﻿PK      �Zd��C5  5    ChainExtractor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor;

use Symfony\Component\Translation\MessageCatalogue;

/**
 * ChainExtractor extracts translation messages from template files.
 *
 * @author Michel Salib <michelsalib@hotmail.com>
 */
class ChainExtractor implements ExtractorInterface
{
    /**
     * The extractors.
     *
     * @var ExtractorInterface[]
     */
    private array $extractors = [];

    /**
     * Adds a loader to the translation extractor.
     *
     * @return void
     */
    public function addExtractor(string $format, ExtractorInterface $extractor)
    {
        $this->extractors[$format] = $extractor;
    }

    /**
     * @return void
     */
    public function setPrefix(string $prefix)
    {
        foreach ($this->extractors as $extractor) {
            $extractor->setPrefix($prefix);
        }
    }

    /**
     * @return void
     */
    public function extract(string|iterable $directory, MessageCatalogue $catalogue)
    {
        foreach ($this->extractors as $extractor) {
            $extractor->extract($directory, $catalogue);
        }
    }
}
PK      �Z��Ӎ      ExtractorInterface.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor;

use Symfony\Component\Translation\MessageCatalogue;

/**
 * Extracts translation messages from a directory or files to the catalogue.
 * New found messages are injected to the catalogue using the prefix.
 *
 * @author Michel Salib <michelsalib@hotmail.com>
 */
interface ExtractorInterface
{
    /**
     * Extracts translation messages from files, a file or a directory to the catalogue.
     *
     * @param string|iterable<string> $resource Files, a file or a directory
     *
     * @return void
     */
    public function extract(string|iterable $resource, MessageCatalogue $catalogue);

    /**
     * Sets the prefix that should be used for new found messages.
     *
     * @return void
     */
    public function setPrefix(string $prefix);
}
PK      �Z�0�#�  �    Visitor/TransMethodVisitor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor\Visitor;

use PhpParser\Node;
use PhpParser\NodeVisitor;

/**
 * @author Mathieu Santostefano <msantostefano@protonmail.com>
 */
final class TransMethodVisitor extends AbstractVisitor implements NodeVisitor
{
    public function beforeTraverse(array $nodes): ?Node
    {
        return null;
    }

    public function enterNode(Node $node): ?Node
    {
        if (!$node instanceof Node\Expr\MethodCall && !$node instanceof Node\Expr\FuncCall) {
            return null;
        }

        if (!\is_string($node->name) && !$node->name instanceof Node\Identifier && !$node->name instanceof Node\Name) {
            return null;
        }

        $name = (string) $node->name;

        if ('trans' === $name || 't' === $name) {
            $firstNamedArgumentIndex = $this->nodeFirstNamedArgumentIndex($node);

            if (!$messages = $this->getStringArguments($node, 0 < $firstNamedArgumentIndex ? 0 : 'message')) {
                return null;
            }

            $domain = $this->getStringArguments($node, 2 < $firstNamedArgumentIndex ? 2 : 'domain')[0] ?? null;

            foreach ($messages as $message) {
                $this->addMessageToCatalogue($message, $domain, $node->getStartLine());
            }
        }

        return null;
    }

    public function leaveNode(Node $node): ?Node
    {
        return null;
    }

    public function afterTraverse(array $nodes): ?Node
    {
        return null;
    }
}
PK      �Z�c6
N  N  &  Visitor/TranslatableMessageVisitor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor\Visitor;

use PhpParser\Node;
use PhpParser\NodeVisitor;

/**
 * @author Mathieu Santostefano <msantostefano@protonmail.com>
 */
final class TranslatableMessageVisitor extends AbstractVisitor implements NodeVisitor
{
    public function beforeTraverse(array $nodes): ?Node
    {
        return null;
    }

    public function enterNode(Node $node): ?Node
    {
        if (!$node instanceof Node\Expr\New_) {
            return null;
        }

        if (!($className = $node->class) instanceof Node\Name) {
            return null;
        }

        if (!\in_array('TranslatableMessage', $className->parts, true)) {
            return null;
        }

        $firstNamedArgumentIndex = $this->nodeFirstNamedArgumentIndex($node);

        if (!$messages = $this->getStringArguments($node, 0 < $firstNamedArgumentIndex ? 0 : 'message')) {
            return null;
        }

