Mercurial > hg > xemacs-beta
annotate src/callint.c @ 5936:574f0cded429 cygwin
try to replace all nnnL or nnnUL constants with EMACS_[U]INT
author | Henry Thompson <ht@markup.co.uk> |
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date | Sun, 13 Dec 2015 13:22:58 +0000 |
parents | 56144c8593a8 |
children |
rev | line source |
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428 | 1 /* Call a Lisp function interactively. |
2 Copyright (C) 1985, 1986, 1992, 1993, 1994 Free Software Foundation, Inc. | |
793 | 3 Copyright (C) 1995, 1996, 2001, 2002 Ben Wing. |
428 | 4 |
5 This file is part of XEmacs. | |
6 | |
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7 XEmacs is free software: you can redistribute it and/or modify it |
428 | 8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation, either version 3 of the License, or (at your |
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10 option) any later version. |
428 | 11 |
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
428 | 19 |
20 /* Synched up with: FSF 19.30, Mule 2.0. */ | |
21 | |
22 /* Authorship: | |
23 | |
24 FSF: long ago. | |
25 Mly or JWZ: various changes. | |
26 */ | |
27 | |
28 #include <config.h> | |
29 #include "lisp.h" | |
30 | |
31 #include "buffer.h" | |
32 #include "bytecode.h" | |
33 #include "commands.h" | |
34 #include "events.h" | |
35 #include "insdel.h" | |
872 | 36 #include "window-impl.h" /* WINDOW_MINI_P */ |
428 | 37 |
1204 | 38 extern Charcount num_input_chars; |
428 | 39 |
40 Lisp_Object Vcurrent_prefix_arg; | |
41 Lisp_Object Qcall_interactively; | |
42 Lisp_Object Vcommand_history; | |
43 | |
44 Lisp_Object Vcommand_debug_status, Qcommand_debug_status; | |
45 Lisp_Object Qenable_recursive_minibuffers; | |
46 | |
47 #if 0 /* FSFmacs */ | |
48 /* Non-nil means treat the mark as active | |
49 even if mark_active is 0. */ | |
50 Lisp_Object Vmark_even_if_inactive; | |
51 #endif | |
52 | |
53 #if 0 /* ill-conceived */ | |
444 | 54 /* FSF calls Qmouse_leave_buffer_hook at all sorts of random places, |
55 including a bunch of places in their mouse.el. If this is | |
56 implemented, it has to be done cleanly. */ | |
428 | 57 Lisp_Object Vmouse_leave_buffer_hook, Qmouse_leave_buffer_hook; |
58 #endif | |
59 | |
442 | 60 Lisp_Object QletX, Qsave_excursion; |
428 | 61 |
62 Lisp_Object Qread_from_minibuffer; | |
63 Lisp_Object Qread_file_name; | |
64 Lisp_Object Qread_directory_name; | |
65 Lisp_Object Qcompleting_read; | |
66 Lisp_Object Qread_buffer; | |
67 Lisp_Object Qread_function; | |
68 Lisp_Object Qread_variable; | |
69 Lisp_Object Qread_expression; | |
70 Lisp_Object Qread_command; | |
71 Lisp_Object Qread_number; | |
72 Lisp_Object Qread_string; | |
73 Lisp_Object Qevents_to_keys; | |
74 | |
75 Lisp_Object Qread_coding_system; | |
76 Lisp_Object Qread_non_nil_coding_system; | |
77 | |
78 /* ARGSUSED */ | |
79 DEFUN ("interactive", Finteractive, 0, UNEVALLED, 0, /* | |
80 Specify a way of parsing arguments for interactive use of a function. | |
81 For example, write | |
82 (defun foo (arg) "Doc string" (interactive "p") ...use arg...) | |
83 to make ARG be the prefix argument when `foo' is called as a command. | |
84 The "call" to `interactive' is actually a declaration rather than a function; | |
85 it tells `call-interactively' how to read arguments | |
86 to pass to the function. | |
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87 The interactive form must appear at the top level of the function body. If |
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88 it is wrapped in a `let' or `progn' or similar, Lisp will not even realize |
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89 the function is an interactive command! |
428 | 90 When actually called, `interactive' just returns nil. |
91 | |
92 The argument of `interactive' is usually a string containing a code letter | |
93 followed by a prompt. (Some code letters do not use I/O to get | |
94 the argument and do not need prompts.) To prompt for multiple arguments, | |
95 give a code letter, its prompt, a newline, and another code letter, etc. | |
96 Prompts are passed to format, and may use % escapes to print the | |
97 arguments that have already been read. | |
98 If the argument is not a string, it is evaluated to get a list of | |
99 arguments to pass to the function. | |
100 Just `(interactive)' means pass no args when calling interactively. | |
101 | |
102 Code letters available are: | |
103 a -- Function name: symbol with a function definition. | |
104 b -- Name of existing buffer. | |
105 B -- Name of buffer, possibly nonexistent. | |
106 c -- Character. | |
107 C -- Command name: symbol with interactive function definition. | |
108 d -- Value of point as number. Does not do I/O. | |
109 D -- Directory name. | |
110 e -- Last mouse-button or misc-user event that invoked this command. | |
