comparison mercurial/phases.py @ 44065:ab41dad7345e

phases: make phasecache._phasesets immutable

Previously, some code paths would mutate the cache itself, which
could give weird results if multiple revsets got evaluated through
that path.

Differential Revision: https://phab.mercurial-scm.org/D7854

44064:8eb3c52337a6

            if not phases:
                return smartset.fullreposet(repo)

        # fast path: _phasesets contains the interesting sets,
        # might only need a union and post-filtering.
        if len(phases) == 1:
            [p] = phases
            revs = self._phasesets[p]
        else:
            # revs has the revisions in all *other* phases.
            revs = set.union(*[self._phasesets[p] for p in phases])

        def _addwdir(wdirsubset, wdirrevs):
            if wdirrev in wdirsubset and repo[None].phase() in phases:
                # The working dir would never be in the # cache, but it was in
                # the subset being filtered for its phase (or filtered out,
                # depending on publicphase), so add it to the output to be
                # included (or filtered out).
                wdirrevs.add(wdirrev)

44065:ab41dad7345e

            if not phases:
                return smartset.fullreposet(repo)

        # fast path: _phasesets contains the interesting sets,
        # might only need a union and post-filtering.
        revsneedscopy = False
        if len(phases) == 1:
            [p] = phases
            revs = self._phasesets[p]
            revsneedscopy = True  # Don't modify _phasesets
        else:
            # revs has the revisions in all *other* phases.
            revs = set.union(*[self._phasesets[p] for p in phases])

        def _addwdir(wdirsubset, wdirrevs):
            if wdirrev in wdirsubset and repo[None].phase() in phases:
                if revsneedscopy:
                    wdirrevs = wdirrevs.copy()
                # The working dir would never be in the # cache, but it was in
                # the subset being filtered for its phase (or filtered out,
                # depending on publicphase), so add it to the output to be
                # included (or filtered out).
                wdirrevs.add(wdirrev)