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<?php |
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|
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declare(strict_types=1); |
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|
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namespace WPMU_DEV\Defender\Vendor\DI\Definition\Resolver; |
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|
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use WPMU_DEV\Defender\Vendor\DI\Definition\Definition; |
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use WPMU_DEV\Defender\Vendor\DI\Definition\Exception\InvalidDefinition; |
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use WPMU_DEV\Defender\Vendor\DI\Definition\ObjectDefinition; |
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use WPMU_DEV\Defender\Vendor\DI\Definition\ObjectDefinition\PropertyInjection; |
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use WPMU_DEV\Defender\Vendor\DI\DependencyException; |
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use WPMU_DEV\Defender\Vendor\DI\Proxy\ProxyFactory; |
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use Exception; |
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use ProxyManager\Proxy\LazyLoadingInterface; |
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use WPMU_DEV\Defender\Vendor\Psr\Container\NotFoundExceptionInterface; |
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use ReflectionClass; |
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use ReflectionProperty; |
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|
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/** |
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* Create objects based on an object definition. |
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* |
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* @since 4.0 |
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* @author Matthieu Napoli <[email protected]> |
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*/ |
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class ObjectCreator implements DefinitionResolver |
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{ |
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/** |
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* @var ProxyFactory |
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*/ |
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private $proxyFactory; |
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|
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/** |
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* @var ParameterResolver |
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*/ |
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private $parameterResolver; |
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|
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/** |
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* @var DefinitionResolver |
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*/ |
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private $definitionResolver; |
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|
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/** |
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* @param DefinitionResolver $definitionResolver Used to resolve nested definitions. |
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* @param ProxyFactory $proxyFactory Used to create proxies for lazy injections. |
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*/ |
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public function __construct( |
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DefinitionResolver $definitionResolver, |
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ProxyFactory $proxyFactory |
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) { |
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$this->definitionResolver = $definitionResolver; |
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$this->proxyFactory = $proxyFactory; |
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$this->parameterResolver = new ParameterResolver($definitionResolver); |
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} |
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|
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/** |
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* Resolve a class definition to a value. |
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* |
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* This will create a new instance of the class using the injections points defined. |
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* |
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* @param ObjectDefinition $definition |
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* |
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* @return object|null |
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*/ |
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public function resolve(Definition $definition, array $parameters = []) |
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{ |
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// Lazy? |
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if ($definition->isLazy()) { |
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return $this->createProxy($definition, $parameters); |
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} |
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|
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return $this->createInstance($definition, $parameters); |
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} |
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|
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/** |
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* The definition is not resolvable if the class is not instantiable (interface or abstract) |
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* or if the class doesn't exist. |
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* |
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* @param ObjectDefinition $definition |
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*/ |
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public function isResolvable(Definition $definition, array $parameters = []) : bool |
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{ |
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return $definition->isInstantiable(); |
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} |
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|
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/** |
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* Returns a proxy instance. |
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*/ |
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private function createProxy(ObjectDefinition $definition, array $parameters) : LazyLoadingInterface |
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{ |
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/** @noinspection PhpUnusedParameterInspection */ |
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$proxy = $this->proxyFactory->createProxy( |
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$definition->getClassName(), |
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function (& $wrappedObject, $proxy, $method, $params, & $initializer) use ($definition, $parameters) { |
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$wrappedObject = $this->createInstance($definition, $parameters); |
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$initializer = null; // turning off further lazy initialization |
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|
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return true; |
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} |
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); |
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|
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return $proxy; |
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} |
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|
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/** |
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* Creates an instance of the class and injects dependencies.. |
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* |
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* @param array $parameters Optional parameters to use to create the instance. |
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* |
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* @throws InvalidDefinition |
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* @throws DependencyException |
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* @return object |
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*/ |
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private function createInstance(ObjectDefinition $definition, array $parameters) |
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{ |
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// Check that the class is instantiable |
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if (! $definition->isInstantiable()) { |
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// Check that the class exists |
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if (! $definition->classExists()) { |
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throw InvalidDefinition::create($definition, sprintf( |
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'Entry "%s" cannot be resolved: the class doesn\'t exist', |
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$definition->getName() |
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)); |
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} |
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|
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throw InvalidDefinition::create($definition, sprintf( |
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'Entry "%s" cannot be resolved: the class is not instantiable', |
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$definition->getName() |
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)); |
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} |
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|
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$classname = $definition->getClassName(); |
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$classReflection = new ReflectionClass($classname); |
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|
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$constructorInjection = $definition->getConstructorInjection(); |
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|
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try { |
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$args = $this->parameterResolver->resolveParameters( |
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$constructorInjection, |
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$classReflection->getConstructor(), |
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$parameters |
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); |
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|
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$object = new $classname(...$args); |
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|
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$this->injectMethodsAndProperties($object, $definition); |
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} catch (NotFoundExceptionInterface $e) { |
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throw new DependencyException(sprintf( |
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'Error while injecting dependencies into %s: %s', |
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$classReflection->getName(), |
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$e->getMessage() |
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), 0, $e); |
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} catch (InvalidDefinition $e) { |
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throw InvalidDefinition::create($definition, sprintf( |
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'Entry "%s" cannot be resolved: %s', |
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$definition->getName(), |
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$e->getMessage() |
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)); |
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} |
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|
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return $object; |
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} |
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|
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protected function injectMethodsAndProperties($object, ObjectDefinition $objectDefinition) |
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{ |
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// Property injections |
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foreach ($objectDefinition->getPropertyInjections() as $propertyInjection) { |
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$this->injectProperty($object, $propertyInjection); |
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} |
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|
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// Method injections |
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foreach ($objectDefinition->getMethodInjections() as $methodInjection) { |
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$methodReflection = new \ReflectionMethod($object, $methodInjection->getMethodName()); |
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$args = $this->parameterResolver->resolveParameters($methodInjection, $methodReflection); |
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|
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$methodReflection->invokeArgs($object, $args); |
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} |
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} |
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|
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/** |
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* Inject dependencies into properties. |
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* |
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* @param object $object Object to inject dependencies into |
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* @param PropertyInjection $propertyInjection Property injection definition |
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* |
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* @throws DependencyException |
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* @throws InvalidDefinition |
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*/ |
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private function injectProperty($object, PropertyInjection $propertyInjection) |
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{ |
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$propertyName = $propertyInjection->getPropertyName(); |
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|
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$value = $propertyInjection->getValue(); |
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|
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if ($value instanceof Definition) { |
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try { |
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$value = $this->definitionResolver->resolve($value); |
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} catch (DependencyException $e) { |
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throw $e; |
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} catch (Exception $e) { |
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throw new DependencyException(sprintf( |
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'Error while injecting in %s::%s. %s', |
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get_class($object), |
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$propertyName, |
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$e->getMessage() |
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), 0, $e); |
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} |
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} |
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|
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self::setPrivatePropertyValue($propertyInjection->getClassName(), $object, $propertyName, $value); |
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} |
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|
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public static function setPrivatePropertyValue(string $className = null, $object, string $propertyName, $propertyValue) |
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{ |
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$className = $className ?: get_class($object); |
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|
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$property = new ReflectionProperty($className, $propertyName); |
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if (! $property->isPublic()) { |
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$property->setAccessible(true); |
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} |
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$property->setValue($object, $propertyValue); |
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} |
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} |
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|
