Fixed.
[riece] / lisp / riece-ruby.el
index a0006e4..26b0f04 100644 (file)
@@ -1,4 +1,4 @@
-;;; riece-ruby.el --- interact with ruby interpreter
+;;; riece-ruby.el --- interact with Ruby interpreter
 ;; Copyright (C) 1998-2005 Daiki Ueno
 
 ;; Author: Daiki Ueno <ueno@unixuser.org>
 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 ;; Boston, MA 02111-1307, USA.
 
+;;; Commentary:
+
+;; riece-ruby.el is a library to interact with the Ruby interpreter.
+;; It supports concurrent execution of Ruby programs in a single
+;; session.  For example:
+;; 
+;; (riece-ruby-execute "t1" "sleep 30"); returns immediately
+;; => nil
+;; (riece-ruby-execute "t2" "1 + 1")
+;; => nil
+;; (riece-ruby-execute "t3" "\"")
+;; => nil
+;;
+;; (riece-ruby-inspect "t1")
+;; => ((OK nil) nil "running")
+;; (riece-ruby-inspect "t2")
+;; => ((OK nil) "2" "finished")
+;; (riece-ruby-inspect "t3")
+;; => ((OK nil) "(eval):1:in `dispatch_eval': compile error
+;; (eval):1: unterminated string meets end of file" "exited")
+
 ;;; Code:
 
 (defvar riece-ruby-command "ruby"
   "Command name for Ruby interpreter.")
 
+(defvar riece-ruby-process nil)
+
+(defvar riece-ruby-lock nil)
+(defvar riece-ruby-response nil)
+(defvar riece-ruby-data nil)
+(defvar riece-ruby-input nil)
+(defvar riece-ruby-status nil)
+
+(defvar riece-ruby-output-handler-alist nil)
+(defvar riece-ruby-exit-handler-alist nil)
+
 (defun riece-ruby-substitute-variables (program variable value)
   (setq program (copy-sequence program))
   (let ((pointer program))
            index (- (match-end 0) 2)))
     data))
 
-(defun riece-ruby-start ()                     
-  (start-process "riece-ruby"
-                (generate-new-buffer " *Ruby*")
-                riece-ruby-command
-                (expand-file-name "rubyserv.rb"
-                                  (file-name-directory
-                                   (symbol-file 'riece-ruby-start)))))
-
-(defun riece-ruby-execute (process program &optional callback)
-  (set-process-filter process #'riece-ruby-filter)
-  (set-process-sentinel process #'riece-ruby-sentinel)
-  (with-current-buffer (process-buffer process)
-    (make-local-variable 'riece-ruby-callback)
-    (setq riece-ruby-callback callback)
+(defun riece-ruby-send-eval (name program)
+  (let* ((string (riece-ruby-escape-data program))
+        (length (- (length string) 998))
+        (index 0)
+        data)
+    (while (< index length)
+      (setq data (cons (substring string index (setq index (+ index 998)))
+                      data)))
+    (setq data (cons (substring string index) data)
+         data (nreverse data))
+    (save-excursion
+      (set-buffer (process-buffer riece-ruby-process))
+      (make-local-variable 'riece-ruby-lock)
+      (setq riece-ruby-lock nil)
+      (make-local-variable 'riece-ruby-response)
+      (setq riece-ruby-response nil)
+      (make-local-variable 'riece-ruby-data)
+      (setq riece-ruby-data nil)
+      (make-local-variable 'riece-ruby-input)
+      (setq riece-ruby-input nil)
+      (make-local-variable 'riece-ruby-status)
+      (setq riece-ruby-status nil))
+    (process-send-string riece-ruby-process
+                        (concat "EVAL " name "\r\n"))
+    (while data
+      (process-send-string riece-ruby-process
+                          (concat "D " (car data) "\r\n"))
+      (setq data (cdr data)))
+    (process-send-string riece-ruby-process "END\r\n")))
+    
+(defun riece-ruby-send-poll (name)
+  (save-excursion
+    (set-buffer (process-buffer riece-ruby-process))
+    (make-local-variable 'riece-ruby-lock)
+    (setq riece-ruby-lock nil)
+    (make-local-variable 'riece-ruby-response)
+    (setq riece-ruby-response nil)
     (make-local-variable 'riece-ruby-data)
-    (setq riece-ruby-data nil))
-  (process-send-string process
-                      (concat "EVAL " (riece-ruby-escape-data program)
-                              "\n")))
+    (setq riece-ruby-data nil)
+    (make-local-variable 'riece-ruby-input)
+    (setq riece-ruby-input nil)
+    (make-local-variable 'riece-ruby-status)
+    (setq riece-ruby-status nil))
+  (process-send-string riece-ruby-process
+                      (concat "POLL " name "\r\n")))
 
