source: NonGTP/Boost/boost/iostreams/detail/enable_if_stream.hpp @ 857

Revision 857, 1.1 KB checked in by igarcia, 19 years ago (diff)
Line 
1// (C) Copyright Jonathan Turkanis 2003.
2// Distributed under the Boost Software License, Version 1.0. (See accompanying
3// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
4
5// See http://www.boost.org/libs/iostreams for documentation.
6
7#ifndef BOOST_IOSTREAMS_DETAIL_ENABLE_IF_STREAM_HPP_INCLUDED
8#define BOOST_IOSTREAMS_DETAIL_ENABLE_IF_STREAM_HPP_INCLUDED
9
10#if defined(_MSC_VER) && (_MSC_VER >= 1020)
11# pragma once
12#endif             
13
14#include <boost/config.hpp>                // BOOST_NO_SFINAE.
15#include <boost/utility/enable_if.hpp>                 
16#include <boost/iostreams/traits_fwd.hpp>  // is_std_io.
17
18#ifndef BOOST_NO_SFINAE
19# define BOOST_IOSTREAMS_ENABLE_IF_STREAM(T) \
20    , typename boost::enable_if< boost::iostreams::is_std_io<T> >::type* = 0  \
21    /**/
22# define BOOST_IOSTREAMS_DISABLE_IF_STREAM(T) \
23    , typename boost::disable_if< boost::iostreams::is_std_io<T> >::type* = 0 \
24    /**/
25#else
26# define BOOST_IOSTREAMS_ENABLE_IF_STREAM(T)
27# define BOOST_IOSTREAMS_DISABLE_IF_STREAM(T)
28#endif
29
30#endif // #ifndef BOOST_IOSTREAMS_DETAIL_ENABLE_IF_STREAM_HPP_INCLUDED
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