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_______________________________________________________________ *)
14 module Ref = NReference
16 let nuri_of_ouri o = NUri.uri_of_string (UriManager.string_of_uri o);;
19 [`Type, NUri.uri_of_string ("cic:/matita/pts/Type"^string_of_int n^".univ")]
23 [`CProp, NUri.uri_of_string ("cic:/matita/pts/Type"^string_of_int n^".univ")]
26 let is_proof_irrelevant context ty =
28 CicReduction.whd context
29 (fst (CicTypeChecker.type_of_aux' [] context ty CicUniv.oblivion_ugraph))
31 Cic.Sort Cic.Prop -> true
38 let get_relevance ty =
39 let rec aux context ty =
40 match CicReduction.whd context ty with
42 not (is_proof_irrelevant context s)::aux (Some (n,Cic.Decl s)::context) t
45 (* | ty -> if is_proof_irrelevant context ty then raise InProp else []
52 type reference = Ref of NUri.uri * NReference.spec
53 let reference_of_ouri u indinfo =
54 let u = nuri_of_ouri u in
55 NReference.reference_of_string
56 (NReference.string_of_reference (Obj.magic (Ref (u,indinfo))))
60 | Ce of (NCic.hypothesis * NCic.obj list) Lazy.t
61 | Fix of (Ref.reference * string * NCic.term) Lazy.t
65 Ce l -> `Ce (Lazy.force l)
66 | Fix l -> `Fix (Lazy.force l)
71 (List.filter (fun v ->
72 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph v) with
73 Cic.Variable (_,Some _,_,_,_) -> false
74 | Cic.Variable (_,None,_,_,_) -> true
75 | _ -> assert false) vars)
79 (***** A function to restrict the context of a term getting rid of unsed
82 let restrict octx ctx ot =
83 let odummy = Cic.Implicit None in
84 let dummy = NCic.Meta (~-1,(0,NCic.Irl 0)) in
85 let rec aux m acc ot t =
88 | ohe::otl as octx,he::tl ->
89 if CicTypeChecker.does_not_occur octx 0 1 ot then
90 aux (m+1) acc (CicSubstitution.subst odummy ot)
91 (NCicSubstitution.subst dummy t) (otl,tl)
93 (match ohe,strictify he with
94 None,_ -> assert false
95 | Some (name,Cic.Decl oty),`Ce ((name', NCic.Decl ty),objs) ->
96 aux (m+1) ((m+1,objs,None)::acc) (Cic.Lambda (name,oty,ot))
97 (NCic.Lambda (name',ty,t)) (otl,tl)
98 | Some (name,Cic.Decl oty),`Fix (ref,name',ty) ->
99 aux (m+1) ((m+1,[],Some ref)::acc) (Cic.Lambda (name,oty,ot))
100 (NCic.Lambda (name',ty,t)) (otl,tl)
101 | Some (name,Cic.Def (obo,oty)),`Ce ((name', NCic.Def (bo,ty)),objs) ->
102 aux (m+1) ((m+1,objs,None)::acc) (Cic.LetIn (name,obo,oty,ot))
103 (NCic.LetIn (name',bo,ty,t)) (otl,tl)
104 | _,_ -> assert false)
105 | _,_ -> assert false in
106 let rec split_lambdas_and_letins octx ctx infos (ote,te) =
107 match infos, ote, te with
108 ([], _, _) -> octx,ctx,ote
109 | ((_,objs,None)::tl, Cic.Lambda(name,oso,ota), NCic.Lambda(name',so,ta)) ->
110 split_lambdas_and_letins ((Some(name,(Cic.Decl oso)))::octx)
111 (Ce (lazy ((name',NCic.Decl so),objs))::ctx) tl (ota,ta)
112 | ((_,_,Some r)::tl,Cic.Lambda(name,oso,ota),NCic.Lambda(name',so,ta)) ->
113 split_lambdas_and_letins ((Some(name,(Cic.Decl oso)))::octx)
114 (Fix (lazy (r,name',so))::ctx) tl (ota,ta)
115 | ((_,objs,None)::tl,Cic.LetIn(name,obo,oty,ota),NCic.LetIn(nam',bo,ty,ta))->
116 split_lambdas_and_letins ((Some (name,(Cic.Def (obo,oty))))::octx)
117 (Ce (lazy ((nam',NCic.Def (bo,ty)),objs))::ctx) tl (ota,ta)
118 | (_, _, _) -> assert false
120 let long_t,infos = aux 0 [] ot dummy (octx,ctx) in
121 let clean_octx,clean_ctx,clean_ot= split_lambdas_and_letins [] [] infos long_t
