fsfw/serialize/SerialLinkedListAdapter.h

129 lines
4.5 KiB
C++

#ifndef FSFW_SERIALIZE_SERIALLINKEDLISTADAPTER_H_
#define FSFW_SERIALIZE_SERIALLINKEDLISTADAPTER_H_
#include "../container/SinglyLinkedList.h"
#include "SerializeAdapter.h"
#include "SerializeElement.h"
#include "SerializeIF.h"
/**
* @brief Implement the conversion of object data to data streams
* or vice-versa, using linked lists.
* @details
* An alternative to the AutoSerializeAdapter functions
* - All object members with a datatype are declared as
* SerializeElement<element_type> members inside the class
* implementing this adapter.
* - The element type can also be a SerialBufferAdapter to
* de-/serialize buffers.
* - The element type can also be a SerialFixedArrayListAdapter to
* de-/serialize buffers with a size header, which is scanned automatically.
*
* The sequence of objects is defined in the constructor by using
* the setStart and setNext functions.
*
* 1. The serialization process is done by instantiating the class and
* calling serialize after all SerializeElement entries have been set by
* using the constructor or setter functions. An additional size variable
* can be supplied which is calculated/incremented automatically.
* 2. The deserialization process is done by instantiating the class and
* supplying a buffer with the data which is converted into an object.
* The size of data to serialize can be supplied and is
* decremented in the function. Range checking is done internally.
* @author baetz
* @ingroup serialize
*/
template<typename T, typename count_t = uint8_t>
class SerialLinkedListAdapter: public SinglyLinkedList<T>, public SerializeIF {
public:
SerialLinkedListAdapter(typename LinkedElement<T>::Iterator start,
bool printCount = false) :
SinglyLinkedList<T>(start), printCount(printCount) {
}
SerialLinkedListAdapter(LinkedElement<T>* first, bool printCount = false) :
SinglyLinkedList<T>(first), printCount(printCount) {
}
SerialLinkedListAdapter(bool printCount = false) :
SinglyLinkedList<T>(), printCount(printCount) {
}
virtual ReturnValue_t serialize(uint8_t** buffer, size_t* size,
size_t maxSize, Endianness streamEndianness) const override {
if (printCount) {
count_t mySize = SinglyLinkedList<T>::getSize();
ReturnValue_t result = SerializeAdapter::serialize(&mySize,
buffer, size, maxSize, streamEndianness);
if (result != HasReturnvaluesIF::RETURN_OK) {
return result;
}
}
return serialize(SinglyLinkedList<T>::start, buffer, size, maxSize,
streamEndianness);
}
static ReturnValue_t serialize(const LinkedElement<T>* element,
uint8_t** buffer, size_t* size, size_t maxSize,
Endianness streamEndianness) {
ReturnValue_t result = HasReturnvaluesIF::RETURN_OK;
while ((result == HasReturnvaluesIF::RETURN_OK) and (element != nullptr)) {
result = element->value->serialize(buffer, size, maxSize,
streamEndianness);
element = element->getNext();
}
return result;
}
virtual size_t getSerializedSize() const override {
if (printCount) {
return SerialLinkedListAdapter<T>::getSerializedSize()
+ sizeof(count_t);
} else {
return getSerializedSize(SinglyLinkedList<T>::start);
}
}
static size_t getSerializedSize(const LinkedElement<T> *element) {
size_t size = 0;
while (element != nullptr) {
size += element->value->getSerializedSize();
element = element->getNext();
}
return size;
}
virtual ReturnValue_t deSerialize(const uint8_t** buffer, size_t* size,
Endianness streamEndianness) override {
return deSerialize(SinglyLinkedList<T>::start, buffer, size,
streamEndianness);
}
static ReturnValue_t deSerialize(LinkedElement<T>* element,
const uint8_t** buffer, size_t* size, Endianness streamEndianness) {
ReturnValue_t result = HasReturnvaluesIF::RETURN_OK;
while ((result == HasReturnvaluesIF::RETURN_OK) and (element != nullptr)) {
result = element->value->deSerialize(buffer, size, streamEndianness);
element = element->getNext();
}
return result;
}
/**
* Copying is forbidden by deleting the copy constructor and the copy
* assignment operator because of the pointers to the linked list members.
* Unless the child class implements an own copy constructor or
* copy assignment operator, these operation will throw a compiler error.
* @param
*/
SerialLinkedListAdapter(const SerialLinkedListAdapter &) = delete;
SerialLinkedListAdapter& operator=(const SerialLinkedListAdapter&) = delete;
bool printCount;
};
#endif /* FSFW_SERIALIZE_SERIALLINKEDLISTADAPTER_H_ */