sammccall added a comment.

In D90750#2378987 <https://reviews.llvm.org/D90750#2378987>, @kadircet wrote:

> The index has the following query semantics:

Rehashing offline conversation:

- These heuristics mostly amount to guessing which high-level operation is 
being performed. It's a non-obvious place to put this logic, and it's hard to 
fix without fallout when the guess is wrong.
- These guesses will get stale. e.g. this queries all indexes for relations, 
but one index for lookup. We'd like to use both for Hover soon.

Our conclusion was we could query one index by default, and allow callers to 
override this using a context variable.
The arguments for a context variable vs attributes on request:

- it naturally applies to batches of requests
- it's a less invasive change
- it "hides" the option from other indexes

I'm not that sure about this implementation choice, but it also probably 
doesn't matter much.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D90750/new/

https://reviews.llvm.org/D90750

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