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<?php declare(strict_types=1); |
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namespace Stratadox\EntityState\Internal; |
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use function array_merge as these; |
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use function assert; |
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use function is_object; |
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use Stratadox\EntityState\PropertyState; |
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use Stratadox\IdentityMap\MapsObjectsByIdentity as Map; |
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use Stratadox\IdentityMap\NoSuchObject; |
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use Stratadox\Specification\Contract\Satisfiable; |
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final class ObjectExtractor implements Extractor |
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{ |
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private $next; |
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private $stringifier; |
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private function __construct(Extractor $next, Satisfiable $constraint) |
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{ |
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$this->next = $next; |
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$this->stringifier = $constraint; |
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} |
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public static function withAlternative(Extractor $next): Extractor |
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{ |
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return new self($next, Unsatisfiable::constraint()); |
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} |
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public static function stringifyingWithAlternative( |
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Satisfiable $constraint, |
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Extractor $next |
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): Extractor { |
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return new self($next, $constraint); |
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} |
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public function extract( |
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Name $name, |
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$object, |
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Map $map, |
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Visited $visited, |
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Extractor $base = null |
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): array { |
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if (!is_object($object)) { |
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return $this->next->extract($name, $object, $map, $visited, $base); |
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} |
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assert($base !== null); |
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return $this->objectState($name->for($object), $object, $map, $visited, $base); |
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} |
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/** @throws NoSuchObject */ |
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private function objectState( |
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Name $name, |
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$object, |
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Map $map, |
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Visited $visited, |
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Extractor $base |
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): array { |
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if ($this->stringifier->isSatisfiedBy($object)) { |
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return [PropertyState::with((string) $name, (string) $object)]; |
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} |
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if ($map->hasThe($object)) { |
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return [PropertyState::with((string) $name, $map->idOf($object))]; |
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} |
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$properties = []; |
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foreach (ReflectionProperties::ofThe($object) as $property) { |
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$properties[] = $base->extract( |
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$name->forNested($property), |
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$property->getValue($object), |
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$map, |
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$visited |
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); |
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} |
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if (empty($properties)) { |
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return [PropertyState::with((string) $name, null)]; |
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} |
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return these(...$properties); |
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} |
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} |
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Stratadox /
EntityState
