--- /dev/null
+<?php declare(strict_types=1);
+
+namespace PhpParser\NodeVisitor;
+
+use PhpParser\Node;
+use PhpParser\NodeVisitorAbstract;
+
+/**
+ * Visitor cloning all nodes and linking to the original nodes using an attribute.
+ *
+ * This visitor is required to perform format-preserving pretty prints.
+ */
+class CloningVisitor extends NodeVisitorAbstract
+{
+ public function enterNode(Node $origNode) {
+ $node = clone $origNode;
+ $node->setAttribute('origNode', $origNode);
+ return $node;
+ }
+}