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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, |
bb8e180f AS |
3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
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; |
db9f0278 | 66 | |
6e6e9f08 RS |
67 | /* This holds either the symbol `run-hooks' or nil. |
68 | It is nil at an early stage of startup, and when Emacs | |
69 | is shutting down. */ | |
4c576a83 | 70 | |
db9f0278 JB |
71 | Lisp_Object Vrun_hooks; |
72 | ||
73 | /* Non-nil means record all fset's and provide's, to be undone | |
74 | if the file being autoloaded is not fully loaded. | |
75 | They are recorded by being consed onto the front of Vautoload_queue: | |
47b82df9 | 76 | (FUN . ODEF) for a defun, (0 . OFEATURES) for a provide. */ |
db9f0278 JB |
77 | |
78 | Lisp_Object Vautoload_queue; | |
79 | ||
80 | /* Current number of specbindings allocated in specpdl. */ | |
4c576a83 | 81 | |
5816888b | 82 | EMACS_INT specpdl_size; |
db9f0278 JB |
83 | |
84 | /* Pointer to beginning of specpdl. */ | |
4c576a83 | 85 | |
db9f0278 JB |
86 | struct specbinding *specpdl; |
87 | ||
88 | /* Pointer to first unused element in specpdl. */ | |
4c576a83 | 89 | |
ab837828 | 90 | struct specbinding *specpdl_ptr; |
db9f0278 JB |
91 | |
92 | /* Maximum size allowed for specpdl allocation */ | |
4c576a83 | 93 | |
31ade731 | 94 | EMACS_INT max_specpdl_size; |
db9f0278 JB |
95 | |
96 | /* Depth in Lisp evaluations and function calls. */ | |
4c576a83 | 97 | |
5816888b | 98 | EMACS_INT lisp_eval_depth; |
db9f0278 JB |
99 | |
100 | /* Maximum allowed depth in Lisp evaluations and function calls. */ | |
4c576a83 | 101 | |
31ade731 | 102 | EMACS_INT max_lisp_eval_depth; |
db9f0278 JB |
103 | |
104 | /* Nonzero means enter debugger before next function call */ | |
4c576a83 | 105 | |
db9f0278 JB |
106 | int debug_on_next_call; |
107 | ||
1b1acc13 | 108 | /* Non-zero means debugger may continue. This is zero when the |
556d7314 GM |
109 | debugger is called during redisplay, where it might not be safe to |
110 | continue the interrupted redisplay. */ | |
111 | ||
112 | int debugger_may_continue; | |
113 | ||
128c0f66 | 114 | /* List of conditions (non-nil atom means all) which cause a backtrace |
4de86b16 | 115 | if an error is handled by the command loop's error handler. */ |
4c576a83 | 116 | |
128c0f66 | 117 | Lisp_Object Vstack_trace_on_error; |
db9f0278 | 118 | |
128c0f66 | 119 | /* List of conditions (non-nil atom means all) which enter the debugger |
4de86b16 | 120 | if an error is handled by the command loop's error handler. */ |
4c576a83 | 121 | |
128c0f66 | 122 | Lisp_Object Vdebug_on_error; |
db9f0278 | 123 | |
fc950e09 | 124 | /* List of conditions and regexps specifying error messages which |
1b1acc13 | 125 | do not enter the debugger even if Vdebug_on_error says they should. */ |
4c576a83 | 126 | |
fc950e09 KH |
127 | Lisp_Object Vdebug_ignored_errors; |
128 | ||
61ede770 | 129 | /* Non-nil means call the debugger even if the error will be handled. */ |
4c576a83 | 130 | |
57a6e758 | 131 | Lisp_Object Vdebug_on_signal; |
61ede770 RS |
132 | |
133 | /* Hook for edebug to use. */ | |
4c576a83 | 134 | |
61ede770 RS |
135 | Lisp_Object Vsignal_hook_function; |
136 | ||
db9f0278 | 137 | /* Nonzero means enter debugger if a quit signal |
128c0f66 | 138 | is handled by the command loop's error handler. */ |
4c576a83 | 139 | |
db9f0278 JB |
140 | int debug_on_quit; |
141 | ||
be857679 | 142 | /* The value of num_nonmacro_input_events as of the last time we |
82da7701 | 143 | started to enter the debugger. If we decide to enter the debugger |
be857679 | 144 | again when this is still equal to num_nonmacro_input_events, then we |
82da7701 JB |
145 | know that the debugger itself has an error, and we should just |
146 | signal the error instead of entering an infinite loop of debugger | |
147 | invocations. */ | |
4c576a83 | 148 | |
82da7701 | 149 | int when_entered_debugger; |
db9f0278 JB |
150 | |
151 | Lisp_Object Vdebugger; | |
152 | ||
a2ff3819 GM |
153 | /* The function from which the last `signal' was called. Set in |
154 | Fsignal. */ | |
155 | ||
156 | Lisp_Object Vsignaling_function; | |
157 | ||
4c576a83 GM |
158 | /* Set to non-zero while processing X events. Checked in Feval to |
159 | make sure the Lisp interpreter isn't called from a signal handler, | |
160 | which is unsafe because the interpreter isn't reentrant. */ | |
161 | ||
162 | int handling_signal; | |
163 | ||
d6edd563 GM |
164 | /* Function to process declarations in defmacro forms. */ |
165 | ||
166 | Lisp_Object Vmacro_declaration_function; | |
167 | ||
f57e2426 J |
168 | static Lisp_Object funcall_lambda (Lisp_Object, int, Lisp_Object*); |
169 | static void unwind_to_catch (struct catchtag *, Lisp_Object) NO_RETURN; | |
873759d5 | 170 | \f |
dfcf069d | 171 | void |
d3da34e0 | 172 | init_eval_once (void) |
db9f0278 JB |
173 | { |
174 | specpdl_size = 50; | |
716acfce | 175 | specpdl = (struct specbinding *) xmalloc (specpdl_size * sizeof (struct specbinding)); |
270e8074 | 176 | specpdl_ptr = specpdl; |
6588243d | 177 | /* Don't forget to update docs (lispref node "Local Variables"). */ |
a4547405 | 178 | max_specpdl_size = 1000; |
d46f6bbb | 179 | max_lisp_eval_depth = 600; |
34d470ba RS |
180 | |
181 | Vrun_hooks = Qnil; | |
db9f0278 JB |
182 | } |
183 | ||
dfcf069d | 184 | void |
d3da34e0 | 185 | init_eval (void) |
db9f0278 JB |
186 | { |
187 | specpdl_ptr = specpdl; | |
188 | catchlist = 0; | |
189 | handlerlist = 0; | |
190 | backtrace_list = 0; | |
191 | Vquit_flag = Qnil; | |
192 | debug_on_next_call = 0; | |
193 | lisp_eval_depth = 0; | |
87e21fbd | 194 | #ifdef DEBUG_GCPRO |
15934ffa | 195 | gcpro_level = 0; |
87e21fbd | 196 | #endif |
be857679 | 197 | /* This is less than the initial value of num_nonmacro_input_events. */ |
b5b911f9 | 198 | when_entered_debugger = -1; |
db9f0278 JB |
199 | } |
200 | ||
9f5903bb RS |
201 | /* unwind-protect function used by call_debugger. */ |
202 | ||
203 | static Lisp_Object | |
d3da34e0 | 204 | restore_stack_limits (Lisp_Object data) |
9f5903bb RS |
205 | { |
206 | max_specpdl_size = XINT (XCAR (data)); | |
207 | max_lisp_eval_depth = XINT (XCDR (data)); | |
538f78c3 | 208 | return Qnil; |
9f5903bb RS |
209 | } |
210 | ||
211 | /* Call the Lisp debugger, giving it argument ARG. */ | |
212 | ||
db9f0278 | 213 | Lisp_Object |
d3da34e0 | 214 | call_debugger (Lisp_Object arg) |
db9f0278 | 215 | { |
3648c842 | 216 | int debug_while_redisplaying; |
aed13378 | 217 | int count = SPECPDL_INDEX (); |
3648c842 | 218 | Lisp_Object val; |
5816888b | 219 | EMACS_INT old_max = max_specpdl_size; |
177c0ea7 | 220 | |
9f5903bb RS |
221 | /* Temporarily bump up the stack limits, |
222 | so the debugger won't run out of stack. */ | |
177c0ea7 | 223 | |
9f5903bb RS |
224 | max_specpdl_size += 1; |
225 | record_unwind_protect (restore_stack_limits, | |
226 | Fcons (make_number (old_max), | |
227 | make_number (max_lisp_eval_depth))); | |
228 | max_specpdl_size = old_max; | |
229 | ||
230 | if (lisp_eval_depth + 40 > max_lisp_eval_depth) | |
231 | max_lisp_eval_depth = lisp_eval_depth + 40; | |
232 | ||
233 | if (SPECPDL_INDEX () + 100 > max_specpdl_size) | |
234 | max_specpdl_size = SPECPDL_INDEX () + 100; | |
177c0ea7 | 235 | |
d148e14d | 236 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
237 | if (display_hourglass_p) |
238 | cancel_hourglass (); | |
237c23b0 GM |
239 | #endif |
240 | ||
db9f0278 | 241 | debug_on_next_call = 0; |
be857679 | 242 | when_entered_debugger = num_nonmacro_input_events; |
3648c842 GM |
243 | |
244 | /* Resetting redisplaying_p to 0 makes sure that debug output is | |
245 | displayed if the debugger is invoked during redisplay. */ | |
246 | debug_while_redisplaying = redisplaying_p; | |
247 | redisplaying_p = 0; | |
556d7314 GM |
248 | specbind (intern ("debugger-may-continue"), |
249 | debug_while_redisplaying ? Qnil : Qt); | |
8efb6cc7 | 250 | specbind (Qinhibit_redisplay, Qnil); |
9f5903bb | 251 | specbind (Qdebug_on_error, Qnil); |
9db6f6b4 GM |
252 | |
253 | #if 0 /* Binding this prevents execution of Lisp code during | |
254 | redisplay, which necessarily leads to display problems. */ | |
8efb6cc7 | 255 | specbind (Qinhibit_eval_during_redisplay, Qt); |
9db6f6b4 | 256 | #endif |
177c0ea7 | 257 | |
3648c842 GM |
258 | val = apply1 (Vdebugger, arg); |
259 | ||
260 | /* Interrupting redisplay and resuming it later is not safe under | |
261 | all circumstances. So, when the debugger returns, abort the | |
1b1acc13 | 262 | interrupted redisplay by going back to the top-level. */ |
3648c842 GM |
263 | if (debug_while_redisplaying) |
264 | Ftop_level (); | |
265 | ||
556d7314 | 266 | return unbind_to (count, val); |
db9f0278 JB |
267 | } |
268 | ||
dfcf069d | 269 | void |
d3da34e0 | 270 | do_debug_on_call (Lisp_Object code) |
db9f0278 JB |
271 | { |
272 | debug_on_next_call = 0; | |
273 | backtrace_list->debug_on_exit = 1; | |
274 | call_debugger (Fcons (code, Qnil)); | |
275 | } | |
276 | \f | |
277 | /* NOTE!!! Every function that can call EVAL must protect its args | |
278 | and temporaries from garbage collection while it needs them. | |
279 | The definition of `For' shows what you have to do. */ | |
280 | ||
281 | DEFUN ("or", For, Sor, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
282 | doc: /* Eval args until one of them yields non-nil, then return that value. |
283 | The remaining args are not evalled at all. | |
284 | If all args return nil, return nil. | |
533eb34b | 285 | usage: (or CONDITIONS...) */) |
5842a27b | 286 | (Lisp_Object args) |
db9f0278 | 287 | { |
e509f168 | 288 | register Lisp_Object val = Qnil; |
db9f0278 JB |
289 | struct gcpro gcpro1; |
290 | ||
e509f168 | 291 | GCPRO1 (args); |
db9f0278 | 292 | |
e509f168 | 293 | while (CONSP (args)) |
db9f0278 | 294 | { |
e509f168 | 295 | val = Feval (XCAR (args)); |
265a9e55 | 296 | if (!NILP (val)) |
db9f0278 | 297 | break; |
e509f168 | 298 | args = XCDR (args); |
db9f0278 | 299 | } |
db9f0278 JB |
300 | |
301 | UNGCPRO; | |
302 | return val; | |
303 | } | |
304 | ||
305 | DEFUN ("and", Fand, Sand, 0, UNEVALLED, 0, | |
b8de5714 | 306 | doc: /* Eval args until one of them yields nil, then return nil. |
9dbc9081 PJ |
307 | The remaining args are not evalled at all. |
308 | If no arg yields nil, return the last arg's value. | |
533eb34b | 309 | usage: (and CONDITIONS...) */) |
5842a27b | 310 | (Lisp_Object args) |
db9f0278 | 311 | { |
e509f168 | 312 | register Lisp_Object val = Qt; |
db9f0278 JB |
313 | struct gcpro gcpro1; |
314 | ||
e509f168 | 315 | GCPRO1 (args); |
db9f0278 | 316 | |
e509f168 | 317 | while (CONSP (args)) |
db9f0278 | 318 | { |
e509f168 | 319 | val = Feval (XCAR (args)); |
265a9e55 | 320 | if (NILP (val)) |
db9f0278 | 321 | break; |
e509f168 | 322 | args = XCDR (args); |
db9f0278 | 323 | } |
db9f0278 JB |
324 | |
325 | UNGCPRO; | |
326 | return val; | |
327 | } | |
328 | ||
329 | DEFUN ("if", Fif, Sif, 2, UNEVALLED, 0, | |
b8de5714 | 330 | doc: /* If COND yields non-nil, do THEN, else do ELSE... |
9dbc9081 PJ |
331 | Returns the value of THEN or the value of the last of the ELSE's. |
332 | THEN must be one expression, but ELSE... can be zero or more expressions. | |
333 | If COND yields nil, and there are no ELSE's, the value is nil. | |
7a25dc6d | 334 | usage: (if COND THEN ELSE...) */) |
5842a27b | 335 | (Lisp_Object args) |
db9f0278 JB |
336 | { |
337 | register Lisp_Object cond; | |
338 | struct gcpro gcpro1; | |
339 | ||
340 | GCPRO1 (args); | |
341 | cond = Feval (Fcar (args)); | |
342 | UNGCPRO; | |
343 | ||
265a9e55 | 344 | if (!NILP (cond)) |
db9f0278 JB |
345 | return Feval (Fcar (Fcdr (args))); |
346 | return Fprogn (Fcdr (Fcdr (args))); | |
347 | } | |
348 | ||
349 | DEFUN ("cond", Fcond, Scond, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
350 | doc: /* Try each clause until one succeeds. |
351 | Each clause looks like (CONDITION BODY...). CONDITION is evaluated | |
352 | and, if the value is non-nil, this clause succeeds: | |
353 | then the expressions in BODY are evaluated and the last one's | |
354 | value is the value of the cond-form. | |
355 | If no clause succeeds, cond returns nil. | |
356 | If a clause has one element, as in (CONDITION), | |
357 | CONDITION's value if non-nil is returned from the cond-form. | |
7a25dc6d | 358 | usage: (cond CLAUSES...) */) |
5842a27b | 359 | (Lisp_Object args) |
db9f0278 JB |
360 | { |
361 | register Lisp_Object clause, val; | |
362 | struct gcpro gcpro1; | |
363 | ||
364 | val = Qnil; | |
365 | GCPRO1 (args); | |
265a9e55 | 366 | while (!NILP (args)) |
db9f0278 JB |
367 | { |
368 | clause = Fcar (args); | |
369 | val = Feval (Fcar (clause)); | |
265a9e55 | 370 | if (!NILP (val)) |
db9f0278 | 371 | { |
03699b14 KR |
372 | if (!EQ (XCDR (clause), Qnil)) |
373 | val = Fprogn (XCDR (clause)); | |
db9f0278 JB |
374 | break; |
375 | } | |
03699b14 | 376 | args = XCDR (args); |
db9f0278 JB |
377 | } |
378 | UNGCPRO; | |
379 | ||
380 | return val; | |
381 | } | |
382 | ||
383 | DEFUN ("progn", Fprogn, Sprogn, 0, UNEVALLED, 0, | |
9dbc9081 | 384 | doc: /* Eval BODY forms sequentially and return value of last one. |
5b4a1f50 | 385 | usage: (progn BODY...) */) |
5842a27b | 386 | (Lisp_Object args) |
db9f0278 | 387 | { |
e509f168 | 388 | register Lisp_Object val = Qnil; |
db9f0278 JB |
389 | struct gcpro gcpro1; |
390 | ||
e509f168 | 391 | GCPRO1 (args); |
db9f0278 | 392 | |
e509f168 | 393 | while (CONSP (args)) |
db9f0278 | 394 | { |
e509f168 SM |
395 | val = Feval (XCAR (args)); |
396 | args = XCDR (args); | |
db9f0278 | 397 | } |
db9f0278 JB |
398 | |
399 | UNGCPRO; | |
400 | return val; | |
401 | } | |
402 | ||
403 | DEFUN ("prog1", Fprog1, Sprog1, 1, UNEVALLED, 0, | |
bdee2ef3 | 404 | doc: /* Eval FIRST and BODY sequentially; return value from FIRST. |
9dbc9081 PJ |
405 | The value of FIRST is saved during the evaluation of the remaining args, |
406 | whose values are discarded. | |
7a25dc6d | 407 | usage: (prog1 FIRST BODY...) */) |
5842a27b | 408 | (Lisp_Object args) |
db9f0278 JB |
409 | { |
410 | Lisp_Object val; | |
411 | register Lisp_Object args_left; | |
412 | struct gcpro gcpro1, gcpro2; | |
413 | register int argnum = 0; | |
414 | ||
9ac66b45 | 415 | if (NILP (args)) |
db9f0278 JB |
416 | return Qnil; |
417 | ||
418 | args_left = args; | |
419 | val = Qnil; | |
420 | GCPRO2 (args, val); | |
421 | ||
422 | do | |
423 | { | |
424 | if (!(argnum++)) | |
bb8e180f | 425 | val = Feval (Fcar (args_left)); |
db9f0278 JB |
426 | else |
427 | Feval (Fcar (args_left)); | |
428 | args_left = Fcdr (args_left); | |
429 | } | |
265a9e55 | 430 | while (!NILP(args_left)); |
db9f0278 JB |
431 | |
432 | UNGCPRO; | |
433 | return val; | |
434 | } | |
435 | ||
436 | DEFUN ("prog2", Fprog2, Sprog2, 2, UNEVALLED, 0, | |
bdee2ef3 | 437 | doc: /* Eval FORM1, FORM2 and BODY sequentially; return value from FORM2. |
82fc29a1 JB |
438 | The value of FORM2 is saved during the evaluation of the |
439 | remaining args, whose values are discarded. | |
440 | usage: (prog2 FORM1 FORM2 BODY...) */) | |
5842a27b | 441 | (Lisp_Object args) |
db9f0278 JB |
442 | { |
443 | Lisp_Object val; | |
444 | register Lisp_Object args_left; | |
445 | struct gcpro gcpro1, gcpro2; | |
446 | register int argnum = -1; | |
447 | ||
448 | val = Qnil; | |
449 | ||
87d238ba | 450 | if (NILP (args)) |
db9f0278 JB |
451 | return Qnil; |
452 | ||
453 | args_left = args; | |
454 | val = Qnil; | |
455 | GCPRO2 (args, val); | |
456 | ||
457 | do | |
458 | { | |
459 | if (!(argnum++)) | |
bb8e180f | 460 | val = Feval (Fcar (args_left)); |
db9f0278 JB |
461 | else |
462 | Feval (Fcar (args_left)); | |
463 | args_left = Fcdr (args_left); | |
464 | } | |
87d238ba | 465 | while (!NILP (args_left)); |
db9f0278 JB |
466 | |
467 | UNGCPRO; | |
468 | return val; | |
469 | } | |
470 | ||
471 | DEFUN ("setq", Fsetq, Ssetq, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
472 | doc: /* Set each SYM to the value of its VAL. |
473 | The symbols SYM are variables; they are literal (not evaluated). | |
474 | The values VAL are expressions; they are evaluated. | |
475 | Thus, (setq x (1+ y)) sets `x' to the value of `(1+ y)'. | |
476 | The second VAL is not computed until after the first SYM is set, and so on; | |
477 | each VAL can use the new value of variables set earlier in the `setq'. | |
478 | The return value of the `setq' form is the value of the last VAL. | |
819586b2 | 479 | usage: (setq [SYM VAL]...) */) |
5842a27b | 480 | (Lisp_Object args) |
db9f0278 JB |
481 | { |
482 | register Lisp_Object args_left; | |
483 | register Lisp_Object val, sym; | |
484 | struct gcpro gcpro1; | |
485 | ||
1283140e | 486 | if (NILP (args)) |
db9f0278 JB |
487 | return Qnil; |
488 | ||
489 | args_left = args; | |
490 | GCPRO1 (args); | |
491 | ||
492 | do | |
493 | { | |
494 | val = Feval (Fcar (Fcdr (args_left))); | |
495 | sym = Fcar (args_left); | |
496 | Fset (sym, val); | |
497 | args_left = Fcdr (Fcdr (args_left)); | |
498 | } | |
265a9e55 | 499 | while (!NILP(args_left)); |
db9f0278 JB |
500 | |
501 | UNGCPRO; | |
502 | return val; | |
503 | } | |
177c0ea7 | 504 | |
db9f0278 | 505 | DEFUN ("quote", Fquote, Squote, 1, UNEVALLED, 0, |
9dbc9081 PJ |
506 | doc: /* Return the argument, without evaluating it. `(quote x)' yields `x'. |
507 | usage: (quote ARG) */) | |
5842a27b | 508 | (Lisp_Object args) |
db9f0278 | 509 | { |
1283140e RS |
510 | if (!NILP (Fcdr (args))) |
511 | xsignal2 (Qwrong_number_of_arguments, Qquote, Flength (args)); | |
db9f0278 JB |
512 | return Fcar (args); |
513 | } | |
177c0ea7 | 514 | |
db9f0278 | 515 | DEFUN ("function", Ffunction, Sfunction, 1, UNEVALLED, 0, |
9dbc9081 PJ |
516 | doc: /* Like `quote', but preferred for objects which are functions. |
517 | In byte compilation, `function' causes its argument to be compiled. | |
518 | `quote' cannot do that. | |
519 | usage: (function ARG) */) | |
5842a27b | 520 | (Lisp_Object args) |
db9f0278 | 521 | { |
1283140e RS |
522 | if (!NILP (Fcdr (args))) |
523 | xsignal2 (Qwrong_number_of_arguments, Qfunction, Flength (args)); | |
db9f0278 JB |
524 | return Fcar (args); |
525 | } | |
526 | ||
e0f331ab | 527 | |
db9f0278 | 528 | DEFUN ("interactive-p", Finteractive_p, Sinteractive_p, 0, 0, 0, |
84b17ab0 | 529 | doc: /* Return t if the containing function was run directly by user input. |
82fc29a1 JB |
530 | This means that the function was called with `call-interactively' |
531 | \(which includes being called as the binding of a key) | |
84b17ab0 | 532 | and input is currently coming from the keyboard (not a keyboard macro), |
c63df42b RS |
533 | and Emacs is not running in batch mode (`noninteractive' is nil). |
534 | ||
535 | The only known proper use of `interactive-p' is in deciding whether to | |
536 | display a helpful message, or how to display it. If you're thinking | |
537 | of using it for any other purpose, it is quite likely that you're | |
