| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2025 Vinnie Falco (vinnie dot falco at gmail dot com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/beast2 | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_BEAST2_SERVER_CALL_MF_HPP | ||
| 11 | #define BOOST_BEAST2_SERVER_CALL_MF_HPP | ||
| 12 | |||
| 13 | #include <boost/beast2/detail/config.hpp> | ||
| 14 | #include <type_traits> | ||
| 15 | #include <utility> | ||
| 16 | |||
| 17 | namespace boost { | ||
| 18 | namespace beast2 { | ||
| 19 | |||
| 20 | namespace detail { | ||
| 21 | // Primary template | ||
| 22 | template<class> | ||
| 23 | struct result_of; | ||
| 24 | |||
| 25 | // Partial specialization for callable types | ||
| 26 | template<class F, class... Args> | ||
| 27 | struct result_of<F(Args...)> | ||
| 28 | { | ||
| 29 | private: | ||
| 30 | template<class G, class... A> | ||
| 31 | static auto test(int) -> decltype(std::declval<G>()(std::declval<A>()...)); | ||
| 32 | |||
| 33 | template<class, class...> | ||
| 34 | static void test(...); | ||
| 35 | |||
| 36 | public: | ||
| 37 | using type = decltype(test<F, Args...>(0)); | ||
| 38 | }; | ||
| 39 | template<class T> | ||
| 40 | using result_of_t = typename result_of<T>::type; | ||
| 41 | } // detail | ||
| 42 | |||
| 43 | template<class T, class MemFn> | ||
| 44 | class call_mf_impl | ||
| 45 | { | ||
| 46 | T* obj_; | ||
| 47 | MemFn memfn_; | ||
| 48 | |||
| 49 | public: | ||
| 50 | ✗ | call_mf_impl(T* obj, MemFn memfn) | |
| 51 | ✗ | : obj_(obj), memfn_(memfn) | |
| 52 | { | ||
| 53 | ✗ | } | |
| 54 | |||
| 55 | template<class... Args> | ||
| 56 | ✗ | auto operator()(Args&&... args) const | |
| 57 | -> detail::result_of_t<MemFn(T*, Args&&...)> | ||
| 58 | { | ||
| 59 | ✗ | return (obj_->*memfn_)(std::forward<Args>(args)...); | |
| 60 | } | ||
| 61 | }; | ||
| 62 | |||
| 63 | template<class MemFn, class T> | ||
| 64 | ✗ | inline call_mf_impl<T, MemFn> call_mf(MemFn memfn, T* obj) | |
| 65 | { | ||
| 66 | ✗ | return call_mf_impl<T, MemFn>(obj, memfn); | |
| 67 | } | ||
| 68 | |||
| 69 | } // beast2 | ||
| 70 | } // boost | ||
| 71 | |||
| 72 | #endif | ||
| 73 |