proguard.classfile.visitor.MemberAccessFlagCleaner Maven / Gradle / Ivy

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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 {@link ClassVisitor} and {@link MemberVisitor} clears the specified access flags of the
 * classes and class members that its visits.
 *
 * @see ClassConstants
 * @author Eric Lafortune
 */
public class MemberAccessFlagCleaner implements ClassVisitor, MemberVisitor {
  private final int accessFlags;

  /**
   * Creates a new MemberAccessFlagCleaner.
   *
   * @param accessFlags the member access flags to be cleared.
   */
  public MemberAccessFlagCleaner(int accessFlags) {
    this.accessFlags = accessFlags;
  }

  // Implementations for ClassVisitor.

  @Override
  public void visitAnyClass(Clazz clazz) {
    throw new UnsupportedOperationException(
        this.getClass().getName() + " does not support " + clazz.getClass().getName());
  }

  @Override
  public void visitProgramClass(ProgramClass programClass) {
    programClass.u2accessFlags &= ~accessFlags;
  }

  @Override
  public void visitLibraryClass(LibraryClass libraryClass) {
    libraryClass.u2accessFlags &= ~accessFlags;
  }

  // Implementations for MemberVisitor.
  public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) {}

  public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) {}

  public void visitProgramField(ProgramClass programClass, ProgramField programField) {
    programField.u2accessFlags &= ~accessFlags;
  }

  public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) {
    programMethod.u2accessFlags &= ~accessFlags;
  }
}