        $domain = $this->getStringArguments($node, 2 < $firstNamedArgumentIndex ? 2 : 'domain')[0] ?? null;

        foreach ($messages as $message) {
            $this->addMessageToCatalogue($message, $domain, $node->getStartLine());
        }

        return null;
    }

    public function leaveNode(Node $node): ?Node
    {
        return null;
    }

    public function afterTraverse(array $nodes): ?Node
    {
        return null;
    }
}
PK      �Z,�o�k  k    Visitor/ConstraintVisitor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor\Visitor;

use PhpParser\Node;
use PhpParser\NodeVisitor;

/**
 * @author Mathieu Santostefano <msantostefano@protonmail.com>
 *
 * Code mostly comes from https://github.com/php-translation/extractor/blob/master/src/Visitor/Php/Symfony/Constraint.php
 */
final class ConstraintVisitor extends AbstractVisitor implements NodeVisitor
{
    public function __construct(
        private readonly array $constraintClassNames = []
    ) {
    }

    public function beforeTraverse(array $nodes): ?Node
    {
        return null;
    }

    public function enterNode(Node $node): ?Node
    {
        if (!$node instanceof Node\Expr\New_ && !$node instanceof Node\Attribute) {
            return null;
        }

        $className = $node instanceof Node\Attribute ? $node->name : $node->class;
        if (!$className instanceof Node\Name) {
            return null;
        }

        $parts = $className->parts;
        $isConstraintClass = false;

        foreach ($parts as $part) {
            if (\in_array($part, $this->constraintClassNames, true)) {
                $isConstraintClass = true;

                break;
            }
        }

        if (!$isConstraintClass) {
            return null;
        }

        $arg = $node->args[0] ?? null;
        if (!$arg instanceof Node\Arg) {
            return null;
        }

        if ($this->hasNodeNamedArguments($node)) {
            $messages = $this->getStringArguments($node, '/message/i', true);
        } else {
            if (!$arg->value instanceof Node\Expr\Array_) {
                // There is no way to guess which argument is a message to be translated.
                return null;
            }

            $messages = [];
            $options = $arg->value;

            /** @var Node\Expr\ArrayItem $item */
            foreach ($options->items as $item) {
                if (!$item->key instanceof Node\Scalar\String_) {
                    continue;
                }

                if (false === stripos($item->key->value ?? '', 'message')) {
                    continue;
                }

                if (!$item->value instanceof Node\Scalar\String_) {
                    continue;
                }

                $messages[] = $item->value->value;

                break;
            }
        }

        foreach ($messages as $message) {
            $this->addMessageToCatalogue($message, 'validators', $node->getStartLine());
        }

        return null;
    }

    public function leaveNode(Node $node): ?Node
    {
        return null;
    }

    public function afterTraverse(array $nodes): ?Node
    {
        return null;
    }
}
PK      �Z>�$��  �    Visitor/AbstractVisitor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor\Visitor;

use PhpParser\Node;
use Symfony\Component\Translation\MessageCatalogue;

/**
 * @author Mathieu Santostefano <msantostefano@protonmail.com>
 */
abstract class AbstractVisitor
{
    private MessageCatalogue $catalogue;
    private \SplFileInfo $file;
    private string $messagePrefix;

    public function initialize(MessageCatalogue $catalogue, \SplFileInfo $file, string $messagePrefix): void
    {
        $this->catalogue = $catalogue;
        $this->file = $file;
        $this->messagePrefix = $messagePrefix;
    }

    protected function addMessageToCatalogue(string $message, ?string $domain, int $line): void
    {
        $domain ??= 'messages';
        $this->catalogue->set($message, $this->messagePrefix.$message, $domain);
        $metadata = $this->catalogue->getMetadata($message, $domain) ?? [];
        $normalizedFilename = preg_replace('{[\\\\/]+}', '/', $this->file);
        $metadata['sources'][] = $normalizedFilename.':'.$line;
        $this->catalogue->setMetadata($message, $metadata, $domain);
    }

    protected function getStringArguments(Node\Expr\CallLike|Node\Attribute|Node\Expr\New_ $node, int|string $index, bool $indexIsRegex = false): array
    {
        if (\is_string($index)) {
            return $this->getStringNamedArguments($node, $index, $indexIsRegex);
        }

