================
@@ -477,6 +485,100 @@ void DiagnosticsEngine::setSeverityForAll(diag::Flavor
Flavor,
setSeverity(Diag, Map, Loc);
}
+namespace {
+class WarningsSpecialCaseList : public llvm::SpecialCaseList {
+public:
+ static std::unique_ptr<WarningsSpecialCaseList>
+ create(const llvm::MemoryBuffer &MB, std::string &Err) {
+ auto SCL = std::make_unique<WarningsSpecialCaseList>();
+ if (SCL->createInternal(&MB, Err))
+ return SCL;
+ return nullptr;
+ }
+
+ // Section names refer to diagnostic groups, which cover multiple individual
+ // diagnostics. Expand diagnostic groups here to individual diagnostics.
+ // A diagnostic can have multiple diagnostic groups associated with it, we
let
+ // the last section take precedence in such cases.
+ void processSections(DiagnosticsEngine &Diags) {
+ // Drop the default section introduced by special case list, we only
support
+ // exact diagnostic group names.
+ Sections.erase("*");
+ // Make sure we iterate sections by their line numbers.
+ std::vector<std::pair<unsigned, const llvm::StringMapEntry<Section> *>>
+ LineAndSection;
+ for (const auto &Entry : Sections) {
+ LineAndSection.emplace_back(
+ Entry.second.SectionMatcher->Globs.at(Entry.first()).second, &Entry);
+ }
+ llvm::sort(LineAndSection);
+ static constexpr auto kFlavor = clang::diag::Flavor::WarningOrError;
+ for (const auto &[_, Entry] : LineAndSection) {
+ SmallVector<diag::kind, 256> GroupDiags;
+ if (Diags.getDiagnosticIDs()->getDiagnosticsInGroup(
+ kFlavor, Entry->first(), GroupDiags)) {
+ StringRef Suggestion =
+ DiagnosticIDs::getNearestOption(kFlavor, Entry->first());
+ Diags.Report(diag::warn_unknown_diag_option)
+ << static_cast<unsigned>(kFlavor) << Entry->first()
+ << !Suggestion.empty() << Suggestion;
+ continue;
+ }
+ for (auto D : GroupDiags)
+ DiagToSection[D] = &Entry->getValue();
+ }
+ }
+
+ bool isDiagSuppressed(diag::kind D, llvm::StringRef FilePath) const {
+ auto Section = DiagToSection.find(D);
+ if (Section == DiagToSection.end())
+ return false;
+ auto SrcEntries = Section->second->Entries.find("src");
+ if (SrcEntries == Section->second->Entries.end())
+ return false;
+ // Find the longest glob pattern that matches FilePath. A positive match
+ // implies D should be suppressed for FilePath.
+ llvm::StringRef LongestMatch;
+ bool LongestWasNegative;
----------------
bricknerb wrote:
Initialize.
https://github.com/llvm/llvm-project/pull/112517
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