mercurial/branchmap.py

18306:06185554e7e3

        """Given a branchhead cache, self, that may have extra nodes or be
        missing heads, and a generator of nodes that are at least a superset of
        heads missing, this function updates self to be correct.
        """
        cl = repo.changelog
        ctxgen = (repo[r] for r in revgen)
        # collect new branch entries
        newbranches = {}
        for c in ctxgen:
            newbranches.setdefault(c.branch(), []).append(c.node())
        # if older branchheads are reachable from new ones, they aren't
        # really branchheads. Note checking parents is insufficient:
        # 1 (branch a) -> 2 (branch b) -> 3 (branch a)
        for branch, newnodes in newbranches.iteritems():
            bheads = self.setdefault(branch, [])

18307:0eed2546118a

        """Given a branchhead cache, self, that may have extra nodes or be
        missing heads, and a generator of nodes that are at least a superset of
        heads missing, this function updates self to be correct.
        """
        cl = repo.changelog
        # collect new branch entries
        newbranches = {}
        getbranch = cl.branch
        for r in revgen:
            newbranches.setdefault(getbranch(r), []).append(cl.node(r))
        # if older branchheads are reachable from new ones, they aren't
        # really branchheads. Note checking parents is insufficient:
        # 1 (branch a) -> 2 (branch b) -> 3 (branch a)
        for branch, newnodes in newbranches.iteritems():
            bheads = self.setdefault(branch, [])