| 1 | /* Call a Lisp function interactively. |
| 2 | Copyright (C) 1985, 1986, 1993, 1994, 1995 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 2, 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 | #include <config.h> |
| 22 | #include "lisp.h" |
| 23 | #include "buffer.h" |
| 24 | #include "commands.h" |
| 25 | #include "keyboard.h" |
| 26 | #include "window.h" |
| 27 | #include "mocklisp.h" |
| 28 | |
| 29 | extern char *index (); |
| 30 | |
| 31 | Lisp_Object Vcurrent_prefix_arg, Qminus, Qplus; |
| 32 | Lisp_Object Qcall_interactively; |
| 33 | Lisp_Object Vcommand_history; |
| 34 | |
| 35 | Lisp_Object Vcommand_debug_status, Qcommand_debug_status; |
| 36 | Lisp_Object Qenable_recursive_minibuffers; |
| 37 | |
| 38 | /* Non-nil means treat the mark as active |
| 39 | even if mark_active is 0. */ |
| 40 | Lisp_Object Vmark_even_if_inactive; |
| 41 | |
| 42 | Lisp_Object Vmouse_leave_buffer_hook, Qmouse_leave_buffer_hook; |
| 43 | |
| 44 | Lisp_Object Qlist; |
| 45 | static Lisp_Object preserved_fns; |
| 46 | |
| 47 | /* Marker used within call-interactively to refer to point. */ |
| 48 | static Lisp_Object point_marker; |
| 49 | |
| 50 | |
| 51 | /* This comment supplies the doc string for interactive, |
| 52 | for make-docfile to see. We cannot put this in the real DEFUN |
| 53 | due to limits in the Unix cpp. |
| 54 | |
| 55 | DEFUN ("interactive", Ffoo, Sfoo, 0, 0, 0, |
| 56 | "Specify a way of parsing arguments for interactive use of a function.\n\ |
| 57 | For example, write\n\ |
| 58 | (defun foo (arg) \"Doc string\" (interactive \"p\") ...use arg...)\n\ |
| 59 | to make ARG be the prefix argument when `foo' is called as a command.\n\ |
| 60 | The \"call\" to `interactive' is actually a declaration rather than a function;\n\ |
| 61 | it tells `call-interactively' how to read arguments\n\ |
| 62 | to pass to the function.\n\ |
| 63 | When actually called, `interactive' just returns nil.\n\ |
| 64 | \n\ |
| 65 | The argument of `interactive' is usually a string containing a code letter\n\ |
| 66 | followed by a prompt. (Some code letters do not use I/O to get\n\ |
| 67 | the argument and do not need prompts.) To prompt for multiple arguments,\n\ |
| 68 | give a code letter, its prompt, a newline, and another code letter, etc.\n\ |
| 69 | Prompts are passed to format, and may use % escapes to print the\n\ |
| 70 | arguments that have already been read.\n\ |
| 71 | If the argument is not a string, it is evaluated to get a list of\n\ |
| 72 | arguments to pass to the function.\n\ |
| 73 | Just `(interactive)' means pass no args when calling interactively.\n\ |
| 74 | \nCode letters available are:\n\ |
| 75 | a -- Function name: symbol with a function definition.\n\ |
| 76 | b -- Name of existing buffer.\n\ |
| 77 | B -- Name of buffer, possibly nonexistent.\n\ |
| 78 | c -- Character.\n\ |
| 79 | C -- Command name: symbol with interactive function definition.\n\ |
| 80 | d -- Value of point as number. Does not do I/O.\n\ |
| 81 | D -- Directory name.\n\ |
| 82 | e -- Parametrized event (i.e., one that's a list) that invoked this command.\n\ |
| 83 | If used more than once, the Nth `e' returns the Nth parameterized event.\n\ |
| 84 | This skips events that are integers or symbols.\n\ |
| 85 | f -- Existing file name.\n\ |
| 86 | F -- Possibly nonexistent file name.\n\ |
| 87 | k -- Key sequence (downcase the last event if needed to get a definition).\n\ |
| 88 | K -- Key sequence to be redefined (do not downcase the last event).\n\ |
