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|
(.module:
[lux (#- function)
[abstract
["." monad (#+ do)]]
[control
[pipe (#+ when> new>)]
["." function]]
[data
["." text
format]
[collection
["." list ("#/." functor monoid)]]]
[tool
[compiler
[analysis (#+ Arity)]
[synthesis (#+ Synthesis Abstraction Apply)]
["_." reference (#+ Register Variable)]
["." phase
["." generation]]]]]
[luxc
[lang
[host
["$" jvm (#+ Label Inst Def Operation Phase)
["." type]
["." def]
["_" inst]]]]]
["." //
["." runtime]
["." reference]])
(def: arity-field Text "arity")
(def: $Object $.Type (type.class "java.lang.Object" (list)))
(def: (poly-arg? arity)
(-> Arity Bit)
(n/> 1 arity))
(def: (reset-method class)
(-> Text $.Method)
(type.method (list) (#.Some (type.class class (list))) (list)))
(def: (captured-args env)
(-> (List Variable) (List $.Type))
(list.repeat (list.size env) $Object))
(def: (init-method env arity)
(-> (List Variable) Arity $.Method)
(if (poly-arg? arity)
(type.method (list.concat (list (captured-args env)
(list type.int)
(list.repeat (dec arity) $Object)))
#.None
(list))
(type.method (captured-args env) #.None (list))))
(def: (implementation-method arity)
(type.method (list.repeat arity $Object) (#.Some $Object) (list)))
(def: get-amount-of-partialsI
Inst
(|>> (_.ALOAD 0)
(_.GETFIELD //.function-class runtime.partials-field type.int)))
(def: (load-fieldI class field)
(-> Text Text Inst)
(|>> (_.ALOAD 0)
(_.GETFIELD class field $Object)))
(def: (inputsI start amount)
(-> Register Nat Inst)
(|> (list.n/range start (n/+ start (dec amount)))
(list/map _.ALOAD)
_.fuse))
(def: (applysI start amount)
(-> Register Nat Inst)
(let [max-args (n/min amount runtime.num-apply-variants)
later-applysI (if (n/> runtime.num-apply-variants amount)
(applysI (n/+ runtime.num-apply-variants start) (n/- runtime.num-apply-variants amount))
function.identity)]
(|>> (_.CHECKCAST //.function-class)
(inputsI start max-args)
(_.INVOKEVIRTUAL //.function-class runtime.apply-method (runtime.apply-signature max-args) #0)
later-applysI)))
(def: (inc-intI by)
(-> Nat Inst)
(|>> (_.int (.int by))
_.IADD))
(def: (nullsI amount)
(-> Nat Inst)
(|> _.NULL
(list.repeat amount)
_.fuse))
(def: (with-captured env)
(-> (List Variable) Def)
(|> (list.enumerate env)
(list/map (.function (_ [env-idx env-source])
(def.field #$.Private $.finalF (reference.foreign-name env-idx) $Object)))
def.fuse))
(def: (with-partial arity)
(-> Arity Def)
(if (poly-arg? arity)
(|> (list.n/range 0 (n/- 2 arity))
(list/map (.function (_ idx)
(def.field #$.Private $.finalF (reference.partial-name idx) $Object)))
def.fuse)
function.identity))
(def: (instance class arity env)
(-> Text Arity (List Variable) (Operation Inst))
(do phase.monad
[captureI+ (monad.map @ reference.variable env)
#let [argsI (if (poly-arg? arity)
(|> (nullsI (dec arity))
(list (_.int +0))
_.fuse)
function.identity)]]
(wrap (|>> (_.NEW class)
_.DUP
(_.fuse captureI+)
argsI
(_.INVOKESPECIAL class "<init>" (init-method env arity) #0)))))
(def: (with-reset class arity env)
(-> Text Arity (List Variable) Def)
(def.method #$.Public $.noneM "reset" (reset-method class)
(if (poly-arg? arity)
(let [env-size (list.size env)
captureI (|> (case env-size
0 (list)
_ (list.n/range 0 (dec env-size)))
(list/map (.function (_ source)
(|>> (_.ALOAD 0)
(_.GETFIELD class (reference.foreign-name source) $Object))))
_.fuse)
argsI (|> (nullsI (dec arity))
(list (_.int +0))
_.fuse)]
(|>> (_.NEW class)
_.DUP
captureI
argsI
(_.INVOKESPECIAL class "<init>" (init-method env arity) #0)
_.ARETURN))
(|>> (_.ALOAD 0)
_.ARETURN))))
(def: (with-implementation arity @begin bodyI)
(-> Nat Label Inst Def)
(def.method #$.Public $.strictM "impl" (implementation-method arity)
(|>> (_.label @begin)
bodyI
_.ARETURN)))
(def: function-init-method
$.Method
(type.method (list type.int) #.None (list)))
(def: (function-init arity env-size)
(-> Arity Nat Inst)
(if (n/= 1 arity)
(|>> (_.int +0)
(_.INVOKESPECIAL //.function-class "<init>" function-init-method #0))
(|>> (_.ILOAD (inc env-size))
(_.INVOKESPECIAL //.function-class "<init>" function-init-method #0))))
(def: (with-init class env arity)
(-> Text (List Variable) Arity Def)
(let [env-size (list.size env)
offset-partial (: (-> Nat Nat)
(|>> inc (n/+ env-size)))
store-capturedI (|> (case env-size
0 (list)
_ (list.n/range 0 (dec env-size)))
(list/map (.function (_ register)
(|>> (_.ALOAD 0)
(_.ALOAD (inc register))
(_.PUTFIELD class (reference.foreign-name register) $Object))))
_.fuse)
