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/*
* 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 2
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __BLI_ASSERT_H__
#define __BLI_ASSERT_H__
/** \file \ingroup bli
*
* Defines:
* - #BLI_assert
* - #BLI_STATIC_ASSERT
* - #BLI_STATIC_ASSERT_ALIGN
*/
#ifdef __cplusplus
extern "C" {
#endif
#ifndef NDEBUG /* for BLI_assert */
#include <stdio.h>
#endif
/* BLI_assert(), default only to print
* for aborting need to define WITH_ASSERT_ABORT
*/
/* For 'abort' only. */
#include <stdlib.h>
#ifndef NDEBUG
# include "BLI_system.h"
/* _BLI_ASSERT_PRINT_POS */
# if defined(__GNUC__)
# define _BLI_ASSERT_PRINT_POS(a) \
fprintf(stderr, "BLI_assert failed: %s:%d, %s(), at \'%s\'\n", __FILE__, __LINE__, __func__, #a)
# elif defined(_MSC_VER)
# define _BLI_ASSERT_PRINT_POS(a) \
fprintf(stderr, "BLI_assert failed: %s:%d, %s(), at \'%s\'\n", __FILE__, __LINE__, __FUNCTION__, #a)
# else
# define _BLI_ASSERT_PRINT_POS(a) \
fprintf(stderr, "BLI_assert failed: %s:%d, at \'%s\'\n", __FILE__, __LINE__, #a)
# endif
/* _BLI_ASSERT_ABORT */
# ifdef WITH_ASSERT_ABORT
# define _BLI_ASSERT_ABORT abort
# else
# define _BLI_ASSERT_ABORT() (void)0
# endif
/* BLI_assert */
# define BLI_assert(a) \
(void)((!(a)) ? ((BLI_system_backtrace(stderr), _BLI_ASSERT_PRINT_POS(a), _BLI_ASSERT_ABORT(), NULL)) : NULL)
#else
# define BLI_assert(a) ((void)0)
#endif
/* C++ can't use _Static_assert, expects static_assert() but c++0x only,
* Coverity also errors out. */
#if (!defined(__cplusplus)) && \
(!defined(__COVERITY__)) && \
(defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 406)) /* gcc4.6+ only */
# define BLI_STATIC_ASSERT(a, msg) __extension__ _Static_assert(a, msg);
#else
/* Code adapted from http://www.pixelbeat.org/programming/gcc/static_assert.html */
/* Note we need the two concats below because arguments to ## are not expanded, so we need to
* expand __LINE__ with one indirection before doing the actual concatenation. */
# define _BLI_ASSERT_CONCAT_(a, b) a##b
# define _BLI_ASSERT_CONCAT(a, b) _BLI_ASSERT_CONCAT_(a, b)
/* These can't be used after statements in c89. */
# if defined(__COUNTER__) /* MSVC */
# define BLI_STATIC_ASSERT(a, msg) \
; enum { _BLI_ASSERT_CONCAT(static_assert_, __COUNTER__) = 1 / (int)(!!(a)) };
# else /* older gcc, clang... */
/* This can't be used twice on the same line so ensure if using in headers
* that the headers are not included twice (by wrapping in #ifndef...#endif)
* Note it doesn't cause an issue when used on same line of separate modules
* compiled with gcc -combine -fwhole-program. */
# define BLI_STATIC_ASSERT(a, msg) \
; enum { _BLI_ASSERT_CONCAT(assert_line_, __LINE__) = 1 / (int)(!!(a)) };
# endif
#endif
#define BLI_STATIC_ASSERT_ALIGN(st, align) \
BLI_STATIC_ASSERT((sizeof(st) % (align) == 0), "Structure must be strictly aligned")
#ifdef __cplusplus
}
#endif
#endif /* __BLI_ASSERT_H__ */
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