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/Prefixes.hpp"  // IWYU pragma: keep
       7             : #include "DataStructures/Tensor/TypeAliases.hpp"
       8             : #include "Utilities/TMPL.hpp"
       9             : 
      10             : /// \cond
      11             : class DataVector;
      12             : // IWYU pragma: no_forward_declare Tensor
      13             : namespace Burgers {
      14             : namespace Tags {
      15             : struct U;
      16             : }  // namespace Tags
      17             : }  // namespace Burgers
      18             : namespace gsl {
      19             : template <typename T>
      20             : class not_null;
      21             : }  // namespace gsl
      22             : 
      23             : class DataVector;
      24             : /// \endcond
      25             : 
      26             : namespace Burgers {
      27             : /// Computes the time derivative terms needed for the Burgers system, which are
      28             : /// just the fluxes.
      29           1 : struct TimeDerivativeTerms {
      30           0 :   using temporary_tags = tmpl::list<>;
      31           0 :   using argument_tags = tmpl::list<Tags::U>;
      32             : 
      33           0 :   static void apply(
      34             :       // Time derivatives returned by reference. No source terms or
      35             :       // nonconservative products, so not used. All the tags in the
      36             :       // variables_tag in the system struct.
      37             :       gsl::not_null<Scalar<DataVector>*> /*non_flux_terms_dt_vars*/,
      38             : 
      39             :       // Fluxes returned by reference. Listed in the system struct as
      40             :       // flux_variables.
      41             :       gsl::not_null<tnsr::I<DataVector, 1, Frame::Inertial>*> flux_u,
      42             : 
      43             :       // Arguments listed in argument_tags above
      44             :       const Scalar<DataVector>& u);
      45             : };
      46             : }  // namespace Burgers