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<?php
/*
* This file is part of the php-code-coverage package.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\CodeCoverage\Node;
/**
* Recursive iterator for node object graphs.
*/
class Iterator implements \RecursiveIterator
{
/**
* @var int
*/
private $position;
/**
* @var AbstractNode[]
*/
private $nodes;
/**
* @param Directory $node
*/
public function __construct(Directory $node)
{
$this->nodes = $node->getChildNodes();
}
/**
* Rewinds the Iterator to the first element.
*/
public function rewind()
{
$this->position = 0;
}
/**
* Checks if there is a current element after calls to rewind() or next().
*
* @return bool
*/
public function valid()
{
return $this->position < \count($this->nodes);
}
/**
* Returns the key of the current element.
*
* @return int
*/
public function key()
{
return $this->position;
}
/**
* Returns the current element.
*
* @return \PHPUnit_Framework_Test
*/
public function current()
{
return $this->valid() ? $this->nodes[$this->position] : null;
}
/**
* Moves forward to next element.
*/
public function next()
{
$this->position++;
}
/**
* Returns the sub iterator for the current element.
*
* @return Iterator
*/
public function getChildren()
{
return new self(
$this->nodes[$this->position]
);
}
/**
* Checks whether the current element has children.
*
* @return bool
*/
public function hasChildren()
{
return $this->nodes[$this->position] instanceof Directory;
}
}