YQ Connector: support managed ClickHouse

Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.

1 files changed, 87 insertions, 0 deletions

diff --git a/contrib/libs/llvm14/include/llvm/ADT/STLFunctionalExtras.h b/contrib/libs/llvm14/include/llvm/ADT/STLFunctionalExtras.h
new file mode 100644
index 0000000000..2ac0accaeb
--- /dev/null
+++ b/contrib/libs/llvm14/include/llvm/ADT/STLFunctionalExtras.h
@@ -0,0 +1,87 @@
+#pragma once
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
+
+//===- llvm/ADT/STLFunctionalExtras.h - Extras for <functional> -*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains some extension to <functional>.
+//
+// No library is required when using these functions.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ADT_STLFUNCTIONALEXTRAS_H
+#define LLVM_ADT_STLFUNCTIONALEXTRAS_H
+
+#include "llvm/ADT/STLForwardCompat.h"
+
+#include <type_traits>
+#include <utility>
+#include <cstdint>
+
+namespace llvm {
+
+//===----------------------------------------------------------------------===//
+//     Extra additions to <functional>
+//===----------------------------------------------------------------------===//
+
+/// An efficient, type-erasing, non-owning reference to a callable. This is
+/// intended for use as the type of a function parameter that is not used
+/// after the function in question returns.
+///
+/// This class does not own the callable, so it is not in general safe to store
+/// a function_ref.
+template<typename Fn> class function_ref;
+
+template<typename Ret, typename ...Params>
+class function_ref<Ret(Params...)> {
+  Ret (*callback)(intptr_t callable, Params ...params) = nullptr;
+  intptr_t callable;
+
+  template<typename Callable>
+  static Ret callback_fn(intptr_t callable, Params ...params) {
+    return (*reinterpret_cast<Callable*>(callable))(
+        std::forward<Params>(params)...);
+  }
+
+public:
+  function_ref() = default;
+  function_ref(std::nullptr_t) {}
+
+  template <typename Callable>
+  function_ref(
+      Callable &&callable,
+      // This is not the copy-constructor.
+      std::enable_if_t<!std::is_same<remove_cvref_t<Callable>,
+                                     function_ref>::value> * = nullptr,
+      // Functor must be callable and return a suitable type.
+      std::enable_if_t<std::is_void<Ret>::value ||
+                       std::is_convertible<decltype(std::declval<Callable>()(
+                                               std::declval<Params>()...)),
+                                           Ret>::value> * = nullptr)
+      : callback(callback_fn<typename std::remove_reference<Callable>::type>),
+        callable(reinterpret_cast<intptr_t>(&callable)) {}
+
+  Ret operator()(Params ...params) const {
+    return callback(callable, std::forward<Params>(params)...);
+  }
+
+  explicit operator bool() const { return callback; }
+};
+
+} // end namespace llvm
+
+#endif // LLVM_ADT_STLFUNCTIONALEXTRAS_H
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif