68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
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#ifndef STATICLINKEDLIST_H
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#define STATICLINKEDLIST_H
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#include "LinkedList.h"
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namespace Kylin {
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template <typename T, size_t N>
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class StaticLinkedList : public LinkedList<T> {
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using Node = typename LinkedList<T>::Node;
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struct StaticNode : public Node {
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void *operator new(size_t /*size*/, void *p) { return p; }
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};
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public:
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StaticLinkedList() = default;
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StaticLinkedList(const StaticLinkedList &other) {
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auto sourceNode = other.m_header.next;
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auto targetNode = reinterpret_cast<Node *>(&this->m_header);
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while (sourceNode != nullptr) {
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auto newNode = create();
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if (newNode == nullptr) THROW_EXCEPTION(NoEnoughMemoryException, "No memory to create node...");
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newNode->value = sourceNode->value;
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targetNode->next = newNode;
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targetNode = newNode;
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sourceNode = sourceNode->next;
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this->m_size++;
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targetNode->next = nullptr;
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this->m_last = targetNode;
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}
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}
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~StaticLinkedList() { this->clear(); }
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size_t capacity() const { return N; }
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void swap(StaticLinkedList & /*other*/) {
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THROW_EXCEPTION(InvalidOperationException, "StaticLinkedList can`t do swap operate.");
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}
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protected:
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Node *create() override {
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Node *ret = nullptr;
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for (size_t i = 0; i < N; i++) {
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if (m_used[i]) continue;
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ret = reinterpret_cast<StaticNode *>(m_space) + i;
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ret = new (ret) StaticNode();
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m_used[i] = true;
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break;
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}
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return ret;
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}
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void destroy(Node *p) override {
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auto del = dynamic_cast<StaticNode *>(p);
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for (size_t i = 0; i < N; i++) {
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if ((reinterpret_cast<StaticNode *>(m_space) + i) != del) continue;
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m_used[i] = false;
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del->~StaticNode();
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break;
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}
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}
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private:
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uint8_t m_space[N * sizeof(StaticNode)];
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bool m_used[N]{false};
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};
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} // namespace Kylin
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#endif // STATICLINKEDLIST_H
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