... This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
... If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.

(.require
 [library
  [lux (.except)
   [abstract
    [equivalence (.only Equivalence)]
    [monad (.only do)]]
   [control
    ["<>" parser]]
   [data
    ["[0]" text
     ["%" \\format]
     ["<[1]>" \\parser]]
    [format
     ["[0]" xml (.only XML)
      ["<[1]>" \\parser (.only Parser)]]]]
   [math
    [number
     ["[0]" nat]]]]])

(type .public Build
  Nat)

(def .public equivalence
  (Equivalence Build)
  nat.equivalence)

(def tag
  xml.Tag
  ["" "buildNumber"])

(def .public format
  (-> Build XML)
  (|>> %.nat
       {xml.#Text}
       list
       {xml.#Node ..tag xml.attributes}))

(def .public parser
  (Parser Build)
  (<| (<xml>.node ..tag)
      (<text>.then (<>.codec nat.decimal (<text>.many <text>.decimal)))
      <xml>.text))