Mercurial > hg
annotate mercurial/smartset.py @ 37762:7269b87f817c
scmutil: teach the file prefetch hook to handle multiple commits
The remainder of the commands that need prefetch deal with multiple revisions.
I initially coded this as a separate hook, but then it needed a list of files
to handle `diff` and `grep`, so it didn't seem worth keeping them separate.
Not every matcher will emit bad file messages (some are built from a list of
files that are known to exist). But it seems better to filter this in one place
than to push this on either each caller or each hook implementation.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Sat, 14 Apr 2018 18:50:45 -0400 |
parents | b44fac3a49fb |
children | f3033692ccef |
rev | line source |
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1 # smartset.py - data structure for revision set |
11275 | 2 # |
3 # Copyright 2010 Matt Mackall <mpm@selenic.com> | |
4 # | |
5 # This software may be used and distributed according to the terms of the | |
6 # GNU General Public License version 2 or any later version. | |
7 | |
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8 from __future__ import absolute_import |
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9 |
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10 from . import ( |
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11 encoding, |
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12 error, |
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13 pycompat, |
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14 util, |
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15 ) |
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17 def _formatsetrepr(r): |
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18 """Format an optional printable representation of a set |
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19 |
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20 ======== ================================= |
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21 type(r) example |
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22 ======== ================================= |
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23 tuple ('<not %r>', other) |
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24 bytes '<branch closed>' |
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25 callable lambda: '<branch %r>' % sorted(b) |
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26 object other |
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27 ======== ================================= |
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28 """ |
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29 if r is None: |
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30 return '' |
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31 elif isinstance(r, tuple): |
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32 return r[0] % util.rapply(pycompat.maybebytestr, r[1:]) |
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33 elif isinstance(r, bytes): |
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34 return r |
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35 elif callable(r): |
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36 return r() |
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37 else: |
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38 return pycompat.byterepr(r) |
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39 |
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40 def _typename(o): |
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41 return pycompat.sysbytes(type(o).__name__).lstrip('_') |
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42 |
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43 class abstractsmartset(object): |
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44 |
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45 def __nonzero__(self): |
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46 """True if the smartset is not empty""" |
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47 raise NotImplementedError() |
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48 |
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49 __bool__ = __nonzero__ |
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50 |
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51 def __contains__(self, rev): |
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52 """provide fast membership testing""" |
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53 raise NotImplementedError() |
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54 |
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55 def __iter__(self): |
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56 """iterate the set in the order it is supposed to be iterated""" |
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57 raise NotImplementedError() |
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58 |
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59 # Attributes containing a function to perform a fast iteration in a given |
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60 # direction. A smartset can have none, one, or both defined. |
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61 # |
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62 # Default value is None instead of a function returning None to avoid |
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63 # initializing an iterator just for testing if a fast method exists. |
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64 fastasc = None |
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65 fastdesc = None |
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66 |
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67 def isascending(self): |
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68 """True if the set will iterate in ascending order""" |
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69 raise NotImplementedError() |
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70 |
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71 def isdescending(self): |
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72 """True if the set will iterate in descending order""" |
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73 raise NotImplementedError() |
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74 |
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75 def istopo(self): |
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76 """True if the set will iterate in topographical order""" |
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77 raise NotImplementedError() |
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78 |
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79 def min(self): |
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80 """return the minimum element in the set""" |
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81 if self.fastasc is None: |
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82 v = min(self) |
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83 else: |
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84 for v in self.fastasc(): |
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85 break |
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86 else: |
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87 raise ValueError('arg is an empty sequence') |
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88 self.min = lambda: v |
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89 return v |
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90 |
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91 def max(self): |
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92 """return the maximum element in the set""" |
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93 if self.fastdesc is None: |
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94 return max(self) |
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95 else: |
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96 for v in self.fastdesc(): |
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97 break |
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98 else: |
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99 raise ValueError('arg is an empty sequence') |
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100 self.max = lambda: v |
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101 return v |
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102 |
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103 def first(self): |
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104 """return the first element in the set (user iteration perspective) |
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105 |
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106 Return None if the set is empty""" |
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107 raise NotImplementedError() |
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108 |
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109 def last(self): |
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110 """return the last element in the set (user iteration perspective) |
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111 |
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112 Return None if the set is empty""" |
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113 raise NotImplementedError() |
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114 |
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115 def __len__(self): |
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116 """return the length of the smartsets |
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117 |
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118 This can be expensive on smartset that could be lazy otherwise.""" |
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119 raise NotImplementedError() |
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120 |
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121 def reverse(self): |
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122 """reverse the expected iteration order""" |
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123 raise NotImplementedError() |
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124 |
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125 def sort(self, reverse=False): |
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126 """get the set to iterate in an ascending or descending order""" |
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127 raise NotImplementedError() |
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128 |
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129 def __and__(self, other): |
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130 """Returns a new object with the intersection of the two collections. |
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131 |
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132 This is part of the mandatory API for smartset.""" |
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133 if isinstance(other, fullreposet): |
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134 return self |
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135 return self.filter(other.__contains__, condrepr=other, cache=False) |
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136 |
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137 def __add__(self, other): |
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138 """Returns a new object with the union of the two collections. |
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139 |
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140 This is part of the mandatory API for smartset.""" |
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141 return addset(self, other) |
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142 |
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143 def __sub__(self, other): |
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144 """Returns a new object with the substraction of the two collections. |
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145 |
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146 This is part of the mandatory API for smartset.""" |
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147 c = other.__contains__ |
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148 return self.filter(lambda r: not c(r), condrepr=('<not %r>', other), |
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149 cache=False) |
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150 |
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151 def filter(self, condition, condrepr=None, cache=True): |
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152 """Returns this smartset filtered by condition as a new smartset. |
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153 |
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154 `condition` is a callable which takes a revision number and returns a |
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155 boolean. Optional `condrepr` provides a printable representation of |
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156 the given `condition`. |
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157 |
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158 This is part of the mandatory API for smartset.""" |
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159 # builtin cannot be cached. but do not needs to |
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160 if cache and util.safehasattr(condition, 'func_code'): |
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161 condition = util.cachefunc(condition) |
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162 return filteredset(self, condition, condrepr) |
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163 |
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164 def slice(self, start, stop): |
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165 """Return new smartset that contains selected elements from this set""" |
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166 if start < 0 or stop < 0: |
