def pickle_instance(obj, list, level=0, deepcopy=0):
"""Pickle the given object into a <PyObject>
Add XML tags to list. Level is indentation (for aesthetic reasons)
"""
# concept: to pickle an object, we pickle two things:
#
# 1. the object attributes (the "stuff")
# 2. initargs, if defined
#
# There is a twist to this -- instead of always putting the "stuff"
# into a container, we can make the elements of "stuff" first-level attributes,
# which gives a more natural-looking XML representation of the object.
#
# We only put the "stuff" into a container if we'll need to pass it
# later as an object to __setstate__.
# tests below are in same order as pickle.py, in case someone depends on that.
# note we save the special __getstate__ and __getinitargs__ objects in containers
# of the same name -- we know for sure that the object can't also have
# data attributes of that same name
# first, get the initargs, if present
try:
args = obj.__getinitargs__()
try:
len(args) # must be a sequence, from pickle.py
except:
raise XMLPicklingError, \
"__getinitargs__() must return a sequence"
except:
args = None
# next, decide what the "stuff" is
try:
stuff = obj.__getstate__()
except:
#stuff = obj.__dict__
stuff = attr_dict(obj)
# save initargs, if we have them
if args is not None:
# put them in an <attr name="__getinitargs__" ...> container
list.append(_attr_tag('__getinitargs__', args, level, deepcopy))
# decide how to save the "stuff", depending on whether we need
# to later grab it back as a single object
if not hasattr(obj, '__setstate__'):
if type(stuff) is DictType:
# don't need it as a single object - save keys/vals as
# first-level attributes
for key, val in stuff.items():
list.append(_attr_tag(key, val, level, deepcopy))
else:
raise XMLPicklingError, \
"__getstate__ must return a DictType here"
else:
# else, encapsulate the "stuff" in an <attr name="__getstate__" ...>
list.append(_attr_tag('__getstate__', stuff, level, deepcopy))
def pickle_instance(obj, list, level=0, deepcopy=0):
"""Pickle the given object into a <PyObject>
Add XML tags to list. Level is indentation (for aesthetic reasons)
"""
# concept: to pickle an object, we pickle two things:
#
# 1. the object attributes (the "stuff")
# 2. initargs, if defined
#
# There is a twist to this -- instead of always putting the "stuff"
# into a container, we can make the elements of "stuff" first-level attributes,
# which gives a more natural-looking XML representation of the object.
#
# We only put the "stuff" into a container if we'll need to pass it
# later as an object to __setstate__.
# tests below are in same order as pickle.py, in case someone depends on that.
# note we save the special __getstate__ and __getinitargs__ objects in containers
# of the same name -- we know for sure that the object can't also have
# data attributes of that same name
# first, get the initargs, if present
try:
args = obj.__getinitargs__()
try:
len(args) # must be a sequence, from pickle.py
except:
raise XMLPicklingError, \
"__getinitargs__() must return a sequence"
except:
args = None
# next, decide what the "stuff" is
try:
stuff = obj.__getstate__()
except:
#stuff = obj.__dict__
stuff = attr_dict(obj)
# save initargs, if we have them
if args is not None:
# put them in an <attr name="__getinitargs__" ...> container
list.append(_attr_tag('__getinitargs__', args, level, deepcopy))
# decide how to save the "stuff", depending on whether we need
# to later grab it back as a single object
if not hasattr(obj,'__setstate__'):
if type(stuff) is DictType:
# don't need it as a single object - save keys/vals as
# first-level attributes
for key,val in stuff.items():
list.append(_attr_tag(key, val, level, deepcopy))
else:
raise XMLPicklingError, \
"__getstate__ must return a DictType here"
else:
# else, encapsulate the "stuff" in an <attr name="__getstate__" ...>
list.append(_attr_tag('__getstate__', stuff, level, deepcopy))