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db9f0278 | 1 | /* Evaluator for GNU Emacs Lisp interpreter. |
f4cfd81a | 2 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1999, 2000, 2001, |
114f9c96 | 3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
8cabe764 | 4 | Free Software Foundation, Inc. |
db9f0278 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
db9f0278 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
db9f0278 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
db9f0278 JB |
20 | |
21 | ||
18160b98 | 22 | #include <config.h> |
d7306fe6 | 23 | #include <setjmp.h> |
db9f0278 | 24 | #include "lisp.h" |
9ac0d9e0 | 25 | #include "blockinput.h" |
db9f0278 | 26 | #include "commands.h" |
1f98fa48 | 27 | #include "keyboard.h" |
3648c842 | 28 | #include "dispextern.h" |
94b612ad | 29 | #include "frame.h" /* For XFRAME. */ |
db9f0278 | 30 | |
b70e1a2b SM |
31 | #if HAVE_X_WINDOWS |
32 | #include "xterm.h" | |
33 | #endif | |
34 | ||
db9f0278 JB |
35 | /* This definition is duplicated in alloc.c and keyboard.c */ |
36 | /* Putting it in lisp.h makes cc bomb out! */ | |
37 | ||
38 | struct backtrace | |
4c576a83 GM |
39 | { |
40 | struct backtrace *next; | |
41 | Lisp_Object *function; | |
42 | Lisp_Object *args; /* Points to vector of args. */ | |
43 | int nargs; /* Length of vector. | |
daa37602 JB |
44 | If nargs is UNEVALLED, args points to slot holding |
45 | list of unevalled args */ | |
4c576a83 GM |
46 | char evalargs; |
47 | /* Nonzero means call value of debugger when done with this operation. */ | |
48 | char debug_on_exit; | |
49 | }; | |
db9f0278 JB |
50 | |
51 | struct backtrace *backtrace_list; | |
52 | ||
db9f0278 JB |
53 | struct catchtag *catchlist; |
54 | ||
15934ffa RS |
55 | #ifdef DEBUG_GCPRO |
56 | /* Count levels of GCPRO to detect failure to UNGCPRO. */ | |
57 | int gcpro_level; | |
58 | #endif | |
59 | ||
6fd797f5 | 60 | Lisp_Object Qautoload, Qmacro, Qexit, Qinteractive, Qcommandp, Qdefun; |
ad236261 | 61 | Lisp_Object Qinhibit_quit, Vinhibit_quit, Vquit_flag; |
db9f0278 JB |
62 | Lisp_Object Qand_rest, Qand_optional; |
63 | Lisp_Object Qdebug_on_error; | |
d6edd563 | 64 | Lisp_Object Qdeclare; |
f01cbfdd | 65 | Lisp_Object Qdebug; |
2b9aa051 | 66 | extern Lisp_Object Qinteractive_form; |
db9f0278 | 67 | |
6e6e9f08 RS |
68 | /* This holds either the symbol `run-hooks' or nil. |
69 | It is nil at an early stage of startup, and when Emacs | |
70 | is shutting down. */ | |
4c576a83 | 71 | |
db9f0278 JB |
72 | Lisp_Object Vrun_hooks; |
73 | ||
74 | /* Non-nil means record all fset's and provide's, to be undone | |
75 | if the file being autoloaded is not fully loaded. | |
76 | They are recorded by being consed onto the front of Vautoload_queue: | |
47b82df9 | 77 | (FUN . ODEF) for a defun, (0 . OFEATURES) for a provide. */ |
db9f0278 JB |
78 | |
79 | Lisp_Object Vautoload_queue; | |
80 | ||
81 | /* Current number of specbindings allocated in specpdl. */ | |
4c576a83 | 82 | |
db9f0278 JB |
83 | int specpdl_size; |
84 | ||
85 | /* Pointer to beginning of specpdl. */ | |
4c576a83 | 86 | |
db9f0278 JB |
87 | struct specbinding *specpdl; |
88 | ||
89 | /* Pointer to first unused element in specpdl. */ | |
4c576a83 | 90 | |
ab837828 | 91 | struct specbinding *specpdl_ptr; |
db9f0278 JB |
92 | |
93 | /* Maximum size allowed for specpdl allocation */ | |
4c576a83 | 94 | |
31ade731 | 95 | EMACS_INT max_specpdl_size; |
db9f0278 JB |
96 | |
97 | /* Depth in Lisp evaluations and function calls. */ | |
4c576a83 | 98 | |
db9f0278 JB |
99 | int lisp_eval_depth; |
100 | ||
101 | /* Maximum allowed depth in Lisp evaluations and function calls. */ | |
4c576a83 | 102 | |
31ade731 | 103 | EMACS_INT max_lisp_eval_depth; |
db9f0278 JB |
104 | |
105 | /* Nonzero means enter debugger before next function call */ | |
4c576a83 | 106 | |
db9f0278 JB |
107 | int debug_on_next_call; |
108 | ||
1b1acc13 | 109 | /* Non-zero means debugger may continue. This is zero when the |
556d7314 GM |
110 | debugger is called during redisplay, where it might not be safe to |
111 | continue the interrupted redisplay. */ | |
112 | ||
113 | int debugger_may_continue; | |
114 | ||
128c0f66 | 115 | /* List of conditions (non-nil atom means all) which cause a backtrace |
4de86b16 | 116 | if an error is handled by the command loop's error handler. */ |
4c576a83 | 117 | |
128c0f66 | 118 | Lisp_Object Vstack_trace_on_error; |
db9f0278 | 119 | |
128c0f66 | 120 | /* List of conditions (non-nil atom means all) which enter the debugger |
4de86b16 | 121 | if an error is handled by the command loop's error handler. */ |
4c576a83 | 122 | |
128c0f66 | 123 | Lisp_Object Vdebug_on_error; |
db9f0278 | 124 | |
fc950e09 | 125 | /* List of conditions and regexps specifying error messages which |
1b1acc13 | 126 | do not enter the debugger even if Vdebug_on_error says they should. */ |
4c576a83 | 127 | |
fc950e09 KH |
128 | Lisp_Object Vdebug_ignored_errors; |
129 | ||
61ede770 | 130 | /* Non-nil means call the debugger even if the error will be handled. */ |
4c576a83 | 131 | |
57a6e758 | 132 | Lisp_Object Vdebug_on_signal; |
61ede770 RS |
133 | |
134 | /* Hook for edebug to use. */ | |
4c576a83 | 135 | |
61ede770 RS |
136 | Lisp_Object Vsignal_hook_function; |
137 | ||
db9f0278 | 138 | /* Nonzero means enter debugger if a quit signal |
128c0f66 | 139 | is handled by the command loop's error handler. */ |
4c576a83 | 140 | |
db9f0278 JB |
141 | int debug_on_quit; |
142 | ||
be857679 | 143 | /* The value of num_nonmacro_input_events as of the last time we |
82da7701 | 144 | started to enter the debugger. If we decide to enter the debugger |
be857679 | 145 | again when this is still equal to num_nonmacro_input_events, then we |
82da7701 JB |
146 | know that the debugger itself has an error, and we should just |
147 | signal the error instead of entering an infinite loop of debugger | |
148 | invocations. */ | |
4c576a83 | 149 | |
82da7701 | 150 | int when_entered_debugger; |
db9f0278 JB |
151 | |
152 | Lisp_Object Vdebugger; | |
153 | ||
a2ff3819 GM |
154 | /* The function from which the last `signal' was called. Set in |
155 | Fsignal. */ | |
156 | ||
157 | Lisp_Object Vsignaling_function; | |
158 | ||
4c576a83 GM |
159 | /* Set to non-zero while processing X events. Checked in Feval to |
160 | make sure the Lisp interpreter isn't called from a signal handler, | |
161 | which is unsafe because the interpreter isn't reentrant. */ | |
162 | ||
163 | int handling_signal; | |
164 | ||
d6edd563 GM |
165 | /* Function to process declarations in defmacro forms. */ |
166 | ||
167 | Lisp_Object Vmacro_declaration_function; | |
168 | ||
873759d5 | 169 | extern Lisp_Object Qrisky_local_variable; |
d6edd563 | 170 | |
1283140e RS |
171 | extern Lisp_Object Qfunction; |
172 | ||
f57e2426 J |
173 | static Lisp_Object funcall_lambda (Lisp_Object, int, Lisp_Object*); |
174 | static void unwind_to_catch (struct catchtag *, Lisp_Object) NO_RETURN; | |
eaa1e5ed EZ |
175 | |
176 | #if __GNUC__ | |
177 | /* "gcc -O3" enables automatic function inlining, which optimizes out | |
178 | the arguments for the invocations of these functions, whereas they | |
179 | expect these values on the stack. */ | |
d3da34e0 JB |
180 | Lisp_Object apply1 (Lisp_Object fn, Lisp_Object arg) __attribute__((noinline)); |
181 | Lisp_Object call2 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2) __attribute__((noinline)); | |
eaa1e5ed | 182 | #endif |
873759d5 | 183 | \f |
dfcf069d | 184 | void |
d3da34e0 | 185 | init_eval_once (void) |
db9f0278 JB |
186 | { |
187 | specpdl_size = 50; | |
716acfce | 188 | specpdl = (struct specbinding *) xmalloc (specpdl_size * sizeof (struct specbinding)); |
270e8074 | 189 | specpdl_ptr = specpdl; |
6588243d | 190 | /* Don't forget to update docs (lispref node "Local Variables"). */ |
a4547405 | 191 | max_specpdl_size = 1000; |
f983eb8a | 192 | max_lisp_eval_depth = 500; |
34d470ba RS |
193 | |
194 | Vrun_hooks = Qnil; | |
db9f0278 JB |
195 | } |
196 | ||
dfcf069d | 197 | void |
d3da34e0 | 198 | init_eval (void) |
db9f0278 JB |
199 | { |
200 | specpdl_ptr = specpdl; | |
201 | catchlist = 0; | |
202 | handlerlist = 0; | |
203 | backtrace_list = 0; | |
204 | Vquit_flag = Qnil; | |
205 | debug_on_next_call = 0; | |
206 | lisp_eval_depth = 0; | |
87e21fbd | 207 | #ifdef DEBUG_GCPRO |
15934ffa | 208 | gcpro_level = 0; |
87e21fbd | 209 | #endif |
be857679 | 210 | /* This is less than the initial value of num_nonmacro_input_events. */ |
b5b911f9 | 211 | when_entered_debugger = -1; |
db9f0278 JB |
212 | } |
213 | ||
9f5903bb RS |
214 | /* unwind-protect function used by call_debugger. */ |
215 | ||
216 | static Lisp_Object | |
d3da34e0 | 217 | restore_stack_limits (Lisp_Object data) |
9f5903bb RS |
218 | { |
219 | max_specpdl_size = XINT (XCAR (data)); | |
220 | max_lisp_eval_depth = XINT (XCDR (data)); | |
538f78c3 | 221 | return Qnil; |
9f5903bb RS |
222 | } |
223 | ||
224 | /* Call the Lisp debugger, giving it argument ARG. */ | |
225 | ||
db9f0278 | 226 | Lisp_Object |
d3da34e0 | 227 | call_debugger (Lisp_Object arg) |
db9f0278 | 228 | { |
3648c842 | 229 | int debug_while_redisplaying; |
aed13378 | 230 | int count = SPECPDL_INDEX (); |
3648c842 | 231 | Lisp_Object val; |
9f5903bb | 232 | int old_max = max_specpdl_size; |
177c0ea7 | 233 | |
9f5903bb RS |
234 | /* Temporarily bump up the stack limits, |
235 | so the debugger won't run out of stack. */ | |
177c0ea7 | 236 | |
9f5903bb RS |
237 | max_specpdl_size += 1; |
238 | record_unwind_protect (restore_stack_limits, | |
239 | Fcons (make_number (old_max), | |
240 | make_number (max_lisp_eval_depth))); | |
241 | max_specpdl_size = old_max; | |
242 | ||
243 | if (lisp_eval_depth + 40 > max_lisp_eval_depth) | |
244 | max_lisp_eval_depth = lisp_eval_depth + 40; | |
245 | ||
246 | if (SPECPDL_INDEX () + 100 > max_specpdl_size) | |
247 | max_specpdl_size = SPECPDL_INDEX () + 100; | |
177c0ea7 | 248 | |
d148e14d | 249 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
250 | if (display_hourglass_p) |
251 | cancel_hourglass (); | |
237c23b0 GM |
252 | #endif |
253 | ||
db9f0278 | 254 | debug_on_next_call = 0; |
be857679 | 255 | when_entered_debugger = num_nonmacro_input_events; |
3648c842 GM |
256 | |
257 | /* Resetting redisplaying_p to 0 makes sure that debug output is | |
258 | displayed if the debugger is invoked during redisplay. */ | |
259 | debug_while_redisplaying = redisplaying_p; | |
260 | redisplaying_p = 0; | |
556d7314 GM |
261 | specbind (intern ("debugger-may-continue"), |
262 | debug_while_redisplaying ? Qnil : Qt); | |
8efb6cc7 | 263 | specbind (Qinhibit_redisplay, Qnil); |
9f5903bb | 264 | specbind (Qdebug_on_error, Qnil); |
9db6f6b4 GM |
265 | |
266 | #if 0 /* Binding this prevents execution of Lisp code during | |
267 | redisplay, which necessarily leads to display problems. */ | |
8efb6cc7 | 268 | specbind (Qinhibit_eval_during_redisplay, Qt); |
9db6f6b4 | 269 | #endif |
177c0ea7 | 270 | |
3648c842 GM |
271 | val = apply1 (Vdebugger, arg); |
272 | ||
273 | /* Interrupting redisplay and resuming it later is not safe under | |
274 | all circumstances. So, when the debugger returns, abort the | |
1b1acc13 | 275 | interrupted redisplay by going back to the top-level. */ |
3648c842 GM |
276 | if (debug_while_redisplaying) |
277 | Ftop_level (); | |
278 | ||
556d7314 | 279 | return unbind_to (count, val); |
db9f0278 JB |
280 | } |
281 | ||
dfcf069d | 282 | void |
d3da34e0 | 283 | do_debug_on_call (Lisp_Object code) |
db9f0278 JB |
284 | { |
285 | debug_on_next_call = 0; | |
286 | backtrace_list->debug_on_exit = 1; | |
287 | call_debugger (Fcons (code, Qnil)); | |
288 | } | |
289 | \f | |
290 | /* NOTE!!! Every function that can call EVAL must protect its args | |
291 | and temporaries from garbage collection while it needs them. | |
292 | The definition of `For' shows what you have to do. */ | |
293 | ||
294 | DEFUN ("or", For, Sor, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
295 | doc: /* Eval args until one of them yields non-nil, then return that value. |
296 | The remaining args are not evalled at all. | |
297 | If all args return nil, return nil. | |
533eb34b | 298 | usage: (or CONDITIONS...) */) |
9dbc9081 | 299 | (args) |
db9f0278 JB |
300 | Lisp_Object args; |
301 | { | |
e509f168 | 302 | register Lisp_Object val = Qnil; |
db9f0278 JB |
303 | struct gcpro gcpro1; |
304 | ||
e509f168 | 305 | GCPRO1 (args); |
db9f0278 | 306 | |
e509f168 | 307 | while (CONSP (args)) |
db9f0278 | 308 | { |
e509f168 | 309 | val = Feval (XCAR (args)); |
265a9e55 | 310 | if (!NILP (val)) |
db9f0278 | 311 | break; |
e509f168 | 312 | args = XCDR (args); |
db9f0278 | 313 | } |
db9f0278 JB |
314 | |
315 | UNGCPRO; | |
316 | return val; | |
317 | } | |
318 | ||
319 | DEFUN ("and", Fand, Sand, 0, UNEVALLED, 0, | |
b8de5714 | 320 | doc: /* Eval args until one of them yields nil, then return nil. |
9dbc9081 PJ |
321 | The remaining args are not evalled at all. |
322 | If no arg yields nil, return the last arg's value. | |
533eb34b | 323 | usage: (and CONDITIONS...) */) |
9dbc9081 | 324 | (args) |
db9f0278 JB |
325 | Lisp_Object args; |
326 | { | |
e509f168 | 327 | register Lisp_Object val = Qt; |
db9f0278 JB |
328 | struct gcpro gcpro1; |
329 | ||
e509f168 | 330 | GCPRO1 (args); |
db9f0278 | 331 | |
e509f168 | 332 | while (CONSP (args)) |
db9f0278 | 333 | { |
e509f168 | 334 | val = Feval (XCAR (args)); |
265a9e55 | 335 | if (NILP (val)) |
db9f0278 | 336 | break; |
e509f168 | 337 | args = XCDR (args); |
db9f0278 | 338 | } |
db9f0278 JB |
339 | |
340 | UNGCPRO; | |
341 | return val; | |
342 | } | |
343 | ||
344 | DEFUN ("if", Fif, Sif, 2, UNEVALLED, 0, | |
b8de5714 | 345 | doc: /* If COND yields non-nil, do THEN, else do ELSE... |
9dbc9081 PJ |
346 | Returns the value of THEN or the value of the last of the ELSE's. |
347 | THEN must be one expression, but ELSE... can be zero or more expressions. | |
348 | If COND yields nil, and there are no ELSE's, the value is nil. | |
7a25dc6d | 349 | usage: (if COND THEN ELSE...) */) |
9dbc9081 | 350 | (args) |
db9f0278 JB |
351 | Lisp_Object args; |
352 | { | |
353 | register Lisp_Object cond; | |
354 | struct gcpro gcpro1; | |
355 | ||
356 | GCPRO1 (args); | |
357 | cond = Feval (Fcar (args)); | |
358 | UNGCPRO; | |
359 | ||
265a9e55 | 360 | if (!NILP (cond)) |
db9f0278 JB |
361 | return Feval (Fcar (Fcdr (args))); |
362 | return Fprogn (Fcdr (Fcdr (args))); | |
363 | } | |
364 | ||
365 | DEFUN ("cond", Fcond, Scond, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
366 | doc: /* Try each clause until one succeeds. |
367 | Each clause looks like (CONDITION BODY...). CONDITION is evaluated | |
368 | and, if the value is non-nil, this clause succeeds: | |
369 | then the expressions in BODY are evaluated and the last one's | |
370 | value is the value of the cond-form. | |
371 | If no clause succeeds, cond returns nil. | |
372 | If a clause has one element, as in (CONDITION), | |
373 | CONDITION's value if non-nil is returned from the cond-form. | |
7a25dc6d | 374 | usage: (cond CLAUSES...) */) |
9dbc9081 | 375 | (args) |
db9f0278 JB |
376 | Lisp_Object args; |
377 | { | |
378 | register Lisp_Object clause, val; | |
379 | struct gcpro gcpro1; | |
380 | ||
381 | val = Qnil; | |
382 | GCPRO1 (args); | |
265a9e55 | 383 | while (!NILP (args)) |
db9f0278 JB |
384 | { |
385 | clause = Fcar (args); | |
386 | val = Feval (Fcar (clause)); | |
265a9e55 | 387 | if (!NILP (val)) |
db9f0278 | 388 | { |
03699b14 KR |
389 | if (!EQ (XCDR (clause), Qnil)) |
390 | val = Fprogn (XCDR (clause)); | |
db9f0278 JB |
391 | break; |
392 | } | |
03699b14 | 393 | args = XCDR (args); |
db9f0278 JB |
394 | } |
395 | UNGCPRO; | |
396 | ||
397 | return val; | |
398 | } | |
399 | ||
400 | DEFUN ("progn", Fprogn, Sprogn, 0, UNEVALLED, 0, | |
9dbc9081 | 401 | doc: /* Eval BODY forms sequentially and return value of last one. |
5b4a1f50 | 402 | usage: (progn BODY...) */) |
9dbc9081 | 403 | (args) |
db9f0278 JB |
404 | Lisp_Object args; |
405 | { | |
e509f168 | 406 | register Lisp_Object val = Qnil; |
db9f0278 JB |
407 | struct gcpro gcpro1; |
408 | ||
e509f168 | 409 | GCPRO1 (args); |
db9f0278 | 410 | |
e509f168 | 411 | while (CONSP (args)) |
db9f0278 | 412 | { |
e509f168 SM |
413 | val = Feval (XCAR (args)); |
414 | args = XCDR (args); | |
db9f0278 | 415 | } |
db9f0278 JB |
416 | |
417 | UNGCPRO; | |
418 | return val; | |
419 | } | |
420 | ||
421 | DEFUN ("prog1", Fprog1, Sprog1, 1, UNEVALLED, 0, | |
bdee2ef3 | 422 | doc: /* Eval FIRST and BODY sequentially; return value from FIRST. |
9dbc9081 PJ |
423 | The value of FIRST is saved during the evaluation of the remaining args, |
424 | whose values are discarded. | |
7a25dc6d | 425 | usage: (prog1 FIRST BODY...) */) |
9dbc9081 | 426 | (args) |
db9f0278 JB |
427 | Lisp_Object args; |
428 | { | |
429 | Lisp_Object val; | |
430 | register Lisp_Object args_left; | |
431 | struct gcpro gcpro1, gcpro2; | |
432 | register int argnum = 0; | |
433 | ||
9ac66b45 | 434 | if (NILP (args)) |
db9f0278 JB |
435 | return Qnil; |
436 | ||
437 | args_left = args; | |
438 | val = Qnil; | |
439 | GCPRO2 (args, val); | |
440 | ||
441 | do | |
442 | { | |
443 | if (!(argnum++)) | |
444 | val = Feval (Fcar (args_left)); | |
445 | else | |
446 | Feval (Fcar (args_left)); | |
447 | args_left = Fcdr (args_left); | |
448 | } | |
265a9e55 | 449 | while (!NILP(args_left)); |
db9f0278 JB |
450 | |
451 | UNGCPRO; | |
452 | return val; | |
453 | } | |
454 | ||
455 | DEFUN ("prog2", Fprog2, Sprog2, 2, UNEVALLED, 0, | |
bdee2ef3 | 456 | doc: /* Eval FORM1, FORM2 and BODY sequentially; return value from FORM2. |
82fc29a1 JB |
457 | The value of FORM2 is saved during the evaluation of the |
458 | remaining args, whose values are discarded. | |
459 | usage: (prog2 FORM1 FORM2 BODY...) */) | |
9dbc9081 | 460 | (args) |
db9f0278 JB |
461 | Lisp_Object args; |
462 | { | |
463 | Lisp_Object val; | |
464 | register Lisp_Object args_left; | |
465 | struct gcpro gcpro1, gcpro2; | |
466 | register int argnum = -1; | |
467 | ||
468 | val = Qnil; | |
469 | ||
87d238ba | 470 | if (NILP (args)) |
db9f0278 JB |
471 | return Qnil; |
472 | ||
473 | args_left = args; | |
474 | val = Qnil; | |
475 | GCPRO2 (args, val); | |
476 | ||
477 | do | |
478 | { | |
479 | if (!(argnum++)) | |
480 | val = Feval (Fcar (args_left)); | |
481 | else | |
482 | Feval (Fcar (args_left)); | |
483 | args_left = Fcdr (args_left); | |
484 | } | |
87d238ba | 485 | while (!NILP (args_left)); |
db9f0278 JB |
486 | |
487 | UNGCPRO; | |
488 | return val; | |
489 | } | |
490 | ||
491 | DEFUN ("setq", Fsetq, Ssetq, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
492 | doc: /* Set each SYM to the value of its VAL. |
493 | The symbols SYM are variables; they are literal (not evaluated). | |
494 | The values VAL are expressions; they are evaluated. | |
495 | Thus, (setq x (1+ y)) sets `x' to the value of `(1+ y)'. | |
496 | The second VAL is not computed until after the first SYM is set, and so on; | |
497 | each VAL can use the new value of variables set earlier in the `setq'. | |
498 | The return value of the `setq' form is the value of the last VAL. | |
819586b2 | 499 | usage: (setq [SYM VAL]...) */) |
9dbc9081 | 500 | (args) |
db9f0278 JB |
501 | Lisp_Object args; |
502 | { | |
503 | register Lisp_Object args_left; | |
504 | register Lisp_Object val, sym; | |
