diff vendor/symfony/serializer/Normalizer/AbstractObjectNormalizer.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/serializer/Normalizer/AbstractObjectNormalizer.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,355 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Serializer\Normalizer;
+
+use Symfony\Component\PropertyAccess\Exception\InvalidArgumentException;
+use Symfony\Component\Serializer\Encoder\JsonEncoder;
+use Symfony\Component\Serializer\Exception\CircularReferenceException;
+use Symfony\Component\Serializer\Exception\LogicException;
+use Symfony\Component\Serializer\Exception\UnexpectedValueException;
+use Symfony\Component\PropertyInfo\PropertyTypeExtractorInterface;
+use Symfony\Component\PropertyInfo\Type;
+use Symfony\Component\Serializer\Mapping\AttributeMetadataInterface;
+use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
+use Symfony\Component\Serializer\NameConverter\NameConverterInterface;
+
+/**
+ * Base class for a normalizer dealing with objects.
+ *
+ * @author Kévin Dunglas <[e-mail]>
+ */
+abstract class AbstractObjectNormalizer extends AbstractNormalizer
+{
+    const ENABLE_MAX_DEPTH = 'enable_max_depth';
+    const DEPTH_KEY_PATTERN = 'depth_%s::%s';
+
+    private $propertyTypeExtractor;
+    private $attributesCache = array();
+
+    public function __construct(ClassMetadataFactoryInterface $classMetadataFactory = null, NameConverterInterface $nameConverter = null, PropertyTypeExtractorInterface $propertyTypeExtractor = null)
+    {
+        parent::__construct($classMetadataFactory, $nameConverter);
+
+        $this->propertyTypeExtractor = $propertyTypeExtractor;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supportsNormalization($data, $format = null)
+    {
+        return is_object($data) && !$data instanceof \Traversable;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws CircularReferenceException
+     */
+    public function normalize($object, $format = null, array $context = array())
+    {
+        if (!isset($context['cache_key'])) {
+            $context['cache_key'] = $this->getCacheKey($format, $context);
+        }
+
+        if ($this->isCircularReference($object, $context)) {
+            return $this->handleCircularReference($object);
+        }
+
+        $data = array();
+        $stack = array();
+        $attributes = $this->getAttributes($object, $format, $context);
+        $class = get_class($object);
+        $attributesMetadata = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null;
+
+        foreach ($attributes as $attribute) {
+            if (null !== $attributesMetadata && $this->isMaxDepthReached($attributesMetadata, $class, $attribute, $context)) {
+                continue;
+            }
+
+            $attributeValue = $this->getAttributeValue($object, $attribute, $format, $context);
+
+            if (isset($this->callbacks[$attribute])) {
+                $attributeValue = call_user_func($this->callbacks[$attribute], $attributeValue);
+            }
+
+            if (null !== $attributeValue && !is_scalar($attributeValue)) {
+                $stack[$attribute] = $attributeValue;
+            }
+
+            $data = $this->updateData($data, $attribute, $attributeValue);
+        }
+
+        foreach ($stack as $attribute => $attributeValue) {
+            if (!$this->serializer instanceof NormalizerInterface) {
+                throw new LogicException(sprintf('Cannot normalize attribute "%s" because the injected serializer is not a normalizer', $attribute));
+            }
+
+            $data = $this->updateData($data, $attribute, $this->serializer->normalize($attributeValue, $format, $context));
+        }
+
+        return $data;
+    }
+
+    /**
+     * Gets and caches attributes for the given object, format and context.
+     *
+     * @param object      $object
+     * @param string|null $format
+     * @param array       $context
+     *
+     * @return string[]
+     */
+    protected function getAttributes($object, $format = null, array $context)
+    {
+        $class = get_class($object);
+        $key = $class.'-'.$context['cache_key'];
+
+        if (isset($this->attributesCache[$key])) {
+            return $this->attributesCache[$key];
+        }
+
+        $allowedAttributes = $this->getAllowedAttributes($object, $context, true);
+
+        if (false !== $allowedAttributes) {
+            if ($context['cache_key']) {
+                $this->attributesCache[$key] = $allowedAttributes;
+            }
+
+            return $allowedAttributes;
+        }
+
+        if (isset($this->attributesCache[$class])) {
+            return $this->attributesCache[$class];
+        }
+
+        return $this->attributesCache[$class] = $this->extractAttributes($object, $format, $context);
+    }
+
+    /**
+     * Extracts attributes to normalize from the class of the given object, format and context.
+     *
+     * @param object      $object
+     * @param string|null $format
+     * @param array       $context
+     *
+     * @return string[]
+     */
+    abstract protected function extractAttributes($object, $format = null, array $context = array());
+
+    /**
+     * Gets the attribute value.
+     *
+     * @param object      $object
+     * @param string      $attribute
+     * @param string|null $format
+     * @param array       $context
+     *
+     * @return mixed
+     */
+    abstract protected function getAttributeValue($object, $attribute, $format = null, array $context = array());
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supportsDenormalization($data, $type, $format = null)
+    {
+        return class_exists($type);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function denormalize($data, $class, $format = null, array $context = array())
+    {
+        if (!isset($context['cache_key'])) {
+            $context['cache_key'] = $this->getCacheKey($format, $context);
+        }
+        $allowedAttributes = $this->getAllowedAttributes($class, $context, true);
+        $normalizedData = $this->prepareForDenormalization($data);
+
+        $reflectionClass = new \ReflectionClass($class);
+        $object = $this->instantiateObject($normalizedData, $class, $context, $reflectionClass, $allowedAttributes, $format);
+
+        foreach ($normalizedData as $attribute => $value) {
+            if ($this->nameConverter) {
+                $attribute = $this->nameConverter->denormalize($attribute);
+            }
+
+            if (($allowedAttributes !== false && !in_array($attribute, $allowedAttributes)) || !$this->isAllowedAttribute($class, $attribute, $format, $context)) {
+                continue;
+            }
+
+            $value = $this->validateAndDenormalize($class, $attribute, $value, $format, $context);
+            try {
+                $this->setAttributeValue($object, $attribute, $value, $format, $context);
+            } catch (InvalidArgumentException $e) {
+                throw new UnexpectedValueException($e->getMessage(), $e->getCode(), $e);
+            }
+        }
+
+        return $object;
+    }
+
+    /**
+     * Sets attribute value.
