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<?php |
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namespace Smoren\Containers\Structs; |
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use ArrayIterator; |
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use Countable; |
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use IteratorAggregate; |
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class GraphTraversePath implements IteratorAggregate, Countable |
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{ |
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/** |
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* @var GraphLink[] |
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*/ |
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protected array $links; |
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/** |
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* GraphTraversePath constructor. |
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* @param GraphLink[] $links |
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*/ |
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public function __construct(array $links) |
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{ |
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$this->links = $links; |
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} |
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/** |
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* Returns first item of path |
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* @return GraphItem |
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*/ |
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public function getFirstItem(): GraphItem |
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{ |
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return $this->links[0]->getLeftItem(); |
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} |
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/** |
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* Returns last item of path |
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* @return GraphItem |
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*/ |
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public function getLastItem(): GraphItem |
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{ |
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return $this->links[count($this->links)-1]->getRightItem(); |
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} |
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/** |
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* Reverse path |
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* @param bool $clone need clone object |
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* @param bool $cloneItems need clone items |
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* @return GraphTraversePath |
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*/ |
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public function reverse(bool $clone = false, bool $cloneItems = false): self |
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{ |
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if($clone) { |
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$path = clone $this; |
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} else { |
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$path = $this; |
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} |
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$path->links = array_reverse($path->links); |
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foreach($path->links as $link) { |
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$link->swap($cloneItems); |
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} |
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return $path; |
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} |
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/** |
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* @inheritDoc |
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* @return ArrayIterator |
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*/ |
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public function getIterator(): ArrayIterator |
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{ |
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return new ArrayIterator($this->links); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function count(): int |
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{ |
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return count($this->links); |
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} |
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/** |
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* Representates as array |
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* @param bool $itemIdsOnly |
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* @return array |
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*/ |
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public function toArray(bool $itemIdsOnly = false): array |
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{ |
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$result = []; |
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foreach($this->links as $link) { |
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if($itemIdsOnly) { |
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$result[] = $link->getLeftItem()->getId(); |
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} else { |
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$result[] = $link->toArray(); |
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} |
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} |
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if($itemIdsOnly && isset($link)) { |
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$result[] = $link->getRightItem()->getId(); |
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} |
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return $result; |
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} |
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/** |
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* Clones object |
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*/ |
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public function __clone() |
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{ |
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foreach($this->links as $i => $link) { |
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$this->links[$i] = clone $link; |
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} |
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} |
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} |
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Smoren /
containers-php
