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63 lines
1.8 KiB
63 lines
1.8 KiB
4 months ago
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class LookupDictionary(dict):
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"""
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a dictionary which can lookup value by key, or keys by value
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"""
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def __init__(self, items=[]):
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"""items can be a list of pair_lists or a dictionary"""
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dict.__init__(self, items)
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def get_keys_for_value(self, value, fail_value=None):
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"""find the key(s) as a list given a value"""
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list_result = [item[0] for item in self.items() if item[1] == value]
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if len(list_result) > 0:
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return list_result
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return fail_value
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def get_first_key_for_value(self, value, fail_value=None):
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"""return the first key of this dictionary given the value"""
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list_result = [item[0] for item in self.items() if item[1] == value]
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if len(list_result) > 0:
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return list_result[0]
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return fail_value
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def get_value(self, key, fail_value=None):
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"""find the value given a key"""
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if key in self:
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return self[key]
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return fail_value
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class Enum(LookupDictionary):
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def __init__(self, initial_value=0, items=[]):
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"""items can be a list of pair_lists or a dictionary"""
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LookupDictionary.__init__(self, items)
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self.value = initial_value
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def set_value(self, v):
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v_typename = typeof(v).__name__
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if v_typename == 'str':
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if str in self:
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v = self[v]
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else:
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v = 0
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else:
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self.value = v
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def get_enum_value(self):
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return self.value
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def get_enum_name(self):
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return self.__str__()
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def __str__(self):
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s = self.get_first_key_for_value(self.value, None)
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if s is None:
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s = "%#8.8x" % self.value
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return s
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def __repr__(self):
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return self.__str__()
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