TBufferJSON Class Reference

Class for serializing object to and from JavaScript Object Notation (JSON) format.

It creates such object representation, which can be directly used in JavaScript ROOT (JSROOT) for drawing.

TBufferJSON implements TBuffer interface, therefore most of ROOT and user classes can be converted into JSON. There are certain limitations for classes with custom streamers, which should be equipped specially for this purposes (see TCanvas::Streamer() as example).

To perform conversion into JSON, one should use TBufferJSON::ToJSON method:

TH1 *h1 = new TH1I("h1", "title", 100, 0, 10);
h1->FillRandom("gaus",10000);
TString json = TBufferJSON::ToJSON(h1);

To reconstruct object from the JSON string, one should do:

TH1 *hnew = nullptr;
TBufferJSON::FromJSON(hnew, json);
if (hnew) hnew->Draw("hist");

JSON does not include stored class version, therefore schema evolution (reading of older class versions) is not supported. JSON should not be used as persistent storage for object data - only for live applications.

All STL containers by default converted into JSON Array. Vector of integers:

std::vector<int> vect = {1,4,7};
auto json = TBufferJSON::ToJSON(&vect);

Will produce JSON code "[1, 4, 7]".

There are special handling for map classes like map and multimap. They will create Array of pair objects with "first" and "second" as data members. Code:

std::map<int,string> m;
m[1] = "number 1";
m[2] = "number 2";
auto json = TBufferJSON::ToJSON(&m);

Will generate json string:

[
  {"$pair" : "pair<int,string>", "first" : 1, "second" : "number 1"},
  {"$pair" : "pair<int,string>", "first" : 2, "second" : "number 2"}
]

In special cases map container can be converted into JSON object. For that key parameter must be std::string and compact parameter should be 5. Like in example:

std::map<std::string,int> data;
data["name1"] = 11;
data["name2"] = 22;
 
auto json = TBufferJSON::ToJSON(&data, TBufferJSON::kMapAsObject);

Will produce JSON output:

{
  "_typename": "map<string,int>",
  "name1": 11,
  "name2": 22
}

Another possibility to enforce such conversion - add "JSON_object" into comment line of correspondent data member like:

class Container {
   std::map<std::string,int> data;  ///<  JSON_object
};

Definition at line 30 of file TBufferJSON.h.

