Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/python3/lib/python3.9/pickle.py b/linux-x64/clang/python3/lib/python3.9/pickle.py
new file mode 100644
index 0000000..e63a8b6
--- /dev/null
+++ b/linux-x64/clang/python3/lib/python3.9/pickle.py
@@ -0,0 +1,1819 @@
+"""Create portable serialized representations of Python objects.
+
+See module copyreg for a mechanism for registering custom picklers.
+See module pickletools source for extensive comments.
+
+Classes:
+
+ Pickler
+ Unpickler
+
+Functions:
+
+ dump(object, file)
+ dumps(object) -> string
+ load(file) -> object
+ loads(bytes) -> object
+
+Misc variables:
+
+ __version__
+ format_version
+ compatible_formats
+
+"""
+
+from types import FunctionType
+from copyreg import dispatch_table
+from copyreg import _extension_registry, _inverted_registry, _extension_cache
+from itertools import islice
+from functools import partial
+import sys
+from sys import maxsize
+from struct import pack, unpack
+import re
+import io
+import codecs
+import _compat_pickle
+
+__all__ = ["PickleError", "PicklingError", "UnpicklingError", "Pickler",
+ "Unpickler", "dump", "dumps", "load", "loads"]
+
+try:
+ from _pickle import PickleBuffer
+ __all__.append("PickleBuffer")
+ _HAVE_PICKLE_BUFFER = True
+except ImportError:
+ _HAVE_PICKLE_BUFFER = False
+
+
+# Shortcut for use in isinstance testing
+bytes_types = (bytes, bytearray)
+
+# These are purely informational; no code uses these.
+format_version = "4.0" # File format version we write
+compatible_formats = ["1.0", # Original protocol 0
+ "1.1", # Protocol 0 with INST added
+ "1.2", # Original protocol 1
+ "1.3", # Protocol 1 with BINFLOAT added
+ "2.0", # Protocol 2
+ "3.0", # Protocol 3
+ "4.0", # Protocol 4
+ "5.0", # Protocol 5
+ ] # Old format versions we can read
+
+# This is the highest protocol number we know how to read.
+HIGHEST_PROTOCOL = 5
+
+# The protocol we write by default. May be less than HIGHEST_PROTOCOL.
+# Only bump this if the oldest still supported version of Python already
+# includes it.
+DEFAULT_PROTOCOL = 4
+
+class PickleError(Exception):
+ """A common base class for the other pickling exceptions."""
+ pass
+
+class PicklingError(PickleError):
+ """This exception is raised when an unpicklable object is passed to the
+ dump() method.
+
+ """
+ pass
+
+class UnpicklingError(PickleError):
+ """This exception is raised when there is a problem unpickling an object,
+ such as a security violation.
+
+ Note that other exceptions may also be raised during unpickling, including
+ (but not necessarily limited to) AttributeError, EOFError, ImportError,
+ and IndexError.
+
+ """
+ pass
+
+# An instance of _Stop is raised by Unpickler.load_stop() in response to
+# the STOP opcode, passing the object that is the result of unpickling.
+class _Stop(Exception):
+ def __init__(self, value):
+ self.value = value
+
+# Jython has PyStringMap; it's a dict subclass with string keys
+try:
+ from org.python.core import PyStringMap
+except ImportError:
+ PyStringMap = None
+
+# Pickle opcodes. See pickletools.py for extensive docs. The listing
+# here is in kind-of alphabetical order of 1-character pickle code.
+# pickletools groups them by purpose.
+
+MARK = b'(' # push special markobject on stack
+STOP = b'.' # every pickle ends with STOP
+POP = b'0' # discard topmost stack item
+POP_MARK = b'1' # discard stack top through topmost markobject
+DUP = b'2' # duplicate top stack item
+FLOAT = b'F' # push float object; decimal string argument
+INT = b'I' # push integer or bool; decimal string argument
+BININT = b'J' # push four-byte signed int
+BININT1 = b'K' # push 1-byte unsigned int
+LONG = b'L' # push long; decimal string argument
+BININT2 = b'M' # push 2-byte unsigned int
+NONE = b'N' # push None
+PERSID = b'P' # push persistent object; id is taken from string arg
+BINPERSID = b'Q' # " " " ; " " " " stack
+REDUCE = b'R' # apply callable to argtuple, both on stack
+STRING = b'S' # push string; NL-terminated string argument
+BINSTRING = b'T' # push string; counted binary string argument
+SHORT_BINSTRING= b'U' # " " ; " " " " < 256 bytes
+UNICODE = b'V' # push Unicode string; raw-unicode-escaped'd argument
+BINUNICODE = b'X' # " " " ; counted UTF-8 string argument
+APPEND = b'a' # append stack top to list below it
+BUILD = b'b' # call __setstate__ or __dict__.update()
+GLOBAL = b'c' # push self.find_class(modname, name); 2 string args
+DICT = b'd' # build a dict from stack items
+EMPTY_DICT = b'}' # push empty dict
+APPENDS = b'e' # extend list on stack by topmost stack slice
+GET = b'g' # push item from memo on stack; index is string arg
+BINGET = b'h' # " " " " " " ; " " 1-byte arg
+INST = b'i' # build & push class instance
+LONG_BINGET = b'j' # push item from memo on stack; index is 4-byte arg
+LIST = b'l' # build list from topmost stack items
+EMPTY_LIST = b']' # push empty list
+OBJ = b'o' # build & push class instance
+PUT = b'p' # store stack top in memo; index is string arg
+BINPUT = b'q' # " " " " " ; " " 1-byte arg
+LONG_BINPUT = b'r' # " " " " " ; " " 4-byte arg
+SETITEM = b's' # add key+value pair to dict
+TUPLE = b't' # build tuple from topmost stack items
+EMPTY_TUPLE = b')' # push empty tuple
+SETITEMS = b'u' # modify dict by adding topmost key+value pairs
+BINFLOAT = b'G' # push float; arg is 8-byte float encoding
+
+TRUE = b'I01\n' # not an opcode; see INT docs in pickletools.py
+FALSE = b'I00\n' # not an opcode; see INT docs in pickletools.py
+
+# Protocol 2
+
+PROTO = b'\x80' # identify pickle protocol
+NEWOBJ = b'\x81' # build object by applying cls.__new__ to argtuple
+EXT1 = b'\x82' # push object from extension registry; 1-byte index
+EXT2 = b'\x83' # ditto, but 2-byte index
+EXT4 = b'\x84' # ditto, but 4-byte index
+TUPLE1 = b'\x85' # build 1-tuple from stack top
+TUPLE2 = b'\x86' # build 2-tuple from two topmost stack items
+TUPLE3 = b'\x87' # build 3-tuple from three topmost stack items
+NEWTRUE = b'\x88' # push True
+NEWFALSE = b'\x89' # push False
+LONG1 = b'\x8a' # push long from < 256 bytes
+LONG4 = b'\x8b' # push really big long
+
+_tuplesize2code = [EMPTY_TUPLE, TUPLE1, TUPLE2, TUPLE3]
+
+# Protocol 3 (Python 3.x)
+
+BINBYTES = b'B' # push bytes; counted binary string argument
+SHORT_BINBYTES = b'C' # " " ; " " " " < 256 bytes
+
+# Protocol 4
+
+SHORT_BINUNICODE = b'\x8c' # push short string; UTF-8 length < 256 bytes
+BINUNICODE8 = b'\x8d' # push very long string
+BINBYTES8 = b'\x8e' # push very long bytes string
+EMPTY_SET = b'\x8f' # push empty set on the stack
+ADDITEMS = b'\x90' # modify set by adding topmost stack items
+FROZENSET = b'\x91' # build frozenset from topmost stack items
+NEWOBJ_EX = b'\x92' # like NEWOBJ but work with keyword only arguments
+STACK_GLOBAL = b'\x93' # same as GLOBAL but using names on the stacks
+MEMOIZE = b'\x94' # store top of the stack in memo
+FRAME = b'\x95' # indicate the beginning of a new frame
+
+# Protocol 5
+
+BYTEARRAY8 = b'\x96' # push bytearray
+NEXT_BUFFER = b'\x97' # push next out-of-band buffer
+READONLY_BUFFER = b'\x98' # make top of stack readonly
+
+__all__.extend([x for x in dir() if re.match("[A-Z][A-Z0-9_]+$", x)])
+
+
+class _Framer:
+
+ _FRAME_SIZE_MIN = 4
+ _FRAME_SIZE_TARGET = 64 * 1024
+
+ def __init__(self, file_write):
+ self.file_write = file_write
+ self.current_frame = None
+
+ def start_framing(self):
+ self.current_frame = io.BytesIO()
+
+ def end_framing(self):
+ if self.current_frame and self.current_frame.tell() > 0:
+ self.commit_frame(force=True)
+ self.current_frame = None
+
+ def commit_frame(self, force=False):
+ if self.current_frame:
+ f = self.current_frame
+ if f.tell() >= self._FRAME_SIZE_TARGET or force:
+ data = f.getbuffer()
+ write = self.file_write
+ if len(data) >= self._FRAME_SIZE_MIN:
+ # Issue a single call to the write method of the underlying
+ # file object for the frame opcode with the size of the
+ # frame. The concatenation is expected to be less expensive
+ # than issuing an additional call to write.
