mercurial/repoview.py

43075:57875cf423c9

    phases,
    pycompat,
    tags as tagsmod,
    util,
)
from .utils import (
    repoviewutil,
)

def hideablerevs(repo):
    """Revision candidates to be hidden

    This is a standalone function to allow extensions to wrap it.

    assertions and lead to crashes."""
    obsoletes = obsolete.getrevs(repo, 'obsolete')
    internals = repo._phasecache.getrevset(repo, phases.localhiddenphases)
    internals = frozenset(internals)
    return obsoletes | internals

def pinnedrevs(repo):
    """revisions blocking hidden changesets from being filtered
    """

        for p in pfunc(stack.pop()):
            if p != nullrev and p in hidden:
                hidden.remove(p)
                stack.append(p)

def computehidden(repo, visibilityexceptions=None):
    """compute the set of hidden revision to filter

    During most operation hidden should be filtered."""
    assert not repo.changelog.filteredrevs

        visible = mutable - hidden
        _revealancestors(pfunc, hidden, visible)
    return frozenset(hidden)

def computesecret(repo, visibilityexceptions=None):
    """compute the set of revision that can never be exposed through hgweb

    Changeset in the secret phase (or above) should stay unaccessible."""
    assert not repo.changelog.filteredrevs
    secrets = repo._phasecache.getrevset(repo, phases.remotehiddenphases)
    return frozenset(secrets)

def computeunserved(repo, visibilityexceptions=None):
    """compute the set of revision that should be filtered when used a server

    Secret and hidden changeset should not pretend to be here."""

    if secrets:
        return frozenset(hiddens | secrets)
    else:
        return hiddens

def computemutable(repo, visibilityexceptions=None):
    assert not repo.changelog.filteredrevs
    # fast check to avoid revset call on huge repo
    if any(repo._phasecache.phaseroots[1:]):
        getphase = repo._phasecache.phase
        maymutable = filterrevs(repo, 'base')
        return frozenset(r for r in maymutable if getphase(repo, r))
    return frozenset()

def computeimpactable(repo, visibilityexceptions=None):
    """Everything impactable by mutable revision

    The immutable filter still have some chance to get invalidated. This will

            firstmutable = min(firstmutable, min(cl.rev(r) for r in roots))
    # protect from nullrev root
    firstmutable = max(0, firstmutable)
    return frozenset(pycompat.xrange(firstmutable, len(cl)))

# function to compute filtered set
#
# When adding a new filter you MUST update the table at:
#     mercurial.utils.repoviewutil.subsettable
# Otherwise your filter will have to recompute all its branches cache
# from scratch (very slow).
filtertable = {'visible': computehidden,
               'visible-hidden': computehidden,
               'served.hidden': computesecret,
               'served': computeunserved,
               'immutable':  computemutable,
               'base':  computeimpactable}

_basefiltername = list(filtertable)

def extrafilter(ui):
    """initialize extra filter and return its id

    If extra filtering is configured, we make sure the associated filtered view

    subsettable = repoviewutil.subsettable

    if combine('base') not in filtertable:
        for name in _basefiltername:
            def extrafilteredrevs(repo, *args, **kwargs):
                baserevs = filtertable[name](repo, *args, **kwargs)
                extrarevs = frozenset(repo.revs(frevs))
                return baserevs | extrarevs
            filtertable[combine(name)] = extrafilteredrevs
            if name in subsettable:
                subsettable[combine(name)] = combine(subsettable[name])
    return fid

def filterrevs(repo, filtername, visibilityexceptions=None):
    """returns set of filtered revision for this filter name

    visibilityexceptions is a set of revs which must are exceptions for

        if visibilityexceptions:
            return func(repo.unfiltered, visibilityexceptions)
        repo.filteredrevcache[filtername] = func(repo.unfiltered())
    return repo.filteredrevcache[filtername]

class repoview(object):
    """Provide a read/write view of a repo through a filtered changelog