Public Types
enum	{   kNoCompress = 0 , kNoIndent = 1 , kNoNewLine = 2 , kNoSpaces = 3 ,   kMapAsObject = 5 , kZeroSuppression = 10 , kSameSuppression = 20 , kBase64 = 30 ,   kSkipTypeInfo = 100 }
Public Types inherited from TBufferIO
enum	{ kMapSize = 503 }
enum	EStatusBits {   kNotDecompressed = (1ULL << ( 15 )) , kTextBasedStreaming = (1ULL << ( 18 )) , kUser1 = (1ULL << ( 21 )) , kUser2 = (1ULL << ( 22 )) ,   kUser3 = (1ULL << ( 23 )) }
Public Types inherited from TBuffer
enum	{ kInitialSize = 1024 , kMinimalSize = 128 }
enum	EMode { kRead = 0 , kWrite = 1 }
enum	EStatusBits { kIsOwner = (1ULL << ( 16 )) , kCannotHandleMemberWiseStreaming = (1ULL << ( 17 )) }
Public Types inherited from TObject
enum	{   kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,   kBitMask = 0x00ffffff }
enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }
enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }
enum	EStatusBits {   kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) ,   kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Public Member Functions
	TBufferJSON (TBuffer::EMode mode=TBuffer::kWrite)
	Creates buffer object to serialize data into json.
	~TBufferJSON () override
	destroy buffer
void	ClassBegin (const TClass *, Version_t=-1) final
	Should be called in the beginning of custom class streamer.
void	ClassEnd (const TClass *) final
	Should be called at the end of custom streamer See TBufferJSON::ClassBegin for more details.
void	ClassMember (const char *name, const char *typeName=nullptr, Int_t arrsize1=-1, Int_t arrsize2=-1) final
	Method indicates name and typename of class member, which should be now streamed in custom streamer Following combinations are supported:
void	DecrementLevel (TVirtualStreamerInfo *) final
	Function is called from TStreamerInfo WriteBuffer and ReadBuffer functions and decrease level in json structure.
TVirtualStreamerInfo *	GetInfo () final
	Return current streamer info element.
void	IncrementLevel (TVirtualStreamerInfo *) final
	Function is called from TStreamerInfo WriteBuffer and ReadBuffer functions and indent new level in json structure.
TClass *	IsA () const override
Bool_t	IsSkipClassInfo (const TClass *cl) const
	Returns true if class info will be skipped from JSON.
Int_t	ReadArray (Bool_t *&b) final
	Read array of Bool_t from buffer.
Int_t	ReadArray (Char_t *&c) final
	Read array of Char_t from buffer.
Int_t	ReadArray (Double_t *&d) final
	Read array of Double_t from buffer.
Int_t	ReadArray (Float_t *&f) final
	Read array of Float_t from buffer.
Int_t	ReadArray (Int_t *&i) final
	Read array of Int_t from buffer.
Int_t	ReadArray (Long64_t *&l) final
	Read array of Long64_t from buffer.
Int_t	ReadArray (Long_t *&l) final
	Read array of Long_t from buffer.
Int_t	ReadArray (Short_t *&h) final
	Read array of Short_t from buffer.
Int_t	ReadArray (UChar_t *&c) final
	Read array of UChar_t from buffer.
Int_t	ReadArray (UInt_t *&i) final
	Read array of UInt_t from buffer.
Int_t	ReadArray (ULong64_t *&l) final
	Read array of ULong64_t from buffer.
Int_t	ReadArray (ULong_t *&l) final
	Read array of ULong_t from buffer.
Int_t	ReadArray (UShort_t *&h) final
	Read array of UShort_t from buffer.
void	ReadBaseClass (void *start, TStreamerBase *elem) final
	Read data of base class.
void	ReadBool (Bool_t &b) final
	Reads Bool_t value from buffer.
void	ReadChar (Char_t &c) final
	Reads Char_t value from buffer.
void	ReadCharP (Char_t *c) final
	Reads array of characters from buffer.
void	ReadCharStar (char *&s) final
	Reads a char* string.
TClass *	ReadClass (const TClass *cl=nullptr, UInt_t *objTag=nullptr) final
	suppressed function of TBuffer
void	ReadDouble (Double_t &d) final
	Reads Double_t value from buffer.
void	ReadFastArray (Bool_t *b, Int_t n) final
	read array of Bool_t from buffer
void	ReadFastArray (Char_t *c, Int_t n) final
	read array of Char_t from buffer
void	ReadFastArray (Double_t *d, Int_t n) final
	read array of Double_t from buffer
void	ReadFastArray (Float_t *f, Int_t n) final
	read array of Float_t from buffer
void	ReadFastArray (Int_t *i, Int_t n) final
	read array of Int_t from buffer
void	ReadFastArray (Long64_t *l, Int_t n) final
	read array of Long64_t from buffer
void	ReadFastArray (Long_t *l, Int_t n) final
	read array of Long_t from buffer
void	ReadFastArray (Short_t *h, Int_t n) final
	read array of Short_t from buffer
void	ReadFastArray (UChar_t *c, Int_t n) final
	read array of UChar_t from buffer
void	ReadFastArray (UInt_t *i, Int_t n) final
	read array of UInt_t from buffer
void	ReadFastArray (ULong64_t *l, Int_t n) final
	read array of ULong64_t from buffer
void	ReadFastArray (ULong_t *l, Int_t n) final
	read array of ULong_t from buffer
void	ReadFastArray (UShort_t *h, Int_t n) final
	read array of UShort_t from buffer
void	ReadFastArray (void **startp, const TClass *cl, Int_t n=1, Bool_t isPreAlloc=kFALSE, TMemberStreamer *s=nullptr, const TClass *onFileClass=nullptr) final
	redefined here to avoid warning message from gcc
void	ReadFastArray (void *start, const TClass *cl, Int_t n=1, TMemberStreamer *s=nullptr, const TClass *onFileClass=nullptr) final
	Read an array of 'n' objects from the I/O buffer.
void	ReadFastArrayString (Char_t *c, Int_t n) final
	read array of Char_t from buffer
void	ReadFloat (Float_t &f) final
	Reads Float_t value from buffer.
void	ReadInt (Int_t &i) final
	Reads Int_t value from buffer.
void	ReadLong (Long_t &l) final
	Reads Long_t value from buffer.
void	ReadLong64 (Long64_t &l) final
	Reads Long64_t value from buffer.
void *	ReadObjectAny (const TClass *clCast) final
	Read object from buffer. Only used from TBuffer.
void	ReadShort (Short_t &s) final
	Reads Short_t value from buffer.
Int_t	ReadStaticArray (Bool_t *b) final
	Read array of Bool_t from buffer.
Int_t	ReadStaticArray (Char_t *c) final
	Read array of Char_t from buffer.
Int_t	ReadStaticArray (Double_t *d) final
	Read array of Double_t from buffer.
Int_t	ReadStaticArray (Float_t *f) final
	Read array of Float_t from buffer.
Int_t	ReadStaticArray (Int_t *i) final
	Read array of Int_t from buffer.
Int_t	ReadStaticArray (Long64_t *l) final
	Read array of Long64_t from buffer.
Int_t	ReadStaticArray (Long_t *l) final
	Read array of Long_t from buffer.
Int_t	ReadStaticArray (Short_t *h) final
	Read array of Short_t from buffer.
Int_t	ReadStaticArray (UChar_t *c) final
	Read array of UChar_t from buffer.
Int_t	ReadStaticArray (UInt_t *i) final
	Read array of UInt_t from buffer.
Int_t	ReadStaticArray (ULong64_t *l) final
	Read array of ULong64_t from buffer.
Int_t	ReadStaticArray (ULong_t *l) final
	Read array of ULong_t from buffer.
Int_t	ReadStaticArray (UShort_t *h) final
	Read array of UShort_t from buffer.
virtual void	ReadStdString (std::string &s)
void	ReadStdString (std::string *s) final
	Reads a std::string.
virtual void	ReadStdString (std::string *s)=0
void	ReadTString (TString &s) final
	Reads a TString.
void	ReadUChar (UChar_t &c) final
	Reads UChar_t value from buffer.
void	ReadUInt (UInt_t &i) final
	Reads UInt_t value from buffer.
void	ReadULong (ULong_t &l) final
	Reads ULong_t value from buffer.
void	ReadULong64 (ULong64_t &l) final
	Reads ULong64_t value from buffer.
void	ReadUShort (UShort_t &s) final
	Reads UShort_t value from buffer.
Version_t	ReadVersion (UInt_t *start=nullptr, UInt_t *bcnt=nullptr, const TClass *cl=nullptr) final
	read version value from buffer
void *	RestoreObject (const char *str, TClass **cl)
	Read object from JSON In class pointer (if specified) read class is returned One must specify expected object class, if it is TArray or STL container.
void	SetCompact (int level)
	Set level of space/newline/array compression Lower digit of compact parameter define formatting rules.
void	SetSkipClassInfo (const TClass *cl)
	Specify class which typename will not be stored in JSON Several classes can be configured To exclude typeinfo for all classes, call TBufferJSON::SetTypenameTag("")
void	SetStreamerElementNumber (TStreamerElement *elem, Int_t comp_type) final
	Function is called from TStreamerInfo WriteBuffer and ReadBuffer functions and add/verify next element of json structure This calls allows separate data, correspondent to one class member, from another.
void	SetTypenameTag (const char *tag="_typename")
	Configures _typename tag in JSON structures By default "_typename" field in JSON structures used to store class information One can specify alternative tag like "$typename" or "xy", but such JSON can not be correctly used in JSROOT If empty string is provided, class information will not be stored.
void	SetTypeversionTag (const char *tag=nullptr)
	Configures _typeversion tag in JSON One can specify name of the JSON tag like "_typeversion" or "$tv" which will be used to store class version Such tag can be used to correctly recover objects from JSON If empty string is provided (default), class version will not be stored.
void	SkipObjectAny () final
	Skip any kind of object from buffer.
TString	StoreObject (const void *obj, const TClass *cl)
	Store provided object as JSON structure Allows to configure different TBufferJSON properties before converting object into JSON Actual object class must be specified here Method can be safely called once - after that TBufferJSON instance must be destroyed Code should look like:
void	Streamer (TBuffer &) override
	Stream an object of class TObject.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
void	StreamObject (TObject *obj) override
void	StreamObject (void *obj, const char *className, const TClass *onFileClass=nullptr) override
	stream object to/from buffer
void	StreamObject (void *obj, const std::type_info &typeinfo, const TClass *onFileClass=nullptr) override
	stream object to/from buffer
void	StreamObject (void *obj, const TClass *cl, const TClass *onFileClass=nullptr) final
	stream object to/from buffer
void	WriteArray (const Bool_t *b, Int_t n) final
	Write array of Bool_t to buffer.
void	WriteArray (const Char_t *c, Int_t n) final
	Write array of Char_t to buffer.
void	WriteArray (const Double_t *d, Int_t n) final
	Write array of Double_t to buffer.
void	WriteArray (const Float_t *f, Int_t n) final
	Write array of Float_t to buffer.
void	WriteArray (const Int_t *i, Int_t n) final
	Write array of Int_ to buffer.
void	WriteArray (const Long64_t *l, Int_t n) final
	Write array of Long64_t to buffer.
void	WriteArray (const Long_t *l, Int_t n) final
	Write array of Long_t to buffer.
void	WriteArray (const Short_t *h, Int_t n) final
	Write array of Short_t to buffer.
void	WriteArray (const UChar_t *c, Int_t n) final
	Write array of UChar_t to buffer.
void	WriteArray (const UInt_t *i, Int_t n) final
	Write array of UInt_t to buffer.
void	WriteArray (const ULong64_t *l, Int_t n) final
	Write array of ULong64_t to buffer.
void	WriteArray (const ULong_t *l, Int_t n) final
	Write array of ULong_t to buffer.
void	WriteArray (const UShort_t *h, Int_t n) final
	Write array of UShort_t to buffer.
void	WriteBool (Bool_t b) final
	Writes Bool_t value to buffer.
void	WriteChar (Char_t c) final
	Writes Char_t value to buffer.
void	WriteCharP (const Char_t *c) final
	Writes array of characters to buffer.
void	WriteCharStar (char *s) final
	Writes a char*.
void	WriteClass (const TClass *cl) final
	suppressed function of TBuffer
void	WriteDouble (Double_t d) final
	Writes Double_t value to buffer.
void	WriteFastArray (const Bool_t *b, Long64_t n) final
	Write array of Bool_t to buffer.
void	WriteFastArray (const Char_t *c, Long64_t n) final
	Write array of Char_t to buffer.
void	WriteFastArray (const Double_t *d, Long64_t n) final
	Write array of Double_t to buffer.
void	WriteFastArray (const Float_t *f, Long64_t n) final
	Write array of Float_t to buffer.
void	WriteFastArray (const Int_t *i, Long64_t n) final
	Write array of Int_t to buffer.
void	WriteFastArray (const Long64_t *l, Long64_t n) final
	Write array of Long64_t to buffer.
void	WriteFastArray (const Long_t *l, Long64_t n) final
	Write array of Long_t to buffer.
void	WriteFastArray (const Short_t *h, Long64_t n) final
	Write array of Short_t to buffer.
void	WriteFastArray (const UChar_t *c, Long64_t n) final
	Write array of UChar_t to buffer.
void	WriteFastArray (const UInt_t *i, Long64_t n) final
	Write array of UInt_t to buffer.
void	WriteFastArray (const ULong64_t *l, Long64_t n) final
	Write array of ULong64_t to buffer.
void	WriteFastArray (const ULong_t *l, Long64_t n) final
	Write array of ULong_t to buffer.
void	WriteFastArray (const UShort_t *h, Long64_t n) final
	Write array of UShort_t to buffer.
Int_t	WriteFastArray (void **startp, const TClass *cl, Long64_t n=1, Bool_t isPreAlloc=kFALSE, TMemberStreamer *s=nullptr) final
	Recall TBuffer function to avoid gcc warning message.
void	WriteFastArray (void *start, const TClass *cl, Long64_t n=1, TMemberStreamer *s=nullptr) final
	Recall TBuffer function to avoid gcc warning message.
void	WriteFastArrayString (const Char_t *c, Long64_t n) final
	Write array of Char_t to buffer.
void	WriteFloat (Float_t f) final
	Writes Float_t value to buffer.
void	WriteInt (Int_t i) final
	Writes Int_t value to buffer.
void	WriteLong (Long_t l) final
	Writes Long_t value to buffer.
void	WriteLong64 (Long64_t l) final
	Writes Long64_t value to buffer.
void	WriteShort (Short_t s) final
	Writes Short_t value to buffer.
void	WriteStdString (const std::string *s) final
	Writes a std::string.
virtual void	WriteStdString (const std::string *s)=0
virtual void	WriteStdString (std::string &s)
void	WriteTString (const TString &s) final
	Writes a TString.
void	WriteUChar (UChar_t c) final
	Writes UChar_t value to buffer.
void	WriteUInt (UInt_t i) final
	Writes UInt_t value to buffer.
void	WriteULong (ULong_t l) final
	Writes ULong_t value to buffer.
void	WriteULong64 (ULong64_t l) final
	Writes ULong64_t value to buffer.
void	WriteUShort (UShort_t s) final
	Writes UShort_t value to buffer.
UInt_t	WriteVersion (const TClass *cl, Bool_t useBcnt=kFALSE) final
	Ignored in TBufferJSON.
Public Member Functions inherited from TBufferText
	~TBufferText () override
	destructor
Int_t	ApplySequence (const TStreamerInfoActions::TActionSequence &sequence, void *object) final
	Read one collection of objects from the buffer using the StreamerInfoLoopAction.
Int_t	ApplySequence (const TStreamerInfoActions::TActionSequence &sequence, void *start_collection, void *end_collection) final
	Read one collection of objects from the buffer using the StreamerInfoLoopAction.
Int_t	ApplySequenceVecPtr (const TStreamerInfoActions::TActionSequence &sequence, void *start_collection, void *end_collection) final
	Read one collection of objects from the buffer using the StreamerInfoLoopAction.
Int_t	CheckByteCount (UInt_t, UInt_t, const char *) final
Int_t	CheckByteCount (UInt_t, UInt_t, const TClass *) final
TClass *	IsA () const override
Int_t	ReadArrayDouble32 (Double_t *&d, TStreamerElement *ele=nullptr) override
	Read array of Double32_t from buffer.
Int_t	ReadArrayFloat16 (Float_t *&f, TStreamerElement *ele=nullptr) override
	Read array of Float16_t from buffer.
Int_t	ReadBuf (void *, Int_t) final
Int_t	ReadClassBuffer (const TClass *, void *, const TClass *=nullptr) override
	Deserialize information from a buffer into an object.
Int_t	ReadClassBuffer (const TClass *, void *, Int_t, UInt_t, UInt_t, const TClass *=nullptr) override
	Deserialize information from a buffer into an object.
Int_t	ReadClassEmulated (const TClass *, void *, const TClass *=nullptr) final
void	ReadDouble32 (Double_t *d, TStreamerElement *ele=nullptr) final
	read a Double32_t from the buffer
void	ReadFastArrayDouble32 (Double_t *d, Int_t n, TStreamerElement *ele=nullptr) final
	read array of Double32_t from buffer
void	ReadFastArrayFloat16 (Float_t *f, Int_t n, TStreamerElement *ele=nullptr) final
	read array of Float16_t from buffer
void	ReadFastArrayWithFactor (Double_t *ptr, Int_t n, Double_t factor, Double_t minvalue) final
	read array of Double32_t from buffer
void	ReadFastArrayWithFactor (Float_t *ptr, Int_t n, Double_t factor, Double_t minvalue) final
	read array of Float16_t from buffer
void	ReadFastArrayWithNbits (Double_t *ptr, Int_t n, Int_t nbits) final
	read array of Double32_t from buffer
void	ReadFastArrayWithNbits (Float_t *ptr, Int_t n, Int_t nbits) final
	read array of Float16_t from buffer
void	ReadFloat16 (Float_t *f, TStreamerElement *ele=nullptr) final
	read a Float16_t from the buffer
TObject *	ReadObject (const TClass *) final
Int_t	ReadStaticArrayDouble32 (Double_t *d, TStreamerElement *ele=nullptr) final
	Read array of Double32_t from buffer.
Int_t	ReadStaticArrayFloat16 (Float_t *f, TStreamerElement *ele=nullptr) final
	Read array of Float16_t from buffer.
char *	ReadString (char *, Int_t) final
Version_t	ReadVersionForMemberWise (const TClass *=nullptr) final
Version_t	ReadVersionNoCheckSum (UInt_t *, UInt_t *) final
void	ReadWithFactor (Double_t *ptr, Double_t factor, Double_t minvalue) final
	Read a Double32_t from the buffer when the factor and minimun value have been specified see comments about Double32_t encoding at TBufferFile::WriteDouble32().
void	ReadWithFactor (Float_t *ptr, Double_t factor, Double_t minvalue) final
	Read a Double32_t from the buffer when the factor and minimun value have been specified see comments about Double32_t encoding at TBufferFile::WriteDouble32().
void	ReadWithNbits (Double_t *ptr, Int_t nbits) final
	Read a Double32_t from the buffer when the number of bits is specified (explicitly or not) see comments about Double32_t encoding at TBufferFile::WriteDouble32().
void	ReadWithNbits (Float_t *ptr, Int_t nbits) final
	Read a Float16_t from the buffer when the number of bits is specified (explicitly or not) see comments about Float16_t encoding at TBufferFile::WriteFloat16().
void	SetByteCount (UInt_t, Bool_t=kFALSE) final
void	SkipVersion (const TClass *cl=nullptr) final
	Skip class version from I/O buffer.
void	Streamer (TBuffer &) override
	Stream an object of class TObject.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
void	StreamObject (TObject *obj) override
virtual void	StreamObject (TObject *obj)=0
void	StreamObject (void *obj, const char *className, const TClass *onFileClass=nullptr) override
	stream object to/from buffer
virtual void	StreamObject (void *obj, const char *className, const TClass *onFileClass=nullptr)=0
void	StreamObject (void *obj, const std::type_info &typeinfo, const TClass *onFileClass=nullptr) override
	stream object to/from buffer
virtual void	StreamObject (void *obj, const std::type_info &typeinfo, const TClass *onFileClass=nullptr)=0
virtual void	StreamObject (void *obj, const TClass *cl, const TClass *onFileClass=nullptr)=0
void	WriteArrayDouble32 (const Double_t *d, Int_t n, TStreamerElement *ele=nullptr) final
	Write array of Double32_t to buffer.
void	WriteArrayFloat16 (const Float_t *f, Int_t n, TStreamerElement *ele=nullptr) final
	Write array of Float16_t to buffer.
virtual void	WriteBaseClass (void *start, TStreamerBase *elem)
	Write data of base class.
void	WriteBuf (const void *, Int_t) final
Int_t	WriteClassBuffer (const TClass *cl, void *pointer) override
	Function called by the Streamer functions to serialize object at p to buffer b.
void	WriteDouble32 (Double_t *d, TStreamerElement *ele=nullptr) final
	write a Double32_t to the buffer
void	WriteFastArrayDouble32 (const Double_t *d, Long64_t n, TStreamerElement *ele=nullptr) final
	Write array of Double32_t to buffer.
void	WriteFastArrayFloat16 (const Float_t *d, Long64_t n, TStreamerElement *ele=nullptr) final
	Write array of Float16_t to buffer.
void	WriteFloat16 (Float_t *f, TStreamerElement *ele=nullptr) final
	write a Float16_t to the buffer
void	WriteString (const char *) final
UInt_t	WriteVersionMemberWise (const TClass *, Bool_t=kFALSE) final
Public Member Functions inherited from TBufferIO
	~TBufferIO () override
	destructor
Bool_t	CheckObject (const TObject *obj) override
	Check if the specified object is already in the buffer.
Bool_t	CheckObject (const void *obj, const TClass *ptrClass) override
	Check if the specified object of the specified class is already in the buffer.
void	ForceWriteInfo (TVirtualStreamerInfo *info, Bool_t force) override
	force writing the TStreamerInfo to the file
void	ForceWriteInfoClones (TClonesArray *a) override
	Make sure TStreamerInfo is not optimized, otherwise it will not be possible to support schema evolution in read mode.
Int_t	GetBufferDisplacement () const override
TProcessID *	GetLastProcessID (TRefTable *reftable) const override
	Return the last TProcessID in the file.
Int_t	GetMapCount () const override
void	GetMappedObject (UInt_t tag, void *&ptr, TClass *&ClassPtr) const override
	Retrieve the object stored in the buffer's object map at 'tag' Set ptr and ClassPtr respectively to the address of the object and a pointer to its TClass.
UShort_t	GetPidOffset () const override
UInt_t	GetTRefExecId () override
	Return the exec id stored in the current TStreamerInfo element.
Int_t	GetVersionOwner () const override
	Return the version number of the owner file.
void	InitMap () override
	Create the fMap container and initialize them with the null object.
void	MapObject (const TObject *obj, UInt_t offset=1) override
	Add object to the fMap container.
void	MapObject (const void *obj, const TClass *cl, UInt_t offset=1) override
	Add object to the fMap container.
Int_t	ReadClones (TClonesArray *a, Int_t nobjects, Version_t objvers) override
	Interface to TStreamerInfo::ReadBufferClones.
TProcessID *	ReadProcessID (UShort_t pidf) override
	The TProcessID with number pidf is read from file.
void	Reset () override
	Reset buffer object. Resets map and buffer offset.
void	ResetMap () override
	Delete existing fMap and reset map counter.
void	SetBufferDisplacement () override
void	SetBufferDisplacement (Int_t skipped) override
void	SetPidOffset (UShort_t offset) override
	This offset is used when a key (or basket) is transfered from one file to the other.
void	SetReadParam (Int_t mapsize) override
	Set the initial size of the map used to store object and class references during reading.
void	SetWriteParam (Int_t mapsize) override
	Set the initial size of the hashtable used to store object and class references during writing.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
void	TagStreamerInfo (TVirtualStreamerInfo *info) override
	Mark the classindex of the current file as using this TStreamerInfo.
Int_t	WriteClones (TClonesArray *a, Int_t nobjects) override
	Interface to TStreamerInfo::WriteBufferClones.
template<class T >
Int_t	WriteObject (const T *objptr, Bool_t cacheReuse=kTRUE)
virtual void	WriteObject (const TObject *obj, Bool_t cacheReuse)=0
void	WriteObject (const TObject *obj, Bool_t cacheReuse=kTRUE) override
	Write object to I/O buffer.
Int_t	WriteObjectAny (const void *obj, const TClass *ptrClass, Bool_t cacheReuse=kTRUE) override
	Write object to I/O buffer.
UShort_t	WriteProcessID (TProcessID *pid) override
	Check if the ProcessID pid is already in the file.
Public Member Functions inherited from TBuffer
	TBuffer (EMode mode)
	Create an I/O buffer object.
	TBuffer (EMode mode, Int_t bufsiz)
	Create an I/O buffer object.
	TBuffer (EMode mode, Int_t bufsiz, void *buf, Bool_t adopt=kTRUE, ReAllocCharFun_t reallocfunc=nullptr)
	Create an I/O buffer object.
virtual	~TBuffer ()
	Delete an I/O buffer object.
void	AutoExpand (Int_t size_needed)
	Automatically calculate a new size and expand the buffer to fit at least size_needed.
char *	Buffer () const
Int_t	BufferSize () const
Bool_t	ByteSwapBuffer (Long64_t n, EDataType type)
	Byte-swap N primitive-elements in the buffer.
void	DetachBuffer ()
void	Expand (Int_t newsize, Bool_t copy=kTRUE)
	Expand (or shrink) the I/O buffer to newsize bytes.
Int_t	GetBufferVersion () const
char *	GetCurrent () const
TObject *	GetParent () const
	Return pointer to parent of this buffer.
ReAllocCharFun_t	GetReAllocFunc () const
	Return the reallocation method currently used.
Bool_t	IsReading () const
Bool_t	IsWriting () const
Int_t	Length () const
virtual TVirtualArray *	PeekDataCache () const
	Return the 'current' data cache area from the list of area to be used for temporarily store 'missing' data members.
virtual TVirtualArray *	PopDataCache ()
	Pop and Return the 'current' data cache area from the list of area to be used for temporarily store 'missing' data members.
virtual void	PushDataCache (TVirtualArray *)
	Push a new data cache area onto the list of area to be used for temporarily store 'missing' data members.
void	SetBuffer (void *buf, UInt_t bufsiz=0, Bool_t adopt=kTRUE, ReAllocCharFun_t reallocfunc=nullptr)
	Sets a new buffer in an existing TBuffer object.
void	SetBufferOffset (Int_t offset=0)
void	SetParent (TObject *parent)
	Set parent owning this buffer.
void	SetReadMode ()
	Set buffer in read mode.
void	SetReAllocFunc (ReAllocCharFun_t reallocfunc=nullptr)
	Set which memory reallocation method to use.
void	SetWriteMode ()
	Set buffer in write mode.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
template<class T >
Int_t	WriteObject (const T *objptr, Bool_t cacheReuse=kTRUE)
Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.
	TObject (const TObject &object)
	TObject copy ctor.
virtual	~TObject ()
	TObject destructor.
void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.
virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.
virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.
ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.
virtual const char *	ClassName () const
	Returns name of class to which the object belongs.
virtual void	Clear (Option_t *="")
virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.
virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.
virtual void	Copy (TObject &object) const
	Copy this to obj.
virtual void	Delete (Option_t *option="")
	Delete this object.
virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.
virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.
virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.
virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).
virtual void	Dump () const
	Dump contents of object on stdout.
virtual void	Error (const char *method, const char *msgfmt,...) const
	Issue error message.
virtual void	Execute (const char *method, const char *params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.
virtual void	Execute (TMethod *method, TObjArray *params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.
virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).
virtual void	Fatal (const char *method, const char *msgfmt,...) const
	Issue fatal error message.
virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.
virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.
virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.
virtual const char *	GetIconName () const
	Returns mime type name of object.
virtual const char *	GetName () const
	Returns name of object.
virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).
virtual Option_t *	GetOption () const
virtual const char *	GetTitle () const
	Returns title of object.
virtual UInt_t	GetUniqueID () const
	Return the unique object id.
virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.
virtual ULong_t	Hash () const
	Return hash value for this object.
Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.
virtual void	Info (const char *method, const char *msgfmt,...) const
	Issue info message.
virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".
virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.
virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.
void	InvertBit (UInt_t f)
Bool_t	IsDestructed () const
	IsDestructed.
virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).
virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).
R__ALWAYS_INLINE Bool_t	IsOnHeap () const
virtual Bool_t	IsSortable () const
R__ALWAYS_INLINE Bool_t	IsZombie () const
virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout.
void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).
virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).
void	Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.
void	operator delete (void *ptr)
	Operator delete.
void	operator delete (void *ptr, void *vp)
	Only called by placement new when throwing an exception.
void	operator delete[] (void *ptr)
	Operator delete [].
void	operator delete[] (void *ptr, void *vp)
	Only called by placement new[] when throwing an exception.
void *	operator new (size_t sz)
void *	operator new (size_t sz, void *vp)
void *	operator new[] (size_t sz)
void *	operator new[] (size_t sz, void *vp)
TObject &	operator= (const TObject &rhs)
	TObject assignment operator.
virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.
virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.
virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself.
virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.
void	ResetBit (UInt_t f)
virtual void	SaveAs (const char *filename="", Option_t *option="") const
	Save this object in the file specified by filename.
virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".
void	SetBit (UInt_t f)
void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.
virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.
virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
virtual void	SysError (const char *method, const char *msgfmt,...) const
	Issue system error message.
R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const
Int_t	TestBits (UInt_t f) const
virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.
virtual void	Warning (const char *method, const char *msgfmt,...) const
	Issue warning message.

