Question

I’d like to use an assert macro that wraps both NSAssert for ObjC methods, and plain assert (or something else) inside of C functions.

Is there a clean way to detect at runtime (or better yet, compile time!) that I’m currently executing inside an ObjC method?

I know that self and _cmd will be defined and valid within a method, but I’m not sure if there’s an obvious way to safely check for the existence of a local variable. Am I forgetting something obvious?

Answer 1

Maybe you can use the standard predefined macro to test if the file is compiled by an objective-c compiler.

//in the header file
#define MyAssert(A) NSAssert(A) assert(A)

//in the C file
#if !defined(__OBJC__)
#define NSAssert(A) 

//in the Obj-C file
#if defined(__OBJC__)
#define assert(A) 


/**/
f()
{
//...
MyAssert(TestCase && "Error Message");
//...
}