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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Fixes#19664
Fix allowed unused imports matching for top-level modules.
I've simply replaced `from_dotted_name` with `user_defined`. Since
QualifiedName for imports is created in
crates/ruff_python_semantic/src/imports.rs, I guess it's acceptable to
use `user_defined` here. Please tell me if there is better way.
0c5089ed9e/crates/ruff_python_semantic/src/imports.rs (L62)
## Test Plan
<!-- How was it tested? -->
I've added a snapshot test
`f401_allowed_unused_imports_top_level_module`.
## Summary
This PR is a first step toward adding a GitLab output format to ty. It
converts the `GitlabEmitter` from `ruff_linter` to a `GitlabRenderer` in
`ruff_db` and updates its implementation to handle non-Ruff files and
diagnostics without primary spans. I tried to break up the changes here
so that they're easy to review commit-by-commit, or at least in groups
of commits:
- [preparatory changes in-place in `ruff_linter` and a `ruff_db`
skeleton](0761b73a61)
- [moving the code over with no implementation changes mixed
in](0761b73a61..8f909ea0bb)
- [tidying up the code now in
`ruff_db`](9f047c4f9f..e5e217fcd6)
This wasn't strictly necessary, but I also added some `Serialize`
structs instead of calling `json!` to make it a little clearer that we
weren't modifying the schema (e4c4bee35d).
I plan to follow this up with a separate PR exposing this output format
in the ty CLI, which should be quite straightforward.
## Test Plan
Existing tests, especially the two that show up in the diff as renamed
nearly without changes
## Summary
closes https://github.com/astral-sh/ty/issues/692
If the expression (or any child expressions) is not definitely bound the
reachability constraint evaluation is determined as ambiguous.
This fixes the infinite cycles panic in the following code:
```py
from typing import Literal
class Toggle:
def __init__(self: "Toggle"):
if not self.x:
self.x: Literal[True] = True
```
Credit of this solution is for David.
## Test Plan
- Added a test case with too many cycle iterations panic.
- Previous tests.
---------
Co-authored-by: David Peter <mail@david-peter.de>
Part of #994. This adds a new field to the Specialization struct to
record when we're dealing with the top or bottom materialization of an
invariant generic. It also implements subtyping and assignability for
these objects.
Next planned steps after this is done are to implement other operations
on top/bottom materializations; probably attribute access is an
important one.
---------
Co-authored-by: Carl Meyer <carl@astral.sh>
## Summary
Adds new rule to find and report use of `httpx.Client` in synchronous
functions.
See issue #8451
## Test Plan
New snapshots for `ASYNC212.py` with `cargo insta test`.
There are some situations that we have a confusing diagnostics due to
identical class names.
## Class with same name from different modules
```python
import pandas
import polars
df: pandas.DataFrame = polars.DataFrame()
```
This yields the following error:
**Actual:**
error: [invalid-assignment] "Object of type `DataFrame` is not
assignable to `DataFrame`"
**Expected**:
error: [invalid-assignment] "Object of type `polars.DataFrame` is not
assignable to `pandas.DataFrame`"
## Nested classes
```python
from enum import Enum
class A:
class B(Enum):
ACTIVE = "active"
INACTIVE = "inactive"
class C:
class B(Enum):
ACTIVE = "active"
INACTIVE = "inactive"
```
**Actual**:
error: [invalid-assignment] "Object of type `Literal[B.ACTIVE]` is not
assignable to `B`"
**Expected**:
error: [invalid-assignment] "Object of type
`Literal[my_module.C.B.ACTIVE]` is not assignable to `my_module.A.B`"
## Solution
In this MR we added an heuristics to detect when to use a fully
qualified name:
- There is an invalid assignment and;
- They are two different classes and;
- They have the same name
The fully qualified name always includes:
- module name
- nested classes name
- actual class name
There was no `QualifiedDisplay` so I had to implement it from scratch.
I'm very new to the codebase, so I might have done things inefficiently,
so I appreciate feedback.
Should we pre-compute the fully qualified name or do it on demand?
## Not implemented
### Function-local classes
Should we approach this in a different PR?
