(let rec f = function 0 -> [] | n -> true :: f (n-1) in f j) bos
;;
-let debruijn uri number_of_types context =
+let debruijn uri number_of_types ~subst context =
+(* manca la subst! *)
let rec aux k t =
match t with
- | C.Meta (i,(s,C.Ctx l)) ->
- let l1 = HExtlib.sharing_map (aux (k-s)) l in
- if l1 == l then t else C.Meta (i,(s,C.Ctx l1))
- | C.Meta _ -> t
+ | C.Meta (i,(s,l)) ->
+ (try
+ let _,_,term,_ = U.lookup_subst i subst in
+ let ts = S.subst_meta (0,l) term in
+ let ts' = aux (k-s) ts in
+ if ts == ts' then t else ts'
+ with U.Subst_not_found _ ->
+ match l with
+ C.Ctx l ->
+ let l1 = HExtlib.sharing_map (aux (k-s)) l in
+ if l1 == l then t else C.Meta (i,(s,C.Ctx l1))
+ | _ -> t)
| C.Const (Ref.Ref (uri1,(Ref.Fix (no,_,_) | Ref.CoFix no)))
| C.Const (Ref.Ref (uri1,Ref.Ind (_,no,_))) when NUri.eq uri uri1 ->
C.Rel (k + number_of_types - no)
| _ -> assert false
in
context_dcl,
- List.map (fun (_,id,ty) -> id, debruijn r_uri r_len context ty) cl,
+ List.map (fun (_,id,ty) -> id, debruijn r_uri r_len ~subst context ty) cl,
len, len + r_len
;;
perform substitution only if DoesOccur is raised *)
let _,_,term,_ = U.lookup_subst mno subst in
aux (k-s) () (S.subst_meta (0,l) term)
- with U.Subst_not_found _ -> match l with
+ with U.Subst_not_found _ -> () (*match l with
| C.Irl len -> if not (n+k >= s+len || s > nn+k) then raise DoesOccur
- | C.Ctx lc -> List.iter (aux (k-s) ()) lc)
+ | C.Ctx lc -> List.iter (aux (k-s) ()) lc*))
| t -> U.fold (fun _ k -> k + 1) k aux () t
in
try aux 0 () t; true
let dummy = C.Sort C.Prop in
(*CSC: to be moved in cicSubstitution? *)
let rec subst_inductive_type_with_dummy _ = function
+ | C.Meta (_,(_,C.Irl _)) as x -> x
+ | C.Meta (i,(lift,C.Ctx ls)) ->
+ C.Meta (i,(lift,C.Ctx
+ (List.map (subst_inductive_type_with_dummy ()) ls)))
| C.Const (Ref.Ref (uri',Ref.Ind (true,0,_))) when NUri.eq uri' uri -> dummy
| C.Appl ((C.Const (Ref.Ref (uri',Ref.Ind (true,0,lno))))::tl)
when NUri.eq uri' uri ->
let rec aux context n nn te =
match R.whd ~subst context te with
| t when t = dummy -> true
+ | C.Meta (i,lc) ->
+ (try
+ let _,_,term,_ = U.lookup_subst i subst in
+ let t = S.subst_meta lc term in
+ weakly_positive ~subst context n nn uri indparamsno posuri t
+ with U.Subst_not_found _ -> true)
| C.Appl (te::rargs) when te = dummy ->
List.for_all (does_not_occur ~subst context n nn) rargs
| C.Prod (name,source,dest) when
and strictly_positive ~subst context n nn indparamsno posuri te =
match R.whd ~subst context te with
| t when does_not_occur ~subst context n nn t -> true
+ | C.Meta (i,lc) ->
+ (try
+ let _,_,term,_ = U.lookup_subst i subst in
+ let t = S.subst_meta lc term in
+ strictly_positive ~subst context n nn indparamsno posuri t
+ with U.Subst_not_found _ -> true)
| C.Rel _ when indparamsno = 0 -> true
| C.Appl ((C.Rel m)::tl) as reduct when m > n && m <= nn ->
check_homogeneous_call ~subst context indparamsno n posuri reduct tl;
with Failure _ ->
raise (TypeCheckerFailure (lazy ("unbound variable " ^ string_of_int n
^" under: " ^ NCicPp.ppcontext ~metasenv ~subst context))))
- | C.Sort (C.Type [false,u]) -> C.Sort (C.Type [true, u])
- | C.Sort (C.Type _) ->
- raise (AssertFailure (lazy ("Cannot type an inferred type: "^
- NCicPp.ppterm ~subst ~metasenv ~context t)))
- | C.Sort _ -> C.Sort (C.Type NCicEnvironment.type0)
