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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 | ||
db9f0278 | 34 | struct backtrace |
4c576a83 GM |
35 | { |
36 | struct backtrace *next; | |
37 | Lisp_Object *function; | |
f6d62986 | 38 | Lisp_Object *args; /* Points to vector of args. */ |
bbc6b304 | 39 | ptrdiff_t nargs; /* Length of vector. */ |
f6d62986 | 40 | /* Nonzero means call value of debugger when done with this operation. */ |
bbc6b304 | 41 | unsigned int debug_on_exit : 1; |
4c576a83 | 42 | }; |
db9f0278 | 43 | |
57a96f5c | 44 | static struct backtrace *backtrace_list; |
244ed907 PE |
45 | |
46 | #if !BYTE_MARK_STACK | |
47 | static | |
48 | #endif | |
db9f0278 JB |
49 | struct catchtag *catchlist; |
50 | ||
244ed907 PE |
51 | /* Chain of condition handlers currently in effect. |
52 | The elements of this chain are contained in the stack frames | |
53 | of Fcondition_case and internal_condition_case. | |
54 | When an error is signaled (by calling Fsignal, below), | |
55 | this chain is searched for an element that applies. */ | |
56 | ||
57 | #if !BYTE_MARK_STACK | |
58 | static | |
59 | #endif | |
60 | struct handler *handlerlist; | |
61 | ||
15934ffa RS |
62 | #ifdef DEBUG_GCPRO |
63 | /* Count levels of GCPRO to detect failure to UNGCPRO. */ | |
64 | int gcpro_level; | |
65 | #endif | |
66 | ||
61b108cc | 67 | Lisp_Object Qautoload, Qmacro, Qexit, Qinteractive, Qcommandp; |
29208e82 | 68 | Lisp_Object Qinhibit_quit; |
955cbe7b PE |
69 | Lisp_Object Qand_rest; |
70 | static Lisp_Object Qand_optional; | |
45b82ad0 | 71 | static Lisp_Object Qinhibit_debugger; |
955cbe7b | 72 | static Lisp_Object Qdeclare; |
b9598260 SM |
73 | Lisp_Object Qinternal_interpreter_environment, Qclosure; |
74 | ||
ed008a6d | 75 | static Lisp_Object Qdebug; |
db9f0278 | 76 | |
6e6e9f08 RS |
77 | /* This holds either the symbol `run-hooks' or nil. |
78 | It is nil at an early stage of startup, and when Emacs | |
79 | is shutting down. */ | |
4c576a83 | 80 | |
db9f0278 JB |
81 | Lisp_Object Vrun_hooks; |
82 | ||
83 | /* Non-nil means record all fset's and provide's, to be undone | |
84 | if the file being autoloaded is not fully loaded. | |
85 | They are recorded by being consed onto the front of Vautoload_queue: | |
47b82df9 | 86 | (FUN . ODEF) for a defun, (0 . OFEATURES) for a provide. */ |
db9f0278 JB |
87 | |
88 | Lisp_Object Vautoload_queue; | |
89 | ||
90 | /* Current number of specbindings allocated in specpdl. */ | |
4c576a83 | 91 | |
d311d28c | 92 | ptrdiff_t specpdl_size; |
db9f0278 JB |
93 | |
94 | /* Pointer to beginning of specpdl. */ | |
4c576a83 | 95 | |
db9f0278 JB |
96 | struct specbinding *specpdl; |
97 | ||
98 | /* Pointer to first unused element in specpdl. */ | |
4c576a83 | 99 | |
ab837828 | 100 | struct specbinding *specpdl_ptr; |
db9f0278 | 101 | |
db9f0278 | 102 | /* Depth in Lisp evaluations and function calls. */ |
4c576a83 | 103 | |
57a96f5c | 104 | static EMACS_INT lisp_eval_depth; |
db9f0278 | 105 | |
be857679 | 106 | /* The value of num_nonmacro_input_events as of the last time we |
82da7701 | 107 | started to enter the debugger. If we decide to enter the debugger |
be857679 | 108 | again when this is still equal to num_nonmacro_input_events, then we |
82da7701 JB |
109 | know that the debugger itself has an error, and we should just |
110 | signal the error instead of entering an infinite loop of debugger | |
111 | invocations. */ | |
4c576a83 | 112 | |
d311d28c | 113 | static EMACS_INT when_entered_debugger; |
db9f0278 | 114 | |
a2ff3819 GM |
115 | /* The function from which the last `signal' was called. Set in |
116 | Fsignal. */ | |
117 | ||
118 | Lisp_Object Vsignaling_function; | |
119 | ||
d1f55f16 CY |
120 | /* If non-nil, Lisp code must not be run since some part of Emacs is |
121 | in an inconsistent state. Currently, x-create-frame uses this to | |
122 | avoid triggering window-configuration-change-hook while the new | |
123 | frame is half-initialized. */ | |
124 | Lisp_Object inhibit_lisp_code; | |
125 | ||
f66c7cf8 | 126 | static Lisp_Object funcall_lambda (Lisp_Object, ptrdiff_t, Lisp_Object *); |
1882aa38 | 127 | static bool interactive_p (void); |
7200d79c | 128 | static Lisp_Object apply_lambda (Lisp_Object fun, Lisp_Object args); |
e46f2325 DA |
129 | |
130 | /* Functions to set Lisp_Object slots of struct specbinding. */ | |
131 | ||
132 | static inline void | |
133 | set_specpdl_symbol (Lisp_Object symbol) | |
134 | { | |
135 | specpdl_ptr->symbol = symbol; | |
136 | } | |
137 | ||
138 | static inline void | |
139 | set_specpdl_old_value (Lisp_Object oldval) | |
140 | { | |
141 | specpdl_ptr->old_value = oldval; | |
142 | } | |
143 | ||
dfcf069d | 144 | void |
d3da34e0 | 145 | init_eval_once (void) |
db9f0278 | 146 | { |
98e8eae1 | 147 | enum { size = 50 }; |
38182d90 | 148 | specpdl = xmalloc (size * sizeof *specpdl); |
98e8eae1 | 149 | specpdl_size = size; |
270e8074 | 150 | specpdl_ptr = specpdl; |
6588243d | 151 | /* Don't forget to update docs (lispref node "Local Variables"). */ |
c530e1c2 | 152 | max_specpdl_size = 1300; /* 1000 is not enough for CEDET's c-by.el. */ |
d46f6bbb | 153 | max_lisp_eval_depth = 600; |
34d470ba RS |
154 | |
155 | Vrun_hooks = Qnil; | |
db9f0278 JB |
156 | } |
157 | ||
dfcf069d | 158 | void |
d3da34e0 | 159 | init_eval (void) |
db9f0278 JB |
160 | { |
161 | specpdl_ptr = specpdl; | |
162 | catchlist = 0; | |
163 | handlerlist = 0; | |
164 | backtrace_list = 0; | |
165 | Vquit_flag = Qnil; | |
166 | debug_on_next_call = 0; | |
167 | lisp_eval_depth = 0; | |
87e21fbd | 168 | #ifdef DEBUG_GCPRO |
15934ffa | 169 | gcpro_level = 0; |
87e21fbd | 170 | #endif |
be857679 | 171 | /* This is less than the initial value of num_nonmacro_input_events. */ |
b5b911f9 | 172 | when_entered_debugger = -1; |
db9f0278 JB |
173 | } |
174 | ||
f6d62986 | 175 | /* Unwind-protect function used by call_debugger. */ |
9f5903bb RS |
176 | |
177 | static Lisp_Object | |
d3da34e0 | 178 | restore_stack_limits (Lisp_Object data) |
9f5903bb RS |
179 | { |
180 | max_specpdl_size = XINT (XCAR (data)); | |
181 | max_lisp_eval_depth = XINT (XCDR (data)); | |
538f78c3 | 182 | return Qnil; |
9f5903bb RS |
183 | } |
184 | ||
185 | /* Call the Lisp debugger, giving it argument ARG. */ | |
186 | ||
7f7e0167 | 187 | Lisp_Object |
d3da34e0 | 188 | call_debugger (Lisp_Object arg) |
db9f0278 | 189 | { |
1882aa38 | 190 | bool debug_while_redisplaying; |
d311d28c | 191 | ptrdiff_t count = SPECPDL_INDEX (); |
3648c842 | 192 | Lisp_Object val; |
5816888b | 193 | EMACS_INT old_max = max_specpdl_size; |
177c0ea7 | 194 | |
9f5903bb RS |
195 | /* Temporarily bump up the stack limits, |
196 | so the debugger won't run out of stack. */ | |
177c0ea7 | 197 | |
9f5903bb RS |
198 | max_specpdl_size += 1; |
199 | record_unwind_protect (restore_stack_limits, | |
200 | Fcons (make_number (old_max), | |
201 | make_number (max_lisp_eval_depth))); | |
202 | max_specpdl_size = old_max; | |
203 | ||
204 | if (lisp_eval_depth + 40 > max_lisp_eval_depth) | |
205 | max_lisp_eval_depth = lisp_eval_depth + 40; | |
206 | ||
98e8eae1 | 207 | if (max_specpdl_size - 100 < SPECPDL_INDEX ()) |
9f5903bb | 208 | max_specpdl_size = SPECPDL_INDEX () + 100; |
177c0ea7 | 209 | |
d148e14d | 210 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
211 | if (display_hourglass_p) |
212 | cancel_hourglass (); | |
237c23b0 GM |
213 | #endif |
214 | ||
db9f0278 | 215 | debug_on_next_call = 0; |
be857679 | 216 | when_entered_debugger = num_nonmacro_input_events; |
3648c842 GM |
217 | |
218 | /* Resetting redisplaying_p to 0 makes sure that debug output is | |
219 | displayed if the debugger is invoked during redisplay. */ | |
220 | debug_while_redisplaying = redisplaying_p; | |
221 | redisplaying_p = 0; | |
556d7314 GM |
222 | specbind (intern ("debugger-may-continue"), |
223 | debug_while_redisplaying ? Qnil : Qt); | |
8efb6cc7 | 224 | specbind (Qinhibit_redisplay, Qnil); |
45b82ad0 | 225 | specbind (Qinhibit_debugger, Qt); |
9db6f6b4 GM |
226 | |
227 | #if 0 /* Binding this prevents execution of Lisp code during | |
228 | redisplay, which necessarily leads to display problems. */ | |
8efb6cc7 | 229 | specbind (Qinhibit_eval_during_redisplay, Qt); |
9db6f6b4 | 230 | #endif |
177c0ea7 | 231 | |
3648c842 GM |
232 | val = apply1 (Vdebugger, arg); |
233 | ||
234 | /* Interrupting redisplay and resuming it later is not safe under | |
235 | all circumstances. So, when the debugger returns, abort the | |
1b1acc13 | 236 | interrupted redisplay by going back to the top-level. */ |
3648c842 GM |
237 | if (debug_while_redisplaying) |
238 | Ftop_level (); | |
239 | ||
556d7314 | 240 | return unbind_to (count, val); |
db9f0278 JB |
241 | } |
242 | ||
475545b5 | 243 | static void |
d3da34e0 | 244 | do_debug_on_call (Lisp_Object code) |
db9f0278 JB |
245 | { |
246 | debug_on_next_call = 0; | |
247 | backtrace_list->debug_on_exit = 1; | |
248 | call_debugger (Fcons (code, Qnil)); | |
249 | } | |
250 | \f | |
251 | /* NOTE!!! Every function that can call EVAL must protect its args | |
252 | and temporaries from garbage collection while it needs them. | |
253 | The definition of `For' shows what you have to do. */ | |
254 | ||
255 | DEFUN ("or", For, Sor, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
256 | doc: /* Eval args until one of them yields non-nil, then return that value. |
257 | The remaining args are not evalled at all. | |
258 | If all args return nil, return nil. | |
533eb34b | 259 | usage: (or CONDITIONS...) */) |
5842a27b | 260 | (Lisp_Object args) |
db9f0278 | 261 | { |
e509f168 | 262 | register Lisp_Object val = Qnil; |
db9f0278 JB |
263 | struct gcpro gcpro1; |
264 | ||
e509f168 | 265 | GCPRO1 (args); |
db9f0278 | 266 | |
e509f168 | 267 | while (CONSP (args)) |
db9f0278 | 268 | { |
defb1411 | 269 | val = eval_sub (XCAR (args)); |
265a9e55 | 270 | if (!NILP (val)) |
db9f0278 | 271 | break; |
e509f168 | 272 | args = XCDR (args); |
db9f0278 | 273 | } |
db9f0278 JB |
274 | |
275 | UNGCPRO; | |
276 | return val; | |
277 | } | |
278 | ||
279 | DEFUN ("and", Fand, Sand, 0, UNEVALLED, 0, | |
b8de5714 | 280 | doc: /* Eval args until one of them yields nil, then return nil. |
9dbc9081 PJ |
281 | The remaining args are not evalled at all. |
282 | If no arg yields nil, return the last arg's value. | |
533eb34b | 283 | usage: (and CONDITIONS...) */) |
5842a27b | 284 | (Lisp_Object args) |
db9f0278 | 285 | { |
e509f168 | 286 | register Lisp_Object val = Qt; |
db9f0278 JB |
287 | struct gcpro gcpro1; |
288 | ||
e509f168 | 289 | GCPRO1 (args); |
db9f0278 | 290 | |
e509f168 | 291 | while (CONSP (args)) |
db9f0278 | 292 | { |
defb1411 | 293 | val = eval_sub (XCAR (args)); |
265a9e55 | 294 | if (NILP (val)) |
db9f0278 | 295 | break; |
e509f168 | 296 | args = XCDR (args); |
db9f0278 | 297 | } |
db9f0278 JB |
298 | |
299 | UNGCPRO; | |
300 | return val; | |
301 | } | |
302 | ||
303 | DEFUN ("if", Fif, Sif, 2, UNEVALLED, 0, | |
b8de5714 | 304 | doc: /* If COND yields non-nil, do THEN, else do ELSE... |
9dbc9081 PJ |
305 | Returns the value of THEN or the value of the last of the ELSE's. |
306 | THEN must be one expression, but ELSE... can be zero or more expressions. | |
307 | If COND yields nil, and there are no ELSE's, the value is nil. | |
7a25dc6d | 308 | usage: (if COND THEN ELSE...) */) |
5842a27b | 309 | (Lisp_Object args) |
db9f0278 JB |
310 | { |
311 | register Lisp_Object cond; | |
312 | struct gcpro gcpro1; | |
313 | ||
314 | GCPRO1 (args); | |
defb1411 | 315 | cond = eval_sub (Fcar (args)); |
db9f0278 JB |
316 | UNGCPRO; |
317 | ||
265a9e55 | 318 | if (!NILP (cond)) |
defb1411 | 319 | return eval_sub (Fcar (Fcdr (args))); |
db9f0278 JB |
320 | return Fprogn (Fcdr (Fcdr (args))); |
321 | } | |
322 | ||
323 | DEFUN ("cond", Fcond, Scond, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
324 | doc: /* Try each clause until one succeeds. |
325 | Each clause looks like (CONDITION BODY...). CONDITION is evaluated | |
326 | and, if the value is non-nil, this clause succeeds: | |
327 | then the expressions in BODY are evaluated and the last one's | |
328 | value is the value of the cond-form. | |
329 | If no clause succeeds, cond returns nil. | |
330 | If a clause has one element, as in (CONDITION), | |
331 | CONDITION's value if non-nil is returned from the cond-form. | |
7a25dc6d | 332 | usage: (cond CLAUSES...) */) |
5842a27b | 333 | (Lisp_Object args) |
db9f0278 JB |
334 | { |
335 | register Lisp_Object clause, val; | |
336 | struct gcpro gcpro1; | |
337 | ||
338 | val = Qnil; | |
339 | GCPRO1 (args); | |
265a9e55 | 340 | while (!NILP (args)) |
db9f0278 JB |
341 | { |
342 | clause = Fcar (args); | |
defb1411 | 343 | val = eval_sub (Fcar (clause)); |
265a9e55 | 344 | if (!NILP (val)) |
db9f0278 | 345 | { |
03699b14 KR |
346 | if (!EQ (XCDR (clause), Qnil)) |
347 | val = Fprogn (XCDR (clause)); | |
db9f0278 JB |
348 | break; |
349 | } | |
03699b14 | 350 | args = XCDR (args); |
db9f0278 JB |
351 | } |
352 | UNGCPRO; | |
353 | ||
354 | return val; | |
355 | } | |
356 | ||
a7ca3326 | 357 | DEFUN ("progn", Fprogn, Sprogn, 0, UNEVALLED, 0, |
9dbc9081 | 358 | doc: /* Eval BODY forms sequentially and return value of last one. |
5b4a1f50 | 359 | usage: (progn BODY...) */) |
5842a27b | 360 | (Lisp_Object args) |
db9f0278 | 361 | { |
e509f168 | 362 | register Lisp_Object val = Qnil; |
db9f0278 JB |
363 | struct gcpro gcpro1; |
364 | ||
e509f168 | 365 | GCPRO1 (args); |
db9f0278 | 366 | |
e509f168 | 367 | while (CONSP (args)) |
db9f0278 | 368 | { |
defb1411 | 369 | val = eval_sub (XCAR (args)); |
e509f168 | 370 | args = XCDR (args); |
db9f0278 | 371 | } |
db9f0278 JB |
372 | |
373 | UNGCPRO; | |
374 | return val; | |
375 | } | |
376 | ||
377 | DEFUN ("prog1", Fprog1, Sprog1, 1, UNEVALLED, 0, | |
bdee2ef3 | 378 | doc: /* Eval FIRST and BODY sequentially; return value from FIRST. |
9dbc9081 PJ |
379 | The value of FIRST is saved during the evaluation of the remaining args, |
380 | whose values are discarded. | |
7a25dc6d | 381 | usage: (prog1 FIRST BODY...) */) |
5842a27b | 382 | (Lisp_Object args) |
db9f0278 JB |
383 | { |
384 | Lisp_Object val; | |
385 | register Lisp_Object args_left; | |
386 | struct gcpro gcpro1, gcpro2; | |
db9f0278 JB |
387 | |
388 | args_left = args; | |
389 | val = Qnil; | |
390 | GCPRO2 (args, val); | |
391 | ||
856bbc81 PE |
392 | val = eval_sub (XCAR (args_left)); |
393 | while (CONSP (args_left = XCDR (args_left))) | |
394 | eval_sub (XCAR (args_left)); | |
db9f0278 JB |
395 | |
396 | UNGCPRO; | |
397 | return val; | |
398 | } | |
399 | ||
400 | DEFUN ("prog2", Fprog2, Sprog2, 2, UNEVALLED, 0, | |
bdee2ef3 | 401 | doc: /* Eval FORM1, FORM2 and BODY sequentially; return value from FORM2. |
82fc29a1 JB |
402 | The value of FORM2 is saved during the evaluation of the |
403 | remaining args, whose values are discarded. | |
404 | usage: (prog2 FORM1 FORM2 BODY...) */) | |
5842a27b | 405 | (Lisp_Object args) |
db9f0278 | 406 | { |
856bbc81 | 407 | struct gcpro gcpro1; |
db9f0278 | 408 | |
856bbc81 | 409 | GCPRO1 (args); |
856bbc81 | 410 | eval_sub (XCAR (args)); |
a63df926 PE |
411 | UNGCPRO; |
412 | return Fprog1 (XCDR (args)); | |
db9f0278 JB |
413 | } |
414 | ||
415 | DEFUN ("setq", Fsetq, Ssetq, 0, UNEVALLED, 0, | |
9dbc9081 PJ |
416 | doc: /* Set each SYM to the value of its VAL. |
417 | The symbols SYM are variables; they are literal (not evaluated). | |
418 | The values VAL are expressions; they are evaluated. | |
419 | Thus, (setq x (1+ y)) sets `x' to the value of `(1+ y)'. | |
420 | The second VAL is not computed until after the first SYM is set, and so on; | |
421 | each VAL can use the new value of variables set earlier in the `setq'. | |
422 | The return value of the `setq' form is the value of the last VAL. | |
819586b2 | 423 | usage: (setq [SYM VAL]...) */) |
5842a27b | 424 | (Lisp_Object args) |
db9f0278 JB |
425 | { |
426 | register Lisp_Object args_left; | |
b9598260 | 427 | register Lisp_Object val, sym, lex_binding; |
db9f0278 JB |
428 | struct gcpro gcpro1; |
429 | ||
1283140e | 430 | if (NILP (args)) |
db9f0278 JB |
431 | return Qnil; |
432 | ||
433 | args_left = args; | |
434 | GCPRO1 (args); | |
435 | ||
436 | do | |
437 | { | |
defb1411 | 438 | val = eval_sub (Fcar (Fcdr (args_left))); |
db9f0278 | 439 | sym = Fcar (args_left); |
b9598260 | 440 | |
defb1411 | 441 | /* Like for eval_sub, we do not check declared_special here since |
f07a954e SM |
442 | it's been done when let-binding. */ |
443 | if (!NILP (Vinternal_interpreter_environment) /* Mere optimization! */ | |
b9598260 | 444 | && SYMBOLP (sym) |
f07a954e SM |
445 | && !NILP (lex_binding |
446 | = Fassq (sym, Vinternal_interpreter_environment))) | |
b9598260 SM |
447 | XSETCDR (lex_binding, val); /* SYM is lexically bound. */ |
448 | else | |
449 | Fset (sym, val); /* SYM is dynamically bound. */ | |
450 | ||
db9f0278 JB |
451 | args_left = Fcdr (Fcdr (args_left)); |
452 | } | |
5e617bc2 | 453 | while (!NILP (args_left)); |
db9f0278 JB |
454 | |
455 | UNGCPRO; | |
456 | return val; | |
457 | } | |
177c0ea7 | 458 | |
db9f0278 | 459 | DEFUN ("quote", Fquote, Squote, 1, UNEVALLED, 0, |
9dbc9081 | 460 | doc: /* Return the argument, without evaluating it. `(quote x)' yields `x'. |
91a15bc6 SM |
461 | Warning: `quote' does not construct its return value, but just returns |
462 | the value that was pre-constructed by the Lisp reader (see info node | |
463 | `(elisp)Printed Representation'). | |
464 | This means that '(a . b) is not identical to (cons 'a 'b): the former | |
465 | does not cons. Quoting should be reserved for constants that will | |
466 | never be modified by side-effects, unless you like self-modifying code. | |
467 | See the common pitfall in info node `(elisp)Rearrangement' for an example | |
468 | of unexpected results when a quoted object is modified. | |
9dbc9081 | 469 | usage: (quote ARG) */) |
5842a27b | 470 | (Lisp_Object args) |
db9f0278 | 471 | { |
1283140e RS |
472 | if (!NILP (Fcdr (args))) |
473 | xsignal2 (Qwrong_number_of_arguments, Qquote, Flength (args)); | |
db9f0278 JB |
474 | return Fcar (args); |
475 | } | |
177c0ea7 | 476 | |
db9f0278 | 477 | DEFUN ("function", Ffunction, Sfunction, 1, UNEVALLED, 0, |
9dbc9081 PJ |
478 | doc: /* Like `quote', but preferred for objects which are functions. |
479 | In byte compilation, `function' causes its argument to be compiled. | |
480 | `quote' cannot do that. | |
481 | usage: (function ARG) */) | |
5842a27b | 482 | (Lisp_Object args) |
db9f0278 | 483 | { |
b9598260 SM |
484 | Lisp_Object quoted = XCAR (args); |
485 | ||
1283140e RS |
486 | if (!NILP (Fcdr (args))) |
487 | xsignal2 (Qwrong_number_of_arguments, Qfunction, Flength (args)); | |
b9598260 SM |
488 | |
489 | if (!NILP (Vinternal_interpreter_environment) | |
490 | && CONSP (quoted) | |
491 | && EQ (XCAR (quoted), Qlambda)) | |
492 | /* This is a lambda expression within a lexical environment; | |
493 | return an interpreted closure instead of a simple lambda. */ | |
23aba0ea SM |
494 | return Fcons (Qclosure, Fcons (Vinternal_interpreter_environment, |
