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Diffstat (limited to 'contrib/libc++/include/__hash_table')
| -rw-r--r-- | contrib/libc++/include/__hash_table | 1920 |
1 files changed, 1920 insertions, 0 deletions
diff --git a/contrib/libc++/include/__hash_table b/contrib/libc++/include/__hash_table new file mode 100644 index 0000000..fad4e0e --- /dev/null +++ b/contrib/libc++/include/__hash_table @@ -0,0 +1,1920 @@ +// -*- C++ -*- +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef _LIBCPP__HASH_TABLE +#define _LIBCPP__HASH_TABLE + +#include <__config> +#include <initializer_list> +#include <memory> +#include <iterator> +#include <algorithm> +#include <cmath> + +#include <__undef_min_max> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +_LIBCPP_VISIBLE +size_t __next_prime(size_t __n); + +template <class _NodePtr> +struct __hash_node_base +{ + typedef __hash_node_base __first_node; + // typedef _NodePtr pointer; + + _NodePtr __next_; + + _LIBCPP_INLINE_VISIBILITY __hash_node_base() _NOEXCEPT : __next_(nullptr) {} +}; + +template <class _Tp, class _VoidPtr> +struct __hash_node + : public __hash_node_base + < + typename pointer_traits<_VoidPtr>::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind<__hash_node<_Tp, _VoidPtr> > +#else + rebind<__hash_node<_Tp, _VoidPtr> >::other +#endif + > +{ + typedef _Tp value_type; + + size_t __hash_; + value_type __value_; +}; + +template <class _Tp, class _Hash, class _Equal, class _Alloc> class __hash_table; +template <class _ConstNodePtr> class __hash_const_iterator; +template <class _HashIterator> class __hash_map_iterator; +template <class _HashIterator> class __hash_map_const_iterator; +template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc> + class _LIBCPP_VISIBLE unordered_map; + +template <class _NodePtr> +class _LIBCPP_VISIBLE __hash_iterator +{ + typedef _NodePtr __node_pointer; + + __node_pointer __node_; + +public: + typedef forward_iterator_tag iterator_category; + typedef typename pointer_traits<__node_pointer>::element_type::value_type value_type; + typedef typename pointer_traits<__node_pointer>::difference_type difference_type; + typedef value_type& reference; + typedef typename pointer_traits<__node_pointer>::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind<value_type> +#else + rebind<value_type>::other +#endif + pointer; + + _LIBCPP_INLINE_VISIBILITY __hash_iterator() _NOEXCEPT {} + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const {return __node_->__value_;} + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const {return _VSTD::addressof(__node_->__value_);} + + _LIBCPP_INLINE_VISIBILITY + __hash_iterator& operator++() + { + __node_ = __node_->__next_; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_iterator operator++(int) + { + __hash_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_iterator& __x, const __hash_iterator& __y) + {return __x.__node_ == __y.__node_;} + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_iterator& __x, const __hash_iterator& __y) + {return __x.__node_ != __y.__node_;} + +private: + _LIBCPP_INLINE_VISIBILITY + __hash_iterator(__node_pointer __node) _NOEXCEPT + : __node_(__node) + {} + + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_VISIBLE __hash_const_iterator; + template <class> friend class _LIBCPP_VISIBLE __hash_map_iterator; + template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_map; + template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_multimap; +}; + +template <class _ConstNodePtr> +class _LIBCPP_VISIBLE __hash_const_iterator +{ + typedef _ConstNodePtr __node_pointer; + + __node_pointer __node_; + + typedef typename remove_const< + typename pointer_traits<__node_pointer>::element_type + >::type __node; + +public: + typedef forward_iterator_tag iterator_category; + typedef typename __node::value_type value_type; + typedef typename pointer_traits<__node_pointer>::difference_type difference_type; + typedef const value_type& reference; + typedef typename pointer_traits<__node_pointer>::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind<const value_type> +#else + rebind<const value_type>::other +#endif + pointer; + typedef typename pointer_traits<__node_pointer>::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind<__node> +#else + rebind<__node>::other +#endif + __non_const_node_pointer; + typedef __hash_iterator<__non_const_node_pointer> __non_const_iterator; + + _LIBCPP_INLINE_VISIBILITY __hash_const_iterator() _NOEXCEPT {} + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator(const __non_const_iterator& __x) _NOEXCEPT + : __node_(__x.__node_) + {} + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const {return __node_->__value_;} + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const {return _VSTD::addressof(__node_->__value_);} + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator& operator++() + { + __node_ = __node_->__next_; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator operator++(int) + { + __hash_const_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_const_iterator& __x, const __hash_const_iterator& __y) + {return __x.__node_ == __y.__node_;} + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_const_iterator& __x, const __hash_const_iterator& __y) + {return __x.__node_ != __y.__node_;} + +private: + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator(__node_pointer __node) _NOEXCEPT + : __node_(__node) + {} + + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_VISIBLE __hash_map_const_iterator; + template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_map; + template <class, class, class, class, class> friend class _LIBCPP_VISIBLE unordered_multimap; +}; + +template <class _ConstNodePtr> class _LIBCPP_VISIBLE __hash_const_local_iterator; + +template <class _NodePtr> +class _LIBCPP_VISIBLE __hash_local_iterator +{ + typedef _NodePtr __node_pointer; + + __node_pointer __node_; + size_t __bucket_; + size_t __bucket_count_; + + typedef pointer_traits<__node_pointer> __pointer_traits; +public: + typedef forward_iterator_tag iterator_category; + typedef typename __pointer_traits::element_type::value_type value_type; + typedef typename __pointer_traits::difference_type difference_type; + typedef value_type& reference; + typedef typename __pointer_traits::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind<value_type> +#else + rebind<value_type>::other +#endif + pointer; + + _LIBCPP_INLINE_VISIBILITY __hash_local_iterator() _NOEXCEPT {} + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const {return __node_->__value_;} + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const {return &__node_->__value_;} + + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator& operator++() + { + __node_ = __node_->__next_; + if (__node_ != nullptr && __node_->__hash_ % __bucket_count_ != __bucket_) + __node_ = nullptr; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator operator++(int) + { + __hash_local_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_local_iterator& __x, const __hash_local_iterator& __y) + {return __x.