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Python Compiled Bytecode | 2005-10-18 | 37.1 KB | 1,416 lines

# Source Generated with Decompyle++
# File: in.pyc (Python 2.4)

'''Create portable serialized representations of Python objects.

See module cPickle for a (much) faster implementation.
See module copy_reg 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(string) -> object

Misc variables:

    __version__
    format_version
    compatible_formats

'''
__version__ = '$Revision: 1.158 $'
from types import *
from copy_reg import dispatch_table
from copy_reg import _extension_registry, _inverted_registry, _extension_cache
import marshal
import sys
import struct
import re
import warnings
__all__ = [
    'PickleError',
    'PicklingError',
    'UnpicklingError',
    'Pickler',
    'Unpickler',
    'dump',
    'dumps',
    'load',
    'loads']
format_version = '2.0'
compatible_formats = [
    '1.0',
    '1.1',
    '1.2',
    '1.3',
    '2.0']
HIGHEST_PROTOCOL = 2
mloads = marshal.loads

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


class _Stop(Exception):

    def __init__(self, value):
        self.value = value



try:
    from org.python.core import PyStringMap
except ImportError:
    PyStringMap = None


try:
    UnicodeType
except NameError:
    UnicodeType = None

MARK = '('
STOP = '.'
POP = '0'
POP_MARK = '1'
DUP = '2'
FLOAT = 'F'
INT = 'I'
BININT = 'J'
BININT1 = 'K'
LONG = 'L'
BININT2 = 'M'
NONE = 'N'
PERSID = 'P'
BINPERSID = 'Q'
REDUCE = 'R'
STRING = 'S'
BINSTRING = 'T'
SHORT_BINSTRING = 'U'
UNICODE = 'V'
BINUNICODE = 'X'
APPEND = 'a'
BUILD = 'b'
GLOBAL = 'c'
DICT = 'd'
EMPTY_DICT = '}'
APPENDS = 'e'
GET = 'g'
BINGET = 'h'
INST = 'i'
LONG_BINGET = 'j'
LIST = 'l'
EMPTY_LIST = ']'
OBJ = 'o'
PUT = 'p'
BINPUT = 'q'
LONG_BINPUT = 'r'
SETITEM = 's'
TUPLE = 't'
EMPTY_TUPLE = ')'
SETITEMS = 'u'
BINFLOAT = 'G'
TRUE = 'I01\n'
FALSE = 'I00\n'
PROTO = '\x80'
NEWOBJ = '\x81'
EXT1 = '\x82'
EXT2 = '\x83'
EXT4 = '\x84'
TUPLE1 = '\x85'
TUPLE2 = '\x86'
TUPLE3 = '\x87'
NEWTRUE = '\x88'
NEWFALSE = '\x89'
LONG1 = '\x8a'
LONG4 = '\x8b'
_tuplesize2code = [
    EMPTY_TUPLE,
    TUPLE1,
    TUPLE2,
    TUPLE3]
[]([] if re.match('[A-Z][A-Z0-9_]+$', x) else _[1])
del x

class Pickler:

    def __init__(self, file, protocol = None, bin = None):
        '''This takes a file-like object for writing a pickle data stream.

        The optional protocol argument tells the pickler to use the
        given protocol; supported protocols are 0, 1, 2.  The default
        protocol is 0, to be backwards compatible.  (Protocol 0 is the
        only protocol that can be written to a file opened in text
        mode and read back successfully.  When using a protocol higher
        than 0, make sure the file is opened in binary mode, both when
        pickling and unpickling.)

        Protocol 1 is more efficient than protocol 0; protocol 2 is
        more efficient than protocol 1.

        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 parameter must have a write() method that accepts a single
        string argument.  It can thus be an open file object, a StringIO
        object, or any other custom object that meets this interface.

