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Fix Issue #6443: spurrious auto-parsing due to @ class, pair, __pair_base and enums #6445

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Merged
pcanal merged 17 commits into from
Oct 14, 2020
Merged

Fix Issue #6443: spurrious auto-parsing due to @ class, pair, __pair_base and enums #6445

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8d2567b
fix off by one error in pair auto-parsing skipping
pcanal Sep 23, 2020
9ca6572
Also avoid auto-parsing for __pair_base during I/O init
pcanal Sep 23, 2020
72c723b
Avoid auto-parsing if we can tell early that the name is an enumerator.
pcanal Sep 24, 2020
cd04b64
Avoid spurrious auto-loading/parsing due to artificial classes.
pcanal Sep 24, 2020
2787835
[NFC] white space
pcanal Sep 24, 2020
c7930cf
Introduce TClassEdit::IsArtificial to wrap the '@' search.
pcanal Sep 24, 2020
fe77942
Do not (inadvertently) stip the @@ suffix for emulated class template…
pcanal Sep 25, 2020
d51fa31
Add TClassEdit::IsStdPair to factor out all the comparison
pcanal Sep 26, 2020
19f417d
Use TClassEdit::IsStdPair
pcanal Sep 26, 2020
94b5a72
In CheckClassInfo suspend autoparsing for std::pair
pcanal Sep 26, 2020
e311a8a
Migrate R__GenerateTClassForPair to TVirtualStreamerInfo::GenerateInf…
pcanal Sep 25, 2020
84cb8a5
TClass::GetClass uses GenerateInfoForPair rather than auto-parsing
pcanal Sep 25, 2020
2c274dc
Remove restriction (from circa 2005) that is no longer true.
pcanal Sep 26, 2020
9b1058a
Do not generate TClass for pair of unknown type(s).
pcanal Sep 28, 2020
2fb16c9
[NFC] extend documentation for some of std::pair handling code
pcanal Sep 28, 2020
3936c2f
TCling::CheckClassInfo switch suspensions to use RAII object.
pcanal Sep 29, 2020
0005d17
Avoid auto-parsing upon seeing __pair_base
pcanal Sep 30, 2020
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Introduce TClassEdit::IsArtificial to wrap the '@' search. 
just in case we need to make it more complexe and/or replace it at a later date
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@pcanal
pcanal committed Sep 30, 2020
commit c7930cfc7c323cbaa261a1bb755e2523d45b99fb
2 changes: 2 additions & 0 deletions core/foundation/inc/TClassEdit.h
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Expand Up @@ -155,6 +155,8 @@ namespace TClassEdit {
void Init(TClassEdit::TInterpreterLookupHelper *helper);

std::string CleanType (const char *typeDesc,int mode = 0,const char **tail=0);
inline bool IsArtificial(std::string_view name) { return name.find('@') != name.npos; }
inline bool IsArtificial(ROOT::Internal::TStringView name) {return IsArtificial(std::string_view(name)); }
bool IsDefAlloc(const char *alloc, const char *classname);
bool IsDefAlloc(const char *alloc, const char *keyclassname, const char *valueclassname);
bool IsDefComp (const char *comp , const char *classname);
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2 changes: 1 addition & 1 deletion core/foundation/src/TClassEdit.cxx
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Expand Up @@ -839,7 +839,7 @@ void TClassEdit::GetNormalizedName(std::string &norm_name, std::string_view name

norm_name = std::string(name); // NOTE: Is that the shortest version?

if (name.find('@')) {
if (TClassEdit::IsArtificial(name)) {
// If there is a @ symbol (followed by a version number) then this is a synthetic class name created
// from an already normalized name for the purpose of supporting schema evolution.
return;
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8 changes: 4 additions & 4 deletions core/meta/src/TClass.cxx
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Expand Up @@ -1109,7 +1109,7 @@ TClass::TClass(const char *name, Bool_t silent) :
::Fatal("TClass::TClass", "gInterpreter not initialized");

gInterpreter->SetClassInfo(this); // sets fClassInfo pointer
if (!silent && !fClassInfo && fName.First('@')==kNPOS)
if (!silent && !fClassInfo && !TClassEdit::IsArtificial(name))
::Warning("TClass::TClass", "no dictionary for class %s is available", name);
ResetBit(kLoading);

Expand Down Expand Up @@ -1445,7 +1445,7 @@ void TClass::Init(const char *name, Version_t cversion,
// We need to check if the class it is not fwd declared for the cases where we
// created a TClass directly in the kForwardDeclared state. Indeed in those cases
// fClassInfo will always be nullptr.
if (fState!=kForwardDeclared && !fClassInfo && fName.First('@')==kNPOS) {
if (fState!=kForwardDeclared && !fClassInfo && !TClassEdit::IsArtificial(fName)) {

if (fState == kHasTClassInit) {
// If the TClass is being generated from a ROOT dictionary,
Expand Down Expand Up @@ -1483,7 +1483,7 @@ void TClass::Init(const char *name, Version_t cversion,
}
}
}
if (!silent && (!fClassInfo && !fCanLoadClassInfo) && !isStl && fName.First('@')==kNPOS &&
if (!silent && (!fClassInfo && !fCanLoadClassInfo) && !isStl && !TClassEdit::IsArtificial(fName) &&
!TClassEdit::IsInterpreterDetail(fName.Data()) ) {
if (fState == kHasTClassInit) {
if (fImplFileLine == -1 && fClassVersion == 0) {
Expand Down Expand Up @@ -2971,7 +2971,7 @@ TClass *TClass::GetClass(const char *name, Bool_t load, Bool_t silent)
load = kTRUE;
}

if (strchr(name, '@') != nullptr) {
if (TClassEdit::IsArtificial(name)) {
// If there is a @ symbol (followed by a version number) then this is a synthetic class name created
// from an already normalized name for the purpose of supporting schema evolution.
// There is no dictionary or interpreter information about this kind of class, the only
Expand Down