From 7fe47a9d5b1727a61dc724523b530762f6d6ba19 Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Thu, 30 Jun 2022 21:38:53 -0700
Subject: Restructure project

---
 app/source/Cplt/Utils/ScopeGuard.hpp | 39 ++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 app/source/Cplt/Utils/ScopeGuard.hpp

(limited to 'app/source/Cplt/Utils/ScopeGuard.hpp')

diff --git a/app/source/Cplt/Utils/ScopeGuard.hpp b/app/source/Cplt/Utils/ScopeGuard.hpp
new file mode 100644
index 0000000..f2b7f46
--- /dev/null
+++ b/app/source/Cplt/Utils/ScopeGuard.hpp
@@ -0,0 +1,39 @@
+#pragma once
+
+#include <Cplt/Utils/Macros.hpp>
+
+#include <utility>
+
+template <class TCleanupFunc>
+class ScopeGuard
+{
+private:
+	TCleanupFunc mFunc;
+	bool mDismissed = false;
+
+public:
+	/// Specifically left this implicit so that constructs like
+	/// \code
+	/// ScopeGuard sg = [&]() { res.Cleanup(); };
+	/// \endcode
+	/// would work. It is highly discourage and unlikely that one would want to use ScopeGuard as a function
+	/// parameter, so the normal argument that implicit conversion are harmful doesn't really apply here.
+	ScopeGuard(TCleanupFunc func)
+		: mFunc{ std::move(func) }
+	{
+	}
+
+	~ScopeGuard()
+	{
+		if (!mDismissed) {
+			mFunc();
+		}
+	}
+
+	void Dismiss() noexcept
+	{
+		mDismissed = true;
+	}
+};
+
+#define DEFER ScopeGuard UNIQUE_NAME(scopeGuard) = [&]()
-- 
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