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// ==========================================================================
// $Source: /var/lib/cvs/Givaro/src/kernel/system/giverror.h,v $
// Copyright(c)'1994-2009 by The Givaro group
// This file is part of Givaro.
// Givaro is governed by the CeCILL-B license under French law
// and abiding by the rules of distribution of free software.
// see the COPYRIGHT file for more details.
// Authors: T. Gautier
// $Id: giverror.h,v 1.4 2011-02-02 16:23:56 briceboyer Exp $
// ==========================================================================

/*! @file giverror.h
 * @ingroup system
 * @brief error exception.
 */

#ifndef __GIVARO_error_H
#define __GIVARO_error_H

#include <iostream>
namespace Givaro {
// ------------------------------- GivError
//! Base class for exeception handling in Givaro
class GivError {
public:
  GivError(const char* msg =0 )
  : strg(msg) {};

  virtual ~GivError() ;
  // -- virtual print of the error message
  virtual std::ostream& print( std::ostream& o )  const;

  // -- non virtual output operator
  friend std::ostream& operator<< (std::ostream& o, const GivError& E) ;

  // - useful to setup a break point on it
  static void throw_error( const GivError& err );

protected:
  const char* strg;
};

//! Math error.
class GivMathError : public GivError {
public:
  virtual ~GivMathError() ;

  GivMathError(const char* msg = 0) : GivError(msg) { }
};

//! Exception thrown in input of data structure
class GivBadFormat : public GivError {
public:
  virtual ~GivBadFormat();
  GivBadFormat(const char* msg = 0) : GivError(msg) { }
};

//! Div by 0.
class GivMathDivZero : public GivError {
public:
  virtual ~GivMathDivZero();
  GivMathDivZero(const char* msg = 0) : GivError(msg) { }
};

} // namespace Givaro

#endif // __GIVARO_error_H
// vim:sts=8:sw=8:ts=8:noet:sr:cino=>s,f0,{0,g0,(0,\:0,t0,+0,=s