1 //===---------------------- system_error.cpp ------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 #define _LIBCPP_BUILDING_SYSTEM_ERROR
13 #include "system_error"
15 #include "include/config_elast.h"
19 _LIBCPP_BEGIN_NAMESPACE_STD
21 // class error_category
23 error_category::error_category() _NOEXCEPT
27 error_category::~error_category() _NOEXCEPT
32 error_category::default_error_condition(int ev) const _NOEXCEPT
34 return error_condition(ev, *this);
38 error_category::equivalent(int code, const error_condition& condition) const _NOEXCEPT
40 return default_error_condition(code) == condition;
44 error_category::equivalent(const error_code& code, int condition) const _NOEXCEPT
46 return *this == code.category() && code.value() == condition;
50 __do_message::message(int ev) const
52 return string(strerror(ev));
55 class _LIBCPP_HIDDEN __generic_error_category
59 virtual const char* name() const _NOEXCEPT;
60 virtual string message(int ev) const;
64 __generic_error_category::name() const _NOEXCEPT
70 __generic_error_category::message(int ev) const
73 if (ev > _LIBCPP_ELAST)
74 return string("unspecified generic_category error");
75 #endif // _LIBCPP_ELAST
76 return __do_message::message(ev);
80 generic_category() _NOEXCEPT
82 static __generic_error_category s;
86 class _LIBCPP_HIDDEN __system_error_category
90 virtual const char* name() const _NOEXCEPT;
91 virtual string message(int ev) const;
92 virtual error_condition default_error_condition(int ev) const _NOEXCEPT;
96 __system_error_category::name() const _NOEXCEPT
102 __system_error_category::message(int ev) const
105 if (ev > _LIBCPP_ELAST)
106 return string("unspecified system_category error");
107 #endif // _LIBCPP_ELAST
108 return __do_message::message(ev);
112 __system_error_category::default_error_condition(int ev) const _NOEXCEPT
115 if (ev > _LIBCPP_ELAST)
116 return error_condition(ev, system_category());
117 #endif // _LIBCPP_ELAST
118 return error_condition(ev, generic_category());
121 const error_category&
122 system_category() _NOEXCEPT
124 static __system_error_category s;
131 error_condition::message() const
133 return __cat_->message(__val_);
139 error_code::message() const
141 return __cat_->message(__val_);
147 system_error::__init(const error_code& ec, string what_arg)
151 if (!what_arg.empty())
153 what_arg += ec.message();
158 system_error::system_error(error_code ec, const string& what_arg)
159 : runtime_error(__init(ec, what_arg)),
164 system_error::system_error(error_code ec, const char* what_arg)
165 : runtime_error(__init(ec, what_arg)),
170 system_error::system_error(error_code ec)
171 : runtime_error(__init(ec, "")),
176 system_error::system_error(int ev, const error_category& ecat, const string& what_arg)
177 : runtime_error(__init(error_code(ev, ecat), what_arg)),
178 __ec_(error_code(ev, ecat))
182 system_error::system_error(int ev, const error_category& ecat, const char* what_arg)
183 : runtime_error(__init(error_code(ev, ecat), what_arg)),
184 __ec_(error_code(ev, ecat))
188 system_error::system_error(int ev, const error_category& ecat)
189 : runtime_error(__init(error_code(ev, ecat), "")),
190 __ec_(error_code(ev, ecat))
194 system_error::~system_error() _NOEXCEPT
199 __throw_system_error(int ev, const char* what_arg)
201 #ifndef _LIBCPP_NO_EXCEPTIONS
202 throw system_error(error_code(ev, system_category()), what_arg);
209 _LIBCPP_END_NAMESPACE_STD