src/python/m5/attrdict.py

   1 # Copyright (c) 2006 The Regents of The University of Michigan
   2 # All rights reserved.
   3 #
   4 # Redistribution and use in source and binary forms, with or without
   5 # modification, are permitted provided that the following conditions are
   6 # met: redistributions of source code must retain the above copyright
   7 # notice, this list of conditions and the following disclaimer;
   8 # redistributions in binary form must reproduce the above copyright
   9 # notice, this list of conditions and the following disclaimer in the
  10 # documentation and/or other materials provided with the distribution;
  11 # neither the name of the copyright holders nor the names of its
  12 # contributors may be used to endorse or promote products derived from
  13 # this software without specific prior written permission.
  14 #
  15 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  17 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  18 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  19 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  20 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 #
  27 # Authors: Nathan Binkert
  28
  29 __all__ = [ 'attrdict' ]
  30
  31 class attrdict(dict):
  32     def __getattr__(self, attr):
  33         if attr in self:
  34             return self.__getitem__(attr)
  35         return super(attrdict, self).__getattribute__(attr)
  36
  37     def __setattr__(self, attr, value):
  38         if attr in dir(self):
  39             return super(attrdict, self).__setattr__(attr, value)
  40         return self.__setitem__(attr, value)
  41
  42     def __delattr__(self, attr):
  43         if attr in self:
  44             return self.__delitem__(attr)
  45         return super(attrdict, self).__delattr__(attr, value)
  46
  47 if __name__ == '__main__':
  48     x = attrdict()
  49     x.y = 1
  50     x['z'] = 2
  51     print x['y'], x.y
  52     print x['z'], x.z
  53     print dir(x)
  54     print x
  55
  56     print
  57
  58     del x['y']
  59     del x.z
  60     print dir(x)
  61     print(x)