1 (* Copyright (C) 2004, 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 let symbol_table = Hashtbl.create 1024
32 let sort_of_string = function
40 let o,_ = CicEnvironment.get_obj CicUniv.empty_ugraph uri in
42 | Cic.InductiveDefinition (l,_,_,_) -> l
45 let name_of_inductive_type uri i =
46 let types = get_types uri in
47 let (name, _, _, _) = try List.nth types i with Not_found -> assert false in
50 (* returns <name, type> pairs *)
51 let constructors_of_inductive_type uri i =
52 let types = get_types uri in
53 let (_, _, _, constructors) =
54 try List.nth types i with Not_found -> assert false
58 (* returns name only *)
59 let constructor_of_inductive_type uri i j =
61 fst (List.nth (constructors_of_inductive_type uri i) (j-1))
62 with Not_found -> assert false)
64 let ast_of_acic ids_to_inner_sorts acic =
65 let ids_to_uris = Hashtbl.create 503 in
66 let register_uri id uri = Hashtbl.add ids_to_uris id uri in
69 sort_of_string (Hashtbl.find ids_to_inner_sorts id)
70 with Not_found -> assert false
72 let idref id t = Ast.AttributedTerm (`IdRef id, t) in
75 | Cic.ARel (id,_,_,b) -> idref id (Ast.Ident (b, None))
76 | Cic.AVar (id,uri,subst) ->
77 register_uri id (UriManager.string_of_uri uri);
79 (Ast.Ident (UriManager.name_of_uri uri, astsubst_of_cicsubst subst))
80 | Cic.AMeta (id,n,l) -> idref id (Ast.Meta (n, astcontext_of_ciccontext l))
81 | Cic.ASort (id,Cic.Prop) -> idref id (Ast.Sort `Prop)
82 | Cic.ASort (id,Cic.Set) -> idref id (Ast.Sort `Set)
83 | Cic.ASort (id,Cic.Type _) -> idref id (Ast.Sort `Type) (* TASSI *)
84 | Cic.ASort (id,Cic.CProp) -> idref id (Ast.Sort `CProp)
85 | Cic.AImplicit _ -> assert false
86 | Cic.AProd (id,n,s,t) ->
88 match sort_of_id id with
90 | `Prop | `CProp -> `Forall
92 idref id (Ast.Binder (binder_kind, (n, Some (aux s)), aux t))
93 | Cic.ACast (id,v,t) ->
94 idref id (Ast.Appl [idref id (Ast.Symbol ("cast", 0)); aux v; aux t])
95 | Cic.ALambda (id,n,s,t) ->
96 idref id (Ast.Binder (`Lambda, (n, Some (aux s)), aux t))
97 | Cic.ALetIn (id,n,s,t) -> idref id (Ast.LetIn ((n, None), aux s, aux t))
98 | Cic.AAppl (aid,Cic.AConst (sid,uri,subst)::tl) ->
99 let uri_str = UriManager.string_of_uri uri in
100 register_uri sid uri_str;
102 let f = Hashtbl.find symbol_table uri_str in
107 (Ast.Ident (UriManager.name_of_uri uri,
108 astsubst_of_cicsubst subst)) :: (List.map aux tl))))
109 | Cic.AAppl (aid,Cic.AMutInd (sid,uri,i,subst)::tl) ->
110 let name = name_of_inductive_type uri i in
111 let uri_str = UriManager.string_of_uri uri in
113 uri_str ^ "#xpointer(1/" ^ (string_of_int (i + 1)) ^ ")" in
114 register_uri sid puri_str;
116 (let f = Hashtbl.find symbol_table puri_str in
122 astsubst_of_cicsubst subst)) :: (List.map aux tl))))
123 | Cic.AAppl (id,li) -> idref id (Ast.Appl (List.map aux li))
124 | Cic.AConst (id,uri,subst) ->
125 let uri_str = UriManager.string_of_uri uri in
126 register_uri id uri_str;
128 let f = Hashtbl.find symbol_table uri_str in
133 (UriManager.name_of_uri uri, astsubst_of_cicsubst subst)))
134 | Cic.AMutInd (id,uri,i,subst) ->
135 let name = name_of_inductive_type uri i in
136 let uri_str = UriManager.string_of_uri uri in
138 uri_str ^ "#xpointer(1/" ^ (string_of_int (i + 1)) ^ ")" in
139 register_uri id puri_str;
141 let f = Hashtbl.find symbol_table puri_str in
144 idref id (Ast.Ident (name, astsubst_of_cicsubst subst)))
145 | Cic.AMutConstruct (id,uri,i,j,subst) ->
146 let name = constructor_of_inductive_type uri i j in
147 let uri_str = UriManager.string_of_uri uri in
148 let puri_str = sprintf "%s#xpointer(1/%d/%d)" uri_str (i + 1) j in
149 register_uri id puri_str;
151 let f = Hashtbl.find symbol_table puri_str in
154 idref id (Ast.Ident (name, astsubst_of_cicsubst subst)))
155 | Cic.AMutCase (id,uri,typeno,ty,te,patterns) ->
156 let name = name_of_inductive_type uri typeno in
157 let constructors = constructors_of_inductive_type uri typeno in
158 let rec eat_branch ty pat =
160 | Cic.Prod (_, _, t), Cic.ALambda (_, name, s, t') ->
161 let (cv, rhs) = eat_branch t t' in
162 (name, Some (aux s)) :: cv, rhs
163 | _, _ -> [], aux pat
167 (fun (name, ty) pat ->
168 let (capture_variables, rhs) = eat_branch ty pat in
169 ((name, capture_variables), rhs))
170 constructors patterns
172 idref id (Ast.Case (aux te, Some name, Some (aux ty), patterns))
173 | Cic.AFix (id, no, funs) ->
176 (fun (_, n, decr_idx, ty, bo) ->
177 ((Cic.Name n, Some (aux ty)), aux bo, decr_idx))
182 (match List.nth defs no with
183 | (Cic.Name n, _), _, _ -> n
185 with Not_found -> assert false
187 idref id (Ast.LetRec (`Inductive, defs, Ast.Ident (name, None)))
188 | Cic.ACoFix (id, no, funs) ->
191 (fun (_, n, ty, bo) -> ((Cic.Name n, Some (aux ty)), aux bo, 0))
196 (match List.nth defs no with
197 | (Cic.Name n, _), _, _ -> n
199 with Not_found -> assert false
201 idref id (Ast.LetRec (`CoInductive, defs, Ast.Ident (name, None)))
203 and astsubst_of_cicsubst subst =
205 (List.map (fun (uri, annterm) ->
206 (UriManager.name_of_uri uri, aux annterm))
209 and astcontext_of_ciccontext context =
213 | Some annterm -> Some (aux annterm))
217 aux acic, ids_to_uris
219 let _ = (** fill symbol_table *)
220 let add_symbol name uri =
221 Hashtbl.add symbol_table uri
222 (fun aid sid args acic2ast ->
223 Ast.AttributedTerm (`IdRef aid,
224 Ast.Appl (Ast.AttributedTerm (`IdRef sid, Ast.Symbol (name, 0)) ::
225 List.map acic2ast args)))
228 Hashtbl.add symbol_table HelmLibraryObjects.Logic.eq_XURI
229 (fun aid sid args acic2ast ->
230 Ast.AttributedTerm (`IdRef aid,
232 Ast.AttributedTerm (`IdRef sid, Ast.Symbol ("eq", 0)) ::
233 List.map acic2ast (List.tl args))));
235 Hashtbl.add symbol_table HelmLibraryObjects.Logic.ex_XURI
236 (fun aid sid args acic2ast ->
237 match (List.tl args) with
238 [Cic.ALambda (_,Cic.Name n,s,t)] ->
239 Ast.AttributedTerm (`IdRef aid,
240 Ast.Binder (`Exists, (Cic.Name n, Some (acic2ast s)), acic2ast t))
241 | _ -> raise Not_found);
242 add_symbol "and" HelmLibraryObjects.Logic.and_XURI;
243 add_symbol "or" HelmLibraryObjects.Logic.or_XURI;
244 add_symbol "iff" HelmLibraryObjects.Logic.iff_SURI;
245 add_symbol "not" HelmLibraryObjects.Logic.not_SURI;
246 add_symbol "inv" HelmLibraryObjects.Reals.rinv_SURI;
247 add_symbol "opp" HelmLibraryObjects.Reals.ropp_SURI;
248 add_symbol "leq" HelmLibraryObjects.Peano.le_XURI;
249 add_symbol "leq" HelmLibraryObjects.Reals.rle_SURI;
250 add_symbol "lt" HelmLibraryObjects.Peano.lt_SURI;
251 add_symbol "lt" HelmLibraryObjects.Reals.rlt_SURI;
252 add_symbol "geq" HelmLibraryObjects.Peano.ge_SURI;
253 add_symbol "geq" HelmLibraryObjects.Reals.rge_SURI;
254 add_symbol "gt" HelmLibraryObjects.Peano.gt_SURI;
255 add_symbol "gt" HelmLibraryObjects.Reals.rgt_SURI;
256 add_symbol "plus" HelmLibraryObjects.Peano.plus_SURI;
257 add_symbol "plus" HelmLibraryObjects.BinInt.zplus_SURI;
258 add_symbol "times" HelmLibraryObjects.Peano.mult_SURI;
259 add_symbol "times" HelmLibraryObjects.Reals.rmult_SURI;
260 add_symbol "minus" HelmLibraryObjects.Peano.minus_SURI;
261 add_symbol "minus" HelmLibraryObjects.Reals.rminus_SURI;
262 add_symbol "div" HelmLibraryObjects.Reals.rdiv_SURI;
263 Hashtbl.add symbol_table HelmLibraryObjects.Reals.r0_SURI
264 (fun aid sid args acic2ast ->
265 Ast.AttributedTerm (`IdRef sid, Ast.Num ("0", 0)));
266 Hashtbl.add symbol_table HelmLibraryObjects.Reals.r1_SURI
267 (fun aid sid args acic2ast ->
268 Ast.AttributedTerm (`IdRef sid, Ast.Num ("1", 0)));
270 Hashtbl.add symbol_table HelmLibraryObjects.Reals.rplus_SURI
271 (fun aid sid args acic2ast ->
273 Ast.AttributedTerm (`IdRef aid,
275 Ast.AttributedTerm (`IdRef sid, Ast.Symbol ("plus", 0)) ::
276 List.map acic2ast args))
278 let rec aux acc = function
279 | [ Cic.AConst (nid, uri, []); n] when
280 UriManager.eq uri HelmLibraryObjects.Reals.r1_URI ->
282 | Cic.AConst (_, uri, []) when
283 UriManager.eq uri HelmLibraryObjects.Reals.r1_URI ->
284 Ast.AttributedTerm (`IdRef aid,
285 Ast.Num (string_of_int (acc + 2), 0))
286 | Cic.AAppl (_, Cic.AConst (_, uri, []) :: args) when
287 UriManager.eq uri HelmLibraryObjects.Reals.rplus_URI ->