boost/iostreams/detail/default_arg.hpp

   1 // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
   2 // (C) Copyright 2005-2007 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_DEFAULT_ARG_HPP_INCLUDED
   9 #define BOOST_IOSTREAMS_DETAIL_DEFAULT_ARG_HPP_INCLUDED
  10
  11 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
  12 # pragma once
  13 #endif
  14
  15 #include <boost/config.hpp>
  16 #include <boost/detail/workaround.hpp>
  17
  18 #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
  19 # include <boost/mpl/identity.hpp>
  20 # define BOOST_IOSTREAMS_DEFAULT_ARG(arg) mpl::identity< arg >::type
  21 #else
  22 # define BOOST_IOSTREAMS_DEFAULT_ARG(arg) arg
  23 #endif
  24
  25 #endif // #ifndef BOOST_IOSTREAMS_DETAIL_DEFAULT_ARG_HPP_INCLUDED