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<?php |
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namespace PhpUnitGen\Container; |
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use PhpUnitGen\Exception\ContainerException; |
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use PhpUnitGen\Exception\NotFoundException; |
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use Respect\Validation\Validator; |
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/** |
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* Class Container. |
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* |
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* @author Paul Thébaud <[email protected]>. |
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* @copyright 2017-2018 Paul Thébaud <[email protected]>. |
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* @license https://opensource.org/licenses/MIT The MIT license. |
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* @link https://github.com/paul-thebaud/phpunit-generator |
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* @since Class available since Release 2.0.0. |
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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 callable[] $customResolvable All objects resolvable from a callable. |
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*/ |
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private $customResolvable = []; |
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/** |
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* @var string[] $autoResolvable All objects resolvable automatically. |
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*/ |
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private $autoResolvable = []; |
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/** |
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* @var object[] $instances All objects instances. |
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*/ |
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private $instances = []; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setResolver(string $id, callable $resolver): void |
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{ |
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$this->customResolvable[$id] = $resolver; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setInstance(string $id, object $instance): void |
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{ |
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$this->instances[$id] = $instance; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function set(string $id, string $class = null): void |
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{ |
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$this->autoResolvable[$id] = $class ?? $id; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function get($id): object |
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{ |
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return $this->resolve($id); |
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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->resolve($id); |
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} catch (NotFoundException $exception) { |
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return false; |
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} catch (ContainerException $exception) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Try to retrieve a service instance. |
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* |
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* @param string $id The service identifier. |
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* |
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* @return object The service. |
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* |
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* @throws ContainerException If the service identifier is not a string. |
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* @throws NotFoundException If the service does not exists. |
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*/ |
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private function resolve($id): object |
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{ |
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if (! is_string($id)) { |
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throw new ContainerException("Identifier is not a string."); |
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} |
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if (Validator::key($id)->validate($this->instances)) { |
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return $this->instances[$id]; |
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} |
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if (Validator::key($id)->validate($this->customResolvable)) { |
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return $this->instances[$id] = $this->customResolvable[$id]($this); |
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} |
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if (Validator::key($id)->validate($this->autoResolvable)) { |
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return $this->instances[$id] = $this->autoResolve($this->autoResolvable[$id]); |
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} |
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throw new NotFoundException(sprintf('Service of identifier "%s" not found.', $id)); |
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} |
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/** |
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* Try to automatically create a service. |
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* |
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* @param string $class The service class. |
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* |
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* @return object |
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* |
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* @throws ContainerException If the service cannot be constructed. |
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*/ |
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private function autoResolve(string $class): object |
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{ |
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if (! class_exists($class)) { |
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throw new ContainerException(sprintf("Class %s does not exists.", $class)); |
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} |
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$reflection = new \ReflectionClass($class); |
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if (! $reflection->isInstantiable()) { |
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throw new ContainerException(sprintf("Class %s is not instantiable.", $class)); |
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} |
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if (($constructor = $reflection->getConstructor()) === null) { |
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return $reflection->newInstance(); |
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} |
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$constructorParameters = []; |
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foreach ($constructor->getParameters() as $parameter) { |
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$constructorParameters[] = $this->resolve($parameter->getClass()->getName()); |
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} |
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return $reflection->newInstanceArgs($constructorParameters); |
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} |
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} |
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paul-thebaud /
phpunit-generator
