;;; octave-mod.el --- editing Octave source files under Emacs
-;; Copyright (C) 1997, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1997, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+;; 2009, 2010, 2011 Free Software Foundation, Inc.
;; Author: Kurt Hornik <Kurt.Hornik@wu-wien.ac.at>
;; Author: John Eaton <jwe@octave.org>
'(3 font-lock-function-name-face nil t)))
"Additional Octave expressions to highlight.")
-(defvar octave-font-lock-syntactic-keywords
+(defun octave-syntax-propertize-function (start end)
+ (goto-char start)
+ (octave-syntax-propertize-sqs end)
+ (funcall (syntax-propertize-rules
;; Try to distinguish the string-quotes from the transpose-quotes.
- '(("[[({,; ]\\('\\)" (1 "\"'"))
- (octave-font-lock-close-quotes)))
-
-(defun octave-font-lock-close-quotes (limit)
- "Fix the syntax-table of the closing quotes of single-quote strings."
- ;; Freely inspired from perl-font-lock-special-syntactic-constructs.
- (let ((state (syntax-ppss)))
- (while (< (point) limit)
- (cond
- ((eq (nth 3 state) ?\')
+ ("[[({,; ]\\('\\)"
+ (1 (prog1 "\"'" (octave-syntax-propertize-sqs end)))))
+ (point) end))
+
+(defun octave-syntax-propertize-sqs (end)
+ "Propertize the content/end of single-quote strings."
+ (when (eq (nth 3 (syntax-ppss)) ?\')
;; A '..' string.
- (save-excursion
- (when (and (or (looking-at "\\('\\)")
- (re-search-forward "[^\\]\\(?:\\\\\\\\\\)*\\('\\)"
- nil t))
- (not (eobp)))
+ (when (re-search-forward
+ "\\(?:\\=\\|[^']\\)\\(?:''\\)*\\('\\)\\($\\|[^']\\)" end 'move)
+ (goto-char (match-beginning 2))
+ (when (eq (char-before (match-beginning 1)) ?\\)
+ ;; Backslash cannot escape a single quote.
+ (put-text-property (1- (match-beginning 1)) (match-beginning 1)
+ 'syntax-table (string-to-syntax ".")))
(put-text-property (match-beginning 1) (match-end 1)
- 'syntax-table (string-to-syntax "\"'"))))))
-
- (setq state (parse-partial-sexp (point) limit nil nil state
- 'syntax-table)))))
+ 'syntax-table (string-to-syntax "\"'")))))
(defcustom inferior-octave-buffer "*Inferior Octave*"
"Name of buffer for running an inferior Octave process."
(defvar octave-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "`" 'octave-abbrev-start)
- (define-key map ";" 'octave-electric-semi)
- (define-key map " " 'octave-electric-space)
- (define-key map "\n" 'octave-reindent-then-newline-and-indent)
(define-key map "\e\n" 'octave-indent-new-comment-line)
(define-key map "\M-\C-q" 'octave-indent-defun)
(define-key map "\C-c\C-b" 'octave-submit-bug-report)
(define-key map "\C-c\C-n" 'octave-next-code-line)
(define-key map "\C-c\C-a" 'octave-beginning-of-line)
(define-key map "\C-c\C-e" 'octave-end-of-line)
- (define-key map "\C-c\M-\C-d" 'octave-down-block)
+ (define-key map [remap down-list] 'smie-down-list)
(define-key map "\C-c\M-\C-h" 'octave-mark-block)
(define-key map "\C-c]" 'smie-close-block)
(define-key map "\C-c/" 'smie-close-block)
["End of Continuation" octave-end-of-line t]
["Split Line at Point" octave-indent-new-comment-line t])
("Blocks"
- ["Down Block" octave-down-block t]
["Mark Block" octave-mark-block t]
["Close Block" smie-close-block t])
("Functions"
table)
"Syntax table in use in `octave-mode' buffers.")
-(defcustom octave-auto-indent nil
- "Non-nil means indent line after a semicolon or space in Octave mode."
- :type 'boolean
- :group 'octave)
-
-(defcustom octave-auto-newline nil
- "Non-nil means automatically newline after a semicolon in Octave mode."
