C++: get superclasses type index from type index

Question

I have a template type T , that subclasses Base (must not be directly). By using

std::type_index(typeid(T)) ,

I can get a metadata object for T . Is there a way to get a std::type_index for every superclass of T , so that I can traverse the superclasses upwards until Base is reached?

I know C++ doesn't provide reflection by itself, but maybe someone knows some template magic.

In detail: I want to put pointers of objects into a map, indexed by the objects type. It would be nice to be able to insert the objects not just as their own type, but as their supertypes, too.

Answer 1

似乎您正在寻找类似std :: bases之类的东西，它在c ++标准中不支持，但在gcc中实现（您可以在此处阅读更多内容）。