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db9f0278 | 1 | /* Evaluator for GNU Emacs Lisp interpreter. |
acaf905b | 2 | Copyright (C) 1985-1987, 1993-1995, 1999-2012 Free Software Foundation, Inc. |
db9f0278 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
db9f0278 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
db9f0278 JB |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
db9f0278 JB |
18 | |
19 | ||
18160b98 | 20 | #include <config.h> |
eb3f1cc8 | 21 | #include <limits.h> |
4e2fe2e6 | 22 | #include <stdio.h> |
db9f0278 | 23 | #include "lisp.h" |
9ac0d9e0 | 24 | #include "blockinput.h" |
db9f0278 | 25 | #include "commands.h" |
1f98fa48 | 26 | #include "keyboard.h" |
3648c842 | 27 | #include "dispextern.h" |
94b612ad | 28 | #include "frame.h" /* For XFRAME. */ |
db9f0278 | 29 | |
b70e1a2b SM |
30 | #if HAVE_X_WINDOWS |
31 | #include "xterm.h" | |
32 | #endif | |
33 | ||
c2d7786e | 34 | struct backtrace *backtrace_list; |
244ed907 PE |
35 | |
36 | #if !BYTE_MARK_STACK | |
37 | static | |
38 | #endif | |
db9f0278 JB |
39 | struct catchtag *catchlist; |
40 | ||
244ed907 PE |
41 | /* Chain of condition handlers currently in effect. |
42 | The elements of this chain are contained in the stack frames | |
43 | of Fcondition_case and internal_condition_case. | |
44 | When an error is signaled (by calling Fsignal, below), | |
45 | this chain is searched for an element that applies. */ | |
46 | ||
47 | #if !BYTE_MARK_STACK | |
48 | static | |
49 | #endif | |
50 | struct handler *handlerlist; | |
51 | ||
15934ffa RS |
52 | #ifdef DEBUG_GCPRO |
53 | /* Count levels of GCPRO to detect failure to UNGCPRO. */ | |
54 | int gcpro_level; | |
55 | #endif | |
56 | ||
61b108cc | 57 | Lisp_Object Qautoload, Qmacro, Qexit, Qinteractive, Qcommandp; |
29208e82 | 58 | Lisp_Object Qinhibit_quit; |
955cbe7b PE |
59 | Lisp_Object Qand_rest; |
60 | static Lisp_Object Qand_optional; | |
45b82ad0 | 61 | static Lisp_Object Qinhibit_debugger; |
955cbe7b | 62 | static Lisp_Object Qdeclare; |
b9598260 SM |
63 | Lisp_Object Qinternal_interpreter_environment, Qclosure; |
64 | ||
ed008a6d | 65 | static Lisp_Object Qdebug; |
db9f0278 | 66 | |
6e6e9f08 RS |
67 | /* This holds either the symbol `run-hooks' or nil. |
68 | It is nil at an early stage of startup, and when Emacs | |
69 | is shutting down. */ | |
4c576a83 | 70 | |
db9f0278 JB |
71 | Lisp_Object Vrun_hooks; |
72 | ||
73 | /* Non-nil means record all fset's and provide's, to be undone | |
74 | if the file being autoloaded is not fully loaded. | |
75 | They are recorded by being consed onto the front of Vautoload_queue: | |
47b82df9 | 76 | (FUN . ODEF) for a defun, (0 . OFEATURES) for a provide. */ |
db9f0278 JB |
77 | |
78 | Lisp_Object Vautoload_queue; | |
79 | ||
80 | /* Current number of specbindings allocated in specpdl. */ | |
4c576a83 | 81 | |
d311d28c | 82 | ptrdiff_t specpdl_size; |
db9f0278 JB |
83 | |
84 | /* Pointer to beginning of specpdl. */ | |
4c576a83 | 85 | |
db9f0278 JB |
86 | struct specbinding *specpdl; |
87 | ||
88 | /* Pointer to first unused element in specpdl. */ | |
4c576a83 | 89 | |
ab837828 | 90 | struct specbinding *specpdl_ptr; |
db9f0278 | 91 | |
db9f0278 | 92 | /* Depth in Lisp evaluations and function calls. */ |
4c576a83 | 93 | |
57a96f5c | 94 | static EMACS_INT lisp_eval_depth; |
db9f0278 | 95 | |
be857679 | 96 | /* The value of num_nonmacro_input_events as of the last time we |
82da7701 | 97 | started to enter the debugger. If we decide to enter the debugger |
be857679 | 98 | again when this is still equal to num_nonmacro_input_events, then we |
82da7701 JB |
99 | know that the debugger itself has an error, and we should just |
100 | signal the error instead of entering an infinite loop of debugger | |
101 | invocations. */ | |
4c576a83 | 102 | |
d311d28c | 103 | static EMACS_INT when_entered_debugger; |
db9f0278 | 104 | |
a2ff3819 GM |
105 | /* The function from which the last `signal' was called. Set in |
106 | Fsignal. */ | |
107 | ||
108 | Lisp_Object Vsignaling_function; | |
109 | ||
d1f55f16 CY |
110 | /* If non-nil, Lisp code must not be run since some part of Emacs is |
111 | in an inconsistent state. Currently, x-create-frame uses this to | |
112 | avoid triggering window-configuration-change-hook while the new | |
113 | frame is half-initialized. */ | |
114 | Lisp_Object inhibit_lisp_code; | |
115 | ||
f66c7cf8 | 116 | static Lisp_Object funcall_lambda (Lisp_Object, ptrdiff_t, Lisp_Object *); |
1882aa38 | 117 | static bool interactive_p (void); |
7200d79c | 118 | static Lisp_Object apply_lambda (Lisp_Object fun, Lisp_Object args); |
e46f2325 DA |
119 | |
120 | /* Functions to set Lisp_Object slots of struct specbinding. */ | |
121 | ||
b0ab8123 | 122 | static void |
e46f2325 DA |
123 | set_specpdl_symbol (Lisp_Object symbol) |
124 | { | |
125 | specpdl_ptr->symbol = symbol; | |
126 | } | |
127 | ||
b0ab8123 | 128 | static void |
e46f2325 DA |
129 | set_specpdl_old_value (Lisp_Object oldval) |
130 | { | |
131 | specpdl_ptr->old_value = oldval; | |
132 | } | |
133 | ||
dfcf069d | 134 | void |
d3da34e0 | 135 | init_eval_once (void) |
db9f0278 | 136 | { |
98e8eae1 | 137 | enum { size = 50 }; |
38182d90 | 138 | specpdl = xmalloc (size * sizeof *specpdl); |
98e8eae1 | 139 | specpdl_size = size; |
270e8074 | 140 | specpdl_ptr = specpdl; |
6588243d | 141 | /* Don't forget to update docs (lispref node "Local Variables"). */ |
c530e1c2 | 142 | max_specpdl_size = 1300; /* 1000 is not enough for CEDET's c-by.el. */ |
d46f6bbb | 143 | max_lisp_eval_depth = 600; |
34d470ba RS |
144 | |
145 | Vrun_hooks = Qnil; | |
db9f0278 JB |
146 | } |
147 | ||
dfcf069d | 148 | void |
d3da34e0 | 149 | init_eval (void) |
db9f0278 JB |
150 | { |
151 | specpdl_ptr = specpdl; | |
152 | catchlist = 0; | |
153 | handlerlist = 0; | |
154 | backtrace_list = 0; | |
155 | Vquit_flag = Qnil; | |
156 | debug_on_next_call = 0; | |
157 | lisp_eval_depth = 0; | |
87e21fbd | 158 | #ifdef DEBUG_GCPRO |
15934ffa | 159 | gcpro_level = 0; |
87e21fbd | 160 | #endif |
be857679 | 161 | /* This is less than the initial value of num_nonmacro_input_events. */ |
b5b911f9 | 162 | when_entered_debugger = -1; |
db9f0278 JB |
163 | } |
164 | ||
f6d62986 | 165 | /* Unwind-protect function used by call_debugger. */ |
9f5903bb RS |
166 | |
167 | static Lisp_Object | |
d3da34e0 | 168 | restore_stack_limits (Lisp_Object data) |
9f5903bb RS |
169 | { |
170 | max_specpdl_size = XINT (XCAR (data)); | |
171 | max_lisp_eval_depth = XINT (XCDR (data)); | |
538f78c3 | 172 | return Qnil; |
9f5903bb RS |
173 | } |
174 | ||
175 | /* Call the Lisp debugger, giving it argument ARG. */ | |
176 | ||
7f7e0167 | 177 | Lisp_Object |
d3da34e0 | 178 | call_debugger (Lisp_Object arg) |
db9f0278 | 179 | { |
1882aa38 | 180 | bool debug_while_redisplaying; |
d311d28c | 181 | ptrdiff_t count = SPECPDL_INDEX (); |
3648c842 | 182 | Lisp_Object val; |
5816888b | 183 | EMACS_INT old_max = max_specpdl_size; |
177c0ea7 | 184 | |
9f5903bb RS |
185 | /* Temporarily bump up the stack limits, |
186 | so the debugger won't run out of stack. */ | |
177c0ea7 | 187 | |
9f5903bb RS |
188 | max_specpdl_size += 1; |
189 | record_unwind_protect (restore_stack_limits, | |
190 | Fcons (make_number (old_max), | |
191 | make_number (max_lisp_eval_depth))); | |
192 | max_specpdl_size = old_max; | |
193 | ||
194 | if (lisp_eval_depth + 40 > max_lisp_eval_depth) | |
195 | max_lisp_eval_depth = lisp_eval_depth + 40; | |
196 | ||
98e8eae1 | 197 | if (max_specpdl_size - 100 < SPECPDL_INDEX ()) |
9f5903bb | 198 | max_specpdl_size = SPECPDL_INDEX () + 100; |
177c0ea7 | 199 | |
d148e14d | 200 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
201 | if (display_hourglass_p) |
202 | cancel_hourglass (); | |
237c23b0 GM |
203 | #endif |
204 | ||
db9f0278 | 205 | debug_on_next_call = 0; |
be857679 | 206 | when_entered_debugger = num_nonmacro_input_events; |
3648c842 GM |
207 | |
208 | /* Resetting redisplaying_p to 0 makes sure that debug output is | |
209 | displayed if the debugger is invoked during redisplay. */ | |
210 | debug_while_redisplaying = redisplaying_p; | |
211 | redisplaying_p = 0; | |
556d7314 GM |
212 | specbind (intern ("debugger-may-continue"), |
213 | debug_while_redisplaying ? Qnil : Qt); | |
8efb6cc7 | 214 | specbind (Qinhibit_redisplay, Qnil); |
45b82ad0 | 215 | specbind (Qinhibit_debugger, Qt); |
9db6f6b4 GM |
216 | |
217 | #if 0 /* Binding this prevents execution of Lisp code during | |
218 | redisplay, which necessarily leads to display problems. */ | |
8efb6cc7 | 219 | specbind (Qinhibit_eval_during_redisplay, Qt); |
9db6f6b4 | 220 | #endif |
177c0ea7 | 221 | |
3648c842 GM |
222 | val = apply1 (Vdebugger, arg); |
223 | ||
224 | /* Interrupting redisplay and resuming it later is not safe under | |
225 | all circumstances. So, when the debugger returns, abort the | |
1b1acc13 | 226 | interrupted redisplay by going back to the top-level. */ |
3648c842 GM |
227 | if (debug_while_redisplaying) |
228 | Ftop_level (); | |
229 | ||
556d7314 | 230 | return unbind_to (count, val); |
db9f0278 JB |
231 | } |
232 | ||
475545b5 | 233 | static void |
d3da34e0 | 234 | do_debug_on_call (Lisp_Object code) |
db9f0278 JB |
235 | { |
236 | debug_on_next_call = 0; | |
237 | backtrace_list->debug_on_exit = 1; | |
238 | call_debugger (Fcons (code, Qnil)); | |
239 | } | |
240 | \f | |
241 | /* NOTE!!! Every function that can call EVAL must protect its args | |
242 | and temporaries from garbage collection while it needs them. | |
243 | The definition of `For' shows what you have to do. */ | |
244 | ||
245 | DEFUN ("or", For, Sor, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
246 | doc: /* Eval args until one of them yields non-nil, then return that value. |
247 | The remaining args are not evalled at all. | |
248 | If all args return nil, return nil. | |
533eb34b | 249 | usage: (or CONDITIONS...) */) |
5842a27b | 250 | (Lisp_Object args) |
db9f0278 | 251 | { |
e509f168 | 252 | register Lisp_Object val = Qnil; |
db9f0278 JB |
253 | struct gcpro gcpro1; |
254 | ||
e509f168 | 255 | GCPRO1 (args); |
db9f0278 | 256 | |
e509f168 | 257 | while (CONSP (args)) |
db9f0278 | 258 | { |
defb1411 | 259 | val = eval_sub (XCAR (args)); |
265a9e55 | 260 | if (!NILP (val)) |
db9f0278 | 261 | break; |
e509f168 | 262 | args = XCDR (args); |
db9f0278 | 263 | } |
db9f0278 JB |
264 | |
265 | UNGCPRO; | |
266 | return val; | |
267 | } | |
268 | ||
269 | DEFUN ("and", Fand, Sand, 0, UNEVALLED, 0, | |
b8de5714 | 270 | doc: /* Eval args until one of them yields nil, then return nil. |
9dbc9081 PJ |
271 | The remaining args are not evalled at all. |
272 | If no arg yields nil, return the last arg's value. | |
533eb34b | 273 | usage: (and CONDITIONS...) */) |
5842a27b | 274 | (Lisp_Object args) |
db9f0278 | 275 | { |
e509f168 | 276 | register Lisp_Object val = Qt; |
db9f0278 JB |
277 | struct gcpro gcpro1; |
278 | ||
e509f168 | 279 | GCPRO1 (args); |
db9f0278 | 280 | |
e509f168 | 281 | while (CONSP (args)) |
db9f0278 | 282 | { |
defb1411 | 283 | val = eval_sub (XCAR (args)); |
265a9e55 | 284 | if (NILP (val)) |
db9f0278 | 285 | break; |
e509f168 | 286 | args = XCDR (args); |
db9f0278 | 287 | } |
db9f0278 JB |
288 | |
289 | UNGCPRO; | |
290 | return val; | |
291 | } | |
292 | ||
293 | DEFUN ("if", Fif, Sif, 2, UNEVALLED, 0, | |
b8de5714 | 294 | doc: /* If COND yields non-nil, do THEN, else do ELSE... |
9dbc9081 PJ |
295 | Returns the value of THEN or the value of the last of the ELSE's. |
296 | THEN must be one expression, but ELSE... can be zero or more expressions. | |
297 | If COND yields nil, and there are no ELSE's, the value is nil. | |
7a25dc6d | 298 | usage: (if COND THEN ELSE...) */) |
5842a27b | 299 | (Lisp_Object args) |
db9f0278 JB |
300 | { |
301 | register Lisp_Object cond; | |
302 | struct gcpro gcpro1; | |
303 | ||
304 | GCPRO1 (args); | |
defb1411 | 305 | cond = eval_sub (Fcar (args)); |
db9f0278 JB |
306 | UNGCPRO; |
307 | ||
265a9e55 | 308 | if (!NILP (cond)) |
defb1411 | 309 | return eval_sub (Fcar (Fcdr (args))); |
db9f0278 JB |
310 | return Fprogn (Fcdr (Fcdr (args))); |
311 | } | |
312 | ||
313 | DEFUN ("cond", Fcond, Scond, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
314 | doc: /* Try each clause until one succeeds. |
315 | Each clause looks like (CONDITION BODY...). CONDITION is evaluated | |
316 | and, if the value is non-nil, this clause succeeds: | |
317 | then the expressions in BODY are evaluated and the last one's | |
318 | value is the value of the cond-form. | |
319 | If no clause succeeds, cond returns nil. | |
320 | If a clause has one element, as in (CONDITION), | |
321 | CONDITION's value if non-nil is returned from the cond-form. | |
7a25dc6d | 322 | usage: (cond CLAUSES...) */) |
5842a27b | 323 | (Lisp_Object args) |
db9f0278 JB |
324 | { |
325 | register Lisp_Object clause, val; | |
326 | struct gcpro gcpro1; | |
327 | ||
328 | val = Qnil; | |
329 | GCPRO1 (args); | |
265a9e55 | 330 | while (!NILP (args)) |
db9f0278 JB |
331 | { |
332 | clause = Fcar (args); | |
defb1411 | 333 | val = eval_sub (Fcar (clause)); |
265a9e55 | 334 | if (!NILP (val)) |
db9f0278 | 335 | { |
03699b14 KR |
336 | if (!EQ (XCDR (clause), Qnil)) |
337 | val = Fprogn (XCDR (clause)); | |
db9f0278 JB |
338 | break; |
339 | } | |
03699b14 | 340 | args = XCDR (args); |
db9f0278 JB |
341 | } |
342 | UNGCPRO; | |
343 | ||
344 | return val; | |
345 | } | |
346 | ||
a7ca3326 | 347 | DEFUN ("progn", Fprogn, Sprogn, 0, UNEVALLED, 0, |
9dbc9081 | 348 | doc: /* Eval BODY forms sequentially and return value of last one. |
5b4a1f50 | 349 | usage: (progn BODY...) */) |
5842a27b | 350 | (Lisp_Object args) |
db9f0278 | 351 | { |
e509f168 | 352 | register Lisp_Object val = Qnil; |
db9f0278 JB |
353 | struct gcpro gcpro1; |
354 | ||
e509f168 | 355 | GCPRO1 (args); |
db9f0278 | 356 | |
e509f168 | 357 | while (CONSP (args)) |
db9f0278 | 358 | { |
defb1411 | 359 | val = eval_sub (XCAR (args)); |
e509f168 | 360 | args = XCDR (args); |
db9f0278 | 361 | } |
db9f0278 JB |
362 | |
363 | UNGCPRO; | |
364 | return val; | |
365 | } | |
366 | ||
367 | DEFUN ("prog1", Fprog1, Sprog1, 1, UNEVALLED, 0, | |
bdee2ef3 | 368 | doc: /* Eval FIRST and BODY sequentially; return value from FIRST. |
9dbc9081 PJ |
369 | The value of FIRST is saved during the evaluation of the remaining args, |
370 | whose values are discarded. | |
7a25dc6d | 371 | usage: (prog1 FIRST BODY...) */) |
5842a27b | 372 | (Lisp_Object args) |
db9f0278 JB |
373 | { |
374 | Lisp_Object val; | |
375 | register Lisp_Object args_left; | |
376 | struct gcpro gcpro1, gcpro2; | |
db9f0278 JB |
377 | |
378 | args_left = args; | |
379 | val = Qnil; | |
380 | GCPRO2 (args, val); | |
381 | ||
856bbc81 PE |
382 | val = eval_sub (XCAR (args_left)); |
383 | while (CONSP (args_left = XCDR (args_left))) | |
384 | eval_sub (XCAR (args_left)); | |
db9f0278 JB |
385 | |
386 | UNGCPRO; | |
387 | return val; | |
388 | } | |
389 | ||
390 | DEFUN ("prog2", Fprog2, Sprog2, 2, UNEVALLED, 0, | |
bdee2ef3 | 391 | doc: /* Eval FORM1, FORM2 and BODY sequentially; return value from FORM2. |
82fc29a1 JB |
392 | The value of FORM2 is saved during the evaluation of the |
393 | remaining args, whose values are discarded. | |
394 | usage: (prog2 FORM1 FORM2 BODY...) */) | |
5842a27b | 395 | (Lisp_Object args) |
db9f0278 | 396 | { |
856bbc81 | 397 | struct gcpro gcpro1; |
db9f0278 | 398 | |
856bbc81 | 399 | GCPRO1 (args); |
856bbc81 | 400 | eval_sub (XCAR (args)); |
a63df926 PE |
401 | UNGCPRO; |
402 | return Fprog1 (XCDR (args)); | |
db9f0278 JB |
403 | } |
404 | ||
405 | DEFUN ("setq", Fsetq, Ssetq, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
406 | doc: /* Set each SYM to the value of its VAL. |
407 | The symbols SYM are variables; they are literal (not evaluated). | |
408 | The values VAL are expressions; they are evaluated. | |
409 | Thus, (setq x (1+ y)) sets `x' to the value of `(1+ y)'. | |
410 | The second VAL is not computed until after the first SYM is set, and so on; | |
411 | each VAL can use the new value of variables set earlier in the `setq'. | |
412 | The return value of the `setq' form is the value of the last VAL. | |
819586b2 | 413 | usage: (setq [SYM VAL]...) */) |
5842a27b | 414 | (Lisp_Object args) |
db9f0278 JB |
415 | { |
416 | register Lisp_Object args_left; | |
b9598260 | 417 | register Lisp_Object val, sym, lex_binding; |
db9f0278 JB |
418 | struct gcpro gcpro1; |
419 | ||
1283140e | 420 | if (NILP (args)) |
db9f0278 JB |
421 | return Qnil; |
422 | ||
423 | args_left = args; | |
424 | GCPRO1 (args); | |
425 | ||
426 | do | |
427 | { | |
defb1411 | 428 | val = eval_sub (Fcar (Fcdr (args_left))); |
db9f0278 | 429 | sym = Fcar (args_left); |
b9598260 | 430 | |
defb1411 | 431 | /* Like for eval_sub, we do not check declared_special here since |
f07a954e SM |
432 | it's been done when let-binding. */ |
433 | if (!NILP (Vinternal_interpreter_environment) /* Mere optimization! */ | |
b9598260 | 434 | && SYMBOLP (sym) |
f07a954e SM |
435 | && !NILP (lex_binding |
436 | = Fassq (sym, Vinternal_interpreter_environment))) | |
b9598260 SM |
437 | XSETCDR (lex_binding, val); /* SYM is lexically bound. */ |
438 | else | |
439 | Fset (sym, val); /* SYM is dynamically bound. */ | |
440 | ||
db9f0278 JB |
441 | args_left = Fcdr (Fcdr (args_left)); |
442 | } | |
5e617bc2 | 443 | while (!NILP (args_left)); |
db9f0278 JB |
444 | |
445 | UNGCPRO; | |
446 | return val; | |
447 | } | |
177c0ea7 | 448 | |
db9f0278 | 449 | DEFUN ("quote", Fquote, Squote, 1, UNEVALLED, 0, |
9dbc9081 | 450 | doc: /* Return the argument, without evaluating it. `(quote x)' yields `x'. |
91a15bc6 SM |
451 | Warning: `quote' does not construct its return value, but just returns |
452 | the value that was pre-constructed by the Lisp reader (see info node | |
453 | `(elisp)Printed Representation'). | |
454 | This means that '(a . b) is not identical to (cons 'a 'b): the former | |
455 | does not cons. Quoting should be reserved for constants that will | |
456 | never be modified by side-effects, unless you like self-modifying code. | |
457 | See the common pitfall in info node `(elisp)Rearrangement' for an example | |
458 | of unexpected results when a quoted object is modified. | |
9dbc9081 | 459 | usage: (quote ARG) */) |
5842a27b | 460 | (Lisp_Object args) |
db9f0278 | 461 | { |
1283140e RS |
462 | if (!NILP (Fcdr (args))) |
463 | xsignal2 (Qwrong_number_of_arguments, Qquote, Flength (args)); | |
db9f0278 JB |
464 | return Fcar (args); |
465 | } | |
177c0ea7 | 466 | |
db9f0278 | 467 | DEFUN ("function", Ffunction, Sfunction, 1, UNEVALLED, 0, |
9dbc9081 PJ |
468 | doc: /* Like `quote', but preferred for objects which are functions. |
469 | In byte compilation, `function' causes its argument to be compiled. | |
470 | `quote' cannot do that. | |
471 | usage: (function ARG) */) | |
5842a27b | 472 | (Lisp_Object args) |
db9f0278 | 473 | { |
b9598260 SM |
474 | Lisp_Object quoted = XCAR (args); |
475 | ||
1283140e RS |
