comparison mercurial/context.py @ 43760:1e87851dba63

changectx: add a "maybe filtered" filtered attribute

There are changeset that we know not to be filtered (eg: `null`). In this case,
we could access some information without triggering changelog filtering. We add
an attribute to changectx that track this property.

Differential Revision: https://phab.mercurial-scm.org/D7483

43759:1a415548794a

class changectx(basectx):
    """A changecontext object makes access to data related to a particular
    changeset convenient. It represents a read-only context already present in
    the repo."""

    def __init__(self, repo, rev, node):
        super(changectx, self).__init__(repo)
        self._rev = rev
        self._node = node

    def __hash__(self):
        try:
            return hash(self._rev)
        except AttributeError:

    __bool__ = __nonzero__

    @propertycache
    def _changeset(self):
        return self._repo.changelog.changelogrevision(self.rev())

    @propertycache
    def _manifest(self):
        return self._manifestctx.read()

43760:1e87851dba63

class changectx(basectx):
    """A changecontext object makes access to data related to a particular
    changeset convenient. It represents a read-only context already present in
    the repo."""

    def __init__(self, repo, rev, node, maybe_filtered=True):
        super(changectx, self).__init__(repo)
        self._rev = rev
        self._node = node
        # When maybe_filtered is True, the revision might be affected by
        # changelog filtering and operation through the filtered changelog must be used.
        #
        # When maybe_filtered is False, the revision has already been checked
        # against filtering and is not filtered. Operation through the
        # unfiltered changelog might be used in some case.
        self._maybe_filtered = maybe_filtered

    def __hash__(self):
        try:
            return hash(self._rev)
        except AttributeError:

    __bool__ = __nonzero__

    @propertycache
    def _changeset(self):
        if self._maybe_filtered:
            repo = self._repo
        else:
            repo = self._repo.unfiltered()
        return repo.changelog.changelogrevision(self.rev())

    @propertycache
    def _manifest(self):
        return self._manifestctx.read()