/*
* errcode.h: internal interface for error reporting
*
* Copyright (C) 2009-2016 David Lutterkort
*
* 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
*
* Author: David Lutterkort <lutter@redhat.com>
*/
#ifndef ERRCODE_H_
#define ERRCODE_H_
#include "internal.h"
/* Include augeas.h for the error codes */
#include "augeas.h"
/*
* Error details in a separate struct that we can pass around
*/
struct error {
aug_errcode_t code;
int minor;
char *details; /* Human readable explanation */
const char *minor_details; /* Human readable version of MINOR */
/* A dummy info of last resort; this can be used in places where
* a struct info is needed but none available
*/
struct info *info;
/* Bit of a kludge to get at struct augeas, but since struct error
* is now available in a lot of places (through struct info), this
* gives a convenient way to get at the overall state
*/
const struct augeas *aug;
/* A preallocated exception so that we can throw something, even
* under OOM conditions
*/
struct value *exn;
};
void report_error(struct error *err, aug_errcode_t errcode,
const char *format, ...)
ATTRIBUTE_FORMAT(printf, 3, 4);
void bug_on(struct error *err, const char *srcfile, int srclineno,
const char *format, ...)
ATTRIBUTE_FORMAT(printf, 4, 5);
void reset_error(struct error *err);
#define HAS_ERR(obj) ((obj)->error->code != AUG_NOERROR)
#define ERR_BAIL(obj) if ((obj)->error->code != AUG_NOERROR) goto error;
#define ERR_RET(obj) if ((obj)->error->code != AUG_NOERROR) return;
#define ERR_NOMEM(cond, obj) \
if (cond) { \
report_error((obj)->error, AUG_ENOMEM, NULL); \
goto error; \
}
#define ERR_REPORT(obj, code, fmt ...) \
report_error((obj)->error, code, ## fmt)
#define ERR_THROW(cond, obj, code, fmt ...) \
do { \
if (cond) { \
report_error((obj)->error, code, ## fmt); \
goto error; \
} \
} while(0)
#define ARG_CHECK(cond, obj, fmt ...) \
do { \
if (cond) { \
report_error((obj)->error, AUG_EBADARG, ## fmt); \
goto error; \
} \
} while(0)
/* Assertions that use our error reporting infrastructure instead of
* aborting
*/
#define ensure(cond, obj) \
if (!(cond)) { \
bug_on((obj)->error, __FILE__, __LINE__, NULL); \
goto error; \
}
#define ensure0(cond, obj) \
if (!(cond)) { \
bug_on((obj)->error, __FILE__, __LINE__, NULL); \
return NULL; \
}
#define BUG_ON(cond, obj, fmt ...) \
if (cond) { \
bug_on((obj)->error, __FILE__, __LINE__, ## fmt); \
goto error; \
}
#endif
/*
* Local variables:
* indent-tabs-mode: nil
* c-indent-level: 4
* c-basic-offset: 4
* tab-width: 4
* End:
*/