476 | if (!NILP (Fcdr (args))) |
477 | xsignal2 (Qwrong_number_of_arguments, Qfunction, Flength (args)); | |
b9598260 SM |
478 | |
479 | if (!NILP (Vinternal_interpreter_environment) | |
480 | && CONSP (quoted) | |
481 | && EQ (XCAR (quoted), Qlambda)) | |
482 | /* This is a lambda expression within a lexical environment; | |
483 | return an interpreted closure instead of a simple lambda. */ | |
23aba0ea SM |
484 | return Fcons (Qclosure, Fcons (Vinternal_interpreter_environment, |
485 | XCDR (quoted))); | |
b9598260 SM |
486 | else |
487 | /* Simply quote the argument. */ | |
488 | return quoted; | |
db9f0278 JB |
489 | } |
490 | ||
e0f331ab | 491 | |
a7ca3326 | 492 | DEFUN ("interactive-p", Finteractive_p, Sinteractive_p, 0, 0, 0, |
84b17ab0 | 493 | doc: /* Return t if the containing function was run directly by user input. |
82fc29a1 JB |
494 | This means that the function was called with `call-interactively' |
495 | \(which includes being called as the binding of a key) | |
84b17ab0 | 496 | and input is currently coming from the keyboard (not a keyboard macro), |
c63df42b RS |
497 | and Emacs is not running in batch mode (`noninteractive' is nil). |
498 | ||
499 | The only known proper use of `interactive-p' is in deciding whether to | |
500 | display a helpful message, or how to display it. If you're thinking | |
501 | of using it for any other purpose, it is quite likely that you're | |
502 | making a mistake. Think: what do you want to do when the command is | |
503 | called from a keyboard macro? | |
504 | ||
84b17ab0 CY |
505 | To test whether your function was called with `call-interactively', |
506 | either (i) add an extra optional argument and give it an `interactive' | |
507 | spec that specifies non-nil unconditionally (such as \"p\"); or (ii) | |
508 | use `called-interactively-p'. */) | |
5842a27b | 509 | (void) |
db9f0278 | 510 | { |
5c2a7148 | 511 | return (INTERACTIVE && interactive_p ()) ? Qt : Qnil; |
e0f331ab GM |
512 | } |
513 | ||
514 | ||
9d28c33e | 515 | DEFUN ("called-interactively-p", Fcalled_interactively_p, Scalled_interactively_p, 0, 1, 0, |
84b17ab0 | 516 | doc: /* Return t if the containing function was called by `call-interactively'. |
9d28c33e SM |
517 | If KIND is `interactive', then only return t if the call was made |
518 | interactively by the user, i.e. not in `noninteractive' mode nor | |
519 | when `executing-kbd-macro'. | |
520 | If KIND is `any', on the other hand, it will return t for any kind of | |
521 | interactive call, including being called as the binding of a key, or | |
522 | from a keyboard macro, or in `noninteractive' mode. | |
523 | ||
524 | The only known proper use of `interactive' for KIND is in deciding | |
525 | whether to display a helpful message, or how to display it. If you're | |
526 | thinking of using it for any other purpose, it is quite likely that | |
527 | you're making a mistake. Think: what do you want to do when the | |
528 | command is called from a keyboard macro? | |
84b17ab0 | 529 | |
8c95e664 GM |
530 | Instead of using this function, it is sometimes cleaner to give your |
531 | function an extra optional argument whose `interactive' spec specifies | |
532 | non-nil unconditionally (\"p\" is a good way to do this), or via | |
533 | \(not (or executing-kbd-macro noninteractive)). */) | |
5842a27b | 534 | (Lisp_Object kind) |
c63df42b | 535 | { |
1882aa38 PE |
536 | return (((INTERACTIVE || !EQ (kind, intern ("interactive"))) |
537 | && interactive_p ()) | |
538 | ? Qt : Qnil); | |
c63df42b RS |
539 | } |
540 | ||
541 | ||
1882aa38 PE |
542 | /* Return true if function in which this appears was called using |
543 | call-interactively and is not a built-in. */ | |
e0f331ab | 544 | |
1882aa38 PE |
545 | static bool |
546 | interactive_p (void) | |
e0f331ab GM |
547 | { |
548 | struct backtrace *btp; | |
549 | Lisp_Object fun; | |
db9f0278 | 550 | |
db9f0278 | 551 | btp = backtrace_list; |
daa37602 JB |
552 | |
553 | /* If this isn't a byte-compiled function, there may be a frame at | |
e0f331ab | 554 | the top for Finteractive_p. If so, skip it. */ |
e7c1b6ef | 555 | fun = Findirect_function (btp->function, Qnil); |
0b31741c RS |
556 | if (SUBRP (fun) && (XSUBR (fun) == &Sinteractive_p |
557 | || XSUBR (fun) == &Scalled_interactively_p)) | |
db9f0278 | 558 | btp = btp->next; |
daa37602 JB |
559 | |
560 | /* If we're running an Emacs 18-style byte-compiled function, there | |
4402a9ed RS |
561 | may be a frame for Fbytecode at the top level. In any version of |
562 | Emacs there can be Fbytecode frames for subexpressions evaluated | |
563 | inside catch and condition-case. Skip past them. | |
daa37602 | 564 | |
4402a9ed | 565 | If this isn't a byte-compiled function, then we may now be |
daa37602 | 566 | looking at several frames for special forms. Skip past them. */ |
4402a9ed | 567 | while (btp |
e7c1b6ef | 568 | && (EQ (btp->function, Qbytecode) |
44f230aa | 569 | || btp->nargs == UNEVALLED)) |
a6e3fa71 JB |
570 | btp = btp->next; |
571 | ||
f6d62986 | 572 | /* `btp' now points at the frame of the innermost function that isn't |
daa37602 JB |
573 | a special form, ignoring frames for Finteractive_p and/or |
574 | Fbytecode at the top. If this frame is for a built-in function | |
1882aa38 | 575 | (such as load or eval-region) return false. */ |
e7c1b6ef | 576 | fun = Findirect_function (btp->function, Qnil); |
1882aa38 | 577 | if (SUBRP (fun)) |
e0f331ab | 578 | return 0; |
177c0ea7 | 579 | |
f6d62986 | 580 | /* `btp' points to the frame of a Lisp function that called interactive-p. |
db9f0278 | 581 | Return t if that function was called interactively. */ |
e7c1b6ef | 582 | if (btp && btp->next && EQ (btp->next->function, Qcall_interactively)) |
e0f331ab GM |
583 | return 1; |
584 | return 0; | |
db9f0278 JB |
585 | } |
586 | ||
e0f331ab | 587 | |
1848d15d | 588 | DEFUN ("defvaralias", Fdefvaralias, Sdefvaralias, 2, 3, 0, |
4a9308b8 | 589 | doc: /* Make NEW-ALIAS a variable alias for symbol BASE-VARIABLE. |
e102f0d8 | 590 | Aliased variables always have the same value; setting one sets the other. |
4a9308b8 | 591 | Third arg DOCSTRING, if non-nil, is documentation for NEW-ALIAS. If it is |
dd60787c GM |
592 | omitted or nil, NEW-ALIAS gets the documentation string of BASE-VARIABLE, |
593 | or of the variable at the end of the chain of aliases, if BASE-VARIABLE is | |
594 | itself an alias. If NEW-ALIAS is bound, and BASE-VARIABLE is not, | |
595 | then the value of BASE-VARIABLE is set to that of NEW-ALIAS. | |
4a9308b8 | 596 | The return value is BASE-VARIABLE. */) |
5842a27b | 597 | (Lisp_Object new_alias, Lisp_Object base_variable, Lisp_Object docstring) |
19cebf5a GM |
598 | { |
599 | struct Lisp_Symbol *sym; | |
1848d15d | 600 | |
4a9308b8 JB |
601 | CHECK_SYMBOL (new_alias); |
602 | CHECK_SYMBOL (base_variable); | |
19cebf5a | 603 | |
4a9308b8 | 604 | sym = XSYMBOL (new_alias); |
ce5b453a SM |
605 | |
606 | if (sym->constant) | |
178f2507 SM |
607 | /* Not sure why, but why not? */ |
608 | error ("Cannot make a constant an alias"); | |
ce5b453a SM |
609 | |
610 | switch (sym->redirect) | |
611 | { | |
612 | case SYMBOL_FORWARDED: | |
613 | error ("Cannot make an internal variable an alias"); | |
614 | case SYMBOL_LOCALIZED: | |
615 | error ("Don't know how to make a localized variable an alias"); | |
616 | } | |
617 | ||
dd60787c | 618 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg00834.html |
ce5b453a SM |
619 | If n_a is bound, but b_v is not, set the value of b_v to n_a, |
620 | so that old-code that affects n_a before the aliasing is setup | |
621 | still works. */ | |
622 | if (NILP (Fboundp (base_variable))) | |
94b612ad | 623 | set_internal (base_variable, find_symbol_value (new_alias), Qnil, 1); |
ce5b453a SM |
624 | |
625 | { | |
626 | struct specbinding *p; | |
627 | ||
bc985141 | 628 | for (p = specpdl_ptr; p > specpdl; ) |
d311d28c | 629 | if ((--p)->func == NULL |
ce5b453a SM |
630 | && (EQ (new_alias, |
631 | CONSP (p->symbol) ? XCAR (p->symbol) : p->symbol))) | |
632 | error ("Don't know how to make a let-bound variable an alias"); | |
633 | } | |
634 | ||
b9598260 | 635 | sym->declared_special = 1; |
0ac30604 | 636 | XSYMBOL (base_variable)->declared_special = 1; |
ce5b453a SM |
637 | sym->redirect = SYMBOL_VARALIAS; |
638 | SET_SYMBOL_ALIAS (sym, XSYMBOL (base_variable)); | |
4a9308b8 JB |
639 | sym->constant = SYMBOL_CONSTANT_P (base_variable); |
640 | LOADHIST_ATTACH (new_alias); | |
ce5b453a SM |
641 | /* Even if docstring is nil: remove old docstring. */ |
642 | Fput (new_alias, Qvariable_documentation, docstring); | |
1848d15d | 643 | |
4a9308b8 | 644 | return base_variable; |
19cebf5a GM |
645 | } |
646 | ||
647 | ||
db9f0278 | 648 | DEFUN ("defvar", Fdefvar, Sdefvar, 1, UNEVALLED, 0, |
29357847 | 649 | doc: /* Define SYMBOL as a variable, and return SYMBOL. |
c3a70e2b CY |
650 | You are not required to define a variable in order to use it, but |
651 | defining it lets you supply an initial value and documentation, which | |
652 | can be referred to by the Emacs help facilities and other programming | |
653 | tools. The `defvar' form also declares the variable as \"special\", | |
654 | so that it is always dynamically bound even if `lexical-binding' is t. | |
655 | ||
656 | The optional argument INITVALUE is evaluated, and used to set SYMBOL, | |
657 | only if SYMBOL's value is void. If SYMBOL is buffer-local, its | |
658 | default value is what is set; buffer-local values are not affected. | |
9dbc9081 | 659 | If INITVALUE is missing, SYMBOL's value is not set. |
733f68b6 LT |
660 | |
661 | If SYMBOL has a local binding, then this form affects the local | |
662 | binding. This is usually not what you want. Thus, if you need to | |
663 | load a file defining variables, with this form or with `defconst' or | |
664 | `defcustom', you should always load that file _outside_ any bindings | |
665 | for these variables. \(`defconst' and `defcustom' behave similarly in | |
666 | this respect.) | |
c3a70e2b CY |
667 | |
668 | The optional argument DOCSTRING is a documentation string for the | |
669 | variable. | |
670 | ||
671 | To define a user option, use `defcustom' instead of `defvar'. | |
2df5238c | 672 | usage: (defvar SYMBOL &optional INITVALUE DOCSTRING) */) |
5842a27b | 673 | (Lisp_Object args) |
db9f0278 | 674 | { |
a42ba017 | 675 | register Lisp_Object sym, tem, tail; |
db9f0278 JB |
676 | |
677 | sym = Fcar (args); | |
a42ba017 RS |
678 | tail = Fcdr (args); |
679 | if (!NILP (Fcdr (Fcdr (tail)))) | |
921baa95 | 680 | error ("Too many arguments"); |
a42ba017 | 681 | |
33568849 | 682 | tem = Fdefault_boundp (sym); |
a42ba017 | 683 | if (!NILP (tail)) |
db9f0278 | 684 | { |
ba83908c SM |
685 | /* Do it before evaluating the initial value, for self-references. */ |
686 | XSYMBOL (sym)->declared_special = 1; | |
590130fb | 687 | |
265a9e55 | 688 | if (NILP (tem)) |
defb1411 | 689 | Fset_default (sym, eval_sub (Fcar (tail))); |
d0bce91e SM |
690 | else |
691 | { /* Check if there is really a global binding rather than just a let | |
692 | binding that shadows the global unboundness of the var. */ | |
40bce90b | 693 | struct specbinding *pdl = specpdl_ptr; |
d311d28c | 694 | while (pdl > specpdl) |
d0bce91e | 695 | { |
d311d28c | 696 | if (EQ ((--pdl)->symbol, sym) && !pdl->func |
d0bce91e SM |
697 | && EQ (pdl->old_value, Qunbound)) |
698 | { | |
699 | message_with_string ("Warning: defvar ignored because %s is let-bound", | |
700 | SYMBOL_NAME (sym), 1); | |
701 | break; | |
702 | } | |
703 | } | |
704 | } | |
33568849 | 705 | tail = Fcdr (tail); |
e509f168 SM |
706 | tem = Fcar (tail); |
707 | if (!NILP (tem)) | |
33568849 | 708 | { |
33568849 SM |
709 | if (!NILP (Vpurify_flag)) |
710 | tem = Fpurecopy (tem); | |
711 | Fput (sym, Qvariable_documentation, tem); | |
712 | } | |
6fd797f5 | 713 | LOADHIST_ATTACH (sym); |
db9f0278 | 714 | } |
f07a954e SM |
715 | else if (!NILP (Vinternal_interpreter_environment) |
716 | && !XSYMBOL (sym)->declared_special) | |
717 | /* A simple (defvar foo) with lexical scoping does "nothing" except | |
718 | declare that var to be dynamically scoped *locally* (i.e. within | |
719 | the current file or let-block). */ | |
720 | Vinternal_interpreter_environment = | |
721 | Fcons (sym, Vinternal_interpreter_environment); | |
33568849 | 722 | else |
d28a2170 PE |
723 | { |
724 | /* Simple (defvar <var>) should not count as a definition at all. | |
725 | It could get in the way of other definitions, and unloading this | |
726 | package could try to make the variable unbound. */ | |
727 | } | |
addf35fd | 728 | |
db9f0278 JB |
729 | return sym; |
730 | } | |
731 | ||
732 | DEFUN ("defconst", Fdefconst, Sdefconst, 2, UNEVALLED, 0, | |
9dbc9081 | 733 | doc: /* Define SYMBOL as a constant variable. |
c3a70e2b CY |
734 | This declares that neither programs nor users should ever change the |
735 | value. This constancy is not actually enforced by Emacs Lisp, but | |
736 | SYMBOL is marked as a special variable so that it is never lexically | |
737 | bound. | |
738 | ||
739 | The `defconst' form always sets the value of SYMBOL to the result of | |
740 | evalling INITVALUE. If SYMBOL is buffer-local, its default value is | |
741 | what is set; buffer-local values are not affected. If SYMBOL has a | |
742 | local binding, then this form sets the local binding's value. | |
743 | However, you should normally not make local bindings for variables | |
744 | defined with this form. | |
745 | ||
746 | The optional DOCSTRING specifies the variable's documentation string. | |
7a25dc6d | 747 | usage: (defconst SYMBOL INITVALUE [DOCSTRING]) */) |
5842a27b | 748 | (Lisp_Object args) |
db9f0278 JB |
749 | { |
750 | register Lisp_Object sym, tem; | |
751 | ||
752 | sym = Fcar (args); | |
a42ba017 | 753 | if (!NILP (Fcdr (Fcdr (Fcdr (args))))) |
921baa95 | 754 | error ("Too many arguments"); |
a42ba017 | 755 | |
defb1411 | 756 | tem = eval_sub (Fcar (Fcdr (args))); |
1182a7cb DL |
757 | if (!NILP (Vpurify_flag)) |
758 | tem = Fpurecopy (tem); | |
759 | Fset_default (sym, tem); | |
b9598260 | 760 | XSYMBOL (sym)->declared_special = 1; |
db9f0278 | 761 | tem = Fcar (Fcdr (Fcdr (args))); |
265a9e55 | 762 | if (!NILP (tem)) |
db9f0278 | 763 | { |
265a9e55 | 764 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
765 | tem = Fpurecopy (tem); |
766 | Fput (sym, Qvariable_documentation, tem); | |
767 | } | |
873759d5 | 768 | Fput (sym, Qrisky_local_variable, Qt); |
6fd797f5 | 769 | LOADHIST_ATTACH (sym); |
db9f0278 JB |
770 | return sym; |
771 | } | |
772 | ||
513749ee SM |
773 | /* Make SYMBOL lexically scoped. */ |
774 | DEFUN ("internal-make-var-non-special", Fmake_var_non_special, | |
775 | Smake_var_non_special, 1, 1, 0, | |
776 | doc: /* Internal function. */) | |
777 | (Lisp_Object symbol) | |
778 | { | |
779 | CHECK_SYMBOL (symbol); | |
780 | XSYMBOL (symbol)->declared_special = 0; | |
781 | return Qnil; | |
782 | } | |
783 | ||
db9f0278 JB |
784 | \f |
785 | DEFUN ("let*", FletX, SletX, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
786 | doc: /* Bind variables according to VARLIST then eval BODY. |
787 | The value of the last form in BODY is returned. | |
788 | Each element of VARLIST is a symbol (which is bound to nil) | |
789 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
790 | Each VALUEFORM can refer to the symbols already bound by this VARLIST. | |
7a25dc6d | 791 | usage: (let* VARLIST BODY...) */) |
5842a27b | 792 | (Lisp_Object args) |
db9f0278 | 793 | { |
b9598260 | 794 | Lisp_Object varlist, var, val, elt, lexenv; |
d311d28c | 795 | ptrdiff_t count = SPECPDL_INDEX (); |
db9f0278 JB |
796 | struct gcpro gcpro1, gcpro2, gcpro3; |
797 | ||
798 | GCPRO3 (args, elt, varlist); | |
799 | ||
b9598260 SM |
800 | lexenv = Vinternal_interpreter_environment; |
801 | ||
db9f0278 | 802 | varlist = Fcar (args); |
b9598260 | 803 | while (CONSP (varlist)) |
db9f0278 JB |
804 | { |
805 | QUIT; | |
b9598260 SM |
806 | |
807 | elt = XCAR (varlist); | |
90165123 | 808 | if (SYMBOLP (elt)) |
b9598260 SM |
809 | { |
810 | var = elt; | |
811 | val = Qnil; | |
812 | } | |
08564963 | 813 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 814 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
815 | else |
816 | { | |
b9598260 | 817 | var = Fcar (elt); |
defb1411 | 818 | val = eval_sub (Fcar (Fcdr (elt))); |
db9f0278 | 819 | } |
b9598260 | 820 | |
f07a954e SM |
821 | if (!NILP (lexenv) && SYMBOLP (var) |
822 | && !XSYMBOL (var)->declared_special | |
823 | && NILP (Fmemq (var, Vinternal_interpreter_environment))) | |
b9598260 SM |
824 | /* Lexically bind VAR by adding it to the interpreter's binding |
825 | alist. */ | |
826 | { | |
f07a954e SM |
827 | Lisp_Object newenv |
828 | = Fcons (Fcons (var, val), Vinternal_interpreter_environment); | |
829 | if (EQ (Vinternal_interpreter_environment, lexenv)) | |
830 | /* Save the old lexical environment on the specpdl stack, | |
831 | but only for the first lexical binding, since we'll never | |
832 | need to revert to one of the intermediate ones. */ | |
833 | specbind (Qinternal_interpreter_environment, newenv); | |
834 | else | |
835 | Vinternal_interpreter_environment = newenv; | |
db9f0278 | 836 | } |
b9598260 SM |
837 | else |
838 | specbind (var, val); | |
839 | ||
840 | varlist = XCDR (varlist); | |
db9f0278 JB |
841 | } |
842 | UNGCPRO; | |
843 | val = Fprogn (Fcdr (args)); | |
844 | return unbind_to (count, val); | |
845 | } | |
846 | ||
847 | DEFUN ("let", Flet, Slet, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
848 | doc: /* Bind variables according to VARLIST then eval BODY. |
849 | The value of the last form in BODY is returned. | |
850 | Each element of VARLIST is a symbol (which is bound to nil) | |
851 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
852 | All the VALUEFORMs are evalled before any symbols are bound. | |
7a25dc6d | 853 | usage: (let VARLIST BODY...) */) |
5842a27b | 854 | (Lisp_Object args) |
db9f0278 | 855 | { |
b9598260 | 856 | Lisp_Object *temps, tem, lexenv; |
db9f0278 | 857 | register Lisp_Object elt, varlist; |
d311d28c | 858 | ptrdiff_t count = SPECPDL_INDEX (); |
f66c7cf8 | 859 | ptrdiff_t argnum; |
db9f0278 | 860 | struct gcpro gcpro1, gcpro2; |
3a7a9129 | 861 | USE_SAFE_ALLOCA; |
db9f0278 JB |
862 | |
863 | varlist = Fcar (args); | |
864 | ||
f6d62986 | 865 | /* Make space to hold the values to give the bound variables. */ |
db9f0278 | 866 | elt = Flength (varlist); |
b72e0717 | 867 | SAFE_ALLOCA_LISP (temps, XFASTINT (elt)); |
db9f0278 | 868 | |
f6d62986 | 869 | /* Compute the values and store them in `temps'. */ |
db9f0278 JB |
870 | |
871 | GCPRO2 (args, *temps); | |
872 | gcpro2.nvars = 0; | |
873 | ||
67ee9f6e | 874 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 JB |
875 | { |
876 | QUIT; | |
67ee9f6e | 877 | elt = XCAR (varlist); |
90165123 | 878 | if (SYMBOLP (elt)) |
db9f0278 | 879 | temps [argnum++] = Qnil; |