 (defun riece-ruby-filter (process input)
   (save-excursion
     (goto-char (process-mark process))
     (beginning-of-line)
     (while (looking-at ".*\r?\n")
-      (if (looking-at "OK\\( \\(.*\\)\\)?")
+      (if (looking-at "OK\\( \\(.*\\)\\)?\r")
          (progn
-           (funcall riece-ruby-callback
-                    (list 'OK
-                          (match-string 2)
-                          (riece-ruby-unescape-data
-                           (apply #'concat (nreverse riece-ruby-data)))))
-           (setq riece-ruby-data nil))
-       (if (looking-at "ERR \\([0-9]+\\)\\( \\(.*\\)\\)?")
+           (if riece-ruby-input
+               (setq riece-ruby-data (mapconcat #'riece-ruby-unescape-data
+                                                riece-ruby-input "")))
+           (setq riece-ruby-input nil
+                 riece-ruby-response (list 'OK (match-string 2))
+                 riece-ruby-lock nil))
+       (if (looking-at "ERR \\([0-9]+\\)\\( \\(.*\\)\\)?\r")
            (progn
-             (funcall riece-ruby-callback
-                      (list 'ERR
-                            (number-to-string (match-string 1))
-                            (match-string 3)
-                            (riece-ruby-unescape-data
-                             (apply #'concat (nreverse riece-ruby-data)))))
-             (setq riece-ruby-data nil))
-         (if (looking-at "D \\(.*\\)")
-             (setq riece-ruby-data (cons (match-string 1) riece-ruby-data)))))
-      (forward-line))))
+             (setq riece-ruby-input nil
+                   riece-ruby-response
+                   (list 'ERR (string-to-number (match-string 2))
+                         (match-string 3))
+                   riece-ruby-lock nil))
+         (if (looking-at "D \\(.*\\)\r")
+             (setq riece-ruby-input (cons (match-string 1) riece-ruby-input))
+           (if (looking-at "S program \\(.*\\)\r")
+               (setq riece-ruby-status (match-string 1))
+             (if (looking-at "# output \\(.*\\) \\(.*\\)\r")
+                 (let ((entry (assoc (match-string 1)
+                                     riece-ruby-output-handler-alist)))
+                   (if entry
+                       (funcall (cdr entry) (match-string 2))))
+               (if (looking-at "# exit \\(.*\\)\r")
+                   (let ((entry (assoc (match-string 1)
+                                       riece-ruby-exit-handler-alist)))
+                     (if entry
+                         (funcall (cdr entry))))))))))
+      (forward-line))
+    (set-marker (process-mark process) (point-marker))))
 
 (defun riece-ruby-sentinel (process status)
   (kill-buffer (process-buffer process)))
 
+(defun riece-ruby-execute (name program)
+  (unless (and riece-ruby-process
+              (eq (process-status riece-ruby-process) 'run))
+    (setq riece-ruby-process
+         (start-process "riece-ruby" (generate-new-buffer " *Ruby*")
+                        riece-ruby-command
+                        (expand-file-name
+                         "rubyserv.rb"
+                         (file-name-directory
+                          (symbol-file 'riece-ruby-execute)))))
+    (set-process-filter riece-ruby-process #'riece-ruby-filter)
+    (set-process-sentinel riece-ruby-process #'riece-ruby-sentinel))
+  (save-excursion
+    (set-buffer (process-buffer riece-ruby-process))
+    (setq riece-ruby-lock t)
+    (riece-ruby-send-eval name program)
+    (while riece-ruby-lock
+      (accept-process-output riece-ruby-process))))
+
+(defun riece-ruby-inspect (name)
+  (save-excursion
+    (set-buffer (process-buffer riece-ruby-process))
+    (setq riece-ruby-lock t)
+    (riece-ruby-send-poll name)
+    (while (null riece-ruby-response)
+      (accept-process-output riece-ruby-process))
+    (list riece-ruby-response
+         riece-ruby-data
+         riece-ruby-status)))
+
 (provide 'riece-ruby)
 
 ;;; riece-ruby.el ends here