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(.module:
[library
[lux {"-" [Type]}
["[0]" ffi {"+" [import:]}]
[abstract
["[0]" monad {"+" [do]}]]
[control
["[0]" exception {"+" [exception:]}]]
[data
[text
["%" format {"+" [format]}]]
[collection
["[0]" list]]]
[math
[number
["n" nat]
["i" int]]]
[target
[jvm
["[0]" type {"+" [Type]}
["[0]" category {"+" [Void Value Return Primitive Object Class Array Var Parameter Method]}]
["[0]" descriptor {"+" [Descriptor]}]
["[0]" signature {"+" [Signature]}]]]]
[tool
[compiler
["[0]" phase]
[meta
[archive {"+" [Archive]}]]
[language
[lux
[synthesis {"+" [Synthesis]}]]]]]]]
[luxc
[lang
[host
[jvm {"+" [Inst Operation Phase Generator]}
["_" inst]]]]]
["[0]" //
["[1][0]" runtime]])
(exception: .public (not_a_tuple {size Nat})
(exception.report
["Expected size" ">= 2"]
["Actual size" (%.nat size)]))
(def: .public (tuple generate archive members)
(Generator (List Synthesis))
(do [@ phase.monad]
[.let [size (list.size members)]
_ (phase.assertion ..not_a_tuple size
(n.>= 2 size))
membersI (|> members
list.enumeration
(monad.each @ (function (_ [idx member])
(do @
[memberI (generate archive member)]
(in (|>> _.DUP
(_.int (.int idx))
memberI
_.AASTORE)))))
(\ @ each _.fuse))]
(in (|>> (_.int (.int size))
(_.array //runtime.$Value)
membersI))))
(import: java/lang/Byte
["[1]::[0]"
("static" MAX_VALUE byte)
("static" MIN_VALUE byte)])
(import: java/lang/Short
["[1]::[0]"
("static" MAX_VALUE short)
("static" MIN_VALUE short)])
(def: .public (tagI lefts right?)
(-> Nat Bit Inst)
(case lefts
0 _.ICONST_0
1 _.ICONST_1
2 _.ICONST_2
3 _.ICONST_3
4 _.ICONST_4
5 _.ICONST_5
tag (let [tag (.int tag)]
(cond (and (i.>= (java/lang/Byte::MIN_VALUE) tag)
(i.<= (java/lang/Byte::MAX_VALUE) tag))
(_.BIPUSH tag)
(and (i.>= (java/lang/Short::MIN_VALUE) tag)
(i.<= (java/lang/Short::MAX_VALUE) tag))
(_.SIPUSH tag)
... else
(_.int tag)))))
(def: .public leftI _.NULL)
(def: .public rightI (_.string ""))
(def: .public (flagI right?)
(-> Bit Inst)
(if right?
..rightI
..leftI))
(def: .public (variant generate archive [lefts right? member])
(Generator [Nat Bit Synthesis])
(do phase.monad
[memberI (generate archive member)
.let [tagI (..tagI lefts right?)]]
(in (|>> tagI
(flagI right?)
memberI
(_.INVOKESTATIC //.$Runtime
"variant_make"
(type.method [(list)
(list //runtime.$Lefts //runtime.$Right? //runtime.$Value)
//.$Variant
(list)]))))))
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