Static Public Member Functions
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static TObject *	ConvertFromJSON (const char *str)
	Read TObject-based class from JSON, produced by ConvertToJSON() method.
static void *	ConvertFromJSONAny (const char *str, TClass **cl=nullptr)
	Read object from JSON In class pointer (if specified) read class is returned One must specify expected object class, if it is TArray or STL container.
static TString	ConvertToJSON (const TObject *obj, Int_t compact=0, const char *member_name=nullptr)
	Converts object, inherited from TObject class, to JSON string Lower digit of compact parameter define formatting rules.
static TString	ConvertToJSON (const void *obj, const TClass *cl, Int_t compact=0, const char *member_name=nullptr)
	Converts any type of object to JSON string One should provide pointer on object and its class name Lower digit of compact parameter define formatting rules.
static TString	ConvertToJSON (const void *obj, TDataMember *member, Int_t compact=0, Int_t arraylen=-1)
	Converts selected data member into json Parameter ptr specifies address in memory, where data member is located compact parameter defines compactness of produced JSON (from 0 to 3) arraylen (when specified) is array length for this data member, //[fN] case.
static const char *	DeclFileName ()
static Int_t	ExportToFile (const char *filename, const TObject *obj, const char *option=nullptr)
	Convert object into JSON and store in text file Returns size of the produce file Used in TObject::SaveAs()
static Int_t	ExportToFile (const char *filename, const void *obj, const TClass *cl, const char *option=nullptr)
	Convert object into JSON and store in text file Returns size of the produce file.
template<class T >
static std::unique_ptr< T >	FromJSON (const std::string &json)
template<class T >
static Bool_t	FromJSON (T *&obj, const char *json)
template<class T >
static TString	ToJSON (const T *obj, Int_t compact=0, const char *member_name=nullptr)
Static Public Member Functions inherited from TBufferText
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static void	CompactFloatString (char *buf, unsigned len)
	method compress float string, excluding exp and/or move float point
static const char *	ConvertDouble (Double_t v, char *buf, unsigned len, Bool_t not_optimize=kFALSE)
	convert float to string with configured format
static const char *	ConvertFloat (Float_t v, char *buf, unsigned len, Bool_t not_optimize=kFALSE)
	convert float to string with configured format
static const char *	DeclFileName ()
static const char *	GetDoubleFormat ()
	return current printf format for double members, default "%.14e"
static const char *	GetFloatFormat ()
	return current printf format for float members, default "%e"
static void	SetDoubleFormat (const char *fmt="%.14e")
	set printf format for double members, default "%.14e" use it after SetFloatFormat, which also overwrites format for doubles
static void	SetFloatFormat (const char *fmt="%e")
	set printf format for float/double members, default "%e" to change format only for doubles, use SetDoubleFormat
Static Public Member Functions inherited from TBufferIO
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
static Int_t	GetGlobalReadParam ()
	Get default read map size.
static Int_t	GetGlobalWriteParam ()
	Get default write map size.
static void	SetGlobalReadParam (Int_t mapsize)
	Set the initial size of the map used to store object and class references during reading.
static void	SetGlobalWriteParam (Int_t mapsize)
	Set the initial size of the map used to store object and class references during reading.
Static Public Member Functions inherited from TBuffer
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
static TClass *	GetClass (const char *className)
	Forward to TROOT::GetClass().
static TClass *	GetClass (const std::type_info &typeinfo)
	Forward to TROOT::GetClass().
Static Public Member Functions inherited from TObject
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
static Longptr_t	GetDtorOnly ()
	Return destructor only flag.
static Bool_t	GetObjectStat ()
	Get status of object stat flag.
static void	SetDtorOnly (void *obj)
	Set destructor only flag.
static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Member Functions
void	AppendOutput (const char *line0, const char *line1=nullptr)
	Append two string to the output JSON, normally separate by line break.
void	JsonDisablePostprocessing ()
	disable post-processing of the code
void	JsonPushValue ()
	If value exists, push in the current stack for post-processing.
template<typename T >
Int_t	JsonReadArray (T *value)
	Read static array from JSON - not used.
template<typename T >
void	JsonReadBasic (T &value)
	Template function to read basic value from JSON.
void	JsonReadCollection (TCollection *obj, const TClass *objClass)
	read content of ROOT collection
template<typename T >
void	JsonReadFastArray (T *arr, Int_t arrsize, bool asstring=false)
	Template method to read array from the JSON.
void *	JsonReadObject (void *obj, const TClass *objClass=nullptr, TClass **readClass=nullptr)
	Read object from current JSON node.
void	JsonReadTObjectMembers (TObject *obj, void *node=nullptr)
	Read TObject data members from JSON.
Int_t	JsonSpecialClass (const TClass *cl) const
	return non-zero value when class has special handling in JSON it is TCollection (-130), TArray (100), TString (110), std::string (120) and STL containers (1..6)
void	JsonStartElement (const TStreamerElement *elem, const TClass *base_class)
	Start new class member in JSON structures.
TJSONStackObj *	JsonStartObjectWrite (const TClass *obj_class, TStreamerInfo *info=nullptr)
	Start object element with typeinfo.
template<typename T >
void	JsonWriteArrayCompress (const T *vname, Int_t arrsize, const char *typname)
void	JsonWriteBasic (Bool_t value)
	converts Bool_t to string and add to json value buffer
void	JsonWriteBasic (Char_t value)
	converts Char_t to string and add to json value buffer
void	JsonWriteBasic (Double_t value)
	converts Double_t to string and add to json value buffer
void	JsonWriteBasic (Float_t value)
	converts Float_t to string and add to json value buffer
void	JsonWriteBasic (Int_t value)
	converts Int_t to string and add to json value buffer
void	JsonWriteBasic (Long64_t value)
	converts Long64_t to string and add to json value buffer
void	JsonWriteBasic (Long_t value)
	converts Long_t to string and add to json value buffer
void	JsonWriteBasic (Short_t value)
	converts Short_t to string and add to json value buffer
void	JsonWriteBasic (UChar_t value)
	converts UChar_t to string and add to json value buffer
void	JsonWriteBasic (UInt_t value)
	converts UInt_t to string and add to json value buffer
void	JsonWriteBasic (ULong64_t value)
	converts ULong64_t to string and add to json value buffer
void	JsonWriteBasic (ULong_t value)
	converts ULong_t to string and add to json value buffer
void	JsonWriteBasic (UShort_t value)
	converts UShort_t to string and add to json value buffer
void	JsonWriteCollection (TCollection *obj, const TClass *objClass)
	store content of ROOT collection
void	JsonWriteConstChar (const char *value, Int_t len=-1, const char *=nullptr)
	writes string value, processing all kind of special characters
template<typename T >
void	JsonWriteFastArray (const T *arr, Long64_t arrsize, const char *typname, void(TBufferJSON::*method)(const T *, Int_t, const char *))
	Template method to write array of arbitrary dimensions Different methods can be used for store last array dimension - either JsonWriteArrayCompress<T>() or JsonWriteConstChar()
TString	JsonWriteMember (const void *ptr, TDataMember *member, TClass *memberClass, Int_t arraylen)
	Convert single data member to JSON structures Returns string with converted member.
void	JsonWriteObject (const void *obj, const TClass *objClass, Bool_t check_map=kTRUE)
	Write object to buffer If object was written before, only pointer will be stored If check_map==kFALSE, object will be stored in any case and pointer will not be registered in the map.
void	PerformPostProcessing (TJSONStackObj *stack, const TClass *obj_cl=nullptr)
	Function is converts TObject and TString structures to more compact representation.
TJSONStackObj *	PopStack ()
	remove one level from stack
TJSONStackObj *	PushStack (Int_t inclevel=0, void *readnode=nullptr)
	add new level to the structures stack
TJSONStackObj *	Stack ()
void	WorkWithClass (TStreamerInfo *info, const TClass *cl=nullptr)
	Prepares buffer to stream data of specified class.
void	WorkWithElement (TStreamerElement *elem, Int_t)
	This is call-back from streamer which indicates that class member will be streamed Name of element used in JSON.
void	WriteObjectClass (const void *actualObjStart, const TClass *actualClass, Bool_t cacheReuse) final
	Write object to buffer. Only used from TBuffer.
Protected Member Functions inherited from TBufferText
	TBufferText ()
	Default constructor.
	TBufferText (TBuffer::EMode mode, TObject *parent=nullptr)
	Normal constructor.
Protected Member Functions inherited from TBufferIO
	TBufferIO ()
	TBufferIO (TBuffer::EMode mode)
	constructor
	TBufferIO (TBuffer::EMode mode, Int_t bufsiz)
	constructor
	TBufferIO (TBuffer::EMode mode, Int_t bufsiz, void *buf, Bool_t adopt=kTRUE, ReAllocCharFun_t reallocfunc=nullptr)
	constructor
virtual void	CheckCount (UInt_t)
Long64_t	GetObjectTag (const void *obj)
	Returns tag for specified object from objects map (if exists) Returns 0 if object not included into objects map.
Protected Member Functions inherited from TBuffer
	TBuffer ()
	TBuffer (const TBuffer &)=delete
void	operator= (const TBuffer &)=delete
Int_t	Read (const char *name) override
	Read contents of object with specified name from the current directory.
Int_t	Write (const char *name, Int_t opt, Int_t bufs) const override
	Write this object to the current directory.
Int_t	Write (const char *name, Int_t opt, Int_t bufs) override
	Write this object to the current directory.
Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char *location, const char *fmt, va_list va) const
	Interface to ErrorHandler (protected).
void	MakeZombie ()

