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<?php |
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namespace Digia\GraphQL\Type\Definition; |
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use Digia\GraphQL\Error\InvariantException; |
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use Digia\GraphQL\Language\Node\ASTNodeAwareInterface; |
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use Digia\GraphQL\Language\Node\ASTNodeTrait; |
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use Digia\GraphQL\Language\Node\NodeInterface; |
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use Digia\GraphQL\Language\Node\ScalarTypeDefinitionNode; |
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use function Digia\GraphQL\Util\invariant; |
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class ScalarType implements TypeInterface, NamedTypeInterface, LeafTypeInterface, InputTypeInterface, |
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OutputTypeInterface, ASTNodeAwareInterface |
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{ |
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use NameTrait; |
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use DescriptionTrait; |
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use ASTNodeTrait; |
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/** |
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* @var callable |
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*/ |
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protected $serializeCallback; |
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/** |
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* @var callable|null |
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*/ |
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protected $parseValueCallback; |
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/** |
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* @var callable|null |
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*/ |
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protected $parseLiteralCallback; |
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/** |
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* ScalarType constructor. |
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* |
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* @param string $name |
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* @param null|string $description |
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* @param callable|null $serializeCallback |
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* @param callable|null $parseValueCallback |
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* @param callable|null $parseLiteralCallback |
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* @param ScalarTypeDefinitionNode|null $astNode |
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* @throws InvariantException |
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*/ |
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public function __construct( |
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string $name, |
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?string $description, |
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?callable $serializeCallback, |
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?callable $parseValueCallback, |
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?callable $parseLiteralCallback, |
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?ScalarTypeDefinitionNode $astNode |
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) { |
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$this->name = $name; |
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$this->description = $description; |
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$this->serializeCallback = $serializeCallback; |
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$this->parseValueCallback = $parseValueCallback; |
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$this->parseLiteralCallback = $parseLiteralCallback; |
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$this->astNode = $astNode; |
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invariant( |
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\is_callable($this->serializeCallback), |
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\sprintf( |
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'%s must provide "serialize" function. If this custom Scalar ' . |
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'is also used as an input type, ensure "parseValue" and "parseLiteral" ' . |
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'functions are also provided.', |
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$this->name |
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) |
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); |
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if (null !== $this->parseValueCallback || null !== $this->parseLiteralCallback) { |
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invariant( |
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\is_callable($this->parseValueCallback) && \is_callable($this->parseLiteralCallback), |
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\sprintf('%s must provide both "parseValue" and "parseLiteral" functions.', $this->name) |
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); |
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} |
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} |
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/** |
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* @param mixed $value |
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* @return mixed |
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*/ |
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public function serialize($value) |
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{ |
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return \call_user_func($this->serializeCallback, $value); |
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} |
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/** |
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* @param mixed $value |
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* @return mixed|null |
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*/ |
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public function parseValue($value) |
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{ |
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return null !== $this->parseValueCallback |
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? \call_user_func($this->parseValueCallback, $value) |
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: null; |
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} |
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/** |
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* @param NodeInterface $node |
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* @param array|null $variables |
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* @return mixed|null |
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*/ |
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public function parseLiteral(NodeInterface $node, ?array $variables = null) |
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{ |
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return null !== $this->parseLiteralCallback |
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? \call_user_func($this->parseLiteralCallback, $node, $variables) |
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: null; |
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} |
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/** |
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* @param mixed $value |
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* @return bool |
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*/ |
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public function isValidValue($value): bool |
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{ |
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return null !== $this->parseValue($value); |
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} |
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/** |
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* @param NodeInterface $node |
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* @return bool |
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*/ |
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public function isValidLiteral(NodeInterface $node): bool |
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{ |
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return null !== $this->parseLiteral($node); |
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} |
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} |
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digiaonline /
graphql-php