123 (*prerr_endline ("RESTRICT PRIMA: " ^ CicPp.pp ot (List.map (function None -> None | Some (name,_) -> Some name) octx));
124 prerr_endline ("RESTRICT DOPO: " ^ CicPp.pp clean_ot (List.map (function None -> None | Some (name,_) -> Some name) clean_octx));
126 clean_octx,clean_ctx,clean_ot, List.map (fun (rel,_,_) -> rel) infos
130 (**** The translation itself ****)
132 let cn_to_s = function
133 | Cic.Anonymous -> "_"
137 let splat mk_pi ctx t =
140 match strictify c with
141 | `Ce ((name, NCic.Def (bo,ty)),l') -> NCic.LetIn (name, ty, bo, t),l@l'
142 | `Ce ((name, NCic.Decl ty),l') when mk_pi -> NCic.Prod (name, ty, t),l@l'
143 | `Ce ((name, NCic.Decl ty),l') -> NCic.Lambda (name, ty, t),l@l'
144 | `Fix (_,name,ty) when mk_pi -> NCic.Prod (name, ty, t),l
145 | `Fix (_,name,ty) -> NCic.Lambda (name,ty,t),l)
149 let osplat mk_pi ctx t =
153 | Some (name, Cic.Def (bo,ty)) -> Cic.LetIn (name, ty, bo, t)
154 | Some (name, Cic.Decl ty) when mk_pi -> Cic.Prod (name, ty, t)
155 | Some (name, Cic.Decl ty) -> Cic.Lambda (name, ty, t)
156 | None -> assert false)
160 let context_tassonomy ctx =
161 let rec split inner acc acc1 = function
162 | Ce _ :: tl when inner -> split inner (acc+1) (acc1+1) tl
163 | Fix _ ::tl -> split false acc (acc1+1) tl
169 (match strictify ce with
170 `Ce ((_, NCic.Decl _),_) -> true
174 acc, List.length l, lazy (List.length (only_decl ())), acc1
179 let splat_args_for_rel ctx t ?rels n_fix =
184 let rec mk_irl = function 0 -> [] | n -> n::mk_irl (n - 1) in
185 mk_irl (List.length ctx)
187 let bound, free, _, primo_ce_dopo_fix = context_tassonomy ctx in
190 let rec aux = function
191 | n,_ when n = bound + n_fix -> []
193 (match strictify (List.nth ctx (n-1)) with
194 | `Fix (refe, _, _) when n < primo_ce_dopo_fix ->
195 NCic.Const refe :: aux (n-1,tl)
196 | `Fix _ | `Ce ((_, NCic.Decl _),_) ->
197 NCic.Rel (he - n_fix)::aux(n-1,tl)
198 | `Ce ((_, NCic.Def _),_) -> aux (n-1,tl))
199 | _,_ -> assert false
201 let args = aux (List.length ctx,rels) in
204 | _::_ -> NCic.Appl (t::args)
207 let splat_args ctx t n_fix rels =
208 let bound, _, _, primo_ce_dopo_fix = context_tassonomy ctx in
211 let rec aux = function
214 (match strictify (List.nth ctx (n-1)) with
215 | `Ce ((_, NCic.Decl _),_) when n <= bound ->
216 NCic.Rel he:: aux (n-1,tl)
217 | `Fix (refe, _, _) when n < primo_ce_dopo_fix ->
218 splat_args_for_rel ctx (NCic.Const refe) ~rels n_fix :: aux (n-1,tl)
219 | `Fix _ | `Ce((_, NCic.Decl _),_)-> NCic.Rel (he - n_fix)::aux(n-1,tl)
220 | `Ce ((_, NCic.Def _),_) -> aux (n - 1,tl)
222 | _,_ -> assert false
224 let args = aux (List.length ctx,rels) in
227 | _::_ -> NCic.Appl (t::args)
230 exception Nothing_to_do;;
232 let fix_outty curi tyno t context outty =
234 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph curi) with
235 Cic.InductiveDefinition (tyl,_,leftno,_) ->
236 let _,_,arity,_ = List.nth tyl tyno in
237 let rec count_prods leftno context arity =
238 match leftno, CicReduction.whd context arity with
240 | 0, Cic.Prod (name,so,ty) ->
241 1 + count_prods 0 (Some (name, Cic.Decl so)::context) ty
242 | _, Cic.Prod (name,so,ty) ->
243 count_prods (leftno - 1) (Some (name, Cic.Decl so)::context) ty
244 | _,_ -> assert false
246 (*prerr_endline (UriManager.string_of_uri curi);
247 prerr_endline ("LEFTNO: " ^ string_of_int leftno ^ " " ^ CicPp.ppterm arity);*)
248 leftno, count_prods leftno [] arity
