311 lines
9.9 KiB
PHP
311 lines
9.9 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Serializer;
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use Symfony\Component\Serializer\Encoder\ChainDecoder;
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use Symfony\Component\Serializer\Encoder\ChainEncoder;
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use Symfony\Component\Serializer\Encoder\EncoderInterface;
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use Symfony\Component\Serializer\Encoder\DecoderInterface;
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use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
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use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
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use Symfony\Component\Serializer\Exception\LogicException;
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use Symfony\Component\Serializer\Exception\UnexpectedValueException;
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/**
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* Serializer serializes and deserializes data.
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*
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* objects are turned into arrays by normalizers.
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* arrays are turned into various output formats by encoders.
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*
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* $serializer->serialize($obj, 'xml')
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* $serializer->decode($data, 'xml')
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* $serializer->denormalize($data, 'Class', 'xml')
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*
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* @author Jordi Boggiano <j.boggiano@seld.be>
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* @author Johannes M. Schmitt <schmittjoh@gmail.com>
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* @author Lukas Kahwe Smith <smith@pooteeweet.org>
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* @author Kévin Dunglas <dunglas@gmail.com>
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*/
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class Serializer implements SerializerInterface, NormalizerInterface, DenormalizerInterface, EncoderInterface, DecoderInterface
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{
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/**
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* @var Encoder\ChainEncoder
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*/
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protected $encoder;
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/**
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* @var Encoder\ChainDecoder
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*/
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protected $decoder;
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/**
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* @var array
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*/
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protected $normalizers = array();
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/**
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* @var array
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*/
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protected $normalizerCache = array();
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/**
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* @var array
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*/
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protected $denormalizerCache = array();
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public function __construct(array $normalizers = array(), array $encoders = array())
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{
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foreach ($normalizers as $normalizer) {
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if ($normalizer instanceof SerializerAwareInterface) {
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$normalizer->setSerializer($this);
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}
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}
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$this->normalizers = $normalizers;
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$decoders = array();
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$realEncoders = array();
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foreach ($encoders as $encoder) {
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if ($encoder instanceof SerializerAwareInterface) {
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$encoder->setSerializer($this);
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}
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if ($encoder instanceof DecoderInterface) {
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$decoders[] = $encoder;
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}
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if ($encoder instanceof EncoderInterface) {
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$realEncoders[] = $encoder;
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}
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}
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$this->encoder = new ChainEncoder($realEncoders);
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$this->decoder = new ChainDecoder($decoders);
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}
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/**
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* {@inheritdoc}
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*/
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final public function serialize($data, $format, array $context = array())
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{
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if (!$this->supportsEncoding($format)) {
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throw new UnexpectedValueException(sprintf('Serialization for the format %s is not supported', $format));
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}
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if ($this->encoder->needsNormalization($format)) {
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$data = $this->normalize($data, $format, $context);
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}
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return $this->encode($data, $format, $context);
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}
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/**
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* {@inheritdoc}
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*/
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final public function deserialize($data, $type, $format, array $context = array())
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{
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if (!$this->supportsDecoding($format)) {
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throw new UnexpectedValueException(sprintf('Deserialization for the format %s is not supported', $format));
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}
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$data = $this->decode($data, $format, $context);
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return $this->denormalize($data, $type, $format, $context);
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}
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/**
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* {@inheritdoc}
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*/
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public function normalize($data, $format = null, array $context = array())
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{
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// If a normalizer supports the given data, use it
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if ($normalizer = $this->getNormalizer($data, $format)) {
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return $normalizer->normalize($data, $format, $context);
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}
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if (null === $data || is_scalar($data)) {
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return $data;
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}
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if (is_object($data) && $this->supportsNormalization($data, $format)) {
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return $this->normalizeObject($data, $format, $context);
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}
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if ($data instanceof \Traversable) {
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$normalized = array();
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foreach ($data as $key => $val) {
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$normalized[$key] = $this->normalize($val, $format, $context);
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}
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return $normalized;
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}
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if (is_object($data)) {
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return $this->normalizeObject($data, $format, $context);
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}
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if (is_array($data)) {
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foreach ($data as $key => $val) {
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$data[$key] = $this->normalize($val, $format, $context);
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}
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return $data;
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}
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throw new UnexpectedValueException(sprintf('An unexpected value could not be normalized: %s', var_export($data, true)));
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}
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/**
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* {@inheritdoc}
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*/
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public function denormalize($data, $type, $format = null, array $context = array())
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{
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return $this->denormalizeObject($data, $type, $format, $context);
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}
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/**
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* {@inheritdoc}
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*/
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public function supportsNormalization($data, $format = null)
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{
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return null !== $this->getNormalizer($data, $format);
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}
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/**
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* {@inheritdoc}
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*/
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public function supportsDenormalization($data, $type, $format = null)
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{
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return null !== $this->getDenormalizer($data, $type, $format);
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}
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/**
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* Returns a matching normalizer.
