Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/dagop.py @ 35279:0d27685b4a2f

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dagop: copy basefilectx.ancestors() to free function The primary goal of this series is to make follow() support multiple start revisions. dagop.filectxancestors() will be extended to take multiple filectxs. basefilectx.ancestors() is not forwarded to this function because doing that would resurrect the performance issue fixed by 24b57c3899f8.
author Yuya Nishihara <yuya@tcha.org>
date Thu, 22 Sep 2016 17:16:53 +0900
parents c6c8a52e28c9
children d90c534099b1
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1 # dagop.py - graph ancestry and topology algorithm for revset
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2 #
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3 # Copyright 2010 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 import heapq
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11
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12 from . import (
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13 error,
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14 mdiff,
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15 node,
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16 patch,
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17 smartset,
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18 )
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19
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20 baseset = smartset.baseset
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21 generatorset = smartset.generatorset
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22
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23 # possible maximum depth between null and wdir()
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24 _maxlogdepth = 0x80000000
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25
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26 def _walkrevtree(pfunc, revs, startdepth, stopdepth, reverse):
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27 """Walk DAG using 'pfunc' from the given 'revs' nodes
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28
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29 'pfunc(rev)' should return the parent/child revisions of the given 'rev'
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30 if 'reverse' is True/False respectively.
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31
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32 Scan ends at the stopdepth (exlusive) if specified. Revisions found
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33 earlier than the startdepth are omitted.
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34 """
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35 if startdepth is None:
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36 startdepth = 0
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37 if stopdepth is None:
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38 stopdepth = _maxlogdepth
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39 if stopdepth == 0:
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40 return
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41 if stopdepth < 0:
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42 raise error.ProgrammingError('negative stopdepth')
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43 if reverse:
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44 heapsign = -1 # max heap
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45 else:
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46 heapsign = +1 # min heap
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47
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48 # load input revs lazily to heap so earlier revisions can be yielded
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49 # without fully computing the input revs
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50 revs.sort(reverse)
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51 irevs = iter(revs)
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52 pendingheap = [] # [(heapsign * rev, depth), ...] (i.e. lower depth first)
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53
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54 inputrev = next(irevs, None)
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55 if inputrev is not None:
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56 heapq.heappush(pendingheap, (heapsign * inputrev, 0))
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57
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58 lastrev = None
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59 while pendingheap:
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60 currev, curdepth = heapq.heappop(pendingheap)
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61 currev = heapsign * currev
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62 if currev == inputrev:
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63 inputrev = next(irevs, None)
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64 if inputrev is not None:
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65 heapq.heappush(pendingheap, (heapsign * inputrev, 0))
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66 # rescan parents until curdepth >= startdepth because queued entries
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67 # of the same revision are iterated from the lowest depth
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68 foundnew = (currev != lastrev)
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69 if foundnew and curdepth >= startdepth:
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70 lastrev = currev
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71 yield currev
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72 pdepth = curdepth + 1
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73 if foundnew and pdepth < stopdepth:
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74 for prev in pfunc(currev):
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75 if prev != node.nullrev:
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76 heapq.heappush(pendingheap, (heapsign * prev, pdepth))
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77
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78 def filectxancestors(fctx, followfirst=False):
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79 """Like filectx.ancestors()"""
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80 visit = {}
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81 c = fctx
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82 if followfirst:
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83 cut = 1
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84 else:
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85 cut = None
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86
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87 while True:
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88 for parent in c.parents()[:cut]:
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89 visit[(parent.linkrev(), parent.filenode())] = parent
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90 if not visit:
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91 break
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92 c = visit.pop(max(visit))
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93 yield c
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94
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95 def _genrevancestors(repo, revs, followfirst, startdepth, stopdepth, cutfunc):
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96 if followfirst:
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97 cut = 1
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98 else:
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99 cut = None
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100 cl = repo.changelog
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101 def plainpfunc(rev):
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102 try:
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103 return cl.parentrevs(rev)[:cut]
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104 except error.WdirUnsupported:
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105 return (pctx.rev() for pctx in repo[rev].parents()[:cut])
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106 if cutfunc is None:
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107 pfunc = plainpfunc
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108 else:
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109 pfunc = lambda rev: [r for r in plainpfunc(rev) if not cutfunc(r)]
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110 revs = revs.filter(lambda rev: not cutfunc(rev))
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111 return _walkrevtree(pfunc, revs, startdepth, stopdepth, reverse=True)
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112
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113 def revancestors(repo, revs, followfirst=False, startdepth=None,
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114 stopdepth=None, cutfunc=None):
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115 """Like revlog.ancestors(), but supports additional options, includes
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116 the given revs themselves, and returns a smartset
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117
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118 Scan ends at the stopdepth (exlusive) if specified. Revisions found
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119 earlier than the startdepth are omitted.
