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<?php
/**
* This file is part of the FastFeed package.
*
* (c) Daniel González <daniel@desarrolla2.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace FastFeed\Parser;
use DOMElement;
use FastFeed\Item;
use FastFeed\Aggregator\AggregatorInterface;
use FastFeed\Exception\LogicException;
/**
* AbstractParser
*/
abstract class AbstractParser extends AbstractDomParser
{
/**
* @var array
*/
protected $aggregators = array();
/**
* @return mixed
* @throws \FastFeed\Exception\LogicException
*/
public function popAggregator()
{
if (!$this->aggregators) {
throw new LogicException('You tried to pop from an empty Aggregator stack.');
}
return array_shift($this->aggregators);
}
/**
* @param AggregatorInterface $aggregator
*/
public function pushAggregator(AggregatorInterface $aggregator)
{
$this->aggregators[] = $aggregator;
}
/**
* @param DOMElement $node
* @param Item $item
*/
protected function executeAggregators(DOMElement $node, Item $item)
{
foreach ($this->aggregators as $aggregator) {
$aggregator->process($node, $item);
}
}
/**
* @return array
*/
abstract protected function getPropertiesMapping();
/**
* @param DOMElement $node
* @param Item $item
*/
protected function setProperties(DOMElement $node, Item $item)
{
$propertiesMapping = $this->getPropertiesMapping();
foreach ($propertiesMapping as $methodName => $propertyName) {
$value = $this->getNodeValueByTagName($node, $propertyName);
if ($value) {
$item->$methodName($value);
}
}
}
}