.. _program_listing_file_mesh_handle_competence_pack.hxx:

Program Listing for File competence_pack.hxx
============================================

|exhale_lsh| :ref:`Return to documentation for file <file_mesh_handle_competence_pack.hxx>` (``mesh_handle/competence_pack.hxx``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /*
     This file is part of t8code.
     t8code is a C library to manage a collection (a forest) of multiple
     connected adaptive space-trees of general element classes in parallel.
   
     Copyright (C) 2026 the developers
   
     t8code is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
   
     t8code 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 General Public License for more details.
   
     You should have received a copy of the GNU General Public License
     along with t8code; if not, write to the Free Software Foundation, Inc.,
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   */
   
   #pragma once
   
   #include "competences.hxx"
   #include "data_handler.hxx"
   #include "internal/competence_pack_union.hxx"
   namespace t8_mesh_handle
   {
   // --- Element competence pack. ---
   template <template <typename> class... TElementCompetence>
   struct element_competence_pack
   {
     template <typename TMeshClass, template <typename, template <typename> class...> class Target>
     using apply = Target<TMeshClass, TElementCompetence...>;
   
     using is_element_competence_pack = void; 
   };
   
   using empty_element_competences = element_competence_pack<>;
   
   using all_cache_element_competences
     = element_competence_pack<cache_volume, cache_diameter, cache_vertex_coordinates, cache_centroid, cache_face_areas,
                               cache_face_centroids, cache_face_normals, cache_neighbors>;
   
   using cache_face_element_competences
     = element_competence_pack<cache_face_areas, cache_face_centroids, cache_face_normals, cache_neighbors>;
   
   using data_element_competences = element_competence_pack<element_data_element_competence>;
   
   // --- Mesh competence pack. ---
   template <template <typename> class... TMeshCompetence>
   struct mesh_competence_pack
   {
     template <typename TMesh>
     struct apply: public TMeshCompetence<TMesh>...
     {
     };
   
     using is_mesh_competence_pack = void; 
   };
   
   using empty_mesh_competences = mesh_competence_pack<>;
   
   template <T8MPISafeType TElementDataType>
   using data_mesh_competences = mesh_competence_pack<element_data_mesh_competence<TElementDataType>::template type>;
   
   // --- Compute union of competence packs. ---
   template <typename... TPacks>
   using union_competence_packs_type = typename detail::union_competence_packs<TPacks...>::type;
   
   }  // namespace t8_mesh_handle