diff options
Diffstat (limited to 'contrib/src/boost/mpl/if.hpp')
-rw-r--r-- | contrib/src/boost/mpl/if.hpp | 270 |
1 files changed, 135 insertions, 135 deletions
diff --git a/contrib/src/boost/mpl/if.hpp b/contrib/src/boost/mpl/if.hpp index bb09f17..b6bdf6c 100644 --- a/contrib/src/boost/mpl/if.hpp +++ b/contrib/src/boost/mpl/if.hpp @@ -1,135 +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.
-
-// $Id$
-// $Date$
-// $Revision$
-
-#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
+ +#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. + +// $Id$ +// $Date$ +// $Revision$ + +#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 |