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ProGuardCORE is a free library to read, analyze, modify, and write Java class files.

There is a newer version: 9.1.6

/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2020 Guardsquare NV
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package proguard.classfile.visitor;

import proguard.classfile.Clazz;
import proguard.classfile.attribute.annotation.*;
import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor;
import proguard.classfile.constant.*;
import proguard.classfile.constant.visitor.ConstantVisitor;

/**
 * This {@link ConstantVisitor} and {@link ElementValueVisitor} lets a given {@link MemberVisitor}
 * visit all the referenced class members of the elements that it visits.
 *
 * @author Eric Lafortune
 */
public class ReferencedMemberVisitor implements ConstantVisitor, ElementValueVisitor {
  protected final MemberVisitor memberVisitor;

  public ReferencedMemberVisitor(MemberVisitor memberVisitor) {
    this.memberVisitor = memberVisitor;
  }

  // Implementations for ConstantVisitor.

  public void visitAnyConstant(Clazz clazz, Constant constant) {}

  public void visitStringConstant(Clazz clazz, StringConstant stringConstant) {
    stringConstant.referencedMemberAccept(memberVisitor);
  }

  public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant) {
    refConstant.referencedMemberAccept(memberVisitor);
  }

  // Implementations for ElementValueVisitor.

  public void visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue) {
    elementValue.referencedMethodAccept(memberVisitor);
  }
}