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Make DomainSpecificString an attrs class (#9875)

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Erik Johnston 2021-04-23 15:46:29 +01:00 • committed by GitHub
parent ceaa76970f
commit a15c003e5b
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4 changed files with 24 additions and 8 deletions
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17
synapse/types.py
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@ -199,9 +199,8 @@ def get_localpart_from_id(string):
DS = TypeVar("DS", bound="DomainSpecificString")
class DomainSpecificString(
namedtuple("DomainSpecificString", ("localpart", "domain")), metaclass=abc.ABCMeta
):
@attr.s(slots=True, frozen=True, repr=False)
class DomainSpecificString(metaclass=abc.ABCMeta):
"""Common base class among ID/name strings that have a local part and a
domain name, prefixed with a sigil.
@ -213,11 +212,8 @@ class DomainSpecificString(
SIGIL = abc.abstractproperty() # type: str # type: ignore
# Deny iteration because it will bite you if you try to create a singleton
# set by:
# users = set(user)
def __iter__(self):
raise ValueError("Attempted to iterate a %s" % (type(self).__name__,))
localpart = attr.ib(type=str)
domain = attr.ib(type=str)
# Because this class is a namedtuple of strings and booleans, it is deeply
# immutable.
@ -272,30 +268,35 @@ class DomainSpecificString(
__repr__ = to_string
@attr.s(slots=True, frozen=True, repr=False)
class UserID(DomainSpecificString):
"""Structure representing a user ID."""
SIGIL = "@"
@attr.s(slots=True, frozen=True, repr=False)
class RoomAlias(DomainSpecificString):
"""Structure representing a room name."""
SIGIL = "#"
@attr.s(slots=True, frozen=True, repr=False)
class RoomID(DomainSpecificString):
"""Structure representing a room id. """
SIGIL = "!"
@attr.s(slots=True, frozen=True, repr=False)
class EventID(DomainSpecificString):
"""Structure representing an event id. """
SIGIL = "$"
@attr.s(slots=True, frozen=True, repr=False)
class GroupID(DomainSpecificString):
"""Structure representing a group ID."""