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167 raise error.ProgrammingError('negative index not allowed') |
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168 return self._slice(start, stop) |
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169 |
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170 def _slice(self, start, stop): |
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171 # sub classes may override this. start and stop must not be negative, |
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172 # but start > stop is allowed, which should be an empty set. |
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173 ys = [] |
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174 it = iter(self) |
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175 for x in xrange(start): |
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176 y = next(it, None) |
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177 if y is None: |
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178 break |
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179 for x in xrange(stop - start): |
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180 y = next(it, None) |
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181 if y is None: |
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182 break |
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183 ys.append(y) |
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184 return baseset(ys, datarepr=('slice=%d:%d %r', start, stop, self)) |
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185 |
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186 class baseset(abstractsmartset): |
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187 """Basic data structure that represents a revset and contains the basic |
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188 operation that it should be able to perform. |
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189 |
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190 Every method in this class should be implemented by any smartset class. |
31019 | 191 |
192 This class could be constructed by an (unordered) set, or an (ordered) | |
193 list-like object. If a set is provided, it'll be sorted lazily. | |
194 | |
195 >>> x = [4, 0, 7, 6] | |
196 >>> y = [5, 6, 7, 3] | |
197 | |
198 Construct by a set: | |
199 >>> xs = baseset(set(x)) | |
200 >>> ys = baseset(set(y)) | |
201 >>> [list(i) for i in [xs + ys, xs & ys, xs - ys]] | |
202 [[0, 4, 6, 7, 3, 5], [6, 7], [0, 4]] | |
203 >>> [type(i).__name__ for i in [xs + ys, xs & ys, xs - ys]] | |
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204 ['addset', 'baseset', 'baseset'] |
31019 | 205 |
206 Construct by a list-like: | |
207 >>> xs = baseset(x) | |
208 >>> ys = baseset(i for i in y) | |
209 >>> [list(i) for i in [xs + ys, xs & ys, xs - ys]] | |
210 [[4, 0, 7, 6, 5, 3], [7, 6], [4, 0]] | |
211 >>> [type(i).__name__ for i in [xs + ys, xs & ys, xs - ys]] | |
212 ['addset', 'filteredset', 'filteredset'] | |
213 | |
214 Populate "_set" fields in the lists so set optimization may be used: | |
215 >>> [1 in xs, 3 in ys] | |
216 [False, True] | |
217 | |
218 Without sort(), results won't be changed: | |
219 >>> [list(i) for i in [xs + ys, xs & ys, xs - ys]] | |
220 [[4, 0, 7, 6, 5, 3], [7, 6], [4, 0]] | |
221 >>> [type(i).__name__ for i in [xs + ys, xs & ys, xs - ys]] | |
222 ['addset', 'filteredset', 'filteredset'] | |
223 | |
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224 With sort(), set optimization could be used: |
31019 | 225 >>> xs.sort(reverse=True) |
226 >>> [list(i) for i in [xs + ys, xs & ys, xs - ys]] | |
227 [[7, 6, 4, 0, 5, 3], [7, 6], [4, 0]] | |
228 >>> [type(i).__name__ for i in [xs + ys, xs & ys, xs - ys]] | |
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229 ['addset', 'baseset', 'baseset'] |
31019 | 230 |
231 >>> ys.sort() | |
232 >>> [list(i) for i in [xs + ys, xs & ys, xs - ys]] | |
233 [[7, 6, 4, 0, 3, 5], [7, 6], [4, 0]] | |
234 >>> [type(i).__name__ for i in [xs + ys, xs & ys, xs - ys]] | |
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235 ['addset', 'baseset', 'baseset'] |
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236 |
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237 istopo is preserved across set operations |
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238 >>> xs = baseset(set(x), istopo=True) |
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239 >>> rs = xs & ys |
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240 >>> type(rs).__name__ |
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241 'baseset' |
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242 >>> rs._istopo |
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243 True |
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244 """ |
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245 def __init__(self, data=(), datarepr=None, istopo=False): |
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246 """ |
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247 datarepr: a tuple of (format, obj, ...), a function or an object that |
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248 provides a printable representation of the given data. |
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249 """ |
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250 self._ascending = None |
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251 self._istopo = istopo |
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252 if isinstance(data, set): |
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253 # converting set to list has a cost, do it lazily |
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254 self._set = data |
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255 # set has no order we pick one for stability purpose |
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256 self._ascending = True |
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257 else: |
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258 if not isinstance(data, list): |
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259 data = list(data) |
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260 self._list = data |
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261 self._datarepr = datarepr |
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262 |
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263 @util.propertycache |
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264 def _set(self): |
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265 return set(self._list) |
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266 |
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267 @util.propertycache |
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268 def _asclist(self): |
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269 asclist = self._list[:] |
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270 asclist.sort() |
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271 return asclist |
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272 |
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273 @util.propertycache |
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274 def _list(self): |
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275 # _list is only lazily constructed if we have _set |
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276 assert r'_set' in self.__dict__ |
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277 return list(self._set) |
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278 |
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279 def __iter__(self): |
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280 if self._ascending is None: |
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281 return iter(self._list) |
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282 elif self._ascending: |
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283 return iter(self._asclist) |
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284 else: |
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285 return reversed(self._asclist) |
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286 |
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287 def fastasc(self): |
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288 return iter(self._asclist) |
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289 |
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290 def fastdesc(self): |
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291 return reversed(self._asclist) |
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292 |
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293 @util.propertycache |
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294 def __contains__(self): |
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295 return self._set.__contains__ |
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296 |
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297 def __nonzero__(self): |
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298 return bool(len(self)) |
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299 |
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300 __bool__ = __nonzero__ |
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301 |
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302 def sort(self, reverse=False): |
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303 self._ascending = not bool(reverse) |
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304 self._istopo = False |
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305 |
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306 def reverse(self): |
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307 if self._ascending is None: |
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308 self._list.reverse() |
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309 else: |
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310 self._ascending = not self._ascending |
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311 self._istopo = False |
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312 |
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313 def __len__(self): |
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314 if r'_list' in self.__dict__: |
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315 return len(self._list) |
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316 else: |
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317 return len(self._set) |
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318 |
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319 def isascending(self): |
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320 """Returns True if the collection is ascending order, False if not. |
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321 |
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322 This is part of the mandatory API for smartset.""" |
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323 if len(self) <= 1: |
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324 return True |
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325 return self._ascending is not None and self._ascending |
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326 |
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327 def isdescending(self): |
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328 """Returns True if the collection is descending order, False if not. |
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329 |
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330 This is part of the mandatory API for smartset.""" |
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331 if len(self) <= 1: |
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332 return True |
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333 return self._ascending is not None and not self._ascending |
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334 |
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335 def istopo(self): |
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336 """Is the collection is in topographical order or not. |
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337 |
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338 This is part of the mandatory API for smartset.""" |
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339 if len(self) <= 1: |
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340 return True |
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341 return self._istopo |
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342 |
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343 def first(self): |
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344 if self: |
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345 if self._ascending is None: |
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346 return self._list[0] |
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347 elif self._ascending: |
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348 return self._asclist[0] |
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349 else: |
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350 return self._asclist[-1] |
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351 return None |
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352 |
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353 def last(self): |
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354 if self: |
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355 if self._ascending is None: |
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356 return self._list[-1] |
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357 elif self._ascending: |
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358 return self._asclist[-1] |
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359 else: |
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360 return self._asclist[0] |
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361 return None |
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362 |
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363 def _fastsetop(self, other, op): |
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364 # try to use native set operations as fast paths |
