Module Pa_deriving_Json

module Pa_deriving_Json: sig .. end
Deriving_json syntax extension (based on the deriving library).
See also


type typ = .. deriving (Json) with generate
module Json_typ : sig
  type a = typ
  val to_string : a -> string
  val from_string : string -> a
  ...
end

val register_predefs : Pa_deriving_common.Type.qname -> Pa_deriving_common.Type.qname -> unit
register_predefs typeA typeB tells the syntax extension that typeB is an alias for typeA. The extension syntax will then use the deriving_json implementation of typeB in place of typeA's one.

Important note: TypeB does NOT HAVE TO actually exists.

In practive, you may need to use this in the following cases: