## Summary
The purpose of this change is to explain how to use ruff as a language
server in Eglot with automatic formatting because I've struggle to use
it with Eglot. I've search it online and found that there are some
people also struggle too. (See [this reddit
post](https://www.reddit.com/r/emacs/comments/118mo6w/eglot_automatic_formatting/)
and
https://github.com/astral-sh/ruff-lsp/issues/19#issuecomment-1435138828)
## Test Plan
I've use this setting myself. And I will continue maintain this part as
long as I use it.
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
## Summary
When working on improving Ruff integration with Zed I noticed that it
errors out when we try to resolve a code action of a `QUICKFIX` kind;
apparently, per @dhruvmanila we shouldn't need to resolve it, as the
edit is provided in the initial response for the code action. However,
it's possible for the `resolve` call to fill out other fields (such as
`command`).
AFAICT Helix also tries to resolve the code actions unconditionally (as
in, when either `edit` or `command` is absent); so does VSC. They can
still apply the quickfixes though, as they do not error out on a failed
call to resolve code actions - Zed does. Following suit on Zed's side
does not cut it though, as we still get a log request from Ruff for that
failure (which is surfaced in the UI).
There are also other language servers (such as
[rust-analyzer](c1c9e10f72/crates/rust-analyzer/src/handlers/request.rs (L1257)))
that fill out both `command` and `edit` fields as a part of code action
resolution.
This PR makes the resolve calls for quickfix actions return the input
value.
## Test Plan
N/A
Add support for while-loop control flow.
This doesn't yet include general support for terminals and reachability;
that is wider than just while loops and belongs in its own PR.
This also doesn't yet add support for cyclic definitions in loops; that
comes with enough of its own complexity in Salsa that I want to handle
it separately.
Add a lint rule to detect if a name is definitely or possibly undefined
at a given usage.
If I create the file `undef/main.py` with contents:
```python
x = int
def foo():
z
return x
if flag:
y = x
y
```
And then run `cargo run --bin red_knot -- --current-directory
../ruff-examples/undef`, I get the output:
```
Name 'z' used when not defined.
Name 'flag' used when not defined.
Name 'y' used when possibly not defined.
```
If I modify the file to add `y = 0` at the top, red-knot re-checks it
and I get the new output:
```
Name 'z' used when not defined.
Name 'flag' used when not defined.
```
Note that `int` is not flagged, since it's a builtin, and `return x` in
the function scope is not flagged, since it refers to the global `x`.
## Summary
This PR fixes a bug to raise a syntax error when an unparenthesized
generator expression is used as an argument to a call when there are
more than one argument.
For reference, the grammar is:
```
primary:
| ...
| primary genexp
| primary '(' [arguments] ')'
| ...
genexp:
| '(' ( assignment_expression | expression !':=') for_if_clauses ')'
```
The `genexp` requires the parenthesis as mentioned in the grammar. So,
the grammar for a call expression is either a name followed by a
generator expression or a name followed by a list of argument. In the
former case, the parenthesis are excluded because the generator
expression provides them while in the later case, the parenthesis are
explicitly provided for a list of arguments which means that the
generator expression requires it's own parenthesis.
This was discovered in https://github.com/astral-sh/ruff/issues/12420.
## Test Plan
Add test cases for valid and invalid syntax.
Make sure that the parser from CPython also raises this at the parsing
step:
```console
$ python3.13 -m ast parser/_.py
File "parser/_.py", line 1
total(1, 2, x for x in range(5), 6)
^^^^^^^^^^^^^^^^^^^
SyntaxError: Generator expression must be parenthesized
$ python3.13 -m ast parser/_.py
File "parser/_.py", line 1
sum(x for x in range(10), 10)
^^^^^^^^^^^^^^^^^^^^
SyntaxError: Generator expression must be parenthesized
```
## Summary
This PR removes unused dependencies from `fuzz` crate and syncs the
`similar` crate to the workspace version. This will help in resolve
https://github.com/astral-sh/ruff/pull/12442.
## Test Plan
Build the fuzz crate:
For Mac (it requires the nightly build):
```
cargo +nightly fuzz build
```
## Summary
Fix panic reported in #12428. Where a string would sometimes get split
within a character boundary. This bypasses the need to split the string.
This does not guarantee the correct formatting of the docstring, but
neither did the previous implementation.