        '''
        if protocol is not None and bin is not None:
            raise ValueError, "can't specify both 'protocol' and 'bin'"

        if bin is not None:
            warnings.warn("The 'bin' argument to Pickler() is deprecated", DeprecationWarning)
            protocol = bin

        if protocol is None:
            protocol = 0

        if protocol < 0:
            protocol = HIGHEST_PROTOCOL
        elif protocol <= protocol:
            pass
        elif not protocol <= HIGHEST_PROTOCOL:
            raise ValueError('pickle protocol must be <= %d' % HIGHEST_PROTOCOL)

        self.write = file.write
        self.memo = { }
        self.proto = int(protocol)
        self.bin = protocol >= 1
        self.fast = 0


    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.'''
        if self.proto >= 2:
            self.write(PROTO + chr(self.proto))

        self.save(obj)
        self.write(STOP)


    def memoize(self, obj):
        '''Store an object in the memo.'''
        if self.fast:
            return None

        if not id(obj) not in self.memo:
            raise AssertionError
        memo_len = len(self.memo)
        self.write(self.put(memo_len))
        self.memo[id(obj)] = (memo_len, obj)


    def put(self, i, pack = struct.pack):
        if self.bin:
            if i < 256:
                return BINPUT + chr(i)
            else:
                return LONG_BINPUT + pack('<i', i)

        return PUT + repr(i) + '\n'


    def get(self, i, pack = struct.pack):
        if self.bin:
            if i < 256:
                return BINGET + chr(i)
            else:
                return LONG_BINGET + pack('<i', i)

        return GET + repr(i) + '\n'


    def save(self, obj):
        pid = self.persistent_id(obj)
        if pid:
            self.save_pers(pid)
            return None

        x = self.memo.get(id(obj))
        if x:
            self.write(self.get(x[0]))
            return None

        t = type(obj)
        f = self.dispatch.get(t)
        if f:
            f(self, obj)
            return None


        try:
            issc = issubclass(t, TypeType)
        except TypeError:
            issc = 0

        if issc:
            self.save_global(obj)
            return None

        reduce = dispatch_table.get(t)
        if reduce:
            rv = reduce(obj)
        else:
            reduce = getattr(obj, '__reduce_ex__', None)
            if reduce:
                rv = reduce(self.proto)
            else:
                reduce = getattr(obj, '__reduce__', None)
                if reduce:
                    rv = reduce()
                else:
                    raise PicklingError("Can't pickle %r object: %r" % (t.__name__, obj))
        if type(rv) is StringType:
            self.save_global(obj, rv)
            return None

        if type(rv) is not TupleType:
            raise PicklingError('%s must return string or tuple' % reduce)

        l = len(rv)
        if l <= l:
            pass
        elif not l <= 5:
            raise PicklingError('Tuple returned by %s must have two to five elements' % reduce)

        self.save_reduce(obj = obj, *rv)


    def persistent_id(self, obj):
        pass


    def save_pers(self, pid):
        if self.bin:
            self.save(pid)
            self.write(BINPERSID)
        else:
            self.write(PERSID + str(pid) + '\n')


    def save_reduce(self, func, args, state = None, listitems = None, dictitems = None, obj = None):
        if not isinstance(args, TupleType):
            if args is None:
                warnings.warn('__basicnew__ special case is deprecated', DeprecationWarning)
            else:
                raise PicklingError('args from reduce() should be a tuple')

        if not callable(func):
            raise PicklingError('func from reduce should be callable')

        save = self.save
        write = self.write
        if self.proto >= 2 and getattr(func, '__name__', '') == '__newobj__':
            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:
            self.memoize(obj)

        if listitems is not None:
            self._batch_appends(listitems)

        if dictitems is not None:
            self._batch_setitems(dictitems)

        if state is not None:
            save(state)
            write(BUILD)


    dispatch = { }

    def save_none(self, obj):
        self.write(NONE)

    dispatch[NoneType] = save_none

    def save_bool(self, obj):
        if self.proto >= 2:
            if not obj or NEWTRUE:
                pass
            self.write(NEWFALSE)
        elif not obj or TRUE:
            pass
        self.write(FALSE)

