EventSourceInterface.hpp

#ifndef ZAO_ENDPOINT_EVENT_SOURCE_INTERFACE_HPP_
#define ZAO_ENDPOINT_EVENT_SOURCE_INTERFACE_HPP_
 
#include <memory>
#include <type_traits>
 
namespace zao {
namespace endpoint {
 
struct StoreAsWeakPtrType {
  explicit StoreAsWeakPtrType() = default;
};
 
constexpr StoreAsWeakPtrType StoreAsWeakPtr{};
 
template <class T>
class EventSourceInterface {
 public:
  virtual void RegisterCallback(std::shared_ptr<T> listener) = 0;
 
  virtual void RegisterCallback(std::weak_ptr<T> listener_weak,
                                StoreAsWeakPtrType) = 0;
 
  virtual void RegisterCallback(std::unique_ptr<T> listener) = 0;
 
  virtual ~EventSourceInterface() noexcept = default;
};
 
}  // namespace endpoint
}  // namespace zao
 
#endif  // ZAO_ENDPOINT_EVENT_SOURCE_INTERFACE_HPP_