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#pragma once
#include "counting_raw_reader.h"
#include <yt/cpp/mapreduce/interface/io.h>
#include <library/cpp/yson/public.h>
#include <util/stream/input.h>
#include <util/generic/buffer.h>
#include <util/system/event.h>
#include <util/system/thread.h>
#include <atomic>
namespace NYT {
class TRawTableReader;
class TRowBuilder;
////////////////////////////////////////////////////////////////////////////////
struct TRowElement
{
TNode Node;
size_t Size = 0;
void Reset()
{
Node = TNode();
Size = 0;
}
};
////////////////////////////////////////////////////////////////////////////////
class TNodeTableReader
: public INodeReaderImpl
{
public:
explicit TNodeTableReader(::TIntrusivePtr<TRawTableReader> input);
~TNodeTableReader() override;
const TNode& GetRow() const override;
void MoveRow(TNode* result) override;
bool IsValid() const override;
void Next() override;
ui32 GetTableIndex() const override;
ui32 GetRangeIndex() const override;
ui64 GetRowIndex() const override;
i64 GetTabletIndex() const override;
void NextKey() override;
TMaybe<size_t> GetReadByteCount() const override;
bool IsEndOfStream() const override;
bool IsRawReaderExhausted() const override;
private:
void NextImpl();
void OnStreamError(std::exception_ptr exception, TString error);
void CheckValidity() const;
void PrepareParsing();
void ParseListFragmentItem();
void ParseFirstListFragmentItem();
private:
NDetail::TCountingRawTableReader Input_;
bool Valid_ = true;
bool Finished_ = false;
ui32 TableIndex_ = 0;
TMaybe<ui64> RowIndex_;
TMaybe<ui32> RangeIndex_;
TMaybe<i64> TabletIndex_;
bool IsEndOfStream_ = false;
bool AtStart_ = true;
TMaybe<TRowElement> Row_;
TMaybe<TRowElement> NextRow_;
THolder<TRowBuilder> Builder_;
THolder<::NYson::TYsonListParser> Parser_;
std::exception_ptr Exception_;
bool NeedParseFirst_ = true;
bool IsLast_ = false;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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