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Filename :
HelperSet.php
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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace PerformanceBooster\Symfony\Component\Console\Helper; use PerformanceBooster\Symfony\Component\Console\Exception\InvalidArgumentException; /** * HelperSet represents a set of helpers to be used with a command. * * @author Fabien Potencier <fabien@symfony.com> * * @implements \IteratorAggregate<string, HelperInterface> */ class HelperSet implements \IteratorAggregate { /** @var array<string, HelperInterface> */ private array $helpers = []; /** * @param HelperInterface[] $helpers */ public function __construct(array $helpers = []) { foreach ($helpers as $alias => $helper) { $this->set($helper, \is_int($alias) ? null : $alias); } } /** * @return void */ public function set(HelperInterface $helper, ?string $alias = null) { $this->helpers[$helper->getName()] = $helper; if (null !== $alias) { $this->helpers[$alias] = $helper; } $helper->setHelperSet($this); } /** * Returns true if the helper if defined. */ public function has(string $name) : bool { return isset($this->helpers[$name]); } /** * Gets a helper value. * * @throws InvalidArgumentException if the helper is not defined */ public function get(string $name) : HelperInterface { if (!$this->has($name)) { throw new InvalidArgumentException(\sprintf('The helper "%s" is not defined.', $name)); } return $this->helpers[$name]; } public function getIterator() : \Traversable { return new \ArrayIterator($this->helpers); } }