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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
| commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
| tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/mpl/if.hpp | |
| download | swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 | |
Import.
Diffstat (limited to '3rdParty/Boost/boost/mpl/if.hpp')
| -rw-r--r-- | 3rdParty/Boost/boost/mpl/if.hpp | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/mpl/if.hpp b/3rdParty/Boost/boost/mpl/if.hpp new file mode 100644 index 0000000..aa14d88 --- /dev/null +++ b/3rdParty/Boost/boost/mpl/if.hpp @@ -0,0 +1,135 @@ + +#ifndef BOOST_MPL_IF_HPP_INCLUDED +#define BOOST_MPL_IF_HPP_INCLUDED + +// Copyright Aleksey Gurtovoy 2000-2004 +// +// 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: if.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ +// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ +// $Revision: 49267 $ + +#include <boost/mpl/aux_/value_wknd.hpp> +#include <boost/mpl/aux_/static_cast.hpp> +#include <boost/mpl/aux_/na_spec.hpp> +#include <boost/mpl/aux_/lambda_support.hpp> +#include <boost/mpl/aux_/config/integral.hpp> +#include <boost/mpl/aux_/config/ctps.hpp> +#include <boost/mpl/aux_/config/workaround.hpp> + +namespace boost { namespace mpl { + +#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) + +template< + bool C + , typename T1 + , typename T2 + > +struct if_c +{ + typedef T1 type; +}; + +template< + typename T1 + , typename T2 + > +struct if_c<false,T1,T2> +{ + typedef T2 type; +}; + +// agurt, 05/sep/04: nondescriptive parameter names for the sake of DigitalMars +// (and possibly MWCW < 8.0); see http://article.gmane.org/gmane.comp.lib.boost.devel/108959 +template< + typename BOOST_MPL_AUX_NA_PARAM(T1) + , typename BOOST_MPL_AUX_NA_PARAM(T2) + , typename BOOST_MPL_AUX_NA_PARAM(T3) + > +struct if_ +{ + private: + // agurt, 02/jan/03: two-step 'type' definition for the sake of aCC + typedef if_c< +#if defined(BOOST_MPL_CFG_BCC_INTEGRAL_CONSTANTS) + BOOST_MPL_AUX_VALUE_WKND(T1)::value +#else + BOOST_MPL_AUX_STATIC_CAST(bool, BOOST_MPL_AUX_VALUE_WKND(T1)::value) +#endif + , T2 + , T3 + > almost_type_; + + public: + typedef typename almost_type_::type type; + + BOOST_MPL_AUX_LAMBDA_SUPPORT(3,if_,(T1,T2,T3)) +}; + +#else + +// no partial class template specialization + +namespace aux { + +template< bool C > +struct if_impl +{ + template< typename T1, typename T2 > struct result_ + { + typedef T1 type; + }; +}; + +template<> +struct if_impl<false> +{ + template< typename T1, typename T2 > struct result_ + { + typedef T2 type; + }; +}; + +} // namespace aux + +template< + bool C_ + , typename T1 + , typename T2 + > +struct if_c +{ + typedef typename aux::if_impl< C_ > + ::template result_<T1,T2>::type type; +}; + +// (almost) copy & paste in order to save one more +// recursively nested template instantiation to user +template< + typename BOOST_MPL_AUX_NA_PARAM(C_) + , typename BOOST_MPL_AUX_NA_PARAM(T1) + , typename BOOST_MPL_AUX_NA_PARAM(T2) + > +struct if_ +{ + enum { msvc_wknd_ = BOOST_MPL_AUX_MSVC_VALUE_WKND(C_)::value }; + + typedef typename aux::if_impl< BOOST_MPL_AUX_STATIC_CAST(bool, msvc_wknd_) > + ::template result_<T1,T2>::type type; + + BOOST_MPL_AUX_LAMBDA_SUPPORT(3,if_,(C_,T1,T2)) +}; + +#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION + +BOOST_MPL_AUX_NA_SPEC(3, if_) + +}} + +#endif // BOOST_MPL_IF_HPP_INCLUDED |