| 89 | m -- Value of mark as number. Does not do I/O.\n\ |
| 90 | n -- Number read using minibuffer.\n\ |
| 91 | N -- Raw prefix arg, or if none, do like code `n'.\n\ |
| 92 | p -- Prefix arg converted to number. Does not do I/O.\n\ |
| 93 | P -- Prefix arg in raw form. Does not do I/O.\n\ |
| 94 | r -- Region: point and mark as 2 numeric args, smallest first. Does no I/O.\n\ |
| 95 | s -- Any string.\n\ |
| 96 | S -- Any symbol.\n\ |
| 97 | v -- Variable name: symbol that is user-variable-p.\n\ |
| 98 | x -- Lisp expression read but not evaluated.\n\ |
| 99 | X -- Lisp expression read and evaluated.\n\ |
| 100 | In addition, if the string begins with `*'\n\ |
| 101 | then an error is signaled if the buffer is read-only.\n\ |
| 102 | This happens before reading any arguments.\n\ |
| 103 | If the string begins with `@', then Emacs searches the key sequence\n\ |
| 104 | which invoked the command for its first mouse click (or any other\n\ |
| 105 | event which specifies a window), and selects that window before\n\ |
| 106 | reading any arguments. You may use both `@' and `*'; they are\n\ |
| 107 | processed in the order that they appear." */ |
| 108 | |
| 109 | /* ARGSUSED */ |
| 110 | DEFUN ("interactive", Finteractive, Sinteractive, 0, UNEVALLED, 0, |
| 111 | 0 /* See immediately above */) |
| 112 | (args) |
| 113 | Lisp_Object args; |
| 114 | { |
| 115 | return Qnil; |
| 116 | } |
| 117 | |
| 118 | /* Quotify EXP: if EXP is constant, return it. |
| 119 | If EXP is not constant, return (quote EXP). */ |
| 120 | Lisp_Object |
| 121 | quotify_arg (exp) |
| 122 | register Lisp_Object exp; |
| 123 | { |
| 124 | if (!INTEGERP (exp) && !STRINGP (exp) |
| 125 | && !NILP (exp) && !EQ (exp, Qt)) |
| 126 | return Fcons (Qquote, Fcons (exp, Qnil)); |
| 127 | |
| 128 | return exp; |
| 129 | } |
| 130 | |
| 131 | /* Modify EXP by quotifying each element (except the first). */ |
| 132 | Lisp_Object |
| 133 | quotify_args (exp) |
| 134 | Lisp_Object exp; |
| 135 | { |
| 136 | register Lisp_Object tail; |
| 137 | register struct Lisp_Cons *ptr; |
| 138 | for (tail = exp; CONSP (tail); tail = ptr->cdr) |
| 139 | { |
| 140 | ptr = XCONS (tail); |
| 141 | ptr->car = quotify_arg (ptr->car); |
| 142 | } |
| 143 | return exp; |
| 144 | } |
| 145 | |
| 146 | char *callint_argfuns[] |
| 147 | = {"", "point", "mark", "region-beginning", "region-end"}; |
| 148 | |
| 149 | static void |
| 150 | check_mark () |
| 151 | { |
| 152 | Lisp_Object tem; |
| 153 | tem = Fmarker_buffer (current_buffer->mark); |
| 154 | if (NILP (tem) || (XBUFFER (tem) != current_buffer)) |
| 155 | error ("The mark is not set now"); |
| 156 | if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive) |
| 157 | && NILP (current_buffer->mark_active)) |
| 158 | Fsignal (Qmark_inactive, Qnil); |
| 159 | } |
| 160 | |
| 161 | |
| 162 | DEFUN ("call-interactively", Fcall_interactively, Scall_interactively, 1, 2, 0, |
| 163 | "Call FUNCTION, reading args according to its interactive calling specs.\n\ |
| 164 | Return the value FUNCTION returns.\n\ |
| 165 | The function contains a specification of how to do the argument reading.\n\ |
| 166 | In the case of user-defined functions, this is specified by placing a call\n\ |
| 167 | to the function `interactive' at the top level of the function body.\n\ |
| 168 | See `interactive'.\n\ |
| 169 | \n\ |
| 170 | Optional second arg RECORD-FLAG non-nil\n\ |
| 171 | means unconditionally put this command in the command-history.\n\ |
| 172 | Otherwise, this is done only if an arg is read using the minibuffer.") |
| 173 | (function, record) |
| 174 | Lisp_Object function, record; |
| 175 | { |
| 176 | Lisp_Object *args, *visargs; |
| 177 | unsigned char **argstrings; |
| 178 | Lisp_Object fun; |
| 179 | Lisp_Object funcar; |
| 180 | Lisp_Object specs; |
| 181 | Lisp_Object teml; |
| 182 | Lisp_Object enable; |
| 183 | int speccount = specpdl_ptr - specpdl; |
| 184 | |
| 185 | /* The index of the next element of this_command_keys to examine for |
| 186 | the 'e' interactive code. */ |
| 187 | int next_event; |
| 188 | |
| 189 | Lisp_Object prefix_arg; |
| 190 | unsigned char *string; |
| 191 | unsigned char *tem; |
| 192 | |
| 193 | /* If varies[i] > 0, the i'th argument shouldn't just have its value |
| 194 | in this call quoted in the command history. It should be |
| 195 | recorded as a call to the function named callint_argfuns[varies[i]]. */ |
| 196 | int *varies; |
| 197 | |
| 198 | register int i, j; |
| 199 | int count, foo; |
| 200 | char prompt[100]; |
| 201 | char prompt1[100]; |
| 202 | char *tem1; |
| 203 | int arg_from_tty = 0; |
| 204 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
| 205 | |
| 206 | /* Save this now, since use of minibuffer will clobber it. */ |
| 207 | prefix_arg = Vcurrent_prefix_arg; |
| 208 | |
| 209 | retry: |
| 210 | |
| 211 | if (SYMBOLP (function)) |
| 212 | enable = Fget (function, Qenable_recursive_minibuffers); |
| 213 | |
| 214 | fun = indirect_function (function); |
| 215 | |
| 216 | specs = Qnil; |
| 217 | string = 0; |
| 218 | |
| 219 | /* Decode the kind of function. Either handle it and return, |
| 220 | or go to `lose' if not interactive, or go to `retry' |
| 221 | to specify a different function, or set either STRING or SPECS. */ |
| 222 | |
| 223 | if (SUBRP (fun)) |
| 224 | { |
| 225 | string = (unsigned char *) XSUBR (fun)->prompt; |
| 226 | if (!string) |
| 227 | { |
| 228 | lose: |
| 229 | function = wrong_type_argument (Qcommandp, function); |
| 230 | goto retry; |
| 231 | } |
| 232 | if ((EMACS_INT) string == 1) |
| 233 | /* Let SPECS (which is nil) be used as the args. */ |
| 234 | string = 0; |
| 235 | } |
| 236 | else if (COMPILEDP (fun)) |
| 237 | { |
| 238 | if ((XVECTOR (fun)->size & PSEUDOVECTOR_SIZE_MASK) <= COMPILED_INTERACTIVE) |
| 239 | goto lose; |
| 240 | specs = XVECTOR (fun)->contents[COMPILED_INTERACTIVE]; |
| 241 | } |
| 242 | else if (!CONSP (fun)) |
| 243 | goto lose; |
| 244 | else if (funcar = Fcar (fun), EQ (funcar, Qautoload)) |
| 245 | { |
| 246 | GCPRO2 (function, prefix_arg); |
| 247 | do_autoload (fun, function); |
| 248 | UNGCPRO; |
| 249 | goto retry; |
| 250 | } |
| 251 | else if (EQ (funcar, Qlambda)) |
| 252 | { |
| 253 | specs = Fassq (Qinteractive, Fcdr (Fcdr (fun))); |
| 254 | if (NILP (specs)) |
| 255 | goto lose; |
| 256 | specs = Fcar (Fcdr (specs)); |
| 257 | } |
| 258 | else if (EQ (funcar, Qmocklisp)) |
| 259 | { |
| 260 | single_kboard_state (); |
| 261 | return ml_apply (fun, Qinteractive); |
| 262 | } |
| 263 | else |
| 264 | goto lose; |
| 265 | |
| 266 | /* If either specs or string is set to a string, use it. */ |
| 267 | if (STRINGP (specs)) |
| 268 | { |
| 269 | /* Make a copy of string so that if a GC relocates specs, |
| 270 | `string' will still be valid. */ |
| 271 | string = (unsigned char *) alloca (XSTRING (specs)->size + 1); |
| 272 | bcopy (XSTRING (specs)->data, string, XSTRING (specs)->size + 1); |
| 273 | } |
