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|
(.module:
[lux (#- Definition)
[control
[monad (#+ do)]
["ex" exception (#+ exception:)]
pipe]
[concurrency
["." atom (#+ Atom atom)]]
[data
["." error (#+ Error)]
["." text
format]
[collection
["." array]
["." dictionary (#+ Dictionary)]]]
["." host (#+ import: do-to object)]
["." io (#+ IO io)]
[world
[binary (#+ Binary)]]
[compiler
[default
["." name]
[phase
["." translation]]]]]
[///
[host
["." jvm (#+ Inst Definition Host State)
["." type]
["." def]
["." inst]]]]
)
(import: org/objectweb/asm/Label)
(import: java/lang/reflect/AccessibleObject
(setAccessible [boolean] void))
(import: java/lang/reflect/Field
(get [#? Object] #try #? Object))
(import: java/lang/reflect/Method
(invoke [Object (Array Object)] #try Object))
(import: (java/lang/Class a)
(getField [String] #try Field)
(getDeclaredMethod [String (Array (Class Object))] #try Method))
(import: java/lang/Object
(getClass [] (Class Object)))
(import: java/lang/Integer
(#static TYPE (Class Integer)))
(import: java/lang/ClassLoader
(loadClass [String] #try (Class Object)))
(def: ClassLoader::defineClass
Method
(case (Class::getDeclaredMethod ["defineClass"
(|> (host.array (Class Object) +4)
(host.array-write +0 (:coerce (Class Object) (host.class-for String)))
(host.array-write +1 (Object::getClass [] (host.array byte +0)))
(host.array-write +2 (:coerce (Class Object) Integer::TYPE))
(host.array-write +3 (:coerce (Class Object) Integer::TYPE)))]
(host.class-for java/lang/ClassLoader))
(#error.Success method)
(do-to method
(AccessibleObject::setAccessible [#1]))
(#error.Error error)
(error! error)))
(type: #export ByteCode Binary)
(def: (define-class class-name bytecode loader)
(-> Text ByteCode ClassLoader (Error Object))
(Method::invoke [loader
(array.from-list (list (:coerce Object class-name)
(:coerce Object bytecode)
(:coerce Object (host.long-to-int 0))
(:coerce Object (host.long-to-int (.int (host.array-length bytecode))))))]
ClassLoader::defineClass))
(type: Store (Atom (Dictionary Text ByteCode)))
(def: (fetch-bytecode class-name store)
(-> Text Store (Maybe ByteCode))
(|> store atom.read io.run (dictionary.get class-name)))
(do-template [<name>]
[(exception: #export (<name> {class Text})
(ex.report ["Class" class]))]
[unknown-class]
[class-already-stored]
)
(exception: #export (cannot-define-class {class Text} {error Text})
(ex.report ["Class" class]
["Error" error]))
(def: (memory-class-loader store)
(-> Store ClassLoader)
(object [] ClassLoader []
[]
(ClassLoader (findClass [class-name String]) Class
(case (fetch-bytecode class-name store)
(#.Some bytecode)
(case (define-class class-name bytecode (:coerce ClassLoader _jvm_this))
(#error.Success class)
(:assume class)
(#error.Error error)
(error! (ex.construct cannot-define-class [class-name error])))
#.None
(error! (ex.construct unknown-class class-name))))))
(def: (store! name bytecode store)
(-> Text ByteCode Store (Error Any))
(if (dictionary.contains? name (|> store atom.read io.run))
(ex.throw class-already-stored name)
(exec (io.run (atom.update (dictionary.put name bytecode) store))
(#error.Success []))))
(def: (load! name loader)
(-> Text ClassLoader (Error (Class Object)))
(ClassLoader::loadClass [name] loader))
(def: #export value-field Text "_value")
(def: #export $Object jvm.Type (type.class "java.lang.Object" (list)))
(exception: #export (cannot-load {class Text} {error Text})
(ex.report ["Class" class]
["Error" error]))
(exception: #export (invalid-field {class Text} {field Text})
(ex.report ["Class" class]
["Field" field]))
(exception: #export (invalid-value {class Text})
(ex.report ["Class" class]))
(def: (class-value class-name class)
(-> Text (Class Object) (Error Any))
(case (Class::getField [..value-field] class)
(#error.Success field)
(case (Field::get [#.None] field)
(#error.Success ?value)
(case ?value
(#.Some value)
(#error.Success value)
#.None
(ex.throw invalid-value class-name))
(#error.Error error)
(ex.throw cannot-load [class-name error]))
(#error.Error error)
(ex.throw invalid-field [class-name ..value-field])))
(def: (eval store loader valueI)
(-> Store ClassLoader Inst (Error Any))
(do error.Monad<Error>
[#let [eval-class "eval"
bytecode (def.class #jvm.V1_6
#jvm.Public jvm.noneC
eval-class
(list) ["java.lang.Object" (list)]
(list)
(|>> (def.field #jvm.Public ($_ jvm.++F jvm.finalF jvm.staticF)
..value-field ..$Object)
(def.method #jvm.Public ($_ jvm.++M jvm.staticM jvm.strictM)
"<clinit>"
(type.method (list) #.None (list))
(|>> valueI
(inst.PUTSTATIC eval-class ..value-field ..$Object)
inst.RETURN))))]
_ (..store! eval-class bytecode store)
class (..load! eval-class loader)]
(class-value eval-class class)))
(def: (define store loader [class-name class-bytecode])
(-> Store ClassLoader Definition (Error Any))
(do error.Monad<Error>
[_ (..store! class-name class-bytecode store)
class (..load! class-name loader)]
(class-value class-name class)))
(def: #export init
(IO State)
(io (let [store (: Store (atom (dictionary.new text.Hash<Text>)))
loader (memory-class-loader store)]
(translation.init (: Host
(structure
(def: evaluate! (..eval store loader))
(def: execute! (..define store loader))))))))
(def: #export runtime-class "LuxRuntime")
(def: #export function-class "LuxFunction")
(def: #export runnable-class "LuxRunnable")
(def: #export unit "")
|
