All ROOT classes may have RTTI (run time type identification) support added.

The data is stored in so called DICTIONARY (look at TDictionary). Information about a class is stored in TClass. This information may be obtained via the cling api - see class TCling. TClass has a list of TDataMember objects providing information about all data members of described class.

TDataMember provides information about name of data member, its type, and comment field string. It also tries to find the TMethodCall objects responsible for getting/setting a value of it, and gives you pointers to these methods. This gives you a unique possibility to access protected and private (!) data members if only methods for doing that are defined.

These methods could either be specified in a comment field, or found out automatically by ROOT: here's an example: suppose you have a class definition:

class MyClass{
    private:
        Float_t fX1;
            ...
    public:
        void    SetX1(Float_t x) {fX1 = x;};
        Float_t GetX1()          {return fX1;};
            ...
}

Look at the data member name and method names: a data member name has a prefix letter (f) and has a base name X1 . The methods for getting and setting this value have names which consist of string Get/Set and the same base name. This convention of naming data fields and methods which access them allows TDataMember find this methods by itself completely automatically. To make this description complete, one should know, that names that are automatically recognized may be also: for data fields: either fXXX or fIsXXX; and for getter function GetXXX() or IsXXX() [where XXX is base name].

As an example of using it let's analyse a few lines which get and set a fEditable field in TCanvas:

TCanvas     *c  = new TCanvas("c");   // create a canvas
TClass      *cl = c->IsA();            // get its class description object.
 
TDataMember *dm = cl->GetDataMember("fEditable"); //This is our data member
 
TMethodCall *getter = dm->GetterMethod(c); //find a method that gets value!
Long_t l;   // declare a storage for this value;
 
getter->Execute(c,"",l);  // Get this Value !!!! It will appear in l !!!
 
 
TMethodCall *setter = dm->SetterMethod(c);
setter->Execute(c,"0",);   // Set Value 0 !!!

This trick is widely used in ROOT TContextMenu and dialogs for obtaining current values and put them as initial values in dialog fields.

If you don't want to follow the convention of naming used by ROOT you still could benefit from Getter/Setter method support: the solution is to instruct ROOT what the names of these routines are. The way to do it is putting this information in a comment string to a data field in your class declaration:

class MyClass{
    Int_t mydata;  //  *OPTIONS={GetMethod="Get";SetMethod="Set"}
     ...
    Int_t Get() const { return mydata;};
    void  Set(Int_t i) {mydata=i;};
    }

However, this getting/setting functions are not the only feature of this class. The next point is providing lists of possible settings for the concerned data member. The idea is to have a list of possible options for this data member, with strings identifying them. This is used in dialogs with parameters to set - for details see TMethodArg, TRootContextMenu, TContextMenu. This list not only specifies the allowed value, but also provides strings naming the options. Options are managed via TList of TOptionListItem objects. This list is also created automatically: if a data type is an enum type, the list will have items describing every enum value, and named according to enum name. If type is Bool_t, two options "On" and "Off" with values 0 and 1 are created. For other types you need to instruct ROOT about possible options. The way to do it is the same as in case of specifying getter/setter method: a comment string to a data field in Your header file with class definition. The most general format of this string is:

*OPTIONS={GetMethod="getter";SetMethod="setter";Items=(it1="title1",it2="title2", ... ) }

While parsing this string ROOT firstly looks for command-tokens: GetMethod, SetMethod, Items; They must be preceded by string OPTIONS= , enclosed by {} and separated by semicolons ";". All command token should have a form TOKEN=VALUE. All tokens are optional. The names of getter and setter method must be enclosed by double-quote marks (") . Specifications of Items is slightly more complicated: you need to put token ITEMS= and then enclose all options in curly brackets "()". You separate options by comas ",". Each option item may have one of the following forms: @icode {.cpp} IntegerValue = "Text Label" EnumValue = "Text Label" "TextValue" = Text Label"

{.cpp}

One can specify values as Integers or Enums - when data field is an Integer, Float or Enum type; as texts - for char (more precisely: Option_t).

As mentioned above - this information are mainly used by contextmenu, but also in Dump() and Inspect() methods and by the THtml class.

Definition at line 31 of file TDataMember.h.

Public Member Functions
	TDataMember (DataMemberInfo_t info=nullptr, TClass cl=nullptr)
	Default TDataMember ctor.

virtual	~TDataMember ()
	TDataMember dtor deletes adopted CINT DataMemberInfo object.

Int_t	GetArrayDim () const
	Return number of array dimensions.

const char *	GetArrayIndex () const
	If the data member is pointer and has a valid array size in its comments GetArrayIndex returns a string pointing to it; otherwise it returns an empty string.

