mirror of
https://github.com/qemu/qemu.git
synced 2024-12-05 09:43:44 +08:00
e89ac222aa
We need this to parse dictionaries with schema ordering intact so that C prototypes can be generated deterministically. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>
128 lines
4.0 KiB
Python
128 lines
4.0 KiB
Python
# Copyright (c) 2009 Raymond Hettinger
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person
|
|
# obtaining a copy of this software and associated documentation files
|
|
# (the "Software"), to deal in the Software without restriction,
|
|
# including without limitation the rights to use, copy, modify, merge,
|
|
# publish, distribute, sublicense, and/or sell copies of the Software,
|
|
# and to permit persons to whom the Software is furnished to do so,
|
|
# subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be
|
|
# included in all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|
# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
# OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
from UserDict import DictMixin
|
|
|
|
class OrderedDict(dict, DictMixin):
|
|
|
|
def __init__(self, *args, **kwds):
|
|
if len(args) > 1:
|
|
raise TypeError('expected at most 1 arguments, got %d' % len(args))
|
|
try:
|
|
self.__end
|
|
except AttributeError:
|
|
self.clear()
|
|
self.update(*args, **kwds)
|
|
|
|
def clear(self):
|
|
self.__end = end = []
|
|
end += [None, end, end] # sentinel node for doubly linked list
|
|
self.__map = {} # key --> [key, prev, next]
|
|
dict.clear(self)
|
|
|
|
def __setitem__(self, key, value):
|
|
if key not in self:
|
|
end = self.__end
|
|
curr = end[1]
|
|
curr[2] = end[1] = self.__map[key] = [key, curr, end]
|
|
dict.__setitem__(self, key, value)
|
|
|
|
def __delitem__(self, key):
|
|
dict.__delitem__(self, key)
|
|
key, prev, next = self.__map.pop(key)
|
|
prev[2] = next
|
|
next[1] = prev
|
|
|
|
def __iter__(self):
|
|
end = self.__end
|
|
curr = end[2]
|
|
while curr is not end:
|
|
yield curr[0]
|
|
curr = curr[2]
|
|
|
|
def __reversed__(self):
|
|
end = self.__end
|
|
curr = end[1]
|
|
while curr is not end:
|
|
yield curr[0]
|
|
curr = curr[1]
|
|
|
|
def popitem(self, last=True):
|
|
if not self:
|
|
raise KeyError('dictionary is empty')
|
|
if last:
|
|
key = reversed(self).next()
|
|
else:
|
|
key = iter(self).next()
|
|
value = self.pop(key)
|
|
return key, value
|
|
|
|
def __reduce__(self):
|
|
items = [[k, self[k]] for k in self]
|
|
tmp = self.__map, self.__end
|
|
del self.__map, self.__end
|
|
inst_dict = vars(self).copy()
|
|
self.__map, self.__end = tmp
|
|
if inst_dict:
|
|
return (self.__class__, (items,), inst_dict)
|
|
return self.__class__, (items,)
|
|
|
|
def keys(self):
|
|
return list(self)
|
|
|
|
setdefault = DictMixin.setdefault
|
|
update = DictMixin.update
|
|
pop = DictMixin.pop
|
|
values = DictMixin.values
|
|
items = DictMixin.items
|
|
iterkeys = DictMixin.iterkeys
|
|
itervalues = DictMixin.itervalues
|
|
iteritems = DictMixin.iteritems
|
|
|
|
def __repr__(self):
|
|
if not self:
|
|
return '%s()' % (self.__class__.__name__,)
|
|
return '%s(%r)' % (self.__class__.__name__, self.items())
|
|
|
|
def copy(self):
|
|
return self.__class__(self)
|
|
|
|
@classmethod
|
|
def fromkeys(cls, iterable, value=None):
|
|
d = cls()
|
|
for key in iterable:
|
|
d[key] = value
|
|
return d
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, OrderedDict):
|
|
if len(self) != len(other):
|
|
return False
|
|
for p, q in zip(self.items(), other.items()):
|
|
if p != q:
|
|
return False
|
|
return True
|
|
return dict.__eq__(self, other)
|
|
|
|
def __ne__(self, other):
|
|
return not self == other
|