/Src/Dependencies/Boost/boost/iostreams/operations_fwd.hpp

 1// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
 2// (C) Copyright 2003-2007 Jonathan Turkanis
 3// Distributed under the Boost Software License, Version 1.0. (See accompanying
 4// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
 5
 6// See http://www.boost.org/libs/iostreams for documentation.
 7
 8#ifndef BOOST_IOSTREAMS_OPERATIONS_FWD_HPP_INCLUDED
 9#define BOOST_IOSTREAMS_OPERATIONS_FWD_HPP_INCLUDED
10
11#if defined(_MSC_VER) && (_MSC_VER >= 1020)
12# pragma once
13#endif
14
15#include <boost/mpl/not.hpp>
16#include <boost/type_traits/is_base_and_derived.hpp>
17
18namespace boost { namespace iostreams {
19
20template<typename T>
21struct operations;
22
23namespace detail {
24
25struct custom_tag { };
26
27template<typename T>
28struct is_custom
29    : mpl::not_<
30          is_base_and_derived< custom_tag, operations<T> >
31      >
32    { };
33
34} // End namespace detail.
35
36template<typename T>
37struct operations : detail::custom_tag { };
38
39} } // End namespaces iostreams, boost.
40
41#endif // #ifndef BOOST_IOSTREAMS_OPERATIONS_FWD_HPP_INCLUDED //--------------//