[Soot-list] How can I define my own Body?

[Marc Miltenberger]

Hi there,
 I guess you do want to modify an already existing body rather than
declare a new, own body?

 Using getUnits() on the body returns a PatchingChain of units.
 Use the insertBefore-method to insert a new JAssignmentStmt ($i = 123).

 For the Invoke Stmts, you can get the invoke expression through
getInvokeExpr(). Afterwards, you can set the concrete argument via setArg.

Your code could look like this

//Create and add a new local i
Local iLocal = new JimpleLocal("$i", IntType.v());
body.getLocals().add(iLocal);


InvokeStmt invokeStmt = ...;
//Replace the actual parameter of the invoke expr
InvokeExpr expr = invokeStmt.getInvokeExpr();
Value arg = expr.getArg(0);
expr.setArg(0, iLocal);

//Adds the assignment to i right before the invoke expression.
JAssignStmt assign = new JAssignStmt(iLocal, arg);
body.getUnits().insertBefore(assign, invokeStmt);


Adapt the code as you like.

Marc

Am 16.04.2015 um 08:30 schrieb 润青杨:
> Hello guys,
>     I meet some problems.
>    Jimple is great. But now I need to modify jimple to adapt my system.
>    for example:
> 
>    Jimple body:
>    method(123); -->  virtualinvoke <xxx, method(123)>
>   
>    What I want:
>    method(123); ---> $i = 123;
>                                virtualinvoke <xxx, method($i)>
> 
> 
>    how can I do that?
> 
> Thanks,
> Rainkin
>   
> 
> 
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