src/Propagator/PropagatorError.cpp

0001 // This file is part of the Acts project.
0002 //
0003 // Copyright (C) 2020 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 http://mozilla.org/MPL/2.0/.
0008
0009 #include "Acts/Propagator/PropagatorError.hpp"
0010
0011 #include <string>
0012
0013 namespace {
0014
0015 class PropagatorErrorCategory : public std::error_category {
0016  public:
0017   // Return a short descriptive name for the category.
0018   const char* name() const noexcept final { return "PropagatorError"; }
0019
0020   // Return what each enum means in text.
0021   std::string message(int c) const final {
0022     using Acts::PropagatorError;
0023
0024     switch (static_cast<PropagatorError>(c)) {
0025       case PropagatorError::Failure:
0026         return "Propagation failed";
0027       case PropagatorError::WrongDirection:
0028         return "Propagation occurred in the wrong direction";
0029       case PropagatorError::StepCountLimitReached:
0030         return "Propagation reached the configured maximum number of steps";
0031       default:
0032         return "unknown";
0033     }
0034   }
0035 };
0036
0037 }  // namespace
0038
0039 std::error_code Acts::make_error_code(Acts::PropagatorError e) {
0040   static PropagatorErrorCategory c;
0041   return {static_cast<int>(e), c};
0042 }