/*
 * The Spar Library - modular math parser
 * Copyright (C) 2000,2001 Davide Angelocola <davide178@inwind.it>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA  02111-1307, USA.
 *
 */

#ifndef _sl_error_h_
#define _sl_error_h_

#include <spar/sl_errno.h>
#include <spar/sl_conf.h>
/**
 * Default messages prefixs
 */
typedef enum sl_error_class
{
  /**
   *  This value means that this error is a parser error, then
   *  a long jump is done in the level0 function to make possible
   *  the error recover. 
   */
  SL_ERROR_CLASS_PARSER,

  /**
   *  This value means a generic error (using an error code)
   *  this error is a significative error, but isn't fatal 
   */
  SL_ERROR_CLASS_ERROR,
  
  /**
   *  This error is fatal. No error recover. The sl_de_init function is 
   *  called before exit. 
   */
  SL_ERROR_CLASS_FATAL,

  /**
   *  This generates only a warning message. Should be ignored, but however 
   *  is included.
   */
  SL_ERROR_CLASS_WARNING
} sl_error_class;
 

__BEGIN_DECLS

/** 
 *  Throws an error condition. It's used heavly by this libraries because  
 *  assuse an high grade of flexiblity. The class variable means the 
 *  function behaviour, whereas, the error variable means the error type.
 *  It can prints also custom error messages, if error variable is equal to
 *  SL_ERROR_CUSTOM.
 */
void sl_error_throw (sl_error_class __class, sl_error __error, const char *__fmt,
		       ...);

__END_DECLS
#endif /* _sl_error_h_ */