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TBaseClass.cxx
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1// @(#)root/meta:$Id$
2// Author: Fons Rademakers 08/02/95
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#include "TBaseClass.h"
13#include "TBuffer.h"
14#include "TClass.h"
15#include "TInterpreter.h"
16#include <limits.h>
17
18#include "TVirtualMutex.h" // For R__LOCKGUARD
19
20/** \class TBaseClass
21Each class (see TClass) has a linked list of its base class(es).
22This class describes one single base class.
23The base class info is obtained via the CINT api.
24 see class TCling.
25
26The base class information is used a.o. in to find all inherited methods.
27*/
28
29
31
32////////////////////////////////////////////////////////////////////////////////
33/// Default TBaseClass ctor. TBaseClasses are constructed in TClass
34/// via a call to TCling::CreateListOfBaseClasses().
35
36TBaseClass::TBaseClass(BaseClassInfo_t *info, TClass *cl) :
37 TDictionary(), fInfo(info), fClass(cl), fDelta(INT_MAX),
38 fProperty(-1), fSTLType(-1)
39{
41}
42
43////////////////////////////////////////////////////////////////////////////////
44/// TBaseClass dtor deletes adopted CINT BaseClassInfo object.
45
47{
49}
50
51////////////////////////////////////////////////////////////////////////////////
52/// Called by the browser, to browse a baseclass.
53
55{
57 if (c) c->Browse(b);
58}
59
60////////////////////////////////////////////////////////////////////////////////
61/// Get pointer to the base class TClass.
62
64{
65 if (!fClassPtr) {
67 else fClassPtr = TClass::GetClass(fName, load);
68 }
69 return fClassPtr;
70}
71
72////////////////////////////////////////////////////////////////////////////////
73/// Get offset from "this" to part of base class.
74
76{
77 // Initialized to INT_MAX to signal that it's unset; -1 is a valid value
78 // meaning "cannot calculate base offset".
79 if (fDelta == INT_MAX) {
82 fDelta = -1;
83 else if (fInfo)
85 }
86 return fDelta;
87}
88
89////////////////////////////////////////////////////////////////////////////////
90/// Get base class description (comment).
91
92const char *TBaseClass::GetTitle() const
93{
94 TClass *c = ((TBaseClass *)this)->GetClassPointer();
95 return c ? c->GetTitle() : "";
96}
97
98////////////////////////////////////////////////////////////////////////////////
99/// Return which type (if any) of STL container the data member is.
100
102{
103 // fSTLType is -1 if not yet evaluated.
104 // fSTLType is -2 if no fInfo was available.
105
106 if (fSTLType < 0) {
107 if (!fInfo) {
108 fSTLType = -2;
109 } else {
112 else if (!strcmp(type, "vector")) fSTLType = ROOT::kSTLvector;
113 else if (!strcmp(type, "list")) fSTLType = ROOT::kSTLlist;
114 else if (!strcmp(type, "forward_list")) fSTLType = ROOT::kSTLforwardlist;
115 else if (!strcmp(type, "deque")) fSTLType = ROOT::kSTLdeque;
116 else if (!strcmp(type, "map")) fSTLType = ROOT::kSTLmap;
117 else if (!strcmp(type, "multimap")) fSTLType = ROOT::kSTLmultimap;
118 else if (!strcmp(type, "set")) fSTLType = ROOT::kSTLset;
119 else if (!strcmp(type, "multiset")) fSTLType = ROOT::kSTLmultiset;
120 else if (!strcmp(type, "unordered_set")) fSTLType = ROOT::kSTLunorderedset;
121 else if (!strcmp(type, "unordered_multiset")) fSTLType = ROOT::kSTLunorderedmultiset;
122 else if (!strcmp(type, "unordered_map")) fSTLType = ROOT::kSTLunorderedmap;
123 else if (!strcmp(type, "unordered_multimap")) fSTLType = ROOT::kSTLunorderedmultimap;
124 else fSTLType = ROOT::kNotSTL;
125 }
126 }
127 if (fSTLType == -2) return ROOT::kNotSTL;
128 return (ROOT::ESTLType) fSTLType;
129}
130
131////////////////////////////////////////////////////////////////////////////////
132/// Get property description word. For meaning of bits see EProperty.
