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<?php |
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namespace Vox\Data; |
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use InvalidArgumentException; |
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use Metadata\MetadataFactoryInterface; |
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use Traversable; |
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use Vox\Metadata\PropertyMetadata; |
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class ObjectGraphVisitor implements ObjectGraphVisitorInterface |
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{ |
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/** |
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* @var MetadataFactoryInterface |
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*/ |
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private $metadataFactory; |
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/** |
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* @var PropertyAccessorInterface |
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*/ |
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private $propertyAccessor; |
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/** |
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* @var ObjectVisitorInterface[] |
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*/ |
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private $visitors = []; |
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public function __construct( |
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MetadataFactoryInterface $metadataFactory, |
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PropertyAccessorInterface $propertyAccessor = null |
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) { |
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$this->metadataFactory = $metadataFactory; |
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$this->propertyAccessor = $propertyAccessor; |
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} |
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public function visit($object, array &$context = []) |
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{ |
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if (!is_object($object)) { |
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throw new InvalidArgumentException('can only visit objects'); |
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} |
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$this->doVisit($object, $context); |
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$context['visited'][] = $object; |
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$objectMetadata = $this->metadataFactory->getMetadataForClass(get_class($object)); |
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/* @var $propertyMetadata PropertyMetadata */ |
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foreach ($objectMetadata->propertyMetadata as $propertyMetadata) { |
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$value = $this->propertyAccessor |
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? $this->propertyAccessor->get($object, $propertyMetadata->name) |
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: $propertyMetadata->getValue($object); |
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if (is_array($value) || $value instanceof Traversable) { |
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$this->visitCollection($value, $context); |
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continue; |
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} |
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if (!is_object($value)) { |
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continue; |
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} |
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$this->visit($value, $context); |
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} |
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} |
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private function visitCollection($collection, array &$context) |
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{ |
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foreach ($collection as $item) { |
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if (!is_object($item) || in_array($item, $context['visited'] ?? [], true)) { |
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continue; |
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} |
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$this->visit($item, $context); |
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} |
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} |
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private function doVisit($object, array &$context) |
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{ |
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foreach ($this->visitors as $visitor) { |
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if (in_array($object, $context['visited'] ?? [], true) || !$visitor->canVisit($object)) { |
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continue; |
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} |
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$visitor->visit($object, $context); |
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} |
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} |
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public function addVisitor(ObjectVisitorInterface $visitor): ObjectGraphVisitorInterface |
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{ |
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$this->visitors[] = $visitor; |
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return $this; |
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} |
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} |
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jhonatanTeixeira /
restfull-client-orm
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