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;
Chris@0: 
Chris@0: use Symfony\Component\Serializer\Encoder\ChainDecoder;
Chris@0: use Symfony\Component\Serializer\Encoder\ChainEncoder;
Chris@0: use Symfony\Component\Serializer\Encoder\EncoderInterface;
Chris@0: use Symfony\Component\Serializer\Encoder\DecoderInterface;
Chris@0: use Symfony\Component\Serializer\Normalizer\DenormalizerAwareInterface;
Chris@0: use Symfony\Component\Serializer\Normalizer\NormalizerAwareInterface;
Chris@0: use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
Chris@0: use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
Chris@0: use Symfony\Component\Serializer\Exception\LogicException;
Chris@0: use Symfony\Component\Serializer\Exception\UnexpectedValueException;
Chris@0: 
Chris@0: /**
Chris@0:  * Serializer serializes and deserializes data.
Chris@0:  *
Chris@0:  * objects are turned into arrays by normalizers.
Chris@0:  * arrays are turned into various output formats by encoders.
Chris@0:  *
Chris@0:  * $serializer->serialize($obj, 'xml')
Chris@0:  * $serializer->decode($data, 'xml')
Chris@0:  * $serializer->denormalize($data, 'Class', 'xml')
Chris@0:  *
Chris@0:  * @author Jordi Boggiano <j.boggiano@seld.be>
Chris@0:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0:  * @author Lukas Kahwe Smith <smith@pooteeweet.org>
Chris@0:  * @author Kévin Dunglas <dunglas@gmail.com>
Chris@0:  */
Chris@0: class Serializer implements SerializerInterface, NormalizerInterface, DenormalizerInterface, EncoderInterface, DecoderInterface
Chris@0: {
Chris@0:     /**
Chris@0:      * @var Encoder\ChainEncoder
Chris@0:      */
Chris@0:     protected $encoder;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var Encoder\ChainDecoder
Chris@0:      */
Chris@0:     protected $decoder;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var array
Chris@0:      */
Chris@0:     protected $normalizers = array();
Chris@0: 
Chris@0:     /**
Chris@0:      * @var array
Chris@0:      *
Chris@0:      * @deprecated since 3.1 will be removed in 4.0
Chris@0:      */
Chris@0:     protected $normalizerCache = array();
Chris@0: 
Chris@0:     /**
Chris@0:      * @var array
Chris@0:      *
Chris@0:      * @deprecated since 3.1 will be removed in 4.0
Chris@0:      */
Chris@0:     protected $denormalizerCache = array();
Chris@0: 
Chris@0:     public function __construct(array $normalizers = array(), array $encoders = array())
Chris@0:     {
Chris@0:         foreach ($normalizers as $normalizer) {
Chris@0:             if ($normalizer instanceof SerializerAwareInterface) {
Chris@0:                 $normalizer->setSerializer($this);
Chris@0:             }
Chris@0: 
Chris@0:             if ($normalizer instanceof DenormalizerAwareInterface) {
Chris@0:                 $normalizer->setDenormalizer($this);
Chris@0:             }
Chris@0: 
Chris@0:             if ($normalizer instanceof NormalizerAwareInterface) {
Chris@0:                 $normalizer->setNormalizer($this);
Chris@0:             }
Chris@0:         }
Chris@0:         $this->normalizers = $normalizers;
Chris@0: 
Chris@0:         $decoders = array();
Chris@0:         $realEncoders = array();
Chris@0:         foreach ($encoders as $encoder) {
Chris@0:             if ($encoder instanceof SerializerAwareInterface) {
Chris@0:                 $encoder->setSerializer($this);
Chris@0:             }
Chris@0:             if ($encoder instanceof DecoderInterface) {
Chris@0:                 $decoders[] = $encoder;
Chris@0:             }
Chris@0:             if ($encoder instanceof EncoderInterface) {
Chris@0:                 $realEncoders[] = $encoder;
Chris@0:             }
Chris@0:         }
Chris@0:         $this->encoder = new ChainEncoder($realEncoders);
Chris@0:         $this->decoder = new ChainDecoder($decoders);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     final public function serialize($data, $format, array $context = array())
Chris@0:     {
Chris@0:         if (!$this->supportsEncoding($format)) {
Chris@0:             throw new UnexpectedValueException(sprintf('Serialization for the format %s is not supported', $format));
Chris@0:         }
Chris@0: 
Chris@0:         if ($this->encoder->needsNormalization($format)) {
Chris@0:             $data = $this->normalize($data, $format, $context);
Chris@0:         }
Chris@0: 
Chris@0:         return $this->encode($data, $format, $context);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     final public function deserialize($data, $type, $format, array $context = array())
Chris@0:     {
Chris@0:         if (!$this->supportsDecoding($format)) {
Chris@0:             throw new UnexpectedValueException(sprintf('Deserialization for the format %s is not supported', $format));
Chris@0:         }
Chris@0: 
Chris@0:         $data = $this->decode($data, $format, $context);
Chris@0: 
Chris@0:         return $this->denormalize($data, $type, $format, $context);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function normalize($data, $format = null, array $context = array())
Chris@0:     {
Chris@0:         // If a normalizer supports the given data, use it
Chris@0:         if ($normalizer = $this->getNormalizer($data, $format)) {
Chris@0:             return $normalizer->normalize($data, $format, $context);
