has_function.hpp

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/*
  Copyright 2022-2023 SINTEF AS
 
  This file is part of the Open Porous Media project (OPM).
 
  OPM is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  OPM is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OPM_CUISTL_DETAIL_HAS_FUNCTION_HPP
#define OPM_CUISTL_DETAIL_HAS_FUNCTION_HPP
#include <type_traits>
namespace Opm::cuistl::detail
{
 
template <typename T>
class has_should_call_pre
{
    template <typename U>
    static std::true_type test(decltype(&U::shouldCallPre));
    template <typename U>
    static std::false_type test(...);
 
public:
    static constexpr bool value = std::is_same_v<decltype(test<T>(0)), std::true_type>;
};
 
template <typename T>
class has_should_call_post
{
    template <typename U>
    static std::true_type test(decltype(&U::shouldCallPost));
    template <typename U>
    static std::false_type test(...);
 
public:
    static constexpr bool value = std::is_same_v<decltype(test<T>(0)), std::true_type>;
};
 
 
template <typename T>
class has_communication
{
    template <typename U>
    static std::true_type test(decltype(&U::getCommunication));
    template <typename U>
    static std::false_type test(...);
 
public:
    static constexpr bool value = std::is_same_v<decltype(test<T>(0)), std::true_type>;
};
 
template <typename T>
class is_a_well_operator
{
    template <typename U>
    static std::true_type test(decltype(&U::addWellPressureEquations));
    template <typename U>
    static std::false_type test(...);
 
public:
    static constexpr bool value = std::is_same_v<decltype(test<T>(0)), std::true_type>;
};
 
} // namespace Opm::cuistl::detail
#endif