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(.module:
[lux (#- Definition)
["." host (#+ import: do-to object)]
[abstract
[monad (#+ do)]]
[control
pipe
["." try (#+ Try)]
["." exception (#+ exception:)]
["." io (#+ IO io)]
[concurrency
["." atom (#+ Atom atom)]]]
[data
[binary (#+ Binary)]
["." product]
["." text ("#@." hash)
["%" format (#+ format)]]
[collection
["." array]
["." dictionary (#+ Dictionary)]]]
[target
[jvm
["." loader (#+ Library)]
["." type
["." descriptor]]]]
[tool
[compiler
["." name]]]]
[///
[host
["." jvm (#+ Inst Definition Host State)
["." def]
["." inst]]]]
)
(import: org/objectweb/asm/Label)
(import: java/lang/reflect/Field
(get [#? Object] #try #? Object))
(import: (java/lang/Class a)
(getField [String] #try Field))
(import: java/lang/Object
(getClass [] (Class Object)))
(import: java/lang/ClassLoader)
(type: #export ByteCode Binary)
(def: #export value-field Text "_value")
(def: #export $Value (type.class "java.lang.Object" (list)))
(exception: #export (cannot-load {class Text} {error Text})
(exception.report
["Class" class]
["Error" error]))
(exception: #export (invalid-field {class Text} {field Text} {error Text})
(exception.report
["Class" class]
["Field" field]
["Error" error]))
(exception: #export (invalid-value {class Text})
(exception.report
["Class" class]))
(def: (class-value class-name class)
(-> Text (Class Object) (Try Any))
(case (Class::getField ..value-field class)
(#try.Success field)
(case (Field::get #.None field)
(#try.Success ?value)
(case ?value
(#.Some value)
(#try.Success value)
#.None
(exception.throw invalid-value class-name))
(#try.Failure error)
(exception.throw cannot-load [class-name error]))
(#try.Failure error)
(exception.throw invalid-field [class-name ..value-field error])))
(def: class-path-separator ".")
(def: (evaluate! library loader eval-class valueI)
(-> Library ClassLoader Text Inst (Try [Any Definition]))
(let [bytecode-name (text.replace-all class-path-separator .module-separator eval-class)
bytecode (def.class #jvm.V1_6
#jvm.Public jvm.noneC
bytecode-name
(list) $Value
(list)
(|>> (def.field #jvm.Public ($_ jvm.++F jvm.finalF jvm.staticF)
..value-field ..$Value)
(def.method #jvm.Public ($_ jvm.++M jvm.staticM jvm.strictM)
"<clinit>"
(type.method [(list) type.void (list)])
(|>> valueI
(inst.PUTSTATIC (type.class bytecode-name (list)) ..value-field ..$Value)
inst.RETURN))))]
(io.run (do (try.with io.monad)
[_ (loader.store eval-class bytecode library)
class (loader.load eval-class loader)
value (:: io.monad wrap (class-value eval-class class))]
(wrap [value
[eval-class bytecode]])))))
(def: (execute! library loader temp-label [class-name class-bytecode])
(-> Library ClassLoader Text Definition (Try Any))
(io.run (do (try.with io.monad)
[existing-class? (|> (atom.read library)
(:: io.monad map (dictionary.contains? class-name))
(try.lift io.monad)
(: (IO (Try Bit))))
_ (if existing-class?
(wrap [])
(loader.store class-name class-bytecode library))]
(loader.load class-name loader))))
(def: (define! library loader [module name] valueI)
(-> Library ClassLoader Name Inst (Try [Text Any Definition]))
(let [class-name (format (text.replace-all .module-separator class-path-separator module)
class-path-separator (name.normalize name)
"___" (%.nat (text@hash name)))]
(do try.monad
[[value definition] (evaluate! library loader class-name valueI)]
(wrap [class-name value definition]))))
(def: #export host
(IO Host)
(io (let [library (loader.new-library [])
loader (loader.memory library)]
(: Host
(structure
(def: (evaluate! temp-label valueI)
(let [eval-class (|> temp-label name.normalize (text.replace-all " " "$"))]
(:: try.monad map product.left
(..evaluate! library loader eval-class valueI))))
(def: execute!
(..execute! library loader))
(def: define!
(..define! library loader)))))))
(def: #export $Variant (type.array ..$Value))
(def: #export $Tuple (type.array ..$Value))
(def: #export $Function (type.class "LuxFunction" (list)))
(def: #export $Runtime (type.class "LuxRuntime" (list)))
|
