dagutil: remove module
The previous commit removed the last consumer of this module.
.. api:: dagutil module has been removed
Some functionality has been moved to the dagop module. Other
functionality can be accomplished via revsets.
Differential Revision: https://phab.mercurial-scm.org/D4330
--- a/mercurial/dagutil.py Fri Aug 17 21:21:50 2018 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,49 +0,0 @@
-# dagutil.py - dag utilities for mercurial
-#
-# Copyright 2010 Benoit Boissinot <bboissin@gmail.com>
-# and Peter Arrenbrecht <peter@arrenbrecht.ch>
-#
-# This software may be used and distributed according to the terms of the
-# GNU General Public License version 2 or any later version.
-
-from __future__ import absolute_import
-
-from .node import nullrev
-
-from . import (
- dagop,
-)
-
-class revlogdag(object):
- '''dag interface to a revlog'''
-
- def __init__(self, revlog):
- self._revlog = revlog
-
- def linearize(self, ixs):
- '''linearize and topologically sort a list of revisions
-
- The linearization process tries to create long runs of revs where
- a child rev comes immediately after its first parent. This is done by
- visiting the heads of the given revs in inverse topological order,
- and for each visited rev, visiting its second parent, then its first
- parent, then adding the rev itself to the output list.
- '''
- sorted = []
- visit = list(dagop.headrevs(ixs, self._revlog.parentrevs))
- visit.sort(reverse=True)
- finished = set()
-
- while visit:
- cur = visit.pop()
- if cur < 0:
- cur = -cur - 1
- if cur not in finished:
- sorted.append(cur)
- finished.add(cur)
- else:
- visit.append(-cur - 1)
- visit += [p for p in self._revlog.parentrevs(cur)
- if p != nullrev and p in ixs and p not in finished]
- assert len(sorted) == len(ixs)
- return sorted