Doctrine\Common\Annotations\DocParser::collectAnnotationMetadata PHP Method

    private function collectAnnotationMetadata($name)
    {
        if (self::$metadataParser === null) {
            self::$metadataParser = new self();
            self::$metadataParser->setIgnoreNotImportedAnnotations(true);
            self::$metadataParser->setIgnoredAnnotationNames($this->ignoredAnnotationNames);
            self::$metadataParser->setImports(array('enum' => 'Doctrine\\Common\\Annotations\\Annotation\\Enum', 'target' => 'Doctrine\\Common\\Annotations\\Annotation\\Target', 'attribute' => 'Doctrine\\Common\\Annotations\\Annotation\\Attribute', 'attributes' => 'Doctrine\\Common\\Annotations\\Annotation\\Attributes'));
            AnnotationRegistry::registerFile(__DIR__ . '/Annotation/Enum.php');
            AnnotationRegistry::registerFile(__DIR__ . '/Annotation/Target.php');
            AnnotationRegistry::registerFile(__DIR__ . '/Annotation/Attribute.php');
            AnnotationRegistry::registerFile(__DIR__ . '/Annotation/Attributes.php');
        }
        $class = new \ReflectionClass($name);
        $docComment = $class->getDocComment();
        // Sets default values for annotation metadata
        $metadata = array('default_property' => null, 'has_constructor' => null !== ($constructor = $class->getConstructor()) && $constructor->getNumberOfParameters() > 0, 'properties' => array(), 'property_types' => array(), 'attribute_types' => array(), 'targets_literal' => null, 'targets' => Target::TARGET_ALL, 'is_annotation' => false !== strpos($docComment, '@Annotation'));
        // verify that the class is really meant to be an annotation
        if ($metadata['is_annotation']) {
            self::$metadataParser->setTarget(Target::TARGET_CLASS);
            foreach (self::$metadataParser->parse($docComment, 'class @' . $name) as $annotation) {
                if ($annotation instanceof Target) {
                    $metadata['targets'] = $annotation->targets;
                    $metadata['targets_literal'] = $annotation->literal;
                    continue;
                }
                if ($annotation instanceof Attributes) {
                    foreach ($annotation->value as $attribute) {
                        $this->collectAttributeTypeMetadata($metadata, $attribute);
                    }
                }
            }
            // if not has a constructor will inject values into public properties
            if (false === $metadata['has_constructor']) {
                // collect all public properties
                foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC) as $property) {
                    $metadata['properties'][$property->name] = $property->name;
                    if (false === ($propertyComment = $property->getDocComment())) {
                        continue;
                    }
                    $attribute = new Attribute();
                    $attribute->required = false !== strpos($propertyComment, '@Required');
                    $attribute->name = $property->name;
                    $attribute->type = false !== strpos($propertyComment, '@var') && preg_match('/@var\\s+([^\\s]+)/', $propertyComment, $matches) ? $matches[1] : 'mixed';
                    $this->collectAttributeTypeMetadata($metadata, $attribute);
                    // checks if the property has @Enum
                    if (false !== strpos($propertyComment, '@Enum')) {
                        $context = 'property ' . $class->name . "::\$" . $property->name;
                        self::$metadataParser->setTarget(Target::TARGET_PROPERTY);
                        foreach (self::$metadataParser->parse($propertyComment, $context) as $annotation) {
                            if (!$annotation instanceof Enum) {
                                continue;
                            }
                            $metadata['enum'][$property->name]['value'] = $annotation->value;
                            $metadata['enum'][$property->name]['literal'] = !empty($annotation->literal) ? $annotation->literal : $annotation->value;
                        }
                    }
                }
                // choose the first property as default property
                $metadata['default_property'] = reset($metadata['properties']);
            }
        }
        self::$annotationMetadata[$name] = $metadata;
    }