From dfe62dcf8bcefc523b466e127c3edc4dc2756629 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 6 Oct 2024 13:57:39 +0800
Subject: Rename common to base.

---
 include/cru/base/Guard.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 include/cru/base/Guard.h

(limited to 'include/cru/base/Guard.h')

diff --git a/include/cru/base/Guard.h b/include/cru/base/Guard.h
new file mode 100644
index 00000000..5a9f9c5d
--- /dev/null
+++ b/include/cru/base/Guard.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <functional>
+
+namespace cru {
+struct Guard {
+  using ExitFunc = std::function<void()>;
+
+  Guard() = default;
+  explicit Guard(const ExitFunc& f) : on_exit(f) {}
+  explicit Guard(ExitFunc&& f) : on_exit(std::move(f)) {}
+  Guard(const Guard&) = delete;
+  Guard(Guard&&) = default;
+  Guard& operator=(const Guard&) = delete;
+  Guard& operator=(Guard&&) = default;
+  ~Guard() {
+    if (on_exit) {
+      on_exit();
+    }
+  }
+
+  void Drop() { on_exit = {}; }
+
+  ExitFunc on_exit;
+};
+}  // namespace cru
-- 
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