[+] C#-like using with RAII semantics. Use: AU_USING(pPointer/ref, MethodName)

Include/auROXTL/AU_MACROS.hpp

@@ -289,3 +289,5 @@ struct AuStringOwnedException : AuStringException
 #define AU_EMIT_FIRST_COMMA_OTHERS(n),n
 
 #include "Objects/Objects.hpp"
+
+#include "AU_USING.hpp"

Include/auROXTL/AU_USING.hpp

@@ -0,0 +1,39 @@
+/***
+    Copyright (C) 2024 Jamie Reece Wilson (a/k/a "Reece"). All rights reserved.
+
+    File: AU_USING.hpp
+    Date: 2024-07-30
+    Author: Reece
+***/
+#pragma once
+
+namespace __audetail
+{
+    template <typename T_t>
+    struct __au_using
+    {
+        T_t *pThat;
+        using CB_t = void (T_t:: *)();
+        CB_t cb;
+
+        __au_using(T_t &that, CB_t cb) :
+            cb(cb),
+            pThat(&that)
+        { }
+
+        __au_using(T_t *that, CB_t cb) :
+            cb(cb),
+            pThat(that)
+        { }
+
+        ~__au_using()
+        {
+            ((pThat)->*(cb))();
+        }
+    };
+}
+
+#define AU_USING(pPointer, method)                                                                                             \
+    __audetail::__au_using<AuRemovePointer_t<AuRemoveReference_t<decltype(*pPointer)>>> AU_CONCAT(__stack_using, __COUNTER__)( \
+        pPointer,                                                                                                              \
+        &AuRemovePointer_t<AuRemoveReference_t<decltype(*pPointer)>>::method);