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root/cvsroot/CMSSW/PhysicsTools/PythonAnalysis/python/iterators.py
Revision: 1.3
Committed: Fri Apr 20 12:38:06 2007 UTC (18 years ago) by hegner
Content type: text/x-python
Branch: MAIN
CVS Tags: CMSSW_6_2_0, CMSSW_6_2_0_pre7_TS133806, CMSSW_5_3_11_patch3, CMSSW_6_1_2_SLHC6_patch1, CMSSW_5_3_11_patch2, CMSSW_5_3_11_patch1, CMSSW_6_2_0_pre8, CMSSW_6_1_2_SLHC6, CMSSW_4_1_8_patch13, CMSSW_6_1_2_SLHC5, CMSSW_5_3_11, CMSSW_6_2_0_pre7_TS132947, CMSSW_4_4_5_patch3, CMSSW_6_2_0_pre7_g496p02, CMSSW_6_2_0_pre7, CMSSW_5_3_10_patch2, CMSSW_6_1_2_SLHC4_patch1, CMSSW_6_1_2_SLHC4, CMSSW_6_1_2_SLHC2_patch3, CMSSW_6_2_0_pre6_patch1, CMSSW_6_1_2_SLHC2_patch2, CMSSW_6_2_0_pre6, CMSSW_5_3_10_patch1, CMSSW_6_1_2_SLHC3, CMSSW_6_1_2_SLHC2_patch1, CMSSW_4_1_8_patch11, CMSSW_5_3_10, CMSSW_6_1_2_SLHC2, CMSSW_6_2_0_pre5slc6, CMSSW_5_3_9_patch3, CMSSW_6_1_2_SLHC1, CMSSW_6_2_0_pre5, CMSSW_6_1_X_2012-12-19-0200, CMSSW_6_0_X_2012-08-07-0200, CMSSW_5_2_X_2012-05-03-0200, CMSSW_5_2_X_2012-03-08-0200, CMSSW_5_0_X_2011-12-18-0200, CMSSW_4_4_X_2011-06-09-0400, CMSSW_5_3_9_patch2, CMSSW_6_1_2, CMSSW_6_2_0_pre4, CMSSW_5_3_9_patch1, CMSSW_6_2_0_pre3, CMSSW_6_1_1_SLHCphase2tk1, CMSSW_5_3_9, 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CMSSW_1_6_11_pre1, CMSSW_2_0_0_pre5, CMSSW_1_8_1, CMSSW_2_0_0_pre4, CMSSW_1_8_0, CMSSW_1_7_6, CMSSW_2_0_0_pre3, CMSSW_1_6_10, CMSSW_1_8_0_pre10, CMSSW_1_6_10_pre2, CMSSW_1_6_10_pre1, CMSSW_1_8_0_pre9, CMSSW_2_0_0_pre2, CMSSW_2_0_0_pre1, CMSSW_1_6_9, CMSSW_1_8_0_pre8, CMSSW_1_6_9_pre2, CMSSW_1_8_0_pre7, CMSSW_1_6_9_pre1, CMSSW_1_7_5, CMSSW_1_8_0_pre6, CMSSW_1_8_0_pre5, CMSSW_1_7_4, CMSSW_1_7_3, CMSSW_1_8_0_pre4, CMSSW_1_6_8, CMSSW_1_6_8_pre2, CMSSW_1_8_0_pre3a, CMSSW_1_7_2, CMSSW_1_8_0_pre2, CMSSW_1_6_8_pre1, CMSSW_1_7_1, CMSSW_1_8_0_pre1, CMSSW_1_7_0, CMSSW_1_7_0_pre13, CMSSW_1_4_10, CMSSW_1_7_0_pre12, CMSSW_1_7_0_pre11, CMSSW_1_7_0_pre10, CMSSW_1_7_0_pre9, CMSSW_1_7_0_pre8, CMSSW_1_7_0_pre7, CMSSW_1_4_9, CMSSW_1_4_8, CMSSW_1_6_7, CMSSW_1_7_0_pre6, CMSSW_1_6_6, CMSSW_1_6_5, CMSSW_1_6_5_pre1, CMSSW_1_6_4, CMSSW_1_7_0_pre5, CMSSW_1_6_3, CMSSW_1_6_1, CMSSW_1_7_0_pre4, CMSSW_1_7_0_pre3, CMSSW_1_7_0_pre2, CMSSW_1_6_0, CMSSW_1_6_0_pre14, CMSSW_1_7_0_pre1, CMSSW_1_6_0_DAQ3, CMSSW_1_6_0_pre13, CMSSW_1_6_0_pre12, CMSSW_1_6_0_pre11, CMSSW_1_6_0_pre10, CMSSW_1_4_7, CMSSW_1_6_0_pre9, CMSSW_1_6_0_pre8, CMSSW_1_5_4, CMSSW_1_6_0_pre7, CMSSW_1_5_3, CMSSW_1_6_0_pre6, CMSSW_1_4_6, CMSSW_1_6_0_DAQ1, CMSSW_1_6_0_pre5, V00-01-09, CMSSW_1_6_0_pre4, CMSSW_1_5_2, CMSSW_1_6_0_pre3, CMSSW_1_6_0_pre2, CMSSW_1_6_0_pre1, CMSSW_1_5_1, CMSSW_1_4_5, CMSSW_1_5_0, CMSSW_1_4_3g483, V00-01-08, CMSSW_1_4_4, CMSSW_1_5_0_pre6, CMSSW_1_4_3, CMSSW_1_5_0_pre5, CMSSW_1_4_2, CMSSW_1_4_1, CMSSW_1_5_0_pre4, CMSSW_1_5_0_pre3, CMSSW_1_4_0_DAQ1, CMSSW_1_4_0, CMSSW_1_5_0_pre2, CMSSW_1_4_0_pre7, CMSSW_1_4_0_pre6, CMSSW_1_4_0_pre5, CMSSW_1_5_0_pre1, CMSSW_1_4_0_pre4, V00-01-07, V00-01-06, HEAD
