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Refactor precomputed constants in the ipaddress module (suggested by Charles-François)
This commit is contained in:
Antoine Pitrou
parent
f573ce9135
commit
b19e75d0c0
1 changed files with 65 additions and 56 deletions
121
Lib/ipaddress.py
121
Lib/ipaddress.py
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@ -1325,7 +1325,7 @@ class IPv4Address(_BaseV4, _BaseAddress):
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reserved IPv4 Network range.
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"""
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return self in self._reserved_network
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return self in self._constants._reserved_network
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@property
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@functools.lru_cache()
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@ -1337,7 +1337,7 @@ class IPv4Address(_BaseV4, _BaseAddress):
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iana-ipv4-special-registry.
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"""
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return any(self in net for net in self._private_networks)
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return any(self in net for net in self._constants._private_networks)
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@property
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def is_multicast(self):
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@ -1348,7 +1348,7 @@ class IPv4Address(_BaseV4, _BaseAddress):
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See RFC 3171 for details.
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"""
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return self in self._multicast_network
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return self in self._constants._multicast_network
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@property
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def is_unspecified(self):
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@ -1359,7 +1359,7 @@ class IPv4Address(_BaseV4, _BaseAddress):
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RFC 5735 3.
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"""
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return self == self._unspecified_address
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return self == self._constants._unspecified_address
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@property
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def is_loopback(self):
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@ -1369,7 +1369,7 @@ class IPv4Address(_BaseV4, _BaseAddress):
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A boolean, True if the address is a loopback per RFC 3330.
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"""
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return self in self._loopback_network
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return self in self._constants._loopback_network
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@property
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def is_link_local(self):
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@ -1379,7 +1379,7 @@ class IPv4Address(_BaseV4, _BaseAddress):
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A boolean, True if the address is link-local per RFC 3927.
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"""
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return self in self._linklocal_network
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return self in self._constants._linklocal_network
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class IPv4Interface(IPv4Address):
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@ -1578,32 +1578,36 @@ class IPv4Network(_BaseV4, _BaseNetwork):
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not self.is_private)
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IPv4Address._linklocal_network = IPv4Network('169.254.0.0/16')
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class _IPv4Constants:
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_linklocal_network = IPv4Network('169.254.0.0/16')
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IPv4Address._loopback_network = IPv4Network('127.0.0.0/8')
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_loopback_network = IPv4Network('127.0.0.0/8')
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IPv4Address._multicast_network = IPv4Network('224.0.0.0/4')
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_multicast_network = IPv4Network('224.0.0.0/4')
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IPv4Address._private_networks = [
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IPv4Network('0.0.0.0/8'),
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IPv4Network('10.0.0.0/8'),
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IPv4Network('127.0.0.0/8'),
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IPv4Network('169.254.0.0/16'),
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IPv4Network('172.16.0.0/12'),
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IPv4Network('192.0.0.0/29'),
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IPv4Network('192.0.0.170/31'),
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IPv4Network('192.0.2.0/24'),
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IPv4Network('192.168.0.0/16'),
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IPv4Network('198.18.0.0/15'),
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IPv4Network('198.51.100.0/24'),
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IPv4Network('203.0.113.0/24'),
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IPv4Network('240.0.0.0/4'),
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IPv4Network('255.255.255.255/32'),
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]
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_private_networks = [
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IPv4Network('0.0.0.0/8'),
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IPv4Network('10.0.0.0/8'),
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IPv4Network('127.0.0.0/8'),
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IPv4Network('169.254.0.0/16'),
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IPv4Network('172.16.0.0/12'),
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IPv4Network('192.0.0.0/29'),
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IPv4Network('192.0.0.170/31'),
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IPv4Network('192.0.2.0/24'),
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IPv4Network('192.168.0.0/16'),
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IPv4Network('198.18.0.0/15'),
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IPv4Network('198.51.100.0/24'),
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IPv4Network('203.0.113.0/24'),
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IPv4Network('240.0.0.0/4'),
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IPv4Network('255.255.255.255/32'),
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]
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IPv4Address._reserved_network = IPv4Network('240.0.0.0/4')
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_reserved_network = IPv4Network('240.0.0.0/4')
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IPv4Address._unspecified_address = IPv4Address('0.0.0.0')
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_unspecified_address = IPv4Address('0.0.0.0')
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IPv4Address._constants = _IPv4Constants
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class _BaseV6:
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@ -1946,7 +1950,7 @@ class IPv6Address(_BaseV6, _BaseAddress):
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See RFC 2373 2.7 for details.