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365 if (type(other) is baseset and r'_set' in other.__dict__ and r'_set' in |
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366 self.__dict__ and self._ascending is not None): |
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367 s = baseset(data=getattr(self._set, op)(other._set), |
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368 istopo=self._istopo) |
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369 s._ascending = self._ascending |
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370 else: |
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371 s = getattr(super(baseset, self), op)(other) |
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372 return s |
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373 |
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374 def __and__(self, other): |
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375 return self._fastsetop(other, '__and__') |
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376 |
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377 def __sub__(self, other): |
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378 return self._fastsetop(other, '__sub__') |
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379 |
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380 def _slice(self, start, stop): |
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381 # creating new list should be generally cheaper than iterating items |
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382 if self._ascending is None: |
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383 return baseset(self._list[start:stop], istopo=self._istopo) |
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384 |
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385 data = self._asclist |
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386 if not self._ascending: |
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387 start, stop = max(len(data) - stop, 0), max(len(data) - start, 0) |
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388 s = baseset(data[start:stop], istopo=self._istopo) |
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389 s._ascending = self._ascending |
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390 return s |
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391 |
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392 @encoding.strmethod |
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393 def __repr__(self): |
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394 d = {None: '', False: '-', True: '+'}[self._ascending] |
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395 s = _formatsetrepr(self._datarepr) |
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396 if not s: |
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397 l = self._list |
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398 # if _list has been built from a set, it might have a different |
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399 # order from one python implementation to another. |
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400 # We fallback to the sorted version for a stable output. |
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401 if self._ascending is not None: |
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402 l = self._asclist |
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403 s = pycompat.byterepr(l) |
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404 return '<%s%s %s>' % (_typename(self), d, s) |
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405 |
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406 class filteredset(abstractsmartset): |
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407 """Duck type for baseset class which iterates lazily over the revisions in |
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408 the subset and contains a function which tests for membership in the |
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409 revset |
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410 """ |
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411 def __init__(self, subset, condition=lambda x: True, condrepr=None): |
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412 """ |
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413 condition: a function that decide whether a revision in the subset |
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414 belongs to the revset or not. |
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415 condrepr: a tuple of (format, obj, ...), a function or an object that |
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416 provides a printable representation of the given condition. |
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417 """ |
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418 self._subset = subset |
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419 self._condition = condition |
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420 self._condrepr = condrepr |
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421 |
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422 def __contains__(self, x): |
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423 return x in self._subset and self._condition(x) |
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424 |
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425 def __iter__(self): |
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426 return self._iterfilter(self._subset) |
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427 |
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428 def _iterfilter(self, it): |
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429 cond = self._condition |
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430 for x in it: |
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431 if cond(x): |
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432 yield x |
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433 |
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434 @property |
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435 def fastasc(self): |
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436 it = self._subset.fastasc |
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437 if it is None: |
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438 return None |
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439 return lambda: self._iterfilter(it()) |
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440 |
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441 @property |
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442 def fastdesc(self): |
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443 it = self._subset.fastdesc |
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444 if it is None: |
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445 return None |
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446 return lambda: self._iterfilter(it()) |
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447 |
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448 def __nonzero__(self): |
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449 fast = None |
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450 candidates = [self.fastasc if self.isascending() else None, |
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451 self.fastdesc if self.isdescending() else None, |
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452 self.fastasc, |
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453 self.fastdesc] |
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454 for candidate in candidates: |
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455 if candidate is not None: |
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456 fast = candidate |
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457 break |
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458 |
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459 if fast is not None: |
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460 it = fast() |
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461 else: |
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462 it = self |
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463 |
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464 for r in it: |
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465 return True |
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466 return False |
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467 |
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468 __bool__ = __nonzero__ |
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469 |
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470 def __len__(self): |
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471 # Basic implementation to be changed in future patches. |
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472 # until this gets improved, we use generator expression |
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473 # here, since list comprehensions are free to call __len__ again |
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474 # causing infinite recursion |
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475 l = baseset(r for r in self) |
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476 return len(l) |
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477 |
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478 def sort(self, reverse=False): |
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479 self._subset.sort(reverse=reverse) |
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480 |
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481 def reverse(self): |
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482 self._subset.reverse() |
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483 |
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484 def isascending(self): |
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485 return self._subset.isascending() |
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486 |
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revset: added isascending and isdescending methods to smartset classes
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20724
diff
changeset
|
487 def isdescending(self): |
22862
9e5576f822cc
filteredset: drop explicit order management
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parents:
22861
diff
changeset
|
488 return self._subset.isdescending() |
20725
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revset: added isascending and isdescending methods to smartset classes
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20724
diff
changeset
|
489 |
29346
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
490 def istopo(self): |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
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diff
changeset
|
491 return self._subset.istopo() |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
492 |
22813
5a96df266b2b
filteredset: implement `first` and `last`
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22812
diff
changeset
|
493 def first(self): |
5a96df266b2b
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parents:
22812
diff
changeset
|
494 for x in self: |
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diff
changeset
|
495 return x |
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diff
changeset
|
496 return None |
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diff
changeset
|
497 |
5a96df266b2b
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diff
changeset
|
498 def last(self): |
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diff
changeset
|
499 it = None |
25648
9b9877d2b229
revset: rework 'filteredset.last'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25647
diff
changeset
|
500 if self.isascending(): |
22862
9e5576f822cc
filteredset: drop explicit order management
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diff
changeset
|
501 it = self.fastdesc |
25648
9b9877d2b229
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diff
changeset
|
502 elif self.isdescending(): |
9b9877d2b229
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diff
changeset
|
503 it = self.fastasc |
9b9877d2b229
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diff
changeset
|
504 if it is not None: |
9b9877d2b229
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diff
changeset
|
505 for x in it(): |
9b9877d2b229
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parents:
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diff
changeset
|
506 return x |
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diff
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|
507 return None #empty case |
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Pierre-Yves David <pierre-yves.david@fb.com>
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diff
changeset
|
508 else: |
9b9877d2b229
revset: rework 'filteredset.last'
Pierre-Yves David <pierre-yves.david@fb.com>
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diff
changeset
|
509 x = None |
9b9877d2b229
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25647
diff
changeset
|
510 for x in self: |
9b9877d2b229
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parents:
25647
diff
changeset
|
511 pass |
22813
5a96df266b2b
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diff
changeset
|
512 return x |
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Pierre-Yves David <pierre-yves.david@fb.com>
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diff
changeset
|
513 |
35901
f0827211eb1f
py3: build repr() of smartset as bytes then convert to str
Yuya Nishihara <yuya@tcha.org>
parents:
35838
diff
changeset
|
514 @encoding.strmethod |
24457
c5022f3579b9
revset: add __repr__ to all smartset classes
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
515 def __repr__(self): |
36265
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py3: factor out byterepr() which returns an asciified value on py3
Yuya Nishihara <yuya@tcha.org>
parents:
35904
diff
changeset
|
516 xs = [pycompat.byterepr(self._subset)] |
28423
0d79d91ba7e3
revset: add extra data to filteredset for better inspection
