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Try some aliases speed-up #19810

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Merged
ilevkivskyi merged 3 commits into from
Sep 8, 2025
Merged

Try some aliases speed-up #19810

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37218fd
Try some aliases speed-up
ilevkivskyi Sep 8, 2025
14573d5
Some tweaks to use implicit caching
ilevkivskyi Sep 8, 2025
02d3d12
Avoid duplicate checking of alias targets
ilevkivskyi Sep 8, 2025
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Avoid duplicate checking of alias targets
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@ilevkivskyi
ilevkivskyi committed Sep 8, 2025
commit 02d3d12c4273cf9df09ee5bf6899ef22e40795f4
2 changes: 2 additions & 0 deletions mypy/mixedtraverser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,8 @@ def visit_class_def(self, o: ClassDef, /) -> None:
if info:
for base in info.bases:
base.accept(self)
if info.special_alias:
info.special_alias.accept(self)

def visit_type_alias_expr(self, o: TypeAliasExpr, /) -> None:
super().visit_type_alias_expr(o)
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2 changes: 0 additions & 2 deletions mypy/semanal_typeargs.py
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Expand Up @@ -100,8 +100,6 @@ def visit_type_alias_type(self, t: TypeAliasType) -> None:
if not is_error:
# If there was already an error for the alias itself, there is no point in checking
# the expansion, most likely it will result in the same kind of error.
if t.alias is not None:
t.alias.accept(self)
if t.args:
# Since we always allow unbounded type variables in alias definitions, we need
# to verify the arguments satisfy the upper bounds of the expansion as well.
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