1093 lines
38 KiB
C++
1093 lines
38 KiB
C++
// -*- C++ -*-
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//===--------------------------- tuple ------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_TUPLE
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#define _LIBCPP_TUPLE
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/*
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tuple synopsis
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namespace std
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{
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template <class... T>
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class tuple {
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public:
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constexpr tuple();
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explicit tuple(const T&...);
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template <class... U>
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explicit tuple(U&&...);
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tuple(const tuple&) = default;
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tuple(tuple&&) = default;
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template <class... U>
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tuple(const tuple<U...>&);
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template <class... U>
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tuple(tuple<U...>&&);
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template <class U1, class U2>
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tuple(const pair<U1, U2>&); // iff sizeof...(T) == 2
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template <class U1, class U2>
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tuple(pair<U1, U2>&&); // iff sizeof...(T) == 2
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// allocator-extended constructors
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a);
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a, const T&...);
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template <class Alloc, class... U>
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tuple(allocator_arg_t, const Alloc& a, U&&...);
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a, const tuple&);
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template <class Alloc>
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tuple(allocator_arg_t, const Alloc& a, tuple&&);
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template <class Alloc, class... U>
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tuple(allocator_arg_t, const Alloc& a, const tuple<U...>&);
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template <class Alloc, class... U>
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tuple(allocator_arg_t, const Alloc& a, tuple<U...>&&);
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template <class Alloc, class U1, class U2>
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tuple(allocator_arg_t, const Alloc& a, const pair<U1, U2>&);
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template <class Alloc, class U1, class U2>
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tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&&);
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tuple& operator=(const tuple&);
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tuple&
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operator=(tuple&&) noexcept(AND(is_nothrow_move_assignable<T>::value ...));
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template <class... U>
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tuple& operator=(const tuple<U...>&);
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template <class... U>
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tuple& operator=(tuple<U...>&&);
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template <class U1, class U2>
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tuple& operator=(const pair<U1, U2>&); // iff sizeof...(T) == 2
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template <class U1, class U2>
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tuple& operator=(pair<U1, U2>&&); //iffsizeof...(T) == 2
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void swap(tuple&) noexcept(AND(swap(declval<T&>(), declval<T&>())...));
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};
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const unspecified ignore;
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template <class... T> tuple<V...> make_tuple(T&&...);
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template <class... T> tuple<ATypes...> forward_as_tuple(T&&...) noexcept;
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template <class... T> tuple<T&...> tie(T&...) noexcept;
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template <class... Tuples> tuple<CTypes...> tuple_cat(Tuples&&... tpls);
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// 20.4.1.4, tuple helper classes:
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template <class T> class tuple_size; // undefined
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template <class... T> class tuple_size<tuple<T...>>;
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template <intsize_t I, class T> class tuple_element; // undefined
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template <intsize_t I, class... T> class tuple_element<I, tuple<T...>>;
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// 20.4.1.5, element access:
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template <intsize_t I, class... T>
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typename tuple_element<I, tuple<T...>>::type&
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get(tuple<T...>&) noexcept;
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template <intsize_t I, class... T>
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typename tuple_element<I, tuple<T...>>::type const&
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get(const tuple<T...>&) noexcept;
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template <intsize_t I, class... T>
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typename tuple_element<I, tuple<T...>>::type&&
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get(tuple<T...>&&) noexcept;
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// 20.4.1.6, relational operators:
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template<class... T, class... U> bool operator==(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator<(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator!=(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator>(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator<=(const tuple<T...>&, const tuple<U...>&);
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template<class... T, class... U> bool operator>=(const tuple<T...>&, const tuple<U...>&);
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template <class... Types, class Alloc>
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struct uses_allocator<tuple<Types...>, Alloc>;
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template <class... Types>
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void
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swap(tuple<Types...>& x, tuple<Types...>& y) noexcept(noexcept(x.swap(y)));
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} // std
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*/
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#include <__config>
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#include <__tuple>
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#include <cstddef>
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#include <type_traits>
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#include <__functional_base>
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#include <utility>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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// allocator_arg_t
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struct _LIBCPP_TYPE_VIS allocator_arg_t { };
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#if defined(_LIBCPP_HAS_NO_CONSTEXPR) || defined(_LIBCPP_BUILDING_MEMORY)
