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<?php declare(strict_types=1); |
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namespace Stratadox\Di; |
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use Closure; |
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use Throwable; |
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use Psr\Container\NotFoundExceptionInterface as NotFound; |
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final class DependencyContainer implements Container |
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{ |
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private $remember = []; |
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private $factoryFor = []; |
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private $mustReload = []; |
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private $isCurrentlyResolving = []; |
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public function get($theService) |
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{ |
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$this->mustKnowAbout($theService); |
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if ($this->mustReload[$theService] || $this->hasNotYetLoaded($theService)) { |
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$this->remember[$theService] = $this->load($theService); |
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} |
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return $this->remember[$theService]; |
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} |
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public function has($theService): bool |
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{ |
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return isset($this->factoryFor[$theService]); |
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} |
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public function set( |
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string $theService, |
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Closure $producingTheService, |
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bool $cache = true |
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): void { |
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$this->remember[$theService] = null; |
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$this->factoryFor[$theService] = $producingTheService; |
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$this->mustReload[$theService] = !$cache; |
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} |
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public function forget(string $theService): void |
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{ |
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unset( |
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$this->remember[$theService], |
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$this->factoryFor[$theService], |
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$this->mustReload[$theService] |
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); |
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} |
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/** @throws InvalidServiceDefinition */ |
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private function load(string $theService) |
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{ |
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if (isset($this->isCurrentlyResolving[$theService])) { |
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throw DependenciesCannotBeCircular::loopDetectedIn($theService); |
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} |
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$this->isCurrentlyResolving[$theService] = true; |
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$makeTheService = $this->factoryFor[$theService]; |
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try { |
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return $makeTheService(); |
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} catch (Throwable $encounteredException) { |
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throw InvalidFactory::threwException($theService, $encounteredException); |
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} finally { |
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unset($this->isCurrentlyResolving[$theService]); |
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} |
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} |
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private function hasNotYetLoaded(string $theService): bool |
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{ |
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return !isset($this->remember[$theService]); |
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} |
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/** @throws NotFound */ |
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private function mustKnowAbout(string $theService): void |
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{ |
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if ($this->has($theService)) { |
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return; |
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} |
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throw ServiceNotFound::noServiceNamed($theService); |
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} |
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} |
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Stratadox /
Di