store-partialI (if (poly-arg? arity)
(|> (list.n/range 0 (n/- 2 arity))
(list/map (.function (_ idx)
(let [register (offset-partial idx)]
(|>> (_.ALOAD 0)
(_.ALOAD (inc register))
(_.PUTFIELD class (reference.partial-name idx) $Object)))))
_.fuse)
function.identity)]
(def.method #$.Public $.noneM "<init>" (init-method env arity)
(|>> (_.ALOAD 0)
(function-init arity env-size)
store-capturedI
store-partialI
_.RETURN))))
(def: (with-apply class env function-arity @begin bodyI apply-arity)
(-> Text (List Variable) Arity Label Inst Arity
Def)
(let [num-partials (dec function-arity)
@default ($.new-label [])
@labels (list/map $.new-label (list.repeat num-partials []))
arity-over-extent (|> (.int function-arity) (i/- (.int apply-arity)))
casesI (|> (list/compose @labels (list @default))
(list.zip2 (list.n/range 0 num-partials))
(list/map (.function (_ [stage @label])
(let [load-partialsI (if (n/> 0 stage)
(|> (list.n/range 0 (dec stage))
(list/map (|>> reference.partial-name (load-fieldI class)))
_.fuse)
function.identity)]
(cond (i/= arity-over-extent (.int stage))
(|>> (_.label @label)
(_.ALOAD 0)
(when> [(new> (n/> 0 stage) [])]
[(_.INVOKEVIRTUAL class "reset" (reset-method class) #0)])
load-partialsI
(inputsI 1 apply-arity)
(_.INVOKEVIRTUAL class "impl" (implementation-method function-arity) #0)
_.ARETURN)
(i/> arity-over-extent (.int stage))
(let [args-to-completion (|> function-arity (n/- stage))
args-left (|> apply-arity (n/- args-to-completion))]
(|>> (_.label @label)
(_.ALOAD 0)
(_.INVOKEVIRTUAL class "reset" (reset-method class) #0)
load-partialsI
(inputsI 1 args-to-completion)
(_.INVOKEVIRTUAL class "impl" (implementation-method function-arity) #0)
(applysI (inc args-to-completion) args-left)
_.ARETURN))
## (i/< arity-over-extent (.int stage))
(let [env-size (list.size env)
load-capturedI (|> (case env-size
0 (list)
_ (list.n/range 0 (dec env-size)))
(list/map (|>> reference.foreign-name (load-fieldI class)))
_.fuse)]
(|>> (_.label @label)
(_.NEW class)
_.DUP
load-capturedI
get-amount-of-partialsI
(inc-intI apply-arity)
load-partialsI
(inputsI 1 apply-arity)
(nullsI (|> num-partials (n/- apply-arity) (n/- stage)))
(_.INVOKESPECIAL class "<init>" (init-method env function-arity) #0)
_.ARETURN))
))))
_.fuse)]
(def.method #$.Public $.noneM runtime.apply-method (runtime.apply-signature apply-arity)
(|>> get-amount-of-partialsI
(_.TABLESWITCH +0 (|> num-partials dec .int)
@default @labels)
casesI
(_.INVOKESTATIC //.runtime-class "apply_fail" (type.method (list) #.None (list)) #0)
_.NULL
_.ARETURN
))))
(def: #export (with-function @begin class env arity bodyI)
(-> Label Text (List Variable) Arity Inst
(Operation [Def Inst]))
(let [env-size (list.size env)
applyD (: Def
(if (poly-arg? arity)
(|> (n/min arity runtime.num-apply-variants)
(list.n/range 1)
(list/map (with-apply class env arity @begin bodyI))
(list& (with-implementation arity @begin bodyI))
def.fuse)
(def.method #$.Public $.strictM runtime.apply-method (runtime.apply-signature 1)
(|>> (_.label @begin)
bodyI
_.ARETURN))))
functionD (: Def
(|>> (def.int-field #$.Public ($_ $.++F $.staticF $.finalF) arity-field (.int arity))
(with-captured env)
(with-partial arity)
(with-init class env arity)
(with-reset class arity env)
applyD
))]
(do phase.monad
[instanceI (instance class arity env)]
(wrap [functionD instanceI]))))
(def: #export (function translate [env arity bodyS])
(-> Phase Abstraction (Operation Inst))
(do phase.monad
[@begin _.make-label
[function-class bodyI] (generation.with-context
(generation.with-anchor [@begin 1]
(translate bodyS)))
[functionD instanceI] (with-function @begin function-class env arity bodyI)
_ (generation.save! true ["" function-class]
[function-class
(def.class #$.V1_6 #$.Public $.finalC
function-class (list)
($.simple-class //.function-class) (list)
functionD)])]
(wrap instanceI)))
(def: (segment size elems)
(All [a] (-> Nat (List a) (List (List a))))
(let [[pre post] (list.split size elems)]
(if (list.empty? post)
(list pre)
(list& pre (segment size post)))))
(def: #export (call translate [functionS argsS])
(-> Phase Apply (Operation Inst))
(do phase.monad
[functionI (translate functionS)
argsI (monad.map @ translate argsS)
#let [applyI (|> (segment runtime.num-apply-variants argsI)
(list/map (.function (_ chunkI+)
(|>> (_.CHECKCAST //.function-class)
(_.fuse chunkI+)
(_.INVOKEVIRTUAL //.function-class runtime.apply-method (runtime.apply-signature (list.size chunkI+)) #0))))
_.fuse)]]
(wrap (|>> functionI
applyI))))
|
