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<?php |
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declare(strict_types=1); |
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namespace Overblog\GraphQLBundle\Resolver; |
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use GraphQL\Type\Definition\Type; |
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use Overblog\GraphQLBundle\Event\Events; |
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use Overblog\GraphQLBundle\Event\TypeLoadedEvent; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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class TypeResolver extends AbstractResolver |
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{ |
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private $cache = []; |
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/** @var string|null */ |
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private $currentSchemaName; |
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/** @var EventDispatcherInterface */ |
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private $dispatcher; |
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102 |
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public function setDispatcher(EventDispatcherInterface $dispatcher): void |
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{ |
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$this->dispatcher = $dispatcher; |
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} |
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public function setCurrentSchemaName(?string $currentSchemaName): void |
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{ |
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$this->currentSchemaName = $currentSchemaName; |
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} |
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106 |
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protected function onLoadSolution($solution): void |
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{ |
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if (null !== $this->dispatcher) { |
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$this->dispatcher->dispatch(Events::TYPE_LOADED, new TypeLoadedEvent($solution, $this->currentSchemaName)); |
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} |
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} |
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/** |
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* @param string $alias |
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* |
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* @return Type |
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*/ |
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public function resolve($alias): ?Type |
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{ |
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if (null === $alias) { |
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return null; |
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} |
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if (!isset($this->cache[$alias])) { |
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$type = $this->string2Type($alias); |
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$this->cache[$alias] = $type; |
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} |
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return $this->cache[$alias]; |
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} |
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private function string2Type(string $alias): Type |
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{ |
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if (null !== ($type = $this->wrapTypeIfNeeded($alias))) { |
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return $type; |
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} |
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return $this->baseType($alias); |
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} |
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private function baseType($alias): Type |
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{ |
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$type = $this->getSolution($alias); |
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if (null === $type) { |
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throw new UnresolvableException( |
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\sprintf('Could not found type with alias "%s". Do you forget to define it?', $alias) |
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); |
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} |
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return $type; |
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} |
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private function wrapTypeIfNeeded($alias): ?Type |
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{ |
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// Non-Null |
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if ('!' === $alias[\strlen($alias) - 1]) { |
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return Type::nonNull($this->string2Type(\substr($alias, 0, -1))); |
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} |
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// List |
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if ($this->hasNeedListOfWrapper($alias)) { |
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return Type::listOf($this->string2Type(\substr($alias, 1, -1))); |
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} |
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return null; |
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} |
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private function hasNeedListOfWrapper($alias): bool |
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{ |
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if ('[' === $alias[0]) { |
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$got = $alias[\strlen($alias) - 1]; |
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if (']' !== $got) { |
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throw new UnresolvableException( |
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\sprintf('Malformed ListOf wrapper type "%s" expected "]" but got "%s".', $alias, \json_encode($got)) |
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); |
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} |
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return true; |
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} |
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return false; |
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} |
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protected function supportedSolutionClass(): ?string |
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{ |
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return Type::class; |
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} |
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} |
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overblog /
GraphQLBundle
