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+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
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+// SPDX-License-Identifier: GPL-2.0-or-later
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+
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+#pragma once
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+
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+#include "common/common_funcs.h"
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+#include "common/parent_of_member.h"
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+
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+namespace Common {
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+
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+// Forward declare implementation class for Node.
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+namespace impl {
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+
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+class IntrusiveListImpl;
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+
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+}
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+
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+class IntrusiveListNode {
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+ YUZU_NON_COPYABLE(IntrusiveListNode);
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+
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+private:
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+ friend class impl::IntrusiveListImpl;
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+
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+ IntrusiveListNode* m_prev;
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+ IntrusiveListNode* m_next;
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+
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+public:
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+ constexpr IntrusiveListNode() : m_prev(this), m_next(this) {}
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+
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+ constexpr bool IsLinked() const {
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+ return m_next != this;
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+ }
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+
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+private:
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+ constexpr void LinkPrev(IntrusiveListNode* node) {
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+ // We can't link an already linked node.
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+ ASSERT(!node->IsLinked());
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+ this->SplicePrev(node, node);
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+ }
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+
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+ constexpr void SplicePrev(IntrusiveListNode* first, IntrusiveListNode* last) {
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+ // Splice a range into the list.
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+ auto last_prev = last->m_prev;
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+ first->m_prev = m_prev;
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+ last_prev->m_next = this;
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+ m_prev->m_next = first;
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+ m_prev = last_prev;
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+ }
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+
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+ constexpr void LinkNext(IntrusiveListNode* node) {
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+ // We can't link an already linked node.
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+ ASSERT(!node->IsLinked());
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+ return this->SpliceNext(node, node);
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+ }
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+
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+ constexpr void SpliceNext(IntrusiveListNode* first, IntrusiveListNode* last) {
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+ // Splice a range into the list.
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+ auto last_prev = last->m_prev;
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+ first->m_prev = this;
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+ last_prev->m_next = m_next;
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+ m_next->m_prev = last_prev;
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+ m_next = first;
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+ }
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+
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+ constexpr void Unlink() {
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+ this->Unlink(m_next);
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+ }
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+
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+ constexpr void Unlink(IntrusiveListNode* last) {
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+ // Unlink a node from a next node.
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+ auto last_prev = last->m_prev;
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+ m_prev->m_next = last;
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+ last->m_prev = m_prev;
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+ last_prev->m_next = this;
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+ m_prev = last_prev;
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+ }
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+
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+ constexpr IntrusiveListNode* GetPrev() {
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+ return m_prev;
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+ }
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+
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+ constexpr const IntrusiveListNode* GetPrev() const {
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+ return m_prev;
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+ }
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+
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+ constexpr IntrusiveListNode* GetNext() {
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+ return m_next;
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+ }
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+
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+ constexpr const IntrusiveListNode* GetNext() const {
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+ return m_next;
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+ }
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+};
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+// DEPRECATED: static_assert(std::is_literal_type<IntrusiveListNode>::value);
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+
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+namespace impl {
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+
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+class IntrusiveListImpl {
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+ YUZU_NON_COPYABLE(IntrusiveListImpl);
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+
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+private:
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+ IntrusiveListNode m_root_node;
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+
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+public:
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+ template <bool Const>
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+ class Iterator;
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+
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+ using value_type = IntrusiveListNode;
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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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+ using reverse_iterator = std::reverse_iterator<iterator>;
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+ using const_reverse_iterator = std::reverse_iterator<const_iterator>;
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+
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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 IntrusiveListImpl::value_type;
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+ using difference_type = typename IntrusiveListImpl::difference_type;
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+ using pointer =
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+ std::conditional_t<Const, IntrusiveListImpl::const_pointer, IntrusiveListImpl::pointer>;
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+ using reference = std::conditional_t<Const, IntrusiveListImpl::const_reference,
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+ IntrusiveListImpl::reference>;
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+
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+ private:
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+ pointer m_node;
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+
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+ public:
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+ constexpr explicit Iterator(pointer n) : m_node(n) {}
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+
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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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+
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+ constexpr pointer operator->() const {
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+ return m_node;
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+ }
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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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+
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+ constexpr Iterator& operator++() {
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+ m_node = m_node->m_next;
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+ return *this;
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+ }
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+
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+ constexpr Iterator& operator--() {
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+ m_node = m_node->m_prev;
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+ return *this;
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+ }
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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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+
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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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+
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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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+ constexpr Iterator<false> GetNonConstIterator() const {
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+ return Iterator<false>(const_cast<IntrusiveListImpl::pointer>(m_node));
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+ }
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+ };
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+
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+public:
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+ constexpr IntrusiveListImpl() : m_root_node() {}
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+
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+ // Iterator accessors.
