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d9c393f5 | 1 | /* Copyright (C) 1995,1996,1997,1998, 1999 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 JB |
61 | /* We need this to get the definitions for HAVE_ALLOCA_H, etc. */ |
62 | #include "scmconfig.h" | |
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 JB |
81 | #include <stdio.h> |
82 | #include "_scm.h" | |
20e6290e | 83 | #include "debug.h" |
20e6290e | 84 | #include "alist.h" |
20e6290e JB |
85 | #include "eq.h" |
86 | #include "continuations.h" | |
87 | #include "throw.h" | |
88 | #include "smob.h" | |
6cb702da | 89 | #include "macros.h" |
20e6290e JB |
90 | #include "procprop.h" |
91 | #include "hashtab.h" | |
ac46ab16 | 92 | #include "hash.h" |
20e6290e JB |
93 | #include "srcprop.h" |
94 | #include "stackchk.h" | |
0c32d76c MD |
95 | #include "objects.h" |
96 | #include "feature.h" | |
185905af | 97 | #include "modules.h" |
20e6290e | 98 | |
1bbd0b84 | 99 | #include "scm_validate.h" |
20e6290e | 100 | #include "eval.h" |
89efbff4 | 101 | |
61364ba6 MD |
102 | SCM (*scm_memoize_method) (SCM, SCM); |
103 | ||
0f2d19dd JB |
104 | \f |
105 | ||
6dbd0af5 MD |
106 | /* The evaluator contains a plethora of EVAL symbols. |
107 | * This is an attempt at explanation. | |
108 | * | |
109 | * The following macros should be used in code which is read twice | |
110 | * (where the choice of evaluator is hard soldered): | |
111 | * | |
112 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
113 | * Originally, it is defined to scm_ceval, but is redefined to | |
114 | * scm_deval during the second pass. | |
115 | * | |
116 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
117 | * only side effects of expressions matter. All immediates are | |
118 | * ignored. | |
119 | * | |
6cb702da | 120 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
121 | * immediate. (This macro never calls an evaluator.) |
122 | * | |
123 | * EVALCAR evaluates the car of an expression. | |
124 | * | |
125 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
126 | * car is a lisp cell. | |
127 | * | |
128 | * The following macros should be used in code which is read once | |
129 | * (where the choice of evaluator is dynamic): | |
130 | * | |
6cb702da | 131 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
132 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
133 | * mode. | |
134 | * | |
6cb702da | 135 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
136 | * depending on the debugging mode. |
137 | * | |
138 | * The main motivation for keeping this plethora is efficiency | |
139 | * together with maintainability (=> locality of code). | |
140 | */ | |
141 | ||
6cb702da | 142 | #define SCM_CEVAL scm_ceval |
7d2b68a8 | 143 | #define SIDEVAL(x, env) if (SCM_NIMP (x)) SCM_CEVAL((x), (env)) |
6cb702da | 144 | |
7d2b68a8 MD |
145 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR (x)) \ |
146 | ? *scm_lookupcar (x, env, 1) \ | |
147 | : SCM_CEVAL (SCM_CAR (x), env)) | |
0f2d19dd | 148 | |
7d2b68a8 MD |
149 | #define EVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \ |
150 | ? (SCM_IMP (SCM_CAR (x)) \ | |
151 | ? SCM_EVALIM (SCM_CAR (x), env) \ | |
152 | : SCM_GLOC_VAL (SCM_CAR (x))) \ | |
153 | : EVALCELLCAR (x, env)) | |
0f2d19dd | 154 | |
e2806c10 | 155 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
156 | |
157 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 158 | |
0f2d19dd | 159 | SCM * |
6e8d25a6 | 160 | scm_ilookup (SCM iloc, SCM env) |
0f2d19dd JB |
161 | { |
162 | register int ir = SCM_IFRAME (iloc); | |
163 | register SCM er = env; | |
164 | for (; 0 != ir; --ir) | |
165 | er = SCM_CDR (er); | |
166 | er = SCM_CAR (er); | |
167 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
168 | er = SCM_CDR (er); | |
169 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
170 | return SCM_CDRLOC (er); |
171 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
172 | } |
173 | #endif | |
174 | ||
f8769b1d MV |
175 | #ifdef USE_THREADS |
176 | ||
177 | /* The Lookup Car Race | |
178 | - by Eva Luator | |
179 | ||
180 | Memoization of variables and special forms is done while executing | |
181 | the code for the first time. As long as there is only one thread | |
182 | everything is fine, but as soon as two threads execute the same | |
183 | code concurrently `for the first time' they can come into conflict. | |
184 | ||
185 | This memoization includes rewriting variable references into more | |
186 | efficient forms and expanding macros. Furthermore, macro expansion | |
187 | includes `compiling' special forms like `let', `cond', etc. into | |
188 | tree-code instructions. | |
189 | ||
190 | There shouldn't normally be a problem with memoizing local and | |
191 | global variable references (into ilocs and glocs), because all | |
192 | threads will mutate the code in *exactly* the same way and (if I | |
193 | read the C code correctly) it is not possible to observe a half-way | |
194 | mutated cons cell. The lookup procedure can handle this | |
195 | transparently without any critical sections. | |
196 | ||
197 | It is different with macro expansion, because macro expansion | |
198 | happens outside of the lookup procedure and can't be | |
199 | undone. Therefore it can't cope with it. It has to indicate | |
200 | failure when it detects a lost race and hope that the caller can | |
201 | handle it. Luckily, it turns out that this is the case. | |
202 | ||
203 | An example to illustrate this: Suppose that the follwing form will | |
204 | be memoized concurrently by two threads | |
205 | ||
206 | (let ((x 12)) x) | |
207 | ||
208 | Let's first examine the lookup of X in the body. The first thread | |
209 | decides that it has to find the symbol "x" in the environment and | |
210 | starts to scan it. Then the other thread takes over and actually | |
211 | overtakes the first. It looks up "x" and substitutes an | |
212 | appropriate iloc for it. Now the first thread continues and | |
213 | completes its lookup. It comes to exactly the same conclusions as | |
214 | the second one and could - without much ado - just overwrite the | |
215 | iloc with the same iloc. | |
216 | ||
217 | But let's see what will happen when the race occurs while looking | |
218 | up the symbol "let" at the start of the form. It could happen that | |
219 | the second thread interrupts the lookup of the first thread and not | |
220 | only substitutes a gloc for it but goes right ahead and replaces it | |
221 | with the compiled form (#@let* (x 12) x). Now, when the first | |
222 | thread completes its lookup, it would replace the #@let* with a | |
223 | gloc pointing to the "let" binding, effectively reverting the form | |
224 | to (let (x 12) x). This is wrong. It has to detect that it has | |
225 | lost the race and the evaluator has to reconsider the changed form | |
226 | completely. | |
227 | ||
228 | This race condition could be resolved with some kind of traffic | |
229 | light (like mutexes) around scm_lookupcar, but I think that it is | |
230 | best to avoid them in this case. They would serialize memoization | |
231 | completely and because lookup involves calling arbitrary Scheme | |
232 | code (via the lookup-thunk), threads could be blocked for an | |
233 | arbitrary amount of time or even deadlock. But with the current | |
234 | solution a lot of unnecessary work is potentially done. */ | |
235 | ||
236 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
237 | return NULL to indicate a failed lookup due to some race conditions | |
238 | between threads. This only happens when VLOC is the first cell of | |
239 | a special form that will eventually be memoized (like `let', etc.) | |
240 | In that case the whole lookup is bogus and the caller has to | |
241 | reconsider the complete special form. | |
242 | ||
243 | SCM_LOOKUPCAR is still there, of course. It just calls | |
244 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
245 | should only be called when it is known that VLOC is not the first | |
246 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
26d5b9b4 MD |
247 | for NULL. I think I've found the only places where this |
248 | applies. */ | |
f8769b1d MV |
249 | |
250 | #endif /* USE_THREADS */ | |
1cc91f1b | 251 | |
26d5b9b4 MD |
252 | /* scm_lookupcar returns a pointer to this when a variable could not |
253 | be found and it should not throw an error. Never assign to this. | |
254 | */ | |
255 | static scm_cell undef_cell = { SCM_UNDEFINED, SCM_UNDEFINED }; | |
256 | ||
f25f761d GH |
257 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
258 | ||
d0b7bad7 | 259 | #ifdef USE_THREADS |
8ecf1f13 | 260 | static SCM * |
26d5b9b4 | 261 | scm_lookupcar1 (SCM vloc, SCM genv, int check) |
d0b7bad7 MD |
262 | #else |
263 | SCM * | |
26d5b9b4 | 264 | scm_lookupcar (SCM vloc, SCM genv, int check) |
d0b7bad7 | 265 | #endif |
0f2d19dd JB |
266 | { |
267 | SCM env = genv; | |
e3173f93 JB |
268 | register SCM *al, fl, var = SCM_CAR (vloc); |
269 | #ifdef USE_THREADS | |
270 | register SCM var2 = var; | |
271 | #endif | |
0f2d19dd JB |
272 | #ifdef MEMOIZE_LOCALS |
273 | register SCM iloc = SCM_ILOC00; | |
274 | #endif | |
275 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
276 | { | |
277 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
278 | break; | |
a23afe53 | 279 | al = SCM_CARLOC (env); |
0f2d19dd JB |
280 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
281 | { | |
282 | if (SCM_NCONSP (fl)) | |
33b97402 | 283 | { |
0f2d19dd JB |
284 | if (fl == var) |
285 | { | |
286 | #ifdef MEMOIZE_LOCALS | |
f8769b1d MV |
287 | #ifdef USE_THREADS |
288 | if (SCM_CAR (vloc) != var) | |
289 | goto race; | |
290 | #endif | |
a23afe53 | 291 | SCM_SETCAR (vloc, iloc + SCM_ICDR); |
0f2d19dd | 292 | #endif |
a23afe53 | 293 | return SCM_CDRLOC (*al); |
0f2d19dd | 294 | } |
33b97402 MD |
295 | else |
296 | break; | |
297 | } | |
a23afe53 | 298 | al = SCM_CDRLOC (*al); |
0f2d19dd JB |
299 | if (SCM_CAR (fl) == var) |
300 | { | |
301 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 302 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
303 | if (SCM_UNBNDP (SCM_CAR (*al))) |
304 | { | |
305 | env = SCM_EOL; | |
