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<?php |
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declare(strict_types=1); |
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namespace Andi\GraphQL\ArgumentResolver\Middleware; |
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use Andi\GraphQL\ArgumentResolver\ArgumentResolverInterface; |
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use Andi\GraphQL\Attribute\Argument; |
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use Andi\GraphQL\Common\LazyParserType; |
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use Andi\GraphQL\Common\LazyTypeByReflectionParameter; |
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use Andi\GraphQL\Exception\CantResolveGraphQLTypeException; |
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use Andi\GraphQL\TypeRegistryInterface; |
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use phpDocumentor\Reflection\DocBlock\Tags\Param; |
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use phpDocumentor\Reflection\DocBlockFactory; |
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use ReflectionParameter; |
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use Spiral\Attributes\ReaderInterface; |
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final class ReflectionParameterMiddleware implements MiddlewareInterface |
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{ |
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public const PRIORITY = 3072; |
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public function __construct( |
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private readonly ReaderInterface $reader, |
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private readonly TypeRegistryInterface $typeRegistry, |
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) { |
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} |
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public function process(mixed $argument, ArgumentResolverInterface $argumentResolver): array |
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{ |
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if (! $argument instanceof ReflectionParameter) { |
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return $argumentResolver->resolve($argument); |
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} |
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$attribute = $this->reader->firstParameterMetadata($argument, Argument::class); |
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$config = [ |
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'name' => $this->getArgumentName($argument, $attribute), |
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'description' => $this->getArgumentDescription($argument, $attribute), |
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'type' => $this->getArgumentType($argument, $attribute), |
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'deprecationReason' => $this->getArgumentDeprecationReason($argument, $attribute), |
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]; |
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if ($this->hasDefaultValue($argument, $attribute)) { |
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$config['defaultValue'] = $this->getArgumentDefaultValue($argument, $attribute); |
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} |
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return $config; |
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} |
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private function getArgumentName(ReflectionParameter $parameter, ?Argument $attribute): string |
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{ |
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return $attribute?->name |
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?? $parameter->getName(); |
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} |
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/** |
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* @param ReflectionParameter $parameter |
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* @param Argument|null $attribute |
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* |
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* @return string|null |
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*/ |
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private function getArgumentDescription(ReflectionParameter $parameter, ?Argument $attribute): ?string |
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{ |
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if ($attribute?->description) { |
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return $attribute->description; |
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} |
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if ($docComment = $parameter->getDeclaringFunction()->getDocComment()) { |
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$docBlock = DocBlockFactory::createInstance(['psalm-param' => Param::class])->create($docComment); |
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foreach ($docBlock->getTags() as $tag) { |
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if ($tag instanceof Param && $tag->getVariableName() === $parameter->getName()) { |
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return (string) $tag->getDescription() ?: null; |
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} |
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} |
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} |
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return null; |
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} |
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private function getArgumentType(ReflectionParameter $parameter, ?Argument $attribute): callable |
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{ |
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if ($attribute?->type) { |
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return new LazyParserType($attribute->type, $attribute->mode ?? 0, $this->typeRegistry); |
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} |
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if (! $parameter->hasType()) { |
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throw new CantResolveGraphQLTypeException(\sprintf( |
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'Can\'t resolve GraphQL type for argument "%s"', |
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$parameter->getName() |
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)); |
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} |
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return new LazyTypeByReflectionParameter($parameter, $this->typeRegistry); |
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} |
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/** |
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* @param ReflectionParameter $parameter |
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* @param Argument|null $attribute |
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* |
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* @return string|null |
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*/ |
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private function getArgumentDeprecationReason(ReflectionParameter $parameter, ?Argument $attribute): ?string |
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{ |
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return $attribute?->deprecationReason; |
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} |
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private function hasDefaultValue(ReflectionParameter $parameter, ?Argument $attribute): bool |
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{ |
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return $attribute?->hasDefaultValue() || $parameter->isDefaultValueAvailable(); |
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} |
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private function getArgumentDefaultValue(ReflectionParameter $parameter, ?Argument $attribute): mixed |
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{ |
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if ($attribute?->hasDefaultValue()) { |
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return $attribute->defaultValue; |
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} |
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return $parameter->getDefaultValue(); |
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} |
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} |
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.