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

[Eric Bodden]

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
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>



-- 
Eric Bodden
Sable Research Group, McGill University, Montréal, Canada
Got an interesting job offer? http://www.bodden.de/hire-me/