    dispatch[bool] = save_bool

    def save_int(self, obj, pack = struct.pack):
        if self.bin:
            if obj >= 0:
                if obj <= 255:
                    self.write(BININT1 + chr(obj))
                    return None

                if obj <= 65535:
                    self.write('%c%c%c' % (BININT2, obj & 255, obj >> 8))
                    return None


            high_bits = obj >> 31
            if high_bits == 0 or high_bits == -1:
                self.write(BININT + pack('<i', obj))
                return None


        self.write(INT + repr(obj) + '\n')

    dispatch[IntType] = save_int

    def save_long(self, obj, pack = struct.pack):
        if self.proto >= 2:
            bytes = encode_long(obj)
            n = len(bytes)
            if n < 256:
                self.write(LONG1 + chr(n) + bytes)
            else:
                self.write(LONG4 + pack('<i', n) + bytes)
            return None

        self.write(LONG + repr(obj) + '\n')

    dispatch[LongType] = save_long

    def save_float(self, obj, pack = struct.pack):
        if self.bin:
            self.write(BINFLOAT + pack('>d', obj))
        else:
            self.write(FLOAT + repr(obj) + '\n')

    dispatch[FloatType] = save_float

    def save_string(self, obj, pack = struct.pack):
        if self.bin:
            n = len(obj)
            if n < 256:
                self.write(SHORT_BINSTRING + chr(n) + obj)
            else:
                self.write(BINSTRING + pack('<i', n) + obj)
        else:
            self.write(STRING + repr(obj) + '\n')
        self.memoize(obj)

    dispatch[StringType] = save_string

    def save_unicode(self, obj, pack = struct.pack):
        if self.bin:
            encoding = obj.encode('utf-8')
            n = len(encoding)
            self.write(BINUNICODE + pack('<i', n) + encoding)
        else:
            obj = obj.replace('\\', '\\u005c')
            obj = obj.replace('\n', '\\u000a')
            self.write(UNICODE + obj.encode('raw-unicode-escape') + '\n')
        self.memoize(obj)

    dispatch[UnicodeType] = save_unicode
    if StringType == UnicodeType:

        def save_string(self, obj, pack = struct.pack):
            unicode = obj.isunicode()
            if self.bin:
                if unicode:
                    obj = obj.encode('utf-8')

                l = len(obj)
                if l < 256 and not unicode:
                    self.write(SHORT_BINSTRING + chr(l) + obj)
                else:
                    s = pack('<i', l)
                    if unicode:
                        self.write(BINUNICODE + s + obj)
                    else:
                        self.write(BINSTRING + s + obj)
            elif unicode:
                obj = obj.replace('\\', '\\u005c')
                obj = obj.replace('\n', '\\u000a')
                obj = obj.encode('raw-unicode-escape')
                self.write(UNICODE + obj + '\n')
            else:
                self.write(STRING + repr(obj) + '\n')
            self.memoize(obj)

        dispatch[StringType] = save_string


    def save_tuple(self, obj):
        write = self.write
        proto = self.proto
        n = len(obj)
        if n == 0:
            if proto:
                write(EMPTY_TUPLE)
            else:
                write(MARK + TUPLE)
            return None

        save = self.save
        memo = self.memo
        if n <= 3 and proto >= 2:
            for element in obj:
                save(element)

            if id(obj) in memo:
                get = self.get(memo[id(obj)][0])
                write(POP * n + get)
            else:
                write(_tuplesize2code[n])
                self.memoize(obj)
            return None

        write(MARK)
        for element in obj:
            save(element)

        if id(obj) in memo:
            get = self.get(memo[id(obj)][0])
            if proto:
                write(POP_MARK + get)
            else:
                write(POP * (n + 1) + get)
            return None

        self.write(TUPLE)
        self.memoize(obj)

    dispatch[TupleType] = save_tuple

    def save_empty_tuple(self, obj):
        self.write(EMPTY_TUPLE)