Yuya Nishihara <yuya@tcha.org>
parents:
28395
diff
changeset
|
517 s = _formatsetrepr(self._condrepr) |
0d79d91ba7e3
revset: add extra data to filteredset for better inspection
Yuya Nishihara <yuya@tcha.org>
parents:
28395
diff
changeset
|
518 if s: |
0d79d91ba7e3
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Yuya Nishihara <yuya@tcha.org>
parents:
28395
diff
changeset
|
519 xs.append(s) |
35901
f0827211eb1f
py3: build repr() of smartset as bytes then convert to str
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parents:
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diff
changeset
|
520 return '<%s %s>' % (_typename(self), ', '.join(xs)) |
24457
c5022f3579b9
revset: add __repr__ to all smartset classes
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parents:
24446
diff
changeset
|
521 |
25131
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
522 def _iterordered(ascending, iter1, iter2): |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
523 """produce an ordered iteration from two iterators with the same order |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
524 |
adfe4d9680bf
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parents:
25130
diff
changeset
|
525 The ascending is used to indicated the iteration direction. |
adfe4d9680bf
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parents:
25130
diff
changeset
|
526 """ |
adfe4d9680bf
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parents:
25130
diff
changeset
|
527 choice = max |
adfe4d9680bf
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diff
changeset
|
528 if ascending: |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
529 choice = min |
adfe4d9680bf
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parents:
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diff
changeset
|
530 |
adfe4d9680bf
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parents:
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diff
changeset
|
531 val1 = None |
adfe4d9680bf
revset: extract addset._iterordered to free function
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parents:
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diff
changeset
|
532 val2 = None |
adfe4d9680bf
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parents:
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diff
changeset
|
533 try: |
adfe4d9680bf
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parents:
25130
diff
changeset
|
534 # Consume both iterators in an ordered way until one is empty |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
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diff
changeset
|
535 while True: |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
536 if val1 is None: |
29216
ead25aa27a43
py3: convert to next() function
timeless <timeless@mozdev.org>
parents:
29215
diff
changeset
|
537 val1 = next(iter1) |
25131
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
538 if val2 is None: |
29216
ead25aa27a43
py3: convert to next() function
timeless <timeless@mozdev.org>
parents:
29215
diff
changeset
|
539 val2 = next(iter2) |
29215
f5983805574e
revset: rename variable to avoid shadowing with builtin next() function
timeless <timeless@mozdev.org>
parents:
29147
diff
changeset
|
540 n = choice(val1, val2) |
f5983805574e
revset: rename variable to avoid shadowing with builtin next() function
timeless <timeless@mozdev.org>
parents:
29147
diff
changeset
|
541 yield n |
f5983805574e
revset: rename variable to avoid shadowing with builtin next() function
timeless <timeless@mozdev.org>
parents:
29147
diff
changeset
|
542 if val1 == n: |
25131
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
543 val1 = None |
29215
f5983805574e
revset: rename variable to avoid shadowing with builtin next() function
timeless <timeless@mozdev.org>
parents:
29147
diff
changeset
|
544 if val2 == n: |
25131
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
545 val2 = None |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
546 except StopIteration: |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
547 # Flush any remaining values and consume the other one |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
548 it = iter2 |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
549 if val1 is not None: |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
550 yield val1 |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
551 it = iter1 |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
552 elif val2 is not None: |
adfe4d9680bf
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Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
553 # might have been equality and both are empty |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
554 yield val2 |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
555 for val in it: |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
556 yield val |
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
557 |
22793
ff6689b47e48
addset: drop the leading underscore from the class name
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22792
diff
changeset
|
558 class addset(abstractsmartset): |
20708
17c89e5a5627
revset: made addset a private class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20707
diff
changeset
|
559 """Represent the addition of two sets |
17c89e5a5627
revset: made addset a private class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20707
diff
changeset
|
560 |
17c89e5a5627
revset: made addset a private class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20707
diff
changeset
|
561 Wrapper structure for lazily adding two structures without losing much |
20694
621c94378d0d
revset: added addset class with its basic methods
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20693
diff
changeset
|
562 performance on the __contains__ method |
20708
17c89e5a5627
revset: made addset a private class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20707
diff
changeset
|
563 |
20712
c152e538b85b
revset: added ascending attribute to addset class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20711
diff
changeset
|
564 If the ascending attribute is set, that means the two structures are |
c152e538b85b
revset: added ascending attribute to addset class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20711
diff
changeset
|
565 ordered in either an ascending or descending way. Therefore, we can add |
21024
7731a2281cf0
spelling: fixes from spell checker
Mads Kiilerich <madski@unity3d.com>
parents:
20991
diff
changeset
|
566 them maintaining the order by iterating over both at the same time |
25024
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
567 |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
568 >>> xs = baseset([0, 3, 2]) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
569 >>> ys = baseset([5, 2, 4]) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
570 |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
571 >>> rs = addset(xs, ys) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
572 >>> bool(rs), 0 in rs, 1 in rs, 5 in rs, rs.first(), rs.last() |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
573 (True, True, False, True, 0, 4) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
574 >>> rs = addset(xs, baseset([])) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
575 >>> bool(rs), 0 in rs, 1 in rs, rs.first(), rs.last() |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
576 (True, True, False, 0, 2) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
577 >>> rs = addset(baseset([]), baseset([])) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
578 >>> bool(rs), 0 in rs, rs.first(), rs.last() |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
579 (False, False, None, None) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
580 |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
581 iterate unsorted: |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
582 >>> rs = addset(xs, ys) |
28717
c5f212c8ad78
pypy: fix doctests for pypy optimizations
Maciej Fijalkowski <fijall@gmail.com>
parents:
28708
diff
changeset
|
583 >>> # (use generator because pypy could call len()) |
c5f212c8ad78
pypy: fix doctests for pypy optimizations
Maciej Fijalkowski <fijall@gmail.com>
parents:
28708
diff
changeset
|
584 >>> list(x for x in rs) # without _genlist |
25024
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
585 [0, 3, 2, 5, 4] |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
586 >>> assert not rs._genlist |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
587 >>> len(rs) |
263bbed1833c
revset: test current behavior of addset class
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parents:
25023
diff
changeset
|
588 5 |
263bbed1833c
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parents:
25023
diff
changeset
|
589 >>> [x for x in rs] # with _genlist |
263bbed1833c
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Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
590 [0, 3, 2, 5, 4] |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
591 >>> assert rs._genlist |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
592 |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
593 iterate ascending: |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
594 >>> rs = addset(xs, ys, ascending=True) |
28717
c5f212c8ad78
pypy: fix doctests for pypy optimizations
Maciej Fijalkowski <fijall@gmail.com>
parents:
28708
diff
changeset
|
595 >>> # (use generator because pypy could call len()) |
c5f212c8ad78
pypy: fix doctests for pypy optimizations
Maciej Fijalkowski <fijall@gmail.com>
parents:
28708
diff
changeset
|
596 >>> list(x for x in rs), list(x for x in rs.fastasc()) # without _asclist |
25024
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
597 ([0, 2, 3, 4, 5], [0, 2, 3, 4, 5]) |
263bbed1833c
revset: test current behavior of addset class
Yuya Nishihara <yuya@tcha.org>
parents:
25023
diff
changeset
|
598 >>> assert not rs._asclist |
25115
5548f558db3d
revset: fix iteration over ordered addset composed of non-ordered operands
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25105
diff
changeset
|
599 >>> len(rs) |
5548f558db3d
revset: fix iteration over ordered addset composed of non-ordered operands
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25105
diff
changeset
|
600 5 |
5548f558db3d
revset: fix iteration over ordered addset composed of non-ordered operands
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25105
diff
changeset
|
601 >>> [x for x in rs], [x for x in rs.fastasc()] |
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602 ([0, 2, 3, 4, 5], [0, 2, 3, 4, 5]) |
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603 >>> assert rs._asclist |
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604 |
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605 iterate descending: |
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606 >>> rs = addset(xs, ys, ascending=False) |
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607 >>> # (use generator because pypy could call len()) |
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608 >>> list(x for x in rs), list(x for x in rs.fastdesc()) # without _asclist |
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609 ([5, 4, 3, 2, 0], [5, 4, 3, 2, 0]) |
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610 >>> assert not rs._asclist |
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611 >>> len(rs) |
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612 5 |
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613 >>> [x for x in rs], [x for x in rs.fastdesc()] |
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614 ([5, 4, 3, 2, 0], [5, 4, 3, 2, 0]) |
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615 >>> assert rs._asclist |
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616 |
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617 iterate ascending without fastasc: |
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618 >>> rs = addset(xs, generatorset(ys), ascending=True) |
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619 >>> assert rs.fastasc is None |
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620 >>> [x for x in rs] |
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621 [0, 2, 3, 4, 5] |
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622 |
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623 iterate descending without fastdesc: |
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624 >>> rs = addset(generatorset(xs), ys, ascending=False) |
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625 >>> assert rs.fastdesc is None |
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626 >>> [x for x in rs] |
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627 [5, 4, 3, 2, 0] |
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628 """ |
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629 def __init__(self, revs1, revs2, ascending=None): |
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630 self._r1 = revs1 |
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631 self._r2 = revs2 |
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632 self._iter = None |
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633 self._ascending = ascending |
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634 self._genlist = None |
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635 self._asclist = None |
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636 |
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637 def __len__(self): |
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638 return len(self._list) |
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639 |
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640 def __nonzero__(self): |
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641 return bool(self._r1) or bool(self._r2) |
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642 |
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643 __bool__ = __nonzero__ |
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644 |
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645 @util.propertycache |
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646 def _list(self): |
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647 if not self._genlist: |
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648 self._genlist = baseset(iter(self)) |
