We don't share the query infrastructure in rust-analyzer, but rust-analyzer is a query-driven system. We use Salsa (https://github.com/salsa-rs/salsa/), which is strongly inspired by rustc's query system, down to the underlying red/green algorithm (https://rustc-dev-guide.rust-lang.org/queries/incremental-co...), hence the name: Salsa.
We don't share the query infrastructure in rust-analyzer, but rust-analyzer is a query-driven system. We use Salsa (https://github.com/salsa-rs/salsa/), which is strongly inspired by rustc's query system, down to the underlying red/green algorithm (https://rustc-dev-guide.rust-lang.org/queries/incremental-co...), hence the name: Salsa.