(*
    InFormal Digital Logic Verification Environment
    Copyright (C) 2004 Tom Hawkins (tomahawkins@yahoo.com)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*)

(** PSL Abstract Syntax Tree *)

(** Location type. *)
type location = string * int * int;;

(** Token type for lexer/parser. *)
type token = string * location;;

(* Abstract Syntax Tree*)
type spec = vunit list

and vunit = string * vunit_item list (* module, items *)

and vunit_item = Assert of location * expression * string

and expression = Ltl.ltl

;;

