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|
(.module:
[lux #*
[abstract
["." equivalence (#+ Equivalence)]
["." monoid (#+ Monoid)]]
[control
["<>" parser
["<c>" code]
["<2>" binary (#+ Parser)]]]
[data
["." number (#+ hex)
["." i64]]
[format
[".F" binary (#+ Writer)]]
[collection
["." list ("#@." functor)]]]
[type
abstract]
[macro (#+ with-gensyms)
[syntax (#+ syntax:)]
["." code]]]
["." // #_
[encoding
["#." unsigned]]])
(abstract: #export (Modifier of)
{}
//unsigned.U2
(template: (!wrap value)
(|> value
//unsigned.u2
:abstraction))
(template: (!unwrap value)
(|> value
:representation
//unsigned.nat))
(def: #export code
(-> (Modifier Any) //unsigned.U2)
(|>> :representation))
(def: modifier
(-> Nat Modifier)
(|>> !wrap))
(structure: #export equivalence
(All [of] (Equivalence (Modifier of)))
(def: (= reference sample)
(:: //unsigned.equivalence =
(:representation reference)
(:representation sample))))
(structure: #export monoid
(All [of] (Monoid (Modifier of)))
(def: identity
(!wrap (hex "0000")))
(def: (compose left right)
(!wrap (i64.and (!unwrap left) (!unwrap right)))))
(def: #export empty
Modifier
(:: ..monoid identity))
(def: #export parser
(All [of] (Parser (Modifier of)))
(:: <>.functor map (|>> :abstraction) //unsigned.u2-parser))
(def: #export writer
(All [of] (Writer (Modifier of)))
(|>> :representation //unsigned.u2-writer))
)
(syntax: #export (modifiers: ofT {options (<>.many <c>.any)})
(with-gensyms [g!modifier g!code]
(wrap (list (` (template [(~ g!code) (~ g!modifier)]
[(def: (~' #export) (~ g!modifier)
(..Modifier (~ ofT))
((~! ..modifier) ((~! number.hex) (~ g!code))))]
(~+ options)))))))
|
