Doctrine\ORM\Query\Parser::PartialObjectExpression PHP Method

    public function PartialObjectExpression()
    {
        $this->match(Lexer::T_PARTIAL);

        $partialFieldSet = array();

        $identificationVariable = $this->IdentificationVariable();
        $this->match(Lexer::T_DOT);

        $this->match(Lexer::T_OPEN_CURLY_BRACE);
        $this->match(Lexer::T_IDENTIFIER);
        $partialFieldSet[] = $this->_lexer->token['value'];

        while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
            $this->match(Lexer::T_COMMA);
            $this->match(Lexer::T_IDENTIFIER);
            $partialFieldSet[] = $this->_lexer->token['value'];
        }
        
        $this->match(Lexer::T_CLOSE_CURLY_BRACE);

        $partialObjectExpression = new AST\PartialObjectExpression($identificationVariable, $partialFieldSet);

        // Defer PartialObjectExpression validation
        $this->_deferredPartialObjectExpressions[] = array(
            'expression'   => $partialObjectExpression,
            'nestingLevel' => $this->_nestingLevel,
            'token'        => $this->_lexer->token,
        );

        return $partialObjectExpression;
    }