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<?php |
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namespace Digia\GraphQL\Provider; |
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use Digia\GraphQL\GraphQL; |
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use Digia\GraphQL\Language\AST\Node\BooleanValueNode; |
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use Digia\GraphQL\Language\AST\Node\FloatValueNode; |
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use Digia\GraphQL\Language\AST\Node\IntValueNode; |
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use Digia\GraphQL\Language\AST\Node\NodeInterface; |
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use Digia\GraphQL\Language\AST\Node\StringValueNode; |
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use Digia\GraphQL\Language\AST\NodeKindEnum; |
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use Digia\GraphQL\Type\Definition\TypeNameEnum; |
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use const Digia\GraphQL\Type\MAX_INT; |
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use const Digia\GraphQL\Type\MIN_INT; |
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use League\Container\ServiceProvider\AbstractServiceProvider; |
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use function Digia\GraphQL\Type\GraphQLScalarType; |
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class ScalarTypesProvider extends AbstractServiceProvider |
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{ |
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/** |
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* @var array |
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*/ |
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protected $provides = [ |
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GraphQL::BOOLEAN, |
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GraphQL::FLOAT, |
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GraphQL::INT, |
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GraphQL::ID, |
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GraphQL::STRING, |
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]; |
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/** |
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* @inheritdoc |
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*/ |
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public function register() |
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{ |
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/** |
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* @param $value |
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* @return bool |
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* @throws \TypeError |
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*/ |
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function coerceBoolean($value): bool |
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{ |
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if (!is_scalar($value)) { |
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throw new \TypeError(sprintf('Boolean cannot represent a non-scalar value: %s', $value)); |
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} |
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return (bool)$value; |
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} |
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$this->container->add(GraphQL::BOOLEAN, function () { |
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return GraphQLScalarType([ |
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'name' => TypeNameEnum::BOOLEAN, |
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'description' => 'The `Boolean` scalar type represents `true` or `false`.', |
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'serialize' => function ($value) { |
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return coerceBoolean($value); |
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}, |
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'parseValue' => function ($value) { |
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return coerceBoolean($value); |
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}, |
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'parseLiteral' => function (NodeInterface $astNode) { |
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/** @var BooleanValueNode $astNode */ |
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return $astNode->getKind() === NodeKindEnum::BOOLEAN ? $astNode->getValue() : null; |
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}, |
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]); |
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}, true/* $shared */); |
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/** |
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* @param $value |
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* @return float |
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* @throws \TypeError |
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*/ |
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function coerceFloat($value): float |
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{ |
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if ($value === '') { |
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throw new \TypeError('Float cannot represent non numeric value: (empty string)'); |
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} |
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if (is_numeric($value) || \is_bool($value)) { |
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return (float)$value; |
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} |
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throw new \TypeError(sprintf('Float cannot represent non numeric value: %s', $value)); |
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} |
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$this->container->add(GraphQL::FLOAT, function () { |
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return GraphQLScalarType([ |
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'name' => TypeNameEnum::FLOAT, |
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'description' => |
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'The `Float` scalar type represents signed double-precision fractional ' . |
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'values as specified by ' . |
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'[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point).', |
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'serialize' => function ($value) { |
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return coerceFloat($value); |
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}, |
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'parseValue' => function ($value) { |
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return coerceFloat($value); |
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}, |
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'parseLiteral' => function (NodeInterface $astNode) { |
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/** @var FloatValueNode $astNode */ |
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return $astNode->getKind() === NodeKindEnum::FLOAT || $astNode->getKind() === NodeKindEnum::INT |
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? $astNode->getValue() |
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: null; |
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}, |
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]); |
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}, true/* $shared */); |
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/** |
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* @param $value |
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* @return int |
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* @throws \TypeError |
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*/ |
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function coerceInt($value) |
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{ |
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if ($value === '') { |
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throw new \TypeError('Int cannot represent non 32-bit signed integer value: (empty string)'); |
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} |
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if (\is_bool($value)) { |
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$value = (int)$value; |
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} |
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if (!\is_int($value) || $value > MAX_INT || $value < MIN_INT) { |
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throw new \TypeError(sprintf('Int cannot represent non 32-bit signed integer value: %s', $value)); |
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} |
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$intValue = (int)$value; |
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$floatValue = (float)$value; |
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if ($floatValue != $intValue || floor($floatValue) !== $floatValue) { |
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throw new \TypeError(sprintf('Int cannot represent non-integer value: %s', $value)); |
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} |
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return $intValue; |
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} |
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$this->container->add(GraphQL::INT, function () { |
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return GraphQLScalarType([ |
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'name' => TypeNameEnum::INT, |
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'description' => |
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'The `Int` scalar type represents non-fractional signed whole numeric ' . |
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'values. Int can represent values between -(2^31) and 2^31 - 1.', |
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'serialize' => function ($value) { |
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return coerceInt($value); |
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}, |
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'parseValue' => function ($value) { |
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return coerceInt($value); |
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}, |
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'parseLiteral' => function (NodeInterface $astNode) { |
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/** @var IntValueNode $astNode */ |
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return $astNode->getKind() === NodeKindEnum::INT ? $astNode->getValue() : null; |
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}, |
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]); |
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}, true/* $shared */); |
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/** |
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* @param $value |
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* @return string |
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* @throws \TypeError |
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*/ |
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function coerceString($value): string |
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{ |
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if ($value === null) { |
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return 'null'; |
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} |
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if ($value === true) { |
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return 'true'; |
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} |
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if ($value === false) { |
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return 'false'; |
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} |
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if (!is_scalar($value)) { |
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throw new \TypeError('String cannot represent a non-scalar value'); |
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} |
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return (string)$value; |
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} |
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$this->container->add(GraphQL::ID, function () { |
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return GraphQLScalarType([ |
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'name' => TypeNameEnum::ID, |
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'description' => |
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'The `ID` scalar type represents a unique identifier, often used to ' . |
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'refetch an object or as key for a cache. The ID type appears in a JSON ' . |
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'response as a String; however, it is not intended to be human-readable. ' . |
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'When expected as an input type, any string (such as `"4"`) or integer ' . |
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'(such as `4`) input value will be accepted as an ID.', |
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'serialize' => function ($value) { |
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return coerceString($value); |
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}, |
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'parseValue' => function ($value) { |
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return coerceString($value); |
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}, |
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'parseLiteral' => function (NodeInterface $astNode) { |
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/** @var StringValueNode $astNode */ |
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return $astNode->getKind() === NodeKindEnum::STRING || $astNode->getKind() === NodeKindEnum::INT |
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? $astNode->getValue() |
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: null; |
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}, |
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]); |
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}, true/* $shared */); |
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$this->container->add(GraphQL::STRING, function () { |
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return GraphQLScalarType([ |
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'name' => TypeNameEnum::STRING, |
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'description' => |
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'The `String` scalar type represents textual data, represented as UTF-8 ' . |
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'character sequences. The String type is most often used by GraphQL to ' . |
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'represent free-form human-readable text.', |
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'serialize' => function ($value) { |
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return coerceString($value); |
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}, |
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'parseValue' => function ($value) { |
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return coerceString($value); |
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}, |
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'parseLiteral' => function (NodeInterface $astNode) { |
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/** @var StringValueNode $astNode */ |
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return $astNode->getKind() === NodeKindEnum::STRING ? $astNode->getValue() : null; |
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}, |
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]); |
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}, true/* $shared */); |
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} |
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} |
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