ruff/crates/ruff_workspace
Ibraheem Ahmed 1c8849f9a8
Use Matchit to Resolve Per-File Settings (#11111)
## Summary

Continuation of https://github.com/astral-sh/ruff/pull/9444.

> When the formatter is fully cached, it turns out we actually spend
meaningful time mapping from file to `Settings` (since we use a
hierarchical approach to settings). Using `matchit` rather than
`BTreeMap` improves fully-cached performance by anywhere from 2-5%
depending on the project, and since these are all implementation details
of `Resolver`, it's minimally invasive.

`matchit` supports escaping routing characters so this change should now
be fully compatible.

## Test Plan

On my machine I'm seeing a ~3% improvement with this change.

```
hyperfine --warmup 20 -i "./target/release/main format ../airflow" "./target/release/ruff format ../airflow"
Benchmark 1: ./target/release/main format ../airflow
  Time (mean ± σ):      58.1 ms ±   1.4 ms    [User: 63.1 ms, System: 66.5 ms]
  Range (min … max):    56.1 ms …  62.9 ms    49 runs
 
Benchmark 2: ./target/release/ruff format ../airflow
  Time (mean ± σ):      56.6 ms ±   1.5 ms    [User: 57.8 ms, System: 67.7 ms]
  Range (min … max):    54.1 ms …  63.0 ms    51 runs
 
Summary
  ./target/release/ruff format ../airflow ran
    1.03 ± 0.04 times faster than ./target/release/main format ../airflow
```
2024-04-24 10:25:46 -04:00
..
src Use Matchit to Resolve Per-File Settings (#11111) 2024-04-24 10:25:46 -04:00
Cargo.toml Use Matchit to Resolve Per-File Settings (#11111) 2024-04-24 10:25:46 -04:00