genericobserver.hh

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// SPDX-FileCopyrightText: 2021-2024 The Ikarus Developers mueller@ibb.uni-stuttgart.de
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#pragma once
#include <concepts>
#include <string>
 
#include <spdlog/spdlog.h>
 
#include <ikarus/utils/observer/observer.hh>
#include <ikarus/utils/observer/observermessages.hh>
 
namespace Ikarus {
 
template <typename M>
class GenericObserver : public IObserver<M>
{
  using Messages = M;
 
public:
  template <typename F>
  GenericObserver(Messages message, F&& f)
      : message_{message},
        f_{f} {}
  void updateImpl(Messages message) override {
    if (message_ == message) {
      f_(step_);
      ++step_;
    }
  }
 
private:
  Messages message_;
  std::function<void(int)> f_;
  int step_{0};
};
} // namespace Ikarus