2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
16 module BE = BrgEnvironment
17 module BR = BrgReduction
19 module BV = BrgValidity
21 (* Interface functions ******************************************************)
24 let type_check err f st = function
25 | a, uri, E.Abst (n, t) ->
27 let e = BE.set_entity (a, uri, E.Abst (n, xt)) in f tt e
29 L.loc := U.string_of_uri uri; BT.type_of err f st BR.empty_kam t
32 let xt = match xt with
34 | _ -> B.Cast ([], tt, xt)
36 let e = BE.set_entity (a, uri, E.Abbr xt) in f tt e
38 L.loc := U.string_of_uri uri; BT.type_of err f st BR.empty_kam t
39 | _, _, E.Void -> assert false
41 let validate err f st e =
42 let uri, t = match e with
43 | _, uri, E.Abst (_, t) -> uri, t
44 | _, uri, E.Abbr t -> uri, t
45 | _, _, E.Void -> assert false
47 let f () = let _ = BE.set_entity e in f () in
48 L.loc := U.string_of_uri uri; BV.validate err f st BR.empty_kam t