rank.hpp 2.5 KB

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  1. // (C) Copyright John Maddock 2005.
  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. //
  6. // See http://www.boost.org/libs/type_traits for most recent version including documentation.
  7. #ifndef BOOST_TT_RANK_HPP_INCLUDED
  8. #define BOOST_TT_RANK_HPP_INCLUDED
  9. #include <cstddef> // size_t
  10. #include <boost/type_traits/integral_constant.hpp>
  11. namespace boost {
  12. #if !defined( __CODEGEARC__ )
  13. namespace detail{
  14. template <class T, std::size_t N>
  15. struct rank_imp
  16. {
  17. BOOST_STATIC_CONSTANT(std::size_t, value = N);
  18. };
  19. #if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
  20. template <class T, std::size_t R, std::size_t N>
  21. struct rank_imp<T[R], N>
  22. {
  23. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  24. };
  25. template <class T, std::size_t R, std::size_t N>
  26. struct rank_imp<T const[R], N>
  27. {
  28. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  29. };
  30. template <class T, std::size_t R, std::size_t N>
  31. struct rank_imp<T volatile[R], N>
  32. {
  33. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  34. };
  35. template <class T, std::size_t R, std::size_t N>
  36. struct rank_imp<T const volatile[R], N>
  37. {
  38. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  39. };
  40. #if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(__IBMCPP__) && !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840))
  41. template <class T, std::size_t N>
  42. struct rank_imp<T[], N>
  43. {
  44. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  45. };
  46. template <class T, std::size_t N>
  47. struct rank_imp<T const[], N>
  48. {
  49. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  50. };
  51. template <class T, std::size_t N>
  52. struct rank_imp<T volatile[], N>
  53. {
  54. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  55. };
  56. template <class T, std::size_t N>
  57. struct rank_imp<T const volatile[], N>
  58. {
  59. BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
  60. };
  61. #endif
  62. #endif
  63. }
  64. #endif // !defined( __CODEGEARC__ )
  65. #if defined( __CODEGEARC__ )
  66. template <class T> struct rank : public integral_constant<std::size_t, __array_rank(T)>{};
  67. #else
  68. template <class T> struct rank : public integral_constant<std::size_t, (::boost::detail::rank_imp<T, 0>::value)>{};
  69. #endif
  70. } // namespace boost
  71. #endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED