CASCatch_ErrorHandler.hxx

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// Copyright (C) 2007-2025  CEA, EDF, OPEN CASCADE
//
// Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// 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, 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
// 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
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
 
// File   : CASCatch_ErrorHandler.hxx
// Author : Sergey RUIN, Open CASCADE S.A.S (sergey.ruin@opencascade.com)
//
#ifndef CASCATCH_ERRORHANDLER_HXX
#define CASCATCH_ERRORHANDLER_HXX
 
#include "CASCatch_Failure.hxx"
 
#include <stdlib.h>
#include <setjmp.h>
 
 
extern int K_SETJMP_CASCatch ;
 
class CASCatch_ErrorHandler 
{
  friend class  CASCatch_Failure;     // To execute the raise exception.
 
 public:
 
 Standard_EXPORT CASCatch_ErrorHandler();
 Standard_EXPORT ~CASCatch_ErrorHandler();
 Standard_EXPORT Standard_Boolean Catches (const Handle(Standard_Type)&);
 
 private:
  Standard_EXPORT static  void Abort();
  Standard_EXPORT static  void Error(const Handle(CASCatch_Failure)&);
  Standard_EXPORT static  Handle(CASCatch_Failure)  LastCaughtError();
 
 //==== The fields ===========================================================
 private:
           CASCatch_ErrorHandler*   Previous;
           Handle(CASCatch_Failure) CaughtError;
 
 public:
  jmp_buf      Label;
 
};
 
#undef CASCatch_TRY
#define CASCatch_TRY try
 
#undef CASCatch_CATCH
#define CASCatch_CATCH catch
 
 
#ifdef NO_CXX_EXCEPTION
# undef CASCatch_TRY
# undef CASCatch_CATCH
 
# if defined(DO_ABORT)
  
#  define DoesNotAbort_CASCatch(aHandler) !(K_SETJMP_CASCatch = setjmp(aHandler.Label))
 
#  define CASCatch_TRY        CASCatch_ErrorHandler _Function; \
                                K_SETJMP_CASCatch = 1 ; \
                                if(DoesNotAbort_CASCatch(_Function))
 
# else  // ! DO_ABORT
#  define DoesNotAbort_CASCatch(aHandler) !setjmp(aHandler.Label)
 
#  define CASCatch_TRY      CASCatch_ErrorHandler _Function; \
                              if(DoesNotAbort_CASCatch(_Function))
# endif // DO_ABORT
 
 
# define CASCatch_CATCH(Error)   else if(_Function.Catches(STANDARD_TYPE(Error)))
#endif  // NO_CXX_EXCEPTION
 
#endif  // CASCATCH_ERRORHANDLER_HXX