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(.using
[library
[lux (.except)
[abstract
["[0]" equivalence (.only Equivalence)]
["[0]" monoid (.only Monoid)]]
[control
["[0]" try]
["<>" parser (.only)
["<[0]>" code]]]
[data
[format
["[0]F" binary (.only Writer)]]]
[macro (.only with_symbols)
[syntax (.only syntax)]
["[0]" code]]
[math
["[0]" number (.only hex)
["[0]" i64]]]
[type
[primitive (.except)]]]]
["[0]" //
[encoding
["[1][0]" unsigned]]])
(primitive: .public (Modifier of)
//unsigned.U2
(def: .public code
(-> (Modifier Any) //unsigned.U2)
(|>> representation))
(def: .public equivalence
(All (_ of) (Equivalence (Modifier of)))
(implementation
(def: (= reference sample)
(at //unsigned.equivalence =
(representation reference)
(representation sample)))))
(def: !wrap
(template (_ value)
[(|> value
//unsigned.u2
try.trusted
abstraction)]))
(def: !unwrap
(template (_ value)
[(|> value
representation
//unsigned.value)]))
(def: .public (has? sub super)
(All (_ of) (-> (Modifier of) (Modifier of) Bit))
(let [sub (!unwrap sub)]
(|> (!unwrap super)
(i64.and sub)
(at i64.equivalence = sub))))
(def: .public monoid
(All (_ of) (Monoid (Modifier of)))
(implementation
(def: identity
(!wrap (hex "0000")))
(def: (composite left right)
(!wrap (i64.or (!unwrap left) (!unwrap right))))))
(def: .public empty
Modifier
(at ..monoid identity))
(def: .public writer
(All (_ of) (Writer (Modifier of)))
(|>> representation //unsigned.writer/2))
(def: modifier
(-> Nat Modifier)
(|>> !wrap))
)
(def: .public modifiers:
(syntax (_ [ofT <code>.any
options (<>.many <code>.any)])
(with_symbols [g!modifier g!code]
(in (list (` (with_template [(~ g!code) (~ g!modifier)]
[(def: (~' .public) (~ g!modifier)
(..Modifier (~ ofT))
((~! ..modifier) ((~! number.hex) (~ g!code))))]
(~+ options))))))))
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