        $args = $node instanceof Node\Expr\CallLike ? $node->getRawArgs() : $node->args;

        if (!($arg = $args[$index] ?? null) instanceof Node\Arg) {
            return [];
        }

        return (array) $this->getStringValue($arg->value);
    }

    protected function hasNodeNamedArguments(Node\Expr\CallLike|Node\Attribute|Node\Expr\New_ $node): bool
    {
        $args = $node instanceof Node\Expr\CallLike ? $node->getRawArgs() : $node->args;

        foreach ($args as $arg) {
            if ($arg instanceof Node\Arg && null !== $arg->name) {
                return true;
            }
        }

        return false;
    }

    protected function nodeFirstNamedArgumentIndex(Node\Expr\CallLike|Node\Attribute|Node\Expr\New_ $node): int
    {
        $args = $node instanceof Node\Expr\CallLike ? $node->getRawArgs() : $node->args;

        foreach ($args as $i => $arg) {
            if ($arg instanceof Node\Arg && null !== $arg->name) {
                return $i;
            }
        }

        return \PHP_INT_MAX;
    }

    private function getStringNamedArguments(Node\Expr\CallLike|Node\Attribute $node, string $argumentName = null, bool $isArgumentNamePattern = false): array
    {
        $args = $node instanceof Node\Expr\CallLike ? $node->getArgs() : $node->args;
        $argumentValues = [];

        foreach ($args as $arg) {
            if (!$isArgumentNamePattern && $arg->name?->toString() === $argumentName) {
                $argumentValues[] = $this->getStringValue($arg->value);
            } elseif ($isArgumentNamePattern && preg_match($argumentName, $arg->name?->toString() ?? '') > 0) {
                $argumentValues[] = $this->getStringValue($arg->value);
            }
        }

        return array_filter($argumentValues);
    }

    private function getStringValue(Node $node): ?string
    {
        if ($node instanceof Node\Scalar\String_) {
            return $node->value;
        }

        if ($node instanceof Node\Expr\BinaryOp\Concat) {
            if (null === $left = $this->getStringValue($node->left)) {
                return null;
            }

            if (null === $right = $this->getStringValue($node->right)) {
                return null;
            }

            return $left.$right;
        }

        if ($node instanceof Node\Expr\Assign && $node->expr instanceof Node\Scalar\String_) {
            return $node->expr->value;
        }

        return null;
    }
}
PK      �Z9��f  f    PhpStringTokenParser.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor;

trigger_deprecation('symfony/translation', '6.2', '"%s" is deprecated.', PhpStringTokenParser::class);

/*
 * The following is derived from code at http://github.com/nikic/PHP-Parser
 *
 * Copyright (c) 2011 by Nikita Popov
 *
 * Some rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *
 *     * The names of the contributors may not be used to endorse or
 *       promote products derived from this software without specific
 *       prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * @deprecated since Symfony 6.2
 */
class PhpStringTokenParser
{
    protected static $replacements = [
        '\\' => '\\',
        '$' => '$',
        'n' => "\n",
        'r' => "\r",
        't' => "\t",
        'f' => "\f",
        'v' => "\v",
        'e' => "\x1B",
    ];

    /**
     * Parses a string token.
     *
     * @param string $str String token content
     */
    public static function parse(string $str): string
    {
        $bLength = 0;
        if ('b' === $str[0]) {
            $bLength = 1;
        }

        if ('\'' === $str[$bLength]) {
            return str_replace(
                ['\\\\', '\\\''],
                ['\\', '\''],
                substr($str, $bLength + 1, -1)
            );
        } else {
            return self::parseEscapeSequences(substr($str, $bLength + 1, -1), '"');
        }
    }

    /**
     * Parses escape sequences in strings (all string types apart from single quoted).
     *
     * @param string      $str   String without quotes
     * @param string|null $quote Quote type
     */
    public static function parseEscapeSequences(string $str, string $quote = null): string
    {
        if (null !== $quote) {
            $str = str_replace('\\'.$quote, $quote, $str);
        }

        return preg_replace_callback(
            '~\\\\([\\\\$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3})~',
            [__CLASS__, 'parseCallback'],
            $str
        );
    }

    private static function parseCallback(array $matches): string
    {
        $str = $matches[1];

        if (isset(self::$replacements[$str])) {
            return self::$replacements[$str];
        } elseif ('x' === $str[0] || 'X' === $str[0]) {
            return \chr(hexdec($str));
        } else {
            return \chr(octdec($str));
        }
    }

