Nelmio\Alice\FixtureBuilder\ExpressionLanguage\Lexer\SubPatternsLexer::lexFragment PHP Метод

    private function lexFragment(LexerInterface $referenceLexer, string $valueFragment) : array
    {
        foreach (self::PATTERNS as $pattern => $tokenTypeConstant) {
            if (1 === preg_match($pattern, $valueFragment, $matches)) {
                if (null === $tokenTypeConstant) {
                    throw InvalidArgumentExceptionFactory::createForInvalidExpressionLanguageToken($valueFragment);
                }
                $match = $matches[1];
                if (self::REFERENCE_LEXER === $tokenTypeConstant) {
                    return $referenceLexer->lex($match);
                }
                return [new Token($match, new TokenType($tokenTypeConstant))];
            }
        }
        throw ExpressionLanguageExceptionFactory::createForCouldNotLexValue($valueFragment);
    }