jdk8-mips64-public/langtools: src/share/classes/javax/lang/model/util/TypeKindVisitor7.java@e39bd9401ea5 (annotated)

src/share/classes/javax/lang/model/util/TypeKindVisitor7.java@e39bd9401ea5 (annotated)

src/share/classes/javax/lang/model/util/TypeKindVisitor7.java

Thu, 07 Nov 2013 20:11:56 -0800

author: darcy
date: Thu, 07 Nov 2013 20:11:56 -0800
changeset 2184: e39bd9401ea5
parent 1522: 09f65aad4759
child 2525: 2eb010b6cb22
permissions: -rw-r--r--

8027730: Fix release-8 type visitors to support intersection types
Reviewed-by: jjg, jlahoda, sogoel

 /*
  * Copyright (c) 2010, 2013, 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 javax.lang.model.util;
 import javax.lang.model.type.*;
 import javax.annotation.processing.SupportedSourceVersion;
 import static javax.lang.model.SourceVersion.*;
 import javax.lang.model.SourceVersion;
 /**
  * A visitor of types based on their {@linkplain TypeKind kind} with
  * default behavior appropriate for the {@link SourceVersion#RELEASE_7
  * RELEASE_7} source version.  For {@linkplain
  * TypeMirror types} <tt><i>XYZ</i></tt> that may have more than one
  * kind, the <tt>visit<i>XYZ</i></tt> methods in this class delegate
  * to the <tt>visit<i>XYZKind</i></tt> method corresponding to the
  * first argument's kind.  The <tt>visit<i>XYZKind</i></tt> methods
  * call {@link #defaultAction defaultAction}, passing their arguments
  * to {@code defaultAction}'s corresponding parameters.
  *
  * <p> Methods in this class may be overridden subject to their
  * general contract.  Note that annotating methods in concrete
  * subclasses with {@link java.lang.Override @Override} will help
  * ensure that methods are overridden as intended.
  *
  * <p> <b>WARNING:</b> The {@code TypeVisitor} interface implemented
  * by this class may have methods added to it in the future to
  * accommodate new, currently unknown, language structures added to
  * future versions of the Java&trade; programming language.
  * Therefore, methods whose names begin with {@code "visit"} may be
  * added to this class in the future; to avoid incompatibilities,
  * classes which extend this class should not declare any instance
  * methods with names beginning with {@code "visit"}.
  *
  * <p>When such a new visit method is added, the default
  * implementation in this class will be to call the {@link
  * #visitUnknown visitUnknown} method.  A new type kind visitor class
  * will also be introduced to correspond to the new language level;
  * this visitor will have different default behavior for the visit
  * method in question.  When the new visitor is introduced, all or
  * portions of this visitor may be deprecated.
  *
  * <p>Note that adding a default implementation of a new visit method
  * in a visitor class will occur instead of adding a <em>default
  * method</em> directly in the visitor interface since a Java SE 8
  * language feature cannot be used to this version of the API since
  * this version is required to be runnable on Java SE 7
  * implementations.  Future versions of the API that are only required
  * to run on Java SE 8 and later may take advantage of default methods
  * in this situation.
  *
  * @param <R> the return type of this visitor's methods.  Use {@link
  *            Void} for visitors that do not need to return results.
  * @param <P> the type of the additional parameter to this visitor's
  *            methods.  Use {@code Void} for visitors that do not need an
  *            additional parameter.
  *
  * @see TypeKindVisitor6
  * @see TypeKindVisitor8
  * @since 1.7
  */
 @SupportedSourceVersion(RELEASE_7)
 public class TypeKindVisitor7<R, P> extends TypeKindVisitor6<R, P> {
     /**
      * Constructor for concrete subclasses to call; uses {@code null}
      * for the default value.
      */
     protected TypeKindVisitor7() {
         super(null);
     }
     /**
      * Constructor for concrete subclasses to call; uses the argument
      * for the default value.
      *
      * @param defaultValue the value to assign to {@link #DEFAULT_VALUE}
      */
     protected TypeKindVisitor7(R defaultValue) {
         super(defaultValue);
     }
     /**
      * This implementation visits a {@code UnionType} by calling
      * {@code defaultAction}.
      *
      * @param t  {@inheritDoc}
      * @param p  {@inheritDoc}
      * @return the result of {@code defaultAction}
      */
     @Override
     public R visitUnion(UnionType t, P p) {
         return defaultAction(t, p);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/javax/lang/model/util/TypeKindVisitor7.java@e39bd9401ea5 (annotated)

src/share/classes/javax/lang/model/util/TypeKindVisitor7.java