1 /*
   2  * Copyright (c) 2005, 2019, 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 
  29 import javax.lang.model.element.*;
  30 
  31 import static javax.lang.model.SourceVersion.*;
  32 import javax.lang.model.SourceVersion;
  33 import javax.annotation.processing.SupportedSourceVersion;
  34 
  35 /**
  36  * A skeletal visitor for annotation values with default behavior
  37  * appropriate for the {@link SourceVersion#RELEASE_6 RELEASE_6}
  38  * source version.
  39  *
  40  * <p> <b>WARNING:</b> The {@code AnnotationValueVisitor} interface
  41  * implemented by this class may have methods added to it in the
  42  * future to accommodate new, currently unknown, language structures
  43  * added to future versions of the Java&trade; programming language.
  44  * Therefore, methods whose names begin with {@code "visit"} may be
  45  * added to this class in the future; to avoid incompatibilities,
  46  * classes which extend this class should not declare any instance
  47  * methods with names beginning with {@code "visit"}.


  48  *
  49  * <p>When such a new visit method is added, the default
  50  * implementation in this class will be to call the {@link
  51  * #visitUnknown visitUnknown} method.  A new abstract annotation
  52  * value visitor class will also be introduced to correspond to the
  53  * new language level; this visitor will have different default
  54  * behavior for the visit method in question.  When the new visitor is
  55  * introduced, all or portions of this visitor may be deprecated.

  56  *
  57  * @param <R> the return type of this visitor's methods
  58  * @param <P> the type of the additional parameter to this visitor's methods.
  59  *
  60  * @author Joseph D. Darcy
  61  * @author Scott Seligman
  62  * @author Peter von der Ah&eacute;
  63  *
  64  * @see AbstractAnnotationValueVisitor7
  65  * @see AbstractAnnotationValueVisitor8
  66  * @see AbstractAnnotationValueVisitor9
  67  * @see AbstractAnnotationValueVisitor14
  68  * @since 1.6
  69  */
  70 @SupportedSourceVersion(RELEASE_6)
  71 public abstract class AbstractAnnotationValueVisitor6<R, P>
  72     implements AnnotationValueVisitor<R, P> {
  73 
  74     /**
  75      * Constructor for concrete subclasses to call.

   1 /*
   2  * Copyright (c) 2005, 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 
  29 import javax.lang.model.element.*;
  30 
  31 import static javax.lang.model.SourceVersion.*;
  32 import javax.lang.model.SourceVersion;
  33 import javax.annotation.processing.SupportedSourceVersion;
  34 
  35 /**
  36  * A skeletal visitor for annotation values with default behavior
  37  * appropriate for the {@link SourceVersion#RELEASE_6 RELEASE_6}
  38  * source version.
  39  *
  40  * @apiNote
  41  * <p id=note_for_subclasses><strong>WARNING:</strong> The {@code
  42  * AnnotationValueVisitor} interface implemented by this class may
  43  * have methods added to it in the future to accommodate new,
  44  * currently unknown, language structures added to future versions of
  45  * the Java&trade; programming language.  Therefore, methods whose
  46  * names begin with {@code "visit"} may be added to this class in the
  47  * future; to avoid incompatibilities, classes and subclasses which
  48  * extend this class should not declare any instance methods with
  49  * names beginning with {@code "visit"}.</p>
  50  *
  51  * <p>When such a new visit method is added, the default
  52  * implementation in this class will be to directly or indirectly call
  53  * the {@link #visitUnknown visitUnknown} method.  A new abstract
  54  * annotation value visitor class will also be introduced to
  55  * correspond to the new language level; this visitor will have
  56  * different default behavior for the visit method in question.  When
  57  * a new visitor is introduced, portions of this visitor class may be
  58  * deprecated, including its constructors.
  59  *
  60  * @param <R> the return type of this visitor's methods
  61  * @param <P> the type of the additional parameter to this visitor's methods.
  62  *
  63  * @author Joseph D. Darcy
  64  * @author Scott Seligman
  65  * @author Peter von der Ah&eacute;
  66  *
  67  * @see AbstractAnnotationValueVisitor7
  68  * @see AbstractAnnotationValueVisitor8
  69  * @see AbstractAnnotationValueVisitor9
  70  * @see AbstractAnnotationValueVisitor14
  71  * @since 1.6
  72  */
  73 @SupportedSourceVersion(RELEASE_6)
  74 public abstract class AbstractAnnotationValueVisitor6<R, P>
  75     implements AnnotationValueVisitor<R, P> {
  76 
  77     /**
  78      * Constructor for concrete subclasses to call.