2020-06-17 20:53:10 +02:00
|
|
|
#ifndef FRAMEWORK_CONTAINER_SINGLYLINKEDLIST_H_
|
|
|
|
#define FRAMEWORK_CONTAINER_SINGLYLINKEDLIST_H_
|
|
|
|
|
|
|
|
#include <cstddef>
|
|
|
|
#include <cstdint>
|
2016-06-15 23:48:41 +02:00
|
|
|
|
2019-08-28 14:50:24 +02:00
|
|
|
/**
|
2021-01-28 11:50:33 +01:00
|
|
|
* @brief Linked list data structure,
|
|
|
|
* each entry has a pointer to the next entry (singly)
|
2020-06-17 20:53:10 +02:00
|
|
|
* @ingroup container
|
2019-08-28 14:50:24 +02:00
|
|
|
*/
|
2022-02-02 10:29:30 +01:00
|
|
|
template <typename T>
|
2016-06-15 23:48:41 +02:00
|
|
|
class LinkedElement {
|
2022-02-02 10:29:30 +01:00
|
|
|
public:
|
|
|
|
T* value;
|
|
|
|
class Iterator {
|
|
|
|
public:
|
|
|
|
LinkedElement<T>* value = nullptr;
|
|
|
|
Iterator() {}
|
|
|
|
|
|
|
|
Iterator(LinkedElement<T>* element) : value(element) {}
|
|
|
|
|
|
|
|
Iterator& operator++() {
|
|
|
|
value = value->getNext();
|
|
|
|
return *this;
|
2021-01-28 11:50:33 +01:00
|
|
|
}
|
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
Iterator operator++(int) {
|
|
|
|
Iterator tmp(*this);
|
|
|
|
operator++();
|
|
|
|
return tmp;
|
2021-01-28 11:50:33 +01:00
|
|
|
}
|
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
bool operator==(Iterator other) { return value == other.value; }
|
2021-01-28 11:50:33 +01:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
bool operator!=(Iterator other) { return !(*this == other); }
|
|
|
|
T* operator->() { return value->value; }
|
|
|
|
};
|
|
|
|
|
|
|
|
LinkedElement(T* setElement, LinkedElement<T>* setNext = nullptr)
|
|
|
|
: value(setElement), next(setNext) {}
|
|
|
|
|
|
|
|
virtual ~LinkedElement() {}
|
|
|
|
|
|
|
|
virtual LinkedElement* getNext() const { return next; }
|
|
|
|
|
|
|
|
virtual void setNext(LinkedElement* next) { this->next = next; }
|
|
|
|
|
|
|
|
virtual void setEnd() { this->next = nullptr; }
|
|
|
|
|
|
|
|
LinkedElement* begin() { return this; }
|
|
|
|
LinkedElement* end() { return nullptr; }
|
|
|
|
|
|
|
|
private:
|
|
|
|
LinkedElement* next;
|
2016-06-15 23:48:41 +02:00
|
|
|
};
|
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
template <typename T>
|
2016-06-15 23:48:41 +02:00
|
|
|
class SinglyLinkedList {
|
2022-02-02 10:29:30 +01:00
|
|
|
public:
|
|
|
|
using ElementIterator = typename LinkedElement<T>::Iterator;
|
2020-06-17 20:53:10 +02:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
SinglyLinkedList() {}
|
2021-01-28 11:50:33 +01:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
SinglyLinkedList(ElementIterator start) : start(start.value) {}
|
2021-01-28 11:50:33 +01:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
SinglyLinkedList(LinkedElement<T>* startElement) : start(startElement) {}
|
2021-01-28 11:50:33 +01:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
ElementIterator begin() const { return ElementIterator::Iterator(start); }
|
2021-01-28 11:50:33 +01:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
/** Returns iterator to nulltr */
|
|
|
|
ElementIterator end() const { return ElementIterator::Iterator(); }
|
2021-01-28 11:50:33 +01:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
/**
|
|
|
|
* Returns last element in singly linked list.
|
|
|
|
* @return
|
|
|
|
*/
|
|
|
|
ElementIterator back() const {
|
|
|
|
LinkedElement<T>* element = start;
|
|
|
|
while (element->getNext() != nullptr) {
|
|
|
|
element = element->getNext();
|
2021-01-28 11:50:33 +01:00
|
|
|
}
|
2022-02-02 10:29:30 +01:00
|
|
|
return ElementIterator::Iterator(element);
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t getSize() const {
|
|
|
|
size_t size = 0;
|
|
|
|
LinkedElement<T>* element = start;
|
|
|
|
while (element != nullptr) {
|
|
|
|
size++;
|
|
|
|
element = element->getNext();
|
2021-01-28 11:50:33 +01:00
|
|
|
}
|
2022-02-02 10:29:30 +01:00
|
|
|
return size;
|
|
|
|
}
|
|
|
|
void setStart(LinkedElement<T>* firstElement) { start = firstElement; }
|
|
|
|
|
|
|
|
void setNext(LinkedElement<T>* currentElement, LinkedElement<T>* nextElement) {
|
|
|
|
currentElement->setNext(nextElement);
|
|
|
|
}
|
|
|
|
|
|
|
|
void setLast(LinkedElement<T>* lastElement) { lastElement->setEnd(); }
|
|
|
|
|
|
|
|
void insertElement(LinkedElement<T>* element, size_t position) {
|
|
|
|
LinkedElement<T>* currentElement = start;
|
|
|
|
for (size_t count = 0; count < position; count++) {
|
|
|
|
if (currentElement == nullptr) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
currentElement = currentElement->getNext();
|
2021-01-28 11:50:33 +01:00
|
|
|
}
|
2022-02-02 10:29:30 +01:00
|
|
|
LinkedElement<T>* elementAfterCurrent = currentElement->next;
|
|
|
|
currentElement->setNext(element);
|
|
|
|
if (elementAfterCurrent != nullptr) {
|
|
|
|
element->setNext(elementAfterCurrent);
|
2021-01-28 11:50:33 +01:00
|
|
|
}
|
2022-02-02 10:29:30 +01:00
|
|
|
}
|
2020-06-17 20:53:10 +02:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
void insertBack(LinkedElement<T>* lastElement) { back().value->setNext(lastElement); }
|
2020-06-17 20:53:10 +02:00
|
|
|
|
2022-02-02 10:29:30 +01:00
|
|
|
protected:
|
|
|
|
LinkedElement<T>* start = nullptr;
|
2016-06-15 23:48:41 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
#endif /* SINGLYLINKEDLIST_H_ */
|