VariablesLister.h

#include <kDB/SPARQL/Algebra/NodeVisitor.h>
 
namespace kDB::SPARQL::Algebra::Visitors
{
  class VariablesLister : public Algebra::NodeVisitor<void>
  {
    VariablesLister();
    ~VariablesLister();
  public:
    static QStringList list(NodeCSP _root);
  private:
    void visit(Algebra::VariableReferenceCSP _node) override;
    void visit(kDB::SPARQL::Algebra::BindCSP _node) override;
    QStringList names() const;
  private:
    struct Private;
    Private* const d;
  };
} // namespace kDB::SPARQL::Algebra::Visitors