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120
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121 If cutfunc is provided, it will be used to cut the traversal of the DAG.
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122 When cutfunc(X) returns True, the DAG traversal stops - revision X and
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123 X's ancestors in the traversal path will be skipped. This could be an
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124 optimization sometimes.
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125
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126 Note: if Y is an ancestor of X, cutfunc(X) returning True does not
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127 necessarily mean Y will also be cut. Usually cutfunc(Y) also wants to
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128 return True in this case. For example,
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129
c6c8a52e28c9 revset: optimize "draft() & ::x" pattern
Jun Wu <quark@fb.com>
parents: 33284
diff changeset
130 D # revancestors(repo, D, cutfunc=lambda rev: rev == B)
c6c8a52e28c9 revset: optimize "draft() & ::x" pattern
Jun Wu <quark@fb.com>
parents: 33284
diff changeset
131 |\ # will include "A", because the path D -> C -> A was not cut.
c6c8a52e28c9 revset: optimize "draft() & ::x" pattern
Jun Wu <quark@fb.com>
parents: 33284
diff changeset
132 B C # If "B" gets cut, "A" might want to be cut too.
c6c8a52e28c9 revset: optimize "draft() & ::x" pattern
Jun Wu <quark@fb.com>
parents: 33284
diff changeset
133 |/
c6c8a52e28c9 revset: optimize "draft() & ::x" pattern
Jun Wu <quark@fb.com>
parents: 33284
diff changeset
134 A
33018
272a44cac57e revset: add depth limit to ancestors()
Yuya Nishihara <yuya@tcha.org>
parents: 33017
diff changeset
135 """
34082
c6c8a52e28c9 revset: optimize "draft() & ::x" pattern
Jun Wu <quark@fb.com>
parents: 33284
diff changeset
136 gen = _genrevancestors(repo, revs, followfirst, startdepth, stopdepth,
c6c8a52e28c9 revset: optimize "draft() & ::x" pattern
Jun Wu <quark@fb.com>
parents: 33284
diff changeset
137 cutfunc)
33013
b9e2269aeff8 dagop: unnest inner generator of revancestors()
Yuya Nishihara <yuya@tcha.org>
parents: 32922
diff changeset
138 return generatorset(gen, iterasc=False)
16409
2cbd7dd0cc1f graphlog: fix --follow-first --rev combinations
Patrick Mezard <patrick@mezard.eu>
parents: 16402
diff changeset
139
33085
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
140 def _genrevdescendants(repo, revs, followfirst):
24306
6ddc86eedc3b style: kill ersatz if-else ternary operators
Jordi Guti?rrez Hermoso <jordigh@octave.org>
parents: 24219
diff changeset
141 if followfirst:
6ddc86eedc3b style: kill ersatz if-else ternary operators
Jordi Guti?rrez Hermoso <jordigh@octave.org>
parents: 24219
diff changeset
142 cut = 1
6ddc86eedc3b style: kill ersatz if-else ternary operators
Jordi Guti?rrez Hermoso <jordigh@octave.org>
parents: 24219
diff changeset
143 else:
6ddc86eedc3b style: kill ersatz if-else ternary operators
Jordi Guti?rrez Hermoso <jordigh@octave.org>
parents: 24219
diff changeset
144 cut = None
16409
2cbd7dd0cc1f graphlog: fix --follow-first --rev combinations
Patrick Mezard <patrick@mezard.eu>
parents: 16402
diff changeset
145
33085
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
146 cl = repo.changelog
33088
a76a64c78807 dagop: use smartset.min() in revdescendants() generator
Yuya Nishihara <yuya@tcha.org>
parents: 33087
diff changeset
147 first = revs.min()
33085
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
148 nullrev = node.nullrev
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
149 if first == nullrev:
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
150 # Are there nodes with a null first parent and a non-null
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
151 # second one? Maybe. Do we care? Probably not.