08564963 | 880 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 881 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 | 882 | else |
defb1411 | 883 | temps [argnum++] = eval_sub (Fcar (Fcdr (elt))); |
db9f0278 JB |
884 | gcpro2.nvars = argnum; |
885 | } | |
886 | UNGCPRO; | |
887 | ||
b9598260 SM |
888 | lexenv = Vinternal_interpreter_environment; |
889 | ||
db9f0278 | 890 | varlist = Fcar (args); |
67ee9f6e | 891 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 | 892 | { |
b9598260 SM |
893 | Lisp_Object var; |
894 | ||
67ee9f6e | 895 | elt = XCAR (varlist); |
b9598260 | 896 | var = SYMBOLP (elt) ? elt : Fcar (elt); |
db9f0278 | 897 | tem = temps[argnum++]; |
b9598260 | 898 | |
f07a954e SM |
899 | if (!NILP (lexenv) && SYMBOLP (var) |
900 | && !XSYMBOL (var)->declared_special | |
901 | && NILP (Fmemq (var, Vinternal_interpreter_environment))) | |
b9598260 SM |
902 | /* Lexically bind VAR by adding it to the lexenv alist. */ |
903 | lexenv = Fcons (Fcons (var, tem), lexenv); | |
db9f0278 | 904 | else |
b9598260 SM |
905 | /* Dynamically bind VAR. */ |
906 | specbind (var, tem); | |
db9f0278 JB |
907 | } |
908 | ||
b9598260 SM |
909 | if (!EQ (lexenv, Vinternal_interpreter_environment)) |
910 | /* Instantiate a new lexical environment. */ | |
911 | specbind (Qinternal_interpreter_environment, lexenv); | |
912 | ||
db9f0278 | 913 | elt = Fprogn (Fcdr (args)); |
3a7a9129 | 914 | SAFE_FREE (); |
db9f0278 JB |
915 | return unbind_to (count, elt); |
916 | } | |
917 | ||
918 | DEFUN ("while", Fwhile, Swhile, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
919 | doc: /* If TEST yields non-nil, eval BODY... and repeat. |
920 | The order of execution is thus TEST, BODY, TEST, BODY and so on | |
921 | until TEST returns nil. | |
7a25dc6d | 922 | usage: (while TEST BODY...) */) |
5842a27b | 923 | (Lisp_Object args) |
db9f0278 | 924 | { |
2b9bde76 | 925 | Lisp_Object test, body; |
db9f0278 JB |
926 | struct gcpro gcpro1, gcpro2; |
927 | ||
928 | GCPRO2 (test, body); | |
929 | ||
930 | test = Fcar (args); | |
931 | body = Fcdr (args); | |
defb1411 | 932 | while (!NILP (eval_sub (test))) |
db9f0278 JB |
933 | { |
934 | QUIT; | |
935 | Fprogn (body); | |
936 | } | |
937 | ||
938 | UNGCPRO; | |
939 | return Qnil; | |
940 | } | |
941 | ||
942 | DEFUN ("macroexpand", Fmacroexpand, Smacroexpand, 1, 2, 0, | |
9dbc9081 PJ |
943 | doc: /* Return result of expanding macros at top level of FORM. |
944 | If FORM is not a macro call, it is returned unchanged. | |
945 | Otherwise, the macro is expanded and the expansion is considered | |
946 | in place of FORM. When a non-macro-call results, it is returned. | |
947 | ||
948 | The second optional arg ENVIRONMENT specifies an environment of macro | |
949 | definitions to shadow the loaded ones for use in file byte-compilation. */) | |
5842a27b | 950 | (Lisp_Object form, Lisp_Object environment) |
db9f0278 | 951 | { |
23d6b5a6 | 952 | /* With cleanups from Hallvard Furuseth. */ |
db9f0278 JB |
953 | register Lisp_Object expander, sym, def, tem; |
954 | ||
955 | while (1) | |
956 | { | |
957 | /* Come back here each time we expand a macro call, | |
958 | in case it expands into another macro call. */ | |
90165123 | 959 | if (!CONSP (form)) |
db9f0278 | 960 | break; |
23d6b5a6 | 961 | /* Set SYM, give DEF and TEM right values in case SYM is not a symbol. */ |
03699b14 | 962 | def = sym = XCAR (form); |
23d6b5a6 | 963 | tem = Qnil; |
db9f0278 JB |
964 | /* Trace symbols aliases to other symbols |
965 | until we get a symbol that is not an alias. */ | |
90165123 | 966 | while (SYMBOLP (def)) |
db9f0278 JB |
967 | { |
968 | QUIT; | |
23d6b5a6 | 969 | sym = def; |
79e8bfbf | 970 | tem = Fassq (sym, environment); |
265a9e55 | 971 | if (NILP (tem)) |
db9f0278 | 972 | { |
c644523b | 973 | def = XSYMBOL (sym)->function; |
23d6b5a6 JB |
974 | if (!EQ (def, Qunbound)) |
975 | continue; | |
db9f0278 | 976 | } |
23d6b5a6 | 977 | break; |
db9f0278 | 978 | } |
79e8bfbf | 979 | /* Right now TEM is the result from SYM in ENVIRONMENT, |
db9f0278 | 980 | and if TEM is nil then DEF is SYM's function definition. */ |
265a9e55 | 981 | if (NILP (tem)) |
db9f0278 | 982 | { |
79e8bfbf | 983 | /* SYM is not mentioned in ENVIRONMENT. |
db9f0278 | 984 | Look at its function definition. */ |
7abaf5cc SM |
985 | struct gcpro gcpro1; |
986 | GCPRO1 (form); | |
987 | def = Fautoload_do_load (def, sym, Qmacro); | |
988 | UNGCPRO; | |
90165123 | 989 | if (EQ (def, Qunbound) || !CONSP (def)) |
f6d62986 | 990 | /* Not defined or definition not suitable. */ |
db9f0278 | 991 | break; |
7abaf5cc | 992 | if (!EQ (XCAR (def), Qmacro)) |
db9f0278 | 993 | break; |
03699b14 | 994 | else expander = XCDR (def); |
db9f0278 JB |
995 | } |
996 | else | |
997 | { | |
03699b14 | 998 | expander = XCDR (tem); |
265a9e55 | 999 | if (NILP (expander)) |
db9f0278 JB |
1000 | break; |
1001 | } | |
4f18a4ed SM |
1002 | { |
1003 | Lisp_Object newform = apply1 (expander, XCDR (form)); | |
1004 | if (EQ (form, newform)) | |
1005 | break; | |
1006 | else | |
1007 | form = newform; | |
1008 | } | |
db9f0278 JB |
1009 | } |
1010 | return form; | |
1011 | } | |
1012 | \f | |
1013 | DEFUN ("catch", Fcatch, Scatch, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1014 | doc: /* Eval BODY allowing nonlocal exits using `throw'. |
1015 | TAG is evalled to get the tag to use; it must not be nil. | |
1016 | ||
1017 | Then the BODY is executed. | |
1d632ccf | 1018 | Within BODY, a call to `throw' with the same TAG exits BODY and this `catch'. |
9dbc9081 PJ |
1019 | If no throw happens, `catch' returns the value of the last BODY form. |
1020 | If a throw happens, it specifies the value to return from `catch'. | |
7a25dc6d | 1021 | usage: (catch TAG BODY...) */) |
5842a27b | 1022 | (Lisp_Object args) |
db9f0278 JB |
1023 | { |
1024 | register Lisp_Object tag; | |
1025 | struct gcpro gcpro1; | |
1026 | ||
1027 | GCPRO1 (args); | |
defb1411 | 1028 | tag = eval_sub (Fcar (args)); |
db9f0278 JB |
1029 | UNGCPRO; |
1030 | return internal_catch (tag, Fprogn, Fcdr (args)); | |
1031 | } | |
1032 | ||
1033 | /* Set up a catch, then call C function FUNC on argument ARG. | |
1034 | FUNC should return a Lisp_Object. | |
1035 | This is how catches are done from within C code. */ | |
1036 | ||
1037 | Lisp_Object | |
d3da34e0 | 1038 | internal_catch (Lisp_Object tag, Lisp_Object (*func) (Lisp_Object), Lisp_Object arg) |
db9f0278 JB |
1039 | { |
1040 | /* This structure is made part of the chain `catchlist'. */ | |
1041 | struct catchtag c; | |
1042 | ||
1043 | /* Fill in the components of c, and put it on the list. */ | |
1044 | c.next = catchlist; | |
1045 | c.tag = tag; | |
1046 | c.val = Qnil; | |
1047 | c.backlist = backtrace_list; | |
1048 | c.handlerlist = handlerlist; | |
1049 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1050 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1051 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1052 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1053 | c.gcpro = gcprolist; |
bcf28080 | 1054 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1055 | catchlist = &c; |
1056 | ||
1057 | /* Call FUNC. */ | |
0328b6de | 1058 | if (! sys_setjmp (c.jmp)) |
db9f0278 JB |
1059 | c.val = (*func) (arg); |
1060 | ||
1061 | /* Throw works by a longjmp that comes right here. */ | |
1062 | catchlist = c.next; | |
1063 | return c.val; | |
1064 | } | |
1065 | ||
ba410f40 JB |
1066 | /* Unwind the specbind, catch, and handler stacks back to CATCH, and |
1067 | jump to that CATCH, returning VALUE as the value of that catch. | |
db9f0278 | 1068 | |
4d7e6e51 | 1069 | This is the guts of Fthrow and Fsignal; they differ only in the way |
ba410f40 JB |
1070 | they choose the catch tag to throw to. A catch tag for a |
1071 | condition-case form has a TAG of Qnil. | |
db9f0278 | 1072 | |
ba410f40 JB |
1073 | Before each catch is discarded, unbind all special bindings and |
1074 | execute all unwind-protect clauses made above that catch. Unwind | |
1075 | the handler stack as we go, so that the proper handlers are in | |
1076 | effect for each unwind-protect clause we run. At the end, restore | |
1077 | some static info saved in CATCH, and longjmp to the location | |
4d7e6e51 | 1078 | specified there. |
ba410f40 JB |
1079 | |
1080 | This is used for correct unwinding in Fthrow and Fsignal. */ | |
db9f0278 | 1081 | |
845ca893 | 1082 | static _Noreturn void |
d3da34e0 | 1083 | unwind_to_catch (struct catchtag *catch, Lisp_Object value) |
db9f0278 | 1084 | { |
1882aa38 | 1085 | bool last_time; |
db9f0278 | 1086 | |
ba410f40 JB |
1087 | /* Save the value in the tag. */ |
1088 | catch->val = value; | |
1089 | ||
0b31741c | 1090 | /* Restore certain special C variables. */ |
1cdc3155 | 1091 | set_poll_suppress_count (catch->poll_suppress_count); |
4d7e6e51 | 1092 | unblock_input_to (catch->interrupt_input_blocked); |
69bbd6bd | 1093 | immediate_quit = 0; |
82da7701 | 1094 | |
db9f0278 JB |
1095 | do |
1096 | { | |
1097 | last_time = catchlist == catch; | |
82da7701 JB |
1098 | |
1099 | /* Unwind the specpdl stack, and then restore the proper set of | |
bb8e180f | 1100 | handlers. */ |
db9f0278 JB |
1101 | unbind_to (catchlist->pdlcount, Qnil); |
1102 | handlerlist = catchlist->handlerlist; | |
1103 | catchlist = catchlist->next; | |
1104 | } | |
1105 | while (! last_time); | |
1106 | ||
bcf28080 | 1107 | byte_stack_list = catch->byte_stack; |
db9f0278 | 1108 | gcprolist = catch->gcpro; |
15934ffa | 1109 | #ifdef DEBUG_GCPRO |
d8e2b5ba | 1110 | gcpro_level = gcprolist ? gcprolist->level + 1 : 0; |
15934ffa | 1111 | #endif |
db9f0278 JB |
1112 | backtrace_list = catch->backlist; |
1113 | lisp_eval_depth = catch->lisp_eval_depth; | |
177c0ea7 | 1114 | |
0328b6de | 1115 | sys_longjmp (catch->jmp, 1); |
db9f0278 JB |
1116 | } |
1117 | ||
a7ca3326 | 1118 | DEFUN ("throw", Fthrow, Sthrow, 2, 2, 0, |
9dbc9081 PJ |
1119 | doc: /* Throw to the catch for TAG and return VALUE from it. |
1120 | Both TAG and VALUE are evalled. */) | |
5842a27b | 1121 | (register Lisp_Object tag, Lisp_Object value) |
db9f0278 JB |
1122 | { |
1123 | register struct catchtag *c; | |
1124 | ||
8788120f KS |
1125 | if (!NILP (tag)) |
1126 | for (c = catchlist; c; c = c->next) | |
1127 | { | |
1128 | if (EQ (c->tag, tag)) | |
1129 | unwind_to_catch (c, value); | |
1130 | } | |
734d55a2 | 1131 | xsignal2 (Qno_catch, tag, value); |
db9f0278 JB |
1132 | } |
1133 | ||
1134 | ||
1135 | DEFUN ("unwind-protect", Funwind_protect, Sunwind_protect, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1136 | doc: /* Do BODYFORM, protecting with UNWINDFORMS. |
1137 | If BODYFORM completes normally, its value is returned | |
1138 | after executing the UNWINDFORMS. | |
1139 | If BODYFORM exits nonlocally, the UNWINDFORMS are executed anyway. | |
7a25dc6d | 1140 | usage: (unwind-protect BODYFORM UNWINDFORMS...) */) |
5842a27b | 1141 | (Lisp_Object args) |
db9f0278 JB |
1142 | { |
1143 | Lisp_Object val; | |
d311d28c | 1144 | ptrdiff_t count = SPECPDL_INDEX (); |
db9f0278 | 1145 | |
04b28167 | 1146 | record_unwind_protect (Fprogn, Fcdr (args)); |
defb1411 | 1147 | val = eval_sub (Fcar (args)); |
177c0ea7 | 1148 | return unbind_to (count, val); |
db9f0278 JB |
1149 | } |
1150 | \f | |
db9f0278 | 1151 | DEFUN ("condition-case", Fcondition_case, Scondition_case, 2, UNEVALLED, 0, |
9dbc9081 | 1152 | doc: /* Regain control when an error is signaled. |
1b1acc13 | 1153 | Executes BODYFORM and returns its value if no error happens. |
9dbc9081 PJ |
1154 | Each element of HANDLERS looks like (CONDITION-NAME BODY...) |
1155 | where the BODY is made of Lisp expressions. | |
1156 | ||
1157 | A handler is applicable to an error | |
1158 | if CONDITION-NAME is one of the error's condition names. | |
1159 | If an error happens, the first applicable handler is run. | |
1160 | ||
024a2d76 CY |
1161 | The car of a handler may be a list of condition names instead of a |
1162 | single condition name; then it handles all of them. If the special | |
1163 | condition name `debug' is present in this list, it allows another | |
1164 | condition in the list to run the debugger if `debug-on-error' and the | |
1165 | other usual mechanisms says it should (otherwise, `condition-case' | |
1166 | suppresses the debugger). | |
9dbc9081 | 1167 | |
c997bb25 RS |
1168 | When a handler handles an error, control returns to the `condition-case' |
1169 | and it executes the handler's BODY... | |
d0acbbaf | 1170 | with VAR bound to (ERROR-SYMBOL . SIGNAL-DATA) from the error. |
bb8e180f | 1171 | \(If VAR is nil, the handler can't access that information.) |
c997bb25 RS |
1172 | Then the value of the last BODY form is returned from the `condition-case' |
1173 | expression. | |
9dbc9081 | 1174 | |
9dbc9081 | 1175 | See also the function `signal' for more info. |
2b47b74d | 1176 | usage: (condition-case VAR BODYFORM &rest HANDLERS) */) |
bb8e180f | 1177 | (Lisp_Object args) |
db9f0278 | 1178 | { |
40bce90b PE |
1179 | Lisp_Object var = Fcar (args); |
1180 | Lisp_Object bodyform = Fcar (Fcdr (args)); | |
1181 | Lisp_Object handlers = Fcdr (Fcdr (args)); | |
ee830945 RS |
1182 | |
1183 | return internal_lisp_condition_case (var, bodyform, handlers); | |
1184 | } | |
1185 | ||
1186 | /* Like Fcondition_case, but the args are separate | |
1187 | rather than passed in a list. Used by Fbyte_code. */ | |
1188 | ||
1189 | Lisp_Object | |
d3da34e0 JB |
1190 | internal_lisp_condition_case (volatile Lisp_Object var, Lisp_Object bodyform, |
1191 | Lisp_Object handlers) | |
ee830945 RS |
1192 | { |
1193 | Lisp_Object val; | |
1194 | struct catchtag c; | |
1195 | struct handler h; | |
1196 | ||
b7826503 | 1197 | CHECK_SYMBOL (var); |
82da7701 | 1198 | |
2b47b74d | 1199 | for (val = handlers; CONSP (val); val = XCDR (val)) |
82da7701 JB |
1200 | { |
1201 | Lisp_Object tem; | |
2b47b74d | 1202 | tem = XCAR (val); |
5f96776a RS |
1203 | if (! (NILP (tem) |
1204 | || (CONSP (tem) | |
03699b14 KR |
1205 | && (SYMBOLP (XCAR (tem)) |
1206 | || CONSP (XCAR (tem)))))) | |
e6c3da20 EZ |
1207 | error ("Invalid condition handler: %s", |
1208 | SDATA (Fprin1_to_string (tem, Qt))); | |
82da7701 | 1209 | } |
db9f0278 JB |
1210 | |
1211 | c.tag = Qnil; | |
1212 | c.val = Qnil; | |
1213 | c.backlist = backtrace_list; | |
1214 | c.handlerlist = handlerlist; | |
1215 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1216 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1217 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1218 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1219 | c.gcpro = gcprolist; |
bcf28080 | 1220 | c.byte_stack = byte_stack_list; |
0328b6de | 1221 | if (sys_setjmp (c.jmp)) |
db9f0278 | 1222 | { |
265a9e55 | 1223 | if (!NILP (h.var)) |
bb8e180f | 1224 | specbind (h.var, c.val); |
9d58218c | 1225 | val = Fprogn (Fcdr (h.chosen_clause)); |
82da7701 JB |
1226 | |
1227 | /* Note that this just undoes the binding of h.var; whoever | |
1228 | longjumped to us unwound the stack to c.pdlcount before | |
1229 | throwing. */ | |
db9f0278 JB |
1230 | unbind_to (c.pdlcount, Qnil); |
1231 | return val; | |
1232 | } | |
1233 | c.next = catchlist; | |
1234 | catchlist = &c; | |
177c0ea7 | 1235 | |
82da7701 JB |
1236 | h.var = var; |
1237 | h.handler = handlers; | |
db9f0278 | 1238 | h.next = handlerlist; |
db9f0278 JB |
1239 | h.tag = &c; |
1240 | handlerlist = &h; | |
1241 | ||
defb1411 | 1242 | val = eval_sub (bodyform); |
db9f0278 JB |
1243 | catchlist = c.next; |
1244 | handlerlist = h.next; | |
1245 | return val; | |
1246 | } | |
1247 | ||
f029ca5f RS |
1248 | /* Call the function BFUN with no arguments, catching errors within it |
1249 | according to HANDLERS. If there is an error, call HFUN with | |
1250 | one argument which is the data that describes the error: | |
1251 | (SIGNALNAME . DATA) | |
1252 | ||
1253 | HANDLERS can be a list of conditions to catch. | |
1254 | If HANDLERS is Qt, catch all errors. | |
1255 | If HANDLERS is Qerror, catch all errors | |
1256 | but allow the debugger to run if that is enabled. */ | |
1257 | ||
db9f0278 | 1258 | Lisp_Object |
d3da34e0 JB |
1259 | internal_condition_case (Lisp_Object (*bfun) (void), Lisp_Object handlers, |
1260 | Lisp_Object (*hfun) (Lisp_Object)) | |
db9f0278 JB |
1261 | { |
1262 | Lisp_Object val; | |
1263 | struct catchtag c; | |
1264 | struct handler h; | |
1265 | ||
1266 | c.tag = Qnil; | |
1267 | c.val = Qnil; | |
1268 | c.backlist = backtrace_list; | |
1269 | c.handlerlist = handlerlist; | |
1270 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1271 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1272 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1273 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1274 | c.gcpro = gcprolist; |
bcf28080 | 1275 | c.byte_stack = byte_stack_list; |
0328b6de | 1276 | if (sys_setjmp (c.jmp)) |
db9f0278 | 1277 | { |
9d58218c | 1278 | return (*hfun) (c.val); |
db9f0278 JB |
1279 | } |
1280 | c.next = catchlist; | |
1281 | catchlist = &c; | |
1282 | h.handler = handlers; | |
1283 | h.var = Qnil; | |
db9f0278 JB |
1284 | h.next = handlerlist; |
1285 | h.tag = &c; | |
1286 | handlerlist = &h; | |
1287 | ||
1288 | val = (*bfun) (); | |
1289 | catchlist = c.next; | |
1290 | handlerlist = h.next; | |
1291 | return val; | |
1292 | } | |
1293 | ||
2659a09f | 1294 | /* Like internal_condition_case but call BFUN with ARG as its argument. */ |
f029ca5f | 1295 | |
d227775c | 1296 | Lisp_Object |
d3da34e0 JB |
1297 | internal_condition_case_1 (Lisp_Object (*bfun) (Lisp_Object), Lisp_Object arg, |
1298 | Lisp_Object handlers, Lisp_Object (*hfun) (Lisp_Object)) | |
d227775c RS |
1299 | { |
1300 | Lisp_Object val; | |
1301 | struct catchtag c; | |
1302 | struct handler h; | |
1303 | ||
1304 | c.tag = Qnil; | |
1305 | c.val = Qnil; | |
1306 | c.backlist = backtrace_list; | |
1307 | c.handlerlist = handlerlist; | |
1308 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1309 | c.pdlcount = SPECPDL_INDEX (); |
d227775c | 1310 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1311 | c.interrupt_input_blocked = interrupt_input_blocked; |
d227775c | 1312 | c.gcpro = gcprolist; |
bcf28080 | 1313 | c.byte_stack = byte_stack_list; |
0328b6de | 1314 | if (sys_setjmp (c.jmp)) |
d227775c | 1315 | { |
9d58218c | 1316 | return (*hfun) (c.val); |
d227775c RS |
1317 | } |
1318 | c.next = catchlist; | |
1319 | catchlist = &c; | |
1320 | h.handler = handlers; | |
1321 | h.var = Qnil; | |
1322 | h.next = handlerlist; | |
1323 | h.tag = &c; | |
1324 | handlerlist = &h; | |
1325 | ||
1326 | val = (*bfun) (arg); | |
1327 | catchlist = c.next; | |
1328 | handlerlist = h.next; | |
1329 | return val; | |
1330 | } | |
10b29d41 | 1331 | |
53967e09 CY |
1332 | /* Like internal_condition_case_1 but call BFUN with ARG1 and ARG2 as |
1333 | its arguments. */ | |
1334 | ||
1335 | Lisp_Object | |
178f2507 SM |
1336 | internal_condition_case_2 (Lisp_Object (*bfun) (Lisp_Object, Lisp_Object), |
1337 | Lisp_Object arg1, | |
1338 | Lisp_Object arg2, | |
