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/
26 exception AlreadyDefined of UriManager.uri
28 let auxiliary_lemmas_hashtbl = UriManager.UriHashtbl.create 29
30 (* uri |--> (derived_coercions_in_the_coercion_DB, derived_coercions_in_lib)
32 * in case of remove_coercion uri, the first component is removed from the
33 * coercion DB, while the second is passed to remove_obj (and is not [] only if
34 * add_coercion is called with add_composites
36 let coercion_hashtbl = UriManager.UriHashtbl.create 3
38 let merge_coercions obj =
40 let rec aux2 = (fun (u,t) -> u,aux t)
42 | C.Rel _ | C.Sort _ as t -> t
43 | C.Meta _ | C.Implicit _ -> assert false
44 | C.Cast (te,ty) -> C.Cast (aux te, aux ty)
45 | C.Prod (name,so,dest) ->
46 C.Prod (name, aux so, aux dest)
47 | C.Lambda (name,so,dest) ->
48 C.Lambda (name, aux so, aux dest)
49 | C.LetIn (name,so,dest) ->
50 C.LetIn (name, aux so, aux dest)
51 | (Cic.Appl [ c1 ; (Cic.Appl [c2; head]) ]) as t when
52 CoercGraph.is_a_coercion c1 && CoercGraph.is_a_coercion c2 ->
53 let source_carr = CoercGraph.source_of c2 in
54 let tgt_carr = CoercGraph.target_of c1 in
55 (match CoercGraph.look_for_coercion source_carr tgt_carr
57 | CoercGraph.SomeCoercion c -> Cic.Appl [ c ; head ]
58 | _ -> assert false) (* the composite coercion must exist *)
59 | C.Appl l -> C.Appl (List.map aux l)
60 | C.Var (uri,exp_named_subst) ->
61 let exp_named_subst = List.map aux2 exp_named_subst in
62 C.Var (uri, exp_named_subst)
63 | C.Const (uri,exp_named_subst) ->
64 let exp_named_subst = List.map aux2 exp_named_subst in
65 C.Const (uri, exp_named_subst)
66 | C.MutInd (uri,tyno,exp_named_subst) ->
67 let exp_named_subst = List.map aux2 exp_named_subst in
68 C.MutInd (uri,tyno,exp_named_subst)
69 | C.MutConstruct (uri,tyno,consno,exp_named_subst) ->
70 let exp_named_subst = List.map aux2 exp_named_subst in
71 C.MutConstruct (uri,tyno,consno,exp_named_subst)
72 | C.MutCase (uri,tyno,out,te,pl) ->
73 let pl = List.map aux pl in
74 C.MutCase (uri,tyno,aux out,aux te,pl)
76 let fl = List.map (fun (name,idx,ty,bo)->(name,idx,aux ty,aux bo)) fl in
78 | C.CoFix (fno, fl) ->
79 let fl = List.map (fun (name,ty,bo) -> (name, aux ty, aux bo)) fl in
83 | C.Constant (id, body, ty, params, attrs) ->
87 | Some body -> Some (aux body)
90 C.Constant (id, body, ty, params, attrs)
91 | C.Variable (name, body, ty, params, attrs) ->
95 | Some body -> Some (aux body)
98 C.Variable (name, body, ty, params, attrs)
99 | C.CurrentProof (_name, _conjectures, _body, _ty, _params, _attrs) ->
101 | C.InductiveDefinition (indtys, params, leftno, attrs) ->
104 (fun (name, ind, arity, cl) ->
105 let arity = aux arity in
106 let cl = List.map (fun (name, ty) -> (name,aux ty)) cl in
107 (name, ind, arity, cl))
110 C.InductiveDefinition (indtys, params, leftno, attrs)
112 let uris_of_obj uri =
113 let innertypesuri = UriManager.innertypesuri_of_uri uri in
114 let bodyuri = UriManager.bodyuri_of_uri uri in
115 let univgraphuri = UriManager.univgraphuri_of_uri uri in
116 innertypesuri,bodyuri,univgraphuri
118 let paths_and_uris_of_obj uri ~basedir =
119 let basedir = basedir ^ "/xml" in
120 let innertypesuri, bodyuri, univgraphuri = uris_of_obj uri in
121 let innertypesfilename = Str.replace_first (Str.regexp "^cic:") ""
122 (UriManager.string_of_uri innertypesuri) ^ ".xml.gz" in
123 let innertypespath = basedir ^ "/" ^ innertypesfilename in
124 let xmlfilename = Str.replace_first (Str.regexp "^cic:/") ""
125 (UriManager.string_of_uri uri) ^ ".xml.gz" in
126 let xmlpath = basedir ^ "/" ^ xmlfilename in
127 let xmlbodyfilename = Str.replace_first (Str.regexp "^cic:/") ""
128 (UriManager.string_of_uri uri) ^ ".body.xml.gz" in
129 let xmlbodypath = basedir ^ "/" ^ xmlbodyfilename in
130 let xmlunivgraphfilename = Str.replace_first (Str.regexp "^cic:/") ""
131 (UriManager.string_of_uri univgraphuri) ^ ".xml.gz" in
132 let xmlunivgraphpath = basedir ^ "/" ^ xmlunivgraphfilename in
133 xmlpath, xmlbodypath, innertypespath, bodyuri, innertypesuri,
134 xmlunivgraphpath, univgraphuri
136 let save_object_to_disk ~basedir uri obj ugraph univlist =
137 let ensure_path_exists path =
138 let dir = Filename.dirname path in
141 (* generate annobj, ids_to_inner_sorts and ids_to_inner_types *)
142 let annobj = Cic2acic.plain_acic_object_of_cic_object obj in
146 uri ?ids_to_inner_sorts:None ~ask_dtd_to_the_getter:false annobj
148 let xmlpath, xmlbodypath, innertypespath, bodyuri, innertypesuri,
149 xmlunivgraphpath, univgraphuri =
150 paths_and_uris_of_obj uri basedir
152 List.iter HExtlib.mkdir (List.map Filename.dirname [xmlpath]);
153 (* now write to disk *)
154 ensure_path_exists xmlpath;
155 Xml.pp ~gzip:true xml (Some xmlpath);
156 CicUniv.write_xml_of_ugraph xmlunivgraphpath ugraph univlist;
157 (* we return a list of uri,path we registered/created *)
159 (univgraphuri,xmlunivgraphpath) ::
160 (* now the optional body, both write and register *)
161 (match bodyxml,bodyuri with
163 | Some bodyxml,Some bodyuri->
164 ensure_path_exists xmlbodypath;
165 Xml.pp ~gzip:true bodyxml (Some xmlbodypath);
166 [bodyuri, xmlbodypath]
171 let profiler = HExtlib.profile "add_obj.typecheck_obj" in
172 fun uri obj -> profiler.HExtlib.profile (CicTypeChecker.typecheck_obj uri) obj
175 let profiler = HExtlib.profile "add_obj.index_obj" in
177 profiler.HExtlib.profile (fun uri -> MetadataDb.index_obj ~dbd ~uri) uri
179 let add_single_obj uri obj ~basedir =
181 if List.mem `Generated (CicUtil.attributes_of_obj obj) &&
182 not (CoercGraph.is_a_coercion (Cic.Const (uri, [])))
188 let dbd = LibraryDb.instance () in
189 if CicEnvironment.in_library uri then
190 raise (AlreadyDefined uri)
192 typecheck_obj uri obj; (* 1 *)
193 let _, ugraph, univlist =
194 CicEnvironment.get_cooked_obj_with_univlist CicUniv.empty_ugraph uri in
196 index_obj ~dbd ~uri; (* 2 must be in the env *)
199 let new_stuff = save_object_to_disk ~basedir uri obj ugraph univlist in
202 (Printf.sprintf "%s defined" (UriManager.string_of_uri uri))
204 List.iter HExtlib.safe_remove (List.map snd new_stuff); (* -3 *)
207 ignore(LibraryDb.remove_uri uri); (* -2 *)
210 CicEnvironment.remove_obj uri; (* -1 *)
214 let remove_single_obj uri =
215 let derived_uris_of_uri uri =
216 let innertypesuri, bodyuri, univgraphuri = uris_of_obj uri in
217 innertypesuri::univgraphuri::(match bodyuri with None -> [] | Some u -> [u])
221 (if UriManager.uri_is_ind uri then LibraryDb.xpointers_of_ind uri else []) @
222 derived_uris_of_uri uri
227 let file = Http_getter.resolve' uri in
228 HExtlib.safe_remove file;
229 HExtlib.rmdir_descend (Filename.dirname file)
230 with Http_getter_types.Key_not_found _ -> ());
231 ignore (LibraryDb.remove_uri uri);
232 (*CoercGraph.remove_coercion uri;*)
233 CicEnvironment.remove_obj uri)
236 (*** GENERATION OF AUXILIARY LEMMAS ***)
238 let generate_elimination_principles ~basedir uri =
242 let uri,obj = CicElim.elim_of ~sort uri 0 in
243 add_single_obj uri obj ~basedir;
245 with CicElim.Can_t_eliminate -> ()
248 List.iter elim [ Cic.Prop; Cic.Set; (Cic.Type (CicUniv.fresh ())) ];
251 List.iter remove_single_obj !uris;
254 (* COERICONS ***********************************************************)
256 let remove_all_coercions () =
257 UriManager.UriHashtbl.clear coercion_hashtbl;
258 CoercDb.remove_coercion (fun (_,_,u1) -> true)
260 let add_coercion ~basedir ~add_composites uri =
262 let coer = CicUtil.term_of_uri uri in
263 CicTypeChecker.type_of_aux' [] [] coer CicUniv.empty_ugraph
265 (* we have to get the source and the tgt type uri
266 * in Coq syntax we have already their names, but
267 * since we don't support Funclass and similar I think
268 * all the coercion should be of the form
270 * So we should be able to extract them from the coercion type
272 * Currently only (_:T1)T2 is supported.