505 | struct gcpro gcpro1; | |
506 | ||
1283140e | 507 | if (NILP (args)) |
db9f0278 JB |
508 | return Qnil; |
509 | ||
510 | args_left = args; | |
511 | GCPRO1 (args); | |
512 | ||
513 | do | |
514 | { | |
515 | val = Feval (Fcar (Fcdr (args_left))); | |
516 | sym = Fcar (args_left); | |
517 | Fset (sym, val); | |
518 | args_left = Fcdr (Fcdr (args_left)); | |
519 | } | |
265a9e55 | 520 | while (!NILP(args_left)); |
db9f0278 JB |
521 | |
522 | UNGCPRO; | |
523 | return val; | |
524 | } | |
177c0ea7 | 525 | |
db9f0278 | 526 | DEFUN ("quote", Fquote, Squote, 1, UNEVALLED, 0, |
9dbc9081 PJ |
527 | doc: /* Return the argument, without evaluating it. `(quote x)' yields `x'. |
528 | usage: (quote ARG) */) | |
529 | (args) | |
db9f0278 JB |
530 | Lisp_Object args; |
531 | { | |
1283140e RS |
532 | if (!NILP (Fcdr (args))) |
533 | xsignal2 (Qwrong_number_of_arguments, Qquote, Flength (args)); | |
db9f0278 JB |
534 | return Fcar (args); |
535 | } | |
177c0ea7 | 536 | |
db9f0278 | 537 | DEFUN ("function", Ffunction, Sfunction, 1, UNEVALLED, 0, |
9dbc9081 PJ |
538 | doc: /* Like `quote', but preferred for objects which are functions. |
539 | In byte compilation, `function' causes its argument to be compiled. | |
540 | `quote' cannot do that. | |
541 | usage: (function ARG) */) | |
542 | (args) | |
db9f0278 JB |
543 | Lisp_Object args; |
544 | { | |
1283140e RS |
545 | if (!NILP (Fcdr (args))) |
546 | xsignal2 (Qwrong_number_of_arguments, Qfunction, Flength (args)); | |
db9f0278 JB |
547 | return Fcar (args); |
548 | } | |
549 | ||
e0f331ab | 550 | |
db9f0278 | 551 | DEFUN ("interactive-p", Finteractive_p, Sinteractive_p, 0, 0, 0, |
84b17ab0 | 552 | doc: /* Return t if the containing function was run directly by user input. |
82fc29a1 JB |
553 | This means that the function was called with `call-interactively' |
554 | \(which includes being called as the binding of a key) | |
84b17ab0 | 555 | and input is currently coming from the keyboard (not a keyboard macro), |
c63df42b RS |
556 | and Emacs is not running in batch mode (`noninteractive' is nil). |
557 | ||
558 | The only known proper use of `interactive-p' is in deciding whether to | |
559 | display a helpful message, or how to display it. If you're thinking | |
560 | of using it for any other purpose, it is quite likely that you're | |
561 | making a mistake. Think: what do you want to do when the command is | |
562 | called from a keyboard macro? | |
563 | ||
84b17ab0 CY |
564 | To test whether your function was called with `call-interactively', |
565 | either (i) add an extra optional argument and give it an `interactive' | |
566 | spec that specifies non-nil unconditionally (such as \"p\"); or (ii) | |
567 | use `called-interactively-p'. */) | |
9dbc9081 | 568 | () |
db9f0278 | 569 | { |
c63df42b | 570 | return (INTERACTIVE && interactive_p (1)) ? Qt : Qnil; |
e0f331ab GM |
571 | } |
572 | ||
573 | ||
9d28c33e | 574 | DEFUN ("called-interactively-p", Fcalled_interactively_p, Scalled_interactively_p, 0, 1, 0, |
84b17ab0 | 575 | doc: /* Return t if the containing function was called by `call-interactively'. |
9d28c33e SM |
576 | If KIND is `interactive', then only return t if the call was made |
577 | interactively by the user, i.e. not in `noninteractive' mode nor | |
578 | when `executing-kbd-macro'. | |
579 | If KIND is `any', on the other hand, it will return t for any kind of | |
580 | interactive call, including being called as the binding of a key, or | |
581 | from a keyboard macro, or in `noninteractive' mode. | |
582 | ||
583 | The only known proper use of `interactive' for KIND is in deciding | |
584 | whether to display a helpful message, or how to display it. If you're | |
585 | thinking of using it for any other purpose, it is quite likely that | |
586 | you're making a mistake. Think: what do you want to do when the | |
587 | command is called from a keyboard macro? | |
84b17ab0 CY |
588 | |
589 | This function is meant for implementing advice and other | |
590 | function-modifying features. Instead of using this, it is sometimes | |
591 | cleaner to give your function an extra optional argument whose | |
592 | `interactive' spec specifies non-nil unconditionally (\"p\" is a good | |
9d28c33e SM |
593 | way to do this), or via (not (or executing-kbd-macro noninteractive)). */) |
594 | (kind) | |
595 | Lisp_Object kind; | |
c63df42b | 596 | { |
9d28c33e SM |
597 | return ((INTERACTIVE || !EQ (kind, intern ("interactive"))) |
598 | && interactive_p (1)) ? Qt : Qnil; | |
c63df42b RS |
599 | } |
600 | ||
601 | ||
602 | /* Return 1 if function in which this appears was called using | |
603 | call-interactively. | |
e0f331ab GM |
604 | |
605 | EXCLUDE_SUBRS_P non-zero means always return 0 if the function | |
606 | called is a built-in. */ | |
607 | ||
608 | int | |
d3da34e0 | 609 | interactive_p (int exclude_subrs_p) |
e0f331ab GM |
610 | { |
611 | struct backtrace *btp; | |
612 | Lisp_Object fun; | |
db9f0278 | 613 | |
db9f0278 | 614 | btp = backtrace_list; |
daa37602 JB |
615 | |
616 | /* If this isn't a byte-compiled function, there may be a frame at | |
e0f331ab | 617 | the top for Finteractive_p. If so, skip it. */ |
a7f96a35 | 618 | fun = Findirect_function (*btp->function, Qnil); |
0b31741c RS |
619 | if (SUBRP (fun) && (XSUBR (fun) == &Sinteractive_p |
620 | || XSUBR (fun) == &Scalled_interactively_p)) | |
db9f0278 | 621 | btp = btp->next; |
daa37602 JB |
622 | |
623 | /* If we're running an Emacs 18-style byte-compiled function, there | |
4402a9ed RS |
624 | may be a frame for Fbytecode at the top level. In any version of |
625 | Emacs there can be Fbytecode frames for subexpressions evaluated | |
626 | inside catch and condition-case. Skip past them. | |
daa37602 | 627 | |
4402a9ed | 628 | If this isn't a byte-compiled function, then we may now be |
daa37602 | 629 | looking at several frames for special forms. Skip past them. */ |
4402a9ed RS |
630 | while (btp |
631 | && (EQ (*btp->function, Qbytecode) | |
632 | || btp->nargs == UNEVALLED)) | |
a6e3fa71 JB |
633 | btp = btp->next; |
634 | ||
daa37602 JB |
635 | /* btp now points at the frame of the innermost function that isn't |
636 | a special form, ignoring frames for Finteractive_p and/or | |
637 | Fbytecode at the top. If this frame is for a built-in function | |
638 | (such as load or eval-region) return nil. */ | |
a7f96a35 | 639 | fun = Findirect_function (*btp->function, Qnil); |
e0f331ab GM |
640 | if (exclude_subrs_p && SUBRP (fun)) |
641 | return 0; | |
177c0ea7 | 642 | |
db9f0278 JB |
643 | /* btp points to the frame of a Lisp function that called interactive-p. |
644 | Return t if that function was called interactively. */ | |
645 | if (btp && btp->next && EQ (*btp->next->function, Qcall_interactively)) | |
e0f331ab GM |
646 | return 1; |
647 | return 0; | |
db9f0278 JB |
648 | } |
649 | ||
e0f331ab | 650 | |
db9f0278 | 651 | DEFUN ("defun", Fdefun, Sdefun, 2, UNEVALLED, 0, |
9dbc9081 PJ |
652 | doc: /* Define NAME as a function. |
653 | The definition is (lambda ARGLIST [DOCSTRING] BODY...). | |
654 | See also the function `interactive'. | |
7a25dc6d | 655 | usage: (defun NAME ARGLIST [DOCSTRING] BODY...) */) |
9dbc9081 | 656 | (args) |
db9f0278 JB |
657 | Lisp_Object args; |
658 | { | |
659 | register Lisp_Object fn_name; | |
660 | register Lisp_Object defn; | |
661 | ||
662 | fn_name = Fcar (args); | |
6992a868 | 663 | CHECK_SYMBOL (fn_name); |
db9f0278 | 664 | defn = Fcons (Qlambda, Fcdr (args)); |
265a9e55 | 665 | if (!NILP (Vpurify_flag)) |
db9f0278 | 666 | defn = Fpurecopy (defn); |
f58e9f8c RS |
667 | if (CONSP (XSYMBOL (fn_name)->function) |
668 | && EQ (XCAR (XSYMBOL (fn_name)->function), Qautoload)) | |
669 | LOADHIST_ATTACH (Fcons (Qt, fn_name)); | |
db9f0278 | 670 | Ffset (fn_name, defn); |
6fd797f5 | 671 | LOADHIST_ATTACH (Fcons (Qdefun, fn_name)); |
db9f0278 JB |
672 | return fn_name; |
673 | } | |
674 | ||
675 | DEFUN ("defmacro", Fdefmacro, Sdefmacro, 2, UNEVALLED, 0, | |
9dbc9081 | 676 | doc: /* Define NAME as a macro. |
0654d6e3 RS |
677 | The actual definition looks like |
678 | (macro lambda ARGLIST [DOCSTRING] [DECL] BODY...). | |
9dbc9081 PJ |
679 | When the macro is called, as in (NAME ARGS...), |
680 | the function (lambda ARGLIST BODY...) is applied to | |
681 | the list ARGS... as it appears in the expression, | |
682 | and the result should be a form to be evaluated instead of the original. | |
0654d6e3 RS |
683 | |
684 | DECL is a declaration, optional, which can specify how to indent | |
4ba50634 JPW |
685 | calls to this macro, how Edebug should handle it, and which argument |
686 | should be treated as documentation. It looks like this: | |
0654d6e3 RS |
687 | (declare SPECS...) |
688 | The elements can look like this: | |
689 | (indent INDENT) | |
690 | Set NAME's `lisp-indent-function' property to INDENT. | |
691 | ||
e509f168 | 692 | (debug DEBUG) |
0654d6e3 | 693 | Set NAME's `edebug-form-spec' property to DEBUG. (This is |
7d5c86e5 | 694 | equivalent to writing a `def-edebug-spec' for the macro.) |
4ba50634 JPW |
695 | |
696 | (doc-string ELT) | |
697 | Set NAME's `doc-string-elt' property to ELT. | |
698 | ||
0654d6e3 | 699 | usage: (defmacro NAME ARGLIST [DOCSTRING] [DECL] BODY...) */) |
9dbc9081 | 700 | (args) |
db9f0278 JB |
701 | Lisp_Object args; |
702 | { | |
703 | register Lisp_Object fn_name; | |
704 | register Lisp_Object defn; | |
d6edd563 | 705 | Lisp_Object lambda_list, doc, tail; |
db9f0278 JB |
706 | |
707 | fn_name = Fcar (args); | |
8e975df9 | 708 | CHECK_SYMBOL (fn_name); |
d6edd563 GM |
709 | lambda_list = Fcar (Fcdr (args)); |
710 | tail = Fcdr (Fcdr (args)); | |
711 | ||
712 | doc = Qnil; | |
713 | if (STRINGP (Fcar (tail))) | |
714 | { | |
e509f168 SM |
715 | doc = XCAR (tail); |
716 | tail = XCDR (tail); | |
d6edd563 GM |
717 | } |
718 | ||
719 | while (CONSP (Fcar (tail)) | |
720 | && EQ (Fcar (Fcar (tail)), Qdeclare)) | |
721 | { | |
722 | if (!NILP (Vmacro_declaration_function)) | |
723 | { | |
724 | struct gcpro gcpro1; | |
725 | GCPRO1 (args); | |
726 | call2 (Vmacro_declaration_function, fn_name, Fcar (tail)); | |
727 | UNGCPRO; | |
728 | } | |
177c0ea7 | 729 | |
d6edd563 GM |
730 | tail = Fcdr (tail); |
731 | } | |
732 | ||
733 | if (NILP (doc)) | |
734 | tail = Fcons (lambda_list, tail); | |
735 | else | |
736 | tail = Fcons (lambda_list, Fcons (doc, tail)); | |
737 | defn = Fcons (Qmacro, Fcons (Qlambda, tail)); | |
177c0ea7 | 738 | |
265a9e55 | 739 | if (!NILP (Vpurify_flag)) |
db9f0278 | 740 | defn = Fpurecopy (defn); |
f58e9f8c RS |
741 | if (CONSP (XSYMBOL (fn_name)->function) |
742 | && EQ (XCAR (XSYMBOL (fn_name)->function), Qautoload)) | |
743 | LOADHIST_ATTACH (Fcons (Qt, fn_name)); | |
db9f0278 | 744 | Ffset (fn_name, defn); |
6fd797f5 | 745 | LOADHIST_ATTACH (Fcons (Qdefun, fn_name)); |
db9f0278 JB |
746 | return fn_name; |
747 | } | |
748 | ||
19cebf5a | 749 | |
1848d15d | 750 | DEFUN ("defvaralias", Fdefvaralias, Sdefvaralias, 2, 3, 0, |
4a9308b8 | 751 | doc: /* Make NEW-ALIAS a variable alias for symbol BASE-VARIABLE. |
e102f0d8 | 752 | Aliased variables always have the same value; setting one sets the other. |
4a9308b8 | 753 | Third arg DOCSTRING, if non-nil, is documentation for NEW-ALIAS. If it is |
dd60787c GM |
754 | omitted or nil, NEW-ALIAS gets the documentation string of BASE-VARIABLE, |
755 | or of the variable at the end of the chain of aliases, if BASE-VARIABLE is | |
756 | itself an alias. If NEW-ALIAS is bound, and BASE-VARIABLE is not, | |
757 | then the value of BASE-VARIABLE is set to that of NEW-ALIAS. | |
4a9308b8 JB |
758 | The return value is BASE-VARIABLE. */) |
759 | (new_alias, base_variable, docstring) | |
760 | Lisp_Object new_alias, base_variable, docstring; | |
19cebf5a GM |
761 | { |
762 | struct Lisp_Symbol *sym; | |
1848d15d | 763 | |
4a9308b8 JB |
764 | CHECK_SYMBOL (new_alias); |
765 | CHECK_SYMBOL (base_variable); | |
19cebf5a | 766 | |
4a9308b8 | 767 | sym = XSYMBOL (new_alias); |
ce5b453a SM |
768 | |
769 | if (sym->constant) | |
178f2507 SM |
770 | /* Not sure why, but why not? */ |
771 | error ("Cannot make a constant an alias"); | |
ce5b453a SM |
772 | |
773 | switch (sym->redirect) | |
774 | { | |
775 | case SYMBOL_FORWARDED: | |
776 | error ("Cannot make an internal variable an alias"); | |
777 | case SYMBOL_LOCALIZED: | |
778 | error ("Don't know how to make a localized variable an alias"); | |
779 | } | |
780 | ||
dd60787c | 781 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg00834.html |
ce5b453a SM |
782 | If n_a is bound, but b_v is not, set the value of b_v to n_a, |
783 | so that old-code that affects n_a before the aliasing is setup | |
784 | still works. */ | |
785 | if (NILP (Fboundp (base_variable))) | |
94b612ad | 786 | set_internal (base_variable, find_symbol_value (new_alias), Qnil, 1); |
ce5b453a SM |
787 | |
788 | { | |
789 | struct specbinding *p; | |
790 | ||
791 | for (p = specpdl_ptr - 1; p >= specpdl; p--) | |
792 | if (p->func == NULL | |
793 | && (EQ (new_alias, | |
794 | CONSP (p->symbol) ? XCAR (p->symbol) : p->symbol))) | |
795 | error ("Don't know how to make a let-bound variable an alias"); | |
796 | } | |
797 | ||
798 | sym->redirect = SYMBOL_VARALIAS; | |
799 | SET_SYMBOL_ALIAS (sym, XSYMBOL (base_variable)); | |
4a9308b8 JB |
800 | sym->constant = SYMBOL_CONSTANT_P (base_variable); |
801 | LOADHIST_ATTACH (new_alias); | |
ce5b453a SM |
802 | /* Even if docstring is nil: remove old docstring. */ |
803 | Fput (new_alias, Qvariable_documentation, docstring); | |
1848d15d | 804 | |
4a9308b8 | 805 | return base_variable; |
19cebf5a GM |
806 | } |
807 | ||
808 | ||
db9f0278 | 809 | DEFUN ("defvar", Fdefvar, Sdefvar, 1, UNEVALLED, 0, |
29357847 | 810 | doc: /* Define SYMBOL as a variable, and return SYMBOL. |
9dbc9081 PJ |
811 | You are not required to define a variable in order to use it, |
812 | but the definition can supply documentation and an initial value | |
813 | in a way that tags can recognize. | |
814 | ||
815 | INITVALUE is evaluated, and used to set SYMBOL, only if SYMBOL's value is void. | |
816 | If SYMBOL is buffer-local, its default value is what is set; | |
817 | buffer-local values are not affected. | |
818 | INITVALUE and DOCSTRING are optional. | |
819 | If DOCSTRING starts with *, this variable is identified as a user option. | |
820 | This means that M-x set-variable recognizes it. | |
821 | See also `user-variable-p'. | |
822 | If INITVALUE is missing, SYMBOL's value is not set. | |
733f68b6 LT |
823 | |
824 | If SYMBOL has a local binding, then this form affects the local | |
825 | binding. This is usually not what you want. Thus, if you need to | |
826 | load a file defining variables, with this form or with `defconst' or | |
827 | `defcustom', you should always load that file _outside_ any bindings | |
828 | for these variables. \(`defconst' and `defcustom' behave similarly in | |
829 | this respect.) | |
2df5238c | 830 | usage: (defvar SYMBOL &optional INITVALUE DOCSTRING) */) |
9dbc9081 | 831 | (args) |
db9f0278 JB |
832 | Lisp_Object args; |
833 | { | |
a42ba017 | 834 | register Lisp_Object sym, tem, tail; |
db9f0278 JB |
835 | |
836 | sym = Fcar (args); | |
a42ba017 RS |
837 | tail = Fcdr (args); |
838 | if (!NILP (Fcdr (Fcdr (tail)))) | |
921baa95 | 839 | error ("Too many arguments"); |
a42ba017 | 840 | |
33568849 | 841 | tem = Fdefault_boundp (sym); |
a42ba017 | 842 | if (!NILP (tail)) |
db9f0278 | 843 | { |
1c9916a1 SM |
844 | if (SYMBOL_CONSTANT_P (sym)) |
845 | { | |
846 | /* For upward compatibility, allow (defvar :foo (quote :foo)). */ | |
847 | Lisp_Object tem = Fcar (tail); | |
848 | if (! (CONSP (tem) | |
849 | && EQ (XCAR (tem), Qquote) | |
850 | && CONSP (XCDR (tem)) | |
851 | && EQ (XCAR (XCDR (tem)), sym))) | |
852 | error ("Constant symbol `%s' specified in defvar", | |
853 | SDATA (SYMBOL_NAME (sym))); | |
854 | } | |
855 | ||
265a9e55 | 856 | if (NILP (tem)) |
33568849 | 857 | Fset_default (sym, Feval (Fcar (tail))); |
d0bce91e SM |
858 | else |
859 | { /* Check if there is really a global binding rather than just a let | |
860 | binding that shadows the global unboundness of the var. */ | |
b28d0d9a | 861 | volatile struct specbinding *pdl = specpdl_ptr; |
d0bce91e SM |
862 | while (--pdl >= specpdl) |
863 | { | |
864 | if (EQ (pdl->symbol, sym) && !pdl->func | |
865 | && EQ (pdl->old_value, Qunbound)) | |
866 | { | |
867 | message_with_string ("Warning: defvar ignored because %s is let-bound", | |
868 | SYMBOL_NAME (sym), 1); | |
869 | break; | |
870 | } | |
871 | } | |
872 | } | |
33568849 | 873 | tail = Fcdr (tail); |
e509f168 SM |
874 | tem = Fcar (tail); |
875 | if (!NILP (tem)) | |
33568849 | 876 | { |
33568849 SM |
877 | if (!NILP (Vpurify_flag)) |
878 | tem = Fpurecopy (tem); | |
879 | Fput (sym, Qvariable_documentation, tem); | |
880 | } | |
6fd797f5 | 881 | LOADHIST_ATTACH (sym); |
db9f0278 | 882 | } |
33568849 | 883 | else |
d7c1d0fc RS |
884 | /* Simple (defvar <var>) should not count as a definition at all. |
885 | It could get in the way of other definitions, and unloading this | |
886 | package could try to make the variable unbound. */ | |
addf35fd AS |
887 | ; |
888 | ||
db9f0278 JB |
889 | return sym; |
890 | } | |
891 | ||
892 | DEFUN ("defconst", Fdefconst, Sdefconst, 2, UNEVALLED, 0, | |
9dbc9081 PJ |
893 | doc: /* Define SYMBOL as a constant variable. |
894 | The intent is that neither programs nor users should ever change this value. | |
895 | Always sets the value of SYMBOL to the result of evalling INITVALUE. | |
896 | If SYMBOL is buffer-local, its default value is what is set; | |
897 | buffer-local values are not affected. | |
898 | DOCSTRING is optional. | |
733f68b6 LT |
899 | |
900 | If SYMBOL has a local binding, then this form sets the local binding's | |
901 | value. However, you should normally not make local bindings for | |
902 | variables defined with this form. | |
7a25dc6d | 903 | usage: (defconst SYMBOL INITVALUE [DOCSTRING]) */) |
9dbc9081 | 904 | (args) |
db9f0278 JB |
905 | Lisp_Object args; |
906 | { | |
907 | register Lisp_Object sym, tem; | |
908 | ||
909 | sym = Fcar (args); | |
a42ba017 | 910 | if (!NILP (Fcdr (Fcdr (Fcdr (args))))) |
921baa95 | 911 | error ("Too many arguments"); |
a42ba017 | 912 | |
1182a7cb DL |
913 | tem = Feval (Fcar (Fcdr (args))); |
914 | if (!NILP (Vpurify_flag)) | |
915 | tem = Fpurecopy (tem); | |
916 | Fset_default (sym, tem); | |
db9f0278 | 917 | tem = Fcar (Fcdr (Fcdr (args))); |
265a9e55 | 918 | if (!NILP (tem)) |
db9f0278 | 919 | { |
265a9e55 | 920 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
921 | tem = Fpurecopy (tem); |
922 | Fput (sym, Qvariable_documentation, tem); | |
923 | } | |
873759d5 | 924 | Fput (sym, Qrisky_local_variable, Qt); |
6fd797f5 | 925 | LOADHIST_ATTACH (sym); |
db9f0278 JB |
926 | return sym; |
927 | } | |
928 | ||
606cdb89 JB |
929 | /* Error handler used in Fuser_variable_p. */ |
930 | static Lisp_Object | |
d3da34e0 | 931 | user_variable_p_eh (Lisp_Object ignore) |
606cdb89 JB |
932 | { |
933 | return Qnil; | |
934 | } | |
935 | ||
40a69fac SM |
936 | static Lisp_Object |
937 | lisp_indirect_variable (Lisp_Object sym) | |
938 | { | |
939 | XSETSYMBOL (sym, indirect_variable (XSYMBOL (sym))); | |
940 | return sym; | |
941 | } | |
942 | ||
db9f0278 | 943 | DEFUN ("user-variable-p", Fuser_variable_p, Suser_variable_p, 1, 1, 0, |
