(* $Id: nCicRefiner.mli 9227 2008-11-21 16:00:06Z tassi $ *)
-module COT : Set.OrderedType with type t = NCic.term =
+module COT : Set.OrderedType with type t = int * NCic.term =
struct
- type t = NCic.term
+ type t = int * NCic.term
let compare = Pervasives.compare
end
let dummy = NCic.Const (NReference.reference_of_string "cic:/dummy_conv.dec");;
let pair t1 t2 = (NCic.Appl [dummy;t1;t2]) ;;
-let index_hint hdb context t1 t2 =
+let index_hint hdb context t1 t2 precedence =
assert (
(match t1 with
| NCic.Meta _ | NCic.Appl (NCic.Meta _ :: _) -> false | _ -> true)
(fun t (n,e) ->
match e with
| NCic.Decl ty -> NCic.Prod (n,ty,t)
- | _ -> assert false)
+ | NCic.Def (b,ty) -> NCic.LetIn (n,ty,b,t))
pair' context in
let src =
List.fold_left
match e with
| NCic.Decl _ ->
NCicSubstitution.subst (NCic.Meta (-1,(0,NCic.Irl 0))) t
- | _ -> assert false)
+ | NCic.Def _ ->
+ NCicSubstitution.subst (NCic.Meta (-1,(0,NCic.Irl 0))) t)
pair' context in
- DB.index hdb src data
+(*
+ prerr_endline ("INDEXING: " ^
+ NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] src ^ " |==> " ^
+ NCicPp.ppterm ~metasenv:[] ~subst:[] ~context:[] data);
+*)
+ DB.index hdb src (precedence, data)
;;
let empty_db = DB.empty ;;
+let user_db = ref empty_db ;;
+
+let add_user_provided_hint t precedence =
+ let u = UriManager.uri_of_string "cic:/foo/bar.con" in
+ let c, a, b =
+ let rec aux ctx = function
+ | NCic.Appl l ->
+ (match List.rev l with
+ | b::a::_ -> ctx, a, b
+ | _ -> assert false)
+ | NCic.Prod (n,s,t) ->
+ aux ((n, NCic.Decl s) :: ctx) t
+ | NCic.LetIn (n,ty,t,b) ->
+ aux ((n, NCic.Def (t,ty)) :: ctx) b
+ | _ -> assert false
+ in
+ aux [] (fst (OCic2NCic.convert_term u t))
+ in
+ user_db := index_hint !user_db c a b precedence
+;;
+
let db () =
- let _,_,_,x,_,_ = NCicEnvironment.get_checked_def
- (NReference.reference_of_string "cic:/matita/tests/pullback/xxx.def(0)")
+ let combine f l =
+ List.flatten
+ (let rec aux = function
+ | u1 :: tl -> List.map (f u1) tl :: aux tl
+ | [] -> []
+ in aux l)
+ in
+ let mk_hint (u1,_,_) (u2,_,_) =
+ let l = OCic2NCic.convert_obj u1
+ (fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph u1)) in
+ let r = OCic2NCic.convert_obj u2
+ (fst (CicEnvironment.get_obj CicUniv.oblivion_ugraph u2)) in
+ match List.hd l,List.hd r with
+ | (_,h1,_,_,NCic.Constant (_,_,Some l,_,_)),
+ (_,h2,_,_,NCic.Constant (_,_,Some r,_,_)) ->
+ let rec aux ctx t1 t2 =
+ match t1, t2 with
+ | NCic.Lambda (n1,s1,b1), NCic.Lambda(_,s2,b2) ->
+ if NCicReduction.are_convertible ~subst:[] ~metasenv:[] ctx s1 s2
+ then aux ((n1, NCic.Decl s1) :: ctx) b1 b2
+ else []
+ | b1,b2 ->
+ if NCicReduction.are_convertible ~subst:[] ~metasenv:[] ctx b1 b2
+ then begin
+(*
+ prerr_endline ("hint: " ^ NCicPp.ppterm ~metasenv:[] ~subst:[]
+ ~context:ctx b1 ^ " === " ^ NCicPp.ppterm ~metasenv:[]
+ ~subst:[] ~context:ctx b2);
+*)
+ let rec mk_rels =
+ function 0 -> [] | n -> NCic.Rel n :: mk_rels (n-1)
+ in
+ let n1 =
+ NCic.Appl (NCic.Const(OCic2NCic.reference_of_ouri
+ u1 (NReference.Def h1)) :: mk_rels (List.length ctx))
+ in
+ let n2 =
+ NCic.Appl (NCic.Const(OCic2NCic.reference_of_ouri
+ u2 (NReference.Def h2)) :: mk_rels (List.length ctx))
+ in
+ [ctx,b1,b2; ctx,b1,n2; ctx,n1,b2; ctx,n1,n2]
+ end else []
+ in
+ aux [] l r
+ | _ -> []
in
- let rec decontextualize ctx = function