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+ constexpr iterator begin() {
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+ return iterator(m_root_node.GetNext());
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+ }
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+
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+ constexpr const_iterator begin() const {
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+ return const_iterator(m_root_node.GetNext());
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+ }
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+
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+ constexpr iterator end() {
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+ return iterator(std::addressof(m_root_node));
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+ }
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+
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+ constexpr const_iterator end() const {
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+ return const_iterator(std::addressof(m_root_node));
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+ }
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+
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+ constexpr iterator iterator_to(reference v) {
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+ // Only allow iterator_to for values in lists.
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+ ASSERT(v.IsLinked());
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+ return iterator(std::addressof(v));
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+ }
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+
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+ constexpr const_iterator iterator_to(const_reference v) const {
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+ // Only allow iterator_to for values in lists.
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+ ASSERT(v.IsLinked());
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+ return const_iterator(std::addressof(v));
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+ }
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+
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+ // Content management.
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+ constexpr bool empty() const {
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+ return !m_root_node.IsLinked();
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+ }
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+
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+ constexpr size_type size() const {
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+ return static_cast<size_type>(std::distance(this->begin(), this->end()));
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+ }
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+
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+ constexpr reference back() {
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+ return *m_root_node.GetPrev();
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+ }
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+
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+ constexpr const_reference back() const {
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+ return *m_root_node.GetPrev();
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+ }
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+
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+ constexpr reference front() {
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+ return *m_root_node.GetNext();
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+ }
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+
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+ constexpr const_reference front() const {
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+ return *m_root_node.GetNext();
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+ }
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+
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+ constexpr void push_back(reference node) {
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+ m_root_node.LinkPrev(std::addressof(node));
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+ }
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+
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+ constexpr void push_front(reference node) {
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+ m_root_node.LinkNext(std::addressof(node));
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+ }
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+
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+ constexpr void pop_back() {
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+ m_root_node.GetPrev()->Unlink();
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+ }
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+
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+ constexpr void pop_front() {
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+ m_root_node.GetNext()->Unlink();
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+ }
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+
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+ constexpr iterator insert(const_iterator pos, reference node) {
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+ pos.GetNonConstIterator()->LinkPrev(std::addressof(node));
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+ return iterator(std::addressof(node));
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+ }
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+
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+ constexpr void splice(const_iterator pos, IntrusiveListImpl& o) {
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+ splice_impl(pos, o.begin(), o.end());
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+ }
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+
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+ constexpr void splice(const_iterator pos, IntrusiveListImpl& o, const_iterator first) {
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+ const_iterator last(first);
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+ std::advance(last, 1);
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+ splice_impl(pos, first, last);
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+ }
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+
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+ constexpr void splice(const_iterator pos, IntrusiveListImpl& o, const_iterator first,
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+ const_iterator last) {
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+ splice_impl(pos, first, last);
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+ }
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+
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+ constexpr iterator erase(const_iterator pos) {
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+ if (pos == this->end()) {
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+ return this->end();
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+ }
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+ iterator it(pos.GetNonConstIterator());
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+ (it++)->Unlink();
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+ return it;
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+ }
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+
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+ constexpr void clear() {
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+ while (!this->empty()) {
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+ this->pop_front();
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+ }
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+ }
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+
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+private:
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+ constexpr void splice_impl(const_iterator _pos, const_iterator _first, const_iterator _last) {
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+ if (_first == _last) {
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+ return;
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+ }
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+ iterator pos(_pos.GetNonConstIterator());
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+ iterator first(_first.GetNonConstIterator());
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+ iterator last(_last.GetNonConstIterator());
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+ first->Unlink(std::addressof(*last));
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+ pos->SplicePrev(std::addressof(*first), std::addressof(*first));
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+ }
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+};
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+
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+} // namespace impl
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+
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+template <class T, class Traits>
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+class IntrusiveList {
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+ YUZU_NON_COPYABLE(IntrusiveList);
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+
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+private:
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+ impl::IntrusiveListImpl m_impl;
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+
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+public:
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+ template <bool Const>
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+ class Iterator;
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+
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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 = 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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+ using reverse_iterator = std::reverse_iterator<iterator>;
