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##############################################################################
#
# Copyright (c) 2003 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
# Example objects for pickling.
from persistent import Persistent
from persistent._compat import PYTHON2
def print_dict(d):
d = d.items()
d.sort()
print('{%s}' % (', '.join(
[('%r: %r' % (k, v)) for (k, v) in d]
)))
def cmpattrs(self, other, *attrs):
for attr in attrs:
if attr[:3] in ('_v_', '_p_'):
continue
lhs, rhs = getattr(self, attr, None), getattr(other, attr, None)
if PYTHON2:
c = cmp(lhs, rhs)
if c:
return c
else:
if lhs != rhs:
return 1
return 0
class Simple(Persistent):
def __init__(self, name, **kw):
self.__name__ = name
self.__dict__.update(kw)
self._v_favorite_color = 'blue'
self._p_foo = 'bar'
@property
def _attrs(self):
return list(self.__dict__.keys())
def __eq__(self, other):
return cmpattrs(self, other, '__class__', *self._attrs) == 0
class Custom(Simple):
def __new__(cls, x, y):
r = Persistent.__new__(cls)
r.x, r.y = x, y
return r
def __init__(self, x, y):
self.a = 42
def __getnewargs__(self):
return self.x, self.y
def __getstate__(self):
return self.a
def __setstate__(self, a):
self.a = a
class Slotted(Persistent):
__slots__ = 's1', 's2', '_p_splat', '_v_eek'
def __init__(self, s1, s2):
self.s1, self.s2 = s1, s2
self._v_eek = 1
self._p_splat = 2
@property
def _attrs(self):
return list(self.__dict__.keys())
def __eq__(self, other):
return cmpattrs(self, other, '__class__', *self._attrs) == 0
class SubSlotted(Slotted):
__slots__ = 's3', 's4'
def __init__(self, s1, s2, s3):
Slotted.__init__(self, s1, s2)
self.s3 = s3
@property
def _attrs(self):
return ('s1', 's2', 's3', 's4')
class SubSubSlotted(SubSlotted):
def __init__(self, s1, s2, s3, **kw):
SubSlotted.__init__(self, s1, s2, s3)
self.__dict__.update(kw)
self._v_favorite_color = 'blue'
self._p_foo = 'bar'
@property
def _attrs(self):
return ['s1', 's2', 's3', 's4'] + list(self.__dict__.keys())
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