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db9f0278 | 1 | /* Evaluator for GNU Emacs Lisp interpreter. |
96277b2d | 2 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995 Free Software Foundation, Inc. |
db9f0278 JB |
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 | |
96277b2d | 8 | the Free Software Foundation; either version 2, or (at your option) |
db9f0278 JB |
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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
db9f0278 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
dfcf069d AS |
23 | |
24 | #ifdef STDC_HEADERS | |
25 | #include <stdlib.h> | |
26 | #endif | |
27 | ||
db9f0278 | 28 | #include "lisp.h" |
9ac0d9e0 | 29 | #include "blockinput.h" |
db9f0278 JB |
30 | |
31 | #ifndef standalone | |
32 | #include "commands.h" | |
1f98fa48 | 33 | #include "keyboard.h" |
db9f0278 JB |
34 | #else |
35 | #define INTERACTIVE 1 | |
36 | #endif | |
37 | ||
38 | #include <setjmp.h> | |
39 | ||
40 | /* This definition is duplicated in alloc.c and keyboard.c */ | |
41 | /* Putting it in lisp.h makes cc bomb out! */ | |
42 | ||
43 | struct backtrace | |
44 | { | |
45 | struct backtrace *next; | |
46 | Lisp_Object *function; | |
47 | Lisp_Object *args; /* Points to vector of args. */ | |
daa37602 JB |
48 | int nargs; /* Length of vector. |
49 | If nargs is UNEVALLED, args points to slot holding | |
50 | list of unevalled args */ | |
db9f0278 JB |
51 | char evalargs; |
52 | /* Nonzero means call value of debugger when done with this operation. */ | |
53 | char debug_on_exit; | |
54 | }; | |
55 | ||
56 | struct backtrace *backtrace_list; | |
57 | ||
82da7701 JB |
58 | /* This structure helps implement the `catch' and `throw' control |
59 | structure. A struct catchtag contains all the information needed | |
60 | to restore the state of the interpreter after a non-local jump. | |
61 | ||
62 | Handlers for error conditions (represented by `struct handler' | |
63 | structures) just point to a catch tag to do the cleanup required | |
64 | for their jumps. | |
65 | ||
66 | catchtag structures are chained together in the C calling stack; | |
67 | the `next' member points to the next outer catchtag. | |
68 | ||
69 | A call like (throw TAG VAL) searches for a catchtag whose `tag' | |
70 | member is TAG, and then unbinds to it. The `val' member is used to | |
71 | hold VAL while the stack is unwound; `val' is returned as the value | |
72 | of the catch form. | |
73 | ||
74 | All the other members are concerned with restoring the interpreter | |
75 | state. */ | |
db9f0278 JB |
76 | struct catchtag |
77 | { | |
78 | Lisp_Object tag; | |
79 | Lisp_Object val; | |
80 | struct catchtag *next; | |
81 | struct gcpro *gcpro; | |
82 | jmp_buf jmp; | |
83 | struct backtrace *backlist; | |
84 | struct handler *handlerlist; | |
85 | int lisp_eval_depth; | |
86 | int pdlcount; | |
87 | int poll_suppress_count; | |
88 | }; | |
89 | ||
90 | struct catchtag *catchlist; | |
91 | ||
92 | Lisp_Object Qautoload, Qmacro, Qexit, Qinteractive, Qcommandp, Qdefun; | |
ad236261 | 93 | Lisp_Object Qinhibit_quit, Vinhibit_quit, Vquit_flag; |
db9f0278 JB |
94 | Lisp_Object Qmocklisp_arguments, Vmocklisp_arguments, Qmocklisp; |
95 | Lisp_Object Qand_rest, Qand_optional; | |
96 | Lisp_Object Qdebug_on_error; | |
97 | ||
6e6e9f08 RS |
98 | /* This holds either the symbol `run-hooks' or nil. |
99 | It is nil at an early stage of startup, and when Emacs | |
100 | is shutting down. */ | |
db9f0278 JB |
101 | Lisp_Object Vrun_hooks; |
102 | ||
103 | /* Non-nil means record all fset's and provide's, to be undone | |
104 | if the file being autoloaded is not fully loaded. | |
105 | They are recorded by being consed onto the front of Vautoload_queue: | |
106 | (FUN . ODEF) for a defun, (OFEATURES . nil) for a provide. */ | |
107 | ||
108 | Lisp_Object Vautoload_queue; | |
109 | ||
110 | /* Current number of specbindings allocated in specpdl. */ | |
111 | int specpdl_size; | |
112 | ||
113 | /* Pointer to beginning of specpdl. */ | |
114 | struct specbinding *specpdl; | |
115 | ||
116 | /* Pointer to first unused element in specpdl. */ | |
117 | struct specbinding *specpdl_ptr; | |
118 | ||
119 | /* Maximum size allowed for specpdl allocation */ | |
120 | int max_specpdl_size; | |
121 | ||
122 | /* Depth in Lisp evaluations and function calls. */ | |
123 | int lisp_eval_depth; | |
124 | ||
125 | /* Maximum allowed depth in Lisp evaluations and function calls. */ | |
126 | int max_lisp_eval_depth; | |
127 | ||
128 | /* Nonzero means enter debugger before next function call */ | |
129 | int debug_on_next_call; | |
130 | ||
128c0f66 | 131 | /* List of conditions (non-nil atom means all) which cause a backtrace |
4de86b16 | 132 | if an error is handled by the command loop's error handler. */ |
128c0f66 | 133 | Lisp_Object Vstack_trace_on_error; |
db9f0278 | 134 | |
128c0f66 | 135 | /* List of conditions (non-nil atom means all) which enter the debugger |
4de86b16 | 136 | if an error is handled by the command loop's error handler. */ |
128c0f66 | 137 | Lisp_Object Vdebug_on_error; |
db9f0278 | 138 | |
fc950e09 KH |
139 | /* List of conditions and regexps specifying error messages which |
140 | do not enter the debugger even if Vdebug_on_errors says they should. */ | |
141 | Lisp_Object Vdebug_ignored_errors; | |
142 | ||
61ede770 | 143 | /* Non-nil means call the debugger even if the error will be handled. */ |
57a6e758 | 144 | Lisp_Object Vdebug_on_signal; |
61ede770 RS |
145 | |
146 | /* Hook for edebug to use. */ | |
147 | Lisp_Object Vsignal_hook_function; | |
148 | ||
db9f0278 | 149 | /* Nonzero means enter debugger if a quit signal |
128c0f66 | 150 | is handled by the command loop's error handler. */ |
db9f0278 JB |
151 | int debug_on_quit; |
152 | ||
be857679 | 153 | /* The value of num_nonmacro_input_events as of the last time we |
82da7701 | 154 | started to enter the debugger. If we decide to enter the debugger |
be857679 | 155 | again when this is still equal to num_nonmacro_input_events, then we |
82da7701 JB |
156 | know that the debugger itself has an error, and we should just |
157 | signal the error instead of entering an infinite loop of debugger | |
158 | invocations. */ | |
159 | int when_entered_debugger; | |
db9f0278 JB |
160 | |
161 | Lisp_Object Vdebugger; | |
162 | ||
163 | void specbind (), record_unwind_protect (); | |
164 | ||
420e60e6 RS |
165 | Lisp_Object run_hook_with_args (); |
166 | ||
db9f0278 JB |
167 | Lisp_Object funcall_lambda (); |
168 | extern Lisp_Object ml_apply (); /* Apply a mocklisp function to unevaluated argument list */ | |
169 | ||
dfcf069d | 170 | void |
db9f0278 JB |
171 | init_eval_once () |
172 | { | |
173 | specpdl_size = 50; | |
716acfce | 174 | specpdl = (struct specbinding *) xmalloc (specpdl_size * sizeof (struct specbinding)); |
270e8074 | 175 | specpdl_ptr = specpdl; |
db9f0278 | 176 | max_specpdl_size = 600; |
969f5145 | 177 | max_lisp_eval_depth = 300; |
34d470ba RS |
178 | |
179 | Vrun_hooks = Qnil; | |
db9f0278 JB |
180 | } |
181 | ||
dfcf069d | 182 | void |
db9f0278 JB |
183 | init_eval () |
184 | { | |
185 | specpdl_ptr = specpdl; | |
186 | catchlist = 0; | |
187 | handlerlist = 0; | |
188 | backtrace_list = 0; | |
189 | Vquit_flag = Qnil; | |
190 | debug_on_next_call = 0; | |
191 | lisp_eval_depth = 0; | |
be857679 | 192 | /* This is less than the initial value of num_nonmacro_input_events. */ |
b5b911f9 | 193 | when_entered_debugger = -1; |
db9f0278 JB |
194 | } |
195 | ||
196 | Lisp_Object | |
197 | call_debugger (arg) | |
198 | Lisp_Object arg; | |
199 | { | |
200 | if (lisp_eval_depth + 20 > max_lisp_eval_depth) | |
201 | max_lisp_eval_depth = lisp_eval_depth + 20; | |
202 | if (specpdl_size + 40 > max_specpdl_size) | |
203 | max_specpdl_size = specpdl_size + 40; | |
204 | debug_on_next_call = 0; | |
be857679 | 205 | when_entered_debugger = num_nonmacro_input_events; |
db9f0278 JB |
206 | return apply1 (Vdebugger, arg); |
207 | } | |
208 | ||
dfcf069d | 209 | void |
db9f0278 JB |
210 | do_debug_on_call (code) |
211 | Lisp_Object code; | |
212 | { | |
213 | debug_on_next_call = 0; | |
214 | backtrace_list->debug_on_exit = 1; | |
215 | call_debugger (Fcons (code, Qnil)); | |
216 | } | |
217 | \f | |
218 | /* NOTE!!! Every function that can call EVAL must protect its args | |
219 | and temporaries from garbage collection while it needs them. | |
220 | The definition of `For' shows what you have to do. */ | |
221 | ||
222 | DEFUN ("or", For, Sor, 0, UNEVALLED, 0, | |
223 | "Eval args until one of them yields non-nil, then return that value.\n\ | |
224 | The remaining args are not evalled at all.\n\ | |
225 | If all args return nil, return nil.") | |
226 | (args) | |
227 | Lisp_Object args; | |
228 | { | |
229 | register Lisp_Object val; | |
230 | Lisp_Object args_left; | |
231 | struct gcpro gcpro1; | |
232 | ||
265a9e55 | 233 | if (NILP(args)) |
db9f0278 JB |
234 | return Qnil; |
235 | ||
236 | args_left = args; | |
237 | GCPRO1 (args_left); | |
238 | ||
239 | do | |
240 | { | |
241 | val = Feval (Fcar (args_left)); | |
265a9e55 | 242 | if (!NILP (val)) |
db9f0278 JB |
243 | break; |
244 | args_left = Fcdr (args_left); | |
245 | } | |
265a9e55 | 246 | while (!NILP(args_left)); |
db9f0278 JB |
247 | |
248 | UNGCPRO; | |
249 | return val; | |
250 | } | |
251 | ||
252 | DEFUN ("and", Fand, Sand, 0, UNEVALLED, 0, | |
253 | "Eval args until one of them yields nil, then return nil.\n\ | |
254 | The remaining args are not evalled at all.\n\ | |
255 | If no arg yields nil, return the last arg's value.") | |
256 | (args) | |
257 | Lisp_Object args; | |
258 | { | |
259 | register Lisp_Object val; | |
260 | Lisp_Object args_left; | |
261 | struct gcpro gcpro1; | |
262 | ||
265a9e55 | 263 | if (NILP(args)) |
db9f0278 JB |
264 | return Qt; |
265 | ||
266 | args_left = args; | |
267 | GCPRO1 (args_left); | |
268 | ||
269 | do | |
270 | { | |
271 | val = Feval (Fcar (args_left)); | |
265a9e55 | 272 | if (NILP (val)) |
db9f0278 JB |
273 | break; |
274 | args_left = Fcdr (args_left); | |
275 | } | |
265a9e55 | 276 | while (!NILP(args_left)); |
db9f0278 JB |
277 | |
278 | UNGCPRO; | |
279 | return val; | |
280 | } | |
281 | ||
282 | DEFUN ("if", Fif, Sif, 2, UNEVALLED, 0, | |
283 | "(if COND THEN ELSE...): if COND yields non-nil, do THEN, else do ELSE...\n\ | |
284 | Returns the value of THEN or the value of the last of the ELSE's.\n\ | |
285 | THEN must be one expression, but ELSE... can be zero or more expressions.\n\ | |
286 | If COND yields nil, and there are no ELSE's, the value is nil.") | |
287 | (args) | |
288 | Lisp_Object args; | |
289 | { | |
290 | register Lisp_Object cond; | |
291 | struct gcpro gcpro1; | |
292 | ||
293 | GCPRO1 (args); | |
294 | cond = Feval (Fcar (args)); | |
295 | UNGCPRO; | |
296 | ||
265a9e55 | 297 | if (!NILP (cond)) |
db9f0278 JB |
298 | return Feval (Fcar (Fcdr (args))); |
299 | return Fprogn (Fcdr (Fcdr (args))); | |
300 | } | |
301 | ||
302 | DEFUN ("cond", Fcond, Scond, 0, UNEVALLED, 0, | |
303 | "(cond CLAUSES...): try each clause until one succeeds.\n\ | |
304 | Each clause looks like (CONDITION BODY...). CONDITION is evaluated\n\ | |
305 | and, if the value is non-nil, this clause succeeds:\n\ | |
306 | then the expressions in BODY are evaluated and the last one's\n\ | |
307 | value is the value of the cond-form.\n\ | |
308 | If no clause succeeds, cond returns nil.\n\ | |
309 | If a clause has one element, as in (CONDITION),\n\ | |
310 | CONDITION's value if non-nil is returned from the cond-form.") | |
311 | (args) | |
312 | Lisp_Object args; | |
313 | { | |
314 | register Lisp_Object clause, val; | |
315 | struct gcpro gcpro1; | |
316 | ||
317 | val = Qnil; | |
318 | GCPRO1 (args); | |
265a9e55 | 319 | while (!NILP (args)) |
db9f0278 JB |
320 | { |
321 | clause = Fcar (args); | |
322 | val = Feval (Fcar (clause)); | |
265a9e55 | 323 | if (!NILP (val)) |
db9f0278 JB |
324 | { |
325 | if (!EQ (XCONS (clause)->cdr, Qnil)) | |
326 | val = Fprogn (XCONS (clause)->cdr); | |
327 | break; | |
328 | } | |
329 | args = XCONS (args)->cdr; | |
330 | } | |
331 | UNGCPRO; | |
332 | ||
333 | return val; | |
334 | } | |
335 | ||
336 | DEFUN ("progn", Fprogn, Sprogn, 0, UNEVALLED, 0, | |
337 | "(progn BODY...): eval BODY forms sequentially and return value of last one.") | |
338 | (args) | |
339 | Lisp_Object args; | |
340 | { | |
341 | register Lisp_Object val, tem; | |
342 | Lisp_Object args_left; | |
343 | struct gcpro gcpro1; | |
344 | ||
345 | /* In Mocklisp code, symbols at the front of the progn arglist | |
346 | are to be bound to zero. */ | |
347 | if (!EQ (Vmocklisp_arguments, Qt)) | |
348 | { | |
349 | val = make_number (0); | |
90165123 | 350 | while (!NILP (args) && (tem = Fcar (args), SYMBOLP (tem))) |
db9f0278 JB |
351 | { |
352 | QUIT; | |
353 | specbind (tem, val), args = Fcdr (args); | |
354 | } | |
355 | } | |
356 | ||
265a9e55 | 357 | if (NILP(args)) |
db9f0278 JB |
358 | return Qnil; |
359 | ||
360 | args_left = args; | |
361 | GCPRO1 (args_left); | |
362 | ||
363 | do | |
364 | { | |
365 | val = Feval (Fcar (args_left)); | |
366 | args_left = Fcdr (args_left); | |
367 | } | |
265a9e55 | 368 | while (!NILP(args_left)); |
db9f0278 JB |
369 | |
370 | UNGCPRO; | |
371 | return val; | |
372 | } | |
373 | ||
374 | DEFUN ("prog1", Fprog1, Sprog1, 1, UNEVALLED, 0, | |
375 | "(prog1 FIRST BODY...): eval FIRST and BODY sequentially; value from FIRST.\n\ | |
376 | The value of FIRST is saved during the evaluation of the remaining args,\n\ | |
377 | whose values are discarded.") | |
378 | (args) | |
379 | Lisp_Object args; | |
380 | { | |
381 | Lisp_Object val; | |
382 | register Lisp_Object args_left; | |
383 | struct gcpro gcpro1, gcpro2; | |
384 | register int argnum = 0; | |
385 | ||
265a9e55 | 386 | if (NILP(args)) |
db9f0278 JB |
387 | return Qnil; |
388 | ||
389 | args_left = args; | |
390 | val = Qnil; | |
391 | GCPRO2 (args, val); | |
392 | ||
393 | do | |
394 | { | |
395 | if (!(argnum++)) | |
396 | val = Feval (Fcar (args_left)); | |
397 | else | |
398 | Feval (Fcar (args_left)); | |
399 | args_left = Fcdr (args_left); | |
400 | } | |
265a9e55 | 401 | while (!NILP(args_left)); |
db9f0278 JB |
402 | |
403 | UNGCPRO; | |
404 | return val; | |
405 | } | |
406 | ||
407 | DEFUN ("prog2", Fprog2, Sprog2, 2, UNEVALLED, 0, | |
877b578f | 408 | "(prog2 X Y BODY...): eval X, Y and BODY sequentially; value from Y.\n\ |
db9f0278 JB |
409 | The value of Y is saved during the evaluation of the remaining args,\n\ |
410 | whose values are discarded.") | |
411 | (args) | |
412 | Lisp_Object args; | |
413 | { | |
414 | Lisp_Object val; | |
415 | register Lisp_Object args_left; | |
416 | struct gcpro gcpro1, gcpro2; | |
417 | register int argnum = -1; | |
418 | ||
419 | val = Qnil; | |
420 | ||
87d238ba | 421 | if (NILP (args)) |
db9f0278 JB |
422 | return Qnil; |
423 | ||
424 | args_left = args; | |
425 | val = Qnil; | |
426 | GCPRO2 (args, val); | |
427 | ||
428 | do | |
429 | { | |
430 | if (!(argnum++)) | |
431 | val = Feval (Fcar (args_left)); | |
432 | else | |
433 | Feval (Fcar (args_left)); | |
434 | args_left = Fcdr (args_left); | |
435 | } | |
87d238ba | 436 | while (!NILP (args_left)); |
db9f0278 JB |
437 | |
438 | UNGCPRO; | |
439 | return val; | |
440 | } | |
441 | ||
442 | DEFUN ("setq", Fsetq, Ssetq, 0, UNEVALLED, 0, | |
443 | "(setq SYM VAL SYM VAL ...): set each SYM to the value of its VAL.\n\ | |
b0d75191 RS |
444 | The symbols SYM are variables; they are literal (not evaluated).\n\ |
445 | The values VAL are expressions; they are evaluated.\n\ | |
446 | Thus, (setq x (1+ y)) sets `x' to the value of `(1+ y)'.\n\ | |
447 | The second VAL is not computed until after the first SYM is set, and so on;\n\ | |
448 | each VAL can use the new value of variables set earlier in the `setq'.\n\ | |
196e7d3f | 449 | The return value of the `setq' form is the value of the last VAL.") |
db9f0278 JB |
450 | (args) |
451 | Lisp_Object args; | |
452 | { | |
453 | register Lisp_Object args_left; | |
454 | register Lisp_Object val, sym; | |
455 | struct gcpro gcpro1; | |
456 | ||
265a9e55 | 457 | if (NILP(args)) |
db9f0278 JB |
458 | return Qnil; |
459 | ||
460 | args_left = args; | |
461 | GCPRO1 (args); | |
462 | ||
463 | do | |
464 | { | |
465 | val = Feval (Fcar (Fcdr (args_left))); | |
466 | sym = Fcar (args_left); | |
467 | Fset (sym, val); | |
468 | args_left = Fcdr (Fcdr (args_left)); | |
469 | } | |
265a9e55 | 470 | while (!NILP(args_left)); |
db9f0278 JB |
471 | |
472 | UNGCPRO; | |
473 | return val; | |
474 | } | |
475 | ||
476 | DEFUN ("quote", Fquote, Squote, 1, UNEVALLED, 0, | |
477 | "Return the argument, without evaluating it. `(quote x)' yields `x'.") | |
478 | (args) | |
479 | Lisp_Object args; | |
480 | { | |
481 | return Fcar (args); | |
482 | } | |
483 | ||
484 | DEFUN ("function", Ffunction, Sfunction, 1, UNEVALLED, 0, | |
485 | "Like `quote', but preferred for objects which are functions.\n\ | |
486 | In byte compilation, `function' causes its argument to be compiled.\n\ | |
487 | `quote' cannot do that.") | |
488 | (args) | |
489 | Lisp_Object args; | |
490 | { | |
491 | return Fcar (args); | |
492 | } | |
493 | ||
494 | DEFUN ("interactive-p", Finteractive_p, Sinteractive_p, 0, 0, 0, | |
495 | "Return t if function in which this appears was called interactively.\n\ | |
496 | This means that the function was called with call-interactively (which\n\ | |
497 | includes being called as the binding of a key)\n\ | |
498 | and input is currently coming from the keyboard (not in keyboard macro).") | |
499 | () | |
500 | { | |
501 | register struct backtrace *btp; | |
502 | register Lisp_Object fun; | |
503 | ||
504 | if (!INTERACTIVE) | |
505 | return Qnil; | |
506 | ||
db9f0278 | 507 | btp = backtrace_list; |
daa37602 JB |
508 | |
509 | /* If this isn't a byte-compiled function, there may be a frame at | |
510 | the top for Finteractive_p itself. If so, skip it. */ | |
511 | fun = Findirect_function (*btp->function); | |
0598f773 | 512 | if (SUBRP (fun) && XSUBR (fun) == &Sinteractive_p) |
db9f0278 | 513 | btp = btp->next; |
daa37602 JB |
514 | |
515 | /* If we're running an Emacs 18-style byte-compiled function, there | |
516 | may be a frame for Fbytecode. Now, given the strictest | |
517 | definition, this function isn't really being called | |
518 | interactively, but because that's the way Emacs 18 always builds | |
519 | byte-compiled functions, we'll accept it for now. */ | |
520 | if (EQ (*btp->function, Qbytecode)) | |
521 | btp = btp->next; | |
522 | ||
523 | /* If this isn't a byte-compiled function, then we may now be | |
524 | looking at several frames for special forms. Skip past them. */ | |
525 | while (btp && | |
526 | btp->nargs == UNEVALLED) | |
a6e3fa71 JB |
527 | btp = btp->next; |
528 | ||
daa37602 JB |
529 | /* btp now points at the frame of the innermost function that isn't |
530 | a special form, ignoring frames for Finteractive_p and/or | |
531 | Fbytecode at the top. If this frame is for a built-in function | |
532 | (such as load or eval-region) return nil. */ | |
ffd56f97 | 533 | fun = Findirect_function (*btp->function); |
90165123 | 534 | if (SUBRP (fun)) |
db9f0278 JB |
535 | return Qnil; |
536 | /* btp points to the frame of a Lisp function that called interactive-p. | |
537 | Return t if that function was called interactively. */ | |
538 | if (btp && btp->next && EQ (*btp->next->function, Qcall_interactively)) | |
539 | return Qt; | |
540 | return Qnil; | |
541 | } | |
542 | ||
543 | DEFUN ("defun", Fdefun, Sdefun, 2, UNEVALLED, 0, | |
544 | "(defun NAME ARGLIST [DOCSTRING] BODY...): define NAME as a function.\n\ | |
545 | The definition is (lambda ARGLIST [DOCSTRING] BODY...).\n\ | |
546 | See also the function `interactive'.") | |
547 | (args) | |
548 | Lisp_Object args; | |
549 | { | |
550 | register Lisp_Object fn_name; | |
551 | register Lisp_Object defn; | |
552 | ||
553 | fn_name = Fcar (args); | |
554 | defn = Fcons (Qlambda, Fcdr (args)); | |
265a9e55 | 555 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
556 | defn = Fpurecopy (defn); |
557 | Ffset (fn_name, defn); | |
2a49b6e5 | 558 | LOADHIST_ATTACH (fn_name); |
db9f0278 JB |
559 | return fn_name; |
560 | } | |
561 | ||
562 | DEFUN ("defmacro", Fdefmacro, Sdefmacro, 2, UNEVALLED, 0, | |
563 | "(defmacro NAME ARGLIST [DOCSTRING] BODY...): define NAME as a macro.\n\ | |
564 | The definition is (macro lambda ARGLIST [DOCSTRING] BODY...).\n\ | |
565 | When the macro is called, as in (NAME ARGS...),\n\ | |
566 | the function (lambda ARGLIST BODY...) is applied to\n\ | |
567 | the list ARGS... as it appears in the expression,\n\ | |
568 | and the result should be a form to be evaluated instead of the original.") | |
569 | (args) | |
570 | Lisp_Object args; | |
571 | { | |
572 | register Lisp_Object fn_name; | |
573 | register Lisp_Object defn; | |
574 | ||
575 | fn_name = Fcar (args); | |
576 | defn = Fcons (Qmacro, Fcons (Qlambda, Fcdr (args))); | |
265a9e55 | 577 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
578 | defn = Fpurecopy (defn); |
579 | Ffset (fn_name, defn); | |
2a49b6e5 | 580 | LOADHIST_ATTACH (fn_name); |
db9f0278 JB |
581 | return fn_name; |
582 | } | |
583 | ||
584 | DEFUN ("defvar", Fdefvar, Sdefvar, 1, UNEVALLED, 0, | |
585 | "(defvar SYMBOL INITVALUE DOCSTRING): define SYMBOL as a variable.\n\ | |
586 | You are not required to define a variable in order to use it,\n\ | |
587 | but the definition can supply documentation and an initial value\n\ | |
588 | in a way that tags can recognize.\n\n\ | |
589 | INITVALUE is evaluated, and used to set SYMBOL, only if SYMBOL's value is void.\n\ | |
06ef7355 RS |
590 | If SYMBOL is buffer-local, its default value is what is set;\n\ |
591 | buffer-local values are not affected.\n\ | |
db9f0278 JB |
592 | INITVALUE and DOCSTRING are optional.\n\ |
593 | If DOCSTRING starts with *, this variable is identified as a user option.\n\ | |
594 | This means that M-x set-variable and M-x edit-options recognize it.\n\ | |
595 | If INITVALUE is missing, SYMBOL's value is not set.") | |
596 | (args) | |
597 | Lisp_Object args; | |
598 | { | |
a42ba017 | 599 | register Lisp_Object sym, tem, tail; |
db9f0278 JB |
600 | |
601 | sym = Fcar (args); | |
a42ba017 RS |
602 | tail = Fcdr (args); |
603 | if (!NILP (Fcdr (Fcdr (tail)))) | |
604 | error ("too many arguments"); | |
605 | ||
606 | if (!NILP (tail)) | |
db9f0278 JB |
607 | { |
608 | tem = Fdefault_boundp (sym); | |
265a9e55 | 609 | if (NILP (tem)) |
db9f0278 JB |
610 | Fset_default (sym, Feval (Fcar (Fcdr (args)))); |
611 | } | |
a42ba017 RS |
612 | tail = Fcdr (Fcdr (args)); |
613 | if (!NILP (Fcar (tail))) | |
db9f0278 | 614 | { |
ca248607 | 615 | tem = Fcar (tail); |
265a9e55 | 616 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
617 | tem = Fpurecopy (tem); |
618 | Fput (sym, Qvariable_documentation, tem); | |
619 | } | |
2a49b6e5 | 620 | LOADHIST_ATTACH (sym); |
db9f0278 JB |
621 | return sym; |
622 | } | |
623 | ||
624 | DEFUN ("defconst", Fdefconst, Sdefconst, 2, UNEVALLED, 0, | |
625 | "(defconst SYMBOL INITVALUE DOCSTRING): define SYMBOL as a constant variable.\n\ | |
c569512a | 626 | The intent is that neither programs nor users should ever change this value.\n\ |
db9f0278 | 627 | Always sets the value of SYMBOL to the result of evalling INITVALUE.\n\ |
06ef7355 RS |
628 | If SYMBOL is buffer-local, its default value is what is set;\n\ |
629 | buffer-local values are not affected.\n\ | |
701b1ec2 | 630 | DOCSTRING is optional.") |
db9f0278 JB |
631 | (args) |
632 | Lisp_Object args; | |
633 | { | |
634 | register Lisp_Object sym, tem; | |
635 | ||
636 | sym = Fcar (args); | |
a42ba017 RS |
637 | if (!NILP (Fcdr (Fcdr (Fcdr (args))))) |
638 | error ("too many arguments"); | |
639 | ||
db9f0278 JB |
640 | Fset_default (sym, Feval (Fcar (Fcdr (args)))); |
641 | tem = Fcar (Fcdr (Fcdr (args))); | |
265a9e55 | 642 | if (!NILP (tem)) |
db9f0278 | 643 | { |
265a9e55 | 644 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
645 | tem = Fpurecopy (tem); |
646 | Fput (sym, Qvariable_documentation, tem); | |
647 | } | |
2a49b6e5 | 648 | LOADHIST_ATTACH (sym); |
db9f0278 JB |
649 | return sym; |
650 | } | |
651 | ||
652 | DEFUN ("user-variable-p", Fuser_variable_p, Suser_variable_p, 1, 1, 0, | |
653 | "Returns t if VARIABLE is intended to be set and modified by users.\n\ | |
654 | \(The alternative is a variable used internally in a Lisp program.)\n\ | |
655 | Determined by whether the first character of the documentation\n\ | |
65411977 | 656 | for the variable is `*'.") |
db9f0278 JB |
657 | (variable) |
658 | Lisp_Object variable; | |
659 | { | |
660 | Lisp_Object documentation; | |
661 | ||
5e78e475 RS |
662 | if (!SYMBOLP (variable)) |
663 | return Qnil; | |
664 | ||
db9f0278 | 665 | documentation = Fget (variable, Qvariable_documentation); |
90165123 | 666 | if (INTEGERP (documentation) && XINT (documentation) < 0) |
db9f0278 | 667 | return Qt; |
65411977 RS |
668 | if (STRINGP (documentation) |
669 | && ((unsigned char) XSTRING (documentation)->data[0] == '*')) | |
670 | return Qt; | |
671 | /* If it is (STRING . INTEGER), a negative integer means a user variable. */ | |
672 | if (CONSP (documentation) | |
673 | && STRINGP (XCONS (documentation)->car) | |
674 | && INTEGERP (XCONS (documentation)->cdr) | |
675 | && XINT (XCONS (documentation)->cdr) < 0) | |
db9f0278 JB |
676 | return Qt; |
677 | return Qnil; | |
678 | } | |
679 | \f | |
680 | DEFUN ("let*", FletX, SletX, 1, UNEVALLED, 0, | |
681 | "(let* VARLIST BODY...): bind variables according to VARLIST then eval BODY.\n\ | |
682 | The value of the last form in BODY is returned.\n\ | |
683 | Each element of VARLIST is a symbol (which is bound to nil)\n\ | |
684 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM).\n\ | |
685 | Each VALUEFORM can refer to the symbols already bound by this VARLIST.") | |
686 | (args) | |
687 | Lisp_Object args; | |
688 | { | |
689 | Lisp_Object varlist, val, elt; | |
690 | int count = specpdl_ptr - specpdl; | |
691 | struct gcpro gcpro1, gcpro2, gcpro3; | |
692 | ||
693 | GCPRO3 (args, elt, varlist); | |
694 | ||
695 | varlist = Fcar (args); | |
265a9e55 | 696 | while (!NILP (varlist)) |
db9f0278 JB |
697 | { |
698 | QUIT; | |
699 | elt = Fcar (varlist); | |
90165123 | 700 | if (SYMBOLP (elt)) |
db9f0278 | 701 | specbind (elt, Qnil); |
08564963 JB |
702 | else if (! NILP (Fcdr (Fcdr (elt)))) |
703 | Fsignal (Qerror, | |
704 | Fcons (build_string ("`let' bindings can have only one value-form"), | |
705 | elt)); | |
db9f0278 JB |
706 | else |
707 | { | |
708 | val = Feval (Fcar (Fcdr (elt))); | |
709 | specbind (Fcar (elt), val); | |
710 | } | |
711 | varlist = Fcdr (varlist); | |
712 | } | |
713 | UNGCPRO; | |
714 | val = Fprogn (Fcdr (args)); | |
715 | return unbind_to (count, val); | |
716 | } | |
717 | ||
718 | DEFUN ("let", Flet, Slet, 1, UNEVALLED, 0, | |
719 | "(let VARLIST BODY...): bind variables according to VARLIST then eval BODY.\n\ | |
720 | The value of the last form in BODY is returned.\n\ | |
721 | Each element of VARLIST is a symbol (which is bound to nil)\n\ | |
722 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM).\n\ | |
723 | All the VALUEFORMs are evalled before any symbols are bound.") | |
724 | (args) | |
725 | Lisp_Object args; | |
726 | { | |
727 | Lisp_Object *temps, tem; | |
728 | register Lisp_Object elt, varlist; | |
729 | int count = specpdl_ptr - specpdl; | |
730 | register int argnum; | |
731 | struct gcpro gcpro1, gcpro2; | |
732 | ||
733 | varlist = Fcar (args); | |
734 | ||
735 | /* Make space to hold the values to give the bound variables */ | |
736 | elt = Flength (varlist); | |
737 | temps = (Lisp_Object *) alloca (XFASTINT (elt) * sizeof (Lisp_Object)); | |
738 | ||
739 | /* Compute the values and store them in `temps' */ | |
740 | ||
741 | GCPRO2 (args, *temps); | |
742 | gcpro2.nvars = 0; | |
743 | ||
265a9e55 | 744 | for (argnum = 0; !NILP (varlist); varlist = Fcdr (varlist)) |
db9f0278 JB |
745 | { |
746 | QUIT; | |
747 | elt = Fcar (varlist); | |
90165123 | 748 | if (SYMBOLP (elt)) |
db9f0278 | 749 | temps [argnum++] = Qnil; |
08564963 JB |
750 | else if (! NILP (Fcdr (Fcdr (elt)))) |
751 | Fsignal (Qerror, | |
752 | Fcons (build_string ("`let' bindings can have only one value-form"), | |
753 | elt)); | |
db9f0278 JB |
754 | else |
755 | temps [argnum++] = Feval (Fcar (Fcdr (elt))); | |
756 | gcpro2.nvars = argnum; | |
757 | } | |
758 | UNGCPRO; | |
759 | ||
760 | varlist = Fcar (args); | |
265a9e55 | 761 | for (argnum = 0; !NILP (varlist); varlist = Fcdr (varlist)) |
db9f0278 JB |
762 | { |
763 | elt = Fcar (varlist); | |
764 | tem = temps[argnum++]; | |
90165123 | 765 | if (SYMBOLP (elt)) |
db9f0278 JB |
766 | specbind (elt, tem); |
767 | else | |
768 | specbind (Fcar (elt), tem); | |
769 | } | |
770 | ||
771 | elt = Fprogn (Fcdr (args)); | |
772 | return unbind_to (count, elt); | |
773 | } | |
774 | ||
