8531f4b3ca
## Summary https://github.com/astral-sh/ty/issues/214 will require a couple invasive changes that I would like to get merged even before garbage collection is fully implemented (to avoid rebasing): - `ParsedModule` can no longer be dereferenced directly. Instead you need to load a `ParsedModuleRef` to access the AST, which requires a reference to the salsa database (as it may require re-parsing the AST if it was collected). - `AstNodeRef` can only be dereferenced with the `node` method, which takes a reference to the `ParsedModuleRef`. This allows us to encode the fact that ASTs do not live as long as the database and may be collected as soon a given instance of a `ParsedModuleRef` is dropped. There are a number of places where we currently merge the `'db` and `'ast` lifetimes, so this requires giving some types/functions two separate lifetime parameters.
Ruff Formatter
The Ruff formatter is an extremely fast Python code formatter that ships as part of the ruff
CLI.
Goals
The formatter is designed to be a drop-in replacement for Black, but with an excessive focus on performance and direct integration with Ruff.
Specifically, the formatter is intended to emit near-identical output when run over Black-formatted code. When run over extensive Black-formatted projects like Django and Zulip, > 99.9% of lines are formatted identically. When migrating an existing project from Black to Ruff, you should expect to see a few differences on the margins, but the vast majority of your code should be unchanged.
If you identify deviations in your project, spot-check them against the intentional deviations enumerated below, as well as the unintentional deviations filed in the issue tracker. If you've identified a new deviation, please file an issue.
When run over non-Black-formatted code, the formatter makes some different decisions than Black, and so more deviations should be expected, especially around the treatment of end-of-line comments. For details, see Style Guide.
Getting started
Head to The Ruff Formatter for usage instructions and a comparison to Black.