Chris@0:         }
Chris@0: 
Chris@0:         if (null === $data || is_scalar($data)) {
Chris@0:             return $data;
Chris@0:         }
Chris@0: 
Chris@0:         if (is_array($data) || $data instanceof \Traversable) {
Chris@0:             $normalized = array();
Chris@0:             foreach ($data as $key => $val) {
Chris@0:                 $normalized[$key] = $this->normalize($val, $format, $context);
Chris@0:             }
Chris@0: 
Chris@0:             return $normalized;
Chris@0:         }
Chris@0: 
Chris@0:         if (is_object($data)) {
Chris@0:             if (!$this->normalizers) {
Chris@0:                 throw new LogicException('You must register at least one normalizer to be able to normalize objects.');
Chris@0:             }
Chris@0: 
Chris@0:             throw new UnexpectedValueException(sprintf('Could not normalize object of type %s, no supporting normalizer found.', get_class($data)));
Chris@0:         }
Chris@0: 
Chris@0:         throw new UnexpectedValueException(sprintf('An unexpected value could not be normalized: %s', var_export($data, true)));
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function denormalize($data, $type, $format = null, array $context = array())
Chris@0:     {
Chris@0:         return $this->denormalizeObject($data, $type, $format, $context);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function supportsNormalization($data, $format = null)
Chris@0:     {
Chris@0:         return null !== $this->getNormalizer($data, $format);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function supportsDenormalization($data, $type, $format = null)
Chris@0:     {
Chris@0:         return null !== $this->getDenormalizer($data, $type, $format);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns a matching normalizer.
Chris@0:      *
Chris@0:      * @param mixed  $data   Data to get the serializer for
Chris@0:      * @param string $format format name, present to give the option to normalizers to act differently based on formats
Chris@0:      *
Chris@0:      * @return NormalizerInterface|null
Chris@0:      */
Chris@0:     private function getNormalizer($data, $format)
Chris@0:     {
Chris@0:         foreach ($this->normalizers as $normalizer) {
Chris@0:             if ($normalizer instanceof NormalizerInterface && $normalizer->supportsNormalization($data, $format)) {
Chris@0:                 return $normalizer;
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns a matching denormalizer.
Chris@0:      *
Chris@0:      * @param mixed  $data   data to restore
Chris@0:      * @param string $class  the expected class to instantiate
Chris@0:      * @param string $format format name, present to give the option to normalizers to act differently based on formats
Chris@0:      *
Chris@0:      * @return DenormalizerInterface|null
Chris@0:      */
Chris@0:     private function getDenormalizer($data, $class, $format)
Chris@0:     {
Chris@0:         foreach ($this->normalizers as $normalizer) {
Chris@0:             if ($normalizer instanceof DenormalizerInterface && $normalizer->supportsDenormalization($data, $class, $format)) {
Chris@0:                 return $normalizer;
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     final public function encode($data, $format, array $context = array())
Chris@0:     {
Chris@0:         return $this->encoder->encode($data, $format, $context);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     final public function decode($data, $format, array $context = array())
Chris@0:     {
Chris@0:         return $this->decoder->decode($data, $format, $context);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Denormalizes data back into an object of the given class.
Chris@0:      *
Chris@0:      * @param mixed  $data    data to restore
Chris@0:      * @param string $class   the expected class to instantiate
Chris@0:      * @param string $format  format name, present to give the option to normalizers to act differently based on formats
Chris@0:      * @param array  $context The context data for this particular denormalization
Chris@0:      *
Chris@0:      * @return object
Chris@0:      *
Chris@0:      * @throws LogicException
Chris@0:      * @throws UnexpectedValueException
Chris@0:      */
Chris@0:     private function denormalizeObject($data, $class, $format, array $context = array())
Chris@0:     {
Chris@0:         if (!$this->normalizers) {
Chris@0:             throw new LogicException('You must register at least one normalizer to be able to denormalize objects.');
Chris@0:         }
Chris@0: 
Chris@0:         if ($normalizer = $this->getDenormalizer($data, $class, $format)) {
Chris@0:             return $normalizer->denormalize($data, $class, $format, $context);
Chris@0:         }
Chris@0: 
Chris@0:         throw new UnexpectedValueException(sprintf('Could not denormalize object of type %s, no supporting normalizer found.', $class));
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function supportsEncoding($format)
Chris@0:     {
Chris@0:         return $this->encoder->supportsEncoding($format);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function supportsDecoding($format)
Chris@0:     {
Chris@0:         return $this->decoder->supportsDecoding($format);
Chris@0:     }
Chris@0: }