DebugOutputActor.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2018 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

namespace Acts {


struct DebugOutputActor {
  bool mute = false;

  struct this_result {
    std::string debugString = "";
  };

  using result_type = this_result;

  template <typename propagator_state_t, typename stepper_t>
  void operator()(propagator_state_t& state, const stepper_t& /*unused*/,
                  result_type& result) const {
    // move the debug output from the state to
    // to the output actor if it is not set to mute
    // only when the target is reached (or later otherwise triggered)
    if (!mute &&
        (state.navigation.targetReached || state.navigation.navigationBreak)) {
      result.debugString += state.options.debugString;
      state.options.debugString = "";
    }
  }

  template <typename propagator_state_t, typename stepper_t>
  void operator()(propagator_state_t& /*state*/,
                  const stepper_t& /*unused*/) const {}
};

}  // namespace Acts