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ruff/crates/ty_python_semantic
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David Peter e55bc943e5
[ty] Reachability and narrowing for enum methods (#21130) 
## Summary

Adds proper type narrowing and reachability analysis for matching on
non-inferable type variables bound to enums. For example:

```py
from enum import Enum

class Answer(Enum):
    NO = 0
    YES = 1

    def is_yes(self) -> bool:  # no error here!
        match self:
            case Answer.YES:
                return True
            case Answer.NO:
                return False
```

closes https://github.com/astral-sh/ty/issues/1404

## Test Plan

Added regression tests
2025-10-30 15:38:57 +01:00
..
resources [ty] Reachability and narrowing for enum methods (#21130) 2025-10-30 15:38:57 +01:00
src [ty] Reachability and narrowing for enum methods (#21130) 2025-10-30 15:38:57 +01:00
tests [ty] Limit shown import paths to at most 5 unless ty runs with -v (#20912) 2025-10-16 13:18:09 +02:00
build.rs
Cargo.toml [ty] Some more simplifications when rendering constraint sets (#21009) 2025-10-22 13:38:44 -04:00
mdtest.py [ty] Set INSTA_FORCE_PASS and INSTA_OUTPUT environment variables from mdtest.py (#21029) 2025-10-22 15:32:14 +01:00
mdtest.py.lock