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<?php |
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namespace Zenstruck\Foundry; |
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use Symfony\Component\PropertyAccess\Exception\ExceptionInterface as PropertyAccessException; |
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use Symfony\Component\PropertyAccess\PropertyAccess; |
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use Symfony\Component\PropertyAccess\PropertyAccessor; |
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/** |
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* @author Kevin Bond <[email protected]> |
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*/ |
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final class Instantiator |
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{ |
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/** @var PropertyAccessor|null */ |
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private static $propertyAccessor; |
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/** @var bool */ |
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private $withoutConstructor = false; |
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/** @var bool */ |
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private $allowExtraAttributes = false; |
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/** @var bool */ |
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private $alwaysForceProperties = false; |
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public function __invoke(array $attributes, string $class): object |
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{ |
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$object = $this->instantiate($class, $attributes); |
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foreach ($attributes as $attribute => $value) { |
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if (0 === \mb_strpos($attribute, 'optional:')) { |
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continue; |
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} |
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if ($this->alwaysForceProperties) { |
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try { |
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self::forceSet($object, $attribute, $value); |
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} catch (\InvalidArgumentException $e) { |
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if (!$this->allowExtraAttributes) { |
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throw $e; |
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} |
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} |
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continue; |
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} |
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if (0 === \mb_strpos($attribute, 'force:')) { |
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self::forceSet($object, \mb_substr($attribute, 6), $value); |
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continue; |
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} |
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try { |
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self::propertyAccessor()->setValue($object, $attribute, $value); |
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} catch (PropertyAccessException $e) { |
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// see if attribute was snake/kebab cased |
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try { |
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self::propertyAccessor()->setValue($object, self::camel($attribute), $value); |
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} catch (PropertyAccessException $e) { |
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if (!$this->allowExtraAttributes) { |
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throw new \InvalidArgumentException(\sprintf('Cannot set attribute "%s" for object "%s" (not public and no setter).', $attribute, $class), 0, $e); |
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} |
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} |
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} |
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} |
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return $object; |
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} |
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/** |
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* Instantiate objects without calling the constructor. |
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*/ |
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public function withoutConstructor(): self |
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{ |
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$this->withoutConstructor = true; |
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return $this; |
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} |
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/** |
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* Ignore attributes that can't be set to object. |
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*/ |
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public function allowExtraAttributes(): self |
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{ |
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$this->allowExtraAttributes = true; |
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return $this; |
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} |
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/** |
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* Always force properties, never use setters (still uses constructor unless disabled). |
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*/ |
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public function alwaysForceProperties(): self |
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{ |
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$this->alwaysForceProperties = true; |
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return $this; |
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} |
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/** |
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* @param mixed $value |
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* |
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* @throws \InvalidArgumentException if property does not exist for $object |
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*/ |
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public static function forceSet(object $object, string $property, $value): void |
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{ |
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self::accessibleProperty($object, $property)->setValue($object, $value); |
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} |
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/** |
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* @return mixed |
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*/ |
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public static function forceGet(object $object, string $property) |
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{ |
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return self::accessibleProperty($object, $property)->getValue($object); |
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} |
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private static function propertyAccessor(): PropertyAccessor |
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{ |
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return self::$propertyAccessor ?: self::$propertyAccessor = PropertyAccess::createPropertyAccessor(); |
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} |
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private static function accessibleProperty(object $object, string $name): \ReflectionProperty |
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{ |
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$class = new \ReflectionClass($object); |
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// try fetching first by exact name, if not found, try camel-case |
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if (!$property = self::reflectionProperty($class, $name)) { |
