This fixes a bug where the current indent level was not calculated
correctly for doctests. Namely, it didn't account for the extra indent
level (in terms of ASCII spaces) used by by the PS1 (`>>> `) and PS2
(`... `) prompts. As a result, lines could extend up to 4 spaces beyond
the configured line length limit.
We fix that by passing the `CodeExampleKind` to the `format` routine
instead of just the code itself. In this way, `format` can query whether
there will be any extra indent added _after_ formatting the code and
take that into account for its line length setting.
We add a few regression tests, taken directly from @stinodego's
examples.
Fixes#9126
This PR does the plumbing to make a new formatting option,
`docstring-code-format`, available in the configuration for end users.
It is disabled by default (opt-in). It is opt-in at least initially to
reflect a conservative posture. The intent is to make it opt-out at some
point in the future.
This was split out from #8811 in order to make #8811 easier to merge.
Namely, once this is merged, docstring code snippet formatting will
become available to end users. (See comments below for how we arrived at
the name.)
Closes#7146
## Test Plan
Other than the standard test suite, I ran the formatter over the CPython
and polars projects to ensure both that the result looked sensible and
that tests still passed. At time of writing, one issue that currently
appears is that reformatting code snippets trips the long line lint:
https://github.com/BurntSushi/polars/actions/runs/7006619426/job/19058868021
This PR adds a `as_slice` method to all the string nodes which returns
all the parts of the nodes as a slice. This will be useful in the next
PR to split the string formatting to use this method to extract the
_single node_ or _implicitly concanated nodes_.
## Summary
Adds support for sarif v2.1.0 output to cli, usable via the
output-format paramter.
`ruff . --output-format=sarif`
Includes a few changes I wasn't sure of, namely:
* Adds a few derives for Clone & Copy, which I think could be removed
with a little extra work as well.
## Test Plan
I built and ran this against several large open source projects and
verified that the output sarif was valid, using [Microsoft's SARIF
validator tool](https://sarifweb.azurewebsites.net/Validation)
I've also attached an output of the sarif generated by this version of
ruff on the main branch of django at commit: b287af5dc9
[django_main_b287af5dc9_sarif.json](https://github.com/astral-sh/ruff/files/13626222/django_main_b287af5dc9_sarif.json)
Note: this needs to be regenerated with the latest changes and
confirmed.
## Open Points
[ ] Convert to just using all Rules all the time
[ ] Fix the issue with getting the file URI when compiling for web
assembly
## Summary
This allows us to fix usages like:
```python
from pandas import DataFrame
def baz() -> DataFrame:
...
```
By quoting the `DataFrame` in `-> DataFrame`. Without quotes, moving
`from pandas import DataFrame` into an `if TYPE_CHECKING:` block will
fail at runtime, since Python tries to evaluate the annotation to add it
to the function's `__annotations__`.
Unfortunately, this does require us to split our "annotation kind" flags
into three categories, rather than two:
- `typing-only`: The annotation is only evaluated at type-checking-time.
- `runtime-evaluated`: Python will evaluate the annotation at runtime
(like above) -- but we're willing to quote it.
- `runtime-required`: Python will evaluate the annotation at runtime
(like above), and some library (like Pydantic) needs it to be available
at runtime, so we _can't_ quote it.
This functionality is gated behind a setting
(`flake8-type-checking.quote-annotations`).
Closes https://github.com/astral-sh/ruff/issues/5559.
## Summary
Adds `find_assigned_value` a function which gets the `&Expr` assigned to
a given `id` if one exists in the semantic model.
Open TODOs:
- [ ] Handle `binding.kind.is_unpacked_assignment()`: I am bit confused
by this one. The snippet from its documentation does not appear to be
counted as an unpacked assignment and the only ones I could find for
which that was true were invalid Python like:
```python
x, y = 1
```
- [ ] How to handle AugAssign. Can we combine statements like:
```python
(a, b) = [(1, 2, 3), (4,)]
a += (6, 7)
```
to get the full value for a? Code currently just returns `None` for
these assign types
- [ ] Multi target assigns
```python
m_c = (m_d, m_e) = (0, 0)
trio.sleep(m_c) # OK
trio.sleep(m_d) # TRIO115
trio.sleep(m_e) # TRIO115
```
## Test Plan
Used the function in two rules:
- `TRIO115`
- `PERF101`
Expanded both their fixtures for explicit multi target check
## Summary
A fairly common pattern which triggers F841 is unused variables from
tuple assignments, e.g.:
user, created = User.objects.get_or_create(...)