    def save_list(self, obj):
        write = self.write
        if self.bin:
            write(EMPTY_LIST)
        else:
            write(MARK + LIST)
        self.memoize(obj)
        self._batch_appends(iter(obj))

    dispatch[ListType] = save_list
    _BATCHSIZE = 1000

    def _batch_appends(self, items):
        save = self.save
        write = self.write
        if not self.bin:
            for x in items:
                save(x)
                write(APPEND)

            return None

        r = xrange(self._BATCHSIZE)
        while items is not None:
            tmp = []
            for i in r:

                try:
                    x = items.next()
                    tmp.append(x)
                continue
                except StopIteration:
                    items = None
                    break
                    continue



            n = len(tmp)
            if n > 1:
                write(MARK)
                for x in tmp:
                    save(x)

                write(APPENDS)
                continue
            None<EXCEPTION MATCH>StopIteration
            if n:
                save(tmp[0])
                write(APPEND)
                continue


    def save_dict(self, obj):
        write = self.write
        if self.bin:
            write(EMPTY_DICT)
        else:
            write(MARK + DICT)
        self.memoize(obj)
        self._batch_setitems(obj.iteritems())

    dispatch[DictionaryType] = save_dict
    if PyStringMap is not None:
        dispatch[PyStringMap] = save_dict


    def _batch_setitems(self, items):
        save = self.save
        write = self.write
        if not self.bin:
            for k, v in items:
                save(k)
                save(v)
                write(SETITEM)

            return None

        r = xrange(self._BATCHSIZE)
        while items is not None:
            tmp = []
            for i in r:

                try:
                    tmp.append(items.next())
                continue
                except StopIteration:
                    items = None
                    break
                    continue



            n = len(tmp)
            if n > 1:
                write(MARK)
                for k, v in tmp:
                    save(k)
                    save(v)

                write(SETITEMS)
                continue
            None<EXCEPTION MATCH>StopIteration
            if n:
                (k, v) = tmp[0]
                save(k)
                save(v)
                write(SETITEM)
                continue


    def save_inst(self, obj):
        cls = obj.__class__
        memo = self.memo
        write = self.write
        save = self.save
        if hasattr(obj, '__getinitargs__'):
            args = obj.__getinitargs__()
            len(args)
            _keep_alive(args, memo)
        else:
            args = ()
        write(MARK)
        if self.bin:
            save(cls)
            for arg in args:
                save(arg)

            write(OBJ)
        else:
            for arg in args:
                save(arg)

            write(INST + cls.__module__ + '\n' + cls.__name__ + '\n')
        self.memoize(obj)

        try:
            getstate = obj.__getstate__
        except AttributeError:
            stuff = obj.__dict__

        stuff = getstate()
        _keep_alive(stuff, memo)
        save(stuff)
        write(BUILD)

    dispatch[InstanceType] = save_inst

    def save_global(self, obj, name = None, pack = struct.pack):
        write = self.write
        memo = self.memo
        if name is None:
            name = obj.__name__

        module = getattr(obj, '__module__', None)
        if module is None:
            module = whichmodule(obj, name)


        try:
            __import__(module)
            mod = sys.modules[module]
            klass = getattr(mod, name)
        except (ImportError, KeyError, AttributeError):
            raise PicklingError("Can't pickle %r: it's not found as %s.%s" % (obj, module, name))

        if klass is not obj:
            raise PicklingError("Can't pickle %r: it's not the same object as %s.%s" % (obj, module, name))

        if self.proto >= 2:
            code = _extension_registry.get((module, name))
            if code:
                if not code > 0:
                    raise AssertionError
                if code <= 255:
                    write(EXT1 + chr(code))
                elif code <= 65535:
                    write('%c%c%c' % (EXT2, code & 255, code >> 8))
                else:
                    write(EXT4 + pack('<i', code))
                return None


        write(GLOBAL + module + '\n' + name + '\n')
        self.memoize(obj)

    dispatch[ClassType] = save_global
    dispatch[FunctionType] = save_global
    dispatch[BuiltinFunctionType] = save_global
    dispatch[TypeType] = save_global


def _keep_alive(x, memo):
    '''Keeps a reference to the object x in the memo.

