<?php



namespace DoctrineExtensions\Query\Mysql;



use Doctrine\ORM\Query\AST\Functions\FunctionNode,

    Doctrine\ORM\Query\Lexer;



class Log2 extends FunctionNode

{

    public $arithmeticExpression;

    public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)

    {

        return 'LOG2(' . $sqlWalker->walkSimpleArithmeticExpression(

                $this->arithmeticExpression

        ) . ')';

    }



    public function parse(\Doctrine\ORM\Query\Parser $parser)

    {

        $parser->match(Lexer::T_IDENTIFIER);

        $parser->match(Lexer::T_OPEN_PARENTHESIS);

        $this->arithmeticExpression = $parser->SimpleArithmeticExpression();

        $parser->match(Lexer::T_CLOSE_PARENTHESIS);

    }

}