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extern const allocator_arg_t allocator_arg;
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#else
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constexpr allocator_arg_t allocator_arg = allocator_arg_t();
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#endif
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// uses_allocator
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template <class _Tp>
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struct __has_allocator_type
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{
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private:
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struct __two {char __lx; char __lxx;};
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template <class _Up> static __two __test(...);
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template <class _Up> static char __test(typename _Up::allocator_type* = 0);
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public:
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static const bool value = sizeof(__test<_Tp>(0)) == 1;
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};
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template <class _Tp, class _Alloc, bool = __has_allocator_type<_Tp>::value>
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struct __uses_allocator
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: public integral_constant<bool,
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is_convertible<_Alloc, typename _Tp::allocator_type>::value>
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{
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};
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template <class _Tp, class _Alloc>
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struct __uses_allocator<_Tp, _Alloc, false>
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: public false_type
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{
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};
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template <class _Tp, class _Alloc>
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struct _LIBCPP_TYPE_VIS uses_allocator
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: public __uses_allocator<_Tp, _Alloc>
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{
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};
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#ifndef _LIBCPP_HAS_NO_VARIADICS
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// uses-allocator construction
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template <class _Tp, class _Alloc, class ..._Args>
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struct __uses_alloc_ctor_imp
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{
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static const bool __ua = uses_allocator<_Tp, _Alloc>::value;
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static const bool __ic =
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is_constructible<_Tp, allocator_arg_t, _Alloc, _Args...>::value;
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static const int value = __ua ? 2 - __ic : 0;
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};
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template <class _Tp, class _Alloc, class ..._Args>
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struct __uses_alloc_ctor
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: integral_constant<int, __uses_alloc_ctor_imp<_Tp, _Alloc, _Args...>::value>
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{};
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#endif // _LIBCPP_HAS_NO_VARIADICS
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#ifndef _LIBCPP_HAS_NO_VARIADICS
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// tuple_size
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template <class ..._Tp>
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class _LIBCPP_TYPE_VIS tuple_size<tuple<_Tp...> >
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: public integral_constant<size_t, sizeof...(_Tp)>
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{
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};
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// tuple_element
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template <size_t _Ip, class ..._Tp>
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class _LIBCPP_TYPE_VIS tuple_element<_Ip, tuple<_Tp...> >
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{
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public:
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typedef typename tuple_element<_Ip, __tuple_types<_Tp...> >::type type;
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};
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// __tuple_leaf
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template <size_t _Ip, class _Hp, bool=is_empty<_Hp>::value
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#if __has_feature(is_final)
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&& !__is_final(_Hp)
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#endif
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>
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class __tuple_leaf;
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template <size_t _Ip, class _Hp, bool _Ep>
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inline _LIBCPP_INLINE_VISIBILITY
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void swap(__tuple_leaf<_Ip, _Hp, _Ep>& __x, __tuple_leaf<_Ip, _Hp, _Ep>& __y)
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_NOEXCEPT_(__is_nothrow_swappable<_Hp>::value)
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{
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swap(__x.get(), __y.get());
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}
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template <size_t _Ip, class _Hp, bool>
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class __tuple_leaf
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{
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_Hp value;
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__tuple_leaf& operator=(const __tuple_leaf&);
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public:
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_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR __tuple_leaf()
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_NOEXCEPT_(is_nothrow_default_constructible<_Hp>::value) : value()
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 0>, const _Alloc&)
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: value()
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 1>, const _Alloc& __a)
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: value(allocator_arg_t(), __a)
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 2>, const _Alloc& __a)
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: value(__a)
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{static_assert(!is_reference<_Hp>::value,
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"Attempted to default construct a reference element in a tuple");}
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template <class _Tp,
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class = typename enable_if<is_constructible<_Hp, _Tp>::value>::type>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(_Tp&& __t) _NOEXCEPT_((is_nothrow_constructible<_Hp, _Tp>::value))
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: value(_VSTD::forward<_Tp>(__t))
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{static_assert(!is_reference<_Hp>::value ||
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(is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value)) ||
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(is_rvalue_reference<_Hp>::value &&
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!is_lvalue_reference<_Tp>::value),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 0>, const _Alloc&, _Tp&& __t)
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: value(_VSTD::forward<_Tp>(__t))
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{static_assert(!is_lvalue_reference<_Hp>::value ||
