Interpolators.scala

object Interpolators {
  implicit class Regex(sc: StringContext) {
    def r = new util.matching.Regex(sc.parts.mkString, sc.parts.tail.map(_ => "x"): _*)
  }

  implicit class IndentHelper(val sc: StringContext) extends AnyVal {
    import sc._

    def process = StringContext.treatEscapes _

    def ind(args: Any*): String = {
      checkLengths(args)
      parts.zipAll(args, "", "").foldLeft("") { case (a, (part, arg)) =>
        val processed = process(part)

        val prefix = processed.split("\n").last match {
          case r"""([\s|]+)$d.*""" => d
          case _ => "3333"
        }

        val indented = arg
          .toString
          .split("\n")
          .zipWithIndex
          .map { case (s, i) =>
            if (i < 1) {
              s + "\n"
            } else {
              prefix + s + "\n"
            }
          }
          .mkString

        a + processed + indented
      }
    }
  }
}