Merge pull request #76250 from ktoso/wip-experimental-isolated-deinit

lib/AST/Decl.cpp

@@ -1033,6 +1033,26 @@ std::optional<CustomAttrNominalPair> Decl::getGlobalActorAttr() const {
       ctx.evaluator, GlobalActorAttributeRequest{mutableThis}, std::nullopt);
 }
 
+bool Decl::hasExplicitIsolationAttribute() const {
+  if (auto nonisolatedAttr = getAttrs().getAttribute<NonisolatedAttr>()) {
+    if (!nonisolatedAttr->isImplicit())
+      return true;
+  }
+
+  if (auto isolatedAttr = getAttrs().getAttribute<IsolatedAttr>()) {
+    if (!isolatedAttr->isImplicit()) {
+      return true;
+    }
+  }
+
+  if (auto globalActorAttr = getGlobalActorAttr()) {
+    if (!globalActorAttr->first->isImplicit())
+      return true;
+  }
+
+  return false;
+}
+
 bool Decl::preconcurrency() const {
   if (getAttrs().hasAttribute<PreconcurrencyAttr>())
     return true;
@@ -3358,6 +3378,16 @@ ValueDecl *ValueDecl::getOverriddenDecl() const {
   return overridden.front();
 }
 
+ValueDecl *ValueDecl::getOverriddenDeclOrSuperDeinit() const {
+  if (auto overridden = getOverriddenDecl()) {
+    return overridden;
+  }
+  if (auto dtor = dyn_cast<DestructorDecl>(this)) {
+    return dtor->getSuperDeinit();
+  }
+  return nullptr;
+}
+
 bool ValueDecl::overriddenDeclsComputed() const {
   return LazySemanticInfo.hasOverriddenComputed;
 }
@@ -10603,6 +10633,16 @@ ObjCSelector DestructorDecl::getObjCSelector() const {
   return ObjCSelector(ctx, 0, ctx.Id_dealloc);
 }
 
+DestructorDecl *DestructorDecl::getSuperDeinit() const {
+  auto declContext = getDeclContext()->getImplementedObjCContext();
+  if (auto classDecl = dyn_cast<ClassDecl>(declContext)) {
+    if (auto superclass = classDecl->getSuperclassDecl()) {
+      return superclass->getDestructor();
+    }
+  }
+  return nullptr;
+}
+
 SourceRange FuncDecl::getSourceRange() const {
   SourceLoc StartLoc = getStartLoc();