    Because we remember objects by their id, we have
    to assure that possibly temporary objects are kept
    alive by referencing them.
    We store a reference at the id of the memo, which should
    normally not be used unless someone tries to deepcopy
    the memo itself...
    '''

    try:
        memo[id(memo)].append(x)
    except KeyError:
        memo[id(memo)] = [
            x]


classmap = { }

def whichmodule(func, funcname):
    '''Figure out the module in which a function occurs.

    Search sys.modules for the module.
    Cache in classmap.
    Return a module name.
    If the function cannot be found, return "__main__".
    '''
    mod = getattr(func, '__module__', None)
    if mod is not None:
        return mod

    if func in classmap:
        return classmap[func]

    for name, module in sys.modules.items():
        if module is None:
            continue

        if name != '__main__' and getattr(module, funcname, None) is func:
            break
            continue
    else:
        name = '__main__'
    classmap[func] = name
    return name


class Unpickler:

    def __init__(self, file):
        '''This takes a file-like object for reading a pickle data stream.

        The protocol version of the pickle is detected automatically, so no
        proto argument is needed.

        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 a string.  Thus file-like
        object can be a file object opened for reading, a StringIO object,
        or any other custom object that meets this interface.
        '''
        self.readline = file.readline
        self.read = file.read
        self.memo = { }


    def load(self):
        '''Read a pickled object representation from the open file.

        Return the reconstituted object hierarchy specified in the file.
        '''
        self.mark = object()
        self.stack = []
        self.append = self.stack.append
        read = self.read
        dispatch = self.dispatch

        try:
            while None:
                key = read(1)
        except _Stop:
            stopinst = None
            return stopinst.value



    def marker(self):
        stack = self.stack
        mark = self.mark
        k = len(stack) - 1
        while stack[k] is not mark:
            k = k - 1
        return k

    dispatch = { }

    def load_eof(self):
        raise EOFError

    dispatch[''] = load_eof

    def load_proto(self):
        proto = ord(self.read(1))
        if proto <= proto:
            pass
        elif not proto <= 2:
            raise ValueError, 'unsupported pickle protocol: %d' % proto


    dispatch[PROTO] = load_proto

    def load_persid(self):
        pid = self.readline()[:-1]
        self.append(self.persistent_load(pid))

    dispatch[PERSID] = load_persid

    def load_binpersid(self):
        pid = self.stack.pop()
        self.append(self.persistent_load(pid))

    dispatch[BINPERSID] = load_binpersid

    def load_none(self):
        self.append(None)

    dispatch[NONE] = load_none

    def load_false(self):
        self.append(False)

    dispatch[NEWFALSE] = load_false

    def load_true(self):
        self.append(True)

    dispatch[NEWTRUE] = load_true

    def load_int(self):
        data = self.readline()
        if data == FALSE[1:]:
            val = False
        elif data == TRUE[1:]:
            val = True
        else:

            try:
                val = int(data)
            except ValueError:
                val = long(data)

        self.append(val)

    dispatch[INT] = load_int

    def load_binint(self):
        self.append(mloads('i' + self.read(4)))

    dispatch[BININT] = load_binint

    def load_binint1(self):
        self.append(ord(self.read(1)))

    dispatch[BININT1] = load_binint1

    def load_binint2(self):
        self.append(mloads('i' + self.read(2) + '\x00\x00'))

    dispatch[BININT2] = load_binint2

    def load_long(self):
        self.append(long(self.readline()[:-1], 0))

    dispatch[LONG] = load_long

    def load_long1(self):
        n = ord(self.read(1))
        bytes = self.read(n)
        self.append(decode_long(bytes))

    dispatch[LONG1] = load_long1

    def load_long4(self):
        n = mloads('i' + self.read(4))
        bytes = self.read(n)
        self.append(decode_long(bytes))

    dispatch[LONG4] = load_long4

    def load_float(self):
        self.append(float(self.readline()[:-1]))

