A Possible Vision for Macros in Swift

[mackoj (Jeffrey Macko)]

This is great!

Thanks for sharing your vision about this subject. I was pleasantly surprised about its depth.

After reading it the first thing that comes to mind is the lack of function support as ktoso mentioned here.

@ktoso

• functionDeclaration: A macro that can be used on a function declaration and replace the function definition. As with a conformance macro, a member declaration macro would probably want access to the stored properties of the enclosing type, and potentially other information. As an example, let's create a macro to synthesize a memberwise initializer:

The way ktoso propose to do it would allow doing (Compile time support for Aspect-oriented programming, Prepitch: function wrappers, [Proposal/Pitch] Function decorators) pretty easily.

This would be nice to have.