ceph/src/boost/libs/range/include/boost/range/detail/remove_extent.hpp

   1 // Boost.Range library
   2 //
   3 //  Copyright Jonathan Turkanis 2005. Use, modification and
   4 //  distribution is subject to the Boost Software License, Version
   5 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 //  http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 // For more information, see http://www.boost.org/libs/range/
   9 //
  10
  11
  12 #ifndef BOOST_RANGE_DETAIL_REMOVE_BOUNDS_HPP
  13 #define BOOST_RANGE_DETAIL_REMOVE_BOUNDS_HPP
  14
  15 #include <boost/config.hpp>  // MSVC, NO_INTRINSIC_WCHAR_T, put size_t in std.
  16 #include <cstddef>
  17 #include <boost/mpl/eval_if.hpp>
  18 #include <boost/mpl/identity.hpp>
  19 #include <boost/type_traits/is_same.hpp>
  20
  21 namespace boost
  22 {
  23     namespace range_detail
  24     {
  25
  26         template< typename Case1 = mpl::true_,
  27                   typename Type1 = mpl::void_,
  28                   typename Case2 = mpl::true_,
  29                   typename Type2 = mpl::void_,
  30                   typename Case3 = mpl::true_,
  31                   typename Type3 = mpl::void_,
  32                   typename Case4 = mpl::true_,
  33                   typename Type4 = mpl::void_,
  34                   typename Case5 = mpl::true_,
  35                   typename Type5 = mpl::void_,
  36                   typename Case6 = mpl::true_,
  37                   typename Type6 = mpl::void_,
  38                   typename Case7 = mpl::true_,
  39                   typename Type7 = mpl::void_,
  40                   typename Case8 = mpl::true_,
  41                   typename Type8 = mpl::void_,
  42                   typename Case9 = mpl::true_,
  43                   typename Type9 = mpl::void_,
  44                   typename Case10 = mpl::true_,
  45                   typename Type10 = mpl::void_,
  46                   typename Case11 = mpl::true_,
  47                   typename Type11 = mpl::void_,
  48                   typename Case12 = mpl::true_,
  49                   typename Type12 = mpl::void_,
  50                   typename Case13 = mpl::true_,
  51                   typename Type13 = mpl::void_,
  52                   typename Case14 = mpl::true_,
  53                   typename Type14 = mpl::void_,
  54                   typename Case15 = mpl::true_,
  55                   typename Type15 = mpl::void_,
  56                   typename Case16 = mpl::true_,
  57                   typename Type16 = mpl::void_,
  58                   typename Case17 = mpl::true_,
  59                   typename Type17 = mpl::void_,
  60                   typename Case18 = mpl::true_,
  61                   typename Type18 = mpl::void_,
  62                   typename Case19 = mpl::true_,
  63                   typename Type19 = mpl::void_,
  64                   typename Case20 = mpl::true_,
  65                   typename Type20 = mpl::void_>
  66         struct select {
  67             typedef typename
  68                     mpl::eval_if<
  69                         Case1, mpl::identity<Type1>, mpl::eval_if<
  70                         Case2, mpl::identity<Type2>, mpl::eval_if<
  71                         Case3, mpl::identity<Type3>, mpl::eval_if<
  72                         Case4, mpl::identity<Type4>, mpl::eval_if<
  73                         Case5, mpl::identity<Type5>, mpl::eval_if<
  74                         Case6, mpl::identity<Type6>, mpl::eval_if<
  75                         Case7, mpl::identity<Type7>, mpl::eval_if<
  76                         Case8, mpl::identity<Type8>, mpl::eval_if<
  77                         Case9, mpl::identity<Type9>, mpl::if_<
  78                         Case10, Type10, mpl::void_ > > > > > > > > >
  79                     >::type result1;
  80             typedef typename
  81                     mpl::eval_if<
  82                         Case11, mpl::identity<Type11>, mpl::eval_if<
  83                         Case12, mpl::identity<Type12>, mpl::eval_if<
  84                         Case13, mpl::identity<Type13>, mpl::eval_if<
  85                         Case14, mpl::identity<Type14>, mpl::eval_if<
  86                         Case15, mpl::identity<Type15>, mpl::eval_if<
  87                         Case16, mpl::identity<Type16>, mpl::eval_if<
  88                         Case17, mpl::identity<Type17>, mpl::eval_if<
  89                         Case18, mpl::identity<Type18>, mpl::eval_if<
  90                         Case19, mpl::identity<Type19>, mpl::if_<
  91                         Case20, Type20, mpl::void_ > > > > > > > > >
  92                     > result2;
  93             typedef typename
  94                     mpl::eval_if<
  95                         is_same<result1, mpl::void_>,
  96                         result2,
  97                         mpl::identity<result1>
  98                     >::type type;
  99         };
 100
 101         template<typename T>
 102         struct remove_extent {
 103             static T* ar;
 104             BOOST_STATIC_CONSTANT(std::size_t, size = sizeof(*ar) / sizeof((*ar)[0]));
 105
 106             typedef typename
 107                     select<
 108                         is_same<T, bool[size]>,                  bool,
 109                         is_same<T, char[size]>,                  char,
 110                         is_same<T, signed char[size]>,           signed char,
 111                         is_same<T, unsigned char[size]>,         unsigned char,
 112                     #ifndef BOOST_NO_INTRINSIC_WCHAR_T
 113                         is_same<T, wchar_t[size]>,               wchar_t,
 114                     #endif
 115                         is_same<T, short[size]>,                 short,
 116                         is_same<T, unsigned short[size]>,        unsigned short,
 117                         is_same<T, int[size]>,                   int,
 118                         is_same<T, unsigned int[size]>,          unsigned int,
 119                         is_same<T, long[size]>,                  long,
 120                         is_same<T, unsigned long[size]>,         unsigned long,
 121                         is_same<T, float[size]>,                 float,
 122                         is_same<T, double[size]>,                double,
 123                         is_same<T, long double[size]>,           long double
 124                     >::type result1;
 125             typedef typename
 126                     select<
 127                         is_same<T, const bool[size]>,            const bool,
 128                         is_same<T, const char[size]>,            const char,
 129                         is_same<T, const signed char[size]>,     const signed char,
 130                         is_same<T, const unsigned char[size]>,   const unsigned char,
 131                     #ifndef BOOST_NO_INTRINSIC_WCHAR_T
 132                         is_same<T, const wchar_t[size]>,         const wchar_t,
 133                     #endif
 134                         is_same<T, const short[size]>,           const short,
 135                         is_same<T, const unsigned short[size]>,  const unsigned short,
 136                         is_same<T, const int[size]>,             const int,
 137                         is_same<T, const unsigned int[size]>,    const unsigned int,
 138                         is_same<T, const long[size]>,            const long,
 139                         is_same<T, const unsigned long[size]>,   const unsigned long,
 140                         is_same<T, const float[size]>,           const float,
 141                         is_same<T, const double[size]>,          const double,
 142                         is_same<T, const long double[size]>,     const long double
 143                     > result2;
 144             typedef typename
 145                     mpl::eval_if<
 146                         is_same<result1, mpl::void_>,
 147                         result2,
 148                         mpl::identity<result1>
 149                     >::type type;
 150         };
 151
 152     } // namespace 'range_detail'
 153
 154 } // namespace 'boost'
 155
 156
 157 #endif