/* A less simple result type
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(C) 2018-2020 Niall Douglas <http://www.nedproductions.biz/> (17 commits)
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File Created: Apr 2018
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#ifndef BOOST_OUTCOME_EXPERIMENTAL_STATUS_OUTCOME_HPP
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#define BOOST_OUTCOME_EXPERIMENTAL_STATUS_OUTCOME_HPP
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#include "../basic_outcome.hpp"
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#include "../detail/trait_std_exception.hpp"
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#include "status_result.hpp"
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#include "boost/exception_ptr.hpp"
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BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE_BEGIN
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template <class DomainType> inline std::exception_ptr basic_outcome_failure_exception_from_error(const status_code<DomainType> &sc)
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{
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(void) sc;
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#ifndef BOOST_NO_EXCEPTIONS
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try
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{
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sc.throw_exception();
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}
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catch(...)
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{
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return std::current_exception();
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}
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#endif
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return {};
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}
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BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE_END
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BOOST_OUTCOME_V2_NAMESPACE_EXPORT_BEGIN
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namespace experimental
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{
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namespace policy
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{
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template <class T, class EC, class E>
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using default_status_outcome_policy = std::conditional_t< //
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std::is_void<EC>::value && std::is_void<E>::value, //
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BOOST_OUTCOME_V2_NAMESPACE::policy::terminate, //
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std::conditional_t<(is_status_code<EC>::value || is_errored_status_code<EC>::value) && (std::is_void<E>::value || BOOST_OUTCOME_V2_NAMESPACE::trait::is_exception_ptr_available<E>::value), //
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status_code_throw<T, EC, E>, //
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BOOST_OUTCOME_V2_NAMESPACE::policy::fail_to_compile_observers //
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>>;
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} // namespace policy
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/*! AWAITING HUGO JSON CONVERSION TOOL
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SIGNATURE NOT RECOGNISED
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*/
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template <class R, class S = system_code, class P = std::exception_ptr, class NoValuePolicy = policy::default_status_outcome_policy<R, S, P>> //
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using status_outcome = basic_outcome<R, S, P, NoValuePolicy>;
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namespace policy
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{
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template <class T, class DomainType, class E> struct status_code_throw<T, status_code<DomainType>, E> : base
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{
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using _base = base;
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template <class Impl> static constexpr void wide_value_check(Impl &&self)
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{
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if(!base::_has_value(static_cast<Impl &&>(self)))
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{
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if(base::_has_exception(static_cast<Impl &&>(self)))
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{
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BOOST_OUTCOME_V2_NAMESPACE::policy::detail::_rethrow_exception<trait::is_exception_ptr_available<E>::value>(base::_exception<T, status_code<DomainType>, E, status_code_throw>(static_cast<Impl &&>(self))); // NOLINT
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}
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if(base::_has_error(static_cast<Impl &&>(self)))
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{
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#ifndef BOOST_NO_EXCEPTIONS
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base::_error(static_cast<Impl &&>(self)).throw_exception();
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#else
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BOOST_OUTCOME_THROW_EXCEPTION("wide value check failed");
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#endif
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}
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}
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}
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template <class Impl> static constexpr void wide_error_check(Impl &&self) { _base::narrow_error_check(static_cast<Impl &&>(self)); }
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template <class Impl> static constexpr void wide_exception_check(Impl &&self) { _base::narrow_exception_check(static_cast<Impl &&>(self)); }
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};
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template <class T, class DomainType, class E> struct status_code_throw<T, errored_status_code<DomainType>, E> : status_code_throw<T, status_code<DomainType>, E>
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{
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status_code_throw() = default;
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using status_code_throw<T, status_code<DomainType>, E>::status_code_throw;
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};
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} // namespace policy
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} // namespace experimental
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BOOST_OUTCOME_V2_NAMESPACE_END
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#endif
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