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<?php |
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namespace Spatie\Period; |
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use Iterator; |
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use Countable; |
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use ArrayAccess; |
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class PeriodCollection implements ArrayAccess, Iterator, Countable |
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{ |
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use IterableImplementation; |
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/** @var \Spatie\Period\Period[] */ |
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protected $periods; |
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public function __construct(Period ...$periods) |
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{ |
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$this->periods = $periods; |
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} |
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public function current(): Period |
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{ |
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return $this->periods[$this->position]; |
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} |
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public function overlapSingle(PeriodCollection $periodCollection): PeriodCollection |
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{ |
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$overlaps = new PeriodCollection(); |
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foreach ($this as $period) { |
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foreach ($periodCollection as $otherPeriod) { |
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if (! $period->overlapSingle($otherPeriod)) { |
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continue; |
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} |
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$overlaps[] = $period->overlapSingle($otherPeriod); |
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} |
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} |
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return $overlaps; |
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} |
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public function overlap(PeriodCollection ...$periodCollections): PeriodCollection |
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{ |
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$overlap = clone $this; |
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foreach ($periodCollections as $periodCollection) { |
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$overlap = $overlap->overlapSingle($periodCollection); |
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} |
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return $overlap; |
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} |
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public function boundaries(): ?Period |
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{ |
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$start = null; |
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$end = null; |
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foreach ($this as $period) { |
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if ($start === null || $start > $period->getIncludedStart()) { |
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$start = $period->getStart(); |
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} |
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if ($end === null || $end < $period->getIncludedEnd()) { |
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$end = $period->getEnd(); |
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} |
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} |
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if (! $start || ! $end) { |
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return null; |
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} |
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[$firstPeriod] = $this->periods; |
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return new Period( |
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$start, |
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$end, |
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$firstPeriod->getPrecisionMask(), |
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Boundaries::EXCLUDE_NONE |
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); |
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} |
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public function gaps(): PeriodCollection |
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{ |
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$boundaries = $this->boundaries(); |
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if (! $boundaries) { |
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return new PeriodCollection(); |
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} |
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return $boundaries->diff(...$this); |
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} |
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public function intersect(Period $intersection): PeriodCollection |
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{ |
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$intersected = new PeriodCollection(); |
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foreach ($this as $period) { |
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$overlap = $intersection->overlapSingle($period); |
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if ($overlap === null) { |
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continue; |
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} |
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$intersected[] = $overlap; |
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} |
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return $intersected; |
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} |
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public function add(Period ...$periods): PeriodCollection |
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{ |
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$collection = clone $this; |
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foreach ($periods as $period) { |
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$collection[] = $period; |
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} |
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return $collection; |
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} |
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public function isEmpty(): bool |
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{ |
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return count($this->periods) === 0; |
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} |
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} |
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spatie /
period
This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.