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