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<?php |
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declare(strict_types=1); |
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namespace Stratadox\Di; |
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use Closure; |
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use Psr\Container\ContainerInterface as PsrContainerInterface; |
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use ReflectionClass as Reflected; |
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use ReflectionException; |
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use ReflectionType; |
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final class AutoWiring implements ContainerInterface, PsrContainerInterface |
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{ |
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private $container; |
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private $links; |
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private function __construct(ContainerInterface $container, array $links) |
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{ |
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$this->container = $container; |
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$this->links = $links; |
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} |
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public static function the(ContainerInterface $container) : self |
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{ |
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return new self($container, []); |
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} |
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public function link(string $interface, string $class) : self |
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{ |
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if (!is_a($class, $interface, true)) { |
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throw InvalidServiceType::serviceIsNotOfType($class, $interface); |
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} |
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return new self($this->container, [$interface => $class] + $this->links); |
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} |
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public function get($theService, string $type = '') |
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{ |
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if (!$this->container->has($theService)) { |
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$this->resolve($theService); |
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} |
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return $this->container->get($theService); |
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} |
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public function has($theService) : bool |
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{ |
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return class_exists($theService) |
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|| isset($this->links[$theService]) |
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|| $this->container->has($theService); |
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} |
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public function set(string $service, Closure $factory, bool $cache = true) |
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{ |
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$this->container->set($service, $factory, $cache); |
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} |
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public function forget(string $service) |
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{ |
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$this->container->forget($service); |
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} |
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private function resolve(string $service) |
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{ |
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try { |
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$this->resolveThe(new Reflected($service)); |
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} catch (ReflectionException $exception) { |
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throw ServiceNotFound::noServiceNamed($service); |
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} |
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} |
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private function resolveThe(Reflected $service) |
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{ |
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if ($service->isAbstract() || $service->isInterface()) { |
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$this->resolveAbstract($service); |
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} else { |
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$this->resolveClass($service); |
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} |
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} |
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private function resolveAbstract(Reflected $service) : void |
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{ |
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$name = $service->getName(); |
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if (!isset($this->links[$name])) { |
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throw CannotResolveAbstractType::noLinkDefinedFor($service); |
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} |
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$class = $this->links[$name]; |
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$this->resolveClass(new Reflected($class)); |
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$this->container->set($name, function () use ($class) { |
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return $this->container->get($class); |
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}); |
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} |
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private function resolveClass(Reflected $service) : void |
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{ |
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$name = $service->getName(); |
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$constructor = $service->getConstructor(); |
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$dependencies = []; |
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if (isset($constructor)) { |
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foreach ($constructor->getParameters() as $parameter) { |
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$dependencies[] = $this->handleDependency($parameter->getType()); |
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} |
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} |
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$container = $this->container; |
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$container->set($name, function () use ($name, $dependencies, $container) { |
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$parameters = []; |
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foreach ($dependencies as $dependency) { |
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$parameters[] = $container->get($dependency); |
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} |
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return new $name(...$parameters); |
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}); |
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} |
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private function handleDependency(ReflectionType $theType) : string |
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{ |
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if ($theType->isBuiltin()) { |
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throw CannotAutoWireBuiltInTypes::cannotResolve($theType); |
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} |
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$theDependency = (string) $theType; |
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if (!$this->container->has($theDependency)) { |
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$this->resolve($theDependency); |
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} |
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return $theDependency; |
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} |
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} |
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Stratadox /
Di
