Sprout/sprout/container/deep_internal.hpp
2015-12-09 19:54:35 +09:00

50 lines
1.7 KiB
C++

/*=============================================================================
Copyright (c) 2011-2015 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under 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)
=============================================================================*/
#ifndef SPROUT_CONTAINER_DEEP_INTERNAL_HPP
#define SPROUT_CONTAINER_DEEP_INTERNAL_HPP
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/container/internal.hpp>
#include <sprout/type_traits/identity.hpp>
namespace sprout {
namespace containers {
namespace detail {
template<typename Container, typename Prev, typename = void>
struct deep_internal_impl;
template<typename Container, typename Prev>
struct deep_internal_impl<
Container, Prev,
typename std::enable_if<!std::is_same<Container, Prev&&>::value>::type
>
: public sprout::containers::detail::deep_internal_impl<
typename sprout::containers::internal<Container>::type, Container
>
{};
template<typename Container, typename Prev>
struct deep_internal_impl<
Container, Prev,
typename std::enable_if<std::is_same<Container, Prev&&>::value>::type
>
: public sprout::identity<Container>
{};
} // namespace detail
//
// deep_internal
//
template<typename Container>
struct deep_internal
: public sprout::containers::detail::deep_internal_impl<
typename sprout::containers::internal<Container>::type, Container
>
{};
} // namespace containers
} // namespace sprout
#endif // #ifndef SPROUT_CONTAINER_DEEP_INTERNAL_HPP