basic_any: a utility for defining type-erasing wrappers in terms of…

… an interface description (#2633) --------- Co-authored-by: Michael Schellenberger Costa <[email protected]>
NVIDIA · Dec 5, 2024 · e0cf709 · e0cf709
1 parent bca6231
commit e0cf709
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Showing 26 changed files with 4,748 additions and 3 deletions.
diff --git a/cudax/include/cuda/experimental/__detail/config.cuh b/cudax/include/cuda/experimental/__detail/config.cuh
@@ -61,6 +61,7 @@
 
 namespace cuda::experimental
 {
+namespace __cudax = ::cuda::experimental; // NOLINT: misc-unused-alias-decls
 }
 
 #endif // __CUDAX__DETAIL_CONFIG_CUH
diff --git a/cudax/include/cuda/experimental/__detail/utility.cuh b/cudax/include/cuda/experimental/__detail/utility.cuh
@@ -11,7 +11,7 @@
 #ifndef __CUDAX_DETAIL_UTILITY_H
 #define __CUDAX_DETAIL_UTILITY_H
 
-#include <cuda/__cccl_config>
+#include <cuda/std/detail/__config>
 
 #if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
 #  pragma GCC system_header
@@ -21,6 +21,8 @@
 #  pragma system_header
 #endif // no system header
 
+#include <cuda/std/__utility/declval.h>
+
 namespace cuda::experimental
 {
 namespace detail
@@ -30,8 +32,8 @@ struct [[maybe_unused]] __ignore
 {
   __ignore() = default;
 
-  template <typename _Arg>
-  _CCCL_HOST_DEVICE constexpr __ignore(_Arg&&) noexcept
+  template <typename... _Args>
+  _CCCL_HOST_DEVICE constexpr __ignore(_Args&&...) noexcept
   {}
 };
 
@@ -42,8 +44,24 @@ struct __immovable
   __immovable(__immovable&&)            = delete;
   __immovable& operator=(__immovable&&) = delete;
 };
+
+template <class... _Types>
+struct _LIBCUDACXX_DECLSPEC_EMPTY_BASES __inherit : _Types...
+{};
+
+template <class _Type, template <class...> class _Template>
+inline constexpr bool __is_specialization_of = false;
+
+template <template <class...> class _Template, class... _Args>
+inline constexpr bool __is_specialization_of<_Template<_Args...>, _Template> = true;
+
 } // namespace detail
 
+template <class _Tp>
+using __identity_t _CCCL_NODEBUG_ALIAS = _Tp;
+
+using _CUDA_VSTD::declval;
+
 struct uninit_t
 {
   explicit uninit_t() = default;