**Example**:
```python
# t.py
from __future__ import annotations
def function() -> A:
class A:
pass
return A()
class A:
pass
a: A = function()
```
#### mypy
```console
t.py:8: error: Incompatible return value type (got "t.A@5", expected "t.A") [return-value]
```
From my testing the 5 in `A@5` comes from the like number.
#### ty
```console
error[invalid-return-type]: Return type does not match returned value
--> t.py:4:19
|
4 | def function() -> A:
| - Expected `A` because of return type
5 | class A:
6 | pass
7 |
8 | return A()
| ^^^ expected `A`, found `A`
|
info: rule `invalid-return-type` is enabled by default
```
Fixes https://github.com/astral-sh/ty/issues/848
---------
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Co-authored-by: Carl Meyer <carl@astral.sh>
## Summary
Fixes#19581
I decided to add in a `indent_first_line` function into
[`textwrap.rs`](https://github.com/astral-sh/ruff/blob/main/crates/ruff_python_trivia/src/textwrap.rs),
as it solely focuses on text manipulation utilities. It follows the same
design as `indent()`, and there may be situations in the future where it
can be reused as well.
---------
Co-authored-by: Brent Westbrook <36778786+ntBre@users.noreply.github.com>
Co-authored-by: Brent Westbrook <brentrwestbrook@gmail.com>
## Summary
While looking at some logging output that I added to
`ReachabilityConstraintBuilder::add_and_constraint` in order to debug
https://github.com/astral-sh/ty/issues/1091, I noticed that it seemed to
suggest that the TDD was built in an imbalanced way for code like the
following, where we have a sequence of non-nested `if` conditions:
```py
def f(t1, t2, t3, t4, …):
x = 0
if t1:
x = 1
if t2:
x = 2
if t3:
x = 3
if t4:
x = 4
…
```
To understand this a bit better, I added some code to the
`ReachabilityConstraintBuilder` to render the resulting TDD. On `main`,
we get a tree that looks like the following, where you can see a pattern
of N sub-trees that grow linearly with N (number of `if` statements).
This results in an overall tree structure that has N² nodes (see graph
below):
<img alt="normal order"
src="https://github.com/user-attachments/assets/aab40ce9-e82a-4fcd-823a-811f05f15f66"
/>
If we zoom in to one of these subgraphs, we can see what the problem is.
When we add new constraints that represent combinations like `t1 AND ~t2
AND ~t3 AND t4 AND …`, they start with the evaluation of "early"
conditions (`t1`, `t2`, …). This means that we have to create new
subgraphs for each new `if` condition because there is little sharing
with the previous structure. We evaluate the Boolean condition in a
right-associative way: `t1 AND (~t2 AND (~t3 AND t4)))`:
<img width="500" align="center"
src="https://github.com/user-attachments/assets/31ea7182-9e00-4975-83df-d980464f545d"
/>
If we change the ordering of TDD atoms, we can change that to a
left-associative evaluation: `(((t1 AND ~t2) AND ~t3) AND t4) …`. This
means that we can re-use previous subgraphs `(t1 AND ~t2)`, which
results in a much more compact graph structure overall (note how "late"
conditions are now at the top, and "early" conditions are further down
in the graph):
<img alt="reverse order"
src="https://github.com/user-attachments/assets/96a6b7c1-3d35-4192-a917-0b2d24c6b144"
/>
If we count the number of TDD nodes for a growing number if `if`
statements, we can see that this change results in a slower growth. It's
worth noting that the growth is still superlinear, though:
<img width="800" height="600" alt="plot"
src="https://github.com/user-attachments/assets/22e8394f-e74e-4a9e-9687-0d41f94f2303"
/>
On the actual code from the referenced ticket (the `t_main.py` file
reduced to its main function, with the main function limited to 2000
lines instead of 11000 to allow the version on `main` to run to
completion), the effect is much more dramatic. Instead of 26 million TDD
nodes (`main`), we now only create 250 thousand (this branch), which is
slightly less than 1%.
The change in this PR allows us to build the semantic index and
type-check the problematic `t_main.py` file in
https://github.com/astral-sh/ty/issues/1091 in 9 seconds. This is still
not great, but an obvious improvement compared to running out of memory
after *minutes* of execution.
