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comparison mercurial/smartset.py @ 31066:c962bb6af909

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smartset: preserve istopo for baseset operations This is a follow-up of "smartset: use native set operations as fast paths". It's more correct to just preserve the "istopo" information for "&" and "-" operations, like what filteredset does.
author Jun Wu <quark@fb.com>
date Tue, 21 Feb 2017 16:29:31 -0800
parents 2d1bf84046f6
children 90fb0193f187
comparison
equal deleted inserted replaced
31062:88203f26ea57 31066:c962bb6af909
201 >>> ys.sort() 201 >>> ys.sort()
202 >>> [list(i) for i in [xs + ys, xs & ys, xs - ys]] 202 >>> [list(i) for i in [xs + ys, xs & ys, xs - ys]]
203 [[7, 6, 4, 0, 3, 5], [7, 6], [4, 0]] 203 [[7, 6, 4, 0, 3, 5], [7, 6], [4, 0]]
204 >>> [type(i).__name__ for i in [xs + ys, xs & ys, xs - ys]] 204 >>> [type(i).__name__ for i in [xs + ys, xs & ys, xs - ys]]
205 ['addset', 'baseset', 'baseset'] 205 ['addset', 'baseset', 'baseset']
206
207 istopo is preserved across set operations
208 >>> xs = baseset(set(x), istopo=True)
209 >>> rs = xs & ys
210 >>> type(rs).__name__
211 'baseset'
212 >>> rs._istopo
213 True
206 """ 214 """
207 def __init__(self, data=(), datarepr=None, istopo=False): 215 def __init__(self, data=(), datarepr=None, istopo=False):
208 """ 216 """
209 datarepr: a tuple of (format, obj, ...), a function or an object that 217 datarepr: a tuple of (format, obj, ...), a function or an object that
210 provides a printable representation of the given data. 218 provides a printable representation of the given data.
324 332
325 def _fastsetop(self, other, op): 333 def _fastsetop(self, other, op):
326 # try to use native set operations as fast paths 334 # try to use native set operations as fast paths
327 if (type(other) is baseset and '_set' in other.__dict__ and '_set' in 335 if (type(other) is baseset and '_set' in other.__dict__ and '_set' in
328 self.__dict__ and self._ascending is not None): 336 self.__dict__ and self._ascending is not None):
329 s = baseset(data=getattr(self._set, op)(other._set)) 337 s = baseset(data=getattr(self._set, op)(other._set),
338 istopo=self._istopo)
330 s._ascending = self._ascending 339 s._ascending = self._ascending
331 else: 340 else:
332 s = getattr(super(baseset, self), op)(other) 341 s = getattr(super(baseset, self), op)(other)
333 return s 342 return s
334 343