- :type 'boolean
- :group 'octave)
-
(defcustom octave-blink-matching-block t
"Control the blinking of matching Octave block keywords.
Non-nil means show matching begin of block when inserting a space,
:type 'integer
:group 'octave)
-(defvar octave-block-begin-regexp
- (concat "\\<\\("
- (mapconcat 'identity octave-begin-keywords "\\|")
- "\\)\\>"))
-(defvar octave-block-else-regexp
- (concat "\\<\\("
- (mapconcat 'identity octave-else-keywords "\\|")
- "\\)\\>"))
-(defvar octave-block-end-regexp
- (concat "\\<\\("
- (mapconcat 'identity octave-end-keywords "\\|")
- "\\)\\>"))
-(defvar octave-block-begin-or-end-regexp
- (concat octave-block-begin-regexp "\\|" octave-block-end-regexp))
-(defvar octave-block-else-or-end-regexp
- (concat octave-block-else-regexp "\\|" octave-block-end-regexp))
-(defvar octave-block-match-alist
- '(("do" . ("until"))
- ("for" . ("end" "endfor"))
- ("function" . ("end" "endfunction"))
- ("if" . ("else" "elseif" "end" "endif"))
- ("switch" . ("case" "otherwise" "end" "endswitch"))
- ("try" . ("catch" "end" "end_try_catch"))
- ("unwind_protect" . ("unwind_protect_cleanup" "end" "end_unwind_protect"))
- ("while" . ("end" "endwhile")))
- "Alist with Octave's matching block keywords.
-Has Octave's begin keywords as keys and a list of the matching else or
-end keywords as associated values.")
-
(defvar octave-block-comment-start
(concat (make-string 2 octave-comment-char) " ")
"String to insert to start a new Octave comment on an empty line.")
;; could be convenient to treat it as one.
(assoc "...")))
-(defconst octave-smie-op-levels
- (smie-prec2-levels
+(defconst octave-smie-bnf-table
+ '((atom)
+ ;; We can't distinguish the first element in a sequence with
+ ;; precedence grammars, so we can't distinguish the condition
+ ;; if the `if' from the subsequent body, for example.
+ ;; This has to be done later in the indentation rules.
+ (exp (exp "\n" exp)
+ ;; We need to mention at least one of the operators in this part
+ ;; of the grammar: if the BNF and the operator table have
+ ;; no overlap, SMIE can't know how they relate.
+ (exp ";" exp)
+ ("try" exp "catch" exp "end_try_catch")
+ ("try" exp "catch" exp "end")
+ ("unwind_protect" exp
+ "unwind_protect_cleanup" exp "end_unwind_protect")
+ ("unwind_protect" exp "unwind_protect_cleanup" exp "end")
+ ("for" exp "endfor")
+ ("for" exp "end")
+ ("do" exp "until" atom)
+ ("while" exp "endwhile")
+ ("while" exp "end")
+ ("if" exp "endif")
+ ("if" exp "else" exp "endif")
+ ("if" exp "elseif" exp "else" exp "endif")
+ ("if" exp "elseif" exp "elseif" exp "else" exp "endif")
+ ("if" exp "elseif" exp "elseif" exp "else" exp "end")
+ ("switch" exp "case" exp "endswitch")
+ ("switch" exp "case" exp "otherwise" exp "endswitch")
+ ("switch" exp "case" exp "case" exp "otherwise" exp "endswitch")
+ ("switch" exp "case" exp "case" exp "otherwise" exp "end")
+ ("function" exp "endfunction")
+ ("function" exp "end"))
+ ;; (fundesc (atom "=" atom))
+ ))
+
+(defconst octave-smie-grammar
+ (smie-prec2->grammar
(smie-merge-prec2s
- (smie-bnf-precedence-table
- '((atom)
- ;; We can't distinguish the first element in a sequence with
- ;; precedence grammars, so we can't distinguish the condition
- ;; if the `if' from the subsequent body, for example.
- ;; This has to be done later in the indentation rules.
- (exp (exp "\n" exp)
- ;; We need to mention at least one of the operators in this part
- ;; of the grammar: if the BNF and the operator table have
- ;; no overlap, SMIE can't know how they relate.
