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|
#ifndef ODFAEG_SERIALIZATION
#define ODFAEG_SERIALIZATION
#include <iostream>
#include <typeinfo>
#include "tuple.h"
#include <tuple>
namespace odfaeg {
template <int N, typename B, typename T, typename A>
struct serializer {
static void checkType (B* base, T tuple, A & ar) {
if (std::get<N>(tuple) != nullptr && typeid(*base) == typeid(*std::get<N>(tuple))) {
std::get<N>(tuple)->serialize(ar);
}
serializer<N-1, B, T, A>::checkType(base, tuple, ar);
}
};
template <typename B, typename T, typename A>
struct serializer <0, B, T, A> {
static void checkType (B* base, T tuple, A & ar) {
if (std::get<0>(tuple) != nullptr && typeid(*base) == typeid(*std::get<0>(tuple))) {
std::get<0>(tuple)->serialize(ar);
} else if (base != nullptr) {
base->serialize(ar);
}
}
};
template <int N, typename T>
struct sinitializer {
static void initialize (T tuple) {
std::get<N>(tuple) = nullptr;
sinitializer<N-1, T>::initialize(tuple);
}
};
template <typename T>
struct sinitializer <0, T> {
static void initialize (T tuple) {
std::get<0>(tuple) = nullptr;
}
};
template <int N, typename B, typename T>
struct sallocator {
static B* instanciate (int index, T tuple) {
if (N == index) {
using D = typename std::remove_pointer<typename std::tuple_element<N, T>::type>::type;
return new D();
}
sallocator<N-1, B, T>::instanciate(index, tuple);
}
};
template <typename B, typename T>
struct sallocator <0, B, T> {
static B* instanciate (int index, T tuple) {
using D = typename std::remove_pointer<typename std::tuple_element<0, T>::type>::type;
return new D();
}
};
template <int N, typename B, typename T>
struct sindex {
static int getIndex (B* base, T tuple) {
if (std::get<N>(tuple) != nullptr && typeid(*base) == typeid(*std::get<N>(tuple))) {
return N;
}
sindex<N-1, B, T>::getIndex(base, tuple);
}
};
template <typename B, typename T>
struct sindex <0, B, T> {
static int getIndex (B* base, T tuple) {
using D = typename std::remove_pointer<typename std::tuple_element<0, T>::type>::type;
D* derived = new D();
if (std::get<0>(tuple) != nullptr && typeid(*base) == typeid(*std::get<0>(tuple))) {
return 0;
}
return -1;
}
};
template <class B, class... D>
class Serializer {
public :
Serializer() {
baseObject = nullptr;
if (std::tuple_size<decltype(derivedClasses)>::value > 0)
sinitializer<std::tuple_size<decltype(derivedClasses)>::value-1, decltype(derivedClasses)>::initialize(derivedClasses);
}
Serializer(B* baseObject) : baseObject(baseObject) {
fillTuple(derivedClasses);
}
void setObject(B* baseObject) {
this->baseObject = baseObject;
fillTuple(derivedClasses);
}
template<int... S>
void fillTuple(std::tuple<D*...> types) {
fillTuple(typename helper::gens<sizeof...(D)>::type(), types);
}
template<int... S>
void fillTuple(helper::seq<S...>, std::tuple<D*...> params) {
derivedClasses = std::forward_as_tuple(dynamic_cast<typename std::remove_reference<decltype(std::get<S>(params))>::type> (baseObject)...);
}
template <typename Archive>
void serialize(Archive & ar) {
if (std::tuple_size<decltype(derivedClasses)>::value > 0)
serializer<std::tuple_size<decltype(derivedClasses)>::value-1, B, decltype(derivedClasses), Archive>::checkType(baseObject, derivedClasses, ar);
else
baseObject->serialize(ar);
}
virtual void onSave() {
}
virtual void onLoad() {
}
B* sallocate(int index) {
if (std::tuple_size<decltype(derivedClasses)>::value > 0)
return sallocator<std::tuple_size<decltype(derivedClasses)>::value-1, B, decltype(derivedClasses)>::instanciate(index, derivedClasses);
}
int getIndex() {
if (std::tuple_size<decltype(derivedClasses)>::value > 0)
return sindex<std::tuple_size<decltype(derivedClasses)>::value-1, B, decltype(derivedClasses)>::getIndex(baseObject, derivedClasses);
return -1;
}
private :
B* baseObject;
std::tuple<D*...> derivedClasses;
};
}
#endif // SERIALIZATION |
