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Diffstat (limited to '3rdParty/Boost/src/boost/function_types/detail/class_transform.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/function_types/detail/class_transform.hpp | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/function_types/detail/class_transform.hpp b/3rdParty/Boost/src/boost/function_types/detail/class_transform.hpp new file mode 100644 index 0000000..ef9a225 --- /dev/null +++ b/3rdParty/Boost/src/boost/function_types/detail/class_transform.hpp @@ -0,0 +1,62 @@ + +// (C) Copyright Tobias Schwinger +// +// Use modification and distribution are subject to the boost Software License, +// Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt). + +//------------------------------------------------------------------------------ + +#ifndef BOOST_FT_DETAIL_CLASS_TRANSFORM_HPP_INCLUDED +#define BOOST_FT_DETAIL_CLASS_TRANSFORM_HPP_INCLUDED + +#include <boost/mpl/apply.hpp> +#include <boost/mpl/always.hpp> +#include <boost/mpl/identity.hpp> +#include <boost/mpl/placeholders.hpp> + +#include <boost/type_traits/remove_cv.hpp> +#include <boost/type_traits/add_pointer.hpp> +#include <boost/type_traits/add_reference.hpp> + +namespace boost { namespace function_types { namespace detail { + +using mpl::placeholders::_; + +// Transformation metafunction for the class type of member function pointers. +template<typename T, typename L> +struct class_transform +{ typedef typename mpl::apply1<L,T>::type type; }; + + +#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION +// We can short-circuit the mechanism implemented in the primary template for +// the most common lambda expression and save both the "un-lambdaing" and the +// type traits invocation (we know that T can only be a class type). + +template<typename T> struct class_transform< T, mpl::identity<_> > +{ typedef T type; }; + +template<typename T> struct class_transform< T, add_reference<_> > +{ typedef T & type; }; + +template<typename T> struct class_transform< T, add_pointer<_> > +{ typedef T * type; }; + +template<typename T> struct class_transform< T, remove_cv<_> > +{ typedef typename boost::remove_cv<T>::type type; }; + +template<typename T> struct class_transform< T, add_reference< remove_cv<_> > > +{ typedef typename boost::remove_cv<T>::type & type; }; + +template<typename T> struct class_transform< T, add_pointer< remove_cv<_> > > +{ typedef typename boost::remove_cv<T>::type * type; }; + +template<typename T, typename U> struct class_transform< T, mpl::always<U> > +{ typedef U type; }; +#endif + + +} } } // namespace ::boost::function_types::detail + +#endif + |