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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.
"""
class AttributesDictionary:
def __init__(self, allow_reset=True):
# need to do it this way to prevent endless recursion
self.__dict__['_dictionary'] = {}
self.__dict__['_allow_reset'] = allow_reset
def __getattr__(self, name):
if not self._check_exists(name):
return None
value = self._dictionary[name]
return value
def _set_impl(self, name, value):
self._dictionary[name] = value
def _check_exists(self, name):
return name in self._dictionary
def __setattr__(self, name, value):
if self._allow_reset:
self._set_impl(name, value)
else:
self.set_if_necessary(name, value)
def set_if_necessary(self, name, value):
if not self._check_exists(name):
self._set_impl(name, value)
return True
return False
def __len__(self):
return len(self._dictionary)
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