33087
d83b189aef83 dagop: change revdescendants() to include all root revisions
Yuya Nishihara <yuya@tcha.org>
parents: 33085
diff changeset
152 yield first
33085
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
153 for i in cl:
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
154 yield i
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
155 else:
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
156 seen = set(revs)
33087
d83b189aef83 dagop: change revdescendants() to include all root revisions
Yuya Nishihara <yuya@tcha.org>
parents: 33085
diff changeset
157 for i in cl.revs(first):
d83b189aef83 dagop: change revdescendants() to include all root revisions
Yuya Nishihara <yuya@tcha.org>
parents: 33085
diff changeset
158 if i in seen:
d83b189aef83 dagop: change revdescendants() to include all root revisions
Yuya Nishihara <yuya@tcha.org>
parents: 33085
diff changeset
159 yield i
d83b189aef83 dagop: change revdescendants() to include all root revisions
Yuya Nishihara <yuya@tcha.org>
parents: 33085
diff changeset
160 continue
33085
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
161 for x in cl.parentrevs(i)[:cut]:
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
162 if x != nullrev and x in seen:
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
163 seen.add(i)
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
164 yield i
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
165 break
20692
7af341082b76 revset: changed descendants revset to use lazy generators
Lucas Moscovicz <lmoscovicz@fb.com>
parents: 20691
diff changeset
166
33092
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
167 def _builddescendantsmap(repo, startrev, followfirst):
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
168 """Build map of 'rev -> child revs', offset from startrev"""
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
169 cl = repo.changelog
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
170 nullrev = node.nullrev
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
171 descmap = [[] for _rev in xrange(startrev, len(cl))]
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
172 for currev in cl.revs(startrev + 1):
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
173 p1rev, p2rev = cl.parentrevs(currev)
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
174 if p1rev >= startrev:
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
175 descmap[p1rev - startrev].append(currev)
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
176 if not followfirst and p2rev != nullrev and p2rev >= startrev:
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
177 descmap[p2rev - startrev].append(currev)
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
178 return descmap
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
179
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
180 def _genrevdescendantsofdepth(repo, revs, followfirst, startdepth, stopdepth):
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
181 startrev = revs.min()
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
182 descmap = _builddescendantsmap(repo, startrev, followfirst)
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
183 def pfunc(rev):
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
184 return descmap[rev - startrev]
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
185 return _walkrevtree(pfunc, revs, startdepth, stopdepth, reverse=False)
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
186
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
187 def revdescendants(repo, revs, followfirst, startdepth=None, stopdepth=None):
33087
d83b189aef83 dagop: change revdescendants() to include all root revisions
Yuya Nishihara <yuya@tcha.org>
parents: 33085
diff changeset
188 """Like revlog.descendants() but supports additional options, includes
33092
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
189 the given revs themselves, and returns a smartset
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
190
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
191 Scan ends at the stopdepth (exlusive) if specified. Revisions found
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
192 earlier than the startdepth are omitted.
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
193 """
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
194 if startdepth is None and stopdepth is None:
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
195 gen = _genrevdescendants(repo, revs, followfirst)
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
196 else:
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
197 gen = _genrevdescendantsofdepth(repo, revs, followfirst,
a53bfc2845f2 revset: add depth limit to descendants() (issue5374)
Yuya Nishihara <yuya@tcha.org>
parents: 33091
diff changeset
198 startdepth, stopdepth)
33085
b04cf7a6e0f3 dagop: unnest inner generator of revdescendants()
Yuya Nishihara <yuya@tcha.org>
parents: 33039
diff changeset
199 return generatorset(gen, iterasc=True)
16409
2cbd7dd0cc1f graphlog: fix --follow-first --rev combinations
Patrick Mezard <patrick@mezard.eu>
parents: 16402
diff changeset
200
26095
6eed95ca4c03 revset: mark reachablerootspure as private
Yuya Nishihara <yuya@tcha.org>
parents: 26094
diff changeset
201 def _reachablerootspure(repo, minroot, roots, heads, includepath):
26002
fd92bfbbe02d revset: rename revsbetween to reachableroots and add an argument
Laurent Charignon <lcharignon@fb.com>
parents: 26001
diff changeset
202 """return (heads(::<roots> and ::<heads>))
