1<?php
2
3namespace Drupal\serialization\Normalizer;
4
5use Drupal\Core\TypedData\ComplexDataInterface;
6use Drupal\Core\TypedData\TypedDataInternalPropertiesHelper;
7
8/**
9 * Converts the Drupal entity object structures to a normalized array.
10 *
11 * This is the default Normalizer for entities. All formats that have Encoders
12 * registered with the Serializer in the DIC will be normalized with this
13 * class unless another Normalizer is registered which supersedes it. If a
14 * module wants to use format-specific or class-specific normalization, then
15 * that module can register a new Normalizer and give it a higher priority than
16 * this one.
17 */
18class ComplexDataNormalizer extends NormalizerBase {
19
20  /**
21   * {@inheritdoc}
22   */
23  protected $supportedInterfaceOrClass = ComplexDataInterface::class;
24
25  /**
26   * {@inheritdoc}
27   */
28  public function normalize($object, $format = NULL, array $context = []) {
29    $attributes = [];
30    // $object will not always match $supportedInterfaceOrClass.
31    // @see \Drupal\serialization\Normalizer\EntityNormalizer
32    // Other normalizers that extend this class may only provide $object that
33    // implements \Traversable.
34    if ($object instanceof ComplexDataInterface) {
35      // If there are no properties to normalize, just normalize the value.
36      $object = !empty($object->getProperties(TRUE))
37        ? TypedDataInternalPropertiesHelper::getNonInternalProperties($object)
38        : $object->getValue();
39    }
40    /** @var \Drupal\Core\TypedData\TypedDataInterface $property */
41    foreach ($object as $name => $property) {
42      $attributes[$name] = $this->serializer->normalize($property, $format, $context);
43    }
44    return $attributes;
45  }
46
47}
48