Security update for Core, with self-updated composer

[yaffs-website] / web / core / lib / Drupal / Core / Field / MapFieldItemList.php

diff --git a/web/core/lib/Drupal/Core/Field/MapFieldItemList.php b/web/core/lib/Drupal/Core/Field/MapFieldItemList.php
new file mode 100644 (file)
index 0000000..2d86dae
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Field/MapFieldItemList.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Drupal\Core\Field;
+
+/**
+ * Defines a item list class for map fields.
+ */
+class MapFieldItemList extends FieldItemList {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function equals(FieldItemListInterface $list_to_compare) {
+    $count1 = count($this);
+    $count2 = count($list_to_compare);
+    if ($count1 === 0 && $count2 === 0) {
+      // Both are empty we can safely assume that it did not change.
+      return TRUE;
+    }
+    if ($count1 !== $count2) {
+      // The number of items is different so they do not have the same values.
+      return FALSE;
+    }
+
+    // The map field type does not have any property defined (because they are
+    // dynamic), so the only way to evaluate the equality for it is to rely
+    // solely on its values.
+    $value1 = $this->getValue();
+    $value2 = $list_to_compare->getValue();
+
+    return $value1 == $value2;
+  }
+
+}