1339 | Lisp_Object handlers, | |
1340 | Lisp_Object (*hfun) (Lisp_Object)) | |
53967e09 CY |
1341 | { |
1342 | Lisp_Object val; | |
1343 | struct catchtag c; | |
1344 | struct handler h; | |
1345 | ||
53967e09 CY |
1346 | c.tag = Qnil; |
1347 | c.val = Qnil; | |
1348 | c.backlist = backtrace_list; | |
1349 | c.handlerlist = handlerlist; | |
1350 | c.lisp_eval_depth = lisp_eval_depth; | |
1351 | c.pdlcount = SPECPDL_INDEX (); | |
1352 | c.poll_suppress_count = poll_suppress_count; | |
1353 | c.interrupt_input_blocked = interrupt_input_blocked; | |
1354 | c.gcpro = gcprolist; | |
1355 | c.byte_stack = byte_stack_list; | |
0328b6de | 1356 | if (sys_setjmp (c.jmp)) |
53967e09 CY |
1357 | { |
1358 | return (*hfun) (c.val); | |
1359 | } | |
1360 | c.next = catchlist; | |
1361 | catchlist = &c; | |
1362 | h.handler = handlers; | |
1363 | h.var = Qnil; | |
1364 | h.next = handlerlist; | |
1365 | h.tag = &c; | |
1366 | handlerlist = &h; | |
1367 | ||
1368 | val = (*bfun) (arg1, arg2); | |
1369 | catchlist = c.next; | |
1370 | handlerlist = h.next; | |
1371 | return val; | |
1372 | } | |
10b29d41 | 1373 | |
2659a09f | 1374 | /* Like internal_condition_case but call BFUN with NARGS as first, |
10b29d41 GM |
1375 | and ARGS as second argument. */ |
1376 | ||
1377 | Lisp_Object | |
f66c7cf8 PE |
1378 | internal_condition_case_n (Lisp_Object (*bfun) (ptrdiff_t, Lisp_Object *), |
1379 | ptrdiff_t nargs, | |
178f2507 SM |
1380 | Lisp_Object *args, |
1381 | Lisp_Object handlers, | |
cc92c454 SM |
1382 | Lisp_Object (*hfun) (Lisp_Object err, |
1383 | ptrdiff_t nargs, | |
1384 | Lisp_Object *args)) | |
10b29d41 GM |
1385 | { |
1386 | Lisp_Object val; | |
1387 | struct catchtag c; | |
1388 | struct handler h; | |
1389 | ||
1390 | c.tag = Qnil; | |
1391 | c.val = Qnil; | |
1392 | c.backlist = backtrace_list; | |
1393 | c.handlerlist = handlerlist; | |
1394 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1395 | c.pdlcount = SPECPDL_INDEX (); |
10b29d41 | 1396 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1397 | c.interrupt_input_blocked = interrupt_input_blocked; |
10b29d41 GM |
1398 | c.gcpro = gcprolist; |
1399 | c.byte_stack = byte_stack_list; | |
0328b6de | 1400 | if (sys_setjmp (c.jmp)) |
10b29d41 | 1401 | { |
cc92c454 | 1402 | return (*hfun) (c.val, nargs, args); |
10b29d41 GM |
1403 | } |
1404 | c.next = catchlist; | |
1405 | catchlist = &c; | |
1406 | h.handler = handlers; | |
1407 | h.var = Qnil; | |
1408 | h.next = handlerlist; | |
1409 | h.tag = &c; | |
1410 | handlerlist = &h; | |
1411 | ||
1412 | val = (*bfun) (nargs, args); | |
1413 | catchlist = c.next; | |
1414 | handlerlist = h.next; | |
1415 | return val; | |
1416 | } | |
1417 | ||
d227775c | 1418 | \f |
7d47b580 | 1419 | static Lisp_Object find_handler_clause (Lisp_Object, Lisp_Object); |
1882aa38 PE |
1420 | static bool maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig, |
1421 | Lisp_Object data); | |
db9f0278 | 1422 | |
6d5eb5b0 SM |
1423 | void |
1424 | process_quit_flag (void) | |
1425 | { | |
1426 | Lisp_Object flag = Vquit_flag; | |
1427 | Vquit_flag = Qnil; | |
1428 | if (EQ (flag, Qkill_emacs)) | |
1429 | Fkill_emacs (Qnil); | |
1430 | if (EQ (Vthrow_on_input, flag)) | |
1431 | Fthrow (Vthrow_on_input, Qt); | |
1432 | Fsignal (Qquit, Qnil); | |
1433 | } | |
1434 | ||
a7ca3326 | 1435 | DEFUN ("signal", Fsignal, Ssignal, 2, 2, 0, |
9dbc9081 PJ |
1436 | doc: /* Signal an error. Args are ERROR-SYMBOL and associated DATA. |
1437 | This function does not return. | |
1438 | ||
1439 | An error symbol is a symbol with an `error-conditions' property | |
1440 | that is a list of condition names. | |
1441 | A handler for any of those names will get to handle this signal. | |
1442 | The symbol `error' should normally be one of them. | |
1443 | ||
1444 | DATA should be a list. Its elements are printed as part of the error message. | |
3297ec22 LT |
1445 | See Info anchor `(elisp)Definition of signal' for some details on how this |
1446 | error message is constructed. | |
9dbc9081 PJ |
1447 | If the signal is handled, DATA is made available to the handler. |
1448 | See also the function `condition-case'. */) | |
5842a27b | 1449 | (Lisp_Object error_symbol, Lisp_Object data) |
db9f0278 | 1450 | { |
bfa8ca43 | 1451 | /* When memory is full, ERROR-SYMBOL is nil, |
26631f2b RS |
1452 | and DATA is (REAL-ERROR-SYMBOL . REAL-DATA). |
1453 | That is a special case--don't do this in other situations. */ | |
db9f0278 | 1454 | Lisp_Object conditions; |
c11d3d17 | 1455 | Lisp_Object string; |
e7f7fbaa SM |
1456 | Lisp_Object real_error_symbol |
1457 | = (NILP (error_symbol) ? Fcar (data) : error_symbol); | |
1458 | register Lisp_Object clause = Qnil; | |
1459 | struct handler *h; | |
a2ff3819 | 1460 | struct backtrace *bp; |
db9f0278 | 1461 | |
0caaedb1 | 1462 | immediate_quit = 0; |
d063129f | 1463 | abort_on_gc = 0; |
db9f0278 | 1464 | if (gc_in_progress || waiting_for_input) |
1088b922 | 1465 | emacs_abort (); |
db9f0278 | 1466 | |
26631f2b RS |
1467 | #if 0 /* rms: I don't know why this was here, |
1468 | but it is surely wrong for an error that is handled. */ | |
d148e14d | 1469 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
1470 | if (display_hourglass_p) |
1471 | cancel_hourglass (); | |
48f8dfa3 | 1472 | #endif |
177c0ea7 | 1473 | #endif |
48f8dfa3 | 1474 | |
61ede770 | 1475 | /* This hook is used by edebug. */ |
26631f2b RS |
1476 | if (! NILP (Vsignal_hook_function) |
1477 | && ! NILP (error_symbol)) | |
9f5903bb RS |
1478 | { |
1479 | /* Edebug takes care of restoring these variables when it exits. */ | |
1480 | if (lisp_eval_depth + 20 > max_lisp_eval_depth) | |
1481 | max_lisp_eval_depth = lisp_eval_depth + 20; | |
1482 | ||
1483 | if (SPECPDL_INDEX () + 40 > max_specpdl_size) | |
1484 | max_specpdl_size = SPECPDL_INDEX () + 40; | |
1485 | ||
1486 | call2 (Vsignal_hook_function, error_symbol, data); | |
1487 | } | |
61ede770 | 1488 | |
1ea9dec4 | 1489 | conditions = Fget (real_error_symbol, Qerror_conditions); |
db9f0278 | 1490 | |
a2ff3819 GM |
1491 | /* Remember from where signal was called. Skip over the frame for |
1492 | `signal' itself. If a frame for `error' follows, skip that, | |
26631f2b RS |
1493 | too. Don't do this when ERROR_SYMBOL is nil, because that |
1494 | is a memory-full error. */ | |
090a072f | 1495 | Vsignaling_function = Qnil; |
26631f2b | 1496 | if (backtrace_list && !NILP (error_symbol)) |
090a072f GM |
1497 | { |
1498 | bp = backtrace_list->next; | |
e7c1b6ef | 1499 | if (bp && EQ (bp->function, Qerror)) |
090a072f | 1500 | bp = bp->next; |
e7c1b6ef SM |
1501 | if (bp) |
1502 | Vsignaling_function = bp->function; | |
090a072f | 1503 | } |
a2ff3819 | 1504 | |
e7f7fbaa | 1505 | for (h = handlerlist; h; h = h->next) |
db9f0278 | 1506 | { |
7d47b580 | 1507 | clause = find_handler_clause (h->handler, conditions); |
265a9e55 | 1508 | if (!NILP (clause)) |
e7f7fbaa | 1509 | break; |
db9f0278 | 1510 | } |
475545b5 | 1511 | |
e7f7fbaa | 1512 | if (/* Don't run the debugger for a memory-full error. |
e7c1b6ef | 1513 | (There is no room in memory to do that!) */ |
e7f7fbaa SM |
1514 | !NILP (error_symbol) |
1515 | && (!NILP (Vdebug_on_signal) | |
1516 | /* If no handler is present now, try to run the debugger. */ | |
1517 | || NILP (clause) | |
bd1ba3e8 CY |
1518 | /* A `debug' symbol in the handler list disables the normal |
1519 | suppression of the debugger. */ | |
1520 | || (CONSP (clause) && CONSP (XCAR (clause)) | |
1521 | && !NILP (Fmemq (Qdebug, XCAR (clause)))) | |
e7f7fbaa SM |
1522 | /* Special handler that means "print a message and run debugger |
1523 | if requested". */ | |
1524 | || EQ (h->handler, Qerror))) | |
1525 | { | |
1882aa38 | 1526 | bool debugger_called |
e7f7fbaa SM |
1527 | = maybe_call_debugger (conditions, error_symbol, data); |
1528 | /* We can't return values to code which signaled an error, but we | |
1529 | can continue code which has signaled a quit. */ | |
1530 | if (debugger_called && EQ (real_error_symbol, Qquit)) | |
1531 | return Qnil; | |
475545b5 | 1532 | } |
db9f0278 | 1533 | |
e7f7fbaa SM |
1534 | if (!NILP (clause)) |
1535 | { | |
1536 | Lisp_Object unwind_data | |
1537 | = (NILP (error_symbol) ? data : Fcons (error_symbol, data)); | |
475545b5 | 1538 | |
e7f7fbaa SM |
1539 | h->chosen_clause = clause; |
1540 | unwind_to_catch (h->tag, unwind_data); | |
1541 | } | |
1542 | else | |
1543 | { | |
1544 | if (catchlist != 0) | |
1545 | Fthrow (Qtop_level, Qt); | |
1546 | } | |
c11d3d17 | 1547 | |
1ea9dec4 | 1548 | if (! NILP (error_symbol)) |
c11d3d17 | 1549 | data = Fcons (error_symbol, data); |
475545b5 | 1550 | |
c11d3d17 | 1551 | string = Ferror_message_string (data); |
583f48b9 | 1552 | fatal ("%s", SDATA (string)); |
db9f0278 JB |
1553 | } |
1554 | ||
734d55a2 KS |
1555 | /* Internal version of Fsignal that never returns. |
1556 | Used for anything but Qquit (which can return from Fsignal). */ | |
1557 | ||
1558 | void | |
d3da34e0 | 1559 | xsignal (Lisp_Object error_symbol, Lisp_Object data) |
734d55a2 KS |
1560 | { |
1561 | Fsignal (error_symbol, data); | |
1088b922 | 1562 | emacs_abort (); |
734d55a2 KS |
1563 | } |
1564 | ||
1565 | /* Like xsignal, but takes 0, 1, 2, or 3 args instead of a list. */ | |
1566 | ||
1567 | void | |
d3da34e0 | 1568 | xsignal0 (Lisp_Object error_symbol) |
734d55a2 KS |
1569 | { |
1570 | xsignal (error_symbol, Qnil); | |
1571 | } | |
1572 | ||
1573 | void | |
d3da34e0 | 1574 | xsignal1 (Lisp_Object error_symbol, Lisp_Object arg) |
734d55a2 KS |
1575 | { |
1576 | xsignal (error_symbol, list1 (arg)); | |
1577 | } | |
1578 | ||
1579 | void | |
d3da34e0 | 1580 | xsignal2 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2) |
734d55a2 KS |
1581 | { |
1582 | xsignal (error_symbol, list2 (arg1, arg2)); | |
1583 | } | |
1584 | ||
1585 | void | |
d3da34e0 | 1586 | xsignal3 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
734d55a2 KS |
1587 | { |
1588 | xsignal (error_symbol, list3 (arg1, arg2, arg3)); | |
1589 | } | |
1590 | ||
1591 | /* Signal `error' with message S, and additional arg ARG. | |
1592 | If ARG is not a genuine list, make it a one-element list. */ | |
1593 | ||
1594 | void | |
a8fe7202 | 1595 | signal_error (const char *s, Lisp_Object arg) |
734d55a2 KS |
1596 | { |
1597 | Lisp_Object tortoise, hare; | |
1598 | ||
1599 | hare = tortoise = arg; | |
1600 | while (CONSP (hare)) | |
1601 | { | |
1602 | hare = XCDR (hare); | |
1603 | if (!CONSP (hare)) | |
1604 | break; | |
1605 | ||
1606 | hare = XCDR (hare); | |
1607 | tortoise = XCDR (tortoise); | |
1608 | ||
1609 | if (EQ (hare, tortoise)) | |
1610 | break; | |
1611 | } | |
1612 | ||
1613 | if (!NILP (hare)) | |
1614 | arg = Fcons (arg, Qnil); /* Make it a list. */ | |
1615 | ||
1616 | xsignal (Qerror, Fcons (build_string (s), arg)); | |
1617 | } | |
1618 | ||
1619 | ||
1882aa38 | 1620 | /* Return true if LIST is a non-nil atom or |
128c0f66 RM |
1621 | a list containing one of CONDITIONS. */ |
1622 | ||
1882aa38 | 1623 | static bool |
d3da34e0 | 1624 | wants_debugger (Lisp_Object list, Lisp_Object conditions) |
128c0f66 | 1625 | { |
4de86b16 | 1626 | if (NILP (list)) |
128c0f66 RM |
1627 | return 0; |
1628 | if (! CONSP (list)) | |
1629 | return 1; | |
1630 | ||
ab67260b | 1631 | while (CONSP (conditions)) |
128c0f66 | 1632 | { |
ab67260b | 1633 | Lisp_Object this, tail; |
03699b14 KR |
1634 | this = XCAR (conditions); |
1635 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
1636 | if (EQ (XCAR (tail), this)) | |
128c0f66 | 1637 | return 1; |
03699b14 | 1638 | conditions = XCDR (conditions); |
128c0f66 | 1639 | } |
ab67260b | 1640 | return 0; |
128c0f66 RM |
1641 | } |
1642 | ||
1882aa38 | 1643 | /* Return true if an error with condition-symbols CONDITIONS, |
fc950e09 | 1644 | and described by SIGNAL-DATA, should skip the debugger |
1b1acc13 | 1645 | according to debugger-ignored-errors. */ |
fc950e09 | 1646 | |
1882aa38 | 1647 | static bool |
d3da34e0 | 1648 | skip_debugger (Lisp_Object conditions, Lisp_Object data) |
fc950e09 KH |
1649 | { |
1650 | Lisp_Object tail; | |
1882aa38 | 1651 | bool first_string = 1; |
fc950e09 KH |
1652 | Lisp_Object error_message; |
1653 | ||
17401c97 GM |
1654 | error_message = Qnil; |
1655 | for (tail = Vdebug_ignored_errors; CONSP (tail); tail = XCDR (tail)) | |
fc950e09 | 1656 | { |
03699b14 | 1657 | if (STRINGP (XCAR (tail))) |
fc950e09 KH |
1658 | { |
1659 | if (first_string) | |
1660 | { | |
1661 | error_message = Ferror_message_string (data); | |
1662 | first_string = 0; | |
1663 | } | |
177c0ea7 | 1664 | |
03699b14 | 1665 | if (fast_string_match (XCAR (tail), error_message) >= 0) |
fc950e09 KH |
1666 | return 1; |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | Lisp_Object contail; | |
1671 | ||
17401c97 | 1672 | for (contail = conditions; CONSP (contail); contail = XCDR (contail)) |
03699b14 | 1673 | if (EQ (XCAR (tail), XCAR (contail))) |
fc950e09 KH |
1674 | return 1; |
1675 | } | |
1676 | } | |
1677 | ||
1678 | return 0; | |
1679 | } | |
1680 | ||
ddaa36e1 | 1681 | /* Call the debugger if calling it is currently enabled for CONDITIONS. |
7d47b580 JB |
1682 | SIG and DATA describe the signal. There are two ways to pass them: |
1683 | = SIG is the error symbol, and DATA is the rest of the data. | |
1684 | = SIG is nil, and DATA is (SYMBOL . REST-OF-DATA). | |
1685 | This is for memory-full errors only. */ | |
1882aa38 | 1686 | static bool |
d3da34e0 | 1687 | maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig, Lisp_Object data) |
ddaa36e1 AS |
1688 | { |
1689 | Lisp_Object combined_data; | |
1690 | ||
1691 | combined_data = Fcons (sig, data); | |
1692 | ||
1693 | if ( | |
1694 | /* Don't try to run the debugger with interrupts blocked. | |
1695 | The editing loop would return anyway. */ | |
4d7e6e51 | 1696 | ! input_blocked_p () |
45b82ad0 | 1697 | && NILP (Vinhibit_debugger) |
ddaa36e1 AS |
1698 | /* Does user want to enter debugger for this kind of error? */ |
1699 | && (EQ (sig, Qquit) | |
1700 | ? debug_on_quit | |
1701 | : wants_debugger (Vdebug_on_error, conditions)) | |
1702 | && ! skip_debugger (conditions, combined_data) | |
f6d62986 | 1703 | /* RMS: What's this for? */ |
ddaa36e1 AS |
1704 | && when_entered_debugger < num_nonmacro_input_events) |
1705 | { | |
1706 | call_debugger (Fcons (Qerror, Fcons (combined_data, Qnil))); | |
1707 | return 1; | |
1708 | } | |
1709 | ||
1710 | return 0; | |
1711 | } | |
1712 | ||
db9f0278 | 1713 | static Lisp_Object |
7d47b580 | 1714 | find_handler_clause (Lisp_Object handlers, Lisp_Object conditions) |
db9f0278 JB |
1715 | { |
1716 | register Lisp_Object h; | |
db9f0278 | 1717 | |
f01cbfdd RS |
1718 | /* t is used by handlers for all conditions, set up by C code. */ |
1719 | if (EQ (handlers, Qt)) | |
db9f0278 | 1720 | return Qt; |
f01cbfdd | 1721 | |
61ede770 RS |
1722 | /* error is used similarly, but means print an error message |
1723 | and run the debugger if that is enabled. */ | |
e7f7fbaa SM |
1724 | if (EQ (handlers, Qerror)) |
1725 | return Qt; | |
f01cbfdd | 1726 | |
e7f7fbaa | 1727 | for (h = handlers; CONSP (h); h = XCDR (h)) |
db9f0278 | 1728 | { |
e7f7fbaa SM |
1729 | Lisp_Object handler = XCAR (h); |
1730 | Lisp_Object condit, tem; | |
5f96776a | 1731 | |
5f96776a | 1732 | if (!CONSP (handler)) |
db9f0278 | 1733 | continue; |
e7f7fbaa | 1734 | condit = XCAR (handler); |
5f96776a RS |
1735 | /* Handle a single condition name in handler HANDLER. */ |
1736 | if (SYMBOLP (condit)) | |
1737 | { | |
1738 | tem = Fmemq (Fcar (handler), conditions); | |
1739 | if (!NILP (tem)) | |
1740 | return handler; | |
1741 | } | |
1742 | /* Handle a list of condition names in handler HANDLER. */ | |
1743 | else if (CONSP (condit)) | |
1744 | { | |
f01cbfdd RS |
1745 | Lisp_Object tail; |
1746 | for (tail = condit; CONSP (tail); tail = XCDR (tail)) | |
5f96776a | 1747 | { |
e7f7fbaa | 1748 | tem = Fmemq (XCAR (tail), conditions); |
5f96776a | 1749 | if (!NILP (tem)) |
e7f7fbaa | 1750 | return handler; |
5f96776a RS |
1751 | } |
1752 | } | |
db9f0278 | 1753 | } |
f01cbfdd | 1754 | |
db9f0278 JB |
1755 | return Qnil; |
1756 | } | |
1757 | ||
db9f0278 | 1758 | |
f6d62986 | 1759 | /* Dump an error message; called like vprintf. */ |
db9f0278 | 1760 | void |
b3ffc17c | 1761 | verror (const char *m, va_list ap) |
db9f0278 | 1762 | { |
70476b54 | 1763 | char buf[4000]; |
c2d1e36d PE |
1764 | ptrdiff_t size = sizeof buf; |
1765 | ptrdiff_t size_max = STRING_BYTES_BOUND + 1; | |
9125da08 | 1766 | char *buffer = buf; |
c2d1e36d | 1767 | ptrdiff_t used; |
9125da08 RS |
1768 | Lisp_Object string; |
1769 | ||
d749b01b | 1770 | used = evxprintf (&buffer, &size, buf, size_max, m, ap); |
5fdb398c | 1771 | string = make_string (buffer, used); |
eb3f1cc8 | 1772 | if (buffer != buf) |
9ae6734f | 1773 | xfree (buffer); |
9125da08 | 1774 | |
734d55a2 | 1775 | xsignal1 (Qerror, string); |
db9f0278 | 1776 | } |
b3ffc17c DN |
1777 | |
1778 | ||
f6d62986 | 1779 | /* Dump an error message; called like printf. */ |
b3ffc17c DN |
1780 | |
1781 | /* VARARGS 1 */ | |
1782 | void | |
1783 | error (const char *m, ...) | |
1784 | { | |
1785 | va_list ap; | |
1786 | va_start (ap, m); | |
1787 | verror (m, ap); | |
1788 | va_end (ap); | |
1789 | } | |
db9f0278 | 1790 | \f |
a7ca3326 | 1791 | DEFUN ("commandp", Fcommandp, Scommandp, 1, 2, 0, |
9dbc9081 PJ |
1792 | doc: /* Non-nil if FUNCTION makes provisions for interactive calling. |
1793 | This means it contains a description for how to read arguments to give it. | |
1794 | The value is nil for an invalid function or a symbol with no function | |
1795 | definition. | |
1796 | ||
1797 | Interactively callable functions include strings and vectors (treated | |
1798 | as keyboard macros), lambda-expressions that contain a top-level call | |
1799 | to `interactive', autoload definitions made by `autoload' with non-nil | |
1800 | fourth argument, and some of the built-in functions of Lisp. | |
1801 | ||
e72706be RS |
1802 | Also, a symbol satisfies `commandp' if its function definition does so. |
1803 | ||
1804 | If the optional argument FOR-CALL-INTERACTIVELY is non-nil, | |
769b4fb2 | 1805 | then strings and vectors are not accepted. */) |
5842a27b | 1806 | (Lisp_Object function, Lisp_Object for_call_interactively) |
db9f0278 JB |
1807 | { |
1808 | register Lisp_Object fun; | |
1809 | register Lisp_Object funcar; | |
52b71f49 | 1810 | Lisp_Object if_prop = Qnil; |
db9f0278 JB |
1811 | |
1812 | fun = function; | |
1813 | ||
52b71f49 SM |
1814 | fun = indirect_function (fun); /* Check cycles. */ |
1815 | if (NILP (fun) || EQ (fun, Qunbound)) | |
ffd56f97 | 1816 | return Qnil; |
db9f0278 | 1817 | |
52b71f49 SM |
1818 | /* Check an `interactive-form' property if present, analogous to the |
1819 | function-documentation property. */ | |
1820 | fun = function; | |
1821 | while (SYMBOLP (fun)) | |
1822 | { | |
2b9aa051 | 1823 | Lisp_Object tmp = Fget (fun, Qinteractive_form); |
52b71f49 SM |
1824 | if (!NILP (tmp)) |
1825 | if_prop = Qt; | |
