src/Utilities/TrackHelpers.cpp

0001 // This file is part of the ACTS project.
0002 //
0003 // Copyright (C) 2016 CERN for the benefit of the ACTS project
0004 //
0005 // This Source Code Form is subject to the terms of the Mozilla Public
0006 // License, v. 2.0. If a copy of the MPL was not distributed with this
0007 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
0008
0009 #include "Acts/Utilities/TrackHelpers.hpp"
0010
0011 #include <string>
0012
0013 namespace {
0014
0015 class TrackExtrapolationErrorCategory : public std::error_category {
0016  public:
0017   // Return a short descriptive name for the category.
0018   const char* name() const noexcept final { return "TrackExtrapolationError"; }
0019
0020   // Return what each enum means in text.
0021   std::string message(int c) const final {
0022     using Acts::TrackExtrapolationError;
0023
0024     switch (static_cast<TrackExtrapolationError>(c)) {
0025       case TrackExtrapolationError::CompatibleTrackStateNotFound:
0026         return "Did not find a compatible track state";
0027       case TrackExtrapolationError::ReferenceSurfaceUnreachable:
0028         return "Provided reference surface is unreachable";
0029       default:
0030         return "unknown";
0031     }
0032   }
0033 };
0034
0035 }  // namespace
0036
0037 std::error_code Acts::make_error_code(Acts::TrackExtrapolationError e) {
0038   static const TrackExtrapolationErrorCategory c;
0039   return {static_cast<int>(e), c};
0040 }