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/*
 * Copyright (c) 2011, 2017, 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,
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package com.sun.source.doctree;


/**
 * A visitor of trees, in the style of the visitor design pattern.
 * Classes implementing this interface are used to operate
 * on a tree when the kind of tree is unknown at compile time.
 * When a visitor is passed to an tree's {@link DocTree#accept
 * accept} method, the visitXyz method most applicable
 * to that tree is invoked.
 *
 * 

Classes implementing this interface may or may not throw a * {@code NullPointerException} if the additional parameter {@code p} * is {@code null}; see documentation of the implementing class for * details. * *

WARNING: It is possible that methods will be added to * this interface to accommodate new, currently unknown, doc comment * structures added to future versions of the Java™ programming * language. Therefore, visitor classes directly implementing this * interface may be source incompatible with future versions of the * platform. * * @param the return type of this visitor's methods. Use {@link * Void} for visitors that do not need to return results. * @param

the type of the additional parameter to this visitor's * methods. Use {@code Void} for visitors that do not need an * additional parameter. * * @since 1.8 */ public interface DocTreeVisitor { /** * Visits an AttributeTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitAttribute(AttributeTree node, P p); /** * Visits an AuthorTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitAuthor(AuthorTree node, P p); /** * Visits a CommentTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitComment(CommentTree node, P p); /** * Visits a DeprecatedTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitDeprecated(DeprecatedTree node, P p); /** * Visits a DocCommentTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitDocComment(DocCommentTree node, P p); /** * Visits a DocRootTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitDocRoot(DocRootTree node, P p); /** * Visits an EndElementTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitEndElement(EndElementTree node, P p); /** * Visits an EntityTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitEntity(EntityTree node, P p); /** * Visits an ErroneousTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitErroneous(ErroneousTree node, P p); /** * Visits a HiddenTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitHidden(HiddenTree node, P p); /** * Visits an IdentifierTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitIdentifier(IdentifierTree node, P p); /** * Visits an IndexTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitIndex(IndexTree node, P p); /** * Visits an InheritDocTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitInheritDoc(InheritDocTree node, P p); /** * Visits a LinkTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitLink(LinkTree node, P p); /** * Visits an LiteralTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitLiteral(LiteralTree node, P p); /** * Visits a ParamTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitParam(ParamTree node, P p); /** * Visits a ProvidesTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitProvides(ProvidesTree node, P p); /** * Visits a ReferenceTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitReference(ReferenceTree node, P p); /** * Visits a ReturnTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitReturn(ReturnTree node, P p); /** * Visits a SeeTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitSee(SeeTree node, P p); /** * Visits a SerialTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitSerial(SerialTree node, P p); /** * Visits a SerialDataTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitSerialData(SerialDataTree node, P p); /** * Visits a SerialFieldTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitSerialField(SerialFieldTree node, P p); /** * Visits a SinceTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitSince(SinceTree node, P p); /** * Visits a StartElementTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitStartElement(StartElementTree node, P p); /** * Visits a TextTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitText(TextTree node, P p); /** * Visits a ThrowsTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitThrows(ThrowsTree node, P p); /** * Visits an UnknownBlockTagTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitUnknownBlockTag(UnknownBlockTagTree node, P p); /** * Visits an UnknownInlineTagTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitUnknownInlineTag(UnknownInlineTagTree node, P p); /** * Visits a UsesTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitUses(UsesTree node, P p); /** * Visits a ValueTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitValue(ValueTree node, P p); /** * Visits a VersionTreeTree node. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitVersion(VersionTree node, P p); /** * Visits an unknown type of DocTree node. * This can occur if the set of tags evolves and new kinds * of nodes are added to the {@code DocTree} hierarchy. * @param node the node being visited * @param p a parameter value * @return a result value */ R visitOther(DocTree node, P p); }





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