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"""
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
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