| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP_TUPLE |
| #define _LIBCPP_TUPLE |
| |
| // clang-format off |
| |
| /* |
| tuple synopsis |
| |
| namespace std |
| { |
| |
| template <class... T> |
| class tuple { |
| public: |
| explicit(see-below) constexpr tuple(); |
| explicit(see-below) tuple(const T&...); // constexpr in C++14 |
| template <class... U> |
| explicit(see-below) tuple(U&&...); // constexpr in C++14 |
| tuple(const tuple&) = default; |
| tuple(tuple&&) = default; |
| |
| template<class... UTypes> |
| constexpr explicit(see-below) tuple(tuple<UTypes...>&); // C++23 |
| template <class... U> |
| explicit(see-below) tuple(const tuple<U...>&); // constexpr in C++14 |
| template <class... U> |
| explicit(see-below) tuple(tuple<U...>&&); // constexpr in C++14 |
| template<class... UTypes> |
| constexpr explicit(see-below) tuple(const tuple<UTypes...>&&); // C++23 |
| |
| template<class U1, class U2> |
| constexpr explicit(see-below) tuple(pair<U1, U2>&); // iff sizeof...(Types) == 2 // C++23 |
| template <class U1, class U2> |
| explicit(see-below) tuple(const pair<U1, U2>&); // iff sizeof...(T) == 2 // constexpr in C++14 |
| template <class U1, class U2> |
| explicit(see-below) tuple(pair<U1, U2>&&); // iff sizeof...(T) == 2 // constexpr in C++14 |
| template<class U1, class U2> |
| constexpr explicit(see-below) tuple(const pair<U1, U2>&&); // iff sizeof...(Types) == 2 // C++23 |
| |
| // allocator-extended constructors |
| template <class Alloc> |
| tuple(allocator_arg_t, const Alloc& a); |
| template <class Alloc> |
| explicit(see-below) tuple(allocator_arg_t, const Alloc& a, const T&...); // constexpr in C++20 |
| template <class Alloc, class... U> |
| explicit(see-below) tuple(allocator_arg_t, const Alloc& a, U&&...); // constexpr in C++20 |
| template <class Alloc> |
| tuple(allocator_arg_t, const Alloc& a, const tuple&); // constexpr in C++20 |
| template <class Alloc> |
| tuple(allocator_arg_t, const Alloc& a, tuple&&); // constexpr in C++20 |
| template<class Alloc, class... UTypes> |
| constexpr explicit(see-below) |
| tuple(allocator_arg_t, const Alloc& a, tuple<UTypes...>&); // C++23 |
| template <class Alloc, class... U> |
| explicit(see-below) tuple(allocator_arg_t, const Alloc& a, const tuple<U...>&); // constexpr in C++20 |
| template <class Alloc, class... U> |
| explicit(see-below) tuple(allocator_arg_t, const Alloc& a, tuple<U...>&&); // constexpr in C++20 |
| template<class Alloc, class... UTypes> |
| constexpr explicit(see-below) |
| tuple(allocator_arg_t, const Alloc& a, const tuple<UTypes...>&&); // C++23 |
| template<class Alloc, class U1, class U2> |
| constexpr explicit(see-below) |
| tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&); // C++23 |
| template <class Alloc, class U1, class U2> |
| explicit(see-below) tuple(allocator_arg_t, const Alloc& a, const pair<U1, U2>&); // constexpr in C++20 |
| template <class Alloc, class U1, class U2> |
| explicit(see-below) tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&&); // constexpr in C++20 |
| template<class Alloc, class U1, class U2> |
| constexpr explicit(see-below) |
| tuple(allocator_arg_t, const Alloc& a, const pair<U1, U2>&&); // C++23 |
| |
| tuple& operator=(const tuple&); // constexpr in C++20 |
| constexpr const tuple& operator=(const tuple&) const; // C++23 |
| tuple& operator=(tuple&&) noexcept(is_nothrow_move_assignable_v<T> && ...); // constexpr in C++20 |
| constexpr const tuple& operator=(tuple&&) const; // C++23 |
| template <class... U> |
| tuple& operator=(const tuple<U...>&); // constexpr in C++20 |
| template<class... UTypes> |
| constexpr const tuple& operator=(const tuple<UTypes...>&) const; // C++23 |
| template <class... U> |
| tuple& operator=(tuple<U...>&&); // constexpr in C++20 |
| template<class... UTypes> |
| constexpr const tuple& operator=(tuple<UTypes...>&&) const; // C++23 |
| template <class U1, class U2> |
| tuple& operator=(const pair<U1, U2>&); // iff sizeof...(T) == 2 // constexpr in C++20 |
| template<class U1, class U2> |
| constexpr const tuple& operator=(const pair<U1, U2>&) const; // iff sizeof...(Types) == 2 // C++23 |
| template <class U1, class U2> |
| tuple& operator=(pair<U1, U2>&&); // iff sizeof...(T) == 2 // constexpr in C++20 |
| template<class U1, class U2> |
| constexpr const tuple& operator=(pair<U1, U2>&&) const; // iff sizeof...(Types) == 2 // C++23 |
| |
| template<class U, size_t N> |
| tuple& operator=(array<U, N> const&) // iff sizeof...(T) == N, EXTENSION |
| template<class U, size_t N> |
| tuple& operator=(array<U, N>&&) // iff sizeof...(T) == N, EXTENSION |
| |
| void swap(tuple&) noexcept(AND(swap(declval<T&>(), declval<T&>())...)); // constexpr in C++20 |
| constexpr void swap(const tuple&) const noexcept(see-below); // C++23 |
| }; |
| |
| |
| template<class... TTypes, class... UTypes, template<class> class TQual, template<class> class UQual> // since C++23 |
| requires requires { typename tuple<common_reference_t<TQual<TTypes>, UQual<UTypes>>...>; } |
| struct basic_common_reference<tuple<TTypes...>, tuple<UTypes...>, TQual, UQual> { |
| using type = tuple<common_reference_t<TQual<TTypes>, UQual<UTypes>>...>; |
| }; |
| |
| template<class... TTypes, class... UTypes> // since C++23 |
| requires requires { typename tuple<common_type_t<TTypes, UTypes>...>; } |
| struct common_type<tuple<TTypes...>, tuple<UTypes...>> { |
| using type = tuple<common_type_t<TTypes, UTypes>...>; |
| }; |
| |
| template <class ...T> |
| tuple(T...) -> tuple<T...>; // since C++17 |
| template <class T1, class T2> |
| tuple(pair<T1, T2>) -> tuple<T1, T2>; // since C++17 |
| template <class Alloc, class ...T> |
| tuple(allocator_arg_t, Alloc, T...) -> tuple<T...>; // since C++17 |
| template <class Alloc, class T1, class T2> |
| tuple(allocator_arg_t, Alloc, pair<T1, T2>) -> tuple<T1, T2>; // since C++17 |
| template <class Alloc, class ...T> |
| tuple(allocator_arg_t, Alloc, tuple<T...>) -> tuple<T...>; // since C++17 |
| |
| inline constexpr unspecified ignore; |
| |
| template <class... T> tuple<V...> make_tuple(T&&...); // constexpr in C++14 |
| template <class... T> tuple<ATypes...> forward_as_tuple(T&&...) noexcept; // constexpr in C++14 |
| template <class... T> tuple<T&...> tie(T&...) noexcept; // constexpr in C++14 |
| template <class... Tuples> tuple<CTypes...> tuple_cat(Tuples&&... tpls); // constexpr in C++14 |
| |
| // [tuple.apply], calling a function with a tuple of arguments: |
| template <class F, class Tuple> |
| constexpr decltype(auto) apply(F&& f, Tuple&& t) noexcept(see below); // C++17 noexcept since C++23 |
| template <class T, class Tuple> |
| constexpr T make_from_tuple(Tuple&& t); // C++17 |
| |
| // 20.4.1.4, tuple helper classes: |
| template <class T> struct tuple_size; // undefined |
| template <class... T> struct tuple_size<tuple<T...>>; |
| template <class T> |
| inline constexpr size_t tuple_size_v = tuple_size<T>::value; // C++17 |
| template <size_t I, class T> struct tuple_element; // undefined |
| template <size_t I, class... T> struct tuple_element<I, tuple<T...>>; |
| template <size_t I, class T> |
| using tuple_element_t = typename tuple_element <I, T>::type; // C++14 |
| |
| // 20.4.1.5, element access: |
| template <size_t I, class... T> |
| typename tuple_element<I, tuple<T...>>::type& |
| get(tuple<T...>&) noexcept; // constexpr in C++14 |
| template <size_t I, class... T> |
| const typename tuple_element<I, tuple<T...>>::type& |
| get(const tuple<T...>&) noexcept; // constexpr in C++14 |
| template <size_t I, class... T> |
| typename tuple_element<I, tuple<T...>>::type&& |
| get(tuple<T...>&&) noexcept; // constexpr in C++14 |
| template <size_t I, class... T> |
| const typename tuple_element<I, tuple<T...>>::type&& |
