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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
(../eq #as E))
## [Signatures]
(defsig #export (Ord a)
(: (E;Eq a)
_eq)
(do-template [<name>]
[(: (-> a a Bool) <name>)]
[<] [<=] [>] [>=]))
## [Constructors]
(def #export (ord$ eq < >)
(All [a]
(-> (E;Eq a) (-> a a Bool) (-> a a Bool) (Ord a)))
(struct
(def _eq eq)
(def < <)
(def (<= x y)
(or (< x y)
(:: eq (E;= x y))))
(def > >)
(def (>= x y)
(or (> x y)
(:: eq (E;= x y))))))
## [Functions]
(do-template [<name> <op>]
[(def #export (<name> ord x y)
(All [a]
(-> (Ord a) a a a))
(if (:: ord (<op> x y)) x y))]
[max ;;>]
[min ;;<])
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