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// // detail/initiation_base.hpp // ~~~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #ifndef BOOST_ASIO_DETAIL_INITIATION_BASE_HPP #define BOOST_ASIO_DETAIL_INITIATION_BASE_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/config.hpp> #include <boost/asio/detail/type_traits.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace detail { template <typename Initiation, typename = void> class initiation_base : public Initiation { public: template <typename I> explicit initiation_base(I&& initiation) : Initiation(static_cast<I&&>(initiation)) { } }; template <typename Initiation> class initiation_base<Initiation, enable_if_t<!is_class<Initiation>::value>> { public: template <typename I> explicit initiation_base(I&& initiation) : initiation_(static_cast<I&&>(initiation)) { } template <typename... Args> void operator()(Args&&... args) const { initiation_(static_cast<Args&&>(args)...); } private: Initiation initiation_; }; } // namespace detail } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_DETAIL_INITIATION_BASE_HPP