ceph/src/boost/libs/type_traits/include/boost/type_traits/function_traits.hpp

   1
   2 //  Copyright 2000 John Maddock (john@johnmaddock.co.uk)
   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_FUNCTION_TRAITS_HPP_INCLUDED
  10 #define BOOST_TT_FUNCTION_TRAITS_HPP_INCLUDED
  11
  12 #include <boost/config.hpp>
  13 #include <boost/type_traits/is_function.hpp>
  14 #include <boost/type_traits/add_pointer.hpp>
  15
  16 namespace boost {
  17
  18 namespace detail {
  19
  20 template<typename Function> struct function_traits_helper;
  21
  22 template<typename R>
  23 struct function_traits_helper<R (*)(void)>
  24 {
  25   BOOST_STATIC_CONSTANT(unsigned, arity = 0);
  26   typedef R result_type;
  27 };
  28
  29 template<typename R, typename T1>
  30 struct function_traits_helper<R (*)(T1)>
  31 {
  32   BOOST_STATIC_CONSTANT(unsigned, arity = 1);
  33   typedef R result_type;
  34   typedef T1 arg1_type;
  35   typedef T1 argument_type;
  36 };
  37
  38 template<typename R, typename T1, typename T2>
  39 struct function_traits_helper<R (*)(T1, T2)>
  40 {
  41   BOOST_STATIC_CONSTANT(unsigned, arity = 2);
  42   typedef R result_type;
  43   typedef T1 arg1_type;
  44   typedef T2 arg2_type;
  45   typedef T1 first_argument_type;
  46   typedef T2 second_argument_type;
  47 };
  48
  49 template<typename R, typename T1, typename T2, typename T3>
  50 struct function_traits_helper<R (*)(T1, T2, T3)>
  51 {
  52   BOOST_STATIC_CONSTANT(unsigned, arity = 3);
  53   typedef R result_type;
  54   typedef T1 arg1_type;
  55   typedef T2 arg2_type;
  56   typedef T3 arg3_type;
  57 };
  58
  59 template<typename R, typename T1, typename T2, typename T3, typename T4>
  60 struct function_traits_helper<R (*)(T1, T2, T3, T4)>
  61 {
  62   BOOST_STATIC_CONSTANT(unsigned, arity = 4);
  63   typedef R result_type;
  64   typedef T1 arg1_type;
  65   typedef T2 arg2_type;
  66   typedef T3 arg3_type;
  67   typedef T4 arg4_type;
  68 };
  69
  70 template<typename R, typename T1, typename T2, typename T3, typename T4,
  71          typename T5>
  72 struct function_traits_helper<R (*)(T1, T2, T3, T4, T5)>
  73 {
  74   BOOST_STATIC_CONSTANT(unsigned, arity = 5);
  75   typedef R result_type;
  76   typedef T1 arg1_type;
  77   typedef T2 arg2_type;
  78   typedef T3 arg3_type;
  79   typedef T4 arg4_type;
  80   typedef T5 arg5_type;
  81 };
  82
  83 template<typename R, typename T1, typename T2, typename T3, typename T4,
  84          typename T5, typename T6>
  85 struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6)>
  86 {
  87   BOOST_STATIC_CONSTANT(unsigned, arity = 6);
  88   typedef R result_type;
  89   typedef T1 arg1_type;
  90   typedef T2 arg2_type;
  91   typedef T3 arg3_type;
  92   typedef T4 arg4_type;
  93   typedef T5 arg5_type;
  94   typedef T6 arg6_type;
  95 };
  96
  97 template<typename R, typename T1, typename T2, typename T3, typename T4,
  98          typename T5, typename T6, typename T7>
  99 struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7)>
 100 {
 101   BOOST_STATIC_CONSTANT(unsigned, arity = 7);
 102   typedef R result_type;
 103   typedef T1 arg1_type;
 104   typedef T2 arg2_type;
 105   typedef T3 arg3_type;
 106   typedef T4 arg4_type;
 107   typedef T5 arg5_type;
 108   typedef T6 arg6_type;
 109   typedef T7 arg7_type;
 110 };
 111
 112 template<typename R, typename T1, typename T2, typename T3, typename T4,
 113          typename T5, typename T6, typename T7, typename T8>
 114 struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7, T8)>
 115 {
 116   BOOST_STATIC_CONSTANT(unsigned, arity = 8);
 117   typedef R result_type;
 118   typedef T1 arg1_type;
 119   typedef T2 arg2_type;
 120   typedef T3 arg3_type;
 121   typedef T4 arg4_type;
 122   typedef T5 arg5_type;
 123   typedef T6 arg6_type;
 124   typedef T7 arg7_type;
 125   typedef T8 arg8_type;
 126 };
 127
 128 template<typename R, typename T1, typename T2, typename T3, typename T4,
 129          typename T5, typename T6, typename T7, typename T8, typename T9>
 130 struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9)>
 131 {
 132   BOOST_STATIC_CONSTANT(unsigned, arity = 9);
 133   typedef R result_type;
 134   typedef T1 arg1_type;
 135   typedef T2 arg2_type;
 136   typedef T3 arg3_type;
 137   typedef T4 arg4_type;
 138   typedef T5 arg5_type;
 139   typedef T6 arg6_type;
 140   typedef T7 arg7_type;
 141   typedef T8 arg8_type;
 142   typedef T9 arg9_type;
 143 };
 144
 145 template<typename R, typename T1, typename T2, typename T3, typename T4,
 146          typename T5, typename T6, typename T7, typename T8, typename T9,
 147          typename T10>
 148 struct function_traits_helper<R (*)(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)>
 149 {
 150   BOOST_STATIC_CONSTANT(unsigned, arity = 10);
 151   typedef R result_type;
 152   typedef T1 arg1_type;
 153   typedef T2 arg2_type;
 154   typedef T3 arg3_type;
 155   typedef T4 arg4_type;
 156   typedef T5 arg5_type;
 157   typedef T6 arg6_type;
 158   typedef T7 arg7_type;
 159   typedef T8 arg8_type;
 160   typedef T9 arg9_type;
 161   typedef T10 arg10_type;
 162 };
 163
 164 } // end namespace detail
 165
 166 template<typename Function>
 167 struct function_traits :
 168   public boost::detail::function_traits_helper<typename boost::add_pointer<Function>::type>
 169 {
 170 };
 171
 172 }
 173
 174 #endif // BOOST_TT_FUNCTION_TRAITS_HPP_INCLUDED