Mercurial > parpg-core

annotate ordereddict.py @ 192:191f89a22303

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Further work on the scripting system.
author KarstenBock@gmx.net
date Sun, 13 Nov 2011 17:19:14 +0100
parents 07ff8cf8a0f1
children
rev   line source
20
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1 # Copyright (c) 2009 Raymond Hettinger
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2 #
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3 # Permission is hereby granted, free of charge, to any person
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4 # obtaining a copy of this software and associated documentation files
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5 # (the "Software"), to deal in the Software without restriction,
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6 # including without limitation the rights to use, copy, modify, merge,
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7 # publish, distribute, sublicense, and/or sell copies of the Software,
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8 # and to permit persons to whom the Software is furnished to do so,
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9 # subject to the following conditions:
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10 #
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11 # The above copyright notice and this permission notice shall be
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12 # included in all copies or substantial portions of the Software.
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13 #
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14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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15 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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16 # OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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17 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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18 # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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19 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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20 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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21 # OTHER DEALINGS IN THE SOFTWARE.
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22
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23 from UserDict import DictMixin
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24
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25 class OrderedDict(dict, DictMixin):
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26
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27 def __init__(self, *args, **kwds):
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28 if len(args) > 1:
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29 raise TypeError('expected at most 1 arguments, got %d' % len(args))
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30 try:
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31 self.__end
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32 except AttributeError:
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33 self.clear()
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34 self.update(*args, **kwds)
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35
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36 def clear(self):
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37 self.__end = end = []
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38 end += [None, end, end] # sentinel node for doubly linked list
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39 self.__map = {} # key --> [key, prev, next]
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40 dict.clear(self)
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41
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42 def __setitem__(self, key, value):
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43 if key not in self:
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44 end = self.__end
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45 curr = end[1]
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46 curr[2] = end[1] = self.__map[key] = [key, curr, end]
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47 dict.__setitem__(self, key, value)
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48
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49 def __delitem__(self, key):
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50 dict.__delitem__(self, key)
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51 key, prev, next = self.__map.pop(key)
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52 prev[2] = next
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53 next[1] = prev
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54
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55 def __iter__(self):
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56 end = self.__end
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57 curr = end[2]
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58 while curr is not end:
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59 yield curr[0]
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60 curr = curr[2]
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61
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62 def __reversed__(self):
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63 end = self.__end
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64 curr = end[1]
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65 while curr is not end:
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66 yield curr[0]
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67 curr = curr[1]
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68
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69 def popitem(self, last=True):
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70 if not self:
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71 raise KeyError('dictionary is empty')
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72 if last:
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73 key = reversed(self).next()
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74 else:
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75 key = iter(self).next()
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76 value = self.pop(key)
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77 return key, value
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78
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79 def __reduce__(self):
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80 items = [[k, self[k]] for k in self]
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81 tmp = self.__map, self.__end
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82 del self.__map, self.__end
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83 inst_dict = vars(self).copy()
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84 self.__map, self.__end = tmp
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85 if inst_dict:
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86 return (self.__class__, (items,), inst_dict)
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87 return self.__class__, (items,)
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88
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89 def keys(self):
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90 return list(self)
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91
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92 setdefault = DictMixin.setdefault
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93 update = DictMixin.update
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94 pop = DictMixin.pop
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95 values = DictMixin.values
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96 items = DictMixin.items
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97 iterkeys = DictMixin.iterkeys
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98 itervalues = DictMixin.itervalues
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99 iteritems = DictMixin.iteritems
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100
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101 def __repr__(self):
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102 if not self:
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103 return '%s()' % (self.__class__.__name__,)
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104 return '%s(%r)' % (self.__class__.__name__, self.items())
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105
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106 def copy(self):
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107 return self.__class__(self)
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108
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109 @classmethod
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110 def fromkeys(cls, iterable, value=None):
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111 d = cls()
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112 for key in iterable:
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113 d[key] = value
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114 return d
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115
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116 def __eq__(self, other):
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117 if isinstance(other, OrderedDict):
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118 if len(self) != len(other):
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119 return False
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120 for p, q in zip(self.items(), other.items()):
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121 if p != q:
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122 return False
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123 return True
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124 return dict.__eq__(self, other)
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125
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126 def __ne__(self, other):
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127 return not self == other