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gul_error.h

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/* LIBGUL - Geometry Utility Library
 * Copyright (C) 1998-1999 Norbert Irmer
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library 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 GUL_ERROR_H
#define GUL_ERROR_H

namespace gul {

class Error
{
public:
  virtual int number() { return(1); }
  virtual const char *descr() { return("General error\n"); }
};

class AllocError : public Error
{
public:
  virtual int number() { return(2); }
  virtual const char *descr() { return("Alloc error\n"); }
};

class PoolAllocError : public Error
{
public:
  virtual int number() { return(3); }
  virtual const char *descr() { return("PoolAlloc error\n"); }
};

class InternalError : public Error
{
public:
  virtual int number() { return(4); }
  virtual const char *descr() 
  { return("Internal error - please contact authors\n"); }
};

class IntervalDivZeroError : public Error
{
public:
  virtual int number() { return(5); }
  virtual const char *descr() 
  { return("Division by neighborhood of 0 interval\n"); }
};

class SingularMatrixError : public Error
{
public:
  virtual int number() { return(6); }
  virtual const char *descr() 
  { return("Singular matrix encountered\n"); }
};


template < class X, class A > 
inline void Assert( A assertion )
{
 if(!assertion) throw X();
}


}
 
#endif

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