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<?php |
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declare(strict_types=1); |
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namespace Borodulin\Container\Autowire; |
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use Borodulin\Container\ContainerException; |
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use Borodulin\Container\NotFoundException; |
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use Psr\Container\ContainerInterface; |
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class DependencyResolver |
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{ |
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/** |
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* @var AutowireItemProvider |
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*/ |
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private $itemProvider; |
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public function __construct(AutowireItemProvider $itemProvider) |
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{ |
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$this->itemProvider = $itemProvider; |
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} |
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public function resolveId($id): object |
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{ |
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if ($this->itemProvider->isResolved($id)) { |
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return $this->itemProvider->getResolved($id); |
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} |
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$this->itemProvider->tryResolve($id); |
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if (class_exists($id)) { |
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$reflection = new \ReflectionClass($id); |
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if (!$reflection->isInstantiable()) { |
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throw new ContainerException("$id is not instantiable."); |
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} |
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$args = null; |
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$constructor = $reflection->getConstructor(); |
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if (null !== $constructor) { |
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$args = $this->resolveParameters($constructor->getParameters()); |
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} |
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$instance = $args ? $reflection->newInstanceArgs($args) : $reflection->newInstance(); |
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$this->itemProvider->setResolved($id, $instance); |
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return $instance; |
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} else { |
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throw new NotFoundException($id); |
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} |
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} |
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public function resolveCallableArgs(callable $callable): array |
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{ |
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$reflection = new \ReflectionFunction(\Closure::fromCallable($callable)); |
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return $this->resolveParameters($reflection->getParameters()); |
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} |
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/** |
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* @param \ReflectionParameter[] $parameters |
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* |
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* @throws ContainerException |
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* @throws \ReflectionException |
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*/ |
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private function resolveParameters(array $parameters): array |
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{ |
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$args = []; |
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$parameterBag = $this->itemProvider->getContainer()->getParameterBag(); |
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foreach ($parameters as $parameter) { |
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if (null !== $parameterBag) { |
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if ($this->resolveParameterBag($args, $parameterBag, $parameter)) { |
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continue; |
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} |
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} |
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if ($parameter->isVariadic()) { |
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$this->resolveVariadic($args, $parameter); |
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} elseif ($parameter->isDefaultValueAvailable()) { |
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$args[] = $parameter->getDefaultValue(); |
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} elseif ($parameter->getClass()) { |
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$args[] = $this->resolveClass($parameter->getClass()->getName()); |
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} else { |
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throw new ContainerException(sprintf('Unable to autowire parameter %s', $parameter->getName())); |
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} |
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} |
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return $args; |
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} |
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private function findAllImplementors(string $class): array |
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{ |
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$result = []; |
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foreach ($this->itemProvider->getIds() as $id) { |
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if (class_exists($id)) { |
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$reflection = new \ReflectionClass($id); |
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if ($reflection->implementsInterface($class) || $reflection->isSubclassOf($class)) { |
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$result[] = $this->resolveId($id); |
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} |
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} |
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} |
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return $result; |
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} |
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private function resolveParameterBag(array &$args, ContainerInterface $parameterBag, \ReflectionParameter $parameter): bool |
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{ |
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if ($parameter->getType() && $parameter->getType()->isBuiltin()) { |
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if ($parameterBag->has($parameter->getName())) { |
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$args[] = $parameterBag->get($parameter->getName()); |
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return true; |
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} |
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} |
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return false; |
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} |
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private function resolveVariadic(array &$args, \ReflectionParameter $parameter): void |
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{ |
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if ($parameter->getClass()) { |
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foreach ($this->findAllImplementors($parameter->getClass()->getName()) as $implementor) { |
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$args[] = $implementor; |
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} |
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} else { |
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$args[] = null; |
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} |
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} |
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3 |
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private function resolveClass(string $className): object |
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{ |
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if ($this->itemProvider->getContainer()->has($className)) { |
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return $this->itemProvider->getContainer()->get($className); |
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} else { |
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return $this->resolveId($className); |
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} |
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} |
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} |
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borodulin /
FastContainer