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649 return self._genlist |
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650 |
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651 def __iter__(self): |
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652 """Iterate over both collections without repeating elements |
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653 |
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654 If the ascending attribute is not set, iterate over the first one and |
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655 then over the second one checking for membership on the first one so we |
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656 dont yield any duplicates. |
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657 |
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658 If the ascending attribute is set, iterate over both collections at the |
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659 same time, yielding only one value at a time in the given order. |
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660 """ |
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661 if self._ascending is None: |
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662 if self._genlist: |
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663 return iter(self._genlist) |
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664 def arbitraryordergen(): |
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665 for r in self._r1: |
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666 yield r |
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667 inr1 = self._r1.__contains__ |
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668 for r in self._r2: |
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669 if not inr1(r): |
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670 yield r |
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671 return arbitraryordergen() |
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672 # try to use our own fast iterator if it exists |
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673 self._trysetasclist() |
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674 if self._ascending: |
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675 attr = 'fastasc' |
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676 else: |
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677 attr = 'fastdesc' |
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678 it = getattr(self, attr) |
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679 if it is not None: |
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680 return it() |
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681 # maybe half of the component supports fast |
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682 # get iterator for _r1 |
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683 iter1 = getattr(self._r1, attr) |
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684 if iter1 is None: |
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685 # let's avoid side effect (not sure it matters) |
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686 iter1 = iter(sorted(self._r1, reverse=not self._ascending)) |
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687 else: |
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688 iter1 = iter1() |
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689 # get iterator for _r2 |
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690 iter2 = getattr(self._r2, attr) |
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691 if iter2 is None: |
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692 # let's avoid side effect (not sure it matters) |
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693 iter2 = iter(sorted(self._r2, reverse=not self._ascending)) |
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694 else: |
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695 iter2 = iter2() |
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696 return _iterordered(self._ascending, iter1, iter2) |
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697 |
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698 def _trysetasclist(self): |
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699 """populate the _asclist attribute if possible and necessary""" |
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700 if self._genlist is not None and self._asclist is None: |
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701 self._asclist = sorted(self._genlist) |
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702 |
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703 @property |
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704 def fastasc(self): |
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705 self._trysetasclist() |
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706 if self._asclist is not None: |
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707 return self._asclist.__iter__ |
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708 iter1 = self._r1.fastasc |
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709 iter2 = self._r2.fastasc |
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22741
diff
changeset
|
710 if None in (iter1, iter2): |
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
711 return None |
25131
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
712 return lambda: _iterordered(True, iter1(), iter2()) |
22742
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
713 |
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
714 @property |
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
715 def fastdesc(self): |
22859
513c0ba61db8
addset: do lazy sorting
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22857
diff
changeset
|
716 self._trysetasclist() |
513c0ba61db8
addset: do lazy sorting
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22857
diff
changeset
|
717 if self._asclist is not None: |
513c0ba61db8
addset: do lazy sorting
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22857
diff
changeset
|
718 return self._asclist.__reversed__ |
22742
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
719 iter1 = self._r1.fastdesc |
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
720 iter2 = self._r2.fastdesc |
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
721 if None in (iter1, iter2): |
6bbc26adcc6a
addset: offer a fastasc and fastdesc methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22741
diff
changeset
|
722 return None |
25131
adfe4d9680bf
revset: extract addset._iterordered to free function
Yuya Nishihara <yuya@tcha.org>
parents:
25130
diff
changeset
|
723 return lambda: _iterordered(False, iter1(), iter2()) |
22741
ef2c1ea8fb2c
addset: split simple and ordered iteration
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22740
diff
changeset
|
724 |
20694
621c94378d0d
revset: added addset class with its basic methods
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20693
diff
changeset
|
725 def __contains__(self, x): |
621c94378d0d
revset: added addset class with its basic methods
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20693
diff
changeset
|
726 return x in self._r1 or x in self._r2 |
621c94378d0d
revset: added addset class with its basic methods
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20693
diff
changeset
|
727 |
20724
e9a64b3f2925
revset: added sort method in addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20723
diff
changeset
|
728 def sort(self, reverse=False): |
e9a64b3f2925
revset: added sort method in addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20723
diff
changeset
|
729 """Sort the added set |
e9a64b3f2925
revset: added sort method in addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20723
diff
changeset
|
730 |
e9a64b3f2925
revset: added sort method in addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20723
diff
changeset
|
731 For this we use the cached list with all the generated values and if we |
e9a64b3f2925
revset: added sort method in addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20723
diff
changeset
|
732 know they are ascending or descending we can sort them in a smart way. |
e9a64b3f2925
revset: added sort method in addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20723
diff
changeset
|
733 """ |
22859
513c0ba61db8
addset: do lazy sorting
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22857
diff
changeset
|
734 self._ascending = not reverse |
20724
e9a64b3f2925
revset: added sort method in addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20723
diff
changeset
|
735 |
20733
adf4ec7e6f60
revset: added isascending and isdescending methods to _addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20732
diff
changeset
|
736 def isascending(self): |
adf4ec7e6f60
revset: added isascending and isdescending methods to _addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20732
diff
changeset
|
737 return self._ascending is not None and self._ascending |
adf4ec7e6f60
revset: added isascending and isdescending methods to _addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20732
diff
changeset
|
738 |
adf4ec7e6f60
revset: added isascending and isdescending methods to _addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20732
diff
changeset
|
739 def isdescending(self): |
adf4ec7e6f60
revset: added isascending and isdescending methods to _addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20732
diff
changeset
|
740 return self._ascending is not None and not self._ascending |
adf4ec7e6f60
revset: added isascending and isdescending methods to _addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20732
diff
changeset
|
741 |
29346
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
742 def istopo(self): |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
743 # not worth the trouble asserting if the two sets combined are still |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
744 # in topographical order. Use the sort() predicate to explicitly sort |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
745 # again instead. |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
746 return False |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
747 |
20723
fb9852c46a42
revset: added reverse method to addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20722
diff
changeset
|
748 def reverse(self): |
22859
513c0ba61db8
addset: do lazy sorting
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22857
diff
changeset
|
749 if self._ascending is None: |
513c0ba61db8
addset: do lazy sorting
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22857
diff
changeset
|
750 self._list.reverse() |
513c0ba61db8
addset: do lazy sorting
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22857
diff
changeset
|
751 else: |
20723
fb9852c46a42
revset: added reverse method to addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20722
diff
changeset
|
752 self._ascending = not self._ascending |
fb9852c46a42
revset: added reverse method to addset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20722
diff
changeset
|
753 |
22810
7f97cb12782f
addset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22809
diff
changeset
|
754 def first(self): |
23127
7361d8244efb
addset: fix `first` and `last` on sorted addset (issue4426)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23115
diff
changeset
|
755 for x in self: |
7361d8244efb
addset: fix `first` and `last` on sorted addset (issue4426)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23115
diff
changeset
|
756 return x |
22810
7f97cb12782f
addset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22809
diff
changeset
|
757 return None |
7f97cb12782f
addset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22809
diff
changeset
|
758 |
7f97cb12782f
addset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22809
diff
changeset
|
759 def last(self): |
23127
7361d8244efb
addset: fix `first` and `last` on sorted addset (issue4426)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23115
diff
changeset
|
760 self.reverse() |
7361d8244efb
addset: fix `first` and `last` on sorted addset (issue4426)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23115
diff
changeset
|
761 val = self.first() |
7361d8244efb
addset: fix `first` and `last` on sorted addset (issue4426)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23115
diff
changeset
|
762 self.reverse() |
7361d8244efb
addset: fix `first` and `last` on sorted addset (issue4426)
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
23115
diff
changeset
|
763 return val |
22810
7f97cb12782f
addset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22809
diff
changeset
|
764 |
35901
f0827211eb1f
py3: build repr() of smartset as bytes then convert to str
Yuya Nishihara <yuya@tcha.org>
parents:
35838
diff
changeset
|
765 @encoding.strmethod |
24457
c5022f3579b9
revset: add __repr__ to all smartset classes
Yuya Nishihara <yuya@tcha.org>
parents:
24446
diff
changeset
|
766 def __repr__(self): |
c5022f3579b9
revset: add __repr__ to all smartset classes
Yuya Nishihara <yuya@tcha.org>
parents:
24446
diff
changeset
|
767 d = {None: '', False: '-', True: '+'}[self._ascending] |
35901
f0827211eb1f
py3: build repr() of smartset as bytes then convert to str
Yuya Nishihara <yuya@tcha.org>
parents:
35838
diff
changeset
|
768 return '<%s%s %r, %r>' % (_typename(self), d, self._r1, self._r2) |
24457
c5022f3579b9
revset: add __repr__ to all smartset classes
Yuya Nishihara <yuya@tcha.org>
parents:
24446
diff
changeset
|
769 |
22795
c21342159fad
generatorset: drop the leading underscore in the class name
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22794
diff
changeset
|
770 class generatorset(abstractsmartset): |
20705
9cc2249a9461
revset: made generatorset a private class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20703
diff
changeset
|
771 """Wrap a generator for lazy iteration |
9cc2249a9461
revset: made generatorset a private class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20703
diff
changeset
|
772 |
9cc2249a9461
revset: made generatorset a private class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20703
diff
changeset
|
773 Wrapper structure for generators that provides lazy membership and can |
20540
fa16c710a3d8
