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src/share/classes/javax/lang/model/util/SimpleTypeVisitor7.java@8cc5b440fdde (annotated)

src/share/classes/javax/lang/model/util/SimpleTypeVisitor7.java

Wed, 06 Apr 2011 19:30:57 -0700

author

darcy

date

Wed, 06 Apr 2011 19:30:57 -0700

changeset 969

8cc5b440fdde

parent 851

cad51b6eb7a6

child 1054

111bbf1ad913

permissions

-rw-r--r--

7033809: Rename "disjunctive" to "union" in javax.lang.model
Reviewed-by: mcimadamore, jjg

darcy@575	1	/*
darcy@851	2	* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
darcy@575	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
darcy@575	4	*
darcy@575	5	* This code is free software; you can redistribute it and/or modify it
darcy@575	6	* under the terms of the GNU General Public License version 2 only, as
darcy@575	7	* published by the Free Software Foundation. Oracle designates this
darcy@575	8	* particular file as subject to the "Classpath" exception as provided
darcy@575	9	* by Oracle in the LICENSE file that accompanied this code.
darcy@575	10	*
darcy@575	11	* This code is distributed in the hope that it will be useful, but WITHOUT
darcy@575	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
darcy@575	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
darcy@575	14	* version 2 for more details (a copy is included in the LICENSE file that
darcy@575	15	* accompanied this code).
darcy@575	16	*
darcy@575	17	* You should have received a copy of the GNU General Public License version
darcy@575	18	* 2 along with this work; if not, write to the Free Software Foundation,
darcy@575	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
darcy@575	20	*
darcy@575	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
darcy@575	22	* or visit www.oracle.com if you need additional information or have any
darcy@575	23	* questions.
darcy@575	24	*/
darcy@575	25
darcy@575	26	package javax.lang.model.util;
darcy@575	27
darcy@575	28	import javax.lang.model.type.*;
darcy@575	29	import javax.annotation.processing.SupportedSourceVersion;
darcy@575	30	import javax.lang.model.SourceVersion;
darcy@575	31	import static javax.lang.model.SourceVersion.*;
darcy@575	32
darcy@575	33	/**
darcy@575	34	* A simple visitor of types with default behavior appropriate for the
darcy@575	35	* {@link SourceVersion#RELEASE_7 RELEASE_7} source version.
darcy@575	36	*
darcy@851	37	* Visit methods corresponding to {@code RELEASE_7} and earlier
darcy@851	38	* language constructs call {@link #defaultAction defaultAction},
darcy@851	39	* passing their arguments to {@code defaultAction}'s corresponding
darcy@851	40	* parameters.
darcy@575	41	*
darcy@575	42	* <p> Methods in this class may be overridden subject to their
darcy@575	43	* general contract. Note that annotating methods in concrete
darcy@575	44	* subclasses with {@link java.lang.Override @Override} will help
darcy@575	45	* ensure that methods are overridden as intended.
darcy@575	46	*
darcy@575	47	* <p> <b>WARNING:</b> The {@code TypeVisitor} interface implemented
darcy@575	48	* by this class may have methods added to it in the future to
darcy@575	49	* accommodate new, currently unknown, language structures added to
darcy@575	50	* future versions of the Java&trade; programming language.
darcy@575	51	* Therefore, methods whose names begin with {@code "visit"} may be
darcy@575	52	* added to this class in the future; to avoid incompatibilities,
darcy@575	53	* classes which extend this class should not declare any instance
darcy@575	54	* methods with names beginning with {@code "visit"}.
darcy@575	55	*
darcy@575	56	* <p>When such a new visit method is added, the default
darcy@575	57	* implementation in this class will be to call the {@link
darcy@575	58	* #visitUnknown visitUnknown} method. A new simple type visitor
darcy@575	59	* class will also be introduced to correspond to the new language
darcy@575	60	* level; this visitor will have different default behavior for the
darcy@575	61	* visit method in question. When the new visitor is introduced, all
darcy@575	62	* or portions of this visitor may be deprecated.
darcy@575	63	*
darcy@575	64	* @param <R> the return type of this visitor's methods. Use {@link
darcy@575	65	* Void} for visitors that do not need to return results.
darcy@575	66	* @param <P> the type of the additional parameter to this visitor's
darcy@575	67	* methods. Use {@code Void} for visitors that do not need an
darcy@575	68	* additional parameter.
darcy@575	69	*
darcy@575	70	* @see SimpleTypeVisitor6
darcy@575	71	* @since 1.7
darcy@575	72	*/
darcy@575	73	@SupportedSourceVersion(RELEASE_7)
darcy@575	74	public class SimpleTypeVisitor7<R, P> extends SimpleTypeVisitor6<R, P> {
darcy@575	75	/**
darcy@575	76	* Constructor for concrete subclasses; uses {@code null} for the
darcy@575	77	* default value.
darcy@575	78	*/
darcy@575	79	protected SimpleTypeVisitor7(){
darcy@575	80	super(null);
darcy@575	81	}
darcy@575	82
darcy@575	83	/**
darcy@575	84	* Constructor for concrete subclasses; uses the argument for the
darcy@575	85	* default value.
darcy@575	86	*
darcy@575	87	* @param defaultValue the value to assign to {@link #DEFAULT_VALUE}
darcy@575	88	*/
darcy@575	89	protected SimpleTypeVisitor7(R defaultValue){
darcy@575	90	super(defaultValue);
darcy@575	91	}
darcy@851	92
darcy@851	93	/**
darcy@969	94	* This implementation visits a {@code UnionType} by calling
darcy@851	95	* {@code defaultAction}.
darcy@851	96	*
darcy@851	97	* @param t {@inheritDoc}
darcy@851	98	* @param p {@inheritDoc}
darcy@851	99	* @return the result of {@code defaultAction}
darcy@851	100	*/
darcy@851	101	@Override
darcy@969	102	public R visitUnion(UnionType t, P p) {
darcy@851	103	return defaultAction(t, p);
darcy@851	104	}
darcy@575	105	}