133
135{
136 if (fProperty == -1 && fInfo) {
139 }
140 return fProperty;
141}
142
143////////////////////////////////////////////////////////////////////////////////
144/// Stream an object of TBaseClass. Triggers the calculation of the
145/// cache variables to store them.
146
147void TBaseClass::Streamer(TBuffer& b) {
148 if (b.IsReading()) {
149 b.ReadClassBuffer(Class(), this);
150 } else {
151 // Writing.
152 // Calculate cache properties first.
153 GetDelta();
154 Property();
156 b.WriteClassBuffer(Class(), this);
157 }
158}
void Class()
Definition Class.C:29
Cppyy::TCppType_t fClass
#define b(i)
Definition RSha256.hxx:100
#define c(i)
Definition RSha256.hxx:101
int Int_t
Definition RtypesCore.h:45
long Long_t
Definition RtypesCore.h:54
#define ClassImp(name)
Definition Rtypes.h:364
@ kIsVirtualBase
Definition TDictionary.h:89
int type
Definition TGX11.cxx:121
R__EXTERN TVirtualMutex * gInterpreterMutex
R__EXTERN TInterpreter * gCling
#define R__LOCKGUARD(mutex)
Each class (see TClass) has a linked list of its base class(es).
Definition TBaseClass.h:33
Int_t GetDelta()
Get offset from "this" to part of base class.
ROOT::ESTLType IsSTLContainer()
Return which type (if any) of STL container the data member is.
const char * GetTitle() const
Get base class description (comment).
virtual ~TBaseClass()
TBaseClass dtor deletes adopted CINT BaseClassInfo object.
TBaseClass(const TBaseClass &)=delete
virtual void Browse(TBrowser *b)
Called by the browser, to browse a baseclass.
TClassRef fClassPtr
pointer to CINT base class info
Definition TBaseClass.h:50
AtomicInt_t fDelta
pointer to parent class
Definition TBaseClass.h:52
Int_t fSTLType
Definition TBaseClass.h:54
AtomicInt_t fProperty
Definition TBaseClass.h:53
BaseClassInfo_t * fInfo
Definition TBaseClass.h:49
TClass * GetClassPointer(Bool_t load=kTRUE)
Get pointer to the base class TClass.
Long_t Property() const
Get property description word. For meaning of bits see EProperty.
Using a TBrowser one can browse all ROOT objects.
Definition TBrowser.h:37
Buffer base class used for serializing objects.
Definition TBuffer.h:43
TClass instances represent classes, structs and namespaces in the ROOT type system.
Definition TClass.h:80
static TClass * GetClass(const char *name, Bool_t load=kTRUE, Bool_t silent=kFALSE)
Static method returning pointer to TClass of the specified class name.
Definition TClass.cxx:2957
This class defines an abstract interface that must be implemented by all classes that contain diction...
virtual const char * BaseClassInfo_TmpltName(BaseClassInfo_t *) const
virtual void BaseClassInfo_Delete(BaseClassInfo_t *) const
virtual ClassInfo_t * BaseClassInfo_ClassInfo(BaseClassInfo_t *) const =0
virtual Long_t BaseClassInfo_Offset(BaseClassInfo_t *, void *=0, bool=true) const
virtual const char * BaseClassInfo_FullName(BaseClassInfo_t *) const
virtual Long_t BaseClassInfo_Property(BaseClassInfo_t *) const
TString fName
Definition TNamed.h:32
virtual void SetName(const char *name)
Set the name of the TNamed.
Definition TNamed.cxx:140
virtual const char * GetTitle() const
Returns title of object.
Definition TNamed.h:48
ESTLType
Definition ESTLType.h:28
@ kSTLmap
Definition ESTLType.h:33
@ kSTLunorderedmultiset
Definition ESTLType.h:43
@ kSTLset
Definition ESTLType.h:35
@ kSTLmultiset
Definition ESTLType.h:36
@ kSTLdeque
Definition ESTLType.h:32
@ kSTLvector
Definition ESTLType.h:30
@ kSTLunorderedmultimap
Definition ESTLType.h:45
@ kSTLunorderedset
Definition ESTLType.h:42
@ kSTLlist
Definition ESTLType.h:31
@ kSTLforwardlist
Definition ESTLType.h:41
@ kSTLunorderedmap
Definition ESTLType.h:44
@ kNotSTL
Definition ESTLType.h:29
@ kSTLmultimap
Definition ESTLType.h:34