+     *
+     * @param object      $object
+     * @param string      $attribute
+     * @param mixed       $value
+     * @param string|null $format
+     * @param array       $context
+     */
+    abstract protected function setAttributeValue($object, $attribute, $value, $format = null, array $context = array());
+
+    /**
+     * Validates the submitted data and denormalizes it.
+     *
+     * @param string      $currentClass
+     * @param string      $attribute
+     * @param mixed       $data
+     * @param string|null $format
+     * @param array       $context
+     *
+     * @return mixed
+     *
+     * @throws UnexpectedValueException
+     * @throws LogicException
+     */
+    private function validateAndDenormalize($currentClass, $attribute, $data, $format, array $context)
+    {
+        if (null === $this->propertyTypeExtractor || null === $types = $this->propertyTypeExtractor->getTypes($currentClass, $attribute)) {
+            return $data;
+        }
+
+        $expectedTypes = array();
+        foreach ($types as $type) {
+            if (null === $data && $type->isNullable()) {
+                return;
+            }
+
+            if ($type->isCollection() && null !== ($collectionValueType = $type->getCollectionValueType()) && Type::BUILTIN_TYPE_OBJECT === $collectionValueType->getBuiltinType()) {
+                $builtinType = Type::BUILTIN_TYPE_OBJECT;
+                $class = $collectionValueType->getClassName().'[]';
+
+                if (null !== $collectionKeyType = $type->getCollectionKeyType()) {
+                    $context['key_type'] = $collectionKeyType;
+                }
+            } else {
+                $builtinType = $type->getBuiltinType();
+                $class = $type->getClassName();
+            }
+
+            $expectedTypes[Type::BUILTIN_TYPE_OBJECT === $builtinType && $class ? $class : $builtinType] = true;
+
+            if (Type::BUILTIN_TYPE_OBJECT === $builtinType) {
+                if (!$this->serializer instanceof DenormalizerInterface) {
+                    throw new LogicException(sprintf('Cannot denormalize attribute "%s" for class "%s" because injected serializer is not a denormalizer', $attribute, $class));
+                }
+
+                if ($this->serializer->supportsDenormalization($data, $class, $format)) {
+                    return $this->serializer->denormalize($data, $class, $format, $context);
+                }
+            }
+
+            // JSON only has a Number type corresponding to both int and float PHP types.
+            // PHP's json_encode, JavaScript's JSON.stringify, Go's json.Marshal as well as most other JSON encoders convert
+            // floating-point numbers like 12.0 to 12 (the decimal part is dropped when possible).
+            // PHP's json_decode automatically converts Numbers without a decimal part to integers.
+            // To circumvent this behavior, integers are converted to floats when denormalizing JSON based formats and when
+            // a float is expected.
+            if (Type::BUILTIN_TYPE_FLOAT === $builtinType && is_int($data) && false !== strpos($format, JsonEncoder::FORMAT)) {
+                return (float) $data;
+            }
+
+            if (call_user_func('is_'.$builtinType, $data)) {
+                return $data;
+            }
+        }
+
+        throw new UnexpectedValueException(sprintf('The type of the "%s" attribute for class "%s" must be one of "%s" ("%s" given).', $attribute, $currentClass, implode('", "', array_keys($expectedTypes)), gettype($data)));
+    }
+
+    /**
+     * Sets an attribute and apply the name converter if necessary.
+     *
+     * @param array  $data
+     * @param string $attribute
+     * @param mixed  $attributeValue
+     *
+     * @return array
+     */
+    private function updateData(array $data, $attribute, $attributeValue)
+    {
+        if ($this->nameConverter) {
+            $attribute = $this->nameConverter->normalize($attribute);
+        }
+
+        $data[$attribute] = $attributeValue;
+
+        return $data;
+    }
+
+    /**
+     * Is the max depth reached for the given attribute?
+     *
+     * @param AttributeMetadataInterface[] $attributesMetadata
+     * @param string                       $class
+     * @param string                       $attribute
+     * @param array                        $context
+     *
+     * @return bool
+     */
+    private function isMaxDepthReached(array $attributesMetadata, $class, $attribute, array &$context)
+    {
+        if (
+            !isset($context[static::ENABLE_MAX_DEPTH]) ||
+            !isset($attributesMetadata[$attribute]) ||
+            null === $maxDepth = $attributesMetadata[$attribute]->getMaxDepth()
+        ) {
+            return false;
+        }
+
+        $key = sprintf(static::DEPTH_KEY_PATTERN, $class, $attribute);
+        if (!isset($context[$key])) {
+            $context[$key] = 1;
+
+            return false;
+        }
+
+        if ($context[$key] === $maxDepth) {
+            return true;
+        }
+
+        ++$context[$key];
+
+        return false;
+    }
+
+    /**
+     * Gets the cache key to use.
+     *
+     * @param string|null $format
+     * @param array       $context
+     *
+     * @return bool|string
+     */
+    private function getCacheKey($format, array $context)
+    {
+        try {
+            return md5($format.serialize($context));
+        } catch (\Exception $exception) {
+            // The context cannot be serialized, skip the cache
+            return false;
+        }
+    }
+}