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## Copyright (c) Eduardo Julian. All rights reserved.
## 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 http://mozilla.org/MPL/2.0/.
(;import lux
(lux (control (monoid #as m)
(eq #as E)
(show #as S))
(codata function)))
## [Structures]
(defstruct #export Bool/Eq (E;Eq Bool)
(def (= x y)
(if x
y
(not y))))
(defstruct #export Bool/Show (S;Show Bool)
(def (show x)
(if x "true" "false")))
(do-template [<name> <unit> <op>]
[(defstruct #export <name> (m;Monoid Bool)
(def unit <unit>)
(def (++ x y)
(<op> x y)))]
[ Or/Monoid false or]
[And/Monoid true and]
)
## [Functions]
(def #export complement
(All [a] (-> (-> a Bool) (-> a Bool)))
(. not))
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