(***********************************************************************)
(*                                                                     *)
(*                                OCaml                                *)
(*                                                                     *)
(*            Xavier Leroy, projet Cristal, INRIA Rocquencourt         *)
(*                                                                     *)
(*  Copyright 1996 Institut National de Recherche en Informatique et   *)
(*  en Automatique.  All rights reserved.  This file is distributed    *)
(*  under the terms of the Q Public License version 1.0.               *)
(*                                                                     *)
(***********************************************************************)

(* Access paths *)

type t =
    Pident of Ident.t
  | Pdot of t * string * int
  | Papply of t * t

val same: t -> t -> bool
val isfree: Ident.t -> t -> bool
val binding_time: t -> int

val nopos: int

val name: ?paren:(string -> bool) -> t -> string
    (* [paren] tells whether a path suffix needs parentheses *)
val head: t -> Ident.t

val heads: t -> Ident.t list

val last: t -> string

type typath =
  | Regular of t
  | Ext of t * string
  | LocalExt of Ident.t
  | Cstr of t * string

val constructor_typath: t -> typath
val is_constructor_typath: t -> bool