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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
bool Bool_t
Definition: RtypesCore.h:63
#define ClassImp(name)
Definition: Rtypes.h:364
@ kIsVirtualBase
Definition: TDictionary.h:89
int type
Definition: TGX11.cxx:121
R__EXTERN TVirtualMutex * gInterpreterMutex
Definition: TInterpreter.h:44
R__EXTERN TInterpreter * gCling
Definition: TInterpreter.h:563
#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.
Definition: TBaseClass.cxx:75
ROOT::ESTLType IsSTLContainer()
Return which type (if any) of STL container the data member is.
Definition: TBaseClass.cxx:101
const char * GetTitle() const
Get base class description (comment).
Definition: TBaseClass.cxx:92
virtual ~TBaseClass()
TBaseClass dtor deletes adopted CINT BaseClassInfo object.
Definition: TBaseClass.cxx:46
TBaseClass(const TBaseClass &)=delete
virtual void Browse(TBrowser *b)
Called by the browser, to browse a baseclass.
Definition: TBaseClass.cxx:54
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.
Definition: TBaseClass.cxx:63
Long_t Property() const
Get property description word. For meaning of bits see EProperty.
Definition: TBaseClass.cxx:134
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:2955
This class defines an abstract interface that must be implemented by all classes that contain diction...
Definition: TDictionary.h:167
virtual const char * BaseClassInfo_TmpltName(BaseClassInfo_t *) const
Definition: TInterpreter.h:454
virtual void BaseClassInfo_Delete(BaseClassInfo_t *) const
Definition: TInterpreter.h:442
virtual Longptr_t BaseClassInfo_Offset(BaseClassInfo_t *, void *=0, bool=true) const
Definition: TInterpreter.h:448
virtual ClassInfo_t * BaseClassInfo_ClassInfo(BaseClassInfo_t *) const =0
virtual const char * BaseClassInfo_FullName(BaseClassInfo_t *) const
Definition: TInterpreter.h:452
virtual Long_t BaseClassInfo_Property(BaseClassInfo_t *) const
Definition: TInterpreter.h:449
TString fName
Definition: TNamed.h:32
virtual void SetName(const char *name)
Set the name of the TNamed.
Definition: TNamed.cxx:140
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