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|
(.module:
[lux (#- if let case)
[control
[monad (#+ do)]
["ex" exception (#+ exception:)]]
[data
[text
format]]
[language
["." compiler ("operation/" Monad<Operation>)
["." synthesis (#+ Path Synthesis)]]]]
[luxc
[lang
[host
["$" jvm (#+ Label Inst Operation Compiler)
["$t" type]
["$i" inst]]]]]
["." // (#+ $Object)
[runtime]])
(def: (pop-altI stack-depth)
(-> Nat Inst)
(.case stack-depth
+0 id
+1 $i.POP
+2 $i.POP2
_ ## (n/> +2)
(|>> $i.POP2
(pop-altI (n/- +2 stack-depth)))))
(def: peekI
Inst
(|>> $i.DUP
($i.INVOKESTATIC //.runtime-class
"pm_peek"
($t.method (list runtime.$Stack)
(#.Some $Object)
(list))
#0)))
(def: popI
Inst
(|>> ($i.INVOKESTATIC //.runtime-class
"pm_pop"
($t.method (list runtime.$Stack)
(#.Some runtime.$Stack)
(list))
#0)))
(def: pushI
Inst
(|>> ($i.INVOKESTATIC //.runtime-class
"pm_push"
($t.method (list runtime.$Stack $Object)
(#.Some runtime.$Stack)
(list))
#0)))
(def: (path' translate stack-depth @else @end path)
(-> (-> Synthesis (Operation Inst))
Nat Label Label Path (Operation Inst))
(.case path
#synthesis.Pop
(operation/wrap popI)
(#synthesis.Bind register)
(operation/wrap (|>> peekI
($i.ASTORE register)))
(^ (synthesis.path/bit value))
(operation/wrap (.let [jumpI (.if value $i.IFEQ $i.IFNE)]
(|>> peekI
($i.unwrap #$.Boolean)
(jumpI @else))))
(^ (synthesis.path/i64 value))
(operation/wrap (|>> peekI
($i.unwrap #$.Long)
($i.long value)
$i.LCMP
($i.IFNE @else)))
(^ (synthesis.path/f64 value))
(operation/wrap (|>> peekI
($i.unwrap #$.Double)
($i.double value)
$i.DCMPL
($i.IFNE @else)))
(^ (synthesis.path/text value))
(operation/wrap (|>> peekI
($i.string value)
($i.INVOKEVIRTUAL "java.lang.Object"
"equals"
($t.method (list $Object)
(#.Some $t.boolean)
(list))
#0)
($i.IFEQ @else)))
(#synthesis.Then bodyS)
(do compiler.Monad<Operation>
[bodyI (translate bodyS)]
(wrap (|>> (pop-altI stack-depth)
bodyI
($i.GOTO @end))))
(^template [<pattern> <method> <mod>]
(^ (<pattern> idx))
(operation/wrap (.case (<mod> idx)
+0
(|>> peekI
($i.CHECKCAST ($t.descriptor runtime.$Tuple))
($i.int 0)
$i.AALOAD
pushI)
idx
(|>> peekI
($i.CHECKCAST ($t.descriptor runtime.$Tuple))
($i.int (.int idx))
($i.INVOKESTATIC //.runtime-class
<method>
($t.method (list runtime.$Tuple $t.int)
(#.Some $Object)
(list))
#0)
pushI))))
([synthesis.member/left "pm_left" .id]
[synthesis.member/right "pm_right" .inc])
(^template [<pattern> <flag> <mod>]
(^ (<pattern> idx))
(.let [idx (<mod> idx)]
(operation/wrap (<| $i.with-label (function (_ @success))
$i.with-label (function (_ @fail))
(|>> peekI
($i.CHECKCAST ($t.descriptor runtime.$Variant))
($i.int (.int idx))
<flag>
($i.INVOKESTATIC //.runtime-class "pm_variant"
($t.method (list runtime.$Variant runtime.$Tag runtime.$Flag)
(#.Some runtime.$Datum)
(list))
#0)
$i.DUP
($i.IFNULL @fail)
($i.GOTO @success)
($i.label @fail)
$i.POP
($i.GOTO @else)
($i.label @success)
pushI)))))
([synthesis.side/left $i.NULL .id]
[synthesis.side/right ($i.string "") .inc])
(#synthesis.Alt leftP rightP)
(do compiler.Monad<Operation>
[@alt-else $i.make-label
leftI (path' translate (inc stack-depth) @alt-else @end leftP)
rightI (path' translate stack-depth @else @end rightP)]
(wrap (|>> $i.DUP
leftI
($i.label @alt-else)
$i.POP
rightI)))
(#synthesis.Seq leftP rightP)
(do compiler.Monad<Operation>
[leftI (path' translate stack-depth @else @end leftP)
rightI (path' translate stack-depth @else @end rightP)]
(wrap (|>> leftI
rightI)))
))
(def: (path translate path @end)
(-> Compiler Path Label (Operation Inst))
(do compiler.Monad<Operation>
[@else $i.make-label
pathI (..path' translate +1 @else @end path)]
(wrap (|>> pathI
($i.label @else)
$i.POP
($i.INVOKESTATIC //.runtime-class
"pm_fail"
($t.method (list) #.None (list))
#0)
$i.NULL
($i.GOTO @end)))))
(def: #export (if translate testS thenS elseS)
(-> Compiler Synthesis Synthesis Synthesis (Operation Inst))
(do compiler.Monad<Operation>
[testI (translate testS)
thenI (translate thenS)
elseI (translate elseS)]
(wrap (<| $i.with-label (function (_ @else))
$i.with-label (function (_ @end))
(|>> testI
($i.unwrap #$.Boolean)
($i.IFEQ @else)
thenI
($i.GOTO @end)
($i.label @else)
elseI
($i.label @end))))))
(def: #export (let translate inputS register exprS)
(-> Compiler Synthesis Nat Synthesis (Operation Inst))
(do compiler.Monad<Operation>
[inputI (translate inputS)
exprI (translate exprS)]
(wrap (|>> inputI
($i.ASTORE register)
exprI))))
(def: #export (case translate valueS path)
(-> Compiler Synthesis Path (Operation Inst))
(do compiler.Monad<Operation>
[@end $i.make-label
valueI (translate valueS)
pathI (..path translate path @end)]
(wrap (|>> valueI
$i.NULL
$i.SWAP
pushI
pathI
($i.label @end)))))
|
