[clang][ExtractAPI] Serialize platform specific unavailable attribute in symbol graphs (llvm#89277)

rdar://125622225

Author: daniel-grumberg

clang/lib/ExtractAPI/Serialization/SymbolGraphSerializer.cpp

@@ -164,27 +164,29 @@ std::optional<Array> serializeAvailability(const AvailabilityInfo &Avail) {
  if (Avail.isDefault())
  return std::nullopt;
 
- Object Availability;
  Array AvailabilityArray;
- Availability["domain"] = Avail.Domain;
- serializeObject(Availability, "introduced",
- serializeSemanticVersion(Avail.Introduced));
- serializeObject(Availability, "deprecated",
- serializeSemanticVersion(Avail.Deprecated));
- serializeObject(Availability, "obsoleted",
- serializeSemanticVersion(Avail.Obsoleted));
+
  if (Avail.isUnconditionallyDeprecated()) {
  Object UnconditionallyDeprecated;
  UnconditionallyDeprecated["domain"] = "*";
  UnconditionallyDeprecated["isUnconditionallyDeprecated"] = true;
  AvailabilityArray.emplace_back(std::move(UnconditionallyDeprecated));
  }
- if (Avail.isUnconditionallyUnavailable()) {
- Object UnconditionallyUnavailable;
- UnconditionallyUnavailable["domain"] = "*";
- UnconditionallyUnavailable["isUnconditionallyUnavailable"] = true;
- AvailabilityArray.emplace_back(std::move(UnconditionallyUnavailable));
+ Object Availability;
+
+ Availability["domain"] = Avail.Domain;
+
+ if (Avail.isUnavailable()) {
+ Availability["isUnconditionallyUnavailable"] = true;
+ } else {
+ serializeObject(Availability, "introduced",
+ serializeSemanticVersion(Avail.Introduced));
+ serializeObject(Availability, "deprecated",
+ serializeSemanticVersion(Avail.Deprecated));
+ serializeObject(Availability, "obsoleted",
+ serializeSemanticVersion(Avail.Obsoleted));
  }
+
  AvailabilityArray.emplace_back(std::move(Availability));
  return AvailabilityArray;
 }