Is there a builtin way in regex to get the "depth" of a capture ?

[NovaliX-Dev]

By depth i mean by how many other captures a specific one is surrounded.

For example :

• (bla(?<a>[[:alpha:]]*)) : Here the capture a will have the depth 2
• (bla) : this unnamed capture will have a depth 1

Is this a feature already implemented in regex ? Or should i make a feature request for it ?

[BurntSushi]

You can do it manually by getting an Hir from regex-syntax and computing the depth yourself.

I don't see a reason to provide anything more convenient in the API.