Sprout/sprout/tuple/traits.hpp
2014-01-08 16:48:12 +09:00

107 lines
3.1 KiB
C++

/*=============================================================================
Copyright (c) 2011-2014 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_TUPLE_TRAITS_HPP
#define SPROUT_TUPLE_TRAITS_HPP
#include <sprout/config.hpp>
#include <sprout/index_tuple/metafunction.hpp>
#include <sprout/tuple/tuple.hpp>
#include <sprout/tuple/indexes.hpp>
#include <sprout/type/rebind_types.hpp>
#include <sprout/utility/forward.hpp>
namespace sprout {
namespace types {
//
// rebind_types
//
template<typename... Ts>
struct rebind_types<sprout::tuples::tuple<Ts...> > {
public:
template<typename... Types>
struct apply {
public:
typedef sprout::tuples::tuple<Types...> type;
};
};
} // namespace types
using sprout::types::rebind_types;
} // namespace sprout
namespace sprout {
namespace tuples {
//
// rebind_types
//
template<typename Tuple>
struct rebind_types
: public sprout::types::rebind_types<Tuple>
{};
//
// tuple_construct_traits
//
template<typename Tuple>
struct tuple_construct_traits;
namespace detail {
template<typename Tuple, typename IndexTuple>
struct default_copied;
template<typename Tuple, sprout::index_t... Indexes>
struct default_copied<Tuple, sprout::index_tuple<Indexes...> >
: public sprout::tuples::rebind_types<Tuple>::template apply<
typename std::decay<
typename sprout::tuples::tuple_element<Indexes, Tuple>::type
>::type...
>
{};
template<typename Tuple, typename... Args>
SPROUT_CONSTEXPR typename sprout::tuples::tuple_construct_traits<Tuple>::copied_type
default_make_tuple(Args&&... args) {
typedef typename sprout::tuples::tuple_construct_traits<Tuple>::copied_type copied_type;
return copied_type(sprout::forward<Args>(args)...);
}
} // namespace detail
template<typename Tuple>
struct tuple_construct_traits {
public:
typedef typename sprout::tuples::detail::default_copied<
Tuple,
typename sprout::tuple_indexes<Tuple>::type
>::type copied_type;
public:
template<typename Tup>
static SPROUT_CONSTEXPR copied_type deep_copy(Tup&& tup) {
return sprout::forward<Tup>(tup);
}
template<typename... Args>
static SPROUT_CONSTEXPR copied_type make(Args&&... args) {
return sprout::tuples::detail::default_make_tuple<Tuple>(sprout::forward<Args>(args)...);
}
template<typename Tup, typename... Args>
static SPROUT_CONSTEXPR copied_type remake(
Tup&&,
Args&&... args
)
{
return make(sprout::forward<Args>(args)...);
}
};
template<typename Tuple>
struct tuple_construct_traits<Tuple const>
: public sprout::tuples::tuple_construct_traits<Tuple>
{};
} // namespace tuples
using sprout::tuples::tuple_construct_traits;
} // namespace sprout
#endif // #ifndef SPROUT_TUPLE_TRAITS_HPP