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https://github.com/yuzu-emu/yuzu.git
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629 lines
19 KiB
C++
629 lines
19 KiB
C++
// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include "common/common_funcs.h"
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#include "common/parent_of_member.h"
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#include "common/tree.h"
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namespace Common {
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namespace impl {
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class IntrusiveRedBlackTreeImpl;
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}
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#pragma pack(push, 4)
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struct IntrusiveRedBlackTreeNode {
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YUZU_NON_COPYABLE(IntrusiveRedBlackTreeNode);
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public:
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using RBEntry = freebsd::RBEntry<IntrusiveRedBlackTreeNode>;
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private:
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RBEntry m_entry;
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public:
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explicit IntrusiveRedBlackTreeNode() = default;
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[[nodiscard]] constexpr RBEntry& GetRBEntry() {
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return m_entry;
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}
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[[nodiscard]] constexpr const RBEntry& GetRBEntry() const {
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return m_entry;
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}
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constexpr void SetRBEntry(const RBEntry& entry) {
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m_entry = entry;
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}
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};
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static_assert(sizeof(IntrusiveRedBlackTreeNode) ==
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3 * sizeof(void*) + std::max<size_t>(sizeof(freebsd::RBColor), 4));
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#pragma pack(pop)
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template <class T, class Traits, class Comparator>
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class IntrusiveRedBlackTree;
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namespace impl {
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class IntrusiveRedBlackTreeImpl {
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YUZU_NON_COPYABLE(IntrusiveRedBlackTreeImpl);
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private:
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template <class, class, class>
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friend class ::Common::IntrusiveRedBlackTree;
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private:
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using RootType = freebsd::RBHead<IntrusiveRedBlackTreeNode>;
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private:
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RootType m_root;
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public:
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template <bool Const>
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class Iterator;
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using value_type = IntrusiveRedBlackTreeNode;
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using size_type = size_t;
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using difference_type = ptrdiff_t;
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using pointer = value_type*;
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using const_pointer = const value_type*;
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using reference = value_type&;
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using const_reference = const value_type&;
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using iterator = Iterator<false>;
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using const_iterator = Iterator<true>;
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template <bool Const>
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class Iterator {
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public:
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using iterator_category = std::bidirectional_iterator_tag;
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using value_type = typename IntrusiveRedBlackTreeImpl::value_type;
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using difference_type = typename IntrusiveRedBlackTreeImpl::difference_type;
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using pointer = std::conditional_t<Const, IntrusiveRedBlackTreeImpl::const_pointer,
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IntrusiveRedBlackTreeImpl::pointer>;
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using reference = std::conditional_t<Const, IntrusiveRedBlackTreeImpl::const_reference,
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IntrusiveRedBlackTreeImpl::reference>;
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private:
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pointer m_node;
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public:
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constexpr explicit Iterator(pointer n) : m_node(n) {}
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constexpr bool operator==(const Iterator& rhs) const {
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return m_node == rhs.m_node;
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}
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constexpr bool operator!=(const Iterator& rhs) const {
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return !(*this == rhs);
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}
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constexpr pointer operator->() const {
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return m_node;
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}
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constexpr reference operator*() const {
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return *m_node;
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}
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constexpr Iterator& operator++() {
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m_node = GetNext(m_node);
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return *this;
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}
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constexpr Iterator& operator--() {
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m_node = GetPrev(m_node);
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return *this;
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}
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constexpr Iterator operator++(int) {
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const Iterator it{*this};
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++(*this);
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return it;
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}
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constexpr Iterator operator--(int) {
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const Iterator it{*this};
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--(*this);
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return it;
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}
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constexpr operator Iterator<true>() const {
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return Iterator<true>(m_node);
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}
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};
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private:
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constexpr bool EmptyImpl() const {
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return m_root.IsEmpty();
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}
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constexpr IntrusiveRedBlackTreeNode* GetMinImpl() const {
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return freebsd::RB_MIN(const_cast<RootType&>(m_root));
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}
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constexpr IntrusiveRedBlackTreeNode* GetMaxImpl() const {
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return freebsd::RB_MAX(const_cast<RootType&>(m_root));
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}
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constexpr IntrusiveRedBlackTreeNode* RemoveImpl(IntrusiveRedBlackTreeNode* node) {
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return freebsd::RB_REMOVE(m_root, node);
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}
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public:
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static constexpr IntrusiveRedBlackTreeNode* GetNext(IntrusiveRedBlackTreeNode* node) {
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return freebsd::RB_NEXT(node);
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}
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static constexpr IntrusiveRedBlackTreeNode* GetPrev(IntrusiveRedBlackTreeNode* node) {
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return freebsd::RB_PREV(node);
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}
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static constexpr IntrusiveRedBlackTreeNode const* GetNext(
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IntrusiveRedBlackTreeNode const* node) {
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return static_cast<const IntrusiveRedBlackTreeNode*>(
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GetNext(const_cast<IntrusiveRedBlackTreeNode*>(node)));
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}
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static constexpr IntrusiveRedBlackTreeNode const* GetPrev(
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IntrusiveRedBlackTreeNode const* node) {
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return static_cast<const IntrusiveRedBlackTreeNode*>(
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GetPrev(const_cast<IntrusiveRedBlackTreeNode*>(node)));
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}
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public:
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constexpr IntrusiveRedBlackTreeImpl() = default;
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// Iterator accessors.
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constexpr iterator begin() {
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return iterator(this->GetMinImpl());
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}
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constexpr const_iterator begin() const {
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return const_iterator(this->GetMinImpl());
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}
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constexpr iterator end() {
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return iterator(static_cast<IntrusiveRedBlackTreeNode*>(nullptr));
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}
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constexpr const_iterator end() const {
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return const_iterator(static_cast<const IntrusiveRedBlackTreeNode*>(nullptr));
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}
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constexpr const_iterator cbegin() const {
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return this->begin();
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}
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constexpr const_iterator cend() const {
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return this->end();
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}
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constexpr iterator iterator_to(reference ref) {
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return iterator(std::addressof(ref));
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}
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constexpr const_iterator iterator_to(const_reference ref) const {
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return const_iterator(std::addressof(ref));
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}
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// Content management.
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constexpr bool empty() const {
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return this->EmptyImpl();
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}
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constexpr reference back() {
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return *this->GetMaxImpl();
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}
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constexpr const_reference back() const {
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return *this->GetMaxImpl();
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}
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constexpr reference front() {
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return *this->GetMinImpl();
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}
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constexpr const_reference front() const {
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return *this->GetMinImpl();
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}
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constexpr iterator erase(iterator it) {
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auto cur = std::addressof(*it);
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auto next = GetNext(cur);
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this->RemoveImpl(cur);
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return iterator(next);
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}
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};
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} // namespace impl
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template <typename T>
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concept HasRedBlackKeyType = requires {
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{ std::is_same<typename T::RedBlackKeyType, void>::value } -> std::convertible_to<bool>;
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};
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namespace impl {
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template <typename T, typename Default>
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consteval auto* GetRedBlackKeyType() {
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if constexpr (HasRedBlackKeyType<T>) {
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return static_cast<typename T::RedBlackKeyType*>(nullptr);
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} else {
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return static_cast<Default*>(nullptr);
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}
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}
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} // namespace impl
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template <typename T, typename Default>
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using RedBlackKeyType = std::remove_pointer_t<decltype(impl::GetRedBlackKeyType<T, Default>())>;
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template <class T, class Traits, class Comparator>
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class IntrusiveRedBlackTree {
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YUZU_NON_COPYABLE(IntrusiveRedBlackTree);
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public:
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using ImplType = impl::IntrusiveRedBlackTreeImpl;
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private:
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ImplType m_impl;
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public:
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template <bool Const>
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class Iterator;
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using value_type = T;
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using size_type = size_t;
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using difference_type = ptrdiff_t;
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using pointer = T*;
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using const_pointer = const T*;
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using reference = T&;
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using const_reference = const T&;
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using iterator = Iterator<false>;
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using const_iterator = Iterator<true>;
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using key_type = RedBlackKeyType<Comparator, value_type>;
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using const_key_pointer = const key_type*;
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using const_key_reference = const key_type&;
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template <bool Const>
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class Iterator {
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public:
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friend class IntrusiveRedBlackTree<T, Traits, Comparator>;
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using ImplIterator =
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std::conditional_t<Const, ImplType::const_iterator, ImplType::iterator>;
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using iterator_category = std::bidirectional_iterator_tag;
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using value_type = typename IntrusiveRedBlackTree::value_type;
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using difference_type = typename IntrusiveRedBlackTree::difference_type;
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using pointer = std::conditional_t<Const, IntrusiveRedBlackTree::const_pointer,
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IntrusiveRedBlackTree::pointer>;
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using reference = std::conditional_t<Const, IntrusiveRedBlackTree::const_reference,
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IntrusiveRedBlackTree::reference>;
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private:
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ImplIterator m_impl;
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private:
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constexpr explicit Iterator(ImplIterator it) : m_impl(it) {}
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constexpr explicit Iterator(typename ImplIterator::pointer p) : m_impl(p) {}
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constexpr ImplIterator GetImplIterator() const {
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return m_impl;
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}
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public:
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constexpr bool operator==(const Iterator& rhs) const {
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return m_impl == rhs.m_impl;
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}
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constexpr bool operator!=(const Iterator& rhs) const {
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return !(*this == rhs);
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}
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constexpr pointer operator->() const {
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return Traits::GetParent(std::addressof(*m_impl));
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}
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constexpr reference operator*() const {
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return *Traits::GetParent(std::addressof(*m_impl));
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}
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constexpr Iterator& operator++() {
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++m_impl;
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return *this;
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}
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constexpr Iterator& operator--() {
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--m_impl;
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return *this;
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}
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constexpr Iterator operator++(int) {
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const Iterator it{*this};
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++m_impl;
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return it;
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}
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constexpr Iterator operator--(int) {
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const Iterator it{*this};
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--m_impl;
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return it;
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}
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constexpr operator Iterator<true>() const {
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return Iterator<true>(m_impl);
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}
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};
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private:
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static constexpr int CompareImpl(const IntrusiveRedBlackTreeNode* lhs,
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const IntrusiveRedBlackTreeNode* rhs) {
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return Comparator::Compare(*Traits::GetParent(lhs), *Traits::GetParent(rhs));
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}
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static constexpr int CompareKeyImpl(const_key_reference key,
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const IntrusiveRedBlackTreeNode* rhs) {
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return Comparator::Compare(key, *Traits::GetParent(rhs));
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}
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// Define accessors using RB_* functions.
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constexpr IntrusiveRedBlackTreeNode* InsertImpl(IntrusiveRedBlackTreeNode* node) {
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return freebsd::RB_INSERT(m_impl.m_root, node, CompareImpl);
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}
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constexpr IntrusiveRedBlackTreeNode* FindImpl(IntrusiveRedBlackTreeNode const* node) const {
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return freebsd::RB_FIND(const_cast<ImplType::RootType&>(m_impl.m_root),
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const_cast<IntrusiveRedBlackTreeNode*>(node), CompareImpl);
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}
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constexpr IntrusiveRedBlackTreeNode* NFindImpl(IntrusiveRedBlackTreeNode const* node) const {
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return freebsd::RB_NFIND(const_cast<ImplType::RootType&>(m_impl.m_root),
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const_cast<IntrusiveRedBlackTreeNode*>(node), CompareImpl);
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}
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constexpr IntrusiveRedBlackTreeNode* FindKeyImpl(const_key_reference key) const {
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return freebsd::RB_FIND_KEY(const_cast<ImplType::RootType&>(m_impl.m_root), key,
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CompareKeyImpl);
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}
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constexpr IntrusiveRedBlackTreeNode* NFindKeyImpl(const_key_reference key) const {
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return freebsd::RB_NFIND_KEY(const_cast<ImplType::RootType&>(m_impl.m_root), key,
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CompareKeyImpl);
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}
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constexpr IntrusiveRedBlackTreeNode* FindExistingImpl(
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IntrusiveRedBlackTreeNode const* node) const {
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return freebsd::RB_FIND_EXISTING(const_cast<ImplType::RootType&>(m_impl.m_root),
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const_cast<IntrusiveRedBlackTreeNode*>(node), CompareImpl);
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}
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constexpr IntrusiveRedBlackTreeNode* FindExistingKeyImpl(const_key_reference key) const {
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return freebsd::RB_FIND_EXISTING_KEY(const_cast<ImplType::RootType&>(m_impl.m_root), key,
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CompareKeyImpl);
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}
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public:
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constexpr IntrusiveRedBlackTree() = default;
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// Iterator accessors.
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constexpr iterator begin() {
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return iterator(m_impl.begin());
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}
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constexpr const_iterator begin() const {
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return const_iterator(m_impl.begin());
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}
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constexpr iterator end() {
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return iterator(m_impl.end());
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}
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constexpr const_iterator end() const {
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return const_iterator(m_impl.end());
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}
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constexpr const_iterator cbegin() const {
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return this->begin();
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}
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constexpr const_iterator cend() const {
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return this->end();
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}
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constexpr iterator iterator_to(reference ref) {
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return iterator(m_impl.iterator_to(*Traits::GetNode(std::addressof(ref))));
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}
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constexpr const_iterator iterator_to(const_reference ref) const {
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return const_iterator(m_impl.iterator_to(*Traits::GetNode(std::addressof(ref))));
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}
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// Content management.
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constexpr bool empty() const {
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return m_impl.empty();
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}
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constexpr reference back() {
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return *Traits::GetParent(std::addressof(m_impl.back()));
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}
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constexpr const_reference back() const {
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return *Traits::GetParent(std::addressof(m_impl.back()));
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}
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constexpr reference front() {
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return *Traits::GetParent(std::addressof(m_impl.front()));
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}
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constexpr const_reference front() const {
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return *Traits::GetParent(std::addressof(m_impl.front()));
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}
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constexpr iterator erase(iterator it) {
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return iterator(m_impl.erase(it.GetImplIterator()));
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}
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constexpr iterator insert(reference ref) {
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ImplType::pointer node = Traits::GetNode(std::addressof(ref));
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this->InsertImpl(node);
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return iterator(node);
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}
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constexpr iterator find(const_reference ref) const {
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return iterator(this->FindImpl(Traits::GetNode(std::addressof(ref))));
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}
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constexpr iterator nfind(const_reference ref) const {
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return iterator(this->NFindImpl(Traits::GetNode(std::addressof(ref))));
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}
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constexpr iterator find_key(const_key_reference ref) const {
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return iterator(this->FindKeyImpl(ref));
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}
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constexpr iterator nfind_key(const_key_reference ref) const {
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return iterator(this->NFindKeyImpl(ref));
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}
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constexpr iterator find_existing(const_reference ref) const {
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return iterator(this->FindExistingImpl(Traits::GetNode(std::addressof(ref))));
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}
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constexpr iterator find_existing_key(const_key_reference ref) const {
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return iterator(this->FindExistingKeyImpl(ref));
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}
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};
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template <auto T, class Derived = Common::impl::GetParentType<T>>
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class IntrusiveRedBlackTreeMemberTraits;
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template <class Parent, IntrusiveRedBlackTreeNode Parent::*Member, class Derived>
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class IntrusiveRedBlackTreeMemberTraits<Member, Derived> {
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public:
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template <class Comparator>
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using TreeType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeMemberTraits, Comparator>;
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using TreeTypeImpl = impl::IntrusiveRedBlackTreeImpl;
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private:
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template <class, class, class>
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friend class IntrusiveRedBlackTree;
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friend class impl::IntrusiveRedBlackTreeImpl;
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static constexpr IntrusiveRedBlackTreeNode* GetNode(Derived* parent) {
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return std::addressof(parent->*Member);
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}
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static constexpr IntrusiveRedBlackTreeNode const* GetNode(Derived const* parent) {
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return std::addressof(parent->*Member);
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}
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static Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
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return Common::GetParentPointer<Member, Derived>(node);
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}
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static Derived const* GetParent(IntrusiveRedBlackTreeNode const* node) {
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return Common::GetParentPointer<Member, Derived>(node);
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}
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};
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template <auto T, class Derived = Common::impl::GetParentType<T>>
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class IntrusiveRedBlackTreeMemberTraitsDeferredAssert;
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template <class Parent, IntrusiveRedBlackTreeNode Parent::*Member, class Derived>
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class IntrusiveRedBlackTreeMemberTraitsDeferredAssert<Member, Derived> {
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public:
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template <class Comparator>
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using TreeType =
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IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeMemberTraitsDeferredAssert, Comparator>;
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using TreeTypeImpl = impl::IntrusiveRedBlackTreeImpl;
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private:
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template <class, class, class>
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friend class IntrusiveRedBlackTree;
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friend class impl::IntrusiveRedBlackTreeImpl;
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static constexpr IntrusiveRedBlackTreeNode* GetNode(Derived* parent) {
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return std::addressof(parent->*Member);
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}
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static constexpr IntrusiveRedBlackTreeNode const* GetNode(Derived const* parent) {
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return std::addressof(parent->*Member);
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}
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static Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
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return Common::GetParentPointer<Member, Derived>(node);
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}
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static Derived const* GetParent(IntrusiveRedBlackTreeNode const* node) {
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return Common::GetParentPointer<Member, Derived>(node);
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}
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};
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template <class Derived>
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class alignas(void*) IntrusiveRedBlackTreeBaseNode : public IntrusiveRedBlackTreeNode {
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public:
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using IntrusiveRedBlackTreeNode::IntrusiveRedBlackTreeNode;
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|
|
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constexpr Derived* GetPrev() {
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|
return static_cast<Derived*>(static_cast<IntrusiveRedBlackTreeBaseNode*>(
|
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impl::IntrusiveRedBlackTreeImpl::GetPrev(this)));
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|
}
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constexpr const Derived* GetPrev() const {
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return static_cast<const Derived*>(static_cast<const IntrusiveRedBlackTreeBaseNode*>(
|
|
impl::IntrusiveRedBlackTreeImpl::GetPrev(this)));
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|
}
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|
|
|
constexpr Derived* GetNext() {
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|
return static_cast<Derived*>(static_cast<IntrusiveRedBlackTreeBaseNode*>(
|
|
impl::IntrusiveRedBlackTreeImpl::GetNext(this)));
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|
}
|
|
constexpr const Derived* GetNext() const {
|
|
return static_cast<const Derived*>(static_cast<const IntrusiveRedBlackTreeBaseNode*>(
|
|
impl::IntrusiveRedBlackTreeImpl::GetNext(this)));
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|
}
|
|
};
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|
|
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template <class Derived>
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|
class IntrusiveRedBlackTreeBaseTraits {
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|
public:
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|
template <class Comparator>
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|
using TreeType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeBaseTraits, Comparator>;
|
|
using TreeTypeImpl = impl::IntrusiveRedBlackTreeImpl;
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|
|
|
private:
|
|
template <class, class, class>
|
|
friend class IntrusiveRedBlackTree;
|
|
|
|
friend class impl::IntrusiveRedBlackTreeImpl;
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|
|
|
static constexpr IntrusiveRedBlackTreeNode* GetNode(Derived* parent) {
|
|
return static_cast<IntrusiveRedBlackTreeNode*>(
|
|
static_cast<IntrusiveRedBlackTreeBaseNode<Derived>*>(parent));
|
|
}
|
|
|
|
static constexpr IntrusiveRedBlackTreeNode const* GetNode(Derived const* parent) {
|
|
return static_cast<const IntrusiveRedBlackTreeNode*>(
|
|
static_cast<const IntrusiveRedBlackTreeBaseNode<Derived>*>(parent));
|
|
}
|
|
|
|
static constexpr Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
|
|
return static_cast<Derived*>(static_cast<IntrusiveRedBlackTreeBaseNode<Derived>*>(node));
|
|
}
|
|
|
|
static constexpr Derived const* GetParent(IntrusiveRedBlackTreeNode const* node) {
|
|
return static_cast<const Derived*>(
|
|
static_cast<const IntrusiveRedBlackTreeBaseNode<Derived>*>(node));
|
|
}
|
|
};
|
|
|
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} // namespace Common
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