<?php

namespace Predis\Iterators;

class MultiBulkResponseTuple extends MultiBulkResponse {
    private $_iterator;

    public function __construct(MultiBulkResponseSimple $iterator) {
        $virtualSize = count($iterator) / 2;
        $this->_iterator   = $iterator;
        $this->_position   = 0;
        $this->_current    = $virtualSize > 0 ? $this->getValue() : null;
        $this->_replySize  = $virtualSize;
    }

    public function __destruct() {
        $this->_iterator->sync();
    }

    protected function getValue() {
        $k = $this->_iterator->current();
        $this->_iterator->next();
        $v = $this->_iterator->current();
        $this->_iterator->next();
        return array($k, $v);
    }
}