Slang-mode
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;;; slang-mode.el --- a major-mode for editing slang scripts
;; Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
;; Modified By: Joe Robertson <jmrobert@sbcs.com>
;; Modified From: tcl-mode.el
;;
;; Original Author: Gregor Schmid <schmid@fb3-s7.math.tu-berlin.de>
;; Keywords: languages, processes, tools
;; 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)
;; any later version.
;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Add these lines to your .emacs file to enable slang mode
;; slang mode
;; (autoload 'slang-mode "slang-mode"
;; "Mode for editing slang source files")
;; (setq auto-mode-alist
;; (append '(("\\.sl$" . slang-mode)) auto-mode-alist))
;; Special Thanks to Simon Marshall <simonm@mail.esrin.esa.it> for
;; font-lock patches.
;; This file was written with emacs using Jamie Lokier's folding mode
;; That's what the funny ;;{{{ marks are there for
;;{{{ Usage
;; Slang-mode supports c-mode style formatting and sending of
;; lines/regions/files to a slang interpreter. An interpreter (see
;; variable `slang-default-application') will be started if you try to
;; send some code and none is running. You can use the process-buffer
;; (named after the application you chose) as if it were an
;; interactive shell. See the documentation for `comint.el' for
;; details.
;;}}}
;;{{{ Key-bindings
;; To see all the keybindings for folding mode, look at `slang-setup-keymap'
;; or start `slang-mode' and type `\C-h m'.
;; The keybindings may seem strange, since I prefer to use them with
;; slang-prefix-key set to nil, but since those keybindings are already used
;; the default for `slang-prefix-key' is `\C-c', which is the conventional
;; prefix for major-mode commands.
;; You can customise the keybindings either by setting `slang-prefix-key'
;; or by putting the following in your .emacs
;; (setq slang-mode-map (make-sparse-keymap))
;; and
;; (define-key slang-mode-map <your-key> <function>)
;; for all the functions you need.
;;}}}
;;{{{ Variables
;; You may want to customize the following variables:
;; slang-indent-level
;; slang-always-show
;; slang-mode-map
;; slang-prefix-key
;; slang-mode-hook
;; slang-default-application
;; slang-default-command-switches
;;}}}
;;; Code:
;; We need that !
(require 'comint)
;;{{{ variables
(defgroup slang nil
"Major mode for editing slang code."
:prefix "slang-"
:group 'languages)
(defcustom slang-default-application "c:/bin/slsh.exe"
"Default slang application to run in slang subprocess."
:type 'string
:group 'slang)
(defcustom slang-default-command-switches nil
"Command switches for `slang-default-application'.
Should be a list of strings."
:type '(repeat string)
:group 'slang)
(defvar slang-process nil
"The active slang subprocess corresponding to current buffer.")
(defvar slang-process-buffer nil
"Buffer used for communication with slang subprocess for current buffer.")
(defcustom slang-always-show t
"*Non-nil means display slang-process-buffer after sending a command."
:type 'boolean
:group 'slang)
(defvar slang-mode-map nil
"Keymap used with slang mode.")
(defvar slang-prefix-key "\C-c"
"Prefix for all slang-mode commands.")
(defcustom slang-mode-hook nil
"Hooks called when slang mode fires up."
:type 'hook
:group 'slang)
(defvar slang-region-start (make-marker)
"Start of special region for slang communication.")
(defvar slang-region-end (make-marker)
"End of special region for slang communication.")
(defcustom slang-indent-level 4
"Amount by which slang subexpressions are indented."
:type 'integer
:group 'slang)
(defcustom slang-default-eval "eval"
"Default command used when sending regions."
:type 'string
:group 'slang)
(defvar slang-mode-menu (make-sparse-keymap "Slang-Mode")
"Keymap for slang-mode's menu.")
(defvar slang-font-lock-keywords
(eval-when-compile
(list
;;
;; Function name declarations.
'("\\<\\(islang_class\\|class\\|method\\|proc\\|body\\)\\>[ \t]*\\(\\sw+\\)?"
(1 font-lock-keyword-face) (2 font-lock-function-name-face nil t))
;;
;; Keywords.
;(make-regexp '("if" "then" "else" "elseif" "for" "foreach" "break"
; "continue" "while" "eval" "case" "in" "switch" "default"
; "exit" "error" "proc" "return" "uplevel" "constructor"
; "destructor" "islang_class" "loop" "for_array_keys"
; "for_recursive_glob" "for_file"))
(concat "\\<\\("
"break\\|case\\|else\\|if\\|!if\\|for"
"\\|each\\|else\\|else if\\|loop"
"\\|namespace\\|eval\\|export"
"\\|orelse\\|andelse\\|message\\|(s|f|)print."
