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(;module:
lux
(lux (control monad)
(data ["R" result]
text/format)
[macro #+ Monad<Lux> "Lux/" Monad<Lux>]
[host #+ jvm-import do-to])
(luxc ["&" base]
(lang ["la" analysis]
["ls" synthesis])
["&;" analyser]
["&;" synthesizer]
(generator ["&;" common])))
(jvm-import java.lang.Object)
(jvm-import java.lang.String)
(jvm-import java.lang.reflect.Field
(get [Object] #try Object))
(jvm-import (java.lang.Class a)
(getField [String] Field))
(type: Flags Int)
(type: Descriptor Text)
(jvm-import org.objectweb.asm.Opcodes
(#static ACC_PUBLIC int)
(#static ACC_SUPER int)
(#static ACC_FINAL int)
(#static ACC_STATIC int)
(#static DUP int)
(#static PUTSTATIC int)
(#static ILOAD int)
(#static ALOAD int)
(#static ANEWARRAY int)
(#static AASTORE int)
(#static RETURN int)
(#static ARETURN int)
(#static V1_6 int)
)
(jvm-import org.objectweb.asm.MethodVisitor
(visitCode [] void)
(visitEnd [] void)
(visitInsn [int] void)
(visitLdcInsn [Object] void)
(visitFieldInsn [int String String String] void)
(visitVarInsn [int int] void)
(visitTypeInsn [int String] void)
(visitMaxs [int int] void))
(jvm-import org.objectweb.asm.FieldVisitor
(visitEnd [] void))
(jvm-import org.objectweb.asm.ClassWriter
(#static COMPUTE_MAXS int)
(new [int])
(visit [int int String String String (Array String)] void)
(visitEnd [] void)
(visitField [int String String String Object] FieldVisitor)
(visitMethod [int String String String (Array String)] MethodVisitor)
(toByteArray [] Byte-Array))
(def: (generate-adt-methods writer)
(-> ClassWriter ClassWriter)
(let [## I commented-out some parts because a null-check was
## done to ensure variants were never created with null
## values (this would interfere later with
## pattern-matching).
## Since Lux itself does not have null values as part of
## the language, the burden of ensuring non-nulls was
## shifted to library code dealing with host-interop, to
## ensure variant-making was as fast as possible.
## The null-checking code was left as comments in case I
## ever change my mind.
_ (let [## $is-null (new Label)
visitor (ClassWriter.visitMethod [(i.+ Opcodes.ACC_PUBLIC Opcodes.ACC_STATIC)
"sum_make" "(ILjava/lang/Object;Ljava/lang/Object;)[Ljava/lang/Object;"
(host;null) (host;null)]
writer)
_ (do-to visitor
(MethodVisitor.visitCode [])
## (MethodVisitor.visitVarInsn [Opcodes.ALOAD 2])
## (MethodVisitor.visitJumpInsn [Opcodes.IFNULL $is-null])
(MethodVisitor.visitLdcInsn [(host;l2i 3)])
(MethodVisitor.visitTypeInsn [Opcodes.ANEWARRAY "java/lang/Object"])
(MethodVisitor.visitInsn [Opcodes.DUP])
(MethodVisitor.visitLdcInsn [(host;l2i 0)])
(MethodVisitor.visitVarInsn [Opcodes.ILOAD 0]))
_ (&common;wrap-int visitor)
_ (do-to visitor
(MethodVisitor.visitInsn [Opcodes.AASTORE])
(MethodVisitor.visitInsn [Opcodes.DUP])
(MethodVisitor.visitLdcInsn [(host;l2i 1)])
(MethodVisitor.visitVarInsn [Opcodes.ALOAD 1])
(MethodVisitor.visitInsn [Opcodes.AASTORE])
(MethodVisitor.visitInsn [Opcodes.DUP])
(MethodVisitor.visitLdcInsn [(host;l2i 2)])
(MethodVisitor.visitVarInsn [Opcodes.ALOAD 2])
(MethodVisitor.visitInsn [Opcodes.AASTORE])
(MethodVisitor.visitInsn [Opcodes.ARETURN])
## (MethodVisitor.visitLabel [$is-null])
## (MethodVisitor.visitTypeInsn [Opcodes.NEW "java/lang/IllegalStateException"])
## (MethodVisitor.visitInsn [Opcodes.DUP])
## (MethodVisitor.visitLdcInsn ["Cannot create variant for null pointer"])
## (MethodVisitor.visitMethodInsn [Opcodes.INVOKESPECIAL "java/lang/IllegalStateException" "<init>" "(Ljava/lang/String;)V"])
## (MethodVisitor.visitInsn [Opcodes.ATHROW])
(MethodVisitor.visitMaxs [0 0])
(MethodVisitor.visitEnd []))]
[])]
writer))
(def: #export generate
(Lux &common;Bytecode)
(do Monad<Lux>
[_ (wrap [])
#let [writer (|> (do-to (ClassWriter.new ClassWriter.COMPUTE_MAXS)
(ClassWriter.visit [&common;bytecode-version
($_ i.+ Opcodes.ACC_PUBLIC Opcodes.ACC_FINAL Opcodes.ACC_SUPER)
&common;runtime-class-name (host;null)
"java/lang/Object" (host;null)]))
generate-adt-methods)
bytecode (ClassWriter.toByteArray [] (do-to writer (ClassWriter.visitEnd [])))]
_ (&common;store-class &common;runtime-class-name bytecode)]
(wrap bytecode)))
|
