WrapperCast.hpp

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/*
 * WrapperCast.hpp
 *
 *  Created on: 04 Dec 2017
 *      Author: Nicola Mori
 */

#ifndef WRAPPERCAST_HPP_
#define WRAPPERCAST_HPP_

#include "core/InheritsFrom.h"
#include "core/ObjectWrapper.h"
#include "core/ObserverPtr.h"

namespace EA {

void *wrapper_cast(ObjectWrapper &wrapper, const std::type_info &typeInfo);

template <typename DataType>
observer_ptr<typename std::enable_if<std::is_class<DataType>::value, DataType>::type>
wrapper_cast(ObjectWrapper &wrapper) {
  return observer_ptr<DataType>((DataType *)(wrapper_cast(wrapper, typeid(DataType))));
}

template <typename DataType>
observer_ptr<typename std::enable_if<!std::is_class<DataType>::value, DataType>::type>
wrapper_cast(ObjectWrapper &wrapper) {
  const ObjectWrapperBase *content = wrapper.content.get();
  if (!content)
    return nullptr;
  if (typeid(ObjectWrapperT<DataType>) == typeid(*content)) {
    return ((ObjectWrapperT<DataType> *)(wrapper.content.get()))->GetObj();
  }
  return nullptr;
}

} // namespace EA
#endif /* WRAPPERCAST_HPP_ */