reorganize structs

src/irc/commands.go

 package irc
 
-type Message interface {
-	Handle(s *Server, c *Client)
-}
-
-type NickMessage struct {
-	nickname string
-}
-
 func (m *NickMessage) Handle(s *Server, c *Client) {
 	if s.nicks[m.nickname] != nil {
 		c.send <- ErrNickNameInUse(m.nickname)
 	tryRegister(s, c)
 }
 
-type UserMessage struct {
-	user string
-	mode uint8
-	unused string
-	realname string
-}
-
 func (m *UserMessage) Handle(s *Server, c *Client) {
 	if c.username != "" {
 		c.send <- ErrAlreadyRegistered(c.Nick())
 	tryRegister(s, c)
 }
 
-type QuitMessage struct {
-	message string
-}
-
 func (m *QuitMessage) Handle(s *Server, c *Client) {
 	c.send <- MessageError()
 	delete(s.nicks, c.nick)
 }
 
-type UnknownMessage struct {
-	command string
-}
-
 func (m *UnknownMessage) Handle(s *Server, c *Client) {
 	c.send <- ErrUnknownCommand(c.Nick(), m.command)
 }
 
-type PingMessage struct {}
-
 func (m *PingMessage) Handle(s *Server, c *Client) {
 	c.send <- MessagePong()
 }

src/irc/message.go

+package irc
+
+type Message interface {
+	Handle(s *Server, c *Client)
+}
+
+type NickMessage struct {
+	nickname string
+}
+
+type UserMessage struct {
+	user string
+	mode uint8
+	unused string
+	realname string
+}
+
+
+type QuitMessage struct {
+	message string
+}
+
+type UnknownMessage struct {
+	command string
+}
+
+type PingMessage struct {}