/usr/include/KF5/Syndication/syndication/rdf/nodevisitor.h is in libkf5syndication-dev 15.12.3-0ubuntu1.
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* This file is part of the syndication library
*
* Copyright (C) 2006 Frank Osterfeld <osterfeld@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#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
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