1 /* Proposed SG14 status_code 2 (C) 2018-2020 Niall Douglas <http://www.nedproductions.biz/> (5 commits) 3 File Created: Feb 2018 4 5 6 Boost Software License - Version 1.0 - August 17th, 2003 7 8 Permission is hereby granted, free of charge, to any person or organization 9 obtaining a copy of the software and accompanying documentation covered by 10 this license (the "Software") to use, reproduce, display, distribute, 11 execute, and transmit the Software, and to prepare derivative works of the 12 Software, and to permit third-parties to whom the Software is furnished to 13 do so, all subject to the following: 14 15 The copyright notices in the Software and this entire statement, including 16 the above license grant, this restriction and the following disclaimer, 17 must be included in all copies of the Software, in whole or in part, and 18 all derivative works of the Software, unless such copies or derivative 19 works are solely in the form of machine-executable object code generated by 20 a source language processor. 21 22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 23 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 24 FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT 25 SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 26 FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, 27 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 28 DEALINGS IN THE SOFTWARE. 29 */ 30 31 #ifndef BOOST_OUTCOME_SYSTEM_ERROR2_SYSTEM_CODE_HPP 32 #define BOOST_OUTCOME_SYSTEM_ERROR2_SYSTEM_CODE_HPP 33 34 #ifndef BOOST_OUTCOME_SYSTEM_ERROR2_NOT_POSIX 35 #include "posix_code.hpp" 36 #else 37 #include "quick_status_code_from_enum.hpp" 38 #endif 39 40 #if defined(_WIN32) || defined(BOOST_OUTCOME_STANDARDESE_IS_IN_THE_HOUSE) 41 #include "nt_code.hpp" 42 #include "win32_code.hpp" 43 // NOT "com_code.hpp" 44 #endif 45 46 BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE_BEGIN 47 /*! An erased-mutable status code suitably large for all the system codes 48 which can be returned on this system. 49 50 For Windows, these might be: 51 52 - `com_code` (`HRESULT`) [you need to include "com_code.hpp" explicitly for this] 53 - `nt_code` (`LONG`) 54 - `win32_code` (`DWORD`) 55 56 For POSIX, `posix_code` is possible. 57 58 You are guaranteed that `system_code` can be transported by the compiler 59 in exactly two CPU registers. 60 */ 61 using system_code = status_code<erased<intptr_t>>; 62 63 #ifndef NDEBUG 64 static_assert(sizeof(system_code) == 2 * sizeof(void *), "system_code is not exactly two pointers in size!"); 65 static_assert(traits::is_move_bitcopying<system_code>::value, "system_code is not move bitcopying!"); 66 #endif 67 68 BOOST_OUTCOME_SYSTEM_ERROR2_NAMESPACE_END 69 70 #endif 71