revset: added cached generated list on generatorset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20538
diff
changeset
|
774 be iterated more than once. |
fa16c710a3d8
revset: added cached generated list on generatorset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20538
diff
changeset
|
775 When asked for membership it generates values until either it finds the |
fa16c710a3d8
revset: added cached generated list on generatorset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20538
diff
changeset
|
776 requested one or has gone through all the elements in the generator |
33109
247bae545061
smartset: fix generatorset.last() to not return the first element (issue5609)
Yuya Nishihara <yuya@tcha.org>
parents:
33072
diff
changeset
|
777 |
247bae545061
smartset: fix generatorset.last() to not return the first element (issue5609)
Yuya Nishihara <yuya@tcha.org>
parents:
33072
diff
changeset
|
778 >>> xs = generatorset([0, 1, 4], iterasc=True) |
247bae545061
smartset: fix generatorset.last() to not return the first element (issue5609)
Yuya Nishihara <yuya@tcha.org>
parents:
33072
diff
changeset
|
779 >>> assert xs.last() == xs.last() |
247bae545061
smartset: fix generatorset.last() to not return the first element (issue5609)
Yuya Nishihara <yuya@tcha.org>
parents:
33072
diff
changeset
|
780 >>> xs.last() # cached |
247bae545061
smartset: fix generatorset.last() to not return the first element (issue5609)
Yuya Nishihara <yuya@tcha.org>
parents:
33072
diff
changeset
|
781 4 |
20540
fa16c710a3d8
revset: added cached generated list on generatorset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20538
diff
changeset
|
782 """ |
35501
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
783 def __new__(cls, gen, iterasc=None): |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
784 if iterasc is None: |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
785 typ = cls |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
786 elif iterasc: |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
787 typ = _generatorsetasc |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
788 else: |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
789 typ = _generatorsetdesc |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
790 |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
791 return super(generatorset, cls).__new__(typ) |
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
Gregory Szorc <gregory.szorc@gmail.com>
parents:
34070
diff
changeset
|
792 |
22755
f9a825b593be
generatorset: make it possible to use gen as fastasc or fastdesc
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22754
diff
changeset
|
793 def __init__(self, gen, iterasc=None): |
20739
1b4f2399f3c4
revset: add documentation and comment for _generatorset
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20738
diff
changeset
|
794 """ |
1b4f2399f3c4
revset: add documentation and comment for _generatorset
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20738
diff
changeset
|
795 gen: a generator producing the values for the generatorset. |
1b4f2399f3c4
revset: add documentation and comment for _generatorset
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20738
diff
changeset
|
796 """ |
20536
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
797 self._gen = gen |
22798
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
798 self._asclist = None |
20536
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
799 self._cache = {} |
22796
43f664bf2e1e
generatorset: stop using a base as the _genlist
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22795
diff
changeset
|
800 self._genlist = [] |
20703
e07b1fd30805
revset: added sort methods to generatorsets
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20695
diff
changeset
|
801 self._finished = False |
22800
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
802 self._ascending = True |
20540
fa16c710a3d8
revset: added cached generated list on generatorset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20538
diff
changeset
|
803 |
22739
4ed47a1b2d24
generatorset: implement __nonzero__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22738
diff
changeset
|
804 def __nonzero__(self): |
24936
2aa94b6fe51c
revset: make generatorset.__nonzero__ lazy
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24932
diff
changeset
|
805 # Do not use 'for r in self' because it will enforce the iteration |
2aa94b6fe51c
revset: make generatorset.__nonzero__ lazy
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24932
diff
changeset
|
806 # order (default ascending), possibly unrolling a whole descending |
2aa94b6fe51c
revset: make generatorset.__nonzero__ lazy
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24932
diff
changeset
|
807 # iterator. |
2aa94b6fe51c
revset: make generatorset.__nonzero__ lazy
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24932
diff
changeset
|
808 if self._genlist: |
2aa94b6fe51c
revset: make generatorset.__nonzero__ lazy
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24932
diff
changeset
|
809 return True |
2aa94b6fe51c
revset: make generatorset.__nonzero__ lazy
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
24932
diff
changeset
|
810 for r in self._consumegen(): |
22739
4ed47a1b2d24
generatorset: implement __nonzero__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22738
diff
changeset
|
811 return True |
4ed47a1b2d24
generatorset: implement __nonzero__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22738
diff
changeset
|
812 return False |
4ed47a1b2d24
generatorset: implement __nonzero__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22738
diff
changeset
|
813 |
31476
413b44003462
py3: add __bool__ to every class defining __nonzero__
Gregory Szorc <gregory.szorc@gmail.com>
parents:
31446
diff
changeset
|
814 __bool__ = __nonzero__ |
413b44003462
py3: add __bool__ to every class defining __nonzero__
Gregory Szorc <gregory.szorc@gmail.com>
parents:
31446
diff
changeset
|
815 |
20536
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
816 def __contains__(self, x): |
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
817 if x in self._cache: |
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
818 return self._cache[x] |
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
819 |
20828
3210b7930899
revset: improve performance of _generatorset.__contains__ (issue 4201)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
20780
diff
changeset
|
820 # Use new values only, as existing values would be cached. |
3210b7930899
revset: improve performance of _generatorset.__contains__ (issue 4201)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
20780
diff
changeset
|
821 for l in self._consumegen(): |
20634
f2bb7ba59456
revset: changed generatorset code to remove unnecesary function call
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20613
diff
changeset
|
822 if l == x: |
f2bb7ba59456
revset: changed generatorset code to remove unnecesary function call
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20613
diff
changeset
|
823 return True |
20536
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
824 |
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
825 self._cache[x] = False |
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
826 return False |
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
827 |
532b114a6e02
revset: added generatorset class with cached __contains__ method
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20534
diff
changeset
|
828 def __iter__(self): |
22800
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
829 if self._ascending: |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
830 it = self.fastasc |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
831 else: |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
832 it = self.fastdesc |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
833 if it is not None: |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
834 return it() |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
835 # we need to consume the iterator |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
836 for x in self._consumegen(): |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
837 pass |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
838 # recall the same code |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
839 return iter(self) |
22797
61ecabeeadb3
generatorset: move iteration code into _iterator
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22796
diff
changeset
|
840 |
61ecabeeadb3
generatorset: move iteration code into _iterator
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22796
diff
changeset
|
841 def _iterator(self): |
20833
47d43e2323c5
revset: fix generatorset race condition
Durham Goode <durham@fb.com>
parents:
20829
diff
changeset
|
842 if self._finished: |
22670
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
843 return iter(self._genlist) |
20833
47d43e2323c5
revset: fix generatorset race condition
Durham Goode <durham@fb.com>
parents:
20829
diff
changeset
|
844 |
22494
14f6cebfcb8a
revset: document the choice made in __generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22487
diff
changeset
|
845 # We have to use this complex iteration strategy to allow multiple |
14f6cebfcb8a
revset: document the choice made in __generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22487
diff
changeset
|
846 # iterations at the same time. We need to be able to catch revision |
23139
e53f6b72a0e4
spelling: fixes from proofreading of spell checker issues
Mads Kiilerich <madski@unity3d.com>
parents:
23127
diff
changeset
|
847 # removed from _consumegen and added to genlist in another instance. |
22494
14f6cebfcb8a
revset: document the choice made in __generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22487
diff
changeset
|
848 # |
14f6cebfcb8a
revset: document the choice made in __generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22487
diff
changeset
|
849 # Getting rid of it would provide an about 15% speed up on this |
14f6cebfcb8a
revset: document the choice made in __generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22487
diff
changeset
|
850 # iteration. |
20833
47d43e2323c5
revset: fix generatorset race condition
Durham Goode <durham@fb.com>
parents:
20829
diff
changeset
|
851 genlist = self._genlist |
31446
9a94239e4f12
py3: use next() to obtain next item from inner generator of generatorset
Yuya Nishihara <yuya@tcha.org>
parents:
31127
diff
changeset
|
852 nextgen = self._consumegen() |
9a94239e4f12
py3: use next() to obtain next item from inner generator of generatorset
Yuya Nishihara <yuya@tcha.org>
parents:
31127
diff
changeset
|
853 _len, _next = len, next # cache global lookup |
22670
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
854 def gen(): |
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
855 i = 0 |
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
856 while True: |
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
857 if i < _len(genlist): |
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
858 yield genlist[i] |
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
859 else: |
32977
27ba0d8dc26c
py3: catch StopIteration from next() in generatorset
Martin von Zweigbergk <martinvonz@google.com>
parents:
32821
diff
changeset
|
860 try: |
27ba0d8dc26c
py3: catch StopIteration from next() in generatorset
Martin von Zweigbergk <martinvonz@google.com>
parents:
32821
diff
changeset
|
861 yield _next(nextgen) |
27ba0d8dc26c
py3: catch StopIteration from next() in generatorset
Martin von Zweigbergk <martinvonz@google.com>
parents:
32821
diff
changeset
|
862 except StopIteration: |
27ba0d8dc26c
py3: catch StopIteration from next() in generatorset
Martin von Zweigbergk <martinvonz@google.com>
parents:
32821
diff
changeset
|
863 return |
22670
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
864 i += 1 |
44dce874de97
revset: rely on built in iterator when possible in _generatorset.__iter__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22669
diff
changeset
|
865 return gen() |
20828
3210b7930899
revset: improve performance of _generatorset.__contains__ (issue 4201)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
20780
diff
changeset
|
866 |
3210b7930899
revset: improve performance of _generatorset.__contains__ (issue 4201)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
20780
diff
changeset
|
867 def _consumegen(self): |
22528
b6dc3b79bb25
revset: avoid in loop lookup in _generatorset._consumegen
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22527
diff
changeset
|
868 cache = self._cache |
b6dc3b79bb25
revset: avoid in loop lookup in _generatorset._consumegen
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22527
diff
changeset
|
869 genlist = self._genlist.append |
20634
f2bb7ba59456
revset: changed generatorset code to remove unnecesary function call
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20613
diff
changeset
|
870 for item in self._gen: |
22528
b6dc3b79bb25
revset: avoid in loop lookup in _generatorset._consumegen
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22527
diff
changeset
|
871 cache[item] = True |
b6dc3b79bb25
revset: avoid in loop lookup in _generatorset._consumegen
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22527
diff
changeset
|
872 genlist(item) |
20634
f2bb7ba59456
revset: changed generatorset code to remove unnecesary function call
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20613
diff
changeset
|
873 yield item |
22798
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
874 if not self._finished: |
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
875 self._finished = True |
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
876 asc = self._genlist[:] |
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
877 asc.sort() |
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
878 self._asclist = asc |
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
879 self.fastasc = asc.__iter__ |
586d7058ea48
generatorset: get list-based fast iterations after the generator is consumed
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22797
diff
changeset
|
880 self.fastdesc = asc.__reversed__ |
20703
e07b1fd30805
revset: added sort methods to generatorsets
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20695
diff
changeset
|
881 |
22996
a43d929d1fa1
