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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\LogicException; |
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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\Visitor\DeserializationVisitorInterface; |
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final class JsonDeserializationVisitor extends AbstractVisitor implements DeserializationVisitorInterface |
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{ |
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/** |
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* @var int |
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*/ |
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private $options; |
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/** |
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* @var int |
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*/ |
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private $depth; |
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/** |
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* @var \SplStack |
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*/ |
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private $objectStack; |
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/** |
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* @var object|null |
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*/ |
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private $currentObject; |
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public function __construct( |
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int $options = 0, |
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int $depth = 512 |
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) { |
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$this->objectStack = new \SplStack(); |
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$this->options = $options; |
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$this->depth = $depth; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitNull($data, array $type) |
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{ |
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return null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitString($data, array $type): string |
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{ |
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$this->assertValueCanBeCastToString($data); |
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return (string) $data; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitBoolean($data, array $type): bool |
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{ |
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return (bool) $data; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitInteger($data, array $type): int |
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{ |
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$this->assertValueCanBeCastToInt($data); |
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return (int) $data; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitDouble($data, array $type): float |
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{ |
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$this->assertValueCanCastToFloat($data); |
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return (float) $data; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function visitArray($data, array $type): array |
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{ |
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if (!\is_array($data)) { |
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throw new RuntimeException(sprintf('Expected array, but got %s: %s', \gettype($data), json_encode($data))); |
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} |
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// If no further parameters were given, keys/values are just passed as is. |
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if (!$type['params']) { |
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return $data; |
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} |
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switch (\count($type['params'])) { |
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case 1: // Array is a list. |
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$listType = $type['params'][0]; |
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$result = []; |
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foreach ($data as $v) { |
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$result[] = $this->navigator->accept($v, $listType); |
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} |
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return $result; |
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case 2: // Array is a map. |
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[$keyType, $entryType] = $type['params']; |
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$result = []; |
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foreach ($data as $k => $v) { |
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$result[$this->navigator->accept($k, $keyType)] = $this->navigator->accept($v, $entryType); |
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} |
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return $result; |
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default: |
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throw new RuntimeException(sprintf('Array type cannot have more than 2 parameters, but got %s.', json_encode($type['params']))); |
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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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public function visitDiscriminatorMapProperty($data, ClassMetadata $metadata): string |
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{ |
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if (isset($data[$metadata->discriminatorFieldName])) { |
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return (string) $data[$metadata->discriminatorFieldName]; |
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} |
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throw new LogicException(sprintf( |
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'The discriminator field name "%s" for base-class "%s" was not found in input data.', |
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$metadata->discriminatorFieldName, |
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$metadata->name, |
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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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public function startVisitingObject(ClassMetadata $metadata, object $object, array $type): void |
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{ |
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$this->setCurrentObject($object); |
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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, $data) |
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{ |
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$name = $metadata->serializedName; |
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if (null === $data) { |
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return; |
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} |
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if (!\is_array($data)) { |
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throw new RuntimeException(sprintf('Invalid data %s (%s), expected "%s".', json_encode($data), $metadata->type['name'], $metadata->class)); |
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} |
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if (true === $metadata->inline) { |
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if (!$metadata->type) { |
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throw RuntimeException::noMetadataForProperty($metadata->class, $metadata->name); |
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} |
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return $this->navigator->accept($data, $metadata->type); |
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} |
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if (!array_key_exists($name, $data)) { |
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throw new NotAcceptableException(); |
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} |
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if (!$metadata->type) { |
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throw RuntimeException::noMetadataForProperty($metadata->class, $metadata->name); |
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} |
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return null !== $data[$name] ? $this->navigator->accept($data[$name], $metadata->type) : null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function endVisitingObject(ClassMetadata $metadata, $data, array $type): object |
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{ |
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$obj = $this->currentObject; |
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$this->revertCurrentObject(); |
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return $obj; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getResult($data) |
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{ |
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unset($this->navigator); |
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return $data; |
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} |
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public function setCurrentObject(object $object): void |
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{ |
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$this->objectStack->push($this->currentObject); |
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$this->currentObject = $object; |
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} |
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public function getCurrentObject(): ?object |
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{ |
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return $this->currentObject; |
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} |
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public function revertCurrentObject(): ?object |
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{ |
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return $this->currentObject = $this->objectStack->pop(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function prepare($str) |
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{ |
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$decoded = json_decode($str, true, $this->depth, $this->options); |
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switch (json_last_error()) { |
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case JSON_ERROR_NONE: |
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return $decoded; |
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case JSON_ERROR_DEPTH: |
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throw new RuntimeException('Could not decode JSON, maximum stack depth exceeded.'); |
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case JSON_ERROR_STATE_MISMATCH: |
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throw new RuntimeException('Could not decode JSON, underflow or the nodes mismatch.'); |
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case JSON_ERROR_CTRL_CHAR: |
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throw new RuntimeException('Could not decode JSON, unexpected control character found.'); |
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case JSON_ERROR_SYNTAX: |
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throw new RuntimeException('Could not decode JSON, syntax error - malformed JSON.'); |
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case JSON_ERROR_UTF8: |
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throw new RuntimeException('Could not decode JSON, malformed UTF-8 characters (incorrectly encoded?)'); |
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default: |
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throw new RuntimeException('Could not decode JSON.'); |
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} |
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} |
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} |
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