+ write(FRAME + pack("<Q", len(data)))
+
+ # Issue a separate call to write to append the frame
+ # contents without concatenation to the above to avoid a
+ # memory copy.
+ write(data)
+
+ # Start the new frame with a new io.BytesIO instance so that
+ # the file object can have delayed access to the previous frame
+ # contents via an unreleased memoryview of the previous
+ # io.BytesIO instance.
+ self.current_frame = io.BytesIO()
+
+ def write(self, data):
+ if self.current_frame:
+ return self.current_frame.write(data)
+ else:
+ return self.file_write(data)
+
+ def write_large_bytes(self, header, payload):
+ write = self.file_write
+ if self.current_frame:
+ # Terminate the current frame and flush it to the file.
+ self.commit_frame(force=True)
+
+ # Perform direct write of the header and payload of the large binary
+ # object. Be careful not to concatenate the header and the payload
+ # prior to calling 'write' as we do not want to allocate a large
+ # temporary bytes object.
+ # We intentionally do not insert a protocol 4 frame opcode to make
+ # it possible to optimize file.read calls in the loader.
+ write(header)
+ write(payload)
+
+
+class _Unframer:
+
+ def __init__(self, file_read, file_readline, file_tell=None):
+ self.file_read = file_read
+ self.file_readline = file_readline
+ self.current_frame = None
+
+ def readinto(self, buf):
+ if self.current_frame:
+ n = self.current_frame.readinto(buf)
+ if n == 0 and len(buf) != 0:
+ self.current_frame = None
+ n = len(buf)
+ buf[:] = self.file_read(n)
+ return n
+ if n < len(buf):
+ raise UnpicklingError(
+ "pickle exhausted before end of frame")
+ return n
+ else:
+ n = len(buf)
+ buf[:] = self.file_read(n)
+ return n
+
+ def read(self, n):
+ if self.current_frame:
+ data = self.current_frame.read(n)
+ if not data and n != 0:
+ self.current_frame = None
+ return self.file_read(n)
+ if len(data) < n:
+ raise UnpicklingError(
+ "pickle exhausted before end of frame")
+ return data
+ else:
+ return self.file_read(n)
+
+ def readline(self):
+ if self.current_frame:
+ data = self.current_frame.readline()
+ if not data:
+ self.current_frame = None
+ return self.file_readline()
+ if data[-1] != b'\n'[0]:
+ raise UnpicklingError(
+ "pickle exhausted before end of frame")
+ return data
+ else:
+ return self.file_readline()
+
+ def load_frame(self, frame_size):
+ if self.current_frame and self.current_frame.read() != b'':
+ raise UnpicklingError(
+ "beginning of a new frame before end of current frame")
+ self.current_frame = io.BytesIO(self.file_read(frame_size))
+
+
+# Tools used for pickling.
+
+def _getattribute(obj, name):
+ for subpath in name.split('.'):
+ if subpath == '<locals>':
+ raise AttributeError("Can't get local attribute {!r} on {!r}"
+ .format(name, obj))
+ try:
+ parent = obj
+ obj = getattr(obj, subpath)
+ except AttributeError:
+ raise AttributeError("Can't get attribute {!r} on {!r}"
+ .format(name, obj)) from None
+ return obj, parent
+
+def whichmodule(obj, name):
+ """Find the module an object belong to."""
+ module_name = getattr(obj, '__module__', None)
+ if module_name is not None:
+ return module_name
+ # Protect the iteration by using a list copy of sys.modules against dynamic
+ # modules that trigger imports of other modules upon calls to getattr.
+ for module_name, module in sys.modules.copy().items():
+ if (module_name == '__main__'
+ or module_name == '__mp_main__' # bpo-42406
+ or module is None):
+ continue
+ try:
+ if _getattribute(module, name)[0] is obj:
+ return module_name
+ except AttributeError:
+ pass
+ return '__main__'
+
+def encode_long(x):
+ r"""Encode a long to a two's complement little-endian binary string.
+ Note that 0 is a special case, returning an empty string, to save a
+ byte in the LONG1 pickling context.
+
+ >>> encode_long(0)
+ b''
+ >>> encode_long(255)
+ b'\xff\x00'
+ >>> encode_long(32767)
+ b'\xff\x7f'
+ >>> encode_long(-256)
+ b'\x00\xff'
+ >>> encode_long(-32768)
+ b'\x00\x80'
+ >>> encode_long(-128)
+ b'\x80'
+ >>> encode_long(127)
+ b'\x7f'
+ >>>
+ """
+ if x == 0:
+ return b''
+ nbytes = (x.bit_length() >> 3) + 1
+ result = x.to_bytes(nbytes, byteorder='little', signed=True)
+ if x < 0 and nbytes > 1:
+ if result[-1] == 0xff and (result[-2] & 0x80) != 0:
+ result = result[:-1]
+ return result
+
+def decode_long(data):
+ r"""Decode a long from a two's complement little-endian binary string.
+
+ >>> decode_long(b'')
+ 0
+ >>> decode_long(b"\xff\x00")
+ 255
+ >>> decode_long(b"\xff\x7f")
+ 32767
+ >>> decode_long(b"\x00\xff")
+ -256
+ >>> decode_long(b"\x00\x80")
+ -32768
+ >>> decode_long(b"\x80")
+ -128
+ >>> decode_long(b"\x7f")
+ 127
+ """
+ return int.from_bytes(data, byteorder='little', signed=True)
+
+
+# Pickling machinery
+
+class _Pickler:
+
+ def __init__(self, file, protocol=None, *, fix_imports=True,
+ buffer_callback=None):
+ """This takes a binary file for writing a pickle data stream.
+
+ The optional *protocol* argument tells the pickler to use the
+ given protocol; supported protocols are 0, 1, 2, 3, 4 and 5.
+ The default protocol is 4. It was introduced in Python 3.4, and
+ is incompatible with previous versions.
+
+ Specifying a negative protocol version selects the highest
+ protocol version supported. The higher the protocol used, the
+ more recent the version of Python needed to read the pickle
+ produced.
+
+ The *file* argument must have a write() method that accepts a
+ single bytes argument. It can thus be a file object opened for
+ binary writing, an io.BytesIO instance, or any other custom
+ object that meets this interface.
+
+ If *fix_imports* is True and *protocol* is less than 3, pickle
+ will try to map the new Python 3 names to the old module names
+ used in Python 2, so that the pickle data stream is readable
+ with Python 2.
+
+ If *buffer_callback* is None (the default), buffer views are
+ serialized into *file* as part of the pickle stream.
+
+ If *buffer_callback* is not None, then it can be called any number
+ of times with a buffer view. If the callback returns a false value
+ (such as None), the given buffer is out-of-band; otherwise the
+ buffer is serialized in-band, i.e. inside the pickle stream.