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*
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* @param mixed $data Data to get the serializer for
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* @param string $format format name, present to give the option to normalizers to act differently based on formats
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*
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* @return NormalizerInterface|null
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*/
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private function getNormalizer($data, $format)
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{
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if ($isObject = is_object($data)) {
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$class = get_class($data);
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if (isset($this->normalizerCache[$class][$format])) {
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return $this->normalizerCache[$class][$format];
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}
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}
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foreach ($this->normalizers as $normalizer) {
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if ($normalizer instanceof NormalizerInterface && $normalizer->supportsNormalization($data, $format)) {
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if ($isObject) {
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$this->normalizerCache[$class][$format] = $normalizer;
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}
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return $normalizer;
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}
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}
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}
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/**
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* Returns a matching denormalizer.
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*
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* @param mixed $data data to restore
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* @param string $class the expected class to instantiate
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* @param string $format format name, present to give the option to normalizers to act differently based on formats
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*
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* @return DenormalizerInterface|null
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*/
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private function getDenormalizer($data, $class, $format)
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{
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if (isset($this->denormalizerCache[$class][$format])) {
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return $this->denormalizerCache[$class][$format];
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}
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foreach ($this->normalizers as $normalizer) {
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if ($normalizer instanceof DenormalizerInterface && $normalizer->supportsDenormalization($data, $class, $format)) {
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$this->denormalizerCache[$class][$format] = $normalizer;
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return $normalizer;
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}
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}
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}
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/**
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* {@inheritdoc}
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*/
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final public function encode($data, $format, array $context = array())
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{
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return $this->encoder->encode($data, $format, $context);
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}
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/**
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* {@inheritdoc}
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*/
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final public function decode($data, $format, array $context = array())
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{
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return $this->decoder->decode($data, $format, $context);
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}
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/**
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* Normalizes an object into a set of arrays/scalars.
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*
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* @param object $object object to normalize
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* @param string $format format name, present to give the option to normalizers to act differently based on formats
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* @param array $context The context data for this particular normalization
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*
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* @return array|string|bool|int|float|null
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*
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* @throws LogicException
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* @throws UnexpectedValueException
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*/
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private function normalizeObject($object, $format, array $context = array())
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{
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if (!$this->normalizers) {
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throw new LogicException('You must register at least one normalizer to be able to normalize objects.');
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}
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if ($normalizer = $this->getNormalizer($object, $format)) {
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return $normalizer->normalize($object, $format, $context);
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}
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throw new UnexpectedValueException(sprintf('Could not normalize object of type %s, no supporting normalizer found.', get_class($object)));
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}
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/**
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* Denormalizes data back into an object of the given class.
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*
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* @param mixed $data data to restore
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* @param string $class the expected class to instantiate
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* @param string $format format name, present to give the option to normalizers to act differently based on formats
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* @param array $context The context data for this particular denormalization
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*
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* @return object
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*
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* @throws LogicException
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* @throws UnexpectedValueException
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*/
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private function denormalizeObject($data, $class, $format, array $context = array())
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{
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if (!$this->normalizers) {
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throw new LogicException('You must register at least one normalizer to be able to denormalize objects.');
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}
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if ($normalizer = $this->getDenormalizer($data, $class, $format)) {
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return $normalizer->denormalize($data, $class, $format, $context);
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}
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throw new UnexpectedValueException(sprintf('Could not denormalize object of type %s, no supporting normalizer found.', $class));
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}
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/**
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* {@inheritdoc}
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*/
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public function supportsEncoding($format)
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{
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return $this->encoder->supportsEncoding($format);
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}
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/**
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* {@inheritdoc}
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*/
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public function supportsDecoding($format)
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{
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return $this->decoder->supportsDecoding($format);
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}
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}
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