class RuboCop::Cop::Metrics::Utils::CodeLengthCalculator

def classlike_code_length(node)
  return 0 if namespace_module?(node)
  body_line_numbers = line_range(node).to_a[1...-1]
  target_line_numbers = body_line_numbers -
                        line_numbers_of_inner_nodes(node, :module, :class)
  target_line_numbers.reduce(0) do |length, line_number|
    source_line = @processed_source[line_number]
    next length if irrelevant_line?(source_line)
    length + 1
  end
end