77   if (!ModuleScopes.empty() &&  in ActOnGlobalModuleFragmentDecl()
78       ModuleScopes.back().Module->Kind == Module::GlobalModuleFragment) {  in ActOnGlobalModuleFragmentDecl()
83     ModuleScopes.back().BeginLoc = ModuleLoc;  in ActOnGlobalModuleFragmentDecl()
134   ModuleScopes.push_back({}); // No GMF  in HandleStartOfHeaderUnit()
135   ModuleScopes.back().BeginLoc = StartOfTU;  in HandleStartOfHeaderUnit()
136   ModuleScopes.back().Module = Mod;  in HandleStartOfHeaderUnit()
137   ModuleScopes.back().ModuleInterface = true;  in HandleStartOfHeaderUnit()
138   ModuleScopes.back().IsPartition = false;  in HandleStartOfHeaderUnit()
234   assert(ModuleScopes.size() <= 1 && "expected to be at global module scope");  in ActOnModuleDecl()
242     Diag(VisibleModules.getImportLoc(ModuleScopes.back().Module),  in ActOnModuleDecl()
256         ModuleScopes.empty()  in ActOnModuleDecl()
258             : ModuleScopes.back().BeginLoc;  in ActOnModuleDecl()
374     ModuleScopes.push_back({});  in ActOnModuleDecl()
376       ModuleScopes.back().OuterVisibleModules = std::move(VisibleModules);  in ActOnModuleDecl()
383   ModuleScopes.back().BeginLoc = StartLoc;  in ActOnModuleDecl()
384   ModuleScopes.back().Module = Mod;  in ActOnModuleDecl()
385   ModuleScopes.back().ModuleInterface = MDK != ModuleDeclKind::Implementation;  in ActOnModuleDecl()
386   ModuleScopes.back().IsPartition = IsPartition;  in ActOnModuleDecl()
422   switch (ModuleScopes.empty() ? Module::GlobalModuleFragment  in ActOnPrivateModuleFragmentDecl()
423                                : ModuleScopes.back().Module->Kind) {  in ActOnPrivateModuleFragmentDecl()
434     Diag(ModuleScopes.back().BeginLoc, diag::note_previous_definition);  in ActOnPrivateModuleFragmentDecl()
441   if (!ModuleScopes.back().ModuleInterface) {  in ActOnPrivateModuleFragmentDecl()
443     Diag(ModuleScopes.back().BeginLoc,  in ActOnPrivateModuleFragmentDecl()
445         << FixItHint::CreateInsertion(ModuleScopes.back().BeginLoc, "export ");  in ActOnPrivateModuleFragmentDecl()
460           ModuleScopes.back().Module, PrivateLoc);  in ActOnPrivateModuleFragmentDecl()
464   ModuleScopes.push_back({});  in ActOnPrivateModuleFragmentDecl()
465   ModuleScopes.back().BeginLoc = ModuleLoc;  in ActOnPrivateModuleFragmentDecl()
466   ModuleScopes.back().Module = PrivateModuleFragment;  in ActOnPrivateModuleFragmentDecl()
467   ModuleScopes.back().ModuleInterface = true;  in ActOnPrivateModuleFragmentDecl()
496     assert(!ModuleScopes.empty() && "in a module purview, but no module?");  in ActOnModuleImport()
497     Module *NamedMod = ModuleScopes.back().Module;  in ActOnModuleImport()
521         << ModuleName << !ModuleScopes.back().ModuleInterface;  in ActOnModuleImport()
591   if (!ModuleScopes.empty())  in ActOnModuleImport()
592     Context.addModuleInitializer(ModuleScopes.back().Module, Import);  in ActOnModuleImport()
599   } else if (!ModuleScopes.empty() &&  in ActOnModuleImport()
600              (ModuleScopes.back().ModuleInterface ||  in ActOnModuleImport()
602                ModuleScopes.back().Module->isGlobalModule()))) {  in ActOnModuleImport()
615         << (!ModuleScopes.empty() &&  in ActOnModuleImport()
616             !ModuleScopes.back().ImplicitGlobalModuleFragment);  in ActOnModuleImport()
651     if (!ModuleScopes.empty())  in BuildModuleInclude()
652       Context.addModuleInitializer(ModuleScopes.back().Module, ImportD);  in BuildModuleInclude()
671   ModuleScopes.push_back({});  in ActOnModuleBegin()
672   ModuleScopes.back().Module = Mod;  in ActOnModuleBegin()
674     ModuleScopes.back().OuterVisibleModules = std::move(VisibleModules);  in ActOnModuleBegin()
694     VisibleModules = std::move(ModuleScopes.back().OuterVisibleModules);  in ActOnModuleEnd()
700   assert(!ModuleScopes.empty() && ModuleScopes.back().Module == Mod &&  in ActOnModuleEnd()
702   ModuleScopes.pop_back();  in ActOnModuleEnd()
771   } else if (!ModuleScopes.back().ModuleInterface) {  in ActOnStartExportDecl()
773     Diag(ModuleScopes.back().BeginLoc,  in ActOnStartExportDecl()
775         << FixItHint::CreateInsertion(ModuleScopes.back().BeginLoc, "export ");  in ActOnStartExportDecl()
778   } else if (ModuleScopes.back().Module->Kind ==  in ActOnStartExportDecl()
781     Diag(ModuleScopes.back().BeginLoc, diag::note_private_module_fragment);  in ActOnStartExportDecl()
991   ModuleScopes.push_back({BeginLoc, GlobalModuleFragment,  in PushGlobalModuleFragment()
1002   assert(!ModuleScopes.empty() && getCurrentModule()->isGlobalModule() &&  in PopGlobalModuleFragment()
1004   ModuleScopes.pop_back();  in PopGlobalModuleFragment()