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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 deduce_char_type.hpp | |
9 | * \author Andrey Semashev | |
10 | * \date 17.11.2012 | |
11 | * | |
12 | * \brief This header is the Boost.Log library implementation, see the library documentation | |
13 | * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. | |
14 | */ | |
15 | ||
16 | #ifndef BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_HPP_INCLUDED_ | |
17 | #define BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_HPP_INCLUDED_ | |
18 | ||
19 | #include <boost/log/detail/config.hpp> | |
20 | #include <boost/log/detail/header.hpp> | |
21 | ||
22 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
23 | #pragma once | |
24 | #endif | |
25 | ||
26 | namespace boost { | |
27 | ||
28 | BOOST_LOG_OPEN_NAMESPACE | |
29 | ||
30 | namespace aux { | |
31 | ||
32 | template< typename T > | |
33 | struct deduced_char_type; | |
34 | ||
35 | template< > | |
36 | struct deduced_char_type< char > | |
37 | { | |
38 | typedef char type; | |
39 | }; | |
40 | ||
41 | template< > | |
42 | struct deduced_char_type< const char > | |
43 | { | |
44 | typedef char type; | |
45 | }; | |
46 | ||
47 | template< > | |
48 | struct deduced_char_type< wchar_t > | |
49 | { | |
50 | typedef wchar_t type; | |
51 | }; | |
52 | ||
53 | template< > | |
54 | struct deduced_char_type< const wchar_t > | |
55 | { | |
56 | typedef wchar_t type; | |
57 | }; | |
58 | ||
59 | //! Auxiliary traits to detect character type from a string | |
60 | template< typename RangeT > | |
61 | struct deduce_char_type : | |
62 | public deduced_char_type< typename RangeT::value_type > | |
63 | { | |
64 | }; | |
65 | ||
66 | template< typename T > | |
67 | struct deduce_char_type< T* > : | |
68 | public deduced_char_type< T > | |
69 | { | |
70 | }; | |
71 | ||
72 | template< typename T > | |
73 | struct deduce_char_type< T* const > : | |
74 | public deduced_char_type< T > | |
75 | { | |
76 | }; | |
77 | ||
78 | template< typename T, unsigned int CountV > | |
79 | struct deduce_char_type< T[CountV] > : | |
80 | public deduced_char_type< T > | |
81 | { | |
82 | }; | |
83 | ||
84 | template< typename T > | |
85 | struct deduce_char_type< T& > : | |
86 | public deduce_char_type< T > | |
87 | { | |
88 | }; | |
89 | ||
90 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
91 | ||
92 | template< typename T > | |
93 | struct deduce_char_type< T&& > : | |
94 | public deduce_char_type< T > | |
95 | { | |
96 | }; | |
97 | ||
98 | #endif | |
99 | ||
100 | } // namespace aux | |
101 | ||
102 | BOOST_LOG_CLOSE_NAMESPACE // namespace log | |
103 | ||
104 | } // namespace boost | |
105 | ||
106 | #include <boost/log/detail/footer.hpp> | |
107 | ||
108 | #endif // BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_HPP_INCLUDED_ |