Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/mpl/void.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
parents | |
children | c530137014c0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/mpl/void.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,76 @@ + +#ifndef BOOST_MPL_VOID_HPP_INCLUDED +#define BOOST_MPL_VOID_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: void.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ +// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $ +// $Revision: 49267 $ + +#include <boost/mpl/void_fwd.hpp> +#include <boost/mpl/bool.hpp> +#include <boost/mpl/aux_/na_spec.hpp> +#include <boost/mpl/aux_/config/msvc.hpp> +#include <boost/mpl/aux_/config/workaround.hpp> + +BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN + +// [JDG Feb-4-2003] made void_ a complete type to allow it to be +// instantiated so that it can be passed in as an object that can be +// used to select an overloaded function. Possible use includes signaling +// a zero arity functor evaluation call. +struct void_ { typedef void_ type; }; + +BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE + +namespace boost { namespace mpl { + +template< typename T > +struct is_void_ + : false_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using false_::value; +#endif +}; + +template<> +struct is_void_<void_> + : true_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using true_::value; +#endif +}; + +template< typename T > +struct is_not_void_ + : true_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using true_::value; +#endif +}; + +template<> +struct is_not_void_<void_> + : false_ +{ +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + using false_::value; +#endif +}; + +BOOST_MPL_AUX_NA_SPEC(1, is_void_) +BOOST_MPL_AUX_NA_SPEC(1, is_not_void_) + +}} + +#endif // BOOST_MPL_VOID_HPP_INCLUDED