538 | making a mistake. Think: what do you want to do when the command is | |
539 | called from a keyboard macro? | |
540 | ||
84b17ab0 CY |
541 | To test whether your function was called with `call-interactively', |
542 | either (i) add an extra optional argument and give it an `interactive' | |
543 | spec that specifies non-nil unconditionally (such as \"p\"); or (ii) | |
544 | use `called-interactively-p'. */) | |
5842a27b | 545 | (void) |
db9f0278 | 546 | { |
c63df42b | 547 | return (INTERACTIVE && interactive_p (1)) ? Qt : Qnil; |
e0f331ab GM |
548 | } |
549 | ||
550 | ||
9d28c33e | 551 | DEFUN ("called-interactively-p", Fcalled_interactively_p, Scalled_interactively_p, 0, 1, 0, |
84b17ab0 | 552 | doc: /* Return t if the containing function was called by `call-interactively'. |
9d28c33e SM |
553 | If KIND is `interactive', then only return t if the call was made |
554 | interactively by the user, i.e. not in `noninteractive' mode nor | |
555 | when `executing-kbd-macro'. | |
556 | If KIND is `any', on the other hand, it will return t for any kind of | |
557 | interactive call, including being called as the binding of a key, or | |
558 | from a keyboard macro, or in `noninteractive' mode. | |
559 | ||
560 | The only known proper use of `interactive' for KIND is in deciding | |
561 | whether to display a helpful message, or how to display it. If you're | |
562 | thinking of using it for any other purpose, it is quite likely that | |
563 | you're making a mistake. Think: what do you want to do when the | |
564 | command is called from a keyboard macro? | |
84b17ab0 CY |
565 | |
566 | This function is meant for implementing advice and other | |
567 | function-modifying features. Instead of using this, it is sometimes | |
568 | cleaner to give your function an extra optional argument whose | |
569 | `interactive' spec specifies non-nil unconditionally (\"p\" is a good | |
9d28c33e | 570 | way to do this), or via (not (or executing-kbd-macro noninteractive)). */) |
5842a27b | 571 | (Lisp_Object kind) |
c63df42b | 572 | { |
9d28c33e SM |
573 | return ((INTERACTIVE || !EQ (kind, intern ("interactive"))) |
574 | && interactive_p (1)) ? Qt : Qnil; | |
c63df42b RS |
575 | } |
576 | ||
577 | ||
578 | /* Return 1 if function in which this appears was called using | |
579 | call-interactively. | |
e0f331ab GM |
580 | |
581 | EXCLUDE_SUBRS_P non-zero means always return 0 if the function | |
582 | called is a built-in. */ | |
583 | ||
584 | int | |
d3da34e0 | 585 | interactive_p (int exclude_subrs_p) |
e0f331ab GM |
586 | { |
587 | struct backtrace *btp; | |
588 | Lisp_Object fun; | |
db9f0278 | 589 | |
db9f0278 | 590 | btp = backtrace_list; |
daa37602 JB |
591 | |
592 | /* If this isn't a byte-compiled function, there may be a frame at | |
e0f331ab | 593 | the top for Finteractive_p. If so, skip it. */ |
a7f96a35 | 594 | fun = Findirect_function (*btp->function, Qnil); |
0b31741c RS |
595 | if (SUBRP (fun) && (XSUBR (fun) == &Sinteractive_p |
596 | || XSUBR (fun) == &Scalled_interactively_p)) | |
db9f0278 | 597 | btp = btp->next; |
daa37602 JB |
598 | |
599 | /* If we're running an Emacs 18-style byte-compiled function, there | |
4402a9ed RS |
600 | may be a frame for Fbytecode at the top level. In any version of |
601 | Emacs there can be Fbytecode frames for subexpressions evaluated | |
602 | inside catch and condition-case. Skip past them. | |
daa37602 | 603 | |
4402a9ed | 604 | If this isn't a byte-compiled function, then we may now be |
daa37602 | 605 | looking at several frames for special forms. Skip past them. */ |
4402a9ed RS |
606 | while (btp |
607 | && (EQ (*btp->function, Qbytecode) | |
608 | || btp->nargs == UNEVALLED)) | |
a6e3fa71 JB |
609 | btp = btp->next; |
610 | ||
daa37602 JB |
611 | /* btp now points at the frame of the innermost function that isn't |
612 | a special form, ignoring frames for Finteractive_p and/or | |
613 | Fbytecode at the top. If this frame is for a built-in function | |
614 | (such as load or eval-region) return nil. */ | |
a7f96a35 | 615 | fun = Findirect_function (*btp->function, Qnil); |
e0f331ab GM |
616 | if (exclude_subrs_p && SUBRP (fun)) |
617 | return 0; | |
177c0ea7 | 618 | |
db9f0278 JB |
619 | /* btp points to the frame of a Lisp function that called interactive-p. |
620 | Return t if that function was called interactively. */ | |
621 | if (btp && btp->next && EQ (*btp->next->function, Qcall_interactively)) | |
e0f331ab GM |
622 | return 1; |
623 | return 0; | |
db9f0278 JB |
624 | } |
625 | ||
e0f331ab | 626 | |
db9f0278 | 627 | DEFUN ("defun", Fdefun, Sdefun, 2, UNEVALLED, 0, |
9dbc9081 PJ |
628 | doc: /* Define NAME as a function. |
629 | The definition is (lambda ARGLIST [DOCSTRING] BODY...). | |
630 | See also the function `interactive'. | |
7a25dc6d | 631 | usage: (defun NAME ARGLIST [DOCSTRING] BODY...) */) |
5842a27b | 632 | (Lisp_Object args) |
db9f0278 JB |
633 | { |
634 | register Lisp_Object fn_name; | |
635 | register Lisp_Object defn; | |
636 | ||
637 | fn_name = Fcar (args); | |
6992a868 | 638 | CHECK_SYMBOL (fn_name); |
db9f0278 | 639 | defn = Fcons (Qlambda, Fcdr (args)); |
265a9e55 | 640 | if (!NILP (Vpurify_flag)) |
db9f0278 | 641 | defn = Fpurecopy (defn); |
f58e9f8c RS |
642 | if (CONSP (XSYMBOL (fn_name)->function) |
643 | && EQ (XCAR (XSYMBOL (fn_name)->function), Qautoload)) | |
644 | LOADHIST_ATTACH (Fcons (Qt, fn_name)); | |
db9f0278 | 645 | Ffset (fn_name, defn); |
6fd797f5 | 646 | LOADHIST_ATTACH (Fcons (Qdefun, fn_name)); |
db9f0278 JB |
647 | return fn_name; |
648 | } | |
649 | ||
650 | DEFUN ("defmacro", Fdefmacro, Sdefmacro, 2, UNEVALLED, 0, | |
9dbc9081 | 651 | doc: /* Define NAME as a macro. |
0654d6e3 RS |
652 | The actual definition looks like |
653 | (macro lambda ARGLIST [DOCSTRING] [DECL] BODY...). | |
9dbc9081 PJ |
654 | When the macro is called, as in (NAME ARGS...), |
655 | the function (lambda ARGLIST BODY...) is applied to | |
656 | the list ARGS... as it appears in the expression, | |
657 | and the result should be a form to be evaluated instead of the original. | |
0654d6e3 RS |
658 | |
659 | DECL is a declaration, optional, which can specify how to indent | |
4ba50634 JPW |
660 | calls to this macro, how Edebug should handle it, and which argument |
661 | should be treated as documentation. It looks like this: | |
0654d6e3 RS |
662 | (declare SPECS...) |
663 | The elements can look like this: | |
664 | (indent INDENT) | |
665 | Set NAME's `lisp-indent-function' property to INDENT. | |
666 | ||
e509f168 | 667 | (debug DEBUG) |
0654d6e3 | 668 | Set NAME's `edebug-form-spec' property to DEBUG. (This is |
7d5c86e5 | 669 | equivalent to writing a `def-edebug-spec' for the macro.) |
4ba50634 JPW |
670 | |
671 | (doc-string ELT) | |
672 | Set NAME's `doc-string-elt' property to ELT. | |
673 | ||
0654d6e3 | 674 | usage: (defmacro NAME ARGLIST [DOCSTRING] [DECL] BODY...) */) |
5842a27b | 675 | (Lisp_Object args) |
db9f0278 JB |
676 | { |
677 | register Lisp_Object fn_name; | |
678 | register Lisp_Object defn; | |
d6edd563 | 679 | Lisp_Object lambda_list, doc, tail; |
db9f0278 JB |
680 | |
681 | fn_name = Fcar (args); | |
8e975df9 | 682 | CHECK_SYMBOL (fn_name); |
d6edd563 GM |
683 | lambda_list = Fcar (Fcdr (args)); |
684 | tail = Fcdr (Fcdr (args)); | |
685 | ||
686 | doc = Qnil; | |
687 | if (STRINGP (Fcar (tail))) | |
688 | { | |
e509f168 SM |
689 | doc = XCAR (tail); |
690 | tail = XCDR (tail); | |
d6edd563 GM |
691 | } |
692 | ||
0193499f SM |
693 | if (CONSP (Fcar (tail)) |
694 | && EQ (Fcar (Fcar (tail)), Qdeclare)) | |
d6edd563 GM |
695 | { |
696 | if (!NILP (Vmacro_declaration_function)) | |
697 | { | |
698 | struct gcpro gcpro1; | |
699 | GCPRO1 (args); | |
700 | call2 (Vmacro_declaration_function, fn_name, Fcar (tail)); | |
701 | UNGCPRO; | |
702 | } | |
177c0ea7 | 703 | |
d6edd563 GM |
704 | tail = Fcdr (tail); |
705 | } | |
706 | ||
707 | if (NILP (doc)) | |
708 | tail = Fcons (lambda_list, tail); | |
709 | else | |
710 | tail = Fcons (lambda_list, Fcons (doc, tail)); | |
711 | defn = Fcons (Qmacro, Fcons (Qlambda, tail)); | |
177c0ea7 | 712 | |
265a9e55 | 713 | if (!NILP (Vpurify_flag)) |
db9f0278 | 714 | defn = Fpurecopy (defn); |
f58e9f8c RS |
715 | if (CONSP (XSYMBOL (fn_name)->function) |
716 | && EQ (XCAR (XSYMBOL (fn_name)->function), Qautoload)) | |
717 | LOADHIST_ATTACH (Fcons (Qt, fn_name)); | |
db9f0278 | 718 | Ffset (fn_name, defn); |
6fd797f5 | 719 | LOADHIST_ATTACH (Fcons (Qdefun, fn_name)); |
db9f0278 JB |
720 | return fn_name; |
721 | } | |
722 | ||
19cebf5a | 723 | |
1848d15d | 724 | DEFUN ("defvaralias", Fdefvaralias, Sdefvaralias, 2, 3, 0, |
4a9308b8 | 725 | doc: /* Make NEW-ALIAS a variable alias for symbol BASE-VARIABLE. |
e102f0d8 | 726 | Aliased variables always have the same value; setting one sets the other. |
4a9308b8 | 727 | Third arg DOCSTRING, if non-nil, is documentation for NEW-ALIAS. If it is |
dd60787c GM |
728 | omitted or nil, NEW-ALIAS gets the documentation string of BASE-VARIABLE, |
729 | or of the variable at the end of the chain of aliases, if BASE-VARIABLE is | |
730 | itself an alias. If NEW-ALIAS is bound, and BASE-VARIABLE is not, | |
731 | then the value of BASE-VARIABLE is set to that of NEW-ALIAS. | |
4a9308b8 | 732 | The return value is BASE-VARIABLE. */) |
5842a27b | 733 | (Lisp_Object new_alias, Lisp_Object base_variable, Lisp_Object docstring) |
19cebf5a GM |
734 | { |
735 | struct Lisp_Symbol *sym; | |
1848d15d | 736 | |
4a9308b8 JB |
737 | CHECK_SYMBOL (new_alias); |
738 | CHECK_SYMBOL (base_variable); | |
19cebf5a | 739 | |
4a9308b8 | 740 | sym = XSYMBOL (new_alias); |
ce5b453a SM |
741 | |
742 | if (sym->constant) | |
178f2507 SM |
743 | /* Not sure why, but why not? */ |
744 | error ("Cannot make a constant an alias"); | |
ce5b453a SM |
745 | |
746 | switch (sym->redirect) | |
747 | { | |
748 | case SYMBOL_FORWARDED: | |
749 | error ("Cannot make an internal variable an alias"); | |
750 | case SYMBOL_LOCALIZED: | |
751 | error ("Don't know how to make a localized variable an alias"); | |
752 | } | |
753 | ||
dd60787c | 754 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg00834.html |
ce5b453a SM |
755 | If n_a is bound, but b_v is not, set the value of b_v to n_a, |
756 | so that old-code that affects n_a before the aliasing is setup | |
757 | still works. */ | |
758 | if (NILP (Fboundp (base_variable))) | |
94b612ad | 759 | set_internal (base_variable, find_symbol_value (new_alias), Qnil, 1); |
ce5b453a SM |
760 | |
761 | { | |
762 | struct specbinding *p; | |
763 | ||
764 | for (p = specpdl_ptr - 1; p >= specpdl; p--) | |
765 | if (p->func == NULL | |
766 | && (EQ (new_alias, | |
767 | CONSP (p->symbol) ? XCAR (p->symbol) : p->symbol))) | |
768 | error ("Don't know how to make a let-bound variable an alias"); | |
769 | } | |
770 | ||
771 | sym->redirect = SYMBOL_VARALIAS; | |
772 | SET_SYMBOL_ALIAS (sym, XSYMBOL (base_variable)); | |
4a9308b8 JB |
773 | sym->constant = SYMBOL_CONSTANT_P (base_variable); |
774 | LOADHIST_ATTACH (new_alias); | |
ce5b453a SM |
775 | /* Even if docstring is nil: remove old docstring. */ |
776 | Fput (new_alias, Qvariable_documentation, docstring); | |
1848d15d | 777 | |
4a9308b8 | 778 | return base_variable; |
19cebf5a GM |
779 | } |
780 | ||
781 | ||
db9f0278 | 782 | DEFUN ("defvar", Fdefvar, Sdefvar, 1, UNEVALLED, 0, |
29357847 | 783 | doc: /* Define SYMBOL as a variable, and return SYMBOL. |
9dbc9081 PJ |
784 | You are not required to define a variable in order to use it, |
785 | but the definition can supply documentation and an initial value | |
786 | in a way that tags can recognize. | |
787 | ||
788 | INITVALUE is evaluated, and used to set SYMBOL, only if SYMBOL's value is void. | |
789 | If SYMBOL is buffer-local, its default value is what is set; | |
790 | buffer-local values are not affected. | |
791 | INITVALUE and DOCSTRING are optional. | |
792 | If DOCSTRING starts with *, this variable is identified as a user option. | |
793 | This means that M-x set-variable recognizes it. | |
794 | See also `user-variable-p'. | |
795 | If INITVALUE is missing, SYMBOL's value is not set. | |
733f68b6 LT |
796 | |
797 | If SYMBOL has a local binding, then this form affects the local | |
798 | binding. This is usually not what you want. Thus, if you need to | |
799 | load a file defining variables, with this form or with `defconst' or | |
800 | `defcustom', you should always load that file _outside_ any bindings | |
801 | for these variables. \(`defconst' and `defcustom' behave similarly in | |
802 | this respect.) | |
2df5238c | 803 | usage: (defvar SYMBOL &optional INITVALUE DOCSTRING) */) |
5842a27b | 804 | (Lisp_Object args) |
db9f0278 | 805 | { |
a42ba017 | 806 | register Lisp_Object sym, tem, tail; |
db9f0278 JB |
807 | |
808 | sym = Fcar (args); | |
a42ba017 RS |
809 | tail = Fcdr (args); |
810 | if (!NILP (Fcdr (Fcdr (tail)))) | |
921baa95 | 811 | error ("Too many arguments"); |
a42ba017 | 812 | |
33568849 | 813 | tem = Fdefault_boundp (sym); |
a42ba017 | 814 | if (!NILP (tail)) |
db9f0278 | 815 | { |
1c9916a1 SM |
816 | if (SYMBOL_CONSTANT_P (sym)) |
817 | { | |
818 | /* For upward compatibility, allow (defvar :foo (quote :foo)). */ | |
819 | Lisp_Object tem = Fcar (tail); | |
820 | if (! (CONSP (tem) | |
821 | && EQ (XCAR (tem), Qquote) | |
822 | && CONSP (XCDR (tem)) | |
823 | && EQ (XCAR (XCDR (tem)), sym))) | |
824 | error ("Constant symbol `%s' specified in defvar", | |
825 | SDATA (SYMBOL_NAME (sym))); | |
826 | } | |
827 | ||
265a9e55 | 828 | if (NILP (tem)) |
33568849 | 829 | Fset_default (sym, Feval (Fcar (tail))); |
d0bce91e SM |
830 | else |
831 | { /* Check if there is really a global binding rather than just a let | |
832 | binding that shadows the global unboundness of the var. */ | |
b28d0d9a | 833 | volatile struct specbinding *pdl = specpdl_ptr; |
d0bce91e SM |
834 | while (--pdl >= specpdl) |
835 | { | |
836 | if (EQ (pdl->symbol, sym) && !pdl->func | |
837 | && EQ (pdl->old_value, Qunbound)) | |
838 | { | |
839 | message_with_string ("Warning: defvar ignored because %s is let-bound", | |
840 | SYMBOL_NAME (sym), 1); | |
841 | break; | |
842 | } | |
843 | } | |
844 | } | |
33568849 | 845 | tail = Fcdr (tail); |
e509f168 SM |
846 | tem = Fcar (tail); |
847 | if (!NILP (tem)) | |
33568849 | 848 | { |
33568849 SM |
849 | if (!NILP (Vpurify_flag)) |
850 | tem = Fpurecopy (tem); | |
851 | Fput (sym, Qvariable_documentation, tem); | |
852 | } | |
6fd797f5 | 853 | LOADHIST_ATTACH (sym); |
db9f0278 | 854 | } |
33568849 | 855 | else |
d7c1d0fc RS |
856 | /* Simple (defvar <var>) should not count as a definition at all. |
857 | It could get in the way of other definitions, and unloading this | |
858 | package could try to make the variable unbound. */ | |
addf35fd AS |
859 | ; |
860 | ||
db9f0278 JB |
861 | return sym; |
862 | } | |
863 | ||
864 | DEFUN ("defconst", Fdefconst, Sdefconst, 2, UNEVALLED, 0, | |
9dbc9081 PJ |
865 | doc: /* Define SYMBOL as a constant variable. |
866 | The intent is that neither programs nor users should ever change this value. | |
867 | Always sets the value of SYMBOL to the result of evalling INITVALUE. | |
868 | If SYMBOL is buffer-local, its default value is what is set; | |
869 | buffer-local values are not affected. | |
870 | DOCSTRING is optional. | |
733f68b6 LT |
871 | |
872 | If SYMBOL has a local binding, then this form sets the local binding's | |
873 | value. However, you should normally not make local bindings for | |
874 | variables defined with this form. | |
7a25dc6d | 875 | usage: (defconst SYMBOL INITVALUE [DOCSTRING]) */) |
5842a27b | 876 | (Lisp_Object args) |
db9f0278 JB |
877 | { |
878 | register Lisp_Object sym, tem; | |
879 | ||
880 | sym = Fcar (args); | |
a42ba017 | 881 | if (!NILP (Fcdr (Fcdr (Fcdr (args))))) |
921baa95 | 882 | error ("Too many arguments"); |
a42ba017 | 883 | |
1182a7cb DL |
884 | tem = Feval (Fcar (Fcdr (args))); |
885 | if (!NILP (Vpurify_flag)) | |
886 | tem = Fpurecopy (tem); | |
887 | Fset_default (sym, tem); | |
db9f0278 | 888 | tem = Fcar (Fcdr (Fcdr (args))); |
265a9e55 | 889 | if (!NILP (tem)) |
db9f0278 | 890 | { |
265a9e55 | 891 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
892 | tem = Fpurecopy (tem); |
893 | Fput (sym, Qvariable_documentation, tem); | |
894 | } | |
873759d5 | 895 | Fput (sym, Qrisky_local_variable, Qt); |
6fd797f5 | 896 | LOADHIST_ATTACH (sym); |
db9f0278 JB |
897 | return sym; |
898 | } | |
899 | ||
606cdb89 JB |
900 | /* Error handler used in Fuser_variable_p. */ |
901 | static Lisp_Object | |
d3da34e0 | 902 | user_variable_p_eh (Lisp_Object ignore) |
606cdb89 JB |
903 | { |
904 | return Qnil; | |
905 | } | |
906 | ||
40a69fac SM |
907 | static Lisp_Object |
908 | lisp_indirect_variable (Lisp_Object sym) | |
909 | { | |
910 | XSETSYMBOL (sym, indirect_variable (XSYMBOL (sym))); | |
911 | return sym; | |
912 | } | |
913 | ||
db9f0278 | 914 | DEFUN ("user-variable-p", Fuser_variable_p, Suser_variable_p, 1, 1, 0, |
606cdb89 | 915 | doc: /* Return t if VARIABLE is intended to be set and modified by users. |
9dbc9081 | 916 | \(The alternative is a variable used internally in a Lisp program.) |
606cdb89 JB |
917 | A variable is a user variable if |
918 | \(1) the first character of its documentation is `*', or | |
919 | \(2) it is customizable (its property list contains a non-nil value | |
920 | of `standard-value' or `custom-autoload'), or | |
921 | \(3) it is an alias for another user variable. | |
922 | Return nil if VARIABLE is an alias and there is a loop in the | |
923 | chain of symbols. */) | |
5842a27b | 924 | (Lisp_Object variable) |
db9f0278 JB |
925 | { |
926 | Lisp_Object documentation; | |
177c0ea7 | 927 | |
5e78e475 RS |
928 | if (!SYMBOLP (variable)) |
929 | return Qnil; | |
930 | ||
606cdb89 | 931 | /* If indirect and there's an alias loop, don't check anything else. */ |
ce5b453a | 932 | if (XSYMBOL (variable)->redirect == SYMBOL_VARALIAS |
40a69fac | 933 | && NILP (internal_condition_case_1 (lisp_indirect_variable, variable, |
bb8e180f | 934 | Qt, user_variable_p_eh))) |
606cdb89 JB |
935 | return Qnil; |
936 | ||
937 | while (1) | |
938 | { | |
939 | documentation = Fget (variable, Qvariable_documentation); | |
940 | if (INTEGERP (documentation) && XINT (documentation) < 0) | |
bb8e180f | 941 | return Qt; |
606cdb89 | 942 | if (STRINGP (documentation) |
bb8e180f AS |
943 | && ((unsigned char) SREF (documentation, 0) == '*')) |
944 | return Qt; | |
606cdb89 JB |
945 | /* If it is (STRING . INTEGER), a negative integer means a user variable. */ |
946 | if (CONSP (documentation) | |
bb8e180f AS |
947 | && STRINGP (XCAR (documentation)) |
948 | && INTEGERP (XCDR (documentation)) | |
949 | && XINT (XCDR (documentation)) < 0) | |
950 | return Qt; | |
606cdb89 JB |
951 | /* Customizable? See `custom-variable-p'. */ |
952 | if ((!NILP (Fget (variable, intern ("standard-value")))) | |
bb8e180f AS |
953 | || (!NILP (Fget (variable, intern ("custom-autoload"))))) |
954 | return Qt; | |
