mercurial/cmdutil.py

19729:dfefb719eb92

        if follow:
            raise util.Abort(_('can only follow copies/renames for explicit '
                               'filenames'))

        # The slow path checks files modified in every changeset.
        for i in sorted(revs):
            ctx = change(i)
            matches = filter(match, ctx.files())
            if matches:
                fncache[i] = matches
                wanted.add(i)

    class followfilter(object):
        def __init__(self, onlyfirst=False):
            self.startrev = nullrev
            self.roots = set()

19730:d184bae667e4

        if follow:
            raise util.Abort(_('can only follow copies/renames for explicit '
                               'filenames'))

        # The slow path checks files modified in every changeset.
        # This is really slow on large repos, so compute the set lazily.
        class lazywantedset(object):
            def __init__(self):
                self.set = set()
                self.revs = set(revs)

            # No need to worry about locality here because it will be accessed
            # in the same order as the increasing window below.
            def __contains__(self, value):
                if value in self.set:
                    return True
                elif not value in self.revs:
                    return False
                else:
                    self.revs.discard(value)
                    ctx = change(value)
                    matches = filter(match, ctx.files())
                    if matches:
                        fncache[value] = matches
                        self.set.add(value)
                        return True
                    return False

            def discard(self, value):
                self.revs.discard(value)
                self.set.discard(value)

        wanted = lazywantedset()

    class followfilter(object):
        def __init__(self, onlyfirst=False):
            self.startrev = nullrev
            self.roots = set()