## Summary
Given:
```python
def end_of_file():
if False:
return 1
x = 2 \
```
Then when searching for the end of the `x = 2` statement, we'd reach a
panic as we'd hit the last line (`\\`) and abort, since the universal
iterator doesn't return trailing newlines. Instead, we should just use
the end of the file as the fallback.
Closes https://github.com/astral-sh/ruff/issues/6787.
## Test Plan
`cargo test`
## Summary
Avoid `C417` for `lambda` with default and variadic parameters.
## Test Plan
`cargo test` and checking if it generates any autofix errors as test
cases
for `lambda` with default parameters already exists.
fixes: #6715
## Summary
This PR updates the lexer tests to use the snapshot testing framework.
It also
makes the following changes:
* Remove the use of macros in the lexer tests
* Use `test_case` for EOL tests
## Test Plan
```
cargo test --package ruff_python_parser --lib --all-features -- lexer::tests --no-capture
```
With https://github.com/django/django/pull/17181 merged, this removes an
odd edge case (tuple expression statements aka bogus trailing commas
after statements that turn them into a tuple without you noticing) that
we don't want to care about because the input code is ~wrong from the
similarity index. I've took this opportunity to update the revisions of
all projects we test.
main
| project | similarity index |
|--------------|------------------|
| cpython | 0.75477 |
| django | 0.99814 |
| transformers | 0.99621 |
| twine | 0.99876 |
| typeshed | 0.99953 |
| warehouse | 0.99601 |
| zulip | 0.99727 |
this PR
| project | similarity index |
|--------------|------------------|
| cpython | 0.75996 |
| django | 0.99819 |
| transformers | 0.99622 |
| twine | 0.99876 |
| typeshed | 0.99953 |
| warehouse | 0.99607 |
| zulip | 0.99729 |
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## Summary
This PR adds a utility for transforming expressions via LibCST that
automatically wraps the expression in parentheses, applies a
user-provided transformation, then strips the parentheses from the
generated code. LibCST can't parse arbitrary expression ranges, since
some expressions may require parenthesization in order to be parsed
properly. For example:
```python
option = (
'{name}={value}'
.format(nam=name, value=value)
)
```
In this case, the expression range is:
```python
'{name}={value}'
.format(nam=name, value=value)
```
Which isn't valid on its own. So, instead, we add "fake" parentheses
around the expression.
We were already doing this in a few places, so this is mostly
formalizing and DRYing up that pattern.
Closes https://github.com/astral-sh/ruff/issues/6720.
## Summary
For imports, we enforce that there's _at least_ one empty line after an
import (assuming the next statement is _not_ an import), but allow up to
two at the module level.
Closes https://github.com/astral-sh/ruff/issues/6760.
## Test Plan
`cargo test`
## Summary
The isolation group for unused imports was relying on
`checker.semantic().current_statement()`, which isn't valid for that
rule, since it runs over the _scope_, not the statement. Instead, we
need to lookup the isolation group based on the `NodeId` of the
statement.
Our tests didn't catch this, because we mostly have cases that look like
this:
```python
if TYPE_CHECKING:
import shelve
import importlib
```
In this case, the two fixes to remove the two unused imports are
considered overlapping (since we delete the _full_ line, and the two
_full_ lines touch, and we consider exactly-adjacent fixes to be
overlapping), and so they don't run in a single pass due to the
non-overlapping-fixes requirement. That is: the isolation groups aren't
required for this case. They are, however, required for cases like:
```python
if TYPE_CHECKING:
import shelve
import importlib
```
...where the fixes don't overlap.
Closes https://github.com/astral-sh/ruff/issues/6758.
## Test Plan
`cargo test`
`IOError` is special, it is not actually a lint but an error before
linting. I'm not entirely sure how to document it since it does not
match the general lint rule pattern (`Checks that the file can be read
in its entirety.` is imho worse).
I added the in my experience two most common reasons for io errors on
unix systems and linked two tutorials on how to fix them.
See https://github.com/astral-sh/ruff/issues/2646
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
I noticed this in the ecosystem CI check from
https://github.com/astral-sh/ruff/pull/6742. If we include source code
directly in a diagnostic, we need to be careful to avoid rendering
multi-line diagnostics or even excessively long diagnostics.
## Test Plan
`cargo test`
## Summary
This PR is a follow-up to the suggestion in
https://github.com/astral-sh/ruff/pull/6345#discussion_r1285470953 to
use a single stack to store all statements and expressions, rather than
using separate vectors for each, which gives us something closer to a
full-fidelity chain. (We can then generalize this concept to include all
other AST nodes too.)
This is in part made possible by the removal of the hash map from
`&Stmt` to `StatementId` (#6694), which makes it much cheaper to store
these using a single interface (since doing so no longer introduces the
requirement that we hash all expressions).
I'll follow-up with some profiling, but a few notes on how the data
requirements have changed:
- We now store a `BranchId` for every expression, not just every
statement, so that's an extra `u32`.
- We now store a single `NodeId` on every snapshot, rather than separate
`StatementId` and `ExpressionId` IDs, so that's one fewer `u32` for each
snapshot.
- We're probably doing a few more lookups in general, since any calls to
`current_statement()` etc. now have to iterate up the node hierarchy
until they identify the first statement.
## Test Plan
`cargo test`
## Summary
Avoid attempting to rewrite `import matplotlib.pyplot` as `import
matplotlib.pyplot as plt`. We can't support these right now, since we
don't track references at the attribute level (like
`matplotlib.pyplot`).
