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<?php |
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declare(strict_types=1); |
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namespace Overblog\GraphQLBundle\Validator; |
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use GraphQL\Type\Definition\InputObjectType; |
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use GraphQL\Type\Definition\ObjectType; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use GraphQL\Type\Definition\Type; |
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use Overblog\GraphQLBundle\Definition\Argument; |
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use Overblog\GraphQLBundle\Definition\ResolverArgs; |
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use function in_array; |
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/** |
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* ValidationNode. |
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* |
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* Holds the input data of the associated to it GraphQL type. Properties will be |
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* created dinamically in runtime. In order to avoid name conflicts all built in |
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* property names are prefixed with double underscores. |
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* |
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* It also contains variables of the resolver context, in which this class was |
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* instantiated. |
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*/ |
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class ValidationNode |
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{ |
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private const KNOWN_VAR_NAMES = ['value', 'args', 'context', 'info']; |
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private ?ValidationNode $__parent = null; |
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private ?string $__fieldName; |
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/** |
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* @var ObjectType|InputObjectType|Type |
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*/ |
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private Type $__type; |
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/** |
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* @var ValidationNode[] |
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*/ |
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private array $__children = []; |
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/** |
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* Arguments of the resolver, where the current validation is being executed. |
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*/ |
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private ?ResolverArgs $__resolverArgs; |
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public function __construct( |
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Type $type, |
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string $field = null, |
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?ValidationNode $parent = null, |
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?ResolverArgs $resolverArgs = null |
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) { |
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$this->__type = $type; |
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$this->__fieldName = $field; |
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$this->__resolverArgs = $resolverArgs; |
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if (null !== $parent) { |
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$this->__parent = $parent; |
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$parent->addChild($this); |
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} |
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} |
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/** |
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* Returns a GraphQL type associated to this object. |
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* |
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* @return ObjectType|InputObjectType|Type |
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*/ |
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public function getType(): Type |
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{ |
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return $this->__type; |
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} |
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/** |
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* Gets the name of the associated GraphQL type. |
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* Shortcut for `getType()->name`. |
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*/ |
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public function getName(): string |
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{ |
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return $this->__type->name; |
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} |
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/** |
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* Returns the field name of the type (only for root type). |
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*/ |
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public function getFieldName(): ?string |
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{ |
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return $this->__fieldName; |
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} |
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public function getParent(): ?ValidationNode |
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{ |
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return $this->__parent; |
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} |
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/** |
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* @internal |
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*/ |
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public function addChild(ValidationNode $child): void |
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{ |
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$this->__children[] = $child; |
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} |
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/** |
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* Traverses up through parent nodes and returns the first matching one. |
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*/ |
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public function findParent(string $name): ?ValidationNode |
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{ |
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$current = $this->__parent; |
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while (null !== $current) { |
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if ($current->getName() === $name) { |
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return $current; |
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} else { |
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$current = $current->getParent(); |
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} |
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} |
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return null; |
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} |
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/** |
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* Returns an argument of the resolver, where this validation is being executed. |
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* |
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* @return ResolveInfo|Argument|mixed|null |
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*/ |
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public function getResolverArg(string $name) |
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{ |
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if (in_array($name, self::KNOWN_VAR_NAMES)) { |
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return $this->__resolverArgs->$name; |
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} |
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return null; |
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} |
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public function __get(string $name): ?string |
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{ |
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return $this->$name ?? null; |
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} |
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} |
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overblog /
GraphQLBundle
