1 (* Copyright (C) 2003-2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
29 module N = CicNotationPt
31 (* functions to be moved ****************************************************)
33 let list_rev_map2 map l1 l2 =
34 let rec aux res = function
35 | hd1 :: tl1, hd2 :: tl2 -> aux (map hd1 hd2 :: res) (tl1, tl2)
40 let list_map2_filter map l1 l2 =
41 let rec filter l = function
43 | None :: tl -> filter l tl
44 | Some a :: tl -> filter (a :: l) tl
46 filter [] (list_rev_map2 map l1 l2)
49 let rec aux a j = if j < 0 then a else aux (f j :: a) (pred j) in
52 (****************************************************************************)
54 type name = string option
56 type what = Cic.annterm
58 type using = Cic.annterm
61 type where = (hyp * name) option
62 type inferred = Cic.annterm
63 type pattern = Cic.annterm
65 type step = Note of note
66 | Theorem of name * what * note
69 | Intros of count option * name list * note
70 | Cut of name * what * note
71 | LetIn of name * what * note
72 | Rewrite of how * what * where * pattern * note
73 | Elim of what * using option * pattern * note
74 | Apply of what * note
75 | Change of inferred * what * where * pattern * note
76 | Clear of hyp list * note
77 | ClearBody of hyp * note
78 | Branch of step list list * note
80 (* annterm constructors *****************************************************)
82 let mk_arel i b = Cic.ARel ("", "", i, b)
84 (* grafite ast constructors *************************************************)
86 let floc = H.dummy_floc
88 let mk_note str = G.Comment (floc, G.Note (floc, str))
90 let mk_tacnote str a =
91 if str = "" then mk_note "" :: a else mk_note "" :: mk_note str :: a
93 let mk_notenote str a =
94 if str = "" then a else mk_note str :: a
97 if str = "" then a else mk_note "" :: mk_note str :: a
99 let mk_theorem name t =
100 let name = match name with Some name -> name | None -> assert false in
101 let obj = N.Theorem (`Theorem, name, t, None) in
102 G.Executable (floc, G.Command (floc, G.Obj (floc, obj)))
105 G.Executable (floc, G.Command (floc, G.Qed floc))
107 let mk_tactic tactic punctation =
108 G.Executable (floc, G.Tactic (floc, Some tactic, punctation))
110 let mk_punctation punctation =
111 G.Executable (floc, G.Tactic (floc, None, punctation))
113 let mk_id punctation =
114 let tactic = G.IdTac floc in
115 mk_tactic tactic punctation
117 let mk_intros xi xids punctation =
118 let tactic = G.Intros (floc, (xi, xids)) in
119 mk_tactic tactic punctation
121 let mk_cut name what punctation =
122 let name = match name with Some name -> name | None -> assert false in
123 let tactic = G.Cut (floc, Some name, what) in
124 mk_tactic tactic punctation
126 let mk_letin name what punctation =
127 let name = match name with Some name -> name | None -> assert false in
128 let tactic = G.LetIn (floc, what, name) in
129 mk_tactic tactic punctation
131 let mk_rewrite direction what where pattern punctation =
132 let direction = if direction then `RightToLeft else `LeftToRight in
133 let pattern, rename = match where with
134 | None -> (None, [], Some pattern), []
135 | Some (premise, name) -> (None, [premise, pattern], None), [name]
137 let tactic = G.Rewrite (floc, direction, what, pattern, rename) in
138 mk_tactic tactic punctation
140 let mk_elim what using pattern punctation =
141 let pattern = None, [], Some pattern in
142 let tactic = G.Elim (floc, what, using, pattern, (Some 0, [])) in
143 mk_tactic tactic punctation
145 let mk_apply t punctation =
146 let tactic = G.Apply (floc, t) in
147 mk_tactic tactic punctation
149 let mk_change t where pattern punctation =
150 let pattern = match where with
151 | None -> None, [], Some pattern
152 | Some (premise, _) -> None, [premise, pattern], None
154 let tactic = G.Change (floc, pattern, t) in
155 mk_tactic tactic punctation
157 let mk_clear ids punctation =
158 let tactic = G.Clear (floc, ids) in
159 mk_tactic tactic punctation
161 let mk_clearbody id punctation =
162 let tactic = G.ClearBody (floc, id) in
163 mk_tactic tactic punctation
166 let punctation = G.Branch floc in
167 mk_punctation punctation
169 let mk_dot = G.Dot floc
171 let mk_sc = G.Semicolon floc
173 let mk_cb = G.Merge floc
175 let mk_vb = G.Shift floc
177 (* rendering ****************************************************************)
179 let rec render_step sep a = function
180 | Note s -> mk_notenote s a
181 | Theorem (n, t, s) -> mk_theorem n t :: mk_thnote s a
182 | Qed s -> mk_qed :: mk_tacnote s a
183 | Id s -> mk_id sep :: mk_tacnote s a
184 | Intros (c, ns, s) -> mk_intros c ns sep :: mk_tacnote s a
185 | Cut (n, t, s) -> mk_cut n t sep :: mk_tacnote s a
186 | LetIn (n, t, s) -> mk_letin n t sep :: mk_tacnote s a
187 | Rewrite (b, t, w, e, s) -> mk_rewrite b t w e sep :: mk_tacnote s a
188 | Elim (t, xu, e, s) -> mk_elim t xu e sep :: mk_tacnote s a
189 | Apply (t, s) -> mk_apply t sep :: mk_tacnote s a
190 | Change (t, _, w, e, s) -> mk_change t w e sep :: mk_tacnote s a
191 | Clear (ns, s) -> mk_clear ns sep :: mk_tacnote s a
192 | ClearBody (n, s) -> mk_clearbody n sep :: mk_tacnote s a
193 | Branch ([], s) -> a
194 | Branch ([ps], s) -> render_steps sep a ps
195 | Branch (ps :: pss, s) ->
196 let a = mk_ob :: mk_tacnote s a in
197 let a = List.fold_left (render_steps mk_vb) a (List.rev pss) in
198 mk_punctation sep :: render_steps mk_cb a ps
200 and render_steps sep a = function
202 | [p] -> render_step sep a p
203 | p :: Branch ([], _) :: ps ->
204 render_steps sep a (p :: ps)
205 | p :: ((Branch (_ :: _ :: _, _) :: _) as ps) ->
206 render_steps sep (render_step mk_sc a p) ps
208 render_steps sep (render_step mk_dot a p) ps
210 let render_steps a = render_steps mk_dot a
212 (* counting *****************************************************************)
214 let rec count_step a = function
218 | Branch (pps, _) -> List.fold_left count_steps a pps
221 and count_steps a = List.fold_left count_step a