Source Code for Module lldb.formatters.cache

 1  """ 
 2  Objective-C runtime wrapper for use by LLDB Python formatters 
 3   
 4  part of The LLVM Compiler Infrastructure 
 5  This file is distributed under the University of Illinois Open Source 
 6  License. See LICENSE.TXT for details. 
 7  """ 
 8  import lldb.formatters.metrics 
 9   
10 -class Cache: 
11 -        def __init__(self): 
12                  self.data = {} 
13                  self.statistics = lldb.formatters.metrics.Metrics() 
14                  self.statistics.add_metric('hit') 
15                  self.statistics.add_metric('miss') 
16   
17 -        def look_for_key(self,key): 
18                  if key in self.data: 
19                          return True 
20                  return False 
21   
22 -        def add_item(self,key,value,ok_to_replace=True): 
23                  if not(ok_to_replace) and self.look_for_key(key): 
24                          return False 
25                  self.data[key] = value 
26                  return True 
27   
28 -        def get_value(self,key,default=None): 
29                  if self.look_for_key(key): 
30                          self.statistics.metric_hit('hit',key) 
31                          return self.data[key] 
32                  else: 
33                          self.statistics.metric_hit('miss',key) 
34                          return default 
35