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TLeafElement.h
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1// @(#)root/tree:$Id$
2// Author: Rene Brun 14/01/2001
3
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 *************************************************************************/
11
12#ifndef ROOT_TLeafElement
13#define ROOT_TLeafElement
14
15
16//////////////////////////////////////////////////////////////////////////
17// //
18// TLeafElement //
19// //
20// A TLeaf for a general object derived from TObject. //
21// //
22//////////////////////////////////////////////////////////////////////////
23
24#include <atomic>
25
26#include "TDataType.h"
27#include "TLeaf.h"
28#include "TBranchElement.h"
29
30class TMethodCall;
31
32class TLeafElement : public TLeaf {
33
34protected:
35 char *fAbsAddress; ///<! Absolute leaf Address
36 Int_t fID; ///< element serial number in fInfo
37 Int_t fType; ///< leaf type
38 mutable std::atomic<DeserializeType> fDeserializeTypeCache{ DeserializeType::kInvalid }; ///<! Cache of the type of deserialization.
39 mutable std::atomic<EDataType> fDataTypeCache{EDataType::kOther_t}; ///<! Cache of the EDataType of deserialization.
40
41private:
42 virtual Int_t GetOffsetHeaderSize() const {return 1;}
43
44public:
46 TLeafElement(TBranch *parent, const char *name, Int_t id, Int_t type);
47 virtual ~TLeafElement();
48
50 virtual Int_t *GenerateOffsetArrayBase(Int_t /*base*/, Int_t /*events*/) { return nullptr; }
51 virtual DeserializeType GetDeserializeType() const;
52
53 virtual TString GetFullName() const;
54 virtual Int_t GetLen() const {return ((TBranchElement*)fBranch)->GetNdata()*fLen;}
55 TMethodCall *GetMethodCall(const char *name);
56 virtual Int_t GetMaximum() const {return ((TBranchElement*)fBranch)->GetMaximum();}
57 virtual Int_t GetNdata() const {return ((TBranchElement*)fBranch)->GetNdata()*fLen;}
58 virtual const char *GetTypeName() const {return ((TBranchElement*)fBranch)->GetTypeName();}
59
60 virtual Double_t GetValue(Int_t i=0) const { return ((TBranchElement*)fBranch)->GetValue(i, fLen, kFALSE);}
61 virtual Long64_t GetValueLong64(Int_t i = 0) const { return ((TBranchElement*)fBranch)->GetTypedValue<Long64_t>(i, fLen, kFALSE); }
62 virtual LongDouble_t GetValueLongDouble(Int_t i = 0) const { return ((TBranchElement*)fBranch)->GetTypedValue<LongDouble_t>(i, fLen, kFALSE); }
63 template<typename T> T GetTypedValueSubArray(Int_t i=0, Int_t j=0) const {return ((TBranchElement*)fBranch)->GetTypedValue<T>(i, j, kTRUE);}
64
65 virtual bool ReadBasketFast(TBuffer&, Long64_t);
66
67 virtual void *GetValuePointer() const { return ((TBranchElement*)fBranch)->GetValuePointer(); }
68 virtual Bool_t IncludeRange(TLeaf *);
69 virtual Bool_t IsOnTerminalBranch() const;
70 virtual void PrintValue(Int_t i=0) const {((TBranchElement*)fBranch)->PrintValue(i);}
71 virtual void SetLeafCount(TLeaf *leaf) {fLeafCount = leaf;}
72
73 ClassDef(TLeafElement,1); //A TLeaf for a general object derived from TObject.
74};
75
76#endif
int Int_t
Definition: RtypesCore.h:45
const Bool_t kFALSE
Definition: RtypesCore.h:101
bool Bool_t
Definition: RtypesCore.h:63
double Double_t
Definition: RtypesCore.h:59
long double LongDouble_t
Definition: RtypesCore.h:61
long long Long64_t
Definition: RtypesCore.h:80
const Bool_t kTRUE
Definition: RtypesCore.h:100
#define ClassDef(name, id)
Definition: Rtypes.h:325
@ kOther_t
Definition: TDataType.h:32
char name[80]
Definition: TGX11.cxx:110
int type
Definition: TGX11.cxx:121
A Branch for the case of an object.