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(is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value)),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t)
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: value(allocator_arg_t(), __a, _VSTD::forward<_Tp>(__t))
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{static_assert(!is_lvalue_reference<_Hp>::value ||
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(is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value)),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t)
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: value(_VSTD::forward<_Tp>(__t), __a)
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{static_assert(!is_lvalue_reference<_Hp>::value ||
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(is_lvalue_reference<_Hp>::value &&
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(is_lvalue_reference<_Tp>::value ||
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is_same<typename remove_reference<_Tp>::type,
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reference_wrapper<
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typename remove_reference<_Hp>::type
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>
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>::value)),
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"Attempted to construct a reference element in a tuple with an rvalue");}
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__tuple_leaf(const __tuple_leaf& __t) _NOEXCEPT_(is_nothrow_copy_constructible<_Hp>::value)
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: value(__t.get())
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{static_assert(!is_rvalue_reference<_Hp>::value, "Can not copy a tuple with rvalue reference member");}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(const __tuple_leaf<_Ip, _Tp>& __t)
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_NOEXCEPT_((is_nothrow_constructible<_Hp, const _Tp&>::value))
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: value(__t.get()) {}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf&
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operator=(_Tp&& __t) _NOEXCEPT_((is_nothrow_assignable<_Hp&, _Tp>::value))
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{
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value = _VSTD::forward<_Tp>(__t);
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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int swap(__tuple_leaf& __t) _NOEXCEPT_(__is_nothrow_swappable<__tuple_leaf>::value)
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{
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_VSTD::swap(*this, __t);
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return 0;
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}
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_LIBCPP_INLINE_VISIBILITY _Hp& get() _NOEXCEPT {return value;}
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_LIBCPP_INLINE_VISIBILITY const _Hp& get() const _NOEXCEPT {return value;}
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};
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template <size_t _Ip, class _Hp>
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class __tuple_leaf<_Ip, _Hp, true>
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: private _Hp
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{
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__tuple_leaf& operator=(const __tuple_leaf&);
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public:
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_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR __tuple_leaf()
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_NOEXCEPT_(is_nothrow_default_constructible<_Hp>::value) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 0>, const _Alloc&) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 1>, const _Alloc& __a)
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: _Hp(allocator_arg_t(), __a) {}
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template <class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf(integral_constant<int, 2>, const _Alloc& __a)
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: _Hp(__a) {}
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template <class _Tp,
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class = typename enable_if<is_constructible<_Hp, _Tp>::value>::type>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(_Tp&& __t) _NOEXCEPT_((is_nothrow_constructible<_Hp, _Tp>::value))
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: _Hp(_VSTD::forward<_Tp>(__t)) {}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 0>, const _Alloc&, _Tp&& __t)
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: _Hp(_VSTD::forward<_Tp>(__t)) {}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 1>, const _Alloc& __a, _Tp&& __t)
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: _Hp(allocator_arg_t(), __a, _VSTD::forward<_Tp>(__t)) {}
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template <class _Tp, class _Alloc>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(integral_constant<int, 2>, const _Alloc& __a, _Tp&& __t)
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: _Hp(_VSTD::forward<_Tp>(__t), __a) {}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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explicit __tuple_leaf(const __tuple_leaf<_Ip, _Tp>& __t)
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_NOEXCEPT_((is_nothrow_constructible<_Hp, const _Tp&>::value))
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: _Hp(__t.get()) {}
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY
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__tuple_leaf&
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operator=(_Tp&& __t) _NOEXCEPT_((is_nothrow_assignable<_Hp&, _Tp>::value))
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|
{
|
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_Hp::operator=(_VSTD::forward<_Tp>(__t));
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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int
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swap(__tuple_leaf& __t) _NOEXCEPT_(__is_nothrow_swappable<__tuple_leaf>::value)
|
|
{
|
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_VSTD::swap(*this, __t);
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return 0;
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}
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_LIBCPP_INLINE_VISIBILITY _Hp& get() _NOEXCEPT {return static_cast<_Hp&>(*this);}
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_LIBCPP_INLINE_VISIBILITY const _Hp& get() const _NOEXCEPT {return static_cast<const _Hp&>(*this);}
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};
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template <class ..._Tp>
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_LIBCPP_INLINE_VISIBILITY
|
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void __swallow(_Tp&&...) _NOEXCEPT {}
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template <bool ...> struct __all;
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|
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|
template <>
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|
struct __all<>
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|
{
|
|
static const bool value = true;
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|
};
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template <bool _B0, bool ... _Bp>
|
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struct __all<_B0, _Bp...>
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{
|
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static const bool value = _B0 && __all<_Bp...>::value;
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};
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// __tuple_impl
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template<class _Indx, class ..._Tp> struct __tuple_impl;
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template<size_t ..._Indx, class ..._Tp>
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struct __tuple_impl<__tuple_indices<_Indx...>, _Tp...>
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|
: public __tuple_leaf<_Indx, _Tp>...