Changes since 1.2: +1 -1 lines
Log Message: 
fixing show stopper bug

File Contents

# Content
1 # decorator for adding iterators to container like objects
2 # NOTE: EventBranch._readData has to be taken care of at another place!
3
4 #import cmserror
5
6 def addIterator(obj):
7 """function for adding iterators to objects"""
8 if not hasattr(obj, "__iter__"):
9 if hasattr(obj, "size"):
10 obj.__iter__ = iteratorForSizedObjects
11 else:
12 try:
13 begin, end = _findIterators(obj)
14 except:
15 return obj
16 if not hasattr(obj, "_begin") and hasattr(obj, "_end"):
17 obj._begin = begin
18 obj._end = end
19 obj.__iter__ = iteratorForBeginEnd
20 #else:
21 # obj.__iter__ = EmptyIterator
22 return obj
23
24
25 def iteratorForSizedObjects(self):
26 """dynamically added iterator"""
27 entries = container.size()
28 for entry in xrange(entries):
29 yield obj[entry]
30
31
32 def iteratorForBeginEnd(self):
33 """dynamically added iterator"""
34 it = self._begin
35 while (it != self.end):
36 yield begin.__deref__() #*b
37 begin.__preinc__() #++b
38
39
40 def emptyIterator(self):
41 """empty iterator"""
42 raise cmserror("Automatic iterator search failed for %s. Either it is no iterable or it has multiple iterator possibilites. Please use loop(begin, end) instead." %obj )
43
44
45 # automatic detection of iterators.
46 def _findIterators(obj):
47 objDict = obj.__dict__
48 _beginNames = [name for name in objDict.keys() if "begin" in
49 name.lower()]
50 _endNames = [name for name in objDict.keys() if "end" in name.lower()]
51 if len(_beginNames)==1 and len(_endNames)== 1 and _beginNames[0].lower().replace("begin","") == _endNames[0].lower().replace("end",""):
52 return objDict[_beginNames[0]], objDict[_endNames[0]]
53 else:
54 return False
55
56
57
58 ##########################
59 if __name__ == "__main__":
60
61 import unittest
62 class TestIterators(unittest.TestCase):
63
64 def testFindIterators(self):
65 class A(object):
66 pass
67 a = A()
68 a.BeGin_foo = 1
69 a.EnD_foo = 100
70 self.assertEqual(_findIterators(a),(1,100))
71 a.begin_bar = 1
72 a.end_bar = 100
73 self.failIf(_findIterators(a))
74
75 def testAddIterator(self):
76 # test for size types
77 class A(object):
78 size = 3
79 a = A()
80 a = addIterator(a)
81 self.assert_(hasattr(a, "__iter__"))
82 # test if __iter__ already there
83 class B(object):
84 def __iter__(self):
85 return True
86 b = B()
87 b = addIterator(b)
88 self.assert_(b.__iter__())
89
90
91 unittest.main()
92
93