| get(const tuple<T...>&&) noexcept; // constexpr in C++14 |
| |
| template <class T1, class... T> |
| constexpr T1& get(tuple<T...>&) noexcept; // C++14 |
| template <class T1, class... T> |
| constexpr const T1& get(const tuple<T...>&) noexcept; // C++14 |
| template <class T1, class... T> |
| constexpr T1&& get(tuple<T...>&&) noexcept; // C++14 |
| template <class T1, class... T> |
| constexpr const T1&& get(const tuple<T...>&&) noexcept; // C++14 |
| |
| // 20.4.1.6, relational operators: |
| template<class... T, class... U> bool operator==(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14 |
| template<class... T, class... U> bool operator<(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14, removed in C++20 |
| template<class... T, class... U> bool operator!=(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14, removed in C++20 |
| template<class... T, class... U> bool operator>(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14, removed in C++20 |
| template<class... T, class... U> bool operator<=(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14, removed in C++20 |
| template<class... T, class... U> bool operator>=(const tuple<T...>&, const tuple<U...>&); // constexpr in C++14, removed in C++20 |
| template<class... T, class... U> |
| constexpr common_comparison_category_t<synth-three-way-result<T, U>...> |
| operator<=>(const tuple<T...>&, const tuple<U...>&); // since C++20 |
| |
| template <class... Types, class Alloc> |
| struct uses_allocator<tuple<Types...>, Alloc>; |
| |
| template <class... Types> |
| void |
| swap(tuple<Types...>& x, tuple<Types...>& y) noexcept(noexcept(x.swap(y))); |
| |
| template <class... Types> |
| constexpr void swap(const tuple<Types...>& x, const tuple<Types...>& y) noexcept(see-below); // C++23 |
| |
| } // std |
| |
| */ |
| |
| // clang-format on |
| |
| #include <__compare/common_comparison_category.h> |
| #include <__compare/synth_three_way.h> |
| #include <__config> |
| #include <__functional/invoke.h> |
| #include <__fwd/array.h> |
| #include <__fwd/pair.h> |
| #include <__fwd/tuple.h> |
| #include <__memory/allocator_arg_t.h> |
| #include <__memory/uses_allocator.h> |
| #include <__tuple/find_index.h> |
| #include <__tuple/make_tuple_types.h> |
| #include <__tuple/sfinae_helpers.h> |
| #include <__tuple/tuple_element.h> |
| #include <__tuple/tuple_indices.h> |
| #include <__tuple/tuple_like_ext.h> |
| #include <__tuple/tuple_size.h> |
| #include <__tuple/tuple_types.h> |
| #include <__type_traits/apply_cv.h> |
| #include <__type_traits/common_reference.h> |
| #include <__type_traits/common_type.h> |
| #include <__type_traits/conditional.h> |
| #include <__type_traits/conjunction.h> |
| #include <__type_traits/copy_cvref.h> |
| #include <__type_traits/disjunction.h> |
| #include <__type_traits/is_arithmetic.h> |
| #include <__type_traits/is_assignable.h> |
| #include <__type_traits/is_constructible.h> |
| #include <__type_traits/is_convertible.h> |
| #include <__type_traits/is_empty.h> |
| #include <__type_traits/is_final.h> |
| #include <__type_traits/is_implicitly_default_constructible.h> |
| #include <__type_traits/is_nothrow_assignable.h> |
| #include <__type_traits/is_nothrow_constructible.h> |
| #include <__type_traits/is_reference.h> |
| #include <__type_traits/is_same.h> |
| #include <__type_traits/is_swappable.h> |
| #include <__type_traits/lazy.h> |
| #include <__type_traits/maybe_const.h> |
| #include <__type_traits/nat.h> |
| #include <__type_traits/negation.h> |
| #include <__type_traits/remove_cvref.h> |
| #include <__type_traits/remove_reference.h> |
| #include <__type_traits/unwrap_ref.h> |
| #include <__utility/forward.h> |
| #include <__utility/integer_sequence.h> |
| #include <__utility/move.h> |
| #include <__utility/piecewise_construct.h> |
| #include <__utility/swap.h> |
| #include <cstddef> |
| #include <version> |
| |
| // standard-mandated includes |
| |
| // [tuple.syn] |
| #include <compare> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #ifndef _LIBCPP_CXX03_LANG |
| |
| // __tuple_leaf |
| |
| template <size_t _Ip, class _Hp, bool = is_empty<_Hp>::value && !__libcpp_is_final<_Hp>::value > |
| class __tuple_leaf; |
| |
| template <size_t _Ip, class _Hp, bool _Ep> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void |
| swap(__tuple_leaf<_Ip, _Hp, _Ep>& __x, __tuple_leaf<_Ip, _Hp, _Ep>& __y) |
| _NOEXCEPT_(__is_nothrow_swappable<_Hp>::value) { |
| swap(__x.get(), __y.get()); |
| } |
| |
| template <size_t _Ip, class _Hp, bool _Ep> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void |
| swap(const __tuple_leaf<_Ip, _Hp, _Ep>& __x, const __tuple_leaf<_Ip, _Hp, _Ep>& __y) |
| _NOEXCEPT_(__is_nothrow_swappable<const _Hp>::value) { |
| swap(__x.get(), __y.get()); |
| } |
| |
| template <size_t _Ip, class _Hp, bool> |
| class __tuple_leaf { |
| _Hp __value_; |
| |
| template <class _Tp> |
| static _LIBCPP_HIDE_FROM_ABI constexpr bool __can_bind_reference() { |
| # if __has_keyword(__reference_binds_to_temporary) |
| return !__reference_binds_to_temporary(_Hp, _Tp); |
| # else |
| return true; |
| # endif |
| } |
| |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 __tuple_leaf& operator=(const __tuple_leaf&); |
| |
| public: |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf() _NOEXCEPT_(is_nothrow_default_constructible<_Hp>::value) : __value_() { |
| static_assert(!is_reference<_Hp>::value, "Attempted to default construct a reference element in a tuple"); |
| } |
| |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf(integral_constant<int, 0>, const _Alloc&) : __value_() { |
| static_assert(!is_reference<_Hp>::value, "Attempted to default construct a reference element in a tuple"); |
| } |
| |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a) |
| : __value_(allocator_arg_t(), __a) { |
| static_assert(!is_reference<_Hp>::value, "Attempted to default construct a reference element in a tuple"); |
| } |
| |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a) : __value_(__a) { |
| static_assert(!is_reference<_Hp>::value, "Attempted to default construct a reference element in a tuple"); |
| } |
| |
| template <class _Tp, |
| __enable_if_t<_And<_IsNotSame<__remove_cvref_t<_Tp>, __tuple_leaf>, is_constructible<_Hp, _Tp> >::value, |
| int> = 0> |
| _LIBCPP_HIDE_FROM_ABI |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __tuple_leaf(_Tp&& __t) _NOEXCEPT_(is_nothrow_constructible<_Hp, _Tp>::value) |
| : __value_(std::forward<_Tp>(__t)) { |
| static_assert(__can_bind_reference<_Tp&&>(), |
| "Attempted construction of reference element binds to a temporary whose lifetime has ended"); |
| } |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __tuple_leaf( |
| integral_constant<int, 0>, const _Alloc&, _Tp&& __t) |
| : __value_(std::forward<_Tp>(__t)) { |
| static_assert(__can_bind_reference<_Tp&&>(), |
| "Attempted construction of reference element binds to a temporary whose lifetime has ended"); |
| } |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __tuple_leaf( |
| integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t) |
| : __value_(allocator_arg_t(), __a, std::forward<_Tp>(__t)) { |
| static_assert(!is_reference<_Hp>::value, "Attempted to uses-allocator construct a reference element in a tuple"); |
| } |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __tuple_leaf( |
| integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t) |
| : __value_(std::forward<_Tp>(__t), __a) { |
| static_assert(!is_reference<_Hp>::value, "Attempted to uses-allocator construct a reference element in a tuple"); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI __tuple_leaf(const __tuple_leaf& __t) = default; |
| _LIBCPP_HIDE_FROM_ABI __tuple_leaf(__tuple_leaf&& __t) = default; |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int swap(__tuple_leaf& __t) |
| _NOEXCEPT_(__is_nothrow_swappable<__tuple_leaf>::value) { |
| std::swap(*this, __t); |
| return 0; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int swap(const __tuple_leaf& __t) const |
| _NOEXCEPT_(__is_nothrow_swappable<const __tuple_leaf>::value) { |
| std::swap(*this, __t); |
| return 0; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Hp& get() _NOEXCEPT { return __value_; } |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const _Hp& get() const _NOEXCEPT { return __value_; } |
| }; |
| |
| template <size_t _Ip, class _Hp> |
| class __tuple_leaf<_Ip, _Hp, true> : private _Hp { |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 __tuple_leaf& operator=(const __tuple_leaf&); |
| |
| public: |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf() _NOEXCEPT_(is_nothrow_default_constructible<_Hp>::value) {} |
| |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf(integral_constant<int, 0>, const _Alloc&) {} |
| |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a) |
| : _Hp(allocator_arg_t(), __a) {} |
| |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a) : _Hp(__a) {} |
| |
| template <class _Tp, |
| __enable_if_t< _And< _IsNotSame<__remove_cvref_t<_Tp>, __tuple_leaf>, is_constructible<_Hp, _Tp> >::value, |
| int> = 0> |
| _LIBCPP_HIDE_FROM_ABI |
| _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __tuple_leaf(_Tp&& __t) _NOEXCEPT_(is_nothrow_constructible<_Hp, _Tp>::value) |
| : _Hp(std::forward<_Tp>(__t)) {} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit __tuple_leaf(integral_constant<int, 0>, const _Alloc&, _Tp&& __t) |
| : _Hp(std::forward<_Tp>(__t)) {} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t) |
| : _Hp(allocator_arg_t(), __a, std::forward<_Tp>(__t)) {} |
| |
| template <class _Tp, class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t) |
| : _Hp(std::forward<_Tp>(__t), __a) {} |
| |
| __tuple_leaf(__tuple_leaf const&) = default; |
| __tuple_leaf(__tuple_leaf&&) = default; |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int swap(__tuple_leaf& __t) |
| _NOEXCEPT_(__is_nothrow_swappable<__tuple_leaf>::value) { |
| std::swap(*this, __t); |
| return 0; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 int swap(const __tuple_leaf& __rhs) const |
| _NOEXCEPT_(__is_nothrow_swappable<const __tuple_leaf>::value) { |
| std::swap(*this, __rhs); |
| return 0; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Hp& get() _NOEXCEPT { return static_cast<_Hp&>(*this); } |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const _Hp& get() const _NOEXCEPT { |
| return static_cast<const _Hp&>(*this); |
| } |
| }; |
| |
| template <class... _Tp> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void __swallow(_Tp&&...) _NOEXCEPT {} |
| |
| template <class _Tp> |
| struct __all_default_constructible; |
| |
| template <class... _Tp> |
| struct __all_default_constructible<__tuple_types<_Tp...>> : __all<is_default_constructible<_Tp>::value...> {}; |
| |
| // __tuple_impl |
| |
| template <class _Indx, class... _Tp> |
| struct __tuple_impl; |
| |
| template <size_t... _Indx, class... _Tp> |
| struct _LIBCPP_DECLSPEC_EMPTY_BASES __tuple_impl<__tuple_indices<_Indx...>, _Tp...> |
| : public __tuple_leaf<_Indx, _Tp>... { |
| _LIBCPP_HIDE_FROM_ABI constexpr __tuple_impl() |
| _NOEXCEPT_(__all<is_nothrow_default_constructible<_Tp>::value...>::value) {} |
| |
| template <size_t... _Uf, class... _Tf, size_t... _Ul, class... _Tl, class... _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __tuple_impl( |
| __tuple_indices<_Uf...>, __tuple_types<_Tf...>, __tuple_indices<_Ul...>, __tuple_types<_Tl...>, _Up&&... __u) |
| _NOEXCEPT_(__all<is_nothrow_constructible<_Tf, _Up>::value...>::value&& |
| __all<is_nothrow_default_constructible<_Tl>::value...>::value) |
| : __tuple_leaf<_Uf, _Tf>(std::forward<_Up>(__u))..., __tuple_leaf<_Ul, _Tl>()... {} |
| |
| template <class _Alloc, size_t... _Uf, class... _Tf, size_t... _Ul, class... _Tl, class... _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit __tuple_impl( |
| allocator_arg_t, |
| const _Alloc& __a, |
| __tuple_indices<_Uf...>, |
| __tuple_types<_Tf...>, |
| __tuple_indices<_Ul...>, |
| __tuple_types<_Tl...>, |
| _Up&&... __u) |
| : __tuple_leaf<_Uf, _Tf>(__uses_alloc_ctor<_Tf, _Alloc, _Up>(), __a, std::forward<_Up>(__u))..., |
| __tuple_leaf<_Ul, _Tl>(__uses_alloc_ctor<_Tl, _Alloc>(), __a)... {} |
| |
| template <class _Tuple, __enable_if_t<__tuple_constructible<_Tuple, tuple<_Tp...> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __tuple_impl(_Tuple&& __t) _NOEXCEPT_( |
| (__all<is_nothrow_constructible< |
| _Tp, |
| typename tuple_element<_Indx, typename __make_tuple_types<_Tuple>::type>::type>::value...>::value)) |
| : __tuple_leaf<_Indx, _Tp>( |
| std::forward<typename tuple_element<_Indx, typename __make_tuple_types<_Tuple>::type>::type>( |
| std::get<_Indx>(__t)))... {} |
| |
| template <class _Alloc, class _Tuple, __enable_if_t<__tuple_constructible<_Tuple, tuple<_Tp...> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 __tuple_impl(allocator_arg_t, const _Alloc& __a, _Tuple&& __t) |
| : __tuple_leaf<_Indx, _Tp>( |
| __uses_alloc_ctor<_Tp, |
| _Alloc, |
| typename tuple_element<_Indx, typename __make_tuple_types<_Tuple>::type>::type>(), |
| __a, |
| std::forward<typename tuple_element<_Indx, typename __make_tuple_types<_Tuple>::type>::type>( |
| std::get<_Indx>(__t)))... {} |
| |
| __tuple_impl(const __tuple_impl&) = default; |
| __tuple_impl(__tuple_impl&&) = default; |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void swap(__tuple_impl& __t) |
| _NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value) { |
| std::__swallow(__tuple_leaf<_Indx, _Tp>::swap(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t))...); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void swap(const __tuple_impl& __t) const |
| _NOEXCEPT_(__all<__is_nothrow_swappable<const _Tp>::value...>::value) { |
| std::__swallow(__tuple_leaf<_Indx, _Tp>::swap(static_cast<const __tuple_leaf<_Indx, _Tp>&>(__t))...); |
| } |
| }; |
| |
| template <class _Dest, class _Source, size_t... _Np> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void |
| __memberwise_copy_assign(_Dest& __dest, _Source const& __source, __tuple_indices<_Np...>) { |
| std::__swallow(((std::get<_Np>(__dest) = std::get<_Np>(__source)), void(), 0)...); |
| } |
| |
| template <class _Dest, class _Source, class... _Up, size_t... _Np> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 void |
| __memberwise_forward_assign(_Dest& __dest, _Source&& __source, __tuple_types<_Up...>, __tuple_indices<_Np...>) { |
| std::__swallow(((std::get<_Np>(__dest) = std::forward<_Up>(std::get<_Np>(__source))), void(), 0)...); |
| } |
| |
| template <class... _Tp> |
| class _LIBCPP_TEMPLATE_VIS tuple { |
| typedef __tuple_impl<typename __make_tuple_indices<sizeof...(_Tp)>::type, _Tp...> _BaseT; |
| |
| _BaseT __base_; |
| |
| template <size_t _Jp, class... _Up> |
| friend _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Jp, tuple<_Up...> >::type& get(tuple<_Up...>&) _NOEXCEPT; |
| template <size_t _Jp, class... _Up> |
| friend _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Jp, tuple<_Up...> >::type& |
| get(const tuple<_Up...>&) _NOEXCEPT; |
| template <size_t _Jp, class... _Up> |
| friend _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Jp, tuple<_Up...> >::type&& |
| get(tuple<_Up...>&&) _NOEXCEPT; |
| template <size_t _Jp, class... _Up> |
| friend _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Jp, tuple<_Up...> >::type&& |
| get(const tuple<_Up...>&&) _NOEXCEPT; |
| |
| public: |
| // [tuple.cnstr] |
| |
| // tuple() constructors (including allocator_arg_t variants) |
| template <template <class...> class _IsImpDefault = __is_implicitly_default_constructible, |
