mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
551 lines
17 KiB
C++
551 lines
17 KiB
C++
#ifndef SPROUT_TUPLE_TUPLE_HPP
|
|
#define SPROUT_TUPLE_TUPLE_HPP
|
|
|
|
#include <cstddef>
|
|
#include <utility>
|
|
#include <type_traits>
|
|
#include <tuple>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/utility/operation.hpp>
|
|
|
|
namespace sprout {
|
|
namespace tuples {
|
|
namespace detail {
|
|
template<std::size_t Index, typename Head, bool IsEmpty>
|
|
class head_base;
|
|
//!!!
|
|
// EBO disabled
|
|
// template<std::size_t Index, typename Head>
|
|
// class head_base<Index, Head, true>
|
|
// : public Head
|
|
// {
|
|
// public:
|
|
// static SPROUT_CONSTEXPR Head& head(head_base& t) SPROUT_NOEXCEPT {
|
|
// return t;
|
|
// }
|
|
// static SPROUT_CONSTEXPR Head const& head(head_base const& t) SPROUT_NOEXCEPT {
|
|
// return t;
|
|
// }
|
|
// public:
|
|
// SPROUT_CONSTEXPR head_base()
|
|
// : Head()
|
|
// {}
|
|
// SPROUT_CONSTEXPR head_base(Head const& v)
|
|
// : Head(v)
|
|
// {}
|
|
// template<typename UHead>
|
|
// SPROUT_CONSTEXPR head_base(UHead&& v)
|
|
// : Head(sprout::forward<UHead>(v))
|
|
// {}
|
|
// };
|
|
template<std::size_t Index, typename Head>
|
|
class head_base<Index, Head, true> {
|
|
public:
|
|
static SPROUT_CONSTEXPR Head& head(head_base& t) SPROUT_NOEXCEPT {
|
|
return t.head_;
|
|
}
|
|
static SPROUT_CONSTEXPR Head const& head(head_base const& t) SPROUT_NOEXCEPT {
|
|
return t.head_;
|
|
}
|
|
private:
|
|
Head head_;
|
|
public:
|
|
SPROUT_CONSTEXPR head_base()
|
|
: head_()
|
|
{}
|
|
SPROUT_CONSTEXPR head_base(Head const& v)
|
|
: head_(v)
|
|
{}
|
|
template<typename UHead>
|
|
SPROUT_CONSTEXPR head_base(UHead&& v)
|
|
: head_(sprout::forward<UHead>(v))
|
|
{}
|
|
};
|
|
template<std::size_t Index, typename Head>
|
|
class head_base<Index, Head, false> {
|
|
public:
|
|
static SPROUT_CONSTEXPR Head& head(head_base& t) SPROUT_NOEXCEPT {
|
|
return t.head_;
|
|
}
|
|
static SPROUT_CONSTEXPR Head const& head(head_base const& t) SPROUT_NOEXCEPT {
|
|
return t.head_;
|
|
}
|
|
private:
|
|
Head head_;
|
|
public:
|
|
SPROUT_CONSTEXPR head_base()
|
|
: head_()
|
|
{}
|
|
SPROUT_CONSTEXPR head_base(Head const& v)
|
|
: head_(v)
|
|
{}
|
|
template<typename UHead>
|
|
SPROUT_CONSTEXPR head_base(UHead&& v)
|
|
: head_(sprout::forward<UHead>(v))
|
|
{}
|
|
};
|
|
|
|
template<std::size_t Index, typename... Types>
|
|
class tuple_impl;
|
|
template<std::size_t Index>
|
|
class tuple_impl<Index> {
|
|
public:
|
|
template<std::size_t, typename...>
|
|
friend class sprout::tuples::detail::tuple_impl;
|
|
protected:
|
|
void swap(tuple_impl&) SPROUT_NOEXCEPT {}
|
|
public:
|
|
tuple_impl() = default;
|
|
template<typename... UTypes>
|
|
explicit SPROUT_CONSTEXPR tuple_impl(UTypes&&... args) SPROUT_NOEXCEPT {}
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl const&) = default;
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl&&) = default;
|
|
template<typename... UTypes>
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UTypes...> const& t) SPROUT_NOEXCEPT {}
|
|
template<typename... UTypes>
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UTypes...>&& t) SPROUT_NOEXCEPT {}
|
|
tuple_impl& operator=(tuple_impl const&) = default;
|
|
tuple_impl& operator=(tuple_impl&& t) = default;
|
|
template<typename... UTypes>
|
|
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UTypes...> const&) SPROUT_NOEXCEPT {
|
|
return *this;
|
|
}
|
|
template<typename... UTypes>
|
|
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UTypes...>&&) SPROUT_NOEXCEPT {
