Feb 15th 2023 update

external/graphqlparser/AstNode.h

@@ -0,0 +1,36 @@
+/**
+ * Copyright 2019-present, GraphQL Foundation
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include "location.hh"
+
+namespace facebook {
+namespace graphql {
+namespace ast {
+
+namespace visitor {
+class AstVisitor;
+}
+
+class Node {
+  yy::location location_;
+public:
+  explicit Node(const yy::location &location)
+    : location_(location) {}
+
+  virtual ~Node() {}
+
+  const yy::location &getLocation() const
+  { return location_; }
+
+  virtual void accept(visitor::AstVisitor *visitor) const = 0;
+};
+
+}
+}
+}