| 274 | else if (string == 0) |
| 275 | { |
| 276 | Lisp_Object input; |
| 277 | i = num_input_chars; |
| 278 | input = specs; |
| 279 | /* Compute the arg values using the user's expression. */ |
| 280 | specs = Feval (specs); |
| 281 | if (i != num_input_chars || !NILP (record)) |
| 282 | { |
| 283 | /* We should record this command on the command history. */ |
| 284 | Lisp_Object values, car; |
| 285 | /* Make a copy of the list of values, for the command history, |
| 286 | and turn them into things we can eval. */ |
| 287 | values = quotify_args (Fcopy_sequence (specs)); |
| 288 | /* If the list of args was produced with an explicit call to `list', |
| 289 | look for elements that were computed with (region-beginning) |
| 290 | or (region-end), and put those expressions into VALUES |
| 291 | instead of the present values. */ |
| 292 | car = Fcar (input); |
| 293 | if (EQ (car, Qlist)) |
| 294 | { |
| 295 | Lisp_Object intail, valtail; |
| 296 | for (intail = Fcdr (input), valtail = values; |
| 297 | CONSP (valtail); |
| 298 | intail = Fcdr (intail), valtail = Fcdr (valtail)) |
| 299 | { |
| 300 | Lisp_Object elt; |
| 301 | elt = Fcar (intail); |
| 302 | if (CONSP (elt)) |
| 303 | { |
| 304 | Lisp_Object presflag; |
| 305 | presflag = Fmemq (Fcar (elt), preserved_fns); |
| 306 | if (!NILP (presflag)) |
| 307 | Fsetcar (valtail, Fcar (intail)); |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | Vcommand_history |
| 312 | = Fcons (Fcons (function, values), Vcommand_history); |
| 313 | } |
| 314 | single_kboard_state (); |
| 315 | return apply1 (function, specs); |
| 316 | } |
| 317 | |
| 318 | /* Here if function specifies a string to control parsing the defaults */ |
| 319 | |
| 320 | /* Set next_event to point to the first event with parameters. */ |
| 321 | for (next_event = 0; next_event < this_command_key_count; next_event++) |
| 322 | if (EVENT_HAS_PARAMETERS |
| 323 | (XVECTOR (this_command_keys)->contents[next_event])) |
| 324 | break; |
| 325 | |
| 326 | /* Handle special starting chars `*' and `@'. Also `-'. */ |
| 327 | /* Note that `+' is reserved for user extensions. */ |
| 328 | while (1) |
| 329 | { |
| 330 | if (*string == '+') |
| 331 | error ("`+' is not used in `interactive' for ordinary commands"); |
| 332 | else if (*string == '*') |
| 333 | { |
| 334 | string++; |
| 335 | if (!NILP (current_buffer->read_only)) |
| 336 | Fbarf_if_buffer_read_only (); |
| 337 | } |
| 338 | /* Ignore this for semi-compatibility with Lucid. */ |
| 339 | else if (*string == '-') |
| 340 | string++; |
| 341 | else if (*string == '@') |
| 342 | { |
| 343 | Lisp_Object event; |
| 344 | |
| 345 | event = XVECTOR (this_command_keys)->contents[next_event]; |
| 346 | if (EVENT_HAS_PARAMETERS (event) |
| 347 | && (event = XCONS (event)->cdr, CONSP (event)) |
| 348 | && (event = XCONS (event)->car, CONSP (event)) |
| 349 | && (event = XCONS (event)->car, WINDOWP (event))) |
| 350 | { |
| 351 | if (MINI_WINDOW_P (XWINDOW (event)) |
| 352 | && ! (minibuf_level > 0 && EQ (event, minibuf_window))) |
| 353 | error ("Attempt to select inactive minibuffer window"); |
| 354 | |
| 355 | /* If the current buffer wants to clean up, let it. */ |
| 356 | if (!NILP (Vmouse_leave_buffer_hook)) |
| 357 | call1 (Vrun_hooks, Qmouse_leave_buffer_hook); |
| 358 | |
| 359 | Fselect_window (event); |
| 360 | } |
| 361 | string++; |
| 362 | } |
| 363 | else break; |
| 364 | } |
| 365 | |
| 366 | /* Count the number of arguments the interactive spec would have |
