From 1538fa002fe7f2e3d126559b7fc062c86a24a37d Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Mon, 20 May 2024 16:41:01 +0300
Subject: [PATCH] Support util::function constructing from & assigning to
 nullptr

---
 libs/util/include/psemek/util/function.hpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/libs/util/include/psemek/util/function.hpp b/libs/util/include/psemek/util/function.hpp
index 42d4cc6b..4da1b449 100644
--- a/libs/util/include/psemek/util/function.hpp
+++ b/libs/util/include/psemek/util/function.hpp
@@ -43,11 +43,14 @@ namespace psemek::util
 
 		function() noexcept = default;
 
+		function(std::nullptr_t) noexcept;
+
 		template <typename F>
 		function(F && f);
 
 		function (function &&) noexcept;
 		function & operator = (function &&) noexcept;
+		function & operator = (std::nullptr_t) noexcept;
 
 		function (function &) = delete;
 		function (function const &) = delete;
@@ -99,6 +102,10 @@ namespace psemek::util
 		void assign(F && f);
 	};
 
+	template <typename R, typename ... Args>
+	function<R(Args...)>::function(std::nullptr_t) noexcept
+	{}
+
 	template <typename R, typename ... Args>
 	template <typename F>
 	function<R(Args...)>::function(F && f)
@@ -148,6 +155,13 @@ namespace psemek::util
 		return *this;
 	}
 
+	template <typename R, typename ... Args>
+	function<R(Args...)> & function<R(Args...)>::operator = (std::nullptr_t) noexcept
+	{
+		reset();
+		return *this;
+	}
+
 	template <typename R, typename ... Args>
 	function<R(Args...)>::~function()
 	{