Merge branch 'vendor/GCC47'
[dragonfly.git] / contrib / gcc-4.7 / libstdc++-v3 / src / c++11 / system_error.cc
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1// <system_error> implementation file
2
3// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25
26#include <cstring>
27#include <system_error>
28#include <bits/functexcept.h>
29#include <limits>
30
31namespace
32{
33 using std::string;
34
35 struct generic_error_category : public std::error_category
36 {
37 virtual const char*
38 name() const noexcept
39 { return "generic"; }
40
41 virtual string
42 message(int i) const
43 {
44 // XXX locale issues: how does one get or set loc.
45 // _GLIBCXX_HAVE_STRERROR_L, strerror_l(i, cloc)
46 return string(strerror(i));
47 }
48 };
49
50 struct system_error_category : public std::error_category
51 {
52 virtual const char*
53 name() const noexcept
54 { return "system"; }
55
56 virtual string
57 message(int i) const
58 {
59 // XXX locale issues: how does one get or set loc.
60 // _GLIBCXX_HAVE_STRERROR_L, strerror_l(i, cloc)
61 return string(strerror(i));
62 }
63 };
64
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65 const generic_error_category generic_category_instance{};
66 const system_error_category system_category_instance{};
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67}
68
69namespace std _GLIBCXX_VISIBILITY(default)
70{
71_GLIBCXX_BEGIN_NAMESPACE_VERSION
72
73 error_category::error_category() noexcept = default;
74
75 error_category::~error_category() noexcept = default;
76
77 const error_category&
78 system_category() noexcept { return system_category_instance; }
79
80 const error_category&
81 generic_category() noexcept { return generic_category_instance; }
82
83 system_error::~system_error() noexcept = default;
84
85 error_condition
86 error_category::default_error_condition(int __i) const noexcept
87 { return error_condition(__i, *this); }
88
89 bool
90 error_category::equivalent(int __i,
91 const error_condition& __cond) const noexcept
92 { return default_error_condition(__i) == __cond; }
93
94 bool
95 error_category::equivalent(const error_code& __code, int __i) const noexcept
96 { return *this == __code.category() && __code.value() == __i; }
97
98 error_condition
99 error_code::default_error_condition() const noexcept
100 { return category().default_error_condition(value()); }
101
102_GLIBCXX_END_NAMESPACE_VERSION
103} // namespace