Add NullLog.h.

td/telegram/Logging.cpp

@@ -32,6 +32,7 @@
 #include "td/utils/algorithm.h"
 #include "td/utils/ExitGuard.h"
 #include "td/utils/FileLog.h"
+#include "td/utils/NullLog.h"
 #include "td/utils/logging.h"
 #include "td/utils/misc.h"
 #include "td/utils/port/detail/NativeFd.h"

td/telegram/cli.cpp

@@ -30,6 +30,7 @@
 #include "td/utils/JsonBuilder.h"
 #include "td/utils/logging.h"
 #include "td/utils/misc.h"
+#include "td/utils/NullLog.h"
 #include "td/utils/OptionParser.h"
 #include "td/utils/port/FileFd.h"
 #include "td/utils/port/PollFlags.h"

tdutils/CMakeLists.txt

@@ -221,6 +221,7 @@ set(TDUTILS_SOURCE
   td/utils/MpscPollableQueue.h
   td/utils/MpscLinkQueue.h
   td/utils/Named.h
+  td/utils/NullLog.h
   td/utils/ObjectPool.h
   td/utils/Observer.h
   td/utils/optional.h

tdutils/td/utils/NullLog.h

@@ -0,0 +1,19 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/utils/logging.h"
+#include "td/utils/Slice.h"
+
+namespace td {
+
+class NullLog : public LogInterface {
+  void do_append(int /*log_level*/, CSlice /*slice*/) final {
+  }
+};
+
+}  // namespace td

tdutils/td/utils/logging.h

@@ -177,11 +177,6 @@ class LogInterface {
   virtual void do_append(int log_level, CSlice slice) = 0;
 };
 
-class NullLog : public LogInterface {
-  void do_append(int /*log_level*/, CSlice /*slice*/) final {
-  }
-};
-
 extern LogInterface *const default_log_interface;
 extern LogInterface *log_interface;
 

tdutils/test/log.cpp

@@ -10,6 +10,7 @@
 #include "td/utils/format.h"
 #include "td/utils/logging.h"
 #include "td/utils/MemoryLog.h"
+#include "td/utils/NullLog.h"
 #include "td/utils/port/path.h"
 #include "td/utils/port/thread.h"
 #include "td/utils/Slice.h"