606cdb89 | 944 | doc: /* Return t if VARIABLE is intended to be set and modified by users. |
9dbc9081 | 945 | \(The alternative is a variable used internally in a Lisp program.) |
606cdb89 JB |
946 | A variable is a user variable if |
947 | \(1) the first character of its documentation is `*', or | |
948 | \(2) it is customizable (its property list contains a non-nil value | |
949 | of `standard-value' or `custom-autoload'), or | |
950 | \(3) it is an alias for another user variable. | |
951 | Return nil if VARIABLE is an alias and there is a loop in the | |
952 | chain of symbols. */) | |
9dbc9081 | 953 | (variable) |
db9f0278 JB |
954 | Lisp_Object variable; |
955 | { | |
956 | Lisp_Object documentation; | |
177c0ea7 | 957 | |
5e78e475 RS |
958 | if (!SYMBOLP (variable)) |
959 | return Qnil; | |
960 | ||
606cdb89 | 961 | /* If indirect and there's an alias loop, don't check anything else. */ |
ce5b453a | 962 | if (XSYMBOL (variable)->redirect == SYMBOL_VARALIAS |
40a69fac | 963 | && NILP (internal_condition_case_1 (lisp_indirect_variable, variable, |
606cdb89 JB |
964 | Qt, user_variable_p_eh))) |
965 | return Qnil; | |
966 | ||
967 | while (1) | |
968 | { | |
969 | documentation = Fget (variable, Qvariable_documentation); | |
970 | if (INTEGERP (documentation) && XINT (documentation) < 0) | |
971 | return Qt; | |
972 | if (STRINGP (documentation) | |
973 | && ((unsigned char) SREF (documentation, 0) == '*')) | |
974 | return Qt; | |
975 | /* If it is (STRING . INTEGER), a negative integer means a user variable. */ | |
976 | if (CONSP (documentation) | |
977 | && STRINGP (XCAR (documentation)) | |
978 | && INTEGERP (XCDR (documentation)) | |
979 | && XINT (XCDR (documentation)) < 0) | |
980 | return Qt; | |
981 | /* Customizable? See `custom-variable-p'. */ | |
982 | if ((!NILP (Fget (variable, intern ("standard-value")))) | |
983 | || (!NILP (Fget (variable, intern ("custom-autoload"))))) | |
984 | return Qt; | |
985 | ||
ce5b453a | 986 | if (!(XSYMBOL (variable)->redirect == SYMBOL_VARALIAS)) |
606cdb89 JB |
987 | return Qnil; |
988 | ||
989 | /* An indirect variable? Let's follow the chain. */ | |
ce5b453a | 990 | XSETSYMBOL (variable, SYMBOL_ALIAS (XSYMBOL (variable))); |
606cdb89 | 991 | } |
177c0ea7 | 992 | } |
db9f0278 JB |
993 | \f |
994 | DEFUN ("let*", FletX, SletX, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
995 | doc: /* Bind variables according to VARLIST then eval BODY. |
996 | The value of the last form in BODY is returned. | |
997 | Each element of VARLIST is a symbol (which is bound to nil) | |
998 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
999 | Each VALUEFORM can refer to the symbols already bound by this VARLIST. | |
7a25dc6d | 1000 | usage: (let* VARLIST BODY...) */) |
9dbc9081 | 1001 | (args) |
db9f0278 JB |
1002 | Lisp_Object args; |
1003 | { | |
1004 | Lisp_Object varlist, val, elt; | |
aed13378 | 1005 | int count = SPECPDL_INDEX (); |
db9f0278 JB |
1006 | struct gcpro gcpro1, gcpro2, gcpro3; |
1007 | ||
1008 | GCPRO3 (args, elt, varlist); | |
1009 | ||
1010 | varlist = Fcar (args); | |
265a9e55 | 1011 | while (!NILP (varlist)) |
db9f0278 JB |
1012 | { |
1013 | QUIT; | |
1014 | elt = Fcar (varlist); | |
90165123 | 1015 | if (SYMBOLP (elt)) |
db9f0278 | 1016 | specbind (elt, Qnil); |
08564963 | 1017 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 1018 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
1019 | else |
1020 | { | |
1021 | val = Feval (Fcar (Fcdr (elt))); | |
1022 | specbind (Fcar (elt), val); | |
1023 | } | |
1024 | varlist = Fcdr (varlist); | |
1025 | } | |
1026 | UNGCPRO; | |
1027 | val = Fprogn (Fcdr (args)); | |
1028 | return unbind_to (count, val); | |
1029 | } | |
1030 | ||
1031 | DEFUN ("let", Flet, Slet, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1032 | doc: /* Bind variables according to VARLIST then eval BODY. |
1033 | The value of the last form in BODY is returned. | |
1034 | Each element of VARLIST is a symbol (which is bound to nil) | |
1035 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
1036 | All the VALUEFORMs are evalled before any symbols are bound. | |
7a25dc6d | 1037 | usage: (let VARLIST BODY...) */) |
9dbc9081 | 1038 | (args) |
db9f0278 JB |
1039 | Lisp_Object args; |
1040 | { | |
1041 | Lisp_Object *temps, tem; | |
1042 | register Lisp_Object elt, varlist; | |
aed13378 | 1043 | int count = SPECPDL_INDEX (); |
db9f0278 JB |
1044 | register int argnum; |
1045 | struct gcpro gcpro1, gcpro2; | |
1046 | ||
1047 | varlist = Fcar (args); | |
1048 | ||
1049 | /* Make space to hold the values to give the bound variables */ | |
1050 | elt = Flength (varlist); | |
1051 | temps = (Lisp_Object *) alloca (XFASTINT (elt) * sizeof (Lisp_Object)); | |
1052 | ||
1053 | /* Compute the values and store them in `temps' */ | |
1054 | ||
1055 | GCPRO2 (args, *temps); | |
1056 | gcpro2.nvars = 0; | |
1057 | ||
67ee9f6e | 1058 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 JB |
1059 | { |
1060 | QUIT; | |
67ee9f6e | 1061 | elt = XCAR (varlist); |
90165123 | 1062 | if (SYMBOLP (elt)) |
db9f0278 | 1063 | temps [argnum++] = Qnil; |
08564963 | 1064 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 1065 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
1066 | else |
1067 | temps [argnum++] = Feval (Fcar (Fcdr (elt))); | |
1068 | gcpro2.nvars = argnum; | |
1069 | } | |
1070 | UNGCPRO; | |
1071 | ||
1072 | varlist = Fcar (args); | |
67ee9f6e | 1073 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 | 1074 | { |
67ee9f6e | 1075 | elt = XCAR (varlist); |
db9f0278 | 1076 | tem = temps[argnum++]; |
90165123 | 1077 | if (SYMBOLP (elt)) |
db9f0278 JB |
1078 | specbind (elt, tem); |
1079 | else | |
1080 | specbind (Fcar (elt), tem); | |
1081 | } | |
1082 | ||
1083 | elt = Fprogn (Fcdr (args)); | |
1084 | return unbind_to (count, elt); | |
1085 | } | |
1086 | ||
1087 | DEFUN ("while", Fwhile, Swhile, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1088 | doc: /* If TEST yields non-nil, eval BODY... and repeat. |
1089 | The order of execution is thus TEST, BODY, TEST, BODY and so on | |
1090 | until TEST returns nil. | |
7a25dc6d | 1091 | usage: (while TEST BODY...) */) |
9dbc9081 | 1092 | (args) |
db9f0278 JB |
1093 | Lisp_Object args; |
1094 | { | |
2b9bde76 | 1095 | Lisp_Object test, body; |
db9f0278 JB |
1096 | struct gcpro gcpro1, gcpro2; |
1097 | ||
1098 | GCPRO2 (test, body); | |
1099 | ||
1100 | test = Fcar (args); | |
1101 | body = Fcdr (args); | |
2b9bde76 | 1102 | while (!NILP (Feval (test))) |
db9f0278 JB |
1103 | { |
1104 | QUIT; | |
1105 | Fprogn (body); | |
1106 | } | |
1107 | ||
1108 | UNGCPRO; | |
1109 | return Qnil; | |
1110 | } | |
1111 | ||
1112 | DEFUN ("macroexpand", Fmacroexpand, Smacroexpand, 1, 2, 0, | |
9dbc9081 PJ |
1113 | doc: /* Return result of expanding macros at top level of FORM. |
1114 | If FORM is not a macro call, it is returned unchanged. | |
1115 | Otherwise, the macro is expanded and the expansion is considered | |
1116 | in place of FORM. When a non-macro-call results, it is returned. | |
1117 | ||
1118 | The second optional arg ENVIRONMENT specifies an environment of macro | |
1119 | definitions to shadow the loaded ones for use in file byte-compilation. */) | |
1120 | (form, environment) | |
2e267a2e | 1121 | Lisp_Object form; |
79e8bfbf | 1122 | Lisp_Object environment; |
db9f0278 | 1123 | { |
23d6b5a6 | 1124 | /* With cleanups from Hallvard Furuseth. */ |
db9f0278 JB |
1125 | register Lisp_Object expander, sym, def, tem; |
1126 | ||
1127 | while (1) | |
1128 | { | |
1129 | /* Come back here each time we expand a macro call, | |
1130 | in case it expands into another macro call. */ | |
90165123 | 1131 | if (!CONSP (form)) |
db9f0278 | 1132 | break; |
23d6b5a6 | 1133 | /* Set SYM, give DEF and TEM right values in case SYM is not a symbol. */ |
03699b14 | 1134 | def = sym = XCAR (form); |
23d6b5a6 | 1135 | tem = Qnil; |
db9f0278 JB |
1136 | /* Trace symbols aliases to other symbols |
1137 | until we get a symbol that is not an alias. */ | |
90165123 | 1138 | while (SYMBOLP (def)) |
db9f0278 JB |
1139 | { |
1140 | QUIT; | |
23d6b5a6 | 1141 | sym = def; |
79e8bfbf | 1142 | tem = Fassq (sym, environment); |
265a9e55 | 1143 | if (NILP (tem)) |
db9f0278 JB |
1144 | { |
1145 | def = XSYMBOL (sym)->function; | |
23d6b5a6 JB |
1146 | if (!EQ (def, Qunbound)) |
1147 | continue; | |
db9f0278 | 1148 | } |
23d6b5a6 | 1149 | break; |
db9f0278 | 1150 | } |
79e8bfbf | 1151 | /* Right now TEM is the result from SYM in ENVIRONMENT, |
db9f0278 | 1152 | and if TEM is nil then DEF is SYM's function definition. */ |
265a9e55 | 1153 | if (NILP (tem)) |
db9f0278 | 1154 | { |
79e8bfbf | 1155 | /* SYM is not mentioned in ENVIRONMENT. |
db9f0278 | 1156 | Look at its function definition. */ |
90165123 | 1157 | if (EQ (def, Qunbound) || !CONSP (def)) |
db9f0278 JB |
1158 | /* Not defined or definition not suitable */ |
1159 | break; | |
03699b14 | 1160 | if (EQ (XCAR (def), Qautoload)) |
db9f0278 JB |
1161 | { |
1162 | /* Autoloading function: will it be a macro when loaded? */ | |
ee9ee63c | 1163 | tem = Fnth (make_number (4), def); |
47ccd8b6 | 1164 | if (EQ (tem, Qt) || EQ (tem, Qmacro)) |
ee9ee63c JB |
1165 | /* Yes, load it and try again. */ |
1166 | { | |
ca20916b RS |
1167 | struct gcpro gcpro1; |
1168 | GCPRO1 (form); | |
ee9ee63c | 1169 | do_autoload (def, sym); |
ca20916b | 1170 | UNGCPRO; |
ee9ee63c JB |
1171 | continue; |
1172 | } | |
1173 | else | |
db9f0278 | 1174 | break; |
db9f0278 | 1175 | } |
03699b14 | 1176 | else if (!EQ (XCAR (def), Qmacro)) |
db9f0278 | 1177 | break; |
03699b14 | 1178 | else expander = XCDR (def); |
db9f0278 JB |
1179 | } |
1180 | else | |
1181 | { | |
03699b14 | 1182 | expander = XCDR (tem); |
265a9e55 | 1183 | if (NILP (expander)) |
db9f0278 JB |
1184 | break; |
1185 | } | |
03699b14 | 1186 | form = apply1 (expander, XCDR (form)); |
db9f0278 JB |
1187 | } |
1188 | return form; | |
1189 | } | |
1190 | \f | |
1191 | DEFUN ("catch", Fcatch, Scatch, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1192 | doc: /* Eval BODY allowing nonlocal exits using `throw'. |
1193 | TAG is evalled to get the tag to use; it must not be nil. | |
1194 | ||
1195 | Then the BODY is executed. | |
1d632ccf | 1196 | Within BODY, a call to `throw' with the same TAG exits BODY and this `catch'. |
9dbc9081 PJ |
1197 | If no throw happens, `catch' returns the value of the last BODY form. |
1198 | If a throw happens, it specifies the value to return from `catch'. | |
7a25dc6d | 1199 | usage: (catch TAG BODY...) */) |
9dbc9081 | 1200 | (args) |
db9f0278 JB |
1201 | Lisp_Object args; |
1202 | { | |
1203 | register Lisp_Object tag; | |
1204 | struct gcpro gcpro1; | |
1205 | ||
1206 | GCPRO1 (args); | |
1207 | tag = Feval (Fcar (args)); | |
1208 | UNGCPRO; | |
1209 | return internal_catch (tag, Fprogn, Fcdr (args)); | |
1210 | } | |
1211 | ||
1212 | /* Set up a catch, then call C function FUNC on argument ARG. | |
1213 | FUNC should return a Lisp_Object. | |
1214 | This is how catches are done from within C code. */ | |
1215 | ||
1216 | Lisp_Object | |
d3da34e0 | 1217 | internal_catch (Lisp_Object tag, Lisp_Object (*func) (Lisp_Object), Lisp_Object arg) |
db9f0278 JB |
1218 | { |
1219 | /* This structure is made part of the chain `catchlist'. */ | |
1220 | struct catchtag c; | |
1221 | ||
1222 | /* Fill in the components of c, and put it on the list. */ | |
1223 | c.next = catchlist; | |
1224 | c.tag = tag; | |
1225 | c.val = Qnil; | |
1226 | c.backlist = backtrace_list; | |
1227 | c.handlerlist = handlerlist; | |
1228 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1229 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1230 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1231 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1232 | c.gcpro = gcprolist; |
bcf28080 | 1233 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1234 | catchlist = &c; |
1235 | ||
1236 | /* Call FUNC. */ | |
1237 | if (! _setjmp (c.jmp)) | |
1238 | c.val = (*func) (arg); | |
1239 | ||
1240 | /* Throw works by a longjmp that comes right here. */ | |
1241 | catchlist = c.next; | |
1242 | return c.val; | |
1243 | } | |
1244 | ||
ba410f40 JB |
1245 | /* Unwind the specbind, catch, and handler stacks back to CATCH, and |
1246 | jump to that CATCH, returning VALUE as the value of that catch. | |
db9f0278 | 1247 | |
ba410f40 JB |
1248 | This is the guts Fthrow and Fsignal; they differ only in the way |
1249 | they choose the catch tag to throw to. A catch tag for a | |
1250 | condition-case form has a TAG of Qnil. | |
db9f0278 | 1251 | |
ba410f40 JB |
1252 | Before each catch is discarded, unbind all special bindings and |
1253 | execute all unwind-protect clauses made above that catch. Unwind | |
1254 | the handler stack as we go, so that the proper handlers are in | |
1255 | effect for each unwind-protect clause we run. At the end, restore | |
1256 | some static info saved in CATCH, and longjmp to the location | |
1257 | specified in the | |
1258 | ||
1259 | This is used for correct unwinding in Fthrow and Fsignal. */ | |
db9f0278 JB |
1260 | |
1261 | static void | |
d3da34e0 | 1262 | unwind_to_catch (struct catchtag *catch, Lisp_Object value) |
db9f0278 JB |
1263 | { |
1264 | register int last_time; | |
1265 | ||
ba410f40 JB |
1266 | /* Save the value in the tag. */ |
1267 | catch->val = value; | |
1268 | ||
0b31741c | 1269 | /* Restore certain special C variables. */ |
1cdc3155 | 1270 | set_poll_suppress_count (catch->poll_suppress_count); |
c1788fbc | 1271 | UNBLOCK_INPUT_TO (catch->interrupt_input_blocked); |
0b31741c | 1272 | handling_signal = 0; |
69bbd6bd | 1273 | immediate_quit = 0; |
82da7701 | 1274 | |
db9f0278 JB |
1275 | do |
1276 | { | |
1277 | last_time = catchlist == catch; | |
82da7701 JB |
1278 | |
1279 | /* Unwind the specpdl stack, and then restore the proper set of | |
1280 | handlers. */ | |
db9f0278 JB |
1281 | unbind_to (catchlist->pdlcount, Qnil); |
1282 | handlerlist = catchlist->handlerlist; | |
1283 | catchlist = catchlist->next; | |
1284 | } | |
1285 | while (! last_time); | |
1286 | ||
a2a103bb | 1287 | #if HAVE_X_WINDOWS |
88019a63 RS |
1288 | /* If x_catch_errors was done, turn it off now. |
1289 | (First we give unbind_to a chance to do that.) */ | |
e6aee454 KL |
1290 | #if 0 /* This would disable x_catch_errors after x_connection_closed. |
1291 | * The catch must remain in effect during that delicate | |
1292 | * state. --lorentey */ | |
88019a63 | 1293 | x_fully_uncatch_errors (); |
e6aee454 | 1294 | #endif |
a2a103bb | 1295 | #endif |
88019a63 | 1296 | |
bcf28080 | 1297 | byte_stack_list = catch->byte_stack; |
db9f0278 | 1298 | gcprolist = catch->gcpro; |
15934ffa RS |
1299 | #ifdef DEBUG_GCPRO |
1300 | if (gcprolist != 0) | |
1301 | gcpro_level = gcprolist->level + 1; | |
1302 | else | |
1303 | gcpro_level = 0; | |
1304 | #endif | |
db9f0278 JB |
1305 | backtrace_list = catch->backlist; |
1306 | lisp_eval_depth = catch->lisp_eval_depth; | |
177c0ea7 | 1307 | |
ba410f40 | 1308 | _longjmp (catch->jmp, 1); |
db9f0278 JB |
1309 | } |
1310 | ||
1311 | DEFUN ("throw", Fthrow, Sthrow, 2, 2, 0, | |
9dbc9081 PJ |
1312 | doc: /* Throw to the catch for TAG and return VALUE from it. |
1313 | Both TAG and VALUE are evalled. */) | |
1314 | (tag, value) | |
79e8bfbf | 1315 | register Lisp_Object tag, value; |
db9f0278 JB |
1316 | { |
1317 | register struct catchtag *c; | |
1318 | ||
8788120f KS |
1319 | if (!NILP (tag)) |
1320 | for (c = catchlist; c; c = c->next) | |
1321 | { | |
1322 | if (EQ (c->tag, tag)) | |
1323 | unwind_to_catch (c, value); | |
1324 | } | |
734d55a2 | 1325 | xsignal2 (Qno_catch, tag, value); |
db9f0278 JB |
1326 | } |
1327 | ||
1328 | ||
1329 | DEFUN ("unwind-protect", Funwind_protect, Sunwind_protect, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1330 | doc: /* Do BODYFORM, protecting with UNWINDFORMS. |
1331 | If BODYFORM completes normally, its value is returned | |
1332 | after executing the UNWINDFORMS. | |
1333 | If BODYFORM exits nonlocally, the UNWINDFORMS are executed anyway. | |
7a25dc6d | 1334 | usage: (unwind-protect BODYFORM UNWINDFORMS...) */) |
9dbc9081 | 1335 | (args) |
db9f0278 JB |
1336 | Lisp_Object args; |
1337 | { | |
1338 | Lisp_Object val; | |
aed13378 | 1339 | int count = SPECPDL_INDEX (); |
db9f0278 | 1340 | |
04b28167 | 1341 | record_unwind_protect (Fprogn, Fcdr (args)); |
db9f0278 | 1342 | val = Feval (Fcar (args)); |
177c0ea7 | 1343 | return unbind_to (count, val); |
db9f0278 JB |
1344 | } |
1345 | \f | |
1346 | /* Chain of condition handlers currently in effect. | |
1347 | The elements of this chain are contained in the stack frames | |
1348 | of Fcondition_case and internal_condition_case. | |
1349 | When an error is signaled (by calling Fsignal, below), | |
1350 | this chain is searched for an element that applies. */ | |
1351 | ||
1352 | struct handler *handlerlist; | |
1353 | ||
1354 | DEFUN ("condition-case", Fcondition_case, Scondition_case, 2, UNEVALLED, 0, | |
9dbc9081 | 1355 | doc: /* Regain control when an error is signaled. |
1b1acc13 | 1356 | Executes BODYFORM and returns its value if no error happens. |
9dbc9081 PJ |
1357 | Each element of HANDLERS looks like (CONDITION-NAME BODY...) |
1358 | where the BODY is made of Lisp expressions. | |
1359 | ||
1360 | A handler is applicable to an error | |
1361 | if CONDITION-NAME is one of the error's condition names. | |
1362 | If an error happens, the first applicable handler is run. | |
1363 | ||
1364 | The car of a handler may be a list of condition names | |
c997bb25 | 1365 | instead of a single condition name. Then it handles all of them. |
9dbc9081 | 1366 | |
c997bb25 RS |
1367 | When a handler handles an error, control returns to the `condition-case' |
1368 | and it executes the handler's BODY... | |
d0acbbaf | 1369 | with VAR bound to (ERROR-SYMBOL . SIGNAL-DATA) from the error. |
c997bb25 RS |
1370 | (If VAR is nil, the handler can't access that information.) |
1371 | Then the value of the last BODY form is returned from the `condition-case' | |
1372 | expression. | |
9dbc9081 | 1373 | |
9dbc9081 | 1374 | See also the function `signal' for more info. |
2b47b74d | 1375 | usage: (condition-case VAR BODYFORM &rest HANDLERS) */) |
9dbc9081 | 1376 | (args) |
db9f0278 JB |
1377 | Lisp_Object args; |
1378 | { | |
17401c97 GM |
1379 | register Lisp_Object bodyform, handlers; |
1380 | volatile Lisp_Object var; | |
db9f0278 | 1381 | |
82da7701 JB |
1382 | var = Fcar (args); |
1383 | bodyform = Fcar (Fcdr (args)); | |
1384 | handlers = Fcdr (Fcdr (args)); | |
ee830945 RS |
1385 | |
1386 | return internal_lisp_condition_case (var, bodyform, handlers); | |
1387 | } | |
1388 | ||
1389 | /* Like Fcondition_case, but the args are separate | |
1390 | rather than passed in a list. Used by Fbyte_code. */ | |
1391 | ||
1392 | Lisp_Object | |
d3da34e0 JB |
1393 | internal_lisp_condition_case (volatile Lisp_Object var, Lisp_Object bodyform, |
1394 | Lisp_Object handlers) | |
ee830945 RS |
1395 | { |
1396 | Lisp_Object val; | |
1397 | struct catchtag c; | |
1398 | struct handler h; | |
1399 | ||
b7826503 | 1400 | CHECK_SYMBOL (var); |
82da7701 | 1401 | |
2b47b74d | 1402 | for (val = handlers; CONSP (val); val = XCDR (val)) |
82da7701 JB |
1403 | { |
1404 | Lisp_Object tem; | |