Resolves#12428
## Test Plan
Test case added to fixture
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## Summary
Just updating the README to reflect that IBM has been using ruff for a
year already: https://github.com/Qiskit/qiskit/pull/10116.
## Summary
These are the first rules implemented as part of #458, but I plan to
implement more.
Specifically, this implements `docstring-missing-exception` which checks
for raised exceptions not documented in the docstring, and
`docstring-extraneous-exception` which checks for exceptions in the
docstring not present in the body.
## Test Plan
Test fixtures added for both google and numpy style.
When poring over traces, the ones that just include a definition or
symbol or expression ID aren't very useful, because you don't know which
file it comes from. This adds that information to the trace.
I guess the downside here is that if calling `.file(db)` on a
scope/definition/expression would execute other traced code, it would be
marked as outside the span? I don't think that's a concern, because I
don't think a simple field access on a tracked struct should ever
execute our code. If I'm wrong and this is a problem, it seems like the
tracing crate has this feature where you can record a field as
`tracing::field::Empty` and then fill in its value later with
`span.record(...)`, but when I tried this it wasn't working for me, not
sure why.
I think there's a lot more we can do to make our tracing output more
useful for debugging (e.g. record an event whenever a
definition/symbol/expression/use id is created with the details of that
definition/symbol/expression/use), this is just dipping my toes in the
water.
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
This PR updates D301 rule to allow inclduing escaped docstring, e.g.
`\"""Foo.\"""` or `\"\"\"Bar.\"\"\"`, within a docstring.
Related issue: #12152
## Test Plan
Add more test cases to D301.py and update the snapshot file.
<!-- How was it tested? -->
In preparation for supporting resolving builtins, simplify the benchmark
so it doesn't look up `str`, which is actually a complex builtin to deal
with because it inherits `Sequence[str]`.
Co-authored-by: Alex Waygood <alex.waygood@gmail.com>
Per comments in https://github.com/astral-sh/ruff/pull/12269, "module
global" is kind of long, and arguably redundant.
I tried just using "module" but there were too many cases where I felt
this was ambiguous. I like the way "global" works out better, though it
does require an understanding that in Python "global" generally means
"module global" not "globally global" (though in a sense module globals
are also globally global since modules are singletons).
Support falling back to a global name lookup if a name isn't defined in
the local scope, in the cases where that is correct according to Python
semantics.
In class scopes, a name lookup checks the local namespace first, and if
the name isn't found there, looks it up in globals.
In function scopes (and type parameter scopes, which are function-like),
if a name has any definitions in the local scope, it is a local, and
accessing it when none of those definitions have executed yet just
results in an `UnboundLocalError`, it does not fall back to a global. If
the name does not have any definitions in the local scope, then it is an
implicit global.
Public symbol type lookups never include such a fall back. For example,
if a name is not defined in a class scope, it is not available as a
member on that class, even if a name lookup within the class scope would
have fallen back to a global lookup.
This PR makes the `@override` lint rule work again.
Not yet included/supported in this PR:
* Support for free variables / closures: a free symbol in a nested
function-like scope referring to a symbol in an outer function-like
scope.
* Support for `global` and `nonlocal` statements, which force a symbol
to be treated as global or nonlocal even if it has definitions in the
local scope.
* Module-global lookups should fall back to builtins if the name isn't
found in the module scope.
I would like to expose nicer APIs for the various kinds of symbols
(explicit global, implicit global, free, etc), but this will also wait
for a later PR, when more kinds of symbols are supported.
We can't just directly update the `release.yml` file because that's
auto-generated using `cargo-dist`. So, update the permissions in
`Cargo.toml` and then use `cargo dist generate` to make sure there's no
diff.
Adds inference tests sufficient to give full test coverage of the
`UseDefMapBuilder::merge` method.
In the process I realized that we could implement visiting of if
statements in `SemanticBuilder` with fewer `snapshot`, `restore`, and
`merge` operations, so I restructured that visit a bit.
I also found one correctness bug in the `merge` method (it failed to
extend the given snapshot with "unbound" for any missing symbols,
meaning we would just lose the fact that the symbol could be unbound in
the merged-in path), and two efficiency bugs (if one of the ranges to
merge is empty, we can just use the other one, no need for copies, and
if the ranges are overlapping -- which can occur with nested branches --
we can still just merge them with no copies), and fixed all three.
## Summary
This PR adds VS Code specific extension settings in the online
documentation.
The content is basically taken from the `package.json` file in the
`ruff-vscode` repository.