249 | _ -> assert false in
251 let tty,_= CicTypeChecker.type_of_aux' [] context t CicUniv.oblivion_ugraph in
252 match CicReduction.whd context tty with
253 Cic.MutInd (_,_,ens) -> ens,[]
254 | Cic.Appl (Cic.MutInd (_,_,ens)::args) ->
255 ens,fst (HExtlib.split_nth leftno args)
258 let rec aux n irl context outsort =
259 match n, CicReduction.whd context outsort with
260 0, Cic.Prod _ -> raise Nothing_to_do
262 let irl = List.rev irl in
263 let ty = CicSubstitution.lift rightno (Cic.MutInd (curi,tyno,ens)) in
265 if args = [] && irl = [] then ty
267 Cic.Appl (ty::(List.map (CicSubstitution.lift rightno) args)@irl) in
268 let he = CicSubstitution.lift (rightno + 1) outty in
271 else Cic.Appl (he::List.map (CicSubstitution.lift 1) irl)
273 Cic.Lambda (Cic.Anonymous, ty, t)
274 | n, Cic.Prod (name,so,ty) ->
276 aux (n - 1) (Cic.Rel n::irl) (Some (name, Cic.Decl so)::context) ty
278 Cic.Lambda (name,so,ty')
279 | _,_ -> assert false
281 (*prerr_endline ("RIGHTNO = " ^ string_of_int rightno ^ " OUTTY = " ^ CicPp.ppterm outty);*)
283 fst (CicTypeChecker.type_of_aux' [] context outty CicUniv.oblivion_ugraph)
285 try aux rightno [] context outsort
286 with Nothing_to_do -> outty
287 (*prerr_endline (CicPp.ppterm outty ^ " <==> " ^ CicPp.ppterm outty');*)
291 let module C = Cic in
292 let rec aux context =
295 | C.Var (uri,exp_named_subst) ->
296 let exp_named_subst' =
297 List.map (function i,t -> i, (aux context t)) exp_named_subst in
298 C.Var (uri,exp_named_subst')
300 | C.Meta _ -> assert false
302 | C.Cast (v,t) -> C.Cast (aux context v, aux context t)
304 C.Prod (n, aux context s, aux ((Some (n, C.Decl s))::context) t)
305 | C.Lambda (n,s,t) ->
306 C.Lambda (n, aux context s, aux ((Some (n, C.Decl s))::context) t)
307 | C.LetIn (n,s,ty,t) ->
309 (n, aux context s, aux context ty,
310 aux ((Some (n, C.Def(s,ty)))::context) t)
311 | C.Appl l -> C.Appl (List.map (aux context) l)
312 | C.Const (uri,exp_named_subst) ->
313 let exp_named_subst' =
314 List.map (function i,t -> i, (aux context t)) exp_named_subst
316 C.Const (uri,exp_named_subst')
317 | C.MutInd (uri,tyno,exp_named_subst) ->
318 let exp_named_subst' =
319 List.map (function i,t -> i, (aux context t)) exp_named_subst
321 C.MutInd (uri, tyno, exp_named_subst')
322 | C.MutConstruct (uri,tyno,consno,exp_named_subst) ->
323 let exp_named_subst' =
324 List.map (function i,t -> i, (aux context t)) exp_named_subst
326 C.MutConstruct (uri, tyno, consno, exp_named_subst')
327 | C.MutCase (uri, tyno, outty, term, patterns) ->
328 let outty = fix_outty uri tyno term context outty in
329 C.MutCase (uri, tyno, aux context outty,
330 aux context term, List.map (aux context) patterns)
331 | C.Fix (funno, funs) ->
334 (fun (types,len) (n,_,ty,_) ->
335 ((Some (C.Name n,(C.Decl (CicSubstitution.lift len ty)))))::types,
341 (fun (name, indidx, ty, bo) ->
342 (name, indidx, aux context ty, aux (tys@context) bo)
345 | C.CoFix (funno, funs) ->
348 (fun (types,len) (n,ty,_) ->
349 ((Some (C.Name n,(C.Decl (CicSubstitution.lift len ty)))))::types,
355 (fun (name, ty, bo) ->
356 (name, aux context ty, aux (tys@context) bo)
363 let get_fresh,reset_seed =
367 string_of_int !seed),
368 (function () -> seed := 0)
372 let alpha t1 t2 ref ref' =
373 let rec aux t1 t2 = match t1,t2 with
374 | NCic.Rel n, NCic.Rel m when n=m -> ()
375 | NCic.Appl l1, NCic.Appl l2 -> List.iter2 aux l1 l2
