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1 // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
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2 // (C) Copyright 2003-2007 Jonathan Turkanis
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3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
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4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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5
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6 // See http://www.boost.org/libs/iostreams for documentation.
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7
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8 #ifndef BOOST_IOSTREAMS_DETAIL_DISPATCH_HPP_INCLUDED
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9 #define BOOST_IOSTREAMS_DETAIL_DISPATCH_HPP_INCLUDED
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10
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11 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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12 # pragma once
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13 #endif
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14
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15 #include <boost/config.hpp> // BOOST_DEDUCED_TYPENAME.
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16 #include <boost/iostreams/detail/select.hpp>
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17 #include <boost/iostreams/traits.hpp> // category_of.
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18 #include <boost/mpl/void.hpp>
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19 #include <boost/type_traits/is_convertible.hpp>
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20
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21 namespace boost { namespace iostreams {namespace detail {
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22
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23 template< typename T, typename Tag1, typename Tag2,
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24 typename Tag3 = mpl::void_, typename Tag4 = mpl::void_,
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25 typename Tag5 = mpl::void_, typename Tag6 = mpl::void_,
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26 typename Category =
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27 BOOST_DEDUCED_TYPENAME category_of<T>::type >
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28 struct dispatch
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29 : iostreams::select< // Disambiguation for Tru64.
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30 is_convertible<Category, Tag1>, Tag1,
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31 is_convertible<Category, Tag2>, Tag2,
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32 is_convertible<Category, Tag3>, Tag3,
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33 is_convertible<Category, Tag4>, Tag4,
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34 is_convertible<Category, Tag5>, Tag5,
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35 is_convertible<Category, Tag6>, Tag6
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36 >
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37 { };
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38
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39 } } } // End namespaces detail, iostreams, boost.
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40
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41 #endif // #ifndef BOOST_IOSTREAMS_DETAIL_DISPATCH_HPP_INCLUDED
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