| template <class...> class _IsDefault = is_default_constructible, |
| __enable_if_t< _And< _IsDefault<_Tp>... >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR explicit(_Not<_Lazy<_And, _IsImpDefault<_Tp>...> >::value) tuple() |
| _NOEXCEPT_(_And<is_nothrow_default_constructible<_Tp>...>::value) {} |
| |
| template <class _Alloc, |
| template <class...> class _IsImpDefault = __is_implicitly_default_constructible, |
| template <class...> class _IsDefault = is_default_constructible, |
| __enable_if_t< _And< _IsDefault<_Tp>... >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit(_Not<_Lazy<_And, _IsImpDefault<_Tp>...> >::value) |
| tuple(allocator_arg_t, _Alloc const& __a) |
| : __base_(allocator_arg_t(), |
| __a, |
| __tuple_indices<>(), |
| __tuple_types<>(), |
| typename __make_tuple_indices<sizeof...(_Tp), 0>::type(), |
| __tuple_types<_Tp...>()) {} |
| |
| // tuple(const T&...) constructors (including allocator_arg_t variants) |
| template <template <class...> class _And = _And, |
| __enable_if_t< _And< _BoolConstant<sizeof...(_Tp) >= 1>, is_copy_constructible<_Tp>... >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit( |
| _Not<_Lazy<_And, is_convertible<const _Tp&, _Tp>...> >::value) tuple(const _Tp&... __t) |
| _NOEXCEPT_(_And<is_nothrow_copy_constructible<_Tp>...>::value) |
| : __base_(typename __make_tuple_indices<sizeof...(_Tp)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(), |
| typename __make_tuple_indices<0>::type(), |
| typename __make_tuple_types<tuple, 0>::type(), |
| __t...) {} |
| |
| template <class _Alloc, |
| template <class...> class _And = _And, |
| __enable_if_t< _And< _BoolConstant<sizeof...(_Tp) >= 1>, is_copy_constructible<_Tp>... >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit( |
| _Not<_Lazy<_And, is_convertible<const _Tp&, _Tp>...> >::value) |
| tuple(allocator_arg_t, const _Alloc& __a, const _Tp&... __t) |
| : __base_(allocator_arg_t(), |
| __a, |
| typename __make_tuple_indices<sizeof...(_Tp)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp)>::type(), |
| typename __make_tuple_indices<0>::type(), |
| typename __make_tuple_types<tuple, 0>::type(), |
| __t...) {} |
| |
| // tuple(U&& ...) constructors (including allocator_arg_t variants) |
| template <class... _Up> |
| struct _IsThisTuple : false_type {}; |
| template <class _Up> |
| struct _IsThisTuple<_Up> : is_same<__remove_cvref_t<_Up>, tuple> {}; |
| |
| template <class... _Up> |
| struct _EnableUTypesCtor |
| : _And< _BoolConstant<sizeof...(_Tp) >= 1>, |
| _Not<_IsThisTuple<_Up...> >, // extension to allow mis-behaved user constructors |
| is_constructible<_Tp, _Up>... > {}; |
| |
| template <class... _Up, |
| __enable_if_t< _And< _BoolConstant<sizeof...(_Up) == sizeof...(_Tp)>, _EnableUTypesCtor<_Up...> >::value, |
| int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit(_Not<_Lazy<_And, is_convertible<_Up, _Tp>...> >::value) |
| tuple(_Up&&... __u) _NOEXCEPT_(_And<is_nothrow_constructible<_Tp, _Up>...>::value) |
| : __base_(typename __make_tuple_indices<sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type(), |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type(), |
| std::forward<_Up>(__u)...) {} |
| |
| template <class _Alloc, |
| class... _Up, |
| __enable_if_t< _And< _BoolConstant<sizeof...(_Up) == sizeof...(_Tp)>, _EnableUTypesCtor<_Up...> >::value, |
| int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit(_Not<_Lazy<_And, is_convertible<_Up, _Tp>...> >::value) |
| tuple(allocator_arg_t, const _Alloc& __a, _Up&&... __u) |
| : __base_(allocator_arg_t(), |
| __a, |
| typename __make_tuple_indices<sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Up)>::type(), |
| typename __make_tuple_indices<sizeof...(_Tp), sizeof...(_Up)>::type(), |
| typename __make_tuple_types<tuple, sizeof...(_Tp), sizeof...(_Up)>::type(), |
| std::forward<_Up>(__u)...) {} |
| |
| // Copy and move constructors (including the allocator_arg_t variants) |
| tuple(const tuple&) = default; |
| tuple(tuple&&) = default; |
| |
| template <class _Alloc, |
| template <class...> class _And = _And, |
| __enable_if_t< _And<is_copy_constructible<_Tp>...>::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple(allocator_arg_t, const _Alloc& __alloc, const tuple& __t) |
| : __base_(allocator_arg_t(), __alloc, __t) {} |
| |
| template <class _Alloc, |
| template <class...> class _And = _And, |
| __enable_if_t< _And<is_move_constructible<_Tp>...>::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple(allocator_arg_t, const _Alloc& __alloc, tuple&& __t) |
| : __base_(allocator_arg_t(), __alloc, std::move(__t)) {} |
| |
| // tuple(const tuple<U...>&) constructors (including allocator_arg_t variants) |
| |
| template <class _OtherTuple, class _DecayedOtherTuple = __remove_cvref_t<_OtherTuple>, class = void> |
| struct _EnableCtorFromUTypesTuple : false_type {}; |
| |
| template <class _OtherTuple, class... _Up> |
| struct _EnableCtorFromUTypesTuple< |
| _OtherTuple, |
| tuple<_Up...>, |
| // the length of the packs needs to checked first otherwise the 2 packs cannot be expanded simultaneously below |
| __enable_if_t<sizeof...(_Up) == sizeof...(_Tp)>> |
| : _And< |
| // the two conditions below are not in spec. The purpose is to disable the UTypes Ctor when copy/move Ctor |
| // can work. Otherwise, is_constructible can trigger hard error in those cases |
| // https://godbolt.org/z/M94cGdKcE |
| _Not<is_same<_OtherTuple, const tuple&> >, |
| _Not<is_same<_OtherTuple, tuple&&> >, |
| is_constructible<_Tp, __copy_cvref_t<_OtherTuple, _Up> >..., |
| _Lazy<_Or, |
| _BoolConstant<sizeof...(_Tp) != 1>, |
| // _Tp and _Up are 1-element packs - the pack expansions look |
| // weird to avoid tripping up the type traits in degenerate cases |
| _Lazy<_And, |
| _Not<is_same<_Tp, _Up> >..., |
| _Not<is_convertible<_OtherTuple, _Tp> >..., |
| _Not<is_constructible<_Tp, _OtherTuple> >... > > > {}; |
| |
| template <class... _Up, __enable_if_t< _And< _EnableCtorFromUTypesTuple<const tuple<_Up...>&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit( |
| _Not<_Lazy<_And, is_convertible<const _Up&, _Tp>...> >::value) tuple(const tuple<_Up...>& __t) |
| _NOEXCEPT_(_And<is_nothrow_constructible<_Tp, const _Up&>...>::value) |
| : __base_(__t) {} |
| |
| template <class... _Up, |
| class _Alloc, |
| __enable_if_t< _And< _EnableCtorFromUTypesTuple<const tuple<_Up...>&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit( |
| _Not<_Lazy<_And, is_convertible<const _Up&, _Tp>...> >::value) |
| tuple(allocator_arg_t, const _Alloc& __a, const tuple<_Up...>& __t) |
| : __base_(allocator_arg_t(), __a, __t) {} |
| |
| # if _LIBCPP_STD_VER >= 23 |
| // tuple(tuple<U...>&) constructors (including allocator_arg_t variants) |
| |
| template <class... _Up, enable_if_t< _EnableCtorFromUTypesTuple<tuple<_Up...>&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_Lazy<_And, is_convertible<_Up&, _Tp>...>::value) tuple(tuple<_Up...>& __t) |
| : __base_(__t) {} |
| |
| template <class _Alloc, class... _Up, enable_if_t< _EnableCtorFromUTypesTuple<tuple<_Up...>&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_Lazy<_And, is_convertible<_Up&, _Tp>...>::value) |
| tuple(allocator_arg_t, const _Alloc& __alloc, tuple<_Up...>& __t) |
| : __base_(allocator_arg_t(), __alloc, __t) {} |
| # endif // _LIBCPP_STD_VER >= 23 |
| |
| // tuple(tuple<U...>&&) constructors (including allocator_arg_t variants) |
| template <class... _Up, __enable_if_t< _And< _EnableCtorFromUTypesTuple<tuple<_Up...>&&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit(_Not<_Lazy<_And, is_convertible<_Up, _Tp>...> >::value) |
| tuple(tuple<_Up...>&& __t) _NOEXCEPT_(_And<is_nothrow_constructible<_Tp, _Up>...>::value) |
| : __base_(std::move(__t)) {} |
| |
| template <class _Alloc, |
| class... _Up, |
| __enable_if_t< _And< _EnableCtorFromUTypesTuple<tuple<_Up...>&&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit(_Not<_Lazy<_And, is_convertible<_Up, _Tp>...> >::value) |
| tuple(allocator_arg_t, const _Alloc& __a, tuple<_Up...>&& __t) |
| : __base_(allocator_arg_t(), __a, std::move(__t)) {} |
| |
| # if _LIBCPP_STD_VER >= 23 |
| // tuple(const tuple<U...>&&) constructors (including allocator_arg_t variants) |
| |
| template <class... _Up, enable_if_t< _EnableCtorFromUTypesTuple<const tuple<_Up...>&&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_Lazy<_And, is_convertible<const _Up&&, _Tp>...>::value) |
| tuple(const tuple<_Up...>&& __t) |
| : __base_(std::move(__t)) {} |
| |
| template <class _Alloc, |
| class... _Up, |
| enable_if_t< _EnableCtorFromUTypesTuple<const tuple<_Up...>&&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_Lazy<_And, is_convertible<const _Up&&, _Tp>...>::value) |
| tuple(allocator_arg_t, const _Alloc& __alloc, const tuple<_Up...>&& __t) |
| : __base_(allocator_arg_t(), __alloc, std::move(__t)) {} |
| # endif // _LIBCPP_STD_VER >= 23 |
| |
| // tuple(const pair<U1, U2>&) constructors (including allocator_arg_t variants) |
| |
| template <template <class...> class _Pred, |
| class _Pair, |
| class _DecayedPair = __remove_cvref_t<_Pair>, |
| class _Tuple = tuple> |
| struct _CtorPredicateFromPair : false_type {}; |
| |
| template <template <class...> class _Pred, class _Pair, class _Up1, class _Up2, class _Tp1, class _Tp2> |
| struct _CtorPredicateFromPair<_Pred, _Pair, pair<_Up1, _Up2>, tuple<_Tp1, _Tp2> > |
| : _And< _Pred<_Tp1, __copy_cvref_t<_Pair, _Up1> >, _Pred<_Tp2, __copy_cvref_t<_Pair, _Up2> > > {}; |
| |
| template <class _Pair> |
| struct _EnableCtorFromPair : _CtorPredicateFromPair<is_constructible, _Pair> {}; |
| |
| template <class _Pair> |
| struct _NothrowConstructibleFromPair : _CtorPredicateFromPair<is_nothrow_constructible, _Pair> {}; |
| |
| template <class _Pair, class _DecayedPair = __remove_cvref_t<_Pair>, class _Tuple = tuple> |
| struct _BothImplicitlyConvertible : false_type {}; |
| |
| template <class _Pair, class _Up1, class _Up2, class _Tp1, class _Tp2> |
| struct _BothImplicitlyConvertible<_Pair, pair<_Up1, _Up2>, tuple<_Tp1, _Tp2> > |
| : _And< is_convertible<__copy_cvref_t<_Pair, _Up1>, _Tp1>, is_convertible<__copy_cvref_t<_Pair, _Up2>, _Tp2> > {}; |
| |
| template <class _Up1, |
| class _Up2, |
| template <class...> class _And = _And, |
| __enable_if_t< _And< _EnableCtorFromPair<const pair<_Up1, _Up2>&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit( |
| _Not<_BothImplicitlyConvertible<const pair<_Up1, _Up2>&> >::value) tuple(const pair<_Up1, _Up2>& __p) |
| _NOEXCEPT_(_NothrowConstructibleFromPair<const pair<_Up1, _Up2>&>::value) |
| : __base_(__p) {} |
| |
| template <class _Alloc, |
| class _Up1, |
| class _Up2, |
| template <class...> class _And = _And, |
| __enable_if_t< _And< _EnableCtorFromPair<const pair<_Up1, _Up2>&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit( |
| _Not<_BothImplicitlyConvertible<const pair<_Up1, _Up2>&> >::value) |
| tuple(allocator_arg_t, const _Alloc& __a, const pair<_Up1, _Up2>& __p) |
| : __base_(allocator_arg_t(), __a, __p) {} |
| |
| # if _LIBCPP_STD_VER >= 23 |
| // tuple(pair<U1, U2>&) constructors (including allocator_arg_t variants) |
| |
| template <class _U1, class _U2, enable_if_t< _EnableCtorFromPair<pair<_U1, _U2>&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_BothImplicitlyConvertible<pair<_U1, _U2>&>::value) |
| tuple(pair<_U1, _U2>& __p) |
| : __base_(__p) {} |
| |
| template <class _Alloc, |
| class _U1, |
| class _U2, |
| enable_if_t< _EnableCtorFromPair<std::pair<_U1, _U2>&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_BothImplicitlyConvertible<pair<_U1, _U2>&>::value) |
| tuple(allocator_arg_t, const _Alloc& __alloc, pair<_U1, _U2>& __p) |
| : __base_(allocator_arg_t(), __alloc, __p) {} |
| # endif |
| |
| // tuple(pair<U1, U2>&&) constructors (including allocator_arg_t variants) |
| |
| template <class _Up1, |
| class _Up2, |
| template <class...> class _And = _And, |
| __enable_if_t< _And< _EnableCtorFromPair<pair<_Up1, _Up2>&&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 explicit( |
| _Not<_BothImplicitlyConvertible<pair<_Up1, _Up2>&&> >::value) tuple(pair<_Up1, _Up2>&& __p) |
| _NOEXCEPT_(_NothrowConstructibleFromPair<pair<_Up1, _Up2>&&>::value) |
| : __base_(std::move(__p)) {} |
| |
| template <class _Alloc, |
| class _Up1, |
| class _Up2, |
| template <class...> class _And = _And, |
| __enable_if_t< _And< _EnableCtorFromPair<pair<_Up1, _Up2>&&> >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 explicit( |
| _Not<_BothImplicitlyConvertible<pair<_Up1, _Up2>&&> >::value) |
| tuple(allocator_arg_t, const _Alloc& __a, pair<_Up1, _Up2>&& __p) |
| : __base_(allocator_arg_t(), __a, std::move(__p)) {} |
| |
| # if _LIBCPP_STD_VER >= 23 |
| // tuple(const pair<U1, U2>&&) constructors (including allocator_arg_t variants) |
| |
| template <class _U1, class _U2, enable_if_t< _EnableCtorFromPair<const pair<_U1, _U2>&&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_BothImplicitlyConvertible<const pair<_U1, _U2>&&>::value) |
| tuple(const pair<_U1, _U2>&& __p) |
| : __base_(std::move(__p)) {} |
| |
| template <class _Alloc, |
| class _U1, |
| class _U2, |
| enable_if_t< _EnableCtorFromPair<const pair<_U1, _U2>&&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr explicit(!_BothImplicitlyConvertible<const pair<_U1, _U2>&&>::value) |
| tuple(allocator_arg_t, const _Alloc& __alloc, const pair<_U1, _U2>&& __p) |
| : __base_(allocator_arg_t(), __alloc, std::move(__p)) {} |
| # endif // _LIBCPP_STD_VER >= 23 |
| |
| // [tuple.assign] |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& |
| operator=(_If<_And<is_copy_assignable<_Tp>...>::value, tuple, __nat> const& __tuple) |
| _NOEXCEPT_(_And<is_nothrow_copy_assignable<_Tp>...>::value) { |
| std::__memberwise_copy_assign(*this, __tuple, typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| # if _LIBCPP_STD_VER >= 23 |
| _LIBCPP_HIDE_FROM_ABI constexpr const tuple& operator=(tuple const& __tuple) const |
| requires(_And<is_copy_assignable<const _Tp>...>::value) |
| { |
| std::__memberwise_copy_assign(*this, __tuple, typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr const tuple& operator=(tuple&& __tuple) const |
| requires(_And<is_assignable<const _Tp&, _Tp>...>::value) |
| { |
| std::__memberwise_forward_assign( |
| *this, std::move(__tuple), __tuple_types<_Tp...>(), typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| # endif // _LIBCPP_STD_VER >= 23 |
| |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& |
| operator=(_If<_And<is_move_assignable<_Tp>...>::value, tuple, __nat>&& __tuple) |
| _NOEXCEPT_(_And<is_nothrow_move_assignable<_Tp>...>::value) { |
| std::__memberwise_forward_assign( |
| *this, std::move(__tuple), __tuple_types<_Tp...>(), typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| template < |
| class... _Up, |
| __enable_if_t< _And< _BoolConstant<sizeof...(_Tp) == sizeof...(_Up)>, is_assignable<_Tp&, _Up const&>... >::value, |
| int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& operator=(tuple<_Up...> const& __tuple) |
| _NOEXCEPT_(_And<is_nothrow_assignable<_Tp&, _Up const&>...>::value) { |
| std::__memberwise_copy_assign(*this, __tuple, typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| template <class... _Up, |
| __enable_if_t< _And< _BoolConstant<sizeof...(_Tp) == sizeof...(_Up)>, is_assignable<_Tp&, _Up>... >::value, |
| int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& operator=(tuple<_Up...>&& __tuple) |
| _NOEXCEPT_(_And<is_nothrow_assignable<_Tp&, _Up>...>::value) { |
| std::__memberwise_forward_assign( |
