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<?php |
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namespace TheCodingMachine\GraphQL\Controllers; |
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use Doctrine\Common\Annotations\AnnotationException; |
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use Doctrine\Common\Annotations\Reader; |
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use function in_array; |
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use ReflectionClass; |
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use ReflectionMethod; |
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use function strpos; |
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use function substr; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\AbstractRequest; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\Exceptions\ClassNotFoundException; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\Factory; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\Logged; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\Right; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\SourceField; |
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use TheCodingMachine\GraphQL\Controllers\Annotations\Type; |
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class AnnotationReader |
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{ |
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/** |
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* @var Reader |
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*/ |
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private $reader; |
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// In this mode, no exceptions will be thrown for incorrect annotations (unless the name of the annotation we are looking for is part of the docblock) |
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const LAX_MODE = 'LAX_MODE'; |
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// In this mode, exceptions will be thrown for any incorrect annotations. |
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const STRICT_MODE = 'STRICT_MODE'; |
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/** |
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* Classes in those namespaces MUST have valid annotations (otherwise, an error is thrown). |
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* |
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* @var string[] |
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*/ |
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private $strictNamespaces; |
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/** |
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* If true, no exceptions will be thrown for incorrect annotations in code coming from the "vendor/" directory. |
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* |
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* @var string |
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*/ |
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private $mode; |
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/** |
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* AnnotationReader constructor. |
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* @param Reader $reader |
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* @param string $mode One of self::LAX_MODE or self::STRICT_MODE |
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* @param array $strictNamespaces |
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*/ |
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public function __construct(Reader $reader, string $mode = self::STRICT_MODE, array $strictNamespaces = []) |
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{ |
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$this->reader = $reader; |
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if (!in_array($mode, [self::LAX_MODE, self::STRICT_MODE], true)) { |
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throw new \InvalidArgumentException('The mode passed must be one of AnnotationReader::LAX_MODE, AnnotationReader::STRICT_MODE'); |
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} |
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$this->mode = $mode; |
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$this->strictNamespaces = $strictNamespaces; |
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} |
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public function getTypeAnnotation(ReflectionClass $refClass): ?Type |
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{ |
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// TODO: customize the way errors are handled here! |
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try { |
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/** @var Type|null $typeField */ |
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$typeField = $this->getClassAnnotation($refClass, Type::class); |
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} catch (ClassNotFoundException $e) { |
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throw ClassNotFoundException::wrapException($e, $refClass->getName()); |
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} |
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return $typeField; |
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} |
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public function getRequestAnnotation(ReflectionMethod $refMethod, string $annotationName): ?AbstractRequest |
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{ |
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/** @var AbstractRequest|null $queryAnnotation */ |
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$queryAnnotation = $this->getMethodAnnotation($refMethod, $annotationName); |
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return $queryAnnotation; |
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} |
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public function getLoggedAnnotation(ReflectionMethod $refMethod): ?Logged |
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{ |
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/** @var Logged|null $loggedAnnotation */ |
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$loggedAnnotation = $this->getMethodAnnotation($refMethod, Logged::class); |
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return $loggedAnnotation; |
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} |
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public function getRightAnnotation(ReflectionMethod $refMethod): ?Right |
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{ |
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/** @var Right|null $rightAnnotation */ |
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$rightAnnotation = $this->getMethodAnnotation($refMethod, Right::class); |
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return $rightAnnotation; |
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} |
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/** |
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* @return SourceField[] |
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*/ |
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public function getSourceFields(ReflectionClass $refClass): array |
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{ |
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/** @var SourceField[] $sourceFields */ |
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$sourceFields = $this->getClassAnnotations($refClass, SourceField::class); |
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return $sourceFields; |
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} |
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public function getFactoryAnnotation(ReflectionMethod $refMethod): ?Factory |
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{ |
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/** @var Factory|null $factoryAnnotation */ |
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$factoryAnnotation = $this->getMethodAnnotation($refMethod, Factory::class); |
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return $factoryAnnotation; |
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} |
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/** |
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* Returns a class annotation. Finds in the parents if not found in the main class. |
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* |
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* @return object|null |
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*/ |
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private function getClassAnnotation(ReflectionClass $refClass, string $annotationClass) |
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{ |
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do { |
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$type = null; |
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try { |
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$type = $this->reader->getClassAnnotation($refClass, $annotationClass); |
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} catch (AnnotationException $e) { |
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switch ($this->mode) { |
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case self::STRICT_MODE: |
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throw $e; |
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case self::LAX_MODE: |
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if ($this->isErrorImportant($annotationClass, $refClass->getDocComment(), $refClass->getName())) { |
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throw $e; |
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} else { |
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return null; |
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} |
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default: |
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throw new \RuntimeException("Unexpected mode '$this->mode'."); // @codeCoverageIgnore |
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} |
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} |
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if ($type !== null) { |
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return $type; |
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} |
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$refClass = $refClass->getParentClass(); |
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} while ($refClass); |
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return null; |
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} |
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/** |
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* Returns a method annotation and handles correctly errors. |
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* |
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* @return object|null |
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*/ |
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private function getMethodAnnotation(ReflectionMethod $refMethod, string $annotationClass) |
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{ |
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try { |
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return $this->reader->getMethodAnnotation($refMethod, $annotationClass); |
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} catch (AnnotationException $e) { |
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switch ($this->mode) { |
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case self::STRICT_MODE: |
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throw $e; |
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case self::LAX_MODE: |
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if ($this->isErrorImportant($annotationClass, $refMethod->getDocComment(), $refMethod->getDeclaringClass()->getName())) { |
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throw $e; |
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} else { |
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return null; |
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} |
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default: |
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throw new \RuntimeException("Unexpected mode '$this->mode'."); // @codeCoverageIgnore |
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} |
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} |
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} |
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/** |
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* Returns true if the annotation class name is part of the docblock comment. |
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* |
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*/ |
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private function isErrorImportant(string $annotationClass, string $docComment, string $className): bool |
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{ |
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foreach ($this->strictNamespaces as $strictNamespace) { |
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if (strpos($className, $strictNamespace) === 0) { |
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return true; |
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} |
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} |
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$shortAnnotationClass = substr($annotationClass, strrpos($annotationClass, '\\') + 1); |
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return strpos($docComment, '@'.$shortAnnotationClass) !== false; |
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} |
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/** |
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* Returns the class annotations. Finds in the parents too. |
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* |
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* @return object[] |
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*/ |
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public function getClassAnnotations(ReflectionClass $refClass, string $annotationClass): array |
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{ |
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$toAddAnnotations = []; |
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do { |
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try { |
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$allAnnotations = $this->reader->getClassAnnotations($refClass); |
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$toAddAnnotations[] = \array_filter($allAnnotations, function($annotation) use ($annotationClass): bool { |
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return $annotation instanceof $annotationClass; |
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}); |
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} catch (AnnotationException $e) { |
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if ($this->mode === self::STRICT_MODE) { |
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throw $e; |
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} elseif ($this->mode === self::LAX_MODE) { |
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if ($this->isErrorImportant($annotationClass, $refClass->getDocComment(), $refClass->getName())) { |
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throw $e; |
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} |
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} |
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} |
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$refClass = $refClass->getParentClass(); |
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} while ($refClass); |
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if (!empty($toAddAnnotations)) { |
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return array_merge(...$toAddAnnotations); |
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} else { |
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return []; |
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} |
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} |
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} |
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