775 | DEFUN ("while", Fwhile, Swhile, 1, UNEVALLED, 0, | |
776 | "(while TEST BODY...): if TEST yields non-nil, eval BODY... and repeat.\n\ | |
777 | The order of execution is thus TEST, BODY, TEST, BODY and so on\n\ | |
778 | until TEST returns nil.") | |
779 | (args) | |
780 | Lisp_Object args; | |
781 | { | |
782 | Lisp_Object test, body, tem; | |
783 | struct gcpro gcpro1, gcpro2; | |
784 | ||
785 | GCPRO2 (test, body); | |
786 | ||
787 | test = Fcar (args); | |
788 | body = Fcdr (args); | |
e3c24a74 RS |
789 | while (tem = Feval (test), |
790 | (!EQ (Vmocklisp_arguments, Qt) ? XINT (tem) : !NILP (tem))) | |
db9f0278 JB |
791 | { |
792 | QUIT; | |
793 | Fprogn (body); | |
794 | } | |
795 | ||
796 | UNGCPRO; | |
797 | return Qnil; | |
798 | } | |
799 | ||
800 | DEFUN ("macroexpand", Fmacroexpand, Smacroexpand, 1, 2, 0, | |
801 | "Return result of expanding macros at top level of FORM.\n\ | |
802 | If FORM is not a macro call, it is returned unchanged.\n\ | |
803 | Otherwise, the macro is expanded and the expansion is considered\n\ | |
804 | in place of FORM. When a non-macro-call results, it is returned.\n\n\ | |
805 | The second optional arg ENVIRONMENT species an environment of macro\n\ | |
806 | definitions to shadow the loaded ones for use in file byte-compilation.") | |
79e8bfbf | 807 | (form, environment) |
2e267a2e | 808 | Lisp_Object form; |
79e8bfbf | 809 | Lisp_Object environment; |
db9f0278 | 810 | { |
23d6b5a6 | 811 | /* With cleanups from Hallvard Furuseth. */ |
db9f0278 JB |
812 | register Lisp_Object expander, sym, def, tem; |
813 | ||
814 | while (1) | |
815 | { | |
816 | /* Come back here each time we expand a macro call, | |
817 | in case it expands into another macro call. */ | |
90165123 | 818 | if (!CONSP (form)) |
db9f0278 | 819 | break; |
23d6b5a6 JB |
820 | /* Set SYM, give DEF and TEM right values in case SYM is not a symbol. */ |
821 | def = sym = XCONS (form)->car; | |
822 | tem = Qnil; | |
db9f0278 JB |
823 | /* Trace symbols aliases to other symbols |
824 | until we get a symbol that is not an alias. */ | |
90165123 | 825 | while (SYMBOLP (def)) |
db9f0278 JB |
826 | { |
827 | QUIT; | |
23d6b5a6 | 828 | sym = def; |
79e8bfbf | 829 | tem = Fassq (sym, environment); |
265a9e55 | 830 | if (NILP (tem)) |
db9f0278 JB |
831 | { |
832 | def = XSYMBOL (sym)->function; | |
23d6b5a6 JB |
833 | if (!EQ (def, Qunbound)) |
834 | continue; | |
db9f0278 | 835 | } |
23d6b5a6 | 836 | break; |
db9f0278 | 837 | } |
79e8bfbf | 838 | /* Right now TEM is the result from SYM in ENVIRONMENT, |
db9f0278 | 839 | and if TEM is nil then DEF is SYM's function definition. */ |
265a9e55 | 840 | if (NILP (tem)) |
db9f0278 | 841 | { |
79e8bfbf | 842 | /* SYM is not mentioned in ENVIRONMENT. |
db9f0278 | 843 | Look at its function definition. */ |
90165123 | 844 | if (EQ (def, Qunbound) || !CONSP (def)) |
db9f0278 JB |
845 | /* Not defined or definition not suitable */ |
846 | break; | |
847 | if (EQ (XCONS (def)->car, Qautoload)) | |
848 | { | |
849 | /* Autoloading function: will it be a macro when loaded? */ | |
ee9ee63c | 850 | tem = Fnth (make_number (4), def); |
47ccd8b6 | 851 | if (EQ (tem, Qt) || EQ (tem, Qmacro)) |
ee9ee63c JB |
852 | /* Yes, load it and try again. */ |
853 | { | |
ca20916b RS |
854 | struct gcpro gcpro1; |
855 | GCPRO1 (form); | |
ee9ee63c | 856 | do_autoload (def, sym); |
ca20916b | 857 | UNGCPRO; |
ee9ee63c JB |
858 | continue; |
859 | } | |
860 | else | |
db9f0278 | 861 | break; |
db9f0278 JB |
862 | } |
863 | else if (!EQ (XCONS (def)->car, Qmacro)) | |
864 | break; | |
865 | else expander = XCONS (def)->cdr; | |
866 | } | |
867 | else | |
868 | { | |
869 | expander = XCONS (tem)->cdr; | |
265a9e55 | 870 | if (NILP (expander)) |
db9f0278 JB |
871 | break; |
872 | } | |
db9f0278 JB |
873 | form = apply1 (expander, XCONS (form)->cdr); |
874 | } | |
875 | return form; | |
876 | } | |
877 | \f | |
878 | DEFUN ("catch", Fcatch, Scatch, 1, UNEVALLED, 0, | |
879 | "(catch TAG BODY...): eval BODY allowing nonlocal exits using `throw'.\n\ | |
4e306308 RS |
880 | TAG is evalled to get the tag to use; it must not be nil.\n\ |
881 | \n\ | |
882 | Then the BODY is executed.\n\ | |
db9f0278 JB |
883 | Within BODY, (throw TAG) with same tag exits BODY and exits this `catch'.\n\ |
884 | If no throw happens, `catch' returns the value of the last BODY form.\n\ | |
885 | If a throw happens, it specifies the value to return from `catch'.") | |
886 | (args) | |
887 | Lisp_Object args; | |
888 | { | |
889 | register Lisp_Object tag; | |
890 | struct gcpro gcpro1; | |
891 | ||
892 | GCPRO1 (args); | |
893 | tag = Feval (Fcar (args)); | |
894 | UNGCPRO; | |
895 | return internal_catch (tag, Fprogn, Fcdr (args)); | |
896 | } | |
897 | ||
898 | /* Set up a catch, then call C function FUNC on argument ARG. | |
899 | FUNC should return a Lisp_Object. | |
900 | This is how catches are done from within C code. */ | |
901 | ||
902 | Lisp_Object | |
903 | internal_catch (tag, func, arg) | |
904 | Lisp_Object tag; | |
905 | Lisp_Object (*func) (); | |
906 | Lisp_Object arg; | |
907 | { | |
908 | /* This structure is made part of the chain `catchlist'. */ | |
909 | struct catchtag c; | |
910 | ||
911 | /* Fill in the components of c, and put it on the list. */ | |
912 | c.next = catchlist; | |
913 | c.tag = tag; | |
914 | c.val = Qnil; | |
915 | c.backlist = backtrace_list; | |
916 | c.handlerlist = handlerlist; | |
917 | c.lisp_eval_depth = lisp_eval_depth; | |
918 | c.pdlcount = specpdl_ptr - specpdl; | |
919 | c.poll_suppress_count = poll_suppress_count; | |
920 | c.gcpro = gcprolist; | |
921 | catchlist = &c; | |
922 | ||
923 | /* Call FUNC. */ | |
924 | if (! _setjmp (c.jmp)) | |
925 | c.val = (*func) (arg); | |
926 | ||
927 | /* Throw works by a longjmp that comes right here. */ | |
928 | catchlist = c.next; | |
929 | return c.val; | |
930 | } | |
931 | ||
ba410f40 JB |
932 | /* Unwind the specbind, catch, and handler stacks back to CATCH, and |
933 | jump to that CATCH, returning VALUE as the value of that catch. | |
db9f0278 | 934 | |
ba410f40 JB |
935 | This is the guts Fthrow and Fsignal; they differ only in the way |
936 | they choose the catch tag to throw to. A catch tag for a | |
937 | condition-case form has a TAG of Qnil. | |
db9f0278 | 938 | |
ba410f40 JB |
939 | Before each catch is discarded, unbind all special bindings and |
940 | execute all unwind-protect clauses made above that catch. Unwind | |
941 | the handler stack as we go, so that the proper handlers are in | |
942 | effect for each unwind-protect clause we run. At the end, restore | |
943 | some static info saved in CATCH, and longjmp to the location | |
944 | specified in the | |
945 | ||
946 | This is used for correct unwinding in Fthrow and Fsignal. */ | |
db9f0278 JB |
947 | |
948 | static void | |
ba410f40 | 949 | unwind_to_catch (catch, value) |
db9f0278 | 950 | struct catchtag *catch; |
ba410f40 | 951 | Lisp_Object value; |
db9f0278 JB |
952 | { |
953 | register int last_time; | |
954 | ||
ba410f40 JB |
955 | /* Save the value in the tag. */ |
956 | catch->val = value; | |
957 | ||
82da7701 | 958 | /* Restore the polling-suppression count. */ |
1cdc3155 | 959 | set_poll_suppress_count (catch->poll_suppress_count); |
82da7701 | 960 | |
db9f0278 JB |
961 | do |
962 | { | |
963 | last_time = catchlist == catch; | |
82da7701 JB |
964 | |
965 | /* Unwind the specpdl stack, and then restore the proper set of | |
966 | handlers. */ | |
db9f0278 JB |
967 | unbind_to (catchlist->pdlcount, Qnil); |
968 | handlerlist = catchlist->handlerlist; | |
969 | catchlist = catchlist->next; | |
970 | } | |
971 | while (! last_time); | |
972 | ||
973 | gcprolist = catch->gcpro; | |
974 | backtrace_list = catch->backlist; | |
975 | lisp_eval_depth = catch->lisp_eval_depth; | |
ba410f40 JB |
976 | |
977 | _longjmp (catch->jmp, 1); | |
db9f0278 JB |
978 | } |
979 | ||
980 | DEFUN ("throw", Fthrow, Sthrow, 2, 2, 0, | |
981 | "(throw TAG VALUE): throw to the catch for TAG and return VALUE from it.\n\ | |
982 | Both TAG and VALUE are evalled.") | |
79e8bfbf EN |
983 | (tag, value) |
984 | register Lisp_Object tag, value; | |
db9f0278 JB |
985 | { |
986 | register struct catchtag *c; | |
987 | ||
988 | while (1) | |
989 | { | |
265a9e55 | 990 | if (!NILP (tag)) |
db9f0278 JB |
991 | for (c = catchlist; c; c = c->next) |
992 | { | |
993 | if (EQ (c->tag, tag)) | |
79e8bfbf | 994 | unwind_to_catch (c, value); |
db9f0278 | 995 | } |
79e8bfbf | 996 | tag = Fsignal (Qno_catch, Fcons (tag, Fcons (value, Qnil))); |
db9f0278 JB |
997 | } |
998 | } | |
999 | ||
1000 | ||
1001 | DEFUN ("unwind-protect", Funwind_protect, Sunwind_protect, 1, UNEVALLED, 0, | |
1002 | "Do BODYFORM, protecting with UNWINDFORMS.\n\ | |
1003 | Usage looks like (unwind-protect BODYFORM UNWINDFORMS...).\n\ | |
1004 | If BODYFORM completes normally, its value is returned\n\ | |
1005 | after executing the UNWINDFORMS.\n\ | |
1006 | If BODYFORM exits nonlocally, the UNWINDFORMS are executed anyway.") | |
1007 | (args) | |
1008 | Lisp_Object args; | |
1009 | { | |
1010 | Lisp_Object val; | |
1011 | int count = specpdl_ptr - specpdl; | |
1012 | ||
1013 | record_unwind_protect (0, Fcdr (args)); | |
1014 | val = Feval (Fcar (args)); | |
1015 | return unbind_to (count, val); | |
1016 | } | |
1017 | \f | |
1018 | /* Chain of condition handlers currently in effect. | |
1019 | The elements of this chain are contained in the stack frames | |
1020 | of Fcondition_case and internal_condition_case. | |
1021 | When an error is signaled (by calling Fsignal, below), | |
1022 | this chain is searched for an element that applies. */ | |
1023 | ||
1024 | struct handler *handlerlist; | |
1025 | ||
1026 | DEFUN ("condition-case", Fcondition_case, Scondition_case, 2, UNEVALLED, 0, | |
1027 | "Regain control when an error is signaled.\n\ | |
1028 | Usage looks like (condition-case VAR BODYFORM HANDLERS...).\n\ | |
1029 | executes BODYFORM and returns its value if no error happens.\n\ | |
1030 | Each element of HANDLERS looks like (CONDITION-NAME BODY...)\n\ | |
1031 | where the BODY is made of Lisp expressions.\n\n\ | |
1032 | A handler is applicable to an error\n\ | |
1033 | if CONDITION-NAME is one of the error's condition names.\n\ | |
1034 | If an error happens, the first applicable handler is run.\n\ | |
1035 | \n\ | |
633357d4 RS |
1036 | The car of a handler may be a list of condition names\n\ |
1037 | instead of a single condition name.\n\ | |
1038 | \n\ | |
db9f0278 JB |
1039 | When a handler handles an error,\n\ |
1040 | control returns to the condition-case and the handler BODY... is executed\n\ | |
1041 | with VAR bound to (SIGNALED-CONDITIONS . SIGNAL-DATA).\n\ | |
1042 | VAR may be nil; then you do not get access to the signal information.\n\ | |
1043 | \n\ | |
1044 | The value of the last BODY form is returned from the condition-case.\n\ | |
1045 | See also the function `signal' for more info.") | |
1046 | (args) | |
1047 | Lisp_Object args; | |
1048 | { | |
1049 | Lisp_Object val; | |
1050 | struct catchtag c; | |
1051 | struct handler h; | |
82da7701 | 1052 | register Lisp_Object var, bodyform, handlers; |
db9f0278 | 1053 | |
82da7701 JB |
1054 | var = Fcar (args); |
1055 | bodyform = Fcar (Fcdr (args)); | |
1056 | handlers = Fcdr (Fcdr (args)); | |
1057 | CHECK_SYMBOL (var, 0); | |
1058 | ||
1059 | for (val = handlers; ! NILP (val); val = Fcdr (val)) | |
1060 | { | |
1061 | Lisp_Object tem; | |
1062 | tem = Fcar (val); | |
5f96776a RS |
1063 | if (! (NILP (tem) |
1064 | || (CONSP (tem) | |
1065 | && (SYMBOLP (XCONS (tem)->car) | |
1066 | || CONSP (XCONS (tem)->car))))) | |
82da7701 JB |
1067 | error ("Invalid condition handler", tem); |
1068 | } | |
db9f0278 JB |
1069 | |
1070 | c.tag = Qnil; | |
1071 | c.val = Qnil; | |
1072 | c.backlist = backtrace_list; | |
1073 | c.handlerlist = handlerlist; | |
1074 | c.lisp_eval_depth = lisp_eval_depth; | |
1075 | c.pdlcount = specpdl_ptr - specpdl; | |
1076 | c.poll_suppress_count = poll_suppress_count; | |
1077 | c.gcpro = gcprolist; | |
1078 | if (_setjmp (c.jmp)) | |
1079 | { | |
265a9e55 | 1080 | if (!NILP (h.var)) |
9d58218c RS |
1081 | specbind (h.var, c.val); |
1082 | val = Fprogn (Fcdr (h.chosen_clause)); | |
82da7701 JB |
1083 | |
1084 | /* Note that this just undoes the binding of h.var; whoever | |
1085 | longjumped to us unwound the stack to c.pdlcount before | |
1086 | throwing. */ | |
db9f0278 JB |
1087 | unbind_to (c.pdlcount, Qnil); |
1088 | return val; | |
1089 | } | |
1090 | c.next = catchlist; | |
1091 | catchlist = &c; | |
db9f0278 | 1092 | |
82da7701 JB |
1093 | h.var = var; |
1094 | h.handler = handlers; | |
db9f0278 | 1095 | h.next = handlerlist; |
db9f0278 JB |
1096 | h.tag = &c; |
1097 | handlerlist = &h; | |
1098 | ||
82da7701 | 1099 | val = Feval (bodyform); |
db9f0278 JB |
1100 | catchlist = c.next; |
1101 | handlerlist = h.next; | |
1102 | return val; | |
1103 | } | |
1104 | ||
f029ca5f RS |
1105 | /* Call the function BFUN with no arguments, catching errors within it |
1106 | according to HANDLERS. If there is an error, call HFUN with | |
1107 | one argument which is the data that describes the error: | |
1108 | (SIGNALNAME . DATA) | |
1109 | ||
1110 | HANDLERS can be a list of conditions to catch. | |
1111 | If HANDLERS is Qt, catch all errors. | |
1112 | If HANDLERS is Qerror, catch all errors | |
1113 | but allow the debugger to run if that is enabled. */ | |
1114 | ||
db9f0278 JB |
1115 | Lisp_Object |
1116 | internal_condition_case (bfun, handlers, hfun) | |
1117 | Lisp_Object (*bfun) (); | |
1118 | Lisp_Object handlers; | |
1119 | Lisp_Object (*hfun) (); | |
1120 | { | |
1121 | Lisp_Object val; | |
1122 | struct catchtag c; | |
1123 | struct handler h; | |
1124 | ||
01591d17 RS |
1125 | /* Since Fsignal resets this to 0, it had better be 0 now |
1126 | or else we have a potential bug. */ | |
1127 | if (interrupt_input_blocked != 0) | |
1128 | abort (); | |
1129 | ||
db9f0278 JB |
1130 | c.tag = Qnil; |
1131 | c.val = Qnil; | |
1132 | c.backlist = backtrace_list; | |
1133 | c.handlerlist = handlerlist; | |
1134 | c.lisp_eval_depth = lisp_eval_depth; | |
1135 | c.pdlcount = specpdl_ptr - specpdl; | |
1136 | c.poll_suppress_count = poll_suppress_count; | |
1137 | c.gcpro = gcprolist; | |
1138 | if (_setjmp (c.jmp)) | |
1139 | { | |
9d58218c | 1140 | return (*hfun) (c.val); |
db9f0278 JB |
1141 | } |
1142 | c.next = catchlist; | |
1143 | catchlist = &c; | |
1144 | h.handler = handlers; | |
1145 | h.var = Qnil; | |
db9f0278 JB |
