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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.*;

/**
 * This interface specifies the methods for a visitor of {@link Clazz} instances.
 *
 * @author Eric Lafortune
 */
public interface ClassVisitor {
  /**
   * Visits any Clazz instance. The more specific default implementations of this interface delegate
   * to this method.
   */
  void visitAnyClass(Clazz clazz);

  default void visitProgramClass(ProgramClass programClass) {
    visitAnyClass(programClass);
  }

  default void visitLibraryClass(LibraryClass libraryClass) {
    visitAnyClass(libraryClass);
  }
}