ceph/src/boost/libs/iostreams/include/boost/iostreams/detail/call_traits.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_DETAIL_VALUE_TYPE_HPP_INCLUDED
   9 #define BOOST_IOSTREAMS_DETAIL_VALUE_TYPE_HPP_INCLUDED
  10
  11 #if defined(_MSC_VER)
  12 # pragma once
  13 #endif
  14
  15 #include <boost/iostreams/traits.hpp>
  16 #include <boost/mpl/if.hpp>
  17
  18 namespace boost { namespace iostreams { namespace detail {
  19
  20 template<typename T>
  21 struct param_type {
  22     typedef typename mpl::if_<is_std_io<T>, T&, const T&>::type type;
  23 };
  24
  25 template<typename T>
  26 struct value_type {
  27     typedef typename mpl::if_<is_std_io<T>, T&, T>::type type;
  28 };
  29
  30 } } } // End namespaces detail, iostreams, boost.
  31
  32 #endif // #ifndef BOOST_IOSTREAMS_DETAIL_VALUE_TYPE_HPP_INCLUDED //-----------//