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<?php |
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declare(strict_types=1); |
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namespace JMS\Serializer; |
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use JMS\Serializer\Exception\NotAcceptableException; |
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use JMS\Serializer\Exception\RuntimeException; |
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use JMS\Serializer\Metadata\ClassMetadata; |
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use JMS\Serializer\Metadata\PropertyMetadata; |
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use JMS\Serializer\Metadata\StaticPropertyMetadata; |
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use JMS\Serializer\Visitor\SerializationVisitorInterface; |
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final class JsonSerializationVisitor extends AbstractVisitor implements SerializationVisitorInterface |
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{ |
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/** |
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* @var int |
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*/ |
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private $options = JSON_PRESERVE_ZERO_FRACTION; |
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/** |
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* @var array |
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*/ |
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private $dataStack = []; |
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/** |
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* @var \ArrayObject |
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*/ |
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private $data; |
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public function __construct( |
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int $options = JSON_PRESERVE_ZERO_FRACTION |
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) { |
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$this->dataStack = []; |
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$this->options = $options; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitNull($data, array $type) |
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{ |
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return null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitString(string $data, array $type) |
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{ |
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return $data; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitBoolean(bool $data, array $type) |
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{ |
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return $data; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitInteger(int $data, array $type) |
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{ |
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return $data; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitDouble(float $data, array $type) |
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{ |
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return $data; |
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} |
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/** |
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* @param array $data |
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* @param array $type |
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* |
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* @return array|\ArrayObject |
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*/ |
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public function visitArray(array $data, array $type) |
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{ |
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\array_push($this->dataStack, $data); |
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$rs = isset($type['params'][1]) ? new \ArrayObject() : []; |
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$isList = isset($type['params'][0]) && !isset($type['params'][1]); |
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$elType = $this->getElementType($type); |
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foreach ($data as $k => $v) { |
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try { |
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$v = $this->navigator->accept($v, $elType); |
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} catch (NotAcceptableException $e) { |
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continue; |
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} |
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if ($isList) { |
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$rs[] = $v; |
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} else { |
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$rs[$k] = $v; |
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} |
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} |
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\array_pop($this->dataStack); |
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return $rs; |
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} |
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public function startVisitingObject(ClassMetadata $metadata, object $data, array $type): void |
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{ |
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\array_push($this->dataStack, $this->data); |
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$this->data = true === $metadata->isMap ? new \ArrayObject() : []; |
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} |
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/** |
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* @return array|\ArrayObject |
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*/ |
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public function endVisitingObject(ClassMetadata $metadata, object $data, array $type) |
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{ |
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$rs = $this->data; |
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$this->data = \array_pop($this->dataStack); |
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if (true !== $metadata->isList && empty($rs)) { |
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return new \ArrayObject(); |
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} |
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return $rs; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitProperty(PropertyMetadata $metadata, $v): void |
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{ |
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try { |
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$v = $this->navigator->accept($v, $metadata->type); |
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} catch (NotAcceptableException $e) { |
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return; |
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} |
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if (true === $metadata->skipWhenEmpty && ($v instanceof \ArrayObject || \is_array($v)) && 0 === count($v)) { |
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return; |
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} |
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if ($metadata->inline) { |
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if (\is_array($v) || ($v instanceof \ArrayObject)) { |
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// concatenate the two array-like structures |
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// is there anything faster? |
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foreach ($v as $key => $value) { |
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$this->data[$key] = $value; |
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} |
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} |
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} else { |
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$this->data[$metadata->serializedName] = $v; |
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} |
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} |
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public function visitStaticProperty(string $name, $v): void |
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{ |
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$this->visitProperty(new StaticPropertyMetadata('', $name, $v), $v); |
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} |
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/** |
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* @deprecated Will be removed in 3.0 |
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* |
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* Checks if some data key exists. |
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*/ |
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public function hasData(string $key): bool |
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{ |
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return isset($this->data[$key]); |
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} |
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/** |
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* @deprecated Use `::visitProperty(new StaticPropertyMetadata('', 'name', 'value'), 'value')` instead |
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* |
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* Allows you to replace existing data on the current object element. |
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* |
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* @param mixed $value This value must either be a regular scalar, or an array. |
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* It must not contain any objects anymore. |
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*/ |
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public function setData(string $key, $value): void |
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{ |
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$this->data[$key] = $value; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getResult($data) |
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{ |
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$result = @json_encode($data, $this->options); |
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switch (json_last_error()) { |
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case JSON_ERROR_NONE: |
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return $result; |
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case JSON_ERROR_UTF8: |
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throw new RuntimeException('Your data could not be encoded because it contains invalid UTF8 characters.'); |
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default: |
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throw new RuntimeException(sprintf('An error occurred while encoding your data (error code %d).', json_last_error())); |
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} |
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} |
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} |
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a mixed type is assigned to a property that is type hinted more strictly.
For example, imagine you have a variable
$accountId
that can either hold an Id object or false (if there is no account id yet). Your code now assigns that value to theid
property of an instance of theAccount
class. This class holds a proper account, so the id value must no longer be false.Either this assignment is in error or a type check should be added for that assignment.