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Improve type hints to fix TODOs #439

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Merged
merged 1 commit into from
Jul 16, 2024
Merged

Improve type hints to fix TODOs #439

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12 changes: 7 additions & 5 deletions src/semver/version.py
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@
Comparator = Callable[["Version", Comparable], bool]

T = TypeVar("T", bound="Version")
T_cmp = TypeVar("T_cmp", tuple, str, int)


def _comparator(operator: Comparator) -> Comparator:
Expand All @@ -53,7 +54,7 @@ def wrapper(self: "Version", other: Comparable) -> bool:
return wrapper


def _cmp(a, b): # TODO: type hints
def _cmp(a: T_cmp, b: T_cmp) -> int:
"""Return negative if a<b, zero if a==b, positive if a>b."""
return (a > b) - (a < b)

Expand Down Expand Up @@ -137,7 +138,7 @@ def __init__(
self._build = None if build is None else str(build)

@classmethod
def _nat_cmp(cls, a, b): # TODO: type hints
def _nat_cmp(cls, a: Optional[str], b: Optional[str]) -> int:
def cmp_prerelease_tag(a, b):
if isinstance(a, int) and isinstance(b, int):
return _cmp(a, b)
Expand All @@ -150,9 +151,10 @@ def cmp_prerelease_tag(a, b):

a, b = a or "", b or ""
a_parts, b_parts = a.split("."), b.split(".")
a_parts = [int(x) if re.match(r"^\d+$", x) else x for x in a_parts]
b_parts = [int(x) if re.match(r"^\d+$", x) else x for x in b_parts]
for sub_a, sub_b in zip(a_parts, b_parts):
re_digits = re.compile(r"^\d+$")
parts_a = [int(x) if re_digits.match(x) else x for x in a_parts]
parts_b = [int(x) if re_digits.match(x) else x for x in b_parts]
for sub_a, sub_b in zip(parts_a, parts_b):
cmp_result = cmp_prerelease_tag(sub_a, sub_b)
if cmp_result != 0:
return cmp_result
Expand Down
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