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#pragma once
#include <yql/essentials/types/binary_json/read.h>
#include <yql/essentials/public/udf/udf_value.h>
#include <util/generic/maybe.h>
#include <variant>
namespace NYql::NJsonPath {
enum class EValueType {
Bool = 0,
Number = 1,
String = 2,
Null = 4,
Object = 5,
Array = 6,
};
struct TEmptyMarker {
};
class TValue;
class TArrayIterator {
public:
TArrayIterator();
explicit TArrayIterator(const NUdf::TUnboxedValue& iterator);
explicit TArrayIterator(NUdf::TUnboxedValue&& iterator);
explicit TArrayIterator(const NKikimr::NBinaryJson::TArrayIterator& iterator);
explicit TArrayIterator(NKikimr::NBinaryJson::TArrayIterator&& iterator);
bool Next(TValue& value);
private:
std::variant<TEmptyMarker, NUdf::TUnboxedValue, NKikimr::NBinaryJson::TArrayIterator> Iterator;
};
class TObjectIterator {
public:
TObjectIterator();
explicit TObjectIterator(const NUdf::TUnboxedValue& iterator);
explicit TObjectIterator(NUdf::TUnboxedValue&& iterator);
explicit TObjectIterator(const NKikimr::NBinaryJson::TObjectIterator& iterator);
explicit TObjectIterator(NKikimr::NBinaryJson::TObjectIterator&& iterator);
bool Next(TValue& key, TValue& value);
private:
std::variant<TEmptyMarker, NUdf::TUnboxedValue, NKikimr::NBinaryJson::TObjectIterator> Iterator;
};
class TValue {
public:
TValue();
explicit TValue(const NUdf::TUnboxedValue& value);
explicit TValue(NUdf::TUnboxedValue&& value);
explicit TValue(const NKikimr::NBinaryJson::TEntryCursor& value);
explicit TValue(NKikimr::NBinaryJson::TEntryCursor&& value);
explicit TValue(const NKikimr::NBinaryJson::TContainerCursor& value);
explicit TValue(NKikimr::NBinaryJson::TContainerCursor&& value);
EValueType GetType() const;
bool Is(EValueType type) const;
bool IsBool() const;
bool IsNumber() const;
bool IsString() const;
bool IsNull() const;
bool IsObject() const;
bool IsArray() const;
// Scalar value methods
double GetNumber() const;
bool GetBool() const;
const TStringBuf GetString() const;
ui32 GetSize() const;
// Array methods
TValue GetElement(ui32 index) const;
TArrayIterator GetArrayIterator() const;
// Object methods
TMaybe<TValue> Lookup(const TStringBuf key) const;
TObjectIterator GetObjectIterator() const;
NUdf::TUnboxedValue ConvertToUnboxedValue(const NUdf::IValueBuilder* valueBuilder) const;
private:
void UnpackInnerValue();
std::variant<NUdf::TUnboxedValue, NKikimr::NBinaryJson::TEntryCursor, NKikimr::NBinaryJson::TContainerCursor> Value;
};
}
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