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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\Translation\Extractor;
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use PhpParser\NodeTraverser;
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use PhpParser\NodeVisitor;
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use PhpParser\Parser;
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use PhpParser\ParserFactory;
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use Symfony\Component\Finder\Finder;
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use Symfony\Component\Translation\Extractor\Visitor\AbstractVisitor;
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use Symfony\Component\Translation\MessageCatalogue;
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/**
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* PhpAstExtractor extracts translation messages from a PHP AST.
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*
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* @author Mathieu Santostefano <msantostefano@protonmail.com>
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*/
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final class PhpAstExtractor extends AbstractFileExtractor implements ExtractorInterface
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{
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private Parser $parser;
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public function __construct(
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/**
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* @param iterable<AbstractVisitor&NodeVisitor> $visitors
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*/
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private readonly iterable $visitors,
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private string $prefix = '',
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) {
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if (!class_exists(ParserFactory::class)) {
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throw new \LogicException(sprintf('You cannot use "%s" as the "nikic/php-parser" package is not installed. Try running "composer require nikic/php-parser".', static::class));
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}
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$this->parser = (new ParserFactory())->create(ParserFactory::PREFER_PHP7);
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}
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public function extract(iterable|string $resource, MessageCatalogue $catalogue): void
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{
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foreach ($this->extractFiles($resource) as $file) {
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$traverser = new NodeTraverser();
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/** @var AbstractVisitor&NodeVisitor $visitor */
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foreach ($this->visitors as $visitor) {
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$visitor->initialize($catalogue, $file, $this->prefix);
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$traverser->addVisitor($visitor);
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}
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$nodes = $this->parser->parse(file_get_contents($file));
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$traverser->traverse($nodes);
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}
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}
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public function setPrefix(string $prefix): void
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{
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$this->prefix = $prefix;
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}
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protected function canBeExtracted(string $file): bool
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{
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return 'php' === pathinfo($file, \PATHINFO_EXTENSION) && $this->isFile($file);
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}
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protected function extractFromDirectory(array|string $resource): iterable|Finder
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{
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if (!class_exists(Finder::class)) {
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throw new \LogicException(sprintf('You cannot use "%s" as the "symfony/finder" package is not installed. Try running "composer require symfony/finder".', static::class));
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}
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return (new Finder())->files()->name('*.php')->in($resource);
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}
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}
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