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+ using const_reverse_iterator = std::reverse_iterator<const_iterator>;
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+
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+ template <bool Const>
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+ class Iterator {
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+ public:
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+ friend class Common::IntrusiveList<T, Traits>;
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+
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+ using ImplIterator =
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+ std::conditional_t<Const, Common::impl::IntrusiveListImpl::const_iterator,
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+ Common::impl::IntrusiveListImpl::iterator>;
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+
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+ using iterator_category = std::bidirectional_iterator_tag;
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+ using value_type = typename IntrusiveList::value_type;
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+ using difference_type = typename IntrusiveList::difference_type;
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+ using pointer =
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+ std::conditional_t<Const, IntrusiveList::const_pointer, IntrusiveList::pointer>;
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+ using reference =
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+ std::conditional_t<Const, IntrusiveList::const_reference, IntrusiveList::reference>;
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+
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+ private:
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+ ImplIterator m_iterator;
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+
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+ private:
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+ constexpr explicit Iterator(ImplIterator it) : m_iterator(it) {}
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+
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+ constexpr ImplIterator GetImplIterator() const {
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+ return m_iterator;
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+ }
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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_iterator == rhs.m_iterator;
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+ }
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+
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+ constexpr pointer operator->() const {
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+ return std::addressof(Traits::GetParent(*m_iterator));
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+ }
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+
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+ constexpr reference operator*() const {
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+ return Traits::GetParent(*m_iterator);
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+ }
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+
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+ constexpr Iterator& operator++() {
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+ ++m_iterator;
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+ return *this;
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+ }
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+
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+ constexpr Iterator& operator--() {
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+ --m_iterator;
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+ return *this;
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+ }
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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_iterator;
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+ return it;
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+ }
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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_iterator;
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+ return it;
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+ }
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+
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+ constexpr operator Iterator<true>() const {
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+ return Iterator<true>(m_iterator);
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+ }
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+ };
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+
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+private:
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+ static constexpr IntrusiveListNode& GetNode(reference ref) {
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+ return Traits::GetNode(ref);
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+ }
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+
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+ static constexpr IntrusiveListNode const& GetNode(const_reference ref) {
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+ return Traits::GetNode(ref);
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+ }
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+
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+ static constexpr reference GetParent(IntrusiveListNode& node) {
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+ return Traits::GetParent(node);
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+ }
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+
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+ static constexpr const_reference GetParent(IntrusiveListNode const& node) {
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+ return Traits::GetParent(node);
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+ }
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+
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+public:
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+ constexpr IntrusiveList() : m_impl() {}
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+
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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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+
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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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+
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+ constexpr iterator end() {
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+ return iterator(m_impl.end());
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+ }
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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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+
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+ constexpr const_iterator cbegin() const {
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+ return this->begin();
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+ }
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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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+
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+ constexpr reverse_iterator rbegin() {
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|
+ return reverse_iterator(this->end());
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|
+ }
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+
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+ constexpr const_reverse_iterator rbegin() const {
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|
|
+ return const_reverse_iterator(this->end());
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|
|
+ }
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+
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|
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+ constexpr reverse_iterator rend() {
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|
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+ return reverse_iterator(this->begin());
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|
|
+ }
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+
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|
|
+ constexpr const_reverse_iterator rend() const {
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|
|
+ return const_reverse_iterator(this->begin());
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|
|
|
|
+ }
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+
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|
|
+ constexpr const_reverse_iterator crbegin() const {
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|
|
|
+ return this->rbegin();
|
|
|
|
|
+ }
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+
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|
+ constexpr const_reverse_iterator crend() const {
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|
|
+ return this->rend();
|
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|
|
|
+ }
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+
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|
|
+ constexpr iterator iterator_to(reference v) {
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|
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+ return iterator(m_impl.iterator_to(GetNode(v)));
|
|
|
|
|
+ }
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|
+
|
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|
|
+ constexpr const_iterator iterator_to(const_reference v) const {
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|
|
+ return const_iterator(m_impl.iterator_to(GetNode(v)));
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|
|
|
|
+ }
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+
|
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|
|
|
+ // Content management.