An open question remains whether this change is beneficial for all kinds
of code patterns, or just this linear sequence of `if` statements. It
does not seem unreasonable to think that referring to "earlier"
conditions is generally a good idea, but I learned from Doug that it's
generally not possible to find a TDD-construction heuristic that is
non-pathological for all kinds of inputs. Fortunately, it seems like
this change here results in performance improvements across *all of our
benchmarks*, which should increase the confidence in this change:
| Benchmark | Improvement |
|---------------------|-------------------------|
| hydra-zen | +13% |
| DateType | +5% |
| sympy (walltime) | +4% |
| attrs | +4% |
| pydantic (walltime) | +2% |
| pandas (walltime) | +2% |
| altair (walltime) | +2% |
| static-frame | +2% |
| anyio | +1% |
| freqtrade | +1% |
| colour-science | +1% |
| tanjun | +1% |
closes https://github.com/astral-sh/ty/issues/1091
---------
Co-authored-by: Douglas Creager <dcreager@dcreager.net>
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Extend the following rules.
### AIR311
* `airflow.sensors.base.BaseSensorOperator` →
airflow.sdk.bases.sensor.BaseSensorOperator`
* `airflow.sensors.base.PokeReturnValue` →
airflow.sdk.bases.sensor.PokeReturnValue`
* `airflow.sensors.base.poke_mode_only` →
airflow.sdk.bases.sensor.poke_mode_only`
* `airflow.decorators.base.DecoratedOperator` →
airflow.sdk.bases.decorator.DecoratedOperator`
* `airflow.models.param.Param` → airflow.sdk.definitions.param.Param`
* `airflow.decorators.base.DecoratedMappedOperator` →
`airflow.sdk.bases.decorator.DecoratedMappedOperator`
* `airflow.decorators.base.DecoratedOperator` →
`airflow.sdk.bases.decorator.DecoratedOperator`
* `airflow.decorators.base.TaskDecorator` →
`airflow.sdk.bases.decorator.TaskDecorator`
* `airflow.decorators.base.get_unique_task_id` →
`airflow.sdk.bases.decorator.get_unique_task_id`
* `airflow.decorators.base.task_decorator_factory` →
`airflow.sdk.bases.decorator.task_decorator_factory`
### AIR312
* `airflow.sensors.bash.BashSensor` →
`airflow.providers.standard.sensor.bash.BashSensor`
* `airflow.sensors.python.PythonSensor` →
`airflow.providers.standard.sensors.python.PythonSensor`
## Test Plan
<!-- How was it tested? -->
update the test fixture accordingly in the second commit and reorg in
the third
## Summary
Properly preserve type qualifiers when accessing attributes on unions
and intersections. This is a prerequisite for
https://github.com/astral-sh/ruff/pull/19579.
Also fix a completely wrong implementation of
`map_with_boundness_and_qualifiers`. It now closely follows
`map_with_boundness` (just above).
## Test Plan
I thought about it, but didn't find any easy way to test this. This only
affected `Type::member`. Things like validation of attribute writes
(where type qualifiers like `ClassVar` and `Final` are important) were
already handling things correctly.
## Summary
Add a subtly different test case for recursive PEP 695 type aliases,
which does require that we relax our union simplification, so we don't
eagerly unpack aliases from user-provided union annotations.
## Test Plan
Added mdtest.
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## Summary
Part of https://github.com/astral-sh/ruff/pull/20100 |
https://github.com/astral-sh/ruff/pull/20100#issuecomment-3225349156
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## Summary
Fixes https://github.com/astral-sh/ruff/issues/20088
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
`cargo nextest run flake8_use_pathlib`
---------
Co-authored-by: Brent Westbrook <brentrwestbrook@gmail.com>
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## Summary
Part of #20009 (i forgot to delete it in this PR)
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
<!-- How was it tested? -->
Closes#19302
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## Summary
This adds an auto-fix for `Logging statement uses f-string` Ruff G004,
so users don't have to resolve it manually.
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
I ran the auto-fixes on a Python file locally and and it worked as
expected.
