Method DecomposeOh

libs/routing/opening_hours_serdes.cpp:176–270

}

std::vector<osmoh::RuleSequence> OpeningHoursSerDes::DecomposeOh(osmoh::OpeningHours const & oh)
{
  auto const apply = [&](auto & rules, auto const & ranges, auto const & rangeSetter)
  {
    if (ranges.empty())
      return;

    std::vector<osmoh::RuleSequence> originalRules = std::move(rules);
    if (originalRules.empty())
      originalRules.emplace_back();

    rules.clear();
    for (auto const & range : ranges)
    {
      auto const toDo = [&range, &rangeSetter](auto & rule) { rangeSetter(range, rule); };
      for (auto const & originalRule : originalRules)
      {
        auto rule = originalRule;
        toDo(rule);
        rules.emplace_back(std::move(rule));
      }
    }
  };

  std::vector<osmoh::RuleSequence> finalRules;
  for (auto const & rule : oh.GetRule())
  {
    std::vector<osmoh::RuleSequence> rules;

    if (rule.IsTwentyFourHours())
    {
      static auto const kTwentyFourHourRule = GetTwentyFourHourRule();
      finalRules.emplace_back(kTwentyFourHourRule);
      break;
    }

    // Ir rule has just modifier (opening hours: "closed") it is empty but has a useful modifier.
    if (rule.IsEmpty() && UselessModifier(rule))
      continue;

    bool badRule = false;
    apply(rules, rule.GetYears(), [&](osmoh::YearRange const & range, osmoh::RuleSequence & item)
    {
      if (ShouldSkipYear(range, m_currentYear))
        badRule = true;

      item.SetYears({range});
    });

    apply(rules, rule.GetMonths(), [&](osmoh::MonthdayRange const & range, osmoh::RuleSequence & item)
    {
      if (ShouldSkipYear(range, m_currentYear))
        badRule = true;

      item.SetMonths({range});
    });

    if (badRule)