111 If used more than once, the Nth `e' returns the Nth such event. | |
112 Does not do I/O. | |
113 f -- Existing file name. | |
114 F -- Possibly nonexistent file name. | |
115 i -- Always nil, ignore. Use to skip arguments when interactive. | |
116 k -- Key sequence (a vector of events). | |
117 K -- Key sequence to be redefined (do not automatically down-case). | |
118 m -- Value of mark as number. Does not do I/O. | |
119 n -- Number read using minibuffer. | |
120 N -- Prefix arg converted to number, or if none, do like code `n'. | |
121 p -- Prefix arg converted to number. Does not do I/O. | |
122 P -- Prefix arg in raw form. Does not do I/O. | |
123 r -- Region: point and mark as 2 numeric args, smallest first. Does no I/O. | |
124 s -- Any string. | |
125 S -- Any symbol. | |
126 v -- Variable name: symbol that is user-variable-p. | |
127 x -- Lisp expression read but not evaluated. | |
128 X -- Lisp expression read and evaluated. | |
129 z -- Coding system. (Always nil if no Mule support.) | |
130 Z -- Coding system, nil if no prefix arg. (Always nil if no Mule support.) | |
131 In addition, if the string begins with `*' | |
132 then an error is signaled if the buffer is read-only. | |
133 This happens before reading any arguments. | |
134 If the string begins with `@', then the window the mouse is over is selected | |
135 before anything else is done. | |
136 If the string begins with `_', then this command will not cause the region | |
137 to be deactivated when it completes; that is, `zmacs-region-stays' will be | |
138 set to t when the command exits successfully. | |
139 You may use any of `@', `*' and `_' at the beginning of the string; | |
140 they are processed in the order that they appear. | |
502 | 141 |
142 | |
143 When writing your own interactive spec, it can be useful to know the | |
144 equivalent Lisp expressions for the various code letters. They are: | |
145 | |
146 a -- (read-function "PROMPT") | |
147 b -- (let ((def (current-buffer))) | |
148 (if (eq (selected-window) (active-minibuffer-window)) | |
149 (setq def (other-buffer def)) | |
150 (read-buffer "PROMPT" def t))) | |
151 B -- (read-buffer "PROMPT" (other-buffer (current-buffer))) | |
152 c -- (prog1 | |
153 (let ((cursor-in-echo-area t)) | |
154 (message "%s" "PROMPT") | |
155 (read-char)) | |
156 (message nil)) | |
157 C -- (read-command "PROMPT") | |
158 d -- (point) | |
159 D -- (read-directory-name "PROMPT" nil default-directory t) | |
160 e -- current-mouse-event ;; #### not quite right. needs access to the KEYS | |
161 ;; argument of `call-interactively', but that's | |
162 ;; currently impossible. | |
163 f -- (read-file-name "PROMPT" nil nil 0) | |
164 F -- (read-file-name "PROMPT") | |
165 i -- nil | |
166 k -- (read-key-sequence "PROMPT") | |
167 K -- (read-key-sequence "PROMPT" nil t) | |
168 m -- (mark) | |
169 n -- (read-number "PROMPT") | |
170 N -- (if current-prefix-arg | |
171 (prefix-numeric-value current-prefix-arg) | |
172 (read-number "PROMPT")) | |
173 p -- (prefix-numeric-value current-prefix-arg) | |
174 P -- current-prefix-arg | |
175 r -- (if (and zmacs-regions (not zmacs-region-active-p)) | |
176 (error "The region is not active now")) | |
177 (let ((tem (marker-buffer (mark-marker t)))) | |
178 (unless (and tem (eq tem (current-buffer))) | |
179 (error "The mark is now set now"))) | |
180 (region-beginning) + | |
181 (region-end) | |
182 s -- (read-string "PROMPT") | |
183 S -- (let (tem prev-tem) | |
184 (while (not tem) | |
185 (setq tem (completing-read "PROMPT" obarray nil nil prev-tem)) | |
186 (setq prev-tem tem) | |
187 (setq tem (intern tem)) | |
188 (if (= (length tem) 0) | |
189 (setq tem nil)))) | |
190 v -- (read-variable "PROMPT") | |
191 x -- (read-expression "PROMPT") | |
192 X -- (eval (read-expression "PROMPT")) | |
193 z -- (and (fboundp 'read-coding-system) (read-coding-system "PROMPT")) | |
194 Z -- (and current-prefix-arg (fboundp 'read-coding-system) | |
195 (read-coding-system "PROMPT")) | |
196 | |
197 `*' (barf-if-buffer-read-only) | |
198 `@' (let ((event current-mouse-event)) ;; #### not quite right; needs the | |
199 (when event ;; value from the `e' spec above. | |
200 (let ((window event-window event)) | |
201 (when window | |
202 (if (and (window-minibuffer-p window) | |
203 (not (and (> (minibuffer-depth) 0) | |
204 (eq window (active-minibuffer-window))))) | |
205 (error "Attempt to select inactive minibuffer window")) | |
206 (select window))))) | |
4652 | 207 `_' (setq zmacs-region-stays t) *//* FIXME: moving end of previous comment |
208 to a separate line causes docstring lossage! */ | |
2286 | 209 (UNUSED (args))) |
428 | 210 { |
211 return Qnil; | |
212 } | |
213 | |
214 /* Modify EXPR by quotifying each element (except the first). */ | |
215 static Lisp_Object | |
216 quotify_args (Lisp_Object expr) | |
217 { | |
