[Macros] Accessing the "parent context" of a syntax node passed to a macro

[Douglas_Gregor]

@erneestoc

Would this work for what I'm asking here?

I'm willing to put the effort. I'd love to have a tool like mockingbird or swiftymocky but without needing a separate codegen tool. On the example above, if protocol inherited from other protocol, would we have a way to check the members of the protocol is inheriting from?

No, it does not. It's only providing syntactic / lexical information, so you get the enclosing parent syntax, but you can't "reach across" to other nodes to ask questions about them.

Doug