+
+ It is an error if *buffer_callback* is not None and *protocol*
+ is None or smaller than 5.
+ """
+ if protocol is None:
+ protocol = DEFAULT_PROTOCOL
+ if protocol < 0:
+ protocol = HIGHEST_PROTOCOL
+ elif not 0 <= protocol <= HIGHEST_PROTOCOL:
+ raise ValueError("pickle protocol must be <= %d" % HIGHEST_PROTOCOL)
+ if buffer_callback is not None and protocol < 5:
+ raise ValueError("buffer_callback needs protocol >= 5")
+ self._buffer_callback = buffer_callback
+ try:
+ self._file_write = file.write
+ except AttributeError:
+ raise TypeError("file must have a 'write' attribute")
+ self.framer = _Framer(self._file_write)
+ self.write = self.framer.write
+ self._write_large_bytes = self.framer.write_large_bytes
+ self.memo = {}
+ self.proto = int(protocol)
+ self.bin = protocol >= 1
+ self.fast = 0
+ self.fix_imports = fix_imports and protocol < 3
+
+ def clear_memo(self):
+ """Clears the pickler's "memo".
+
+ The memo is the data structure that remembers which objects the
+ pickler has already seen, so that shared or recursive objects
+ are pickled by reference and not by value. This method is
+ useful when re-using picklers.
+ """
+ self.memo.clear()
+
+ def dump(self, obj):
+ """Write a pickled representation of obj to the open file."""
+ # Check whether Pickler was initialized correctly. This is
+ # only needed to mimic the behavior of _pickle.Pickler.dump().
+ if not hasattr(self, "_file_write"):
+ raise PicklingError("Pickler.__init__() was not called by "
+ "%s.__init__()" % (self.__class__.__name__,))
+ if self.proto >= 2:
+ self.write(PROTO + pack("<B", self.proto))
+ if self.proto >= 4:
+ self.framer.start_framing()
+ self.save(obj)
+ self.write(STOP)
+ self.framer.end_framing()
+
+ def memoize(self, obj):
+ """Store an object in the memo."""
+
+ # The Pickler memo is a dictionary mapping object ids to 2-tuples
+ # that contain the Unpickler memo key and the object being memoized.
+ # The memo key is written to the pickle and will become
+ # the key in the Unpickler's memo. The object is stored in the
+ # Pickler memo so that transient objects are kept alive during
+ # pickling.
+
+ # The use of the Unpickler memo length as the memo key is just a
+ # convention. The only requirement is that the memo values be unique.
+ # But there appears no advantage to any other scheme, and this
+ # scheme allows the Unpickler memo to be implemented as a plain (but
+ # growable) array, indexed by memo key.
+ if self.fast:
+ return
+ assert id(obj) not in self.memo
+ idx = len(self.memo)
+ self.write(self.put(idx))
+ self.memo[id(obj)] = idx, obj
+
+ # Return a PUT (BINPUT, LONG_BINPUT) opcode string, with argument i.
+ def put(self, idx):
+ if self.proto >= 4:
+ return MEMOIZE
+ elif self.bin:
+ if idx < 256:
+ return BINPUT + pack("<B", idx)
+ else:
+ return LONG_BINPUT + pack("<I", idx)
+ else:
+ return PUT + repr(idx).encode("ascii") + b'\n'
+
+ # Return a GET (BINGET, LONG_BINGET) opcode string, with argument i.
+ def get(self, i):
+ if self.bin:
+ if i < 256:
+ return BINGET + pack("<B", i)
+ else:
+ return LONG_BINGET + pack("<I", i)
+
+ return GET + repr(i).encode("ascii") + b'\n'
+
+ def save(self, obj, save_persistent_id=True):
+ self.framer.commit_frame()
+
+ # Check for persistent id (defined by a subclass)
+ pid = self.persistent_id(obj)
+ if pid is not None and save_persistent_id:
+ self.save_pers(pid)
+ return
+
+ # Check the memo
+ x = self.memo.get(id(obj))
+ if x is not None:
+ self.write(self.get(x[0]))
+ return
+
+ rv = NotImplemented
+ reduce = getattr(self, "reducer_override", None)
+ if reduce is not None:
+ rv = reduce(obj)
+
+ if rv is NotImplemented:
+ # Check the type dispatch table
+ t = type(obj)
+ f = self.dispatch.get(t)
+ if f is not None:
+ f(self, obj) # Call unbound method with explicit self
+ return
+
+ # Check private dispatch table if any, or else
+ # copyreg.dispatch_table
+ reduce = getattr(self, 'dispatch_table', dispatch_table).get(t)
+ if reduce is not None:
+ rv = reduce(obj)
+ else:
+ # Check for a class with a custom metaclass; treat as regular
+ # class
+ if issubclass(t, type):
+ self.save_global(obj)
+ return
+
+ # Check for a __reduce_ex__ method, fall back to __reduce__
+ reduce = getattr(obj, "__reduce_ex__", None)
+ if reduce is not None:
+ rv = reduce(self.proto)
+ else:
+ reduce = getattr(obj, "__reduce__", None)
+ if reduce is not None:
+ rv = reduce()
+ else:
+ raise PicklingError("Can't pickle %r object: %r" %
+ (t.__name__, obj))
+
+ # Check for string returned by reduce(), meaning "save as global"
+ if isinstance(rv, str):
+ self.save_global(obj, rv)
+ return
+
+ # Assert that reduce() returned a tuple
+ if not isinstance(rv, tuple):
+ raise PicklingError("%s must return string or tuple" % reduce)
+
+ # Assert that it returned an appropriately sized tuple
+ l = len(rv)
+ if not (2 <= l <= 6):
+ raise PicklingError("Tuple returned by %s must have "
+ "two to six elements" % reduce)
+
+ # Save the reduce() output and finally memoize the object
+ self.save_reduce(obj=obj, *rv)
+
+ def persistent_id(self, obj):
+ # This exists so a subclass can override it
+ return None
+
+ def save_pers(self, pid):
+ # Save a persistent id reference
+ if self.bin:
+ self.save(pid, save_persistent_id=False)
+ self.write(BINPERSID)
+ else:
+ try:
+ self.write(PERSID + str(pid).encode("ascii") + b'\n')
+ except UnicodeEncodeError:
+ raise PicklingError(
+ "persistent IDs in protocol 0 must be ASCII strings")
+
+ def save_reduce(self, func, args, state=None, listitems=None,
+ dictitems=None, state_setter=None, obj=None):
+ # This API is called by some subclasses
+
+ if not isinstance(args, tuple):
+ raise PicklingError("args from save_reduce() must be a tuple")
+ if not callable(func):
+ raise PicklingError("func from save_reduce() must be callable")
+
+ save = self.save
+ write = self.write
+
+ func_name = getattr(func, "__name__", "")
+ if self.proto >= 2 and func_name == "__newobj_ex__":
+ cls, args, kwargs = args
+ if not hasattr(cls, "__new__"):
+ raise PicklingError("args[0] from {} args has no __new__"
+ .format(func_name))
+ if obj is not None and cls is not obj.__class__:
+ raise PicklingError("args[0] from {} args has the wrong class"
+ .format(func_name))
+ if self.proto >= 4:
+ save(cls)
+ save(args)
+ save(kwargs)
+ write(NEWOBJ_EX)
+ else:
+ func = partial(cls.__new__, cls, *args, **kwargs)
+ save(func)
+ save(())
+ write(REDUCE)
+ elif self.proto >= 2 and func_name == "__newobj__":
+ # A __reduce__ implementation can direct protocol 2 or newer to
+ # use the more efficient NEWOBJ opcode, while still
+ # allowing protocol 0 and 1 to work normally. For this to
+ # work, the function returned by __reduce__ should be
+ # called __newobj__, and its first argument should be a
+ # class. The implementation for __newobj__
+ # should be as follows, although pickle has no way to
+ # verify this:
+ #
+ # def __newobj__(cls, *args):
+ # return cls.__new__(cls, *args)
+ #
+ # Protocols 0 and 1 will pickle a reference to __newobj__,
+ # while protocol 2 (and above) will pickle a reference to
+ # cls, the remaining args tuple, and the NEWOBJ code,
+ # which calls cls.__new__(cls, *args) at unpickling time
+ # (see load_newobj below). If __reduce__ returns a
+ # three-tuple, the state from the third tuple item will be
+ # pickled regardless of the protocol, calling __setstate__
+ # at unpickling time (see load_build below).
+ #
+ # Note that no standard __newobj__ implementation exists;
+ # you have to provide your own. This is to enforce
+ # compatibility with Python 2.2 (pickles written using
+ # protocol 0 or 1 in Python 2.3 should be unpicklable by
+ # Python 2.2).
+ cls = args[0]
+ if not hasattr(cls, "__new__"):
+ raise PicklingError(
+ "args[0] from __newobj__ args has no __new__")
+ if obj is not None and cls is not obj.__class__:
+ raise PicklingError(
+ "args[0] from __newobj__ args has the wrong class")
+ args = args[1:]
+ save(cls)
+ save(args)
+ write(NEWOBJ)
+ else:
+ save(func)
+ save(args)
+ write(REDUCE)
+
+ if obj is not None:
+ # If the object is already in the memo, this means it is
+ # recursive. In this case, throw away everything we put on the
+ # stack, and fetch the object back from the memo.
+ if id(obj) in self.memo:
+ write(POP + self.get(self.memo[id(obj)][0]))
+ else:
+ self.memoize(obj)
+
+ # More new special cases (that work with older protocols as
+ # well): when __reduce__ returns a tuple with 4 or 5 items,
+ # the 4th and 5th item should be iterators that provide list
+ # items and dict items (as (key, value) tuples), or None.
+
+ if listitems is not None:
+ self._batch_appends(listitems)
+
+ if dictitems is not None:
+ self._batch_setitems(dictitems)
+
+ if state is not None:
+ if state_setter is None:
+ save(state)
+ write(BUILD)
+ else:
+ # If a state_setter is specified, call it instead of load_build
+ # to update obj's with its previous state.
+ # First, push state_setter and its tuple of expected arguments
+ # (obj, state) onto the stack.
+ save(state_setter)
+ save(obj) # simple BINGET opcode as obj is already memoized.
+ save(state)
+ write(TUPLE2)
+ # Trigger a state_setter(obj, state) function call.
+ write(REDUCE)
+ # The purpose of state_setter is to carry-out an
+ # inplace modification of obj. We do not care about what the
+ # method might return, so its output is eventually removed from
+ # the stack.
+ write(POP)
+
+ # Methods below this point are dispatched through the dispatch table
+
+ dispatch = {}
+
+ def save_none(self, obj):
+ self.write(NONE)
+ dispatch[type(None)] = save_none
+
+ def save_bool(self, obj):
+ if self.proto >= 2:
+ self.write(NEWTRUE if obj else NEWFALSE)
+ else:
+ self.write(TRUE if obj else FALSE)
+ dispatch[bool] = save_bool
+
+ def save_long(self, obj):
+ if self.bin:
+ # If the int is small enough to fit in a signed 4-byte 2's-comp
+ # format, we can store it more efficiently than the general
+ # case.
+ # First one- and two-byte unsigned ints:
+ if obj >= 0:
+ if obj <= 0xff:
+ self.write(BININT1 + pack("<B", obj))
+ return
+ if obj <= 0xffff:
+ self.write(BININT2 + pack("<H", obj))
+ return
+ # Next check for 4-byte signed ints:
+ if -0x80000000 <= obj <= 0x7fffffff:
+ self.write(BININT + pack("<i", obj))
+ return
+ if self.proto >= 2:
+ encoded = encode_long(obj)
+ n = len(encoded)
+ if n < 256:
+ self.write(LONG1 + pack("<B", n) + encoded)
+ else:
+ self.write(LONG4 + pack("<i", n) + encoded)
+ return
+ if -0x80000000 <= obj <= 0x7fffffff:
+ self.write(INT + repr(obj).encode("ascii") + b'\n')
+ else:
+ self.write(LONG + repr(obj).encode("ascii") + b'L\n')
+ dispatch[int] = save_long
+
+ def save_float(self, obj):
+ if self.bin:
+ self.write(BINFLOAT + pack('>d', obj))
+ else:
+ self.write(FLOAT + repr(obj).encode("ascii") + b'\n')
+ dispatch[float] = save_float
+
+ def save_bytes(self, obj):
+ if self.proto < 3:
+ if not obj: # bytes object is empty
+ self.save_reduce(bytes, (), obj=obj)
+ else:
+ self.save_reduce(codecs.encode,
+ (str(obj, 'latin1'), 'latin1'), obj=obj)
+ return
+ n = len(obj)
+ if n <= 0xff:
+ self.write(SHORT_BINBYTES + pack("<B", n) + obj)
+ elif n > 0xffffffff and self.proto >= 4:
+ self._write_large_bytes(BINBYTES8 + pack("<Q", n), obj)
+ elif n >= self.framer._FRAME_SIZE_TARGET:
+ self._write_large_bytes(BINBYTES + pack("<I", n), obj)
+ else:
+ self.write(BINBYTES + pack("<I", n) + obj)
+ self.memoize(obj)
+ dispatch[bytes] = save_bytes
+
+ def save_bytearray(self, obj):
+ if self.proto < 5:
+ if not obj: # bytearray is empty
+ self.save_reduce(bytearray, (), obj=obj)
+ else:
+ self.save_reduce(bytearray, (bytes(obj),), obj=obj)
+ return
+ n = len(obj)
+ if n >= self.framer._FRAME_SIZE_TARGET:
+ self._write_large_bytes(BYTEARRAY8 + pack("<Q", n), obj)
+ else:
+ self.write(BYTEARRAY8 + pack("<Q", n) + obj)
+ dispatch[bytearray] = save_bytearray
+
+ if _HAVE_PICKLE_BUFFER:
+ def save_picklebuffer(self, obj):
+ if self.proto < 5:
+ raise PicklingError("PickleBuffer can only pickled with "
+ "protocol >= 5")
+ with obj.raw() as m:
+ if not m.contiguous:
+ raise PicklingError("PickleBuffer can not be pickled when "
+ "pointing to a non-contiguous buffer")
+ in_band = True
+ if self._buffer_callback is not None:
+ in_band = bool(self._buffer_callback(obj))
+ if in_band:
+ # Write data in-band
+ # XXX The C implementation avoids a copy here
+ if m.readonly:
+ self.save_bytes(m.tobytes())
+ else:
+ self.save_bytearray(m.tobytes())
+ else:
+ # Write data out-of-band
+ self.write(NEXT_BUFFER)
+ if m.readonly:
+ self.write(READONLY_BUFFER)
+
+ dispatch[PickleBuffer] = save_picklebuffer
+
+ def save_str(self, obj):
+ if self.bin:
+ encoded = obj.encode('utf-8', 'surrogatepass')
+ n = len(encoded)
+ if n <= 0xff and self.proto >= 4:
+ self.write(SHORT_BINUNICODE + pack("<B", n) + encoded)
+ elif n > 0xffffffff and self.proto >= 4:
+ self._write_large_bytes(BINUNICODE8 + pack("<Q", n), encoded)
+ elif n >= self.framer._FRAME_SIZE_TARGET:
+ self._write_large_bytes(BINUNICODE + pack("<I", n), encoded)
+ else:
+ self.write(BINUNICODE + pack("<I", n) + encoded)
+ else:
+ obj = obj.replace("\\", "\\u005c")
+ obj = obj.replace("\0", "\\u0000")
+ obj = obj.replace("\n", "\\u000a")
+ obj = obj.replace("\r", "\\u000d")
+ obj = obj.replace("\x1a", "\\u001a") # EOF on DOS
+ self.write(UNICODE + obj.encode('raw-unicode-escape') +
+ b'\n')
+ self.memoize(obj)
+ dispatch[str] = save_str
+
+ def save_tuple(self, obj):
+ if not obj: # tuple is empty
+ if self.bin:
+ self.write(EMPTY_TUPLE)
+ else:
+ self.write(MARK + TUPLE)
+ return
+
+ n = len(obj)
+ save = self.save
+ memo = self.memo
+ if n <= 3 and self.proto >= 2:
+ for element in obj:
+ save(element)
+ # Subtle. Same as in the big comment below.
