From 5a0b3927a33807cca4c77c40eb873f8a3b51b0b0 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 29 Apr 2023 19:07:11 +0100
Subject: Drop .hpp for header only things

Half of them acquired a .cpp part anyway
---
 lib/ptr.h | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 lib/ptr.h

(limited to 'lib/ptr.h')

diff --git a/lib/ptr.h b/lib/ptr.h
new file mode 100644
index 0000000..b7d15a1
--- /dev/null
+++ b/lib/ptr.h
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <memory>
+#include <special_members.h>
+
+template<typename Obj, auto Destroy> class wrapped_ptr {
+public:
+	template<typename... Args, typename... Params>
+	explicit wrapped_ptr(Obj * (*factory)(Params...), Args &&... args) : obj {factory(std::forward<Args>(args)...)}
+	{
+	}
+
+	explicit wrapped_ptr(wrapped_ptr && p) : obj {p.obj}
+	{
+		p.obj = nullptr;
+	}
+
+	~wrapped_ptr()
+	{
+		if (obj) {
+			Destroy(obj);
+		}
+	}
+
+	NO_COPY(wrapped_ptr);
+
+	wrapped_ptr &
+	operator=(wrapped_ptr && p)
+	{
+		if (obj) {
+			Destroy(obj);
+		}
+		obj = p.obj;
+		p.obj = nullptr;
+		return *this;
+	}
+
+	[[nodiscard]] inline
+	operator Obj *() const noexcept
+	{
+		return obj;
+	}
+
+	[[nodiscard]] inline auto
+	operator->() const noexcept
+	{
+		return obj;
+	}
+
+	[[nodiscard]] inline auto
+	get() const noexcept
+	{
+		return obj;
+	}
+
+protected:
+	explicit wrapped_ptr(Obj * o) : obj {o} { }
+	Obj * obj;
+};
+
+template<typename Obj, auto Create, auto Destroy> class wrapped_ptrt : public wrapped_ptr<Obj, Destroy> {
+public:
+	template<typename... Args>
+	explicit wrapped_ptrt(Args &&... args) : wrapped_ptr<Obj, Destroy> {Create(std::forward<Args>(args)...)}
+	{
+	}
+};
-- 
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