src/Vertexing/VertexingError.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/Vertexing/VertexingError.hpp"
0010
0011 #include <string>
0012
0013 namespace {
0014
0015 class VertexingErrorCategory : public std::error_category {
0016  public:
0017   // Return a short descriptive name for the category.
0018   const char* name() const noexcept final { return "KalmanFitterError"; }
0019
0020   // Return what each enum means in text.
0021   std::string message(int c) const final {
0022     using Acts::VertexingError;
0023
0024     switch (static_cast<VertexingError>(c)) {
0025       case VertexingError::NumericFailure:
0026         return "Numeric failure in calculation.";
0027       case VertexingError::EmptyInput:
0028         return "Empty input provided.";
0029       case VertexingError::SeedingError:
0030         return "Error while finding vertex seed.";
0031       case VertexingError::NotConverged:
0032         return "Unable to converge.";
0033       case VertexingError::ElementNotFound:
0034         return "Unable to find element.";
0035       case VertexingError::NoCovariance:
0036         return "No covariance provided.";
0037       case VertexingError::SingularMatrix:
0038         return "Encountered non-invertible matrix.";
0039       case VertexingError::NonPositiveVariance:
0040         return "Encountered negative or zero variance.";
0041       case VertexingError::MatrixNotPositiveDefinite:
0042         return "Encountered a matrix that is not positive definite.";
0043       case VertexingError::InvalidInput:
0044         return "Invalid input provided.";
0045       default:
0046         return "unknown";
0047     }
0048   }
0049 };
0050
0051 }  // namespace
0052
0053 std::error_code Acts::make_error_code(Acts::VertexingError e) {
0054   static VertexingErrorCategory c;
0055   return {static_cast<int>(e), c};
0056 }