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1.1 root 1: ;; Run-time support for mocklisp code.
2: ;; Copyright (C) 1985 Free Software Foundation, Inc.
3:
4: ;; This file is part of GNU Emacs.
5:
6: ;; GNU Emacs is distributed in the hope that it will be useful,
7: ;; but WITHOUT ANY WARRANTY. No author or distributor
8: ;; accepts responsibility to anyone for the consequences of using it
9: ;; or for whether it serves any particular purpose or works at all,
10: ;; unless he says so in writing. Refer to the GNU Emacs General Public
11: ;; License for full details.
12:
13: ;; Everyone is granted permission to copy, modify and redistribute
14: ;; GNU Emacs, but only under the conditions described in the
15: ;; GNU Emacs General Public License. A copy of this license is
16: ;; supposed to have been given to you along with GNU Emacs so you
17: ;; can know your rights and responsibilities. It should be in a
18: ;; file named COPYING. Among other things, the copyright notice
19: ;; and this notice must be preserved on all copies.
20:
21:
22: (provide 'mlsupport)
23:
24: (defmacro ml-defun (&rest defs)
25: (list 'ml-defun-1 (list 'quote defs)))
26:
27: (defun ml-defun-1 (args)
28: (while args
29: (fset (car (car args)) (cons 'mocklisp (cdr (car args))))
30: (setq args (cdr args))))
31:
32: (defmacro declare-buffer-specific (&rest vars)
33: (cons 'progn (mapcar (function (lambda (var) (list 'make-variable-buffer-local (list 'quote var)))) vars)))
34:
35: (defmacro setq-default (var val)
36: (list 'set-default (list 'quote var) val))
37:
38: (defun ml-set-default (varname value)
39: (set-default (intern varname) value))
40:
41: ; Lossage: must make various things default missing args to the prefix arg
42: ; Alternatively, must make provide-prefix-argument do something hairy.
43:
44: (defun >> (val count) (lsh val (- count)))
45: (defun novalue () nil)
46:
47: (defun ml-not (arg) (if (zerop arg) 1 0))
48:
49: (defun provide-prefix-arg (arg form)
50: (funcall (car form) arg))
51:
52: (defun define-keymap (name)
53: (fset (intern name) (make-keymap)))
54:
55: (defun ml-use-local-map (name)
56: (use-local-map (intern (concat name "-map"))))
57:
58: (defun ml-use-global-map (name)
59: (use-global-map (intern (concat name "-map"))))
60:
61: (defun local-bind-to-key (name key)
62: (or (current-local-map)
63: (use-local-map (make-keymap)))
64: (define-key (current-local-map)
65: (if (integerp key)
66: (if (>= key 128)
67: (concat (char-to-string meta-prefix-char)
68: (char-to-string (- key 128)))
69: (char-to-string key))
70: key)
71: (intern name)))
72:
73: (defun bind-to-key (name key)
74: (define-key global-map (if (integerp key) (char-to-string key) key)
75: (intern name)))
76:
77: (defun ml-autoload (name file)
78: (autoload (intern name) file))
79:
80: (defun ml-define-string-macro (name defn)
81: (fset (intern name) defn))
82:
83: (defun push-back-character (char)
84: (setq unread-command-char char))
85:
86: (defun to-col (column)
87: (indent-to column 0))
88:
89: (defmacro is-bound (&rest syms)
90: (cons 'and (mapcar (function (lambda (sym) (list 'boundp (list 'quote sym)))) syms)))
91:
92: (defmacro declare-global (&rest syms)
93: (cons 'progn (mapcar (function (lambda (sym) (list 'defvar sym nil))) syms)))
94:
95: (defmacro error-occurred (&rest body)
96: (list 'condition-case nil (cons 'progn (append body '(nil))) '(error t)))
97:
98: (defun return-prefix-argument (value)
99: (setq prefix-arg value))
100:
101: (defun ml-prefix-argument ()
102: (if (null current-prefix-arg) 1
103: (if (listp current-prefix-arg) (car current-prefix-arg)
104: (if (eq current-prefix-arg '-) -1
105: current-prefix-arg))))
106:
107: (defun ml-print (varname)
108: (interactive "vPrint variable: ")
109: (if (boundp varname)
110: (message "%s => %s" (symbol-name varname) (symbol-value varname))
111: (message "%s has no value" (symbol-name varname))))
112:
113: (defun ml-set (str val) (set (intern str) val))
114:
115: (defun ml-message (&rest args) (message "%s" (apply 'concat args)))
116:
117: (defun kill-to-end-of-line ()
118: (ml-prefix-argument-loop
119: (if (eolp)
120: (kill-region (point) (1+ (point)))
121: (kill-region (point) (if (search-forward ?\n nil t)
122: (1- (point)) (point-max))))))
123:
124: (defun set-auto-fill-hook (arg)
125: (setq auto-fill-hook (intern arg)))
126:
