MC-38665: Magento SVC does not work for Magento 2.3.x when nikic/php-parser version is above 4.6.0

Author: zakdma

src/Visitor/ParentConnector.php

@@ -0,0 +1,53 @@
+<?php
+
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\SemanticVersionChecker\Visitor;
+
+use PhpParser\NodeVisitorAbstract;
+use PhpParser\Node;
+
+/**
+ * Create parent reference for nodes. Parent reference can be found in 'parent' node attribute.
+ * TODO: Replace this class with lib/PhpParser/NodeVisitor/ParentConnectingVisitor.php
+ * after updating nikic/PHP-Parser to v4.7.0
+ */
+class ParentConnector extends NodeVisitorAbstract
+{
+    /**
+     * Stack of nodes that used to create parent references
+     *
+     * @var array
+     */
+    private $stack;
+
+    /**
+     * @inheritDoc
+     */
+    public function beginTraverse(array $nodes)
+    {
+        $this->stack = [];
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function enterNode(Node $node)
+    {
+        if (!empty($this->stack)) {
+            $node->setAttribute('parent', $this->stack[count($this->stack) - 1]);
+        }
+        $this->stack[] = $node;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function leaveNode(Node $node)
+    {
+        array_pop($this->stack);
+    }
+}