495 | XCDR (quoted))); | |
b9598260 SM |
496 | else |
497 | /* Simply quote the argument. */ | |
498 | return quoted; | |
db9f0278 JB |
499 | } |
500 | ||
e0f331ab | 501 | |
a7ca3326 | 502 | DEFUN ("interactive-p", Finteractive_p, Sinteractive_p, 0, 0, 0, |
84b17ab0 | 503 | doc: /* Return t if the containing function was run directly by user input. |
82fc29a1 JB |
504 | This means that the function was called with `call-interactively' |
505 | \(which includes being called as the binding of a key) | |
84b17ab0 | 506 | and input is currently coming from the keyboard (not a keyboard macro), |
c63df42b RS |
507 | and Emacs is not running in batch mode (`noninteractive' is nil). |
508 | ||
509 | The only known proper use of `interactive-p' is in deciding whether to | |
510 | display a helpful message, or how to display it. If you're thinking | |
511 | of using it for any other purpose, it is quite likely that you're | |
512 | making a mistake. Think: what do you want to do when the command is | |
513 | called from a keyboard macro? | |
514 | ||
84b17ab0 CY |
515 | To test whether your function was called with `call-interactively', |
516 | either (i) add an extra optional argument and give it an `interactive' | |
517 | spec that specifies non-nil unconditionally (such as \"p\"); or (ii) | |
518 | use `called-interactively-p'. */) | |
5842a27b | 519 | (void) |
db9f0278 | 520 | { |
1882aa38 | 521 | return interactive_p () ? Qt : Qnil; |
e0f331ab GM |
522 | } |
523 | ||
524 | ||
9d28c33e | 525 | DEFUN ("called-interactively-p", Fcalled_interactively_p, Scalled_interactively_p, 0, 1, 0, |
84b17ab0 | 526 | doc: /* Return t if the containing function was called by `call-interactively'. |
9d28c33e SM |
527 | If KIND is `interactive', then only return t if the call was made |
528 | interactively by the user, i.e. not in `noninteractive' mode nor | |
529 | when `executing-kbd-macro'. | |
530 | If KIND is `any', on the other hand, it will return t for any kind of | |
531 | interactive call, including being called as the binding of a key, or | |
532 | from a keyboard macro, or in `noninteractive' mode. | |
533 | ||
534 | The only known proper use of `interactive' for KIND is in deciding | |
535 | whether to display a helpful message, or how to display it. If you're | |
536 | thinking of using it for any other purpose, it is quite likely that | |
537 | you're making a mistake. Think: what do you want to do when the | |
538 | command is called from a keyboard macro? | |
84b17ab0 | 539 | |
8c95e664 GM |
540 | Instead of using this function, it is sometimes cleaner to give your |
541 | function an extra optional argument whose `interactive' spec specifies | |
542 | non-nil unconditionally (\"p\" is a good way to do this), or via | |
543 | \(not (or executing-kbd-macro noninteractive)). */) | |
5842a27b | 544 | (Lisp_Object kind) |
c63df42b | 545 | { |
1882aa38 PE |
546 | return (((INTERACTIVE || !EQ (kind, intern ("interactive"))) |
547 | && interactive_p ()) | |
548 | ? Qt : Qnil); | |
c63df42b RS |
549 | } |
550 | ||
551 | ||
1882aa38 PE |
552 | /* Return true if function in which this appears was called using |
553 | call-interactively and is not a built-in. */ | |
e0f331ab | 554 | |
1882aa38 PE |
555 | static bool |
556 | interactive_p (void) | |
e0f331ab GM |
557 | { |
558 | struct backtrace *btp; | |
559 | Lisp_Object fun; | |
db9f0278 | 560 | |
db9f0278 | 561 | btp = backtrace_list; |
daa37602 JB |
562 | |
563 | /* If this isn't a byte-compiled function, there may be a frame at | |
e0f331ab | 564 | the top for Finteractive_p. If so, skip it. */ |
a7f96a35 | 565 | fun = Findirect_function (*btp->function, Qnil); |
0b31741c RS |
566 | if (SUBRP (fun) && (XSUBR (fun) == &Sinteractive_p |
567 | || XSUBR (fun) == &Scalled_interactively_p)) | |
db9f0278 | 568 | btp = btp->next; |
daa37602 JB |
569 | |
570 | /* If we're running an Emacs 18-style byte-compiled function, there | |
4402a9ed RS |
571 | may be a frame for Fbytecode at the top level. In any version of |
572 | Emacs there can be Fbytecode frames for subexpressions evaluated | |
573 | inside catch and condition-case. Skip past them. | |
daa37602 | 574 | |
4402a9ed | 575 | If this isn't a byte-compiled function, then we may now be |
daa37602 | 576 | looking at several frames for special forms. Skip past them. */ |
4402a9ed RS |
577 | while (btp |
578 | && (EQ (*btp->function, Qbytecode) | |
44f230aa | 579 | || btp->nargs == UNEVALLED)) |
a6e3fa71 JB |
580 | btp = btp->next; |
581 | ||
f6d62986 | 582 | /* `btp' now points at the frame of the innermost function that isn't |
daa37602 JB |
583 | a special form, ignoring frames for Finteractive_p and/or |
584 | Fbytecode at the top. If this frame is for a built-in function | |
1882aa38 | 585 | (such as load or eval-region) return false. */ |
a7f96a35 | 586 | fun = Findirect_function (*btp->function, Qnil); |
1882aa38 | 587 | if (SUBRP (fun)) |
e0f331ab | 588 | return 0; |
177c0ea7 | 589 | |
f6d62986 | 590 | /* `btp' points to the frame of a Lisp function that called interactive-p. |
db9f0278 JB |
591 | Return t if that function was called interactively. */ |
592 | if (btp && btp->next && EQ (*btp->next->function, Qcall_interactively)) | |
e0f331ab GM |
593 | return 1; |
594 | return 0; | |
db9f0278 JB |
595 | } |
596 | ||
e0f331ab | 597 | |
1848d15d | 598 | DEFUN ("defvaralias", Fdefvaralias, Sdefvaralias, 2, 3, 0, |
4a9308b8 | 599 | doc: /* Make NEW-ALIAS a variable alias for symbol BASE-VARIABLE. |
e102f0d8 | 600 | Aliased variables always have the same value; setting one sets the other. |
4a9308b8 | 601 | Third arg DOCSTRING, if non-nil, is documentation for NEW-ALIAS. If it is |
dd60787c GM |
602 | omitted or nil, NEW-ALIAS gets the documentation string of BASE-VARIABLE, |
603 | or of the variable at the end of the chain of aliases, if BASE-VARIABLE is | |
604 | itself an alias. If NEW-ALIAS is bound, and BASE-VARIABLE is not, | |
605 | then the value of BASE-VARIABLE is set to that of NEW-ALIAS. | |
4a9308b8 | 606 | The return value is BASE-VARIABLE. */) |
5842a27b | 607 | (Lisp_Object new_alias, Lisp_Object base_variable, Lisp_Object docstring) |
19cebf5a GM |
608 | { |
609 | struct Lisp_Symbol *sym; | |
1848d15d | 610 | |
4a9308b8 JB |
611 | CHECK_SYMBOL (new_alias); |
612 | CHECK_SYMBOL (base_variable); | |
19cebf5a | 613 | |
4a9308b8 | 614 | sym = XSYMBOL (new_alias); |
ce5b453a SM |
615 | |
616 | if (sym->constant) | |
178f2507 SM |
617 | /* Not sure why, but why not? */ |
618 | error ("Cannot make a constant an alias"); | |
ce5b453a SM |
619 | |
620 | switch (sym->redirect) | |
621 | { | |
622 | case SYMBOL_FORWARDED: | |
623 | error ("Cannot make an internal variable an alias"); | |
624 | case SYMBOL_LOCALIZED: | |
625 | error ("Don't know how to make a localized variable an alias"); | |
626 | } | |
627 | ||
dd60787c | 628 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg00834.html |
ce5b453a SM |
629 | If n_a is bound, but b_v is not, set the value of b_v to n_a, |
630 | so that old-code that affects n_a before the aliasing is setup | |
631 | still works. */ | |
632 | if (NILP (Fboundp (base_variable))) | |
94b612ad | 633 | set_internal (base_variable, find_symbol_value (new_alias), Qnil, 1); |
ce5b453a SM |
634 | |
635 | { | |
636 | struct specbinding *p; | |
637 | ||
bc985141 | 638 | for (p = specpdl_ptr; p > specpdl; ) |
d311d28c | 639 | if ((--p)->func == NULL |
ce5b453a SM |
640 | && (EQ (new_alias, |
641 | CONSP (p->symbol) ? XCAR (p->symbol) : p->symbol))) | |
642 | error ("Don't know how to make a let-bound variable an alias"); | |
643 | } | |
644 | ||
b9598260 | 645 | sym->declared_special = 1; |
0ac30604 | 646 | XSYMBOL (base_variable)->declared_special = 1; |
ce5b453a SM |
647 | sym->redirect = SYMBOL_VARALIAS; |
648 | SET_SYMBOL_ALIAS (sym, XSYMBOL (base_variable)); | |
4a9308b8 JB |
649 | sym->constant = SYMBOL_CONSTANT_P (base_variable); |
650 | LOADHIST_ATTACH (new_alias); | |
ce5b453a SM |
651 | /* Even if docstring is nil: remove old docstring. */ |
652 | Fput (new_alias, Qvariable_documentation, docstring); | |
1848d15d | 653 | |
4a9308b8 | 654 | return base_variable; |
19cebf5a GM |
655 | } |
656 | ||
657 | ||
db9f0278 | 658 | DEFUN ("defvar", Fdefvar, Sdefvar, 1, UNEVALLED, 0, |
29357847 | 659 | doc: /* Define SYMBOL as a variable, and return SYMBOL. |
c3a70e2b CY |
660 | You are not required to define a variable in order to use it, but |
661 | defining it lets you supply an initial value and documentation, which | |
662 | can be referred to by the Emacs help facilities and other programming | |
663 | tools. The `defvar' form also declares the variable as \"special\", | |
664 | so that it is always dynamically bound even if `lexical-binding' is t. | |
665 | ||
666 | The optional argument INITVALUE is evaluated, and used to set SYMBOL, | |
667 | only if SYMBOL's value is void. If SYMBOL is buffer-local, its | |
668 | default value is what is set; buffer-local values are not affected. | |
9dbc9081 | 669 | If INITVALUE is missing, SYMBOL's value is not set. |
733f68b6 LT |
670 | |
671 | If SYMBOL has a local binding, then this form affects the local | |
672 | binding. This is usually not what you want. Thus, if you need to | |
673 | load a file defining variables, with this form or with `defconst' or | |
674 | `defcustom', you should always load that file _outside_ any bindings | |
675 | for these variables. \(`defconst' and `defcustom' behave similarly in | |
676 | this respect.) | |
c3a70e2b CY |
677 | |
678 | The optional argument DOCSTRING is a documentation string for the | |
679 | variable. | |
680 | ||
681 | To define a user option, use `defcustom' instead of `defvar'. | |
2df5238c | 682 | usage: (defvar SYMBOL &optional INITVALUE DOCSTRING) */) |
5842a27b | 683 | (Lisp_Object args) |
db9f0278 | 684 | { |
a42ba017 | 685 | register Lisp_Object sym, tem, tail; |
db9f0278 JB |
686 | |
687 | sym = Fcar (args); | |
a42ba017 RS |
688 | tail = Fcdr (args); |
689 | if (!NILP (Fcdr (Fcdr (tail)))) | |
921baa95 | 690 | error ("Too many arguments"); |
a42ba017 | 691 | |
33568849 | 692 | tem = Fdefault_boundp (sym); |
a42ba017 | 693 | if (!NILP (tail)) |
db9f0278 | 694 | { |
ba83908c SM |
695 | /* Do it before evaluating the initial value, for self-references. */ |
696 | XSYMBOL (sym)->declared_special = 1; | |
590130fb | 697 | |
265a9e55 | 698 | if (NILP (tem)) |
defb1411 | 699 | Fset_default (sym, eval_sub (Fcar (tail))); |
d0bce91e SM |
700 | else |
701 | { /* Check if there is really a global binding rather than just a let | |
702 | binding that shadows the global unboundness of the var. */ | |
40bce90b | 703 | struct specbinding *pdl = specpdl_ptr; |
d311d28c | 704 | while (pdl > specpdl) |
d0bce91e | 705 | { |
d311d28c | 706 | if (EQ ((--pdl)->symbol, sym) && !pdl->func |
d0bce91e SM |
707 | && EQ (pdl->old_value, Qunbound)) |
708 | { | |
709 | message_with_string ("Warning: defvar ignored because %s is let-bound", | |
710 | SYMBOL_NAME (sym), 1); | |
711 | break; | |
712 | } | |
713 | } | |
714 | } | |
33568849 | 715 | tail = Fcdr (tail); |
e509f168 SM |
716 | tem = Fcar (tail); |
717 | if (!NILP (tem)) | |
33568849 | 718 | { |
33568849 SM |
719 | if (!NILP (Vpurify_flag)) |
720 | tem = Fpurecopy (tem); | |
721 | Fput (sym, Qvariable_documentation, tem); | |
722 | } | |
6fd797f5 | 723 | LOADHIST_ATTACH (sym); |
db9f0278 | 724 | } |
f07a954e SM |
725 | else if (!NILP (Vinternal_interpreter_environment) |
726 | && !XSYMBOL (sym)->declared_special) | |
727 | /* A simple (defvar foo) with lexical scoping does "nothing" except | |
728 | declare that var to be dynamically scoped *locally* (i.e. within | |
729 | the current file or let-block). */ | |
730 | Vinternal_interpreter_environment = | |
731 | Fcons (sym, Vinternal_interpreter_environment); | |
33568849 | 732 | else |
d28a2170 PE |
733 | { |
734 | /* Simple (defvar <var>) should not count as a definition at all. | |
735 | It could get in the way of other definitions, and unloading this | |
736 | package could try to make the variable unbound. */ | |
737 | } | |
addf35fd | 738 | |
db9f0278 JB |
739 | return sym; |
740 | } | |
741 | ||
742 | DEFUN ("defconst", Fdefconst, Sdefconst, 2, UNEVALLED, 0, | |
9dbc9081 | 743 | doc: /* Define SYMBOL as a constant variable. |
c3a70e2b CY |
744 | This declares that neither programs nor users should ever change the |
745 | value. This constancy is not actually enforced by Emacs Lisp, but | |
746 | SYMBOL is marked as a special variable so that it is never lexically | |
747 | bound. | |
748 | ||
749 | The `defconst' form always sets the value of SYMBOL to the result of | |
750 | evalling INITVALUE. If SYMBOL is buffer-local, its default value is | |
751 | what is set; buffer-local values are not affected. If SYMBOL has a | |
752 | local binding, then this form sets the local binding's value. | |
753 | However, you should normally not make local bindings for variables | |
754 | defined with this form. | |
755 | ||
756 | The optional DOCSTRING specifies the variable's documentation string. | |
7a25dc6d | 757 | usage: (defconst SYMBOL INITVALUE [DOCSTRING]) */) |
5842a27b | 758 | (Lisp_Object args) |
db9f0278 JB |
759 | { |
760 | register Lisp_Object sym, tem; | |
761 | ||
762 | sym = Fcar (args); | |
a42ba017 | 763 | if (!NILP (Fcdr (Fcdr (Fcdr (args))))) |
921baa95 | 764 | error ("Too many arguments"); |
a42ba017 | 765 | |
defb1411 | 766 | tem = eval_sub (Fcar (Fcdr (args))); |
1182a7cb DL |
767 | if (!NILP (Vpurify_flag)) |
768 | tem = Fpurecopy (tem); | |
769 | Fset_default (sym, tem); | |
b9598260 | 770 | XSYMBOL (sym)->declared_special = 1; |
db9f0278 | 771 | tem = Fcar (Fcdr (Fcdr (args))); |
265a9e55 | 772 | if (!NILP (tem)) |
db9f0278 | 773 | { |
265a9e55 | 774 | if (!NILP (Vpurify_flag)) |
db9f0278 JB |
775 | tem = Fpurecopy (tem); |
776 | Fput (sym, Qvariable_documentation, tem); | |
777 | } | |
873759d5 | 778 | Fput (sym, Qrisky_local_variable, Qt); |
6fd797f5 | 779 | LOADHIST_ATTACH (sym); |
db9f0278 JB |
780 | return sym; |
781 | } | |
782 | ||
513749ee SM |
783 | /* Make SYMBOL lexically scoped. */ |
784 | DEFUN ("internal-make-var-non-special", Fmake_var_non_special, | |
785 | Smake_var_non_special, 1, 1, 0, | |
786 | doc: /* Internal function. */) | |
787 | (Lisp_Object symbol) | |
788 | { | |
789 | CHECK_SYMBOL (symbol); | |
790 | XSYMBOL (symbol)->declared_special = 0; | |
791 | return Qnil; | |
792 | } | |
793 | ||
db9f0278 JB |
794 | \f |
795 | DEFUN ("let*", FletX, SletX, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
796 | doc: /* Bind variables according to VARLIST then eval BODY. |
797 | The value of the last form in BODY is returned. | |
798 | Each element of VARLIST is a symbol (which is bound to nil) | |
799 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
800 | Each VALUEFORM can refer to the symbols already bound by this VARLIST. | |
7a25dc6d | 801 | usage: (let* VARLIST BODY...) */) |
5842a27b | 802 | (Lisp_Object args) |
db9f0278 | 803 | { |
b9598260 | 804 | Lisp_Object varlist, var, val, elt, lexenv; |
d311d28c | 805 | ptrdiff_t count = SPECPDL_INDEX (); |
db9f0278 JB |
806 | struct gcpro gcpro1, gcpro2, gcpro3; |
807 | ||
808 | GCPRO3 (args, elt, varlist); | |
809 | ||
b9598260 SM |
810 | lexenv = Vinternal_interpreter_environment; |
811 | ||
db9f0278 | 812 | varlist = Fcar (args); |
b9598260 | 813 | while (CONSP (varlist)) |
db9f0278 JB |
814 | { |
815 | QUIT; | |
b9598260 SM |
816 | |
817 | elt = XCAR (varlist); | |
90165123 | 818 | if (SYMBOLP (elt)) |
b9598260 SM |
819 | { |
820 | var = elt; | |
821 | val = Qnil; | |
822 | } | |
08564963 | 823 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 824 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 JB |
825 | else |
826 | { | |
b9598260 | 827 | var = Fcar (elt); |
defb1411 | 828 | val = eval_sub (Fcar (Fcdr (elt))); |
db9f0278 | 829 | } |
b9598260 | 830 | |
f07a954e SM |
831 | if (!NILP (lexenv) && SYMBOLP (var) |
832 | && !XSYMBOL (var)->declared_special | |
833 | && NILP (Fmemq (var, Vinternal_interpreter_environment))) | |
b9598260 SM |
834 | /* Lexically bind VAR by adding it to the interpreter's binding |
835 | alist. */ | |
836 | { | |
f07a954e SM |
837 | Lisp_Object newenv |
838 | = Fcons (Fcons (var, val), Vinternal_interpreter_environment); | |
839 | if (EQ (Vinternal_interpreter_environment, lexenv)) | |
840 | /* Save the old lexical environment on the specpdl stack, | |
841 | but only for the first lexical binding, since we'll never | |
842 | need to revert to one of the intermediate ones. */ | |
843 | specbind (Qinternal_interpreter_environment, newenv); | |
844 | else | |
845 | Vinternal_interpreter_environment = newenv; | |
db9f0278 | 846 | } |
b9598260 SM |
847 | else |
848 | specbind (var, val); | |
849 | ||
850 | varlist = XCDR (varlist); | |
db9f0278 JB |
851 | } |
852 | UNGCPRO; | |
853 | val = Fprogn (Fcdr (args)); | |
854 | return unbind_to (count, val); | |
855 | } | |
856 | ||
857 | DEFUN ("let", Flet, Slet, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
858 | doc: /* Bind variables according to VARLIST then eval BODY. |
859 | The value of the last form in BODY is returned. | |
860 | Each element of VARLIST is a symbol (which is bound to nil) | |
861 | or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM). | |
862 | All the VALUEFORMs are evalled before any symbols are bound. | |
7a25dc6d | 863 | usage: (let VARLIST BODY...) */) |
5842a27b | 864 | (Lisp_Object args) |
db9f0278 | 865 | { |
b9598260 | 866 | Lisp_Object *temps, tem, lexenv; |
db9f0278 | 867 | register Lisp_Object elt, varlist; |
d311d28c | 868 | ptrdiff_t count = SPECPDL_INDEX (); |
f66c7cf8 | 869 | ptrdiff_t argnum; |
db9f0278 | 870 | struct gcpro gcpro1, gcpro2; |
3a7a9129 | 871 | USE_SAFE_ALLOCA; |
db9f0278 JB |
872 | |
873 | varlist = Fcar (args); | |
874 | ||
f6d62986 | 875 | /* Make space to hold the values to give the bound variables. */ |
db9f0278 | 876 | elt = Flength (varlist); |
b72e0717 | 877 | SAFE_ALLOCA_LISP (temps, XFASTINT (elt)); |
db9f0278 | 878 | |
f6d62986 | 879 | /* Compute the values and store them in `temps'. */ |
db9f0278 JB |
880 | |
881 | GCPRO2 (args, *temps); | |
882 | gcpro2.nvars = 0; | |
883 | ||
67ee9f6e | 884 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 JB |
885 | { |
886 | QUIT; | |
67ee9f6e | 887 | elt = XCAR (varlist); |
90165123 | 888 | if (SYMBOLP (elt)) |
db9f0278 | 889 | temps [argnum++] = Qnil; |
08564963 | 890 | else if (! NILP (Fcdr (Fcdr (elt)))) |
734d55a2 | 891 | signal_error ("`let' bindings can have only one value-form", elt); |
db9f0278 | 892 | else |
defb1411 | 893 | temps [argnum++] = eval_sub (Fcar (Fcdr (elt))); |
db9f0278 JB |
894 | gcpro2.nvars = argnum; |
895 | } | |
896 | UNGCPRO; | |
897 | ||
b9598260 SM |
898 | lexenv = Vinternal_interpreter_environment; |
899 | ||
db9f0278 | 900 | varlist = Fcar (args); |
67ee9f6e | 901 | for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist)) |
db9f0278 | 902 | { |
b9598260 SM |
903 | Lisp_Object var; |
904 | ||
