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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 free software; you can redistribute it and/or modify
7: ;; it under the terms of the GNU General Public License as published by
8: ;; the Free Software Foundation; either version 1, or (at your option)
9: ;; any later version.
10:
11: ;; GNU Emacs is distributed in the hope that it will be useful,
12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: ;; GNU General Public License for more details.
15:
16: ;; You should have received a copy of the GNU General Public License
17: ;; along with GNU Emacs; see the file COPYING. If not, write to
18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19:
20:
21: (provide 'mlsupport)
22:
23: (defmacro ml-defun (&rest defs)
24: (list 'ml-defun-1 (list 'quote defs)))
25:
26: (defun ml-defun-1 (args)
27: (while args
28: (fset (car (car args)) (cons 'mocklisp (cdr (car args))))
29: (setq args (cdr args))))
30:
31: (defmacro declare-buffer-specific (&rest vars)
32: (cons 'progn (mapcar (function (lambda (var) (list 'make-variable-buffer-local (list 'quote var)))) vars)))
33:
34: (defmacro setq-default (var val)
35: (list 'set-default (list 'quote var) val))
36:
37: (defun ml-set-default (varname value)
38: (set-default (intern varname) value))
39:
40: ; Lossage: must make various things default missing args to the prefix arg
41: ; Alternatively, must make provide-prefix-argument do something hairy.
42:
43: (defun >> (val count) (lsh val (- count)))
44: (defun novalue () nil)
45:
46: (defun ml-not (arg) (if (zerop arg) 1 0))
47:
48: (defun provide-prefix-arg (arg form)
49: (funcall (car form) arg))
50:
51: (defun define-keymap (name)
52: (fset (intern name) (make-keymap)))
53:
54: (defun ml-use-local-map (name)
55: (use-local-map (intern (concat name "-map"))))
56:
57: (defun ml-use-global-map (name)
58: (use-global-map (intern (concat name "-map"))))
59:
60: (defun local-bind-to-key (name key)
61: (or (current-local-map)
62: (use-local-map (make-keymap)))
63: (define-key (current-local-map)
64: (if (integerp key)
65: (if (>= key 128)
66: (concat (char-to-string meta-prefix-char)
67: (char-to-string (- key 128)))
68: (char-to-string key))
69: key)
70: (intern name)))
71:
72: (defun bind-to-key (name key)
73: (define-key global-map (if (integerp key) (char-to-string key) key)
74: (intern name)))
75:
76: (defun ml-autoload (name file)
77: (autoload (intern name) file))
78:
79: (defun ml-define-string-macro (name defn)
80: (fset (intern name) defn))
81:
82: (defun push-back-character (char)
83: (setq unread-command-char char))
84:
85: (defun to-col (column)
86: (indent-to column 0))
87:
88: (defmacro is-bound (&rest syms)
89: (cons 'and (mapcar (function (lambda (sym) (list 'boundp (list 'quote sym)))) syms)))
90:
91: (defmacro declare-global (&rest syms)
92: (cons 'progn (mapcar (function (lambda (sym) (list 'defvar sym nil))) syms)))
93:
94: (defmacro error-occurred (&rest body)
95: (list 'condition-case nil (cons 'progn (append body '(nil))) '(error t)))
96:
97: (defun return-prefix-argument (value)
98: (setq prefix-arg value))
99:
100: (defun ml-prefix-argument ()
101: (if (null current-prefix-arg) 1
102: (if (listp current-prefix-arg) (car current-prefix-arg)
103: (if (eq current-prefix-arg '-) -1
104: current-prefix-arg))))
105:
106: (defun ml-print (varname)
107: (interactive "vPrint variable: ")
108: (if (boundp varname)
109: (message "%s => %s" (symbol-name varname) (symbol-value varname))
110: (message "%s has no value" (symbol-name varname))))
111:
112: (defun ml-set (str val) (set (intern str) val))
113:
114: (defun ml-message (&rest args) (message "%s" (apply 'concat args)))
115:
116: (defun kill-to-end-of-line ()
117: (ml-prefix-argument-loop
118: (if (eolp)
119: (kill-region (point) (1+ (point)))
120: (kill-region (point) (if (search-forward ?\n nil t)
121: (1- (point)) (point-max))))))
122:
123: (defun set-auto-fill-hook (arg)
124: (setq auto-fill-hook (intern arg)))
125:
126: (defun auto-execute (function pattern)
127: (if (/= (aref pattern 0) ?*)
128: (error "Only patterns starting with * supported in auto-execute"))
129: (setq auto-mode-alist (cons (cons (concat "\\." (substring pattern 1)