generatorset: implement __len__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22995
diff
changeset
|
882 def __len__(self): |
a43d929d1fa1
generatorset: implement __len__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22995
diff
changeset
|
883 for x in self._consumegen(): |
a43d929d1fa1
generatorset: implement __len__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22995
diff
changeset
|
884 pass |
a43d929d1fa1
generatorset: implement __len__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22995
diff
changeset
|
885 return len(self._genlist) |
a43d929d1fa1
generatorset: implement __len__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22995
diff
changeset
|
886 |
20703
e07b1fd30805
revset: added sort methods to generatorsets
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20695
diff
changeset
|
887 def sort(self, reverse=False): |
22800
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
888 self._ascending = not reverse |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
889 |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
890 def reverse(self): |
29a8c20e14a8
generatorset: explicitly track iteration order
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22799
diff
changeset
|
891 self._ascending = not self._ascending |
20703
e07b1fd30805
revset: added sort methods to generatorsets
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20695
diff
changeset
|
892 |
22801
6af9e9b6af39
generatorset: implement isascending and isdescending
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22800
diff
changeset
|
893 def isascending(self): |
6af9e9b6af39
generatorset: implement isascending and isdescending
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22800
diff
changeset
|
894 return self._ascending |
6af9e9b6af39
generatorset: implement isascending and isdescending
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22800
diff
changeset
|
895 |
6af9e9b6af39
generatorset: implement isascending and isdescending
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22800
diff
changeset
|
896 def isdescending(self): |
6af9e9b6af39
generatorset: implement isascending and isdescending
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22800
diff
changeset
|
897 return not self._ascending |
6af9e9b6af39
generatorset: implement isascending and isdescending
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22800
diff
changeset
|
898 |
29346
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
899 def istopo(self): |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
900 # not worth the trouble asserting if the two sets combined are still |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
901 # in topographical order. Use the sort() predicate to explicitly sort |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
902 # again instead. |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
903 return False |
38e0c83c7ee4
revset: record if a set is in topographical order
Martijn Pieters <mjpieters@fb.com>
parents:
29304
diff
changeset
|
904 |
22811
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
905 def first(self): |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
906 if self._ascending: |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
907 it = self.fastasc |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
908 else: |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
909 it = self.fastdesc |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
910 if it is None: |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
911 # we need to consume all and try again |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
912 for x in self._consumegen(): |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
913 pass |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
914 return self.first() |
25146
f542a2c89b60
generatorset: use 'next()' to simplify the code
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25145
diff
changeset
|
915 return next(it(), None) |
22811
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
916 |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
917 def last(self): |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
918 if self._ascending: |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
919 it = self.fastdesc |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
920 else: |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
921 it = self.fastasc |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
922 if it is None: |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
923 # we need to consume all and try again |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
924 for x in self._consumegen(): |
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
925 pass |
33109
247bae545061
smartset: fix generatorset.last() to not return the first element (issue5609)
Yuya Nishihara <yuya@tcha.org>
parents:
33072
diff
changeset
|
926 return self.last() |
25146
f542a2c89b60
generatorset: use 'next()' to simplify the code
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25145
diff
changeset
|
927 return next(it(), None) |
22811
c1fd827e1ae0
generatorset: implement first and last methods
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
22810
diff
changeset
|
928 |
35901
f0827211eb1f
py3: build repr() of smartset as bytes then convert to str
Yuya Nishihara <yuya@tcha.org>
parents:
35838
diff
changeset
|
929 @encoding.strmethod |
24457
c5022f3579b9
revset: add __repr__ to all smartset classes
Yuya Nishihara <yuya@tcha.org>
parents:
24446
diff
changeset
|
930 def __repr__(self): |
c5022f3579b9
revset: add __repr__ to all smartset classes
Yuya Nishihara <yuya@tcha.org>
parents:
24446
diff
changeset
|
931 d = {False: '-', True: '+'}[self._ascending] |
35901
f0827211eb1f
py3: build repr() of smartset as bytes then convert to str
Yuya Nishihara <yuya@tcha.org>
parents:
35838
diff
changeset
|
932 return '<%s%s>' % (_typename(self), d) |
35501
12a46ad67a3c
smartset: split generatorset classes to avoid cycle
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|
933 |
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|
934 class _generatorsetasc(generatorset): |
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|
935 """Special case of generatorset optimized for ascending generators.""" |
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936 |
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|
937 fastasc = generatorset._iterator |
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|
938 |
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|
939 def __contains__(self, x): |
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940 if x in self._cache: |
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|
941 return self._cache[x] |
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|
942 |
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|
943 # Use new values only, as existing values would be cached. |
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|
944 for l in self._consumegen(): |
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|
945 if l == x: |
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|
946 return True |
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|
947 if l > x: |
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|
948 break |
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|
949 |
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|
950 self._cache[x] = False |
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|
951 return False |
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|
952 |
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|
953 class _generatorsetdesc(generatorset): |
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954 """Special case of generatorset optimized for descending generators.""" |
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|
955 |
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|
956 fastdesc = generatorset._iterator |
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|
957 |
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|
958 def __contains__(self, x): |
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959 if x in self._cache: |
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960 return self._cache[x] |
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|
961 |
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|
962 # Use new values only, as existing values would be cached. |
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963 for l in self._consumegen(): |
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964 if l == x: |
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|
965 return True |
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|
966 if l < x: |
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|
967 break |
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|
968 |
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|
969 self._cache[x] = False |
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|
970 return False |
24457
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|
971 |
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|
972 def spanset(repo, start=0, end=None): |
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973 """Create a spanset that represents a range of repository revisions |
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974 |
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|
975 start: first revision included the set (default to 0) |
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|
976 end: first revision excluded (last+1) (default to len(repo)) |
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|
977 |
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|
978 Spanset will be descending if `end` < `start`. |
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|
979 """ |
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|
980 if end is None: |
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|
981 end = len(repo) |
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|
982 ascending = start <= end |
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983 if not ascending: |
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|
984 start, end = end + 1, start + 1 |
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|
985 return _spanset(start, end, ascending, repo.changelog.filteredrevs) |
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|
986 |
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|
987 class _spanset(abstractsmartset): |
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|
988 """Duck type for baseset class which represents a range of revisions and |
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|
989 can work lazily and without having all the range in memory |
20737
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|
990 |
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|
991 Note that spanset(x, y) behave almost like xrange(x, y) except for two |
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|
992 notable points: |
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|
993 - when x < y it will be automatically descending, |
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|
994 - revision filtered with this repoview will be skipped. |
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|
995 |
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|
996 """ |
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|
997 def __init__(self, start, end, ascending, hiddenrevs): |
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|
998 self._start = start |
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|
999 self._end = end |
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|
1000 self._ascending = ascending |
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|
1001 self._hiddenrevs = hiddenrevs |
20521
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|
1002 |
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|
1003 def sort(self, reverse=False): |
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1004 self._ascending = not reverse |
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|
1005 |
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1006 def reverse(self): |
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1007 self._ascending = not self._ascending |
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|
1008 |
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|
1009 def istopo(self): |
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|
1010 # not worth the trouble asserting if the two sets combined are still |
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|
1011 # in topographical order. Use the sort() predicate to explicitly sort |
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|
1012 # again instead. |
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|
1013 return False |
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|
1014 |
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1015 def _iterfilter(self, iterrange): |
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1016 s = self._hiddenrevs |
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|
1017 for r in iterrange: |
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|
1018 if r not in s: |
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1019 yield r |
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1020 |
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|
1021 def __iter__(self): |
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1022 if self._ascending: |
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|
1023 return self.fastasc() |
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|
1024 else: |
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|
1025 return self.fastdesc() |
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1026 |
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|
1027 def fastasc(self): |
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|
1028 iterrange = xrange(self._start, self._end) |
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|
1029 if self._hiddenrevs: |
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|
1030 return self._iterfilter(iterrange) |
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1031 return iter(iterrange) |
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1032 |
