27 changes: 27 additions & 0 deletions clang/utils/TableGen/ClangAttrEmitter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2567,6 +2567,32 @@ static void emitClangAttrIdentifierArgList(RecordKeeper &Records, raw_ostream &O
OS << "#endif // CLANG_ATTR_IDENTIFIER_ARG_LIST\n\n";
}

// Emits the indexed-argument-is-identifier property for attributes.
static void emitClangAttrStrictIdentifierArgAtIndexList(RecordKeeper &Records,
raw_ostream &OS) {
OS << "#if defined(CLANG_ATTR_STRICT_IDENTIFIER_ARG_AT_INDEX_LIST)\n";
std::vector<Record *> Attrs = Records.getAllDerivedDefinitions("Attr");

for (const auto *Attr : Attrs) {
if (!Attr->getValueAsBit("StrictEnumParameters"))
continue;
// Determine whether the first argument is an identifier.
std::vector<Record *> Args = Attr->getValueAsListOfDefs("Args");
uint64_t enumAtIndex = 0;
for (size_t i = 0; i < Args.size(); i++) {
enumAtIndex |= ((uint64_t)isIdentifierArgument(Args[0])) << i;
}
if (!enumAtIndex)
continue;

// All these spellings take an identifier argument.
forEachUniqueSpelling(*Attr, [&](const FlattenedSpelling &S) {
OS << ".Case(\"" << S.name() << "\", " << enumAtIndex << "ull)\n";
});
}
OS << "#endif // CLANG_ATTR_STRICT_IDENTIFIER_ARG_AT_INDEX_LIST\n\n";
}

static bool keywordThisIsaIdentifierInArgument(const Record *Arg) {
return !Arg->getSuperClasses().empty() &&
llvm::StringSwitch<bool>(
Expand Down Expand Up @@ -4948,6 +4974,7 @@ void EmitClangAttrParserStringSwitches(RecordKeeper &Records, raw_ostream &OS) {
emitClangAttrTypeArgList(Records, OS);
emitClangAttrLateParsedList(Records, OS);
emitClangAttrLateParsedExperimentalList(Records, OS);
emitClangAttrStrictIdentifierArgAtIndexList(Records, OS);
}

void EmitClangAttrSubjectMatchRulesParserStringSwitches(RecordKeeper &Records,
Expand Down