lldb/examples/python/dict_utils.py

   1 class LookupDictionary(dict):
   2     """
   3     a dictionary which can lookup value by key, or keys by value
   4     """
   5
   6     def __init__(self, items=[]):
   7         """items can be a list of pair_lists or a dictionary"""
   8         dict.__init__(self, items)
   9
  10     def get_keys_for_value(self, value, fail_value=None):
  11         """find the key(s) as a list given a value"""
  12         list_result = [item[0] for item in self.items() if item[1] == value]
  13         if len(list_result) > 0:
  14             return list_result
  15         return fail_value
  16
  17     def get_first_key_for_value(self, value, fail_value=None):
  18         """return the first key of this dictionary given the value"""
  19         list_result = [item[0] for item in self.items() if item[1] == value]
  20         if len(list_result) > 0:
  21             return list_result[0]
  22         return fail_value
  23
  24     def get_value(self, key, fail_value=None):
  25         """find the value given a key"""
  26         if key in self:
  27             return self[key]
  28         return fail_value
  29
  30
  31 class Enum(LookupDictionary):
  32     def __init__(self, initial_value=0, items=[]):
  33         """items can be a list of pair_lists or a dictionary"""
  34         LookupDictionary.__init__(self, items)
  35         self.value = initial_value
  36
  37     def set_value(self, v):
  38         v_typename = typeof(v).__name__
  39         if v_typename == "str":
  40             if str in self:
  41                 v = self[v]
  42             else:
  43                 v = 0
  44         else:
  45             self.value = v
  46
  47     def get_enum_value(self):
  48         return self.value
  49
  50     def get_enum_name(self):
  51         return self.__str__()
  52
  53     def __str__(self):
  54         s = self.get_first_key_for_value(self.value, None)
  55         if s is None:
  56             s = "%#8.8x" % self.value
  57         return s
  58
  59     def __repr__(self):
  60         return self.__str__()