1
2// (C) Copyright John Maddock 2005.
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
10#ifndef BOOST_TT_RANK_HPP_INCLUDED
11#define BOOST_TT_RANK_HPP_INCLUDED
12
13#include <cstddef> // size_t
14#include <boost/type_traits/integral_constant.hpp>
15
16namespace boost {
17
18#if !defined( BOOST_CODEGEARC )
19
20namespace detail{
21
22template <class T, std::size_t N>
23struct rank_imp
24{
25 BOOST_STATIC_CONSTANT(std::size_t, value = N);
26};
27#if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
28template <class T, std::size_t R, std::size_t N>
29struct rank_imp<T[R], N>
30{
31 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
32};
33
34template <class T, std::size_t R, std::size_t N>
35struct rank_imp<T const[R], N>
36{
37 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
38};
39
40template <class T, std::size_t R, std::size_t N>
41struct rank_imp<T volatile[R], N>
42{
43 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
44};
45
46template <class T, std::size_t R, std::size_t N>
47struct rank_imp<T const volatile[R], N>
48{
49 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
50};
51
52#if !BOOST_WORKAROUND(BOOST_BORLANDC, < 0x600) && !defined(__IBMCPP__) && !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840))
53template <class T, std::size_t N>
54struct rank_imp<T[], N>
55{
56 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
57};
58template <class T, std::size_t N>
59struct rank_imp<T const[], N>
60{
61 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
62};
63template <class T, std::size_t N>
64struct rank_imp<T volatile[], N>
65{
66 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
67};
68template <class T, std::size_t N>
69struct rank_imp<T const volatile[], N>
70{
71 BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::rank_imp<T, N+1>::value));
72};
73#endif
74#endif
75}
76
77#endif // !defined( BOOST_CODEGEARC )
78
79#if defined( BOOST_CODEGEARC )
80template <class T> struct rank : public integral_constant<std::size_t, __array_rank(T)>{};
81#else
82template <class T> struct rank : public integral_constant<std::size_t, (::boost::detail::rank_imp<T, 0>::value)>{};
83#endif
84
85} // namespace boost
86
87#endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED
88

source code of include/boost/type_traits/rank.hpp