| 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_OPERATIONS_FWD_HPP_INCLUDED |
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| 9 | #define BOOST_IOSTREAMS_OPERATIONS_FWD_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/mpl/not.hpp> |
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| 16 | #include <boost/type_traits/is_base_and_derived.hpp> |
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| 17 | |
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| 18 | namespace boost { namespace iostreams { |
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| 19 | |
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| 20 | template<typename T> |
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| 21 | struct operations; |
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| 22 | |
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| 23 | namespace detail { |
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| 24 | |
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| 25 | struct custom_tag { }; |
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| 26 | |
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| 27 | template<typename T> |
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| 28 | struct is_custom |
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| 29 | : mpl::not_< |
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| 30 | is_base_and_derived< custom_tag, operations<T> > |
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| 31 | > |
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| 32 | { }; |
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| 33 | |
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| 34 | } // End namespace detail. |
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| 35 | |
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| 36 | template<typename T> |
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| 37 | struct operations : detail::custom_tag { }; |
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| 38 | |
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| 39 | } } // End namespaces iostreams, boost. |
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| 40 | |
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| 41 | #endif // #ifndef BOOST_IOSTREAMS_OPERATIONS_FWD_HPP_INCLUDED //--------------// |
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| 42 | |
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