159   std::unique_ptr<TGVarScope> CurScope;  variable
202     CurScope = std::make_unique<TGVarScope>(std::move(CurScope));  in PushScope()
206     return CurScope.get();  in PushScope()
209     CurScope = std::make_unique<TGVarScope>(std::move(CurScope), Rec);  in PushScope()
210     return CurScope.get();  in PushScope()
213     CurScope = std::make_unique<TGVarScope>(std::move(CurScope), Loop);  in PushScope()
214     return CurScope.get();  in PushScope()
217     CurScope = std::make_unique<TGVarScope>(std::move(CurScope), Multiclass);  in PushScope()
218     return CurScope.get();  in PushScope()
221     assert(ExpectedStackTop == CurScope.get() &&  in PopScope()
223     CurScope = CurScope->extractParent();  in PopScope()