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// vim:set sw=2 ts=2 sts et:
#include "daterange.hpp"
static std::chrono::year_month_day nextDay(std::chrono::year_month_day ymd) {
return std::chrono::sys_days(ymd) + std::chrono::days(1);
}
// DateRange expresses the date range [from, thru].
DateRange::Iterator &DateRange::Iterator::operator++() {
ymd_ = nextDay(ymd_);
return *this;
}
std::chrono::year_month_day DateRange::Iterator::operator*() const {
return ymd_;
}
std::chrono::year_month_day DateRange::Iterator::ymd() const {
return ymd_;
}
DateRange::Iterator::Iterator(std::chrono::year_month_day ymd) : ymd_(ymd) {}
DateRange::DateRange(std::chrono::year_month_day from, std::chrono::year_month_day thru)
: from_(from), thru_(thru)
{}
DateRange::Iterator DateRange::begin() const {
return DateRange::Iterator(from_);
}
DateRange::Iterator DateRange::end() const {
return DateRange::Iterator(nextDay(thru_));
}
bool DateRange::valid() const {
return from_ <= thru_;
}
std::chrono::year_month_day DateRange::from() const {
return from_;
}
std::chrono::year_month_day DateRange::thru() const {
return thru_;
}
bool operator==(const DateRange::Iterator a, const DateRange::Iterator b) {
return *a == *b;
}
DateRangeSeq::DateRangeSeq(std::initializer_list<DateRange> ranges)
: DateRangeSeq(ranges.begin(), ranges.end())
{}
DateRangeSeq DateRangeSeq::clampFrom(std::chrono::year_month_day from) const {
std::vector<DateRange> new_ranges;
new_ranges.reserve(ranges_.size());
for (const DateRange range : ranges_) {
if (range.from() < from) {
if (range.thru() < from)
continue;
new_ranges.emplace_back(from, range.thru());
}
new_ranges.push_back(range);
}
return DateRangeSeq(new_ranges.begin(), new_ranges.end());
}
DateRangeSeq DateRangeSeq::clampThru(std::chrono::year_month_day thru) const {
std::vector<DateRange> new_ranges;
new_ranges.reserve(ranges_.size());
for (const DateRange range : ranges_) {
if (range.thru() > thru) {
if (range.from() > thru)
continue;
new_ranges.emplace_back(range.from(), thru);
}
new_ranges.push_back(range);
}
return DateRangeSeq(new_ranges.begin(), new_ranges.end());
}
std::vector<DateRange>::const_iterator DateRangeSeq::begin() const {
return ranges_.begin();
}
std::vector<DateRange>::const_iterator DateRangeSeq::end() const {
return ranges_.end();
}
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