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;;; guile-c.el --- Guile C editing commands
;; Copyright (C) 2001 Free Software Foundation, Inc.
;; This program 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.
;; This program 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 this program; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; (add-hook 'c-mode-hook
;; (lambda ()
;; (require 'guile-c)
;; (define-key c-mode-map "\C-c\C-g\C-p" 'guile-c-insert-define)
;; (define-key c-mode-map "\C-c\C-g\C-e" 'guile-c-edit-docstring)
;; (define-key c-mode-map "\C-c\C-g\C-d" 'guile-c-deprecate-region)
;; ))
;;; Code:
(require 'cc-mode)
(defvar guile-c-prefix "scm_")
;;;
;;; Insert templates
;;;
(defun guile-c-insert-define ()
"Insert a template of a Scheme procedure.
M-x guile-c-insert-define RET foo arg , opt . rest =>
SCM_DEFINE (scm_foo, \"foo\", 1, 1, 1,
(SCM arg, SCM opt, SCM rest),
\"\")
#define FUNC_NAME s_scm_foo
{
}
#undef FUNC_NAME"
(interactive)
(let ((tokens (split-string (read-string "Procedure: ")))
name args opts rest)
;; Get procedure name
(if (not tokens) (error "No procedure name"))
(setq name (car tokens) tokens (cdr tokens))
;; Get requisite arguments
(while (and tokens (not (member (car tokens) '("," "."))))
(setq args (cons (car tokens) args) tokens (cdr tokens)))
(setq args (nreverse args))
;; Get optional arguments
(when (string= (car tokens) ",")
(setq tokens (cdr tokens))
(while (and tokens (not (string= (car tokens) ".")))
(setq opts (cons (car tokens) opts) tokens (cdr tokens)))
(setq opts (nreverse opts)))
;; Get rest argument
(when (string= (car tokens) ".")
(setq rest (list (cadr tokens))))
;; Insert template
(let ((c-name (guile-c-name-from-scheme-name name)))
(insert (format "SCM_DEFINE (%s, \"%s\", %d, %d, %d,\n"
c-name name (length args) (length opts) (length rest))
"\t ("
(mapconcat (lambda (a) (concat "SCM " a))
(append args opts rest) ", ")
"),\n"
"\t \"\")\n"
"#define FUNC_NAME s_" c-name "\n"
"{\n\n}\n"
"#undef FUNC_NAME\n\n")
(previous-line 4)
(indent-for-tab-command))))
(defun guile-c-name-from-scheme-name (name)
(while (string-match "\\?$" name) (setq name (replace-match "_p" t t name)))
(while (string-match "!$" name) (setq name (replace-match "_x" t t name)))
(while (string-match "^%" name) (setq name (replace-match "sys_" t t name)))
(while (string-match "->" name) (setq name (replace-match "_to_" t t name)))
(while (string-match "[-:]" name) (setq name (replace-match "_" t t name)))
(concat guile-c-prefix name))
;;;
;;; Edit docstrings
;;;
(defvar guile-c-window-configuration nil)
(defun guile-c-edit-docstring ()
(interactive)
(let* ((region (guile-c-find-docstring))
(doc (if region (buffer-substring (car region) (cdr region)))))
(if (not doc)
(error "No docstring!")
(setq guile-c-window-configuration (current-window-configuration))
(with-current-buffer (get-buffer-create "*Guile Docstring*")
(erase-buffer)
(insert doc)
(goto-char (point-min))
(while (not (eobp))
(if (looking-at "[ \t]*\"")
(delete-region (match-beginning 0) (match-end 0)))
(end-of-line)
(if (eq (char-before (point)) ?\")
(delete-backward-char 1))
(if (and (eq (char-before (point)) ?n)
(eq (char-before (1- (point))) ?\\))
(delete-backward-char 2))
(forward-line))
(goto-char (point-min))
(texinfo-mode)
(if global-font-lock-mode
(font-lock-fontify-buffer))
(local-set-key "\C-c\C-c" 'guile-c-edit-finish)
(setq fill-column 63)
(switch-to-buffer-other-window (current-buffer))
(message "Type `C-c C-c' to finish")))))
(defun guile-c-edit-finish ()
(interactive)
(goto-char (point-max))
(while (eq (char-before) ?\n) (backward-delete-char 1))
(goto-char (point-min))
(if (eobp)
(insert "\"\"")
(while (not (eobp))
(insert "\t \"")
(end-of-line)
(insert (if (eobp) "\"" "\\n\""))
(forward-line 1)))
(let ((doc (buffer-string)))
(kill-buffer (current-buffer))
(set-window-configuration guile-c-window-configuration)
(let ((region (guile-c-find-docstring)))
(goto-char (car region))
(delete-region (car region) (cdr region)))
(insert doc)))
(defun guile-c-find-docstring ()
(save-excursion
(if (re-search-backward "^SCM_DEFINE" nil t)
(let ((start (progn (forward-line 2) (point))))
(while (looking-at "[ \t]*\"")
(forward-line 1))
(cons start (- (point) 2))))))
;;;
;;; Others
;;;
(defun guile-c-deprecate-region (start end)
(interactive "r")
(save-excursion
(let ((marker (make-marker)))
(set-marker marker end)
(goto-char start)
(insert "#if (SCM_DEBUG_DEPRECATED == 0)\n\n")
(goto-char marker)
(insert "\n#endif /* (SCM_DEBUG_DEPRECATED == 0) */\n"))))
(provide 'guile-c)
;; guile-c.el ends here
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