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{
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_LIBCPP_INLINE_VISIBILITY
|
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_LIBCPP_CONSTEXPR __tuple_impl()
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_NOEXCEPT_(__all<is_nothrow_default_constructible<_Tp>::value...>::value) {}
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template <size_t ..._Uf, class ..._Tf,
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size_t ..._Ul, class ..._Tl, class ..._Up>
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_LIBCPP_INLINE_VISIBILITY
|
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explicit
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__tuple_impl(__tuple_indices<_Uf...>, __tuple_types<_Tf...>,
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__tuple_indices<_Ul...>, __tuple_types<_Tl...>,
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_Up&&... __u)
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_NOEXCEPT_((__all<is_nothrow_constructible<_Tf, _Up>::value...>::value &&
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__all<is_nothrow_default_constructible<_Tl>::value...>::value)) :
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__tuple_leaf<_Uf, _Tf>(_VSTD::forward<_Up>(__u))...,
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__tuple_leaf<_Ul, _Tl>()...
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{}
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template <class _Alloc, size_t ..._Uf, class ..._Tf,
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size_t ..._Ul, class ..._Tl, class ..._Up>
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_LIBCPP_INLINE_VISIBILITY
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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,
|
|
_VSTD::forward<_Up>(__u))...,
|
|
__tuple_leaf<_Ul, _Tl>(__uses_alloc_ctor<_Tl, _Alloc>(), __a)...
|
|
{}
|
|
|
|
template <class _Tuple,
|
|
class = typename enable_if
|
|
<
|
|
__tuple_constructible<_Tuple, tuple<_Tp...> >::value
|
|
>::type
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__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>(_VSTD::forward<typename tuple_element<_Indx,
|
|
typename __make_tuple_types<_Tuple>::type>::type>(_VSTD::get<_Indx>(__t)))...
|
|
{}
|
|
|
|
template <class _Alloc, class _Tuple,
|
|
class = typename enable_if
|
|
<
|
|
__tuple_convertible<_Tuple, tuple<_Tp...> >::value
|
|
>::type
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__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,
|
|
_VSTD::forward<typename tuple_element<_Indx,
|
|
typename __make_tuple_types<_Tuple>::type>::type>(_VSTD::get<_Indx>(__t)))...
