hgext3rd/topic/revset.py
author Pulkit Goyal <7895pulkit@gmail.com>
Tue, 04 Jul 2017 01:30:14 +0530
changeset 2712 f19b314d8475
parent 2692 96843c68acc8
child 2915 b3abdb3d819e
permissions -rw-r--r--
topics: add t0 and b0 to the stack t0 or b0 will be the base of the stack and it's the parent of t1 or b1. The cool thing about this is that if you update to t0 using `hg up t0` or do `hg prev` on t1, you will be updated to t0 with the current topic preserved. This patch adds t0 to stack and implement the preserving topic case for t0 while using `hg update`.
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from __future__ import absolute_import
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from mercurial import (
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    revset,
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    util,
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)
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from . import (
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    constants,
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    destination,
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    stack,
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)
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try:
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    mkmatcher = revset._stringmatcher
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except AttributeError:
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    mkmatcher = util.stringmatcher
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def topicset(repo, subset, x):
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    """`topic([topic])`
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    Specified topic or all changes with any topic specified.
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    If `topic` starts with `re:` the remainder of the name is treated
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    as a regular expression.
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    TODO: make `topic(revset)` work the same as `branch(revset)`.
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    """
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    args = revset.getargs(x, 0, 1, 'topic takes one or no arguments')
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    if args:
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        # match a specific topic
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        topic = revset.getstring(args[0], 'topic() argument must be a string')
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        if topic == '.':
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            topic = repo['.'].extra().get('topic', '')
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        _kind, _pattern, matcher = mkmatcher(topic)
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    else:
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        matcher = lambda t: bool(t)
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    mutable = revset._notpublic(repo, revset.fullreposet(repo), ())
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    rawchange = repo.changelog.changelogrevision
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    key = constants.extrakey
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    def matchtopic(r):
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        topic = rawchange(r).extra.get(key)
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        if topic is None:
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            return False
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        return matcher(topic)
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    return (subset & mutable).filter(matchtopic)
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def ngtipset(repo, subset, x):
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    """`ngtip([branch])`
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    The untopiced tip.
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    Name is horrible so that people change it.
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    """
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    args = revset.getargs(x, 1, 1, 'topic takes one')
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    # match a specific topic
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    branch = revset.getstring(args[0], 'ngtip() argument must be a string')
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    if branch == '.':
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        branch = repo['.'].branch()
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    return subset & revset.baseset(destination.ngtip(repo, branch))
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def stackset(repo, subset, x):
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    """`stack()`
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    All relevant changes in the current topic,
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    This is roughly equivalent to 'topic(.) - obsolete' with a sorting moving
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    unstable changeset after there future parent (as if evolve where already
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    run)."""
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    err = 'stack() takes no argument, it works on current topic'
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    revset.getargs(x, 0, 0, err)
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    topic = repo.currenttopic
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    topic = None
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    branch = None
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    if not topic and repo.currenttopic:
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        topic = repo.currenttopic
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    if not topic:
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        branch = repo[None].branch()
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    return revset.baseset(stack.getstack(repo, branch=branch, topic=topic)[1:]) & subset
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def modsetup(ui):
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    revset.symbols.update({'topic': topicset})
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    revset.symbols.update({'ngtip': ngtipset})
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    revset.symbols.update({'stack': stackset})