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|
(.module:
[library
[lux #*
[abstract
["." equivalence (#+ Equivalence)]
["." monoid (#+ Monoid)]]
[control
["." try]
["<>" parser
["<c>" code]]]
[data
[format
[".F" binary (#+ Writer)]]]
[macro (#+ with_gensyms)
[syntax (#+ syntax:)]
["." code]]
[math
["." number (#+ hex)
["." i64]]]
[type
abstract]]]
["." // #_
[encoding
["#." unsigned]]])
(abstract: .public (Modifier of)
{}
//unsigned.U2
(def: .public code
(-> (Modifier Any) //unsigned.U2)
(|>> :representation))
(implementation: .public equivalence
(All [of] (Equivalence (Modifier of)))
(def: (= reference sample)
(\ //unsigned.equivalence =
(:representation reference)
(:representation sample))))
(template: (!wrap value)
[(|> value
//unsigned.u2
try.assumed
:abstraction)])
(template: (!unwrap 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)
(\ i64.equivalence = sub))))
(implementation: .public monoid
(All [of] (Monoid (Modifier of)))
(def: identity
(!wrap (hex "0000")))
(def: (compose left right)
(!wrap (i64.or (!unwrap left) (!unwrap right)))))
(def: .public empty
Modifier
(\ ..monoid identity))
(def: .public writer
(All [of] (Writer (Modifier of)))
(|>> :representation //unsigned.writer/2))
(def: modifier
(-> Nat Modifier)
(|>> !wrap))
)
(syntax: .public (modifiers: ofT {options (<>.many <c>.any)})
(with_gensyms [g!modifier g!code]
(in (list (` (template [(~ g!code) (~ g!modifier)]
[(def: (~' .public) (~ g!modifier)
(..Modifier (~ ofT))
((~! ..modifier) ((~! number.hex) (~ g!code))))]
(~+ options)))))))
|