- (exp ";" exp)
- ("try" exp "catch" exp "end_try_catch")
- ("try" exp "catch" exp "end")
- ("unwind_protect" exp
- "unwind_protect_cleanup" exp "end_unwind_protect")
- ("unwind_protect" exp "unwind_protect_cleanup" exp "end")
- ("for" exp "endfor")
- ("for" exp "end")
- ("do" exp "until" atom)
- ("while" exp "endwhile")
- ("while" exp "end")
- ("if" exp "endif")
- ("if" exp "else" exp "endif")
- ("if" exp "elseif" exp "else" exp "endif")
- ("if" exp "elseif" exp "elseif" exp "else" exp "endif")
- ("if" exp "elseif" exp "elseif" exp "else" exp "end")
- ("switch" exp "case" exp "endswitch")
- ("switch" exp "case" exp "otherwise" exp "endswitch")
- ("switch" exp "case" exp "case" exp "otherwise" exp "endswitch")
- ("switch" exp "case" exp "case" exp "otherwise" exp "end")
- ("function" exp "endfunction")
- ("function" exp "end"))
- ;; (fundesc (atom "=" atom))
- )
- '((assoc "\n" ";")))
-
- (smie-precs-precedence-table
- (append octave-operator-table
- '((nonassoc " -dummy- "))) ;Bogus anchor at the end.
- ))))
+ (smie-bnf->prec2 octave-smie-bnf-table
+ '((assoc "\n" ";")))
+
+ (smie-precs->prec2 octave-operator-table))))
;; Tokenizing needs to be refined so that ";;" is treated as two
;; tokens and also so as to recognize the \n separator (and
(t
(smie-default-forward-token))))
-(defconst octave-smie-indent-rules
- '((";"
- (:parent ("function" "if" "while" "else" "elseif" "for" "otherwise"
- "case" "try" "catch" "unwind_protect" "unwind_protect_cleanup")
- ;; FIXME: don't hardcode 2.
- (+ parent octave-block-offset))
- ;; (:parent "switch" 4) ;For (invalid) code between switch and case.
- 0)
- ((:before . "case") octave-block-offset)))
+(defun octave-smie-rules (kind token)
+ (pcase (cons kind token)
+ ;; We could set smie-indent-basic instead, but that would have two
+ ;; disadvantages:
+ ;; - changes to octave-block-offset wouldn't take effect immediately.
+ ;; - edebug wouldn't show the use of this variable.
+ (`(:elem . basic) octave-block-offset)
+ ;; Since "case" is in the same BNF rules as switch..end, SMIE by default
+ ;; aligns it with "switch".
+ (`(:before . "case") (if (not (smie-rule-sibling-p)) octave-block-offset))
+ (`(:after . ";")
+ (if (smie-rule-parent-p "function" "if" "while" "else" "elseif" "for"
+ "otherwise" "case" "try" "catch" "unwind_protect"
+ "unwind_protect_cleanup")
+ (smie-rule-parent octave-block-offset)
+ ;; For (invalid) code between switch and case.
+ ;; (if (smie-parent-p "switch") 4)
+ 0))))
+
+(defvar electric-layout-rules)
;;;###autoload
(define-derived-mode octave-mode prog-mode "Octave"
Variables you can use to customize Octave mode
==============================================
-`octave-auto-indent'
- Non-nil means indent current line after a semicolon or space.
- Default is nil.
-
-`octave-auto-newline'
- Non-nil means auto-insert a newline and indent after a semicolon.
- Default is nil.
-
`octave-blink-matching-block'
Non-nil means show matching begin of block when inserting a space,
newline or semicolon after an else or end keyword. Default is t.
including a reproducible test case and send the message."
