val window_size : int

type t

val create : unit -> t

val add_byte : t -> int -> unit

val add_bytes : t -> bytes -> int -> int -> unit

val get_byte_at_distance : t -> int -> int

val current_size : t -> int

val total_processed : t -> int64

val extract_slice : t -> int -> int -> bytes

val match_length_at_distance : t -> int -> bytes -> int -> int -> int