606cdb89 | 955 | |
ce5b453a | 956 | if (!(XSYMBOL (variable)->redirect == SYMBOL_VARALIAS)) |
bb8e180f | 957 | return Qnil; |
606cdb89 JB |
958 | |
959 | /* An indirect variable? Let's follow the chain. */ | |
ce5b453a | 960 | XSETSYMBOL (variable, SYMBOL_ALIAS (XSYMBOL (variable))); |
606cdb89 | 961 | } |
177c0ea7 | 962 | } |
db9f0278 JB |
963 | \f |
964 | DEFUN ("let*", FletX, SletX, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
965 | doc: /* Bind variables according to VARLIST then eval BODY. |
966 | The value of the last form in BODY is returned. | |
967 | Each element of VARLIST is a symbol (which is bound to nil) | |
968 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
969 | Each VALUEFORM can refer to the symbols already bound by this VARLIST. | |
7a25dc6d | 970 | usage: (let* VARLIST BODY...) */) |
5842a27b | 971 | (Lisp_Object args) |
db9f0278 JB |
972 | { |
973 | Lisp_Object varlist, val, elt; | |
aed13378 | 974 | int count = SPECPDL_INDEX (); |
db9f0278 JB |
975 | struct gcpro gcpro1, gcpro2, gcpro3; |
976 | ||
977 | GCPRO3 (args, elt, varlist); | |
978 | ||
979 | varlist = Fcar (args); | |
265a9e55 | 980 | while (!NILP (varlist)) |
db9f0278 JB |
981 | { |
982 | QUIT; | |
983 | elt = Fcar (varlist); | |
90165123 | 984 | if (SYMBOLP (elt)) |
db9f0278 | 985 | specbind (elt, Qnil); |
08564963 | 986 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 987 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
988 | else |
989 | { | |
990 | val = Feval (Fcar (Fcdr (elt))); | |
991 | specbind (Fcar (elt), val); | |
992 | } | |
993 | varlist = Fcdr (varlist); | |
994 | } | |
995 | UNGCPRO; | |
996 | val = Fprogn (Fcdr (args)); | |
997 | return unbind_to (count, val); | |
998 | } | |
999 | ||
1000 | DEFUN ("let", Flet, Slet, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1001 | doc: /* Bind variables according to VARLIST then eval BODY. |
1002 | The value of the last form in BODY is returned. | |
1003 | Each element of VARLIST is a symbol (which is bound to nil) | |
1004 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
1005 | All the VALUEFORMs are evalled before any symbols are bound. | |
7a25dc6d | 1006 | usage: (let VARLIST BODY...) */) |
5842a27b | 1007 | (Lisp_Object args) |
db9f0278 JB |
1008 | { |
1009 | Lisp_Object *temps, tem; | |
1010 | register Lisp_Object elt, varlist; | |
aed13378 | 1011 | int count = SPECPDL_INDEX (); |
db9f0278 JB |
1012 | register int argnum; |
1013 | struct gcpro gcpro1, gcpro2; | |
3a7a9129 | 1014 | USE_SAFE_ALLOCA; |
db9f0278 JB |
1015 | |
1016 | varlist = Fcar (args); | |
1017 | ||
1018 | /* Make space to hold the values to give the bound variables */ | |
1019 | elt = Flength (varlist); | |
b72e0717 | 1020 | SAFE_ALLOCA_LISP (temps, XFASTINT (elt)); |
db9f0278 JB |
1021 | |
1022 | /* Compute the values and store them in `temps' */ | |
1023 | ||
1024 | GCPRO2 (args, *temps); | |
1025 | gcpro2.nvars = 0; | |
1026 | ||
67ee9f6e | 1027 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 JB |
1028 | { |
1029 | QUIT; | |
67ee9f6e | 1030 | elt = XCAR (varlist); |
90165123 | 1031 | if (SYMBOLP (elt)) |
db9f0278 | 1032 | temps [argnum++] = Qnil; |
08564963 | 1033 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 1034 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
1035 | else |
1036 | temps [argnum++] = Feval (Fcar (Fcdr (elt))); | |
1037 | gcpro2.nvars = argnum; | |
1038 | } | |
1039 | UNGCPRO; | |
1040 | ||
1041 | varlist = Fcar (args); | |
67ee9f6e | 1042 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 | 1043 | { |
67ee9f6e | 1044 | elt = XCAR (varlist); |
db9f0278 | 1045 | tem = temps[argnum++]; |
90165123 | 1046 | if (SYMBOLP (elt)) |
db9f0278 JB |
1047 | specbind (elt, tem); |
1048 | else | |
1049 | specbind (Fcar (elt), tem); | |
1050 | } | |
1051 | ||
1052 | elt = Fprogn (Fcdr (args)); | |
3a7a9129 | 1053 | SAFE_FREE (); |
db9f0278 JB |
1054 | return unbind_to (count, elt); |
1055 | } | |
1056 | ||
1057 | DEFUN ("while", Fwhile, Swhile, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1058 | doc: /* If TEST yields non-nil, eval BODY... and repeat. |
1059 | The order of execution is thus TEST, BODY, TEST, BODY and so on | |
1060 | until TEST returns nil. | |
7a25dc6d | 1061 | usage: (while TEST BODY...) */) |
5842a27b | 1062 | (Lisp_Object args) |
db9f0278 | 1063 | { |
2b9bde76 | 1064 | Lisp_Object test, body; |
db9f0278 JB |
1065 | struct gcpro gcpro1, gcpro2; |
1066 | ||
1067 | GCPRO2 (test, body); | |
1068 | ||
1069 | test = Fcar (args); | |
1070 | body = Fcdr (args); | |
2b9bde76 | 1071 | while (!NILP (Feval (test))) |
db9f0278 JB |
1072 | { |
1073 | QUIT; | |
1074 | Fprogn (body); | |
1075 | } | |
1076 | ||
1077 | UNGCPRO; | |
1078 | return Qnil; | |
1079 | } | |
1080 | ||
1081 | DEFUN ("macroexpand", Fmacroexpand, Smacroexpand, 1, 2, 0, | |
9dbc9081 PJ |
1082 | doc: /* Return result of expanding macros at top level of FORM. |
1083 | If FORM is not a macro call, it is returned unchanged. | |
1084 | Otherwise, the macro is expanded and the expansion is considered | |
1085 | in place of FORM. When a non-macro-call results, it is returned. | |
1086 | ||
1087 | The second optional arg ENVIRONMENT specifies an environment of macro | |
1088 | definitions to shadow the loaded ones for use in file byte-compilation. */) | |
5842a27b | 1089 | (Lisp_Object form, Lisp_Object environment) |
db9f0278 | 1090 | { |
23d6b5a6 | 1091 | /* With cleanups from Hallvard Furuseth. */ |
db9f0278 JB |
1092 | register Lisp_Object expander, sym, def, tem; |
1093 | ||
1094 | while (1) | |
1095 | { | |
1096 | /* Come back here each time we expand a macro call, | |
1097 | in case it expands into another macro call. */ | |
90165123 | 1098 | if (!CONSP (form)) |
db9f0278 | 1099 | break; |
23d6b5a6 | 1100 | /* Set SYM, give DEF and TEM right values in case SYM is not a symbol. */ |
03699b14 | 1101 | def = sym = XCAR (form); |
23d6b5a6 | 1102 | tem = Qnil; |
db9f0278 JB |
1103 | /* Trace symbols aliases to other symbols |
1104 | until we get a symbol that is not an alias. */ | |
90165123 | 1105 | while (SYMBOLP (def)) |
db9f0278 JB |
1106 | { |
1107 | QUIT; | |
23d6b5a6 | 1108 | sym = def; |
79e8bfbf | 1109 | tem = Fassq (sym, environment); |
265a9e55 | 1110 | if (NILP (tem)) |
db9f0278 JB |
1111 | { |
1112 | def = XSYMBOL (sym)->function; | |
23d6b5a6 JB |
1113 | if (!EQ (def, Qunbound)) |
1114 | continue; | |
db9f0278 | 1115 | } |
23d6b5a6 | 1116 | break; |
db9f0278 | 1117 | } |
79e8bfbf | 1118 | /* Right now TEM is the result from SYM in ENVIRONMENT, |
db9f0278 | 1119 | and if TEM is nil then DEF is SYM's function definition. */ |
265a9e55 | 1120 | if (NILP (tem)) |
db9f0278 | 1121 | { |
79e8bfbf | 1122 | /* SYM is not mentioned in ENVIRONMENT. |
db9f0278 | 1123 | Look at its function definition. */ |
90165123 | 1124 | if (EQ (def, Qunbound) || !CONSP (def)) |
db9f0278 JB |
1125 | /* Not defined or definition not suitable */ |
1126 | break; | |
03699b14 | 1127 | if (EQ (XCAR (def), Qautoload)) |
db9f0278 JB |
1128 | { |
1129 | /* Autoloading function: will it be a macro when loaded? */ | |
ee9ee63c | 1130 | tem = Fnth (make_number (4), def); |
47ccd8b6 | 1131 | if (EQ (tem, Qt) || EQ (tem, Qmacro)) |
ee9ee63c JB |
1132 | /* Yes, load it and try again. */ |
1133 | { | |
ca20916b RS |
1134 | struct gcpro gcpro1; |
1135 | GCPRO1 (form); | |
ee9ee63c | 1136 | do_autoload (def, sym); |
ca20916b | 1137 | UNGCPRO; |
ee9ee63c JB |
1138 | continue; |
1139 | } | |
1140 | else | |
db9f0278 | 1141 | break; |
db9f0278 | 1142 | } |
03699b14 | 1143 | else if (!EQ (XCAR (def), Qmacro)) |
db9f0278 | 1144 | break; |
03699b14 | 1145 | else expander = XCDR (def); |
db9f0278 JB |
1146 | } |
1147 | else | |
1148 | { | |
03699b14 | 1149 | expander = XCDR (tem); |
265a9e55 | 1150 | if (NILP (expander)) |
db9f0278 JB |
1151 | break; |
1152 | } | |
03699b14 | 1153 | form = apply1 (expander, XCDR (form)); |
db9f0278 JB |
1154 | } |
1155 | return form; | |
1156 | } | |
1157 | \f | |
1158 | DEFUN ("catch", Fcatch, Scatch, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1159 | doc: /* Eval BODY allowing nonlocal exits using `throw'. |
1160 | TAG is evalled to get the tag to use; it must not be nil. | |
1161 | ||
1162 | Then the BODY is executed. | |
1d632ccf | 1163 | Within BODY, a call to `throw' with the same TAG exits BODY and this `catch'. |
9dbc9081 PJ |
1164 | If no throw happens, `catch' returns the value of the last BODY form. |
1165 | If a throw happens, it specifies the value to return from `catch'. | |
7a25dc6d | 1166 | usage: (catch TAG BODY...) */) |
5842a27b | 1167 | (Lisp_Object args) |
db9f0278 JB |
1168 | { |
1169 | register Lisp_Object tag; | |
1170 | struct gcpro gcpro1; | |
1171 | ||
1172 | GCPRO1 (args); | |
1173 | tag = Feval (Fcar (args)); | |
1174 | UNGCPRO; | |
1175 | return internal_catch (tag, Fprogn, Fcdr (args)); | |
1176 | } | |
1177 | ||
1178 | /* Set up a catch, then call C function FUNC on argument ARG. | |
1179 | FUNC should return a Lisp_Object. | |
1180 | This is how catches are done from within C code. */ | |
1181 | ||
1182 | Lisp_Object | |
d3da34e0 | 1183 | internal_catch (Lisp_Object tag, Lisp_Object (*func) (Lisp_Object), Lisp_Object arg) |
db9f0278 JB |
1184 | { |
1185 | /* This structure is made part of the chain `catchlist'. */ | |
1186 | struct catchtag c; | |
1187 | ||
1188 | /* Fill in the components of c, and put it on the list. */ | |
1189 | c.next = catchlist; | |
1190 | c.tag = tag; | |
1191 | c.val = Qnil; | |
1192 | c.backlist = backtrace_list; | |
1193 | c.handlerlist = handlerlist; | |
1194 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1195 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1196 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1197 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1198 | c.gcpro = gcprolist; |
bcf28080 | 1199 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1200 | catchlist = &c; |
1201 | ||
1202 | /* Call FUNC. */ | |
1203 | if (! _setjmp (c.jmp)) | |
1204 | c.val = (*func) (arg); | |
1205 | ||
1206 | /* Throw works by a longjmp that comes right here. */ | |
1207 | catchlist = c.next; | |
1208 | return c.val; | |
1209 | } | |
1210 | ||
ba410f40 JB |
1211 | /* Unwind the specbind, catch, and handler stacks back to CATCH, and |
1212 | jump to that CATCH, returning VALUE as the value of that catch. | |
db9f0278 | 1213 | |
ba410f40 JB |
1214 | This is the guts Fthrow and Fsignal; they differ only in the way |
1215 | they choose the catch tag to throw to. A catch tag for a | |
1216 | condition-case form has a TAG of Qnil. | |
db9f0278 | 1217 | |
ba410f40 JB |
1218 | Before each catch is discarded, unbind all special bindings and |
1219 | execute all unwind-protect clauses made above that catch. Unwind | |
1220 | the handler stack as we go, so that the proper handlers are in | |
1221 | effect for each unwind-protect clause we run. At the end, restore | |
1222 | some static info saved in CATCH, and longjmp to the location | |
1223 | specified in the | |
1224 | ||
1225 | This is used for correct unwinding in Fthrow and Fsignal. */ | |
db9f0278 JB |
1226 | |
1227 | static void | |
d3da34e0 | 1228 | unwind_to_catch (struct catchtag *catch, Lisp_Object value) |
db9f0278 JB |
1229 | { |
1230 | register int last_time; | |
1231 | ||
ba410f40 JB |
1232 | /* Save the value in the tag. */ |
1233 | catch->val = value; | |
1234 | ||
0b31741c | 1235 | /* Restore certain special C variables. */ |
1cdc3155 | 1236 | set_poll_suppress_count (catch->poll_suppress_count); |
c1788fbc | 1237 | UNBLOCK_INPUT_TO (catch->interrupt_input_blocked); |
0b31741c | 1238 | handling_signal = 0; |
69bbd6bd | 1239 | immediate_quit = 0; |
82da7701 | 1240 | |
db9f0278 JB |
1241 | do |
1242 | { | |
1243 | last_time = catchlist == catch; | |
82da7701 JB |
1244 | |
1245 | /* Unwind the specpdl stack, and then restore the proper set of | |
bb8e180f | 1246 | handlers. */ |
db9f0278 JB |
1247 | unbind_to (catchlist->pdlcount, Qnil); |
1248 | handlerlist = catchlist->handlerlist; | |
1249 | catchlist = catchlist->next; | |
1250 | } | |
1251 | while (! last_time); | |
1252 | ||
a2a103bb | 1253 | #if HAVE_X_WINDOWS |
88019a63 RS |
1254 | /* If x_catch_errors was done, turn it off now. |
1255 | (First we give unbind_to a chance to do that.) */ | |
e6aee454 | 1256 | #if 0 /* This would disable x_catch_errors after x_connection_closed. |
bb8e180f AS |
1257 | The catch must remain in effect during that delicate |
1258 | state. --lorentey */ | |
88019a63 | 1259 | x_fully_uncatch_errors (); |
e6aee454 | 1260 | #endif |
a2a103bb | 1261 | #endif |
88019a63 | 1262 | |
bcf28080 | 1263 | byte_stack_list = catch->byte_stack; |
db9f0278 | 1264 | gcprolist = catch->gcpro; |
15934ffa RS |
1265 | #ifdef DEBUG_GCPRO |
1266 | if (gcprolist != 0) | |
1267 | gcpro_level = gcprolist->level + 1; | |
1268 | else | |
1269 | gcpro_level = 0; | |
1270 | #endif | |
db9f0278 JB |
1271 | backtrace_list = catch->backlist; |
1272 | lisp_eval_depth = catch->lisp_eval_depth; | |
177c0ea7 | 1273 | |
ba410f40 | 1274 | _longjmp (catch->jmp, 1); |
db9f0278 JB |
1275 | } |
1276 | ||
1277 | DEFUN ("throw", Fthrow, Sthrow, 2, 2, 0, | |
9dbc9081 PJ |
1278 | doc: /* Throw to the catch for TAG and return VALUE from it. |
1279 | Both TAG and VALUE are evalled. */) | |
5842a27b | 1280 | (register Lisp_Object tag, Lisp_Object value) |
db9f0278 JB |
1281 | { |
1282 | register struct catchtag *c; | |
1283 | ||
8788120f KS |
1284 | if (!NILP (tag)) |
1285 | for (c = catchlist; c; c = c->next) | |
1286 | { | |
1287 | if (EQ (c->tag, tag)) | |
1288 | unwind_to_catch (c, value); | |
1289 | } | |
734d55a2 | 1290 | xsignal2 (Qno_catch, tag, value); |
db9f0278 JB |
1291 | } |
1292 | ||
1293 | ||
1294 | DEFUN ("unwind-protect", Funwind_protect, Sunwind_protect, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1295 | doc: /* Do BODYFORM, protecting with UNWINDFORMS. |
1296 | If BODYFORM completes normally, its value is returned | |
1297 | after executing the UNWINDFORMS. | |
1298 | If BODYFORM exits nonlocally, the UNWINDFORMS are executed anyway. | |
7a25dc6d | 1299 | usage: (unwind-protect BODYFORM UNWINDFORMS...) */) |
5842a27b | 1300 | (Lisp_Object args) |
db9f0278 JB |
1301 | { |
1302 | Lisp_Object val; | |
aed13378 | 1303 | int count = SPECPDL_INDEX (); |
db9f0278 | 1304 | |
04b28167 | 1305 | record_unwind_protect (Fprogn, Fcdr (args)); |
db9f0278 | 1306 | val = Feval (Fcar (args)); |
177c0ea7 | 1307 | return unbind_to (count, val); |
db9f0278 JB |
1308 | } |
1309 | \f | |
1310 | /* Chain of condition handlers currently in effect. | |
1311 | The elements of this chain are contained in the stack frames | |
1312 | of Fcondition_case and internal_condition_case. | |
1313 | When an error is signaled (by calling Fsignal, below), | |
1314 | this chain is searched for an element that applies. */ | |
1315 | ||
1316 | struct handler *handlerlist; | |
1317 | ||
1318 | DEFUN ("condition-case", Fcondition_case, Scondition_case, 2, UNEVALLED, 0, | |
9dbc9081 | 1319 | doc: /* Regain control when an error is signaled. |
1b1acc13 | 1320 | Executes BODYFORM and returns its value if no error happens. |
9dbc9081 PJ |
1321 | Each element of HANDLERS looks like (CONDITION-NAME BODY...) |
1322 | where the BODY is made of Lisp expressions. | |
1323 | ||
1324 | A handler is applicable to an error | |
1325 | if CONDITION-NAME is one of the error's condition names. | |
1326 | If an error happens, the first applicable handler is run. | |
1327 | ||
1328 | The car of a handler may be a list of condition names | |
c997bb25 | 1329 | instead of a single condition name. Then it handles all of them. |
9dbc9081 | 1330 | |
c997bb25 RS |
1331 | When a handler handles an error, control returns to the `condition-case' |
1332 | and it executes the handler's BODY... | |
d0acbbaf | 1333 | with VAR bound to (ERROR-SYMBOL . SIGNAL-DATA) from the error. |
bb8e180f | 1334 | \(If VAR is nil, the handler can't access that information.) |
c997bb25 RS |
1335 | Then the value of the last BODY form is returned from the `condition-case' |
1336 | expression. | |
9dbc9081 | 1337 | |
9dbc9081 | 1338 | See also the function `signal' for more info. |
2b47b74d | 1339 | usage: (condition-case VAR BODYFORM &rest HANDLERS) */) |
bb8e180f | 1340 | (Lisp_Object args) |
db9f0278 | 1341 | { |
17401c97 GM |
1342 | register Lisp_Object bodyform, handlers; |
1343 | volatile Lisp_Object var; | |
db9f0278 | 1344 | |
82da7701 JB |
1345 | var = Fcar (args); |
1346 | bodyform = Fcar (Fcdr (args)); | |
1347 | handlers = Fcdr (Fcdr (args)); | |
ee830945 RS |
1348 | |
1349 | return internal_lisp_condition_case (var, bodyform, handlers); | |
1350 | } | |
1351 | ||
1352 | /* Like Fcondition_case, but the args are separate | |
1353 | rather than passed in a list. Used by Fbyte_code. */ | |
1354 | ||
1355 | Lisp_Object | |
d3da34e0 JB |
1356 | internal_lisp_condition_case (volatile Lisp_Object var, Lisp_Object bodyform, |
1357 | Lisp_Object handlers) | |
ee830945 RS |
1358 | { |
1359 | Lisp_Object val; | |
1360 | struct catchtag c; | |
1361 | struct handler h; | |
1362 | ||
b7826503 | 1363 | CHECK_SYMBOL (var); |
82da7701 | 1364 | |
2b47b74d | 1365 | for (val = handlers; CONSP (val); val = XCDR (val)) |
82da7701 JB |
1366 | { |
1367 | Lisp_Object tem; | |
2b47b74d | 1368 | tem = XCAR (val); |
5f96776a RS |
1369 | if (! (NILP (tem) |
1370 | || (CONSP (tem) | |
03699b14 KR |
1371 | && (SYMBOLP (XCAR (tem)) |
1372 | || CONSP (XCAR (tem)))))) | |
82da7701 JB |
1373 | error ("Invalid condition handler", tem); |
1374 | } | |
db9f0278 JB |
1375 | |
1376 | c.tag = Qnil; | |
1377 | c.val = Qnil; | |
1378 | c.backlist = backtrace_list; | |
1379 | c.handlerlist = handlerlist; | |
1380 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1381 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1382 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1383 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1384 | c.gcpro = gcprolist; |
bcf28080 | 1385 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1386 | if (_setjmp (c.jmp)) |
1387 | { | |
265a9e55 | 1388 | if (!NILP (h.var)) |
bb8e180f | 1389 | specbind (h.var, c.val); |
9d58218c | 1390 | val = Fprogn (Fcdr (h.chosen_clause)); |
82da7701 JB |
1391 | |
1392 | /* Note that this just undoes the binding of h.var; whoever | |
1393 | longjumped to us unwound the stack to c.pdlcount before | |
1394 | throwing. */ | |
db9f0278 JB |
1395 | unbind_to (c.pdlcount, Qnil); |
1396 | return val; | |
1397 | } | |
1398 | c.next = catchlist; | |
1399 | catchlist = &c; | |
177c0ea7 | 1400 | |
82da7701 JB |
1401 | h.var = var; |
1402 | h.handler = handlers; | |
db9f0278 | 1403 | h.next = handlerlist; |
db9f0278 JB |
1404 | h.tag = &c; |
1405 | handlerlist = &h; | |
1406 | ||
82da7701 | 1407 | val = Feval (bodyform); |
db9f0278 JB |
1408 | catchlist = c.next; |
1409 | handlerlist = h.next; | |
1410 | return val; | |
1411 | } | |
1412 | ||
f029ca5f RS |
