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(.module:
[library
[lux #*
[abstract
[equivalence (#+ Equivalence)]
[hash (#+ Hash)]
[order (#+ Order)]
[codec (#+ Codec)]]
[data
["." text ("#\." equivalence monoid)]
["." product]]]])
... (type: Name
... [Text Text])
(template [<name> <doc>]
[(def: .public (<name> name)
{#.doc (doc <doc>)}
(-> Name Text)
(let [[module short] name]
<name>))]
[module "The module part of a name."]
[short "The short part of a name."]
)
(def: .public hash
(Hash Name)
(product.hash text.hash text.hash))
(def: .public equivalence
(Equivalence Name)
(\ ..hash &equivalence))
(implementation: .public order
(Order Name)
(def: &equivalence ..equivalence)
(def: (< [moduleP shortP] [moduleS shortS])
(if (text\= moduleP moduleS)
(\ text.order < shortP shortS)
(\ text.order < moduleP moduleS))))
(def: separator
".")
(implementation: .public codec
(Codec Text Name)
(def: (encode [module short])
(case module
"" short
_ ($_ text\compose module ..separator short)))
(def: (decode input)
(case (text.split_all_with ..separator input)
(^ (list short))
(#.Right ["" short])
(^ (list module short))
(#.Right [module short])
_
(#.Left (text\compose "Invalid format for Name: " input)))))
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