class SimpleCov::SourceFile

def build_no_cov_chunks
  no_cov_lines = src.map.with_index(1).select { |line, _index| LinesClassifier.no_cov_line?(line) }
  warn "uneven number of nocov comments detected" if no_cov_lines.size.odd?
  no_cov_lines.each_slice(2).map do |(_line_start, index_start), (_line_end, index_end)|
    index_start..index_end
  end
end