1146 | h.next = handlerlist; |
1147 | h.tag = &c; | |
1148 | handlerlist = &h; | |
1149 | ||
1150 | val = (*bfun) (); | |
1151 | catchlist = c.next; | |
1152 | handlerlist = h.next; | |
1153 | return val; | |
1154 | } | |
1155 | ||
f029ca5f RS |
1156 | /* Like internal_condition_case but call HFUN with ARG as its argument. */ |
1157 | ||
d227775c RS |
1158 | Lisp_Object |
1159 | internal_condition_case_1 (bfun, arg, handlers, hfun) | |
1160 | Lisp_Object (*bfun) (); | |
1161 | Lisp_Object arg; | |
1162 | Lisp_Object handlers; | |
1163 | Lisp_Object (*hfun) (); | |
1164 | { | |
1165 | Lisp_Object val; | |
1166 | struct catchtag c; | |
1167 | struct handler h; | |
1168 | ||
1169 | c.tag = Qnil; | |
1170 | c.val = Qnil; | |
1171 | c.backlist = backtrace_list; | |
1172 | c.handlerlist = handlerlist; | |
1173 | c.lisp_eval_depth = lisp_eval_depth; | |
1174 | c.pdlcount = specpdl_ptr - specpdl; | |
1175 | c.poll_suppress_count = poll_suppress_count; | |
1176 | c.gcpro = gcprolist; | |
1177 | if (_setjmp (c.jmp)) | |
1178 | { | |
9d58218c | 1179 | return (*hfun) (c.val); |
d227775c RS |
1180 | } |
1181 | c.next = catchlist; | |
1182 | catchlist = &c; | |
1183 | h.handler = handlers; | |
1184 | h.var = Qnil; | |
1185 | h.next = handlerlist; | |
1186 | h.tag = &c; | |
1187 | handlerlist = &h; | |
1188 | ||
1189 | val = (*bfun) (arg); | |
1190 | catchlist = c.next; | |
1191 | handlerlist = h.next; | |
1192 | return val; | |
1193 | } | |
1194 | \f | |
db9f0278 JB |
1195 | static Lisp_Object find_handler_clause (); |
1196 | ||
1197 | DEFUN ("signal", Fsignal, Ssignal, 2, 2, 0, | |
4200e719 | 1198 | "Signal an error. Args are ERROR-SYMBOL and associated DATA.\n\ |
db9f0278 | 1199 | This function does not return.\n\n\ |
4200e719 | 1200 | An error symbol is a symbol with an `error-conditions' property\n\ |
db9f0278 JB |
1201 | that is a list of condition names.\n\ |
1202 | A handler for any of those names will get to handle this signal.\n\ | |
1203 | The symbol `error' should normally be one of them.\n\ | |
1204 | \n\ | |
1205 | DATA should be a list. Its elements are printed as part of the error message.\n\ | |
1206 | If the signal is handled, DATA is made available to the handler.\n\ | |
1207 | See also the function `condition-case'.") | |
4200e719 RS |
1208 | (error_symbol, data) |
1209 | Lisp_Object error_symbol, data; | |
db9f0278 | 1210 | { |
bfa8ca43 AS |
1211 | /* When memory is full, ERROR-SYMBOL is nil, |
1212 | and DATA is (REAL-ERROR-SYMBOL . REAL-DATA). */ | |
db9f0278 JB |
1213 | register struct handler *allhandlers = handlerlist; |
1214 | Lisp_Object conditions; | |
1215 | extern int gc_in_progress; | |
1216 | extern int waiting_for_input; | |
1217 | Lisp_Object debugger_value; | |
c11d3d17 | 1218 | Lisp_Object string; |
1ea9dec4 RS |
1219 | Lisp_Object real_error_symbol; |
1220 | Lisp_Object combined_data; | |
db9f0278 JB |
1221 | |
1222 | quit_error_check (); | |
1223 | immediate_quit = 0; | |
1224 | if (gc_in_progress || waiting_for_input) | |
1225 | abort (); | |
1226 | ||
1227 | TOTALLY_UNBLOCK_INPUT; | |
1228 | ||
1ea9dec4 RS |
1229 | if (NILP (error_symbol)) |
1230 | real_error_symbol = Fcar (data); | |
1231 | else | |
1232 | real_error_symbol = error_symbol; | |
1233 | ||
61ede770 RS |
1234 | /* This hook is used by edebug. */ |
1235 | if (! NILP (Vsignal_hook_function)) | |
f01a9c5b | 1236 | call2 (Vsignal_hook_function, error_symbol, data); |
61ede770 | 1237 | |
1ea9dec4 | 1238 | conditions = Fget (real_error_symbol, Qerror_conditions); |
db9f0278 JB |
1239 | |
1240 | for (; handlerlist; handlerlist = handlerlist->next) | |
1241 | { | |
1242 | register Lisp_Object clause; | |
1243 | clause = find_handler_clause (handlerlist->handler, conditions, | |
4200e719 | 1244 | error_symbol, data, &debugger_value); |
db9f0278 JB |
1245 | |
1246 | #if 0 /* Most callers are not prepared to handle gc if this returns. | |
1247 | So, since this feature is not very useful, take it out. */ | |
1248 | /* If have called debugger and user wants to continue, | |
1249 | just return nil. */ | |
1250 | if (EQ (clause, Qlambda)) | |
1251 | return debugger_value; | |
1252 | #else | |
1253 | if (EQ (clause, Qlambda)) | |
82da7701 | 1254 | { |
690337b7 KH |
1255 | /* We can't return values to code which signaled an error, but we |
1256 | can continue code which has signaled a quit. */ | |
1ea9dec4 | 1257 | if (EQ (real_error_symbol, Qquit)) |
82da7701 JB |
1258 | return Qnil; |
1259 | else | |
d3e6f8be | 1260 | error ("Cannot return from the debugger in an error"); |
82da7701 | 1261 | } |
db9f0278 JB |
1262 | #endif |
1263 | ||
265a9e55 | 1264 | if (!NILP (clause)) |
db9f0278 | 1265 | { |
9d58218c | 1266 | Lisp_Object unwind_data; |
db9f0278 | 1267 | struct handler *h = handlerlist; |
9d58218c | 1268 | |
db9f0278 | 1269 | handlerlist = allhandlers; |
1ea9dec4 RS |
1270 | |
1271 | if (NILP (error_symbol)) | |
1272 | unwind_data = data; | |
9d58218c RS |
1273 | else |
1274 | unwind_data = Fcons (error_symbol, data); | |
1275 | h->chosen_clause = clause; | |
1276 | unwind_to_catch (h->tag, unwind_data); | |
db9f0278 JB |
1277 | } |
1278 | } | |
1279 | ||
1280 | handlerlist = allhandlers; | |
1281 | /* If no handler is present now, try to run the debugger, | |
1282 | and if that fails, throw to top level. */ | |
4200e719 | 1283 | find_handler_clause (Qerror, conditions, error_symbol, data, &debugger_value); |
c11d3d17 RS |
1284 | if (catchlist != 0) |
1285 | Fthrow (Qtop_level, Qt); | |
1286 | ||
1ea9dec4 | 1287 | if (! NILP (error_symbol)) |
c11d3d17 RS |
1288 | data = Fcons (error_symbol, data); |
1289 | ||
1290 | string = Ferror_message_string (data); | |
377127ce | 1291 | fatal ("%s", XSTRING (string)->data, 0); |
db9f0278 JB |
1292 | } |
1293 | ||
128c0f66 RM |
1294 | /* Return nonzero iff LIST is a non-nil atom or |
1295 | a list containing one of CONDITIONS. */ | |
1296 | ||
1297 | static int | |
1298 | wants_debugger (list, conditions) | |
1299 | Lisp_Object list, conditions; | |
1300 | { | |
4de86b16 | 1301 | if (NILP (list)) |
128c0f66 RM |
1302 | return 0; |
1303 | if (! CONSP (list)) | |
1304 | return 1; | |
1305 | ||
ab67260b | 1306 | while (CONSP (conditions)) |
128c0f66 | 1307 | { |
ab67260b RS |
1308 | Lisp_Object this, tail; |
1309 | this = XCONS (conditions)->car; | |
1310 | for (tail = list; CONSP (tail); tail = XCONS (tail)->cdr) | |
1311 | if (EQ (XCONS (tail)->car, this)) | |
128c0f66 | 1312 | return 1; |
128c0f66 RM |
1313 | conditions = XCONS (conditions)->cdr; |
1314 | } | |
ab67260b | 1315 | return 0; |
128c0f66 RM |
1316 | } |
1317 | ||
fc950e09 KH |
1318 | /* Return 1 if an error with condition-symbols CONDITIONS, |
1319 | and described by SIGNAL-DATA, should skip the debugger | |
1320 | according to debugger-ignore-errors. */ | |
1321 | ||
1322 | static int | |
1323 | skip_debugger (conditions, data) | |
1324 | Lisp_Object conditions, data; | |
1325 | { | |
1326 | Lisp_Object tail; | |
1327 | int first_string = 1; | |
1328 | Lisp_Object error_message; | |
1329 | ||
1330 | for (tail = Vdebug_ignored_errors; CONSP (tail); | |
1331 | tail = XCONS (tail)->cdr) | |
1332 | { | |
1333 | if (STRINGP (XCONS (tail)->car)) | |
1334 | { | |
1335 | if (first_string) | |
1336 | { | |
1337 | error_message = Ferror_message_string (data); | |
1338 | first_string = 0; | |
1339 | } | |
1340 | if (fast_string_match (XCONS (tail)->car, error_message) >= 0) | |
1341 | return 1; | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | Lisp_Object contail; | |
1346 | ||
1347 | for (contail = conditions; CONSP (contail); | |
1348 | contail = XCONS (contail)->cdr) | |
1349 | if (EQ (XCONS (tail)->car, XCONS (contail)->car)) | |
1350 | return 1; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | ||
128c0f66 | 1357 | /* Value of Qlambda means we have called debugger and user has continued. |
1ea9dec4 | 1358 | There are two ways to pass SIG and DATA: |
9b942ebd | 1359 | = SIG is the error symbol, and DATA is the rest of the data. |
1ea9dec4 | 1360 | = SIG is nil, and DATA is (SYMBOL . REST-OF-DATA). |
9b942ebd | 1361 | This is for memory-full errors only. |
1ea9dec4 | 1362 | |
128c0f66 | 1363 | Store value returned from debugger into *DEBUGGER_VALUE_PTR. */ |
db9f0278 JB |
1364 | |
1365 | static Lisp_Object | |
1366 | find_handler_clause (handlers, conditions, sig, data, debugger_value_ptr) | |
1367 | Lisp_Object handlers, conditions, sig, data; | |
1368 | Lisp_Object *debugger_value_ptr; | |
1369 | { | |
1370 | register Lisp_Object h; | |
1371 | register Lisp_Object tem; | |
db9f0278 JB |
1372 | |
1373 | if (EQ (handlers, Qt)) /* t is used by handlers for all conditions, set up by C code. */ | |
1374 | return Qt; | |
61ede770 RS |
1375 | /* error is used similarly, but means print an error message |
1376 | and run the debugger if that is enabled. */ | |
1377 | if (EQ (handlers, Qerror) | |
57a6e758 RS |
1378 | || !NILP (Vdebug_on_signal)) /* This says call debugger even if |
1379 | there is a handler. */ | |
db9f0278 | 1380 | { |
61ede770 RS |
1381 | int count = specpdl_ptr - specpdl; |
1382 | int debugger_called = 0; | |
1ea9dec4 | 1383 | Lisp_Object sig_symbol, combined_data; |
9b942ebd RS |
1384 | /* This is set to 1 if we are handling a memory-full error, |
1385 | because these must not run the debugger. | |
1386 | (There is no room in memory to do that!) */ | |
1387 | int no_debugger = 0; | |
1ea9dec4 RS |
1388 | |
1389 | if (NILP (sig)) | |
1390 | { | |
1391 | combined_data = data; | |
1392 | sig_symbol = Fcar (data); | |
9b942ebd | 1393 | no_debugger = 1; |
1ea9dec4 RS |
1394 | } |
1395 | else | |
1396 | { | |
1397 | combined_data = Fcons (sig, data); | |
1398 | sig_symbol = sig; | |
1399 | } | |
61ede770 | 1400 | |
128c0f66 | 1401 | if (wants_debugger (Vstack_trace_on_error, conditions)) |
88817f3b RS |
1402 | { |
1403 | #ifdef __STDC__ | |
1404 | internal_with_output_to_temp_buffer ("*Backtrace*", | |
1405 | (Lisp_Object (*) (Lisp_Object)) Fbacktrace, | |
1406 | Qnil); | |
1407 | #else | |
1408 | internal_with_output_to_temp_buffer ("*Backtrace*", | |
1409 | Fbacktrace, Qnil); | |
1410 | #endif | |
1411 | } | |
9b942ebd RS |
1412 | if (! no_debugger |
1413 | && (EQ (sig_symbol, Qquit) | |
1414 | ? debug_on_quit | |
1415 | : wants_debugger (Vdebug_on_error, conditions)) | |
1ea9dec4 | 1416 | && ! skip_debugger (conditions, combined_data) |
be857679 | 1417 | && when_entered_debugger < num_nonmacro_input_events) |
db9f0278 | 1418 | { |
db9f0278 | 1419 | specbind (Qdebug_on_error, Qnil); |
fc950e09 KH |
1420 | *debugger_value_ptr |
1421 | = call_debugger (Fcons (Qerror, | |
1ea9dec4 | 1422 | Fcons (combined_data, Qnil))); |
61ede770 RS |
1423 | debugger_called = 1; |
1424 | } | |
1425 | /* If there is no handler, return saying whether we ran the debugger. */ | |
1426 | if (EQ (handlers, Qerror)) | |
1427 | { | |
1428 | if (debugger_called) | |
1429 | return unbind_to (count, Qlambda); | |
1430 | return Qt; | |
db9f0278 | 1431 | } |
db9f0278 JB |
1432 | } |
1433 | for (h = handlers; CONSP (h); h = Fcdr (h)) | |
1434 | { | |
5f96776a RS |
1435 | Lisp_Object handler, condit; |
1436 | ||
1437 | handler = Fcar (h); | |
1438 | if (!CONSP (handler)) | |
db9f0278 | 1439 | continue; |
5f96776a RS |
1440 | condit = Fcar (handler); |
1441 | /* Handle a single condition name in handler HANDLER. */ | |
1442 | if (SYMBOLP (condit)) | |
1443 | { | |
1444 | tem = Fmemq (Fcar (handler), conditions); | |
1445 | if (!NILP (tem)) | |
1446 | return handler; | |
1447 | } | |
1448 | /* Handle a list of condition names in handler HANDLER. */ | |
1449 | else if (CONSP (condit)) | |
1450 | { | |
1451 | while (CONSP (condit)) | |
1452 | { | |
1453 | tem = Fmemq (Fcar (condit), conditions); | |
1454 | if (!NILP (tem)) | |
1455 | return handler; | |
1456 | condit = XCONS (condit)->cdr; | |
1457 | } | |
1458 | } | |
db9f0278 JB |
1459 | } |
1460 | return Qnil; | |
1461 | } | |
1462 | ||
1463 | /* dump an error message; called like printf */ | |
1464 | ||
1465 | /* VARARGS 1 */ | |
1466 | void | |
1467 | error (m, a1, a2, a3) | |
1468 | char *m; | |
9125da08 | 1469 | char *a1, *a2, *a3; |
db9f0278 JB |
1470 | { |
1471 | char buf[200]; | |
9125da08 RS |
1472 | int size = 200; |
1473 | int mlen; | |
1474 | char *buffer = buf; | |
1475 | char *args[3]; | |
1476 | int allocated = 0; | |
1477 | Lisp_Object string; | |
1478 | ||
1479 | args[0] = a1; | |
1480 | args[1] = a2; | |
1481 | args[2] = a3; | |
1482 | ||
1483 | mlen = strlen (m); | |
db9f0278 JB |
1484 | |
1485 | while (1) | |
9125da08 | 1486 | { |
955f3ff9 | 1487 | int used = doprnt (buffer, size, m, m + mlen, 3, args); |
9125da08 RS |
1488 | if (used < size) |
1489 | break; | |
1490 | size *= 2; | |
1491 | if (allocated) | |
1492 | buffer = (char *) xrealloc (buffer, size); | |
5ece1728 RS |
1493 | else |
1494 | { | |
1495 | buffer = (char *) xmalloc (size); | |
1496 | allocated = 1; | |
1497 | } | |
9125da08 RS |
1498 | } |
1499 | ||
955f3ff9 | 1500 | string = build_string (buffer); |
9125da08 RS |
1501 | if (allocated) |
1502 | free (buffer); | |
1503 | ||
1504 | Fsignal (Qerror, Fcons (string, Qnil)); | |
db9f0278 JB |
1505 | } |
1506 | \f | |
1507 | DEFUN ("commandp", Fcommandp, Scommandp, 1, 1, 0, | |
1508 | "T if FUNCTION makes provisions for interactive calling.\n\ | |
1509 | This means it contains a description for how to read arguments to give it.\n\ | |
1510 | The value is nil for an invalid function or a symbol with no function\n\ | |
1511 | definition.\n\ | |
1512 | \n\ | |
1513 | Interactively callable functions include strings and vectors (treated\n\ | |
1514 | as keyboard macros), lambda-expressions that contain a top-level call\n\ | |
1515 | to `interactive', autoload definitions made by `autoload' with non-nil\n\ | |
1516 | fourth argument, and some of the built-in functions of Lisp.\n\ | |
1517 | \n\ | |
1518 | Also, a symbol satisfies `commandp' if its function definition does so.") | |
1519 | (function) | |
1520 | Lisp_Object function; | |
1521 | { | |
1522 | register Lisp_Object fun; | |
1523 | register Lisp_Object funcar; | |
1524 | register Lisp_Object tem; | |
1525 | register int i = 0; | |
1526 | ||
1527 | fun = function; | |
1528 | ||
ffd56f97 JB |
1529 | fun = indirect_function (fun); |
1530 | if (EQ (fun, Qunbound)) | |
1531 | return Qnil; | |
db9f0278 JB |
1532 | |
1533 | /* Emacs primitives are interactive if their DEFUN specifies an | |
1534 | interactive spec. */ | |
90165123 | 1535 | if (SUBRP (fun)) |
db9f0278 JB |
1536 | { |
1537 | if (XSUBR (fun)->prompt) | |
