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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)]
[monoid (.only Monoid)]
["[0]" monad (.only do)]]
[control
["[0]" try (.only Try)]
["[0]" exception (.only Exception)]]
[data
["[0]" text (.only)
["%" \\format (.only format)]]
[collection
["[0]" dictionary (.only Dictionary)]
["[0]" set (.only Set)]
["[0]" list (.use "[1]#[0]" mix)]]]]]
["[0]" //
["[1]" profile (.only Name Profile)]])
(def .public file
"project.lux")
(type .public Project
(Dictionary Name Profile))
(def .public (project name profile)
(-> Name Profile Project)
(dictionary.of_list text.hash (list [name profile])))
(def .public equivalence
(Equivalence Project)
(dictionary.equivalence //.equivalence))
(def .public monoid
(Monoid Project)
(implementation
(def identity
(dictionary.empty text.hash))
(def composite
(dictionary.composite_with (of //.monoid composite)))))
(exception.def .public (unknown_profile name)
(Exception Name)
(exception.report
(list ["Name" (%.text name)])))
(exception.def .public (circular_dependency [dependee dependent])
(Exception [Name Name])
(exception.report
(list ["Dependent" (%.text dependent)]
["Dependee" (%.text dependee)])))
(def (profile' lineage project name)
(-> (Set Name) Project Name (Try Profile))
(when (dictionary.value name project)
{.#Some profile}
(when (list.example (set.member? lineage)
(the //.#parents profile))
{.#Some ouroboros}
(exception.except ..circular_dependency [ouroboros name])
{.#None}
(do [! try.monad]
[parents (monad.each ! (profile' (set.has name lineage) project)
(the //.#parents profile))]
(in (list#mix (function (_ parent child)
(of //.monoid composite child parent))
(has //.#parents (list) profile)
parents))))
{.#None}
(exception.except ..unknown_profile [name])))
(def .public profile
(-> Project Name (Try Profile))
(..profile' (set.empty text.hash)))
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