def recur_freeze_containers(mutable_obj, ignoredtypes=_PYTHON_PRIMITIVE_TYPES):
"""
dict -> namedtuple (!WARNING! keys can only be [a-zA-Z][a-zA-Z0-9_]*)
list -> tuple
set -> frozenset
"""
if is_mapping(mutable_obj):
copy = dict(mutable_obj)
items = copy.iteritems()
elif is_sequence(mutable_obj):
copy = list(mutable_obj)
items = zip(xrange(0, len(copy)), copy)
elif is_set(mutable_obj):
return frozenset(mutable_obj)
elif isinstance(mutable_obj, ignoredtypes):
return mutable_obj
else:
raise TypeError("Cannot freeze {!r} of unsupported data type {}".format(mutable_obj, type(mutable_obj)))
for k,v in items:
copy[k] = recur_freeze_containers(v, ignoredtypes)
if is_mapping(copy):
return _dict2NamedTuple(copy)
elif is_sequence(copy):
return tuple(copy)
def recur_unfreeze_containers(frozen_obj, ignoredtypes=_PYTHON_PRIMITIVE_TYPES):
"""
namedtuple -> dict
tuple -> list
frozenset -> set
"""
if hasattr(frozen_obj, '_asdict'):
new = frozen_obj._asdict()
items = new.iteritems()
elif is_sequence(frozen_obj):
new = list(frozen_obj)
items = zip(xrange(0, len(new)), new)
elif is_set(frozen_obj):
return set(frozen_obj)
elif isinstance(frozen_obj, ignoredtypes):
return frozen_obj
else:
raise TypeError("Cannot unfreeze {!r} of unsupported data type {}".format(frozen_obj, type(frozen_obj)))
for k,v in items:
new[k] = recur_unfreeze_containers(v, ignoredtypes)
return new