"\\|return\\|switch\\|while"
"\\|not\\|do\\|forever\\|foreach\\|using"
"\\|return\\|continue\\|error"
"\\|static\\|variable\\|implements\\|reshape"
"\\|struct\\|(EXECUTE_|)ERROR_BLOCK"
"\\|define"
"\\)\\>")
;;
;; Types.
; (make-regexp '("global" "upvar" "variable" "inherit" "public"
; "private" "protected" "common"))
(cons (concat "\\<\\("
"common\\|global\\|inherit\\|p\\(r\\(ivate\\|otected\\)\\|ublic\\)"
"\\|upvar\\|variable\\|.*_Type"
"\\)\\>")
'font-lock-type-face)
))
"Default expressions to highlight in SLANG modes.")
(defvar slang-imenu-generic-expression
'(
(nil "^\\s-*\\(proc\\|body\\)\\s-+\\(\\(\\s_\\|\\sw\\)+\\)" 2)
("Classes" "^\\s-*class\\s-+\\(\\(\\s_\\|\\sw\\)+\\)" 1))
"Imenu generic expression for slang-mode. See `imenu-generic-expression'.")
;;}}}
;;{{{ slang-mode
;;;###autoload
(defun slang-mode ()
"Major mode for editing slang scripts.
The following keys are bound:
\\{slang-mode-map}
"
(interactive)
(let ((switches nil)
s)
(kill-all-local-variables)
(setq major-mode 'slang-mode)
(setq mode-name "SLANG")
(set (make-local-variable 'slang-process) nil)
(set (make-local-variable 'slang-process-buffer) nil)
(make-local-variable 'slang-default-command-switches)
(set (make-local-variable 'indent-line-function) 'slang-indent-line)
(set (make-local-variable 'comment-start) "% ")
(set (make-local-variable 'comment-start-skip) "% *")
(set (make-local-variable 'font-lock-defaults)
'(slang-font-lock-keywords nil nil ((?_ . "w") (?: . "w"))))
(set (make-local-variable 'imenu-generic-expression)
slang-imenu-generic-expression)
(setq imenu-case-fold-search nil)
(setq imenu-syntax-alist '((?: . "w")))
(make-local-variable 'slang-default-eval)
(or slang-mode-map
(slang-setup-keymap))
(use-local-map slang-mode-map)
(set-syntax-table (copy-syntax-table))
;;real comment keys is right here
(modify-syntax-entry ?# "<")
(modify-syntax-entry ?% "<")
(modify-syntax-entry ?\n ">")
;; look for a #!.../wish -f line at bob
(save-excursion
(goto-char (point-min))
(if (looking-at "#![ \t]*\\([^ \t]*\\)[ \t]\\(.*[ \t]\\)-f")
(progn
(set (make-local-variable 'slang-default-application)
(buffer-substring (match-beginning 1)
(match-end 1)))
(if (match-beginning 2)
(progn
(goto-char (match-beginning 2))
(set (make-local-variable 'slang-default-command-switches) nil)
(while (< (point) (match-end 2))
(setq s (read (current-buffer)))
(if (<= (point) (match-end 2))
(setq slang-default-command-switches
(append slang-default-command-switches
(list (prin1-to-string s)))))))))
;; if this fails, look for the #!/bin/csh ... exec hack
(while (eq (following-char) ?#)
(forward-line 1))
(or (bobp)
(forward-char -1))
(if (eq (preceding-char) ?\\)
(progn
(forward-char 1)
(if (looking-at "exec[ \t]+\\([^ \t]*\\)[ \t]\\(.*[ \t]\\)*-f")
(progn
(set (make-local-variable 'slang-default-application)
(buffer-substring (match-beginning 1)
(match-end 1)))
(if (match-beginning 2)
(progn
(goto-char (match-beginning 2))
(set (make-local-variable
'slang-default-command-switches)
nil)
(while (< (point) (match-end 2))
(setq s (read (current-buffer)))
(if (<= (point) (match-end 2))
(setq slang-default-command-switches
(append slang-default-command-switches
(list (prin1-to-string s)))))))))
)))))
(run-hooks 'slang-mode-hook)))
;;}}}
;;{{{ slang-setup-keymap
(defun slang-setup-keymap ()
"Set up keymap for slang mode.