TClass *	GetClass () const

TDataType *	GetDataType () const

DeclId_t	GetDeclId () const

const char *	GetFullTypeName () const
	Get the concrete type name of this data member, including `const` and `volatile` qualifiers.

Int_t	GetMaxIndex (Int_t dim) const
	Return maximum index for array dimension "dim".

Longptr_t	GetOffset () const
	Get offset from "this".

Longptr_t	GetOffsetCint () const
	Get offset from "this" using the information in CINT only.

TList *	GetOptions ()
	Returns list of options - list of TOptionListItems.

TMethodCall *	GetterMethod (TClass *cl=nullptr)
	Return a TMethodCall method responsible for getting the value of data member.

const char *	GetTrueTypeName () const
	Get the desugared type name of this data member, including `const` and `volatile` qualifiers.

const char *	GetTypeName () const
	Get the decayed type name of this data member, removing `const` and `volatile` qualifiers, and pointers `*` and references `&`.

Int_t	GetUnitSize () const
	Get the sizeof the underlying type of the data member (i.e.

TClass *	IsA () const override

Bool_t	IsaPointer () const
	Return true if data member is a pointer.

Bool_t	IsBasic () const
	Return true if data member is a basic type, e.g. char, int, long...

Bool_t	IsEnum () const
	Return true if data member is an enum.

Bool_t	IsPersistent () const

Int_t	IsSTLContainer ()
	The return type is defined in TDictionary (kVector, kList, etc.)

Bool_t	IsValid ()
	Return true if this data member object is pointing to a currently loaded data member.

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

void	SetClass (TClass *cl)

TMethodCall *	SetterMethod (TClass *cl)
	Return a TMethodCall method responsible for setting the value of data member.

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

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual bool	Update (DataMemberInfo_t *info)
	Update the TFunction to reflect the new info.

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
	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	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 TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

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
	TDataMember (const TDataMember &)
	copy constructor

TDataMember &	operator= (const TDataMember &)
	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 TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

Private Types
enum	EStatusBits { kObjIsPersistent = (1ULL << ( 2 )) }

Private Member Functions
void	ExtractOptionsFromComment ()
	Build TOptionListItems from the member comment `*OPTION={`

void	Init (bool afterReading)
	Routines called by the constructor and Update to reset the member's information.

Private Attributes
Int_t	fArrayDim

TString	fArrayIndex

Int_t *	fArrayMaxIndex

TClass *	fClass
	pointer to CINT data member info

TDataType *	fDataType
	pointer to the class

TString	fFullTypeName

DataMemberInfo_t *	fInfo

Longptr_t	fOffset
	pointer to data basic type descriptor

TList *	fOptions
	method which sets value;

Long_t	fProperty

Int_t	fSTLCont

TString	fTrueTypeName

TString	fTypeName

TMethodCall *	fValueGetter

TMethodCall *	fValueSetter
	method that returns a value;

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 <TDataMember.h>

Inheritance diagram for TDataMember:

[legend]

Member Enumeration Documentation

◆ EStatusBits

enum TDataMember::EStatusBits

private

Enumerator
kObjIsPersistent

Definition at line 34 of file TDataMember.h.

Constructor & Destructor Documentation

◆ TDataMember() [1/2]

TDataMember::TDataMember ( const TDataMember & dm )

protected

copy constructor

Definition at line 273 of file TDataMember.cxx.

◆ TDataMember() [2/2]

TDataMember::TDataMember	(	DataMemberInfo_t *	info = `nullptr`,
		TClass *	cl = `nullptr`
	)

Default TDataMember ctor.

TDataMembers are constructed in TClass via a call to TCling::CreateListOfDataMembers(). It parses the comment string, initializes optionlist and getter/setter methods.

Definition at line 172 of file TDataMember.cxx.

◆ ~TDataMember()

TDataMember::~TDataMember ( )

virtual

TDataMember dtor deletes adopted CINT DataMemberInfo object.

Definition at line 334 of file TDataMember.cxx.

Member Function Documentation

◆ Class()

static TClass * TDataMember::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TDataMember::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TDataMember::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 98 of file TDataMember.h.

◆ DeclFileName()

static const char * TDataMember::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 98 of file TDataMember.h.

◆ ExtractOptionsFromComment()

void TDataMember::ExtractOptionsFromComment ( )

private

Build TOptionListItems from the member comment *OPTION={

Definition at line 621 of file TDataMember.cxx.

◆ GetArrayDim()

Int_t TDataMember::GetArrayDim ( ) const

Return number of array dimensions.

Definition at line 349 of file TDataMember.cxx.

◆ GetArrayIndex()

const char * TDataMember::GetArrayIndex ( ) const

If the data member is pointer and has a valid array size in its comments GetArrayIndex returns a string pointing to it; otherwise it returns an empty string.

