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
23 let l, _, _ = List.nth c i in
25 | M.GRef (_, uri, vs) ->
26 let map f t v = f (B.appl v t) in
27 let f vs = C.list_fold_left f map (B.GRef uri) vs in
28 C.list_map f (xlate_term c) vs
30 let f v t = f (B.Appl (v, t)) in
31 let f v = xlate_term c (f v) t in
33 | M.Abst (id, w, t) ->
35 let l = B.new_location () in
36 let f t = f (B.Bind (l, id, B.Abst w, t)) in
37 let f c = xlate_term c f t in
38 B.push "meta" f c l id (B.Abst w)
42 let xlate_pars f pars =
44 let l = B.new_location () in
45 let f w = B.push "meta" f c l id (B.Abst w) in
48 C.list_fold_right f map pars B.empty_lenv
50 let unwind_to_xlate_term f c t =
51 let map f t (l, id, b) = f (B.bind l id b t) in
52 let f t = C.list_fold_left f map t c in
55 let xlate_entry f = function
57 let f c = unwind_to_xlate_term f c u in
60 let f u t = f (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 (* Interface functions ******************************************************)
67 let bag_of_meta = xlate_entry