;;; icon.el --- mode for editing Icon code
-;; Author: Chris Smith <convex!csmith>
-;; Created: 15 Feb 89
-;; Last-Modified: 06 Mar 1991
+;; Copyright (C) 1989, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+;; Free Software Foundation, Inc.
-;; Copyright (C) 1989 Free Software Foundation, Inc.
+;; Author: Chris Smith <csmith@convex.com>
+;; Created: 15 Feb 89
+;; Keywords: languages
;; This file is part of GNU Emacs.
;; GNU Emacs 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 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
-;; Note: use
-;; (autoload 'icon-mode "icon" nil t)
-;; (setq auto-mode-alist (cons '("\\.icn$" . icon-mode) auto-mode-alist))
-;; if not permanently installed in your emacs
+;; A major mode for editing the Icon programming language.
;;; Code:
"Keymap used in Icon mode.")
(if icon-mode-map
()
- (setq icon-mode-map (make-sparse-keymap))
- (define-key icon-mode-map "{" 'electric-icon-brace)
- (define-key icon-mode-map "}" 'electric-icon-brace)
- (define-key icon-mode-map "\e\C-h" 'mark-icon-function)
- (define-key icon-mode-map "\e\C-a" 'beginning-of-icon-defun)
- (define-key icon-mode-map "\e\C-e" 'end-of-icon-defun)
- (define-key icon-mode-map "\e\C-q" 'indent-icon-exp)
- (define-key icon-mode-map "\177" 'backward-delete-char-untabify)
- (define-key icon-mode-map "\t" 'icon-indent-command))
+ (let ((map (make-sparse-keymap "Icon")))
+ (setq icon-mode-map (make-sparse-keymap))
+ (define-key icon-mode-map "{" 'electric-icon-brace)
+ (define-key icon-mode-map "}" 'electric-icon-brace)
+ (define-key icon-mode-map "\e\C-h" 'mark-icon-function)
+ (define-key icon-mode-map "\e\C-a" 'beginning-of-icon-defun)
+ (define-key icon-mode-map "\e\C-e" 'end-of-icon-defun)
+ (define-key icon-mode-map "\e\C-q" 'indent-icon-exp)
+ (define-key icon-mode-map "\177" 'backward-delete-char-untabify)
+
+ (define-key icon-mode-map [menu-bar] (make-sparse-keymap "Icon"))
+ (define-key icon-mode-map [menu-bar icon]
+ (cons "Icon" map))
+ (define-key map [beginning-of-icon-defun] '("Beginning of function" . beginning-of-icon-defun))
+ (define-key map [end-of-icon-defun] '("End of function" . end-of-icon-defun))
+ (define-key map [comment-region] '("Comment Out Region" . comment-region))
+ (define-key map [indent-region] '("Indent Region" . indent-region))
+ (define-key map [indent-line] '("Indent Line" . icon-indent-command))
+ (put 'eval-region 'menu-enable 'mark-active)
+ (put 'comment-region 'menu-enable 'mark-active)
+ (put 'indent-region 'menu-enable 'mark-active)))
(defvar icon-mode-syntax-table nil
"Syntax table in use in Icon-mode buffers.")
(modify-syntax-entry ?| "." icon-mode-syntax-table)
(modify-syntax-entry ?\' "\"" icon-mode-syntax-table))
-(defconst icon-indent-level 4
- "*Indentation of Icon statements with respect to containing block.")
-(defconst icon-brace-imaginary-offset 0
- "*Imagined indentation of a Icon open brace that actually follows a statement.")
-(defconst icon-brace-offset 0
- "*Extra indentation for braces, compared with other text in same context.")
-(defconst icon-continued-statement-offset 4
- "*Extra indent for lines not starting new statements.")
-(defconst icon-continued-brace-offset 0
- "*Extra indent for substatements that start with open-braces.
-This is in addition to icon-continued-statement-offset.")
-
-(defconst icon-auto-newline nil
- "*Non-nil means automatically newline before and after braces
-inserted in Icon code.")
-
-(defconst icon-tab-always-indent t
- "*Non-nil means TAB in Icon mode should always reindent the current line,
-regardless of where in the line point is when the TAB command is used.")
+(defgroup icon nil
+ "Mode for editing Icon code."
+ :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
+ :group 'languages)
+
+(defcustom icon-indent-level 4
+ "*Indentation of Icon statements with respect to containing block."
+ :type 'integer
+ :group 'icon)
+
+(defcustom icon-brace-imaginary-offset 0
+ "*Imagined indentation of a Icon open brace that actually follows a statement."
+ :type 'integer
+ :group 'icon)
+
+(defcustom icon-brace-offset 0
+ "*Extra indentation for braces, compared with other text in same context."
+ :type 'integer
+ :group 'icon)
+
+(defcustom icon-continued-statement-offset 4
+ "*Extra indent for Icon lines not starting new statements."
+ :type 'integer
+ :group 'icon)
+
+(defcustom icon-continued-brace-offset 0
+ "*Extra indent for Icon substatements that start with open-braces.
+This is in addition to `icon-continued-statement-offset'."
