language-servers/ruff
1
0
Fork 0
mirror of https://github.com/astral-sh/ruff.git synced 2025-10-27 02:16:54 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1
ruff/crates/ty_python_semantic/resources
History
Ibraheem Ahmed 1ade4f2081
[ty] Avoid unnecessarily widening generic specializations (#20875) 
## Summary

Ignore the type context when specializing a generic call if it leads to
an unnecessarily wide return type. For example, [the example mentioned
here](https://github.com/astral-sh/ruff/pull/20796#issuecomment-3403319536)
works as expected after this change:
```py
def id[T](x: T) -> T:
    return x

def _(i: int):
    x: int | None = id(i)
    y: int | None = i
    reveal_type(x)  # revealed: int
    reveal_type(y)  # revealed: int
```

I also added extended our usage of `filter_disjoint_elements` to tuple
and typed-dict inference, which resolves
https://github.com/astral-sh/ty/issues/1266.
2025-10-16 19:17:37 +00:00
..
corpus [ty] fix deferred name loading in PEP695 generic classes/functions (#19888) 2025-08-13 15:51:59 -07:00
mdtest [ty] Avoid unnecessarily widening generic specializations (#20875) 2025-10-16 19:17:37 +00:00
primer Fix run-away for mutually referential instance attributes (#20645) 2025-10-16 13:24:41 +02:00
README.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00

README.md

Markdown files within the mdtest/ subdirectory are tests of type inference and type checking; executed by the tests/mdtest.rs integration test.

See crates/ty_test/README.md for documentation of this test format.