| 367 | us give to the function. */ |
| 368 | tem = string; |
| 369 | for (j = 0; *tem; j++) |
| 370 | { |
| 371 | /* 'r' specifications ("point and mark as 2 numeric args") |
| 372 | produce *two* arguments. */ |
| 373 | if (*tem == 'r') j++; |
| 374 | tem = (unsigned char *) index (tem, '\n'); |
| 375 | if (tem) |
| 376 | tem++; |
| 377 | else |
| 378 | tem = (unsigned char *) ""; |
| 379 | } |
| 380 | count = j; |
| 381 | |
| 382 | args = (Lisp_Object *) alloca ((count + 1) * sizeof (Lisp_Object)); |
| 383 | visargs = (Lisp_Object *) alloca ((count + 1) * sizeof (Lisp_Object)); |
| 384 | argstrings = (unsigned char **) alloca ((count + 1) * sizeof (char *)); |
| 385 | varies = (int *) alloca ((count + 1) * sizeof (int)); |
| 386 | |
| 387 | for (i = 0; i < (count + 1); i++) |
| 388 | { |
| 389 | args[i] = Qnil; |
| 390 | visargs[i] = Qnil; |
| 391 | varies[i] = 0; |
| 392 | } |
| 393 | |
| 394 | GCPRO4 (prefix_arg, function, *args, *visargs); |
| 395 | gcpro3.nvars = (count + 1); |
| 396 | gcpro4.nvars = (count + 1); |
| 397 | |
| 398 | if (!NILP (enable)) |
| 399 | specbind (Qenable_recursive_minibuffers, Qt); |
| 400 | |
| 401 | tem = string; |
| 402 | for (i = 1; *tem; i++) |
| 403 | { |
| 404 | strncpy (prompt1, tem + 1, sizeof prompt1 - 1); |
| 405 | prompt1[sizeof prompt1 - 1] = 0; |
| 406 | tem1 = index (prompt1, '\n'); |
| 407 | if (tem1) *tem1 = 0; |
| 408 | /* Fill argstrings with a vector of C strings |
| 409 | corresponding to the Lisp strings in visargs. */ |
| 410 | for (j = 1; j < i; j++) |
| 411 | argstrings[j] |
| 412 | = EQ (visargs[j], Qnil) |
| 413 | ? (unsigned char *) "" |
| 414 | : XSTRING (visargs[j])->data; |
| 415 | |
| 416 | doprnt (prompt, sizeof prompt, prompt1, (char *)0, |
| 417 | j - 1, argstrings + 1); |
| 418 | |
| 419 | switch (*tem) |
| 420 | { |
| 421 | case 'a': /* Symbol defined as a function */ |
| 422 | visargs[i] = Fcompleting_read (build_string (prompt), |
| 423 | Vobarray, Qfboundp, Qt, Qnil, Qnil); |
| 424 | /* Passing args[i] directly stimulates compiler bug */ |
| 425 | teml = visargs[i]; |
| 426 | args[i] = Fintern (teml, Qnil); |
| 427 | break; |
| 428 | |
| 429 | case 'b': /* Name of existing buffer */ |
| 430 | args[i] = Fcurrent_buffer (); |
| 431 | if (EQ (selected_window, minibuf_window)) |
| 432 | args[i] = Fother_buffer (args[i], Qnil); |
| 433 | args[i] = Fread_buffer (build_string (prompt), args[i], Qt); |
| 434 | break; |
| 435 | |
| 436 | case 'B': /* Name of buffer, possibly nonexistent */ |
| 437 | args[i] = Fread_buffer (build_string (prompt), |
| 438 | Fother_buffer (Fcurrent_buffer (), Qnil), |
| 439 | Qnil); |
| 440 | break; |
| 441 | |
| 442 | case 'c': /* Character */ |
| 443 | message1 (prompt); |
| 444 | args[i] = Fread_char (); |
| 445 | /* Passing args[i] directly stimulates compiler bug */ |
| 446 | teml = args[i]; |
| 447 | visargs[i] = Fchar_to_string (teml); |
| 448 | break; |
| 449 | |
| 450 | case 'C': /* Command: symbol with interactive function */ |
| 451 | visargs[i] = Fcompleting_read (build_string (prompt), |
| 452 | Vobarray, Qcommandp, Qt, Qnil, Qnil); |
| 453 | /* Passing args[i] directly stimulates compiler bug */ |
| 454 | teml = visargs[i]; |
| 455 | args[i] = Fintern (teml, Qnil); |
| 456 | break; |
| 457 | |
| 458 | case 'd': /* Value of point. Does not do I/O. */ |
| 459 | Fset_marker (point_marker, make_number (PT), Qnil); |
| 460 | args[i] = point_marker; |
| 461 | /* visargs[i] = Qnil; */ |
| 462 | varies[i] = 1; |
