fsfw/src/fsfw/cfdp/tlv/Lv.h

63 lines
1.5 KiB
C++

#ifndef FSFW_CFDP_LV_H_
#define FSFW_CFDP_LV_H_
#include <vector>
#include "fsfw/serialize/SerialBufferAdapter.h"
namespace cfdp {
/**
* @brief Length-Value field implementation
* @details
* Thin abstraction layer around a serial buffer adapter
*/
class Lv : public SerializeIF {
public:
explicit Lv(const std::vector<uint8_t>& data);
Lv(const uint8_t* value, size_t size);
Lv();
// Semantically, this class is a zero-copy helper, so the copy ctor and copy assigment do not
// really make sense here.
Lv(const Lv&) = delete;
Lv& operator=(const Lv&) = delete;
Lv(Lv&&) noexcept;
Lv& operator=(Lv&&) noexcept;
ReturnValue_t serialize(uint8_t** buffer, size_t* size, size_t maxSize,
Endianness streamEndianness) const override;
[[nodiscard]] size_t getSerializedSize() const override;
/**
* @brief Deserialize a LV field from a raw buffer
* @param buffer Raw buffer including the size field
* @param size
* @param streamEndianness
* @return
*/
ReturnValue_t deSerialize(const uint8_t** buffer, size_t* size,
Endianness streamEndianness) override;
size_t getValueLen() const;
/**
* Get value field and its size.
* @param size Optionally retrieve size. Size will be the size of the actual value field
* without the length field of the LV
* @return
*/
const uint8_t* getValue(size_t* size) const;
bool isEmpty() const;
private:
bool zeroLen = true;
SerialBufferAdapter<uint8_t> value;
};
} // namespace cfdp
#endif /* FSFW_CFDP_LV_H_ */