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(.module:
[lux #- loop]
(lux (control [monad #+ do])
(data [product]
[text]
text/format
(coll [list "list/" Functor<List>]))
[macro])
[////]
(//// [name]
(host ["_" scheme #+ Computation Var])
[compiler "operation/" Monad<Operation>]
[synthesis #+ Synthesis])
[///]
[//runtime #+ Operation Translator]
[//reference])
(def: @loop (_.var "loop"))
(def: #export (loop translate offset initsS+ bodyS)
(-> Translator Nat (List Synthesis) Synthesis
(Operation Computation))
(do compiler.Monad<Operation>
[initsO+ (monad.map @ translate initsS+)
bodyO (///.with-anchor @loop
(translate bodyS))]
(wrap (_.letrec (list [@loop (_.lambda [(|> initsS+
list.enumerate
(list/map (|>> product.left (n/+ offset) //reference.local')))
#.None]
bodyO)])
(_.apply/* @loop initsO+)))))
(def: #export (recur translate argsS+)
(-> Translator (List Synthesis) (Operation Computation))
(do compiler.Monad<Operation>
[@loop ///.anchor
argsO+ (monad.map @ translate argsS+)]
(wrap (_.apply/* @loop argsO+))))
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