def restore(self, obj):
"""
Restores a flattened object to its original python state.
Simply returns any of the basic builtin types
>>> u = Unpickler()
>>> u.restore('hello world')
'hello world'
>>> u.restore({'key': 'value'})
{'key': 'value'}
"""
self._push()
if has_tag(obj, tags.ID):
objNumber = obj[tags.ID]
try:
objRef = self._objs[objNumber]
except IndexError:
raise IndexError(
'Cannot find objRef %d in self._objs of len(%d), looking for obj %r'
% (objNumber, len(self._objs), obj))
poppedValue = self._pop(objRef)
return poppedValue
if has_tag(obj, tags.REF):
return self._pop(self._namedict.get(obj[tags.REF]))
if has_tag(obj, tags.TYPE):
typeref = loadclass(obj[tags.TYPE])
if not typeref:
return self._pop(obj)
return self._pop(typeref)
if has_tag(obj, tags.REPR):
return self._pop(loadrepr(obj[tags.REPR]))
if has_tag(obj, tags.OBJECT):
cls = loadclass(obj[tags.OBJECT])
if not cls:
return self._pop(obj)
# check custom handlers
HandlerClass = handlers.registry.get(cls)
if HandlerClass:
handler = HandlerClass(self)
return self._pop(handler.restore(obj))
try:
if hasattr(cls, '__new__'):
instance = cls.__new__(cls)
else:
instance = object.__new__(cls)
except TypeError:
# old-style classes
try:
instance = cls()
except TypeError:
# fail gracefully if the constructor requires arguments
self._mkref(obj)
return self._pop(obj)
# keep a obj->name mapping for use in the _isobjref() case
self._mkref(instance)
if hasattr(instance, '__setstate__') and has_tag(obj, tags.STATE):
state = self.restore(obj[tags.STATE])
instance.__setstate__(state)
return self._pop(instance)
for k, v in sorted(obj.iteritems(), key=operator.itemgetter(0)):
# ignore the reserved attribute
if k in tags.RESERVED:
continue
self._namestack.append(k)
# step into the namespace
value = self.restore(v)
if (util.is_noncomplex(instance)
or util.is_dictionary_subclass(instance)):
instance[k] = value
else:
setattr(instance, k, value)
# step out
self._namestack.pop()
# Handle list and set subclasses
if has_tag(obj, tags.SEQ):
if hasattr(instance, 'append'):
for v in obj[tags.SEQ]:
instance.append(self.restore(v))
if hasattr(instance, 'add'):
for v in obj[tags.SEQ]:
instance.add(self.restore(v))
return self._pop(instance)
if util.is_list(obj):
return self._pop([self.restore(v) for v in obj])
if has_tag(obj, tags.TUPLE):
return self._pop(tuple([self.restore(v) for v in obj[tags.TUPLE]]))
if has_tag(obj, tags.SET):
return self._pop(set([self.restore(v) for v in obj[tags.SET]]))
if util.is_dictionary(obj):
data = {}
for k, v in sorted(obj.iteritems(), key=operator.itemgetter(0)):
self._namestack.append(k)
data[k] = self.restore(v)
self._namestack.pop()
return self._pop(data)
return self._pop(obj)
import base64
import collections.abc
import io
import operator
import time
import types
import inspect
from music21.ext.jsonpickle import tags
from music21.ext.jsonpickle.compat import set, unicode, long, bytes, PY3
if not PY3:
import __builtin__ # @UnresolvedImport
SEQUENCES = (list, set, tuple)
SEQUENCES_SET = set(SEQUENCES)
PRIMITIVES = set((unicode, bool, float, int, long))
def is_type(obj):
"""Returns True is obj is a reference to a type.
>>> is_type(1)
False
>>> is_type(object)
True
>>> class Klass: pass
>>> is_type(Klass)
True
def _restore_set(self, obj):
return set([self._restore(v) for v in obj[tags.SET]])
"""The jsonpickle.tags module provides the custom tags used for pickling and unpickling Python objects. These tags are keys into the flattened dictionaries created by the Pickler class. The Unpickler uses these custom key names to identify dictionaries that need to be specially handled. """ from music21.ext.jsonpickle.compat import set ID = 'py/id' OBJECT = 'py/object' TYPE = 'py/type' REPR = 'py/repr' REF = 'py/ref' TUPLE = 'py/tuple' SET = 'py/set' SEQ = 'py/seq' STATE = 'py/state' # All reserved tag names RESERVED = set([OBJECT, TYPE, REPR, REF, TUPLE, SET, SEQ, STATE])
import base64
import collections.abc
import io
import operator
import time
import types
import inspect
from music21.ext.jsonpickle import tags
from music21.ext.jsonpickle.compat import set, unicode, long, bytes, PY3
if not PY3:
import __builtin__ # @UnresolvedImport
SEQUENCES = (list, set, tuple)
SEQUENCES_SET = set(SEQUENCES)
PRIMITIVES = set((unicode, bool, float, int, long))
def is_type(obj):
"""Returns True is obj is a reference to a type.
