sl@0: // (C) Copyright Jonathan Turkanis 2003.
sl@0: // Distributed under the Boost Software License, Version 1.0. (See accompanying
sl@0: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
sl@0: 
sl@0: // See http://www.boost.org/libs/iostreams for documentation.
sl@0: 
sl@0: #ifndef BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED
sl@0: #define BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED
sl@0: 
sl@0: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
sl@0: # pragma once
sl@0: #endif
sl@0: 
sl@0: #include <utility>           // pair.
sl@0: #include <boost/config.hpp>  // DEDUCED_TYPENAME, MSVC.
sl@0: #include <boost/detail/workaround.hpp>
sl@0: #include <boost/iostreams/detail/wrap_unwrap.hpp>
sl@0: #include <boost/iostreams/traits.hpp>
sl@0: #include <boost/mpl/if.hpp>
sl@0: 
sl@0: // Must come last.
sl@0: #include <boost/iostreams/detail/config/disable_warnings.hpp>
sl@0: 
sl@0: namespace boost { namespace iostreams {
sl@0: 
sl@0: namespace detail {
sl@0: 
sl@0: template<typename T>
sl@0: struct input_sequence_impl;
sl@0: 
sl@0: } // End namespace detail.
sl@0: 
sl@0: template<typename T>
sl@0: inline std::pair<
sl@0:     BOOST_DEDUCED_TYPENAME char_type_of<T>::type*,
sl@0:     BOOST_DEDUCED_TYPENAME char_type_of<T>::type*
sl@0: >
sl@0: input_sequence(T& t)
sl@0: { return detail::input_sequence_impl<T>::input_sequence(t); }
sl@0: 
sl@0: namespace detail {
sl@0: 
sl@0: //------------------Definition of direct_impl-------------------------------//
sl@0: 
sl@0: template<typename T>
sl@0: struct input_sequence_impl
sl@0:     : mpl::if_<
sl@0:           detail::is_custom<T>,
sl@0:           operations<T>,
sl@0:           input_sequence_impl<direct_tag>
sl@0:       >::type
sl@0:     { };
sl@0: 
sl@0: template<>
sl@0: struct input_sequence_impl<direct_tag> {
sl@0:     template<typename U>
sl@0:     static std::pair<
sl@0:         BOOST_DEDUCED_TYPENAME char_type_of<U>::type*,
sl@0:         BOOST_DEDUCED_TYPENAME char_type_of<U>::type*
sl@0:     >
sl@0:     input_sequence(U& u) { return u.input_sequence(); }
sl@0: };
sl@0: 
sl@0: } // End namespace detail.
sl@0: 
sl@0: } } // End namespaces iostreams, boost.
sl@0: 
sl@0: #include <boost/iostreams/detail/config/enable_warnings.hpp>
sl@0: 
sl@0: #endif // #ifndef BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED