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db9f0278 | 1 | /* Evaluator for GNU Emacs Lisp interpreter. |
f4cfd81a | 2 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1999, 2000, 2001, |
114f9c96 | 3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
8cabe764 | 4 | Free Software Foundation, Inc. |
db9f0278 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
db9f0278 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
db9f0278 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
db9f0278 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
d7306fe6 | 23 | #include <setjmp.h> |
db9f0278 | 24 | #include "lisp.h" |
9ac0d9e0 | 25 | #include "blockinput.h" |
db9f0278 | 26 | #include "commands.h" |
1f98fa48 | 27 | #include "keyboard.h" |
3648c842 | 28 | #include "dispextern.h" |
94b612ad | 29 | #include "frame.h" /* For XFRAME. */ |
db9f0278 | 30 | |
b70e1a2b SM |
31 | #if HAVE_X_WINDOWS |
32 | #include "xterm.h" | |
33 | #endif | |
34 | ||
db9f0278 JB |
35 | /* This definition is duplicated in alloc.c and keyboard.c */ |
36 | /* Putting it in lisp.h makes cc bomb out! */ | |
37 | ||
38 | struct backtrace | |
4c576a83 GM |
39 | { |
40 | struct backtrace *next; | |
41 | Lisp_Object *function; | |
42 | Lisp_Object *args; /* Points to vector of args. */ | |
43 | int nargs; /* Length of vector. | |
daa37602 JB |
44 | If nargs is UNEVALLED, args points to slot holding |
45 | list of unevalled args */ | |
4c576a83 GM |
46 | char evalargs; |
47 | /* Nonzero means call value of debugger when done with this operation. */ | |
48 | char debug_on_exit; | |
49 | }; | |
db9f0278 JB |
50 | |
51 | struct backtrace *backtrace_list; | |
52 | ||
db9f0278 JB |
53 | struct catchtag *catchlist; |
54 | ||
15934ffa RS |
55 | #ifdef DEBUG_GCPRO |
56 | /* Count levels of GCPRO to detect failure to UNGCPRO. */ | |
57 | int gcpro_level; | |
58 | #endif | |
59 | ||
6fd797f5 | 60 | Lisp_Object Qautoload, Qmacro, Qexit, Qinteractive, Qcommandp, Qdefun; |
ad236261 | 61 | Lisp_Object Qinhibit_quit, Vinhibit_quit, Vquit_flag; |
db9f0278 JB |
62 | Lisp_Object Qand_rest, Qand_optional; |
63 | Lisp_Object Qdebug_on_error; | |
d6edd563 | 64 | Lisp_Object Qdeclare; |
f01cbfdd | 65 | Lisp_Object Qdebug; |
2b9aa051 | 66 | extern Lisp_Object Qinteractive_form; |
db9f0278 | 67 | |
6e6e9f08 RS |
68 | /* This holds either the symbol `run-hooks' or nil. |
69 | It is nil at an early stage of startup, and when Emacs | |
70 | is shutting down. */ | |
4c576a83 | 71 | |
db9f0278 JB |
72 | Lisp_Object Vrun_hooks; |
73 | ||
74 | /* Non-nil means record all fset's and provide's, to be undone | |
75 | if the file being autoloaded is not fully loaded. | |
76 | They are recorded by being consed onto the front of Vautoload_queue: | |
47b82df9 | 77 | (FUN . ODEF) for a defun, (0 . OFEATURES) for a provide. */ |
db9f0278 JB |
78 | |
79 | Lisp_Object Vautoload_queue; | |
80 | ||
81 | /* Current number of specbindings allocated in specpdl. */ | |
4c576a83 | 82 | |
db9f0278 JB |
83 | int specpdl_size; |
84 | ||
85 | /* Pointer to beginning of specpdl. */ | |
4c576a83 | 86 | |
db9f0278 JB |
87 | struct specbinding *specpdl; |
88 | ||
89 | /* Pointer to first unused element in specpdl. */ | |
4c576a83 | 90 | |
ab837828 | 91 | struct specbinding *specpdl_ptr; |
db9f0278 JB |
92 | |
93 | /* Maximum size allowed for specpdl allocation */ | |
4c576a83 | 94 | |
31ade731 | 95 | EMACS_INT max_specpdl_size; |
db9f0278 JB |
96 | |
97 | /* Depth in Lisp evaluations and function calls. */ | |
4c576a83 | 98 | |
db9f0278 JB |
99 | int lisp_eval_depth; |
100 | ||
101 | /* Maximum allowed depth in Lisp evaluations and function calls. */ | |
4c576a83 | 102 | |
31ade731 | 103 | EMACS_INT max_lisp_eval_depth; |
db9f0278 JB |
104 | |
105 | /* Nonzero means enter debugger before next function call */ | |
4c576a83 | 106 | |
db9f0278 JB |
107 | int debug_on_next_call; |
108 | ||
1b1acc13 | 109 | /* Non-zero means debugger may continue. This is zero when the |
556d7314 GM |
110 | debugger is called during redisplay, where it might not be safe to |
111 | continue the interrupted redisplay. */ | |
112 | ||
113 | int debugger_may_continue; | |
114 | ||
128c0f66 | 115 | /* List of conditions (non-nil atom means all) which cause a backtrace |
4de86b16 | 116 | if an error is handled by the command loop's error handler. */ |
4c576a83 | 117 | |
128c0f66 | 118 | Lisp_Object Vstack_trace_on_error; |
db9f0278 | 119 | |
128c0f66 | 120 | /* List of conditions (non-nil atom means all) which enter the debugger |
4de86b16 | 121 | if an error is handled by the command loop's error handler. */ |
4c576a83 | 122 | |
128c0f66 | 123 | Lisp_Object Vdebug_on_error; |
db9f0278 | 124 | |
fc950e09 | 125 | /* List of conditions and regexps specifying error messages which |
1b1acc13 | 126 | do not enter the debugger even if Vdebug_on_error says they should. */ |
4c576a83 | 127 | |
fc950e09 KH |
128 | Lisp_Object Vdebug_ignored_errors; |
129 | ||
61ede770 | 130 | /* Non-nil means call the debugger even if the error will be handled. */ |
4c576a83 | 131 | |
57a6e758 | 132 | Lisp_Object Vdebug_on_signal; |
61ede770 RS |
133 | |
134 | /* Hook for edebug to use. */ | |
4c576a83 | 135 | |
61ede770 RS |
136 | Lisp_Object Vsignal_hook_function; |
137 | ||
db9f0278 | 138 | /* Nonzero means enter debugger if a quit signal |
128c0f66 | 139 | is handled by the command loop's error handler. */ |
4c576a83 | 140 | |
db9f0278 JB |
141 | int debug_on_quit; |
142 | ||
be857679 | 143 | /* The value of num_nonmacro_input_events as of the last time we |
82da7701 | 144 | started to enter the debugger. If we decide to enter the debugger |
be857679 | 145 | again when this is still equal to num_nonmacro_input_events, then we |
82da7701 JB |
146 | know that the debugger itself has an error, and we should just |
147 | signal the error instead of entering an infinite loop of debugger | |
148 | invocations. */ | |
4c576a83 | 149 | |
82da7701 | 150 | int when_entered_debugger; |
db9f0278 JB |
151 | |
152 | Lisp_Object Vdebugger; | |
153 | ||
a2ff3819 GM |
154 | /* The function from which the last `signal' was called. Set in |
155 | Fsignal. */ | |
156 | ||
157 | Lisp_Object Vsignaling_function; | |
158 | ||
4c576a83 GM |
159 | /* Set to non-zero while processing X events. Checked in Feval to |
160 | make sure the Lisp interpreter isn't called from a signal handler, | |
161 | which is unsafe because the interpreter isn't reentrant. */ | |
162 | ||
163 | int handling_signal; | |
164 | ||
d6edd563 GM |
165 | /* Function to process declarations in defmacro forms. */ |
166 | ||
167 | Lisp_Object Vmacro_declaration_function; | |
168 | ||
873759d5 | 169 | extern Lisp_Object Qrisky_local_variable; |
d6edd563 | 170 | |
1283140e RS |
171 | extern Lisp_Object Qfunction; |
172 | ||
2901f1d1 | 173 | static Lisp_Object funcall_lambda P_ ((Lisp_Object, int, Lisp_Object*)); |
2381d38d | 174 | static void unwind_to_catch P_ ((struct catchtag *, Lisp_Object)) NO_RETURN; |
eaa1e5ed EZ |
175 | |
176 | #if __GNUC__ | |
177 | /* "gcc -O3" enables automatic function inlining, which optimizes out | |
178 | the arguments for the invocations of these functions, whereas they | |
179 | expect these values on the stack. */ | |
180 | Lisp_Object apply1 () __attribute__((noinline)); | |
181 | Lisp_Object call2 () __attribute__((noinline)); | |
182 | #endif | |
873759d5 | 183 | \f |
dfcf069d | 184 | void |
db9f0278 JB |
185 | init_eval_once () |
186 | { | |
187 | specpdl_size = 50; | |
716acfce | 188 | specpdl = (struct specbinding *) xmalloc (specpdl_size * sizeof (struct specbinding)); |
270e8074 | 189 | specpdl_ptr = specpdl; |
6588243d | 190 | /* Don't forget to update docs (lispref node "Local Variables"). */ |
a4547405 | 191 | max_specpdl_size = 1000; |
f983eb8a | 192 | max_lisp_eval_depth = 500; |
34d470ba RS |
193 | |
194 | Vrun_hooks = Qnil; | |
db9f0278 JB |
195 | } |
196 | ||
dfcf069d | 197 | void |
db9f0278 JB |
198 | init_eval () |
199 | { | |
200 | specpdl_ptr = specpdl; | |
201 | catchlist = 0; | |
202 | handlerlist = 0; | |
203 | backtrace_list = 0; | |
204 | Vquit_flag = Qnil; | |
205 | debug_on_next_call = 0; | |
206 | lisp_eval_depth = 0; | |
87e21fbd | 207 | #ifdef DEBUG_GCPRO |
15934ffa | 208 | gcpro_level = 0; |
87e21fbd | 209 | #endif |
be857679 | 210 | /* This is less than the initial value of num_nonmacro_input_events. */ |
b5b911f9 | 211 | when_entered_debugger = -1; |
db9f0278 JB |
212 | } |
213 | ||
9f5903bb RS |
214 | /* unwind-protect function used by call_debugger. */ |
215 | ||
216 | static Lisp_Object | |
217 | restore_stack_limits (data) | |
218 | Lisp_Object data; | |
219 | { | |
220 | max_specpdl_size = XINT (XCAR (data)); | |
221 | max_lisp_eval_depth = XINT (XCDR (data)); | |
538f78c3 | 222 | return Qnil; |
9f5903bb RS |
223 | } |
224 | ||
225 | /* Call the Lisp debugger, giving it argument ARG. */ | |
226 | ||
db9f0278 JB |
227 | Lisp_Object |
228 | call_debugger (arg) | |
229 | Lisp_Object arg; | |
230 | { | |
3648c842 | 231 | int debug_while_redisplaying; |
aed13378 | 232 | int count = SPECPDL_INDEX (); |
3648c842 | 233 | Lisp_Object val; |
9f5903bb | 234 | int old_max = max_specpdl_size; |
177c0ea7 | 235 | |
9f5903bb RS |
236 | /* Temporarily bump up the stack limits, |
237 | so the debugger won't run out of stack. */ | |
177c0ea7 | 238 | |
9f5903bb RS |
239 | max_specpdl_size += 1; |
240 | record_unwind_protect (restore_stack_limits, | |
241 | Fcons (make_number (old_max), | |
242 | make_number (max_lisp_eval_depth))); | |
243 | max_specpdl_size = old_max; | |
244 | ||
245 | if (lisp_eval_depth + 40 > max_lisp_eval_depth) | |
246 | max_lisp_eval_depth = lisp_eval_depth + 40; | |
247 | ||
248 | if (SPECPDL_INDEX () + 100 > max_specpdl_size) | |
249 | max_specpdl_size = SPECPDL_INDEX () + 100; | |
177c0ea7 | 250 | |
d148e14d | 251 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
252 | if (display_hourglass_p) |
253 | cancel_hourglass (); | |
237c23b0 GM |
254 | #endif |
255 | ||
db9f0278 | 256 | debug_on_next_call = 0; |
be857679 | 257 | when_entered_debugger = num_nonmacro_input_events; |
3648c842 GM |
258 | |
259 | /* Resetting redisplaying_p to 0 makes sure that debug output is | |
260 | displayed if the debugger is invoked during redisplay. */ | |
261 | debug_while_redisplaying = redisplaying_p; | |
262 | redisplaying_p = 0; | |
556d7314 GM |
263 | specbind (intern ("debugger-may-continue"), |
264 | debug_while_redisplaying ? Qnil : Qt); | |
8efb6cc7 | 265 | specbind (Qinhibit_redisplay, Qnil); |
9f5903bb | 266 | specbind (Qdebug_on_error, Qnil); |
9db6f6b4 GM |
267 | |
268 | #if 0 /* Binding this prevents execution of Lisp code during | |
269 | redisplay, which necessarily leads to display problems. */ | |
8efb6cc7 | 270 | specbind (Qinhibit_eval_during_redisplay, Qt); |
9db6f6b4 | 271 | #endif |
177c0ea7 | 272 | |
3648c842 GM |
273 | val = apply1 (Vdebugger, arg); |
274 | ||
275 | /* Interrupting redisplay and resuming it later is not safe under | |
276 | all circumstances. So, when the debugger returns, abort the | |
1b1acc13 | 277 | interrupted redisplay by going back to the top-level. */ |
3648c842 GM |
278 | if (debug_while_redisplaying) |
279 | Ftop_level (); | |
280 | ||
556d7314 | 281 | return unbind_to (count, val); |
db9f0278 JB |
282 | } |
283 | ||
dfcf069d | 284 | void |
db9f0278 JB |
285 | do_debug_on_call (code) |
286 | Lisp_Object code; | |
287 | { | |
288 | debug_on_next_call = 0; | |
289 | backtrace_list->debug_on_exit = 1; | |
290 | call_debugger (Fcons (code, Qnil)); | |
291 | } | |
292 | \f | |
293 | /* NOTE!!! Every function that can call EVAL must protect its args | |
294 | and temporaries from garbage collection while it needs them. | |
295 | The definition of `For' shows what you have to do. */ | |
296 | ||
297 | DEFUN ("or", For, Sor, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
298 | doc: /* Eval args until one of them yields non-nil, then return that value. |
299 | The remaining args are not evalled at all. | |
300 | If all args return nil, return nil. | |
533eb34b | 301 | usage: (or CONDITIONS...) */) |
9dbc9081 | 302 | (args) |
db9f0278 JB |
303 | Lisp_Object args; |
304 | { | |
e509f168 | 305 | register Lisp_Object val = Qnil; |
db9f0278 JB |
306 | struct gcpro gcpro1; |
307 | ||
e509f168 | 308 | GCPRO1 (args); |
db9f0278 | 309 | |
e509f168 | 310 | while (CONSP (args)) |
db9f0278 | 311 | { |
e509f168 | 312 | val = Feval (XCAR (args)); |
265a9e55 | 313 | if (!NILP (val)) |
db9f0278 | 314 | break; |
e509f168 | 315 | args = XCDR (args); |
db9f0278 | 316 | } |
db9f0278 JB |
317 | |
318 | UNGCPRO; | |
319 | return val; | |
320 | } | |
321 | ||
322 | DEFUN ("and", Fand, Sand, 0, UNEVALLED, 0, | |
b8de5714 | 323 | doc: /* Eval args until one of them yields nil, then return nil. |
9dbc9081 PJ |
324 | The remaining args are not evalled at all. |
325 | If no arg yields nil, return the last arg's value. | |
533eb34b | 326 | usage: (and CONDITIONS...) */) |
9dbc9081 | 327 | (args) |
db9f0278 JB |
328 | Lisp_Object args; |
329 | { | |
e509f168 | 330 | register Lisp_Object val = Qt; |
db9f0278 JB |
331 | struct gcpro gcpro1; |
332 | ||
e509f168 | 333 | GCPRO1 (args); |
db9f0278 | 334 | |
e509f168 | 335 | while (CONSP (args)) |
db9f0278 | 336 | { |
e509f168 | 337 | val = Feval (XCAR (args)); |
265a9e55 | 338 | if (NILP (val)) |
db9f0278 | 339 | break; |
e509f168 | 340 | args = XCDR (args); |
db9f0278 | 341 | } |
db9f0278 JB |
342 | |
343 | UNGCPRO; | |
344 | return val; | |
345 | } | |
346 | ||
347 | DEFUN ("if", Fif, Sif, 2, UNEVALLED, 0, | |
b8de5714 | 348 | doc: /* If COND yields non-nil, do THEN, else do ELSE... |
9dbc9081 PJ |
349 | Returns the value of THEN or the value of the last of the ELSE's. |
350 | THEN must be one expression, but ELSE... can be zero or more expressions. | |
351 | If COND yields nil, and there are no ELSE's, the value is nil. | |
7a25dc6d | 352 | usage: (if COND THEN ELSE...) */) |
9dbc9081 | 353 | (args) |
db9f0278 JB |
354 | Lisp_Object args; |
355 | { | |
356 | register Lisp_Object cond; | |
357 | struct gcpro gcpro1; | |
358 | ||
359 | GCPRO1 (args); | |
360 | cond = Feval (Fcar (args)); | |
361 | UNGCPRO; | |
362 | ||
265a9e55 | 363 | if (!NILP (cond)) |
db9f0278 JB |
364 | return Feval (Fcar (Fcdr (args))); |
365 | return Fprogn (Fcdr (Fcdr (args))); | |
366 | } | |
367 | ||
368 | DEFUN ("cond", Fcond, Scond, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
369 | doc: /* Try each clause until one succeeds. |
370 | Each clause looks like (CONDITION BODY...). CONDITION is evaluated | |
371 | and, if the value is non-nil, this clause succeeds: | |
372 | then the expressions in BODY are evaluated and the last one's | |
373 | value is the value of the cond-form. | |
374 | If no clause succeeds, cond returns nil. | |
375 | If a clause has one element, as in (CONDITION), | |
376 | CONDITION's value if non-nil is returned from the cond-form. | |
7a25dc6d | 377 | usage: (cond CLAUSES...) */) |
9dbc9081 | 378 | (args) |
db9f0278 JB |
379 | Lisp_Object args; |
380 | { | |
381 | register Lisp_Object clause, val; | |
382 | struct gcpro gcpro1; | |
383 | ||
384 | val = Qnil; | |
385 | GCPRO1 (args); | |
265a9e55 | 386 | while (!NILP (args)) |
db9f0278 JB |
387 | { |
388 | clause = Fcar (args); | |
389 | val = Feval (Fcar (clause)); | |
265a9e55 | 390 | if (!NILP (val)) |
db9f0278 | 391 | { |
03699b14 KR |
392 | if (!EQ (XCDR (clause), Qnil)) |
393 | val = Fprogn (XCDR (clause)); | |
db9f0278 JB |
394 | break; |
395 | } | |
03699b14 | 396 | args = XCDR (args); |
db9f0278 JB |
397 | } |
398 | UNGCPRO; | |
399 | ||
400 | return val; | |
401 | } | |
402 | ||
403 | DEFUN ("progn", Fprogn, Sprogn, 0, UNEVALLED, 0, | |
9dbc9081 | 404 | doc: /* Eval BODY forms sequentially and return value of last one. |
5b4a1f50 | 405 | usage: (progn BODY...) */) |
9dbc9081 | 406 | (args) |
db9f0278 JB |
407 | Lisp_Object args; |
408 | { | |
e509f168 | 409 | register Lisp_Object val = Qnil; |
db9f0278 JB |
410 | struct gcpro gcpro1; |
411 | ||
e509f168 | 412 | GCPRO1 (args); |
db9f0278 | 413 | |
e509f168 | 414 | while (CONSP (args)) |
db9f0278 | 415 | { |
e509f168 SM |
416 | val = Feval (XCAR (args)); |
417 | args = XCDR (args); | |
db9f0278 | 418 | } |
db9f0278 JB |
419 | |
420 | UNGCPRO; | |
421 | return val; | |
422 | } | |
423 | ||
424 | DEFUN ("prog1", Fprog1, Sprog1, 1, UNEVALLED, 0, | |
bdee2ef3 | 425 | doc: /* Eval FIRST and BODY sequentially; return value from FIRST. |
9dbc9081 PJ |
426 | The value of FIRST is saved during the evaluation of the remaining args, |
427 | whose values are discarded. | |
7a25dc6d | 428 | usage: (prog1 FIRST BODY...) */) |
9dbc9081 | 429 | (args) |
db9f0278 JB |
430 | Lisp_Object args; |
431 | { | |
432 | Lisp_Object val; | |
433 | register Lisp_Object args_left; | |
434 | struct gcpro gcpro1, gcpro2; | |
435 | register int argnum = 0; | |
436 | ||
9ac66b45 | 437 | if (NILP (args)) |
db9f0278 JB |
438 | return Qnil; |
439 | ||
440 | args_left = args; | |
441 | val = Qnil; | |
442 | GCPRO2 (args, val); | |
443 | ||
444 | do | |
445 | { | |
446 | if (!(argnum++)) | |
447 | val = Feval (Fcar (args_left)); | |
448 | else | |
449 | Feval (Fcar (args_left)); | |
450 | args_left = Fcdr (args_left); | |
451 | } | |
265a9e55 | 452 | while (!NILP(args_left)); |
db9f0278 JB |
453 | |
454 | UNGCPRO; | |
455 | return val; | |
456 | } | |
457 | ||
458 | DEFUN ("prog2", Fprog2, Sprog2, 2, UNEVALLED, 0, | |
bdee2ef3 | 459 | doc: /* Eval FORM1, FORM2 and BODY sequentially; return value from FORM2. |
82fc29a1 JB |
460 | The value of FORM2 is saved during the evaluation of the |
461 | remaining args, whose values are discarded. | |
462 | usage: (prog2 FORM1 FORM2 BODY...) */) | |
9dbc9081 | 463 | (args) |
db9f0278 JB |
464 | Lisp_Object args; |
465 | { | |
466 | Lisp_Object val; | |
467 | register Lisp_Object args_left; | |
468 | struct gcpro gcpro1, gcpro2; | |
469 | register int argnum = -1; | |
470 | ||
471 | val = Qnil; | |
472 | ||
87d238ba | 473 | if (NILP (args)) |
db9f0278 JB |
474 | return Qnil; |
475 | ||
476 | args_left = args; | |
477 | val = Qnil; | |
478 | GCPRO2 (args, val); | |
479 | ||
480 | do | |
481 | { | |
482 | if (!(argnum++)) | |
483 | val = Feval (Fcar (args_left)); | |
484 | else | |
485 | Feval (Fcar (args_left)); | |
486 | args_left = Fcdr (args_left); | |
487 | } | |
87d238ba | 488 | while (!NILP (args_left)); |
db9f0278 JB |
489 | |
490 | UNGCPRO; | |
491 | return val; | |
492 | } | |
493 | ||
494 | DEFUN ("setq", Fsetq, Ssetq, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
495 | doc: /* Set each SYM to the value of its VAL. |
496 | The symbols SYM are variables; they are literal (not evaluated). | |
497 | The values VAL are expressions; they are evaluated. | |
498 | Thus, (setq x (1+ y)) sets `x' to the value of `(1+ y)'. | |
499 | The second VAL is not computed until after the first SYM is set, and so on; | |
500 | each VAL can use the new value of variables set earlier in the `setq'. | |
501 | The return value of the `setq' form is the value of the last VAL. | |
819586b2 | 502 | usage: (setq [SYM VAL]...) */) |
9dbc9081 | 503 | (args) |
db9f0278 JB |
504 | Lisp_Object args; |
505 | { | |
506 | register Lisp_Object args_left; | |
507 | register Lisp_Object val, sym; | |
508 | struct gcpro gcpro1; | |
509 | ||
1283140e | 510 | if (NILP (args)) |
db9f0278 JB |
511 | return Qnil; |
512 | ||
513 | args_left = args; | |
514 | GCPRO1 (args); | |
515 | ||
516 | do | |
517 | { | |
518 | val = Feval (Fcar (Fcdr (args_left))); | |
519 | sym = Fcar (args_left); | |
520 | Fset (sym, val); | |
521 | args_left = Fcdr (Fcdr (args_left)); | |
522 | } | |
265a9e55 | 523 | while (!NILP(args_left)); |
db9f0278 JB |
524 | |
525 | UNGCPRO; | |
526 | return val; | |
527 | } | |
177c0ea7 | 528 | |
db9f0278 | 529 | DEFUN ("quote", Fquote, Squote, 1, UNEVALLED, 0, |
9dbc9081 PJ |
530 | doc: /* Return the argument, without evaluating it. `(quote x)' yields `x'. |
531 | usage: (quote ARG) */) | |
532 | (args) | |
db9f0278 JB |
533 | Lisp_Object args; |
534 | { | |
1283140e RS |
535 | if (!NILP (Fcdr (args))) |
536 | xsignal2 (Qwrong_number_of_arguments, Qquote, Flength (args)); | |
db9f0278 JB |
537 | return Fcar (args); |
538 | } | |
177c0ea7 | 539 | |
db9f0278 | 540 | DEFUN ("function", Ffunction, Sfunction, 1, UNEVALLED, 0, |
9dbc9081 PJ |
541 | doc: /* Like `quote', but preferred for objects which are functions. |
542 | In byte compilation, `function' causes its argument to be compiled. | |
543 | `quote' cannot do that. | |
544 | usage: (function ARG) */) | |
545 | (args) | |
db9f0278 JB |
546 | Lisp_Object args; |
547 | { | |
1283140e RS |
548 | if (!NILP (Fcdr (args))) |
549 | xsignal2 (Qwrong_number_of_arguments, Qfunction, Flength (args)); | |
db9f0278 JB |
550 | return Fcar (args); |
551 | } | |
552 | ||
e0f331ab | 553 | |
db9f0278 | 554 | DEFUN ("interactive-p", Finteractive_p, Sinteractive_p, 0, 0, 0, |
84b17ab0 | 555 | doc: /* Return t if the containing function was run directly by user input. |
82fc29a1 JB |
556 | This means that the function was called with `call-interactively' |
557 | \(which includes being called as the binding of a key) | |
84b17ab0 | 558 | and input is currently coming from the keyboard (not a keyboard macro), |
c63df42b RS |
559 | and Emacs is not running in batch mode (`noninteractive' is nil). |
560 | ||
561 | The only known proper use of `interactive-p' is in deciding whether to | |
562 | display a helpful message, or how to display it. If you're thinking | |
563 | of using it for any other purpose, it is quite likely that you're | |
564 | making a mistake. Think: what do you want to do when the command is | |
565 | called from a keyboard macro? | |
566 | ||
84b17ab0 CY |
567 | To test whether your function was called with `call-interactively', |
568 | either (i) add an extra optional argument and give it an `interactive' | |
569 | spec that specifies non-nil unconditionally (such as \"p\"); or (ii) | |
570 | use `called-interactively-p'. */) | |
9dbc9081 | 571 | () |
db9f0278 | 572 | { |
c63df42b | 573 | return (INTERACTIVE && interactive_p (1)) ? Qt : Qnil; |
e0f331ab GM |
574 | } |
575 | ||
576 | ||
9d28c33e | 577 | DEFUN ("called-interactively-p", Fcalled_interactively_p, Scalled_interactively_p, 0, 1, 0, |
84b17ab0 | 578 | doc: /* Return t if the containing function was called by `call-interactively'. |
9d28c33e SM |
579 | If KIND is `interactive', then only return t if the call was made |
580 | interactively by the user, i.e. not in `noninteractive' mode nor | |
581 | when `executing-kbd-macro'. | |
582 | If KIND is `any', on the other hand, it will return t for any kind of | |
583 | interactive call, including being called as the binding of a key, or | |
584 | from a keyboard macro, or in `noninteractive' mode. | |
585 | ||
586 | The only known proper use of `interactive' for KIND is in deciding | |
587 | whether to display a helpful message, or how to display it. If you're | |
588 | thinking of using it for any other purpose, it is quite likely that | |
589 | you're making a mistake. Think: what do you want to do when the | |
590 | command is called from a keyboard macro? | |
84b17ab0 CY |
591 | |
592 | This function is meant for implementing advice and other | |
593 | function-modifying features. Instead of using this, it is sometimes | |
594 | cleaner to give your function an extra optional argument whose | |
595 | `interactive' spec specifies non-nil unconditionally (\"p\" is a good | |
9d28c33e SM |
596 | way to do this), or via (not (or executing-kbd-macro noninteractive)). */) |
597 | (kind) | |
598 | Lisp_Object kind; | |
c63df42b | 599 | { |
9d28c33e SM |
600 | return ((INTERACTIVE || !EQ (kind, intern ("interactive"))) |
601 | && interactive_p (1)) ? Qt : Qnil; | |
c63df42b RS |
602 | } |
603 | ||
604 | ||
605 | /* Return 1 if function in which this appears was called using | |
606 | call-interactively. | |
e0f331ab GM |
607 | |
608 | EXCLUDE_SUBRS_P non-zero means always return 0 if the function | |
609 | called is a built-in. */ | |
610 | ||
611 | int | |
612 | interactive_p (exclude_subrs_p) | |
613 | int exclude_subrs_p; | |
614 | { | |
615 | struct backtrace *btp; | |
616 | Lisp_Object fun; | |
db9f0278 | 617 | |
db9f0278 | 618 | btp = backtrace_list; |
daa37602 JB |
619 | |
620 | /* If this isn't a byte-compiled function, there may be a frame at | |
e0f331ab | 621 | the top for Finteractive_p. If so, skip it. */ |
a7f96a35 | 622 | fun = Findirect_function (*btp->function, Qnil); |
0b31741c RS |
623 | if (SUBRP (fun) && (XSUBR (fun) == &Sinteractive_p |
624 | || XSUBR (fun) == &Scalled_interactively_p)) | |
db9f0278 | 625 | btp = btp->next; |
daa37602 JB |
626 | |
627 | /* If we're running an Emacs 18-style byte-compiled function, there | |
4402a9ed RS |
628 | may be a frame for Fbytecode at the top level. In any version of |
629 | Emacs there can be Fbytecode frames for subexpressions evaluated | |
630 | inside catch and condition-case. Skip past them. | |
daa37602 | 631 | |
4402a9ed | 632 | If this isn't a byte-compiled function, then we may now be |
daa37602 | 633 | looking at several frames for special forms. Skip past them. */ |
4402a9ed RS |
634 | while (btp |
635 | && (EQ (*btp->function, Qbytecode) | |
636 | || btp->nargs == UNEVALLED)) | |
a6e3fa71 JB |
637 | btp = btp->next; |
638 | ||
daa37602 JB |
639 | /* btp now points at the frame of the innermost function that isn't |
640 | a special form, ignoring frames for Finteractive_p and/or | |
641 | Fbytecode at the top. If this frame is for a built-in function | |
642 | (such as load or eval-region) return nil. */ | |
a7f96a35 | 643 | fun = Findirect_function (*btp->function, Qnil); |
e0f331ab GM |
644 | if (exclude_subrs_p && SUBRP (fun)) |
645 | return 0; | |
177c0ea7 | 646 | |
db9f0278 JB |
647 | /* btp points to the frame of a Lisp function that called interactive-p. |
648 | Return t if that function was called interactively. */ | |
649 | if (btp && btp->next && EQ (*btp->next->function, Qcall_interactively)) | |
e0f331ab GM |
650 | return 1; |
651 | return 0; | |
db9f0278 JB |
652 | } |
653 | ||
e0f331ab | 654 | |
db9f0278 | 655 | DEFUN ("defun", Fdefun, Sdefun, 2, UNEVALLED, 0, |
9dbc9081 PJ |
656 | doc: /* Define NAME as a function. |
657 | The definition is (lambda ARGLIST [DOCSTRING] BODY...). | |
658 | See also the function `interactive'. | |
7a25dc6d | 659 | usage: (defun NAME ARGLIST [DOCSTRING] BODY...) */) |
9dbc9081 | 660 | (args) |
db9f0278 JB |
661 | Lisp_Object args; |
662 | { | |
663 | register Lisp_Object fn_name; | |
664 | register Lisp_Object defn; | |
665 | ||
666 | fn_name = Fcar (args); | |
6992a868 | 667 | CHECK_SYMBOL (fn_name); |
db9f0278 | 668 | defn = Fcons (Qlambda, Fcdr (args)); |
265a9e55 | 669 | if (!NILP (Vpurify_flag)) |
db9f0278 | 670 | defn = Fpurecopy (defn); |
f58e9f8c RS |
671 | if (CONSP (XSYMBOL (fn_name)->function) |
672 | && EQ (XCAR (XSYMBOL (fn_name)->function), Qautoload)) | |
673 | LOADHIST_ATTACH (Fcons (Qt, fn_name)); | |
db9f0278 | 674 | Ffset (fn_name, defn); |
6fd797f5 | 675 | LOADHIST_ATTACH (Fcons (Qdefun, fn_name)); |
db9f0278 JB |
676 | return fn_name; |
677 | } | |
678 | ||
679 | DEFUN ("defmacro", Fdefmacro, Sdefmacro, 2, UNEVALLED, 0, | |
9dbc9081 | 680 | doc: /* Define NAME as a macro. |
0654d6e3 RS |
681 | The actual definition looks like |
682 | (macro lambda ARGLIST [DOCSTRING] [DECL] BODY...). | |
9dbc9081 PJ |
683 | When the macro is called, as in (NAME ARGS...), |
684 | the function (lambda ARGLIST BODY...) is applied to | |
685 | the list ARGS... as it appears in the expression, | |
686 | and the result should be a form to be evaluated instead of the original. | |
0654d6e3 RS |
687 | |
688 | DECL is a declaration, optional, which can specify how to indent | |
4ba50634 JPW |
689 | calls to this macro, how Edebug should handle it, and which argument |
690 | should be treated as documentation. It looks like this: | |
0654d6e3 RS |
691 | (declare SPECS...) |
692 | The elements can look like this: | |
693 | (indent INDENT) | |
694 | Set NAME's `lisp-indent-function' property to INDENT. | |
695 | ||
e509f168 | 696 | (debug DEBUG) |
0654d6e3 | 697 | Set NAME's `edebug-form-spec' property to DEBUG. (This is |
7d5c86e5 | 698 | equivalent to writing a `def-edebug-spec' for the macro.) |
4ba50634 JPW |
699 | |
700 | (doc-string ELT) | |
701 | Set NAME's `doc-string-elt' property to ELT. | |
702 | ||
0654d6e3 | 703 | usage: (defmacro NAME ARGLIST [DOCSTRING] [DECL] BODY...) */) |
9dbc9081 | 704 | (args) |
db9f0278 JB |
705 | Lisp_Object args; |
706 | { | |
707 | register Lisp_Object fn_name; | |
708 | register Lisp_Object defn; | |
d6edd563 | 709 | Lisp_Object lambda_list, doc, tail; |
db9f0278 JB |
710 | |
711 | fn_name = Fcar (args); | |
8e975df9 | 712 | CHECK_SYMBOL (fn_name); |
d6edd563 GM |
713 | lambda_list = Fcar (Fcdr (args)); |
714 | tail = Fcdr (Fcdr (args)); | |
715 | ||
716 | doc = Qnil; | |
717 | if (STRINGP (Fcar (tail))) | |
718 | { | |
e509f168 SM |
719 | doc = XCAR (tail); |
720 | tail = XCDR (tail); | |
d6edd563 GM |
721 | } |
722 | ||
723 | while (CONSP (Fcar (tail)) | |
724 | && EQ (Fcar (Fcar (tail)), Qdeclare)) | |
725 | { | |
726 | if (!NILP (Vmacro_declaration_function)) | |
727 | { | |
728 | struct gcpro gcpro1; | |
729 | GCPRO1 (args); | |
730 | call2 (Vmacro_declaration_function, fn_name, Fcar (tail)); | |
731 | UNGCPRO; | |
732 | } | |
177c0ea7 | 733 | |
d6edd563 GM |
734 | tail = Fcdr (tail); |
735 | } | |
736 | ||
737 | if (NILP (doc)) | |
738 | tail = Fcons (lambda_list, tail); | |
739 | else | |
740 | tail = Fcons (lambda_list, Fcons (doc, tail)); | |
741 | defn = Fcons (Qmacro, Fcons (Qlambda, tail)); | |
177c0ea7 | 742 | |
265a9e55 | 743 | if (!NILP (Vpurify_flag)) |
db9f0278 | 744 | defn = Fpurecopy (defn); |
f58e9f8c RS |
745 | if (CONSP (XSYMBOL (fn_name)->function) |
746 | && EQ (XCAR (XSYMBOL (fn_name)->function), Qautoload)) | |
747 | LOADHIST_ATTACH (Fcons (Qt, fn_name)); | |
db9f0278 | 748 | Ffset (fn_name, defn); |
6fd797f5 | 749 | LOADHIST_ATTACH (Fcons (Qdefun, fn_name)); |
db9f0278 JB |
750 | return fn_name; |
751 | } | |
752 | ||
19cebf5a | 753 | |
1848d15d | 754 | DEFUN ("defvaralias", Fdefvaralias, Sdefvaralias, 2, 3, 0, |
4a9308b8 | 755 | doc: /* Make NEW-ALIAS a variable alias for symbol BASE-VARIABLE. |
e102f0d8 | 756 | Aliased variables always have the same value; setting one sets the other. |
4a9308b8 | 757 | Third arg DOCSTRING, if non-nil, is documentation for NEW-ALIAS. If it is |
dd60787c GM |
758 | omitted or nil, NEW-ALIAS gets the documentation string of BASE-VARIABLE, |
759 | or of the variable at the end of the chain of aliases, if BASE-VARIABLE is | |
760 | itself an alias. If NEW-ALIAS is bound, and BASE-VARIABLE is not, | |
761 | then the value of BASE-VARIABLE is set to that of NEW-ALIAS. | |
4a9308b8 JB |
762 | The return value is BASE-VARIABLE. */) |
763 | (new_alias, base_variable, docstring) | |
764 | Lisp_Object new_alias, base_variable, docstring; | |
19cebf5a GM |
765 | { |
766 | struct Lisp_Symbol *sym; | |
1848d15d | 767 | |
4a9308b8 JB |
768 | CHECK_SYMBOL (new_alias); |
769 | CHECK_SYMBOL (base_variable); | |
19cebf5a | 770 | |
4a9308b8 | 771 | sym = XSYMBOL (new_alias); |
ce5b453a SM |
772 | |
773 | if (sym->constant) | |
178f2507 SM |
774 | /* Not sure why, but why not? */ |
775 | error ("Cannot make a constant an alias"); | |
ce5b453a SM |
776 | |
777 | switch (sym->redirect) | |
778 | { | |
779 | case SYMBOL_FORWARDED: | |
780 | error ("Cannot make an internal variable an alias"); | |
781 | case SYMBOL_LOCALIZED: | |
782 | error ("Don't know how to make a localized variable an alias"); | |
783 | } | |
784 | ||
dd60787c | 785 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg00834.html |
ce5b453a SM |
786 | If n_a is bound, but b_v is not, set the value of b_v to n_a, |
787 | so that old-code that affects n_a before the aliasing is setup | |
788 | still works. */ | |
789 | if (NILP (Fboundp (base_variable))) | |
94b612ad | 790 | set_internal (base_variable, find_symbol_value (new_alias), Qnil, 1); |
ce5b453a SM |
791 | |
792 | { | |
793 | struct specbinding *p; | |
794 | ||
795 | for (p = specpdl_ptr - 1; p >= specpdl; p--) | |
796 | if (p->func == NULL | |
797 | && (EQ (new_alias, | |
798 | CONSP (p->symbol) ? XCAR (p->symbol) : p->symbol))) | |
799 | error ("Don't know how to make a let-bound variable an alias"); | |
800 | } | |
801 | ||
802 | sym->redirect = SYMBOL_VARALIAS; | |
803 | SET_SYMBOL_ALIAS (sym, XSYMBOL (base_variable)); | |
4a9308b8 JB |
804 | sym->constant = SYMBOL_CONSTANT_P (base_variable); |
805 | LOADHIST_ATTACH (new_alias); | |
ce5b453a SM |
806 | /* Even if docstring is nil: remove old docstring. */ |
807 | Fput (new_alias, Qvariable_documentation, docstring); | |
1848d15d | 808 | |
4a9308b8 | 809 | return base_variable; |
19cebf5a GM |
810 | } |
811 | ||
812 | ||
db9f0278 | 813 | DEFUN ("defvar", Fdefvar, Sdefvar, 1, UNEVALLED, 0, |
29357847 | 814 | doc: /* Define SYMBOL as a variable, and return SYMBOL. |
9dbc9081 PJ |
815 | You are not required to define a variable in order to use it, |
816 | but the definition can supply documentation and an initial value | |
817 | in a way that tags can recognize. | |
818 | ||
819 | INITVALUE is evaluated, and used to set SYMBOL, only if SYMBOL's value is void. | |
820 | If SYMBOL is buffer-local, its default value is what is set; | |
821 | buffer-local values are not affected. | |
822 | INITVALUE and DOCSTRING are optional. | |
823 | If DOCSTRING starts with *, this variable is identified as a user option. | |
824 | This means that M-x set-variable recognizes it. | |
825 | See also `user-variable-p'. | |
826 | If INITVALUE is missing, SYMBOL's value is not set. | |
733f68b6 LT |
827 | |
828 | If SYMBOL has a local binding, then this form affects the local | |
829 | binding. This is usually not what you want. Thus, if you need to | |
830 | load a file defining variables, with this form or with `defconst' or | |
831 | `defcustom', you should always load that file _outside_ any bindings | |
832 | for these variables. \(`defconst' and `defcustom' behave similarly in | |
833 | this respect.) | |
2df5238c | 834 | usage: (defvar SYMBOL &optional INITVALUE DOCSTRING) */) |
9dbc9081 | 835 | (args) |
db9f0278 JB |
836 | Lisp_Object args; |
837 | { | |
a42ba017 | 838 | register Lisp_Object sym, tem, tail; |
db9f0278 JB |
839 | |
840 | sym = Fcar (args); | |
a42ba017 RS |
841 | tail = Fcdr (args); |
842 | if (!NILP (Fcdr (Fcdr (tail)))) | |
921baa95 | 843 | error ("Too many arguments"); |
a42ba017 | 844 | |
33568849 | 845 | tem = Fdefault_boundp (sym); |
a42ba017 | 846 | if (!NILP (tail)) |
db9f0278 | 847 | { |
1c9916a1 SM |
848 | if (SYMBOL_CONSTANT_P (sym)) |
849 | { | |
850 | /* For upward compatibility, allow (defvar :foo (quote :foo)). */ | |
851 | Lisp_Object tem = Fcar (tail); | |
852 | if (! (CONSP (tem) | |
853 | && EQ (XCAR (tem), Qquote) | |
854 | && CONSP (XCDR (tem)) | |
855 | && EQ (XCAR (XCDR (tem)), sym))) | |
856 | error ("Constant symbol `%s' specified in defvar", | |
857 | SDATA (SYMBOL_NAME (sym))); | |
858 | } | |
859 | ||
265a9e55 | 860 | if (NILP (tem)) |
33568849 | 861 | Fset_default (sym, Feval (Fcar (tail))); |
d0bce91e SM |
862 | else |
863 | { /* Check if there is really a global binding rather than just a let | |
864 | binding that shadows the global unboundness of the var. */ | |
b28d0d9a | 865 | volatile struct specbinding *pdl = specpdl_ptr; |
d0bce91e SM |
866 | while (--pdl >= specpdl) |
867 | { | |
868 | if (EQ (pdl->symbol, sym) && !pdl->func | |
869 | && EQ (pdl->old_value, Qunbound)) | |
870 | { | |
871 | message_with_string ("Warning: defvar ignored because %s is let-bound", | |
872 | SYMBOL_NAME (sym), 1); | |
873 | break; | |
874 | } | |
875 | } | |
876 | } | |
33568849 | 877 | tail = Fcdr (tail); |
e509f168 SM |
878 | tem = Fcar (tail); |
879 | if (!NILP (tem)) | |
33568849 | 880 | { |
33568849 SM |
881 | if (!NILP (Vpurify_flag)) |
882 | tem = Fpurecopy (tem); | |
883 | Fput (sym, Qvariable_documentation, tem); | |
884 | } | |
6fd797f5 | 885 | LOADHIST_ATTACH (sym); |
db9f0278 | 886 | } |
33568849 | 887 | else |
d7c1d0fc RS |
888 | /* Simple (defvar <var>) should not count as a definition at all. |
889 | It could get in the way of other definitions, and unloading this | |
890 | package could try to make the variable unbound. */ | |
addf35fd AS |
891 | ; |
892 | ||
db9f0278 JB |
893 | return sym; |
894 | } | |
895 | ||
896 | DEFUN ("defconst", Fdefconst, Sdefconst, 2, UNEVALLED, 0, | |
9dbc9081 PJ |
897 | doc: /* Define SYMBOL as a constant variable. |
898 | The intent is that neither programs nor users should ever change this value. | |
899 | Always sets the value of SYMBOL to the result of evalling INITVALUE. | |
900 | If SYMBOL is buffer-local, its default value is what is set; | |
901 | buffer-local values are not affected. | |
902 | DOCSTRING is optional. | |
733f68b6 LT |
903 | |
904 | If SYMBOL has a local binding, then this form sets the local binding's | |
905 | value. However, you should normally not make local bindings for | |
906 | variables defined with this form. | |
7a25dc6d | 907 | usage: (defconst SYMBOL INITVALUE [DOCSTRING]) */) |
9dbc9081 | 908 | (args) |
db9f0278 JB |
909 | Lisp_Object args; |
910 | { | |
911 | register Lisp_Object sym, tem; | |
912 | ||
913 | sym = Fcar (args); | |
a42ba017 | 914 | if (!NILP (Fcdr (Fcdr (Fcdr (args))))) |
921baa95 | 915 | error ("Too many arguments"); |
a42ba017 | 916 | |
1182a7cb DL |
917 | tem = Feval (Fcar (Fcdr (args))); |
918 | if (!NILP (Vpurify_flag)) | |
919 | tem = Fpurecopy (tem); | |
920 | Fset_default (sym, tem); | |
db9f0278 | 921 | tem = Fcar (Fcdr (Fcdr (args))); |
265a9e55 | 922 | if (!NILP (tem)) |
db9f0278 | 923 | { |
265a9e55 | 924 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
925 | tem = Fpurecopy (tem); |
926 | Fput (sym, Qvariable_documentation, tem); | |
927 | } | |
873759d5 | 928 | Fput (sym, Qrisky_local_variable, Qt); |
6fd797f5 | 929 | LOADHIST_ATTACH (sym); |
db9f0278 JB |
930 | return sym; |
931 | } | |
932 | ||
606cdb89 JB |
933 | /* Error handler used in Fuser_variable_p. */ |
934 | static Lisp_Object | |
935 | user_variable_p_eh (ignore) | |
936 | Lisp_Object ignore; | |
937 | { | |
938 | return Qnil; | |
939 | } | |
940 | ||
40a69fac SM |
941 | static Lisp_Object |
942 | lisp_indirect_variable (Lisp_Object sym) | |
943 | { | |
944 | XSETSYMBOL (sym, indirect_variable (XSYMBOL (sym))); | |
945 | return sym; | |
946 | } | |
947 | ||
db9f0278 | 948 | DEFUN ("user-variable-p", Fuser_variable_p, Suser_variable_p, 1, 1, 0, |
606cdb89 | 949 | doc: /* Return t if VARIABLE is intended to be set and modified by users. |
9dbc9081 | 950 | \(The alternative is a variable used internally in a Lisp program.) |
606cdb89 JB |
951 | A variable is a user variable if |
952 | \(1) the first character of its documentation is `*', or | |
953 | \(2) it is customizable (its property list contains a non-nil value | |
954 | of `standard-value' or `custom-autoload'), or | |
955 | \(3) it is an alias for another user variable. | |
956 | Return nil if VARIABLE is an alias and there is a loop in the | |
957 | chain of symbols. */) | |
9dbc9081 | 958 | (variable) |
db9f0278 JB |
959 | Lisp_Object variable; |
960 | { | |
961 | Lisp_Object documentation; | |
177c0ea7 | 962 | |
5e78e475 RS |
963 | if (!SYMBOLP (variable)) |
964 | return Qnil; | |
965 | ||
606cdb89 | 966 | /* If indirect and there's an alias loop, don't check anything else. */ |
ce5b453a | 967 | if (XSYMBOL (variable)->redirect == SYMBOL_VARALIAS |
40a69fac | 968 | && NILP (internal_condition_case_1 (lisp_indirect_variable, variable, |
606cdb89 JB |
969 | Qt, user_variable_p_eh))) |
970 | return Qnil; | |
971 | ||
972 | while (1) | |
973 | { | |
974 | documentation = Fget (variable, Qvariable_documentation); | |
975 | if (INTEGERP (documentation) && XINT (documentation) < 0) | |
976 | return Qt; | |
977 | if (STRINGP (documentation) | |
978 | && ((unsigned char) SREF (documentation, 0) == '*')) | |
979 | return Qt; | |
980 | /* If it is (STRING . INTEGER), a negative integer means a user variable. */ | |
981 | if (CONSP (documentation) | |
982 | && STRINGP (XCAR (documentation)) | |
983 | && INTEGERP (XCDR (documentation)) | |
984 | && XINT (XCDR (documentation)) < 0) | |
985 | return Qt; | |
986 | /* Customizable? See `custom-variable-p'. */ | |
987 | if ((!NILP (Fget (variable, intern ("standard-value")))) | |
988 | || (!NILP (Fget (variable, intern ("custom-autoload"))))) | |
989 | return Qt; | |
990 | ||
ce5b453a | 991 | if (!(XSYMBOL (variable)->redirect == SYMBOL_VARALIAS)) |
606cdb89 JB |
992 | return Qnil; |
993 | ||
994 | /* An indirect variable? Let's follow the chain. */ | |
ce5b453a | 995 | XSETSYMBOL (variable, SYMBOL_ALIAS (XSYMBOL (variable))); |
606cdb89 | 996 | } |
177c0ea7 | 997 | } |
db9f0278 JB |
998 | \f |
999 | DEFUN ("let*", FletX, SletX, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1000 | doc: /* Bind variables according to VARLIST then eval BODY. |
1001 | The value of the last form in BODY is returned. | |
1002 | Each element of VARLIST is a symbol (which is bound to nil) | |
1003 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
1004 | Each VALUEFORM can refer to the symbols already bound by this VARLIST. | |
7a25dc6d | 1005 | usage: (let* VARLIST BODY...) */) |
9dbc9081 | 1006 | (args) |
db9f0278 JB |
1007 | Lisp_Object args; |
1008 | { | |
1009 | Lisp_Object varlist, val, elt; | |
aed13378 | 1010 | int count = SPECPDL_INDEX (); |
db9f0278 JB |
1011 | struct gcpro gcpro1, gcpro2, gcpro3; |
1012 | ||
1013 | GCPRO3 (args, elt, varlist); | |
1014 | ||
1015 | varlist = Fcar (args); | |
265a9e55 | 1016 | while (!NILP (varlist)) |
db9f0278 JB |
1017 | { |
1018 | QUIT; | |
1019 | elt = Fcar (varlist); | |
90165123 | 1020 | if (SYMBOLP (elt)) |
db9f0278 | 1021 | specbind (elt, Qnil); |
08564963 | 1022 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 1023 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
1024 | else |
1025 | { | |
1026 | val = Feval (Fcar (Fcdr (elt))); | |
1027 | specbind (Fcar (elt), val); | |
1028 | } | |
1029 | varlist = Fcdr (varlist); | |
1030 | } | |
1031 | UNGCPRO; | |
1032 | val = Fprogn (Fcdr (args)); | |
1033 | return unbind_to (count, val); | |
1034 | } | |
1035 | ||
1036 | DEFUN ("let", Flet, Slet, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1037 | doc: /* Bind variables according to VARLIST then eval BODY. |
1038 | The value of the last form in BODY is returned. | |
1039 | Each element of VARLIST is a symbol (which is bound to nil) | |
1040 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
1041 | All the VALUEFORMs are evalled before any symbols are bound. | |
7a25dc6d | 1042 | usage: (let VARLIST BODY...) */) |
9dbc9081 | 1043 | (args) |
db9f0278 JB |
1044 | Lisp_Object args; |
1045 | { | |
1046 | Lisp_Object *temps, tem; | |
1047 | register Lisp_Object elt, varlist; | |
aed13378 | 1048 | int count = SPECPDL_INDEX (); |
db9f0278 JB |
1049 | register int argnum; |
1050 | struct gcpro gcpro1, gcpro2; | |
1051 | ||
1052 | varlist = Fcar (args); | |
1053 | ||
1054 | /* Make space to hold the values to give the bound variables */ | |
1055 | elt = Flength (varlist); | |
1056 | temps = (Lisp_Object *) alloca (XFASTINT (elt) * sizeof (Lisp_Object)); | |
1057 | ||
1058 | /* Compute the values and store them in `temps' */ | |
1059 | ||
1060 | GCPRO2 (args, *temps); | |
1061 | gcpro2.nvars = 0; | |
1062 | ||
67ee9f6e | 1063 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 JB |
1064 | { |
1065 | QUIT; | |
67ee9f6e | 1066 | elt = XCAR (varlist); |
90165123 | 1067 | if (SYMBOLP (elt)) |
db9f0278 | 1068 | temps [argnum++] = Qnil; |
08564963 | 1069 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 1070 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
1071 | else |
1072 | temps [argnum++] = Feval (Fcar (Fcdr (elt))); | |
1073 | gcpro2.nvars = argnum; | |
1074 | } | |
1075 | UNGCPRO; | |
1076 | ||
1077 | varlist = Fcar (args); | |
67ee9f6e | 1078 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 | 1079 | { |
67ee9f6e | 1080 | elt = XCAR (varlist); |
db9f0278 | 1081 | tem = temps[argnum++]; |
90165123 | 1082 | if (SYMBOLP (elt)) |
db9f0278 JB |
1083 | specbind (elt, tem); |
1084 | else | |
1085 | specbind (Fcar (elt), tem); | |
1086 | } | |
1087 | ||
1088 | elt = Fprogn (Fcdr (args)); | |
1089 | return unbind_to (count, elt); | |
1090 | } | |
1091 | ||
1092 | DEFUN ("while", Fwhile, Swhile, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1093 | doc: /* If TEST yields non-nil, eval BODY... and repeat. |
1094 | The order of execution is thus TEST, BODY, TEST, BODY and so on | |
1095 | until TEST returns nil. | |
7a25dc6d | 1096 | usage: (while TEST BODY...) */) |
9dbc9081 | 1097 | (args) |
db9f0278 JB |
1098 | Lisp_Object args; |
1099 | { | |
2b9bde76 | 1100 | Lisp_Object test, body; |
db9f0278 JB |
1101 | struct gcpro gcpro1, gcpro2; |
1102 | ||
1103 | GCPRO2 (test, body); | |
1104 | ||
1105 | test = Fcar (args); | |
1106 | body = Fcdr (args); | |
2b9bde76 | 1107 | while (!NILP (Feval (test))) |
db9f0278 JB |
1108 | { |
1109 | QUIT; | |
1110 | Fprogn (body); | |
1111 | } | |
1112 | ||
1113 | UNGCPRO; | |
1114 | return Qnil; | |
1115 | } | |
1116 | ||
1117 | DEFUN ("macroexpand", Fmacroexpand, Smacroexpand, 1, 2, 0, | |
9dbc9081 PJ |
1118 | doc: /* Return result of expanding macros at top level of FORM. |
1119 | If FORM is not a macro call, it is returned unchanged. | |
1120 | Otherwise, the macro is expanded and the expansion is considered | |
1121 | in place of FORM. When a non-macro-call results, it is returned. | |
1122 | ||
1123 | The second optional arg ENVIRONMENT specifies an environment of macro | |
1124 | definitions to shadow the loaded ones for use in file byte-compilation. */) | |
1125 | (form, environment) | |
2e267a2e | 1126 | Lisp_Object form; |
79e8bfbf | 1127 | Lisp_Object environment; |
db9f0278 | 1128 | { |
23d6b5a6 | 1129 | /* With cleanups from Hallvard Furuseth. */ |
db9f0278 JB |
1130 | register Lisp_Object expander, sym, def, tem; |
1131 | ||
1132 | while (1) | |
1133 | { | |
1134 | /* Come back here each time we expand a macro call, | |
1135 | in case it expands into another macro call. */ | |
90165123 | 1136 | if (!CONSP (form)) |
db9f0278 | 1137 | break; |
23d6b5a6 | 1138 | /* Set SYM, give DEF and TEM right values in case SYM is not a symbol. */ |
03699b14 | 1139 | def = sym = XCAR (form); |
23d6b5a6 | 1140 | tem = Qnil; |
db9f0278 JB |
1141 | /* Trace symbols aliases to other symbols |
1142 | until we get a symbol that is not an alias. */ | |
90165123 | 1143 | while (SYMBOLP (def)) |
db9f0278 JB |
1144 | { |
1145 | QUIT; | |
23d6b5a6 | 1146 | sym = def; |
79e8bfbf | 1147 | tem = Fassq (sym, environment); |
265a9e55 | 1148 | if (NILP (tem)) |
db9f0278 JB |
1149 | { |
1150 | def = XSYMBOL (sym)->function; | |
23d6b5a6 JB |
1151 | if (!EQ (def, Qunbound)) |
1152 | continue; | |
db9f0278 | 1153 | } |
23d6b5a6 | 1154 | break; |
db9f0278 | 1155 | } |
79e8bfbf | 1156 | /* Right now TEM is the result from SYM in ENVIRONMENT, |
db9f0278 | 1157 | and if TEM is nil then DEF is SYM's function definition. */ |
265a9e55 | 1158 | if (NILP (tem)) |
db9f0278 | 1159 | { |
79e8bfbf | 1160 | /* SYM is not mentioned in ENVIRONMENT. |
db9f0278 | 1161 | Look at its function definition. */ |
90165123 | 1162 | if (EQ (def, Qunbound) || !CONSP (def)) |
db9f0278 JB |
1163 | /* Not defined or definition not suitable */ |
1164 | break; | |
03699b14 | 1165 | if (EQ (XCAR (def), Qautoload)) |
db9f0278 JB |
1166 | { |
1167 | /* Autoloading function: will it be a macro when loaded? */ | |
ee9ee63c | 1168 | tem = Fnth (make_number (4), def); |
47ccd8b6 | 1169 | if (EQ (tem, Qt) || EQ (tem, Qmacro)) |
ee9ee63c JB |
1170 | /* Yes, load it and try again. */ |
1171 | { | |
ca20916b RS |
1172 | struct gcpro gcpro1; |
1173 | GCPRO1 (form); | |
ee9ee63c | 1174 | do_autoload (def, sym); |
ca20916b | 1175 | UNGCPRO; |
ee9ee63c JB |
1176 | continue; |
1177 | } | |
1178 | else | |
db9f0278 | 1179 | break; |
db9f0278 | 1180 | } |
03699b14 | 1181 | else if (!EQ (XCAR (def), Qmacro)) |
db9f0278 | 1182 | break; |
03699b14 | 1183 | else expander = XCDR (def); |
db9f0278 JB |
1184 | } |
1185 | else | |
1186 | { | |
03699b14 | 1187 | expander = XCDR (tem); |
265a9e55 | 1188 | if (NILP (expander)) |
db9f0278 JB |
1189 | break; |
1190 | } | |
03699b14 | 1191 | form = apply1 (expander, XCDR (form)); |
db9f0278 JB |
1192 | } |
1193 | return form; | |
1194 | } | |
1195 | \f | |
1196 | DEFUN ("catch", Fcatch, Scatch, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1197 | doc: /* Eval BODY allowing nonlocal exits using `throw'. |
1198 | TAG is evalled to get the tag to use; it must not be nil. | |
1199 | ||
1200 | Then the BODY is executed. | |
1d632ccf | 1201 | Within BODY, a call to `throw' with the same TAG exits BODY and this `catch'. |
9dbc9081 PJ |
1202 | If no throw happens, `catch' returns the value of the last BODY form. |
1203 | If a throw happens, it specifies the value to return from `catch'. | |
7a25dc6d | 1204 | usage: (catch TAG BODY...) */) |
9dbc9081 | 1205 | (args) |
db9f0278 JB |
1206 | Lisp_Object args; |
1207 | { | |
1208 | register Lisp_Object tag; | |
1209 | struct gcpro gcpro1; | |
1210 | ||
1211 | GCPRO1 (args); | |
1212 | tag = Feval (Fcar (args)); | |
1213 | UNGCPRO; | |
1214 | return internal_catch (tag, Fprogn, Fcdr (args)); | |
1215 | } | |
1216 | ||
1217 | /* Set up a catch, then call C function FUNC on argument ARG. | |
1218 | FUNC should return a Lisp_Object. | |
1219 | This is how catches are done from within C code. */ | |
1220 | ||
1221 | Lisp_Object | |
1222 | internal_catch (tag, func, arg) | |
1223 | Lisp_Object tag; | |
1224 | Lisp_Object (*func) (); | |
1225 | Lisp_Object arg; | |
1226 | { | |
1227 | /* This structure is made part of the chain `catchlist'. */ | |
1228 | struct catchtag c; | |
1229 | ||
1230 | /* Fill in the components of c, and put it on the list. */ | |
1231 | c.next = catchlist; | |
1232 | c.tag = tag; | |
1233 | c.val = Qnil; | |
1234 | c.backlist = backtrace_list; | |
1235 | c.handlerlist = handlerlist; | |
1236 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1237 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1238 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1239 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1240 | c.gcpro = gcprolist; |
bcf28080 | 1241 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1242 | catchlist = &c; |
1243 | ||
1244 | /* Call FUNC. */ | |
1245 | if (! _setjmp (c.jmp)) | |
1246 | c.val = (*func) (arg); | |
1247 | ||
1248 | /* Throw works by a longjmp that comes right here. */ | |
1249 | catchlist = c.next; | |
1250 | return c.val; | |
1251 | } | |
1252 | ||
ba410f40 JB |
1253 | /* Unwind the specbind, catch, and handler stacks back to CATCH, and |
1254 | jump to that CATCH, returning VALUE as the value of that catch. | |
db9f0278 | 1255 | |
ba410f40 JB |
1256 | This is the guts Fthrow and Fsignal; they differ only in the way |
1257 | they choose the catch tag to throw to. A catch tag for a | |
1258 | condition-case form has a TAG of Qnil. | |
db9f0278 | 1259 | |
ba410f40 JB |
1260 | Before each catch is discarded, unbind all special bindings and |
1261 | execute all unwind-protect clauses made above that catch. Unwind | |
1262 | the handler stack as we go, so that the proper handlers are in | |
1263 | effect for each unwind-protect clause we run. At the end, restore | |
1264 | some static info saved in CATCH, and longjmp to the location | |
1265 | specified in the | |
1266 | ||
1267 | This is used for correct unwinding in Fthrow and Fsignal. */ | |
db9f0278 JB |
1268 | |
1269 | static void | |
ba410f40 | 1270 | unwind_to_catch (catch, value) |
db9f0278 | 1271 | struct catchtag *catch; |
ba410f40 | 1272 | Lisp_Object value; |
db9f0278 JB |
1273 | { |
1274 | register int last_time; | |
1275 | ||
ba410f40 JB |
1276 | /* Save the value in the tag. */ |
1277 | catch->val = value; | |
1278 | ||
0b31741c | 1279 | /* Restore certain special C variables. */ |
1cdc3155 | 1280 | set_poll_suppress_count (catch->poll_suppress_count); |
c1788fbc | 1281 | UNBLOCK_INPUT_TO (catch->interrupt_input_blocked); |
0b31741c | 1282 | handling_signal = 0; |
69bbd6bd | 1283 | immediate_quit = 0; |
82da7701 | 1284 | |
db9f0278 JB |
1285 | do |
1286 | { | |
1287 | last_time = catchlist == catch; | |
82da7701 JB |
1288 | |
1289 | /* Unwind the specpdl stack, and then restore the proper set of | |
1290 | handlers. */ | |
db9f0278 JB |
1291 | unbind_to (catchlist->pdlcount, Qnil); |
1292 | handlerlist = catchlist->handlerlist; | |
1293 | catchlist = catchlist->next; | |
1294 | } | |
1295 | while (! last_time); | |
1296 | ||
a2a103bb | 1297 | #if HAVE_X_WINDOWS |
88019a63 RS |
1298 | /* If x_catch_errors was done, turn it off now. |
1299 | (First we give unbind_to a chance to do that.) */ | |
e6aee454 KL |
1300 | #if 0 /* This would disable x_catch_errors after x_connection_closed. |
1301 | * The catch must remain in effect during that delicate | |
1302 | * state. --lorentey */ | |
88019a63 | 1303 | x_fully_uncatch_errors (); |
e6aee454 | 1304 | #endif |
a2a103bb | 1305 | #endif |
88019a63 | 1306 | |
bcf28080 | 1307 | byte_stack_list = catch->byte_stack; |
db9f0278 | 1308 | gcprolist = catch->gcpro; |
15934ffa RS |
1309 | #ifdef DEBUG_GCPRO |
1310 | if (gcprolist != 0) | |
1311 | gcpro_level = gcprolist->level + 1; | |
1312 | else | |
1313 | gcpro_level = 0; | |
1314 | #endif | |
db9f0278 JB |
1315 | backtrace_list = catch->backlist; |
1316 | lisp_eval_depth = catch->lisp_eval_depth; | |
177c0ea7 | 1317 | |
ba410f40 | 1318 | _longjmp (catch->jmp, 1); |
db9f0278 JB |
1319 | } |
1320 | ||
1321 | DEFUN ("throw", Fthrow, Sthrow, 2, 2, 0, | |
9dbc9081 PJ |
1322 | doc: /* Throw to the catch for TAG and return VALUE from it. |
1323 | Both TAG and VALUE are evalled. */) | |
1324 | (tag, value) | |
79e8bfbf | 1325 | register Lisp_Object tag, value; |
db9f0278 JB |
1326 | { |
1327 | register struct catchtag *c; | |
1328 | ||
8788120f KS |
1329 | if (!NILP (tag)) |
1330 | for (c = catchlist; c; c = c->next) | |
1331 | { | |
1332 | if (EQ (c->tag, tag)) | |
1333 | unwind_to_catch (c, value); | |
1334 | } | |
734d55a2 | 1335 | xsignal2 (Qno_catch, tag, value); |
db9f0278 JB |
1336 | } |
1337 | ||
1338 | ||
1339 | DEFUN ("unwind-protect", Funwind_protect, Sunwind_protect, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1340 | doc: /* Do BODYFORM, protecting with UNWINDFORMS. |
1341 | If BODYFORM completes normally, its value is returned | |
1342 | after executing the UNWINDFORMS. | |
1343 | If BODYFORM exits nonlocally, the UNWINDFORMS are executed anyway. | |
7a25dc6d | 1344 | usage: (unwind-protect BODYFORM UNWINDFORMS...) */) |
9dbc9081 | 1345 | (args) |
db9f0278 JB |
1346 | Lisp_Object args; |
1347 | { | |
1348 | Lisp_Object val; | |
aed13378 | 1349 | int count = SPECPDL_INDEX (); |
db9f0278 | 1350 | |
04b28167 | 1351 | record_unwind_protect (Fprogn, Fcdr (args)); |
db9f0278 | 1352 | val = Feval (Fcar (args)); |
177c0ea7 | 1353 | return unbind_to (count, val); |
db9f0278 JB |
1354 | } |
1355 | \f | |
1356 | /* Chain of condition handlers currently in effect. | |
1357 | The elements of this chain are contained in the stack frames | |
1358 | of Fcondition_case and internal_condition_case. | |
1359 | When an error is signaled (by calling Fsignal, below), | |
1360 | this chain is searched for an element that applies. */ | |
1361 | ||
1362 | struct handler *handlerlist; | |
1363 | ||
1364 | DEFUN ("condition-case", Fcondition_case, Scondition_case, 2, UNEVALLED, 0, | |
9dbc9081 | 1365 | doc: /* Regain control when an error is signaled. |
1b1acc13 | 1366 | Executes BODYFORM and returns its value if no error happens. |
9dbc9081 PJ |
1367 | Each element of HANDLERS looks like (CONDITION-NAME BODY...) |
1368 | where the BODY is made of Lisp expressions. | |
1369 | ||
1370 | A handler is applicable to an error | |
1371 | if CONDITION-NAME is one of the error's condition names. | |
1372 | If an error happens, the first applicable handler is run. | |
1373 | ||
1374 | The car of a handler may be a list of condition names | |
c997bb25 | 1375 | instead of a single condition name. Then it handles all of them. |
9dbc9081 | 1376 | |
c997bb25 RS |
1377 | When a handler handles an error, control returns to the `condition-case' |
1378 | and it executes the handler's BODY... | |
d0acbbaf | 1379 | with VAR bound to (ERROR-SYMBOL . SIGNAL-DATA) from the error. |
c997bb25 RS |
1380 | (If VAR is nil, the handler can't access that information.) |
1381 | Then the value of the last BODY form is returned from the `condition-case' | |
1382 | expression. | |
9dbc9081 | 1383 | |
9dbc9081 | 1384 | See also the function `signal' for more info. |
2b47b74d | 1385 | usage: (condition-case VAR BODYFORM &rest HANDLERS) */) |
9dbc9081 | 1386 | (args) |
db9f0278 JB |
1387 | Lisp_Object args; |
1388 | { | |
17401c97 GM |
1389 | register Lisp_Object bodyform, handlers; |
1390 | volatile Lisp_Object var; | |
db9f0278 | 1391 | |
82da7701 JB |
1392 | var = Fcar (args); |
1393 | bodyform = Fcar (Fcdr (args)); | |
1394 | handlers = Fcdr (Fcdr (args)); | |
ee830945 RS |
1395 | |
1396 | return internal_lisp_condition_case (var, bodyform, handlers); | |
1397 | } | |
1398 | ||
1399 | /* Like Fcondition_case, but the args are separate | |
1400 | rather than passed in a list. Used by Fbyte_code. */ | |
1401 | ||
1402 | Lisp_Object | |
1403 | internal_lisp_condition_case (var, bodyform, handlers) | |
1404 | volatile Lisp_Object var; | |
1405 | Lisp_Object bodyform, handlers; | |
1406 | { | |
1407 | Lisp_Object val; | |
1408 | struct catchtag c; | |
1409 | struct handler h; | |
1410 | ||
b7826503 | 1411 | CHECK_SYMBOL (var); |
82da7701 | 1412 | |
2b47b74d | 1413 | for (val = handlers; CONSP (val); val = XCDR (val)) |
82da7701 JB |
1414 | { |
1415 | Lisp_Object tem; | |
2b47b74d | 1416 | tem = XCAR (val); |
5f96776a RS |
1417 | if (! (NILP (tem) |
1418 | || (CONSP (tem) | |
03699b14 KR |
1419 | && (SYMBOLP (XCAR (tem)) |
1420 | || CONSP (XCAR (tem)))))) | |
82da7701 JB |
1421 | error ("Invalid condition handler", tem); |
1422 | } | |
db9f0278 JB |
1423 | |
1424 | c.tag = Qnil; | |
1425 | c.val = Qnil; | |
1426 | c.backlist = backtrace_list; | |
1427 | c.handlerlist = handlerlist; | |
1428 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1429 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1430 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1431 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1432 | c.gcpro = gcprolist; |
bcf28080 | 1433 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1434 | if (_setjmp (c.jmp)) |
1435 | { | |
265a9e55 | 1436 | if (!NILP (h.var)) |
9d58218c RS |
1437 | specbind (h.var, c.val); |
1438 | val = Fprogn (Fcdr (h.chosen_clause)); | |
82da7701 JB |
1439 | |
1440 | /* Note that this just undoes the binding of h.var; whoever | |
1441 | longjumped to us unwound the stack to c.pdlcount before | |
1442 | throwing. */ | |
db9f0278 JB |
1443 | unbind_to (c.pdlcount, Qnil); |
1444 | return val; | |
1445 | } | |
1446 | c.next = catchlist; | |
1447 | catchlist = &c; | |
177c0ea7 | 1448 | |
82da7701 JB |
1449 | h.var = var; |
1450 | h.handler = handlers; | |
db9f0278 | 1451 | h.next = handlerlist; |
db9f0278 JB |
1452 | h.tag = &c; |
1453 | handlerlist = &h; | |
1454 | ||
82da7701 | 1455 | val = Feval (bodyform); |
db9f0278 JB |
1456 | catchlist = c.next; |
1457 | handlerlist = h.next; | |
1458 | return val; | |
1459 | } | |
1460 | ||
f029ca5f RS |
1461 | /* Call the function BFUN with no arguments, catching errors within it |
1462 | according to HANDLERS. If there is an error, call HFUN with | |
1463 | one argument which is the data that describes the error: | |
1464 | (SIGNALNAME . DATA) | |
1465 | ||
1466 | HANDLERS can be a list of conditions to catch. | |
1467 | If HANDLERS is Qt, catch all errors. | |
1468 | If HANDLERS is Qerror, catch all errors | |
1469 | but allow the debugger to run if that is enabled. */ | |
1470 | ||
db9f0278 JB |
1471 | Lisp_Object |
1472 | internal_condition_case (bfun, handlers, hfun) | |
1473 | Lisp_Object (*bfun) (); | |
1474 | Lisp_Object handlers; | |
1475 | Lisp_Object (*hfun) (); | |
1476 | { | |
1477 | Lisp_Object val; | |
1478 | struct catchtag c; | |
1479 | struct handler h; | |
1480 | ||
88019a63 RS |
1481 | /* Since Fsignal will close off all calls to x_catch_errors, |
1482 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1483 | #if HAVE_X_WINDOWS |
88019a63 | 1484 | if (x_catching_errors ()) |
01591d17 | 1485 | abort (); |
a2a103bb | 1486 | #endif |
01591d17 | 1487 | |
db9f0278 JB |
1488 | c.tag = Qnil; |
1489 | c.val = Qnil; | |
1490 | c.backlist = backtrace_list; | |
1491 | c.handlerlist = handlerlist; | |
1492 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1493 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1494 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1495 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1496 | c.gcpro = gcprolist; |
bcf28080 | 1497 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1498 | if (_setjmp (c.jmp)) |
1499 | { | |
9d58218c | 1500 | return (*hfun) (c.val); |
db9f0278 JB |
1501 | } |
1502 | c.next = catchlist; | |
1503 | catchlist = &c; | |
1504 | h.handler = handlers; | |
1505 | h.var = Qnil; | |
db9f0278 JB |
1506 | h.next = handlerlist; |
1507 | h.tag = &c; | |
1508 | handlerlist = &h; | |
1509 | ||
1510 | val = (*bfun) (); | |
1511 | catchlist = c.next; | |
1512 | handlerlist = h.next; | |
1513 | return val; | |
1514 | } | |
1515 | ||
2659a09f | 1516 | /* Like internal_condition_case but call BFUN with ARG as its argument. */ |
f029ca5f | 1517 | |
d227775c RS |
1518 | Lisp_Object |
1519 | internal_condition_case_1 (bfun, arg, handlers, hfun) | |
1520 | Lisp_Object (*bfun) (); | |
1521 | Lisp_Object arg; | |
1522 | Lisp_Object handlers; | |
1523 | Lisp_Object (*hfun) (); | |
1524 | { | |
1525 | Lisp_Object val; | |
1526 | struct catchtag c; | |
1527 | struct handler h; | |
1528 | ||
88019a63 RS |
1529 | /* Since Fsignal will close off all calls to x_catch_errors, |
1530 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1531 | #if HAVE_X_WINDOWS |
88019a63 RS |
1532 | if (x_catching_errors ()) |
1533 | abort (); | |
a2a103bb | 1534 | #endif |
88019a63 | 1535 | |
d227775c RS |
1536 | c.tag = Qnil; |
1537 | c.val = Qnil; | |
1538 | c.backlist = backtrace_list; | |
1539 | c.handlerlist = handlerlist; | |
1540 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1541 | c.pdlcount = SPECPDL_INDEX (); |
d227775c | 1542 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1543 | c.interrupt_input_blocked = interrupt_input_blocked; |
d227775c | 1544 | c.gcpro = gcprolist; |
bcf28080 | 1545 | c.byte_stack = byte_stack_list; |
d227775c RS |
1546 | if (_setjmp (c.jmp)) |
1547 | { | |
9d58218c | 1548 | return (*hfun) (c.val); |
d227775c RS |
1549 | } |
1550 | c.next = catchlist; | |
1551 | catchlist = &c; | |
1552 | h.handler = handlers; | |
1553 | h.var = Qnil; | |
1554 | h.next = handlerlist; | |
1555 | h.tag = &c; | |
1556 | handlerlist = &h; | |
1557 | ||
1558 | val = (*bfun) (arg); | |
1559 | catchlist = c.next; | |
1560 | handlerlist = h.next; | |
1561 | return val; | |
1562 | } | |
10b29d41 | 1563 | |
53967e09 CY |
1564 | /* Like internal_condition_case_1 but call BFUN with ARG1 and ARG2 as |
1565 | its arguments. */ | |
1566 | ||
1567 | Lisp_Object | |
178f2507 SM |
1568 | internal_condition_case_2 (Lisp_Object (*bfun) (Lisp_Object, Lisp_Object), |
1569 | Lisp_Object arg1, | |
1570 | Lisp_Object arg2, | |
1571 | Lisp_Object handlers, | |
1572 | Lisp_Object (*hfun) (Lisp_Object)) | |
53967e09 CY |
1573 | { |
1574 | Lisp_Object val; | |
1575 | struct catchtag c; | |
1576 | struct handler h; | |
1577 | ||
1578 | /* Since Fsignal will close off all calls to x_catch_errors, | |
1579 | we will get the wrong results if some are not closed now. */ | |
1580 | #if HAVE_X_WINDOWS | |
1581 | if (x_catching_errors ()) | |
1582 | abort (); | |
1583 | #endif | |
1584 | ||
1585 | c.tag = Qnil; | |
1586 | c.val = Qnil; | |
1587 | c.backlist = backtrace_list; | |
1588 | c.handlerlist = handlerlist; | |
1589 | c.lisp_eval_depth = lisp_eval_depth; | |
1590 | c.pdlcount = SPECPDL_INDEX (); | |
1591 | c.poll_suppress_count = poll_suppress_count; | |
1592 | c.interrupt_input_blocked = interrupt_input_blocked; | |
1593 | c.gcpro = gcprolist; | |
1594 | c.byte_stack = byte_stack_list; | |
1595 | if (_setjmp (c.jmp)) | |
1596 | { | |
1597 | return (*hfun) (c.val); | |
1598 | } | |
1599 | c.next = catchlist; | |
1600 | catchlist = &c; | |
1601 | h.handler = handlers; | |
1602 | h.var = Qnil; | |
1603 | h.next = handlerlist; | |
1604 | h.tag = &c; | |
1605 | handlerlist = &h; | |
1606 | ||
1607 | val = (*bfun) (arg1, arg2); | |
1608 | catchlist = c.next; | |
1609 | handlerlist = h.next; | |
1610 | return val; | |
1611 | } | |
10b29d41 | 1612 | |
2659a09f | 1613 | /* Like internal_condition_case but call BFUN with NARGS as first, |
10b29d41 GM |
1614 | and ARGS as second argument. */ |
1615 | ||
1616 | Lisp_Object | |
178f2507 SM |
1617 | internal_condition_case_n (Lisp_Object (*bfun) (int, Lisp_Object*), |
1618 | int nargs, | |
1619 | Lisp_Object *args, | |
1620 | Lisp_Object handlers, | |
1621 | Lisp_Object (*hfun) (Lisp_Object)) | |
10b29d41 GM |
1622 | { |
1623 | Lisp_Object val; | |
1624 | struct catchtag c; | |
1625 | struct handler h; | |
1626 | ||
88019a63 RS |
1627 | /* Since Fsignal will close off all calls to x_catch_errors, |
1628 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1629 | #if HAVE_X_WINDOWS |
88019a63 RS |
1630 | if (x_catching_errors ()) |
1631 | abort (); | |
a2a103bb | 1632 | #endif |
88019a63 | 1633 | |
10b29d41 GM |
1634 | c.tag = Qnil; |
1635 | c.val = Qnil; | |
1636 | c.backlist = backtrace_list; | |
1637 | c.handlerlist = handlerlist; | |
1638 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1639 | c.pdlcount = SPECPDL_INDEX (); |
10b29d41 | 1640 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1641 | c.interrupt_input_blocked = interrupt_input_blocked; |
10b29d41 GM |
1642 | c.gcpro = gcprolist; |
1643 | c.byte_stack = byte_stack_list; | |
1644 | if (_setjmp (c.jmp)) | |
1645 | { | |
1646 | return (*hfun) (c.val); | |
1647 | } | |
1648 | c.next = catchlist; | |
1649 | catchlist = &c; | |
1650 | h.handler = handlers; | |
1651 | h.var = Qnil; | |
1652 | h.next = handlerlist; | |
1653 | h.tag = &c; | |
1654 | handlerlist = &h; | |
1655 | ||
1656 | val = (*bfun) (nargs, args); | |
1657 | catchlist = c.next; | |
1658 | handlerlist = h.next; | |
1659 | return val; | |
1660 | } | |
1661 | ||
d227775c | 1662 | \f |
2901f1d1 | 1663 | static Lisp_Object find_handler_clause P_ ((Lisp_Object, Lisp_Object, |
f01cbfdd | 1664 | Lisp_Object, Lisp_Object)); |
db9f0278 JB |
1665 | |
1666 | DEFUN ("signal", Fsignal, Ssignal, 2, 2, 0, | |
9dbc9081 PJ |
1667 | doc: /* Signal an error. Args are ERROR-SYMBOL and associated DATA. |
1668 | This function does not return. | |
1669 | ||
1670 | An error symbol is a symbol with an `error-conditions' property | |
1671 | that is a list of condition names. | |
1672 | A handler for any of those names will get to handle this signal. | |
1673 | The symbol `error' should normally be one of them. | |
1674 | ||
1675 | DATA should be a list. Its elements are printed as part of the error message. | |
3297ec22 LT |
1676 | See Info anchor `(elisp)Definition of signal' for some details on how this |
1677 | error message is constructed. | |
9dbc9081 PJ |
1678 | If the signal is handled, DATA is made available to the handler. |
1679 | See also the function `condition-case'. */) | |
1680 | (error_symbol, data) | |
4200e719 | 1681 | Lisp_Object error_symbol, data; |
db9f0278 | 1682 | { |
bfa8ca43 | 1683 | /* When memory is full, ERROR-SYMBOL is nil, |
26631f2b RS |
1684 | and DATA is (REAL-ERROR-SYMBOL . REAL-DATA). |
1685 | That is a special case--don't do this in other situations. */ | |
db9f0278 JB |
1686 | register struct handler *allhandlers = handlerlist; |
1687 | Lisp_Object conditions; | |
1688 | extern int gc_in_progress; | |
1689 | extern int waiting_for_input; | |
c11d3d17 | 1690 | Lisp_Object string; |
1ea9dec4 | 1691 | Lisp_Object real_error_symbol; |
a2ff3819 | 1692 | struct backtrace *bp; |
db9f0278 | 1693 | |
346598f1 | 1694 | immediate_quit = handling_signal = 0; |
d063129f | 1695 | abort_on_gc = 0; |
db9f0278 JB |
1696 | if (gc_in_progress || waiting_for_input) |
1697 | abort (); | |
1698 | ||
1ea9dec4 RS |
1699 | if (NILP (error_symbol)) |
1700 | real_error_symbol = Fcar (data); | |
1701 | else | |
1702 | real_error_symbol = error_symbol; | |
1703 | ||
26631f2b RS |
1704 | #if 0 /* rms: I don't know why this was here, |
1705 | but it is surely wrong for an error that is handled. */ | |
d148e14d | 1706 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
1707 | if (display_hourglass_p) |
1708 | cancel_hourglass (); | |
48f8dfa3 | 1709 | #endif |
177c0ea7 | 1710 | #endif |
48f8dfa3 | 1711 | |
61ede770 | 1712 | /* This hook is used by edebug. */ |
26631f2b RS |
1713 | if (! NILP (Vsignal_hook_function) |
1714 | && ! NILP (error_symbol)) | |
9f5903bb RS |
1715 | { |
1716 | /* Edebug takes care of restoring these variables when it exits. */ | |
1717 | if (lisp_eval_depth + 20 > max_lisp_eval_depth) | |
1718 | max_lisp_eval_depth = lisp_eval_depth + 20; | |
1719 | ||
1720 | if (SPECPDL_INDEX () + 40 > max_specpdl_size) | |
1721 | max_specpdl_size = SPECPDL_INDEX () + 40; | |
1722 | ||
1723 | call2 (Vsignal_hook_function, error_symbol, data); | |
1724 | } | |
61ede770 | 1725 | |
1ea9dec4 | 1726 | conditions = Fget (real_error_symbol, Qerror_conditions); |
db9f0278 | 1727 | |
a2ff3819 GM |
1728 | /* Remember from where signal was called. Skip over the frame for |
1729 | `signal' itself. If a frame for `error' follows, skip that, | |
26631f2b RS |
1730 | too. Don't do this when ERROR_SYMBOL is nil, because that |
1731 | is a memory-full error. */ | |
090a072f | 1732 | Vsignaling_function = Qnil; |
26631f2b | 1733 | if (backtrace_list && !NILP (error_symbol)) |
090a072f GM |
1734 | { |
1735 | bp = backtrace_list->next; | |
1736 | if (bp && bp->function && EQ (*bp->function, Qerror)) | |
1737 | bp = bp->next; | |
1738 | if (bp && bp->function) | |
1739 | Vsignaling_function = *bp->function; | |
1740 | } | |
a2ff3819 | 1741 | |
db9f0278 JB |
1742 | for (; handlerlist; handlerlist = handlerlist->next) |
1743 | { | |
1744 | register Lisp_Object clause; | |
177c0ea7 | 1745 | |
db9f0278 | 1746 | clause = find_handler_clause (handlerlist->handler, conditions, |
f01cbfdd | 1747 | error_symbol, data); |
db9f0278 | 1748 | |
db9f0278 | 1749 | if (EQ (clause, Qlambda)) |
82da7701 | 1750 | { |
690337b7 KH |
1751 | /* We can't return values to code which signaled an error, but we |
1752 | can continue code which has signaled a quit. */ | |
1ea9dec4 | 1753 | if (EQ (real_error_symbol, Qquit)) |
82da7701 JB |
1754 | return Qnil; |
1755 | else | |
d3e6f8be | 1756 | error ("Cannot return from the debugger in an error"); |
82da7701 | 1757 | } |
db9f0278 | 1758 | |
265a9e55 | 1759 | if (!NILP (clause)) |
db9f0278 | 1760 | { |
9d58218c | 1761 | Lisp_Object unwind_data; |
db9f0278 | 1762 | struct handler *h = handlerlist; |
9d58218c | 1763 | |
db9f0278 | 1764 | handlerlist = allhandlers; |
1ea9dec4 RS |
1765 | |
1766 | if (NILP (error_symbol)) | |
1767 | unwind_data = data; | |
9d58218c RS |
1768 | else |
1769 | unwind_data = Fcons (error_symbol, data); | |
1770 | h->chosen_clause = clause; | |
1771 | unwind_to_catch (h->tag, unwind_data); | |
db9f0278 JB |
1772 | } |
1773 | } | |
1774 | ||
1775 | handlerlist = allhandlers; | |
1776 | /* If no handler is present now, try to run the debugger, | |
1777 | and if that fails, throw to top level. */ | |
f01cbfdd | 1778 | find_handler_clause (Qerror, conditions, error_symbol, data); |
c11d3d17 RS |
1779 | if (catchlist != 0) |
1780 | Fthrow (Qtop_level, Qt); | |
1781 | ||
1ea9dec4 | 1782 | if (! NILP (error_symbol)) |
c11d3d17 RS |
1783 | data = Fcons (error_symbol, data); |
1784 | ||
1785 | string = Ferror_message_string (data); | |
d5db4077 | 1786 | fatal ("%s", SDATA (string), 0); |
db9f0278 JB |
1787 | } |
1788 | ||
734d55a2 KS |
1789 | /* Internal version of Fsignal that never returns. |
1790 | Used for anything but Qquit (which can return from Fsignal). */ | |
1791 | ||
1792 | void | |
1793 | xsignal (error_symbol, data) | |
1794 | Lisp_Object error_symbol, data; | |
1795 | { | |
1796 | Fsignal (error_symbol, data); | |
1797 | abort (); | |
1798 | } | |
1799 | ||
1800 | /* Like xsignal, but takes 0, 1, 2, or 3 args instead of a list. */ | |
1801 | ||
1802 | void | |
1803 | xsignal0 (error_symbol) | |
1804 | Lisp_Object error_symbol; | |
1805 | { | |
1806 | xsignal (error_symbol, Qnil); | |
1807 | } | |
1808 | ||
1809 | void | |
1810 | xsignal1 (error_symbol, arg) | |
1811 | Lisp_Object error_symbol, arg; | |
1812 | { | |
1813 | xsignal (error_symbol, list1 (arg)); | |
1814 | } | |
1815 | ||
1816 | void | |
1817 | xsignal2 (error_symbol, arg1, arg2) | |
1818 | Lisp_Object error_symbol, arg1, arg2; | |
1819 | { | |
1820 | xsignal (error_symbol, list2 (arg1, arg2)); | |
1821 | } | |
1822 | ||
1823 | void | |
1824 | xsignal3 (error_symbol, arg1, arg2, arg3) | |
1825 | Lisp_Object error_symbol, arg1, arg2, arg3; | |
1826 | { | |
1827 | xsignal (error_symbol, list3 (arg1, arg2, arg3)); | |
1828 | } | |
1829 | ||
1830 | /* Signal `error' with message S, and additional arg ARG. | |
1831 | If ARG is not a genuine list, make it a one-element list. */ | |
1832 | ||
1833 | void | |
1834 | signal_error (s, arg) | |
1835 | char *s; | |
1836 | Lisp_Object arg; | |
1837 | { | |
1838 | Lisp_Object tortoise, hare; | |
1839 | ||
1840 | hare = tortoise = arg; | |
1841 | while (CONSP (hare)) | |
1842 | { | |
1843 | hare = XCDR (hare); | |
1844 | if (!CONSP (hare)) | |
1845 | break; | |
1846 | ||
1847 | hare = XCDR (hare); | |
1848 | tortoise = XCDR (tortoise); | |
1849 | ||
1850 | if (EQ (hare, tortoise)) | |
1851 | break; | |
1852 | } | |
1853 | ||
1854 | if (!NILP (hare)) | |
1855 | arg = Fcons (arg, Qnil); /* Make it a list. */ | |
1856 | ||
1857 | xsignal (Qerror, Fcons (build_string (s), arg)); | |
1858 | } | |
1859 | ||
1860 | ||
e0f24100 | 1861 | /* Return nonzero if LIST is a non-nil atom or |
128c0f66 RM |
1862 | a list containing one of CONDITIONS. */ |
1863 | ||
1864 | static int | |
1865 | wants_debugger (list, conditions) | |
1866 | Lisp_Object list, conditions; | |
1867 | { | |
4de86b16 | 1868 | if (NILP (list)) |
128c0f66 RM |
1869 | return 0; |
1870 | if (! CONSP (list)) | |
1871 | return 1; | |
1872 | ||
ab67260b | 1873 | while (CONSP (conditions)) |
128c0f66 | 1874 | { |
ab67260b | 1875 | Lisp_Object this, tail; |
03699b14 KR |
1876 | this = XCAR (conditions); |
1877 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
1878 | if (EQ (XCAR (tail), this)) | |
128c0f66 | 1879 | return 1; |
03699b14 | 1880 | conditions = XCDR (conditions); |
128c0f66 | 1881 | } |
ab67260b | 1882 | return 0; |
128c0f66 RM |
1883 | } |
1884 | ||
fc950e09 KH |
1885 | /* Return 1 if an error with condition-symbols CONDITIONS, |
1886 | and described by SIGNAL-DATA, should skip the debugger | |
1b1acc13 | 1887 | according to debugger-ignored-errors. */ |
fc950e09 KH |
1888 | |
1889 | static int | |
1890 | skip_debugger (conditions, data) | |
1891 | Lisp_Object conditions, data; | |
1892 | { | |
1893 | Lisp_Object tail; | |
1894 | int first_string = 1; | |
1895 | Lisp_Object error_message; | |
1896 | ||
17401c97 GM |
1897 | error_message = Qnil; |
1898 | for (tail = Vdebug_ignored_errors; CONSP (tail); tail = XCDR (tail)) | |
fc950e09 | 1899 | { |
03699b14 | 1900 | if (STRINGP (XCAR (tail))) |
fc950e09 KH |
1901 | { |
1902 | if (first_string) | |
1903 | { | |
1904 | error_message = Ferror_message_string (data); | |
1905 | first_string = 0; | |
1906 | } | |
177c0ea7 | 1907 | |
03699b14 | 1908 | if (fast_string_match (XCAR (tail), error_message) >= 0) |
fc950e09 KH |
1909 | return 1; |
1910 | } | |
1911 | else | |
1912 | { | |
1913 | Lisp_Object contail; | |
1914 | ||
17401c97 | 1915 | for (contail = conditions; CONSP (contail); contail = XCDR (contail)) |
03699b14 | 1916 | if (EQ (XCAR (tail), XCAR (contail))) |
fc950e09 KH |
1917 | return 1; |
1918 | } | |
1919 | } | |
1920 | ||
1921 | return 0; | |
1922 | } | |
1923 | ||
ddaa36e1 AS |
1924 | /* Call the debugger if calling it is currently enabled for CONDITIONS. |
1925 | SIG and DATA describe the signal, as in find_handler_clause. */ | |
1926 | ||
1927 | static int | |
1928 | maybe_call_debugger (conditions, sig, data) | |
1929 | Lisp_Object conditions, sig, data; | |
1930 | { | |
1931 | Lisp_Object combined_data; | |
1932 | ||
1933 | combined_data = Fcons (sig, data); | |
1934 | ||
1935 | if ( | |
1936 | /* Don't try to run the debugger with interrupts blocked. | |
1937 | The editing loop would return anyway. */ | |
1938 | ! INPUT_BLOCKED_P | |
1939 | /* Does user want to enter debugger for this kind of error? */ | |
1940 | && (EQ (sig, Qquit) | |
1941 | ? debug_on_quit | |
1942 | : wants_debugger (Vdebug_on_error, conditions)) | |
1943 | && ! skip_debugger (conditions, combined_data) | |
1944 | /* rms: what's this for? */ | |
1945 | && when_entered_debugger < num_nonmacro_input_events) | |
1946 | { | |
1947 | call_debugger (Fcons (Qerror, Fcons (combined_data, Qnil))); | |
1948 | return 1; | |
1949 | } | |
1950 | ||
1951 | return 0; | |
1952 | } | |
1953 | ||
128c0f66 | 1954 | /* Value of Qlambda means we have called debugger and user has continued. |
1ea9dec4 | 1955 | There are two ways to pass SIG and DATA: |
9b942ebd | 1956 | = SIG is the error symbol, and DATA is the rest of the data. |
1ea9dec4 | 1957 | = SIG is nil, and DATA is (SYMBOL . REST-OF-DATA). |
9b942ebd | 1958 | This is for memory-full errors only. |
1ea9dec4 | 1959 | |
9f5903bb RS |
1960 | We need to increase max_specpdl_size temporarily around |
1961 | anything we do that can push on the specpdl, so as not to get | |
1962 | a second error here in case we're handling specpdl overflow. */ | |
db9f0278 JB |
1963 | |
1964 | static Lisp_Object | |
f01cbfdd | 1965 | find_handler_clause (handlers, conditions, sig, data) |
db9f0278 | 1966 | Lisp_Object handlers, conditions, sig, data; |
db9f0278 JB |
1967 | { |
1968 | register Lisp_Object h; | |
1969 | register Lisp_Object tem; | |
f01cbfdd RS |
1970 | int debugger_called = 0; |
1971 | int debugger_considered = 0; | |
db9f0278 | 1972 | |
f01cbfdd RS |
1973 | /* t is used by handlers for all conditions, set up by C code. */ |
1974 | if (EQ (handlers, Qt)) | |
db9f0278 | 1975 | return Qt; |
f01cbfdd RS |
1976 | |
1977 | /* Don't run the debugger for a memory-full error. | |
1978 | (There is no room in memory to do that!) */ | |
1979 | if (NILP (sig)) | |
1980 | debugger_considered = 1; | |
1981 | ||
61ede770 RS |
1982 | /* error is used similarly, but means print an error message |
1983 | and run the debugger if that is enabled. */ | |
1984 | if (EQ (handlers, Qerror) | |
57a6e758 RS |
1985 | || !NILP (Vdebug_on_signal)) /* This says call debugger even if |
1986 | there is a handler. */ | |
db9f0278 | 1987 | { |
f01cbfdd | 1988 | if (!NILP (sig) && wants_debugger (Vstack_trace_on_error, conditions)) |
88817f3b | 1989 | { |
48ce8ca7 | 1990 | max_lisp_eval_depth += 15; |
9f5903bb | 1991 | max_specpdl_size++; |
5b650faa SM |
1992 | if (noninteractive) |
1993 | Fbacktrace (); | |
1994 | else | |
1995 | internal_with_output_to_temp_buffer | |
1996 | ("*Backtrace*", | |
1997 | (Lisp_Object (*) (Lisp_Object)) Fbacktrace, | |
1998 | Qnil); | |
9f5903bb | 1999 | max_specpdl_size--; |
48ce8ca7 | 2000 | max_lisp_eval_depth -= 15; |
88817f3b | 2001 | } |
f01cbfdd RS |
2002 | |
2003 | if (!debugger_considered) | |
db9f0278 | 2004 | { |
f01cbfdd RS |
2005 | debugger_considered = 1; |
2006 | debugger_called = maybe_call_debugger (conditions, sig, data); | |
61ede770 | 2007 | } |
f01cbfdd | 2008 | |
61ede770 RS |
2009 | /* If there is no handler, return saying whether we ran the debugger. */ |
2010 | if (EQ (handlers, Qerror)) | |
2011 | { | |
2012 | if (debugger_called) | |
9f5903bb | 2013 | return Qlambda; |
61ede770 | 2014 | return Qt; |
db9f0278 | 2015 | } |
db9f0278 | 2016 | } |
f01cbfdd | 2017 | |
db9f0278 JB |
2018 | for (h = handlers; CONSP (h); h = Fcdr (h)) |
2019 | { | |
5f96776a RS |
2020 | Lisp_Object handler, condit; |
2021 | ||
2022 | handler = Fcar (h); | |
2023 | if (!CONSP (handler)) | |
db9f0278 | 2024 | continue; |
5f96776a RS |
2025 | condit = Fcar (handler); |
2026 | /* Handle a single condition name in handler HANDLER. */ | |
2027 | if (SYMBOLP (condit)) | |
2028 | { | |
2029 | tem = Fmemq (Fcar (handler), conditions); | |
2030 | if (!NILP (tem)) | |
2031 | return handler; | |
2032 | } | |
2033 | /* Handle a list of condition names in handler HANDLER. */ | |
2034 | else if (CONSP (condit)) | |
2035 | { | |
f01cbfdd RS |
2036 | Lisp_Object tail; |
2037 | for (tail = condit; CONSP (tail); tail = XCDR (tail)) | |
5f96776a | 2038 | { |
f01cbfdd | 2039 | tem = Fmemq (Fcar (tail), conditions); |
5f96776a | 2040 | if (!NILP (tem)) |
f01cbfdd RS |
2041 | { |
2042 | /* This handler is going to apply. | |
2043 | Does it allow the debugger to run first? */ | |
2044 | if (! debugger_considered && !NILP (Fmemq (Qdebug, condit))) | |
2045 | maybe_call_debugger (conditions, sig, data); | |
2046 | return handler; | |
2047 | } | |
5f96776a RS |
2048 | } |
2049 | } | |
db9f0278 | 2050 | } |
f01cbfdd | 2051 | |
db9f0278 JB |
2052 | return Qnil; |
2053 | } | |
2054 | ||
2055 | /* dump an error message; called like printf */ | |
2056 | ||
2057 | /* VARARGS 1 */ | |
2058 | void | |
2059 | error (m, a1, a2, a3) | |
2060 | char *m; | |
9125da08 | 2061 | char *a1, *a2, *a3; |
db9f0278 JB |
2062 | { |
2063 | char buf[200]; | |
9125da08 RS |
2064 | int size = 200; |
2065 | int mlen; | |
2066 | char *buffer = buf; | |
2067 | char *args[3]; | |
2068 | int allocated = 0; | |
2069 | Lisp_Object string; | |
2070 | ||
2071 | args[0] = a1; | |
2072 | args[1] = a2; | |
2073 | args[2] = a3; | |
2074 | ||
2075 | mlen = strlen (m); | |
db9f0278 JB |
2076 | |
2077 | while (1) | |
9125da08 | 2078 | { |
955f3ff9 | 2079 | int used = doprnt (buffer, size, m, m + mlen, 3, args); |
9125da08 RS |
2080 | if (used < size) |
2081 | break; | |
2082 | size *= 2; | |
2083 | if (allocated) | |
2084 | buffer = (char *) xrealloc (buffer, size); | |
5ece1728 RS |
2085 | else |
2086 | { | |
2087 | buffer = (char *) xmalloc (size); | |
2088 | allocated = 1; | |
2089 | } | |
9125da08 RS |
2090 | } |
2091 | ||
955f3ff9 | 2092 | string = build_string (buffer); |
9125da08 | 2093 | if (allocated) |
9ae6734f | 2094 | xfree (buffer); |
9125da08 | 2095 | |
734d55a2 | 2096 | xsignal1 (Qerror, string); |
db9f0278 JB |
2097 | } |
2098 | \f | |
e72706be | 2099 | DEFUN ("commandp", Fcommandp, Scommandp, 1, 2, 0, |
9dbc9081 PJ |
2100 | doc: /* Non-nil if FUNCTION makes provisions for interactive calling. |
2101 | This means it contains a description for how to read arguments to give it. | |
2102 | The value is nil for an invalid function or a symbol with no function | |
2103 | definition. | |
2104 | ||
2105 | Interactively callable functions include strings and vectors (treated | |
2106 | as keyboard macros), lambda-expressions that contain a top-level call | |
2107 | to `interactive', autoload definitions made by `autoload' with non-nil | |
2108 | fourth argument, and some of the built-in functions of Lisp. | |
2109 | ||
e72706be RS |
2110 | Also, a symbol satisfies `commandp' if its function definition does so. |
2111 | ||
2112 | If the optional argument FOR-CALL-INTERACTIVELY is non-nil, | |
769b4fb2 | 2113 | then strings and vectors are not accepted. */) |
e72706be RS |
2114 | (function, for_call_interactively) |
2115 | Lisp_Object function, for_call_interactively; | |
db9f0278 JB |
2116 | { |
2117 | register Lisp_Object fun; | |
2118 | register Lisp_Object funcar; | |
52b71f49 | 2119 | Lisp_Object if_prop = Qnil; |
db9f0278 JB |
2120 | |
2121 | fun = function; | |
2122 | ||
52b71f49 SM |
2123 | fun = indirect_function (fun); /* Check cycles. */ |
2124 | if (NILP (fun) || EQ (fun, Qunbound)) | |
ffd56f97 | 2125 | return Qnil; |
db9f0278 | 2126 | |
52b71f49 SM |
2127 | /* Check an `interactive-form' property if present, analogous to the |
2128 | function-documentation property. */ | |
2129 | fun = function; | |
2130 | while (SYMBOLP (fun)) | |
2131 | { | |
2b9aa051 | 2132 | Lisp_Object tmp = Fget (fun, Qinteractive_form); |
52b71f49 SM |
2133 | if (!NILP (tmp)) |
2134 | if_prop = Qt; | |
2135 | fun = Fsymbol_function (fun); | |
2136 | } | |
2137 | ||
db9f0278 JB |
2138 | /* Emacs primitives are interactive if their DEFUN specifies an |
2139 | interactive spec. */ | |
90165123 | 2140 | if (SUBRP (fun)) |
04724b69 | 2141 | return XSUBR (fun)->intspec ? Qt : if_prop; |
db9f0278 JB |
2142 | |
2143 | /* Bytecode objects are interactive if they are long enough to | |
2144 | have an element whose index is COMPILED_INTERACTIVE, which is | |
2145 | where the interactive spec is stored. */ | |
90165123 | 2146 | else if (COMPILEDP (fun)) |
845975f5 | 2147 | return ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE |
52b71f49 | 2148 | ? Qt : if_prop); |
db9f0278 JB |
2149 | |
2150 | /* Strings and vectors are keyboard macros. */ | |
52b71f49 | 2151 | if (STRINGP (fun) || VECTORP (fun)) |
6e33efc4 | 2152 | return (NILP (for_call_interactively) ? Qt : Qnil); |
db9f0278 JB |
2153 | |
2154 | /* Lists may represent commands. */ | |
2155 | if (!CONSP (fun)) | |
2156 | return Qnil; | |
ed16fb98 | 2157 | funcar = XCAR (fun); |
db9f0278 | 2158 | if (EQ (funcar, Qlambda)) |
52b71f49 | 2159 | return !NILP (Fassq (Qinteractive, Fcdr (XCDR (fun)))) ? Qt : if_prop; |
db9f0278 | 2160 | if (EQ (funcar, Qautoload)) |
52b71f49 | 2161 | return !NILP (Fcar (Fcdr (Fcdr (XCDR (fun))))) ? Qt : if_prop; |
db9f0278 JB |
2162 | else |
2163 | return Qnil; | |
2164 | } | |
2165 | ||
db9f0278 | 2166 | DEFUN ("autoload", Fautoload, Sautoload, 2, 5, 0, |
9dbc9081 PJ |
2167 | doc: /* Define FUNCTION to autoload from FILE. |
2168 | FUNCTION is a symbol; FILE is a file name string to pass to `load'. | |
2169 | Third arg DOCSTRING is documentation for the function. | |
2170 | Fourth arg INTERACTIVE if non-nil says function can be called interactively. | |
2171 | Fifth arg TYPE indicates the type of the object: | |
2172 | nil or omitted says FUNCTION is a function, | |
2173 | `keymap' says FUNCTION is really a keymap, and | |
2174 | `macro' or t says FUNCTION is really a macro. | |
2175 | Third through fifth args give info about the real definition. | |
2176 | They default to nil. | |
2177 | If FUNCTION is already defined other than as an autoload, | |
2178 | this does nothing and returns nil. */) | |
2179 | (function, file, docstring, interactive, type) | |
ee9ee63c | 2180 | Lisp_Object function, file, docstring, interactive, type; |
db9f0278 | 2181 | { |
b7826503 PJ |
2182 | CHECK_SYMBOL (function); |
2183 | CHECK_STRING (file); | |
db9f0278 JB |
2184 | |
2185 | /* If function is defined and not as an autoload, don't override */ | |
2186 | if (!EQ (XSYMBOL (function)->function, Qunbound) | |
90165123 | 2187 | && !(CONSP (XSYMBOL (function)->function) |
03699b14 | 2188 | && EQ (XCAR (XSYMBOL (function)->function), Qautoload))) |
db9f0278 JB |
2189 | return Qnil; |
2190 | ||
7973e637 SM |
2191 | if (NILP (Vpurify_flag)) |
2192 | /* Only add entries after dumping, because the ones before are | |
2193 | not useful and else we get loads of them from the loaddefs.el. */ | |
2194 | LOADHIST_ATTACH (Fcons (Qautoload, function)); | |
905a9ed3 | 2195 | else |
a56eaaef | 2196 | /* We don't want the docstring in purespace (instead, |
d6d23852 SM |
2197 | Snarf-documentation should (hopefully) overwrite it). |
2198 | We used to use 0 here, but that leads to accidental sharing in | |
2199 | purecopy's hash-consing, so we use a (hopefully) unique integer | |
2200 | instead. */ | |
2201 | docstring = make_number (XHASH (function)); | |
a56eaaef DN |
2202 | return Ffset (function, |
2203 | Fpurecopy (list5 (Qautoload, file, docstring, | |
2204 | interactive, type))); | |
db9f0278 JB |
2205 | } |
2206 | ||
2207 | Lisp_Object | |
2208 | un_autoload (oldqueue) | |
2209 | Lisp_Object oldqueue; | |
2210 | { | |
2211 | register Lisp_Object queue, first, second; | |
2212 | ||
2213 | /* Queue to unwind is current value of Vautoload_queue. | |
2214 | oldqueue is the shadowed value to leave in Vautoload_queue. */ | |
2215 | queue = Vautoload_queue; | |
2216 | Vautoload_queue = oldqueue; | |
2217 | while (CONSP (queue)) | |
2218 | { | |
e509f168 | 2219 | first = XCAR (queue); |
db9f0278 JB |
2220 | second = Fcdr (first); |
2221 | first = Fcar (first); | |
47b82df9 RS |
2222 | if (EQ (first, make_number (0))) |
2223 | Vfeatures = second; | |
db9f0278 JB |
2224 | else |
2225 | Ffset (first, second); | |
e509f168 | 2226 | queue = XCDR (queue); |
db9f0278 JB |
2227 | } |
2228 | return Qnil; | |
2229 | } | |
2230 | ||
ca20916b RS |
2231 | /* Load an autoloaded function. |
2232 | FUNNAME is the symbol which is the function's name. | |
2233 | FUNDEF is the autoload definition (a list). */ | |
2234 | ||
045ba794 | 2235 | void |
db9f0278 JB |
2236 | do_autoload (fundef, funname) |
2237 | Lisp_Object fundef, funname; | |
2238 | { | |
aed13378 | 2239 | int count = SPECPDL_INDEX (); |
d945992e | 2240 | Lisp_Object fun; |
ca20916b | 2241 | struct gcpro gcpro1, gcpro2, gcpro3; |
db9f0278 | 2242 | |
aea6173f RS |
2243 | /* This is to make sure that loadup.el gives a clear picture |
2244 | of what files are preloaded and when. */ | |
ab4db096 RS |
2245 | if (! NILP (Vpurify_flag)) |
2246 | error ("Attempt to autoload %s while preparing to dump", | |
d5db4077 | 2247 | SDATA (SYMBOL_NAME (funname))); |
ab4db096 | 2248 | |
db9f0278 | 2249 | fun = funname; |
b7826503 | 2250 | CHECK_SYMBOL (funname); |
ca20916b | 2251 | GCPRO3 (fun, funname, fundef); |
db9f0278 | 2252 | |
f87740dc | 2253 | /* Preserve the match data. */ |
89f2614d | 2254 | record_unwind_save_match_data (); |
177c0ea7 | 2255 | |
a04ee161 RS |
2256 | /* If autoloading gets an error (which includes the error of failing |
2257 | to define the function being called), we use Vautoload_queue | |
2258 | to undo function definitions and `provide' calls made by | |
2259 | the function. We do this in the specific case of autoloading | |
2260 | because autoloading is not an explicit request "load this file", | |
2261 | but rather a request to "call this function". | |
2262 | ||
2263 | The value saved here is to be restored into Vautoload_queue. */ | |
db9f0278 JB |
2264 | record_unwind_protect (un_autoload, Vautoload_queue); |
2265 | Vautoload_queue = Qt; | |
7351b242 | 2266 | Fload (Fcar (Fcdr (fundef)), Qnil, Qt, Qnil, Qt); |
2a49b6e5 | 2267 | |
db9f0278 JB |
2268 | /* Once loading finishes, don't undo it. */ |
2269 | Vautoload_queue = Qt; | |
2270 | unbind_to (count, Qnil); | |
2271 | ||
a7f96a35 | 2272 | fun = Findirect_function (fun, Qnil); |
ffd56f97 | 2273 | |
76c2b0cc | 2274 | if (!NILP (Fequal (fun, fundef))) |
db9f0278 | 2275 | error ("Autoloading failed to define function %s", |
d5db4077 | 2276 | SDATA (SYMBOL_NAME (funname))); |
ca20916b | 2277 | UNGCPRO; |
db9f0278 | 2278 | } |
4c576a83 | 2279 | |
db9f0278 JB |
2280 | \f |
2281 | DEFUN ("eval", Feval, Seval, 1, 1, 0, | |
9dbc9081 PJ |
2282 | doc: /* Evaluate FORM and return its value. */) |
2283 | (form) | |
db9f0278 JB |
2284 | Lisp_Object form; |
2285 | { | |
2286 | Lisp_Object fun, val, original_fun, original_args; | |
2287 | Lisp_Object funcar; | |
2288 | struct backtrace backtrace; | |
2289 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2290 | ||
df470e3b | 2291 | if (handling_signal) |
48f8dfa3 | 2292 | abort (); |
177c0ea7 | 2293 | |
90165123 | 2294 | if (SYMBOLP (form)) |
2b9bde76 | 2295 | return Fsymbol_value (form); |
db9f0278 JB |
2296 | if (!CONSP (form)) |
2297 | return form; | |
2298 | ||
2299 | QUIT; | |
ee830945 RS |
2300 | if ((consing_since_gc > gc_cons_threshold |
2301 | && consing_since_gc > gc_relative_threshold) | |
2302 | || | |
2303 | (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold)) | |
db9f0278 JB |
2304 | { |
2305 | GCPRO1 (form); | |
2306 | Fgarbage_collect (); | |
2307 | UNGCPRO; | |
2308 | } | |
2309 | ||
2310 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2311 | { | |
2312 | if (max_lisp_eval_depth < 100) | |
2313 | max_lisp_eval_depth = 100; | |
2314 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2315 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2316 | } |
2317 | ||
2318 | original_fun = Fcar (form); | |
2319 | original_args = Fcdr (form); | |
2320 | ||
2321 | backtrace.next = backtrace_list; | |
2322 | backtrace_list = &backtrace; | |
2323 | backtrace.function = &original_fun; /* This also protects them from gc */ | |
2324 | backtrace.args = &original_args; | |
2325 | backtrace.nargs = UNEVALLED; | |
2326 | backtrace.evalargs = 1; | |
2327 | backtrace.debug_on_exit = 0; | |
2328 | ||
2329 | if (debug_on_next_call) | |
2330 | do_debug_on_call (Qt); | |
2331 | ||
2332 | /* At this point, only original_fun and original_args | |
2333 | have values that will be used below */ | |
2334 | retry: | |
8788120f KS |
2335 | |
2336 | /* Optimize for no indirection. */ | |
2337 | fun = original_fun; | |
2338 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2339 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2340 | fun = indirect_function (fun); | |
db9f0278 | 2341 | |
90165123 | 2342 | if (SUBRP (fun)) |
db9f0278 JB |
2343 | { |
2344 | Lisp_Object numargs; | |
166c822d | 2345 | Lisp_Object argvals[8]; |
db9f0278 JB |
2346 | Lisp_Object args_left; |
2347 | register int i, maxargs; | |
2348 | ||
2349 | args_left = original_args; | |
2350 | numargs = Flength (args_left); | |
2351 | ||
c1788fbc RS |
2352 | CHECK_CONS_LIST (); |
2353 | ||
db9f0278 JB |
2354 | if (XINT (numargs) < XSUBR (fun)->min_args || |
2355 | (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < XINT (numargs))) | |
734d55a2 | 2356 | xsignal2 (Qwrong_number_of_arguments, original_fun, numargs); |
db9f0278 JB |
2357 | |
2358 | if (XSUBR (fun)->max_args == UNEVALLED) | |
2359 | { | |
2360 | backtrace.evalargs = 0; | |
2361 | val = (*XSUBR (fun)->function) (args_left); | |
2362 | goto done; | |
2363 | } | |
2364 | ||
2365 | if (XSUBR (fun)->max_args == MANY) | |
2366 | { | |
2367 | /* Pass a vector of evaluated arguments */ | |
2368 | Lisp_Object *vals; | |
2369 | register int argnum = 0; | |
2370 | ||
2371 | vals = (Lisp_Object *) alloca (XINT (numargs) * sizeof (Lisp_Object)); | |
2372 | ||
2373 | GCPRO3 (args_left, fun, fun); | |
2374 | gcpro3.var = vals; | |
2375 | gcpro3.nvars = 0; | |
2376 | ||
265a9e55 | 2377 | while (!NILP (args_left)) |
db9f0278 JB |
2378 | { |
2379 | vals[argnum++] = Feval (Fcar (args_left)); | |
2380 | args_left = Fcdr (args_left); | |
2381 | gcpro3.nvars = argnum; | |
2382 | } | |
db9f0278 JB |
2383 | |
2384 | backtrace.args = vals; | |
2385 | backtrace.nargs = XINT (numargs); | |
2386 | ||
2387 | val = (*XSUBR (fun)->function) (XINT (numargs), vals); | |
a6e3fa71 | 2388 | UNGCPRO; |
db9f0278 JB |
2389 | goto done; |
2390 | } | |
2391 | ||
2392 | GCPRO3 (args_left, fun, fun); | |
2393 | gcpro3.var = argvals; | |
2394 | gcpro3.nvars = 0; | |
2395 | ||
2396 | maxargs = XSUBR (fun)->max_args; | |
2397 | for (i = 0; i < maxargs; args_left = Fcdr (args_left)) | |
2398 | { | |
2399 | argvals[i] = Feval (Fcar (args_left)); | |
2400 | gcpro3.nvars = ++i; | |
2401 | } | |
2402 | ||
2403 | UNGCPRO; | |
2404 | ||
2405 | backtrace.args = argvals; | |
2406 | backtrace.nargs = XINT (numargs); | |
2407 | ||
2408 | switch (i) | |
2409 | { | |
2410 | case 0: | |
2411 | val = (*XSUBR (fun)->function) (); | |
2412 | goto done; | |
2413 | case 1: | |
2414 | val = (*XSUBR (fun)->function) (argvals[0]); | |
2415 | goto done; | |
2416 | case 2: | |
2417 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1]); | |
2418 | goto done; | |
2419 | case 3: | |
2420 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], | |
2421 | argvals[2]); | |
2422 | goto done; | |
2423 | case 4: | |
2424 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], | |
2425 | argvals[2], argvals[3]); | |
2426 | goto done; | |
2427 | case 5: | |
2428 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
2429 | argvals[3], argvals[4]); | |
2430 | goto done; | |
2431 | case 6: | |
2432 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
2433 | argvals[3], argvals[4], argvals[5]); | |
2434 | goto done; | |
15c65264 RS |
2435 | case 7: |
2436 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
2437 | argvals[3], argvals[4], argvals[5], | |
2438 | argvals[6]); | |
2439 | goto done; | |
db9f0278 | 2440 | |
166c822d KH |
2441 | case 8: |
2442 | val = (*XSUBR (fun)->function) (argvals[0], argvals[1], argvals[2], | |
2443 | argvals[3], argvals[4], argvals[5], | |
2444 | argvals[6], argvals[7]); | |
2445 | goto done; | |
2446 | ||
db9f0278 | 2447 | default: |
08564963 JB |
2448 | /* Someone has created a subr that takes more arguments than |
2449 | is supported by this code. We need to either rewrite the | |
2450 | subr to use a different argument protocol, or add more | |
2451 | cases to this switch. */ | |
2452 | abort (); | |
db9f0278 JB |
2453 | } |
2454 | } | |
90165123 | 2455 | if (COMPILEDP (fun)) |
db9f0278 JB |
2456 | val = apply_lambda (fun, original_args, 1); |
2457 | else | |
2458 | { | |
8788120f | 2459 | if (EQ (fun, Qunbound)) |
734d55a2 | 2460 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 2461 | if (!CONSP (fun)) |
734d55a2 KS |
2462 | xsignal1 (Qinvalid_function, original_fun); |
2463 | funcar = XCAR (fun); | |
90165123 | 2464 | if (!SYMBOLP (funcar)) |
734d55a2 | 2465 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
2466 | if (EQ (funcar, Qautoload)) |
2467 | { | |
2468 | do_autoload (fun, original_fun); | |
2469 | goto retry; | |
2470 | } | |
2471 | if (EQ (funcar, Qmacro)) | |
2472 | val = Feval (apply1 (Fcdr (fun), original_args)); | |
2473 | else if (EQ (funcar, Qlambda)) | |
2474 | val = apply_lambda (fun, original_args, 1); | |
db9f0278 | 2475 | else |
734d55a2 | 2476 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
2477 | } |
2478 | done: | |
c1788fbc RS |
2479 | CHECK_CONS_LIST (); |
2480 | ||
db9f0278 JB |
2481 | lisp_eval_depth--; |
2482 | if (backtrace.debug_on_exit) | |
2483 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2484 | backtrace_list = backtrace.next; | |
824eb35e | 2485 | |
db9f0278 JB |
2486 | return val; |
2487 | } | |
2488 | \f | |
2489 | DEFUN ("apply", Fapply, Sapply, 2, MANY, 0, | |
9dbc9081 PJ |
2490 | doc: /* Call FUNCTION with our remaining args, using our last arg as list of args. |
2491 | Then return the value FUNCTION returns. | |
2492 | Thus, (apply '+ 1 2 '(3 4)) returns 10. | |
2493 | usage: (apply FUNCTION &rest ARGUMENTS) */) | |
2494 | (nargs, args) | |
db9f0278 JB |
2495 | int nargs; |
2496 | Lisp_Object *args; | |
2497 | { | |
2498 | register int i, numargs; | |
2499 | register Lisp_Object spread_arg; | |
2500 | register Lisp_Object *funcall_args; | |
db9f0278 | 2501 | Lisp_Object fun; |
96d44c64 | 2502 | struct gcpro gcpro1; |
db9f0278 JB |
2503 | |
2504 | fun = args [0]; | |
2505 | funcall_args = 0; | |
2506 | spread_arg = args [nargs - 1]; | |
b7826503 | 2507 | CHECK_LIST (spread_arg); |
177c0ea7 | 2508 | |
db9f0278 JB |
2509 | numargs = XINT (Flength (spread_arg)); |
2510 | ||
2511 | if (numargs == 0) | |
2512 | return Ffuncall (nargs - 1, args); | |
2513 | else if (numargs == 1) | |
2514 | { | |
03699b14 | 2515 | args [nargs - 1] = XCAR (spread_arg); |
db9f0278 JB |
2516 | return Ffuncall (nargs, args); |
2517 | } | |
2518 | ||
a6e3fa71 | 2519 | numargs += nargs - 2; |
db9f0278 | 2520 | |
8788120f KS |
2521 | /* Optimize for no indirection. */ |
2522 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2523 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2524 | fun = indirect_function (fun); | |
ffd56f97 | 2525 | if (EQ (fun, Qunbound)) |
db9f0278 | 2526 | { |
ffd56f97 JB |
2527 | /* Let funcall get the error */ |
2528 | fun = args[0]; | |
2529 | goto funcall; | |
db9f0278 JB |
2530 | } |
2531 | ||
90165123 | 2532 | if (SUBRP (fun)) |
db9f0278 JB |
2533 | { |
2534 | if (numargs < XSUBR (fun)->min_args | |
2535 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) | |
2536 | goto funcall; /* Let funcall get the error */ | |
2537 | else if (XSUBR (fun)->max_args > numargs) | |
2538 | { | |
2539 | /* Avoid making funcall cons up a yet another new vector of arguments | |
2540 | by explicitly supplying nil's for optional values */ | |
2541 | funcall_args = (Lisp_Object *) alloca ((1 + XSUBR (fun)->max_args) | |
2542 | * sizeof (Lisp_Object)); | |
2543 | for (i = numargs; i < XSUBR (fun)->max_args;) | |
2544 | funcall_args[++i] = Qnil; | |
96d44c64 SM |
2545 | GCPRO1 (*funcall_args); |
2546 | gcpro1.nvars = 1 + XSUBR (fun)->max_args; | |
db9f0278 JB |
2547 | } |
2548 | } | |
2549 | funcall: | |
2550 | /* We add 1 to numargs because funcall_args includes the | |
2551 | function itself as well as its arguments. */ | |
2552 | if (!funcall_args) | |
a6e3fa71 JB |
2553 | { |
2554 | funcall_args = (Lisp_Object *) alloca ((1 + numargs) | |
2555 | * sizeof (Lisp_Object)); | |
96d44c64 SM |
2556 | GCPRO1 (*funcall_args); |
2557 | gcpro1.nvars = 1 + numargs; | |
a6e3fa71 JB |
2558 | } |
2559 | ||
db9f0278 JB |
2560 | bcopy (args, funcall_args, nargs * sizeof (Lisp_Object)); |
2561 | /* Spread the last arg we got. Its first element goes in | |
2562 | the slot that it used to occupy, hence this value of I. */ | |
2563 | i = nargs - 1; | |
265a9e55 | 2564 | while (!NILP (spread_arg)) |
db9f0278 | 2565 | { |
03699b14 KR |
2566 | funcall_args [i++] = XCAR (spread_arg); |
2567 | spread_arg = XCDR (spread_arg); | |
db9f0278 | 2568 | } |
a6e3fa71 | 2569 | |
96d44c64 SM |
2570 | /* By convention, the caller needs to gcpro Ffuncall's args. */ |
2571 | RETURN_UNGCPRO (Ffuncall (gcpro1.nvars, funcall_args)); | |
db9f0278 JB |
2572 | } |
2573 | \f | |
ff936e53 SM |
2574 | /* Run hook variables in various ways. */ |
2575 | ||
2576 | enum run_hooks_condition {to_completion, until_success, until_failure}; | |
2901f1d1 SM |
2577 | static Lisp_Object run_hook_with_args P_ ((int, Lisp_Object *, |
2578 | enum run_hooks_condition)); | |
ff936e53 | 2579 | |
8b5176cd | 2580 | DEFUN ("run-hooks", Frun_hooks, Srun_hooks, 0, MANY, 0, |
9f685258 | 2581 | doc: /* Run each hook in HOOKS. |
9dbc9081 PJ |
2582 | Each argument should be a symbol, a hook variable. |
2583 | These symbols are processed in the order specified. | |
2584 | If a hook symbol has a non-nil value, that value may be a function | |
2585 | or a list of functions to be called to run the hook. | |
2586 | If the value is a function, it is called with no arguments. | |
2587 | If it is a list, the elements are called, in order, with no arguments. | |
2588 | ||
9f685258 LK |
2589 | Major modes should not use this function directly to run their mode |
2590 | hook; they should use `run-mode-hooks' instead. | |
2591 | ||
72e85d5d RS |
2592 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2593 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2594 | usage: (run-hooks &rest HOOKS) */) |
2595 | (nargs, args) | |
ff936e53 SM |
2596 | int nargs; |
2597 | Lisp_Object *args; | |
2598 | { | |
2599 | Lisp_Object hook[1]; | |
2600 | register int i; | |
2601 | ||
2602 | for (i = 0; i < nargs; i++) | |
2603 | { | |
2604 | hook[0] = args[i]; | |
2605 | run_hook_with_args (1, hook, to_completion); | |
2606 | } | |
2607 | ||
2608 | return Qnil; | |
2609 | } | |
177c0ea7 | 2610 | |
a0d76c27 | 2611 | DEFUN ("run-hook-with-args", Frun_hook_with_args, |
9dbc9081 PJ |
2612 | Srun_hook_with_args, 1, MANY, 0, |
2613 | doc: /* Run HOOK with the specified arguments ARGS. | |
2614 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil | |
2615 | value, that value may be a function or a list of functions to be | |
2616 | called to run the hook. If the value is a function, it is called with | |
2617 | the given arguments and its return value is returned. If it is a list | |
2618 | of functions, those functions are called, in order, | |
2619 | with the given arguments ARGS. | |
d5e2c90c | 2620 | It is best not to depend on the value returned by `run-hook-with-args', |
9dbc9081 PJ |
2621 | as that may change. |
2622 | ||
72e85d5d RS |
2623 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2624 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2625 | usage: (run-hook-with-args HOOK &rest ARGS) */) |
2626 | (nargs, args) | |
ff936e53 SM |
2627 | int nargs; |
2628 | Lisp_Object *args; | |
2629 | { | |
2630 | return run_hook_with_args (nargs, args, to_completion); | |
2631 | } | |
2632 | ||
a0d76c27 | 2633 | DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success, |
9dbc9081 PJ |
2634 | Srun_hook_with_args_until_success, 1, MANY, 0, |
2635 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2636 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2637 | value, that value may be a function or a list of functions to be | |
2638 | called to run the hook. If the value is a function, it is called with | |
2639 | the given arguments and its return value is returned. | |
2640 | If it is a list of functions, those functions are called, in order, | |
2641 | with the given arguments ARGS, until one of them | |
9dbc9081 | 2642 | returns a non-nil value. Then we return that value. |
d5e2c90c | 2643 | However, if they all return nil, we return nil. |
9dbc9081 | 2644 | |
72e85d5d RS |
2645 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2646 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2647 | usage: (run-hook-with-args-until-success HOOK &rest ARGS) */) |
2648 | (nargs, args) | |
b0b667cb KH |
2649 | int nargs; |
2650 | Lisp_Object *args; | |
2651 | { | |
ff936e53 SM |
2652 | return run_hook_with_args (nargs, args, until_success); |
2653 | } | |
2654 | ||
a0d76c27 | 2655 | DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure, |
9dbc9081 PJ |
2656 | Srun_hook_with_args_until_failure, 1, MANY, 0, |
2657 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2658 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2659 | value, that value may be a function or a list of functions to be | |
2660 | called to run the hook. If the value is a function, it is called with | |
2661 | the given arguments and its return value is returned. | |
2662 | If it is a list of functions, those functions are called, in order, | |
2663 | with the given arguments ARGS, until one of them returns nil. | |
2664 | Then we return nil. However, if they all return non-nil, we return non-nil. | |
9dbc9081 | 2665 | |
72e85d5d RS |
2666 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2667 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2668 | usage: (run-hook-with-args-until-failure HOOK &rest ARGS) */) |
2669 | (nargs, args) | |
ff936e53 SM |
2670 | int nargs; |
2671 | Lisp_Object *args; | |
2672 | { | |
2673 | return run_hook_with_args (nargs, args, until_failure); | |
2674 | } | |
2675 | ||
c933ea05 RS |
2676 | /* ARGS[0] should be a hook symbol. |
2677 | Call each of the functions in the hook value, passing each of them | |
2678 | as arguments all the rest of ARGS (all NARGS - 1 elements). | |
2679 | COND specifies a condition to test after each call | |
2680 | to decide whether to stop. | |
2681 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2682 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2683 | ||
2901f1d1 | 2684 | static Lisp_Object |
ff936e53 SM |
2685 | run_hook_with_args (nargs, args, cond) |
2686 | int nargs; | |
2687 | Lisp_Object *args; | |
2688 | enum run_hooks_condition cond; | |
2689 | { | |
2690 | Lisp_Object sym, val, ret; | |
fada05d6 | 2691 | struct gcpro gcpro1, gcpro2, gcpro3; |
b0b667cb | 2692 | |
f029ca5f RS |
2693 | /* If we are dying or still initializing, |
2694 | don't do anything--it would probably crash if we tried. */ | |
2695 | if (NILP (Vrun_hooks)) | |
caff32a7 | 2696 | return Qnil; |
f029ca5f | 2697 | |
b0b667cb | 2698 | sym = args[0]; |
aa681b51 | 2699 | val = find_symbol_value (sym); |
ff936e53 SM |
2700 | ret = (cond == until_failure ? Qt : Qnil); |
2701 | ||
b0b667cb | 2702 | if (EQ (val, Qunbound) || NILP (val)) |
ff936e53 | 2703 | return ret; |
03699b14 | 2704 | else if (!CONSP (val) || EQ (XCAR (val), Qlambda)) |
b0b667cb KH |
2705 | { |
2706 | args[0] = val; | |
2707 | return Ffuncall (nargs, args); | |
2708 | } | |
2709 | else | |
2710 | { | |
8932b1c2 | 2711 | Lisp_Object globals = Qnil; |
fada05d6 | 2712 | GCPRO3 (sym, val, globals); |
cb9d21f8 | 2713 | |
ff936e53 SM |
2714 | for (; |
2715 | CONSP (val) && ((cond == to_completion) | |
2716 | || (cond == until_success ? NILP (ret) | |
2717 | : !NILP (ret))); | |
03699b14 | 2718 | val = XCDR (val)) |
b0b667cb | 2719 | { |
03699b14 | 2720 | if (EQ (XCAR (val), Qt)) |
b0b667cb KH |
2721 | { |
2722 | /* t indicates this hook has a local binding; | |
2723 | it means to run the global binding too. */ | |
8932b1c2 CY |
2724 | globals = Fdefault_value (sym); |
2725 | if (NILP (globals)) continue; | |
b0b667cb | 2726 | |
8932b1c2 | 2727 | if (!CONSP (globals) || EQ (XCAR (globals), Qlambda)) |
b0b667cb | 2728 | { |
8932b1c2 CY |
2729 | args[0] = globals; |
2730 | ret = Ffuncall (nargs, args); | |
2731 | } | |
2732 | else | |
2733 | { | |
2734 | for (; | |
2735 | CONSP (globals) && ((cond == to_completion) | |
2736 | || (cond == until_success ? NILP (ret) | |
2737 | : !NILP (ret))); | |
2738 | globals = XCDR (globals)) | |
2739 | { | |
2740 | args[0] = XCAR (globals); | |
2741 | /* In a global value, t should not occur. If it does, we | |
2742 | must ignore it to avoid an endless loop. */ | |
2743 | if (!EQ (args[0], Qt)) | |
2744 | ret = Ffuncall (nargs, args); | |
2745 | } | |
b0b667cb KH |
2746 | } |
2747 | } | |
2748 | else | |
2749 | { | |
03699b14 | 2750 | args[0] = XCAR (val); |
ff936e53 | 2751 | ret = Ffuncall (nargs, args); |
b0b667cb KH |
2752 | } |
2753 | } | |
cb9d21f8 RS |
2754 | |
2755 | UNGCPRO; | |
ff936e53 | 2756 | return ret; |
b0b667cb KH |
2757 | } |
2758 | } | |
c933ea05 RS |
2759 | |
2760 | /* Run a hook symbol ARGS[0], but use FUNLIST instead of the actual | |
2761 | present value of that symbol. | |
2762 | Call each element of FUNLIST, | |
2763 | passing each of them the rest of ARGS. | |
2764 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2765 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2766 | ||
2767 | Lisp_Object | |
2768 | run_hook_list_with_args (funlist, nargs, args) | |
2769 | Lisp_Object funlist; | |
2770 | int nargs; | |
2771 | Lisp_Object *args; | |
2772 | { | |
2773 | Lisp_Object sym; | |
2774 | Lisp_Object val; | |
fada05d6 KH |
2775 | Lisp_Object globals; |
2776 | struct gcpro gcpro1, gcpro2, gcpro3; | |
c933ea05 RS |
2777 | |
2778 | sym = args[0]; | |
fada05d6 KH |
2779 | globals = Qnil; |
2780 | GCPRO3 (sym, val, globals); | |
c933ea05 | 2781 | |
03699b14 | 2782 | for (val = funlist; CONSP (val); val = XCDR (val)) |
c933ea05 | 2783 | { |
03699b14 | 2784 | if (EQ (XCAR (val), Qt)) |
c933ea05 RS |
2785 | { |
2786 | /* t indicates this hook has a local binding; | |
2787 | it means to run the global binding too. */ | |
c933ea05 RS |
2788 | |
2789 | for (globals = Fdefault_value (sym); | |
2790 | CONSP (globals); | |
03699b14 | 2791 | globals = XCDR (globals)) |
c933ea05 | 2792 | { |
03699b14 | 2793 | args[0] = XCAR (globals); |
77d92e05 RS |
2794 | /* In a global value, t should not occur. If it does, we |
2795 | must ignore it to avoid an endless loop. */ | |
2796 | if (!EQ (args[0], Qt)) | |
2797 | Ffuncall (nargs, args); | |
c933ea05 RS |
2798 | } |
2799 | } | |
2800 | else | |
2801 | { | |
03699b14 | 2802 | args[0] = XCAR (val); |
c933ea05 RS |
2803 | Ffuncall (nargs, args); |
2804 | } | |
2805 | } | |
2806 | UNGCPRO; | |
2807 | return Qnil; | |
2808 | } | |
7d48558f RS |
2809 | |
2810 | /* Run the hook HOOK, giving each function the two args ARG1 and ARG2. */ | |
2811 | ||
2812 | void | |
2813 | run_hook_with_args_2 (hook, arg1, arg2) | |
2814 | Lisp_Object hook, arg1, arg2; | |
2815 | { | |
2816 | Lisp_Object temp[3]; | |
2817 | temp[0] = hook; | |
2818 | temp[1] = arg1; | |
2819 | temp[2] = arg2; | |
2820 | ||
2821 | Frun_hook_with_args (3, temp); | |
2822 | } | |
ff936e53 | 2823 | \f |
db9f0278 JB |
2824 | /* Apply fn to arg */ |
2825 | Lisp_Object | |
2826 | apply1 (fn, arg) | |
2827 | Lisp_Object fn, arg; | |
2828 | { | |
a6e3fa71 JB |
2829 | struct gcpro gcpro1; |
2830 | ||
2831 | GCPRO1 (fn); | |
265a9e55 | 2832 | if (NILP (arg)) |
a6e3fa71 JB |
2833 | RETURN_UNGCPRO (Ffuncall (1, &fn)); |
2834 | gcpro1.nvars = 2; | |
db9f0278 JB |
2835 | { |
2836 | Lisp_Object args[2]; | |
2837 | args[0] = fn; | |
2838 | args[1] = arg; | |
a6e3fa71 JB |
2839 | gcpro1.var = args; |
2840 | RETURN_UNGCPRO (Fapply (2, args)); | |
db9f0278 | 2841 | } |
db9f0278 JB |
2842 | } |
2843 | ||
2844 | /* Call function fn on no arguments */ | |
2845 | Lisp_Object | |
2846 | call0 (fn) | |
2847 | Lisp_Object fn; | |
2848 | { | |
a6e3fa71 JB |
2849 | struct gcpro gcpro1; |
2850 | ||
2851 | GCPRO1 (fn); | |
2852 | RETURN_UNGCPRO (Ffuncall (1, &fn)); | |
db9f0278 JB |
2853 | } |
2854 | ||
15285f9f | 2855 | /* Call function fn with 1 argument arg1 */ |
db9f0278 JB |
2856 | /* ARGSUSED */ |
2857 | Lisp_Object | |
15285f9f RS |
2858 | call1 (fn, arg1) |
2859 | Lisp_Object fn, arg1; | |
db9f0278 | 2860 | { |
a6e3fa71 | 2861 | struct gcpro gcpro1; |
177c0ea7 | 2862 | Lisp_Object args[2]; |
a6e3fa71 | 2863 | |
db9f0278 | 2864 | args[0] = fn; |
15285f9f | 2865 | args[1] = arg1; |
a6e3fa71 JB |
2866 | GCPRO1 (args[0]); |
2867 | gcpro1.nvars = 2; | |
2868 | RETURN_UNGCPRO (Ffuncall (2, args)); | |
db9f0278 JB |
2869 | } |
2870 | ||
15285f9f | 2871 | /* Call function fn with 2 arguments arg1, arg2 */ |
db9f0278 JB |
2872 | /* ARGSUSED */ |
2873 | Lisp_Object | |
15285f9f RS |
2874 | call2 (fn, arg1, arg2) |
2875 | Lisp_Object fn, arg1, arg2; | |
db9f0278 | 2876 | { |
a6e3fa71 | 2877 | struct gcpro gcpro1; |
db9f0278 JB |
2878 | Lisp_Object args[3]; |
2879 | args[0] = fn; | |
15285f9f RS |
2880 | args[1] = arg1; |
2881 | args[2] = arg2; | |
a6e3fa71 JB |
2882 | GCPRO1 (args[0]); |
2883 | gcpro1.nvars = 3; | |
2884 | RETURN_UNGCPRO (Ffuncall (3, args)); | |
db9f0278 JB |
2885 | } |
2886 | ||
15285f9f | 2887 | /* Call function fn with 3 arguments arg1, arg2, arg3 */ |
db9f0278 JB |
2888 | /* ARGSUSED */ |
2889 | Lisp_Object | |
15285f9f RS |
2890 | call3 (fn, arg1, arg2, arg3) |
2891 | Lisp_Object fn, arg1, arg2, arg3; | |
db9f0278 | 2892 | { |
a6e3fa71 | 2893 | struct gcpro gcpro1; |
db9f0278 JB |
2894 | Lisp_Object args[4]; |
2895 | args[0] = fn; | |
15285f9f RS |
2896 | args[1] = arg1; |
2897 | args[2] = arg2; | |
2898 | args[3] = arg3; | |
a6e3fa71 JB |
2899 | GCPRO1 (args[0]); |
2900 | gcpro1.nvars = 4; | |
2901 | RETURN_UNGCPRO (Ffuncall (4, args)); | |
db9f0278 JB |
2902 | } |
2903 | ||
15285f9f | 2904 | /* Call function fn with 4 arguments arg1, arg2, arg3, arg4 */ |
a5a44b91 JB |
2905 | /* ARGSUSED */ |
2906 | Lisp_Object | |
15285f9f RS |
2907 | call4 (fn, arg1, arg2, arg3, arg4) |
2908 | Lisp_Object fn, arg1, arg2, arg3, arg4; | |
a5a44b91 JB |
2909 | { |
2910 | struct gcpro gcpro1; | |
a5a44b91 JB |
2911 | Lisp_Object args[5]; |
2912 | args[0] = fn; | |
15285f9f RS |
2913 | args[1] = arg1; |
2914 | args[2] = arg2; | |
2915 | args[3] = arg3; | |
2916 | args[4] = arg4; | |
a5a44b91 JB |
2917 | GCPRO1 (args[0]); |
2918 | gcpro1.nvars = 5; | |
2919 | RETURN_UNGCPRO (Ffuncall (5, args)); | |
a5a44b91 JB |
2920 | } |
2921 | ||
15285f9f RS |
2922 | /* Call function fn with 5 arguments arg1, arg2, arg3, arg4, arg5 */ |
2923 | /* ARGSUSED */ | |
2924 | Lisp_Object | |
2925 | call5 (fn, arg1, arg2, arg3, arg4, arg5) | |
2926 | Lisp_Object fn, arg1, arg2, arg3, arg4, arg5; | |
2927 | { | |
2928 | struct gcpro gcpro1; | |
15285f9f RS |
2929 | Lisp_Object args[6]; |
2930 | args[0] = fn; | |
2931 | args[1] = arg1; | |
2932 | args[2] = arg2; | |
2933 | args[3] = arg3; | |
2934 | args[4] = arg4; | |
2935 | args[5] = arg5; | |
2936 | GCPRO1 (args[0]); | |
2937 | gcpro1.nvars = 6; | |
2938 | RETURN_UNGCPRO (Ffuncall (6, args)); | |
15285f9f RS |
2939 | } |
2940 | ||
2941 | /* Call function fn with 6 arguments arg1, arg2, arg3, arg4, arg5, arg6 */ | |
2942 | /* ARGSUSED */ | |
2943 | Lisp_Object | |
2944 | call6 (fn, arg1, arg2, arg3, arg4, arg5, arg6) | |
2945 | Lisp_Object fn, arg1, arg2, arg3, arg4, arg5, arg6; | |
2946 | { | |
2947 | struct gcpro gcpro1; | |
15285f9f RS |
2948 | Lisp_Object args[7]; |
2949 | args[0] = fn; | |
2950 | args[1] = arg1; | |
2951 | args[2] = arg2; | |
2952 | args[3] = arg3; | |
2953 | args[4] = arg4; | |
2954 | args[5] = arg5; | |
2955 | args[6] = arg6; | |
2956 | GCPRO1 (args[0]); | |
2957 | gcpro1.nvars = 7; | |
2958 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
15285f9f RS |
2959 | } |
2960 | ||
574c05e2 KK |
2961 | /* Call function fn with 7 arguments arg1, arg2, arg3, arg4, arg5, arg6, arg7 */ |
2962 | /* ARGSUSED */ | |
2963 | Lisp_Object | |
2964 | call7 (fn, arg1, arg2, arg3, arg4, arg5, arg6, arg7) | |
2965 | Lisp_Object fn, arg1, arg2, arg3, arg4, arg5, arg6, arg7; | |
2966 | { | |
2967 | struct gcpro gcpro1; | |
574c05e2 KK |
2968 | Lisp_Object args[8]; |
2969 | args[0] = fn; | |
2970 | args[1] = arg1; | |
2971 | args[2] = arg2; | |
2972 | args[3] = arg3; | |
2973 | args[4] = arg4; | |
2974 | args[5] = arg5; | |
2975 | args[6] = arg6; | |
2976 | args[7] = arg7; | |
2977 | GCPRO1 (args[0]); | |
2978 | gcpro1.nvars = 8; | |
2979 | RETURN_UNGCPRO (Ffuncall (8, args)); | |
574c05e2 KK |
2980 | } |
2981 | ||
6c2ef893 RS |
2982 | /* The caller should GCPRO all the elements of ARGS. */ |
2983 | ||
db9f0278 | 2984 | DEFUN ("funcall", Ffuncall, Sfuncall, 1, MANY, 0, |
9dbc9081 PJ |
2985 | doc: /* Call first argument as a function, passing remaining arguments to it. |
2986 | Return the value that function returns. | |
2987 | Thus, (funcall 'cons 'x 'y) returns (x . y). | |
2988 | usage: (funcall FUNCTION &rest ARGUMENTS) */) | |
2989 | (nargs, args) | |
db9f0278 JB |
2990 | int nargs; |
2991 | Lisp_Object *args; | |
2992 | { | |
8788120f | 2993 | Lisp_Object fun, original_fun; |
db9f0278 JB |
2994 | Lisp_Object funcar; |
2995 | int numargs = nargs - 1; | |
2996 | Lisp_Object lisp_numargs; | |
2997 | Lisp_Object val; | |
2998 | struct backtrace backtrace; | |
2999 | register Lisp_Object *internal_args; | |
3000 | register int i; | |
3001 | ||
3002 | QUIT; | |
ee830945 RS |
3003 | if ((consing_since_gc > gc_cons_threshold |
3004 | && consing_since_gc > gc_relative_threshold) | |
3005 | || | |
3006 | (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold)) | |
a6e3fa71 | 3007 | Fgarbage_collect (); |
db9f0278 JB |
3008 | |
3009 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
3010 | { | |
3011 | if (max_lisp_eval_depth < 100) | |
3012 | max_lisp_eval_depth = 100; | |
3013 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 3014 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
3015 | } |
3016 | ||
3017 | backtrace.next = backtrace_list; | |
3018 | backtrace_list = &backtrace; | |
3019 | backtrace.function = &args[0]; | |
3020 | backtrace.args = &args[1]; | |
3021 | backtrace.nargs = nargs - 1; | |
3022 | backtrace.evalargs = 0; | |
3023 | backtrace.debug_on_exit = 0; | |
3024 | ||
3025 | if (debug_on_next_call) | |
3026 | do_debug_on_call (Qlambda); | |
3027 | ||
fff3ff9c KS |
3028 | CHECK_CONS_LIST (); |
3029 | ||
8788120f KS |
3030 | original_fun = args[0]; |
3031 | ||
db9f0278 JB |
3032 | retry: |
3033 | ||
8788120f KS |
3034 | /* Optimize for no indirection. */ |
3035 | fun = original_fun; | |
3036 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
3037 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
3038 | fun = indirect_function (fun); | |
db9f0278 | 3039 | |
90165123 | 3040 | if (SUBRP (fun)) |
db9f0278 | 3041 | { |
fff3ff9c | 3042 | if (numargs < XSUBR (fun)->min_args |
db9f0278 JB |
3043 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) |
3044 | { | |
a631e24c | 3045 | XSETFASTINT (lisp_numargs, numargs); |
734d55a2 | 3046 | xsignal2 (Qwrong_number_of_arguments, original_fun, lisp_numargs); |
db9f0278 JB |
3047 | } |
3048 | ||
3049 | if (XSUBR (fun)->max_args == UNEVALLED) | |
734d55a2 | 3050 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
3051 | |
3052 | if (XSUBR (fun)->max_args == MANY) | |
3053 | { | |
3054 | val = (*XSUBR (fun)->function) (numargs, args + 1); | |
3055 | goto done; | |
3056 | } | |
3057 | ||
3058 | if (XSUBR (fun)->max_args > numargs) | |
3059 | { | |
3060 | internal_args = (Lisp_Object *) alloca (XSUBR (fun)->max_args * sizeof (Lisp_Object)); | |
3061 | bcopy (args + 1, internal_args, numargs * sizeof (Lisp_Object)); | |
3062 | for (i = numargs; i < XSUBR (fun)->max_args; i++) | |
3063 | internal_args[i] = Qnil; | |
3064 | } | |
3065 | else | |
3066 | internal_args = args + 1; | |
3067 | switch (XSUBR (fun)->max_args) | |
3068 | { | |
3069 | case 0: | |
3070 | val = (*XSUBR (fun)->function) (); | |
3071 | goto done; | |
3072 | case 1: | |
3073 | val = (*XSUBR (fun)->function) (internal_args[0]); | |
3074 | goto done; | |
3075 | case 2: | |
82fc29a1 | 3076 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1]); |
db9f0278 JB |
3077 | goto done; |
3078 | case 3: | |
3079 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
3080 | internal_args[2]); | |
3081 | goto done; | |
3082 | case 4: | |
3083 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
82fc29a1 | 3084 | internal_args[2], internal_args[3]); |
db9f0278 JB |
3085 | goto done; |
3086 | case 5: | |
3087 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
3088 | internal_args[2], internal_args[3], | |
3089 | internal_args[4]); | |
3090 | goto done; | |
3091 | case 6: | |
3092 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
3093 | internal_args[2], internal_args[3], | |
3094 | internal_args[4], internal_args[5]); | |
3095 | goto done; | |
15c65264 RS |
3096 | case 7: |
3097 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
3098 | internal_args[2], internal_args[3], | |
3099 | internal_args[4], internal_args[5], | |
3100 | internal_args[6]); | |
3101 | goto done; | |
db9f0278 | 3102 | |
166c822d KH |
3103 | case 8: |
3104 | val = (*XSUBR (fun)->function) (internal_args[0], internal_args[1], | |
3105 | internal_args[2], internal_args[3], | |
3106 | internal_args[4], internal_args[5], | |
3107 | internal_args[6], internal_args[7]); | |
3108 | goto done; | |
3109 | ||
db9f0278 | 3110 | default: |
70ee42f7 | 3111 | |
166c822d | 3112 | /* If a subr takes more than 8 arguments without using MANY |
177c0ea7 | 3113 | or UNEVALLED, we need to extend this function to support it. |
70ee42f7 JB |
3114 | Until this is done, there is no way to call the function. */ |
3115 | abort (); | |
db9f0278 JB |
3116 | } |
3117 | } | |
90165123 | 3118 | if (COMPILEDP (fun)) |
db9f0278 JB |
3119 | val = funcall_lambda (fun, numargs, args + 1); |
3120 | else | |
3121 | { | |
8788120f | 3122 | if (EQ (fun, Qunbound)) |
734d55a2 | 3123 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 3124 | if (!CONSP (fun)) |
734d55a2 KS |
3125 | xsignal1 (Qinvalid_function, original_fun); |
3126 | funcar = XCAR (fun); | |
90165123 | 3127 | if (!SYMBOLP (funcar)) |
734d55a2 | 3128 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
3129 | if (EQ (funcar, Qlambda)) |
3130 | val = funcall_lambda (fun, numargs, args + 1); | |
db9f0278 JB |
3131 | else if (EQ (funcar, Qautoload)) |
3132 | { | |
8788120f | 3133 | do_autoload (fun, original_fun); |
fff3ff9c | 3134 | CHECK_CONS_LIST (); |
db9f0278 JB |
3135 | goto retry; |
3136 | } | |
3137 | else | |
734d55a2 | 3138 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
3139 | } |
3140 | done: | |
c1788fbc | 3141 | CHECK_CONS_LIST (); |
db9f0278 JB |
3142 | lisp_eval_depth--; |
3143 | if (backtrace.debug_on_exit) | |
3144 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
3145 | backtrace_list = backtrace.next; | |
3146 | return val; | |
3147 | } | |
3148 | \f | |
3149 | Lisp_Object | |
3150 | apply_lambda (fun, args, eval_flag) | |
3151 | Lisp_Object fun, args; | |
3152 | int eval_flag; | |
3153 | { | |
3154 | Lisp_Object args_left; | |
3155 | Lisp_Object numargs; | |
3156 | register Lisp_Object *arg_vector; | |
3157 | struct gcpro gcpro1, gcpro2, gcpro3; | |
3158 | register int i; | |
3159 | register Lisp_Object tem; | |
3160 | ||
3161 | numargs = Flength (args); | |
3162 | arg_vector = (Lisp_Object *) alloca (XINT (numargs) * sizeof (Lisp_Object)); | |
3163 | args_left = args; | |
3164 | ||
3165 | GCPRO3 (*arg_vector, args_left, fun); | |
3166 | gcpro1.nvars = 0; | |
3167 | ||
3168 | for (i = 0; i < XINT (numargs);) | |
3169 | { | |
3170 | tem = Fcar (args_left), args_left = Fcdr (args_left); | |
3171 | if (eval_flag) tem = Feval (tem); | |
3172 | arg_vector[i++] = tem; | |
3173 | gcpro1.nvars = i; | |
3174 | } | |
3175 | ||
3176 | UNGCPRO; | |
3177 | ||
3178 | if (eval_flag) | |
3179 | { | |
3180 | backtrace_list->args = arg_vector; | |
3181 | backtrace_list->nargs = i; | |
3182 | } | |
3183 | backtrace_list->evalargs = 0; | |
3184 | tem = funcall_lambda (fun, XINT (numargs), arg_vector); | |
3185 | ||
3186 | /* Do the debug-on-exit now, while arg_vector still exists. */ | |
3187 | if (backtrace_list->debug_on_exit) | |
3188 | tem = call_debugger (Fcons (Qexit, Fcons (tem, Qnil))); | |
3189 | /* Don't do it again when we return to eval. */ | |
3190 | backtrace_list->debug_on_exit = 0; | |
3191 | return tem; | |
3192 | } | |
3193 | ||
3194 | /* Apply a Lisp function FUN to the NARGS evaluated arguments in ARG_VECTOR | |
3195 | and return the result of evaluation. | |
3196 | FUN must be either a lambda-expression or a compiled-code object. */ | |
3197 | ||
2901f1d1 | 3198 | static Lisp_Object |
db9f0278 JB |
3199 | funcall_lambda (fun, nargs, arg_vector) |
3200 | Lisp_Object fun; | |
3201 | int nargs; | |
3202 | register Lisp_Object *arg_vector; | |
3203 | { | |
9ab90667 | 3204 | Lisp_Object val, syms_left, next; |
aed13378 | 3205 | int count = SPECPDL_INDEX (); |
9ab90667 | 3206 | int i, optional, rest; |
db9f0278 | 3207 | |
90165123 | 3208 | if (CONSP (fun)) |
9ab90667 GM |
3209 | { |
3210 | syms_left = XCDR (fun); | |
3211 | if (CONSP (syms_left)) | |
3212 | syms_left = XCAR (syms_left); | |
3213 | else | |
734d55a2 | 3214 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 3215 | } |
90165123 | 3216 | else if (COMPILEDP (fun)) |
845975f5 | 3217 | syms_left = AREF (fun, COMPILED_ARGLIST); |
9ab90667 GM |
3218 | else |
3219 | abort (); | |
db9f0278 | 3220 | |
9ab90667 GM |
3221 | i = optional = rest = 0; |
3222 | for (; CONSP (syms_left); syms_left = XCDR (syms_left)) | |
db9f0278 JB |
3223 | { |
3224 | QUIT; | |
177c0ea7 | 3225 | |
9ab90667 | 3226 | next = XCAR (syms_left); |
8788120f | 3227 | if (!SYMBOLP (next)) |
734d55a2 | 3228 | xsignal1 (Qinvalid_function, fun); |
177c0ea7 | 3229 | |
db9f0278 JB |
3230 | if (EQ (next, Qand_rest)) |
3231 | rest = 1; | |
3232 | else if (EQ (next, Qand_optional)) | |
3233 | optional = 1; | |
3234 | else if (rest) | |
3235 | { | |
9ffa21d4 | 3236 | specbind (next, Flist (nargs - i, &arg_vector[i])); |
db9f0278 JB |
3237 | i = nargs; |
3238 | } | |
3239 | else if (i < nargs) | |
9ab90667 | 3240 | specbind (next, arg_vector[i++]); |
db9f0278 | 3241 | else if (!optional) |
734d55a2 | 3242 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 JB |
3243 | else |
3244 | specbind (next, Qnil); | |
3245 | } | |
3246 | ||
9ab90667 | 3247 | if (!NILP (syms_left)) |
734d55a2 | 3248 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 3249 | else if (i < nargs) |
734d55a2 | 3250 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 | 3251 | |
90165123 | 3252 | if (CONSP (fun)) |
9ab90667 | 3253 | val = Fprogn (XCDR (XCDR (fun))); |
db9f0278 | 3254 | else |
ca248607 RS |
3255 | { |
3256 | /* If we have not actually read the bytecode string | |
3257 | and constants vector yet, fetch them from the file. */ | |
845975f5 | 3258 | if (CONSP (AREF (fun, COMPILED_BYTECODE))) |
661c7d6e | 3259 | Ffetch_bytecode (fun); |
845975f5 SM |
3260 | val = Fbyte_code (AREF (fun, COMPILED_BYTECODE), |
3261 | AREF (fun, COMPILED_CONSTANTS), | |
3262 | AREF (fun, COMPILED_STACK_DEPTH)); | |
ca248607 | 3263 | } |
177c0ea7 | 3264 | |
db9f0278 JB |
3265 | return unbind_to (count, val); |
3266 | } | |
661c7d6e KH |
3267 | |
3268 | DEFUN ("fetch-bytecode", Ffetch_bytecode, Sfetch_bytecode, | |
9dbc9081 PJ |
3269 | 1, 1, 0, |
3270 | doc: /* If byte-compiled OBJECT is lazy-loaded, fetch it now. */) | |
3271 | (object) | |
661c7d6e KH |
3272 | Lisp_Object object; |
3273 | { | |
3274 | Lisp_Object tem; | |
3275 | ||
845975f5 | 3276 | if (COMPILEDP (object) && CONSP (AREF (object, COMPILED_BYTECODE))) |
661c7d6e | 3277 | { |
845975f5 | 3278 | tem = read_doc_string (AREF (object, COMPILED_BYTECODE)); |
5bbdb090 | 3279 | if (!CONSP (tem)) |
845975f5 SM |
3280 | { |
3281 | tem = AREF (object, COMPILED_BYTECODE); | |
3282 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
d5db4077 | 3283 | error ("Invalid byte code in %s", SDATA (XCAR (tem))); |
845975f5 SM |
3284 | else |
3285 | error ("Invalid byte code"); | |
3286 | } | |
3ae565b3 SM |
3287 | ASET (object, COMPILED_BYTECODE, XCAR (tem)); |
3288 | ASET (object, COMPILED_CONSTANTS, XCDR (tem)); | |
661c7d6e KH |
3289 | } |
3290 | return object; | |
3291 | } | |
db9f0278 JB |
3292 | \f |
3293 | void | |
3294 | grow_specpdl () | |
3295 | { | |
aed13378 | 3296 | register int count = SPECPDL_INDEX (); |
db9f0278 JB |
3297 | if (specpdl_size >= max_specpdl_size) |
3298 | { | |
3299 | if (max_specpdl_size < 400) | |
3300 | max_specpdl_size = 400; | |
3301 | if (specpdl_size >= max_specpdl_size) | |
734d55a2 | 3302 | signal_error ("Variable binding depth exceeds max-specpdl-size", Qnil); |
db9f0278 JB |
3303 | } |
3304 | specpdl_size *= 2; | |
3305 | if (specpdl_size > max_specpdl_size) | |
3306 | specpdl_size = max_specpdl_size; | |
3307 | specpdl = (struct specbinding *) xrealloc (specpdl, specpdl_size * sizeof (struct specbinding)); | |
3308 | specpdl_ptr = specpdl + count; | |
3309 | } | |
3310 | ||
4e2db1fe SM |
3311 | /* specpdl_ptr->symbol is a field which describes which variable is |
3312 | let-bound, so it can be properly undone when we unbind_to. | |
3313 | It can have the following two shapes: | |
3314 | - SYMBOL : if it's a plain symbol, it means that we have let-bound | |
3315 | a symbol that is not buffer-local (at least at the time | |
3316 | the let binding started). Note also that it should not be | |
3317 | aliased (i.e. when let-binding V1 that's aliased to V2, we want | |
3318 | to record V2 here). | |
3319 | - (SYMBOL WHERE . BUFFER) : this means that it is a let-binding for | |
3320 | variable SYMBOL which can be buffer-local. WHERE tells us | |
3321 | which buffer is affected (or nil if the let-binding affects the | |
3322 | global value of the variable) and BUFFER tells us which buffer was | |
3323 | current (i.e. if WHERE is non-nil, then BUFFER==WHERE, otherwise | |
3324 | BUFFER did not yet have a buffer-local value). */ | |
3325 | ||
db9f0278 JB |
3326 | void |
3327 | specbind (symbol, value) | |
3328 | Lisp_Object symbol, value; | |
3329 | { | |
ce5b453a SM |
3330 | struct Lisp_Symbol *sym; |
3331 | ||
3332 | eassert (!handling_signal); | |
db9f0278 | 3333 | |
b7826503 | 3334 | CHECK_SYMBOL (symbol); |
ce5b453a | 3335 | sym = XSYMBOL (symbol); |
db9f0278 JB |
3336 | if (specpdl_ptr == specpdl + specpdl_size) |
3337 | grow_specpdl (); | |
719177b3 | 3338 | |
ce5b453a SM |
3339 | start: |
3340 | switch (sym->redirect) | |
719177b3 | 3341 | { |
ce5b453a SM |
3342 | case SYMBOL_VARALIAS: |
3343 | sym = indirect_variable (sym); XSETSYMBOL (symbol, sym); goto start; | |
3344 | case SYMBOL_PLAINVAL: | |
3345 | { /* The most common case is that of a non-constant symbol with a | |
3346 | trivial value. Make that as fast as we can. */ | |
3347 | specpdl_ptr->symbol = symbol; | |
3348 | specpdl_ptr->old_value = SYMBOL_VAL (sym); | |
3349 | specpdl_ptr->func = NULL; | |
3350 | ++specpdl_ptr; | |
3351 | if (!sym->constant) | |
3352 | SET_SYMBOL_VAL (sym, value); | |
eb700b82 | 3353 | else |
94b612ad | 3354 | set_internal (symbol, value, Qnil, 1); |
ce5b453a | 3355 | break; |
9ab90667 | 3356 | } |
4e2db1fe SM |
3357 | case SYMBOL_LOCALIZED: |
3358 | if (SYMBOL_BLV (sym)->frame_local) | |
3359 | error ("Frame-local vars cannot be let-bound"); | |
3360 | case SYMBOL_FORWARDED: | |
ce5b453a SM |
3361 | { |
3362 | Lisp_Object ovalue = find_symbol_value (symbol); | |
3363 | specpdl_ptr->func = 0; | |
3364 | specpdl_ptr->old_value = ovalue; | |
3365 | ||
3366 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3367 | || (EQ (SYMBOL_BLV (sym)->where, | |
3368 | SYMBOL_BLV (sym)->frame_local ? | |
3369 | Fselected_frame () : Fcurrent_buffer ()))); | |
3370 | ||
3371 | if (sym->redirect == SYMBOL_LOCALIZED | |
3372 | || BUFFER_OBJFWDP (SYMBOL_FWD (sym))) | |
3373 | { | |
3374 | Lisp_Object where, cur_buf = Fcurrent_buffer (); | |
3375 | ||
3376 | /* For a local variable, record both the symbol and which | |
3377 | buffer's or frame's value we are saving. */ | |
3378 | if (!NILP (Flocal_variable_p (symbol, Qnil))) | |
3379 | { | |
3380 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3381 | || (BLV_FOUND (SYMBOL_BLV (sym)) | |
3382 | && EQ (cur_buf, SYMBOL_BLV (sym)->where))); | |
3383 | where = cur_buf; | |
3384 | } | |
3385 | else if (sym->redirect == SYMBOL_LOCALIZED | |
3386 | && BLV_FOUND (SYMBOL_BLV (sym))) | |
3387 | where = SYMBOL_BLV (sym)->where; | |
3388 | else | |
3389 | where = Qnil; | |
3390 | ||
3391 | /* We're not using the `unused' slot in the specbinding | |
3392 | structure because this would mean we have to do more | |
3393 | work for simple variables. */ | |
3394 | /* FIXME: The third value `current_buffer' is only used in | |
3395 | let_shadows_buffer_binding_p which is itself only used | |
3396 | in set_internal for local_if_set. */ | |
4e2db1fe | 3397 | eassert (NILP (where) || EQ (where, cur_buf)); |
ce5b453a SM |
3398 | specpdl_ptr->symbol = Fcons (symbol, Fcons (where, cur_buf)); |
3399 | ||
3400 | /* If SYMBOL is a per-buffer variable which doesn't have a | |
3401 | buffer-local value here, make the `let' change the global | |
3402 | value by changing the value of SYMBOL in all buffers not | |
3403 | having their own value. This is consistent with what | |
3404 | happens with other buffer-local variables. */ | |
3405 | if (NILP (where) | |
3406 | && sym->redirect == SYMBOL_FORWARDED) | |
3407 | { | |
3408 | eassert (BUFFER_OBJFWDP (SYMBOL_FWD (sym))); | |
3409 | ++specpdl_ptr; | |
3410 | Fset_default (symbol, value); | |
3411 | return; | |
3412 | } | |
3413 | } | |
3414 | else | |
3415 | specpdl_ptr->symbol = symbol; | |
3416 | ||
3417 | specpdl_ptr++; | |
94b612ad | 3418 | set_internal (symbol, value, Qnil, 1); |
ce5b453a SM |
3419 | break; |
3420 | } | |
3421 | default: abort (); | |
9ab90667 | 3422 | } |
db9f0278 JB |
3423 | } |
3424 | ||
3425 | void | |
3426 | record_unwind_protect (function, arg) | |
1d159538 | 3427 | Lisp_Object (*function) P_ ((Lisp_Object)); |
db9f0278 JB |
3428 | Lisp_Object arg; |
3429 | { | |
9ba8e10d CY |
3430 | eassert (!handling_signal); |
3431 | ||
db9f0278 JB |
3432 | if (specpdl_ptr == specpdl + specpdl_size) |
3433 | grow_specpdl (); | |
3434 | specpdl_ptr->func = function; | |
3435 | specpdl_ptr->symbol = Qnil; | |
3436 | specpdl_ptr->old_value = arg; | |
3437 | specpdl_ptr++; | |
3438 | } | |
3439 | ||
3440 | Lisp_Object | |
3441 | unbind_to (count, value) | |
3442 | int count; | |
3443 | Lisp_Object value; | |
3444 | { | |
5a073f50 KS |
3445 | Lisp_Object quitf = Vquit_flag; |
3446 | struct gcpro gcpro1, gcpro2; | |
db9f0278 | 3447 | |
5a073f50 | 3448 | GCPRO2 (value, quitf); |
db9f0278 JB |
3449 | Vquit_flag = Qnil; |
3450 | ||
3451 | while (specpdl_ptr != specpdl + count) | |
3452 | { | |
611a8f8c RS |
3453 | /* Copy the binding, and decrement specpdl_ptr, before we do |
3454 | the work to unbind it. We decrement first | |
3455 | so that an error in unbinding won't try to unbind | |
3456 | the same entry again, and we copy the binding first | |
3457 | in case more bindings are made during some of the code we run. */ | |
eb700b82 | 3458 | |
45f266dc DL |
3459 | struct specbinding this_binding; |
3460 | this_binding = *--specpdl_ptr; | |
611a8f8c RS |
3461 | |
3462 | if (this_binding.func != 0) | |
3463 | (*this_binding.func) (this_binding.old_value); | |
0967b4b0 GM |
3464 | /* If the symbol is a list, it is really (SYMBOL WHERE |
3465 | . CURRENT-BUFFER) where WHERE is either nil, a buffer, or a | |
3466 | frame. If WHERE is a buffer or frame, this indicates we | |
1b1acc13 PJ |
3467 | bound a variable that had a buffer-local or frame-local |
3468 | binding. WHERE nil means that the variable had the default | |
0967b4b0 GM |
3469 | value when it was bound. CURRENT-BUFFER is the buffer that |
3470 | was current when the variable was bound. */ | |
611a8f8c | 3471 | else if (CONSP (this_binding.symbol)) |
719177b3 | 3472 | { |
eb700b82 | 3473 | Lisp_Object symbol, where; |
719177b3 | 3474 | |
611a8f8c RS |
3475 | symbol = XCAR (this_binding.symbol); |
3476 | where = XCAR (XCDR (this_binding.symbol)); | |
719177b3 | 3477 | |
eb700b82 | 3478 | if (NILP (where)) |
611a8f8c | 3479 | Fset_default (symbol, this_binding.old_value); |
94b612ad SM |
3480 | /* If `where' is non-nil, reset the value in the appropriate |
3481 | local binding, but only if that binding still exists. */ | |
4e2db1fe SM |
3482 | else if (BUFFERP (where) |
3483 | ? !NILP (Flocal_variable_p (symbol, where)) | |
3484 | : !NILP (Fassq (symbol, XFRAME (where)->param_alist))) | |
3485 | set_internal (symbol, this_binding.old_value, where, 1); | |
719177b3 | 3486 | } |
94b612ad SM |
3487 | /* If variable has a trivial value (no forwarding), we can |
3488 | just set it. No need to check for constant symbols here, | |
3489 | since that was already done by specbind. */ | |
3490 | else if (XSYMBOL (this_binding.symbol)->redirect == SYMBOL_PLAINVAL) | |
3491 | SET_SYMBOL_VAL (XSYMBOL (this_binding.symbol), | |
3492 | this_binding.old_value); | |
db9f0278 | 3493 | else |
94b612ad SM |
3494 | /* NOTE: we only ever come here if make_local_foo was used for |
3495 | the first time on this var within this let. */ | |
3496 | Fset_default (this_binding.symbol, this_binding.old_value); | |
db9f0278 | 3497 | } |
177c0ea7 | 3498 | |
5a073f50 KS |
3499 | if (NILP (Vquit_flag) && !NILP (quitf)) |
3500 | Vquit_flag = quitf; | |
db9f0278 JB |
3501 | |
3502 | UNGCPRO; | |
db9f0278 JB |
3503 | return value; |
3504 | } | |
3505 | \f | |
db9f0278 | 3506 | DEFUN ("backtrace-debug", Fbacktrace_debug, Sbacktrace_debug, 2, 2, 0, |
9dbc9081 PJ |
3507 | doc: /* Set the debug-on-exit flag of eval frame LEVEL levels down to FLAG. |
3508 | The debugger is entered when that frame exits, if the flag is non-nil. */) | |
3509 | (level, flag) | |
db9f0278 JB |
3510 | Lisp_Object level, flag; |
3511 | { | |
3512 | register struct backtrace *backlist = backtrace_list; | |
3513 | register int i; | |
3514 | ||
b7826503 | 3515 | CHECK_NUMBER (level); |
db9f0278 JB |
3516 | |
3517 | for (i = 0; backlist && i < XINT (level); i++) | |
3518 | { | |
3519 | backlist = backlist->next; | |
3520 | } | |
3521 | ||
3522 | if (backlist) | |
265a9e55 | 3523 | backlist->debug_on_exit = !NILP (flag); |
db9f0278 JB |
3524 | |
3525 | return flag; | |
3526 | } | |
3527 | ||
3528 | DEFUN ("backtrace", Fbacktrace, Sbacktrace, 0, 0, "", | |
9dbc9081 PJ |
3529 | doc: /* Print a trace of Lisp function calls currently active. |
3530 | Output stream used is value of `standard-output'. */) | |
3531 | () | |
db9f0278 JB |
3532 | { |
3533 | register struct backtrace *backlist = backtrace_list; | |
3534 | register int i; | |
3535 | Lisp_Object tail; | |
3536 | Lisp_Object tem; | |
3537 | extern Lisp_Object Vprint_level; | |
3538 | struct gcpro gcpro1; | |
3539 | ||
a631e24c | 3540 | XSETFASTINT (Vprint_level, 3); |
db9f0278 JB |
3541 | |
3542 | tail = Qnil; | |
3543 | GCPRO1 (tail); | |
3544 | ||
3545 | while (backlist) | |
3546 | { | |
3547 | write_string (backlist->debug_on_exit ? "* " : " ", 2); | |
3548 | if (backlist->nargs == UNEVALLED) | |
3549 | { | |
3550 | Fprin1 (Fcons (*backlist->function, *backlist->args), Qnil); | |
b6703b02 | 3551 | write_string ("\n", -1); |
db9f0278 JB |
3552 | } |
3553 | else | |
3554 | { | |
3555 | tem = *backlist->function; | |
3556 | Fprin1 (tem, Qnil); /* This can QUIT */ | |
3557 | write_string ("(", -1); | |
3558 | if (backlist->nargs == MANY) | |
3559 | { | |
3560 | for (tail = *backlist->args, i = 0; | |
265a9e55 | 3561 | !NILP (tail); |
db9f0278 JB |
3562 | tail = Fcdr (tail), i++) |
3563 | { | |
3564 | if (i) write_string (" ", -1); | |
3565 | Fprin1 (Fcar (tail), Qnil); | |
3566 | } | |
3567 | } | |
3568 | else | |
3569 | { | |
3570 | for (i = 0; i < backlist->nargs; i++) | |
3571 | { | |
3572 | if (i) write_string (" ", -1); | |
3573 | Fprin1 (backlist->args[i], Qnil); | |
3574 | } | |
3575 | } | |
b6703b02 | 3576 | write_string (")\n", -1); |
db9f0278 | 3577 | } |
db9f0278 JB |
3578 | backlist = backlist->next; |
3579 | } | |
3580 | ||
3581 | Vprint_level = Qnil; | |
3582 | UNGCPRO; | |
3583 | return Qnil; | |
3584 | } | |
3585 | ||
17401c97 | 3586 | DEFUN ("backtrace-frame", Fbacktrace_frame, Sbacktrace_frame, 1, 1, NULL, |
9dbc9081 PJ |
3587 | doc: /* Return the function and arguments NFRAMES up from current execution point. |
3588 | If that frame has not evaluated the arguments yet (or is a special form), | |
3589 | the value is (nil FUNCTION ARG-FORMS...). | |
3590 | If that frame has evaluated its arguments and called its function already, | |
3591 | the value is (t FUNCTION ARG-VALUES...). | |
3592 | A &rest arg is represented as the tail of the list ARG-VALUES. | |
3593 | FUNCTION is whatever was supplied as car of evaluated list, | |
3594 | or a lambda expression for macro calls. | |
3595 | If NFRAMES is more than the number of frames, the value is nil. */) | |
3596 | (nframes) | |
db9f0278 JB |
3597 | Lisp_Object nframes; |
3598 | { | |
3599 | register struct backtrace *backlist = backtrace_list; | |
3600 | register int i; | |
3601 | Lisp_Object tem; | |
3602 | ||
b7826503 | 3603 | CHECK_NATNUM (nframes); |
db9f0278 JB |
3604 | |
3605 | /* Find the frame requested. */ | |
b6703b02 | 3606 | for (i = 0; backlist && i < XFASTINT (nframes); i++) |
db9f0278 JB |
3607 | backlist = backlist->next; |
3608 | ||
3609 | if (!backlist) | |
3610 | return Qnil; | |
3611 | if (backlist->nargs == UNEVALLED) | |
3612 | return Fcons (Qnil, Fcons (*backlist->function, *backlist->args)); | |
3613 | else | |
3614 | { | |
3615 | if (backlist->nargs == MANY) | |
3616 | tem = *backlist->args; | |
3617 | else | |
3618 | tem = Flist (backlist->nargs, backlist->args); | |
3619 | ||
3620 | return Fcons (Qt, Fcons (*backlist->function, tem)); | |
3621 | } | |
3622 | } | |
a2ff3819 | 3623 | |
db9f0278 | 3624 | \f |
4ce0541e SM |
3625 | void |
3626 | mark_backtrace () | |
3627 | { | |
3628 | register struct backtrace *backlist; | |
3629 | register int i; | |
3630 | ||
3631 | for (backlist = backtrace_list; backlist; backlist = backlist->next) | |
3632 | { | |
3633 | mark_object (*backlist->function); | |
3634 | ||
3635 | if (backlist->nargs == UNEVALLED || backlist->nargs == MANY) | |
3636 | i = 0; | |
3637 | else | |
3638 | i = backlist->nargs - 1; | |
3639 | for (; i >= 0; i--) | |
3640 | mark_object (backlist->args[i]); | |
3641 | } | |
3642 | } | |
3643 | ||
dfcf069d | 3644 | void |
db9f0278 JB |
3645 | syms_of_eval () |
3646 | { | |
3647 | DEFVAR_INT ("max-specpdl-size", &max_specpdl_size, | |
82fc29a1 | 3648 | doc: /* *Limit on number of Lisp variable bindings and `unwind-protect's. |
9f5903bb | 3649 | If Lisp code tries to increase the total number past this amount, |
2520dc0c RS |
3650 | an error is signaled. |
3651 | You can safely use a value considerably larger than the default value, | |
3652 | if that proves inconveniently small. However, if you increase it too far, | |
3653 | Emacs could run out of memory trying to make the stack bigger. */); | |
db9f0278 JB |
3654 | |
3655 | DEFVAR_INT ("max-lisp-eval-depth", &max_lisp_eval_depth, | |
9dbc9081 | 3656 | doc: /* *Limit on depth in `eval', `apply' and `funcall' before error. |
2520dc0c RS |
3657 | |
3658 | This limit serves to catch infinite recursions for you before they cause | |
9dbc9081 PJ |
3659 | actual stack overflow in C, which would be fatal for Emacs. |
3660 | You can safely make it considerably larger than its default value, | |
2520dc0c RS |
3661 | if that proves inconveniently small. However, if you increase it too far, |
3662 | Emacs could overflow the real C stack, and crash. */); | |
db9f0278 JB |
3663 | |
3664 | DEFVAR_LISP ("quit-flag", &Vquit_flag, | |
9dbc9081 | 3665 | doc: /* Non-nil causes `eval' to abort, unless `inhibit-quit' is non-nil. |
42ed718e RS |
3666 | If the value is t, that means do an ordinary quit. |
3667 | If the value equals `throw-on-input', that means quit by throwing | |
3668 | to the tag specified in `throw-on-input'; it's for handling `while-no-input'. | |
3669 | Typing C-g sets `quit-flag' to t, regardless of `inhibit-quit', | |
3670 | but `inhibit-quit' non-nil prevents anything from taking notice of that. */); | |
db9f0278 JB |
3671 | Vquit_flag = Qnil; |
3672 | ||
3673 | DEFVAR_LISP ("inhibit-quit", &Vinhibit_quit, | |
9dbc9081 PJ |
3674 | doc: /* Non-nil inhibits C-g quitting from happening immediately. |
3675 | Note that `quit-flag' will still be set by typing C-g, | |
3676 | so a quit will be signaled as soon as `inhibit-quit' is nil. | |
3677 | To prevent this happening, set `quit-flag' to nil | |
3678 | before making `inhibit-quit' nil. */); | |
db9f0278 JB |
3679 | Vinhibit_quit = Qnil; |
3680 | ||
d67b4f80 | 3681 | Qinhibit_quit = intern_c_string ("inhibit-quit"); |
ad236261 JB |
3682 | staticpro (&Qinhibit_quit); |
3683 | ||
d67b4f80 | 3684 | Qautoload = intern_c_string ("autoload"); |
db9f0278 JB |
3685 | staticpro (&Qautoload); |
3686 | ||
d67b4f80 | 3687 | Qdebug_on_error = intern_c_string ("debug-on-error"); |
db9f0278 JB |
3688 | staticpro (&Qdebug_on_error); |
3689 | ||
d67b4f80 | 3690 | Qmacro = intern_c_string ("macro"); |
db9f0278 JB |
3691 | staticpro (&Qmacro); |
3692 | ||
d67b4f80 | 3693 | Qdeclare = intern_c_string ("declare"); |
d6edd563 | 3694 | staticpro (&Qdeclare); |
177c0ea7 | 3695 | |
db9f0278 JB |
3696 | /* Note that the process handling also uses Qexit, but we don't want |
3697 | to staticpro it twice, so we just do it here. */ | |
d67b4f80 | 3698 | Qexit = intern_c_string ("exit"); |
db9f0278 JB |
3699 | staticpro (&Qexit); |
3700 | ||
d67b4f80 | 3701 | Qinteractive = intern_c_string ("interactive"); |
db9f0278 JB |
3702 | staticpro (&Qinteractive); |
3703 | ||
d67b4f80 | 3704 | Qcommandp = intern_c_string ("commandp"); |
db9f0278 JB |
3705 | staticpro (&Qcommandp); |
3706 | ||
d67b4f80 | 3707 | Qdefun = intern_c_string ("defun"); |
db9f0278 JB |
3708 | staticpro (&Qdefun); |
3709 | ||
d67b4f80 | 3710 | Qand_rest = intern_c_string ("&rest"); |
db9f0278 JB |
3711 | staticpro (&Qand_rest); |
3712 | ||
d67b4f80 | 3713 | Qand_optional = intern_c_string ("&optional"); |
db9f0278 JB |
3714 | staticpro (&Qand_optional); |
3715 | ||
d67b4f80 | 3716 | Qdebug = intern_c_string ("debug"); |
f01cbfdd RS |
3717 | staticpro (&Qdebug); |
3718 | ||
128c0f66 | 3719 | DEFVAR_LISP ("stack-trace-on-error", &Vstack_trace_on_error, |
704788b3 RS |
3720 | doc: /* *Non-nil means errors display a backtrace buffer. |
3721 | More precisely, this happens for any error that is handled | |
3722 | by the editor command loop. | |
9dbc9081 PJ |
3723 | If the value is a list, an error only means to display a backtrace |
3724 | if one of its condition symbols appears in the list. */); | |
128c0f66 | 3725 | Vstack_trace_on_error = Qnil; |
db9f0278 | 3726 | |
128c0f66 | 3727 | DEFVAR_LISP ("debug-on-error", &Vdebug_on_error, |
9dbc9081 PJ |
3728 | doc: /* *Non-nil means enter debugger if an error is signaled. |
3729 | Does not apply to errors handled by `condition-case' or those | |
3730 | matched by `debug-ignored-errors'. | |
3731 | If the value is a list, an error only means to enter the debugger | |
3732 | if one of its condition symbols appears in the list. | |
3733 | When you evaluate an expression interactively, this variable | |
3734 | is temporarily non-nil if `eval-expression-debug-on-error' is non-nil. | |
fbbdcf2f CY |
3735 | The command `toggle-debug-on-error' toggles this. |
3736 | See also the variable `debug-on-quit'. */); | |
128c0f66 | 3737 | Vdebug_on_error = Qnil; |
db9f0278 | 3738 | |
fc950e09 | 3739 | DEFVAR_LISP ("debug-ignored-errors", &Vdebug_ignored_errors, |
9dbc9081 PJ |
3740 | doc: /* *List of errors for which the debugger should not be called. |
3741 | Each element may be a condition-name or a regexp that matches error messages. | |
3742 | If any element applies to a given error, that error skips the debugger | |
3743 | and just returns to top level. | |
3744 | This overrides the variable `debug-on-error'. | |
3745 | It does not apply to errors handled by `condition-case'. */); | |
fc950e09 KH |
3746 | Vdebug_ignored_errors = Qnil; |
3747 | ||
db9f0278 | 3748 | DEFVAR_BOOL ("debug-on-quit", &debug_on_quit, |
82fc29a1 JB |
3749 | doc: /* *Non-nil means enter debugger if quit is signaled (C-g, for example). |
3750 | Does not apply if quit is handled by a `condition-case'. */); | |
db9f0278 JB |
3751 | debug_on_quit = 0; |
3752 | ||
3753 | DEFVAR_BOOL ("debug-on-next-call", &debug_on_next_call, | |
9dbc9081 | 3754 | doc: /* Non-nil means enter debugger before next `eval', `apply' or `funcall'. */); |
db9f0278 | 3755 | |
556d7314 | 3756 | DEFVAR_BOOL ("debugger-may-continue", &debugger_may_continue, |
9dbc9081 PJ |
3757 | doc: /* Non-nil means debugger may continue execution. |
3758 | This is nil when the debugger is called under circumstances where it | |
3759 | might not be safe to continue. */); | |
dac204bc | 3760 | debugger_may_continue = 1; |
556d7314 | 3761 | |
db9f0278 | 3762 | DEFVAR_LISP ("debugger", &Vdebugger, |
9dbc9081 PJ |
3763 | doc: /* Function to call to invoke debugger. |
3764 | If due to frame exit, args are `exit' and the value being returned; | |
3765 | this function's value will be returned instead of that. | |
3766 | If due to error, args are `error' and a list of the args to `signal'. | |
3767 | If due to `apply' or `funcall' entry, one arg, `lambda'. | |
3768 | If due to `eval' entry, one arg, t. */); | |
db9f0278 JB |
3769 | Vdebugger = Qnil; |
3770 | ||
61ede770 | 3771 | DEFVAR_LISP ("signal-hook-function", &Vsignal_hook_function, |
9dbc9081 PJ |
3772 | doc: /* If non-nil, this is a function for `signal' to call. |
3773 | It receives the same arguments that `signal' was given. | |
3774 | The Edebug package uses this to regain control. */); | |
61ede770 RS |
3775 | Vsignal_hook_function = Qnil; |
3776 | ||
57a6e758 | 3777 | DEFVAR_LISP ("debug-on-signal", &Vdebug_on_signal, |
9dbc9081 PJ |
3778 | doc: /* *Non-nil means call the debugger regardless of condition handlers. |
3779 | Note that `debug-on-error', `debug-on-quit' and friends | |
3780 | still determine whether to handle the particular condition. */); | |
57a6e758 | 3781 | Vdebug_on_signal = Qnil; |
61ede770 | 3782 | |
d6edd563 GM |
3783 | DEFVAR_LISP ("macro-declaration-function", &Vmacro_declaration_function, |
3784 | doc: /* Function to process declarations in a macro definition. | |
3785 | The function will be called with two args MACRO and DECL. | |
3786 | MACRO is the name of the macro being defined. | |
3787 | DECL is a list `(declare ...)' containing the declarations. | |
3788 | The value the function returns is not used. */); | |
3789 | Vmacro_declaration_function = Qnil; | |
3790 | ||
d67b4f80 | 3791 | Vrun_hooks = intern_c_string ("run-hooks"); |
6e6e9f08 | 3792 | staticpro (&Vrun_hooks); |
db9f0278 JB |
3793 | |
3794 | staticpro (&Vautoload_queue); | |
3795 | Vautoload_queue = Qnil; | |
a2ff3819 GM |
3796 | staticpro (&Vsignaling_function); |
3797 | Vsignaling_function = Qnil; | |
db9f0278 JB |
3798 | |
3799 | defsubr (&Sor); | |
3800 | defsubr (&Sand); | |
3801 | defsubr (&Sif); | |
3802 | defsubr (&Scond); | |
3803 | defsubr (&Sprogn); | |
3804 | defsubr (&Sprog1); | |
3805 | defsubr (&Sprog2); | |
3806 | defsubr (&Ssetq); | |
3807 | defsubr (&Squote); | |
3808 | defsubr (&Sfunction); | |
3809 | defsubr (&Sdefun); | |
3810 | defsubr (&Sdefmacro); | |
3811 | defsubr (&Sdefvar); | |
19cebf5a | 3812 | defsubr (&Sdefvaralias); |
db9f0278 JB |
3813 | defsubr (&Sdefconst); |
3814 | defsubr (&Suser_variable_p); | |
3815 | defsubr (&Slet); | |
3816 | defsubr (&SletX); | |
3817 | defsubr (&Swhile); | |
3818 | defsubr (&Smacroexpand); | |
3819 | defsubr (&Scatch); | |
3820 | defsubr (&Sthrow); | |
3821 | defsubr (&Sunwind_protect); | |
3822 | defsubr (&Scondition_case); | |
3823 | defsubr (&Ssignal); | |
3824 | defsubr (&Sinteractive_p); | |
4b664e76 | 3825 | defsubr (&Scalled_interactively_p); |
db9f0278 JB |
3826 | defsubr (&Scommandp); |
3827 | defsubr (&Sautoload); | |
3828 | defsubr (&Seval); | |
3829 | defsubr (&Sapply); | |
3830 | defsubr (&Sfuncall); | |
ff936e53 SM |
3831 | defsubr (&Srun_hooks); |
3832 | defsubr (&Srun_hook_with_args); | |
3833 | defsubr (&Srun_hook_with_args_until_success); | |
3834 | defsubr (&Srun_hook_with_args_until_failure); | |
661c7d6e | 3835 | defsubr (&Sfetch_bytecode); |
db9f0278 JB |
3836 | defsubr (&Sbacktrace_debug); |
3837 | defsubr (&Sbacktrace); | |
3838 | defsubr (&Sbacktrace_frame); | |
3839 | } | |
ab5796a9 MB |
3840 | |
3841 | /* arch-tag: 014a07aa-33ab-4a8f-a3d2-ee8a4a9ff7fb | |
3842 | (do not change this comment) */ |