My variant of Assertion macros

gistfile1.c

#if !defined(NS_BLOCK_ASSERTIONS)

#define MTKAssert(CONDITION, MESSAGE, ...)\
if ( ! (CONDITION) && (( [[NSAssertionHandler currentHandler] handleFailureInFunction:[NSString stringWithUTF8String:__PRETTY_FUNCTION__] file:[NSString stringWithUTF8String:__FILE__] lineNumber:__LINE__ description:MESSAGE, ##__VA_ARGS__], YES)) )

#else

#define MTKAssert(CONDITION, MESSAGE, ...)\
if ( ! (CONDITION) && (( NSLog(@"*** Assertion failure in %s, %s:%d, Condition not satisfied: %s, reason: '" MESSAGE "'", __PRETTY_FUNCTION__, __FILE__, __LINE__, #CONDITION, ##__VA_ARGS__), YES)) )

#endif

#define MTKAssertReturn(CONDITION, MESSAGE, ...)        ESSAssert(CONDITION, MESSAGE, ##__VA_ARGS__) return
#define MTKAssertReturnNil(CONDITION, MESSAGE, ...)     ESSAssert(CONDITION, MESSAGE, ##__VA_ARGS__) return nil
#define MTKAssertException(CONDITION, MESSAGE, ...)     ESSAssert(CONDITION, MESSAGE, ##__VA_ARGS__) @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:[NSString stringWithFormat:@"*** Assertion failure in %s, %s:%d, Condition not satisfied: %s, reason: '" MESSAGE "'", __PRETTY_FUNCTION__, __FILE__, __LINE__, #CONDITION, ##__VA_ARGS__] userInfo:nil]

gistfile2.m

// Normal usage.
// DEBUG: Throw assetion exception (just like NSAssert).
// RELEASE: Log message.

MTKAssert(result != nil, @"Message");



// Use with conditioned "safety" code.
// DEBUG: Throw assetion exception (just like NSAssert).
// RELEASE: Log message and execute the following code.
// (Important: In the first example, the ";" (semicolon) was the additional code to execute on RELEASE.)

MTKAssert(result != nil, @"Message") {
    result = placeholder;
}



// Convenience. Calls "return;" if condition is not met.
MTKAssertReturn(result != nil, @"Message");



// Convenience. Calls "return nil;" if condition is not met.
MTKAssertReturnNil(result != nil, @"Message");



// Convenience. Throws exception even on RELEASE.
MTKAssertException(result != nil, @"Message");