VoidPropagatorComponents.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 {

namespace detail {
struct VoidNavigator {
  struct State {
    const Surface* startSurface = nullptr;

    const Surface* currentSurface = nullptr;

    const Surface* targetSurface = nullptr;

    bool targetReached = false;

    bool navigationBreak = false;
  };

  using state_type = State;

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

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

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

}  // namespace detail
}  // namespace Acts