130: "$")
131: function)
132: auto-mode-alist)))
133:
134: (defun move-to-comment-column ()
135: (indent-to comment-column))
136:
137: (defun erase-region ()
138: (delete-region (point) (mark)))
139:
140: (defun delete-region-to-buffer (bufname)
141: (copy-to-buffer bufname (point) (mark))
142: (delete-region (point) (mark)))
143:
144: (defun copy-region-to-buffer (bufname)
145: (copy-to-buffer bufname (point) (mark)))
146:
147: (defun append-region-to-buffer (bufname)
148: (append-to-buffer bufname (point) (mark)))
149:
150: (defun prepend-region-to-buffer (bufname)
151: (prepend-to-buffer bufname (point) (mark)))
152:
153: (defun delete-next-character ()
154: (delete-char (ml-prefix-argument)))
155:
156: (defun delete-next-word ()
157: (delete-region (point) (progn (forward-word (ml-prefix-argument)) (point))))
158:
159: (defun delete-previous-word ()
160: (delete-region (point) (progn (backward-word (ml-prefix-argument)) (point))))
161:
162: (defun delete-previous-character ()
163: (delete-backward-char (ml-prefix-argument)))
164:
165: (defun forward-character ()
166: (forward-char (ml-prefix-argument)))
167:
168: (defun backward-character ()
169: (backward-char (ml-prefix-argument)))
170:
171: (defun ml-newline ()
172: (newline (ml-prefix-argument)))
173:
174: (defun ml-next-line ()
175: (next-line (ml-prefix-argument)))
176:
177: (defun ml-previous-line ()
178: (previous-line (ml-prefix-argument)))
179:
180: (defun delete-to-kill-buffer ()
181: (kill-region (point) (mark)))
182:
183: (defun narrow-region ()
184: (narrow-to-region (point) (mark)))
185:
186: (defun ml-newline-and-indent ()
187: (let ((column (current-indentation)))
188: (newline (ml-prefix-argument))
189: (indent-to column)))
190:
191: (defun newline-and-backup ()
192: (open-line (ml-prefix-argument)))
193:
194: (defun quote-char ()
195: (quoted-insert (ml-prefix-argument)))
196:
197: (defun ml-current-column ()
198: (1+ (current-column)))
199:
200: (defun ml-current-indent ()
201: (1+ (current-indentation)))
202:
203: (defun region-around-match (&optional n)
204: (set-mark (match-beginning n))
205: (goto-char (match-end n)))
206:
207: (defun region-to-string ()
208: (buffer-substring (min (point) (mark)) (max (point) (mark))))
209:
210: (defun use-abbrev-table (name)
211: (let ((symbol (intern (concat name "-abbrev-table"))))
212: (or (boundp symbol)
213: (define-abbrev-table symbol nil))
214: (symbol-value symbol)))
215:
216: (defun define-hooked-local-abbrev (name exp hook)
217: (define-local-abbrev name exp (intern hook)))
218:
219: (defun define-hooked-global-abbrev (name exp hook)
220: (define-global-abbrev name exp (intern hook)))
221:
222: (defun case-word-lower ()
223: (ml-casify-word 'downcase-region))
224:
225: (defun case-word-upper ()
226: (ml-casify-word 'upcase-region))
227:
228: (defun case-word-capitalize ()
229: (ml-casify-word 'capitalize-region))
230:
231: (defun ml-casify-word (fun)
232: (save-excursion
233: (forward-char 1)
234: (forward-word -1)
235: (funcall fun (point)
236: (progn (forward-word (ml-prefix-argument))
237: (point)))))
238:
239: (defun case-region-lower ()
240: (downcase-region (point) (mark)))
241:
242: (defun case-region-upper ()
243: (upcase-region (point) (mark)))
244:
245: (defun case-region-capitalize ()
246: (capitalize-region (point) (mark)))
247:
248: (defvar saved-command-line-args nil)
249:
250: (defun argc ()
251: (or saved-command-line-args
252: (setq saved-command-line-args command-line-args
253: command-line-args ()))
254: (length command-line-args))
255:
256: (defun argv (i)
257: (or saved-command-line-args
258: (setq saved-command-line-args command-line-args
259: command-line-args ()))
260: (nth i saved-command-line-args))
261:
262: (defun invisible-argc ()
263: (length (or saved-command-line-args
264: command-line-args)))
265:
266: (defun invisible-argv (i)
267: (nth i (or saved-command-line-args
268: command-line-args)))
269:
270: (defun exit-emacs ()
271: (interactive)
272: (condition-case ()
273: (exit-recursive-edit)
274: (error (kill-emacs))))
275:
276: ;; Lisp function buffer-size returns total including invisible;
277: ;; mocklisp wants just visible.
