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assertions.h

/*	$NetBSD: assertions.h,v 1.2 2008/06/21 20:41:48 christos Exp $	*/

/*
 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
 * 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 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.
 */

/*
 * Id: assertions.h,v 1.3 2005/04/27 04:56:17 sra 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)(const char *, int, assertion_type,
					   const char *, int);

extern assertion_failure_callback __assertion_failed;
void set_assertion_failure_callback(assertion_failure_callback f);
const 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 */
/*! \file */
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