boost/type_traits/is_base_of_tr1.hpp

   1
   2 //  (C) Copyright Rani Sharoni 2003-2005.
   3 //  Use, modification and distribution are subject to the Boost Software License,
   4 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 //  http://www.boost.org/LICENSE_1_0.txt).
   6 //
   7 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
   8
   9 #ifndef BOOST_TT_IS_BASE_OF_TR1_HPP_INCLUDED
  10 #define BOOST_TT_IS_BASE_OF_TR1_HPP_INCLUDED
  11
  12 #include <boost/type_traits/is_base_and_derived.hpp>
  13 #include <boost/type_traits/is_same.hpp>
  14 #include <boost/type_traits/is_class.hpp>
  15 #include <boost/type_traits/detail/ice_or.hpp>
  16
  17 // should be the last #include
  18 #include <boost/type_traits/detail/bool_trait_def.hpp>
  19
  20 namespace boost { namespace tr1{
  21
  22    namespace detail{
  23       template <class B, class D>
  24       struct is_base_of_imp
  25       {
  26           typedef typename remove_cv<B>::type ncvB;
  27           typedef typename remove_cv<D>::type ncvD;
  28           BOOST_STATIC_CONSTANT(bool, value = (::boost::type_traits::ice_or<
  29             (::boost::detail::is_base_and_derived_impl<ncvB,ncvD>::value),
  30             (::boost::is_same<ncvB,ncvD>::value)>::value));
  31       };
  32    }
  33
  34 BOOST_TT_AUX_BOOL_TRAIT_DEF2(
  35       is_base_of
  36     , Base
  37     , Derived
  38     , (::boost::tr1::detail::is_base_of_imp<Base, Derived>::value))
  39
  40 BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_2(typename Base,typename Derived,is_base_of,Base&,Derived,false)
  41 BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_2(typename Base,typename Derived,is_base_of,Base,Derived&,false)
  42 BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_2(typename Base,typename Derived,is_base_of,Base&,Derived&,false)
  43
  44 } } // namespace boost
  45
  46 #include <boost/type_traits/detail/bool_trait_undef.hpp>
  47
  48 #endif // BOOST_TT_IS_BASE_OF_TR1_HPP_INCLUDED