Static Protected Member Functions
static void *	ConvertFromJSONChecked (const char *str, const TClass *expectedClass)
	Read objects from JSON, one can reuse existing object.
Static Protected Member Functions inherited from TBufferIO
static R__ALWAYS_INLINE ULong_t	Void_Hash (const void *ptr)
	Return hash value for provided object.

Protected Attributes
Int_t	fArrayCompact {0}
	! 0 - no array compression, 1 - exclude leading/trailing zeros, 2 - check value repetition
TString	fArraySepar
	! depending from compression level, ", " or ","
Int_t	fCompact {0}
	! 0 - no any compression, 1 - no spaces in the begin, 2 - no new lines, 3 - no spaces at all
unsigned	fJsonrCnt {0}
	! counter for all objects, used for referencing
Bool_t	fMapAsObject {kFALSE}
	! when true, std::map will be converted into JSON object
TString	fNumericLocale
	! stored value of setlocale(LC_NUMERIC), which should be recovered at the end
TString	fOutBuffer
	! main output buffer for json code
TString *	fOutput {nullptr}
	! current output buffer for json code
TString	fSemicolon
	! depending from compression level, " : " or ":"
std::vector< const TClass * >	fSkipClasses
	! list of classes, which class info is not stored
std::deque< std::unique_ptr< TJSONStackObj > >	fStack
	! hierarchy of currently streamed element
TString	fTypeNameTag
	! JSON member used for storing class name, when empty - no class name will be stored
TString	fTypeVersionTag
	! JSON member used to store class version, default empty
TString	fValue
	! buffer for current value
Protected Attributes inherited from TBufferIO
TExMap *	fClassMap {nullptr}
	Map containing object,class pairs for reading.
Int_t	fDisplacement {0}
	Value to be added to the map offsets.
TExMap *	fMap {nullptr}
	Map containing object,offset pairs for reading/writing.
Int_t	fMapCount {0}
	Number of objects or classes in map.
Int_t	fMapSize {0}
	Default size of map.
UShort_t	fPidOffset {0}
	Offset to be added to the pid index in this key/buffer.
Protected Attributes inherited from TBuffer
char *	fBufCur
char *	fBuffer
char *	fBufMax
Int_t	fBufSize
CacheList_t	fCacheStack
	Realloc function to be used when extending the buffer.
Bool_t	fMode
TObject *	fParent
ReAllocCharFun_t	fReAllocFunc
Int_t	fVersion

Additional Inherited Members
Protected Types inherited from TBufferIO
enum	{ kNullTag = 0 }
Protected Types inherited from TBuffer
typedef std::vector< TVirtualArray * >	CacheList_t
Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }
Static Protected Attributes inherited from TBufferText
static const char *	fgDoubleFmt = "%.14e"
	! printf argument for doubles, either "%f" or "%e" or "%10f" and so on
static const char *	fgFloatFmt = "%e"
	! printf argument for floats, either "%f" or "%e" or "%10f" and so on
Static Protected Attributes inherited from TBufferIO
static Int_t	fgMapSize = kMapSize
	Default map size for all TBuffer objects.

#include <TBufferJSON.h>

Inheritance diagram for TBufferJSON:

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
kNoCompress	no any compression, maximal size of JSON (default)
kNoIndent	remove spaces in the beginning showing JSON indentation level
kNoNewLine	no indent plus skip newline symbols
kNoSpaces	no new lines plus remove all spaces around "," and ":" symbols
kMapAsObject	store std::map, std::unordered_map as JSON object
kZeroSuppression	if array has much zeros in begin and/or end, they will be removed
kSameSuppression	zero suppression plus compress many similar values together
kBase64	all binary arrays will be compressed with base64 coding, supported by JSROOT
kSkipTypeInfo	do not store typenames in JSON

Definition at line 34 of file TBufferJSON.h.

Constructor & Destructor Documentation

TBufferJSON()

TBufferJSON::TBufferJSON

(

TBuffer::EMode

mode = TBuffer::kWrite

)

Creates buffer object to serialize data into json.

Definition at line 476 of file TBufferJSON.cxx.

~TBufferJSON()

TBufferJSON::~TBufferJSON ( )

override

destroy buffer

Definition at line 497 of file TBufferJSON.cxx.

Member Function Documentation

AppendOutput()

void TBufferJSON::AppendOutput ( const char *  line0, const char *  line1 = nullptr  )

protected

Append two string to the output JSON, normally separate by line break.

Definition at line 1156 of file TBufferJSON.cxx.

Class()

static TClass * TBufferJSON::Class ( )

static

Returns

TClass describing this class

Class_Name()

static const char * TBufferJSON::Class_Name ( )

static

Returns

Name of this class

Class_Version()

static constexpr Version_t TBufferJSON::Class_Version ( )

inlinestaticconstexpr

Returns

Version of this class

Definition at line 332 of file TBufferJSON.h.

ClassBegin()

void TBufferJSON::ClassBegin ( const TClass *  cl, Version_t  = -1  )

finalvirtual

Should be called in the beginning of custom class streamer.

Informs buffer data about class which will be streamed now.

ClassBegin(), ClassEnd() and ClassMember() should be used in custom class streamers to specify which kind of data are now streamed. Such information is used to correctly convert class data to JSON. Without that functions calls classes with custom streamers cannot be used with TBufferJSON

Implements TBuffer.

Definition at line 2204 of file TBufferJSON.cxx.

ClassEnd()

void TBufferJSON::ClassEnd ( const TClass *  )

finalvirtual

Should be called at the end of custom streamer See TBufferJSON::ClassBegin for more details.

Implements TBuffer.

Definition at line 2213 of file TBufferJSON.cxx.

ClassMember()

void TBufferJSON::ClassMember ( const char *  name, const char *  typeName = nullptr, Int_t  arrsize1 = -1, Int_t  arrsize2 = -1  )

finalvirtual

Method indicates name and typename of class member, which should be now streamed in custom streamer Following combinations are supported:

1. name = "ClassName", typeName = 0 or typename==ClassName This is a case, when data of parent class "ClassName" should be streamed. For instance, if class directly inherited from TObject, custom streamer should include following code:

   b.ClassMember("TObject");
   TObject::Streamer(b);

2. Basic data type

   b.ClassMember("fInt","Int_t");
   b >> fInt;

3. Array of basic data types

   b.ClassMember("fArr","Int_t", 5);
   b.ReadFastArray(fArr, 5);

4. Object as data member

   b.ClassMember("fName","TString");
   fName.Streamer(b);

5. Pointer on object as data member

   b.ClassMember("fObj","TObject*");
   b.StreamObject(fObj);

arrsize1 and arrsize2 arguments (when specified) indicate first and second dimension of array. Can be used for array of basic types. See ClassBegin() method for more details.

Implements TBuffer.

Definition at line 2255 of file TBufferJSON.cxx.

ConvertFromJSON()

TObject * TBufferJSON::ConvertFromJSON ( const char *  str )

static

Read TObject-based class from JSON, produced by ConvertToJSON() method.

If object does not inherit from TObject class, return 0.

Definition at line 911 of file TBufferJSON.cxx.

ConvertFromJSONAny()

void * TBufferJSON::ConvertFromJSONAny ( const char *  str, TClass **  cl = nullptr  )

static

Read object from JSON In class pointer (if specified) read class is returned One must specify expected object class, if it is TArray or STL container.

Definition at line 934 of file TBufferJSON.cxx.

ConvertFromJSONChecked()

void * TBufferJSON::ConvertFromJSONChecked ( const char *  str, const TClass *  expectedClass  )

staticprotected

Read objects from JSON, one can reuse existing object.

Definition at line 977 of file TBufferJSON.cxx.

ConvertToJSON() [1/3]

TString TBufferJSON::ConvertToJSON ( const TObject *  obj, Int_t  compact = 0, const char *  member_name = nullptr  )

static

Converts object, inherited from TObject class, to JSON string Lower digit of compact parameter define formatting rules.

