154     : ExternalSource(nullptr), isMultiplexExternalSource(false),  in Sema()
432     delete ExternalSource;  in ~Sema()
502   if (!ExternalSource) {  in addExternalSource()
503     ExternalSource = E;  in addExternalSource()
508     static_cast<MultiplexExternalSemaSource*>(ExternalSource)->addSource(*E);  in addExternalSource()
510     ExternalSource = new MultiplexExternalSemaSource(*ExternalSource, *E);  in addExternalSource()
835   if (!ExternalSource)  in LoadExternalWeakUndeclaredIdentifiers()
839   ExternalSource->ReadWeakUndeclaredIdentifiers(WeakIDs);  in LoadExternalWeakUndeclaredIdentifiers()
926   if (ExternalSource)  in emitAndClearUnusedLocalTypedefWarnings()
927     ExternalSource->ReadUnusedLocalTypedefNameCandidates(  in emitAndClearUnusedLocalTypedefWarnings()
986   if (ExternalSource) {  in ActOnEndOfTranslationUnitFragment()
989     ExternalSource->ReadPendingInstantiations(Pending);  in ActOnEndOfTranslationUnitFragment()
1112     if (ExternalSource)  in ActOnEndOfTranslationUnit()
1113       ExternalSource->ReadUndefinedButUsed(UndefinedButUsed);  in ActOnEndOfTranslationUnit()
1182             T = TentativeDefinitions.begin(ExternalSource),  in ActOnEndOfTranslationUnit()
1227            I = UnusedFileScopedDecls.begin(ExternalSource),  in ActOnEndOfTranslationUnit()
1308     if (ExternalSource)  in ActOnEndOfTranslationUnit()
1309       ExternalSource->ReadMismatchingDeleteExpressions(DeleteExprs);  in ActOnEndOfTranslationUnit()
1673   if (ExternalSource)  in emitDeferredDiags()
1674     ExternalSource->ReadDeclsToCheckForDeferredDiags(  in emitDeferredDiags()