Using UFUNCTION within a macro

Development Programming & Scripting
1

I have a bit of code that looks like

#define QUEST_WRAPPER_PARAM_DEF(RETURN_TYPE,FUNCTION, ...) \
UFUNCTION(BlueprintCallable, Category = "Quest System", meta = (DisplayName = #FUNCTION ))\
static RETURN_TYPE Receive##FUNCTION(UObject* WorldContextObject,__VA_ARGS__);\
RETURN_TYPE FUNCTION(__VA_ARGS__);

And it compiles fine but the UFUCTION markup seems to not work : /

2

it really doesn’t like this

UFUNCTION(BlueprintCallable, Category = "Quest System", meta = (DisplayName = HorDor))
QUEST_WRAPPER_PARAM_DEF(void,HorDor)

welp that’s no fun.

3

Unless someone else says otherwise, UNFUNCTION wouldn’t be compatible with a Macro because, there’s no function to reference! When you use a macro, it just injects that code, at compile time, where you call it. So there’d be no function address or anything.

4

It also seems like the markup is applied before the macros are expanded so you can’t even take UFUNCTION out of the macro and have it work. As a lispy programmer this makes me sad.