• 0 - no any compression, human-readable form
• 1 - exclude spaces in the begin
• 2 - remove newlines
• 3 - exclude spaces as much as possible

Second digit of compact parameter defines algorithm for arrays compression

• 0 - no compression, standard JSON array
• 1 - exclude leading and trailing zeros
• 2 - check values repetition and empty gaps

Maximal compression achieved when compact parameter equal to 23 When member_name specified, converts only this data member

Definition at line 522 of file TBufferJSON.cxx.

ConvertToJSON() [2/3]

TString TBufferJSON::ConvertToJSON ( const void *  obj, const TClass *  cl, Int_t  compact = 0, const char *  member_name = nullptr  )

static

Converts any type of object to JSON string One should provide pointer on object and its class name Lower digit of compact parameter define formatting rules.

• TBufferJSON::kNoCompress (0) - no any compression, human-readable form
• TBufferJSON::kNoIndent (1) - exclude spaces in the begin
• TBufferJSON::kNoNewLine (2) - no indent and no newlines
• TBufferJSON::kNoSpaces (3) - exclude spaces as much as possible Second digit of compact parameter defines algorithm for arrays compression
• 0 - no compression, standard JSON array
• TBufferJSON::kZeroSuppression (10) - exclude leading and trailing zeros
• TBufferJSON::kSameSuppression (20) - check values repetition and empty gaps
• TBufferJSON::kBase64 (30) - arrays will be coded with base64 coding Third digit of compact parameter defines typeinfo storage:
• TBufferJSON::kSkipTypeInfo (100) - "_typename" will be skipped, not always can be read back Maximal none-destructive compression can be achieved when compact parameter equal to TBufferJSON::kNoSpaces + TBufferJSON::kSameSuppression When member_name specified, converts only this data member

Definition at line 638 of file TBufferJSON.cxx.

ConvertToJSON() [3/3]

TString TBufferJSON::ConvertToJSON ( const void *  obj, TDataMember *  member, Int_t  compact = 0, Int_t  arraylen = -1  )

static

Converts selected data member into json Parameter ptr specifies address in memory, where data member is located compact parameter defines compactness of produced JSON (from 0 to 3) arraylen (when specified) is array length for this data member, //[fN] case.

Definition at line 724 of file TBufferJSON.cxx.

DeclFileName()

static const char * TBufferJSON::DeclFileName ( )

inlinestatic

Returns

Name of the file containing the class declaration

Definition at line 332 of file TBufferJSON.h.

DecrementLevel()

void TBufferJSON::DecrementLevel ( TVirtualStreamerInfo *  info )

finalvirtual

Function is called from TStreamerInfo WriteBuffer and ReadBuffer functions and decrease level in json structure.

Implements TBuffer.

Definition at line 2071 of file TBufferJSON.cxx.

ExportToFile() [1/2]

Int_t TBufferJSON::ExportToFile ( const char *  filename, const TObject *  obj, const char *  option = nullptr  )

static

Convert object into JSON and store in text file Returns size of the produce file Used in TObject::SaveAs()

Definition at line 751 of file TBufferJSON.cxx.

ExportToFile() [2/2]

Int_t TBufferJSON::ExportToFile ( const char *  filename, const void *  obj, const TClass *  cl, const char *  option = nullptr  )

static

Convert object into JSON and store in text file Returns size of the produce file.

Definition at line 831 of file TBufferJSON.cxx.

FromJSON() [1/2]

template<class T >

static std::unique_ptr< T > TBufferJSON::FromJSON ( const std::string &  json )

inlinestatic

Definition at line 90 of file TBufferJSON.h.

FromJSON() [2/2]

template<class T >

static Bool_t TBufferJSON::FromJSON ( T *&  obj, const char *  json  )

inlinestatic

Definition at line 81 of file TBufferJSON.h.

GetInfo()

TVirtualStreamerInfo * TBufferJSON::GetInfo ( )

finalvirtual

Return current streamer info element.

Implements TBuffer.

Definition at line 2102 of file TBufferJSON.cxx.

IncrementLevel()

void TBufferJSON::IncrementLevel ( TVirtualStreamerInfo *  info )

finalvirtual

Function is called from TStreamerInfo WriteBuffer and ReadBuffer functions and indent new level in json structure.

This call indicates, that TStreamerInfo functions starts streaming object data of correspondent class

Implements TBuffer.

Definition at line 2024 of file TBufferJSON.cxx.

IsA()

TClass * TBufferJSON::IsA ( ) const

inlineoverridevirtual

Returns

TClass describing current object

Reimplemented from TBufferIO.

Definition at line 332 of file TBufferJSON.h.

IsSkipClassInfo()

Bool_t TBufferJSON::IsSkipClassInfo

(

const TClass *

cl

)

const

Returns true if class info will be skipped from JSON.

Definition at line 614 of file TBufferJSON.cxx.

JsonDisablePostprocessing()

void TBufferJSON::JsonDisablePostprocessing ( )

protected

disable post-processing of the code

Definition at line 1276 of file TBufferJSON.cxx.

JsonPushValue()

void TBufferJSON::JsonPushValue ( )

protected

If value exists, push in the current stack for post-processing.

Definition at line 2544 of file TBufferJSON.cxx.

JsonReadArray()

template<typename T >

Int_t TBufferJSON::JsonReadArray ( T *  value )

protected

Read static array from JSON - not used.

Definition at line 2658 of file TBufferJSON.cxx.

JsonReadBasic()

template<typename T >

void TBufferJSON::JsonReadBasic ( T &  value )

protected

Template function to read basic value from JSON.

Definition at line 3576 of file TBufferJSON.cxx.

JsonReadCollection()

void TBufferJSON::JsonReadCollection ( TCollection *  obj, const TClass *  objClass  )

protected

read content of ROOT collection

Definition at line 1691 of file TBufferJSON.cxx.

JsonReadFastArray()

template<typename T >

void TBufferJSON::JsonReadFastArray ( T *  arr, Int_t  arrsize, bool  asstring = false  )

protected

Template method to read array from the JSON.

Definition at line 2772 of file TBufferJSON.cxx.

JsonReadObject()

void * TBufferJSON::JsonReadObject ( void *  obj, const TClass *  objClass = nullptr, TClass **  readClass = nullptr  )

protected

Read object from current JSON node.

Definition at line 1792 of file TBufferJSON.cxx.

JsonReadTObjectMembers()

void TBufferJSON::JsonReadTObjectMembers ( TObject *  tobj, void *  node = nullptr  )

protected

Read TObject data members from JSON.

Do not call TObject::Streamer() to avoid special tweaking of TBufferJSON interface

Definition at line 1999 of file TBufferJSON.cxx.

JsonSpecialClass()

Int_t TBufferJSON::JsonSpecialClass ( const TClass *  cl ) const

protected

return non-zero value when class has special handling in JSON it is TCollection (-130), TArray (100), TString (110), std::string (120) and STL containers (1..6)

Definition at line 1285 of file TBufferJSON.cxx.

JsonStartElement()

void TBufferJSON::JsonStartElement ( const TStreamerElement *  elem, const TClass *  base_class  )

protected

Start new class member in JSON structures.

Definition at line 1212 of file TBufferJSON.cxx.

JsonStartObjectWrite()

TJSONStackObj * TBufferJSON::JsonStartObjectWrite ( const TClass *  obj_class, TStreamerInfo *  info = nullptr  )

protected

Start object element with typeinfo.

Definition at line 1178 of file TBufferJSON.cxx.

JsonWriteArrayCompress()

template<typename T >

void TBufferJSON::JsonWriteArrayCompress ( const T *  vname, Int_t  arrsize, const char *  typname  )

protected

Definition at line 3054 of file TBufferJSON.cxx.

JsonWriteBasic() [1/13]

void TBufferJSON::JsonWriteBasic ( Bool_t  value )

protected

converts Bool_t to string and add to json value buffer

Definition at line 3989 of file TBufferJSON.cxx.

JsonWriteBasic() [2/13]

void TBufferJSON::JsonWriteBasic ( Char_t  value )

protected

converts Char_t to string and add to json value buffer

Definition at line 3909 of file TBufferJSON.cxx.

JsonWriteBasic() [3/13]

void TBufferJSON::JsonWriteBasic ( Double_t  value )

protected

converts Double_t to string and add to json value buffer

Definition at line 3973 of file TBufferJSON.cxx.

JsonWriteBasic() [4/13]

void TBufferJSON::JsonWriteBasic ( Float_t  value )

protected

converts Float_t to string and add to json value buffer

Definition at line 3957 of file TBufferJSON.cxx.

JsonWriteBasic() [5/13]

void TBufferJSON::JsonWriteBasic ( Int_t  value )

protected

converts Int_t to string and add to json value buffer

Definition at line 3929 of file TBufferJSON.cxx.

JsonWriteBasic() [6/13]

void TBufferJSON::JsonWriteBasic ( Long64_t  value )

protected

converts Long64_t to string and add to json value buffer

Definition at line 3949 of file TBufferJSON.cxx.

JsonWriteBasic() [7/13]

void TBufferJSON::JsonWriteBasic ( Long_t  value )

protected

converts Long_t to string and add to json value buffer

Definition at line 3939 of file TBufferJSON.cxx.

JsonWriteBasic() [8/13]

void TBufferJSON::JsonWriteBasic ( Short_t  value )

protected

converts Short_t to string and add to json value buffer

Definition at line 3919 of file TBufferJSON.cxx.

JsonWriteBasic() [9/13]

void TBufferJSON::JsonWriteBasic ( UChar_t  value )

protected

converts UChar_t to string and add to json value buffer

Definition at line 3997 of file TBufferJSON.cxx.

JsonWriteBasic() [10/13]

void TBufferJSON::JsonWriteBasic ( UInt_t  value )

protected

converts UInt_t to string and add to json value buffer

Definition at line 4017 of file TBufferJSON.cxx.

JsonWriteBasic() [11/13]

void TBufferJSON::JsonWriteBasic ( ULong64_t  value )

protected

converts ULong64_t to string and add to json value buffer

Definition at line 4037 of file TBufferJSON.cxx.

JsonWriteBasic() [12/13]

void TBufferJSON::JsonWriteBasic ( ULong_t  value )

protected

converts ULong_t to string and add to json value buffer

Definition at line 4027 of file TBufferJSON.cxx.

JsonWriteBasic() [13/13]

void TBufferJSON::JsonWriteBasic ( UShort_t  value )

protected

converts UShort_t to string and add to json value buffer

Definition at line 4007 of file TBufferJSON.cxx.

JsonWriteCollection()

void TBufferJSON::JsonWriteCollection ( TCollection *  obj, const TClass *  objClass  )

protected

store content of ROOT collection

Definition at line 1600 of file TBufferJSON.cxx.

JsonWriteConstChar()

void TBufferJSON::JsonWriteConstChar ( const char *  value, Int_t  len = -1, const char *  = nullptr  )

protected

writes string value, processing all kind of special characters

Definition at line 4045 of file TBufferJSON.cxx.

JsonWriteFastArray()

template<typename T >

void TBufferJSON::JsonWriteFastArray ( const T *  arr, Long64_t  arrsize, const char *  typname, void(TBufferJSON::*)(const T *, Int_t, const char *)  method  )

protected

Template method to write array of arbitrary dimensions Different methods can be used for store last array dimension - either JsonWriteArrayCompress<T>() or JsonWriteConstChar()

Note

Due to the current limit of the buffer size, the function aborts execution of the program in case of overflow. See https://github.com/root-project/root/issues/6734 for more details.

Definition at line 3278 of file TBufferJSON.cxx.

JsonWriteMember()

TString TBufferJSON::JsonWriteMember ( const void *  ptr, TDataMember *  member, TClass *  memberClass, Int_t  arraylen  )

protected

Convert single data member to JSON structures Returns string with converted member.

Definition at line 1007 of file TBufferJSON.cxx.

JsonWriteObject()

void TBufferJSON::JsonWriteObject ( const void *  obj, const TClass *  objClass, Bool_t  check_map = kTRUE  )

protected

Write object to buffer If object was written before, only pointer will be stored If check_map==kFALSE, object will be stored in any case and pointer will not be registered in the map.

Definition at line 1323 of file TBufferJSON.cxx.

PerformPostProcessing()

void TBufferJSON::PerformPostProcessing ( TJSONStackObj *  stack, const TClass *  obj_cl = nullptr  )

protected

Function is converts TObject and TString structures to more compact representation.

