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#ifndef TUPLE
#define TUPLE
#include <map>
#include <vector>
#include <iostream>
#include <typeinfo>
namespace odfaeg {
namespace helper {
template <int...> struct seq {};
template<int N, int ...S> struct gens : gens<N-1, N-1, S...> {
};
template<int ...S> struct gens<0, S...>{
typedef seq<S...> type;
};
}
template <typename B>
class DynamicTupleBaseElement {
public :
DynamicTupleBaseElement() {
}
virtual B get() const {
std::cout<<"get base element"<<std::endl;
}
};
template<typename E, typename B>
class DynamicTupleElement : public DynamicTupleBaseElement<B> {
public :
DynamicTupleElement(E element) {
std::cout<<typeid(element).name()<<std::endl;
this->element = element;
}
E get() const {
std::cout<<"get derived element"<<std::endl;
return element;
}
E element;
};
template <typename B>
class DynamicTuple {
private :
typename std::map<std::string, DynamicTupleBaseElement<B>*>::iterator f (std::string type) {
return elements.find(type);
}
std::map<std::string, DynamicTupleBaseElement<B>*> elements;
public :
template <typename E>
void addElement (std::string type, E element) {
DynamicTupleBaseElement<B>* base_element = new DynamicTupleElement<E, B>(element);
elements[type] = base_element;
}
template <typename E>
bool exists (E element) {
typename std::map<std::string, DynamicTupleBaseElement<B>*>::iterator it;
for (it = elements.begin(); it != elements.end(); it++) {
if (std::is_same<decltype(it->second->get()), E>::value)
return true;
}
return false;
}
template <typename E>
std::string getType(E element) {
typename std::map<std::string, DynamicTupleBaseElement<B>*>::iterator it;
for (it = elements.begin(); it != elements.end(); it++) {
if (std::is_same<decltype(it->second->get()), E>::value)
return it->first;
}
}
auto get(std::string type) -> decltype(this->f(type)->second->get()) {
std::cout<<typeid(decltype(this->f(type)->second->get()))
.name()<<std::endl;
return elements[type]->get();
}
};
} |
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