+ :type 'integer
+ :group 'icon)
+
+(defcustom icon-auto-newline nil
+ "*Non-nil means automatically newline before and after braces Icon code.
+This applies when braces are inserted."
+ :type 'boolean
+ :group 'icon)
+
+(defcustom icon-tab-always-indent t
+ "*Non-nil means TAB in Icon mode should always reindent the current line.
+It will then reindent, regardless of where in the line point is
+when the TAB command is used."
+ :type 'boolean
+ :group 'icon)
+
+(defvar icon-imenu-generic-expression
+ '((nil "^[ \t]*procedure[ \t]+\\(\\sw+\\)[ \t]*(" 1))
+ "Imenu expression for Icon mode. See `imenu-generic-expression'.")
+
+
\f
+;;;###autoload
(defun icon-mode ()
"Major mode for editing Icon code.
Expression and list commands understand all Icon brackets.
(setq local-abbrev-table icon-mode-abbrev-table)
(set-syntax-table icon-mode-syntax-table)
(make-local-variable 'paragraph-start)
- (setq paragraph-start (concat "^$\\|" page-delimiter))
+ (setq paragraph-start (concat "$\\|" page-delimiter))
(make-local-variable 'paragraph-separate)
(setq paragraph-separate paragraph-start)
(make-local-variable 'indent-line-function)
(setq indent-line-function 'icon-indent-line)
(make-local-variable 'require-final-newline)
- (setq require-final-newline t)
+ (setq require-final-newline mode-require-final-newline)
(make-local-variable 'comment-start)
(setq comment-start "# ")
(make-local-variable 'comment-end)
(setq comment-end "")
- (make-local-variable 'comment-column)
- (setq comment-column 32)
(make-local-variable 'comment-start-skip)
(setq comment-start-skip "# *")
- (make-local-variable 'comment-indent-hook)
- (setq comment-indent-hook 'icon-comment-indent)
- (run-hooks 'icon-mode-hook))
+ (make-local-variable 'comment-indent-function)
+ (setq comment-indent-function 'icon-comment-indent)
+ (set (make-local-variable 'indent-line-function) 'icon-indent-line)
+ ;; font-lock support
+ (setq font-lock-defaults
+ '((icon-font-lock-keywords
+ icon-font-lock-keywords-1 icon-font-lock-keywords-2)
+ nil nil ((?_ . "w")) beginning-of-defun
+ ;; Obsoleted by Emacs 19.35 parse-partial-sexp's COMMENTSTOP.
+ ;(font-lock-comment-start-regexp . "#")
+ (font-lock-mark-block-function . mark-defun)))
+ ;; imenu support
+ (make-local-variable 'imenu-generic-expression)
+ (setq imenu-generic-expression icon-imenu-generic-expression)
+ ;; hideshow support
+ ;; we start from the assertion that `hs-special-modes-alist' is autoloaded.
+ (unless (assq 'icon-mode hs-special-modes-alist)
+ (setq hs-special-modes-alist
+ (cons '(icon-mode "\\<procedure\\>" "\\<end\\>" nil
+ icon-forward-sexp-function)
+ hs-special-modes-alist)))
+ (run-mode-hooks 'icon-mode-hook))
\f
;; This is used by indent-for-comment to decide how much to
;; indent a comment in Icon code based on its context.
(defun icon-comment-indent ()
- (if (looking-at "^#")
- 0
- (save-excursion
- (skip-chars-backward " \t")
- (max (if (bolp) 0 (1+ (current-column)))
- comment-column))))
+ (if (looking-at "^#") 0 comment-column))
(defun electric-icon-brace (arg)
"Insert character and correct line's indentation."
(self-insert-command (prefix-numeric-value arg)))))
\f
(defun icon-indent-command (&optional whole-exp)
- (interactive "P")
"Indent current line as Icon code, or in some cases insert a tab character.
If `icon-tab-always-indent' is non-nil (the default), always indent current
line. Otherwise, indent the current line only if point is at the left margin
lines of the expression starting after point so that this line becomes
properly indented. The relative indentation among the lines of the
expression are preserved."
+ (interactive "P")
(if whole-exp
;; If arg, always indent this line as Icon
;; and shift remaining lines of expression the same amount.
(setq beg (point))
(cond ((eq indent nil)
(setq indent (current-indentation)))
- ((eq indent t)
- (setq indent (calculate-icon-indent-within-comment)))
- ((looking-at "[ \t]*#")
+ ((looking-at "^#")
(setq indent 0))
(t
(skip-chars-forward " \t")
(progn (forward-word -1) (point))
(progn (forward-word 1) (point)))
icon-resword-alist)
- (not (memq ch '(0 ?\; ?\} ?\{ ?\) ?\] ?\" ?\' ?\n))))))
+ (not (memq ch '(0 ?\; ?\} ?\{ ?\) ?\] ?\" ?\' ?\# ?\, ?\. ?\n))))))
(defun icon-backward-to-noncomment (lim)
(let (opoint stop)
(contain-stack (list (point)))
(case-fold-search nil)
restart outer-loop-done inner-loop-done state ostate
- this-indent last-sexp
+ this-indent last-sexp last-depth
at-else at-brace at-do
(opoint (point))
(next-depth 0))
;; plus enough other lines to get to one that
;; does not end inside a comment or string.
