Exception.hh

/*
** TowBowlTactics, a turn-based strategy football game.
** 
** Copyright (C) 2006-2010 The TBT Team.
** 
** This program 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; either version 2
** of the License, or (at your option) any later version.
** 
** The complete GNU General Public Licence Notice can be found as the
** `NOTICE' file in the root directory.
** 
** The TBT Team consists of people listed in the `AUTHORS' file.
*/

#ifndef EXCEPTION_HH_
# define EXCEPTION_HH_

# include <string>
# include <sstream>

class Exception
{
public:
  Exception();
  Exception(const std::string& msg);
  virtual ~Exception();

  const std::string& what() const;
  friend std::ostream& operator<< (std::ostream& os, const Exception& e);
  
protected:
  std::string msg_;
};


inline Exception::Exception()
  : msg_("Undefined exception")
{
}

inline Exception::Exception(const std::string& msg)
  : msg_(msg)
{
}

inline Exception::~Exception()
{
}

inline const std::string& Exception::what() const
{
  return msg_;
}

inline std::ostream& operator<< (std::ostream& os, const Exception& e)
{
  os << e.msg_;
  return os;
}


# define THROW(Excpt, Msg)                      \
do {                                            \
  std::ostringstream os;                        \
  os << Msg;                                    \
  throw Excpt(os.rdbuf()->str());               \
} while (0)

# define PRINT_AND_THROW(Excpt, Msg)            \
do {                                            \
  std::ostringstream os;                        \
  os << Msg;                                    \
  Excpt e(os.rdbuf()->str());                   \
  ERR(e.what());                                \
  throw e;                                      \
} while (0)


#endif /* !EXCEPTION_HH_ */