val simple_decode : 'a encoding -> string -> 'a optionval simple_encode : 'a encoding -> 'a -> stringval register_encoding :
prefix:string ->
length:int ->
to_raw:('a -> string) ->
of_raw:(string -> 'a option) ->
wrap:('a -> data) ->
'a encodingval check_encoded_prefix : 'a encoding -> string -> int -> unitval decode : string -> data option