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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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Avoid auto-parsing upon seeing __pair_base
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@pcanal
pcanal committed Sep 30, 2020
commit 0005d17fa38c8acd5947072e5fe14cbe48aef703
5 changes: 5 additions & 0 deletions core/foundation/inc/TClassEdit.h
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Original file line number Diff line number Diff line change
Expand Up @@ -192,6 +192,11 @@ namespace TClassEdit {
return 0 == name.compare(0, 10, "std::pair<") || 0 == name.compare(0, 5, "pair<");
}
inline bool IsStdPair(ROOT::Internal::TStringView name) {return IsStdPair(std::string_view(name)); }
inline bool IsStdPairBase(std::string_view name)
{
return 0 == name.compare(0, 17, "std::__pair_base<") || 0 == name.compare(0, 12, "__pair_base<");
}
inline bool IsStdPairBase(ROOT::Internal::TStringView name) {return IsStdPair(std::string_view(name)); }
inline std::string GetUniquePtrType(std::string_view name)
{
// Find the first template parameter
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5 changes: 3 additions & 2 deletions core/meta/src/TClass.cxx
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Expand Up @@ -3049,6 +3049,7 @@ TClass *TClass::GetClass(const char *name, Bool_t load, Bool_t silent)
// kEmulated state) so that they have proper interpreter (ClassInfo) information which
// will be used to create the TProtoClass (if one is requested for the pair).
const bool ispair = TClassEdit::IsStdPair(normalizedName) && !IsFromRootCling();
const bool ispairbase = TClassEdit::IsStdPairBase(normalizedName) && !IsFromRootCling();

TClass *loadedcl = 0;
if (checkTable) {
Expand All @@ -3061,7 +3062,7 @@ TClass *TClass::GetClass(const char *name, Bool_t load, Bool_t silent)
if (e)
return nullptr;
// Maybe this was a typedef: let's try to see if this is the case
if (!loadedcl && !ispair) {
if (!loadedcl && !ispair && !ispairbase) {
if (TDataType* theDataType = gROOT->GetType(normalizedName.c_str())){
// We have a typedef: we get the name of the underlying type
auto underlyingTypeName = theDataType->GetTypeName();
Expand Down Expand Up @@ -3094,7 +3095,7 @@ TClass *TClass::GetClass(const char *name, Bool_t load, Bool_t silent)
}

// Check the interpreter only after autoparsing the template if any.
{
if (!ispairbase) {
std::string::size_type posLess = normalizedName.find('<');
if (posLess != std::string::npos) {
gCling->AutoParse(normalizedName.substr(0, posLess).c_str());
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2 changes: 1 addition & 1 deletion core/metacling/src/TCling.cxx
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Expand Up @@ -4054,7 +4054,7 @@ TCling::CheckClassInfo(const char *name, Bool_t autoload, Bool_t isClassOrNamesp
};

MaybeSuspendAutoLoadParse autoLoadParseRAII( autoload );
if (TClassEdit::IsStdPair(classname))
if (TClassEdit::IsStdPair(classname) || TClassEdit::IsStdPairBase(classname))
autoLoadParseRAII.SuspendAutoParsing();

// First we want to check whether the decl exist, but _without_
Expand Down