make_tuple.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_TUPLE_MAKE_TUPLE_HPP
#define TETL_TUPLE_MAKE_TUPLE_HPP
 
#include <etl/_functional/reference_wrapper.hpp>
#include <etl/_tuple/tuple.hpp>
#include <etl/_type_traits/decay.hpp>
#include <etl/_utility/forward.hpp>
 
namespace etl {
namespace detail {
template <typename T>
struct unwrap_refwrapper {
    using type = T;
};
 
template <typename T>
struct unwrap_refwrapper<reference_wrapper<T>> {
    using type = T&;
};
 
template <typename T>
using unwrap_decay_t = typename unwrap_refwrapper<decay_t<T>>::type;
 
} // namespace detail
 
/// \brief Creates a tuple object, deducing the target type from the types of
/// arguments.
template <typename... Args>
[[nodiscard]] constexpr auto make_tuple(Args&&... args)
{
    return etl::tuple<etl::detail::unwrap_decay_t<Args>...>(etl::forward<Args>(args)...);
}
} // namespace etl
 
#endif // TETL_TUPLE_MAKE_TUPLE_HPP