(setq local-abbrev-table octave-abbrev-table)
- (smie-setup octave-smie-op-levels octave-smie-indent-rules)
+ (smie-setup octave-smie-grammar #'octave-smie-rules
+ :forward-token #'octave-smie-forward-token
+ :backward-token #'octave-smie-backward-token)
(set (make-local-variable 'smie-indent-basic) 'octave-block-offset)
- (set (make-local-variable 'smie-backward-token-function)
- 'octave-smie-backward-token)
- (set (make-local-variable 'smie-forward-token-function)
- 'octave-smie-forward-token)
- (set (make-local-variable 'forward-sexp-function)
- 'smie-forward-sexp-command)
- (set (make-local-variable 'smie-closer-alist)
- (mapcar (lambda (elem) (cons (car elem) (car (last elem))))
- octave-block-match-alist))
+
+ (set (make-local-variable 'smie-blink-matching-triggers)
+ (cons ?\; smie-blink-matching-triggers))
+ (unless octave-blink-matching-block
+ (remove-hook 'post-self-insert-hook #'smie-blink-matching-open 'local))
+
+ (set (make-local-variable 'electric-indent-chars)
+ (cons ?\; electric-indent-chars))
+ ;; IIUC matlab-mode takes the opposite approach: it makes RET insert
+ ;; a ";" at those places where it's correct (i.e. outside of parens).
+ (set (make-local-variable 'electric-layout-rules) '((?\; . after)))
(set (make-local-variable 'comment-start) octave-comment-start)
(set (make-local-variable 'comment-end) "")
(set (make-local-variable 'normal-auto-fill-function) 'octave-auto-fill)
(set (make-local-variable 'font-lock-defaults)
- '(octave-font-lock-keywords nil nil nil nil
- (font-lock-syntactic-keywords . octave-font-lock-syntactic-keywords)
- (parse-sexp-lookup-properties . t)))
+ '(octave-font-lock-keywords))
+
+ (set (make-local-variable 'syntax-propertize-function)
+ #'octave-syntax-propertize-function)
(set (make-local-variable 'imenu-generic-expression)
octave-mode-imenu-generic-expression)
'octave-beginning-of-defun)
(easy-menu-add octave-mode-menu)
- (octave-initialize-completions)
- (run-mode-hooks 'octave-mode-hook))
+ (octave-initialize-completions))
(defvar info-lookup-mode)
(let ((pps (parse-partial-sexp (line-beginning-position) (point))))
(not (or (nth 3 pps) (nth 4 pps)))))
-(defun octave-in-block-p ()
- "Return t if point is inside an Octave block.
-The block is taken to start at the first letter of the begin keyword and
-to end after the end keyword."
- (let ((pos (point)))
- (save-excursion
- (condition-case nil
- (progn
- (skip-syntax-forward "w")
- (octave-up-block -1)
- (octave-forward-block)
- t)
- (error nil))
- (< pos (point)))))
(defun octave-looking-at-kw (regexp)
"Like `looking-at', but sets `case-fold-search' nil."
(let ((case-fold-search nil))
(looking-at regexp)))
-(defun octave-re-search-forward-kw (regexp count)
- "Like `re-search-forward', but sets `case-fold-search' nil, and moves point."
- (let ((case-fold-search nil))
- (re-search-forward regexp nil 'move count)))
-
-(defun octave-re-search-backward-kw (regexp count)
- "Like `re-search-backward', but sets `case-fold-search' nil, and moves point."
- (let ((case-fold-search nil))
- (re-search-backward regexp nil 'move count)))
-
(defun octave-maybe-insert-continuation-string ()
(if (or (octave-in-comment-p)
(save-excursion
\f
;;; Indentation
-(defun octave-indent-calculate ()
- "Return appropriate indentation for current line as Octave code.
-Returns an integer (the column to indent to) unless the line is a
-comment line with fixed goal golumn. In that case, returns a list whose
-car is the column to indent to, and whose cdr is the current indentation
-level."
- (let ((is-continuation-line
- (save-excursion
- (if (zerop (octave-previous-code-line))
- (looking-at octave-continuation-regexp))))
- (icol 0))
- (save-excursion
- (beginning-of-line)
- ;; If we can move backward out one level of parentheses, take 1
- ;; plus the indentation of that parenthesis. Otherwise, go back
- ;; to the beginning of the previous code line, and compute the
- ;; offset this line gives.
