class RuboCop::Cop::Performance::IoReadlines

def correction_range(enumerable_call, readlines_call)
  begin_pos = readlines_call.loc.selector.begin_pos
  end_pos = if enumerable_call.method?(:each)
              enumerable_call.loc.expression.end_pos
            else
              enumerable_call.loc.dot.begin_pos
            end
  range_between(begin_pos, end_pos)
end