Parser.scala

  def finishP = "finish" ~> "{" ~> ("ambient"|"difuse"|"phong"|"phong_size") ~ valueP <~ "}" ^^
                          {
                           case "ambient"     ~ color => ("ambient"     ,color)
                           case "difuse"      ~ color => ("difuse"      ,color)
                           case "phong"       ~ color => ("phong"       ,color)
                           case "phong_color" ~ color => ("phong_color" ,color)
                           case "size"        ~ color => ("size"        ,color)
                          }

  def manyFinish: Parser[(String,Double)] = finishP*