vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.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 Symfony\Component\DependencyInjection\Dumper;

use Symfony\Component\DependencyInjection\Variable;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\DependencyInjection\Parameter;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface as ProxyDumper;
use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\NullDumper;
use Symfony\Component\DependencyInjection\ExpressionLanguage;
use Symfony\Component\ExpressionLanguage\Expression;
use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
use Symfony\Component\HttpKernel\Kernel;

/**
 * PhpDumper dumps a service container as a PHP class.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class PhpDumper extends Dumper
{
    /**
     * Characters that might appear in the generated variable name as first character.
     *
     * @var string
     */
    const FIRST_CHARS = 'abcdefghijklmnopqrstuvwxyz';

    /**
     * Characters that might appear in the generated variable name as any but the first character.
     *
     * @var string
     */
    const NON_FIRST_CHARS = 'abcdefghijklmnopqrstuvwxyz0123456789_';

    private $inlinedDefinitions;
    private $definitionVariables;
    private $referenceVariables;
    private $variableCount;
    private $reservedVariables = array('instance', 'class');
    private $expressionLanguage;
    private $targetDirRegex;
    private $targetDirMaxMatches;