aboutsummaryrefslogtreecommitdiffstats
path: root/lib/Support/system_error.cpp
blob: 56898de31520b71882e9d58fe5fafa44443e6734 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
//===---------------------- system_error.cpp ------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This was lifted from libc++ and modified for C++03.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/system_error.h"
#include "llvm/Support/Errno.h"
#include <string>
#include <cstring>

namespace llvm {

// class error_category

error_category::error_category() {
}

error_category::~error_category() {
}

error_condition
error_category::default_error_condition(int ev) const {
  return error_condition(ev, *this);
}

bool
error_category::equivalent(int code, const error_condition& condition) const {
  return default_error_condition(code) == condition;
}

bool
error_category::equivalent(const error_code& code, int condition) const {
  return *this == code.category() && code.value() == condition;
}

std::string
_do_message::message(int ev) const {
  return std::string(sys::StrError(ev));
}

class _generic_error_category : public _do_message {
public:
  virtual const char* name() const;
  virtual std::string message(int ev) const;
};

const char*
_generic_error_category::name() const {
  return "generic";
}

std::string
_generic_error_category::message(int ev) const {
#ifdef ELAST
  if (ev > ELAST)
    return std::string("unspecified generic_category error");
#endif  // ELAST
  return _do_message::message(ev);
}

const error_category&
generic_category() {
  static _generic_error_category s;
  return s;
}

class _system_error_category : public _do_message {
public:
  virtual const char* name() const;
  virtual std::string message(int ev) const;
  virtual error_condition default_error_condition(int ev) const;
};

const char*
_system_error_category::name() const {
  return "system";
}

// std::string _system_error_category::message(int ev) const {
// Is in Platform/system_error.inc

// error_condition _system_error_category::default_error_condition(int ev) const
// Is in Platform/system_error.inc

const error_category&
system_category() {
  static _system_error_category s;
  return s;
}

const error_category&
posix_category() {
#ifdef LLVM_ON_WIN32
  return generic_category();
#else
  return system_category();
#endif
}

// error_condition

std::string
error_condition::message() const {
  return _cat_->message(_val_);
}

// error_code

std::string
error_code::message() const {
  return _cat_->message(_val_);
}

} // end namespace llvm

// Include the truly platform-specific parts of this class.
#if defined(LLVM_ON_UNIX)
#include "Unix/system_error.inc"
#endif
#if defined(LLVM_ON_WIN32)
#include "Windows/system_error.inc"
#endif