python类tproxy()的实例源码

def _init():
    global _installed
    global tb_set_next
    if _installed:
        return

    _installed = True
    import platform
    try:
        if platform.python_implementation() == 'CPython':
            tb_set_next = _init_ugly_crap()
    except Exception as exc:
        sys.stderr.write("Failed to initialize cpython support: {!r}".format(exc))

    try:
        from __pypy__ import tproxy
    except ImportError:
        tproxy = None

    if not tb_set_next and not tproxy:
        raise ImportError("Cannot use tblib. Runtime not supported.")
    _import_dump_load()
    install()

def _init():
    global _installed
    global tb_set_next
    if _installed:
        return

    _installed = True
    import platform
    try:
        if platform.python_implementation() == 'CPython':
            tb_set_next = _init_ugly_crap()
    except Exception as exc:
        sys.stderr.write("Failed to initialize cpython support: {!r}".format(exc))

    try:
        from __pypy__ import tproxy
    except ImportError:
        tproxy = None

    if not tb_set_next and not tproxy:
        raise ImportError("Cannot use tblib. Runtime not supported.")
    _import_dump_load()
    install()

def make_proxy(controller, type=_dummy, obj=_dummy):
    """ return a tranparent proxy controlled by the given
        'controller' callable.  The proxy will appear
        as a completely regular instance of the given
        type but all operations on it are send to the
        specified controller - which receives on
        ProxyOperation instance on each such call.
        A non-specified type will default to type(obj)
        if obj is specified.
    """
    if type is _dummy:
        if obj is _dummy:
            raise TypeError("you must specify a type or an instance obj of it")
        type = origtype(obj)
    def perform(opname, *args, **kwargs):
        operation = ProxyOperation(tp, obj, opname, args, kwargs)
        return controller(operation)
    tp = tproxy(type, perform)
    return tp

def _init():
    global _installed
    global tb_set_next
    if _installed:
        return

    _installed = True
    import platform
    try:
        if platform.python_implementation() == 'CPython':
            tb_set_next = _init_ugly_crap()
    except Exception as exc:
        sys.stderr.write("Failed to initialize cpython support: {!r}".format(exc))

    try:
        from __pypy__ import tproxy
    except ImportError:
        tproxy = None

    if not tb_set_next and not tproxy:
        raise ImportError("Cannot use tblib. Runtime not supported.")
    _import_dump_load()
    install()

def _init():
    global _installed
    global tb_set_next
    if _installed:
        return

    _installed = True
    import platform
    try:
        if platform.python_implementation() == 'CPython':
            tb_set_next = _init_ugly_crap()
    except Exception as exc:
        sys.stderr.write("Failed to initialize cpython support: {!r}".format(exc))

    try:
        from __pypy__ import tproxy
    except ImportError:
        tproxy = None

    if not tb_set_next and not tproxy:
        raise ImportError("Cannot use tblib. Runtime not supported.")
    _import_dump_load()
    install()

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def as_traceback(self):
        if tproxy:
            return tproxy(TracebackType, self.__tproxy_handler)
        elif tb_set_next:
            f_code = self.tb_frame.f_code
            code = compile('\n' * (self.tb_lineno - 1) + 'raise __traceback_maker', self.tb_frame.f_code.co_filename, 'exec')
            if PY3:
                code = CodeType(
                    0, 0,
                    f_code.co_nlocals, f_code.co_stacksize, f_code.co_flags,
                    code.co_code, code.co_consts, code.co_names, code.co_varnames,
                    f_code.co_filename, f_code.co_name,
                    code.co_firstlineno, b"",
                    (), ()
                )
            else:
                code = CodeType(
                    0,
                    f_code.co_nlocals, f_code.co_stacksize, f_code.co_flags,
                    code.co_code, code.co_consts, code.co_names, code.co_varnames,
                    f_code.co_filename.encode(), f_code.co_name.encode(),
                    code.co_firstlineno, b"",
                    (), ()
                )

            try:
                exec(code, self.tb_frame.f_globals, {})
            except:
                tb = sys.exc_info()[2].tb_next
                tb_set_next(tb, self.tb_next and self.tb_next.as_traceback())
                try:
                    return tb
                finally:
                    del tb
        else:
            raise RuntimeError("Cannot re-create traceback !")