[Soot-list] Using Soot as a library / PhaseOptions

[Matthew Hague]

Hi,

Thanks for the reply. 

The problem seems to be that the jap pack is not being run at all.  If i use: 
  
  PhaseOptions.v().setPhaseOption("jb.lp", "on");

then the local packer runs as expected (and does not run if i don't enable
it).  But, if i use:
  
  PhaseOptions.v().setPhaseOption("jap.npc", "on");

there are no null pointer tags (similarly for other jap tools).  I can use:

  PackManager.v().runPacks(); // (or runBodyPacks())

after loading a class.  However, since the jb.lp option does not require the
extra step (which causes further problems for me at the moment...), i suspect
i'm missing something else.

Although i plan to add my own annotation tool, my immediate concern is
getting the null pointer annotator to run.  

Thanks,

Matt


On Wed, Nov 26, 2008 at 01:06:46PM -0500, Eric Bodden wrote:
> Matthew, the "jap" pack is run after all other packs.
> 
> I recommend reading the PLDI tutorial
> (http://www.sable.mcgill.ca/soot/tutorial/pldi03/tutorial.pdf) in
> particular the diagram on page number 100.
> 
> To run your analysis after the jap pack has been applied, simply add
> your transformer to the jap pack.
> 
> Eric
> 
> 
> 2008/11/26 Matthew Hague <Matthew.Hague at comlab.ox.ac.uk>:
> >
> > Hi,
> >
> > I am attempting to use Soot as a library, as in this example from the mailing
> > list:
> >
> >  http://www.sable.mcgill.ca/pipermail/soot-list/2008-July/001862.html
> >
> >  > public static void main(String[] args) {
> >  >
> >  >                if (args.length == 0) {
> >  >                        System.out.println("Usage: java RunLiveAnalysis
> >  > class_to_analyse");
> >  >                        System.exit(0);
> >  >                }
> >  >
> >  >                SootClass sClass = Scene.v().loadClassAndSupport(args[0]);
> >  >
> >  >                sClass.setApplicationClass();
> >  >
> >  >                Iterator methodIt = sClass.getMethods().iterator();
> >  >                while (methodIt.hasNext()) {
> >  >                        SootMethod m = (SootMethod)methodIt.next();
> >  >                        Body b = m.retrieveActiveBody();
> >  >                        ....
> >
> > I would like to make use of the various optimisations and analyses provided
> > by Soot, and be able to add some of my own.
> >
> > If i add a line:
> >
> >  PhaseOptions.v().setPhaseOption("jb.lp", "on");
> >
> > towards the top of the main method, then the local variable packer is
> > (automatically) run on the Jimple retrieved from m.retrieveActiveBody().
> > However, when i try,
> >
> >  PhaseOptions.v().setPhaseOption("jap.npc", "on");
> >
> > I do not get null pointer tags as expected. I have also tried enabling "jap"
> > explicitly, and using Options.v().parse(<options>) to set command line
> > options (instead of using ParseOptions directly), all to no avail.
> >
> > Does anyone know what i might be missing?
> >
> > I can call NullPointerTagger.v().transform(body) each time a body is
> > retrieved, if necessary, but this does not seem like the neatest solution.
> >
> > Thanks,
> >
> > Matthew Hague
> > _______________________________________________
> > Soot-list mailing list
> > Soot-list at sable.mcgill.ca
> > http://mailman.cs.mcgill.ca/mailman/listinfo/soot-list
> >
> 
> 
> 
> -- 
> Eric Bodden
> Sable Research Group, McGill University, Montréal, Canada
> Got an interesting job offer? http://www.bodden.de/hire-me/