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 (* Internal functions *******************************************************)
18 let rec xlate_term c f = function
20 let f h = f (B.Sort ([], h)) in
21 if s then f 0 else f 1
24 | M.GRef (_, uri, vs) ->
25 let map f t v = f (B.appl [] v t) in
26 let f vs = C.list_fold_left f map (B.GRef ([], uri)) vs in
27 C.list_map f (xlate_term c) vs
29 let f v t = f (B.Appl ([], v, t)) in
30 let f v = xlate_term c (f v) t in
32 | M.Abst (id, w, t) ->
34 let a = [B.Name (true, id)] in
35 let f t = f (B.Bind (B.abst a w, t)) in
36 let f c = xlate_term c f t in
37 B.push f c (B.abst a w)
41 let xlate_pars f pars =
43 let a = [B.Name (true, id)] in
44 let f w = B.push f c (B.abst a w) in
47 C.list_fold_right f map pars B.empty_lenv
49 let unwind_to_xlate_term f c t =
50 let map f t b = f (B.bind b t) in
51 let f t = B.fold_left f map t c in
54 let xlate_entry f = function
55 | e, pars, uri, u, None ->
56 let f u = f (e, uri, B.abst [] u) in
57 let f c = unwind_to_xlate_term f c u in
59 | e, pars, uri, u, Some (_, t) ->
60 let f u t = f (e, uri, B.abbr [] (B.Cast ([], u, t))) in
61 let f c u = unwind_to_xlate_term (f u) c t in
62 let f c = unwind_to_xlate_term (f c) c u in
65 let xlate_entity f = function
67 | Some e -> let f e = f (Some e) in xlate_entry f e
69 (* Interface functions ******************************************************)
71 let brg_of_meta = xlate_entity