| 463 | break; |
| 464 | |
| 465 | case 'D': /* Directory name. */ |
| 466 | args[i] = Fread_file_name (build_string (prompt), Qnil, |
| 467 | current_buffer->directory, Qlambda, Qnil); |
| 468 | break; |
| 469 | |
| 470 | case 'f': /* Existing file name. */ |
| 471 | args[i] = Fread_file_name (build_string (prompt), |
| 472 | Qnil, Qnil, Qlambda, Qnil); |
| 473 | break; |
| 474 | |
| 475 | case 'F': /* Possibly nonexistent file name. */ |
| 476 | args[i] = Fread_file_name (build_string (prompt), |
| 477 | Qnil, Qnil, Qnil, Qnil); |
| 478 | break; |
| 479 | |
| 480 | case 'k': /* Key sequence. */ |
| 481 | args[i] = Fread_key_sequence (build_string (prompt), Qnil, Qnil, Qnil); |
| 482 | teml = args[i]; |
| 483 | visargs[i] = Fkey_description (teml); |
| 484 | break; |
| 485 | |
| 486 | case 'K': /* Key sequence to be defined. */ |
| 487 | args[i] = Fread_key_sequence (build_string (prompt), Qnil, Qt, Qnil); |
| 488 | teml = args[i]; |
| 489 | visargs[i] = Fkey_description (teml); |
| 490 | break; |
| 491 | |
| 492 | case 'e': /* The invoking event. */ |
| 493 | if (next_event >= this_command_key_count) |
| 494 | error ("%s must be bound to an event with parameters", |
| 495 | (SYMBOLP (function) |
| 496 | ? (char *) XSYMBOL (function)->name->data |
| 497 | : "command")); |
| 498 | args[i] = XVECTOR (this_command_keys)->contents[next_event++]; |
| 499 | varies[i] = -1; |
| 500 | |
| 501 | /* Find the next parameterized event. */ |
| 502 | while (next_event < this_command_key_count |
| 503 | && ! (EVENT_HAS_PARAMETERS |
| 504 | (XVECTOR (this_command_keys)->contents[next_event]))) |
| 505 | next_event++; |
| 506 | |
| 507 | break; |
| 508 | |
| 509 | case 'm': /* Value of mark. Does not do I/O. */ |
| 510 | check_mark (); |
| 511 | /* visargs[i] = Qnil; */ |
| 512 | args[i] = current_buffer->mark; |
| 513 | varies[i] = 2; |
| 514 | break; |
| 515 | |
| 516 | case 'N': /* Prefix arg, else number from minibuffer */ |
| 517 | if (!NILP (prefix_arg)) |
| 518 | goto have_prefix_arg; |
| 519 | case 'n': /* Read number from minibuffer. */ |
| 520 | do |
| 521 | args[i] = Fread_minibuffer (build_string (prompt), Qnil); |
| 522 | while (! NUMBERP (args[i])); |
| 523 | visargs[i] = last_minibuf_string; |
| 524 | break; |
| 525 | |
| 526 | case 'P': /* Prefix arg in raw form. Does no I/O. */ |
| 527 | have_prefix_arg: |
| 528 | args[i] = prefix_arg; |
| 529 | /* visargs[i] = Qnil; */ |
| 530 | varies[i] = -1; |
| 531 | break; |
| 532 | |
| 533 | case 'p': /* Prefix arg converted to number. No I/O. */ |
| 534 | args[i] = Fprefix_numeric_value (prefix_arg); |
| 535 | /* visargs[i] = Qnil; */ |
| 536 | varies[i] = -1; |
| 537 | break; |
| 538 | |
| 539 | case 'r': /* Region, point and mark as 2 args. */ |
| 540 | check_mark (); |
| 541 | Fset_marker (point_marker, make_number (PT), Qnil); |
| 542 | /* visargs[i+1] = Qnil; */ |
| 543 | foo = marker_position (current_buffer->mark); |
| 544 | /* visargs[i] = Qnil; */ |
| 545 | args[i] = point < foo ? point_marker : current_buffer->mark; |
| 546 | varies[i] = 3; |
| 547 | args[++i] = point > foo ? point_marker : current_buffer->mark; |
| 548 | varies[i] = 4; |
| 549 | break; |
| 550 | |
| 551 | case 's': /* String read via minibuffer. */ |
| 552 | args[i] = Fread_string (build_string (prompt), Qnil, Qnil); |
| 553 | break; |
| 554 | |
| 555 | case 'S': /* Any symbol. */ |
| 556 | visargs[i] = Fread_string (build_string (prompt), Qnil, Qnil); |
| 557 | /* Passing args[i] directly stimulates compiler bug */ |