278: (defun ml-buffer-size ()
279: (- (point-max) (point-min)))
280:
281: (defun previous-command ()
282: last-command)
283:
284: (defun beginning-of-window ()
285: (goto-char (window-start)))
286:
287: (defun end-of-window ()
288: (goto-char (window-start))
289: (vertical-motion (- (window-height) 2)))
290:
291: (defun ml-search-forward (string)
292: (search-forward string nil nil (ml-prefix-argument)))
293:
294: (defun ml-re-search-forward (string)
295: (re-search-forward string nil nil (ml-prefix-argument)))
296:
297: (defun ml-search-backward (string)
298: (search-backward string nil nil (ml-prefix-argument)))
299:
300: (defun ml-re-search-backward (string)
301: (re-search-backward string nil nil (ml-prefix-argument)))
302:
303: (defvar use-users-shell 1
304: "Mocklisp compatibility variable; 1 means use shell from SHELL env var.
305: 0 means use /bin/sh.")
306:
307: (defvar use-csh-option-f 1
308: "Mocklisp compatibility variable; 1 means pass -f when calling csh.")
309:
310: (defun filter-region (command)
311: (let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
312: (csh (equal (file-name-nondirectory shell) "csh")))
313: (call-process-region (point) (mark) shell t t nil
314: (if (and csh use-csh-option-f) "-cf" "-c")
315: (concat "exec " command))))
316:
317: (defun execute-monitor-command (command)
318: (let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
319: (csh (equal (file-name-nondirectory shell) "csh")))
320: (call-process shell nil t t
321: (if (and csh use-csh-option-f) "-cf" "-c")
322: (concat "exec " command))))
323:
324: (defun use-syntax-table (name)
325: (set-syntax-table (symbol-value (intern (concat name "-syntax-table")))))
326:
327: (defun line-to-top-of-window ()
328: (recenter (1- (ml-prefix-argument))))
329:
330: (defun ml-previous-page (&optional arg)
331: (let ((count (or arg (ml-prefix-argument))))
332: (while (> count 0)
333: (scroll-down nil)
334: (setq count (1- count)))
335: (while (< count 0)
336: (scroll-up nil)
337: (setq count (1+ count)))))
338:
339: (defun ml-next-page ()
340: (previous-page (- (ml-prefix-argument))))
341:
342: (defun page-next-window (&optional arg)
343: (let ((count (or arg (ml-prefix-argument))))
344: (while (> count 0)
345: (scroll-other-window nil)
346: (setq count (1- count)))
347: (while (< count 0)
348: (scroll-other-window '-)
349: (setq count (1+ count)))))
350:
351: (defun ml-next-window ()
352: (select-window (next-window)))
353:
354: (defun ml-previous-window ()
355: (select-window (previous-window)))
356:
357: (defun scroll-one-line-up ()
358: (scroll-up (ml-prefix-argument)))
359:
360: (defun scroll-one-line-down ()
361: (scroll-down (ml-prefix-argument)))
362:
363: (defun split-current-window ()
364: (split-window (selected-window)))
365:
366: (defun last-key-struck () last-command-char)
367:
368: (defun execute-mlisp-line (string)
369: (eval (read string)))
370:
371: (defun move-dot-to-x-y (x y)
372: (goto-char (window-start (selected-window)))
373: (vertical-motion (1- y))
374: (move-to-column (1- x)))
375:
376: (defun ml-modify-syntax-entry (string)
377: (let ((i 5)
378: (len (length string))
379: (datastring (substring string 0 2)))
380: (if (= (aref string 0) ?\-)
381: (aset datastring 0 ?\ ))
382: (if (= (aref string 2) ?\{)
383: (if (= (aref string 4) ?\ )
384: (aset datastring 0 ?\<)
385: (error "Two-char comment delimiter: use modify-syntax-entry directly")))
386: (if (= (aref string 3) ?\})
387: (if (= (aref string 4) ?\ )
388: (aset datastring 0 ?\>)
389: (error "Two-char comment delimiter: use modify-syntax-entry directly")))
390: (while (< i len)
391: (modify-syntax-entry (aref string i) datastring)
392: (setq i (1+ i))
393: (if (and (< i len)
394: (= (aref string i) ?\-))
395: (let ((c (aref string (1- i)))
396: (lim (aref string (1+ i))))
397: (while (<= c lim)
398: (modify-syntax-entry c datastring)
399: (setq c (1+ c)))
400: (setq i (+ 2 i)))))))
401:
402:
403:
404: (defun ml-substr (string from to)
405: (let ((length (length string)))
406: (if (< from 0) (setq from (+ from length)))
407: (if (< to 0) (setq to (+ to length)))
408: (substring string from (+ from to))))
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