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44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
from __future__ import absolute_import, division, unicode_literals
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from datrie import Trie as DATrie
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from six import text_type
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from ._base import Trie as ABCTrie
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class Trie(ABCTrie):
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def __init__(self, data):
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chars = set()
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for key in data.keys():
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if not isinstance(key, text_type):
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raise TypeError("All keys must be strings")
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for char in key:
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chars.add(char)
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self._data = DATrie("".join(chars))
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for key, value in data.items():
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self._data[key] = value
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def __contains__(self, key):
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return key in self._data
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def __len__(self):
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return len(self._data)
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def __iter__(self):
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raise NotImplementedError()
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def __getitem__(self, key):
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return self._data[key]
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def keys(self, prefix=None):
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return self._data.keys(prefix)
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def has_keys_with_prefix(self, prefix):
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return self._data.has_keys_with_prefix(prefix)
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def longest_prefix(self, prefix):
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return self._data.longest_prefix(prefix)
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def longest_prefix_item(self, prefix):
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return self._data.longest_prefix_item(prefix)
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