From aa427cb5fe7564a85703f14f76f854419274decc Mon Sep 17 00:00:00 2001
From: Steven Le Rouzic <steven.lerouzic@gmail.com>
Date: Wed, 4 Sep 2024 00:11:04 +0200
Subject: Bleh

---
 asl/utility.hpp | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

(limited to 'asl/utility.hpp')

diff --git a/asl/utility.hpp b/asl/utility.hpp
index a94834d..6cbff8e 100644
--- a/asl/utility.hpp
+++ b/asl/utility.hpp
@@ -1,12 +1,20 @@
 #pragma once
 
-#ifndef __clang__
-    #error Not a valid environment
-#endif
+#include "asl/meta.hpp"
 
-#ifdef _MSC_VER
-    #define ASL_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]]
-#else
-    #define ASL_NO_UNIQUE_ADDRESS [[no_unique_address]]
-#endif
+#define ASL_MOVE(expr_) (static_cast<::asl::un_ref_t<decltype(expr_)>&&>(expr_))
 
+#define ASL_FWD(expr_) (static_cast<decltype(expr_)&&>(expr_))
+
+namespace asl
+{
+
+template<typename T, typename U>
+T exchange(T& obj, U&& new_value)
+{
+    T old_value = ASL_MOVE(obj);
+    obj = ASL_FORWARD(new_value);
+    return old_value;
+}
+
+} // namespace asl
-- 
cgit