|
|
{}
|
|
|
|
template <class _Tuple>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
typename enable_if
|
|
<
|
|
__tuple_assignable<_Tuple, tuple<_Tp...> >::value,
|
|
__tuple_impl&
|
|
>::type
|
|
operator=(_Tuple&& __t) _NOEXCEPT_((__all<is_nothrow_assignable<_Tp&, typename tuple_element<_Indx,
|
|
typename __make_tuple_types<_Tuple>::type>::type>::value...>::value))
|
|
{
|
|
__swallow(__tuple_leaf<_Indx, _Tp>::operator=(_VSTD::forward<typename tuple_element<_Indx,
|
|
typename __make_tuple_types<_Tuple>::type>::type>(_VSTD::get<_Indx>(__t)))...);
|
|
return *this;
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__tuple_impl&
|
|
operator=(const __tuple_impl& __t) _NOEXCEPT_((__all<is_nothrow_copy_assignable<_Tp>::value...>::value))
|
|
{
|
|
__swallow(__tuple_leaf<_Indx, _Tp>::operator=(static_cast<const __tuple_leaf<_Indx, _Tp>&>(__t).get())...);
|
|
return *this;
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void swap(__tuple_impl& __t)
|
|
_NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value)
|
|
{
|
|
__swallow(__tuple_leaf<_Indx, _Tp>::swap(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t))...);
|
|
}
|
|
};
|
|
|
|
template <class ..._Tp>
|
|
class _LIBCPP_TYPE_VIS tuple
|
|
{
|
|
typedef __tuple_impl<typename __make_tuple_indices<sizeof...(_Tp)>::type, _Tp...> base;
|
|
|
|
base base_;
|
|
|
|
template <size_t _Jp, class ..._Up> friend
|
|
typename tuple_element<_Jp, tuple<_Up...> >::type& get(tuple<_Up...>&) _NOEXCEPT;
|
|
template <size_t _Jp, class ..._Up> friend
|
|
const typename tuple_element<_Jp, tuple<_Up...> >::type& get(const tuple<_Up...>&) _NOEXCEPT;
|
|
template <size_t _Jp, class ..._Up> friend
|
|
typename tuple_element<_Jp, tuple<_Up...> >::type&& get(tuple<_Up...>&&) _NOEXCEPT;
|
|
public:
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_LIBCPP_CONSTEXPR tuple()
|
|
_NOEXCEPT_(__all<is_nothrow_default_constructible<_Tp>::value...>::value) {}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit tuple(const _Tp& ... __t) _NOEXCEPT_((__all<is_nothrow_copy_constructible<_Tp>::value...>::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>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
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...
|
|
) {}
|
|
|
|
template <class ..._Up,
|
|
typename enable_if
|
|
<
|
|
sizeof...(_Up) <= sizeof...(_Tp) &&
|
|
__tuple_convertible
|
|
<
|
|
tuple<_Up...>,
|
|
typename __make_tuple_types<tuple,
|
|
sizeof...(_Up) < sizeof...(_Tp) ?
|
|
sizeof...(_Up) :
|
|
sizeof...(_Tp)>::type
|
|
>::value,
|
|
bool
|
|
>::type = false
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple(_Up&&... __u)
|
|
_NOEXCEPT_((
|
|
is_nothrow_constructible<
|
|
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,
|
|
_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(),
|
|
_VSTD::forward<_Up>(__u)...) {}
|
|
|
|
template <class ..._Up,
|
|
typename enable_if
|
|
<
|
|
sizeof...(_Up) <= sizeof...(_Tp) &&
|
|
__tuple_constructible
|
|
<
|
|
tuple<_Up...>,
|
|
typename __make_tuple_types<tuple,
|
|
sizeof...(_Up) < sizeof...(_Tp) ?
|
|
sizeof...(_Up) :
|
|
sizeof...(_Tp)>::type
|
|
>::value &&
|
|
!__tuple_convertible
|
|
<
|
|
tuple<_Up...>,
|
|
typename __make_tuple_types<tuple,
|
|
sizeof...(_Up) < sizeof...(_Tp) ?
|
|
sizeof...(_Up) :
|
|
sizeof...(_Tp)>::type
|
|
>::value,
|
|
bool
|
|
>::type =false
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit
|
|
tuple(_Up&&... __u)
|
|
_NOEXCEPT_((
|
|
is_nothrow_constructible<
|
|
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,
|
|
_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(),
|
|
_VSTD::forward<_Up>(__u)...) {}
|
|
|
|
template <class _Alloc, class ..._Up,
|
|
class = typename enable_if
|
|
<
|
|
sizeof...(_Up) <= sizeof...(_Tp) &&
|
|
__tuple_convertible
|
|
<
|
|
tuple<_Up...>,
|
|
typename __make_tuple_types<tuple,
|
|
sizeof...(_Up) < sizeof...(_Tp) ?