+ if id(obj) in memo:
+ get = self.get(memo[id(obj)][0])
+ self.write(POP * n + get)
+ else:
+ self.write(_tuplesize2code[n])
+ self.memoize(obj)
+ return
+
+ # proto 0 or proto 1 and tuple isn't empty, or proto > 1 and tuple
+ # has more than 3 elements.
+ write = self.write
+ write(MARK)
+ for element in obj:
+ save(element)
+
+ if id(obj) in memo:
+ # Subtle. d was not in memo when we entered save_tuple(), so
+ # the process of saving the tuple's elements must have saved
+ # the tuple itself: the tuple is recursive. The proper action
+ # now is to throw away everything we put on the stack, and
+ # simply GET the tuple (it's already constructed). This check
+ # could have been done in the "for element" loop instead, but
+ # recursive tuples are a rare thing.
+ get = self.get(memo[id(obj)][0])
+ if self.bin:
+ write(POP_MARK + get)
+ else: # proto 0 -- POP_MARK not available
+ write(POP * (n+1) + get)
+ return
+
+ # No recursion.
+ write(TUPLE)
+ self.memoize(obj)
+
+ dispatch[tuple] = save_tuple
+
+ def save_list(self, obj):
+ if self.bin:
+ self.write(EMPTY_LIST)
+ else: # proto 0 -- can't use EMPTY_LIST
+ self.write(MARK + LIST)
+
+ self.memoize(obj)
+ self._batch_appends(obj)
+
+ dispatch[list] = save_list
+
+ _BATCHSIZE = 1000
+
+ def _batch_appends(self, items):
+ # Helper to batch up APPENDS sequences
+ save = self.save
+ write = self.write
+
+ if not self.bin:
+ for x in items:
+ save(x)
+ write(APPEND)
+ return
+
+ it = iter(items)
+ while True:
+ tmp = list(islice(it, self._BATCHSIZE))
+ n = len(tmp)
+ if n > 1:
+ write(MARK)
+ for x in tmp:
+ save(x)
+ write(APPENDS)
+ elif n:
+ save(tmp[0])
+ write(APPEND)
+ # else tmp is empty, and we're done
+ if n < self._BATCHSIZE:
+ return
+
+ def save_dict(self, obj):
+ if self.bin:
+ self.write(EMPTY_DICT)
+ else: # proto 0 -- can't use EMPTY_DICT
+ self.write(MARK + DICT)
+
+ self.memoize(obj)
+ self._batch_setitems(obj.items())
+
+ dispatch[dict] = save_dict
+ if PyStringMap is not None:
+ dispatch[PyStringMap] = save_dict
+
+ def _batch_setitems(self, items):
+ # Helper to batch up SETITEMS sequences; proto >= 1 only
+ save = self.save
+ write = self.write
+
+ if not self.bin:
+ for k, v in items:
+ save(k)
+ save(v)
+ write(SETITEM)
+ return
+
+ it = iter(items)
+ while True:
+ tmp = list(islice(it, self._BATCHSIZE))
+ n = len(tmp)
+ if n > 1:
+ write(MARK)
+ for k, v in tmp:
+ save(k)
+ save(v)
+ write(SETITEMS)
+ elif n:
+ k, v = tmp[0]
+ save(k)
+ save(v)
+ write(SETITEM)
+ # else tmp is empty, and we're done
+ if n < self._BATCHSIZE:
+ return
+
+ def save_set(self, obj):
+ save = self.save
+ write = self.write
+
+ if self.proto < 4:
+ self.save_reduce(set, (list(obj),), obj=obj)
+ return
+
+ write(EMPTY_SET)
+ self.memoize(obj)
+
+ it = iter(obj)
+ while True:
+ batch = list(islice(it, self._BATCHSIZE))
+ n = len(batch)
+ if n > 0:
+ write(MARK)
+ for item in batch:
+ save(item)
+ write(ADDITEMS)
+ if n < self._BATCHSIZE:
+ return
+ dispatch[set] = save_set
+
+ def save_frozenset(self, obj):
+ save = self.save
+ write = self.write
+
+ if self.proto < 4:
+ self.save_reduce(frozenset, (list(obj),), obj=obj)
+ return
+
+ write(MARK)
+ for item in obj:
+ save(item)
+
+ if id(obj) in self.memo:
+ # If the object is already in the memo, this means it is
+ # recursive. In this case, throw away everything we put on the
+ # stack, and fetch the object back from the memo.
+ write(POP_MARK + self.get(self.memo[id(obj)][0]))
+ return
+
+ write(FROZENSET)
+ self.memoize(obj)
+ dispatch[frozenset] = save_frozenset
+
+ def save_global(self, obj, name=None):
+ write = self.write
+ memo = self.memo
+
+ if name is None:
+ name = getattr(obj, '__qualname__', None)
+ if name is None:
+ name = obj.__name__
+
+ module_name = whichmodule(obj, name)
+ try:
+ __import__(module_name, level=0)
+ module = sys.modules[module_name]
+ obj2, parent = _getattribute(module, name)
+ except (ImportError, KeyError, AttributeError):
+ raise PicklingError(
+ "Can't pickle %r: it's not found as %s.%s" %
+ (obj, module_name, name)) from None
+ else:
+ if obj2 is not obj:
+ raise PicklingError(
+ "Can't pickle %r: it's not the same object as %s.%s" %
+ (obj, module_name, name))
+
+ if self.proto >= 2:
+ code = _extension_registry.get((module_name, name))
+ if code:
+ assert code > 0
+ if code <= 0xff:
+ write(EXT1 + pack("<B", code))
+ elif code <= 0xffff:
+ write(EXT2 + pack("<H", code))
+ else:
+ write(EXT4 + pack("<i", code))
+ return
+ lastname = name.rpartition('.')[2]
+ if parent is module:
+ name = lastname
+ # Non-ASCII identifiers are supported only with protocols >= 3.
+ if self.proto >= 4:
+ self.save(module_name)
+ self.save(name)
+ write(STACK_GLOBAL)
+ elif parent is not module:
+ self.save_reduce(getattr, (parent, lastname))
+ elif self.proto >= 3:
+ write(GLOBAL + bytes(module_name, "utf-8") + b'\n' +
+ bytes(name, "utf-8") + b'\n')
+ else:
+ if self.fix_imports:
+ r_name_mapping = _compat_pickle.REVERSE_NAME_MAPPING
+ r_import_mapping = _compat_pickle.REVERSE_IMPORT_MAPPING
+ if (module_name, name) in r_name_mapping:
+ module_name, name = r_name_mapping[(module_name, name)]
+ elif module_name in r_import_mapping:
+ module_name = r_import_mapping[module_name]
+ try:
+ write(GLOBAL + bytes(module_name, "ascii") + b'\n' +
+ bytes(name, "ascii") + b'\n')
+ except UnicodeEncodeError:
+ raise PicklingError(
+ "can't pickle global identifier '%s.%s' using "
+ "pickle protocol %i" % (module, name, self.proto)) from None
+
+ self.memoize(obj)
+
+ def save_type(self, obj):
+ if obj is type(None):
+ return self.save_reduce(type, (None,), obj=obj)
+ elif obj is type(NotImplemented):
+ return self.save_reduce(type, (NotImplemented,), obj=obj)
+ elif obj is type(...):
+ return self.save_reduce(type, (...,), obj=obj)
+ return self.save_global(obj)
+
+ dispatch[FunctionType] = save_global
+ dispatch[type] = save_type
+
+
+# Unpickling machinery
+
+class _Unpickler:
+
+ def __init__(self, file, *, fix_imports=True,
+ encoding="ASCII", errors="strict", buffers=None):
+ """This takes a binary file for reading a pickle data stream.
