annotate mercurial/dagutil.py @ 17754:19e9bf7c0927

notify: support revset selection for subscriptions A repo pattern for any notify configuration contains a glob matching the path to the repo. Additionally, it may now contain a revset spec, separated from the glob by '#'. Example: [reposubs] */widgets#branch(release) = qa-team@example.com This sends to ``qa-team@example.com`` whenever a changeset on the ``release`` branch triggers a notification in any repository ending in ``widgets``. This patch was completely done by David Champion <dgc@uchicago.edu> with me making tiny changes to his tests.
author Michal Sznajder <michalsznajder@gmail.com>
date Mon, 13 Aug 2012 22:42:10 +0200
parents e34106fa0dc3
children 37e2bd560805
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1 # dagutil.py - dag utilities for mercurial
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2 #
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3 # Copyright 2010 Benoit Boissinot <bboissin@gmail.com>
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4 # and Peter Arrenbrecht <peter@arrenbrecht.ch>
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2 or any later version.
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8
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9 from node import nullrev
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10 from i18n import _
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11
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12
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13 class basedag(object):
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14 '''generic interface for DAGs
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15
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16 terms:
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17 "ix" (short for index) identifies a nodes internally,
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18 "id" identifies one externally.
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19
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20 All params are ixs unless explicitly suffixed otherwise.
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21 Pluralized params are lists or sets.
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22 '''
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23
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24 def __init__(self):
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25 self._inverse = None
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26
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27 def nodeset(self):
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28 '''set of all node idxs'''
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29 raise NotImplementedError
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30
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31 def heads(self):
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32 '''list of head ixs'''
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33 raise NotImplementedError
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34
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35 def parents(self, ix):
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36 '''list of parents ixs of ix'''
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37 raise NotImplementedError
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38
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39 def inverse(self):
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40 '''inverse DAG, where parents becomes children, etc.'''
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41 raise NotImplementedError
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42
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43 def ancestorset(self, starts, stops=None):
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44 '''
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45 set of all ancestors of starts (incl), but stop walk at stops (excl)
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46 '''
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47 raise NotImplementedError
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48
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49 def descendantset(self, starts, stops=None):
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50 '''
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51 set of all descendants of starts (incl), but stop walk at stops (excl)
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52 '''
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53 return self.inverse().ancestorset(starts, stops)
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54
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55 def headsetofconnecteds(self, ixs):
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56 '''
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57 subset of connected list of ixs so that no node has a descendant in it
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58
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59 By "connected list" we mean that if an ancestor and a descendant are in
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60 the list, then so is at least one path connecting them.
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61 '''
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62 raise NotImplementedError
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63
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64 def externalize(self, ix):
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65 '''return a list of (or set if given a set) of node ids'''
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66 return self._externalize(ix)
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67
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68 def externalizeall(self, ixs):
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69 '''return a list of (or set if given a set) of node ids'''
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70 ids = self._externalizeall(ixs)
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71 if isinstance(ixs, set):
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72 return set(ids)
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73 return list(ids)
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74
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75 def internalize(self, id):
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76 '''return a list of (or set if given a set) of node ixs'''
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77 return self._internalize(id)
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78
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79 def internalizeall(self, ids, filterunknown=False):
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80 '''return a list of (or set if given a set) of node ids'''
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81 ixs = self._internalizeall(ids, filterunknown)
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82 if isinstance(ids, set):
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83 return set(ixs)
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84 return list(ixs)
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85
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86
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87 class genericdag(basedag):
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88 '''generic implementations for DAGs'''
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89
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90 def ancestorset(self, starts, stops=None):
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91 stops = stops and set(stops) or set()
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92 seen = set()
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93 pending = list(starts)
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94 while pending:
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95 n = pending.pop()
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96 if n not in seen and n not in stops:
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97 seen.add(n)
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98 pending.extend(self.parents(n))
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99 return seen
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100
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101 def headsetofconnecteds(self, ixs):
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102 hds = set(ixs)
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103 if not hds:
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104 return hds
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105 for n in ixs:
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106 for p in self.parents(n):
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107 hds.discard(p)
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108 assert hds
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109 return hds
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110
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111
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112 class revlogbaseddag(basedag):
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113 '''generic dag interface to a revlog'''
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114
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115 def __init__(self, revlog, nodeset):
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116 basedag.__init__(self)
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117 self._revlog = revlog
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118 self._heads = None
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119 self._nodeset = nodeset
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120
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121 def nodeset(self):
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122 return self._nodeset
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123
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124 def heads(self):
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125 if self._heads is None:
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126 self._heads = self._getheads()
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127 return self._heads
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128
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129 def _externalize(self, ix):
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130 return self._revlog.index[ix][7]
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131 def _externalizeall(self, ixs):
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132 idx = self._revlog.index
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133 return [idx[i][7] for i in ixs]
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134
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135 def _internalize(self, id):
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136 ix = self._revlog.rev(id)
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137 if ix == nullrev:
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138 raise LookupError(id, self._revlog.indexfile, _('nullid'))
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139 return ix
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140 def _internalizeall(self, ids, filterunknown):
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141 rl = self._revlog
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142 if filterunknown:
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143 return [r for r in map(rl.nodemap.get, ids)
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144 if r is not None and r != nullrev]
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145 return map(self._internalize, ids)
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146
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147
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148 class revlogdag(revlogbaseddag):
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149 '''dag interface to a revlog'''
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150
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151 def __init__(self, revlog):
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152 revlogbaseddag.__init__(self, revlog, set(xrange(len(revlog))))
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153
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154 def _getheads(self):
