class SimpleCov::LinesClassifier

def self.no_cov_line
  /^(\s*)#(\s*)(:#{SimpleCov.nocov_token}:)/o
end

def self.no_cov_line?(line)
  no_cov_line.match?(line)
rescue ArgumentError
  # E.g., line contains an invalid byte sequence in UTF-8
  false
end

def self.whitespace_line?(line)
  WHITESPACE_OR_COMMENT_LINE.match?(line)
rescue ArgumentError
  # E.g., line contains an invalid byte sequence in UTF-8
  false
end

def classify(lines)
  skipping = false
  lines.map do |line|
    if self.class.no_cov_line?(line)
      skipping = !skipping
      NOT_RELEVANT
    elsif skipping || self.class.whitespace_line?(line)
      NOT_RELEVANT
    else
      RELEVANT
    end
  end
end