140 lines
3.8 KiB
Plaintext
140 lines
3.8 KiB
Plaintext
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// (C) Copyright John Maddock 2005.
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt).
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//
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// See http://www.boost.org/libs/type_traits for most recent version including documentation.
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#ifndef BOOST_TT_EXTENT_HPP_INCLUDED
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#define BOOST_TT_EXTENT_HPP_INCLUDED
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#include <cstddef> // size_t
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#include <boost/type_traits/integral_constant.hpp>
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#include <boost/detail/workaround.hpp>
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namespace boost {
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namespace detail{
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#if defined( __CODEGEARC__ )
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// wrap the impl as main trait provides additional MPL lambda support
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template < typename T, std::size_t N >
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struct extent_imp {
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static const std::size_t value = __array_extent(T, N);
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};
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#else
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template <class T, std::size_t N>
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struct extent_imp
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = 0);
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};
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#if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
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template <class T, std::size_t R, std::size_t N>
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struct extent_imp<T[R], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T, std::size_t R, std::size_t N>
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struct extent_imp<T const[R], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T, std::size_t R, std::size_t N>
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struct extent_imp<T volatile[R], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T, std::size_t R, std::size_t N>
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struct extent_imp<T const volatile[R], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T, std::size_t R>
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struct extent_imp<T[R],0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = R);
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};
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template <class T, std::size_t R>
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struct extent_imp<T const[R], 0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = R);
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};
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template <class T, std::size_t R>
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struct extent_imp<T volatile[R], 0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = R);
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};
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template <class T, std::size_t R>
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struct extent_imp<T const volatile[R], 0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = R);
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};
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#if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(__IBMCPP__) && !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840)) && !defined(__MWERKS__)
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template <class T, std::size_t N>
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struct extent_imp<T[], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T, std::size_t N>
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struct extent_imp<T const[], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T, std::size_t N>
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struct extent_imp<T volatile[], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T, std::size_t N>
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struct extent_imp<T const volatile[], N>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value));
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};
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template <class T>
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struct extent_imp<T[], 0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = 0);
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};
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template <class T>
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struct extent_imp<T const[], 0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = 0);
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};
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template <class T>
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struct extent_imp<T volatile[], 0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = 0);
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};
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template <class T>
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struct extent_imp<T const volatile[], 0>
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{
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BOOST_STATIC_CONSTANT(std::size_t, value = 0);
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};
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#endif
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#endif
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#endif // non-CodeGear implementation
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} // ::boost::detail
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template <class T, std::size_t N = 0>
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struct extent
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: public ::boost::integral_constant<std::size_t, ::boost::detail::extent_imp<T,N>::value>
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{
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};
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} // namespace boost
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#endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED
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