How to list methods not wrapped in a certain statement?

[markpahulje]

How would you list methods not in a try-catch clause?

var fi2 = new FileInfo(path2);

How to list methods not wrapped in Using statement?

StreamWriter sw = new StreamWriter("hello.txt")

[aeisenberg]

I'm assuming this is in C#. Something like this should work to find method calls not lexically contained by a try-catch.

import csharp

predicate inTryCatch(MethodCall mc) {
  exists(TryStmt ts | ts = mc.getParent*())
    or exists(CatchClause cc | cc = mc.getParent*())
}

from MethodCall mc
where not inTryCatch(mc)
select mc

Of course, this only finds method calls lexically enclosed. Are you looking for method calls that are part of a data flow that is not in a try-catch block? For that you will need to use data-flow analysis.

[markpahulje]

This will suffice, thank you.