^ F841: Local variable `created` is assigned to but never used
This error is currently not auto-fixable.
This PR adds support for fixing the error automatically by renaming the
unused variable to have a leading underscore (i.e. `_created`) **iff**
the `dummy-variable-rgx` setting would match it.
I considered using `renamers::Renamer` here, but because by the nature
of the error there should be no references to it, that seemed like
overkill. Also note that the fix might break by shadowing the new name
if it is already used elsewhere in the scope. I left it as is because
1. the renamed variable matches the "unused" regex, so it should
hopefully not already be used,
2. the fix is marked as unsafe so it should be reviewed manually
anyways, and
3. I'm not actually sure how to check the scope for the new variable
name 😅
## Summary
This PR changes the internal `docstring-code-line-width` setting to
additionally accept a string value `dynamic`. When `dynamic` is set, the
line width is dynamically adjusted when reformatting code snippets in
docstrings based on the indent level of the docstring. The result is
that the reformatted lines from the code snippet should not exceed the
"global" line width configuration for the surrounding source.
This PR does not change the default behavior, although I suspect the
default should probably be `dynamic`.
## Test Plan
I added a new configuration to the existing docstring code tests and
also added a new set of tests dedicated to the new `dynamic` mode.
Hides hints about unsafe fixes when they are disabled e.g. with
`--no-unsafe-fixes` or `unsafe-fixes = false`. By default, unsafe fix
hints are still displayed. This seems like a nice way to remove the nag
for users who have chosen not to apply unsafe fixes.
Inspired by comment at
https://github.com/astral-sh/ruff/issues/9063#issuecomment-1850289675
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Check floating-point numbers similarly to integers in FURB163. For
example, both `math.log(x, 10)` and `math.log(x, 10.0)` should be
changed to `math.log10(x)`.
## Test Plan
<!-- How was it tested? -->
Added couple of test cases.
## Summary
E274 currently flags any keyword at the start of a line indented with
tabs. This turns out to be due to a bug in `Whitespace::trailing` that
never considers any whitespace containing a tab as indentation.
## Test Plan
Added a simple test case.
This PR allows `matplotlib.use` calls to intersperse imports without
triggering `E402`. This is a pragmatic choice as it's common to require
`matplotlib.use` calls prior to importing from within `matplotlib`
itself.
Closes https://github.com/astral-sh/ruff/issues/9091.
## Summary
This does the light plumbing necessary to add a new internal option that
permits setting the line width of code examples in docstrings. The plan
is to add the corresponding user facing knob in #8854.
Note that this effectively removes the `same-as-global` configuration
style discussed [in this
comment](https://github.com/astral-sh/ruff/issues/8855#issuecomment-1847230440).
It replaces it with the `{integer}` configuration style only.
There are a lot of commits here, but they are each tiny to make review
easier because of the changes to snapshots.
## Test Plan
I added a new docstring test configuration that sets
`docstring-code-line-width = 60` and examined the differences.
Bumps
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## Summary
In https://github.com/astral-sh/ruff/pull/8921, we changed our parameter
formatting behavior to add a trailing comma whenever a single-argument
function breaks. This introduced a deviation in the case that a function
contains a single argument, but _also_ includes a positional-only or
keyword-only separator.
Closes https://github.com/astral-sh/ruff/issues/9074.
## Summary
Fixes#8863 : Detect asyncio-dangling-task (RUF006) when discarding
return value
## Test Plan
added new two testcases, changed result of an old one that was made more
specific
## Summary
Fix a couple typos:
- I'm certain about `It's is` → `It is`.
- Not sure about `is it's` → `if it's` because I don't understand the
sentence.
## Test Plan
No tests.
## Summary
This PR updates the logic for `is_magic_cell` to include certain cell
magics. These cell magics would contain Python code following the line
defining the command. The code could define a variable which can then be
referenced in other cells. Currently, we would ignore the cell
completely leading to undefined-name violation.
As discussed in
https://github.com/astral-sh/ruff/issues/8354#issuecomment-1832221009
## Test Plan
Add new test case to validate this scenario.
(This is not possible to actually use until
https://github.com/astral-sh/ruff/pull/8854 is merged.)
This commit slots in support for formatting Markdown fenced code
blocks[1]. With the refactoring done for reStructuredText previously,
this ended up being pretty easy to add. Markdown code blocks are also
quite a bit easier to parse and recognize correctly.