If the variable `slang-prefix-key' is nil, the bindings go directly
to `slang-mode-map', otherwise they are prefixed with `slang-prefix-key'."
(setq slang-mode-map (make-sparse-keymap))
(define-key slang-mode-map [menu-bar slang-mode]
(cons "Slang-Mode" slang-mode-menu))
(let ((map (if slang-prefix-key
(make-sparse-keymap)
slang-mode-map)))
;; indentation
(define-key slang-mode-map [?}] 'slang-electric-brace)
;; communication
(define-key map "\M-e" 'slang-send-current-line)
(define-key map "\M-r" 'slang-send-region)
(define-key map "\M-w" 'slang-send-proc)
(define-key map "\M-a" 'slang-send-buffer)
(define-key map "\M-q" 'slang-kill-process)
(define-key map "\M-u" 'slang-restart-with-whole-file)
(define-key map "\M-s" 'slang-show-process-buffer)
(define-key map "\M-h" 'slang-hide-process-buffer)
(define-key map "\M-i" 'slang-get-error-info)
(define-key map "\M-[" 'slang-beginning-of-proc)
(define-key map "\M-]" 'slang-end-of-proc)
(define-key map "\C-\M-s" 'slang-set-slang-region-start)
(define-key map "\C-\M-e" 'slang-set-slang-region-end)
(define-key map "\C-\M-r" 'slang-send-slang-region)
(if slang-prefix-key
(define-key slang-mode-map slang-prefix-key map))
))
;;}}}
;;{{{ indentation
;;{{{ slang-indent-line
(defun slang-indent-line ()
"Indent current line as slang code.
Return the amount the indentation changed by."
(let ((indent (slang-calculate-indentation nil))
beg shift-amt
(case-fold-search nil)
(pos (- (point-max) (point))))
(beginning-of-line)
(setq beg (point))
(skip-chars-forward " \t")
(save-excursion
(while (eq (following-char) ?})
(setq indent (max (- indent slang-indent-level) 0))
(forward-char 1)
(if (looking-at "\\([ \t]*\\)}")
(progn
(delete-region (match-beginning 1) (match-end 1))
(insert-char ? (1- slang-indent-level))))))
(setq shift-amt (- indent (current-column)))
(if (zerop shift-amt)
(if (> (- (point-max) pos) (point))
(goto-char (- (point-max) pos)))
(delete-region beg (point))
(indent-to indent)
;; If initial point was within line's indentation,
;; position after the indentation. Else stay at same point in text.
(if (> (- (point-max) pos) (point))
(goto-char (- (point-max) pos))))
shift-amt))
;;}}}
;;{{{ slang-calculate-indentation
(defun slang-calculate-indentation (&optional parse-start)
"Return appropriate indentation for current line as slang code.
In usual case returns an integer: the column to indent to."
(let ((pos (point)))
(save-excursion
(if parse-start
(setq pos (goto-char parse-start)))
(beginning-of-line)
(if (bobp)
(current-indentation)
(forward-char -1)
(if (eq (preceding-char) ?\\)
(+ (current-indentation)
(progn
(beginning-of-line)
(if (bobp)
(* 2 slang-indent-level)
(forward-char -1)
(if (not (eq (preceding-char) ?\\))
(* 2 slang-indent-level)
0))))
(forward-char 1)
(if (re-search-backward
"\\(^[^ \t\n\r%]\\)\\|\\({\\s *[%\n]\\)\\|\\(}\\s *\n\\)"
nil t)
(+ (- (current-indentation)
(if (save-excursion
(beginning-of-line)
(and (not (bobp))
(progn
(forward-char -1)
(eq (preceding-char) ?\\))))
(* 2 slang-indent-level)
0))
(if (eq (following-char) ?{)
slang-indent-level
0))
(goto-char pos)
(beginning-of-line)
(forward-line -1)
(current-indentation)))))))
;;}}}
;;{{{ slang-electric-brace
(defun slang-electric-brace (arg)
"Insert `}' and indent line for slang."
(interactive "P")
(insert-char ?} (prefix-numeric-value arg))
(slang-indent-line)
(blink-matching-open))
;;}}}
;;}}}
;;{{{ searching
;;{{{ slang-beginning-of-proc
(defun slang-beginning-of-proc (&optional arg)
"Move backward to the beginning of a slang proc (or similar).
