ceph/src/boost/boost/log/detail/embedded_string_type.hpp

   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   embedded_string_type.hpp
   9  * \author Andrey Semashev
  10  * \date   16.08.2009
  11  *
  12  * 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_EMBEDDED_STRING_TYPE_HPP_INCLUDED_
  17 #define BOOST_LOG_DETAIL_EMBEDDED_STRING_TYPE_HPP_INCLUDED_
  18
  19 #include <string>
  20 #include <boost/type_traits/remove_cv.hpp>
  21 #include <boost/log/detail/config.hpp>
  22 #include <boost/log/detail/header.hpp>
  23
  24 #ifdef BOOST_HAS_PRAGMA_ONCE
  25 #pragma once
  26 #endif
  27
  28 namespace boost {
  29
  30 BOOST_LOG_OPEN_NAMESPACE
  31
  32 namespace aux {
  33
  34 template< typename T, typename ArgT >
  35 struct make_embedded_string_type_impl
  36 {
  37     typedef ArgT type;
  38 };
  39
  40 template< typename ArgT >
  41 struct make_embedded_string_type_impl< char, ArgT >
  42 {
  43     typedef std::basic_string< char > type;
  44 };
  45
  46 template< typename ArgT >
  47 struct make_embedded_string_type_impl< const char, ArgT >
  48 {
  49     typedef std::basic_string< char > type;
  50 };
  51
  52 template< typename ArgT >
  53 struct make_embedded_string_type_impl< wchar_t, ArgT >
  54 {
  55     typedef std::basic_string< wchar_t > type;
  56 };
  57
  58 template< typename ArgT >
  59 struct make_embedded_string_type_impl< const wchar_t, ArgT >
  60 {
  61     typedef std::basic_string< wchar_t > type;
  62 };
  63
  64 #if !defined(BOOST_NO_CXX11_CHAR16_T)
  65 template< typename ArgT >
  66 struct make_embedded_string_type_impl< char16_t, ArgT >
  67 {
  68     typedef std::basic_string< char16_t > type;
  69 };
  70
  71 template< typename ArgT >
  72 struct make_embedded_string_type_impl< const char16_t, ArgT >
  73 {
  74     typedef std::basic_string< char16_t > type;
  75 };
  76 #endif
  77
  78 #if !defined(BOOST_NO_CXX11_CHAR32_T)
  79 template< typename ArgT >
  80 struct make_embedded_string_type_impl< char32_t, ArgT >
  81 {
  82     typedef std::basic_string< char32_t > type;
  83 };
  84
  85 template< typename ArgT >
  86 struct make_embedded_string_type_impl< const char32_t, ArgT >
  87 {
  88     typedef std::basic_string< char32_t > type;
  89 };
  90 #endif
  91
  92 //! An auxiliary type translator to store strings by value in function objects and attribute values
  93 template< typename ArgT >
  94 struct make_embedded_string_type :
  95     public remove_cv< ArgT >
  96 {
  97 };
  98
  99 template< typename ArgT >
 100 struct make_embedded_string_type< ArgT* > :
 101     public make_embedded_string_type_impl< ArgT, ArgT* >
 102 {
 103 };
 104
 105 template< typename ArgT, unsigned int CountV >
 106 struct make_embedded_string_type< ArgT[CountV] > :
 107     public make_embedded_string_type_impl< ArgT, ArgT[CountV] >
 108 {
 109 };
 110
 111 template< typename ArgT, unsigned int CountV >
 112 struct make_embedded_string_type< ArgT(&)[CountV] > :
 113     public make_embedded_string_type_impl< ArgT, ArgT(&)[CountV] >
 114 {
 115 };
 116
 117 } // namespace aux
 118
 119 BOOST_LOG_CLOSE_NAMESPACE // namespace log
 120
 121 } // namespace boost
 122
 123 #include <boost/log/detail/footer.hpp>
 124
 125 #endif // BOOST_LOG_DETAIL_EMBEDDED_STRING_TYPE_HPP_INCLUDED_