intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 100 insertions, 0 deletions

diff --git a/util/stream/fwd.h b/util/stream/fwd.h
new file mode 100644
index 0000000000..307676c6a7
--- /dev/null
+++ b/util/stream/fwd.h
@@ -0,0 +1,100 @@
+#pragma once
+
+#include <util/system/types.h>
+
+class IInputStream;
+class IOutputStream;
+
+class IZeroCopyInput;
+class IZeroCopyInputFastReadTo;
+class IZeroCopyOutput;
+
+using TStreamManipulator = void (*)(IOutputStream&);
+
+class TLengthLimitedInput;
+class TCountingInput;
+class TCountingOutput;
+
+class TMemoryInput;
+class TMemoryOutput;
+class TMemoryWriteBuffer;
+
+class TMultiInput;
+
+class TNullInput;
+class TNullOutput;
+class TNullIO;
+
+class TPipeBase;
+class TPipeInput;
+class TPipeOutput;
+class TPipedBase;
+class TPipedInput;
+class TPipedOutput;
+
+class TStringInput;
+class TStringOutput;
+class TStringStream;
+
+class TTeeOutput;
+
+class TTempBufOutput;
+
+struct TEol;
+
+template <typename TEndOfToken>
+class TStreamTokenizer;
+
+enum ETraceLevel: ui8;
+
+class IWalkInput;
+
+struct TZLibError;
+struct TZLibCompressorError;
+struct TZLibDecompressorError;
+
+namespace ZLib {
+    enum StreamType: ui8;
+}
+
+class TZLibDecompress;
+class TZLibCompress;
+class TBufferedZLibDecompress;
+
+using TZDecompress = TBufferedZLibDecompress;
+
+class TAlignedInput;
+class TAlignedOutput;
+
+class TBufferInput;
+class TBufferOutput;
+class TBufferStream;
+
+class TBufferedInput;
+class TBufferedOutputBase;
+class TBufferedOutput;
+class TAdaptiveBufferedOutput;
+
+template <class TSlave>
+class TBuffered;
+
+template <class TSlave>
+class TAdaptivelyBuffered;
+
+class TDebugOutput;
+
+class TRandomAccessFileInput;
+class TRandomAccessFileOutput;
+class TBufferedFileOutputEx;
+
+class TUnbufferedFileInput;
+class TMappedFileInput;
+class TUnbufferedFileOutput;
+
+class TFileInput;
+using TIFStream = TFileInput;
+
+class TFixedBufferFileOutput;
+using TOFStream = TFixedBufferFileOutput;
+
+using TFileOutput = TAdaptivelyBuffered<TUnbufferedFileOutput>;