// Copyright David Abrahams 2002. // 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) #ifndef IF_ELSE_DWA2002322_HPP # define IF_ELSE_DWA2002322_HPP # include <boost/config.hpp> namespace boost { namespace python { namespace detail { template <class T> struct elif_selected; template <class T> struct if_selected { template <bool b> struct elif : elif_selected<T> { }; template <class U> struct else_ { typedef T type; }; }; template <class T> struct elif_selected { # if !(defined(__MWERKS__) && __MWERKS__ <= 0x2407) template <class U> class then; # else template <class U> struct then : if_selected<T> { }; # endif }; # if !(defined(__MWERKS__) && __MWERKS__ <= 0x2407) template <class T> template <class U> class elif_selected<T>::then : public if_selected<T> { }; # endif template <bool b> struct if_ { template <class T> struct then : if_selected<T> { }; }; struct if_unselected { template <bool b> struct elif : if_<b> { }; template <class U> struct else_ { typedef U type; }; }; template <> struct if_<false> { template <class T> struct then : if_unselected { }; }; }}} // namespace boost::python::detail #endif // IF_ELSE_DWA2002322_HPP