127: (defun auto-execute (function pattern)
128: (if (/= (aref pattern 0) ?*)
129: (error "Only patterns starting with * supported in auto-execute"))
130: (setq auto-mode-alist (cons (cons (concat "\\." (substring pattern 1)
131: "$")
132: function)
133: auto-mode-alist)))
134:
135: (defun move-to-comment-column ()
136: (indent-to comment-column))
137:
138: (defun erase-region ()
139: (delete-region (point) (mark)))
140:
141: (defun delete-region-to-buffer (bufname)
142: (copy-to-buffer bufname (point) (mark))
143: (delete-region (point) (mark)))
144:
145: (defun copy-region-to-buffer (bufname)
146: (copy-to-buffer bufname (point) (mark)))
147:
148: (defun append-region-to-buffer (bufname)
149: (append-to-buffer bufname (point) (mark)))
150:
151: (defun prepend-region-to-buffer (bufname)
152: (prepend-to-buffer bufname (point) (mark)))
153:
154: (defun delete-next-character ()
155: (delete-char (ml-prefix-argument)))
156:
157: (defun delete-next-word ()
158: (delete-region (point) (progn (forward-word (ml-prefix-argument)) (point))))
159:
160: (defun delete-previous-word ()
161: (delete-region (point) (progn (backward-word (ml-prefix-argument)) (point))))
162:
163: (defun delete-previous-character ()
164: (delete-backward-char (ml-prefix-argument)))
165:
166: (defun forward-character ()
167: (forward-char (ml-prefix-argument)))
168:
169: (defun backward-character ()
170: (backward-char (ml-prefix-argument)))
171:
172: (defun ml-newline ()
173: (newline (ml-prefix-argument)))
174:
175: (defun ml-next-line ()
176: (next-line (ml-prefix-argument)))
177:
178: (defun ml-previous-line ()
179: (previous-line (ml-prefix-argument)))
180:
181: (defun delete-to-kill-buffer ()
182: (kill-region (point) (mark)))
183:
184: (defun narrow-region ()
185: (narrow-to-region (point) (mark)))
186:
187: (defun ml-newline-and-indent ()
188: (let ((column (current-indentation)))
189: (newline (ml-prefix-argument))
190: (indent-to column)))
191:
192: (defun newline-and-backup ()
193: (open-line (ml-prefix-argument)))
194:
195: (defun quote-char ()
196: (quoted-insert (ml-prefix-argument)))
197:
198: (defun ml-current-column ()
199: (1+ (current-column)))
200:
201: (defun ml-current-indent ()
202: (1+ (current-indentation)))
203:
204: (defun region-around-match (&optional n)
205: (set-mark (match-beginning n))
206: (goto-char (match-end n)))
207:
208: (defun region-to-string ()
209: (buffer-substring (min (point) (mark)) (max (point) (mark))))
210:
211: (defun use-abbrev-table (name)
212: (let ((symbol (intern (concat name "-abbrev-table"))))
213: (or (boundp symbol)
214: (define-abbrev-table symbol nil))
215: (symbol-value symbol)))
216:
217: (defun define-hooked-local-abbrev (name exp hook)
218: (define-local-abbrev name exp (intern hook)))
219:
220: (defun define-hooked-global-abbrev (name exp hook)
221: (define-global-abbrev name exp (intern hook)))
222:
223: (defun case-word-lower ()
224: (ml-casify-word 'downcase-region))
225:
226: (defun case-word-upper ()
227: (ml-casify-word 'upcase-region))
228:
229: (defun case-word-capitalize ()
230: (ml-casify-word 'capitalize-region))
231:
232: (defun ml-casify-word (fun)
233: (save-excursion
234: (forward-char 1)
235: (forward-word -1)
236: (funcall fun (point)
237: (progn (forward-word (ml-prefix-argument))
238: (point)))))
239:
240: (defun case-region-lower ()
241: (downcase-region (point) (mark)))
242:
243: (defun case-region-upper ()
244: (upcase-region (point) (mark)))
245:
246: (defun case-region-capitalize ()
247: (capitalize-region (point) (mark)))
248:
249: (defvar saved-command-line-args nil)
250:
251: (defun argc ()
252: (or saved-command-line-args
253: (setq saved-command-line-args command-line-args
254: command-line-args ()))
255: (length command-line-args))
256:
257: (defun argv (i)
258: (or saved-command-line-args
259: (setq saved-command-line-args command-line-args
260: command-line-args ()))
261: (nth i saved-command-line-args))
262:
263: (defun invisible-argc ()
264: (length (or saved-command-line-args
265: command-line-args)))
266:
267: (defun invisible-argv (i)
268: (nth i (or saved-command-line-args
269: command-line-args)))
270:
271: (defun exit-emacs ()
272: (interactive)
273: (condition-case ()
274: (exit-recursive-edit)
275: (error (kill-emacs))))
276:
277: ;; Lisp function buffer-size returns total including invisible;
278: ;; mocklisp wants just visible.