67ee9f6e | 905 | elt = XCAR (varlist); |
b9598260 | 906 | var = SYMBOLP (elt) ? elt : Fcar (elt); |
db9f0278 | 907 | tem = temps[argnum++]; |
b9598260 | 908 | |
f07a954e SM |
909 | if (!NILP (lexenv) && SYMBOLP (var) |
910 | && !XSYMBOL (var)->declared_special | |
911 | && NILP (Fmemq (var, Vinternal_interpreter_environment))) | |
b9598260 SM |
912 | /* Lexically bind VAR by adding it to the lexenv alist. */ |
913 | lexenv = Fcons (Fcons (var, tem), lexenv); | |
db9f0278 | 914 | else |
b9598260 SM |
915 | /* Dynamically bind VAR. */ |
916 | specbind (var, tem); | |
db9f0278 JB |
917 | } |
918 | ||
b9598260 SM |
919 | if (!EQ (lexenv, Vinternal_interpreter_environment)) |
920 | /* Instantiate a new lexical environment. */ | |
921 | specbind (Qinternal_interpreter_environment, lexenv); | |
922 | ||
db9f0278 | 923 | elt = Fprogn (Fcdr (args)); |
3a7a9129 | 924 | SAFE_FREE (); |
db9f0278 JB |
925 | return unbind_to (count, elt); |
926 | } | |
927 | ||
928 | DEFUN ("while", Fwhile, Swhile, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
929 | doc: /* If TEST yields non-nil, eval BODY... and repeat. |
930 | The order of execution is thus TEST, BODY, TEST, BODY and so on | |
931 | until TEST returns nil. | |
7a25dc6d | 932 | usage: (while TEST BODY...) */) |
5842a27b | 933 | (Lisp_Object args) |
db9f0278 | 934 | { |
2b9bde76 | 935 | Lisp_Object test, body; |
db9f0278 JB |
936 | struct gcpro gcpro1, gcpro2; |
937 | ||
938 | GCPRO2 (test, body); | |
939 | ||
940 | test = Fcar (args); | |
941 | body = Fcdr (args); | |
defb1411 | 942 | while (!NILP (eval_sub (test))) |
db9f0278 JB |
943 | { |
944 | QUIT; | |
945 | Fprogn (body); | |
946 | } | |
947 | ||
948 | UNGCPRO; | |
949 | return Qnil; | |
950 | } | |
951 | ||
952 | DEFUN ("macroexpand", Fmacroexpand, Smacroexpand, 1, 2, 0, | |
9dbc9081 PJ |
953 | doc: /* Return result of expanding macros at top level of FORM. |
954 | If FORM is not a macro call, it is returned unchanged. | |
955 | Otherwise, the macro is expanded and the expansion is considered | |
956 | in place of FORM. When a non-macro-call results, it is returned. | |
957 | ||
958 | The second optional arg ENVIRONMENT specifies an environment of macro | |
959 | definitions to shadow the loaded ones for use in file byte-compilation. */) | |
5842a27b | 960 | (Lisp_Object form, Lisp_Object environment) |
db9f0278 | 961 | { |
23d6b5a6 | 962 | /* With cleanups from Hallvard Furuseth. */ |
db9f0278 JB |
963 | register Lisp_Object expander, sym, def, tem; |
964 | ||
965 | while (1) | |
966 | { | |
967 | /* Come back here each time we expand a macro call, | |
968 | in case it expands into another macro call. */ | |
90165123 | 969 | if (!CONSP (form)) |
db9f0278 | 970 | break; |
23d6b5a6 | 971 | /* Set SYM, give DEF and TEM right values in case SYM is not a symbol. */ |
03699b14 | 972 | def = sym = XCAR (form); |
23d6b5a6 | 973 | tem = Qnil; |
db9f0278 JB |
974 | /* Trace symbols aliases to other symbols |
975 | until we get a symbol that is not an alias. */ | |
90165123 | 976 | while (SYMBOLP (def)) |
db9f0278 JB |
977 | { |
978 | QUIT; | |
23d6b5a6 | 979 | sym = def; |
79e8bfbf | 980 | tem = Fassq (sym, environment); |
265a9e55 | 981 | if (NILP (tem)) |
db9f0278 | 982 | { |
c644523b | 983 | def = XSYMBOL (sym)->function; |
23d6b5a6 JB |
984 | if (!EQ (def, Qunbound)) |
985 | continue; | |
db9f0278 | 986 | } |
23d6b5a6 | 987 | break; |
db9f0278 | 988 | } |
79e8bfbf | 989 | /* Right now TEM is the result from SYM in ENVIRONMENT, |
db9f0278 | 990 | and if TEM is nil then DEF is SYM's function definition. */ |
265a9e55 | 991 | if (NILP (tem)) |
db9f0278 | 992 | { |
79e8bfbf | 993 | /* SYM is not mentioned in ENVIRONMENT. |
db9f0278 | 994 | Look at its function definition. */ |
7abaf5cc SM |
995 | struct gcpro gcpro1; |
996 | GCPRO1 (form); | |
997 | def = Fautoload_do_load (def, sym, Qmacro); | |
998 | UNGCPRO; | |
90165123 | 999 | if (EQ (def, Qunbound) || !CONSP (def)) |
f6d62986 | 1000 | /* Not defined or definition not suitable. */ |
db9f0278 | 1001 | break; |
7abaf5cc | 1002 | if (!EQ (XCAR (def), Qmacro)) |
db9f0278 | 1003 | break; |
03699b14 | 1004 | else expander = XCDR (def); |
db9f0278 JB |
1005 | } |
1006 | else | |
1007 | { | |
03699b14 | 1008 | expander = XCDR (tem); |
265a9e55 | 1009 | if (NILP (expander)) |
db9f0278 JB |
1010 | break; |
1011 | } | |
4f18a4ed SM |
1012 | { |
1013 | Lisp_Object newform = apply1 (expander, XCDR (form)); | |
1014 | if (EQ (form, newform)) | |
1015 | break; | |
1016 | else | |
1017 | form = newform; | |
1018 | } | |
db9f0278 JB |
1019 | } |
1020 | return form; | |
1021 | } | |
1022 | \f | |
1023 | DEFUN ("catch", Fcatch, Scatch, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1024 | doc: /* Eval BODY allowing nonlocal exits using `throw'. |
1025 | TAG is evalled to get the tag to use; it must not be nil. | |
1026 | ||
1027 | Then the BODY is executed. | |
1d632ccf | 1028 | Within BODY, a call to `throw' with the same TAG exits BODY and this `catch'. |
9dbc9081 PJ |
1029 | If no throw happens, `catch' returns the value of the last BODY form. |
1030 | If a throw happens, it specifies the value to return from `catch'. | |
7a25dc6d | 1031 | usage: (catch TAG BODY...) */) |
5842a27b | 1032 | (Lisp_Object args) |
db9f0278 JB |
1033 | { |
1034 | register Lisp_Object tag; | |
1035 | struct gcpro gcpro1; | |
1036 | ||
1037 | GCPRO1 (args); | |
defb1411 | 1038 | tag = eval_sub (Fcar (args)); |
db9f0278 JB |
1039 | UNGCPRO; |
1040 | return internal_catch (tag, Fprogn, Fcdr (args)); | |
1041 | } | |
1042 | ||
1043 | /* Set up a catch, then call C function FUNC on argument ARG. | |
1044 | FUNC should return a Lisp_Object. | |
1045 | This is how catches are done from within C code. */ | |
1046 | ||
1047 | Lisp_Object | |
d3da34e0 | 1048 | internal_catch (Lisp_Object tag, Lisp_Object (*func) (Lisp_Object), Lisp_Object arg) |
db9f0278 JB |
1049 | { |
1050 | /* This structure is made part of the chain `catchlist'. */ | |
1051 | struct catchtag c; | |
1052 | ||
1053 | /* Fill in the components of c, and put it on the list. */ | |
1054 | c.next = catchlist; | |
1055 | c.tag = tag; | |
1056 | c.val = Qnil; | |
1057 | c.backlist = backtrace_list; | |
1058 | c.handlerlist = handlerlist; | |
1059 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1060 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1061 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1062 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1063 | c.gcpro = gcprolist; |
bcf28080 | 1064 | c.byte_stack = byte_stack_list; |
db9f0278 JB |
1065 | catchlist = &c; |
1066 | ||
1067 | /* Call FUNC. */ | |
0328b6de | 1068 | if (! sys_setjmp (c.jmp)) |
db9f0278 JB |
1069 | c.val = (*func) (arg); |
1070 | ||
1071 | /* Throw works by a longjmp that comes right here. */ | |
1072 | catchlist = c.next; | |
1073 | return c.val; | |
1074 | } | |
1075 | ||
ba410f40 JB |
1076 | /* Unwind the specbind, catch, and handler stacks back to CATCH, and |
1077 | jump to that CATCH, returning VALUE as the value of that catch. | |
db9f0278 | 1078 | |
ba410f40 JB |
1079 | This is the guts Fthrow and Fsignal; they differ only in the way |
1080 | they choose the catch tag to throw to. A catch tag for a | |
1081 | condition-case form has a TAG of Qnil. | |
db9f0278 | 1082 | |
ba410f40 JB |
1083 | Before each catch is discarded, unbind all special bindings and |
1084 | execute all unwind-protect clauses made above that catch. Unwind | |
1085 | the handler stack as we go, so that the proper handlers are in | |
1086 | effect for each unwind-protect clause we run. At the end, restore | |
1087 | some static info saved in CATCH, and longjmp to the location | |
1088 | specified in the | |
1089 | ||
1090 | This is used for correct unwinding in Fthrow and Fsignal. */ | |
db9f0278 | 1091 | |
845ca893 | 1092 | static _Noreturn void |
d3da34e0 | 1093 | unwind_to_catch (struct catchtag *catch, Lisp_Object value) |
db9f0278 | 1094 | { |
1882aa38 | 1095 | bool last_time; |
db9f0278 | 1096 | |
ba410f40 JB |
1097 | /* Save the value in the tag. */ |
1098 | catch->val = value; | |
1099 | ||
0b31741c | 1100 | /* Restore certain special C variables. */ |
1cdc3155 | 1101 | set_poll_suppress_count (catch->poll_suppress_count); |
c1788fbc | 1102 | UNBLOCK_INPUT_TO (catch->interrupt_input_blocked); |
69bbd6bd | 1103 | immediate_quit = 0; |
82da7701 | 1104 | |
db9f0278 JB |
1105 | do |
1106 | { | |
1107 | last_time = catchlist == catch; | |
82da7701 JB |
1108 | |
1109 | /* Unwind the specpdl stack, and then restore the proper set of | |
bb8e180f | 1110 | handlers. */ |
db9f0278 JB |
1111 | unbind_to (catchlist->pdlcount, Qnil); |
1112 | handlerlist = catchlist->handlerlist; | |
1113 | catchlist = catchlist->next; | |
1114 | } | |
1115 | while (! last_time); | |
1116 | ||
a2a103bb | 1117 | #if HAVE_X_WINDOWS |
88019a63 RS |
1118 | /* If x_catch_errors was done, turn it off now. |
1119 | (First we give unbind_to a chance to do that.) */ | |
e6aee454 | 1120 | #if 0 /* This would disable x_catch_errors after x_connection_closed. |
bb8e180f AS |
1121 | The catch must remain in effect during that delicate |
1122 | state. --lorentey */ | |
88019a63 | 1123 | x_fully_uncatch_errors (); |
e6aee454 | 1124 | #endif |
a2a103bb | 1125 | #endif |
88019a63 | 1126 | |
bcf28080 | 1127 | byte_stack_list = catch->byte_stack; |
db9f0278 | 1128 | gcprolist = catch->gcpro; |
15934ffa | 1129 | #ifdef DEBUG_GCPRO |
d8e2b5ba | 1130 | gcpro_level = gcprolist ? gcprolist->level + 1 : 0; |
15934ffa | 1131 | #endif |
db9f0278 JB |
1132 | backtrace_list = catch->backlist; |
1133 | lisp_eval_depth = catch->lisp_eval_depth; | |
177c0ea7 | 1134 | |
0328b6de | 1135 | sys_longjmp (catch->jmp, 1); |
db9f0278 JB |
1136 | } |
1137 | ||
a7ca3326 | 1138 | DEFUN ("throw", Fthrow, Sthrow, 2, 2, 0, |
9dbc9081 PJ |
1139 | doc: /* Throw to the catch for TAG and return VALUE from it. |
1140 | Both TAG and VALUE are evalled. */) | |
5842a27b | 1141 | (register Lisp_Object tag, Lisp_Object value) |
db9f0278 JB |
1142 | { |
1143 | register struct catchtag *c; | |
1144 | ||
8788120f KS |
1145 | if (!NILP (tag)) |
1146 | for (c = catchlist; c; c = c->next) | |
1147 | { | |
1148 | if (EQ (c->tag, tag)) | |
1149 | unwind_to_catch (c, value); | |
1150 | } | |
734d55a2 | 1151 | xsignal2 (Qno_catch, tag, value); |
db9f0278 JB |
1152 | } |
1153 | ||
1154 | ||
1155 | DEFUN ("unwind-protect", Funwind_protect, Sunwind_protect, 1, UNEVALLED, 0, | |
9dbc9081 PJ |
1156 | doc: /* Do BODYFORM, protecting with UNWINDFORMS. |
1157 | If BODYFORM completes normally, its value is returned | |
1158 | after executing the UNWINDFORMS. | |
1159 | If BODYFORM exits nonlocally, the UNWINDFORMS are executed anyway. | |
7a25dc6d | 1160 | usage: (unwind-protect BODYFORM UNWINDFORMS...) */) |
5842a27b | 1161 | (Lisp_Object args) |
db9f0278 JB |
1162 | { |
1163 | Lisp_Object val; | |
d311d28c | 1164 | ptrdiff_t count = SPECPDL_INDEX (); |
db9f0278 | 1165 | |
04b28167 | 1166 | record_unwind_protect (Fprogn, Fcdr (args)); |
defb1411 | 1167 | val = eval_sub (Fcar (args)); |
177c0ea7 | 1168 | return unbind_to (count, val); |
db9f0278 JB |
1169 | } |
1170 | \f | |
db9f0278 | 1171 | DEFUN ("condition-case", Fcondition_case, Scondition_case, 2, UNEVALLED, 0, |
9dbc9081 | 1172 | doc: /* Regain control when an error is signaled. |
1b1acc13 | 1173 | Executes BODYFORM and returns its value if no error happens. |
9dbc9081 PJ |
1174 | Each element of HANDLERS looks like (CONDITION-NAME BODY...) |
1175 | where the BODY is made of Lisp expressions. | |
1176 | ||
1177 | A handler is applicable to an error | |
1178 | if CONDITION-NAME is one of the error's condition names. | |
1179 | If an error happens, the first applicable handler is run. | |
1180 | ||
024a2d76 CY |
1181 | The car of a handler may be a list of condition names instead of a |
1182 | single condition name; then it handles all of them. If the special | |
1183 | condition name `debug' is present in this list, it allows another | |
1184 | condition in the list to run the debugger if `debug-on-error' and the | |
1185 | other usual mechanisms says it should (otherwise, `condition-case' | |
1186 | suppresses the debugger). | |
9dbc9081 | 1187 | |
c997bb25 RS |
1188 | When a handler handles an error, control returns to the `condition-case' |
1189 | and it executes the handler's BODY... | |
d0acbbaf | 1190 | with VAR bound to (ERROR-SYMBOL . SIGNAL-DATA) from the error. |
bb8e180f | 1191 | \(If VAR is nil, the handler can't access that information.) |
c997bb25 RS |
1192 | Then the value of the last BODY form is returned from the `condition-case' |
1193 | expression. | |
9dbc9081 | 1194 | |
9dbc9081 | 1195 | See also the function `signal' for more info. |
2b47b74d | 1196 | usage: (condition-case VAR BODYFORM &rest HANDLERS) */) |
bb8e180f | 1197 | (Lisp_Object args) |
db9f0278 | 1198 | { |
40bce90b PE |
1199 | Lisp_Object var = Fcar (args); |
1200 | Lisp_Object bodyform = Fcar (Fcdr (args)); | |
1201 | Lisp_Object handlers = Fcdr (Fcdr (args)); | |
ee830945 RS |
1202 | |
1203 | return internal_lisp_condition_case (var, bodyform, handlers); | |
1204 | } | |
1205 | ||
1206 | /* Like Fcondition_case, but the args are separate | |
1207 | rather than passed in a list. Used by Fbyte_code. */ | |
1208 | ||
1209 | Lisp_Object | |
d3da34e0 JB |
1210 | internal_lisp_condition_case (volatile Lisp_Object var, Lisp_Object bodyform, |
1211 | Lisp_Object handlers) | |
ee830945 RS |
1212 | { |
1213 | Lisp_Object val; | |
1214 | struct catchtag c; | |
1215 | struct handler h; | |
1216 | ||
b7826503 | 1217 | CHECK_SYMBOL (var); |
82da7701 | 1218 | |
2b47b74d | 1219 | for (val = handlers; CONSP (val); val = XCDR (val)) |
82da7701 JB |
1220 | { |
1221 | Lisp_Object tem; | |
2b47b74d | 1222 | tem = XCAR (val); |
5f96776a RS |
1223 | if (! (NILP (tem) |
1224 | || (CONSP (tem) | |
03699b14 KR |
1225 | && (SYMBOLP (XCAR (tem)) |
1226 | || CONSP (XCAR (tem)))))) | |
e6c3da20 EZ |
1227 | error ("Invalid condition handler: %s", |
1228 | SDATA (Fprin1_to_string (tem, Qt))); | |
82da7701 | 1229 | } |
db9f0278 JB |
1230 | |
1231 | c.tag = Qnil; | |
1232 | c.val = Qnil; | |
1233 | c.backlist = backtrace_list; | |
1234 | c.handlerlist = handlerlist; | |
1235 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1236 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1237 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1238 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1239 | c.gcpro = gcprolist; |
bcf28080 | 1240 | c.byte_stack = byte_stack_list; |
0328b6de | 1241 | if (sys_setjmp (c.jmp)) |
db9f0278 | 1242 | { |
265a9e55 | 1243 | if (!NILP (h.var)) |
bb8e180f | 1244 | specbind (h.var, c.val); |
9d58218c | 1245 | val = Fprogn (Fcdr (h.chosen_clause)); |
82da7701 JB |
1246 | |
1247 | /* Note that this just undoes the binding of h.var; whoever | |
1248 | longjumped to us unwound the stack to c.pdlcount before | |
1249 | throwing. */ | |
db9f0278 JB |
1250 | unbind_to (c.pdlcount, Qnil); |
1251 | return val; | |
1252 | } | |
1253 | c.next = catchlist; | |
1254 | catchlist = &c; | |
177c0ea7 | 1255 | |
82da7701 JB |
1256 | h.var = var; |
1257 | h.handler = handlers; | |
db9f0278 | 1258 | h.next = handlerlist; |
db9f0278 JB |
1259 | h.tag = &c; |
1260 | handlerlist = &h; | |
1261 | ||
defb1411 | 1262 | val = eval_sub (bodyform); |
db9f0278 JB |
1263 | catchlist = c.next; |
1264 | handlerlist = h.next; | |
1265 | return val; | |
1266 | } | |
1267 | ||
f029ca5f RS |
1268 | /* Call the function BFUN with no arguments, catching errors within it |
1269 | according to HANDLERS. If there is an error, call HFUN with | |
1270 | one argument which is the data that describes the error: | |
1271 | (SIGNALNAME . DATA) | |
1272 | ||
1273 | HANDLERS can be a list of conditions to catch. | |
1274 | If HANDLERS is Qt, catch all errors. | |
1275 | If HANDLERS is Qerror, catch all errors | |
1276 | but allow the debugger to run if that is enabled. */ | |
1277 | ||
db9f0278 | 1278 | Lisp_Object |
d3da34e0 JB |
1279 | internal_condition_case (Lisp_Object (*bfun) (void), Lisp_Object handlers, |
1280 | Lisp_Object (*hfun) (Lisp_Object)) | |
db9f0278 JB |
1281 | { |
1282 | Lisp_Object val; | |
1283 | struct catchtag c; | |
1284 | struct handler h; | |
1285 | ||
1286 | c.tag = Qnil; | |
1287 | c.val = Qnil; | |
1288 | c.backlist = backtrace_list; | |
1289 | c.handlerlist = handlerlist; | |
1290 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1291 | c.pdlcount = SPECPDL_INDEX (); |
db9f0278 | 1292 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1293 | c.interrupt_input_blocked = interrupt_input_blocked; |
db9f0278 | 1294 | c.gcpro = gcprolist; |
bcf28080 | 1295 | c.byte_stack = byte_stack_list; |
0328b6de | 1296 | if (sys_setjmp (c.jmp)) |
db9f0278 | 1297 | { |
9d58218c | 1298 | return (*hfun) (c.val); |
db9f0278 JB |
1299 | } |
1300 | c.next = catchlist; | |
1301 | catchlist = &c; | |
1302 | h.handler = handlers; | |
1303 | h.var = Qnil; | |
db9f0278 JB |
1304 | h.next = handlerlist; |
1305 | h.tag = &c; | |
1306 | handlerlist = &h; | |
1307 | ||
1308 | val = (*bfun) (); | |
1309 | catchlist = c.next; | |
1310 | handlerlist = h.next; | |
1311 | return val; | |
1312 | } | |
1313 | ||
2659a09f | 1314 | /* Like internal_condition_case but call BFUN with ARG as its argument. */ |
f029ca5f | 1315 | |
d227775c | 1316 | Lisp_Object |
d3da34e0 JB |
1317 | internal_condition_case_1 (Lisp_Object (*bfun) (Lisp_Object), Lisp_Object arg, |
1318 | Lisp_Object handlers, Lisp_Object (*hfun) (Lisp_Object)) | |
d227775c RS |
1319 | { |
1320 | Lisp_Object val; | |
1321 | struct catchtag c; | |
1322 | struct handler h; | |
1323 | ||
1324 | c.tag = Qnil; | |
1325 | c.val = Qnil; | |
1326 | c.backlist = backtrace_list; | |
1327 | c.handlerlist = handlerlist; | |
1328 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1329 | c.pdlcount = SPECPDL_INDEX (); |
d227775c | 1330 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1331 | c.interrupt_input_blocked = interrupt_input_blocked; |
d227775c | 1332 | c.gcpro = gcprolist; |
bcf28080 | 1333 | c.byte_stack = byte_stack_list; |
0328b6de | 1334 | if (sys_setjmp (c.jmp)) |
d227775c | 1335 | { |
9d58218c | 1336 | return (*hfun) (c.val); |
d227775c RS |
1337 | } |
1338 | c.next = catchlist; | |
1339 | catchlist = &c; | |
1340 | h.handler = handlers; | |
1341 | h.var = Qnil; | |
1342 | h.next = handlerlist; | |
1343 | h.tag = &c; | |
1344 | handlerlist = &h; | |
1345 | ||
1346 | val = (*bfun) (arg); | |
1347 | catchlist = c.next; | |
1348 | handlerlist = h.next; | |
1349 | return val; | |
1350 | } | |
10b29d41 | 1351 | |
53967e09 CY |
1352 | /* Like internal_condition_case_1 but call BFUN with ARG1 and ARG2 as |
1353 | its arguments. */ | |
1354 | ||
1355 | Lisp_Object | |
178f2507 SM |
1356 | internal_condition_case_2 (Lisp_Object (*bfun) (Lisp_Object, Lisp_Object), |
1357 | Lisp_Object arg1, | |
1358 | Lisp_Object arg2, | |
1359 | Lisp_Object handlers, | |
1360 | Lisp_Object (*hfun) (Lisp_Object)) | |
53967e09 CY |
1361 | { |
1362 | Lisp_Object val; | |
1363 | struct catchtag c; | |
1364 | struct handler h; | |
1365 | ||
53967e09 CY |
1366 | c.tag = Qnil; |
1367 | c.val = Qnil; | |
1368 | c.backlist = backtrace_list; | |
1369 | c.handlerlist = handlerlist; | |
1370 | c.lisp_eval_depth = lisp_eval_depth; | |
1371 | c.pdlcount = SPECPDL_INDEX (); | |
1372 | c.poll_suppress_count = poll_suppress_count; | |
1373 | c.interrupt_input_blocked = interrupt_input_blocked; | |
1374 | c.gcpro = gcprolist; | |
1375 | c.byte_stack = byte_stack_list; | |
0328b6de | 1376 | if (sys_setjmp (c.jmp)) |
53967e09 CY |
1377 | { |
1378 | return (*hfun) (c.val); | |
1379 | } | |
1380 | c.next = catchlist; | |
1381 | catchlist = &c; | |
1382 | h.handler = handlers; | |
1383 | h.var = Qnil; | |
1384 | h.next = handlerlist; | |
1385 | h.tag = &c; | |
1386 | handlerlist = &h; | |
1387 | ||
1388 | val = (*bfun) (arg1, arg2); | |
1389 | catchlist = c.next; | |
1390 | handlerlist = h.next; | |
1391 | return val; | |
1392 | } | |
10b29d41 | 1393 | |
2659a09f | 1394 | /* Like internal_condition_case but call BFUN with NARGS as first, |
10b29d41 GM |
1395 | and ARGS as second argument. */ |
1396 | ||
1397 | Lisp_Object | |
f66c7cf8 PE |
1398 | internal_condition_case_n (Lisp_Object (*bfun) (ptrdiff_t, Lisp_Object *), |
1399 | ptrdiff_t nargs, | |
178f2507 SM |
1400 | Lisp_Object *args, |
1401 | Lisp_Object handlers, | |
cc92c454 SM |
1402 | Lisp_Object (*hfun) (Lisp_Object err, |
1403 | ptrdiff_t nargs, | |
1404 | Lisp_Object *args)) | |
10b29d41 GM |
1405 | { |
1406 | Lisp_Object val; | |
1407 | struct catchtag c; | |
1408 | struct handler h; | |
1409 | ||
1410 | c.tag = Qnil; | |
1411 | c.val = Qnil; | |
1412 | c.backlist = backtrace_list; | |
1413 | c.handlerlist = handlerlist; | |
1414 | c.lisp_eval_depth = lisp_eval_depth; | |
aed13378 | 1415 | c.pdlcount = SPECPDL_INDEX (); |
10b29d41 | 1416 | c.poll_suppress_count = poll_suppress_count; |
2659a09f | 1417 | c.interrupt_input_blocked = interrupt_input_blocked; |
10b29d41 GM |
1418 | c.gcpro = gcprolist; |
1419 | c.byte_stack = byte_stack_list; | |
0328b6de | 1420 | if (sys_setjmp (c.jmp)) |
10b29d41 | 1421 | { |
cc92c454 | 1422 | return (*hfun) (c.val, nargs, args); |
10b29d41 GM |
1423 | } |
1424 | c.next = catchlist; | |
1425 | catchlist = &c; | |
1426 | h.handler = handlers; | |
1427 | h.var = Qnil; | |
1428 | h.next = handlerlist; | |
1429 | h.tag = &c; | |
1430 | handlerlist = &h; | |
1431 | ||
1432 | val = (*bfun) (nargs, args); | |
1433 | catchlist = c.next; | |
1434 | handlerlist = h.next; | |
1435 | return val; | |
1436 | } | |
1437 | ||
d227775c | 1438 | \f |
7d47b580 | 1439 | static Lisp_Object find_handler_clause (Lisp_Object, Lisp_Object); |
1882aa38 PE |
1440 | static bool maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig, |
1441 | Lisp_Object data); | |
db9f0278 | 1442 | |
6d5eb5b0 SM |
1443 | void |
1444 | process_quit_flag (void) | |
1445 | { | |
1446 | Lisp_Object flag = Vquit_flag; | |
1447 | Vquit_flag = Qnil; | |
1448 | if (EQ (flag, Qkill_emacs)) | |
1449 | Fkill_emacs (Qnil); | |
1450 | if (EQ (Vthrow_on_input, flag)) | |
1451 | Fthrow (Vthrow_on_input, Qt); | |
1452 | Fsignal (Qquit, Qnil); | |
1453 | } | |
1454 | ||
a7ca3326 | 1455 | DEFUN ("signal", Fsignal, Ssignal, 2, 2, 0, |
9dbc9081 PJ |
1456 | doc: /* Signal an error. Args are ERROR-SYMBOL and associated DATA. |
1457 | This function does not return. | |
1458 | ||
1459 | An error symbol is a symbol with an `error-conditions' property | |
1460 | that is a list of condition names. | |
1461 | A handler for any of those names will get to handle this signal. | |
1462 | The symbol `error' should normally be one of them. | |
1463 | ||
1464 | DATA should be a list. Its elements are printed as part of the error message. | |
3297ec22 LT |
1465 | See Info anchor `(elisp)Definition of signal' for some details on how this |
1466 | error message is constructed. | |
9dbc9081 PJ |
1467 | If the signal is handled, DATA is made available to the handler. |
1468 | See also the function `condition-case'. */) | |
5842a27b | 1469 | (Lisp_Object error_symbol, Lisp_Object data) |
db9f0278 | 1470 | { |
bfa8ca43 | 1471 | /* When memory is full, ERROR-SYMBOL is nil, |
26631f2b RS |
1472 | and DATA is (REAL-ERROR-SYMBOL . REAL-DATA). |
1473 | That is a special case--don't do this in other situations. */ | |
db9f0278 | 1474 | Lisp_Object conditions; |
c11d3d17 | 1475 | Lisp_Object string; |
e7f7fbaa SM |
1476 | Lisp_Object real_error_symbol |
1477 | = (NILP (error_symbol) ? Fcar (data) : error_symbol); | |
1478 | register Lisp_Object clause = Qnil; | |
1479 | struct handler *h; | |
a2ff3819 | 1480 | struct backtrace *bp; |
db9f0278 | 1481 | |
0caaedb1 | 1482 | immediate_quit = 0; |
d063129f | 1483 | abort_on_gc = 0; |
db9f0278 | 1484 | if (gc_in_progress || waiting_for_input) |
1088b922 | 1485 | emacs_abort (); |
db9f0278 | 1486 | |
26631f2b RS |
1487 | #if 0 /* rms: I don't know why this was here, |
1488 | but it is surely wrong for an error that is handled. */ | |
d148e14d | 1489 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
1490 | if (display_hourglass_p) |
1491 | cancel_hourglass (); | |
48f8dfa3 | 1492 | #endif |
177c0ea7 | 1493 | #endif |
48f8dfa3 | 1494 | |
61ede770 | 1495 | /* This hook is used by edebug. */ |
26631f2b RS |
1496 | if (! NILP (Vsignal_hook_function) |
1497 | && ! NILP (error_symbol)) | |
9f5903bb RS |
1498 | { |
1499 | /* Edebug takes care of restoring these variables when it exits. */ | |
1500 | if (lisp_eval_depth + 20 > max_lisp_eval_depth) | |
1501 | max_lisp_eval_depth = lisp_eval_depth + 20; | |
1502 | ||
1503 | if (SPECPDL_INDEX () + 40 > max_specpdl_size) | |
1504 | max_specpdl_size = SPECPDL_INDEX () + 40; | |
1505 | ||
1506 | call2 (Vsignal_hook_function, error_symbol, data); | |
1507 | } | |
61ede770 | 1508 | |
1ea9dec4 | 1509 | conditions = Fget (real_error_symbol, Qerror_conditions); |
db9f0278 | 1510 | |
a2ff3819 GM |
1511 | /* Remember from where signal was called. Skip over the frame for |
1512 | `signal' itself. If a frame for `error' follows, skip that, | |
26631f2b RS |
1513 | too. Don't do this when ERROR_SYMBOL is nil, because that |
1514 | is a memory-full error. */ | |
090a072f | 1515 | Vsignaling_function = Qnil; |
26631f2b | 1516 | if (backtrace_list && !NILP (error_symbol)) |
090a072f GM |
1517 | { |
1518 | bp = backtrace_list->next; | |
1519 | if (bp && bp->function && EQ (*bp->function, Qerror)) | |
1520 | bp = bp->next; | |
1521 | if (bp && bp->function) | |
1522 | Vsignaling_function = *bp->function; | |
1523 | } | |
a2ff3819 | 1524 | |
e7f7fbaa | 1525 | for (h = handlerlist; h; h = h->next) |
db9f0278 | 1526 | { |
7d47b580 | 1527 | clause = find_handler_clause (h->handler, conditions); |
265a9e55 | 1528 | if (!NILP (clause)) |
e7f7fbaa | 1529 | break; |
db9f0278 | 1530 | } |
475545b5 | 1531 | |
e7f7fbaa SM |
1532 | if (/* Don't run the debugger for a memory-full error. |
1533 | (There is no room in memory to do that!) */ | |
1534 | !NILP (error_symbol) | |
1535 | && (!NILP (Vdebug_on_signal) | |
1536 | /* If no handler is present now, try to run the debugger. */ | |
1537 | || NILP (clause) | |
bd1ba3e8 CY |
1538 | /* A `debug' symbol in the handler list disables the normal |
1539 | suppression of the debugger. */ | |
1540 | || (CONSP (clause) && CONSP (XCAR (clause)) | |
1541 | && !NILP (Fmemq (Qdebug, XCAR (clause)))) | |
e7f7fbaa SM |
1542 | /* Special handler that means "print a message and run debugger |
1543 | if requested". */ | |
1544 | || EQ (h->handler, Qerror))) | |
1545 | { | |
1882aa38 | 1546 | bool debugger_called |
e7f7fbaa SM |
1547 | = maybe_call_debugger (conditions, error_symbol, data); |
1548 | /* We can't return values to code which signaled an error, but we | |
1549 | can continue code which has signaled a quit. */ | |
1550 | if (debugger_called && EQ (real_error_symbol, Qquit)) | |
1551 | return Qnil; | |
475545b5 | 1552 | } |
db9f0278 | 1553 | |
e7f7fbaa SM |
1554 | if (!NILP (clause)) |
1555 | { | |
1556 | Lisp_Object unwind_data | |
1557 | = (NILP (error_symbol) ? data : Fcons (error_symbol, data)); | |
475545b5 | 1558 | |
e7f7fbaa SM |
1559 | h->chosen_clause = clause; |
1560 | unwind_to_catch (h->tag, unwind_data); | |
1561 | } | |
1562 | else | |
1563 | { | |
1564 | if (catchlist != 0) | |
1565 | Fthrow (Qtop_level, Qt); | |
1566 | } | |
c11d3d17 | 1567 | |
1ea9dec4 | 1568 | if (! NILP (error_symbol)) |
c11d3d17 | 1569 | data = Fcons (error_symbol, data); |
475545b5 | 1570 | |
c11d3d17 | 1571 | string = Ferror_message_string (data); |
583f48b9 | 1572 | fatal ("%s", SDATA (string)); |
db9f0278 JB |
1573 | } |
1574 | ||
734d55a2 KS |
1575 | /* Internal version of Fsignal that never returns. |
1576 | Used for anything but Qquit (which can return from Fsignal). */ | |
1577 | ||
1578 | void | |
d3da34e0 | 1579 | xsignal (Lisp_Object error_symbol, Lisp_Object data) |
734d55a2 KS |
1580 | { |
1581 | Fsignal (error_symbol, data); | |
1088b922 | 1582 | emacs_abort (); |
734d55a2 KS |
1583 | } |
1584 | ||
1585 | /* Like xsignal, but takes 0, 1, 2, or 3 args instead of a list. */ | |
1586 | ||
1587 | void | |
d3da34e0 | 1588 | xsignal0 (Lisp_Object error_symbol) |
734d55a2 KS |
1589 | { |
1590 | xsignal (error_symbol, Qnil); | |
1591 | } | |
1592 | ||
1593 | void | |
d3da34e0 | 1594 | xsignal1 (Lisp_Object error_symbol, Lisp_Object arg) |
734d55a2 KS |
1595 | { |
1596 | xsignal (error_symbol, list1 (arg)); | |
1597 | } | |
1598 | ||
1599 | void | |
d3da34e0 | 1600 | xsignal2 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2) |
734d55a2 KS |
1601 | { |
1602 | xsignal (error_symbol, list2 (arg1, arg2)); | |
1603 | } | |
1604 | ||
1605 | void | |
d3da34e0 | 1606 | xsignal3 (Lisp_Object error_symbol, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
734d55a2 KS |
1607 | { |
1608 | xsignal (error_symbol, list3 (arg1, arg2, arg3)); | |
1609 | } | |
1610 | ||
1611 | /* Signal `error' with message S, and additional arg ARG. | |
1612 | If ARG is not a genuine list, make it a one-element list. */ | |
1613 | ||
1614 | void | |
a8fe7202 | 1615 | signal_error (const char *s, Lisp_Object arg) |
734d55a2 KS |
1616 | { |
1617 | Lisp_Object tortoise, hare; | |
1618 | ||
1619 | hare = tortoise = arg; | |
1620 | while (CONSP (hare)) | |
1621 | { | |
1622 | hare = XCDR (hare); | |
1623 | if (!CONSP (hare)) | |
1624 | break; | |
1625 | ||
1626 | hare = XCDR (hare); | |
1627 | tortoise = XCDR (tortoise); | |
1628 | ||
1629 | if (EQ (hare, tortoise)) | |
1630 | break; | |
1631 | } | |
1632 | ||
1633 | if (!NILP (hare)) | |
1634 | arg = Fcons (arg, Qnil); /* Make it a list. */ | |
1635 | ||
1636 | xsignal (Qerror, Fcons (build_string (s), arg)); | |
1637 | } | |
1638 | ||
1639 | ||
1882aa38 | 1640 | /* Return true if LIST is a non-nil atom or |
128c0f66 RM |
1641 | a list containing one of CONDITIONS. */ |
1642 | ||
1882aa38 | 1643 | static bool |
d3da34e0 | 1644 | wants_debugger (Lisp_Object list, Lisp_Object conditions) |
128c0f66 | 1645 | { |
4de86b16 | 1646 | if (NILP (list)) |
128c0f66 RM |
1647 | return 0; |
1648 | if (! CONSP (list)) | |
1649 | return 1; | |
1650 | ||
ab67260b | 1651 | while (CONSP (conditions)) |
128c0f66 | 1652 | { |
ab67260b | 1653 | Lisp_Object this, tail; |
03699b14 KR |
1654 | this = XCAR (conditions); |
1655 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
1656 | if (EQ (XCAR (tail), this)) | |
128c0f66 | 1657 | return 1; |
03699b14 | 1658 | conditions = XCDR (conditions); |
128c0f66 | 1659 | } |
ab67260b | 1660 | return 0; |
128c0f66 RM |
1661 | } |
1662 | ||
1882aa38 | 1663 | /* Return true if an error with condition-symbols CONDITIONS, |
fc950e09 | 1664 | and described by SIGNAL-DATA, should skip the debugger |
1b1acc13 | 1665 | according to debugger-ignored-errors. */ |
fc950e09 | 1666 | |
1882aa38 | 1667 | static bool |
d3da34e0 | 1668 | skip_debugger (Lisp_Object conditions, Lisp_Object data) |
fc950e09 KH |
1669 | { |
1670 | Lisp_Object tail; | |
1882aa38 | 1671 | bool first_string = 1; |
fc950e09 KH |
1672 | Lisp_Object error_message; |
1673 | ||
17401c97 GM |
1674 | error_message = Qnil; |
1675 | for (tail = Vdebug_ignored_errors; CONSP (tail); tail = XCDR (tail)) | |
fc950e09 | 1676 | { |
03699b14 | 1677 | if (STRINGP (XCAR (tail))) |
fc950e09 KH |
1678 | { |
1679 | if (first_string) | |
1680 | { | |
1681 | error_message = Ferror_message_string (data); | |
1682 | first_string = 0; | |
1683 | } | |
177c0ea7 | 1684 | |
03699b14 | 1685 | if (fast_string_match (XCAR (tail), error_message) >= 0) |
fc950e09 KH |
1686 | return 1; |
1687 | } | |
1688 | else | |
1689 | { | |
1690 | Lisp_Object contail; | |
1691 | ||
17401c97 | 1692 | for (contail = conditions; CONSP (contail); contail = XCDR (contail)) |
03699b14 | 1693 | if (EQ (XCAR (tail), XCAR (contail))) |
fc950e09 KH |
1694 | return 1; |
1695 | } | |
1696 | } | |
1697 | ||
1698 | return 0; | |
1699 | } | |
1700 | ||
ddaa36e1 | 1701 | /* Call the debugger if calling it is currently enabled for CONDITIONS. |
7d47b580 JB |
1702 | SIG and DATA describe the signal. There are two ways to pass them: |
1703 | = SIG is the error symbol, and DATA is the rest of the data. | |
1704 | = SIG is nil, and DATA is (SYMBOL . REST-OF-DATA). | |
1705 | This is for memory-full errors only. */ | |
1882aa38 | 1706 | static bool |
d3da34e0 | 1707 | maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig, Lisp_Object data) |
ddaa36e1 AS |
1708 | { |
1709 | Lisp_Object combined_data; | |
1710 | ||
1711 | combined_data = Fcons (sig, data); | |
1712 | ||
1713 | if ( | |
1714 | /* Don't try to run the debugger with interrupts blocked. | |
1715 | The editing loop would return anyway. */ | |
1716 | ! INPUT_BLOCKED_P | |
45b82ad0 | 1717 | && NILP (Vinhibit_debugger) |
ddaa36e1 AS |
1718 | /* Does user want to enter debugger for this kind of error? */ |
1719 | && (EQ (sig, Qquit) | |
1720 | ? debug_on_quit | |
1721 | : wants_debugger (Vdebug_on_error, conditions)) | |
1722 | && ! skip_debugger (conditions, combined_data) | |
f6d62986 | 1723 | /* RMS: What's this for? */ |
ddaa36e1 AS |
1724 | && when_entered_debugger < num_nonmacro_input_events) |
1725 | { | |
1726 | call_debugger (Fcons (Qerror, Fcons (combined_data, Qnil))); | |
1727 | return 1; | |
1728 | } | |
1729 | ||
1730 | return 0; | |
1731 | } | |
1732 | ||
db9f0278 | 1733 | static Lisp_Object |
7d47b580 | 1734 | find_handler_clause (Lisp_Object handlers, Lisp_Object conditions) |
db9f0278 JB |
1735 | { |
1736 | register Lisp_Object h; | |
db9f0278 | 1737 | |
f01cbfdd RS |
1738 | /* t is used by handlers for all conditions, set up by C code. */ |
1739 | if (EQ (handlers, Qt)) | |
db9f0278 | 1740 | return Qt; |
f01cbfdd | 1741 | |
61ede770 RS |
1742 | /* error is used similarly, but means print an error message |
1743 | and run the debugger if that is enabled. */ | |
e7f7fbaa SM |
1744 | if (EQ (handlers, Qerror)) |
1745 | return Qt; | |
f01cbfdd | 1746 | |
e7f7fbaa | 1747 | for (h = handlers; CONSP (h); h = XCDR (h)) |
db9f0278 | 1748 | { |
e7f7fbaa SM |
1749 | Lisp_Object handler = XCAR (h); |
1750 | Lisp_Object condit, tem; | |
5f96776a | 1751 | |
5f96776a | 1752 | if (!CONSP (handler)) |
db9f0278 | 1753 | continue; |
e7f7fbaa | 1754 | condit = XCAR (handler); |
5f96776a RS |
1755 | /* Handle a single condition name in handler HANDLER. */ |
1756 | if (SYMBOLP (condit)) | |
1757 | { | |
1758 | tem = Fmemq (Fcar (handler), conditions); | |
1759 | if (!NILP (tem)) | |
1760 | return handler; | |
1761 | } | |
1762 | /* Handle a list of condition names in handler HANDLER. */ | |
1763 | else if (CONSP (condit)) | |
1764 | { | |
f01cbfdd RS |
1765 | Lisp_Object tail; |
1766 | for (tail = condit; CONSP (tail); tail = XCDR (tail)) | |
5f96776a | 1767 | { |
e7f7fbaa | 1768 | tem = Fmemq (XCAR (tail), conditions); |
5f96776a | 1769 | if (!NILP (tem)) |
e7f7fbaa | 1770 | return handler; |
5f96776a RS |
1771 | } |
1772 | } | |
db9f0278 | 1773 | } |
f01cbfdd | 1774 | |
db9f0278 JB |
1775 | return Qnil; |
1776 | } | |
1777 | ||
db9f0278 | 1778 | |
f6d62986 | 1779 | /* Dump an error message; called like vprintf. */ |
db9f0278 | 1780 | void |
b3ffc17c | 1781 | verror (const char *m, va_list ap) |
db9f0278 | 1782 | { |
70476b54 | 1783 | char buf[4000]; |
c2d1e36d PE |
1784 | ptrdiff_t size = sizeof buf; |
1785 | ptrdiff_t size_max = STRING_BYTES_BOUND + 1; | |
9125da08 | 1786 | char *buffer = buf; |
c2d1e36d | 1787 | ptrdiff_t used; |
9125da08 RS |
1788 | Lisp_Object string; |
1789 | ||
d749b01b | 1790 | used = evxprintf (&buffer, &size, buf, size_max, m, ap); |
5fdb398c | 1791 | string = make_string (buffer, used); |
eb3f1cc8 | 1792 | if (buffer != buf) |
9ae6734f | 1793 | xfree (buffer); |
9125da08 | 1794 | |
734d55a2 | 1795 | xsignal1 (Qerror, string); |
db9f0278 | 1796 | } |
b3ffc17c DN |
1797 | |
1798 | ||
f6d62986 | 1799 | /* Dump an error message; called like printf. */ |
b3ffc17c DN |
1800 | |
1801 | /* VARARGS 1 */ | |
1802 | void | |
1803 | error (const char *m, ...) | |
1804 | { | |
1805 | va_list ap; | |
1806 | va_start (ap, m); | |
1807 | verror (m, ap); | |
1808 | va_end (ap); | |
1809 | } | |
db9f0278 | 1810 | \f |
a7ca3326 | 1811 | DEFUN ("commandp", Fcommandp, Scommandp, 1, 2, 0, |
9dbc9081 PJ |
1812 | doc: /* Non-nil if FUNCTION makes provisions for interactive calling. |
1813 | This means it contains a description for how to read arguments to give it. | |
1814 | The value is nil for an invalid function or a symbol with no function | |
1815 | definition. | |
1816 | ||
1817 | Interactively callable functions include strings and vectors (treated | |
1818 | as keyboard macros), lambda-expressions that contain a top-level call | |
1819 | to `interactive', autoload definitions made by `autoload' with non-nil | |
1820 | fourth argument, and some of the built-in functions of Lisp. | |
1821 | ||
e72706be RS |
1822 | Also, a symbol satisfies `commandp' if its function definition does so. |
1823 | ||
1824 | If the optional argument FOR-CALL-INTERACTIVELY is non-nil, | |
769b4fb2 | 1825 | then strings and vectors are not accepted. */) |
5842a27b | 1826 | (Lisp_Object function, Lisp_Object for_call_interactively) |
db9f0278 JB |
1827 | { |
1828 | register Lisp_Object fun; | |
1829 | register Lisp_Object funcar; | |
52b71f49 | 1830 | Lisp_Object if_prop = Qnil; |
db9f0278 JB |
1831 | |
1832 | fun = function; | |
1833 | ||
52b71f49 SM |
1834 | fun = indirect_function (fun); /* Check cycles. */ |
1835 | if (NILP (fun) || EQ (fun, Qunbound)) | |
ffd56f97 | 1836 | return Qnil; |
db9f0278 | 1837 | |
52b71f49 SM |
1838 | /* Check an `interactive-form' property if present, analogous to the |
1839 | function-documentation property. */ | |
1840 | fun = function; | |
1841 | while (SYMBOLP (fun)) | |
1842 | { | |
2b9aa051 | 1843 | Lisp_Object tmp = Fget (fun, Qinteractive_form); |
52b71f49 SM |
1844 | if (!NILP (tmp)) |
1845 | if_prop = Qt; | |
1846 | fun = Fsymbol_function (fun); | |
1847 | } | |
1848 | ||
db9f0278 JB |
1849 | /* Emacs primitives are interactive if their DEFUN specifies an |
1850 | interactive spec. */ | |
90165123 | 1851 | if (SUBRP (fun)) |
