, parseIRCMessage ":cherryh.freenode.net JOIN #cha,#ch-b #twilight\r\n"
, parseIRCMessage ":cherryh.freenode.net ISON a b c d e f :g h\r\n"
, parseIRCMessage ":wilhelm.freenode.net 001 clooglebot :Welcome to the freenode Internet Relay Chat Network clooglebot\r\n"
+ , parseIRCMessage "PING :orwell.freenode.net\r\n"
]
parseIRCMessage :: String -> Either [Error] IRCMessage
parseIRCMessage s = case runParser parsePrefix (fromString s) of
+ // Prefix is parsed
([(prefix, rest):_], _)
- = case parse parseReply rest of
- Left e = case parseCmd rest of
- Left e2 = Left [e2:e]
- Right cmd
- = Right {IRCMessage | irc_prefix=prefix, irc_command=Right cmd}
- Right repl
- = Right {IRCMessage | irc_prefix=prefix, irc_command=Left repl}
- (_, es) = Left ["couldn't parse prefix":es]
+ //Try parsing a numeric reply
+ = case parse parseReply rest of
+ //Try a normal command
+ Left e = case parseCmd rest of
+ Left e2 = Left [e2:e]
+ Right cmd = Right {IRCMessage | irc_prefix=prefix, irc_command=Right cmd}
+ Right repl = Right {IRCMessage | irc_prefix=prefix, irc_command=Left repl}
+ // Error parsing prefix
+ (_, es) = Left ["Error parsing prefix"]
//Prefix
parsePrefix :: Parser Char (Maybe (Either IRCUser String))
parsePrefix
- = optional (pToken ':' >>| parseEither parseUser parseHost) <* pToken ' '
+ = optional (pToken ':' >>| parseEither parseUser parseHost <* pToken ' ')
where
parseEither :: (Parser a b) (Parser a c) -> Parser a (Either b c)
parseEither p q = Left <$> p <|> Right <$> q