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Diffstat (limited to 'data/iphoneos-sdk/v1/__hash_table')
| -rwxr-xr-x | data/iphoneos-sdk/v1/__hash_table | 2676 |
1 files changed, 2676 insertions, 0 deletions
diff --git a/data/iphoneos-sdk/v1/__hash_table b/data/iphoneos-sdk/v1/__hash_table new file mode 100755 index 000000000..3f430af12 --- /dev/null +++ b/data/iphoneos-sdk/v1/__hash_table @@ -0,0 +1,2676 @@ +// -*- 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 <utility> +#include <type_traits> + +#include <__debug> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + + +_LIBCPP_BEGIN_NAMESPACE_STD + +#ifndef _LIBCPP_CXX03_LANG +template <class _Key, class _Tp> +union __hash_value_type; +#else +template <class _Key, class _Tp> +struct __hash_value_type; +#endif + +template <class _Key, class _Cp, class _Hash, + bool = is_empty<_Hash>::value && !__libcpp_is_final<_Hash>::value> +class __unordered_map_hasher; + +template <class _Key, class _Cp, class _Pred, + bool = is_empty<_Pred>::value && !__libcpp_is_final<_Pred>::value + > +class __unordered_map_equal; + +#ifndef _LIBCPP_CXX03_LANG +template <class _Tp> +struct __is_hash_value_type_imp : false_type {}; + +template <class _Key, class _Value> +struct __is_hash_value_type_imp<__hash_value_type<_Key, _Value>> : true_type {}; + +template <class ..._Args> +struct __is_hash_value_type : false_type {}; + +template <class _One> +struct __is_hash_value_type<_One> : __is_hash_value_type_imp<typename __uncvref<_One>::type> {}; +#endif + +_LIBCPP_FUNC_VIS +size_t __next_prime(size_t __n); + +template <class _NodePtr> +struct __hash_node_base +{ + typedef typename pointer_traits<_NodePtr>::element_type __node_type; + typedef __hash_node_base __first_node; + typedef typename __rebind_pointer<_NodePtr, __first_node>::type __node_base_pointer; + typedef _NodePtr __node_pointer; + +#if defined(_LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB) + typedef __node_base_pointer __next_pointer; +#else + typedef typename conditional< + is_pointer<__node_pointer>::value, + __node_base_pointer, + __node_pointer>::type __next_pointer; +#endif + + __next_pointer __next_; + + _LIBCPP_INLINE_VISIBILITY + __next_pointer __ptr() _NOEXCEPT { + return static_cast<__next_pointer>( + pointer_traits<__node_base_pointer>::pointer_to(*this)); + } + + _LIBCPP_INLINE_VISIBILITY + __node_pointer __upcast() _NOEXCEPT { + return static_cast<__node_pointer>( + pointer_traits<__node_base_pointer>::pointer_to(*this)); + } + + _LIBCPP_INLINE_VISIBILITY + size_t __hash() const _NOEXCEPT { + return static_cast<__node_type const&>(*this).__hash_; + } + + _LIBCPP_INLINE_VISIBILITY __hash_node_base() _NOEXCEPT : __next_(nullptr) {} +}; + +template <class _Tp, class _VoidPtr> +struct __hash_node + : public __hash_node_base + < + typename __rebind_pointer<_VoidPtr, __hash_node<_Tp, _VoidPtr> >::type + > +{ + typedef _Tp __node_value_type; + + size_t __hash_; + __node_value_type __value_; +}; + +inline _LIBCPP_INLINE_VISIBILITY +bool +__is_hash_power2(size_t __bc) +{ + return __bc > 2 && !(__bc & (__bc - 1)); +} + +inline _LIBCPP_INLINE_VISIBILITY +size_t +__constrain_hash(size_t __h, size_t __bc) +{ + return !(__bc & (__bc - 1)) ? __h & (__bc - 1) : + (__h < __bc ? __h : __h % __bc); +} + +inline _LIBCPP_INLINE_VISIBILITY +size_t +__next_hash_pow2(size_t __n) +{ + return __n < 2 ? __n : (size_t(1) << (std::numeric_limits<size_t>::digits - __clz(__n-1))); +} + + +template <class _Tp, class _Hash, class _Equal, class _Alloc> class __hash_table; + +template <class _NodePtr> class _LIBCPP_TEMPLATE_VIS __hash_iterator; +template <class _ConstNodePtr> class _LIBCPP_TEMPLATE_VIS __hash_const_iterator; +template <class _NodePtr> class _LIBCPP_TEMPLATE_VIS __hash_local_iterator; +template <class _ConstNodePtr> class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator; +template <class _HashIterator> class _LIBCPP_TEMPLATE_VIS __hash_map_iterator; +template <class _HashIterator> class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator; + +template <class _Tp> +struct __hash_key_value_types { + static_assert(!is_reference<_Tp>::value && !is_const<_Tp>::value, ""); + typedef _Tp key_type; + typedef _Tp __node_value_type; + typedef _Tp __container_value_type; + static const bool __is_map = false; + + _LIBCPP_INLINE_VISIBILITY + static key_type const& __get_key(_Tp const& __v) { + return __v; + } + _LIBCPP_INLINE_VISIBILITY + static __container_value_type const& __get_value(__node_value_type const& __v) { + return __v; + } + _LIBCPP_INLINE_VISIBILITY + static __container_value_type* __get_ptr(__node_value_type& __n) { + return _VSTD::addressof(__n); + } +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY + static __container_value_type&& __move(__node_value_type& __v) { + return _VSTD::move(__v); + } +#endif +}; + +template <class _Key, class _Tp> +struct __hash_key_value_types<__hash_value_type<_Key, _Tp> > { + typedef _Key key_type; + typedef _Tp mapped_type; + typedef __hash_value_type<_Key, _Tp> __node_value_type; + typedef pair<const _Key, _Tp> __container_value_type; + typedef pair<_Key, _Tp> __nc_value_type; + typedef __container_value_type __map_value_type; + static const bool __is_map = true; + + _LIBCPP_INLINE_VISIBILITY + static key_type const& __get_key(__container_value_type const& __v) { + return __v.first; + } + + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + static typename enable_if<__is_same_uncvref<_Up, __node_value_type>::value, + __container_value_type const&>::type + __get_value(_Up& __t) { + return __t.__cc; + } + + template <class _Up> + _LIBCPP_INLINE_VISIBILITY + static typename enable_if<__is_same_uncvref<_Up, __container_value_type>::value, + __container_value_type const&>::type + __get_value(_Up& __t) { + return __t; + } + + _LIBCPP_INLINE_VISIBILITY + static __container_value_type* __get_ptr(__node_value_type& __n) { + return _VSTD::addressof(__n.__cc); + } +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY + static __nc_value_type&& __move(__node_value_type& __v) { + return _VSTD::move(__v.__nc); + } +#endif + +}; + +template <class _Tp, class _AllocPtr, class _KVTypes = __hash_key_value_types<_Tp>, + bool = _KVTypes::__is_map> +struct __hash_map_pointer_types {}; + +template <class _Tp, class _AllocPtr, class _KVTypes> +struct __hash_map_pointer_types<_Tp, _AllocPtr, _KVTypes, true> { + typedef typename _KVTypes::__map_value_type _Mv; + typedef typename __rebind_pointer<_AllocPtr, _Mv>::type + __map_value_type_pointer; + typedef typename __rebind_pointer<_AllocPtr, const _Mv>::type + __const_map_value_type_pointer; +}; + +template <class _NodePtr, class _NodeT = typename pointer_traits<_NodePtr>::element_type> +struct __hash_node_types; + +template <class _NodePtr, class _Tp, class _VoidPtr> +struct __hash_node_types<_NodePtr, __hash_node<_Tp, _VoidPtr> > + : public __hash_key_value_types<_Tp>, __hash_map_pointer_types<_Tp, _VoidPtr> + +{ + typedef __hash_key_value_types<_Tp> __base; + +public: + typedef ptrdiff_t difference_type; + typedef size_t size_type; + + typedef typename __rebind_pointer<_NodePtr, void>::type __void_pointer; + + typedef typename pointer_traits<_NodePtr>::element_type __node_type; + typedef _NodePtr __node_pointer; + + typedef __hash_node_base<__node_pointer> __node_base_type; + typedef typename __rebind_pointer<_NodePtr, __node_base_type>::type + __node_base_pointer; + + typedef typename __node_base_type::__next_pointer __next_pointer; + + typedef _Tp __node_value_type; + typedef typename __rebind_pointer<_VoidPtr, __node_value_type>::type + __node_value_type_pointer; + typedef typename __rebind_pointer<_VoidPtr, const __node_value_type>::type + __const_node_value_type_pointer; + +private: + static_assert(!is_const<__node_type>::value, + "_NodePtr should never be a pointer to const"); + static_assert((is_same<typename pointer_traits<_VoidPtr>::element_type, void>::value), + "_VoidPtr does not point to unqualified void type"); + static_assert((is_same<typename __rebind_pointer<_VoidPtr, __node_type>::type, + _NodePtr>::value), "_VoidPtr does not rebind to _NodePtr."); +}; + +template <class _HashIterator> +struct __hash_node_types_from_iterator; +template <class _NodePtr> +struct __hash_node_types_from_iterator<__hash_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; +template <class _NodePtr> +struct __hash_node_types_from_iterator<__hash_const_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; +template <class _NodePtr> +struct __hash_node_types_from_iterator<__hash_local_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; +template <class _NodePtr> +struct __hash_node_types_from_iterator<__hash_const_local_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {}; + + +template <class _NodeValueTp, class _VoidPtr> +struct __make_hash_node_types { + typedef __hash_node<_NodeValueTp, _VoidPtr> _NodeTp; + typedef typename __rebind_pointer<_VoidPtr, _NodeTp>::type _NodePtr; + typedef __hash_node_types<_NodePtr> type; +}; + +template <class _NodePtr> +class _LIBCPP_TEMPLATE_VIS __hash_iterator +{ + typedef __hash_node_types<_NodePtr> _NodeTypes; + typedef _NodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_pointer __node_; + +public: + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef value_type& reference; + typedef typename _NodeTypes::__node_value_type_pointer pointer; + + _LIBCPP_INLINE_VISIBILITY __hash_iterator() _NOEXCEPT : __node_(nullptr) { + _LIBCPP_DEBUG_MODE(__get_db()->__insert_i(this)); + } + +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_iterator(const __hash_iterator& __i) + : __node_(__i.__node_) + { + __get_db()->__iterator_copy(this, &__i); + } + + _LIBCPP_INLINE_VISIBILITY + ~__hash_iterator() + { + __get_db()->__erase_i(this); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_iterator& operator=(const __hash_iterator& __i) + { + if (this != &__i) + { + __get_db()->__iterator_copy(this, &__i); + __node_ = __i.__node_; + } + return *this; + } +#endif // _LIBCPP_DEBUG_LEVEL >= 2 + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container iterator"); + return __node_->__upcast()->__value_; + } + + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container iterator"); + return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_iterator& operator++() { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to increment non-incrementable unordered container iterator"); + __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 == __y);} + +private: +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_iterator(__next_pointer __node, const void* __c) _NOEXCEPT + : __node_(__node) + { + __get_db()->__insert_ic(this, __c); + } +#else + _LIBCPP_INLINE_VISIBILITY + __hash_iterator(__next_pointer __node) _NOEXCEPT + : __node_(__node) + {} +#endif + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator; + template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_map_iterator; + template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_map; + template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_multimap; +}; + +template <class _NodePtr> +class _LIBCPP_TEMPLATE_VIS __hash_const_iterator +{ + static_assert(!is_const<typename pointer_traits<_NodePtr>::element_type>::value, ""); + typedef __hash_node_types<_NodePtr> _NodeTypes; + typedef _NodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_pointer __node_; + +public: + typedef __hash_iterator<_NodePtr> __non_const_iterator; + + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef const value_type& reference; + typedef typename _NodeTypes::__const_node_value_type_pointer pointer; + + + _LIBCPP_INLINE_VISIBILITY __hash_const_iterator() _NOEXCEPT : __node_(nullptr) { + _LIBCPP_DEBUG_MODE(__get_db()->__insert_i(this)); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator(const __non_const_iterator& __x) _NOEXCEPT + : __node_(__x.__node_) + { + _LIBCPP_DEBUG_MODE(__get_db()->__iterator_copy(this, &__x)); + } + +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator(const __hash_const_iterator& __i) + : __node_(__i.__node_) + { + __get_db()->__iterator_copy(this, &__i); + } + + _LIBCPP_INLINE_VISIBILITY + ~__hash_const_iterator() + { + __get_db()->__erase_i(this); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator& operator=(const __hash_const_iterator& __i) + { + if (this != &__i) + { + __get_db()->__iterator_copy(this, &__i); + __node_ = __i.__node_; + } + return *this; + } +#endif // _LIBCPP_DEBUG_LEVEL >= 2 + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container const_iterator"); + return __node_->__upcast()->__value_; + } + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container const_iterator"); + return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator& operator++() { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to increment non-incrementable unordered container const_iterator"); + __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 == __y);} + +private: +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator(__next_pointer __node, const void* __c) _NOEXCEPT + : __node_(__node) + { + __get_db()->__insert_ic(this, __c); + } +#else + _LIBCPP_INLINE_VISIBILITY + __hash_const_iterator(__next_pointer __node) _NOEXCEPT + : __node_(__node) + {} +#endif + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator; + template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_map; + template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_multimap; +}; + +template <class _NodePtr> +class _LIBCPP_TEMPLATE_VIS __hash_local_iterator +{ + typedef __hash_node_types<_NodePtr> _NodeTypes; + typedef _NodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_pointer __node_; + size_t __bucket_; + size_t __bucket_count_; + +public: + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef value_type& reference; + typedef typename _NodeTypes::__node_value_type_pointer pointer; + + _LIBCPP_INLINE_VISIBILITY __hash_local_iterator() _NOEXCEPT : __node_(nullptr) { + _LIBCPP_DEBUG_MODE(__get_db()->__insert_i(this)); + } + +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator(const __hash_local_iterator& __i) + : __node_(__i.__node_), + __bucket_(__i.__bucket_), + __bucket_count_(__i.__bucket_count_) + { + __get_db()->__iterator_copy(this, &__i); + } + + _LIBCPP_INLINE_VISIBILITY + ~__hash_local_iterator() + { + __get_db()->__erase_i(this); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator& operator=(const __hash_local_iterator& __i) + { + if (this != &__i) + { + __get_db()->__iterator_copy(this, &__i); + __node_ = __i.__node_; + __bucket_ = __i.__bucket_; + __bucket_count_ = __i.__bucket_count_; + } + return *this; + } +#endif // _LIBCPP_DEBUG_LEVEL >= 2 + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container local_iterator"); + return __node_->__upcast()->__value_; + } + + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container local_iterator"); + return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator& operator++() { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to increment non-incrementable unordered container local_iterator"); + __node_ = __node_->__next_; + if (__node_ != nullptr && __constrain_hash(__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 == __y);} + +private: +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator(__next_pointer __node, size_t __bucket, + size_t __bucket_count, const void* __c) _NOEXCEPT + : __node_(__node), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + __get_db()->__insert_ic(this, __c); + if (__node_ != nullptr) + __node_ = __node_->__next_; + } +#else + _LIBCPP_INLINE_VISIBILITY + __hash_local_iterator(__next_pointer __node, size_t __bucket, + size_t __bucket_count) _NOEXCEPT + : __node_(__node), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + if (__node_ != nullptr) + __node_ = __node_->__next_; + } +#endif + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator; + template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_map_iterator; +}; + +template <class _ConstNodePtr> +class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator +{ + typedef __hash_node_types<_ConstNodePtr> _NodeTypes; + typedef _ConstNodePtr __node_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + + __next_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 __rebind_pointer<__node_pointer, __non_const_node>::type + __non_const_node_pointer; +public: + typedef __hash_local_iterator<__non_const_node_pointer> + __non_const_iterator; + + typedef forward_iterator_tag iterator_category; + typedef typename _NodeTypes::__node_value_type value_type; + typedef typename _NodeTypes::difference_type difference_type; + typedef const value_type& reference; + typedef typename _NodeTypes::__const_node_value_type_pointer pointer; + + + _LIBCPP_INLINE_VISIBILITY __hash_const_local_iterator() _NOEXCEPT : __node_(nullptr) { + _LIBCPP_DEBUG_MODE(__get_db()->__insert_i(this)); + } + + _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_DEBUG_MODE(__get_db()->__iterator_copy(this, &__x)); + } + +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator(const __hash_const_local_iterator& __i) + : __node_(__i.__node_), + __bucket_(__i.__bucket_), + __bucket_count_(__i.__bucket_count_) + { + __get_db()->__iterator_copy(this, &__i); + } + + _LIBCPP_INLINE_VISIBILITY + ~__hash_const_local_iterator() + { + __get_db()->__erase_i(this); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator& operator=(const __hash_const_local_iterator& __i) + { + if (this != &__i) + { + __get_db()->__iterator_copy(this, &__i); + __node_ = __i.__node_; + __bucket_ = __i.__bucket_; + __bucket_count_ = __i.__bucket_count_; + } + return *this; + } +#endif // _LIBCPP_DEBUG_LEVEL >= 2 + + _LIBCPP_INLINE_VISIBILITY + reference operator*() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container const_local_iterator"); + return __node_->__upcast()->__value_; + } + + _LIBCPP_INLINE_VISIBILITY + pointer operator->() const { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to dereference a non-dereferenceable unordered container const_local_iterator"); + return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__value_); + } + + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator& operator++() { + _LIBCPP_DEBUG_ASSERT(__get_const_db()->__dereferenceable(this), + "Attempted to increment non-incrementable unordered container const_local_iterator"); + __node_ = __node_->__next_; + if (__node_ != nullptr && __constrain_hash(__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 == __y);} + +private: +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator(__next_pointer __node, size_t __bucket, + size_t __bucket_count, const void* __c) _NOEXCEPT + : __node_(__node), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + __get_db()->__insert_ic(this, __c); + if (__node_ != nullptr) + __node_ = __node_->__next_; + } +#else + _LIBCPP_INLINE_VISIBILITY + __hash_const_local_iterator(__next_pointer __node, size_t __bucket, + size_t __bucket_count) _NOEXCEPT + : __node_(__node), + __bucket_(__bucket), + __bucket_count_(__bucket_count) + { + if (__node_ != nullptr) + __node_ = __node_->__next_; + } +#endif + template <class, class, class, class> friend class __hash_table; + template <class> friend class _LIBCPP_TEMPLATE_VIS __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_CXX03_LANG + _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_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; + +public: + typedef typename __alloc_traits::pointer pointer; +private: + typedef __hash_node_types<pointer> _NodeTypes; + + 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_, _NodeTypes::__get_ptr(__p->__value_)); + if (__p) + __alloc_traits::deallocate(__na_, __p, 1); + } + + template <class> friend class __hash_map_node_destructor; +}; + + +#ifndef _LIBCPP_CXX03_LANG +template <class _Key, class _Hash, class _Equal, class _Alloc> +struct __diagnose_hash_table_helper { + static constexpr bool __trigger_diagnostics() + _LIBCPP_DIAGNOSE_WARNING(__check_hash_requirements<_Key, _Hash>::value + && !__invokable<_Hash const&, _Key const&>::value, + "the specified hash functor does not provide a const call operator") + _LIBCPP_DIAGNOSE_WARNING(is_copy_constructible<_Equal>::value + && !__invokable<_Equal const&, _Key const&, _Key const&>::value, + "the specified comparator type does not provide a const call operator") + { + static_assert(__check_hash_requirements<_Key, _Hash>::value, + "the specified hash does not meet the Hash requirements"); + static_assert(is_copy_constructible<_Equal>::value, + "the specified comparator is required to be copy constructible"); + return true; + } +}; + +template <class _Key, class _Value, class _Hash, class _Equal, class _Alloc> +struct __diagnose_hash_table_helper< + __hash_value_type<_Key, _Value>, + __unordered_map_hasher<_Key, __hash_value_type<_Key, _Value>, _Hash>, + __unordered_map_equal<_Key, __hash_value_type<_Key, _Value>, _Equal>, + _Alloc> +: __diagnose_hash_table_helper<_Key, _Hash, _Equal, _Alloc> +{ +}; +#endif // _LIBCPP_CXX03_LANG + +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; + typedef typename + __make_hash_node_types<value_type, typename __alloc_traits::void_pointer>::type + _NodeTypes; +public: + + typedef typename _NodeTypes::__node_value_type __node_value_type; + typedef typename _NodeTypes::__container_value_type __container_value_type; + typedef typename _NodeTypes::key_type key_type; + typedef value_type& reference; + typedef const value_type& const_reference; + typedef typename __alloc_traits::pointer pointer; + typedef typename __alloc_traits::const_pointer const_pointer; +#ifndef _LIBCPP_ABI_FIX_UNORDERED_CONTAINER_SIZE_TYPE + typedef typename __alloc_traits::size_type size_type; +#else + typedef typename _NodeTypes::size_type size_type; +#endif + typedef typename _NodeTypes::difference_type difference_type; +public: + // Create __node + + typedef typename _NodeTypes::__node_type __node; + typedef typename __rebind_alloc_helper<__alloc_traits, __node>::type __node_allocator; + typedef allocator_traits<__node_allocator> __node_traits; + typedef typename _NodeTypes::__void_pointer __void_pointer; + typedef typename _NodeTypes::__node_pointer __node_pointer; + typedef typename _NodeTypes::__node_pointer __node_const_pointer; + typedef typename _NodeTypes::__node_base_type __first_node; + typedef typename _NodeTypes::__node_base_pointer __node_base_pointer; + typedef typename _NodeTypes::__next_pointer __next_pointer; + +private: + // check for sane allocator pointer rebinding semantics. Rebinding the + // allocator for a new pointer type should be exactly the same as rebinding + // the pointer using 'pointer_traits'. + static_assert((is_same<__node_pointer, typename __node_traits::pointer>::value), + "Allocator does not rebind pointers in a sane manner."); + typedef typename __rebind_alloc_helper<__node_traits, __first_node>::type + __node_base_allocator; + typedef allocator_traits<__node_base_allocator> __node_base_traits; + static_assert((is_same<__node_base_pointer, typename __node_base_traits::pointer>::value), + "Allocator does not rebind pointers in a sane manner."); + +private: + + typedef typename __rebind_alloc_helper<__node_traits, __next_pointer>::type __pointer_allocator; + typedef __bucket_list_deallocator<__pointer_allocator> __bucket_list_deleter; + typedef unique_ptr<__next_pointer[], __bucket_list_deleter> __bucket_list; + typedef allocator_traits<__pointer_allocator> __pointer_alloc_traits; + typedef typename __bucket_list_deleter::pointer __node_pointer_pointer; + +#ifndef _LIBCPP_CXX03_LANG + static_assert(__diagnose_hash_table_helper<_Tp, _Hash, _Equal, _Alloc>::__trigger_diagnostics(), ""); +#endif + + // --- 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_pointer> const_iterator; + typedef __hash_local_iterator<__node_pointer> local_iterator; + typedef __hash_const_local_iterator<__node_pointer> const_local_iterator; + + _LIBCPP_INLINE_VISIBILITY + __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); + _LIBCPP_INLINE_VISIBILITY + __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_CXX03_LANG + __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_CXX03_LANG + ~__hash_table(); + + __hash_table& operator=(const __hash_table& __u); +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY + __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 std::min<size_type>( + __node_traits::max_size(__node_alloc()), + numeric_limits<difference_type >::max() + ); + } + + 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); + +#ifndef _LIBCPP_CXX03_LANG + template <class _Key, class ..._Args> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> __emplace_unique_key_args(_Key const& __k, _Args&&... __args); + + template <class... _Args> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> __emplace_unique_impl(_Args&&... __args); + + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> __emplace_unique(_Pp&& __x) { + return __emplace_unique_extract_key(_VSTD::forward<_Pp>(__x), + __can_extract_key<_Pp, key_type>()); + } + + template <class _First, class _Second> + _LIBCPP_INLINE_VISIBILITY + typename enable_if< + __can_extract_map_key<_First, key_type, __container_value_type>::value, + pair<iterator, bool> + >::type __emplace_unique(_First&& __f, _Second&& __s) { + return __emplace_unique_key_args(__f, _VSTD::forward<_First>(__f), + _VSTD::forward<_Second>(__s)); + } + + template <class... _Args> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> __emplace_unique(_Args&&... __args) { + return __emplace_unique_impl(_VSTD::forward<_Args>(__args)...); + } + + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> + __emplace_unique_extract_key(_Pp&& __x, __extract_key_fail_tag) { + return __emplace_unique_impl(_VSTD::forward<_Pp>(__x)); + } + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> + __emplace_unique_extract_key(_Pp&& __x, __extract_key_self_tag) { + return __emplace_unique_key_args(__x, _VSTD::forward<_Pp>(__x)); + } + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> + __emplace_unique_extract_key(_Pp&& __x, __extract_key_first_tag) { + return __emplace_unique_key_args(__x.first, _VSTD::forward<_Pp>(__x)); + } + + template <class... _Args> + _LIBCPP_INLINE_VISIBILITY + iterator __emplace_multi(_Args&&... __args); + template <class... _Args> + _LIBCPP_INLINE_VISIBILITY + iterator __emplace_hint_multi(const_iterator __p, _Args&&... __args); + + + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> + __insert_unique(__container_value_type&& __x) { + return __emplace_unique_key_args(_NodeTypes::__get_key(__x), _VSTD::move(__x)); + } + + template <class _Pp, class = typename enable_if< + !__is_same_uncvref<_Pp, __container_value_type>::value + >::type> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> __insert_unique(_Pp&& __x) { + return __emplace_unique(_VSTD::forward<_Pp>(__x)); + } + + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + iterator __insert_multi(_Pp&& __x) { + return __emplace_multi(_VSTD::forward<_Pp>(__x)); + } + + template <class _Pp> + _LIBCPP_INLINE_VISIBILITY + iterator __insert_multi(const_iterator __p, _Pp&& __x) { + return __emplace_hint_multi(__p, _VSTD::forward<_Pp>(__x)); + } + +#else // !defined(_LIBCPP_CXX03_LANG) + template <class _Key, class _Args> + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> __emplace_unique_key_args(_Key const&, _Args& __args); + + iterator __insert_multi(const __container_value_type& __x); + iterator __insert_multi(const_iterator __p, const __container_value_type& __x); +#endif + + _LIBCPP_INLINE_VISIBILITY + pair<iterator, bool> __insert_unique(const __container_value_type& __x) { + return __emplace_unique_key_args(_NodeTypes::__get_key(__x), __x); + } + + 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(); + } + + _LIBCPP_INLINE_VISIBILITY + iterator begin() _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + iterator end() _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + const_iterator begin() const _NOEXCEPT; + _LIBCPP_INLINE_VISIBILITY + const_iterator end() const _NOEXCEPT; + + template <class _Key> + _LIBCPP_INLINE_VISIBILITY + size_type bucket(const _Key& __k) const + { + _LIBCPP_ASSERT(bucket_count() > 0, + "unordered container::bucket(key) called when bucket_count() == 0"); + return __constrain_hash(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> + _LIBCPP_INLINE_VISIBILITY + 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) +#if _LIBCPP_STD_VER <= 11 + _NOEXCEPT_DEBUG_( + __is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value + && (!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) + ); +#else + _NOEXCEPT_DEBUG_(__is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value); +#endif + + _LIBCPP_INLINE_VISIBILITY + size_type max_bucket_count() const _NOEXCEPT + {return 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 + { + _LIBCPP_ASSERT(__mlf > 0, + "unordered container::max_load_factor(lf) called with lf <= 0"); + max_load_factor() = _VSTD::max(__mlf, load_factor()); + } + + _LIBCPP_INLINE_VISIBILITY + local_iterator + begin(size_type __n) + { + _LIBCPP_ASSERT(__n < bucket_count(), + "unordered container::begin(n) called with n >= bucket_count()"); +#if _LIBCPP_DEBUG_LEVEL >= 2 + return local_iterator(__bucket_list_[__n], __n, bucket_count(), this); +#else + return local_iterator(__bucket_list_[__n], __n, bucket_count()); +#endif + } + + _LIBCPP_INLINE_VISIBILITY + local_iterator + end(size_type __n) + { + _LIBCPP_ASSERT(__n < bucket_count(), + "unordered container::end(n) called with n >= bucket_count()"); +#if _LIBCPP_DEBUG_LEVEL >= 2 + return local_iterator(nullptr, __n, bucket_count(), this); +#else + return local_iterator(nullptr, __n, bucket_count()); +#endif + } + + _LIBCPP_INLINE_VISIBILITY + const_local_iterator + cbegin(size_type __n) const + { + _LIBCPP_ASSERT(__n < bucket_count(), + "unordered container::cbegin(n) called with n >= bucket_count()"); +#if _LIBCPP_DEBUG_LEVEL >= 2 + return const_local_iterator(__bucket_list_[__n], __n, bucket_count(), this); +#else + return const_local_iterator(__bucket_list_[__n], __n, bucket_count()); +#endif + } + + _LIBCPP_INLINE_VISIBILITY + const_local_iterator + cend(size_type __n) const + { + _LIBCPP_ASSERT(__n < bucket_count(), + "unordered container::cend(n) called with n >= bucket_count()"); +#if _LIBCPP_DEBUG_LEVEL >= 2 + return const_local_iterator(nullptr, __n, bucket_count(), this); +#else + return const_local_iterator(nullptr, __n, bucket_count()); +#endif + } + +#if _LIBCPP_DEBUG_LEVEL >= 2 + + bool __dereferenceable(const const_iterator* __i) const; + bool __decrementable(const const_iterator* __i) const; + bool __addable(const const_iterator* __i, ptrdiff_t __n) const; + bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const; + +#endif // _LIBCPP_DEBUG_LEVEL >= 2 + +private: + void __rehash(size_type __n); + +#ifndef _LIBCPP_CXX03_LANG + template <class ..._Args> + __node_holder __construct_node(_Args&& ...__args); + + template <class _First, class ..._Rest> + __node_holder __construct_node_hash(size_t __hash, _First&& __f, _Rest&&... __rest); +#else // _LIBCPP_CXX03_LANG + __node_holder __construct_node(const __container_value_type& __v); + __node_holder __construct_node_hash(size_t __hash, const __container_value_type& __v); +#endif + + + _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) {} + +#ifndef _LIBCPP_CXX03_LANG + 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 {} +#endif // _LIBCPP_CXX03_LANG + + void __deallocate_node(__next_pointer __np) _NOEXCEPT; + __next_pointer __detach() _NOEXCEPT; + + template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_map; + template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_multimap; +}; + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline +__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<__node_allocator>::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 +__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_(__second_tag(), __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_(__second_tag(), __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_(__second_tag(), 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_(__second_tag(), __node_allocator(__a)), + __p2_(0, __u.hash_function()), + __p3_(__u.__p3_) +{ +} + +#ifndef _LIBCPP_CXX03_LANG + +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<__node_allocator>::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_[__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + __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_(__second_tag(), __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_[__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + size() = __u.size(); + __u.size() = 0; + } + } +} + +#endif // _LIBCPP_CXX03_LANG + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::~__hash_table() +{ +#if defined(_LIBCPP_CXX03_LANG) + static_assert((is_copy_constructible<key_equal>::value), + "Predicate must be copy-constructible."); + static_assert((is_copy_constructible<hasher>::value), + "Hasher must be copy-constructible."); +#endif + + __deallocate_node(__p1_.first().__next_); +#if _LIBCPP_DEBUG_LEVEL >= 2 + __get_db()->__erase_c(this); +#endif +} + +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(__next_pointer __np) + _NOEXCEPT +{ + __node_allocator& __na = __node_alloc(); + while (__np != nullptr) + { + __next_pointer __next = __np->__next_; +#if _LIBCPP_DEBUG_LEVEL >= 2 + __c_node* __c = __get_db()->__find_c_and_lock(this); + for (__i_node** __p = __c->end_; __p != __c->beg_; ) + { + --__p; + iterator* __i = static_cast<iterator*>((*__p)->__i_); + if (__i->__node_ == __np) + { + (*__p)->__c_ = nullptr; + if (--__c->end_ != __p) + memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*)); + } + } + __get_db()->unlock(); +#endif + __node_pointer __real_np = __np->__upcast(); + __node_traits::destroy(__na, _NodeTypes::__get_ptr(__real_np->__value_)); + __node_traits::deallocate(__na, __real_np, 1); + __np = __next; + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__next_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; + __next_pointer __cache = __p1_.first().__next_; + __p1_.first().__next_ = nullptr; + return __cache; +} + +#ifndef _LIBCPP_CXX03_LANG + +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_[__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + __u.__p1_.first().__next_ = nullptr; + __u.size() = 0; + } +#if _LIBCPP_DEBUG_LEVEL >= 2 + __get_db()->swap(this, &__u); +#endif +} + +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) + { + __next_pointer __cache = __detach(); +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + const_iterator __i = __u.begin(); + while (__cache != nullptr && __u.size() != 0) + { + __cache->__upcast()->__value_ = + _VSTD::move(__u.remove(__i++)->__value_); + __next_pointer __next = __cache->__next_; + __node_insert_multi(__cache->__upcast()); + __cache = __next; + } +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __deallocate_node(__cache); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS + __deallocate_node(__cache); + } + const_iterator __i = __u.begin(); + while (__u.size() != 0) + { + __node_holder __h = __construct_node(_NodeTypes::__move(__u.remove(__i++)->__value_)); + __node_insert_multi(__h.get()); + __h.release(); + } + } +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline +__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_CXX03_LANG + +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) +{ + typedef iterator_traits<_InputIterator> _ITraits; + typedef typename _ITraits::value_type _ItValueType; + static_assert((is_same<_ItValueType, __container_value_type>::value), + "__assign_unique may only be called with the containers value type"); + + if (bucket_count() != 0) + { + __next_pointer __cache = __detach(); +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + for (; __cache != nullptr && __first != __last; ++__first) + { + __cache->__upcast()->__value_ = *__first; + __next_pointer __next = __cache->__next_; + __node_insert_unique(__cache->__upcast()); + __cache = __next; + } +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __deallocate_node(__cache); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS + __deallocate_node(__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) +{ + typedef iterator_traits<_InputIterator> _ITraits; + typedef typename _ITraits::value_type _ItValueType; + static_assert((is_same<_ItValueType, __container_value_type>::value || + is_same<_ItValueType, __node_value_type>::value), + "__assign_multi may only be called with the containers value type" + " or the nodes value type"); + if (bucket_count() != 0) + { + __next_pointer __cache = __detach(); +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + for (; __cache != nullptr && __first != __last; ++__first) + { + __cache->__upcast()->__value_ = *__first; + __next_pointer __next = __cache->__next_; + __node_insert_multi(__cache->__upcast()); + __cache = __next; + } +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + __deallocate_node(__cache); + throw; + } +#endif // _LIBCPP_NO_EXCEPTIONS + __deallocate_node(__cache); + } + for (; __first != __last; ++__first) + __insert_multi(_NodeTypes::__get_value(*__first)); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::begin() _NOEXCEPT +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + return iterator(__p1_.first().__next_, this); +#else + return iterator(__p1_.first().__next_); +#endif +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::end() _NOEXCEPT +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + return iterator(nullptr, this); +#else + return iterator(nullptr); +#endif +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::begin() const _NOEXCEPT +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + return const_iterator(__p1_.first().__next_, this); +#else + return const_iterator(__p1_.first().__next_); +#endif +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +inline +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::const_iterator +__hash_table<_Tp, _Hash, _Equal, _Alloc>::end() const _NOEXCEPT +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + return const_iterator(nullptr, this); +#else + return const_iterator(nullptr); +#endif +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::clear() _NOEXCEPT +{ + if (size() > 0) + { + __deallocate_node(__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; + __next_pointer __ndptr; + size_t __chash; + if (__bc != 0) + { + __chash = __constrain_hash(__nd->__hash_, __bc); + __ndptr = __bucket_list_[__chash]; + if (__ndptr != nullptr) + { + for (__ndptr = __ndptr->__next_; __ndptr != nullptr && + __constrain_hash(__ndptr->__hash(), __bc) == __chash; + __ndptr = __ndptr->__next_) + { + if (key_eq()(__ndptr->__upcast()->__value_, __nd->__value_)) + goto __done; + } + } + } + { + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + rehash(_VSTD::max<size_type>(2 * __bc + !__is_hash_power2(__bc), + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + __chash = __constrain_hash(__nd->__hash_, __bc); + } + // insert_after __bucket_list_[__chash], or __first_node if bucket is null + __next_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn =__p1_.first().__ptr(); + __nd->__next_ = __pn->__next_; + __pn->__next_ = __nd->__ptr(); + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__nd->__next_ != nullptr) + __bucket_list_[__constrain_hash(__nd->__next_->__hash(), __bc)] = __nd->__ptr(); + } + else + { + __nd->__next_ = __pn->__next_; + __pn->__next_ = __nd->__ptr(); + } + __ndptr = __nd->__ptr(); + // increment size + ++size(); + __inserted = true; + } +__done: +#if _LIBCPP_DEBUG_LEVEL >= 2 + return pair<iterator, bool>(iterator(__ndptr, this), __inserted); +#else + return pair<iterator, bool>(iterator(__ndptr), __inserted); +#endif +} + +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 + !__is_hash_power2(__bc), + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + } + size_t __chash = __constrain_hash(__cp->__hash_, __bc); + __next_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn =__p1_.first().__ptr(); + __cp->__next_ = __pn->__next_; + __pn->__next_ = __cp->__ptr(); + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__cp->__next_ != nullptr) + __bucket_list_[__constrain_hash(__cp->__next_->__hash(), __bc)] + = __cp->__ptr(); + } + else + { + for (bool __found = false; __pn->__next_ != nullptr && + __constrain_hash(__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_->__upcast()->__value_, __cp->__value_))) + { + if (!__found) + __found = true; + else + break; + } + } + __cp->__next_ = __pn->__next_; + __pn->__next_ = __cp->__ptr(); + if (__cp->__next_ != nullptr) + { + size_t __nhash = __constrain_hash(__cp->__next_->__hash(), __bc); + if (__nhash != __chash) + __bucket_list_[__nhash] = __cp->__ptr(); + } + } + ++size(); +#if _LIBCPP_DEBUG_LEVEL >= 2 + return iterator(__cp->__ptr(), this); +#else + return iterator(__cp->__ptr()); +#endif +} + +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 _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this, + "unordered container::emplace_hint(const_iterator, args...) called with an iterator not" + " referring to this unordered container"); +#endif + if (__p != end() && key_eq()(*__p, __cp->__value_)) + { + __next_pointer __np = __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 + !__is_hash_power2(__bc), + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + } + size_t __chash = __constrain_hash(__cp->__hash_, __bc); + __next_pointer __pp = __bucket_list_[__chash]; + while (__pp->__next_ != __np) + __pp = __pp->__next_; + __cp->__next_ = __np; + __pp->__next_ = static_cast<__next_pointer>(__cp); + ++size(); +#if _LIBCPP_DEBUG_LEVEL >= 2 + return iterator(static_cast<__next_pointer>(__cp), this); +#else + return iterator(static_cast<__next_pointer>(__cp)); +#endif + } + return __node_insert_multi(__cp); +} + + + +#ifndef _LIBCPP_CXX03_LANG +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key, class ..._Args> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_unique_key_args(_Key const& __k, _Args&&... __args) +#else +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key, class _Args> +pair<typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator, bool> +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__emplace_unique_key_args(_Key const& __k, _Args& __args) +#endif +{ + + size_t __hash = hash_function()(__k); + size_type __bc = bucket_count(); + bool __inserted = false; + __next_pointer __nd; + size_t __chash; + if (__bc != 0) + { + __chash = __constrain_hash(__hash, __bc); + __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + (__nd->__hash() == __hash || __constrain_hash(__nd->__hash(), __bc) == __chash); + __nd = __nd->__next_) + { + if (key_eq()(__nd->__upcast()->__value_, __k)) + goto __done; + } + } + } + { +#ifndef _LIBCPP_CXX03_LANG + __node_holder __h = __construct_node_hash(__hash, _VSTD::forward<_Args>(__args)...); +#else + __node_holder __h = __construct_node_hash(__hash, __args); +#endif + if (size()+1 > __bc * max_load_factor() || __bc == 0) + { + rehash(_VSTD::max<size_type>(2 * __bc + !__is_hash_power2(__bc), + size_type(ceil(float(size() + 1) / max_load_factor())))); + __bc = bucket_count(); + __chash = __constrain_hash(__hash, __bc); + } + // insert_after __bucket_list_[__chash], or __first_node if bucket is null + __next_pointer __pn = __bucket_list_[__chash]; + if (__pn == nullptr) + { + __pn = __p1_.first().__ptr(); + __h->__next_ = __pn->__next_; + __pn->__next_ = __h.get()->__ptr(); + // fix up __bucket_list_ + __bucket_list_[__chash] = __pn; + if (__h->__next_ != nullptr) + __bucket_list_[__constrain_hash(__h->__next_->__hash(), __bc)] + = __h.get()->__ptr(); + } + else + { + __h->__next_ = __pn->__next_; + __pn->__next_ = static_cast<__next_pointer>(__h.get()); + } + __nd = static_cast<__next_pointer>(__h.release()); + // increment size + ++size(); + __inserted = true; + } +__done: +#if _LIBCPP_DEBUG_LEVEL >= 2 + return pair<iterator, bool>(iterator(__nd, this), __inserted); +#else + return pair<iterator, bool>(iterator(__nd), __inserted); +#endif +} + +#ifndef _LIBCPP_CXX03_LANG + +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_impl(_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) +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this, + "unordered container::emplace_hint(const_iterator, args...) called with an iterator not" + " referring to this unordered container"); +#endif + __node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...); + iterator __r = __node_insert_multi(__p, __h.get()); + __h.release(); + return __r; +} + +#else // _LIBCPP_CXX03_LANG + +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 __container_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 __container_value_type& __x) +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this, + "unordered container::insert(const_iterator, lvalue) called with an iterator not" + " referring to this unordered container"); +#endif + __node_holder __h = __construct_node(__x); + iterator __r = __node_insert_multi(__p, __h.get()); + __h.release(); + return __r; +} + +#endif // _LIBCPP_CXX03_LANG + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +void +__hash_table<_Tp, _Hash, _Equal, _Alloc>::rehash(size_type __n) +{ + if (__n == 1) + __n = 2; + else if (__n & (__n - 1)) + __n = __next_prime(__n); + size_type __bc = bucket_count(); + if (__n > __bc) + __rehash(__n); + else if (__n < __bc) + { + __n = _VSTD::max<size_type> + ( + __n, + __is_hash_power2(__bc) ? __next_hash_pow2(size_t(ceil(float(size()) / max_load_factor()))) : + __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) +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + __get_db()->__invalidate_all(this); +#endif // _LIBCPP_DEBUG_LEVEL >= 2 + __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; + __next_pointer __pp = __p1_.first().__ptr(); + __next_pointer __cp = __pp->__next_; + if (__cp != nullptr) + { + size_type __chash = __constrain_hash(__cp->__hash(), __nbc); + __bucket_list_[__chash] = __pp; + size_type __phash = __chash; + for (__pp = __cp, __cp = __cp->__next_; __cp != nullptr; + __cp = __pp->__next_) + { + __chash = __constrain_hash(__cp->__hash(), __nbc); + if (__chash == __phash) + __pp = __cp; + else + { + if (__bucket_list_[__chash] == nullptr) + { + __bucket_list_[__chash] = __pp; + __pp = __cp; + __phash = __chash; + } + else + { + __next_pointer __np = __cp; + for (; __np->__next_ != nullptr && + key_eq()(__cp->__upcast()->__value_, + __np->__next_->__upcast()->__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 = __constrain_hash(__hash, __bc); + __next_pointer __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + (__nd->__hash() == __hash + || __constrain_hash(__nd->__hash(), __bc) == __chash); + __nd = __nd->__next_) + { + if ((__nd->__hash() == __hash) + && key_eq()(__nd->__upcast()->__value_, __k)) +#if _LIBCPP_DEBUG_LEVEL >= 2 + return iterator(__nd, this); +#else + return iterator(__nd); +#endif + } + } + } + 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 = __constrain_hash(__hash, __bc); + __next_pointer __nd = __bucket_list_[__chash]; + if (__nd != nullptr) + { + for (__nd = __nd->__next_; __nd != nullptr && + (__hash == __nd->__hash() + || __constrain_hash(__nd->__hash(), __bc) == __chash); + __nd = __nd->__next_) + { + if ((__nd->__hash() == __hash) + && key_eq()(__nd->__upcast()->__value_, __k)) +#if _LIBCPP_DEBUG_LEVEL >= 2 + return const_iterator(__nd, this); +#else + return const_iterator(__nd); +#endif + } + } + + } + return end(); +} + +#ifndef _LIBCPP_CXX03_LANG + +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) +{ + static_assert(!__is_hash_value_type<_Args...>::value, + "Construct cannot be called with a hash value type"); + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__value_), _VSTD::forward<_Args>(__args)...); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = hash_function()(__h->__value_); + __h->__next_ = nullptr; + return __h; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _First, class ..._Rest> +typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_holder +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__construct_node_hash( + size_t __hash, _First&& __f, _Rest&& ...__rest) +{ + static_assert(!__is_hash_value_type<_First, _Rest...>::value, + "Construct cannot be called with a hash value type"); + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__value_), + _VSTD::forward<_First>(__f), + _VSTD::forward<_Rest>(__rest)...); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = __hash; + __h->__next_ = nullptr; + return __h; +} + +#else // _LIBCPP_CXX03_LANG + +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 __container_value_type& __v) +{ + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__value_), __v); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = hash_function()(__h->__value_); + __h->__next_ = nullptr; + return _LIBCPP_EXPLICIT_MOVE(__h); // explicitly moved for C++03 +} + +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_hash(size_t __hash, + const __container_value_type& __v) +{ + __node_allocator& __na = __node_alloc(); + __node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na)); + __node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__value_), __v); + __h.get_deleter().__value_constructed = true; + __h->__hash_ = __hash; + __h->__next_ = nullptr; + return _LIBCPP_EXPLICIT_MOVE(__h); // explicitly moved for C++03 +} + +#endif // _LIBCPP_CXX03_LANG + +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) +{ + __next_pointer __np = __p.__node_; +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this, + "unordered container erase(iterator) called with an iterator not" + " referring to this container"); + _LIBCPP_ASSERT(__p != end(), + "unordered container erase(iterator) called with a non-dereferenceable iterator"); + iterator __r(__np, this); +#else + iterator __r(__np); +#endif + ++__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) +{ +#if _LIBCPP_DEBUG_LEVEL >= 2 + _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__first) == this, + "unodered container::erase(iterator, iterator) called with an iterator not" + " referring to this unodered container"); + _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__last) == this, + "unodered container::erase(iterator, iterator) called with an iterator not" + " referring to this unodered container"); +#endif + for (const_iterator __p = __first; __first != __last; __p = __first) + { + ++__first; + erase(__p); + } + __next_pointer __np = __last.__node_; +#if _LIBCPP_DEBUG_LEVEL >= 2 + return iterator (__np, this); +#else + return iterator (__np); +#endif +} + +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 + __next_pointer __cn = __p.__node_; + size_type __bc = bucket_count(); + size_t __chash = __constrain_hash(__cn->__hash(), __bc); + // find previous node + __next_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 == __p1_.first().__ptr() + || __constrain_hash(__pn->__hash(), __bc) != __chash) + { + if (__cn->__next_ == nullptr + || __constrain_hash(__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 = __constrain_hash(__cn->__next_->__hash(), __bc); + if (__nhash != __chash) + __bucket_list_[__nhash] = __pn; + } + // remove __cn + __pn->__next_ = __cn->__next_; + __cn->__next_ = nullptr; + --size(); +#if _LIBCPP_DEBUG_LEVEL >= 2 + __c_node* __c = __get_db()->__find_c_and_lock(this); + for (__i_node** __dp = __c->end_; __dp != __c->beg_; ) + { + --__dp; + iterator* __i = static_cast<iterator*>((*__dp)->__i_); + if (__i->__node_ == __cn) + { + (*__dp)->__c_ = nullptr; + if (--__c->end_ != __dp) + memmove(__dp, __dp+1, (__c->end_ - __dp)*sizeof(__i_node*)); + } + } + __get_db()->unlock(); +#endif + return __node_holder(__cn->__upcast(), _Dp(__node_alloc(), true)); +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +template <class _Key> +inline +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) +#if _LIBCPP_STD_VER <= 11 + _NOEXCEPT_DEBUG_( + __is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value + && (!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) + ) +#else + _NOEXCEPT_DEBUG_(__is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value) +#endif +{ + _LIBCPP_ASSERT(__node_traits::propagate_on_container_swap::value || + this->__node_alloc() == __u.__node_alloc(), + "list::swap: Either propagate_on_container_swap must be true" + " or the allocators must compare equal"); + { + __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_allocator(__bucket_list_.get_deleter().__alloc(), + __u.__bucket_list_.get_deleter().__alloc()); + __swap_allocator(__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_[__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] = + __p1_.first().__ptr(); + if (__u.size() > 0) + __u.__bucket_list_[__constrain_hash(__u.__p1_.first().__next_->__hash(), __u.bucket_count())] = + __u.__p1_.first().__ptr(); +#if _LIBCPP_DEBUG_LEVEL >= 2 + __get_db()->swap(this, &__u); +#endif +} + +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 +{ + _LIBCPP_ASSERT(__n < bucket_count(), + "unordered container::bucket_size(n) called with n >= bucket_count()"); + __next_pointer __np = __bucket_list_[__n]; + size_type __bc = bucket_count(); + size_type __r = 0; + if (__np != nullptr) + { + for (__np = __np->__next_; __np != nullptr && + __constrain_hash(__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); +} + +#if _LIBCPP_DEBUG_LEVEL >= 2 + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +bool +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__dereferenceable(const const_iterator* __i) const +{ + return __i->__node_ != nullptr; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +bool +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__decrementable(const const_iterator*) const +{ + return false; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +bool +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__addable(const const_iterator*, ptrdiff_t) const +{ + return false; +} + +template <class _Tp, class _Hash, class _Equal, class _Alloc> +bool +__hash_table<_Tp, _Hash, _Equal, _Alloc>::__subscriptable(const const_iterator*, ptrdiff_t) const +{ + return false; +} + +#endif // _LIBCPP_DEBUG_LEVEL >= 2 + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP__HASH_TABLE |