//  (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

// should be the last #include

#include <boost/type_traits/detail/size_t_trait_def.hpp>

namespace boost {

namespace detail{

#if defined( __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_TEMPLATE_PARTIAL_SPECIALIZATION) && !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(__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>

{

#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) 

   typedef ::boost::integral_constant<std::size_t, ::boost::detail::extent_imp<T,N>::value> base_; 

   using base_::value;

#endif

    BOOST_MPL_AUX_LAMBDA_SUPPORT(1,extent,(T))

};

} // namespace boost

#include <boost/type_traits/detail/size_t_trait_undef.hpp>

#endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED