602 lines
17 KiB
C++
602 lines
17 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/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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struct IntrusiveRedBlackTreeNode {
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public:
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using EntryType = RBEntry<IntrusiveRedBlackTreeNode>;
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constexpr IntrusiveRedBlackTreeNode() = default;
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void SetEntry(const EntryType& new_entry) {
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entry = new_entry;
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}
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[[nodiscard]] EntryType& GetEntry() {
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return entry;
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}
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[[nodiscard]] const EntryType& GetEntry() const {
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return entry;
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}
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private:
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EntryType entry{};
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friend class impl::IntrusiveRedBlackTreeImpl;
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template <class, class, class>
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friend class IntrusiveRedBlackTree;
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};
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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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private:
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template <class, class, class>
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friend class ::Common::IntrusiveRedBlackTree;
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using RootType = RBHead<IntrusiveRedBlackTreeNode>;
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RootType 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 node;
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public:
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explicit Iterator(pointer n) : node(n) {}
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bool operator==(const Iterator& rhs) const {
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return this->node == rhs.node;
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}
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bool operator!=(const Iterator& rhs) const {
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return !(*this == rhs);
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}
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pointer operator->() const {
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return this->node;
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}
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reference operator*() const {
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return *this->node;
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}
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Iterator& operator++() {
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this->node = GetNext(this->node);
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return *this;
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}
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Iterator& operator--() {
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this->node = GetPrev(this->node);
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return *this;
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}
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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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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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operator Iterator<true>() const {
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return Iterator<true>(this->node);
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}
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};
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private:
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// Define accessors using RB_* functions.
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bool EmptyImpl() const {
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return root.IsEmpty();
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}
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IntrusiveRedBlackTreeNode* GetMinImpl() const {
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return RB_MIN(const_cast<RootType*>(&root));
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}
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IntrusiveRedBlackTreeNode* GetMaxImpl() const {
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return RB_MAX(const_cast<RootType*>(&root));
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}
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IntrusiveRedBlackTreeNode* RemoveImpl(IntrusiveRedBlackTreeNode* node) {
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return RB_REMOVE(&root, node);
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}
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public:
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static IntrusiveRedBlackTreeNode* GetNext(IntrusiveRedBlackTreeNode* node) {
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return RB_NEXT(node);
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}
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static IntrusiveRedBlackTreeNode* GetPrev(IntrusiveRedBlackTreeNode* node) {
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return RB_PREV(node);
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}
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static const IntrusiveRedBlackTreeNode* GetNext(const IntrusiveRedBlackTreeNode* 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 const IntrusiveRedBlackTreeNode* GetPrev(const IntrusiveRedBlackTreeNode* 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() {}
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// Iterator accessors.
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iterator begin() {
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return iterator(this->GetMinImpl());
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}
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const_iterator begin() const {
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return const_iterator(this->GetMinImpl());
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}
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iterator end() {
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return iterator(static_cast<IntrusiveRedBlackTreeNode*>(nullptr));
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}
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const_iterator end() const {
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return const_iterator(static_cast<const IntrusiveRedBlackTreeNode*>(nullptr));
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}
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const_iterator cbegin() const {
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return this->begin();
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}
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const_iterator cend() const {
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return this->end();
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}
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iterator iterator_to(reference ref) {
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return iterator(&ref);
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}
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const_iterator iterator_to(const_reference ref) const {
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return const_iterator(&ref);
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}
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// Content management.
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bool empty() const {
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return this->EmptyImpl();
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}
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reference back() {
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return *this->GetMaxImpl();
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}
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const_reference back() const {
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return *this->GetMaxImpl();
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}
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reference front() {
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return *this->GetMinImpl();
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}
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const_reference front() const {
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return *this->GetMinImpl();
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}
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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 HasLightCompareType = requires {
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{ std::is_same<typename T::LightCompareType, void>::value }
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->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* GetLightCompareType() {
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if constexpr (HasLightCompareType<T>) {
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return static_cast<typename T::LightCompareType*>(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 LightCompareType = std::remove_pointer_t<decltype(impl::GetLightCompareType<T, Default>())>;
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template <class T, class Traits, class Comparator>
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class IntrusiveRedBlackTree {
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public:
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using ImplType = impl::IntrusiveRedBlackTreeImpl;
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private:
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ImplType 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 light_value_type = LightCompareType<Comparator, value_type>;
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using const_light_pointer = const light_value_type*;
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using const_light_reference = const light_value_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 iterator;
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private:
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explicit Iterator(ImplIterator it) : iterator(it) {}
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explicit Iterator(typename std::conditional<Const, ImplType::const_iterator,
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ImplType::iterator>::type::pointer ptr)
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: iterator(ptr) {}
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ImplIterator GetImplIterator() const {
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return this->iterator;
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}
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public:
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bool operator==(const Iterator& rhs) const {
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return this->iterator == rhs.iterator;
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}
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bool operator!=(const Iterator& rhs) const {
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return !(*this == rhs);
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}
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pointer operator->() const {
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return Traits::GetParent(std::addressof(*this->iterator));
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}
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reference operator*() const {
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return *Traits::GetParent(std::addressof(*this->iterator));
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}
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Iterator& operator++() {
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++this->iterator;
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return *this;
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}
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Iterator& operator--() {
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--this->iterator;
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return *this;
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}
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Iterator operator++(int) {
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const Iterator it{*this};
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++this->iterator;
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return it;
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}
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Iterator operator--(int) {
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const Iterator it{*this};
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--this->iterator;
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return it;
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}
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operator Iterator<true>() const {
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return Iterator<true>(this->iterator);
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}
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};
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private:
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static 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 int LightCompareImpl(const void* elm, const IntrusiveRedBlackTreeNode* rhs) {
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return Comparator::Compare(*static_cast<const_light_pointer>(elm), *Traits::GetParent(rhs));
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}
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// Define accessors using RB_* functions.
