Gecko [ v99win.today ]

Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
rdtypes	[ DIR ]	drwxr-xr-x
__init__.py	1.56 KB	-rw-r--r--
_asyncbackend.py	1.53 KB	-rw-r--r--
_asyncio_backend.py	4.34 KB	-rw-r--r--
_curio_backend.py	3.33 KB	-rw-r--r--
_immutable_attr.py	2.92 KB	-rw-r--r--
_immutable_ctx.py	2.4 KB	-rw-r--r--
_trio_backend.py	3.68 KB	-rw-r--r--
asyncbackend.py	3 KB	-rw-r--r--
asyncquery.py	17.4 KB	-rw-r--r--
asyncresolver.py	8.71 KB	-rw-r--r--
dnssec.py	19.19 KB	-rw-r--r--
e164.py	3.6 KB	-rw-r--r--
edns.py	10.72 KB	-rw-r--r--
entropy.py	4.07 KB	-rw-r--r--
enum.py	2.75 KB	-rw-r--r--
exception.py	5.13 KB	-rw-r--r--
flags.py	2.58 KB	-rw-r--r--
grange.py	2.04 KB	-rw-r--r--
immutable.py	1.97 KB	-rw-r--r--
inet.py	4.74 KB	-rw-r--r--
ipv4.py	1.93 KB	-rw-r--r--
ipv6.py	5.92 KB	-rw-r--r--
message.py	52.73 KB	-rw-r--r--
name.py	31.54 KB	-rw-r--r--
namedict.py	3.83 KB	-rw-r--r--
node.py	6.42 KB	-rw-r--r--
opcode.py	2.58 KB	-rw-r--r--
py.typed	0 B	-rw-r--r--
query.py	40.46 KB	-rw-r--r--
rcode.py	3.9 KB	-rw-r--r--
rdata.py	24.32 KB	-rw-r--r--
rdataclass.py	2.81 KB	-rw-r--r--
rdataset.py	14.54 KB	-rw-r--r--
rdatatype.py	6.64 KB	-rw-r--r--
renderer.py	8.59 KB	-rw-r--r--
resolver.py	59.29 KB	-rw-r--r--
reversename.py	3.65 KB	-rw-r--r--
rrset.py	7.44 KB	-rw-r--r--
serial.py	3.53 KB	-rw-r--r--
set.py	7.64 KB	-rw-r--r--
tokenizer.py	21.86 KB	-rw-r--r--
transaction.py	16.93 KB	-rw-r--r--
tsig.py	10.93 KB	-rw-r--r--
tsigkeyring.py	2.43 KB	-rw-r--r--
ttl.py	2.58 KB	-rw-r--r--
update.py	10.55 KB	-rw-r--r--
version.py	1.55 KB	-rw-r--r--
versioned.py	15.91 KB	-rw-r--r--
wire.py	2.48 KB	-rw-r--r--
xfr.py	11.61 KB	-rw-r--r--
zone.py	34.25 KB	-rw-r--r--
zonefile.py	15.25 KB	-rw-r--r--

Code Editor : _immutable_attr.py

# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

# This implementation of the immutable decorator is for python 3.6,
# which doesn't have Context Variables.  This implementation is somewhat
# costly for classes with slots, as it adds a __dict__ to them.

import inspect

class _Immutable:
    """Immutable mixin class"""

# Note we MUST NOT have __slots__ as that causes
    #
    #    TypeError: multiple bases have instance lay-out conflict
    #
    # when we get mixed in with another class with slots.  When we
    # get mixed into something with slots, it effectively adds __dict__ to
    # the slots of the other class, which allows attribute setting to work,
    # albeit at the cost of the dictionary.

def __setattr__(self, name, value):
        if not hasattr(self, '_immutable_init') or \
           self._immutable_init is not self:
            raise TypeError("object doesn't support attribute assignment")
        else:
            super().__setattr__(name, value)

def __delattr__(self, name):
        if not hasattr(self, '_immutable_init') or \
           self._immutable_init is not self:
            raise TypeError("object doesn't support attribute assignment")
        else:
            super().__delattr__(name)

def _immutable_init(f):
    def nf(*args, **kwargs):
        try:
            # Are we already initializing an immutable class?
            previous = args[0]._immutable_init
        except AttributeError:
            # We are the first!
            previous = None
            object.__setattr__(args[0], '_immutable_init', args[0])
        try:
            # call the actual __init__
            f(*args, **kwargs)
        finally:
            if not previous:
                # If we started the initialzation, establish immutability
                # by removing the attribute that allows mutation
                object.__delattr__(args[0], '_immutable_init')
    nf.__signature__ = inspect.signature(f)
    return nf

def immutable(cls):
    if _Immutable in cls.__mro__:
        # Some ancestor already has the mixin, so just make sure we keep
        # following the __init__ protocol.
        cls.__init__ = _immutable_init(cls.__init__)
        if hasattr(cls, '__setstate__'):
            cls.__setstate__ = _immutable_init(cls.__setstate__)
        ncls = cls
    else:
        # Mixin the Immutable class and follow the __init__ protocol.
        class ncls(_Immutable, cls):

@_immutable_init
            def __init__(self, *args, **kwargs):
                super().__init__(*args, **kwargs)

if hasattr(cls, '__setstate__'):
                @_immutable_init
                def __setstate__(self, *args, **kwargs):
                    super().__setstate__(*args, **kwargs)

# make ncls have the same name and module as cls
        ncls.__name__ = cls.__name__
        ncls.__qualname__ = cls.__qualname__
        ncls.__module__ = cls.__module__
    return ncls

${this.title}

Code Editor : _immutable_attr.py