ruff/crates/ty_python_semantic/resources
Douglas Creager 585ce12ace
[ty] typing.Self is bound by the method, not the class (#19784)
This fixes our logic for binding a legacy typevar with its binding
context. (To recap, a legacy typevar starts out "unbound" when it is
first created, and each time it's used in a generic class or function,
we "bind" it with the corresponding `Definition`.)

We treat `typing.Self` the same as a legacy typevar, and so we apply
this binding logic to it too. Before, we were using the enclosing class
as its binding context. But that's not correct — it's the method where
`typing.Self` is used that binds the typevar. (Each invocation of the
method will find a new specialization of `Self` based on the specific
instance type containing the invoked method.)

This required plumbing through some additional state to the
`in_type_expression` method.

This also revealed that we weren't handling `Self`-typed instance
attributes correctly (but were coincidentally not getting the expected
false positive diagnostics).
2025-08-06 17:26:17 -04:00
..
corpus [ty] Do not consider a type T to satisfy a method member on a protocol unless the method is available on the meta-type of T (#19187) 2025-07-25 11:16:04 +01:00
mdtest [ty] typing.Self is bound by the method, not the class (#19784) 2025-08-06 17:26:17 -04:00
primer [ty] Move pandas-stubs to bad.txt (#19659) 2025-07-31 12:33:24 +01:00
README.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00

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.