2005-09-17 22:51:26 +02:00
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# Copyright (c) 2005 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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2006-06-01 01:26:56 +02:00
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#
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# Authors: Nathan Binkert
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2005-09-17 22:51:26 +02:00
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__all__ = [ 'orderdict' ]
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2009-08-16 22:40:00 +02:00
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from UserDict import DictMixin
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class orderdict(dict, DictMixin):
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def __init__(self, *args, **kwargs):
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if len(args) > 1:
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raise TypeError("expected at most one argument, got %d" % \
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len(args))
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self._keys = []
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self.update(*args, **kwargs)
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2005-09-17 22:51:26 +02:00
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def __setitem__(self, key, item):
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if key not in self:
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2005-09-17 22:51:26 +02:00
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self._keys.append(key)
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2009-08-16 22:40:00 +02:00
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super(orderdict, self).__setitem__(key, item)
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2005-09-17 22:51:26 +02:00
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def __delitem__(self, key):
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super(orderdict, self).__delitem__(key)
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self._keys.remove(key)
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def clear(self):
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super(orderdict, self).clear()
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self._keys = []
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2009-08-16 22:40:00 +02:00
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def iterkeys(self):
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for key in self._keys:
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yield key
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2005-09-17 22:51:26 +02:00
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2009-08-16 22:40:00 +02:00
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def itervalues(self):
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for key in self._keys:
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yield self[key]
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2005-09-17 22:51:26 +02:00
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2009-08-16 22:40:00 +02:00
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def iteritems(self):
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for key in self._keys:
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yield key, self[key]
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2005-09-17 22:51:26 +02:00
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2009-08-16 22:40:00 +02:00
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def keys(self):
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return self._keys[:]
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2005-09-17 22:51:26 +02:00
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def values(self):
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return [ self[key] for key in self._keys ]
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def items(self):
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return [ (self[key],key) for key in self._keys ]
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