Scala Compiler question

*bump*

Andres Almiray wrote:
>
> Hi,
>
> I've been doing a series of experiments to generate Scala friendly classes
> from Java.
> As you know the following Scala class:
>
> class ScalaPerson(var name:String)
>
> is compiled to the following byte code:
>
> Compiled from "ScalaPerson.scala"
> public class ScalaPerson extends java.lang.Object implements
> scala.ScalaObject{
> private java.lang.String name;
> public ScalaPerson(java.lang.String);
> public void name_$eq(java.lang.String);
> public java.lang.String name();
> public int $tag() throws java.rmi.RemoteException;
> }
>
> with that info in mind I create a JavaPerson class whose byte code output
> is pretty much the same as ScalaPerson plus get/setName following the
> JavaBeans convention:
>
> Compiled from "JavaPerson.java"
> public class JavaPerson extends java.lang.Object implements
> scala.ScalaObject{
> private java.lang.String name;
> public JavaPerson(java.lang.String);
> public void setName(java.lang.String);
> public void name_$eq(java.lang.String);
> public java.lang.String getName();
> public java.lang.String name();
> public int $tag();
> }
>
> The Java code not surprisingly is very verbose
>
> import scala.ScalaObject;
> public class JavaPerson implements ScalaObject {
> private String name;
>
> public JavaPerson( String name ) {
> this.name = name;
> }
>
> public void setName( String name ) {
> this.name = name;
> }
>
> public void name_$eq( String name ) {
> setName(name);
> }
>
> public String getName() {
> return name;
> }
>
> public String name() {
> return getName();
> }
>
> public int $tag() {
> return 0;
> }
> }
>
> Now the problem comes when using JavaPerson from Scala
>
> object Output {
> def main(args: Array[String]) {
> var sperson: ScalaPerson = new ScalaPerson("Scala")
> println(sperson.name)
>
> var jperson: JavaPerson = new JavaPerson("Java")
> println(jperson.name)
>
> sperson.name = "ScalaScala"
> println(sperson.name)
>
> // jperson.name = "JavaJava"
> jperson.name_$eq( "JavaJava")
> println(jperson.name)
> }
> }
>
> when the comment is removed the compiler yields the following error
>
> Output.scala:12: error: reassignment to val
> jperson.name = "JavaJava"
> ^
> one error found
>
> scalac -version -> Scala compiler version 2.7.3.final -- Copyright
> 2002-2009, LAMP/EPFL
> javac -version -> javac 1.6.0_12
>
> I'll appreciate any pointers you can give me, thanks!
>