<!-- How was it tested? -->
---------
Co-authored-by: Brent Westbrook <36778786+ntBre@users.noreply.github.com>
Summary
--
This PR aims to resolve (or help to resolve) #18442 and #19357 by
encoding the CPython semantics around the `__class__` cell in our
semantic model. Namely,
> `__class__` is an implicit closure reference created by the compiler
if any methods in a class body refer to either `__class__` or super.
from the Python
[docs](https://docs.python.org/3/reference/datamodel.html#creating-the-class-object).
As noted in the variant docs by @AlexWaygood, we don't fully model this
behavior, opting always to create the `__class__` cell binding in a new
`ScopeKind::DunderClassCell` around each method definition, without
checking if any method in the class body actually refers to `__class__`
or `super`.
As such, this PR fixes#18442 but not #19357.
Test Plan
--
Existing tests, plus the tests from #19783, which now pass without any
rule-specific code.
Note that we opted not to alter the behavior of F841 here because
flagging `__class__` in these cases still seems helpful. See the
discussion in
https://github.com/astral-sh/ruff/pull/20048#discussion_r2296252395 and
in the test comments for more information.
---------
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Co-authored-by: Mikko Leppänen <mleppan23@gmail.com>
## Summary
D413 in this section was incorrectly linking to D410.
I haven't checked if this issue happens anywhere else in the docs.
## Test Plan
Look at docs
## Summary
Our internal inlay hints structure (`ty_ide::InlayHint`) now more
closely resembles `lsp_types::InlayHint`.
This mainly allows us to convert to `lsp_types::InlayHint` with less
hassle, but it also allows us to manage the different parts of the inlay
hint better, which in the future will allow us to implement features
like goto on the type part of the type inlay hint.
It also really isn't important to store a specific `Type` instance in
the `InlayHintContent`. So we remove this and use `InlayHintLabel`
instead which just shows the representation of the type (along with
other information).
We see a similar structure used in rust-analyzer too.
## Summary
This has been here for awhile (since our initial PEP 695 type alias
support) but isn't really correct. The right-hand-side of a PEP 695 type
alias is a distinct scope, and we don't mark it as an "eager" nested
scope, so it automatically gets "deferred" resolution of names from
outer scopes (just like a nested function). Thus it's
redundant/unnecessary for us to use `DeferredExpressionState::Deferred`
for resolving that RHS expression -- that's for deferring resolution of
individual names within a scope. Using it here causes us to wrongly
ignore applicable outer-scope narrowing.
## Test Plan
Added mdtest that failed before this PR (the second snippet -- the first
snippet always passed.)
## Summary
As noted in a code TODO, our `Diff` rendering code previously didn't
have any
special handling for notebooks. This was particularly obvious when the
diffs
were rendered right next to the corresponding diagnostic because the
diagnostic
used cell-based line numbers, while the diff was still using line
numbers from
the concatenated source. This PR updates the diff rendering to handle
notebooks
too.
The main improvements shown in the example below are:
- Line numbers are now remapped to be relative to their cell
- Context lines from other cells are suppressed
```
error[unused-import][*]: `math` imported but unused
--> notebook.ipynb:cell 2:2:8
|
1 | # cell 2
2 | import math
| ^^^^
3 |
4 | print('hello world')
|
help: Remove unused import: `math`
ℹ Safe fix
1 1 | # cell 2
2 |-import math
3 2 |
4 3 | print('hello world')
```
I tried a few different approaches here before finally just splitting
the notebook into separate text ranges by cell and diffing each one
separately. It seems to work and passes all of our tests, but I don't
know if it's actually enforced anywhere that a single edit doesn't span
cells. Such an edit would silently be dropped right now since it would
fail the `contains_range` check. I also feel like I may have overlooked
an existing way to partition a file into cells like this.
## Test Plan
Existing notebook tests, plus a new one in `ruff_db`
## Summary
Implement validation for `TypedDict` constructor calls and dictionary
literal assignments, including support for `total=False` and proper
field management.
Also add support for `Required` and `NotRequired` type qualifiers in
`TypedDict` classes, along with proper inheritance behavior and the
`total=` parameter.