1826 | fun = Fsymbol_function (fun); | |
1827 | } | |
1828 | ||
db9f0278 JB |
1829 | /* Emacs primitives are interactive if their DEFUN specifies an |
1830 | interactive spec. */ | |
90165123 | 1831 | if (SUBRP (fun)) |
04724b69 | 1832 | return XSUBR (fun)->intspec ? Qt : if_prop; |
db9f0278 JB |
1833 | |
1834 | /* Bytecode objects are interactive if they are long enough to | |
1835 | have an element whose index is COMPILED_INTERACTIVE, which is | |
1836 | where the interactive spec is stored. */ | |
90165123 | 1837 | else if (COMPILEDP (fun)) |
845975f5 | 1838 | return ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE |
52b71f49 | 1839 | ? Qt : if_prop); |
db9f0278 JB |
1840 | |
1841 | /* Strings and vectors are keyboard macros. */ | |
52b71f49 | 1842 | if (STRINGP (fun) || VECTORP (fun)) |
6e33efc4 | 1843 | return (NILP (for_call_interactively) ? Qt : Qnil); |
db9f0278 JB |
1844 | |
1845 | /* Lists may represent commands. */ | |
1846 | if (!CONSP (fun)) | |
1847 | return Qnil; | |
ed16fb98 | 1848 | funcar = XCAR (fun); |
b38b1ec0 | 1849 | if (EQ (funcar, Qclosure)) |
7200d79c SM |
1850 | return (!NILP (Fassq (Qinteractive, Fcdr (Fcdr (XCDR (fun))))) |
1851 | ? Qt : if_prop); | |
23aba0ea | 1852 | else if (EQ (funcar, Qlambda)) |
52b71f49 | 1853 | return !NILP (Fassq (Qinteractive, Fcdr (XCDR (fun)))) ? Qt : if_prop; |
b38b1ec0 | 1854 | else if (EQ (funcar, Qautoload)) |
52b71f49 | 1855 | return !NILP (Fcar (Fcdr (Fcdr (XCDR (fun))))) ? Qt : if_prop; |
db9f0278 JB |
1856 | else |
1857 | return Qnil; | |
1858 | } | |
1859 | ||
db9f0278 | 1860 | DEFUN ("autoload", Fautoload, Sautoload, 2, 5, 0, |
9dbc9081 PJ |
1861 | doc: /* Define FUNCTION to autoload from FILE. |
1862 | FUNCTION is a symbol; FILE is a file name string to pass to `load'. | |
1863 | Third arg DOCSTRING is documentation for the function. | |
1864 | Fourth arg INTERACTIVE if non-nil says function can be called interactively. | |
1865 | Fifth arg TYPE indicates the type of the object: | |
1866 | nil or omitted says FUNCTION is a function, | |
1867 | `keymap' says FUNCTION is really a keymap, and | |
1868 | `macro' or t says FUNCTION is really a macro. | |
1869 | Third through fifth args give info about the real definition. | |
1870 | They default to nil. | |
1871 | If FUNCTION is already defined other than as an autoload, | |
1872 | this does nothing and returns nil. */) | |
5842a27b | 1873 | (Lisp_Object function, Lisp_Object file, Lisp_Object docstring, Lisp_Object interactive, Lisp_Object type) |
db9f0278 | 1874 | { |
b7826503 PJ |
1875 | CHECK_SYMBOL (function); |
1876 | CHECK_STRING (file); | |
db9f0278 | 1877 | |
f6d62986 | 1878 | /* If function is defined and not as an autoload, don't override. */ |
5253a5fd SM |
1879 | if ((CONSP (XSYMBOL (function)->function) |
1880 | && EQ (XCAR (XSYMBOL (function)->function), Qautoload))) | |
1881 | /* Remember that the function was already an autoload. */ | |
1882 | LOADHIST_ATTACH (Fcons (Qt, function)); | |
1883 | else if (!EQ (XSYMBOL (function)->function, Qunbound)) | |
db9f0278 JB |
1884 | return Qnil; |
1885 | ||
7973e637 SM |
1886 | if (NILP (Vpurify_flag)) |
1887 | /* Only add entries after dumping, because the ones before are | |
1888 | not useful and else we get loads of them from the loaddefs.el. */ | |
1889 | LOADHIST_ATTACH (Fcons (Qautoload, function)); | |
61b108cc SM |
1890 | else if (EQ (docstring, make_number (0))) |
1891 | /* `read1' in lread.c has found the docstring starting with "\ | |
1892 | and assumed the docstring will be provided by Snarf-documentation, so it | |
1893 | passed us 0 instead. But that leads to accidental sharing in purecopy's | |
1894 | hash-consing, so we use a (hopefully) unique integer instead. */ | |
b263a6b0 | 1895 | docstring = make_number (XUNTAG (function, Lisp_Symbol)); |
a56eaaef DN |
1896 | return Ffset (function, |
1897 | Fpurecopy (list5 (Qautoload, file, docstring, | |
1898 | interactive, type))); | |
db9f0278 JB |
1899 | } |
1900 | ||
1901 | Lisp_Object | |
d3da34e0 | 1902 | un_autoload (Lisp_Object oldqueue) |
db9f0278 JB |
1903 | { |
1904 | register Lisp_Object queue, first, second; | |
1905 | ||
1906 | /* Queue to unwind is current value of Vautoload_queue. | |
1907 | oldqueue is the shadowed value to leave in Vautoload_queue. */ | |
1908 | queue = Vautoload_queue; | |
1909 | Vautoload_queue = oldqueue; | |
1910 | while (CONSP (queue)) | |
1911 | { | |
e509f168 | 1912 | first = XCAR (queue); |
db9f0278 JB |
1913 | second = Fcdr (first); |
1914 | first = Fcar (first); | |
47b82df9 RS |
1915 | if (EQ (first, make_number (0))) |
1916 | Vfeatures = second; | |
db9f0278 JB |
1917 | else |
1918 | Ffset (first, second); | |
e509f168 | 1919 | queue = XCDR (queue); |
db9f0278 JB |
1920 | } |
1921 | return Qnil; | |
1922 | } | |
1923 | ||
ca20916b RS |
1924 | /* Load an autoloaded function. |
1925 | FUNNAME is the symbol which is the function's name. | |
1926 | FUNDEF is the autoload definition (a list). */ | |
1927 | ||
7abaf5cc SM |
1928 | DEFUN ("autoload-do-load", Fautoload_do_load, Sautoload_do_load, 1, 3, 0, |
1929 | doc: /* Load FUNDEF which should be an autoload. | |
1930 | If non-nil, FUNNAME should be the symbol whose function value is FUNDEF, | |
1931 | in which case the function returns the new autoloaded function value. | |
1932 | If equal to `macro', MACRO-ONLY specifies that FUNDEF should only be loaded if | |
1933 | it is defines a macro. */) | |
1934 | (Lisp_Object fundef, Lisp_Object funname, Lisp_Object macro_only) | |
db9f0278 | 1935 | { |
d311d28c | 1936 | ptrdiff_t count = SPECPDL_INDEX (); |
ca20916b | 1937 | struct gcpro gcpro1, gcpro2, gcpro3; |
db9f0278 | 1938 | |
7abaf5cc SM |
1939 | if (!CONSP (fundef) || !EQ (Qautoload, XCAR (fundef))) |
1940 | return fundef; | |
1941 | ||
1942 | if (EQ (macro_only, Qmacro)) | |
1943 | { | |
1944 | Lisp_Object kind = Fnth (make_number (4), fundef); | |
1945 | if (! (EQ (kind, Qt) || EQ (kind, Qmacro))) | |
1946 | return fundef; | |
1947 | } | |
1948 | ||
aea6173f RS |
1949 | /* This is to make sure that loadup.el gives a clear picture |
1950 | of what files are preloaded and when. */ | |
ab4db096 RS |
1951 | if (! NILP (Vpurify_flag)) |
1952 | error ("Attempt to autoload %s while preparing to dump", | |
d5db4077 | 1953 | SDATA (SYMBOL_NAME (funname))); |
ab4db096 | 1954 | |
b7826503 | 1955 | CHECK_SYMBOL (funname); |
7abaf5cc | 1956 | GCPRO3 (funname, fundef, macro_only); |
db9f0278 | 1957 | |
f87740dc | 1958 | /* Preserve the match data. */ |
89f2614d | 1959 | record_unwind_save_match_data (); |
177c0ea7 | 1960 | |
a04ee161 RS |
1961 | /* If autoloading gets an error (which includes the error of failing |
1962 | to define the function being called), we use Vautoload_queue | |
1963 | to undo function definitions and `provide' calls made by | |
1964 | the function. We do this in the specific case of autoloading | |
1965 | because autoloading is not an explicit request "load this file", | |
1966 | but rather a request to "call this function". | |
d3da34e0 | 1967 | |
a04ee161 | 1968 | The value saved here is to be restored into Vautoload_queue. */ |
db9f0278 JB |
1969 | record_unwind_protect (un_autoload, Vautoload_queue); |
1970 | Vautoload_queue = Qt; | |
7abaf5cc SM |
1971 | /* If `macro_only', assume this autoload to be a "best-effort", |
1972 | so don't signal an error if autoloading fails. */ | |
1973 | Fload (Fcar (Fcdr (fundef)), macro_only, Qt, Qnil, Qt); | |
2a49b6e5 | 1974 | |
db9f0278 JB |
1975 | /* Once loading finishes, don't undo it. */ |
1976 | Vautoload_queue = Qt; | |
1977 | unbind_to (count, Qnil); | |
1978 | ||
ca20916b | 1979 | UNGCPRO; |
7abaf5cc SM |
1980 | |
1981 | if (NILP (funname)) | |
1982 | return Qnil; | |
1983 | else | |
1984 | { | |
1985 | Lisp_Object fun = Findirect_function (funname, Qnil); | |
1986 | ||
1987 | if (!NILP (Fequal (fun, fundef))) | |
1988 | error ("Autoloading failed to define function %s", | |
1989 | SDATA (SYMBOL_NAME (funname))); | |
1990 | else | |
1991 | return fun; | |
1992 | } | |
db9f0278 | 1993 | } |
4c576a83 | 1994 | |
db9f0278 | 1995 | \f |
a7ca3326 | 1996 | DEFUN ("eval", Feval, Seval, 1, 2, 0, |
a0ee6f27 SM |
1997 | doc: /* Evaluate FORM and return its value. |
1998 | If LEXICAL is t, evaluate using lexical scoping. */) | |
1999 | (Lisp_Object form, Lisp_Object lexical) | |
defb1411 | 2000 | { |
d311d28c | 2001 | ptrdiff_t count = SPECPDL_INDEX (); |
a0ee6f27 SM |
2002 | specbind (Qinternal_interpreter_environment, |
2003 | NILP (lexical) ? Qnil : Fcons (Qt, Qnil)); | |
defb1411 SM |
2004 | return unbind_to (count, eval_sub (form)); |
2005 | } | |
2006 | ||
2007 | /* Eval a sub-expression of the current expression (i.e. in the same | |
2008 | lexical scope). */ | |
2009 | Lisp_Object | |
2010 | eval_sub (Lisp_Object form) | |
db9f0278 JB |
2011 | { |
2012 | Lisp_Object fun, val, original_fun, original_args; | |
2013 | Lisp_Object funcar; | |
2014 | struct backtrace backtrace; | |
2015 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2016 | ||
90165123 | 2017 | if (SYMBOLP (form)) |
b9598260 | 2018 | { |
f07a954e SM |
2019 | /* Look up its binding in the lexical environment. |
2020 | We do not pay attention to the declared_special flag here, since we | |
2021 | already did that when let-binding the variable. */ | |
2022 | Lisp_Object lex_binding | |
2023 | = !NILP (Vinternal_interpreter_environment) /* Mere optimization! */ | |
2024 | ? Fassq (form, Vinternal_interpreter_environment) | |
2025 | : Qnil; | |
2026 | if (CONSP (lex_binding)) | |
2027 | return XCDR (lex_binding); | |
2028 | else | |
2029 | return Fsymbol_value (form); | |
b9598260 SM |
2030 | } |
2031 | ||
db9f0278 JB |
2032 | if (!CONSP (form)) |
2033 | return form; | |
2034 | ||
2035 | QUIT; | |
765e61e3 | 2036 | maybe_gc (); |
db9f0278 JB |
2037 | |
2038 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2039 | { | |
2040 | if (max_lisp_eval_depth < 100) | |
2041 | max_lisp_eval_depth = 100; | |
2042 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2043 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2044 | } |
2045 | ||
7d7bbefd DA |
2046 | original_fun = XCAR (form); |
2047 | original_args = XCDR (form); | |
db9f0278 JB |
2048 | |
2049 | backtrace.next = backtrace_list; | |
e7c1b6ef | 2050 | backtrace.function = original_fun; /* This also protects them from gc. */ |
db9f0278 JB |
2051 | backtrace.args = &original_args; |
2052 | backtrace.nargs = UNEVALLED; | |
db9f0278 | 2053 | backtrace.debug_on_exit = 0; |
c2d7786e | 2054 | backtrace_list = &backtrace; |
db9f0278 JB |
2055 | |
2056 | if (debug_on_next_call) | |
2057 | do_debug_on_call (Qt); | |
2058 | ||
2059 | /* At this point, only original_fun and original_args | |
f6d62986 | 2060 | have values that will be used below. */ |
db9f0278 | 2061 | retry: |
8788120f KS |
2062 | |
2063 | /* Optimize for no indirection. */ | |
2064 | fun = original_fun; | |
2065 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
c644523b | 2066 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) |
8788120f | 2067 | fun = indirect_function (fun); |
db9f0278 | 2068 | |
90165123 | 2069 | if (SUBRP (fun)) |
db9f0278 JB |
2070 | { |
2071 | Lisp_Object numargs; | |
166c822d | 2072 | Lisp_Object argvals[8]; |
db9f0278 JB |
2073 | Lisp_Object args_left; |
2074 | register int i, maxargs; | |
2075 | ||
2076 | args_left = original_args; | |
2077 | numargs = Flength (args_left); | |
2078 | ||
7e63e0c3 | 2079 | check_cons_list (); |
c1788fbc | 2080 | |
f6d62986 SM |
2081 | if (XINT (numargs) < XSUBR (fun)->min_args |
2082 | || (XSUBR (fun)->max_args >= 0 | |
2083 | && XSUBR (fun)->max_args < XINT (numargs))) | |
734d55a2 | 2084 | xsignal2 (Qwrong_number_of_arguments, original_fun, numargs); |
db9f0278 | 2085 | |
ef1b0ba7 | 2086 | else if (XSUBR (fun)->max_args == UNEVALLED) |
bbc6b304 | 2087 | val = (XSUBR (fun)->function.aUNEVALLED) (args_left); |
ef1b0ba7 | 2088 | else if (XSUBR (fun)->max_args == MANY) |
db9f0278 | 2089 | { |
f6d62986 | 2090 | /* Pass a vector of evaluated arguments. */ |
db9f0278 | 2091 | Lisp_Object *vals; |
f66c7cf8 | 2092 | ptrdiff_t argnum = 0; |
3a7a9129 | 2093 | USE_SAFE_ALLOCA; |
db9f0278 | 2094 | |
b72e0717 | 2095 | SAFE_ALLOCA_LISP (vals, XINT (numargs)); |
db9f0278 JB |
2096 | |
2097 | GCPRO3 (args_left, fun, fun); | |
2098 | gcpro3.var = vals; | |
2099 | gcpro3.nvars = 0; | |
2100 | ||
265a9e55 | 2101 | while (!NILP (args_left)) |
db9f0278 | 2102 | { |
defb1411 | 2103 | vals[argnum++] = eval_sub (Fcar (args_left)); |
db9f0278 JB |
2104 | args_left = Fcdr (args_left); |
2105 | gcpro3.nvars = argnum; | |
2106 | } | |
db9f0278 JB |
2107 | |
2108 | backtrace.args = vals; | |
2109 | backtrace.nargs = XINT (numargs); | |
2110 | ||
d5273788 | 2111 | val = (XSUBR (fun)->function.aMANY) (XINT (numargs), vals); |
a6e3fa71 | 2112 | UNGCPRO; |
3a7a9129 | 2113 | SAFE_FREE (); |
db9f0278 | 2114 | } |
ef1b0ba7 | 2115 | else |
db9f0278 | 2116 | { |
ef1b0ba7 SM |
2117 | GCPRO3 (args_left, fun, fun); |
2118 | gcpro3.var = argvals; | |
2119 | gcpro3.nvars = 0; | |
db9f0278 | 2120 | |
ef1b0ba7 SM |
2121 | maxargs = XSUBR (fun)->max_args; |
2122 | for (i = 0; i < maxargs; args_left = Fcdr (args_left)) | |
2123 | { | |
a0ee6f27 | 2124 | argvals[i] = eval_sub (Fcar (args_left)); |
ef1b0ba7 SM |
2125 | gcpro3.nvars = ++i; |
2126 | } | |
db9f0278 | 2127 | |
ef1b0ba7 | 2128 | UNGCPRO; |
db9f0278 | 2129 | |
ef1b0ba7 SM |
2130 | backtrace.args = argvals; |
2131 | backtrace.nargs = XINT (numargs); | |
2132 | ||
2133 | switch (i) | |
2134 | { | |
2135 | case 0: | |
2136 | val = (XSUBR (fun)->function.a0 ()); | |
2137 | break; | |
2138 | case 1: | |
2139 | val = (XSUBR (fun)->function.a1 (argvals[0])); | |
2140 | break; | |
2141 | case 2: | |
2142 | val = (XSUBR (fun)->function.a2 (argvals[0], argvals[1])); | |
2143 | break; | |
2144 | case 3: | |
2145 | val = (XSUBR (fun)->function.a3 | |
2146 | (argvals[0], argvals[1], argvals[2])); | |
2147 | break; | |
2148 | case 4: | |
2149 | val = (XSUBR (fun)->function.a4 | |
2150 | (argvals[0], argvals[1], argvals[2], argvals[3])); | |
2151 | break; | |
2152 | case 5: | |
2153 | val = (XSUBR (fun)->function.a5 | |
2154 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2155 | argvals[4])); | |
2156 | break; | |
2157 | case 6: | |
2158 | val = (XSUBR (fun)->function.a6 | |
2159 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2160 | argvals[4], argvals[5])); | |
2161 | break; | |
2162 | case 7: | |
2163 | val = (XSUBR (fun)->function.a7 | |
2164 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2165 | argvals[4], argvals[5], argvals[6])); | |
2166 | break; | |
2167 | ||
2168 | case 8: | |
2169 | val = (XSUBR (fun)->function.a8 | |
2170 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2171 | argvals[4], argvals[5], argvals[6], argvals[7])); | |
2172 | break; | |
2173 | ||
2174 | default: | |
2175 | /* Someone has created a subr that takes more arguments than | |
2176 | is supported by this code. We need to either rewrite the | |
2177 | subr to use a different argument protocol, or add more | |
2178 | cases to this switch. */ | |
1088b922 | 2179 | emacs_abort (); |
ef1b0ba7 | 2180 | } |
db9f0278 JB |
2181 | } |
2182 | } | |
ef1b0ba7 | 2183 | else if (COMPILEDP (fun)) |
defb1411 | 2184 | val = apply_lambda (fun, original_args); |
db9f0278 JB |
2185 | else |
2186 | { | |
8788120f | 2187 | if (EQ (fun, Qunbound)) |
734d55a2 | 2188 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 2189 | if (!CONSP (fun)) |
734d55a2 KS |
2190 | xsignal1 (Qinvalid_function, original_fun); |
2191 | funcar = XCAR (fun); | |
90165123 | 2192 | if (!SYMBOLP (funcar)) |
734d55a2 | 2193 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
2194 | if (EQ (funcar, Qautoload)) |
2195 | { | |
7abaf5cc | 2196 | Fautoload_do_load (fun, original_fun, Qnil); |
db9f0278 JB |
2197 | goto retry; |
2198 | } | |
2199 | if (EQ (funcar, Qmacro)) | |
8be3a09c SM |
2200 | { |
2201 | ptrdiff_t count = SPECPDL_INDEX (); | |
8be3a09c SM |
2202 | Lisp_Object exp; |
2203 | /* Bind lexical-binding during expansion of the macro, so the | |
2204 | macro can know reliably if the code it outputs will be | |
2205 | interpreted using lexical-binding or not. */ | |
2206 | specbind (Qlexical_binding, | |
2207 | NILP (Vinternal_interpreter_environment) ? Qnil : Qt); | |
2208 | exp = apply1 (Fcdr (fun), original_args); | |
2209 | unbind_to (count, Qnil); | |
2210 | val = eval_sub (exp); | |
2211 | } | |
defb1411 SM |
2212 | else if (EQ (funcar, Qlambda) |
2213 | || EQ (funcar, Qclosure)) | |
2214 | val = apply_lambda (fun, original_args); | |
db9f0278 | 2215 | else |
734d55a2 | 2216 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2217 | } |
7e63e0c3 | 2218 | check_cons_list (); |
c1788fbc | 2219 | |
db9f0278 JB |
2220 | lisp_eval_depth--; |
2221 | if (backtrace.debug_on_exit) | |
2222 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2223 | backtrace_list = backtrace.next; | |
824eb35e | 2224 | |
db9f0278 JB |
2225 | return val; |
2226 | } | |
2227 | \f | |
8edd4a2b | 2228 | DEFUN ("apply", Fapply, Sapply, 1, MANY, 0, |
9dbc9081 PJ |
2229 | doc: /* Call FUNCTION with our remaining args, using our last arg as list of args. |
2230 | Then return the value FUNCTION returns. | |
2231 | Thus, (apply '+ 1 2 '(3 4)) returns 10. | |
2232 | usage: (apply FUNCTION &rest ARGUMENTS) */) | |
f66c7cf8 | 2233 | (ptrdiff_t nargs, Lisp_Object *args) |
db9f0278 | 2234 | { |
d311d28c PE |
2235 | ptrdiff_t i; |
2236 | EMACS_INT numargs; | |
db9f0278 JB |
2237 | register Lisp_Object spread_arg; |
2238 | register Lisp_Object *funcall_args; | |
3a7a9129 | 2239 | Lisp_Object fun, retval; |
96d44c64 | 2240 | struct gcpro gcpro1; |
3a7a9129 | 2241 | USE_SAFE_ALLOCA; |
db9f0278 JB |
2242 | |
2243 | fun = args [0]; | |
2244 | funcall_args = 0; | |
2245 | spread_arg = args [nargs - 1]; | |
b7826503 | 2246 | CHECK_LIST (spread_arg); |
177c0ea7 | 2247 | |
db9f0278 JB |
2248 | numargs = XINT (Flength (spread_arg)); |
2249 | ||
2250 | if (numargs == 0) | |
2251 | return Ffuncall (nargs - 1, args); | |
2252 | else if (numargs == 1) | |
2253 | { | |
03699b14 | 2254 | args [nargs - 1] = XCAR (spread_arg); |
db9f0278 JB |
2255 | return Ffuncall (nargs, args); |
2256 | } | |
2257 | ||
a6e3fa71 | 2258 | numargs += nargs - 2; |
db9f0278 | 2259 | |
8788120f KS |
2260 | /* Optimize for no indirection. */ |
2261 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
c644523b | 2262 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) |
8788120f | 2263 | fun = indirect_function (fun); |
ffd56f97 | 2264 | if (EQ (fun, Qunbound)) |
db9f0278 | 2265 | { |
f6d62986 | 2266 | /* Let funcall get the error. */ |
ffd56f97 JB |
2267 | fun = args[0]; |
2268 | goto funcall; | |
db9f0278 JB |
2269 | } |
2270 | ||
90165123 | 2271 | if (SUBRP (fun)) |
db9f0278 JB |
2272 | { |
2273 | if (numargs < XSUBR (fun)->min_args | |
2274 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) | |
f6d62986 | 2275 | goto funcall; /* Let funcall get the error. */ |
