IPOException.hpp

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/*
 * $Id: IPOException.hpp 179 2014-10-21 18:42:00Z jdl3 $
 * Copyright (C) 2008, 2010, 2013, 2014 John D Lamb
 * Allows creation of runtime exceptions
 *
 * what() returns the exception message
 *
 * 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.
 * 
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef IPOEXCEPTION_H
#define IPOEXCEPTION_H

#include<iostream>
#include<string>

#define IPOE(message) IPOException( message, __FILE__, __LINE__ )

#define RETHROW(function)                    \
  struct {                           \
    void operator()( std::string s, char const * const fileName, \
             int const lineNumber ){             \
      std::cerr << "Exception caught and rethrown in "       \
        <<  s << ", " << fileName << ":" << lineNumber   \
        << std::endl;                    \
    }                                \
  } rethrow_message;                         \
  rethrow_message( function, __FILE__, __LINE__ );       \
  throw;
    
namespace ipo {

  class IPOException {
  public:
    IPOException( const std::string &exceptionMessage,
          char const * const fileName = 0, int const lineNumber = 0 )
      : message { exceptionMessage }{
      if( fileName != 0 )
    std::cerr << "IPO exception in " << fileName << ":" << lineNumber
          << " " << exceptionMessage << std::endl;
    }
    const std::string &what() const {
      return message;
    }
  private:
    const std::string message;
  };
  
}

#endif