1413 | /* Call the function BFUN with no arguments, catching errors within it |
1414 | according to HANDLERS. If there is an error, call HFUN with | |
1415 | one argument which is the data that describes the error: | |
1416 | (SIGNALNAME . DATA) | |
1417 | ||
1418 | HANDLERS can be a list of conditions to catch. | |
1419 | If HANDLERS is Qt, catch all errors. | |
1420 | If HANDLERS is Qerror, catch all errors | |
1421 | but allow the debugger to run if that is enabled. */ | |
1422 | ||
db9f0278 | 1423 | Lisp_Object |
d3da34e0 JB |
1424 | internal_condition_case (Lisp_Object (*bfun) (void), Lisp_Object handlers, |
1425 | Lisp_Object (*hfun) (Lisp_Object)) | |
db9f0278 JB |
1426 | { |
1427 | Lisp_Object val; | |
1428 | struct catchtag c; | |
1429 | struct handler h; | |
1430 | ||
88019a63 RS |
1431 | /* Since Fsignal will close off all calls to x_catch_errors, |
1432 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1433 | #if HAVE_X_WINDOWS |
88019a63 | 1434 | if (x_catching_errors ()) |
01591d17 | 1435 | abort (); |
a2a103bb | 1436 | #endif |
01591d17 | 1437 | |
db9f0278 JB |
1438 | c.tag = Qnil; |
1439 | c.val = Qnil; | |
1440 | c.backlist = backtrace_list; | |
1441 | c.handlerlist = handlerlist; | |
1442 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1443 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1444 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1445 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1446 | c.gcpro = gcprolist; |
bcf28080 | 1447 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1448 | if (_setjmp (c.jmp)) |
1449 | { | |
9d58218c | 1450 | return (*hfun) (c.val); |
db9f0278 JB |
1451 | } |
1452 | c.next = catchlist; | |
1453 | catchlist = &c; | |
1454 | h.handler = handlers; | |
1455 | h.var = Qnil; | |
db9f0278 JB |
1456 | h.next = handlerlist; |
1457 | h.tag = &c; | |
1458 | handlerlist = &h; | |
1459 | ||
1460 | val = (*bfun) (); | |
1461 | catchlist = c.next; | |
1462 | handlerlist = h.next; | |
1463 | return val; | |
1464 | } | |
1465 | ||
2659a09f | 1466 | /* Like internal_condition_case but call BFUN with ARG as its argument. */ |
f029ca5f | 1467 | |
d227775c | 1468 | Lisp_Object |
d3da34e0 JB |
1469 | internal_condition_case_1 (Lisp_Object (*bfun) (Lisp_Object), Lisp_Object arg, |
1470 | Lisp_Object handlers, Lisp_Object (*hfun) (Lisp_Object)) | |
d227775c RS |
1471 | { |
1472 | Lisp_Object val; | |
1473 | struct catchtag c; | |
1474 | struct handler h; | |
1475 | ||
88019a63 RS |
1476 | /* Since Fsignal will close off all calls to x_catch_errors, |
1477 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1478 | #if HAVE_X_WINDOWS |
88019a63 RS |
1479 | if (x_catching_errors ()) |
1480 | abort (); | |
a2a103bb | 1481 | #endif |
88019a63 | 1482 | |
d227775c RS |
1483 | c.tag = Qnil; |
1484 | c.val = Qnil; | |
1485 | c.backlist = backtrace_list; | |
1486 | c.handlerlist = handlerlist; | |
1487 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1488 | c.pdlcount = SPECPDL_INDEX (); |
d227775c | 1489 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1490 | c.interrupt_input_blocked = interrupt_input_blocked; |
d227775c | 1491 | c.gcpro = gcprolist; |
bcf28080 | 1492 | c.byte_stack = byte_stack_list; |
d227775c RS |
1493 | if (_setjmp (c.jmp)) |
1494 | { | |
9d58218c | 1495 | return (*hfun) (c.val); |
d227775c RS |
1496 | } |
1497 | c.next = catchlist; | |
1498 | catchlist = &c; | |
1499 | h.handler = handlers; | |
1500 | h.var = Qnil; | |
1501 | h.next = handlerlist; | |
1502 | h.tag = &c; | |
1503 | handlerlist = &h; | |
1504 | ||
1505 | val = (*bfun) (arg); | |
1506 | catchlist = c.next; | |
1507 | handlerlist = h.next; | |
1508 | return val; | |
1509 | } | |
10b29d41 | 1510 | |
53967e09 CY |
1511 | /* Like internal_condition_case_1 but call BFUN with ARG1 and ARG2 as |
1512 | its arguments. */ | |
1513 | ||
1514 | Lisp_Object | |
178f2507 SM |
1515 | internal_condition_case_2 (Lisp_Object (*bfun) (Lisp_Object, Lisp_Object), |
1516 | Lisp_Object arg1, | |
1517 | Lisp_Object arg2, | |
1518 | Lisp_Object handlers, | |
1519 | Lisp_Object (*hfun) (Lisp_Object)) | |
53967e09 CY |
1520 | { |
1521 | Lisp_Object val; | |
1522 | struct catchtag c; | |
1523 | struct handler h; | |
1524 | ||
1525 | /* Since Fsignal will close off all calls to x_catch_errors, | |
1526 | we will get the wrong results if some are not closed now. */ | |
1527 | #if HAVE_X_WINDOWS | |
1528 | if (x_catching_errors ()) | |
1529 | abort (); | |
1530 | #endif | |
1531 | ||
1532 | c.tag = Qnil; | |
1533 | c.val = Qnil; | |
1534 | c.backlist = backtrace_list; | |
1535 | c.handlerlist = handlerlist; | |
1536 | c.lisp_eval_depth = lisp_eval_depth; | |
1537 | c.pdlcount = SPECPDL_INDEX (); | |
1538 | c.poll_suppress_count = poll_suppress_count; | |
1539 | c.interrupt_input_blocked = interrupt_input_blocked; | |
1540 | c.gcpro = gcprolist; | |
1541 | c.byte_stack = byte_stack_list; | |
1542 | if (_setjmp (c.jmp)) | |
1543 | { | |
1544 | return (*hfun) (c.val); | |
1545 | } | |
1546 | c.next = catchlist; | |
1547 | catchlist = &c; | |
1548 | h.handler = handlers; | |
1549 | h.var = Qnil; | |
1550 | h.next = handlerlist; | |
1551 | h.tag = &c; | |
1552 | handlerlist = &h; | |
1553 | ||
1554 | val = (*bfun) (arg1, arg2); | |
1555 | catchlist = c.next; | |
1556 | handlerlist = h.next; | |
1557 | return val; | |
1558 | } | |
10b29d41 | 1559 | |
2659a09f | 1560 | /* Like internal_condition_case but call BFUN with NARGS as first, |
10b29d41 GM |
1561 | and ARGS as second argument. */ |
1562 | ||
1563 | Lisp_Object | |
178f2507 SM |
1564 | internal_condition_case_n (Lisp_Object (*bfun) (int, Lisp_Object*), |
1565 | int nargs, | |
1566 | Lisp_Object *args, | |
1567 | Lisp_Object handlers, | |
1568 | Lisp_Object (*hfun) (Lisp_Object)) | |
10b29d41 GM |
1569 | { |
1570 | Lisp_Object val; | |
1571 | struct catchtag c; | |
1572 | struct handler h; | |
1573 | ||
88019a63 RS |
1574 | /* Since Fsignal will close off all calls to x_catch_errors, |
1575 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1576 | #if HAVE_X_WINDOWS |
88019a63 RS |
1577 | if (x_catching_errors ()) |
1578 | abort (); | |
a2a103bb | 1579 | #endif |
88019a63 | 1580 | |
10b29d41 GM |
1581 | c.tag = Qnil; |
1582 | c.val = Qnil; | |
1583 | c.backlist = backtrace_list; | |
1584 | c.handlerlist = handlerlist; | |
1585 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1586 | c.pdlcount = SPECPDL_INDEX (); |
10b29d41 | 1587 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1588 | c.interrupt_input_blocked = interrupt_input_blocked; |
10b29d41 GM |
1589 | c.gcpro = gcprolist; |
1590 | c.byte_stack = byte_stack_list; | |
1591 | if (_setjmp (c.jmp)) | |
1592 | { | |
1593 | return (*hfun) (c.val); | |
1594 | } | |
1595 | c.next = catchlist; | |
1596 | catchlist = &c; | |
1597 | h.handler = handlers; | |
1598 | h.var = Qnil; | |
1599 | h.next = handlerlist; | |
1600 | h.tag = &c; | |
1601 | handlerlist = &h; | |
1602 | ||
1603 | val = (*bfun) (nargs, args); | |
1604 | catchlist = c.next; | |
1605 | handlerlist = h.next; | |
1606 | return val; | |
1607 | } | |
1608 | ||
d227775c | 1609 | \f |
f57e2426 | 1610 | static Lisp_Object find_handler_clause (Lisp_Object, Lisp_Object, |
bb8e180f | 1611 | Lisp_Object, Lisp_Object); |
db9f0278 JB |
1612 | |
1613 | DEFUN ("signal", Fsignal, Ssignal, 2, 2, 0, | |
9dbc9081 PJ |
1614 | doc: /* Signal an error. Args are ERROR-SYMBOL and associated DATA. |
1615 | This function does not return. | |
1616 | ||
1617 | An error symbol is a symbol with an `error-conditions' property | |
1618 | that is a list of condition names. | |
1619 | A handler for any of those names will get to handle this signal. | |
1620 | The symbol `error' should normally be one of them. | |
1621 | ||
1622 | DATA should be a list. Its elements are printed as part of the error message. | |
3297ec22 LT |
1623 | See Info anchor `(elisp)Definition of signal' for some details on how this |
1624 | error message is constructed. | |
9dbc9081 PJ |
1625 | If the signal is handled, DATA is made available to the handler. |
1626 | See also the function `condition-case'. */) | |
5842a27b | 1627 | (Lisp_Object error_symbol, Lisp_Object data) |
db9f0278 | 1628 | { |
bfa8ca43 | 1629 | /* When memory is full, ERROR-SYMBOL is nil, |
26631f2b RS |
1630 | and DATA is (REAL-ERROR-SYMBOL . REAL-DATA). |
1631 | That is a special case--don't do this in other situations. */ | |
db9f0278 JB |
1632 | register struct handler *allhandlers = handlerlist; |
1633 | Lisp_Object conditions; | |
c11d3d17 | 1634 | Lisp_Object string; |
1ea9dec4 | 1635 | Lisp_Object real_error_symbol; |
a2ff3819 | 1636 | struct backtrace *bp; |
db9f0278 | 1637 | |
346598f1 | 1638 | immediate_quit = handling_signal = 0; |
d063129f | 1639 | abort_on_gc = 0; |
db9f0278 JB |
1640 | if (gc_in_progress || waiting_for_input) |
1641 | abort (); | |
1642 | ||
1ea9dec4 RS |
1643 | if (NILP (error_symbol)) |
1644 | real_error_symbol = Fcar (data); | |
1645 | else | |
1646 | real_error_symbol = error_symbol; | |
1647 | ||
26631f2b RS |
1648 | #if 0 /* rms: I don't know why this was here, |
1649 | but it is surely wrong for an error that is handled. */ | |
d148e14d | 1650 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
1651 | if (display_hourglass_p) |
1652 | cancel_hourglass (); | |
48f8dfa3 | 1653 | #endif |
177c0ea7 | 1654 | #endif |
48f8dfa3 | 1655 | |
61ede770 | 1656 | /* This hook is used by edebug. */ |
26631f2b RS |
1657 | if (! NILP (Vsignal_hook_function) |
1658 | && ! NILP (error_symbol)) | |
9f5903bb RS |
1659 | { |
1660 | /* Edebug takes care of restoring these variables when it exits. */ | |
1661 | if (lisp_eval_depth + 20 > max_lisp_eval_depth) | |
1662 | max_lisp_eval_depth = lisp_eval_depth + 20; | |
1663 | ||
1664 | if (SPECPDL_INDEX () + 40 > max_specpdl_size) | |
1665 | max_specpdl_size = SPECPDL_INDEX () + 40; | |
1666 | ||
1667 | call2 (Vsignal_hook_function, error_symbol, data); | |
1668 | } | |
61ede770 | 1669 | |
1ea9dec4 | 1670 | conditions = Fget (real_error_symbol, Qerror_conditions); |
db9f0278 | 1671 | |
a2ff3819 GM |
1672 | /* Remember from where signal was called. Skip over the frame for |
1673 | `signal' itself. If a frame for `error' follows, skip that, | |
26631f2b RS |
1674 | too. Don't do this when ERROR_SYMBOL is nil, because that |
1675 | is a memory-full error. */ | |
090a072f | 1676 | Vsignaling_function = Qnil; |
26631f2b | 1677 | if (backtrace_list && !NILP (error_symbol)) |
090a072f GM |
1678 | { |
1679 | bp = backtrace_list->next; | |
1680 | if (bp && bp->function && EQ (*bp->function, Qerror)) | |
1681 | bp = bp->next; | |
1682 | if (bp && bp->function) | |
1683 | Vsignaling_function = *bp->function; | |
1684 | } | |
a2ff3819 | 1685 | |
db9f0278 JB |
1686 | for (; handlerlist; handlerlist = handlerlist->next) |
1687 | { | |
1688 | register Lisp_Object clause; | |
177c0ea7 | 1689 | |
db9f0278 | 1690 | clause = find_handler_clause (handlerlist->handler, conditions, |
f01cbfdd | 1691 | error_symbol, data); |
db9f0278 | 1692 | |
db9f0278 | 1693 | if (EQ (clause, Qlambda)) |
82da7701 | 1694 | { |
690337b7 KH |
1695 | /* We can't return values to code which signaled an error, but we |
1696 | can continue code which has signaled a quit. */ | |
1ea9dec4 | 1697 | if (EQ (real_error_symbol, Qquit)) |
82da7701 JB |
1698 | return Qnil; |
1699 | else | |
d3e6f8be | 1700 | error ("Cannot return from the debugger in an error"); |
82da7701 | 1701 | } |
db9f0278 | 1702 | |
265a9e55 | 1703 | if (!NILP (clause)) |
db9f0278 | 1704 | { |
9d58218c | 1705 | Lisp_Object unwind_data; |
db9f0278 | 1706 | struct handler *h = handlerlist; |
9d58218c | 1707 | |
db9f0278 | 1708 | handlerlist = allhandlers; |
1ea9dec4 RS |
1709 | |
1710 | if (NILP (error_symbol)) | |
1711 | unwind_data = data; | |
9d58218c RS |
1712 | else |
1713 | unwind_data = Fcons (error_symbol, data); | |
1714 | h->chosen_clause = clause; | |
1715 | unwind_to_catch (h->tag, unwind_data); | |
db9f0278 JB |
1716 | } |
1717 | } | |
1718 | ||
1719 | handlerlist = allhandlers; | |
1720 | /* If no handler is present now, try to run the debugger, | |
1721 | and if that fails, throw to top level. */ | |
f01cbfdd | 1722 | find_handler_clause (Qerror, conditions, error_symbol, data); |
c11d3d17 RS |
1723 | if (catchlist != 0) |
1724 | Fthrow (Qtop_level, Qt); | |
1725 | ||
1ea9dec4 | 1726 | if (! NILP (error_symbol)) |
c11d3d17 RS |
1727 | data = Fcons (error_symbol, data); |
1728 | ||
1729 | string = Ferror_message_string (data); | |
d5db4077 | 1730 | fatal ("%s", SDATA (string), 0); |
db9f0278 JB |
1731 | } |
1732 | ||
734d55a2 KS |
1733 | /* Internal version of Fsignal that never returns. |
1734 | Used for anything but Qquit (which can return from Fsignal). */ | |
1735 | ||
1736 | void | |
d3da34e0 | 1737 | xsignal (Lisp_Object error_symbol, Lisp_Object data) |
734d55a2 KS |
1738 | { |
1739 | Fsignal (error_symbol, data); | |
1740 | abort (); | |
1741 | } | |
1742 | ||
1743 | /* Like xsignal, but takes 0, 1, 2, or 3 args instead of a list. */ | |
1744 | ||
1745 | void | |
d3da34e0 | 1746 | xsignal0 (Lisp_Object error_symbol) |
734d55a2 KS |
1747 | { |
1748 | xsignal (error_symbol, Qnil); | |
1749 | } | |
1750 | ||
1751 | void | |
d3da34e0 | 1752 | xsignal1 (Lisp_Object error_symbol, Lisp_Object arg) |
734d55a2 KS |
1753 | { |
1754 | xsignal (error_symbol, list1 (arg)); | |
1755 | } | |
1756 | ||
1757 | void | |
d3da34e0 | 1758 | xsignal2 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2) |
734d55a2 KS |
1759 | { |
1760 | xsignal (error_symbol, list2 (arg1, arg2)); | |
1761 | } | |
1762 | ||
1763 | void | |
d3da34e0 | 1764 | xsignal3 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
734d55a2 KS |
1765 | { |
1766 | xsignal (error_symbol, list3 (arg1, arg2, arg3)); | |
1767 | } | |
1768 | ||
1769 | /* Signal `error' with message S, and additional arg ARG. | |
1770 | If ARG is not a genuine list, make it a one-element list. */ | |
1771 | ||
1772 | void | |
a8fe7202 | 1773 | signal_error (const char *s, Lisp_Object arg) |
734d55a2 KS |
1774 | { |
1775 | Lisp_Object tortoise, hare; | |
1776 | ||
1777 | hare = tortoise = arg; | |
1778 | while (CONSP (hare)) | |
1779 | { | |
1780 | hare = XCDR (hare); | |
1781 | if (!CONSP (hare)) | |
1782 | break; | |
1783 | ||
1784 | hare = XCDR (hare); | |
1785 | tortoise = XCDR (tortoise); | |
1786 | ||
1787 | if (EQ (hare, tortoise)) | |
1788 | break; | |
1789 | } | |
1790 | ||
1791 | if (!NILP (hare)) | |
1792 | arg = Fcons (arg, Qnil); /* Make it a list. */ | |
1793 | ||
1794 | xsignal (Qerror, Fcons (build_string (s), arg)); | |
1795 | } | |
1796 | ||
1797 | ||
e0f24100 | 1798 | /* Return nonzero if LIST is a non-nil atom or |
128c0f66 RM |
1799 | a list containing one of CONDITIONS. */ |
1800 | ||
1801 | static int | |
d3da34e0 | 1802 | wants_debugger (Lisp_Object list, Lisp_Object conditions) |
128c0f66 | 1803 | { |
4de86b16 | 1804 | if (NILP (list)) |
128c0f66 RM |
1805 | return 0; |
1806 | if (! CONSP (list)) | |
1807 | return 1; | |
1808 | ||
ab67260b | 1809 | while (CONSP (conditions)) |
128c0f66 | 1810 | { |
ab67260b | 1811 | Lisp_Object this, tail; |
03699b14 KR |
1812 | this = XCAR (conditions); |
1813 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
1814 | if (EQ (XCAR (tail), this)) | |
128c0f66 | 1815 | return 1; |
03699b14 | 1816 | conditions = XCDR (conditions); |
128c0f66 | 1817 | } |
ab67260b | 1818 | return 0; |
128c0f66 RM |
1819 | } |
1820 | ||
fc950e09 KH |
1821 | /* Return 1 if an error with condition-symbols CONDITIONS, |
1822 | and described by SIGNAL-DATA, should skip the debugger | |
1b1acc13 | 1823 | according to debugger-ignored-errors. */ |
fc950e09 KH |
1824 | |
1825 | static int | |
d3da34e0 | 1826 | skip_debugger (Lisp_Object conditions, Lisp_Object data) |
fc950e09 KH |
1827 | { |
1828 | Lisp_Object tail; | |
1829 | int first_string = 1; | |
1830 | Lisp_Object error_message; | |
1831 | ||
17401c97 GM |
1832 | error_message = Qnil; |
1833 | for (tail = Vdebug_ignored_errors; CONSP (tail); tail = XCDR (tail)) | |
fc950e09 | 1834 | { |
03699b14 | 1835 | if (STRINGP (XCAR (tail))) |
fc950e09 KH |
1836 | { |
1837 | if (first_string) | |
1838 | { | |
1839 | error_message = Ferror_message_string (data); | |
1840 | first_string = 0; | |
1841 | } | |
177c0ea7 | 1842 | |
03699b14 | 1843 | if (fast_string_match (XCAR (tail), error_message) >= 0) |
fc950e09 KH |
1844 | return 1; |
1845 | } | |
1846 | else | |
1847 | { | |
1848 | Lisp_Object contail; | |
1849 | ||
17401c97 | 1850 | for (contail = conditions; CONSP (contail); contail = XCDR (contail)) |
03699b14 | 1851 | if (EQ (XCAR (tail), XCAR (contail))) |
fc950e09 KH |
1852 | return 1; |
1853 | } | |
1854 | } | |
1855 | ||
1856 | return 0; | |
1857 | } | |
1858 | ||
ddaa36e1 AS |
1859 | /* Call the debugger if calling it is currently enabled for CONDITIONS. |
1860 | SIG and DATA describe the signal, as in find_handler_clause. */ | |
1861 | ||
1862 | static int | |
d3da34e0 | 1863 | maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig, Lisp_Object data) |
ddaa36e1 AS |
1864 | { |
1865 | Lisp_Object combined_data; | |
1866 | ||
1867 | combined_data = Fcons (sig, data); | |
1868 | ||
1869 | if ( | |
1870 | /* Don't try to run the debugger with interrupts blocked. | |
1871 | The editing loop would return anyway. */ | |
1872 | ! INPUT_BLOCKED_P | |
1873 | /* Does user want to enter debugger for this kind of error? */ | |
1874 | && (EQ (sig, Qquit) | |
1875 | ? debug_on_quit | |
1876 | : wants_debugger (Vdebug_on_error, conditions)) | |
1877 | && ! skip_debugger (conditions, combined_data) | |
1878 | /* rms: what's this for? */ | |
1879 | && when_entered_debugger < num_nonmacro_input_events) | |
1880 | { | |
1881 | call_debugger (Fcons (Qerror, Fcons (combined_data, Qnil))); | |
1882 | return 1; | |
1883 | } | |
1884 | ||
1885 | return 0; | |
1886 | } | |
1887 | ||
128c0f66 | 1888 | /* Value of Qlambda means we have called debugger and user has continued. |
1ea9dec4 | 1889 | There are two ways to pass SIG and DATA: |
9b942ebd | 1890 | = SIG is the error symbol, and DATA is the rest of the data. |
1ea9dec4 | 1891 | = SIG is nil, and DATA is (SYMBOL . REST-OF-DATA). |
9b942ebd | 1892 | This is for memory-full errors only. |
1ea9dec4 | 1893 | |
9f5903bb RS |
1894 | We need to increase max_specpdl_size temporarily around |
1895 | anything we do that can push on the specpdl, so as not to get | |
1896 | a second error here in case we're handling specpdl overflow. */ | |
db9f0278 JB |
1897 | |
1898 | static Lisp_Object | |
d3da34e0 JB |
1899 | find_handler_clause (Lisp_Object handlers, Lisp_Object conditions, |
1900 | Lisp_Object sig, Lisp_Object data) | |
db9f0278 JB |
1901 | { |
1902 | register Lisp_Object h; | |
1903 | register Lisp_Object tem; | |
f01cbfdd RS |
1904 | int debugger_called = 0; |
1905 | int debugger_considered = 0; | |
db9f0278 | 1906 | |
f01cbfdd RS |
1907 | /* t is used by handlers for all conditions, set up by C code. */ |
1908 | if (EQ (handlers, Qt)) | |
db9f0278 | 1909 | return Qt; |
f01cbfdd RS |
1910 | |
1911 | /* Don't run the debugger for a memory-full error. | |
1912 | (There is no room in memory to do that!) */ | |
1913 | if (NILP (sig)) | |
1914 | debugger_considered = 1; | |
1915 | ||
61ede770 RS |
1916 | /* error is used similarly, but means print an error message |
1917 | and run the debugger if that is enabled. */ | |
1918 | if (EQ (handlers, Qerror) | |
57a6e758 RS |
1919 | || !NILP (Vdebug_on_signal)) /* This says call debugger even if |
1920 | there is a handler. */ | |
db9f0278 | 1921 | { |
f01cbfdd | 1922 | if (!NILP (sig) && wants_debugger (Vstack_trace_on_error, conditions)) |
88817f3b | 1923 | { |
48ce8ca7 | 1924 | max_lisp_eval_depth += 15; |
9f5903bb | 1925 | max_specpdl_size++; |
5b650faa SM |
1926 | if (noninteractive) |
1927 | Fbacktrace (); | |
1928 | else | |
1929 | internal_with_output_to_temp_buffer | |
1930 | ("*Backtrace*", | |
1931 | (Lisp_Object (*) (Lisp_Object)) Fbacktrace, | |
1932 | Qnil); | |
9f5903bb | 1933 | max_specpdl_size--; |
48ce8ca7 | 1934 | max_lisp_eval_depth -= 15; |
88817f3b | 1935 | } |
f01cbfdd RS |
1936 | |
1937 | if (!debugger_considered) | |
db9f0278 | 1938 | { |
f01cbfdd RS |
1939 | debugger_considered = 1; |
1940 | debugger_called = maybe_call_debugger (conditions, sig, data); | |
61ede770 | 1941 | } |
f01cbfdd | 1942 | |
61ede770 RS |
1943 | /* If there is no handler, return saying whether we ran the debugger. */ |
1944 | if (EQ (handlers, Qerror)) | |
1945 | { | |
1946 | if (debugger_called) | |
9f5903bb | 1947 | return Qlambda; |
61ede770 | 1948 | return Qt; |
db9f0278 | 1949 | } |
db9f0278 | 1950 | } |
f01cbfdd | 1951 | |
db9f0278 JB |
1952 | for (h = handlers; CONSP (h); h = Fcdr (h)) |
1953 | { | |
5f96776a RS |
1954 | Lisp_Object handler, condit; |
1955 | ||
1956 | handler = Fcar (h); | |
1957 | if (!CONSP (handler)) | |
db9f0278 | 1958 | continue; |
5f96776a RS |
1959 | condit = Fcar (handler); |
1960 | /* Handle a single condition name in handler HANDLER. */ | |
1961 | if (SYMBOLP (condit)) | |
1962 | { | |
1963 | tem = Fmemq (Fcar (handler), conditions); | |
1964 | if (!NILP (tem)) | |
1965 | return handler; | |
1966 | } | |
1967 | /* Handle a list of condition names in handler HANDLER. */ | |
1968 | else if (CONSP (condit)) | |
1969 | { | |
f01cbfdd RS |
1970 | Lisp_Object tail; |
1971 | for (tail = condit; CONSP (tail); tail = XCDR (tail)) | |
5f96776a | 1972 | { |
f01cbfdd | 1973 | tem = Fmemq (Fcar (tail), conditions); |
5f96776a | 1974 | if (!NILP (tem)) |
f01cbfdd RS |
1975 | { |
1976 | /* This handler is going to apply. | |
1977 | Does it allow the debugger to run first? */ | |
1978 | if (! debugger_considered && !NILP (Fmemq (Qdebug, condit))) | |
1979 | maybe_call_debugger (conditions, sig, data); | |
1980 | return handler; | |
1981 | } | |
5f96776a RS |
1982 | } |
1983 | } | |
db9f0278 | 1984 | } |
f01cbfdd | 1985 | |
db9f0278 JB |
1986 | return Qnil; |
1987 | } | |
1988 | ||
db9f0278 | 1989 | |
b3ffc17c | 1990 | /* dump an error message; called like vprintf */ |
db9f0278 | 1991 | void |
b3ffc17c | 1992 | verror (const char *m, va_list ap) |
db9f0278 JB |
1993 | { |
1994 | char buf[200]; | |
5816888b | 1995 | EMACS_INT size = 200; |
9125da08 RS |
1996 | int mlen; |
1997 | char *buffer = buf; | |
1998 | char *args[3]; | |
1999 | int allocated = 0; | |
2000 | Lisp_Object string; | |
2001 | ||
9125da08 | 2002 | mlen = strlen (m); |
db9f0278 JB |
2003 | |
2004 | while (1) | |
9125da08 | 2005 | { |
db063399 | 2006 | EMACS_INT used; |
6a8033e1 | 2007 | used = doprnt (buffer, size, m, m + mlen, ap); |
9125da08 RS |
2008 | if (used < size) |
2009 | break; | |
2010 | size *= 2; | |
2011 | if (allocated) | |
2012 | buffer = (char *) xrealloc (buffer, size); | |
5ece1728 RS |
2013 | else |
2014 | { | |
2015 | buffer = (char *) xmalloc (size); | |
2016 | allocated = 1; | |
2017 | } | |
9125da08 RS |
2018 | } |
2019 | ||
955f3ff9 | 2020 | string = build_string (buffer); |
9125da08 | 2021 | if (allocated) |
9ae6734f | 2022 | xfree (buffer); |
9125da08 | 2023 | |
734d55a2 | 2024 | xsignal1 (Qerror, string); |
db9f0278 | 2025 | } |
b3ffc17c DN |
2026 | |
2027 | ||
2028 | /* dump an error message; called like printf */ | |
2029 | ||
2030 | /* VARARGS 1 */ | |
2031 | void | |
2032 | error (const char *m, ...) | |
2033 | { | |
2034 | va_list ap; | |
2035 | va_start (ap, m); | |
2036 | verror (m, ap); | |
2037 | va_end (ap); | |
2038 | } | |
db9f0278 | 2039 | \f |
e72706be | 2040 | DEFUN ("commandp", Fcommandp, Scommandp, 1, 2, 0, |
9dbc9081 PJ |
2041 | doc: /* Non-nil if FUNCTION makes provisions for interactive calling. |
2042 | This means it contains a description for how to read arguments to give it. | |
2043 | The value is nil for an invalid function or a symbol with no function | |
2044 | definition. | |
2045 | ||
2046 | Interactively callable functions include strings and vectors (treated | |
2047 | as keyboard macros), lambda-expressions that contain a top-level call | |
2048 | to `interactive', autoload definitions made by `autoload' with non-nil | |
2049 | fourth argument, and some of the built-in functions of Lisp. | |
2050 | ||
e72706be RS |
2051 | Also, a symbol satisfies `commandp' if its function definition does so. |
2052 | ||
2053 | If the optional argument FOR-CALL-INTERACTIVELY is non-nil, | |
769b4fb2 | 2054 | then strings and vectors are not accepted. */) |
5842a27b | 2055 | (Lisp_Object function, Lisp_Object for_call_interactively) |
db9f0278 JB |
2056 | { |
2057 | register Lisp_Object fun; | |
2058 | register Lisp_Object funcar; | |
52b71f49 | 2059 | Lisp_Object if_prop = Qnil; |
db9f0278 JB |
2060 | |
2061 | fun = function; | |
2062 | ||
52b71f49 SM |
2063 | fun = indirect_function (fun); /* Check cycles. */ |
2064 | if (NILP (fun) || EQ (fun, Qunbound)) | |
ffd56f97 | 2065 | return Qnil; |
db9f0278 | 2066 | |
52b71f49 SM |
2067 | /* Check an `interactive-form' property if present, analogous to the |
2068 | function-documentation property. */ | |
2069 | fun = function; | |
2070 | while (SYMBOLP (fun)) | |
2071 | { | |
2b9aa051 | 2072 | Lisp_Object tmp = Fget (fun, Qinteractive_form); |
52b71f49 SM |
2073 | if (!NILP (tmp)) |
2074 | if_prop = Qt; | |
2075 | fun = Fsymbol_function (fun); | |
2076 | } | |
2077 | ||
db9f0278 JB |
2078 | /* Emacs primitives are interactive if their DEFUN specifies an |
2079 | interactive spec. */ | |
90165123 | 2080 | if (SUBRP (fun)) |
04724b69 | 2081 | return XSUBR (fun)->intspec ? Qt : if_prop; |
db9f0278 JB |
2082 | |
2083 | /* Bytecode objects are interactive if they are long enough to | |
2084 | have an element whose index is COMPILED_INTERACTIVE, which is | |
2085 | where the interactive spec is stored. */ | |
90165123 | 2086 | else if (COMPILEDP (fun)) |
845975f5 | 2087 | return ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE |
52b71f49 | 2088 | ? Qt : if_prop); |
db9f0278 JB |
2089 | |
2090 | /* Strings and vectors are keyboard macros. */ | |
52b71f49 | 2091 | if (STRINGP (fun) || VECTORP (fun)) |
6e33efc4 | 2092 | return (NILP (for_call_interactively) ? Qt : Qnil); |
db9f0278 JB |
2093 | |
2094 | /* Lists may represent commands. */ | |
2095 | if (!CONSP (fun)) | |
2096 | return Qnil; | |
ed16fb98 | 2097 | funcar = XCAR (fun); |
db9f0278 | 2098 | if (EQ (funcar, Qlambda)) |
52b71f49 | 2099 | return !NILP (Fassq (Qinteractive, Fcdr (XCDR (fun)))) ? Qt : if_prop; |
db9f0278 | 2100 | if (EQ (funcar, Qautoload)) |
52b71f49 | 2101 | return !NILP (Fcar (Fcdr (Fcdr (XCDR (fun))))) ? Qt : if_prop; |
db9f0278 JB |
2102 | else |
2103 | return Qnil; | |
2104 | } | |
2105 | ||
db9f0278 | 2106 | DEFUN ("autoload", Fautoload, Sautoload, 2, 5, 0, |
9dbc9081 PJ |
2107 | doc: /* Define FUNCTION to autoload from FILE. |
2108 | FUNCTION is a symbol; FILE is a file name string to pass to `load'. | |
2109 | Third arg DOCSTRING is documentation for the function. | |
2110 | Fourth arg INTERACTIVE if non-nil says function can be called interactively. | |
2111 | Fifth arg TYPE indicates the type of the object: | |
2112 | nil or omitted says FUNCTION is a function, | |
2113 | `keymap' says FUNCTION is really a keymap, and | |
2114 | `macro' or t says FUNCTION is really a macro. | |
2115 | Third through fifth args give info about the real definition. | |
2116 | They default to nil. | |
2117 | If FUNCTION is already defined other than as an autoload, | |
2118 | this does nothing and returns nil. */) | |
5842a27b | 2119 | (Lisp_Object function, Lisp_Object file, Lisp_Object docstring, Lisp_Object interactive, Lisp_Object type) |
db9f0278 | 2120 | { |
b7826503 PJ |
2121 | CHECK_SYMBOL (function); |
2122 | CHECK_STRING (file); | |
db9f0278 JB |
2123 | |
2124 | /* If function is defined and not as an autoload, don't override */ | |
2125 | if (!EQ (XSYMBOL (function)->function, Qunbound) | |
90165123 | 2126 | && !(CONSP (XSYMBOL (function)->function) |
03699b14 | 2127 | && EQ (XCAR (XSYMBOL (function)->function), Qautoload))) |
db9f0278 JB |
2128 | return Qnil; |
2129 | ||
7973e637 SM |
2130 | if (NILP (Vpurify_flag)) |
2131 | /* Only add entries after dumping, because the ones before are | |
2132 | not useful and else we get loads of them from the loaddefs.el. */ | |
2133 | LOADHIST_ATTACH (Fcons (Qautoload, function)); | |
905a9ed3 | 2134 | else |
a56eaaef | 2135 | /* We don't want the docstring in purespace (instead, |
d6d23852 SM |
2136 | Snarf-documentation should (hopefully) overwrite it). |
2137 | We used to use 0 here, but that leads to accidental sharing in | |
2138 | purecopy's hash-consing, so we use a (hopefully) unique integer | |
2139 | instead. */ | |
2140 | docstring = make_number (XHASH (function)); | |
a56eaaef DN |
2141 | return Ffset (function, |
2142 | Fpurecopy (list5 (Qautoload, file, docstring, | |
2143 | interactive, type))); | |
db9f0278 JB |
2144 | } |
2145 | ||
2146 | Lisp_Object | |
d3da34e0 | 2147 | un_autoload (Lisp_Object oldqueue) |
db9f0278 JB |
2148 | { |
2149 | register Lisp_Object queue, first, second; | |
2150 | ||
2151 | /* Queue to unwind is current value of Vautoload_queue. | |
2152 | oldqueue is the shadowed value to leave in Vautoload_queue. */ | |
2153 | queue = Vautoload_queue; | |
2154 | Vautoload_queue = oldqueue; | |
2155 | while (CONSP (queue)) | |
2156 | { | |
e509f168 | 2157 | first = XCAR (queue); |
db9f0278 JB |
2158 | second = Fcdr (first); |
2159 | first = Fcar (first); | |
47b82df9 RS |
2160 | if (EQ (first, make_number (0))) |
2161 | Vfeatures = second; | |
db9f0278 JB |
2162 | else |
2163 | Ffset (first, second); | |
e509f168 | 2164 | queue = XCDR (queue); |
db9f0278 JB |
2165 | } |
2166 | return Qnil; | |
2167 | } | |
2168 | ||
ca20916b RS |
2169 | /* Load an autoloaded function. |
2170 | FUNNAME is the symbol which is the function's name. | |
2171 | FUNDEF is the autoload definition (a list). */ | |
2172 | ||
045ba794 | 2173 | void |
d3da34e0 | 2174 | do_autoload (Lisp_Object fundef, Lisp_Object funname) |
db9f0278 | 2175 | { |
aed13378 | 2176 | int count = SPECPDL_INDEX (); |
d945992e | 2177 | Lisp_Object fun; |
ca20916b | 2178 | struct gcpro gcpro1, gcpro2, gcpro3; |
db9f0278 | 2179 | |
aea6173f RS |
2180 | /* This is to make sure that loadup.el gives a clear picture |
2181 | of what files are preloaded and when. */ | |
ab4db096 RS |
2182 | if (! NILP (Vpurify_flag)) |
2183 | error ("Attempt to autoload %s while preparing to dump", | |
d5db4077 | 2184 | SDATA (SYMBOL_NAME (funname))); |
ab4db096 | 2185 | |
db9f0278 | 2186 | fun = funname; |
b7826503 | 2187 | CHECK_SYMBOL (funname); |
ca20916b | 2188 | GCPRO3 (fun, funname, fundef); |
db9f0278 | 2189 | |
f87740dc | 2190 | /* Preserve the match data. */ |
89f2614d | 2191 | record_unwind_save_match_data (); |
177c0ea7 | 2192 | |
a04ee161 RS |
2193 | /* If autoloading gets an error (which includes the error of failing |
2194 | to define the function being called), we use Vautoload_queue | |
2195 | to undo function definitions and `provide' calls made by | |
2196 | the function. We do this in the specific case of autoloading | |
2197 | because autoloading is not an explicit request "load this file", | |
2198 | but rather a request to "call this function". | |
d3da34e0 | 2199 | |
a04ee161 | 2200 | The value saved here is to be restored into Vautoload_queue. */ |
db9f0278 JB |
2201 | record_unwind_protect (un_autoload, Vautoload_queue); |
2202 | Vautoload_queue = Qt; | |
7351b242 | 2203 | Fload (Fcar (Fcdr (fundef)), Qnil, Qt, Qnil, Qt); |
2a49b6e5 | 2204 | |
db9f0278 JB |
2205 | /* Once loading finishes, don't undo it. */ |
2206 | Vautoload_queue = Qt; | |
2207 | unbind_to (count, Qnil); | |
2208 | ||
a7f96a35 | 2209 | fun = Findirect_function (fun, Qnil); |
ffd56f97 | 2210 | |
76c2b0cc | 2211 | if (!NILP (Fequal (fun, fundef))) |
db9f0278 | 2212 | error ("Autoloading failed to define function %s", |
d5db4077 | 2213 | SDATA (SYMBOL_NAME (funname))); |
ca20916b | 2214 | UNGCPRO; |
db9f0278 | 2215 | } |
4c576a83 | 2216 | |
db9f0278 JB |
2217 | \f |
2218 | DEFUN ("eval", Feval, Seval, 1, 1, 0, | |
9dbc9081 | 2219 | doc: /* Evaluate FORM and return its value. */) |
5842a27b | 2220 | (Lisp_Object form) |
db9f0278 JB |
2221 | { |
2222 | Lisp_Object fun, val, original_fun, original_args; | |
2223 | Lisp_Object funcar; | |
2224 | struct backtrace backtrace; | |
2225 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2226 | ||
df470e3b | 2227 | if (handling_signal) |
48f8dfa3 | 2228 | abort (); |
177c0ea7 | 2229 | |
90165123 | 2230 | if (SYMBOLP (form)) |
2b9bde76 | 2231 | return Fsymbol_value (form); |
db9f0278 JB |
2232 | if (!CONSP (form)) |
2233 | return form; | |
2234 | ||
2235 | QUIT; | |
ee830945 RS |
2236 | if ((consing_since_gc > gc_cons_threshold |
2237 | && consing_since_gc > gc_relative_threshold) | |
2238 | || | |
2239 | (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold)) | |
db9f0278 JB |
2240 | { |
2241 | GCPRO1 (form); | |
2242 | Fgarbage_collect (); | |
2243 | UNGCPRO; | |
2244 | } | |
2245 | ||
2246 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2247 | { | |
2248 | if (max_lisp_eval_depth < 100) | |
2249 | max_lisp_eval_depth = 100; | |
2250 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2251 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2252 | } |
2253 | ||
2254 | original_fun = Fcar (form); | |
2255 | original_args = Fcdr (form); | |
2256 | ||
2257 | backtrace.next = backtrace_list; | |
2258 | backtrace_list = &backtrace; | |
2259 | backtrace.function = &original_fun; /* This also protects them from gc */ | |
2260 | backtrace.args = &original_args; | |
2261 | backtrace.nargs = UNEVALLED; | |
2262 | backtrace.evalargs = 1; | |
2263 | backtrace.debug_on_exit = 0; | |
2264 | ||
2265 | if (debug_on_next_call) | |
2266 | do_debug_on_call (Qt); | |
2267 | ||
2268 | /* At this point, only original_fun and original_args | |
2269 | have values that will be used below */ | |
2270 | retry: | |
8788120f KS |
2271 | |
2272 | /* Optimize for no indirection. */ | |
2273 | fun = original_fun; | |
2274 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2275 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2276 | fun = indirect_function (fun); | |
db9f0278 | 2277 | |
90165123 | 2278 | if (SUBRP (fun)) |
db9f0278 JB |
2279 | { |
2280 | Lisp_Object numargs; | |
166c822d | 2281 | Lisp_Object argvals[8]; |
db9f0278 JB |
2282 | Lisp_Object args_left; |
2283 | register int i, maxargs; | |
2284 | ||
2285 | args_left = original_args; | |
2286 | numargs = Flength (args_left); | |
2287 | ||
c1788fbc RS |
2288 | CHECK_CONS_LIST (); |
2289 | ||
db9f0278 JB |
2290 | if (XINT (numargs) < XSUBR (fun)->min_args || |
2291 | (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < XINT (numargs))) | |
734d55a2 | 2292 | xsignal2 (Qwrong_number_of_arguments, original_fun, numargs); |
db9f0278 | 2293 | |
ef1b0ba7 | 2294 | else if (XSUBR (fun)->max_args == UNEVALLED) |
db9f0278 JB |
2295 | { |
2296 | backtrace.evalargs = 0; | |
d5273788 | 2297 | val = (XSUBR (fun)->function.aUNEVALLED) (args_left); |
db9f0278 | 2298 | } |
ef1b0ba7 | 2299 | else if (XSUBR (fun)->max_args == MANY) |
db9f0278 JB |
2300 | { |
2301 | /* Pass a vector of evaluated arguments */ | |
2302 | Lisp_Object *vals; | |
2303 | register int argnum = 0; | |
3a7a9129 | 2304 | USE_SAFE_ALLOCA; |
db9f0278 | 2305 | |
b72e0717 | 2306 | SAFE_ALLOCA_LISP (vals, XINT (numargs)); |
db9f0278 JB |
2307 | |
2308 | GCPRO3 (args_left, fun, fun); | |
2309 | gcpro3.var = vals; | |
2310 | gcpro3.nvars = 0; | |
2311 | ||
265a9e55 | 2312 | while (!NILP (args_left)) |
db9f0278 JB |
2313 | { |
2314 | vals[argnum++] = Feval (Fcar (args_left)); | |
2315 | args_left = Fcdr (args_left); | |
2316 | gcpro3.nvars = argnum; | |
2317 | } | |
db9f0278 JB |
2318 | |
2319 | backtrace.args = vals; | |
2320 | backtrace.nargs = XINT (numargs); | |
2321 | ||
d5273788 | 2322 | val = (XSUBR (fun)->function.aMANY) (XINT (numargs), vals); |
a6e3fa71 | 2323 | UNGCPRO; |
3a7a9129 | 2324 | SAFE_FREE (); |
db9f0278 | 2325 | } |
ef1b0ba7 | 2326 | else |
db9f0278 | 2327 | { |
ef1b0ba7 SM |
2328 | GCPRO3 (args_left, fun, fun); |
2329 | gcpro3.var = argvals; | |
2330 | gcpro3.nvars = 0; | |
db9f0278 | 2331 | |
ef1b0ba7 SM |
2332 | maxargs = XSUBR (fun)->max_args; |
2333 | for (i = 0; i < maxargs; args_left = Fcdr (args_left)) | |
2334 | { | |
2335 | argvals[i] = Feval (Fcar (args_left)); | |
2336 | gcpro3.nvars = ++i; | |
2337 | } | |
db9f0278 | 2338 | |
ef1b0ba7 | 2339 | UNGCPRO; |
db9f0278 | 2340 | |
ef1b0ba7 SM |
2341 | backtrace.args = argvals; |
2342 | backtrace.nargs = XINT (numargs); | |
2343 | ||
2344 | switch (i) | |
2345 | { | |
2346 | case 0: | |
2347 | val = (XSUBR (fun)->function.a0 ()); | |
2348 | break; | |
2349 | case 1: | |
2350 | val = (XSUBR (fun)->function.a1 (argvals[0])); | |
2351 | break; | |
2352 | case 2: | |
2353 | val = (XSUBR (fun)->function.a2 (argvals[0], argvals[1])); | |
2354 | break; | |
2355 | case 3: | |
2356 | val = (XSUBR (fun)->function.a3 | |
2357 | (argvals[0], argvals[1], argvals[2])); | |
2358 | break; | |
2359 | case 4: | |
2360 | val = (XSUBR (fun)->function.a4 | |
2361 | (argvals[0], argvals[1], argvals[2], argvals[3])); | |
2362 | break; | |
2363 | case 5: | |
2364 | val = (XSUBR (fun)->function.a5 | |
2365 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2366 | argvals[4])); | |
2367 | break; | |
2368 | case 6: | |
2369 | val = (XSUBR (fun)->function.a6 | |
2370 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2371 | argvals[4], argvals[5])); | |
2372 | break; | |
2373 | case 7: | |
2374 | val = (XSUBR (fun)->function.a7 | |
2375 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2376 | argvals[4], argvals[5], argvals[6])); | |
2377 | break; | |
2378 | ||
2379 | case 8: | |
2380 | val = (XSUBR (fun)->function.a8 | |
2381 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2382 | argvals[4], argvals[5], argvals[6], argvals[7])); | |
2383 | break; | |
2384 | ||
2385 | default: | |
2386 | /* Someone has created a subr that takes more arguments than | |
2387 | is supported by this code. We need to either rewrite the | |
2388 | subr to use a different argument protocol, or add more | |
2389 | cases to this switch. */ | |
2390 | abort (); | |
2391 | } | |
db9f0278 JB |
2392 | } |
2393 | } | |
ef1b0ba7 | 2394 | else if (COMPILEDP (fun)) |
db9f0278 JB |
2395 | val = apply_lambda (fun, original_args, 1); |
2396 | else | |
2397 | { | |
8788120f | 2398 | if (EQ (fun, Qunbound)) |
734d55a2 | 2399 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 2400 | if (!CONSP (fun)) |
734d55a2 KS |
2401 | xsignal1 (Qinvalid_function, original_fun); |
2402 | funcar = XCAR (fun); | |
90165123 | 2403 | if (!SYMBOLP (funcar)) |
734d55a2 | 2404 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
2405 | if (EQ (funcar, Qautoload)) |
2406 | { | |
2407 | do_autoload (fun, original_fun); | |
2408 | goto retry; | |
2409 | } | |
2410 | if (EQ (funcar, Qmacro)) | |
2411 | val = Feval (apply1 (Fcdr (fun), original_args)); | |
2412 | else if (EQ (funcar, Qlambda)) | |
2413 | val = apply_lambda (fun, original_args, 1); | |
db9f0278 | 2414 | else |
734d55a2 | 2415 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2416 | } |
c1788fbc RS |
2417 | CHECK_CONS_LIST (); |
2418 | ||
db9f0278 JB |
2419 | lisp_eval_depth--; |
2420 | if (backtrace.debug_on_exit) | |
2421 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2422 | backtrace_list = backtrace.next; | |
824eb35e | 2423 | |
db9f0278 JB |
2424 | return val; |
2425 | } | |
2426 | \f | |
2427 | DEFUN ("apply", Fapply, Sapply, 2, MANY, 0, | |
9dbc9081 PJ |
2428 | doc: /* Call FUNCTION with our remaining args, using our last arg as list of args. |
2429 | Then return the value FUNCTION returns. | |
2430 | Thus, (apply '+ 1 2 '(3 4)) returns 10. | |
2431 | usage: (apply FUNCTION &rest ARGUMENTS) */) | |
5842a27b | 2432 | (int nargs, Lisp_Object *args) |
db9f0278 JB |
2433 | { |
2434 | register int i, numargs; | |
2435 | register Lisp_Object spread_arg; | |
2436 | register Lisp_Object *funcall_args; | |
3a7a9129 | 2437 | Lisp_Object fun, retval; |
96d44c64 | 2438 | struct gcpro gcpro1; |
3a7a9129 | 2439 | USE_SAFE_ALLOCA; |
db9f0278 JB |
2440 | |
2441 | fun = args [0]; | |
2442 | funcall_args = 0; | |
2443 | spread_arg = args [nargs - 1]; | |
b7826503 | 2444 | CHECK_LIST (spread_arg); |
177c0ea7 | 2445 | |
db9f0278 JB |
2446 | numargs = XINT (Flength (spread_arg)); |
2447 | ||
2448 | if (numargs == 0) | |
2449 | return Ffuncall (nargs - 1, args); | |
2450 | else if (numargs == 1) | |
2451 | { | |
03699b14 | 2452 | args [nargs - 1] = XCAR (spread_arg); |
db9f0278 JB |
2453 | return Ffuncall (nargs, args); |
2454 | } | |
2455 | ||
a6e3fa71 | 2456 | numargs += nargs - 2; |
db9f0278 | 2457 | |
8788120f KS |
2458 | /* Optimize for no indirection. */ |
2459 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2460 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2461 | fun = indirect_function (fun); | |
ffd56f97 | 2462 | if (EQ (fun, Qunbound)) |
db9f0278 | 2463 | { |
ffd56f97 JB |
2464 | /* Let funcall get the error */ |
2465 | fun = args[0]; | |
2466 | goto funcall; | |
db9f0278 JB |
2467 | } |
2468 | ||
90165123 | 2469 | if (SUBRP (fun)) |
db9f0278 JB |
2470 | { |
2471 | if (numargs < XSUBR (fun)->min_args | |
2472 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) | |
2473 | goto funcall; /* Let funcall get the error */ | |
2474 | else if (XSUBR (fun)->max_args > numargs) | |
2475 | { | |
2476 | /* Avoid making funcall cons up a yet another new vector of arguments | |
2477 | by explicitly supplying nil's for optional values */ | |
b72e0717 | 2478 | SAFE_ALLOCA_LISP (funcall_args, 1 + XSUBR (fun)->max_args); |
db9f0278 JB |
2479 | for (i = numargs; i < XSUBR (fun)->max_args;) |
2480 | funcall_args[++i] = Qnil; | |
96d44c64 SM |
2481 | GCPRO1 (*funcall_args); |
2482 | gcpro1.nvars = 1 + XSUBR (fun)->max_args; | |
db9f0278 JB |
2483 | } |
2484 | } | |
2485 | funcall: | |
2486 | /* We add 1 to numargs because funcall_args includes the | |
2487 | function itself as well as its arguments. */ | |
2488 | if (!funcall_args) | |
a6e3fa71 | 2489 | { |
b72e0717 | 2490 | SAFE_ALLOCA_LISP (funcall_args, 1 + numargs); |
96d44c64 SM |
2491 | GCPRO1 (*funcall_args); |
2492 | gcpro1.nvars = 1 + numargs; | |
a6e3fa71 JB |
2493 | } |
2494 | ||
72af86bd | 2495 | memcpy (funcall_args, args, nargs * sizeof (Lisp_Object)); |
db9f0278 JB |
2496 | /* Spread the last arg we got. Its first element goes in |
2497 | the slot that it used to occupy, hence this value of I. */ | |
2498 | i = nargs - 1; | |
265a9e55 | 2499 | while (!NILP (spread_arg)) |
db9f0278 | 2500 | { |
03699b14 KR |
2501 | funcall_args [i++] = XCAR (spread_arg); |
2502 | spread_arg = XCDR (spread_arg); | |
db9f0278 | 2503 | } |
a6e3fa71 | 2504 | |
96d44c64 | 2505 | /* By convention, the caller needs to gcpro Ffuncall's args. */ |
3a7a9129 CY |
2506 | retval = Ffuncall (gcpro1.nvars, funcall_args); |
2507 | UNGCPRO; | |
2508 | SAFE_FREE (); | |
2509 | ||
2510 | return retval; | |
db9f0278 JB |
2511 | } |
2512 | \f | |
ff936e53 SM |
2513 | /* Run hook variables in various ways. */ |
2514 | ||
2515 | enum run_hooks_condition {to_completion, until_success, until_failure}; | |
f57e2426 | 2516 | static Lisp_Object run_hook_with_args (int, Lisp_Object *, |
bb8e180f | 2517 | enum run_hooks_condition); |
ff936e53 | 2518 | |
8b5176cd | 2519 | DEFUN ("run-hooks", Frun_hooks, Srun_hooks, 0, MANY, 0, |
9f685258 | 2520 | doc: /* Run each hook in HOOKS. |
9dbc9081 PJ |
2521 | Each argument should be a symbol, a hook variable. |
2522 | These symbols are processed in the order specified. | |
2523 | If a hook symbol has a non-nil value, that value may be a function | |
2524 | or a list of functions to be called to run the hook. | |
2525 | If the value is a function, it is called with no arguments. | |
2526 | If it is a list, the elements are called, in order, with no arguments. | |
2527 | ||
9f685258 LK |
2528 | Major modes should not use this function directly to run their mode |
2529 | hook; they should use `run-mode-hooks' instead. | |
2530 | ||
72e85d5d RS |
2531 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2532 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2533 | usage: (run-hooks &rest HOOKS) */) |
5842a27b | 2534 | (int nargs, Lisp_Object *args) |
ff936e53 SM |
2535 | { |
2536 | Lisp_Object hook[1]; | |
2537 | register int i; | |
2538 | ||
2539 | for (i = 0; i < nargs; i++) | |
2540 | { | |
2541 | hook[0] = args[i]; | |
2542 | run_hook_with_args (1, hook, to_completion); | |
2543 | } | |
2544 | ||
2545 | return Qnil; | |
2546 | } | |
177c0ea7 | 2547 | |
a0d76c27 | 2548 | DEFUN ("run-hook-with-args", Frun_hook_with_args, |
9dbc9081 PJ |
2549 | Srun_hook_with_args, 1, MANY, 0, |
2550 | doc: /* Run HOOK with the specified arguments ARGS. | |
2551 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil | |
2552 | value, that value may be a function or a list of functions to be | |
2553 | called to run the hook. If the value is a function, it is called with | |
2554 | the given arguments and its return value is returned. If it is a list | |
2555 | of functions, those functions are called, in order, | |
2556 | with the given arguments ARGS. | |
d5e2c90c | 2557 | It is best not to depend on the value returned by `run-hook-with-args', |
9dbc9081 PJ |
2558 | as that may change. |
2559 | ||
72e85d5d RS |
2560 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2561 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2562 | usage: (run-hook-with-args HOOK &rest ARGS) */) |
5842a27b | 2563 | (int nargs, Lisp_Object *args) |
ff936e53 SM |
2564 | { |
2565 | return run_hook_with_args (nargs, args, to_completion); | |
2566 | } | |
2567 | ||
a0d76c27 | 2568 | DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success, |
9dbc9081 PJ |
2569 | Srun_hook_with_args_until_success, 1, MANY, 0, |
2570 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2571 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2572 | value, that value may be a function or a list of functions to be | |
2573 | called to run the hook. If the value is a function, it is called with | |
2574 | the given arguments and its return value is returned. | |
2575 | If it is a list of functions, those functions are called, in order, | |
2576 | with the given arguments ARGS, until one of them | |
9dbc9081 | 2577 | returns a non-nil value. Then we return that value. |
d5e2c90c | 2578 | However, if they all return nil, we return nil. |
9dbc9081 | 2579 | |
72e85d5d RS |
2580 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2581 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2582 | usage: (run-hook-with-args-until-success HOOK &rest ARGS) */) |
5842a27b | 2583 | (int nargs, Lisp_Object *args) |
b0b667cb | 2584 | { |
ff936e53 SM |
2585 | return run_hook_with_args (nargs, args, until_success); |
2586 | } | |
2587 | ||
a0d76c27 | 2588 | DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure, |
9dbc9081 PJ |
2589 | Srun_hook_with_args_until_failure, 1, MANY, 0, |
2590 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2591 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2592 | value, that value may be a function or a list of functions to be | |
2593 | called to run the hook. If the value is a function, it is called with | |
2594 | the given arguments and its return value is returned. | |
2595 | If it is a list of functions, those functions are called, in order, | |
2596 | with the given arguments ARGS, until one of them returns nil. | |
2597 | Then we return nil. However, if they all return non-nil, we return non-nil. | |
9dbc9081 | 2598 | |
72e85d5d RS |
2599 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2600 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2601 | usage: (run-hook-with-args-until-failure HOOK &rest ARGS) */) |
5842a27b | 2602 | (int nargs, Lisp_Object *args) |
ff936e53 SM |
2603 | { |
2604 | return run_hook_with_args (nargs, args, until_failure); | |
2605 | } | |
2606 | ||
c933ea05 RS |
2607 | /* ARGS[0] should be a hook symbol. |
2608 | Call each of the functions in the hook value, passing each of them | |
2609 | as arguments all the rest of ARGS (all NARGS - 1 elements). | |
2610 | COND specifies a condition to test after each call | |
2611 | to decide whether to stop. | |
2612 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2613 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2614 | ||
2901f1d1 | 2615 | static Lisp_Object |
d3da34e0 | 2616 | run_hook_with_args (int nargs, Lisp_Object *args, enum run_hooks_condition cond) |
ff936e53 SM |
2617 | { |
2618 | Lisp_Object sym, val, ret; | |
fada05d6 | 2619 | struct gcpro gcpro1, gcpro2, gcpro3; |
b0b667cb | 2620 | |
f029ca5f RS |
2621 | /* If we are dying or still initializing, |
2622 | don't do anything--it would probably crash if we tried. */ | |
2623 | if (NILP (Vrun_hooks)) | |
caff32a7 | 2624 | return Qnil; |
f029ca5f | 2625 | |
b0b667cb | 2626 | sym = args[0]; |
aa681b51 | 2627 | val = find_symbol_value (sym); |
ff936e53 SM |
2628 | ret = (cond == until_failure ? Qt : Qnil); |
2629 | ||
b0b667cb | 2630 | if (EQ (val, Qunbound) || NILP (val)) |
ff936e53 | 2631 | return ret; |
03699b14 | 2632 | else if (!CONSP (val) || EQ (XCAR (val), Qlambda)) |
b0b667cb KH |
2633 | { |
2634 | args[0] = val; | |
2635 | return Ffuncall (nargs, args); | |
2636 | } | |
2637 | else | |
2638 | { | |
8932b1c2 | 2639 | Lisp_Object globals = Qnil; |
fada05d6 | 2640 | GCPRO3 (sym, val, globals); |
cb9d21f8 | 2641 | |
ff936e53 SM |
2642 | for (; |
2643 | CONSP (val) && ((cond == to_completion) | |
2644 | || (cond == until_success ? NILP (ret) | |
2645 | : !NILP (ret))); | |
03699b14 | 2646 | val = XCDR (val)) |
b0b667cb | 2647 | { |
03699b14 | 2648 | if (EQ (XCAR (val), Qt)) |
b0b667cb KH |
2649 | { |
2650 | /* t indicates this hook has a local binding; | |
2651 | it means to run the global binding too. */ | |
8932b1c2 CY |
2652 | globals = Fdefault_value (sym); |
2653 | if (NILP (globals)) continue; | |
b0b667cb | 2654 | |
8932b1c2 | 2655 | if (!CONSP (globals) || EQ (XCAR (globals), Qlambda)) |
b0b667cb | 2656 | { |
8932b1c2 CY |
2657 | args[0] = globals; |
2658 | ret = Ffuncall (nargs, args); | |
2659 | } | |
2660 | else | |
2661 | { | |
2662 | for (; | |
2663 | CONSP (globals) && ((cond == to_completion) | |
2664 | || (cond == until_success ? NILP (ret) | |
2665 | : !NILP (ret))); | |
2666 | globals = XCDR (globals)) | |
2667 | { | |
2668 | args[0] = XCAR (globals); | |
2669 | /* In a global value, t should not occur. If it does, we | |
2670 | must ignore it to avoid an endless loop. */ | |
2671 | if (!EQ (args[0], Qt)) | |
2672 | ret = Ffuncall (nargs, args); | |
2673 | } | |
b0b667cb KH |
2674 | } |
2675 | } | |
2676 | else | |
2677 | { | |
03699b14 | 2678 | args[0] = XCAR (val); |
ff936e53 | 2679 | ret = Ffuncall (nargs, args); |
b0b667cb KH |
2680 | } |
2681 | } | |
cb9d21f8 RS |
2682 | |
2683 | UNGCPRO; | |
ff936e53 | 2684 | return ret; |
b0b667cb KH |
2685 | } |
2686 | } | |
c933ea05 RS |
2687 | |
2688 | /* Run a hook symbol ARGS[0], but use FUNLIST instead of the actual | |
2689 | present value of that symbol. | |
2690 | Call each element of FUNLIST, | |
2691 | passing each of them the rest of ARGS. | |
2692 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2693 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2694 | ||
2695 | Lisp_Object | |
d3da34e0 | 2696 | run_hook_list_with_args (Lisp_Object funlist, int nargs, Lisp_Object *args) |
c933ea05 RS |
2697 | { |
2698 | Lisp_Object sym; | |
2699 | Lisp_Object val; | |
fada05d6 KH |
2700 | Lisp_Object globals; |
2701 | struct gcpro gcpro1, gcpro2, gcpro3; | |
c933ea05 RS |
2702 | |
2703 | sym = args[0]; | |
fada05d6 KH |
2704 | globals = Qnil; |
2705 | GCPRO3 (sym, val, globals); | |
c933ea05 | 2706 | |
03699b14 | 2707 | for (val = funlist; CONSP (val); val = XCDR (val)) |
c933ea05 | 2708 | { |
03699b14 | 2709 | if (EQ (XCAR (val), Qt)) |
c933ea05 RS |
2710 | { |
2711 | /* t indicates this hook has a local binding; | |
2712 | it means to run the global binding too. */ | |
c933ea05 RS |
2713 | |
2714 | for (globals = Fdefault_value (sym); | |
2715 | CONSP (globals); | |
03699b14 | 2716 | globals = XCDR (globals)) |
c933ea05 | 2717 | { |
03699b14 | 2718 | args[0] = XCAR (globals); |
77d92e05 RS |
2719 | /* In a global value, t should not occur. If it does, we |
2720 | must ignore it to avoid an endless loop. */ | |
2721 | if (!EQ (args[0], Qt)) | |
2722 | Ffuncall (nargs, args); | |
c933ea05 RS |
2723 | } |
2724 | } | |
2725 | else | |
2726 | { | |
03699b14 | 2727 | args[0] = XCAR (val); |
c933ea05 RS |
2728 | Ffuncall (nargs, args); |
2729 | } | |
2730 | } | |
2731 | UNGCPRO; | |
2732 | return Qnil; | |
2733 | } | |
7d48558f RS |
2734 | |
2735 | /* Run the hook HOOK, giving each function the two args ARG1 and ARG2. */ | |
2736 | ||
2737 | void | |
d3da34e0 | 2738 | run_hook_with_args_2 (Lisp_Object hook, Lisp_Object arg1, Lisp_Object arg2) |
7d48558f RS |
2739 | { |
2740 | Lisp_Object temp[3]; | |
2741 | temp[0] = hook; | |
2742 | temp[1] = arg1; | |
2743 | temp[2] = arg2; | |
2744 | ||
2745 | Frun_hook_with_args (3, temp); | |
2746 | } | |
ff936e53 | 2747 | \f |
db9f0278 JB |
2748 | /* Apply fn to arg */ |
2749 | Lisp_Object | |
d3da34e0 | 2750 | apply1 (Lisp_Object fn, Lisp_Object arg) |
db9f0278 | 2751 | { |
a6e3fa71 JB |
2752 | struct gcpro gcpro1; |
2753 | ||
2754 | GCPRO1 (fn); | |
265a9e55 | 2755 | if (NILP (arg)) |
a6e3fa71 JB |
2756 | RETURN_UNGCPRO (Ffuncall (1, &fn)); |
2757 | gcpro1.nvars = 2; | |
db9f0278 JB |
2758 | { |
2759 | Lisp_Object args[2]; | |
2760 | args[0] = fn; | |
2761 | args[1] = arg; | |
a6e3fa71 JB |
2762 | gcpro1.var = args; |
2763 | RETURN_UNGCPRO (Fapply (2, args)); | |
db9f0278 | 2764 | } |
db9f0278 JB |
2765 | } |
2766 | ||
2767 | /* Call function fn on no arguments */ | |
2768 | Lisp_Object | |
d3da34e0 | 2769 | call0 (Lisp_Object fn) |
db9f0278 | 2770 | { |
a6e3fa71 JB |
2771 | struct gcpro gcpro1; |
2772 | ||
2773 | GCPRO1 (fn); | |
2774 | RETURN_UNGCPRO (Ffuncall (1, &fn)); | |
db9f0278 JB |
2775 | } |
2776 | ||
15285f9f | 2777 | /* Call function fn with 1 argument arg1 */ |
db9f0278 JB |
2778 | /* ARGSUSED */ |
2779 | Lisp_Object | |
d3da34e0 | 2780 | call1 (Lisp_Object fn, Lisp_Object arg1) |
db9f0278 | 2781 | { |
a6e3fa71 | 2782 | struct gcpro gcpro1; |
177c0ea7 | 2783 | Lisp_Object args[2]; |
a6e3fa71 | 2784 | |
db9f0278 | 2785 | args[0] = fn; |
15285f9f | 2786 | args[1] = arg1; |
a6e3fa71 JB |
2787 | GCPRO1 (args[0]); |
2788 | gcpro1.nvars = 2; | |
2789 | RETURN_UNGCPRO (Ffuncall (2, args)); | |
db9f0278 JB |
2790 | } |
2791 | ||
15285f9f | 2792 | /* Call function fn with 2 arguments arg1, arg2 */ |
db9f0278 JB |
2793 | /* ARGSUSED */ |
2794 | Lisp_Object | |
d3da34e0 | 2795 | call2 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2) |
db9f0278 | 2796 | { |
a6e3fa71 | 2797 | struct gcpro gcpro1; |
db9f0278 JB |
2798 | Lisp_Object args[3]; |
2799 | args[0] = fn; | |
15285f9f RS |
2800 | args[1] = arg1; |
2801 | args[2] = arg2; | |
a6e3fa71 JB |
2802 | GCPRO1 (args[0]); |
2803 | gcpro1.nvars = 3; | |
2804 | RETURN_UNGCPRO (Ffuncall (3, args)); | |
db9f0278 JB |
2805 | } |
2806 | ||
15285f9f | 2807 | /* Call function fn with 3 arguments arg1, arg2, arg3 */ |
db9f0278 JB |
2808 | /* ARGSUSED */ |
2809 | Lisp_Object | |
d3da34e0 | 2810 | call3 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
db9f0278 | 2811 | { |
a6e3fa71 | 2812 | struct gcpro gcpro1; |
db9f0278 JB |
2813 | Lisp_Object args[4]; |
2814 | args[0] = fn; | |
15285f9f RS |
2815 | args[1] = arg1; |
2816 | args[2] = arg2; | |
2817 | args[3] = arg3; | |
a6e3fa71 JB |
2818 | GCPRO1 (args[0]); |
2819 | gcpro1.nvars = 4; | |
2820 | RETURN_UNGCPRO (Ffuncall (4, args)); | |
db9f0278 JB |
2821 | } |
2822 | ||
15285f9f | 2823 | /* Call function fn with 4 arguments arg1, arg2, arg3, arg4 */ |
a5a44b91 JB |
2824 | /* ARGSUSED */ |
2825 | Lisp_Object | |
d3da34e0 JB |
2826 | call4 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2827 | Lisp_Object arg4) | |
a5a44b91 JB |
2828 | { |
2829 | struct gcpro gcpro1; | |
a5a44b91 JB |
2830 | Lisp_Object args[5]; |
2831 | args[0] = fn; | |
15285f9f RS |
2832 | args[1] = arg1; |
2833 | args[2] = arg2; | |
2834 | args[3] = arg3; | |
2835 | args[4] = arg4; | |
a5a44b91 JB |
2836 | GCPRO1 (args[0]); |
2837 | gcpro1.nvars = 5; | |
2838 | RETURN_UNGCPRO (Ffuncall (5, args)); | |
a5a44b91 JB |
2839 | } |
2840 | ||
15285f9f RS |
2841 | /* Call function fn with 5 arguments arg1, arg2, arg3, arg4, arg5 */ |
2842 | /* ARGSUSED */ | |
2843 | Lisp_Object | |
d3da34e0 JB |
2844 | call5 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2845 | Lisp_Object arg4, Lisp_Object arg5) | |
15285f9f RS |
2846 | { |
2847 | struct gcpro gcpro1; | |
15285f9f RS |
2848 | Lisp_Object args[6]; |
2849 | args[0] = fn; | |
2850 | args[1] = arg1; | |
2851 | args[2] = arg2; | |
2852 | args[3] = arg3; | |
2853 | args[4] = arg4; | |
2854 | args[5] = arg5; | |
2855 | GCPRO1 (args[0]); | |
2856 | gcpro1.nvars = 6; | |
2857 | RETURN_UNGCPRO (Ffuncall (6, args)); | |
15285f9f RS |
2858 | } |
2859 | ||
2860 | /* Call function fn with 6 arguments arg1, arg2, arg3, arg4, arg5, arg6 */ | |
2861 | /* ARGSUSED */ | |
2862 | Lisp_Object | |
d3da34e0 JB |
2863 | call6 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2864 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6) | |
15285f9f RS |
2865 | { |
2866 | struct gcpro gcpro1; | |
15285f9f RS |
2867 | Lisp_Object args[7]; |
2868 | args[0] = fn; | |
2869 | args[1] = arg1; | |
2870 | args[2] = arg2; | |
2871 | args[3] = arg3; | |
2872 | args[4] = arg4; | |
2873 | args[5] = arg5; | |
2874 | args[6] = arg6; | |
2875 | GCPRO1 (args[0]); | |
2876 | gcpro1.nvars = 7; | |
2877 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
15285f9f RS |
2878 | } |
2879 | ||
574c05e2 KK |
2880 | /* Call function fn with 7 arguments arg1, arg2, arg3, arg4, arg5, arg6, arg7 */ |
2881 | /* ARGSUSED */ | |
2882 | Lisp_Object | |
d3da34e0 JB |
2883 | call7 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2884 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6, Lisp_Object arg7) | |
574c05e2 KK |
2885 | { |
2886 | struct gcpro gcpro1; | |
574c05e2 KK |
2887 | Lisp_Object args[8]; |
2888 | args[0] = fn; | |
2889 | args[1] = arg1; | |
2890 | args[2] = arg2; | |
2891 | args[3] = arg3; | |
2892 | args[4] = arg4; | |
2893 | args[5] = arg5; | |
2894 | args[6] = arg6; | |
2895 | args[7] = arg7; | |
2896 | GCPRO1 (args[0]); | |
2897 | gcpro1.nvars = 8; | |
2898 | RETURN_UNGCPRO (Ffuncall (8, args)); | |
574c05e2 KK |
2899 | } |
2900 | ||
6c2ef893 RS |
2901 | /* The caller should GCPRO all the elements of ARGS. */ |
2902 | ||
db9f0278 | 2903 | DEFUN ("funcall", Ffuncall, Sfuncall, 1, MANY, 0, |
9dbc9081 PJ |
2904 | doc: /* Call first argument as a function, passing remaining arguments to it. |
2905 | Return the value that function returns. | |
2906 | Thus, (funcall 'cons 'x 'y) returns (x . y). | |
2907 | usage: (funcall FUNCTION &rest ARGUMENTS) */) | |
5842a27b | 2908 | (int nargs, Lisp_Object *args) |
db9f0278 | 2909 | { |
8788120f | 2910 | Lisp_Object fun, original_fun; |
db9f0278 JB |
2911 | Lisp_Object funcar; |
2912 | int numargs = nargs - 1; | |
2913 | Lisp_Object lisp_numargs; | |
2914 | Lisp_Object val; | |
2915 | struct backtrace backtrace; | |
2916 | register Lisp_Object *internal_args; | |
2917 | register int i; | |
2918 | ||
2919 | QUIT; | |
ee830945 RS |
2920 | if ((consing_since_gc > gc_cons_threshold |
2921 | && consing_since_gc > gc_relative_threshold) | |
2922 | || | |
2923 | (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold)) | |
a6e3fa71 | 2924 | Fgarbage_collect (); |
db9f0278 JB |
2925 | |
2926 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2927 | { | |
2928 | if (max_lisp_eval_depth < 100) | |
2929 | max_lisp_eval_depth = 100; | |
2930 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2931 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2932 | } |
2933 | ||
2934 | backtrace.next = backtrace_list; | |
2935 | backtrace_list = &backtrace; | |
2936 | backtrace.function = &args[0]; | |
2937 | backtrace.args = &args[1]; | |
2938 | backtrace.nargs = nargs - 1; | |
2939 | backtrace.evalargs = 0; | |
2940 | backtrace.debug_on_exit = 0; | |
2941 | ||
2942 | if (debug_on_next_call) | |
2943 | do_debug_on_call (Qlambda); | |
2944 | ||
fff3ff9c KS |
2945 | CHECK_CONS_LIST (); |
2946 | ||
8788120f KS |
2947 | original_fun = args[0]; |
2948 | ||
db9f0278 JB |
2949 | retry: |
2950 | ||
8788120f KS |
2951 | /* Optimize for no indirection. */ |
2952 | fun = original_fun; | |
2953 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2954 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2955 | fun = indirect_function (fun); | |
db9f0278 | 2956 | |
90165123 | 2957 | if (SUBRP (fun)) |
db9f0278 | 2958 | { |
ef1b0ba7 | 2959 | if (numargs < XSUBR (fun)->min_args |
db9f0278 JB |
2960 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) |
2961 | { | |
a631e24c | 2962 | XSETFASTINT (lisp_numargs, numargs); |
734d55a2 | 2963 | xsignal2 (Qwrong_number_of_arguments, original_fun, lisp_numargs); |
db9f0278 JB |
2964 | } |
2965 | ||
ef1b0ba7 | 2966 | else if (XSUBR (fun)->max_args == UNEVALLED) |
734d55a2 | 2967 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2968 | |
ef1b0ba7 SM |
2969 | else if (XSUBR (fun)->max_args == MANY) |
2970 | val = (XSUBR (fun)->function.aMANY) (numargs, args + 1); | |
db9f0278 | 2971 | else |
db9f0278 | 2972 | { |
ef1b0ba7 SM |
2973 | if (XSUBR (fun)->max_args > numargs) |
2974 | { | |
2975 | internal_args = (Lisp_Object *) alloca (XSUBR (fun)->max_args * sizeof (Lisp_Object)); | |
2976 | memcpy (internal_args, args + 1, numargs * sizeof (Lisp_Object)); | |
2977 | for (i = numargs; i < XSUBR (fun)->max_args; i++) | |
2978 | internal_args[i] = Qnil; | |
2979 | } | |
2980 | else | |
2981 | internal_args = args + 1; | |
2982 | switch (XSUBR (fun)->max_args) | |
2983 | { | |
2984 | case 0: | |
2985 | val = (XSUBR (fun)->function.a0 ()); | |
2986 | break; | |
2987 | case 1: | |
2988 | val = (XSUBR (fun)->function.a1 (internal_args[0])); | |
2989 | break; | |
2990 | case 2: | |
2991 | val = (XSUBR (fun)->function.a2 | |
2992 | (internal_args[0], internal_args[1])); | |
2993 | break; | |
2994 | case 3: | |
2995 | val = (XSUBR (fun)->function.a3 | |
2996 | (internal_args[0], internal_args[1], internal_args[2])); | |
2997 | break; | |
2998 | case 4: | |
2999 | val = (XSUBR (fun)->function.a4 | |
3000 | (internal_args[0], internal_args[1], internal_args[2], | |
3001 | internal_args[3])); | |
3002 | break; | |
3003 | case 5: | |
3004 | val = (XSUBR (fun)->function.a5 | |
3005 | (internal_args[0], internal_args[1], internal_args[2], | |
3006 | internal_args[3], internal_args[4])); | |
3007 | break; | |
3008 | case 6: | |
3009 | val = (XSUBR (fun)->function.a6 | |
3010 | (internal_args[0], internal_args[1], internal_args[2], | |
3011 | internal_args[3], internal_args[4], internal_args[5])); | |
3012 | break; | |
3013 | case 7: | |
3014 | val = (XSUBR (fun)->function.a7 | |
3015 | (internal_args[0], internal_args[1], internal_args[2], | |
3016 | internal_args[3], internal_args[4], internal_args[5], | |
3017 | internal_args[6])); | |
3018 | break; | |
3019 | ||
3020 | case 8: | |
3021 | val = (XSUBR (fun)->function.a8 | |
3022 | (internal_args[0], internal_args[1], internal_args[2], | |
3023 | internal_args[3], internal_args[4], internal_args[5], | |
3024 | internal_args[6], internal_args[7])); | |
3025 | break; | |
3026 | ||
3027 | default: | |
3028 | ||
3029 | /* If a subr takes more than 8 arguments without using MANY | |
3030 | or UNEVALLED, we need to extend this function to support it. | |
3031 | Until this is done, there is no way to call the function. */ | |
3032 | abort (); | |
3033 | } | |
db9f0278 JB |
3034 | } |
3035 | } | |
ef1b0ba7 | 3036 | else if (COMPILEDP (fun)) |
db9f0278 JB |
3037 | val = funcall_lambda (fun, numargs, args + 1); |
3038 | else | |
3039 | { | |
8788120f | 3040 | if (EQ (fun, Qunbound)) |
734d55a2 | 3041 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 3042 | if (!CONSP (fun)) |
734d55a2 KS |
3043 | xsignal1 (Qinvalid_function, original_fun); |
3044 | funcar = XCAR (fun); | |
90165123 | 3045 | if (!SYMBOLP (funcar)) |
734d55a2 | 3046 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
3047 | if (EQ (funcar, Qlambda)) |
3048 | val = funcall_lambda (fun, numargs, args + 1); | |
db9f0278 JB |
3049 | else if (EQ (funcar, Qautoload)) |
3050 | { | |
8788120f | 3051 | do_autoload (fun, original_fun); |
fff3ff9c | 3052 | CHECK_CONS_LIST (); |
db9f0278 JB |
3053 | goto retry; |
3054 | } | |
3055 | else | |
734d55a2 | 3056 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 3057 | } |
c1788fbc | 3058 | CHECK_CONS_LIST (); |
db9f0278 JB |
3059 | lisp_eval_depth--; |
3060 | if (backtrace.debug_on_exit) | |
3061 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
3062 | backtrace_list = backtrace.next; | |
3063 | return val; | |
3064 | } | |
3065 | \f | |
3066 | Lisp_Object | |
d3da34e0 | 3067 | apply_lambda (Lisp_Object fun, Lisp_Object args, int eval_flag) |
db9f0278 JB |
3068 | { |
3069 | Lisp_Object args_left; | |
3070 | Lisp_Object numargs; | |
3071 | register Lisp_Object *arg_vector; | |
3072 | struct gcpro gcpro1, gcpro2, gcpro3; | |
3073 | register int i; | |
3074 | register Lisp_Object tem; | |
3a7a9129 | 3075 | USE_SAFE_ALLOCA; |
db9f0278 JB |
3076 | |
3077 | numargs = Flength (args); | |
b72e0717 | 3078 | SAFE_ALLOCA_LISP (arg_vector, XINT (numargs)); |
db9f0278 JB |
3079 | args_left = args; |
3080 | ||
3081 | GCPRO3 (*arg_vector, args_left, fun); | |
3082 | gcpro1.nvars = 0; | |
3083 | ||
3084 | for (i = 0; i < XINT (numargs);) | |
3085 | { | |
3086 | tem = Fcar (args_left), args_left = Fcdr (args_left); | |
3087 | if (eval_flag) tem = Feval (tem); | |
3088 | arg_vector[i++] = tem; | |
3089 | gcpro1.nvars = i; | |
3090 | } | |
3091 | ||
3092 | UNGCPRO; | |
3093 | ||
3094 | if (eval_flag) | |
3095 | { | |
3096 | backtrace_list->args = arg_vector; | |
3097 | backtrace_list->nargs = i; | |
3098 | } | |
3099 | backtrace_list->evalargs = 0; | |
3100 | tem = funcall_lambda (fun, XINT (numargs), arg_vector); | |
3101 | ||
3102 | /* Do the debug-on-exit now, while arg_vector still exists. */ | |
3103 | if (backtrace_list->debug_on_exit) | |
3104 | tem = call_debugger (Fcons (Qexit, Fcons (tem, Qnil))); | |
3105 | /* Don't do it again when we return to eval. */ | |
3106 | backtrace_list->debug_on_exit = 0; | |
3a7a9129 | 3107 | SAFE_FREE (); |
db9f0278 JB |
3108 | return tem; |
3109 | } | |
3110 | ||
3111 | /* Apply a Lisp function FUN to the NARGS evaluated arguments in ARG_VECTOR | |
3112 | and return the result of evaluation. | |
3113 | FUN must be either a lambda-expression or a compiled-code object. */ | |
3114 | ||
2901f1d1 | 3115 | static Lisp_Object |
d3da34e0 | 3116 | funcall_lambda (Lisp_Object fun, int nargs, register Lisp_Object *arg_vector) |
db9f0278 | 3117 | { |
9ab90667 | 3118 | Lisp_Object val, syms_left, next; |
aed13378 | 3119 | int count = SPECPDL_INDEX (); |
9ab90667 | 3120 | int i, optional, rest; |
db9f0278 | 3121 | |
90165123 | 3122 | if (CONSP (fun)) |
9ab90667 GM |
3123 | { |
3124 | syms_left = XCDR (fun); | |
3125 | if (CONSP (syms_left)) | |
3126 | syms_left = XCAR (syms_left); | |
3127 | else | |
734d55a2 | 3128 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 3129 | } |
90165123 | 3130 | else if (COMPILEDP (fun)) |
845975f5 | 3131 | syms_left = AREF (fun, COMPILED_ARGLIST); |
9ab90667 GM |
3132 | else |
3133 | abort (); | |
db9f0278 | 3134 | |
9ab90667 GM |
3135 | i = optional = rest = 0; |
3136 | for (; CONSP (syms_left); syms_left = XCDR (syms_left)) | |
db9f0278 JB |
3137 | { |
3138 | QUIT; | |
177c0ea7 | 3139 | |
9ab90667 | 3140 | next = XCAR (syms_left); |
8788120f | 3141 | if (!SYMBOLP (next)) |
734d55a2 | 3142 | xsignal1 (Qinvalid_function, fun); |
177c0ea7 | 3143 | |
db9f0278 JB |
3144 | if (EQ (next, Qand_rest)) |
3145 | rest = 1; | |
3146 | else if (EQ (next, Qand_optional)) | |
3147 | optional = 1; | |
3148 | else if (rest) | |
3149 | { | |
9ffa21d4 | 3150 | specbind (next, Flist (nargs - i, &arg_vector[i])); |
db9f0278 JB |
3151 | i = nargs; |
3152 | } | |
3153 | else if (i < nargs) | |
9ab90667 | 3154 | specbind (next, arg_vector[i++]); |
db9f0278 | 3155 | else if (!optional) |
734d55a2 | 3156 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 JB |
3157 | else |
3158 | specbind (next, Qnil); | |
3159 | } | |
3160 | ||
9ab90667 | 3161 | if (!NILP (syms_left)) |
734d55a2 | 3162 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 3163 | else if (i < nargs) |
734d55a2 | 3164 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 | 3165 | |
90165123 | 3166 | if (CONSP (fun)) |
9ab90667 | 3167 | val = Fprogn (XCDR (XCDR (fun))); |
db9f0278 | 3168 | else |
ca248607 RS |
3169 | { |
3170 | /* If we have not actually read the bytecode string | |
3171 | and constants vector yet, fetch them from the file. */ | |
845975f5 | 3172 | if (CONSP (AREF (fun, COMPILED_BYTECODE))) |
661c7d6e | 3173 | Ffetch_bytecode (fun); |
845975f5 SM |
3174 | val = Fbyte_code (AREF (fun, COMPILED_BYTECODE), |
3175 | AREF (fun, COMPILED_CONSTANTS), | |
3176 | AREF (fun, COMPILED_STACK_DEPTH)); | |
ca248607 | 3177 | } |
177c0ea7 | 3178 | |
db9f0278 JB |
3179 | return unbind_to (count, val); |
3180 | } | |
661c7d6e KH |
3181 | |
3182 | DEFUN ("fetch-bytecode", Ffetch_bytecode, Sfetch_bytecode, | |
9dbc9081 PJ |
3183 | 1, 1, 0, |
3184 | doc: /* If byte-compiled OBJECT is lazy-loaded, fetch it now. */) | |
5842a27b | 3185 | (Lisp_Object object) |
661c7d6e KH |
3186 | { |
3187 | Lisp_Object tem; | |
3188 | ||
845975f5 | 3189 | if (COMPILEDP (object) && CONSP (AREF (object, COMPILED_BYTECODE))) |
661c7d6e | 3190 | { |
845975f5 | 3191 | tem = read_doc_string (AREF (object, COMPILED_BYTECODE)); |
5bbdb090 | 3192 | if (!CONSP (tem)) |
845975f5 SM |
3193 | { |
3194 | tem = AREF (object, COMPILED_BYTECODE); | |
3195 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
d5db4077 | 3196 | error ("Invalid byte code in %s", SDATA (XCAR (tem))); |
845975f5 SM |
3197 | else |
3198 | error ("Invalid byte code"); | |
3199 | } | |
3ae565b3 SM |
3200 | ASET (object, COMPILED_BYTECODE, XCAR (tem)); |
3201 | ASET (object, COMPILED_CONSTANTS, XCDR (tem)); | |
661c7d6e KH |
3202 | } |
3203 | return object; | |
3204 | } | |
db9f0278 JB |
3205 | \f |
3206 | void | |
d3da34e0 | 3207 | grow_specpdl (void) |
db9f0278 | 3208 | { |
aed13378 | 3209 | register int count = SPECPDL_INDEX (); |
db9f0278 JB |
3210 | if (specpdl_size >= max_specpdl_size) |
3211 | { | |
3212 | if (max_specpdl_size < 400) | |
3213 | max_specpdl_size = 400; | |
3214 | if (specpdl_size >= max_specpdl_size) | |
734d55a2 | 3215 | signal_error ("Variable binding depth exceeds max-specpdl-size", Qnil); |
db9f0278 JB |
3216 | } |
3217 | specpdl_size *= 2; | |
3218 | if (specpdl_size > max_specpdl_size) | |
3219 | specpdl_size = max_specpdl_size; | |
3220 | specpdl = (struct specbinding *) xrealloc (specpdl, specpdl_size * sizeof (struct specbinding)); | |
3221 | specpdl_ptr = specpdl + count; | |
3222 | } | |
3223 | ||
4e2db1fe SM |
3224 | /* specpdl_ptr->symbol is a field which describes which variable is |
3225 | let-bound, so it can be properly undone when we unbind_to. | |
3226 | It can have the following two shapes: | |
3227 | - SYMBOL : if it's a plain symbol, it means that we have let-bound | |
3228 | a symbol that is not buffer-local (at least at the time | |
3229 | the let binding started). Note also that it should not be | |
3230 | aliased (i.e. when let-binding V1 that's aliased to V2, we want | |
3231 | to record V2 here). | |
3232 | - (SYMBOL WHERE . BUFFER) : this means that it is a let-binding for | |
3233 | variable SYMBOL which can be buffer-local. WHERE tells us | |
3234 | which buffer is affected (or nil if the let-binding affects the | |
3235 | global value of the variable) and BUFFER tells us which buffer was | |
3236 | current (i.e. if WHERE is non-nil, then BUFFER==WHERE, otherwise | |
3237 | BUFFER did not yet have a buffer-local value). */ | |
3238 | ||
db9f0278 | 3239 | void |
d3da34e0 | 3240 | specbind (Lisp_Object symbol, Lisp_Object value) |
db9f0278 | 3241 | { |
ce5b453a SM |
3242 | struct Lisp_Symbol *sym; |
3243 | ||
3244 | eassert (!handling_signal); | |
db9f0278 | 3245 | |
b7826503 | 3246 | CHECK_SYMBOL (symbol); |
ce5b453a | 3247 | sym = XSYMBOL (symbol); |
db9f0278 JB |
3248 | if (specpdl_ptr == specpdl + specpdl_size) |
3249 | grow_specpdl (); | |
719177b3 | 3250 | |
ce5b453a SM |
3251 | start: |
3252 | switch (sym->redirect) | |
719177b3 | 3253 | { |
ce5b453a SM |
3254 | case SYMBOL_VARALIAS: |
3255 | sym = indirect_variable (sym); XSETSYMBOL (symbol, sym); goto start; | |
3256 | case SYMBOL_PLAINVAL: | |
bb8e180f AS |
3257 | /* The most common case is that of a non-constant symbol with a |
3258 | trivial value. Make that as fast as we can. */ | |
3259 | specpdl_ptr->symbol = symbol; | |
3260 | specpdl_ptr->old_value = SYMBOL_VAL (sym); | |
3261 | specpdl_ptr->func = NULL; | |
3262 | ++specpdl_ptr; | |
3263 | if (!sym->constant) | |
3264 | SET_SYMBOL_VAL (sym, value); | |
3265 | else | |
3266 | set_internal (symbol, value, Qnil, 1); | |
3267 | break; | |
4e2db1fe SM |
3268 | case SYMBOL_LOCALIZED: |
3269 | if (SYMBOL_BLV (sym)->frame_local) | |
3270 | error ("Frame-local vars cannot be let-bound"); | |
3271 | case SYMBOL_FORWARDED: | |
ce5b453a SM |
3272 | { |
3273 | Lisp_Object ovalue = find_symbol_value (symbol); | |
3274 | specpdl_ptr->func = 0; | |
3275 | specpdl_ptr->old_value = ovalue; | |
3276 | ||
3277 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3278 | || (EQ (SYMBOL_BLV (sym)->where, | |
3279 | SYMBOL_BLV (sym)->frame_local ? | |
3280 | Fselected_frame () : Fcurrent_buffer ()))); | |
3281 | ||
3282 | if (sym->redirect == SYMBOL_LOCALIZED | |
3283 | || BUFFER_OBJFWDP (SYMBOL_FWD (sym))) | |
3284 | { | |
3285 | Lisp_Object where, cur_buf = Fcurrent_buffer (); | |
3286 | ||
3287 | /* For a local variable, record both the symbol and which | |
3288 | buffer's or frame's value we are saving. */ | |
3289 | if (!NILP (Flocal_variable_p (symbol, Qnil))) | |
3290 | { | |
3291 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3292 | || (BLV_FOUND (SYMBOL_BLV (sym)) | |
3293 | && EQ (cur_buf, SYMBOL_BLV (sym)->where))); | |
3294 | where = cur_buf; | |
3295 | } | |
3296 | else if (sym->redirect == SYMBOL_LOCALIZED | |
3297 | && BLV_FOUND (SYMBOL_BLV (sym))) | |
3298 | where = SYMBOL_BLV (sym)->where; | |
3299 | else | |
3300 | where = Qnil; | |
3301 | ||
3302 | /* We're not using the `unused' slot in the specbinding | |
3303 | structure because this would mean we have to do more | |
3304 | work for simple variables. */ | |
3305 | /* FIXME: The third value `current_buffer' is only used in | |
3306 | let_shadows_buffer_binding_p which is itself only used | |
3307 | in set_internal for local_if_set. */ | |
4e2db1fe | 3308 | eassert (NILP (where) || EQ (where, cur_buf)); |
ce5b453a SM |
3309 | specpdl_ptr->symbol = Fcons (symbol, Fcons (where, cur_buf)); |
3310 | ||
3311 | /* If SYMBOL is a per-buffer variable which doesn't have a | |
3312 | buffer-local value here, make the `let' change the global | |
3313 | value by changing the value of SYMBOL in all buffers not | |
3314 | having their own value. This is consistent with what | |
3315 | happens with other buffer-local variables. */ | |
3316 | if (NILP (where) | |
3317 | && sym->redirect == SYMBOL_FORWARDED) | |
3318 | { | |
3319 | eassert (BUFFER_OBJFWDP (SYMBOL_FWD (sym))); | |
3320 | ++specpdl_ptr; | |
3321 | Fset_default (symbol, value); | |
3322 | return; | |
3323 | } | |
3324 | } | |
3325 | else | |
3326 | specpdl_ptr->symbol = symbol; | |
3327 | ||
3328 | specpdl_ptr++; | |
94b612ad | 3329 | set_internal (symbol, value, Qnil, 1); |
ce5b453a SM |
3330 | break; |
3331 | } | |
3332 | default: abort (); | |
9ab90667 | 3333 | } |
db9f0278 JB |
3334 | } |
3335 | ||
3336 | void | |
d3da34e0 | 3337 | record_unwind_protect (Lisp_Object (*function) (Lisp_Object), Lisp_Object arg) |
db9f0278 | 3338 | { |
9ba8e10d CY |
3339 | eassert (!handling_signal); |
3340 | ||
db9f0278 JB |
3341 | if (specpdl_ptr == specpdl + specpdl_size) |
3342 | grow_specpdl (); | |
3343 | specpdl_ptr->func = function; | |
3344 | specpdl_ptr->symbol = Qnil; | |
3345 | specpdl_ptr->old_value = arg; | |
3346 | specpdl_ptr++; | |
3347 | } | |
3348 | ||
3349 | Lisp_Object | |
d3da34e0 | 3350 | unbind_to (int count, Lisp_Object value) |
db9f0278 | 3351 | { |
5a073f50 KS |
3352 | Lisp_Object quitf = Vquit_flag; |
3353 | struct gcpro gcpro1, gcpro2; | |
db9f0278 | 3354 | |
5a073f50 | 3355 | GCPRO2 (value, quitf); |
db9f0278 JB |
3356 | Vquit_flag = Qnil; |
3357 | ||
3358 | while (specpdl_ptr != specpdl + count) | |
3359 | { | |
611a8f8c RS |
3360 | /* Copy the binding, and decrement specpdl_ptr, before we do |
3361 | the work to unbind it. We decrement first | |
3362 | so that an error in unbinding won't try to unbind | |
3363 | the same entry again, and we copy the binding first | |
3364 | in case more bindings are made during some of the code we run. */ | |
eb700b82 | 3365 | |
45f266dc DL |
3366 | struct specbinding this_binding; |
3367 | this_binding = *--specpdl_ptr; | |
611a8f8c RS |
3368 | |
3369 | if (this_binding.func != 0) | |
3370 | (*this_binding.func) (this_binding.old_value); | |
0967b4b0 GM |
3371 | /* If the symbol is a list, it is really (SYMBOL WHERE |
3372 | . CURRENT-BUFFER) where WHERE is either nil, a buffer, or a | |
3373 | frame. If WHERE is a buffer or frame, this indicates we | |
1b1acc13 PJ |
3374 | bound a variable that had a buffer-local or frame-local |
3375 | binding. WHERE nil means that the variable had the default | |
0967b4b0 | 3376 | value when it was bound. CURRENT-BUFFER is the buffer that |
bb8e180f | 3377 | was current when the variable was bound. */ |
611a8f8c | 3378 | else if (CONSP (this_binding.symbol)) |
719177b3 | 3379 | { |
eb700b82 | 3380 | Lisp_Object symbol, where; |
719177b3 | 3381 | |
611a8f8c RS |
3382 | symbol = XCAR (this_binding.symbol); |
3383 | where = XCAR (XCDR (this_binding.symbol)); | |
719177b3 | 3384 | |
eb700b82 | 3385 | if (NILP (where)) |
611a8f8c | 3386 | Fset_default (symbol, this_binding.old_value); |
94b612ad SM |
3387 | /* If `where' is non-nil, reset the value in the appropriate |
3388 | local binding, but only if that binding still exists. */ | |
4e2db1fe SM |
3389 | else if (BUFFERP (where) |
3390 | ? !NILP (Flocal_variable_p (symbol, where)) | |
3391 | : !NILP (Fassq (symbol, XFRAME (where)->param_alist))) | |
3392 | set_internal (symbol, this_binding.old_value, where, 1); | |
719177b3 | 3393 | } |
94b612ad SM |
3394 | /* If variable has a trivial value (no forwarding), we can |
3395 | just set it. No need to check for constant symbols here, | |
3396 | since that was already done by specbind. */ | |
3397 | else if (XSYMBOL (this_binding.symbol)->redirect == SYMBOL_PLAINVAL) | |
3398 | SET_SYMBOL_VAL (XSYMBOL (this_binding.symbol), | |
3399 | this_binding.old_value); | |
db9f0278 | 3400 | else |
94b612ad SM |
3401 | /* NOTE: we only ever come here if make_local_foo was used for |
3402 | the first time on this var within this let. */ | |
3403 | Fset_default (this_binding.symbol, this_binding.old_value); | |
db9f0278 | 3404 | } |
177c0ea7 | 3405 | |
5a073f50 KS |
3406 | if (NILP (Vquit_flag) && !NILP (quitf)) |
3407 | Vquit_flag = quitf; | |
db9f0278 JB |
3408 | |
3409 | UNGCPRO; | |
db9f0278 JB |
3410 | return value; |
3411 | } | |
3412 | \f | |
db9f0278 | 3413 | DEFUN ("backtrace-debug", Fbacktrace_debug, Sbacktrace_debug, 2, 2, 0, |
9dbc9081 PJ |
3414 | doc: /* Set the debug-on-exit flag of eval frame LEVEL levels down to FLAG. |
3415 | The debugger is entered when that frame exits, if the flag is non-nil. */) | |
5842a27b | 3416 | (Lisp_Object level, Lisp_Object flag) |
db9f0278 JB |
3417 | { |
3418 | register struct backtrace *backlist = backtrace_list; | |
3419 | register int i; | |
3420 | ||
b7826503 | 3421 | CHECK_NUMBER (level); |
db9f0278 JB |
3422 | |
3423 | for (i = 0; backlist && i < XINT (level); i++) | |
3424 | { | |
3425 | backlist = backlist->next; | |
3426 | } | |
3427 | ||
3428 | if (backlist) | |
265a9e55 | 3429 | backlist->debug_on_exit = !NILP (flag); |
db9f0278 JB |
3430 | |
3431 | return flag; | |
3432 | } | |
3433 | ||
3434 | DEFUN ("backtrace", Fbacktrace, Sbacktrace, 0, 0, "", | |
9dbc9081 PJ |
3435 | doc: /* Print a trace of Lisp function calls currently active. |
3436 | Output stream used is value of `standard-output'. */) | |
5842a27b | 3437 | (void) |
db9f0278 JB |
3438 | { |
3439 | register struct backtrace *backlist = backtrace_list; | |
3440 | register int i; | |
3441 | Lisp_Object tail; | |
3442 | Lisp_Object tem; | |
db9f0278 | 3443 | struct gcpro gcpro1; |
d4b6d95d | 3444 | Lisp_Object old_print_level = Vprint_level; |
db9f0278 | 3445 | |
d4b6d95d LMI |
3446 | if (NILP (Vprint_level)) |
3447 | XSETFASTINT (Vprint_level, 8); | |
db9f0278 JB |
3448 | |
3449 | tail = Qnil; | |
3450 | GCPRO1 (tail); | |
3451 | ||
3452 | while (backlist) | |
3453 | { | |
3454 | write_string (backlist->debug_on_exit ? "* " : " ", 2); | |
3455 | if (backlist->nargs == UNEVALLED) | |
3456 | { | |
3457 | Fprin1 (Fcons (*backlist->function, *backlist->args), Qnil); | |
b6703b02 | 3458 | write_string ("\n", -1); |
db9f0278 JB |
3459 | } |
3460 | else | |
3461 | { | |
3462 | tem = *backlist->function; | |
3463 | Fprin1 (tem, Qnil); /* This can QUIT */ | |
3464 | write_string ("(", -1); | |
3465 | if (backlist->nargs == MANY) | |
3466 | { | |
3467 | for (tail = *backlist->args, i = 0; | |
265a9e55 | 3468 | !NILP (tail); |
db9f0278 JB |
3469 | tail = Fcdr (tail), i++) |
3470 | { | |
3471 | if (i) write_string (" ", -1); | |
3472 | Fprin1 (Fcar (tail), Qnil); | |
3473 | } | |
3474 | } | |
3475 | else | |
3476 | { | |
3477 | for (i = 0; i < backlist->nargs; i++) | |
3478 | { | |
3479 | if (i) write_string (" ", -1); | |
3480 | Fprin1 (backlist->args[i], Qnil); | |
3481 | } | |
3482 | } | |
b6703b02 | 3483 | write_string (")\n", -1); |
db9f0278 | 3484 | } |
db9f0278 JB |
3485 | backlist = backlist->next; |
3486 | } | |
3487 | ||
d4b6d95d | 3488 | Vprint_level = old_print_level; |
db9f0278 JB |
3489 | UNGCPRO; |
3490 | return Qnil; | |
3491 | } | |
3492 | ||
17401c97 | 3493 | DEFUN ("backtrace-frame", Fbacktrace_frame, Sbacktrace_frame, 1, 1, NULL, |
9dbc9081 PJ |
3494 | doc: /* Return the function and arguments NFRAMES up from current execution point. |
3495 | If that frame has not evaluated the arguments yet (or is a special form), | |
3496 | the value is (nil FUNCTION ARG-FORMS...). | |
3497 | If that frame has evaluated its arguments and called its function already, | |
3498 | the value is (t FUNCTION ARG-VALUES...). | |
3499 | A &rest arg is represented as the tail of the list ARG-VALUES. | |
3500 | FUNCTION is whatever was supplied as car of evaluated list, | |
3501 | or a lambda expression for macro calls. | |
3502 | If NFRAMES is more than the number of frames, the value is nil. */) | |
5842a27b | 3503 | (Lisp_Object nframes) |
db9f0278 JB |
3504 | { |
3505 | register struct backtrace *backlist = backtrace_list; | |
3506 | register int i; | |
3507 | Lisp_Object tem; | |
3508 | ||
b7826503 | 3509 | CHECK_NATNUM (nframes); |
db9f0278 JB |
3510 | |
3511 | /* Find the frame requested. */ | |
b6703b02 | 3512 | for (i = 0; backlist && i < XFASTINT (nframes); i++) |
db9f0278 JB |
3513 | backlist = backlist->next; |
3514 | ||
3515 | if (!backlist) | |
3516 | return Qnil; | |
3517 | if (backlist->nargs == UNEVALLED) | |
3518 | return Fcons (Qnil, Fcons (*backlist->function, *backlist->args)); | |
3519 | else | |
3520 | { | |
3521 | if (backlist->nargs == MANY) | |
3522 | tem = *backlist->args; | |
3523 | else | |
3524 | tem = Flist (backlist->nargs, backlist->args); | |
3525 | ||
3526 | return Fcons (Qt, Fcons (*backlist->function, tem)); | |
3527 | } | |
3528 | } | |
a2ff3819 | 3529 | |
db9f0278 | 3530 | \f |
4ce0541e | 3531 | void |
d3da34e0 | 3532 | mark_backtrace (void) |
4ce0541e SM |
3533 | { |
3534 | register struct backtrace *backlist; | |
3535 | register int i; | |
3536 | ||
3537 | for (backlist = backtrace_list; backlist; backlist = backlist->next) | |
3538 | { | |
3539 | mark_object (*backlist->function); | |
3540 | ||
3541 | if (backlist->nargs == UNEVALLED || backlist->nargs == MANY) | |
3542 | i = 0; | |
3543 | else | |
3544 | i = backlist->nargs - 1; | |
3545 | for (; i >= 0; i--) | |
3546 | mark_object (backlist->args[i]); | |
3547 | } | |
3548 | } | |
3549 | ||
dfcf069d | 3550 | void |
d3da34e0 | 3551 | syms_of_eval (void) |
db9f0278 JB |
3552 | { |
3553 | DEFVAR_INT ("max-specpdl-size", &max_specpdl_size, | |
82fc29a1 | 3554 | doc: /* *Limit on number of Lisp variable bindings and `unwind-protect's. |
9f5903bb | 3555 | If Lisp code tries to increase the total number past this amount, |
2520dc0c RS |
3556 | an error is signaled. |
3557 | You can safely use a value considerably larger than the default value, | |
3558 | if that proves inconveniently small. However, if you increase it too far, | |
3559 | Emacs could run out of memory trying to make the stack bigger. */); | |
db9f0278 JB |
3560 | |
3561 | DEFVAR_INT ("max-lisp-eval-depth", &max_lisp_eval_depth, | |
9dbc9081 | 3562 | doc: /* *Limit on depth in `eval', `apply' and `funcall' before error. |
2520dc0c RS |
3563 | |
3564 | This limit serves to catch infinite recursions for you before they cause | |
9dbc9081 PJ |
3565 | actual stack overflow in C, which would be fatal for Emacs. |
3566 | You can safely make it considerably larger than its default value, | |
2520dc0c RS |
3567 | if that proves inconveniently small. However, if you increase it too far, |
3568 | Emacs could overflow the real C stack, and crash. */); | |
db9f0278 JB |
3569 | |
3570 | DEFVAR_LISP ("quit-flag", &Vquit_flag, | |
9dbc9081 | 3571 | doc: /* Non-nil causes `eval' to abort, unless `inhibit-quit' is non-nil. |
42ed718e RS |
3572 | If the value is t, that means do an ordinary quit. |
3573 | If the value equals `throw-on-input', that means quit by throwing | |
3574 | to the tag specified in `throw-on-input'; it's for handling `while-no-input'. | |
3575 | Typing C-g sets `quit-flag' to t, regardless of `inhibit-quit', | |
3576 | but `inhibit-quit' non-nil prevents anything from taking notice of that. */); | |
db9f0278 JB |
3577 | Vquit_flag = Qnil; |
3578 | ||
3579 | DEFVAR_LISP ("inhibit-quit", &Vinhibit_quit, | |
9dbc9081 PJ |
3580 | doc: /* Non-nil inhibits C-g quitting from happening immediately. |
3581 | Note that `quit-flag' will still be set by typing C-g, | |
3582 | so a quit will be signaled as soon as `inhibit-quit' is nil. | |
3583 | To prevent this happening, set `quit-flag' to nil | |
3584 | before making `inhibit-quit' nil. */); | |
db9f0278 JB |
3585 | Vinhibit_quit = Qnil; |
3586 | ||
d67b4f80 | 3587 | Qinhibit_quit = intern_c_string ("inhibit-quit"); |
ad236261 JB |
3588 | staticpro (&Qinhibit_quit); |
3589 | ||
d67b4f80 | 3590 | Qautoload = intern_c_string ("autoload"); |
db9f0278 JB |
3591 | staticpro (&Qautoload); |
3592 | ||
d67b4f80 | 3593 | Qdebug_on_error = intern_c_string ("debug-on-error"); |
db9f0278 JB |
3594 | staticpro (&Qdebug_on_error); |
3595 | ||
d67b4f80 | 3596 | Qmacro = intern_c_string ("macro"); |
db9f0278 JB |
3597 | staticpro (&Qmacro); |
3598 | ||
d67b4f80 | 3599 | Qdeclare = intern_c_string ("declare"); |
d6edd563 | 3600 | staticpro (&Qdeclare); |
177c0ea7 | 3601 | |
db9f0278 JB |
3602 | /* Note that the process handling also uses Qexit, but we don't want |
3603 | to staticpro it twice, so we just do it here. */ | |
d67b4f80 | 3604 | Qexit = intern_c_string ("exit"); |
db9f0278 JB |
3605 | staticpro (&Qexit); |
3606 | ||
d67b4f80 | 3607 | Qinteractive = intern_c_string ("interactive"); |
db9f0278 JB |
3608 | staticpro (&Qinteractive); |
3609 | ||
d67b4f80 | 3610 | Qcommandp = intern_c_string ("commandp"); |
db9f0278 JB |
3611 | staticpro (&Qcommandp); |
3612 | ||
d67b4f80 | 3613 | Qdefun = intern_c_string ("defun"); |
db9f0278 JB |
3614 | staticpro (&Qdefun); |
3615 | ||
d67b4f80 | 3616 | Qand_rest = intern_c_string ("&rest"); |
db9f0278 JB |
3617 | staticpro (&Qand_rest); |
3618 | ||
d67b4f80 | 3619 | Qand_optional = intern_c_string ("&optional"); |
db9f0278 JB |
3620 | staticpro (&Qand_optional); |
3621 | ||
d67b4f80 | 3622 | Qdebug = intern_c_string ("debug"); |
f01cbfdd RS |
3623 | staticpro (&Qdebug); |
3624 | ||
128c0f66 | 3625 | DEFVAR_LISP ("stack-trace-on-error", &Vstack_trace_on_error, |
704788b3 RS |
3626 | doc: /* *Non-nil means errors display a backtrace buffer. |
3627 | More precisely, this happens for any error that is handled | |
3628 | by the editor command loop. | |
9dbc9081 PJ |
3629 | If the value is a list, an error only means to display a backtrace |
3630 | if one of its condition symbols appears in the list. */); | |
128c0f66 | 3631 | Vstack_trace_on_error = Qnil; |
db9f0278 | 3632 | |
128c0f66 | 3633 | DEFVAR_LISP ("debug-on-error", &Vdebug_on_error, |
9dbc9081 PJ |
3634 | doc: /* *Non-nil means enter debugger if an error is signaled. |
3635 | Does not apply to errors handled by `condition-case' or those | |
3636 | matched by `debug-ignored-errors'. | |
3637 | If the value is a list, an error only means to enter the debugger | |
3638 | if one of its condition symbols appears in the list. | |
3639 | When you evaluate an expression interactively, this variable | |
3640 | is temporarily non-nil if `eval-expression-debug-on-error' is non-nil. | |
fbbdcf2f CY |
3641 | The command `toggle-debug-on-error' toggles this. |
3642 | See also the variable `debug-on-quit'. */); | |
128c0f66 | 3643 | Vdebug_on_error = Qnil; |
db9f0278 | 3644 | |
fc950e09 | 3645 | DEFVAR_LISP ("debug-ignored-errors", &Vdebug_ignored_errors, |
9dbc9081 PJ |
3646 | doc: /* *List of errors for which the debugger should not be called. |
3647 | Each element may be a condition-name or a regexp that matches error messages. | |
3648 | If any element applies to a given error, that error skips the debugger | |
3649 | and just returns to top level. | |
3650 | This overrides the variable `debug-on-error'. | |
3651 | It does not apply to errors handled by `condition-case'. */); | |
fc950e09 KH |
3652 | Vdebug_ignored_errors = Qnil; |
3653 | ||
db9f0278 | 3654 | DEFVAR_BOOL ("debug-on-quit", &debug_on_quit, |
82fc29a1 JB |
3655 | doc: /* *Non-nil means enter debugger if quit is signaled (C-g, for example). |
3656 | Does not apply if quit is handled by a `condition-case'. */); | |
db9f0278 JB |
3657 | debug_on_quit = 0; |
3658 | ||
3659 | DEFVAR_BOOL ("debug-on-next-call", &debug_on_next_call, | |
9dbc9081 | 3660 | doc: /* Non-nil means enter debugger before next `eval', `apply' or `funcall'. */); |
db9f0278 | 3661 | |
556d7314 | 3662 | DEFVAR_BOOL ("debugger-may-continue", &debugger_may_continue, |
9dbc9081 PJ |
3663 | doc: /* Non-nil means debugger may continue execution. |
3664 | This is nil when the debugger is called under circumstances where it | |
3665 | might not be safe to continue. */); | |
dac204bc | 3666 | debugger_may_continue = 1; |
556d7314 | 3667 | |
db9f0278 | 3668 | DEFVAR_LISP ("debugger", &Vdebugger, |
9dbc9081 PJ |
3669 | doc: /* Function to call to invoke debugger. |
3670 | If due to frame exit, args are `exit' and the value being returned; | |
3671 | this function's value will be returned instead of that. | |
3672 | If due to error, args are `error' and a list of the args to `signal'. | |
3673 | If due to `apply' or `funcall' entry, one arg, `lambda'. | |
3674 | If due to `eval' entry, one arg, t. */); | |
db9f0278 JB |
3675 | Vdebugger = Qnil; |
3676 | ||
61ede770 | 3677 | DEFVAR_LISP ("signal-hook-function", &Vsignal_hook_function, |
9dbc9081 PJ |
3678 | doc: /* If non-nil, this is a function for `signal' to call. |
3679 | It receives the same arguments that `signal' was given. | |
3680 | The Edebug package uses this to regain control. */); | |
61ede770 RS |
3681 | Vsignal_hook_function = Qnil; |
3682 | ||
57a6e758 | 3683 | DEFVAR_LISP ("debug-on-signal", &Vdebug_on_signal, |
9dbc9081 PJ |
3684 | doc: /* *Non-nil means call the debugger regardless of condition handlers. |
3685 | Note that `debug-on-error', `debug-on-quit' and friends | |
3686 | still determine whether to handle the particular condition. */); | |
57a6e758 | 3687 | Vdebug_on_signal = Qnil; |
61ede770 | 3688 | |
d6edd563 GM |
3689 | DEFVAR_LISP ("macro-declaration-function", &Vmacro_declaration_function, |
3690 | doc: /* Function to process declarations in a macro definition. | |
3691 | The function will be called with two args MACRO and DECL. | |
3692 | MACRO is the name of the macro being defined. | |
3693 | DECL is a list `(declare ...)' containing the declarations. | |
3694 | The value the function returns is not used. */); | |
3695 | Vmacro_declaration_function = Qnil; | |
3696 | ||
d67b4f80 | 3697 | Vrun_hooks = intern_c_string ("run-hooks"); |
6e6e9f08 | 3698 | staticpro (&Vrun_hooks); |
db9f0278 JB |
3699 | |
3700 | staticpro (&Vautoload_queue); | |
3701 | Vautoload_queue = Qnil; | |
a2ff3819 GM |
3702 | staticpro (&Vsignaling_function); |
3703 | Vsignaling_function = Qnil; | |
db9f0278 JB |
3704 | |
3705 | defsubr (&Sor); | |
3706 | defsubr (&Sand); | |
3707 | defsubr (&Sif); | |
3708 | defsubr (&Scond); | |
3709 | defsubr (&Sprogn); | |
3710 | defsubr (&Sprog1); | |
3711 | defsubr (&Sprog2); | |
3712 | defsubr (&Ssetq); | |
3713 | defsubr (&Squote); | |
3714 | defsubr (&Sfunction); | |
3715 | defsubr (&Sdefun); | |
3716 | defsubr (&Sdefmacro); | |
3717 | defsubr (&Sdefvar); | |
19cebf5a | 3718 | defsubr (&Sdefvaralias); |
db9f0278 JB |
3719 | defsubr (&Sdefconst); |
3720 | defsubr (&Suser_variable_p); | |
3721 | defsubr (&Slet); | |
3722 | defsubr (&SletX); | |
3723 | defsubr (&Swhile); | |
3724 | defsubr (&Smacroexpand); | |
3725 | defsubr (&Scatch); | |
3726 | defsubr (&Sthrow); | |
3727 | defsubr (&Sunwind_protect); | |
3728 | defsubr (&Scondition_case); | |
3729 | defsubr (&Ssignal); | |
3730 | defsubr (&Sinteractive_p); | |
4b664e76 | 3731 | defsubr (&Scalled_interactively_p); |
db9f0278 JB |
3732 | defsubr (&Scommandp); |
3733 | defsubr (&Sautoload); | |
3734 | defsubr (&Seval); | |
3735 | defsubr (&Sapply); | |
3736 | defsubr (&Sfuncall); | |
ff936e53 SM |
3737 | defsubr (&Srun_hooks); |
3738 | defsubr (&Srun_hook_with_args); | |
3739 | defsubr (&Srun_hook_with_args_until_success); | |
3740 | defsubr (&Srun_hook_with_args_until_failure); | |
661c7d6e | 3741 | defsubr (&Sfetch_bytecode); |
db9f0278 JB |
3742 | defsubr (&Sbacktrace_debug); |
3743 | defsubr (&Sbacktrace); | |
3744 | defsubr (&Sbacktrace_frame); | |
3745 | } | |
ab5796a9 MB |
3746 | |
3747 | /* arch-tag: 014a07aa-33ab-4a8f-a3d2-ee8a4a9ff7fb | |
3748 | (do not change this comment) */ |