c5101a77 | 2276 | else if (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args > numargs) |
db9f0278 JB |
2277 | { |
2278 | /* Avoid making funcall cons up a yet another new vector of arguments | |
f6d62986 | 2279 | by explicitly supplying nil's for optional values. */ |
b72e0717 | 2280 | SAFE_ALLOCA_LISP (funcall_args, 1 + XSUBR (fun)->max_args); |
db9f0278 JB |
2281 | for (i = numargs; i < XSUBR (fun)->max_args;) |
2282 | funcall_args[++i] = Qnil; | |
96d44c64 SM |
2283 | GCPRO1 (*funcall_args); |
2284 | gcpro1.nvars = 1 + XSUBR (fun)->max_args; | |
db9f0278 JB |
2285 | } |
2286 | } | |
2287 | funcall: | |
2288 | /* We add 1 to numargs because funcall_args includes the | |
2289 | function itself as well as its arguments. */ | |
2290 | if (!funcall_args) | |
a6e3fa71 | 2291 | { |
b72e0717 | 2292 | SAFE_ALLOCA_LISP (funcall_args, 1 + numargs); |
96d44c64 SM |
2293 | GCPRO1 (*funcall_args); |
2294 | gcpro1.nvars = 1 + numargs; | |
a6e3fa71 JB |
2295 | } |
2296 | ||
663e2b3f | 2297 | memcpy (funcall_args, args, nargs * word_size); |
db9f0278 JB |
2298 | /* Spread the last arg we got. Its first element goes in |
2299 | the slot that it used to occupy, hence this value of I. */ | |
2300 | i = nargs - 1; | |
265a9e55 | 2301 | while (!NILP (spread_arg)) |
db9f0278 | 2302 | { |
03699b14 KR |
2303 | funcall_args [i++] = XCAR (spread_arg); |
2304 | spread_arg = XCDR (spread_arg); | |
db9f0278 | 2305 | } |
a6e3fa71 | 2306 | |
96d44c64 | 2307 | /* By convention, the caller needs to gcpro Ffuncall's args. */ |
3a7a9129 CY |
2308 | retval = Ffuncall (gcpro1.nvars, funcall_args); |
2309 | UNGCPRO; | |
2310 | SAFE_FREE (); | |
2311 | ||
2312 | return retval; | |
db9f0278 JB |
2313 | } |
2314 | \f | |
ff936e53 SM |
2315 | /* Run hook variables in various ways. */ |
2316 | ||
f6d62986 | 2317 | static Lisp_Object |
f66c7cf8 | 2318 | funcall_nil (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2319 | { |
2320 | Ffuncall (nargs, args); | |
2321 | return Qnil; | |
2322 | } | |
ff936e53 | 2323 | |
a7ca3326 | 2324 | DEFUN ("run-hooks", Frun_hooks, Srun_hooks, 0, MANY, 0, |
9f685258 | 2325 | doc: /* Run each hook in HOOKS. |
9dbc9081 PJ |
2326 | Each argument should be a symbol, a hook variable. |
2327 | These symbols are processed in the order specified. | |
2328 | If a hook symbol has a non-nil value, that value may be a function | |
2329 | or a list of functions to be called to run the hook. | |
2330 | If the value is a function, it is called with no arguments. | |
2331 | If it is a list, the elements are called, in order, with no arguments. | |
2332 | ||
9f685258 LK |
2333 | Major modes should not use this function directly to run their mode |
2334 | hook; they should use `run-mode-hooks' instead. | |
2335 | ||
72e85d5d RS |
2336 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2337 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2338 | usage: (run-hooks &rest HOOKS) */) |
f66c7cf8 | 2339 | (ptrdiff_t nargs, Lisp_Object *args) |
ff936e53 SM |
2340 | { |
2341 | Lisp_Object hook[1]; | |
f66c7cf8 | 2342 | ptrdiff_t i; |
ff936e53 SM |
2343 | |
2344 | for (i = 0; i < nargs; i++) | |
2345 | { | |
2346 | hook[0] = args[i]; | |
f6d62986 | 2347 | run_hook_with_args (1, hook, funcall_nil); |
ff936e53 SM |
2348 | } |
2349 | ||
2350 | return Qnil; | |
2351 | } | |
177c0ea7 | 2352 | |
a7ca3326 | 2353 | DEFUN ("run-hook-with-args", Frun_hook_with_args, |
9dbc9081 PJ |
2354 | Srun_hook_with_args, 1, MANY, 0, |
2355 | doc: /* Run HOOK with the specified arguments ARGS. | |
d393cefb GM |
2356 | HOOK should be a symbol, a hook variable. The value of HOOK |
2357 | may be nil, a function, or a list of functions. Call each | |
2358 | function in order with arguments ARGS. The final return value | |
2359 | is unspecified. | |
9dbc9081 | 2360 | |
72e85d5d RS |
2361 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2362 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2363 | usage: (run-hook-with-args HOOK &rest ARGS) */) |
f66c7cf8 | 2364 | (ptrdiff_t nargs, Lisp_Object *args) |
ff936e53 | 2365 | { |
f6d62986 | 2366 | return run_hook_with_args (nargs, args, funcall_nil); |
ff936e53 SM |
2367 | } |
2368 | ||
d393cefb GM |
2369 | /* NB this one still documents a specific non-nil return value. |
2370 | (As did run-hook-with-args and run-hook-with-args-until-failure | |
2371 | until they were changed in 24.1.) */ | |
a0d76c27 | 2372 | DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success, |
9dbc9081 PJ |
2373 | Srun_hook_with_args_until_success, 1, MANY, 0, |
2374 | doc: /* Run HOOK with the specified arguments ARGS. | |
d393cefb GM |
2375 | HOOK should be a symbol, a hook variable. The value of HOOK |
2376 | may be nil, a function, or a list of functions. Call each | |
2377 | function in order with arguments ARGS, stopping at the first | |
2378 | one that returns non-nil, and return that value. Otherwise (if | |
2379 | all functions return nil, or if there are no functions to call), | |
2380 | return nil. | |
9dbc9081 | 2381 | |
72e85d5d RS |
2382 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2383 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2384 | usage: (run-hook-with-args-until-success HOOK &rest ARGS) */) |
f66c7cf8 | 2385 | (ptrdiff_t nargs, Lisp_Object *args) |
b0b667cb | 2386 | { |
f6d62986 SM |
2387 | return run_hook_with_args (nargs, args, Ffuncall); |
2388 | } | |
2389 | ||
2390 | static Lisp_Object | |
f66c7cf8 | 2391 | funcall_not (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2392 | { |
2393 | return NILP (Ffuncall (nargs, args)) ? Qt : Qnil; | |
ff936e53 SM |
2394 | } |
2395 | ||
a7ca3326 | 2396 | DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure, |
9dbc9081 PJ |
2397 | Srun_hook_with_args_until_failure, 1, MANY, 0, |
2398 | doc: /* Run HOOK with the specified arguments ARGS. | |
d393cefb GM |
2399 | HOOK should be a symbol, a hook variable. The value of HOOK |
2400 | may be nil, a function, or a list of functions. Call each | |
2401 | function in order with arguments ARGS, stopping at the first | |
2402 | one that returns nil, and return nil. Otherwise (if all functions | |
2403 | return non-nil, or if there are no functions to call), return non-nil | |
2404 | \(do not rely on the precise return value in this case). | |
9dbc9081 | 2405 | |
72e85d5d RS |
2406 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2407 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2408 | usage: (run-hook-with-args-until-failure HOOK &rest ARGS) */) |
f66c7cf8 | 2409 | (ptrdiff_t nargs, Lisp_Object *args) |
ff936e53 | 2410 | { |
f6d62986 | 2411 | return NILP (run_hook_with_args (nargs, args, funcall_not)) ? Qt : Qnil; |
ff936e53 SM |
2412 | } |
2413 | ||
f6d62986 | 2414 | static Lisp_Object |
f66c7cf8 | 2415 | run_hook_wrapped_funcall (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2416 | { |
2417 | Lisp_Object tmp = args[0], ret; | |
2418 | args[0] = args[1]; | |
2419 | args[1] = tmp; | |
2420 | ret = Ffuncall (nargs, args); | |
2421 | args[1] = args[0]; | |
2422 | args[0] = tmp; | |
2423 | return ret; | |
2424 | } | |
2425 | ||
2426 | DEFUN ("run-hook-wrapped", Frun_hook_wrapped, Srun_hook_wrapped, 2, MANY, 0, | |
2427 | doc: /* Run HOOK, passing each function through WRAP-FUNCTION. | |
2428 | I.e. instead of calling each function FUN directly with arguments ARGS, | |
2429 | it calls WRAP-FUNCTION with arguments FUN and ARGS. | |
2430 | As soon as a call to WRAP-FUNCTION returns non-nil, `run-hook-wrapped' | |
2431 | aborts and returns that value. | |
2432 | usage: (run-hook-wrapped HOOK WRAP-FUNCTION &rest ARGS) */) | |
f66c7cf8 | 2433 | (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2434 | { |
2435 | return run_hook_with_args (nargs, args, run_hook_wrapped_funcall); | |
2436 | } | |
ff936e53 | 2437 | |
c933ea05 RS |
2438 | /* ARGS[0] should be a hook symbol. |
2439 | Call each of the functions in the hook value, passing each of them | |
2440 | as arguments all the rest of ARGS (all NARGS - 1 elements). | |
f6d62986 | 2441 | FUNCALL specifies how to call each function on the hook. |
c933ea05 RS |
2442 | The caller (or its caller, etc) must gcpro all of ARGS, |
2443 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2444 | ||
f6d62986 | 2445 | Lisp_Object |
f66c7cf8 PE |
2446 | run_hook_with_args (ptrdiff_t nargs, Lisp_Object *args, |
2447 | Lisp_Object (*funcall) (ptrdiff_t nargs, Lisp_Object *args)) | |
ff936e53 | 2448 | { |
f6d62986 | 2449 | Lisp_Object sym, val, ret = Qnil; |
fada05d6 | 2450 | struct gcpro gcpro1, gcpro2, gcpro3; |
b0b667cb | 2451 | |
f029ca5f RS |
2452 | /* If we are dying or still initializing, |
2453 | don't do anything--it would probably crash if we tried. */ | |
2454 | if (NILP (Vrun_hooks)) | |
caff32a7 | 2455 | return Qnil; |
f029ca5f | 2456 | |
b0b667cb | 2457 | sym = args[0]; |
aa681b51 | 2458 | val = find_symbol_value (sym); |
ff936e53 | 2459 | |
b0b667cb | 2460 | if (EQ (val, Qunbound) || NILP (val)) |
ff936e53 | 2461 | return ret; |
03699b14 | 2462 | else if (!CONSP (val) || EQ (XCAR (val), Qlambda)) |
b0b667cb KH |
2463 | { |
2464 | args[0] = val; | |
f6d62986 | 2465 | return funcall (nargs, args); |
b0b667cb KH |
2466 | } |
2467 | else | |
2468 | { | |
1faed8ae PE |
2469 | Lisp_Object global_vals = Qnil; |
2470 | GCPRO3 (sym, val, global_vals); | |
cb9d21f8 | 2471 | |
ff936e53 | 2472 | for (; |
f6d62986 | 2473 | CONSP (val) && NILP (ret); |
03699b14 | 2474 | val = XCDR (val)) |
b0b667cb | 2475 | { |
03699b14 | 2476 | if (EQ (XCAR (val), Qt)) |
b0b667cb KH |
2477 | { |
2478 | /* t indicates this hook has a local binding; | |
2479 | it means to run the global binding too. */ | |
1faed8ae PE |
2480 | global_vals = Fdefault_value (sym); |
2481 | if (NILP (global_vals)) continue; | |
b0b667cb | 2482 | |
1faed8ae | 2483 | if (!CONSP (global_vals) || EQ (XCAR (global_vals), Qlambda)) |
b0b667cb | 2484 | { |
1faed8ae | 2485 | args[0] = global_vals; |
f6d62986 | 2486 | ret = funcall (nargs, args); |
8932b1c2 CY |
2487 | } |
2488 | else | |
2489 | { | |
2490 | for (; | |
f6d62986 | 2491 | CONSP (global_vals) && NILP (ret); |
1faed8ae | 2492 | global_vals = XCDR (global_vals)) |
8932b1c2 | 2493 | { |
1faed8ae | 2494 | args[0] = XCAR (global_vals); |
8932b1c2 CY |
2495 | /* In a global value, t should not occur. If it does, we |
2496 | must ignore it to avoid an endless loop. */ | |
2497 | if (!EQ (args[0], Qt)) | |
f6d62986 | 2498 | ret = funcall (nargs, args); |
8932b1c2 | 2499 | } |
b0b667cb KH |
2500 | } |
2501 | } | |
2502 | else | |
2503 | { | |
03699b14 | 2504 | args[0] = XCAR (val); |
f6d62986 | 2505 | ret = funcall (nargs, args); |
b0b667cb KH |
2506 | } |
2507 | } | |
cb9d21f8 RS |
2508 | |
2509 | UNGCPRO; | |
ff936e53 | 2510 | return ret; |
b0b667cb KH |
2511 | } |
2512 | } | |
c933ea05 | 2513 | |
7d48558f RS |
2514 | /* Run the hook HOOK, giving each function the two args ARG1 and ARG2. */ |
2515 | ||
2516 | void | |
d3da34e0 | 2517 | run_hook_with_args_2 (Lisp_Object hook, Lisp_Object arg1, Lisp_Object arg2) |
7d48558f RS |
2518 | { |
2519 | Lisp_Object temp[3]; | |
2520 | temp[0] = hook; | |
2521 | temp[1] = arg1; | |
2522 | temp[2] = arg2; | |
2523 | ||
2524 | Frun_hook_with_args (3, temp); | |
2525 | } | |
ff936e53 | 2526 | \f |
f6d62986 | 2527 | /* Apply fn to arg. */ |
db9f0278 | 2528 | Lisp_Object |
d3da34e0 | 2529 | apply1 (Lisp_Object fn, Lisp_Object arg) |
db9f0278 | 2530 | { |
a6e3fa71 JB |
2531 | struct gcpro gcpro1; |
2532 | ||
2533 | GCPRO1 (fn); | |
265a9e55 | 2534 | if (NILP (arg)) |
a6e3fa71 JB |
2535 | RETURN_UNGCPRO (Ffuncall (1, &fn)); |
2536 | gcpro1.nvars = 2; | |
db9f0278 JB |
2537 | { |
2538 | Lisp_Object args[2]; | |
2539 | args[0] = fn; | |
2540 | args[1] = arg; | |
a6e3fa71 JB |
2541 | gcpro1.var = args; |
2542 | RETURN_UNGCPRO (Fapply (2, args)); | |
db9f0278 | 2543 | } |
db9f0278 JB |
2544 | } |
2545 | ||
f6d62986 | 2546 | /* Call function fn on no arguments. */ |
db9f0278 | 2547 | Lisp_Object |
d3da34e0 | 2548 | call0 (Lisp_Object fn) |
db9f0278 | 2549 | { |
a6e3fa71 JB |
2550 | struct gcpro gcpro1; |
2551 | ||
2552 | GCPRO1 (fn); | |
2553 | RETURN_UNGCPRO (Ffuncall (1, &fn)); | |
db9f0278 JB |
2554 | } |
2555 | ||
f6d62986 | 2556 | /* Call function fn with 1 argument arg1. */ |
db9f0278 JB |
2557 | /* ARGSUSED */ |
2558 | Lisp_Object | |
d3da34e0 | 2559 | call1 (Lisp_Object fn, Lisp_Object arg1) |
db9f0278 | 2560 | { |
a6e3fa71 | 2561 | struct gcpro gcpro1; |
177c0ea7 | 2562 | Lisp_Object args[2]; |
a6e3fa71 | 2563 | |
db9f0278 | 2564 | args[0] = fn; |
15285f9f | 2565 | args[1] = arg1; |
a6e3fa71 JB |
2566 | GCPRO1 (args[0]); |
2567 | gcpro1.nvars = 2; | |
2568 | RETURN_UNGCPRO (Ffuncall (2, args)); | |
db9f0278 JB |
2569 | } |
2570 | ||
f6d62986 | 2571 | /* Call function fn with 2 arguments arg1, arg2. */ |
db9f0278 JB |
2572 | /* ARGSUSED */ |
2573 | Lisp_Object | |
d3da34e0 | 2574 | call2 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2) |
db9f0278 | 2575 | { |
a6e3fa71 | 2576 | struct gcpro gcpro1; |
db9f0278 JB |
2577 | Lisp_Object args[3]; |
2578 | args[0] = fn; | |
15285f9f RS |
2579 | args[1] = arg1; |
2580 | args[2] = arg2; | |
a6e3fa71 JB |
2581 | GCPRO1 (args[0]); |
2582 | gcpro1.nvars = 3; | |
2583 | RETURN_UNGCPRO (Ffuncall (3, args)); | |
db9f0278 JB |
2584 | } |
2585 | ||
f6d62986 | 2586 | /* Call function fn with 3 arguments arg1, arg2, arg3. */ |
db9f0278 JB |
2587 | /* ARGSUSED */ |
2588 | Lisp_Object | |
d3da34e0 | 2589 | call3 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
db9f0278 | 2590 | { |
a6e3fa71 | 2591 | struct gcpro gcpro1; |
db9f0278 JB |
2592 | Lisp_Object args[4]; |
2593 | args[0] = fn; | |
15285f9f RS |
2594 | args[1] = arg1; |
2595 | args[2] = arg2; | |
2596 | args[3] = arg3; | |
a6e3fa71 JB |
2597 | GCPRO1 (args[0]); |
2598 | gcpro1.nvars = 4; | |
2599 | RETURN_UNGCPRO (Ffuncall (4, args)); | |
db9f0278 JB |
2600 | } |
2601 | ||
f6d62986 | 2602 | /* Call function fn with 4 arguments arg1, arg2, arg3, arg4. */ |
a5a44b91 JB |
2603 | /* ARGSUSED */ |
2604 | Lisp_Object | |
d3da34e0 JB |
2605 | call4 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2606 | Lisp_Object arg4) | |
a5a44b91 JB |
2607 | { |
2608 | struct gcpro gcpro1; | |
a5a44b91 JB |
2609 | Lisp_Object args[5]; |
2610 | args[0] = fn; | |
15285f9f RS |
2611 | args[1] = arg1; |
2612 | args[2] = arg2; | |
2613 | args[3] = arg3; | |
2614 | args[4] = arg4; | |
a5a44b91 JB |
2615 | GCPRO1 (args[0]); |
2616 | gcpro1.nvars = 5; | |
2617 | RETURN_UNGCPRO (Ffuncall (5, args)); | |
a5a44b91 JB |
2618 | } |
2619 | ||
f6d62986 | 2620 | /* Call function fn with 5 arguments arg1, arg2, arg3, arg4, arg5. */ |
15285f9f RS |
2621 | /* ARGSUSED */ |
2622 | Lisp_Object | |
d3da34e0 JB |
2623 | call5 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2624 | Lisp_Object arg4, Lisp_Object arg5) | |
15285f9f RS |
2625 | { |
2626 | struct gcpro gcpro1; | |
15285f9f RS |
2627 | Lisp_Object args[6]; |
2628 | args[0] = fn; | |
2629 | args[1] = arg1; | |
2630 | args[2] = arg2; | |
2631 | args[3] = arg3; | |
2632 | args[4] = arg4; | |
2633 | args[5] = arg5; | |
2634 | GCPRO1 (args[0]); | |
2635 | gcpro1.nvars = 6; | |
2636 | RETURN_UNGCPRO (Ffuncall (6, args)); | |
15285f9f RS |
2637 | } |
2638 | ||
f6d62986 | 2639 | /* Call function fn with 6 arguments arg1, arg2, arg3, arg4, arg5, arg6. */ |
15285f9f RS |
2640 | /* ARGSUSED */ |
2641 | Lisp_Object | |
d3da34e0 JB |
2642 | call6 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2643 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6) | |
15285f9f RS |
2644 | { |
2645 | struct gcpro gcpro1; | |
15285f9f RS |
2646 | Lisp_Object args[7]; |
2647 | args[0] = fn; | |
2648 | args[1] = arg1; | |
2649 | args[2] = arg2; | |
2650 | args[3] = arg3; | |
2651 | args[4] = arg4; | |
2652 | args[5] = arg5; | |
2653 | args[6] = arg6; | |
2654 | GCPRO1 (args[0]); | |
2655 | gcpro1.nvars = 7; | |
2656 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
15285f9f RS |
2657 | } |
2658 | ||
f6d62986 | 2659 | /* Call function fn with 7 arguments arg1, arg2, arg3, arg4, arg5, arg6, arg7. */ |
574c05e2 KK |
2660 | /* ARGSUSED */ |
2661 | Lisp_Object | |
d3da34e0 JB |
2662 | call7 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2663 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6, Lisp_Object arg7) | |
574c05e2 KK |
2664 | { |
2665 | struct gcpro gcpro1; | |
574c05e2 KK |
2666 | Lisp_Object args[8]; |
2667 | args[0] = fn; | |
2668 | args[1] = arg1; | |
2669 | args[2] = arg2; | |
2670 | args[3] = arg3; | |
2671 | args[4] = arg4; | |
2672 | args[5] = arg5; | |
2673 | args[6] = arg6; | |
2674 | args[7] = arg7; | |
2675 | GCPRO1 (args[0]); | |
2676 | gcpro1.nvars = 8; | |
2677 | RETURN_UNGCPRO (Ffuncall (8, args)); | |
574c05e2 KK |
2678 | } |
2679 | ||
6c2ef893 RS |
2680 | /* The caller should GCPRO all the elements of ARGS. */ |
2681 | ||
a7ca3326 | 2682 | DEFUN ("functionp", Ffunctionp, Sfunctionp, 1, 1, 0, |
7200d79c | 2683 | doc: /* Non-nil if OBJECT is a function. */) |
c566235d | 2684 | (Lisp_Object object) |
b9598260 | 2685 | { |
e1f29348 | 2686 | if (FUNCTIONP (object)) |
b9598260 | 2687 | return Qt; |
e1f29348 | 2688 | return Qnil; |
b9598260 SM |
2689 | } |
2690 | ||
a7ca3326 | 2691 | DEFUN ("funcall", Ffuncall, Sfuncall, 1, MANY, 0, |
9dbc9081 PJ |
2692 | doc: /* Call first argument as a function, passing remaining arguments to it. |
2693 | Return the value that function returns. | |
2694 | Thus, (funcall 'cons 'x 'y) returns (x . y). | |
2695 | usage: (funcall FUNCTION &rest ARGUMENTS) */) | |
f66c7cf8 | 2696 | (ptrdiff_t nargs, Lisp_Object *args) |
db9f0278 | 2697 | { |
8788120f | 2698 | Lisp_Object fun, original_fun; |
db9f0278 | 2699 | Lisp_Object funcar; |
f66c7cf8 | 2700 | ptrdiff_t numargs = nargs - 1; |
db9f0278 JB |
2701 | Lisp_Object lisp_numargs; |
2702 | Lisp_Object val; | |
2703 | struct backtrace backtrace; | |
2704 | register Lisp_Object *internal_args; | |
f66c7cf8 | 2705 | ptrdiff_t i; |
db9f0278 JB |
2706 | |
2707 | QUIT; | |
db9f0278 JB |
2708 | |
2709 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2710 | { | |
2711 | if (max_lisp_eval_depth < 100) | |
2712 | max_lisp_eval_depth = 100; | |
2713 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2714 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2715 | } |
2716 | ||
2717 | backtrace.next = backtrace_list; | |
e7c1b6ef | 2718 | backtrace.function = args[0]; |
7abaf5cc | 2719 | backtrace.args = &args[1]; /* This also GCPROs them. */ |
db9f0278 | 2720 | backtrace.nargs = nargs - 1; |
db9f0278 | 2721 | backtrace.debug_on_exit = 0; |
c2d7786e | 2722 | backtrace_list = &backtrace; |
db9f0278 | 2723 | |
7abaf5cc SM |
2724 | /* Call GC after setting up the backtrace, so the latter GCPROs the args. */ |
2725 | maybe_gc (); | |
2726 | ||
db9f0278 JB |
2727 | if (debug_on_next_call) |
2728 | do_debug_on_call (Qlambda); | |
2729 | ||
7e63e0c3 | 2730 | check_cons_list (); |
fff3ff9c | 2731 | |
8788120f KS |
2732 | original_fun = args[0]; |
2733 | ||
db9f0278 JB |
2734 | retry: |
2735 | ||
8788120f KS |
2736 | /* Optimize for no indirection. */ |
2737 | fun = original_fun; | |
2738 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
c644523b | 2739 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) |
8788120f | 2740 | fun = indirect_function (fun); |
db9f0278 | 2741 | |
90165123 | 2742 | if (SUBRP (fun)) |
db9f0278 | 2743 | { |
ef1b0ba7 | 2744 | if (numargs < XSUBR (fun)->min_args |
db9f0278 JB |
2745 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) |
2746 | { | |
a631e24c | 2747 | XSETFASTINT (lisp_numargs, numargs); |
734d55a2 | 2748 | xsignal2 (Qwrong_number_of_arguments, original_fun, lisp_numargs); |
db9f0278 JB |
2749 | } |
2750 | ||
ef1b0ba7 | 2751 | else if (XSUBR (fun)->max_args == UNEVALLED) |
734d55a2 | 2752 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2753 | |
ef1b0ba7 SM |
2754 | else if (XSUBR (fun)->max_args == MANY) |
2755 | val = (XSUBR (fun)->function.aMANY) (numargs, args + 1); | |
db9f0278 | 2756 | else |
db9f0278 | 2757 | { |
ef1b0ba7 SM |
2758 | if (XSUBR (fun)->max_args > numargs) |
2759 | { | |
38182d90 PE |
2760 | internal_args = alloca (XSUBR (fun)->max_args |
2761 | * sizeof *internal_args); | |
663e2b3f | 2762 | memcpy (internal_args, args + 1, numargs * word_size); |
ef1b0ba7 SM |
2763 | for (i = numargs; i < XSUBR (fun)->max_args; i++) |
2764 | internal_args[i] = Qnil; | |
2765 | } | |
2766 | else | |
2767 | internal_args = args + 1; | |
2768 | switch (XSUBR (fun)->max_args) | |
2769 | { | |
2770 | case 0: | |
2771 | val = (XSUBR (fun)->function.a0 ()); | |
2772 | break; | |
2773 | case 1: | |
2774 | val = (XSUBR (fun)->function.a1 (internal_args[0])); | |
2775 | break; | |
2776 | case 2: | |
2777 | val = (XSUBR (fun)->function.a2 | |
2778 | (internal_args[0], internal_args[1])); | |
2779 | break; | |
2780 | case 3: | |
2781 | val = (XSUBR (fun)->function.a3 | |
2782 | (internal_args[0], internal_args[1], internal_args[2])); | |
2783 | break; | |
2784 | case 4: | |
2785 | val = (XSUBR (fun)->function.a4 | |
2786 | (internal_args[0], internal_args[1], internal_args[2], | |
2787 | internal_args[3])); | |
2788 | break; | |
2789 | case 5: | |
2790 | val = (XSUBR (fun)->function.a5 | |
2791 | (internal_args[0], internal_args[1], internal_args[2], | |
2792 | internal_args[3], internal_args[4])); | |
2793 | break; | |
2794 | case 6: | |
2795 | val = (XSUBR (fun)->function.a6 | |
2796 | (internal_args[0], internal_args[1], internal_args[2], | |
2797 | internal_args[3], internal_args[4], internal_args[5])); | |
2798 | break; | |
2799 | case 7: | |
2800 | val = (XSUBR (fun)->function.a7 | |
2801 | (internal_args[0], internal_args[1], internal_args[2], | |
2802 | internal_args[3], internal_args[4], internal_args[5], | |
2803 | internal_args[6])); | |
2804 | break; | |
2805 | ||
2806 | case 8: | |
2807 | val = (XSUBR (fun)->function.a8 | |
2808 | (internal_args[0], internal_args[1], internal_args[2], | |
2809 | internal_args[3], internal_args[4], internal_args[5], | |
2810 | internal_args[6], internal_args[7])); | |
2811 | break; | |
2812 | ||
2813 | default: | |
2814 | ||
2815 | /* If a subr takes more than 8 arguments without using MANY | |
2816 | or UNEVALLED, we need to extend this function to support it. | |
2817 | Until this is done, there is no way to call the function. */ | |
1088b922 | 2818 | emacs_abort (); |
ef1b0ba7 | 2819 | } |
db9f0278 JB |
2820 | } |
2821 | } | |
ef1b0ba7 | 2822 | else if (COMPILEDP (fun)) |
db9f0278 JB |
2823 | val = funcall_lambda (fun, numargs, args + 1); |
2824 | else | |
2825 | { | |
8788120f | 2826 | if (EQ (fun, Qunbound)) |
734d55a2 | 2827 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 2828 | if (!CONSP (fun)) |
734d55a2 KS |
2829 | xsignal1 (Qinvalid_function, original_fun); |
2830 | funcar = XCAR (fun); | |
90165123 | 2831 | if (!SYMBOLP (funcar)) |
734d55a2 | 2832 | xsignal1 (Qinvalid_function, original_fun); |
defb1411 SM |
2833 | if (EQ (funcar, Qlambda) |
2834 | || EQ (funcar, Qclosure)) | |
db9f0278 | 2835 | val = funcall_lambda (fun, numargs, args + 1); |
db9f0278 JB |
2836 | else if (EQ (funcar, Qautoload)) |
2837 | { | |
7abaf5cc | 2838 | Fautoload_do_load (fun, original_fun, Qnil); |
7e63e0c3 | 2839 | check_cons_list (); |
db9f0278 JB |
2840 | goto retry; |
2841 | } | |
2842 | else | |
734d55a2 | 2843 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2844 | } |
7e63e0c3 | 2845 | check_cons_list (); |
db9f0278 JB |
2846 | lisp_eval_depth--; |
2847 | if (backtrace.debug_on_exit) | |
2848 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2849 | backtrace_list = backtrace.next; | |
2850 | return val; | |
2851 | } | |
2852 | \f | |
2f7c71a1 | 2853 | static Lisp_Object |
defb1411 | 2854 | apply_lambda (Lisp_Object fun, Lisp_Object args) |
db9f0278 JB |
2855 | { |
2856 | Lisp_Object args_left; | |
d311d28c PE |
2857 | ptrdiff_t i; |
2858 | EMACS_INT numargs; | |
db9f0278 JB |
2859 | register Lisp_Object *arg_vector; |
2860 | struct gcpro gcpro1, gcpro2, gcpro3; | |
db9f0278 | 2861 | register Lisp_Object tem; |
3a7a9129 | 2862 | USE_SAFE_ALLOCA; |
db9f0278 | 2863 | |
f66c7cf8 | 2864 | numargs = XFASTINT (Flength (args)); |
c5101a77 | 2865 | SAFE_ALLOCA_LISP (arg_vector, numargs); |
db9f0278 JB |
2866 | args_left = args; |
2867 | ||
2868 | GCPRO3 (*arg_vector, args_left, fun); | |
2869 | gcpro1.nvars = 0; | |
2870 | ||
c5101a77 | 2871 | for (i = 0; i < numargs; ) |
db9f0278 JB |
2872 | { |
2873 | tem = Fcar (args_left), args_left = Fcdr (args_left); | |
defb1411 | 2874 | tem = eval_sub (tem); |
db9f0278 JB |
2875 | arg_vector[i++] = tem; |
2876 | gcpro1.nvars = i; | |
2877 | } | |
2878 | ||
2879 | UNGCPRO; | |
2880 | ||
f07a954e SM |
2881 | backtrace_list->args = arg_vector; |
2882 | backtrace_list->nargs = i; | |
c5101a77 | 2883 | tem = funcall_lambda (fun, numargs, arg_vector); |
db9f0278 JB |
2884 | |
2885 | /* Do the debug-on-exit now, while arg_vector still exists. */ | |
2886 | if (backtrace_list->debug_on_exit) | |
2887 | tem = call_debugger (Fcons (Qexit, Fcons (tem, Qnil))); | |
2888 | /* Don't do it again when we return to eval. */ | |
2889 | backtrace_list->debug_on_exit = 0; | |
3a7a9129 | 2890 | SAFE_FREE (); |
db9f0278 JB |
2891 | return tem; |
2892 | } | |
2893 | ||
2894 | /* Apply a Lisp function FUN to the NARGS evaluated arguments in ARG_VECTOR | |
2895 | and return the result of evaluation. | |
2896 | FUN must be either a lambda-expression or a compiled-code object. */ | |
2897 | ||
2901f1d1 | 2898 | static Lisp_Object |
f66c7cf8 | 2899 | funcall_lambda (Lisp_Object fun, ptrdiff_t nargs, |
c5101a77 | 2900 | register Lisp_Object *arg_vector) |
db9f0278 | 2901 | { |
defb1411 | 2902 | Lisp_Object val, syms_left, next, lexenv; |
d311d28c | 2903 | ptrdiff_t count = SPECPDL_INDEX (); |
f66c7cf8 | 2904 | ptrdiff_t i; |
1882aa38 | 2905 | bool optional, rest; |
db9f0278 | 2906 | |
90165123 | 2907 | if (CONSP (fun)) |
9ab90667 | 2908 | { |
defb1411 SM |
2909 | if (EQ (XCAR (fun), Qclosure)) |
2910 | { | |
2911 | fun = XCDR (fun); /* Drop `closure'. */ | |
2912 | lexenv = XCAR (fun); | |
23aba0ea | 2913 | CHECK_LIST_CONS (fun, fun); |
defb1411 SM |
2914 | } |
2915 | else | |
2916 | lexenv = Qnil; | |
9ab90667 GM |
2917 | syms_left = XCDR (fun); |
2918 | if (CONSP (syms_left)) | |
2919 | syms_left = XCAR (syms_left); | |
2920 | else | |
734d55a2 | 2921 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 2922 | } |
90165123 | 2923 | else if (COMPILEDP (fun)) |
defb1411 | 2924 | { |
798cb644 SM |
2925 | syms_left = AREF (fun, COMPILED_ARGLIST); |
2926 | if (INTEGERP (syms_left)) | |
876c194c SM |
2927 | /* A byte-code object with a non-nil `push args' slot means we |
2928 | shouldn't bind any arguments, instead just call the byte-code | |
2929 | interpreter directly; it will push arguments as necessary. | |
2930 | ||
9173deec | 2931 | Byte-code objects with either a non-existent, or a nil value for |
876c194c SM |
2932 | the `push args' slot (the default), have dynamically-bound |
2933 | arguments, and use the argument-binding code below instead (as do | |
2934 | all interpreted functions, even lexically bound ones). */ | |
2935 | { | |
2936 | /* If we have not actually read the bytecode string | |
2937 | and constants vector yet, fetch them from the file. */ | |
2938 | if (CONSP (AREF (fun, COMPILED_BYTECODE))) | |
2939 | Ffetch_bytecode (fun); | |
2940 | return exec_byte_code (AREF (fun, COMPILED_BYTECODE), | |
2941 | AREF (fun, COMPILED_CONSTANTS), | |
2942 | AREF (fun, COMPILED_STACK_DEPTH), | |
798cb644 | 2943 | syms_left, |
876c194c SM |
2944 | nargs, arg_vector); |
2945 | } | |
defb1411 SM |
2946 | lexenv = Qnil; |
2947 | } | |
9ab90667 | 2948 | else |
1088b922 | 2949 | emacs_abort (); |
db9f0278 | 2950 | |
9ab90667 GM |
2951 | i = optional = rest = 0; |
2952 | for (; CONSP (syms_left); syms_left = XCDR (syms_left)) | |
db9f0278 JB |
2953 | { |
2954 | QUIT; | |
177c0ea7 | 2955 | |
9ab90667 | 2956 | next = XCAR (syms_left); |
8788120f | 2957 | if (!SYMBOLP (next)) |
734d55a2 | 2958 | xsignal1 (Qinvalid_function, fun); |
177c0ea7 | 2959 | |
db9f0278 JB |
2960 | if (EQ (next, Qand_rest)) |
2961 | rest = 1; | |
2962 | else if (EQ (next, Qand_optional)) | |
2963 | optional = 1; | |
db9f0278 | 2964 | else |
db9f0278 | 2965 | { |
e610eaca | 2966 | Lisp_Object arg; |
defb1411 SM |
2967 | if (rest) |
2968 | { | |
e610eaca | 2969 | arg = Flist (nargs - i, &arg_vector[i]); |
defb1411 SM |
2970 | i = nargs; |
2971 | } | |
2972 | else if (i < nargs) | |
e610eaca | 2973 | arg = arg_vector[i++]; |
b9598260 SM |
2974 | else if (!optional) |
2975 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); | |
2976 | else | |
e610eaca | 2977 | arg = Qnil; |
7200d79c | 2978 | |
b9598260 | 2979 | /* Bind the argument. */ |
876c194c | 2980 | if (!NILP (lexenv) && SYMBOLP (next)) |
b9598260 | 2981 | /* Lexically bind NEXT by adding it to the lexenv alist. */ |
e610eaca | 2982 | lexenv = Fcons (Fcons (next, arg), lexenv); |
b9598260 SM |
2983 | else |
2984 | /* Dynamically bind NEXT. */ | |
e610eaca | 2985 | specbind (next, arg); |
db9f0278 | 2986 | } |
db9f0278 JB |
2987 | } |
2988 | ||
9ab90667 | 2989 | if (!NILP (syms_left)) |
734d55a2 | 2990 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 2991 | else if (i < nargs) |
734d55a2 | 2992 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 | 2993 | |
b9598260 SM |
2994 | if (!EQ (lexenv, Vinternal_interpreter_environment)) |
2995 | /* Instantiate a new lexical environment. */ | |
2996 | specbind (Qinternal_interpreter_environment, lexenv); | |
2997 | ||
90165123 | 2998 | if (CONSP (fun)) |
9ab90667 | 2999 | val = Fprogn (XCDR (XCDR (fun))); |
db9f0278 | 3000 | else |
ca248607 RS |
3001 | { |
3002 | /* If we have not actually read the bytecode string | |
3003 | and constants vector yet, fetch them from the file. */ | |
845975f5 | 3004 | if (CONSP (AREF (fun, COMPILED_BYTECODE))) |
661c7d6e | 3005 | Ffetch_bytecode (fun); |
b9598260 SM |
3006 | val = exec_byte_code (AREF (fun, COMPILED_BYTECODE), |
3007 | AREF (fun, COMPILED_CONSTANTS), | |
3008 | AREF (fun, COMPILED_STACK_DEPTH), | |
3009 | Qnil, 0, 0); | |
ca248607 | 3010 | } |
177c0ea7 | 3011 | |
db9f0278 JB |
3012 | return unbind_to (count, val); |
3013 | } | |
661c7d6e KH |
3014 | |
3015 | DEFUN ("fetch-bytecode", Ffetch_bytecode, Sfetch_bytecode, | |
9dbc9081 PJ |
3016 | 1, 1, 0, |
3017 | doc: /* If byte-compiled OBJECT is lazy-loaded, fetch it now. */) | |
5842a27b | 3018 | (Lisp_Object object) |
661c7d6e KH |
3019 | { |
3020 | Lisp_Object tem; | |
3021 | ||
845975f5 | 3022 | if (COMPILEDP (object) && CONSP (AREF (object, COMPILED_BYTECODE))) |
661c7d6e | 3023 | { |
845975f5 | 3024 | tem = read_doc_string (AREF (object, COMPILED_BYTECODE)); |
5bbdb090 | 3025 | if (!CONSP (tem)) |
845975f5 SM |
3026 | { |
3027 | tem = AREF (object, COMPILED_BYTECODE); | |
3028 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
d5db4077 | 3029 | error ("Invalid byte code in %s", SDATA (XCAR (tem))); |
845975f5 SM |
3030 | else |
3031 | error ("Invalid byte code"); | |
3032 | } | |
3ae565b3 SM |
3033 | ASET (object, COMPILED_BYTECODE, XCAR (tem)); |
3034 | ASET (object, COMPILED_CONSTANTS, XCDR (tem)); | |
661c7d6e KH |
3035 | } |
3036 | return object; | |
3037 | } | |
db9f0278 | 3038 | \f |
475545b5 | 3039 | static void |
d3da34e0 | 3040 | grow_specpdl (void) |
db9f0278 | 3041 | { |
d311d28c PE |
3042 | register ptrdiff_t count = SPECPDL_INDEX (); |
3043 | ptrdiff_t max_size = min (max_specpdl_size, PTRDIFF_MAX); | |
98e8eae1 | 3044 | if (max_size <= specpdl_size) |
db9f0278 JB |
3045 | { |
3046 | if (max_specpdl_size < 400) | |
98e8eae1 PE |
3047 | max_size = max_specpdl_size = 400; |
3048 | if (max_size <= specpdl_size) | |
734d55a2 | 3049 | signal_error ("Variable binding depth exceeds max-specpdl-size", Qnil); |
db9f0278 | 3050 | } |
d311d28c | 3051 | specpdl = xpalloc (specpdl, &specpdl_size, 1, max_size, sizeof *specpdl); |
db9f0278 JB |
3052 | specpdl_ptr = specpdl + count; |
3053 | } | |
3054 | ||
f6d62986 | 3055 | /* `specpdl_ptr->symbol' is a field which describes which variable is |
4e2db1fe SM |
3056 | let-bound, so it can be properly undone when we unbind_to. |
3057 | It can have the following two shapes: | |
3058 | - SYMBOL : if it's a plain symbol, it means that we have let-bound | |
3059 | a symbol that is not buffer-local (at least at the time | |
3060 | the let binding started). Note also that it should not be | |
3061 | aliased (i.e. when let-binding V1 that's aliased to V2, we want | |
3062 | to record V2 here). | |
3063 | - (SYMBOL WHERE . BUFFER) : this means that it is a let-binding for | |
3064 | variable SYMBOL which can be buffer-local. WHERE tells us | |
3065 | which buffer is affected (or nil if the let-binding affects the | |
3066 | global value of the variable) and BUFFER tells us which buffer was | |
3067 | current (i.e. if WHERE is non-nil, then BUFFER==WHERE, otherwise | |
3068 | BUFFER did not yet have a buffer-local value). */ | |
3069 | ||
db9f0278 | 3070 | void |
d3da34e0 | 3071 | specbind (Lisp_Object symbol, Lisp_Object value) |
db9f0278 | 3072 | { |
ce5b453a SM |
3073 | struct Lisp_Symbol *sym; |
3074 | ||
b7826503 | 3075 | CHECK_SYMBOL (symbol); |
ce5b453a | 3076 | sym = XSYMBOL (symbol); |
db9f0278 JB |
3077 | if (specpdl_ptr == specpdl + specpdl_size) |
3078 | grow_specpdl (); | |
719177b3 | 3079 | |
ce5b453a SM |
3080 | start: |
3081 | switch (sym->redirect) | |
719177b3 | 3082 | { |
ce5b453a SM |
3083 | case SYMBOL_VARALIAS: |
3084 | sym = indirect_variable (sym); XSETSYMBOL (symbol, sym); goto start; | |
3085 | case SYMBOL_PLAINVAL: | |
bb8e180f AS |
3086 | /* The most common case is that of a non-constant symbol with a |
3087 | trivial value. Make that as fast as we can. */ | |
e46f2325 DA |
3088 | set_specpdl_symbol (symbol); |
3089 | set_specpdl_old_value (SYMBOL_VAL (sym)); | |
bb8e180f AS |
3090 | specpdl_ptr->func = NULL; |
3091 | ++specpdl_ptr; | |
3092 | if (!sym->constant) | |
3093 | SET_SYMBOL_VAL (sym, value); | |
3094 | else | |
3095 | set_internal (symbol, value, Qnil, 1); | |
3096 | break; | |
4e2db1fe SM |
3097 | case SYMBOL_LOCALIZED: |
3098 | if (SYMBOL_BLV (sym)->frame_local) | |
3099 | error ("Frame-local vars cannot be let-bound"); | |
3100 | case SYMBOL_FORWARDED: | |
ce5b453a SM |
3101 | { |
3102 | Lisp_Object ovalue = find_symbol_value (symbol); | |
3103 | specpdl_ptr->func = 0; | |
e46f2325 | 3104 | set_specpdl_old_value (ovalue); |
ce5b453a SM |
3105 | |
3106 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3107 | || (EQ (SYMBOL_BLV (sym)->where, | |
3108 | SYMBOL_BLV (sym)->frame_local ? | |
3109 | Fselected_frame () : Fcurrent_buffer ()))); | |
3110 | ||
3111 | if (sym->redirect == SYMBOL_LOCALIZED | |
3112 | || BUFFER_OBJFWDP (SYMBOL_FWD (sym))) | |
3113 | { | |
3114 | Lisp_Object where, cur_buf = Fcurrent_buffer (); | |
3115 | ||
3116 | /* For a local variable, record both the symbol and which | |
3117 | buffer's or frame's value we are saving. */ | |
3118 | if (!NILP (Flocal_variable_p (symbol, Qnil))) | |
3119 | { | |
3120 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
a04e2c62 | 3121 | || (blv_found (SYMBOL_BLV (sym)) |
ce5b453a SM |
3122 | && EQ (cur_buf, SYMBOL_BLV (sym)->where))); |
3123 | where = cur_buf; | |
3124 | } | |
3125 | else if (sym->redirect == SYMBOL_LOCALIZED | |
a04e2c62 | 3126 | && blv_found (SYMBOL_BLV (sym))) |
ce5b453a SM |
3127 | where = SYMBOL_BLV (sym)->where; |
3128 | else | |
3129 | where = Qnil; | |
3130 | ||
3131 | /* We're not using the `unused' slot in the specbinding | |
3132 | structure because this would mean we have to do more | |
3133 | work for simple variables. */ | |
3134 | /* FIXME: The third value `current_buffer' is only used in | |
3135 | let_shadows_buffer_binding_p which is itself only used | |
3136 | in set_internal for local_if_set. */ | |
4e2db1fe | 3137 | eassert (NILP (where) || EQ (where, cur_buf)); |
e46f2325 | 3138 | set_specpdl_symbol (Fcons (symbol, Fcons (where, cur_buf))); |
ce5b453a SM |
3139 | |
3140 | /* If SYMBOL is a per-buffer variable which doesn't have a | |
3141 | buffer-local value here, make the `let' change the global | |
3142 | value by changing the value of SYMBOL in all buffers not | |
3143 | having their own value. This is consistent with what | |
3144 | happens with other buffer-local variables. */ | |
3145 | if (NILP (where) | |
3146 | && sym->redirect == SYMBOL_FORWARDED) | |
3147 | { | |
3148 | eassert (BUFFER_OBJFWDP (SYMBOL_FWD (sym))); | |
3149 | ++specpdl_ptr; | |
3150 | Fset_default (symbol, value); | |
3151 | return; | |
3152 | } | |
3153 | } | |
3154 | else | |
e46f2325 | 3155 | set_specpdl_symbol (symbol); |
ce5b453a SM |
3156 | |
3157 | specpdl_ptr++; | |
94b612ad | 3158 | set_internal (symbol, value, Qnil, 1); |
ce5b453a SM |
3159 | break; |
3160 | } | |
1088b922 | 3161 | default: emacs_abort (); |
9ab90667 | 3162 | } |
db9f0278 JB |
3163 | } |
3164 | ||
3165 | void | |
d3da34e0 | 3166 | record_unwind_protect (Lisp_Object (*function) (Lisp_Object), Lisp_Object arg) |
db9f0278 JB |
3167 | { |
3168 | if (specpdl_ptr == specpdl + specpdl_size) | |
3169 | grow_specpdl (); | |
3170 | specpdl_ptr->func = function; | |
e46f2325 DA |
3171 | set_specpdl_symbol (Qnil); |
3172 | set_specpdl_old_value (arg); | |
db9f0278 JB |
3173 | specpdl_ptr++; |
3174 | } | |
3175 | ||
3176 | Lisp_Object | |
d311d28c | 3177 | unbind_to (ptrdiff_t count, Lisp_Object value) |
db9f0278 | 3178 | { |
5a073f50 KS |
3179 | Lisp_Object quitf = Vquit_flag; |
3180 | struct gcpro gcpro1, gcpro2; | |
db9f0278 | 3181 | |
5a073f50 | 3182 | GCPRO2 (value, quitf); |
db9f0278 JB |
3183 | Vquit_flag = Qnil; |
3184 | ||
3185 | while (specpdl_ptr != specpdl + count) | |
3186 | { | |
611a8f8c RS |
3187 | /* Copy the binding, and decrement specpdl_ptr, before we do |
3188 | the work to unbind it. We decrement first | |
3189 | so that an error in unbinding won't try to unbind | |
3190 | the same entry again, and we copy the binding first | |
3191 | in case more bindings are made during some of the code we run. */ | |
eb700b82 | 3192 | |
45f266dc DL |
3193 | struct specbinding this_binding; |
3194 | this_binding = *--specpdl_ptr; | |
611a8f8c RS |
3195 | |
3196 | if (this_binding.func != 0) | |
3197 | (*this_binding.func) (this_binding.old_value); | |
0967b4b0 GM |
3198 | /* If the symbol is a list, it is really (SYMBOL WHERE |
3199 | . CURRENT-BUFFER) where WHERE is either nil, a buffer, or a | |
3200 | frame. If WHERE is a buffer or frame, this indicates we | |
1b1acc13 PJ |
3201 | bound a variable that had a buffer-local or frame-local |
3202 | binding. WHERE nil means that the variable had the default | |
0967b4b0 | 3203 | value when it was bound. CURRENT-BUFFER is the buffer that |
bb8e180f | 3204 | was current when the variable was bound. */ |
611a8f8c | 3205 | else if (CONSP (this_binding.symbol)) |
719177b3 | 3206 | { |
eb700b82 | 3207 | Lisp_Object symbol, where; |
719177b3 | 3208 | |
611a8f8c RS |
3209 | symbol = XCAR (this_binding.symbol); |
3210 | where = XCAR (XCDR (this_binding.symbol)); | |
719177b3 | 3211 | |
eb700b82 | 3212 | if (NILP (where)) |
611a8f8c | 3213 | Fset_default (symbol, this_binding.old_value); |
94b612ad SM |
3214 | /* If `where' is non-nil, reset the value in the appropriate |
3215 | local binding, but only if that binding still exists. */ | |
4e2db1fe SM |
3216 | else if (BUFFERP (where) |
3217 | ? !NILP (Flocal_variable_p (symbol, where)) | |
e69b0960 | 3218 | : !NILP (Fassq (symbol, XFRAME (where)->param_alist))) |
4e2db1fe | 3219 | set_internal (symbol, this_binding.old_value, where, 1); |
719177b3 | 3220 | } |
94b612ad SM |
3221 | /* If variable has a trivial value (no forwarding), we can |
3222 | just set it. No need to check for constant symbols here, | |
3223 | since that was already done by specbind. */ | |
3224 | else if (XSYMBOL (this_binding.symbol)->redirect == SYMBOL_PLAINVAL) | |
3225 | SET_SYMBOL_VAL (XSYMBOL (this_binding.symbol), | |
3226 | this_binding.old_value); | |
db9f0278 | 3227 | else |
94b612ad SM |
3228 | /* NOTE: we only ever come here if make_local_foo was used for |
3229 | the first time on this var within this let. */ | |
3230 | Fset_default (this_binding.symbol, this_binding.old_value); | |
db9f0278 | 3231 | } |
177c0ea7 | 3232 | |
5a073f50 KS |
3233 | if (NILP (Vquit_flag) && !NILP (quitf)) |
3234 | Vquit_flag = quitf; | |
db9f0278 JB |
3235 | |
3236 | UNGCPRO; | |
db9f0278 JB |
3237 | return value; |
3238 | } | |
b9598260 | 3239 | |
4a330052 | 3240 | DEFUN ("special-variable-p", Fspecial_variable_p, Sspecial_variable_p, 1, 1, 0, |
b9598260 SM |
3241 | doc: /* Return non-nil if SYMBOL's global binding has been declared special. |
3242 | A special variable is one that will be bound dynamically, even in a | |
3243 | context where binding is lexical by default. */) | |
c566235d | 3244 | (Lisp_Object symbol) |
b9598260 SM |
3245 | { |
3246 | CHECK_SYMBOL (symbol); | |
3247 | return XSYMBOL (symbol)->declared_special ? Qt : Qnil; | |
3248 | } | |
3249 | ||
db9f0278 | 3250 | \f |
db9f0278 | 3251 | DEFUN ("backtrace-debug", Fbacktrace_debug, Sbacktrace_debug, 2, 2, 0, |
9dbc9081 PJ |
3252 | doc: /* Set the debug-on-exit flag of eval frame LEVEL levels down to FLAG. |
3253 | The debugger is entered when that frame exits, if the flag is non-nil. */) | |
5842a27b | 3254 | (Lisp_Object level, Lisp_Object flag) |
db9f0278 JB |
3255 | { |
3256 | register struct backtrace *backlist = backtrace_list; | |
d311d28c | 3257 | register EMACS_INT i; |
db9f0278 | 3258 | |
b7826503 | 3259 | CHECK_NUMBER (level); |
db9f0278 JB |
3260 | |
3261 | for (i = 0; backlist && i < XINT (level); i++) | |
3262 | { | |
3263 | backlist = backlist->next; | |
3264 | } | |
3265 | ||
3266 | if (backlist) | |
265a9e55 | 3267 | backlist->debug_on_exit = !NILP (flag); |
db9f0278 JB |
3268 | |
3269 | return flag; | |
3270 | } | |
3271 | ||
3272 | DEFUN ("backtrace", Fbacktrace, Sbacktrace, 0, 0, "", | |
9dbc9081 PJ |
3273 | doc: /* Print a trace of Lisp function calls currently active. |
3274 | Output stream used is value of `standard-output'. */) | |
5842a27b | 3275 | (void) |
db9f0278 JB |
3276 | { |
3277 | register struct backtrace *backlist = backtrace_list; | |
db9f0278 JB |
3278 | Lisp_Object tail; |
3279 | Lisp_Object tem; | |
db9f0278 | 3280 | struct gcpro gcpro1; |
d4b6d95d | 3281 | Lisp_Object old_print_level = Vprint_level; |
db9f0278 | 3282 | |
d4b6d95d LMI |
3283 | if (NILP (Vprint_level)) |
3284 | XSETFASTINT (Vprint_level, 8); | |
db9f0278 JB |
3285 | |
3286 | tail = Qnil; | |
3287 | GCPRO1 (tail); | |
3288 | ||
3289 | while (backlist) | |
3290 | { | |
3291 | write_string (backlist->debug_on_exit ? "* " : " ", 2); | |
44f230aa | 3292 | if (backlist->nargs == UNEVALLED) |
db9f0278 | 3293 | { |
e7c1b6ef | 3294 | Fprin1 (Fcons (backlist->function, *backlist->args), Qnil); |
b6703b02 | 3295 | write_string ("\n", -1); |
db9f0278 JB |
3296 | } |
3297 | else | |
3298 | { | |
e7c1b6ef | 3299 | tem = backlist->function; |
f6d62986 | 3300 | Fprin1 (tem, Qnil); /* This can QUIT. */ |
db9f0278 | 3301 | write_string ("(", -1); |
44f230aa SM |
3302 | if (backlist->nargs == MANY) |
3303 | { /* FIXME: Can this happen? */ | |
1882aa38 PE |
3304 | bool later_arg = 0; |
3305 | for (tail = *backlist->args; !NILP (tail); tail = Fcdr (tail)) | |
db9f0278 | 3306 | { |
1882aa38 PE |
3307 | if (later_arg) |
3308 | write_string (" ", -1); | |
db9f0278 | 3309 | Fprin1 (Fcar (tail), Qnil); |
1882aa38 | 3310 | later_arg = 1; |
db9f0278 JB |
3311 | } |
3312 | } | |
3313 | else | |
3314 | { | |
f66c7cf8 | 3315 | ptrdiff_t i; |
db9f0278 JB |
3316 | for (i = 0; i < backlist->nargs; i++) |
3317 | { | |
3318 | if (i) write_string (" ", -1); | |
3319 | Fprin1 (backlist->args[i], Qnil); | |
3320 | } | |
3321 | } | |
b6703b02 | 3322 | write_string (")\n", -1); |
db9f0278 | 3323 | } |
db9f0278 JB |
3324 | backlist = backlist->next; |
3325 | } | |
3326 | ||
d4b6d95d | 3327 | Vprint_level = old_print_level; |
db9f0278 JB |
3328 | UNGCPRO; |
3329 | return Qnil; | |
3330 | } | |
3331 | ||
17401c97 | 3332 | DEFUN ("backtrace-frame", Fbacktrace_frame, Sbacktrace_frame, 1, 1, NULL, |
9dbc9081 PJ |
3333 | doc: /* Return the function and arguments NFRAMES up from current execution point. |
3334 | If that frame has not evaluated the arguments yet (or is a special form), | |
3335 | the value is (nil FUNCTION ARG-FORMS...). | |
3336 | If that frame has evaluated its arguments and called its function already, | |
3337 | the value is (t FUNCTION ARG-VALUES...). | |
3338 | A &rest arg is represented as the tail of the list ARG-VALUES. | |
3339 | FUNCTION is whatever was supplied as car of evaluated list, | |
3340 | or a lambda expression for macro calls. | |
3341 | If NFRAMES is more than the number of frames, the value is nil. */) | |
5842a27b | 3342 | (Lisp_Object nframes) |
db9f0278 JB |
3343 | { |
3344 | register struct backtrace *backlist = backtrace_list; | |
5d5d959d | 3345 | register EMACS_INT i; |
db9f0278 JB |
3346 | Lisp_Object tem; |
3347 | ||
b7826503 | 3348 | CHECK_NATNUM (nframes); |
db9f0278 JB |
3349 | |
3350 | /* Find the frame requested. */ | |
b6703b02 | 3351 | for (i = 0; backlist && i < XFASTINT (nframes); i++) |
db9f0278 JB |
3352 | backlist = backlist->next; |
3353 | ||
3354 | if (!backlist) | |
3355 | return Qnil; | |
44f230aa | 3356 | if (backlist->nargs == UNEVALLED) |
e7c1b6ef | 3357 | return Fcons (Qnil, Fcons (backlist->function, *backlist->args)); |
db9f0278 JB |
3358 | else |
3359 | { | |
44f230aa | 3360 | if (backlist->nargs == MANY) /* FIXME: Can this happen? */ |
db9f0278 JB |
3361 | tem = *backlist->args; |
3362 | else | |
3363 | tem = Flist (backlist->nargs, backlist->args); | |
3364 | ||
e7c1b6ef | 3365 | return Fcons (Qt, Fcons (backlist->function, tem)); |
db9f0278 JB |
3366 | } |
3367 | } | |
a2ff3819 | 3368 | |
db9f0278 | 3369 | \f |
244ed907 | 3370 | #if BYTE_MARK_STACK |
4ce0541e | 3371 | void |
d3da34e0 | 3372 | mark_backtrace (void) |
4ce0541e SM |
3373 | { |
3374 | register struct backtrace *backlist; | |
f66c7cf8 | 3375 | ptrdiff_t i; |
4ce0541e SM |
3376 | |
3377 | for (backlist = backtrace_list; backlist; backlist = backlist->next) | |
3378 | { | |
3379 | mark_object (*backlist->function); | |
3380 | ||
44f230aa SM |
3381 | if (backlist->nargs == UNEVALLED |
3382 | || backlist->nargs == MANY) /* FIXME: Can this happen? */ | |
c5101a77 | 3383 | i = 1; |
4ce0541e | 3384 | else |
c5101a77 PE |
3385 | i = backlist->nargs; |
3386 | while (i--) | |
4ce0541e SM |
3387 | mark_object (backlist->args[i]); |
3388 | } | |
3389 | } | |
244ed907 | 3390 | #endif |
4ce0541e | 3391 | |
dfcf069d | 3392 | void |
d3da34e0 | 3393 | syms_of_eval (void) |
db9f0278 | 3394 | { |
29208e82 | 3395 | DEFVAR_INT ("max-specpdl-size", max_specpdl_size, |
fb7ada5f | 3396 | doc: /* Limit on number of Lisp variable bindings and `unwind-protect's. |
9f5903bb | 3397 | If Lisp code tries to increase the total number past this amount, |
2520dc0c RS |
3398 | an error is signaled. |
3399 | You can safely use a value considerably larger than the default value, | |
3400 | if that proves inconveniently small. However, if you increase it too far, | |
3401 | Emacs could run out of memory trying to make the stack bigger. */); | |
db9f0278 | 3402 | |
29208e82 | 3403 | DEFVAR_INT ("max-lisp-eval-depth", max_lisp_eval_depth, |
fb7ada5f | 3404 | doc: /* Limit on depth in `eval', `apply' and `funcall' before error. |
2520dc0c RS |
3405 | |
3406 | This limit serves to catch infinite recursions for you before they cause | |
9dbc9081 PJ |
3407 | actual stack overflow in C, which would be fatal for Emacs. |
3408 | You can safely make it considerably larger than its default value, | |
2520dc0c RS |
3409 | if that proves inconveniently small. However, if you increase it too far, |
3410 | Emacs could overflow the real C stack, and crash. */); | |
db9f0278 | 3411 | |
29208e82 | 3412 | DEFVAR_LISP ("quit-flag", Vquit_flag, |
9dbc9081 | 3413 | doc: /* Non-nil causes `eval' to abort, unless `inhibit-quit' is non-nil. |
42ed718e RS |
3414 | If the value is t, that means do an ordinary quit. |
3415 | If the value equals `throw-on-input', that means quit by throwing | |
3416 | to the tag specified in `throw-on-input'; it's for handling `while-no-input'. | |
3417 | Typing C-g sets `quit-flag' to t, regardless of `inhibit-quit', | |
3418 | but `inhibit-quit' non-nil prevents anything from taking notice of that. */); | |
db9f0278 JB |
3419 | Vquit_flag = Qnil; |
3420 | ||
29208e82 | 3421 | DEFVAR_LISP ("inhibit-quit", Vinhibit_quit, |
9dbc9081 PJ |
3422 | doc: /* Non-nil inhibits C-g quitting from happening immediately. |
3423 | Note that `quit-flag' will still be set by typing C-g, | |
3424 | so a quit will be signaled as soon as `inhibit-quit' is nil. | |
3425 | To prevent this happening, set `quit-flag' to nil | |
3426 | before making `inhibit-quit' nil. */); | |
db9f0278 JB |
3427 | Vinhibit_quit = Qnil; |
3428 | ||
cd3520a4 JB |
3429 | DEFSYM (Qinhibit_quit, "inhibit-quit"); |
3430 | DEFSYM (Qautoload, "autoload"); | |
45b82ad0 | 3431 | DEFSYM (Qinhibit_debugger, "inhibit-debugger"); |
cd3520a4 JB |
3432 | DEFSYM (Qmacro, "macro"); |
3433 | DEFSYM (Qdeclare, "declare"); | |
177c0ea7 | 3434 | |
db9f0278 JB |
3435 | /* Note that the process handling also uses Qexit, but we don't want |
3436 | to staticpro it twice, so we just do it here. */ | |
cd3520a4 | 3437 | DEFSYM (Qexit, "exit"); |
b9598260 | 3438 | |
cd3520a4 JB |
3439 | DEFSYM (Qinteractive, "interactive"); |
3440 | DEFSYM (Qcommandp, "commandp"); | |
cd3520a4 JB |
3441 | DEFSYM (Qand_rest, "&rest"); |
3442 | DEFSYM (Qand_optional, "&optional"); | |
3443 | DEFSYM (Qclosure, "closure"); | |
3444 | DEFSYM (Qdebug, "debug"); | |
f01cbfdd | 3445 | |
45b82ad0 SM |
3446 | DEFVAR_LISP ("inhibit-debugger", Vinhibit_debugger, |
3447 | doc: /* Non-nil means never enter the debugger. | |
3448 | Normally set while the debugger is already active, to avoid recursive | |
3449 | invocations. */); | |
3450 | Vinhibit_debugger = Qnil; | |
3451 | ||
29208e82 | 3452 | DEFVAR_LISP ("debug-on-error", Vdebug_on_error, |
fb7ada5f | 3453 | doc: /* Non-nil means enter debugger if an error is signaled. |
9dbc9081 PJ |
3454 | Does not apply to errors handled by `condition-case' or those |
3455 | matched by `debug-ignored-errors'. | |
3456 | If the value is a list, an error only means to enter the debugger | |
3457 | if one of its condition symbols appears in the list. | |
3458 | When you evaluate an expression interactively, this variable | |
3459 | is temporarily non-nil if `eval-expression-debug-on-error' is non-nil. | |
fbbdcf2f | 3460 | The command `toggle-debug-on-error' toggles this. |
45b82ad0 | 3461 | See also the variable `debug-on-quit' and `inhibit-debugger'. */); |
128c0f66 | 3462 | Vdebug_on_error = Qnil; |
db9f0278 | 3463 | |
29208e82 | 3464 | DEFVAR_LISP ("debug-ignored-errors", Vdebug_ignored_errors, |
fb7ada5f | 3465 | doc: /* List of errors for which the debugger should not be called. |
9dbc9081 PJ |
3466 | Each element may be a condition-name or a regexp that matches error messages. |
3467 | If any element applies to a given error, that error skips the debugger | |
3468 | and just returns to top level. | |
3469 | This overrides the variable `debug-on-error'. | |
3470 | It does not apply to errors handled by `condition-case'. */); | |
fc950e09 KH |
3471 | Vdebug_ignored_errors = Qnil; |
3472 | ||
29208e82 | 3473 | DEFVAR_BOOL ("debug-on-quit", debug_on_quit, |
fb7ada5f | 3474 | doc: /* Non-nil means enter debugger if quit is signaled (C-g, for example). |
82fc29a1 | 3475 | Does not apply if quit is handled by a `condition-case'. */); |
db9f0278 JB |
3476 | debug_on_quit = 0; |
3477 | ||
29208e82 | 3478 | DEFVAR_BOOL ("debug-on-next-call", debug_on_next_call, |
9dbc9081 | 3479 | doc: /* Non-nil means enter debugger before next `eval', `apply' or `funcall'. */); |
db9f0278 | 3480 | |
29208e82 | 3481 | DEFVAR_BOOL ("debugger-may-continue", debugger_may_continue, |
9dbc9081 PJ |
3482 | doc: /* Non-nil means debugger may continue execution. |
3483 | This is nil when the debugger is called under circumstances where it | |
3484 | might not be safe to continue. */); | |
dac204bc | 3485 | debugger_may_continue = 1; |
556d7314 | 3486 | |
29208e82 | 3487 | DEFVAR_LISP ("debugger", Vdebugger, |
9dbc9081 PJ |
3488 | doc: /* Function to call to invoke debugger. |
3489 | If due to frame exit, args are `exit' and the value being returned; | |
3490 | this function's value will be returned instead of that. | |
3491 | If due to error, args are `error' and a list of the args to `signal'. | |
3492 | If due to `apply' or `funcall' entry, one arg, `lambda'. | |
3493 | If due to `eval' entry, one arg, t. */); | |
db9f0278 JB |
3494 | Vdebugger = Qnil; |
3495 | ||
29208e82 | 3496 | DEFVAR_LISP ("signal-hook-function", Vsignal_hook_function, |
9dbc9081 PJ |
3497 | doc: /* If non-nil, this is a function for `signal' to call. |
3498 | It receives the same arguments that `signal' was given. | |
3499 | The Edebug package uses this to regain control. */); | |
61ede770 RS |
3500 | Vsignal_hook_function = Qnil; |
3501 | ||
29208e82 | 3502 | DEFVAR_LISP ("debug-on-signal", Vdebug_on_signal, |
fb7ada5f | 3503 | doc: /* Non-nil means call the debugger regardless of condition handlers. |
9dbc9081 PJ |
3504 | Note that `debug-on-error', `debug-on-quit' and friends |
3505 | still determine whether to handle the particular condition. */); | |
57a6e758 | 3506 | Vdebug_on_signal = Qnil; |
61ede770 | 3507 | |
b38b1ec0 | 3508 | /* When lexical binding is being used, |
61b108cc | 3509 | Vinternal_interpreter_environment is non-nil, and contains an alist |
b38b1ec0 SM |
3510 | of lexically-bound variable, or (t), indicating an empty |
3511 | environment. The lisp name of this variable would be | |
3512 | `internal-interpreter-environment' if it weren't hidden. | |
3513 | Every element of this list can be either a cons (VAR . VAL) | |
3514 | specifying a lexical binding, or a single symbol VAR indicating | |
3515 | that this variable should use dynamic scoping. */ | |
61b108cc SM |
3516 | DEFSYM (Qinternal_interpreter_environment, |
3517 | "internal-interpreter-environment"); | |
b38b1ec0 SM |
3518 | DEFVAR_LISP ("internal-interpreter-environment", |
3519 | Vinternal_interpreter_environment, | |
b9598260 SM |
3520 | doc: /* If non-nil, the current lexical environment of the lisp interpreter. |
3521 | When lexical binding is not being used, this variable is nil. | |
3522 | A value of `(t)' indicates an empty environment, otherwise it is an | |
3523 | alist of active lexical bindings. */); | |
3524 | Vinternal_interpreter_environment = Qnil; | |
c80e3b4a | 3525 | /* Don't export this variable to Elisp, so no one can mess with it |
b38b1ec0 SM |
3526 | (Just imagine if someone makes it buffer-local). */ |
3527 | Funintern (Qinternal_interpreter_environment, Qnil); | |
b9598260 | 3528 | |
cd3520a4 | 3529 | DEFSYM (Vrun_hooks, "run-hooks"); |
db9f0278 JB |
3530 | |
3531 | staticpro (&Vautoload_queue); | |
3532 | Vautoload_queue = Qnil; | |
a2ff3819 GM |
3533 | staticpro (&Vsignaling_function); |
3534 | Vsignaling_function = Qnil; | |
db9f0278 | 3535 | |
d1f55f16 CY |
3536 | inhibit_lisp_code = Qnil; |
3537 | ||
db9f0278 JB |
3538 | defsubr (&Sor); |
3539 | defsubr (&Sand); | |
3540 | defsubr (&Sif); | |
3541 | defsubr (&Scond); | |
3542 | defsubr (&Sprogn); | |
3543 | defsubr (&Sprog1); | |
3544 | defsubr (&Sprog2); | |
3545 | defsubr (&Ssetq); | |
3546 | defsubr (&Squote); | |
3547 | defsubr (&Sfunction); | |
db9f0278 | 3548 | defsubr (&Sdefvar); |
19cebf5a | 3549 | defsubr (&Sdefvaralias); |
db9f0278 | 3550 | defsubr (&Sdefconst); |
513749ee | 3551 | defsubr (&Smake_var_non_special); |
db9f0278 JB |
3552 | defsubr (&Slet); |
3553 | defsubr (&SletX); | |
3554 | defsubr (&Swhile); | |
3555 | defsubr (&Smacroexpand); | |
3556 | defsubr (&Scatch); | |
3557 | defsubr (&Sthrow); | |
3558 | defsubr (&Sunwind_protect); | |
3559 | defsubr (&Scondition_case); | |
3560 | defsubr (&Ssignal); | |
3561 | defsubr (&Sinteractive_p); | |
4b664e76 | 3562 | defsubr (&Scalled_interactively_p); |
db9f0278 JB |
3563 | defsubr (&Scommandp); |
3564 | defsubr (&Sautoload); | |
7abaf5cc | 3565 | defsubr (&Sautoload_do_load); |
db9f0278 JB |
3566 | defsubr (&Seval); |
3567 | defsubr (&Sapply); | |
3568 | defsubr (&Sfuncall); | |
ff936e53 SM |
3569 | defsubr (&Srun_hooks); |
3570 | defsubr (&Srun_hook_with_args); | |
3571 | defsubr (&Srun_hook_with_args_until_success); | |
3572 | defsubr (&Srun_hook_with_args_until_failure); | |
f6d62986 | 3573 | defsubr (&Srun_hook_wrapped); |
661c7d6e | 3574 | defsubr (&Sfetch_bytecode); |
db9f0278 JB |
3575 | defsubr (&Sbacktrace_debug); |
3576 | defsubr (&Sbacktrace); | |
3577 | defsubr (&Sbacktrace_frame); | |
4a330052 | 3578 | defsubr (&Sspecial_variable_p); |
b9598260 | 3579 | defsubr (&Sfunctionp); |
db9f0278 | 3580 | } |