class Table(var rows: List[Row] = Nil) {
  def add(r: Row) = { rows = r :: rows }
}
class Row(var cells: List[Cell] = Nil) {
  def add(c: Cell) = { cells = c :: cells }
}
case class Cell(content: String)

object test {
  def table(init: implicit Table => Unit) = {
    implicit val t = new Table()
    init
    t
  }

  def row(init: implicit Row => Unit)(implicit t: Table) = {
    implicit val r = new Row()
    init
    t.add(r)
  }

  def cell(str: String)(implicit r: Row) =
    r.add(Cell(str))

  val doc = table {
    row {
      cell("test")
    }

    table {
      row {
        cell("test2")
      }
    }
  }
}