279: (defun ml-buffer-size ()
280: (- (point-max) (point-min)))
281:
282: (defun previous-command ()
283: last-command)
284:
285: (defun beginning-of-window ()
286: (goto-char (window-start)))
287:
288: (defun end-of-window ()
289: (goto-char (window-start))
290: (vertical-motion (- (window-height) 2)))
291:
292: (defun ml-search-forward (string)
293: (search-forward string nil nil (ml-prefix-argument)))
294:
295: (defun ml-re-search-forward (string)
296: (re-search-forward string nil nil (ml-prefix-argument)))
297:
298: (defun ml-search-backward (string)
299: (search-backward string nil nil (ml-prefix-argument)))
300:
301: (defun ml-re-search-backward (string)
302: (re-search-backward string nil nil (ml-prefix-argument)))
303:
304: (defvar use-users-shell 1
305: "Mocklisp compatibility variable; 1 means use shell from SHELL env var.
306: 0 means use /bin/sh.")
307:
308: (defvar use-csh-option-f 1
309: "Mocklisp compatibility variable; 1 means pass -f when calling csh.")
310:
311: (defun filter-region (command)
312: (let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
313: (csh (equal (file-name-nondirectory shell) "csh")))
314: (call-process-region (point) (mark) shell t t nil
315: (if (and csh use-csh-option-f) "-cf" "-c")
316: (concat "exec " command))))
317:
318: (defun execute-monitor-command (command)
319: (let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
320: (csh (equal (file-name-nondirectory shell) "csh")))
321: (call-process shell nil t t
322: (if (and csh use-csh-option-f) "-cf" "-c")
323: (concat "exec " command))))
324:
325: (defun use-syntax-table (name)
326: (set-syntax-table (symbol-value (intern (concat name "-syntax-table")))))
327:
328: (defun line-to-top-of-window ()
329: (recenter (1- (ml-prefix-argument))))
330:
331: (defun ml-previous-page (&optional arg)
332: (let ((count (or arg (ml-prefix-argument))))
333: (while (> count 0)
334: (scroll-down nil)
335: (setq count (1- count)))
336: (while (< count 0)
337: (scroll-up nil)
338: (setq count (1+ count)))))
339:
340: (defun ml-next-page ()
341: (previous-page (- (ml-prefix-argument))))
342:
343: (defun page-next-window (&optional arg)
344: (let ((count (or arg (ml-prefix-argument))))
345: (while (> count 0)
346: (scroll-other-window nil)
347: (setq count (1- count)))
348: (while (< count 0)
349: (scroll-other-window '-)
350: (setq count (1+ count)))))
351:
352: (defun ml-next-window ()
353: (select-window (next-window)))
354:
355: (defun ml-previous-window ()
356: (select-window (previous-window)))
357:
358: (defun scroll-one-line-up ()
359: (scroll-up (ml-prefix-argument)))
360:
361: (defun scroll-one-line-down ()
362: (scroll-down (ml-prefix-argument)))
363:
364: (defun split-current-window ()
365: (split-window (selected-window)))
366:
367: (defun last-key-struck () last-command-char)
368:
369: (defun execute-mlisp-line (string)
370: (eval (read string)))
371:
372: (defun move-dot-to-x-y (x y)
373: (goto-char (window-start (selected-window)))
374: (vertical-motion (1- y))
375: (move-to-column (1- x)))
376:
377: (defun ml-modify-syntax-entry (string)
378: (let ((i 5)
379: (len (length string))
380: (datastring (substring string 0 2)))
381: (if (= (aref string 0) ?\-)
382: (aset datastring 0 ?\ ))
383: (if (= (aref string 2) ?\{)
384: (if (= (aref string 4) ?\ )
385: (aset datastring 0 ?\<)
386: (error "Two-char comment delimiter: use modify-syntax-entry directly")))
387: (if (= (aref string 3) ?\})
388: (if (= (aref string 4) ?\ )
389: (aset datastring 0 ?\>)
390: (error "Two-char comment delimiter: use modify-syntax-entry directly")))
391: (while (< i len)
392: (modify-syntax-entry (aref string i) datastring)
393: (setq i (1+ i))
394: (if (and (< i len)
395: (= (aref string i) ?\-))
396: (let ((c (aref string (1- i)))
397: (lim (aref string (1+ i))))
398: (while (<= c lim)
399: (modify-syntax-entry c datastring)
400: (setq c (1+ c)))
401: (setq i (+ 2 i)))))))
402:
403:
404:
405: (defun ml-substr (string from to)
406: (let ((length (length string)))
407: (if (< from 0) (setq from (+ from length)))
408: (if (< to 0) (setq to (+ to length)))
409: (substring string from (+ from to))))
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