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<?php |
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namespace Laganica\Di; |
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use ArrayObject; |
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use InvalidArgumentException; |
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use Laganica\Di\Definition\ClassDefinition; |
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use Laganica\Di\Definition\DefinitionFactoryInterface; |
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use Laganica\Di\Definition\DefinitionInterface; |
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use Laganica\Di\Exception\CircularDependencyFoundException; |
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use Laganica\Di\Exception\ContainerException; |
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use Laganica\Di\Exception\DefinitionNotFoundException; |
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use Laganica\Di\Exception\InvalidDefinitionException; |
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use Laganica\Di\Exception\NotFoundException; |
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use Laganica\Di\Resolver\ResolverFactoryInterface; |
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use Psr\Container\ContainerExceptionInterface; |
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use Psr\Container\ContainerInterface; |
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use Psr\Container\NotFoundExceptionInterface; |
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/** |
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* Class Container |
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* |
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* @package Laganica\Di |
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*/ |
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class Container implements ContainerInterface |
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{ |
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/** |
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* @var ArrayObject |
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*/ |
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private $definitions; |
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/** |
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* @var ArrayObject |
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*/ |
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private $entries; |
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/** |
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* @var ArrayObject |
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*/ |
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private $resolving; |
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/** |
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* @var bool |
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*/ |
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private $autowire = true; |
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/** |
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* @var ResolverFactoryInterface |
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*/ |
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private $resolverFactory; |
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/** |
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* @var DefinitionFactoryInterface |
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*/ |
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private $definitionFactory; |
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/** |
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* @param DefinitionFactoryInterface $definitionFactory |
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* @param ResolverFactoryInterface $resolverFactory |
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*/ |
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public function __construct(DefinitionFactoryInterface $definitionFactory, ResolverFactoryInterface $resolverFactory) |
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{ |
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$this->definitions = new ArrayObject(); |
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$this->entries = new ArrayObject(); |
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$this->resolving = new ArrayObject(); |
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$this->definitionFactory = $definitionFactory; |
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$this->resolverFactory = $resolverFactory; |
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$this->resolverFactory->setContainer($this); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function get($id) |
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{ |
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if (!is_string($id)) { |
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$type = is_object($id) ? get_class($id) : gettype($id); |
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throw new InvalidArgumentException("Argument \$id must be string, $type given"); |
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} |
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if ($this->entries->offsetExists($id)) { |
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return $this->entries->offsetGet($id); |
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} |
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$entry = $this->resolveEntry($id); |
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$this->entries->offsetSet($id, $entry); |
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return $entry; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function has($id): bool |
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{ |
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try { |
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$this->get($id); |
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return true; |
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} catch (NotFoundExceptionInterface $ex) { |
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return false; |
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} catch (ContainerExceptionInterface $ex) { |
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return true; |
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} |
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} |
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/** |
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* @param string $id |
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* |
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* @throws ContainerException |
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* @throws DefinitionNotFoundException |
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* @throws InvalidDefinitionException |
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* @throws NotFoundException |
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* |
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* @return mixed |
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*/ |
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private function resolveEntry(string $id) |
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{ |
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$definition = $this->getDefinition($id); |
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$this->startResolving($id); |
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$entry = $this->resolverFactory->create($definition)->resolve($definition); |
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$this->endResolving($id); |
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return $entry; |
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} |
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/** |
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* @param bool $autowire |
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*/ |
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public function setAutowire(bool $autowire): void |
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{ |
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$this->autowire = $autowire; |
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} |
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private function isAutowire(): bool |
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{ |
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return $this->autowire; |
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} |
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/** |
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* @param array $definitions |
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* |
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* @throws ContainerException |
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*/ |
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public function addDefinitions(array $definitions): void |
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{ |
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foreach ($definitions as $id => $definition) { |
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$this->addDefinition($id, $definition); |
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} |
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} |
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/** |
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* @param string $id |
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* @param $definition |
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* |
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* @throws ContainerException |
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*/ |
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public function addDefinition(string $id, $definition): void |
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{ |
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if ($this->definitions->offsetExists($id)) { |
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throw new ContainerException("More than one definition is found for entry or class $id"); |
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} |
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$this->definitions->offsetSet($id, $definition); |
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} |
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/** |
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* @param string $id |
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* |
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* @throws DefinitionNotFoundException |
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* @throws InvalidDefinitionException |
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* |
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* @return DefinitionInterface |
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*/ |
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private function getDefinition(string $id): DefinitionInterface |
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{ |
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$definition = $this->definitions->offsetExists($id) |
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? $this->definitions->offsetGet($id) |
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: null; |
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if ($definition === null && $this->isAutowire()) { |
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$definition = new ClassDefinition($id); |
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} |
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if ($definition === null) { |
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throw DefinitionNotFoundException::create($id); |
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} |
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return $this->definitionFactory->create($definition); |
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} |
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/** |
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* @param string $id |
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* |
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* @throws CircularDependencyFoundException |
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* |
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* @return void |
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*/ |
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private function startResolving(string $id): void |
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{ |
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if ($this->resolving->offsetExists($id)) { |
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throw CircularDependencyFoundException::create($id); |
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} |
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$this->resolving->offsetSet($id, true); |
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} |
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/** |
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* @param string $id |
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* |
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* @return void |
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*/ |
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private function endResolving(string $id): void |
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{ |
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if ($this->resolving->offsetExists($id)) { |
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$this->resolving->offsetUnset($id); |
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} |
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} |
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} |
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