Connections now support non-cloneable Readers (read: all of them). Thanks, @retep998.

src/bot.rs

@@ -1,58 +1,57 @@
 use std::cell::RefCell;
 use std::collections::HashMap;
 use std::io::{BufferedReader, BufferedWriter, IoResult, TcpStream};
-use std::vec::Vec;
 use {Bot, process};
-use conn::{Conn, Connection};
+use conn::Connection;
 use data::{Config, IrcReader, IrcWriter, Message};
 
 pub struct IrcBot<'a, T, U> where T: IrcWriter, U: IrcReader {
-    pub conn: RefCell<Connection<T, U>>,
+    pub conn: Connection<T, U>,
     pub config: Config,
     process: RefCell<|&IrcBot<T, U>, &str, &str, &[&str]|:'a -> IoResult<()>>,
-    pub chanlists: HashMap<String, Vec<String>>,
+    pub chanlists: RefCell<HashMap<String, Vec<String>>>,
 }
 
-impl<'a> IrcBot<'a, BufferedWriter<TcpStream>, TcpStream> {
-    pub fn new(process: |&IrcBot<BufferedWriter<TcpStream>, TcpStream>, &str, &str, &[&str]|:'a -> IoResult<()>) -> IoResult<IrcBot<'a, BufferedWriter<TcpStream>, TcpStream>> {
+impl<'a> IrcBot<'a, BufferedWriter<TcpStream>, BufferedReader<TcpStream>> {
+    pub fn new(process: |&IrcBot<BufferedWriter<TcpStream>, BufferedReader<TcpStream>>, &str, &str, &[&str]|:'a -> IoResult<()>) -> IoResult<IrcBot<'a, BufferedWriter<TcpStream>, BufferedReader<TcpStream>>> {
         let config = try!(Config::load());
         let conn = try!(Connection::connect(config.server.as_slice(), config.port));
         Ok(IrcBot {
-            conn: RefCell::new(conn),
+            conn: conn,
             config: config,
             process: RefCell::new(process),
-            chanlists: HashMap::new(),
+            chanlists: RefCell::new(HashMap::new()),
         })
     }
 }
 
 impl<'a, T, U> Bot<'a> for IrcBot<'a, T, U> where T: IrcWriter, U: IrcReader {
     fn send_nick(&self, nick: &str) -> IoResult<()> {
-        Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "NICK", [nick]))
+        self.conn.send(Message::new(None, "NICK", [nick]))
     }
 
     fn send_user(&self, username: &str, real_name: &str) -> IoResult<()> {
-        Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "USER", [username, "0", "*", real_name]))
+        self.conn.send(Message::new(None, "USER", [username, "0", "*", real_name]))
     }
 
     fn send_join(&self, chan: &str) -> IoResult<()> {
-        Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "JOIN", [chan.as_slice()]))
+        self.conn.send(Message::new(None, "JOIN", [chan.as_slice()]))
     }
 
     fn send_mode(&self, chan: &str, mode: &str) -> IoResult<()> {
-        Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "MODE", [chan.as_slice(), mode.as_slice()]))
+        self.conn.send(Message::new(None, "MODE", [chan.as_slice(), mode.as_slice()]))
     }
 
     fn send_topic(&self, chan: &str, topic: &str) -> IoResult<()> {
-        Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "TOPIC", [chan.as_slice(), topic.as_slice()]))
+        self.conn.send(Message::new(None, "TOPIC", [chan.as_slice(), topic.as_slice()]))
     }
 
     fn send_invite(&self, person: &str, chan: &str) -> IoResult<()> {
-        Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "INVITE", [person.as_slice(), chan.as_slice()]))
+        self.conn.send(Message::new(None, "INVITE", [person.as_slice(), chan.as_slice()]))
     }
 
     fn send_privmsg(&self, chan: &str, msg: &str) -> IoResult<()> {
-        Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "PRIVMSG", [chan.as_slice(), msg.as_slice()]))
+        self.conn.send(Message::new(None, "PRIVMSG", [chan.as_slice(), msg.as_slice()]))
     }
 
     fn identify(&self) -> IoResult<()> {
@@ -61,9 +60,7 @@ impl<'a, T, U> Bot<'a> for IrcBot<'a, T, U> where T: IrcWriter, U: IrcReader {
     }
 
     fn output(&mut self) -> IoResult<()> {
-        let mut reader = match self.conn.borrow_mut().deref_mut() {
-            &Conn(_, ref recv) => BufferedReader::new(recv.clone()),
-        };
+        let mut reader = self.conn.reader();
         for line in reader.lines() {
             match line {
                 Ok(ln) => {
@@ -86,17 +83,17 @@ impl<'a, T, U> IrcBot<'a, T, U> where T: IrcWriter, U: IrcReader {
     pub fn from_connection(conn: Connection<T, U>, process: |&IrcBot<T, U>, &str, &str, &[&str]|:'a -> IoResult<()>) -> IoResult<IrcBot<'a, T, U>> {
         let config = try!(Config::load());
         Ok(IrcBot {
-            conn: RefCell::new(conn),
+            conn: conn,
             config: config,
             process: RefCell::new(process),
-            chanlists: HashMap::new(),
+            chanlists: RefCell::new(HashMap::new()),
         })
     }
 
