class RuboCop::Cop::Style::BarePercentLiterals

def check(node)
  return if node.heredoc?
  return unless node.loc.respond_to?(:begin)
  return unless node.loc.begin
  source = node.loc.begin.source
  if requires_percent_q?(source)
    add_offense_for_wrong_style(node, 'Q', '')
  elsif requires_bare_percent?(source)
    add_offense_for_wrong_style(node, '', 'Q')
  end
end