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155 return [r for r in self._revlog.headrevs() if r != nullrev]
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parents:
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156
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157 def parents(self, ix):
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158 rlog = self._revlog
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159 idx = rlog.index
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parents:
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160 revdata = idx[ix]
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161 prev = revdata[5]
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parents:
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162 if prev != nullrev:
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parents:
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163 prev2 = revdata[6]
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parents:
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164 if prev2 == nullrev:
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165 return [prev]
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parents:
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166 return [prev, prev2]
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parents:
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167 prev2 = revdata[6]
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parents:
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168 if prev2 != nullrev:
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parents:
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169 return [prev2]
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170 return []
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171
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172 def inverse(self):
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parents:
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173 if self._inverse is None:
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174 self._inverse = inverserevlogdag(self)
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175 return self._inverse
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176
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177 def ancestorset(self, starts, stops=None):
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178 rlog = self._revlog
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179 idx = rlog.index
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180 stops = stops and set(stops) or set()
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181 seen = set()
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182 pending = list(starts)
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parents:
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183 while pending:
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parents:
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184 rev = pending.pop()
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parents:
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185 if rev not in seen and rev not in stops:
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186 seen.add(rev)
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187 revdata = idx[rev]
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188 for i in [5, 6]:
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parents:
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189 prev = revdata[i]
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parents:
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190 if prev != nullrev:
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parents:
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191 pending.append(prev)
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192 return seen
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193
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194 def headsetofconnecteds(self, ixs):
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195 if not ixs:
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196 return set()
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parents:
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197 rlog = self._revlog
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parents:
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198 idx = rlog.index
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parents:
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199 headrevs = set(ixs)
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parents:
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200 for rev in ixs:
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parents:
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201 revdata = idx[rev]
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parents:
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202 for i in [5, 6]:
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parents:
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203 prev = revdata[i]
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parents:
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204 if prev != nullrev:
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parents:
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205 headrevs.discard(prev)
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parents:
diff changeset
206 assert headrevs
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parents:
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207 return headrevs
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parents:
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208
14364
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parents: 14206
diff changeset
209 def linearize(self, ixs):
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210 '''linearize and topologically sort a list of revisions
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211
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212 The linearization process tries to create long runs of revs where
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Sune Foldager <cryo@cyanite.org>
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213 a child rev comes immediately after its first parent. This is done by
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Sune Foldager <cryo@cyanite.org>
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diff changeset
214 visiting the heads of the given revs in inverse topological order,
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215 and for each visited rev, visiting its second parent, then its first
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diff changeset
216 parent, then adding the rev itself to the output list.
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217 '''
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218 sorted = []
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219 visit = list(self.headsetofconnecteds(ixs))
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diff changeset
220 visit.sort(reverse=True)
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221 finished = set()
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222
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223 while visit:
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224 cur = visit.pop()
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225 if cur < 0:
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226 cur = -cur - 1
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227 if cur not in finished:
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228 sorted.append(cur)
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229 finished.add(cur)
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230 else:
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231 visit.append(-cur - 1)
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232 visit += [p for p in self.parents(cur)
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parents: 14206
diff changeset
233 if p in ixs and p not in finished]
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diff changeset
234 assert len(sorted) == len(ixs)
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235 return sorted
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236
14164
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237
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parents:
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238 class inverserevlogdag(revlogbaseddag, genericdag):
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parents:
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239 '''inverse of an existing revlog dag; see revlogdag.inverse()'''
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parents:
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240
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241 def __init__(self, orig):
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parents:
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242 revlogbaseddag.__init__(self, orig._revlog, orig._nodeset)
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parents:
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243 self._orig = orig
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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244 self._children = {}
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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245 self._roots = []
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parents:
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246 self._walkfrom = len(self._revlog) - 1
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parents:
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247
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parents:
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248 def _walkto(self, walkto):
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parents:
diff changeset
249 rev = self._walkfrom
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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250 cs = self._children
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
251 roots = self._roots
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
252 idx = self._revlog.index
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
253 while rev >= walkto:
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
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254 data = idx[rev]
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
255 isroot = True
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
256 for prev in [data[5], data[6]]: # parent revs
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
257 if prev != nullrev:
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
258 cs.setdefault(prev, []).append(rev)
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parents:
diff changeset
259 isroot = False
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parents:
diff changeset
260 if isroot:
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
261 roots.append(rev)
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
262 rev -= 1
15052
06c3667c259c dagutil: fix off-by-one in inverserevlogdag buildup
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 14634
diff changeset
263 self._walkfrom = rev
14164
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parents:
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264
cb98fed52495 discovery: add new set-based discovery
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
265 def _getheads(self):
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
266 self._walkto(nullrev)
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
267 return self._roots
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parents:
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268
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parents:
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269 def parents(self, ix):
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parents:
diff changeset
270 if ix is None:
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parents:
diff changeset
271 return []
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
272 if ix <= self._walkfrom:
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
273 self._walkto(ix)
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
274 return self._children.get(ix, [])
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
275
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
276 def inverse(self):
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
diff changeset
277 return self._orig