2367 | 218 EXTERNAL_LIST_LOOP_3 (elt, expr, tail) |
219 XSETCAR (tail, Fquote_maybe (elt)); | |
428 | 220 return expr; |
221 } | |
222 | |
665 | 223 static Charbpos |
428 | 224 check_mark (void) |
225 { | |
226 Lisp_Object tem; | |
227 | |
228 if (zmacs_regions && !zmacs_region_active_p) | |
563 | 229 invalid_operation ("The region is not active now", Qunbound); |
428 | 230 |
231 tem = Fmarker_buffer (current_buffer->mark); | |
232 if (NILP (tem) || (XBUFFER (tem) != current_buffer)) | |
563 | 233 invalid_operation ("The mark is not set now", Qunbound); |
428 | 234 |
235 return marker_position (current_buffer->mark); | |
236 } | |
237 | |
238 static Lisp_Object | |
867 | 239 callint_prompt (const Ibyte *prompt_start, Bytecount prompt_length, |
442 | 240 const Lisp_Object *args, int nargs) |
428 | 241 { |
242 Lisp_Object s = make_string (prompt_start, prompt_length); | |
243 struct gcpro gcpro1; | |
244 | |
245 /* Fformat no longer smashes its arg vector, so no need to copy it. */ | |
246 | |
247 if (!strchr ((char *) XSTRING_DATA (s), '%')) | |
248 return s; | |
249 GCPRO1 (s); | |
771 | 250 RETURN_UNGCPRO (emacs_vsprintf_string_lisp (0, s, nargs, args)); |
428 | 251 } |
252 | |
253 /* `lambda' for RECORD-FLAG is an XEmacs addition. */ | |
254 | |
255 DEFUN ("call-interactively", Fcall_interactively, 1, 3, 0, /* | |
256 Call FUNCTION, reading args according to its interactive calling specs. | |
257 Return the value FUNCTION returns. | |
258 The function contains a specification of how to do the argument reading. | |
259 In the case of user-defined functions, this is specified by placing a call | |
260 to the function `interactive' at the top level of the function body. | |
261 See `interactive'. | |
262 | |
263 If optional second arg RECORD-FLAG is the symbol `lambda', the interactive | |
264 calling arguments for FUNCTION are read and returned as a list, | |
265 but the function is not called on them. | |
266 | |
267 If RECORD-FLAG is `t' then unconditionally put this command in the | |
268 command-history. Otherwise, this is done only if an arg is read using | |
269 the minibuffer. | |
270 | |
271 The argument KEYS specifies the value to use instead of (this-command-keys) | |
272 when reading the arguments. | |
273 */ | |
274 (function, record_flag, keys)) | |
275 { | |
276 /* This function can GC */ | |
277 int speccount = specpdl_depth (); | |
278 Lisp_Object prefix; | |
279 | |
280 Lisp_Object fun; | |
281 Lisp_Object specs = Qnil; | |
282 #ifdef IT_SEEMS_THAT_MLY_DOESNT_LIKE_THIS | |
283 Lisp_Object enable; | |
284 #endif | |
793 | 285 /* If SPECS is a string, we reset prompt_data to XSTRING_DATA (specs) |
286 every time a GC might have occurred */ | |
442 | 287 const char *prompt_data = 0; |
428 | 288 int prompt_index = 0; |
289 int argcount; | |
290 int set_zmacs_region_stays = 0; | |
291 int mouse_event_count = 0; | |
292 | |
293 if (!NILP (keys)) | |
294 { | |
295 int i, len; | |
296 | |
297 CHECK_VECTOR (keys); | |
298 len = XVECTOR_LENGTH (keys); | |
299 for (i = 0; i < len; i++) | |
300 CHECK_LIVE_EVENT (XVECTOR_DATA (keys)[i]); | |
301 } | |
302 | |
303 /* Save this now, since use of minibuffer will clobber it. */ | |
304 prefix = Vcurrent_prefix_arg; | |
305 | |
306 retry: | |
307 | |
308 #ifdef IT_SEEMS_THAT_MLY_DOESNT_LIKE_THIS | |
309 /* Marginal kludge. Use an evaluated interactive spec instead of this! */ | |
310 if (SYMBOLP (function)) | |
311 enable = Fget (function, Qenable_recursive_minibuffers, Qnil); | |
312 #endif | |
313 | |
314 fun = indirect_function (function, 1); | |
315 | |
316 /* Decode the kind of function. Either handle it and return, | |
317 or go to `lose' if not interactive, or go to `retry' | |
318 to specify a different function, or set either PROMPT_DATA or SPECS. */ | |
319 | |
320 if (SUBRP (fun)) | |
321 { | |
322 prompt_data = XSUBR (fun)->prompt; | |
323 if (!prompt_data) | |
324 { | |
325 lose: | |
326 function = wrong_type_argument (Qcommandp, function); | |
327 goto retry; | |
328 } | |
329 #if 0 /* FSFmacs */ /* Huh? Where is this used? */ | |
330 if ((EMACS_INT) prompt_data == 1) | |
331 /* Let SPECS (which is nil) be used as the args. */ | |
332 prompt_data = 0; | |
333 #endif | |
334 } | |
335 else if (COMPILED_FUNCTIONP (fun)) | |
336 { | |
337 Lisp_Compiled_Function *f = XCOMPILED_FUNCTION (fun); | |
338 if (! f->flags.interactivep) | |
339 goto lose; | |
340 specs = compiled_function_interactive (f); | |
341 } | |
342 else if (!CONSP (fun)) | |
343 goto lose; | |
344 else | |
345 { | |
346 Lisp_Object funcar = Fcar (fun); | |
347 | |
348 if (EQ (funcar, Qautoload)) | |
349 { | |
970 | 350 struct gcpro gcpro1; |
351 GCPRO1 (prefix); | |
352 /* do_autoload GCPROs both arguments */ | |
428 | 353 do_autoload (fun, function); |
354 UNGCPRO; | |
355 goto retry; | |
356 } | |
357 else if (EQ (funcar, Qlambda)) | |
358 { | |
