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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightText: Copyright © DUNE Project contributors, see file AUTHORS.md
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception OR LGPL-3.0-or-later
#ifndef DUNE_FUNCTIONS_GRIDFUNCTIONS_GRID_FUNCTION_IMP_HH
#define DUNE_FUNCTIONS_GRIDFUNCTIONS_GRID_FUNCTION_IMP_HH
#include <dune/functions/common/type_traits.hh>
#include <dune/functions/common/interfaces.hh>
#include <dune/functions/common/differentiablefunction_imp.hh>
namespace Dune {
namespace Functions {
namespace Imp {
/**
* A concept describing types that have a localFunction() method found by ADL
*/
struct HasFreeLocalFunction
{
template<class F>
auto require(F&& f) -> decltype(
localFunction(f)
);
};
// Interface of type erasure wrapper
//
// Notice that the basic interface of polymorphic classes (destructor, clone, ...)
// will be added by the type erasure foundation classes.
template<class Signature, class DerivativeInterface, class LocalFunctionInterface, class EntitySet>
class GridFunctionWrapperInterface :
public DifferentiableFunctionWrapperInterface<Signature, DerivativeInterface>
{
public:
virtual LocalFunctionInterface wrappedLocalFunction() const = 0;
virtual const EntitySet& wrappedEntitySet() const = 0;
};
// Implementation of type erasure wrapper
template<class Signature, class DerivativeInterface, class LocalFunctionInterface, class EntitySet, class B>
class GridFunctionWrapperImplementation :
public DifferentiableFunctionWrapperImplementation<Signature, DerivativeInterface, B>
{
using Base = DifferentiableFunctionWrapperImplementation<Signature, DerivativeInterface, B>;
public:
using Base::Base;
virtual LocalFunctionInterface wrappedLocalFunction() const
{
return localFunction(this->get());
}
virtual const EntitySet& wrappedEntitySet() const
{
return this->get().entitySet();
}
};
}}} // namespace Dune::Functions::Imp
#endif // DUNE_FUNCTIONS_GRIDFUNCTIONS_GRID_FUNCTION_IMP_HH
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