fd92bfbbe02d revset: rename revsbetween to reachableroots and add an argument
Laurent Charignon <lcharignon@fb.com>
parents: 26001
diff changeset
203
fd92bfbbe02d revset: rename revsbetween to reachableroots and add an argument
Laurent Charignon <lcharignon@fb.com>
parents: 26001
diff changeset
204 If includepath is True, return (<roots>::<heads>)."""
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
205 if not roots:
26094
df41c7be16d6 reachableroots: construct and sort baseset in revset module
Yuya Nishihara <yuya@tcha.org>
parents: 26093
diff changeset
206 return []
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
207 parentrevs = repo.changelog.parentrevs
26053
b68c9d232db6 reachableroots: use internal "revstates" array to test if rev is a root
Yuya Nishihara <yuya@tcha.org>
parents: 26006
diff changeset
208 roots = set(roots)
22487
e40bb83d0989 revset: stop using a baseset instead of a plain list in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22483
diff changeset
209 visit = list(heads)
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
210 reachable = set()
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
211 seen = {}
25566
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
212 # prefetch all the things! (because python is slow)
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
213 reached = reachable.add
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
214 dovisit = visit.append
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
215 nextvisit = visit.pop
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
216 # open-code the post-order traversal due to the tiny size of
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
217 # sys.getrecursionlimit()
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
218 while visit:
25566
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
219 rev = nextvisit()
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
220 if rev in roots:
25566
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
221 reached(rev)
26002
fd92bfbbe02d revset: rename revsbetween to reachableroots and add an argument
Laurent Charignon <lcharignon@fb.com>
parents: 26001
diff changeset
222 if not includepath:
fd92bfbbe02d revset: rename revsbetween to reachableroots and add an argument
Laurent Charignon <lcharignon@fb.com>
parents: 26001
diff changeset
223 continue
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
224 parents = parentrevs(rev)
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
225 seen[rev] = parents
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
226 for parent in parents:
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
227 if parent >= minroot and parent not in seen:
25566
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
228 dovisit(parent)
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
229 if not reachable:
22802
1fcd361efaf4 baseset: use default value instead of [] when possible
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22801
diff changeset
230 return baseset()
26002
fd92bfbbe02d revset: rename revsbetween to reachableroots and add an argument
Laurent Charignon <lcharignon@fb.com>
parents: 26001
diff changeset
231 if not includepath:
fd92bfbbe02d revset: rename revsbetween to reachableroots and add an argument
Laurent Charignon <lcharignon@fb.com>
parents: 26001
diff changeset
232 return reachable
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
233 for rev in sorted(seen):
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
234 for parent in seen[rev]:
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
235 if parent in reachable:
25566
15412bba5a68 revset: prefetch all attributes before loop in _revsbetween
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25554
diff changeset
236 reached(rev)
26091
60bbd4f9abd1 reachableroots: sort the smartset in the pure version too
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26060
diff changeset
237 return reachable
16862
b6efeb27e733 revset: introduce and use _revsbetween
Bryan O'Sullivan <bryano@fb.com>
parents: 16861
diff changeset
238
26006
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
239 def reachableroots(repo, roots, heads, includepath=False):
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
240 """return (heads(::<roots> and ::<heads>))
