diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2011-06-28 17:17:23 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2011-06-28 17:17:23 +0200 |
commit | b51965dddbed68f23c5e8c169c23c794313ce5f6 (patch) | |
tree | 37bbdf4e5b1cdd34ea0694a5abd1483d1de2b3af /cutl/details/boost/mpl/aux_/na.hpp | |
parent | 5f06e7e30e4f511ce2fb27c5feefa6aeb6f00841 (diff) |
Add boost subset as an implementation detail
Diffstat (limited to 'cutl/details/boost/mpl/aux_/na.hpp')
-rw-r--r-- | cutl/details/boost/mpl/aux_/na.hpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/cutl/details/boost/mpl/aux_/na.hpp b/cutl/details/boost/mpl/aux_/na.hpp new file mode 100644 index 0000000..f38192b --- /dev/null +++ b/cutl/details/boost/mpl/aux_/na.hpp @@ -0,0 +1,95 @@ + +#ifndef BOOST_MPL_AUX_NA_HPP_INCLUDED +#define BOOST_MPL_AUX_NA_HPP_INCLUDED + +// Copyright Aleksey Gurtovoy 2001-2004 +// +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) +// +// See http://www.boost.org/libs/mpl for documentation. + +// $Id: na.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ +// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ +// $Revision: 49267 $ + +#include <cutl/details/boost/mpl/bool.hpp> +#include <cutl/details/boost/mpl/aux_/na_fwd.hpp> +#include <cutl/details/boost/mpl/aux_/config/msvc.hpp> +#include <cutl/details/boost/mpl/aux_/config/ctps.hpp> + +namespace cutl_details_boost { namespace mpl { + +template< typename T > +struct is_na + : false_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using false_::value; +#endif +}; + +template<> +struct is_na<na> + : true_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using true_::value; +#endif +}; + +template< typename T > +struct is_not_na + : true_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using true_::value; +#endif +}; + +template<> +struct is_not_na<na> + : false_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using false_::value; +#endif +}; + +#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) +template< typename T, typename U > struct if_na +{ + typedef T type; +}; + +template< typename U > struct if_na<na,U> +{ + typedef U type; +}; +#else +template< typename T > struct if_na_impl +{ + template< typename U > struct apply + { + typedef T type; + }; +}; + +template<> struct if_na_impl<na> +{ + template< typename U > struct apply + { + typedef U type; + }; +}; + +template< typename T, typename U > struct if_na + : if_na_impl<T>::template apply<U> +{ +}; +#endif + +}} + +#endif // BOOST_MPL_AUX_NA_HPP_INCLUDED |