04724b69 | 1852 | return XSUBR (fun)->intspec ? Qt : if_prop; |
db9f0278 JB |
1853 | |
1854 | /* Bytecode objects are interactive if they are long enough to | |
1855 | have an element whose index is COMPILED_INTERACTIVE, which is | |
1856 | where the interactive spec is stored. */ | |
90165123 | 1857 | else if (COMPILEDP (fun)) |
845975f5 | 1858 | return ((ASIZE (fun) & PSEUDOVECTOR_SIZE_MASK) > COMPILED_INTERACTIVE |
52b71f49 | 1859 | ? Qt : if_prop); |
db9f0278 JB |
1860 | |
1861 | /* Strings and vectors are keyboard macros. */ | |
52b71f49 | 1862 | if (STRINGP (fun) || VECTORP (fun)) |
6e33efc4 | 1863 | return (NILP (for_call_interactively) ? Qt : Qnil); |
db9f0278 JB |
1864 | |
1865 | /* Lists may represent commands. */ | |
1866 | if (!CONSP (fun)) | |
1867 | return Qnil; | |
ed16fb98 | 1868 | funcar = XCAR (fun); |
b38b1ec0 | 1869 | if (EQ (funcar, Qclosure)) |
7200d79c SM |
1870 | return (!NILP (Fassq (Qinteractive, Fcdr (Fcdr (XCDR (fun))))) |
1871 | ? Qt : if_prop); | |
23aba0ea | 1872 | else if (EQ (funcar, Qlambda)) |
52b71f49 | 1873 | return !NILP (Fassq (Qinteractive, Fcdr (XCDR (fun)))) ? Qt : if_prop; |
b38b1ec0 | 1874 | else if (EQ (funcar, Qautoload)) |
52b71f49 | 1875 | return !NILP (Fcar (Fcdr (Fcdr (XCDR (fun))))) ? Qt : if_prop; |
db9f0278 JB |
1876 | else |
1877 | return Qnil; | |
1878 | } | |
1879 | ||
db9f0278 | 1880 | DEFUN ("autoload", Fautoload, Sautoload, 2, 5, 0, |
9dbc9081 PJ |
1881 | doc: /* Define FUNCTION to autoload from FILE. |
1882 | FUNCTION is a symbol; FILE is a file name string to pass to `load'. | |
1883 | Third arg DOCSTRING is documentation for the function. | |
1884 | Fourth arg INTERACTIVE if non-nil says function can be called interactively. | |
1885 | Fifth arg TYPE indicates the type of the object: | |
1886 | nil or omitted says FUNCTION is a function, | |
1887 | `keymap' says FUNCTION is really a keymap, and | |
1888 | `macro' or t says FUNCTION is really a macro. | |
1889 | Third through fifth args give info about the real definition. | |
1890 | They default to nil. | |
1891 | If FUNCTION is already defined other than as an autoload, | |
1892 | this does nothing and returns nil. */) | |
5842a27b | 1893 | (Lisp_Object function, Lisp_Object file, Lisp_Object docstring, Lisp_Object interactive, Lisp_Object type) |
db9f0278 | 1894 | { |
b7826503 PJ |
1895 | CHECK_SYMBOL (function); |
1896 | CHECK_STRING (file); | |
db9f0278 | 1897 | |
f6d62986 | 1898 | /* If function is defined and not as an autoload, don't override. */ |
c644523b DA |
1899 | if (!EQ (XSYMBOL (function)->function, Qunbound) |
1900 | && !(CONSP (XSYMBOL (function)->function) | |
1901 | && EQ (XCAR (XSYMBOL (function)->function), Qautoload))) | |
db9f0278 JB |
1902 | return Qnil; |
1903 | ||
7973e637 SM |
1904 | if (NILP (Vpurify_flag)) |
1905 | /* Only add entries after dumping, because the ones before are | |
1906 | not useful and else we get loads of them from the loaddefs.el. */ | |
1907 | LOADHIST_ATTACH (Fcons (Qautoload, function)); | |
61b108cc SM |
1908 | else if (EQ (docstring, make_number (0))) |
1909 | /* `read1' in lread.c has found the docstring starting with "\ | |
1910 | and assumed the docstring will be provided by Snarf-documentation, so it | |
1911 | passed us 0 instead. But that leads to accidental sharing in purecopy's | |
1912 | hash-consing, so we use a (hopefully) unique integer instead. */ | |
b263a6b0 | 1913 | docstring = make_number (XUNTAG (function, Lisp_Symbol)); |
a56eaaef DN |
1914 | return Ffset (function, |
1915 | Fpurecopy (list5 (Qautoload, file, docstring, | |
1916 | interactive, type))); | |
db9f0278 JB |
1917 | } |
1918 | ||
1919 | Lisp_Object | |
d3da34e0 | 1920 | un_autoload (Lisp_Object oldqueue) |
db9f0278 JB |
1921 | { |
1922 | register Lisp_Object queue, first, second; | |
1923 | ||
1924 | /* Queue to unwind is current value of Vautoload_queue. | |
1925 | oldqueue is the shadowed value to leave in Vautoload_queue. */ | |
1926 | queue = Vautoload_queue; | |
1927 | Vautoload_queue = oldqueue; | |
1928 | while (CONSP (queue)) | |
1929 | { | |
e509f168 | 1930 | first = XCAR (queue); |
db9f0278 JB |
1931 | second = Fcdr (first); |
1932 | first = Fcar (first); | |
47b82df9 RS |
1933 | if (EQ (first, make_number (0))) |
1934 | Vfeatures = second; | |
db9f0278 JB |
1935 | else |
1936 | Ffset (first, second); | |
e509f168 | 1937 | queue = XCDR (queue); |
db9f0278 JB |
1938 | } |
1939 | return Qnil; | |
1940 | } | |
1941 | ||
ca20916b RS |
1942 | /* Load an autoloaded function. |
1943 | FUNNAME is the symbol which is the function's name. | |
1944 | FUNDEF is the autoload definition (a list). */ | |
1945 | ||
7abaf5cc SM |
1946 | DEFUN ("autoload-do-load", Fautoload_do_load, Sautoload_do_load, 1, 3, 0, |
1947 | doc: /* Load FUNDEF which should be an autoload. | |
1948 | If non-nil, FUNNAME should be the symbol whose function value is FUNDEF, | |
1949 | in which case the function returns the new autoloaded function value. | |
1950 | If equal to `macro', MACRO-ONLY specifies that FUNDEF should only be loaded if | |
1951 | it is defines a macro. */) | |
1952 | (Lisp_Object fundef, Lisp_Object funname, Lisp_Object macro_only) | |
db9f0278 | 1953 | { |
d311d28c | 1954 | ptrdiff_t count = SPECPDL_INDEX (); |
ca20916b | 1955 | struct gcpro gcpro1, gcpro2, gcpro3; |
db9f0278 | 1956 | |
7abaf5cc SM |
1957 | if (!CONSP (fundef) || !EQ (Qautoload, XCAR (fundef))) |
1958 | return fundef; | |
1959 | ||
1960 | if (EQ (macro_only, Qmacro)) | |
1961 | { | |
1962 | Lisp_Object kind = Fnth (make_number (4), fundef); | |
1963 | if (! (EQ (kind, Qt) || EQ (kind, Qmacro))) | |
1964 | return fundef; | |
1965 | } | |
1966 | ||
aea6173f RS |
1967 | /* This is to make sure that loadup.el gives a clear picture |
1968 | of what files are preloaded and when. */ | |
ab4db096 RS |
1969 | if (! NILP (Vpurify_flag)) |
1970 | error ("Attempt to autoload %s while preparing to dump", | |
d5db4077 | 1971 | SDATA (SYMBOL_NAME (funname))); |
ab4db096 | 1972 | |
b7826503 | 1973 | CHECK_SYMBOL (funname); |
7abaf5cc | 1974 | GCPRO3 (funname, fundef, macro_only); |
db9f0278 | 1975 | |
f87740dc | 1976 | /* Preserve the match data. */ |
89f2614d | 1977 | record_unwind_save_match_data (); |
177c0ea7 | 1978 | |
a04ee161 RS |
1979 | /* If autoloading gets an error (which includes the error of failing |
1980 | to define the function being called), we use Vautoload_queue | |
1981 | to undo function definitions and `provide' calls made by | |
1982 | the function. We do this in the specific case of autoloading | |
1983 | because autoloading is not an explicit request "load this file", | |
1984 | but rather a request to "call this function". | |
d3da34e0 | 1985 | |
a04ee161 | 1986 | The value saved here is to be restored into Vautoload_queue. */ |
db9f0278 JB |
1987 | record_unwind_protect (un_autoload, Vautoload_queue); |
1988 | Vautoload_queue = Qt; | |
7abaf5cc SM |
1989 | /* If `macro_only', assume this autoload to be a "best-effort", |
1990 | so don't signal an error if autoloading fails. */ | |
1991 | Fload (Fcar (Fcdr (fundef)), macro_only, Qt, Qnil, Qt); | |
2a49b6e5 | 1992 | |
db9f0278 JB |
1993 | /* Once loading finishes, don't undo it. */ |
1994 | Vautoload_queue = Qt; | |
1995 | unbind_to (count, Qnil); | |
1996 | ||
ca20916b | 1997 | UNGCPRO; |
7abaf5cc SM |
1998 | |
1999 | if (NILP (funname)) | |
2000 | return Qnil; | |
2001 | else | |
2002 | { | |
2003 | Lisp_Object fun = Findirect_function (funname, Qnil); | |
2004 | ||
2005 | if (!NILP (Fequal (fun, fundef))) | |
2006 | error ("Autoloading failed to define function %s", | |
2007 | SDATA (SYMBOL_NAME (funname))); | |
2008 | else | |
2009 | return fun; | |
2010 | } | |
db9f0278 | 2011 | } |
4c576a83 | 2012 | |
db9f0278 | 2013 | \f |
a7ca3326 | 2014 | DEFUN ("eval", Feval, Seval, 1, 2, 0, |
a0ee6f27 SM |
2015 | doc: /* Evaluate FORM and return its value. |
2016 | If LEXICAL is t, evaluate using lexical scoping. */) | |
2017 | (Lisp_Object form, Lisp_Object lexical) | |
defb1411 | 2018 | { |
d311d28c | 2019 | ptrdiff_t count = SPECPDL_INDEX (); |
a0ee6f27 SM |
2020 | specbind (Qinternal_interpreter_environment, |
2021 | NILP (lexical) ? Qnil : Fcons (Qt, Qnil)); | |
defb1411 SM |
2022 | return unbind_to (count, eval_sub (form)); |
2023 | } | |
2024 | ||
2025 | /* Eval a sub-expression of the current expression (i.e. in the same | |
2026 | lexical scope). */ | |
2027 | Lisp_Object | |
2028 | eval_sub (Lisp_Object form) | |
db9f0278 JB |
2029 | { |
2030 | Lisp_Object fun, val, original_fun, original_args; | |
2031 | Lisp_Object funcar; | |
2032 | struct backtrace backtrace; | |
2033 | struct gcpro gcpro1, gcpro2, gcpro3; | |
2034 | ||
90165123 | 2035 | if (SYMBOLP (form)) |
b9598260 | 2036 | { |
f07a954e SM |
2037 | /* Look up its binding in the lexical environment. |
2038 | We do not pay attention to the declared_special flag here, since we | |
2039 | already did that when let-binding the variable. */ | |
2040 | Lisp_Object lex_binding | |
2041 | = !NILP (Vinternal_interpreter_environment) /* Mere optimization! */ | |
2042 | ? Fassq (form, Vinternal_interpreter_environment) | |
2043 | : Qnil; | |
2044 | if (CONSP (lex_binding)) | |
2045 | return XCDR (lex_binding); | |
2046 | else | |
2047 | return Fsymbol_value (form); | |
b9598260 SM |
2048 | } |
2049 | ||
db9f0278 JB |
2050 | if (!CONSP (form)) |
2051 | return form; | |
2052 | ||
2053 | QUIT; | |
765e61e3 | 2054 | maybe_gc (); |
db9f0278 JB |
2055 | |
2056 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2057 | { | |
2058 | if (max_lisp_eval_depth < 100) | |
2059 | max_lisp_eval_depth = 100; | |
2060 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2061 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2062 | } |
2063 | ||
7d7bbefd DA |
2064 | original_fun = XCAR (form); |
2065 | original_args = XCDR (form); | |
db9f0278 JB |
2066 | |
2067 | backtrace.next = backtrace_list; | |
2068 | backtrace_list = &backtrace; | |
f6d62986 | 2069 | backtrace.function = &original_fun; /* This also protects them from gc. */ |
db9f0278 JB |
2070 | backtrace.args = &original_args; |
2071 | backtrace.nargs = UNEVALLED; | |
db9f0278 JB |
2072 | backtrace.debug_on_exit = 0; |
2073 | ||
2074 | if (debug_on_next_call) | |
2075 | do_debug_on_call (Qt); | |
2076 | ||
2077 | /* At this point, only original_fun and original_args | |
f6d62986 | 2078 | have values that will be used below. */ |
db9f0278 | 2079 | retry: |
8788120f KS |
2080 | |
2081 | /* Optimize for no indirection. */ | |
2082 | fun = original_fun; | |
2083 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
c644523b | 2084 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) |
8788120f | 2085 | fun = indirect_function (fun); |
db9f0278 | 2086 | |
90165123 | 2087 | if (SUBRP (fun)) |
db9f0278 JB |
2088 | { |
2089 | Lisp_Object numargs; | |
166c822d | 2090 | Lisp_Object argvals[8]; |
db9f0278 JB |
2091 | Lisp_Object args_left; |
2092 | register int i, maxargs; | |
2093 | ||
2094 | args_left = original_args; | |
2095 | numargs = Flength (args_left); | |
2096 | ||
7e63e0c3 | 2097 | check_cons_list (); |
c1788fbc | 2098 | |
f6d62986 SM |
2099 | if (XINT (numargs) < XSUBR (fun)->min_args |
2100 | || (XSUBR (fun)->max_args >= 0 | |
2101 | && XSUBR (fun)->max_args < XINT (numargs))) | |
734d55a2 | 2102 | xsignal2 (Qwrong_number_of_arguments, original_fun, numargs); |
db9f0278 | 2103 | |
ef1b0ba7 | 2104 | else if (XSUBR (fun)->max_args == UNEVALLED) |
bbc6b304 | 2105 | val = (XSUBR (fun)->function.aUNEVALLED) (args_left); |
ef1b0ba7 | 2106 | else if (XSUBR (fun)->max_args == MANY) |
db9f0278 | 2107 | { |
f6d62986 | 2108 | /* Pass a vector of evaluated arguments. */ |
db9f0278 | 2109 | Lisp_Object *vals; |
f66c7cf8 | 2110 | ptrdiff_t argnum = 0; |
3a7a9129 | 2111 | USE_SAFE_ALLOCA; |
db9f0278 | 2112 | |
b72e0717 | 2113 | SAFE_ALLOCA_LISP (vals, XINT (numargs)); |
db9f0278 JB |
2114 | |
2115 | GCPRO3 (args_left, fun, fun); | |
2116 | gcpro3.var = vals; | |
2117 | gcpro3.nvars = 0; | |
2118 | ||
265a9e55 | 2119 | while (!NILP (args_left)) |
db9f0278 | 2120 | { |
defb1411 | 2121 | vals[argnum++] = eval_sub (Fcar (args_left)); |
db9f0278 JB |
2122 | args_left = Fcdr (args_left); |
2123 | gcpro3.nvars = argnum; | |
2124 | } | |
db9f0278 JB |
2125 | |
2126 | backtrace.args = vals; | |
2127 | backtrace.nargs = XINT (numargs); | |
2128 | ||
d5273788 | 2129 | val = (XSUBR (fun)->function.aMANY) (XINT (numargs), vals); |
a6e3fa71 | 2130 | UNGCPRO; |
3a7a9129 | 2131 | SAFE_FREE (); |
db9f0278 | 2132 | } |
ef1b0ba7 | 2133 | else |
db9f0278 | 2134 | { |
ef1b0ba7 SM |
2135 | GCPRO3 (args_left, fun, fun); |
2136 | gcpro3.var = argvals; | |
2137 | gcpro3.nvars = 0; | |
db9f0278 | 2138 | |
ef1b0ba7 SM |
2139 | maxargs = XSUBR (fun)->max_args; |
2140 | for (i = 0; i < maxargs; args_left = Fcdr (args_left)) | |
2141 | { | |
a0ee6f27 | 2142 | argvals[i] = eval_sub (Fcar (args_left)); |
ef1b0ba7 SM |
2143 | gcpro3.nvars = ++i; |
2144 | } | |
db9f0278 | 2145 | |
ef1b0ba7 | 2146 | UNGCPRO; |
db9f0278 | 2147 | |
ef1b0ba7 SM |
2148 | backtrace.args = argvals; |
2149 | backtrace.nargs = XINT (numargs); | |
2150 | ||
2151 | switch (i) | |
2152 | { | |
2153 | case 0: | |
2154 | val = (XSUBR (fun)->function.a0 ()); | |
2155 | break; | |
2156 | case 1: | |
2157 | val = (XSUBR (fun)->function.a1 (argvals[0])); | |
2158 | break; | |
2159 | case 2: | |
2160 | val = (XSUBR (fun)->function.a2 (argvals[0], argvals[1])); | |
2161 | break; | |
2162 | case 3: | |
2163 | val = (XSUBR (fun)->function.a3 | |
2164 | (argvals[0], argvals[1], argvals[2])); | |
2165 | break; | |
2166 | case 4: | |
2167 | val = (XSUBR (fun)->function.a4 | |
2168 | (argvals[0], argvals[1], argvals[2], argvals[3])); | |
2169 | break; | |
2170 | case 5: | |
2171 | val = (XSUBR (fun)->function.a5 | |
2172 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2173 | argvals[4])); | |
2174 | break; | |
2175 | case 6: | |
2176 | val = (XSUBR (fun)->function.a6 | |
2177 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2178 | argvals[4], argvals[5])); | |
2179 | break; | |
2180 | case 7: | |
2181 | val = (XSUBR (fun)->function.a7 | |
2182 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2183 | argvals[4], argvals[5], argvals[6])); | |
2184 | break; | |
2185 | ||
2186 | case 8: | |
2187 | val = (XSUBR (fun)->function.a8 | |
2188 | (argvals[0], argvals[1], argvals[2], argvals[3], | |
2189 | argvals[4], argvals[5], argvals[6], argvals[7])); | |
2190 | break; | |
2191 | ||
2192 | default: | |
2193 | /* Someone has created a subr that takes more arguments than | |
2194 | is supported by this code. We need to either rewrite the | |
2195 | subr to use a different argument protocol, or add more | |
2196 | cases to this switch. */ | |
1088b922 | 2197 | emacs_abort (); |
ef1b0ba7 | 2198 | } |
db9f0278 JB |
2199 | } |
2200 | } | |
ef1b0ba7 | 2201 | else if (COMPILEDP (fun)) |
defb1411 | 2202 | val = apply_lambda (fun, original_args); |
db9f0278 JB |
2203 | else |
2204 | { | |
8788120f | 2205 | if (EQ (fun, Qunbound)) |
734d55a2 | 2206 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 2207 | if (!CONSP (fun)) |
734d55a2 KS |
2208 | xsignal1 (Qinvalid_function, original_fun); |
2209 | funcar = XCAR (fun); | |
90165123 | 2210 | if (!SYMBOLP (funcar)) |
734d55a2 | 2211 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 JB |
2212 | if (EQ (funcar, Qautoload)) |
2213 | { | |
7abaf5cc | 2214 | Fautoload_do_load (fun, original_fun, Qnil); |
db9f0278 JB |
2215 | goto retry; |
2216 | } | |
2217 | if (EQ (funcar, Qmacro)) | |
8be3a09c SM |
2218 | { |
2219 | ptrdiff_t count = SPECPDL_INDEX (); | |
8be3a09c SM |
2220 | Lisp_Object exp; |
2221 | /* Bind lexical-binding during expansion of the macro, so the | |
2222 | macro can know reliably if the code it outputs will be | |
2223 | interpreted using lexical-binding or not. */ | |
2224 | specbind (Qlexical_binding, | |
2225 | NILP (Vinternal_interpreter_environment) ? Qnil : Qt); | |
2226 | exp = apply1 (Fcdr (fun), original_args); | |
2227 | unbind_to (count, Qnil); | |
2228 | val = eval_sub (exp); | |
2229 | } | |
defb1411 SM |
2230 | else if (EQ (funcar, Qlambda) |
2231 | || EQ (funcar, Qclosure)) | |
2232 | val = apply_lambda (fun, original_args); | |
db9f0278 | 2233 | else |
734d55a2 | 2234 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2235 | } |
7e63e0c3 | 2236 | check_cons_list (); |
c1788fbc | 2237 | |
db9f0278 JB |
2238 | lisp_eval_depth--; |
2239 | if (backtrace.debug_on_exit) | |
2240 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2241 | backtrace_list = backtrace.next; | |
824eb35e | 2242 | |
db9f0278 JB |
2243 | return val; |
2244 | } | |
2245 | \f | |
8edd4a2b | 2246 | DEFUN ("apply", Fapply, Sapply, 1, MANY, 0, |
9dbc9081 PJ |
2247 | doc: /* Call FUNCTION with our remaining args, using our last arg as list of args. |
2248 | Then return the value FUNCTION returns. | |
2249 | Thus, (apply '+ 1 2 '(3 4)) returns 10. | |
2250 | usage: (apply FUNCTION &rest ARGUMENTS) */) | |
f66c7cf8 | 2251 | (ptrdiff_t nargs, Lisp_Object *args) |
db9f0278 | 2252 | { |
d311d28c PE |
2253 | ptrdiff_t i; |
2254 | EMACS_INT numargs; | |
db9f0278 JB |
2255 | register Lisp_Object spread_arg; |
2256 | register Lisp_Object *funcall_args; | |
3a7a9129 | 2257 | Lisp_Object fun, retval; |
96d44c64 | 2258 | struct gcpro gcpro1; |
3a7a9129 | 2259 | USE_SAFE_ALLOCA; |
db9f0278 JB |
2260 | |
2261 | fun = args [0]; | |
2262 | funcall_args = 0; | |
2263 | spread_arg = args [nargs - 1]; | |
b7826503 | 2264 | CHECK_LIST (spread_arg); |
177c0ea7 | 2265 | |
db9f0278 JB |
2266 | numargs = XINT (Flength (spread_arg)); |
2267 | ||
2268 | if (numargs == 0) | |
2269 | return Ffuncall (nargs - 1, args); | |
2270 | else if (numargs == 1) | |
2271 | { | |
03699b14 | 2272 | args [nargs - 1] = XCAR (spread_arg); |
db9f0278 JB |
2273 | return Ffuncall (nargs, args); |
2274 | } | |
2275 | ||
a6e3fa71 | 2276 | numargs += nargs - 2; |
db9f0278 | 2277 | |
8788120f KS |
2278 | /* Optimize for no indirection. */ |
2279 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
c644523b | 2280 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) |
8788120f | 2281 | fun = indirect_function (fun); |
ffd56f97 | 2282 | if (EQ (fun, Qunbound)) |
db9f0278 | 2283 | { |
f6d62986 | 2284 | /* Let funcall get the error. */ |
ffd56f97 JB |
2285 | fun = args[0]; |
2286 | goto funcall; | |
db9f0278 JB |
2287 | } |
2288 | ||
90165123 | 2289 | if (SUBRP (fun)) |
db9f0278 JB |
2290 | { |
2291 | if (numargs < XSUBR (fun)->min_args | |
2292 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) | |
f6d62986 | 2293 | goto funcall; /* Let funcall get the error. */ |
c5101a77 | 2294 | else if (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args > numargs) |
db9f0278 JB |
2295 | { |
2296 | /* Avoid making funcall cons up a yet another new vector of arguments | |
f6d62986 | 2297 | by explicitly supplying nil's for optional values. */ |
b72e0717 | 2298 | SAFE_ALLOCA_LISP (funcall_args, 1 + XSUBR (fun)->max_args); |
db9f0278 JB |
2299 | for (i = numargs; i < XSUBR (fun)->max_args;) |