Definition at line 2351 of file TBufferJSON.cxx.

PopStack()

TJSONStackObj * TBufferJSON::PopStack ( )

protected

remove one level from stack

Definition at line 1145 of file TBufferJSON.cxx.

PushStack()

TJSONStackObj * TBufferJSON::PushStack ( Int_t  inclevel = 0, void *  readnode = nullptr  )

protected

add new level to the structures stack

Definition at line 1127 of file TBufferJSON.cxx.

ReadArray() [1/13]

Int_t TBufferJSON::ReadArray ( Bool_t *&  b )

finalvirtual

Read array of Bool_t from buffer.

Implements TBuffer.

Definition at line 2553 of file TBufferJSON.cxx.

ReadArray() [2/13]

Int_t TBufferJSON::ReadArray ( Char_t *&  c )

finalvirtual

Read array of Char_t from buffer.

Implements TBuffer.

Definition at line 2561 of file TBufferJSON.cxx.

ReadArray() [3/13]

Int_t TBufferJSON::ReadArray ( Double_t *&  d )

finalvirtual

Read array of Double_t from buffer.

Implements TBuffer.

Definition at line 2649 of file TBufferJSON.cxx.

ReadArray() [4/13]

Int_t TBufferJSON::ReadArray ( Float_t *&  f )

finalvirtual

Read array of Float_t from buffer.

Implements TBuffer.

Definition at line 2641 of file TBufferJSON.cxx.

ReadArray() [5/13]

Int_t TBufferJSON::ReadArray ( Int_t *&  i )

finalvirtual

Read array of Int_t from buffer.

Implements TBuffer.

Definition at line 2593 of file TBufferJSON.cxx.

ReadArray() [6/13]

Int_t TBufferJSON::ReadArray ( Long64_t *&  l )

finalvirtual

Read array of Long64_t from buffer.

Implements TBuffer.

Definition at line 2625 of file TBufferJSON.cxx.

ReadArray() [7/13]

Int_t TBufferJSON::ReadArray ( Long_t *&  l )

finalvirtual

Read array of Long_t from buffer.

Implements TBuffer.

Definition at line 2609 of file TBufferJSON.cxx.

ReadArray() [8/13]

Int_t TBufferJSON::ReadArray ( Short_t *&  h )

finalvirtual

Read array of Short_t from buffer.

Implements TBuffer.

Definition at line 2577 of file TBufferJSON.cxx.

ReadArray() [9/13]

Int_t TBufferJSON::ReadArray ( UChar_t *&  c )

finalvirtual

Read array of UChar_t from buffer.

Implements TBuffer.

Definition at line 2569 of file TBufferJSON.cxx.

ReadArray() [10/13]

Int_t TBufferJSON::ReadArray ( UInt_t *&  i )

finalvirtual

Read array of UInt_t from buffer.

Implements TBuffer.

Definition at line 2601 of file TBufferJSON.cxx.

ReadArray() [11/13]

Int_t TBufferJSON::ReadArray ( ULong64_t *&  l )

finalvirtual

Read array of ULong64_t from buffer.

Implements TBuffer.

Definition at line 2633 of file TBufferJSON.cxx.

ReadArray() [12/13]

Int_t TBufferJSON::ReadArray ( ULong_t *&  l )

finalvirtual

Read array of ULong_t from buffer.

Implements TBuffer.

Definition at line 2617 of file TBufferJSON.cxx.

ReadArray() [13/13]

Int_t TBufferJSON::ReadArray ( UShort_t *&  h )

finalvirtual

Read array of UShort_t from buffer.

Implements TBuffer.

Definition at line 2585 of file TBufferJSON.cxx.

ReadBaseClass()

void TBufferJSON::ReadBaseClass ( void *  start, TStreamerBase *  elem  )

finalvirtual

Read data of base class.

Reimplemented from TBufferText.

Definition at line 4101 of file TBufferJSON.cxx.

ReadBool()

void TBufferJSON::ReadBool ( Bool_t &  b )

finalvirtual

Reads Bool_t value from buffer.

Implements TBuffer.

Definition at line 3584 of file TBufferJSON.cxx.

ReadChar()

void TBufferJSON::ReadChar ( Char_t &  c )

finalvirtual

Reads Char_t value from buffer.

Implements TBuffer.

Definition at line 3592 of file TBufferJSON.cxx.

ReadCharP()

void TBufferJSON::ReadCharP ( Char_t *  c )

finalvirtual

Reads array of characters from buffer.

Implements TBuffer.

Definition at line 3702 of file TBufferJSON.cxx.

ReadCharStar()

void TBufferJSON::ReadCharStar ( char *&  s )

finalvirtual

Reads a char* string.

Implements TBuffer.

Definition at line 3728 of file TBufferJSON.cxx.

ReadClass()

TClass * TBufferJSON::ReadClass ( const TClass *  cl = nullptr, UInt_t *  objTag = nullptr  )

finalvirtual

suppressed function of TBuffer

Implements TBuffer.

Definition at line 2473 of file TBufferJSON.cxx.

ReadDouble()

void TBufferJSON::ReadDouble ( Double_t &  d )

finalvirtual

Reads Double_t value from buffer.

Implements TBuffer.

Definition at line 3690 of file TBufferJSON.cxx.

ReadFastArray() [1/15]

void TBufferJSON::ReadFastArray ( Bool_t *  b, Int_t  n  )

finalvirtual

read array of Bool_t from buffer

Implements TBuffer.

Definition at line 2853 of file TBufferJSON.cxx.

ReadFastArray() [2/15]

void TBufferJSON::ReadFastArray ( Char_t *  c, Int_t  n  )

finalvirtual

read array of Char_t from buffer

Implements TBuffer.

Definition at line 2861 of file TBufferJSON.cxx.

ReadFastArray() [3/15]

void TBufferJSON::ReadFastArray ( Double_t *  d, Int_t  n  )

finalvirtual

read array of Double_t from buffer

Implements TBuffer.

Definition at line 2957 of file TBufferJSON.cxx.

ReadFastArray() [4/15]

void TBufferJSON::ReadFastArray ( Float_t *  f, Int_t  n  )

finalvirtual

read array of Float_t from buffer

Implements TBuffer.

Definition at line 2949 of file TBufferJSON.cxx.

ReadFastArray() [5/15]

void TBufferJSON::ReadFastArray ( Int_t *  i, Int_t  n  )

finalvirtual

read array of Int_t from buffer

Implements TBuffer.

Definition at line 2901 of file TBufferJSON.cxx.

ReadFastArray() [6/15]

void TBufferJSON::ReadFastArray ( Long64_t *  l, Int_t  n  )

finalvirtual

read array of Long64_t from buffer

Implements TBuffer.

Definition at line 2933 of file TBufferJSON.cxx.

ReadFastArray() [7/15]

void TBufferJSON::ReadFastArray ( Long_t *  l, Int_t  n  )

finalvirtual

read array of Long_t from buffer

Implements TBuffer.

Definition at line 2917 of file TBufferJSON.cxx.

ReadFastArray() [8/15]

void TBufferJSON::ReadFastArray ( Short_t *  h, Int_t  n  )

finalvirtual

read array of Short_t from buffer

Implements TBuffer.

Definition at line 2885 of file TBufferJSON.cxx.

ReadFastArray() [9/15]

void TBufferJSON::ReadFastArray ( UChar_t *  c, Int_t  n  )

finalvirtual

read array of UChar_t from buffer

Implements TBuffer.

Definition at line 2877 of file TBufferJSON.cxx.

ReadFastArray() [10/15]

void TBufferJSON::ReadFastArray ( UInt_t *  i, Int_t  n  )

finalvirtual

read array of UInt_t from buffer

Implements TBuffer.

Definition at line 2909 of file TBufferJSON.cxx.

ReadFastArray() [11/15]

void TBufferJSON::ReadFastArray ( ULong64_t *  l, Int_t  n  )

finalvirtual

read array of ULong64_t from buffer

Implements TBuffer.

Definition at line 2941 of file TBufferJSON.cxx.

ReadFastArray() [12/15]

void TBufferJSON::ReadFastArray ( ULong_t *  l, Int_t  n  )

finalvirtual

read array of ULong_t from buffer

Implements TBuffer.

Definition at line 2925 of file TBufferJSON.cxx.

ReadFastArray() [13/15]

void TBufferJSON::ReadFastArray ( UShort_t *  h, Int_t  n  )

finalvirtual

read array of UShort_t from buffer

Implements TBuffer.

Definition at line 2893 of file TBufferJSON.cxx.

ReadFastArray() [14/15]

void TBufferJSON::ReadFastArray ( void **  startp, const TClass *  cl, Int_t  n = 1, Bool_t  isPreAlloc = kFALSE, TMemberStreamer *  s = nullptr, const TClass *  onFileClass = nullptr  )

finalvirtual

redefined here to avoid warning message from gcc

Implements TBuffer.

Definition at line 3008 of file TBufferJSON.cxx.

ReadFastArray() [15/15]

void TBufferJSON::ReadFastArray ( void *  start, const TClass *  cl, Int_t  n = 1, TMemberStreamer *  s = nullptr, const TClass *  onFileClass = nullptr  )

finalvirtual

Read an array of 'n' objects from the I/O buffer.

Stores the objects read starting at the address 'start'. The objects in the array are assume to be of class 'cl'. Copied code from TBufferFile

Implements TBuffer.

Definition at line 2968 of file TBufferJSON.cxx.

ReadFastArrayString()

void TBufferJSON::ReadFastArrayString ( Char_t *  c, Int_t  n  )

finalvirtual

read array of Char_t from buffer

Implements TBuffer.

Definition at line 2869 of file TBufferJSON.cxx.

ReadFloat()

void TBufferJSON::ReadFloat ( Float_t &  f )

finalvirtual

Reads Float_t value from buffer.

Implements TBuffer.

Definition at line 3678 of file TBufferJSON.cxx.

ReadInt()

void TBufferJSON::ReadInt ( Int_t &  i )

finalvirtual

Reads Int_t value from buffer.

Implements TBuffer.

Definition at line 3627 of file TBufferJSON.cxx.

ReadLong()

void TBufferJSON::ReadLong ( Long_t &  l )

finalvirtual

Reads Long_t value from buffer.

Implements TBuffer.

Definition at line 3646 of file TBufferJSON.cxx.

ReadLong64()

void TBufferJSON::ReadLong64 ( Long64_t &  l )

finalvirtual

Reads Long64_t value from buffer.

Implements TBuffer.

Definition at line 3662 of file TBufferJSON.cxx.

ReadObjectAny()

void * TBufferJSON::ReadObjectAny ( const TClass *  clCast )

finalvirtual

Read object from buffer. Only used from TBuffer.

Implements TBuffer.

Definition at line 2517 of file TBufferJSON.cxx.

ReadShort()

void TBufferJSON::ReadShort ( Short_t &  s )

finalvirtual

Reads Short_t value from buffer.

Implements TBuffer.

Definition at line 3611 of file TBufferJSON.cxx.

ReadStaticArray() [1/13]

Int_t TBufferJSON::ReadStaticArray ( Bool_t *  b )

finalvirtual

Read array of Bool_t from buffer.

Implements TBuffer.

Definition at line 2667 of file TBufferJSON.cxx.

ReadStaticArray() [2/13]

Int_t TBufferJSON::ReadStaticArray ( Char_t *  c )

finalvirtual

Read array of Char_t from buffer.

Implements TBuffer.

Definition at line 2675 of file TBufferJSON.cxx.

ReadStaticArray() [3/13]

Int_t TBufferJSON::ReadStaticArray ( Double_t *  d )

finalvirtual

Read array of Double_t from buffer.

Implements TBuffer.

Definition at line 2763 of file TBufferJSON.cxx.

ReadStaticArray() [4/13]

Int_t TBufferJSON::ReadStaticArray ( Float_t *  f )

finalvirtual

Read array of Float_t from buffer.

Implements TBuffer.

Definition at line 2755 of file TBufferJSON.cxx.

ReadStaticArray() [5/13]

Int_t TBufferJSON::ReadStaticArray ( Int_t *  i )

finalvirtual

Read array of Int_t from buffer.

Implements TBuffer.

Definition at line 2707 of file TBufferJSON.cxx.

ReadStaticArray() [6/13]

Int_t TBufferJSON::ReadStaticArray ( Long64_t *  l )

finalvirtual

Read array of Long64_t from buffer.

