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/* $Header: /pjproject-0.3/pjlib/include/pj/assert.h 4 10/14/05 12:25a Bennylp $ */
#ifndef __PJ_ASSERT_H__
#define __PJ_ASSERT_H__
/**
* @file assert.h
* @brief Assertion macro pj_assert().
*/
#include <pj/config.h>
#include <pj/compat/assert.h>
/**
* @defgroup pj_assert Assertion Macro
* @ingroup PJ_MISC
* @{
*
* Assertion and other helper macros for sanity checking.
*/
/**
* @hideinitializer
* Check during debug build that an expression is true. If the expression
* computes to false during run-time, then the program will stop at the
* offending statements.
* For release build, this macro will not do anything.
*
* @param expr The expression to be evaluated.
*/
#define pj_assert(expr) assert(expr)
/**
* @hideinitializer
* If #PJ_ENABLE_EXTRA_CHECK is declared and non-zero, then
* #PJ_ASSERT_RETURN macro will evaluate the expression in @a expr during
* run-time. If the expression yields false, assertion will be triggered
* and the current function will return with the specified return value.
*
* If #PJ_ENABLE_EXTRA_CHECK is not declared or is zero, then no run-time
* checking will be performed. The macro simply evaluates to pj_assert(expr).
*/
#if defined(PJ_ENABLE_EXTRA_CHECK) && PJ_ENABLE_EXTRA_CHECK != 0
# define PJ_ASSERT_RETURN(expr,retval) \
do { \
pj_assert(expr); \
if (!(expr)) return retval; \
} while (0)
#else
# define PJ_ASSERT_RETURN(expr,retval) pj_assert(expr)
#endif
/** @} */
#endif /* __PJ_ASSERT_H__ */
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