Implementations for AttributeVisitor. |
| |
| public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} |
| |
| |
| public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute) |
| { |
| // Let the visitor visit the class of the enclosing method. |
| enclosingMethodAttribute.referencedClassAccept(classVisitor); |
| } |
| |
| |
| public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) |
| { |
| // Visit the attributes of the code attribute. |
| codeAttribute.attributesAccept(clazz, method, this); |
| } |
| |
| |
| public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute) |
| { |
| // Visit the local variables. |
| localVariableTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this); |
| } |
| |
| |
| public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute) |
| { |
| // Visit the local variable types. |
| localVariableTypeTableAttribute.localVariablesAccept(clazz, method, codeAttribute, this); |
| } |
| |
| |
| public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute) |
| { |
| // Let the visitor visit the classes referenced in the signature string. |
| signatureAttribute.referencedClassesAccept(classVisitor); |
| } |
| |
| |
| public void visitAnyAnnotationsAttribute(Clazz clazz, AnnotationsAttribute annotationsAttribute) |
| { |
| // Visit the annotations. |
| annotationsAttribute.annotationsAccept(clazz, this); |
| } |
| |
| |
| public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method, ParameterAnnotationsAttribute parameterAnnotationsAttribute) |
| { |
| // Visit the parameter annotations. |
| parameterAnnotationsAttribute.annotationsAccept(clazz, method, this); |
| } |
| |
| |
| public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute) |
| { |
| // Visit the default element value. |
| annotationDefaultAttribute.defaultValueAccept(clazz, this); |
| } |
| |
| |
| // Implementations for LocalVariableInfoVisitor. |
| |
| public void visitLocalVariableInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfo localVariableInfo) |
| { |
| // Let the visitor visit the class referenced in the local variable. |
| localVariableInfo.referencedClassAccept(classVisitor); |
| } |
| |
| |
| // Implementations for LocalVariableTypeInfoVisitor. |
| |
| public void visitLocalVariableTypeInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeInfo localVariableTypeInfo) |
| { |
| // Let the visitor visit the classes referenced in the local variable type. |
| localVariableTypeInfo.referencedClassesAccept(classVisitor); |
| } |
| |
| |
| // Implementations for AnnotationVisitor. |
| |
| public void visitAnnotation(Clazz clazz, Annotation annotation) |
| { |
| // Let the visitor visit the classes referenced in the annotation. |
| annotation.referencedClassesAccept(classVisitor); |
| |
| // Visit the element values. |
| annotation.elementValuesAccept(clazz, this); |
| } |
| |
| |
| // Implementations for ElementValueVisitor. |
| |
| public void visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue) {} |
| |
| |
| public void visitEnumConstantElementValue(Clazz clazz, Annotation annotation, EnumConstantElementValue enumConstantElementValue) |
| { |
| // Let the visitor visit the classes referenced in the constant element value. |
| enumConstantElementValue.referencedClassesAccept(classVisitor); |
| } |
| |
| |
| public void visitClassElementValue(Clazz clazz, Annotation annotation, ClassElementValue classElementValue) |
| { |
| // Let the visitor visit the classes referenced in the class element value. |
| classElementValue.referencedClassesAccept(classVisitor); |
| } |
| |
| |
| public void visitArrayElementValue(Clazz clazz, Annotation annotation, ArrayElementValue arrayElementValue) |
| { |
| // Visit the element values. |
| arrayElementValue.elementValuesAccept(clazz, annotation, this); |
| } |
| } |