;; Meanwhile, do appropriate indentation on comment lines.
- (setq innerloop-done nil)
- (while (and (not innerloop-done)
+ (setq inner-loop-done nil)
+ (while (and (not inner-loop-done)
(not (and (eobp) (setq outer-loop-done t))))
(setq ostate state)
(setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
(icon-indent-line))
(if (or (nth 3 state))
(forward-line 1)
- (setq innerloop-done t)))
+ (setq inner-loop-done t)))
(if (<= next-depth 0)
(setq outer-loop-done t))
(if outer-loop-done
(if (re-search-forward comment-start-skip (save-excursion (end-of-line) (point)) t)
(progn (indent-for-comment) (beginning-of-line))))))))))
+(defconst icon-font-lock-keywords-1
+ (eval-when-compile
+ (list
+ ;; Fontify procedure name definitions.
+ '("^[ \t]*\\(procedure\\)\\>[ \t]*\\(\\sw+\\)?"
+ (1 font-lock-builtin-face) (2 font-lock-function-name-face nil t))))
+ "Subdued level highlighting for Icon mode.")
+
+(defconst icon-font-lock-keywords-2
+ (append
+ icon-font-lock-keywords-1
+ (eval-when-compile
+ (list
+ ;; Fontify all type specifiers.
+ (cons
+ (regexp-opt '("null" "string" "co-expression" "table" "integer"
+ "cset" "set" "real" "file" "list") 'words)
+ 'font-lock-type-face)
+ ;; Fontify all keywords.
+ ;;
+ (cons
+ (regexp-opt
+ '("break" "do" "next" "repeat" "to" "by" "else" "if" "not" "return"
+ "until" "case" "of" "while" "create" "every" "suspend" "default"
+ "fail" "record" "then") 'words)
+ 'font-lock-keyword-face)
+ ;; "end" "initial"
+ (cons (regexp-opt '("end" "initial") 'words)
+ 'font-lock-builtin-face)
+ ;; Fontify all system variables.
+ (cons
+ (regexp-opt
+ '("&allocated" "&ascii" "&clock" "&col" "&collections" "&column"
+ "&control" "&cset" "¤t" "&date" "&dateline" "&digits" "&dump"
+ "&e" "&error" "&errornumber" "&errortext" "&errorvalue" "&errout"
+ "&eventcode" "&eventsource" "&eventvalue" "&fail" "&features"
+ "&file" "&host" "&input" "&interval" "&lcase" "&ldrag" "&letters"
+ "&level" "&line" "&lpress" "&lrelease" "&main" "&mdrag" "&meta"
+ "&mpress" "&mrelease" "&null" "&output" "&phi" "&pi" "&pos"
+ "&progname" "&random" "&rdrag" "®ions" "&resize" "&row"
+ "&rpress" "&rrelease" "&shift" "&source" "&storage" "&subject"
+ "&time" "&trace" "&ucase" "&version" "&window" "&x" "&y") t)
+ 'font-lock-constant-face)
+ (cons ;; global local static declarations and link files
+ (concat
+ "^[ \t]*"
+ (regexp-opt '("global" "link" "local" "static") t)
+ "\\(\\sw+\\>\\)*")
+ '((1 font-lock-builtin-face)
+ (font-lock-match-c-style-declaration-item-and-skip-to-next
+ (goto-char (or (match-beginning 2) (match-end 1))) nil
+ (1 (if (match-beginning 2)
+ font-lock-function-name-face
+ font-lock-variable-name-face)))))
+
+ (cons ;; $define $elif $ifdef $ifndef $undef
+ (concat "^"
+ (regexp-opt'("$define" "$elif" "$ifdef" "$ifndef" "$undef") t)
+ "\\>[ \t]*\\([^ \t\n]+\\)?")
+ '((1 font-lock-builtin-face)
+ (4 font-lock-variable-name-face nil t)))
+ (cons ;; $dump $endif $else $include
+ (concat
+ "^" (regexp-opt'("$dump" "$endif" "$else" "$include") t) "\\>" )
+ 'font-lock-builtin-face)
+ (cons ;; $warning $error
+ (concat "^" (regexp-opt '("$warning" "$error") t)
+ "\\>[ \t]*\\(.+\\)?")
+ '((1 font-lock-builtin-face) (3 font-lock-warning-face nil t))))))
+ "Gaudy level highlighting for Icon mode.")
+
+(defvar icon-font-lock-keywords icon-font-lock-keywords-1
+ "Default expressions to highlight in `icon-mode'.")
+
+;;;used by hs-minor-mode
+(defun icon-forward-sexp-function (arg)
+ (if (< arg 0)
+ (beginning-of-icon-defun)
+ (end-of-icon-defun)
+ (forward-char -1)))
+
+(provide 'icon)
+
+;;; arch-tag: 8abf8c99-e7df-44af-a58f-ef5ed2ee52cb
;;; icon.el ends here