outcome/experimental/coroutine_support.hpp

0001 /* Tells C++ coroutines about Outcome's result
0002 (C) 2019-2024 Niall Douglas <http://www.nedproductions.biz/> (12 commits)
0003 File Created: Oct 2019
0004
0005
0006 Boost Software License - Version 1.0 - August 17th, 2003
0007
0008 Permission is hereby granted, free of charge, to any person or organization
0009 obtaining a copy of the software and accompanying documentation covered by
0010 this license (the "Software") to use, reproduce, display, distribute,
0011 execute, and transmit the Software, and to prepare derivative works of the
0012 Software, and to permit third-parties to whom the Software is furnished to
0013 do so, all subject to the following:
0014
0015 The copyright notices in the Software and this entire statement, including
0016 the above license grant, this restriction and the following disclaimer,
0017 must be included in all copies of the Software, in whole or in part, and
0018 all derivative works of the Software, unless such copies or derivative
0019 works are solely in the form of machine-executable object code generated by
0020 a source language processor.
0021
0022 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0023 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0024 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
0025 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
0026 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
0027 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
0028 DEALINGS IN THE SOFTWARE.
0029 */
0030
0031 #ifndef BOOST_OUTCOME_EXPERIMENTAL_COROUTINE_SUPPORT_HPP
0032 #define BOOST_OUTCOME_EXPERIMENTAL_COROUTINE_SUPPORT_HPP
0033
0034 #include "../config.hpp"
0035
0036 #define BOOST_OUTCOME_COROUTINE_SUPPORT_NAMESPACE_BEGIN                                                                                                                                                                                                                                                                              \
0037   BOOST_OUTCOME_V2_NAMESPACE_BEGIN namespace experimental                                                                                                                                                                                                                                                                            \
0038   {                                                                                                                                                                                                                                                                                                                            \
0039     namespace awaitables                                                                                                                                                                                                                                                                                                       \
0040     {
0041 //
0042 #define BOOST_OUTCOME_COROUTINE_SUPPORT_NAMESPACE_EXPORT_BEGIN                                                                                                                                                                                                                                                                       \
0043   BOOST_OUTCOME_V2_NAMESPACE_EXPORT_BEGIN namespace experimental                                                                                                                                                                                                                                                                     \
0044   {                                                                                                                                                                                                                                                                                                                            \
0045     namespace awaitables                                                                                                                                                                                                                                                                                                       \
0046     {
0047 //
0048 #define BOOST_OUTCOME_COROUTINE_SUPPORT_NAMESPACE_END                                                                                                                                                                                                                                                                                \
0049   }                                                                                                                                                                                                                                                                                                                            \
0050   }                                                                                                                                                                                                                                                                                                                            \
0051   BOOST_OUTCOME_V2_NAMESPACE_END
0052
0053 #ifndef BOOST_NO_EXCEPTIONS
0054 #if !BOOST_OUTCOME_USE_SYSTEM_STATUS_CODE && __has_include("status-code/system_code_from_exception.hpp")
0055 #include "status-code/system_code_from_exception.hpp"
0056 #else
0057 #include <status-code/system_code_from_exception.hpp>
0058 #endif
0059 BOOST_OUTCOME_V2_NAMESPACE_BEGIN
0060 namespace awaitables
0061 {
0062   namespace detail
0063   {
0064     inline bool error_is_set(BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::system_code &sc) noexcept { return sc.failure(); }
0065     inline BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::system_code error_from_exception(std::exception_ptr &&ep = std::current_exception(), BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::system_code not_matched = BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::generic_code(BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::errc::resource_unavailable_try_again)) noexcept
0066     {
0067       return BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::system_code_from_exception(static_cast<std::exception_ptr &&>(ep), static_cast<BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE::system_code &&>(not_matched));
0068     }
0069   }  // namespace detail
0070 }  // namespace awaitables
0071 BOOST_OUTCOME_V2_NAMESPACE_END
0072 #endif
0073
0074 #include "../detail/coroutine_support.ipp"
0075
0076 #undef BOOST_OUTCOME_COROUTINE_SUPPORT_NAMESPACE_BEGIN
0077 #undef BOOST_OUTCOME_COROUTINE_SUPPORT_NAMESPACE_EXPORT_BEGIN
0078 #undef BOOST_OUTCOME_COROUTINE_SUPPORT_NAMESPACE_END
0079
0080 #endif