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|
(.module:
[lux #*
[abstract
[equivalence (#+ Equivalence)]
[monad (#+ do)]]
[control
["." exception (#+ exception:)]
["<>" parser
["<.>" xml (#+ Parser)]
["<.>" text]]]
[data
["." product]
["." maybe]
["." text
["%" format]]
[format
["." xml (#+ XML)]]
[collection
["." list ("#\." functor)]]]
[math
[number
["n" nat]]]
["." time (#+ Time)
["." date (#+ Date)]
["." year]
["." month]]]
["." // #_
["#." time]
["#." snapshot (#+ Snapshot)
["#/." version (#+ Version)]]])
(type: #export Versioning
{#snapshot Snapshot
#last_updated //time.Time
#versions (List Version)})
(def: #export init
{#snapshot #//snapshot.Local
#last_updated //time.epoch
#versions (list)})
(def: #export equivalence
(Equivalence Versioning)
($_ product.equivalence
//snapshot.equivalence
//time.equivalence
(list.equivalence //snapshot/version.equivalence)
))
(template [<definition> <tag>]
[(def: <definition> xml.Tag ["" <tag>])]
[<last_updated> "lastUpdated"]
[<snapshot_versions> "snapshotVersions"]
[<versioning> "versioning"]
)
(def: format_last_updated
(-> //time.Time XML)
(|>> //time.format #xml.Text list (#xml.Node ..<last_updated> xml.attributes)))
(def: #export (format (^slots [#snapshot #last_updated #versions]))
(-> Versioning XML)
(<| (#xml.Node ..<versioning> xml.attributes)
(list (//snapshot.format snapshot)
(..format_last_updated last_updated)
(|> versions
(list\map //snapshot/version.format)
(#xml.Node ..<snapshot_versions> xml.attributes)))))
(def: (sub tag parser)
(All [a] (-> xml.Tag (Parser a) (Parser a)))
(do <>.monad
[_ (<xml>.node tag)]
(<xml>.children parser)))
(def: (text tag)
(-> xml.Tag (Parser Text))
(..sub tag <xml>.text))
(def: last_updated_parser
(Parser //time.Time)
(<text>.embed //time.parser
(..text ..<last_updated>)))
(def: #export parser
(Parser Versioning)
(<| (..sub ..<versioning>)
($_ <>.and
(<>.default #//snapshot.Local (<xml>.somewhere //snapshot.parser))
(<>.default //time.epoch (<xml>.somewhere ..last_updated_parser))
(<| (<>.default (list))
<xml>.somewhere
(..sub ..<snapshot_versions>)
(<>.some //snapshot/version.parser))
)))
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