| *this, std::move(__tuple), __tuple_types<_Up...>(), typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| # if _LIBCPP_STD_VER >= 23 |
| template <class... _UTypes, |
| enable_if_t< _And<_BoolConstant<sizeof...(_Tp) == sizeof...(_UTypes)>, |
| is_assignable<const _Tp&, const _UTypes&>...>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr const tuple& operator=(const tuple<_UTypes...>& __u) const { |
| std::__memberwise_copy_assign(*this, __u, typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| template <class... _UTypes, |
| enable_if_t< _And<_BoolConstant<sizeof...(_Tp) == sizeof...(_UTypes)>, |
| is_assignable<const _Tp&, _UTypes>...>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr const tuple& operator=(tuple<_UTypes...>&& __u) const { |
| std::__memberwise_forward_assign( |
| *this, __u, __tuple_types<_UTypes...>(), typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| # endif // _LIBCPP_STD_VER >= 23 |
| |
| template <template <class...> class _Pred, |
| bool _Const, |
| class _Pair, |
| class _DecayedPair = __remove_cvref_t<_Pair>, |
| class _Tuple = tuple> |
| struct _AssignPredicateFromPair : false_type {}; |
| |
| template <template <class...> class _Pred, bool _Const, class _Pair, class _Up1, class _Up2, class _Tp1, class _Tp2> |
| struct _AssignPredicateFromPair<_Pred, _Const, _Pair, pair<_Up1, _Up2>, tuple<_Tp1, _Tp2> > |
| : _And<_Pred<__maybe_const<_Const, _Tp1>&, __copy_cvref_t<_Pair, _Up1> >, |
| _Pred<__maybe_const<_Const, _Tp2>&, __copy_cvref_t<_Pair, _Up2> > > {}; |
| |
| template <bool _Const, class _Pair> |
| struct _EnableAssignFromPair : _AssignPredicateFromPair<is_assignable, _Const, _Pair> {}; |
| |
| template <bool _Const, class _Pair> |
| struct _NothrowAssignFromPair : _AssignPredicateFromPair<is_nothrow_assignable, _Const, _Pair> {}; |
| |
| # if _LIBCPP_STD_VER >= 23 |
| template <class _U1, class _U2, enable_if_t< _EnableAssignFromPair<true, const pair<_U1, _U2>&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr const tuple& operator=(const pair<_U1, _U2>& __pair) const |
| noexcept(_NothrowAssignFromPair<true, const pair<_U1, _U2>&>::value) { |
| std::get<0>(*this) = __pair.first; |
| std::get<1>(*this) = __pair.second; |
| return *this; |
| } |
| |
| template <class _U1, class _U2, enable_if_t< _EnableAssignFromPair<true, pair<_U1, _U2>&&>::value>* = nullptr> |
| _LIBCPP_HIDE_FROM_ABI constexpr const tuple& operator=(pair<_U1, _U2>&& __pair) const |
| noexcept(_NothrowAssignFromPair<true, pair<_U1, _U2>&&>::value) { |
| std::get<0>(*this) = std::move(__pair.first); |
| std::get<1>(*this) = std::move(__pair.second); |
| return *this; |
| } |
| # endif // _LIBCPP_STD_VER >= 23 |
| |
| template <class _Up1, |
| class _Up2, |
| __enable_if_t< _EnableAssignFromPair<false, pair<_Up1, _Up2> const&>::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& operator=(pair<_Up1, _Up2> const& __pair) |
| _NOEXCEPT_(_NothrowAssignFromPair<false, pair<_Up1, _Up2> const&>::value) { |
| std::get<0>(*this) = __pair.first; |
| std::get<1>(*this) = __pair.second; |
| return *this; |
| } |
| |
| template <class _Up1, class _Up2, __enable_if_t< _EnableAssignFromPair<false, pair<_Up1, _Up2>&&>::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& operator=(pair<_Up1, _Up2>&& __pair) |
| _NOEXCEPT_(_NothrowAssignFromPair<false, pair<_Up1, _Up2>&&>::value) { |
| std::get<0>(*this) = std::forward<_Up1>(__pair.first); |
| std::get<1>(*this) = std::forward<_Up2>(__pair.second); |
| return *this; |
| } |
| |
| // EXTENSION |
| template < |
| class _Up, |
| size_t _Np, |
| __enable_if_t< _And< _BoolConstant<_Np == sizeof...(_Tp)>, is_assignable<_Tp&, _Up const&>... >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& operator=(array<_Up, _Np> const& __array) |
| _NOEXCEPT_(_And<is_nothrow_assignable<_Tp&, _Up const&>...>::value) { |
| std::__memberwise_copy_assign(*this, __array, typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| // EXTENSION |
| template <class _Up, |
| size_t _Np, |
| class = void, |
| __enable_if_t< _And< _BoolConstant<_Np == sizeof...(_Tp)>, is_assignable<_Tp&, _Up>... >::value, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple& operator=(array<_Up, _Np>&& __array) |
| _NOEXCEPT_(_And<is_nothrow_assignable<_Tp&, _Up>...>::value) { |
| std::__memberwise_forward_assign( |
| *this, |
| std::move(__array), |
| __tuple_types<_If<true, _Up, _Tp>...>(), |
| typename __make_tuple_indices<sizeof...(_Tp)>::type()); |
| return *this; |
| } |
| |
| // [tuple.swap] |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void swap(tuple& __t) |
| _NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value) { |
| __base_.swap(__t.__base_); |
| } |
| |
| # if _LIBCPP_STD_VER >= 23 |
| _LIBCPP_HIDE_FROM_ABI constexpr void swap(const tuple& __t) const |
| noexcept(__all<is_nothrow_swappable_v<const _Tp&>...>::value) { |
| __base_.swap(__t.__base_); |
| } |
| # endif // _LIBCPP_STD_VER >= 23 |
| }; |
| |
| template <> |
| class _LIBCPP_TEMPLATE_VIS tuple<> { |
| public: |
| constexpr tuple() _NOEXCEPT = default; |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple(allocator_arg_t, const _Alloc&) _NOEXCEPT {} |
| template <class _Alloc> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple(allocator_arg_t, const _Alloc&, const tuple&) _NOEXCEPT {} |
| template <class _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple(array<_Up, 0>) _NOEXCEPT {} |
| template <class _Alloc, class _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 tuple(allocator_arg_t, const _Alloc&, array<_Up, 0>) _NOEXCEPT {} |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void swap(tuple&) _NOEXCEPT {} |
| # if _LIBCPP_STD_VER >= 23 |
| _LIBCPP_HIDE_FROM_ABI constexpr void swap(const tuple&) const noexcept {} |
| # endif |
| }; |
| |
| # if _LIBCPP_STD_VER >= 23 |
| template <class... _TTypes, class... _UTypes, template <class> class _TQual, template <class> class _UQual> |
| requires requires { typename tuple<common_reference_t<_TQual<_TTypes>, _UQual<_UTypes>>...>; } |
| struct basic_common_reference<tuple<_TTypes...>, tuple<_UTypes...>, _TQual, _UQual> { |
| using type = tuple<common_reference_t<_TQual<_TTypes>, _UQual<_UTypes>>...>; |
| }; |
| |
| template <class... _TTypes, class... _UTypes> |
| requires requires { typename tuple<common_type_t<_TTypes, _UTypes>...>; } |
| struct common_type<tuple<_TTypes...>, tuple<_UTypes...>> { |
| using type = tuple<common_type_t<_TTypes, _UTypes>...>; |
| }; |
| # endif // _LIBCPP_STD_VER >= 23 |
| |
| # if _LIBCPP_STD_VER >= 17 |
| template <class... _Tp> |
| tuple(_Tp...) -> tuple<_Tp...>; |
| template <class _Tp1, class _Tp2> |
| tuple(pair<_Tp1, _Tp2>) -> tuple<_Tp1, _Tp2>; |
| template <class _Alloc, class... _Tp> |
| tuple(allocator_arg_t, _Alloc, _Tp...) -> tuple<_Tp...>; |
| template <class _Alloc, class _Tp1, class _Tp2> |
| tuple(allocator_arg_t, _Alloc, pair<_Tp1, _Tp2>) -> tuple<_Tp1, _Tp2>; |
| template <class _Alloc, class... _Tp> |
| tuple(allocator_arg_t, _Alloc, tuple<_Tp...>) -> tuple<_Tp...>; |
| # endif |
| |
| template <class... _Tp, __enable_if_t<__all<__is_swappable<_Tp>::value...>::value, int> = 0> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 void swap(tuple<_Tp...>& __t, tuple<_Tp...>& __u) |
| _NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value) { |
| __t.swap(__u); |
| } |
| |
| # if _LIBCPP_STD_VER >= 23 |
| template <class... _Tp> |
| _LIBCPP_HIDE_FROM_ABI constexpr enable_if_t<__all<is_swappable_v<const _Tp>...>::value, void> |
| swap(const tuple<_Tp...>& __lhs, |
| const tuple<_Tp...>& __rhs) noexcept(__all<is_nothrow_swappable_v<const _Tp>...>::value) { |
| __lhs.swap(__rhs); |
| } |
| # endif |
| |
| // get |
| |
| template <size_t _Ip, class... _Tp> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, tuple<_Tp...> >::type& |
