Add basic mypy type checking for vec types #20669
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Add basic type checking support for the vec[T] type from mypyc.librt.vecs: - Register vec as a special form in semanal.py - Add type analysis for vec with item type validation - Add plugin support for vec in default.py - Add test cases for vec type checking
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
p-sawicki
approved these changes
Jan 28, 2026
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Check that item type is valid, and infer
i64as the type oflen(<vec>).vectypes only support specific simple item types that are quick to type check at runtime.Related issue: mypyc/mypyc#840