in
(* Checks suppressed *)
CicSubstitution.lift_meta l ty
- | C.Sort s -> C.Sort C.Type (*CSC manca la gestione degli universi!!! *)
+ | C.Sort (C.Type t) -> (* TASSI: CONSTRAINT *)
+ let t' = CicUniv.fresh() in
+ if not (CicUniv.add_gt t' t ) then
+ assert false (* t' is fresh! an error in CicUniv *)
+ else
+ C.Sort (C.Type t')
+ | C.Sort _ -> C.Sort (C.Type (CicUniv.fresh())) (* TASSI: CONSTRAINT *)
| C.Implicit _ -> raise (Impossible 21)
| C.Cast (te,ty) ->
(* Let's visit all the subterms that will not be visited later *)
let t1' = CicReduction.whd context t1 in
let t2' = CicReduction.whd ((Some (name,C.Decl s))::context) t2 in
match (t1', t2') with
- (C.Sort s1, C.Sort s2)
- when (s2 = C.Prop or s2 = C.Set or s2 = C.CProp) -> (* different from Coq manual!!! *)
+ (C.Sort _, C.Sort s2)
+ when (s2 = C.Prop or s2 = C.Set or s2 = C.CProp) ->
+ (* different from Coq manual!!! *)
C.Sort s2
- | (C.Sort s1, C.Sort s2) -> C.Sort C.Type (*CSC manca la gestione degli universi!!! *)
+ | (C.Sort (C.Type t1), C.Sort (C.Type t2)) ->
+ (* TASSI: CONSRTAINTS: the same in cictypechecker,cicrefine *)
+ let t' = CicUniv.fresh() in
+ if not (CicUniv.add_ge t' t1) || not (CicUniv.add_ge t' t2) then
+ assert false ; (* not possible, error in CicUniv *)
+ C.Sort (C.Type t')
+ | (C.Sort _,C.Sort (C.Type t1)) ->
+ (* TASSI: CONSRTAINTS: the same in cictypechecker,cicrefine *)
+ C.Sort (C.Type t1) (* c'e' bisogno di un fresh? *)
| (C.Meta _, C.Sort _) -> t2'
| (C.Meta _, (C.Meta (_,_) as t))
| (C.Sort _, (C.Meta (_,_) as t)) when CicUtil.is_closed t ->