1   /*
    2    * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package javax.lang.model.util;
   27   
   28   import java.util.List;
   29   import javax.lang.model.element;
   30   
   31   import javax.lang.model.type.TypeMirror;
   32   import static javax.lang.model.SourceVersion.*;
   33   import javax.lang.model.SourceVersion;
   34   import javax.annotation.processing.SupportedSourceVersion;
   35   
   36   /**
   37    * A skeletal visitor for annotation values with default behavior
   38    * appropriate for the {@link SourceVersion#RELEASE_7 RELEASE_7}
   39    * source version.
   40    *
   41    * <p> <b>WARNING:</b> The {@code AnnotationValueVisitor} interface
   42    * implemented by this class may have methods added to it in the
   43    * future to accommodate new, currently unknown, language structures
   44    * added to future versions of the Java&trade; programming language.
   45    * Therefore, methods whose names begin with {@code "visit"} may be
   46    * added to this class in the future; to avoid incompatibilities,
   47    * classes which extend this class should not declare any instance
   48    * methods with names beginning with {@code "visit"}.
   49    *
   50    * <p>When such a new visit method is added, the default
   51    * implementation in this class will be to call the {@link
   52    * #visitUnknown visitUnknown} method.  A new abstract annotation
   53    * value visitor class will also be introduced to correspond to the
   54    * new language level; this visitor will have different default
   55    * behavior for the visit method in question.  When the new visitor is
   56    * introduced, all or portions of this visitor may be deprecated.
   57    *
   58    * @param <R> the return type of this visitor's methods
   59    * @param <P> the type of the additional parameter to this visitor's methods.
   60    *
   61    * @see AbstractAnnotationValueVisitor6
   62    * @since 1.7
   63    */
   64   @SupportedSourceVersion(RELEASE_7)
   65   public abstract class AbstractAnnotationValueVisitor7<R, P> extends AbstractAnnotationValueVisitor6<R, P> {
   66   
   67       /**
   68        * Constructor for concrete subclasses to call.
   69        */
   70       protected AbstractAnnotationValueVisitor7() {
   71           super();
   72       }
   73   }