variablesadapter.hh

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
//
// SPDX-FileCopyrightText: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef DUMUX_CVFE_LOCAL_VARIABLES_ADAPTER_HH
#define DUMUX_CVFE_LOCAL_VARIABLES_ADAPTER_HH
 
#include <dune/common/std/type_traits.hh>
#include <dumux/common/concepts/ipdata_.hh>
 
namespace Dumux::Detail::CVFE {
 
template<class Imp, class ES, class P, class E, class SCV>
using UpdateFunctionDetector = decltype(
    std::declval<Imp>().update(std::declval<ES>(), std::declval<P>(), std::declval<E>(), std::declval<SCV>())
);
 
template<class Imp, class ES, class P, class E, class SCV>
constexpr inline bool hasUpdateFunctionForScvs()
{ return Dune::Std::is_detected<UpdateFunctionDetector, Imp, ES, P, E, SCV>::value; }
 
template <class VolumeVariables>
class VariablesAdapter : public VolumeVariables
{
public:
    using PrimaryVariables = typename VolumeVariables::PrimaryVariables;
 
    using Indices = typename VolumeVariables::Indices;
 
    using VolumeVariables::update;
    template<class ElementSolution, class Problem, class FVElementGeometry, Concept::LocalDofIpData IpData>
    void update(const ElementSolution& elemSol,
                const Problem& problem,
                const FVElementGeometry& fvGeometry,
                const IpData& ipData)
    {
        // As default we assume that for each localDof there is a corresponding scv
        // such that the update interface of VolumeVariables can still be used.
        if constexpr (hasUpdateFunctionForScvs<VolumeVariables, ElementSolution, Problem,
                      typename FVElementGeometry::Element, typename FVElementGeometry::SubControlVolume>())
            VolumeVariables::update(elemSol, problem, fvGeometry.element(), fvGeometry.scv(ipData.localDofIndex()));
        else
            VolumeVariables::update(elemSol, problem, fvGeometry, ipData);
    };
};
 
} // end namespace Dumux
 
#endif