One point of contention in #8860 is whether to assume that unlabeled
Markdown code fences are Python or not by default. In this PR, we make
such an assumption. This follows what `rustdoc` does. The mitigation
here is that if an unlabeled code block isn't Python, then it probably
won't parse as Python. And we'll end up skipping it. So in the vast
majority of cases, the worst thing that can happen is a little bit of
wasted work.
Closes#8860
[1]: https://spec.commonmark.org/0.30/#fenced-code-blocks
## Summary
It's common to interleave a `sys.path` modification between imports at
the top of a file. This is a frequent cause of `# noqa: E402` false
positives, as seen in the ecosystem checks. This PR modifies E402 to
omit such modifications when determining the "import boundary".
(We could consider linting against `sys.path` modifications, but that
should be a separate rule.)
Closes: https://github.com/astral-sh/ruff/issues/5557.
## Summary
This PR introduces a new `StringLike` enum which is a narrow type to
indicate string-like nodes. These includes the string literals, bytes
literals, and the literal parts of f-strings.
The main motivation behind this is to avoid repetition of rule calling
in the AST checker. We add a new `analyze::string_like` function which
takes in the enum and calls all the respective rule functions which
expects atleast 2 of the variants of this enum.
I'm open to discarding this if others think it's not that useful at this
stage as currently only 3 rules require these nodes.
As suggested
[here](https://github.com/astral-sh/ruff/pull/8835#discussion_r1414746934)
and
[here](https://github.com/astral-sh/ruff/pull/8835#discussion_r1414750204).
## Test Plan
`cargo test`
Rebase of #6365 authored by @davidszotten.
## Summary
This PR updates the AST structure for an f-string elements.
The main **motivation** behind this change is to have a dedicated node
for the string part of an f-string. Previously, the existing
`ExprStringLiteral` node was used for this purpose which isn't exactly
correct. The `ExprStringLiteral` node should include the quotes as well
in the range but the f-string literal element doesn't include the quote
as it's a specific part within an f-string. For example,
```python
f"foo {x}"
# ^^^^
# This is the literal part of an f-string
```
The introduction of `FStringElement` enum is helpful which represent
either the literal part or the expression part of an f-string.
### Rule Updates
This means that there'll be two nodes representing a string depending on
the context. One for a normal string literal while the other is a string
literal within an f-string. The AST checker is updated to accommodate
this change. The rules which work on string literal are updated to check
on the literal part of f-string as well.
#### Notes
1. The `Expr::is_literal_expr` method would check for
`ExprStringLiteral` and return true if so. But now that we don't
represent the literal part of an f-string using that node, this improves
the method's behavior and confines to the actual expression. We do have
the `FStringElement::is_literal` method.
2. We avoid checking if we're in a f-string context before adding to
`string_type_definitions` because the f-string literal is now a
dedicated node and not part of `Expr`.
3. Annotations cannot use f-string so we avoid changing any rules which
work on annotation and checks for `ExprStringLiteral`.
## Test Plan
- All references of `Expr::StringLiteral` were checked to see if any of
the rules require updating to account for the f-string literal element
node.
- New test cases are added for rules which check against the literal
part of an f-string.
- Check the ecosystem results and ensure it remains unchanged.
## Performance
There's a performance penalty in the parser. The reason for this remains
unknown as it seems that the generated assembly code is now different
for the `__reduce154` function. The reduce function body is just popping
the `ParenthesizedExpr` on top of the stack and pushing it with the new
location.
- The size of `FStringElement` enum is the same as `Expr` which is what
it replaces in `FString::format_spec`
- The size of `FStringExpressionElement` is the same as
`ExprFormattedValue` which is what it replaces
I tried reducing the `Expr` enum from 80 bytes to 72 bytes but it hardly
resulted in any performance gain. The difference can be seen here:
- Original profile: https://share.firefox.dev/3Taa7ES
- Profile after boxing some node fields:
https://share.firefox.dev/3GsNXpD
### Backtracking
I tried backtracking the changes to see if any of the isolated change
produced this regression. The problem here is that the overall change is
so small that there's only a single checkpoint where I can backtrack and
that checkpoint results in the same regression. This checkpoint is to
revert using `Expr` to the `FString::format_spec` field. After this
point, the change would revert back to the original implementation.
## Review process
The review process is similar to #7927. The first set of commits update
the node structure, parser, and related AST files. Then, further commits
update the linter and formatter part to account for the AST change.
---------
Co-authored-by: David Szotten <davidszotten@gmail.com>