Support both constructor calls and dict literal syntax
part of https://github.com/astral-sh/ty/issues/154
### Basic Required Field Validation
```py
class Person(TypedDict):
name: str
age: int | None
# Error: Missing required field 'name' in TypedDict `Person` constructor
incomplete = Person(age=25)
# Error: Invalid argument to key "name" with declared type `str` on TypedDict `Person`
wrong_type = Person(name=123, age=25)
# Error: Invalid key access on TypedDict `Person`: Unknown key "extra"
extra_field = Person(name="Bob", age=25, extra=True)
```
<img width="773" height="191" alt="Screenshot 2025-08-07 at 17 59 22"
src="https://github.com/user-attachments/assets/79076d98-e85f-4495-93d6-a731aa72a5c9"
/>
### Support for `total=False`
```py
class OptionalPerson(TypedDict, total=False):
name: str
age: int | None
# All valid - all fields are optional with total=False
charlie = OptionalPerson()
david = OptionalPerson(name="David")
emily = OptionalPerson(age=30)
frank = OptionalPerson(name="Frank", age=25)
# But type validation and extra fields still apply
invalid_type = OptionalPerson(name=123) # Error: Invalid argument type
invalid_extra = OptionalPerson(extra=True) # Error: Invalid key access
```
### Dictionary Literal Validation
```py
# Type checking works for both constructors and dict literals
person: Person = {"name": "Alice", "age": 30}
reveal_type(person["name"]) # revealed: str
reveal_type(person["age"]) # revealed: int | None
# Error: Invalid key access on TypedDict `Person`: Unknown key "non_existing"
reveal_type(person["non_existing"]) # revealed: Unknown
```
### `Required`, `NotRequired`, `total`
```python
from typing import TypedDict
from typing_extensions import Required, NotRequired
class PartialUser(TypedDict, total=False):
name: Required[str] # Required despite total=False
age: int # Optional due to total=False
email: NotRequired[str] # Explicitly optional (redundant)
class User(TypedDict):
name: Required[str] # Explicitly required (redundant)
age: int # Required due to total=True
bio: NotRequired[str] # Optional despite total=True
# Valid constructions
partial = PartialUser(name="Alice") # name required, age optional
full = User(name="Bob", age=25) # name and age required, bio optional
# Inheritance maintains original field requirements
class Employee(PartialUser):
department: str # Required (new field)
# name: still Required (inherited)
# age: still optional (inherited)
emp = Employee(name="Charlie", department="Engineering") # ✅
Employee(department="Engineering") # ❌
e: Employee = {"age": 1} # ❌
```
<img width="898" height="683" alt="Screenshot 2025-08-11 at 22 02 57"
src="https://github.com/user-attachments/assets/4c1b18cd-cb2e-493a-a948-51589d121738"
/>
## Implementation
The implementation reuses existing validation logic done in
https://github.com/astral-sh/ruff/pull/19782
### ℹ️ Why I did NOT synthesize an `__init__` for `TypedDict`:
`TypedDict` inherits `dict.__init__(self, *args, **kwargs)` that accepts
all arguments.
The type resolution system finds this inherited signature **before**
looking for synthesized members.
So `own_synthesized_member()` is never called because a signature
already exists.
To force synthesis, you'd have to override Python’s inheritance
mechanism, which would break compatibility with the existing ecosystem.
This is why I went with ad-hoc validation. IMO it's the only viable
approach that respects Python’s
inheritance semantics while providing the required validation.
### Refacto of `Field`
**Before:**
```rust
struct Field<'db> {
declared_ty: Type<'db>,
default_ty: Option<Type<'db>>, // NamedTuple and dataclass only
init_only: bool, // dataclass only
init: bool, // dataclass only
is_required: Option<bool>, // TypedDict only
}
```
**After:**
```rust
struct Field<'db> {
declared_ty: Type<'db>,
kind: FieldKind<'db>,
}
enum FieldKind<'db> {
NamedTuple { default_ty: Option<Type<'db>> },
Dataclass { default_ty: Option<Type<'db>>, init_only: bool, init: bool },
TypedDict { is_required: bool },
}
```
## Test Plan
Updated Markdown tests
---------
Co-authored-by: David Peter <mail@david-peter.de>
## Summary
This PR limits the argument type expansion size for an overload call
evaluation to 512.
