modelvisitor.h

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#ifndef MODELVISITOR_H
#define MODELVISITOR_H
 
#include <utility> // move, forward
 
#include <nodes/NodeDataModel>
 
#include "visitor.h" // Visitor
#include "visitablewith.h" // VisitableWith
 
 
class CanRawViewModel;
class CanRawSenderModel;
class CanDeviceModel;
 
struct CanNodeDataModelVisitor
  : Visitor<
        CanNodeDataModelVisitor  // tag, not visitable type!
      , CanRawViewModel
      , CanRawSenderModel
      , CanDeviceModel
//    , Other
      >
{
    using Visitor::Visitor;
};
 
 
inline void apply_model_visitor(QtNodes::NodeDataModel& m, CanNodeDataModelVisitor v)
{
    // NOTE: Cannot use static_cast since NodeDataModel and VisitableWith
    //       are not in direct inheritance relation, i.e. only type derived
    //       from NodeDataModel derives from VisitableWith.
 
    dynamic_cast<VisitableWith<CanNodeDataModelVisitor>&>(m).visit(v);  // throws!
}
 
template<class... Actions>
inline void apply_model_visitor(QtNodes::NodeDataModel& m, Actions&&... actions)
{
    CanNodeDataModelVisitor v{std::forward<Actions>(actions)...};
 
    apply_model_visitor(m, std::move(v));
}
 
#endif