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|
1033 def fastdesc(self): |
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1034 iterrange = xrange(self._end - 1, self._start - 1, -1) |
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1035 if self._hiddenrevs: |
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1036 return self._iterfilter(iterrange) |
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|
1037 return iter(iterrange) |
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|
1038 |
21201
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|
1039 def __contains__(self, rev): |
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|
1040 hidden = self._hiddenrevs |
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|
1041 return ((self._start <= rev < self._end) |
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|
1042 and not (hidden and rev in hidden)) |
20482
a979078bd788
revset: added spanset class to represent revision ranges
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20481
diff
changeset
|
1043 |
20716
fa1ac5faa7c4
revset: added __nonzero__ method to spanset class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20714
diff
changeset
|
1044 def __nonzero__(self): |
fa1ac5faa7c4
revset: added __nonzero__ method to spanset class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20714
diff
changeset
|
1045 for r in self: |
fa1ac5faa7c4
revset: added __nonzero__ method to spanset class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20714
diff
changeset
|
1046 return True |
fa1ac5faa7c4
revset: added __nonzero__ method to spanset class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20714
diff
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|
1047 return False |
fa1ac5faa7c4
revset: added __nonzero__ method to spanset class
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20714
diff
changeset
|
1048 |
31476
413b44003462
py3: add __bool__ to every class defining __nonzero__
Gregory Szorc <gregory.szorc@gmail.com>
parents:
31446
diff
changeset
|
1049 __bool__ = __nonzero__ |
413b44003462
py3: add __bool__ to every class defining __nonzero__
Gregory Szorc <gregory.szorc@gmail.com>
parents:
31446
diff
changeset
|
1050 |
20484
0f1ef9e9e904
revset: added operations to spanset to duck type baseset
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20483
diff
changeset
|
1051 def __len__(self): |
20521
1850a7f5fb66
revset: changed spanset implementation to take hidden revisions into account
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
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diff
changeset
|
1052 if not self._hiddenrevs: |
1850a7f5fb66
revset: changed spanset implementation to take hidden revisions into account
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
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diff
changeset
|
1053 return abs(self._end - self._start) |
1850a7f5fb66
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Lucas Moscovicz <lmoscovicz@fb.com>
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diff
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|
1054 else: |
1850a7f5fb66
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Lucas Moscovicz <lmoscovicz@fb.com>
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diff
changeset
|
1055 count = 0 |
21205
e2031c8ca4f8
revset: also inline spanset._contained in __len__
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
21204
diff
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|
1056 start = self._start |
e2031c8ca4f8
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Pierre-Yves David <pierre-yves.david@fb.com>
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diff
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|
1057 end = self._end |
20521
1850a7f5fb66
revset: changed spanset implementation to take hidden revisions into account
Lucas Moscovicz <lmoscovicz@fb.com>
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diff
changeset
|
1058 for rev in self._hiddenrevs: |
21284
3e53a64345c1
revset: cosmetic changes in spanset range comparison
Pierre-Yves David <pierre-yves.david@fb.com>
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21283
diff
changeset
|
1059 if (end < rev <= start) or (start <= rev < end): |
20521
1850a7f5fb66
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Lucas Moscovicz <lmoscovicz@fb.com>
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diff
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|
1060 count += 1 |
1850a7f5fb66
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diff
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|
1061 return abs(self._end - self._start) - count |
20484
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Lucas Moscovicz <lmoscovicz@fb.com>
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diff
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|
1062 |
20725
cf628b50afbb
revset: added isascending and isdescending methods to smartset classes
Lucas Moscovicz <lmoscovicz@fb.com>
parents:
20724
diff
changeset
|
1063 def isascending(self): |
23826
c90d195320c5
revset: fix spanset.isascending() to honor sort() or reverse() request
Yuya Nishihara <yuya@tcha.org>
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23724
diff
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|
1064 return self._ascending |
20725
cf628b50afbb
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Lucas Moscovicz <lmoscovicz@fb.com>
parents:
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diff
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|
1065 |
cf628b50afbb
revset: added isascending and isdescending methods to smartset classes
Lucas Moscovicz <lmoscovicz@fb.com>
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20724
diff
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|
1066 def isdescending(self): |
23826
c90d195320c5
revset: fix spanset.isascending() to honor sort() or reverse() request
Yuya Nishihara <yuya@tcha.org>
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diff
changeset
|
1067 return not self._ascending |
20725
cf628b50afbb
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Lucas Moscovicz <lmoscovicz@fb.com>
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diff
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|
1068 |
22809
88dad916c008
spanset: implement `first` and `last` methods
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diff
changeset
|
1069 def first(self): |
88dad916c008
spanset: implement `first` and `last` methods
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|
1070 if self._ascending: |
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|
1071 it = self.fastasc |
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|
1072 else: |
88dad916c008
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|
1073 it = self.fastdesc |
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|
1074 for x in it(): |
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|
1075 return x |
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|
1076 return None |
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|
1077 |
88dad916c008
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|
1078 def last(self): |
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|
1079 if self._ascending: |
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|
1080 it = self.fastdesc |
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|
1081 else: |
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|
1082 it = self.fastasc |
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|
1083 for x in it(): |
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|
1084 return x |
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|
1085 return None |
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|
1086 |
32821
9b7d615108d7
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Yuya Nishihara <yuya@tcha.org>
parents:
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|
1087 def _slice(self, start, stop): |
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|
1088 if self._hiddenrevs: |
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|
1089 # unoptimized since all hidden revisions in range has to be scanned |
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|
1090 return super(_spanset, self)._slice(start, stop) |
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|
1091 if self._ascending: |
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|
1092 x = min(self._start + start, self._end) |
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|
1093 y = min(self._start + stop, self._end) |
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|
1094 else: |
9b7d615108d7
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parents:
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changeset
|
1095 x = max(self._end - stop, self._start) |
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changeset
|
1096 y = max(self._end - start, self._start) |
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changeset
|
1097 return _spanset(x, y, self._ascending, self._hiddenrevs) |
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parents:
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|
1098 |
35901
f0827211eb1f
py3: build repr() of smartset as bytes then convert to str
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
1099 @encoding.strmethod |
24457
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parents:
24446
diff
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|
1100 def __repr__(self): |
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parents:
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diff
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|
1101 d = {False: '-', True: '+'}[self._ascending] |
35901
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|
1102 return '<%s%s %d:%d>' % (_typename(self), d, self._start, self._end) |
24457
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parents:
24446
diff
changeset
|
1103 |
32818
9ddb18ae342e
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
1104 class fullreposet(_spanset): |
22508
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parents:
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diff
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|
1105 """a set containing all revisions in the repo |
2434c68d82a8
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|
1106 |
24204
d2de20e1451f
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Yuya Nishihara <yuya@tcha.org>
parents:
24203
diff
changeset
|
1107 This class exists to host special optimization and magic to handle virtual |
d2de20e1451f
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Yuya Nishihara <yuya@tcha.org>
parents:
24203
diff
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|
1108 revisions such as "null". |
22508
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|
1109 """ |
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|
1110 |
2434c68d82a8
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|
1111 def __init__(self, repo): |
32818
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|
1112 super(fullreposet, self).__init__(0, len(repo), True, |
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|
1113 repo.changelog.filteredrevs) |
22508
2434c68d82a8
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|
1114 |
22510
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diff
changeset
|
1115 def __and__(self, other): |
23139
e53f6b72a0e4
spelling: fixes from proofreading of spell checker issues
Mads Kiilerich <madski@unity3d.com>
parents:
23127
diff
changeset
|
1116 """As self contains the whole repo, all of the other set should also be |
e53f6b72a0e4
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parents:
23127
diff
changeset
|
1117 in self. Therefore `self & other = other`. |
22510
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|
1118 |
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changeset
|
1119 This boldly assumes the other contains valid revs only. |
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|
1120 """ |
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|
1121 # other not a smartset, make is so |
22883
e7b8cf352614
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22882
diff
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|
1122 if not util.safehasattr(other, 'isascending'): |
22510
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|
1123 # filter out hidden revision |
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|
1124 # (this boldly assumes all smartset are pure) |
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|
1125 # |
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|
1126 # `other` was used with "&", let's assume this is a set like |
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|
1127 # object. |
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|
1128 other = baseset(other - self._hiddenrevs) |
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|
1129 |
23827
4982fade9733
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|
1130 other.sort(reverse=self.isdescending()) |
22510
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|
1131 return other |
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|
1132 |
30881
1be65deb3d54
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changeset
|
1133 def prettyformat(revs): |
24458
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|
1134 lines = [] |
36265
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|
1135 rs = pycompat.byterepr(revs) |
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|
1136 p = 0 |
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|
1137 while p < len(rs): |
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|
1138 q = rs.find('<', p + 1) |
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|
1139 if q < 0: |
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|
1140 q = len(rs) |
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|
1141 l = rs.count('<', 0, p) - rs.count('>', 0, p) |
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|
1142 assert l >= 0 |
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|
1143 lines.append((l, rs[p:q].rstrip())) |
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|
1144 p = q |
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|
1145 return '\n'.join(' ' * l + s for l, s in lines) |