376 | NCic.Lambda (_,s1,t1), NCic.Lambda (_,s2,t2)
377 | NCic.Prod (_,s1,t1), NCic.Prod (_,s2,t2) -> aux s1 s2; aux t1 t2
378 | NCic.LetIn (_,s1,ty1,t1), NCic.LetIn (_,s2,ty2,t2) ->
379 aux s1 s2; aux ty1 ty2; aux t1 t2
380 | NCic.Const (NReference.Ref (uu1,xp1)),
381 NCic.Const (NReference.Ref (uu2,xp2)) when
382 let NReference.Ref (u1,_) = ref in
383 let NReference.Ref (u2,_) = ref' in
384 NUri.eq uu1 u1 && NUri.eq uu2 u2 && xp1 = xp2
386 | NCic.Const r1, NCic.Const r2 when NReference.eq r1 r2 -> ()
387 | NCic.Meta _,NCic.Meta _ -> ()
388 | NCic.Implicit _,NCic.Implicit _ -> ()
389 | NCic.Sort x,NCic.Sort y when x=y -> ()
390 | NCic.Match (_,t1,t11,tl1), NCic.Match (_,t2,t22,tl2) ->
391 aux t1 t2;aux t11 t22;List.iter2 aux tl1 tl2
392 | _-> raise NotSimilar
394 try aux t1 t2; true with NotSimilar -> false
397 exception Found of NReference.reference;;
398 let cache = Hashtbl.create 313;;
399 let same_obj ref ref' =
401 | (_,_,_,_,NCic.Fixpoint (b1,l1,_)), (_,_,_,_,NCic.Fixpoint (b2,l2,_))
402 when List.for_all2 (fun (_,_,_,ty1,bo1) (_,_,_,ty2,bo2) ->
403 alpha ty1 ty2 ref ref' && alpha bo1 bo2 ref ref') l1 l2 && b1=b2->
407 let find_in_cache name obj ref =
410 (function (ref',obj') ->
413 NReference.Ref (_,NReference.Fix (fixno,recno,_)) -> recno,fixno
414 | NReference.Ref (_,NReference.CoFix (fixno)) -> ~-1,fixno
415 | _ -> assert false in
418 NReference.Ref (_,NReference.Fix (fixno',recno,_)) -> recno,fixno'
419 | NReference.Ref (_,NReference.CoFix (fixno')) -> ~-1,fixno'
420 | _ -> assert false in
421 if recno = recno' && fixno = fixno' && same_obj ref ref' (obj,obj') then (
423 prerr_endline ("!!!!!!!!!!! CACHE HIT !!!!!!!!!!\n" ^
424 NReference.string_of_reference ref ^ "\n" ^
425 NReference.string_of_reference ref' ^ "\n");
429 prerr_endline ("CACHE SAME NAME: " ^ NReference.string_of_reference ref ^ " <==> " ^ NReference.string_of_reference ref');
431 ) (Hashtbl.find_all cache name);
432 (* prerr_endline "<<< CACHE MISS >>>"; *)
435 | (_,_,_,_,NCic.Fixpoint (true,fl,_)) ,
436 NReference.Ref (_,NReference.Fix _) ->
437 ignore(List.fold_left (fun i (_,name,rno,_,_) ->
438 let ref = NReference.mk_fix i rno ref in
439 Hashtbl.add cache name (ref,obj);
442 | (_,_,_,_,NCic.Fixpoint (false,fl,_)) ,
443 NReference.Ref (_,NReference.CoFix _) ->
444 ignore(List.fold_left (fun i (_,name,_,_,_) ->
445 let ref = NReference.mk_cofix i ref in
446 Hashtbl.add cache name (ref,obj);
452 with Found ref -> Some ref
455 let cache1 = UriManager.UriHashtbl.create 313;;
459 UriManager.UriHashtbl.find cache1 u
464 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph u) with
465 Cic.Constant (_,Some bo,ty,params,_)
466 | Cic.Variable (_,Some bo,ty,params,_) ->
467 ignore (height_of_term ~h bo);
468 ignore (height_of_term ~h ty);
469 List.iter (function uri -> h := max !h (get_height uri)) params;
473 UriManager.UriHashtbl.add cache1 u res;
475 and height_of_term ?(h=ref 0) t =
480 | Cic.Implicit _ -> assert false
481 | Cic.Var (uri,exp_named_subst)
482 | Cic.Const (uri,exp_named_subst)
483 | Cic.MutInd (uri,_,exp_named_subst)
484 | Cic.MutConstruct (uri,_,_,exp_named_subst) ->
485 h := max !h (get_height uri);
486 List.iter (function (_,t) -> aux t) exp_named_subst
487 | Cic.Meta (_,l) -> List.iter (function None -> () | Some t -> aux t) l
490 | Cic.Lambda (_,t1,t2) -> aux t1; aux t2
491 | Cic.LetIn (_,s,ty,t) -> aux s; aux ty; aux t
