(*
    ||M||  This file is part of HELM, an Hypertextual, Electronic        
    ||A||  Library of Mathematics, developed at the Computer Science     
    ||T||  Department, University of Bologna, Italy.                     
    ||I||                                                                
    ||T||  HELM is free software; you can redistribute it and/or         
    ||A||  modify it under the terms of the GNU General Public License   
    \   /  version 2 or (at your option) any later version.              
     \ /   This software is distributed as is, NO WARRANTY.              
      V_______________________________________________________________ *)

module B = Brg
module E = BrgEnvironment
module T = BrgType

(* Interface functions ******************************************************)

let type_check f g = function
   | None                           -> f None
   | Some ((_, _, B.Abst t) as obj)
   | Some ((_, _, B.Abbr t) as obj) ->
       let f tt obj = f (Some (tt, obj)) in
       let f tt = E.set_obj (f tt) obj in
       T.type_of f g B.empty_context t
   | Some (_, _, B.Void)            -> assert false