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/************************************************************************
*
* Copyright (C) 2022-2023 IRCAD France
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
//-----------------------------------------------------------------------------
#pragma once
namespace sight::core
{
namespace detail
{
//------------------------------------------------------------------------------
template<typename T>
struct deduce_type;
template<typename RETURN_TYPE, typename CLASS_TYPE, typename ... ARGS>
struct deduce_type<RETURN_TYPE (CLASS_TYPE::*)(ARGS ...) const>
{
using type = std::function<RETURN_TYPE(ARGS ...)>;
};
} // namespace detail
template<typename CLOSURE>
using lambda_to_function_t = typename detail::deduce_type<decltype(&CLOSURE::operator())>::type;
//------------------------------------------------------------------------------
/// Converts a lambda to a std::function, used to convert template arguments
template<typename CLOSURE>
auto lambda_to_function(const CLOSURE& _fn)
{
return lambda_to_function_t<CLOSURE>(_fn);
}
//------------------------------------------------------------------------------
} // namespace sight::core
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