mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-25 21:35:41 +00:00
127 lines
3.4 KiB
C++
127 lines
3.4 KiB
C++
|
#ifndef SPROUT_UTILITY_PAIR_PAIR_HPP
|
||
|
|
#define SPROUT_UTILITY_PAIR_PAIR_HPP
|
||
|
|
|
||
|
|
#include <utility>
|
||
|
|
#include <type_traits>
|
||
|
|
#include <sprout/config.hpp>
|
||
|
|
#include <sprout/index_tuple.hpp>
|
||
|
|
#include <sprout/utility/forward.hpp>
|
||
|
|
#include <sprout/utility/swap.hpp>
|
||
|
|
#include <sprout/tuple/tuple.hpp>
|
||
|
|
|
||
|
|
namespace sprout {
|
||
|
|
// Copyright (C) 2011 RiSK (sscrisk)
|
||
|
|
|
||
|
|
//
|
||
|
|
// pair
|
||
|
|
//
|
||
|
|
template <typename T1, typename T2>
|
||
|
|
struct pair {
|
||
|
|
public:
|
||
|
|
typedef T1 first_type;
|
||
|
|
typedef T2 second_type;
|
||
|
|
public:
|
||
|
|
T1 first;
|
||
|
|
T2 second;
|
||
|
|
private:
|
||
|
|
template <typename... Args1, typename... Args2, sprout::index_t... Indexes1, sprout::index_t... Indexes2>
|
||
|
|
SPROUT_CONSTEXPR pair(
|
||
|
|
sprout::tuples::tuple<Args1...> first_args,
|
||
|
|
sprout::tuples::tuple<Args2...> second_args,
|
||
|
|
sprout::index_tuple<Indexes1...>,
|
||
|
|
sprout::index_tuple<Indexes2...>
|
||
|
|
)
|
||
|
|
: first(sprout::tuples::get<Indexes1>(first_args)...)
|
||
|
|
, second(sprout::tuples::get<Indexes2>(second_args)...)
|
||
|
|
{}
|
||
|
|
public:
|
||
|
|
pair(pair const&) = default;
|
||
|
|
pair(pair&&) = default;
|
||
|
|
SPROUT_CONSTEXPR pair()
|
||
|
|
: first()
|
||
|
|
, second()
|
||
|
|
{}
|
||
|
|
SPROUT_CONSTEXPR pair(T1 const& x, T2 const& y)
|
||
|
|
: first(x)
|
||
|
|
, second(y)
|
||
|
|
{}
|
||
|
|
template<typename U, typename V>
|
||
|
|
SPROUT_CONSTEXPR pair(U&& x, V&& y)
|
||
|
|
: first(sprout::forward<U>(x))
|
||
|
|
, second(sprout::forward<V>(y))
|
||
|
|
{}
|
||
|
|
template<typename U, typename V>
|
||
|
|
SPROUT_CONSTEXPR pair(sprout::pair<U, V> const& p)
|
||
|
|
: first(p.first)
|
||
|
|
, second(p.second)
|
||
|
|
{}
|
||
|
|
template<typename U, typename V>
|
||
|
|
SPROUT_CONSTEXPR pair(sprout::pair<U, V>&& p)
|
||
|
|
: first(sprout::forward<U>(p.first))
|
||
|
|
, second(sprout::forward<V>(p.second))
|
||
|
|
{}
|
||
|
|
#if SPROUT_USE_DELEGATING_CONSTRUCTORS
|
||
|
|
template <typename... Args1, typename... Args2>
|
||
|
|
SPROUT_CONSTEXPR pair(
|
||
|
|
sprout::tuples::tuple<Args1...> first_args,
|
||
|
|
sprout::tuples::tuple<Args2...> second_args
|
||
|
|
)
|
||
|
|
: pair(
|
||
|
|
first_args,
|
||
|
|
second_args,
|
||
|
|
sprout::index_range<0, sizeof...(Args1)>::make(),
|
||
|
|
sprout::index_range<0, sizeof...(Args2)>::make()
|
||
|
|
)
|
||
|
|
{}
|
||
|
|
#else // #if SPROUT_USE_DELEGATING_CONSTRUCTORS
|
||
|
|
template <typename... Args1, typename... Args2>
|
||
|
|
SPROUT_CONSTEXPR pair(
|
||
|
|
sprout::tuples::tuple<Args1...> first_args,
|
||
|
|
sprout::tuples::tuple<Args2...> second_args
|
||
|
|
);
|
||
|
|
#endif // #if SPROUT_USE_DELEGATING_CONSTRUCTORS
|
||
|
|
pair& operator=(pair const& p) = default;
|
||
|
|
template<typename U, typename V>
|
||
|
|
pair& operator=(sprout::pair<U, V> const& p) {
|
||
|
|
first = p.first;
|
||
|
|
second = p.second;
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
pair& operator=(pair&& p)
|
||
|
|
SPROUT_NOEXCEPT_EXPR(std::is_nothrow_move_assignable<T1>::value && std::is_nothrow_move_assignable<T2>::value)
|
||
|
|
{
|
||
|
|
first = sprout::forward<T1>(p.first);
|
||
|
|
second = std::forward<T2>(p.second);
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
template<typename U, typename V>
|
||
|
|
pair& operator=(sprout::pair<U, V>&& p) {
|
||
|
|
first = std::forward<U>(p.first);
|
||
|
|
second = std::forward<V>(p.second);
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
void swap(pair& p)
|
||
|
|
SPROUT_NOEXCEPT_EXPR(
|
||
|
|
SPROUT_NOEXCEPT_EXPR(swap(first, p.first))
|
||
|
|
&& SPROUT_NOEXCEPT_EXPR(swap(second, p.second))
|
||
|
|
)
|
||
|
|
{
|
||
|
|
sprout::swap(first, p.first);
|
||
|
|
sprout::swap(second, p.second);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
//
|
||
|
|
// swap
|
||
|
|
//
|
||
|
|
template<class T1, class T2>
|
||
|
|
inline void
|
||
|
|
swap(sprout::pair<T1, T2>& lhs, sprout::pair<T1, T2>& rhs)
|
||
|
|
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
|
||
|
|
{
|
||
|
|
lhs.swap(rhs);
|
||
|
|
}
|
||
|
|
} // namespace sprout
|
||
|
|
|
||
|
|
#endif // #ifndef SPROUT_UTILITY_PAIR_PAIR_HPP
|