mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2024-11-23 13:50:11 +00:00
ba79fb2e1f
This patch removes undefined behavior in list and forward_list and __hash_table caused by improperly beginning and ending the lifetime of the various node classes. It allows removing the _LIBCPP_STANDALONE_DEBUG macro from these node types since we now properly begin and end their lifetime, meaning that we won't trip up constructor homing. See https://reviews.llvm.org/D98750 for more information on what prompted this patch. This commit re-applies0687e4d9f3, which had been reverted inb935882bdcbecause it broke the LLDB build. LLDB folks tell me I can go ahead and re-commit this now. Differential Revision: https://reviews.llvm.org/D101206 Co-authored-by: Amy Kwan <amy.kwan1@ibm.com>
2524 lines
91 KiB
C++
2524 lines
91 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___HASH_TABLE
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#define _LIBCPP___HASH_TABLE
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#include <__algorithm/max.h>
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#include <__algorithm/min.h>
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#include <__assert>
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#include <__bit/countl.h>
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#include <__config>
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#include <__functional/hash.h>
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#include <__functional/invoke.h>
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#include <__iterator/iterator_traits.h>
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#include <__memory/addressof.h>
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#include <__memory/allocator_traits.h>
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#include <__memory/compressed_pair.h>
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#include <__memory/construct_at.h>
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#include <__memory/pointer_traits.h>
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#include <__memory/swap_allocator.h>
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#include <__memory/unique_ptr.h>
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#include <__type_traits/can_extract_key.h>
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#include <__type_traits/conditional.h>
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#include <__type_traits/is_const.h>
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#include <__type_traits/is_copy_constructible.h>
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#include <__type_traits/is_nothrow_constructible.h>
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#include <__type_traits/is_nothrow_copy_constructible.h>
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#include <__type_traits/is_nothrow_default_constructible.h>
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#include <__type_traits/is_nothrow_move_assignable.h>
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#include <__type_traits/is_nothrow_move_constructible.h>
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#include <__type_traits/is_pointer.h>
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#include <__type_traits/is_reference.h>
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#include <__type_traits/is_swappable.h>
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#include <__type_traits/remove_const.h>
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#include <__type_traits/remove_cvref.h>
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#include <__utility/forward.h>
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#include <__utility/move.h>
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#include <__utility/pair.h>
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#include <__utility/swap.h>
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#include <cmath>
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#include <cstring>
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#include <initializer_list>
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#include <new> // __launder
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Key, class _Tp>
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struct __hash_value_type;
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template <class _Tp>
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struct __is_hash_value_type_imp : false_type {};
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template <class _Key, class _Value>
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struct __is_hash_value_type_imp<__hash_value_type<_Key, _Value> > : true_type {};
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template <class ..._Args>
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struct __is_hash_value_type : false_type {};
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template <class _One>
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struct __is_hash_value_type<_One> : __is_hash_value_type_imp<__remove_cvref_t<_One> > {};
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_LIBCPP_EXPORTED_FROM_ABI size_t __next_prime(size_t __n);
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template <class _NodePtr>
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struct __hash_node_base
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{
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typedef typename pointer_traits<_NodePtr>::element_type __node_type;
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typedef __hash_node_base __first_node;
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typedef __rebind_pointer_t<_NodePtr, __first_node> __node_base_pointer;
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typedef _NodePtr __node_pointer;
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#if defined(_LIBCPP_ABI_FIX_UNORDERED_NODE_POINTER_UB)
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typedef __node_base_pointer __next_pointer;
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#else
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typedef __conditional_t<is_pointer<__node_pointer>::value, __node_base_pointer, __node_pointer> __next_pointer;
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#endif
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__next_pointer __next_;
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_LIBCPP_INLINE_VISIBILITY
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__next_pointer __ptr() _NOEXCEPT {
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return static_cast<__next_pointer>(
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pointer_traits<__node_base_pointer>::pointer_to(*this));
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}
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_LIBCPP_INLINE_VISIBILITY
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__node_pointer __upcast() _NOEXCEPT {
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return static_cast<__node_pointer>(
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pointer_traits<__node_base_pointer>::pointer_to(*this));
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}
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_LIBCPP_INLINE_VISIBILITY
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size_t __hash() const _NOEXCEPT {
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return static_cast<__node_type const&>(*this).__hash_;
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}
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_LIBCPP_INLINE_VISIBILITY __hash_node_base() _NOEXCEPT : __next_(nullptr) {}
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_LIBCPP_HIDE_FROM_ABI explicit __hash_node_base(__next_pointer __next) _NOEXCEPT : __next_(__next) {}
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};
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template <class _Tp, class _VoidPtr>
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struct __hash_node
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: public __hash_node_base
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<
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__rebind_pointer_t<_VoidPtr, __hash_node<_Tp, _VoidPtr> >
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>
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{
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typedef _Tp __node_value_type;
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using _Base = __hash_node_base<__rebind_pointer_t<_VoidPtr, __hash_node<_Tp, _VoidPtr> > >;
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using __next_pointer = typename _Base::__next_pointer;
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size_t __hash_;
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// We allow starting the lifetime of nodes without initializing the value held by the node,
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// since that is handled by the hash table itself in order to be allocator-aware.
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#ifndef _LIBCPP_CXX03_LANG
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private:
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union {
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_Tp __value_;
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};
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public:
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_LIBCPP_HIDE_FROM_ABI _Tp& __get_value() { return __value_; }
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#else
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private:
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_ALIGNAS_TYPE(_Tp) char __buffer_[sizeof(_Tp)];
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public:
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_LIBCPP_HIDE_FROM_ABI _Tp& __get_value() {
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return *std::__launder(reinterpret_cast<_Tp*>(&__buffer_));
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}
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#endif
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_LIBCPP_HIDE_FROM_ABI explicit __hash_node(__next_pointer __next, size_t __hash) : _Base(__next), __hash_(__hash) {}
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_LIBCPP_HIDE_FROM_ABI ~__hash_node() {}
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};
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inline _LIBCPP_INLINE_VISIBILITY
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bool
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__is_hash_power2(size_t __bc)
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{
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return __bc > 2 && !(__bc & (__bc - 1));
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}
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inline _LIBCPP_INLINE_VISIBILITY
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size_t
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__constrain_hash(size_t __h, size_t __bc)
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{
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return !(__bc & (__bc - 1)) ? __h & (__bc - 1) :
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(__h < __bc ? __h : __h % __bc);
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}
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inline _LIBCPP_INLINE_VISIBILITY
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size_t
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__next_hash_pow2(size_t __n)
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{
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return __n < 2 ? __n : (size_t(1) << (numeric_limits<size_t>::digits - __libcpp_clz(__n-1)));
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}
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template <class _Tp, class _Hash, class _Equal, class _Alloc> class __hash_table;
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template <class _NodePtr> class _LIBCPP_TEMPLATE_VIS __hash_iterator;
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template <class _ConstNodePtr> class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
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template <class _NodePtr> class _LIBCPP_TEMPLATE_VIS __hash_local_iterator;
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template <class _ConstNodePtr> class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator;
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template <class _HashIterator> class _LIBCPP_TEMPLATE_VIS __hash_map_iterator;
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template <class _HashIterator> class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator;
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template <class _Tp>
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struct __hash_key_value_types {
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static_assert(!is_reference<_Tp>::value && !is_const<_Tp>::value, "");
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typedef _Tp key_type;
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typedef _Tp __node_value_type;
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typedef _Tp __container_value_type;
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static const bool __is_map = false;
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_LIBCPP_INLINE_VISIBILITY
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static key_type const& __get_key(_Tp const& __v) {
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return __v;
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}
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_LIBCPP_INLINE_VISIBILITY
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static __container_value_type const& __get_value(__node_value_type const& __v) {
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return __v;
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}
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_LIBCPP_INLINE_VISIBILITY
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static __container_value_type* __get_ptr(__node_value_type& __n) {
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return _VSTD::addressof(__n);
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}
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_LIBCPP_INLINE_VISIBILITY
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static __container_value_type&& __move(__node_value_type& __v) {
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return _VSTD::move(__v);
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}
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};
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template <class _Key, class _Tp>
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struct __hash_key_value_types<__hash_value_type<_Key, _Tp> > {
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typedef _Key key_type;
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typedef _Tp mapped_type;
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typedef __hash_value_type<_Key, _Tp> __node_value_type;
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typedef pair<const _Key, _Tp> __container_value_type;
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typedef __container_value_type __map_value_type;
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static const bool __is_map = true;
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_LIBCPP_INLINE_VISIBILITY
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static key_type const& __get_key(__container_value_type const& __v) {
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return __v.first;
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}
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template <class _Up, __enable_if_t<__is_same_uncvref<_Up, __node_value_type>::value, int> = 0>
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_LIBCPP_INLINE_VISIBILITY
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static __container_value_type const&
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__get_value(_Up& __t) {
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return __t.__get_value();
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}
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template <class _Up, __enable_if_t<__is_same_uncvref<_Up, __container_value_type>::value, int> = 0>
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_LIBCPP_INLINE_VISIBILITY
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static __container_value_type const&
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__get_value(_Up& __t) {
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return __t;
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}
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_LIBCPP_INLINE_VISIBILITY
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static __container_value_type* __get_ptr(__node_value_type& __n) {
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return _VSTD::addressof(__n.__get_value());
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}
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_LIBCPP_INLINE_VISIBILITY
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static pair<key_type&&, mapped_type&&> __move(__node_value_type& __v) {
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return __v.__move();
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}
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};
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template <class _Tp, class _AllocPtr, class _KVTypes = __hash_key_value_types<_Tp>,
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bool = _KVTypes::__is_map>
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struct __hash_map_pointer_types {};
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template <class _Tp, class _AllocPtr, class _KVTypes>
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struct __hash_map_pointer_types<_Tp, _AllocPtr, _KVTypes, true> {
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typedef typename _KVTypes::__map_value_type _Mv;
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typedef __rebind_pointer_t<_AllocPtr, _Mv>
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__map_value_type_pointer;
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typedef __rebind_pointer_t<_AllocPtr, const _Mv>
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__const_map_value_type_pointer;
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};
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template <class _NodePtr, class _NodeT = typename pointer_traits<_NodePtr>::element_type>
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struct __hash_node_types;
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template <class _NodePtr, class _Tp, class _VoidPtr>
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struct __hash_node_types<_NodePtr, __hash_node<_Tp, _VoidPtr> >
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: public __hash_key_value_types<_Tp>, __hash_map_pointer_types<_Tp, _VoidPtr>
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{
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typedef __hash_key_value_types<_Tp> __base;
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public:
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typedef ptrdiff_t difference_type;
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typedef size_t size_type;
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typedef __rebind_pointer_t<_NodePtr, void> __void_pointer;
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typedef typename pointer_traits<_NodePtr>::element_type __node_type;
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typedef _NodePtr __node_pointer;
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typedef __hash_node_base<__node_pointer> __node_base_type;
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typedef __rebind_pointer_t<_NodePtr, __node_base_type>
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__node_base_pointer;
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typedef typename __node_base_type::__next_pointer __next_pointer;
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typedef _Tp __node_value_type;
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typedef __rebind_pointer_t<_VoidPtr, __node_value_type>
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__node_value_type_pointer;
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typedef __rebind_pointer_t<_VoidPtr, const __node_value_type>
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__const_node_value_type_pointer;
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private:
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static_assert(!is_const<__node_type>::value,
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"_NodePtr should never be a pointer to const");
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static_assert((is_same<typename pointer_traits<_VoidPtr>::element_type, void>::value),
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"_VoidPtr does not point to unqualified void type");
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static_assert((is_same<__rebind_pointer_t<_VoidPtr, __node_type>,
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_NodePtr>::value), "_VoidPtr does not rebind to _NodePtr.");
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};
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template <class _HashIterator>
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struct __hash_node_types_from_iterator;
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template <class _NodePtr>
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struct __hash_node_types_from_iterator<__hash_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {};
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template <class _NodePtr>
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struct __hash_node_types_from_iterator<__hash_const_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {};
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template <class _NodePtr>
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struct __hash_node_types_from_iterator<__hash_local_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {};
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template <class _NodePtr>
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struct __hash_node_types_from_iterator<__hash_const_local_iterator<_NodePtr> > : __hash_node_types<_NodePtr> {};
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template <class _NodeValueTp, class _VoidPtr>
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struct __make_hash_node_types {
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typedef __hash_node<_NodeValueTp, _VoidPtr> _NodeTp;
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typedef __rebind_pointer_t<_VoidPtr, _NodeTp> _NodePtr;
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typedef __hash_node_types<_NodePtr> type;
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};
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template <class _NodePtr>
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class _LIBCPP_TEMPLATE_VIS __hash_iterator
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{
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typedef __hash_node_types<_NodePtr> _NodeTypes;
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typedef _NodePtr __node_pointer;
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typedef typename _NodeTypes::__next_pointer __next_pointer;
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__next_pointer __node_;
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public:
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typedef forward_iterator_tag iterator_category;
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typedef typename _NodeTypes::__node_value_type value_type;
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typedef typename _NodeTypes::difference_type difference_type;
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typedef value_type& reference;
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typedef typename _NodeTypes::__node_value_type_pointer pointer;
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_LIBCPP_INLINE_VISIBILITY __hash_iterator() _NOEXCEPT : __node_(nullptr) {
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}
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_LIBCPP_INLINE_VISIBILITY
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reference operator*() const {
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return __node_->__upcast()->__get_value();
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}
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_LIBCPP_INLINE_VISIBILITY
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pointer operator->() const {
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return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__get_value());
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}
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_LIBCPP_INLINE_VISIBILITY
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__hash_iterator& operator++() {
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__node_ = __node_->__next_;
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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__hash_iterator operator++(int)
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{
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__hash_iterator __t(*this);
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++(*this);
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return __t;
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}
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friend _LIBCPP_INLINE_VISIBILITY
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bool operator==(const __hash_iterator& __x, const __hash_iterator& __y)
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{
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return __x.__node_ == __y.__node_;
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}
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friend _LIBCPP_INLINE_VISIBILITY
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bool operator!=(const __hash_iterator& __x, const __hash_iterator& __y)
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{return !(__x == __y);}
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private:
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_LIBCPP_INLINE_VISIBILITY
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explicit __hash_iterator(__next_pointer __node) _NOEXCEPT
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: __node_(__node)
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{
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}
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template <class, class, class, class> friend class __hash_table;
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template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
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template <class> friend class _LIBCPP_TEMPLATE_VIS __hash_map_iterator;
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template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_map;
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template <class, class, class, class, class> friend class _LIBCPP_TEMPLATE_VIS unordered_multimap;
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};
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template <class _NodePtr>
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class _LIBCPP_TEMPLATE_VIS __hash_const_iterator
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{
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static_assert(!is_const<typename pointer_traits<_NodePtr>::element_type>::value, "");
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typedef __hash_node_types<_NodePtr> _NodeTypes;
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typedef _NodePtr __node_pointer;
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typedef typename _NodeTypes::__next_pointer __next_pointer;
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__next_pointer __node_;
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public:
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typedef __hash_iterator<_NodePtr> __non_const_iterator;
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typedef forward_iterator_tag iterator_category;
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typedef typename _NodeTypes::__node_value_type value_type;
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typedef typename _NodeTypes::difference_type difference_type;
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typedef const value_type& reference;
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typedef typename _NodeTypes::__const_node_value_type_pointer pointer;
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_LIBCPP_INLINE_VISIBILITY __hash_const_iterator() _NOEXCEPT : __node_(nullptr) {
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}
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_LIBCPP_INLINE_VISIBILITY
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__hash_const_iterator(const __non_const_iterator& __x) _NOEXCEPT
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: __node_(__x.__node_)
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{
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}
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_LIBCPP_INLINE_VISIBILITY
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reference operator*() const {
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return __node_->__upcast()->__get_value();
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}
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_LIBCPP_INLINE_VISIBILITY
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pointer operator->() const {
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return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__get_value());
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}
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_LIBCPP_INLINE_VISIBILITY
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__hash_const_iterator& operator++() {
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__node_ = __node_->__next_;
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY
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__hash_const_iterator operator++(int)
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{
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__hash_const_iterator __t(*this);
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++(*this);
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return __t;
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}
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friend _LIBCPP_INLINE_VISIBILITY
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bool operator==(const __hash_const_iterator& __x, const __hash_const_iterator& __y)
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{
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return __x.__node_ == __y.__node_;
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}
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friend _LIBCPP_INLINE_VISIBILITY
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bool operator!=(const __hash_const_iterator& __x, const __hash_const_iterator& __y)
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{return !(__x == __y);}
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private:
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_LIBCPP_INLINE_VISIBILITY
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explicit __hash_const_iterator(__next_pointer __node) _NOEXCEPT
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: __node_(__node)
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{
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}
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template <class, class, class, class> friend class __hash_table;
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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_INLINE_VISIBILITY
|
|
reference operator*() const {
|
|
return __node_->__upcast()->__get_value();
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
pointer operator->() const {
|
|
return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__get_value());
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__hash_local_iterator& operator++() {
|
|
__node_ = __node_->__next_;
|
|
if (__node_ != nullptr && std::__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:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit __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_;
|
|
}
|
|
|
|
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 __remove_const_t<__node> __non_const_node;
|
|
typedef __rebind_pointer_t<__node_pointer, __non_const_node>
|
|
__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_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_->__upcast()->__get_value();
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
pointer operator->() const {
|
|
return pointer_traits<pointer>::pointer_to(__node_->__upcast()->__get_value());
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__hash_const_local_iterator& operator++() {
|
|
__node_ = __node_->__next_;
|
|
if (__node_ != nullptr && std::__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:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
explicit __hash_const_local_iterator(__next_pointer __node_ptr, size_t __bucket,
|
|
size_t __bucket_count) _NOEXCEPT
|
|
: __node_(__node_ptr),
|
|
__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_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, __default_init_tag()) {}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__bucket_list_deallocator(const allocator_type& __a, size_type __size)
|
|
_NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
|
|
: __data_(__size, __a) {}
|
|
|
|
_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;
|
|
}
|
|
|
|
_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_;
|
|
|
|
public:
|
|
bool __value_constructed;
|
|
|
|
_LIBCPP_HIDE_FROM_ABI __hash_node_destructor(__hash_node_destructor const&) = default;
|
|
_LIBCPP_HIDE_FROM_ABI __hash_node_destructor& operator=(const __hash_node_destructor&) = delete;
|
|
|
|
|
|
_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->__get_value()));
|
|
std::__destroy_at(std::addressof(*__p));
|
|
}
|
|
if (__p)
|
|
__alloc_traits::deallocate(__na_, __p, 1);
|
|
}
|
|
|
|
template <class> friend class __hash_map_node_destructor;
|
|
};
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
template <class _NodeType, class _Alloc>
|
|
struct __generic_container_node_destructor;
|
|
|
|
template <class _Tp, class _VoidPtr, class _Alloc>
|
|
struct __generic_container_node_destructor<__hash_node<_Tp, _VoidPtr>, _Alloc>
|
|
: __hash_node_destructor<_Alloc>
|
|
{
|
|
using __hash_node_destructor<_Alloc>::__hash_node_destructor;
|
|
};
|
|
#endif
|
|
|
|
template <class _Key, class _Hash, class _Equal>
|
|
struct __enforce_unordered_container_requirements {
|
|
#ifndef _LIBCPP_CXX03_LANG
|
|
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");
|
|
#endif
|
|
typedef int type;
|
|
};
|
|
|
|
template <class _Key, class _Hash, class _Equal>
|
|
#ifndef _LIBCPP_CXX03_LANG
|
|
_LIBCPP_DIAGNOSE_WARNING(!__invokable<_Equal const&, _Key const&, _Key const&>::value,
|
|
"the specified comparator type does not provide a viable const call operator")
|
|
_LIBCPP_DIAGNOSE_WARNING(!__invokable<_Hash const&, _Key const&>::value,
|
|
"the specified hash functor does not provide a viable const call operator")
|
|
#endif
|
|
typename __enforce_unordered_container_requirements<_Key, _Hash, _Equal>::type
|
|
__diagnose_unordered_container_requirements(int);
|
|
|
|
// This dummy overload is used so that the compiler won't emit a spurious
|
|
// "no matching function for call to __diagnose_unordered_xxx" diagnostic
|
|
// when the overload above causes a hard error.
|
|
template <class _Key, class _Hash, class _Equal>
|
|
int __diagnose_unordered_container_requirements(void*);
|
|
|
|
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 __rebind_alloc<__alloc_traits, __node> __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 __rebind_alloc<__node_traits, __first_node> __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 __rebind_alloc<__node_traits, __next_pointer> __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;
|
|
|
|
// --- 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);
|
|
_LIBCPP_HIDE_FROM_ABI __hash_table(const hasher& __hf, const key_equal& __eql,
|
|
const allocator_type& __a);
|
|
_LIBCPP_HIDE_FROM_ABI explicit __hash_table(const allocator_type& __a);
|
|
_LIBCPP_HIDE_FROM_ABI __hash_table(const __hash_table& __u);
|
|
_LIBCPP_HIDE_FROM_ABI __hash_table(const __hash_table& __u, const allocator_type& __a);
|
|
_LIBCPP_HIDE_FROM_ABI __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);
|
|
_LIBCPP_HIDE_FROM_ABI __hash_table(__hash_table&& __u, const allocator_type& __a);
|
|
_LIBCPP_HIDE_FROM_ABI ~__hash_table();
|
|
|
|
_LIBCPP_HIDE_FROM_ABI __hash_table& operator=(const __hash_table& __u);
|
|
_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);
|
|
template <class _InputIterator>
|
|
_LIBCPP_HIDE_FROM_ABI void __assign_unique(_InputIterator __first, _InputIterator __last);
|
|
template <class _InputIterator>
|
|
_LIBCPP_HIDE_FROM_ABI void __assign_multi(_InputIterator __first, _InputIterator __last);
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
size_type max_size() const _NOEXCEPT
|
|
{
|
|
return _VSTD::min<size_type>(
|
|
__node_traits::max_size(__node_alloc()),
|
|
numeric_limits<difference_type >::max()
|
|
);
|
|
}
|
|
|
|
private:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__next_pointer __node_insert_multi_prepare(size_t __cp_hash,
|
|
value_type& __cp_val);
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void __node_insert_multi_perform(__node_pointer __cp,
|
|
__next_pointer __pn) _NOEXCEPT;
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
__next_pointer __node_insert_unique_prepare(size_t __nd_hash,
|
|
value_type& __nd_val);
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void __node_insert_unique_perform(__node_pointer __ptr) _NOEXCEPT;
|
|
|
|
public:
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
pair<iterator, bool> __node_insert_unique(__node_pointer __nd);
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
iterator __node_insert_multi(__node_pointer __nd);
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
iterator __node_insert_multi(const_iterator __p,
|
|
__node_pointer __nd);
|
|
|
|
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,
|
|
__enable_if_t<__can_extract_map_key<_First, key_type, __container_value_type>::value, int> = 0>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
pair<iterator, bool>
|
|
__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 = __enable_if_t<!__is_same_uncvref<_Pp, __container_value_type>::value> >
|
|
_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));
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
pair<iterator, bool> __insert_unique(const __container_value_type& __x) {
|
|
return __emplace_unique_key_args(_NodeTypes::__get_key(__x), __x);
|
|
}
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
template <class _NodeHandle, class _InsertReturnType>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_InsertReturnType __node_handle_insert_unique(_NodeHandle&& __nh);
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
iterator __node_handle_insert_unique(const_iterator __hint,
|
|
_NodeHandle&& __nh);
|
|
template <class _Table>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void __node_handle_merge_unique(_Table& __source);
|
|
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
iterator __node_handle_insert_multi(_NodeHandle&& __nh);
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
iterator __node_handle_insert_multi(const_iterator __hint, _NodeHandle&& __nh);
|
|
template <class _Table>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void __node_handle_merge_multi(_Table& __source);
|
|
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_NodeHandle __node_handle_extract(key_type const& __key);
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_NodeHandle __node_handle_extract(const_iterator __it);
|
|
#endif
|
|
|
|
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT;
|
|
_LIBCPP_INLINE_VISIBILITY void __rehash_unique(size_type __n) { __rehash<true>(__n); }
|
|
_LIBCPP_INLINE_VISIBILITY void __rehash_multi(size_type __n) { __rehash<false>(__n); }
|
|
_LIBCPP_INLINE_VISIBILITY void __reserve_unique(size_type __n)
|
|
{
|
|
__rehash_unique(static_cast<size_type>(std::ceil(__n / max_load_factor())));
|
|
}
|
|
_LIBCPP_INLINE_VISIBILITY void __reserve_multi(size_type __n)
|
|
{
|
|
__rehash_multi(static_cast<size_type>(std::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_UNCATEGORIZED(bucket_count() > 0,
|
|
"unordered container::bucket(key) called when bucket_count() == 0");
|
|
return std::__constrain_hash(hash_function()(__k), bucket_count());
|
|
}
|
|
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI iterator find(const _Key& __x);
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI const_iterator find(const _Key& __x) const;
|
|
|
|
typedef __hash_node_destructor<__node_allocator> _Dp;
|
|
typedef unique_ptr<__node, _Dp> __node_holder;
|
|
|
|
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p);
|
|
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last);
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI size_type __erase_unique(const _Key& __k);
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI size_type __erase_multi(const _Key& __k);
|
|
_LIBCPP_HIDE_FROM_ABI __node_holder remove(const_iterator __p) _NOEXCEPT;
|
|
|
|
template <class _Key>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
size_type __count_unique(const _Key& __k) const;
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI size_type __count_multi(const _Key& __k) const;
|
|
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator>
|
|
__equal_range_unique(const _Key& __k);
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator>
|
|
__equal_range_unique(const _Key& __k) const;
|
|
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator>
|
|
__equal_range_multi(const _Key& __k);
|
|
template <class _Key>
|
|
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator>
|
|
__equal_range_multi(const _Key& __k) const;
|
|
|
|
_LIBCPP_HIDE_FROM_ABI void swap(__hash_table& __u)
|
|
#if _LIBCPP_STD_VER <= 11
|
|
_NOEXCEPT_(
|
|
__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_(__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(); }
|
|
_LIBCPP_HIDE_FROM_ABI 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_UNCATEGORIZED(__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_VALID_ELEMENT_ACCESS(__n < bucket_count(),
|
|
"unordered container::begin(n) called with n >= bucket_count()");
|
|
return local_iterator(__bucket_list_[__n], __n, bucket_count());
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
local_iterator
|
|
end(size_type __n)
|
|
{
|
|
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(),
|
|
"unordered container::end(n) called with n >= bucket_count()");
|
|
return local_iterator(nullptr, __n, bucket_count());
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
const_local_iterator
|
|
cbegin(size_type __n) const
|
|
{
|
|
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(),
|
|
"unordered container::cbegin(n) called with n >= bucket_count()");
|
|
return const_local_iterator(__bucket_list_[__n], __n, bucket_count());
|
|
}
|
|
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
const_local_iterator
|
|
cend(size_type __n) const
|
|
{
|
|
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__n < bucket_count(),
|
|
"unordered container::cend(n) called with n >= bucket_count()");
|
|
return const_local_iterator(nullptr, __n, bucket_count());
|
|
}
|
|
|
|
private:
|
|
template <bool _UniqueKeys>
|
|
_LIBCPP_HIDE_FROM_ABI void __rehash(size_type __n);
|
|
template <bool _UniqueKeys>
|
|
_LIBCPP_HIDE_FROM_ABI void __do_rehash(size_type __n);
|
|
|
|
template <class ..._Args>
|
|
_LIBCPP_HIDE_FROM_ABI __node_holder __construct_node(_Args&& ...__args);
|
|
|
|
template <class _First, class ..._Rest>
|
|
_LIBCPP_HIDE_FROM_ABI __node_holder __construct_node_hash(size_t __hash, _First&& __f, _Rest&&... __rest);
|
|
|
|
|
|
_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>());}
|
|
_LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const __hash_table& __u, true_type);
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void __copy_assign_alloc(const __hash_table&, false_type) {}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI void __move_assign(__hash_table& __u, false_type);
|
|
_LIBCPP_HIDE_FROM_ABI 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 {}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI void __deallocate_node(__next_pointer __np) _NOEXCEPT;
|
|
_LIBCPP_HIDE_FROM_ABI __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, __default_init_tag()),
|
|
__p3_(1.0f, __default_init_tag())
|
|
{
|
|
}
|
|
|
|
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_(__default_init_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_(__default_init_tag(), __node_allocator(__a)),
|
|
__p2_(0, __default_init_tag()),
|
|
__p3_(1.0f, __default_init_tag())
|
|
{
|
|
}
|
|
|
|
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_(__default_init_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_(__default_init_tag(), __node_allocator(__a)),
|
|
__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(__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_[std::__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_(__default_init_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_[std::__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] =
|
|
__p1_.first().__ptr();
|
|
size() = __u.size();
|
|
__u.size() = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
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_);
|
|
}
|
|
|
|
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 != _VSTD::addressof(__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_;
|
|
__node_pointer __real_np = __np->__upcast();
|
|
__node_traits::destroy(__na, _NodeTypes::__get_ptr(__real_np->__get_value()));
|
|
std::__destroy_at(std::addressof(*__real_np));
|
|
__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;
|
|
}
|
|
|
|
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_[std::__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>
|
|
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_HAS_NO_EXCEPTIONS
|
|
try
|
|
{
|
|
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
|
|
const_iterator __i = __u.begin();
|
|
while (__cache != nullptr && __u.size() != 0)
|
|
{
|
|
__cache->__upcast()->__get_value() =
|
|
_VSTD::move(__u.remove(__i++)->__get_value());
|
|
__next_pointer __next = __cache->__next_;
|
|
__node_insert_multi(__cache->__upcast());
|
|
__cache = __next;
|
|
}
|
|
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
|
|
}
|
|
catch (...)
|
|
{
|
|
__deallocate_node(__cache);
|
|
throw;
|
|
}
|
|
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
|
|
__deallocate_node(__cache);
|
|
}
|
|
const_iterator __i = __u.begin();
|
|
while (__u.size() != 0)
|
|
{
|
|
__node_holder __h = __construct_node(_NodeTypes::__move(__u.remove(__i++)->__get_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;
|
|
}
|
|
|
|
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_HAS_NO_EXCEPTIONS
|
|
try
|
|
{
|
|
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
|
|
for (; __cache != nullptr && __first != __last; ++__first)
|
|
{
|
|
__cache->__upcast()->__get_value() = *__first;
|
|
__next_pointer __next = __cache->__next_;
|
|
__node_insert_unique(__cache->__upcast());
|
|
__cache = __next;
|
|
}
|
|
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
|
|
}
|
|
catch (...)
|
|
{
|
|
__deallocate_node(__cache);
|
|
throw;
|
|
}
|
|
#endif // _LIBCPP_HAS_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_HAS_NO_EXCEPTIONS
|
|
try
|
|
{
|
|
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
|
|
for (; __cache != nullptr && __first != __last; ++__first)
|
|
{
|
|
__cache->__upcast()->__get_value() = *__first;
|
|
__next_pointer __next = __cache->__next_;
|
|
__node_insert_multi(__cache->__upcast());
|
|
__cache = __next;
|
|
}
|
|
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
|
|
}
|
|
catch (...)
|
|
{
|
|
__deallocate_node(__cache);
|
|
throw;
|
|
}
|
|
#endif // _LIBCPP_HAS_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
|
|
{
|
|
return iterator(__p1_.first().__next_);
|
|
}
|
|
|
|
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
|
|
{
|
|
return iterator(nullptr);
|
|
}
|
|
|
|
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
|
|
{
|
|
return const_iterator(__p1_.first().__next_);
|
|
}
|
|
|
|
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
|
|
{
|
|
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_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;
|
|
}
|
|
}
|
|
|
|
|
|
// Prepare the container for an insertion of the value __value with the hash
|
|
// __hash. This does a lookup into the container to see if __value is already
|
|
// present, and performs a rehash if necessary. Returns a pointer to the
|
|
// existing element if it exists, otherwise nullptr.
|
|
//
|
|
// Note that this function does forward exceptions if key_eq() throws, and never
|
|
// mutates __value or actually inserts into the map.
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__next_pointer
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_unique_prepare(
|
|
size_t __hash, value_type& __value)
|
|
{
|
|
size_type __bc = bucket_count();
|
|
|
|
if (__bc != 0)
|
|
{
|
|
size_t __chash = std::__constrain_hash(__hash, __bc);
|
|
__next_pointer __ndptr = __bucket_list_[__chash];
|
|
if (__ndptr != nullptr)
|
|
{
|
|
for (__ndptr = __ndptr->__next_; __ndptr != nullptr &&
|
|
(__ndptr->__hash() == __hash ||
|
|
std::__constrain_hash(__ndptr->__hash(), __bc) == __chash);
|
|
__ndptr = __ndptr->__next_)
|
|
{
|
|
if ((__ndptr->__hash() == __hash) &&
|
|
key_eq()(__ndptr->__upcast()->__get_value(), __value))
|
|
return __ndptr;
|
|
}
|
|
}
|
|
}
|
|
if (size()+1 > __bc * max_load_factor() || __bc == 0)
|
|
{
|
|
__rehash_unique(_VSTD::max<size_type>(2 * __bc + !std::__is_hash_power2(__bc),
|
|
size_type(std::ceil(float(size() + 1) / max_load_factor()))));
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
// Insert the node __nd into the container by pushing it into the right bucket,
|
|
// and updating size(). Assumes that __nd->__hash is up-to-date, and that
|
|
// rehashing has already occurred and that no element with the same key exists
|
|
// in the map.
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_unique_perform(
|
|
__node_pointer __nd) _NOEXCEPT
|
|
{
|
|
size_type __bc = bucket_count();
|
|
size_t __chash = std::__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_[std::__constrain_hash(__nd->__next_->__hash(), __bc)] = __nd->__ptr();
|
|
}
|
|
else
|
|
{
|
|
__nd->__next_ = __pn->__next_;
|
|
__pn->__next_ = __nd->__ptr();
|
|
}
|
|
++size();
|
|
}
|
|
|
|
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->__get_value());
|
|
__next_pointer __existing_node =
|
|
__node_insert_unique_prepare(__nd->__hash(), __nd->__get_value());
|
|
|
|
// Insert the node, unless it already exists in the container.
|
|
bool __inserted = false;
|
|
if (__existing_node == nullptr)
|
|
{
|
|
__node_insert_unique_perform(__nd);
|
|
__existing_node = __nd->__ptr();
|
|
__inserted = true;
|
|
}
|
|
return pair<iterator, bool>(iterator(__existing_node), __inserted);
|
|
}
|
|
|
|
// Prepare the container for an insertion of the value __cp_val with the hash
|
|
// __cp_hash. This does a lookup into the container to see if __cp_value is
|
|
// already present, and performs a rehash if necessary. Returns a pointer to the
|
|
// last occurrence of __cp_val in the map.
|
|
//
|
|
// Note that this function does forward exceptions if key_eq() throws, and never
|
|
// mutates __value or actually inserts into the map.
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::__next_pointer
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi_prepare(
|
|
size_t __cp_hash, value_type& __cp_val)
|
|
{
|
|
size_type __bc = bucket_count();
|
|
if (size()+1 > __bc * max_load_factor() || __bc == 0)
|
|
{
|
|
__rehash_multi(_VSTD::max<size_type>(2 * __bc + !std::__is_hash_power2(__bc),
|
|
size_type(std::ceil(float(size() + 1) / max_load_factor()))));
|
|
__bc = bucket_count();
|
|
}
|
|
size_t __chash = std::__constrain_hash(__cp_hash, __bc);
|
|
__next_pointer __pn = __bucket_list_[__chash];
|
|
if (__pn != nullptr)
|
|
{
|
|
for (bool __found = false; __pn->__next_ != nullptr &&
|
|
std::__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()->__get_value(), __cp_val)))
|
|
{
|
|
if (!__found)
|
|
__found = true;
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return __pn;
|
|
}
|
|
|
|
// Insert the node __cp into the container after __pn (which is the last node in
|
|
// the bucket that compares equal to __cp). Rehashing, and checking for
|
|
// uniqueness has already been performed (in __node_insert_multi_prepare), so
|
|
// all we need to do is update the bucket and size(). Assumes that __cp->__hash
|
|
// is up-to-date.
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
void
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_insert_multi_perform(
|
|
__node_pointer __cp, __next_pointer __pn) _NOEXCEPT
|
|
{
|
|
size_type __bc = bucket_count();
|
|
size_t __chash = std::__constrain_hash(__cp->__hash_, __bc);
|
|
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_[std::__constrain_hash(__cp->__next_->__hash(), __bc)]
|
|
= __cp->__ptr();
|
|
}
|
|
else
|
|
{
|
|
__cp->__next_ = __pn->__next_;
|
|
__pn->__next_ = __cp->__ptr();
|
|
if (__cp->__next_ != nullptr)
|
|
{
|
|
size_t __nhash = std::__constrain_hash(__cp->__next_->__hash(), __bc);
|
|
if (__nhash != __chash)
|
|
__bucket_list_[__nhash] = __cp->__ptr();
|
|
}
|
|
}
|
|
++size();
|
|
}
|
|
|
|
|
|
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->__get_value());
|
|
__next_pointer __pn = __node_insert_multi_prepare(__cp->__hash(), __cp->__get_value());
|
|
__node_insert_multi_perform(__cp, __pn);
|
|
|
|
return iterator(__cp->__ptr());
|
|
}
|
|
|
|
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->__get_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_multi(_VSTD::max<size_type>(2 * __bc + !std::__is_hash_power2(__bc),
|
|
size_type(std::ceil(float(size() + 1) / max_load_factor()))));
|
|
__bc = bucket_count();
|
|
}
|
|
size_t __chash = std::__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();
|
|
return iterator(static_cast<__next_pointer>(__cp));
|
|
}
|
|
return __node_insert_multi(__cp);
|
|
}
|
|
|
|
|
|
|
|
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)
|
|
{
|
|
|
|
size_t __hash = hash_function()(__k);
|
|
size_type __bc = bucket_count();
|
|
bool __inserted = false;
|
|
__next_pointer __nd;
|
|
size_t __chash;
|
|
if (__bc != 0)
|
|
{
|
|
__chash = std::__constrain_hash(__hash, __bc);
|
|
__nd = __bucket_list_[__chash];
|
|
if (__nd != nullptr)
|
|
{
|
|
for (__nd = __nd->__next_; __nd != nullptr &&
|
|
(__nd->__hash() == __hash || std::__constrain_hash(__nd->__hash(), __bc) == __chash);
|
|
__nd = __nd->__next_)
|
|
{
|
|
if ((__nd->__hash() == __hash) &&
|
|
key_eq()(__nd->__upcast()->__get_value(), __k))
|
|
goto __done;
|
|
}
|
|
}
|
|
}
|
|
{
|
|
__node_holder __h = __construct_node_hash(__hash, _VSTD::forward<_Args>(__args)...);
|
|
if (size()+1 > __bc * max_load_factor() || __bc == 0)
|
|
{
|
|
__rehash_unique(_VSTD::max<size_type>(2 * __bc + !std::__is_hash_power2(__bc),
|
|
size_type(std::ceil(float(size() + 1) / max_load_factor()))));
|
|
__bc = bucket_count();
|
|
__chash = std::__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_[std::__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:
|
|
return pair<iterator, bool>(iterator(__nd), __inserted);
|
|
}
|
|
|
|
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)
|
|
{
|
|
__node_holder __h = __construct_node(_VSTD::forward<_Args>(__args)...);
|
|
iterator __r = __node_insert_multi(__p, __h.get());
|
|
__h.release();
|
|
return __r;
|
|
}
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _NodeHandle, class _InsertReturnType>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_InsertReturnType
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_unique(
|
|
_NodeHandle&& __nh)
|
|
{
|
|
if (__nh.empty())
|
|
return _InsertReturnType{end(), false, _NodeHandle()};
|
|
pair<iterator, bool> __result = __node_insert_unique(__nh.__ptr_);
|
|
if (__result.second)
|
|
__nh.__release_ptr();
|
|
return _InsertReturnType{__result.first, __result.second, _VSTD::move(__nh)};
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_unique(
|
|
const_iterator, _NodeHandle&& __nh)
|
|
{
|
|
if (__nh.empty())
|
|
return end();
|
|
pair<iterator, bool> __result = __node_insert_unique(__nh.__ptr_);
|
|
if (__result.second)
|
|
__nh.__release_ptr();
|
|
return __result.first;
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_NodeHandle
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_extract(
|
|
key_type const& __key)
|
|
{
|
|
iterator __i = find(__key);
|
|
if (__i == end())
|
|
return _NodeHandle();
|
|
return __node_handle_extract<_NodeHandle>(__i);
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
_NodeHandle
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_extract(
|
|
const_iterator __p)
|
|
{
|
|
allocator_type __alloc(__node_alloc());
|
|
return _NodeHandle(remove(__p).release(), __alloc);
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _Table>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_merge_unique(
|
|
_Table& __source)
|
|
{
|
|
static_assert(is_same<__node, typename _Table::__node>::value, "");
|
|
|
|
for (typename _Table::iterator __it = __source.begin();
|
|
__it != __source.end();)
|
|
{
|
|
__node_pointer __src_ptr = __it.__node_->__upcast();
|
|
size_t __hash = hash_function()(__src_ptr->__get_value());
|
|
__next_pointer __existing_node =
|
|
__node_insert_unique_prepare(__hash, __src_ptr->__get_value());
|
|
auto __prev_iter = __it++;
|
|
if (__existing_node == nullptr)
|
|
{
|
|
(void)__source.remove(__prev_iter).release();
|
|
__src_ptr->__hash_ = __hash;
|
|
__node_insert_unique_perform(__src_ptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_multi(
|
|
_NodeHandle&& __nh)
|
|
{
|
|
if (__nh.empty())
|
|
return end();
|
|
iterator __result = __node_insert_multi(__nh.__ptr_);
|
|
__nh.__release_ptr();
|
|
return __result;
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _NodeHandle>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
typename __hash_table<_Tp, _Hash, _Equal, _Alloc>::iterator
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_insert_multi(
|
|
const_iterator __hint, _NodeHandle&& __nh)
|
|
{
|
|
if (__nh.empty())
|
|
return end();
|
|
iterator __result = __node_insert_multi(__hint, __nh.__ptr_);
|
|
__nh.__release_ptr();
|
|
return __result;
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <class _Table>
|
|
_LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__node_handle_merge_multi(
|
|
_Table& __source)
|
|
{
|
|
static_assert(is_same<typename _Table::__node, __node>::value, "");
|
|
|
|
for (typename _Table::iterator __it = __source.begin();
|
|
__it != __source.end();)
|
|
{
|
|
__node_pointer __src_ptr = __it.__node_->__upcast();
|
|
size_t __src_hash = hash_function()(__src_ptr->__get_value());
|
|
__next_pointer __pn =
|
|
__node_insert_multi_prepare(__src_hash, __src_ptr->__get_value());
|
|
(void)__source.remove(__it++).release();
|
|
__src_ptr->__hash_ = __src_hash;
|
|
__node_insert_multi_perform(__src_ptr, __pn);
|
|
}
|
|
}
|
|
#endif // _LIBCPP_STD_VER >= 17
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <bool _UniqueKeys>
|
|
void
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__rehash(size_type __n)
|
|
_LIBCPP_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
|
|
{
|
|
if (__n == 1)
|
|
__n = 2;
|
|
else if (__n & (__n - 1))
|
|
__n = std::__next_prime(__n);
|
|
size_type __bc = bucket_count();
|
|
if (__n > __bc)
|
|
__do_rehash<_UniqueKeys>(__n);
|
|
else if (__n < __bc)
|
|
{
|
|
__n = _VSTD::max<size_type>
|
|
(
|
|
__n,
|
|
std::__is_hash_power2(__bc) ? std::__next_hash_pow2(size_t(std::ceil(float(size()) / max_load_factor()))) :
|
|
std::__next_prime(size_t(std::ceil(float(size()) / max_load_factor())))
|
|
);
|
|
if (__n < __bc)
|
|
__do_rehash<_UniqueKeys>(__n);
|
|
}
|
|
}
|
|
|
|
template <class _Tp, class _Hash, class _Equal, class _Alloc>
|
|
template <bool _UniqueKeys>
|
|
void
|
|
__hash_table<_Tp, _Hash, _Equal, _Alloc>::__do_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;
|
|
__next_pointer __pp = __p1_.first().__ptr();
|
|
__next_pointer __cp = __pp->__next_;
|
|
if (__cp != nullptr)
|
|
{
|
|
size_type __chash = std::__constrain_hash(__cp->__hash(), __nbc);
|
|
__bucket_list_[__chash] = __pp;
|
|
size_type __phash = __chash;
|
|
for (__pp = __cp, void(), __cp = __cp->__next_; __cp != nullptr;
|
|
__cp = __pp->__next_)
|
|
{
|
|
__chash = std::__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;
|
|
if _LIBCPP_CONSTEXPR_SINCE_CXX17 (!_UniqueKeys)
|
|
{
|
|
for (; __np->__next_ != nullptr &&
|
|
key_eq()(__cp->__upcast()->__get_value(),
|
|
__np->__next_->__upcast()->__get_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 = std::__constrain_hash(__hash, __bc);
|
|
__next_pointer __nd = __bucket_list_[__chash];
|
|
if (__nd != nullptr)
|
|
{
|
|
for (__nd = __nd->__next_; __nd != nullptr &&
|
|
(__nd->__hash() == __hash
|
|
|| std::__constrain_hash(__nd->__hash(), __bc) == __chash);
|
|
__nd = __nd->__next_)
|
|
{
|
|
if ((__nd->__hash() == __hash)
|
|
&& key_eq()(__nd->__upcast()->__get_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 = std::__constrain_hash(__hash, __bc);
|
|
__next_pointer __nd = __bucket_list_[__chash];
|
|
if (__nd != nullptr)
|
|
{
|
|
for (__nd = __nd->__next_; __nd != nullptr &&
|
|
(__hash == __nd->__hash()
|
|
|| std::__constrain_hash(__nd->__hash(), __bc) == __chash);
|
|
__nd = __nd->__next_)
|
|
{
|
|
if ((__nd->__hash() == __hash)
|
|
&& key_eq()(__nd->__upcast()->__get_value(), __k))
|
|
return const_iterator(__nd);
|
|
}
|
|
}
|
|
|
|
}
|
|
return end();
|
|
}
|
|
|
|
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));
|
|
|
|
// Begin the lifetime of the node itself. Note that this doesn't begin the lifetime of the value
|
|
// held inside the node, since we need to use the allocator's construct() method for that.
|
|
//
|
|
// We don't use the allocator's construct() method to construct the node itself since the
|
|
// Cpp17FooInsertable named requirements don't require the allocator's construct() method
|
|
// to work on anything other than the value_type.
|
|
std::__construct_at(std::addressof(*__h), /* next = */nullptr, /* hash = */0);
|
|
|
|
// Now construct the value_type using the allocator's construct() method.
|
|
__node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__get_value()), _VSTD::forward<_Args>(__args)...);
|
|
__h.get_deleter().__value_constructed = true;
|
|
|
|
__h->__hash_ = hash_function()(__h->__get_value());
|
|
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));
|
|
std::__construct_at(std::addressof(*__h), /* next = */nullptr, /* hash = */__hash);
|
|
__node_traits::construct(__na, _NodeTypes::__get_ptr(__h->__get_value()),
|
|
_VSTD::forward<_First>(__f),
|
|
_VSTD::forward<_Rest>(__rest)...);
|
|
__h.get_deleter().__value_constructed = true;
|
|
return __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)
|
|
{
|
|
__next_pointer __np = __p.__node_;
|
|
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p != end(),
|
|
"unordered container::erase(iterator) called with a non-dereferenceable iterator");
|
|
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);
|
|
}
|
|
__next_pointer __np = __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
|
|
__next_pointer __cn = __p.__node_;
|
|
size_type __bc = bucket_count();
|
|
size_t __chash = std::__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()
|
|
|| std::__constrain_hash(__pn->__hash(), __bc) != __chash)
|
|
{
|
|
if (__cn->__next_ == nullptr
|
|
|| std::__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 = std::__constrain_hash(__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->__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_(
|
|
__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_(__is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value)
|
|
#endif
|
|
{
|
|
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__node_traits::propagate_on_container_swap::value ||
|
|
this->__node_alloc() == __u.__node_alloc(),
|
|
"unordered container::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());
|
|
_VSTD::__swap_allocator(__bucket_list_.get_deleter().__alloc(),
|
|
__u.__bucket_list_.get_deleter().__alloc());
|
|
_VSTD::__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_[std::__constrain_hash(__p1_.first().__next_->__hash(), bucket_count())] =
|
|
__p1_.first().__ptr();
|
|
if (__u.size() > 0)
|
|
__u.__bucket_list_[std::__constrain_hash(__u.__p1_.first().__next_->__hash(), __u.bucket_count())] =
|
|
__u.__p1_.first().__ptr();
|
|
}
|
|
|
|
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_VALID_ELEMENT_ACCESS(__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 &&
|
|
std::__constrain_hash(__np->__hash(), __bc) == __n;
|
|
__np = __np->__next_, (void) ++__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
|
|
|
|
_LIBCPP_POP_MACROS
|
|
|
|
#endif // _LIBCPP___HASH_TABLE
|