text: // Copyright(C) 1999-2017 National Technology & Engineering Solutions
  // of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
  // NTESS, the U.S. Government retains certain rights in this software.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //     * Redistributions of source code must retain the above copyright
  //       notice, this list of conditions and the following disclaimer.
  //
  //     * Redistributions in binary form must reproduce the above
  //       copyright notice, this list of conditions and the following
  //       disclaimer in the documentation and/or other materials provided
  //       with the distribution.
  //
  //     * Neither the name of NTESS nor the names of its
  //       contributors may be used to endorse or promote products derived
  //       from this software without specific prior written permission.
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  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  #ifndef IOSS_Ioss_FaceBlock_h
  #define IOSS_Ioss_FaceBlock_h
  
  #include "Ioss_EntityType.h" // for EntityType, etc
  #include <Ioss_EntityBlock.h>
  #include <Ioss_Property.h> // for Property
  #include <cstddef>         // for size_t
  #include <cstdint>         // for int64_t
  #include <string>          // for string
  namespace Ioss {
    class DatabaseIO;
  } // namespace Ioss
  namespace Ioss {
    class Field;
  } // namespace Ioss
  
  namespace Ioss {
  
    /** \brief A collection of element faces with the same topology.
     */
    class FaceBlock : public EntityBlock
    {
    public:
      FaceBlock(DatabaseIO *io_database, const std::string &my_name, const std::string &face_type,
                int64_t number_faces);
  
      ~FaceBlock() override;
  
      std::string type_string() const override { return "FaceBlock"; }
      std::string short_type_string() const override { return "faceblock"; }
      EntityType  type() const override { return FACEBLOCK; }
  
      // Handle implicit properties -- These are calcuated from data stored
      // in the grouping entity instead of having an explicit value assigned.
      // An example would be 'face_block_count' for a region.
      Property get_implicit_property(const std::string &my_name) const override;
  
    protected:
      int64_t internal_get_field_data(const Field &field, void *data,
                                      size_t data_size) const override;
  
      int64_t internal_put_field_data(const Field &field, void *data,
                                      size_t data_size) const override;
    };
  } // namespace Ioss
  #endif
  