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(.module:
lux
(lux (control [monad #+ do]
pipe)
(data [product]
[text]
text/format
(coll [list "list/" Functor<List> Fold<List>]))
[macro])
(luxc ["&" lang]
(lang ["ls" synthesis]
[".L" variable #+ Variable]
(host ["_" scheme #+ Expression @@])))
[//]
(// [".T" reference]
[".T" runtime]))
(def: #export (translate-apply translate functionS argsS+)
(-> (-> ls.Synthesis (Meta Expression)) ls.Synthesis (List ls.Synthesis) (Meta Expression))
(do macro.Monad<Meta>
[functionO (translate functionS)
argsO+ (monad.map @ translate argsS+)]
(wrap (_.apply functionO argsO+))))
(def: $curried (_.var "curried"))
(def: $missing (_.var "missing"))
(def: input-declaration
(|>> n/inc referenceT.variable))
(def: (with-closure function-name inits function-definition)
(-> Text (List Expression) Expression (Meta Expression))
(let [$closure (_.var (format function-name "___CLOSURE"))]
(do macro.Monad<Meta>
[]
(case inits
#.Nil
(wrap function-definition)
_
(wrap (_.letrec (list [$closure
(_.lambda (|> (list.enumerate inits)
(list/map (|>> product.left referenceT.closure))
_.poly)
function-definition)])
(_.apply (@@ $closure) inits)))))))
(def: #export (translate-function translate env arity bodyS)
(-> (-> ls.Synthesis (Meta Expression))
(List Variable) ls.Arity ls.Synthesis
(Meta Expression))
(do macro.Monad<Meta>
[[function-name bodyO] (//.with-sub-context
(do @
[function-name //.context]
(//.with-anchor [function-name +1]
(translate bodyS))))
closureO+ (monad.map @ referenceT.translate-variable env)
#let [arityO (|> arity nat-to-int _.int)
$num_args (_.var "num_args")
$function (_.var function-name)
apply-poly (function (_ args func)
(_.apply (_.global "apply") (list func args)))]]
(with-closure function-name closureO+
(_.letrec (list [$function (_.lambda $curried
(_.let (list [$num_args (_.length (@@ $curried))])
(<| (_.if (|> (@@ $num_args) (_.= arityO))
(_.let (list [(referenceT.variable +0) (@@ $function)])
(_.let-values (list [(|> (list.n/range +0 (n/dec arity))
(list/map input-declaration)
_.poly)
(_.apply (_.global "apply") (list (_.global "values") (@@ $curried)))])
bodyO)))
(_.if (|> (@@ $num_args) (_.> arityO))
(let [arity-args (runtimeT.list-slice (_.int 0) arityO (@@ $curried))
output-func-args (runtimeT.list-slice arityO
(|> (@@ $num_args) (_.- arityO))
(@@ $curried))]
(|> (@@ $function)
(apply-poly arity-args)
(apply-poly output-func-args))))
## (|> (@@ $num_args) (_.< arityO))
(_.lambda $missing
(|> (@@ $function)
(apply-poly (_.append (@@ $curried) (@@ $missing))))))))])
(@@ $function)))
))
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