Basic data type descriptor (datatype information is obtained from CINT).

This class describes the attributes of type definitions (typedef's). The TROOT class contains a list of all currently defined types (accessible via TROOT::GetListOfTypes()).

Definition at line 44 of file TDataType.h.

Public Member Functions
	TDataType (const char *typenam)
	Constructor for basic data types, like "char", "unsigned char", etc.

	TDataType (TypedefInfo_t *info=nullptr)
	Default TDataType ctor.

virtual	~TDataType ()
	TDataType dtor deletes adopted CINT TypedefInfo object.

const char *	AsString (void *buf) const
	Return string containing value in buffer formatted according to the basic data type.

const char *	GetFullTypeName () const
	Get full type description of typedef, e,g.: "class TDirectory*".

Int_t	GetType () const

TString	GetTypeName ()
	Get basic type of typedef, e,g.: "class TDirectory*" -> "TDirectory".

TClass *	IsA () const override

Long_t	Property () const override
	Get property description word. For meaning of bits see EProperty.

Int_t	Size () const
	Get size of basic typedef'ed type.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TDictionary
	TDictionary ()

	TDictionary (const char *name)

	TDictionary (const TDictionary &dict)

virtual	~TDictionary ()

void	CreateAttributeMap ()

TDictAttributeMap *	GetAttributeMap () const

TClass *	IsA () const override

TDictionary &	operator= (const TDictionary &other)

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

void	Clear (Option_t *option="") override
	Set name and title to empty strings ("").

TObject *	Clone (const char *newname="") const override
	Make a clone of an object using the Streamer facility.

Int_t	Compare (const TObject *obj) const override
	Compare two TNamed objects.

void	Copy (TObject &named) const override
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

const char *	GetName () const override
	Returns name of object.

const char *	GetTitle () const override
	Returns title of object.

ULong_t	Hash () const override
	Return hash value for this object.

TClass *	IsA () const override

Bool_t	IsSortable () const override

void	ls (Option_t *option="") const override
	List TNamed name and title.

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.

void	Print (Option_t *option="") const override
	Print TNamed name and title.

virtual void	SetName (const char *name)
	Set the name of the TNamed.

virtual void	SetNameTitle (const char name, const char title)
	Set all the TNamed parameters (name and title).

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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
	Call this function within a function that you don't want to define as purely virtual, in order not to force all users deriving from that class to implement that maybe (on their side) unused function; but at the same time, emit a run-time warning if they try to call it, telling that it is not implemented in the derived class: action must thus be taken on the user side to override it.

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	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 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 UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

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

R__ALWAYS_INLINE Bool_t	IsZombie () const

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 Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

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.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Static Public Member Functions
static void	AddBuiltins (TCollection *types)
	Create the TDataType objects for builtins.

static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static TDataType *	GetDataType (EDataType type)
	Given a EDataType type, get the TDataType* that represents it.

static EDataType	GetType (const std::type_info &typeinfo)
	Set type id depending on name.

static const char *	GetTypeName (EDataType type)
	Return the name of the type.

Static Public Member Functions inherited from TDictionary
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static TDictionary *	GetDictionary (const char *name)
	Retrieve the type (class, fundamental type, typedef etc) named "name".

static TDictionary *	GetDictionary (const std::type_info &typeinfo)

static bool	WantsRegularMembers (EMemberSelection sel)

static bool	WantsUsingDecls (EMemberSelection sel)

Static Public Member Functions inherited from TNamed
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

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
	TDataType (const TDataType &)
	copy constructor

TDataType &	operator= (const TDataType &)
	assignment operator

Protected Member Functions inherited from TDictionary
Bool_t	UpdateInterpreterStateMarker ()
	the Cling ID of the transaction that last updated the object

Protected Member Functions inherited from TNamed
void	SavePrimitiveNameTitle (std::ostream &out, const char *variable_name)
	Save object name and title into the output stream "out".

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 ()

Private Member Functions
void	CheckInfo ()
	Refresh the underlying information.

void	SetType (const char *name)
	Set type id depending on name.

Private Attributes
TypedefInfo_t *	fInfo

Long_t	fProperty

Int_t	fSize
	pointer to CINT typedef info

TString	fTrueName

EDataType	fType

Int_t	fTypeNameIdx

Int_t	fTypeNameLen

Static Private Attributes
static TDataType *	fgBuiltins [kNumDataTypes] = {nullptr}

Additional Inherited Members
Public Types inherited from TDictionary
typedef const void *	DeclId_t

enum class	EMemberSelection { kNoUsingDecls , kOnlyUsingDecls , kAlsoUsingDecls }
	Kinds of members to include in lists. More...

enum	ESTLType { kNone = ROOT::kNotSTL , kVector = ROOT::kSTLvector , kList = ROOT::kSTLlist , kForwardlist = ROOT::kSTLforwardlist , kDeque = ROOT::kSTLdeque , kMap = ROOT::kSTLmap , kMultimap = ROOT::kSTLmultimap , kSet = ROOT::kSTLset , kMultiset = ROOT::kSTLmultiset , kUnorderedSet = ROOT::kSTLunorderedset , kUnorderedMultiset = ROOT::kSTLunorderedmultiset , kUnorderedMap = ROOT::kSTLunorderedmap , kUnorderedMultimap = ROOT::kSTLunorderedmultimap , kBitset = ROOT::kSTLbitset }

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 )) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

Static Protected Member Functions inherited from TObject
static void	SavePrimitiveConstructor (std::ostream &out, TClass cl, const char variable_name, const char *constructor_agrs="", Bool_t empty_line=kTRUE)
	Save object constructor in the output stream "out".

static void	SavePrimitiveDraw (std::ostream &out, const char variable_name, Option_t option=nullptr)
	Save invocation of primitive Draw() method Skipped if option contains "nodraw" string.

static TString	SavePrimitiveVector (std::ostream &out, const char prefix, Int_t len, Double_t arr, Bool_t empty_line=kFALSE)
	Save array in the output stream "out" as vector.

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

#include <TDataType.h>

Inheritance diagram for TDataType:

[legend]

Constructor & Destructor Documentation

◆ TDataType() [1/3]

TDataType::TDataType ( const TDataType & dt )

protected

copy constructor

Definition at line 72 of file TDataType.cxx.

◆ TDataType() [2/3]

TDataType::TDataType ( TypedefInfo_t * info = nullptr )

Default TDataType ctor.

TDataTypes are constructed in TROOT via a call to TCling::UpdateListOfTypes().

Definition at line 36 of file TDataType.cxx.

◆ TDataType() [3/3]

TDataType::TDataType ( const char * typenam )

Constructor for basic data types, like "char", "unsigned char", etc.

Definition at line 59 of file TDataType.cxx.

◆ ~TDataType()

TDataType::~TDataType ( )

virtual

TDataType dtor deletes adopted CINT TypedefInfo object.

Definition at line 105 of file TDataType.cxx.

Member Function Documentation

◆ AddBuiltins()

void TDataType::AddBuiltins ( TCollection * types )

static

Create the TDataType objects for builtins.

Definition at line 417 of file TDataType.cxx.

◆ AsString()

const char * TDataType::AsString ( void * buf ) const

Return string containing value in buffer formatted according to the basic data type.

The result needs to be used or copied immediately.

Definition at line 235 of file TDataType.cxx.

◆ CheckInfo()

void TDataType::CheckInfo ( )

private

Refresh the underlying information.

Definition at line 384 of file TDataType.cxx.

◆ Class()

static TClass * TDataType::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TDataType::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TDataType::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 79 of file TDataType.h.

◆ DeclFileName()

static const char * TDataType::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 79 of file TDataType.h.

