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(;module:
[lux #- function]
(lux (control ["ex" exception #+ exception:])
[io]
(concurrency ["A" atom])
(data ["e" error]
(coll ["d" dict]))
[host])
(luxc (generator (host ["$" jvm]
(jvm ["$t" type]
["$d" def]
["$i" inst])))))
(host;import org.objectweb.asm.Opcodes
(#static V1_6 int))
(host;import java.lang.Object)
(host;import (java.lang.Class a))
(host;import java.lang.ClassLoader
(loadClass [String] (Class Object)))
(type: #export Bytecode (host;type (Array byte)))
(type: #export Class-Store (A;Atom (d;Dict Text Bytecode)))
(type: #export Host
{#loader ClassLoader
#store Class-Store
#function-class (Maybe Text)})
(exception: Unknown-Class)
(exception: Class-Already-Stored)
(exception: No-Function-Being-Compiled)
(def: #export (store-class name byte-code)
(-> Text Bytecode (Meta Unit))
(;function [compiler]
(let [store (|> (get@ #;host compiler)
(:! Host)
(get@ #store))]
(if (d;contains? name (|> store A;get io;run))
(ex;throw Class-Already-Stored name)
(#e;Success [compiler (io;run (A;update (d;put name byte-code) store))])
))))
(def: #export (load-class name)
(-> Text (Meta (Class Object)))
(;function [compiler]
(let [host (:! Host (get@ #;host compiler))
store (|> host (get@ #store) A;get io;run)]
(if (d;contains? name store)
(#e;Success [compiler (ClassLoader.loadClass [name] (get@ #loader host))])
(ex;throw Unknown-Class name)))))
(def: #export (with-function class expr)
(All [a] (-> Text (Meta a) (Meta a)))
(;function [compiler]
(let [host (:! Host (get@ #;host compiler))
old-function-class (get@ #function-class host)]
(case (expr (set@ #;host
(:! Void (set@ #function-class
(#;Some class)
host))
compiler))
(#e;Success [compiler' output])
(#e;Success [(update@ #;host
(|>. (:! Host)
(set@ #function-class old-function-class)
(:! Void))
compiler')
output])
(#e;Error error)
(#e;Error error)))))
(def: #export function
(Meta Text)
(;function [compiler]
(let [host (:! Host (get@ #;host compiler))]
(case (get@ #function-class host)
#;None
(ex;throw No-Function-Being-Compiled "")
(#;Some function-class)
(#e;Success [compiler function-class])))))
(def: #export bytecode-version Int Opcodes.V1_6)
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