+
+ The protocol version of the pickle is detected automatically, so
+ no proto argument is needed.
+
+ The argument *file* must have two methods, a read() method that
+ takes an integer argument, and a readline() method that requires
+ no arguments. Both methods should return bytes. Thus *file*
+ can be a binary file object opened for reading, an io.BytesIO
+ object, or any other custom object that meets this interface.
+
+ The file-like object must have two methods, a read() method
+ that takes an integer argument, and a readline() method that
+ requires no arguments. Both methods should return bytes.
+ Thus file-like object can be a binary file object opened for
+ reading, a BytesIO object, or any other custom object that
+ meets this interface.
+
+ If *buffers* is not None, it should be an iterable of buffer-enabled
+ objects that is consumed each time the pickle stream references
+ an out-of-band buffer view. Such buffers have been given in order
+ to the *buffer_callback* of a Pickler object.
+
+ If *buffers* is None (the default), then the buffers are taken
+ from the pickle stream, assuming they are serialized there.
+ It is an error for *buffers* to be None if the pickle stream
+ was produced with a non-None *buffer_callback*.
+
+ Other optional arguments are *fix_imports*, *encoding* and
+ *errors*, which are used to control compatibility support for
+ pickle stream generated by Python 2. If *fix_imports* is True,
+ pickle will try to map the old Python 2 names to the new names
+ used in Python 3. The *encoding* and *errors* tell pickle how
+ to decode 8-bit string instances pickled by Python 2; these
+ default to 'ASCII' and 'strict', respectively. *encoding* can be
+ 'bytes' to read theses 8-bit string instances as bytes objects.
+ """
+ self._buffers = iter(buffers) if buffers is not None else None
+ self._file_readline = file.readline
+ self._file_read = file.read
+ self.memo = {}
+ self.encoding = encoding
+ self.errors = errors
+ self.proto = 0
+ self.fix_imports = fix_imports
+
+ def load(self):
+ """Read a pickled object representation from the open file.
+
+ Return the reconstituted object hierarchy specified in the file.
+ """
+ # Check whether Unpickler was initialized correctly. This is
+ # only needed to mimic the behavior of _pickle.Unpickler.dump().
+ if not hasattr(self, "_file_read"):
+ raise UnpicklingError("Unpickler.__init__() was not called by "
+ "%s.__init__()" % (self.__class__.__name__,))
+ self._unframer = _Unframer(self._file_read, self._file_readline)
+ self.read = self._unframer.read
+ self.readinto = self._unframer.readinto
+ self.readline = self._unframer.readline
+ self.metastack = []
+ self.stack = []
+ self.append = self.stack.append
+ self.proto = 0
+ read = self.read
+ dispatch = self.dispatch
+ try:
+ while True:
+ key = read(1)
+ if not key:
+ raise EOFError
+ assert isinstance(key, bytes_types)
+ dispatch[key[0]](self)
+ except _Stop as stopinst:
+ return stopinst.value
+
+ # Return a list of items pushed in the stack after last MARK instruction.
+ def pop_mark(self):
+ items = self.stack
+ self.stack = self.metastack.pop()
+ self.append = self.stack.append
+ return items
+
+ def persistent_load(self, pid):
+ raise UnpicklingError("unsupported persistent id encountered")
+
+ dispatch = {}
+
+ def load_proto(self):
+ proto = self.read(1)[0]
+ if not 0 <= proto <= HIGHEST_PROTOCOL:
+ raise ValueError("unsupported pickle protocol: %d" % proto)
+ self.proto = proto
+ dispatch[PROTO[0]] = load_proto
+
+ def load_frame(self):
+ frame_size, = unpack('<Q', self.read(8))
+ if frame_size > sys.maxsize:
+ raise ValueError("frame size > sys.maxsize: %d" % frame_size)
+ self._unframer.load_frame(frame_size)
+ dispatch[FRAME[0]] = load_frame
+
+ def load_persid(self):
+ try:
+ pid = self.readline()[:-1].decode("ascii")
+ except UnicodeDecodeError:
+ raise UnpicklingError(
+ "persistent IDs in protocol 0 must be ASCII strings")
+ self.append(self.persistent_load(pid))
+ dispatch[PERSID[0]] = load_persid
+
+ def load_binpersid(self):
+ pid = self.stack.pop()
+ self.append(self.persistent_load(pid))
+ dispatch[BINPERSID[0]] = load_binpersid
+
+ def load_none(self):
+ self.append(None)
+ dispatch[NONE[0]] = load_none
+
+ def load_false(self):
+ self.append(False)
+ dispatch[NEWFALSE[0]] = load_false
+
+ def load_true(self):
+ self.append(True)
+ dispatch[NEWTRUE[0]] = load_true
+
+ def load_int(self):
+ data = self.readline()
+ if data == FALSE[1:]:
+ val = False
+ elif data == TRUE[1:]:
+ val = True
+ else:
+ val = int(data, 0)
+ self.append(val)
+ dispatch[INT[0]] = load_int
+
+ def load_binint(self):
+ self.append(unpack('<i', self.read(4))[0])
+ dispatch[BININT[0]] = load_binint
+
+ def load_binint1(self):
+ self.append(self.read(1)[0])
+ dispatch[BININT1[0]] = load_binint1
+
+ def load_binint2(self):
+ self.append(unpack('<H', self.read(2))[0])
+ dispatch[BININT2[0]] = load_binint2
+
+ def load_long(self):
+ val = self.readline()[:-1]
+ if val and val[-1] == b'L'[0]:
+ val = val[:-1]
+ self.append(int(val, 0))
+ dispatch[LONG[0]] = load_long
+
+ def load_long1(self):
+ n = self.read(1)[0]
+ data = self.read(n)
+ self.append(decode_long(data))
+ dispatch[LONG1[0]] = load_long1
+
+ def load_long4(self):
+ n, = unpack('<i', self.read(4))
+ if n < 0:
+ # Corrupt or hostile pickle -- we never write one like this
+ raise UnpicklingError("LONG pickle has negative byte count")
+ data = self.read(n)
+ self.append(decode_long(data))
+ dispatch[LONG4[0]] = load_long4
+
+ def load_float(self):
+ self.append(float(self.readline()[:-1]))
+ dispatch[FLOAT[0]] = load_float
+
+ def load_binfloat(self):
+ self.append(unpack('>d', self.read(8))[0])
+ dispatch[BINFLOAT[0]] = load_binfloat
+
+ def _decode_string(self, value):
+ # Used to allow strings from Python 2 to be decoded either as
+ # bytes or Unicode strings. This should be used only with the
+ # STRING, BINSTRING and SHORT_BINSTRING opcodes.