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
241
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
242 If includepath is True, return (<roots>::<heads>)."""
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
243 if not roots:
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
244 return baseset()
26093
204131131766 reachableroots: use smartset min
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26091
diff changeset
245 minroot = roots.min()
26053
b68c9d232db6 reachableroots: use internal "revstates" array to test if rev is a root
Yuya Nishihara <yuya@tcha.org>
parents: 26006
diff changeset
246 roots = list(roots)
26006
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
247 heads = list(heads)
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
248 try:
26094
df41c7be16d6 reachableroots: construct and sort baseset in revset module
Yuya Nishihara <yuya@tcha.org>
parents: 26093
diff changeset
249 revs = repo.changelog.reachableroots(minroot, heads, roots, includepath)
26006
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
250 except AttributeError:
26095
6eed95ca4c03 revset: mark reachablerootspure as private
Yuya Nishihara <yuya@tcha.org>
parents: 26094
diff changeset
251 revs = _reachablerootspure(repo, minroot, roots, heads, includepath)
26094
df41c7be16d6 reachableroots: construct and sort baseset in revset module
Yuya Nishihara <yuya@tcha.org>
parents: 26093
diff changeset
252 revs = baseset(revs)
df41c7be16d6 reachableroots: construct and sort baseset in revset module
Yuya Nishihara <yuya@tcha.org>
parents: 26093
diff changeset
253 revs.sort()
df41c7be16d6 reachableroots: construct and sort baseset in revset module
Yuya Nishihara <yuya@tcha.org>
parents: 26093
diff changeset
254 return revs
26006
1ffd97cbf9a2 reachableroots: default to the C implementation
Laurent Charignon <lcharignon@fb.com>
parents: 26002
diff changeset
255
32922
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
256 def _changesrange(fctx1, fctx2, linerange2, diffopts):
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
257 """Return `(diffinrange, linerange1)` where `diffinrange` is True
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Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
258 if diff from fctx2 to fctx1 has changes in linerange2 and
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
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parents: 32921
diff changeset
259 `linerange1` is the new line range for fctx1.
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parents: 32921
diff changeset
260 """
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parents: 32921
diff changeset
261 blocks = mdiff.allblocks(fctx1.data(), fctx2.data(), diffopts)
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
262 filteredblocks, linerange1 = mdiff.blocksinrange(blocks, linerange2)
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
263 diffinrange = any(stype == '!' for _, stype in filteredblocks)
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
264 return diffinrange, linerange1
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
265
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parents: 32921
diff changeset
266 def blockancestors(fctx, fromline, toline, followfirst=False):
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Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
267 """Yield ancestors of `fctx` with respect to the block of lines within
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
268 `fromline`-`toline` range.
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parents: 32921
diff changeset
269 """
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parents: 32921
diff changeset
270 diffopts = patch.diffopts(fctx._repo.ui)
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Yuya Nishihara <yuya@tcha.org>
parents: 32921
diff changeset
271 introrev = fctx.introrev()
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parents: 32921
diff changeset
272 if fctx.rev() != introrev:
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parents: 32921
diff changeset
273 fctx = fctx.filectx(fctx.filenode(), changeid=introrev)
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parents: 32921
diff changeset
274 visit = {(fctx.linkrev(), fctx.filenode()): (fctx, (fromline, toline))}
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parents: 32921
diff changeset
275 while visit:
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diff changeset
276 c, linerange2 = visit.pop(max(visit))
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parents: 32921
diff changeset
277 pl = c.parents()
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parents: 32921
diff changeset
278 if followfirst:
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diff changeset
279 pl = pl[:1]
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280 if not pl:
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281 # The block originates from the initial revision.
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diff changeset
282 yield c, linerange2
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diff changeset
283 continue
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284 inrange = False
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diff changeset
285 for p in pl:
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diff changeset
286 inrangep, linerange1 = _changesrange(p, c, linerange2, diffopts)
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diff changeset
287 inrange = inrange or inrangep
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diff changeset
288 if linerange1[0] == linerange1[1]:
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diff changeset
289 # Parent's linerange is empty, meaning that the block got
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diff changeset
290 # introduced in this revision; no need to go futher in this
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diff changeset
291 # branch.
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diff changeset
292 continue
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diff changeset
293 # Set _descendantrev with 'c' (a known descendant) so that, when
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parents: 32921
diff changeset
294 # _adjustlinkrev is called for 'p', it receives this descendant
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diff changeset
295 # (as srcrev) instead possibly topmost introrev.
