Macro support for unpacking weak pointers.

src/Assert.hpp

@@ -17,4 +17,7 @@
 #define Assert(expr) ;
 #endif
 
-#define AssertNotNull(value) Assert(value != nullptr)
+#define AssertNotNull(value) Assert(value != nullptr)
+#define UnpackWeakPtr(weakPtr, sharedPtr)                                                                              \
+    Assert(!weakPtr.expired());                                                                                        \
+    auto sharedPtr = weakPtr.lock();