Line data    Source code

       1            0 : // Distributed under the MIT License.
       2              : // See LICENSE.txt for details.
       3              : 
       4              : #pragma once
       5              : 
       6              : #include "DataStructures/DataBox/PrefixHelpers.hpp"
       7              : #include "DataStructures/DataBox/Tag.hpp"
       8              : #include "DataStructures/VariablesTag.hpp"
       9              : #include "Evolution/DgSubcell/ActiveGrid.hpp"
      10              : 
      11              : /// \cond
      12              : template <typename TagsList>
      13              : class Variables;
      14              : /// \endcond
      15              : 
      16              : namespace evolution::dg::subcell::Tags {
      17              : /// Mark a tag as holding data for the inactive grid.
      18              : ///
      19              : /// As an example, if the evolution in the element is currently being done on
      20              : /// the DG grid then the subcell evolved variables would be in
      21              : /// `Inactive<evolved_vars>`.
      22              : template <typename Tag>
      23            1 : struct Inactive : db::PrefixTag, db::SimpleTag {
      24            0 :   using tag = Tag;
      25            0 :   using type = typename tag::type;
      26              : };
      27              : 
      28              : /// \cond
      29              : // This tag currently exposes its constituents as subitems. Possible
      30              : // compile-time optimization: Remove this template specialization and use
      31              : // `Inactive<VariablesTag<tmpl::list<Tag1, Tag2>>>` instead of the individual
      32              : // `Inactive<Tag1>`.
      33              : template <typename TagList>
      34              : struct Inactive<::Tags::Variables<TagList>>
      35              :     : ::Tags::Variables<db::wrap_tags_in<Inactive, TagList>> {
      36              :   using tag = ::Tags::Variables<TagList>;
      37              :   using type = Variables<db::wrap_tags_in<Inactive, TagList>>;
      38              : };
      39              : /// \endcond
      40              : }  // namespace evolution::dg::subcell::Tags