273 * should we saturate it with metas in case we insert it?
276 let extract_last_two_p ty =
277 let rec aux = function
278 | Cic.Prod( _, src, Cic.Prod (n,t1,t2)) ->
280 (* not implemented: aux (Cic.Prod(n,t1,t2)) *)
281 | Cic.Prod( _, src, tgt) -> src, tgt
286 let ty_src, ty_tgt = extract_last_two_p coer_ty in
287 let src_uri = CoercDb.coerc_carr_of_term (CicReduction.whd [] ty_src) in
288 let tgt_uri = CoercDb.coerc_carr_of_term (CicReduction.whd [] ty_tgt) in
289 let new_coercions = CicCoercion.close_coercion_graph src_uri tgt_uri uri in
290 let composite_uris = List.map (fun (_,_,uri,_) -> uri) new_coercions in
293 (fun (src,tgt,uri,_) -> CoercDb.add_coercion (src,tgt,uri))
295 CoercDb.add_coercion (src_uri, tgt_uri, uri);
296 (* add the composites obj and they eventual lemmas *)
298 if add_composites then
300 (fun acc (_,_,uri,obj) ->
301 add_single_obj ~basedir uri obj;
303 composite_uris new_coercions
307 (* store that composite_uris are related to uri. the first component is the
308 * stuff in the DB while the second is stuff for remove_obj *)
309 UriManager.UriHashtbl.add coercion_hashtbl uri
310 (composite_uris,if add_composites then composite_uris else []);
313 let remove_coercion uri =
315 let (composites_in_db, composites_in_lib) =
316 UriManager.UriHashtbl.find coercion_hashtbl uri
318 UriManager.UriHashtbl.remove coercion_hashtbl uri;
319 CoercDb.remove_coercion (fun (_,_,u) -> UriManager.eq uri u);
320 (* remove from the DB *)
322 (fun u -> CoercDb.remove_coercion (fun (_,_,u1) -> UriManager.eq u u1))
324 (* remove composites from the lib *)
325 List.iter remove_single_obj composites_in_lib
327 Not_found -> () (* mhh..... *)
330 let generate_projections ~basedir uri fields =
332 let projections = CicRecord.projections_of uri (List.map fst fields) in
335 (fun (uri, name, bo) (_name, coercion) ->
338 CicTypeChecker.type_of_aux' [] [] bo CicUniv.empty_ugraph in
339 let attrs = [`Class `Projection; `Generated] in
340 let obj = Cic.Constant (name,Some bo,ty,[],attrs) in
342 add_single_obj ~basedir uri obj;
345 add_coercion ~basedir ~add_composites:true uri
349 uris := uri :: composites @ !uris
351 CicTypeChecker.TypeCheckerFailure s ->
353 ("Unable to create projection " ^ name ^ " cause: " ^ Lazy.force s);
354 | CicEnvironment.Object_not_found uri ->
355 let depend = UriManager.name_of_uri uri in
357 ("Unable to create projection " ^ name ^ " because it requires " ^
359 ) projections fields;
362 List.iter remove_single_obj !uris;
366 let add_obj uri obj ~basedir =
367 add_single_obj uri obj ~basedir;
372 | Cic.Constant _ -> ()
373 | Cic.InductiveDefinition (_,_,_,attrs) ->
374 uris := !uris @ generate_elimination_principles ~basedir uri;
375 let rec get_record_attrs =
378 | (`Class (`Record fields))::_ -> Some fields
379 | _::tl -> get_record_attrs tl
381 (match get_record_attrs attrs with
382 | None -> () (* not a record *)
384 uris := !uris @ (generate_projections ~basedir uri fields))
386 | Cic.Variable _ -> assert false
388 UriManager.UriHashtbl.add auxiliary_lemmas_hashtbl uri !uris;
391 List.iter remove_single_obj !uris;
397 let res = UriManager.UriHashtbl.find auxiliary_lemmas_hashtbl uri in
398 UriManager.UriHashtbl.remove auxiliary_lemmas_hashtbl uri;
401 Not_found -> [] (*assert false*)
403 List.iter remove_single_obj (uri::uris)