Acts/TrackFitting/GsfError.hpp

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 #pragma once
0010
0011 #include <system_error>
0012 #include <type_traits>
0013
0014 namespace Acts {
0015
0016 /// Error codes for Gaussian Sum Filter operations
0017 /// @ingroup errors
0018 enum class GsfError {
0019   /// Start parameters have no Covariance
0020   StartParametersHaveNoCovariance,
0021   /// No measurement states found in the forward pass
0022   NoMeasurementStatesCreatedForward,
0023   /// No measurement states found in the backward pass
0024   NoMeasurementStatesCreatedBackward,
0025   /// No measurement states in the final trajectory
0026   NoMeasurementStatesCreatedFinal,
0027 };
0028
0029 /// Create error code from @ref GsfError
0030 /// @param e The error code enum value
0031 /// @return Standard error code
0032 std::error_code make_error_code(GsfError e);
0033
0034 }  // namespace Acts
0035
0036 // register with STL
0037 namespace std {
0038 template <>
0039 struct is_error_code_enum<Acts::GsfError> : std::true_type {};
0040 }  // namespace std