70 lines
1.7 KiB
PHP
70 lines
1.7 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection;
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use Psr\Container\ContainerInterface as PsrContainerInterface;
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use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
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use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
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/**
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* @author Robin Chalas <robin.chalas@gmail.com>
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class ServiceLocator implements PsrContainerInterface
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{
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private $factories;
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private $values = array();
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/**
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* @param callable[] $factories
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*/
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public function __construct(array $factories)
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{
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$this->factories = $factories;
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}
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/**
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* {@inheritdoc}
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*/
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public function has($id)
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{
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return isset($this->factories[$id]);
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}
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/**
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* {@inheritdoc}
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*/
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public function get($id)
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{
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if (!isset($this->factories[$id])) {
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throw new ServiceNotFoundException($id, null, null, array_keys($this->factories));
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}
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if (true === $factory = $this->factories[$id]) {
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throw new ServiceCircularReferenceException($id, array($id, $id));
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}
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if (false !== $factory) {
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$this->factories[$id] = true;
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$this->values[$id] = $factory();
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$this->factories[$id] = false;
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}
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return $this->values[$id];
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}
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public function __invoke($id)
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{
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return isset($this->factories[$id]) ? $this->get($id) : null;
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}
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}
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