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.)
6 // See http://www.boost.org/libs/iostreams for documentation.
8 #ifndef BOOST_IOSTREAMS_STREAM_BUFFER_HPP_INCLUDED
9 #define BOOST_IOSTREAMS_STREAM_BUFFER_HPP_INCLUDED
15 #include <memory> // allocator.
16 #include <boost/config.hpp> // BOOST_DEDUCED_TYPENAME.
17 #include <boost/iostreams/detail/char_traits.hpp>
18 #include <boost/iostreams/detail/config/overload_resolution.hpp>
19 #include <boost/iostreams/detail/forward.hpp>
20 #include <boost/iostreams/detail/ios.hpp> // failure, streamsize.
21 #include <boost/iostreams/detail/streambuf/direct_streambuf.hpp>
22 #include <boost/iostreams/detail/streambuf/indirect_streambuf.hpp>
23 #include <boost/iostreams/traits.hpp>
24 #include <boost/static_assert.hpp>
25 #include <boost/throw_exception.hpp>
26 #include <boost/type_traits/is_convertible.hpp>
29 #include <boost/iostreams/detail/config/disable_warnings.hpp> // MSVC.
31 namespace boost { namespace iostreams { namespace detail {
33 template<typename T, typename Tr, typename Alloc, typename Mode>
34 struct stream_buffer_traits {
38 BOOST_DEDUCED_TYPENAME category_of<T>::type,
41 direct_streambuf<T, Tr>,
42 indirect_streambuf<T, Tr, Alloc, Mode>
46 } } } // End namespaces detail, iostreams, boost
48 #ifdef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION
49 # include <boost/iostreams/detail/broken_overload_resolution/stream_buffer.hpp>
52 namespace boost { namespace iostreams {
56 BOOST_IOSTREAMS_CHAR_TRAITS(
57 BOOST_DEDUCED_TYPENAME char_type_of<T>::type
61 BOOST_DEDUCED_TYPENAME char_type_of<T>::type
63 typename Mode = BOOST_DEDUCED_TYPENAME mode_of<T>::type >
65 : public detail::stream_buffer_traits<T, Tr, Alloc, Mode>::type
70 BOOST_DEDUCED_TYPENAME iostreams::category_of<T>::type, Mode
74 detail::stream_buffer_traits<
78 typedef typename char_type_of<T>::type char_type;
84 BOOST_IOSTREAMS_STREAMBUF_TYPEDEFS(Tr)
90 if (this->is_open() && this->auto_close())
94 BOOST_IOSTREAMS_FORWARD( stream_buffer, open_impl, T,
95 BOOST_IOSTREAMS_PUSH_PARAMS,
96 BOOST_IOSTREAMS_PUSH_ARGS )
97 T& operator*() { return *this->component(); }
98 T* operator->() { return this->component(); }
100 void open_impl(const T& t BOOST_IOSTREAMS_PUSH_PARAMS())
101 { // Used for forwarding.
103 boost::throw_exception(
104 BOOST_IOSTREAMS_FAILURE("already open")
106 base_type::open(t BOOST_IOSTREAMS_PUSH_ARGS());
110 } } // End namespaces iostreams, boost.
112 #endif // #ifdef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION
114 #include <boost/iostreams/detail/config/enable_warnings.hpp> // MSVC.
116 #endif // #ifndef BOOST_IOSTREAMS_STREAM_BUFFER_HPP_INCLUDED