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<?php declare(strict_types = 1); |
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namespace Churn\Result; |
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use function array_filter; |
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use SplFixedArray; |
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class HighestScores |
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{ |
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/** |
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* @var SplFixedArray |
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*/ |
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private $scores; |
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/** |
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* @param int $maxSize Max number of results to keep. |
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*/ |
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public function __construct(int $maxSize) |
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{ |
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$this->scores = new SplFixedArray($maxSize); |
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} |
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/** |
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* Returns the results as a normal PHP array. |
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* @return Result[] |
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*/ |
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public function toArray(): array |
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{ |
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return array_filter($this->scores->toArray()); |
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} |
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/** |
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* Add the result if its priority is high enough. |
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* @param Result $result The result for a file. |
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* @return void |
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*/ |
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public function add(Result $result): void |
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{ |
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if ($this->scores[$this->scores->getSize() - 1] !== null |
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&& $result->getPriority() <= $this->scores[$this->scores->getSize() - 1]->getPriority()) { |
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return; |
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} |
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$this->insertAt($result, $this->findPosition($result)); |
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} |
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/** |
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* Returns the position where the result must be inserted. |
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* @param Result $result The result for a file. |
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* @return integer |
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*/ |
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private function findPosition(Result $result): int |
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{ |
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$pos = 0; |
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$this->scores->rewind(); |
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foreach ($this->scores as $score) { |
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if ($score === null || $result->getPriority() > $score->getPriority()) { |
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break; |
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} |
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$pos++; |
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} |
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return $pos; |
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} |
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/** |
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* Inserts the result at a given position and shifts the lower elements. |
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* @param Result $result The result for a file. |
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* @param int $position The position where the result must be inserted. |
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* @return void |
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*/ |
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private function insertAt(Result $result, int $position): void |
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{ |
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for ($i = $this->scores->getSize() - 1; $i > $position; $i--) { |
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$this->scores[$i] = $this->scores[$i - 1]; |
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} |
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$this->scores[$position] = $result; |
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} |
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} |
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bmitch /
churn-php