The limit chosen is arbitrary but I've taken the 256 limit from Pyright
into account and bumped it x2 to start with.
Initially, I actually started out by trying to refactor the entire
argument type expansion to be lazy. Currently, expanding a single
argument at any position eagerly creates the combination (argument
lists) and returns that (`Vec<CallArguments>`) but I thought we could
make it lazier by converting the return type of `expand` from
`Iterator<Item = Vec<CallArguments>>` to `Iterator<Item = Iterator<Item
= CallArguments>>` but that's proving to be difficult to implement
mainly because we **need** to maintain the previous expansion to
generate the next expansion which is the main reason to use
`std::iter::successors` in the first place.
Another approach would be to eagerly expand all the argument types and
then use the `combinations` from `itertools` to generate the
combinations but we would need to find the "boundary" between arguments
lists produced from expanding argument at position 1 and position 2
because that's important for the algorithm.
Closes: https://github.com/astral-sh/ty/issues/868
## Test Plan
Add test case to demonstrate the limit along with the diagnostic
snapshot stating that the limit has been reached.
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| actions/checkout | action | digest | `08c6903` -> `ff7abcd` |
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Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
|
[regex-automata](https://redirect.github.com/rust-lang/regex/tree/master/regex-automata)
([source](https://redirect.github.com/rust-lang/regex)) |
workspace.dependencies | patch | `0.4.9` -> `0.4.10` |
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### Release Notes
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<summary>rust-lang/regex (regex-automata)</summary>
###
[`v0.4.10`](https://redirect.github.com/rust-lang/regex/compare/regex-automata-0.4.9...regex-automata-0.4.10)
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [regex](https://redirect.github.com/rust-lang/regex) |
workspace.dependencies | patch | `1.11.1` -> `1.11.2` |
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\===================
This is a new patch release of `regex` with some minor fixes. A larger
number
of typo or lint fix patches were merged. Also, we now finally recommend
using
`std::sync::LazyLock`.
Improvements:
- [BUG
#​1217](https://redirect.github.com/rust-lang/regex/issues/1217):
Switch recommendation from `once_cell` to `std::sync::LazyLock`.
- [BUG
#​1225](https://redirect.github.com/rust-lang/regex/issues/1225):
Add `DFA::set_prefilter` to `regex-automata`.
Bug fixes:
- [BUG
#​1165](https://redirect.github.com/rust-lang/regex/pull/1150):
Remove `std` dependency from `perf-literal-multisubstring` crate
feature.
- [BUG
#​1165](https://redirect.github.com/rust-lang/regex/pull/1165):
Clarify the meaning of `(?R)$` in the documentation.
- [BUG
#​1281](https://redirect.github.com/rust-lang/regex/pull/1281):
Remove `fuzz/` and `record/` directories from published crate on
crates.io.
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
|
[tracing-indicatif](https://redirect.github.com/emersonford/tracing-indicatif)
| workspace.dependencies | patch | `0.3.12` -> `0.3.13` |
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- eliminate panics on internal lock poison
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Part of astral-sh/ty#994
## Summary
Add new special forms to `ty_extensions`, `Top[T]` and `Bottom[T]`.
Remove `ty_extensions.top_materialization` and
`ty_extensions.bottom_materialization`.
## Test Plan
Converted the existing `materialization.md` mdtest to the new syntax.
Added some tests for invalid use of the new special form.
In effect, we make the Salsa query aspect keyed only on whether we want
global symbols. We move everything else (hierarchical and querying) to
an aggregate step *after* the query.
This was a somewhat involved change since we want to return a flattened
list from visiting the source while also preserving enough information
to reform the symbols into a hierarchical structure that the LSP
expects. But I think overall the API has gotten simpler and we encode
more invariants into the type system. (For example, previously you got a
runtime assertion if you tried to provide a query string while enabling
hierarchical mode. But now that's prevented by construction.)
