text: 
  // (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_CLASSIFIER_HPP_INCLUDED
  #define BOOST_FT_DETAIL_CLASSIFIER_HPP_INCLUDED
  
  #include <boost/type.hpp>
  #include <boost/config.hpp>
  #include <boost/type_traits/config.hpp>
  #include <boost/type_traits/is_reference.hpp>
  #include <boost/type_traits/add_reference.hpp>
  
  #include <boost/function_types/config/config.hpp>
  #include <boost/function_types/property_tags.hpp>
  
  namespace boost { namespace function_types { namespace detail {
  
  template<typename T> struct classifier;
  
  template<std::size_t S> struct char_array { typedef char (&type)[S]; };
  
  template<bits_t Flags, bits_t CCID, std::size_t Arity> struct encode_charr
  {
    typedef typename char_array<
      ::boost::function_types::detail::encode_charr_impl<Flags,CCID,Arity>::value 
    >::type type;
  };
  
  char BOOST_TT_DECL classifier_impl(...);
  
  #define BOOST_FT_variations BOOST_FT_function|BOOST_FT_pointer|\
                              BOOST_FT_member_pointer
  
  #define BOOST_FT_type_function(cc,name) BOOST_FT_SYNTAX( \
      R BOOST_PP_EMPTY,BOOST_PP_LPAREN,cc,* BOOST_PP_EMPTY,name,BOOST_PP_RPAREN)
  
  #define BOOST_FT_type_function_pointer(cc,name) BOOST_FT_SYNTAX( \
      R BOOST_PP_EMPTY,BOOST_PP_LPAREN,cc,** BOOST_PP_EMPTY,name,BOOST_PP_RPAREN)
  
  #define BOOST_FT_type_member_function_pointer(cc,name) BOOST_FT_SYNTAX( \
      R BOOST_PP_EMPTY,BOOST_PP_LPAREN,cc,T0::** BOOST_PP_EMPTY,name,BOOST_PP_RPAREN)
  
  #define BOOST_FT_al_path boost/function_types/detail/classifier_impl
  #include <boost/function_types/detail/pp_loop.hpp>
  
  template<typename T> struct classifier_bits
  {
    static typename boost::add_reference<T>::type tester;
  
    BOOST_STATIC_CONSTANT(bits_t,value = (bits_t)sizeof(
      boost::function_types::detail::classifier_impl(& tester) 
    )-1);
  };
  
  template<typename T> struct classifier
  {
    typedef detail::constant<
      ::boost::function_types::detail::decode_bits<
        ::boost::function_types::detail::classifier_bits<T>::value
      >::tag_bits > 
    bits;
  
    typedef detail::full_mask mask;
   
    typedef detail::constant<
      ::boost::function_types::detail::decode_bits<
        ::boost::function_types::detail::classifier_bits<T>::value
      >::arity > 
    function_arity;
  };
  
  
  
  } } } // namespace ::boost::function_types::detail
  
  #endif
  
  