    /**
     * Parses a constant doc string.
     *
     * @param string $startToken Doc string start token content (<<<SMTHG)
     * @param string $str        String token content
     */
    public static function parseDocString(string $startToken, string $str): string
    {
        // strip last newline (thanks tokenizer for sticking it into the string!)
        $str = preg_replace('~(\r\n|\n|\r)$~', '', $str);

        // nowdoc string
        if (str_contains($startToken, '\'')) {
            return $str;
        }

        return self::parseEscapeSequences($str, null);
    }
}
PK      �Zf��
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    PhpAstExtractor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor;

use PhpParser\NodeTraverser;
use PhpParser\NodeVisitor;
use PhpParser\Parser;
use PhpParser\ParserFactory;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Translation\Extractor\Visitor\AbstractVisitor;
use Symfony\Component\Translation\MessageCatalogue;

/**
 * PhpAstExtractor extracts translation messages from a PHP AST.
 *
 * @author Mathieu Santostefano <msantostefano@protonmail.com>
 */
final class PhpAstExtractor extends AbstractFileExtractor implements ExtractorInterface
{
    private Parser $parser;

    public function __construct(
        /**
         * @param iterable<AbstractVisitor&NodeVisitor> $visitors
         */
        private readonly iterable $visitors,
        private string $prefix = '',
    ) {
        if (!class_exists(ParserFactory::class)) {
            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));
        }

        $this->parser = (new ParserFactory())->create(ParserFactory::PREFER_PHP7);
    }

    public function extract(iterable|string $resource, MessageCatalogue $catalogue): void
    {
        foreach ($this->extractFiles($resource) as $file) {
            $traverser = new NodeTraverser();
            /** @var AbstractVisitor&NodeVisitor $visitor */
            foreach ($this->visitors as $visitor) {
                $visitor->initialize($catalogue, $file, $this->prefix);
                $traverser->addVisitor($visitor);
            }

            $nodes = $this->parser->parse(file_get_contents($file));
            $traverser->traverse($nodes);
        }
    }

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

    protected function canBeExtracted(string $file): bool
    {
        return 'php' === pathinfo($file, \PATHINFO_EXTENSION)
            && $this->isFile($file)
            && preg_match('/\bt\(|->trans\(|TranslatableMessage|Symfony\\\\Component\\\\Validator\\\\Constraints/i', file_get_contents($file));
    }

    protected function extractFromDirectory(array|string $resource): iterable|Finder
    {
        if (!class_exists(Finder::class)) {
            throw new \LogicException(sprintf('You cannot use "%s" as the "symfony/finder" package is not installed. Try running "composer require symfony/finder".', static::class));
        }

        return (new Finder())->files()->name('*.php')->in($resource);
    }
}
PK      �Z~�g�  �    AbstractFileExtractor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor;

use Symfony\Component\Translation\Exception\InvalidArgumentException;

/**
 * Base class used by classes that extract translation messages from files.
 *
 * @author Marcos D. Sánchez <marcosdsanchez@gmail.com>
 */
abstract class AbstractFileExtractor
{
    protected function extractFiles(string|iterable $resource): iterable
    {
        if (is_iterable($resource)) {
            $files = [];
            foreach ($resource as $file) {
                if ($this->canBeExtracted($file)) {
                    $files[] = $this->toSplFileInfo($file);
                }
            }
        } elseif (is_file($resource)) {
            $files = $this->canBeExtracted($resource) ? [$this->toSplFileInfo($resource)] : [];
        } else {
            $files = $this->extractFromDirectory($resource);
        }

        return $files;
    }

    private function toSplFileInfo(string $file): \SplFileInfo
    {
        return new \SplFileInfo($file);
    }

    /**
     * @throws InvalidArgumentException
     */
    protected function isFile(string $file): bool
    {
        if (!is_file($file)) {
            throw new InvalidArgumentException(sprintf('The "%s" file does not exist.', $file));
        }

        return true;
    }

    /**
     * @return bool
     */
    abstract protected function canBeExtracted(string $file);

