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(.module:
[lux #*
[control
[monad (#+ do)]
["ex" exception (#+ exception:)]]
[data
[text
format]
[collection
["." list]]]
[language
["." compiler
[synthesis (#+ Synthesis)]]]]
[luxc
[lang
[host
["." jvm (#+ Inst Operation Compiler)
["$t" type]
["$i" inst]]]]]
[//])
(exception: #export (not-a-tuple {size Nat})
(ex.report ["Expected size" ">= 2"]
["Actual size" (%n size)]))
(def: $Object jvm.Type ($t.class "java.lang.Object" (list)))
(def: #export (tuple translate members)
(-> Compiler (List Synthesis) (Operation Inst))
(do compiler.Monad<Operation>
[#let [size (list.size members)]
_ (compiler.assert not-a-tuple size
(n/>= +2 size))
membersI (|> members
list.enumerate
(monad.map @ (function (_ [idx member])
(do @
[memberI (translate member)]
(wrap (|>> $i.DUP
($i.int (.int idx))
memberI
$i.AASTORE)))))
(:: @ map $i.fuse))]
(wrap (|>> ($i.int (.int size))
($i.array $Object)
membersI))))
(def: (flagI tail?)
(-> Bit Inst)
(if tail?
($i.string "")
$i.NULL))
(def: #export (variant translate tag tail? member)
(-> Compiler Nat Bit Synthesis (Operation Inst))
(do compiler.Monad<Operation>
[memberI (translate member)]
(wrap (|>> ($i.int (.int tag))
(flagI tail?)
memberI
($i.INVOKESTATIC //.runtime-class
"variant_make"
($t.method (list $t.int $Object $Object)
(#.Some ($t.array +1 $Object))
(list))
#0)))))
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