Feature request: method-local SourceFile attribute

Hi,

First, congratulations for the development of JSwat. It is the most
accomplished Free Java debugger I have seen.

Since I just subscribed to the list, let me just introduce myself by
saying that I am the main author of the Nice programming language
(http://nice.sf.net). Since Nice is compiled to Java bytecode, my main
interest is to see how JSwat could be used to debug programs written in
Nice, in a combination of Nice and Java, or in general in any language
compiled to Java bytecodes.

I just voted for the bug report about skipping Synthetic methods
(http://www.bluemarsh.com/bugzilla/show_bug.cgi?id=610). That would be a
good step in that direction.

A main issue now has to do with finding source files. Due to the way
methods are compiled in Nice, it will often happen that source code
originating from different source files are compiled as bytecode methods
of a single class. This makes the SourceFile attribute of the class file
useless, because which source to look for depends on the method.
Therefore, I thought that a logical convention would be to allow each
bytecode method to have its own SourceFile attribute, and that JSwat
could use that attribute to look for the file to display. If there is no
such attribute, the class' SourceFile is used, as is done currently.
This way, there should be no compatibility problem with javac compiled
code. I also believe that this convention would be useful for other
non-java languages on the JVM.

My questions to the JSwat developers: would you agree with jswat
implementing this feature? How hard would it be to implement?

Daniel