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(.module:
[lux #*
[data
["." text]
[collection
["." list]
["." row (#+ Row)]
["." dictionary (#+ Dictionary)]]]
[type
abstract]])
(type: #export ID Nat)
(type: Artifact
{#id ID
#name (Maybe Text)})
(abstract: #export Registry
{}
{#artifacts (Row Artifact)
#resolver (Dictionary Text ID)}
(def: #export empty
Registry
(:abstraction {#artifacts row.empty
#resolver (dictionary.new text.hash)}))
(def: next
(-> Registry ID)
(|>> :representation (get@ #artifacts) row.size))
(def: #export (resource registry)
(-> Registry [ID Registry])
(let [id (..next registry)]
[id
(|> registry
:representation
(update@ #artifacts (row.add {#id id
#name #.None}))
:abstraction)]))
(def: #export (definition name registry)
(-> Text Registry [ID Registry])
(let [id (..next registry)]
[id
(|> registry
:representation
(update@ #artifacts (row.add {#id id
#name (#.Some name)}))
(update@ #resolver (dictionary.put name id))
:abstraction)]))
(def: #export (definitions registry)
(-> Registry (List Text))
(|> registry
:representation
(get@ #artifacts)
row.to-list
(list.search-all (get@ #name))))
(def: #export (remember name registry)
(-> Text Registry (Maybe ID))
(|> (:representation registry)
(get@ #resolver)
(dictionary.get name)))
)
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