    dispatch[FLOAT] = load_float

    def load_binfloat(self, unpack = struct.unpack):
        self.append(unpack('>d', self.read(8))[0])

    dispatch[BINFLOAT] = load_binfloat

    def load_string(self):
        rep = self.readline()[:-1]
        for q in '"\'':
            if rep.startswith(q):
                if not rep.endswith(q):
                    raise ValueError, 'insecure string pickle'

                rep = rep[len(q):-len(q)]
                break
                continue
        else:
            raise ValueError, 'insecure string pickle'
        self.append(rep.decode('string-escape'))

    dispatch[STRING] = load_string

    def load_binstring(self):
        len = mloads('i' + self.read(4))
        self.append(self.read(len))

    dispatch[BINSTRING] = load_binstring

    def load_unicode(self):
        self.append(unicode(self.readline()[:-1], 'raw-unicode-escape'))

    dispatch[UNICODE] = load_unicode

    def load_binunicode(self):
        len = mloads('i' + self.read(4))
        self.append(unicode(self.read(len), 'utf-8'))

    dispatch[BINUNICODE] = load_binunicode

    def load_short_binstring(self):
        len = ord(self.read(1))
        self.append(self.read(len))

    dispatch[SHORT_BINSTRING] = load_short_binstring

    def load_tuple(self):
        k = self.marker()
        self.stack[k:] = [
            tuple(self.stack[k + 1:])]

    dispatch[TUPLE] = load_tuple

    def load_empty_tuple(self):
        self.stack.append(())

    dispatch[EMPTY_TUPLE] = load_empty_tuple

    def load_tuple1(self):
        self.stack[-1] = (self.stack[-1],)

    dispatch[TUPLE1] = load_tuple1

    def load_tuple2(self):
        self.stack[-2:] = [
            (self.stack[-2], self.stack[-1])]

    dispatch[TUPLE2] = load_tuple2

    def load_tuple3(self):
        self.stack[-3:] = [
            (self.stack[-3], self.stack[-2], self.stack[-1])]

    dispatch[TUPLE3] = load_tuple3

    def load_empty_list(self):
        self.stack.append([])

    dispatch[EMPTY_LIST] = load_empty_list

    def load_empty_dictionary(self):
        self.stack.append({ })

    dispatch[EMPTY_DICT] = load_empty_dictionary

    def load_list(self):
        k = self.marker()
        self.stack[k:] = [
            self.stack[k + 1:]]

    dispatch[LIST] = load_list

    def load_dict(self):
        k = self.marker()
        d = { }
        items = self.stack[k + 1:]
        for i in range(0, len(items), 2):
            key = items[i]
            value = items[i + 1]
            d[key] = value

        self.stack[k:] = [
            d]

    dispatch[DICT] = load_dict

    def _instantiate(self, klass, k):
        args = tuple(self.stack[k + 1:])
        del self.stack[k:]
        instantiated = 0
        if not args and type(klass) is ClassType and not hasattr(klass, '__getinitargs__'):

            try:
                value = _EmptyClass()
                value.__class__ = klass
                instantiated = 1
            except RuntimeError:
                pass
            except:
                None<EXCEPTION MATCH>RuntimeError


        None<EXCEPTION MATCH>RuntimeError
        if not instantiated:

            try:
                value = klass(*args)
            except TypeError:
                err = None
                raise TypeError, 'in constructor for %s: %s' % (klass.__name__, str(err)), sys.exc_info()[2]
            except:
                None<EXCEPTION MATCH>TypeError


