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#pragma once 
 
#include "public.h" 
 
#include <util/generic/maybe.h> 
#include <util/generic/ptr.h> 
 
class IInputStream;
 
namespace NYT::NYson {
struct IYsonConsumer;
} // namespace NYT::NYson

namespace NYson {
    ////////////////////////////////////////////////////////////////////////////////
 
    class TYsonParser {
    public:
        TYsonParser(
            NYT::NYson::IYsonConsumer* consumer,
            IInputStream* stream,
            EYsonType type = ::NYson::EYsonType::Node,
            bool enableLinePositionInfo = false,
            TMaybe<ui64> memoryLimit = Nothing());
 
        ~TYsonParser();
 
        void Parse();
 
    private:
        class TImpl;
        THolder<TImpl> Impl;
    };
 
    ////////////////////////////////////////////////////////////////////////////////
 
    class TStatelessYsonParser {
    public:
        TStatelessYsonParser(
            NYT::NYson::IYsonConsumer* consumer,
            bool enableLinePositionInfo = false,
            TMaybe<ui64> memoryLimit = Nothing());
 
        ~TStatelessYsonParser();
 
        void Parse(const TStringBuf& data, EYsonType type = ::NYson::EYsonType::Node);
 
    private:
        class TImpl;
        THolder<TImpl> Impl;
    };
 
    ////////////////////////////////////////////////////////////////////////////////
 
    class TYsonListParser {
    public:
        TYsonListParser(
            NYT::NYson::IYsonConsumer* consumer,
            IInputStream* stream,
            bool enableLinePositionInfo = false,
            TMaybe<ui64> memoryLimit = Nothing());
 
        ~TYsonListParser();

        bool Parse(); // Returns false, if there is no more list items

    private:
        class TImpl;
        THolder<TImpl> Impl;
    };

    ////////////////////////////////////////////////////////////////////////////////

    void ParseYsonStringBuffer(
        const TStringBuf& buffer,
        NYT::NYson::IYsonConsumer* consumer,
        EYsonType type = ::NYson::EYsonType::Node,
        bool enableLinePositionInfo = false,
        TMaybe<ui64> memoryLimit = Nothing());

    ////////////////////////////////////////////////////////////////////////////////
 
} // namespace NYson