--- /dev/null
+<?php
+
+namespace Drupal\Component\Diff\Engine;
+
+/**
+ * @todo document
+ * @private
+ * @subpackage DifferenceEngine
+ */
+class DiffOpChange extends DiffOp {
+ public $type = 'change';
+
+ public function __construct($orig, $closing) {
+ $this->orig = $orig;
+ $this->closing = $closing;
+ }
+
+ public function reverse() {
+ return new DiffOpChange($this->closing, $this->orig);
+ }
+
+}