(.module:
  [library
   [lux "*"
    ["[0]" time]
    [abstract
     [monad {"+" [do]}]]
    [control
     ["<>" parser
      ["<[0]>" text {"+" [Parser]}]]]
    [data
     [text
      ["%" format]]]
    [math
     [number
      ["n" nat]]]]]
  ["[0]" // "_"
   ["[1]" date]])

(type: .public Time
  time.Time)

(def: .public (format value)
  (%.Format Time)
  (let [(^slots [#time.hour #time.minute #time.second]) (time.clock value)]
    (%.format (//.pad hour)
              (//.pad minute)
              (//.pad second))))

(def: .public parser
  (<text>.Parser Time)
  (do <>.monad
    [hour (<>.codec n.decimal (<text>.exactly 2 <text>.decimal))
     minute (<>.codec n.decimal (<text>.exactly 2 <text>.decimal))
     second (<>.codec n.decimal (<text>.exactly 2 <text>.decimal))]
    (<>.lifted (time.time
                [#time.hour hour
                 #time.minute minute
                 #time.second second
                 #time.milli_second 0]))))