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David Peter db3dcd8ad6
[ty] Eagerly simplify 'True' and 'False' constraints (#18998) 
## Summary

Simplifies literal `True` and `False` conditions to `ALWAYS_TRUE` /
`ALWAYS_FALSE` during semantic index building. This allows us to eagerly
evaluate more constraints, which should help with performance (looks
like there is a tiny 1% improvement in instrumented benchmarks), but
also allows us to eliminate definitely-unreachable branches in
control-flow merging. This can lead to better type inference in some
cases because it allows us to retain narrowing constraints without
solving https://github.com/astral-sh/ty/issues/690 first:
```py
def _(c: int | None):
    if c is None:
        assert False
    
    reveal_type(c)  # int, previously: int | None
```

closes https://github.com/astral-sh/ty/issues/713

## Test Plan

* Regression test for https://github.com/astral-sh/ty/issues/713
* Made sure that all ecosystem diffs trace back to removed false
positives
2025-06-30 13:11:52 +02:00
..
ruff Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
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] Reduce 'complex_constrained_attributes_2' runtime (#19001) 2025-06-27 23:15:45 +02:00
ruff_cache Switch to Rust 2024 edition (#18129) 2025-05-16 13:25:28 +02:00
ruff_db Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ruff_dev Remove Message::to_rule (#18447) 2025-06-05 12:48:29 -04:00
ruff_diagnostics Add a ViolationMetadata::rule method (#18234) 2025-05-28 09:27:09 -04:00
ruff_formatter Switch to Rust 2024 edition (#18129) 2025-05-16 13:25:28 +02:00
ruff_graph Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ruff_index Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ruff_linter Minor code simplification (#19022) 2025-06-30 13:42:59 +05:30
ruff_macros Apply fix availability and applicability when adding to DiagnosticGuard and remove NoqaCode::rule (#18834) 2025-06-24 10:08:36 -04:00
ruff_notebook Switch to Rust 2024 edition (#18129) 2025-05-16 13:25:28 +02:00
ruff_options_metadata [ty] Document configuration schema (#17950) 2025-05-09 10:47:45 +02:00
ruff_python_ast [flake8-pyi] Expand Optional[A] to A | None (PYI016) (#18572) 2025-06-27 15:43:11 +00:00
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 Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ruff_python_index Switch to Rust 2024 edition (#18129) 2025-05-16 13:25:28 +02:00
ruff_python_literal Switch to Rust 2024 edition (#18129) 2025-05-16 13:25:28 +02:00
ruff_python_parser [ty] Add environment variable to dump Salsa memory usage stats (#18928) 2025-06-26 21:27:51 +00:00
ruff_python_semantic [flake8-pyi] Expand Optional[A] to A | None (PYI016) (#18572) 2025-06-27 15:43:11 +00:00
ruff_python_stdlib Switch to Rust 2024 edition (#18129) 2025-05-16 13:25:28 +02:00
ruff_python_trivia Treat ty: comments as pragma comments (#18532) 2025-06-07 16:02:43 +02:00
ruff_python_trivia_integration_tests Switch to Rust 2024 edition (#18129) 2025-05-16 13:25:28 +02:00
ruff_server Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ruff_source_file [ty] Add environment variable to dump Salsa memory usage stats (#18928) 2025-06-26 21:27:51 +00:00
ruff_text_size [ty] Add environment variable to dump Salsa memory usage stats (#18928) 2025-06-26 21:27:51 +00:00
ruff_wasm Convert OldDiagnostic::noqa_code to an Option<String> (#18946) 2025-06-27 11:36:55 -04:00
ruff_workspace Apply fix availability and applicability when adding to DiagnosticGuard and remove NoqaCode::rule (#18834) 2025-06-24 10:08:36 -04:00
ty [ty] Print salsa memory usage totals in mypy primer CI runs (#18973) 2025-06-28 15:09:50 -04:00
ty_ide Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ty_project [ty] Print salsa memory usage totals in mypy primer CI runs (#18973) 2025-06-28 15:09:50 -04:00
ty_python_semantic [ty] Eagerly simplify 'True' and 'False' constraints (#18998) 2025-06-30 13:11:52 +02:00
ty_server Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ty_test Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00
ty_vendored [ty] eliminate is_fully_static (#18799) 2025-06-24 18:02:05 -07:00
ty_wasm Update Rust toolchain to 1.88 and MSRV to 1.86 (#19011) 2025-06-28 20:24:00 +02:00