BDSException.hh

/* 
Beam Delivery Simulation (BDSIM) Copyright (C) Royal Holloway, 
University of London 2001 - 2022.
 
This file is part of BDSIM.
 
BDSIM is free software: you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published 
by the Free Software Foundation version 3 of the License.
 
BDSIM is distributed in the hope that it will be useful, but 
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with BDSIM.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BDSEXCEPTION_H
#define BDSEXCEPTION_H
 
#include <exception>
#include <string>
 
class BDSException: public std::exception
{
public:
  explicit BDSException(const std::string& messageIn) noexcept:
    name(""),
    message(messageIn),
    completeString(messageIn)
  {;}
  BDSException(const std::string& nameIn, const std::string& messageIn) noexcept:
    name(nameIn),
    message(messageIn),
    completeString(nameIn + " : " + messageIn)
  {;}
  BDSException(const BDSException& other) noexcept:
    name(other.name),
    message(other.message),
    completeString(other.completeString)
  {;}
  virtual ~BDSException(){;}
 
  const char* what() const noexcept override
  {return name.empty() ? message.c_str() : completeString.c_str();}
 
  void SetName(const std::string& nameIn) {name = nameIn; completeString = nameIn + " : " + message;}
  void AppendToMessage(const std::string& messageIn) {message += " " + messageIn; completeString += " " + messageIn;}
 
  std::string name;
  std::string message;
  std::string completeString;
};
 
#endif