interpreter_tree first iteration

include/global_info.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <string>
+#include <unordered_map>
+
+// for clangd
+#include "symbols_info.hpp"
+
+namespace info {
+
+class GlobalInfo {
+public:
+  GlobalInfo();
+
+  // ?? EnterNamespace / ExitNamespace ??
+  // concurrent work ??
+  // AddType, AddFunction
+  // TODO
+private:
+  std::unordered_map<std::string, NamespaceInfo> namespaces_;
+  NamespaceInfo global_namespace_;
+  // lock for concurrency ??
+};
+
+} // namespace info