492 | Cic.Appl l -> List.iter aux l
493 | Cic.MutCase (_,_,outty,t,pl) -> aux outty; aux t; List.iter aux pl
494 | Cic.Fix (_, fl) -> List.iter (fun (_, _, ty, bo) -> aux ty; aux bo) fl; incr h
495 | Cic.CoFix (_, fl) -> List.iter (fun (_, ty, bo) -> aux ty; aux bo) fl; incr h
501 (* k=true if we are converting a term to be pushed in a ctx or if we are
502 converting the type of a fix;
503 k=false if we are converting a term to be put in the body of a fix;
504 in the latter case, we must permute Rels since the Fix abstraction will
505 preceed its lefts parameters; in the former case, there is nothing to
507 let rec aux k octx (ctx : ctx list) n_fix uri = function
508 | Cic.CoFix _ as cofix ->
509 let octx,ctx,fix,rels = restrict octx ctx cofix in
511 match fix with Cic.CoFix (cofixno,fl)->cofixno,fl | _-> assert false in
513 UriManager.uri_of_string
514 (UriManager.buri_of_uri uri^"/"^
515 UriManager.name_of_uri uri ^ "___" ^ get_fresh () ^ ".con")
517 let bctx, fixpoints_tys, tys, _ =
519 (fun (name,ty,_) (bctx, fixpoints, tys, idx) ->
520 let ty, fixpoints_ty = aux true octx ctx n_fix uri ty in
521 let r = reference_of_ouri buri(Ref.CoFix idx) in
522 bctx @ [Fix (lazy (r,name,ty))],
523 fixpoints_ty @ fixpoints,ty::tys,idx-1)
524 fl ([], [], [], List.length fl-1)
526 let bctx = bctx @ ctx in
527 let n_fl = List.length fl in
530 (fun (types,len) (n,ty,_) ->
531 (Some (Cic.Name n,(Cic.Decl (CicSubstitution.lift len ty)))::types,
536 (fun (name,_,bo) ty (l,fixpoints) ->
537 let bo, fixpoints_bo = aux false boctx bctx n_fl buri bo in
538 let splty,fixpoints_splty = splat true ctx ty in
539 let splbo,fixpoints_splbo = splat false ctx bo in
540 (([],name,~-1,splty,splbo)::l),
541 fixpoints_bo @ fixpoints_splty @ fixpoints_splbo @ fixpoints)
542 fl tys ([],fixpoints_tys)
545 nuri_of_ouri buri,0,[],[],
546 NCic.Fixpoint (false, fl, (`Generated, `Definition, `Regular))
548 let r = reference_of_ouri buri (Ref.CoFix cofixno) in
550 let _,name,_,_,_ = List.nth fl cofixno in
551 match find_in_cache name obj r with
555 splat_args ctx (NCic.Const r) n_fix rels, fixpoints @ obj
556 | Cic.Fix _ as fix ->
557 let octx,ctx,fix,rels = restrict octx ctx fix in
559 match fix with Cic.Fix (fixno,fl) -> fixno,fl | _ -> assert false in
561 UriManager.uri_of_string
562 (UriManager.buri_of_uri uri^"/"^
563 UriManager.name_of_uri uri ^ "___" ^ get_fresh () ^ ".con") in
564 let height = height_of_term fix - 1 in
565 let bad_bctx, fixpoints_tys, tys, _ =
567 (fun (name,recno,ty,_) (bctx, fixpoints, tys, idx) ->
568 let ty, fixpoints_ty = aux true octx ctx n_fix uri ty in
569 let r = (* recno is dummy here, must be lifted by the ctx len *)
570 reference_of_ouri buri (Ref.Fix (idx,recno,height))
572 bctx @ [Fix (lazy (r,name,ty))],
573 fixpoints_ty@fixpoints,ty::tys,idx-1)
574 fl ([], [], [], List.length fl-1)
576 let _, _, free_decls, _ = context_tassonomy (bad_bctx @ ctx) in
577 let free_decls = Lazy.force free_decls in
579 List.map (function ce -> match strictify ce with
580 | `Fix (Ref.Ref (_,Ref.Fix (idx, recno,height)),name, ty) ->
581 Fix (lazy (reference_of_ouri buri
582 (Ref.Fix (idx,recno+free_decls,height)),name,ty))
583 | _ -> assert false) bad_bctx @ ctx
585 let n_fl = List.length fl in
588 (fun (types,len) (n,_,ty,_) ->
589 (Some (Cic.Name n,(Cic.Decl (CicSubstitution.lift len ty)))::types,
