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 "Utilities/TypeTraits/CreateHasTypeAlias.hpp"
       9              : 
      10              : namespace domain::BoundaryConditions {
      11              : CREATE_HAS_TYPE_ALIAS(boundary_conditions_base)
      12              : CREATE_HAS_TYPE_ALIAS_V(boundary_conditions_base)
      13              : 
      14              : namespace detail {
      15              : // used as passive error message
      16              : struct TheSystemHasNoBoundaryConditionsBaseTypeAlias {};
      17              : 
      18              : template <typename T, typename = std::void_t<>>
      19              : struct get_boundary_conditions_base {
      20              :   using type = TheSystemHasNoBoundaryConditionsBaseTypeAlias;
      21              : };
      22              : 
      23              : template <typename T>
      24              : struct get_boundary_conditions_base<
      25              :     T, std::void_t<typename T::boundary_conditions_base>> {
      26              :   using type = typename T::boundary_conditions_base;
      27              : };
      28              : }  // namespace detail
      29              : 
      30              : /// Returns `T::boundary_condition_base` or a placeholder class.
      31              : template <typename T>
      32            1 : using get_boundary_conditions_base =
      33              :     typename detail::get_boundary_conditions_base<T>::type;
      34              : }  // namespace domain::BoundaryConditions