| C.Rel _ as t -> a,t
| C.Appl [] | C.Appl [_] -> assert false
| C.Appl l as orig ->
+ let fire_beta, upto =
+ match l with C.Meta _ :: _ -> true, List.length l - 1 | _ -> false, 0
+ in
let a,l1 =
(* sharing fold? *)
List.fold_right
(fun t (a,l) -> let a,t = f k a t in a, t :: l)
l (a,[])
in
- a, if l1 == l then orig else (match l1 with
- | C.Appl l :: tl -> C.Appl (l@tl)
- | _ -> C.Appl l1)
+ a, if l1 == l then orig else
+ let t =
+ match l1 with
+ | C.Appl l :: tl -> C.Appl (l@tl)
+ | _ -> C.Appl l1
+ in
+ if fire_beta then NCicReduction.head_beta_reduce ~upto t
+ else t
| C.Prod (n,s,t) as orig ->
let a,s1 = f k a s in let a,t1 = f (g (n,C.Decl s) k) a t in
a, if t1 == t && s1 == s then orig else C.Prod (n,s1,t1)
HExtlib.list_uniq (List.sort Pervasives.compare (aux context [] term))
;;
+module NCicHash =
+ Hashtbl.Make
+ (struct
+ type t = C.term
+ let equal = (==)
+ let hash = Hashtbl.hash_param 100 1000
+ end)
+;;
+
+let mk_appl he args =
+ if args = [] then he else
+ match he with
+ | NCic.Appl l -> NCic.Appl (l@args)
+ | _ -> NCic.Appl (he::args)
+;;
+
+let map_obj_kind ?(skip_body=false) f =
+ let do_bo f x = if skip_body then x else f x in
+ function
+ NCic.Constant (relev,name,bo,ty,attrs) ->
+ NCic.Constant (relev,name,do_bo (HExtlib.map_option f) bo, f ty,attrs)
+ | NCic.Fixpoint (ind,fl,attrs) ->
+ let fl =
+ List.map
+ (function (relevance,name,recno,ty,bo) ->
+ relevance,name,recno,f ty,do_bo f bo)
+ fl
+ in
+ NCic.Fixpoint (ind,fl,attrs)
+ | NCic.Inductive (is_ind,lno,itl,attrs) ->
+ let itl =
+ List.map
+ (fun (relevance,name,ty,cl) ->
+ let cl =
+ List.map (fun (relevance, name, ty) ->
+ relevance, name, f ty)
+ cl
+ in
+ relevance, name, f ty, cl)
+ itl
+ in
+ NCic.Inductive (is_ind,lno,itl,attrs)
+;;
+
+exception Occurr;;
+
+let clean_or_fix_dependent_abstrations ctx t =
+ let occurrs_1 t =
+ let rec aux n _ = function
+ | NCic.Meta _ -> ()
+ | NCic.Rel i when i = n + 1 -> raise Occurr
+ | t -> NCicUtils.fold (fun _ k -> k + 1) n aux () t
+ in
+ try aux 0 () t; false
+ with Occurr -> true
+ in
+ let fresh ctx name =
+ if not (List.mem name ctx) then name
+ else
+ let rec aux i =
+ let attempt = name ^ string_of_int i in
+ if List.mem attempt ctx then aux (i+1)
+ else attempt
+ in
+ aux 0
+ in
+ let rec aux ctx = function
+ | NCic.Meta _ as t -> t
+ | NCic.Prod (name,s,t) when name.[0] = '#' && occurrs_1 t ->
+ let name = fresh ctx (String.sub name 1 (String.length name-1)) in
+ NCic.Prod (name,aux ctx s, aux (name::ctx) t)
+ | NCic.Prod (name,s,t) when name.[0] = '#' && not (occurrs_1 t) ->
+ NCic.Prod ("_",aux ctx s,aux ("_"::ctx) t)
+ | NCic.Prod ("_",s,t) -> NCic.Prod("_",aux ctx s,aux ("_"::ctx) t)
+ | NCic.Prod (name,s,t) when name.[0] <> '_' && not (occurrs_1 t) ->
