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#pragma once

#include "config.h"
#include "json_output.h"

#include <google/protobuf/descriptor.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/message.h>

#include <util/generic/fwd.h>
#include <util/generic/vector.h>
#include <util/generic/yexception.h>
#include <util/stream/str.h>

#include <functional>

namespace NJson {
    class TJsonValue; 
    class TJsonWriter; 
} 

class IOutputStream;
class TStringStream;

namespace NProtobufJson {
    void Proto2Json(const NProtoBuf::Message& proto, IJsonOutput& jsonOutput, 
                    const TProto2JsonConfig& config = TProto2JsonConfig(), bool closeMap = true); 

    void Proto2Json(const NProtoBuf::Message& proto, NJson::TJsonWriter& writer, 
                    const TProto2JsonConfig& config = TProto2JsonConfig()); 

    /// @throw yexception 
    void Proto2Json(const NProtoBuf::Message& proto, NJson::TJsonValue& json, 
                    const TProto2JsonConfig& config = TProto2JsonConfig()); 

    /// @throw yexception 
    void Proto2Json(const NProtoBuf::Message& proto, IOutputStream& out, 
                    const TProto2JsonConfig& config); 
    // Generated code shortcut 
    template <class T> 
    inline void Proto2Json(const T& proto, IOutputStream& out) { 
        out << proto.AsJSON(); 
    } 

    // TStringStream deserves a special overload as its operator TString() would cause ambiguity 
    /// @throw yexception 
    void Proto2Json(const NProtoBuf::Message& proto, TStringStream& out, 
                    const TProto2JsonConfig& config); 
    // Generated code shortcut 
    template <class T> 
    inline void Proto2Json(const T& proto, TStringStream& out) { 
        out << proto.AsJSON(); 
    } 

    /// @throw yexception 
    void Proto2Json(const NProtoBuf::Message& proto, TString& str, 
                    const TProto2JsonConfig& config); 
    // Generated code shortcut 
    template <class T> 
    inline void Proto2Json(const T& proto, TString& str) { 
        str.clear(); 
        TStringOutput out(str); 
        out << proto.AsJSON(); 
    } 

    /// @throw yexception 
    TString Proto2Json(const NProtoBuf::Message& proto, 
                       const TProto2JsonConfig& config); 
    // Returns incorrect result if proto contains another NProtoBuf::Message
    // Generated code shortcut 
    template <class T> 
    inline TString Proto2Json(const T& proto) { 
        TString result; 
        Proto2Json(proto, result); 
        return result; 
    } 

}