2b47b74d | 1405 | tem = XCAR (val); |
5f96776a RS |
1406 | if (! (NILP (tem) |
1407 | || (CONSP (tem) | |
03699b14 KR |
1408 | && (SYMBOLP (XCAR (tem)) |
1409 | || CONSP (XCAR (tem)))))) | |
82da7701 JB |
1410 | error ("Invalid condition handler", tem); |
1411 | } | |
db9f0278 JB |
1412 | |
1413 | c.tag = Qnil; | |
1414 | c.val = Qnil; | |
1415 | c.backlist = backtrace_list; | |
1416 | c.handlerlist = handlerlist; | |
1417 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1418 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1419 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1420 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1421 | c.gcpro = gcprolist; |
bcf28080 | 1422 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1423 | if (_setjmp (c.jmp)) |
1424 | { | |
265a9e55 | 1425 | if (!NILP (h.var)) |
9d58218c RS |
1426 | specbind (h.var, c.val); |
1427 | val = Fprogn (Fcdr (h.chosen_clause)); | |
82da7701 JB |
1428 | |
1429 | /* Note that this just undoes the binding of h.var; whoever | |
1430 | longjumped to us unwound the stack to c.pdlcount before | |
1431 | throwing. */ | |
db9f0278 JB |
1432 | unbind_to (c.pdlcount, Qnil); |
1433 | return val; | |
1434 | } | |
1435 | c.next = catchlist; | |
1436 | catchlist = &c; | |
177c0ea7 | 1437 | |
82da7701 JB |
1438 | h.var = var; |
1439 | h.handler = handlers; | |
db9f0278 | 1440 | h.next = handlerlist; |
db9f0278 JB |
1441 | h.tag = &c; |
1442 | handlerlist = &h; | |
1443 | ||
82da7701 | 1444 | val = Feval (bodyform); |
db9f0278 JB |
1445 | catchlist = c.next; |
1446 | handlerlist = h.next; | |
1447 | return val; | |
1448 | } | |
1449 | ||
f029ca5f RS |
1450 | /* Call the function BFUN with no arguments, catching errors within it |
1451 | according to HANDLERS. If there is an error, call HFUN with | |
1452 | one argument which is the data that describes the error: | |
1453 | (SIGNALNAME . DATA) | |
1454 | ||
1455 | HANDLERS can be a list of conditions to catch. | |
1456 | If HANDLERS is Qt, catch all errors. | |
1457 | If HANDLERS is Qerror, catch all errors | |
1458 | but allow the debugger to run if that is enabled. */ | |
1459 | ||
db9f0278 | 1460 | Lisp_Object |
d3da34e0 JB |
1461 | internal_condition_case (Lisp_Object (*bfun) (void), Lisp_Object handlers, |
1462 | Lisp_Object (*hfun) (Lisp_Object)) | |
db9f0278 JB |
1463 | { |
1464 | Lisp_Object val; | |
1465 | struct catchtag c; | |
1466 | struct handler h; | |
1467 | ||
88019a63 RS |
1468 | /* Since Fsignal will close off all calls to x_catch_errors, |
1469 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1470 | #if HAVE_X_WINDOWS |
88019a63 | 1471 | if (x_catching_errors ()) |
01591d17 | 1472 | abort (); |
a2a103bb | 1473 | #endif |
01591d17 | 1474 | |
db9f0278 JB |
1475 | c.tag = Qnil; |
1476 | c.val = Qnil; | |
1477 | c.backlist = backtrace_list; | |
1478 | c.handlerlist = handlerlist; | |
1479 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1480 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1481 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1482 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1483 | c.gcpro = gcprolist; |
bcf28080 | 1484 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1485 | if (_setjmp (c.jmp)) |
1486 | { | |
9d58218c | 1487 | return (*hfun) (c.val); |
db9f0278 JB |
1488 | } |
1489 | c.next = catchlist; | |
1490 | catchlist = &c; | |
1491 | h.handler = handlers; | |
1492 | h.var = Qnil; | |
db9f0278 JB |
1493 | h.next = handlerlist; |
1494 | h.tag = &c; | |
1495 | handlerlist = &h; | |
1496 | ||
1497 | val = (*bfun) (); | |
1498 | catchlist = c.next; | |
1499 | handlerlist = h.next; | |
1500 | return val; | |
1501 | } | |
1502 | ||
2659a09f | 1503 | /* Like internal_condition_case but call BFUN with ARG as its argument. */ |
f029ca5f | 1504 | |
d227775c | 1505 | Lisp_Object |
d3da34e0 JB |
1506 | internal_condition_case_1 (Lisp_Object (*bfun) (Lisp_Object), Lisp_Object arg, |
1507 | Lisp_Object handlers, Lisp_Object (*hfun) (Lisp_Object)) | |
d227775c RS |
1508 | { |
1509 | Lisp_Object val; | |
1510 | struct catchtag c; | |
1511 | struct handler h; | |
1512 | ||
88019a63 RS |
1513 | /* Since Fsignal will close off all calls to x_catch_errors, |
1514 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1515 | #if HAVE_X_WINDOWS |
88019a63 RS |
1516 | if (x_catching_errors ()) |
1517 | abort (); | |
a2a103bb | 1518 | #endif |
88019a63 | 1519 | |
d227775c RS |
1520 | c.tag = Qnil; |
1521 | c.val = Qnil; | |
1522 | c.backlist = backtrace_list; | |
1523 | c.handlerlist = handlerlist; | |
1524 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1525 | c.pdlcount = SPECPDL_INDEX (); |
d227775c | 1526 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1527 | c.interrupt_input_blocked = interrupt_input_blocked; |
d227775c | 1528 | c.gcpro = gcprolist; |
bcf28080 | 1529 | c.byte_stack = byte_stack_list; |
d227775c RS |
1530 | if (_setjmp (c.jmp)) |
1531 | { | |
9d58218c | 1532 | return (*hfun) (c.val); |
d227775c RS |
1533 | } |
1534 | c.next = catchlist; | |
1535 | catchlist = &c; | |
1536 | h.handler = handlers; | |
1537 | h.var = Qnil; | |
1538 | h.next = handlerlist; | |
1539 | h.tag = &c; | |
1540 | handlerlist = &h; | |
1541 | ||
1542 | val = (*bfun) (arg); | |
1543 | catchlist = c.next; | |
1544 | handlerlist = h.next; | |
1545 | return val; | |
1546 | } | |
10b29d41 | 1547 | |
53967e09 CY |
1548 | /* Like internal_condition_case_1 but call BFUN with ARG1 and ARG2 as |
1549 | its arguments. */ | |
1550 | ||
1551 | Lisp_Object | |
178f2507 SM |
1552 | internal_condition_case_2 (Lisp_Object (*bfun) (Lisp_Object, Lisp_Object), |
1553 | Lisp_Object arg1, | |
1554 | Lisp_Object arg2, | |
1555 | Lisp_Object handlers, | |
1556 | Lisp_Object (*hfun) (Lisp_Object)) | |
53967e09 CY |
1557 | { |
1558 | Lisp_Object val; | |
1559 | struct catchtag c; | |
1560 | struct handler h; | |
1561 | ||
1562 | /* Since Fsignal will close off all calls to x_catch_errors, | |
1563 | we will get the wrong results if some are not closed now. */ | |
1564 | #if HAVE_X_WINDOWS | |
1565 | if (x_catching_errors ()) | |
1566 | abort (); | |
1567 | #endif | |
1568 | ||
1569 | c.tag = Qnil; | |
1570 | c.val = Qnil; | |
1571 | c.backlist = backtrace_list; | |
1572 | c.handlerlist = handlerlist; | |
1573 | c.lisp_eval_depth = lisp_eval_depth; | |
1574 | c.pdlcount = SPECPDL_INDEX (); | |
1575 | c.poll_suppress_count = poll_suppress_count; | |
1576 | c.interrupt_input_blocked = interrupt_input_blocked; | |
1577 | c.gcpro = gcprolist; | |
1578 | c.byte_stack = byte_stack_list; | |
1579 | if (_setjmp (c.jmp)) | |
1580 | { | |
1581 | return (*hfun) (c.val); | |
1582 | } | |
1583 | c.next = catchlist; | |
1584 | catchlist = &c; | |
1585 | h.handler = handlers; | |
1586 | h.var = Qnil; | |
1587 | h.next = handlerlist; | |
1588 | h.tag = &c; | |
1589 | handlerlist = &h; | |
1590 | ||
1591 | val = (*bfun) (arg1, arg2); | |
1592 | catchlist = c.next; | |
1593 | handlerlist = h.next; | |
1594 | return val; | |
1595 | } | |
10b29d41 | 1596 | |
2659a09f | 1597 | /* Like internal_condition_case but call BFUN with NARGS as first, |
10b29d41 GM |
1598 | and ARGS as second argument. */ |
1599 | ||
1600 | Lisp_Object | |
178f2507 SM |
1601 | internal_condition_case_n (Lisp_Object (*bfun) (int, Lisp_Object*), |
1602 | int nargs, | |
1603 | Lisp_Object *args, | |
1604 | Lisp_Object handlers, | |
1605 | Lisp_Object (*hfun) (Lisp_Object)) | |
10b29d41 GM |
1606 | { |
1607 | Lisp_Object val; | |
1608 | struct catchtag c; | |
1609 | struct handler h; | |
1610 | ||
88019a63 RS |
1611 | /* Since Fsignal will close off all calls to x_catch_errors, |
1612 | we will get the wrong results if some are not closed now. */ | |
a2a103bb | 1613 | #if HAVE_X_WINDOWS |
88019a63 RS |
1614 | if (x_catching_errors ()) |
1615 | abort (); | |
a2a103bb | 1616 | #endif |
88019a63 | 1617 | |
10b29d41 GM |
1618 | c.tag = Qnil; |
1619 | c.val = Qnil; | |
1620 | c.backlist = backtrace_list; | |
1621 | c.handlerlist = handlerlist; | |
1622 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1623 | c.pdlcount = SPECPDL_INDEX (); |
10b29d41 | 1624 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1625 | c.interrupt_input_blocked = interrupt_input_blocked; |
10b29d41 GM |
1626 | c.gcpro = gcprolist; |
1627 | c.byte_stack = byte_stack_list; | |
1628 | if (_setjmp (c.jmp)) | |
1629 | { | |
1630 | return (*hfun) (c.val); | |
1631 | } | |
1632 | c.next = catchlist; | |
1633 | catchlist = &c; | |
1634 | h.handler = handlers; | |
1635 | h.var = Qnil; | |
1636 | h.next = handlerlist; | |
1637 | h.tag = &c; | |
1638 | handlerlist = &h; | |
1639 | ||
1640 | val = (*bfun) (nargs, args); | |
1641 | catchlist = c.next; | |
1642 | handlerlist = h.next; | |
1643 | return val; | |
1644 | } | |
1645 | ||
d227775c | 1646 | \f |
f57e2426 J |
1647 | static Lisp_Object find_handler_clause (Lisp_Object, Lisp_Object, |
1648 | Lisp_Object, Lisp_Object); | |
db9f0278 JB |
1649 | |
1650 | DEFUN ("signal", Fsignal, Ssignal, 2, 2, 0, | |
9dbc9081 PJ |
1651 | doc: /* Signal an error. Args are ERROR-SYMBOL and associated DATA. |
1652 | This function does not return. | |
1653 | ||
1654 | An error symbol is a symbol with an `error-conditions' property | |
1655 | that is a list of condition names. | |
1656 | A handler for any of those names will get to handle this signal. | |
1657 | The symbol `error' should normally be one of them. | |
1658 | ||
1659 | DATA should be a list. Its elements are printed as part of the error message. | |
3297ec22 LT |
1660 | See Info anchor `(elisp)Definition of signal' for some details on how this |
1661 | error message is constructed. | |
9dbc9081 PJ |
1662 | If the signal is handled, DATA is made available to the handler. |
1663 | See also the function `condition-case'. */) | |
1664 | (error_symbol, data) | |
4200e719 | 1665 | Lisp_Object error_symbol, data; |
db9f0278 | 1666 | { |
bfa8ca43 | 1667 | /* When memory is full, ERROR-SYMBOL is nil, |
26631f2b RS |
1668 | and DATA is (REAL-ERROR-SYMBOL . REAL-DATA). |
1669 | That is a special case--don't do this in other situations. */ | |
db9f0278 JB |
1670 | register struct handler *allhandlers = handlerlist; |
1671 | Lisp_Object conditions; | |
1672 | extern int gc_in_progress; | |
1673 | extern int waiting_for_input; | |
c11d3d17 | 1674 | Lisp_Object string; |
1ea9dec4 | 1675 | Lisp_Object real_error_symbol; |
a2ff3819 | 1676 | struct backtrace *bp; |
db9f0278 | 1677 | |
346598f1 | 1678 | immediate_quit = handling_signal = 0; |
d063129f | 1679 | abort_on_gc = 0; |
db9f0278 JB |
1680 | if (gc_in_progress || waiting_for_input) |
1681 | abort (); | |
1682 | ||
1ea9dec4 RS |
1683 | if (NILP (error_symbol)) |
1684 | real_error_symbol = Fcar (data); | |
1685 | else | |
1686 | real_error_symbol = error_symbol; | |
1687 | ||
26631f2b RS |
1688 | #if 0 /* rms: I don't know why this was here, |
1689 | but it is surely wrong for an error that is handled. */ | |
d148e14d | 1690 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
1691 | if (display_hourglass_p) |
1692 | cancel_hourglass (); | |
48f8dfa3 | 1693 | #endif |
177c0ea7 | 1694 | #endif |
48f8dfa3 | 1695 | |
61ede770 | 1696 | /* This hook is used by edebug. */ |
26631f2b RS |
1697 | if (! NILP (Vsignal_hook_function) |
1698 | && ! NILP (error_symbol)) | |
9f5903bb RS |
1699 | { |
1700 | /* Edebug takes care of restoring these variables when it exits. */ | |
1701 | if (lisp_eval_depth + 20 > max_lisp_eval_depth) | |
1702 | max_lisp_eval_depth = lisp_eval_depth + 20; | |
1703 | ||
1704 | if (SPECPDL_INDEX () + 40 > max_specpdl_size) | |
1705 | max_specpdl_size = SPECPDL_INDEX () + 40; | |
1706 | ||
1707 | call2 (Vsignal_hook_function, error_symbol, data); | |
1708 | } | |
61ede770 | 1709 | |
1ea9dec4 | 1710 | conditions = Fget (real_error_symbol, Qerror_conditions); |
db9f0278 | 1711 | |
a2ff3819 GM |
1712 | /* Remember from where signal was called. Skip over the frame for |
1713 | `signal' itself. If a frame for `error' follows, skip that, | |
26631f2b RS |
1714 | too. Don't do this when ERROR_SYMBOL is nil, because that |
1715 | is a memory-full error. */ | |
090a072f | 1716 | Vsignaling_function = Qnil; |
26631f2b | 1717 | if (backtrace_list && !NILP (error_symbol)) |
090a072f GM |
1718 | { |
1719 | bp = backtrace_list->next; | |
1720 | if (bp && bp->function && EQ (*bp->function, Qerror)) | |
1721 | bp = bp->next; | |
1722 | if (bp && bp->function) | |
1723 | Vsignaling_function = *bp->function; | |
1724 | } | |
a2ff3819 | 1725 | |
db9f0278 JB |
1726 | for (; handlerlist; handlerlist = handlerlist->next) |
1727 | { | |
1728 | register Lisp_Object clause; | |
177c0ea7 | 1729 | |
db9f0278 | 1730 | clause = find_handler_clause (handlerlist->handler, conditions, |
f01cbfdd | 1731 | error_symbol, data); |
db9f0278 | 1732 | |
db9f0278 | 1733 | if (EQ (clause, Qlambda)) |
82da7701 | 1734 | { |
690337b7 KH |
1735 | /* We can't return values to code which signaled an error, but we |
1736 | can continue code which has signaled a quit. */ | |
1ea9dec4 | 1737 | if (EQ (real_error_symbol, Qquit)) |
82da7701 JB |
1738 | return Qnil; |
1739 | else | |
d3e6f8be | 1740 | error ("Cannot return from the debugger in an error"); |
82da7701 | 1741 | } |
db9f0278 | 1742 | |
265a9e55 | 1743 | if (!NILP (clause)) |
db9f0278 | 1744 | { |
9d58218c | 1745 | Lisp_Object unwind_data; |
db9f0278 | 1746 | struct handler *h = handlerlist; |
9d58218c | 1747 | |
db9f0278 | 1748 | handlerlist = allhandlers; |
1ea9dec4 RS |
1749 | |
1750 | if (NILP (error_symbol)) | |
1751 | unwind_data = data; | |
9d58218c RS |
1752 | else |
1753 | unwind_data = Fcons (error_symbol, data); | |
1754 | h->chosen_clause = clause; | |
1755 | unwind_to_catch (h->tag, unwind_data); | |
db9f0278 JB |
1756 | } |
1757 | } | |
1758 | ||
1759 | handlerlist = allhandlers; | |
1760 | /* If no handler is present now, try to run the debugger, | |
1761 | and if that fails, throw to top level. */ | |
f01cbfdd | 1762 | find_handler_clause (Qerror, conditions, error_symbol, data); |
c11d3d17 RS |
1763 | if (catchlist != 0) |
1764 | Fthrow (Qtop_level, Qt); | |
1765 | ||
1ea9dec4 | 1766 | if (! NILP (error_symbol)) |
c11d3d17 RS |
1767 | data = Fcons (error_symbol, data); |
1768 | ||
1769 | string = Ferror_message_string (data); | |
d5db4077 | 1770 | fatal ("%s", SDATA (string), 0); |
db9f0278 JB |
1771 | } |
1772 | ||
734d55a2 KS |
1773 | /* Internal version of Fsignal that never returns. |
1774 | Used for anything but Qquit (which can return from Fsignal). */ | |
1775 | ||
1776 | void | |
d3da34e0 | 1777 | xsignal (Lisp_Object error_symbol, Lisp_Object data) |
734d55a2 KS |
1778 | { |
1779 | Fsignal (error_symbol, data); | |
1780 | abort (); | |
1781 | } | |
1782 | ||
1783 | /* Like xsignal, but takes 0, 1, 2, or 3 args instead of a list. */ | |
1784 | ||
1785 | void | |
d3da34e0 | 1786 | xsignal0 (Lisp_Object error_symbol) |
734d55a2 KS |
1787 | { |
1788 | xsignal (error_symbol, Qnil); | |
1789 | } | |
1790 | ||
1791 | void | |
d3da34e0 | 1792 | xsignal1 (Lisp_Object error_symbol, Lisp_Object arg) |
734d55a2 KS |
1793 | { |
1794 | xsignal (error_symbol, list1 (arg)); | |
1795 | } | |
1796 | ||
1797 | void | |
d3da34e0 | 1798 | xsignal2 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2) |
734d55a2 KS |
1799 | { |
1800 | xsignal (error_symbol, list2 (arg1, arg2)); | |
1801 | } | |
1802 | ||
1803 | void | |
d3da34e0 | 1804 | xsignal3 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
734d55a2 KS |
1805 | { |
1806 | xsignal (error_symbol, list3 (arg1, arg2, arg3)); | |
1807 | } | |
1808 | ||
1809 | /* Signal `error' with message S, and additional arg ARG. | |
1810 | If ARG is not a genuine list, make it a one-element list. */ | |
1811 | ||
1812 | void | |
d3da34e0 | 1813 | signal_error (char *s, Lisp_Object arg) |
734d55a2 KS |
1814 | { |
1815 | Lisp_Object tortoise, hare; | |
1816 | ||
1817 | hare = tortoise = arg; | |
1818 | while (CONSP (hare)) | |
1819 | { | |
1820 | hare = XCDR (hare); | |
1821 | if (!CONSP (hare)) | |
1822 | break; | |
1823 | ||
1824 | hare = XCDR (hare); | |
1825 | tortoise = XCDR (tortoise); | |
1826 | ||
1827 | if (EQ (hare, tortoise)) | |
1828 | break; | |
1829 | } | |
1830 | ||
1831 | if (!NILP (hare)) | |
1832 | arg = Fcons (arg, Qnil); /* Make it a list. */ | |
1833 | ||
1834 | xsignal (Qerror, Fcons (build_string (s), arg)); | |
1835 | } | |
1836 | ||
1837 | ||
e0f24100 | 1838 | /* Return nonzero if LIST is a non-nil atom or |
128c0f66 RM |
1839 | a list containing one of CONDITIONS. */ |
1840 | ||
1841 | static int | |
d3da34e0 | 1842 | wants_debugger (Lisp_Object list, Lisp_Object conditions) |
128c0f66 | 1843 | { |
4de86b16 | 1844 | if (NILP (list)) |
128c0f66 RM |
1845 | return 0; |
1846 | if (! CONSP (list)) | |
1847 | return 1; | |
1848 | ||
ab67260b | 1849 | while (CONSP (conditions)) |
128c0f66 | 1850 | { |
ab67260b | 1851 | Lisp_Object this, tail; |
03699b14 KR |
1852 | this = XCAR (conditions); |
1853 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
1854 | if (EQ (XCAR (tail), this)) | |
128c0f66 | 1855 | return 1; |
03699b14 | 1856 | conditions = XCDR (conditions); |
128c0f66 | 1857 | } |
ab67260b | 1858 | return 0; |
128c0f66 RM |
1859 | } |
1860 | ||
fc950e09 KH |
1861 | /* Return 1 if an error with condition-symbols CONDITIONS, |
1862 | and described by SIGNAL-DATA, should skip the debugger | |
1b1acc13 | 1863 | according to debugger-ignored-errors. */ |
fc950e09 KH |
1864 | |
1865 | static int | |
d3da34e0 | 1866 | skip_debugger (Lisp_Object conditions, Lisp_Object data) |
fc950e09 KH |
1867 | { |
1868 | Lisp_Object tail; | |
1869 | int first_string = 1; | |
1870 | Lisp_Object error_message; | |
1871 | ||
17401c97 GM |
1872 | error_message = Qnil; |
1873 | for (tail = Vdebug_ignored_errors; CONSP (tail); tail = XCDR (tail)) | |
fc950e09 | 1874 | { |
03699b14 | 1875 | if (STRINGP (XCAR (tail))) |
fc950e09 KH |
1876 | { |
1877 | if (first_string) | |
1878 | { | |
1879 | error_message = Ferror_message_string (data); | |
1880 | first_string = 0; | |
1881 | } | |
177c0ea7 | 1882 | |
03699b14 | 1883 | if (fast_string_match (XCAR (tail), error_message) >= 0) |
fc950e09 KH |
1884 | return 1; |
1885 | } | |
1886 | else | |
1887 | { | |
1888 | Lisp_Object contail; | |
1889 | ||
17401c97 | 1890 | for (contail = conditions; CONSP (contail); contail = XCDR (contail)) |
03699b14 | 1891 | if (EQ (XCAR (tail), XCAR (contail))) |
fc950e09 KH |
1892 | return 1; |
1893 | } | |
1894 | } | |
1895 | ||
1896 | return 0; | |
1897 | } | |
1898 | ||
ddaa36e1 AS |
1899 | /* Call the debugger if calling it is currently enabled for CONDITIONS. |
1900 | SIG and DATA describe the signal, as in find_handler_clause. */ | |
1901 | ||
1902 | static int | |
d3da34e0 | 1903 | maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig, Lisp_Object data) |
ddaa36e1 AS |
1904 | { |
1905 | Lisp_Object combined_data; | |
1906 | ||
1907 | combined_data = Fcons (sig, data); | |
1908 | ||
1909 | if ( | |
1910 | /* Don't try to run the debugger with interrupts blocked. | |
1911 | The editing loop would return anyway. */ | |
1912 | ! INPUT_BLOCKED_P | |
1913 | /* Does user want to enter debugger for this kind of error? */ | |
1914 | && (EQ (sig, Qquit) | |
1915 | ? debug_on_quit | |
1916 | : wants_debugger (Vdebug_on_error, conditions)) | |
1917 | && ! skip_debugger (conditions, combined_data) | |
1918 | /* rms: what's this for? */ | |
1919 | && when_entered_debugger < num_nonmacro_input_events) | |
1920 | { | |
1921 | call_debugger (Fcons (Qerror, Fcons (combined_data, Qnil))); | |
1922 | return 1; | |
1923 | } | |
1924 | ||
1925 | return 0; | |
1926 | } | |
1927 | ||
128c0f66 | 1928 | /* Value of Qlambda means we have called debugger and user has continued. |
1ea9dec4 | 1929 | There are two ways to pass SIG and DATA: |
9b942ebd | 1930 | = SIG is the error symbol, and DATA is the rest of the data. |
1ea9dec4 | 1931 | = SIG is nil, and DATA is (SYMBOL . REST-OF-DATA). |
9b942ebd | 1932 | This is for memory-full errors only. |
1ea9dec4 | 1933 | |
9f5903bb RS |
1934 | We need to increase max_specpdl_size temporarily around |
1935 | anything we do that can push on the specpdl, so as not to get | |
1936 | a second error here in case we're handling specpdl overflow. */ | |
db9f0278 JB |
1937 | |
1938 | static Lisp_Object | |
d3da34e0 JB |
1939 | find_handler_clause (Lisp_Object handlers, Lisp_Object conditions, |
1940 | Lisp_Object sig, Lisp_Object data) | |
db9f0278 JB |
1941 | { |
1942 | register Lisp_Object h; | |
1943 | register Lisp_Object tem; | |
f01cbfdd RS |
1944 | int debugger_called = 0; |
1945 | int debugger_considered = 0; | |
db9f0278 | 1946 | |
f01cbfdd RS |
1947 | /* t is used by handlers for all conditions, set up by C code. */ |
1948 | if (EQ (handlers, Qt)) | |
db9f0278 | 1949 | return Qt; |
f01cbfdd RS |
1950 | |
1951 | /* Don't run the debugger for a memory-full error. | |
1952 | (There is no room in memory to do that!) */ | |
1953 | if (NILP (sig)) | |
1954 | debugger_considered = 1; | |
1955 | ||
61ede770 RS |
1956 | /* error is used similarly, but means print an error message |
1957 | and run the debugger if that is enabled. */ | |
1958 | if (EQ (handlers, Qerror) | |
57a6e758 RS |
1959 | || !NILP (Vdebug_on_signal)) /* This says call debugger even if |
1960 | there is a handler. */ | |
db9f0278 | 1961 | { |
f01cbfdd | 1962 | if (!NILP (sig) && wants_debugger (Vstack_trace_on_error, conditions)) |
88817f3b | 1963 | { |
48ce8ca7 | 1964 | max_lisp_eval_depth += 15; |
9f5903bb | 1965 | max_specpdl_size++; |
5b650faa SM |
1966 | if (noninteractive) |
1967 | Fbacktrace (); | |
1968 | else | |
1969 | internal_with_output_to_temp_buffer | |
1970 | ("*Backtrace*", | |
1971 | (Lisp_Object (*) (Lisp_Object)) Fbacktrace, | |
1972 | Qnil); | |
9f5903bb | 1973 | max_specpdl_size--; |
48ce8ca7 | 1974 | max_lisp_eval_depth -= 15; |
88817f3b | 1975 | } |
f01cbfdd RS |
1976 | |
1977 | if (!debugger_considered) | |
db9f0278 | 1978 | { |
f01cbfdd RS |
1979 | debugger_considered = 1; |
1980 | debugger_called = maybe_call_debugger (conditions, sig, data); | |
61ede770 | 1981 | } |
f01cbfdd | 1982 | |
61ede770 RS |
1983 | /* If there is no handler, return saying whether we ran the debugger. */ |
1984 | if (EQ (handlers, Qerror)) | |
1985 | { | |
1986 | if (debugger_called) | |
9f5903bb | 1987 | return Qlambda; |
61ede770 | 1988 | return Qt; |
db9f0278 | 1989 | } |
db9f0278 | 1990 | } |
f01cbfdd | 1991 | |
db9f0278 JB |
1992 | for (h = handlers; CONSP (h); h = Fcdr (h)) |
1993 | { | |
5f96776a RS |
1994 | Lisp_Object handler, condit; |
1995 | ||
1996 | handler = Fcar (h); | |
1997 | if (!CONSP (handler)) | |
db9f0278 | 1998 | continue; |
5f96776a RS |
1999 | condit = Fcar (handler); |
2000 | /* Handle a single condition name in handler HANDLER. */ | |
2001 | if (SYMBOLP (condit)) | |
2002 | { | |
2003 | tem = Fmemq (Fcar (handler), conditions); | |
2004 | if (!NILP (tem)) | |
2005 | return handler; | |
2006 | } | |
2007 | /* Handle a list of condition names in handler HANDLER. */ | |
2008 | else if (CONSP (condit)) | |
2009 | { | |
f01cbfdd RS |
2010 | Lisp_Object tail; |
2011 | for (tail = condit; CONSP (tail); tail = XCDR (tail)) | |
5f96776a | 2012 | { |
f01cbfdd | 2013 | tem = Fmemq (Fcar (tail), conditions); |
5f96776a | 2014 | if (!NILP (tem)) |
f01cbfdd RS |
2015 | { |
2016 | /* This handler is going to apply. | |
2017 | Does it allow the debugger to run first? */ | |
2018 | if (! debugger_considered && !NILP (Fmemq (Qdebug, condit))) | |
2019 | maybe_call_debugger (conditions, sig, data); | |
2020 | return handler; | |
2021 | } | |
5f96776a RS |
2022 | } |
2023 | } | |
db9f0278 | 2024 | } |
f01cbfdd | 2025 | |
db9f0278 JB |
2026 | return Qnil; |
2027 | } | |
2028 | ||
2029 | /* dump an error message; called like printf */ | |
2030 | ||
2031 | /* VARARGS 1 */ | |
2032 | void | |
2033 | error (m, a1, a2, a3) | |
2034 | char *m; | |
9125da08 | 2035 | char *a1, *a2, *a3; |
db9f0278 JB |
2036 | { |
2037 | char buf[200]; | |
9125da08 RS |
2038 | int size = 200; |
2039 | int mlen; | |
2040 | char *buffer = buf; | |
2041 | char *args[3]; | |
2042 | int allocated = 0; | |
2043 | Lisp_Object string; | |
2044 | ||
2045 | args[0] = a1; | |
2046 | args[1] = a2; | |
2047 | args[2] = a3; | |
2048 | ||
2049 | mlen = strlen (m); | |
db9f0278 JB |
2050 | |
2051 | while (1) | |
9125da08 | 2052 | { |
955f3ff9 | 2053 | int used = doprnt (buffer, size, m, m + mlen, 3, args); |
9125da08 RS |
2054 | if (used < size) |
2055 | break; | |
2056 | size *= 2; | |
2057 | if (allocated) | |
2058 | buffer = (char *) xrealloc (buffer, size); | |
5ece1728 RS |
2059 | else |
2060 | { | |
2061 | buffer = (char *) xmalloc (size); | |
2062 | allocated = 1; | |
2063 | } | |
9125da08 RS |
2064 | } |
2065 | ||
955f3ff9 | 2066 | string = build_string (buffer); |
9125da08 | 2067 | if (allocated) |
9ae6734f | 2068 | xfree (buffer); |
9125da08 | 2069 | |
734d55a2 | 2070 | xsignal1 (Qerror, string); |
db9f0278 JB |
2071 | } |
2072 | \f | |
e72706be | 2073 | DEFUN ("commandp", Fcommandp, Scommandp, 1, 2, 0, |
9dbc9081 PJ |
2074 | doc: /* Non-nil if FUNCTION makes provisions for interactive calling. |
2075 | This means it contains a description for how to read arguments to give it. | |
2076 | The value is nil for an invalid function or a symbol with no function | |
2077 | definition. | |
2078 | ||
2079 | Interactively callable functions include strings and vectors (treated | |
2080 | as keyboard macros), lambda-expressions that contain a top-level call | |
2081 | to `interactive', autoload definitions made by `autoload' with non-nil | |
2082 | fourth argument, and some of the built-in functions of Lisp. | |
2083 | ||
e72706be RS |
2084 | Also, a symbol satisfies `commandp' if its function definition does so. |
2085 | ||
2086 | If the optional argument FOR-CALL-INTERACTIVELY is non-nil, | |
769b4fb2 | 2087 | then strings and vectors are not accepted. */) |
e72706be RS |
2088 | (function, for_call_interactively) |
2089 | Lisp_Object function, for_call_interactively; | |
db9f0278 JB |
2090 | { |
2091 | register Lisp_Object fun; | |
2092 | register Lisp_Object funcar; | |
52b71f49 | 2093 | Lisp_Object if_prop = Qnil; |
db9f0278 JB |
2094 | |
2095 | fun = function; | |
2096 | ||
52b71f49 SM |
2097 | fun = indirect_function (fun); /* Check cycles. */ |
2098 | if (NILP (fun) || EQ (fun, Qunbound)) | |
ffd56f97 | 2099 | return Qnil; |
db9f0278 | 2100 | |
52b71f49 SM |
2101 | /* Check an `interactive-form' property if present, analogous to the |
2102 | function-documentation property. */ | |
2103 | fun = function; | |
2104 | while (SYMBOLP (fun)) | |
2105 | { | |
2b9aa051 | 2106 | Lisp_Object tmp = Fget (fun, Qinteractive_form); |
52b71f49 SM |
2107 | if (!NILP (tmp)) |
2108 | if_prop = Qt; | |
2109 | fun = Fsymbol_function (fun); | |
2110 | } | |
2111 | ||
db9f0278 JB |
2112 | /* Emacs primitives are interactive if their DEFUN specifies an |
2113 | interactive spec. */ | |
90165123 | 2114 | if (SUBRP (fun)) |
04724b69 | 2115 | return XSUBR (fun)->intspec ? Qt : if_prop; |
db9f0278 JB |
2116 | |
2117 | /* Bytecode objects are interactive if they are long enough to | |
2118 | have an element whose index is COMPILED_INTERACTIVE, which is | |
2119 | where the interactive spec is stored. */ | |
90165123 | 2120 | else if (COMPILEDP (fun)) |
845975f5 | 2121 | return ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE |
52b71f49 | 2122 | ? Qt : if_prop); |
db9f0278 JB |
2123 | |
2124 | /* Strings and vectors are keyboard macros. */ | |
52b71f49 | 2125 | if (STRINGP (fun) || VECTORP (fun)) |
6e33efc4 | 2126 | return (NILP (for_call_interactively) ? Qt : Qnil); |
db9f0278 JB |
2127 | |
2128 | /* Lists may represent commands. */ | |
2129 | if (!CONSP (fun)) | |
2130 | return Qnil; | |
ed16fb98 | 2131 | funcar = XCAR (fun); |
db9f0278 | 2132 | if (EQ (funcar, Qlambda)) |
52b71f49 | 2133 | return !NILP (Fassq (Qinteractive, Fcdr (XCDR (fun)))) ? Qt : if_prop; |
db9f0278 | 2134 | if (EQ (funcar, Qautoload)) |
52b71f49 | 2135 | return !NILP (Fcar (Fcdr (Fcdr (XCDR (fun))))) ? Qt : if_prop; |
db9f0278 JB |
2136 | else |
2137 | return Qnil; | |
2138 | } | |
2139 | ||
db9f0278 | 2140 | DEFUN ("autoload", Fautoload, Sautoload, 2, 5, 0, |
9dbc9081 PJ |
2141 | doc: /* Define FUNCTION to autoload from FILE. |
2142 | FUNCTION is a symbol; FILE is a file name string to pass to `load'. | |
2143 | Third arg DOCSTRING is documentation for the function. | |
2144 | Fourth arg INTERACTIVE if non-nil says function can be called interactively. | |
2145 | Fifth arg TYPE indicates the type of the object: | |
2146 | nil or omitted says FUNCTION is a function, | |
2147 | `keymap' says FUNCTION is really a keymap, and | |
2148 | `macro' or t says FUNCTION is really a macro. | |
2149 | Third through fifth args give info about the real definition. | |
2150 | They default to nil. | |
2151 | If FUNCTION is already defined other than as an autoload, | |
2152 | this does nothing and returns nil. */) | |
2153 | (function, file, docstring, interactive, type) | |
ee9ee63c | 2154 | Lisp_Object function, file, docstring, interactive, type; |
db9f0278 | 2155 | { |
b7826503 PJ |
2156 | CHECK_SYMBOL (function); |
2157 | CHECK_STRING (file); | |
db9f0278 JB |
2158 | |
2159 | /* If function is defined and not as an autoload, don't override */ | |
2160 | if (!EQ (XSYMBOL (function)->function, Qunbound) | |
90165123 | 2161 | && !(CONSP (XSYMBOL (function)->function) |
03699b14 | 2162 | && EQ (XCAR (XSYMBOL (function)->function), Qautoload))) |
db9f0278 JB |
2163 | return Qnil; |
2164 | ||
7973e637 SM |
2165 | if (NILP (Vpurify_flag)) |
2166 | /* Only add entries after dumping, because the ones before are | |
2167 | not useful and else we get loads of them from the loaddefs.el. */ | |
2168 | LOADHIST_ATTACH (Fcons (Qautoload, function)); | |
905a9ed3 | 2169 | else |
a56eaaef | 2170 | /* We don't want the docstring in purespace (instead, |
d6d23852 SM |
2171 | Snarf-documentation should (hopefully) overwrite it). |
2172 | We used to use 0 here, but that leads to accidental sharing in | |
2173 | purecopy's hash-consing, so we use a (hopefully) unique integer | |
2174 | instead. */ | |
2175 | docstring = make_number (XHASH (function)); | |
a56eaaef DN |
2176 | return Ffset (function, |
2177 | Fpurecopy (list5 (Qautoload, file, docstring, | |
2178 | interactive, type))); | |
db9f0278 JB |
2179 | } |
2180 | ||
2181 | Lisp_Object | |
d3da34e0 | 2182 | un_autoload (Lisp_Object oldqueue) |
db9f0278 JB |
2183 | { |
2184 | register Lisp_Object queue, first, second; | |
2185 | ||
2186 | /* Queue to unwind is current value of Vautoload_queue. | |
2187 | oldqueue is the shadowed value to leave in Vautoload_queue. */ | |
2188 | queue = Vautoload_queue; | |
2189 | Vautoload_queue = oldqueue; | |
2190 | while (CONSP (queue)) | |
2191 | { | |
e509f168 | 2192 | first = XCAR (queue); |
db9f0278 JB |
2193 | second = Fcdr (first); |
2194 | first = Fcar (first); | |
47b82df9 RS |
2195 | if (EQ (first, make_number (0))) |
2196 | Vfeatures = second; | |
db9f0278 JB |
2197 | else |
2198 | Ffset (first, second); | |
e509f168 | 2199 | queue = XCDR (queue); |
db9f0278 JB |
2200 | } |
2201 | return Qnil; | |
2202 | } | |
2203 | ||
ca20916b RS |
2204 | /* Load an autoloaded function. |
2205 | FUNNAME is the symbol which is the function's name. | |
2206 | FUNDEF is the autoload definition (a list). */ | |
2207 | ||
045ba794 | 2208 | void |
d3da34e0 | 2209 | do_autoload (Lisp_Object fundef, Lisp_Object funname) |
db9f0278 | 2210 | { |
aed13378 | 2211 | int count = SPECPDL_INDEX (); |
d945992e | 2212 | Lisp_Object fun; |
ca20916b | 2213 | struct gcpro gcpro1, gcpro2, gcpro3; |
db9f0278 | 2214 | |
aea6173f RS |
2215 | /* This is to make sure that loadup.el gives a clear picture |
2216 | of what files are preloaded and when. */ | |
ab4db096 RS |
2217 | if (! NILP (Vpurify_flag)) |
2218 | error ("Attempt to autoload %s while preparing to dump", | |
d5db4077 | 2219 | SDATA (SYMBOL_NAME (funname))); |
ab4db096 | 2220 | |
db9f0278 | 2221 | fun = funname; |
b7826503 | 2222 | CHECK_SYMBOL (funname); |
ca20916b | 2223 | GCPRO3 (fun, funname, fundef); |
db9f0278 | 2224 | |
f87740dc | 2225 | /* Preserve the match data. */ |
89f2614d | 2226 | record_unwind_save_match_data (); |
177c0ea7 | 2227 | |
a04ee161 RS |
2228 | /* If autoloading gets an error (which includes the error of failing |
2229 | to define the function being called), we use Vautoload_queue | |
2230 | to undo function definitions and `provide' calls made by | |
2231 | the function. We do this in the specific case of autoloading | |
2232 | because autoloading is not an explicit request "load this file", | |
2233 | but rather a request to "call this function". | |
d3da34e0 | 2234 | |
a04ee161 | 2235 | The value saved here is to be restored into Vautoload_queue. */ |
db9f0278 JB |
2236 | record_unwind_protect (un_autoload, Vautoload_queue); |
2237 | Vautoload_queue = Qt; | |
7351b242 | 2238 | Fload (Fcar (Fcdr (fundef)), Qnil, Qt, Qnil, Qt); |
2a49b6e5 | 2239 | |
db9f0278 JB |
2240 | /* Once loading finishes, don't undo it. */ |
2241 | Vautoload_queue = Qt; | |
2242 | unbind_to (count, Qnil); | |
2243 | ||
a7f96a35 | 2244 | fun = Findirect_function (fun, Qnil); |
ffd56f97 | 2245 | |
76c2b0cc | 2246 | if (!NILP (Fequal (fun, fundef))) |
db9f0278 | 2247 | error ("Autoloading failed to define function %s", |
d5db4077 | 2248 | SDATA (SYMBOL_NAME (funname))); |
ca20916b | 2249 | UNGCPRO; |
db9f0278 | 2250 | } |
4c576a83 | 2251 | |
db9f0278 JB |
2252 | \f |
2253 | DEFUN ("eval", Feval, Seval, 1, 1, 0, | |
9dbc9081 PJ |
2254 | doc: /* Evaluate FORM and return its value. */) |
2255 | (form) | |
db9f0278 JB |
2256 | Lisp_Object form; |
2257 | { | |
2258 | Lisp_Object fun, val, original_fun, original_args; | |
2259 | Lisp_Object funcar; | |
2260 | struct backtrace backtrace; | |
2261 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2262 | ||
df470e3b | 2263 | if (handling_signal) |
48f8dfa3 | 2264 | abort (); |
177c0ea7 | 2265 | |
90165123 | 2266 | if (SYMBOLP (form)) |
2b9bde76 | 2267 | return Fsymbol_value (form); |
db9f0278 JB |
2268 | if (!CONSP (form)) |
2269 | return form; | |
2270 | ||
2271 | QUIT; | |
ee830945 RS |
2272 | if ((consing_since_gc > gc_cons_threshold |
2273 | && consing_since_gc > gc_relative_threshold) | |
2274 | || | |
2275 | (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold)) | |
db9f0278 JB |
2276 | { |
2277 | GCPRO1 (form); | |
2278 | Fgarbage_collect (); | |
2279 | UNGCPRO; | |
2280 | } | |
2281 | ||
2282 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2283 | { | |
2284 | if (max_lisp_eval_depth < 100) | |
2285 | max_lisp_eval_depth = 100; | |
2286 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2287 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2288 | } |
2289 | ||
2290 | original_fun = Fcar (form); | |
2291 | original_args = Fcdr (form); | |
2292 | ||
2293 | backtrace.next = backtrace_list; | |
2294 | backtrace_list = &backtrace; | |
2295 | backtrace.function = &original_fun; /* This also protects them from gc */ | |
2296 | backtrace.args = &original_args; | |
2297 | backtrace.nargs = UNEVALLED; | |
2298 | backtrace.evalargs = 1; | |
2299 | backtrace.debug_on_exit = 0; | |
2300 | ||
2301 | if (debug_on_next_call) | |
2302 | do_debug_on_call (Qt); | |
2303 | ||
2304 | /* At this point, only original_fun and original_args | |
2305 | have values that will be used below */ | |
2306 | retry: | |
8788120f KS |
2307 | |
2308 | /* Optimize for no indirection. */ | |
2309 | fun = original_fun; | |
2310 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2311 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2312 | fun = indirect_function (fun); | |
db9f0278 | 2313 | |
90165123 | 2314 | if (SUBRP (fun)) |
db9f0278 JB |
2315 | { |
2316 | Lisp_Object numargs; | |
166c822d | 2317 | Lisp_Object argvals[8]; |
db9f0278 JB |
2318 | Lisp_Object args_left; |
2319 | register int i, maxargs; | |
2320 | ||
2321 | args_left = original_args; | |
2322 | numargs = Flength (args_left); | |
2323 | ||
c1788fbc RS |
2324 | CHECK_CONS_LIST (); |
2325 | ||
db9f0278 JB |
2326 | if (XINT (numargs) < XSUBR (fun)->min_args || |
2327 | (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < XINT (numargs))) | |
734d55a2 | 2328 | xsignal2 (Qwrong_number_of_arguments, original_fun, numargs); |
db9f0278 JB |
2329 | |
2330 | if (XSUBR (fun)->max_args == UNEVALLED) | |
2331 | { | |
2332 | backtrace.evalargs = 0; | |
c0f2f16b | 2333 | val = (XSUBR (fun)->function.a1) (args_left); |
db9f0278 JB |
2334 | goto done; |
2335 | } | |
2336 | ||
2337 | if (XSUBR (fun)->max_args == MANY) | |
2338 | { | |
2339 | /* Pass a vector of evaluated arguments */ | |
2340 | Lisp_Object *vals; | |
2341 | register int argnum = 0; | |
2342 | ||
2343 | vals = (Lisp_Object *) alloca (XINT (numargs) * sizeof (Lisp_Object)); | |
2344 | ||
2345 | GCPRO3 (args_left, fun, fun); | |
2346 | gcpro3.var = vals; | |
2347 | gcpro3.nvars = 0; | |
2348 | ||
265a9e55 | 2349 | while (!NILP (args_left)) |
db9f0278 JB |
2350 | { |
2351 | vals[argnum++] = Feval (Fcar (args_left)); | |
2352 | args_left = Fcdr (args_left); | |
2353 | gcpro3.nvars = argnum; | |
2354 | } | |
db9f0278 JB |
2355 | |
2356 | backtrace.args = vals; | |
2357 | backtrace.nargs = XINT (numargs); | |
2358 | ||
c0f2f16b | 2359 | val = (XSUBR (fun)->function.am) (XINT (numargs), vals); |
a6e3fa71 | 2360 | UNGCPRO; |
db9f0278 JB |
2361 | goto done; |
2362 | } | |
2363 | ||
2364 | GCPRO3 (args_left, fun, fun); | |
2365 | gcpro3.var = argvals; | |
2366 | gcpro3.nvars = 0; | |
2367 | ||
2368 | maxargs = XSUBR (fun)->max_args; | |
2369 | for (i = 0; i < maxargs; args_left = Fcdr (args_left)) | |
2370 | { | |
2371 | argvals[i] = Feval (Fcar (args_left)); | |
2372 | gcpro3.nvars = ++i; | |
2373 | } | |
2374 | ||
2375 | UNGCPRO; | |
2376 | ||
2377 | backtrace.args = argvals; | |
2378 | backtrace.nargs = XINT (numargs); | |
2379 | ||
2380 | switch (i) | |
2381 | { | |
2382 | case 0: | |
c0f2f16b | 2383 | val = (XSUBR (fun)->function.a0) (); |
db9f0278 JB |
2384 | goto done; |
2385 | case 1: | |
c0f2f16b | 2386 | val = (XSUBR (fun)->function.a1) (argvals[0]); |
db9f0278 JB |
2387 | goto done; |
2388 | case 2: | |
c0f2f16b | 2389 | val = (XSUBR (fun)->function.a2) (argvals[0], argvals[1]); |
db9f0278 JB |
2390 | goto done; |
2391 | case 3: | |
c0f2f16b DN |
2392 | val = (XSUBR (fun)->function.a3) (argvals[0], argvals[1], |
2393 | argvals[2]); | |
db9f0278 JB |
2394 | goto done; |
2395 | case 4: | |
c0f2f16b DN |
2396 | val = (XSUBR (fun)->function.a4) (argvals[0], argvals[1], |
2397 | argvals[2], argvals[3]); | |
db9f0278 JB |
2398 | goto done; |
2399 | case 5: | |
c0f2f16b DN |
2400 | val = (XSUBR (fun)->function.a5) (argvals[0], argvals[1], argvals[2], |
2401 | argvals[3], argvals[4]); | |
db9f0278 JB |
2402 | goto done; |
2403 | case 6: | |
c0f2f16b DN |
2404 | val = (XSUBR (fun)->function.a6) (argvals[0], argvals[1], argvals[2], |
2405 | argvals[3], argvals[4], argvals[5]); | |
db9f0278 | 2406 | goto done; |
15c65264 | 2407 | case 7: |
c0f2f16b DN |
2408 | val = (XSUBR (fun)->function.a7) (argvals[0], argvals[1], argvals[2], |
2409 | argvals[3], argvals[4], argvals[5], | |
2410 | argvals[6]); | |
15c65264 | 2411 | goto done; |
db9f0278 | 2412 | |
166c822d | 2413 | case 8: |
c0f2f16b DN |
2414 | val = (XSUBR (fun)->function.a8) (argvals[0], argvals[1], argvals[2], |
2415 | argvals[3], argvals[4], argvals[5], | |
2416 | argvals[6], argvals[7]); | |
166c822d KH |
2417 | goto done; |
2418 | ||
db9f0278 | 2419 | default: |
08564963 JB |
2420 | /* Someone has created a subr that takes more arguments than |
2421 | is supported by this code. We need to either rewrite the | |
2422 | subr to use a different argument protocol, or add more | |
2423 | cases to this switch. */ | |
2424 | abort (); | |
db9f0278 JB |
2425 | } |
2426 | } | |
90165123 | 2427 | if (COMPILEDP (fun)) |
db9f0278 JB |
2428 | val = apply_lambda (fun, original_args, 1); |
2429 | else | |
2430 | { | |
8788120f | 2431 | if (EQ (fun, Qunbound)) |
734d55a2 | 2432 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 2433 | if (!CONSP (fun)) |
734d55a2 KS |
2434 | xsignal1 (Qinvalid_function, original_fun); |
2435 | funcar = XCAR (fun); | |
90165123 | 2436 | if (!SYMBOLP (funcar)) |
734d55a2 | 2437 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
2438 | if (EQ (funcar, Qautoload)) |
2439 | { | |
2440 | do_autoload (fun, original_fun); | |
2441 | goto retry; | |
2442 | } | |
2443 | if (EQ (funcar, Qmacro)) | |
2444 | val = Feval (apply1 (Fcdr (fun), original_args)); | |
2445 | else if (EQ (funcar, Qlambda)) | |
2446 | val = apply_lambda (fun, original_args, 1); | |
db9f0278 | 2447 | else |
734d55a2 | 2448 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
2449 | } |
2450 | done: | |
c1788fbc RS |
2451 | CHECK_CONS_LIST (); |
2452 | ||
db9f0278 JB |
2453 | lisp_eval_depth--; |
2454 | if (backtrace.debug_on_exit) | |
2455 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2456 | backtrace_list = backtrace.next; | |
824eb35e | 2457 | |
db9f0278 JB |
2458 | return val; |
2459 | } | |
2460 | \f | |
2461 | DEFUN ("apply", Fapply, Sapply, 2, MANY, 0, | |
9dbc9081 PJ |
2462 | doc: /* Call FUNCTION with our remaining args, using our last arg as list of args. |
2463 | Then return the value FUNCTION returns. | |
2464 | Thus, (apply '+ 1 2 '(3 4)) returns 10. | |
2465 | usage: (apply FUNCTION &rest ARGUMENTS) */) | |
2466 | (nargs, args) | |
db9f0278 JB |
2467 | int nargs; |
2468 | Lisp_Object *args; | |
2469 | { | |
2470 | register int i, numargs; | |
2471 | register Lisp_Object spread_arg; | |
2472 | register Lisp_Object *funcall_args; | |
db9f0278 | 2473 | Lisp_Object fun; |
96d44c64 | 2474 | struct gcpro gcpro1; |
db9f0278 JB |
2475 | |
2476 | fun = args [0]; | |
2477 | funcall_args = 0; | |
2478 | spread_arg = args [nargs - 1]; | |
b7826503 | 2479 | CHECK_LIST (spread_arg); |
177c0ea7 | 2480 | |
db9f0278 JB |
2481 | numargs = XINT (Flength (spread_arg)); |
2482 | ||
2483 | if (numargs == 0) | |
2484 | return Ffuncall (nargs - 1, args); | |
2485 | else if (numargs == 1) | |
2486 | { | |
03699b14 | 2487 | args [nargs - 1] = XCAR (spread_arg); |
db9f0278 JB |
2488 | return Ffuncall (nargs, args); |
2489 | } | |
2490 | ||
a6e3fa71 | 2491 | numargs += nargs - 2; |
db9f0278 | 2492 | |
8788120f KS |
2493 | /* Optimize for no indirection. */ |
2494 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2495 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2496 | fun = indirect_function (fun); | |
ffd56f97 | 2497 | if (EQ (fun, Qunbound)) |
db9f0278 | 2498 | { |
ffd56f97 JB |
2499 | /* Let funcall get the error */ |
2500 | fun = args[0]; | |
2501 | goto funcall; | |
db9f0278 JB |
2502 | } |
2503 | ||
90165123 | 2504 | if (SUBRP (fun)) |
db9f0278 JB |
2505 | { |
2506 | if (numargs < XSUBR (fun)->min_args | |
2507 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) | |
2508 | goto funcall; /* Let funcall get the error */ | |
2509 | else if (XSUBR (fun)->max_args > numargs) | |
2510 | { | |
2511 | /* Avoid making funcall cons up a yet another new vector of arguments | |
2512 | by explicitly supplying nil's for optional values */ | |
2513 | funcall_args = (Lisp_Object *) alloca ((1 + XSUBR (fun)->max_args) | |
2514 | * sizeof (Lisp_Object)); | |
2515 | for (i = numargs; i < XSUBR (fun)->max_args;) | |
2516 | funcall_args[++i] = Qnil; | |
96d44c64 SM |
2517 | GCPRO1 (*funcall_args); |
2518 | gcpro1.nvars = 1 + XSUBR (fun)->max_args; | |
db9f0278 JB |
2519 | } |
2520 | } | |
2521 | funcall: | |
2522 | /* We add 1 to numargs because funcall_args includes the | |
2523 | function itself as well as its arguments. */ | |
2524 | if (!funcall_args) | |
a6e3fa71 JB |
2525 | { |
2526 | funcall_args = (Lisp_Object *) alloca ((1 + numargs) | |
2527 | * sizeof (Lisp_Object)); | |
96d44c64 SM |
2528 | GCPRO1 (*funcall_args); |
2529 | gcpro1.nvars = 1 + numargs; | |
a6e3fa71 JB |
2530 | } |
2531 | ||
db9f0278 JB |
2532 | bcopy (args, funcall_args, nargs * sizeof (Lisp_Object)); |
2533 | /* Spread the last arg we got. Its first element goes in | |
2534 | the slot that it used to occupy, hence this value of I. */ | |
2535 | i = nargs - 1; | |
265a9e55 | 2536 | while (!NILP (spread_arg)) |
db9f0278 | 2537 | { |
03699b14 KR |
2538 | funcall_args [i++] = XCAR (spread_arg); |
2539 | spread_arg = XCDR (spread_arg); | |
db9f0278 | 2540 | } |
a6e3fa71 | 2541 | |
96d44c64 SM |
2542 | /* By convention, the caller needs to gcpro Ffuncall's args. */ |
2543 | RETURN_UNGCPRO (Ffuncall (gcpro1.nvars, funcall_args)); | |
db9f0278 JB |
2544 | } |
2545 | \f | |
ff936e53 SM |
2546 | /* Run hook variables in various ways. */ |
2547 | ||
2548 | enum run_hooks_condition {to_completion, until_success, until_failure}; | |
f57e2426 J |
2549 | static Lisp_Object run_hook_with_args (int, Lisp_Object *, |
2550 | enum run_hooks_condition); | |
ff936e53 | 2551 | |
8b5176cd | 2552 | DEFUN ("run-hooks", Frun_hooks, Srun_hooks, 0, MANY, 0, |
9f685258 | 2553 | doc: /* Run each hook in HOOKS. |
9dbc9081 PJ |
2554 | Each argument should be a symbol, a hook variable. |
2555 | These symbols are processed in the order specified. | |
2556 | If a hook symbol has a non-nil value, that value may be a function | |
2557 | or a list of functions to be called to run the hook. | |
2558 | If the value is a function, it is called with no arguments. | |
2559 | If it is a list, the elements are called, in order, with no arguments. | |
2560 | ||
9f685258 LK |
2561 | Major modes should not use this function directly to run their mode |
2562 | hook; they should use `run-mode-hooks' instead. | |
2563 | ||
72e85d5d RS |
2564 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2565 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2566 | usage: (run-hooks &rest HOOKS) */) |
2567 | (nargs, args) | |
ff936e53 SM |
2568 | int nargs; |
2569 | Lisp_Object *args; | |
2570 | { | |
2571 | Lisp_Object hook[1]; | |
2572 | register int i; | |
2573 | ||
2574 | for (i = 0; i < nargs; i++) | |
2575 | { | |
2576 | hook[0] = args[i]; | |
2577 | run_hook_with_args (1, hook, to_completion); | |
2578 | } | |
2579 | ||
2580 | return Qnil; | |
2581 | } | |
177c0ea7 | 2582 | |
a0d76c27 | 2583 | DEFUN ("run-hook-with-args", Frun_hook_with_args, |
9dbc9081 PJ |
2584 | Srun_hook_with_args, 1, MANY, 0, |
2585 | doc: /* Run HOOK with the specified arguments ARGS. | |
2586 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil | |
2587 | value, that value may be a function or a list of functions to be | |
2588 | called to run the hook. If the value is a function, it is called with | |
2589 | the given arguments and its return value is returned. If it is a list | |
2590 | of functions, those functions are called, in order, | |
2591 | with the given arguments ARGS. | |
d5e2c90c | 2592 | It is best not to depend on the value returned by `run-hook-with-args', |
9dbc9081 PJ |
2593 | as that may change. |
2594 | ||
72e85d5d RS |
2595 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2596 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2597 | usage: (run-hook-with-args HOOK &rest ARGS) */) |
2598 | (nargs, args) | |
ff936e53 SM |
2599 | int nargs; |
2600 | Lisp_Object *args; | |
2601 | { | |
2602 | return run_hook_with_args (nargs, args, to_completion); | |
2603 | } | |
2604 | ||
a0d76c27 | 2605 | DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success, |
9dbc9081 PJ |
2606 | Srun_hook_with_args_until_success, 1, MANY, 0, |
2607 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2608 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2609 | value, that value may be a function or a list of functions to be | |
2610 | called to run the hook. If the value is a function, it is called with | |
2611 | the given arguments and its return value is returned. | |
2612 | If it is a list of functions, those functions are called, in order, | |
2613 | with the given arguments ARGS, until one of them | |
9dbc9081 | 2614 | returns a non-nil value. Then we return that value. |
d5e2c90c | 2615 | However, if they all return nil, we return nil. |
9dbc9081 | 2616 | |
72e85d5d RS |
2617 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2618 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2619 | usage: (run-hook-with-args-until-success HOOK &rest ARGS) */) |
2620 | (nargs, args) | |
b0b667cb KH |
2621 | int nargs; |
2622 | Lisp_Object *args; | |
2623 | { | |
ff936e53 SM |
2624 | return run_hook_with_args (nargs, args, until_success); |
2625 | } | |
2626 | ||
a0d76c27 | 2627 | DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure, |
9dbc9081 PJ |
2628 | Srun_hook_with_args_until_failure, 1, MANY, 0, |
2629 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2630 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2631 | value, that value may be a function or a list of functions to be | |
2632 | called to run the hook. If the value is a function, it is called with | |
2633 | the given arguments and its return value is returned. | |
2634 | If it is a list of functions, those functions are called, in order, | |
2635 | with the given arguments ARGS, until one of them returns nil. | |
2636 | Then we return nil. However, if they all return non-nil, we return non-nil. | |
9dbc9081 | 2637 | |
72e85d5d RS |
2638 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2639 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 PJ |
2640 | usage: (run-hook-with-args-until-failure HOOK &rest ARGS) */) |
2641 | (nargs, args) | |
ff936e53 SM |
2642 | int nargs; |
2643 | Lisp_Object *args; | |
2644 | { | |
2645 | return run_hook_with_args (nargs, args, until_failure); | |
2646 | } | |
2647 | ||
c933ea05 RS |
2648 | /* ARGS[0] should be a hook symbol. |
2649 | Call each of the functions in the hook value, passing each of them | |
2650 | as arguments all the rest of ARGS (all NARGS - 1 elements). | |
2651 | COND specifies a condition to test after each call | |
2652 | to decide whether to stop. | |
2653 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2654 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2655 | ||
2901f1d1 | 2656 | static Lisp_Object |
d3da34e0 | 2657 | run_hook_with_args (int nargs, Lisp_Object *args, enum run_hooks_condition cond) |
ff936e53 SM |
2658 | { |
2659 | Lisp_Object sym, val, ret; | |
fada05d6 | 2660 | struct gcpro gcpro1, gcpro2, gcpro3; |
b0b667cb | 2661 | |
f029ca5f RS |
2662 | /* If we are dying or still initializing, |
2663 | don't do anything--it would probably crash if we tried. */ | |
2664 | if (NILP (Vrun_hooks)) | |
caff32a7 | 2665 | return Qnil; |
f029ca5f | 2666 | |
b0b667cb | 2667 | sym = args[0]; |
aa681b51 | 2668 | val = find_symbol_value (sym); |
ff936e53 SM |
2669 | ret = (cond == until_failure ? Qt : Qnil); |
2670 | ||
b0b667cb | 2671 | if (EQ (val, Qunbound) || NILP (val)) |
ff936e53 | 2672 | return ret; |
03699b14 | 2673 | else if (!CONSP (val) || EQ (XCAR (val), Qlambda)) |
b0b667cb KH |
2674 | { |
2675 | args[0] = val; | |
2676 | return Ffuncall (nargs, args); | |
2677 | } | |
2678 | else | |
2679 | { | |
8932b1c2 | 2680 | Lisp_Object globals = Qnil; |
fada05d6 | 2681 | GCPRO3 (sym, val, globals); |
cb9d21f8 | 2682 | |
ff936e53 SM |
2683 | for (; |
2684 | CONSP (val) && ((cond == to_completion) | |
2685 | || (cond == until_success ? NILP (ret) | |
2686 | : !NILP (ret))); | |
03699b14 | 2687 | val = XCDR (val)) |
b0b667cb | 2688 | { |
03699b14 | 2689 | if (EQ (XCAR (val), Qt)) |
b0b667cb KH |
2690 | { |
2691 | /* t indicates this hook has a local binding; | |
2692 | it means to run the global binding too. */ | |
8932b1c2 CY |
2693 | globals = Fdefault_value (sym); |
2694 | if (NILP (globals)) continue; | |
b0b667cb | 2695 | |
8932b1c2 | 2696 | if (!CONSP (globals) || EQ (XCAR (globals), Qlambda)) |
b0b667cb | 2697 | { |
8932b1c2 CY |
2698 | args[0] = globals; |
2699 | ret = Ffuncall (nargs, args); | |
2700 | } | |
2701 | else | |
2702 | { | |
2703 | for (; | |
2704 | CONSP (globals) && ((cond == to_completion) | |
2705 | || (cond == until_success ? NILP (ret) | |
2706 | : !NILP (ret))); | |
2707 | globals = XCDR (globals)) | |
2708 | { | |
2709 | args[0] = XCAR (globals); | |
2710 | /* In a global value, t should not occur. If it does, we | |
2711 | must ignore it to avoid an endless loop. */ | |
2712 | if (!EQ (args[0], Qt)) | |
2713 | ret = Ffuncall (nargs, args); | |
2714 | } | |
b0b667cb KH |
2715 | } |
2716 | } | |
2717 | else | |
2718 | { | |
03699b14 | 2719 | args[0] = XCAR (val); |
ff936e53 | 2720 | ret = Ffuncall (nargs, args); |
b0b667cb KH |
2721 | } |
2722 | } | |
cb9d21f8 RS |
2723 | |
2724 | UNGCPRO; | |
ff936e53 | 2725 | return ret; |
b0b667cb KH |
2726 | } |
2727 | } | |
c933ea05 RS |
2728 | |
2729 | /* Run a hook symbol ARGS[0], but use FUNLIST instead of the actual | |
2730 | present value of that symbol. | |
2731 | Call each element of FUNLIST, | |
2732 | passing each of them the rest of ARGS. | |
2733 | The caller (or its caller, etc) must gcpro all of ARGS, | |
2734 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2735 | ||
2736 | Lisp_Object | |
d3da34e0 | 2737 | run_hook_list_with_args (Lisp_Object funlist, int nargs, Lisp_Object *args) |
c933ea05 RS |
2738 | { |
2739 | Lisp_Object sym; | |
2740 | Lisp_Object val; | |
fada05d6 KH |
2741 | Lisp_Object globals; |
2742 | struct gcpro gcpro1, gcpro2, gcpro3; | |
c933ea05 RS |
2743 | |
2744 | sym = args[0]; | |
fada05d6 KH |
2745 | globals = Qnil; |
2746 | GCPRO3 (sym, val, globals); | |
c933ea05 | 2747 | |
03699b14 | 2748 | for (val = funlist; CONSP (val); val = XCDR (val)) |
c933ea05 | 2749 | { |
03699b14 | 2750 | if (EQ (XCAR (val), Qt)) |
c933ea05 RS |
2751 | { |
2752 | /* t indicates this hook has a local binding; | |
2753 | it means to run the global binding too. */ | |
c933ea05 RS |
2754 | |
2755 | for (globals = Fdefault_value (sym); | |
2756 | CONSP (globals); | |
03699b14 | 2757 | globals = XCDR (globals)) |
c933ea05 | 2758 | { |
03699b14 | 2759 | args[0] = XCAR (globals); |
77d92e05 RS |
2760 | /* In a global value, t should not occur. If it does, we |
2761 | must ignore it to avoid an endless loop. */ | |
2762 | if (!EQ (args[0], Qt)) | |
2763 | Ffuncall (nargs, args); | |
c933ea05 RS |
2764 | } |
2765 | } | |
2766 | else | |
2767 | { | |
03699b14 | 2768 | args[0] = XCAR (val); |
c933ea05 RS |
2769 | Ffuncall (nargs, args); |
2770 | } | |
2771 | } | |
2772 | UNGCPRO; | |
2773 | return Qnil; | |
2774 | } | |
7d48558f RS |
2775 | |
2776 | /* Run the hook HOOK, giving each function the two args ARG1 and ARG2. */ | |
2777 | ||
2778 | void | |
d3da34e0 | 2779 | run_hook_with_args_2 (Lisp_Object hook, Lisp_Object arg1, Lisp_Object arg2) |
7d48558f RS |
2780 | { |
2781 | Lisp_Object temp[3]; | |
2782 | temp[0] = hook; | |
2783 | temp[1] = arg1; | |
2784 | temp[2] = arg2; | |
2785 | ||
2786 | Frun_hook_with_args (3, temp); | |
2787 | } | |
ff936e53 | 2788 | \f |
db9f0278 JB |
2789 | /* Apply fn to arg */ |
2790 | Lisp_Object | |
d3da34e0 | 2791 | apply1 (Lisp_Object fn, Lisp_Object arg) |
db9f0278 | 2792 | { |
a6e3fa71 JB |
2793 | struct gcpro gcpro1; |
2794 | ||
2795 | GCPRO1 (fn); | |
265a9e55 | 2796 | if (NILP (arg)) |
a6e3fa71 JB |
2797 | RETURN_UNGCPRO (Ffuncall (1, &fn)); |
2798 | gcpro1.nvars = 2; | |
db9f0278 JB |
2799 | { |
2800 | Lisp_Object args[2]; | |
2801 | args[0] = fn; | |
2802 | args[1] = arg; | |
a6e3fa71 JB |
2803 | gcpro1.var = args; |
2804 | RETURN_UNGCPRO (Fapply (2, args)); | |
db9f0278 | 2805 | } |
db9f0278 JB |
2806 | } |
2807 | ||
2808 | /* Call function fn on no arguments */ | |
2809 | Lisp_Object | |
d3da34e0 | 2810 | call0 (Lisp_Object fn) |
db9f0278 | 2811 | { |
a6e3fa71 JB |
2812 | struct gcpro gcpro1; |
2813 | ||
2814 | GCPRO1 (fn); | |
2815 | RETURN_UNGCPRO (Ffuncall (1, &fn)); | |
db9f0278 JB |
2816 | } |
2817 | ||
15285f9f | 2818 | /* Call function fn with 1 argument arg1 */ |
db9f0278 JB |
2819 | /* ARGSUSED */ |
2820 | Lisp_Object | |
d3da34e0 | 2821 | call1 (Lisp_Object fn, Lisp_Object arg1) |
db9f0278 | 2822 | { |
a6e3fa71 | 2823 | struct gcpro gcpro1; |
177c0ea7 | 2824 | Lisp_Object args[2]; |
a6e3fa71 | 2825 | |
db9f0278 | 2826 | args[0] = fn; |
15285f9f | 2827 | args[1] = arg1; |
a6e3fa71 JB |
2828 | GCPRO1 (args[0]); |
2829 | gcpro1.nvars = 2; | |
2830 | RETURN_UNGCPRO (Ffuncall (2, args)); | |
db9f0278 JB |
2831 | } |
2832 | ||
15285f9f | 2833 | /* Call function fn with 2 arguments arg1, arg2 */ |
db9f0278 JB |
2834 | /* ARGSUSED */ |
2835 | Lisp_Object | |
d3da34e0 | 2836 | call2 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2) |
db9f0278 | 2837 | { |
a6e3fa71 | 2838 | struct gcpro gcpro1; |
db9f0278 JB |
2839 | Lisp_Object args[3]; |
2840 | args[0] = fn; | |
15285f9f RS |
2841 | args[1] = arg1; |
2842 | args[2] = arg2; | |
a6e3fa71 JB |
2843 | GCPRO1 (args[0]); |
2844 | gcpro1.nvars = 3; | |
2845 | RETURN_UNGCPRO (Ffuncall (3, args)); | |
db9f0278 JB |
2846 | } |
2847 | ||
15285f9f | 2848 | /* Call function fn with 3 arguments arg1, arg2, arg3 */ |
db9f0278 JB |
2849 | /* ARGSUSED */ |
2850 | Lisp_Object | |
d3da34e0 | 2851 | call3 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
db9f0278 | 2852 | { |
a6e3fa71 | 2853 | struct gcpro gcpro1; |
db9f0278 JB |
2854 | Lisp_Object args[4]; |
2855 | args[0] = fn; | |
15285f9f RS |
2856 | args[1] = arg1; |
2857 | args[2] = arg2; | |
2858 | args[3] = arg3; | |
a6e3fa71 JB |
2859 | GCPRO1 (args[0]); |
2860 | gcpro1.nvars = 4; | |
2861 | RETURN_UNGCPRO (Ffuncall (4, args)); | |
db9f0278 JB |
2862 | } |
2863 | ||
15285f9f | 2864 | /* Call function fn with 4 arguments arg1, arg2, arg3, arg4 */ |
a5a44b91 JB |
2865 | /* ARGSUSED */ |
2866 | Lisp_Object | |
d3da34e0 JB |
2867 | call4 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2868 | Lisp_Object arg4) | |
a5a44b91 JB |
2869 | { |
2870 | struct gcpro gcpro1; | |
a5a44b91 JB |
2871 | Lisp_Object args[5]; |
2872 | args[0] = fn; | |
15285f9f RS |
2873 | args[1] = arg1; |
2874 | args[2] = arg2; | |
2875 | args[3] = arg3; | |
2876 | args[4] = arg4; | |
a5a44b91 JB |
2877 | GCPRO1 (args[0]); |
2878 | gcpro1.nvars = 5; | |
2879 | RETURN_UNGCPRO (Ffuncall (5, args)); | |
a5a44b91 JB |
2880 | } |
2881 | ||
15285f9f RS |
2882 | /* Call function fn with 5 arguments arg1, arg2, arg3, arg4, arg5 */ |
2883 | /* ARGSUSED */ | |
2884 | Lisp_Object | |
d3da34e0 JB |
2885 | call5 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2886 | Lisp_Object arg4, Lisp_Object arg5) | |
15285f9f RS |
2887 | { |
2888 | struct gcpro gcpro1; | |
15285f9f RS |
2889 | Lisp_Object args[6]; |
2890 | args[0] = fn; | |
2891 | args[1] = arg1; | |
2892 | args[2] = arg2; | |
2893 | args[3] = arg3; | |
2894 | args[4] = arg4; | |
2895 | args[5] = arg5; | |
2896 | GCPRO1 (args[0]); | |
2897 | gcpro1.nvars = 6; | |
2898 | RETURN_UNGCPRO (Ffuncall (6, args)); | |
15285f9f RS |
2899 | } |
2900 | ||
2901 | /* Call function fn with 6 arguments arg1, arg2, arg3, arg4, arg5, arg6 */ | |
2902 | /* ARGSUSED */ | |
2903 | Lisp_Object | |
d3da34e0 JB |
2904 | call6 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2905 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6) | |
15285f9f RS |
2906 | { |
2907 | struct gcpro gcpro1; | |
15285f9f RS |
2908 | Lisp_Object args[7]; |
2909 | args[0] = fn; | |
2910 | args[1] = arg1; | |
2911 | args[2] = arg2; | |
2912 | args[3] = arg3; | |
2913 | args[4] = arg4; | |
2914 | args[5] = arg5; | |
2915 | args[6] = arg6; | |
2916 | GCPRO1 (args[0]); | |
2917 | gcpro1.nvars = 7; | |
2918 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
15285f9f RS |
2919 | } |
2920 | ||
574c05e2 KK |
2921 | /* Call function fn with 7 arguments arg1, arg2, arg3, arg4, arg5, arg6, arg7 */ |
2922 | /* ARGSUSED */ | |
2923 | Lisp_Object | |
d3da34e0 JB |
2924 | call7 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2925 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6, Lisp_Object arg7) | |
574c05e2 KK |
2926 | { |
2927 | struct gcpro gcpro1; | |
574c05e2 KK |
2928 | Lisp_Object args[8]; |
2929 | args[0] = fn; | |
2930 | args[1] = arg1; | |
2931 | args[2] = arg2; | |
2932 | args[3] = arg3; | |
2933 | args[4] = arg4; | |
2934 | args[5] = arg5; | |
2935 | args[6] = arg6; | |
2936 | args[7] = arg7; | |
2937 | GCPRO1 (args[0]); | |
2938 | gcpro1.nvars = 8; | |
2939 | RETURN_UNGCPRO (Ffuncall (8, args)); | |
574c05e2 KK |
2940 | } |
2941 | ||
6c2ef893 RS |
2942 | /* The caller should GCPRO all the elements of ARGS. */ |
2943 | ||
db9f0278 | 2944 | DEFUN ("funcall", Ffuncall, Sfuncall, 1, MANY, 0, |
9dbc9081 PJ |
2945 | doc: /* Call first argument as a function, passing remaining arguments to it. |
2946 | Return the value that function returns. | |
2947 | Thus, (funcall 'cons 'x 'y) returns (x . y). | |
2948 | usage: (funcall FUNCTION &rest ARGUMENTS) */) | |
2949 | (nargs, args) | |
db9f0278 JB |
2950 | int nargs; |
2951 | Lisp_Object *args; | |
2952 | { | |
8788120f | 2953 | Lisp_Object fun, original_fun; |
db9f0278 JB |
2954 | Lisp_Object funcar; |
2955 | int numargs = nargs - 1; | |
2956 | Lisp_Object lisp_numargs; | |
2957 | Lisp_Object val; | |
2958 | struct backtrace backtrace; | |
2959 | register Lisp_Object *internal_args; | |
2960 | register int i; | |
2961 | ||
2962 | QUIT; | |
ee830945 RS |
2963 | if ((consing_since_gc > gc_cons_threshold |
2964 | && consing_since_gc > gc_relative_threshold) | |
2965 | || | |
2966 | (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold)) | |
a6e3fa71 | 2967 | Fgarbage_collect (); |
db9f0278 JB |
2968 | |
2969 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2970 | { | |
2971 | if (max_lisp_eval_depth < 100) | |
2972 | max_lisp_eval_depth = 100; | |
2973 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2974 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2975 | } |
2976 | ||
2977 | backtrace.next = backtrace_list; | |
2978 | backtrace_list = &backtrace; | |
2979 | backtrace.function = &args[0]; | |
2980 | backtrace.args = &args[1]; | |
2981 | backtrace.nargs = nargs - 1; | |
2982 | backtrace.evalargs = 0; | |
2983 | backtrace.debug_on_exit = 0; | |
2984 | ||
2985 | if (debug_on_next_call) | |
2986 | do_debug_on_call (Qlambda); | |
2987 | ||
fff3ff9c KS |
2988 | CHECK_CONS_LIST (); |
2989 | ||
8788120f KS |
2990 | original_fun = args[0]; |
2991 | ||
db9f0278 JB |
2992 | retry: |
2993 | ||
8788120f KS |
2994 | /* Optimize for no indirection. */ |
2995 | fun = original_fun; | |
2996 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
2997 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) | |
2998 | fun = indirect_function (fun); | |
db9f0278 | 2999 | |
90165123 | 3000 | if (SUBRP (fun)) |
db9f0278 | 3001 | { |
fff3ff9c | 3002 | if (numargs < XSUBR (fun)->min_args |
db9f0278 JB |
3003 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) |
3004 | { | |
a631e24c | 3005 | XSETFASTINT (lisp_numargs, numargs); |
734d55a2 | 3006 | xsignal2 (Qwrong_number_of_arguments, original_fun, lisp_numargs); |
db9f0278 JB |
3007 | } |
3008 | ||
3009 | if (XSUBR (fun)->max_args == UNEVALLED) | |
734d55a2 | 3010 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
3011 | |
3012 | if (XSUBR (fun)->max_args == MANY) | |
3013 | { | |
c0f2f16b | 3014 | val = (XSUBR (fun)->function.am) (numargs, args + 1); |
db9f0278 JB |
3015 | goto done; |
3016 | } | |
3017 | ||
3018 | if (XSUBR (fun)->max_args > numargs) | |
3019 | { | |
3020 | internal_args = (Lisp_Object *) alloca (XSUBR (fun)->max_args * sizeof (Lisp_Object)); | |
3021 | bcopy (args + 1, internal_args, numargs * sizeof (Lisp_Object)); | |
3022 | for (i = numargs; i < XSUBR (fun)->max_args; i++) | |
3023 | internal_args[i] = Qnil; | |
3024 | } | |
3025 | else | |
3026 | internal_args = args + 1; | |
3027 | switch (XSUBR (fun)->max_args) | |
3028 | { | |
3029 | case 0: | |
c0f2f16b | 3030 | val = (XSUBR (fun)->function.a0) (); |
db9f0278 JB |
3031 | goto done; |
3032 | case 1: | |
c0f2f16b | 3033 | val = (XSUBR (fun)->function.a1) (internal_args[0]); |
db9f0278 JB |
3034 | goto done; |
3035 | case 2: | |
c0f2f16b | 3036 | val = (XSUBR (fun)->function.a2) (internal_args[0], internal_args[1]); |
db9f0278 JB |
3037 | goto done; |
3038 | case 3: | |
c0f2f16b DN |
3039 | val = (XSUBR (fun)->function.a3) (internal_args[0], internal_args[1], |
3040 | internal_args[2]); | |
db9f0278 JB |
3041 | goto done; |
3042 | case 4: | |
c0f2f16b DN |
3043 | val = (XSUBR (fun)->function.a4) (internal_args[0], internal_args[1], |
3044 | internal_args[2], internal_args[3]); | |
db9f0278 JB |
3045 | goto done; |
3046 | case 5: | |
c0f2f16b DN |
3047 | val = (XSUBR (fun)->function.a5) (internal_args[0], internal_args[1], |
3048 | internal_args[2], internal_args[3], | |
3049 | internal_args[4]); | |
db9f0278 JB |
3050 | goto done; |
3051 | case 6: | |
c0f2f16b DN |
3052 | val = (XSUBR (fun)->function.a6) (internal_args[0], internal_args[1], |
3053 | internal_args[2], internal_args[3], | |
3054 | internal_args[4], internal_args[5]); | |
db9f0278 | 3055 | goto done; |
15c65264 | 3056 | case 7: |
c0f2f16b DN |
3057 | val = (XSUBR (fun)->function.a7) (internal_args[0], internal_args[1], |
3058 | internal_args[2], internal_args[3], | |
3059 | internal_args[4], internal_args[5], | |
3060 | internal_args[6]); | |
15c65264 | 3061 | goto done; |
db9f0278 | 3062 | |
166c822d | 3063 | case 8: |
c0f2f16b DN |
3064 | val = (XSUBR (fun)->function.a8) (internal_args[0], internal_args[1], |
3065 | internal_args[2], internal_args[3], | |
3066 | internal_args[4], internal_args[5], | |
3067 | internal_args[6], internal_args[7]); | |
166c822d KH |
3068 | goto done; |
3069 | ||
db9f0278 | 3070 | default: |
70ee42f7 | 3071 | |
166c822d | 3072 | /* If a subr takes more than 8 arguments without using MANY |
177c0ea7 | 3073 | or UNEVALLED, we need to extend this function to support it. |
70ee42f7 JB |
3074 | Until this is done, there is no way to call the function. */ |
3075 | abort (); | |
db9f0278 JB |
3076 | } |
3077 | } | |
90165123 | 3078 | if (COMPILEDP (fun)) |
db9f0278 JB |
3079 | val = funcall_lambda (fun, numargs, args + 1); |
3080 | else | |
3081 | { | |
8788120f | 3082 | if (EQ (fun, Qunbound)) |
734d55a2 | 3083 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 3084 | if (!CONSP (fun)) |
734d55a2 KS |
3085 | xsignal1 (Qinvalid_function, original_fun); |
3086 | funcar = XCAR (fun); | |
90165123 | 3087 | if (!SYMBOLP (funcar)) |
734d55a2 | 3088 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
3089 | if (EQ (funcar, Qlambda)) |
3090 | val = funcall_lambda (fun, numargs, args + 1); | |
db9f0278 JB |
3091 | else if (EQ (funcar, Qautoload)) |
3092 | { | |
8788120f | 3093 | do_autoload (fun, original_fun); |
fff3ff9c | 3094 | CHECK_CONS_LIST (); |
db9f0278 JB |
3095 | goto retry; |
3096 | } | |
3097 | else | |
734d55a2 | 3098 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
3099 | } |
3100 | done: | |
c1788fbc | 3101 | CHECK_CONS_LIST (); |
db9f0278 JB |
3102 | lisp_eval_depth--; |
3103 | if (backtrace.debug_on_exit) | |
3104 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
3105 | backtrace_list = backtrace.next; | |
3106 | return val; | |
3107 | } | |
3108 | \f | |
3109 | Lisp_Object | |
d3da34e0 | 3110 | apply_lambda (Lisp_Object fun, Lisp_Object args, int eval_flag) |
db9f0278 JB |
3111 | { |
3112 | Lisp_Object args_left; | |
3113 | Lisp_Object numargs; | |
3114 | register Lisp_Object *arg_vector; | |
3115 | struct gcpro gcpro1, gcpro2, gcpro3; | |
3116 | register int i; | |
3117 | register Lisp_Object tem; | |
3118 | ||
3119 | numargs = Flength (args); | |
3120 | arg_vector = (Lisp_Object *) alloca (XINT (numargs) * sizeof (Lisp_Object)); | |
3121 | args_left = args; | |
3122 | ||
3123 | GCPRO3 (*arg_vector, args_left, fun); | |
3124 | gcpro1.nvars = 0; | |
3125 | ||
3126 | for (i = 0; i < XINT (numargs);) | |
3127 | { | |
3128 | tem = Fcar (args_left), args_left = Fcdr (args_left); | |
3129 | if (eval_flag) tem = Feval (tem); | |
3130 | arg_vector[i++] = tem; | |
3131 | gcpro1.nvars = i; | |
3132 | } | |
3133 | ||
3134 | UNGCPRO; | |
3135 | ||
3136 | if (eval_flag) | |
3137 | { | |
3138 | backtrace_list->args = arg_vector; | |
3139 | backtrace_list->nargs = i; | |
3140 | } | |
3141 | backtrace_list->evalargs = 0; | |
3142 | tem = funcall_lambda (fun, XINT (numargs), arg_vector); | |
3143 | ||
3144 | /* Do the debug-on-exit now, while arg_vector still exists. */ | |
3145 | if (backtrace_list->debug_on_exit) | |
3146 | tem = call_debugger (Fcons (Qexit, Fcons (tem, Qnil))); | |
3147 | /* Don't do it again when we return to eval. */ | |
3148 | backtrace_list->debug_on_exit = 0; | |
3149 | return tem; | |
3150 | } | |
3151 | ||
3152 | /* Apply a Lisp function FUN to the NARGS evaluated arguments in ARG_VECTOR | |
3153 | and return the result of evaluation. | |
3154 | FUN must be either a lambda-expression or a compiled-code object. */ | |
3155 | ||
2901f1d1 | 3156 | static Lisp_Object |
d3da34e0 | 3157 | funcall_lambda (Lisp_Object fun, int nargs, register Lisp_Object *arg_vector) |
db9f0278 | 3158 | { |
9ab90667 | 3159 | Lisp_Object val, syms_left, next; |
aed13378 | 3160 | int count = SPECPDL_INDEX (); |
9ab90667 | 3161 | int i, optional, rest; |
db9f0278 | 3162 | |
90165123 | 3163 | if (CONSP (fun)) |
9ab90667 GM |
3164 | { |
3165 | syms_left = XCDR (fun); | |
3166 | if (CONSP (syms_left)) | |
3167 | syms_left = XCAR (syms_left); | |
3168 | else | |
734d55a2 | 3169 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 3170 | } |
90165123 | 3171 | else if (COMPILEDP (fun)) |
845975f5 | 3172 | syms_left = AREF (fun, COMPILED_ARGLIST); |
9ab90667 GM |
3173 | else |
3174 | abort (); | |
db9f0278 | 3175 | |
9ab90667 GM |
3176 | i = optional = rest = 0; |
3177 | for (; CONSP (syms_left); syms_left = XCDR (syms_left)) | |
db9f0278 JB |
3178 | { |
3179 | QUIT; | |
177c0ea7 | 3180 | |
9ab90667 | 3181 | next = XCAR (syms_left); |
8788120f | 3182 | if (!SYMBOLP (next)) |
734d55a2 | 3183 | xsignal1 (Qinvalid_function, fun); |
177c0ea7 | 3184 | |
db9f0278 JB |
3185 | if (EQ (next, Qand_rest)) |
3186 | rest = 1; | |
3187 | else if (EQ (next, Qand_optional)) | |
3188 | optional = 1; | |
3189 | else if (rest) | |
3190 | { | |
9ffa21d4 | 3191 | specbind (next, Flist (nargs - i, &arg_vector[i])); |
db9f0278 JB |
3192 | i = nargs; |
3193 | } | |
3194 | else if (i < nargs) | |
9ab90667 | 3195 | specbind (next, arg_vector[i++]); |
db9f0278 | 3196 | else if (!optional) |
734d55a2 | 3197 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 JB |
3198 | else |
3199 | specbind (next, Qnil); | |
3200 | } | |
3201 | ||
9ab90667 | 3202 | if (!NILP (syms_left)) |
734d55a2 | 3203 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 3204 | else if (i < nargs) |
734d55a2 | 3205 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 | 3206 | |
90165123 | 3207 | if (CONSP (fun)) |
9ab90667 | 3208 | val = Fprogn (XCDR (XCDR (fun))); |
db9f0278 | 3209 | else |
ca248607 RS |
3210 | { |
3211 | /* If we have not actually read the bytecode string | |
3212 | and constants vector yet, fetch them from the file. */ | |
845975f5 | 3213 | if (CONSP (AREF (fun, COMPILED_BYTECODE))) |
661c7d6e | 3214 | Ffetch_bytecode (fun); |
845975f5 SM |
3215 | val = Fbyte_code (AREF (fun, COMPILED_BYTECODE), |
3216 | AREF (fun, COMPILED_CONSTANTS), | |
3217 | AREF (fun, COMPILED_STACK_DEPTH)); | |
ca248607 | 3218 | } |
177c0ea7 | 3219 | |
db9f0278 JB |
3220 | return unbind_to (count, val); |
3221 | } | |
661c7d6e KH |
3222 | |
3223 | DEFUN ("fetch-bytecode", Ffetch_bytecode, Sfetch_bytecode, | |
9dbc9081 PJ |
3224 | 1, 1, 0, |
3225 | doc: /* If byte-compiled OBJECT is lazy-loaded, fetch it now. */) | |
3226 | (object) | |
661c7d6e KH |
3227 | Lisp_Object object; |
3228 | { | |
3229 | Lisp_Object tem; | |
3230 | ||
845975f5 | 3231 | if (COMPILEDP (object) && CONSP (AREF (object, COMPILED_BYTECODE))) |
661c7d6e | 3232 | { |
845975f5 | 3233 | tem = read_doc_string (AREF (object, COMPILED_BYTECODE)); |
5bbdb090 | 3234 | if (!CONSP (tem)) |
845975f5 SM |
3235 | { |
3236 | tem = AREF (object, COMPILED_BYTECODE); | |
3237 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
d5db4077 | 3238 | error ("Invalid byte code in %s", SDATA (XCAR (tem))); |
845975f5 SM |
3239 | else |
3240 | error ("Invalid byte code"); | |
3241 | } | |
3ae565b3 SM |
3242 | ASET (object, COMPILED_BYTECODE, XCAR (tem)); |
3243 | ASET (object, COMPILED_CONSTANTS, XCDR (tem)); | |
661c7d6e KH |
3244 | } |
3245 | return object; | |
3246 | } | |
db9f0278 JB |
3247 | \f |
3248 | void | |
d3da34e0 | 3249 | grow_specpdl (void) |
db9f0278 | 3250 | { |
aed13378 | 3251 | register int count = SPECPDL_INDEX (); |
db9f0278 JB |
3252 | if (specpdl_size >= max_specpdl_size) |
3253 | { | |
3254 | if (max_specpdl_size < 400) | |
3255 | max_specpdl_size = 400; | |
3256 | if (specpdl_size >= max_specpdl_size) | |
734d55a2 | 3257 | signal_error ("Variable binding depth exceeds max-specpdl-size", Qnil); |
db9f0278 JB |
3258 | } |
3259 | specpdl_size *= 2; | |
3260 | if (specpdl_size > max_specpdl_size) | |
3261 | specpdl_size = max_specpdl_size; | |
3262 | specpdl = (struct specbinding *) xrealloc (specpdl, specpdl_size * sizeof (struct specbinding)); | |
3263 | specpdl_ptr = specpdl + count; | |
3264 | } | |
3265 | ||
4e2db1fe SM |
3266 | /* specpdl_ptr->symbol is a field which describes which variable is |
3267 | let-bound, so it can be properly undone when we unbind_to. | |
3268 | It can have the following two shapes: | |
3269 | - SYMBOL : if it's a plain symbol, it means that we have let-bound | |
3270 | a symbol that is not buffer-local (at least at the time | |
3271 | the let binding started). Note also that it should not be | |
3272 | aliased (i.e. when let-binding V1 that's aliased to V2, we want | |
3273 | to record V2 here). | |
3274 | - (SYMBOL WHERE . BUFFER) : this means that it is a let-binding for | |
3275 | variable SYMBOL which can be buffer-local. WHERE tells us | |
3276 | which buffer is affected (or nil if the let-binding affects the | |
3277 | global value of the variable) and BUFFER tells us which buffer was | |
3278 | current (i.e. if WHERE is non-nil, then BUFFER==WHERE, otherwise | |
3279 | BUFFER did not yet have a buffer-local value). */ | |
3280 | ||
db9f0278 | 3281 | void |
d3da34e0 | 3282 | specbind (Lisp_Object symbol, Lisp_Object value) |
db9f0278 | 3283 | { |
ce5b453a SM |
3284 | struct Lisp_Symbol *sym; |
3285 | ||
3286 | eassert (!handling_signal); | |
db9f0278 | 3287 | |
b7826503 | 3288 | CHECK_SYMBOL (symbol); |
ce5b453a | 3289 | sym = XSYMBOL (symbol); |
db9f0278 JB |
3290 | if (specpdl_ptr == specpdl + specpdl_size) |
3291 | grow_specpdl (); | |
719177b3 | 3292 | |
ce5b453a SM |
3293 | start: |
3294 | switch (sym->redirect) | |
719177b3 | 3295 | { |
ce5b453a SM |
3296 | case SYMBOL_VARALIAS: |
3297 | sym = indirect_variable (sym); XSETSYMBOL (symbol, sym); goto start; | |
3298 | case SYMBOL_PLAINVAL: | |
3299 | { /* The most common case is that of a non-constant symbol with a | |
3300 | trivial value. Make that as fast as we can. */ | |
3301 | specpdl_ptr->symbol = symbol; | |
3302 | specpdl_ptr->old_value = SYMBOL_VAL (sym); | |
3303 | specpdl_ptr->func = NULL; | |
3304 | ++specpdl_ptr; | |
3305 | if (!sym->constant) | |
3306 | SET_SYMBOL_VAL (sym, value); | |
eb700b82 | 3307 | else |
94b612ad | 3308 | set_internal (symbol, value, Qnil, 1); |
ce5b453a | 3309 | break; |
9ab90667 | 3310 | } |
4e2db1fe SM |
3311 | case SYMBOL_LOCALIZED: |
3312 | if (SYMBOL_BLV (sym)->frame_local) | |
3313 | error ("Frame-local vars cannot be let-bound"); | |
3314 | case SYMBOL_FORWARDED: | |
ce5b453a SM |
3315 | { |
3316 | Lisp_Object ovalue = find_symbol_value (symbol); | |
3317 | specpdl_ptr->func = 0; | |
3318 | specpdl_ptr->old_value = ovalue; | |
3319 | ||
3320 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3321 | || (EQ (SYMBOL_BLV (sym)->where, | |
3322 | SYMBOL_BLV (sym)->frame_local ? | |
3323 | Fselected_frame () : Fcurrent_buffer ()))); | |
3324 | ||
3325 | if (sym->redirect == SYMBOL_LOCALIZED | |
3326 | || BUFFER_OBJFWDP (SYMBOL_FWD (sym))) | |
3327 | { | |
3328 | Lisp_Object where, cur_buf = Fcurrent_buffer (); | |
3329 | ||
3330 | /* For a local variable, record both the symbol and which | |
3331 | buffer's or frame's value we are saving. */ | |
3332 | if (!NILP (Flocal_variable_p (symbol, Qnil))) | |
3333 | { | |
3334 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3335 | || (BLV_FOUND (SYMBOL_BLV (sym)) | |
3336 | && EQ (cur_buf, SYMBOL_BLV (sym)->where))); | |
3337 | where = cur_buf; | |
3338 | } | |
3339 | else if (sym->redirect == SYMBOL_LOCALIZED | |
3340 | && BLV_FOUND (SYMBOL_BLV (sym))) | |
3341 | where = SYMBOL_BLV (sym)->where; | |
3342 | else | |
3343 | where = Qnil; | |
3344 | ||
3345 | /* We're not using the `unused' slot in the specbinding | |
3346 | structure because this would mean we have to do more | |
3347 | work for simple variables. */ | |
3348 | /* FIXME: The third value `current_buffer' is only used in | |
3349 | let_shadows_buffer_binding_p which is itself only used | |
3350 | in set_internal for local_if_set. */ | |
4e2db1fe | 3351 | eassert (NILP (where) || EQ (where, cur_buf)); |
ce5b453a SM |
3352 | specpdl_ptr->symbol = Fcons (symbol, Fcons (where, cur_buf)); |
3353 | ||
3354 | /* If SYMBOL is a per-buffer variable which doesn't have a | |
3355 | buffer-local value here, make the `let' change the global | |
3356 | value by changing the value of SYMBOL in all buffers not | |
3357 | having their own value. This is consistent with what | |
3358 | happens with other buffer-local variables. */ | |
3359 | if (NILP (where) | |
3360 | && sym->redirect == SYMBOL_FORWARDED) | |
3361 | { | |
3362 | eassert (BUFFER_OBJFWDP (SYMBOL_FWD (sym))); | |
3363 | ++specpdl_ptr; | |
3364 | Fset_default (symbol, value); | |
3365 | return; | |
3366 | } | |
3367 | } | |
3368 | else | |
3369 | specpdl_ptr->symbol = symbol; | |
3370 | ||
3371 | specpdl_ptr++; | |
94b612ad | 3372 | set_internal (symbol, value, Qnil, 1); |
ce5b453a SM |
3373 | break; |
3374 | } | |
3375 | default: abort (); | |
9ab90667 | 3376 | } |
db9f0278 JB |
3377 | } |
3378 | ||
3379 | void | |
d3da34e0 | 3380 | record_unwind_protect (Lisp_Object (*function) (Lisp_Object), Lisp_Object arg) |
db9f0278 | 3381 | { |
9ba8e10d CY |
3382 | eassert (!handling_signal); |
3383 | ||
db9f0278 JB |
3384 | if (specpdl_ptr == specpdl + specpdl_size) |
3385 | grow_specpdl (); | |
3386 | specpdl_ptr->func = function; | |
3387 | specpdl_ptr->symbol = Qnil; | |
3388 | specpdl_ptr->old_value = arg; | |
3389 | specpdl_ptr++; | |
3390 | } | |
3391 | ||
3392 | Lisp_Object | |
d3da34e0 | 3393 | unbind_to (int count, Lisp_Object value) |
db9f0278 | 3394 | { |
5a073f50 KS |
3395 | Lisp_Object quitf = Vquit_flag; |
3396 | struct gcpro gcpro1, gcpro2; | |
db9f0278 | 3397 | |
5a073f50 | 3398 | GCPRO2 (value, quitf); |
db9f0278 JB |
3399 | Vquit_flag = Qnil; |
3400 | ||
3401 | while (specpdl_ptr != specpdl + count) | |
3402 | { | |
611a8f8c RS |
3403 | /* Copy the binding, and decrement specpdl_ptr, before we do |
3404 | the work to unbind it. We decrement first | |
3405 | so that an error in unbinding won't try to unbind | |
3406 | the same entry again, and we copy the binding first | |
3407 | in case more bindings are made during some of the code we run. */ | |
eb700b82 | 3408 | |
45f266dc DL |
3409 | struct specbinding this_binding; |
3410 | this_binding = *--specpdl_ptr; | |
611a8f8c RS |
3411 | |
3412 | if (this_binding.func != 0) | |
3413 | (*this_binding.func) (this_binding.old_value); | |
0967b4b0 GM |
3414 | /* If the symbol is a list, it is really (SYMBOL WHERE |
3415 | . CURRENT-BUFFER) where WHERE is either nil, a buffer, or a | |
3416 | frame. If WHERE is a buffer or frame, this indicates we | |
1b1acc13 PJ |
3417 | bound a variable that had a buffer-local or frame-local |
3418 | binding. WHERE nil means that the variable had the default | |
0967b4b0 GM |
3419 | value when it was bound. CURRENT-BUFFER is the buffer that |
3420 | was current when the variable was bound. */ | |
611a8f8c | 3421 | else if (CONSP (this_binding.symbol)) |
719177b3 | 3422 | { |
eb700b82 | 3423 | Lisp_Object symbol, where; |
719177b3 | 3424 | |
611a8f8c RS |
3425 | symbol = XCAR (this_binding.symbol); |
3426 | where = XCAR (XCDR (this_binding.symbol)); | |
719177b3 | 3427 | |
eb700b82 | 3428 | if (NILP (where)) |
611a8f8c | 3429 | Fset_default (symbol, this_binding.old_value); |
94b612ad SM |
3430 | /* If `where' is non-nil, reset the value in the appropriate |
3431 | local binding, but only if that binding still exists. */ | |
4e2db1fe SM |
3432 | else if (BUFFERP (where) |
3433 | ? !NILP (Flocal_variable_p (symbol, where)) | |
3434 | : !NILP (Fassq (symbol, XFRAME (where)->param_alist))) | |
3435 | set_internal (symbol, this_binding.old_value, where, 1); | |
719177b3 | 3436 | } |
94b612ad SM |
3437 | /* If variable has a trivial value (no forwarding), we can |
3438 | just set it. No need to check for constant symbols here, | |
3439 | since that was already done by specbind. */ | |
3440 | else if (XSYMBOL (this_binding.symbol)->redirect == SYMBOL_PLAINVAL) | |
3441 | SET_SYMBOL_VAL (XSYMBOL (this_binding.symbol), | |
3442 | this_binding.old_value); | |
db9f0278 | 3443 | else |
94b612ad SM |
3444 | /* NOTE: we only ever come here if make_local_foo was used for |
3445 | the first time on this var within this let. */ | |
3446 | Fset_default (this_binding.symbol, this_binding.old_value); | |
db9f0278 | 3447 | } |
177c0ea7 | 3448 | |
5a073f50 KS |
3449 | if (NILP (Vquit_flag) && !NILP (quitf)) |
3450 | Vquit_flag = quitf; | |
db9f0278 JB |
3451 | |
3452 | UNGCPRO; | |
db9f0278 JB |
3453 | return value; |
3454 | } | |
3455 | \f | |
db9f0278 | 3456 | DEFUN ("backtrace-debug", Fbacktrace_debug, Sbacktrace_debug, 2, 2, 0, |
9dbc9081 PJ |
3457 | doc: /* Set the debug-on-exit flag of eval frame LEVEL levels down to FLAG. |
3458 | The debugger is entered when that frame exits, if the flag is non-nil. */) | |
3459 | (level, flag) | |
db9f0278 JB |
3460 | Lisp_Object level, flag; |
3461 | { | |
3462 | register struct backtrace *backlist = backtrace_list; | |
3463 | register int i; | |
3464 | ||
b7826503 | 3465 | CHECK_NUMBER (level); |
db9f0278 JB |
3466 | |
3467 | for (i = 0; backlist && i < XINT (level); i++) | |
3468 | { | |
3469 | backlist = backlist->next; | |
3470 | } | |
3471 | ||
3472 | if (backlist) | |
265a9e55 | 3473 | backlist->debug_on_exit = !NILP (flag); |
db9f0278 JB |
3474 | |
3475 | return flag; | |
3476 | } | |
3477 | ||
3478 | DEFUN ("backtrace", Fbacktrace, Sbacktrace, 0, 0, "", | |
9dbc9081 PJ |
3479 | doc: /* Print a trace of Lisp function calls currently active. |
3480 | Output stream used is value of `standard-output'. */) | |
3481 | () | |
db9f0278 JB |
3482 | { |
3483 | register struct backtrace *backlist = backtrace_list; | |
3484 | register int i; | |
3485 | Lisp_Object tail; | |
3486 | Lisp_Object tem; | |
3487 | extern Lisp_Object Vprint_level; | |
3488 | struct gcpro gcpro1; | |
3489 | ||
a631e24c | 3490 | XSETFASTINT (Vprint_level, 3); |
db9f0278 JB |
3491 | |
3492 | tail = Qnil; | |
3493 | GCPRO1 (tail); | |
3494 | ||
3495 | while (backlist) | |
3496 | { | |
3497 | write_string (backlist->debug_on_exit ? "* " : " ", 2); | |
3498 | if (backlist->nargs == UNEVALLED) | |
3499 | { | |
3500 | Fprin1 (Fcons (*backlist->function, *backlist->args), Qnil); | |
b6703b02 | 3501 | write_string ("\n", -1); |
db9f0278 JB |
3502 | } |
3503 | else | |
3504 | { | |
3505 | tem = *backlist->function; | |
3506 | Fprin1 (tem, Qnil); /* This can QUIT */ | |
3507 | write_string ("(", -1); | |
3508 | if (backlist->nargs == MANY) | |
3509 | { | |
3510 | for (tail = *backlist->args, i = 0; | |
265a9e55 | 3511 | !NILP (tail); |
db9f0278 JB |
3512 | tail = Fcdr (tail), i++) |
3513 | { | |
3514 | if (i) write_string (" ", -1); | |
3515 | Fprin1 (Fcar (tail), Qnil); | |
3516 | } | |
3517 | } | |
3518 | else | |
3519 | { | |
3520 | for (i = 0; i < backlist->nargs; i++) | |
3521 | { | |
3522 | if (i) write_string (" ", -1); | |
3523 | Fprin1 (backlist->args[i], Qnil); | |
3524 | } | |
3525 | } | |
b6703b02 | 3526 | write_string (")\n", -1); |
db9f0278 | 3527 | } |
db9f0278 JB |
3528 | backlist = backlist->next; |
3529 | } | |
3530 | ||
3531 | Vprint_level = Qnil; | |
3532 | UNGCPRO; | |
3533 | return Qnil; | |
3534 | } | |
3535 | ||
17401c97 | 3536 | DEFUN ("backtrace-frame", Fbacktrace_frame, Sbacktrace_frame, 1, 1, NULL, |
9dbc9081 PJ |
3537 | doc: /* Return the function and arguments NFRAMES up from current execution point. |
3538 | If that frame has not evaluated the arguments yet (or is a special form), | |
3539 | the value is (nil FUNCTION ARG-FORMS...). | |
3540 | If that frame has evaluated its arguments and called its function already, | |
3541 | the value is (t FUNCTION ARG-VALUES...). | |
3542 | A &rest arg is represented as the tail of the list ARG-VALUES. | |
3543 | FUNCTION is whatever was supplied as car of evaluated list, | |
3544 | or a lambda expression for macro calls. | |
3545 | If NFRAMES is more than the number of frames, the value is nil. */) | |
3546 | (nframes) | |
db9f0278 JB |
3547 | Lisp_Object nframes; |
3548 | { | |
3549 | register struct backtrace *backlist = backtrace_list; | |
3550 | register int i; | |
3551 | Lisp_Object tem; | |
3552 | ||
b7826503 | 3553 | CHECK_NATNUM (nframes); |
db9f0278 JB |
3554 | |
3555 | /* Find the frame requested. */ | |
b6703b02 | 3556 | for (i = 0; backlist && i < XFASTINT (nframes); i++) |
db9f0278 JB |
3557 | backlist = backlist->next; |
3558 | ||
3559 | if (!backlist) | |
3560 | return Qnil; | |
3561 | if (backlist->nargs == UNEVALLED) | |
3562 | return Fcons (Qnil, Fcons (*backlist->function, *backlist->args)); | |
3563 | else | |
3564 | { | |
3565 | if (backlist->nargs == MANY) | |
3566 | tem = *backlist->args; | |
3567 | else | |
3568 | tem = Flist (backlist->nargs, backlist->args); | |
3569 | ||
3570 | return Fcons (Qt, Fcons (*backlist->function, tem)); | |
3571 | } | |
3572 | } | |
a2ff3819 | 3573 | |
db9f0278 | 3574 | \f |
4ce0541e | 3575 | void |
d3da34e0 | 3576 | mark_backtrace (void) |
4ce0541e SM |
3577 | { |
3578 | register struct backtrace *backlist; | |
3579 | register int i; | |
3580 | ||
3581 | for (backlist = backtrace_list; backlist; backlist = backlist->next) | |
3582 | { | |
3583 | mark_object (*backlist->function); | |
3584 | ||
3585 | if (backlist->nargs == UNEVALLED || backlist->nargs == MANY) | |
3586 | i = 0; | |
3587 | else | |
3588 | i = backlist->nargs - 1; | |
3589 | for (; i >= 0; i--) | |
3590 | mark_object (backlist->args[i]); | |
3591 | } | |
3592 | } | |
3593 | ||
dfcf069d | 3594 | void |
d3da34e0 | 3595 | syms_of_eval (void) |
db9f0278 JB |
3596 | { |
3597 | DEFVAR_INT ("max-specpdl-size", &max_specpdl_size, | |
82fc29a1 | 3598 | doc: /* *Limit on number of Lisp variable bindings and `unwind-protect's. |
9f5903bb | 3599 | If Lisp code tries to increase the total number past this amount, |
2520dc0c RS |
3600 | an error is signaled. |
3601 | You can safely use a value considerably larger than the default value, | |
3602 | if that proves inconveniently small. However, if you increase it too far, | |
3603 | Emacs could run out of memory trying to make the stack bigger. */); | |
db9f0278 JB |
3604 | |
3605 | DEFVAR_INT ("max-lisp-eval-depth", &max_lisp_eval_depth, | |
9dbc9081 | 3606 | doc: /* *Limit on depth in `eval', `apply' and `funcall' before error. |
2520dc0c RS |
3607 | |
3608 | This limit serves to catch infinite recursions for you before they cause | |
9dbc9081 PJ |
3609 | actual stack overflow in C, which would be fatal for Emacs. |
3610 | You can safely make it considerably larger than its default value, | |
2520dc0c RS |
3611 | if that proves inconveniently small. However, if you increase it too far, |
3612 | Emacs could overflow the real C stack, and crash. */); | |
db9f0278 JB |
3613 | |
3614 | DEFVAR_LISP ("quit-flag", &Vquit_flag, | |
9dbc9081 | 3615 | doc: /* Non-nil causes `eval' to abort, unless `inhibit-quit' is non-nil. |
42ed718e RS |
3616 | If the value is t, that means do an ordinary quit. |
3617 | If the value equals `throw-on-input', that means quit by throwing | |
3618 | to the tag specified in `throw-on-input'; it's for handling `while-no-input'. | |
3619 | Typing C-g sets `quit-flag' to t, regardless of `inhibit-quit', | |
3620 | but `inhibit-quit' non-nil prevents anything from taking notice of that. */); | |
db9f0278 JB |
3621 | Vquit_flag = Qnil; |
3622 | ||
3623 | DEFVAR_LISP ("inhibit-quit", &Vinhibit_quit, | |
9dbc9081 PJ |
3624 | doc: /* Non-nil inhibits C-g quitting from happening immediately. |
3625 | Note that `quit-flag' will still be set by typing C-g, | |
3626 | so a quit will be signaled as soon as `inhibit-quit' is nil. | |
3627 | To prevent this happening, set `quit-flag' to nil | |
3628 | before making `inhibit-quit' nil. */); | |
db9f0278 JB |
3629 | Vinhibit_quit = Qnil; |
3630 | ||
d67b4f80 | 3631 | Qinhibit_quit = intern_c_string ("inhibit-quit"); |
ad236261 JB |
3632 | staticpro (&Qinhibit_quit); |
3633 | ||
d67b4f80 | 3634 | Qautoload = intern_c_string ("autoload"); |
db9f0278 JB |
3635 | staticpro (&Qautoload); |
3636 | ||
d67b4f80 | 3637 | Qdebug_on_error = intern_c_string ("debug-on-error"); |
db9f0278 JB |
3638 | staticpro (&Qdebug_on_error); |
3639 | ||
d67b4f80 | 3640 | Qmacro = intern_c_string ("macro"); |
db9f0278 JB |
3641 | staticpro (&Qmacro); |
3642 | ||
d67b4f80 | 3643 | Qdeclare = intern_c_string ("declare"); |
d6edd563 | 3644 | staticpro (&Qdeclare); |
177c0ea7 | 3645 | |
db9f0278 JB |
3646 | /* Note that the process handling also uses Qexit, but we don't want |
3647 | to staticpro it twice, so we just do it here. */ | |
d67b4f80 | 3648 | Qexit = intern_c_string ("exit"); |
db9f0278 JB |
3649 | staticpro (&Qexit); |
3650 | ||
d67b4f80 | 3651 | Qinteractive = intern_c_string ("interactive"); |
db9f0278 JB |
3652 | staticpro (&Qinteractive); |
3653 | ||
d67b4f80 | 3654 | Qcommandp = intern_c_string ("commandp"); |
db9f0278 JB |
3655 | staticpro (&Qcommandp); |
3656 | ||
d67b4f80 | 3657 | Qdefun = intern_c_string ("defun"); |
db9f0278 JB |
3658 | staticpro (&Qdefun); |
3659 | ||
d67b4f80 | 3660 | Qand_rest = intern_c_string ("&rest"); |
db9f0278 JB |
3661 | staticpro (&Qand_rest); |
3662 | ||
d67b4f80 | 3663 | Qand_optional = intern_c_string ("&optional"); |
db9f0278 JB |
3664 | staticpro (&Qand_optional); |
3665 | ||
d67b4f80 | 3666 | Qdebug = intern_c_string ("debug"); |
f01cbfdd RS |
3667 | staticpro (&Qdebug); |
3668 | ||
128c0f66 | 3669 | DEFVAR_LISP ("stack-trace-on-error", &Vstack_trace_on_error, |
704788b3 RS |
3670 | doc: /* *Non-nil means errors display a backtrace buffer. |
3671 | More precisely, this happens for any error that is handled | |
3672 | by the editor command loop. | |
9dbc9081 PJ |
3673 | If the value is a list, an error only means to display a backtrace |
3674 | if one of its condition symbols appears in the list. */); | |
128c0f66 | 3675 | Vstack_trace_on_error = Qnil; |
db9f0278 | 3676 | |
128c0f66 | 3677 | DEFVAR_LISP ("debug-on-error", &Vdebug_on_error, |
9dbc9081 PJ |
3678 | doc: /* *Non-nil means enter debugger if an error is signaled. |
3679 | Does not apply to errors handled by `condition-case' or those | |
3680 | matched by `debug-ignored-errors'. | |
3681 | If the value is a list, an error only means to enter the debugger | |
3682 | if one of its condition symbols appears in the list. | |
3683 | When you evaluate an expression interactively, this variable | |
3684 | is temporarily non-nil if `eval-expression-debug-on-error' is non-nil. | |
fbbdcf2f CY |
3685 | The command `toggle-debug-on-error' toggles this. |
3686 | See also the variable `debug-on-quit'. */); | |
128c0f66 | 3687 | Vdebug_on_error = Qnil; |
db9f0278 | 3688 | |
fc950e09 | 3689 | DEFVAR_LISP ("debug-ignored-errors", &Vdebug_ignored_errors, |
9dbc9081 PJ |
3690 | doc: /* *List of errors for which the debugger should not be called. |
3691 | Each element may be a condition-name or a regexp that matches error messages. | |
3692 | If any element applies to a given error, that error skips the debugger | |
3693 | and just returns to top level. | |
3694 | This overrides the variable `debug-on-error'. | |
3695 | It does not apply to errors handled by `condition-case'. */); | |
fc950e09 KH |
3696 | Vdebug_ignored_errors = Qnil; |
3697 | ||
db9f0278 | 3698 | DEFVAR_BOOL ("debug-on-quit", &debug_on_quit, |
82fc29a1 JB |
3699 | doc: /* *Non-nil means enter debugger if quit is signaled (C-g, for example). |
3700 | Does not apply if quit is handled by a `condition-case'. */); | |
db9f0278 JB |
3701 | debug_on_quit = 0; |
3702 | ||
3703 | DEFVAR_BOOL ("debug-on-next-call", &debug_on_next_call, | |
9dbc9081 | 3704 | doc: /* Non-nil means enter debugger before next `eval', `apply' or `funcall'. */); |
db9f0278 | 3705 | |
556d7314 | 3706 | DEFVAR_BOOL ("debugger-may-continue", &debugger_may_continue, |
9dbc9081 PJ |
3707 | doc: /* Non-nil means debugger may continue execution. |
3708 | This is nil when the debugger is called under circumstances where it | |
3709 | might not be safe to continue. */); | |
dac204bc | 3710 | debugger_may_continue = 1; |
556d7314 | 3711 | |
db9f0278 | 3712 | DEFVAR_LISP ("debugger", &Vdebugger, |
9dbc9081 PJ |
3713 | doc: /* Function to call to invoke debugger. |
3714 | If due to frame exit, args are `exit' and the value being returned; | |
3715 | this function's value will be returned instead of that. | |
3716 | If due to error, args are `error' and a list of the args to `signal'. | |
3717 | If due to `apply' or `funcall' entry, one arg, `lambda'. | |
3718 | If due to `eval' entry, one arg, t. */); | |
db9f0278 JB |
3719 | Vdebugger = Qnil; |
3720 | ||
61ede770 | 3721 | DEFVAR_LISP ("signal-hook-function", &Vsignal_hook_function, |
9dbc9081 PJ |
3722 | doc: /* If non-nil, this is a function for `signal' to call. |
3723 | It receives the same arguments that `signal' was given. | |
3724 | The Edebug package uses this to regain control. */); | |
61ede770 RS |
3725 | Vsignal_hook_function = Qnil; |
3726 | ||
57a6e758 | 3727 | DEFVAR_LISP ("debug-on-signal", &Vdebug_on_signal, |
9dbc9081 PJ |
3728 | doc: /* *Non-nil means call the debugger regardless of condition handlers. |
3729 | Note that `debug-on-error', `debug-on-quit' and friends | |
3730 | still determine whether to handle the particular condition. */); | |
57a6e758 | 3731 | Vdebug_on_signal = Qnil; |
61ede770 | 3732 | |
d6edd563 GM |
3733 | DEFVAR_LISP ("macro-declaration-function", &Vmacro_declaration_function, |
3734 | doc: /* Function to process declarations in a macro definition. | |
3735 | The function will be called with two args MACRO and DECL. | |
3736 | MACRO is the name of the macro being defined. | |
3737 | DECL is a list `(declare ...)' containing the declarations. | |
3738 | The value the function returns is not used. */); | |
3739 | Vmacro_declaration_function = Qnil; | |
3740 | ||
d67b4f80 | 3741 | Vrun_hooks = intern_c_string ("run-hooks"); |
6e6e9f08 | 3742 | staticpro (&Vrun_hooks); |
db9f0278 JB |
3743 | |
3744 | staticpro (&Vautoload_queue); | |
3745 | Vautoload_queue = Qnil; | |
a2ff3819 GM |
3746 | staticpro (&Vsignaling_function); |
3747 | Vsignaling_function = Qnil; | |
db9f0278 JB |
3748 | |
3749 | defsubr (&Sor); | |
3750 | defsubr (&Sand); | |
3751 | defsubr (&Sif); | |
3752 | defsubr (&Scond); | |
3753 | defsubr (&Sprogn); | |
3754 | defsubr (&Sprog1); | |
3755 | defsubr (&Sprog2); | |
3756 | defsubr (&Ssetq); | |
3757 | defsubr (&Squote); | |
3758 | defsubr (&Sfunction); | |
3759 | defsubr (&Sdefun); | |
3760 | defsubr (&Sdefmacro); | |
3761 | defsubr (&Sdefvar); | |
19cebf5a | 3762 | defsubr (&Sdefvaralias); |
db9f0278 JB |
3763 | defsubr (&Sdefconst); |
3764 | defsubr (&Suser_variable_p); | |
3765 | defsubr (&Slet); | |
3766 | defsubr (&SletX); | |
3767 | defsubr (&Swhile); | |
3768 | defsubr (&Smacroexpand); | |
3769 | defsubr (&Scatch); | |
3770 | defsubr (&Sthrow); | |
3771 | defsubr (&Sunwind_protect); | |
3772 | defsubr (&Scondition_case); | |
3773 | defsubr (&Ssignal); | |
3774 | defsubr (&Sinteractive_p); | |
4b664e76 | 3775 | defsubr (&Scalled_interactively_p); |
db9f0278 JB |
3776 | defsubr (&Scommandp); |
3777 | defsubr (&Sautoload); | |
3778 | defsubr (&Seval); | |
3779 | defsubr (&Sapply); | |
3780 | defsubr (&Sfuncall); | |
ff936e53 SM |
3781 | defsubr (&Srun_hooks); |
3782 | defsubr (&Srun_hook_with_args); | |
3783 | defsubr (&Srun_hook_with_args_until_success); | |
3784 | defsubr (&Srun_hook_with_args_until_failure); | |
661c7d6e | 3785 | defsubr (&Sfetch_bytecode); |
db9f0278 JB |
3786 | defsubr (&Sbacktrace_debug); |
3787 | defsubr (&Sbacktrace); | |
3788 | defsubr (&Sbacktrace_frame); | |
3789 | } | |
ab5796a9 MB |
3790 | |
3791 | /* arch-tag: 014a07aa-33ab-4a8f-a3d2-ee8a4a9ff7fb | |
3792 | (do not change this comment) */ |