|
|
sizeof...(_Up) :
|
|
sizeof...(_Tp)>::type
|
|
>::value
|
|
>::type
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
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(),
|
|
_VSTD::forward<_Up>(__u)...) {}
|
|
|
|
template <class _Tuple,
|
|
typename enable_if
|
|
<
|
|
__tuple_convertible<_Tuple, tuple>::value,
|
|
bool
|
|
>::type = false
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple(_Tuple&& __t) _NOEXCEPT_((is_nothrow_constructible<base, _Tuple>::value))
|
|
: base_(_VSTD::forward<_Tuple>(__t)) {}
|
|
|
|
template <class _Tuple,
|
|
typename enable_if
|
|
<
|
|
__tuple_constructible<_Tuple, tuple>::value &&
|
|
!__tuple_convertible<_Tuple, tuple>::value,
|
|
bool
|
|
>::type = false
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit
|
|
tuple(_Tuple&& __t) _NOEXCEPT_((is_nothrow_constructible<base, _Tuple>::value))
|
|
: base_(_VSTD::forward<_Tuple>(__t)) {}
|
|
|
|
template <class _Alloc, class _Tuple,
|
|
class = typename enable_if
|
|
<
|
|
__tuple_convertible<_Tuple, tuple>::value
|
|
>::type
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple(allocator_arg_t, const _Alloc& __a, _Tuple&& __t)
|
|
: base_(allocator_arg_t(), __a, _VSTD::forward<_Tuple>(__t)) {}
|
|
|
|
template <class _Tuple,
|
|
class = typename enable_if
|
|
<
|
|
__tuple_assignable<_Tuple, tuple>::value
|
|
>::type
|
|
>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple&
|
|
operator=(_Tuple&& __t) _NOEXCEPT_((is_nothrow_assignable<base&, _Tuple>::value))
|
|
{
|
|
base_.operator=(_VSTD::forward<_Tuple>(__t));
|
|
return *this;
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void swap(tuple& __t) _NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value)
|
|
{base_.swap(__t.base_);}
|
|
};
|
|
|
|
template <>
|
|
class _LIBCPP_TYPE_VIS tuple<>
|
|
{
|
|
public:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_LIBCPP_CONSTEXPR tuple() _NOEXCEPT {}
|
|
template <class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple(allocator_arg_t, const _Alloc&) _NOEXCEPT {}
|
|
template <class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple(allocator_arg_t, const _Alloc&, const tuple&) _NOEXCEPT {}
|
|
template <class _Up>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple(array<_Up, 0>) _NOEXCEPT {}
|
|
template <class _Alloc, class _Up>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
tuple(allocator_arg_t, const _Alloc&, array<_Up, 0>) _NOEXCEPT {}
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void swap(tuple&) _NOEXCEPT {}
|
|
};
|
|
|
|
template <class ..._Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
typename enable_if
|
|
<
|
|
__all<__is_swappable<_Tp>::value...>::value,
|
|
void
|
|
>::type
|
|
swap(tuple<_Tp...>& __t, tuple<_Tp...>& __u)
|
|
_NOEXCEPT_(__all<__is_nothrow_swappable<_Tp>::value...>::value)
|
|
{__t.swap(__u);}
|
|
|
|
// get
|
|
|
|
template <size_t _Ip, class ..._Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
typename tuple_element<_Ip, tuple<_Tp...> >::type&
|
|
get(tuple<_Tp...>& __t) _NOEXCEPT
|
|
{
|
|
typedef 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_INLINE_VISIBILITY
|
|
const typename tuple_element<_Ip, tuple<_Tp...> >::type&
|
|
get(const tuple<_Tp...>& __t) _NOEXCEPT
|
|
{
|
|
typedef 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_INLINE_VISIBILITY
|
|
typename tuple_element<_Ip, tuple<_Tp...> >::type&&
|
|
get(tuple<_Tp...>&& __t) _NOEXCEPT
|
|
{
|
|
typedef typename tuple_element<_Ip, tuple<_Tp...> >::type type;
|
|
return static_cast<type&&>(
|
