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Import com#sun#xml#internal#ws#org#objectweb#asm#ClassWriter
Import com#sun#xml#internal#ws#org#objectweb#asm#FieldVisitor
Import com#sun#xml#internal#ws#org#objectweb#asm#MethodVisitor
Import com#sun#xml#internal#ws#org#objectweb#asm#AnnotationVisitor
Import com#sun#xml#internal#ws#org#objectweb#asm#Label
Implements com#sun#xml#internal#ws#org#objectweb#asm#Opcodes
Public Sub main(ByJava args() As String)
Dim myArgs() As String
myArgs = args
' [Your Source]
Dim fos As New java#io#FileOutputStream(New java#io#File(HomeDir() & System.getProperty("file.separator") & "Program.class"))
fos.write(dump())
End Sub
Public Function dump() AS Byte()
Dim cw As New ClassWriter(0)
Dim fv As FieldVisitor
Dim mv As MethodVisitor
Dim av0 As AnnotationVisitor
Dim z() As String
cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "Program", Nothing, "java/lang/Object", z)
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", Nothing, z)
mv.visitCode()
mv.visitVarInsn(ALOAD, 0)
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V")
mv.visitInsn(RETURN)
mv.visitMaxs(1, 1)
mv.visitEnd()
mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", Nothing, z)
mv.visitCode()
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;")
mv.visitLdcInsn("This is a little Jabaco-program")
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V")
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;")
mv.visitLdcInsn("Counting to 10:")
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V")
mv.visitInsn(ICONST_1)
mv.visitVarInsn(ISTORE, 1)
Dim l0 As New com#sun#xml#internal#ws#org#objectweb#asm#Label
mv.visitLabel(l0)
Dim o1(0) As Object
o1(0) = Opcodes.INTEGER
Dim o2() AS Object
mv.visitFrame(Opcodes.F_APPEND,1, o1, 0, o2)
mv.visitVarInsn(ILOAD, 1)
mv.visitIntInsn(BIPUSH, 10)
Dim l1 As New com#sun#xml#internal#ws#org#objectweb#asm#Label
mv.visitJumpInsn(IF_ICMPGT, l1)
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;")
mv.visitTypeInsn(Opcodes.NEW, "java/lang/StringBuilder")
mv.visitInsn(DUP)
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V")
mv.visitLdcInsn("Number ")
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;")
mv.visitVarInsn(ILOAD, 1)
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(I)Ljava/lang/StringBuilder;")
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;")
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V")
mv.visitIincInsn(1, 1)
mv.visitJumpInsn(Opcodes.GOTO, l0)
mv.visitLabel(l1)
mv.visitFrame(Opcodes.F_CHOP,1, o2, 0, o2)
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;")
mv.visitLdcInsn("End")
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V")
mv.visitInsn(RETURN)
mv.visitMaxs(3, 2)
mv.visitEnd()
cw.visitEnd()
dump = cw.toByteArray()
End Function
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