- | NCic.Prod (n,s,t) -> decontextualize ((n,NCic.Decl s)::ctx) t
- | t -> ctx, t
+ let hints =
+ List.fold_left
+ (fun acc (_,_,l) ->
+ acc @
+ if List.length l > 1 then
+ combine mk_hint l
+ else [])
+ [] (CoercDb.to_list ())
in
- match (decontextualize [] x) with
- | ctx, NCic.Appl [_;_;a;b] -> index_hint empty_db ctx a b
- | _ -> assert false
+ List.fold_left
+ (fun db -> function
+ | (ctx,b1,b2) -> index_hint db ctx b1 b2 0)
+ !user_db (List.flatten hints)
;;
+let saturate ?(delta=0) metasenv subst context ty goal_arity =
+ assert (goal_arity >= 0);
+ let rec aux metasenv = function
+ | NCic.Prod (name,s,t) as ty ->
+ let metasenv1, arg,_ =
+ NCicMetaSubst.mk_meta ~name:name metasenv context (`WithType s) in
+ let t, metasenv1, args, pno =
+ aux metasenv1 (NCicSubstitution.subst arg t)
+ in
+ if pno + 1 = goal_arity then
+ ty, metasenv, [], goal_arity+1
+ else
+ t, metasenv1, arg::args, pno+1
+ | ty ->
+ match NCicReduction.whd ~subst context ty ~delta with
+ | NCic.Prod _ as ty -> aux metasenv ty
+ | _ -> ty, metasenv, [], 0 (* differs from the other impl in this line*)
+ in
+ let res, newmetasenv, arguments, _ = aux metasenv ty in
+ res, newmetasenv, arguments
+;;
let look_for_hint hdb metasenv subst context t1 t2 =
(*
let candidates1 = DB.retrieve_unifiables hdb (pair t1 t2) in
let candidates2 = DB.retrieve_unifiables hdb (pair t2 t1) in
let candidates1 =
- List.map (fun ty ->
- true,NCicMetaSubst.saturate ~delta:max_int metasenv subst context ty 0)
+ List.map (fun (prec,ty) ->
+ prec,true,saturate ~delta:max_int metasenv subst context ty 0)
(HintSet.elements candidates1)
in
let candidates2 =
- List.map (fun ty ->
- false,NCicMetaSubst.saturate ~delta:max_int metasenv subst context ty 0)
+ List.map (fun (prec,ty) ->
+ prec,false,saturate ~delta:max_int metasenv subst context ty 0)
(HintSet.elements candidates2)
in
+ let rc =
+ List.map
+ (fun (p,b,(t,m,_)) ->
+ let rec aux () (m,l as acc) = function
+ | NCic.Meta _ as t -> acc, t
+ | NCic.LetIn (name,ty,bo,t) ->
+ let m,i,_=NCicMetaSubst.mk_meta ~name m context (`WithType ty)in
+ let t = NCicSubstitution.subst i t in
+ aux () (m, (i,bo)::l) t
+ | t -> NCicUntrusted.map_term_fold_a (fun _ () -> ()) () aux acc t
+ in
+ let (m,l), t = aux () (m,[]) t in
+ p,b,(t,m,l))
+ (candidates1 @ candidates2)
+ in
+ let rc =
List.map
(function
- | (true,(NCic.Appl [_; t1; t2],metasenv,_)) -> metasenv, t1, t2
- | (false,(NCic.Appl [_; t1; t2],metasenv,_)) -> metasenv, t2, t1
+ | (prec,true,(NCic.Appl [_; t1; t2],metasenv,l))-> prec,metasenv,(t1,t2),l
+ | (prec,false,(NCic.Appl [_; t1; t2],metasenv,l))-> prec,metasenv,(t2,t1),l
| _ -> assert false)
- (candidates1 @ candidates2)
+ rc
+ in
+ let rc =
+ List.sort (fun (x,_,_,_) (y,_,_,_) -> Pervasives.compare x y) rc
+ in
+ let rc = List.map (fun (_,x,y,z) -> x,y,z) rc in
+(*
+ prerr_endline "Hints:";
+ List.iter
+ (fun (metasenv, (t1, t2), premises) ->
+ prerr_endline
+ ("\t" ^ String.concat "; "
+ (List.map (fun (a,b) ->
+ NCicPp.ppterm ~margin:max_int ~metasenv ~subst ~context a ^
+ " =?= "^
+ NCicPp.ppterm ~margin:max_int ~metasenv ~subst ~context b)
+ premises) ^
+ " ==> "^
+ NCicPp.ppterm ~margin:max_int ~metasenv ~subst ~context t1 ^
+ " = "^NCicPp.ppterm ~margin:max_int ~metasenv ~subst ~context t2))
+ rc;
+*)
+ rc
;;
projects / helm.git / blobdiff