doctrine / orm

        $aliasResultVariable = null;

        if ($mustHaveAliasResultVariable || $this->lexer->isNextToken(Lexer::T_IDENTIFIER)) {

            $token = $this->lexer->lookahead;

            $aliasResultVariable = $this->AliasResultVariable();

            // Include AliasResultVariable in query components.

            $this->queryComponents[$aliasResultVariable] = [

                'resultVariable' => $expression,

                'nestingLevel'   => $this->nestingLevel,

                'token'          => $token,

            ];

        }

        // AST

            $this->match(Lexer::T_AS);

        }

        if ($this->lexer->isNextToken(Lexer::T_IDENTIFIER)) {

            $token = $this->lexer->lookahead;

            $resultVariable = $this->AliasResultVariable();

            $expr->fieldIdentificationVariable = $resultVariable;

            // Include AliasResultVariable in query components.

            $this->queryComponents[$resultVariable] = [

                'resultvariable' => $expr,

                'nestingLevel'   => $this->nestingLevel,

                'token'          => $token,

            ];

        }

        return $expr;

    }