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... 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)]
[hash (.only Hash)]
[order (.only Order)]
[codec (.only Codec)]]
[data
["[0]" text (.use "[1]#[0]" equivalence monoid)]
["[0]" product]]]])
... (type Symbol
... [Text Text])
(with_template [<name>]
[(def .public (<name> [module short])
(-> Symbol
Text)
<name>)]
[module]
[short]
)
(def .public hash
(Hash Symbol)
(product.hash text.hash text.hash))
(def .public equivalence
(Equivalence Symbol)
(of ..hash equivalence))
(def .public order
(Order Symbol)
(implementation
(def equivalence ..equivalence)
(def (< [moduleP shortP] [moduleS shortS])
(if (text#= moduleP moduleS)
(of text.order < shortP shortS)
(of text.order < moduleP moduleS)))))
(def .public separator
".")
(def .public codec
(Codec Text Symbol)
(implementation
(def (encoded [module short])
(when module
""
short
_
(all text#composite module ..separator short)))
(def (decoded input)
(when (text.all_split_by ..separator input)
(list short)
{.#Right ["" short]}
(list module short)
{.#Right [module short]}
_
{.#Left (text#composite "Invalid format for Symbol: " input)}))))
(def .public (relative_codec expected)
(-> Text
(Codec Text Symbol))
(implementation
(def (encoded [module short])
(when module
""
short
.prelude
(all text#composite ..separator short)
_
(all text#composite
(if (text#= expected module)
..separator
module)
..separator short)))
(def (decoded input)
(when (text.all_split_by ..separator input)
(list short)
{.#Right ["" short]}
(list "" short)
{.#Right [.prelude short]}
(list module short)
{.#Right [module short]}
(list "" "" short)
{.#Right [expected short]}
_
{.#Left (text#composite "Invalid format for Symbol: " input)}))))
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