1#ifndef BOOST_SYSTEM_DETAIL_GENERIC_CATEGORY_HPP_INCLUDED
2#define BOOST_SYSTEM_DETAIL_GENERIC_CATEGORY_HPP_INCLUDED
3
4// Copyright Beman Dawes 2006, 2007
5// Copyright Christoper Kohlhoff 2007
6// Copyright Peter Dimov 2017, 2018
7//
8// Distributed under the Boost Software License, Version 1.0. (See accompanying
9// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
10//
11// See library home page at http://www.boost.org/libs/system
12
13#include <boost/system/detail/error_category.hpp>
14#include <boost/system/detail/generic_category_message.hpp>
15#include <boost/system/detail/config.hpp>
16#include <boost/config.hpp>
17
18namespace boost
19{
20
21namespace system
22{
23
24namespace detail
25{
26
27// generic_error_category
28
29#if ( defined( BOOST_GCC ) && BOOST_GCC >= 40600 ) || defined( BOOST_CLANG )
30#pragma GCC diagnostic push
31#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
32#endif
33
34class BOOST_SYMBOL_VISIBLE generic_error_category: public error_category
35{
36public:
37
38 BOOST_SYSTEM_CONSTEXPR generic_error_category() noexcept:
39 error_category( detail::generic_category_id )
40 {
41 }
42
43 const char * name() const noexcept BOOST_OVERRIDE
44 {
45 return "generic";
46 }
47
48 std::string message( int ev ) const BOOST_OVERRIDE;
49 char const * message( int ev, char * buffer, std::size_t len ) const noexcept BOOST_OVERRIDE;
50};
51
52#if ( defined( BOOST_GCC ) && BOOST_GCC >= 40600 ) || defined( BOOST_CLANG )
53#pragma GCC diagnostic pop
54#endif
55
56// generic_error_category::message
57
58inline char const * generic_error_category::message( int ev, char * buffer, std::size_t len ) const noexcept
59{
60 return generic_error_category_message( ev, buffer, len );
61}
62
63inline std::string generic_error_category::message( int ev ) const
64{
65 return generic_error_category_message( ev );
66}
67
68} // namespace detail
69
70// generic_category()
71
72#if defined(BOOST_SYSTEM_HAS_CONSTEXPR)
73
74namespace detail
75{
76
77template<class T> struct BOOST_SYMBOL_VISIBLE generic_cat_holder
78{
79 static constexpr generic_error_category instance{};
80};
81
82// Before C++17 it was mandatory to redeclare all static constexpr
83#if defined(BOOST_NO_CXX17_INLINE_VARIABLES)
84template<class T> constexpr generic_error_category generic_cat_holder<T>::instance;
85#endif
86
87} // namespace detail
88
89constexpr error_category const & generic_category() noexcept
90{
91 return detail::generic_cat_holder<void>::instance;
92}
93
94#else // #if defined(BOOST_SYSTEM_HAS_CONSTEXPR)
95
96#if !defined(__SUNPRO_CC) // trailing __global is not supported
97inline error_category const & generic_category() noexcept BOOST_SYMBOL_VISIBLE;
98#endif
99
100inline error_category const & generic_category() noexcept
101{
102 static const detail::generic_error_category instance;
103 return instance;
104}
105
106#endif // #if defined(BOOST_SYSTEM_HAS_CONSTEXPR)
107
108// deprecated synonyms
109
110#ifdef BOOST_SYSTEM_ENABLE_DEPRECATED
111
112BOOST_SYSTEM_DEPRECATED("please use generic_category()") inline const error_category & get_generic_category() { return generic_category(); }
113BOOST_SYSTEM_DEPRECATED("please use generic_category()") inline const error_category & get_posix_category() { return generic_category(); }
114BOOST_SYSTEM_DEPRECATED("please use generic_category()") static const error_category & posix_category BOOST_ATTRIBUTE_UNUSED = generic_category();
115BOOST_SYSTEM_DEPRECATED("please use generic_category()") static const error_category & errno_ecat BOOST_ATTRIBUTE_UNUSED = generic_category();
116
117#endif
118
119} // namespace system
120
121} // namespace boost
122
123#endif // #ifndef BOOST_SYSTEM_DETAIL_GENERIC_CATEGORY_HPP_INCLUDED
124

source code of boost/libs/system/include/boost/system/detail/generic_category.hpp