Symfony/Translation keys extraction from Nette and Latte

LatteExtractor.php

<?php

declare(strict_types=1);

namespace App\Infrastructure\Localization\Extractor;

use Latte\Engine;
use Nette\Application\UI\ITemplateFactory;
use Nette\Bridges\ApplicationLatte\Template;
use Nette\Utils\Finder;
use Symfony\Component\Translation\Extractor\ExtractorInterface;
use Symfony\Component\Translation\Extractor\PhpExtractor;
use Symfony\Component\Translation\MessageCatalogue;

final class LatteExtractor implements ExtractorInterface
{
	private Engine $latte;

	private PhpExtractor $compiledLatteExtractor;

	private string $prefix;

	public function __construct(ITemplateFactory $templateFactory)
	{
		$template = $templateFactory->createTemplate();
		\assert($template instanceof Template);
		$this->latte = $template->getLatte();

		$this->compiledLatteExtractor = new class extends PhpExtractor {
			protected $sequences = [
				[
					'$this',
					'->',
					'filters',
					'->',
					'translate',
					')',
					'(',
					PhpExtractor::MESSAGE_TOKEN,
				],
				[
					'call_user_func',
					'(',
					'$this',
					'->',
					'filters',
					'->',
					'translate',
					',',
					PhpExtractor::MESSAGE_TOKEN,
				],
				[
					'$this',
					'->',
					'filters',
					'->',
					'filterContent',
					'(',
					'"translate"',
					',',
					'$_fi',
					',',
					PhpExtractor::MESSAGE_TOKEN,
				],
			];
		};
	}

	public function extract($resource, MessageCatalogue $catalogue)
	{
		foreach (Finder::findFiles('*.latte')->from($resource) as $file) {
			$this->extractFile($file, $catalogue);
		}
	}

	private function extractFile(\SplFileInfo $file, MessageCatalogue $catalogue): void
	{
		$filePath = $file->getPathname();
		$compiledTemplateFile = $this->latte->getCacheFile($filePath);
		$this->latte->warmupCache($filePath);

		$this->compiledLatteExtractor->extract($compiledTemplateFile, $catalogue);
	}

	public function setPrefix(string $prefix)
	{
		$this->prefix = $prefix;
	}
}

NetteTranslatorExtractor.php

<?php

declare(strict_types=1);

namespace App\Infrastructure\Localization\Extractor;

use Symfony\Component\Translation\Extractor\PhpExtractor;

final class NetteTranslatorExtractor extends PhpExtractor
{
	public function __construct()
	{
		$this->sequences[] = [
			'->',
			'translate',
			'(',
			PhpExtractor::MESSAGE_TOKEN,
		];
	}
}

usage.php

<?php

declare(strict_types=1);

$extractor = new Symfony\Component\Translation\Extractor\ChainExtractor();
$extractor->addExtractor('latte', new App\Infrastructure\Localization\Extractor\LatteExtractor());
$extractor->addExtractor('php', new App\Infrastructure\Localization\Extractor\NetteTranslatorExtractor());

$sourceDirectory = __DIR__;
$extractedKeys = new MessageCatalogue(NULL);
$extractor->extract($sourceDirectory, $extractedKeys);