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) && (_MSC_VER >= 1020) 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 //-----------// 33