/*	$NetBSD: assertions.h,v 1.2 2001/01/27 07:22:02 itojun Exp $	*/

/*
 * Copyright (c) 1997-1999 by Internet Software Consortium.
 *
 * Permission to use, copy, modify, and 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 * CONSORTIUM 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.
 */

/*
 * Id: assertions.h,v 8.3 2000/07/17 07:53:59 vixie Exp
 */

#ifndef ASSERTIONS_H
#define ASSERTIONS_H		1

typedef enum {
	assert_require, assert_ensure, assert_insist, assert_invariant
} assertion_type;

typedef void (*assertion_failure_callback)(char *, int, assertion_type, char *,
					   int);

extern assertion_failure_callback __assertion_failed;
void set_assertion_failure_callback(assertion_failure_callback f);
char *assertion_type_to_text(assertion_type type);

#ifdef CHECK_ALL
#define CHECK_REQUIRE		1
#define CHECK_ENSURE		1
#define CHECK_INSIST		1
#define CHECK_INVARIANT		1
#endif

#ifdef CHECK_NONE
#define CHECK_REQUIRE		0
#define CHECK_ENSURE		0
#define CHECK_INSIST		0
#define CHECK_INVARIANT		0
#endif

#ifndef CHECK_REQUIRE
#define CHECK_REQUIRE		1
#endif

#ifndef CHECK_ENSURE
#define CHECK_ENSURE		1
#endif

#ifndef CHECK_INSIST
#define CHECK_INSIST		1
#endif

#ifndef CHECK_INVARIANT
#define CHECK_INVARIANT		1
#endif

#if CHECK_REQUIRE != 0
#define REQUIRE(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_require, \
				       #cond, 0), 0)))
#define REQUIRE_ERR(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_require, \
				       #cond, 1), 0)))
#else
#define REQUIRE(cond)		((void) (cond))
#define REQUIRE_ERR(cond)	((void) (cond))
#endif /* CHECK_REQUIRE */

#if CHECK_ENSURE != 0
#define ENSURE(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_ensure, \
				       #cond, 0), 0)))
#define ENSURE_ERR(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_ensure, \
				       #cond, 1), 0)))
#else
#define ENSURE(cond)		((void) (cond))
#define ENSURE_ERR(cond)	((void) (cond))
#endif /* CHECK_ENSURE */

#if CHECK_INSIST != 0
#define INSIST(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_insist, \
				       #cond, 0), 0)))
#define INSIST_ERR(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_insist, \
				       #cond, 1), 0)))
#else
#define INSIST(cond)		((void) (cond))
#define INSIST_ERR(cond)	((void) (cond))
#endif /* CHECK_INSIST */

#if CHECK_INVARIANT != 0
#define INVARIANT(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_invariant, \
				       #cond, 0), 0)))
#define INVARIANT_ERR(cond) \
	((void) ((cond) || \
		 ((__assertion_failed)(__FILE__, __LINE__, assert_invariant, \
				       #cond, 1), 0)))
#else
#define INVARIANT(cond)		((void) (cond))
#define INVARIANT_ERR(cond)	((void) (cond))
#endif /* CHECK_INVARIANT */

#endif /* ASSERTIONS_H */