__node_ == __y.__node_;} + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_local_iterator& __x, const __hash_local_iterator& __y) + {return __x.__node_ != __y.__node_;} + +private: + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator(__node_pointer __node, size_t __bucket, + size_t __bucket_count) _NOEXCEPT + : __node_(__node), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + if (__node_ != nullptr) + __node_ = __node_->__next_; + } + + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_VISIBLE __hash_const_local_iterator; + template <class> friend class _LIBCPP_VISIBLE __hash_map_iterator; +}; + +template <class _ConstNodePtr> +class _LIBCPP_VISIBLE __hash_const_local_iterator +{ + typedef _ConstNodePtr __node_pointer; + + __node_pointer __node_; + size_t __bucket_; + size_t __bucket_count_; + + typedef pointer_traits<__node_pointer> __pointer_traits; + typedef typename __pointer_traits::element_type __node; + typedef typename remove_const<__node>::type __non_const_node; + typedef typename pointer_traits<__node_pointer>::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind<__non_const_node> +#else + rebind<__non_const_node>::other +#endif + __non_const_node_pointer; + typedef __hash_local_iterator<__non_const_node_pointer> + __non_const_iterator; +public: + typedef forward_iterator_tag iterator_category; + typedef typename remove_const< + typename __pointer_traits::element_type::value_type + >::type value_type; + typedef typename __pointer_traits::difference_type difference_type; + typedef const value_type& reference; + typedef typename __pointer_traits::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind<const value_type> +#else + rebind<const value_type>::other +#endif + pointer; + + _LIBCPP_INLINE_VISIBILITY __hash_const_local_iterator() _NOEXCEPT {} + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator(const __non_const_iterator& __x) _NOEXCEPT + : __node_(__x.__node_), + __bucket_(__x.__bucket_), + __bucket_count_(__x.__bucket_count_) + {} + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const {return __node_->__value_;} + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const {return &__node_->__value_;} + + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator& operator++() + { + __node_ = __node_->__next_; + if (__node_ != nullptr && __node_->__hash_ % __bucket_count_ != __bucket_) + __node_ = nullptr; + return *this; + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator operator++(int) + { + __hash_const_local_iterator __t(*this); + ++(*this); + return __t; + } + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(const __hash_const_local_iterator& __x, const __hash_const_local_iterator& __y) + {return __x.__node_ == __y.__node_;} + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(const __hash_const_local_iterator& __x, const __hash_const_local_iterator& __y) + {return __x.__node_ != __y.__node_;} + +private: + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator(__node_pointer __node, size_t __bucket, + size_t __bucket_count) _NOEXCEPT + : __node_(__node), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + if (__node_ != nullptr) + __node_ = __node_->__next_; + } + + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_VISIBLE __hash_map_const_iterator; +}; + +template <class _Alloc> +class __bucket_list_deallocator +{ + typedef _Alloc allocator_type; + typedef allocator_traits<allocator_type> __alloc_traits; + typedef typename __alloc_traits::size_type size_type; + + __compressed_pair<size_type, allocator_type> __data_; +public: + typedef typename __alloc_traits::pointer pointer; + + _LIBCPP_INLINE_VISIBILITY + __bucket_list_deallocator() + _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) + : __data_(0) {} + + _LIBCPP_INLINE_VISIBILITY + __bucket_list_deallocator(const allocator_type& __a, size_type __size) + _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) + : __data_(__size, __a) {} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + + _LIBCPP_INLINE_VISIBILITY + __bucket_list_deallocator(__bucket_list_deallocator&& __x) + _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) + : __data_(_VSTD::move(__x.__data_)) + { + __x.size() = 0; + } + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + + _LIBCPP_INLINE_VISIBILITY + size_type& size() _NOEXCEPT {return __data_.first();} + _LIBCPP_INLINE_VISIBILITY + size_type size() const _NOEXCEPT {return __data_.first();} + + _LIBCPP_INLINE_VISIBILITY + allocator_type& __alloc() _NOEXCEPT {return __data_.second();} + _LIBCPP_INLINE_VISIBILITY + const allocator_type& __alloc() const _NOEXCEPT {return __data_.second();} + + _LIBCPP_INLINE_VISIBILITY + void operator()(pointer __p) _NOEXCEPT + { + __alloc_traits::deallocate(__alloc(), __p, size()); + } +}; + +template <class _Alloc> class __hash_map_node_destructor; + +template <class _Alloc> +class __hash_node_destructor +{ + typedef _Alloc allocator_type; + typedef allocator_traits<allocator_type> __alloc_traits; + typedef typename __alloc_traits::value_type::value_type value_type; +public: + typedef typename __alloc_traits::pointer pointer; +private: + + allocator_type& __na_; + + __hash_node_destructor& operator=(const __hash_node_destructor&); + +public: + bool __value_constructed; + + _LIBCPP_INLINE_VISIBILITY + explicit __hash_node_destructor(allocator_type& __na, + bool __constructed = false) _NOEXCEPT + : __na_(__na), + __value_constructed(__constructed) + {} + + _LIBCPP_INLINE_VISIBILITY + void operator()(pointer __p) _NOEXCEPT + { + if (__value_constructed) + __alloc_traits::destroy(__na_, _VSTD::addressof(__p->__value_)); + if (__p) + __alloc_traits::deallocate(__na_, __p, 1); + } + + template <class> friend class __hash_map_node_destructor; +}; + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +class __hash_table +{ +public: + typedef _Tp value_type; + typedef _Hash hasher; + typedef _Equal key_equal; + typedef _Alloc allocator_type; + +private: + typedef allocator_traits<allocator_type> __alloc_traits; +public: + typedef value_type& reference; + typedef const value_type& const_reference; + typedef typename __alloc_traits::pointer pointer; + typedef typename __alloc_traits::const_pointer const_pointer; + typedef typename __alloc_traits::size_type size_type; + typedef typename __alloc_traits::difference_type difference_type; +public: + // Create __node + typedef __hash_node<value_type, typename __alloc_traits::void_pointer> __node; + typedef typename __alloc_traits::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind_alloc<__node> +#else + rebind_alloc<__node>::other +#endif + __node_allocator; + typedef allocator_traits<__node_allocator> __node_traits; + typedef typename __node_traits::pointer __node_pointer; + typedef typename __node_traits::const_pointer __node_const_pointer; + typedef __hash_node_base<__node_pointer> __first_node; + +private: + + typedef typename __node_traits::template +#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES + rebind_alloc<__node_pointer> +#else + rebind_alloc<__node_pointer>::other +#endif + __pointer_allocator; + typedef __bucket_list_deallocator<__pointer_allocator> __bucket_list_deleter; + typedef unique_ptr<__node_pointer[], __bucket_list_deleter> __bucket_list; + typedef allocator_traits<__pointer_allocator> __pointer_alloc_traits; + typedef typename __bucket_list_deleter::pointer __node_pointer_pointer; + + // --- Member data begin --- + __bucket_list __bucket_list_; + __compressed_pair<__first_node, __node_allocator> __p1_; + __compressed_pair<size_type, hasher> __p2_; + __compressed_pair<float, key_equal> __p3_; + // --- Member data end --- + + _LIBCPP_INLINE_VISIBILITY + size_type& size() _NOEXCEPT {return __p2_.first();} +public: + _LIBCPP_INLINE_VISIBILITY + size_type size() const _NOEXCEPT {return __p2_.first();} + + _LIBCPP_INLINE_VISIBILITY + hasher& hash_function() _NOEXCEPT {return __p2_.second();} + _LIBCPP_INLINE_VISIBILITY + const hasher& hash_function() const _NOEXCEPT {return __p2_.second();} + + _LIBCPP_INLINE_VISIBILITY + float& max_load_factor() _NOEXCEPT {return __p3_.first();} + _LIBCPP_INLINE_VISIBILITY + float max_load_factor() const _NOEXCEPT {return __p3_.first();} + + _LIBCPP_INLINE_VISIBILITY + key_equal& key_eq() _NOEXCEPT {return __p3_.second();} + _LIBCPP_INLINE_VISIBILITY + const key_equal& key_eq() const _NOEXCEPT {return __p3_.second();} + + _LIBCPP_INLINE_VISIBILITY + __node_allocator& __node_alloc() _NOEXCEPT {return __p1_.second();} + _LIBCPP_INLINE_VISIBILITY + const __node_allocator& __node_alloc() const _NOEXCEPT + {return __p1_.second();} + +public: + typedef __hash_iterator<__node_pointer> iterator; + typedef __hash_const_iterator<__node_const_pointer> const_iterator; + typedef __hash_local_iterator<__node_pointer> local_iterator; + typedef __hash_const_local_iterator<__node_const_pointer> const_local_iterator; + + __hash_table() + _NOEXCEPT_( + is_nothrow_default_constructible<__bucket_list>::value && + is_nothrow_default_constructible<__first_node>::value && + is_nothrow_default_constructible<__node_allocator>::value && + is_nothrow_default_constructible<hasher>::value && + is_nothrow_default_constructible<key_equal>::value); + __hash_table(const hasher& __hf, const key_equal& __eql); + __hash_table(const hasher& __hf, const key_equal& __eql, + const allocator_type& __a); + explicit __hash_table(const allocator_type& __a); + __hash_table(const __hash_table& __u); + __hash_table(const __hash_table& __u, const allocator_type& __a); +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + __hash_table(__hash_table&& __u) + _NOEXCEPT_( + is_nothrow_move_constructible<__bucket_list>::value && + is_nothrow_move_constructible<__first_node>::value && + is_nothrow_move_constructible<__node_allocator>::value && + is_nothrow_move_constructible<hasher>::value && + is_nothrow_move_constructible<key_equal>::value); + __hash_table(__hash_table&& __u, const allocator_type& __a); +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + ~__hash_table(); + + __hash_table& operator=(const __hash_table& __u); +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + __hash_table& operator=(__hash_table&& __u) + _NOEXCEPT_( + __node_traits::propagate_on_container_move_assignment::value && + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable<hasher>::value && + is_nothrow_move_assignable<key_equal>::value); +#endif + template <class _InputIterator> + void __assign_unique(_InputIterator __first, _InputIterator __last); + template <class _InputIterator> + void __assign_multi(_InputIterator __first, _InputIterator __last); + + _LIBCPP_INLINE_VISIBILITY + size_type max_size() const _NOEXCEPT + { + return allocator_traits<__pointer_allocator>::max_size( + __bucket_list_.get_deleter().__alloc()); + } + + pair<iterator, bool> __node_insert_unique(__node_pointer __nd); + iterator __node_insert_multi(__node_pointer __nd); + iterator __node_insert_multi(const_iterator __p, + __node_pointer __nd); + +#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + template <class... _Args> + pair<iterator, bool> __emplace_unique(_Args&&... __args); + template <class... _Args> + iterator __emplace_multi(_Args&&... __args); + template <class... _Args> + iterator __emplace_hint_multi(const_iterator __p, _Args&&... __args); +#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS) + + pair<iterator, bool> __insert_unique(const value_type& __x); + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + template <class _Pp> + pair<iterator, bool> __insert_unique(_Pp&& __x); +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + template <class _Pp> + iterator __insert_multi(_Pp&& __x); + template <class _Pp> + iterator __insert_multi(const_iterator __p, _Pp&& __x); +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES + iterator __insert_multi(const value_type& __x); + iterator __insert_multi(const_iterator __p, const value_type& __x); +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + + void clear() _NOEXCEPT; + void rehash(size_type __n); + _LIBCPP_INLINE_VISIBILITY void reserve(size_type __n) + {rehash(static_cast<size_type>(ceil(__n / max_load_factor())));} + + _LIBCPP_INLINE_VISIBILITY + size_type bucket_count() const _NOEXCEPT + { + return __bucket_list_.get_deleter().size(); + } + + iterator begin() _NOEXCEPT; + iterator end() _NOEXCEPT; + const_iterator begin() const _NOEXCEPT; + const_iterator end() const _NOEXCEPT; + + template <class _Key> + _LIBCPP_INLINE_VISIBILITY + size_type bucket(const _Key& __k) const + {return hash_function()(__k) % bucket_count();} + + template <class _Key> + iterator find(const _Key& __x); + template <class _Key> + const_iterator find(const _Key& __x) const; + + typedef __hash_node_destructor<__node_allocator> _Dp; + typedef unique_ptr<__node, _Dp> __node_holder; + + iterator erase(const_iterator __p); + iterator erase(const_iterator __first, const_iterator __last); + template <class _Key> + size_type __erase_unique(const _Key& __k); + template <class _Key> + size_type __erase_multi(const _Key& __k); + __node_holder remove(const_iterator __p) _NOEXCEPT; + + template <class _Key> + size_type __count_unique(const _Key& __k) const; + template <class _Key> + size_type __count_multi(const _Key& __k) const; + + template <class _Key> + pair<iterator, iterator> + __equal_range_unique(const _Key& __k); + template <class _Key> + pair<const_iterator, const_iterator> + __equal_range_unique(const _Key& __k) const; + + template <class _Key> + pair<iterator, iterator> + __equal_range_multi(const _Key& __k); + template <class _Key> + pair<const_iterator, const_iterator> + __equal_range_multi(const _Key& __k) const; + + void swap(__hash_table& __u) + _NOEXCEPT_( + (!allocator_traits<__pointer_allocator>::propagate_on_container_swap::value || + __is_nothrow_swappable<__pointer_allocator>::value) && + (!__node_traits::propagate_on_container_swap::value || + __is_nothrow_swappable<__node_allocator>::value) && + __is_nothrow_swappable<hasher>::value && + __is_nothrow_swappable<key_equal>::value); + + _LIBCPP_INLINE_VISIBILITY + size_type max_bucket_count() const _NOEXCEPT + {return __bucket_list_.get_deleter().__alloc().max_size();} + size_type bucket_size(size_type __n) const; + _LIBCPP_INLINE_VISIBILITY float load_factor() const _NOEXCEPT + { + size_type __bc = bucket_count(); + return __bc != 0 ? (float)size() / __bc : 0.f; + } + _LIBCPP_INLINE_VISIBILITY void max_load_factor(float __mlf) _NOEXCEPT + {max_load_factor() = _VSTD::max(__mlf, load_factor());} + + _LIBCPP_INLINE_VISIBILITY local_iterator begin(size_type __n) + {return local_iterator(__bucket_list_[__n], __n, bucket_count());} + _LIBCPP_INLINE_VISIBILITY local_iterator end(size_type __n) + {return local_iterator(nullptr, __n, bucket_count());} + _LIBCPP_INLINE_VISIBILITY const_local_iterator cbegin(size_type __n) const + {return const_local_iterator(__bucket_list_[__n], __n, bucket_count());} + _LIBCPP_INLINE_VISIBILITY const_local_iterator cend(size_type __n) const + {return const_local_iterator(nullptr, __n, bucket_count());} +private: + void __rehash(size_type __n); + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES +#ifndef _LIBCPP_HAS_NO_VARIADICS + template <class ..._Args> + __node_holder __construct_node(_Args&& ...__args); +#endif // _LIBCPP_HAS_NO_VARIADICS + __node_holder __construct_node(value_type&& __v, size_t __hash); +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES + __node_holder __construct_node(const value_type& __v); +#endif + __node_holder __construct_node(const value_type& __v, size_t __hash); + + _LIBCPP_INLINE_VISIBILITY + void __copy_assign_alloc(const __hash_table& __u) + {__copy_assign_alloc(__u, integral_constant<bool, + __node_traits::propagate_on_container_copy_assignment::value>());} + void __copy_assign_alloc(const __hash_table& __u, true_type); + _LIBCPP_INLINE_VISIBILITY + void __copy_assign_alloc(const __hash_table&, false_type) {} + + void __move_assign(__hash_table& __u, false_type); + void __move_assign(__hash_table& __u, true_type) + _NOEXCEPT_( + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable<hasher>::value && + is_nothrow_move_assignable<key_equal>::value); + _LIBCPP_INLINE_VISIBILITY + void __move_assign_alloc(__hash_table& __u) + _NOEXCEPT_( + !__node_traits::propagate_on_container_move_assignment::value || + (is_nothrow_move_assignable<__pointer_allocator>::value && + is_nothrow_move_assignable<__node_allocator>::value)) + {__move_assign_alloc(__u, integral_constant<bool, + __node_traits::propagate_on_container_move_assignment::value>());} + _LIBCPP_INLINE_VISIBILITY + void __move_assign_alloc(__hash_table& __u, true_type) + _NOEXCEPT_( + is_nothrow_move_assignable<__pointer_allocator>::value && + is_nothrow_move_assignable<__node_allocator>::value) + { + __bucket_list_.get_deleter().__alloc() = + _VSTD::move(__u.__bucket_list_.get_deleter().__alloc()); + __node_alloc() = _VSTD::move(__u.__node_alloc()); + } + _LIBCPP_INLINE_VISIBILITY + void __move_assign_alloc(__hash_table&, false_type) _NOEXCEPT {} + + template <class _Ap> + _LIBCPP_INLINE_VISIBILITY + static + void + __swap_alloc(_Ap& __x, _Ap& __y) + _NOEXCEPT_( + !allocator_traits<_Ap>::propagate_on_container_swap::value || + __is_nothrow_swappable<_Ap>::value) + { + __swap_alloc(__x, __y, + integral_constant<bool, + allocator_traits<_Ap>::propagate_on_container_swap::value + >()); + } + + template <class _Ap> + _LIBCPP_INLINE_VISIBILITY + static + void + __swap_alloc(_Ap& __x, _Ap& __y, true_type) + _NOEXCEPT_(__is_nothrow_swappable<_Ap>::value) + { + using _VSTD::swap; + swap(__x, __y); + } + + template <class _Ap> + _LIBCPP_INLINE_VISIBILITY + static + void + __swap_alloc(_Ap&, _Ap&, false_type) _NOEXCEPT {} + + void __deallocate(__node_pointer __np) _NOEXCEPT; + __node_pointer __detach() _NOEXCEPT; +}; + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table() + _NOEXCEPT_( + is_nothrow_default_constructible<__bucket_list>::value && + is_nothrow_default_constructible<__first_node>::value && + is_nothrow_default_constructible<hasher>::value && + is_nothrow_default_constructible<key_equal>::value) + : __p2_(0), + __p3_(1.0f) +{ +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const hasher& __hf, + const key_equal& __eql) + : __bucket_list_(nullptr, __bucket_list_deleter()), + __p1_(), + __p2_(0, __hf), + __p3_(1.0f, __eql) +{ +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const hasher& __hf, + const key_equal& __eql, + const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__node_allocator(__a)), + __p2_(0, __hf), + __p3_(1.0f, __eql) +{ +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__node_allocator(__a)), + __p2_(0), + __p3_(1.0f) +{ +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const __hash_table& __u) + : __bucket_list_(nullptr, + __bucket_list_deleter(allocator_traits<__pointer_allocator>:: + select_on_container_copy_construction( + __u.