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|
(.module:
[library
[lux (#- Type if let case)
[abstract
["." monad (#+ do)]]
[control
["." function]
["ex" exception (#+ exception:)]]
[data
[collection
["." list ("#@." fold)]]]
[math
[number
["n" nat]]]
[target
[jvm
["." type (#+ Type)
["." category (#+ Void Value Return Primitive Object Class Array Var Parameter Method)]
["." descriptor (#+ Descriptor)]
["." signature (#+ Signature)]]]]
[tool
[compiler
["." phase ("operation@." monad)]
[meta
[archive (#+ Archive)]]
[language
[lux
["." synthesis (#+ Path Synthesis)]]]]]]]
[luxc
[lang
[host
["$" jvm (#+ Label Inst Operation Phase Generator)
["_" inst]]]]]
["." //
["." runtime]
["." structure]])
(def: (pop_altI stack_depth)
(-> Nat Inst)
(.case stack_depth
0 function.identity
1 _.POP
2 _.POP2
_ ... (n.> 2)
(|>> _.POP2
(pop_altI (n.- 2 stack_depth)))))
(def: peekI
Inst
(|>> _.DUP
(_.int +0)
_.AALOAD))
(def: pushI
Inst
(_.INVOKESTATIC //.$Runtime "pm_push" (type.method [(list) (list runtime.$Stack //.$Value) runtime.$Stack (list)])))
(def: popI
(|>> (_.int +1)
_.AALOAD
(_.CHECKCAST runtime.$Stack)))
(def: (leftsI value)
(-> Nat Inst)
(.case value
0 _.ICONST_0
1 _.ICONST_1
2 _.ICONST_2
3 _.ICONST_3
4 _.ICONST_4
5 _.ICONST_5
_ (_.int (.int value))))
(def: projectionJT
(type.method [(list) (list //.$Tuple runtime.$Index) //.$Value (list)]))
(def: (left_projection lefts)
(-> Nat Inst)
(.let [[indexI accessI] (.case lefts
0
[_.ICONST_0
_.AALOAD]
lefts
[(leftsI lefts)
(_.INVOKESTATIC //.$Runtime "tuple_left" ..projectionJT)])]
(|>> (_.CHECKCAST //.$Tuple)
indexI
accessI)))
(def: (right_projection lefts)
(-> Nat Inst)
(|>> (_.CHECKCAST //.$Tuple)
(leftsI lefts)
(_.INVOKESTATIC //.$Runtime "tuple_right" ..projectionJT)))
(def: equalsJT
(type.method [(list) (list //.$Value) type.boolean (list)]))
(def: sideJT
(type.method [(list) (list //.$Variant runtime.$Tag runtime.$Flag) runtime.$Value (list)]))
(def: (path' stack_depth @else @end phase archive path)
(-> Nat Label Label Phase Archive Path (Operation Inst))
(.case path
#synthesis.Pop
(operation@in ..popI)
(#synthesis.Bind register)
(operation@in (|>> peekI
(_.ASTORE register)))
(#synthesis.Bit_Fork when thenP elseP)
(do phase.monad
[thenG (path' stack_depth @else @end phase archive thenP)
elseG (.case elseP
(#.Some elseP)
(path' stack_depth @else @end phase archive elseP)
#.None
(in (_.GOTO @else)))
.let [ifI (.if when _.IFEQ _.IFNE)]]
(in (<| _.with_label (function (_ @else))
(|>> peekI
(_.unwrap type.boolean)
(ifI @else)
thenG
(_.label @else)
elseG))))
(^template [<tag> <unwrap> <dup> <pop> <test> <comparison> <if>]
[(<tag> cons)
(do {@ phase.monad}
[forkG (: (Operation Inst)
(monad.fold @ (function (_ [test thenP] elseG)
(do @
[thenG (path' stack_depth @else @end phase archive thenP)]
(in (<| _.with_label (function (_ @else))
(|>> <dup>
(<test> test)
<comparison>
(<if> @else)
<pop>
thenG
(_.label @else)
elseG)))))
(|>> <pop>
(_.GOTO @else))
(#.Item cons)))]
(in (|>> peekI
<unwrap>
forkG)))])
([#synthesis.I64_Fork (_.unwrap type.long) _.DUP2 _.POP2 (|>> .int _.long) _.LCMP _.IFNE]
[#synthesis.F64_Fork (_.unwrap type.double) _.DUP2 _.POP2 _.double _.DCMPL _.IFNE]