◆ GetDataType()

TDataType * TDataType::GetDataType ( EDataType type )

static

Given a EDataType type, get the TDataType* that represents it.

Definition at line 451 of file TDataType.cxx.

◆ GetFullTypeName()

const char * TDataType::GetFullTypeName ( ) const

Get full type description of typedef, e,g.: "class TDirectory*".

Definition at line 175 of file TDataType.cxx.

◆ GetType() [1/2]

Int_t TDataType::GetType ( ) const

inline

Definition at line 68 of file TDataType.h.

◆ GetType() [2/2]

EDataType TDataType::GetType ( const std::type_info & typeinfo )

static

Set type id depending on name.

Definition at line 189 of file TDataType.cxx.

◆ GetTypeName() [1/2]

TString TDataType::GetTypeName ( )

Get basic type of typedef, e,g.: "class TDirectory*" -> "TDirectory".

Result needs to be used or copied immediately.

Definition at line 149 of file TDataType.cxx.

◆ GetTypeName() [2/2]

const char * TDataType::GetTypeName ( EDataType type )

static

Return the name of the type.

Definition at line 113 of file TDataType.cxx.

◆ IsA()

TClass * TDataType::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TObject.

Definition at line 79 of file TDataType.h.

◆ operator=()

TDataType & TDataType::operator= ( const TDataType & dt )

protected

assignment operator

Definition at line 86 of file TDataType.cxx.

◆ Property()

Long_t TDataType::Property ( ) const

overridevirtual

Get property description word. For meaning of bits see EProperty.

Implements TDictionary.

Definition at line 291 of file TDataType.cxx.

◆ SetType()

void TDataType::SetType ( const char * name )

private

Set type id depending on name.

Definition at line 300 of file TDataType.cxx.

◆ Size()

Int_t TDataType::Size ( ) const

Get size of basic typedef'ed type.

Definition at line 375 of file TDataType.cxx.

◆ Streamer()

void TDataType::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TObject.

◆ StreamerNVirtual()

void TDataType::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 79 of file TDataType.h.

Member Data Documentation

◆ fgBuiltins

TDataType * TDataType::fgBuiltins = {nullptr}

staticprivate

Definition at line 30 of file TDataType.h.

◆ fInfo

TypedefInfo_t* TDataType::fInfo

private

Definition at line 47 of file TDataType.h.

◆ fProperty

Long_t TDataType::fProperty

private

Definition at line 50 of file TDataType.h.

◆ fSize

Int_t TDataType::fSize

private

pointer to CINT typedef info

Definition at line 48 of file TDataType.h.

◆ fTrueName

TString TDataType::fTrueName

private

Definition at line 51 of file TDataType.h.

◆ fType

EDataType TDataType::fType

private

Definition at line 49 of file TDataType.h.

◆ fTypeNameIdx

Int_t TDataType::fTypeNameIdx

private

Definition at line 52 of file TDataType.h.

◆ fTypeNameLen

Int_t TDataType::fTypeNameLen

private

Definition at line 53 of file TDataType.h.

Libraries for TDataType:

[legend]

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

core/meta/inc/TDataType.h
core/meta/src/TDataType.cxx

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TDataType() [1/3]

◆ TDataType() [2/3]

◆ TDataType() [3/3]

◆ ~TDataType()

Member Function Documentation

◆ AddBuiltins()

◆ AsString()

◆ CheckInfo()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ DeclFileName()

◆ GetDataType()

◆ GetFullTypeName()

◆ GetType() [1/2]

◆ GetType() [2/2]

◆ GetTypeName() [1/2]

◆ GetTypeName() [2/2]

◆ IsA()

◆ operator=()

◆ Property()

◆ SetType()

◆ Size()

◆ Streamer()

◆ StreamerNVirtual()

Member Data Documentation

◆ fgBuiltins

◆ fInfo

◆ fProperty

◆ fSize

◆ fTrueName

◆ fType

◆ fTypeNameIdx

◆ fTypeNameLen