592 let rno_fixno = ref 0 in
593 let fl, fixpoints,_ =
595 (fun (name,rno,oty,bo) ty (l,fixpoints,idx) ->
596 let bo, fixpoints_bo = aux false boctx bctx n_fl buri bo in
597 let splty,fixpoints_splty = splat true ctx ty in
598 let splbo,fixpoints_splbo = splat false ctx bo in
599 let rno = rno + free_decls in
600 if idx = fixno then rno_fixno := rno;
601 ((get_relevance (osplat true octx oty),name,rno,splty,splbo)::l),
602 fixpoints_bo@fixpoints_splty@fixpoints_splbo@fixpoints,idx+1)
603 fl tys ([],fixpoints_tys,0)
606 nuri_of_ouri buri,height,[],[],
607 NCic.Fixpoint (true, fl, (`Generated, `Definition, `Regular)) in
608 (*prerr_endline ("H(" ^ UriManager.string_of_uri buri ^ ") = " ^ string_of_int * height);*)
609 let r = reference_of_ouri buri (Ref.Fix (fixno,!rno_fixno,height)) in
611 let _,name,_,_,_ = List.nth fl fixno in
612 match find_in_cache name obj r with
616 splat_args ctx (NCic.Const r) n_fix rels, fixpoints @ obj
618 let bound, _, _, primo_ce_dopo_fix = context_tassonomy ctx in
619 (match List.nth ctx (n-1) with
620 | Fix l when n < primo_ce_dopo_fix ->
621 let r,_,_ = Lazy.force l in
622 splat_args_for_rel ctx (NCic.Const r) n_fix, []
623 | Ce _ when n <= bound -> NCic.Rel n, []
624 | Fix _ when n <= bound -> assert false
625 | Fix _ | Ce _ when k = true -> NCic.Rel n, []
626 | Fix _ | Ce _ -> NCic.Rel (n-n_fix), [])
627 | Cic.Lambda (name, (s as old_s), t) ->
628 let s, fixpoints_s = aux k octx ctx n_fix uri s in
629 let s'_and_fixpoints_s' = lazy (aux true octx ctx n_fix uri old_s) in
632 let s',fixpoints_s' = Lazy.force s'_and_fixpoints_s' in
633 ((cn_to_s name, NCic.Decl s'),fixpoints_s'))::ctx in
634 let octx = Some (name, Cic.Decl old_s) :: octx in
635 let t, fixpoints_t = aux k octx ctx n_fix uri t in
636 NCic.Lambda (cn_to_s name, s, t), fixpoints_s @ fixpoints_t
637 | Cic.Prod (name, (s as old_s), t) ->
638 let s, fixpoints_s = aux k octx ctx n_fix uri s in
639 let s'_and_fixpoints_s' = lazy (aux true octx ctx n_fix uri old_s) in
642 let s',fixpoints_s' = Lazy.force s'_and_fixpoints_s' in
643 ((cn_to_s name, NCic.Decl s'),fixpoints_s'))::ctx in
644 let octx = Some (name, Cic.Decl old_s) :: octx in
645 let t, fixpoints_t = aux k octx ctx n_fix uri t in
646 NCic.Prod (cn_to_s name, s, t), fixpoints_s @ fixpoints_t
647 | Cic.LetIn (name, (te as old_te), (ty as old_ty), t) ->
648 let te, fixpoints_s = aux k octx ctx n_fix uri te in
649 let te_and_fixpoints_s' = lazy (aux true octx ctx n_fix uri old_te) in
650 let ty, fixpoints_ty = aux k octx ctx n_fix uri ty in
651 let ty_and_fixpoints_ty' = lazy (aux true octx ctx n_fix uri old_ty) in
654 let te',fixpoints_s' = Lazy.force te_and_fixpoints_s' in
655 let ty',fixpoints_ty' = Lazy.force ty_and_fixpoints_ty' in
656 let fixpoints' = fixpoints_s' @ fixpoints_ty' in
657 ((cn_to_s name, NCic.Def (te', ty')),fixpoints'))::ctx in
658 let octx = Some (name, Cic.Def (old_te, old_ty)) :: octx in
659 let t, fixpoints_t = aux k octx ctx n_fix uri t in
660 NCic.LetIn (cn_to_s name, ty, te, t),
661 fixpoints_s @ fixpoints_t @ fixpoints_ty
663 let t, fixpoints_t = aux k octx ctx n_fix uri t in
664 let ty, fixpoints_ty = aux k octx ctx n_fix uri ty in
665 NCic.LetIn ("cast", ty, t, NCic.Rel 1), fixpoints_t @ fixpoints_ty
666 | Cic.Sort Cic.Prop -> NCic.Sort NCic.Prop,[]
667 | Cic.Sort (Cic.CProp u) ->
668 NCic.Sort (NCic.Type (mk_cprop (CicUniv.get_rank u))),[]