| 558 | teml = visargs[i]; |
| 559 | args[i] = Fintern (teml, Qnil); |
| 560 | break; |
| 561 | |
| 562 | case 'v': /* Variable name: symbol that is |
| 563 | user-variable-p. */ |
| 564 | args[i] = Fread_variable (build_string (prompt)); |
| 565 | visargs[i] = last_minibuf_string; |
| 566 | break; |
| 567 | |
| 568 | case 'x': /* Lisp expression read but not evaluated */ |
| 569 | args[i] = Fread_minibuffer (build_string (prompt), Qnil); |
| 570 | visargs[i] = last_minibuf_string; |
| 571 | break; |
| 572 | |
| 573 | case 'X': /* Lisp expression read and evaluated */ |
| 574 | args[i] = Feval_minibuffer (build_string (prompt), Qnil); |
| 575 | visargs[i] = last_minibuf_string; |
| 576 | break; |
| 577 | |
| 578 | /* We have a case for `+' so we get an error |
| 579 | if anyone tries to define one here. */ |
| 580 | case '+': |
| 581 | default: |
| 582 | error ("Invalid control letter `%c' (%03o) in interactive calling string", |
| 583 | *tem, *tem); |
| 584 | } |
| 585 | |
| 586 | if (varies[i] == 0) |
| 587 | arg_from_tty = 1; |
| 588 | |
| 589 | if (NILP (visargs[i]) && STRINGP (args[i])) |
| 590 | visargs[i] = args[i]; |
| 591 | |
| 592 | tem = (unsigned char *) index (tem, '\n'); |
| 593 | if (tem) tem++; |
| 594 | else tem = (unsigned char *) ""; |
| 595 | } |
| 596 | unbind_to (speccount, Qnil); |
| 597 | |
| 598 | QUIT; |
| 599 | |
| 600 | args[0] = function; |
| 601 | |
| 602 | if (arg_from_tty || !NILP (record)) |
| 603 | { |
| 604 | visargs[0] = function; |
| 605 | for (i = 1; i < count + 1; i++) |
| 606 | { |
| 607 | if (varies[i] > 0) |
| 608 | visargs[i] = Fcons (intern (callint_argfuns[varies[i]]), Qnil); |
| 609 | else |
| 610 | visargs[i] = quotify_arg (args[i]); |
| 611 | } |
| 612 | Vcommand_history = Fcons (Flist (count + 1, visargs), |
| 613 | Vcommand_history); |
| 614 | } |
| 615 | |
| 616 | /* If we used a marker to hold point, mark, or an end of the region, |
| 617 | temporarily, convert it to an integer now. */ |
| 618 | for (i = 1; i <= count; i++) |
| 619 | if (varies[i] >= 1 && varies[i] <= 4) |
| 620 | XSETINT (args[i], marker_position (args[i])); |
| 621 | |
| 622 | single_kboard_state (); |
| 623 | |
| 624 | { |
| 625 | Lisp_Object val; |
| 626 | specbind (Qcommand_debug_status, Qnil); |
| 627 | |
| 628 | val = Ffuncall (count + 1, args); |
| 629 | UNGCPRO; |
| 630 | return unbind_to (speccount, val); |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | DEFUN ("prefix-numeric-value", Fprefix_numeric_value, Sprefix_numeric_value, |
| 635 | 1, 1, 0, |
| 636 | "Return numeric meaning of raw prefix argument ARG.\n\ |
| 637 | A raw prefix argument is what you get from `(interactive \"P\")'.\n\ |
| 638 | Its numeric meaning is what you would get from `(interactive \"p\")'.") |
| 639 | (raw) |
| 640 | Lisp_Object raw; |
| 641 | { |
| 642 | Lisp_Object val; |
| 643 | |
| 644 | if (NILP (raw)) |
| 645 | XSETFASTINT (val, 1); |
| 646 | else if (EQ (raw, Qminus)) |
| 647 | XSETINT (val, -1); |
| 648 | else if (CONSP (raw) && INTEGERP (XCONS (raw)->car)) |
| 649 | XSETINT (val, XINT (XCONS (raw)->car)); |
| 650 | else if (INTEGERP (raw)) |
| 651 | val = raw; |
| 652 | else |
| 653 | XSETFASTINT (val, 1); |
| 654 | |
| 655 | return val; |
| 656 | } |
| 657 | |
| 658 | syms_of_callint () |
| 659 | { |
| 660 | point_marker = Fmake_marker (); |
| 661 | staticpro (&point_marker); |
| 662 | |
| 663 | preserved_fns = Fcons (intern ("region-beginning"), |
| 664 | Fcons (intern ("region-end"), |