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IntrusiveRedBlackTreeNode* InsertImpl(IntrusiveRedBlackTreeNode* node) {
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return RB_INSERT(&impl.root, node, CompareImpl);
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}
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IntrusiveRedBlackTreeNode* FindImpl(const IntrusiveRedBlackTreeNode* node) const {
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return RB_FIND(const_cast<ImplType::RootType*>(&impl.root),
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const_cast<IntrusiveRedBlackTreeNode*>(node), CompareImpl);
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}
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IntrusiveRedBlackTreeNode* NFindImpl(const IntrusiveRedBlackTreeNode* node) const {
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return RB_NFIND(const_cast<ImplType::RootType*>(&impl.root),
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const_cast<IntrusiveRedBlackTreeNode*>(node), CompareImpl);
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}
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IntrusiveRedBlackTreeNode* FindLightImpl(const_light_pointer lelm) const {
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return RB_FIND_LIGHT(const_cast<ImplType::RootType*>(&impl.root),
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static_cast<const void*>(lelm), LightCompareImpl);
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}
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IntrusiveRedBlackTreeNode* NFindLightImpl(const_light_pointer lelm) const {
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return RB_NFIND_LIGHT(const_cast<ImplType::RootType*>(&impl.root),
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static_cast<const void*>(lelm), LightCompareImpl);
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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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iterator begin() {
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return iterator(this->impl.begin());
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}
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const_iterator begin() const {
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return const_iterator(this->impl.begin());
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}
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iterator end() {
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return iterator(this->impl.end());
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}
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const_iterator end() const {
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return const_iterator(this->impl.end());
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}
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const_iterator cbegin() const {
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return this->begin();
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}
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const_iterator cend() const {
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return this->end();
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}
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iterator iterator_to(reference ref) {
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return iterator(this->impl.iterator_to(*Traits::GetNode(std::addressof(ref))));
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}
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const_iterator iterator_to(const_reference ref) const {
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return const_iterator(this->impl.iterator_to(*Traits::GetNode(std::addressof(ref))));
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}
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// Content management.
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bool empty() const {
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return this->impl.empty();
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}
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reference back() {
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return *Traits::GetParent(std::addressof(this->impl.back()));
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}
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const_reference back() const {
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return *Traits::GetParent(std::addressof(this->impl.back()));
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}
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reference front() {
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return *Traits::GetParent(std::addressof(this->impl.front()));
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}
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const_reference front() const {
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return *Traits::GetParent(std::addressof(this->impl.front()));
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}
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iterator erase(iterator it) {
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return iterator(this->impl.erase(it.GetImplIterator()));
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}
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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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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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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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iterator find_light(const_light_reference ref) const {
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return iterator(this->FindLightImpl(std::addressof(ref)));
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}
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iterator nfind_light(const_light_reference ref) const {
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return iterator(this->NFindLightImpl(std::addressof(ref)));
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}
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};
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template <auto T, class Derived = 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 constexpr Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
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return GetParentPointer<Member, Derived>(node);
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}
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static constexpr Derived const* GetParent(const IntrusiveRedBlackTreeNode* node) {
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return GetParentPointer<Member, Derived>(node);
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}
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private:
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static constexpr TypedStorage<Derived> DerivedStorage = {};
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};
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template <auto T, class Derived = 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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static constexpr bool IsValid() {
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TypedStorage<Derived> DerivedStorage = {};
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return GetParent(GetNode(GetPointer(DerivedStorage))) == GetPointer(DerivedStorage);
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}
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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 constexpr Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
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return GetParentPointer<Member, Derived>(node);
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}
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static constexpr Derived const* GetParent(const IntrusiveRedBlackTreeNode* node) {
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return GetParentPointer<Member, Derived>(node);
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}
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};
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template <class Derived>
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class IntrusiveRedBlackTreeBaseNode : public IntrusiveRedBlackTreeNode {
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public:
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constexpr Derived* GetPrev() {
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return static_cast<Derived*>(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*>(impl::IntrusiveRedBlackTreeImpl::GetPrev(this));
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}
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constexpr Derived* GetNext() {
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return static_cast<Derived*>(impl::IntrusiveRedBlackTreeImpl::GetNext(this));
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}
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constexpr const Derived* GetNext() const {
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return static_cast<const Derived*>(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>;
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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 static_cast<IntrusiveRedBlackTreeNode*>(parent);
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}
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static constexpr IntrusiveRedBlackTreeNode const* GetNode(Derived const* parent) {
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return static_cast<const IntrusiveRedBlackTreeNode*>(parent);
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}
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static constexpr Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
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return static_cast<Derived*>(node);
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}
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static constexpr Derived const* GetParent(const IntrusiveRedBlackTreeNode* node) {
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return static_cast<const Derived*>(node);
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}
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};
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} // namespace Common
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