    This object is used to access a filtered version of a repository without
    altering the original repository object itself. We can not alter the

        object.__setattr__(self, r'_unfilteredrepo', repo)
        object.__setattr__(self, r'filtername', filtername)
        object.__setattr__(self, r'_clcachekey', None)
        object.__setattr__(self, r'_clcache', None)
        # revs which are exceptions and must not be hidden
        object.__setattr__(self, r'_visibilityexceptions',
                           visibilityexceptions)

    # not a propertycache on purpose we shall implement a proper cache later
    @property
    def changelog(self):
        """return a filtered version of the changeset

        revs = filterrevs(unfi, self.filtername, self._visibilityexceptions)
        cl = self._clcache
        newkey = (unfilen, unfinode, hash(revs), unfichangelog._delayed)
        # if cl.index is not unfiindex, unfi.changelog would be
        # recreated, and our clcache refers to garbage object
        if (cl is not None and
            (cl.index is not unfiindex or newkey != self._clcachekey)):
            cl = None
        # could have been made None by the previous if
        if cl is None:
            cl = copy.copy(unfichangelog)
            cl.filteredrevs = revs

        if name == self.filtername and not visibilityexceptions:
            return self
        return self.unfiltered().filtered(name, visibilityexceptions)

    def __repr__(self):
        return r'<%s:%s %r>' % (self.__class__.__name__,
                                pycompat.sysstr(self.filtername),
                                self.unfiltered())

    # everything access are forwarded to the proxied repo
    def __getattr__(self, attr):
        return getattr(self._unfilteredrepo, attr)

    def __setattr__(self, attr, value):
        return setattr(self._unfilteredrepo, attr, value)

    def __delattr__(self, attr):
        return delattr(self._unfilteredrepo, attr)

# Python <3.4 easily leaks types via __mro__. See
# https://bugs.python.org/issue17950. We cache dynamically created types
# so they won't be leaked on every invocation of repo.filtered().
_filteredrepotypes = weakref.WeakKeyDictionary()

def newtype(base):
    """Create a new type with the repoview mixin and the given base class"""
    if base not in _filteredrepotypes:
        class filteredrepo(repoview, base):
            pass
        _filteredrepotypes[base] = filteredrepo
    return _filteredrepotypes[base]

43076:2372284d9457

    phases,
    pycompat,
    tags as tagsmod,
    util,
)
from .utils import repoviewutil


def hideablerevs(repo):
    """Revision candidates to be hidden

    This is a standalone function to allow extensions to wrap it.

    assertions and lead to crashes."""
    obsoletes = obsolete.getrevs(repo, 'obsolete')
    internals = repo._phasecache.getrevset(repo, phases.localhiddenphases)
    internals = frozenset(internals)
    return obsoletes | internals


def pinnedrevs(repo):
    """revisions blocking hidden changesets from being filtered
    """

        for p in pfunc(stack.pop()):
            if p != nullrev and p in hidden:
                hidden.remove(p)
                stack.append(p)


def computehidden(repo, visibilityexceptions=None):
    """compute the set of hidden revision to filter

    During most operation hidden should be filtered."""
    assert not repo.changelog.filteredrevs

        visible = mutable - hidden
        _revealancestors(pfunc, hidden, visible)
    return frozenset(hidden)


def computesecret(repo, visibilityexceptions=None):
    """compute the set of revision that can never be exposed through hgweb

    Changeset in the secret phase (or above) should stay unaccessible."""
    assert not repo.changelog.filteredrevs
    secrets = repo._phasecache.getrevset(repo, phases.remotehiddenphases)
    return frozenset(secrets)


def computeunserved(repo, visibilityexceptions=None):
    """compute the set of revision that should be filtered when used a server

    Secret and hidden changeset should not pretend to be here."""

    if secrets:
        return frozenset(hiddens | secrets)
    else:
        return hiddens


def computemutable(repo, visibilityexceptions=None):
    assert not repo.changelog.filteredrevs
    # fast check to avoid revset call on huge repo
    if any(repo._phasecache.phaseroots[1:]):
        getphase = repo._phasecache.phase
        maymutable = filterrevs(repo, 'base')
        return frozenset(r for r in maymutable if getphase(repo, r))
    return frozenset()


def computeimpactable(repo, visibilityexceptions=None):
    """Everything impactable by mutable revision

