exception.hpp

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/*
 * $Id: exception.hpp 247 2012-08-12 11:22:22Z jdl3 $
 * Copyright (C) 2010, 2020 John D Lamb
 * Enum copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Gerard Jungman, Brian Gough
 *
 * 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 CCGSL_EXCEPTION_HPP
#define CCGSL_EXCEPTION_HPP
#include<iostream>
#include<iso646.h>
#include<gsl/gsl_errno.h>
 
namespace gsl {
  class exception {
  public:
    exception( char const* reason, char const* file, int line, int gsl_errno )
      : reason( reason ), file( file ), line( line ), gsl_errno( gsl_errno ){
      if( file != 0 ) std::clog << file << ":";
      if( line != 0 ) std::clog << line << ": ";
      std::clog << "gsl::exception: ";
      char const* message = strerror();
      if( message != 0 )
    std::clog << message; // << ": ";
      else
    std::clog << "undefined error: ";
      if( reason != 0 )
    std::clog << ": " << reason;
      std::clog << std::endl;
    }  
    char const* get_reason() const { return reason; }
    char const* get_file() const { return file; }
    int get_line() const { return line; }
    int get_gsl_errno() const { return gsl_errno; }
    char const* strerror() const { return gsl_strerror( gsl_errno ); }
  public:
    static void (*set_handler( void (*handler)( char const*, char const*, int, int )))
    ( char const*, char const*, int, int ){ return gsl_set_error_handler( handler ); }
    static void enable(){ set_handler_gsl_exceptions(); }
    static void (*set_handler_gsl_exceptions())( char const*, char const*, int, int ){
      return gsl_set_error_handler( handler_gsl_exceptions ); }
    static void (*set_handler_off())( char const*, char const*, int, int ){
      return gsl_set_error_handler( handler_off ); }
    enum { 
      GSL_SUCCESS  = 0, 
      GSL_FAILURE  = -1,
      GSL_CONTINUE = -2,  
      GSL_EDOM     = 1,   
      GSL_ERANGE   = 2,   
      GSL_EFAULT   = 3,   
      GSL_EINVAL   = 4,   
      GSL_EFAILED  = 5,   
      GSL_EFACTOR  = 6,   
      GSL_ESANITY  = 7,   
      GSL_ENOMEM   = 8,   
      GSL_EBADFUNC = 9,   
      GSL_ERUNAWAY = 10,  
      GSL_EMAXITER = 11,  
      GSL_EZERODIV = 12,  
      GSL_EBADTOL  = 13,  
      GSL_ETOL     = 14,  
      GSL_EUNDRFLW = 15,  
      GSL_EOVRFLW  = 16,  
      GSL_ELOSS    = 17,  
      GSL_EROUND   = 18,  
      GSL_EBADLEN  = 19,  
      GSL_ENOTSQR  = 20,  
      GSL_ESING    = 21,  
      GSL_EDIVERGE = 22,  
      GSL_EUNSUP   = 23,  
      GSL_EUNIMPL  = 24,  
      GSL_ECACHE   = 25,  
      GSL_ETABLE   = 26,  
      GSL_ENOPROG  = 27,  
      GSL_ENOPROGJ = 28,  
      GSL_ETOLF    = 29,  
      GSL_ETOLX    = 30,  
      GSL_ETOLG    = 31,  
      GSL_EOF      = 32   
    };
  private:
    static void handler_gsl_exceptions( char const* reason, char const* file, int line, int gsl_errno ){
      throw exception( reason, file, line, gsl_errno ); }
    static void handler_off( char const*, char const*, int, int ){ /* Do nothing */ }
  private:
    char const* reason;
    char const* file;
    int const line;
    int const gsl_errno;
  };
  
}
 
#endif