    /**
     * @return iterable
     */
    abstract protected function extractFromDirectory(string|array $resource);
}
PK      �ZEv�<%  <%    PhpExtractor.phpnu W+A��        <?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 Symfony\Component\Translation\Extractor;

trigger_deprecation('symfony/translation', '6.2', '"%s" is deprecated, use "%s" instead.', PhpExtractor::class, PhpAstExtractor::class);

use Symfony\Component\Finder\Finder;
use Symfony\Component\Translation\MessageCatalogue;

/**
 * PhpExtractor extracts translation messages from a PHP template.
 *
 * @author Michel Salib <michelsalib@hotmail.com>
 *
 * @deprecated since Symfony 6.2, use the PhpAstExtractor instead
 */
class PhpExtractor extends AbstractFileExtractor implements ExtractorInterface
{
    public const MESSAGE_TOKEN = 300;
    public const METHOD_ARGUMENTS_TOKEN = 1000;
    public const DOMAIN_TOKEN = 1001;

    /**
     * Prefix for new found message.
     */
    private string $prefix = '';

    /**
     * The sequence that captures translation messages.
     */
    protected $sequences = [
        [
            '->',
            'trans',
            '(',
            self::MESSAGE_TOKEN,
            ',',
            self::METHOD_ARGUMENTS_TOKEN,
            ',',
            self::DOMAIN_TOKEN,
        ],
        [
            '->',
            'trans',
            '(',
            self::MESSAGE_TOKEN,
        ],
        [
            'new',
            'TranslatableMessage',
            '(',
            self::MESSAGE_TOKEN,
            ',',
            self::METHOD_ARGUMENTS_TOKEN,
            ',',
            self::DOMAIN_TOKEN,
        ],
        [
            'new',
            'TranslatableMessage',
            '(',
            self::MESSAGE_TOKEN,
        ],
        [
            'new',
            '\\',
            'Symfony',
            '\\',
            'Component',
            '\\',
            'Translation',
            '\\',
            'TranslatableMessage',
            '(',
            self::MESSAGE_TOKEN,
            ',',
            self::METHOD_ARGUMENTS_TOKEN,
            ',',
            self::DOMAIN_TOKEN,
        ],
        [
            'new',
            '\Symfony\Component\Translation\TranslatableMessage',
            '(',
            self::MESSAGE_TOKEN,
            ',',
            self::METHOD_ARGUMENTS_TOKEN,
            ',',
            self::DOMAIN_TOKEN,
        ],
        [
            'new',
            '\\',
            'Symfony',
            '\\',
            'Component',
            '\\',
            'Translation',
            '\\',
            'TranslatableMessage',
            '(',
            self::MESSAGE_TOKEN,
        ],
        [
            'new',
            '\Symfony\Component\Translation\TranslatableMessage',
            '(',
            self::MESSAGE_TOKEN,
        ],
        [
            't',
            '(',
            self::MESSAGE_TOKEN,
            ',',
            self::METHOD_ARGUMENTS_TOKEN,
            ',',
            self::DOMAIN_TOKEN,
        ],
        [
            't',
            '(',
            self::MESSAGE_TOKEN,
        ],
    ];

    /**
     * @return void
     */
    public function extract(string|iterable $resource, MessageCatalogue $catalog)
    {
        $files = $this->extractFiles($resource);
        foreach ($files as $file) {
            $this->parseTokens(token_get_all(file_get_contents($file)), $catalog, $file);

            gc_mem_caches();
        }
    }

    /**
     * @return void
     */
    public function setPrefix(string $prefix)
    {
        $this->prefix = $prefix;
    }

    /**
     * Normalizes a token.
     */
    protected function normalizeToken(mixed $token): ?string
    {
        if (isset($token[1]) && 'b"' !== $token) {
            return $token[1];
        }

        return $token;
    }

    /**
     * Seeks to a non-whitespace token.
     */
    private function seekToNextRelevantToken(\Iterator $tokenIterator): void
    {
        for (; $tokenIterator->valid(); $tokenIterator->next()) {
            $t = $tokenIterator->current();
            if (\T_WHITESPACE !== $t[0]) {
                break;
            }
        }
    }

    private function skipMethodArgument(\Iterator $tokenIterator): void
    {
        $openBraces = 0;

        for (; $tokenIterator->valid(); $tokenIterator->next()) {
            $t = $tokenIterator->current();

            if ('[' === $t[0] || '(' === $t[0]) {
                ++$openBraces;
            }

            if (']' === $t[0] || ')' === $t[0]) {
                --$openBraces;
            }

            if ((0 === $openBraces && ',' === $t[0]) || (-1 === $openBraces && ')' === $t[0])) {
                break;
            }
        }
    }

