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_______________________________________________________________ *)
19 let rec list_iter map l out tab = match l with
21 | hd :: tl -> map hd out tab; list_iter map tl out tab
23 let list_rev_iter map e ns l out tab =
24 let rec aux err f e = function
26 | n :: ns, hd :: tl ->
27 let f e = map e hd out tab; f (D.push2 C.err C.start e n ~t:hd) in
31 ignore (aux C.err C.start e (ns, l))
33 let lenv_iter map1 map2 l out tab =
34 let rec aux f = function
36 | D.EBind (lenv, a, b) -> aux (fun () -> map1 a b out tab; f ()) lenv
37 | D.EProj (lenv, a, e) -> aux (fun () -> map2 a e out tab; f ()) lenv
41 let rec exp_term e t out tab = match t with
45 let f s = Y.Name (s, true) :: a in
48 let attrs = [X.position l; X.name a] in
49 X.tag X.sort attrs out tab
50 | D.TLRef (a, i, j) ->
53 let f n r = Y.Name (n, r) :: a in
54 D.get_name err f i j e
56 let attrs = [X.position i; X.offset j; X.name a] in
57 X.tag X.lref attrs out tab
59 let a = Y.Name (U.name_of_uri n, true) :: a in
60 let attrs = [X.uri n; X.name a] in
61 X.tag X.gref attrs out tab
62 | D.TCast (a, u, t) ->
64 X.tag X.cast attrs ~contents:(exp_term e u) out tab;
66 | D.TAppl (a, vs, t) ->
67 let attrs = [X.arity (List.length vs)] in
68 X.tag X.appl attrs ~contents:(list_iter (exp_term e) vs) out tab;
70 | D.TProj (a, lenv, t) ->
72 X.tag X.proj attrs ~contents:(lenv_iter (exp_bind e) (exp_eproj e) lenv) out tab;
73 exp_term (D.push_proj C.start e a lenv) t out tab
74 | D.TBind (a, b, t) ->
75 exp_bind e a b out tab;
76 exp_term (D.push_bind C.start e a b) t out tab
78 and exp_bind e a b out tab =
80 let a, ns = Y.get_names f a in
83 let e = D.push_bind C.start e a (D.Abst []) in
84 let attrs = [X.name ns; X.mark a; X.arity (List.length ws)] in
85 X.tag X.abst attrs ~contents:(list_rev_iter exp_term e ns ws) out tab
87 let e = D.push_bind C.start e a (D.Abbr []) in
88 let attrs = [X.name ns; X.mark a; X.arity (List.length vs)] in
89 X.tag X.abbr attrs ~contents:(list_rev_iter exp_term e ns vs) out tab
91 let attrs = [X.name a; X.mark a; X.arity n] in
92 X.tag X.void attrs out tab
94 and exp_eproj e a lenv out tab =
96 X.tag X.proj attrs ~contents:(lenv_iter (exp_bind e) (exp_eproj e) lenv) out tab
98 let export_term = exp_term D.empty_lenv