Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\Serializer\Mapping\Loader;
Chris@0: 
Chris@0: use Symfony\Component\Serializer\Exception\MappingException;
Chris@0: use Symfony\Component\Serializer\Mapping\AttributeMetadata;
Chris@0: use Symfony\Component\Serializer\Mapping\ClassMetadataInterface;
Chris@0: use Symfony\Component\Yaml\Parser;
Chris@0: 
Chris@0: /**
Chris@0:  * YAML File Loader.
Chris@0:  *
Chris@0:  * @author Kévin Dunglas <dunglas@gmail.com>
Chris@0:  */
Chris@0: class YamlFileLoader extends FileLoader
Chris@0: {
Chris@0:     private $yamlParser;
Chris@0: 
Chris@0:     /**
Chris@0:      * An array of YAML class descriptions.
Chris@0:      *
Chris@0:      * @var array
Chris@0:      */
Chris@14:     private $classes;
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function loadClassMetadata(ClassMetadataInterface $classMetadata)
Chris@0:     {
Chris@0:         if (null === $this->classes) {
Chris@0:             $this->classes = $this->getClassesFromYaml();
Chris@0:         }
Chris@0: 
Chris@0:         if (!$this->classes) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         if (!isset($this->classes[$classMetadata->getName()])) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         $yaml = $this->classes[$classMetadata->getName()];
Chris@0: 
Chris@14:         if (isset($yaml['attributes']) && \is_array($yaml['attributes'])) {
Chris@0:             $attributesMetadata = $classMetadata->getAttributesMetadata();
Chris@0: 
Chris@0:             foreach ($yaml['attributes'] as $attribute => $data) {
Chris@0:                 if (isset($attributesMetadata[$attribute])) {
Chris@0:                     $attributeMetadata = $attributesMetadata[$attribute];
Chris@0:                 } else {
Chris@0:                     $attributeMetadata = new AttributeMetadata($attribute);
Chris@0:                     $classMetadata->addAttributeMetadata($attributeMetadata);
Chris@0:                 }
Chris@0: 
Chris@0:                 if (isset($data['groups'])) {
Chris@14:                     if (!\is_array($data['groups'])) {
Chris@0:                         throw new MappingException(sprintf('The "groups" key must be an array of strings in "%s" for the attribute "%s" of the class "%s".', $this->file, $attribute, $classMetadata->getName()));
Chris@0:                     }
Chris@0: 
Chris@0:                     foreach ($data['groups'] as $group) {
Chris@14:                         if (!\is_string($group)) {
Chris@0:                             throw new MappingException(sprintf('Group names must be strings in "%s" for the attribute "%s" of the class "%s".', $this->file, $attribute, $classMetadata->getName()));
Chris@0:                         }
Chris@0: 
Chris@0:                         $attributeMetadata->addGroup($group);
Chris@0:                     }
Chris@0:                 }
Chris@0: 
Chris@0:                 if (isset($data['max_depth'])) {
Chris@17:                     if (!\is_int($data['max_depth'])) {
Chris@0:                         throw new MappingException(sprintf('The "max_depth" value must be an integer in "%s" for the attribute "%s" of the class "%s".', $this->file, $attribute, $classMetadata->getName()));
Chris@0:                     }
Chris@0: 
Chris@0:                     $attributeMetadata->setMaxDepth($data['max_depth']);
Chris@0:                 }
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Return the names of the classes mapped in this file.
Chris@0:      *
Chris@0:      * @return string[] The classes names
Chris@0:      */
Chris@0:     public function getMappedClasses()
Chris@0:     {
Chris@0:         if (null === $this->classes) {
Chris@0:             $this->classes = $this->getClassesFromYaml();
Chris@0:         }
Chris@0: 
Chris@0:         return array_keys($this->classes);
Chris@0:     }
Chris@0: 
Chris@0:     private function getClassesFromYaml()
Chris@0:     {
Chris@0:         if (!stream_is_local($this->file)) {
Chris@0:             throw new MappingException(sprintf('This is not a local file "%s".', $this->file));
Chris@0:         }
Chris@0: 
Chris@0:         if (null === $this->yamlParser) {
Chris@0:             $this->yamlParser = new Parser();
Chris@0:         }
Chris@0: 
Chris@14:         $classes = $this->yamlParser->parseFile($this->file);
Chris@0: 
Chris@0:         if (empty($classes)) {
Chris@17:             return [];
Chris@0:         }
Chris@0: 
Chris@14:         if (!\is_array($classes)) {
Chris@0:             throw new MappingException(sprintf('The file "%s" must contain a YAML array.', $this->file));
Chris@0:         }
Chris@0: 
Chris@0:         return $classes;
Chris@0:     }
Chris@0: }