359 specs = Fassq (Qinteractive, Fcdr (Fcdr (fun))); | |
360 if (NILP (specs)) | |
361 goto lose; | |
362 specs = Fcar (Fcdr (specs)); | |
363 } | |
364 else | |
365 goto lose; | |
366 } | |
367 | |
2367 | 368 /* FSFmacs makes an ALLOCA() copy of prompt_data here. |
428 | 369 We're more intelligent about this and just reset prompt_data |
370 as necessary. */ | |
371 /* If either specs or prompt_data is set to a string, use it. */ | |
372 if (!STRINGP (specs) && prompt_data == 0) | |
373 { | |
374 struct gcpro gcpro1, gcpro2, gcpro3; | |
375 int i = num_input_chars; | |
376 Lisp_Object input = specs; | |
377 | |
378 GCPRO3 (function, specs, input); | |
379 /* Compute the arg values using the user's expression. */ | |
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380 specs = IGNORE_MULTIPLE_VALUES (Feval (specs)); |
428 | 381 if (EQ (record_flag, Qlambda)) /* XEmacs addition */ |
382 { | |
383 UNGCPRO; | |
384 return specs; | |
385 } | |
386 if (!NILP (record_flag) || i != num_input_chars) | |
387 { | |
388 /* We should record this command on the command history. */ | |
389 /* #### The following is too specific; should have general | |
390 mechanism for doing this. */ | |
391 Lisp_Object values, car; | |
392 /* Make a copy of the list of values, for the command history, | |
393 and turn them into things we can eval. */ | |
394 values = quotify_args (Fcopy_sequence (specs)); | |
395 /* If the list of args was produced with an explicit call to `list', | |
396 look for elements that were computed with (region-beginning) | |
397 or (region-end), and put those expressions into VALUES | |
398 instead of the present values. */ | |
399 if (CONSP (input)) | |
400 { | |
401 car = XCAR (input); | |
402 /* Skip through certain special forms. */ | |
403 while (EQ (car, Qlet) || EQ (car, QletX) | |
404 || EQ (car, Qsave_excursion)) | |
405 { | |
406 while (CONSP (XCDR (input))) | |
407 input = XCDR (input); | |
408 input = XCAR (input); | |
409 if (!CONSP (input)) | |
410 break; | |
411 car = XCAR (input); | |
412 } | |
413 if (EQ (car, Qlist)) | |
414 { | |
415 Lisp_Object intail, valtail; | |
416 for (intail = Fcdr (input), valtail = values; | |
417 CONSP (valtail); | |
418 intail = Fcdr (intail), valtail = Fcdr (valtail)) | |
419 { | |
420 Lisp_Object elt; | |
421 elt = Fcar (intail); | |
422 if (CONSP (elt)) | |
423 { | |
424 Lisp_Object eltcar = Fcar (elt); | |
425 if (EQ (eltcar, Qpoint) || | |
426 EQ (eltcar, Qmark) || | |
427 EQ (eltcar, Qregion_beginning) || | |
428 EQ (eltcar, Qregion_end)) | |
429 Fsetcar (valtail, Fcar (intail)); | |
430 } | |
431 } | |
432 } | |
433 } | |
434 Vcommand_history | |
435 = Fcons (Fcons (function, values), Vcommand_history); | |
436 } | |
437 single_console_state (); | |
438 RETURN_UNGCPRO (apply1 (fun, specs)); | |
439 } | |
440 | |
441 /* Here if function specifies a string to control parsing the defaults */ | |
442 | |
443 #ifdef I18N3 | |
444 /* Translate interactive prompt. */ | |
445 if (STRINGP (specs)) | |
446 { | |
447 Lisp_Object domain = Qnil; | |
448 if (COMPILED_FUNCTIONP (fun)) | |
449 domain = compiled_function_domain (XCOMPILED_FUNCTION (fun)); | |
450 if (NILP (domain)) | |
451 specs = Fgettext (specs); | |
452 else | |
453 specs = Fdgettext (domain, specs); | |
454 } | |
455 else if (prompt_data) | |
456 /* We do not have to worry about domains in this case because | |
457 prompt_data is non-nil only for built-in functions, which | |
458 always use the default domain. */ | |
459 prompt_data = gettext (prompt_data); | |
460 #endif | |
461 | |
462 /* Handle special starting chars `*' and `@' and `_'. */ | |
463 /* Note that `+' is reserved for user extensions. */ | |
464 prompt_index = 0; | |
465 { | |
466 struct gcpro gcpro1, gcpro2; | |
467 GCPRO2 (function, specs); | |
468 | |
469 for (;;) | |
470 { | |
471 if (STRINGP (specs)) | |
442 | 472 prompt_data = (const char *) XSTRING_DATA (specs); |
428 | 473 |
474 if (prompt_data[prompt_index] == '+') | |
563 | 475 syntax_error ("`+' is not used in `interactive' for ordinary commands", Qunbound); |
428 | 476 else if (prompt_data[prompt_index] == '*') |
477 { | |
478 prompt_index++; | |
479 if (!NILP (current_buffer->read_only)) | |
480 barf_if_buffer_read_only (current_buffer, -1, -1); | |
481 } | |
482 else if (prompt_data[prompt_index] == '@') | |
483 { | |
484 Lisp_Object event; | |
485 prompt_index++; | |
486 | |
487 if (!NILP (keys)) | |
488 event = extract_vector_nth_mouse_event (keys, 0); | |
489 else | |
490 #if 0 | |
491 event = extract_this_command_keys_nth_mouse_event (0); | |
492 #else | |
493 /* Doesn't work; see below */ | |
494 event = Vcurrent_mouse_event; | |
495 #endif | |
496 if (! NILP (event)) | |
497 { | |
498 Lisp_Object window = Fevent_window (event); | |
499 if (!NILP (window)) | |
500 { | |
501 if (MINI_WINDOW_P (XWINDOW (window)) | |