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diff changeset
296 p._descendantrev = c.rev()
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diff changeset
297 visit[p.linkrev(), p.filenode()] = p, linerange1
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diff changeset
298 if inrange:
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diff changeset
299 yield c, linerange2
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diff changeset
300
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diff changeset
301 def blockdescendants(fctx, fromline, toline):
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diff changeset
302 """Yield descendants of `fctx` with respect to the block of lines within
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parents: 32921
diff changeset
303 `fromline`-`toline` range.
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diff changeset
304 """
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diff changeset
305 # First possibly yield 'fctx' if it has changes in range with respect to
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diff changeset
306 # its parents.
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diff changeset
307 try:
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diff changeset
308 c, linerange1 = next(blockancestors(fctx, fromline, toline))
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diff changeset
309 except StopIteration:
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diff changeset
310 pass
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diff changeset
311 else:
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diff changeset
312 if c == fctx:
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diff changeset
313 yield c, linerange1
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diff changeset
314
582080a4a812 dagop: move blockancestors() and blockdescendants() from context
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diff changeset
315 diffopts = patch.diffopts(fctx._repo.ui)
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diff changeset
316 fl = fctx.filelog()
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diff changeset
317 seen = {fctx.filerev(): (fctx, (fromline, toline))}
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parents: 32921
diff changeset
318 for i in fl.descendants([fctx.filerev()]):
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parents: 32921
diff changeset
319 c = fctx.filectx(i)
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diff changeset
320 inrange = False
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diff changeset
321 for x in fl.parentrevs(i):
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parents: 32921
diff changeset
322 try:
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diff changeset
323 p, linerange2 = seen[x]
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parents: 32921
diff changeset
324 except KeyError:
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parents: 32921
diff changeset
325 # nullrev or other branch
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parents: 32921
diff changeset
326 continue
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diff changeset
327 inrangep, linerange1 = _changesrange(c, p, linerange2, diffopts)
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parents: 32921
diff changeset
328 inrange = inrange or inrangep
33284
b2670290eab4 followlines: join merge parents line ranges in blockdescendants() (issue5595)
Denis Laxalde <denis.laxalde@logilab.fr>
parents: 33092
diff changeset
329 # If revision 'i' has been seen (it's a merge) and the line range
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Denis Laxalde <denis.laxalde@logilab.fr>
parents: 33092
diff changeset
330 # previously computed differs from the one we just got, we take the
b2670290eab4 followlines: join merge parents line ranges in blockdescendants() (issue5595)
Denis Laxalde <denis.laxalde@logilab.fr>
parents: 33092
diff changeset
331 # surrounding interval. This is conservative but avoids loosing
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Denis Laxalde <denis.laxalde@logilab.fr>
parents: 33092
diff changeset
332 # information.
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Denis Laxalde <denis.laxalde@logilab.fr>
parents: 33092
diff changeset
333 if i in seen and seen[i][1] != linerange1:
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Denis Laxalde <denis.laxalde@logilab.fr>
parents: 33092
diff changeset
334 lbs, ubs = zip(linerange1, seen[i][1])
b2670290eab4 followlines: join merge parents line ranges in blockdescendants() (issue5595)
Denis Laxalde <denis.laxalde@logilab.fr>
parents: 33092
diff changeset
335 linerange1 = min(lbs), max(ubs)
32922
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parents: 32921
diff changeset
336 seen[i] = c, linerange1
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parents: 32921
diff changeset
337 if inrange:
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parents: 32921
diff changeset
338 yield c, linerange1
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parents: 32921
diff changeset
339
32921
27932a76a88d dagop: split module hosting DAG-related algorithms from revset
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parents: 32903
diff changeset
340 def toposort(revs, parentsfunc, firstbranch=()):
29347
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parents: 29346
diff changeset
341 """Yield revisions from heads to roots one (topo) branch at a time.
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parents: 29346
diff changeset
342
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diff changeset
343 This function aims to be used by a graph generator that wishes to minimize
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344 the number of parallel branches and their interleaving.