1538 | return Qt; | |
1539 | else | |
1540 | return Qnil; | |
1541 | } | |
1542 | ||
1543 | /* Bytecode objects are interactive if they are long enough to | |
1544 | have an element whose index is COMPILED_INTERACTIVE, which is | |
1545 | where the interactive spec is stored. */ | |
90165123 | 1546 | else if (COMPILEDP (fun)) |
f9b4aacf | 1547 | return ((XVECTOR (fun)->size & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE |
db9f0278 JB |
1548 | ? Qt : Qnil); |
1549 | ||
1550 | /* Strings and vectors are keyboard macros. */ | |
90165123 | 1551 | if (STRINGP (fun) || VECTORP (fun)) |
db9f0278 JB |
1552 | return Qt; |
1553 | ||
1554 | /* Lists may represent commands. */ | |
1555 | if (!CONSP (fun)) | |
1556 | return Qnil; | |
1557 | funcar = Fcar (fun); | |
90165123 | 1558 | if (!SYMBOLP (funcar)) |
db9f0278 JB |
1559 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); |
1560 | if (EQ (funcar, Qlambda)) | |
1561 | return Fassq (Qinteractive, Fcdr (Fcdr (fun))); | |
1562 | if (EQ (funcar, Qmocklisp)) | |
1563 | return Qt; /* All mocklisp functions can be called interactively */ | |
1564 | if (EQ (funcar, Qautoload)) | |
1565 | return Fcar (Fcdr (Fcdr (Fcdr (fun)))); | |
1566 | else | |
1567 | return Qnil; | |
1568 | } | |
1569 | ||
1570 | /* ARGSUSED */ | |
1571 | DEFUN ("autoload", Fautoload, Sautoload, 2, 5, 0, | |
1572 | "Define FUNCTION to autoload from FILE.\n\ | |
1573 | FUNCTION is a symbol; FILE is a file name string to pass to `load'.\n\ | |
1574 | Third arg DOCSTRING is documentation for the function.\n\ | |
1575 | Fourth arg INTERACTIVE if non-nil says function can be called interactively.\n\ | |
ee9ee63c JB |
1576 | Fifth arg TYPE indicates the type of the object:\n\ |
1577 | nil or omitted says FUNCTION is a function,\n\ | |
1578 | `keymap' says FUNCTION is really a keymap, and\n\ | |
1579 | `macro' or t says FUNCTION is really a macro.\n\ | |
db9f0278 JB |
1580 | Third through fifth args give info about the real definition.\n\ |
1581 | They default to nil.\n\ | |
1582 | If FUNCTION is already defined other than as an autoload,\n\ | |
1583 | this does nothing and returns nil.") | |
ee9ee63c JB |
1584 | (function, file, docstring, interactive, type) |
1585 | Lisp_Object function, file, docstring, interactive, type; | |
db9f0278 JB |
1586 | { |
1587 | #ifdef NO_ARG_ARRAY | |
1588 | Lisp_Object args[4]; | |
1589 | #endif | |
1590 | ||
1591 | CHECK_SYMBOL (function, 0); | |
1592 | CHECK_STRING (file, 1); | |
1593 | ||
1594 | /* If function is defined and not as an autoload, don't override */ | |
1595 | if (!EQ (XSYMBOL (function)->function, Qunbound) | |
90165123 | 1596 | && !(CONSP (XSYMBOL (function)->function) |
db9f0278 JB |
1597 | && EQ (XCONS (XSYMBOL (function)->function)->car, Qautoload))) |
1598 | return Qnil; | |
1599 | ||
1600 | #ifdef NO_ARG_ARRAY | |
1601 | args[0] = file; | |
1602 | args[1] = docstring; | |
1603 | args[2] = interactive; | |
ee9ee63c | 1604 | args[3] = type; |
db9f0278 JB |
1605 | |
1606 | return Ffset (function, Fcons (Qautoload, Flist (4, &args[0]))); | |
1607 | #else /* NO_ARG_ARRAY */ | |
1608 | return Ffset (function, Fcons (Qautoload, Flist (4, &file))); | |
1609 | #endif /* not NO_ARG_ARRAY */ | |
1610 | } | |
1611 | ||
1612 | Lisp_Object | |
1613 | un_autoload (oldqueue) | |
1614 | Lisp_Object oldqueue; | |
1615 | { | |
1616 | register Lisp_Object queue, first, second; | |
1617 | ||
1618 | /* Queue to unwind is current value of Vautoload_queue. | |
1619 | oldqueue is the shadowed value to leave in Vautoload_queue. */ | |
1620 | queue = Vautoload_queue; | |
1621 | Vautoload_queue = oldqueue; | |
1622 | while (CONSP (queue)) | |
1623 | { | |
1624 | first = Fcar (queue); | |
1625 | second = Fcdr (first); | |
1626 | first = Fcar (first); | |
1627 | if (EQ (second, Qnil)) | |
1628 | Vfeatures = first; | |
1629 | else | |
1630 | Ffset (first, second); | |
1631 | queue = Fcdr (queue); | |
1632 | } | |
1633 | return Qnil; | |
1634 | } | |
1635 | ||
ca20916b RS |
1636 | /* Load an autoloaded function. |
1637 | FUNNAME is the symbol which is the function's name. | |
1638 | FUNDEF is the autoload definition (a list). */ | |
1639 | ||
045ba794 | 1640 | void |
db9f0278 JB |
1641 | do_autoload (fundef, funname) |
1642 | Lisp_Object fundef, funname; | |
1643 | { | |
1644 | int count = specpdl_ptr - specpdl; | |
2a49b6e5 | 1645 | Lisp_Object fun, val, queue, first, second; |
ca20916b | 1646 | struct gcpro gcpro1, gcpro2, gcpro3; |
db9f0278 JB |
1647 | |
1648 | fun = funname; | |
1649 | CHECK_SYMBOL (funname, 0); | |
ca20916b | 1650 | GCPRO3 (fun, funname, fundef); |
db9f0278 JB |
1651 | |
1652 | /* Value saved here is to be restored into Vautoload_queue */ | |
1653 | record_unwind_protect (un_autoload, Vautoload_queue); | |
1654 | Vautoload_queue = Qt; | |
4aac2302 | 1655 | Fload (Fcar (Fcdr (fundef)), Qnil, noninteractive ? Qt : Qnil, Qnil, Qt); |
2a49b6e5 RS |
1656 | |
1657 | /* Save the old autoloads, in case we ever do an unload. */ | |
1658 | queue = Vautoload_queue; | |
1659 | while (CONSP (queue)) | |
1660 | { | |
1661 | first = Fcar (queue); | |
1662 | second = Fcdr (first); | |
1663 | first = Fcar (first); | |
5739ce6b ER |
1664 | |
1665 | /* Note: This test is subtle. The cdr of an autoload-queue entry | |
1666 | may be an atom if the autoload entry was generated by a defalias | |
1667 | or fset. */ | |
1668 | if (CONSP (second)) | |
03e267c2 | 1669 | Fput (first, Qautoload, (Fcdr (second))); |
5739ce6b | 1670 | |
2a49b6e5 RS |
1671 | queue = Fcdr (queue); |
1672 | } | |
1673 | ||
db9f0278 JB |
1674 | /* Once loading finishes, don't undo it. */ |
1675 | Vautoload_queue = Qt; | |
1676 | unbind_to (count, Qnil); | |
1677 | ||
ffd56f97 JB |
1678 | fun = Findirect_function (fun); |
1679 | ||
76c2b0cc | 1680 | if (!NILP (Fequal (fun, fundef))) |
db9f0278 JB |
1681 | error ("Autoloading failed to define function %s", |
1682 | XSYMBOL (funname)->name->data); | |
ca20916b | 1683 | UNGCPRO; |
db9f0278 JB |
1684 | } |
1685 | \f | |
1686 | DEFUN ("eval", Feval, Seval, 1, 1, 0, | |
1687 | "Evaluate FORM and return its value.") | |
1688 | (form) | |
1689 | Lisp_Object form; | |
1690 | { | |
1691 | Lisp_Object fun, val, original_fun, original_args; | |
1692 | Lisp_Object funcar; | |
1693 | struct backtrace backtrace; | |
1694 | struct gcpro gcpro1, gcpro2, gcpro3; | |
1695 | ||
90165123 | 1696 | if (SYMBOLP (form)) |
db9f0278 JB |
1697 | { |
1698 | if (EQ (Vmocklisp_arguments, Qt)) | |
1699 | return Fsymbol_value (form); | |
1700 | val = Fsymbol_value (form); | |
265a9e55 | 1701 | if (NILP (val)) |
a631e24c | 1702 | XSETFASTINT (val, 0); |
db9f0278 | 1703 | else if (EQ (val, Qt)) |
a631e24c | 1704 | XSETFASTINT (val, 1); |
db9f0278 JB |
1705 | return val; |
1706 | } | |
1707 | if (!CONSP (form)) | |
1708 | return form; | |
1709 | ||
1710 | QUIT; | |
1711 | if (consing_since_gc > gc_cons_threshold) | |
1712 | { | |
1713 | GCPRO1 (form); | |
1714 | Fgarbage_collect (); | |
1715 | UNGCPRO; | |
1716 | } | |
1717 | ||
1718 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
1719 | { | |
1720 | if (max_lisp_eval_depth < 100) | |
1721 | max_lisp_eval_depth = 100; | |
1722 | if (lisp_eval_depth > max_lisp_eval_depth) | |
1723 | error ("Lisp nesting exceeds max-lisp-eval-depth"); | |
1724 | } | |
1725 | ||
1726 | original_fun = Fcar (form); | |
1727 | original_args = Fcdr (form); | |
1728 | ||
1729 | backtrace.next = backtrace_list; | |
1730 | backtrace_list = &backtrace; | |
1731 | backtrace.function = &original_fun; /* This also protects them from gc */ | |
1732 | backtrace.args = &original_args; | |
1733 | backtrace.nargs = UNEVALLED; | |
1734 | backtrace.evalargs = 1; | |
1735 | backtrace.debug_on_exit = 0; | |
1736 | ||
1737 | if (debug_on_next_call) | |
1738 | do_debug_on_call (Qt); | |
1739 | ||
1740 | /* At this point, only original_fun and original_args | |
1741 | have values that will be used below */ | |
1742 | retry: | |
ffd56f97 | 1743 | fun = Findirect_function (original_fun); |
db9f0278 | 1744 | |
90165123 | 1745 | if (SUBRP (fun)) |
db9f0278 JB |
1746 | { |
1747 | Lisp_Object numargs; | |
166c822d | 1748 | Lisp_Object argvals[8]; |
db9f0278 JB |
1749 | Lisp_Object args_left; |
1750 | register int i, maxargs; | |
1751 | ||
1752 | args_left = original_args; | |
1753 | numargs = Flength (args_left); | |
1754 | ||
1755 | if (XINT (numargs) < XSUBR (fun)->min_args || | |
1756 | (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < XINT (numargs))) | |
1757 | return Fsignal (Qwrong_number_of_arguments, Fcons (fun, Fcons (numargs, Qnil))); | |
1758 | ||
1759 | if (XSUBR (fun)->max_args == UNEVALLED) | |
1760 | { | |
1761 | backtrace.evalargs = 0; | |
1762 | val = (*XSUBR (fun)->function) (args_left); | |
1763 | goto done; | |
1764 | } | |
1765 | ||
1766 | if (XSUBR (fun)->max_args == MANY) | |
1767 | { | |
1768 | /* Pass a vector of evaluated arguments */ | |
1769 | Lisp_Object *vals; | |
1770 | register int argnum = 0; | |
1771 | ||
1772 | vals = (Lisp_Object *) alloca (XINT (numargs) * sizeof (Lisp_Object)); | |
1773 | ||
1774 | GCPRO3 (args_left, fun, fun); | |
1775 | gcpro3.var = vals; | |
1776 | gcpro3.nvars = 0; | |
1777 | ||
265a9e55 | 1778 | while (!NILP (args_left)) |
db9f0278 JB |
1779 | { |
1780 | vals[argnum++] = Feval (Fcar (args_left)); | |
1781 | args_left = Fcdr (args_left); | |
1782 | gcpro3.nvars = argnum; | |
1783 | } | |
db9f0278 JB |
1784 | |
1785 | backtrace.args = vals; | |
1786 | backtrace.nargs = XINT (numargs); | |
1787 | ||
1788 | val = (*XSUBR (fun)->function) (XINT (numargs), vals); | |
a6e3fa71 | 1789 | UNGCPRO; |
db9f0278 JB |
1790 | goto done; |
1791 | } | |
1792 | ||
1793 | GCPRO3 (args_left, fun, fun); | |
1794 | gcpro3.var = argvals; | |
1795 | gcpro3.nvars = 0; | |
1796 | ||
1797 | maxargs = XSUBR (fun)->max_args; | |
1798 | for (i = 0; i < maxargs; args_left = Fcdr (args_left)) | |
1799 | { | |
1800 | argvals[i] = Feval (Fcar (args_left)); | |
1801 | gcpro3.nvars = ++i; | |
1802 | } | |
1803 | ||
1804 | UNGCPRO; | |
1805 | ||
1806 | backtrace.args = argvals; | |
1807 | backtrace.nargs = XINT (numargs); | |
1808 | ||
1809 | switch (i) | |
1810 | { | |
1811 | case 0: | |
1812 | val = (*XSUBR (fun)->function) (); | |
1813 | goto done; | |
1814 | case 1: | |
1815 | val = (*XSUBR (fun)->function) (argvals[0]); | |
1816 | goto done; | |
1817 | case 2: | |
1818 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1]); | |
1819 | goto done; | |
1820 | case 3: | |
1821 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], | |
1822 | argvals[2]); | |
1823 | goto done; | |
1824 | case 4: | |
1825 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], | |
1826 | argvals[2], argvals[3]); | |
1827 | goto done; | |
1828 | case 5: | |
1829 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
1830 | argvals[3], argvals[4]); | |
1831 | goto done; | |
1832 | case 6: | |
1833 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
1834 | argvals[3], argvals[4], argvals[5]); | |
1835 | goto done; | |
15c65264 RS |
1836 | case 7: |
1837 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
1838 | argvals[3], argvals[4], argvals[5], | |
1839 | argvals[6]); | |
1840 | goto done; | |
db9f0278 | 1841 | |
166c822d KH |
1842 | case 8: |
1843 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
1844 | argvals[3], argvals[4], argvals[5], | |
1845 | argvals[6], argvals[7]); | |
1846 | goto done; | |
1847 | ||
db9f0278 | 1848 | default: |
08564963 JB |
1849 | /* Someone has created a subr that takes more arguments than |
1850 | is supported by this code. We need to either rewrite the | |
1851 | subr to use a different argument protocol, or add more | |
1852 | cases to this switch. */ | |
1853 | abort (); | |
db9f0278 JB |
1854 | } |
1855 | } | |
90165123 | 1856 | if (COMPILEDP (fun)) |
db9f0278 JB |
1857 | val = apply_lambda (fun, original_args, 1); |
1858 | else | |
1859 | { | |
1860 | if (!CONSP (fun)) | |
1861 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); | |
1862 | funcar = Fcar (fun); | |
90165123 | 1863 | if (!SYMBOLP (funcar)) |
db9f0278 JB |
1864 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); |
1865 | if (EQ (funcar, Qautoload)) | |
1866 | { | |
1867 | do_autoload (fun, original_fun); | |
1868 | goto retry; | |
1869 | } | |
1870 | if (EQ (funcar, Qmacro)) | |
1871 | val = Feval (apply1 (Fcdr (fun), original_args)); | |
1872 | else if (EQ (funcar, Qlambda)) | |
1873 | val = apply_lambda (fun, original_args, 1); | |
1874 | else if (EQ (funcar, Qmocklisp)) | |
1875 | val = ml_apply (fun, original_args); | |
1876 | else | |
1877 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); | |
1878 | } | |
1879 | done: | |
1880 | if (!EQ (Vmocklisp_arguments, Qt)) | |
1881 | { | |
265a9e55 | 1882 | if (NILP (val)) |
a631e24c | 1883 | XSETFASTINT (val, 0); |
db9f0278 | 1884 | else if (EQ (val, Qt)) |
a631e24c | 1885 | XSETFASTINT (val, 1); |
db9f0278 JB |
1886 | } |
1887 | lisp_eval_depth--; | |
1888 | if (backtrace.debug_on_exit) | |
1889 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
1890 | backtrace_list = backtrace.next; | |
1891 | return val; | |
1892 | } | |
1893 | \f | |
1894 | DEFUN ("apply", Fapply, Sapply, 2, MANY, 0, | |
1895 | "Call FUNCTION with our remaining args, using our last arg as list of args.\n\ | |
fd7fe9a1 | 1896 | Then return the value FUNCTION returns.\n\ |
db9f0278 JB |
1897 | Thus, (apply '+ 1 2 '(3 4)) returns 10.") |
1898 | (nargs, args) | |
1899 | int nargs; | |
1900 | Lisp_Object *args; | |
1901 | { | |
1902 | register int i, numargs; | |
1903 | register Lisp_Object spread_arg; | |
1904 | register Lisp_Object *funcall_args; | |
db9f0278 | 1905 | Lisp_Object fun; |
a6e3fa71 | 1906 | struct gcpro gcpro1; |
db9f0278 JB |
1907 | |
1908 | fun = args [0]; | |
1909 | funcall_args = 0; | |
1910 | spread_arg = args [nargs - 1]; | |
1911 | CHECK_LIST (spread_arg, nargs); | |
1912 | ||
1913 | numargs = XINT (Flength (spread_arg)); | |
1914 | ||
1915 | if (numargs == 0) | |
1916 | return Ffuncall (nargs - 1, args); | |
1917 | else if (numargs == 1) | |
1918 | { | |
1919 | args [nargs - 1] = XCONS (spread_arg)->car; | |
1920 | return Ffuncall (nargs, args); | |
1921 | } | |
1922 | ||
a6e3fa71 | 1923 | numargs += nargs - 2; |
db9f0278 | 1924 | |
ffd56f97 JB |
1925 | fun = indirect_function (fun); |
1926 | if (EQ (fun, Qunbound)) | |
db9f0278 | 1927 | { |
ffd56f97 JB |
1928 | /* Let funcall get the error */ |
1929 | fun = args[0]; | |
1930 | goto funcall; | |
db9f0278 JB |
1931 | } |
1932 | ||
