argonaut_read.scala

//reads input string, checks if its json, and if it is returns an encoded object of the first type that parses correctly.
def Read[SomeType](input: String): Option[SomeType] = {
  //maybe I need to loop over every defined codec I've generated? How woud I do that?
  val decoder: DecodeJson[SomeType] = DecodeJson.of[SomeType]
  JsonParser.parse(input).toOption match {
    case None => {
      throw new AlgorithmException(s"input failed to parse.")
    }
    case Some(json: Json) => {
      val decoded = decoder.decodeJson(json).toOption
      decoded
    }
  }
}