__bucket_list_.get_deleter().__alloc()), 0)), + __p1_(allocator_traits<__node_allocator>:: + select_on_container_copy_construction(__u.__node_alloc())), + __p2_(0, __u.hash_function()), + __p3_(__u.__p3_) +{ +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(const __hash_table& __u, + const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__node_allocator(__a)), + __p2_(0, __u.hash_function()), + __p3_(__u.__p3_) +{ +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(__hash_table&& __u) + _NOEXCEPT_( + is_nothrow_move_constructible<__bucket_list>::value && + is_nothrow_move_constructible<__first_node>::value && + is_nothrow_move_constructible<hasher>::value && + is_nothrow_move_constructible<key_equal>::value) + : __bucket_list_(_VSTD::move(__u.__bucket_list_)), + __p1_(_VSTD::move(__u.__p1_)), + __p2_(_VSTD::move(__u.__p2_)), + __p3_(_VSTD::move(__u.__p3_)) +{ + if (size() > 0) + { + __bucket_list_[__p1_.first().__next_->__hash_ % bucket_count()] = + static_cast<__node_pointer>(_VSTD::addressof(__p1_.first())); + __u.__p1_.first().__next_ = nullptr; + __u.size() = 0; + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__hash_table(__hash_table&& __u, + const allocator_type& __a) + : __bucket_list_(nullptr, __bucket_list_deleter(__pointer_allocator(__a), 0)), + __p1_(__node_allocator(__a)), + __p2_(0, _VSTD::move(__u.hash_function())), + __p3_(_VSTD::move(__u.__p3_)) +{ + if (__a == allocator_type(__u.__node_alloc())) + { + __bucket_list_.reset(__u.__bucket_list_.release()); + __bucket_list_.get_deleter().size() = __u.__bucket_list_.get_deleter().size(); + __u.__bucket_list_.get_deleter().size() = 0; + if (__u.size() > 0) + { + __p1_.first().__next_ = __u.__p1_.first().__next_; + __u.__p1_.first().__next_ = nullptr; + __bucket_list_[__p1_.first().__next_->__hash_ % bucket_count()] = + static_cast<__node_pointer>(_VSTD::addressof(__p1_.first())); + size() = __u.size(); + __u.size() = 0; + } + } +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::~__hash_table() +{ + __deallocate(__p1_.first().__next_); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__copy_assign_alloc( + const __hash_table& __u, true_type) +{ + if (__node_alloc() != __u.__node_alloc()) + { + clear(); + __bucket_list_.reset(); + __bucket_list_.get_deleter().size() = 0; + } + __bucket_list_.get_deleter().__alloc() = __u.__bucket_list_.get_deleter().__alloc(); + __node_alloc() = __u.__node_alloc(); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>& +__hash_table<_Tp, _Hash, _Equal, _Alloc>::operator=(const __hash_table& __u) +{ + if (this != &__u) + { + __copy_assign_alloc(__u); + hash_function() = __u.hash_function(); + key_eq() = __u.key_eq(); + max_load_factor() = __u.max_load_factor(); + __assign_multi(__u.begin(), __u.end()); + } + return *this; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__deallocate(__node_pointer __np) + _NOEXCEPT +{ + __node_allocator& __na = __node_alloc(); + while (__np != nullptr) + { + __node_pointer __next = __np->__next_; + __node_traits::destroy(__na, _VSTD::addressof(__np->__value_)); + __node_traits::deallocate(__na, __np, 1); + __np = __next; + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_pointer +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__detach() _NOEXCEPT +{ + size_type __bc = bucket_count(); + for (size_type __i = 0; __i < __bc; ++__i) + __bucket_list_[__i] = nullptr; + size() = 0; + __node_pointer __cache = __p1_.first().__next_; + __p1_.first().__next_ = nullptr; + return __cache; +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__move_assign( + __hash_table& __u, true_type) + _NOEXCEPT_( + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable<hasher>::value && + is_nothrow_move_assignable<key_equal>::value) +{ + clear(); + __bucket_list_.reset(__u.__bucket_list_.release()); + __bucket_list_.get_deleter().size() = __u.__bucket_list_.get_deleter().size(); + __u.__bucket_list_.get_deleter().size() = 0; + __move_assign_alloc(__u); + size() = __u.size(); + hash_function() = _VSTD::move(__u.hash_function()); + max_load_factor() = __u.max_load_factor(); + key_eq() = _VSTD::move(__u.key_eq()); + __p1_.first().__next_ = __u.__p1_.first().__next_; + if (size() > 0) + { + __bucket_list_[__p1_.first().__next_->__hash_ % bucket_count()] = + static_cast<__node_pointer>(_VSTD::addressof(__p1_.first())); + __u.__p1_.first().__next_ = nullptr; + __u.size() = 0; + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__move_assign( + __hash_table& __u, false_type) +{ + if (__node_alloc() == __u.__node_alloc()) + __move_assign(__u, true_type()); + else + { + hash_function() = _VSTD::move(__u.hash_function()); + key_eq() = _VSTD::move(__u.key_eq()); + max_load_factor() = __u.max_load_factor(); + if (bucket_count() != 0) + { + __node_pointer __cache = __detach(); +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + const_iterator __i = __u.begin(); + while (__cache != nullptr && __u.size() != 0) + { + __cache->__value_ = _VSTD::move(__u.remove(__i++)->__value_); + __node_pointer __next = __cache->__next_; + __node_insert_multi(__cache); + __cache = __next; + } +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __deallocate(__cache); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS + __deallocate(__cache); + } + const_iterator __i = __u.begin(); + while (__u.size() != 0) + { + __node_holder __h = + __construct_node(_VSTD::move(__u.remove(__i++)->__value_)); + __node_insert_multi(__h.get()); + __h.release(); + } + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +__hash_table<_Tp, _Hash, _Equal, _Alloc>& +__hash_table<_Tp, _Hash, _Equal, _Alloc>::operator=(__hash_table&& __u) + _NOEXCEPT_( + __node_traits::propagate_on_container_move_assignment::value && + is_nothrow_move_assignable<__node_allocator>::value && + is_nothrow_move_assignable<hasher>::value && + is_nothrow_move_assignable<key_equal>::value) +{ + __move_assign(__u, integral_constant<bool, + __node_traits::propagate_on_container_move_assignment::value>()); + return *this; +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _InputIterator> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__assign_unique(_InputIterator __first, + _InputIterator __last) +{ + if (bucket_count() != 0) + { + __node_pointer __cache = __detach(); +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + for (; __cache != nullptr && __first != __last; ++__first) + { + __cache->__value_ = *__first; + __node_pointer __next = __cache->__next_; + __node_insert_unique(__cache); + __cache = __next; + } +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __deallocate(__cache); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS + __deallocate(__cache); + } + for (; __first != __last; ++__first) + __insert_unique(*__first); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _InputIterator> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__assign_multi(_InputIterator __first, + _InputIterator __last) +{ + if (bucket_count() != 0) + { + __node_pointer __cache = __detach(); +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + for (; __cache != nullptr && __first != __last; ++__first) + { + __cache->__value_ = *__first; + __node_pointer __next = __cache->__next_; + __node_insert_multi(__cache); + __cache = __next; + } +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __deallocate(__cache); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS + __deallocate(__cache); + } + for (; __first != __last; ++__first) + __insert_multi(*__first); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::begin() _NOEXCEPT +{ + return iterator(__p1_.first().__next_); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::end() _NOEXCEPT +{ + return iterator(nullptr); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::begin() const _NOEXCEPT +{ + return const_iterator(__p1_.first().__next_); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::end() const _NOEXCEPT +{ + return const_iterator(nullptr); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::clear() _NOEXCEPT +{ + if (size() > 0) + { + __deallocate(__p1_.first().__next_); + __p1_.first().__next_ = nullptr; + size_type __bc = bucket_count(); + for (size_type __i = 0; __i < __bc; ++__i) + __bucket_list_[__i] = nullptr; + size() = 0; + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_unique(__node_pointer __nd) +{ + __nd->__hash_ = hash_function()(__nd->__value_); + size_type __bc = bucket_count(); + bool __inserted = false; + __node_pointer __ndptr; + size_t __chash; + if (__bc != 0) + { + __chash = __nd->__hash_ % __bc; + __ndptr = __bucket_list_[__chash]; + if (__ndptr != nullptr) + { + for (__ndptr = __ndptr->__next_; __ndptr != nullptr && + __ndptr->__hash_ % __bc == __chash; + __ndptr = __ndptr->__next_) + { + if (key_eq()(__ndptr->__value_, __nd->__value_)) + goto __done; + } + } + } + { + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + rehash(_VSTD::max<size_type>(2 * __bc + 1, + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + __chash = __nd->__hash_ % __bc; + } + // insert_after __bucket_list_[__chash], or __first_node if bucket is null + __node_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn = static_cast<__node_pointer>(_VSTD::addressof(__p1_.first())); + __nd->__next_ = __pn->__next_; + __pn->__next_ = __nd; + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__nd->__next_ != nullptr) + __bucket_list_[__nd->__next_->__hash_ % __bc] = __nd; + } + else + { + __nd->__next_ = __pn->__next_; + __pn->__next_ = __nd; + } + __ndptr = __nd; + // increment size + ++size(); + __inserted = true; + } +__done: + return pair<iterator, bool>(iterator(__ndptr), __inserted); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi(__node_pointer __cp) +{ + __cp->__hash_ = hash_function()(__cp->__value_); + size_type __bc = bucket_count(); + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + rehash(_VSTD::max<size_type>(2 * __bc + 1, + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + } + size_t __chash = __cp->__hash_ % __bc; + __node_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn = static_cast<__node_pointer>(_VSTD::addressof(__p1_.first())); + __cp->__next_ = __pn->__next_; + __pn->__next_ = __cp; + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__cp->__next_ != nullptr) + __bucket_list_[__cp->__next_->__hash_ % __bc] = __cp; + } + else + { + for (bool __found = false; __pn->__next_ != nullptr && + __pn->__next_->__hash_ % __bc == __chash; + __pn = __pn->__next_) + { + // __found key_eq() action + // false false loop + // true true loop + // false true set __found to true + // true false break + if (__found != (__pn->__next_->__hash_ == __cp->__hash_ && + key_eq()(__pn->__next_->__value_, __cp->__value_))) + { + if (!__found) + __found = true; + else + break; + } + } + __cp->__next_ = __pn->__next_; + __pn->__next_ = __cp; + if (__cp->__next_ != nullptr) + { + size_t __nhash = __cp->__next_->__hash_ % __bc; + if (__nhash != __chash) + __bucket_list_[__nhash] = __cp; + } + } + ++size(); + return iterator(__cp); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi( + const_iterator __p, __node_pointer __cp) +{ + if (__p != end() && key_eq()(*__p, __cp->__value_)) + { + __node_pointer __np = const_cast<__node_pointer>(__p.__node_); + __cp->__hash_ = __np->__hash_; + size_type __bc = bucket_count(); + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + rehash(_VSTD::max<size_type>(2 * __bc + 1, + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + } + size_t __chash = __cp->__hash_ % __bc; + __node_pointer __pp = __bucket_list_[__chash]; + while (__pp->__next_ != __np) + __pp = __pp->__next_; + __cp->__next_ = __np; + __pp->__next_ = __cp; + ++size(); + return iterator(__cp); + } + return __node_insert_multi(__cp); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__insert_unique(const value_type& __x) +{ + size_t __hash = hash_function()(__x); + size_type __bc = bucket_count(); + bool __inserted = false; + __node_pointer __nd; + size_t __chash; + if (__bc != 0) + { + __chash = __hash % __bc; + __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + __nd->__hash_ % __bc == __chash; + __nd = __nd->__next_) + { + if (key_eq()(__nd->__value_, __x)) + goto __done; + } + } + } + { + __node_holder __h = __construct_node(__x, __hash); + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + rehash(_VSTD::max<size_type>(2 * __bc + 1, + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + __chash = __hash % __bc; + } + // insert_after __bucket_list_[__chash], or __first_node if bucket is null + __node_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn = static_cast<__node_pointer>(_VSTD::addressof(__p1_.first())); + __h->__next_ = __pn->__next_; + __pn->__next_ = __h.get(); + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__h->__next_ != nullptr) + __bucket_list_[__h->__next_->__hash_ % __bc] = __h.get(); + } + else + { + __h->__next_ = __pn->__next_; + __pn->__next_ = __h.get(); + } + __nd = __h.release(); + // increment size + ++size(); + __inserted = true; + } +__done: + return pair<iterator, bool>(iterator(__nd), __inserted); +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class... _Args> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_unique(_Args&&... __args) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...); + pair<iterator, bool> __r = __node_insert_unique(__h.get()); + if (__r.second) + __h.release(); + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class... _Args> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_multi(_Args&&... __args) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...); + iterator __r = __node_insert_multi(__h.get()); + __h.release(); + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class... _Args> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_hint_multi( + const_iterator __p, _Args&&... __args) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...); + iterator __r = __node_insert_multi(__p, __h.get()); + __h.release(); + return __r; +} + +#endif // _LIBCPP_HAS_NO_VARIADICS + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Pp> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__insert_unique(_Pp&& __x) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Pp>(__x)); + pair<iterator, bool> __r = __node_insert_unique(__h.get()); + if (__r.second) + __h.release(); + return __r; +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Pp> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__insert_multi(_Pp&& __x) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Pp>(__x)); + iterator __r = __node_insert_multi(__h.get()); + __h.release(); + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Pp> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__insert_multi(const_iterator __p, + _Pp&& __x) +{ + __node_holder __h = __construct_node(_VSTD::forward<_Pp>(__x)); + iterator __r = __node_insert_multi(__p, __h.get()); + __h.release(); + return __r; +} + +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__insert_multi(const value_type& __x) +{ + __node_holder __h = __construct_node(__x); + iterator __r = __node_insert_multi(__h.get()); + __h.release(); + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__insert_multi(const_iterator __p, + const value_type& __x) +{ + __node_holder __h = __construct_node(__x); + iterator __r = __node_insert_multi(__p, __h.get()); + __h.release(); + return __r; +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::rehash(size_type __n) +{ + __n = __next_prime(_VSTD::max<size_type>(__n, size() > 0)); + size_type __bc = bucket_count(); + if (__n > __bc) + __rehash(__n); + else + { + __n = _VSTD::max<size_type> + ( + __n, + __next_prime(size_t(ceil(float(size()) / max_load_factor()))) + ); + if (__n < __bc) + __rehash(__n); + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__rehash(size_type __nbc) +{ + __pointer_allocator& __npa = __bucket_list_.get_deleter().__alloc(); + __bucket_list_.reset(__nbc > 0 ? + __pointer_alloc_traits::allocate(__npa, __nbc) : nullptr); + __bucket_list_.get_deleter().size() = __nbc; + if (__nbc > 0) + { + for (size_type __i = 0; __i < __nbc; ++__i) + __bucket_list_[__i] = nullptr; + __node_pointer __pp(static_cast<__node_pointer>(_VSTD::addressof(__p1_.first()))); + __node_pointer __cp = __pp->__next_; + if (__cp != nullptr) + { + size_type __chash = __cp->__hash_ % __nbc; + __bucket_list_[__chash] = __pp; + size_type __phash = __chash; + for (__pp = __cp, __cp = __cp->__next_; __cp != nullptr; + __cp = __pp->__next_) + { + __chash = __cp->__hash_ % __nbc; + if (__chash == __phash) + __pp = __cp; + else + { + if (__bucket_list_[__chash] == nullptr) + { + __bucket_list_[__chash] = __pp; + __pp = __cp; + __phash = __chash; + } + else + { + __node_pointer __np = __cp; + for (; __np->__next_ != nullptr && + key_eq()(__cp->__value_, __np->__next_->__value_); + __np = __np->__next_) + ; + __pp->__next_ = __np->__next_; + __np->__next_ = __bucket_list_[__chash]->__next_; + __bucket_list_[__chash]->__next_ = __cp; + + } + } + } + } + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::find(const _Key& __k) +{ + size_t __hash = hash_function()(__k); + size_type __bc = bucket_count(); + if (__bc != 0) + { + size_t __chash = __hash % __bc; + __node_pointer __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + __nd->__hash_ % __bc == __chash; + __nd = __nd->__next_) + { + if (key_eq()(__nd->__value_, __k)) + return iterator(__nd); + } + } + } + return end(); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::find(const _Key& __k) const +{ + size_t __hash = hash_function()(__k); + size_type __bc = bucket_count(); + if (__bc != 0) + { + size_t __chash = __hash % __bc; + __node_const_pointer __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + __nd->__hash_ % __bc == __chash; + __nd = __nd->__next_) + { + if (key_eq()(__nd->__value_, __k)) + return const_iterator(__nd); + } + } + + } + return end(); +} + +#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES +#ifndef _LIBCPP_HAS_NO_VARIADICS + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class ..._Args> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__construct_node(_Args&& ...