| /* |
| * 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.classfile.visitor; |
| |
| import proguard.classfile.Clazz; |
| import proguard.classfile.constant.ClassConstant; |
| import proguard.classfile.constant.visitor.ConstantVisitor; |
| import proguard.classfile.util.SimplifiedVisitor; |
| |
| /** |
| * This <code>ConstantVisitor</code> delegates its visits to class constants |
| * to another given <code>ConstantVisitor</code>, except for classes that |
| * are extended or implemented by a given class. This exception includes the |
| * class itself. |
| * |
| * @author Eric Lafortune |
| */ |
| public class ImplementingClassConstantFilter |
| extends SimplifiedVisitor |
| implements ConstantVisitor |
| { |
| private final Clazz implementingClass; |
| private final ConstantVisitor constantVisitor; |
| |
| |
| /** |
| * Creates a new ImplementingClassConstantFilter. |
| * @param implementingClass the class whose superclasses and interfaces will |
| * not be visited. |
| * @param constantVisitor the <code>ConstantVisitor</code> to which visits |
| * will be delegated. |
| */ |
| public ImplementingClassConstantFilter(Clazz implementingClass, |
| ConstantVisitor constantVisitor) |
| { |
| this.implementingClass = implementingClass; |
| this.constantVisitor = constantVisitor; |
| } |
| |
| |
| // Implementations for ConstantVisitor. |
| |
| public void visitClassConstant(Clazz clazz, ClassConstant classConstant) |
| { |
| Clazz referencedClass = classConstant.referencedClass; |
| if (referencedClass == null || |
| !implementingClass.extendsOrImplements(referencedClass)) |
| { |
| constantVisitor.visitClassConstant(clazz, classConstant); |
| } |
| } |
| } |