This is how Rust Analyzers intellisense works, it uses a query engine called Salsa that stores the symbols in a database and the linting and completion/semantic

This is how Rust Analyzers intellisense works, it uses a query engine called Salsa that stores the symbols in a database and the linting and completion/semantics are entirely query-driven: https://github.com/salsa-rs/salsa https://github.com/salsa-rs/salsa Good video describing it's use for working with Rust's AST: https://youtu.be/i_IhACacPRY?t=1348 https://youtu.be/i_IhACacPRY?t=1348