502 && ! (minibuf_level > 0 && EQ (window, | |
503 minibuf_window))) | |
563 | 504 invalid_operation ("Attempt to select inactive minibuffer window", Qunbound); |
428 | 505 |
506 #if 0 /* unclean! see event-stream.c */ | |
507 /* If the current buffer wants to clean up, let it. */ | |
508 if (!NILP (Vmouse_leave_buffer_hook)) | |
509 run_hook (Qmouse_leave_buffer_hook); | |
510 #endif | |
511 | |
512 Fselect_window (window, Qnil); | |
513 } | |
514 } | |
515 } | |
516 else if (prompt_data[prompt_index] == '_') | |
517 { | |
518 prompt_index++; | |
519 set_zmacs_region_stays = 1; | |
520 } | |
521 else | |
522 { | |
523 UNGCPRO; | |
524 break; | |
525 } | |
526 } | |
527 } | |
528 | |
529 /* Count the number of arguments the interactive spec would have | |
530 us give to the function. */ | |
531 argcount = 0; | |
532 { | |
442 | 533 const char *tem; |
428 | 534 for (tem = prompt_data + prompt_index; *tem; ) |
535 { | |
536 /* 'r' specifications ("point and mark as 2 numeric args") | |
537 produce *two* arguments. */ | |
538 if (*tem == 'r') | |
539 argcount += 2; | |
540 else | |
541 argcount += 1; | |
442 | 542 tem = (const char *) strchr (tem + 1, '\n'); |
428 | 543 if (!tem) |
544 break; | |
545 tem++; | |
546 } | |
547 } | |
548 | |
549 #ifdef IT_SEEMS_THAT_MLY_DOESNT_LIKE_THIS | |
550 if (!NILP (enable)) | |
551 specbind (Qenable_recursive_minibuffers, Qt); | |
552 #endif | |
553 | |
554 if (argcount == 0) | |
555 { | |
556 /* Interactive function or no arguments; just call it */ | |
557 if (EQ (record_flag, Qlambda)) | |
558 return Qnil; | |
559 if (!NILP (record_flag)) | |
560 { | |
561 Vcommand_history = Fcons (list1 (function), Vcommand_history); | |
562 } | |
563 specbind (Qcommand_debug_status, Qnil); | |
564 /* XEmacs: was fun = call0 (fun), but that's backtraced wrong */ | |
565 { | |
566 struct gcpro gcpro1; | |
567 | |
568 GCPRO1 (fun); | |
569 fun = Ffuncall (1, &fun); | |
570 UNGCPRO; | |
571 } | |
572 if (set_zmacs_region_stays) | |
573 zmacs_region_stays = 1; | |
771 | 574 return unbind_to_1 (speccount, fun); |
428 | 575 } |
576 | |
577 /* Read interactive arguments */ | |
578 { | |
579 /* args[-1] is the function to call */ | |
580 /* args[n] is the n'th argument to the function */ | |
581 int alloca_size = (1 /* function to call */ | |
582 + argcount /* actual arguments */ | |
583 + argcount /* visargs */ | |
584 + argcount /* varies */ | |
585 ); | |
586 Lisp_Object *args = alloca_array (Lisp_Object, alloca_size) + 1; | |
587 /* visargs is an array of either Qnil or user-friendlier versions (often | |
588 * strings) of previous arguments, to use in prompts for successive | |
589 * arguments. ("Often strings" because emacs didn't used to have | |
590 * format %S and prin1-to-string.) */ | |
591 Lisp_Object *visargs = args + argcount; | |
592 /* If varies[i] is non-null, the i'th argument shouldn't just have | |
593 its value in this call quoted in the command history. It should be | |
594 recorded as a call to the function named varies[i]]. */ | |
595 Lisp_Object *varies = visargs + argcount; | |
596 int arg_from_tty = 0; | |
597 REGISTER int argnum; | |
598 struct gcpro gcpro1, gcpro2; | |
599 | |
600 args[-1] = function; | |
601 for (argnum = 0; argnum < alloca_size - 1; argnum++) | |
602 args[argnum] = Qnil; | |
603 | |
604 /* Must GC-protect args[-1] (ie function) because Ffuncall doesn't */ | |
605 /* `function' itself isn't GC-protected -- use args[-1] from here | |
606 (actually, doesn't matter since Emacs GC doesn't relocate, sigh) */ | |
607 GCPRO2 (prefix, args[-1]); | |
608 gcpro2.nvars = alloca_size; | |
609 | |
610 for (argnum = 0; ; argnum++) | |
611 { | |
442 | 612 const char *prompt_start = prompt_data + prompt_index + 1; |
613 const char *prompt_limit = (const char *) strchr (prompt_start, '\n'); | |
428 | 614 int prompt_length; |
615 prompt_length = ((prompt_limit) | |
616 ? (prompt_limit - prompt_start) | |
664 | 617 : (int) strlen (prompt_start)); |
428 | 618 if (prompt_limit && prompt_limit[1] == 0) |
619 { | |
620 prompt_limit = 0; /* "sfoo:\n" -- strip tailing return */ | |
621 prompt_length -= 1; | |
622 } | |
623 /* This uses `visargs' instead of `args' so that global-set-key | |
624 prompts with "Set key C-x C-f to command: "instead of printing | |
625 event objects in there. | |
626 */ | |
867 | 627 #define PROMPT() callint_prompt ((const Ibyte *) prompt_start, prompt_length, visargs, argnum) |
428 | 628 switch (prompt_data[prompt_index]) |
629 { | |
630 case 'a': /* Symbol defined as a function */ | |
631 { | |
632 Lisp_Object tem = call1 (Qread_function, PROMPT ()); | |
633 args[argnum] = tem; | |
634 arg_from_tty = 1; | |
635 break; | |
636 } | |
637 case 'b': /* Name of existing buffer */ | |
638 { | |
639 Lisp_Object def = Fcurrent_buffer (); | |
640 if (EQ (Fselected_window (Qnil), minibuf_window)) | |
641 def = Fother_buffer (def, Qnil, Qnil); | |
