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1 <?php 2 3 /* 4 * This file is part of the Symfony package. 5 * 6 * (c) Fabien Potencier <[email protected]> 7 * 8 * For the full copyright and license information, please view the LICENSE 9 * file that was distributed with this source code. 10 */ 11 12 namespace Symfony\Component\Console\CommandLoader; 13 14 use Symfony\Component\Console\Exception\CommandNotFoundException; 15 16 /** 17 * A simple command loader using factories to instantiate commands lazily. 18 * 19 * @author Maxime Steinhausser <[email protected]> 20 */ 21 class FactoryCommandLoader implements CommandLoaderInterface 22 { 23 private $factories; 24 25 /** 26 * @param callable[] $factories Indexed by command names 27 */ 28 public function __construct(array $factories) 29 { 30 $this->factories = $factories; 31 } 32 33 /** 34 * {@inheritdoc} 35 */ 36 public function has(string $name) 37 { 38 return isset($this->factories[$name]); 39 } 40 41 /** 42 * {@inheritdoc} 43 */ 44 public function get(string $name) 45 { 46 if (!isset($this->factories[$name])) { 47 throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name)); 48 } 49 50 $factory = $this->factories[$name]; 51 52 return $factory(); 53 } 54 55 /** 56 * {@inheritdoc} 57 */ 58 public function getNames() 59 { 60 return array_keys($this->factories); 61 } 62 }
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