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1 | /* | |
2 | * Copyright Andrey Semashev 2007 - 2015. | |
3 | * Distributed under the Boost Software License, Version 1.0. | |
4 | * (See accompanying file LICENSE_1_0.txt or copy at | |
5 | * http://www.boost.org/LICENSE_1_0.txt) | |
6 | */ | |
7 | /*! | |
8 | * \file message.hpp | |
9 | * \author Andrey Semashev | |
10 | * \date 13.07.2012 | |
11 | * | |
12 | * The header contains log message keyword declaration. | |
13 | */ | |
14 | ||
15 | #ifndef BOOST_LOG_EXPRESSIONS_MESSAGE_HPP_INCLUDED_ | |
16 | #define BOOST_LOG_EXPRESSIONS_MESSAGE_HPP_INCLUDED_ | |
17 | ||
18 | #include <string> | |
19 | #include <boost/mpl/vector.hpp> | |
20 | #include <boost/log/detail/config.hpp> | |
21 | #include <boost/log/detail/default_attribute_names.hpp> | |
22 | #include <boost/log/expressions/keyword.hpp> | |
23 | #include <boost/log/expressions/is_keyword_descriptor.hpp> | |
24 | #include <boost/log/attributes/attribute_name.hpp> | |
25 | #include <boost/log/detail/header.hpp> | |
26 | ||
27 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
28 | #pragma once | |
29 | #endif | |
30 | ||
31 | namespace boost { | |
32 | ||
33 | BOOST_LOG_OPEN_NAMESPACE | |
34 | ||
35 | namespace expressions { | |
36 | ||
37 | namespace tag { | |
38 | ||
39 | /*! | |
40 | * Generic log message attribute descriptor. | |
41 | */ | |
42 | struct message : | |
43 | public keyword_descriptor | |
44 | { | |
45 | // The attribute value type here is not essential since message attributes are not intended to be created via the keyword | |
46 | typedef void attribute_type; | |
47 | ||
48 | #if defined(BOOST_LOG_USE_CHAR) && defined(BOOST_LOG_USE_WCHAR_T) | |
49 | typedef mpl::vector2< std::string, std::wstring > value_type; | |
50 | #elif defined(BOOST_LOG_USE_CHAR) | |
51 | typedef std::string value_type; | |
52 | #elif defined(BOOST_LOG_USE_WCHAR_T) | |
53 | typedef std::wstring value_type; | |
54 | #endif | |
55 | ||
56 | static attribute_name get_name() { return boost::log::aux::default_attribute_names::message(); } | |
57 | }; | |
58 | ||
59 | #if defined(BOOST_LOG_USE_CHAR) | |
60 | /*! | |
61 | * Narrow character log message attribute descriptor. | |
62 | */ | |
63 | struct smessage : | |
64 | public keyword_descriptor | |
65 | { | |
66 | // The attribute value type here is not essential since message attributes are not intended to be created via the keyword | |
67 | typedef void attribute_type; | |
68 | typedef std::string value_type; | |
69 | ||
70 | static attribute_name get_name() { return boost::log::aux::default_attribute_names::message(); } | |
71 | }; | |
72 | #endif | |
73 | ||
74 | #if defined(BOOST_LOG_USE_WCHAR_T) | |
75 | /*! | |
76 | * Wide character log message attribute descriptor. | |
77 | */ | |
78 | struct wmessage : | |
79 | public keyword_descriptor | |
80 | { | |
81 | // The attribute value type here is not essential since message attributes are not intended to be created via the keyword | |
82 | typedef void attribute_type; | |
83 | typedef std::wstring value_type; | |
84 | ||
85 | static attribute_name get_name() { return boost::log::aux::default_attribute_names::message(); } | |
86 | }; | |
87 | #endif | |
88 | ||
89 | } // namespace tag | |
90 | ||
91 | /*! | |
92 | * Generic message keyword type. | |
93 | */ | |
94 | typedef attribute_keyword< tag::message > message_type; | |
95 | /*! | |
96 | * Generic message keyword. | |
97 | */ | |
98 | const message_type message = {}; | |
99 | ||
100 | #if defined(BOOST_LOG_USE_CHAR) | |
101 | /*! | |
102 | * Narrow message keyword type. | |
103 | */ | |
104 | typedef attribute_keyword< tag::smessage > smessage_type; | |
105 | /*! | |
106 | * Narrow message keyword. | |
107 | */ | |
108 | const smessage_type smessage = {}; | |
109 | #endif | |
110 | ||
111 | #if defined(BOOST_LOG_USE_WCHAR_T) | |
112 | /*! | |
113 | * Wide message keyword type. | |
114 | */ | |
115 | typedef attribute_keyword< tag::wmessage > wmessage_type; | |
116 | /*! | |
117 | * Wide message keyword. | |
118 | */ | |
119 | const wmessage_type wmessage = {}; | |
120 | #endif | |
121 | ||
122 | } // namespace expressions | |
123 | ||
124 | BOOST_LOG_CLOSE_NAMESPACE // namespace log | |
125 | ||
126 | } // namespace boost | |
127 | ||
128 | #include <boost/log/detail/footer.hpp> | |
129 | ||
130 | #endif // BOOST_LOG_EXPRESSIONS_MESSAGE_HPP_INCLUDED_ |