(*
    ||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 U = NUri
module L = Log
module Y = Entity
module B = Brg
module E = BrgEnvironment
module R = BrgReduction
module T = BrgType

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

(* to share *)
let type_check err f ?(si=false) g = function
   | a, uri, Y.Abst t ->
      let f xt tt = 
         let e = E.set_entity (a, uri, Y.Abst xt) in f tt e
      in
      let st = Y.initial_status si in
      L.loc := U.string_of_uri uri; T.type_of err f st g R.empty_kam t
   | a, uri, Y.Abbr t ->
      let f xt tt = 
         let e = E.set_entity (a, uri, Y.Abbr xt) in f tt e
      in
      let st = Y.initial_status si in
      L.loc := U.string_of_uri uri; T.type_of err f st g R.empty_kam t
   | _, _, Y.Void     -> assert false