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f764cdf | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | """Composition-oriented graph operations over RepoInfo."""
from __future__ import annotations
from collections import defaultdict
from .repo import RepoInfo
def dependency_components(info: RepoInfo) -> tuple[tuple[str, ...], ...]:
"""Return weakly connected hard-dependency components in topo order."""
neighbors: dict[str, set[str]] = defaultdict(set)
for edge in info.edges:
if edge.status != "resolved" or edge.source == edge.target:
continue
neighbors[edge.source].add(edge.target)
neighbors[edge.target].add(edge.source)
position = {path: index for index, path in enumerate(info.topological_order)}
unseen = set(position)
result: list[tuple[str, ...]] = []
for start in info.topological_order:
if start not in unseen:
continue
unseen.remove(start)
members: set[str] = {start}
stack = [start]
while stack:
current = stack.pop()
for neighbor in neighbors.get(current, ()):
if neighbor in unseen:
unseen.remove(neighbor)
members.add(neighbor)
stack.append(neighbor)
result.append(tuple(path for path in info.topological_order if path in members))
return tuple(result)
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