## Summary
[Internal design
document](https://www.notion.so/astral-sh/In-editor-settings-19e48797e1ca807fa8c2c91b689d9070?pvs=4)
This PR expands `ruff.configuration` to allow inline configuration
directly in the editor. For example:
```json
{
"ruff.configuration": {
"line-length": 100,
"lint": {
"unfixable": ["F401"],
"flake8-tidy-imports": {
"banned-api": {
"typing.TypedDict": {
"msg": "Use `typing_extensions.TypedDict` instead"
}
}
}
},
"format": {
"quote-style": "single"
}
}
}
```
This means that now `ruff.configuration` accepts either a path to
configuration file or the raw config itself. It's _mostly_ similar to
`--config` with one difference that's highlighted in the following
section. So, it can be said that the format of `ruff.configuration` when
provided the config map is same as the one on the [playground] [^1].
## Limitations
<details><summary><b>Casing (<code>kebab-case</code> v/s/
<code>camelCase</code>)</b></summary>
<p>
The config keys needs to be in `kebab-case` instead of `camelCase` which
is being used for other settings in the editor.
This could be a bit confusing. For example, the `line-length` option can
be set directly via an editor setting or can be configured via
`ruff.configuration`:
```json
{
"ruff.configuration": {
"line-length": 100
},
"ruff.lineLength": 120
}
```
#### Possible solution
We could use feature flag with [conditional
compilation](https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg_attr-attribute)
to indicate that when used in `ruff_server`, we need the `Options`
fields to be renamed as `camelCase` while for other crates it needs to
be renamed as `kebab-case`. But, this might not work very easily because
it will require wrapping the `Options` struct and create two structs in
which we'll have to add `#[cfg_attr(...)]` because otherwise `serde`
will complain:
```
error: duplicate serde attribute `rename_all`
--> crates/ruff_workspace/src/options.rs:43:38
|
43 | #[cfg_attr(feature = "editor", serde(rename_all = "camelCase"))]
| ^^^^^^^^^^
```
</p>
</details>
<details><summary><b>Nesting (flat v/s nested keys)</b></summary>
<p>
This is the major difference between `--config` flag on the command-line
v/s `ruff.configuration` and it makes it such that `ruff.configuration`
has same value format as [playground] [^1].
The config keys needs to be split up into keys which can result in
nested structure instead of flat structure:
So, the following **won't work**:
```json
{
"ruff.configuration": {
"format.quote-style": "single",
"lint.flake8-tidy-imports.banned-api.\"typing.TypedDict\".msg": "Use `typing_extensions.TypedDict` instead"
}
}
```
But, instead it would need to be split up like the following:
```json
{
"ruff.configuration": {
"format": {
"quote-style": "single"
},
"lint": {
"flake8-tidy-imports": {
"banned-api": {
"typing.TypedDict": {
"msg": "Use `typing_extensions.TypedDict` instead"
}
}
}
}
}
}
```
#### Possible solution (1)
The way we could solve this and make it same as `--config` would be to
add a manual logic of converting the JSON map into an equivalent TOML
string which would be then parsed into `Options`.
So, the following JSON map:
```json
{ "lint.flake8-tidy-imports": { "banned-api": {"\"typing.TypedDict\".msg": "Use typing_extensions.TypedDict instead"}}}
```
would need to be converted into the following TOML string:
```toml
lint.flake8-tidy-imports = { banned-api = { "typing.TypedDict".msg = "Use typing_extensions.TypedDict instead" } }
```
by recursively convering `"key": value` into `key = value` which is to
remove the quotes from key and replacing `:` with `=`.
#### Possible solution (2)
Another would be to just accept `Map<String, String>` strictly and
convert it into `key = value` and then parse it as a TOML string. This
would also match `--config` but quotes might become a nuisance because
JSON only allows double quotes and so it'll require escaping any inner
quotes or use single quotes.