+ let name = fresh ctx ("_"^name) in
+ NCic.Prod (name, aux ctx s, aux (name::ctx) t)
+ | NCic.Prod (name,s,t) when List.mem name ctx ->
+ let name = fresh ctx name in
+ NCic.Prod (name, aux ctx s, aux (name::ctx) t)
+ | NCic.Lambda (name,s,t) when List.mem name ctx ->
+ let name = fresh ctx name in
+ NCic.Lambda (name, aux ctx s, aux (name::ctx) t)
+ | t -> NCicUtils.map (fun (e,_) ctx -> e::ctx) ctx aux t
+ in
+ aux (List.map fst ctx) t
+;;
+
+let apply_subst subst context t =
+ let rec apply_subst subst () =
+ function
+ NCic.Meta (i,lc) ->
+ (try
+ let _,_,t,_ = NCicUtils.lookup_subst i subst in
+ let t = NCicSubstitution.subst_meta lc t in
+ apply_subst subst () t
+ with
+ Not_found ->
+ match lc with
+ _,NCic.Irl _ -> NCic.Meta (i,lc)
+ | n,NCic.Ctx l ->
+ NCic.Meta
+ (i,(0,NCic.Ctx
+ (List.map (fun t ->
+ apply_subst subst () (NCicSubstitution.lift n t)) l))))
+ | t -> NCicUtils.map (fun _ () -> ()) () (apply_subst subst) t
+ in
+ clean_or_fix_dependent_abstrations context (apply_subst subst () t)
+;;
+
+let apply_subst_context subst context =
+ let rec aux c = function
+ | [] -> []
+ | (name,NCic.Decl t as e) :: tl ->
+ (name, NCic.Decl (apply_subst subst c t)) :: aux (e::c) tl
+ | (name,NCic.Def (t1,t2) as e) :: tl ->
+ (name, NCic.Def (apply_subst subst c t1,apply_subst subst c t2)) ::
+ aux (e::c) tl
+ in
+ List.rev (aux [] (List.rev context))
+;;
+
+let rec apply_subst_metasenv subst = function
+ | [] -> []
+ | (i,_) :: _ when List.mem_assoc i subst -> assert false
+ | (i,(name,ctx,ty)) :: tl ->
+ (i,(name,apply_subst_context subst ctx,apply_subst subst ctx ty)) ::
+ apply_subst_metasenv subst tl
+;;
+
+let height_of_term tl =
+ let h = ref 0 in
+ let get_height (NReference.Ref (uri,_)) =
+ let _,height,_,_,_ = NCicEnvironment.get_checked_obj uri in
+ height in
+ let rec aux =
+ function
+ NCic.Meta (_,(_,NCic.Ctx l)) -> List.iter aux l
+ | NCic.Meta _ -> ()
+ | NCic.Rel _
+ | NCic.Sort _ -> ()
+ | NCic.Implicit _ -> assert false
+ | NCic.Const nref -> h := max !h (get_height nref)
+ | NCic.Prod (_,t1,t2)
+ | NCic.Lambda (_,t1,t2) -> aux t1; aux t2
+ | NCic.LetIn (_,s,ty,t) -> aux s; aux ty; aux t
+ | NCic.Appl l -> List.iter aux l
+ | NCic.Match (_,outty,t,pl) -> aux outty; aux t; List.iter aux pl
+ in
+ List.iter aux tl;
+ 1 + !h
+;;
+
+let height_of_obj_kind uri =
+ function
+ NCic.Inductive _
+ | NCic.Constant (_,_,None,_,_)
+ | NCic.Fixpoint (false,_,_) -> 0
+ | NCic.Fixpoint (true,ifl,_) ->
+ let iflno = List.length ifl in
+ height_of_term
+ (List.fold_left
+ (fun l (_,_,_,ty,bo) ->
+ let bo = NCicTypeChecker.debruijn uri iflno [] bo in
+ ty::bo::l
+ ) [] ifl)
+ | NCic.Constant (_,_,Some bo,ty,_) -> height_of_term [bo;ty]
+;;
projects / helm.git / blobdiff