+ if self.encoding == "bytes":
+ return value
+ else:
+ return value.decode(self.encoding, self.errors)
+
+ def load_string(self):
+ data = self.readline()[:-1]
+ # Strip outermost quotes
+ if len(data) >= 2 and data[0] == data[-1] and data[0] in b'"\'':
+ data = data[1:-1]
+ else:
+ raise UnpicklingError("the STRING opcode argument must be quoted")
+ self.append(self._decode_string(codecs.escape_decode(data)[0]))
+ dispatch[STRING[0]] = load_string
+
+ def load_binstring(self):
+ # Deprecated BINSTRING uses signed 32-bit length
+ len, = unpack('<i', self.read(4))
+ if len < 0:
+ raise UnpicklingError("BINSTRING pickle has negative byte count")
+ data = self.read(len)
+ self.append(self._decode_string(data))
+ dispatch[BINSTRING[0]] = load_binstring
+
+ def load_binbytes(self):
+ len, = unpack('<I', self.read(4))
+ if len > maxsize:
+ raise UnpicklingError("BINBYTES exceeds system's maximum size "
+ "of %d bytes" % maxsize)
+ self.append(self.read(len))
+ dispatch[BINBYTES[0]] = load_binbytes
+
+ def load_unicode(self):
+ self.append(str(self.readline()[:-1], 'raw-unicode-escape'))
+ dispatch[UNICODE[0]] = load_unicode
+
+ def load_binunicode(self):
+ len, = unpack('<I', self.read(4))
+ if len > maxsize:
+ raise UnpicklingError("BINUNICODE exceeds system's maximum size "
+ "of %d bytes" % maxsize)
+ self.append(str(self.read(len), 'utf-8', 'surrogatepass'))
+ dispatch[BINUNICODE[0]] = load_binunicode
+
+ def load_binunicode8(self):
+ len, = unpack('<Q', self.read(8))
+ if len > maxsize:
+ raise UnpicklingError("BINUNICODE8 exceeds system's maximum size "
+ "of %d bytes" % maxsize)
+ self.append(str(self.read(len), 'utf-8', 'surrogatepass'))
+ dispatch[BINUNICODE8[0]] = load_binunicode8
+
+ def load_binbytes8(self):
+ len, = unpack('<Q', self.read(8))
+ if len > maxsize:
+ raise UnpicklingError("BINBYTES8 exceeds system's maximum size "
+ "of %d bytes" % maxsize)
+ self.append(self.read(len))
+ dispatch[BINBYTES8[0]] = load_binbytes8
+
+ def load_bytearray8(self):
+ len, = unpack('<Q', self.read(8))
+ if len > maxsize:
+ raise UnpicklingError("BYTEARRAY8 exceeds system's maximum size "
+ "of %d bytes" % maxsize)
+ b = bytearray(len)
+ self.readinto(b)
+ self.append(b)
+ dispatch[BYTEARRAY8[0]] = load_bytearray8
+
+ def load_next_buffer(self):
+ if self._buffers is None:
+ raise UnpicklingError("pickle stream refers to out-of-band data "
+ "but no *buffers* argument was given")
+ try:
+ buf = next(self._buffers)
+ except StopIteration:
+ raise UnpicklingError("not enough out-of-band buffers")
+ self.append(buf)
+ dispatch[NEXT_BUFFER[0]] = load_next_buffer
+
+ def load_readonly_buffer(self):
+ buf = self.stack[-1]
+ with memoryview(buf) as m:
+ if not m.readonly:
+ self.stack[-1] = m.toreadonly()
+ dispatch[READONLY_BUFFER[0]] = load_readonly_buffer
+
+ def load_short_binstring(self):
+ len = self.read(1)[0]
+ data = self.read(len)
+ self.append(self._decode_string(data))
+ dispatch[SHORT_BINSTRING[0]] = load_short_binstring
+
+ def load_short_binbytes(self):
+ len = self.read(1)[0]
+ self.append(self.read(len))
+ dispatch[SHORT_BINBYTES[0]] = load_short_binbytes
+
+ def load_short_binunicode(self):
+ len = self.read(1)[0]
+ self.append(str(self.read(len), 'utf-8', 'surrogatepass'))
+ dispatch[SHORT_BINUNICODE[0]] = load_short_binunicode
+
+ def load_tuple(self):
+ items = self.pop_mark()
+ self.append(tuple(items))
+ dispatch[TUPLE[0]] = load_tuple
+
+ def load_empty_tuple(self):
+ self.append(())
+ dispatch[EMPTY_TUPLE[0]] = load_empty_tuple
+
+ def load_tuple1(self):
+ self.stack[-1] = (self.stack[-1],)
+ dispatch[TUPLE1[0]] = load_tuple1
+
+ def load_tuple2(self):
+ self.stack[-2:] = [(self.stack[-2], self.stack[-1])]
+ dispatch[TUPLE2[0]] = load_tuple2
+
+ def load_tuple3(self):
+ self.stack[-3:] = [(self.stack[-3], self.stack[-2], self.stack[-1])]
+ dispatch[TUPLE3[0]] = load_tuple3
+
+ def load_empty_list(self):
+ self.append([])
+ dispatch[EMPTY_LIST[0]] = load_empty_list
+
+ def load_empty_dictionary(self):
+ self.append({})
+ dispatch[EMPTY_DICT[0]] = load_empty_dictionary
+
+ def load_empty_set(self):
+ self.append(set())
+ dispatch[EMPTY_SET[0]] = load_empty_set
+
+ def load_frozenset(self):
+ items = self.pop_mark()
+ self.append(frozenset(items))
+ dispatch[FROZENSET[0]] = load_frozenset
+
+ def load_list(self):
+ items = self.pop_mark()
+ self.append(items)
+ dispatch[LIST[0]] = load_list
+
+ def load_dict(self):
+ items = self.pop_mark()
+ d = {items[i]: items[i+1]
+ for i in range(0, len(items), 2)}
+ self.append(d)
+ dispatch[DICT[0]] = load_dict
+
+ # INST and OBJ differ only in how they get a class object. It's not
+ # only sensible to do the rest in a common routine, the two routines
+ # previously diverged and grew different bugs.
+ # klass is the class to instantiate, and k points to the topmost mark
+ # object, following which are the arguments for klass.__init__.
+ def _instantiate(self, klass, args):
+ if (args or not isinstance(klass, type) or
+ hasattr(klass, "__getinitargs__")):
+ try:
+ value = klass(*args)
+ except TypeError as err:
+ raise TypeError("in constructor for %s: %s" %
+ (klass.__name__, str(err)), sys.exc_info()[2])
+ else:
+ value = klass.__new__(klass)
+ self.append(value)
+
+ def load_inst(self):
+ module = self.readline()[:-1].decode("ascii")
+ name = self.readline()[:-1].decode("ascii")
+ klass = self.find_class(module, name)
+ self._instantiate(klass, self.pop_mark())
+ dispatch[INST[0]] = load_inst
+
+ def load_obj(self):
+ # Stack is ... markobject classobject arg1 arg2 ...
+ args = self.pop_mark()
+ cls = args.pop(0)
+ self._instantiate(cls, args)
+ dispatch[OBJ[0]] = load_obj
+
+ def load_newobj(self):
+ args = self.stack.pop()
+ cls = self.stack.pop()
+ obj = cls.__new__(cls, *args)
+ self.append(obj)
+ dispatch[NEWOBJ[0]] = load_newobj
+
+ def load_newobj_ex(self):
+ kwargs = self.stack.pop()
+ args = self.stack.pop()
+ cls = self.stack.pop()
+ obj = cls.__new__(cls, *args, **kwargs)
+ self.append(obj)
+ dispatch[NEWOBJ_EX[0]] = load_newobj_ex
+
+ def load_global(self):
+ module = self.readline()[:-1].decode("utf-8")
+ name = self.readline()[:-1].decode("utf-8")
+ klass = self.find_class(module, name)
+ self.append(klass)
+ dispatch[GLOBAL[0]] = load_global
+
+ def load_stack_global(self):
+ name = self.stack.pop()
+ module = self.stack.pop()
+ if type(name) is not str or type(module) is not str:
+ raise UnpicklingError("STACK_GLOBAL requires str")
+ self.append(self.find_class(module, name))
+ dispatch[STACK_GLOBAL[0]] = load_stack_global
+
+ def load_ext1(self):
+ code = self.read(1)[0]
+ self.get_extension(code)
+ dispatch[EXT1[0]] = load_ext1
+
+ def load_ext2(self):
+ code, = unpack('<H', self.read(2))
+ self.get_extension(code)
+ dispatch[EXT2[0]] = load_ext2
+
+ def load_ext4(self):
+ code, = unpack('<i', self.read(4))
+ self.get_extension(code)
+ dispatch[EXT4[0]] = load_ext4
+
+ def get_extension(self, code):
+ nil = []
+ obj = _extension_cache.get(code, nil)
+ if obj is not nil:
+ self.append(obj)
+ return
+ key = _inverted_registry.get(code)
+ if not key:
+ if code <= 0: # note that 0 is forbidden
+ # Corrupt or hostile pickle.
+ raise UnpicklingError("EXT specifies code <= 0")
+ raise ValueError("unregistered extension code %d" % code)
+ obj = self.find_class(*key)
+ _extension_cache[code] = obj
+ self.append(obj)
+
+ def find_class(self, module, name):
+ # Subclasses may override this.