|
|
|
|
|
+ constexpr bool empty() const {
|
|
|
|
|
+ return m_impl.empty();
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr size_type size() const {
|
|
|
|
|
+ return m_impl.size();
|
|
|
|
|
+ }
|
|
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|
|
+
|
|
|
|
|
+ constexpr reference back() {
|
|
|
|
|
+ return GetParent(m_impl.back());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr const_reference back() const {
|
|
|
|
|
+ return GetParent(m_impl.back());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr reference front() {
|
|
|
|
|
+ return GetParent(m_impl.front());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr const_reference front() const {
|
|
|
|
|
+ return GetParent(m_impl.front());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void push_back(reference ref) {
|
|
|
|
|
+ m_impl.push_back(GetNode(ref));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void push_front(reference ref) {
|
|
|
|
|
+ m_impl.push_front(GetNode(ref));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void pop_back() {
|
|
|
|
|
+ m_impl.pop_back();
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void pop_front() {
|
|
|
|
|
+ m_impl.pop_front();
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr iterator insert(const_iterator pos, reference ref) {
|
|
|
|
|
+ return iterator(m_impl.insert(pos.GetImplIterator(), GetNode(ref)));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void splice(const_iterator pos, IntrusiveList& o) {
|
|
|
|
|
+ m_impl.splice(pos.GetImplIterator(), o.m_impl);
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void splice(const_iterator pos, IntrusiveList& o, const_iterator first) {
|
|
|
|
|
+ m_impl.splice(pos.GetImplIterator(), o.m_impl, first.GetImplIterator());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void splice(const_iterator pos, IntrusiveList& o, const_iterator first,
|
|
|
|
|
+ const_iterator last) {
|
|
|
|
|
+ m_impl.splice(pos.GetImplIterator(), o.m_impl, first.GetImplIterator(),
|
|
|
|
|
+ last.GetImplIterator());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr iterator erase(const_iterator pos) {
|
|
|
|
|
+ return iterator(m_impl.erase(pos.GetImplIterator()));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ constexpr void clear() {
|
|
|
|
|
+ m_impl.clear();
|
|
|
|
|
+ }
|
|
|
|
|
+};
|
|
|
|
|
+
|
|
|
|
|
+template <auto T, class Derived = Common::impl::GetParentType<T>>
|
|
|
|
|
+class IntrusiveListMemberTraits;
|
|
|
|
|
+
|
|
|
|
|
+template <class Parent, IntrusiveListNode Parent::*Member, class Derived>
|
|
|
|
|
+class IntrusiveListMemberTraits<Member, Derived> {
|
|
|
|
|
+public:
|
|
|
|
|
+ using ListType = IntrusiveList<Derived, IntrusiveListMemberTraits>;
|
|
|
|
|
+
|
|
|
|
|
+private:
|
|
|
|
|
+ friend class IntrusiveList<Derived, IntrusiveListMemberTraits>;
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr IntrusiveListNode& GetNode(Derived& parent) {
|
|
|
|
|
+ return parent.*Member;
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr IntrusiveListNode const& GetNode(Derived const& parent) {
|
|
|
|
|
+ return parent.*Member;
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static Derived& GetParent(IntrusiveListNode& node) {
|
|
|
|
|