Definition at line 371 of file TDataMember.cxx.

◆ GetClass()

TClass * TDataMember::GetClass ( ) const

inline

Definition at line 75 of file TDataMember.h.

◆ GetDataType()

TDataType * TDataMember::GetDataType ( ) const

inline

Definition at line 76 of file TDataMember.h.

◆ GetDeclId()

TDictionary::DeclId_t TDataMember::GetDeclId ( ) const

Definition at line 386 of file TDataMember.cxx.

◆ GetFullTypeName()

const char * TDataMember::GetFullTypeName ( ) const

Get the concrete type name of this data member, including const and volatile qualifiers.

This function does not resolve any typedef in the type name. E.g., let Foo_t be a typedef to class TDirectory; assuming this is a member of type const Foo_t*, this function will return const Foo_t*.

For the desugared type name, see TDataMember::GetTrueTypeName().

Definition at line 423 of file TDataMember.cxx.

◆ GetMaxIndex()

Int_t TDataMember::GetMaxIndex ( Int_t dim ) const

Return maximum index for array dimension "dim".

Definition at line 395 of file TDataMember.cxx.

◆ GetOffset()

Longptr_t TDataMember::GetOffset ( ) const

Get offset from "this".

Definition at line 443 of file TDataMember.cxx.

◆ GetOffsetCint()

Longptr_t TDataMember::GetOffsetCint ( ) const

Get offset from "this" using the information in CINT only.

Definition at line 492 of file TDataMember.cxx.

◆ GetOptions()

TList * TDataMember::GetOptions ( )

Returns list of options - list of TOptionListItems.

Definition at line 820 of file TDataMember.cxx.

◆ GetterMethod()

TMethodCall * TDataMember::GetterMethod ( TClass * cl = nullptr )

Return a TMethodCall method responsible for getting the value of data member.

The cl argument specifies the class of the object which will be used to call this method (in case of multiple inheritance TMethodCall needs to know this to calculate the proper offset).

Definition at line 834 of file TDataMember.cxx.

◆ GetTrueTypeName()

const char * TDataMember::GetTrueTypeName ( ) const

Get the desugared type name of this data member, including const and volatile qualifiers.

This function resolves typedefs in the type name. E.g., let Foo_t be a typedef to class TDirectory; assuming this is a member of type const Foo_t*, this function will return const TDirectory*.

Definition at line 435 of file TDataMember.cxx.

◆ GetTypeName()

const char * TDataMember::GetTypeName ( ) const

Get the decayed type name of this data member, removing const and volatile qualifiers, and pointers * and references &.

This function resolves typedefs in the type name. E.g., let Foo_t be a typedef to class TDirectory; assuming this is a member of type const Foo_t*, this function will return TDirectory.

Definition at line 410 of file TDataMember.cxx.

◆ GetUnitSize()

Int_t TDataMember::GetUnitSize ( ) const

Get the sizeof the underlying type of the data member (i.e.

if the member is an array sizeof(member)/length)

Definition at line 507 of file TDataMember.cxx.

◆ Init()

void TDataMember::Init ( bool afterReading )

private

Routines called by the constructor and Update to reset the member's information.

afterReading is set when initializing after reading through Streamer().

Definition at line 195 of file TDataMember.cxx.

◆ IsA()

TClass * TDataMember::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TObject.

Definition at line 98 of file TDataMember.h.

◆ IsaPointer()

Bool_t TDataMember::IsaPointer ( ) const

Return true if data member is a pointer.

Definition at line 542 of file TDataMember.cxx.

◆ IsBasic()

Bool_t TDataMember::IsBasic ( ) const

Return true if data member is a basic type, e.g. char, int, long...

Definition at line 524 of file TDataMember.cxx.

◆ IsEnum()

Bool_t TDataMember::IsEnum ( ) const

Return true if data member is an enum.

Definition at line 533 of file TDataMember.cxx.

◆ IsPersistent()

Bool_t TDataMember::IsPersistent ( ) const

inline

Definition at line 91 of file TDataMember.h.

◆ IsSTLContainer()

int TDataMember::IsSTLContainer ( )

The return type is defined in TDictionary (kVector, kList, etc.)

Definition at line 551 of file TDataMember.cxx.

◆ IsValid()

Bool_t TDataMember::IsValid ( )

Return true if this data member object is pointing to a currently loaded data member.

If a function is unloaded after the TDataMember is created, the TDataMember will be set to be invalid.

Definition at line 564 of file TDataMember.cxx.

◆ operator=()

TDataMember & TDataMember::operator= ( const TDataMember & dm )

protected

assignment operator

Definition at line 298 of file TDataMember.cxx.

