Evaluate typed queries over persistent maps

src/value.mli

@@ -0,0 +1,15 @@
+type t =
+  | VUnit
+  | VInt of int
+  | VBool of bool
+  | VString of string
+  | VTuple of t list
+  | VRecord of string * (string * t) list
+  | VCollection of t Delta_runtime.Pure_map.t
+
+val to_string : t -> string
+val collection_of_list : (int * t) list -> t Delta_runtime.Pure_map.t
+val collection_to_list : t Delta_runtime.Pure_map.t -> (int * t) list
+val equal : t -> t -> bool
+val field : t -> string -> t option
+val is_collection : t -> bool