public static WhileContext GetContainingWhileContext(ControlFlowContext ctxt, ControlFlowContext stop_ctxt = null)
{
while (ctxt != null)
{
if (ctxt.IsWhileContext() || ctxt == stop_ctxt)
{
return(ctxt as WhileContext);
}
ctxt = ctxt.outer_context;
}
return(null);
}