669 | Cic.Sort (Cic.Type u) ->
670 NCic.Sort (NCic.Type (mk_type (CicUniv.get_rank u))),[]
671 | Cic.Sort Cic.Set -> NCic.Sort (NCic.Type (mk_type 0)),[]
672 (* calculate depth in the univ_graph*)
677 let t, fixpoints = aux k octx ctx n_fix uri t in
678 (t::l,fixpoints@acc))
682 | (NCic.Appl l1)::l2 -> NCic.Appl (l1@l2), fixpoints
683 | _ -> NCic.Appl l, fixpoints)
684 | Cic.Const (curi, ens) ->
685 aux_ens k curi octx ctx n_fix uri ens
686 (match fst(CicEnvironment.get_obj CicUniv.oblivion_ugraph curi) with
687 | Cic.Constant (_,Some _,_,_,_) ->
688 NCic.Const (reference_of_ouri curi (Ref.Def (get_height curi)))
689 | Cic.Constant (_,None,_,_,_) ->
690 NCic.Const (reference_of_ouri curi Ref.Decl)
692 | Cic.MutInd (curi, tyno, ens) ->
693 let is_inductive, lno =
694 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph curi) with
695 Cic.InductiveDefinition ([],vars,lno,_) -> true, lno + count_vars vars
696 | Cic.InductiveDefinition ((_,b,_,_)::_,vars,lno,_) -> b, lno + count_vars vars
699 aux_ens k curi octx ctx n_fix uri ens
700 (NCic.Const (reference_of_ouri curi (Ref.Ind (is_inductive,tyno,lno))))
701 | Cic.MutConstruct (curi, tyno, consno, ens) ->
703 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph curi) with
704 Cic.InductiveDefinition (_,vars,lno,_) -> lno + count_vars vars
707 aux_ens k curi octx ctx n_fix uri ens
708 (NCic.Const (reference_of_ouri curi (Ref.Con (tyno,consno,lno))))
709 | Cic.Var (curi, ens) ->
710 (match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph curi) with
711 Cic.Variable (_,Some bo,_,_,_) ->
712 aux k octx ctx n_fix uri (CicSubstitution.subst_vars ens bo)
714 | Cic.MutCase (curi, tyno, outty, t, branches) ->
715 let is_inductive,lno =
716 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph curi) with
717 Cic.InductiveDefinition ([],vars,lno,_) -> true, lno + count_vars vars
718 | Cic.InductiveDefinition ((_,b,_,_)::_,vars,lno,_) -> b, lno + count_vars vars
719 | _ -> assert false in
720 let r = reference_of_ouri curi (Ref.Ind (is_inductive,tyno,lno)) in
721 let outty, fixpoints_outty = aux k octx ctx n_fix uri outty in
722 let t, fixpoints_t = aux k octx ctx n_fix uri t in
723 let branches, fixpoints =
726 let t, fixpoints = aux k octx ctx n_fix uri t in
727 (t::l,fixpoints@acc))
730 NCic.Match (r,outty,t,branches), fixpoints_outty@fixpoints_t@fixpoints
731 | Cic.Implicit _ | Cic.Meta _ -> assert false
732 and aux_ens k curi octx ctx n_fix uri ens he =
737 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph curi) with
738 Cic.Constant (_,_,_,params,_)
739 | Cic.InductiveDefinition (_,params,_,_) -> params
741 | Cic.CurrentProof _ -> assert false
745 (fun luri (l,objs) ->
746 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph luri) with
747 Cic.Variable (_,Some _,_,_,_) -> l, objs
748 | Cic.Variable (_,None,_,_,_) ->
749 let t = List.assoc luri ens in
750 let t,o = aux k octx ctx n_fix uri t in
757 | _::_ -> NCic.Appl (he::ens),objs
760 (* we are lambda-lifting also variables that do not occur *)
761 (* ctx does not distinguish successive blocks of cofix, since there may be no
762 * lambda separating them *)
763 let convert_term uri t =
764 aux false [] [] 0 uri t
767 let cook mode vars t =
768 let t = fix_outtype t in
769 let varsno = List.length vars in
770 let t = CicSubstitution.lift varsno t in
771 let rec aux n acc l =