|
|
return *this;
|
|
}
|
|
};
|
|
template<std::size_t Index, typename Head, typename... Tail>
|
|
class tuple_impl<Index, Head, Tail...>
|
|
: public sprout::tuples::detail::tuple_impl<Index + 1, Tail...>
|
|
, private sprout::tuples::detail::head_base<Index, Head, std::is_empty<Head>::value>
|
|
{
|
|
public:
|
|
template<std::size_t, typename...>
|
|
friend class sprout::tuples::detail::tuple_impl;
|
|
public:
|
|
typedef sprout::tuples::detail::tuple_impl<Index + 1, Tail...> inherited_type;
|
|
typedef sprout::tuples::detail::head_base<Index, Head, std::is_empty<Head>::value> base_type;
|
|
public:
|
|
static SPROUT_CONSTEXPR Head& head(tuple_impl& t) SPROUT_NOEXCEPT {
|
|
return base_type::head(t);
|
|
}
|
|
static SPROUT_CONSTEXPR Head const& head(tuple_impl const& t) SPROUT_NOEXCEPT {
|
|
return base_type::head(t);
|
|
}
|
|
static SPROUT_CONSTEXPR inherited_type& tail(tuple_impl& t) SPROUT_NOEXCEPT {
|
|
return t;
|
|
}
|
|
static SPROUT_CONSTEXPR inherited_type const& tail(tuple_impl const& t) SPROUT_NOEXCEPT {
|
|
return t;
|
|
}
|
|
protected:
|
|
void swap(tuple_impl& t) SPROUT_NOEXCEPT_EXPR(
|
|
SPROUT_NOEXCEPT_EXPR(swap(std::declval<Head&>(), std::declval<Head&>()))
|
|
&& SPROUT_NOEXCEPT_EXPR(tail(t).swap(tail(t)))
|
|
)
|
|
{
|
|
using std::swap;
|
|
swap(head(*this), head(t));
|
|
inherited_type::swap(tail(t));
|
|
}
|
|
public:
|
|
SPROUT_CONSTEXPR tuple_impl()
|
|
: inherited_type()
|
|
, base_type()
|
|
{}
|
|
explicit SPROUT_CONSTEXPR tuple_impl(Head const& h, Tail const&... tail)
|
|
: inherited_type(tail...)
|
|
, base_type(h)
|
|
{}
|
|
template<typename UHead, typename... UTail>
|
|
explicit SPROUT_CONSTEXPR tuple_impl(UHead&& h, UTail&&... tail)
|
|
: inherited_type(sprout::forward<UTail>(tail)...)
|
|
, base_type(sprout::forward<UHead>(h))
|
|
{}
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl const&) = default;
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl&& t)
|
|
SPROUT_NOEXCEPT_EXPR(std::is_nothrow_move_constructible<Head>::value && std::is_nothrow_move_constructible<inherited_type>::value)
|
|
: inherited_type(sprout::move(tail(t)))
|
|
, base_type(sprout::forward<Head>(head(t)))
|
|
{}
|
|
template<typename... UTypes>
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UTypes...> const& t)
|
|
: inherited_type(sprout::tuples::detail::tuple_impl<Index, UTypes...>::tail(t))
|
|
, base_type(sprout::tuples::detail::tuple_impl<Index, UTypes...>::head(t))
|
|
{}
|
|
template<typename UHead, typename... UTail>
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UHead, UTail...>&& t)
|
|
: inherited_type(sprout::move(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::tail(t)))
|
|
, base_type(sprout::forward<UHead>(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::head(t)))
|
|
{}
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index> const& t)
|
|
: inherited_type()
|
|
, base_type()
|
|
{}
|
|
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index>&& t)
|
|
: inherited_type()
|
|
, base_type()
|
|
{}
|
|
tuple_impl& operator=(tuple_impl const& t) {
|
|
head(*this) = head(t);
|
|
tail(*this) = tail(t);
|
|
return *this;
|
|
}
|
|
tuple_impl& operator=(tuple_impl&& t)
|
|
SPROUT_NOEXCEPT_EXPR(std::is_nothrow_move_assignable<Head>::value && std::is_nothrow_move_assignable<inherited_type>::value)
|
|
{
|
|
head(*this) = sprout::forward<Head>(head(t));
|
|
tail(*this) = sprout::move(tail(t));
|
|
return *this;
|
|
}
|
|
template<typename... UTypes>
|
|