+ | C.Sort s ->
+ (try C.Sort (NCicEnvironment.typeof_sort s)
+ with
+ | NCicEnvironment.UntypableSort msg -> raise (TypeCheckerFailure msg)
+ | NCicEnvironment.AssertFailure msg -> raise (AssertFailure msg))
| C.Implicit _ -> raise (AssertFailure (lazy "Implicit found"))
| C.Meta (n,l) as t ->
let canonical_ctx,ty =
(PP.ppterm ~subst ~metasenv ~context so)
)));
(match arity1, R.whd ~subst ((name,C.Decl so)::context) ta with
- | (C.Sort C.Type _, C.Sort _)
- | (C.Sort C.Prop, C.Sort C.Prop) -> ()
- | (C.Sort C.Prop, C.Sort C.Type _) ->
+ | C.Sort s1, C.Sort s2 ->
+ (match NCicEnvironment.allowed_sort_elimination s1 s2 with
+ | `Yes -> ()
+ | `UnitOnly ->
(* TODO: we should pass all these parameters since we
* have them already *)
let _,leftno,itl,_,i = E.get_checked_indtys r in
is_non_informative ~metasenv ~subst leftno constrty))
then
raise (TypeCheckerFailure (lazy
- ("Sort elimination not allowed")));
- | _,_ -> ())
+ ("Sort elimination not allowed"))))
+ | _ -> ())
| _,_ -> ()
in
aux
and is_non_recursive_singleton ~subst (Ref.Ref (uri,_)) iname ity cty =
let ctx = [iname, C.Decl ity] in
- let cty = debruijn uri 1 [] cty in
+ let cty = debruijn uri 1 [] ~subst cty in
let len = List.length ctx in
let rec aux ctx n nn t =
match R.whd ~subst ctx t with
match R.whd ~subst context c with
| C.Prod (n,so,de) ->
let s = typeof ~metasenv ~subst context so in
- s = C.Sort C.Prop && aux ((n,(C.Decl so))::context) de
+ (s = C.Sort C.Prop ||
+ match s with C.Sort (C.Type ((`CProp,_)::_)) -> true | _ -> false) &&
+ aux ((n,(C.Decl so))::context) de
| _ -> true in
let context',dx = NCicReduction.split_prods ~subst [] paramsno c in
aux context' dx
let k_relev =
try snd (HExtlib.split_nth leftno k_relev)
with Failure _ -> k_relev in
- let te = debruijn uri len [] te in
+ let te = debruijn uri len [] ~subst te in
let context,te = NCicReduction.split_prods ~subst tys leftno te in
let _,chopped_context_rev =
HExtlib.split_nth (List.length tys) (List.rev context) in
List.split (List.map (fun (_,name,_,ty,bo) -> (name, C.Decl ty), bo) fl)
in
let fl_len = List.length fl in
- let bos = List.map (debruijn uri fl_len context) bos in
+ let bos = List.map (debruijn uri fl_len context ~subst) bos in
let j = List.fold_left min max_int (List.map (fun (_,_,i,_,_)->i) fl) in
let ctx_len = List.length context in
(* we may look for fixed params not only up to j ... *)
1 + !h
;;
-let height_of_obj_kind uri =
+let height_of_obj_kind uri ~subst =
function
NCic.Inductive _
| NCic.Constant (_,_,None,_,_)
height_of_term
(List.fold_left
(fun l (_,_,_,ty,bo) ->
- let bo = debruijn uri iflno [] bo in
+ let bo = debruijn uri iflno [] ~subst bo in
ty::bo::l
) [] ifl)
| NCic.Constant (_,_,Some bo,ty,_) -> height_of_term [bo;ty]
let typecheck_obj (uri,height,metasenv,subst,kind) =
(*height must be checked since it is not only an optimization during reduction*)
- let iheight = height_of_obj_kind uri kind in
+ let iheight = height_of_obj_kind uri ~subst kind in
if height <> iheight then
raise (TypeCheckerFailure (lazy (Printf.sprintf
"the declared object height (%d) is not the inferred one (%d)"
let dfl, kl =
List.split (List.map2
(fun (_,_,_,_,bo) rno ->
- let dbo = debruijn uri len [] bo in
+ let dbo = debruijn uri len [] ~subst bo in
dbo, Evil rno)
fl kl)
in
projects / helm.git / blobdiff