view hgext3rd/topic/revset.py @ 2223:2ba541e1ea01

stablerange: add warming of the subrange

Note that this means we build standard stable subrange for all changesets in the
repository this is significantly more than what we were computing before and
result is significantly more ranges being computed.

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
    error,
    revset,
    util,
)

from . import (
    constants,
    destination,
    stack,
)

try:
    mkmatcher = revset._stringmatcher
except AttributeError:
    mkmatcher = util.stringmatcher


def topicset(repo, subset, x):
    """`topic([topic])`
    Specified topic or all changes with any topic specified.

    If `topic` starts with `re:` the remainder of the name is treated
    as a regular expression.

    TODO: make `topic(revset)` work the same as `branch(revset)`.
    """
    args = revset.getargs(x, 0, 1, 'topic takes one or no arguments')
    if args:
        # match a specific topic
        topic = revset.getstring(args[0], 'topic() argument must be a string')
        if topic == '.':
            topic = repo['.'].extra().get('topic', '')
        _kind, _pattern, matcher = mkmatcher(topic)
    else:
        matcher = lambda t: bool(t)
    drafts = subset.filter(lambda r: repo[r].mutable())
    return drafts.filter(
        lambda r: matcher(repo[r].extra().get(constants.extrakey, '')))

def ngtipset(repo, subset, x):
    """`ngtip([branch])`

    The untopiced tip.

    Name is horrible so that people change it.
    """
    args = revset.getargs(x, 1, 1, 'topic takes one')
    # match a specific topic
    branch = revset.getstring(args[0], 'ngtip() argument must be a string')
    if branch == '.':
        branch = repo['.'].branch()
    return subset & revset.baseset(destination.ngtip(repo, branch))

def stackset(repo, subset, x):
    """`stack()`
    All relevant changes in the current topic,

    This is roughly equivalent to 'topic(.) - obsolete' with a sorting moving
    unstable changeset after there future parent (as if evolve where already
    run)."""
    topic = repo.currenttopic
    if not topic:
        raise error.Abort(_('no active topic to list'))
    # ordering hack, boo
    return revset.baseset(stack.getstack(repo, topic)) & subset


def modsetup(ui):
    revset.symbols.update({'topic': topicset})
    revset.symbols.update({'ngtip': ngtipset})
    revset.symbols.update({'stack': stackset})