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UTypes...> const& t) {
|
|
head(*this) = sprout::tuples::detail::tuple_impl<Index, UTypes...>::head(t);
|
|
tail(*this) = sprout::tuples::detail::tuple_impl<Index, UTypes...>::tail(t);
|
|
return *this;
|
|
}
|
|
template<typename UHead, typename... UTail>
|
|
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>&& t) {
|
|
head(*this) = sprout::forward<UHead>(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::head(t));
|
|
tail(*this) = sprout::move(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::tail(t));
|
|
return *this;
|
|
}
|
|
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index> const& t) {
|
|
*this = sprout::move(tuple_impl());
|
|
return *this;
|
|
}
|
|
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index>&& t) {
|
|
*this = sprout::move(tuple_impl());
|
|
return *this;
|
|
}
|
|
};
|
|
|
|
template<bool Head, bool... Tail>
|
|
struct and_impl;
|
|
template<>
|
|
struct and_impl<true>
|
|
: public std::true_type
|
|
{};
|
|
template<>
|
|
struct and_impl<false>
|
|
: public std::false_type
|
|
{};
|
|
template<bool... Tail>
|
|
struct and_impl<true, Tail...>
|
|
: public std::integral_constant<bool, sprout::tuples::detail::and_impl<Tail...>::value>
|
|
{};
|
|
template<bool... Tail>
|
|
struct and_impl<false, Tail...>
|
|
: public std::false_type
|
|
{};
|
|
template<typename... Types>
|
|
struct and_
|
|
: public sprout::tuples::detail::and_impl<Types::value...>
|
|
{};
|
|
|
|
template<bool Head, bool... Tail>
|
|
struct or_impl;
|
|
template<>
|
|
struct or_impl<true>
|
|
: public std::true_type
|
|
{};
|
|
template<>
|
|
struct or_impl<false>
|
|
: public std::false_type
|
|
{};
|
|
template<bool... Tail>
|
|
struct or_impl<true, Tail...>
|
|
: public std::true_type
|
|
{};
|
|
template<bool... Tail>
|
|
struct or_impl<false, Tail...>
|
|
: public std::integral_constant<bool, sprout::tuples::detail::or_impl<Tail...>::value>
|
|
{};
|
|
template<typename... Types>
|
|
struct or_
|
|
: public sprout::tuples::detail::and_impl<Types::value...>
|
|
{};
|
|
} // namespace detail
|
|
|
|
template<typename... Types>
|
|
class tuple;
|
|
|
|
//
|
|
// is_tuple
|
|
//
|
|
template<typename T>
|
|
struct is_tuple
|
|
: public std::false_type
|
|
{};
|
|
template<typename T>
|
|
struct is_tuple<T const>
|
|
: public sprout::tuples::is_tuple<T>
|
|
{};
|
|
template<typename T>
|
|
struct is_tuple<T const volatile>
|
|
: public sprout::tuples::is_tuple<T>
|
|
{};
|
|
template<typename... Types>
|
|
struct is_tuple<sprout::tuples::tuple<Types...> >
|
|
: public std::true_type
|
|
{};
|
|
|
|
//
|
|
// tuple
|
|
//
|
|
template<typename... Types>
|
|
class tuple
|
|
: public sprout::tuples::detail::tuple_impl<0, Types...>
|
|
{
|
|
public:
|
|
typedef sprout::tuples::detail::tuple_impl<0, Types...> inherited_type;
|
|
public:
|
|
// tuple construction
|
|
SPROUT_CONSTEXPR tuple()
|
|
: inherited_type()
|
|
{}
|
|
explicit SPROUT_CONSTEXPR tuple(Types const&... elements)
|
|
: inherited_type(elements...)
|
|
{}
|
|
template<
|
|
typename U,
|
|
typename = typename std::enable_if<
|
|
!sprout::tuples::is_tuple<typename std::remove_reference<U>::type>::value
|
|
>::type
|
|
>
|
|
explicit SPROUT_CONSTEXPR tuple(U&& elem)
|
|
: inherited_type(sprout::forward<U>(elem))
|
|
{}
|
|
template<
|
|
typename U1,
|
|
typename U2,
|
|
typename... UTypes
|
|
>
|
|
explicit SPROUT_CONSTEXPR tuple(U1&& elem1, U2&& elem2, UTypes&&... elements)
|
|
: inherited_type(sprout::forward<U1>(elem1), sprout::forward<U2>(elem2), sprout::forward<UTypes>(elements)...)
