YT-19210: expose YQL shared library for YT.

After this, a new target libyqlplugin.so appears. in open-source cmake build.
Diff in open-source YDB repo looks like the following: https://paste.yandex-team.ru/f302bdb4-7ef2-4362-91c7-6ca45f329264

1 files changed, 106 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/interface/protobuf_format.h b/yt/cpp/mapreduce/interface/protobuf_format.h
new file mode 100644
index 0000000000..aafbced386
--- /dev/null
+++ b/yt/cpp/mapreduce/interface/protobuf_format.h
@@ -0,0 +1,106 @@
+#pragma once
+
+#include "common.h"
+
+#include <yt/yt_proto/yt/formats/extension.pb.h>
+
+#include <util/generic/maybe.h>
+
+#include <google/protobuf/message.h>
+
+/// @cond Doxygen_Suppress
+namespace NYT::NDetail {
+
+////////////////////////////////////////////////////////////////////////////////
+
+enum class EProtobufType
+{
+    EnumInt       /* "enum_int" */,
+    EnumString    /* "enum_string" */,
+    Any           /* "any" */,
+    OtherColumns  /* "other_columns" */,
+};
+
+enum class EProtobufSerializationMode
+{
+    Protobuf,
+    Yt,
+    Embedded,
+};
+
+enum class EProtobufListMode
+{
+    Optional,
+    Required,
+};
+
+enum class EProtobufMapMode
+{
+    ListOfStructsLegacy,
+    ListOfStructs,
+    Dict,
+    OptionalDict,
+};
+
+enum class EProtobufFieldSortOrder
+{
+    AsInProtoFile,
+    ByFieldNumber,
+};
+
+enum class EProtobufOneofMode
+{
+    SeparateFields,
+    Variant,
+};
+
+enum class EProtobufEnumWritingMode
+{
+    SkipUnknownValues,
+    CheckValues,
+};
+
+struct TProtobufOneofOptions
+{
+    EProtobufOneofMode Mode = EProtobufOneofMode::Variant;
+    TString VariantFieldName;
+};
+
+struct TProtobufFieldOptions
+{
+    TMaybe<EProtobufType> Type;
+    EProtobufSerializationMode SerializationMode = EProtobufSerializationMode::Protobuf;
+    EProtobufListMode ListMode = EProtobufListMode::Required;
+    EProtobufMapMode MapMode = EProtobufMapMode::ListOfStructsLegacy;
+};
+
+struct TProtobufMessageOptions
+{
+    EProtobufFieldSortOrder FieldSortOrder = EProtobufFieldSortOrder::ByFieldNumber;
+};
+
+TString GetColumnName(const ::google::protobuf::FieldDescriptor& field);
+
+TProtobufFieldOptions GetFieldOptions(
+    const ::google::protobuf::FieldDescriptor* fieldDescriptor,
+    const TMaybe<TProtobufFieldOptions>& defaultFieldOptions = {});
+
+TProtobufOneofOptions GetOneofOptions(
+    const ::google::protobuf::OneofDescriptor* oneofDescriptor,
+    const TMaybe<TProtobufOneofOptions>& defaultOneofOptions = {});
+
+TProtobufMessageOptions GetMessageOptions(const ::google::protobuf::Descriptor* descriptor);
+
+TMaybe<TVector<TString>> InferColumnFilter(const ::google::protobuf::Descriptor& descriptor);
+
+TNode MakeProtoFormatConfigWithTables(const TVector<const ::google::protobuf::Descriptor*>& descriptors);
+TNode MakeProtoFormatConfigWithDescriptors(const TVector<const ::google::protobuf::Descriptor*>& descriptors);
+
+TTableSchema CreateTableSchemaImpl(
+    const ::google::protobuf::Descriptor& messageDescriptor,
+    bool keepFieldsWithoutExtension);
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT::NDetail
+/// @endcond