153 lines
4.3 KiB
Python
Executable file
153 lines
4.3 KiB
Python
Executable file
"""Drop-in replacement for collections.AttributedDict by Raymond Hettinger
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http://code.activestate.com/recipes/576693/
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"""
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try:
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try:
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from collections.abc import MutableMapping as DictMixin
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except ImportError:
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from collections import MutableMapping as DictMixin
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py_level = 3
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except ImportError:
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# noinspection PyUnresolvedReferences,PyCompatibility
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from UserDict import DictMixin
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py_level = 2
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# Modified from original to support Python 2.4, see
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# http://code.google.com/p/dirtyjson/issues/detail?id=53
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try:
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# noinspection PyStatementEffect
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all
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except NameError:
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# noinspection PyShadowingBuiltins
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def all(seq):
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for elem in seq:
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if not elem:
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return False
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return True
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class AttributedDict(dict, DictMixin):
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def __init__(self):
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super(AttributedDict, self).__init__()
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self.__attributes = {}
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self.clear()
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# noinspection PyAttributeOutsideInit
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def clear(self):
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self.__end = end = []
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end += [None, end, end] # sentinel node for doubly linked list
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self.__map = {} # key --> [key, prev, next]
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dict.clear(self)
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def add_with_attributes(self, key, value, attributes):
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self.__setitem__(key, value)
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self.__attributes[key] = attributes
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def attributes(self, key):
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return self.__attributes.get(key)
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def __setitem__(self, key, value):
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if key not in self:
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end = self.__end
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curr = end[1]
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curr[2] = end[1] = self.__map[key] = [key, curr, end]
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dict.__setitem__(self, key, value)
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def __delitem__(self, key):
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dict.__delitem__(self, key)
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key, prev, next_entry = self.__map.pop(key)
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prev[2] = next_entry
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next_entry[1] = prev
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def __iter__(self):
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end = self.__end
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curr = end[2]
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while curr is not end:
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yield curr[0]
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curr = curr[2]
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def __reversed__(self):
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end = self.__end
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curr = end[1]
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while curr is not end:
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yield curr[0]
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curr = curr[1]
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def popitem(self, last=True):
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if not self:
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raise KeyError('dictionary is empty')
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# Modified from original to support Python 2.4, see
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# http://code.google.com/p/dirtyjson/issues/detail?id=53
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if py_level == 2:
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if last:
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# noinspection PyUnresolvedReferences
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key = reversed(self).next()
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else:
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# noinspection PyUnresolvedReferences
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key = iter(self).next()
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else:
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if last:
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key = next(reversed(self))
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else:
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key = next(iter(self))
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value = self.pop(key)
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return key, value
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def __reduce__(self):
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items = [[k, self[k]] for k in self]
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tmp = self.__map, self.__end
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del self.__map, self.__end
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inst_dict = vars(self).copy()
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self.__map, self.__end = tmp
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if inst_dict:
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return self.__class__, (items,), inst_dict
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return self.__class__, (items,)
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def keys(self):
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return list(self)
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setdefault = DictMixin.setdefault
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update = DictMixin.update
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pop = DictMixin.pop
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values = DictMixin.values
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items = DictMixin.items
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def __repr__(self):
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if not self:
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return '%s()' % (self.__class__.__name__,)
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return '%s(%s)' % (self.__class__.__name__, list(self.items()))
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def copy(self):
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return self.__class__(self)
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# noinspection PyMethodOverriding
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@classmethod
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def fromkeys(cls, iterable, value=None):
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d = cls()
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for key in iterable:
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d[key] = value
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return d
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def __eq__(self, other):
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if isinstance(other, AttributedDict):
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return len(self) == len(other) and all(
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p == q for p, q in zip(sorted(self.items()), sorted(other.items())))
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return dict.__eq__(self, other)
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def __ne__(self, other):
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return not self == other
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class AttributedList(list):
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def __init__(self):
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super(AttributedList, self).__init__()
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self.__attributes = []
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def append(self, value, attributes=None):
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super(AttributedList, self).append(value)
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self.__attributes.append(attributes)
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def attributes(self, index):
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return self.__attributes[index]
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