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AbortList.hpp
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1 // This file is part of the Acts project.
2 //
3 // Copyright (C) 2016-2018 CERN for the benefit of the Acts project
4 //
5 // This Source Code Form is subject to the terms of the Mozilla Public
6 // License, v. 2.0. If a copy of the MPL was not distributed with this
7 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 
9 #pragma once
10 
16 
17 #include <boost/hana/type.hpp>
18 #include <boost/hana/unpack.hpp>
19 
20 namespace hana = boost::hana;
21 
22 namespace Acts {
23 
32 template <typename... aborters_t>
33 struct AbortList : public detail::Extendable<aborters_t...> {
34  private:
35  static_assert(not detail::has_duplicates_v<aborters_t...>,
36  "same aborter type specified several times");
37 
38  using detail::Extendable<aborters_t...>::tuple;
39 
40  public:
41  // This uses the type collector
42  using result_type = typename decltype(hana::unpack(
43  detail::type_collector_t<detail::action_type_extractor, aborters_t...>,
44  hana::template_<AbortList>))::type;
45 
46  using detail::Extendable<aborters_t...>::get;
47 
49  AbortList() = default;
50 
54  AbortList(const AbortList<aborters_t...>& aborters) = default;
55 
59  AbortList(AbortList<aborters_t...>&& aborters) = default;
60 
64  AbortList<aborters_t...>& operator=(
65  const AbortList<aborters_t...>& aborters) = default;
66 
70  AbortList<aborters_t...>& operator=(AbortList<aborters_t...>&& aborters) =
71  default;
72 
76  AbortList(const std::tuple<aborters_t...>& aborters)
77  : detail::Extendable<aborters_t...>(aborters) {}
78 
82  AbortList(std::tuple<aborters_t...>&& aborters)
83  : detail::Extendable<aborters_t...>(std::move(aborters)) {}
84 
86  template <typename... appendices_t>
87  AbortList<aborters_t..., appendices_t...> append(appendices_t... aps) const {
88  auto catTuple =
89  std::tuple_cat(tuple(), std::tuple<appendices_t...>(aps...));
90  return AbortList<aborters_t..., appendices_t...>(std::move(catTuple));
91  }
92 
103  template <typename result_t, typename propagator_state_t, typename stepper_t>
104  bool operator()(const result_t& result, propagator_state_t& state,
105  const stepper_t& stepper) const {
106  // clang-format off
108  aborters_t,
109  propagator_state_t, stepper_t>...>,
110  "not all aborters support the specified input");
111  // clang-format on
112 
113  return detail::abort_list_impl<aborters_t...>::check(tuple(), result, state,
114  stepper);
115  }
116 };
117 
118 } // namespace Acts