add matching Hostmask type for Self, Nickname->Nick

ircrobots/matching/params.py

@@ -56,7 +56,14 @@ class Regex(IMatchResponseParam):
             self._pattern = re_compile(self._value)
         return bool(self._pattern.search(arg))
 
-class Nickname(IMatchResponseHostmask):
+class Self(IMatchResponseHostmask):
+    def __repr__(self) -> str:
+        return "Self()"
+    def match(self, server: IServer, hostmask: Hostmask):
+        return server.casefold(hostmask.nickname) == server.nickname_lower
+SELF = Self()
+
+class Nick(IMatchResponseHostmask):
     def __init__(self, nickname: str):
         self._nickname = nickname
         self._folded: Optional[str] = None

ircrobots/server.py

@@ -16,7 +16,7 @@ from .ircv3     import (CAPContext, sts_transmute, CAP_ECHO, CAP_SASL,
     CAP_LABEL, LABEL_TAG, resume_transmute)
 from .sasl      import SASLContext, SASLResult
 from .join_info import WHOContext
-from .matching  import ResponseOr, Responses, Response, ANY, Folded, Nickname
+from .matching  import ResponseOr, Responses, Response, ANY, SELF, Folded
 from .asyncs    import MaybeAwait, WaitFor
 from .struct    import Whois
 from .params    import ConnectionParams, SASLParams, STSPolicy, ResumePolicy
@@ -312,7 +312,7 @@ class Server(IServer):
             line = await self.wait_for(Response(
                 "PART",
                 [ParamFolded(name)],
-                source=Nickname(self.nickname_lower)
+                source=SELF
             ))
             return
         return MaybeAwait(_assure)