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## Summary This PR adds support for control flow for match statement. It also adds the necessary infrastructure required for narrowing constraints in case blocks and implements the logic for `PatternMatchSingleton` which is either `None` / `True` / `False`. Even after this the inferred type doesn't get simplified completely, there's a TODO for that in the test code. ## Test Plan Add test cases for control flow for (a) when there's a wildcard pattern and (b) when there isn't. There's also a test case to verify the narrowing logic. --------- Co-authored-by: Carl Meyer <carl@astral.sh>
16 lines
377 B
Rust
16 lines
377 B
Rust
use ruff_python_parser::parse_module;
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#[test]
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fn pattern_is_wildcard() {
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let source_code = r"
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match subject:
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case _ as x: ...
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case _ | _: ...
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case _: ...
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";
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let parsed = parse_module(source_code).unwrap();
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let cases = &parsed.syntax().body[0].as_match_stmt().unwrap().cases;
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for case in cases {
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assert!(case.pattern.is_wildcard());
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}
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}
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