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0001 /* A very simple result type
0002 (C) 2017-2024 Niall Douglas <http://www.nedproductions.biz/> (8 commits)
0003 File Created: June 2017
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_STD_RESULT_HPP
0032 #define BOOST_OUTCOME_STD_RESULT_HPP
0033 
0034 #include "basic_result.hpp"
0035 #include "detail/trait_std_error_code.hpp"
0036 #include "detail/trait_std_exception.hpp"
0037 
0038 #include "policy/fail_to_compile_observers.hpp"
0039 #include "policy/result_error_code_throw_as_system_error.hpp"
0040 #include "policy/result_exception_ptr_rethrow.hpp"
0041 #include "policy/throw_bad_result_access.hpp"
0042 
0043 BOOST_OUTCOME_V2_NAMESPACE_EXPORT_BEGIN
0044 
0045 /*! AWAITING HUGO JSON CONVERSION TOOL 
0046 SIGNATURE NOT RECOGNISED
0047 */
0048 namespace policy
0049 {
0050   /*! AWAITING HUGO JSON CONVERSION TOOL 
0051 SIGNATURE NOT RECOGNISED
0052 */
0053   template <class T, class EC, class E>
0054   using default_policy = std::conditional_t<  //
0055   std::is_void<EC>::value && std::is_void<E>::value,
0056   terminate,                                                                                                                     //
0057   std::conditional_t<                                                                                                            //
0058   trait::is_error_code_available<EC>::value, error_code_throw_as_system_error<T, EC, E>,                                         //
0059   std::conditional_t<                                                                                                            //
0060   trait::is_exception_ptr_available<EC>::value || trait::is_exception_ptr_available<E>::value, exception_ptr_rethrow<T, EC, E>,  //
0061   fail_to_compile_observers                                                                                                      //
0062   >>>;
0063 }  // namespace policy
0064 
0065 /*! AWAITING HUGO JSON CONVERSION TOOL 
0066 SIGNATURE NOT RECOGNISED
0067 */
0068 template <class R, class S = std::error_code, class NoValuePolicy = policy::default_policy<R, S, void>>  //
0069 using std_result = basic_result<R, S, NoValuePolicy>;
0070 
0071 /*! AWAITING HUGO JSON CONVERSION TOOL 
0072 type alias template <class R, class S = std::error_code> std_unchecked. Potential doc page: `std_unchecked<T, E = std::error_code>`
0073 */
0074 template <class R, class S = std::error_code> using std_unchecked = std_result<R, S, policy::all_narrow>;
0075 
0076 /*! AWAITING HUGO JSON CONVERSION TOOL 
0077 type alias template <class R, class S = std::error_code> std_checked. Potential doc page: `std_checked<T, E = std::error_code>`
0078 */
0079 template <class R, class S = std::error_code> using std_checked = std_result<R, S, policy::throw_bad_result_access<S, void>>;
0080 
0081 BOOST_OUTCOME_V2_NAMESPACE_END
0082 
0083 #endif