+ return Common::GetParentReference<Member, Derived>(std::addressof(node));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static Derived const& GetParent(IntrusiveListNode const& node) {
|
|
|
|
|
+ return Common::GetParentReference<Member, Derived>(std::addressof(node));
|
|
|
|
|
+ }
|
|
|
|
|
+};
|
|
|
|
|
+
|
|
|
|
|
+template <auto T, class Derived = Common::impl::GetParentType<T>>
|
|
|
|
|
+class IntrusiveListMemberTraitsByNonConstexprOffsetOf;
|
|
|
|
|
+
|
|
|
|
|
+template <class Parent, IntrusiveListNode Parent::*Member, class Derived>
|
|
|
|
|
+class IntrusiveListMemberTraitsByNonConstexprOffsetOf<Member, Derived> {
|
|
|
|
|
+public:
|
|
|
|
|
+ using ListType = IntrusiveList<Derived, IntrusiveListMemberTraitsByNonConstexprOffsetOf>;
|
|
|
|
|
+
|
|
|
|
|
+private:
|
|
|
|
|
+ friend class IntrusiveList<Derived, IntrusiveListMemberTraitsByNonConstexprOffsetOf>;
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr IntrusiveListNode& GetNode(Derived& parent) {
|
|
|
|
|
+ return parent.*Member;
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr IntrusiveListNode const& GetNode(Derived const& parent) {
|
|
|
|
|
+ return parent.*Member;
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static Derived& GetParent(IntrusiveListNode& node) {
|
|
|
|
|
+ return *reinterpret_cast<Derived*>(reinterpret_cast<char*>(std::addressof(node)) -
|
|
|
|
|
+ GetOffset());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static Derived const& GetParent(IntrusiveListNode const& node) {
|
|
|
|
|
+ return *reinterpret_cast<const Derived*>(
|
|
|
|
|
+ reinterpret_cast<const char*>(std::addressof(node)) - GetOffset());
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static uintptr_t GetOffset() {
|
|
|
|
|
+ return reinterpret_cast<uintptr_t>(std::addressof(reinterpret_cast<Derived*>(0)->*Member));
|
|
|
|
|
+ }
|
|
|
|
|
+};
|
|
|
|
|
+
|
|
|
|
|
+template <class Derived>
|
|
|
|
|
+class IntrusiveListBaseNode : public IntrusiveListNode {};
|
|
|
|
|
+
|
|
|
|
|
+template <class Derived>
|
|
|
|
|
+class IntrusiveListBaseTraits {
|
|
|
|
|
+public:
|
|
|
|
|
+ using ListType = IntrusiveList<Derived, IntrusiveListBaseTraits>;
|
|
|
|
|
+
|
|
|
|
|
+private:
|
|
|
|
|
+ friend class IntrusiveList<Derived, IntrusiveListBaseTraits>;
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr IntrusiveListNode& GetNode(Derived& parent) {
|
|
|
|
|
+ return static_cast<IntrusiveListNode&>(
|
|
|
|
|
+ static_cast<IntrusiveListBaseNode<Derived>&>(parent));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr IntrusiveListNode const& GetNode(Derived const& parent) {
|
|
|
|
|
+ return static_cast<const IntrusiveListNode&>(
|
|
|
|
|
+ static_cast<const IntrusiveListBaseNode<Derived>&>(parent));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr Derived& GetParent(IntrusiveListNode& node) {
|
|
|
|
|
+ return static_cast<Derived&>(static_cast<IntrusiveListBaseNode<Derived>&>(node));
|
|
|
|
|
+ }
|
|
|
|
|
+
|
|
|
|
|
+ static constexpr Derived const& GetParent(IntrusiveListNode const& node) {
|
|
|
|
|
+ return static_cast<const Derived&>(
|
|
|
|
|
+ static_cast<const IntrusiveListBaseNode<Derived>&>(node));
|
|
|
|
|
+ }
|
|
|
|
|
+};
|
|
|
|
|
+
|
|
|
|
|
+} // namespace Common
|