</p>
</details>
## Test Plan
### VS Code
**Requires https://github.com/astral-sh/ruff-vscode/pull/702**
**`settings.json`**:
```json
{
"ruff.lint.extendSelect": ["TID"],
"ruff.configuration": {
"line-length": 50,
"format": {
"quote-style": "single"
},
"lint": {
"unfixable": ["F401"],
"flake8-tidy-imports": {
"banned-api": {
"typing.TypedDict": {
"msg": "Use `typing_extensions.TypedDict` instead"
}
}
}
}
}
}
```
Following video showcases me doing the following:
1. Check diagnostics that it includes `TID`
2. Run `Ruff: Fix all auto-fixable problems` to test `unfixable`
3. Run `Format: Document` to test `line-length` and `quote-style`
https://github.com/user-attachments/assets/0a38176f-3fb0-4960-a213-73b2ea5b1180
### Neovim
**`init.lua`**:
```lua
require('lspconfig').ruff.setup {
init_options = {
settings = {
lint = {
extendSelect = { 'TID' },
},
configuration = {
['line-length'] = 50,
format = {
['quote-style'] = 'single',
},
lint = {
unfixable = { 'F401' },
['flake8-tidy-imports'] = {
['banned-api'] = {
['typing.TypedDict'] = {
msg = 'Use typing_extensions.TypedDict instead',
},
},
},
},
},
},
},
}
```
Same steps as in the VS Code test:
https://github.com/user-attachments/assets/cfe49a9b-9a89-43d7-94f2-7f565d6e3c9d
## Documentation Preview
https://github.com/user-attachments/assets/e0062f58-6ec8-4e01-889d-fac76fd8b3c7
[playground]: https://play.ruff.rs
[^1]: This has one advantage that the value can be copy-pasted directly
into the playground
## Summary
This PR builds on the changes in #16220 to pass a target Python version
to the parser. It also adds the `Parser::unsupported_syntax_errors` field, which
collects version-related syntax errors while parsing. These syntax
errors are then turned into `Message`s in ruff (in preview mode).
This PR only detects one syntax error (`match` statement before Python
3.10), but it has been pretty quick to extend to several other simple
errors (see #16308 for example).
## Test Plan
The current tests are CLI tests in the linter crate, but these could be
supplemented with inline parser tests after #16357.
I also tested the display of these syntax errors in VS Code:
---------
Co-authored-by: Alex Waygood <alex.waygood@gmail.com>
In https://github.com/astral-sh/ruff/pull/16306#discussion_r1966290700,
@carljm pointed out that #16306 introduced a terminology problem, with
too many things called a "constraint". This is a follow-up PR that
renames `Constraint` to `Predicate` to hopefully clear things up a bit.
So now we have that:
- a _predicate_ is a Python expression that might influence type
inference
- a _narrowing constraint_ is a list of predicates that constraint the
type of a binding that is visible at a use
- a _visibility constraint_ is a ternary formula of predicates that
define whether a binding is visible or a statement is reachable
This is a pure renaming, with no behavioral changes.
## Summary
Model dunder-calls correctly (and in one single place), by implementing
this behavior (using `__getitem__` as an example).
```py
def getitem_desugared(obj: object, key: object) -> object:
getitem_callable = find_in_mro(type(obj), "__getitem__")
if hasattr(getitem_callable, "__get__"):
getitem_callable = getitem_callable.__get__(obj, type(obj))
return getitem_callable(key)
```
See the new `calls/dunder.md` test suite for more information. The new
behavior also needs much fewer lines of code (the diff is positive due
to new tests).
## Test Plan
New tests; fix TODOs in existing tests.
This PR adds an implementation of [association
lists](https://en.wikipedia.org/wiki/Association_list), and uses them to
replace the previous `BitSet`/`SmallVec` representation for narrowing
constraints.
An association list is a linked list of key/value pairs. We additionally
guarantee that the elements of an association list are sorted (by their
keys), and that they do not contain any entries with duplicate keys.
Association lists have fallen out of favor in recent decades, since you
often need operations that are inefficient on them. In particular,
looking up a random element by index is O(n), just like a linked list;
and looking up an element by key is also O(n), since you must do a
linear scan of the list to find the matching element. Luckily we don't
need either of those operations for narrowing constraints!
The typical implementation also suffers from poor cache locality and
high memory allocation overhead, since individual list cells are
typically allocated separately from the heap. We solve that last problem
by storing the cells of an association list in an `IndexVec` arena.
---------
Co-authored-by: Carl Meyer <carl@astral.sh>
I am working on a project that uses ruff linters' docs to generate a
fine-tuning dataset for LLMs.
To achieve this, I first ran the command `ruff rule --all
--output-format json` to retrieve all the rules. Then, I parsed the
explanation field to get these 3 consistent sections:
- `Why is this bad?`
- `What it does`
- `Example`
However, during the initial processing, I noticed that the markdown
headings are not that consistent. For instance:
- In most cases, `Use instead` appears as a normal paragraph within the
`Example` section, but in the file
`crates/ruff_linter/src/rules/flake8_bandit/rules/django_extra.rs` it is
a level-2 heading
- The heading "What it does**?**" is used in some places, while others
consistently use "What it does"
- There are 831 `Example` headings and 65 `Examples`. But all of them
only have one example case
This PR normalized these across all rules.
## Test Plan
CI are passed.
