1 /*
   2  * Copyright (c) 2010, 2020, 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 javax.lang.model.element.*;
  29 import javax.annotation.processing.SupportedSourceVersion;
  30 import javax.lang.model.SourceVersion;
  31 import static javax.lang.model.SourceVersion.*;
  32 
  33 /**
  34  * A simple visitor of program elements with default behavior
  35  * appropriate for the {@link SourceVersion#RELEASE_7 RELEASE_7}
  36  * source version.
  37  *
  38  * Visit methods corresponding to {@code RELEASE_7} and earlier
  39  * language constructs call {@link #defaultAction defaultAction},
  40  * passing their arguments to {@code defaultAction}'s corresponding
  41  * parameters.
  42  *
  43  * @apiNote
  44  * Methods in this class may be overridden subject to their general
  45  * contract.
  46  *
  47  * @param <R> the return type of this visitor's methods.  Use {@code Void}
  48  *             for visitors that do not need to return results.
  49  * @param <P> the type of the additional parameter to this visitor's methods.  Use {@code Void}
  50  *              for visitors that do not need an additional parameter.
  51  *
  52  * @see <a href="SimpleElementVisitor6.html#note_for_subclasses">
  53  * <strong>Compatibility note for subclasses</strong></a>
  54  * @see SimpleElementVisitor6
  55  * @see SimpleElementVisitor8
  56  * @see SimpleElementVisitor9
  57  * @see SimpleElementVisitor14
  58  * @since 1.7
  59  */
  60 @SupportedSourceVersion(RELEASE_7)
  61 public class SimpleElementVisitor7<R, P> extends SimpleElementVisitor6<R, P> {
  62     /**
  63      * Constructor for concrete subclasses; uses {@code null} for the
  64      * default value.
  65      *
  66      * @deprecated Release 7 is obsolete; update to a visitor for a newer
  67      * release level.
  68      */
  69     @Deprecated(since="12")
  70     protected SimpleElementVisitor7(){
  71         super(null); // Superclass constructor deprecated too
  72     }
  73 
  74     /**
  75      * Constructor for concrete subclasses; uses the argument for the
  76      * default value.
  77      *
  78      * @param defaultValue the value to assign to {@link #DEFAULT_VALUE}
  79      *
  80      * @deprecated Release 7 is obsolete; update to a visitor for a newer
  81      * release level.
  82      */
  83     @Deprecated(since="12")
  84     protected SimpleElementVisitor7(R defaultValue){
  85         super(defaultValue); // Superclass constructor deprecated too
  86     }
  87 
  88     /**
  89      * {@inheritDoc}
  90      *
  91      * @implSpec This implementation calls {@code defaultAction}.
  92      *
  93      * @param e {@inheritDoc}
  94      * @param p {@inheritDoc}
  95      * @return  {@inheritDoc}
  96      */
  97     @Override
  98     public R visitVariable(VariableElement e, P p) {
  99         return defaultAction(e, p);
 100     }
 101 }