Prints Json litterals for given JsValue

gistfile1.txt

  def print(json: JsValue): String = {

    json match {
      case JsObject(values) =>
        val contents =
          values.map {
            case (k, v) => s""""$k" -> ${print(v)}"""
          }.mkString(", ")
        s"Json.obj($contents)"
      case JsArray(values) =>
        val contents = values.map(print).mkString(", ")
        s"Json.arr($contents)"
      case JsString(value) =>
        "\"" + value.replaceAll("\"", """\\"""").replaceAll("""\\n""", """\\\\n""") + "\""
      case JsBoolean(value) => value.toString
      case JsNumber(value) =>
        val suffix = if (value.isValidInt) "" else "L"
        value.toString + suffix
      case JsNull => "JsNull"
      case j: JsValue => j.as[String]
    }
  }