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