    The immutable filter still have some chance to get invalidated. This will

            firstmutable = min(firstmutable, min(cl.rev(r) for r in roots))
    # protect from nullrev root
    firstmutable = max(0, firstmutable)
    return frozenset(pycompat.xrange(firstmutable, len(cl)))


# function to compute filtered set
#
# When adding a new filter you MUST update the table at:
#     mercurial.utils.repoviewutil.subsettable
# Otherwise your filter will have to recompute all its branches cache
# from scratch (very slow).
filtertable = {
    'visible': computehidden,
    'visible-hidden': computehidden,
    'served.hidden': computesecret,
    'served': computeunserved,
    'immutable': computemutable,
    'base': computeimpactable,
}

_basefiltername = list(filtertable)


def extrafilter(ui):
    """initialize extra filter and return its id

    If extra filtering is configured, we make sure the associated filtered view

    subsettable = repoviewutil.subsettable

    if combine('base') not in filtertable:
        for name in _basefiltername:

            def extrafilteredrevs(repo, *args, **kwargs):
                baserevs = filtertable[name](repo, *args, **kwargs)
                extrarevs = frozenset(repo.revs(frevs))
                return baserevs | extrarevs

            filtertable[combine(name)] = extrafilteredrevs
            if name in subsettable:
                subsettable[combine(name)] = combine(subsettable[name])
    return fid


def filterrevs(repo, filtername, visibilityexceptions=None):
    """returns set of filtered revision for this filter name

    visibilityexceptions is a set of revs which must are exceptions for

        if visibilityexceptions:
            return func(repo.unfiltered, visibilityexceptions)
        repo.filteredrevcache[filtername] = func(repo.unfiltered())
    return repo.filteredrevcache[filtername]


class repoview(object):
    """Provide a read/write view of a repo through a filtered changelog

    This object is used to access a filtered version of a repository without
    altering the original repository object itself. We can not alter the

        object.__setattr__(self, r'_unfilteredrepo', repo)
        object.__setattr__(self, r'filtername', filtername)
        object.__setattr__(self, r'_clcachekey', None)
        object.__setattr__(self, r'_clcache', None)
        # revs which are exceptions and must not be hidden
        object.__setattr__(self, r'_visibilityexceptions', visibilityexceptions)

    # not a propertycache on purpose we shall implement a proper cache later
    @property
    def changelog(self):
        """return a filtered version of the changeset

        revs = filterrevs(unfi, self.filtername, self._visibilityexceptions)
        cl = self._clcache
        newkey = (unfilen, unfinode, hash(revs), unfichangelog._delayed)
        # if cl.index is not unfiindex, unfi.changelog would be
        # recreated, and our clcache refers to garbage object
        if cl is not None and (
            cl.index is not unfiindex or newkey != self._clcachekey
        ):
            cl = None
        # could have been made None by the previous if
        if cl is None:
            cl = copy.copy(unfichangelog)
            cl.filteredrevs = revs

        if name == self.filtername and not visibilityexceptions:
            return self
        return self.unfiltered().filtered(name, visibilityexceptions)

    def __repr__(self):
        return r'<%s:%s %r>' % (
            self.__class__.__name__,
            pycompat.sysstr(self.filtername),
            self.unfiltered(),
        )

    # everything access are forwarded to the proxied repo
    def __getattr__(self, attr):
        return getattr(self._unfilteredrepo, attr)

    def __setattr__(self, attr, value):
        return setattr(self._unfilteredrepo, attr, value)

    def __delattr__(self, attr):
        return delattr(self._unfilteredrepo, attr)


# Python <3.4 easily leaks types via __mro__. See
# https://bugs.python.org/issue17950. We cache dynamically created types
# so they won't be leaked on every invocation of repo.filtered().
_filteredrepotypes = weakref.WeakKeyDictionary()


def newtype(base):
    """Create a new type with the repoview mixin and the given base class"""
    if base not in _filteredrepotypes:

        class filteredrepo(repoview, base):
            pass

        _filteredrepotypes[base] = filteredrepo
    return _filteredrepotypes[base]