|
|
{}
|
|
SPROUT_CONSTEXPR tuple(tuple const&) = default;
|
|
SPROUT_CONSTEXPR tuple(tuple&&) = default;
|
|
template<typename... UTypes>
|
|
SPROUT_CONSTEXPR tuple(sprout::tuples::tuple<UTypes...> const& t)
|
|
: inherited_type(static_cast<sprout::tuples::detail::tuple_impl<0, UTypes...> const&>(t))
|
|
{}
|
|
template<typename... UTypes>
|
|
SPROUT_CONSTEXPR tuple(sprout::tuples::tuple<UTypes...>&& t)
|
|
: inherited_type(static_cast<sprout::tuples::detail::tuple_impl<0, UTypes...>&&>(t))
|
|
{}
|
|
// tuple assignment
|
|
tuple& operator=(tuple const& rhs) {
|
|
static_cast<inherited_type&>(*this) = rhs;
|
|
return *this;
|
|
}
|
|
tuple& operator=(tuple&& rhs) SPROUT_NOEXCEPT_EXPR(std::is_nothrow_move_assignable<inherited_type>::value) {
|
|
static_cast<inherited_type&>(*this) = sprout::move(rhs);
|
|
return *this;
|
|
}
|
|
template<typename... UTypes>
|
|
tuple& operator=(sprout::tuples::tuple<UTypes...> const& rhs) {
|
|
static_cast<inherited_type&>(*this) = rhs;
|
|
return *this;
|
|
}
|
|
template<typename... UTypes>
|
|
tuple& operator=(sprout::tuples::tuple<UTypes...>&& rhs) {
|
|
static_cast<inherited_type&>(*this) = sprout::move(rhs);
|
|
return *this;
|
|
}
|
|
// tuple swap
|
|
void swap(tuple& other) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(inherited_type::swap(other))) {
|
|
inherited_type::swap(other);
|
|
}
|
|
};
|
|
template<>
|
|
class tuple<> {
|
|
public:
|
|
// tuple swap
|
|
void swap(tuple&) SPROUT_NOEXCEPT {}
|
|
};
|
|
|
|
//
|
|
// ignore_t
|
|
//
|
|
struct ignore_t {
|
|
template<typename T>
|
|
ignore_t const& operator=(T const&) const {
|
|
return *this;
|
|
}
|
|
};
|
|
//
|
|
// ignore
|
|
//
|
|
SPROUT_STATIC_CONSTEXPR ignore_t ignore{};
|
|
|
|
//
|
|
// make_tuple
|
|
//
|
|
template<typename... Types>
|
|
inline SPROUT_CONSTEXPR sprout::tuples::tuple<typename std::decay<Types>::type...> make_tuple(Types&&... args) {
|
|
return sprout::tuples::tuple<typename std::decay<Types>::type...>(sprout::forward<Types>(args)...);
|
|
}
|
|
//
|
|
// forward_as_tuple
|
|
//
|
|
template<typename... Types>
|
|
inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types&&...> forward_as_tuple(Types&&... args) SPROUT_NOEXCEPT {
|
|
return sprout::tuples::tuple<Types&&...>(sprout::forward<Types>(args)...);
|
|
}
|
|
//
|
|
// tie
|
|
//
|
|
template<typename... Types>
|
|
inline sprout::tuples::tuple<Types&...> tie(Types&... args) SPROUT_NOEXCEPT {
|
|
return sprout::tuples::tuple<Types&...>(args...);
|
|
}
|
|
|
|
//
|
|
// swap
|
|
//
|
|
template<typename... Types>
|
|
inline void swap(
|
|
sprout::tuples::tuple<Types...>& lhs,
|
|
sprout::tuples::tuple<Types...>& rhs
|
|
) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
|
|
{
|
|
lhs.swap(rhs);
|
|
}
|
|
|
|
namespace detail {
|
|
template<std::size_t I, typename T>
|
|
struct tuple_element_impl;
|
|
template<typename Head, typename... Tail>
|
|
struct tuple_element_impl<0, sprout::tuples::tuple<Head, Tail...> > {
|
|
public:
|
|
typedef Head type;
|
|
};
|
|
template<std::size_t I, typename Head, typename... Tail>
|
|
struct tuple_element_impl<I, sprout::tuples::tuple<Head, Tail...> >
|
|
: public sprout::tuples::detail::tuple_element_impl<I - 1, sprout::tuples::tuple<Tail...> >
|
|
{};
|
|
} // namespace detail
|
|
} // namespace tuples
|
|
|
|
using sprout::tuples::tuple;
|
|
using sprout::tuples::ignore;
|
|
using sprout::tuples::make_tuple;
|
|
using sprout::tuples::forward_as_tuple;
|
|
using sprout::tuples::tie;
|
|
using sprout::tuples::swap;
|
|
} // namespace sprout
|
|
|
|
namespace std {
|
|
//
|
|
// tuple_size
