Body macro can’t be attached to variables

[ahoppen]

The function body macro proposal states:

When using the shorthand syntax for get-only properties, a function body macro can be applied to the property itself:

But the following does not compile

@stringify // error: 'body' macro cannot be attached to var ('x')
var x: Int { 2 }

With stringify being a function body macro.

Attaching a function body macro to a getter also doesn’t work:

var x: Int {
  @stringify get { 1 } // error: Declaration is not a type with an optional code block
}

rdar://130739935

MyMacro.zip

[joshuawright11]

Anything I could do to help get this across the finish line? I've got a library in mind that would use this and I'm eager to try it 😊

[ahoppen]

This would need to be implemented in the compiler. If you want to give it a shot, that would be great!

[joshuawright11]

I'll take a look - any pointers? Also - just to triple check before hacking on it; this functionally is supposed to exist, correct? I didn't just misread the proposal?

[joshuawright11]

Any updates or plans to add this?