in
subst,metasenv,ugraph,context_terms, ty_terms
-let locate_in_term what ~where =
+(** locate_in_term equality what where context
+* [what] must match a subterm of [where] according to [equality]
+* It returns the matched terms together with their contexts in [where]
+* [equality] defaults to physical equality
+* [context] must be the context of [where]
+*)
+let locate_in_term ?(equality=(==))what ~where context =
let add_ctx context name entry =
- (Some (name, entry)) :: context
- in
+ (Some (name, entry)) :: context in
let rec aux context where =
- if what == where then context
+ if equality what where then [context,where]
else
match where with
| Cic.Implicit _
and auxs context tl = (* as aux for list of terms *)
List.concat (List.map (fun t -> aux context t) tl)
in
- aux [] where
+ aux context where
+(** locate_in_term equality what where context
+* [what] must match a subterm of [where] according to [equality]
+* It returns the matched terms together with their contexts in [where]
+* [equality] defaults to physical equality
+* [context] must be the context of [where]
+*)
+let locate_in_conjecture ?(equality=(==)) what (_,context,ty) =
+ let context,res =
+ List.fold_right
+ (fun entry (context,res) ->
+ match entry with
+ None -> entry::context, res
+ | Some (_, Cic.Decl ty) ->
+ let res = res @ locate_in_term what ~where:ty context in
+ let context' = entry::context in
+ context',res
+ | Some (_, Cic.Def (bo,ty)) ->
+ let res = res @ locate_in_term what ~where:bo context in
+ let res =
+ match ty with
+ None -> res
+ | Some ty ->
+ res @ locate_in_term what ~where:ty context in
+ let context' = entry::context in
+ context',res
+ ) context ([],[])
+ in
+ res @ locate_in_term what ~where:ty context
(* saturate_term newmeta metasenv context ty *)
(* Given a type [ty] (a backbone), it returns its head and a new metasenv in *)