aoqi@0: /*
aoqi@0:  * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.source.util;
aoqi@0: 
aoqi@0: import com.sun.source.doctree.*;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * A simple visitor for tree nodes.
aoqi@0:  *
aoqi@0:  * @since 1.8
aoqi@0:  */
aoqi@0: @jdk.Exported
aoqi@0: public class SimpleDocTreeVisitor<R,P> implements DocTreeVisitor<R, P> {
aoqi@0:     protected final R DEFAULT_VALUE;
aoqi@0: 
aoqi@0:     protected SimpleDocTreeVisitor() {
aoqi@0:         DEFAULT_VALUE = null;
aoqi@0:     }
aoqi@0: 
aoqi@0:     protected SimpleDocTreeVisitor(R defaultValue) {
aoqi@0:         DEFAULT_VALUE = defaultValue;
aoqi@0:     }
aoqi@0: 
aoqi@0:     protected R defaultAction(DocTree node, P p) {
aoqi@0:         return DEFAULT_VALUE;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public final R visit(DocTree node, P p) {
aoqi@0:         return (node == null) ? null : node.accept(this, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public final R visit(Iterable<? extends DocTree> nodes, P p) {
aoqi@0:         R r = null;
aoqi@0:         if (nodes != null) {
aoqi@0:             for (DocTree node : nodes)
aoqi@0:                 r = visit(node, p);
aoqi@0:         }
aoqi@0:         return r;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitAttribute(AttributeTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitAuthor(AuthorTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitComment(CommentTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitDeprecated(DeprecatedTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitDocComment(DocCommentTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitDocRoot(DocRootTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitEndElement(EndElementTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitEntity(EntityTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitErroneous(ErroneousTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitIdentifier(IdentifierTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitInheritDoc(InheritDocTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitLink(LinkTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitLiteral(LiteralTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitParam(ParamTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitReference(ReferenceTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitReturn(ReturnTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitSee(SeeTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitSerial(SerialTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitSerialData(SerialDataTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitSerialField(SerialFieldTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitSince(SinceTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitStartElement(StartElementTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitText(TextTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitThrows(ThrowsTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitUnknownBlockTag(UnknownBlockTagTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitUnknownInlineTag(UnknownInlineTagTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitValue(ValueTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitVersion(VersionTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0:     public R visitOther(DocTree node, P p) {
aoqi@0:         return defaultAction(node, p);
aoqi@0:     }
aoqi@0: 
aoqi@0: }