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- <?php
- /*
- * This file is part of Psy Shell.
- *
- * (c) 2012-2023 Justin Hileman
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Psy;
- use PhpParser\Parser;
- use PhpParser\ParserFactory as OriginalParserFactory;
- /**
- * Parser factory to abstract over PHP parser library versions.
- */
- class ParserFactory
- {
- const ONLY_PHP5 = 'ONLY_PHP5';
- const ONLY_PHP7 = 'ONLY_PHP7';
- const PREFER_PHP5 = 'PREFER_PHP5';
- const PREFER_PHP7 = 'PREFER_PHP7';
- /**
- * Possible kinds of parsers for the factory, from PHP parser library.
- *
- * @return string[]
- */
- public static function getPossibleKinds(): array
- {
- return ['ONLY_PHP5', 'ONLY_PHP7', 'PREFER_PHP5', 'PREFER_PHP7'];
- }
- /**
- * Default kind (if supported, based on current interpreter's version).
- *
- * @return string|null
- */
- public function getDefaultKind()
- {
- return static::ONLY_PHP7;
- }
- /**
- * New parser instance with given kind.
- *
- * @param string|null $kind One of class constants (only for PHP parser 2.0 and above)
- */
- public function createParser($kind = null): Parser
- {
- $originalFactory = new OriginalParserFactory();
- $kind = $kind ?: $this->getDefaultKind();
- if (!\in_array($kind, static::getPossibleKinds())) {
- throw new \InvalidArgumentException('Unknown parser kind');
- }
- $parser = $originalFactory->create(\constant(OriginalParserFactory::class.'::'.$kind));
- return $parser;
- }
- }
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