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(.module:
[lux (#- Scope)
[abstract
["." monad (#+ do)]]
[data
["." product]
[number
["n" nat]]
[text
["%" format (#+ format)]]
[collection
["." list ("#@." functor)]]]
[target
["_" php (#+ Expression)]]]
["." // #_
[runtime (#+ Operation Phase)]
["#." case]
["#/" //
["#/" //
[//
[synthesis (#+ Scope Synthesis)]]]]])
(def: #export (scope generate [start initsS+ bodyS])
(-> Phase (Scope Synthesis) (Operation (Expression Any)))
(do ////.monad
[@loop (:: @ map (|>> %.nat (format "loop")) ///.next)
#let [@loopG (_.global @loop)
@loopL (_.var @loop)]
initsO+ (monad.map @ generate initsS+)
bodyO (///.with-anchor @loopL
(generate bodyS))
_ (///.save! true ["" @loop]
($_ _.then
(<| _.;
(_.set @loopL)
(_.closure (list (_.reference @loopL))
(|> initsS+
list.enumerate
(list@map (|>> product.left (n.+ start) //case.register [#0])))
(_.return bodyO)))
(_.; (_.set @loopG @loopL))))]
(wrap (_.apply/* initsO+ @loopG))))
(def: #export (recur generate argsS+)
(-> Phase (List Synthesis) (Operation (Expression Any)))
(do ////.monad
[@scope ///.anchor
argsO+ (monad.map @ generate argsS+)]
(wrap (_.apply/* argsO+ @scope))))
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