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"""
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return self in self._multicast_network
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return self in self._constants._multicast_network
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@property
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def is_reserved(self):
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@ -1957,7 +1961,7 @@ class IPv6Address(_BaseV6, _BaseAddress):
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reserved IPv6 Network ranges.
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"""
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return any(self in x for x in self._reserved_networks)
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return any(self in x for x in self._constants._reserved_networks)
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@property
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def is_link_local(self):
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@ -1967,7 +1971,7 @@ class IPv6Address(_BaseV6, _BaseAddress):
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A boolean, True if the address is reserved per RFC 4291.
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"""
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return self in self._linklocal_network
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return self in self._constants._linklocal_network
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@property
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def is_site_local(self):
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@ -1981,7 +1985,7 @@ class IPv6Address(_BaseV6, _BaseAddress):
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A boolean, True if the address is reserved per RFC 3513 2.5.6.
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"""
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return self in self._sitelocal_network
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return self in self._constants._sitelocal_network
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@property
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@functools.lru_cache()
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@ -1993,7 +1997,7 @@ class IPv6Address(_BaseV6, _BaseAddress):
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iana-ipv6-special-registry.
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"""
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return any(self in net for net in self._private_networks)
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return any(self in net for net in self._constants._private_networks)
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@property
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def is_global(self):
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@ -2277,32 +2281,37 @@ class IPv6Network(_BaseV6, _BaseNetwork):
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self.broadcast_address.is_site_local)
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IPv6Address._linklocal_network = IPv6Network('fe80::/10')
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class _IPv6Constants:
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IPv6Address._multicast_network = IPv6Network('ff00::/8')
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_linklocal_network = IPv6Network('fe80::/10')
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IPv6Address._private_networks = [
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IPv6Network('::1/128'),
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IPv6Network('::/128'),
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IPv6Network('::ffff:0:0/96'),
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IPv6Network('100::/64'),
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IPv6Network('2001::/23'),
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IPv6Network('2001:2::/48'),
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IPv6Network('2001:db8::/32'),
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IPv6Network('2001:10::/28'),
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IPv6Network('fc00::/7'),
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IPv6Network('fe80::/10'),
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_multicast_network = IPv6Network('ff00::/8')
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_private_networks = [
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IPv6Network('::1/128'),
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IPv6Network('::/128'),
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IPv6Network('::ffff:0:0/96'),
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IPv6Network('100::/64'),
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IPv6Network('2001::/23'),
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IPv6Network('2001:2::/48'),
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IPv6Network('2001:db8::/32'),
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IPv6Network('2001:10::/28'),
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IPv6Network('fc00::/7'),
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IPv6Network('fe80::/10'),
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]
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_reserved_networks = [
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IPv6Network('::/8'), IPv6Network('100::/8'),
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IPv6Network('200::/7'), IPv6Network('400::/6'),
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IPv6Network('800::/5'), IPv6Network('1000::/4'),
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IPv6Network('4000::/3'), IPv6Network('6000::/3'),
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IPv6Network('8000::/3'), IPv6Network('A000::/3'),
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IPv6Network('C000::/3'), IPv6Network('E000::/4'),
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IPv6Network('F000::/5'), IPv6Network('F800::/6'),
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IPv6Network('FE00::/9'),
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]
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IPv6Address._reserved_networks = [
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IPv6Network('::/8'), IPv6Network('100::/8'),
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IPv6Network('200::/7'), IPv6Network('400::/6'),
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IPv6Network('800::/5'), IPv6Network('1000::/4'),
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IPv6Network('4000::/3'), IPv6Network('6000::/3'),
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IPv6Network('8000::/3'), IPv6Network('A000::/3'),
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IPv6Network('C000::/3'), IPv6Network('E000::/4'),
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IPv6Network('F000::/5'), IPv6Network('F800::/6'),
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IPv6Network('FE00::/9'),
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]
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_sitelocal_network = IPv6Network('fec0::/10')
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IPv6Address._sitelocal_network = IPv6Network('fec0::/10')
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IPv6Address._constants = _IPv6Constants
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