90165123 | 1933 | if (SUBRP (fun)) |
db9f0278 JB |
1934 | { |
1935 | if (numargs < XSUBR (fun)->min_args | |
1936 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) | |
1937 | goto funcall; /* Let funcall get the error */ | |
1938 | else if (XSUBR (fun)->max_args > numargs) | |
1939 | { | |
1940 | /* Avoid making funcall cons up a yet another new vector of arguments | |
1941 | by explicitly supplying nil's for optional values */ | |
1942 | funcall_args = (Lisp_Object *) alloca ((1 + XSUBR (fun)->max_args) | |
1943 | * sizeof (Lisp_Object)); | |
1944 | for (i = numargs; i < XSUBR (fun)->max_args;) | |
1945 | funcall_args[++i] = Qnil; | |
a6e3fa71 JB |
1946 | GCPRO1 (*funcall_args); |
1947 | gcpro1.nvars = 1 + XSUBR (fun)->max_args; | |
db9f0278 JB |
1948 | } |
1949 | } | |
1950 | funcall: | |
1951 | /* We add 1 to numargs because funcall_args includes the | |
1952 | function itself as well as its arguments. */ | |
1953 | if (!funcall_args) | |
a6e3fa71 JB |
1954 | { |
1955 | funcall_args = (Lisp_Object *) alloca ((1 + numargs) | |
1956 | * sizeof (Lisp_Object)); | |
1957 | GCPRO1 (*funcall_args); | |
1958 | gcpro1.nvars = 1 + numargs; | |
1959 | } | |
1960 | ||
db9f0278 JB |
1961 | bcopy (args, funcall_args, nargs * sizeof (Lisp_Object)); |
1962 | /* Spread the last arg we got. Its first element goes in | |
1963 | the slot that it used to occupy, hence this value of I. */ | |
1964 | i = nargs - 1; | |
265a9e55 | 1965 | while (!NILP (spread_arg)) |
db9f0278 JB |
1966 | { |
1967 | funcall_args [i++] = XCONS (spread_arg)->car; | |
1968 | spread_arg = XCONS (spread_arg)->cdr; | |
1969 | } | |
a6e3fa71 JB |
1970 | |
1971 | RETURN_UNGCPRO (Ffuncall (gcpro1.nvars, funcall_args)); | |
db9f0278 JB |
1972 | } |
1973 | \f | |
ff936e53 SM |
1974 | /* Run hook variables in various ways. */ |
1975 | ||
1976 | enum run_hooks_condition {to_completion, until_success, until_failure}; | |
1977 | ||
1978 | DEFUN ("run-hooks", Frun_hooks, Srun_hooks, 1, MANY, 0, | |
1979 | "Run each hook in HOOKS. Major mode functions use this.\n\ | |
1980 | Each argument should be a symbol, a hook variable.\n\ | |
1981 | These symbols are processed in the order specified.\n\ | |
1982 | If a hook symbol has a non-nil value, that value may be a function\n\ | |
1983 | or a list of functions to be called to run the hook.\n\ | |
1984 | If the value is a function, it is called with no arguments.\n\ | |
1985 | If it is a list, the elements are called, in order, with no arguments.\n\ | |
1986 | \n\ | |
1987 | To make a hook variable buffer-local, use `make-local-hook',\n\ | |
1988 | not `make-local-variable'.") | |
1989 | (nargs, args) | |
1990 | int nargs; | |
1991 | Lisp_Object *args; | |
1992 | { | |
1993 | Lisp_Object hook[1]; | |
1994 | register int i; | |
1995 | ||
1996 | for (i = 0; i < nargs; i++) | |
1997 | { | |
1998 | hook[0] = args[i]; | |
1999 | run_hook_with_args (1, hook, to_completion); | |
2000 | } | |
2001 | ||
2002 | return Qnil; | |
2003 | } | |
2004 | ||
a0d76c27 EN |
2005 | DEFUN ("run-hook-with-args", Frun_hook_with_args, |
2006 | Srun_hook_with_args, 1, MANY, 0, | |
b0b667cb KH |
2007 | "Run HOOK with the specified arguments ARGS.\n\ |
2008 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil\n\ | |
2009 | value, that value may be a function or a list of functions to be\n\ | |
2010 | called to run the hook. If the value is a function, it is called with\n\ | |
2011 | the given arguments and its return value is returned. If it is a list\n\ | |
2012 | of functions, those functions are called, in order,\n\ | |
2013 | with the given arguments ARGS.\n\ | |
2014 | It is best not to depend on the value return by `run-hook-with-args',\n\ | |
2015 | as that may change.\n\ | |
2016 | \n\ | |
ff936e53 SM |
2017 | To make a hook variable buffer-local, use `make-local-hook',\n\ |
2018 | not `make-local-variable'.") | |
2019 | (nargs, args) | |
2020 | int nargs; | |
2021 | Lisp_Object *args; | |
2022 | { | |
2023 | return run_hook_with_args (nargs, args, to_completion); | |
2024 | } | |
2025 | ||
a0d76c27 EN |
2026 | DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success, |
2027 | Srun_hook_with_args_until_success, 1, MANY, 0, | |
ff936e53 SM |
2028 | "Run HOOK with the specified arguments ARGS.\n\ |
2029 | HOOK should be a symbol, a hook variable. Its value should\n\ | |
2030 | be a list of functions. We call those functions, one by one,\n\ | |
2031 | passing arguments ARGS to each of them, until one of them\n\ | |
2032 | returns a non-nil value. Then we return that value.\n\ | |
2033 | If all the functions return nil, we return nil.\n\ | |
2034 | \n\ | |
2035 | To make a hook variable buffer-local, use `make-local-hook',\n\ | |
2036 | not `make-local-variable'.") | |
b0b667cb KH |
2037 | (nargs, args) |
2038 | int nargs; | |
2039 | Lisp_Object *args; | |
2040 | { | |
ff936e53 SM |
2041 | return run_hook_with_args (nargs, args, until_success); |
2042 | } | |
2043 | ||
a0d76c27 EN |
2044 | DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure, |
2045 | Srun_hook_with_args_until_failure, 1, MANY, 0, | |
ff936e53 SM |
2046 | "Run HOOK with the specified arguments ARGS.\n\ |
2047 | HOOK should be a symbol, a hook variable. Its value should\n\ | |
2048 | be a list of functions. We call those functions, one by one,\n\ | |
2049 | passing arguments ARGS to each of them, until one of them\n\ | |
2050 | returns nil. Then we return nil.\n\ | |
2051 | If all the functions return non-nil, we return non-nil.\n\ | |
2052 | \n\ | |
2053 | To make a hook variable buffer-local, use `make-local-hook',\n\ | |
2054 | not `make-local-variable'.") | |
2055 | (nargs, args) | |
2056 | int nargs; | |
2057 | Lisp_Object *args; | |
2058 | { | |
2059 | return run_hook_with_args (nargs, args, until_failure); | |
2060 | } | |
2061 | ||
c933ea05 RS |
2062 | /* ARGS[0] should be a hook symbol. |
2063 | Call each of the functions in the hook value, passing each of them | |
2064 | as arguments all the rest of ARGS (all NARGS - 1 elements). | |
2065 | COND specifies a condition to test after each call | |
2066 | to decide whether to stop. | |
2067 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2068 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2069 | ||
ff936e53 SM |
2070 | Lisp_Object |
2071 | run_hook_with_args (nargs, args, cond) | |
2072 | int nargs; | |
2073 | Lisp_Object *args; | |
2074 | enum run_hooks_condition cond; | |
2075 | { | |
2076 | Lisp_Object sym, val, ret; | |
c933ea05 | 2077 | struct gcpro gcpro1, gcpro2; |
b0b667cb | 2078 | |
f029ca5f RS |
2079 | /* If we are dying or still initializing, |
2080 | don't do anything--it would probably crash if we tried. */ | |
2081 | if (NILP (Vrun_hooks)) | |
2082 | return; | |
2083 | ||
b0b667cb | 2084 | sym = args[0]; |
aa681b51 | 2085 | val = find_symbol_value (sym); |
ff936e53 SM |
2086 | ret = (cond == until_failure ? Qt : Qnil); |
2087 | ||
b0b667cb | 2088 | if (EQ (val, Qunbound) || NILP (val)) |
ff936e53 | 2089 | return ret; |
b0b667cb KH |
2090 | else if (!CONSP (val) || EQ (XCONS (val)->car, Qlambda)) |
2091 | { | |
2092 | args[0] = val; | |
2093 | return Ffuncall (nargs, args); | |
2094 | } | |
2095 | else | |
2096 | { | |
cb9d21f8 RS |
2097 | GCPRO2 (sym, val); |
2098 | ||
ff936e53 SM |
2099 | for (; |
2100 | CONSP (val) && ((cond == to_completion) | |
2101 | || (cond == until_success ? NILP (ret) | |
2102 | : !NILP (ret))); | |
2103 | val = XCONS (val)->cdr) | |
b0b667cb KH |
2104 | { |
2105 | if (EQ (XCONS (val)->car, Qt)) | |
2106 | { | |
2107 | /* t indicates this hook has a local binding; | |
2108 | it means to run the global binding too. */ | |
2109 | Lisp_Object globals; | |
2110 | ||
ff936e53 SM |
2111 | for (globals = Fdefault_value (sym); |
2112 | CONSP (globals) && ((cond == to_completion) | |
2113 | || (cond == until_success ? NILP (ret) | |
2114 | : !NILP (ret))); | |
b0b667cb KH |
2115 | globals = XCONS (globals)->cdr) |
2116 | { | |
2117 | args[0] = XCONS (globals)->car; | |
77d92e05 RS |
2118 | /* In a global value, t should not occur. If it does, we |
2119 | must ignore it to avoid an endless loop. */ | |
2120 | if (!EQ (args[0], Qt)) | |
2121 | ret = Ffuncall (nargs, args); | |
b0b667cb KH |
2122 | } |
2123 | } | |
2124 | else | |
2125 | { | |
2126 | args[0] = XCONS (val)->car; | |
ff936e53 | 2127 | ret = Ffuncall (nargs, args); |
b0b667cb KH |
2128 | } |
2129 | } | |
cb9d21f8 RS |
2130 | |
2131 | UNGCPRO; | |
ff936e53 | 2132 | return ret; |
b0b667cb KH |
2133 | } |
2134 | } | |
c933ea05 RS |
2135 | |
2136 | /* Run a hook symbol ARGS[0], but use FUNLIST instead of the actual | |
2137 | present value of that symbol. | |
2138 | Call each element of FUNLIST, | |
2139 | passing each of them the rest of ARGS. | |
2140 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2141 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2142 | ||
2143 | Lisp_Object | |
2144 | run_hook_list_with_args (funlist, nargs, args) | |
2145 | Lisp_Object funlist; | |
2146 | int nargs; | |
2147 | Lisp_Object *args; | |
2148 | { | |
2149 | Lisp_Object sym; | |
2150 | Lisp_Object val; | |
2151 | struct gcpro gcpro1, gcpro2; | |
2152 | ||
2153 | sym = args[0]; | |
2154 | GCPRO2 (sym, val); | |
2155 | ||
2156 | for (val = funlist; CONSP (val); val = XCONS (val)->cdr) | |
2157 | { | |
2158 | if (EQ (XCONS (val)->car, Qt)) | |
2159 | { | |
2160 | /* t indicates this hook has a local binding; | |
2161 | it means to run the global binding too. */ | |
2162 | Lisp_Object globals; | |
2163 | ||
2164 | for (globals = Fdefault_value (sym); | |
2165 | CONSP (globals); | |
2166 | globals = XCONS (globals)->cdr) | |
2167 | { | |
2168 | args[0] = XCONS (globals)->car; | |
77d92e05 RS |
2169 | /* In a global value, t should not occur. If it does, we |
2170 | must ignore it to avoid an endless loop. */ | |
2171 | if (!EQ (args[0], Qt)) | |
2172 | Ffuncall (nargs, args); | |
c933ea05 RS |
2173 | } |
2174 | } | |
2175 | else | |
2176 | { | |
2177 | args[0] = XCONS (val)->car; | |
2178 | Ffuncall (nargs, args); | |
2179 | } | |
2180 | } | |
2181 | UNGCPRO; | |
2182 | return Qnil; | |
2183 | } | |
7d48558f RS |
2184 | |
2185 | /* Run the hook HOOK, giving each function the two args ARG1 and ARG2. */ | |
2186 | ||
2187 | void | |
2188 | run_hook_with_args_2 (hook, arg1, arg2) | |
2189 | Lisp_Object hook, arg1, arg2; | |
2190 | { | |
2191 | Lisp_Object temp[3]; | |
2192 | temp[0] = hook; | |
2193 | temp[1] = arg1; | |
2194 | temp[2] = arg2; | |
2195 | ||
2196 | Frun_hook_with_args (3, temp); | |
2197 | } | |
ff936e53 | 2198 | \f |
db9f0278 JB |
2199 | /* Apply fn to arg */ |
2200 | Lisp_Object | |
2201 | apply1 (fn, arg) | |
2202 | Lisp_Object fn, arg; | |
2203 | { | |
a6e3fa71 JB |
2204 | struct gcpro gcpro1; |
2205 | ||
2206 | GCPRO1 (fn); | |
265a9e55 | 2207 | if (NILP (arg)) |
a6e3fa71 JB |
2208 | RETURN_UNGCPRO (Ffuncall (1, &fn)); |
2209 | gcpro1.nvars = 2; | |
db9f0278 JB |
2210 | #ifdef NO_ARG_ARRAY |
2211 | { | |
2212 | Lisp_Object args[2]; | |
2213 | args[0] = fn; | |
2214 | args[1] = arg; | |
a6e3fa71 JB |
2215 | gcpro1.var = args; |
2216 | RETURN_UNGCPRO (Fapply (2, args)); | |
db9f0278 JB |
2217 | } |
2218 | #else /* not NO_ARG_ARRAY */ | |
a6e3fa71 | 2219 | RETURN_UNGCPRO (Fapply (2, &fn)); |
db9f0278 JB |
2220 | #endif /* not NO_ARG_ARRAY */ |
2221 | } | |
2222 | ||
2223 | /* Call function fn on no arguments */ | |
2224 | Lisp_Object | |
2225 | call0 (fn) | |
2226 | Lisp_Object fn; | |
2227 | { | |
a6e3fa71 JB |
2228 | struct gcpro gcpro1; |
2229 | ||
2230 | GCPRO1 (fn); | |
2231 | RETURN_UNGCPRO (Ffuncall (1, &fn)); | |
db9f0278 JB |
2232 | } |
2233 | ||
15285f9f | 2234 | /* Call function fn with 1 argument arg1 */ |
db9f0278 JB |
2235 | /* ARGSUSED */ |
2236 | Lisp_Object | |
15285f9f RS |
2237 | call1 (fn, arg1) |
2238 | Lisp_Object fn, arg1; | |
db9f0278 | 2239 | { |
a6e3fa71 | 2240 | struct gcpro gcpro1; |
db9f0278 | 2241 | #ifdef NO_ARG_ARRAY |
a6e3fa71 JB |
2242 | Lisp_Object args[2]; |
2243 | ||
db9f0278 | 2244 | args[0] = fn; |
15285f9f | 2245 | args[1] = arg1; |
a6e3fa71 JB |
2246 | GCPRO1 (args[0]); |
2247 | gcpro1.nvars = 2; | |
2248 | RETURN_UNGCPRO (Ffuncall (2, args)); | |
db9f0278 | 2249 | #else /* not NO_ARG_ARRAY */ |
a6e3fa71 JB |
2250 | GCPRO1 (fn); |
2251 | gcpro1.nvars = 2; | |
2252 | RETURN_UNGCPRO (Ffuncall (2, &fn)); | |
db9f0278 JB |
2253 | #endif /* not NO_ARG_ARRAY */ |
2254 | } | |
2255 | ||
15285f9f | 2256 | /* Call function fn with 2 arguments arg1, arg2 */ |
db9f0278 JB |
2257 | /* ARGSUSED */ |
2258 | Lisp_Object | |
15285f9f RS |
2259 | call2 (fn, arg1, arg2) |
2260 | Lisp_Object fn, arg1, arg2; | |
db9f0278 | 2261 | { |
a6e3fa71 | 2262 | struct gcpro gcpro1; |
db9f0278 JB |
2263 | #ifdef NO_ARG_ARRAY |
2264 | Lisp_Object args[3]; | |
2265 | args[0] = fn; | |
15285f9f RS |
2266 | args[1] = arg1; |
2267 | args[2] = arg2; | |
a6e3fa71 JB |
2268 | GCPRO1 (args[0]); |
2269 | gcpro1.nvars = 3; | |
2270 | RETURN_UNGCPRO (Ffuncall (3, args)); | |
db9f0278 | 2271 | #else /* not NO_ARG_ARRAY */ |
a6e3fa71 JB |
2272 | GCPRO1 (fn); |
2273 | gcpro1.nvars = 3; | |
2274 | RETURN_UNGCPRO (Ffuncall (3, &fn)); | |
db9f0278 JB |
2275 | #endif /* not NO_ARG_ARRAY */ |
2276 | } | |
2277 | ||
15285f9f | 2278 | /* Call function fn with 3 arguments arg1, arg2, arg3 */ |
db9f0278 JB |
2279 | /* ARGSUSED */ |
2280 | Lisp_Object | |
15285f9f RS |
2281 | call3 (fn, arg1, arg2, arg3) |
2282 | Lisp_Object fn, arg1, arg2, arg3; | |
db9f0278 | 2283 | { |
a6e3fa71 | 2284 | struct gcpro gcpro1; |
db9f0278 JB |
2285 | #ifdef NO_ARG_ARRAY |
2286 | Lisp_Object args[4]; | |
2287 | args[0] = fn; | |
15285f9f RS |
2288 | args[1] = arg1; |
2289 | args[2] = arg2; | |
2290 | args[3] = arg3; | |
a6e3fa71 JB |
2291 | GCPRO1 (args[0]); |
2292 | gcpro1.nvars = 4; | |
2293 | RETURN_UNGCPRO (Ffuncall (4, args)); | |
db9f0278 | 2294 | #else /* not NO_ARG_ARRAY */ |
a6e3fa71 JB |
2295 | GCPRO1 (fn); |
2296 | gcpro1.nvars = 4; | |
2297 | RETURN_UNGCPRO (Ffuncall (4, &fn)); | |
db9f0278 JB |
2298 | #endif /* not NO_ARG_ARRAY */ |
2299 | } | |
2300 | ||
15285f9f | 2301 | /* Call function fn with 4 arguments arg1, arg2, arg3, arg4 */ |
a5a44b91 JB |
2302 | /* ARGSUSED */ |
2303 | Lisp_Object | |
15285f9f RS |
2304 | call4 (fn, arg1, arg2, arg3, arg4) |
2305 | Lisp_Object fn, arg1, arg2, arg3, arg4; | |
a5a44b91 JB |
2306 | { |
2307 | struct gcpro gcpro1; | |
2308 | #ifdef NO_ARG_ARRAY | |
2309 | Lisp_Object args[5]; | |
2310 | args[0] = fn; | |
15285f9f RS |
2311 | args[1] = arg1; |
2312 | args[2] = arg2; | |
