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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.*;
import proguard.util.ArrayUtil;

/**
 * This {@link MemberVisitor} delegates all visits to each {@link MemberVisitor} in a given list.
 *
 * @author Eric Lafortune
 */
public class MultiMemberVisitor implements MemberVisitor {
  private MemberVisitor[] memberVisitors;
  private int memberVisitorCount;

  public MultiMemberVisitor() {
    this.memberVisitors = new MemberVisitor[16];
  }

  public MultiMemberVisitor(MemberVisitor... memberVisitors) {
    this.memberVisitors = memberVisitors;
    this.memberVisitorCount = memberVisitors.length;
  }

  public void addMemberVisitor(MemberVisitor memberVisitor) {
    memberVisitors = ArrayUtil.add(memberVisitors, memberVisitorCount++, memberVisitor);
  }

  public void visitProgramField(ProgramClass programClass, ProgramField programField) {
    for (int index = 0; index < memberVisitorCount; index++) {
      memberVisitors[index].visitProgramField(programClass, programField);
    }
  }

  public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) {
    for (int index = 0; index < memberVisitorCount; index++) {
      memberVisitors[index].visitProgramMethod(programClass, programMethod);
    }
  }

  public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) {
    for (int index = 0; index < memberVisitorCount; index++) {
      memberVisitors[index].visitLibraryField(libraryClass, libraryField);
    }
  }

  public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) {
    for (int index = 0; index < memberVisitorCount; index++) {
      memberVisitors[index].visitLibraryMethod(libraryClass, libraryMethod);
    }
  }
}