<?php

namespace DoctrineExtensions\Query\Oracle;

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

/**
 * @author Andréia Bohner <andreiabohner@gmail.com>
 */
class Year extends FunctionNode
{
    private $date;

    public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
    {
        return sprintf(
                'EXTRACT(YEAR FROM %s)',
                $sqlWalker->walkArithmeticPrimary($this->date));
    }

    public function parse(\Doctrine\ORM\Query\Parser $parser)
    {
        $parser->match(Lexer::T_IDENTIFIER);
        $parser->match(Lexer::T_OPEN_PARENTHESIS);
        $this->date = $parser->ArithmeticPrimary();
        $parser->match(Lexer::T_CLOSE_PARENTHESIS);
    }
}
