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<?php |
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namespace Remorhaz\UniLex\RegExp\FSM; |
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use Remorhaz\UniLex\Exception; |
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class RangeSet |
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{ |
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/** |
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* @var Range[] |
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*/ |
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private $rangeList = []; |
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public static function loadUnsafe(Range ...$rangeList): self |
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{ |
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$rangeSet = new self(); |
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$rangeSet->rangeList = $rangeList; |
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return $rangeSet; |
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} |
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/** |
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* RangeSet constructor. |
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* |
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* @param Range ...$rangeList |
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* @throws Exception |
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*/ |
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public function __construct(Range ...$rangeList) |
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{ |
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if (!empty($rangeList)) { |
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$this->addRange(...$rangeList); |
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} |
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} |
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/** |
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* @param array ...$rangeDataList |
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* @return RangeSet |
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* @throws Exception |
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*/ |
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public static function import(array ...$rangeDataList): self |
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{ |
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return new self(...Range::importList(...$rangeDataList)); |
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} |
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public function export(): array |
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{ |
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$rangeDataList = []; |
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foreach ($this->getRanges() as $range) { |
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$rangeDataList[] = $range->export(); |
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} |
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return $rangeDataList; |
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} |
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/** |
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* @param Range ...$rangeList |
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* @throws Exception |
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*/ |
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public function addRange(Range ...$rangeList): void |
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{ |
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foreach ($rangeList as $range) { |
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$this->mergeSingleRange($range); |
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} |
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} |
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/** |
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* @return Range[] |
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*/ |
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public function getRanges(): array |
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{ |
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return $this->rangeList; |
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} |
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public function isEmpty(): bool |
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{ |
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return empty($this->rangeList); |
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} |
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/** |
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* @param Range $range |
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* @throws Exception |
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*/ |
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private function mergeSingleRange(Range $range): void |
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{ |
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if (empty($this->rangeList)) { |
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$this->rangeList = [$range]; |
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return; |
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} |
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$newRangeList = []; |
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foreach ($this->rangeList as $existingRange) { |
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if ($existingRange->containsStartOf($range) || $range->follows($existingRange)) { |
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$range = $range->copyAfterStartOf($existingRange); |
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continue; |
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} |
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if ($existingRange->containsFinishOf($range) || $existingRange->follows($range)) { |
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$range = $range->copyBeforeFinishOf($existingRange); |
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continue; |
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} |
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$newRangeList[] = $existingRange; |
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} |
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$newRangeList[] = $range; |
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$this->setSortedRangeList(...$newRangeList); |
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} |
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private function setSortedRangeList(Range ...$rangeList): void |
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{ |
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$sortByFrom = function (Range $rangeOne, Range $rangeTwo): int { |
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return $rangeOne->getStart() <=> $rangeTwo->getStart(); |
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}; |
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usort($rangeList, $sortByFrom); |
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$this->rangeList = $rangeList; |
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} |
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} |
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remorhaz /
php-unilex
