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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.annotation;

import proguard.classfile.*;
import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor;
import proguard.classfile.visitor.ClassVisitor;

/**
 * This {@link ElementValue} represents a class element value.
 *
 * @author Eric Lafortune
 */
public class ClassElementValue extends ElementValue {
  public int u2classInfoIndex;

  /**
   * An extra field pointing to the Clazz objects referenced in the type name string. This field is
   * filled out by the {@link
   * proguard.classfile.util.ClassReferenceInitializer ClassReferenceInitializer}. References
   * to primitive types are ignored.
   */
  public Clazz[] referencedClasses;

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

  /** Creates an initialized ClassElementValue. */
  public ClassElementValue(int u2elementNameIndex, int u2classInfoIndex) {
    super(u2elementNameIndex);

    this.u2classInfoIndex = u2classInfoIndex;
  }

  /** Returns the class info name. */
  public String getClassName(Clazz clazz) {
    return clazz.getString(u2classInfoIndex);
  }

  /** Applies the given visitor to all referenced classes. */
  public void referencedClassesAccept(ClassVisitor classVisitor) {
    if (referencedClasses != null) {
      for (int index = 0; index < referencedClasses.length; index++) {
        Clazz referencedClass = referencedClasses[index];
        if (referencedClass != null) {
          referencedClass.accept(classVisitor);
        }
      }
    }
  }

  // Implementations for ElementValue.

  public char getTag() {
    return ElementValue.TAG_CLASS;
  }

  public void accept(Clazz clazz, Annotation annotation, ElementValueVisitor elementValueVisitor) {
    elementValueVisitor.visitClassElementValue(clazz, annotation, this);
  }
}