ceph/src/boost/libs/function_types/include/boost/function_types/detail/classifier.hpp

   1
   2 // (C) Copyright Tobias Schwinger
   3 //
   4 // Use modification and distribution are subject to the boost Software License,
   5 // Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt).
   6
   7 //------------------------------------------------------------------------------
   8
   9 #ifndef BOOST_FT_DETAIL_CLASSIFIER_HPP_INCLUDED
  10 #define BOOST_FT_DETAIL_CLASSIFIER_HPP_INCLUDED
  11
  12 #include <boost/type.hpp>
  13 #include <boost/config.hpp>
  14 #include <boost/type_traits/is_reference.hpp>
  15 #include <boost/type_traits/add_reference.hpp>
  16
  17 #include <boost/function_types/config/config.hpp>
  18 #include <boost/function_types/property_tags.hpp>
  19
  20 namespace boost { namespace function_types { namespace detail {
  21
  22 template<typename T> struct classifier;
  23
  24 template<std::size_t S> struct char_array { typedef char (&type)[S]; };
  25
  26 template<bits_t Flags, bits_t CCID, std::size_t Arity> struct encode_charr
  27 {
  28   typedef typename char_array<
  29     ::boost::function_types::detail::encode_charr_impl<Flags,CCID,Arity>::value
  30   >::type type;
  31 };
  32
  33 #if defined(BOOST_MSVC) || (defined(__BORLANDC__) && !defined(BOOST_DISABLE_WIN32))
  34 #   define BOOST_FT_DECL __cdecl
  35 #else
  36 #   define BOOST_FT_DECL /**/
  37 #endif
  38
  39 char BOOST_FT_DECL classifier_impl(...);
  40
  41 #define BOOST_FT_variations BOOST_FT_function|BOOST_FT_pointer|\
  42                             BOOST_FT_member_pointer
  43
  44 #define BOOST_FT_type_function(cc,name) BOOST_FT_SYNTAX( \
  45     R BOOST_PP_EMPTY,BOOST_PP_LPAREN,cc,* BOOST_PP_EMPTY,name,BOOST_PP_RPAREN)
  46
  47 #define BOOST_FT_type_function_pointer(cc,name) BOOST_FT_SYNTAX( \
  48     R BOOST_PP_EMPTY,BOOST_PP_LPAREN,cc,** BOOST_PP_EMPTY,name,BOOST_PP_RPAREN)
  49
  50 #define BOOST_FT_type_member_function_pointer(cc,name) BOOST_FT_SYNTAX( \
  51     R BOOST_PP_EMPTY,BOOST_PP_LPAREN,cc,T0::** BOOST_PP_EMPTY,name,BOOST_PP_RPAREN)
  52
  53 #define BOOST_FT_al_path boost/function_types/detail/classifier_impl
  54 #include <boost/function_types/detail/pp_loop.hpp>
  55
  56 template<typename T> struct classifier_bits
  57 {
  58   static typename boost::add_reference<T>::type tester;
  59
  60   BOOST_STATIC_CONSTANT(bits_t,value = (bits_t)sizeof(
  61     boost::function_types::detail::classifier_impl(& tester)
  62   )-1);
  63 };
  64
  65 template<typename T> struct classifier
  66 {
  67   typedef detail::constant<
  68     ::boost::function_types::detail::decode_bits<
  69       ::boost::function_types::detail::classifier_bits<T>::value
  70     >::tag_bits >
  71   bits;
  72
  73   typedef detail::full_mask mask;
  74
  75   typedef detail::constant<
  76     ::boost::function_types::detail::decode_bits<
  77       ::boost::function_types::detail::classifier_bits<T>::value
  78     >::arity >
  79   function_arity;
  80 };
  81
  82
  83
  84 } } } // namespace ::boost::function_types::detail
  85
  86 #endif
  87