Module type Functors.T_LENGTH_SUB_AND_SEARCH_REV

module type T_LENGTH_SUB_AND_SEARCH_REV = sig .. end

type t 

type character 

val empty : t

val length : t -> int

val sub_exn : t ->
       index:int -> length:int -> t

val index_of_character_reverse : t ->
       ?from:int -> character -> int option

val index_of_string_reverse : ?from:int ->
       ?sub_index:int ->
       ?sub_length:int ->
       t ->
       sub:t -> int option