Implements TBuffer.

Definition at line 2739 of file TBufferJSON.cxx.

ReadStaticArray() [7/13]

Int_t TBufferJSON::ReadStaticArray ( Long_t *  l )

finalvirtual

Read array of Long_t from buffer.

Implements TBuffer.

Definition at line 2723 of file TBufferJSON.cxx.

ReadStaticArray() [8/13]

Int_t TBufferJSON::ReadStaticArray ( Short_t *  h )

finalvirtual

Read array of Short_t from buffer.

Implements TBuffer.

Definition at line 2691 of file TBufferJSON.cxx.

ReadStaticArray() [9/13]

Int_t TBufferJSON::ReadStaticArray ( UChar_t *  c )

finalvirtual

Read array of UChar_t from buffer.

Implements TBuffer.

Definition at line 2683 of file TBufferJSON.cxx.

ReadStaticArray() [10/13]

Int_t TBufferJSON::ReadStaticArray ( UInt_t *  i )

finalvirtual

Read array of UInt_t from buffer.

Implements TBuffer.

Definition at line 2715 of file TBufferJSON.cxx.

ReadStaticArray() [11/13]

Int_t TBufferJSON::ReadStaticArray ( ULong64_t *  l )

finalvirtual

Read array of ULong64_t from buffer.

Implements TBuffer.

Definition at line 2747 of file TBufferJSON.cxx.

ReadStaticArray() [12/13]

Int_t TBufferJSON::ReadStaticArray ( ULong_t *  l )

finalvirtual

Read array of ULong_t from buffer.

Implements TBuffer.

Definition at line 2731 of file TBufferJSON.cxx.

ReadStaticArray() [13/13]

Int_t TBufferJSON::ReadStaticArray ( UShort_t *  h )

finalvirtual

Read array of UShort_t from buffer.

Implements TBuffer.

Definition at line 2699 of file TBufferJSON.cxx.

ReadStdString() [1/3]

virtual void TBuffer::ReadStdString ( std::string &  s )

inlinevirtual

Reimplemented from TBuffer.

Definition at line 292 of file TBuffer.h.

ReadStdString() [2/3]

void TBufferJSON::ReadStdString ( std::string *  s )

finalvirtual

Reads a std::string.

Implements TBuffer.

Definition at line 3720 of file TBufferJSON.cxx.

ReadStdString() [3/3]

virtual void TBuffer::ReadStdString ( std::string *  s )

virtual

Implements TBuffer.

ReadTString()

void TBufferJSON::ReadTString ( TString &  s )

finalvirtual

Reads a TString.

Implements TBuffer.

Definition at line 3710 of file TBufferJSON.cxx.

ReadUChar()

void TBufferJSON::ReadUChar ( UChar_t &  c )

finalvirtual

Reads UChar_t value from buffer.

Implements TBuffer.

Definition at line 3603 of file TBufferJSON.cxx.

ReadUInt()

void TBufferJSON::ReadUInt ( UInt_t &  i )

finalvirtual

Reads UInt_t value from buffer.

Implements TBuffer.

Definition at line 3638 of file TBufferJSON.cxx.

ReadULong()

void TBufferJSON::ReadULong ( ULong_t &  l )

finalvirtual

Reads ULong_t value from buffer.

Implements TBuffer.

Definition at line 3654 of file TBufferJSON.cxx.

ReadULong64()

void TBufferJSON::ReadULong64 ( ULong64_t &  l )

finalvirtual

Reads ULong64_t value from buffer.

Implements TBuffer.

Definition at line 3670 of file TBufferJSON.cxx.

ReadUShort()

void TBufferJSON::ReadUShort ( UShort_t &  s )

finalvirtual

Reads UShort_t value from buffer.

Implements TBuffer.

Definition at line 3619 of file TBufferJSON.cxx.

ReadVersion()

Version_t TBufferJSON::ReadVersion ( UInt_t *  start = nullptr, UInt_t *  bcnt = nullptr, const TClass *  cl = nullptr  )

finalvirtual

read version value from buffer

Implements TBuffer.

Definition at line 2486 of file TBufferJSON.cxx.

RestoreObject()

void * TBufferJSON::RestoreObject	(	const char *	str,
		TClass **	cl
	)

Read object from JSON In class pointer (if specified) read class is returned One must specify expected object class, if it is TArray or STL container.

Definition at line 946 of file TBufferJSON.cxx.

SetCompact()

void TBufferJSON::SetCompact

(

int

level

)

Set level of space/newline/array compression Lower digit of compact parameter define formatting rules.

• kNoCompress = 0 - no any compression, human-readable form
• kNoIndent = 1 - remove indentation spaces in the begin of each line
• kNoNewLine = 2 - remove also newlines
• kNoSpaces = 3 - exclude all spaces and new lines

Second digit of compact parameter defines algorithm for arrays compression

• 0 - no compression, standard JSON array
• kZeroSuppression = 10 - exclude leading and trailing zeros
• kSameSuppression = 20 - check values repetition and empty gaps

Third digit defines usage of typeinfo

• kSkipTypeInfo = 100 - "_typename" field will be skipped, reading by ROOT or JSROOT may be impossible

Definition at line 554 of file TBufferJSON.cxx.

SetSkipClassInfo()

void TBufferJSON::SetSkipClassInfo

(

const TClass *

cl

)

Specify class which typename will not be stored in JSON Several classes can be configured To exclude typeinfo for all classes, call TBufferJSON::SetTypenameTag("")

Definition at line 605 of file TBufferJSON.cxx.

SetStreamerElementNumber()

void TBufferJSON::SetStreamerElementNumber ( TStreamerElement *  elem, Int_t  comp_type  )

finalvirtual

Function is called from TStreamerInfo WriteBuffer and ReadBuffer functions and add/verify next element of json structure This calls allows separate data, correspondent to one class member, from another.

Implements TBuffer.

Definition at line 2112 of file TBufferJSON.cxx.

SetTypenameTag()

void TBufferJSON::SetTypenameTag

(

const char *

tag = "_typename"

)

Configures _typename tag in JSON structures By default "_typename" field in JSON structures used to store class information One can specify alternative tag like "$typename" or "xy", but such JSON can not be correctly used in JSROOT If empty string is provided, class information will not be stored.

Definition at line 578 of file TBufferJSON.cxx.

SetTypeversionTag()

void TBufferJSON::SetTypeversionTag

(

const char *

tag = nullptr

)

Configures _typeversion tag in JSON One can specify name of the JSON tag like "_typeversion" or "$tv" which will be used to store class version Such tag can be used to correctly recover objects from JSON If empty string is provided (default), class version will not be stored.

Definition at line 592 of file TBufferJSON.cxx.

SkipObjectAny()

void TBufferJSON::SkipObjectAny ( )

finalvirtual

Skip any kind of object from buffer.

Implements TBuffer.

Definition at line 2528 of file TBufferJSON.cxx.

Stack()

TJSONStackObj * TBufferJSON::Stack ( )

inlineprotected

Definition at line 257 of file TBufferJSON.h.

StoreObject()

TString TBufferJSON::StoreObject	(	const void *	obj,
		const TClass *	cl
	)

Store provided object as JSON structure Allows to configure different TBufferJSON properties before converting object into JSON Actual object class must be specified here Method can be safely called once - after that TBufferJSON instance must be destroyed Code should look like:

auto obj = new UserClass(); TBufferJSON buf; buf.SetCompact(TBufferJSON::kNoSpaces); // change any other settings in TBufferJSON auto json = buf.StoreObject(obj, TClass::GetClass<UserClass>());

Definition at line 700 of file TBufferJSON.cxx.

Streamer()

void TBufferJSON::Streamer ( TBuffer &  R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TBufferIO.

StreamerNVirtual()

void TBufferJSON::StreamerNVirtual ( TBuffer &  ClassDef_StreamerNVirtual_b )

inline

Definition at line 332 of file TBufferJSON.h.

StreamObject() [1/4]

void TBufferText::StreamObject ( TObject *  obj )

overridevirtual

Implements TBuffer.

Definition at line 33 of file TBufferText.cxx.

StreamObject() [2/4]

void TBufferText::StreamObject ( void *  obj, const char *  className, const TClass *  onFileClass = nullptr  )

overridevirtual

stream object to/from buffer

Implements TBuffer.

Definition at line 32 of file TBufferText.cxx.

StreamObject() [3/4]

void TBufferText::StreamObject ( void *  obj, const std::type_info &  typeinfo, const TClass *  onFileClass = nullptr  )

overridevirtual

stream object to/from buffer

Implements TBuffer.

Definition at line 31 of file TBufferText.cxx.

StreamObject() [4/4]

void TBufferJSON::StreamObject ( void *  obj, const TClass *  cl, const TClass *  onFileClass = nullptr  )

finalvirtual

stream object to/from buffer

Implements TBuffer.

Definition at line 3561 of file TBufferJSON.cxx.

ToJSON()

template<class T >

static TString TBufferJSON::ToJSON ( const T *  obj, Int_t  compact = 0, const char *  member_name = nullptr  )

inlinestatic

Definition at line 75 of file TBufferJSON.h.

WorkWithClass()

void TBufferJSON::WorkWithClass ( TStreamerInfo *  info, const TClass *  cl = nullptr  )

protected

Prepares buffer to stream data of specified class.

Definition at line 2035 of file TBufferJSON.cxx.

WorkWithElement()

void TBufferJSON::WorkWithElement ( TStreamerElement *  elem, Int_t    )

protected

This is call-back from streamer which indicates that class member will be streamed Name of element used in JSON.

Definition at line 2125 of file TBufferJSON.cxx.

WriteArray() [1/13]

void TBufferJSON::WriteArray ( const Bool_t *  b, Int_t  n  )

finalvirtual

Write array of Bool_t to buffer.

Implements TBuffer.

Definition at line 3157 of file TBufferJSON.cxx.

WriteArray() [2/13]

void TBufferJSON::WriteArray ( const Char_t *  c, Int_t  n  )

finalvirtual

Write array of Char_t to buffer.

Implements TBuffer.

Definition at line 3166 of file TBufferJSON.cxx.

WriteArray() [3/13]

void TBufferJSON::WriteArray ( const Double_t *  d, Int_t  n  )

finalvirtual

Write array of Double_t to buffer.

Implements TBuffer.

Definition at line 3265 of file TBufferJSON.cxx.

WriteArray() [4/13]

void TBufferJSON::WriteArray ( const Float_t *  f, Int_t  n  )

finalvirtual

Write array of Float_t to buffer.

Implements TBuffer.

Definition at line 3256 of file TBufferJSON.cxx.

WriteArray() [5/13]

void TBufferJSON::WriteArray ( const Int_t *  i, Int_t  n  )

finalvirtual

Write array of Int_ to buffer.

Implements TBuffer.

Definition at line 3202 of file TBufferJSON.cxx.

WriteArray() [6/13]

void TBufferJSON::WriteArray ( const Long64_t *  l, Int_t  n  )

finalvirtual

Write array of Long64_t to buffer.

Implements TBuffer.

Definition at line 3238 of file TBufferJSON.cxx.

WriteArray() [7/13]

void TBufferJSON::WriteArray ( const Long_t *  l, Int_t  n  )

finalvirtual

Write array of Long_t to buffer.

Implements TBuffer.

Definition at line 3220 of file TBufferJSON.cxx.

WriteArray() [8/13]

void TBufferJSON::WriteArray ( const Short_t *  h, Int_t  n  )

finalvirtual

Write array of Short_t to buffer.

Implements TBuffer.

Definition at line 3184 of file TBufferJSON.cxx.

WriteArray() [9/13]

void TBufferJSON::WriteArray ( const UChar_t *  c, Int_t  n  )

finalvirtual

Write array of UChar_t to buffer.

Implements TBuffer.

Definition at line 3175 of file TBufferJSON.cxx.

WriteArray() [10/13]

void TBufferJSON::WriteArray ( const UInt_t *  i, Int_t  n  )

finalvirtual

Write array of UInt_t to buffer.

Implements TBuffer.

Definition at line 3211 of file TBufferJSON.cxx.

WriteArray() [11/13]

void TBufferJSON::WriteArray ( const ULong64_t *  l, Int_t  n  )

finalvirtual

Write array of ULong64_t to buffer.

Implements TBuffer.

Definition at line 3247 of file TBufferJSON.cxx.

WriteArray() [12/13]

void TBufferJSON::WriteArray ( const ULong_t *  l, Int_t  n  )

finalvirtual

Write array of ULong_t to buffer.

