80534: SE-0217 Introducing the !! "Unwrap or Die" operator (partial, compiler work needed too)

Author: dwarfland

Source/Operators.swift

@@ -9,4 +9,18 @@
 	#elseif COCOA
 	__throw NSException(name: "Cannot force-unwrap reference", reason: "Cannot force-unwrap reference", userInfo: nil)
 	#endif
+}
+
+//
+//
+// CAUTION: Magic function name.
+// The compiler will use UnwrapOrDie<T> to provide the `!!` Unwrap-or-die operator (SE-0217)
+//
+//
+
+public func UnwrapOrDie<T>(_ val: T?, _ error: NativeString) -> T {
+	if let val = val {
+		return val
+	}
+	throw Exception(error)
 }