|
static_cast<__tuple_leaf<_Ip, type>&&>(__t.base_).get());
|
|
}
|
|
|
|
// tie
|
|
|
|
template <class ..._Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
tuple<_Tp&...>
|
|
tie(_Tp&... __t) _NOEXCEPT
|
|
{
|
|
return tuple<_Tp&...>(__t...);
|
|
}
|
|
|
|
template <class _Up>
|
|
struct __ignore_t
|
|
{
|
|
template <class _Tp>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
const __ignore_t& operator=(_Tp&&) const {return *this;}
|
|
};
|
|
|
|
namespace { const __ignore_t<unsigned char> ignore = __ignore_t<unsigned char>(); }
|
|
|
|
template <class _Tp> class _LIBCPP_TYPE_VIS reference_wrapper;
|
|
|
|
template <class _Tp>
|
|
struct ___make_tuple_return
|
|
{
|
|
typedef _Tp type;
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct ___make_tuple_return<reference_wrapper<_Tp> >
|
|
{
|
|
typedef _Tp& type;
|
|
};
|
|
|
|
template <class _Tp>
|
|
struct __make_tuple_return
|
|
{
|
|
typedef typename ___make_tuple_return<typename decay<_Tp>::type>::type type;
|
|
};
|
|
|
|
template <class... _Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
tuple<typename __make_tuple_return<_Tp>::type...>
|
|
make_tuple(_Tp&&... __t)
|
|
{
|
|
return tuple<typename __make_tuple_return<_Tp>::type...>(_VSTD::forward<_Tp>(__t)...);
|
|
}
|
|
|
|
template <class... _Tp>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
tuple<_Tp&&...>
|
|
forward_as_tuple(_Tp&&... __t) _NOEXCEPT
|
|
{
|
|
return tuple<_Tp&&...>(_VSTD::forward<_Tp>(__t)...);
|
|
}
|
|
|
|
template <size_t _Ip>
|
|
struct __tuple_equal
|
|
{
|
|
template <class _Tp, class _Up>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
bool operator()(const _Tp& __x, const _Up& __y)
|
|
{
|
|
return __tuple_equal<_Ip - 1>()(__x, __y) && get<_Ip-1>(__x) == get<_Ip-1>(__y);
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct __tuple_equal<0>
|
|
{
|
|
template <class _Tp, class _Up>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
bool operator()(const _Tp&, const _Up&)
|
|
{
|
|
return true;
|
|
}
|
|
};
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator==(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __tuple_equal<sizeof...(_Tp)>()(__x, __y);
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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_INLINE_VISIBILITY
|
|
bool operator()(const _Tp& __x, const _Up& __y)
|
|
{
|
|
return __tuple_less<_Ip-1>()(__x, __y) ||
|
|
(!__tuple_less<_Ip-1>()(__y, __x) && get<_Ip-1>(__x) < get<_Ip-1>(__y));
|
|
}
|
|
};
|
|
|
|
template <>
|
|
struct __tuple_less<0>
|
|
{
|
|
template <class _Tp, class _Up>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
bool operator()(const _Tp&, const _Up&)
|
|
{
|
|
return false;
|
|
}
|
|
};
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator<(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __tuple_less<sizeof...(_Tp)>()(__x, __y);
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator>(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return __y < __x;
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator>=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return !(__x < __y);
|
|
}
|
|
|
|
template <class ..._Tp, class ..._Up>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
operator<=(const tuple<_Tp...>& __x, const tuple<_Up...>& __y)
|
|
{
|
|
return !(__y < __x);
|
|
}
|
|
|
|
// 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 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>
|
|
{
|
|
typedef typename __tuple_cat_type<tuple<_Types...>,
|
|
