From c8eaf4abe03dedf7134cb62b7b2d56c0f508f5c5 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Wed, 25 May 2022 22:54:14 +0300
Subject: [PATCH] Add util::dynamic_ptr with stream output operator that shows
 dynamic type of referenced object

---
 libs/util/include/psemek/util/type_name.hpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/libs/util/include/psemek/util/type_name.hpp b/libs/util/include/psemek/util/type_name.hpp
index cf91ff64..8b8a5ffe 100644
--- a/libs/util/include/psemek/util/type_name.hpp
+++ b/libs/util/include/psemek/util/type_name.hpp
@@ -21,4 +21,19 @@ namespace psemek::util
 		return type_name(typeid(x));
 	}
 
+	template <typename T>
+	struct dynamic_ptr
+	{
+		T * ptr;
+	};
+
+	template <typename OStream, typename T>
+	auto & operator << (OStream & os, dynamic_ptr<T> const & d)
+	{
+		if (!d.ptr)
+			return os << d.ptr;
+		else
+			return os << "<" << type_name(*d.ptr) << " " << d.ptr << ">";
+	}
+
 }