ast_typ_uncurry.mli

(* Copyright (C) 2020 Authors of ReScript
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 * it under the terms of the GNU Lesser General Public License as published by
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 * LGPL version 3 (or the corresponding section of a later version of the LGPL
 * should you choose to use a later version).
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(* Note that currently there is no way to consume [Js.meth_callback]
    so it is fine to encode it with a freedom,
    but we need make it better for error message.
   - all are encoded as
   {[
     type fn =  (`Args_n of _ , 'result ) Js.fn
     type method = (`Args_n of _, 'result) Js.method
     type method_callback = (`Args_n of _, 'result) Js.method_callback
   ]}
    For [method_callback], the arity is never zero, so both [method]
    and  [fn] requires (unit -> 'a) to encode arity zero
*)

type typ = Parsetree.core_type

type 'a cxt = Ast_helper.loc -> Bs_ast_mapper.mapper -> 'a

type uncurry_type_gen =
  (Asttypes.arg_label ->
  (* label for error checking *)
  typ ->
  (* First arg *)
  typ ->
  (* Tail *)
  typ)
  cxt

val to_uncurry_type : uncurry_type_gen
(** syntax : 
    {[ int -> int -> int [@bs]]}
*)

val to_method_callback_type : uncurry_type_gen
(** syntax:
    {[ 'obj -> int -> int [@this] ]}
*)