Formatting

krl-mode.el

@@ -4,6 +4,8 @@
     (define-key map "\C-j" 'newline-and-indent)
     map)
   "Keymap for KRL major mode")
+(defvar krl-indent-offset 2
+  "Indentation step for nested KRL blocks.")
 
 (add-to-list 'auto-mode-alist '("\\.src\\'" . krl-mode))
 (add-to-list 'auto-mode-alist '("\\.dat\\'" . krl-mode))
@@ -70,6 +72,7 @@
     "ENDDAT"
     "DECL"
     "GLOBAL"
+    "CONST"
     "PUBLIC"
     "THEN"
     "ENUM"
@@ -86,16 +89,20 @@
     "DO"
     "STEP"
     "WHEN"
+    "RETURN"
+    "STRUC"
+    "TO"
+    "SIGNAL"
     ))
 
 (defconst krl-keywords
   (append
-  (mapcar (lambda (x) (rstrip (nth 0 x))) krl-keywords-toplevel-block-pairs)
-  (mapcar (lambda (x) (rstrip (nth 1 x))) krl-keywords-toplevel-block-pairs)
-  (mapcar (lambda (x) (rstrip (nth 0 x))) krl-keywords-nested-block-pairs)
-  (mapcar (lambda (x) (rstrip (nth 1 x))) krl-keywords-nested-block-pairs)
-  (mapcar (lambda (x) (rstrip (nth 2 x))) krl-keywords-nested-block-middle)
-  krl-keywords-misc
+   (mapcar (lambda (x) (rstrip (nth 0 x))) krl-keywords-toplevel-block-pairs)
+   (mapcar (lambda (x) (rstrip (nth 1 x))) krl-keywords-toplevel-block-pairs)
+   (mapcar (lambda (x) (rstrip (nth 0 x))) krl-keywords-nested-block-pairs)
+   (mapcar (lambda (x) (rstrip (nth 1 x))) krl-keywords-nested-block-pairs)
+   (mapcar (lambda (x) (rstrip (nth 2 x))) krl-keywords-nested-block-middle)
+   krl-keywords-misc
    ))
 
 (defconst krl-warning-keywords
@@ -106,17 +113,23 @@
     "WAIT"
     "TRIGGER"
     "!"                                 ; Placeholder for positions.
+    "ON_ERROR_PROCEED"
     ))
 
 (defconst krl-types
   '(
     "CHAR"
     "INT"
+    "BOOL"
     "REAL"
     "AXIS"
     "E6AXIS"
     "POS"
     "E6POS"
+    "MODUS_T"
+    "STATE_T"
+    "DATE"
+    "TORQLIMITPARAM"
     ))
 
 (defconst krl-constants
@@ -159,9 +172,13 @@
     "StrCopy"
     "SWRITE"
     "SREAD"
+                                        ; Torque
+    "SET_TORQUE_LIMITS"
+    "RESET_TORQUE_LIMITS"
                                         ; Magic
     "CWRITE"
     "CREAD"
+    "ERR_CLEAR"
     ))
 
 (defconst krl-font-lock-keywords
@@ -188,24 +205,24 @@
 ;; Get the string pair for the block we are currently on the end of.
 (defun krl-get-pair ()
   (let ((pairs (copy-sequence krl-keywords-nested-block-pairs)) (pair nil))
-      (while (and (not pair) pairs)
-        (when (looking-at (concat "^ *" (nth 1 (car pairs))))
-          (setq pair (car pairs)))
-        (setq pairs (cdr pairs)))
-      ;; FIXME: Hack for broken ELSE, CASE.
-      (when (not pair)
-        (let ((triples (copy-sequence krl-keywords-nested-block-middle)))
-          (while (and (not pair) triples)
-            (when (looking-at (concat "^ *" (nth 2 (car triples))))
-              (setq pair (car triples)))
-            (setq triples (cdr triples))
+    (while (and (not pair) pairs)
+      (when (looking-at (concat "^ *" (nth 1 (car pairs))))
+        (setq pair (car pairs)))
+      (setq pairs (cdr pairs)))
+    ;; FIXME: Hack for broken ELSE, CASE.
+    (when (not pair)
+      (let ((triples (copy-sequence krl-keywords-nested-block-middle)))
+        (while (and (not pair) triples)
+          (when (looking-at (concat "^ *" (nth 2 (car triples))))
+            (setq pair (car triples)))
+          (setq triples (cdr triples))
           )))
-      pair))
+    pair))
 
 (defun krl-indent-of-matching ()
   (save-excursion
     (let ((balance 1) (pair (krl-get-pair)))
-      ;(message (nth 0 pair))
+                                        ;(message (nth 0 pair))
       (while (and (/= balance 0) (not (bobp)))
         (progn
           (forward-line -1)
@@ -248,65 +265,76 @@
         (forward-line -1)
         (cond
          ((looking-at krl-indent-regex-toplevel-block-close)
-          ;(message "found tlb close")
+                                        ;(message "found tlb close")
           (setq ind 0))
          ((looking-at krl-indent-regex-toplevel-block-open)
-          ;(message "found tlb open")
-          (setq ind (+ 2 (current-indentation))))
+                                        ;(message "found tlb open")
+          (setq ind (+ krl-indent-offset (current-indentation))))
          ((looking-at krl-indent-regex-nested-block-close)
-          ;(message "found nb close")
+                                        ;(message "found nb close")
           (setq ind (current-indentation)))
          ((looking-at krl-indent-regex-nested-block-open)
-          ;(message "found nb open")
-          (setq ind (+ 2 (current-indentation))))
+                                        ;(message "found nb open")
+          (setq ind (+ krl-indent-offset (current-indentation))))
          (t
-          ;(message "found other")
+                                        ;(message "found other")
           )
          ))
       ind)))
 
+
+(defun indent-and-position (col)
+  (progn
+    (save-excursion
+      (indent-line-to col))
+    (when (< (current-column) col)
+      (move-to-column col))))
+
+
 (defun krl-indent-line ()
   "Indent current line as KRL."
   (interactive)
-  (save-excursion
-    (progn
-      (beginning-of-line)
-      (if (bobp)
-          (indent-line-to 0)
-        (let (indent-curr)
-          (progn
-            (cond ((looking-at krl-indent-regex-toplevel-block-open)
-                   (progn
-                     ;(message "toplevel open")
-                     (indent-line-to 0)))
-                  ((looking-at krl-indent-regex-toplevel-block-close)
-                   (progn
-                     ;(message "toplevel close")
-                     (indent-line-to 0)))
-                  ((looking-at "^ *&")
-                   (progn
-                     ;(message "&")
-                     ;; HMI editor crud.
-                     (indent-line-to 0)))
-                  ((looking-at krl-indent-regex-nested-block-close)
-                   (progn
-                     ;(message "nested close")
-                     (indent-line-to (krl-indent-of-matching))))
-                  ((looking-at krl-indent-regex-nested-block-middle)
-                   (progn
-                     ;(message "annoying stuff")
-                     ;; (indent-line-to (krl-indent-of-block-opener))))
-                     (indent-line-to (krl-indent-of-matching))))
-                  (t
-                   (progn
-                     ;(message "other")
-                     ;; ;(message krl-indent-regex-toplevel-block-open)
-                     ;; (indent-line-to (krl-find-hinted-indent))))
-                     (let ((hinted-indent (krl-find-hinted-indent)))
-                       (when (not hinted-indent)
-                         (setq hinted-indent 0))
-                       (indent-line-to hinted-indent))))
-            )))))))
+  (let ((ind nil))
+    (save-excursion
+      (progn
+        (beginning-of-line)
+        (if (bobp)
+            (indent-line-to 0)
+          (let (indent-curr)
+            (progn
+              (cond ((looking-at krl-indent-regex-toplevel-block-open)
+                     (progn
+                                        ;(message "toplevel open")
+                       (setq ind 0)))
+                    ((looking-at krl-indent-regex-toplevel-block-close)
+                     (progn
+                                        ;(message "toplevel close")
+                       (setq ind 0)))
+                    ((looking-at "^ *&")
+                     (progn
+                                        ;(message "&")
+                       ;; HMI editor crud.
+                       (setq ind 0)))
+                    ((looking-at krl-indent-regex-nested-block-close)
+                     (progn
+                                        ;(message "nested close")
+                       (setq ind (krl-indent-of-matching))))
+                    ((looking-at krl-indent-regex-nested-block-middle)
+                     (progn
+                                        ;(message "annoying stuff")
+                       ;; (indent-line-to (krl-indent-of-block-opener))))
+                       (setq ind (krl-indent-of-matching))))
+                    (t
+                     (progn
+                                        ;(message "other")
+                       ;; ;(message krl-indent-regex-toplevel-block-open)
+                       ;; (indent-line-to (krl-find-hinted-indent))))
+                       (let ((hinted-indent (krl-find-hinted-indent)))
+                         (when (not hinted-indent)
+                           (setq hinted-indent 0))
+                         (setq ind hinted-indent))))
+                    ))))))
+    (indent-and-position ind)))
 
 
 (defun krl-mode ()
@@ -319,6 +347,9 @@
   (set (make-local-variable 'indent-line-function) 'krl-indent-line)
   (setq major-mode 'krl-mode)
   (setq mode-name "KRL")
-  (run-hooks 'krl-mode-hook))
+  (run-hooks 'krl-mode-hook)
+  (setq-local comment-start ";")
+  (setq-local comment-end "")
+  (setq-local comment-start-skip ";+\\s-*"))
 
 (provide 'krl-mode)