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Reference Guide
TDataType Class Reference

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. More...
 
 TDataType (TypedefInfo_t *info=nullptr)
 Default TDataType ctor. More...
 
virtual ~TDataType ()
 TDataType dtor deletes adopted CINT TypedefInfo object. More...
 
const char * AsString (void *buf) const
 Return string containing value in buffer formatted according to the basic data type. More...
 
const char * GetFullTypeName () const
 Get full type description of typedef, e,g.: "class TDirectory*". More...
 
Int_t GetType () const
 
TString GetTypeName ()
 Get basic type of typedef, e,g.: "class TDirectory*" -> "TDirectory". More...
 
TClassIsA () const override
 
Long_t Property () const override
 Get property description word. For meaning of bits see EProperty. More...
 
Int_t Size () const
 Get size of basic typedef'ed type. More...
 
void Streamer (TBuffer &) override
 Stream an object of class TObject. More...
 
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 ()
 
TDictAttributeMapGetAttributeMap () const
 
TClassIsA () const override
 
TDictionaryoperator= (const TDictionary &other)
 
virtual Long_t Property () const =0
 
void Streamer (TBuffer &) override
 Stream an object of class TObject. More...
 
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. More...
 
 TNamed (const TString &name, const TString &title)
 
virtual ~TNamed ()
 TNamed destructor. More...
 
void Clear (Option_t *option="") override
 Set name and title to empty strings (""). More...
 
TObjectClone (const char *newname="") const override
 Make a clone of an object using the Streamer facility. More...
 
Int_t Compare (const TObject *obj) const override
 Compare two TNamed objects. More...
 
void Copy (TObject &named) const override
 Copy this to obj. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
const char * GetName () const override
 Returns name of object. More...
 
const char * GetTitle () const override
 Returns title of object. More...
 
ULong_t Hash () const override
 Return hash value for this object. More...
 
TClassIsA () const override
 
Bool_t IsSortable () const override
 
void ls (Option_t *option="") const override
 List TNamed name and title. More...
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
void Print (Option_t *option="") const override
 Print TNamed name and title. More...
 
virtual void SetName (const char *name)
 Set the name of the TNamed. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Set all the TNamed parameters (name and title). More...
 
virtual void SetTitle (const char *title="")
 Set the title of the TNamed. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
void Streamer (TBuffer &) override
 Stream an object of class TObject. More...
 
void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
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. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Clear (Option_t *="")
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare abstract method. More...
 
virtual void Copy (TObject &object) const
 Copy this to obj. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
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. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=nullptr)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
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. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual TClassIsA () const
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
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. More...
 
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). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
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)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual void Print (Option_t *option="") const
 This method must be overridden when a class wants to print itself. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void Streamer (TBuffer &)
 Stream an object of class TObject. More...
 
void StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
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. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 

Static Public Member Functions

static void AddBuiltins (TCollection *types)
 Create the TDataType objects for builtins. More...
 
static TClassClass ()
 
static const char * Class_Name ()
 
static Version_t Class_Version ()
 
static const char * DeclFileName ()
 
static TDataTypeGetDataType (EDataType type)
 Given a EDataType type, get the TDataType* that represents it. More...
 
static EDataType GetType (const std::type_info &typeinfo)
 Set type id depending on name. More...
 
static const char * GetTypeName (EDataType type)
 Return the name of the type. More...
 
- Static Public Member Functions inherited from TDictionary
static TClassClass ()
 
static const char * Class_Name ()
 
static Version_t Class_Version ()
 
static const char * DeclFileName ()
 
static TDictionaryGetDictionary (const char *name)
 Retrieve the type (class, fundamental type, typedef etc) named "name". More...
 
static TDictionaryGetDictionary (const std::type_info &typeinfo)
 
static bool WantsRegularMembers (EMemberSelection sel)
 
static bool WantsUsingDecls (EMemberSelection sel)
 
- Static Public Member Functions inherited from TNamed
static TClassClass ()
 
static const char * Class_Name ()
 
static Version_t Class_Version ()
 
static const char * DeclFileName ()
 
- Static Public Member Functions inherited from TObject
static TClassClass ()
 
static const char * Class_Name ()
 
static Version_t Class_Version ()
 
static const char * DeclFileName ()
 
static Longptr_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 

Protected Member Functions

 TDataType (const TDataType &)
 copy constructor More...
 
TDataTypeoperator= (const TDataType &)
 assignment operator More...
 
- Protected Member Functions inherited from TDictionary
Bool_t UpdateInterpreterStateMarker ()
 the Cling ID of the transaction that last updated the object More...
 
- 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). More...
 
void MakeZombie ()
 

Private Member Functions

void CheckInfo ()
 Refresh the underlying information. More...
 
void SetType (const char *name)
 Set type id depending on name. More...
 

Private Attributes

TypedefInfo_t * fInfo
 
Long_t fProperty
 
Int_t fSize
 pointer to CINT typedef info More...
 
TString fTrueName
 
EDataType fType
 
Int_t fTypeNameIdx
 
Int_t fTypeNameLen
 

Static Private Attributes

static TDataTypefgBuiltins [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 )) }
 
- 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 Version_t TDataType::Class_Version ( )
inlinestatic
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 TNamed.

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 TNamed.

◆ 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 54 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.


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