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<?php |
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declare(strict_types=1); |
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namespace Gacela\Framework\Container; |
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use Closure; |
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use Gacela\Framework\Container\Exception\ContainerException; |
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use Gacela\Framework\Container\Exception\ContainerKeyNotFoundException; |
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use SplObjectStorage; |
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use function count; |
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use function is_callable; |
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use function is_object; |
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final class Container implements ContainerInterface |
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{ |
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/** @var array<string,mixed> */ |
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private array $raw = []; |
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/** @var array<string,mixed> */ |
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private array $services = []; |
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private SplObjectStorage $factoryServices; |
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/** @var array<string,list<Closure>> */ |
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private array $servicesToExtend; |
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/** @var array<string,bool> */ |
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private array $frozenServices = []; |
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private ?string $currentlyExtending = null; |
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/** |
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* @param array<string,list<Closure>> $servicesToExtend |
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*/ |
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public function __construct(array $servicesToExtend = []) |
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{ |
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$this->servicesToExtend = $servicesToExtend; |
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$this->factoryServices = new SplObjectStorage(); |
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} |
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public function getLocator(): Locator |
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{ |
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return Locator::getInstance(); |
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} |
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public function set(string $id, $service): void |
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{ |
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if (isset($this->frozenServices[$id])) { |
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throw ContainerException::serviceFrozen($id); |
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} |
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$this->services[$id] = $service; |
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if ($this->currentlyExtending === $id) { |
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return; |
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} |
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$this->extendService($id); |
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} |
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public function has(string $id): bool |
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{ |
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return isset($this->services[$id]); |
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} |
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/** |
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* @throws ContainerKeyNotFoundException |
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* |
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* @return mixed |
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*/ |
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public function get(string $id) |
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{ |
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if (!$this->has($id)) { |
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throw new ContainerKeyNotFoundException($this, $id); |
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} |
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$this->frozenServices[$id] = true; |
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if ( |
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isset($this->raw[$id]) |
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|| !is_object($this->services[$id]) |
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|| !method_exists($this->services[$id], '__invoke') |
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) { |
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return $this->services[$id]; |
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} |
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if (isset($this->factoryServices[$this->services[$id]])) { |
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return $this->services[$id]($this); |
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} |
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$rawService = $this->services[$id]; |
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/** @psalm-suppress InvalidFunctionCall */ |
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$this->services[$id] = $rawService($this); |
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/** @var mixed $resolvedService */ |
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$resolvedService = $this->services[$id]; |
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$this->raw[$id] = $rawService; |
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return $resolvedService; |
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} |
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public function factory(object $service): object |
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{ |
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if (!method_exists($service, '__invoke')) { |
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throw ContainerException::serviceNotInvokable(); |
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} |
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$this->factoryServices->attach($service); |
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return $service; |
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} |
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public function remove(string $id): void |
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{ |
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unset( |
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$this->raw[$id], |
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$this->services[$id], |
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$this->frozenServices[$id], |
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); |
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} |
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/** |
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* @psalm-suppress MixedAssignment |
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*/ |
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public function extend(string $id, Closure $service): Closure |
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{ |
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if (!$this->has($id)) { |
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$this->extendLater($id, $service); |
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return $service; |
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} |
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if (isset($this->frozenServices[$id])) { |
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throw ContainerException::serviceFrozen($id); |
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} |
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$factory = $this->services[$id]; |
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$extended = $this->generateExtendedService($service, $factory); |
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$this->set($id, $extended); |
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return $extended; |
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} |
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private function extendLater(string $id, Closure $service): void |
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{ |
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if (!isset($this->servicesToExtend[$id])) { |
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$this->servicesToExtend[$id] = []; |
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} |
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$this->servicesToExtend[$id][] = $service; |
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} |
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/** |
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* @psalm-suppress MissingClosureReturnType,MixedAssignment |
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* |
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* @param mixed $factory |
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*/ |
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private function generateExtendedService(Closure $service, $factory): Closure |
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{ |
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if (is_callable($factory)) { |
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return static function (self $container) use ($service, $factory) { |
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$r1 = $factory($container); |
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$r2 = $service($r1, $container); |
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return $r2 ?? $r1; |
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}; |
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} |
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if (is_object($factory)) { |
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return static function (self $container) use ($service, $factory) { |
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$r = $service($factory, $container); |
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return $r ?? $factory; |
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}; |
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} |
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throw ContainerException::serviceNotExtendable(); |
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} |
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private function extendService(string $id): void |
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{ |
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if (!isset($this->servicesToExtend[$id]) || count($this->servicesToExtend[$id]) === 0) { |
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return; |
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} |
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$this->currentlyExtending = $id; |
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foreach ($this->servicesToExtend[$id] as $service) { |
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$extended = $this->extend($id, $service); |
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} |
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unset($this->servicesToExtend[$id]); |
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$this->currentlyExtending = null; |
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$this->set($id, $extended); |
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} |
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} |
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