[#synthesis.Text_Fork (|>) _.DUP _.POP _.string
(_.INVOKEVIRTUAL (type.class "java.lang.Object" (list)) "equals" ..equalsJT)
_.IFEQ])
(#synthesis.Then bodyS)
(do phase.monad
[bodyI (phase archive bodyS)]
(in (|>> (pop_altI stack_depth)
bodyI
(_.GOTO @end))))
(^template [<pattern> <right?>]
[(^ (<pattern> lefts))
(operation@in (<| _.with_label (function (_ @success))
_.with_label (function (_ @fail))
(|>> peekI
(_.CHECKCAST //.$Variant)
(structure.tagI lefts <right?>)
(structure.flagI <right?>)
(_.INVOKESTATIC //.$Runtime "pm_variant" ..sideJT)
_.DUP
(_.IFNULL @fail)
(_.GOTO @success)
(_.label @fail)
_.POP
(_.GOTO @else)
(_.label @success)
pushI)))])
([synthesis.side/left false]
[synthesis.side/right true])
... Extra optimization
(^template [<path> <projection>]
[(^ (<path> lefts))
(operation@in (|>> peekI
(<projection> lefts)
pushI))
(^ (synthesis.path/seq
(<path> lefts)
(synthesis.!bind_top register thenP)))
(do phase.monad
[then! (path' stack_depth @else @end phase archive thenP)]
(in (|>> peekI
(<projection> lefts)
(_.ASTORE register)
then!)))])
([synthesis.member/left ..left_projection]
[synthesis.member/right ..right_projection])
(#synthesis.Seq leftP rightP)
(do phase.monad
[leftI (path' stack_depth @else @end phase archive leftP)
rightI (path' stack_depth @else @end phase archive rightP)]
(in (|>> leftI
rightI)))
(#synthesis.Alt leftP rightP)
(do phase.monad
[@alt_else _.make_label
leftI (path' (inc stack_depth) @alt_else @end phase archive leftP)
rightI (path' stack_depth @else @end phase archive rightP)]
(in (|>> _.DUP
leftI
(_.label @alt_else)
_.POP
rightI)))
))
(def: failJT
(type.method [(list) (list) type.void (list)]))
(def: (path @end phase archive path)
(-> Label Phase Archive Path (Operation Inst))
(do phase.monad
[@else _.make_label
pathI (..path' 1 @else @end phase archive path)]
(in (|>> pathI
(_.label @else)
_.POP
(_.INVOKESTATIC //.$Runtime "pm_fail" ..failJT)
_.NULL
(_.GOTO @end)))))
(def: .public (if phase archive [testS thenS elseS])
(Generator [Synthesis Synthesis Synthesis])
(do phase.monad
[testI (phase archive testS)
thenI (phase archive thenS)
elseI (phase archive elseS)]
(in (<| _.with_label (function (_ @else))
_.with_label (function (_ @end))
(|>> testI
(_.unwrap type.boolean)
(_.IFEQ @else)
thenI
(_.GOTO @end)
(_.label @else)
elseI
(_.label @end))))))
(def: .public (let phase archive [inputS register exprS])
(Generator [Synthesis Nat Synthesis])
(do phase.monad
[inputI (phase archive inputS)
exprI (phase archive exprS)]
(in (|>> inputI
(_.ASTORE register)
exprI))))
(def: .public (get phase archive [path recordS])
(Generator [(List synthesis.Member) Synthesis])
(do phase.monad
[recordG (phase archive recordS)]
(in (list@fold (function (_ step so_far)
(.let [next (.case step
(#.Left lefts)
(..left_projection lefts)
(#.Right lefts)
(..right_projection lefts))]
(|>> so_far next)))
recordG
(list.reversed path)))))
(def: .public (case phase archive [valueS path])
(Generator [Synthesis Path])
(do phase.monad
[@end _.make_label
valueI (phase archive valueS)
pathI (..path @end phase archive path)]
(in (|>> _.NULL
valueI
pushI
pathI
(_.label @end)))))
|