642 /* read-buffer returns a buffer name, not a buffer! */ | |
643 args[argnum] = call3 (Qread_buffer, PROMPT (), def, | |
644 Qt); | |
645 arg_from_tty = 1; | |
646 break; | |
647 } | |
648 case 'B': /* Name of buffer, possibly nonexistent */ | |
649 { | |
650 /* read-buffer returns a buffer name, not a buffer! */ | |
651 args[argnum] = call2 (Qread_buffer, PROMPT (), | |
652 Fother_buffer (Fcurrent_buffer (), Qnil, | |
653 Qnil)); | |
654 arg_from_tty = 1; | |
655 break; | |
656 } | |
657 case 'c': /* Character */ | |
658 { | |
659 Lisp_Object tem; | |
660 int shadowing_speccount = specpdl_depth (); | |
661 | |
662 specbind (Qcursor_in_echo_area, Qt); | |
663 message ("%s", XSTRING_DATA (PROMPT ())); | |
664 tem = (call0 (Qread_char)); | |
665 args[argnum] = tem; | |
666 /* visargs[argnum] = Fsingle_key_description (tem); */ | |
667 /* FSF has visargs[argnum] = Fchar_to_string (tem); */ | |
668 | |
771 | 669 unbind_to (shadowing_speccount); |
428 | 670 |
671 /* #### `C-x / a' should not leave the prompt in the minibuffer. | |
672 This isn't the right fix, because (message ...) (read-char) | |
673 shouldn't leave the message there either... */ | |
674 clear_message (); | |
675 | |
676 arg_from_tty = 1; | |
677 break; | |
678 } | |
679 case 'C': /* Command: symbol with interactive function */ | |
680 { | |
681 Lisp_Object tem = call1 (Qread_command, PROMPT ()); | |
682 args[argnum] = tem; | |
683 arg_from_tty = 1; | |
684 break; | |
685 } | |
686 case 'd': /* Value of point. Does not do I/O. */ | |
687 { | |
688 args[argnum] = Fcopy_marker (current_buffer->point_marker, Qt); | |
689 varies[argnum] = Qpoint; | |
690 break; | |
691 } | |
692 case 'e': | |
693 { | |
694 Lisp_Object event; | |
695 | |
696 if (!NILP (keys)) | |
697 event = extract_vector_nth_mouse_event (keys, | |
698 mouse_event_count); | |
699 else | |
700 #if 0 | |
701 /* This doesn't quite work because this-command-keys | |
702 behaves in utterly counterintuitive ways. Sometimes | |
703 it retrieves an event back in the future, e.g. when | |
704 one command invokes another command and both are | |
705 invoked with the mouse. */ | |
706 event = (extract_this_command_keys_nth_mouse_event | |
707 (mouse_event_count)); | |
708 #else | |
709 event = Vcurrent_mouse_event; | |
710 #endif | |
711 | |
712 if (NILP (event)) | |
563 | 713 signal_error (Qinvalid_operation, |
714 "function must be bound to a mouse or misc-user event", | |
715 function); | |
428 | 716 args[argnum] = event; |
717 mouse_event_count++; | |
718 break; | |
719 } | |
720 case 'D': /* Directory name. */ | |
721 { | |
722 args[argnum] = call4 (Qread_directory_name, PROMPT (), | |
723 Qnil, /* dir */ | |
724 current_buffer->directory, /* default */ | |
725 Qt /* must-match */ | |
726 ); | |
727 arg_from_tty = 1; | |
728 break; | |
729 } | |
730 case 'f': /* Existing file name. */ | |
731 { | |
732 Lisp_Object tem = call4 (Qread_file_name, PROMPT (), | |
733 Qnil, /* dir */ | |
734 Qnil, /* default */ | |
735 Qzero /* must-match */ | |
736 ); | |
737 args[argnum] = tem; | |
738 arg_from_tty = 1; | |
739 break; | |
740 } | |
741 case 'F': /* Possibly nonexistent file name. */ | |
742 { | |
743 args[argnum] = call4 (Qread_file_name, PROMPT (), | |
744 Qnil, /* dir */ | |
745 Qnil, /* default */ | |
746 Qnil /* must-match */ | |
747 ); | |
748 arg_from_tty = 1; | |
749 break; | |
750 } | |
751 case 'i': /* Ignore: always nil. Use to skip arguments. */ | |
752 { | |
753 args[argnum] = Qnil; | |
754 break; | |
755 } | |
756 case 'k': /* Key sequence (vector of events) */ | |
757 { | |
758 struct gcpro ngcpro1; | |
759 Lisp_Object tem; | |
760 Lisp_Object key_prompt = PROMPT (); | |
761 | |
762 NGCPRO1(key_prompt); | |
763 tem = Fread_key_sequence (key_prompt, Qnil, Qnil); | |
764 NUNGCPRO; | |
765 | |
766 visargs[argnum] = Fkey_description (tem); | |
767 /* The following makes `describe-key' not work with | |
768 extent-local keymaps and such; and anyway, it's | |
769 contrary to the documentation. */ | |
770 /* args[argnum] = call1 (Qevents_to_keys, tem); */ | |
771 args[argnum] = tem; | |
772 arg_from_tty = 1; | |
773 break; | |
774 } | |
775 case 'K': /* Key sequence (vector of events), | |
776 no automatic downcasing */ | |
777 { | |
778 struct gcpro ngcpro1; | |
779 Lisp_Object tem; | |
780 Lisp_Object key_prompt = PROMPT (); | |
781 | |
782 NGCPRO1(key_prompt); | |
783 tem = Fread_key_sequence (key_prompt, Qnil, Qt); | |
784 NUNGCPRO; | |
785 | |
786 visargs[argnum] = Fkey_description (tem); | |
787 /* The following makes `describe-key' not work with | |
788 extent-local keymaps and such; and anyway, it's | |
789 contrary to the documentation. */ | |
790 /* args[argnum] = call1 (Qevents_to_keys, tem); */ | |
791 args[argnum] = tem; | |
792 arg_from_tty = 1; | |
793 break; | |
794 } | |
795 | |
796 case 'm': /* Value of mark. Does not do I/O. */ | |
