Mercurial > repos > devteam > subtract

comparison utils/odict.py @ 0:5bc2dacbe729

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Imported from capsule None
author devteam
date Tue, 01 Apr 2014 10:52:51 -0400
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:5bc2dacbe729
1 """
2 Ordered dictionary implementation.
3 """
4
5 from UserDict import UserDict
6
7 class odict(UserDict):
8 """
9 http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/107747
10
11 This dictionary class extends UserDict to record the order in which items are
12 added. Calling keys(), values(), items(), etc. will return results in this
13 order.
14 """
15 def __init__( self, dict = None ):
16 self._keys = []
17 UserDict.__init__( self, dict )
18
19 def __delitem__( self, key ):
20 UserDict.__delitem__( self, key )
21 self._keys.remove( key )
22
23 def __setitem__( self, key, item ):
24 UserDict.__setitem__( self, key, item )
25 if key not in self._keys:
26 self._keys.append( key )
27
28 def clear( self ):
29 UserDict.clear( self )
30 self._keys = []
31
32 def copy(self):
33 new = odict()
34 new.update( self )
35 return new
36
37 def items( self ):
38 return zip( self._keys, self.values() )
39
40 def keys( self ):
41 return self._keys[:]
42
43 def popitem( self ):
44 try:
45 key = self._keys[-1]
46 except IndexError:
47 raise KeyError( 'dictionary is empty' )
48 val = self[ key ]
49 del self[ key ]
50 return ( key, val )
51
52 def setdefault( self, key, failobj=None ):
53 if key not in self._keys:
54 self._keys.append( key )
55 return UserDict.setdefault( self, key, failobj )
56
57 def update( self, dict ):
58 for ( key, val ) in dict.items():
59 self.__setitem__( key, val )
60
61 def values( self ):
62 return map( self.get, self._keys )
63
64 def iterkeys( self ):
65 return iter( self._keys )
66
67 def itervalues( self ):
68 for key in self._keys:
69 yield self.get( key )
70
71 def iteritems( self ):
72 for key in self._keys:
73 yield key, self.get( key )
74
75 def __iter__( self ):
76 for key in self._keys:
77 yield key
78
79 def reverse( self ):
80 self._keys.reverse()
81
82 def insert( self, index, key, item ):
83 if key not in self._keys:
84 self._keys.insert( index, key )
85 UserDict.__setitem__( self, key, item )