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<?php |
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declare(strict_types=1); |
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namespace VPA\DI; |
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use Psr\Container\ContainerInterface; |
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use ReflectionClass; |
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use ReflectionNamedType; |
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class Container implements ContainerInterface |
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{ |
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private static array $classes = []; |
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private static bool $bubblePropagation = true; |
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private static array $manualConfig; |
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function __construct() |
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{ |
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} |
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public function setBubblePropagation(bool $bubblePropagation): void |
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{ |
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self::$bubblePropagation = $bubblePropagation; |
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$this->reloadContainers(); |
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} |
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/** |
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* @param array $manualConfig |
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* @throws NotFoundException |
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*/ |
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public function registerContainers(array $manualConfig = []): void |
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{ |
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self::$manualConfig = $manualConfig; |
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$injectedClasses = []; |
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$classes = get_declared_classes(); |
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$loadedClasses = array_combine($classes, $classes); |
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$classesNeedCheck = array_merge($loadedClasses, $manualConfig); |
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foreach ($classesNeedCheck as $alias => $class) { |
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assert(is_string($class)); |
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if (class_exists($class)) { |
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if ($this->isInjectable($class)) { |
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$injectedClasses[$alias] = $class; |
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} |
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} else { |
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throw new NotFoundException("VPA\DI\Container::registerClasses: Class $class not found"); |
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} |
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} |
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self::$classes = $injectedClasses; |
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} |
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private function reloadContainers(): void |
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{ |
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$this->registerContainers(self::$manualConfig); |
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} |
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private function entityIsInjectable(string $entity): bool |
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{ |
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assert(class_exists($entity) || interface_exists($entity)); |
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$reflectionClass = new ReflectionClass($entity); |
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return !empty($reflectionClass->getAttributes(Injectable::class)); |
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} |
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private function parentClassIsInjectable(string $class): bool |
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{ |
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$parents = class_parents($class); |
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return $this->checkInjectableTree($parents); |
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} |
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private function interfaceIsInjectable(string $class): bool |
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{ |
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$interfaces = class_implements($class); |
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return $this->checkInjectableTree($interfaces); |
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} |
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private function checkInjectableTree(array $tree): bool |
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{ |
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foreach ($tree as $branch) { |
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if ($this->entityIsInjectable($branch)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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private function isInjectable(string $class): bool |
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{ |
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if ($this->entityIsInjectable($class)) { |
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return true; |
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} |
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if (self::$bubblePropagation) { |
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if ($this->parentClassIsInjectable($class)) { |
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return true; |
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} |
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if ($this->interfaceIsInjectable($class)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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private function prepareObject(string $aliasName, string $className, array $params = []): object |
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{ |
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if ($this->has($className) || $this->isInjectable($className)) { |
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return $this->getObject($className, $params); |
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} |
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throw new NotFoundException("VPA\DI\Container::get('$aliasName->$className'): Class with attribute Injectable not found. Check what class exists and attribute Injectable is set"); |
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} |
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private function getObject(string $className, array $params): object |
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{ |
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assert(class_exists($className)); |
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$reflectionClass = new ReflectionClass($className); |
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$constructReflector = $reflectionClass->getConstructor(); |
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if (empty($constructReflector)) { |
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return new $className; |
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} |
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$constructArguments = $constructReflector->getParameters(); |
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if (empty($constructArguments)) { |
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return new $className; |
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} |
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$args = []; |
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foreach ($constructArguments as $argument) { |
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$argumentType = $argument->getType(); |
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$argumentName = $argument->getName(); |
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assert($argumentType instanceof ReflectionNamedType); |
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$argumentTypeName = $argumentType->getName(); |
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if (class_exists($argumentTypeName) || interface_exists($argumentTypeName)) { |
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$args[$argumentName] = $this->get($argumentTypeName); |
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} else { |
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$args[$argumentName] = $params[$argumentName] ?? null; |
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} |
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} |
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return new $className(...$args); |
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} |
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public function get(string $id, array $params = []): object |
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{ |
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$class = self::$classes[$id] ?? $id; |
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assert(is_string($class)); |
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return $this->prepareObject($id, $class, $params); |
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} |
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public function has(string $id): bool |
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{ |
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$class = self::$classes[$id] ?? $id; |
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return (isset(self::$classes[$id]) || $this->isInjectable($class)); |
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} |
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} |
zolll23 /
DI