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$property = self::reflectionProperty($class, self::camel($name)); |
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} |
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if (!$property) { |
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throw new \InvalidArgumentException(\sprintf('Class "%s" does not have property "%s".', $class->getName(), $name)); |
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} |
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if (!$property->isPublic()) { |
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$property->setAccessible(true); |
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} |
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return $property; |
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} |
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private static function reflectionProperty(\ReflectionClass $class, string $name): ?\ReflectionProperty |
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{ |
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try { |
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return $class->getProperty($name); |
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} catch (\ReflectionException $e) { |
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if ($class = $class->getParentClass()) { |
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return self::reflectionProperty($class, $name); |
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} |
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} |
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return null; |
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} |
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/** |
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* Check if parameter value was passed as the exact name - if not, try snake-cased, then kebab-cased versions. |
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*/ |
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private static function attributeNameForParameter(\ReflectionParameter $parameter, array $attributes): ?string |
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{ |
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// try exact |
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$name = $parameter->getName(); |
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if (\array_key_exists($name, $attributes)) { |
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return $name; |
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} |
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// try snake case |
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$name = self::snake($name); |
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if (\array_key_exists($name, $attributes)) { |
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return $name; |
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} |
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// try kebab case |
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$name = \str_replace('_', '-', $name); |
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if (\array_key_exists($name, $attributes)) { |
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return $name; |
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} |
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return null; |
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} |
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/** |
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* @see https://github.com/symfony/symfony/blob/a73523b065221b6b93cd45bf1cc7c59e7eb2dcdf/src/Symfony/Component/String/AbstractUnicodeString.php#L156 |
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* |
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* @todo use Symfony/String once stable |
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*/ |
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private static function camel(string $string): string |
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{ |
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return \str_replace(' ', '', \preg_replace_callback('/\b./u', static function($m) use (&$i) { |
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return 1 === ++$i ? ('İ' === $m[0] ? 'i̇' : \mb_strtolower($m[0], 'UTF-8')) : \mb_convert_case($m[0], MB_CASE_TITLE, 'UTF-8'); |
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}, \preg_replace('/[^\pL0-9]++/u', ' ', $string))); |
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} |
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/** |
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* @see https://github.com/symfony/symfony/blob/a73523b065221b6b93cd45bf1cc7c59e7eb2dcdf/src/Symfony/Component/String/AbstractUnicodeString.php#L361 |
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* |
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* @todo use Symfony/String once stable |
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*/ |
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private static function snake(string $string): string |
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{ |
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$string = self::camel($string); |
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/** |
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* @see https://github.com/symfony/symfony/blob/a73523b065221b6b93cd45bf1cc7c59e7eb2dcdf/src/Symfony/Component/String/AbstractUnicodeString.php#L369 |
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*/ |
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$string = \preg_replace_callback('/\b./u', static function(array $m): string { |
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return \mb_convert_case($m[0], MB_CASE_TITLE, 'UTF-8'); |
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}, $string, 1); |
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return \mb_strtolower(\preg_replace(['/(\p{Lu}+)(\p{Lu}\p{Ll})/u', '/([\p{Ll}0-9])(\p{Lu})/u'], '\1_\2', $string), 'UTF-8'); |
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} |
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private function instantiate(string $class, array &$attributes): object |
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{ |
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$class = new \ReflectionClass($class); |
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$constructor = $class->getConstructor(); |
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314 |
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if ($this->withoutConstructor || !$constructor || !$constructor->isPublic()) { |
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return $class->newInstanceWithoutConstructor(); |
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} |
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$arguments = []; |
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foreach ($constructor->getParameters() as $parameter) { |
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$name = self::attributeNameForParameter($parameter, $attributes); |
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if (\array_key_exists($name, $attributes)) { |
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$arguments[] = $attributes[$name]; |
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} elseif ($parameter->isDefaultValueAvailable()) { |
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$arguments[] = $parameter->getDefaultValue(); |
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} else { |
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throw new \InvalidArgumentException(\sprintf('Missing constructor argument "%s" for "%s".', $parameter->getName(), $class->getName())); |
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} |
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// unset attribute so it isn't used when setting object properties |
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unset($attributes[$name]); |
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} |
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return $class->newInstance(...$arguments); |
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} |
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} |
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|
zenstruck /
foundry
