Make XLSX reader return Row objects

src/Spout/Reader/Common/Entity/Row.php

@@ -29,7 +29,7 @@ class Row
 
     /**
      * @param Cell[] $cells
-     * @return $this
+     * @return Row
      */
     public function setCells(array $cells)
     {
@@ -41,6 +41,19 @@ class Row
         return $this;
     }
 
+    /**
+     * @param Cell $cell
+     * @param mixed $cellIndex
+     * @parma int $cellIndex
+     * @return Row
+     */
+    public function setCellAtIndex(Cell $cell, $cellIndex)
+    {
+        $this->cells[$cellIndex] = $cell;
+
+        return $this;
+    }
+
     /**
      * @param Cell $cell
      * @return Row