__args) +{ + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _VSTD::addressof(__h->__value_), _VSTD::forward<_Args>(__args)...); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = hash_function()(__h->__value_); + __h->__next_ = nullptr; + return __h; +} + +#endif // _LIBCPP_HAS_NO_VARIADICS + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__construct_node(value_type&& __v, + size_t __hash) +{ + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _VSTD::addressof(__h->__value_), _VSTD::move(__v)); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = __hash; + __h->__next_ = nullptr; + return _VSTD::move(__h); +} + +#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__construct_node(const value_type& __v) +{ + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _VSTD::addressof(__h->__value_), __v); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = hash_function()(__h->__value_); + __h->__next_ = nullptr; + return _VSTD::move(__h); +} + +#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__construct_node(const value_type& __v, + size_t __hash) +{ + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _VSTD::addressof(__h->__value_), __v); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = __hash; + __h->__next_ = nullptr; + return _VSTD::move(__h); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::erase(const_iterator __p) +{ + __node_pointer __np = const_cast<__node_pointer>(__p.__node_); + iterator __r(__np); + ++__r; + remove(__p); + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::erase(const_iterator __first, + const_iterator __last) +{ + for (const_iterator __p = __first; __first != __last; __p = __first) + { + ++__first; + erase(__p); + } + __node_pointer __np = const_cast<__node_pointer>(__last.__node_); + return iterator (__np); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__erase_unique(const _Key& __k) +{ + iterator __i = find(__k); + if (__i == end()) + return 0; + erase(__i); + return 1; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__erase_multi(const _Key& __k) +{ + size_type __r = 0; + iterator __i = find(__k); + if (__i != end()) + { + iterator __e = end(); + do + { + erase(__i++); + ++__r; + } while (__i != __e && key_eq()(*__i, __k)); + } + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::remove(const_iterator __p) _NOEXCEPT +{ + // current node + __node_pointer __cn = const_cast<__node_pointer>(__p.__node_); + size_type __bc = bucket_count(); + size_t __chash = __cn->__hash_ % __bc; + // find previous node + __node_pointer __pn = __bucket_list_[__chash]; + for (; __pn->__next_ != __cn; __pn = __pn->__next_) + ; + // Fix up __bucket_list_ + // if __pn is not in same bucket (before begin is not in same bucket) && + // if __cn->__next_ is not in same bucket (nullptr is not in same bucket) + if (__pn == _VSTD::addressof(__p1_.first()) || __pn->__hash_ % __bc != __chash) + { + if (__cn->__next_ == nullptr || __cn->__next_->__hash_ % __bc != __chash) + __bucket_list_[__chash] = nullptr; + } + // if __cn->__next_ is not in same bucket (nullptr is in same bucket) + if (__cn->__next_ != nullptr) + { + size_t __nhash = __cn->__next_->__hash_ % __bc; + if (__nhash != __chash) + __bucket_list_[__nhash] = __pn; + } + // remove __cn + __pn->__next_ = __cn->__next_; + __cn->__next_ = nullptr; + --size(); + return __node_holder(__cn, _Dp(__node_alloc(), true)); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +inline _LIBCPP_INLINE_VISIBILITY +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__count_unique(const _Key& __k) const +{ + return static_cast<size_type>(find(__k) != end()); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__count_multi(const _Key& __k) const +{ + size_type __r = 0; + const_iterator __i = find(__k); + if (__i != end()) + { + const_iterator __e = end(); + do + { + ++__i; + ++__r; + } while (__i != __e && key_eq()(*__i, __k)); + } + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_unique( + const _Key& __k) +{ + iterator __i = find(__k); + iterator __j = __i; + if (__i != end()) + ++__j; + return pair<iterator, iterator>(__i, __j); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_unique( + const _Key& __k) const +{ + const_iterator __i = find(__k); + const_iterator __j = __i; + if (__i != end()) + ++__j; + return pair<const_iterator, const_iterator>(__i, __j); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_multi( + const _Key& __k) +{ + iterator __i = find(__k); + iterator __j = __i; + if (__i != end()) + { + iterator __e = end(); + do + { + ++__j; + } while (__j != __e && key_eq()(*__j, __k)); + } + return pair<iterator, iterator>(__i, __j); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator, + typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_multi( + const _Key& __k) const +{ + const_iterator __i = find(__k); + const_iterator __j = __i; + if (__i != end()) + { + const_iterator __e = end(); + do + { + ++__j; + } while (__j != __e && key_eq()(*__j, __k)); + } + return pair<const_iterator, const_iterator>(__i, __j); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::swap(__hash_table& __u) + _NOEXCEPT_( + (!allocator_traits<__pointer_allocator>::propagate_on_container_swap::value || + __is_nothrow_swappable<__pointer_allocator>::value) && + (!__node_traits::propagate_on_container_swap::value || + __is_nothrow_swappable<__node_allocator>::value) && + __is_nothrow_swappable<hasher>::value && + __is_nothrow_swappable<key_equal>::value) +{ + { + __node_pointer_pointer __npp = __bucket_list_.release(); + __bucket_list_.reset(__u.__bucket_list_.release()); + __u.__bucket_list_.reset(__npp); + } + _VSTD::swap(__bucket_list_.get_deleter().size(), __u.__bucket_list_.get_deleter().size()); + __swap_alloc(__bucket_list_.get_deleter().__alloc(), + __u.__bucket_list_.get_deleter().__alloc()); + __swap_alloc(__node_alloc(), __u.__node_alloc()); + _VSTD::swap(__p1_.first().__next_, __u.__p1_.first().__next_); + __p2_.swap(__u.__p2_); + __p3_.swap(__u.__p3_); + if (size() > 0) + __bucket_list_[__p1_.first().__next_->__hash_ % bucket_count()] = + static_cast<__node_pointer>(_VSTD::addressof(__p1_.first())); + if (__u.size() > 0) + __u.__bucket_list_[__u.__p1_.first().__next_->__hash_ % __u.bucket_count()] = + static_cast<__node_pointer>(_VSTD::addressof(__u.__p1_.first())); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::size_type +__hash_table<_Tp, _Hash, _Equal, _Alloc>::bucket_size(size_type __n) const +{ + __node_const_pointer __np = __bucket_list_[__n]; + size_type __bc = bucket_count(); + size_type __r = 0; + if (__np != nullptr) + { + for (__np = __np->__next_; __np != nullptr && + __np->__hash_ % __bc == __n; + __np = __np->__next_, ++__r) + ; + } + return __r; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline _LIBCPP_INLINE_VISIBILITY +void +swap(__hash_table<_Tp, _Hash, _Equal, _Alloc>& __x, + __hash_table<_Tp, _Hash, _Equal, _Alloc>& __y) + _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) +{ + __x.swap(__y); +} + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP__HASH_TABLE |
