/*      $NetBSD: assertions.c,v 1.1.1.2 2012/09/09 16:08:00 christos Exp $      */

/*
* Copyright (C) 2004, 2005, 2008  Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1997, 1999, 2001  Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/

#if !defined(LINT) && !defined(CODECENTER)
static const char rcsid[] = "Id: assertions.c,v 1.5 2008/11/14 02:36:51 marka Exp ";
#endif

#include "port_before.h"

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <isc/assertions.h>

#include "port_after.h"

/*
* Forward.
*/

static void default_assertion_failed(const char *, int, assertion_type,
                                    const char *, int);

/*
* Public.
*/

assertion_failure_callback __assertion_failed = default_assertion_failed;

void
set_assertion_failure_callback(assertion_failure_callback f) {
       if (f == NULL)
               __assertion_failed = default_assertion_failed;
       else
               __assertion_failed = f;
}

const char *
assertion_type_to_text(assertion_type type) {
       const char *result;

       switch (type) {
       case assert_require:
               result = "REQUIRE";
               break;
       case assert_ensure:
               result = "ENSURE";
               break;
       case assert_insist:
               result = "INSIST";
               break;
       case assert_invariant:
               result = "INVARIANT";
               break;
       default:
               result = NULL;
       }
       return (result);
}

/*
* Private.
*/

/* coverity[+kill] */
static void
default_assertion_failed(const char *file, int line, assertion_type type,
                        const char *cond, int print_errno)
{
       fprintf(stderr, "%s:%d: %s(%s)%s%s failed.\n",
               file, line, assertion_type_to_text(type), cond,
               (print_errno) ? ": " : "",
               (print_errno) ? strerror(errno) : "");
       abort();
       /* NOTREACHED */
}

/*! \file */