+ sys.audit('pickle.find_class', module, name)
+ if self.proto < 3 and self.fix_imports:
+ if (module, name) in _compat_pickle.NAME_MAPPING:
+ module, name = _compat_pickle.NAME_MAPPING[(module, name)]
+ elif module in _compat_pickle.IMPORT_MAPPING:
+ module = _compat_pickle.IMPORT_MAPPING[module]
+ __import__(module, level=0)
+ if self.proto >= 4:
+ return _getattribute(sys.modules[module], name)[0]
+ else:
+ return getattr(sys.modules[module], name)
+
+ def load_reduce(self):
+ stack = self.stack
+ args = stack.pop()
+ func = stack[-1]
+ stack[-1] = func(*args)
+ dispatch[REDUCE[0]] = load_reduce
+
+ def load_pop(self):
+ if self.stack:
+ del self.stack[-1]
+ else:
+ self.pop_mark()
+ dispatch[POP[0]] = load_pop
+
+ def load_pop_mark(self):
+ self.pop_mark()
+ dispatch[POP_MARK[0]] = load_pop_mark
+
+ def load_dup(self):
+ self.append(self.stack[-1])
+ dispatch[DUP[0]] = load_dup
+
+ def load_get(self):
+ i = int(self.readline()[:-1])
+ try:
+ self.append(self.memo[i])
+ except KeyError:
+ msg = f'Memo value not found at index {i}'
+ raise UnpicklingError(msg) from None
+ dispatch[GET[0]] = load_get
+
+ def load_binget(self):
+ i = self.read(1)[0]
+ try:
+ self.append(self.memo[i])
+ except KeyError as exc:
+ msg = f'Memo value not found at index {i}'
+ raise UnpicklingError(msg) from None
+ dispatch[BINGET[0]] = load_binget
+
+ def load_long_binget(self):
+ i, = unpack('<I', self.read(4))
+ try:
+ self.append(self.memo[i])
+ except KeyError as exc:
+ msg = f'Memo value not found at index {i}'
+ raise UnpicklingError(msg) from None
+ dispatch[LONG_BINGET[0]] = load_long_binget
+
+ def load_put(self):
+ i = int(self.readline()[:-1])
+ if i < 0:
+ raise ValueError("negative PUT argument")
+ self.memo[i] = self.stack[-1]
+ dispatch[PUT[0]] = load_put
+
+ def load_binput(self):
+ i = self.read(1)[0]
+ if i < 0:
+ raise ValueError("negative BINPUT argument")
+ self.memo[i] = self.stack[-1]
+ dispatch[BINPUT[0]] = load_binput
+
+ def load_long_binput(self):
+ i, = unpack('<I', self.read(4))
+ if i > maxsize:
+ raise ValueError("negative LONG_BINPUT argument")
+ self.memo[i] = self.stack[-1]
+ dispatch[LONG_BINPUT[0]] = load_long_binput
+
+ def load_memoize(self):
+ memo = self.memo
+ memo[len(memo)] = self.stack[-1]
+ dispatch[MEMOIZE[0]] = load_memoize
+
+ def load_append(self):
+ stack = self.stack
+ value = stack.pop()
+ list = stack[-1]
+ list.append(value)
+ dispatch[APPEND[0]] = load_append
+
+ def load_appends(self):
+ items = self.pop_mark()
+ list_obj = self.stack[-1]
+ try:
+ extend = list_obj.extend
+ except AttributeError:
+ pass
+ else:
+ extend(items)
+ return
+ # Even if the PEP 307 requires extend() and append() methods,
+ # fall back on append() if the object has no extend() method
+ # for backward compatibility.
+ append = list_obj.append
+ for item in items:
+ append(item)
+ dispatch[APPENDS[0]] = load_appends
+
+ def load_setitem(self):
+ stack = self.stack
+ value = stack.pop()
+ key = stack.pop()
+ dict = stack[-1]
+ dict[key] = value
+ dispatch[SETITEM[0]] = load_setitem
+
+ def load_setitems(self):
+ items = self.pop_mark()
+ dict = self.stack[-1]
+ for i in range(0, len(items), 2):
+ dict[items[i]] = items[i + 1]
+ dispatch[SETITEMS[0]] = load_setitems
+
+ def load_additems(self):
+ items = self.pop_mark()
+ set_obj = self.stack[-1]
+ if isinstance(set_obj, set):
+ set_obj.update(items)
+ else:
+ add = set_obj.add
+ for item in items:
+ add(item)
+ dispatch[ADDITEMS[0]] = load_additems
+
+ def load_build(self):
+ stack = self.stack
+ state = stack.pop()
+ inst = stack[-1]
+ setstate = getattr(inst, "__setstate__", None)
+ if setstate is not None:
+ setstate(state)
+ return
+ slotstate = None
+ if isinstance(state, tuple) and len(state) == 2:
+ state, slotstate = state
+ if state:
+ inst_dict = inst.__dict__
+ intern = sys.intern
+ for k, v in state.items():
+ if type(k) is str:
+ inst_dict[intern(k)] = v
+ else:
+ inst_dict[k] = v
+ if slotstate:
+ for k, v in slotstate.items():
+ setattr(inst, k, v)
+ dispatch[BUILD[0]] = load_build
+
+ def load_mark(self):
+ self.metastack.append(self.stack)
+ self.stack = []
+ self.append = self.stack.append
+ dispatch[MARK[0]] = load_mark
+
+ def load_stop(self):
+ value = self.stack.pop()
+ raise _Stop(value)
+ dispatch[STOP[0]] = load_stop
+
+
+# Shorthands
+
+def _dump(obj, file, protocol=None, *, fix_imports=True, buffer_callback=None):
+ _Pickler(file, protocol, fix_imports=fix_imports,
+ buffer_callback=buffer_callback).dump(obj)
+
+def _dumps(obj, protocol=None, *, fix_imports=True, buffer_callback=None):
+ f = io.BytesIO()
+ _Pickler(f, protocol, fix_imports=fix_imports,
+ buffer_callback=buffer_callback).dump(obj)
+ res = f.getvalue()
+ assert isinstance(res, bytes_types)
+ return res
+
+def _load(file, *, fix_imports=True, encoding="ASCII", errors="strict",
+ buffers=None):
+ return _Unpickler(file, fix_imports=fix_imports, buffers=buffers,
+ encoding=encoding, errors=errors).load()
+
+def _loads(s, /, *, fix_imports=True, encoding="ASCII", errors="strict",
+ buffers=None):
+ if isinstance(s, str):
+ raise TypeError("Can't load pickle from unicode string")
+ file = io.BytesIO(s)
+ return _Unpickler(file, fix_imports=fix_imports, buffers=buffers,
+ encoding=encoding, errors=errors).load()
+
+# Use the faster _pickle if possible
+try:
+ from _pickle import (
+ PickleError,
+ PicklingError,
+ UnpicklingError,
+ Pickler,
+ Unpickler,
+ dump,
+ dumps,
+ load,
+ loads
+ )
+except ImportError:
+ Pickler, Unpickler = _Pickler, _Unpickler
+ dump, dumps, load, loads = _dump, _dumps, _load, _loads
+
+# Doctest
+def _test():
+ import doctest
+ return doctest.testmod()
+
+if __name__ == "__main__":
+ import argparse
+ parser = argparse.ArgumentParser(
+ description='display contents of the pickle files')
+ parser.add_argument(
+ 'pickle_file', type=argparse.FileType('br'),
+ nargs='*', help='the pickle file')
+ parser.add_argument(
+ '-t', '--test', action='store_true',
+ help='run self-test suite')
+ parser.add_argument(
+ '-v', action='store_true',
+ help='run verbosely; only affects self-test run')
+ args = parser.parse_args()
+ if args.test:
+ _test()
+ else:
+ if not args.pickle_file:
+ parser.print_help()
+ else:
+ import pprint
+ for f in args.pickle_file:
+ obj = load(f)
+ pprint.pprint(obj)