[857] | 1 | // (C) Copyright Jonathan Turkanis 2003.
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| 2 | // Distributed under the Boost Software License, Version 1.0. (See accompanying
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| 3 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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| 4 |
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| 5 | // See http://www.boost.org/libs/iostreams for documentation.
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| 6 |
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| 7 | #ifndef BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED
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| 8 | #define BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED
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| 9 |
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| 10 | #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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| 11 | # pragma once
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| 12 | #endif
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| 13 |
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| 14 | #include <utility> // pair.
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| 15 | #include <boost/config.hpp> // DEDUCED_TYPENAME, MSVC.
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| 16 | #include <boost/detail/workaround.hpp>
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| 17 | #include <boost/iostreams/detail/wrap_unwrap.hpp>
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| 18 | #include <boost/iostreams/traits.hpp>
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| 19 | #include <boost/mpl/if.hpp>
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| 20 |
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| 21 | // Must come last.
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| 22 | #include <boost/iostreams/detail/config/disable_warnings.hpp>
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| 23 |
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| 24 | namespace boost { namespace iostreams {
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| 25 |
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| 26 | namespace detail {
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| 27 |
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| 28 | template<typename T>
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| 29 | struct input_sequence_impl;
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| 30 |
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| 31 | } // End namespace detail.
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| 32 |
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| 33 | template<typename T>
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| 34 | inline std::pair<
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| 35 | BOOST_DEDUCED_TYPENAME char_type_of<T>::type*,
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| 36 | BOOST_DEDUCED_TYPENAME char_type_of<T>::type*
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| 37 | >
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| 38 | input_sequence(T& t)
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| 39 | { return detail::input_sequence_impl<T>::input_sequence(t); }
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| 40 |
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| 41 | namespace detail {
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| 42 |
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| 43 | //------------------Definition of direct_impl-------------------------------//
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| 44 |
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| 45 | template<typename T>
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| 46 | struct input_sequence_impl
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| 47 | : mpl::if_<
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| 48 | detail::is_custom<T>,
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| 49 | operations<T>,
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| 50 | input_sequence_impl<direct_tag>
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| 51 | >::type
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| 52 | { };
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| 53 |
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| 54 | template<>
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| 55 | struct input_sequence_impl<direct_tag> {
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| 56 | template<typename U>
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| 57 | static std::pair<
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| 58 | BOOST_DEDUCED_TYPENAME char_type_of<U>::type*,
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| 59 | BOOST_DEDUCED_TYPENAME char_type_of<U>::type*
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| 60 | >
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| 61 | input_sequence(U& u) { return u.input_sequence(); }
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| 62 | };
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| 63 |
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| 64 | } // End namespace detail.
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| 65 |
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| 66 | } } // End namespaces iostreams, boost.
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| 67 |
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| 68 | #include <boost/iostreams/detail/config/enable_warnings.hpp>
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| 69 |
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| 70 | #endif // #ifndef BOOST_IOSTREAMS_INPUT_SEQUENCE_HPP_INCLUDED
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