| |
| // (C) Copyright Rani Sharoni 2003-2005. |
| // Use, modification and distribution are subject to 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/type_traits for most recent version including documentation. |
| |
| #ifndef BOOST_TT_IS_BASE_OF_HPP_INCLUDED |
| #define BOOST_TT_IS_BASE_OF_HPP_INCLUDED |
| |
| #include <boost/type_traits/is_base_and_derived.hpp> |
| #include <boost/type_traits/is_same.hpp> |
| #include <boost/type_traits/is_class.hpp> |
| |
| namespace boost { |
| |
| namespace detail{ |
| template <class B, class D> |
| struct is_base_of_imp |
| { |
| typedef typename remove_cv<B>::type ncvB; |
| typedef typename remove_cv<D>::type ncvD; |
| BOOST_STATIC_CONSTANT(bool, value = ( |
| (::boost::detail::is_base_and_derived_impl<ncvB,ncvD>::value) || |
| (::boost::is_same<ncvB,ncvD>::value && ::boost::is_class<ncvB>::value))); |
| }; |
| } |
| |
| template <class Base, class Derived> struct is_base_of |
| : public integral_constant<bool, (::boost::detail::is_base_of_imp<Base, Derived>::value)> {}; |
| |
| template <class Base, class Derived> struct is_base_of<Base, Derived&> : false_type{}; |
| template <class Base, class Derived> struct is_base_of<Base&, Derived&> : false_type{}; |
| template <class Base, class Derived> struct is_base_of<Base&, Derived> : false_type{}; |
| |
| } // namespace boost |
| |
| #endif // BOOST_TT_IS_BASE_AND_DERIVED_HPP_INCLUDED |