class RuboCop::Cop::Layout::IndentationStyle

def on_new_investigation
  str_ranges = nil
  processed_source.lines.each.with_index(1) do |line, lineno|
    next unless (range = find_offense(line, lineno))
    # Perform costly calculation only when needed.
    str_ranges ||= string_literal_ranges(processed_source.ast)
    next if in_string_literal?(str_ranges, range)
    add_offense(range) { |corrector| autocorrect(corrector, range) }
  end
end