    /**
     * Extracts the message from the iterator while the tokens
     * match allowed message tokens.
     */
    private function getValue(\Iterator $tokenIterator): string
    {
        $message = '';
        $docToken = '';
        $docPart = '';

        for (; $tokenIterator->valid(); $tokenIterator->next()) {
            $t = $tokenIterator->current();
            if ('.' === $t) {
                // Concatenate with next token
                continue;
            }
            if (!isset($t[1])) {
                break;
            }

            switch ($t[0]) {
                case \T_START_HEREDOC:
                    $docToken = $t[1];
                    break;
                case \T_ENCAPSED_AND_WHITESPACE:
                case \T_CONSTANT_ENCAPSED_STRING:
                    if ('' === $docToken) {
                        $message .= PhpStringTokenParser::parse($t[1]);
                    } else {
                        $docPart = $t[1];
                    }
                    break;
                case \T_END_HEREDOC:
                    if ($indentation = strspn($t[1], ' ')) {
                        $docPartWithLineBreaks = $docPart;
                        $docPart = '';

                        foreach (preg_split('~(\r\n|\n|\r)~', $docPartWithLineBreaks, -1, \PREG_SPLIT_DELIM_CAPTURE) as $str) {
                            if (\in_array($str, ["\r\n", "\n", "\r"], true)) {
                                $docPart .= $str;
                            } else {
                                $docPart .= substr($str, $indentation);
                            }
                        }
                    }

                    $message .= PhpStringTokenParser::parseDocString($docToken, $docPart);
                    $docToken = '';
                    $docPart = '';
                    break;
                case \T_WHITESPACE:
                    break;
                default:
                    break 2;
            }
        }

        return $message;
    }

    /**
     * Extracts trans message from PHP tokens.
     *
     * @return void
     */
    protected function parseTokens(array $tokens, MessageCatalogue $catalog, string $filename)
    {
        $tokenIterator = new \ArrayIterator($tokens);

        for ($key = 0; $key < $tokenIterator->count(); ++$key) {
            foreach ($this->sequences as $sequence) {
                $message = '';
                $domain = 'messages';
                $tokenIterator->seek($key);

                foreach ($sequence as $sequenceKey => $item) {
                    $this->seekToNextRelevantToken($tokenIterator);

                    if ($this->normalizeToken($tokenIterator->current()) === $item) {
                        $tokenIterator->next();
                        continue;
                    } elseif (self::MESSAGE_TOKEN === $item) {
                        $message = $this->getValue($tokenIterator);

                        if (\count($sequence) === ($sequenceKey + 1)) {
                            break;
                        }
                    } elseif (self::METHOD_ARGUMENTS_TOKEN === $item) {
                        $this->skipMethodArgument($tokenIterator);
                    } elseif (self::DOMAIN_TOKEN === $item) {
                        $domainToken = $this->getValue($tokenIterator);
                        if ('' !== $domainToken) {
                            $domain = $domainToken;
                        }

                        break;
                    } else {
                        break;
                    }
                }

                if ($message) {
                    $catalog->set($message, $this->prefix.$message, $domain);
                    $metadata = $catalog->getMetadata($message, $domain) ?? [];
                    $normalizedFilename = preg_replace('{[\\\\/]+}', '/', $filename);
                    $metadata['sources'][] = $normalizedFilename.':'.$tokens[$key][2];
                    $catalog->setMetadata($message, $metadata, $domain);
                    break;
                }
            }
        }
    }

    /**
     * @throws \InvalidArgumentException
     */
    protected function canBeExtracted(string $file): bool
    {
        return $this->isFile($file) && 'php' === pathinfo($file, \PATHINFO_EXTENSION);
    }

    protected function extractFromDirectory(string|array $directory): iterable
    {
        if (!class_exists(Finder::class)) {
            throw new \LogicException(sprintf('You cannot use "%s" as the "symfony/finder" package is not installed. Try running "composer require symfony/finder".', static::class));
        }

        $finder = new Finder();

        return $finder->files()->name('*.php')->in($directory);
    }
}
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