update ceph source to reef 18.1.2

[ceph.git] / ceph / src / rocksdb / third-party / folly / folly / functional / Invoke.h

diff --git a/ceph/src/rocksdb/third-party/folly/folly/functional/Invoke.h b/ceph/src/rocksdb/third-party/folly/folly/functional/Invoke.h
deleted file mode 100644 (file)
index 67c5528..0000000
--- a/ceph/src/rocksdb/third-party/folly/folly/functional/Invoke.h
+++ /dev/null
@@ -1,40 +0,0 @@
-//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
-//  This source code is licensed under both the GPLv2 (found in the
-//  COPYING file in the root directory) and Apache 2.0 License
-//  (found in the LICENSE.Apache file in the root directory).
-
-#pragma once
-
-#include <folly/Traits.h>
-
-#include <functional>
-#include <type_traits>
-
-namespace folly {
-namespace invoke_detail {
-template <typename F, typename... Args>
-using invoke_result_ = decltype(std::declval<F>()(std::declval<Args>()...));
-
-template <typename Void, typename F, typename... Args>
-struct is_invocable : std::false_type {};
-
-template <typename F, typename... Args>
-struct is_invocable<void_t<invoke_result_<F, Args...>>, F, Args...>
-    : std::true_type {};
-
-template <typename Void, typename R, typename F, typename... Args>
-struct is_invocable_r : std::false_type {};
-
-template <typename R, typename F, typename... Args>
-struct is_invocable_r<void_t<invoke_result_<F, Args...>>, R, F, Args...>
-    : std::is_convertible<invoke_result_<F, Args...>, R> {};
-} // namespace invoke_detail
-
-//  mimic: std::is_invocable, C++17
-template <typename F, typename... Args>
-struct is_invocable : invoke_detail::is_invocable<void, F, Args...> {};
-
-//  mimic: std::is_invocable_r, C++17
-template <typename R, typename F, typename... Args>
-struct is_invocable_r : invoke_detail::is_invocable_r<void, R, F, Args...> {};
-} // namespace folly