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<?php |
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/* |
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* @copyright (c) 2019 Mendel <[email protected]> |
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* @license see license.txt |
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*/ |
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namespace drycart\di; |
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/** |
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* Main code for instantiate our object, magic call etc |
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* Abstract, need configuration logic |
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* @author Mendel <[email protected]> |
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*/ |
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abstract class AbstractContainer extends AbstractParametersContainer implements DiInterface |
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{ |
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/** |
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* Contain our configuration data |
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* @var array |
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*/ |
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protected $config = []; |
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/** |
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* Contain stored object (for services) |
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* @var array |
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*/ |
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private $storage = []; |
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private $cachedConfig = []; |
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/** |
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* Get prepared config for selected class |
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* Add default value for system fields if empty |
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* @param string $id |
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* @param bool $required need check if exist, and throw if not |
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* @return array |
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*/ |
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protected function classConfig(string $id, bool $required = false) : ?array |
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{ |
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if (!isset($this->cachedConfig[$id])) { |
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$config = $this->internalConfig($id); |
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$this->initRequired($config['#required'] ?? []); |
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unset($config['#required']); |
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$this->cachedConfig[$id] = $config; |
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} |
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if($required and is_null($this->cachedConfig[$id])) { |
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throw new NotFoundException('Not exist class: '.$id); |
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} |
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return $this->cachedConfig[$id]; |
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} |
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protected function internalConfig(string $id) : ?array |
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{ |
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if (!isset($this->config[$id]) and !class_exists($id)) { |
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return null; |
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} |
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$config = []; |
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if (!$this->isAlias($id)) { |
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$config = $this->tryAddParentConfig($id, $config); |
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} elseif (isset($this->config[$id]['#class'])) { |
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$config = $this->tryAddParentConfig($this->config[$id]['#class'], $config); |
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} |
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$config = array_merge($config, $this->config[$id] ?? []); |
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// |
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if (empty($config['#class'])) { |
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$config['#class'] = $id; |
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} |
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// |
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if (!isset($config['#singleton'])) { |
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$config['#singleton'] = false; |
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} |
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return $config; |
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} |
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protected function tryAddParentConfig(string $id, array $config) : array |
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{ |
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foreach (array_reverse(class_parents($id)) as $parent) { |
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$config = array_merge($config, $this->config[$parent] ?? []); |
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} |
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return $config; |
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} |
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/** |
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* Singleton wrapper for internal use |
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* @param string $id |
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* @param array $config |
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* @return mixed |
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*/ |
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protected function internalSingleton($id, array $config) |
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{ |
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if (!isset($this->storage[$id])) { |
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$this->storage[$id] = $this->internalMake($id, $config); |
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} |
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return $this->storage[$id]; |
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} |
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/** |
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* Create new object using our core |
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* @param string $id class name |
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* @param array $config |
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* @param array $parameters parameters from request |
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* @return mixed |
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* @throws ContainerException |
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*/ |
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protected function internalMake($id, array $config, array $parameters = []) |
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{ |
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$fullParameters = array_merge($parameters, $config); |
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$obj = $this->getObject($fullParameters); |
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// |
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if (!$this->isAlias($id) and !is_a($obj, $id)) { |
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throw new ContainerException('Wrong class, will be '.$id); |
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} |
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return $obj; |
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} |
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protected function isAlias(string $id) : bool |
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{ |
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return (substr($id, 0, 1) == '#'); |
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} |
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protected function initRequired(array $requirement) : void |
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{ |
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foreach ($requirement as $className) { |
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if (!isset($this->storage[$className])) { |
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$this->singleton($className); |
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} |
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} |
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} |
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/** |
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* Get reflector for method/function... i.e. callable |
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* @2do: check if it need, maybe it can be done whithout this? |
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* @param callable $callable |
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* @return array |
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*/ |
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protected function getCallableDependency(callable $callable) : array |
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{ |
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if (is_array($callable)) { |
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$className = get_class($callable[0]); |
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$classReflector = new \ReflectionClass($className); |
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return $classReflector->getMethod($callable[1])->getParameters(); |
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} else { |
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return (new \ReflectionFunction($callable))->getParameters(); |
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} |
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} |
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/** |
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* Prepare parameters for callable (add dependency) |
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* @param callable $callable |
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* @param array $parameters assoc array of parameters |
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* @return array prepared parameters |
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*/ |
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protected function callableParameters(callable $callable, array $parameters) : array |
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{ |
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$dependency = $this->getCallableDependency($callable); |
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return $this->prepareParameters($dependency, $parameters); |
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} |
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private $reflectionCache = []; |
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private function getClassDependency(string $className) : array |
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{ |
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if (!class_exists($className)) { |
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// Not NotFoundException => it is missconfiguration, i.e. wrong class at config |
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throw new ContainerException('Class need to instantiate not exist '.$className); |
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} |
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if (!isset($this->reflectionCache[$className])) { |
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$reflector = new \ReflectionClass($className); |
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$constructor = $reflector->getConstructor(); |
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if (!is_null($constructor)) { |
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$this->reflectionCache[$className] = $constructor->getParameters(); |
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} else { |
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$this->reflectionCache[$className] = []; |
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} |
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} |
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return $this->reflectionCache[$className]; |
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} |
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/** |
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* Instantiate object using parameters array |
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* @param array $parameters |
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* @return mixed |
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*/ |
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private function getObject(array $parameters = []) |
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{ |
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if (isset($parameters['#factory'])) { |
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return call_user_func_array($parameters['#factory'], [$parameters, $this]); |
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} |
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$className = $parameters['#class']; |
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// |
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$dependency = $this->getClassDependency($className); |
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if (!empty($dependency)) { |
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$preparedParameters = $this->prepareParameters($dependency, $parameters); |
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} else { |
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$preparedParameters = []; |
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} |
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return new $className(...$preparedParameters); |
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} |
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} |
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drycart /
di
