as_const.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_UTILITY_AS_CONST_HPP
#define TETL_UTILITY_AS_CONST_HPP
 
#include <etl/_type_traits/add_const.hpp>
 
namespace etl {
 
/// \brief Forms lvalue reference to const type of t.
template <typename T>
[[nodiscard]] constexpr auto as_const(T& t) noexcept -> add_const_t<T>&
{
    return t; // NOLINT(bugprone-return-const-ref-from-parameter)
}
 
template <typename T>
constexpr auto as_const(T const&&) -> void = delete;
 
} // namespace etl
 
#endif // TETL_UTILITY_AS_CONST_HPP