>>> is_type(1)
False
>>> is_type(object)
True
>>> class Klass: pass
>>> is_type(Klass)
True
def _restore_set(self, obj):
return set([self._restore(v) for v in obj[tags.SET]])
def restore(self, obj):
"""
Restores a flattened object to its original python state.
Simply returns any of the basic builtin types
>>> u = Unpickler()
>>> u.restore('hello world')
'hello world'
>>> u.restore({'key': 'value'})
{'key': 'value'}
"""
self._push()
if has_tag(obj, tags.ID):
objNumber = obj[tags.ID]
try:
objRef = self._objs[objNumber]
except IndexError:
raise IndexError('Cannot find objRef %d in self._objs of len(%d), looking for obj %r' % (objNumber, len(self._objs), obj))
poppedValue = self._pop(objRef)
return poppedValue
if has_tag(obj, tags.REF):
return self._pop(self._namedict.get(obj[tags.REF]))
if has_tag(obj, tags.TYPE):
typeref = loadclass(obj[tags.TYPE])
if not typeref:
return self._pop(obj)
return self._pop(typeref)
if has_tag(obj, tags.REPR):
return self._pop(loadrepr(obj[tags.REPR]))
if has_tag(obj, tags.OBJECT):
cls = loadclass(obj[tags.OBJECT])
if not cls:
return self._pop(obj)
# check custom handlers
HandlerClass = handlers.registry.get(cls)
if HandlerClass:
handler = HandlerClass(self)
return self._pop(handler.restore(obj))
try:
if hasattr(cls, '__new__'):
instance = cls.__new__(cls)
else:
instance = object.__new__(cls)
except TypeError:
# old-style classes
try:
instance = cls()
except TypeError:
# fail gracefully if the constructor requires arguments
self._mkref(obj)
return self._pop(obj)
# keep a obj->name mapping for use in the _isobjref() case
self._mkref(instance)
if hasattr(instance, '__setstate__') and has_tag(obj, tags.STATE):
state = self.restore(obj[tags.STATE])
instance.__setstate__(state)
return self._pop(instance)
for k, v in sorted(obj.iteritems(), key=operator.itemgetter(0)):
# ignore the reserved attribute
if k in tags.RESERVED:
continue
self._namestack.append(k)
# step into the namespace
value = self.restore(v)
if (util.is_noncomplex(instance) or
util.is_dictionary_subclass(instance)):
instance[k] = value
else:
setattr(instance, k, value)
# step out
self._namestack.pop()
# Handle list and set subclasses
if has_tag(obj, tags.SEQ):
if hasattr(instance, 'append'):
for v in obj[tags.SEQ]:
instance.append(self.restore(v))
if hasattr(instance, 'add'):
for v in obj[tags.SEQ]:
instance.add(self.restore(v))
return self._pop(instance)
if util.is_list(obj):
return self._pop([self.restore(v) for v in obj])
if has_tag(obj, tags.TUPLE):
return self._pop(tuple([self.restore(v) for v in obj[tags.TUPLE]]))
if has_tag(obj, tags.SET):
return self._pop(set([self.restore(v) for v in obj[tags.SET]]))
if util.is_dictionary(obj):
data = {}
for k, v in sorted(obj.iteritems(), key=operator.itemgetter(0)):
self._namestack.append(k)
data[k] = self.restore(v)
self._namestack.pop()
return self._pop(data)
return self._pop(obj)
OBJECT = 'py/object'
REDUCE = 'py/reduce'
REF = 'py/ref'
REPR = 'py/repr'
SEQ = 'py/seq'
SET = 'py/set'
STATE = 'py/state'
TUPLE = 'py/tuple'
TYPE = 'py/type'
# All reserved tag names
RESERVED = set([
BYTES,
FUNCTION,
ID,
INITARGS,
ITERATOR,
NEWARGS,
NEWARGSEX,
NEWOBJ,
OBJECT,
REDUCE,
REF,
REPR,
SEQ,
SET,
STATE,
TUPLE,
TYPE,
])
OBJECT = 'py/object'
REDUCE = 'py/reduce'
REF = 'py/ref'
REPR = 'py/repr'
SEQ = 'py/seq'
SET = 'py/set'
STATE = 'py/state'
TUPLE = 'py/tuple'
TYPE = 'py/type'
# All reserved tag names
RESERVED = set([
BYTES,
FUNCTION,
ID,
INITARGS,
ITERATOR,
NEWARGS,
NEWARGSEX,
NEWOBJ,
OBJECT,
REDUCE,
REF,
REPR,
SEQ,
SET,
STATE,
TUPLE,
TYPE,
])
