in
subst,metasenv,ugraph,context_terms, ty_terms
+(** 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
+ let rec aux context where =
+ if equality what where then [context,where]
+ else
+ match where with
+ | Cic.Implicit _
+ | Cic.Meta _
+ | Cic.Rel _
+ | Cic.Sort _
+ | Cic.Var _
+ | Cic.Const _
+ | Cic.MutInd _
+ | Cic.MutConstruct _ -> []
+ | Cic.Cast (te, ty) -> aux context te @ aux context ty
+ | Cic.Prod (name, s, t)
+ | Cic.Lambda (name, s, t) ->
+ aux context s @ aux (add_ctx context name (Cic.Decl s)) t
+ | Cic.LetIn (name, s, t) ->
+ aux context s @ aux (add_ctx context name (Cic.Def (s,None))) t
+ | Cic.Appl tl -> auxs context tl
+ | Cic.MutCase (_, _, out, t, pat) ->
+ aux context out @ aux context t @ auxs context pat
+ | Cic.Fix (_, funs) ->
+ let tys =
+ List.map (fun (n,_,ty,_) -> Some (Cic.Name n,(Cic.Decl ty))) funs
+ in
+ List.concat
+ (List.map
+ (fun (_, _, ty, bo) ->
+ aux context ty @ aux (tys @ context) bo)
+ funs)
+ | Cic.CoFix (_, funs) ->
+ let tys =
+ List.map (fun (n,ty,_) -> Some (Cic.Name n,(Cic.Decl ty))) funs
+ in
+ List.concat
+ (List.map
+ (fun (_, ty, bo) ->
+ aux context ty @ aux (tys @ context) bo)
+ funs)
+ and auxs context tl = (* as aux for list of terms *)
+ List.concat (List.map (fun t -> aux context t) tl)
+ in
+ 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 *)
(* which there is new a META for each hypothesis, a list of arguments for the *)