1 files changed, 21 insertions, 0 deletions
diff --git a/compat/is-complete.hpp b/compat/is-complete.hpp
new file mode 100644
index 00000000..d6bba88b
--- /dev/null
+++ b/compat/is-complete.hpp
@@ -0,0 +1,21 @@
+#pragma once
+
+namespace floormat::detail_type_traits {
+
+namespace { template<class T> class IsComplete_ {
+    // from <Corrade/Containers/Pointer.h>
+    template<class U> static char get(U*, decltype(sizeof(U))* = nullptr);
+    static short get(...);
+    public:
+        enum: bool { value = sizeof(get(static_cast<T*>(nullptr))) == sizeof(char) };
+}; } // namespace
+
+} // namespace floormat::detail_type_traits
+
+namespace floormat {
+
+template<typename T>
+constexpr inline bool is_complete =
+    bool(::floormat::detail_type_traits::IsComplete_<T>::value);
+
+} // namespace floormat