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#pragma once
#include <library/cpp/json/common/defs.h>
#include <util/generic/string.h>
#include <util/generic/hash.h>
#include <util/generic/vector.h>
#include <util/generic/deque.h>
#include <util/generic/utility.h>
#include <util/generic/yexception.h>
namespace NJson {
enum EJsonValueType {
JSON_UNDEFINED /* "Undefined" */,
JSON_NULL /* "Null" */,
JSON_BOOLEAN /* "Boolean" */,
JSON_INTEGER /* "Integer" */,
JSON_DOUBLE /* "Double" */,
JSON_STRING /* "String" */,
JSON_MAP /* "Map" */,
JSON_ARRAY /* "Array" */,
JSON_UINTEGER /* "UInteger" */
};
class TJsonValue;
class IScanCallback {
public:
virtual ~IScanCallback() = default;
virtual bool Do(const TString& path, TJsonValue* parent, TJsonValue& value) = 0;
};
class TJsonValue {
void Clear() noexcept;
public:
typedef THashMap<TString, TJsonValue> TMapType;
typedef TDeque<TJsonValue> TArray;
TJsonValue() noexcept = default;
TJsonValue(EJsonValueType type);
TJsonValue(bool value) noexcept;
TJsonValue(int value) noexcept;
TJsonValue(unsigned int value) noexcept;
TJsonValue(long value) noexcept;
TJsonValue(unsigned long value) noexcept;
TJsonValue(long long value) noexcept;
TJsonValue(unsigned long long value) noexcept;
TJsonValue(double value) noexcept;
TJsonValue(TString value);
TJsonValue(const char* value);
template <class T>
TJsonValue(const T*) = delete;
TJsonValue(TStringBuf value);
TJsonValue(const std::string& s)
: TJsonValue(TStringBuf(s))
{
}
TJsonValue(const TJsonValue& vval);
TJsonValue(TJsonValue&& vval) noexcept;
TJsonValue& operator=(const TJsonValue& val);
TJsonValue& operator=(TJsonValue&& val) noexcept;
~TJsonValue() {
Clear();
}
EJsonValueType GetType() const noexcept;
TJsonValue& SetType(EJsonValueType type);
TJsonValue& SetValue(const TJsonValue& value);
TJsonValue& SetValue(TJsonValue&& value);
// for Map
TJsonValue& InsertValue(const TString& key, const TJsonValue& value);
TJsonValue& InsertValue(TStringBuf key, const TJsonValue& value);
TJsonValue& InsertValue(const char* key, const TJsonValue& value);
TJsonValue& InsertValue(const TString& key, TJsonValue&& value);
TJsonValue& InsertValue(TStringBuf key, TJsonValue&& value);
TJsonValue& InsertValue(const char* key, TJsonValue&& value);
// for Array
TJsonValue& AppendValue(const TJsonValue& value);
TJsonValue& AppendValue(TJsonValue&& value);
TJsonValue& Back();
const TJsonValue& Back() const;
bool GetValueByPath(TStringBuf path, TJsonValue& result, char delimiter = '.') const;
bool SetValueByPath(TStringBuf path, const TJsonValue& value, char delimiter = '.');
bool SetValueByPath(TStringBuf path, TJsonValue&& value, char delimiter = '.');
// returns NULL on failure
const TJsonValue* GetValueByPath(TStringBuf path, char delimiter = '.') const noexcept;
TJsonValue* GetValueByPath(TStringBuf path, char delimiter = '.') noexcept;
void EraseValue(TStringBuf key);
void EraseValue(size_t index);
TJsonValue& operator[](size_t idx);
TJsonValue& operator[](const TStringBuf& key);
const TJsonValue& operator[](size_t idx) const noexcept;
const TJsonValue& operator[](const TStringBuf& key) const noexcept;
bool GetBoolean() const;
long long GetInteger() const;
unsigned long long GetUInteger() const;
double GetDouble() const;
const TString& GetString() const;
const TMapType& GetMap() const;
const TArray& GetArray() const;
//throwing TJsonException possible
bool GetBooleanSafe() const;
long long GetIntegerSafe() const;
unsigned long long GetUIntegerSafe() const;
double GetDoubleSafe() const;
const TString& GetStringSafe() const;
const TMapType& GetMapSafe() const;
TMapType& GetMapSafe();
const TArray& GetArraySafe() const;
TArray& GetArraySafe();
bool GetBooleanSafe(bool defaultValue) const;
long long GetIntegerSafe(long long defaultValue) const;
unsigned long long GetUIntegerSafe(unsigned long long defaultValue) const;
double GetDoubleSafe(double defaultValue) const;
TString GetStringSafe(const TString& defaultValue) const;
bool GetBooleanRobust() const noexcept;
long long GetIntegerRobust() const noexcept;
unsigned long long GetUIntegerRobust() const noexcept;
double GetDoubleRobust() const noexcept;
TString GetStringRobust() const;
// Exception-free accessors
bool GetBoolean(bool* value) const noexcept;
bool GetInteger(long long* value) const noexcept;
bool GetUInteger(unsigned long long* value) const noexcept;
bool GetDouble(double* value) const noexcept;
bool GetMapPointer(const TMapType** value) const noexcept;
bool GetArrayPointer(const TArray** value) const noexcept;
bool GetString(TString* value) const;
bool GetMap(TMapType* value) const;
bool GetArray(TArray* value) const;
bool GetValue(size_t index, TJsonValue* value) const;
bool GetValue(TStringBuf key, TJsonValue* value) const;
bool GetValuePointer(size_t index, const TJsonValue** value) const noexcept;
bool GetValuePointer(TStringBuf key, const TJsonValue** value) const noexcept;
bool GetValuePointer(TStringBuf key, TJsonValue** value) noexcept;
// Checking for defined non-null value
bool IsDefined() const noexcept {
return Type != JSON_UNDEFINED && Type != JSON_NULL;
}
bool IsNull() const noexcept;
bool IsBoolean() const noexcept;
bool IsDouble() const noexcept;
bool IsString() const noexcept;
bool IsMap() const noexcept;
bool IsArray() const noexcept;
/// @return true if JSON_INTEGER or (JSON_UINTEGER and Value <= Max<long long>)
bool IsInteger() const noexcept;
/// @return true if JSON_UINTEGER or (JSON_INTEGER and Value >= 0)
bool IsUInteger() const noexcept;
bool Has(const TStringBuf& key) const noexcept;
bool Has(size_t key) const noexcept;
void Scan(IScanCallback& callback);
/// Non-robust comparison.
bool operator==(const TJsonValue& rhs) const;
void Swap(TJsonValue& rhs) noexcept;
// save using util/ysaveload.h serialization (not to JSON stream)
void Save(IOutputStream* s) const;
// load using util/ysaveload.h serialization (not as JSON stream)
void Load(IInputStream* s);
static const TJsonValue UNDEFINED;
private:
EJsonValueType Type = JSON_UNDEFINED;
union TValueUnion {
bool Boolean;
long long Integer;
unsigned long long UInteger;
double Double;
TString String;
TMapType* Map;
TArray* Array;
TValueUnion() noexcept {
Zero(*this);
}
~TValueUnion() noexcept {
}
};
TValueUnion Value;
void DoScan(const TString& path, TJsonValue* parent, IScanCallback& callback);
void SwapWithUndefined(TJsonValue& output) noexcept;
/**
@throw yexception if Back shouldn't be called on the object.
*/
void BackChecks() const;
};
inline bool GetBoolean(const TJsonValue& jv, size_t index, bool* value) noexcept {
return jv[index].GetBoolean(value);
}
inline bool GetInteger(const TJsonValue& jv, size_t index, long long* value) noexcept {
return jv[index].GetInteger(value);
}
inline bool GetUInteger(const TJsonValue& jv, size_t index, unsigned long long* value) noexcept {
return jv[index].GetUInteger(value);
}
inline bool GetDouble(const TJsonValue& jv, size_t index, double* value) noexcept {
return jv[index].GetDouble(value);
}
inline bool GetString(const TJsonValue& jv, size_t index, TString* value) {
return jv[index].GetString(value);
}
bool GetMapPointer(const TJsonValue& jv, size_t index, const TJsonValue::TMapType** value);
bool GetArrayPointer(const TJsonValue& jv, size_t index, const TJsonValue::TArray** value);
inline bool GetBoolean(const TJsonValue& jv, TStringBuf key, bool* value) noexcept {
return jv[key].GetBoolean(value);
}
inline bool GetInteger(const TJsonValue& jv, TStringBuf key, long long* value) noexcept {
return jv[key].GetInteger(value);
}
inline bool GetUInteger(const TJsonValue& jv, TStringBuf key, unsigned long long* value) noexcept {
return jv[key].GetUInteger(value);
}
inline bool GetDouble(const TJsonValue& jv, TStringBuf key, double* value) noexcept {
return jv[key].GetDouble(value);
}
inline bool GetString(const TJsonValue& jv, TStringBuf key, TString* value) {
return jv[key].GetString(value);
}
bool GetMapPointer(const TJsonValue& jv, const TStringBuf key, const TJsonValue::TMapType** value);
bool GetArrayPointer(const TJsonValue& jv, const TStringBuf key, const TJsonValue::TArray** value);
class TJsonMap: public TJsonValue {
public:
TJsonMap()
: TJsonValue(NJson::JSON_MAP)
{}
TJsonMap(const std::initializer_list<std::pair<TString, TJsonValue>>& list)
: TJsonValue(NJson::JSON_MAP)
{
GetMapSafe() = THashMap<TString, TJsonValue>(list);
}
};
class TJsonArray: public TJsonValue {
public:
TJsonArray()
: TJsonValue(NJson::JSON_ARRAY)
{}
TJsonArray(const std::initializer_list<TJsonValue>& list)
: TJsonValue(NJson::JSON_ARRAY)
{
GetArraySafe() = TJsonValue::TArray(list);
}
};
}
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