File indexing completed on 2024-04-21 11:39:58

 /*
     This file is part of the syndication library
     SPDX-FileCopyrightText: 2006 Frank Osterfeld <osterfeld@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef SYNDICATION_RDF_NODEVISITOR_H
 #define SYNDICATION_RDF_NODEVISITOR_H
 
 #include <QSharedPointer>
 
 #include <syndication_export.h>
 
 namespace Syndication
 {
 namespace RDF
 {
 //@cond PRIVATE
 class Literal;
 typedef QSharedPointer<Literal> LiteralPtr;
 class Node;
 typedef QSharedPointer<Node> NodePtr;
 class Property;
 typedef QSharedPointer<Property> PropertyPtr;
 class Resource;
 typedef QSharedPointer<Resource> ResourcePtr;
 class Sequence;
 typedef QSharedPointer<Sequence> SequencePtr;
 //@endcond
 
 /**
  * Visitor interface, following the Visitor design pattern. Use this if you
  * want to process nodes and the way how to handle the nodes depends
  * on it's concrete type (e.g. Resource or Literal).
  *
  * TODO: insert code example
  *
  * @author Frank Osterfeld
  */
 class SYNDICATION_EXPORT NodeVisitor // krazy:exclude=dpointer
 {
 public:
     /**
      * destructor
      */
     virtual ~NodeVisitor();
 
     /**
      * call this method to handle a node. Depending on the concrete type
      * of the node, a specialized visit method is called.
      *
      * @param node the node to process
      */
     virtual void visit(NodePtr node);
 
     /**
      * reimplement this method to handle literals.
      *
      * @param item the literal to visit
      * @return whether the visitor handled the literal.
      * Reimplementations of this method must return @p true.
      */
     virtual bool visitLiteral(LiteralPtr);
 
     /**
      * reimplement this method to handle nodes that weren't handled
      * by the more specific method.
      *
      * @param node the node to visit
      * @return whether the visitor handled the node.
      * Reimplementations of this method must return @p true.
      */
     virtual bool visitNode(NodePtr node);
 
     /**
      * reimplement this method to handle properties.
      *
      * @param property the property to visit
      * @return whether the visitor handled the property.
      * Reimplementations of this method must return @p true.
      */
     virtual bool visitProperty(PropertyPtr property);
 
     /**
      * reimplement this method to handle resources.
      *
      * @param resource the resource to visit
      * @return whether the visitor handled the resource.
      * Reimplementations of this method must return @p true.
      */
     virtual bool visitResource(ResourcePtr resource);
 
     /**
      * reimplement this method to handle sequences.
      *
      * @param seq the sequence to visit
      * @return whether the visitor handled the sequence.
      * Reimplementations of this method must return @p true.
      */
     virtual bool visitSequence(SequencePtr seq);
 };
 
 } // namespace RDF
 } // namespace Syndication
 
 #endif // SYNDICATION_RDF_NODEVISITOR_H