| Cic.ASort (id,Cic.Type u) -> idref id (Ast.Sort (`Type u))
| Cic.ASort (id,Cic.CProp u) -> idref id (Ast.Sort (`CProp u))
| Cic.AImplicit (id, Some `Hole) -> idref id Ast.UserInput
| Cic.ASort (id,Cic.Type u) -> idref id (Ast.Sort (`Type u))
| Cic.ASort (id,Cic.CProp u) -> idref id (Ast.Sort (`CProp u))
| Cic.AImplicit (id, Some `Hole) -> idref id Ast.UserInput
| Cic.AProd (id,n,s,t) ->
let binder_kind =
match sort_of_id id with
| Cic.AProd (id,n,s,t) ->
let binder_kind =
match sort_of_id id with