2313 | args[3] = arg3; | |
2314 | args[4] = arg4; | |
a5a44b91 JB |
2315 | GCPRO1 (args[0]); |
2316 | gcpro1.nvars = 5; | |
2317 | RETURN_UNGCPRO (Ffuncall (5, args)); | |
2318 | #else /* not NO_ARG_ARRAY */ | |
2319 | GCPRO1 (fn); | |
2320 | gcpro1.nvars = 5; | |
2321 | RETURN_UNGCPRO (Ffuncall (5, &fn)); | |
2322 | #endif /* not NO_ARG_ARRAY */ | |
2323 | } | |
2324 | ||
15285f9f RS |
2325 | /* Call function fn with 5 arguments arg1, arg2, arg3, arg4, arg5 */ |
2326 | /* ARGSUSED */ | |
2327 | Lisp_Object | |
2328 | call5 (fn, arg1, arg2, arg3, arg4, arg5) | |
2329 | Lisp_Object fn, arg1, arg2, arg3, arg4, arg5; | |
2330 | { | |
2331 | struct gcpro gcpro1; | |
2332 | #ifdef NO_ARG_ARRAY | |
2333 | Lisp_Object args[6]; | |
2334 | args[0] = fn; | |
2335 | args[1] = arg1; | |
2336 | args[2] = arg2; | |
2337 | args[3] = arg3; | |
2338 | args[4] = arg4; | |
2339 | args[5] = arg5; | |
2340 | GCPRO1 (args[0]); | |
2341 | gcpro1.nvars = 6; | |
2342 | RETURN_UNGCPRO (Ffuncall (6, args)); | |
2343 | #else /* not NO_ARG_ARRAY */ | |
2344 | GCPRO1 (fn); | |
2345 | gcpro1.nvars = 6; | |
2346 | RETURN_UNGCPRO (Ffuncall (6, &fn)); | |
2347 | #endif /* not NO_ARG_ARRAY */ | |
2348 | } | |
2349 | ||
2350 | /* Call function fn with 6 arguments arg1, arg2, arg3, arg4, arg5, arg6 */ | |
2351 | /* ARGSUSED */ | |
2352 | Lisp_Object | |
2353 | call6 (fn, arg1, arg2, arg3, arg4, arg5, arg6) | |
2354 | Lisp_Object fn, arg1, arg2, arg3, arg4, arg5, arg6; | |
2355 | { | |
2356 | struct gcpro gcpro1; | |
2357 | #ifdef NO_ARG_ARRAY | |
2358 | Lisp_Object args[7]; | |
2359 | args[0] = fn; | |
2360 | args[1] = arg1; | |
2361 | args[2] = arg2; | |
2362 | args[3] = arg3; | |
2363 | args[4] = arg4; | |
2364 | args[5] = arg5; | |
2365 | args[6] = arg6; | |
2366 | GCPRO1 (args[0]); | |
2367 | gcpro1.nvars = 7; | |
2368 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
2369 | #else /* not NO_ARG_ARRAY */ | |
2370 | GCPRO1 (fn); | |
2371 | gcpro1.nvars = 7; | |
2372 | RETURN_UNGCPRO (Ffuncall (7, &fn)); | |
2373 | #endif /* not NO_ARG_ARRAY */ | |
2374 | } | |
2375 | ||
db9f0278 JB |
2376 | DEFUN ("funcall", Ffuncall, Sfuncall, 1, MANY, 0, |
2377 | "Call first argument as a function, passing remaining arguments to it.\n\ | |
fd7fe9a1 | 2378 | Return the value that function returns.\n\ |
db9f0278 JB |
2379 | Thus, (funcall 'cons 'x 'y) returns (x . y).") |
2380 | (nargs, args) | |
2381 | int nargs; | |
2382 | Lisp_Object *args; | |
2383 | { | |
2384 | Lisp_Object fun; | |
2385 | Lisp_Object funcar; | |
2386 | int numargs = nargs - 1; | |
2387 | Lisp_Object lisp_numargs; | |
2388 | Lisp_Object val; | |
2389 | struct backtrace backtrace; | |
2390 | register Lisp_Object *internal_args; | |
2391 | register int i; | |
2392 | ||
2393 | QUIT; | |
2394 | if (consing_since_gc > gc_cons_threshold) | |
a6e3fa71 | 2395 | Fgarbage_collect (); |
db9f0278 JB |
2396 | |
2397 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2398 | { | |
2399 | if (max_lisp_eval_depth < 100) | |
2400 | max_lisp_eval_depth = 100; | |
2401 | if (lisp_eval_depth > max_lisp_eval_depth) | |
2402 | error ("Lisp nesting exceeds max-lisp-eval-depth"); | |
2403 | } | |
2404 | ||
2405 | backtrace.next = backtrace_list; | |
2406 | backtrace_list = &backtrace; | |
2407 | backtrace.function = &args[0]; | |
2408 | backtrace.args = &args[1]; | |
2409 | backtrace.nargs = nargs - 1; | |
2410 | backtrace.evalargs = 0; | |
2411 | backtrace.debug_on_exit = 0; | |
2412 | ||
2413 | if (debug_on_next_call) | |
2414 | do_debug_on_call (Qlambda); | |
2415 | ||
2416 | retry: | |
2417 | ||
2418 | fun = args[0]; | |
ffd56f97 JB |
2419 | |
2420 | fun = Findirect_function (fun); | |
db9f0278 | 2421 | |
90165123 | 2422 | if (SUBRP (fun)) |
db9f0278 JB |
2423 | { |
2424 | if (numargs < XSUBR (fun)->min_args | |
2425 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) | |
2426 | { | |
a631e24c | 2427 | XSETFASTINT (lisp_numargs, numargs); |
db9f0278 JB |
2428 | return Fsignal (Qwrong_number_of_arguments, Fcons (fun, Fcons (lisp_numargs, Qnil))); |
2429 | } | |
2430 | ||
2431 | if (XSUBR (fun)->max_args == UNEVALLED) | |
2432 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); | |
2433 | ||
2434 | if (XSUBR (fun)->max_args == MANY) | |
2435 | { | |
2436 | val = (*XSUBR (fun)->function) (numargs, args + 1); | |
2437 | goto done; | |
2438 | } | |
2439 | ||
2440 | if (XSUBR (fun)->max_args > numargs) | |
2441 | { | |
2442 | internal_args = (Lisp_Object *) alloca (XSUBR (fun)->max_args * sizeof (Lisp_Object)); | |
2443 | bcopy (args + 1, internal_args, numargs * sizeof (Lisp_Object)); | |
2444 | for (i = numargs; i < XSUBR (fun)->max_args; i++) | |
2445 | internal_args[i] = Qnil; | |
2446 | } | |
2447 | else | |
2448 | internal_args = args + 1; | |
2449 | switch (XSUBR (fun)->max_args) | |
2450 | { | |
2451 | case 0: | |
2452 | val = (*XSUBR (fun)->function) (); | |
2453 | goto done; | |
2454 | case 1: | |
2455 | val = (*XSUBR (fun)->function) (internal_args[0]); | |
2456 | goto done; | |
2457 | case 2: | |
2458 | val = (*XSUBR (fun)->function) (internal_args[0], | |
2459 | internal_args[1]); | |
2460 | goto done; | |
2461 | case 3: | |
2462 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
2463 | internal_args[2]); | |
2464 | goto done; | |
2465 | case 4: | |
2466 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
2467 | internal_args[2], | |
2468 | internal_args[3]); | |
2469 | goto done; | |
2470 | case 5: | |
2471 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
2472 | internal_args[2], internal_args[3], | |
2473 | internal_args[4]); | |
2474 | goto done; | |
2475 | case 6: | |
2476 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
2477 | internal_args[2], internal_args[3], | |
2478 | internal_args[4], internal_args[5]); | |
2479 | goto done; | |
15c65264 RS |
2480 | case 7: |
2481 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
2482 | internal_args[2], internal_args[3], | |
2483 | internal_args[4], internal_args[5], | |
2484 | internal_args[6]); | |
2485 | goto done; | |
db9f0278 | 2486 | |
166c822d KH |
2487 | case 8: |
2488 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
2489 | internal_args[2], internal_args[3], | |
2490 | internal_args[4], internal_args[5], | |
2491 | internal_args[6], internal_args[7]); | |
2492 | goto done; | |
2493 | ||
db9f0278 | 2494 | default: |
70ee42f7 | 2495 | |
166c822d | 2496 | /* If a subr takes more than 8 arguments without using MANY |
70ee42f7 JB |
2497 | or UNEVALLED, we need to extend this function to support it. |
2498 | Until this is done, there is no way to call the function. */ | |
2499 | abort (); | |
db9f0278 JB |
2500 | } |
2501 | } | |
90165123 | 2502 | if (COMPILEDP (fun)) |
db9f0278 JB |
2503 | val = funcall_lambda (fun, numargs, args + 1); |
2504 | else | |
2505 | { | |
2506 | if (!CONSP (fun)) | |
2507 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); | |
2508 | funcar = Fcar (fun); | |
90165123 | 2509 | if (!SYMBOLP (funcar)) |
db9f0278 JB |
2510 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); |
2511 | if (EQ (funcar, Qlambda)) | |
2512 | val = funcall_lambda (fun, numargs, args + 1); | |
2513 | else if (EQ (funcar, Qmocklisp)) | |
2514 | val = ml_apply (fun, Flist (numargs, args + 1)); | |
2515 | else if (EQ (funcar, Qautoload)) | |
2516 | { | |
2517 | do_autoload (fun, args[0]); | |
2518 | goto retry; | |
2519 | } | |
2520 | else | |
2521 | return Fsignal (Qinvalid_function, Fcons (fun, Qnil)); | |
2522 | } | |
2523 | done: | |
2524 | lisp_eval_depth--; | |
2525 | if (backtrace.debug_on_exit) | |
2526 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2527 | backtrace_list = backtrace.next; | |
2528 | return val; | |
2529 | } | |
2530 | \f | |
2531 | Lisp_Object | |
2532 | apply_lambda (fun, args, eval_flag) | |
2533 | Lisp_Object fun, args; | |
2534 | int eval_flag; | |
2535 | { | |
2536 | Lisp_Object args_left; | |
2537 | Lisp_Object numargs; | |
2538 | register Lisp_Object *arg_vector; | |
2539 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2540 | register int i; | |
2541 | register Lisp_Object tem; | |
2542 | ||
2543 | numargs = Flength (args); | |
2544 | arg_vector = (Lisp_Object *) alloca (XINT (numargs) * sizeof (Lisp_Object)); | |
2545 | args_left = args; | |
2546 | ||
2547 | GCPRO3 (*arg_vector, args_left, fun); | |
2548 | gcpro1.nvars = 0; | |
2549 | ||
2550 | for (i = 0; i < XINT (numargs);) | |
2551 | { | |
2552 | tem = Fcar (args_left), args_left = Fcdr (args_left); | |
2553 | if (eval_flag) tem = Feval (tem); | |
2554 | arg_vector[i++] = tem; | |
2555 | gcpro1.nvars = i; | |
2556 | } | |
2557 | ||
2558 | UNGCPRO; | |
2559 | ||
2560 | if (eval_flag) | |
2561 | { | |
2562 | backtrace_list->args = arg_vector; | |
2563 | backtrace_list->nargs = i; | |
2564 | } | |
2565 | backtrace_list->evalargs = 0; | |
2566 | tem = funcall_lambda (fun, XINT (numargs), arg_vector); | |
2567 | ||
2568 | /* Do the debug-on-exit now, while arg_vector still exists. */ | |
2569 | if (backtrace_list->debug_on_exit) | |
2570 | tem = call_debugger (Fcons (Qexit, Fcons (tem, Qnil))); | |
2571 | /* Don't do it again when we return to eval. */ | |
2572 | backtrace_list->debug_on_exit = 0; | |
2573 | return tem; | |
2574 | } | |
2575 | ||
2576 | /* Apply a Lisp function FUN to the NARGS evaluated arguments in ARG_VECTOR | |
2577 | and return the result of evaluation. | |
2578 | FUN must be either a lambda-expression or a compiled-code object. */ | |
2579 | ||
2580 | Lisp_Object | |
2581 | funcall_lambda (fun, nargs, arg_vector) | |
2582 | Lisp_Object fun; | |
2583 | int nargs; | |
2584 | register Lisp_Object *arg_vector; | |
2585 | { | |
2586 | Lisp_Object val, tem; | |
2587 | register Lisp_Object syms_left; | |
2588 | Lisp_Object numargs; | |
2589 | register Lisp_Object next; | |
2590 | int count = specpdl_ptr - specpdl; | |
2591 | register int i; | |
2592 | int optional = 0, rest = 0; | |
2593 | ||
2594 | specbind (Qmocklisp_arguments, Qt); /* t means NOT mocklisp! */ | |
2595 | ||
a631e24c | 2596 | XSETFASTINT (numargs, nargs); |
db9f0278 | 2597 | |
90165123 | 2598 | if (CONSP (fun)) |
db9f0278 | 2599 | syms_left = Fcar (Fcdr (fun)); |
90165123 | 2600 | else if (COMPILEDP (fun)) |
db9f0278 JB |
2601 | syms_left = XVECTOR (fun)->contents[COMPILED_ARGLIST]; |
2602 | else abort (); | |
2603 | ||
2604 | i = 0; | |
265a9e55 | 2605 | for (; !NILP (syms_left); syms_left = Fcdr (syms_left)) |
db9f0278 JB |
2606 | { |
2607 | QUIT; | |
2608 | next = Fcar (syms_left); | |
90165123 | 2609 | while (!SYMBOLP (next)) |
9ffa21d4 | 2610 | next = Fsignal (Qinvalid_function, Fcons (fun, Qnil)); |
db9f0278 JB |
2611 | if (EQ (next, Qand_rest)) |
2612 | rest = 1; | |
2613 | else if (EQ (next, Qand_optional)) | |
2614 | optional = 1; | |
2615 | else if (rest) | |
2616 | { | |
9ffa21d4 | 2617 | specbind (next, Flist (nargs - i, &arg_vector[i])); |
db9f0278 JB |
2618 | i = nargs; |
2619 | } | |
2620 | else if (i < nargs) | |
2621 | { | |
2622 | tem = arg_vector[i++]; | |
2623 | specbind (next, tem); | |
2624 | } | |
2625 | else if (!optional) | |
2626 | return Fsignal (Qwrong_number_of_arguments, Fcons (fun, Fcons (numargs, Qnil))); | |
2627 | else | |
2628 | specbind (next, Qnil); | |
2629 | } | |
2630 | ||
2631 | if (i < nargs) | |
2632 | return Fsignal (Qwrong_number_of_arguments, Fcons (fun, Fcons (numargs, Qnil))); | |
2633 | ||
90165123 | 2634 | if (CONSP (fun)) |
db9f0278 JB |
2635 | val = Fprogn (Fcdr (Fcdr (fun))); |
2636 | else | |
ca248607 RS |
2637 | { |
2638 | /* If we have not actually read the bytecode string | |
2639 | and constants vector yet, fetch them from the file. */ | |
2640 | if (CONSP (XVECTOR (fun)->contents[COMPILED_BYTECODE])) | |
661c7d6e | 2641 | Ffetch_bytecode (fun); |
ca248607 RS |
2642 | val = Fbyte_code (XVECTOR (fun)->contents[COMPILED_BYTECODE], |
2643 | XVECTOR (fun)->contents[COMPILED_CONSTANTS], | |
2644 | XVECTOR (fun)->contents[COMPILED_STACK_DEPTH]); | |
2645 | } | |
db9f0278 JB |
2646 | return unbind_to (count, val); |
2647 | } | |
661c7d6e KH |
2648 | |
2649 | DEFUN ("fetch-bytecode", Ffetch_bytecode, Sfetch_bytecode, | |
2650 | 1, 1, 0, | |
2651 | "If byte-compiled OBJECT is lazy-loaded, fetch it now.") | |
2652 | (object) | |
2653 | Lisp_Object object; | |
2654 | { | |
2655 | Lisp_Object tem; | |
2656 | ||
2657 | if (COMPILEDP (object) | |
2658 | && CONSP (XVECTOR (object)->contents[COMPILED_BYTECODE])) | |
2659 | { | |
2660 | tem = read_doc_string (XVECTOR (object)->contents[COMPILED_BYTECODE]); | |
5bbdb090 RS |
2661 | if (!CONSP (tem)) |
2662 | error ("invalid byte code"); | |
661c7d6e KH |
2663 | XVECTOR (object)->contents[COMPILED_BYTECODE] = XCONS (tem)->car; |
2664 | XVECTOR (object)->contents[COMPILED_CONSTANTS] = XCONS (tem)->cdr; | |
2665 | } | |
2666 | return object; | |
2667 | } | |
db9f0278 JB |
2668 | \f |
2669 | void | |
2670 | grow_specpdl () | |
2671 | { | |
2672 | register int count = specpdl_ptr - specpdl; | |
2673 | if (specpdl_size >= max_specpdl_size) | |
2674 | { | |
2675 | if (max_specpdl_size < 400) | |
2676 | max_specpdl_size = 400; | |
2677 | if (specpdl_size >= max_specpdl_size) | |
2678 | { | |
debee8fe RS |
2679 | if (!NILP (Vdebug_on_error)) |
2680 | /* Leave room for some specpdl in the debugger. */ | |
2681 | max_specpdl_size = specpdl_size + 100; | |
db9f0278 JB |
2682 | Fsignal (Qerror, |
2683 | Fcons (build_string ("Variable binding depth exceeds max-specpdl-size"), Qnil)); | |
db9f0278 JB |
2684 | } |
2685 | } | |
2686 | specpdl_size *= 2; | |
2687 | if (specpdl_size > max_specpdl_size) | |
2688 | specpdl_size = max_specpdl_size; | |
2689 | specpdl = (struct specbinding *) xrealloc (specpdl, specpdl_size * sizeof (struct specbinding)); | |
2690 | specpdl_ptr = specpdl + count; | |
2691 | } | |
2692 | ||
2693 | void | |
2694 | specbind (symbol, value) | |
2695 | Lisp_Object symbol, value; | |
2696 | { | |
db9f0278 JB |
2697 | Lisp_Object ovalue; |
2698 | ||
9ffa21d4 JB |
2699 | CHECK_SYMBOL (symbol, 0); |
2700 | ||
db9f0278 JB |
2701 | if (specpdl_ptr == specpdl + specpdl_size) |
2702 | grow_specpdl (); | |
2703 | specpdl_ptr->symbol = symbol; | |
2704 | specpdl_ptr->func = 0; | |
d0f7cdc8 | 2705 | specpdl_ptr->old_value = ovalue = find_symbol_value (symbol); |
db9f0278 | 2706 | specpdl_ptr++; |
3d8585a1 | 2707 | if (BUFFER_OBJFWDP (ovalue) || KBOARD_OBJFWDP (ovalue)) |
db9f0278 JB |
2708 | store_symval_forwarding (symbol, ovalue, value); |
2709 | else | |
ab07bca0 | 2710 | set_internal (symbol, value, 1); |
db9f0278 JB |
2711 | } |