typename __make_tuple_types<typename remove_reference<_Tuple0>::type>::type>::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<typename remove_reference<_Tuple0>::type>::type
|
|
>::type,
|
|
__tuple_like<typename remove_reference<_Tuple1>::type>::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<typename remove_reference<_Tuple0>::type>::value, _Tuple0,
|
|
_Tuples...>
|
|
{
|
|
};
|
|
|
|
template <>
|
|
struct __tuple_cat_return<>
|
|
{
|
|
typedef tuple<> type;
|
|
};
|
|
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 typename remove_reference<_Tuple0>::type _T0;
|
|
typedef tuple<_Types..., typename __apply_cv<_Tuple0,
|
|
typename tuple_element<_I0, _T0>::type>::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..., typename __apply_cv<_Tuple0,
|
|
typename tuple_element<_I0,
|
|
typename remove_reference<_Tuple0>::type>::type>::type&&...>,
|
|
typename __make_tuple_indices<tuple_size<typename
|
|
remove_reference<_Tuple1>::type>::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<typename remove_reference<_Tuple0>::type>::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_INLINE_VISIBILITY
|
|
typename __tuple_cat_return_ref<tuple<_Types...>&&, _Tuple0&&>::type
|
|
operator()(tuple<_Types...> __t, _Tuple0&& __t0)
|
|
{
|
|
return _VSTD::forward_as_tuple(_VSTD::forward<_Types>(get<_I0>(__t))...,
|
|
get<_J0>(_VSTD::forward<_Tuple0>(__t0))...);
|
|
}
|
|
|
|
template <class _Tuple0, class _Tuple1, class ..._Tuples>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
typename __tuple_cat_return_ref<tuple<_Types...>&&, _Tuple0&&, _Tuple1&&, _Tuples&&...>::type
|
|
operator()(tuple<_Types...> __t, _Tuple0&& __t0, _Tuple1&& __t1, _Tuples&& ...__tpls)
|
|
{
|
|
typedef typename remove_reference<_Tuple0>::type _T0;
|
|
typedef typename remove_reference<_Tuple1>::type _T1;
|
|
return __tuple_cat<
|
|
tuple<_Types..., typename __apply_cv<_Tuple0, typename tuple_element<_J0, _T0>::type>::type&&...>,
|
|
typename __make_tuple_indices<sizeof ...(_Types) + tuple_size<_T0>::value>::type,
|
|
typename __make_tuple_indices<tuple_size<_T1>::value>::type>()
|
|
(_VSTD::forward_as_tuple(
|
|
_VSTD::forward<_Types>(get<_I0>(__t))...,
|
|
get<_J0>(_VSTD::forward<_Tuple0>(__t0))...
|
|
),
|
|
_VSTD::forward<_Tuple1>(__t1),
|
|
_VSTD::forward<_Tuples>(__tpls)...);
|
|
}
|
|
};
|
|
|
|
template <class _Tuple0, class... _Tuples>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
typename __tuple_cat_return<_Tuple0, _Tuples...>::type
|
|
tuple_cat(_Tuple0&& __t0, _Tuples&&... __tpls)
|
|
{
|
|
typedef typename remove_reference<_Tuple0>::type _T0;
|
|
return __tuple_cat<tuple<>, __tuple_indices<>,
|
|
typename __make_tuple_indices<tuple_size<_T0>::value>::type>()
|
|
(tuple<>(), _VSTD::forward<_Tuple0>(__t0),
|
|
_VSTD::forward<_Tuples>(__tpls)...);
|
|
}
|
|
|
|
template <class ..._Tp, class _Alloc>
|
|
struct _LIBCPP_TYPE_VIS uses_allocator<tuple<_Tp...>, _Alloc>
|
|
: true_type {};
|
|
|
|
template <class _T1, class _T2>
|
|
template <class... _Args1, class... _Args2, size_t ..._I1, size_t ..._I2>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
pair<_T1, _T2>::pair(piecewise_construct_t,
|
|
tuple<_Args1...>& __first_args, tuple<_Args2...>& __second_args,
|
|
__tuple_indices<_I1...>, __tuple_indices<_I2...>)
|
|
: first(_VSTD::forward<_Args1>(get<_I1>( __first_args))...),
|
|
second(_VSTD::forward<_Args2>(get<_I2>(__second_args))...)
|
|
{
|
|
}
|
|
|
|
#endif // _LIBCPP_HAS_NO_VARIADICS
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_TUPLE
|