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feat: magic len for RTuple types #19502

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feat: magic len for RTuple types #19502

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20a1b30
feat: magic len for RTuple types
BobTheBuidler Jul 25, 2025
0379719
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Jul 25, 2025
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6 changes: 5 additions & 1 deletion mypyc/irbuild/ll_builder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2260,7 +2260,11 @@ def builtin_len(self, val: Value, line: int, use_pyssize_t: bool = False) -> Val
"""
typ = val.type
size_value = None
if is_list_rprimitive(typ) or is_tuple_rprimitive(typ) or is_bytes_rprimitive(typ):
if isinstance(typ, RTuple):
return Integer(
len(typ.types), c_pyssize_t_rprimitive if use_pyssize_t else short_int_rprimitive
)
elif is_list_rprimitive(typ) or is_tuple_rprimitive(typ) or is_bytes_rprimitive(typ):
size_value = self.primitive_op(var_object_size, [val], line)
elif is_set_rprimitive(typ) or is_frozenset_rprimitive(typ):
elem_address = self.add(GetElementPtr(val, PySetObject, "used"))
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