type t =
  1. | Pident of Ident.t
    (*

    Examples: x, List, int

    *)
  2. | Pdot of t * string
    (*

    Examples: List.map, Float.Array

    *)
  3. | Papply of t * t
    (*

    Examples: Set.Make(Int), Map.Make(Set.Make(Int))

    *)
  4. | Pextra_ty of t * extra_ty
    (*

    Pextra_ty (p, extra) are additional paths of types introduced by specific OCaml constructs. See below.

    *)
and extra_ty =
  1. | Pcstr_ty of string
    (*

    Pextra_ty (p, Pcstr_ty c) is the type of the inline record for constructor c inside type p.

    For example, in

    type 'a t = Nil | Cons of {hd : 'a; tl : 'a t}

    The inline record type {hd : 'a; tl : 'a t} cannot be named by the user in the surface syntax, but internally it has the path Pextra_ty (Pident `t`, Pcstr_ty "Cons").

    *)
  2. | Pext_ty
    (*

    Pextra_ty (p, Pext_ty) is the type of the inline record for the extension constructor p.

    For example, in

    type exn += Error of {loc : loc; msg : string}

    The inline record type {loc : loc; msg : string} cannot be named by the user in the surface syntax, but internally it has the path Pextra_ty (Pident `Error`, Pext_ty).

    *)
val same : t -> t -> bool
val compare : t -> t -> int
val compare_extra : extra_ty -> extra_ty -> int
val find_free_opt : Ident.t list -> t -> Ident.t option
val exists_free : Ident.t list -> t -> bool
val scope : t -> int
val flatten : t -> [ `Contains_apply | `Ok of Ident.t * string list ]
val name : ?paren:(string -> bool) -> t -> string
val head : t -> Ident.t
val print : Format.formatter -> t -> unit
val heads : t -> Ident.t list
val last : t -> string
val is_constructor_typath : t -> bool
module Map : Map.S with type key = t
module Set : Set.S with type elt = t