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+# Copyright (c) 2006 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Nathan Binkert
+
+__all__ = [ 'attrdict', 'optiondict' ]
+
+class attrdict(dict):
+ def __getattr__(self, attr):
+ if attr in self:
+ return self.__getitem__(attr)
+ return super(attrdict, self).__getattribute__(attr)
+
+ def __setattr__(self, attr, value):
+ if attr in dir(self):
+ return super(attrdict, self).__setattr__(attr, value)
+ return self.__setitem__(attr, value)
+
+ def __delattr__(self, attr):
+ if attr in self:
+ return self.__delitem__(attr)
+ return super(attrdict, self).__delattr__(attr, value)
+
+class optiondict(attrdict):
+ def __getattr__(self, attr):
+ try:
+ return super(optiondict, self).__getattr__(attr)
+ except AttributeError:
+ #d = optionsdict()
+ #setattr(self, attr, d)
+ return None
+
+if __name__ == '__main__':
+ x = attrdict()
+ x.y = 1
+ x['z'] = 2
+ print x['y'], x.y
+ print x['z'], x.z
+ print dir(x)
+ print x
+
+ print
+
+ del x['y']
+ del x.z
+ print dir(x)
+ print(x)