Add poc files

h_program-lang/refactoring_code.mli

@@ -0,0 +1,26 @@
+
+(* many refactorings can be done by spatch! used this code only as
+ * last resort
+ *)
+type refactoring_kind =
+  | AddInterface of string option (* specific class *) 
+                  * string (* the interface to add *)
+  | RemoveInterface of string option * string
+
+  | SplitMembers
+
+  (* type related *)
+  | AddReturnType of string
+  | AddTypeHintParameter of string
+  | OptionizeTypeParameter
+  | AddTypeMember of string
+
+type position = { 
+  file: Common.filename;
+  line: int;
+  col: int;
+}
+
+type refactoring = refactoring_kind * position option
+
+val load: Common.filename -> refactoring list