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[syntax-errors] Alternative match patterns bind different names (#20682)
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## Summary

<!-- What's the purpose of the change? What does it do, and why? -->
This PR implements semantic syntax error where alternative patterns bind
different names

## Test Plan

<!-- How was it tested? -->
I have written inline tests as directed in #17412

---------

Signed-off-by: 11happy <soni5happy@gmail.com>
Co-authored-by: Brent Westbrook <brentrwestbrook@gmail.com>
This commit is contained in:
Bhuminjay Soni 2025-10-18 03:05:48 +05:30 • committed by GitHub
parent 8ca2b5555d
commit 7198e53182
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9 changed files with 1805 additions and 4 deletions
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13
crates/ruff_python_parser/resources/inline/err/different_match_pattern_bindings.py Normal file
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@ -0,0 +1,13 @@
match x:
case [a] | [b]: ...
case [a] | []: ...
case (x, y) | (x,): ...
case [a, _] | [a, b]: ...
case (x, (y | z)): ...
case [a] | [b] | [c]: ...
case [] | [a]: ...
case [a] | [C(x)]: ...
case [[a] | [b]]: ...
case [C(a)] | [C(b)]: ...
case [C(D(a))] | [C(D(b))]: ...
case [(a, b)] | [(c, d)]: ...

6
crates/ruff_python_parser/resources/inline/ok/different_match_pattern_bindings.py Normal file
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@ -0,0 +1,6 @@
match x:
case [a] | [a]: ...
case (x, y) | (x, y): ...
case (x, (y | y)): ...
case [a, _] | [a, _]: ...
case [a] | [C(a)]: ...