Registry.php

<?php

declare (strict_types=1);

/*
 * This file is part of PHPUnit.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace PHPUnit\Metadata\Parser;


/**
 * Attribute and annotation information is static within a single PHP process.
 * It is therefore okay to use a Singleton registry here.
 *
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
 *
 * @internal This class is not covered by the backward compatibility promise for PHPUnit
 */
final class Registry {
    private static ?Parser $instance = null;
    public static function parser() : Parser {
        return self::$instance ?? (self::$instance = self::build());
    }
    private static function build() : Parser {
        return new CachingParser(new ParserChain(new AttributeParser(), new AnnotationParser()));
    }

}