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Query.php
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Query.php
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<?php
/**
* This file is part of the Peast package
*
* (c) Marco Marchiò <marco.mm89@gmail.com>
*
* For the full copyright and license information refer to the LICENSE file
* distributed with this source code
*/
namespace Peast;
/**
* Nodes query class
*
* @author Marco Marchiò <marco.mm89@gmail.com>
*/
class Query implements \IteratorAggregate, \Countable
{
/**
* Current matches
*
* @var Selector\Matches
*/
protected $matches;
/**
* Options array
*
* @var array
*/
protected $options;
/**
* Class constructor. Available options are:
* - encoding: selectors encoding. If not specified the
* parser will assume UTF-8.
*
* @param Syntax\Node\Program $root Root node
* @param array $options Options array
*/
public function __construct(Syntax\Node\Program $root, $options = array())
{
$this->matches = new Selector\Matches();
$this->matches->addMatch($root);
$this->options = $options;
}
/**
* Finds nodes matching the given selector starting from the
* current matched nodes, if any, or from the root
*
* @param string $selector Selector
*
* @return $this
*
* @throws Selector\Exception
*/
public function find($selector)
{
$parser = new Selector\Parser($selector, $this->options);
$selector = $parser->parse();
$this->matches = $selector->exec($this->matches);
return $this;
}
/**
* Executes the given selector on the current nodes and filters
* out the nodes which don't match
*
* @param string $selector Selector
*
* @return $this
*
* @throws Selector\Exception
*/
public function filter($selector)
{
$parser = new Selector\Parser($selector, $this->options);
$selector = $parser->parse(true);
$this->matches->filter(function ($node, $parent) use ($selector) {
$newMatch = new Selector\Matches();
$newMatch->addMatch($node, $parent);
return $selector->exec($newMatch)->getMatches();
});
return $this;
}
/**
* Returns the number of matched nodes
*
* @return int
*/
#[\ReturnTypeWillChange]
public function count()
{
return $this->matches->count();
}
/**
* Returns the node at the given index
*
* @param int $index Index
*
* @return array
*
* @throws \Exception
*/
public function get($index)
{
return $this->matches->get($index)[0];
}
/**
* Returns the nodes iterator
*
* @return \ArrayIterator
*/
#[\ReturnTypeWillChange]
public function getIterator()
{
return new \ArrayIterator($this->matches->getNodes());
}
}

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Expires
Aug 16 2026, 16:41 (11 w, 6 d ago)
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Query.php (2 KB)

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