author | darcy |
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/* |
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* Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package javax.lang.model.util; |
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import javax.annotation.processing.SupportedSourceVersion; |
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import javax.lang.model.type.*; |
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import static javax.lang.model.SourceVersion.*; |
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/** |
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* A skeletal visitor of types with default behavior appropriate for |
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* the {@link javax.lang.model.SourceVersion#RELEASE_8 RELEASE_8} |
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* source version. |
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* |
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* <p> <b>WARNING:</b> The {@code TypeVisitor} interface implemented |
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* by this class may have methods added to it in the future to |
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* accommodate new, currently unknown, language structures added to |
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* future versions of the Java™ programming language. |
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* Therefore, methods whose names begin with {@code "visit"} may be |
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* added to this class in the future; to avoid incompatibilities, |
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* classes which extend this class should not declare any instance |
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* methods with names beginning with {@code "visit"}. |
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* |
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* <p>When such a new visit method is added, the default |
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* implementation in this class will be to call the {@link |
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* #visitUnknown visitUnknown} method. A new abstract type visitor |
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* class will also be introduced to correspond to the new language |
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* level; this visitor will have different default behavior for the |
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* visit method in question. When the new visitor is introduced, all |
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* or portions of this visitor may be deprecated. |
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* |
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* <p>Note that adding a default implementation of a new visit method |
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* in a visitor class will occur instead of adding a <em>default |
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* method</em> directly in the visitor interface since a Java SE 8 |
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* language feature cannot be used to this version of the API since |
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* this version is required to be runnable on Java SE 7 |
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* implementations. Future versions of the API that are only required |
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* to run on Java SE 8 and later may take advantage of default methods |
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* in this situation. |
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* |
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* @param <R> the return type of this visitor's methods. Use {@link |
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* Void} for visitors that do not need to return results. |
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* @param <P> the type of the additional parameter to this visitor's |
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* methods. Use {@code Void} for visitors that do not need an |
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* additional parameter. |
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* |
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* @see AbstractTypeVisitor6 |
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* @see AbstractTypeVisitor7 |
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* @see AbstractTypeVisitor9 |
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* @since 1.8 |
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*/ |
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@SupportedSourceVersion(RELEASE_8) |
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public abstract class AbstractTypeVisitor8<R, P> extends AbstractTypeVisitor7<R, P> { |
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/** |
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* Constructor for concrete subclasses to call. |
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*/ |
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protected AbstractTypeVisitor8() { |
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super(); |
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} |
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/** |
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* Visits an {@code IntersectionType} in a manner defined by a subclass. |
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* |
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* @param t {@inheritDoc} |
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* @param p {@inheritDoc} |
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* @return the result of the visit as defined by a subclass |
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*/ |
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public abstract R visitIntersection(IntersectionType t, P p); |
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} |