Commit graph

9 commits

Author SHA1 Message Date
Douglas Creager
bdccb37b4a
[ty] Apply function specialization to all overloads (#18020)
Some checks are pending
CI / Determine changes (push) Waiting to run
CI / cargo fmt (push) Waiting to run
CI / cargo clippy (push) Blocked by required conditions
CI / cargo test (linux) (push) Blocked by required conditions
CI / cargo test (linux, release) (push) Blocked by required conditions
CI / cargo test (windows) (push) Blocked by required conditions
CI / cargo test (wasm) (push) Blocked by required conditions
CI / cargo build (release) (push) Waiting to run
CI / cargo build (msrv) (push) Blocked by required conditions
CI / cargo fuzz build (push) Blocked by required conditions
CI / fuzz parser (push) Blocked by required conditions
CI / test scripts (push) Blocked by required conditions
CI / ecosystem (push) Blocked by required conditions
CI / Fuzz for new ty panics (push) Blocked by required conditions
CI / cargo shear (push) Blocked by required conditions
CI / python package (push) Waiting to run
CI / pre-commit (push) Waiting to run
CI / mkdocs (push) Waiting to run
CI / formatter instabilities and black similarity (push) Blocked by required conditions
CI / test ruff-lsp (push) Blocked by required conditions
CI / check playground (push) Blocked by required conditions
CI / benchmarks (push) Blocked by required conditions
[ty Playground] Release / publish (push) Waiting to run
Function literals have an optional specialization, which is applied to
the parameter/return type annotations lazily when the function's
signature is requested. We were previously only applying this
specialization to the final overload of an overloaded function.

This manifested most visibly for `list.__add__`, which has an overloaded
definition in the typeshed:


b398b83631/crates/ty_vendored/vendor/typeshed/stdlib/builtins.pyi (L1069-L1072)

Closes https://github.com/astral-sh/ty/issues/314
2025-05-12 13:48:54 -04:00
Andrew Gallant
346e82b572 ty_python_semantic: add union type context to function call type errors
This context gets added only when calling a function through a union
type.
2025-05-09 13:40:51 -04:00
Alex Waygood
d1bb10a66b
[ty] Understand classes that inherit from subscripted Protocol[] as generic (#17832) 2025-05-09 17:39:15 +01:00
Alex Waygood
9b694ada82
[ty] Report duplicate Protocol or Generic base classes with [duplicate-base], not [inconsistent-mro] (#17971) 2025-05-08 23:41:22 +01:00
Charlie Marsh
a2e9a7732a
Update class literal display to use <class 'Foo'> style (#17889)
## Summary

Closes https://github.com/astral-sh/ruff/issues/17238.
2025-05-06 20:11:25 -04:00
Douglas Creager
9085f18353
[ty] Propagate specializations to ancestor base classes (#17892)
@AlexWaygood discovered that even though we've been propagating
specializations to _parent_ base classes correctly, we haven't been
passing them on to _grandparent_ base classes:
https://github.com/astral-sh/ruff/pull/17832#issuecomment-2854360969

```py
class Bar[T]:
    x: T

class Baz[T](Bar[T]): ...
class Spam[T](Baz[T]): ...

reveal_type(Spam[int]().x) # revealed: `T`, but should be `int`
```

This PR updates the MRO machinery to apply the current specialization
when starting to iterate the MRO of each base class.
2025-05-06 14:25:21 -04:00
Douglas Creager
ada4c4cb1f
[ty] Don't require default typevars when specializing (#17872)
If a typevar is declared as having a default, we shouldn't require a
type to be specified for that typevar when explicitly specializing a
generic class:

```py
class WithDefault[T, U = int]: ...

reveal_type(WithDefault[str]())  # revealed: WithDefault[str, int]
```

---------

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
2025-05-05 18:29:30 -04:00
Douglas Creager
47e3aa40b3
[ty] Specialize bound methods and nominal instances (#17865)
Fixes
https://github.com/astral-sh/ruff/pull/17832#issuecomment-2851224968. We
had a comment that we did not need to apply specializations to generic
aliases, or to the bound `self` of a bound method, because they were
already specialized. But they might be specialized with a type variable,
which _does_ need to be specialized, in the case of a "multi-step"
specialization, such as:

```py
class LinkedList[T]: ...

class C[U]:
    def method(self) -> LinkedList[U]:
        return LinkedList[U]()
```

---------

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
2025-05-05 17:17:36 -04:00
Micha Reiser
b51c4f82ea
Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
Renamed from crates/red_knot_python_semantic/resources/mdtest/generics/legacy/classes.md (Browse further)