1 (* Copyright (C) 2004-2005, 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://helm.cs.unibo.it/
30 (** raised when one of the script margins (top or bottom) is reached *)
33 let safe_substring s i j =
34 try String.sub s i j with Invalid_argument _ -> assert false
36 let heading_nl_RE = Pcre.regexp "^\\s*\n\\s*"
37 let only_dust_RE = Pcre.regexp "^(\\s|\n|%%[^\n]*\n)*$"
38 let multiline_RE = Pcre.regexp "^\n[^\n]+$"
39 let newline_RE = Pcre.regexp "\n"
42 if Pcre.pmatch ~rex:multiline_RE str then
43 "\n(** " ^ (Pcre.replace ~rex:newline_RE str) ^ " **)"
45 "\n(**\n" ^ str ^ "\n**)"
48 let s = Pcre.replace ~rex:heading_nl_RE s in
50 let nl_pos = String.index s '\n' in
54 let prepend_text header base =
55 if Pcre.pmatch ~rex:heading_nl_RE base then
56 sprintf "\n%s%s" header base
58 sprintf "%s\n%s" header base
60 (** creates a statement AST for the Goal tactic, e.g. "goal 7" *)
62 let module A = TacticAst in
63 let loc = CicAst.dummy_floc in
64 A.Executable (loc, A.Tactical (loc, A.Tactic (loc, A.Goal (loc, n))))
66 let eval_with_engine status user_goal parsed_text st =
67 let module TA = TacticAst in
68 let module TAPp = TacticAstPp in
69 let parsed_text_length = String.length parsed_text in
71 match st with TA.Executable (loc,ex) -> loc, ex | _ -> assert false
73 let goal_changed = ref false in
75 match status.proof_status with
76 | Incomplete_proof (_, goal) when goal <> user_goal ->
78 MatitaEngine.eval_ast status (goal_ast user_goal)
81 let new_status = MatitaEngine.eval_ast status st in
84 | TA.Command (_, TA.Alias _) ->
85 DisambiguateTypes.Environment.empty
86 | _ -> MatitaSync.alias_diff ~from:status new_status
89 if DisambiguateTypes.Environment.is_empty new_aliases then
92 prepend_text (CicTextualParser2.EnvironmentP3.to_string new_aliases)
98 (TAPp.pp_tactic (TA.Goal (loc, user_goal))(* ^ "\n"*))
103 [ new_status, new_text ], parsed_text_length
105 let disambiguate term status =
106 let module MD = MatitaDisambiguator in
107 let dbd = MatitaDb.instance () in
108 let metasenv = MatitaMisc.get_proof_metasenv status in
109 let context = MatitaMisc.get_proof_context status in
110 let aliases = MatitaMisc.get_proof_aliases status in
111 let interps = MD.disambiguate_term dbd context metasenv aliases term in
116 let eval_macro status (mathviewer:MatitaTypes.mathViewer) urichooser parsed_text mac =
117 let module TA = TacticAst in
118 let module TAPp = TacticAstPp in
119 let module MQ = MetadataQuery in
120 let module MDB = MatitaDb in
121 let module CTC = CicTypeChecker in
122 let module CU = CicUniv in
123 let parsed_text_length = String.length parsed_text in
124 let dbd = MatitaDb.instance () in
127 | TA.WMatch (loc, term) ->
128 let term = disambiguate term status in
129 let l = MQ.match_term ~dbd term in
130 let entry = `Whelp (TAPp.pp_macro_cic (TA.WMatch (loc, term)), l) in
131 mathviewer#show_uri_list ~reuse:true ~entry l;
132 [], parsed_text_length
133 | TA.WInstance (loc, term) ->
134 let term = disambiguate term status in
135 let l = MQ.instance ~dbd term in
136 let entry = `Whelp (TAPp.pp_macro_cic (TA.WInstance (loc, term)), l) in
137 mathviewer#show_uri_list ~reuse:true ~entry l;
138 [], parsed_text_length
139 | TA.WLocate (loc, s) ->
140 let l = MQ.locate ~dbd s in
141 let entry = `Whelp (TAPp.pp_macro_cic (TA.WLocate (loc, s)), l) in
142 mathviewer#show_uri_list ~reuse:true ~entry l;
143 [], parsed_text_length
144 | TA.WElim (loc, term) ->
145 let term = disambiguate term status in
148 | Cic.MutInd (uri,n,_) -> UriManager.string_of_uriref (uri,[n])
149 | _ -> failwith "Not a MutInd"
151 let l = MQ.elim ~dbd uri in
152 let entry = `Whelp (TAPp.pp_macro_cic (TA.WElim (loc, term)), l) in
153 mathviewer#show_uri_list ~reuse:true ~entry l;
154 [], parsed_text_length
155 | TA.WHint (loc, term) ->
156 let term = disambiguate term status in
157 let s = ((None,[0,[],term], Cic.Meta (0,[]) ,term),0) in
158 let l = List.map fst (MQ.experimental_hint ~dbd s) in
159 let entry = `Whelp (TAPp.pp_macro_cic (TA.WHint (loc, term)), l) in
160 mathviewer#show_uri_list ~reuse:true ~entry l;
161 [], parsed_text_length
164 let s = MatitaMisc.get_proof_status status in
165 let l = List.map fst (MQ.experimental_hint ~dbd s) in
166 let selected = urichooser l in
168 | [] -> [], parsed_text_length
174 TA.Apply (loc, CicAst.Uri (uri,None)))))))
176 let new_status = MatitaEngine.eval_ast status ast in
178 comment parsed_text ^
179 "\n" ^ TAPp.pp_statement ast
181 [ new_status , extra_text ],parsed_text_length
183 | TA.Check (_,term) ->
184 let metasenv = MatitaMisc.get_proof_metasenv status in
185 let context = MatitaMisc.get_proof_context status in
186 let aliases = MatitaMisc.get_proof_aliases status in
188 MatitaDisambiguator.disambiguate_term
189 dbd context metasenv aliases term
191 let _, metasenv , term, ugraph =
196 let ty,_ = CTC.type_of_aux' metasenv context term ugraph in
197 let t_and_ty = Cic.Cast (term,ty) in
198 mathviewer#show_entry (`Cic (t_and_ty,metasenv));
199 [], parsed_text_length
201 failwith "not implemented quit"
202 | _ -> failwith "not implemented"
205 let eval_executable status (mathviewer:MatitaTypes.mathViewer) urichooser user_goal parsed_text ex =
206 let module TA = TacticAst in
207 let module TAPp = TacticAstPp in
208 let module MD = MatitaDisambiguator in
209 let parsed_text_length = String.length parsed_text in
211 | TA.Command (loc, _) | TA.Tactical (loc, _) ->
212 eval_with_engine status user_goal parsed_text (TA.Executable (loc, ex))
213 | TA.Macro (_,mac) ->
214 eval_macro status mathviewer urichooser parsed_text mac
216 let rec eval_statement status (mathviewer:MatitaTypes.mathViewer) urichooser user_goal s =
217 if Pcre.pmatch ~rex:only_dust_RE s then raise Margin;
218 let st = CicTextualParser2.parse_statement (Stream.of_string s) in
219 let text_of_loc loc =
220 let parsed_text_length = snd (CicAst.loc_of_floc loc) in
221 let parsed_text = safe_substring s 0 parsed_text_length in
222 parsed_text, parsed_text_length
225 | TacticAst.Comment (loc,_)->
226 let parsed_text, parsed_text_length = text_of_loc loc in
227 let remain_len = String.length s - parsed_text_length in
228 let s = String.sub s parsed_text_length remain_len in
229 let s,len = eval_statement status mathviewer urichooser user_goal s in
231 | (status, text) :: tl ->
232 ((status, parsed_text ^ text)::tl), (parsed_text_length + len)
234 | TacticAst.Executable (loc, ex) ->
235 let parsed_text, parsed_text_length = text_of_loc loc in
236 eval_executable status mathviewer urichooser user_goal parsed_text ex
239 class script ~(buffer: GText.buffer) ~(init: MatitaTypes.status)
240 ~(mathviewer: MatitaTypes.mathViewer)
243 initializer self#reset ()
245 val mutable statements = []; (** executed statements *)
246 val mutable history = [ init ];
247 (** list of states before having executed statements. Head element of this
248 * list is the current state, last element is the state at the beginning of
250 * Invariant: this list length is 1 + length of statements *)
252 (** goal as seen by the user (i.e. metano corresponding to current tab) *)
253 val mutable userGoal = ~-1
255 (** text mark and tag representing locked part of a script *)
257 buffer#create_mark ~name:"locked" ~left_gravity:true buffer#start_iter
258 val locked_tag = buffer#create_tag [`BACKGROUND "lightblue"; `EDITABLE false]
260 (* history can't be empty, the invariant above grant that it contains at
261 * least the init status *)
262 method status = match history with hd :: _ -> hd | _ -> assert false
264 method private _advance ?statement () =
265 let s = match statement with Some s -> s | None -> self#getFuture in
266 MatitaLog.debug ("evaluating: " ^ first_line s ^ " ...");
267 let (entries, parsed_len) =
268 eval_statement self#status mathviewer urichooser userGoal s in
269 let (new_statuses, new_statements) = List.split entries in
271 prerr_endline "evalStatement returned";
272 List.iter (fun s -> prerr_endline ("'" ^ s ^ "'")) new_statements;