## Summary
Add a diagnostic if a pure instance variable is accessed on a class object. For example
```py
class C:
instance_only: str
def __init__(self):
self.instance_only = "a"
# error: Attribute `instance_only` can only be accessed on instances, not on the class object `Literal[C]` itself.
C.instance_only
```
---------
Co-authored-by: David Peter <mail@david-peter.de>
## Summary
This PR is another step in preparing to detect syntax errors in the
parser. It introduces the new `per-file-target-version` top-level
configuration option, which holds a mapping of compiled glob patterns to
Python versions. I intend to use the
`LinterSettings::resolve_target_version` method here to pass to the
parser:
f50849aeef/crates/ruff_linter/src/linter.rs (L491-L493)
## Test Plan
I added two new CLI tests to show that the `per-file-target-version` is
respected in both the formatter and the linter.
## Summary
Add support for `@classmethod`s.
```py
class C:
@classmethod
def f(cls, x: int) -> str:
return "a"
reveal_type(C.f(1)) # revealed: str
```
## Test Plan
New Markdown tests
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [clap](https://redirect.github.com/clap-rs/clap) |
workspace.dependencies | patch | `4.5.29` -> `4.5.30` |
---
> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.
---
### Release Notes
<details>
<summary>clap-rs/clap (clap)</summary>
###
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[Compare
Source](https://redirect.github.com/clap-rs/clap/compare/v4.5.29...v4.5.30)
##### Fixes
- *(assert)* Allow `num_args(0..=1)` to be used with `SetTrue`
- *(assert)* Clean up rendering of `takes_values` assertions
</details>
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|---|---|---|---|
| [tempfile](https://stebalien.com/projects/tempfile-rs/)
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- Fix build with `windows-sys` 0.52. Unfortunately, we have no CI for
older `windows-sys` versions at the moment...
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## Summary
* Existing example did not include RawSQL() call like it should
* Also clarify the example a bit to make it clearer that the code is not
secure
## Test Plan
N/A, only documentation updated
## Summary
I spotted a minor mistake in my descriptor protocol implementation where
`C.descriptor` would pass the meta type (`type`) of the type of `C`
(`Literal[C]`) as the owner argument to `__get__`, instead of passing
`Literal[C]` directly.
## Test Plan
New test.
Two related changes. For context:
1. We were maintaining two separate arenas of `Constraint`s in each
use-def map. One was used for narrowing constraints, and the other for
visibility constraints. The visibility constraint arena was interned,
ensuring that we always used the same ID for any particular
`Constraint`. The narrowing constraint arena was not interned.
2. The TDD code relies on _all_ TDD nodes being interned and reduced.
This is an important requirement for TDDs to be a canonical form, which
allows us to use a single int comparison to test for "always true/false"
and to compare two TDDs for equivalence. But we also need to support an
individual `Constraint` having multiple values in a TDD evaluation (e.g.
to handle a `while` condition having different values the first time
it's evaluated vs later times). Previously, we handled that by
introducing a "copy" number, which was only there as a disambiguator, to
allow an interned, deduplicated constraint ID to appear in the TDD
formula multiple times.
A better way to handle (2) is to not intern the constraints in the
visibility constraint arena! The caller now gets to decide: if they add
a `Constraint` to the arena more than once, they get distinct
`ScopedConstraintId`s — which the TDD code will treat as distinct
variables, allowing them to take on different values in the ternary
function.
With that in place, we can then consolidate on a single (non-interned)
arena, which is shared for both narrowing and visibility constraints.
---------
Co-authored-by: Carl Meyer <carl@astral.sh>
## Summary
Resolves 3/4 requests in #16217:
- ✅ Remove not special methods: `__cmp__`, `__div__`, `__nonzero__`, and
`__unicode__`.
- ✅ Add special methods: `__next__`, `__buffer__`, `__class_getitem__`,
`__mro_entries__`, `__release_buffer__`, and `__subclasshook__`.
- ✅ Support positional-only arguments.
- ❌ Add support for module functions `__dir__` and `__getattr__`. As
mentioned in the issue the check is scoped for methods rather than
module functions. I am hesitant to expand the scope of this check
without a discussion.
## Test Plan
- Manually confirmed each example file from the issue functioned as
expected.
- Ran cargo nextest to ensure `unexpected_special_method_signature` test
still passed.
Fixes#16217.
## Summary
This is just a small refactor to move workspace related structs and impl
out from `server.rs` where `Server` is defined and into a new
`workspace.rs`.
Update to latest Salsa main branch. This provides a point of comparison
for the perf impact of fixpoint iteration, which is based on latest
Salsa main.
This requires an update to the locked version of our boxcar dep, since
Salsa now depends on a newer version of boxcar.
