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|
(.module:
[library
[lux {"-" [Name Type]}
[abstract
[equivalence {"+" [Equivalence]}]
[monad {"+" [do]}]]
[control
["<>" parser
["<.>" xml {"+" [Parser]}]
["<.>" text]]]
[data
["." sum]
[format
["." xml {"+" [XML]}]]]]]
["." / "_"
["#." stamp {"+" [Stamp]}]])
(type: .public Snapshot
(Variant
#Local
(#Remote Stamp)))
(implementation: any_equivalence
(Equivalence Any)
(def: (= _ _)
true))
(def: .public equivalence
(Equivalence Snapshot)
($_ sum.equivalence
..any_equivalence
/stamp.equivalence
))
(template [<definition> <tag>]
[(def: <definition> xml.Tag ["" <tag>])]
[<local_copy> "localCopy"]
[<snapshot> "snapshot"]
)
(def: local_copy_value
"true")
(def: local_copy_format
XML
(#xml.Node <local_copy>
xml.attributes
(list (#xml.Text ..local_copy_value))))
(def: local_copy_parser
(Parser Any)
(<| (<xml>.node ..<local_copy>)
(<text>.then (<text>.this ..local_copy_value))
<xml>.text))
(def: .public (format snapshot)
(-> Snapshot XML)
(<| (#xml.Node ..<snapshot> xml.attributes)
(case snapshot
#Local
(list ..local_copy_format)
(#Remote stamp)
(/stamp.format stamp))))
(def: .public parser
(Parser Snapshot)
(<| (<xml>.node <snapshot>)
(<>.or ..local_copy_parser
/stamp.parser)))
|
