content: /*
   * Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  package jdkx.lang.model.element;
  
  /**
   * Represents a value of an annotation interface element.
   * A value is of one of the following types:
   * <ul><li> a wrapper class (such as {@link Integer}) for a primitive type
   *     <li> {@code String}
   *     <li> {@code TypeMirror}
   *     <li> {@code VariableElement} (representing an enum constant)
   *     <li> {@code AnnotationMirror}
   *     <li> {@code List<? extends AnnotationValue>}
   *              (representing the elements, in declared order, if the value is an array)
   * </ul>
   *
   * @author Joseph D. Darcy
   * @author Scott Seligman
   * @author Peter von der Ah&eacute;
   * @since 1.6
   */
  public interface AnnotationValue {
  
      /**
       * {@return the value}
       */
      Object getValue();
  
      /**
       * {@return a string representation of this value}
       * This is returned in a form suitable for representing this value
       * in the source code of an annotation.
       */
      String toString();
  
      /**
       * Applies a visitor to this value.
       *
       * @param <R> the return type of the visitor's methods
       * @param <P> the type of the additional parameter to the visitor's methods
       * @param v   the visitor operating on this value
       * @param p   additional parameter to the visitor
       * @return a visitor-specified result
       */
      <R, P> R accept(AnnotationValueVisitor<R, P> v, P p);
  }
  