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|
(.require
[library
[lux (.except)
[abstract
["[0]" equivalence (.only Equivalence)]]
[control
["[0]" maybe]
["[0]" try (.only Try)]]
[data
[text
["%" \\format]]
[binary
[\\format (.only Format)]]]
[meta
[type
["[0]" nominal (.except def)]]]]]
["[0]" /////
[encoding
["[1][0]" unsigned (.only U2)]]])
(nominal.def .public Stack
U2
(with_template [<frames> <name>]
[(def .public <name>
Stack
(|> <frames> /////unsigned.u2 maybe.trusted abstraction))]
[0 empty]
[1 catch]
)
(def .public equivalence
(Equivalence Stack)
(of equivalence.functor each
(|>> representation)
/////unsigned.equivalence))
(def .public format
(Format Stack)
(|>> representation /////unsigned.format/2))
(def stack
(-> U2 Stack)
(|>> abstraction))
(with_template [<op> <name>]
[(def .public (<name> amount)
(-> U2 (-> Stack (Try Stack)))
(|>> representation
(<op> amount)
(of try.functor each ..stack)))]
[/////unsigned.+/2 push]
[/////unsigned.-/2 pop]
)
(def .public (max left right)
(-> Stack Stack Stack)
(abstraction
(/////unsigned.max/2 (representation left)
(representation right))))
(def .public text
(%.Format Stack)
(|>> representation /////unsigned.value %.nat))
)
(def .public length
/////unsigned.bytes/2)
|