2300 | funcall_args[++i] = Qnil; | |
96d44c64 SM |
2301 | GCPRO1 (*funcall_args); |
2302 | gcpro1.nvars = 1 + XSUBR (fun)->max_args; | |
db9f0278 JB |
2303 | } |
2304 | } | |
2305 | funcall: | |
2306 | /* We add 1 to numargs because funcall_args includes the | |
2307 | function itself as well as its arguments. */ | |
2308 | if (!funcall_args) | |
a6e3fa71 | 2309 | { |
b72e0717 | 2310 | SAFE_ALLOCA_LISP (funcall_args, 1 + numargs); |
96d44c64 SM |
2311 | GCPRO1 (*funcall_args); |
2312 | gcpro1.nvars = 1 + numargs; | |
a6e3fa71 JB |
2313 | } |
2314 | ||
663e2b3f | 2315 | memcpy (funcall_args, args, nargs * word_size); |
db9f0278 JB |
2316 | /* Spread the last arg we got. Its first element goes in |
2317 | the slot that it used to occupy, hence this value of I. */ | |
2318 | i = nargs - 1; | |
265a9e55 | 2319 | while (!NILP (spread_arg)) |
db9f0278 | 2320 | { |
03699b14 KR |
2321 | funcall_args [i++] = XCAR (spread_arg); |
2322 | spread_arg = XCDR (spread_arg); | |
db9f0278 | 2323 | } |
a6e3fa71 | 2324 | |
96d44c64 | 2325 | /* By convention, the caller needs to gcpro Ffuncall's args. */ |
3a7a9129 CY |
2326 | retval = Ffuncall (gcpro1.nvars, funcall_args); |
2327 | UNGCPRO; | |
2328 | SAFE_FREE (); | |
2329 | ||
2330 | return retval; | |
db9f0278 JB |
2331 | } |
2332 | \f | |
ff936e53 SM |
2333 | /* Run hook variables in various ways. */ |
2334 | ||
f6d62986 | 2335 | static Lisp_Object |
f66c7cf8 | 2336 | funcall_nil (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2337 | { |
2338 | Ffuncall (nargs, args); | |
2339 | return Qnil; | |
2340 | } | |
ff936e53 | 2341 | |
a7ca3326 | 2342 | DEFUN ("run-hooks", Frun_hooks, Srun_hooks, 0, MANY, 0, |
9f685258 | 2343 | doc: /* Run each hook in HOOKS. |
9dbc9081 PJ |
2344 | Each argument should be a symbol, a hook variable. |
2345 | These symbols are processed in the order specified. | |
2346 | If a hook symbol has a non-nil value, that value may be a function | |
2347 | or a list of functions to be called to run the hook. | |
2348 | If the value is a function, it is called with no arguments. | |
2349 | If it is a list, the elements are called, in order, with no arguments. | |
2350 | ||
9f685258 LK |
2351 | Major modes should not use this function directly to run their mode |
2352 | hook; they should use `run-mode-hooks' instead. | |
2353 | ||
72e85d5d RS |
2354 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2355 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2356 | usage: (run-hooks &rest HOOKS) */) |
f66c7cf8 | 2357 | (ptrdiff_t nargs, Lisp_Object *args) |
ff936e53 SM |
2358 | { |
2359 | Lisp_Object hook[1]; | |
f66c7cf8 | 2360 | ptrdiff_t i; |
ff936e53 SM |
2361 | |
2362 | for (i = 0; i < nargs; i++) | |
2363 | { | |
2364 | hook[0] = args[i]; | |
f6d62986 | 2365 | run_hook_with_args (1, hook, funcall_nil); |
ff936e53 SM |
2366 | } |
2367 | ||
2368 | return Qnil; | |
2369 | } | |
177c0ea7 | 2370 | |
a7ca3326 | 2371 | DEFUN ("run-hook-with-args", Frun_hook_with_args, |
9dbc9081 PJ |
2372 | Srun_hook_with_args, 1, MANY, 0, |
2373 | doc: /* Run HOOK with the specified arguments ARGS. | |
2374 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil | |
2375 | value, that value may be a function or a list of functions to be | |
2376 | called to run the hook. If the value is a function, it is called with | |
2377 | the given arguments and its return value is returned. If it is a list | |
2378 | of functions, those functions are called, in order, | |
2379 | with the given arguments ARGS. | |
d5e2c90c | 2380 | It is best not to depend on the value returned by `run-hook-with-args', |
9dbc9081 PJ |
2381 | as that may change. |
2382 | ||
72e85d5d RS |
2383 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2384 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2385 | usage: (run-hook-with-args HOOK &rest ARGS) */) |
f66c7cf8 | 2386 | (ptrdiff_t nargs, Lisp_Object *args) |
ff936e53 | 2387 | { |
f6d62986 | 2388 | return run_hook_with_args (nargs, args, funcall_nil); |
ff936e53 SM |
2389 | } |
2390 | ||
a0d76c27 | 2391 | DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success, |
9dbc9081 PJ |
2392 | Srun_hook_with_args_until_success, 1, MANY, 0, |
2393 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2394 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2395 | value, that value may be a function or a list of functions to be | |
2396 | called to run the hook. If the value is a function, it is called with | |
2397 | the given arguments and its return value is returned. | |
2398 | If it is a list of functions, those functions are called, in order, | |
2399 | with the given arguments ARGS, until one of them | |
9dbc9081 | 2400 | returns a non-nil value. Then we return that value. |
d5e2c90c | 2401 | However, if they all return nil, we return nil. |
1e9bbf47 | 2402 | If the value of HOOK is nil, this function returns nil. |
9dbc9081 | 2403 | |
72e85d5d RS |
2404 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2405 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2406 | usage: (run-hook-with-args-until-success HOOK &rest ARGS) */) |
f66c7cf8 | 2407 | (ptrdiff_t nargs, Lisp_Object *args) |
b0b667cb | 2408 | { |
f6d62986 SM |
2409 | return run_hook_with_args (nargs, args, Ffuncall); |
2410 | } | |
2411 | ||
2412 | static Lisp_Object | |
f66c7cf8 | 2413 | funcall_not (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2414 | { |
2415 | return NILP (Ffuncall (nargs, args)) ? Qt : Qnil; | |
ff936e53 SM |
2416 | } |
2417 | ||
a7ca3326 | 2418 | DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure, |
9dbc9081 PJ |
2419 | Srun_hook_with_args_until_failure, 1, MANY, 0, |
2420 | doc: /* Run HOOK with the specified arguments ARGS. | |
d5e2c90c RS |
2421 | HOOK should be a symbol, a hook variable. If HOOK has a non-nil |
2422 | value, that value may be a function or a list of functions to be | |
2423 | called to run the hook. If the value is a function, it is called with | |
1e9bbf47 GM |
2424 | the given arguments. Then we return nil if the function returns nil, |
2425 | and t if it returns non-nil. | |
d5e2c90c RS |
2426 | If it is a list of functions, those functions are called, in order, |
2427 | with the given arguments ARGS, until one of them returns nil. | |
1e9bbf47 GM |
2428 | Then we return nil. However, if they all return non-nil, we return t. |
2429 | If the value of HOOK is nil, this function returns t. | |
9dbc9081 | 2430 | |
72e85d5d RS |
2431 | Do not use `make-local-variable' to make a hook variable buffer-local. |
2432 | Instead, use `add-hook' and specify t for the LOCAL argument. | |
9dbc9081 | 2433 | usage: (run-hook-with-args-until-failure HOOK &rest ARGS) */) |
f66c7cf8 | 2434 | (ptrdiff_t nargs, Lisp_Object *args) |
ff936e53 | 2435 | { |
f6d62986 | 2436 | return NILP (run_hook_with_args (nargs, args, funcall_not)) ? Qt : Qnil; |
ff936e53 SM |
2437 | } |
2438 | ||
f6d62986 | 2439 | static Lisp_Object |
f66c7cf8 | 2440 | run_hook_wrapped_funcall (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2441 | { |
2442 | Lisp_Object tmp = args[0], ret; | |
2443 | args[0] = args[1]; | |
2444 | args[1] = tmp; | |
2445 | ret = Ffuncall (nargs, args); | |
2446 | args[1] = args[0]; | |
2447 | args[0] = tmp; | |
2448 | return ret; | |
2449 | } | |
2450 | ||
2451 | DEFUN ("run-hook-wrapped", Frun_hook_wrapped, Srun_hook_wrapped, 2, MANY, 0, | |
2452 | doc: /* Run HOOK, passing each function through WRAP-FUNCTION. | |
2453 | I.e. instead of calling each function FUN directly with arguments ARGS, | |
2454 | it calls WRAP-FUNCTION with arguments FUN and ARGS. | |
2455 | As soon as a call to WRAP-FUNCTION returns non-nil, `run-hook-wrapped' | |
2456 | aborts and returns that value. | |
2457 | usage: (run-hook-wrapped HOOK WRAP-FUNCTION &rest ARGS) */) | |
f66c7cf8 | 2458 | (ptrdiff_t nargs, Lisp_Object *args) |
f6d62986 SM |
2459 | { |
2460 | return run_hook_with_args (nargs, args, run_hook_wrapped_funcall); | |
2461 | } | |
ff936e53 | 2462 | |
c933ea05 RS |
2463 | /* ARGS[0] should be a hook symbol. |
2464 | Call each of the functions in the hook value, passing each of them | |
2465 | as arguments all the rest of ARGS (all NARGS - 1 elements). | |
f6d62986 | 2466 | FUNCALL specifies how to call each function on the hook. |
c933ea05 RS |
2467 | The caller (or its caller, etc) must gcpro all of ARGS, |
2468 | except that it isn't necessary to gcpro ARGS[0]. */ | |
2469 | ||
f6d62986 | 2470 | Lisp_Object |
f66c7cf8 PE |
2471 | run_hook_with_args (ptrdiff_t nargs, Lisp_Object *args, |
2472 | Lisp_Object (*funcall) (ptrdiff_t nargs, Lisp_Object *args)) | |
ff936e53 | 2473 | { |
f6d62986 | 2474 | Lisp_Object sym, val, ret = Qnil; |
fada05d6 | 2475 | struct gcpro gcpro1, gcpro2, gcpro3; |
b0b667cb | 2476 | |
f029ca5f RS |
2477 | /* If we are dying or still initializing, |
2478 | don't do anything--it would probably crash if we tried. */ | |
2479 | if (NILP (Vrun_hooks)) | |
caff32a7 | 2480 | return Qnil; |
f029ca5f | 2481 | |
b0b667cb | 2482 | sym = args[0]; |
aa681b51 | 2483 | val = find_symbol_value (sym); |
ff936e53 | 2484 | |
b0b667cb | 2485 | if (EQ (val, Qunbound) || NILP (val)) |
ff936e53 | 2486 | return ret; |
03699b14 | 2487 | else if (!CONSP (val) || EQ (XCAR (val), Qlambda)) |
b0b667cb KH |
2488 | { |
2489 | args[0] = val; | |
f6d62986 | 2490 | return funcall (nargs, args); |
b0b667cb KH |
2491 | } |
2492 | else | |
2493 | { | |
1faed8ae PE |
2494 | Lisp_Object global_vals = Qnil; |
2495 | GCPRO3 (sym, val, global_vals); | |
cb9d21f8 | 2496 | |
ff936e53 | 2497 | for (; |
f6d62986 | 2498 | CONSP (val) && NILP (ret); |
03699b14 | 2499 | val = XCDR (val)) |
b0b667cb | 2500 | { |
03699b14 | 2501 | if (EQ (XCAR (val), Qt)) |
b0b667cb KH |
2502 | { |
2503 | /* t indicates this hook has a local binding; | |
2504 | it means to run the global binding too. */ | |
1faed8ae PE |
2505 | global_vals = Fdefault_value (sym); |
2506 | if (NILP (global_vals)) continue; | |
b0b667cb | 2507 | |
1faed8ae | 2508 | if (!CONSP (global_vals) || EQ (XCAR (global_vals), Qlambda)) |
b0b667cb | 2509 | { |
1faed8ae | 2510 | args[0] = global_vals; |
f6d62986 | 2511 | ret = funcall (nargs, args); |
8932b1c2 CY |
2512 | } |
2513 | else | |
2514 | { | |
2515 | for (; | |
f6d62986 | 2516 | CONSP (global_vals) && NILP (ret); |
1faed8ae | 2517 | global_vals = XCDR (global_vals)) |
8932b1c2 | 2518 | { |
1faed8ae | 2519 | args[0] = XCAR (global_vals); |
8932b1c2 CY |
2520 | /* In a global value, t should not occur. If it does, we |
2521 | must ignore it to avoid an endless loop. */ | |
2522 | if (!EQ (args[0], Qt)) | |
f6d62986 | 2523 | ret = funcall (nargs, args); |
8932b1c2 | 2524 | } |
b0b667cb KH |
2525 | } |
2526 | } | |
2527 | else | |
2528 | { | |
03699b14 | 2529 | args[0] = XCAR (val); |
f6d62986 | 2530 | ret = funcall (nargs, args); |
b0b667cb KH |
2531 | } |
2532 | } | |
cb9d21f8 RS |
2533 | |
2534 | UNGCPRO; | |
ff936e53 | 2535 | return ret; |
b0b667cb KH |
2536 | } |
2537 | } | |
c933ea05 | 2538 | |
7d48558f RS |
2539 | /* Run the hook HOOK, giving each function the two args ARG1 and ARG2. */ |
2540 | ||
2541 | void | |
d3da34e0 | 2542 | run_hook_with_args_2 (Lisp_Object hook, Lisp_Object arg1, Lisp_Object arg2) |
7d48558f RS |
2543 | { |
2544 | Lisp_Object temp[3]; | |
2545 | temp[0] = hook; | |
2546 | temp[1] = arg1; | |
2547 | temp[2] = arg2; | |
2548 | ||
2549 | Frun_hook_with_args (3, temp); | |
2550 | } | |
ff936e53 | 2551 | \f |
f6d62986 | 2552 | /* Apply fn to arg. */ |
db9f0278 | 2553 | Lisp_Object |
d3da34e0 | 2554 | apply1 (Lisp_Object fn, Lisp_Object arg) |
db9f0278 | 2555 | { |
a6e3fa71 JB |
2556 | struct gcpro gcpro1; |
2557 | ||
2558 | GCPRO1 (fn); | |
265a9e55 | 2559 | if (NILP (arg)) |
a6e3fa71 JB |
2560 | RETURN_UNGCPRO (Ffuncall (1, &fn)); |
2561 | gcpro1.nvars = 2; | |
db9f0278 JB |
2562 | { |
2563 | Lisp_Object args[2]; | |
2564 | args[0] = fn; | |
2565 | args[1] = arg; | |
a6e3fa71 JB |
2566 | gcpro1.var = args; |
2567 | RETURN_UNGCPRO (Fapply (2, args)); | |
db9f0278 | 2568 | } |
db9f0278 JB |
2569 | } |
2570 | ||
f6d62986 | 2571 | /* Call function fn on no arguments. */ |
db9f0278 | 2572 | Lisp_Object |
d3da34e0 | 2573 | call0 (Lisp_Object fn) |
db9f0278 | 2574 | { |
a6e3fa71 JB |
2575 | struct gcpro gcpro1; |
2576 | ||
2577 | GCPRO1 (fn); | |
2578 | RETURN_UNGCPRO (Ffuncall (1, &fn)); | |
db9f0278 JB |
2579 | } |
2580 | ||
f6d62986 | 2581 | /* Call function fn with 1 argument arg1. */ |
db9f0278 JB |
2582 | /* ARGSUSED */ |
2583 | Lisp_Object | |
d3da34e0 | 2584 | call1 (Lisp_Object fn, Lisp_Object arg1) |
db9f0278 | 2585 | { |
a6e3fa71 | 2586 | struct gcpro gcpro1; |
177c0ea7 | 2587 | Lisp_Object args[2]; |
a6e3fa71 | 2588 | |
db9f0278 | 2589 | args[0] = fn; |
15285f9f | 2590 | args[1] = arg1; |
a6e3fa71 JB |
2591 | GCPRO1 (args[0]); |
2592 | gcpro1.nvars = 2; | |
2593 | RETURN_UNGCPRO (Ffuncall (2, args)); | |
db9f0278 JB |
2594 | } |
2595 | ||
f6d62986 | 2596 | /* Call function fn with 2 arguments arg1, arg2. */ |
db9f0278 JB |
2597 | /* ARGSUSED */ |
2598 | Lisp_Object | |
d3da34e0 | 2599 | call2 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2) |
db9f0278 | 2600 | { |
a6e3fa71 | 2601 | struct gcpro gcpro1; |
db9f0278 JB |
2602 | Lisp_Object args[3]; |
2603 | args[0] = fn; | |
15285f9f RS |
2604 | args[1] = arg1; |
2605 | args[2] = arg2; | |
a6e3fa71 JB |
2606 | GCPRO1 (args[0]); |
2607 | gcpro1.nvars = 3; | |
2608 | RETURN_UNGCPRO (Ffuncall (3, args)); | |
db9f0278 JB |
2609 | } |
2610 | ||
f6d62986 | 2611 | /* Call function fn with 3 arguments arg1, arg2, arg3. */ |
db9f0278 JB |
2612 | /* ARGSUSED */ |
2613 | Lisp_Object | |
d3da34e0 | 2614 | call3 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3) |
db9f0278 | 2615 | { |
a6e3fa71 | 2616 | struct gcpro gcpro1; |
db9f0278 JB |
2617 | Lisp_Object args[4]; |
2618 | args[0] = fn; | |
15285f9f RS |
2619 | args[1] = arg1; |
2620 | args[2] = arg2; | |
2621 | args[3] = arg3; | |
a6e3fa71 JB |
2622 | GCPRO1 (args[0]); |
2623 | gcpro1.nvars = 4; | |
2624 | RETURN_UNGCPRO (Ffuncall (4, args)); | |
db9f0278 JB |
2625 | } |
2626 | ||
f6d62986 | 2627 | /* Call function fn with 4 arguments arg1, arg2, arg3, arg4. */ |
a5a44b91 JB |
2628 | /* ARGSUSED */ |
2629 | Lisp_Object | |
d3da34e0 JB |
2630 | call4 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2631 | Lisp_Object arg4) | |
a5a44b91 JB |
2632 | { |
2633 | struct gcpro gcpro1; | |
a5a44b91 JB |
2634 | Lisp_Object args[5]; |
2635 | args[0] = fn; | |
15285f9f RS |
2636 | args[1] = arg1; |
2637 | args[2] = arg2; | |
2638 | args[3] = arg3; | |
2639 | args[4] = arg4; | |
a5a44b91 JB |
2640 | GCPRO1 (args[0]); |
2641 | gcpro1.nvars = 5; | |
2642 | RETURN_UNGCPRO (Ffuncall (5, args)); | |
a5a44b91 JB |
2643 | } |
2644 | ||
f6d62986 | 2645 | /* Call function fn with 5 arguments arg1, arg2, arg3, arg4, arg5. */ |
15285f9f RS |
2646 | /* ARGSUSED */ |
2647 | Lisp_Object | |
d3da34e0 JB |
2648 | call5 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2649 | Lisp_Object arg4, Lisp_Object arg5) | |
15285f9f RS |
2650 | { |
2651 | struct gcpro gcpro1; | |
15285f9f RS |
2652 | Lisp_Object args[6]; |
2653 | args[0] = fn; | |
2654 | args[1] = arg1; | |
2655 | args[2] = arg2; | |
2656 | args[3] = arg3; | |
2657 | args[4] = arg4; | |
2658 | args[5] = arg5; | |
2659 | GCPRO1 (args[0]); | |
2660 | gcpro1.nvars = 6; | |
2661 | RETURN_UNGCPRO (Ffuncall (6, args)); | |
15285f9f RS |
2662 | } |
2663 | ||
f6d62986 | 2664 | /* Call function fn with 6 arguments arg1, arg2, arg3, arg4, arg5, arg6. */ |
15285f9f RS |
2665 | /* ARGSUSED */ |
2666 | Lisp_Object | |
d3da34e0 JB |
2667 | call6 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2668 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6) | |
15285f9f RS |
2669 | { |
2670 | struct gcpro gcpro1; | |
15285f9f RS |
2671 | Lisp_Object args[7]; |
2672 | args[0] = fn; | |
2673 | args[1] = arg1; | |
2674 | args[2] = arg2; | |
2675 | args[3] = arg3; | |
2676 | args[4] = arg4; | |
2677 | args[5] = arg5; | |
2678 | args[6] = arg6; | |
2679 | GCPRO1 (args[0]); | |
2680 | gcpro1.nvars = 7; | |
2681 | RETURN_UNGCPRO (Ffuncall (7, args)); | |
15285f9f RS |
2682 | } |
2683 | ||
f6d62986 | 2684 | /* Call function fn with 7 arguments arg1, arg2, arg3, arg4, arg5, arg6, arg7. */ |
574c05e2 KK |
2685 | /* ARGSUSED */ |
2686 | Lisp_Object | |
d3da34e0 JB |
2687 | call7 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2, Lisp_Object arg3, |
2688 | Lisp_Object arg4, Lisp_Object arg5, Lisp_Object arg6, Lisp_Object arg7) | |
574c05e2 KK |
2689 | { |
2690 | struct gcpro gcpro1; | |
574c05e2 KK |
2691 | Lisp_Object args[8]; |
2692 | args[0] = fn; | |
2693 | args[1] = arg1; | |
2694 | args[2] = arg2; | |
2695 | args[3] = arg3; | |
2696 | args[4] = arg4; | |
2697 | args[5] = arg5; | |
2698 | args[6] = arg6; | |
2699 | args[7] = arg7; | |
2700 | GCPRO1 (args[0]); | |
2701 | gcpro1.nvars = 8; | |
2702 | RETURN_UNGCPRO (Ffuncall (8, args)); | |
574c05e2 KK |
2703 | } |
2704 | ||
6c2ef893 RS |
2705 | /* The caller should GCPRO all the elements of ARGS. */ |
2706 | ||
a7ca3326 | 2707 | DEFUN ("functionp", Ffunctionp, Sfunctionp, 1, 1, 0, |
7200d79c | 2708 | doc: /* Non-nil if OBJECT is a function. */) |
c566235d | 2709 | (Lisp_Object object) |
b9598260 | 2710 | { |
e1f29348 | 2711 | if (FUNCTIONP (object)) |
b9598260 | 2712 | return Qt; |
e1f29348 | 2713 | return Qnil; |
b9598260 SM |
2714 | } |
2715 | ||
a7ca3326 | 2716 | DEFUN ("funcall", Ffuncall, Sfuncall, 1, MANY, 0, |
9dbc9081 PJ |
2717 | doc: /* Call first argument as a function, passing remaining arguments to it. |
2718 | Return the value that function returns. | |
2719 | Thus, (funcall 'cons 'x 'y) returns (x . y). | |
2720 | usage: (funcall FUNCTION &rest ARGUMENTS) */) | |
f66c7cf8 | 2721 | (ptrdiff_t nargs, Lisp_Object *args) |
db9f0278 | 2722 | { |
8788120f | 2723 | Lisp_Object fun, original_fun; |
db9f0278 | 2724 | Lisp_Object funcar; |
f66c7cf8 | 2725 | ptrdiff_t numargs = nargs - 1; |
db9f0278 JB |
2726 | Lisp_Object lisp_numargs; |
2727 | Lisp_Object val; | |
2728 | struct backtrace backtrace; | |
2729 | register Lisp_Object *internal_args; | |
f66c7cf8 | 2730 | ptrdiff_t i; |
db9f0278 JB |
2731 | |
2732 | QUIT; | |
db9f0278 JB |
2733 | |
2734 | if (++lisp_eval_depth > max_lisp_eval_depth) | |
2735 | { | |
2736 | if (max_lisp_eval_depth < 100) | |
2737 | max_lisp_eval_depth = 100; | |
2738 | if (lisp_eval_depth > max_lisp_eval_depth) | |
921baa95 | 2739 | error ("Lisp nesting exceeds `max-lisp-eval-depth'"); |
db9f0278 JB |
2740 | } |
2741 | ||
2742 | backtrace.next = backtrace_list; | |
2743 | backtrace_list = &backtrace; | |
2744 | backtrace.function = &args[0]; | |
7abaf5cc | 2745 | backtrace.args = &args[1]; /* This also GCPROs them. */ |
db9f0278 | 2746 | backtrace.nargs = nargs - 1; |
db9f0278 JB |
2747 | backtrace.debug_on_exit = 0; |
2748 | ||
7abaf5cc SM |
2749 | /* Call GC after setting up the backtrace, so the latter GCPROs the args. */ |
2750 | maybe_gc (); | |
2751 | ||
db9f0278 JB |
2752 | if (debug_on_next_call) |
2753 | do_debug_on_call (Qlambda); | |
