exception.in.h

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/*
    libparted - a library for manipulating disk partitions
    Copyright (C) 1999-2000, 2007, 2009-2014, 2019-2023 Free Software
    Foundation, Inc.
 
    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 3 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, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef PED_EXCEPTION_H_INCLUDED
#define PED_EXCEPTION_H_INCLUDED
 
typedef struct _PedException PedException;
 
enum _PedExceptionType {
        PED_EXCEPTION_INFORMATION=1,
        PED_EXCEPTION_WARNING=2,
        PED_EXCEPTION_ERROR=3,
        PED_EXCEPTION_FATAL=4,
        PED_EXCEPTION_BUG=5,
        PED_EXCEPTION_NO_FEATURE=6,
};
typedef enum _PedExceptionType PedExceptionType;
 
enum _PedExceptionOption {
        /* individual options */
        PED_EXCEPTION_UNHANDLED=0,
        PED_EXCEPTION_FIX=1,
        PED_EXCEPTION_YES=2,
        PED_EXCEPTION_NO=4,
        PED_EXCEPTION_OK=8,
        PED_EXCEPTION_RETRY=16,
        PED_EXCEPTION_IGNORE=32,
        PED_EXCEPTION_CANCEL=64,
 
        /* combinations of individual options */
        PED_EXCEPTION_OK_CANCEL = PED_EXCEPTION_OK + PED_EXCEPTION_CANCEL,
        PED_EXCEPTION_YES_NO = PED_EXCEPTION_YES + PED_EXCEPTION_NO,
        PED_EXCEPTION_YES_NO_CANCEL =
                PED_EXCEPTION_YES_NO + PED_EXCEPTION_CANCEL,
        PED_EXCEPTION_IGNORE_CANCEL =
                PED_EXCEPTION_IGNORE + PED_EXCEPTION_CANCEL,
        PED_EXCEPTION_RETRY_CANCEL = PED_EXCEPTION_RETRY + PED_EXCEPTION_CANCEL,
        PED_EXCEPTION_RETRY_IGNORE_CANCEL =
                PED_EXCEPTION_RETRY + PED_EXCEPTION_IGNORE_CANCEL,
};
 
#define PED_EXCEPTION_OPTION_FIRST PED_EXCEPTION_FIX
#define PED_EXCEPTION_OPTION_LAST PED_EXCEPTION_CANCEL  /* last individual option */
 
typedef enum _PedExceptionOption PedExceptionOption;
 
struct _PedException {
        char*                   message;        
        PedExceptionType        type;           
        PedExceptionOption      options;        
};
 
typedef PedExceptionOption (PedExceptionHandler) (PedException* ex);
 
extern int ped_exception;       /* set to true if there's an exception */
 
extern char* ped_exception_get_type_string (PedExceptionType ex_type)
     _GL_ATTRIBUTE_CONST;
extern char* ped_exception_get_option_string (PedExceptionOption ex_opt)
     _GL_ATTRIBUTE_PURE;
 
extern void ped_exception_set_handler (PedExceptionHandler* handler);
extern PedExceptionHandler *ped_exception_get_handler(void)
     _GL_ATTRIBUTE_PURE;
 
extern PedExceptionOption ped_exception_default_handler (PedException* ex);
 
extern PedExceptionOption       ped_exception_throw (PedExceptionType ex_type,
                                                     PedExceptionOption ex_opt,
                                                     const char* message,
                                                     ...);
/* rethrows an exception - i.e. calls the exception handler, (or returns a
   code to return to pass up higher) */
extern PedExceptionOption       ped_exception_rethrow ();
 
/* frees an exception, indicating that the exception has been handled.
   Calling an exception handler counts. */
extern void                     ped_exception_catch ();
 
/* indicate that exceptions should not go to the exception handler, but passed
   up to the calling function(s) */
extern void                     ped_exception_fetch_all ();
 
/* indicate that exceptions should invoke the exception handler */
extern void                     ped_exception_leave_all ();
 
#endif /* PED_EXCEPTION_H_INCLUDED */