New Rule T0033: Swap the logic to use positive conditions instead

[pavel-mikula-sonarsource]

Coding style:

Use positive logic.

if(!empty)  // Noncompliant
  return value;
else
  return null;

return !empty // Noncompliant
  ? value;
  : null;

return !condition && !condition && !condition // Noncompliant
  ? value
  : null;

return !condition && (condition || condition) // Compliant
  ? value
  : null

return !condition && condition // Compliant
  ? value
  : null