boost/cobalt/gather.hpp

0001 //
0002 // Copyright (c) 2022 Klemens Morgenstern (klemens.morgenstern@gmx.net)
0003 //
0004 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0005 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 //
0007
0008 #ifndef BOOST_COBALT_GATHER_HPP
0009 #define BOOST_COBALT_GATHER_HPP
0010
0011 #include <boost/cobalt/concepts.hpp>
0012 #include <boost/cobalt/detail/gather.hpp>
0013
0014 namespace boost::cobalt
0015 {
0016
0017
0018 template<awaitable ... Promise>
0019 auto gather(Promise && ... p)
0020 {
0021   return detail::gather_variadic_impl<Promise ...>(
0022       static_cast<Promise&&>(p)...);
0023 }
0024
0025
0026 template<typename PromiseRange>
0027   requires awaitable<std::decay_t<decltype(*std::declval<PromiseRange>().begin())>>
0028 auto gather(PromiseRange && p)
0029 {
0030   return detail::gather_ranged_impl<PromiseRange>{static_cast<PromiseRange&&>(p)};
0031 }
0032
0033
0034
0035 }
0036
0037
0038 #endif //BOOST_COBALT_GATHER_HPP