dcomp_mem_fun.hpp 1.6 KB

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  1. // (C) Copyright Edward Diener 2011,2012,2013
  2. // Use, modification and distribution are subject to the Boost Software License,
  3. // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  4. // http://www.boost.org/LICENSE_1_0.txt).
  5. #if !defined(BOOST_TTI_DETAIL_COMP_MEM_FUN_HPP)
  6. #define BOOST_TTI_DETAIL_COMP_MEM_FUN_HPP
  7. #include <boost/config.hpp>
  8. #include <boost/mpl/bool.hpp>
  9. #include <boost/preprocessor/cat.hpp>
  10. #include <boost/tti/detail/dftclass.hpp>
  11. #include <boost/tti/detail/dnullptr.hpp>
  12. #include <boost/tti/gen/namespace_gen.hpp>
  13. #include <boost/type_traits/remove_const.hpp>
  14. #include <boost/type_traits/detail/yes_no_type.hpp>
  15. #define BOOST_TTI_DETAIL_TRAIT_HAS_COMP_MEMBER_FUNCTION(trait,name) \
  16. template<class BOOST_TTI_DETAIL_TP_T> \
  17. struct BOOST_PP_CAT(trait,_detail_hcmf) \
  18. { \
  19. template<class BOOST_TTI_DETAIL_TP_F> \
  20. struct cl_type : \
  21. boost::remove_const \
  22. < \
  23. typename BOOST_TTI_NAMESPACE::detail::class_type<BOOST_TTI_DETAIL_TP_F>::type \
  24. > \
  25. { \
  26. }; \
  27. \
  28. template<BOOST_TTI_DETAIL_TP_T> \
  29. struct helper; \
  30. \
  31. template<class BOOST_TTI_DETAIL_TP_U> \
  32. static ::boost::type_traits::yes_type chkt(helper<&BOOST_TTI_DETAIL_TP_U::name> *); \
  33. \
  34. template<class BOOST_TTI_DETAIL_TP_U> \
  35. static ::boost::type_traits::no_type chkt(...); \
  36. \
  37. BOOST_STATIC_CONSTANT(bool,value=sizeof(chkt<typename cl_type<BOOST_TTI_DETAIL_TP_T>::type>(BOOST_TTI_DETAIL_NULLPTR))==sizeof(::boost::type_traits::yes_type)); \
  38. \
  39. typedef boost::mpl::bool_<value> type; \
  40. }; \
  41. /**/
  42. #endif // BOOST_TTI_DETAIL_COMP_MEM_FUN_HPP