37 lines
1016 B
Python
37 lines
1016 B
Python
|
"""
|
||
|
|
Objective-C runtime wrapper for use by LLDB Python formatters
|
||
|
|
|
||
|
|
part of The LLVM Compiler Infrastructure
|
||
|
|
This file is distributed under the University of Illinois Open Source
|
||
|
|
License. See LICENSE.TXT for details.
|
||
|
|
"""
|
||
|
|
import lldb.formatters.metrics
|
||
|
|
|
||
|
|
|
||
|
|
class Cache:
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
self.data = {}
|
||
|
|
self.statistics = lldb.formatters.metrics.Metrics()
|
||
|
|
self.statistics.add_metric('hit')
|
||
|
|
self.statistics.add_metric('miss')
|
||
|
|
|
||
|
|
def look_for_key(self, key):
|
||
|
|
if key in self.data:
|
||
|
|
return True
|
||
|
|
return False
|
||
|
|
|
||
|
|
def add_item(self, key, value, ok_to_replace=True):
|
||
|
|
if not(ok_to_replace) and self.look_for_key(key):
|
||
|
|
return False
|
||
|
|
self.data[key] = value
|
||
|
|
return True
|
||
|
|
|
||
|
|
def get_value(self, key, default=None):
|
||
|
|
if self.look_for_key(key):
|
||
|
|
self.statistics.metric_hit('hit', key)
|
||
|
|
return self.data[key]
|
||
|
|
else:
|
||
|
|
self.statistics.metric_hit('miss', key)
|
||
|
|
return default
|