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Reference Guide
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1 // @(#)root/tree:$Id$
2 // Author: Rene Brun 27/01/96
4 /*************************************************************************
5  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
12 #ifndef ROOT_TLeafObject
13 #define ROOT_TLeafObject
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TLeafObject //
19 // //
20 // A TLeaf for a general object derived from TObject. //
21 // //
22 //////////////////////////////////////////////////////////////////////////
25 #include "TLeaf.h"
26 #include "TClassRef.h"
28 class TClass;
29 class TMethodCall;
31 class TLeafObject : public TLeaf {
33 protected:
34  TClassRef fClass; ///<! pointer to class
35  void **fObjAddress; ///<! Address of Pointer to object
36  Bool_t fVirtual; ///< Support for polymorphism, when set classname is written with object.
38 public:
39  enum EStatusBits {
40  kWarn = BIT(14)
41  };
43  // In version of ROOT older then v6.12, kWarn was set to BIT(12)
44  // which overlaps with TBranch::kBranchObject. Since it stored
45  // in ROOT files as part of the TBranchObject and that we want
46  // to reset in TBranchObject::Streamer, we need to keep track
47  // of the old value.
49  kOldWarn = BIT(12)
50  };
52  TLeafObject();
53  TLeafObject(TBranch *parent, const char *name, const char *type);
54  virtual ~TLeafObject();
56  virtual Bool_t CanGenerateOffsetArray() { return false; }
57  virtual void FillBasket(TBuffer &b);
58  virtual Int_t *GenerateOffsetArrayBase(Int_t /*base*/, Int_t /*events*/) { return nullptr; }
59  TClass *GetClass() const {return fClass;}
60  TMethodCall *GetMethodCall(const char *name);
61  TObject *GetObject() const {return (TObject*)(*fObjAddress);}
62  const char *GetTypeName() const ;
63  virtual void *GetValuePointer() const {return fObjAddress;}
64  Bool_t IsOnTerminalBranch() const;
65  Bool_t IsVirtual() const {return fVirtual;}
66  virtual Bool_t Notify();
67  virtual void PrintValue(Int_t i=0) const;
68  virtual void ReadBasket(TBuffer &b);
69  virtual void SetAddress(void *add=0);
70  virtual void SetVirtual(Bool_t virt=kTRUE) {fVirtual=virt;}
72  ClassDef(TLeafObject,4); //A TLeaf for a general object derived from TObject.
73 };
75 #endif
TClass * GetClass() const
Definition: TLeafObject.h:59
A TLeaf describes individual elements of a TBranch See TBranch structure in TTree.
Definition: TLeaf.h:32
Bool_t IsOnTerminalBranch() const
Return true if this leaf is does not have any sub-branch/leaf.
Bool_t fVirtual
Support for polymorphism, when set classname is written with object.
Definition: TLeafObject.h:36
TObject * GetObject() const
Definition: TLeafObject.h:61
A TLeaf for a general object derived from TObject.
Definition: TLeafObject.h:31
#define BIT(n)
Definition: Rtypes.h:78
Bool_t IsVirtual() const
Definition: TLeafObject.h:65
Buffer base class used for serializing objects.
Definition: TBuffer.h:40
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
TClassRef fClass
! pointer to class
Definition: TLeafObject.h:34
#define ClassDef(name, id)
Definition: Rtypes.h:320
TMethodCall * GetMethodCall(const char *name)
Returns pointer to method corresponding to name.
Definition: TLeafObject.cxx:91
virtual Bool_t CanGenerateOffsetArray()
Definition: TLeafObject.h:56
virtual void * GetValuePointer() const
Definition: TLeafObject.h:63
virtual void ReadBasket(TBuffer &b)
Read leaf elements from Basket input buffer.
Method or function calling interface.
Definition: TMethodCall.h:37
void ** fObjAddress
! Address of Pointer to object
Definition: TLeafObject.h:35
virtual void SetAddress(void *add=0)
Set leaf buffer data address.
virtual ~TLeafObject()
Default destructor for a LeafObject.
Definition: TLeafObject.cxx:52
The ROOT global object gROOT contains a list of all defined classes.
Definition: TClass.h:75
virtual void FillBasket(TBuffer &b)
Pack leaf elements in Basket output buffer.
Definition: TLeafObject.cxx:59
virtual Bool_t Notify()
This method must be overridden to handle object notifcation.
Definition: TObject.h:57
int type
Definition: TGX11.cxx:120
virtual void PrintValue(Int_t i=0) const
Prints leaf value.
const char * GetTypeName() const
Returns name of leaf type.
Mother of all ROOT objects.
Definition: TObject.h:37
Default constructor for LeafObject.
Definition: TLeafObject.cxx:30
TClassRef is used to implement a permanent reference to a TClass object.
Definition: TClassRef.h:29
virtual void SetVirtual(Bool_t virt=kTRUE)
Definition: TLeafObject.h:70
you should not use this method at all Int_t Int_t Double_t Double_t Double_t Int_t Double_t Double_t Double_t Double_t b
Definition: TRolke.cxx:630
A TTree is a list of TBranches.
Definition: TBranch.h:62
const Bool_t kTRUE
Definition: RtypesCore.h:87
char name[80]
Definition: TGX11.cxx:109
virtual Int_t * GenerateOffsetArrayBase(Int_t, Int_t)
Definition: TLeafObject.h:58