-    fn handle_command(&mut self, source: &str, command: &str, args: &[&str]) -> IoResult<()> {
+    fn handle_command(&self, source: &str, command: &str, args: &[&str]) -> IoResult<()> {
         match (command, args) {
             ("PING", [msg]) => {
-                try!(Connection::send(self.conn.borrow_mut().deref_mut(), Message::new(None, "PONG", [msg])));
+                try!(self.conn.send(Message::new(None, "PONG", [msg])));
             },
             ("376", _) => { // End of MOTD
                 for chan in self.config.channels.iter() {
@@ -110,19 +107,19 @@ impl<'a, T, U> IrcBot<'a, T, U> where T: IrcWriter, U: IrcReader {
             },
             ("353", [_, _, chan, users]) => { // /NAMES
                 for user in users.split_str(" ") {
-                    if !match self.chanlists.find_mut(&String::from_str(chan)) {
+                    if !match self.chanlists.borrow_mut().find_mut(&String::from_str(chan)) {
                         Some(vec) => {
                             vec.push(String::from_str(user));
                             true
                         },
                         None => false,
                     } {
-                        self.chanlists.insert(String::from_str(chan), vec!(String::from_str(user)));
+                        self.chanlists.borrow_mut().insert(String::from_str(chan), vec!(String::from_str(user)));
                     }
                 }
             },
             ("JOIN", [chan]) => {
-                match self.chanlists.find_mut(&String::from_str(chan)) {
+                match self.chanlists.borrow_mut().find_mut(&String::from_str(chan)) {
                     Some(vec) => {
                         match source.find('!') {
                             Some(i) => vec.push(String::from_str(source.slice_to(i))),
@@ -133,7 +130,7 @@ impl<'a, T, U> IrcBot<'a, T, U> where T: IrcWriter, U: IrcReader {
                 }
             },
             ("PART", [chan, _]) => {
-                match self.chanlists.find_mut(&String::from_str(chan)) {
+                match self.chanlists.borrow_mut().find_mut(&String::from_str(chan)) {
                     Some(vec) => {
                         match source.find('!') {
                             Some(i) => {

src/conn.rs

@@ -1,34 +1,44 @@
-use std::io::{BufferedWriter, IoResult, TcpStream, Writer};
+use std::cell::{RefCell, RefMut};
+use std::io::{BufferedReader, BufferedWriter, IoResult, TcpStream, Writer};
 use data::{IrcReader, IrcWriter, Message};
 
-pub enum Connection<T, U> where T: IrcWriter, U: IrcReader {
-    Conn(T, U),
+pub struct Connection<T, U> where T: IrcWriter, U: IrcReader {
+    writer: RefCell<T>,
+    reader: RefCell<U>,
 }
 
-impl Connection<BufferedWriter<TcpStream>, TcpStream> {
-    pub fn connect(host: &str, port: u16) -> IoResult<Connection<BufferedWriter<TcpStream>, TcpStream>> {
+impl Connection<BufferedWriter<TcpStream>, BufferedReader<TcpStream>> {
+    pub fn connect(host: &str, port: u16) -> IoResult<Connection<BufferedWriter<TcpStream>, BufferedReader<TcpStream>>> {
         let socket = try!(TcpStream::connect(host, port));
-        Ok(Conn(BufferedWriter::new(socket.clone()), socket.clone()))
+        Connection::new(BufferedWriter::new(socket.clone()), BufferedReader::new(socket.clone()))
     }
 }
 
 impl<T, U> Connection<T, U> where T: IrcWriter, U: IrcReader {
-    fn send_internal(conn: &mut Connection<T, U>, msg: &str) -> IoResult<()> {
-        match conn {
-            &Conn(ref mut send, _) => {
-                try!(send.write_str(msg));
-                send.flush()
-            }
-        }
+    fn new(writer: T, reader: U) -> IoResult<Connection<T, U>> {
+        Ok(Connection {
+            writer: RefCell::new(writer),
+            reader: RefCell::new(reader),
+        })
     }
 
-    pub fn send(conn: &mut Connection<T, U>, msg: Message) -> IoResult<()> {
+    fn send_internal(&self, msg: &str) -> IoResult<()> {
+        let mut send = self.writer.borrow_mut();
+        try!(send.write_str(msg));
+        send.flush()
+    }
+
+    pub fn send(&self, msg: Message) -> IoResult<()> {
         let mut send = msg.command.to_string();
         send.push_str(" ");
         send.push_str(msg.args.init().connect(" ").as_slice());
         send.push_str(" :");
         send.push_str(*msg.args.last().unwrap());
         send.push_str("\r\n");
-        Connection::send_internal(conn, send.as_slice())
+        self.send_internal(send.as_slice())
+    }
+
+    pub fn reader<'a>(&'a self) -> RefMut<'a, U> {
+        self.reader.borrow_mut()
     }
 }

src/data.rs

@@ -4,8 +4,8 @@ use serialize::json::{decode};
 
 pub trait IrcWriter: Writer + Sized + 'static {}
 impl<T> IrcWriter for T where T: Writer + Sized + 'static {}
-pub trait IrcReader: Reader + Sized + Clone + 'static {}
-impl<T> IrcReader for T where T: Reader + Sized + Clone + 'static {}
+pub trait IrcReader: Buffer + Sized + 'static {}
+impl<T> IrcReader for T where T: Buffer + Sized + 'static {}
 
 
 #[deriving(Show, PartialEq)]