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+;;; rudel-obby-debug.el --- Debugging functions for obby backend
+;;
+;; Copyright (C) 2009 Jan Moringen
+;;
+;; Author: Jan Moringen <scymtym@users.sourceforge.net>
+;; Keywords: Rudel, obby, debugging
+;; X-RCS: $Id:$
+;;
+;; This program is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <http://www.gnu.org/licenses>.
+
+
+;;; Commentary:
+;;
+;; Debugging functions for the obby backend.
+
+
+;;; History:
+;;
+;; 0.1 - Initial revision.
+
+
+;;; Code:
+;;
+
+(require 'eieio)
+
+(require 'rudel-debug)
+
+(require 'rudel-obby-util)
+
+
+;;; Variables
+;;
+
+(defvar rudel-obby-debug-old-state nil
+  "Saves state of state machines across one function call.")
+
+
+;;; Functions
+;;
+
+(defmethod rudel-send :before ((this rudel-obby-socket-owner)
+			       name &rest arguments)
+  "Print NAME and ARGUMENTS to debug stream."
+  (let ((message (apply #'rudel-obby-assemble-message
+			name arguments)))
+
+    (with-slots (socket) this
+      (rudel-debug-stream-insert
+       (rudel-debug-stream-name socket)
+       :sent
+       (concat  (substring message 0 (min (length message) 100))
+		(when (> (length message) 100)
+		  "..."))
+       (append (list name) arguments))))
+    )
+
+(defmethod rudel-receive :before ((this rudel-obby-socket-owner) data)
+  "Print DATA to debug stream."
+  (with-slots (socket) this
+    (rudel-debug-stream-insert
+     (rudel-debug-stream-name socket)
+     :received
+     (concat (substring data 0 (min (length data) 100))
+	     (when (> (length data) 100)
+	       "..."))))
+  )
+
+(defmethod rudel-message :before ((this rudel-obby-socket-owner)
+				  message)
+  "Print DATA to debug stream."
+  (let ((data (apply #'rudel-obby-assemble-message message)))
+
+    (with-slots (socket) this
+      (rudel-debug-stream-insert
+       (rudel-debug-stream-name socket)
+       :received-processed
+       (concat (substring data 0 (min (length data) 100))
+	       (when (> (length data) 100)
+		 "..."))
+       message)
+      ))
+  )
+
+(defmethod rudel-switch :before ((this rudel-obby-socket-owner)
+				 state &rest arguments)
+  "Store name of STATE for later printing."
+  (with-slots (state) this
+    (setq rudel-obby-debug-old-state
+	  (if state
+	      (object-name-string state)
+	    "#start")))
+  )
+
+(defmethod rudel-switch :after ((this rudel-obby-socket-owner)
+				state &rest arguments)
+  "Print STATE and ARGUMENTS to debug stream."
+  (with-slots (socket state) this
+    (let ((old-state rudel-obby-debug-old-state)
+	  (new-state (object-name-string state)))
+      (unless (string= old-state new-state)
+	(rudel-debug-stream-insert
+	 (rudel-debug-stream-name socket)
+	 :special
+	 (if arguments
+	     (format "%s -> %s %s" old-state new-state arguments)
+	   (format "%s -> %s" old-state new-state))))))
+  )
+
+(provide 'rudel-obby-debug)
+;;; rudel-obby-debug.el ends here