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ruff/crates
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David Peter 5a55bab3f3
[ty] Infer single-valuedness for enums based on int/str (#19510) 
## Summary

We previously didn't recognize `Literal[Color.RED]` as single-valued, if
the enum also derived from `str` or `int`:
```py
from enum import Enum

class Color(str, Enum):
    RED = "red"
    GREEN = "green"
    BLUE = "blue"

def _(color: Color):
    if color == Color.RED:
        reveal_type(color)  # previously: Color, now: Literal[Color.RED]
```

The reason for that was that `int` and `str` have "custom" `__eq__` and
`__ne__` implementations that return `bool`. We do not treat enum
literals from classes with custom `__eq__` and `__ne__` implementations
as single-valued, but of course we know that `int.__eq__` and
`str.__eq__` are well-behaved.

## Test Plan

New Markdown tests.
2025-07-23 15:55:42 +02:00
..
ruff Move fix suggestion to subdiagnostic (#19464) 2025-07-22 10:03:58 -04:00
ruff_annotate_snippets Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ruff_benchmark [ty] Add support for @warnings.deprecated (#19376) 2025-07-18 23:50:29 +00:00
ruff_cache
ruff_db Move fix suggestion to subdiagnostic (#19464) 2025-07-22 10:03:58 -04:00
ruff_dev Auto-generate environment variable references for ty (#19205) 2025-07-08 10:48:31 -04:00
ruff_diagnostics Combine OldDiagnostic and Diagnostic (#19053) 2025-07-03 13:01:09 -04:00
ruff_formatter
ruff_graph [ty] Make Module a Salsa ingredient 2025-07-23 09:46:40 -04:00
ruff_index Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ruff_linter [flake8-pyi] Skip fix if all Union members are None (PYI016) (#19416) 2025-07-22 17:03:14 +00:00
ruff_macros [ty] Merge ty_macros into ruff_macros (#19229) 2025-07-09 11:28:21 +00:00
ruff_notebook
ruff_options_metadata
ruff_python_ast [ty] Use an interval map for scopes by expression (#19025) 2025-07-14 13:50:58 +02:00
ruff_python_ast_integration_tests [ty] AST garbage collection (#18482) 2025-06-13 08:40:11 -04:00
ruff_python_codegen Fix f-string interpolation escaping (#18882) 2025-06-25 10:04:15 +02:00
ruff_python_formatter Update pre-commit dependencies (#19162) 2025-07-07 04:07:44 +00:00
ruff_python_index
ruff_python_literal
ruff_python_parser Fix unreachable panic in parser (#19183) 2025-07-20 22:04:14 +00:00
ruff_python_semantic [ty] Make Module a Salsa ingredient 2025-07-23 09:46:40 -04:00
ruff_python_stdlib
ruff_python_trivia Treat ty: comments as pragma comments (#18532) 2025-06-07 16:02:43 +02:00
ruff_python_trivia_integration_tests
ruff_server Move fix suggestion to subdiagnostic (#19464) 2025-07-22 10:03:58 -04:00
ruff_source_file Move Pylint rendering to ruff_db (#19340) 2025-07-15 10:14:49 -04:00
ruff_text_size [ty] Add environment variable to dump Salsa memory usage stats (#18928) 2025-06-26 21:27:51 +00:00
ruff_wasm Move fix suggestion to subdiagnostic (#19464) 2025-07-22 10:03:58 -04:00
ruff_workspace [flake8-type-checking, pyupgrade, ruff] Add from __future__ import annotations when it would allow new fixes (TC001, TC002, TC003, UP037, RUF013) (#19100) 2025-07-16 08:50:52 -04:00
ty [ty] Make Module a Salsa ingredient 2025-07-23 09:46:40 -04:00
ty_ide [ty] Make Module a Salsa ingredient 2025-07-23 09:46:40 -04:00
ty_project [ty] Invert ty_ide and ty_project dependency (#19501) 2025-07-23 07:37:46 +00:00
ty_python_semantic [ty] Infer single-valuedness for enums based on int/str (#19510) 2025-07-23 15:55:42 +02:00
ty_server [ty] Invert ty_ide and ty_project dependency (#19501) 2025-07-23 07:37:46 +00:00
ty_static [ty] Merge ty_macros into ruff_macros (#19229) 2025-07-09 11:28:21 +00:00
ty_test [ty] Track open files in the server (#19264) 2025-07-18 19:33:35 +05:30
ty_vendored [ty] Sync vendored typeshed stubs (#19461) 2025-07-21 14:01:42 +01:00
ty_wasm [ty] Add goto definition to playground (#19425) 2025-07-19 15:44:44 +02:00