Implements TBuffer.

Definition at line 3229 of file TBufferJSON.cxx.

WriteArray() [13/13]

void TBufferJSON::WriteArray ( const UShort_t *  h, Int_t  n  )

finalvirtual

Write array of UShort_t to buffer.

Implements TBuffer.

Definition at line 3193 of file TBufferJSON.cxx.

WriteBool()

void TBufferJSON::WriteBool ( Bool_t  b )

finalvirtual

Writes Bool_t value to buffer.

Implements TBuffer.

Definition at line 3749 of file TBufferJSON.cxx.

WriteChar()

void TBufferJSON::WriteChar ( Char_t  c )

finalvirtual

Writes Char_t value to buffer.

Implements TBuffer.

Definition at line 3758 of file TBufferJSON.cxx.

WriteCharP()

void TBufferJSON::WriteCharP ( const Char_t *  c )

finalvirtual

Writes array of characters to buffer.

Implements TBuffer.

Definition at line 3866 of file TBufferJSON.cxx.

WriteCharStar()

void TBufferJSON::WriteCharStar ( char *  s )

finalvirtual

Writes a char*.

Implements TBuffer.

Definition at line 3899 of file TBufferJSON.cxx.

WriteClass()

void TBufferJSON::WriteClass ( const TClass *  cl )

finalvirtual

suppressed function of TBuffer

Implements TBuffer.

Definition at line 2481 of file TBufferJSON.cxx.

WriteDouble()

void TBufferJSON::WriteDouble ( Double_t  d )

finalvirtual

Writes Double_t value to buffer.

Implements TBuffer.

Definition at line 3857 of file TBufferJSON.cxx.

WriteFastArray() [1/15]

void TBufferJSON::WriteFastArray ( const Bool_t *  b, Long64_t  n  )

finalvirtual

Write array of Bool_t to buffer.

Implements TBuffer.

Definition at line 3322 of file TBufferJSON.cxx.

WriteFastArray() [2/15]

void TBufferJSON::WriteFastArray ( const Char_t *  c, Long64_t  n  )

finalvirtual

Write array of Char_t to buffer.

Normally written as JSON string, but if string includes \0 in the middle or some special characters, uses regular array. From array size 1000 it will be automatically converted into base64 coding

Implements TBuffer.

Definition at line 3334 of file TBufferJSON.cxx.

WriteFastArray() [3/15]

void TBufferJSON::WriteFastArray ( const Double_t *  d, Long64_t  n  )

finalvirtual

Write array of Double_t to buffer.

Implements TBuffer.

Definition at line 3444 of file TBufferJSON.cxx.

WriteFastArray() [4/15]

void TBufferJSON::WriteFastArray ( const Float_t *  f, Long64_t  n  )

finalvirtual

Write array of Float_t to buffer.

Implements TBuffer.

Definition at line 3436 of file TBufferJSON.cxx.

WriteFastArray() [5/15]

void TBufferJSON::WriteFastArray ( const Int_t *  i, Long64_t  n  )

finalvirtual

Write array of Int_t to buffer.

Implements TBuffer.

Definition at line 3388 of file TBufferJSON.cxx.

WriteFastArray() [6/15]

void TBufferJSON::WriteFastArray ( const Long64_t *  l, Long64_t  n  )

finalvirtual

Write array of Long64_t to buffer.

Implements TBuffer.

Definition at line 3420 of file TBufferJSON.cxx.

WriteFastArray() [7/15]

void TBufferJSON::WriteFastArray ( const Long_t *  l, Long64_t  n  )

finalvirtual

Write array of Long_t to buffer.

Implements TBuffer.

Definition at line 3404 of file TBufferJSON.cxx.

WriteFastArray() [8/15]

void TBufferJSON::WriteFastArray ( const Short_t *  h, Long64_t  n  )

finalvirtual

Write array of Short_t to buffer.

Implements TBuffer.

Definition at line 3372 of file TBufferJSON.cxx.

WriteFastArray() [9/15]

void TBufferJSON::WriteFastArray ( const UChar_t *  c, Long64_t  n  )

finalvirtual

Write array of UChar_t to buffer.

Implements TBuffer.

Definition at line 3364 of file TBufferJSON.cxx.

WriteFastArray() [10/15]

void TBufferJSON::WriteFastArray ( const UInt_t *  i, Long64_t  n  )

finalvirtual

Write array of UInt_t to buffer.

Implements TBuffer.

Definition at line 3396 of file TBufferJSON.cxx.

WriteFastArray() [11/15]

void TBufferJSON::WriteFastArray ( const ULong64_t *  l, Long64_t  n  )

finalvirtual

Write array of ULong64_t to buffer.

Implements TBuffer.

Definition at line 3428 of file TBufferJSON.cxx.

WriteFastArray() [12/15]

void TBufferJSON::WriteFastArray ( const ULong_t *  l, Long64_t  n  )

finalvirtual

Write array of ULong_t to buffer.

Implements TBuffer.

Definition at line 3412 of file TBufferJSON.cxx.

WriteFastArray() [13/15]

void TBufferJSON::WriteFastArray ( const UShort_t *  h, Long64_t  n  )

finalvirtual

Write array of UShort_t to buffer.

Implements TBuffer.

Definition at line 3380 of file TBufferJSON.cxx.

WriteFastArray() [14/15]

Int_t TBufferJSON::WriteFastArray ( void **  startp, const TClass *  cl, Long64_t  n = 1, Bool_t  isPreAlloc = kFALSE, TMemberStreamer *  s = nullptr  )

finalvirtual

Recall TBuffer function to avoid gcc warning message.

Implements TBuffer.

Definition at line 3505 of file TBufferJSON.cxx.

WriteFastArray() [15/15]

void TBufferJSON::WriteFastArray ( void *  start, const TClass *  cl, Long64_t  n = 1, TMemberStreamer *  s = nullptr  )

finalvirtual

Recall TBuffer function to avoid gcc warning message.

Implements TBuffer.

Definition at line 3452 of file TBufferJSON.cxx.

WriteFastArrayString()

void TBufferJSON::WriteFastArrayString ( const Char_t *  c, Long64_t  n  )

finalvirtual

Write array of Char_t to buffer.

Implements TBuffer.

Definition at line 3356 of file TBufferJSON.cxx.

WriteFloat()

void TBufferJSON::WriteFloat ( Float_t  f )

finalvirtual

Writes Float_t value to buffer.

Implements TBuffer.

Definition at line 3848 of file TBufferJSON.cxx.

WriteInt()

void TBufferJSON::WriteInt ( Int_t  i )

finalvirtual

Writes Int_t value to buffer.

Implements TBuffer.

Definition at line 3794 of file TBufferJSON.cxx.

WriteLong()

void TBufferJSON::WriteLong ( Long_t  l )

finalvirtual

Writes Long_t value to buffer.

Implements TBuffer.

Definition at line 3812 of file TBufferJSON.cxx.

WriteLong64()

void TBufferJSON::WriteLong64 ( Long64_t  l )

finalvirtual

Writes Long64_t value to buffer.

Implements TBuffer.

Definition at line 3830 of file TBufferJSON.cxx.

WriteObjectClass()

void TBufferJSON::WriteObjectClass ( const void *  actualObjStart, const TClass *  actualClass, Bool_t  cacheReuse  )

finalprotectedvirtual

Write object to buffer. Only used from TBuffer.

Implements TBufferIO.

Definition at line 2533 of file TBufferJSON.cxx.

WriteShort()

void TBufferJSON::WriteShort ( Short_t  s )

finalvirtual

Writes Short_t value to buffer.

Implements TBuffer.

Definition at line 3776 of file TBufferJSON.cxx.

WriteStdString() [1/3]

void TBufferJSON::WriteStdString ( const std::string *  s )

finalvirtual

Writes a std::string.

Implements TBuffer.

Definition at line 3886 of file TBufferJSON.cxx.

WriteStdString() [2/3]

virtual void TBuffer::WriteStdString ( const std::string *  s )

virtual

Implements TBuffer.

WriteStdString() [3/3]

virtual void TBuffer::WriteStdString ( std::string &  s )

inlinevirtual

Reimplemented from TBuffer.

Definition at line 312 of file TBuffer.h.

WriteTString()

void TBufferJSON::WriteTString ( const TString &  s )

finalvirtual

Writes a TString.

Implements TBuffer.

Definition at line 3876 of file TBufferJSON.cxx.

WriteUChar()

void TBufferJSON::WriteUChar ( UChar_t  c )

finalvirtual

Writes UChar_t value to buffer.

Implements TBuffer.

Definition at line 3767 of file TBufferJSON.cxx.

WriteUInt()

void TBufferJSON::WriteUInt ( UInt_t  i )

finalvirtual

Writes UInt_t value to buffer.

Implements TBuffer.

Definition at line 3803 of file TBufferJSON.cxx.

WriteULong()

void TBufferJSON::WriteULong ( ULong_t  l )

finalvirtual

Writes ULong_t value to buffer.

Implements TBuffer.

Definition at line 3821 of file TBufferJSON.cxx.

WriteULong64()

void TBufferJSON::WriteULong64 ( ULong64_t  l )

finalvirtual

Writes ULong64_t value to buffer.

Implements TBuffer.

Definition at line 3839 of file TBufferJSON.cxx.

WriteUShort()

void TBufferJSON::WriteUShort ( UShort_t  s )

finalvirtual

Writes UShort_t value to buffer.

Implements TBuffer.

Definition at line 3785 of file TBufferJSON.cxx.

WriteVersion()

UInt_t TBufferJSON::WriteVersion ( const TClass *  cl, Bool_t  useBcnt = kFALSE  )

finalvirtual

Ignored in TBufferJSON.

Implements TBuffer.

Definition at line 2509 of file TBufferJSON.cxx.

Member Data Documentation

fArrayCompact

Int_t TBufferJSON::fArrayCompact {0}

protected

! 0 - no array compression, 1 - exclude leading/trailing zeros, 2 - check value repetition

Definition at line 325 of file TBufferJSON.h.

fArraySepar

TString TBufferJSON::fArraySepar

protected

! depending from compression level, ", " or ","

Definition at line 326 of file TBufferJSON.h.

fCompact

Int_t TBufferJSON::fCompact {0}

protected

! 0 - no any compression, 1 - no spaces in the begin, 2 - no new lines, 3 - no spaces at all

Definition at line 322 of file TBufferJSON.h.

fJsonrCnt

unsigned TBufferJSON::fJsonrCnt {0}

protected

! counter for all objects, used for referencing

Definition at line 320 of file TBufferJSON.h.

fMapAsObject

Bool_t TBufferJSON::fMapAsObject {kFALSE}

protected

! when true, std::map will be converted into JSON object

Definition at line 323 of file TBufferJSON.h.

fNumericLocale

TString TBufferJSON::fNumericLocale

protected

! stored value of setlocale(LC_NUMERIC), which should be recovered at the end

Definition at line 327 of file TBufferJSON.h.

fOutBuffer

TString TBufferJSON::fOutBuffer

protected

! main output buffer for json code

Definition at line 317 of file TBufferJSON.h.

fOutput

TString* TBufferJSON::fOutput {nullptr}

protected

! current output buffer for json code

Definition at line 318 of file TBufferJSON.h.

fSemicolon

TString TBufferJSON::fSemicolon

protected

! depending from compression level, " : " or ":"

Definition at line 324 of file TBufferJSON.h.

fSkipClasses

std::vector<const TClass *> TBufferJSON::fSkipClasses

protected

! list of classes, which class info is not stored

Definition at line 330 of file TBufferJSON.h.

fStack

std::deque<std::unique_ptr<TJSONStackObj> > TBufferJSON::fStack

protected

! hierarchy of currently streamed element

Definition at line 321 of file TBufferJSON.h.

fTypeNameTag

TString TBufferJSON::fTypeNameTag

protected

! JSON member used for storing class name, when empty - no class name will be stored

Definition at line 328 of file TBufferJSON.h.

fTypeVersionTag

TString TBufferJSON::fTypeVersionTag

protected

! JSON member used to store class version, default empty

Definition at line 329 of file TBufferJSON.h.

fValue

TString TBufferJSON::fValue

protected

! buffer for current value

Definition at line 319 of file TBufferJSON.h.

Libraries for TBufferJSON:

---

The documentation for this class was generated from the following files:

• io/io/inc/TBufferJSON.h
• io/io/src/TBufferJSON.cxx