in
try aux () () t; false with Found -> true
in
- let unify_list ~alpha in_scope =
+ let unify_list in_scope =
match l with
| _, NCic.Irl _ -> fun _ _ _ _ _ -> None
| shift, NCic.Ctx l -> fun metasenv subst context k t ->
(fun (li,flexible) i ->
if flexible || i < in_scope then None else
let li = NCicSubstitution.lift (k+shift) li in
- if alpha then
- if NCicReduction.alpha_eq metasenv subst context li t then
- Some ((metasenv,subst), NCic.Rel (i+1+k))
- else
- None
- else
- match unify metasenv subst context li t with
- | Some (metasenv,subst) ->
- Some ((metasenv, subst), NCic.Rel (i+1+k))
- | None -> None)
+ match unify metasenv subst context li t with
+ | Some (metasenv,subst) ->
+ Some ((metasenv, subst), NCic.Rel (i+1+k))
+ | None -> None)
lb
in
let rec aux (context,k,in_scope) (metasenv, subst as ms) t =
- match unify_list ~alpha:true in_scope metasenv subst context k t with
+ match unify_list in_scope metasenv subst context k t with
| Some x -> x
| None ->
- try
match t with
| NCic.Rel n as t when n <= k -> ms, t
| NCic.Rel n ->
| t ->
NCicUntrusted.map_term_fold_a
(fun e (c,k,s) -> (e::c,k+1,s)) (context,k,in_scope) aux ms t
- with NotInTheList ->
- match unify_list ~alpha:false in_scope metasenv subst context k t with
- | Some x -> x
- | None -> raise NotInTheList
in
try aux (context,0,0) (metasenv,subst) t
with NotInTheList ->
let lc = NCicUtils.expand_local_context lc in
let l = List.map (NCicSubstitution.lift shift) lc in
if
- List.exists (fun t-> NCicUntrusted.metas_of_term subst context t = []) l
+ List.exists (fun t-> NCicUntrusted.metas_of_term subst context t <> [])l
then
raise (Uncertain msg)
else