Alter Version

vendor/PhpSpreadsheet/Worksheet/CellIterator.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Worksheet;
+
+use Iterator;
+
+abstract class CellIterator implements Iterator
+{
+    /**
+     * Worksheet to iterate.
+     *
+     * @var Worksheet
+     */
+    protected $worksheet;
+
+    /**
+     * Iterate only existing cells.
+     *
+     * @var bool
+     */
+    protected $onlyExistingCells = false;
+
+    /**
+     * Destructor.
+     */
+    public function __destruct()
+    {
+        $this->worksheet = null;
+    }
+
+    /**
+     * Get loop only existing cells.
+     *
+     * @return bool
+     */
+    public function getIterateOnlyExistingCells()
+    {
+        return $this->onlyExistingCells;
+    }
+
+    /**
+     * Validate start/end values for "IterateOnlyExistingCells" mode, and adjust if necessary.
+     */
+    abstract protected function adjustForExistingOnlyRange();
+
+    /**
+     * Set the iterator to loop only existing cells.
+     *
+     * @param bool $value
+     */
+    public function setIterateOnlyExistingCells($value): void
+    {
+        $this->onlyExistingCells = (bool) $value;
+
+        $this->adjustForExistingOnlyRange();
+    }
+}