773 snd(List.fold_left (fun (i,res) uri -> i+1,(uri,Cic.Rel i)::res) (1,[]) acc)
776 [] -> CicSubstitution.subst_vars subst t
779 match fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph uri) with
780 Cic.Variable (_,bo,ty,_,_) ->
781 HExtlib.map_option fix_outtype bo, fix_outtype ty
782 | _ -> assert false in
783 let ty = CicSubstitution.subst_vars subst ty in
784 let bo = HExtlib.map_option (CicSubstitution.subst_vars subst) bo in
785 let id = Cic.Name (UriManager.name_of_uri uri) in
786 let t = aux (n-1) (uri::acc) uris in
787 match bo,ty,mode with
788 None,ty,`Lambda -> Cic.Lambda (id,ty,t)
789 | None,ty,`Pi -> Cic.Prod (id,ty,t)
790 | Some bo,ty,_ -> Cic.LetIn (id,bo,ty,t)
795 let convert_obj_aux uri = function
796 | Cic.Constant (name, None, ty, vars, _) ->
797 let ty = cook `Pi vars ty in
798 let nty, fixpoints = convert_term uri ty in
799 assert(fixpoints = []);
800 NCic.Constant (get_relevance ty, name, None, nty, (`Provided,`Theorem,`Regular)),
802 | Cic.Constant (name, Some bo, ty, vars, _) ->
803 let bo = cook `Lambda vars bo in
804 let ty = cook `Pi vars ty in
805 let nbo, fixpoints_bo = convert_term uri bo in
806 let nty, fixpoints_ty = convert_term uri ty in
807 assert(fixpoints_ty = []);
808 NCic.Constant (get_relevance ty, name, Some nbo, nty, (`Provided,`Theorem,`Regular)),
809 fixpoints_bo @ fixpoints_ty
810 | Cic.InductiveDefinition (itl,vars,leftno,_) ->
811 let ind = let _,x,_,_ = List.hd itl in x in
814 (fun (name, _, ty, cl) (itl,acc) ->
815 let ty = cook `Pi vars ty in
816 let nty, fix_ty = convert_term uri ty in
819 (fun (name, ty) (cl,acc) ->
820 let ty = cook `Pi vars ty in
821 let nty, fix_ty = convert_term uri ty in
822 (get_relevance ty, name, nty)::cl, acc @ fix_ty)
825 (get_relevance ty, name, nty, cl)::itl, fix_ty @ fix_cl @ acc)
828 NCic.Inductive(ind, leftno + count_vars vars, itl, (`Provided, `Regular)),
831 | Cic.CurrentProof _ -> assert false
834 let convert_obj uri obj =
836 let o, fixpoints = convert_obj_aux uri obj in
837 let obj = nuri_of_ouri uri,get_height uri, [], [], o in
838 (*prerr_endline ("H(" ^ UriManager.string_of_uri uri ^ ") = " ^ string_of_int * (get_height uri));*)
844 UriManager.UriHashtbl.clear cache1
848 let convert_context uri =
849 let name_of = function Cic.Name s -> s | _ -> "_" in
852 | (Some (s, Cic.Decl t) as e) -> fun (nc,auxc,oc) ->
853 let t, _ = aux true oc auxc 0 uri t in
854 (name_of s, NCic.Decl t) :: nc,
855 Ce (lazy ((name_of s, NCic.Decl t),[])) :: auxc, e :: oc
856 | (Some (Cic.Name s, Cic.Def (t,ty)) as e) -> fun (nc,auxc,oc) ->
857 let t, _ = aux true oc auxc 0 uri t in
858 let t, _ = aux true oc auxc 0 uri ty in
859 (name_of s, NCic.Def (t,ty)) :: nc,
860 Ce (lazy ((name_of s, NCic.Def (t,ty)),[])) :: auxc, e :: oc
861 | None -> nc, , e :: oc
864 let convert_term uri ctx t =
865 aux false [] [] 0 uri t
869 let reference_of_oxuri u =
870 let t = CicUtil.term_of_uri u in
871 let t',l = convert_term (UriManager.uri_of_string "cic:/dummy/dummy.con") t in
873 NCic.Const nref, [] -> nref
874 | _,_ -> assert false
877 NCicCoercion.set_convert_term convert_term;;
878 Ncic2astMatcher.set_reference_of_oxuri reference_of_oxuri;;
879 NCicDisambiguate.set_reference_of_oxuri reference_of_oxuri;;
880 (* Why should we set them here?
881 NCicBlob.set_reference_of_oxuri reference_of_oxuri;;
882 NCicProof.set_reference_of_oxuri reference_of_oxuri;;