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<?php
namespace PhpOffice\PhpSpreadsheet\Worksheet;
use Iterator as NativeIterator;
use PhpOffice\PhpSpreadsheet\Cell\Cell;
use PhpOffice\PhpSpreadsheet\Collection\Cells;
/**
* @template TKey
*
* @implements NativeIterator<TKey, Cell>
*/
abstract class CellIterator implements NativeIterator
{
public const TREAT_NULL_VALUE_AS_EMPTY_CELL = 1;
public const TREAT_EMPTY_STRING_AS_EMPTY_CELL = 2;
public const IF_NOT_EXISTS_RETURN_NULL = false;
public const IF_NOT_EXISTS_CREATE_NEW = true;
/**
* Worksheet to iterate.
*
* @var Worksheet
*/
protected $worksheet;
/**
* Cell Collection to iterate.
*
* @var Cells
*/
protected $cellCollection;
/**
* Iterate only existing cells.
*
* @var bool
*/
protected $onlyExistingCells = false;
/**
* If iterating all cells, and a cell doesn't exist, identifies whether a new cell should be created,
* or if the iterator should return a null value.
*
* @var bool
*/
protected $ifNotExists = self::IF_NOT_EXISTS_CREATE_NEW;
/**
* Destructor.
*/
public function __destruct()
{
// @phpstan-ignore-next-line
$this->worksheet = $this->cellCollection = null;
}
public function getIfNotExists(): bool
{
return $this->ifNotExists;
}
public function setIfNotExists(bool $ifNotExists = self::IF_NOT_EXISTS_CREATE_NEW): void
{
$this->ifNotExists = $ifNotExists;
}
/**
* Get loop only existing cells.
*/
public function getIterateOnlyExistingCells(): bool
{
return $this->onlyExistingCells;
}
/**
* Validate start/end values for 'IterateOnlyExistingCells' mode, and adjust if necessary.
*/
abstract protected function adjustForExistingOnlyRange(): void;
/**
* Set the iterator to loop only existing cells.
*/
public function setIterateOnlyExistingCells(bool $value): void
{
$this->onlyExistingCells = (bool) $value;
$this->adjustForExistingOnlyRange();
}
}
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