274 history <- List.rev new_statuses @ history;
275 statements <- List.rev new_statements @ statements;
276 let start = buffer#get_iter_at_mark (`MARK locked_mark) in
277 if statement = None then begin
278 let stop = start#copy#forward_chars parsed_len in
279 buffer#delete ~start ~stop
281 let new_text = String.concat "" new_statements in
282 buffer#insert ~iter:start new_text;
283 self#moveMark (String.length new_text);
285 method private _retract () =
286 match statements, history with
287 | last_statement :: _, cur_status :: prev_status :: _ ->
288 MatitaSync.time_travel ~present:cur_status ~past:prev_status;
289 statements <- List.tl statements;
290 history <- List.tl history;
291 self#moveMark (- (String.length last_statement))
294 method advance ?statement () =
296 self#_advance ?statement ()
299 method retract () = try self#_retract () with Margin -> ()
301 method private getFuture =
302 buffer#get_text ~start:(buffer#get_iter_at_mark (`MARK locked_mark))
303 ~stop:buffer#end_iter ()
305 (** @param rel_offset relative offset from current position of locked_mark *)
306 method private moveMark rel_offset =
307 let mark = `MARK locked_mark in
308 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
309 let current_mark_pos = buffer#get_iter_at_mark mark in
311 match rel_offset with
312 | 0 -> current_mark_pos
313 | n when n > 0 -> current_mark_pos#forward_chars n
314 | n (* when n < 0 *) -> current_mark_pos#backward_chars (abs n)
316 buffer#move_mark mark ~where:new_mark_pos;
317 buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:new_mark_pos;
320 val mutable observers = []
322 method addObserver (o: MatitaTypes.status -> unit) =
323 observers <- o :: observers
325 method private notify =
326 let status = self#status in
327 List.iter (fun o -> o status) observers
329 method loadFrom fname =
330 buffer#set_text (MatitaMisc.input_file fname);
333 method saveTo fname =
334 let oc = open_out fname in
335 output_string oc (buffer#get_text ~start:buffer#start_iter
336 ~stop:buffer#end_iter ());
339 method private goto_top =
340 MatitaSync.time_travel ~present:self#status ~past:init;
345 buffer#remove_tag locked_tag ~start:buffer#start_iter ~stop:buffer#end_iter;
346 buffer#move_mark (`MARK locked_mark) ~where:buffer#start_iter
350 buffer#delete ~start:buffer#start_iter ~stop:buffer#end_iter
352 method goto (pos: [`Top | `Bottom | `Cursor]) () =
354 | `Top -> self#goto_top
356 (try while true do self#_advance () done with Margin -> ())
358 let locked_iter () = buffer#get_iter_at_mark (`NAME "locked") in
359 let cursor_iter () = buffer#get_iter_at_mark `INSERT in
360 let rec forward_until_cursor () = (* go forward until locked > cursor *)
362 if (locked_iter ())#compare (cursor_iter ()) < 0 then
363 forward_until_cursor ()
365 let rec back_until_cursor () = (* go backward until locked < cursor *)
367 if (locked_iter ())#compare (cursor_iter ()) > 0 then
370 let cmp = (locked_iter ())#compare (cursor_iter ()) in
372 if cmp < 0 then (* locked < cursor *)
373 forward_until_cursor ()
374 else if cmp > 0 then (* locked > cursor *)
376 else (* cursor = locked *)
380 method onGoingProof () =
381 match self#status.proof_status with
382 | No_proof | Proof _ -> false
383 | Incomplete_proof _ -> true
384 | Intermediate _ -> assert false
386 method proofStatus = MatitaMisc.get_proof_status self#status
387 method proofMetasenv = MatitaMisc.get_proof_metasenv self#status
388 method proofContext = MatitaMisc.get_proof_context self#status
389 method setGoal n = userGoal <- n
393 MatitaLog.debug "script status:";
394 MatitaLog.debug ("history size: " ^ string_of_int (List.length history));
395 MatitaLog.debug (sprintf "%d statements:" (List.length statements));
396 List.iter MatitaLog.debug statements;
400 let _script = ref None
402 let script ~buffer ~init ~mathviewer ~urichooser () =
403 let s = new script ~buffer ~init ~mathviewer ~urichooser () in
407 let instance () = match !_script with None -> assert false | Some s -> s