797 { | |
798 args[argnum] = current_buffer->mark; | |
799 varies[argnum] = Qmark; | |
800 break; | |
801 } | |
802 case 'n': /* Read number from minibuffer. */ | |
803 { | |
804 read_number: | |
805 args[argnum] = call2 (Qread_number, PROMPT (), Qnil); | |
806 /* numbers are too boring to go on command history */ | |
807 /* arg_from_tty = 1; */ | |
808 break; | |
809 } | |
810 case 'N': /* Prefix arg, else number from minibuffer */ | |
811 { | |
812 if (NILP (prefix)) | |
813 goto read_number; | |
814 else | |
815 goto prefix_value; | |
816 } | |
817 case 'P': /* Prefix arg in raw form. Does no I/O. */ | |
818 { | |
819 args[argnum] = prefix; | |
820 break; | |
821 } | |
822 case 'p': /* Prefix arg converted to number. No I/O. */ | |
823 { | |
824 prefix_value: | |
825 { | |
826 Lisp_Object tem = Fprefix_numeric_value (prefix); | |
827 args[argnum] = tem; | |
828 } | |
829 break; | |
830 } | |
831 case 'r': /* Region, point and mark as 2 args. */ | |
832 { | |
665 | 833 Charbpos tem = check_mark (); |
428 | 834 args[argnum] = (BUF_PT (current_buffer) < tem |
835 ? Fcopy_marker (current_buffer->point_marker, Qt) | |
836 : current_buffer->mark); | |
837 varies[argnum] = Qregion_beginning; | |
838 args[++argnum] = (BUF_PT (current_buffer) > tem | |
839 ? Fcopy_marker (current_buffer->point_marker, | |
840 Qt) | |
841 : current_buffer->mark); | |
842 varies[argnum] = Qregion_end; | |
843 break; | |
844 } | |
845 case 's': /* String read via minibuffer. */ | |
846 { | |
847 args[argnum] = call1 (Qread_string, PROMPT ()); | |
848 arg_from_tty = 1; | |
849 break; | |
850 } | |
851 case 'S': /* Any symbol. */ | |
852 { | |
853 visargs[argnum] = Qnil; | |
854 for (;;) | |
855 { | |
856 Lisp_Object tem = call5 (Qcompleting_read, | |
857 PROMPT (), | |
858 Vobarray, | |
859 Qnil, | |
860 Qnil, | |
861 /* nil, or prev attempt */ | |
862 visargs[argnum]); | |
863 visargs[argnum] = tem; | |
864 /* I could use condition-case with this loser, but why bother? | |
865 * tem = Fread (tem); check-symbol-p; | |
866 */ | |
867 tem = Fintern (tem, Qnil); | |
868 args[argnum] = tem; | |
793 | 869 if (XSTRING_LENGTH (XSYMBOL (tem)->name) > 0) |
428 | 870 /* Don't accept the empty-named symbol. If the loser |
871 really wants this s/he can call completing-read | |
872 directly */ | |
873 break; | |
874 } | |
875 arg_from_tty = 1; | |
876 break; | |
877 } | |
878 case 'v': /* Variable name: user-variable-p symbol */ | |
879 { | |
880 Lisp_Object tem = call1 (Qread_variable, PROMPT ()); | |
881 args[argnum] = tem; | |
882 arg_from_tty = 1; | |
883 break; | |
884 } | |
885 case 'x': /* Lisp expression read but not evaluated */ | |
886 { | |
887 args[argnum] = call1 (Qread_expression, PROMPT ()); | |
888 /* visargs[argnum] = Fprin1_to_string (args[argnum], Qnil); */ | |
889 arg_from_tty = 1; | |
890 break; | |
891 } | |
892 case 'X': /* Lisp expression read and evaluated */ | |
893 { | |
894 Lisp_Object tem = call1 (Qread_expression, PROMPT ()); | |
895 /* visargs[argnum] = Fprin1_to_string (tem, Qnil); */ | |
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896 args[argnum] = IGNORE_MULTIPLE_VALUES (Feval (tem)); |
428 | 897 arg_from_tty = 1; |
898 break; | |
899 } | |
900 case 'Z': /* Coding-system symbol or nil if no prefix */ | |
901 { | |
902 if (NILP (prefix)) | |
903 { | |
904 args[argnum] = Qnil; | |
905 } | |
906 else | |
907 { | |
908 args[argnum] = | |
909 call1 (Qread_non_nil_coding_system, PROMPT ()); | |
910 arg_from_tty = 1; | |
911 } | |
912 break; | |
913 } | |
914 case 'z': /* Coding-system symbol */ | |
915 { | |
916 args[argnum] = call1 (Qread_coding_system, PROMPT ()); | |
917 arg_from_tty = 1; | |
918 break; | |
919 } | |
920 | |
921 /* We have a case for `+' so we get an error | |
922 if anyone tries to define one here. */ | |
923 case '+': | |
924 default: | |
925 { | |
826 | 926 signal_ferror |
927 (Qsyntax_error, | |
928 "Invalid `interactive' control letter \"%c\" (#o%03o).", | |
929 prompt_data[prompt_index], prompt_data[prompt_index]); | |
428 | 930 } |
931 } | |
932 #undef PROMPT | |
933 if (NILP (visargs[argnum])) | |
934 visargs[argnum] = args[argnum]; | |
935 | |
936 if (!prompt_limit) | |
937 break; | |
938 if (STRINGP (specs)) | |
442 | 939 prompt_data = (const char *) XSTRING_DATA (specs); |
428 | 940 prompt_index += prompt_length + 1 + 1; /* +1 to skip spec, +1 for \n */ |
941 } | |
771 | 942 unbind_to (speccount); |
428 | 943 |
944 QUIT; | |
945 | |
946 if (EQ (record_flag, Qlambda)) | |
947 { | |
948 RETURN_UNGCPRO (Flist (argcount, args)); | |
949 } | |
950 | |
951 if (arg_from_tty || !NILP (record_flag)) | |
952 { | |
953 /* Reuse visargs as a temporary for constructing the command history */ | |
954 for (argnum = 0; argnum < argcount; argnum++) | |
955 { | |
956 if (!NILP (varies[argnum])) | |
957 visargs[argnum] = list1 (varies[argnum]); | |
