[Soot-list] How to get a "this" reference?

[Eric Bodden]

Hi Kanad.

> // Get the getClass() method
> SootClass pClass = thisMethod.getDeclaringClass();
>  while(pClass.hasSuperclass())
>  {
>       pClass = pClass.getSuperclass();
>  }

There's no need to walk the hierarchy. getClass() is declared on
java.lang.Object. Hence, you can just do this:
pClass = Scene.v().getSootClass("java.lang.Object");

>  SootMethod gcCall = pClass.getMethod("java.lang.Class getClass()");
>
> // Assign "tmpClass = getClass();"
>  Local tmpClass = Jimple.v().newLocal("temp",
> RefType.v("java.lang.Class"));

The above may break if your code already contains a local called
"temp". It is safer to use a soot.javaToJimple.LocalGenerator. This
class generates fresh locals.

>  body.getLocals().add(tmpRef);
>  AssignStmt toAssign = Jimple.v().newAssignStmt(#####, \\ What to use here,
> is what I haven't figured out
>                             Jimple.v().newVirtualInvokeExpr(tmpRef,
> gcCall.makeRef()));

First create a fresh Jimple local with the type of "this". Let's call
this local x.

Then assign to x an IdentityStmt containing a ThisRef. After the
assignment, x will hold a reference to "this".

Eric