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"""
Objective-C runtime wrapper for use by LLDB Python formatters
Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
See https://llvm.org/LICENSE.txt for license information.
SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""
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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