+let n_fresh_metas metasenv context n =
+ if n = 0 then metasenv, []
+ else
+ let irl = identity_relocation_list_for_metavariable context in
+ let newmeta = new_meta metasenv in
+ let rec aux newmeta n =
+ if n = 0 then metasenv, []
+ else
+ let metasenv', l = aux (newmeta + 3) (n-1) in
+ (newmeta, context, Cic.Sort Cic.Type)::
+ (newmeta + 1, context, Cic.Meta (newmeta, irl))::
+ (newmeta + 2, context, Cic.Meta (newmeta + 1,irl))::metasenv',
+ Cic.Meta(newmeta+2,irl)::l in
+ aux newmeta n
+
+let fresh_subst metasenv context uris =
+ let irl = identity_relocation_list_for_metavariable context in
+ let newmeta = new_meta metasenv in
+ let rec aux newmeta = function
+ [] -> metasenv, []
+ | uri::tl ->
+ let metasenv', l = aux (newmeta + 3) tl in
+ (newmeta, context, Cic.Sort Cic.Type)::
+ (newmeta + 1, context, Cic.Meta (newmeta, irl))::
+ (newmeta + 2, context, Cic.Meta (newmeta + 1,irl))::metasenv',
+ (uri,Cic.Meta(newmeta+2,irl))::l in
+ aux newmeta uris
+