        None<EXCEPTION MATCH>TypeError
        self.append(value)


    def load_inst(self):
        module = self.readline()[:-1]
        name = self.readline()[:-1]
        klass = self.find_class(module, name)
        self._instantiate(klass, self.marker())

    dispatch[INST] = load_inst

    def load_obj(self):
        k = self.marker()
        klass = self.stack.pop(k + 1)
        self._instantiate(klass, k)

    dispatch[OBJ] = load_obj

    def load_newobj(self):
        args = self.stack.pop()
        cls = self.stack[-1]
        obj = cls.__new__(cls, *args)
        self.stack[-1] = obj

    dispatch[NEWOBJ] = load_newobj

    def load_global(self):
        module = self.readline()[:-1]
        name = self.readline()[:-1]
        klass = self.find_class(module, name)
        self.append(klass)

    dispatch[GLOBAL] = load_global

    def load_ext1(self):
        code = ord(self.read(1))
        self.get_extension(code)

    dispatch[EXT1] = load_ext1

    def load_ext2(self):
        code = mloads('i' + self.read(2) + '\x00\x00')
        self.get_extension(code)

    dispatch[EXT2] = load_ext2

    def load_ext4(self):
        code = mloads('i' + self.read(4))
        self.get_extension(code)

    dispatch[EXT4] = load_ext4

    def get_extension(self, code):
        nil = []
        obj = _extension_cache.get(code, nil)
        if obj is not nil:
            self.append(obj)
            return None

        key = _inverted_registry.get(code)
        if not key:
            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):
        __import__(module)
        mod = sys.modules[module]
        klass = getattr(mod, name)
        return klass


    def load_reduce(self):
        stack = self.stack
        args = stack.pop()
        func = stack[-1]
        if args is None:
            warnings.warn('__basicnew__ special case is deprecated', DeprecationWarning)
            value = func.__basicnew__()
        else:
            value = func(*args)
        stack[-1] = value

    dispatch[REDUCE] = load_reduce

    def load_pop(self):
        del self.stack[-1]

    dispatch[POP] = load_pop

    def load_pop_mark(self):
        k = self.marker()
        del self.stack[k:]

    dispatch[POP_MARK] = load_pop_mark

    def load_dup(self):
        self.append(self.stack[-1])

    dispatch[DUP] = load_dup

    def load_get(self):
        self.append(self.memo[self.readline()[:-1]])

    dispatch[GET] = load_get

    def load_binget(self):
        i = ord(self.read(1))
        self.append(self.memo[repr(i)])

    dispatch[BINGET] = load_binget

    def load_long_binget(self):
        i = mloads('i' + self.read(4))
        self.append(self.memo[repr(i)])

    dispatch[LONG_BINGET] = load_long_binget

    def load_put(self):
        self.memo[self.readline()[:-1]] = self.stack[-1]

    dispatch[PUT] = load_put

    def load_binput(self):
        i = ord(self.read(1))
        self.memo[repr(i)] = self.stack[-1]

    dispatch[BINPUT] = load_binput

    def load_long_binput(self):
        i = mloads('i' + self.read(4))
        self.memo[repr(i)] = self.stack[-1]

    dispatch[LONG_BINPUT] = load_long_binput

    def load_append(self):
        stack = self.stack
        value = stack.pop()
        list = stack[-1]
        list.append(value)

    dispatch[APPEND] = load_append

    def load_appends(self):
        stack = self.stack
        mark = self.marker()
        list = stack[mark - 1]
        list.extend(stack[mark + 1:])
        del stack[mark:]

    dispatch[APPENDS] = load_appends

    def load_setitem(self):
        stack = self.stack
        value = stack.pop()
        key = stack.pop()
        dict = stack[-1]
        dict[key] = value

    dispatch[SETITEM] = load_setitem

    def load_setitems(self):
        stack = self.stack
        mark = self.marker()
        dict = stack[mark - 1]
        for i in range(mark + 1, len(stack), 2):
            dict[stack[i]] = stack[i + 1]

        del stack[mark:]

    dispatch[SETITEMS] = load_setitems

    def load_build(self):
        stack = self.stack
        state = stack.pop()
        inst = stack[-1]
        setstate = getattr(inst, '__setstate__', None)
        if setstate:
            setstate(state)
            return None

        slotstate = None
        if isinstance(state, tuple) and len(state) == 2:
            (state, slotstate) = state

        if state:

            try:
                inst.__dict__.update(state)
            except RuntimeError:
                for k, v in state.items():
                    setattr(inst, k, v)