With argument, do it that many times. Negative arg -N
means move forward to Nth following beginning of proc.
Returns t unless search stops due to beginning or end of buffer."
(interactive "P")
(or arg
(setq arg 1))
(let ((found nil)
(ret t))
(if (and (< arg 0)
(looking-at "^[^ \t\n%][^\n]*{[ \t]*$"))
(forward-char 1))
(while (< arg 0)
(if (re-search-forward "^[^ \t\n%][^\n]*{[ \t]*$" nil t)
(setq arg (1+ arg)
found t)
(setq ret nil
arg 0)))
(if found
(beginning-of-line))
(while (> arg 0)
(if (re-search-backward "^[^ \t\n%][^\n]*{[ \t]*$" nil t)
(setq arg (1- arg))
(setq ret nil
arg 0)))
ret))
;;}}}
;;{{{ slang-end-of-proc
(defun slang-end-of-proc (&optional arg)
"Move forward to next end of slang proc (or similar).
With argument, do it that many times. Negative argument -N means move
back to Nth preceding end of proc.
This function just searches for a `}' at the beginning of a line."
(interactive "P")
(or arg
(setq arg 1))
(let ((found nil)
(ret t))
(if (and (< arg 0)
(not (bolp))
(save-excursion
(beginning-of-line)
(eq (following-char) ?})))
(forward-char -1))
(while (> arg 0)
(if (re-search-forward "^}" nil t)
(setq arg (1- arg)
found t)
(setq ret nil
arg 0)))
(while (< arg 0)
(if (re-search-backward "^}" nil t)
(setq arg (1+ arg)
found t)
(setq ret nil
arg 0)))
(if found
(end-of-line))
ret))
;;}}}
;;}}}
;;{{{ communication with a inferior process via comint
;;{{{ slang-start-process
(defun slang-start-process (name program &optional startfile &rest switches)
"Start a slang process named NAME, running PROGRAM."
(or switches
(setq switches slang-default-command-switches))
(setq slang-process-buffer (apply 'make-comint name program startfile switches))
(setq slang-process (get-buffer-process slang-process-buffer))
(save-excursion
(set-buffer slang-process-buffer)
(setq comint-prompt-regexp "^[^% ]*\\(\\)* *")
)
)
;;}}}
;;{{{ slang-kill-process
(defun slang-kill-process ()
"Kill slang subprocess and its buffer."
(interactive)
(if slang-process-buffer
(kill-buffer slang-process-buffer)))
;;}}}
;;{{{ slang-set-slang-region-start
(defun slang-set-slang-region-start (&optional arg)
"Set start of region for use with `slang-send-slang-region'."
(interactive)
(set-marker slang-region-start (or arg (point))))
;;}}}
;;{{{ slang-set-slang-region-end
(defun slang-set-slang-region-end (&optional arg)
"Set end of region for use with `slang-send-slang-region'."
(interactive)
(set-marker slang-region-end (or arg (point))))
;;}}}
;;{{{ send line/region/buffer to slang-process
;;{{{ slang-send-current-line
(defun slang-send-current-line ()
"Send current line to slang subprocess, found in `slang-process'.
If `slang-process' is nil or dead, start a new process first."
(interactive)
(let ((start (save-excursion (beginning-of-line) (point)))
(end (save-excursion (end-of-line) (point))))
(or (and slang-process
(eq (process-status slang-process) 'run))
(slang-start-process slang-default-application slang-default-application))
(comint-simple-send slang-process (buffer-substring start end))
(forward-line 1)
(if slang-always-show
(display-buffer slang-process-buffer))))
;;}}}
;;{{{ slang-send-region
(defun slang-send-region (start end)
"Send region to slang subprocess, wrapped in `eval { ... }'."
(interactive "r")
(or (and slang-process
(comint-check-proc slang-process-buffer))
(slang-start-process slang-default-application slang-default-application))
(comint-simple-send slang-process
(concat slang-default-eval
" {\n"(buffer-substring start end) "\n}"))
(if slang-always-show
(display-buffer slang-process-buffer)))
;;}}}
;;{{{ slang-send-slang-region
(defun slang-send-slang-region ()
"Send preset slang region to slang subprocess, wrapped in `eval { ... }'."
(interactive)
(or (and slang-region-start slang-region-end)
(error "slang-region not set"))
(or (and slang-process
(comint-check-proc slang-process-buffer))
(slang-start-process slang-default-application slang-default-application))
(comint-simple-send slang-process
(concat slang-default-eval
" {\n"
(buffer-substring slang-region-start slang-region-end)
"\n}"))
(if slang-always-show
(display-buffer slang-process-buffer)))
;;}}}
;;{{{ slang-send-proc
(defun slang-send-proc ()
"Send proc around point to slang subprocess, wrapped in `eval { ... }'."
(interactive)
(let (beg end)
(save-excursion
(slang-beginning-of-proc)
(setq beg (point))
(slang-end-of-proc)
(setq end (point)))
(or (and slang-process
(comint-check-proc slang-process-buffer))
(slang-start-process slang-default-application slang-default-application))
(comint-simple-send slang-process
(concat slang-default-eval
" {\n"
(buffer-substring beg end)
"\n}"))
(if slang-always-show
(display-buffer slang-process-buffer))))
;;}}}
;;{{{ slang-send-buffer
(defun slang-send-buffer ()
"Send whole buffer to slang subprocess, wrapped in `eval { ... }'."
(interactive)
(or (and slang-process
(comint-check-proc slang-process-buffer))
(slang-start-process slang-default-application slang-default-application))
(if (buffer-modified-p)
(comint-simple-send slang-process
(concat
slang-default-eval
" {\n"
(buffer-substring (point-min) (point-max))
"\n}"))
(comint-simple-send slang-process
(concat "source "
(buffer-file-name)
"\n")))
(if slang-always-show
(display-buffer slang-process-buffer)))
;;}}}
;;}}}
;;{{{ slang-get-error-info
(defun slang-get-error-info ()
"Send string `set errorInfo' to slang subprocess and display the slang buffer."
(interactive)
(or (and slang-process
(comint-check-proc slang-process-buffer))
(slang-start-process slang-default-application slang-default-application))
(comint-simple-send slang-process "set errorInfo\n")
(display-buffer slang-process-buffer))
;;}}}
;;{{{ slang-restart-with-whole-file
(defun slang-restart-with-whole-file ()
"Restart slang subprocess and send whole file as input."
(interactive)
(slang-kill-process)
(slang-start-process slang-default-application slang-default-application)
(slang-send-buffer))
;;}}}
;;{{{ slang-show-process-buffer
(defun slang-show-process-buffer ()
"Make sure `slang-process-buffer' is being displayed."
(interactive)
(display-buffer slang-process-buffer))
;;}}}
;;{{{ slang-hide-process-buffer
(defun slang-hide-process-buffer ()
"Delete all windows that display `slang-process-buffer'."
(interactive)
(delete-windows-on slang-process-buffer))
;;}}}
;;}}}
;;{{{ menu bar
(define-key slang-mode-menu [restart-with-whole-file]
'("Restart With Whole File" . slang-restart-with-whole-file))
(define-key slang-mode-menu [kill-process]
'("Kill Process" . slang-kill-process))
(define-key slang-mode-menu [hide-process-buffer]
'("Hide Process Buffer" . slang-hide-process-buffer))
(define-key slang-mode-menu [get-error-info]
'("Get Error Info" . slang-get-error-info))
(define-key slang-mode-menu [show-process-buffer]
'("Show Process Buffer" . slang-show-process-buffer))
(define-key slang-mode-menu [end-of-proc]
'("End Of Proc" . slang-end-of-proc))
(define-key slang-mode-menu [beginning-of-proc]
'("Beginning Of Proc" . slang-beginning-of-proc))
(define-key slang-mode-menu [send-slang-region]
'("Send Slang-Region" . slang-send-slang-region))
(define-key slang-mode-menu [set-slang-regio-end]
'("Set Slang-Region End" . slang-set-slang-region-end))
(define-key slang-mode-menu [set-slang-region-start]
'("Set Slang-Region Start" . slang-set-slang-region-start))
(define-key slang-mode-menu [send-current-line]
'("Send Current Line" . slang-send-current-line))
(define-key slang-mode-menu [send-region]
'("Send Region" . slang-send-region))
(define-key slang-mode-menu [send-proc]
'("Send Proc" . slang-send-proc))
(define-key slang-mode-menu [send-buffer]
'("Send Buffer" . slang-send-buffer))
;;}}}
(provide 'slang-mode)
;;{{{ Emacs local variables
;; Local Variables:
;; folded-file: t
;; End:
;;}}}
;;; slang-mode.el ends here