library: libCore
#include "TClassTable.h"


class description - source file - inheritance tree (.pdf)

class TClassTable : public TObject

Inheritance Chart:
TClassTable() static TClassRec* FindElement(const char* cname, Bool_t insert = kFALSE) static void SortTable() public:
TClassTable(const TClassTable&) ~TClassTable() static void Add(const char* cname, Version_t id, const type_info& info, VoidFuncPtr_t dict, Int_t pragmabits) static TClass* Class() int Classes() static VoidFuncPtr_t GetDict(const char* cname) static VoidFuncPtr_t GetDict(const type_info& info) static Version_t GetID(const char* cname) static Int_t GetPragmaBits(const char* name) static void Init() virtual TClass* IsA() const static char* Next() TClassTable& operator=(const TClassTable&) virtual void Print(Option_t* option = "") const static void PrintTable() static void Remove(const char* cname) virtual void ShowMembers(TMemberInspector& insp, char* parent) virtual void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b) static void Terminate()

Data Members

static TClassRec** fgTable static TClassRec** fgSortedTable static ROOT::TMapTypeToClassRec* fgIdMap static int fgSize static int fgTally static Bool_t fgSorted static int fgCursor public:
static const enum TClassTable:: kNoStreamer static const enum TClassTable:: kNoInputOperator static const enum TClassTable:: kAutoStreamer

Class Description

 This class registers for all classes their name, id and dictionary   
 function in a hash table. Classes are automatically added by the     
 ctor of a special init class when a global of this init class is     
 initialized when the program starts (see the ClassImp macro).        

 TClassTable is a singleton (i.e. only one can exist per application).

 TClassTable singleton is deleted in Terminate().

void Print(Option_t *option) const
 Print the class table. Before printing the table is sorted
 alphabetically. Only classes specified in option are listed.
 The default is to list all classes.
 Standard wilcarding notation supported.

int Classes()

void Init()

void Add(const char *cname, Version_t id, const type_info &info, VoidFuncPtr_t dict, Int_t pragmabits)
 Add a class to the class table (this is a static function).

void Remove(const char *cname)
 Remove a class from the class table. This happens when a shared library
 is unloaded (i.e. the dtor's of the global init objects are called).

TClassRec* FindElement(const char *cname, Bool_t insert)
 Find a class by name in the class table (using hash of name). Returns
 0 if the class is not in the table. Unless arguments insert is true in
 which case a new entry is created and returned.

Version_t GetID(const char *cname)
 Returns the ID of a class.

Int_t GetPragmaBits(const char *cname)
 Returns the pragma bits as specified in the LinkDef.h file.

VoidFuncPtr_t GetDict(const char *cname)
 Given the class name returns the Dictionary() function of a class
 (uses hash of name).

VoidFuncPtr_t GetDict(const type_info& info)
 Given the type_info returns the Dictionary() function of a class
 (uses hash of type_info::name()).

char* Next()
 Returns next class from sorted class table.

void PrintTable()
 Print the class table. Before printing the table is sorted

void SortTable()
 Sort the class table by ascending class ID's.

void Terminate()
 Deletes the class table (this static class function calls the dtor).

Inline Functions

             TClass* Class()
             TClass* IsA() const
                void ShowMembers(TMemberInspector& insp, char* parent)
                void Streamer(TBuffer& b)
                void StreamerNVirtual(TBuffer& b)
         TClassTable TClassTable(const TClassTable&)
        TClassTable& operator=(const TClassTable&)

Author: Fons Rademakers 11/08/95
Last update: root/cont:$Name: $:$Id: TClassTable.cxx,v 1.36 2005/09/03 07:54:00 pcanal Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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