        None<EXCEPTION MATCH>RuntimeError
        if slotstate:
            for k, v in slotstate.items():
                setattr(inst, k, v)



    dispatch[BUILD] = load_build

    def load_mark(self):
        self.append(self.mark)

    dispatch[MARK] = load_mark

    def load_stop(self):
        value = self.stack.pop()
        raise _Stop(value)

    dispatch[STOP] = load_stop


class _EmptyClass:
    pass

import binascii as _binascii

def encode_long(x):
    """Encode a long to a two's complement little-endian binary string.
    Note that 0L is a special case, returning an empty string, to save a
    byte in the LONG1 pickling context.

    >>> encode_long(0L)
    ''
    >>> encode_long(255L)
    '\\xff\\x00'
    >>> encode_long(32767L)
    '\\xff\\x7f'
    >>> encode_long(-256L)
    '\\x00\\xff'
    >>> encode_long(-32768L)
    '\\x00\\x80'
    >>> encode_long(-128L)
    '\\x80'
    >>> encode_long(127L)
    '\\x7f'
    >>>
    """
    if x == 0:
        return ''

    if x > 0:
        ashex = hex(x)
        if not ashex.startswith('0x'):
            raise AssertionError
        njunkchars = 2 + ashex.endswith('L')
        nibbles = len(ashex) - njunkchars
        if nibbles & 1:
            ashex = '0x0' + ashex[2:]
        elif int(ashex[2], 16) >= 8:
            ashex = '0x00' + ashex[2:]

    else:
        ashex = hex(-x)
        if not ashex.startswith('0x'):
            raise AssertionError
        njunkchars = 2 + ashex.endswith('L')
        nibbles = len(ashex) - njunkchars
        if nibbles & 1:
            nibbles += 1

        nbits = nibbles * 4
        x += 0x1L << nbits
        if not x > 0:
            raise AssertionError
        ashex = hex(x)
        njunkchars = 2 + ashex.endswith('L')
        newnibbles = len(ashex) - njunkchars
        if newnibbles < nibbles:
            ashex = '0x' + '0' * (nibbles - newnibbles) + ashex[2:]

        if int(ashex[2], 16) < 8:
            ashex = '0xff' + ashex[2:]

    if ashex.endswith('L'):
        ashex = ashex[2:-1]
    else:
        ashex = ashex[2:]
    if not len(ashex) & 1 == 0:
        raise AssertionError, (x, ashex)
    binary = _binascii.unhexlify(ashex)
    return binary[::-1]


def decode_long(data):
    '''Decode a long from a two\'s complement little-endian binary string.

    >>> decode_long(\'\')
    0L
    >>> decode_long("\\xff\\x00")
    255L
    >>> decode_long("\\xff\\x7f")
    32767L
    >>> decode_long("\\x00\\xff")
    -256L
    >>> decode_long("\\x00\\x80")
    -32768L
    >>> decode_long("\\x80")
    -128L
    >>> decode_long("\\x7f")
    127L
    '''
    nbytes = len(data)
    if nbytes == 0:
        return 0x0L

    ashex = _binascii.hexlify(data[::-1])
    n = long(ashex, 16)
    if data[-1] >= '\x80':
        n -= 0x1L << nbytes * 8

    return n


try:
    from cStringIO import StringIO
except ImportError:
    __all__.extend
    __all__.extend
    from StringIO import StringIO
except:
    __all__.extend


def dump(obj, file, protocol = None, bin = None):
    Pickler(file, protocol, bin).dump(obj)


def dumps(obj, protocol = None, bin = None):
    file = StringIO()
    Pickler(file, protocol, bin).dump(obj)
    return file.getvalue()


def load(file):
    return Unpickler(file).load()


def loads(str):
    file = StringIO(str)
    return Unpickler(file).load()


def _test():
    import doctest
    return doctest.testmod()

if __name__ == '__main__':
    _test()