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<?php declare(strict_types=1);
/*
* This file is part of phpunit/php-code-coverage.
*
* (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;
use function count;
use RecursiveIterator;
/**
* @internal This class is not covered by the backward compatibility promise for phpunit/php-code-coverage
*/
final class Iterator implements RecursiveIterator
{
/**
* @var int
*/
private $position;
/**
* @var AbstractNode[]
*/
private $nodes;
public function __construct(Directory $node)
{
$this->nodes = $node->children();
}
/**
* Rewinds the Iterator to the first element.
*/
public function rewind(): void
{
$this->position = 0;
}
/**
* Checks if there is a current element after calls to rewind() or next().
*/
public function valid(): bool
{
return $this->position < count($this->nodes);
}
/**
* Returns the key of the current element.
*/
public function key(): int
{
return $this->position;
}
/**
* Returns the current element.
*/
public function current(): ?AbstractNode
{
return $this->valid() ? $this->nodes[$this->position] : null;
}
/**
* Moves forward to next element.
*/
public function next(): void
{
$this->position++;
}
/**
* Returns the sub iterator for the current element.
*/
public function getChildren(): self
{
return new self($this->nodes[$this->position]);
}
/**
* Checks whether the current element has children.
*/
public function hasChildren(): bool
{
return $this->nodes[$this->position] instanceof Directory;
}
}
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