|
|
//
|
|
template<typename... Types>
|
|
struct tuple_size<sprout::tuples::tuple<Types...> >
|
|
: public std::integral_constant<std::size_t, sizeof...(Types)>
|
|
{};
|
|
|
|
//
|
|
// tuple_element
|
|
//
|
|
template<std::size_t I, typename... Types>
|
|
struct tuple_element<I, sprout::tuples::tuple<Types...> >
|
|
: public sprout::tuples::detail::tuple_element_impl<I, sprout::tuples::tuple<Types...> >
|
|
{};
|
|
} // namespace std
|
|
|
|
namespace sprout {
|
|
namespace tuples {
|
|
//
|
|
// tuple_size
|
|
//
|
|
template<typename T>
|
|
struct tuple_size
|
|
: public std::tuple_size<T>
|
|
{};
|
|
template<typename T>
|
|
struct tuple_size<T const>
|
|
: public sprout::tuples::tuple_size<T>
|
|
{};
|
|
template<typename T>
|
|
struct tuple_size<T volatile>
|
|
: public sprout::tuples::tuple_size<T>
|
|
{};
|
|
template<typename T>
|
|
struct tuple_size<T const volatile>
|
|
: public sprout::tuples::tuple_size<T>
|
|
{};
|
|
|
|
//
|
|
// tuple_element
|
|
//
|
|
template<std::size_t I, typename T>
|
|
struct tuple_element
|
|
: public std::tuple_element<I, T>
|
|
{};
|
|
template<std::size_t I, typename T>
|
|
struct tuple_element<I, T const>
|
|
: public sprout::tuples::tuple_element<I, T>
|
|
{};
|
|
template<std::size_t I, typename T>
|
|
struct tuple_element<I, T volatile>
|
|
: public sprout::tuples::tuple_element<I, T>
|
|
{};
|
|
template<std::size_t I, typename T>
|
|
struct tuple_element<I, T const volatile>
|
|
: public sprout::tuples::tuple_element<I, T>
|
|
{};
|
|
|
|
//
|
|
// get
|
|
//
|
|
template<std::size_t I, typename T>
|
|
SPROUT_CONSTEXPR auto
|
|
get(T&& t) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::get<I>(sprout::forward<T>(t))))
|
|
-> decltype(std::get<I>(sprout::forward<T>(t)))
|
|
{
|
|
return std::get<I>(sprout::forward<T>(t));
|
|
}
|
|
//
|
|
// get
|
|
//
|
|
namespace detail {
|
|
template<std::size_t I, typename Head, typename... Tail>
|
|
SPROUT_CONSTEXPR typename std::add_lvalue_reference<Head>::type
|
|
get_helper(sprout::tuples::detail::tuple_impl<I, Head, Tail...>& t) SPROUT_NOEXCEPT {
|
|
return sprout::tuples::detail::tuple_impl<I, Head, Tail...>::head(t);
|
|
}
|
|
template<std::size_t I, typename Head, typename... Tail>
|
|
SPROUT_CONSTEXPR typename std::add_lvalue_reference<typename std::add_const<Head>::type>::type
|
|
get_helper(sprout::tuples::detail::tuple_impl<I, Head, Tail...> const& t) SPROUT_NOEXCEPT {
|
|
return sprout::tuples::detail::tuple_impl<I, Head, Tail...>::head(t);
|
|
}
|
|
} // namespace detail
|
|
template<std::size_t I, typename... Types>
|
|
SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type&
|
|
get(sprout::tuples::tuple<Types...>& t) SPROUT_NOEXCEPT {
|
|
return sprout::tuples::detail::get_helper<I>(t);
|
|
}
|
|
template<std::size_t I, typename... Types>
|
|
SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type&&
|
|
get(sprout::tuples::tuple<Types...>&& t) SPROUT_NOEXCEPT {
|
|
return sprout::forward<typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type&&>(
|
|
sprout::tuples::get<I>(t)
|
|
);
|
|
}
|
|
template<std::size_t I, typename... Types>
|
|
SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type const&
|
|
get(sprout::tuples::tuple<Types...> const& t) SPROUT_NOEXCEPT {
|
|
return sprout::tuples::detail::get_helper<I>(t);
|
|
}
|
|
} // namespace tuples
|
|
|
|
using sprout::tuples::tuple_size;
|
|
using sprout::tuples::tuple_element;
|
|
using sprout::tuples::get;
|
|
} // namespace sprout
|
|
|
|
#include <sprout/tuple/tuple_comparison.hpp>
|
|
|
|
#endif // #ifndef SPROUT_TUPLE_TUPLE_HPP
|