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diff changeset
345
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diff changeset
346 Example iteration order (numbers show the "true" order in a changelog):
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diff changeset
347
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parents: 29346
diff changeset
348 o 4
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parents: 29346
diff changeset
349 |
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parents: 29346
diff changeset
350 o 1
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parents: 29346
diff changeset
351 |
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Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
352 | o 3
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diff changeset
353 | |
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diff changeset
354 | o 2
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diff changeset
355 |/
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parents: 29346
diff changeset
356 o 0
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diff changeset
357
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diff changeset
358 Note that the ancestors of merges are understood by the current
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diff changeset
359 algorithm to be on the same branch. This means no reordering will
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diff changeset
360 occur behind a merge.
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diff changeset
361 """
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diff changeset
362
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parents: 29346
diff changeset
363 ### Quick summary of the algorithm
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diff changeset
364 #
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parents: 29346
diff changeset
365 # This function is based around a "retention" principle. We keep revisions
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Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
366 # in memory until we are ready to emit a whole branch that immediately
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diff changeset
367 # "merges" into an existing one. This reduces the number of parallel
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Martijn Pieters <mjpieters@fb.com>
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diff changeset
368 # branches with interleaved revisions.
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diff changeset
369 #
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diff changeset
370 # During iteration revs are split into two groups:
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diff changeset
371 # A) revision already emitted
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diff changeset
372 # B) revision in "retention". They are stored as different subgroups.
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diff changeset
373 #
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diff changeset
374 # for each REV, we do the following logic:
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diff changeset
375 #
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parents: 29346
diff changeset
376 # 1) if REV is a parent of (A), we will emit it. If there is a
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Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
377 # retention group ((B) above) that is blocked on REV being
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Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
378 # available, we emit all the revisions out of that retention
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diff changeset
379 # group first.
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diff changeset
380 #
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diff changeset
381 # 2) else, we'll search for a subgroup in (B) awaiting for REV to be
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Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
382 # available, if such subgroup exist, we add REV to it and the subgroup is
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Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
383 # now awaiting for REV.parents() to be available.
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diff changeset
384 #
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diff changeset
385 # 3) finally if no such group existed in (B), we create a new subgroup.
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parents: 29346
diff changeset
386 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
387 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
388 # To bootstrap the algorithm, we emit the tipmost revision (which
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
389 # puts it in group (A) from above).
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
390
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
391 revs.sort(reverse=True)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
392
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
393 # Set of parents of revision that have been emitted. They can be considered
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
394 # unblocked as the graph generator is already aware of them so there is no
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
395 # need to delay the revisions that reference them.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
396 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
397 # If someone wants to prioritize a branch over the others, pre-filling this
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
398 # set will force all other branches to wait until this branch is ready to be
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
399 # emitted.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
400 unblocked = set(firstbranch)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
401
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
402 # list of groups waiting to be displayed, each group is defined by:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
403 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
404 # (revs: lists of revs waiting to be displayed,
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
405 # blocked: set of that cannot be displayed before those in 'revs')
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
406 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
407 # The second value ('blocked') correspond to parents of any revision in the
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
408 # group ('revs') that is not itself contained in the group. The main idea
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
409 # of this algorithm is to delay as much as possible the emission of any
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
410 # revision. This means waiting for the moment we are about to display
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
411 # these parents to display the revs in a group.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
412 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
413 # This first implementation is smart until it encounters a merge: it will
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
414 # emit revs as soon as any parent is about to be emitted and can grow an
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
415 # arbitrary number of revs in 'blocked'. In practice this mean we properly
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
416 # retains new branches but gives up on any special ordering for ancestors
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
417 # of merges. The implementation can be improved to handle this better.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
418 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
419 # The first subgroup is special. It corresponds to all the revision that
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
420 # were already emitted. The 'revs' lists is expected to be empty and the
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
421 # 'blocked' set contains the parents revisions of already emitted revision.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
422 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
423 # You could pre-seed the <parents> set of groups[0] to a specific
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
424 # changesets to select what the first emitted branch should be.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
425 groups = [([], unblocked)]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
426 pendingheap = []
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
427 pendingset = set()
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
428
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
429 heapq.heapify(pendingheap)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
430 heappop = heapq.heappop
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
431 heappush = heapq.heappush
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
432 for currentrev in revs:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