2754 | ||
7e63e0c3 | 2755 | check_cons_list (); |
fff3ff9c | 2756 | |
8788120f KS |
2757 | original_fun = args[0]; |
2758 | ||
db9f0278 JB |
2759 | retry: |
2760 | ||
8788120f KS |
2761 | /* Optimize for no indirection. */ |
2762 | fun = original_fun; | |
2763 | if (SYMBOLP (fun) && !EQ (fun, Qunbound) | |
c644523b | 2764 | && (fun = XSYMBOL (fun)->function, SYMBOLP (fun))) |
8788120f | 2765 | fun = indirect_function (fun); |
db9f0278 | 2766 | |
90165123 | 2767 | if (SUBRP (fun)) |
db9f0278 | 2768 | { |
ef1b0ba7 | 2769 | if (numargs < XSUBR (fun)->min_args |
db9f0278 JB |
2770 | || (XSUBR (fun)->max_args >= 0 && XSUBR (fun)->max_args < numargs)) |
2771 | { | |
a631e24c | 2772 | XSETFASTINT (lisp_numargs, numargs); |
734d55a2 | 2773 | xsignal2 (Qwrong_number_of_arguments, original_fun, lisp_numargs); |
db9f0278 JB |
2774 | } |
2775 | ||
ef1b0ba7 | 2776 | else if (XSUBR (fun)->max_args == UNEVALLED) |
734d55a2 | 2777 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2778 | |
ef1b0ba7 SM |
2779 | else if (XSUBR (fun)->max_args == MANY) |
2780 | val = (XSUBR (fun)->function.aMANY) (numargs, args + 1); | |
db9f0278 | 2781 | else |
db9f0278 | 2782 | { |
ef1b0ba7 SM |
2783 | if (XSUBR (fun)->max_args > numargs) |
2784 | { | |
38182d90 PE |
2785 | internal_args = alloca (XSUBR (fun)->max_args |
2786 | * sizeof *internal_args); | |
663e2b3f | 2787 | memcpy (internal_args, args + 1, numargs * word_size); |
ef1b0ba7 SM |
2788 | for (i = numargs; i < XSUBR (fun)->max_args; i++) |
2789 | internal_args[i] = Qnil; | |
2790 | } | |
2791 | else | |
2792 | internal_args = args + 1; | |
2793 | switch (XSUBR (fun)->max_args) | |
2794 | { | |
2795 | case 0: | |
2796 | val = (XSUBR (fun)->function.a0 ()); | |
2797 | break; | |
2798 | case 1: | |
2799 | val = (XSUBR (fun)->function.a1 (internal_args[0])); | |
2800 | break; | |
2801 | case 2: | |
2802 | val = (XSUBR (fun)->function.a2 | |
2803 | (internal_args[0], internal_args[1])); | |
2804 | break; | |
2805 | case 3: | |
2806 | val = (XSUBR (fun)->function.a3 | |
2807 | (internal_args[0], internal_args[1], internal_args[2])); | |
2808 | break; | |
2809 | case 4: | |
2810 | val = (XSUBR (fun)->function.a4 | |
2811 | (internal_args[0], internal_args[1], internal_args[2], | |
2812 | internal_args[3])); | |
2813 | break; | |
2814 | case 5: | |
2815 | val = (XSUBR (fun)->function.a5 | |
2816 | (internal_args[0], internal_args[1], internal_args[2], | |
2817 | internal_args[3], internal_args[4])); | |
2818 | break; | |
2819 | case 6: | |
2820 | val = (XSUBR (fun)->function.a6 | |
2821 | (internal_args[0], internal_args[1], internal_args[2], | |
2822 | internal_args[3], internal_args[4], internal_args[5])); | |
2823 | break; | |
2824 | case 7: | |
2825 | val = (XSUBR (fun)->function.a7 | |
2826 | (internal_args[0], internal_args[1], internal_args[2], | |
2827 | internal_args[3], internal_args[4], internal_args[5], | |
2828 | internal_args[6])); | |
2829 | break; | |
2830 | ||
2831 | case 8: | |
2832 | val = (XSUBR (fun)->function.a8 | |
2833 | (internal_args[0], internal_args[1], internal_args[2], | |
2834 | internal_args[3], internal_args[4], internal_args[5], | |
2835 | internal_args[6], internal_args[7])); | |
2836 | break; | |
2837 | ||
2838 | default: | |
2839 | ||
2840 | /* If a subr takes more than 8 arguments without using MANY | |
2841 | or UNEVALLED, we need to extend this function to support it. | |
2842 | Until this is done, there is no way to call the function. */ | |
1088b922 | 2843 | emacs_abort (); |
ef1b0ba7 | 2844 | } |
db9f0278 JB |
2845 | } |
2846 | } | |
ef1b0ba7 | 2847 | else if (COMPILEDP (fun)) |
db9f0278 JB |
2848 | val = funcall_lambda (fun, numargs, args + 1); |
2849 | else | |
2850 | { | |
8788120f | 2851 | if (EQ (fun, Qunbound)) |
734d55a2 | 2852 | xsignal1 (Qvoid_function, original_fun); |
db9f0278 | 2853 | if (!CONSP (fun)) |
734d55a2 KS |
2854 | xsignal1 (Qinvalid_function, original_fun); |
2855 | funcar = XCAR (fun); | |
90165123 | 2856 | if (!SYMBOLP (funcar)) |
734d55a2 | 2857 | xsignal1 (Qinvalid_function, original_fun); |
defb1411 SM |
2858 | if (EQ (funcar, Qlambda) |
2859 | || EQ (funcar, Qclosure)) | |
db9f0278 | 2860 | val = funcall_lambda (fun, numargs, args + 1); |
db9f0278 JB |
2861 | else if (EQ (funcar, Qautoload)) |
2862 | { | |
7abaf5cc | 2863 | Fautoload_do_load (fun, original_fun, Qnil); |
7e63e0c3 | 2864 | check_cons_list (); |
db9f0278 JB |
2865 | goto retry; |
2866 | } | |
2867 | else | |
734d55a2 | 2868 | xsignal1 (Qinvalid_function, original_fun); |
db9f0278 | 2869 | } |
7e63e0c3 | 2870 | check_cons_list (); |
db9f0278 JB |
2871 | lisp_eval_depth--; |
2872 | if (backtrace.debug_on_exit) | |
2873 | val = call_debugger (Fcons (Qexit, Fcons (val, Qnil))); | |
2874 | backtrace_list = backtrace.next; | |
2875 | return val; | |
2876 | } | |
2877 | \f | |
2f7c71a1 | 2878 | static Lisp_Object |
defb1411 | 2879 | apply_lambda (Lisp_Object fun, Lisp_Object args) |
db9f0278 JB |
2880 | { |
2881 | Lisp_Object args_left; | |
d311d28c PE |
2882 | ptrdiff_t i; |
2883 | EMACS_INT numargs; | |
db9f0278 JB |
2884 | register Lisp_Object *arg_vector; |
2885 | struct gcpro gcpro1, gcpro2, gcpro3; | |
db9f0278 | 2886 | register Lisp_Object tem; |
3a7a9129 | 2887 | USE_SAFE_ALLOCA; |
db9f0278 | 2888 | |
f66c7cf8 | 2889 | numargs = XFASTINT (Flength (args)); |
c5101a77 | 2890 | SAFE_ALLOCA_LISP (arg_vector, numargs); |
db9f0278 JB |
2891 | args_left = args; |
2892 | ||
2893 | GCPRO3 (*arg_vector, args_left, fun); | |
2894 | gcpro1.nvars = 0; | |
2895 | ||
c5101a77 | 2896 | for (i = 0; i < numargs; ) |
db9f0278 JB |
2897 | { |
2898 | tem = Fcar (args_left), args_left = Fcdr (args_left); | |
defb1411 | 2899 | tem = eval_sub (tem); |
db9f0278 JB |
2900 | arg_vector[i++] = tem; |
2901 | gcpro1.nvars = i; | |
2902 | } | |
2903 | ||
2904 | UNGCPRO; | |
2905 | ||
f07a954e SM |
2906 | backtrace_list->args = arg_vector; |
2907 | backtrace_list->nargs = i; | |
c5101a77 | 2908 | tem = funcall_lambda (fun, numargs, arg_vector); |
db9f0278 JB |
2909 | |
2910 | /* Do the debug-on-exit now, while arg_vector still exists. */ | |
2911 | if (backtrace_list->debug_on_exit) | |
2912 | tem = call_debugger (Fcons (Qexit, Fcons (tem, Qnil))); | |
2913 | /* Don't do it again when we return to eval. */ | |
2914 | backtrace_list->debug_on_exit = 0; | |
3a7a9129 | 2915 | SAFE_FREE (); |
db9f0278 JB |
2916 | return tem; |
2917 | } | |
2918 | ||
2919 | /* Apply a Lisp function FUN to the NARGS evaluated arguments in ARG_VECTOR | |
2920 | and return the result of evaluation. | |
2921 | FUN must be either a lambda-expression or a compiled-code object. */ | |
2922 | ||
2901f1d1 | 2923 | static Lisp_Object |
f66c7cf8 | 2924 | funcall_lambda (Lisp_Object fun, ptrdiff_t nargs, |
c5101a77 | 2925 | register Lisp_Object *arg_vector) |
db9f0278 | 2926 | { |
defb1411 | 2927 | Lisp_Object val, syms_left, next, lexenv; |
d311d28c | 2928 | ptrdiff_t count = SPECPDL_INDEX (); |
f66c7cf8 | 2929 | ptrdiff_t i; |
1882aa38 | 2930 | bool optional, rest; |
db9f0278 | 2931 | |
90165123 | 2932 | if (CONSP (fun)) |
9ab90667 | 2933 | { |
defb1411 SM |
2934 | if (EQ (XCAR (fun), Qclosure)) |
2935 | { | |
2936 | fun = XCDR (fun); /* Drop `closure'. */ | |
2937 | lexenv = XCAR (fun); | |
23aba0ea | 2938 | CHECK_LIST_CONS (fun, fun); |
defb1411 SM |
2939 | } |
2940 | else | |
2941 | lexenv = Qnil; | |
9ab90667 GM |
2942 | syms_left = XCDR (fun); |
2943 | if (CONSP (syms_left)) | |
2944 | syms_left = XCAR (syms_left); | |
2945 | else | |
734d55a2 | 2946 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 2947 | } |
90165123 | 2948 | else if (COMPILEDP (fun)) |
defb1411 | 2949 | { |
798cb644 SM |
2950 | syms_left = AREF (fun, COMPILED_ARGLIST); |
2951 | if (INTEGERP (syms_left)) | |
876c194c SM |
2952 | /* A byte-code object with a non-nil `push args' slot means we |
2953 | shouldn't bind any arguments, instead just call the byte-code | |
2954 | interpreter directly; it will push arguments as necessary. | |
2955 | ||
9173deec | 2956 | Byte-code objects with either a non-existent, or a nil value for |
876c194c SM |
2957 | the `push args' slot (the default), have dynamically-bound |
2958 | arguments, and use the argument-binding code below instead (as do | |
2959 | all interpreted functions, even lexically bound ones). */ | |
2960 | { | |
2961 | /* If we have not actually read the bytecode string | |
2962 | and constants vector yet, fetch them from the file. */ | |
2963 | if (CONSP (AREF (fun, COMPILED_BYTECODE))) | |
2964 | Ffetch_bytecode (fun); | |
2965 | return exec_byte_code (AREF (fun, COMPILED_BYTECODE), | |
2966 | AREF (fun, COMPILED_CONSTANTS), | |
2967 | AREF (fun, COMPILED_STACK_DEPTH), | |
798cb644 | 2968 | syms_left, |
876c194c SM |
2969 | nargs, arg_vector); |
2970 | } | |
defb1411 SM |
2971 | lexenv = Qnil; |
2972 | } | |
9ab90667 | 2973 | else |
1088b922 | 2974 | emacs_abort (); |
db9f0278 | 2975 | |
9ab90667 GM |
2976 | i = optional = rest = 0; |
2977 | for (; CONSP (syms_left); syms_left = XCDR (syms_left)) | |
db9f0278 JB |
2978 | { |
2979 | QUIT; | |
177c0ea7 | 2980 | |
9ab90667 | 2981 | next = XCAR (syms_left); |
8788120f | 2982 | if (!SYMBOLP (next)) |
734d55a2 | 2983 | xsignal1 (Qinvalid_function, fun); |
177c0ea7 | 2984 | |
db9f0278 JB |
2985 | if (EQ (next, Qand_rest)) |
2986 | rest = 1; | |
2987 | else if (EQ (next, Qand_optional)) | |
2988 | optional = 1; | |
db9f0278 | 2989 | else |
db9f0278 | 2990 | { |
e610eaca | 2991 | Lisp_Object arg; |
defb1411 SM |
2992 | if (rest) |
2993 | { | |
e610eaca | 2994 | arg = Flist (nargs - i, &arg_vector[i]); |
defb1411 SM |
2995 | i = nargs; |
2996 | } | |
2997 | else if (i < nargs) | |
e610eaca | 2998 | arg = arg_vector[i++]; |
b9598260 SM |
2999 | else if (!optional) |
3000 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); | |
3001 | else | |
e610eaca | 3002 | arg = Qnil; |
7200d79c | 3003 | |
b9598260 | 3004 | /* Bind the argument. */ |
876c194c | 3005 | if (!NILP (lexenv) && SYMBOLP (next)) |
b9598260 | 3006 | /* Lexically bind NEXT by adding it to the lexenv alist. */ |
e610eaca | 3007 | lexenv = Fcons (Fcons (next, arg), lexenv); |
b9598260 SM |
3008 | else |
3009 | /* Dynamically bind NEXT. */ | |
e610eaca | 3010 | specbind (next, arg); |
db9f0278 | 3011 | } |
db9f0278 JB |
3012 | } |
3013 | ||
9ab90667 | 3014 | if (!NILP (syms_left)) |
734d55a2 | 3015 | xsignal1 (Qinvalid_function, fun); |
9ab90667 | 3016 | else if (i < nargs) |
734d55a2 | 3017 | xsignal2 (Qwrong_number_of_arguments, fun, make_number (nargs)); |
db9f0278 | 3018 | |
b9598260 SM |
3019 | if (!EQ (lexenv, Vinternal_interpreter_environment)) |
3020 | /* Instantiate a new lexical environment. */ | |
3021 | specbind (Qinternal_interpreter_environment, lexenv); | |
3022 | ||
90165123 | 3023 | if (CONSP (fun)) |
9ab90667 | 3024 | val = Fprogn (XCDR (XCDR (fun))); |
db9f0278 | 3025 | else |
ca248607 RS |
3026 | { |
3027 | /* If we have not actually read the bytecode string | |
3028 | and constants vector yet, fetch them from the file. */ | |
845975f5 | 3029 | if (CONSP (AREF (fun, COMPILED_BYTECODE))) |
661c7d6e | 3030 | Ffetch_bytecode (fun); |
b9598260 SM |
3031 | val = exec_byte_code (AREF (fun, COMPILED_BYTECODE), |
3032 | AREF (fun, COMPILED_CONSTANTS), | |
3033 | AREF (fun, COMPILED_STACK_DEPTH), | |
3034 | Qnil, 0, 0); | |
ca248607 | 3035 | } |
177c0ea7 | 3036 | |
db9f0278 JB |
3037 | return unbind_to (count, val); |
3038 | } | |
661c7d6e KH |
3039 | |
3040 | DEFUN ("fetch-bytecode", Ffetch_bytecode, Sfetch_bytecode, | |
9dbc9081 PJ |
3041 | 1, 1, 0, |
3042 | doc: /* If byte-compiled OBJECT is lazy-loaded, fetch it now. */) | |
5842a27b | 3043 | (Lisp_Object object) |
661c7d6e KH |
3044 | { |
3045 | Lisp_Object tem; | |
3046 | ||
845975f5 | 3047 | if (COMPILEDP (object) && CONSP (AREF (object, COMPILED_BYTECODE))) |
661c7d6e | 3048 | { |
845975f5 | 3049 | tem = read_doc_string (AREF (object, COMPILED_BYTECODE)); |
5bbdb090 | 3050 | if (!CONSP (tem)) |
845975f5 SM |
3051 | { |
3052 | tem = AREF (object, COMPILED_BYTECODE); | |
3053 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
d5db4077 | 3054 | error ("Invalid byte code in %s", SDATA (XCAR (tem))); |
845975f5 SM |
3055 | else |
3056 | error ("Invalid byte code"); | |
3057 | } | |
3ae565b3 SM |
3058 | ASET (object, COMPILED_BYTECODE, XCAR (tem)); |
3059 | ASET (object, COMPILED_CONSTANTS, XCDR (tem)); | |
661c7d6e KH |
3060 | } |
3061 | return object; | |
3062 | } | |
db9f0278 | 3063 | \f |
475545b5 | 3064 | static void |
d3da34e0 | 3065 | grow_specpdl (void) |
db9f0278 | 3066 | { |
d311d28c PE |
3067 | register ptrdiff_t count = SPECPDL_INDEX (); |
3068 | ptrdiff_t max_size = min (max_specpdl_size, PTRDIFF_MAX); | |
98e8eae1 | 3069 | if (max_size <= specpdl_size) |
db9f0278 JB |
3070 | { |
3071 | if (max_specpdl_size < 400) | |
98e8eae1 PE |
3072 | max_size = max_specpdl_size = 400; |
3073 | if (max_size <= specpdl_size) | |
734d55a2 | 3074 | signal_error ("Variable binding depth exceeds max-specpdl-size", Qnil); |
db9f0278 | 3075 | } |
d311d28c | 3076 | specpdl = xpalloc (specpdl, &specpdl_size, 1, max_size, sizeof *specpdl); |
db9f0278 JB |
3077 | specpdl_ptr = specpdl + count; |
3078 | } | |
3079 | ||
f6d62986 | 3080 | /* `specpdl_ptr->symbol' is a field which describes which variable is |
4e2db1fe SM |
3081 | let-bound, so it can be properly undone when we unbind_to. |
3082 | It can have the following two shapes: | |
3083 | - SYMBOL : if it's a plain symbol, it means that we have let-bound | |
3084 | a symbol that is not buffer-local (at least at the time | |
3085 | the let binding started). Note also that it should not be | |
3086 | aliased (i.e. when let-binding V1 that's aliased to V2, we want | |
3087 | to record V2 here). | |
3088 | - (SYMBOL WHERE . BUFFER) : this means that it is a let-binding for | |
3089 | variable SYMBOL which can be buffer-local. WHERE tells us | |
3090 | which buffer is affected (or nil if the let-binding affects the | |
3091 | global value of the variable) and BUFFER tells us which buffer was | |
3092 | current (i.e. if WHERE is non-nil, then BUFFER==WHERE, otherwise | |
3093 | BUFFER did not yet have a buffer-local value). */ | |
3094 | ||
db9f0278 | 3095 | void |
d3da34e0 | 3096 | specbind (Lisp_Object symbol, Lisp_Object value) |
db9f0278 | 3097 | { |
ce5b453a SM |
3098 | struct Lisp_Symbol *sym; |
3099 | ||
b7826503 | 3100 | CHECK_SYMBOL (symbol); |
ce5b453a | 3101 | sym = XSYMBOL (symbol); |
db9f0278 JB |
3102 | if (specpdl_ptr == specpdl + specpdl_size) |
3103 | grow_specpdl (); | |
719177b3 | 3104 | |
ce5b453a SM |
3105 | start: |
3106 | switch (sym->redirect) | |
719177b3 | 3107 | { |
ce5b453a SM |
3108 | case SYMBOL_VARALIAS: |
3109 | sym = indirect_variable (sym); XSETSYMBOL (symbol, sym); goto start; | |
3110 | case SYMBOL_PLAINVAL: | |
bb8e180f AS |
3111 | /* The most common case is that of a non-constant symbol with a |
3112 | trivial value. Make that as fast as we can. */ | |
e46f2325 DA |
3113 | set_specpdl_symbol (symbol); |
3114 | set_specpdl_old_value (SYMBOL_VAL (sym)); | |
bb8e180f AS |
3115 | specpdl_ptr->func = NULL; |
3116 | ++specpdl_ptr; | |
3117 | if (!sym->constant) | |
3118 | SET_SYMBOL_VAL (sym, value); | |
3119 | else | |
3120 | set_internal (symbol, value, Qnil, 1); | |
3121 | break; | |
4e2db1fe SM |
3122 | case SYMBOL_LOCALIZED: |
3123 | if (SYMBOL_BLV (sym)->frame_local) | |
3124 | error ("Frame-local vars cannot be let-bound"); | |
3125 | case SYMBOL_FORWARDED: | |
ce5b453a SM |
3126 | { |
3127 | Lisp_Object ovalue = find_symbol_value (symbol); | |
3128 | specpdl_ptr->func = 0; | |
e46f2325 | 3129 | set_specpdl_old_value (ovalue); |
ce5b453a SM |
3130 | |
3131 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
3132 | || (EQ (SYMBOL_BLV (sym)->where, | |
3133 | SYMBOL_BLV (sym)->frame_local ? | |
3134 | Fselected_frame () : Fcurrent_buffer ()))); | |
3135 | ||
3136 | if (sym->redirect == SYMBOL_LOCALIZED | |
3137 | || BUFFER_OBJFWDP (SYMBOL_FWD (sym))) | |
3138 | { | |
3139 | Lisp_Object where, cur_buf = Fcurrent_buffer (); | |
3140 | ||
3141 | /* For a local variable, record both the symbol and which | |
3142 | buffer's or frame's value we are saving. */ | |
3143 | if (!NILP (Flocal_variable_p (symbol, Qnil))) | |
3144 | { | |
3145 | eassert (sym->redirect != SYMBOL_LOCALIZED | |
a04e2c62 | 3146 | || (blv_found (SYMBOL_BLV (sym)) |
ce5b453a SM |
3147 | && EQ (cur_buf, SYMBOL_BLV (sym)->where))); |
3148 | where = cur_buf; | |
3149 | } | |
3150 | else if (sym->redirect == SYMBOL_LOCALIZED | |
a04e2c62 | 3151 | && blv_found (SYMBOL_BLV (sym))) |
ce5b453a SM |
3152 | where = SYMBOL_BLV (sym)->where; |
3153 | else | |
3154 | where = Qnil; | |
3155 | ||
3156 | /* We're not using the `unused' slot in the specbinding | |
3157 | structure because this would mean we have to do more | |
3158 | work for simple variables. */ | |
3159 | /* FIXME: The third value `current_buffer' is only used in | |
3160 | let_shadows_buffer_binding_p which is itself only used | |
3161 | in set_internal for local_if_set. */ | |
4e2db1fe | 3162 | eassert (NILP (where) || EQ (where, cur_buf)); |
e46f2325 | 3163 | set_specpdl_symbol (Fcons (symbol, Fcons (where, cur_buf))); |
ce5b453a SM |
3164 | |
3165 | /* If SYMBOL is a per-buffer variable which doesn't have a | |
3166 | buffer-local value here, make the `let' change the global | |
3167 | value by changing the value of SYMBOL in all buffers not | |
3168 | having their own value. This is consistent with what | |
3169 | happens with other buffer-local variables. */ | |
3170 | if (NILP (where) | |
3171 | && sym->redirect == SYMBOL_FORWARDED) | |
3172 | { | |
3173 | eassert (BUFFER_OBJFWDP (SYMBOL_FWD (sym))); | |
3174 | ++specpdl_ptr; | |
3175 | Fset_default (symbol, value); | |
3176 | return; | |
3177 | } | |
3178 | } | |
3179 | else | |
e46f2325 | 3180 | set_specpdl_symbol (symbol); |
ce5b453a SM |
3181 | |
3182 | specpdl_ptr++; | |
94b612ad | 3183 | set_internal (symbol, value, Qnil, 1); |
ce5b453a SM |
3184 | break; |
3185 | } | |
1088b922 | 3186 | default: emacs_abort (); |
9ab90667 | 3187 | } |
db9f0278 JB |
3188 | } |
3189 | ||
3190 | void | |
d3da34e0 | 3191 | record_unwind_protect (Lisp_Object (*function) (Lisp_Object), Lisp_Object arg) |
db9f0278 JB |
3192 | { |
3193 | if (specpdl_ptr == specpdl + specpdl_size) | |
3194 | grow_specpdl (); | |
3195 | specpdl_ptr->func = function; | |
e46f2325 DA |
3196 | set_specpdl_symbol (Qnil); |
3197 | set_specpdl_old_value (arg); | |
db9f0278 JB |
3198 | specpdl_ptr++; |
3199 | } | |
3200 | ||
3201 | Lisp_Object | |
d311d28c | 3202 | unbind_to (ptrdiff_t count, Lisp_Object value) |
db9f0278 | 3203 | { |
5a073f50 KS |
3204 | Lisp_Object quitf = Vquit_flag; |
3205 | struct gcpro gcpro1, gcpro2; | |
db9f0278 | 3206 | |
5a073f50 | 3207 | GCPRO2 (value, quitf); |
db9f0278 JB |
3208 | Vquit_flag = Qnil; |
3209 | ||
3210 | while (specpdl_ptr != specpdl + count) | |
3211 | { | |
611a8f8c RS |
3212 | /* Copy the binding, and decrement specpdl_ptr, before we do |
3213 | the work to unbind it. We decrement first | |