306 | goto errout; | |
307 | } | |
f8769b1d MV |
308 | #endif |
309 | #ifdef USE_THREADS | |
310 | if (SCM_CAR (vloc) != var) | |
311 | goto race; | |
0f2d19dd | 312 | #endif |
a23afe53 | 313 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 314 | #endif |
a23afe53 | 315 | return SCM_CARLOC (*al); |
0f2d19dd JB |
316 | } |
317 | #ifdef MEMOIZE_LOCALS | |
318 | iloc += SCM_IDINC; | |
319 | #endif | |
320 | } | |
321 | #ifdef MEMOIZE_LOCALS | |
322 | iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC); | |
323 | #endif | |
324 | } | |
325 | { | |
326 | SCM top_thunk, vcell; | |
327 | if (SCM_NIMP(env)) | |
328 | { | |
329 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
330 | env = SCM_CDR (env); | |
331 | } | |
332 | else | |
333 | top_thunk = SCM_BOOL_F; | |
334 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
335 | if (vcell == SCM_BOOL_F) | |
336 | goto errout; | |
337 | else | |
338 | var = vcell; | |
339 | } | |
cf7c17e9 | 340 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
341 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
342 | { | |
343 | var = SCM_CAR (var); | |
344 | errout: | |
f5bf2977 | 345 | /* scm_everr (vloc, genv,...) */ |
26d5b9b4 | 346 | if (check) |
f25f761d GH |
347 | { |
348 | if (SCM_NULLP (env)) | |
70d63753 | 349 | scm_error (scm_unbound_variable_key, NULL, "Unbound variable: ~S", |
f25f761d GH |
350 | scm_cons (var, SCM_EOL), SCM_BOOL_F); |
351 | else | |
70d63753 | 352 | scm_misc_error (NULL, "Damaged environment: ~S", |
f25f761d GH |
353 | scm_cons (var, SCM_EOL)); |
354 | } | |
26d5b9b4 MD |
355 | else |
356 | return SCM_CDRLOC (&undef_cell); | |
0f2d19dd JB |
357 | } |
358 | #endif | |
f8769b1d MV |
359 | #ifdef USE_THREADS |
360 | if (SCM_CAR (vloc) != var2) | |
361 | { | |
362 | /* Some other thread has changed the very cell we are working | |
363 | on. In effect, it must have done our job or messed it up | |
364 | completely. */ | |
365 | race: | |
366 | var = SCM_CAR (vloc); | |
367 | if ((var & 7) == 1) | |
368 | return SCM_GLOC_VAL_LOC (var); | |
369 | #ifdef MEMOIZE_LOCALS | |
370 | if ((var & 127) == (127 & SCM_ILOC00)) | |
371 | return scm_ilookup (var, genv); | |
372 | #endif | |
373 | /* We can't cope with anything else than glocs and ilocs. When | |
374 | a special form has been memoized (i.e. `let' into `#@let') we | |
375 | return NULL and expect the calling function to do the right | |
376 | thing. For the evaluator, this means going back and redoing | |
377 | the dispatch on the car of the form. */ | |
378 | return NULL; | |
379 | } | |
380 | #endif /* USE_THREADS */ | |
381 | ||
a23afe53 | 382 | SCM_SETCAR (vloc, var + 1); |
0f2d19dd | 383 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 384 | * but syntax or something.... */ |
a23afe53 | 385 | return SCM_CDRLOC (var); |
0f2d19dd JB |
386 | } |
387 | ||
f8769b1d MV |
388 | #ifdef USE_THREADS |
389 | SCM * | |
6e8d25a6 | 390 | scm_lookupcar (SCM vloc, SCM genv, int check) |
f8769b1d | 391 | { |
26d5b9b4 | 392 | SCM *loc = scm_lookupcar1 (vloc, genv, check); |
f8769b1d MV |
393 | if (loc == NULL) |
394 | abort (); | |
395 | return loc; | |
396 | } | |
f8769b1d MV |
397 | #endif |
398 | ||
0f2d19dd | 399 | #define unmemocar scm_unmemocar |
1cc91f1b | 400 | |
0f2d19dd | 401 | SCM |
6e8d25a6 | 402 | scm_unmemocar (SCM form, SCM env) |
0f2d19dd | 403 | { |
6dbd0af5 | 404 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 405 | register int ir; |
6dbd0af5 | 406 | #endif |
0f2d19dd JB |
407 | SCM c; |
408 | ||
409 | if (SCM_IMP (form)) | |
410 | return form; | |
411 | c = SCM_CAR (form); | |
412 | if (1 == (c & 7)) | |
a23afe53 | 413 | SCM_SETCAR (form, SCM_CAR (c - 1)); |
0f2d19dd | 414 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 415 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
416 | else if (SCM_ILOCP (c)) |
417 | { | |
418 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
419 | env = SCM_CDR (env); | |
420 | env = SCM_CAR (SCM_CAR (env)); | |
421 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
422 | env = SCM_CDR (env); | |
a23afe53 | 423 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 424 | } |
6dbd0af5 | 425 | #endif |
0f2d19dd JB |
426 | #endif |
427 | return form; | |
428 | } | |
429 | ||
1cc91f1b | 430 | |
0f2d19dd | 431 | SCM |
6e8d25a6 | 432 | scm_eval_car (SCM pair, SCM env) |
0f2d19dd | 433 | { |
6cb702da | 434 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
435 | } |
436 | ||
437 | \f | |
438 | /* | |
439 | * The following rewrite expressions and | |
440 | * some memoized forms have different syntax | |
441 | */ | |
442 | ||
3eeba8d4 JB |
443 | const char scm_s_expression[] = "missing or extra expression"; |
444 | const char scm_s_test[] = "bad test"; | |
445 | const char scm_s_body[] = "bad body"; | |
446 | const char scm_s_bindings[] = "bad bindings"; | |
447 | const char scm_s_variable[] = "bad variable"; | |
448 | const char scm_s_clauses[] = "bad or missing clauses"; | |
449 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 450 | |
81123e6d MD |
451 | SCM scm_sym_dot, scm_sym_arrow, scm_sym_else; |
452 | SCM scm_sym_unquote, scm_sym_uq_splicing, scm_sym_apply; | |
453 | ||
454 | SCM scm_f_apply; | |
b8229a3b | 455 | |
6dbd0af5 | 456 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
457 | SCM scm_sym_enter_frame, scm_sym_apply_frame, scm_sym_exit_frame; |
458 | SCM scm_sym_trace; | |
6dbd0af5 | 459 | #endif |
0f2d19dd JB |
460 | |
461 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
462 | ||
463 | ||
1cc91f1b | 464 | |
e4755e5c | 465 | static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, const char *what)); |
1cc91f1b | 466 | |
0f2d19dd | 467 | static void |
6e8d25a6 | 468 | bodycheck (SCM xorig, SCM *bodyloc, const char *what) |
0f2d19dd | 469 | { |
6cb702da | 470 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, scm_s_expression); |
0f2d19dd JB |
471 | } |
472 | ||
26d5b9b4 MD |
473 | /* Check that the body denoted by XORIG is valid and rewrite it into |
474 | its internal form. The internal form of a body is just the body | |
475 | itself, but prefixed with an ISYM that denotes to what kind of | |
476 | outer construct this body belongs. A lambda body starts with | |
477 | SCM_IM_LAMBDA, for example, a body of a let starts with SCM_IM_LET, | |
478 | etc. The one exception is a body that belongs to a letrec that has | |
479 | been formed by rewriting internal defines: it starts with | |
480 | SCM_IM_DEFINE. */ | |
481 | ||
482 | /* XXX - Besides controlling the rewriting of internal defines, the | |
483 | additional ISYM could be used for improved error messages. | |
484 | This is not done yet. */ | |
485 | ||
486 | static SCM | |
6e8d25a6 | 487 | scm_m_body (SCM op, SCM xorig, const char *what) |
26d5b9b4 MD |
488 | { |
489 | ASRTSYNTAX (scm_ilength (xorig) >= 1, scm_s_expression); | |
490 | ||
491 | /* Don't add another ISYM if one is present already. */ | |
492 | if (SCM_ISYMP (SCM_CAR (xorig))) | |
493 | return xorig; | |
494 | ||
495 | /* Retain possible doc string. */ | |
496 | if (SCM_IMP (SCM_CAR(xorig)) || SCM_NCONSP (SCM_CAR (xorig))) | |
497 | { | |
498 | if (SCM_NNULLP (SCM_CDR(xorig))) | |
499 | return scm_cons (SCM_CAR (xorig), | |
500 | scm_m_body (op, SCM_CDR(xorig), what)); | |
501 | return xorig; | |
502 | } | |
503 | ||
504 | return scm_cons2 (op, SCM_CAR (xorig), SCM_CDR(xorig)); | |
505 | } | |
506 | ||
b8229a3b | 507 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
2f0d1375 | 508 | SCM_GLOBAL_SYMBOL(scm_sym_quote, s_quote); |
1cc91f1b | 509 | |
0f2d19dd | 510 | SCM |
6e8d25a6 | 511 | scm_m_quote (SCM xorig, SCM env) |
0f2d19dd | 512 | { |
26d5b9b4 MD |
513 | SCM x = scm_copy_tree (SCM_CDR (xorig)); |
514 | ||
6cb702da | 515 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 516 | xorig, scm_s_expression, s_quote); |
3a3111a8 | 517 | return scm_cons (SCM_IM_QUOTE, x); |
0f2d19dd JB |
518 | } |
519 | ||
520 | ||
1cc91f1b | 521 | |
b8229a3b | 522 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
2f0d1375 | 523 | SCM_GLOBAL_SYMBOL(scm_sym_begin, s_begin); |
b8229a3b | 524 | |
0f2d19dd | 525 | SCM |
6e8d25a6 | 526 | scm_m_begin (SCM xorig, SCM env) |
0f2d19dd | 527 | { |
6cb702da | 528 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 529 | xorig, scm_s_expression, s_begin); |
3a3111a8 | 530 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
0f2d19dd JB |
531 | } |
532 | ||
b8229a3b | 533 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
2f0d1375 | 534 | SCM_GLOBAL_SYMBOL(scm_sym_if, s_if); |
1cc91f1b | 535 | |
0f2d19dd | 536 | SCM |
6e8d25a6 | 537 | scm_m_if (SCM xorig, SCM env) |
0f2d19dd JB |
538 | { |
539 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 540 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
3a3111a8 | 541 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
0f2d19dd JB |
542 | } |
543 | ||
544 | ||
89efbff4 MD |
545 | /* Will go into the RnRS module when Guile is factorized. |
546 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
547 | const char scm_s_set_x[] = "set!"; | |
548 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 549 | |
0f2d19dd | 550 | SCM |
6e8d25a6 | 551 | scm_m_set_x (SCM xorig, SCM env) |
0f2d19dd | 552 | { |
6dbd0af5 | 553 | SCM x = SCM_CDR (xorig); |
89efbff4 | 554 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
cabe682c | 555 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 | 556 | xorig, scm_s_variable, scm_s_set_x); |
3a3111a8 | 557 | return scm_cons (SCM_IM_SET_X, x); |
0f2d19dd JB |
558 | } |
559 | ||
560 | ||
561 | #if 0 | |
1cc91f1b | 562 | |
0f2d19dd | 563 | SCM |
6e8d25a6 | 564 | scm_m_vref (SCM xorig, SCM env) |
0f2d19dd JB |
565 | { |
566 | SCM x = SCM_CDR (xorig); | |
6cb702da | 567 | SCM_ASSYNT (1 == scm_ilength (x), xorig, scm_s_expression, s_vref); |
0f2d19dd JB |
568 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) |
569 | { | |
f5bf2977 | 570 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 | 571 | scm_misc_error (NULL, |
70d63753 | 572 | "Bad variable: ~S", |
523f5266 | 573 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); |
0f2d19dd | 574 | } |
6cb702da MD |
575 | SCM_ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), |
576 | xorig, scm_s_variable, s_vref); | |
0f2d19dd JB |
577 | return scm_cons (IM_VREF, x); |
578 | } | |
579 | ||
580 | ||
1cc91f1b | 581 | |
0f2d19dd | 582 | SCM |
6e8d25a6 | 583 | scm_m_vset (SCM xorig, SCM env) |
0f2d19dd JB |
584 | { |
585 | SCM x = SCM_CDR (xorig); | |
6cb702da MD |
586 | SCM_ASSYNT (3 == scm_ilength (x), xorig, scm_s_expression, s_vset); |
587 | SCM_ASSYNT ((DEFSCM_VARIABLEP (SCM_CAR (x)) | |
588 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
589 | xorig, scm_s_variable, s_vset); | |
0f2d19dd JB |
590 | return scm_cons (IM_VSET, x); |
591 | } | |
592 | #endif | |
593 | ||
594 | ||
b8229a3b | 595 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
2f0d1375 | 596 | SCM_GLOBAL_SYMBOL(scm_sym_and, s_and); |
1cc91f1b | 597 | |
0f2d19dd | 598 | SCM |
6e8d25a6 | 599 | scm_m_and (SCM xorig, SCM env) |
0f2d19dd JB |
600 | { |
601 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 602 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd | 603 | if (len >= 1) |
3a3111a8 | 604 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); |
0f2d19dd JB |
605 | else |
606 | return SCM_BOOL_T; | |
607 | } | |
608 | ||
b8229a3b | 609 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
2f0d1375 | 610 | SCM_GLOBAL_SYMBOL(scm_sym_or,s_or); |
1cc91f1b | 611 | |
0f2d19dd | 612 | SCM |
6e8d25a6 | 613 | scm_m_or (SCM xorig, SCM env) |
0f2d19dd JB |
614 | { |
615 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 616 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd | 617 | if (len >= 1) |
3a3111a8 | 618 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); |
0f2d19dd JB |
619 | else |
620 | return SCM_BOOL_F; | |
621 | } | |
622 | ||
623 | ||
b8229a3b | 624 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
2f0d1375 | 625 | SCM_GLOBAL_SYMBOL(scm_sym_case, s_case); |
1cc91f1b | 626 | |
0f2d19dd | 627 | SCM |
6e8d25a6 | 628 | scm_m_case (SCM xorig, SCM env) |
0f2d19dd | 629 | { |
26d5b9b4 | 630 | SCM proc, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
b8229a3b | 631 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
632 | while (SCM_NIMP (x = SCM_CDR (x))) |
633 | { | |
634 | proc = SCM_CAR (x); | |
b8229a3b | 635 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da | 636 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
2f0d1375 | 637 | || scm_sym_else == SCM_CAR (proc), |
b8229a3b | 638 | xorig, scm_s_clauses, s_case); |
0f2d19dd | 639 | } |
3a3111a8 | 640 | return scm_cons (SCM_IM_CASE, cdrx); |
0f2d19dd JB |
641 | } |
642 | ||
643 | ||
b8229a3b | 644 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
2f0d1375 | 645 | SCM_GLOBAL_SYMBOL(scm_sym_cond, s_cond); |
b8229a3b | 646 | |
1cc91f1b | 647 | |
0f2d19dd | 648 | SCM |
6e8d25a6 | 649 | scm_m_cond (SCM xorig, SCM env) |
0f2d19dd | 650 | { |
26d5b9b4 | 651 | SCM arg1, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
0f2d19dd | 652 | int len = scm_ilength (x); |
b8229a3b | 653 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
654 | while (SCM_NIMP (x)) |
655 | { | |
656 | arg1 = SCM_CAR (x); | |
657 | len = scm_ilength (arg1); | |
b8229a3b | 658 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
2f0d1375 | 659 | if (scm_sym_else == SCM_CAR (arg1)) |
0f2d19dd | 660 | { |
6cb702da | 661 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 662 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 663 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd | 664 | } |
2f0d1375 | 665 | if (len >= 2 && scm_sym_arrow == SCM_CAR (SCM_CDR (arg1))) |
6cb702da | 666 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 667 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
668 | x = SCM_CDR (x); |
669 | } | |
3a3111a8 | 670 | return scm_cons (SCM_IM_COND, cdrx); |
0f2d19dd JB |
671 | } |
672 | ||
b8229a3b | 673 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
2f0d1375 | 674 | SCM_GLOBAL_SYMBOL(scm_sym_lambda, s_lambda); |
1cc91f1b | 675 | |
0f2d19dd | 676 | SCM |
6e8d25a6 | 677 | scm_m_lambda (SCM xorig, SCM env) |
0f2d19dd JB |
678 | { |
679 | SCM proc, x = SCM_CDR (xorig); | |
26d5b9b4 | 680 | if (scm_ilength (x) < 2) |
0f2d19dd JB |
681 | goto badforms; |
682 | proc = SCM_CAR (x); | |
33b97402 MD |
683 | if (SCM_NULLP (proc)) |
684 | goto memlambda; | |
26d5b9b4 MD |
685 | if (SCM_IM_LET == proc) /* named let */ |
686 | goto memlambda; | |
33b97402 MD |
687 | if (SCM_IMP (proc)) |
688 | goto badforms; | |
689 | if (SCM_SYMBOLP (proc)) | |
690 | goto memlambda; | |
691 | if (SCM_NCONSP (proc)) | |
692 | goto badforms; | |
693 | while (SCM_NIMP (proc)) | |
0f2d19dd | 694 | { |
33b97402 MD |
695 | if (SCM_NCONSP (proc)) |
696 | { | |
0f2d19dd | 697 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
698 | goto badforms; |
699 | else | |
700 | goto memlambda; | |
701 | } | |
0c95b57d | 702 | if (!SCM_SYMBOLP (SCM_CAR (proc))) |
0f2d19dd JB |
703 | goto badforms; |
704 | proc = SCM_CDR (proc); | |
705 | } | |
ff467021 | 706 | if (SCM_NNULLP (proc)) |
26d5b9b4 MD |
707 | { |
708 | badforms: | |
709 | scm_wta (xorig, scm_s_formals, s_lambda); | |
710 | } | |
711 | ||
712 | memlambda: | |
3a3111a8 MD |
713 | return scm_cons2 (SCM_IM_LAMBDA, SCM_CAR (x), |
714 | scm_m_body (SCM_IM_LAMBDA, SCM_CDR (x), s_lambda)); | |
0f2d19dd JB |
715 | } |
716 | ||
b8229a3b | 717 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
2f0d1375 | 718 | SCM_GLOBAL_SYMBOL(scm_sym_letstar,s_letstar); |
0f2d19dd | 719 | |
1cc91f1b | 720 | |
0f2d19dd | 721 | SCM |
6e8d25a6 | 722 | scm_m_letstar (SCM xorig, SCM env) |
0f2d19dd JB |
723 | { |
724 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
725 | int len = scm_ilength (x); | |
b8229a3b | 726 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 727 | proc = SCM_CAR (x); |
b8229a3b | 728 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
ff467021 | 729 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
730 | { |
731 | arg1 = SCM_CAR (proc); | |
b8229a3b | 732 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
0c95b57d | 733 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, s_letstar); |
0f2d19dd | 734 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 735 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
736 | proc = SCM_CDR (proc); |
737 | } | |
738 | x = scm_cons (vars, SCM_CDR (x)); | |
26d5b9b4 | 739 | |
3a3111a8 MD |
740 | return scm_cons2 (SCM_IM_LETSTAR, SCM_CAR (x), |
741 | scm_m_body (SCM_IM_LETSTAR, SCM_CDR (x), s_letstar)); | |
0f2d19dd JB |
742 | } |
743 | ||
744 | /* DO gets the most radically altered syntax | |
745 | (do ((<var1> <init1> <step1>) | |
746 | (<var2> <init2>) | |
747 | ... ) | |
748 | (<test> <return>) | |
749 | <body>) | |
750 | ;; becomes | |
751 | (do_mem (varn ... var2 var1) | |
752 | (<init1> <init2> ... <initn>) | |
753 | (<test> <return>) | |
754 | (<body>) | |
755 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
756 | */ | |
757 | ||
b8229a3b | 758 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
2f0d1375 | 759 | SCM_GLOBAL_SYMBOL(scm_sym_do, s_do); |
1cc91f1b | 760 | |
0f2d19dd | 761 | SCM |
6e8d25a6 | 762 | scm_m_do (SCM xorig, SCM env) |
0f2d19dd JB |
763 | { |
764 | SCM x = SCM_CDR (xorig), arg1, proc; | |
765 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
766 | SCM *initloc = &inits, *steploc = &steps; | |
767 | int len = scm_ilength (x); | |
6cb702da | 768 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 769 | proc = SCM_CAR (x); |
6cb702da | 770 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
ff467021 | 771 | while (SCM_NIMP(proc)) |
0f2d19dd JB |
772 | { |
773 | arg1 = SCM_CAR (proc); | |
774 | len = scm_ilength (arg1); | |
6cb702da | 775 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
0c95b57d | 776 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, "do"); |
0f2d19dd JB |
777 | /* vars reversed here, inits and steps reversed at evaluation */ |
778 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
779 | arg1 = SCM_CDR (arg1); | |
780 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 781 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
782 | arg1 = SCM_CDR (arg1); |
783 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 784 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
785 | proc = SCM_CDR (proc); |
786 | } | |
787 | x = SCM_CDR (x); | |
6cb702da | 788 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
789 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
790 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 791 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
3a3111a8 | 792 | return scm_cons (SCM_IM_DO, x); |
0f2d19dd JB |
793 | } |
794 | ||
6dbd0af5 MD |
795 | /* evalcar is small version of inline EVALCAR when we don't care about |
796 | * speed | |
797 | */ | |
798 | #define evalcar scm_eval_car | |
0f2d19dd | 799 | |
1cc91f1b | 800 | |
1bbd0b84 | 801 | static SCM iqq (SCM form, SCM env, int depth); |
1cc91f1b | 802 | |
b8229a3b | 803 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
2f0d1375 | 804 | SCM_GLOBAL_SYMBOL(scm_sym_quasiquote, s_quasiquote); |
b8229a3b MS |
805 | |
806 | SCM | |
6e8d25a6 | 807 | scm_m_quasiquote (SCM xorig, SCM env) |
b8229a3b MS |
808 | { |
809 | SCM x = SCM_CDR (xorig); | |
810 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
811 | return iqq (SCM_CAR (x), env, 1); | |
812 | } | |
813 | ||
814 | ||
0f2d19dd | 815 | static SCM |
1bbd0b84 | 816 | iqq (SCM form,SCM env,int depth) |
0f2d19dd JB |
817 | { |
818 | SCM tmp; | |
819 | int edepth = depth; | |
ff467021 JB |
820 | if (SCM_IMP(form)) |
821 | return form; | |
0f2d19dd JB |
822 | if (SCM_VECTORP (form)) |
823 | { | |
824 | long i = SCM_LENGTH (form); | |
825 | SCM *data = SCM_VELTS (form); | |
826 | tmp = SCM_EOL; | |
827 | for (; --i >= 0;) | |
828 | tmp = scm_cons (data[i], tmp); | |
829 | return scm_vector (iqq (tmp, env, depth)); | |
830 | } | |
ff467021 JB |
831 | if (SCM_NCONSP(form)) |
832 | return form; | |
0f2d19dd | 833 | tmp = SCM_CAR (form); |
2f0d1375 | 834 | if (scm_sym_quasiquote == tmp) |
0f2d19dd JB |
835 | { |
836 | depth++; | |
837 | goto label; | |
838 | } | |
2f0d1375 | 839 | if (scm_sym_unquote == tmp) |
0f2d19dd JB |
840 | { |
841 | --depth; | |
842 | label: | |
843 | form = SCM_CDR (form); | |
0c95b57d GB |
844 | SCM_ASSERT (SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
845 | form, SCM_ARG1, s_quasiquote); | |
0f2d19dd JB |
846 | if (0 == depth) |
847 | return evalcar (form, env); | |
848 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
849 | } | |
2f0d1375 | 850 | if (SCM_NIMP (tmp) && (scm_sym_uq_splicing == SCM_CAR (tmp))) |
0f2d19dd JB |
851 | { |
852 | tmp = SCM_CDR (tmp); | |
853 | if (0 == --edepth) | |
854 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
855 | } | |
856 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
857 | } | |
858 | ||
859 | /* Here are acros which return values rather than code. */ | |
860 | ||
a570e93a MD |
861 | SCM_SYNTAX (s_delay, "delay", scm_makmmacro, scm_m_delay); |
862 | SCM_GLOBAL_SYMBOL (scm_sym_delay, s_delay); | |
1cc91f1b | 863 | |
0f2d19dd | 864 | SCM |
6e8d25a6 | 865 | scm_m_delay (SCM xorig, SCM env) |
0f2d19dd | 866 | { |
6cb702da | 867 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
a570e93a | 868 | return scm_cons2 (SCM_IM_DELAY, SCM_EOL, SCM_CDR (xorig)); |
0f2d19dd JB |
869 | } |
870 | ||
1cc91f1b | 871 | |
b8229a3b | 872 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
2f0d1375 | 873 | SCM_GLOBAL_SYMBOL(scm_sym_define, s_define); |
1cc91f1b | 874 | |
0f2d19dd | 875 | SCM |
6e8d25a6 | 876 | scm_m_define (SCM x, SCM env) |
0f2d19dd JB |
877 | { |
878 | SCM proc, arg1 = x; | |
879 | x = SCM_CDR (x); | |
6cb702da | 880 | /* SCM_ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ |
b8229a3b | 881 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
882 | proc = SCM_CAR (x); |
883 | x = SCM_CDR (x); | |
0c95b57d | 884 | while (SCM_CONSP (proc)) |
0f2d19dd | 885 | { /* nested define syntax */ |
2f0d1375 | 886 | x = scm_cons (scm_cons2 (scm_sym_lambda, SCM_CDR (proc), x), SCM_EOL); |
0f2d19dd JB |
887 | proc = SCM_CAR (proc); |
888 | } | |
0c95b57d | 889 | SCM_ASSYNT (SCM_SYMBOLP (proc), |
b8229a3b MS |
890 | arg1, scm_s_variable, s_define); |
891 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
892 | if (SCM_TOP_LEVEL (env)) |
893 | { | |
894 | x = evalcar (x, env); | |
6dbd0af5 | 895 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
896 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
897 | { | |
898 | arg1 = x; | |
899 | proc: | |
900 | if (SCM_CLOSUREP (arg1) | |
901 | /* Only the first definition determines the name. */ | |
2f0d1375 MD |
902 | && scm_procedure_property (arg1, scm_sym_name) == SCM_BOOL_F) |
903 | scm_set_procedure_property_x (arg1, scm_sym_name, proc); | |
80ea260c MD |
904 | else if (SCM_TYP16 (arg1) == scm_tc16_macro |
905 | && SCM_CDR (arg1) != arg1) | |
906 | { | |
907 | arg1 = SCM_CDR (arg1); | |
908 | goto proc; | |
909 | } | |
910 | } | |
6dbd0af5 | 911 | #endif |
6cb702da | 912 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
0f2d19dd | 913 | #if 0 |
cf7c17e9 | 914 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
915 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) |
916 | && (SCM_CDR (arg1) != x)) | |
917 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
918 | else | |
919 | #endif | |
920 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
921 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 922 | #endif |
a23afe53 | 923 | SCM_SETCDR (arg1, x); |
0f2d19dd | 924 | #ifdef SICP |
2f0d1375 | 925 | return scm_cons2 (scm_sym_quote, SCM_CAR (arg1), SCM_EOL); |
0f2d19dd JB |
926 | #else |
927 | return SCM_UNSPECIFIED; | |
928 | #endif | |
929 | } | |
930 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
931 | } | |
6dbd0af5 | 932 | |
0f2d19dd JB |
933 | /* end of acros */ |
934 | ||
26d5b9b4 | 935 | static SCM |
6e8d25a6 | 936 | scm_m_letrec1 (SCM op, SCM imm, SCM xorig, SCM env) |
0f2d19dd JB |
937 | { |
938 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
939 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
940 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
941 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
942 | ||
0f2d19dd | 943 | proc = SCM_CAR (x); |
6cb702da | 944 | ASRTSYNTAX (scm_ilength (proc) >= 1, scm_s_bindings); |
0f2d19dd JB |
945 | do |
946 | { | |
947 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
948 | arg1 = SCM_CAR (proc); | |
6cb702da | 949 | ASRTSYNTAX (2 == scm_ilength (arg1), scm_s_bindings); |
0c95b57d | 950 | ASRTSYNTAX (SCM_SYMBOLP (SCM_CAR (arg1)), |
26d5b9b4 | 951 | scm_s_variable); |
0f2d19dd JB |
952 | vars = scm_cons (SCM_CAR (arg1), vars); |
953 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 954 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd | 955 | } |
ff467021 | 956 | while (SCM_NIMP (proc = SCM_CDR (proc))); |
26d5b9b4 | 957 | |
3a3111a8 MD |
958 | return scm_cons2 (op, vars, |
959 | scm_cons (inits, scm_m_body (imm, SCM_CDR (x), what))); | |
0f2d19dd JB |
960 | } |
961 | ||
26d5b9b4 | 962 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
2f0d1375 | 963 | SCM_GLOBAL_SYMBOL(scm_sym_letrec, s_letrec); |
26d5b9b4 MD |
964 | |
965 | SCM | |
6e8d25a6 | 966 | scm_m_letrec (SCM xorig, SCM env) |
26d5b9b4 MD |
967 | { |
968 | SCM x = SCM_CDR (xorig); | |
969 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_letrec); | |
970 | ||
971 | if (SCM_NULLP (SCM_CAR (x))) /* null binding, let* faster */ | |
3a3111a8 MD |
972 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), SCM_EOL, |
973 | scm_m_body (SCM_IM_LETREC, | |
974 | SCM_CDR (x), | |
975 | s_letrec)), | |
26d5b9b4 MD |
976 | env); |
977 | else | |
978 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LETREC, xorig, env); | |
979 | } | |
1cc91f1b | 980 | |
b8229a3b | 981 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
2f0d1375 | 982 | SCM_GLOBAL_SYMBOL(scm_sym_let, s_let); |
b8229a3b | 983 | |
0f2d19dd | 984 | SCM |
6e8d25a6 | 985 | scm_m_let (SCM xorig, SCM env) |
0f2d19dd JB |
986 | { |
987 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
988 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
989 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
990 | ||
b8229a3b | 991 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
992 | proc = SCM_CAR (x); |
993 | if (SCM_NULLP (proc) | |
0c95b57d | 994 | || (SCM_CONSP (proc) |
26d5b9b4 MD |
995 | && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) |
996 | { | |
997 | /* null or single binding, let* is faster */ | |
3a3111a8 MD |
998 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), proc, |
999 | scm_m_body (SCM_IM_LET, | |
1000 | SCM_CDR (x), | |
1001 | s_let)), | |
26d5b9b4 MD |
1002 | env); |
1003 | } | |
1004 | ||
b8229a3b | 1005 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
26d5b9b4 MD |
1006 | if (SCM_CONSP (proc)) |
1007 | { | |
1008 | /* plain let, proc is <bindings> */ | |
1009 | return scm_m_letrec1 (SCM_IM_LET, SCM_IM_LET, xorig, env); | |
1010 | } | |
1011 | ||
0f2d19dd | 1012 | if (!SCM_SYMBOLP (proc)) |
b8229a3b | 1013 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
1014 | name = proc; /* named let, build equiv letrec */ |
1015 | x = SCM_CDR (x); | |
b8229a3b | 1016 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
26d5b9b4 | 1017 | proc = SCM_CAR (x); /* bindings list */ |
b8229a3b | 1018 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
ff467021 | 1019 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
1020 | { /* vars and inits both in order */ |
1021 | arg1 = SCM_CAR (proc); | |
b8229a3b | 1022 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
0c95b57d | 1023 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 1024 | xorig, scm_s_variable, s_let); |
0f2d19dd | 1025 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 1026 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 1027 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 1028 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
1029 | proc = SCM_CDR (proc); |
1030 | } | |
26d5b9b4 | 1031 | |
2f0d1375 | 1032 | proc = scm_cons2 (scm_sym_lambda, vars, |
26d5b9b4 | 1033 | scm_m_body (SCM_IM_LET, SCM_CDR (x), "let")); |
2f0d1375 | 1034 | proc = scm_cons2 (scm_sym_let, scm_cons (scm_cons2 (name, proc, SCM_EOL), |
26d5b9b4 MD |
1035 | SCM_EOL), |
1036 | scm_acons (name, inits, SCM_EOL)); | |
1037 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LET, proc, env); | |
0f2d19dd JB |
1038 | } |
1039 | ||
1040 | ||
81123e6d MD |
1041 | SCM_SYNTAX (s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
1042 | SCM_GLOBAL_SYMBOL (scm_sym_atapply, s_atapply); | |
1043 | SCM_GLOBAL_SYMBOL (scm_sym_apply, s_atapply + 1); | |
1cc91f1b | 1044 | |
0f2d19dd | 1045 | SCM |
6e8d25a6 | 1046 | scm_m_apply (SCM xorig, SCM env) |
0f2d19dd | 1047 | { |
6cb702da | 1048 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 1049 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
1050 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1051 | } | |
1052 | ||
b8229a3b MS |
1053 | |
1054 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
2f0d1375 | 1055 | SCM_GLOBAL_SYMBOL(scm_sym_atcall_cc,s_atcall_cc); |
0f2d19dd | 1056 | |
1cc91f1b | 1057 | |
0f2d19dd | 1058 | SCM |
6e8d25a6 | 1059 | scm_m_cont (SCM xorig, SCM env) |
0f2d19dd | 1060 | { |
6cb702da | 1061 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1062 | xorig, scm_s_expression, s_atcall_cc); |
3a3111a8 | 1063 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
0f2d19dd JB |
1064 | } |
1065 | ||
73b64342 MD |
1066 | /* Multi-language support */ |
1067 | ||
1068 | SCM scm_nil; | |
1069 | SCM scm_t; | |
1070 | ||
1071 | SCM_SYNTAX (s_nil_cond, "nil-cond", scm_makmmacro, scm_m_nil_cond); | |
1072 | ||
1073 | SCM | |
1074 | scm_m_nil_cond (SCM xorig, SCM env) | |
1075 | { | |
1076 | int len = scm_ilength (SCM_CDR (xorig)); | |
1077 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1078 | scm_s_expression, "nil-cond"); | |
1079 | return scm_cons (SCM_IM_NIL_COND, SCM_CDR (xorig)); | |
1080 | } | |
1081 | ||
1082 | SCM_SYNTAX (s_nil_ify, "nil-ify", scm_makmmacro, scm_m_nil_ify); | |
1083 | ||
1084 | SCM | |
1085 | scm_m_nil_ify (SCM xorig, SCM env) | |
1086 | { | |
1087 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1088 | xorig, scm_s_expression, "nil-ify"); | |
1089 | return scm_cons (SCM_IM_NIL_IFY, SCM_CDR (xorig)); | |
1090 | } | |
1091 | ||
1092 | SCM_SYNTAX (s_t_ify, "t-ify", scm_makmmacro, scm_m_t_ify); | |
1093 | ||
1094 | SCM | |
1095 | scm_m_t_ify (SCM xorig, SCM env) | |
1096 | { | |
1097 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1098 | xorig, scm_s_expression, "t-ify"); | |
1099 | return scm_cons (SCM_IM_T_IFY, SCM_CDR (xorig)); | |
1100 | } | |
1101 | ||
1102 | SCM_SYNTAX (s_0_cond, "0-cond", scm_makmmacro, scm_m_0_cond); | |
1103 | ||
1104 | SCM | |
1105 | scm_m_0_cond (SCM xorig, SCM env) | |
1106 | { | |
1107 | int len = scm_ilength (SCM_CDR (xorig)); | |
1108 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1109 | scm_s_expression, "0-cond"); | |
1110 | return scm_cons (SCM_IM_0_COND, SCM_CDR (xorig)); | |
1111 | } | |
1112 | ||
1113 | SCM_SYNTAX (s_0_ify, "0-ify", scm_makmmacro, scm_m_0_ify); | |
1114 | ||
1115 | SCM | |
1116 | scm_m_0_ify (SCM xorig, SCM env) | |
1117 | { | |
1118 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1119 | xorig, scm_s_expression, "0-ify"); | |
1120 | return scm_cons (SCM_IM_0_IFY, SCM_CDR (xorig)); | |
1121 | } | |
1122 | ||
1123 | SCM_SYNTAX (s_1_ify, "1-ify", scm_makmmacro, scm_m_1_ify); | |
1124 | ||
1125 | SCM | |
1126 | scm_m_1_ify (SCM xorig, SCM env) | |
1127 | { | |
1128 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1129 | xorig, scm_s_expression, "1-ify"); | |
1130 | return scm_cons (SCM_IM_1_IFY, SCM_CDR (xorig)); | |
1131 | } | |
1132 | ||
1133 | SCM_SYNTAX (s_atfop, "@fop", scm_makmmacro, scm_m_atfop); | |
1134 | ||
1135 | SCM | |
1136 | scm_m_atfop (SCM xorig, SCM env) | |
1137 | { | |
1138 | SCM x = SCM_CDR (xorig), vcell; | |
1139 | SCM_ASSYNT (scm_ilength (x) >= 1, xorig, scm_s_expression, "@fop"); | |
1140 | vcell = scm_symbol_fref (SCM_CAR (x)); | |
0c95b57d | 1141 | SCM_ASSYNT (SCM_CONSP (vcell), x, |
73b64342 MD |
1142 | "Symbol's function definition is void", NULL); |
1143 | SCM_SETCAR (x, vcell + 1); | |
1144 | return x; | |
1145 | } | |
1146 | ||
1147 | SCM_SYNTAX (s_atbind, "@bind", scm_makmmacro, scm_m_atbind); | |
1148 | ||
1149 | SCM | |
1150 | scm_m_atbind (SCM xorig, SCM env) | |
1151 | { | |
1152 | SCM x = SCM_CDR (xorig); | |
1153 | SCM_ASSYNT (scm_ilength (x) > 1, xorig, scm_s_expression, "@bind"); | |
1154 | ||
1155 | if (SCM_IMP (env)) | |
1156 | env = SCM_BOOL_F; | |
1157 | else | |
1158 | { | |
1159 | while (SCM_NIMP (SCM_CDR (env))) | |
1160 | env = SCM_CDR (env); | |
1161 | env = SCM_CAR (env); | |
1162 | if (SCM_CONSP (env)) | |
1163 | env = SCM_BOOL_F; | |
1164 | } | |
1165 | ||
1166 | x = SCM_CAR (x); | |
1167 | while (SCM_NIMP (x)) | |
1168 | { | |
1169 | SCM_SETCAR (x, scm_sym2vcell (SCM_CAR (x), env, SCM_BOOL_T) + 1); | |
1170 | x = SCM_CDR (x); | |
1171 | } | |
1172 | return scm_cons (SCM_IM_BIND, SCM_CDR (xorig)); | |
1173 | } | |
73b64342 | 1174 | |
26d5b9b4 MD |
1175 | SCM |
1176 | scm_m_expand_body (SCM xorig, SCM env) | |
1177 | { | |
1178 | SCM form, x = SCM_CDR (xorig), defs = SCM_EOL; | |
1179 | char *what = SCM_ISYMCHARS (SCM_CAR (xorig)) + 2; | |
1180 | ||
1181 | while (SCM_NIMP (x)) | |
1182 | { | |
1183 | form = SCM_CAR (x); | |
1184 | if (SCM_IMP (form) || SCM_NCONSP (form)) | |
1185 | break; | |
1186 | if (SCM_IMP (SCM_CAR (form))) | |
1187 | break; | |
1188 | if (!SCM_SYMBOLP (SCM_CAR (form))) | |
1189 | break; | |
1190 | ||
3a3111a8 MD |
1191 | form = scm_macroexp (scm_cons_source (form, |
1192 | SCM_CAR (form), | |
1193 | SCM_CDR (form)), | |
1194 | env); | |
26d5b9b4 MD |
1195 | |
1196 | if (SCM_IM_DEFINE == SCM_CAR (form)) | |
1197 | { | |
1198 | defs = scm_cons (SCM_CDR (form), defs); | |
1199 | x = SCM_CDR(x); | |
1200 | } | |
1201 | else if (SCM_NIMP(defs)) | |
1202 | { | |
1203 | break; | |
1204 | } | |
1205 | else if (SCM_IM_BEGIN == SCM_CAR (form)) | |
1206 | { | |
1207 | x = scm_append (scm_cons2 (SCM_CDR (form), SCM_CDR (x), SCM_EOL)); | |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | x = scm_cons (form, SCM_CDR(x)); | |
1212 | break; | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | SCM_ASSYNT (SCM_NIMP (x), SCM_CDR (xorig), scm_s_body, what); | |
1217 | if (SCM_NIMP (defs)) | |
1218 | { | |
1219 | x = scm_cons (scm_m_letrec1 (SCM_IM_LETREC, | |
1220 | SCM_IM_DEFINE, | |
2f0d1375 | 1221 | scm_cons2 (scm_sym_define, defs, x), |
26d5b9b4 MD |
1222 | env), |
1223 | SCM_EOL); | |
1224 | } | |
1225 | ||
1226 | SCM_DEFER_INTS; | |
1227 | SCM_SETCAR (xorig, SCM_CAR (x)); | |
1228 | SCM_SETCDR (xorig, SCM_CDR (x)); | |
1229 | SCM_ALLOW_INTS; | |
1230 | ||
1231 | return xorig; | |
1232 | } | |
1233 | ||
1234 | SCM | |
1235 | scm_macroexp (SCM x, SCM env) | |
1236 | { | |
1237 | SCM res, proc; | |
1238 | ||
1239 | /* Don't bother to produce error messages here. We get them when we | |
1240 | eventually execute the code for real. */ | |
1241 | ||
1242 | macro_tail: | |
1243 | if (SCM_IMP (SCM_CAR (x)) || !SCM_SYMBOLP (SCM_CAR (x))) | |
1244 | return x; | |
1245 | ||
1246 | #ifdef USE_THREADS | |
1247 | { | |
1248 | SCM *proc_ptr = scm_lookupcar1 (x, env, 0); | |
1249 | if (proc_ptr == NULL) | |
1250 | { | |
1251 | /* We have lost the race. */ | |
1252 | goto macro_tail; | |
1253 | } | |
1254 | proc = *proc_ptr; | |
1255 | } | |
1256 | #else | |
1257 | proc = *scm_lookupcar (x, env, 0); | |
1258 | #endif | |
1259 | ||
1260 | /* Only handle memoizing macros. `Acros' and `macros' are really | |
1261 | special forms and should not be evaluated here. */ | |
1262 | ||
1263 | if (SCM_IMP (proc) | |
1264 | || scm_tc16_macro != SCM_TYP16 (proc) | |
1265 | || (int) (SCM_CAR (proc) >> 16) != 2) | |
1266 | return x; | |
1267 | ||
1268 | unmemocar (x, env); | |
1269 | res = scm_apply (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1270 | ||
1271 | if (scm_ilength (res) <= 0) | |
1272 | res = scm_cons2 (SCM_IM_BEGIN, res, SCM_EOL); | |
1273 | ||
26d5b9b4 MD |
1274 | SCM_DEFER_INTS; |
1275 | SCM_SETCAR (x, SCM_CAR (res)); | |
1276 | SCM_SETCDR (x, SCM_CDR (res)); | |
1277 | SCM_ALLOW_INTS; | |
1278 | ||
1279 | goto macro_tail; | |
1280 | } | |
73b64342 | 1281 | |
6dbd0af5 MD |
1282 | /* scm_unmemocopy takes a memoized expression together with its |
1283 | * environment and rewrites it to its original form. Thus, it is the | |
1284 | * inversion of the rewrite rules above. The procedure is not | |
1285 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1286 | * code of a closure, in scm_procedure_source, in display_frame when |
1287 | * generating the source for a stackframe in a backtrace, and in | |
1288 | * display_expression. | |
6dbd0af5 MD |
1289 | */ |
1290 | ||
26d5b9b4 MD |
1291 | /* We should introduce an anti-macro interface so that it is possible |
1292 | * to plug in transformers in both directions from other compilation | |
1293 | * units. unmemocopy could then dispatch to anti-macro transformers. | |
1294 | * (Those transformers could perhaps be written in slightly more | |
1295 | * readable style... :) | |
1296 | */ | |
1297 | ||
6dbd0af5 | 1298 | static SCM |
1bbd0b84 | 1299 | unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1300 | { |
1301 | SCM ls, z; | |
1302 | #ifdef DEBUG_EXTENSIONS | |
1303 | SCM p; | |
1304 | #endif | |
1305 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1306 | return x; | |
1307 | #ifdef DEBUG_EXTENSIONS | |
1308 | p = scm_whash_lookup (scm_source_whash, x); | |
1309 | #endif | |
1310 | switch (SCM_TYP7 (x)) | |
1311 | { | |
1312 | case (127 & SCM_IM_AND): | |
2f0d1375 | 1313 | ls = z = scm_cons (scm_sym_and, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1314 | break; |
1315 | case (127 & SCM_IM_BEGIN): | |
2f0d1375 | 1316 | ls = z = scm_cons (scm_sym_begin, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1317 | break; |
1318 | case (127 & SCM_IM_CASE): | |
2f0d1375 | 1319 | ls = z = scm_cons (scm_sym_case, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1320 | break; |
1321 | case (127 & SCM_IM_COND): | |
2f0d1375 | 1322 | ls = z = scm_cons (scm_sym_cond, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1323 | break; |
1324 | case (127 & SCM_IM_DO): | |
2f0d1375 | 1325 | ls = scm_cons (scm_sym_do, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1326 | goto transform; |
1327 | case (127 & SCM_IM_IF): | |
2f0d1375 | 1328 | ls = z = scm_cons (scm_sym_if, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1329 | break; |
1330 | case (127 & SCM_IM_LET): | |
2f0d1375 | 1331 | ls = scm_cons (scm_sym_let, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1332 | goto transform; |
1333 | case (127 & SCM_IM_LETREC): | |
1334 | { | |
1335 | SCM f, v, e, s; | |
2f0d1375 | 1336 | ls = scm_cons (scm_sym_letrec, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1337 | transform: |
1338 | x = SCM_CDR (x); | |
26d5b9b4 | 1339 | /* binding names */ |
6dbd0af5 MD |
1340 | f = v = SCM_CAR (x); |
1341 | x = SCM_CDR (x); | |
e2806c10 | 1342 | z = EXTEND_ENV (f, SCM_EOL, env); |
26d5b9b4 | 1343 | /* inits */ |
6dbd0af5 | 1344 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
2f0d1375 | 1345 | SCM_CAR (ls) == scm_sym_letrec ? z : env)); |
6dbd0af5 | 1346 | env = z; |
26d5b9b4 | 1347 | /* increments */ |
2f0d1375 | 1348 | s = SCM_CAR (ls) == scm_sym_do |
6dbd0af5 MD |
1349 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) |
1350 | : f; | |
26d5b9b4 | 1351 | /* build transformed binding list */ |
6dbd0af5 MD |
1352 | z = SCM_EOL; |
1353 | do | |
1354 | { | |
1355 | z = scm_acons (SCM_CAR (v), | |
1356 | scm_cons (SCM_CAR (e), | |
1357 | SCM_CAR (s) == SCM_CAR (v) | |
1358 | ? SCM_EOL | |
1359 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1360 | z); | |
1361 | v = SCM_CDR (v); | |
1362 | e = SCM_CDR (e); | |
1363 | s = SCM_CDR (s); | |
1364 | } | |
ff467021 | 1365 | while (SCM_NIMP (v)); |
a23afe53 MD |
1366 | z = scm_cons (z, SCM_UNSPECIFIED); |
1367 | SCM_SETCDR (ls, z); | |
2f0d1375 | 1368 | if (SCM_CAR (ls) == scm_sym_do) |
6dbd0af5 MD |
1369 | { |
1370 | x = SCM_CDR (x); | |
26d5b9b4 | 1371 | /* test clause */ |
a23afe53 | 1372 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1373 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1374 | z = SCM_CDR (z); |
1375 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
26d5b9b4 MD |
1376 | /* body forms are now to be found in SCM_CDR (x) |
1377 | (this is how *real* code look like! :) */ | |
6dbd0af5 MD |
1378 | } |
1379 | break; | |
1380 | } | |
1381 | case (127 & SCM_IM_LETSTAR): | |
1382 | { | |
1383 | SCM b, y; | |
1384 | x = SCM_CDR (x); | |
1385 | b = SCM_CAR (x); | |
1386 | y = SCM_EOL; | |
1387 | if SCM_IMP (b) | |
1388 | { | |
e2806c10 | 1389 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1390 | goto letstar; |
1391 | } | |
1392 | y = z = scm_acons (SCM_CAR (b), | |
1393 | unmemocar ( | |
1394 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1395 | SCM_UNSPECIFIED); | |
e2806c10 | 1396 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1397 | b = SCM_CDR (SCM_CDR (b)); |
1398 | if (SCM_IMP (b)) | |
1399 | { | |
1400 | SCM_SETCDR (y, SCM_EOL); | |
2f0d1375 | 1401 | ls = scm_cons (scm_sym_let, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1402 | break; |
1403 | } | |
1404 | do | |
1405 | { | |
a23afe53 MD |
1406 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1407 | unmemocar ( | |
6dbd0af5 | 1408 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1409 | SCM_UNSPECIFIED)); |
1410 | z = SCM_CDR (z); | |
e2806c10 | 1411 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1412 | b = SCM_CDR (SCM_CDR (b)); |
1413 | } | |
ff467021 | 1414 | while (SCM_NIMP (b)); |
a23afe53 | 1415 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 | 1416 | letstar: |
2f0d1375 | 1417 | ls = scm_cons (scm_sym_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1418 | break; |
1419 | } | |
1420 | case (127 & SCM_IM_OR): | |
2f0d1375 | 1421 | ls = z = scm_cons (scm_sym_or, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1422 | break; |
1423 | case (127 & SCM_IM_LAMBDA): | |
1424 | x = SCM_CDR (x); | |
2f0d1375 | 1425 | ls = scm_cons (scm_sym_lambda, |
6dbd0af5 | 1426 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); |
e2806c10 | 1427 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1428 | break; |
1429 | case (127 & SCM_IM_QUOTE): | |
2f0d1375 | 1430 | ls = z = scm_cons (scm_sym_quote, SCM_UNSPECIFIED); |
6dbd0af5 | 1431 | break; |
89efbff4 MD |
1432 | case (127 & SCM_IM_SET_X): |
1433 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); | |
6dbd0af5 MD |
1434 | break; |
1435 | case (127 & SCM_IM_DEFINE): | |
1436 | { | |
1437 | SCM n; | |
1438 | x = SCM_CDR (x); | |
2f0d1375 | 1439 | ls = scm_cons (scm_sym_define, |
6dbd0af5 MD |
1440 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); |
1441 | if (SCM_NNULLP (env)) | |
a23afe53 | 1442 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1443 | break; |
1444 | } | |
1445 | case (127 & SCM_MAKISYM (0)): | |
1446 | z = SCM_CAR (x); | |
1447 | if (!SCM_ISYMP (z)) | |
1448 | goto unmemo; | |
ff467021 | 1449 | switch (SCM_ISYMNUM (z)) |
6dbd0af5 MD |
1450 | { |
1451 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2f0d1375 | 1452 | ls = z = scm_cons (scm_sym_atapply, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1453 | goto loop; |
1454 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2f0d1375 | 1455 | ls = z = scm_cons (scm_sym_atcall_cc, SCM_UNSPECIFIED); |
6dbd0af5 | 1456 | goto loop; |
a570e93a MD |
1457 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
1458 | ls = z = scm_cons (scm_sym_delay, SCM_UNSPECIFIED); | |
1459 | x = SCM_CDR (x); | |
1460 | goto loop; | |
6dbd0af5 | 1461 | default: |
fa888178 | 1462 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1463 | } |
1464 | unmemo: | |
1465 | default: | |
1466 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1467 | SCM_UNSPECIFIED), | |
1468 | env); | |
1469 | } | |
1470 | loop: | |
1471 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 | 1472 | { |
26d5b9b4 MD |
1473 | if (SCM_IMP (SCM_CAR (x)) && SCM_ISYMP (SCM_CAR (x))) |
1474 | /* skip body markers */ | |
1475 | continue; | |
a23afe53 MD |
1476 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), |
1477 | SCM_UNSPECIFIED), | |
1478 | env)); | |
1479 | z = SCM_CDR (z); | |
1480 | } | |
1481 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1482 | #ifdef DEBUG_EXTENSIONS |
1483 | if (SCM_NFALSEP (p)) | |
1484 | scm_whash_insert (scm_source_whash, ls, p); | |
1485 | #endif | |
1486 | return ls; | |
1487 | } | |
1488 | ||
1cc91f1b | 1489 | |
6dbd0af5 | 1490 | SCM |
6e8d25a6 | 1491 | scm_unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1492 | { |
1493 | if (SCM_NNULLP (env)) | |
1494 | /* Make a copy of the lowest frame to protect it from | |
1495 | modifications by SCM_IM_DEFINE */ | |
1496 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1497 | else | |
1498 | return unmemocopy (x, env); | |
1499 | } | |
1500 | ||
cf7c17e9 | 1501 | #ifndef SCM_RECKLESS |
1cc91f1b | 1502 | |
0f2d19dd | 1503 | int |
6e8d25a6 | 1504 | scm_badargsp (SCM formals, SCM args) |
0f2d19dd | 1505 | { |
ff467021 | 1506 | while (SCM_NIMP (formals)) |
0f2d19dd | 1507 | { |
ff467021 JB |
1508 | if (SCM_NCONSP (formals)) |
1509 | return 0; | |
1510 | if (SCM_IMP(args)) | |
1511 | return 1; | |
0f2d19dd JB |
1512 | formals = SCM_CDR (formals); |
1513 | args = SCM_CDR (args); | |
1514 | } | |
1515 | return SCM_NNULLP (args) ? 1 : 0; | |
1516 | } | |
1517 | #endif | |
1518 | ||
1519 | ||
1520 | \f | |
6dbd0af5 | 1521 | SCM |
6e8d25a6 | 1522 | scm_eval_args (SCM l, SCM env, SCM proc) |
6dbd0af5 | 1523 | { |
680ed4a8 | 1524 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1525 | while (SCM_NIMP (l)) |
1526 | { | |
cf7c17e9 | 1527 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1528 | if (SCM_IMP (l)) |
1529 | goto wrongnumargs; | |
1530 | else if (SCM_CONSP (l)) | |
1531 | { | |
1532 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1533 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1534 | else |
1535 | res = EVALCELLCAR (l, env); | |
1536 | } | |
1537 | else if (SCM_TYP3 (l) == 1) | |
1538 | { | |
1539 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1540 | res = SCM_CAR (l); /* struct planted in code */ | |
1541 | } | |
1542 | else | |
1543 | goto wrongnumargs; | |
1544 | #else | |
1545 | res = EVALCAR (l, env); | |
1546 | #endif | |
1547 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1548 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1549 | l = SCM_CDR (l); |
1550 | } | |
cf7c17e9 | 1551 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1552 | if (SCM_NNULLP (l)) |
1553 | { | |
1554 | wrongnumargs: | |
1555 | scm_wrong_num_args (proc); | |
1556 | } | |
1557 | #endif | |
1558 | return results; | |
6dbd0af5 | 1559 | } |
c4ac4d88 | 1560 | |
9de33deb MD |
1561 | SCM |
1562 | scm_eval_body (SCM code, SCM env) | |
1563 | { | |
1564 | SCM next; | |
1565 | again: | |
1566 | next = code; | |
1567 | while (SCM_NNULLP (next = SCM_CDR (next))) | |
1568 | { | |
1569 | if (SCM_IMP (SCM_CAR (code))) | |
1570 | { | |
1571 | if (SCM_ISYMP (SCM_CAR (code))) | |
1572 | { | |
1573 | code = scm_m_expand_body (code, env); | |
1574 | goto again; | |
1575 | } | |
1576 | } | |
1577 | else | |
1578 | SCM_XEVAL (SCM_CAR (code), env); | |
1579 | code = next; | |
1580 | } | |
1581 | return SCM_XEVALCAR (code, env); | |
1582 | } | |
1583 | ||
c4ac4d88 | 1584 | |
0f2d19dd JB |
1585 | #endif /* !DEVAL */ |
1586 | ||
6dbd0af5 MD |
1587 | |
1588 | /* SECTION: This code is specific for the debugging support. One | |
1589 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1590 | * defined. | |
1591 | */ | |
1592 | ||
1593 | #ifndef DEVAL | |
1594 | ||
1595 | #define SCM_APPLY scm_apply | |
1596 | #define PREP_APPLY(proc, args) | |
1597 | #define ENTER_APPLY | |
1598 | #define RETURN(x) return x; | |
b7ff98dd MD |
1599 | #ifdef STACK_CHECKING |
1600 | #ifndef NO_CEVAL_STACK_CHECKING | |
1601 | #define EVAL_STACK_CHECKING | |
1602 | #endif | |
6dbd0af5 MD |
1603 | #endif |
1604 | ||
1605 | #else /* !DEVAL */ | |
1606 | ||
0f2d19dd JB |
1607 | #undef SCM_CEVAL |
1608 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1609 | #undef SCM_APPLY | |
1610 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1611 | #undef PREP_APPLY |
1612 | #define PREP_APPLY(p, l) \ | |
1613 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1614 | #undef ENTER_APPLY | |
1615 | #define ENTER_APPLY \ | |
d3a6bc94 | 1616 | do { \ |
b7ff98dd | 1617 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1618 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1619 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1620 | {\ |
156dcb09 | 1621 | SCM tmp, tail = SCM_BOOL(SCM_TRACED_FRAME_P (debug)); \ |
c6a4fbce | 1622 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1623 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1624 | {\ |
c0ab1b8d | 1625 | tmp = scm_make_debugobj (&debug);\ |
2f0d1375 | 1626 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1627 | }\ |
6dbd0af5 MD |
1628 | else\ |
1629 | {\ | |
1630 | scm_make_cont (&tmp);\ | |
ca6ef71a | 1631 | if (!setjmp (SCM_JMPBUF (tmp)))\ |
2f0d1375 | 1632 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
6dbd0af5 MD |
1633 | }\ |
1634 | }\ | |
d3a6bc94 | 1635 | } while (0) |
0f2d19dd JB |
1636 | #undef RETURN |
1637 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1638 | #ifdef STACK_CHECKING |
1639 | #ifndef EVAL_STACK_CHECKING | |
1640 | #define EVAL_STACK_CHECKING | |
1641 | #endif | |
6dbd0af5 MD |
1642 | #endif |
1643 | ||
1644 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1645 | * *fixme*: Although efficiency is important here, this state variable | |
1646 | * should probably not be a global. It should be related to the | |
1647 | * current repl. | |
1648 | */ | |
1649 | ||
1cc91f1b | 1650 | |
1bbd0b84 | 1651 | SCM (*scm_ceval_ptr) (SCM x, SCM env); |
0f2d19dd | 1652 | |
1646d37b | 1653 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1654 | * information stack frame. It is accessed very often from the |
1655 | * debugging evaluator, so it should probably not be indirectly | |
1656 | * addressed. Better to save and restore it from the current root at | |
1657 | * any stack swaps. | |
1658 | */ | |
1659 | ||
1646d37b MD |
1660 | #ifndef USE_THREADS |
1661 | scm_debug_frame *scm_last_debug_frame; | |
1662 | #endif | |
6dbd0af5 MD |
1663 | |
1664 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1665 | * stack frames at each real stack frame. | |
1666 | */ | |
1667 | ||
1668 | int scm_debug_eframe_size; | |
1669 | ||
b7ff98dd | 1670 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1671 | |
a74145b8 MD |
1672 | int scm_eval_stack; |
1673 | ||
33b97402 | 1674 | scm_option scm_eval_opts[] = { |
a74145b8 | 1675 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1676 | }; |
1677 | ||
6dbd0af5 | 1678 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1679 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1680 | "*Flyweight representation of the stack at traps." }, | |
1681 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1682 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1683 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1684 | "Record procedure names at definition." }, | |
1685 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1686 | "Display backtrace in anti-chronological order." }, | |
274dc5fd | 1687 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, |
4e646a03 MD |
1688 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1689 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1690 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1691 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1692 | "Maximal number of stored backtrace frames." }, | |
1693 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1694 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1695 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1696 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1697 | }; |
1698 | ||
1699 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1700 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1701 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1702 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1703 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1704 | }; |
1705 | ||
a1ec6916 | 1706 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
1bbd0b84 GB |
1707 | (SCM setting), |
1708 | "") | |
1709 | #define FUNC_NAME s_scm_eval_options_interface | |
33b97402 MD |
1710 | { |
1711 | SCM ans; | |
1712 | SCM_DEFER_INTS; | |
1713 | ans = scm_options (setting, | |
1714 | scm_eval_opts, | |
1715 | SCM_N_EVAL_OPTIONS, | |
1bbd0b84 | 1716 | FUNC_NAME); |
a74145b8 | 1717 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1718 | SCM_ALLOW_INTS; |
1719 | return ans; | |
1720 | } | |
1bbd0b84 | 1721 | #undef FUNC_NAME |
33b97402 | 1722 | |
a1ec6916 | 1723 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
1bbd0b84 GB |
1724 | (SCM setting), |
1725 | "") | |
1726 | #define FUNC_NAME s_scm_evaluator_traps | |
33b97402 MD |
1727 | { |
1728 | SCM ans; | |
1729 | SCM_DEFER_INTS; | |
1730 | ans = scm_options (setting, | |
1731 | scm_evaluator_trap_table, | |
1732 | SCM_N_EVALUATOR_TRAPS, | |
1bbd0b84 | 1733 | FUNC_NAME); |
33b97402 | 1734 | SCM_RESET_DEBUG_MODE; |
bfc69694 | 1735 | SCM_ALLOW_INTS; |
33b97402 MD |
1736 | return ans; |
1737 | } | |
1bbd0b84 | 1738 | #undef FUNC_NAME |
33b97402 | 1739 | |
6dbd0af5 | 1740 | SCM |
6e8d25a6 | 1741 | scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc) |
0f2d19dd | 1742 | { |
680ed4a8 | 1743 | SCM *results = lloc, res; |
0f2d19dd JB |
1744 | while (SCM_NIMP (l)) |
1745 | { | |
cf7c17e9 | 1746 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1747 | if (SCM_IMP (l)) |
1748 | goto wrongnumargs; | |
1749 | else if (SCM_CONSP (l)) | |
1750 | { | |
1751 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1752 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1753 | else |
1754 | res = EVALCELLCAR (l, env); | |
1755 | } | |
1756 | else if (SCM_TYP3 (l) == 1) | |
1757 | { | |
1758 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1759 | res = SCM_CAR (l); /* struct planted in code */ | |
1760 | } | |
1761 | else | |
1762 | goto wrongnumargs; | |
1763 | #else | |
1764 | res = EVALCAR (l, env); | |
1765 | #endif | |
1766 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1767 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1768 | l = SCM_CDR (l); |
1769 | } | |
cf7c17e9 | 1770 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1771 | if (SCM_NNULLP (l)) |
1772 | { | |
1773 | wrongnumargs: | |
1774 | scm_wrong_num_args (proc); | |
1775 | } | |
1776 | #endif | |
1777 | return *results; | |
0f2d19dd JB |
1778 | } |
1779 | ||
6dbd0af5 MD |
1780 | #endif /* !DEVAL */ |
1781 | ||
1782 | ||
1783 | /* SECTION: Some local definitions for the evaluator. | |
1784 | */ | |
1785 | ||
1786 | #ifndef DEVAL | |
1787 | #ifdef SCM_FLOATS | |
1788 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1789 | #else | |
1790 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1791 | #endif | |
1792 | #endif /* DEVAL */ | |
1793 | ||
399dedcc | 1794 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1795 | |
1796 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1797 | * three heads. This code is compiled twice. | |
1798 | */ | |
1799 | ||
0f2d19dd | 1800 | #if 0 |
1cc91f1b | 1801 | |
0f2d19dd | 1802 | SCM |
1bbd0b84 | 1803 | scm_ceval (SCM x, SCM env) |
0f2d19dd JB |
1804 | {} |
1805 | #endif | |
1806 | #if 0 | |
1cc91f1b | 1807 | |
0f2d19dd | 1808 | SCM |
1bbd0b84 | 1809 | scm_deval (SCM x, SCM env) |
0f2d19dd JB |
1810 | {} |
1811 | #endif | |
1812 | ||
6dbd0af5 | 1813 | SCM |
1bbd0b84 | 1814 | SCM_CEVAL (SCM x, SCM env) |
0f2d19dd JB |
1815 | { |
1816 | union | |
1817 | { | |
1818 | SCM *lloc; | |
1819 | SCM arg1; | |
f8769b1d | 1820 | } t; |
6dbd0af5 MD |
1821 | SCM proc, arg2; |
1822 | #ifdef DEVAL | |
c0ab1b8d JB |
1823 | scm_debug_frame debug; |
1824 | scm_debug_info *debug_info_end; | |
1646d37b | 1825 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1826 | debug.status = scm_debug_eframe_size; |
04b6c081 MD |
1827 | /* |
1828 | * The debug.vect contains twice as much scm_debug_info frames as the | |
1829 | * user has specified with (debug-set! frames <n>). | |
1830 | * | |
1831 | * Even frames are eval frames, odd frames are apply frames. | |
1832 | */ | |
c0ab1b8d JB |
1833 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1834 | * sizeof (debug.vect[0])); | |
1835 | debug.info = debug.vect; | |
1836 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1837 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1838 | #endif |
b7ff98dd | 1839 | #ifdef EVAL_STACK_CHECKING |
6f13f9cb MD |
1840 | if (scm_stack_checking_enabled_p |
1841 | && SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc)) | |
6dbd0af5 | 1842 | { |
b7ff98dd | 1843 | #ifdef DEVAL |
6dbd0af5 MD |
1844 | debug.info->e.exp = x; |
1845 | debug.info->e.env = env; | |
b7ff98dd | 1846 | #endif |
6dbd0af5 MD |
1847 | scm_report_stack_overflow (); |
1848 | } | |
1849 | #endif | |
1850 | #ifdef DEVAL | |
1851 | goto start; | |
1852 | #endif | |
1853 | loopnoap: | |
1854 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1855 | loop: | |
1856 | #ifdef DEVAL | |
b7ff98dd MD |
1857 | SCM_CLEAR_ARGSREADY (debug); |
1858 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1859 | --debug.info; |
04b6c081 MD |
1860 | /* |
1861 | * In theory, this should be the only place where it is necessary to | |
1862 | * check for space in debug.vect since both eval frames and | |
1863 | * available space are even. | |
1864 | * | |
1865 | * For this to be the case, however, it is necessary that primitive | |
1866 | * special forms which jump back to `loop', `begin' or some similar | |
1867 | * label call PREP_APPLY. A convenient way to do this is to jump to | |
1868 | * `loopnoap' or `cdrxnoap'. | |
1869 | */ | |
c0ab1b8d | 1870 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1871 | { |
b7ff98dd | 1872 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1873 | debug.info -= 2; |
1874 | } | |
1875 | start: | |
1876 | debug.info->e.exp = x; | |
1877 | debug.info->e.env = env; | |
b6d75948 | 1878 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1879 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1880 | { |
156dcb09 | 1881 | SCM tail = SCM_BOOL(SCM_TAILRECP (debug)); |
b7ff98dd | 1882 | SCM_SET_TAILREC (debug); |
b7ff98dd | 1883 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1884 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1885 | else |
1886 | { | |
1887 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1888 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1889 | { |
1890 | x = SCM_THROW_VALUE (t.arg1); | |
1891 | if (SCM_IMP (x)) | |
1892 | { | |
1893 | RETURN (x); | |
1894 | } | |
1895 | else | |
1896 | /* This gives the possibility for the debugger to | |
1897 | modify the source expression before evaluation. */ | |
1898 | goto dispatch; | |
1899 | } | |
1900 | } | |
2f0d1375 | 1901 | scm_ithrow (scm_sym_enter_frame, |
6dbd0af5 MD |
1902 | scm_cons2 (t.arg1, tail, |
1903 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1904 | 0); | |
1905 | } | |
6dbd0af5 | 1906 | #endif |
e3173f93 | 1907 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1908 | dispatch: |
e3173f93 | 1909 | #endif |
9cb5124f | 1910 | SCM_TICK; |
0f2d19dd JB |
1911 | switch (SCM_TYP7 (x)) |
1912 | { | |
1913 | case scm_tcs_symbols: | |
1914 | /* Only happens when called at top level. | |
1915 | */ | |
1916 | x = scm_cons (x, SCM_UNDEFINED); | |
1917 | goto retval; | |
1918 | ||
1919 | case (127 & SCM_IM_AND): | |
1920 | x = SCM_CDR (x); | |
1921 | t.arg1 = x; | |
1922 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1923 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1924 | { | |
1925 | RETURN (SCM_BOOL_F); | |
1926 | } | |
1927 | else | |
1928 | x = t.arg1; | |
6dbd0af5 | 1929 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1930 | goto carloop; |
1931 | ||
1932 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1933 | cdrxnoap: |
1934 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1935 | cdrxbegin: |
1936 | x = SCM_CDR (x); | |
1937 | ||
1938 | begin: | |
1939 | t.arg1 = x; | |
1940 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1941 | { | |
26d5b9b4 MD |
1942 | if (SCM_IMP (SCM_CAR (x))) |
1943 | { | |
1944 | if (SCM_ISYMP (SCM_CAR (x))) | |
1945 | { | |
1946 | x = scm_m_expand_body (x, env); | |
1947 | goto begin; | |
1948 | } | |
1949 | } | |
1950 | else | |
1951 | SCM_CEVAL (SCM_CAR (x), env); | |
0f2d19dd JB |
1952 | x = t.arg1; |
1953 | } | |
1954 | ||
1955 | carloop: /* scm_eval car of last form in list */ | |
