Closes https://github.com/astral-sh/ruff/issues/7347Closes#3970 via use of `include`
We could update examples in our documentation, but I worry since we do
not have versioned documentation users on older versions would be
confused. Instead, I'll open an issue to track updating use of `ruff
check .` in the documentation sometime in the future.
## Summary
This PR updates the formatter to preserve trailing semicolon for Jupyter
Notebooks.
The motivation behind the change is that semicolons in notebooks are
typically used to hide the output, for example when plotting. This is
highlighted in the linked issue.
The conditions required as to when the trailing semicolon should be
preserved are:
1. It should be a top-level statement which is last in the module.
2. For statement, it can be either assignment, annotated assignment, or
augmented assignment. Here, the target should only be a single
identifier i.e., multiple assignments or tuple unpacking isn't
considered.
3. For expression, it can be any.
## Test Plan
Add a new integration test in `ruff_cli`. The test notebook basically
acts as a document as to which trailing semicolons are to be preserved.
fixes: #8254
## Summary
This PR removes the `todo!()` around `IpyEscapeCommand` in the
formatter.
The `NeedsParentheses` trait needs to be implemented which always return
`Never`. The reason being that if an escape command is parenthesized,
then that's not parsed as an escape command. IOW, the parentheses
shouldn't be present around an escape command.
In the similar way, the `CanSkipOptionalParenthesesVisitor` will skip
this node.
## Test Plan
Updated the `unformatted.ipynb` fixture with new cells containing
IPython escape commands and the corresponding snapshot was verified.
Also, tested it out in a few open source repositories containing
notebooks (`openai/openai-cookbook`, `huggingface/notebooks`).
#### New cells in `unformatted.ipynb`
**Cell 2**
```markdown
A markdown cell
```
**Cell 3**
```python
def some_function(foo, bar):
pass
%matplotlib inline
```
**Cell 4**
```python
foo = %pwd
def some_function(foo,bar,):
foo = %pwd
print(foo
)
```
fixes: #8204
**Summary** `ruff format --diff` is similar to `ruff format --check`,
but we don't only error with the list of file that would be formatted,
but also show a diff between the unformatted input and the formatted
output.
```console
$ ruff format --diff scratch.py scratch.pyi scratch.ipynb
warning: `ruff format` is not yet stable, and subject to change in future versions.
--- scratch.ipynb
+++ scratch.ipynb
@@ -1,3 +1,4 @@
import numpy
-maths = (numpy.arange(100)**2).sum()
-stats= numpy.asarray([1,2,3,4]).median()
+
+maths = (numpy.arange(100) ** 2).sum()
+stats = numpy.asarray([1, 2, 3, 4]).median()
--- scratch.py
+++ scratch.py
@@ -1,3 +1,3 @@
x = 1
-y=2
+y = 2
z = 3
2 files would be reformatted, 1 file left unchanged
```
With `--diff`, the summary message gets printed to stderr to allow e.g.
`ruff format --diff . > format.patch`.
At the moment, jupyter notebooks are formatted as code diffs, while
everything else is a real diff that could be applied. This means that
the diffs containing jupyter notebooks are not real diffs and can't be
applied. We could change this to json diffs, but they are hard to read.
We could also split the diff option into a human diff option, where we
deviate from the machine readable diff constraints, and a proper machine
readable, appliable diff output that you can pipe into other tools.
To make the tests work, the results (and errors, if any) are sorted
before printing them. Previously, the print order was random, i.e. two
identical runs could have different output.
Open question: Should this go into the markdown docs? Or will this be
subsumed by the integration of the formatter into `ruff check`?
**Test plan** Fixtures for the change and no change cases, including a
jupyter notebook and for file input and stdin.
Fixes#7231
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
It is apparently possible to add files to the git index, even if they
are part of the gitignore (see e.g.
https://stackoverflow.com/questions/45400361/why-is-gitignore-not-ignoring-my-files,
even though it's strange that the gitignore entries existed before the
files were added, i wouldn't know how to get them added in that case). I
ran
```
git rm -r --cached .
```
then change the gitignore not actually ignore those files with the
exception of
`crates/ruff_cli/resources/test/fixtures/cache_mutable/source.py`, which
is actually a generated file.
Reimplements https://github.com/astral-sh/ruff/pull/3104
Closes https://github.com/astral-sh/ruff/issues/5726
Note that we will generate the hash for a cache key twice in normal
operation. Once to check for the cached item and again to update the
cache. We could optimize this by generating the hash once in
`diagnostics::lint_file` and passing the `u64` into `get` and `update`.
We'd probably want to wrap it in a `CacheKeyHash` enum for type safety.
## Test plan
Unit tests for Windows and Unix.
Manual test with case from issue
```
❯ touch fake.py
❯ chmod +x fake.py
❯ ./target/debug/ruff --select EXE fake.py
fake.py:1:1: EXE002 The file is executable but no shebang is present
Found 1 error.
❯ chmod -x fake.py
❯ ./target/debug/ruff --select EXE fake.py
```
## Summary
And remove cached files that we haven't seen for a certain period of
time, currently 30 days.
For the last seen timestamp we actually use an `u64`, it's smaller on
disk than `SystemTime` (which size is OS dependent) and fits in an
`AtomicU64` which we can use to update it without locks.
## Test Plan
Added a new unit test, run by `cargo test`.
## Summary
Open cache files in parallel (again), brings the performance back to be roughly equal to the old implementation.
## Test Plan
Existing tests should keep working.