| 665 | Fcons (intern ("point"), |
| 666 | Fcons (intern ("mark"), Qnil)))); |
| 667 | staticpro (&preserved_fns); |
| 668 | |
| 669 | Qlist = intern ("list"); |
| 670 | staticpro (&Qlist); |
| 671 | |
| 672 | Qminus = intern ("-"); |
| 673 | staticpro (&Qminus); |
| 674 | |
| 675 | Qplus = intern ("+"); |
| 676 | staticpro (&Qplus); |
| 677 | |
| 678 | Qcall_interactively = intern ("call-interactively"); |
| 679 | staticpro (&Qcall_interactively); |
| 680 | |
| 681 | Qcommand_debug_status = intern ("command-debug-status"); |
| 682 | staticpro (&Qcommand_debug_status); |
| 683 | |
| 684 | Qenable_recursive_minibuffers = intern ("enable-recursive-minibuffers"); |
| 685 | staticpro (&Qenable_recursive_minibuffers); |
| 686 | |
| 687 | Qmouse_leave_buffer_hook = intern ("mouse-leave-buffer-hook"); |
| 688 | staticpro (&Qmouse_leave_buffer_hook); |
| 689 | |
| 690 | DEFVAR_KBOARD ("prefix-arg", Vprefix_arg, |
| 691 | "The value of the prefix argument for the next editing command.\n\ |
| 692 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ |
| 693 | or a list whose car is a number for just one or more C-U's\n\ |
| 694 | or nil if no argument has been specified.\n\ |
| 695 | \n\ |
| 696 | You cannot examine this variable to find the argument for this command\n\ |
| 697 | since it has been set to nil by the time you can look.\n\ |
| 698 | Instead, you should use the variable `current-prefix-arg', although\n\ |
| 699 | normally commands can get this prefix argument with (interactive \"P\")."); |
| 700 | |
| 701 | DEFVAR_LISP ("current-prefix-arg", &Vcurrent_prefix_arg, |
| 702 | "The value of the prefix argument for this editing command.\n\ |
| 703 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ |
| 704 | or a list whose car is a number for just one or more C-U's\n\ |
| 705 | or nil if no argument has been specified.\n\ |
| 706 | This is what `(interactive \"P\")' returns."); |
| 707 | Vcurrent_prefix_arg = Qnil; |
| 708 | |
| 709 | DEFVAR_LISP ("command-history", &Vcommand_history, |
| 710 | "List of recent commands that read arguments from terminal.\n\ |
| 711 | Each command is represented as a form to evaluate."); |
| 712 | Vcommand_history = Qnil; |
| 713 | |
| 714 | DEFVAR_LISP ("command-debug-status", &Vcommand_debug_status, |
| 715 | "Debugging status of current interactive command.\n\ |
| 716 | Bound each time `call-interactively' is called;\n\ |
| 717 | may be set by the debugger as a reminder for itself."); |
| 718 | Vcommand_debug_status = Qnil; |
| 719 | |
| 720 | DEFVAR_LISP ("mark-even-if-inactive", &Vmark_even_if_inactive, |
| 721 | "*Non-nil means you can use the mark even when inactive.\n\ |
| 722 | This option makes a difference in Transient Mark mode.\n\ |
| 723 | When the option is non-nil, deactivation of the mark\n\ |
| 724 | turns off region highlighting, but commands that use the mark\n\ |
| 725 | behave as if the mark were still active."); |
| 726 | Vmark_even_if_inactive = Qnil; |
| 727 | |
| 728 | DEFVAR_LISP ("mouse-leave-buffer-hook", &Vmouse_leave_buffer_hook, |
| 729 | "Hook to run when about to switch windows with a mouse command.\n\ |
| 730 | Its purpose is to give temporary modes such as Isearch mode\n\ |
| 731 | a way to turn themselves off when a mouse command switches windows."); |
| 732 | Vmouse_leave_buffer_hook = Qnil; |
| 733 | |
| 734 | defsubr (&Sinteractive); |
| 735 | defsubr (&Scall_interactively); |
| 736 | defsubr (&Sprefix_numeric_value); |
| 737 | } |