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 b6bdf6c..bb09f17 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
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