[Soot-list] Resetting Soot and Line number question

[Barthelemy Dagenais]

I searched through the mailing list archives and I could not find answers 
for these questions.

I would like to use Soot more than once in my application. I read it is 
possible to reset Soot Scene since Soot 2.0, but I cannot find how to do it 
in the API. It seems every time I use the loadNecessaryClasses() method of 
the Scene class, the changes made to the class files are not taken into 
account.

My second question is related to the line number information. I tried the 
Java-To-Jimple parser and saw that source line information (SourceLnPosTag) 
is not directly available for AbstractInstanceInvokeExpr like virtualinvoke 
or interfaceinvoke. By digging a little further, I found it is at least 
available as a tag in the base box unit of this kind of expression. I 
understand that line number information for jimple code that is generated 
from bytecode are bound to the javac specification, but what about jimple 
code generated from java source code? Is there any other expression that may 
not retain line number information?

By the way, thank you very much for this great framework!

Regards,
Barthélémy