118 lines
2.9 KiB
C++
118 lines
2.9 KiB
C++
/**
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* @file SerializeAdapterInternal.h
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*
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* @date 13.04.2020
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* @author R. Mueller
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*/
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#ifndef FRAMEWORK_SERIALIZE_SERIALIZEADAPTERINTERNAL_H_
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#define FRAMEWORK_SERIALIZE_SERIALIZEADAPTERINTERNAL_H_
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#include <framework/returnvalues/HasReturnvaluesIF.h>
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#include <framework/container/IsDerivedFrom.h>
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#include <framework/serialize/EndianSwapper.h>
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/**
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* This template specialization will be chosen for fundamental types,
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* based on partial template specialization
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* @tparam T
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* @tparam
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*/
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template<typename T, int>
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class SerializeAdapter_ {
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public:
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/**
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*
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* @param object
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* @param buffer
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* @param size
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* @param max_size
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* @param bigEndian
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* @return
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*/
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static ReturnValue_t serialize(const T* object, uint8_t** buffer,
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size_t* size, const size_t max_size, bool bigEndian) {
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// function eventuelly serializes structs here.
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// does this work on every architecture?
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// static_assert(std::is_fundamental<T>::value);
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size_t ignoredSize = 0;
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if (size == nullptr) {
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size = &ignoredSize;
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}
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if (sizeof(T) + *size <= max_size) {
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T tmp;
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if (bigEndian) {
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tmp = EndianSwapper::swap<T>(*object);
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} else {
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tmp = *object;
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}
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memcpy(*buffer, &tmp, sizeof(T));
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*size += sizeof(T);
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(*buffer) += sizeof(T);
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return HasReturnvaluesIF::RETURN_OK;
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} else {
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return SerializeIF::BUFFER_TOO_SHORT;
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}
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}
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/**
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* Deserialize buffer into object
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* @param object [out] Object to be deserialized with buffer data
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* @param buffer contains the data. Non-Const pointer to non-const
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* pointer to const data.
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* @param size Size to deSerialize. wil be decremented by sizeof(T)
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* @param bigEndian Specify endianness
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* @return
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*/
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ReturnValue_t deSerialize(T* object, const uint8_t** buffer, size_t* size,
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bool bigEndian) {
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T tmp;
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if (*size >= sizeof(T)) {
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*size -= sizeof(T);
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memcpy(&tmp, *buffer, sizeof(T));
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if (bigEndian) {
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*object = EndianSwapper::swap<T>(tmp);
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} else {
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*object = tmp;
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}
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*buffer += sizeof(T);
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return HasReturnvaluesIF::RETURN_OK;
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} else {
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return SerializeIF::STREAM_TOO_SHORT;
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}
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}
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size_t getSerializedSize(const T * object) {
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return sizeof(T);
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}
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};
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/**
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* This template specialization will be chosen for class derived from
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* SerializeIF, based on partial template specialization.
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* @tparam T
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* @tparam
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*/
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template<typename T>
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class SerializeAdapter_<T, true> {
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public:
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ReturnValue_t serialize(const T* object, uint8_t** buffer, size_t* size,
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const size_t max_size, bool bigEndian) const {
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size_t ignoredSize = 0;
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if (size == NULL) {
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size = &ignoredSize;
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}
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return object->serialize(buffer, size, max_size, bigEndian);
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}
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size_t getSerializedSize(const T* object) const {
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return object->getSerializedSize();
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}
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ReturnValue_t deSerialize(T* object, const uint8_t** buffer, size_t* size,
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bool bigEndian) {
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return object->deSerialize(buffer, size, bigEndian);
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}
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};
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#endif /* FRAMEWORK_SERIALIZE_SERIALIZEADAPTERINTERNAL_H_ */
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