Revert "YT-19324: move YT provider to ydb/library/yql"

This reverts commit ca272f12fdd0e8d5c3e957fc87939148f1caaf72, reversing
changes made to 49f8acfc8b0b5c0071b804423bcf53fda26c7c12.

1 files changed, 0 insertions, 198 deletions

diff --git a/yt/cpp/mapreduce/io/lenval_table_reader.cpp b/yt/cpp/mapreduce/io/lenval_table_reader.cpp
deleted file mode 100644
index 98274c79960..00000000000
--- a/yt/cpp/mapreduce/io/lenval_table_reader.cpp
+++ /dev/null
@@ -1,198 +0,0 @@
-#include "lenval_table_reader.h"
-
-#include <yt/cpp/mapreduce/common/helpers.h>
-
-#include <yt/cpp/mapreduce/interface/logging/yt_log.h>
-
-#include <util/string/printf.h>
-
-namespace NYT {
-
-////////////////////////////////////////////////////////////////////////////////
-
-const i32 CONTROL_ATTR_TABLE_INDEX   = -1;
-const i32 CONTROL_ATTR_KEY_SWITCH    = -2;
-const i32 CONTROL_ATTR_RANGE_INDEX   = -3;
-const i32 CONTROL_ATTR_ROW_INDEX     = -4;
-const i32 CONTROL_ATTR_END_OF_STREAM = -5;
-const i32 CONTROL_ATTR_TABLET_INDEX  = -6;
-
-////////////////////////////////////////////////////////////////////////////////
-
-TLenvalTableReader::TLenvalTableReader(::TIntrusivePtr<TRawTableReader> input)
-    : Input_(std::move(input))
-{
-    TLenvalTableReader::Next();
-}
-
-TLenvalTableReader::~TLenvalTableReader()
-{ }
-
-void TLenvalTableReader::CheckValidity() const
-{
-    if (!IsValid()) {
-        ythrow yexception() << "Iterator is not valid";
-    }
-}
-
-bool TLenvalTableReader::IsValid() const
-{
-    return Valid_;
-}
-
-void TLenvalTableReader::Next()
-{
-    if (!RowTaken_) {
-        SkipRow();
-    }
-
-    CheckValidity();
-
-    if (RowIndex_) {
-        ++*RowIndex_;
-    }
-
-    while (true) {
-        try {
-            i32 value = 0;
-            if (!ReadInteger(&value, true)) {
-                return;
-            }
-
-            while (value < 0 && !IsEndOfStream_) {
-                switch (value) {
-                    case CONTROL_ATTR_KEY_SWITCH:
-                        if (!AtStart_) {
-                            Valid_ = false;
-                            return;
-                        } else {
-                            ReadInteger(&value);
-                        }
-                        break;
-
-                    case CONTROL_ATTR_TABLE_INDEX: {
-                        ui32 tmp = 0;
-                        ReadInteger(&tmp);
-                        TableIndex_ = tmp;
-                        ReadInteger(&value);
-                        break;
-                    }
-                    case CONTROL_ATTR_ROW_INDEX: {
-                        ui64 tmp = 0;
-                        ReadInteger(&tmp);
-                        RowIndex_ = tmp;
-                        ReadInteger(&value);
-                        break;
-                    }
-                    case CONTROL_ATTR_RANGE_INDEX: {
-                        ui32 tmp = 0;
-                        ReadInteger(&tmp);
-                        RangeIndex_ = tmp;
-                        ReadInteger(&value);
-                        break;
-                    }
-                    case CONTROL_ATTR_TABLET_INDEX: {
-                        ui64 tmp = 0;
-                        ReadInteger(&tmp);
-                        TabletIndex_ = tmp;
-                        ReadInteger(&value);
-                        break;
-                    }
-                    case CONTROL_ATTR_END_OF_STREAM: {
-                        IsEndOfStream_ = true;
-                        break;
-                    }
-                    default:
-                        ythrow yexception() <<
-                            Sprintf("Invalid control integer %d in lenval stream", value);
-                }
-            }
-
-            Length_ = static_cast<ui32>(value);
-            RowTaken_ = false;
-            AtStart_ = false;
-        } catch (const std::exception& e) {
-            if (!PrepareRetry()) {
-                throw;
-            }
-            continue;
-        }
-        break;
-    }
-}
-
-bool TLenvalTableReader::Retry()
-{
-    if (PrepareRetry()) {
-        RowTaken_ = true;
-        Next();
-        return true;
-    }
-    return false;
-}
-
-void TLenvalTableReader::NextKey()
-{
-    while (Valid_) {
-        Next();
-    }
-
-    if (Finished_) {
-        return;
-    }
-
-    Valid_ = true;
-
-    if (RowIndex_) {
-        --*RowIndex_;
-    }
-
-    RowTaken_ = true;
-}
-
-ui32 TLenvalTableReader::GetTableIndex() const
-{
-    CheckValidity();
-    return TableIndex_;
-}
-
-ui32 TLenvalTableReader::GetRangeIndex() const
-{
-    CheckValidity();
-    return RangeIndex_.GetOrElse(0);
-}
-
-ui64 TLenvalTableReader::GetRowIndex() const
-{
-    CheckValidity();
-    return RowIndex_.GetOrElse(0UL);
-}
-
-TMaybe<size_t> TLenvalTableReader::GetReadByteCount() const
-{
-    return Input_.GetReadByteCount();
-}
-
-bool TLenvalTableReader::IsEndOfStream() const
-{
-    return IsEndOfStream_;
-}
-
-bool TLenvalTableReader::IsRawReaderExhausted() const
-{
-    return Finished_;
-}
-
-bool TLenvalTableReader::PrepareRetry()
-{
-    if (Input_.Retry(RangeIndex_, RowIndex_)) {
-        RowIndex_.Clear();
-        RangeIndex_.Clear();
-        return true;
-    }
-    return false;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-
-} // namespace NYT