SimulatorObserver.h

Go to the documentation of this file.

 
#pragma once
 
#ifndef _SIMULATOR_OBSERVER_H_
#define _SIMULATOR_OBSERVER_H_
 
#include <memory>
#include <vector>
 
#include "../Types.h"
 
namespace Simulators {

// either derive from this or use the following proxy class (advantage for that:
// no need to derive the Impl class from the interface, just implement 'Update')
class ISimulatorObserver
    : public std::enable_shared_from_this<ISimulatorObserver> {
public:
  virtual ~ISimulatorObserver() = default;

  virtual void Update(const Types::qubits_vector &qubits) = 0;

  std::shared_ptr<ISimulatorObserver> getptr() { return shared_from_this(); }
};

template <class Impl> class SimulatorObserverProxy : public ISimulatorObserver {
public:
  SimulatorObserverProxy(const std::shared_ptr<Impl> &impl) : impl(impl) {}

  void Update(const Types::qubits_vector &qubits) override {
    if (impl)
      impl->Update(qubits);
  }
 
private:
  std::shared_ptr<Impl>
      impl; 
};
 
} // namespace Simulators
 
#endif // _SIMULATOR_OBSERVER_H_