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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.attribute;

import proguard.classfile.*;
import proguard.classfile.attribute.visitor.AttributeVisitor;
import proguard.classfile.visitor.*;

/**
 * This {@link Attribute} represents an enclosing method attribute.
 *
 * @author Eric Lafortune
 */
public class EnclosingMethodAttribute extends Attribute {
  public int u2classIndex;
  public int u2nameAndTypeIndex;

  /**
   * An extra field pointing to the referenced Clazz object. This field is typically filled out by
   * the {@link
   * proguard.classfile.util.ClassReferenceInitializer
   * ClassReferenceInitializer}.
   */
  public Clazz referencedClass;

  /**
   * An extra field optionally pointing to the referenced Method object. This field is typically
   * filled out by the {@link
   * proguard.classfile.util.ClassReferenceInitializer
   * ClassReferenceInitializer}.
   */
  public Method referencedMethod;

  /** Creates an uninitialized EnclosingMethodAttribute. */
  public EnclosingMethodAttribute() {}

  /** Creates an initialized EnclosingMethodAttribute. */
  public EnclosingMethodAttribute(
      int u2attributeNameIndex, int u2classIndex, int u2nameAndTypeIndex) {
    super(u2attributeNameIndex);

    this.u2classIndex = u2classIndex;
    this.u2nameAndTypeIndex = u2nameAndTypeIndex;
  }

  /** Returns the class name. */
  public String getClassName(Clazz clazz) {
    return clazz.getClassName(u2classIndex);
  }

  /** Returns the method/field name. */
  public String getName(Clazz clazz) {
    return clazz.getName(u2nameAndTypeIndex);
  }

  /** Returns the type. */
  public String getType(Clazz clazz) {
    return clazz.getType(u2nameAndTypeIndex);
  }

  /** Lets the referenced class accept the given visitor. */
  public void referencedClassAccept(ClassVisitor classVisitor) {
    if (referencedClass != null) {
      referencedClass.accept(classVisitor);
    }
  }

  /** Lets the referenced class member accept the given visitor. */
  public void referencedMethodAccept(MemberVisitor memberVisitor) {
    if (referencedMethod != null) {
      referencedMethod.accept(referencedClass, memberVisitor);
    }
  }

  // Implementations for Attribute.

  public void accept(Clazz clazz, AttributeVisitor attributeVisitor) {
    attributeVisitor.visitEnclosingMethodAttribute(clazz, this);
  }
}