ceph/src/boost/libs/iostreams/include/boost/iostreams/detail/broken_overload_resolution/stream_buffer.hpp

   1 // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
   2 // (C) Copyright 2003-2007 Jonathan Turkanis
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
   5
   6 // See http://www.boost.org/libs/iostreams for documentation.
   7
   8 #ifndef BOOST_IOSTREAMS_DETAIL_BROKEN_OVERLOAD_RESOLUTION_STREAM_BUFFER_HPP_INCLUDED
   9 #define BOOST_IOSTREAMS_DETAIL_BROKEN_OVERLOAD_RESOLUTION_STREAM_BUFFER_HPP_INCLUDED
  10
  11 #include <boost/iostreams/detail/broken_overload_resolution/forward.hpp>
  12 #include <boost/throw_exception.hpp>
  13
  14 namespace boost { namespace iostreams {
  15
  16 template< typename T,
  17           typename Tr =
  18               BOOST_IOSTREAMS_CHAR_TRAITS(
  19                   BOOST_DEDUCED_TYPENAME char_type_of<T>::type
  20               ),
  21           typename Alloc =
  22               std::allocator<
  23                   BOOST_DEDUCED_TYPENAME char_type_of<T>::type
  24               >,
  25           typename Mode = BOOST_DEDUCED_TYPENAME mode_of<T>::type >
  26 class stream_buffer
  27     : public detail::stream_buffer_traits<T, Tr, Alloc, Mode>::type
  28 {
  29 private:
  30     BOOST_STATIC_ASSERT((
  31         is_convertible<
  32             BOOST_DEDUCED_TYPENAME iostreams::category_of<T>::type, Mode
  33         >::value
  34     ));
  35     typedef typename
  36             detail::stream_buffer_traits<
  37                 T, Tr, Alloc, Mode
  38             >::type                           base_type;
  39 public:
  40     typedef typename char_type_of<T>::type    char_type;
  41     struct category
  42         : Mode,
  43           closable_tag,
  44           streambuf_tag
  45         { };
  46     BOOST_IOSTREAMS_STREAMBUF_TYPEDEFS(Tr)
  47     stream_buffer() { }
  48     ~stream_buffer()
  49     {
  50         try {
  51             if (this->is_open() && this->auto_close())
  52                 this->close();
  53         } catch (...) { }
  54     }
  55     template<typename U0>
  56     stream_buffer(const U0& u0)
  57     {
  58         open_impl(detail::forward<T, U0>(), u0);
  59     }
  60     template<typename U0, typename U1>
  61     stream_buffer(const U0& u0, const U1& u1)
  62     {
  63         open_impl(detail::forward<T, U0>(), u0, u1);
  64     }
  65     template<typename U0, typename U1, typename U2>
  66     stream_buffer(const U0& u0, const U1& u1, const U2& u2)
  67     {
  68         open_impl(detail::forward<T, U0>(), u0, u1, u2);
  69     }
  70 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------------//
  71     template<typename U0>
  72     stream_buffer(U0& u0)
  73     {
  74         open_impl(detail::forward<T, U0>(), u0);
  75     }
  76     template<typename U0, typename U1>
  77     stream_buffer(U0& u0, const U1& u1)
  78     {
  79         open_impl(detail::forward<T, U0>(), u0, u1);
  80     }
  81     template<typename U0, typename U1, typename U2>
  82     stream_buffer(U0& u0, const U1& u1, const U2& u2)
  83     {
  84         open_impl(detail::forward<T, U0>(), u0, u1, u2);
  85     }
  86 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------//
  87     template<typename U0>
  88     void open(const U0& u0)
  89     {
  90         open_impl(detail::forward<T, U0>(), u0);
  91     }
  92     template<typename U0, typename U1>
  93     void open(const U0& u0, const U1& u1)
  94     {
  95         open_impl(detail::forward<T, U0>(), u0, u1);
  96     }
  97     template<typename U0, typename U1, typename U2>
  98     void open(const U0& u0, const U1& u1, const U2& u2)
  99     {
 100         open_impl(detail::forward<T, U0>(), u0, u1, u2);
 101     }
 102 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------------//
 103     template<typename U0>
 104     void open(U0& u0)
 105     {
 106         open_impl(detail::forward<T, U0>(), u0);
 107     }
 108     template<typename U0, typename U1>
 109     void open(U0& u0, const U1& u1)
 110     {
 111         open_impl(detail::forward<T, U0>(), u0, u1);
 112     }
 113     template<typename U0, typename U1, typename U2>
 114     void open(U0& u0, const U1& u1, const U2& u2)
 115     {
 116         open_impl(detail::forward<T, U0>(), u0, u1, u2);
 117     }
 118 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------//
 119     T& operator*() { return *this->component(); }
 120     T* operator->() { return this->component(); }
 121 private:
 122     template<typename U0>
 123     void open_impl(mpl::false_, const U0& u0)
 124     {
 125         base_type::open(const_cast<U0&>(u0), -1, -1);
 126     }
 127 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------------//
 128     template<typename U0>
 129     void open_impl(mpl::false_, U0& u0)
 130     {
 131         base_type::open(detail::wrap(u0), -1, -1);
 132     }
 133 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------//
 134     template<typename U0>
 135     void open_impl(mpl::true_, const U0& u0)
 136     {
 137         base_type::open(T(const_cast<U0&>(u0)), -1, -1);
 138     }
 139 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------------//
 140     template<typename U0>
 141     void open_impl(mpl::true_, U0& u0)
 142     {
 143         base_type::open(T(u0), -1, -1);
 144     }
 145 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------//
 146     template<typename U0, typename U1>
 147     void open_impl(mpl::false_, const U0& u0, const U1& u1)
 148     {
 149         base_type::open(u0, u1, -1);
 150     }
 151     template<typename U0, typename U1>
 152     void open_impl(mpl::true_, const U0& u0, const U1& u1)
 153     {
 154         base_type::open(T(const_cast<U0&>(u0), u1), -1, -1);
 155     }
 156 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------------//
 157     template<typename U0, typename U1>
 158     void open_impl(mpl::true_, U0& u0, const U1& u1)
 159     {
 160         base_type::open(T(u0, u1), -1, -1);
 161     }
 162 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------//
 163     template<typename U0, typename U1, typename U2>
 164     void open_impl(mpl::false_, const U0& u0, const U1& u1, const U2& u2)
 165     {
 166         base_type::open(u0, u1, u2);
 167     }
 168     template<typename U0, typename U1, typename U2>
 169     void open_impl(mpl::true_, const U0& u0, const U1& u1, const U2& u2)
 170     {
 171         base_type::open(T(const_cast<U0&>(u0), u1, u2), -1, -1);
 172     }
 173 #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------------//
 174     template<typename U0, typename U1, typename U2>
 175     void open_impl(mpl::true_, U0& u0, const U1& u1, const U2& u2)
 176     {
 177         base_type::open(T(u0, u1, u2), -1, -1);
 178     }
 179 #endif // !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) //---------------------------//
 180     void check_open()
 181     {
 182         if (this->is_open())
 183             boost::throw_exception(BOOST_IOSTREAMS_FAILURE("already open"));
 184     }
 185 };
 186
 187 } } // End namespaces iostreams, boost.
 188
 189 #endif // BOOST_IOSTREAMS_DETAIL_BROKEN_OVERLOAD_RESOLUTION_STREAM_BUFFER_HPP_INCLUDED