| get(tuple<_Tp...>& __t) _NOEXCEPT { |
| typedef _LIBCPP_NODEBUG typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<__tuple_leaf<_Ip, type>&>(__t.__base_).get(); |
| } |
| |
| template <size_t _Ip, class... _Tp> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, tuple<_Tp...> >::type& |
| get(const tuple<_Tp...>& __t) _NOEXCEPT { |
| typedef _LIBCPP_NODEBUG typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<const __tuple_leaf<_Ip, type>&>(__t.__base_).get(); |
| } |
| |
| template <size_t _Ip, class... _Tp> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename tuple_element<_Ip, tuple<_Tp...> >::type&& |
| get(tuple<_Tp...>&& __t) _NOEXCEPT { |
| typedef _LIBCPP_NODEBUG typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<type&&>(static_cast<__tuple_leaf<_Ip, type>&&>(__t.__base_).get()); |
| } |
| |
| template <size_t _Ip, class... _Tp> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const typename tuple_element<_Ip, tuple<_Tp...> >::type&& |
| get(const tuple<_Tp...>&& __t) _NOEXCEPT { |
| typedef _LIBCPP_NODEBUG typename tuple_element<_Ip, tuple<_Tp...> >::type type; |
| return static_cast<const type&&>(static_cast<const __tuple_leaf<_Ip, type>&&>(__t.__base_).get()); |
| } |
| |
| # if _LIBCPP_STD_VER >= 14 |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr _T1& get(tuple<_Args...>& __tup) noexcept { |
| return std::get<__find_exactly_one_t<_T1, _Args...>::value>(__tup); |
| } |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr _T1 const& get(tuple<_Args...> const& __tup) noexcept { |
| return std::get<__find_exactly_one_t<_T1, _Args...>::value>(__tup); |
| } |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr _T1&& get(tuple<_Args...>&& __tup) noexcept { |
| return std::get<__find_exactly_one_t<_T1, _Args...>::value>(std::move(__tup)); |
| } |
| |
| template <class _T1, class... _Args> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr _T1 const&& get(tuple<_Args...> const&& __tup) noexcept { |
| return std::get<__find_exactly_one_t<_T1, _Args...>::value>(std::move(__tup)); |
| } |
| |
| # endif |
| |
| // tie |
| |
| template <class... _Tp> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 tuple<_Tp&...> tie(_Tp&... __t) _NOEXCEPT { |
| return tuple<_Tp&...>(__t...); |
| } |
| |
| template <class _Up> |
| struct __ignore_t { |
| template <class _Tp> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const __ignore_t& operator=(_Tp&&) const { |
| return *this; |
| } |
| }; |
| |
| # if _LIBCPP_STD_VER >= 17 |
| inline constexpr __ignore_t<unsigned char> ignore = __ignore_t<unsigned char>(); |
| # else |
| namespace { |
| constexpr __ignore_t<unsigned char> ignore = __ignore_t<unsigned char>(); |
| } // namespace |
| # endif |
| |
| template <class... _Tp> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 tuple<typename __unwrap_ref_decay<_Tp>::type...> |
| make_tuple(_Tp&&... __t) { |
| return tuple<typename __unwrap_ref_decay<_Tp>::type...>(std::forward<_Tp>(__t)...); |
| } |
| |
| template <class... _Tp> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 tuple<_Tp&&...> forward_as_tuple(_Tp&&... __t) _NOEXCEPT { |
| return tuple<_Tp&&...>(std::forward<_Tp>(__t)...); |
| } |
| |
| template <size_t _Ip> |
| struct __tuple_equal { |
| template <class _Tp, class _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _Tp& __x, const _Up& __y) { |
| return __tuple_equal<_Ip - 1>()(__x, __y) && std::get<_Ip - 1>(__x) == std::get<_Ip - 1>(__y); |
| } |
| }; |
| |
| template <> |
| struct __tuple_equal<0> { |
| template <class _Tp, class _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _Tp&, const _Up&) { |
| return true; |
| } |
| }; |
| |
| template <class... _Tp, class... _Up> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool |
| operator==(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) { |
| static_assert(sizeof...(_Tp) == sizeof...(_Up), "Can't compare tuples of different sizes"); |
| return __tuple_equal<sizeof...(_Tp)>()(__x, __y); |
| } |
| |
| # if _LIBCPP_STD_VER >= 20 |
| |
| // operator<=> |
| |
| template <class... _Tp, class... _Up, size_t... _Is> |
| _LIBCPP_HIDE_FROM_ABI constexpr auto |
| __tuple_compare_three_way(const tuple<_Tp...>& __x, const tuple<_Up...>& __y, index_sequence<_Is...>) { |
| common_comparison_category_t<__synth_three_way_result<_Tp, _Up>...> __result = strong_ordering::equal; |
| static_cast<void>( |
| ((__result = std::__synth_three_way(std::get<_Is>(__x), std::get<_Is>(__y)), __result != 0) || ...)); |
| return __result; |
| } |
| |
| template <class... _Tp, class... _Up> |
| requires(sizeof...(_Tp) == sizeof...(_Up)) |
| _LIBCPP_HIDE_FROM_ABI constexpr common_comparison_category_t<__synth_three_way_result<_Tp, _Up>...> |
| operator<=>(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) { |
| return std::__tuple_compare_three_way(__x, __y, index_sequence_for<_Tp...>{}); |
| } |
| |
| # else // _LIBCPP_STD_VER >= 20 |
| |
| template <class... _Tp, class... _Up> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool |
| operator!=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) { |
| return !(__x == __y); |
| } |
| |
| template <size_t _Ip> |
| struct __tuple_less { |
| template <class _Tp, class _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _Tp& __x, const _Up& __y) { |
| const size_t __idx = tuple_size<_Tp>::value - _Ip; |
| if (std::get<__idx>(__x) < std::get<__idx>(__y)) |
| return true; |
| if (std::get<__idx>(__y) < std::get<__idx>(__x)) |
| return false; |
| return __tuple_less<_Ip - 1>()(__x, __y); |
| } |
| }; |
| |
| template <> |
| struct __tuple_less<0> { |
| template <class _Tp, class _Up> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool operator()(const _Tp&, const _Up&) { |
| return false; |
| } |
| }; |
| |
| template <class... _Tp, class... _Up> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool |
| operator<(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) { |
| static_assert(sizeof...(_Tp) == sizeof...(_Up), "Can't compare tuples of different sizes"); |
| return __tuple_less<sizeof...(_Tp)>()(__x, __y); |
| } |
| |
| template <class... _Tp, class... _Up> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool |
| operator>(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) { |
| return __y < __x; |
| } |
| |
| template <class... _Tp, class... _Up> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool |
| operator>=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) { |
| return !(__x < __y); |
| } |
| |
| template <class... _Tp, class... _Up> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 bool |
| operator<=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y) { |
| return !(__y < __x); |
| } |
| |
| # endif // _LIBCPP_STD_VER >= 20 |
| |
| // tuple_cat |
| |
| template <class _Tp, class _Up> |
| struct __tuple_cat_type; |
| |
| template <class... _Ttypes, class... _Utypes> |
| struct __tuple_cat_type<tuple<_Ttypes...>, __tuple_types<_Utypes...> > { |
| typedef _LIBCPP_NODEBUG tuple<_Ttypes..., _Utypes...> type; |
| }; |
| |
| template <class _ResultTuple, bool _Is_Tuple0TupleLike, class... _Tuples> |
| struct __tuple_cat_return_1 {}; |
| |
| template <class... _Types, class _Tuple0> |
| struct __tuple_cat_return_1<tuple<_Types...>, true, _Tuple0> { |
| using type _LIBCPP_NODEBUG = |
| typename __tuple_cat_type< tuple<_Types...>, |
| typename __make_tuple_types<__remove_cvref_t<_Tuple0> >::type >::type; |
| }; |
| |
| template <class... _Types, class _Tuple0, class _Tuple1, class... _Tuples> |
| struct __tuple_cat_return_1<tuple<_Types...>, true, _Tuple0, _Tuple1, _Tuples...> |
| : public __tuple_cat_return_1< |
| typename __tuple_cat_type< tuple<_Types...>, |
| typename __make_tuple_types<__remove_cvref_t<_Tuple0> >::type >::type, |
