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TClassTable.h
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1// @(#)root/cont:$Id$
2// Author: Fons Rademakers 11/08/95
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_TClassTable
13#define ROOT_TClassTable
14
15
16//////////////////////////////////////////////////////////////////////////
17// //
18// TClassTable //
19// //
20// This class registers for all classes their name, id and dictionary //
21// function in a hash table. //
22// //
23//////////////////////////////////////////////////////////////////////////
24
25#include "TObject.h"
26#include <string>
27#include <atomic>
28
29class TProtoClass;
30
31namespace ROOT {
32 class TClassAlt;
33 class TClassRec;
34 class TMapTypeToClassRec;
35}
36
37class TClassTable : public TObject {
38
39friend void ROOT::ResetClassVersion(TClass*, const char*, Short_t);
40friend class TROOT;
41
42private:
45
50 static UInt_t fgSize;
51 static std::atomic<UInt_t> fgTally;
54
56
57 static ROOT::TClassRec *FindElement(const char *cname, Bool_t insert);
58 static void SortTable();
59
61
62public:
63 // bits that can be set in pragmabits
64 enum {
67 };
68
70
71 static void Add(const char *cname, Version_t id,
72 const std::type_info &info, DictFuncPtr_t dict,
73 Int_t pragmabits);
74 static void Add(TProtoClass *protoClass);
75 static ROOT::TClassAlt *AddAlternate(const char *normname, const char *alternate);
76 static char *At(UInt_t index);
77 int Classes();
78 static Bool_t Check(const char *cname, std::string &normname);
79 static Version_t GetID(const char *cname);
80 static Int_t GetPragmaBits(const char *name);
81 static DictFuncPtr_t GetDict(const char *cname);
82 static DictFuncPtr_t GetDict(const std::type_info& info);
83 static DictFuncPtr_t GetDictNorm(const char *cname);
84 static TProtoClass *GetProto(const char *cname);
85 static TProtoClass *GetProtoNorm(const char *cname);
86 static void Init();
87 static char *Next();
88 void Print(Option_t *option="") const override;
89 static void PrintTable();
90 static void Remove(const char *cname);
91 static void RemoveAlternate(ROOT::TClassAlt *alt);
92 static void Terminate();
93
94 ClassDefOverride(TClassTable,0) //Table of known classes
95};
96
98
99namespace ROOT {
100 extern void AddClass(const char *cname, Version_t id, DictFuncPtr_t dict,
101 Int_t pragmabits);
102 extern void RemoveClass(const char *cname, TClass *cl);
103}
104
105#endif
#define R__EXTERN
Definition DllImport.h:27
bool Bool_t
Definition RtypesCore.h:63
int Int_t
Definition RtypesCore.h:45
short Version_t
Definition RtypesCore.h:65
unsigned int UInt_t
Definition RtypesCore.h:46
short Short_t
Definition RtypesCore.h:39
const char Option_t
Definition RtypesCore.h:66
TClass *(* DictFuncPtr_t)()
Definition Rtypes.h:80
#define ClassDefOverride(name, id)
Definition Rtypes.h:341
R__EXTERN TClassTable * gClassTable
Definition TClassTable.h:97
Option_t Option_t option
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t index
Option_t Option_t TPoint TPoint const char GetTextMagnitude GetFillStyle GetLineColor GetLineWidth GetMarkerStyle GetTextAlign GetTextColor GetTextSize void char Point_t Rectangle_t WindowAttributes_t Float_t Float_t Float_t Int_t Int_t UInt_t UInt_t Rectangle_t Int_t Int_t Window_t TString Int_t GCValues_t GetPrimarySelectionOwner GetDisplay GetScreen GetColormap GetNativeEvent const char const char dpyName wid window const char font_name cursor keysym reg const char only_if_exist regb h Point_t winding char text const char depth char const char Int_t count const char cname
char name[80]
Definition TGX11.cxx:110
This class registers for all classes their name, id and dictionary function in a hash table.
Definition TClassTable.h:37
static void PrintTable()
Print the class table.
static Int_t GetPragmaBits(const char *name)
Returns the pragma bits as specified in the LinkDef.h file.
static DictFuncPtr_t GetDict(const char *cname)
Given the class name returns the Dictionary() function of a class (uses hash of name).
static Version_t GetID(const char *cname)
Returns the ID of a class.
ROOT::TMapTypeToClassRec IdMap_t
Definition TClassTable.h:43
static void SortTable()
Sort the class table by ascending class ID's.
static TProtoClass * GetProtoNorm(const char *cname)
Given the class normalized name returns the TClassProto object for the class.
static DictFuncPtr_t GetDictNorm(const char *cname)
Given the normalized class name returns the Dictionary() function of a class (uses hash of name).
static ROOT::TClassAlt ** fgAlternate
Definition TClassTable.h:46
void Print(Option_t *option="") const override
Print the class table.
static void Terminate()
Deletes the class table (this static class function calls the dtor).
static TProtoClass * GetProto(const char *cname)
Given the class name returns the TClassProto object for the class.
static std::atomic< UInt_t > fgTally
Definition TClassTable.h:51
TClassTable()
TClassTable is a singleton (i.e. only one can exist per application).
static char * Next()
Returns next class from sorted class table.
static char * At(UInt_t index)
Returns class at index from sorted class table.
static Bool_t Check(const char *cname, std::string &normname)
static void Init()
@ kHasCustomStreamerMember
Definition TClassTable.h:66
static void Remove(const char *cname)
Remove a class from the class table.
static ROOT::TClassRec ** fgSortedTable
Definition TClassTable.h:48
static ROOT::TClassRec ** fgTable
Definition TClassTable.h:47
static IdMap_t * fgIdMap
Definition TClassTable.h:49
static Bool_t CheckClassTableInit()
Return true fs the table exist.
static void Add(const char *cname, Version_t id, const std::type_info &info, DictFuncPtr_t dict, Int_t pragmabits)
Add a class to the class table (this is a static function).
~TClassTable()
TClassTable singleton is deleted in Terminate().
static void RemoveAlternate(ROOT::TClassAlt *alt)
static ROOT::TClassRec * FindElement(const char *cname, Bool_t insert)
Find a class by name in the class table (using hash of name).
static Bool_t fgSorted
Definition TClassTable.h:52
static UInt_t fgSize
Definition TClassTable.h:50
static ROOT::TClassAlt * AddAlternate(const char *normname, const char *alternate)
static UInt_t fgCursor
Definition TClassTable.h:53
TClass instances represent classes, structs and namespaces in the ROOT type system.
Definition TClass.h:81
Mother of all ROOT objects.
Definition TObject.h:41
Persistent version of a TClass.
Definition TProtoClass.h:38
ROOT top level object description.
Definition TROOT.h:94
This file contains a specialised ROOT message handler to test for diagnostic in unit tests.
void RemoveClass(const char *cname, TClass *cl)
Global function called by the dtor of a class's init class (see the ClassImp macro).
void AddClass(const char *cname, Version_t id, const std::type_info &info, DictFuncPtr_t dict, Int_t pragmabits)
Global function called by the ctor of a class's init class (see the ClassImp macro).
void ResetClassVersion(TClass *, const char *, Short_t)
Global function to update the version number.