3214 | so that an error in unbinding won't try to unbind | |
3215 | the same entry again, and we copy the binding first | |
3216 | in case more bindings are made during some of the code we run. */ | |
eb700b82 | 3217 | |
45f266dc DL |
3218 | struct specbinding this_binding; |
3219 | this_binding = *--specpdl_ptr; | |
611a8f8c RS |
3220 | |
3221 | if (this_binding.func != 0) | |
3222 | (*this_binding.func) (this_binding.old_value); | |
0967b4b0 GM |
3223 | /* If the symbol is a list, it is really (SYMBOL WHERE |
3224 | . CURRENT-BUFFER) where WHERE is either nil, a buffer, or a | |
3225 | frame. If WHERE is a buffer or frame, this indicates we | |
1b1acc13 PJ |
3226 | bound a variable that had a buffer-local or frame-local |
3227 | binding. WHERE nil means that the variable had the default | |
0967b4b0 | 3228 | value when it was bound. CURRENT-BUFFER is the buffer that |
bb8e180f | 3229 | was current when the variable was bound. */ |
611a8f8c | 3230 | else if (CONSP (this_binding.symbol)) |
719177b3 | 3231 | { |
eb700b82 | 3232 | Lisp_Object symbol, where; |
719177b3 | 3233 | |
611a8f8c RS |
3234 | symbol = XCAR (this_binding.symbol); |
3235 | where = XCAR (XCDR (this_binding.symbol)); | |
719177b3 | 3236 | |
eb700b82 | 3237 | if (NILP (where)) |
611a8f8c | 3238 | Fset_default (symbol, this_binding.old_value); |
94b612ad SM |
3239 | /* If `where' is non-nil, reset the value in the appropriate |
3240 | local binding, but only if that binding still exists. */ | |
4e2db1fe SM |
3241 | else if (BUFFERP (where) |
3242 | ? !NILP (Flocal_variable_p (symbol, where)) | |
e69b0960 | 3243 | : !NILP (Fassq (symbol, XFRAME (where)->param_alist))) |
4e2db1fe | 3244 | set_internal (symbol, this_binding.old_value, where, 1); |
719177b3 | 3245 | } |
94b612ad SM |
3246 | /* If variable has a trivial value (no forwarding), we can |
3247 | just set it. No need to check for constant symbols here, | |
3248 | since that was already done by specbind. */ | |
3249 | else if (XSYMBOL (this_binding.symbol)->redirect == SYMBOL_PLAINVAL) | |
3250 | SET_SYMBOL_VAL (XSYMBOL (this_binding.symbol), | |
3251 | this_binding.old_value); | |
db9f0278 | 3252 | else |
94b612ad SM |
3253 | /* NOTE: we only ever come here if make_local_foo was used for |
3254 | the first time on this var within this let. */ | |
3255 | Fset_default (this_binding.symbol, this_binding.old_value); | |
db9f0278 | 3256 | } |
177c0ea7 | 3257 | |
5a073f50 KS |
3258 | if (NILP (Vquit_flag) && !NILP (quitf)) |
3259 | Vquit_flag = quitf; | |
db9f0278 JB |
3260 | |
3261 | UNGCPRO; | |
db9f0278 JB |
3262 | return value; |
3263 | } | |
b9598260 | 3264 | |
4a330052 | 3265 | DEFUN ("special-variable-p", Fspecial_variable_p, Sspecial_variable_p, 1, 1, 0, |
b9598260 SM |
3266 | doc: /* Return non-nil if SYMBOL's global binding has been declared special. |
3267 | A special variable is one that will be bound dynamically, even in a | |
3268 | context where binding is lexical by default. */) | |
c566235d | 3269 | (Lisp_Object symbol) |
b9598260 SM |
3270 | { |
3271 | CHECK_SYMBOL (symbol); | |
3272 | return XSYMBOL (symbol)->declared_special ? Qt : Qnil; | |
3273 | } | |
3274 | ||
db9f0278 | 3275 | \f |
db9f0278 | 3276 | DEFUN ("backtrace-debug", Fbacktrace_debug, Sbacktrace_debug, 2, 2, 0, |
9dbc9081 PJ |
3277 | doc: /* Set the debug-on-exit flag of eval frame LEVEL levels down to FLAG. |
3278 | The debugger is entered when that frame exits, if the flag is non-nil. */) | |
5842a27b | 3279 | (Lisp_Object level, Lisp_Object flag) |
db9f0278 JB |
3280 | { |
3281 | register struct backtrace *backlist = backtrace_list; | |
d311d28c | 3282 | register EMACS_INT i; |
db9f0278 | 3283 | |
b7826503 | 3284 | CHECK_NUMBER (level); |
db9f0278 JB |
3285 | |
3286 | for (i = 0; backlist && i < XINT (level); i++) | |
3287 | { | |
3288 | backlist = backlist->next; | |
3289 | } | |
3290 | ||
3291 | if (backlist) | |
265a9e55 | 3292 | backlist->debug_on_exit = !NILP (flag); |
db9f0278 JB |
3293 | |
3294 | return flag; | |
3295 | } | |
3296 | ||
3297 | DEFUN ("backtrace", Fbacktrace, Sbacktrace, 0, 0, "", | |
9dbc9081 PJ |
3298 | doc: /* Print a trace of Lisp function calls currently active. |
3299 | Output stream used is value of `standard-output'. */) | |
5842a27b | 3300 | (void) |
db9f0278 JB |
3301 | { |
3302 | register struct backtrace *backlist = backtrace_list; | |
db9f0278 JB |
3303 | Lisp_Object tail; |
3304 | Lisp_Object tem; | |
db9f0278 | 3305 | struct gcpro gcpro1; |
d4b6d95d | 3306 | Lisp_Object old_print_level = Vprint_level; |
db9f0278 | 3307 | |
d4b6d95d LMI |
3308 | if (NILP (Vprint_level)) |
3309 | XSETFASTINT (Vprint_level, 8); | |
db9f0278 JB |
3310 | |
3311 | tail = Qnil; | |
3312 | GCPRO1 (tail); | |
3313 | ||
3314 | while (backlist) | |
3315 | { | |
3316 | write_string (backlist->debug_on_exit ? "* " : " ", 2); | |
44f230aa | 3317 | if (backlist->nargs == UNEVALLED) |
db9f0278 JB |
3318 | { |
3319 | Fprin1 (Fcons (*backlist->function, *backlist->args), Qnil); | |
b6703b02 | 3320 | write_string ("\n", -1); |
db9f0278 JB |
3321 | } |
3322 | else | |
3323 | { | |
3324 | tem = *backlist->function; | |
f6d62986 | 3325 | Fprin1 (tem, Qnil); /* This can QUIT. */ |
db9f0278 | 3326 | write_string ("(", -1); |
44f230aa SM |
3327 | if (backlist->nargs == MANY) |
3328 | { /* FIXME: Can this happen? */ | |
1882aa38 PE |
3329 | bool later_arg = 0; |
3330 | for (tail = *backlist->args; !NILP (tail); tail = Fcdr (tail)) | |
db9f0278 | 3331 | { |
1882aa38 PE |
3332 | if (later_arg) |
3333 | write_string (" ", -1); | |
db9f0278 | 3334 | Fprin1 (Fcar (tail), Qnil); |
1882aa38 | 3335 | later_arg = 1; |
db9f0278 JB |
3336 | } |
3337 | } | |
3338 | else | |
3339 | { | |
f66c7cf8 | 3340 | ptrdiff_t i; |
db9f0278 JB |
3341 | for (i = 0; i < backlist->nargs; i++) |
3342 | { | |
3343 | if (i) write_string (" ", -1); | |
3344 | Fprin1 (backlist->args[i], Qnil); | |
3345 | } | |
3346 | } | |
b6703b02 | 3347 | write_string (")\n", -1); |
db9f0278 | 3348 | } |
db9f0278 JB |
3349 | backlist = backlist->next; |
3350 | } | |
3351 | ||
d4b6d95d | 3352 | Vprint_level = old_print_level; |
db9f0278 JB |
3353 | UNGCPRO; |
3354 | return Qnil; | |
3355 | } | |
3356 | ||
17401c97 | 3357 | DEFUN ("backtrace-frame", Fbacktrace_frame, Sbacktrace_frame, 1, 1, NULL, |
9dbc9081 PJ |
3358 | doc: /* Return the function and arguments NFRAMES up from current execution point. |
3359 | If that frame has not evaluated the arguments yet (or is a special form), | |
3360 | the value is (nil FUNCTION ARG-FORMS...). | |
3361 | If that frame has evaluated its arguments and called its function already, | |
3362 | the value is (t FUNCTION ARG-VALUES...). | |
3363 | A &rest arg is represented as the tail of the list ARG-VALUES. | |
3364 | FUNCTION is whatever was supplied as car of evaluated list, | |
3365 | or a lambda expression for macro calls. | |
3366 | If NFRAMES is more than the number of frames, the value is nil. */) | |
5842a27b | 3367 | (Lisp_Object nframes) |
db9f0278 JB |
3368 | { |
3369 | register struct backtrace *backlist = backtrace_list; | |
5d5d959d | 3370 | register EMACS_INT i; |
db9f0278 JB |
3371 | Lisp_Object tem; |
3372 | ||
b7826503 | 3373 | CHECK_NATNUM (nframes); |
db9f0278 JB |
3374 | |
3375 | /* Find the frame requested. */ | |
b6703b02 | 3376 | for (i = 0; backlist && i < XFASTINT (nframes); i++) |
db9f0278 JB |
3377 | backlist = backlist->next; |
3378 | ||
3379 | if (!backlist) | |
3380 | return Qnil; | |
44f230aa | 3381 | if (backlist->nargs == UNEVALLED) |
db9f0278 JB |
3382 | return Fcons (Qnil, Fcons (*backlist->function, *backlist->args)); |
3383 | else | |
3384 | { | |
44f230aa | 3385 | if (backlist->nargs == MANY) /* FIXME: Can this happen? */ |
db9f0278 JB |
3386 | tem = *backlist->args; |
3387 | else | |
3388 | tem = Flist (backlist->nargs, backlist->args); | |
3389 | ||
3390 | return Fcons (Qt, Fcons (*backlist->function, tem)); | |
3391 | } | |
3392 | } | |
a2ff3819 | 3393 | |
db9f0278 | 3394 | \f |
244ed907 | 3395 | #if BYTE_MARK_STACK |
4ce0541e | 3396 | void |
d3da34e0 | 3397 | mark_backtrace (void) |
4ce0541e SM |
3398 | { |
3399 | register struct backtrace *backlist; | |
f66c7cf8 | 3400 | ptrdiff_t i; |
4ce0541e SM |
3401 | |
3402 | for (backlist = backtrace_list; backlist; backlist = backlist->next) | |
3403 | { | |
3404 | mark_object (*backlist->function); | |
3405 | ||
44f230aa SM |
3406 | if (backlist->nargs == UNEVALLED |
3407 | || backlist->nargs == MANY) /* FIXME: Can this happen? */ | |
c5101a77 | 3408 | i = 1; |
4ce0541e | 3409 | else |
c5101a77 PE |
3410 | i = backlist->nargs; |
3411 | while (i--) | |
4ce0541e SM |
3412 | mark_object (backlist->args[i]); |
3413 | } | |
3414 | } | |
244ed907 | 3415 | #endif |
4ce0541e | 3416 | |
dfcf069d | 3417 | void |
d3da34e0 | 3418 | syms_of_eval (void) |
db9f0278 | 3419 | { |
29208e82 | 3420 | DEFVAR_INT ("max-specpdl-size", max_specpdl_size, |
fb7ada5f | 3421 | doc: /* Limit on number of Lisp variable bindings and `unwind-protect's. |
9f5903bb | 3422 | If Lisp code tries to increase the total number past this amount, |
2520dc0c RS |
3423 | an error is signaled. |
3424 | You can safely use a value considerably larger than the default value, | |
3425 | if that proves inconveniently small. However, if you increase it too far, | |
3426 | Emacs could run out of memory trying to make the stack bigger. */); | |
db9f0278 | 3427 | |
29208e82 | 3428 | DEFVAR_INT ("max-lisp-eval-depth", max_lisp_eval_depth, |
fb7ada5f | 3429 | doc: /* Limit on depth in `eval', `apply' and `funcall' before error. |
2520dc0c RS |
3430 | |
3431 | This limit serves to catch infinite recursions for you before they cause | |
9dbc9081 PJ |
3432 | actual stack overflow in C, which would be fatal for Emacs. |
3433 | You can safely make it considerably larger than its default value, | |
2520dc0c RS |
3434 | if that proves inconveniently small. However, if you increase it too far, |
3435 | Emacs could overflow the real C stack, and crash. */); | |
db9f0278 | 3436 | |
29208e82 | 3437 | DEFVAR_LISP ("quit-flag", Vquit_flag, |
9dbc9081 | 3438 | doc: /* Non-nil causes `eval' to abort, unless `inhibit-quit' is non-nil. |
42ed718e RS |
3439 | If the value is t, that means do an ordinary quit. |
3440 | If the value equals `throw-on-input', that means quit by throwing | |
3441 | to the tag specified in `throw-on-input'; it's for handling `while-no-input'. | |
3442 | Typing C-g sets `quit-flag' to t, regardless of `inhibit-quit', | |
3443 | but `inhibit-quit' non-nil prevents anything from taking notice of that. */); | |
db9f0278 JB |
3444 | Vquit_flag = Qnil; |
3445 | ||
29208e82 | 3446 | DEFVAR_LISP ("inhibit-quit", Vinhibit_quit, |
9dbc9081 PJ |
3447 | doc: /* Non-nil inhibits C-g quitting from happening immediately. |
3448 | Note that `quit-flag' will still be set by typing C-g, | |
3449 | so a quit will be signaled as soon as `inhibit-quit' is nil. | |
3450 | To prevent this happening, set `quit-flag' to nil | |
3451 | before making `inhibit-quit' nil. */); | |
db9f0278 JB |
3452 | Vinhibit_quit = Qnil; |
3453 | ||
cd3520a4 JB |
3454 | DEFSYM (Qinhibit_quit, "inhibit-quit"); |
3455 | DEFSYM (Qautoload, "autoload"); | |
45b82ad0 | 3456 | DEFSYM (Qinhibit_debugger, "inhibit-debugger"); |
cd3520a4 JB |
3457 | DEFSYM (Qmacro, "macro"); |
3458 | DEFSYM (Qdeclare, "declare"); | |
177c0ea7 | 3459 | |
db9f0278 JB |
3460 | /* Note that the process handling also uses Qexit, but we don't want |
3461 | to staticpro it twice, so we just do it here. */ | |
cd3520a4 | 3462 | DEFSYM (Qexit, "exit"); |
b9598260 | 3463 | |
cd3520a4 JB |
3464 | DEFSYM (Qinteractive, "interactive"); |
3465 | DEFSYM (Qcommandp, "commandp"); | |
cd3520a4 JB |
3466 | DEFSYM (Qand_rest, "&rest"); |
3467 | DEFSYM (Qand_optional, "&optional"); | |
3468 | DEFSYM (Qclosure, "closure"); | |
3469 | DEFSYM (Qdebug, "debug"); | |
f01cbfdd | 3470 | |
45b82ad0 SM |
3471 | DEFVAR_LISP ("inhibit-debugger", Vinhibit_debugger, |
3472 | doc: /* Non-nil means never enter the debugger. | |
3473 | Normally set while the debugger is already active, to avoid recursive | |
3474 | invocations. */); | |
3475 | Vinhibit_debugger = Qnil; | |
3476 | ||
29208e82 | 3477 | DEFVAR_LISP ("debug-on-error", Vdebug_on_error, |
fb7ada5f | 3478 | doc: /* Non-nil means enter debugger if an error is signaled. |
9dbc9081 PJ |
3479 | Does not apply to errors handled by `condition-case' or those |
3480 | matched by `debug-ignored-errors'. | |
3481 | If the value is a list, an error only means to enter the debugger | |
3482 | if one of its condition symbols appears in the list. | |
3483 | When you evaluate an expression interactively, this variable | |
3484 | is temporarily non-nil if `eval-expression-debug-on-error' is non-nil. | |
fbbdcf2f | 3485 | The command `toggle-debug-on-error' toggles this. |
45b82ad0 | 3486 | See also the variable `debug-on-quit' and `inhibit-debugger'. */); |
128c0f66 | 3487 | Vdebug_on_error = Qnil; |
db9f0278 | 3488 | |
29208e82 | 3489 | DEFVAR_LISP ("debug-ignored-errors", Vdebug_ignored_errors, |
fb7ada5f | 3490 | doc: /* List of errors for which the debugger should not be called. |
9dbc9081 PJ |
3491 | Each element may be a condition-name or a regexp that matches error messages. |
3492 | If any element applies to a given error, that error skips the debugger | |
3493 | and just returns to top level. | |
3494 | This overrides the variable `debug-on-error'. | |
3495 | It does not apply to errors handled by `condition-case'. */); | |
fc950e09 KH |
3496 | Vdebug_ignored_errors = Qnil; |
3497 | ||
29208e82 | 3498 | DEFVAR_BOOL ("debug-on-quit", debug_on_quit, |
fb7ada5f | 3499 | doc: /* Non-nil means enter debugger if quit is signaled (C-g, for example). |
82fc29a1 | 3500 | Does not apply if quit is handled by a `condition-case'. */); |
db9f0278 JB |
3501 | debug_on_quit = 0; |
3502 | ||
29208e82 | 3503 | DEFVAR_BOOL ("debug-on-next-call", debug_on_next_call, |
9dbc9081 | 3504 | doc: /* Non-nil means enter debugger before next `eval', `apply' or `funcall'. */); |
db9f0278 | 3505 | |
29208e82 | 3506 | DEFVAR_BOOL ("debugger-may-continue", debugger_may_continue, |
9dbc9081 PJ |
3507 | doc: /* Non-nil means debugger may continue execution. |
3508 | This is nil when the debugger is called under circumstances where it | |
3509 | might not be safe to continue. */); | |
dac204bc | 3510 | debugger_may_continue = 1; |
556d7314 | 3511 | |
29208e82 | 3512 | DEFVAR_LISP ("debugger", Vdebugger, |
9dbc9081 PJ |
3513 | doc: /* Function to call to invoke debugger. |
3514 | If due to frame exit, args are `exit' and the value being returned; | |
3515 | this function's value will be returned instead of that. | |
3516 | If due to error, args are `error' and a list of the args to `signal'. | |
3517 | If due to `apply' or `funcall' entry, one arg, `lambda'. | |
3518 | If due to `eval' entry, one arg, t. */); | |
db9f0278 JB |
3519 | Vdebugger = Qnil; |
3520 | ||
29208e82 | 3521 | DEFVAR_LISP ("signal-hook-function", Vsignal_hook_function, |
9dbc9081 PJ |
3522 | doc: /* If non-nil, this is a function for `signal' to call. |
3523 | It receives the same arguments that `signal' was given. | |
3524 | The Edebug package uses this to regain control. */); | |
61ede770 RS |
3525 | Vsignal_hook_function = Qnil; |
3526 | ||
29208e82 | 3527 | DEFVAR_LISP ("debug-on-signal", Vdebug_on_signal, |
fb7ada5f | 3528 | doc: /* Non-nil means call the debugger regardless of condition handlers. |
9dbc9081 PJ |
3529 | Note that `debug-on-error', `debug-on-quit' and friends |
3530 | still determine whether to handle the particular condition. */); | |
57a6e758 | 3531 | Vdebug_on_signal = Qnil; |
61ede770 | 3532 | |
b38b1ec0 | 3533 | /* When lexical binding is being used, |
61b108cc | 3534 | Vinternal_interpreter_environment is non-nil, and contains an alist |
b38b1ec0 SM |
3535 | of lexically-bound variable, or (t), indicating an empty |
3536 | environment. The lisp name of this variable would be | |
3537 | `internal-interpreter-environment' if it weren't hidden. | |
3538 | Every element of this list can be either a cons (VAR . VAL) | |
3539 | specifying a lexical binding, or a single symbol VAR indicating | |
3540 | that this variable should use dynamic scoping. */ | |
61b108cc SM |
3541 | DEFSYM (Qinternal_interpreter_environment, |
3542 | "internal-interpreter-environment"); | |
b38b1ec0 SM |
3543 | DEFVAR_LISP ("internal-interpreter-environment", |
3544 | Vinternal_interpreter_environment, | |
b9598260 SM |
3545 | doc: /* If non-nil, the current lexical environment of the lisp interpreter. |
3546 | When lexical binding is not being used, this variable is nil. | |
3547 | A value of `(t)' indicates an empty environment, otherwise it is an | |
3548 | alist of active lexical bindings. */); | |
3549 | Vinternal_interpreter_environment = Qnil; | |
c80e3b4a | 3550 | /* Don't export this variable to Elisp, so no one can mess with it |
b38b1ec0 SM |
3551 | (Just imagine if someone makes it buffer-local). */ |
3552 | Funintern (Qinternal_interpreter_environment, Qnil); | |
b9598260 | 3553 | |
cd3520a4 | 3554 | DEFSYM (Vrun_hooks, "run-hooks"); |
db9f0278 JB |
3555 | |
3556 | staticpro (&Vautoload_queue); | |
3557 | Vautoload_queue = Qnil; | |
a2ff3819 GM |
3558 | staticpro (&Vsignaling_function); |
3559 | Vsignaling_function = Qnil; | |
db9f0278 | 3560 | |
d1f55f16 CY |
3561 | inhibit_lisp_code = Qnil; |
3562 | ||
db9f0278 JB |
3563 | defsubr (&Sor); |
3564 | defsubr (&Sand); | |
3565 | defsubr (&Sif); | |
3566 | defsubr (&Scond); | |
3567 | defsubr (&Sprogn); | |
3568 | defsubr (&Sprog1); | |
3569 | defsubr (&Sprog2); | |
3570 | defsubr (&Ssetq); | |
3571 | defsubr (&Squote); | |
3572 | defsubr (&Sfunction); | |
db9f0278 | 3573 | defsubr (&Sdefvar); |
19cebf5a | 3574 | defsubr (&Sdefvaralias); |
db9f0278 | 3575 | defsubr (&Sdefconst); |
513749ee | 3576 | defsubr (&Smake_var_non_special); |
db9f0278 JB |
3577 | defsubr (&Slet); |
3578 | defsubr (&SletX); | |
3579 | defsubr (&Swhile); | |
3580 | defsubr (&Smacroexpand); | |
3581 | defsubr (&Scatch); | |
3582 | defsubr (&Sthrow); | |
3583 | defsubr (&Sunwind_protect); | |
3584 | defsubr (&Scondition_case); | |
3585 | defsubr (&Ssignal); | |
3586 | defsubr (&Sinteractive_p); | |
4b664e76 | 3587 | defsubr (&Scalled_interactively_p); |
db9f0278 JB |
3588 | defsubr (&Scommandp); |
3589 | defsubr (&Sautoload); | |
7abaf5cc | 3590 | defsubr (&Sautoload_do_load); |
db9f0278 JB |
3591 | defsubr (&Seval); |
3592 | defsubr (&Sapply); | |
3593 | defsubr (&Sfuncall); | |
ff936e53 SM |
3594 | defsubr (&Srun_hooks); |
3595 | defsubr (&Srun_hook_with_args); | |
3596 | defsubr (&Srun_hook_with_args_until_success); | |
3597 | defsubr (&Srun_hook_with_args_until_failure); | |
f6d62986 | 3598 | defsubr (&Srun_hook_wrapped); |
661c7d6e | 3599 | defsubr (&Sfetch_bytecode); |
db9f0278 JB |
3600 | defsubr (&Sbacktrace_debug); |
3601 | defsubr (&Sbacktrace); | |
3602 | defsubr (&Sbacktrace_frame); | |
4a330052 | 3603 | defsubr (&Sspecial_variable_p); |
b9598260 | 3604 | defsubr (&Sfunctionp); |
db9f0278 | 3605 | } |