| __tuple_like_ext<__libcpp_remove_reference_t<_Tuple1> >::value, |
| _Tuple1, |
| _Tuples...> {}; |
| |
| template <class... _Tuples> |
| struct __tuple_cat_return; |
| |
| template <class _Tuple0, class... _Tuples> |
| struct __tuple_cat_return<_Tuple0, _Tuples...> |
| : public __tuple_cat_return_1<tuple<>, |
| __tuple_like_ext<__libcpp_remove_reference_t<_Tuple0> >::value, |
| _Tuple0, |
| _Tuples...> {}; |
| |
| template <> |
| struct __tuple_cat_return<> { |
| typedef _LIBCPP_NODEBUG tuple<> type; |
| }; |
| |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 tuple<> tuple_cat() { return tuple<>(); } |
| |
| template <class _Rp, class _Indices, class _Tuple0, class... _Tuples> |
| struct __tuple_cat_return_ref_imp; |
| |
| template <class... _Types, size_t... _I0, class _Tuple0> |
| struct __tuple_cat_return_ref_imp<tuple<_Types...>, __tuple_indices<_I0...>, _Tuple0> { |
| typedef _LIBCPP_NODEBUG __libcpp_remove_reference_t<_Tuple0> _T0; |
| typedef tuple<_Types..., __apply_cv_t<_Tuple0, typename tuple_element<_I0, _T0>::type>&&...> type; |
| }; |
| |
| template <class... _Types, size_t... _I0, class _Tuple0, class _Tuple1, class... _Tuples> |
| struct __tuple_cat_return_ref_imp<tuple<_Types...>, __tuple_indices<_I0...>, _Tuple0, _Tuple1, _Tuples...> |
| : public __tuple_cat_return_ref_imp< |
| tuple<_Types..., |
| __apply_cv_t<_Tuple0, typename tuple_element<_I0, __libcpp_remove_reference_t<_Tuple0>>::type>&&...>, |
| typename __make_tuple_indices<tuple_size<__libcpp_remove_reference_t<_Tuple1> >::value>::type, |
| _Tuple1, |
| _Tuples...> {}; |
| |
| template <class _Tuple0, class... _Tuples> |
| struct __tuple_cat_return_ref |
| : public __tuple_cat_return_ref_imp< |
| tuple<>, |
| typename __make_tuple_indices< tuple_size<__libcpp_remove_reference_t<_Tuple0> >::value >::type, |
| _Tuple0, |
| _Tuples...> {}; |
| |
| template <class _Types, class _I0, class _J0> |
| struct __tuple_cat; |
| |
| template <class... _Types, size_t... _I0, size_t... _J0> |
| struct __tuple_cat<tuple<_Types...>, __tuple_indices<_I0...>, __tuple_indices<_J0...> > { |
| template <class _Tuple0> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 |
| typename __tuple_cat_return_ref<tuple<_Types...>&&, _Tuple0&&>::type |
| operator()(tuple<_Types...> __t, _Tuple0&& __t0) { |
| (void)__t; // avoid unused parameter warning on GCC when _I0 is empty |
| return std::forward_as_tuple( |
| std::forward<_Types>(std::get<_I0>(__t))..., std::get<_J0>(std::forward<_Tuple0>(__t0))...); |
| } |
| |
| template <class _Tuple0, class _Tuple1, class... _Tuples> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 |
| typename __tuple_cat_return_ref<tuple<_Types...>&&, _Tuple0&&, _Tuple1&&, _Tuples&&...>::type |
| operator()(tuple<_Types...> __t, _Tuple0&& __t0, _Tuple1&& __t1, _Tuples&&... __tpls) { |
| (void)__t; // avoid unused parameter warning on GCC when _I0 is empty |
| typedef _LIBCPP_NODEBUG __libcpp_remove_reference_t<_Tuple0> _T0; |
| typedef _LIBCPP_NODEBUG __libcpp_remove_reference_t<_Tuple1> _T1; |
| return __tuple_cat<tuple<_Types..., __apply_cv_t<_Tuple0, typename tuple_element<_J0, _T0>::type>&&...>, |
| typename __make_tuple_indices<sizeof...(_Types) + tuple_size<_T0>::value>::type, |
| typename __make_tuple_indices<tuple_size<_T1>::value>::type>()( |
| std::forward_as_tuple( |
| std::forward<_Types>(std::get<_I0>(__t))..., std::get<_J0>(std::forward<_Tuple0>(__t0))...), |
| std::forward<_Tuple1>(__t1), |
| std::forward<_Tuples>(__tpls)...); |
| } |
| }; |
| |
| template <class _Tuple0, class... _Tuples> |
| inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 typename __tuple_cat_return<_Tuple0, _Tuples...>::type |
| tuple_cat(_Tuple0&& __t0, _Tuples&&... __tpls) { |
| typedef _LIBCPP_NODEBUG __libcpp_remove_reference_t<_Tuple0> _T0; |
| return __tuple_cat<tuple<>, __tuple_indices<>, typename __make_tuple_indices<tuple_size<_T0>::value>::type>()( |
| tuple<>(), std::forward<_Tuple0>(__t0), std::forward<_Tuples>(__tpls)...); |
| } |
| |
| template <class... _Tp, class _Alloc> |
| struct _LIBCPP_TEMPLATE_VIS uses_allocator<tuple<_Tp...>, _Alloc> : true_type {}; |
| |
| # if _LIBCPP_STD_VER >= 17 |
| # define _LIBCPP_NOEXCEPT_RETURN(...) \ |
| noexcept(noexcept(__VA_ARGS__)) { return __VA_ARGS__; } |
| |
| // The _LIBCPP_NOEXCEPT_RETURN macro breaks formatting. |
| // clang-format off |
| template <class _Fn, class _Tuple, size_t... _Id> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) |
| __apply_tuple_impl(_Fn&& __f, _Tuple&& __t, __tuple_indices<_Id...>) |
| _LIBCPP_NOEXCEPT_RETURN(std::__invoke(std::forward<_Fn>(__f), std::get<_Id>(std::forward<_Tuple>(__t))...)) |
| |
| template <class _Fn, class _Tuple> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) apply(_Fn&& __f, _Tuple&& __t) |
| _LIBCPP_NOEXCEPT_RETURN(std::__apply_tuple_impl( |
| std::forward<_Fn>(__f), |
| std::forward<_Tuple>(__t), |
| typename __make_tuple_indices<tuple_size_v<remove_reference_t<_Tuple>>>::type{})) |
| |
| #if _LIBCPP_STD_VER >= 20 |
| template <class _Tp, class _Tuple, size_t... _Idx> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr _Tp __make_from_tuple_impl(_Tuple&& __t, __tuple_indices<_Idx...>) |
| noexcept(noexcept(_Tp(std::get<_Idx>(std::forward<_Tuple>(__t))...))) |
| requires is_constructible_v<_Tp, decltype(std::get<_Idx>(std::forward<_Tuple>(__t)))...> { |
| return _Tp(std::get<_Idx>(std::forward<_Tuple>(__t))...); |
| } |
| #else |
| template <class _Tp, class _Tuple, size_t... _Idx> |
| inline _LIBCPP_HIDE_FROM_ABI constexpr _Tp __make_from_tuple_impl(_Tuple&& __t, __tuple_indices<_Idx...>, |
| enable_if_t<is_constructible_v<_Tp, decltype(std::get<_Idx>(std::forward<_Tuple>(__t)))...>> * = nullptr) |
| _LIBCPP_NOEXCEPT_RETURN(_Tp(std::get<_Idx>(std::forward<_Tuple>(__t))...)) |
| #endif // _LIBCPP_STD_VER >= 20 |
| |
| template <class _Tp, class _Tuple, |
| class _Seq = typename __make_tuple_indices<tuple_size_v<remove_reference_t<_Tuple>>>::type, class = void> |
| inline constexpr bool __can_make_from_tuple = false; |
| |
| template <class _Tp, class _Tuple, size_t... _Idx> |
| inline constexpr bool __can_make_from_tuple<_Tp, _Tuple, __tuple_indices<_Idx...>, |
| enable_if_t<is_constructible_v<_Tp, decltype(std::get<_Idx>(std::declval<_Tuple>()))...>>> = true; |
| |
| // Based on LWG3528(https://wg21.link/LWG3528) and http://eel.is/c++draft/description#structure.requirements-9, |
| // the standard allows to impose requirements, we constraint std::make_from_tuple to make std::make_from_tuple |
| // SFINAE friendly and also avoid worse diagnostic messages. We still keep the constraints of std::__make_from_tuple_impl |
| // so that std::__make_from_tuple_impl will have the same advantages when used alone. |
| #if _LIBCPP_STD_VER >= 20 |
| template <class _Tp, class _Tuple> |
| requires __can_make_from_tuple<_Tp, _Tuple> // strengthen |
| #else |
| template <class _Tp, class _Tuple, class = enable_if_t<__can_make_from_tuple<_Tp, _Tuple>>> // strengthen |
| #endif // _LIBCPP_STD_VER >= 20 |
| inline _LIBCPP_HIDE_FROM_ABI constexpr _Tp make_from_tuple(_Tuple&& __t) |
| _LIBCPP_NOEXCEPT_RETURN(std::__make_from_tuple_impl<_Tp>( |
| std::forward<_Tuple>(__t), typename __make_tuple_indices<tuple_size_v<remove_reference_t<_Tuple>>>::type{})) |
| # undef _LIBCPP_NOEXCEPT_RETURN |
| |
| # endif // _LIBCPP_STD_VER >= 17 |
| |
| #endif // !defined(_LIBCPP_CXX03_LANG) |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| _LIBCPP_POP_MACROS |
| |
| // clang-format on |
| |
| #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 |
| # include <exception> |
| # include <iosfwd> |
| # include <new> |
| # include <type_traits> |
| # include <typeinfo> |
| # include <utility> |
| #endif |
| |
| #endif // _LIBCPP_TUPLE |