- (if (condition-case nil
- (progn
- (up-list -1)
- t)
- (error nil))
- (setq icol (+ 1 (current-column)))
- (if (zerop (octave-previous-code-line))
- (progn
- (octave-beginning-of-line)
- (back-to-indentation)
- (setq icol (current-column))
- (let ((bot (point))
- (eol (line-end-position)))
- (while (< (point) eol)
- (if (octave-not-in-string-or-comment-p)
- (cond
- ((octave-looking-at-kw "\\<switch\\>")
- (setq icol (+ icol (* 2 octave-block-offset))))
- ((octave-looking-at-kw octave-block-begin-regexp)
- (setq icol (+ icol octave-block-offset)))
- ((octave-looking-at-kw octave-block-else-regexp)
- (if (= bot (point))
- (setq icol (+ icol octave-block-offset))))
- ((octave-looking-at-kw octave-block-end-regexp)
- (if (and (not (= bot (point)))
- ;; special case for `end' keyword,
- ;; applied to all keywords
- (not (octave-end-as-array-index-p)))
- (setq icol (- icol
- (octave-block-end-offset)))))))
- (forward-char)))
- (if is-continuation-line
- (setq icol (+ icol octave-continuation-offset)))))))
- (save-excursion
- (back-to-indentation)
- (cond
- ((and (octave-looking-at-kw octave-block-else-regexp)
- (octave-not-in-string-or-comment-p))
- (setq icol (- icol octave-block-offset)))
- ((and (octave-looking-at-kw octave-block-end-regexp)
- (octave-not-in-string-or-comment-p))
- (setq icol (- icol (octave-block-end-offset))))
- ((or (looking-at "\\s<\\s<\\s<\\S<")
- (octave-before-magic-comment-p))
- (setq icol (list 0 icol)))
- ((looking-at "\\s<\\S<")
- (setq icol (list comment-column icol)))))
- icol))
-
-;; FIXME: this should probably also make sure we are actually looking
-;; at the "end" keyword.
-(defun octave-end-as-array-index-p ()
- (save-excursion
- (condition-case nil
- ;; Check if point is between parens
- (progn (up-list 1) t)
- (error nil))))
-
-(defun octave-block-end-offset ()
- (save-excursion
- (octave-backward-up-block 1)
- (* octave-block-offset
- (if (string-match (match-string 0) "switch") 2 1))))
-
-(defun octave-before-magic-comment-p ()
- (save-excursion
- (beginning-of-line)
- (and (bobp) (looking-at "\\s-*#!"))))
-
-(defun octave-indent-line (&optional arg)
- "Indent current line as Octave code.
-With optional ARG, use this as offset unless this line is a comment with
-fixed goal column."
- (interactive)
- (or arg (setq arg 0))
- (let ((icol (octave-indent-calculate))
- (relpos (- (current-column) (current-indentation))))
- (if (listp icol)
- (setq icol (car icol))
- (setq icol (+ icol arg)))
- (if (< icol 0)
- (error "Unmatched end keyword")
- (indent-line-to icol)
- (if (> relpos 0)
- (move-to-column (+ icol relpos))))))
(defun octave-indent-new-comment-line ()
"Break Octave line at point, continuing comment if within one.
(error "Cannot split a code line inside a string"))
(t
(insert (concat " " octave-continuation-string))
- (octave-reindent-then-newline-and-indent))))
+ (reindent-then-newline-and-indent))))
(defun octave-indent-defun ()
"Properly indent the Octave function which contains point."
(zerop (forward-line 1)))))
(end-of-line)))
-(defun octave-scan-blocks (count depth)
- "Scan from point by COUNT Octave begin-end blocks.
-Returns the character number of the position thus found.
-
-If DEPTH is nonzero, block depth begins counting from that value.
-Only places where the depth in blocks becomes zero are candidates for
-stopping; COUNT such places are counted.
-
-If the beginning or end of the buffer is reached and the depth is wrong,
-an error is signaled."
- (let ((min-depth (if (> depth 0) 0 depth))
- (inc (if (> count 0) 1 -1)))
- (save-excursion
- (while (/= count 0)
- (catch 'foo
- (while (or (octave-re-search-forward-kw
- octave-block-begin-or-end-regexp inc)
- (if (/= depth 0)
- (error "Unbalanced block")))
- (if (octave-not-in-string-or-comment-p)
- (progn
- (cond
- ((match-end 1)
- (setq depth (+ depth inc)))
- ((match-end 2)
- (setq depth (- depth inc))))
- (if (< depth min-depth)
- (error "Containing expression ends prematurely"))
- (if (= depth 0)
- (throw 'foo nil))))))
- (setq count (- count inc)))
- (point))))
-
-(defun octave-forward-block (&optional arg)
- "Move forward across one balanced Octave begin-end block.
-With argument, do it that many times.
-Negative arg -N means move backward across N blocks."
- (interactive "p")
- (or arg (setq arg 1))
- (goto-char (or (octave-scan-blocks arg 0) (buffer-end arg))))
-
-(defun octave-backward-block (&optional arg)
- "Move backward across one balanced Octave begin-end block.
-With argument, do it that many times.
-Negative arg -N means move forward across N blocks."
- (interactive "p")
- (or arg (setq arg 1))
- (octave-forward-block (- arg)))
-
-(defun octave-down-block (arg)
- "Move forward down one begin-end block level of Octave code.
-With argument, do this that many times.
-A negative argument means move backward but still go down a level.
-In Lisp programs, an argument is required."
- (interactive "p")
- (let ((inc (if (> arg 0) 1 -1)))
- (while (/= arg 0)
- (goto-char (or (octave-scan-blocks inc -1)
- (buffer-end arg)))
- (setq arg (- arg inc)))))
-
-(defun octave-backward-up-block (arg)
- "Move backward out of one begin-end block level of Octave code.
-With argument, do this that many times.
-A negative argument means move forward but still to a less deep spot.
-In Lisp programs, an argument is required."
- (interactive "p")
- (octave-up-block (- arg)))
-
-(defun octave-up-block (arg)
- "Move forward out of one begin-end block level of Octave code.
-With argument, do this that many times.
-A negative argument means move backward but still to a less deep spot.
-In Lisp programs, an argument is required."
- (interactive "p")
- (let ((inc (if (> arg 0) 1 -1)))
- (while (/= arg 0)
- (goto-char (or (octave-scan-blocks inc 1)
- (buffer-end arg)))
- (setq arg (- arg inc)))))
-
(defun octave-mark-block ()
"Put point at the beginning of this Octave block, mark at the end.
The block marked is the one that contains point or follows point."
(interactive)
- (let ((pos (point)))
- (if (or (and (octave-in-block-p)
- (skip-syntax-forward "w"))
- (condition-case nil
- (progn
- (octave-down-block 1)
- (octave-in-block-p))
- (error nil)))
- (progn
- (octave-up-block -1)
- (push-mark (point))
- (octave-forward-block)
- (exchange-point-and-mark))
- (goto-char pos)
- (message "No block to mark found"))))
-
-(defun octave-blink-matching-block-open ()
- "Blink the matching Octave begin block keyword.
-If point is right after an Octave else or end type block keyword, move
-cursor momentarily to the corresponding begin keyword.
-Signal an error if the keywords are incompatible."
- (interactive)
- (let (bb-keyword bb-arg eb-keyword pos eol)
- (if (and (octave-not-in-string-or-comment-p)
- (looking-at "\\>")
- (save-excursion
- (skip-syntax-backward "w")
- (octave-looking-at-kw octave-block-else-or-end-regexp)))
- (save-excursion
- (cond
- ((match-end 1)
- (setq eb-keyword
- (buffer-substring-no-properties
- (match-beginning 1) (match-end 1)))
- (octave-backward-up-block 1))
- ((match-end 2)
- (setq eb-keyword
- (buffer-substring-no-properties
- (match-beginning 2) (match-end 2)))
- (octave-backward-block)))
- (setq pos (match-end 0)
- bb-keyword
- (buffer-substring-no-properties
- (match-beginning 0) pos)
- pos (+ pos 1)
- eol (line-end-position)
- bb-arg
- (save-excursion
- (save-restriction
- (goto-char pos)
- (while (and (skip-syntax-forward "^<" eol)
- (octave-in-string-p)
- (not (forward-char 1))))
- (skip-syntax-backward " ")
- (buffer-substring-no-properties pos (point)))))
- (if (member eb-keyword
- (cdr (assoc bb-keyword octave-block-match-alist)))
- (progn
- (message "Matches `%s %s'" bb-keyword bb-arg)
- (if (pos-visible-in-window-p)
- (sit-for blink-matching-delay)))
- (error "Block keywords `%s' and `%s' do not match"
- bb-keyword eb-keyword))))))
+ (unless (or (looking-at "\\s(")
+ (save-excursion
+ (let* ((token (funcall smie-forward-token-function))
+ (level (assoc token smie-grammar)))
+ (and level (null (cadr level))))))
+ (backward-up-list 1))
+ (mark-sexp))
(defun octave-beginning-of-defun (&optional arg)
"Move backward to the beginning of an Octave function.
(not give-up))))
(defun octave-fill-paragraph (&optional arg)
- "Fill paragraph of Octave code, handling Octave comments."
- ;; FIXME: now that the default fill-paragraph takes care of similar issues,
- ;; this seems obsolete. --Stef
- (interactive "P")
- (save-excursion
- (let ((end (progn (forward-paragraph) (point)))
- (beg (progn
- (forward-paragraph -1)
- (skip-chars-forward " \t\n")
- (beginning-of-line)
- (point)))
- (cfc (current-fill-column))
- (ind (octave-indent-calculate))
- comment-prefix)
- (save-restriction
- (goto-char beg)
- (narrow-to-region beg end)
- (if (listp ind) (setq ind (nth 1 ind)))
- (while (not (eobp))
- (condition-case nil
- (octave-indent-line ind)
- (error nil))
- (if (and (> ind 0)
- (not
- (save-excursion
- (beginning-of-line)
- (looking-at "^\\s-*\\($\\|\\s<+\\)"))))
- (setq ind 0))
- (move-to-column cfc)
- ;; First check whether we need to combine non-empty comment lines
- (if (and (< (current-column) cfc)
- (octave-in-comment-p)
- (not (save-excursion
- (beginning-of-line)
- (looking-at "^\\s-*\\s<+\\s-*$"))))
- ;; This is a nonempty comment line which does not extend
- ;; past the fill column. If it is followed by a nonempty
- ;; comment line with the same comment prefix, try to
- ;; combine them, and repeat this until either we reach the
- ;; fill-column or there is nothing more to combine.
- (progn
- ;; Get the comment prefix
- (save-excursion
- (beginning-of-line)
- (while (and (re-search-forward "\\s<+")
- (not (octave-in-comment-p))))
- (setq comment-prefix (match-string 0)))
- ;; And keep combining ...
- (while (and (< (current-column) cfc)
- (save-excursion
- (forward-line 1)
- (and (looking-at
- (concat "^\\s-*"
- comment-prefix
- "\\S<"))
- (not (looking-at
- (concat "^\\s-*"
- comment-prefix
- "\\s-*$"))))))
- (delete-char 1)
- (re-search-forward comment-prefix)
- (delete-region (match-beginning 0) (match-end 0))
- (fixup-whitespace)
- (move-to-column cfc))))
- ;; We might also try to combine continued code lines> Perhaps
- ;; some other time ...
- (skip-chars-forward "^ \t\n")
- (delete-horizontal-space)
- (if (or (< (current-column) cfc)
- (and (= (current-column) cfc) (eolp)))
- (forward-line 1)
- (if (not (eolp)) (insert " "))
- (or (octave-auto-fill)
- (forward-line 1)))))
- t)))
+ "Fill paragraph of Octave code, handling Octave comments."
+ ;; FIXME: difference with generic fill-paragraph:
+ ;; - code lines are only split, never joined.
+ ;; - \n that end comments are never removed.
+ ;; - insert continuation marker when splitting code lines.
+ (interactive "P")
+ (save-excursion
+ (let ((end (progn (forward-paragraph) (copy-marker (point) t)))
+ (beg (progn
+ (forward-paragraph -1)
+ (skip-chars-forward " \t\n")
+ (beginning-of-line)
+ (point)))
+ (cfc (current-fill-column))
+ comment-prefix)
+ (goto-char beg)
+ (while (< (point) end)
+ (condition-case nil
+ (indent-according-to-mode)
+ (error nil))
+ (move-to-column cfc)
+ ;; First check whether we need to combine non-empty comment lines
+ (if (and (< (current-column) cfc)
+ (octave-in-comment-p)
+ (not (save-excursion
+ (beginning-of-line)
+ (looking-at "^\\s-*\\s<+\\s-*$"))))
+ ;; This is a nonempty comment line which does not extend
+ ;; past the fill column. If it is followed by a nonempty
+ ;; comment line with the same comment prefix, try to
+ ;; combine them, and repeat this until either we reach the
+ ;; fill-column or there is nothing more to combine.
+ (progn
+ ;; Get the comment prefix
+ (save-excursion
+ (beginning-of-line)
+ (while (and (re-search-forward "\\s<+")
+ (not (octave-in-comment-p))))
+ (setq comment-prefix (match-string 0)))
+ ;; And keep combining ...
+ (while (and (< (current-column) cfc)
+ (save-excursion
+ (forward-line 1)
+ (and (looking-at
+ (concat "^\\s-*"
+ comment-prefix
+ "\\S<"))
+ (not (looking-at
+ (concat "^\\s-*"
+ comment-prefix
+ "\\s-*$"))))))
+ (delete-char 1)
+ (re-search-forward comment-prefix)
+ (delete-region (match-beginning 0) (match-end 0))
+ (fixup-whitespace)
+ (move-to-column cfc))))
+ ;; We might also try to combine continued code lines> Perhaps
+ ;; some other time ...
+ (skip-chars-forward "^ \t\n")
+ (delete-horizontal-space)
+ (if (or (< (current-column) cfc)
+ (and (= (current-column) cfc) (eolp)))
+ (forward-line 1)
+ (if (not (eolp)) (insert " "))
+ (or (octave-auto-fill)
+ (forward-line 1))))
+ t)))
\f
;;; Completions
(apply 'completion-in-region (octave-completion-at-point-function)))
\f
;;; Electric characters && friends
-(defun octave-reindent-then-newline-and-indent ()
- "Reindent current Octave line, insert newline, and indent the new line.
-If Abbrev mode is on, expand abbrevs first."
- ;; FIXME: None of this is Octave-specific.
- (interactive)
- (if abbrev-mode (expand-abbrev))
- (if octave-blink-matching-block
- (octave-blink-matching-block-open))
- (reindent-then-newline-and-indent))
-
-(defun octave-electric-semi ()
- "Insert a semicolon in Octave mode.
-Maybe expand abbrevs and blink matching block open keywords.
-Reindent the line if `octave-auto-indent' is non-nil.
-Insert a newline if `octave-auto-newline' is non-nil."
- (interactive)
- (if (not (octave-not-in-string-or-comment-p))
- (insert ";")
- (if abbrev-mode (expand-abbrev))
- (if octave-blink-matching-block
- (octave-blink-matching-block-open))
- (if octave-auto-indent
- (indent-according-to-mode))
- (insert ";")
- (if octave-auto-newline
- (newline-and-indent))))
-
-(defun octave-electric-space ()
- "Insert a space in Octave mode.
-Maybe expand abbrevs and blink matching block open keywords.
-Reindent the line if `octave-auto-indent' is non-nil."
- (interactive)
- (setq last-command-event ? )
- (if (and octave-auto-indent
- (not (octave-not-in-string-or-comment-p)))
- (progn
- (indent-according-to-mode)
- (self-insert-command 1))
- (if abbrev-mode (expand-abbrev))
- (if octave-blink-matching-block
- (octave-blink-matching-block-open))
- (if (and octave-auto-indent
- (save-excursion
- (skip-syntax-backward " ")
- (not (bolp))))
- (indent-according-to-mode))
- (self-insert-command 1)))
(defun octave-abbrev-start ()
"Start entering an Octave abbreviation.
octave-maintainer-address
(concat "Emacs version " emacs-version)
(list
- 'octave-auto-indent
- 'octave-auto-newline
'octave-blink-matching-block
'octave-block-offset
'octave-comment-char
(provide 'octave-mod)
-;; arch-tag: 05f1ce09-be87-4c00-803e-4919ffa26c23
;;; octave-mod.el ends here
HCoop / bpt / emacs.git / blobdiff