f2a86fcfda
## Summary This implements checking of calls. I ended up following Micha's original suggestion from back when the signature representation was first introduced, and flattening it to a single array of parameters. This turned out to be easier to manage, because we can represent parameters using indices into that array, and represent the bound argument types as an array of the same length. Starred and double-starred arguments are still TODO; these won't be very useful until we have generics. The handling of diagnostics is just hacked into `return_ty_result`, which was already inconsistent about whether it emitted diagnostics or not; now it's even more inconsistent. This needs to be addressed, but could be a follow-up. The new benchmark errors here surface the need for intersection support in `is_assignable_to`. Fixes #14161. ## Test Plan Added mdtests.
Ruff Benchmarks
The ruff_benchmark crate benchmarks the linter and the formatter on individual files:
# Run once on the "baseline".
cargo bench -p ruff_benchmark -- --save-baseline=main
# Compare against the "baseline".
cargo bench -p ruff_benchmark -- --baseline=main
# Run the lexer benchmarks.
cargo bench -p ruff_benchmark lexer -- --baseline=main
See CONTRIBUTING.md on how to use these benchmarks.