A TTree is a list of TBranches.
Definition: TBranch.h:89
Buffer base class used for serializing objects.
Definition: TBuffer.h:43
A TLeaf for the general case when using the branches created via a TStreamerInfo (i....
Definition: TLeafElement.h:32
T GetTypedValueSubArray(Int_t i=0, Int_t j=0) const
Definition: TLeafElement.h:63
TMethodCall * GetMethodCall(const char *name)
Returns pointer to method corresponding to name name is a string with the general form "method(list o...
char * fAbsAddress
! Absolute leaf Address
Definition: TLeafElement.h:35
std::atomic< DeserializeType > fDeserializeTypeCache
! Cache of the type of deserialization.
Definition: TLeafElement.h:38
virtual const char * GetTypeName() const
Definition: TLeafElement.h:58
virtual Int_t GetMaximum() const
Definition: TLeafElement.h:56
virtual ~TLeafElement()
Default destructor for a LeafObject.
virtual void SetLeafCount(TLeaf *leaf)
Set the leaf count of this leaf.
Definition: TLeafElement.h:71
virtual Bool_t IsOnTerminalBranch() const
Return true if this leaf is does not have any sub-branch/leaf.
virtual void PrintValue(Int_t i=0) const
Definition: TLeafElement.h:70
Int_t fType
leaf type
Definition: TLeafElement.h:37
virtual DeserializeType GetDeserializeType() const
Determine if this TLeafElement supports bulk IO.
virtual TString GetFullName() const
Return the full name (including the parent's branch names) of the leaf.
virtual LongDouble_t GetValueLongDouble(Int_t i=0) const
Definition: TLeafElement.h:62
virtual Int_t GetOffsetHeaderSize() const
Definition: TLeafElement.h:42
std::atomic< EDataType > fDataTypeCache
! Cache of the EDataType of deserialization.
Definition: TLeafElement.h:39
virtual Int_t * GenerateOffsetArrayBase(Int_t, Int_t)
Definition: TLeafElement.h:50
virtual Bool_t IncludeRange(TLeaf *)
Copy/set fMinimum and fMaximum to include/be wide than those of the parameter.
virtual void * GetValuePointer() const
Definition: TLeafElement.h:67
Int_t fID
element serial number in fInfo
Definition: TLeafElement.h:36
virtual Long64_t GetValueLong64(Int_t i=0) const
Definition: TLeafElement.h:61
virtual Double_t GetValue(Int_t i=0) const
Definition: TLeafElement.h:60
virtual Int_t GetLen() const
Return the number of effective elements of this leaf, for the current entry.
Definition: TLeafElement.h:54
virtual Int_t GetNdata() const
Definition: TLeafElement.h:57
virtual Bool_t CanGenerateOffsetArray()
Definition: TLeafElement.h:49
virtual bool ReadBasketFast(TBuffer &, Long64_t)
Deserialize N events from an input buffer.
TLeafElement()
Default constructor for LeafObject.
A TLeaf describes individual elements of a TBranch See TBranch structure in TTree.
Definition: TLeaf.h:57
Int_t fLenType
Number of bytes for this data type.
Definition: TLeaf.h:73
Int_t fLen
Number of fixed length elements in the leaf's data.
Definition: TLeaf.h:72
DeserializeType
Definition: TLeaf.h:99
TBranch * fBranch
! Pointer to supporting branch (we do not own the branch)
Definition: TLeaf.h:78
TLeaf * fLeafCount
Pointer to Leaf count if variable length (we do not own the counter)
Definition: TLeaf.h:77
Method or function calling interface.
Definition: TMethodCall.h:37
Basic string class.
Definition: TString.h:136
double T(double x)
Definition: ChebyshevPol.h:34