Complete type name as local name in pattern position

[Veykril]

struct Directory {}
let $0 = Directory {};

I feel like proposing directory would be quite helpful at times.

That is, when completing a (top level) pattern binding and the corresponding type is an ADT (after stripping references), we should propose a lower snake cased version ADTs name.

[roife]

@rustbot claim

[roife]

Should we complete within the match arms? Although it seems a bit odd for me (i.e. suggesting enum1 here):

enum Enum1 { A, B }
let e: Enum1;
match e {
  $0
}

[Veykril]

I'd say let statements and params make the most sense for this

[roife]

We can reuse ide_assist::utils::suggest_name. Would it be ok if I move it to the hir crate so that all ide-xxx crates can use it?

[Veykril]

you can move it into ide-db which all of them access