2712 | ||
2713 | void | |
2714 | record_unwind_protect (function, arg) | |
1d159538 | 2715 | Lisp_Object (*function) P_ ((Lisp_Object)); |
db9f0278 JB |
2716 | Lisp_Object arg; |
2717 | { | |
2718 | if (specpdl_ptr == specpdl + specpdl_size) | |
2719 | grow_specpdl (); | |
2720 | specpdl_ptr->func = function; | |
2721 | specpdl_ptr->symbol = Qnil; | |
2722 | specpdl_ptr->old_value = arg; | |
2723 | specpdl_ptr++; | |
2724 | } | |
2725 | ||
2726 | Lisp_Object | |
2727 | unbind_to (count, value) | |
2728 | int count; | |
2729 | Lisp_Object value; | |
2730 | { | |
265a9e55 | 2731 | int quitf = !NILP (Vquit_flag); |
db9f0278 JB |
2732 | struct gcpro gcpro1; |
2733 | ||
2734 | GCPRO1 (value); | |
2735 | ||
2736 | Vquit_flag = Qnil; | |
2737 | ||
2738 | while (specpdl_ptr != specpdl + count) | |
2739 | { | |
2740 | --specpdl_ptr; | |
2741 | if (specpdl_ptr->func != 0) | |
2742 | (*specpdl_ptr->func) (specpdl_ptr->old_value); | |
2743 | /* Note that a "binding" of nil is really an unwind protect, | |
2744 | so in that case the "old value" is a list of forms to evaluate. */ | |
265a9e55 | 2745 | else if (NILP (specpdl_ptr->symbol)) |
db9f0278 JB |
2746 | Fprogn (specpdl_ptr->old_value); |
2747 | else | |
ab07bca0 | 2748 | set_internal (specpdl_ptr->symbol, specpdl_ptr->old_value, 1); |
db9f0278 | 2749 | } |
265a9e55 | 2750 | if (NILP (Vquit_flag) && quitf) Vquit_flag = Qt; |
db9f0278 JB |
2751 | |
2752 | UNGCPRO; | |
2753 | ||
2754 | return value; | |
2755 | } | |
2756 | \f | |
2757 | #if 0 | |
2758 | ||
2759 | /* Get the value of symbol's global binding, even if that binding | |
2760 | is not now dynamically visible. */ | |
2761 | ||
2762 | Lisp_Object | |
2763 | top_level_value (symbol) | |
2764 | Lisp_Object symbol; | |
2765 | { | |
2766 | register struct specbinding *ptr = specpdl; | |
2767 | ||
2768 | CHECK_SYMBOL (symbol, 0); | |
2769 | for (; ptr != specpdl_ptr; ptr++) | |
2770 | { | |
2771 | if (EQ (ptr->symbol, symbol)) | |
2772 | return ptr->old_value; | |
2773 | } | |
2774 | return Fsymbol_value (symbol); | |
2775 | } | |
2776 | ||
2777 | Lisp_Object | |
2778 | top_level_set (symbol, newval) | |
2779 | Lisp_Object symbol, newval; | |
2780 | { | |
2781 | register struct specbinding *ptr = specpdl; | |
2782 | ||
2783 | CHECK_SYMBOL (symbol, 0); | |
2784 | for (; ptr != specpdl_ptr; ptr++) | |
2785 | { | |
2786 | if (EQ (ptr->symbol, symbol)) | |
2787 | { | |
2788 | ptr->old_value = newval; | |
2789 | return newval; | |
2790 | } | |
2791 | } | |
2792 | return Fset (symbol, newval); | |
2793 | } | |
2794 | ||
2795 | #endif /* 0 */ | |
2796 | \f | |
2797 | DEFUN ("backtrace-debug", Fbacktrace_debug, Sbacktrace_debug, 2, 2, 0, | |
2798 | "Set the debug-on-exit flag of eval frame LEVEL levels down to FLAG.\n\ | |
2799 | The debugger is entered when that frame exits, if the flag is non-nil.") | |
2800 | (level, flag) | |
2801 | Lisp_Object level, flag; | |
2802 | { | |
2803 | register struct backtrace *backlist = backtrace_list; | |
2804 | register int i; | |
2805 | ||
2806 | CHECK_NUMBER (level, 0); | |
2807 | ||
2808 | for (i = 0; backlist && i < XINT (level); i++) | |
2809 | { | |
2810 | backlist = backlist->next; | |
2811 | } | |
2812 | ||
2813 | if (backlist) | |
265a9e55 | 2814 | backlist->debug_on_exit = !NILP (flag); |
db9f0278 JB |
2815 | |
2816 | return flag; | |
2817 | } | |
2818 | ||
2819 | DEFUN ("backtrace", Fbacktrace, Sbacktrace, 0, 0, "", | |
2820 | "Print a trace of Lisp function calls currently active.\n\ | |
2821 | Output stream used is value of `standard-output'.") | |
2822 | () | |
2823 | { | |
2824 | register struct backtrace *backlist = backtrace_list; | |
2825 | register int i; | |
2826 | Lisp_Object tail; | |
2827 | Lisp_Object tem; | |
2828 | extern Lisp_Object Vprint_level; | |
2829 | struct gcpro gcpro1; | |
2830 | ||
a631e24c | 2831 | XSETFASTINT (Vprint_level, 3); |
db9f0278 JB |
2832 | |
2833 | tail = Qnil; | |
2834 | GCPRO1 (tail); | |
2835 | ||
2836 | while (backlist) | |
2837 | { | |
2838 | write_string (backlist->debug_on_exit ? "* " : " ", 2); | |
2839 | if (backlist->nargs == UNEVALLED) | |
2840 | { | |
2841 | Fprin1 (Fcons (*backlist->function, *backlist->args), Qnil); | |
b6703b02 | 2842 | write_string ("\n", -1); |
db9f0278 JB |
2843 | } |
2844 | else | |
2845 | { | |
2846 | tem = *backlist->function; | |
2847 | Fprin1 (tem, Qnil); /* This can QUIT */ | |
2848 | write_string ("(", -1); | |
2849 | if (backlist->nargs == MANY) | |
2850 | { | |
2851 | for (tail = *backlist->args, i = 0; | |
265a9e55 | 2852 | !NILP (tail); |
db9f0278 JB |
2853 | tail = Fcdr (tail), i++) |
2854 | { | |
2855 | if (i) write_string (" ", -1); | |
2856 | Fprin1 (Fcar (tail), Qnil); | |
2857 | } | |
2858 | } | |
2859 | else | |
2860 | { | |
2861 | for (i = 0; i < backlist->nargs; i++) | |
2862 | { | |
2863 | if (i) write_string (" ", -1); | |
2864 | Fprin1 (backlist->args[i], Qnil); | |
2865 | } | |
2866 | } | |
b6703b02 | 2867 | write_string (")\n", -1); |
db9f0278 | 2868 | } |
db9f0278 JB |
2869 | backlist = backlist->next; |
2870 | } | |
2871 | ||
2872 | Vprint_level = Qnil; | |
2873 | UNGCPRO; | |
2874 | return Qnil; | |
2875 | } | |
2876 | ||
2877 | DEFUN ("backtrace-frame", Fbacktrace_frame, Sbacktrace_frame, 1, 1, "", | |
79e8bfbf | 2878 | "Return the function and arguments NFRAMES up from current execution point.\n\ |
db9f0278 JB |
2879 | If that frame has not evaluated the arguments yet (or is a special form),\n\ |
2880 | the value is (nil FUNCTION ARG-FORMS...).\n\ | |
2881 | If that frame has evaluated its arguments and called its function already,\n\ | |
2882 | the value is (t FUNCTION ARG-VALUES...).\n\ | |
2883 | A &rest arg is represented as the tail of the list ARG-VALUES.\n\ | |
2884 | FUNCTION is whatever was supplied as car of evaluated list,\n\ | |
2885 | or a lambda expression for macro calls.\n\ | |
79e8bfbf | 2886 | If NFRAMES is more than the number of frames, the value is nil.") |
db9f0278 JB |
2887 | (nframes) |
2888 | Lisp_Object nframes; | |
2889 | { | |
2890 | register struct backtrace *backlist = backtrace_list; | |
2891 | register int i; | |
2892 | Lisp_Object tem; | |
2893 | ||
2894 | CHECK_NATNUM (nframes, 0); | |
2895 | ||
2896 | /* Find the frame requested. */ | |
b6703b02 | 2897 | for (i = 0; backlist && i < XFASTINT (nframes); i++) |
db9f0278 JB |
2898 | backlist = backlist->next; |
2899 | ||
2900 | if (!backlist) | |
2901 | return Qnil; | |
2902 | if (backlist->nargs == UNEVALLED) | |
2903 | return Fcons (Qnil, Fcons (*backlist->function, *backlist->args)); | |
2904 | else | |
2905 | { | |
2906 | if (backlist->nargs == MANY) | |
2907 | tem = *backlist->args; | |
2908 | else | |
2909 | tem = Flist (backlist->nargs, backlist->args); | |
2910 | ||
2911 | return Fcons (Qt, Fcons (*backlist->function, tem)); | |
2912 | } | |
2913 | } | |
2914 | \f | |
dfcf069d | 2915 | void |
db9f0278 JB |
2916 | syms_of_eval () |
2917 | { | |
2918 | DEFVAR_INT ("max-specpdl-size", &max_specpdl_size, | |
7eaada67 RS |
2919 | "*Limit on number of Lisp variable bindings & unwind-protects.\n\ |
2920 | If Lisp code tries to make more than this many at once,\n\ | |
2921 | an error is signaled."); | |
db9f0278 JB |
2922 | |
2923 | DEFVAR_INT ("max-lisp-eval-depth", &max_lisp_eval_depth, | |
7eaada67 | 2924 | "*Limit on depth in `eval', `apply' and `funcall' before error.\n\ |
db9f0278 JB |
2925 | This limit is to catch infinite recursions for you before they cause\n\ |
2926 | actual stack overflow in C, which would be fatal for Emacs.\n\ | |
2927 | You can safely make it considerably larger than its default value,\n\ | |
2928 | if that proves inconveniently small."); | |
2929 | ||
2930 | DEFVAR_LISP ("quit-flag", &Vquit_flag, | |
2931 | "Non-nil causes `eval' to abort, unless `inhibit-quit' is non-nil.\n\ | |
d0b68896 | 2932 | Typing C-g sets `quit-flag' non-nil, regardless of `inhibit-quit'."); |
db9f0278 JB |
2933 | Vquit_flag = Qnil; |
2934 | ||
2935 | DEFVAR_LISP ("inhibit-quit", &Vinhibit_quit, | |
2936 | "Non-nil inhibits C-g quitting from happening immediately.\n\ | |
2937 | Note that `quit-flag' will still be set by typing C-g,\n\ | |
690337b7 | 2938 | so a quit will be signaled as soon as `inhibit-quit' is nil.\n\ |
db9f0278 JB |
2939 | To prevent this happening, set `quit-flag' to nil\n\ |
2940 | before making `inhibit-quit' nil."); | |
2941 | Vinhibit_quit = Qnil; | |
2942 | ||
ad236261 JB |
2943 | Qinhibit_quit = intern ("inhibit-quit"); |
2944 | staticpro (&Qinhibit_quit); | |
2945 | ||
db9f0278 JB |
2946 | Qautoload = intern ("autoload"); |
2947 | staticpro (&Qautoload); | |
2948 | ||
2949 | Qdebug_on_error = intern ("debug-on-error"); | |
2950 | staticpro (&Qdebug_on_error); | |
2951 | ||
2952 | Qmacro = intern ("macro"); | |
2953 | staticpro (&Qmacro); | |
2954 | ||
2955 | /* Note that the process handling also uses Qexit, but we don't want | |
2956 | to staticpro it twice, so we just do it here. */ | |
2957 | Qexit = intern ("exit"); | |
2958 | staticpro (&Qexit); | |
2959 | ||
2960 | Qinteractive = intern ("interactive"); | |
2961 | staticpro (&Qinteractive); | |
2962 | ||
2963 | Qcommandp = intern ("commandp"); | |
2964 | staticpro (&Qcommandp); | |
2965 | ||
2966 | Qdefun = intern ("defun"); | |
2967 | staticpro (&Qdefun); | |
2968 | ||
2969 | Qand_rest = intern ("&rest"); | |
2970 | staticpro (&Qand_rest); | |
2971 | ||
2972 | Qand_optional = intern ("&optional"); | |
2973 | staticpro (&Qand_optional); | |
2974 | ||
128c0f66 | 2975 | DEFVAR_LISP ("stack-trace-on-error", &Vstack_trace_on_error, |
db9f0278 | 2976 | "*Non-nil means automatically display a backtrace buffer\n\ |
128c0f66 RM |
2977 | after any error that is handled by the editor command loop.\n\ |
2978 | If the value is a list, an error only means to display a backtrace\n\ | |
2979 | if one of its condition symbols appears in the list."); | |
2980 | Vstack_trace_on_error = Qnil; | |
db9f0278 | 2981 | |
128c0f66 | 2982 | DEFVAR_LISP ("debug-on-error", &Vdebug_on_error, |
db9f0278 JB |
2983 | "*Non-nil means enter debugger if an error is signaled.\n\ |
2984 | Does not apply to errors handled by `condition-case'.\n\ | |
128c0f66 RM |
2985 | If the value is a list, an error only means to enter the debugger\n\ |
2986 | if one of its condition symbols appears in the list.\n\ | |
db9f0278 | 2987 | See also variable `debug-on-quit'."); |
128c0f66 | 2988 | Vdebug_on_error = Qnil; |
db9f0278 | 2989 | |
fc950e09 KH |
2990 | DEFVAR_LISP ("debug-ignored-errors", &Vdebug_ignored_errors, |
2991 | "*List of errors for which the debugger should not be called.\n\ | |
2992 | Each element may be a condition-name or a regexp that matches error messages.\n\ | |
2993 | If any element applies to a given error, that error skips the debugger\n\ | |
2994 | and just returns to top level.\n\ | |
2995 | This overrides the variable `debug-on-error'.\n\ | |
2996 | It does not apply to errors handled by `condition-case'."); | |
2997 | Vdebug_ignored_errors = Qnil; | |
2998 | ||
db9f0278 | 2999 | DEFVAR_BOOL ("debug-on-quit", &debug_on_quit, |
d0b68896 | 3000 | "*Non-nil means enter debugger if quit is signaled (C-g, for example).\n\ |
1b7d8239 | 3001 | Does not apply if quit is handled by a `condition-case'."); |
db9f0278 JB |
3002 | debug_on_quit = 0; |
3003 | ||
3004 | DEFVAR_BOOL ("debug-on-next-call", &debug_on_next_call, | |
3005 | "Non-nil means enter debugger before next `eval', `apply' or `funcall'."); | |
3006 | ||
3007 | DEFVAR_LISP ("debugger", &Vdebugger, | |
3008 | "Function to call to invoke debugger.\n\ | |
3009 | If due to frame exit, args are `exit' and the value being returned;\n\ | |
3010 | this function's value will be returned instead of that.\n\ | |
3011 | If due to error, args are `error' and a list of the args to `signal'.\n\ | |
3012 | If due to `apply' or `funcall' entry, one arg, `lambda'.\n\ | |
3013 | If due to `eval' entry, one arg, t."); | |
3014 | Vdebugger = Qnil; | |
3015 | ||
61ede770 RS |
3016 | DEFVAR_LISP ("signal-hook-function", &Vsignal_hook_function, |
3017 | "If non-nil, this is a function for `signal' to call.\n\ | |
3018 | It receives the same arguments that `signal' was given.\n\ | |
3019 | The Edebug package uses this to regain control."); | |
3020 | Vsignal_hook_function = Qnil; | |
3021 | ||
db9f0278 JB |
3022 | Qmocklisp_arguments = intern ("mocklisp-arguments"); |
3023 | staticpro (&Qmocklisp_arguments); | |
3024 | DEFVAR_LISP ("mocklisp-arguments", &Vmocklisp_arguments, | |
3025 | "While in a mocklisp function, the list of its unevaluated args."); | |
3026 | Vmocklisp_arguments = Qt; | |
3027 | ||
57a6e758 | 3028 | DEFVAR_LISP ("debug-on-signal", &Vdebug_on_signal, |
61ede770 RS |
3029 | "*Non-nil means call the debugger regardless of condition handlers.\n\ |
3030 | Note that `debug-on-error', `debug-on-quit' and friends\n\ | |
3031 | still determine whether to handle the particular condition."); | |
57a6e758 | 3032 | Vdebug_on_signal = Qnil; |
61ede770 | 3033 | |
6e6e9f08 RS |
3034 | Vrun_hooks = intern ("run-hooks"); |
3035 | staticpro (&Vrun_hooks); | |
db9f0278 JB |
3036 | |
3037 | staticpro (&Vautoload_queue); | |
3038 | Vautoload_queue = Qnil; | |
3039 | ||
3040 | defsubr (&Sor); | |
3041 | defsubr (&Sand); | |
3042 | defsubr (&Sif); | |
3043 | defsubr (&Scond); | |
3044 | defsubr (&Sprogn); | |
3045 | defsubr (&Sprog1); | |
3046 | defsubr (&Sprog2); | |
3047 | defsubr (&Ssetq); | |
3048 | defsubr (&Squote); | |
3049 | defsubr (&Sfunction); | |
3050 | defsubr (&Sdefun); | |
3051 | defsubr (&Sdefmacro); | |
3052 | defsubr (&Sdefvar); | |
3053 | defsubr (&Sdefconst); | |
3054 | defsubr (&Suser_variable_p); | |
3055 | defsubr (&Slet); | |
3056 | defsubr (&SletX); | |
3057 | defsubr (&Swhile); | |
3058 | defsubr (&Smacroexpand); | |
3059 | defsubr (&Scatch); | |
3060 | defsubr (&Sthrow); | |
3061 | defsubr (&Sunwind_protect); | |
3062 | defsubr (&Scondition_case); | |
3063 | defsubr (&Ssignal); | |
3064 | defsubr (&Sinteractive_p); | |
3065 | defsubr (&Scommandp); | |
3066 | defsubr (&Sautoload); | |
3067 | defsubr (&Seval); | |
3068 | defsubr (&Sapply); | |
3069 | defsubr (&Sfuncall); | |
ff936e53 SM |
3070 | defsubr (&Srun_hooks); |
3071 | defsubr (&Srun_hook_with_args); | |
3072 | defsubr (&Srun_hook_with_args_until_success); | |
3073 | defsubr (&Srun_hook_with_args_until_failure); | |
661c7d6e | 3074 | defsubr (&Sfetch_bytecode); |
db9f0278 JB |
3075 | defsubr (&Sbacktrace_debug); |
3076 | defsubr (&Sbacktrace); | |
3077 | defsubr (&Sbacktrace_frame); | |
3078 | } |