Closes https://github.com/astral-sh/ruff/issues/6719.
## Summary
Given:
```python
from sys import *
exit(0)
```
We can't add `exit` to `from sys import *`, so we should just ignore it.
Ideally, we'd just resolve `exit` in the first place (since it's
imported from `from sys import *`), but as long as we don't support
wildcard imports, this is more consistent.
Closes https://github.com/astral-sh/ruff/issues/6718.
## Test Plan
`cargo test`
Avoid the nesting in a macro by using the new `WithNodeLevel` to
`PyFormatter` deref. No changes otherwise.
I wanted to follow this up with quickly fixing the typeshed empty line
rules but they turned out a lot more complex than i had anticipated.
Bumps
[cloudflare/wrangler-action](https://github.com/cloudflare/wrangler-action)
from 3.0.2 to 3.1.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/cloudflare/wrangler-action/releases">cloudflare/wrangler-action's
releases</a>.</em></p>
<blockquote>
<h2>v3.1.0</h2>
<h3>Minor Changes</h3>
<ul>
<li>
<p><a
href="https://redirect.github.com/cloudflare/wrangler-action/pull/154">#154</a>
<a
href="3f40637a1c"><code>3f40637</code></a>
Thanks <a
href="https://github.com/JacobMGEvans"><code>@JacobMGEvans</code></a>!
- feat: Quiet mode
Some of the stderr, stdout, info & groupings can be a little noisy
for some users and use cases.
This feature allows for a option to be passed 'quiet: true' this would
significantly reduce the noise.</p>
<p>There will still be output that lets the user know Wrangler Installed
and Wrangler Action completed successfully.
Any failure status will still be output to the user as well, to prevent
silent failures.</p>
<p>resolves <a
href="https://redirect.github.com/cloudflare/wrangler-action/issues/142">#142</a></p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/cloudflare/wrangler-action/blob/main/CHANGELOG.md">cloudflare/wrangler-action's
changelog</a>.</em></p>
<blockquote>
<h2>3.1.0</h2>
<h3>Minor Changes</h3>
<ul>
<li>
<p><a
href="https://redirect.github.com/cloudflare/wrangler-action/pull/154">#154</a>
<a
href="3f40637a1c"><code>3f40637</code></a>
Thanks <a
href="https://github.com/JacobMGEvans"><code>@JacobMGEvans</code></a>!
- feat: Quiet mode
Some of the stderr, stdout, info & groupings can be a little noisy
for some users and use cases.
This feature allows for a option to be passed 'quiet: true' this would
significantly reduce the noise.</p>
<p>There will still be output that lets the user know Wrangler Installed
and Wrangler Action completed successfully.
Any failure status will still be output to the user as well, to prevent
silent failures.</p>
<p>resolves <a
href="https://redirect.github.com/cloudflare/wrangler-action/issues/142">#142</a></p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="c25aadc965"><code>c25aadc</code></a>
Automatic compilation</li>
<li><a
href="fcf648c789"><code>fcf648c</code></a>
Merge pull request <a
href="https://redirect.github.com/cloudflare/wrangler-action/issues/158">#158</a>
from cloudflare/changeset-release/main</li>
<li><a
href="fcbabec21e"><code>fcbabec</code></a>
Version Packages</li>
<li><a
href="0aa12f0c2b"><code>0aa12f0</code></a>
Merge pull request <a
href="https://redirect.github.com/cloudflare/wrangler-action/issues/154">#154</a>
from cloudflare/jacobmgevans/silence-mode</li>
<li><a
href="ad7441b6ad"><code>ad7441b</code></a>
Merge pull request <a
href="https://redirect.github.com/cloudflare/wrangler-action/issues/157">#157</a>
from EstebanBorai/main</li>
<li><a
href="3f40637a1c"><code>3f40637</code></a>
Quiet feature</li>
<li><a
href="4132892387"><code>4132892</code></a>
fix: use <code>wrangler@3.5.1</code> by default</li>
<li><a
href="62ce9d23a3"><code>62ce9d2</code></a>
Merge pull request <a
href="https://redirect.github.com/cloudflare/wrangler-action/issues/155">#155</a>
from ethanppl/fix-readme</li>
<li><a
href="f089b0a195"><code>f089b0a</code></a>
Update README.md</li>
<li><a
href="4318a2fb97"><code>4318a2f</code></a>
Fix examples in README.md</li>
<li>Additional commits viewable in <a
href="https://github.com/cloudflare/wrangler-action/compare/v3.0.2...v3.1.0">compare
view</a></li>
</ul>
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**Summary** A common pattern in the code used to be
```rust
if statements.len() != 1 {
return;
}
use_single_entry(statements[0])?;
```
which can be better expressed as
```rust
let [statement] = statements else {
return;
};
use_single_entry(statements)?;
```
Direct indexing can cause panics if you don't manually take care of
checking the length, while matching (such as if-let or let-else) can
never panic.
This isn't a complete refactor, i've just removed some of the obvious
cases. I've specifically looked for `.len() != 1` and fixed those.
**Test Plan** No functional changes
## Summary
We're using LibCST to ensure that we return the full parenthesized range
of an expression, for display purposes. We can just use
`parenthesized_range` which is more efficient and removes one LibCST
dependency.
## Test Plan
`cargo test`
This _probably_ never matters given the set of rules we support and in
fact I'm having trouble thinking of a test-case for it, but it's
definitely incorrect _not_ to pass on the `BranchId` here.
