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<?php |
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declare(strict_types=1); |
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namespace Frostaly\VarExporter\Encoders; |
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use Frostaly\VarExporter\Contracts\EncoderInterface; |
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use Frostaly\VarExporter\Encoder; |
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use Frostaly\VarExporter\Instantiator; |
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class ObjectEncoder implements EncoderInterface |
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{ |
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/** |
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* {@inheritDoc} |
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*/ |
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public function supports(mixed $value): bool |
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{ |
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if (!is_object($value)) { |
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return false; |
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} |
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$reflector = new \ReflectionClass($value); |
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return !$reflector->isInternal() || !$reflector->isFinal(); |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @param object $object |
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*/ |
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public function encode(Encoder $encoder, mixed $object): array |
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{ |
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[$properties, $privateProperties] = $this->extract($object); |
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return $this->isInstantiable($object, $properties) |
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? $this->encodeConstructor($encoder, $object, $properties) |
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: $this->encodeInstantiator($encoder, $object, $properties, $privateProperties); |
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} |
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/** |
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* Check whether the object can be instantiated with the given parameters. |
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*/ |
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protected function isInstantiable(object $object, array $parameters): bool |
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{ |
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try { |
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$class = $object::class; |
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return $object == new $class(...$parameters); |
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} catch (\Throwable) { |
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return false; |
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} |
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} |
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/** |
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* Create the object using named parameters. |
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*/ |
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protected function encodeConstructor( |
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Encoder $encoder, |
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object $object, |
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array $parameters, |
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): array { |
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$encoded = []; |
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foreach ($parameters as $name => $value) { |
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$encoded[] = [$name . ': ', ...$encoder->encode($value), ',']; |
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} |
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return ['new ' . $object::class . '(', $encoded, ')']; |
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} |
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/** |
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* Delegate the creation of the object to the Instantiator class. |
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*/ |
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protected function encodeInstantiator( |
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Encoder $encoder, |
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object $object, |
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array $properties, |
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array $privateProperties, |
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): array { |
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$encoded = [Instantiator::class . '::construct(' . $object::class . '::class']; |
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empty($properties) |
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?: $encoded = [...$encoded, ', ', ...$encoder->encode($properties)]; |
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empty($privateProperties) |
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?: $encoded = [...$encoded, ', ', ...$encoder->encode($privateProperties)]; |
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return [...$encoded, ')']; |
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} |
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/** |
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* Extract the object state as an associative array. |
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*/ |
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protected function extract(object $object): array |
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{ |
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$values = (array) $object; |
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$defaultValues = (array) Instantiator::instantiate($object::class); |
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foreach ($values as $name => $value) { |
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$hasDefault = array_key_exists($name, $defaultValues); |
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if (!$hasDefault || $defaultValues[$name] !== $value) { |
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preg_match('/^(?:\x00(.*)\x00)?(.*)$/', (string) $name, $matches); |
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in_array($matches[1], ['', '*', $object::class]) |
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? $properties[$matches[2]] = $value |
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: $privateProperties[$matches[1]][$matches[2]] = $value; |
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} |
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} |
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return [$properties ?? [], $privateProperties ?? []]; |
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} |
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} |
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frostaly /
var-exporter
