[Lldb-commits] [lldb] [lldb] Make SBType::FindDirectNestedType work with expression ASTs (PR #89183)

Vlad Serebrennikov via lldb-commits lldb-commits at lists.llvm.org
Thu Apr 18 01:30:49 PDT 2024


Endilll wrote:

> One thing I'd like to get feedback on is whether this should be looking into base classes. The discussion on the original PR focuses on lexically nested types, but going through base classes (following usual language rules) is another form of nesting. Both the existing and the new implementations don't do that, but I think it would be more natural to do it. Of course, then the function can definitely return more than one result...

What you're describing here is in line with member lookup described in the Standard. While it might be a useful facility, it's at odds with the intent of `FindDirectNestedTypes()` to be a small building block for efficient AST traversal. For the use case I have for this function, any amount of lookup is going to regress the performance of the formatter, and subsequently responsiveness of the debugger. So if you're going to pursue this, I suggest exposing this as a new function.

https://github.com/llvm/llvm-project/pull/89183


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