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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
//
// placeholders.hpp
// ~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_PLACEHOLDERS_HPP
#define ASIO_PLACEHOLDERS_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_BOOST_BIND)
# include <boost/bind/arg.hpp>
#endif // defined(ASIO_HAS_BOOST_BIND)
#include "asio/detail/push_options.hpp"
namespace asio {
namespace placeholders {
#if defined(GENERATING_DOCUMENTATION)
/// An argument placeholder, for use with boost::bind(), that corresponds to
/// the error argument of a handler for any of the asynchronous functions.
unspecified error;
/// An argument placeholder, for use with boost::bind(), that corresponds to
/// the bytes_transferred argument of a handler for asynchronous functions such
/// as asio::basic_stream_socket::async_write_some or
/// asio::async_write.
unspecified bytes_transferred;
/// An argument placeholder, for use with boost::bind(), that corresponds to
/// the iterator argument of a handler for asynchronous functions such as
/// asio::async_connect.
unspecified iterator;
/// An argument placeholder, for use with boost::bind(), that corresponds to
/// the results argument of a handler for asynchronous functions such as
/// asio::basic_resolver::async_resolve.
unspecified results;
/// An argument placeholder, for use with boost::bind(), that corresponds to
/// the results argument of a handler for asynchronous functions such as
/// asio::async_connect.
unspecified endpoint;
/// An argument placeholder, for use with boost::bind(), that corresponds to
/// the signal_number argument of a handler for asynchronous functions such as
/// asio::signal_set::async_wait.
unspecified signal_number;
#elif defined(ASIO_HAS_BOOST_BIND)
# if defined(__BORLANDC__) || defined(__GNUC__)
inline boost::arg<1> error()
{
return boost::arg<1>();
}
inline boost::arg<2> bytes_transferred()
{
return boost::arg<2>();
}
inline boost::arg<2> iterator()
{
return boost::arg<2>();
}
inline boost::arg<2> results()
{
return boost::arg<2>();
}
inline boost::arg<2> endpoint()
{
return boost::arg<2>();
}
inline boost::arg<2> signal_number()
{
return boost::arg<2>();
}
# else
namespace detail
{
template <int Number>
struct placeholder
{
static boost::arg<Number>& get()
{
static boost::arg<Number> result;
return result;
}
};
}
# if defined(ASIO_MSVC) && (ASIO_MSVC < 1400)
static boost::arg<1>& error
= asio::placeholders::detail::placeholder<1>::get();
static boost::arg<2>& bytes_transferred
= asio::placeholders::detail::placeholder<2>::get();
static boost::arg<2>& iterator
= asio::placeholders::detail::placeholder<2>::get();
static boost::arg<2>& results
= asio::placeholders::detail::placeholder<2>::get();
static boost::arg<2>& endpoint
= asio::placeholders::detail::placeholder<2>::get();
static boost::arg<2>& signal_number
= asio::placeholders::detail::placeholder<2>::get();
# else
namespace
{
boost::arg<1>& error
= asio::placeholders::detail::placeholder<1>::get();
boost::arg<2>& bytes_transferred
= asio::placeholders::detail::placeholder<2>::get();
boost::arg<2>& iterator
= asio::placeholders::detail::placeholder<2>::get();
boost::arg<2>& results
= asio::placeholders::detail::placeholder<2>::get();
boost::arg<2>& endpoint
= asio::placeholders::detail::placeholder<2>::get();
boost::arg<2>& signal_number
= asio::placeholders::detail::placeholder<2>::get();
} // namespace
# endif
# endif
#endif
} // namespace placeholders
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_PLACEHOLDERS_HPP
|
