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// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
// (C) Copyright 2003-2007 Jonathan Turkanis
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
// See http://www.boost.org/libs/iostreams for documentation.
#ifndef BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED
#define BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include <utility> // pair.
#include <boost/config.hpp> // DEDUCED_TYPENAME, MSVC.
#include <boost/detail/workaround.hpp>
#include <boost/iostreams/detail/wrap_unwrap.hpp>
#include <boost/iostreams/operations_fwd.hpp> // is_custom
#include <boost/iostreams/traits.hpp>
#include <boost/mpl/if.hpp>
// Must come last.
#include <boost/iostreams/detail/config/disable_warnings.hpp>
namespace boost { namespace iostreams {
namespace detail {
template<typename T>
struct input_sequence_impl;
} // End namespace detail.
template<typename T>
inline std::pair<
BOOST_DEDUCED_TYPENAME char_type_of<T>::type*,
BOOST_DEDUCED_TYPENAME char_type_of<T>::type*
>
input_sequence(T& t)
{ return detail::input_sequence_impl<T>::input_sequence(t); }
namespace detail {
//------------------Definition of direct_impl-------------------------------//
template<typename T>
struct input_sequence_impl
: mpl::if_<
detail::is_custom<T>,
operations<T>,
input_sequence_impl<direct_tag>
>::type
{ };
template<>
struct input_sequence_impl<direct_tag> {
template<typename U>
static std::pair<
BOOST_DEDUCED_TYPENAME char_type_of<U>::type*,
BOOST_DEDUCED_TYPENAME char_type_of<U>::type*
>
input_sequence(U& u) { return u.input_sequence(); }
};
} // End namespace detail.
} } // End namespaces iostreams, boost.
#include <boost/iostreams/detail/config/enable_warnings.hpp>
#endif // #ifndef BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED