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e282f286 | 1 | /* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
6dbd0af5 MD |
47 | /* This file is read twice in order to produce debugging versions of |
48 | * scm_ceval and scm_apply. These functions, scm_deval and | |
49 | * scm_dapply, are produced when we define the preprocessor macro | |
50 | * DEVAL. The file is divided into sections which are treated | |
51 | * differently with respect to DEVAL. The heads of these sections are | |
52 | * marked with the string "SECTION:". | |
53 | */ | |
54 | ||
55 | ||
56 | /* SECTION: This code is compiled once. | |
0f2d19dd JB |
57 | */ |
58 | ||
59 | #ifndef DEVAL | |
60 | ||
d16332b3 | 61 | /* We need this to get the definitions for HAVE_ALLOCA_H, etc. */ |
a0599745 | 62 | #include "libguile/scmconfig.h" |
d16332b3 | 63 | |
48b96f4b JB |
64 | /* AIX requires this to be the first thing in the file. The #pragma |
65 | directive is indented so pre-ANSI compilers will ignore it, rather | |
66 | than choke on it. */ | |
5862b540 | 67 | #ifndef __GNUC__ |
48b96f4b JB |
68 | # if HAVE_ALLOCA_H |
69 | # include <alloca.h> | |
70 | # else | |
71 | # ifdef _AIX | |
72 | #pragma alloca | |
73 | # else | |
74 | # ifndef alloca /* predefined by HP cc +Olibcalls */ | |
75 | char *alloca (); | |
76 | # endif | |
77 | # endif | |
78 | # endif | |
79 | #endif | |
80 | ||
0f2d19dd | 81 | #include <stdio.h> |
a0599745 MD |
82 | #include "libguile/_scm.h" |
83 | #include "libguile/debug.h" | |
84 | #include "libguile/alist.h" | |
85 | #include "libguile/eq.h" | |
86 | #include "libguile/continuations.h" | |
87 | #include "libguile/throw.h" | |
88 | #include "libguile/smob.h" | |
89 | #include "libguile/macros.h" | |
90 | #include "libguile/procprop.h" | |
91 | #include "libguile/hashtab.h" | |
92 | #include "libguile/hash.h" | |
93 | #include "libguile/srcprop.h" | |
94 | #include "libguile/stackchk.h" | |
95 | #include "libguile/objects.h" | |
96 | #include "libguile/async.h" | |
97 | #include "libguile/feature.h" | |
98 | #include "libguile/modules.h" | |
99 | #include "libguile/ports.h" | |
100 | #include "libguile/root.h" | |
101 | #include "libguile/vectors.h" | |
102 | ||
103 | #include "libguile/validate.h" | |
104 | #include "libguile/eval.h" | |
89efbff4 | 105 | |
61364ba6 MD |
106 | SCM (*scm_memoize_method) (SCM, SCM); |
107 | ||
0f2d19dd JB |
108 | \f |
109 | ||
6dbd0af5 MD |
110 | /* The evaluator contains a plethora of EVAL symbols. |
111 | * This is an attempt at explanation. | |
112 | * | |
113 | * The following macros should be used in code which is read twice | |
114 | * (where the choice of evaluator is hard soldered): | |
115 | * | |
116 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
117 | * Originally, it is defined to scm_ceval, but is redefined to | |
118 | * scm_deval during the second pass. | |
119 | * | |
120 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
121 | * only side effects of expressions matter. All immediates are | |
122 | * ignored. | |
123 | * | |
6cb702da | 124 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
125 | * immediate. (This macro never calls an evaluator.) |
126 | * | |
127 | * EVALCAR evaluates the car of an expression. | |
128 | * | |
129 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
130 | * car is a lisp cell. | |
131 | * | |
132 | * The following macros should be used in code which is read once | |
133 | * (where the choice of evaluator is dynamic): | |
134 | * | |
6cb702da | 135 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
136 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
137 | * mode. | |
138 | * | |
6cb702da | 139 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
140 | * depending on the debugging mode. |
141 | * | |
142 | * The main motivation for keeping this plethora is efficiency | |
143 | * together with maintainability (=> locality of code). | |
144 | */ | |
145 | ||
6cb702da | 146 | #define SCM_CEVAL scm_ceval |
7d2b68a8 | 147 | #define SIDEVAL(x, env) if (SCM_NIMP (x)) SCM_CEVAL((x), (env)) |
6cb702da | 148 | |
7d2b68a8 MD |
149 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR (x)) \ |
150 | ? *scm_lookupcar (x, env, 1) \ | |
151 | : SCM_CEVAL (SCM_CAR (x), env)) | |
0f2d19dd | 152 | |
7d2b68a8 MD |
153 | #define EVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \ |
154 | ? (SCM_IMP (SCM_CAR (x)) \ | |
155 | ? SCM_EVALIM (SCM_CAR (x), env) \ | |
156 | : SCM_GLOC_VAL (SCM_CAR (x))) \ | |
157 | : EVALCELLCAR (x, env)) | |
0f2d19dd | 158 | |
e2806c10 | 159 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
160 | |
161 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 162 | |
0f2d19dd | 163 | SCM * |
6e8d25a6 | 164 | scm_ilookup (SCM iloc, SCM env) |
0f2d19dd JB |
165 | { |
166 | register int ir = SCM_IFRAME (iloc); | |
167 | register SCM er = env; | |
168 | for (; 0 != ir; --ir) | |
169 | er = SCM_CDR (er); | |
170 | er = SCM_CAR (er); | |
171 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
172 | er = SCM_CDR (er); | |
173 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
174 | return SCM_CDRLOC (er); |
175 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
176 | } |
177 | #endif | |
178 | ||
f8769b1d MV |
179 | #ifdef USE_THREADS |
180 | ||
181 | /* The Lookup Car Race | |
182 | - by Eva Luator | |
183 | ||
184 | Memoization of variables and special forms is done while executing | |
185 | the code for the first time. As long as there is only one thread | |
186 | everything is fine, but as soon as two threads execute the same | |
187 | code concurrently `for the first time' they can come into conflict. | |
188 | ||
189 | This memoization includes rewriting variable references into more | |
190 | efficient forms and expanding macros. Furthermore, macro expansion | |
191 | includes `compiling' special forms like `let', `cond', etc. into | |
192 | tree-code instructions. | |
193 | ||
194 | There shouldn't normally be a problem with memoizing local and | |
195 | global variable references (into ilocs and glocs), because all | |
196 | threads will mutate the code in *exactly* the same way and (if I | |
197 | read the C code correctly) it is not possible to observe a half-way | |
198 | mutated cons cell. The lookup procedure can handle this | |
199 | transparently without any critical sections. | |
200 | ||
201 | It is different with macro expansion, because macro expansion | |
202 | happens outside of the lookup procedure and can't be | |
203 | undone. Therefore it can't cope with it. It has to indicate | |
204 | failure when it detects a lost race and hope that the caller can | |
205 | handle it. Luckily, it turns out that this is the case. | |
206 | ||
207 | An example to illustrate this: Suppose that the follwing form will | |
208 | be memoized concurrently by two threads | |
209 | ||
210 | (let ((x 12)) x) | |
211 | ||
212 | Let's first examine the lookup of X in the body. The first thread | |
213 | decides that it has to find the symbol "x" in the environment and | |
214 | starts to scan it. Then the other thread takes over and actually | |
215 | overtakes the first. It looks up "x" and substitutes an | |
216 | appropriate iloc for it. Now the first thread continues and | |
217 | completes its lookup. It comes to exactly the same conclusions as | |
218 | the second one and could - without much ado - just overwrite the | |
219 | iloc with the same iloc. | |
220 | ||
221 | But let's see what will happen when the race occurs while looking | |
222 | up the symbol "let" at the start of the form. It could happen that | |
223 | the second thread interrupts the lookup of the first thread and not | |
224 | only substitutes a gloc for it but goes right ahead and replaces it | |
225 | with the compiled form (#@let* (x 12) x). Now, when the first | |
226 | thread completes its lookup, it would replace the #@let* with a | |
227 | gloc pointing to the "let" binding, effectively reverting the form | |
228 | to (let (x 12) x). This is wrong. It has to detect that it has | |
229 | lost the race and the evaluator has to reconsider the changed form | |
230 | completely. | |
231 | ||
232 | This race condition could be resolved with some kind of traffic | |
233 | light (like mutexes) around scm_lookupcar, but I think that it is | |
234 | best to avoid them in this case. They would serialize memoization | |
235 | completely and because lookup involves calling arbitrary Scheme | |
236 | code (via the lookup-thunk), threads could be blocked for an | |
237 | arbitrary amount of time or even deadlock. But with the current | |
238 | solution a lot of unnecessary work is potentially done. */ | |
239 | ||
240 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
241 | return NULL to indicate a failed lookup due to some race conditions | |
242 | between threads. This only happens when VLOC is the first cell of | |
243 | a special form that will eventually be memoized (like `let', etc.) | |
244 | In that case the whole lookup is bogus and the caller has to | |
245 | reconsider the complete special form. | |
246 | ||
247 | SCM_LOOKUPCAR is still there, of course. It just calls | |
248 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
249 | should only be called when it is known that VLOC is not the first | |
250 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
26d5b9b4 MD |
251 | for NULL. I think I've found the only places where this |
252 | applies. */ | |
f8769b1d MV |
253 | |
254 | #endif /* USE_THREADS */ | |
1cc91f1b | 255 | |
26d5b9b4 MD |
256 | /* scm_lookupcar returns a pointer to this when a variable could not |
257 | be found and it should not throw an error. Never assign to this. | |
258 | */ | |
3201d763 | 259 | static SCM undef_object = SCM_UNDEFINED; |
26d5b9b4 | 260 | |
f25f761d GH |
261 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
262 | ||
d0b7bad7 | 263 | #ifdef USE_THREADS |
8ecf1f13 | 264 | static SCM * |
26d5b9b4 | 265 | scm_lookupcar1 (SCM vloc, SCM genv, int check) |
d0b7bad7 MD |
266 | #else |
267 | SCM * | |
26d5b9b4 | 268 | scm_lookupcar (SCM vloc, SCM genv, int check) |
d0b7bad7 | 269 | #endif |
0f2d19dd JB |
270 | { |
271 | SCM env = genv; | |
e3173f93 JB |
272 | register SCM *al, fl, var = SCM_CAR (vloc); |
273 | #ifdef USE_THREADS | |
274 | register SCM var2 = var; | |
275 | #endif | |
0f2d19dd JB |
276 | #ifdef MEMOIZE_LOCALS |
277 | register SCM iloc = SCM_ILOC00; | |
278 | #endif | |
279 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
280 | { | |
cf498326 | 281 | if (SCM_TRUE_P (scm_procedure_p (SCM_CAR (env)))) |
0f2d19dd | 282 | break; |
a23afe53 | 283 | al = SCM_CARLOC (env); |
0f2d19dd JB |
284 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
285 | { | |
286 | if (SCM_NCONSP (fl)) | |
33b97402 | 287 | { |
cf498326 | 288 | if (SCM_EQ_P (fl, var)) |
0f2d19dd JB |
289 | { |
290 | #ifdef MEMOIZE_LOCALS | |
f8769b1d | 291 | #ifdef USE_THREADS |
cf498326 | 292 | if (! SCM_EQ_P (SCM_CAR (vloc), var)) |
f8769b1d MV |
293 | goto race; |
294 | #endif | |
3201d763 | 295 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (iloc) + SCM_ICDR); |
0f2d19dd | 296 | #endif |
a23afe53 | 297 | return SCM_CDRLOC (*al); |
0f2d19dd | 298 | } |
33b97402 MD |
299 | else |
300 | break; | |
301 | } | |
a23afe53 | 302 | al = SCM_CDRLOC (*al); |
cf498326 | 303 | if (SCM_EQ_P (SCM_CAR (fl), var)) |
0f2d19dd JB |
304 | { |
305 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 306 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
307 | if (SCM_UNBNDP (SCM_CAR (*al))) |
308 | { | |
309 | env = SCM_EOL; | |
310 | goto errout; | |
311 | } | |
f8769b1d MV |
312 | #endif |
313 | #ifdef USE_THREADS | |
314 | if (SCM_CAR (vloc) != var) | |
315 | goto race; | |
0f2d19dd | 316 | #endif |
a23afe53 | 317 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 318 | #endif |
a23afe53 | 319 | return SCM_CARLOC (*al); |
0f2d19dd JB |
320 | } |
321 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 322 | iloc = SCM_PACK (SCM_UNPACK (iloc) + SCM_IDINC); |
0f2d19dd JB |
323 | #endif |
324 | } | |
325 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 326 | iloc = SCM_PACK ((~SCM_IDSTMSK) & (SCM_UNPACK(iloc) + SCM_IFRINC)); |
0f2d19dd JB |
327 | #endif |
328 | } | |
329 | { | |
330 | SCM top_thunk, vcell; | |
331 | if (SCM_NIMP(env)) | |
332 | { | |
333 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
334 | env = SCM_CDR (env); | |
335 | } | |
336 | else | |
337 | top_thunk = SCM_BOOL_F; | |
338 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
cf498326 | 339 | if (SCM_FALSEP (vcell)) |
0f2d19dd JB |
340 | goto errout; |
341 | else | |
342 | var = vcell; | |
343 | } | |
cf7c17e9 | 344 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
345 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
346 | { | |
347 | var = SCM_CAR (var); | |
348 | errout: | |
f5bf2977 | 349 | /* scm_everr (vloc, genv,...) */ |
26d5b9b4 | 350 | if (check) |
f25f761d GH |
351 | { |
352 | if (SCM_NULLP (env)) | |
70d63753 | 353 | scm_error (scm_unbound_variable_key, NULL, "Unbound variable: ~S", |
f25f761d GH |
354 | scm_cons (var, SCM_EOL), SCM_BOOL_F); |
355 | else | |
70d63753 | 356 | scm_misc_error (NULL, "Damaged environment: ~S", |
f25f761d GH |
357 | scm_cons (var, SCM_EOL)); |
358 | } | |
26d5b9b4 | 359 | else |
3201d763 | 360 | return &undef_object; |
0f2d19dd JB |
361 | } |
362 | #endif | |
f8769b1d MV |
363 | #ifdef USE_THREADS |
364 | if (SCM_CAR (vloc) != var2) | |
365 | { | |
366 | /* Some other thread has changed the very cell we are working | |
367 | on. In effect, it must have done our job or messed it up | |
368 | completely. */ | |
369 | race: | |
370 | var = SCM_CAR (vloc); | |
3201d763 | 371 | if (SCM_ITAG3 (var) == scm_tc3_cons_gloc) |
f8769b1d MV |
372 | return SCM_GLOC_VAL_LOC (var); |
373 | #ifdef MEMOIZE_LOCALS | |
f1267706 | 374 | if ((SCM_UNPACK (var) & 127) == (127 & SCM_UNPACK (SCM_ILOC00))) |
f8769b1d MV |
375 | return scm_ilookup (var, genv); |
376 | #endif | |
377 | /* We can't cope with anything else than glocs and ilocs. When | |
378 | a special form has been memoized (i.e. `let' into `#@let') we | |
379 | return NULL and expect the calling function to do the right | |
380 | thing. For the evaluator, this means going back and redoing | |
381 | the dispatch on the car of the form. */ | |
382 | return NULL; | |
383 | } | |
384 | #endif /* USE_THREADS */ | |
385 | ||
3201d763 | 386 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (var) + scm_tc3_cons_gloc); |
0f2d19dd | 387 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 388 | * but syntax or something.... */ |
a23afe53 | 389 | return SCM_CDRLOC (var); |
0f2d19dd JB |
390 | } |
391 | ||
f8769b1d MV |
392 | #ifdef USE_THREADS |
393 | SCM * | |
6e8d25a6 | 394 | scm_lookupcar (SCM vloc, SCM genv, int check) |
f8769b1d | 395 | { |
26d5b9b4 | 396 | SCM *loc = scm_lookupcar1 (vloc, genv, check); |
f8769b1d MV |
397 | if (loc == NULL) |
398 | abort (); | |
399 | return loc; | |
400 | } | |
f8769b1d MV |
401 | #endif |
402 | ||
0f2d19dd | 403 | #define unmemocar scm_unmemocar |
1cc91f1b | 404 | |
0f2d19dd | 405 | SCM |
6e8d25a6 | 406 | scm_unmemocar (SCM form, SCM env) |
0f2d19dd | 407 | { |
0f2d19dd JB |
408 | SCM c; |
409 | ||
410 | if (SCM_IMP (form)) | |
411 | return form; | |
412 | c = SCM_CAR (form); | |
b0c54567 | 413 | if (SCM_ITAG3 (c) == scm_tc3_cons_gloc) |
a963f787 | 414 | SCM_SETCAR (form, SCM_GLOC_SYM (c)); |
0f2d19dd | 415 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 416 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
417 | else if (SCM_ILOCP (c)) |
418 | { | |
b0c54567 DH |
419 | int ir; |
420 | ||
0f2d19dd JB |
421 | for (ir = SCM_IFRAME (c); ir != 0; --ir) |
422 | env = SCM_CDR (env); | |
423 | env = SCM_CAR (SCM_CAR (env)); | |
424 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
425 | env = SCM_CDR (env); | |
a23afe53 | 426 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 427 | } |
6dbd0af5 | 428 | #endif |
0f2d19dd JB |
429 | #endif |
430 | return form; | |
431 | } | |
432 | ||
1cc91f1b | 433 | |
0f2d19dd | 434 | SCM |
6e8d25a6 | 435 | scm_eval_car (SCM pair, SCM env) |
0f2d19dd | 436 | { |
6cb702da | 437 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
438 | } |
439 | ||
440 | \f | |
441 | /* | |
442 | * The following rewrite expressions and | |
443 | * some memoized forms have different syntax | |
444 | */ | |
445 | ||
3eeba8d4 JB |
446 | const char scm_s_expression[] = "missing or extra expression"; |
447 | const char scm_s_test[] = "bad test"; | |
448 | const char scm_s_body[] = "bad body"; | |
449 | const char scm_s_bindings[] = "bad bindings"; | |
450 | const char scm_s_variable[] = "bad variable"; | |
451 | const char scm_s_clauses[] = "bad or missing clauses"; | |
452 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 453 | |
81123e6d MD |
454 | SCM scm_sym_dot, scm_sym_arrow, scm_sym_else; |
455 | SCM scm_sym_unquote, scm_sym_uq_splicing, scm_sym_apply; | |
456 | ||
457 | SCM scm_f_apply; | |
b8229a3b | 458 | |
6dbd0af5 | 459 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
460 | SCM scm_sym_enter_frame, scm_sym_apply_frame, scm_sym_exit_frame; |
461 | SCM scm_sym_trace; | |
6dbd0af5 | 462 | #endif |
0f2d19dd JB |
463 | |
464 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
465 | ||
466 | ||
1cc91f1b | 467 | |
7866a09b | 468 | static void bodycheck (SCM xorig, SCM *bodyloc, const char *what); |
1cc91f1b | 469 | |
0f2d19dd | 470 | static void |
6e8d25a6 | 471 | bodycheck (SCM xorig, SCM *bodyloc, const char *what) |
0f2d19dd | 472 | { |
6cb702da | 473 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, scm_s_expression); |
0f2d19dd JB |
474 | } |
475 | ||
26d5b9b4 MD |
476 | /* Check that the body denoted by XORIG is valid and rewrite it into |
477 | its internal form. The internal form of a body is just the body | |
478 | itself, but prefixed with an ISYM that denotes to what kind of | |
479 | outer construct this body belongs. A lambda body starts with | |
480 | SCM_IM_LAMBDA, for example, a body of a let starts with SCM_IM_LET, | |
481 | etc. The one exception is a body that belongs to a letrec that has | |
482 | been formed by rewriting internal defines: it starts with | |
483 | SCM_IM_DEFINE. */ | |
484 | ||
485 | /* XXX - Besides controlling the rewriting of internal defines, the | |
486 | additional ISYM could be used for improved error messages. | |
487 | This is not done yet. */ | |
488 | ||
489 | static SCM | |
6e8d25a6 | 490 | scm_m_body (SCM op, SCM xorig, const char *what) |
26d5b9b4 MD |
491 | { |
492 | ASRTSYNTAX (scm_ilength (xorig) >= 1, scm_s_expression); | |
493 | ||
494 | /* Don't add another ISYM if one is present already. */ | |
495 | if (SCM_ISYMP (SCM_CAR (xorig))) | |
496 | return xorig; | |
497 | ||
498 | /* Retain possible doc string. */ | |
499 | if (SCM_IMP (SCM_CAR(xorig)) || SCM_NCONSP (SCM_CAR (xorig))) | |
500 | { | |
501 | if (SCM_NNULLP (SCM_CDR(xorig))) | |
502 | return scm_cons (SCM_CAR (xorig), | |
503 | scm_m_body (op, SCM_CDR(xorig), what)); | |
504 | return xorig; | |
505 | } | |
506 | ||
507 | return scm_cons2 (op, SCM_CAR (xorig), SCM_CDR(xorig)); | |
508 | } | |
509 | ||
b8229a3b | 510 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
2f0d1375 | 511 | SCM_GLOBAL_SYMBOL(scm_sym_quote, s_quote); |
1cc91f1b | 512 | |
0f2d19dd | 513 | SCM |
6e8d25a6 | 514 | scm_m_quote (SCM xorig, SCM env) |
0f2d19dd | 515 | { |
26d5b9b4 MD |
516 | SCM x = scm_copy_tree (SCM_CDR (xorig)); |
517 | ||
6cb702da | 518 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 519 | xorig, scm_s_expression, s_quote); |
3a3111a8 | 520 | return scm_cons (SCM_IM_QUOTE, x); |
0f2d19dd JB |
521 | } |
522 | ||
523 | ||
1cc91f1b | 524 | |
b8229a3b | 525 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
2f0d1375 | 526 | SCM_GLOBAL_SYMBOL(scm_sym_begin, s_begin); |
b8229a3b | 527 | |
0f2d19dd | 528 | SCM |
6e8d25a6 | 529 | scm_m_begin (SCM xorig, SCM env) |
0f2d19dd | 530 | { |
6cb702da | 531 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 532 | xorig, scm_s_expression, s_begin); |
3a3111a8 | 533 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
0f2d19dd JB |
534 | } |
535 | ||
b8229a3b | 536 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
2f0d1375 | 537 | SCM_GLOBAL_SYMBOL(scm_sym_if, s_if); |
1cc91f1b | 538 | |
0f2d19dd | 539 | SCM |
6e8d25a6 | 540 | scm_m_if (SCM xorig, SCM env) |
0f2d19dd JB |
541 | { |
542 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 543 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
3a3111a8 | 544 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
0f2d19dd JB |
545 | } |
546 | ||
547 | ||
89efbff4 MD |
548 | /* Will go into the RnRS module when Guile is factorized. |
549 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
550 | const char scm_s_set_x[] = "set!"; | |
551 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 552 | |
0f2d19dd | 553 | SCM |
6e8d25a6 | 554 | scm_m_set_x (SCM xorig, SCM env) |
0f2d19dd | 555 | { |
6dbd0af5 | 556 | SCM x = SCM_CDR (xorig); |
89efbff4 | 557 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
cabe682c | 558 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 | 559 | xorig, scm_s_variable, scm_s_set_x); |
3a3111a8 | 560 | return scm_cons (SCM_IM_SET_X, x); |
0f2d19dd JB |
561 | } |
562 | ||
563 | ||
564 | #if 0 | |
1cc91f1b | 565 | |
0f2d19dd | 566 | SCM |
6e8d25a6 | 567 | scm_m_vref (SCM xorig, SCM env) |
0f2d19dd JB |
568 | { |
569 | SCM x = SCM_CDR (xorig); | |
6cb702da | 570 | SCM_ASSYNT (1 == scm_ilength (x), xorig, scm_s_expression, s_vref); |
0f2d19dd JB |
571 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) |
572 | { | |
f5bf2977 | 573 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 | 574 | scm_misc_error (NULL, |
70d63753 | 575 | "Bad variable: ~S", |
523f5266 | 576 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); |
0f2d19dd | 577 | } |
6cb702da MD |
578 | SCM_ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), |
579 | xorig, scm_s_variable, s_vref); | |
0f2d19dd JB |
580 | return scm_cons (IM_VREF, x); |
581 | } | |
582 | ||
583 | ||
1cc91f1b | 584 | |
0f2d19dd | 585 | SCM |
6e8d25a6 | 586 | scm_m_vset (SCM xorig, SCM env) |
0f2d19dd JB |
587 | { |
588 | SCM x = SCM_CDR (xorig); | |
6cb702da MD |
589 | SCM_ASSYNT (3 == scm_ilength (x), xorig, scm_s_expression, s_vset); |
590 | SCM_ASSYNT ((DEFSCM_VARIABLEP (SCM_CAR (x)) | |
591 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
592 | xorig, scm_s_variable, s_vset); | |
0f2d19dd JB |
593 | return scm_cons (IM_VSET, x); |
594 | } | |
595 | #endif | |
596 | ||
597 | ||
b8229a3b | 598 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
2f0d1375 | 599 | SCM_GLOBAL_SYMBOL(scm_sym_and, s_and); |
1cc91f1b | 600 | |
0f2d19dd | 601 | SCM |
6e8d25a6 | 602 | scm_m_and (SCM xorig, SCM env) |
0f2d19dd JB |
603 | { |
604 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 605 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd | 606 | if (len >= 1) |
3a3111a8 | 607 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); |
0f2d19dd JB |
608 | else |
609 | return SCM_BOOL_T; | |
610 | } | |
611 | ||
b8229a3b | 612 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
2f0d1375 | 613 | SCM_GLOBAL_SYMBOL(scm_sym_or,s_or); |
1cc91f1b | 614 | |
0f2d19dd | 615 | SCM |
6e8d25a6 | 616 | scm_m_or (SCM xorig, SCM env) |
0f2d19dd JB |
617 | { |
618 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 619 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd | 620 | if (len >= 1) |
3a3111a8 | 621 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); |
0f2d19dd JB |
622 | else |
623 | return SCM_BOOL_F; | |
624 | } | |
625 | ||
626 | ||
b8229a3b | 627 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
2f0d1375 | 628 | SCM_GLOBAL_SYMBOL(scm_sym_case, s_case); |
1cc91f1b | 629 | |
0f2d19dd | 630 | SCM |
6e8d25a6 | 631 | scm_m_case (SCM xorig, SCM env) |
0f2d19dd | 632 | { |
26d5b9b4 | 633 | SCM proc, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
b8229a3b | 634 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
635 | while (SCM_NIMP (x = SCM_CDR (x))) |
636 | { | |
637 | proc = SCM_CAR (x); | |
b8229a3b | 638 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da | 639 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
cf498326 | 640 | || SCM_EQ_P (scm_sym_else, SCM_CAR (proc)), |
b8229a3b | 641 | xorig, scm_s_clauses, s_case); |
0f2d19dd | 642 | } |
3a3111a8 | 643 | return scm_cons (SCM_IM_CASE, cdrx); |
0f2d19dd JB |
644 | } |
645 | ||
646 | ||
b8229a3b | 647 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
2f0d1375 | 648 | SCM_GLOBAL_SYMBOL(scm_sym_cond, s_cond); |
b8229a3b | 649 | |
1cc91f1b | 650 | |
0f2d19dd | 651 | SCM |
6e8d25a6 | 652 | scm_m_cond (SCM xorig, SCM env) |
0f2d19dd | 653 | { |
26d5b9b4 | 654 | SCM arg1, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
0f2d19dd | 655 | int len = scm_ilength (x); |
b8229a3b | 656 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
657 | while (SCM_NIMP (x)) |
658 | { | |
659 | arg1 = SCM_CAR (x); | |
660 | len = scm_ilength (arg1); | |
b8229a3b | 661 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
cf498326 | 662 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (arg1))) |
0f2d19dd | 663 | { |
6cb702da | 664 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 665 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 666 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd | 667 | } |
cf498326 | 668 | if (len >= 2 && SCM_EQ_P (scm_sym_arrow, SCM_CAR (SCM_CDR (arg1)))) |
6cb702da | 669 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 670 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
671 | x = SCM_CDR (x); |
672 | } | |
3a3111a8 | 673 | return scm_cons (SCM_IM_COND, cdrx); |
0f2d19dd JB |
674 | } |
675 | ||
b8229a3b | 676 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
2f0d1375 | 677 | SCM_GLOBAL_SYMBOL(scm_sym_lambda, s_lambda); |
1cc91f1b | 678 | |
0f2d19dd | 679 | SCM |
6e8d25a6 | 680 | scm_m_lambda (SCM xorig, SCM env) |
0f2d19dd JB |
681 | { |
682 | SCM proc, x = SCM_CDR (xorig); | |
26d5b9b4 | 683 | if (scm_ilength (x) < 2) |
0f2d19dd JB |
684 | goto badforms; |
685 | proc = SCM_CAR (x); | |
33b97402 MD |
686 | if (SCM_NULLP (proc)) |
687 | goto memlambda; | |
cf498326 | 688 | if (SCM_EQ_P (SCM_IM_LET, proc)) /* named let */ |
26d5b9b4 | 689 | goto memlambda; |
33b97402 MD |
690 | if (SCM_IMP (proc)) |
691 | goto badforms; | |
692 | if (SCM_SYMBOLP (proc)) | |
693 | goto memlambda; | |
694 | if (SCM_NCONSP (proc)) | |
695 | goto badforms; | |
696 | while (SCM_NIMP (proc)) | |
0f2d19dd | 697 | { |
33b97402 MD |
698 | if (SCM_NCONSP (proc)) |
699 | { | |
0f2d19dd | 700 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
701 | goto badforms; |
702 | else | |
703 | goto memlambda; | |
704 | } | |
0c95b57d | 705 | if (!SCM_SYMBOLP (SCM_CAR (proc))) |
0f2d19dd JB |
706 | goto badforms; |
707 | proc = SCM_CDR (proc); | |
708 | } | |
ff467021 | 709 | if (SCM_NNULLP (proc)) |
26d5b9b4 MD |
710 | { |
711 | badforms: | |
712 | scm_wta (xorig, scm_s_formals, s_lambda); | |
713 | } | |
714 | ||
715 | memlambda: | |
3a3111a8 MD |
716 | return scm_cons2 (SCM_IM_LAMBDA, SCM_CAR (x), |
717 | scm_m_body (SCM_IM_LAMBDA, SCM_CDR (x), s_lambda)); | |
0f2d19dd JB |
718 | } |
719 | ||
b8229a3b | 720 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
2f0d1375 | 721 | SCM_GLOBAL_SYMBOL(scm_sym_letstar,s_letstar); |
0f2d19dd | 722 | |
1cc91f1b | 723 | |
0f2d19dd | 724 | SCM |
6e8d25a6 | 725 | scm_m_letstar (SCM xorig, SCM env) |
0f2d19dd JB |
726 | { |
727 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
728 | int len = scm_ilength (x); | |
b8229a3b | 729 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 730 | proc = SCM_CAR (x); |
b8229a3b | 731 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
ff467021 | 732 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
733 | { |
734 | arg1 = SCM_CAR (proc); | |
b8229a3b | 735 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
0c95b57d | 736 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, s_letstar); |
0f2d19dd | 737 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 738 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
739 | proc = SCM_CDR (proc); |
740 | } | |
741 | x = scm_cons (vars, SCM_CDR (x)); | |
26d5b9b4 | 742 | |
3a3111a8 MD |
743 | return scm_cons2 (SCM_IM_LETSTAR, SCM_CAR (x), |
744 | scm_m_body (SCM_IM_LETSTAR, SCM_CDR (x), s_letstar)); | |
0f2d19dd JB |
745 | } |
746 | ||
747 | /* DO gets the most radically altered syntax | |
748 | (do ((<var1> <init1> <step1>) | |
749 | (<var2> <init2>) | |
750 | ... ) | |
751 | (<test> <return>) | |
752 | <body>) | |
753 | ;; becomes | |
754 | (do_mem (varn ... var2 var1) | |
755 | (<init1> <init2> ... <initn>) | |
756 | (<test> <return>) | |
757 | (<body>) | |
758 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
759 | */ | |
760 | ||
b8229a3b | 761 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
2f0d1375 | 762 | SCM_GLOBAL_SYMBOL(scm_sym_do, s_do); |
1cc91f1b | 763 | |
0f2d19dd | 764 | SCM |
6e8d25a6 | 765 | scm_m_do (SCM xorig, SCM env) |
0f2d19dd JB |
766 | { |
767 | SCM x = SCM_CDR (xorig), arg1, proc; | |
768 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
769 | SCM *initloc = &inits, *steploc = &steps; | |
770 | int len = scm_ilength (x); | |
6cb702da | 771 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 772 | proc = SCM_CAR (x); |
6cb702da | 773 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
ff467021 | 774 | while (SCM_NIMP(proc)) |
0f2d19dd JB |
775 | { |
776 | arg1 = SCM_CAR (proc); | |
777 | len = scm_ilength (arg1); | |
6cb702da | 778 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
0c95b57d | 779 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, "do"); |
0f2d19dd JB |
780 | /* vars reversed here, inits and steps reversed at evaluation */ |
781 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
782 | arg1 = SCM_CDR (arg1); | |
783 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 784 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
785 | arg1 = SCM_CDR (arg1); |
786 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 787 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
788 | proc = SCM_CDR (proc); |
789 | } | |
790 | x = SCM_CDR (x); | |
6cb702da | 791 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
792 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
793 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 794 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
3a3111a8 | 795 | return scm_cons (SCM_IM_DO, x); |
0f2d19dd JB |
796 | } |
797 | ||
6dbd0af5 MD |
798 | /* evalcar is small version of inline EVALCAR when we don't care about |
799 | * speed | |
800 | */ | |
801 | #define evalcar scm_eval_car | |
0f2d19dd | 802 | |
1cc91f1b | 803 | |
1bbd0b84 | 804 | static SCM iqq (SCM form, SCM env, int depth); |
1cc91f1b | 805 | |
b8229a3b | 806 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
2f0d1375 | 807 | SCM_GLOBAL_SYMBOL(scm_sym_quasiquote, s_quasiquote); |
b8229a3b MS |
808 | |
809 | SCM | |
6e8d25a6 | 810 | scm_m_quasiquote (SCM xorig, SCM env) |
b8229a3b MS |
811 | { |
812 | SCM x = SCM_CDR (xorig); | |
813 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
814 | return iqq (SCM_CAR (x), env, 1); | |
815 | } | |
816 | ||
817 | ||
0f2d19dd | 818 | static SCM |
1bbd0b84 | 819 | iqq (SCM form,SCM env,int depth) |
0f2d19dd JB |
820 | { |
821 | SCM tmp; | |
822 | int edepth = depth; | |
ff467021 JB |
823 | if (SCM_IMP(form)) |
824 | return form; | |
0f2d19dd JB |
825 | if (SCM_VECTORP (form)) |
826 | { | |
827 | long i = SCM_LENGTH (form); | |
828 | SCM *data = SCM_VELTS (form); | |
829 | tmp = SCM_EOL; | |
830 | for (; --i >= 0;) | |
831 | tmp = scm_cons (data[i], tmp); | |
832 | return scm_vector (iqq (tmp, env, depth)); | |
833 | } | |
ff467021 JB |
834 | if (SCM_NCONSP(form)) |
835 | return form; | |
0f2d19dd | 836 | tmp = SCM_CAR (form); |
cf498326 | 837 | if (SCM_EQ_P (scm_sym_quasiquote, tmp)) |
0f2d19dd JB |
838 | { |
839 | depth++; | |
840 | goto label; | |
841 | } | |
cf498326 | 842 | if (SCM_EQ_P (scm_sym_unquote, tmp)) |
0f2d19dd JB |
843 | { |
844 | --depth; | |
845 | label: | |
846 | form = SCM_CDR (form); | |
0c95b57d GB |
847 | SCM_ASSERT (SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
848 | form, SCM_ARG1, s_quasiquote); | |
0f2d19dd JB |
849 | if (0 == depth) |
850 | return evalcar (form, env); | |
851 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
852 | } | |
cf498326 | 853 | if (SCM_NIMP (tmp) && (SCM_EQ_P (scm_sym_uq_splicing, SCM_CAR (tmp)))) |
0f2d19dd JB |
854 | { |
855 | tmp = SCM_CDR (tmp); | |
856 | if (0 == --edepth) | |
857 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
858 | } | |
859 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
860 | } | |
861 | ||
862 | /* Here are acros which return values rather than code. */ | |
863 | ||
a570e93a MD |
864 | SCM_SYNTAX (s_delay, "delay", scm_makmmacro, scm_m_delay); |
865 | SCM_GLOBAL_SYMBOL (scm_sym_delay, s_delay); | |
1cc91f1b | 866 | |
0f2d19dd | 867 | SCM |
6e8d25a6 | 868 | scm_m_delay (SCM xorig, SCM env) |
0f2d19dd | 869 | { |
6cb702da | 870 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
a570e93a | 871 | return scm_cons2 (SCM_IM_DELAY, SCM_EOL, SCM_CDR (xorig)); |
0f2d19dd JB |
872 | } |
873 | ||
1cc91f1b | 874 | |
b8229a3b | 875 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
2f0d1375 | 876 | SCM_GLOBAL_SYMBOL(scm_sym_define, s_define); |
1cc91f1b | 877 | |
0f2d19dd | 878 | SCM |
6e8d25a6 | 879 | scm_m_define (SCM x, SCM env) |
0f2d19dd JB |
880 | { |
881 | SCM proc, arg1 = x; | |
882 | x = SCM_CDR (x); | |
6cb702da | 883 | /* SCM_ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ |
b8229a3b | 884 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
885 | proc = SCM_CAR (x); |
886 | x = SCM_CDR (x); | |
0c95b57d | 887 | while (SCM_CONSP (proc)) |
0f2d19dd | 888 | { /* nested define syntax */ |
2f0d1375 | 889 | x = scm_cons (scm_cons2 (scm_sym_lambda, SCM_CDR (proc), x), SCM_EOL); |
0f2d19dd JB |
890 | proc = SCM_CAR (proc); |
891 | } | |
0c95b57d | 892 | SCM_ASSYNT (SCM_SYMBOLP (proc), |
b8229a3b MS |
893 | arg1, scm_s_variable, s_define); |
894 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
895 | if (SCM_TOP_LEVEL (env)) |
896 | { | |
897 | x = evalcar (x, env); | |
6dbd0af5 | 898 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
899 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
900 | { | |
901 | arg1 = x; | |
902 | proc: | |
903 | if (SCM_CLOSUREP (arg1) | |
904 | /* Only the first definition determines the name. */ | |
cf498326 | 905 | && SCM_FALSEP (scm_procedure_property (arg1, scm_sym_name))) |
2f0d1375 | 906 | scm_set_procedure_property_x (arg1, scm_sym_name, proc); |
80ea260c | 907 | else if (SCM_TYP16 (arg1) == scm_tc16_macro |
cf498326 | 908 | && !SCM_EQ_P (SCM_CDR (arg1), arg1)) |
80ea260c MD |
909 | { |
910 | arg1 = SCM_CDR (arg1); | |
911 | goto proc; | |
912 | } | |
913 | } | |
6dbd0af5 | 914 | #endif |
6cb702da | 915 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
0f2d19dd | 916 | #if 0 |
cf7c17e9 | 917 | #ifndef SCM_RECKLESS |
3201d763 | 918 | if (SCM_NIMP (SCM_CDR (arg1)) && (SCM_SNAME (SCM_CDR (arg1)) == proc) |
0f2d19dd JB |
919 | && (SCM_CDR (arg1) != x)) |
920 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
921 | else | |
922 | #endif | |
923 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
924 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 925 | #endif |
a23afe53 | 926 | SCM_SETCDR (arg1, x); |
0f2d19dd | 927 | #ifdef SICP |
2f0d1375 | 928 | return scm_cons2 (scm_sym_quote, SCM_CAR (arg1), SCM_EOL); |
0f2d19dd JB |
929 | #else |
930 | return SCM_UNSPECIFIED; | |
931 | #endif | |
932 | } | |
933 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
934 | } | |
6dbd0af5 | 935 | |
0f2d19dd JB |
936 | /* end of acros */ |
937 | ||
26d5b9b4 | 938 | static SCM |
6e8d25a6 | 939 | scm_m_letrec1 (SCM op, SCM imm, SCM xorig, SCM env) |
0f2d19dd JB |
940 | { |
941 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
942 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
943 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
944 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
945 | ||
0f2d19dd | 946 | proc = SCM_CAR (x); |
6cb702da | 947 | ASRTSYNTAX (scm_ilength (proc) >= 1, scm_s_bindings); |
0f2d19dd JB |
948 | do |
949 | { | |
950 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
951 | arg1 = SCM_CAR (proc); | |
6cb702da | 952 | ASRTSYNTAX (2 == scm_ilength (arg1), scm_s_bindings); |
0c95b57d | 953 | ASRTSYNTAX (SCM_SYMBOLP (SCM_CAR (arg1)), |
26d5b9b4 | 954 | scm_s_variable); |
0f2d19dd JB |
955 | vars = scm_cons (SCM_CAR (arg1), vars); |
956 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 957 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd | 958 | } |
ff467021 | 959 | while (SCM_NIMP (proc = SCM_CDR (proc))); |
26d5b9b4 | 960 | |
3a3111a8 MD |
961 | return scm_cons2 (op, vars, |
962 | scm_cons (inits, scm_m_body (imm, SCM_CDR (x), what))); | |
0f2d19dd JB |
963 | } |
964 | ||
26d5b9b4 | 965 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
2f0d1375 | 966 | SCM_GLOBAL_SYMBOL(scm_sym_letrec, s_letrec); |
26d5b9b4 MD |
967 | |
968 | SCM | |
6e8d25a6 | 969 | scm_m_letrec (SCM xorig, SCM env) |
26d5b9b4 MD |
970 | { |
971 | SCM x = SCM_CDR (xorig); | |
972 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_letrec); | |
973 | ||
974 | if (SCM_NULLP (SCM_CAR (x))) /* null binding, let* faster */ | |
3a3111a8 MD |
975 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), SCM_EOL, |
976 | scm_m_body (SCM_IM_LETREC, | |
977 | SCM_CDR (x), | |
978 | s_letrec)), | |
26d5b9b4 MD |
979 | env); |
980 | else | |
981 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LETREC, xorig, env); | |
982 | } | |
1cc91f1b | 983 | |
b8229a3b | 984 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
2f0d1375 | 985 | SCM_GLOBAL_SYMBOL(scm_sym_let, s_let); |
b8229a3b | 986 | |
0f2d19dd | 987 | SCM |
6e8d25a6 | 988 | scm_m_let (SCM xorig, SCM env) |
0f2d19dd JB |
989 | { |
990 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
991 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
992 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
993 | ||
b8229a3b | 994 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
995 | proc = SCM_CAR (x); |
996 | if (SCM_NULLP (proc) | |
0c95b57d | 997 | || (SCM_CONSP (proc) |
26d5b9b4 MD |
998 | && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) |
999 | { | |
1000 | /* null or single binding, let* is faster */ | |
3a3111a8 MD |
1001 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), proc, |
1002 | scm_m_body (SCM_IM_LET, | |
1003 | SCM_CDR (x), | |
1004 | s_let)), | |
26d5b9b4 MD |
1005 | env); |
1006 | } | |
1007 | ||
b8229a3b | 1008 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
26d5b9b4 MD |
1009 | if (SCM_CONSP (proc)) |
1010 | { | |
1011 | /* plain let, proc is <bindings> */ | |
1012 | return scm_m_letrec1 (SCM_IM_LET, SCM_IM_LET, xorig, env); | |
1013 | } | |
1014 | ||
0f2d19dd | 1015 | if (!SCM_SYMBOLP (proc)) |
b8229a3b | 1016 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
1017 | name = proc; /* named let, build equiv letrec */ |
1018 | x = SCM_CDR (x); | |
b8229a3b | 1019 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
26d5b9b4 | 1020 | proc = SCM_CAR (x); /* bindings list */ |
b8229a3b | 1021 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
ff467021 | 1022 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
1023 | { /* vars and inits both in order */ |
1024 | arg1 = SCM_CAR (proc); | |
b8229a3b | 1025 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
0c95b57d | 1026 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 1027 | xorig, scm_s_variable, s_let); |
0f2d19dd | 1028 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 1029 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 1030 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 1031 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
1032 | proc = SCM_CDR (proc); |
1033 | } | |
26d5b9b4 | 1034 | |
2f0d1375 | 1035 | proc = scm_cons2 (scm_sym_lambda, vars, |
26d5b9b4 | 1036 | scm_m_body (SCM_IM_LET, SCM_CDR (x), "let")); |
2f0d1375 | 1037 | proc = scm_cons2 (scm_sym_let, scm_cons (scm_cons2 (name, proc, SCM_EOL), |
26d5b9b4 MD |
1038 | SCM_EOL), |
1039 | scm_acons (name, inits, SCM_EOL)); | |
1040 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LET, proc, env); | |
0f2d19dd JB |
1041 | } |
1042 | ||
1043 | ||
81123e6d MD |
1044 | SCM_SYNTAX (s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
1045 | SCM_GLOBAL_SYMBOL (scm_sym_atapply, s_atapply); | |
1046 | SCM_GLOBAL_SYMBOL (scm_sym_apply, s_atapply + 1); | |
1cc91f1b | 1047 | |
0f2d19dd | 1048 | SCM |
6e8d25a6 | 1049 | scm_m_apply (SCM xorig, SCM env) |
0f2d19dd | 1050 | { |
6cb702da | 1051 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 1052 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
1053 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1054 | } | |
1055 | ||
b8229a3b MS |
1056 | |
1057 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
2f0d1375 | 1058 | SCM_GLOBAL_SYMBOL(scm_sym_atcall_cc,s_atcall_cc); |
0f2d19dd | 1059 | |
1cc91f1b | 1060 | |
0f2d19dd | 1061 | SCM |
6e8d25a6 | 1062 | scm_m_cont (SCM xorig, SCM env) |
0f2d19dd | 1063 | { |
6cb702da | 1064 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1065 | xorig, scm_s_expression, s_atcall_cc); |
3a3111a8 | 1066 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
0f2d19dd JB |
1067 | } |
1068 | ||
73b64342 MD |
1069 | /* Multi-language support */ |
1070 | ||
43a912cf MD |
1071 | SCM scm_lisp_nil; |
1072 | SCM scm_lisp_t; | |
73b64342 MD |
1073 | |
1074 | SCM_SYNTAX (s_nil_cond, "nil-cond", scm_makmmacro, scm_m_nil_cond); | |
1075 | ||
1076 | SCM | |
1077 | scm_m_nil_cond (SCM xorig, SCM env) | |
1078 | { | |
1079 | int len = scm_ilength (SCM_CDR (xorig)); | |
1080 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1081 | scm_s_expression, "nil-cond"); | |
1082 | return scm_cons (SCM_IM_NIL_COND, SCM_CDR (xorig)); | |
1083 | } | |
1084 | ||
1085 | SCM_SYNTAX (s_nil_ify, "nil-ify", scm_makmmacro, scm_m_nil_ify); | |
1086 | ||
1087 | SCM | |
1088 | scm_m_nil_ify (SCM xorig, SCM env) | |
1089 | { | |
1090 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1091 | xorig, scm_s_expression, "nil-ify"); | |
1092 | return scm_cons (SCM_IM_NIL_IFY, SCM_CDR (xorig)); | |
1093 | } | |
1094 | ||
1095 | SCM_SYNTAX (s_t_ify, "t-ify", scm_makmmacro, scm_m_t_ify); | |
1096 | ||
1097 | SCM | |
1098 | scm_m_t_ify (SCM xorig, SCM env) | |
1099 | { | |
1100 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1101 | xorig, scm_s_expression, "t-ify"); | |
1102 | return scm_cons (SCM_IM_T_IFY, SCM_CDR (xorig)); | |
1103 | } | |
1104 | ||
1105 | SCM_SYNTAX (s_0_cond, "0-cond", scm_makmmacro, scm_m_0_cond); | |
1106 | ||
1107 | SCM | |
1108 | scm_m_0_cond (SCM xorig, SCM env) | |
1109 | { | |
1110 | int len = scm_ilength (SCM_CDR (xorig)); | |
1111 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1112 | scm_s_expression, "0-cond"); | |
1113 | return scm_cons (SCM_IM_0_COND, SCM_CDR (xorig)); | |
1114 | } | |
1115 | ||
1116 | SCM_SYNTAX (s_0_ify, "0-ify", scm_makmmacro, scm_m_0_ify); | |
1117 | ||
1118 | SCM | |
1119 | scm_m_0_ify (SCM xorig, SCM env) | |
1120 | { | |
1121 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1122 | xorig, scm_s_expression, "0-ify"); | |
1123 | return scm_cons (SCM_IM_0_IFY, SCM_CDR (xorig)); | |
1124 | } | |
1125 | ||
1126 | SCM_SYNTAX (s_1_ify, "1-ify", scm_makmmacro, scm_m_1_ify); | |
1127 | ||
1128 | SCM | |
1129 | scm_m_1_ify (SCM xorig, SCM env) | |
1130 | { | |
1131 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1132 | xorig, scm_s_expression, "1-ify"); | |
1133 | return scm_cons (SCM_IM_1_IFY, SCM_CDR (xorig)); | |
1134 | } | |
1135 | ||
1136 | SCM_SYNTAX (s_atfop, "@fop", scm_makmmacro, scm_m_atfop); | |
1137 | ||
1138 | SCM | |
1139 | scm_m_atfop (SCM xorig, SCM env) | |
1140 | { | |
1141 | SCM x = SCM_CDR (xorig), vcell; | |
1142 | SCM_ASSYNT (scm_ilength (x) >= 1, xorig, scm_s_expression, "@fop"); | |
1143 | vcell = scm_symbol_fref (SCM_CAR (x)); | |
0c95b57d | 1144 | SCM_ASSYNT (SCM_CONSP (vcell), x, |
73b64342 | 1145 | "Symbol's function definition is void", NULL); |
3201d763 | 1146 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (vcell) + scm_tc3_cons_gloc); |
73b64342 MD |
1147 | return x; |
1148 | } | |
1149 | ||
1150 | SCM_SYNTAX (s_atbind, "@bind", scm_makmmacro, scm_m_atbind); | |
1151 | ||
1152 | SCM | |
1153 | scm_m_atbind (SCM xorig, SCM env) | |
1154 | { | |
1155 | SCM x = SCM_CDR (xorig); | |
1156 | SCM_ASSYNT (scm_ilength (x) > 1, xorig, scm_s_expression, "@bind"); | |
1157 | ||
1158 | if (SCM_IMP (env)) | |
1159 | env = SCM_BOOL_F; | |
1160 | else | |
1161 | { | |
1162 | while (SCM_NIMP (SCM_CDR (env))) | |
1163 | env = SCM_CDR (env); | |
1164 | env = SCM_CAR (env); | |
1165 | if (SCM_CONSP (env)) | |
1166 | env = SCM_BOOL_F; | |
1167 | } | |
1168 | ||
1169 | x = SCM_CAR (x); | |
1170 | while (SCM_NIMP (x)) | |
1171 | { | |
3201d763 | 1172 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (scm_sym2vcell (SCM_CAR (x), env, SCM_BOOL_T)) + scm_tc3_cons_gloc); |
73b64342 MD |
1173 | x = SCM_CDR (x); |
1174 | } | |
1175 | return scm_cons (SCM_IM_BIND, SCM_CDR (xorig)); | |
1176 | } | |
73b64342 | 1177 | |
26d5b9b4 MD |
1178 | SCM |
1179 | scm_m_expand_body (SCM xorig, SCM env) | |
1180 | { | |
1181 | SCM form, x = SCM_CDR (xorig), defs = SCM_EOL; | |
1182 | char *what = SCM_ISYMCHARS (SCM_CAR (xorig)) + 2; | |
1183 | ||
1184 | while (SCM_NIMP (x)) | |
1185 | { | |
1186 | form = SCM_CAR (x); | |
1187 | if (SCM_IMP (form) || SCM_NCONSP (form)) | |
1188 | break; | |
1189 | if (SCM_IMP (SCM_CAR (form))) | |
1190 | break; | |
1191 | if (!SCM_SYMBOLP (SCM_CAR (form))) | |
1192 | break; | |
1193 | ||
3a3111a8 MD |
1194 | form = scm_macroexp (scm_cons_source (form, |
1195 | SCM_CAR (form), | |
1196 | SCM_CDR (form)), | |
1197 | env); | |
26d5b9b4 | 1198 | |
cf498326 | 1199 | if (SCM_EQ_P (SCM_IM_DEFINE, SCM_CAR (form))) |
26d5b9b4 MD |
1200 | { |
1201 | defs = scm_cons (SCM_CDR (form), defs); | |
1202 | x = SCM_CDR(x); | |
1203 | } | |
1204 | else if (SCM_NIMP(defs)) | |
1205 | { | |
1206 | break; | |
1207 | } | |
cf498326 | 1208 | else if (SCM_EQ_P (SCM_IM_BEGIN, SCM_CAR (form))) |
26d5b9b4 MD |
1209 | { |
1210 | x = scm_append (scm_cons2 (SCM_CDR (form), SCM_CDR (x), SCM_EOL)); | |
1211 | } | |
1212 | else | |
1213 | { | |
1214 | x = scm_cons (form, SCM_CDR(x)); | |
1215 | break; | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | SCM_ASSYNT (SCM_NIMP (x), SCM_CDR (xorig), scm_s_body, what); | |
1220 | if (SCM_NIMP (defs)) | |
1221 | { | |
1222 | x = scm_cons (scm_m_letrec1 (SCM_IM_LETREC, | |
1223 | SCM_IM_DEFINE, | |
2f0d1375 | 1224 | scm_cons2 (scm_sym_define, defs, x), |
26d5b9b4 MD |
1225 | env), |
1226 | SCM_EOL); | |
1227 | } | |
1228 | ||
1229 | SCM_DEFER_INTS; | |
1230 | SCM_SETCAR (xorig, SCM_CAR (x)); | |
1231 | SCM_SETCDR (xorig, SCM_CDR (x)); | |
1232 | SCM_ALLOW_INTS; | |
1233 | ||
1234 | return xorig; | |
1235 | } | |
1236 | ||
1237 | SCM | |
1238 | scm_macroexp (SCM x, SCM env) | |
1239 | { | |
1240 | SCM res, proc; | |
1241 | ||
1242 | /* Don't bother to produce error messages here. We get them when we | |
1243 | eventually execute the code for real. */ | |
1244 | ||
1245 | macro_tail: | |
1246 | if (SCM_IMP (SCM_CAR (x)) || !SCM_SYMBOLP (SCM_CAR (x))) | |
1247 | return x; | |
1248 | ||
1249 | #ifdef USE_THREADS | |
1250 | { | |
1251 | SCM *proc_ptr = scm_lookupcar1 (x, env, 0); | |
1252 | if (proc_ptr == NULL) | |
1253 | { | |
1254 | /* We have lost the race. */ | |
1255 | goto macro_tail; | |
1256 | } | |
1257 | proc = *proc_ptr; | |
1258 | } | |
1259 | #else | |
1260 | proc = *scm_lookupcar (x, env, 0); | |
1261 | #endif | |
1262 | ||
1263 | /* Only handle memoizing macros. `Acros' and `macros' are really | |
1264 | special forms and should not be evaluated here. */ | |
1265 | ||
1266 | if (SCM_IMP (proc) | |
1267 | || scm_tc16_macro != SCM_TYP16 (proc) | |
f1267706 | 1268 | || (int) (SCM_UNPACK_CAR (proc) >> 16) != 2) |
26d5b9b4 MD |
1269 | return x; |
1270 | ||
1271 | unmemocar (x, env); | |
1272 | res = scm_apply (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1273 | ||
1274 | if (scm_ilength (res) <= 0) | |
1275 | res = scm_cons2 (SCM_IM_BEGIN, res, SCM_EOL); | |
1276 | ||
26d5b9b4 MD |
1277 | SCM_DEFER_INTS; |
1278 | SCM_SETCAR (x, SCM_CAR (res)); | |
1279 | SCM_SETCDR (x, SCM_CDR (res)); | |
1280 | SCM_ALLOW_INTS; | |
1281 | ||
1282 | goto macro_tail; | |
1283 | } | |
73b64342 | 1284 | |
6dbd0af5 MD |
1285 | /* scm_unmemocopy takes a memoized expression together with its |
1286 | * environment and rewrites it to its original form. Thus, it is the | |
1287 | * inversion of the rewrite rules above. The procedure is not | |
1288 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1289 | * code of a closure, in scm_procedure_source, in display_frame when |
1290 | * generating the source for a stackframe in a backtrace, and in | |
1291 | * display_expression. | |
6dbd0af5 MD |
1292 | */ |
1293 | ||
26d5b9b4 MD |
1294 | /* We should introduce an anti-macro interface so that it is possible |
1295 | * to plug in transformers in both directions from other compilation | |
1296 | * units. unmemocopy could then dispatch to anti-macro transformers. | |
1297 | * (Those transformers could perhaps be written in slightly more | |
1298 | * readable style... :) | |
1299 | */ | |
1300 | ||
f1267706 | 1301 | #define SCM_BIT8(x) (127 & SCM_UNPACK (x)) |
c209c88e | 1302 | |
6dbd0af5 | 1303 | static SCM |
1bbd0b84 | 1304 | unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1305 | { |
1306 | SCM ls, z; | |
1307 | #ifdef DEBUG_EXTENSIONS | |
1308 | SCM p; | |
1309 | #endif | |
1310 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1311 | return x; | |
1312 | #ifdef DEBUG_EXTENSIONS | |
1313 | p = scm_whash_lookup (scm_source_whash, x); | |
1314 | #endif | |
1315 | switch (SCM_TYP7 (x)) | |
1316 | { | |
c209c88e | 1317 | case SCM_BIT8(SCM_IM_AND): |
2f0d1375 | 1318 | ls = z = scm_cons (scm_sym_and, SCM_UNSPECIFIED); |
6dbd0af5 | 1319 | break; |
c209c88e | 1320 | case SCM_BIT8(SCM_IM_BEGIN): |
2f0d1375 | 1321 | ls = z = scm_cons (scm_sym_begin, SCM_UNSPECIFIED); |
6dbd0af5 | 1322 | break; |
c209c88e | 1323 | case SCM_BIT8(SCM_IM_CASE): |
2f0d1375 | 1324 | ls = z = scm_cons (scm_sym_case, SCM_UNSPECIFIED); |
6dbd0af5 | 1325 | break; |
c209c88e | 1326 | case SCM_BIT8(SCM_IM_COND): |
2f0d1375 | 1327 | ls = z = scm_cons (scm_sym_cond, SCM_UNSPECIFIED); |
6dbd0af5 | 1328 | break; |
c209c88e | 1329 | case SCM_BIT8(SCM_IM_DO): |
2f0d1375 | 1330 | ls = scm_cons (scm_sym_do, SCM_UNSPECIFIED); |
6dbd0af5 | 1331 | goto transform; |
c209c88e | 1332 | case SCM_BIT8(SCM_IM_IF): |
2f0d1375 | 1333 | ls = z = scm_cons (scm_sym_if, SCM_UNSPECIFIED); |
6dbd0af5 | 1334 | break; |
c209c88e | 1335 | case SCM_BIT8(SCM_IM_LET): |
2f0d1375 | 1336 | ls = scm_cons (scm_sym_let, SCM_UNSPECIFIED); |
6dbd0af5 | 1337 | goto transform; |
c209c88e | 1338 | case SCM_BIT8(SCM_IM_LETREC): |
6dbd0af5 MD |
1339 | { |
1340 | SCM f, v, e, s; | |
2f0d1375 | 1341 | ls = scm_cons (scm_sym_letrec, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1342 | transform: |
1343 | x = SCM_CDR (x); | |
26d5b9b4 | 1344 | /* binding names */ |
6dbd0af5 MD |
1345 | f = v = SCM_CAR (x); |
1346 | x = SCM_CDR (x); | |
e2806c10 | 1347 | z = EXTEND_ENV (f, SCM_EOL, env); |
26d5b9b4 | 1348 | /* inits */ |
6dbd0af5 | 1349 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
cf498326 | 1350 | SCM_EQ_P (SCM_CAR (ls), scm_sym_letrec) ? z : env)); |
6dbd0af5 | 1351 | env = z; |
26d5b9b4 | 1352 | /* increments */ |
cf498326 | 1353 | s = SCM_EQ_P (SCM_CAR (ls), scm_sym_do) |
6dbd0af5 MD |
1354 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) |
1355 | : f; | |
26d5b9b4 | 1356 | /* build transformed binding list */ |
6dbd0af5 MD |
1357 | z = SCM_EOL; |
1358 | do | |
1359 | { | |
1360 | z = scm_acons (SCM_CAR (v), | |
1361 | scm_cons (SCM_CAR (e), | |
cf498326 | 1362 | SCM_EQ_P (SCM_CAR (s), SCM_CAR (v)) |
6dbd0af5 MD |
1363 | ? SCM_EOL |
1364 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1365 | z); | |
1366 | v = SCM_CDR (v); | |
1367 | e = SCM_CDR (e); | |
1368 | s = SCM_CDR (s); | |
1369 | } | |
ff467021 | 1370 | while (SCM_NIMP (v)); |
a23afe53 MD |
1371 | z = scm_cons (z, SCM_UNSPECIFIED); |
1372 | SCM_SETCDR (ls, z); | |
cf498326 | 1373 | if (SCM_EQ_P (SCM_CAR (ls), scm_sym_do)) |
6dbd0af5 MD |
1374 | { |
1375 | x = SCM_CDR (x); | |
26d5b9b4 | 1376 | /* test clause */ |
a23afe53 | 1377 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1378 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1379 | z = SCM_CDR (z); |
1380 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
26d5b9b4 MD |
1381 | /* body forms are now to be found in SCM_CDR (x) |
1382 | (this is how *real* code look like! :) */ | |
6dbd0af5 MD |
1383 | } |
1384 | break; | |
1385 | } | |
c209c88e | 1386 | case SCM_BIT8(SCM_IM_LETSTAR): |
6dbd0af5 MD |
1387 | { |
1388 | SCM b, y; | |
1389 | x = SCM_CDR (x); | |
1390 | b = SCM_CAR (x); | |
1391 | y = SCM_EOL; | |
1392 | if SCM_IMP (b) | |
1393 | { | |
e2806c10 | 1394 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1395 | goto letstar; |
1396 | } | |
1397 | y = z = scm_acons (SCM_CAR (b), | |
1398 | unmemocar ( | |
1399 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1400 | SCM_UNSPECIFIED); | |
e2806c10 | 1401 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1402 | b = SCM_CDR (SCM_CDR (b)); |
1403 | if (SCM_IMP (b)) | |
1404 | { | |
1405 | SCM_SETCDR (y, SCM_EOL); | |
2f0d1375 | 1406 | ls = scm_cons (scm_sym_let, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1407 | break; |
1408 | } | |
1409 | do | |
1410 | { | |
a23afe53 MD |
1411 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1412 | unmemocar ( | |
6dbd0af5 | 1413 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1414 | SCM_UNSPECIFIED)); |
1415 | z = SCM_CDR (z); | |
e2806c10 | 1416 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1417 | b = SCM_CDR (SCM_CDR (b)); |
1418 | } | |
ff467021 | 1419 | while (SCM_NIMP (b)); |
a23afe53 | 1420 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 | 1421 | letstar: |
2f0d1375 | 1422 | ls = scm_cons (scm_sym_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1423 | break; |
1424 | } | |
c209c88e | 1425 | case SCM_BIT8(SCM_IM_OR): |
2f0d1375 | 1426 | ls = z = scm_cons (scm_sym_or, SCM_UNSPECIFIED); |
6dbd0af5 | 1427 | break; |
c209c88e | 1428 | case SCM_BIT8(SCM_IM_LAMBDA): |
6dbd0af5 | 1429 | x = SCM_CDR (x); |
2f0d1375 | 1430 | ls = scm_cons (scm_sym_lambda, |
6dbd0af5 | 1431 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); |
e2806c10 | 1432 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 | 1433 | break; |
c209c88e | 1434 | case SCM_BIT8(SCM_IM_QUOTE): |
2f0d1375 | 1435 | ls = z = scm_cons (scm_sym_quote, SCM_UNSPECIFIED); |
6dbd0af5 | 1436 | break; |
c209c88e | 1437 | case SCM_BIT8(SCM_IM_SET_X): |
89efbff4 | 1438 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); |
6dbd0af5 | 1439 | break; |
c209c88e | 1440 | case SCM_BIT8(SCM_IM_DEFINE): |
6dbd0af5 MD |
1441 | { |
1442 | SCM n; | |
1443 | x = SCM_CDR (x); | |
2f0d1375 | 1444 | ls = scm_cons (scm_sym_define, |
6dbd0af5 MD |
1445 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); |
1446 | if (SCM_NNULLP (env)) | |
a23afe53 | 1447 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1448 | break; |
1449 | } | |
c209c88e | 1450 | case SCM_BIT8(SCM_MAKISYM (0)): |
6dbd0af5 MD |
1451 | z = SCM_CAR (x); |
1452 | if (!SCM_ISYMP (z)) | |
1453 | goto unmemo; | |
ff467021 | 1454 | switch (SCM_ISYMNUM (z)) |
6dbd0af5 MD |
1455 | { |
1456 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2f0d1375 | 1457 | ls = z = scm_cons (scm_sym_atapply, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1458 | goto loop; |
1459 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2f0d1375 | 1460 | ls = z = scm_cons (scm_sym_atcall_cc, SCM_UNSPECIFIED); |
6dbd0af5 | 1461 | goto loop; |
a570e93a MD |
1462 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
1463 | ls = z = scm_cons (scm_sym_delay, SCM_UNSPECIFIED); | |
1464 | x = SCM_CDR (x); | |
1465 | goto loop; | |
6dbd0af5 | 1466 | default: |
fa888178 | 1467 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1468 | } |
1469 | unmemo: | |
1470 | default: | |
1471 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1472 | SCM_UNSPECIFIED), | |
1473 | env); | |
1474 | } | |
1475 | loop: | |
1476 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 | 1477 | { |
26d5b9b4 MD |
1478 | if (SCM_IMP (SCM_CAR (x)) && SCM_ISYMP (SCM_CAR (x))) |
1479 | /* skip body markers */ | |
1480 | continue; | |
a23afe53 MD |
1481 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), |
1482 | SCM_UNSPECIFIED), | |
1483 | env)); | |
1484 | z = SCM_CDR (z); | |
1485 | } | |
1486 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1487 | #ifdef DEBUG_EXTENSIONS |
1488 | if (SCM_NFALSEP (p)) | |
1489 | scm_whash_insert (scm_source_whash, ls, p); | |
1490 | #endif | |
1491 | return ls; | |
1492 | } | |
1493 | ||
1cc91f1b | 1494 | |
6dbd0af5 | 1495 | SCM |
6e8d25a6 | 1496 | scm_unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1497 | { |
1498 | if (SCM_NNULLP (env)) | |
1499 | /* Make a copy of the lowest frame to protect it from | |
1500 | modifications by SCM_IM_DEFINE */ | |
1501 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1502 | else | |
1503 | return unmemocopy (x, env); | |
1504 | } | |
1505 | ||
cf7c17e9 | 1506 | #ifndef SCM_RECKLESS |
1cc91f1b | 1507 | |
0f2d19dd | 1508 | int |
6e8d25a6 | 1509 | scm_badargsp (SCM formals, SCM args) |
0f2d19dd | 1510 | { |
ff467021 | 1511 | while (SCM_NIMP (formals)) |
0f2d19dd | 1512 | { |
ff467021 JB |
1513 | if (SCM_NCONSP (formals)) |
1514 | return 0; | |
1515 | if (SCM_IMP(args)) | |
1516 | return 1; | |
0f2d19dd JB |
1517 | formals = SCM_CDR (formals); |
1518 | args = SCM_CDR (args); | |
1519 | } | |
1520 | return SCM_NNULLP (args) ? 1 : 0; | |
1521 | } | |
1522 | #endif | |
1523 | ||
1524 | ||
1525 | \f | |
6dbd0af5 | 1526 | SCM |
6e8d25a6 | 1527 | scm_eval_args (SCM l, SCM env, SCM proc) |
6dbd0af5 | 1528 | { |
680ed4a8 | 1529 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1530 | while (SCM_NIMP (l)) |
1531 | { | |
cf7c17e9 | 1532 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1533 | if (SCM_IMP (l)) |
1534 | goto wrongnumargs; | |
1535 | else if (SCM_CONSP (l)) | |
1536 | { | |
1537 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1538 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1539 | else |
1540 | res = EVALCELLCAR (l, env); | |
1541 | } | |
3201d763 | 1542 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1543 | { |
3201d763 DH |
1544 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1545 | if (vcell == 0) | |
680ed4a8 | 1546 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1547 | else |
1548 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1549 | } |
1550 | else | |
1551 | goto wrongnumargs; | |
1552 | #else | |
1553 | res = EVALCAR (l, env); | |
1554 | #endif | |
1555 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1556 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1557 | l = SCM_CDR (l); |
1558 | } | |
cf7c17e9 | 1559 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1560 | if (SCM_NNULLP (l)) |
1561 | { | |
1562 | wrongnumargs: | |
1563 | scm_wrong_num_args (proc); | |
1564 | } | |
1565 | #endif | |
1566 | return results; | |
6dbd0af5 | 1567 | } |
c4ac4d88 | 1568 | |
9de33deb MD |
1569 | SCM |
1570 | scm_eval_body (SCM code, SCM env) | |
1571 | { | |
1572 | SCM next; | |
1573 | again: | |
1574 | next = code; | |
1575 | while (SCM_NNULLP (next = SCM_CDR (next))) | |
1576 | { | |
1577 | if (SCM_IMP (SCM_CAR (code))) | |
1578 | { | |
1579 | if (SCM_ISYMP (SCM_CAR (code))) | |
1580 | { | |
1581 | code = scm_m_expand_body (code, env); | |
1582 | goto again; | |
1583 | } | |
1584 | } | |
1585 | else | |
1586 | SCM_XEVAL (SCM_CAR (code), env); | |
1587 | code = next; | |
1588 | } | |
1589 | return SCM_XEVALCAR (code, env); | |
1590 | } | |
1591 | ||
c4ac4d88 | 1592 | |
0f2d19dd JB |
1593 | #endif /* !DEVAL */ |
1594 | ||
6dbd0af5 MD |
1595 | |
1596 | /* SECTION: This code is specific for the debugging support. One | |
1597 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1598 | * defined. | |
1599 | */ | |
1600 | ||
1601 | #ifndef DEVAL | |
1602 | ||
1603 | #define SCM_APPLY scm_apply | |
1604 | #define PREP_APPLY(proc, args) | |
1605 | #define ENTER_APPLY | |
1606 | #define RETURN(x) return x; | |
b7ff98dd MD |
1607 | #ifdef STACK_CHECKING |
1608 | #ifndef NO_CEVAL_STACK_CHECKING | |
1609 | #define EVAL_STACK_CHECKING | |
1610 | #endif | |
6dbd0af5 MD |
1611 | #endif |
1612 | ||
1613 | #else /* !DEVAL */ | |
1614 | ||
0f2d19dd JB |
1615 | #undef SCM_CEVAL |
1616 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1617 | #undef SCM_APPLY | |
1618 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1619 | #undef PREP_APPLY |
1620 | #define PREP_APPLY(p, l) \ | |
1621 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1622 | #undef ENTER_APPLY | |
1623 | #define ENTER_APPLY \ | |
d3a6bc94 | 1624 | do { \ |
b7ff98dd | 1625 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1626 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1627 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1628 | {\ |
156dcb09 | 1629 | SCM tmp, tail = SCM_BOOL(SCM_TRACED_FRAME_P (debug)); \ |
c6a4fbce | 1630 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1631 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1632 | {\ |
c0ab1b8d | 1633 | tmp = scm_make_debugobj (&debug);\ |
2f0d1375 | 1634 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1635 | }\ |
6dbd0af5 MD |
1636 | else\ |
1637 | {\ | |
1638 | scm_make_cont (&tmp);\ | |
ca6ef71a | 1639 | if (!setjmp (SCM_JMPBUF (tmp)))\ |
2f0d1375 | 1640 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
6dbd0af5 MD |
1641 | }\ |
1642 | }\ | |
d3a6bc94 | 1643 | } while (0) |
0f2d19dd JB |
1644 | #undef RETURN |
1645 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1646 | #ifdef STACK_CHECKING |
1647 | #ifndef EVAL_STACK_CHECKING | |
1648 | #define EVAL_STACK_CHECKING | |
1649 | #endif | |
6dbd0af5 MD |
1650 | #endif |
1651 | ||
1652 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1653 | * *fixme*: Although efficiency is important here, this state variable | |
1654 | * should probably not be a global. It should be related to the | |
1655 | * current repl. | |
1656 | */ | |
1657 | ||
1cc91f1b | 1658 | |
1bbd0b84 | 1659 | SCM (*scm_ceval_ptr) (SCM x, SCM env); |
0f2d19dd | 1660 | |
1646d37b | 1661 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1662 | * information stack frame. It is accessed very often from the |
1663 | * debugging evaluator, so it should probably not be indirectly | |
1664 | * addressed. Better to save and restore it from the current root at | |
1665 | * any stack swaps. | |
1666 | */ | |
1667 | ||
1646d37b MD |
1668 | #ifndef USE_THREADS |
1669 | scm_debug_frame *scm_last_debug_frame; | |
1670 | #endif | |
6dbd0af5 MD |
1671 | |
1672 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1673 | * stack frames at each real stack frame. | |
1674 | */ | |
1675 | ||
1676 | int scm_debug_eframe_size; | |
1677 | ||
b7ff98dd | 1678 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1679 | |
a74145b8 MD |
1680 | int scm_eval_stack; |
1681 | ||
33b97402 | 1682 | scm_option scm_eval_opts[] = { |
a74145b8 | 1683 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1684 | }; |
1685 | ||
6dbd0af5 | 1686 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1687 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1688 | "*Flyweight representation of the stack at traps." }, | |
1689 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1690 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1691 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1692 | "Record procedure names at definition." }, | |
1693 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1694 | "Display backtrace in anti-chronological order." }, | |
274dc5fd | 1695 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, |
4e646a03 MD |
1696 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1697 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1698 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1699 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1700 | "Maximal number of stored backtrace frames." }, | |
1701 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1702 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1703 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1704 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1705 | }; |
1706 | ||
1707 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1708 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1709 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1710 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1711 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1712 | }; |
1713 | ||
a1ec6916 | 1714 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
1bbd0b84 | 1715 | (SCM setting), |
b380b885 | 1716 | "") |
1bbd0b84 | 1717 | #define FUNC_NAME s_scm_eval_options_interface |
33b97402 MD |
1718 | { |
1719 | SCM ans; | |
1720 | SCM_DEFER_INTS; | |
1721 | ans = scm_options (setting, | |
1722 | scm_eval_opts, | |
1723 | SCM_N_EVAL_OPTIONS, | |
1bbd0b84 | 1724 | FUNC_NAME); |
a74145b8 | 1725 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1726 | SCM_ALLOW_INTS; |
1727 | return ans; | |
1728 | } | |
1bbd0b84 | 1729 | #undef FUNC_NAME |
33b97402 | 1730 | |
a1ec6916 | 1731 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
1bbd0b84 | 1732 | (SCM setting), |
b380b885 | 1733 | "") |
1bbd0b84 | 1734 | #define FUNC_NAME s_scm_evaluator_traps |
33b97402 MD |
1735 | { |
1736 | SCM ans; | |
1737 | SCM_DEFER_INTS; | |
1738 | ans = scm_options (setting, | |
1739 | scm_evaluator_trap_table, | |
1740 | SCM_N_EVALUATOR_TRAPS, | |
1bbd0b84 | 1741 | FUNC_NAME); |
33b97402 | 1742 | SCM_RESET_DEBUG_MODE; |
bfc69694 | 1743 | SCM_ALLOW_INTS; |
33b97402 MD |
1744 | return ans; |
1745 | } | |
1bbd0b84 | 1746 | #undef FUNC_NAME |
33b97402 | 1747 | |
6dbd0af5 | 1748 | SCM |
6e8d25a6 | 1749 | scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc) |
0f2d19dd | 1750 | { |
680ed4a8 | 1751 | SCM *results = lloc, res; |
0f2d19dd JB |
1752 | while (SCM_NIMP (l)) |
1753 | { | |
cf7c17e9 | 1754 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1755 | if (SCM_IMP (l)) |
1756 | goto wrongnumargs; | |
1757 | else if (SCM_CONSP (l)) | |
1758 | { | |
1759 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1760 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1761 | else |
1762 | res = EVALCELLCAR (l, env); | |
1763 | } | |
3201d763 | 1764 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1765 | { |
3201d763 DH |
1766 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1767 | if (vcell == 0) | |
680ed4a8 | 1768 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1769 | else |
1770 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1771 | } |
1772 | else | |
1773 | goto wrongnumargs; | |
1774 | #else | |
1775 | res = EVALCAR (l, env); | |
1776 | #endif | |
1777 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1778 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1779 | l = SCM_CDR (l); |
1780 | } | |
cf7c17e9 | 1781 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1782 | if (SCM_NNULLP (l)) |
1783 | { | |
1784 | wrongnumargs: | |
1785 | scm_wrong_num_args (proc); | |
1786 | } | |
1787 | #endif | |
1788 | return *results; | |
0f2d19dd JB |
1789 | } |
1790 | ||
6dbd0af5 MD |
1791 | #endif /* !DEVAL */ |
1792 | ||
1793 | ||
1794 | /* SECTION: Some local definitions for the evaluator. | |
1795 | */ | |
1796 | ||
1797 | #ifndef DEVAL | |
3201d763 | 1798 | #define CHECK_EQVISH(A,B) (SCM_EQ_P ((A), (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) |
6dbd0af5 MD |
1799 | #endif /* DEVAL */ |
1800 | ||
399dedcc | 1801 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1802 | |
1803 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1804 | * three heads. This code is compiled twice. | |
1805 | */ | |
1806 | ||
0f2d19dd | 1807 | #if 0 |
1cc91f1b | 1808 | |
0f2d19dd | 1809 | SCM |
1bbd0b84 | 1810 | scm_ceval (SCM x, SCM env) |
0f2d19dd JB |
1811 | {} |
1812 | #endif | |
1813 | #if 0 | |
1cc91f1b | 1814 | |
0f2d19dd | 1815 | SCM |
1bbd0b84 | 1816 | scm_deval (SCM x, SCM env) |
0f2d19dd JB |
1817 | {} |
1818 | #endif | |
1819 | ||
6dbd0af5 | 1820 | SCM |
1bbd0b84 | 1821 | SCM_CEVAL (SCM x, SCM env) |
0f2d19dd JB |
1822 | { |
1823 | union | |
1824 | { | |
1825 | SCM *lloc; | |
1826 | SCM arg1; | |
f8769b1d | 1827 | } t; |
6dbd0af5 MD |
1828 | SCM proc, arg2; |
1829 | #ifdef DEVAL | |
c0ab1b8d JB |
1830 | scm_debug_frame debug; |
1831 | scm_debug_info *debug_info_end; | |
1646d37b | 1832 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1833 | debug.status = scm_debug_eframe_size; |
04b6c081 MD |
1834 | /* |
1835 | * The debug.vect contains twice as much scm_debug_info frames as the | |
1836 | * user has specified with (debug-set! frames <n>). | |
1837 | * | |
1838 | * Even frames are eval frames, odd frames are apply frames. | |
1839 | */ | |
c0ab1b8d JB |
1840 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1841 | * sizeof (debug.vect[0])); | |
1842 | debug.info = debug.vect; | |
1843 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1844 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1845 | #endif |
b7ff98dd | 1846 | #ifdef EVAL_STACK_CHECKING |
6f13f9cb MD |
1847 | if (scm_stack_checking_enabled_p |
1848 | && SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc)) | |
6dbd0af5 | 1849 | { |
b7ff98dd | 1850 | #ifdef DEVAL |
6dbd0af5 MD |
1851 | debug.info->e.exp = x; |
1852 | debug.info->e.env = env; | |
b7ff98dd | 1853 | #endif |
6dbd0af5 MD |
1854 | scm_report_stack_overflow (); |
1855 | } | |
1856 | #endif | |
1857 | #ifdef DEVAL | |
1858 | goto start; | |
1859 | #endif | |
1860 | loopnoap: | |
1861 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1862 | loop: | |
1863 | #ifdef DEVAL | |
b7ff98dd MD |
1864 | SCM_CLEAR_ARGSREADY (debug); |
1865 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1866 | --debug.info; |
04b6c081 MD |
1867 | /* |
1868 | * In theory, this should be the only place where it is necessary to | |
1869 | * check for space in debug.vect since both eval frames and | |
1870 | * available space are even. | |
1871 | * | |
1872 | * For this to be the case, however, it is necessary that primitive | |
1873 | * special forms which jump back to `loop', `begin' or some similar | |
1874 | * label call PREP_APPLY. A convenient way to do this is to jump to | |
1875 | * `loopnoap' or `cdrxnoap'. | |
1876 | */ | |
c0ab1b8d | 1877 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1878 | { |
b7ff98dd | 1879 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1880 | debug.info -= 2; |
1881 | } | |
1882 | start: | |
1883 | debug.info->e.exp = x; | |
1884 | debug.info->e.env = env; | |
b6d75948 | 1885 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1886 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1887 | { |
156dcb09 | 1888 | SCM tail = SCM_BOOL(SCM_TAILRECP (debug)); |
b7ff98dd | 1889 | SCM_SET_TAILREC (debug); |
b7ff98dd | 1890 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1891 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1892 | else |
1893 | { | |
1894 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1895 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1896 | { |
1897 | x = SCM_THROW_VALUE (t.arg1); | |
1898 | if (SCM_IMP (x)) | |
1899 | { | |
1900 | RETURN (x); | |
1901 | } | |
1902 | else | |
1903 | /* This gives the possibility for the debugger to | |
1904 | modify the source expression before evaluation. */ | |
1905 | goto dispatch; | |
1906 | } | |
1907 | } | |
2f0d1375 | 1908 | scm_ithrow (scm_sym_enter_frame, |
6dbd0af5 MD |
1909 | scm_cons2 (t.arg1, tail, |
1910 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1911 | 0); | |
1912 | } | |
6dbd0af5 | 1913 | #endif |
e3173f93 | 1914 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1915 | dispatch: |
e3173f93 | 1916 | #endif |
9cb5124f | 1917 | SCM_TICK; |
0f2d19dd JB |
1918 | switch (SCM_TYP7 (x)) |
1919 | { | |
1920 | case scm_tcs_symbols: | |
1921 | /* Only happens when called at top level. | |
1922 | */ | |
1923 | x = scm_cons (x, SCM_UNDEFINED); | |
1924 | goto retval; | |
1925 | ||
c209c88e | 1926 | case SCM_BIT8(SCM_IM_AND): |
0f2d19dd JB |
1927 | x = SCM_CDR (x); |
1928 | t.arg1 = x; | |
1929 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1930 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1931 | { | |
1932 | RETURN (SCM_BOOL_F); | |
1933 | } | |
1934 | else | |
1935 | x = t.arg1; | |
6dbd0af5 | 1936 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1937 | goto carloop; |
1938 | ||
c209c88e | 1939 | case SCM_BIT8(SCM_IM_BEGIN): |
6dbd0af5 MD |
1940 | cdrxnoap: |
1941 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1942 | cdrxbegin: |
1943 | x = SCM_CDR (x); | |
1944 | ||
1945 | begin: | |
1946 | t.arg1 = x; | |
1947 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1948 | { | |
26d5b9b4 MD |
1949 | if (SCM_IMP (SCM_CAR (x))) |
1950 | { | |
1951 | if (SCM_ISYMP (SCM_CAR (x))) | |
1952 | { | |
1953 | x = scm_m_expand_body (x, env); | |
1954 | goto begin; | |
1955 | } | |
1956 | } | |
1957 | else | |
1958 | SCM_CEVAL (SCM_CAR (x), env); | |
0f2d19dd JB |
1959 | x = t.arg1; |
1960 | } | |
1961 | ||
1962 | carloop: /* scm_eval car of last form in list */ | |
1963 | if (SCM_NCELLP (SCM_CAR (x))) | |
1964 | { | |
1965 | x = SCM_CAR (x); | |
6cb702da | 1966 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1967 | } |
1968 | ||
1969 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1970 | { | |
1971 | retval: | |
26d5b9b4 | 1972 | RETURN (*scm_lookupcar (x, env, 1)) |
0f2d19dd JB |
1973 | } |
1974 | ||
1975 | x = SCM_CAR (x); | |
1976 | goto loop; /* tail recurse */ | |
1977 | ||
1978 | ||
c209c88e | 1979 | case SCM_BIT8(SCM_IM_CASE): |
0f2d19dd JB |
1980 | x = SCM_CDR (x); |
1981 | t.arg1 = EVALCAR (x, env); | |
1982 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1983 | { | |
1984 | proc = SCM_CAR (x); | |
cf498326 | 1985 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (proc))) |
0f2d19dd JB |
1986 | { |
1987 | x = SCM_CDR (proc); | |
6dbd0af5 | 1988 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1989 | goto begin; |
1990 | } | |
1991 | proc = SCM_CAR (proc); | |
1992 | while (SCM_NIMP (proc)) | |
1993 | { | |
1994 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1995 | { | |
1996 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1997 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1998 | goto begin; |
1999 | } | |
2000 | proc = SCM_CDR (proc); | |
2001 | } | |
2002 | } | |
6dbd0af5 | 2003 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2004 | |
2005 | ||
c209c88e | 2006 | case SCM_BIT8(SCM_IM_COND): |
0f2d19dd JB |
2007 | while (SCM_NIMP (x = SCM_CDR (x))) |
2008 | { | |
2009 | proc = SCM_CAR (x); | |
2010 | t.arg1 = EVALCAR (proc, env); | |
2011 | if (SCM_NFALSEP (t.arg1)) | |
2012 | { | |
2013 | x = SCM_CDR (proc); | |
6dbd0af5 | 2014 | if SCM_NULLP (x) |
0f2d19dd | 2015 | { |
6dbd0af5 | 2016 | RETURN (t.arg1) |
0f2d19dd | 2017 | } |
cf498326 | 2018 | if (! SCM_EQ_P (scm_sym_arrow, SCM_CAR (x))) |
6dbd0af5 MD |
2019 | { |
2020 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2021 | goto begin; | |
2022 | } | |
0f2d19dd JB |
2023 | proc = SCM_CDR (x); |
2024 | proc = EVALCAR (proc, env); | |
2025 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2026 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2027 | ENTER_APPLY; | |
0f2d19dd JB |
2028 | goto evap1; |
2029 | } | |
2030 | } | |
6dbd0af5 | 2031 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2032 | |
2033 | ||
c209c88e | 2034 | case SCM_BIT8(SCM_IM_DO): |
0f2d19dd JB |
2035 | x = SCM_CDR (x); |
2036 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
2037 | t.arg1 = SCM_EOL; /* values */ | |
2038 | while (SCM_NIMP (proc)) | |
2039 | { | |
2040 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2041 | proc = SCM_CDR (proc); | |
2042 | } | |
e2806c10 | 2043 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
2044 | x = SCM_CDR (SCM_CDR (x)); |
2045 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
2046 | { | |
f3d2630a | 2047 | for (proc = SCM_CADR (x); SCM_NIMP (proc); proc = SCM_CDR (proc)) |
0f2d19dd JB |
2048 | { |
2049 | t.arg1 = SCM_CAR (proc); /* body */ | |
2050 | SIDEVAL (t.arg1, env); | |
2051 | } | |
f3d2630a MD |
2052 | for (t.arg1 = SCM_EOL, proc = SCM_CDDR (x); |
2053 | SCM_NIMP (proc); | |
2054 | proc = SCM_CDR (proc)) | |
0f2d19dd | 2055 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ |
e2806c10 | 2056 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
2057 | } |
2058 | x = SCM_CDR (proc); | |
2059 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
2060 | RETURN (SCM_UNSPECIFIED); |
2061 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
2062 | goto begin; |
2063 | ||
2064 | ||
c209c88e | 2065 | case SCM_BIT8(SCM_IM_IF): |
0f2d19dd JB |
2066 | x = SCM_CDR (x); |
2067 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
2068 | x = SCM_CDR (x); | |
2069 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
2070 | { | |
2071 | RETURN (SCM_UNSPECIFIED); | |
2072 | } | |
6dbd0af5 | 2073 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2074 | goto carloop; |
2075 | ||
2076 | ||
c209c88e | 2077 | case SCM_BIT8(SCM_IM_LET): |
0f2d19dd JB |
2078 | x = SCM_CDR (x); |
2079 | proc = SCM_CAR (SCM_CDR (x)); | |
2080 | t.arg1 = SCM_EOL; | |
2081 | do | |
2082 | { | |
2083 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2084 | } | |
2085 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 2086 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 2087 | x = SCM_CDR (x); |
6dbd0af5 | 2088 | goto cdrxnoap; |
0f2d19dd JB |
2089 | |
2090 | ||
c209c88e | 2091 | case SCM_BIT8(SCM_IM_LETREC): |
0f2d19dd | 2092 | x = SCM_CDR (x); |
e2806c10 | 2093 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
2094 | x = SCM_CDR (x); |
2095 | proc = SCM_CAR (x); | |
2096 | t.arg1 = SCM_EOL; | |
2097 | do | |
2098 | { | |
2099 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2100 | } | |
2101 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 2102 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 2103 | goto cdrxnoap; |
0f2d19dd JB |
2104 | |
2105 | ||
c209c88e | 2106 | case SCM_BIT8(SCM_IM_LETSTAR): |
0f2d19dd JB |
2107 | x = SCM_CDR (x); |
2108 | proc = SCM_CAR (x); | |
2109 | if (SCM_IMP (proc)) | |
2110 | { | |
e2806c10 | 2111 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 2112 | goto cdrxnoap; |
0f2d19dd JB |
2113 | } |
2114 | do | |
2115 | { | |
2116 | t.arg1 = SCM_CAR (proc); | |
2117 | proc = SCM_CDR (proc); | |
e2806c10 | 2118 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
2119 | } |
2120 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 2121 | goto cdrxnoap; |
0f2d19dd | 2122 | |
c209c88e | 2123 | case SCM_BIT8(SCM_IM_OR): |
0f2d19dd JB |
2124 | x = SCM_CDR (x); |
2125 | t.arg1 = x; | |
2126 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
2127 | { | |
2128 | x = EVALCAR (x, env); | |
2129 | if (SCM_NFALSEP (x)) | |
2130 | { | |
2131 | RETURN (x); | |
2132 | } | |
2133 | x = t.arg1; | |
2134 | } | |
6dbd0af5 | 2135 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2136 | goto carloop; |
2137 | ||
2138 | ||
c209c88e | 2139 | case SCM_BIT8(SCM_IM_LAMBDA): |
0f2d19dd JB |
2140 | RETURN (scm_closure (SCM_CDR (x), env)); |
2141 | ||
2142 | ||
c209c88e | 2143 | case SCM_BIT8(SCM_IM_QUOTE): |
0f2d19dd JB |
2144 | RETURN (SCM_CAR (SCM_CDR (x))); |
2145 | ||
2146 | ||
c209c88e | 2147 | case SCM_BIT8(SCM_IM_SET_X): |
0f2d19dd JB |
2148 | x = SCM_CDR (x); |
2149 | proc = SCM_CAR (x); | |
3201d763 | 2150 | switch (SCM_ITAG3 (proc)) |
0f2d19dd | 2151 | { |
3201d763 | 2152 | case scm_tc3_cons: |
26d5b9b4 | 2153 | t.lloc = scm_lookupcar (x, env, 1); |
0f2d19dd | 2154 | break; |
3201d763 | 2155 | case scm_tc3_cons_gloc: |
a23afe53 | 2156 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
2157 | break; |
2158 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 2159 | case scm_tc3_imm24: |
0f2d19dd JB |
2160 | t.lloc = scm_ilookup (proc, env); |
2161 | break; | |
2162 | #endif | |
2163 | } | |
2164 | x = SCM_CDR (x); | |
2165 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
2166 | #ifdef SICP |
2167 | RETURN (*t.lloc); | |
2168 | #else | |
2169 | RETURN (SCM_UNSPECIFIED); | |
2170 | #endif | |
2171 | ||
2172 | ||
c209c88e | 2173 | case SCM_BIT8(SCM_IM_DEFINE): /* only for internal defines */ |
26d5b9b4 MD |
2174 | scm_misc_error (NULL, "Bad define placement", SCM_EOL); |
2175 | ||
0f2d19dd | 2176 | /* new syntactic forms go here. */ |
c209c88e | 2177 | case SCM_BIT8(SCM_MAKISYM (0)): |
0f2d19dd JB |
2178 | proc = SCM_CAR (x); |
2179 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
2180 | switch SCM_ISYMNUM (proc) | |
2181 | { | |
2182 | #if 0 | |
2183 | case (SCM_ISYMNUM (IM_VREF)): | |
2184 | { | |
2185 | SCM var; | |
2186 | var = SCM_CAR (SCM_CDR (x)); | |
2187 | RETURN (SCM_CDR(var)); | |
2188 | } | |
2189 | case (SCM_ISYMNUM (IM_VSET)): | |
2190 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
2191 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 2192 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2193 | #endif |
2194 | ||
2195 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2196 | proc = SCM_CDR (x); | |
2197 | proc = EVALCAR (proc, env); | |
2198 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
2199 | if (SCM_CLOSUREP (proc)) | |
2200 | { | |
1609038c | 2201 | SCM argl, tl; |
6dbd0af5 | 2202 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
2203 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
2204 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
2205 | #ifdef DEVAL |
2206 | debug.info->a.args = t.arg1; | |
2207 | #endif | |
cf7c17e9 | 2208 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
2209 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
2210 | goto wrongnumargs; | |
2211 | #endif | |
c79450dd | 2212 | ENTER_APPLY; |
1609038c MD |
2213 | /* Copy argument list */ |
2214 | if (SCM_IMP (t.arg1)) | |
2215 | argl = t.arg1; | |
2216 | else | |
2217 | { | |
2218 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
2219 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
2220 | && SCM_CONSP (t.arg1)) | |
2221 | { | |
2222 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
2223 | SCM_UNSPECIFIED)); | |
2224 | tl = SCM_CDR (tl); | |
2225 | } | |
2226 | SCM_SETCDR (tl, t.arg1); | |
2227 | } | |
2228 | ||
2229 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
2230 | x = SCM_CODE (proc); |
2231 | goto cdrxbegin; | |
2232 | } | |
81123e6d | 2233 | proc = scm_f_apply; |
0f2d19dd JB |
2234 | goto evapply; |
2235 | ||
2236 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2237 | scm_make_cont (&t.arg1); | |
ca6ef71a | 2238 | if (setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
2239 | { |
2240 | SCM val; | |
2241 | val = SCM_THROW_VALUE (t.arg1); | |
a570e93a | 2242 | RETURN (val) |
0f2d19dd JB |
2243 | } |
2244 | proc = SCM_CDR (x); | |
2245 | proc = evalcar (proc, env); | |
2246 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2247 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2248 | ENTER_APPLY; | |
0f2d19dd JB |
2249 | goto evap1; |
2250 | ||
a570e93a MD |
2251 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
2252 | RETURN (scm_makprom (scm_closure (SCM_CDR (x), env))) | |
2253 | ||
89efbff4 | 2254 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
195847fa MD |
2255 | proc = SCM_CADR (x); /* unevaluated operands */ |
2256 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2257 | if (SCM_IMP (proc)) | |
2258 | arg2 = *scm_ilookup (proc, env); | |
2259 | else if (SCM_NCONSP (proc)) | |
2260 | { | |
2261 | if (SCM_NCELLP (proc)) | |
2262 | arg2 = SCM_GLOC_VAL (proc); | |
2263 | else | |
2264 | arg2 = *scm_lookupcar (SCM_CDR (x), env, 1); | |
2265 | } | |
2266 | else | |
2267 | { | |
2268 | arg2 = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2269 | t.lloc = SCM_CDRLOC (arg2); | |
2270 | while (SCM_NIMP (proc = SCM_CDR (proc))) | |
2271 | { | |
2272 | *t.lloc = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2273 | t.lloc = SCM_CDRLOC (*t.lloc); | |
2274 | } | |
2275 | } | |
2276 | ||
2277 | type_dispatch: | |
61364ba6 MD |
2278 | /* The type dispatch code is duplicated here |
2279 | * (c.f. objects.c:scm_mcache_compute_cmethod) since that | |
2280 | * cuts down execution time for type dispatch to 50%. | |
2281 | */ | |
2282 | { | |
2283 | int i, n, end, mask; | |
2284 | SCM z = SCM_CDDR (x); | |
2285 | n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */ | |
2286 | proc = SCM_CADR (z); | |
2287 | ||
2288 | if (SCM_NIMP (proc)) | |
2289 | { | |
2290 | /* Prepare for linear search */ | |
2291 | mask = -1; | |
2292 | i = 0; | |
2293 | end = SCM_LENGTH (proc); | |
2294 | } | |
2295 | else | |
2296 | { | |
2297 | /* Compute a hash value */ | |
2298 | int hashset = SCM_INUM (proc); | |
2299 | int j = n; | |
2300 | mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z))); | |
2301 | proc = SCM_CADR (z); | |
2302 | i = 0; | |
2303 | t.arg1 = arg2; | |
2304 | if (SCM_NIMP (t.arg1)) | |
2305 | do | |
2306 | { | |
d8c40b9f DH |
2307 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1))) |
2308 | [scm_si_hashsets + hashset]; | |
61364ba6 MD |
2309 | t.arg1 = SCM_CDR (t.arg1); |
2310 | } | |
2311 | while (--j && SCM_NIMP (t.arg1)); | |
2312 | i &= mask; | |
2313 | end = i; | |
2314 | } | |
2315 | ||
2316 | /* Search for match */ | |
2317 | do | |
2318 | { | |
2319 | int j = n; | |
2320 | z = SCM_VELTS (proc)[i]; | |
2321 | t.arg1 = arg2; /* list of arguments */ | |
2322 | if (SCM_NIMP (t.arg1)) | |
2323 | do | |
2324 | { | |
2325 | /* More arguments than specifiers => CLASS != ENV */ | |
cf498326 | 2326 | if (! SCM_EQ_P (scm_class_of (SCM_CAR (t.arg1)), SCM_CAR (z))) |
61364ba6 MD |
2327 | goto next_method; |
2328 | t.arg1 = SCM_CDR (t.arg1); | |
2329 | z = SCM_CDR (z); | |
2330 | } | |
2331 | while (--j && SCM_NIMP (t.arg1)); | |
2332 | /* Fewer arguments than specifiers => CAR != ENV */ | |
2333 | if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))) | |
2334 | goto next_method; | |
2335 | apply_cmethod: | |
2336 | env = EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (z)), | |
2337 | arg2, | |
2338 | SCM_CMETHOD_ENV (z)); | |
2339 | x = SCM_CMETHOD_CODE (z); | |
2340 | goto cdrxbegin; | |
2341 | next_method: | |
2342 | i = (i + 1) & mask; | |
2343 | } while (i != end); | |
2344 | ||
2345 | z = scm_memoize_method (x, arg2); | |
2346 | goto apply_cmethod; | |
2347 | } | |
73b64342 | 2348 | |
ca4be6ea MD |
2349 | case (SCM_ISYMNUM (SCM_IM_SLOT_REF)): |
2350 | x = SCM_CDR (x); | |
2351 | t.arg1 = EVALCAR (x, env); | |
d8c40b9f | 2352 | RETURN (SCM_PACK (SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CADR (x))])) |
ca4be6ea MD |
2353 | |
2354 | case (SCM_ISYMNUM (SCM_IM_SLOT_SET_X)): | |
2355 | x = SCM_CDR (x); | |
2356 | t.arg1 = EVALCAR (x, env); | |
2357 | x = SCM_CDR (x); | |
2358 | proc = SCM_CDR (x); | |
d8c40b9f DH |
2359 | SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CAR (x))] |
2360 | = SCM_UNPACK (EVALCAR (proc, env)); | |
5623a9b4 | 2361 | RETURN (SCM_UNSPECIFIED) |
ca4be6ea | 2362 | |
73b64342 MD |
2363 | case (SCM_ISYMNUM (SCM_IM_NIL_COND)): |
2364 | proc = SCM_CDR (x); | |
2365 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2366 | { | |
2367 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2368 | || SCM_EQ_P (t.arg1, scm_lisp_nil))) |
73b64342 | 2369 | { |
cf498326 | 2370 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2371 | RETURN (t.arg1); |
2372 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2373 | goto carloop; | |
2374 | } | |
2375 | proc = SCM_CDR (x); | |
2376 | } | |
2377 | x = proc; | |
2378 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2379 | goto carloop; | |
2380 | ||
2381 | case (SCM_ISYMNUM (SCM_IM_NIL_IFY)): | |
2382 | x = SCM_CDR (x); | |
2383 | RETURN ((SCM_FALSEP (proc = EVALCAR (x, env)) || SCM_NULLP (proc)) | |
43a912cf | 2384 | ? scm_lisp_nil |
73b64342 MD |
2385 | : proc) |
2386 | ||
2387 | case (SCM_ISYMNUM (SCM_IM_T_IFY)): | |
2388 | x = SCM_CDR (x); | |
43a912cf | 2389 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) ? scm_lisp_t : scm_lisp_nil) |
73b64342 MD |
2390 | |
2391 | case (SCM_ISYMNUM (SCM_IM_0_COND)): | |
2392 | proc = SCM_CDR (x); | |
2393 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2394 | { | |
2395 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2396 | || SCM_EQ_P (t.arg1, SCM_INUM0))) |
73b64342 | 2397 | { |
cf498326 | 2398 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2399 | RETURN (t.arg1); |
2400 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2401 | goto carloop; | |
2402 | } | |
2403 | proc = SCM_CDR (x); | |
2404 | } | |
2405 | x = proc; | |
2406 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2407 | goto carloop; | |
2408 | ||
2409 | case (SCM_ISYMNUM (SCM_IM_0_IFY)): | |
2410 | x = SCM_CDR (x); | |
2411 | RETURN (SCM_FALSEP (proc = EVALCAR (x, env)) | |
2412 | ? SCM_INUM0 | |
2413 | : proc) | |
2414 | ||
2415 | case (SCM_ISYMNUM (SCM_IM_1_IFY)): | |
2416 | x = SCM_CDR (x); | |
2417 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) | |
2418 | ? SCM_MAKINUM (1) | |
2419 | : SCM_INUM0) | |
2420 | ||
2421 | case (SCM_ISYMNUM (SCM_IM_BIND)): | |
2422 | x = SCM_CDR (x); | |
2423 | ||
2424 | t.arg1 = SCM_CAR (x); | |
2425 | arg2 = SCM_CDAR (env); | |
2426 | while (SCM_NIMP (arg2)) | |
2427 | { | |
2428 | proc = SCM_GLOC_VAL (SCM_CAR (t.arg1)); | |
a963f787 MD |
2429 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2430 | SCM_CAR (arg2)); | |
73b64342 MD |
2431 | SCM_SETCAR (arg2, proc); |
2432 | t.arg1 = SCM_CDR (t.arg1); | |
2433 | arg2 = SCM_CDR (arg2); | |
2434 | } | |
2435 | t.arg1 = SCM_CAR (x); | |
2436 | scm_dynwinds = scm_acons (t.arg1, SCM_CDAR (env), scm_dynwinds); | |
89efbff4 | 2437 | |
73b64342 MD |
2438 | arg2 = x = SCM_CDR (x); |
2439 | while (SCM_NNULLP (arg2 = SCM_CDR (arg2))) | |
2440 | { | |
2441 | SIDEVAL (SCM_CAR (x), env); | |
2442 | x = arg2; | |
2443 | } | |
2444 | proc = EVALCAR (x, env); | |
2445 | ||
2446 | scm_dynwinds = SCM_CDR (scm_dynwinds); | |
2447 | arg2 = SCM_CDAR (env); | |
2448 | while (SCM_NIMP (arg2)) | |
2449 | { | |
a963f787 MD |
2450 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2451 | SCM_CAR (arg2)); | |
73b64342 MD |
2452 | t.arg1 = SCM_CDR (t.arg1); |
2453 | arg2 = SCM_CDR (arg2); | |
2454 | } | |
2455 | ||
2456 | RETURN (proc) | |
2457 | ||
0f2d19dd JB |
2458 | default: |
2459 | goto badfun; | |
2460 | } | |
2461 | ||
2462 | default: | |
2463 | proc = x; | |
2464 | badfun: | |
f5bf2977 | 2465 | /* scm_everr (x, env,...) */ |
523f5266 | 2466 | scm_misc_error (NULL, |
70d63753 | 2467 | "Wrong type to apply: ~S", |
523f5266 | 2468 | scm_listify (proc, SCM_UNDEFINED)); |
0f2d19dd JB |
2469 | case scm_tc7_vector: |
2470 | case scm_tc7_wvect: | |
afe5177e | 2471 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
2472 | case scm_tc7_bvect: |
2473 | case scm_tc7_byvect: | |
2474 | case scm_tc7_svect: | |
2475 | case scm_tc7_ivect: | |
2476 | case scm_tc7_uvect: | |
2477 | case scm_tc7_fvect: | |
2478 | case scm_tc7_dvect: | |
2479 | case scm_tc7_cvect: | |
5c11cc9d | 2480 | #ifdef HAVE_LONG_LONGS |
0f2d19dd | 2481 | case scm_tc7_llvect: |
afe5177e | 2482 | #endif |
0f2d19dd JB |
2483 | #endif |
2484 | case scm_tc7_string: | |
0f2d19dd | 2485 | case scm_tc7_substring: |
0f2d19dd JB |
2486 | case scm_tc7_smob: |
2487 | case scm_tcs_closures: | |
224822be MD |
2488 | #ifdef CCLO |
2489 | case scm_tc7_cclo: | |
2490 | #endif | |
89efbff4 | 2491 | case scm_tc7_pws: |
0f2d19dd JB |
2492 | case scm_tcs_subrs: |
2493 | RETURN (x); | |
2494 | ||
2495 | #ifdef MEMOIZE_LOCALS | |
c209c88e | 2496 | case SCM_BIT8(SCM_ILOC00): |
0f2d19dd JB |
2497 | proc = *scm_ilookup (SCM_CAR (x), env); |
2498 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2499 | #ifndef SCM_RECKLESS |
2500 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2501 | goto checkargs; |
2502 | #endif | |
2503 | #endif | |
2504 | break; | |
2505 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2506 | ||
2507 | ||
3201d763 DH |
2508 | case scm_tcs_cons_gloc: { |
2509 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; | |
2510 | if (vcell == 0) { | |
aa00bd1e MD |
2511 | /* This is a struct implanted in the code, not a gloc. */ |
2512 | RETURN (x); | |
3201d763 DH |
2513 | } else { |
2514 | proc = SCM_PACK (vcell); | |
2515 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2516 | #ifndef SCM_RECKLESS |
2517 | #ifdef SCM_CAUTIOUS | |
3201d763 | 2518 | goto checkargs; |
0f2d19dd JB |
2519 | #endif |
2520 | #endif | |
3201d763 | 2521 | } |
0f2d19dd | 2522 | break; |
3201d763 | 2523 | } |
0f2d19dd JB |
2524 | |
2525 | case scm_tcs_cons_nimcar: | |
2526 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2527 | { | |
f8769b1d | 2528 | #ifdef USE_THREADS |
26d5b9b4 | 2529 | t.lloc = scm_lookupcar1 (x, env, 1); |
f8769b1d MV |
2530 | if (t.lloc == NULL) |
2531 | { | |
2532 | /* we have lost the race, start again. */ | |
2533 | goto dispatch; | |
2534 | } | |
2535 | proc = *t.lloc; | |
2536 | #else | |
26d5b9b4 | 2537 | proc = *scm_lookupcar (x, env, 1); |
f8769b1d MV |
2538 | #endif |
2539 | ||
0f2d19dd JB |
2540 | if (SCM_IMP (proc)) |
2541 | { | |
2542 | unmemocar (x, env); | |
2543 | goto badfun; | |
2544 | } | |
2545 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2546 | { | |
2547 | unmemocar (x, env); | |
2548 | ||
2549 | handle_a_macro: | |
368bf056 | 2550 | #ifdef DEVAL |
7c354052 MD |
2551 | /* Set a flag during macro expansion so that macro |
2552 | application frames can be deleted from the backtrace. */ | |
2553 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2554 | #endif |
f8769b1d MV |
2555 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2556 | scm_cons (env, scm_listofnull)); | |
2557 | ||
7c354052 MD |
2558 | #ifdef DEVAL |
2559 | SCM_CLEAR_MACROEXP (debug); | |
2560 | #endif | |
f1267706 | 2561 | switch ((int) (SCM_UNPACK_CAR (proc) >> 16)) |
0f2d19dd JB |
2562 | { |
2563 | case 2: | |
2564 | if (scm_ilength (t.arg1) <= 0) | |
2565 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2566 | #ifdef DEVAL |
2567 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2568 | { | |
f8769b1d | 2569 | |
6dbd0af5 MD |
2570 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2571 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2572 | /* Prevent memoizing result of define macro */ | |
2573 | { | |
2574 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2575 | scm_set_source_properties_x (debug.info->e.exp, | |
2576 | scm_source_properties (x)); | |
2577 | } | |
2578 | #endif | |
2579 | SCM_DEFER_INTS; | |
a23afe53 MD |
2580 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2581 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2582 | SCM_ALLOW_INTS; |
2583 | goto dispatch; | |
2584 | } | |
2585 | /* Prevent memoizing of debug info expression. */ | |
6203706f MD |
2586 | debug.info->e.exp = scm_cons_source (debug.info->e.exp, |
2587 | SCM_CAR (x), | |
2588 | SCM_CDR (x)); | |
6dbd0af5 | 2589 | #endif |
0f2d19dd | 2590 | SCM_DEFER_INTS; |
a23afe53 MD |
2591 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2592 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2593 | SCM_ALLOW_INTS; |
6dbd0af5 | 2594 | goto loopnoap; |
0f2d19dd JB |
2595 | case 1: |
2596 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2597 | goto loopnoap; |
0f2d19dd JB |
2598 | case 0: |
2599 | RETURN (t.arg1); | |
2600 | } | |
2601 | } | |
2602 | } | |
2603 | else | |
2604 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2605 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2606 | #ifndef SCM_RECKLESS |
2607 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2608 | checkargs: |
2609 | #endif | |
2610 | if (SCM_CLOSUREP (proc)) | |
2611 | { | |
2612 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2613 | t.arg1 = SCM_CDR (x); | |
2614 | while (SCM_NIMP (arg2)) | |
2615 | { | |
2616 | if (SCM_NCONSP (arg2)) | |
2617 | goto evapply; | |
2618 | if (SCM_IMP (t.arg1)) | |
2619 | goto umwrongnumargs; | |
2620 | arg2 = SCM_CDR (arg2); | |
2621 | t.arg1 = SCM_CDR (t.arg1); | |
2622 | } | |
2623 | if (SCM_NNULLP (t.arg1)) | |
2624 | goto umwrongnumargs; | |
2625 | } | |
2626 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2627 | goto handle_a_macro; | |
2628 | #endif | |
2629 | } | |
2630 | ||
2631 | ||
6dbd0af5 MD |
2632 | evapply: |
2633 | PREP_APPLY (proc, SCM_EOL); | |
2634 | if (SCM_NULLP (SCM_CDR (x))) { | |
2635 | ENTER_APPLY; | |
89efbff4 | 2636 | evap0: |
0f2d19dd JB |
2637 | switch (SCM_TYP7 (proc)) |
2638 | { /* no arguments given */ | |
2639 | case scm_tc7_subr_0: | |
2640 | RETURN (SCM_SUBRF (proc) ()); | |
2641 | case scm_tc7_subr_1o: | |
2642 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2643 | case scm_tc7_lsubr: | |
2644 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2645 | case scm_tc7_rpsubr: | |
2646 | RETURN (SCM_BOOL_T); | |
2647 | case scm_tc7_asubr: | |
2648 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2649 | #ifdef CCLO |
0f2d19dd JB |
2650 | case scm_tc7_cclo: |
2651 | t.arg1 = proc; | |
2652 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2653 | #ifdef DEVAL |
2654 | debug.info->a.proc = proc; | |
2655 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2656 | #endif | |
0f2d19dd | 2657 | goto evap1; |
6dbd0af5 | 2658 | #endif |
89efbff4 MD |
2659 | case scm_tc7_pws: |
2660 | proc = SCM_PROCEDURE (proc); | |
2661 | #ifdef DEVAL | |
2662 | debug.info->a.proc = proc; | |
2663 | #endif | |
2664 | goto evap0; | |
0f2d19dd JB |
2665 | case scm_tcs_closures: |
2666 | x = SCM_CODE (proc); | |
e2806c10 | 2667 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2668 | goto cdrxbegin; |
da7f71d7 | 2669 | case scm_tcs_cons_gloc: |
195847fa MD |
2670 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2671 | { | |
2672 | x = SCM_ENTITY_PROCEDURE (proc); | |
2673 | arg2 = SCM_EOL; | |
2674 | goto type_dispatch; | |
2675 | } | |
2676 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2677 | goto badfun; |
2678 | else | |
da7f71d7 | 2679 | { |
195847fa MD |
2680 | t.arg1 = proc; |
2681 | proc = (SCM_I_ENTITYP (proc) | |
2682 | ? SCM_ENTITY_PROCEDURE (proc) | |
2683 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 | 2684 | #ifdef DEVAL |
195847fa MD |
2685 | debug.info->a.proc = proc; |
2686 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
da7f71d7 | 2687 | #endif |
195847fa MD |
2688 | if (SCM_NIMP (proc)) |
2689 | goto evap1; | |
2690 | else | |
2691 | goto badfun; | |
da7f71d7 | 2692 | } |
0f2d19dd JB |
2693 | case scm_tc7_contin: |
2694 | case scm_tc7_subr_1: | |
2695 | case scm_tc7_subr_2: | |
2696 | case scm_tc7_subr_2o: | |
2697 | case scm_tc7_cxr: | |
2698 | case scm_tc7_subr_3: | |
2699 | case scm_tc7_lsubr_2: | |
2700 | umwrongnumargs: | |
2701 | unmemocar (x, env); | |
2702 | wrongnumargs: | |
f5bf2977 GH |
2703 | /* scm_everr (x, env,...) */ |
2704 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2705 | default: |
2706 | /* handle macros here */ | |
2707 | goto badfun; | |
2708 | } | |
6dbd0af5 | 2709 | } |
0f2d19dd JB |
2710 | |
2711 | /* must handle macros by here */ | |
2712 | x = SCM_CDR (x); | |
cf7c17e9 | 2713 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2714 | if (SCM_IMP (x)) |
2715 | goto wrongnumargs; | |
680ed4a8 MD |
2716 | else if (SCM_CONSP (x)) |
2717 | { | |
2718 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2719 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2720 | else |
2721 | t.arg1 = EVALCELLCAR (x, env); | |
2722 | } | |
3201d763 | 2723 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2724 | { |
3201d763 DH |
2725 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2726 | if (vcell == 0) | |
680ed4a8 | 2727 | t.arg1 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2728 | else |
2729 | t.arg1 = SCM_PACK (vcell); | |
680ed4a8 MD |
2730 | } |
2731 | else | |
2732 | goto wrongnumargs; | |
2733 | #else | |
0f2d19dd | 2734 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2735 | #endif |
6dbd0af5 MD |
2736 | #ifdef DEVAL |
2737 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2738 | #endif | |
0f2d19dd JB |
2739 | x = SCM_CDR (x); |
2740 | if (SCM_NULLP (x)) | |
2741 | { | |
6dbd0af5 | 2742 | ENTER_APPLY; |
0f2d19dd JB |
2743 | evap1: |
2744 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2745 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2746 | case scm_tc7_subr_2o: |
2747 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2748 | case scm_tc7_subr_1: | |
2749 | case scm_tc7_subr_1o: | |
2750 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2751 | case scm_tc7_cxr: | |
0f2d19dd JB |
2752 | if (SCM_SUBRF (proc)) |
2753 | { | |
2754 | if (SCM_INUMP (t.arg1)) | |
2755 | { | |
2756 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2757 | 0.0)); | |
2758 | } | |
2759 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2760 | if (SCM_REALP (t.arg1)) | |
2761 | { | |
2762 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2763 | } | |
2764 | #ifdef SCM_BIGDIG | |
2765 | if (SCM_BIGP (t.arg1)) | |
2766 | { | |
2767 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2768 | } | |
2769 | #endif | |
2770 | floerr: | |
9de33deb MD |
2771 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), t.arg1, |
2772 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd | 2773 | } |
3201d763 | 2774 | proc = SCM_SNAME (proc); |
0f2d19dd JB |
2775 | { |
2776 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2777 | while ('c' != *--chrs) | |
2778 | { | |
0c95b57d | 2779 | SCM_ASSERT (SCM_CONSP (t.arg1), |
0f2d19dd JB |
2780 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); |
2781 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2782 | } | |
2783 | RETURN (t.arg1); | |
2784 | } | |
2785 | case scm_tc7_rpsubr: | |
2786 | RETURN (SCM_BOOL_T); | |
2787 | case scm_tc7_asubr: | |
2788 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2789 | case scm_tc7_lsubr: | |
2790 | #ifdef DEVAL | |
6dbd0af5 | 2791 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2792 | #else |
2793 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2794 | #endif | |
6dbd0af5 | 2795 | #ifdef CCLO |
0f2d19dd JB |
2796 | case scm_tc7_cclo: |
2797 | arg2 = t.arg1; | |
2798 | t.arg1 = proc; | |
2799 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2800 | #ifdef DEVAL |
2801 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2802 | debug.info->a.proc = proc; | |
2803 | #endif | |
0f2d19dd | 2804 | goto evap2; |
6dbd0af5 | 2805 | #endif |
89efbff4 MD |
2806 | case scm_tc7_pws: |
2807 | proc = SCM_PROCEDURE (proc); | |
2808 | #ifdef DEVAL | |
2809 | debug.info->a.proc = proc; | |
2810 | #endif | |
2811 | goto evap1; | |
0f2d19dd | 2812 | case scm_tcs_closures: |
195847fa | 2813 | /* clos1: */ |
0f2d19dd JB |
2814 | x = SCM_CODE (proc); |
2815 | #ifdef DEVAL | |
e2806c10 | 2816 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2817 | #else |
e2806c10 | 2818 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2819 | #endif |
2820 | goto cdrxbegin; | |
65e41721 MD |
2821 | case scm_tc7_contin: |
2822 | scm_call_continuation (proc, t.arg1); | |
0c32d76c | 2823 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2824 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2825 | { | |
195847fa | 2826 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2827 | #ifdef DEVAL |
2828 | arg2 = debug.info->a.args; | |
2829 | #else | |
2830 | arg2 = scm_cons (t.arg1, SCM_EOL); | |
2831 | #endif | |
f3d2630a MD |
2832 | goto type_dispatch; |
2833 | } | |
2834 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2835 | goto badfun; |
2836 | else | |
0c32d76c | 2837 | { |
195847fa MD |
2838 | arg2 = t.arg1; |
2839 | t.arg1 = proc; | |
2840 | proc = (SCM_I_ENTITYP (proc) | |
2841 | ? SCM_ENTITY_PROCEDURE (proc) | |
2842 | : SCM_OPERATOR_PROCEDURE (proc)); | |
0c32d76c | 2843 | #ifdef DEVAL |
195847fa MD |
2844 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); |
2845 | debug.info->a.proc = proc; | |
0c32d76c | 2846 | #endif |
195847fa MD |
2847 | if (SCM_NIMP (proc)) |
2848 | goto evap2; | |
2849 | else | |
2850 | goto badfun; | |
0c32d76c | 2851 | } |
0f2d19dd JB |
2852 | case scm_tc7_subr_2: |
2853 | case scm_tc7_subr_0: | |
2854 | case scm_tc7_subr_3: | |
2855 | case scm_tc7_lsubr_2: | |
2856 | goto wrongnumargs; | |
2857 | default: | |
2858 | goto badfun; | |
2859 | } | |
2860 | } | |
cf7c17e9 | 2861 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2862 | if (SCM_IMP (x)) |
2863 | goto wrongnumargs; | |
680ed4a8 MD |
2864 | else if (SCM_CONSP (x)) |
2865 | { | |
2866 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2867 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2868 | else |
2869 | arg2 = EVALCELLCAR (x, env); | |
2870 | } | |
3201d763 | 2871 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2872 | { |
3201d763 DH |
2873 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2874 | if (vcell == 0) | |
680ed4a8 | 2875 | arg2 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2876 | else |
2877 | arg2 = SCM_PACK (vcell); | |
680ed4a8 MD |
2878 | } |
2879 | else | |
2880 | goto wrongnumargs; | |
2881 | #else | |
2882 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2883 | #endif |
2884 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2885 | #ifdef DEVAL |
2886 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2887 | #endif | |
0f2d19dd JB |
2888 | x = SCM_CDR (x); |
2889 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2890 | ENTER_APPLY; |
0f2d19dd JB |
2891 | #ifdef CCLO |
2892 | evap2: | |
2893 | #endif | |
6dbd0af5 MD |
2894 | switch (SCM_TYP7 (proc)) |
2895 | { /* have two arguments */ | |
2896 | case scm_tc7_subr_2: | |
2897 | case scm_tc7_subr_2o: | |
2898 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2899 | case scm_tc7_lsubr: | |
0f2d19dd | 2900 | #ifdef DEVAL |
6dbd0af5 MD |
2901 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2902 | #else | |
2903 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2904 | #endif |
6dbd0af5 MD |
2905 | case scm_tc7_lsubr_2: |
2906 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2907 | case scm_tc7_rpsubr: | |
2908 | case scm_tc7_asubr: | |
2909 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2910 | #ifdef CCLO | |
2911 | cclon: | |
2912 | case scm_tc7_cclo: | |
0f2d19dd | 2913 | #ifdef DEVAL |
195847fa MD |
2914 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2915 | scm_cons (proc, debug.info->a.args), | |
2916 | SCM_EOL)); | |
0f2d19dd | 2917 | #else |
195847fa MD |
2918 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2919 | scm_cons2 (proc, t.arg1, | |
2920 | scm_cons (arg2, | |
2921 | scm_eval_args (x, | |
2922 | env, | |
2923 | proc))), | |
2924 | SCM_EOL)); | |
0f2d19dd | 2925 | #endif |
6dbd0af5 MD |
2926 | /* case scm_tc7_cclo: |
2927 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2928 | arg2 = t.arg1; | |
2929 | t.arg1 = proc; | |
2930 | proc = SCM_CCLO_SUBR(proc); | |
2931 | goto evap3; */ | |
2932 | #endif | |
89efbff4 MD |
2933 | case scm_tc7_pws: |
2934 | proc = SCM_PROCEDURE (proc); | |
2935 | #ifdef DEVAL | |
2936 | debug.info->a.proc = proc; | |
2937 | #endif | |
2938 | goto evap2; | |
0c32d76c | 2939 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2940 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2941 | { | |
195847fa | 2942 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2943 | #ifdef DEVAL |
2944 | arg2 = debug.info->a.args; | |
2945 | #else | |
2946 | arg2 = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2947 | #endif | |
f3d2630a MD |
2948 | goto type_dispatch; |
2949 | } | |
2950 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2951 | goto badfun; |
2952 | else | |
0c32d76c | 2953 | { |
195847fa | 2954 | operatorn: |
0c32d76c | 2955 | #ifdef DEVAL |
195847fa MD |
2956 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) |
2957 | ? SCM_ENTITY_PROCEDURE (proc) | |
2958 | : SCM_OPERATOR_PROCEDURE (proc), | |
2959 | scm_cons (proc, debug.info->a.args), | |
2960 | SCM_EOL)); | |
2961 | #else | |
2962 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) | |
2963 | ? SCM_ENTITY_PROCEDURE (proc) | |
2964 | : SCM_OPERATOR_PROCEDURE (proc), | |
2965 | scm_cons2 (proc, t.arg1, | |
2966 | scm_cons (arg2, | |
2967 | scm_eval_args (x, | |
2968 | env, | |
2969 | proc))), | |
2970 | SCM_EOL)); | |
2971 | #endif | |
0c32d76c | 2972 | } |
6dbd0af5 MD |
2973 | case scm_tc7_subr_0: |
2974 | case scm_tc7_cxr: | |
2975 | case scm_tc7_subr_1o: | |
2976 | case scm_tc7_subr_1: | |
2977 | case scm_tc7_subr_3: | |
2978 | case scm_tc7_contin: | |
2979 | goto wrongnumargs; | |
2980 | default: | |
2981 | goto badfun; | |
2982 | case scm_tcs_closures: | |
195847fa | 2983 | /* clos2: */ |
0f2d19dd | 2984 | #ifdef DEVAL |
da7f71d7 MD |
2985 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2986 | debug.info->a.args, | |
2987 | SCM_ENV (proc)); | |
0f2d19dd | 2988 | #else |
da7f71d7 MD |
2989 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2990 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2991 | #endif |
6dbd0af5 MD |
2992 | x = SCM_CODE (proc); |
2993 | goto cdrxbegin; | |
2994 | } | |
0f2d19dd | 2995 | } |
cf7c17e9 | 2996 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2997 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2998 | goto wrongnumargs; | |
2999 | #endif | |
0f2d19dd | 3000 | #ifdef DEVAL |
6dbd0af5 | 3001 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
3002 | scm_deval_args (x, env, proc, |
3003 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 3004 | #endif |
6dbd0af5 | 3005 | ENTER_APPLY; |
89efbff4 | 3006 | evap3: |
6dbd0af5 MD |
3007 | switch (SCM_TYP7 (proc)) |
3008 | { /* have 3 or more arguments */ | |
0f2d19dd | 3009 | #ifdef DEVAL |
6dbd0af5 MD |
3010 | case scm_tc7_subr_3: |
3011 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
3012 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
3013 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 3014 | case scm_tc7_asubr: |
399dedcc MD |
3015 | #ifdef BUILTIN_RPASUBR |
3016 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
3017 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
3018 | do |
3019 | { | |
3020 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
3021 | arg2 = SCM_CDR (arg2); | |
3022 | } | |
3023 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
3024 | RETURN (t.arg1) |
3025 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3026 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3027 | #ifdef BUILTIN_RPASUBR |
3028 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3029 | RETURN (SCM_BOOL_F) | |
3030 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
3031 | do |
3032 | { | |
3033 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
3034 | RETURN (SCM_BOOL_F) | |
3035 | arg2 = SCM_CAR (t.arg1); | |
3036 | t.arg1 = SCM_CDR (t.arg1); | |
3037 | } | |
3038 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
3039 | RETURN (SCM_BOOL_T) |
3040 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
3041 | RETURN (SCM_APPLY (proc, t.arg1, |
3042 | scm_acons (arg2, | |
3043 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
3044 | SCM_EOL))) | |
71d3aa6d | 3045 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 3046 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
3047 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
3048 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
3049 | case scm_tc7_lsubr: |
3050 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 3051 | #ifdef CCLO |
6dbd0af5 MD |
3052 | case scm_tc7_cclo: |
3053 | goto cclon; | |
0f2d19dd | 3054 | #endif |
89efbff4 MD |
3055 | case scm_tc7_pws: |
3056 | proc = SCM_PROCEDURE (proc); | |
3057 | debug.info->a.proc = proc; | |
3058 | goto evap3; | |
6dbd0af5 | 3059 | case scm_tcs_closures: |
b7ff98dd | 3060 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 3061 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
3062 | debug.info->a.args, |
3063 | SCM_ENV (proc)); | |
3064 | x = SCM_CODE (proc); | |
3065 | goto cdrxbegin; | |
3066 | #else /* DEVAL */ | |
3067 | case scm_tc7_subr_3: | |
3068 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
3069 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
3070 | case scm_tc7_asubr: | |
399dedcc | 3071 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
3072 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
3073 | do | |
3074 | { | |
3075 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
3076 | x = SCM_CDR(x); | |
3077 | } | |
3078 | while (SCM_NIMP (x)); | |
399dedcc MD |
3079 | RETURN (t.arg1) |
3080 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3081 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3082 | #ifdef BUILTIN_RPASUBR |
3083 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3084 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
3085 | do |
3086 | { | |
3087 | t.arg1 = EVALCAR (x, env); | |
3088 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
3089 | RETURN (SCM_BOOL_F) | |
3090 | arg2 = t.arg1; | |
3091 | x = SCM_CDR (x); | |
3092 | } | |
3093 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
3094 | RETURN (SCM_BOOL_T) |
3095 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 3096 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
3097 | scm_acons (arg2, |
3098 | scm_eval_args (x, env, proc), | |
3099 | SCM_EOL))); | |
71d3aa6d | 3100 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 3101 | case scm_tc7_lsubr_2: |
680ed4a8 | 3102 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 3103 | case scm_tc7_lsubr: |
680ed4a8 MD |
3104 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
3105 | arg2, | |
3106 | scm_eval_args (x, env, proc)))); | |
0f2d19dd | 3107 | #ifdef CCLO |
6dbd0af5 MD |
3108 | case scm_tc7_cclo: |
3109 | goto cclon; | |
0f2d19dd | 3110 | #endif |
89efbff4 MD |
3111 | case scm_tc7_pws: |
3112 | proc = SCM_PROCEDURE (proc); | |
3113 | goto evap3; | |
6dbd0af5 MD |
3114 | case scm_tcs_closures: |
3115 | #ifdef DEVAL | |
b7ff98dd | 3116 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 3117 | #endif |
e2806c10 | 3118 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
3119 | scm_cons2 (t.arg1, |
3120 | arg2, | |
3121 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
3122 | SCM_ENV (proc)); |
3123 | x = SCM_CODE (proc); | |
3124 | goto cdrxbegin; | |
0f2d19dd | 3125 | #endif /* DEVAL */ |
0c32d76c | 3126 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3127 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3128 | { | |
3129 | #ifdef DEVAL | |
3130 | arg2 = debug.info->a.args; | |
3131 | #else | |
3132 | arg2 = scm_cons2 (t.arg1, arg2, scm_eval_args (x, env, proc)); | |
3133 | #endif | |
195847fa | 3134 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
3135 | goto type_dispatch; |
3136 | } | |
3137 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3138 | goto badfun; |
3139 | else | |
195847fa | 3140 | goto operatorn; |
6dbd0af5 MD |
3141 | case scm_tc7_subr_2: |
3142 | case scm_tc7_subr_1o: | |
3143 | case scm_tc7_subr_2o: | |
3144 | case scm_tc7_subr_0: | |
3145 | case scm_tc7_cxr: | |
3146 | case scm_tc7_subr_1: | |
3147 | case scm_tc7_contin: | |
3148 | goto wrongnumargs; | |
3149 | default: | |
3150 | goto badfun; | |
3151 | } | |
0f2d19dd JB |
3152 | } |
3153 | #ifdef DEVAL | |
6dbd0af5 | 3154 | exit: |
b6d75948 | 3155 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3156 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3157 | { |
b7ff98dd MD |
3158 | SCM_CLEAR_TRACED_FRAME (debug); |
3159 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3160 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3161 | else |
3162 | { | |
3163 | scm_make_cont (&t.arg1); | |
ca6ef71a | 3164 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
3165 | { |
3166 | proc = SCM_THROW_VALUE (t.arg1); | |
3167 | goto ret; | |
3168 | } | |
3169 | } | |
2f0d1375 | 3170 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3171 | } |
3172 | ret: | |
1646d37b | 3173 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3174 | return proc; |
3175 | #endif | |
3176 | } | |
3177 | ||
6dbd0af5 MD |
3178 | |
3179 | /* SECTION: This code is compiled once. | |
3180 | */ | |
3181 | ||
0f2d19dd JB |
3182 | #ifndef DEVAL |
3183 | ||
82a2622a | 3184 | /* This code processes the arguments to apply: |
b145c172 JB |
3185 | |
3186 | (apply PROC ARG1 ... ARGS) | |
3187 | ||
82a2622a JB |
3188 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
3189 | ... arguments onto the front of ARGS, and returns the resulting | |
3190 | list. Note that ARGS is a list; thus, the argument to this | |
3191 | function is a list whose last element is a list. | |
3192 | ||
3193 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
3194 | result. apply:nconc2last takes care of building the list of |
3195 | arguments, given (ARG1 ... ARGS). | |
3196 | ||
82a2622a JB |
3197 | Rather than do new consing, apply:nconc2last destroys its argument. |
3198 | On that topic, this code came into my care with the following | |
3199 | beautifully cryptic comment on that topic: "This will only screw | |
3200 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
3201 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 3202 | |
3b3b36dd | 3203 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
1bbd0b84 | 3204 | (SCM lst), |
b380b885 | 3205 | "") |
1bbd0b84 | 3206 | #define FUNC_NAME s_scm_nconc2last |
0f2d19dd JB |
3207 | { |
3208 | SCM *lloc; | |
c1bfcf60 | 3209 | SCM_VALIDATE_NONEMPTYLIST (1,lst); |
0f2d19dd JB |
3210 | lloc = &lst; |
3211 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 3212 | lloc = SCM_CDRLOC (*lloc); |
1bbd0b84 | 3213 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
3214 | *lloc = SCM_CAR (*lloc); |
3215 | return lst; | |
3216 | } | |
1bbd0b84 | 3217 | #undef FUNC_NAME |
0f2d19dd JB |
3218 | |
3219 | #endif /* !DEVAL */ | |
3220 | ||
6dbd0af5 MD |
3221 | |
3222 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
3223 | * It is compiled twice. | |
3224 | */ | |
3225 | ||
0f2d19dd | 3226 | #if 0 |
1cc91f1b | 3227 | |
0f2d19dd | 3228 | SCM |
6e8d25a6 | 3229 | scm_apply (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3230 | {} |
3231 | #endif | |
3232 | ||
3233 | #if 0 | |
1cc91f1b | 3234 | |
0f2d19dd | 3235 | SCM |
6e8d25a6 GB |
3236 | scm_dapply (SCM proc, SCM arg1, SCM args) |
3237 | { /* empty */ } | |
0f2d19dd JB |
3238 | #endif |
3239 | ||
1cc91f1b | 3240 | |
82a2622a JB |
3241 | /* Apply a function to a list of arguments. |
3242 | ||
3243 | This function is exported to the Scheme level as taking two | |
3244 | required arguments and a tail argument, as if it were: | |
3245 | (lambda (proc arg1 . args) ...) | |
3246 | Thus, if you just have a list of arguments to pass to a procedure, | |
3247 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
3248 | args, pass the first as ARG1, then cons any remaining fixed args | |
3249 | onto the front of your argument list, and pass that as ARGS. */ | |
3250 | ||
0f2d19dd | 3251 | SCM |
1bbd0b84 | 3252 | SCM_APPLY (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3253 | { |
3254 | #ifdef DEBUG_EXTENSIONS | |
3255 | #ifdef DEVAL | |
6dbd0af5 | 3256 | scm_debug_frame debug; |
c0ab1b8d | 3257 | scm_debug_info debug_vect_body; |
1646d37b | 3258 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 3259 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 3260 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
3261 | debug.vect[0].a.proc = proc; |
3262 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 3263 | scm_last_debug_frame = &debug; |
0f2d19dd | 3264 | #else |
b7ff98dd | 3265 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
3266 | return scm_dapply (proc, arg1, args); |
3267 | #endif | |
3268 | #endif | |
3269 | ||
3270 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
3271 | |
3272 | /* If ARGS is the empty list, then we're calling apply with only two | |
3273 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
3274 | the case, futz with things so that ARG1 is the first argument to | |
3275 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
3276 | rest. |
3277 | ||
3278 | Setting the debug apply frame args this way is pretty messy. | |
3279 | Perhaps we should store arg1 and args directly in the frame as | |
3280 | received, and let scm_frame_arguments unpack them, because that's | |
3281 | a relatively rare operation. This works for now; if the Guile | |
3282 | developer archives are still around, see Mikael's post of | |
3283 | 11-Apr-97. */ | |
0f2d19dd JB |
3284 | if (SCM_NULLP (args)) |
3285 | { | |
3286 | if (SCM_NULLP (arg1)) | |
30000774 JB |
3287 | { |
3288 | arg1 = SCM_UNDEFINED; | |
3289 | #ifdef DEVAL | |
3290 | debug.vect[0].a.args = SCM_EOL; | |
3291 | #endif | |
3292 | } | |
0f2d19dd JB |
3293 | else |
3294 | { | |
30000774 JB |
3295 | #ifdef DEVAL |
3296 | debug.vect[0].a.args = arg1; | |
3297 | #endif | |
0f2d19dd JB |
3298 | args = SCM_CDR (arg1); |
3299 | arg1 = SCM_CAR (arg1); | |
3300 | } | |
3301 | } | |
3302 | else | |
3303 | { | |
0c95b57d | 3304 | /* SCM_ASRTGO(SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 3305 | args = scm_nconc2last (args); |
30000774 JB |
3306 | #ifdef DEVAL |
3307 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3308 | #endif | |
0f2d19dd | 3309 | } |
0f2d19dd | 3310 | #ifdef DEVAL |
b6d75948 | 3311 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
3312 | { |
3313 | SCM tmp; | |
b7ff98dd | 3314 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 3315 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3316 | else |
3317 | { | |
3318 | scm_make_cont (&tmp); | |
ca6ef71a | 3319 | if (setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
3320 | goto entap; |
3321 | } | |
2f0d1375 | 3322 | scm_ithrow (scm_sym_enter_frame, scm_cons (tmp, SCM_EOL), 0); |
6dbd0af5 MD |
3323 | } |
3324 | entap: | |
3325 | ENTER_APPLY; | |
3326 | #endif | |
3327 | #ifdef CCLO | |
3328 | tail: | |
0f2d19dd JB |
3329 | #endif |
3330 | switch (SCM_TYP7 (proc)) | |
3331 | { | |
3332 | case scm_tc7_subr_2o: | |
3333 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
3334 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3335 | case scm_tc7_subr_2: | |
269861c7 MD |
3336 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
3337 | wrongnumargs); | |
0f2d19dd JB |
3338 | args = SCM_CAR (args); |
3339 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3340 | case scm_tc7_subr_0: | |
3341 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
3342 | RETURN (SCM_SUBRF (proc) ()) | |
3343 | case scm_tc7_subr_1: | |
3344 | case scm_tc7_subr_1o: | |
3345 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3346 | RETURN (SCM_SUBRF (proc) (arg1)) | |
3347 | case scm_tc7_cxr: | |
3348 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
0f2d19dd JB |
3349 | if (SCM_SUBRF (proc)) |
3350 | { | |
6dbd0af5 MD |
3351 | if (SCM_INUMP (arg1)) |
3352 | { | |
3353 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
3354 | } | |
0f2d19dd | 3355 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
3356 | if (SCM_REALP (arg1)) |
3357 | { | |
3358 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
3359 | } | |
0f2d19dd | 3360 | #ifdef SCM_BIGDIG |
26d5b9b4 | 3361 | if (SCM_BIGP (arg1)) |
0f2d19dd JB |
3362 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) |
3363 | #endif | |
3364 | floerr: | |
9de33deb MD |
3365 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), arg1, |
3366 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd | 3367 | } |
3201d763 | 3368 | proc = SCM_SNAME (proc); |
0f2d19dd JB |
3369 | { |
3370 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
3371 | while ('c' != *--chrs) | |
3372 | { | |
0c95b57d | 3373 | SCM_ASSERT (SCM_CONSP (arg1), |
0f2d19dd JB |
3374 | arg1, SCM_ARG1, SCM_CHARS (proc)); |
3375 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
3376 | } | |
3377 | RETURN (arg1) | |
3378 | } | |
3379 | case scm_tc7_subr_3: | |
3380 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
3381 | case scm_tc7_lsubr: | |
3382 | #ifdef DEVAL | |
6dbd0af5 | 3383 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
3384 | #else |
3385 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
3386 | #endif | |
3387 | case scm_tc7_lsubr_2: | |
0c95b57d | 3388 | SCM_ASRTGO (SCM_CONSP (args), wrongnumargs); |
0f2d19dd JB |
3389 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) |
3390 | case scm_tc7_asubr: | |
3391 | if (SCM_NULLP (args)) | |
3392 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
3393 | while (SCM_NIMP (args)) | |
3394 | { | |
3395 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3396 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
3397 | args = SCM_CDR (args); | |
3398 | } | |
3399 | RETURN (arg1); | |
3400 | case scm_tc7_rpsubr: | |
3401 | if (SCM_NULLP (args)) | |
3402 | RETURN (SCM_BOOL_T); | |
3403 | while (SCM_NIMP (args)) | |
3404 | { | |
3405 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3406 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
3407 | RETURN (SCM_BOOL_F); | |
3408 | arg1 = SCM_CAR (args); | |
3409 | args = SCM_CDR (args); | |
3410 | } | |
3411 | RETURN (SCM_BOOL_T); | |
3412 | case scm_tcs_closures: | |
3413 | #ifdef DEVAL | |
6dbd0af5 | 3414 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
3415 | #else |
3416 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3417 | #endif | |
cf7c17e9 | 3418 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3419 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3420 | goto wrongnumargs; | |
3421 | #endif | |
1609038c MD |
3422 | |
3423 | /* Copy argument list */ | |
3424 | if (SCM_IMP (arg1)) | |
3425 | args = arg1; | |
3426 | else | |
3427 | { | |
3428 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
cabe682c | 3429 | while (arg1 = SCM_CDR (arg1), SCM_CONSP (arg1)) |
1609038c MD |
3430 | { |
3431 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3432 | SCM_UNSPECIFIED)); | |
3433 | tl = SCM_CDR (tl); | |
3434 | } | |
3435 | SCM_SETCDR (tl, arg1); | |
3436 | } | |
3437 | ||
3438 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
2ddb0920 | 3439 | proc = SCM_CDR (SCM_CODE (proc)); |
e791c18f MD |
3440 | again: |
3441 | arg1 = proc; | |
3442 | while (SCM_NNULLP (arg1 = SCM_CDR (arg1))) | |
2ddb0920 MD |
3443 | { |
3444 | if (SCM_IMP (SCM_CAR (proc))) | |
3445 | { | |
3446 | if (SCM_ISYMP (SCM_CAR (proc))) | |
3447 | { | |
3448 | proc = scm_m_expand_body (proc, args); | |
e791c18f | 3449 | goto again; |
2ddb0920 | 3450 | } |
2ddb0920 MD |
3451 | } |
3452 | else | |
e791c18f MD |
3453 | SCM_CEVAL (SCM_CAR (proc), args); |
3454 | proc = arg1; | |
2ddb0920 | 3455 | } |
e791c18f | 3456 | RETURN (EVALCAR (proc, args)); |
0f2d19dd JB |
3457 | case scm_tc7_contin: |
3458 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3459 | scm_call_continuation (proc, arg1); | |
3460 | #ifdef CCLO | |
3461 | case scm_tc7_cclo: | |
3462 | #ifdef DEVAL | |
6dbd0af5 MD |
3463 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3464 | arg1 = proc; | |
3465 | proc = SCM_CCLO_SUBR (proc); | |
3466 | debug.vect[0].a.proc = proc; | |
3467 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3468 | #else |
3469 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3470 | arg1 = proc; |
3471 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3472 | #endif |
0f2d19dd JB |
3473 | goto tail; |
3474 | #endif | |
89efbff4 MD |
3475 | case scm_tc7_pws: |
3476 | proc = SCM_PROCEDURE (proc); | |
3477 | #ifdef DEVAL | |
3478 | debug.vect[0].a.proc = proc; | |
3479 | #endif | |
3480 | goto tail; | |
0c32d76c | 3481 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3482 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3483 | { | |
3484 | #ifdef DEVAL | |
3485 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3486 | #else | |
3487 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3488 | #endif | |
195847fa | 3489 | RETURN (scm_apply_generic (proc, args)); |
f3d2630a MD |
3490 | } |
3491 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3492 | goto badproc; |
3493 | else | |
da7f71d7 MD |
3494 | { |
3495 | #ifdef DEVAL | |
3496 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3497 | #else | |
3498 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3499 | #endif | |
3500 | arg1 = proc; | |
195847fa MD |
3501 | proc = (SCM_I_ENTITYP (proc) |
3502 | ? SCM_ENTITY_PROCEDURE (proc) | |
3503 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 MD |
3504 | #ifdef DEVAL |
3505 | debug.vect[0].a.proc = proc; | |
3506 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3507 | #endif | |
195847fa MD |
3508 | if (SCM_NIMP (proc)) |
3509 | goto tail; | |
3510 | else | |
3511 | goto badproc; | |
da7f71d7 | 3512 | } |
0f2d19dd | 3513 | wrongnumargs: |
f5bf2977 | 3514 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3515 | default: |
3516 | badproc: | |
3517 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3518 | RETURN (arg1); | |
3519 | } | |
3520 | #ifdef DEVAL | |
6dbd0af5 | 3521 | exit: |
b6d75948 | 3522 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3523 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3524 | { |
b7ff98dd MD |
3525 | SCM_CLEAR_TRACED_FRAME (debug); |
3526 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3527 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3528 | else |
3529 | { | |
3530 | scm_make_cont (&arg1); | |
ca6ef71a | 3531 | if (setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
3532 | { |
3533 | proc = SCM_THROW_VALUE (arg1); | |
3534 | goto ret; | |
3535 | } | |
3536 | } | |
2f0d1375 | 3537 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3538 | } |
3539 | ret: | |
1646d37b | 3540 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3541 | return proc; |
3542 | #endif | |
3543 | } | |
3544 | ||
6dbd0af5 MD |
3545 | |
3546 | /* SECTION: The rest of this file is only read once. | |
3547 | */ | |
3548 | ||
0f2d19dd JB |
3549 | #ifndef DEVAL |
3550 | ||
d9c393f5 JB |
3551 | /* Typechecking for multi-argument MAP and FOR-EACH. |
3552 | ||
47c3f06d | 3553 | Verify that each element of the vector ARGV, except for the first, |
d9c393f5 | 3554 | is a proper list whose length is LEN. Attribute errors to WHO, |
47c3f06d | 3555 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ |
d9c393f5 | 3556 | static inline void |
47c3f06d MD |
3557 | check_map_args (SCM argv, |
3558 | long len, | |
3559 | SCM gf, | |
3560 | SCM proc, | |
3561 | SCM args, | |
3562 | const char *who) | |
d9c393f5 | 3563 | { |
47c3f06d | 3564 | SCM *ve = SCM_VELTS (argv); |
d9c393f5 JB |
3565 | int i; |
3566 | ||
47c3f06d | 3567 | for (i = SCM_LENGTH (argv) - 1; i >= 1; i--) |
d9c393f5 JB |
3568 | { |
3569 | int elt_len = scm_ilength (ve[i]); | |
3570 | ||
3571 | if (elt_len < 0) | |
47c3f06d MD |
3572 | { |
3573 | if (gf) | |
3574 | scm_apply_generic (gf, scm_cons (proc, args)); | |
3575 | else | |
3576 | scm_wrong_type_arg (who, i + 2, ve[i]); | |
3577 | } | |
d9c393f5 JB |
3578 | |
3579 | if (elt_len != len) | |
3580 | scm_out_of_range (who, ve[i]); | |
3581 | } | |
3582 | ||
47c3f06d | 3583 | scm_remember (&argv); |
d9c393f5 JB |
3584 | } |
3585 | ||
3586 | ||
47c3f06d | 3587 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
1cc91f1b | 3588 | |
368bf056 MD |
3589 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3590 | sequentially, starting with the first element(s). This is used in | |
3591 | evalext.c where the Scheme procedure `serial-map', which guarantees | |
3592 | sequential behaviour, is implemented using scm_map. If the | |
3593 | behaviour changes, we need to update `serial-map'. | |
3594 | */ | |
3595 | ||
0f2d19dd | 3596 | SCM |
1bbd0b84 | 3597 | scm_map (SCM proc, SCM arg1, SCM args) |
0f2d19dd | 3598 | { |
d9c393f5 | 3599 | long i, len; |
0f2d19dd JB |
3600 | SCM res = SCM_EOL; |
3601 | SCM *pres = &res; | |
3602 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3603 | ||
3604 | if (SCM_NULLP (arg1)) | |
3605 | return res; | |
d9c393f5 | 3606 | len = scm_ilength (arg1); |
47c3f06d MD |
3607 | SCM_GASSERTn (len >= 0, |
3608 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
0f2d19dd JB |
3609 | if (SCM_NULLP (args)) |
3610 | { | |
3611 | while (SCM_NIMP (arg1)) | |
3612 | { | |
47c3f06d MD |
3613 | SCM_GASSERT2 (SCM_CONSP (arg1), g_map, proc, arg1, SCM_ARG2, s_map); |
3614 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), | |
3615 | SCM_EOL); | |
a23afe53 | 3616 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3617 | arg1 = SCM_CDR (arg1); |
3618 | } | |
3619 | return res; | |
3620 | } | |
47c3f06d | 3621 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3622 | ve = SCM_VELTS (args); |
cf7c17e9 | 3623 | #ifndef SCM_RECKLESS |
47c3f06d | 3624 | check_map_args (args, len, g_map, proc, arg1, s_map); |
0f2d19dd JB |
3625 | #endif |
3626 | while (1) | |
3627 | { | |
3628 | arg1 = SCM_EOL; | |
3629 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3630 | { | |
d9c393f5 JB |
3631 | if (SCM_IMP (ve[i])) |
3632 | return res; | |
0f2d19dd JB |
3633 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); |
3634 | ve[i] = SCM_CDR (ve[i]); | |
3635 | } | |
3636 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3637 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3638 | } |
3639 | } | |
3640 | ||
3641 | ||
47c3f06d | 3642 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
1cc91f1b | 3643 | |
0f2d19dd | 3644 | SCM |
1bbd0b84 | 3645 | scm_for_each (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3646 | { |
3647 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
d9c393f5 | 3648 | long i, len; |
0f2d19dd JB |
3649 | if SCM_NULLP (arg1) |
3650 | return SCM_UNSPECIFIED; | |
d9c393f5 | 3651 | len = scm_ilength (arg1); |
47c3f06d MD |
3652 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), |
3653 | SCM_ARG2, s_for_each); | |
0f2d19dd JB |
3654 | if SCM_NULLP (args) |
3655 | { | |
3656 | while SCM_NIMP (arg1) | |
3657 | { | |
47c3f06d MD |
3658 | SCM_GASSERT2 (SCM_CONSP (arg1), |
3659 | g_for_each, proc, arg1, SCM_ARG2, s_for_each); | |
0f2d19dd JB |
3660 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); |
3661 | arg1 = SCM_CDR (arg1); | |
3662 | } | |
3663 | return SCM_UNSPECIFIED; | |
3664 | } | |
47c3f06d | 3665 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3666 | ve = SCM_VELTS (args); |
cf7c17e9 | 3667 | #ifndef SCM_RECKLESS |
47c3f06d | 3668 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); |
0f2d19dd JB |
3669 | #endif |
3670 | while (1) | |
3671 | { | |
3672 | arg1 = SCM_EOL; | |
3673 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3674 | { | |
3675 | if SCM_IMP | |
3676 | (ve[i]) return SCM_UNSPECIFIED; | |
3677 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3678 | ve[i] = SCM_CDR (ve[i]); | |
3679 | } | |
3680 | scm_apply (proc, arg1, SCM_EOL); | |
3681 | } | |
3682 | } | |
3683 | ||
3684 | ||
1cc91f1b | 3685 | |
0f2d19dd | 3686 | SCM |
6e8d25a6 | 3687 | scm_closure (SCM code, SCM env) |
0f2d19dd JB |
3688 | { |
3689 | register SCM z; | |
3690 | SCM_NEWCELL (z); | |
3691 | SCM_SETCODE (z, code); | |
a23afe53 | 3692 | SCM_SETENV (z, env); |
0f2d19dd JB |
3693 | return z; |
3694 | } | |
3695 | ||
3696 | ||
3697 | long scm_tc16_promise; | |
1cc91f1b | 3698 | |
0f2d19dd | 3699 | SCM |
6e8d25a6 | 3700 | scm_makprom (SCM code) |
0f2d19dd | 3701 | { |
cf498326 | 3702 | SCM_RETURN_NEWSMOB (scm_tc16_promise, SCM_UNPACK (code)); |
0f2d19dd JB |
3703 | } |
3704 | ||
3705 | ||
1cc91f1b | 3706 | |
0f2d19dd | 3707 | static int |
1bbd0b84 | 3708 | prinprom (SCM exp,SCM port,scm_print_state *pstate) |
0f2d19dd | 3709 | { |
19402679 | 3710 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3711 | scm_puts ("#<promise ", port); |
19402679 MD |
3712 | SCM_SET_WRITINGP (pstate, 1); |
3713 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3714 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3715 | scm_putc ('>', port); |
0f2d19dd JB |
3716 | return !0; |
3717 | } | |
3718 | ||
3719 | ||
3b3b36dd | 3720 | SCM_DEFINE (scm_force, "force", 1, 0, 0, |
1bbd0b84 | 3721 | (SCM x), |
b380b885 | 3722 | "") |
1bbd0b84 | 3723 | #define FUNC_NAME s_scm_force |
0f2d19dd | 3724 | { |
3b3b36dd | 3725 | SCM_VALIDATE_SMOB (1,x,promise); |
f1267706 | 3726 | if (!((1L << 16) & SCM_UNPACK_CAR (x))) |
0f2d19dd JB |
3727 | { |
3728 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
f1267706 | 3729 | if (!((1L << 16) & SCM_UNPACK_CAR (x))) |
0f2d19dd JB |
3730 | { |
3731 | SCM_DEFER_INTS; | |
a23afe53 MD |
3732 | SCM_SETCDR (x, ans); |
3733 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3734 | SCM_ALLOW_INTS; |
3735 | } | |
3736 | } | |
3737 | return SCM_CDR (x); | |
3738 | } | |
1bbd0b84 | 3739 | #undef FUNC_NAME |
0f2d19dd | 3740 | |
a1ec6916 | 3741 | SCM_DEFINE (scm_promise_p, "promise?", 1, 0, 0, |
1bbd0b84 | 3742 | (SCM x), |
b380b885 MD |
3743 | "Return true if @var{obj} is a promise, i.e. a delayed computation\n" |
3744 | "(@pxref{Delayed evaluation,,,r4rs.info,The Revised^4 Report on Scheme}).") | |
1bbd0b84 | 3745 | #define FUNC_NAME s_scm_promise_p |
0f2d19dd | 3746 | { |
1bbd0b84 | 3747 | return SCM_BOOL(SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)); |
0f2d19dd | 3748 | } |
1bbd0b84 | 3749 | #undef FUNC_NAME |
0f2d19dd | 3750 | |
a1ec6916 | 3751 | SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0, |
1bbd0b84 | 3752 | (SCM xorig, SCM x, SCM y), |
b380b885 | 3753 | "") |
1bbd0b84 | 3754 | #define FUNC_NAME s_scm_cons_source |
26d5b9b4 MD |
3755 | { |
3756 | SCM p, z; | |
3757 | SCM_NEWCELL (z); | |
3758 | SCM_SETCAR (z, x); | |
3759 | SCM_SETCDR (z, y); | |
3760 | /* Copy source properties possibly associated with xorig. */ | |
3761 | p = scm_whash_lookup (scm_source_whash, xorig); | |
3762 | if (SCM_NIMP (p)) | |
3763 | scm_whash_insert (scm_source_whash, z, p); | |
3764 | return z; | |
3765 | } | |
1bbd0b84 | 3766 | #undef FUNC_NAME |
26d5b9b4 | 3767 | |
a1ec6916 | 3768 | SCM_DEFINE (scm_copy_tree, "copy-tree", 1, 0, 0, |
1bbd0b84 | 3769 | (SCM obj), |
b380b885 MD |
3770 | "Recursively copy the data tree that is bound to @var{obj}, and return a\n" |
3771 | "pointer to the new data structure. @code{copy-tree} recurses down the\n" | |
3772 | "contents of both pairs and vectors (since both cons cells and vector\n" | |
3773 | "cells may point to arbitrary objects), and stops recursing when it hits\n" | |
3774 | "any other object.") | |
1bbd0b84 | 3775 | #define FUNC_NAME s_scm_copy_tree |
0f2d19dd JB |
3776 | { |
3777 | SCM ans, tl; | |
26d5b9b4 | 3778 | if (SCM_IMP (obj)) |
ff467021 | 3779 | return obj; |
3910272e MD |
3780 | if (SCM_VECTORP (obj)) |
3781 | { | |
3782 | scm_sizet i = SCM_LENGTH (obj); | |
3783 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); | |
3784 | while (i--) | |
3785 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3786 | return ans; | |
3787 | } | |
ff467021 | 3788 | if (SCM_NCONSP (obj)) |
0f2d19dd JB |
3789 | return obj; |
3790 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
26d5b9b4 MD |
3791 | ans = tl = scm_cons_source (obj, |
3792 | scm_copy_tree (SCM_CAR (obj)), | |
3793 | SCM_UNSPECIFIED); | |
cabe682c | 3794 | while (obj = SCM_CDR (obj), SCM_CONSP (obj)) |
a23afe53 MD |
3795 | { |
3796 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3797 | SCM_UNSPECIFIED)); | |
3798 | tl = SCM_CDR (tl); | |
3799 | } | |
3800 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3801 | return ans; |
3802 | } | |
1bbd0b84 | 3803 | #undef FUNC_NAME |
0f2d19dd | 3804 | |
1cc91f1b | 3805 | |
0f2d19dd | 3806 | SCM |
1bbd0b84 | 3807 | scm_eval_3 (SCM obj, int copyp, SCM env) |
0f2d19dd JB |
3808 | { |
3809 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3810 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3811 | else if (copyp) | |
3812 | obj = scm_copy_tree (obj); | |
6cb702da | 3813 | return SCM_XEVAL (obj, env); |
0f2d19dd JB |
3814 | } |
3815 | ||
3b3b36dd | 3816 | SCM_DEFINE (scm_eval2, "eval2", 2, 0, 0, |
1bbd0b84 | 3817 | (SCM obj, SCM env_thunk), |
b380b885 MD |
3818 | "Evaluate @var{exp}, a Scheme expression, in the environment designated\n" |
3819 | "by @var{lookup}, a symbol-lookup function. @code{(eval exp)} is\n" | |
3820 | "equivalent to @code{(eval2 exp *top-level-lookup-closure*)}.") | |
1bbd0b84 | 3821 | #define FUNC_NAME s_scm_eval2 |
0f2d19dd | 3822 | { |
6bcb0868 | 3823 | return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk)); |
0f2d19dd | 3824 | } |
1bbd0b84 | 3825 | #undef FUNC_NAME |
0f2d19dd | 3826 | |
3b3b36dd | 3827 | SCM_DEFINE (scm_eval, "eval", 1, 0, 0, |
1bbd0b84 | 3828 | (SCM obj), |
b380b885 MD |
3829 | "Evaluate @var{exp}, a list representing a Scheme expression, in the\n" |
3830 | "top-level environment.") | |
1bbd0b84 | 3831 | #define FUNC_NAME s_scm_eval |
0f2d19dd | 3832 | { |
6bcb0868 MD |
3833 | return scm_eval_3 (obj, |
3834 | 1, | |
3835 | scm_top_level_env | |
3836 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd | 3837 | } |
1bbd0b84 | 3838 | #undef FUNC_NAME |
0f2d19dd | 3839 | |
1bbd0b84 GB |
3840 | /* |
3841 | SCM_REGISTER_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); | |
3842 | */ | |
1cc91f1b | 3843 | |
0f2d19dd | 3844 | SCM |
1bbd0b84 | 3845 | scm_eval_x (SCM obj) |
0f2d19dd | 3846 | { |
6bcb0868 MD |
3847 | return scm_eval_3 (obj, |
3848 | 0, | |
3849 | scm_top_level_env | |
3850 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3851 | } |
3852 | ||
6dbd0af5 MD |
3853 | |
3854 | /* At this point, scm_deval and scm_dapply are generated. | |
3855 | */ | |
3856 | ||
0f2d19dd | 3857 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3858 | # define DEVAL |
3859 | # include "eval.c" | |
0f2d19dd JB |
3860 | #endif |
3861 | ||
3862 | ||
1cc91f1b | 3863 | |
0f2d19dd JB |
3864 | void |
3865 | scm_init_eval () | |
0f2d19dd | 3866 | { |
33b97402 MD |
3867 | scm_init_opts (scm_evaluator_traps, |
3868 | scm_evaluator_trap_table, | |
3869 | SCM_N_EVALUATOR_TRAPS); | |
3870 | scm_init_opts (scm_eval_options_interface, | |
3871 | scm_eval_opts, | |
3872 | SCM_N_EVAL_OPTIONS); | |
3873 | ||
f99c9c28 MD |
3874 | scm_tc16_promise = scm_make_smob_type ("promise", 0); |
3875 | scm_set_smob_mark (scm_tc16_promise, scm_markcdr); | |
3876 | scm_set_smob_print (scm_tc16_promise, prinprom); | |
b8229a3b | 3877 | |
81123e6d | 3878 | scm_f_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
0f2d19dd | 3879 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); |
2f0d1375 MD |
3880 | scm_sym_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); |
3881 | scm_sym_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3882 | scm_sym_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3883 | scm_sym_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3884 | scm_sym_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
0f2d19dd | 3885 | |
43a912cf MD |
3886 | scm_lisp_nil = scm_sysintern ("nil", SCM_UNDEFINED); |
3887 | SCM_SETCDR (scm_lisp_nil, SCM_CAR (scm_lisp_nil)); | |
3888 | scm_lisp_nil = SCM_CAR (scm_lisp_nil); | |
3889 | scm_lisp_t = scm_sysintern ("t", SCM_UNDEFINED); | |
3890 | SCM_SETCDR (scm_lisp_t, SCM_CAR (scm_lisp_t)); | |
3891 | scm_lisp_t = SCM_CAR (scm_lisp_t); | |
73b64342 | 3892 | |
0f2d19dd | 3893 | /* acros */ |
0f2d19dd JB |
3894 | /* end of acros */ |
3895 | ||
dc19d1d2 JB |
3896 | scm_top_level_lookup_closure_var = |
3897 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3898 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3899 | |
6dbd0af5 | 3900 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
3901 | scm_sym_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); |
3902 | scm_sym_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3903 | scm_sym_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3904 | scm_sym_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
6dbd0af5 MD |
3905 | #endif |
3906 | ||
a0599745 | 3907 | #include "libguile/eval.x" |
25eaf21a MD |
3908 | |
3909 | scm_add_feature ("delay"); | |
0f2d19dd | 3910 | } |
0f2d19dd | 3911 | |
6dbd0af5 | 3912 | #endif /* !DEVAL */ |
89e00824 ML |
3913 | |
3914 | /* | |
3915 | Local Variables: | |
3916 | c-file-style: "gnu" | |
3917 | End: | |
3918 | */ |