// Copyright(C) 1999-2017 National Technology & Engineering Solutions
// of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
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#ifndef IOSS_Ioss_IOFactory_h
#define IOSS_Ioss_IOFactory_h

#include <Ioss_CodeTypes.h>
#include <string>

#include <Ioss_DBUsage.h>
#include <Ioss_PropertyManager.h>

#include <map>
#include <vector>

/** \brief The main namespace for the Ioss library.
 */
namespace Ioss {

  class IOFactory;

  using NameList     = std::vector<std::string>;
  using IOFactoryMap = std::map<std::string, IOFactory *, std::less<std::string>>;

  class DatabaseIO;

  /** \brief The main public user interface for creating Ioss::DatabaseIO objects.
   */
  class IOFactory
  {
  public:
    virtual ~IOFactory() = default;
    static DatabaseIO *create(const std::string &type, const std::string &filename,
                              DatabaseUsage db_usage, MPI_Comm communicator = MPI_COMM_WORLD,
                              const Ioss::PropertyManager &properties = Ioss::PropertyManager());

    static int  describe(NameList *names);
    static void clean();

  protected:
    explicit IOFactory(const std::string &type);

    virtual DatabaseIO *make_IO(const std::string &filename, DatabaseUsage db_usage,
                                MPI_Comm                     communicator,
                                const Ioss::PropertyManager &properties) const = 0;

    static void alias(const std::string &base, const std::string &syn);

  private:
    static IOFactoryMap *registry();
  };
} // namespace Ioss
#endif