◆ Property()

Long_t TDataMember::Property ( ) const

overridevirtual

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

Implements TDictionary.

Definition at line 588 of file TDataMember.cxx.

◆ SetClass()

void TDataMember::SetClass ( TClass * cl )

inline

Definition at line 95 of file TDataMember.h.

◆ SetterMethod()

TMethodCall * TDataMember::SetterMethod ( TClass * cl )

Return a TMethodCall method responsible for setting the value of data member.

The cl argument specifies the class of the object which will be used to call this method (in case of multiple inheritance TMethodCall needs to know this to calculate the proper offset).

Definition at line 878 of file TDataMember.cxx.

◆ Streamer()

void TDataMember::Streamer ( TBuffer & b )

overridevirtual

Stream an object of TDataMember.

Forces calculation of all cached (and persistent) values.

Reimplemented from TObject.

Definition at line 956 of file TDataMember.cxx.

◆ StreamerNVirtual()

void TDataMember::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 98 of file TDataMember.h.

◆ Update()

Bool_t TDataMember::Update ( DataMemberInfo_t * info )

virtual

Update the TFunction to reflect the new info.

This can be used to implement unloading (info == 0) and then reloading (info being the 'new' decl address).

Definition at line 921 of file TDataMember.cxx.

Member Data Documentation

◆ fArrayDim

Int_t TDataMember::fArrayDim

private

Definition at line 45 of file TDataMember.h.

◆ fArrayIndex

TString TDataMember::fArrayIndex

private

Definition at line 47 of file TDataMember.h.

◆ fArrayMaxIndex

Int_t* TDataMember::fArrayMaxIndex

private

Definition at line 46 of file TDataMember.h.

◆ fClass

TClass* TDataMember::fClass

private

pointer to CINT data member info

Definition at line 39 of file TDataMember.h.

◆ fDataType

TDataType* TDataMember::fDataType

private

pointer to the class

Definition at line 40 of file TDataMember.h.

◆ fFullTypeName

TString TDataMember::fFullTypeName

private

Definition at line 50 of file TDataMember.h.

◆ fInfo

DataMemberInfo_t* TDataMember::fInfo

private

Definition at line 38 of file TDataMember.h.

◆ fOffset

Longptr_t TDataMember::fOffset

private

pointer to data basic type descriptor

Definition at line 42 of file TDataMember.h.

◆ fOptions

TList* TDataMember::fOptions

private

method which sets value;

Definition at line 58 of file TDataMember.h.

◆ fProperty

Long_t TDataMember::fProperty

private

Definition at line 44 of file TDataMember.h.

◆ fSTLCont

Int_t TDataMember::fSTLCont

private

Definition at line 43 of file TDataMember.h.

◆ fTrueTypeName

TString TDataMember::fTrueTypeName

private

Definition at line 51 of file TDataMember.h.

◆ fTypeName

TString TDataMember::fTypeName

private

Definition at line 49 of file TDataMember.h.

◆ fValueGetter

TMethodCall* TDataMember::fValueGetter

private

Definition at line 56 of file TDataMember.h.

◆ fValueSetter

TMethodCall* TDataMember::fValueSetter

private

method that returns a value;

Definition at line 57 of file TDataMember.h.

Libraries for TDataMember:

[legend]

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

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

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Types

Private Member Functions

Private Attributes

Additional Inherited Members

Member Enumeration Documentation

◆ EStatusBits

Constructor & Destructor Documentation

◆ TDataMember() [1/2]

◆ TDataMember() [2/2]

◆ ~TDataMember()

Member Function Documentation

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ DeclFileName()

◆ ExtractOptionsFromComment()

◆ GetArrayDim()

◆ GetArrayIndex()

◆ GetClass()

◆ GetDataType()

◆ GetDeclId()

◆ GetFullTypeName()

◆ GetMaxIndex()

◆ GetOffset()

◆ GetOffsetCint()

◆ GetOptions()

◆ GetterMethod()

◆ GetTrueTypeName()

◆ GetTypeName()

◆ GetUnitSize()

◆ Init()

◆ IsA()

◆ IsaPointer()

◆ IsBasic()

◆ IsEnum()

◆ IsPersistent()

◆ IsSTLContainer()

◆ IsValid()

◆ operator=()

◆ Property()

◆ SetClass()

◆ SetterMethod()

◆ Streamer()

◆ StreamerNVirtual()

◆ Update()

Member Data Documentation

◆ fArrayDim

◆ fArrayIndex

◆ fArrayMaxIndex

◆ fClass

◆ fDataType

◆ fFullTypeName

◆ fInfo

◆ fOffset

◆ fOptions

◆ fProperty

◆ fSTLCont

◆ fTrueTypeName

◆ fTypeName

◆ fValueGetter

◆ fValueSetter