958 else | |
959 visargs[argnum] = Fquote_maybe (args[argnum]); | |
960 } | |
961 Vcommand_history = Fcons (Fcons (args[-1], Flist (argcount, visargs)), | |
962 Vcommand_history); | |
963 } | |
964 | |
965 /* If we used a marker to hold point, mark, or an end of the region, | |
966 temporarily, convert it to an integer now. */ | |
967 for (argnum = 0; argnum < argcount; argnum++) | |
968 if (!NILP (varies[argnum])) | |
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969 args[argnum] = make_fixnum (marker_position (args[argnum])); |
428 | 970 |
971 single_console_state (); | |
972 specbind (Qcommand_debug_status, Qnil); | |
973 fun = Ffuncall (argcount + 1, args - 1); | |
974 UNGCPRO; | |
975 if (set_zmacs_region_stays) | |
976 zmacs_region_stays = 1; | |
771 | 977 return unbind_to_1 (speccount, fun); |
428 | 978 } |
979 } | |
980 | |
981 DEFUN ("prefix-numeric-value", Fprefix_numeric_value, 1, 1, 0, /* | |
444 | 982 Return numeric meaning of raw prefix argument RAW. |
428 | 983 A raw prefix argument is what you get from `(interactive "P")'. |
984 Its numeric meaning is what you would get from `(interactive "p")'. | |
985 */ | |
986 (raw)) | |
987 { | |
988 if (NILP (raw)) | |
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|
989 return make_fixnum (1); |
428 | 990 if (EQ (raw, Qminus)) |
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991 return make_fixnum (-1); |
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992 if (FIXNUMP (raw)) |
428 | 993 return raw; |
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994 if (CONSP (raw) && FIXNUMP (XCAR (raw))) |
428 | 995 return XCAR (raw); |
996 | |
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997 return make_fixnum (1); |
428 | 998 } |
999 | |
1000 void | |
1001 syms_of_callint (void) | |
1002 { | |
563 | 1003 DEFSYMBOL (Qcall_interactively); |
1004 DEFSYMBOL (Qread_from_minibuffer); | |
1005 DEFSYMBOL (Qcompleting_read); | |
1006 DEFSYMBOL (Qread_file_name); | |
1007 DEFSYMBOL (Qread_directory_name); | |
1008 DEFSYMBOL (Qread_string); | |
1009 DEFSYMBOL (Qread_buffer); | |
1010 DEFSYMBOL (Qread_variable); | |
1011 DEFSYMBOL (Qread_function); | |
1012 DEFSYMBOL (Qread_command); | |
1013 DEFSYMBOL (Qread_number); | |
1014 DEFSYMBOL (Qread_expression); | |
1015 DEFSYMBOL (Qread_coding_system); | |
1016 DEFSYMBOL (Qread_non_nil_coding_system); | |
1017 DEFSYMBOL (Qevents_to_keys); | |
1018 DEFSYMBOL (Qcommand_debug_status); | |
1019 DEFSYMBOL (Qenable_recursive_minibuffers); | |
428 | 1020 |
1021 defsymbol (&QletX, "let*"); | |
563 | 1022 DEFSYMBOL (Qsave_excursion); |
428 | 1023 #if 0 /* ill-conceived */ |
563 | 1024 DEFSYMBOL (Qmouse_leave_buffer_hook); |
428 | 1025 #endif |
1026 | |
1027 DEFSUBR (Finteractive); | |
1028 DEFSUBR (Fcall_interactively); | |
1029 DEFSUBR (Fprefix_numeric_value); | |
1030 } | |
1031 | |
1032 void | |
1033 vars_of_callint (void) | |
1034 { | |
1035 DEFVAR_LISP ("current-prefix-arg", &Vcurrent_prefix_arg /* | |
1036 The value of the prefix argument for this editing command. | |
1037 It may be a number, or the symbol `-' for just a minus sign as arg, | |
1038 or a list whose car is a number for just one or more C-U's | |
1039 or nil if no argument has been specified. | |
1040 This is what `(interactive "P")' returns. | |
1041 */ ); | |
1042 Vcurrent_prefix_arg = Qnil; | |
1043 | |
1044 DEFVAR_LISP ("command-history", &Vcommand_history /* | |
1045 List of recent commands that read arguments from terminal. | |
1046 Each command is represented as a form to evaluate. | |
1047 */ ); | |
1048 Vcommand_history = Qnil; | |
1049 | |
1050 DEFVAR_LISP ("command-debug-status", &Vcommand_debug_status /* | |
1051 Debugging status of current interactive command. | |
1052 Bound each time `call-interactively' is called; | |
1053 may be set by the debugger as a reminder for itself. | |
1054 */ ); | |
1055 Vcommand_debug_status = Qnil; | |
1056 | |
1057 #if 0 /* FSFmacs */ | |
1058 xxDEFVAR_LISP ("mark-even-if-inactive", &Vmark_even_if_inactive /* | |
1059 *Non-nil means you can use the mark even when inactive. | |
1060 This option makes a difference in Transient Mark mode. | |
1061 When the option is non-nil, deactivation of the mark | |
1062 turns off region highlighting, but commands that use the mark | |
1063 behave as if the mark were still active. | |
1064 */ ); | |
1065 Vmark_even_if_inactive = Qnil; | |
1066 #endif | |
1067 | |
1068 #if 0 /* Doesn't work and is totally ill-conceived anyway. */ | |
1069 xxDEFVAR_LISP ("mouse-leave-buffer-hook", &Vmouse_leave_buffer_hook /* | |
1070 Hook to run when about to switch windows with a mouse command. | |
1071 Its purpose is to give temporary modes such as Isearch mode | |
1072 a way to turn themselves off when a mouse command switches windows. | |
1073 */ ); | |
1074 Vmouse_leave_buffer_hook = Qnil; | |
1075 #endif | |
1076 } |