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// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard
// Hinnant & John Maddock 2000.
// 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_DETAIL_CV_TRAITS_IMPL_HPP_INCLUDED
#define BOOST_TT_DETAIL_CV_TRAITS_IMPL_HPP_INCLUDED
#include <cstddef>
#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>
// implementation helper:
namespace boost {
namespace detail {
#if BOOST_WORKAROUND(BOOST_MSVC, == 1700)
#define BOOST_TT_AUX_CV_TRAITS_IMPL_PARAM(X) X
template <typename T>
struct cv_traits_imp
{
BOOST_STATIC_CONSTANT(bool, is_const = false);
BOOST_STATIC_CONSTANT(bool, is_volatile = false);
typedef T unqualified_type;
};
template <typename T>
struct cv_traits_imp<T[]>
{
BOOST_STATIC_CONSTANT(bool, is_const = false);
BOOST_STATIC_CONSTANT(bool, is_volatile = false);
typedef T unqualified_type[];
};
template <typename T>
struct cv_traits_imp<const T[]>
{
BOOST_STATIC_CONSTANT(bool, is_const = true);
BOOST_STATIC_CONSTANT(bool, is_volatile = false);
typedef T unqualified_type[];
};
template <typename T>
struct cv_traits_imp<volatile T[]>
{
BOOST_STATIC_CONSTANT(bool, is_const = false);
BOOST_STATIC_CONSTANT(bool, is_volatile = true);
typedef T unqualified_type[];
};
template <typename T>
struct cv_traits_imp<const volatile T[]>
{
BOOST_STATIC_CONSTANT(bool, is_const = true);
BOOST_STATIC_CONSTANT(bool, is_volatile = true);
typedef T unqualified_type[];
};
template <typename T, std::size_t N>
struct cv_traits_imp<T[N]>
{
BOOST_STATIC_CONSTANT(bool, is_const = false);
BOOST_STATIC_CONSTANT(bool, is_volatile = false);
typedef T unqualified_type[N];
};
template <typename T, std::size_t N>
struct cv_traits_imp<const T[N]>
{
BOOST_STATIC_CONSTANT(bool, is_const = true);
BOOST_STATIC_CONSTANT(bool, is_volatile = false);
typedef T unqualified_type[N];
};
template <typename T, std::size_t N>
struct cv_traits_imp<volatile T[N]>
{
BOOST_STATIC_CONSTANT(bool, is_const = false);
BOOST_STATIC_CONSTANT(bool, is_volatile = true);
typedef T unqualified_type[N];
};
template <typename T, std::size_t N>
struct cv_traits_imp<const volatile T[N]>
{
BOOST_STATIC_CONSTANT(bool, is_const = true);
BOOST_STATIC_CONSTANT(bool, is_volatile = true);
typedef T unqualified_type[N];
};
#else
#define BOOST_TT_AUX_CV_TRAITS_IMPL_PARAM(X) X *
template <typename T> struct cv_traits_imp {};
template <typename T>
struct cv_traits_imp<T*>
{
BOOST_STATIC_CONSTANT(bool, is_const = false);
BOOST_STATIC_CONSTANT(bool, is_volatile = false);
typedef T unqualified_type;
};
#endif
template <typename T>
struct cv_traits_imp<BOOST_TT_AUX_CV_TRAITS_IMPL_PARAM(const T)>
{
BOOST_STATIC_CONSTANT(bool, is_const = true);
BOOST_STATIC_CONSTANT(bool, is_volatile = false);
typedef T unqualified_type;
};
template <typename T>
struct cv_traits_imp<BOOST_TT_AUX_CV_TRAITS_IMPL_PARAM(volatile T)>
{
BOOST_STATIC_CONSTANT(bool, is_const = false);
BOOST_STATIC_CONSTANT(bool, is_volatile = true);
typedef T unqualified_type;
};
template <typename T>
struct cv_traits_imp<BOOST_TT_AUX_CV_TRAITS_IMPL_PARAM(const volatile T)>
{
BOOST_STATIC_CONSTANT(bool, is_const = true);
BOOST_STATIC_CONSTANT(bool, is_volatile = true);
typedef T unqualified_type;
};
} // namespace detail
} // namespace boost
#endif // BOOST_TT_DETAIL_CV_TRAITS_IMPL_HPP_INCLUDED
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