Doctrine\ORM\Query\Parser::Literal PHP Метод

    public function Literal()
    {
        switch ($this->_lexer->lookahead['type']) {
            case Lexer::T_STRING:
                $this->match(Lexer::T_STRING);
                return new AST\Literal(AST\Literal::STRING, $this->_lexer->token['value']);

            case Lexer::T_INTEGER:
            case Lexer::T_FLOAT:
                $this->match(
                    $this->_lexer->isNextToken(Lexer::T_INTEGER) ? Lexer::T_INTEGER : Lexer::T_FLOAT
                );
                return new AST\Literal(AST\Literal::NUMERIC, $this->_lexer->token['value']);

            case Lexer::T_TRUE:
            case Lexer::T_FALSE:
                $this->match(
                    $this->_lexer->isNextToken(Lexer::T_TRUE) ? Lexer::T_TRUE : Lexer::T_FALSE
                );
                return new AST\Literal(AST\Literal::BOOLEAN, $this->_lexer->token['value']);

            default:
                $this->syntaxError('Literal');
        }
    }

 /**
  * {@inheritdoc}
  */
 public function parse(Parser $parser)
 {
     $parser->match(Lexer::T_IDENTIFIER);
     $parser->match(Lexer::T_OPEN_PARENTHESIS);
     $this->parameters[self::PARAMETER_KEY] = $parser->ArithmeticPrimary();
     $parser->match(Lexer::T_AS);
     $parser->match(Lexer::T_IDENTIFIER);
     $lexer = $parser->getLexer();
     $type = $lexer->token['value'];
     if ($lexer->isNextToken(Lexer::T_OPEN_PARENTHESIS)) {
         $parser->match(Lexer::T_OPEN_PARENTHESIS);
         /** @var Literal $parameter */
         $parameter = $parser->Literal();
         $parameters = array($parameter->value);
         if ($lexer->isNextToken(Lexer::T_COMMA)) {
             while ($lexer->isNextToken(Lexer::T_COMMA)) {
                 $parser->match(Lexer::T_COMMA);
                 $parameter = $parser->Literal();
                 $parameters[] = $parameter->value;
             }
         }
         $parser->match(Lexer::T_CLOSE_PARENTHESIS);
         $type .= '(' . implode(', ', $parameters) . ')';
     }
     if (!$this->checkType($type)) {
         $parser->syntaxError(sprintf('Type unsupported. Supported types are: "%s"', implode(', ', $this->supportedTypes)), $lexer->token);
     }
     $this->parameters[self::TYPE_KEY] = $type;
     $parser->match(Lexer::T_CLOSE_PARENTHESIS);
 }