433 # Heap works with smallest element, we want highest so we invert
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
434 if currentrev not in pendingset:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
435 heappush(pendingheap, -currentrev)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
436 pendingset.add(currentrev)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
437 # iterates on pending rev until after the current rev have been
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
438 # processed.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
439 rev = None
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
440 while rev != currentrev:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
441 rev = -heappop(pendingheap)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
442 pendingset.remove(rev)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
443
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
444 # Seek for a subgroup blocked, waiting for the current revision.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
445 matching = [i for i, g in enumerate(groups) if rev in g[1]]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
446
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
447 if matching:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
448 # The main idea is to gather together all sets that are blocked
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
449 # on the same revision.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
450 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
451 # Groups are merged when a common blocking ancestor is
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
452 # observed. For example, given two groups:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
453 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
454 # revs [5, 4] waiting for 1
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
455 # revs [3, 2] waiting for 1
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
456 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
457 # These two groups will be merged when we process
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
458 # 1. In theory, we could have merged the groups when
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
459 # we added 2 to the group it is now in (we could have
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
460 # noticed the groups were both blocked on 1 then), but
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
461 # the way it works now makes the algorithm simpler.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
462 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
463 # We also always keep the oldest subgroup first. We can
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
464 # probably improve the behavior by having the longest set
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
465 # first. That way, graph algorithms could minimise the length
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
466 # of parallel lines their drawing. This is currently not done.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
467 targetidx = matching.pop(0)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
468 trevs, tparents = groups[targetidx]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
469 for i in matching:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
470 gr = groups[i]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
471 trevs.extend(gr[0])
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
472 tparents |= gr[1]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
473 # delete all merged subgroups (except the one we kept)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
474 # (starting from the last subgroup for performance and
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
475 # sanity reasons)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
476 for i in reversed(matching):
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
477 del groups[i]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
478 else:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
479 # This is a new head. We create a new subgroup for it.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
480 targetidx = len(groups)
32331
bd872f64a8ba cleanup: use set literals
Martin von Zweigbergk <martinvonz@google.com>
parents: 32085
diff changeset
481 groups.append(([], {rev}))
29347
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
482
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
483 gr = groups[targetidx]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
484
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
485 # We now add the current nodes to this subgroups. This is done
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
486 # after the subgroup merging because all elements from a subgroup
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
487 # that relied on this rev must precede it.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
488 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
489 # we also update the <parents> set to include the parents of the
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
490 # new nodes.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
491 if rev == currentrev: # only display stuff in rev
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
492 gr[0].append(rev)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
493 gr[1].remove(rev)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
494 parents = [p for p in parentsfunc(rev) if p > node.nullrev]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
495 gr[1].update(parents)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
496 for p in parents:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
497 if p not in pendingset:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
498 pendingset.add(p)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
499 heappush(pendingheap, -p)
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
500
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
501 # Look for a subgroup to display
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
502 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
503 # When unblocked is empty (if clause), we were not waiting for any
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
504 # revisions during the first iteration (if no priority was given) or
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
505 # if we emitted a whole disconnected set of the graph (reached a
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
506 # root). In that case we arbitrarily take the oldest known
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
507 # subgroup. The heuristic could probably be better.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
508 #
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
509 # Otherwise (elif clause) if the subgroup is blocked on
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
510 # a revision we just emitted, we can safely emit it as
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
511 # well.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
512 if not unblocked:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
513 if len(groups) > 1: # display other subset
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
514 targetidx = 1
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
515 gr = groups[1]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
516 elif not gr[1] & unblocked:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
517 gr = None
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
518
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
519 if gr is not None:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
520 # update the set of awaited revisions with the one from the
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
521 # subgroup
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
522 unblocked |= gr[1]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
523 # output all revisions in the subgroup
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
524 for r in gr[0]:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
525 yield r
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
526 # delete the subgroup that you just output
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
527 # unless it is groups[0] in which case you just empty it.
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
528 if targetidx:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
529 del groups[targetidx]
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
530 else:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
531 gr[0][:] = []
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
532 # Check if we have some subgroup waiting for revisions we are not going to
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
533 # iterate over
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
534 for g in groups:
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Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
535 for r in g[0]:
98535ad46fc0 revset: move groupbranchiter over from graphmod
Martijn Pieters <mjpieters@fb.com>
parents: 29346
diff changeset
536 yield r