Line data    Source code

       1            0 : // Distributed under the MIT License.
       2              : // See LICENSE.txt for details.
       3              : 
       4              : #pragma once
       5              : 
       6              : #include <type_traits>
       7              : 
       8              : #include "DataStructures/DataBox/DataBox.hpp"
       9              : #include "Evolution/DgSubcell/ActiveGrid.hpp"
      10              : #include "Evolution/DgSubcell/Tags/ActiveGrid.hpp"
      11              : 
      12              : namespace evolution::dg::subcell {
      13              : /// \brief Retrieve a tag from the active grid.
      14              : template <typename DgTag, typename SubcellTag, typename DbTagsList>
      15            1 : const typename DgTag::type& get_active_tag(const db::DataBox<DbTagsList>& box) {
      16              :   static_assert(
      17              :       std::is_same_v<typename DgTag::type, typename SubcellTag::type>);
      18              :   if (db::get<Tags::ActiveGrid>(box) == ActiveGrid::Subcell) {
      19              :     return db::get<SubcellTag>(box);
      20              :   }
      21              :   return db::get<DgTag>(box);
      22              : }
      23              : 
      24              : /// \brief Retrieve a tag from the inactive grid.
      25              : template <typename DgTag, typename SubcellTag, typename DbTagsList>
      26            1 : const typename DgTag::type& get_inactive_tag(
      27              :     const db::DataBox<DbTagsList>& box) {
      28              :   static_assert(
      29              :       std::is_same_v<typename DgTag::type, typename SubcellTag::type>);
      30              :   if (db::get<Tags::ActiveGrid>(box) == ActiveGrid::Subcell) {
      31              :     return db::get<DgTag>(box);
      32              :   }
      33              :   return db::get<SubcellTag>(box);
      34              : }
      35              : }  // namespace evolution::dg::subcell