1956 | if (SCM_NCELLP (SCM_CAR (x))) | |
1957 | { | |
1958 | x = SCM_CAR (x); | |
6cb702da | 1959 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1960 | } |
1961 | ||
1962 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1963 | { | |
1964 | retval: | |
26d5b9b4 | 1965 | RETURN (*scm_lookupcar (x, env, 1)) |
0f2d19dd JB |
1966 | } |
1967 | ||
1968 | x = SCM_CAR (x); | |
1969 | goto loop; /* tail recurse */ | |
1970 | ||
1971 | ||
1972 | case (127 & SCM_IM_CASE): | |
1973 | x = SCM_CDR (x); | |
1974 | t.arg1 = EVALCAR (x, env); | |
1975 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1976 | { | |
1977 | proc = SCM_CAR (x); | |
2f0d1375 | 1978 | if (scm_sym_else == SCM_CAR (proc)) |
0f2d19dd JB |
1979 | { |
1980 | x = SCM_CDR (proc); | |
6dbd0af5 | 1981 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1982 | goto begin; |
1983 | } | |
1984 | proc = SCM_CAR (proc); | |
1985 | while (SCM_NIMP (proc)) | |
1986 | { | |
1987 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1988 | { | |
1989 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1990 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1991 | goto begin; |
1992 | } | |
1993 | proc = SCM_CDR (proc); | |
1994 | } | |
1995 | } | |
6dbd0af5 | 1996 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1997 | |
1998 | ||
1999 | case (127 & SCM_IM_COND): | |
2000 | while (SCM_NIMP (x = SCM_CDR (x))) | |
2001 | { | |
2002 | proc = SCM_CAR (x); | |
2003 | t.arg1 = EVALCAR (proc, env); | |
2004 | if (SCM_NFALSEP (t.arg1)) | |
2005 | { | |
2006 | x = SCM_CDR (proc); | |
6dbd0af5 | 2007 | if SCM_NULLP (x) |
0f2d19dd | 2008 | { |
6dbd0af5 | 2009 | RETURN (t.arg1) |
0f2d19dd | 2010 | } |
2f0d1375 | 2011 | if (scm_sym_arrow != SCM_CAR (x)) |
6dbd0af5 MD |
2012 | { |
2013 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2014 | goto begin; | |
2015 | } | |
0f2d19dd JB |
2016 | proc = SCM_CDR (x); |
2017 | proc = EVALCAR (proc, env); | |
2018 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2019 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2020 | ENTER_APPLY; | |
0f2d19dd JB |
2021 | goto evap1; |
2022 | } | |
2023 | } | |
6dbd0af5 | 2024 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2025 | |
2026 | ||
2027 | case (127 & SCM_IM_DO): | |
2028 | x = SCM_CDR (x); | |
2029 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
2030 | t.arg1 = SCM_EOL; /* values */ | |
2031 | while (SCM_NIMP (proc)) | |
2032 | { | |
2033 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2034 | proc = SCM_CDR (proc); | |
2035 | } | |
e2806c10 | 2036 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
2037 | x = SCM_CDR (SCM_CDR (x)); |
2038 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
2039 | { | |
f3d2630a | 2040 | for (proc = SCM_CADR (x); SCM_NIMP (proc); proc = SCM_CDR (proc)) |
0f2d19dd JB |
2041 | { |
2042 | t.arg1 = SCM_CAR (proc); /* body */ | |
2043 | SIDEVAL (t.arg1, env); | |
2044 | } | |
f3d2630a MD |
2045 | for (t.arg1 = SCM_EOL, proc = SCM_CDDR (x); |
2046 | SCM_NIMP (proc); | |
2047 | proc = SCM_CDR (proc)) | |
0f2d19dd | 2048 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ |
e2806c10 | 2049 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
2050 | } |
2051 | x = SCM_CDR (proc); | |
2052 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
2053 | RETURN (SCM_UNSPECIFIED); |
2054 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
2055 | goto begin; |
2056 | ||
2057 | ||
2058 | case (127 & SCM_IM_IF): | |
2059 | x = SCM_CDR (x); | |
2060 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
2061 | x = SCM_CDR (x); | |
2062 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
2063 | { | |
2064 | RETURN (SCM_UNSPECIFIED); | |
2065 | } | |
6dbd0af5 | 2066 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2067 | goto carloop; |
2068 | ||
2069 | ||
2070 | case (127 & SCM_IM_LET): | |
2071 | x = SCM_CDR (x); | |
2072 | proc = SCM_CAR (SCM_CDR (x)); | |
2073 | t.arg1 = SCM_EOL; | |
2074 | do | |
2075 | { | |
2076 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2077 | } | |
2078 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 2079 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 2080 | x = SCM_CDR (x); |
6dbd0af5 | 2081 | goto cdrxnoap; |
0f2d19dd JB |
2082 | |
2083 | ||
2084 | case (127 & SCM_IM_LETREC): | |
2085 | x = SCM_CDR (x); | |
e2806c10 | 2086 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
2087 | x = SCM_CDR (x); |
2088 | proc = SCM_CAR (x); | |
2089 | t.arg1 = SCM_EOL; | |
2090 | do | |
2091 | { | |
2092 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2093 | } | |
2094 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 2095 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 2096 | goto cdrxnoap; |
0f2d19dd JB |
2097 | |
2098 | ||
2099 | case (127 & SCM_IM_LETSTAR): | |
2100 | x = SCM_CDR (x); | |
2101 | proc = SCM_CAR (x); | |
2102 | if (SCM_IMP (proc)) | |
2103 | { | |
e2806c10 | 2104 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 2105 | goto cdrxnoap; |
0f2d19dd JB |
2106 | } |
2107 | do | |
2108 | { | |
2109 | t.arg1 = SCM_CAR (proc); | |
2110 | proc = SCM_CDR (proc); | |
e2806c10 | 2111 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
2112 | } |
2113 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 2114 | goto cdrxnoap; |
0f2d19dd JB |
2115 | |
2116 | case (127 & SCM_IM_OR): | |
2117 | x = SCM_CDR (x); | |
2118 | t.arg1 = x; | |
2119 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
2120 | { | |
2121 | x = EVALCAR (x, env); | |
2122 | if (SCM_NFALSEP (x)) | |
2123 | { | |
2124 | RETURN (x); | |
2125 | } | |
2126 | x = t.arg1; | |
2127 | } | |
6dbd0af5 | 2128 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2129 | goto carloop; |
2130 | ||
2131 | ||
2132 | case (127 & SCM_IM_LAMBDA): | |
2133 | RETURN (scm_closure (SCM_CDR (x), env)); | |
2134 | ||
2135 | ||
2136 | case (127 & SCM_IM_QUOTE): | |
2137 | RETURN (SCM_CAR (SCM_CDR (x))); | |
2138 | ||
2139 | ||
89efbff4 | 2140 | case (127 & SCM_IM_SET_X): |
0f2d19dd JB |
2141 | x = SCM_CDR (x); |
2142 | proc = SCM_CAR (x); | |
6dbd0af5 | 2143 | switch (7 & (int) proc) |
0f2d19dd JB |
2144 | { |
2145 | case 0: | |
26d5b9b4 | 2146 | t.lloc = scm_lookupcar (x, env, 1); |
0f2d19dd JB |
2147 | break; |
2148 | case 1: | |
a23afe53 | 2149 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
2150 | break; |
2151 | #ifdef MEMOIZE_LOCALS | |
2152 | case 4: | |
2153 | t.lloc = scm_ilookup (proc, env); | |
2154 | break; | |
2155 | #endif | |
2156 | } | |
2157 | x = SCM_CDR (x); | |
2158 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
2159 | #ifdef SICP |
2160 | RETURN (*t.lloc); | |
2161 | #else | |
2162 | RETURN (SCM_UNSPECIFIED); | |
2163 | #endif | |
2164 | ||
2165 | ||
2166 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
26d5b9b4 MD |
2167 | scm_misc_error (NULL, "Bad define placement", SCM_EOL); |
2168 | ||
0f2d19dd JB |
2169 | /* new syntactic forms go here. */ |
2170 | case (127 & SCM_MAKISYM (0)): | |
2171 | proc = SCM_CAR (x); | |
2172 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
2173 | switch SCM_ISYMNUM (proc) | |
2174 | { | |
2175 | #if 0 | |
2176 | case (SCM_ISYMNUM (IM_VREF)): | |
2177 | { | |
2178 | SCM var; | |
2179 | var = SCM_CAR (SCM_CDR (x)); | |
2180 | RETURN (SCM_CDR(var)); | |
2181 | } | |
2182 | case (SCM_ISYMNUM (IM_VSET)): | |
2183 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
2184 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 2185 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2186 | #endif |
2187 | ||
2188 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2189 | proc = SCM_CDR (x); | |
2190 | proc = EVALCAR (proc, env); | |
2191 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
2192 | if (SCM_CLOSUREP (proc)) | |
2193 | { | |
1609038c | 2194 | SCM argl, tl; |
6dbd0af5 | 2195 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
2196 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
2197 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
2198 | #ifdef DEVAL |
2199 | debug.info->a.args = t.arg1; | |
2200 | #endif | |
cf7c17e9 | 2201 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
2202 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
2203 | goto wrongnumargs; | |
2204 | #endif | |
c79450dd | 2205 | ENTER_APPLY; |
1609038c MD |
2206 | /* Copy argument list */ |
2207 | if (SCM_IMP (t.arg1)) | |
2208 | argl = t.arg1; | |
2209 | else | |
2210 | { | |
2211 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
2212 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
2213 | && SCM_CONSP (t.arg1)) | |
2214 | { | |
2215 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
2216 | SCM_UNSPECIFIED)); | |
2217 | tl = SCM_CDR (tl); | |
2218 | } | |
2219 | SCM_SETCDR (tl, t.arg1); | |
2220 | } | |
2221 | ||
2222 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
2223 | x = SCM_CODE (proc); |
2224 | goto cdrxbegin; | |
2225 | } | |
81123e6d | 2226 | proc = scm_f_apply; |
0f2d19dd JB |
2227 | goto evapply; |
2228 | ||
2229 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2230 | scm_make_cont (&t.arg1); | |
ca6ef71a | 2231 | if (setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
2232 | { |
2233 | SCM val; | |
2234 | val = SCM_THROW_VALUE (t.arg1); | |
a570e93a | 2235 | RETURN (val) |
0f2d19dd JB |
2236 | } |
2237 | proc = SCM_CDR (x); | |
2238 | proc = evalcar (proc, env); | |
2239 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2240 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2241 | ENTER_APPLY; | |
0f2d19dd JB |
2242 | goto evap1; |
2243 | ||
a570e93a MD |
2244 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
2245 | RETURN (scm_makprom (scm_closure (SCM_CDR (x), env))) | |
2246 | ||
89efbff4 | 2247 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
195847fa MD |
2248 | proc = SCM_CADR (x); /* unevaluated operands */ |
2249 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2250 | if (SCM_IMP (proc)) | |
2251 | arg2 = *scm_ilookup (proc, env); | |
2252 | else if (SCM_NCONSP (proc)) | |
2253 | { | |
2254 | if (SCM_NCELLP (proc)) | |
2255 | arg2 = SCM_GLOC_VAL (proc); | |
2256 | else | |
2257 | arg2 = *scm_lookupcar (SCM_CDR (x), env, 1); | |
2258 | } | |
2259 | else | |
2260 | { | |
2261 | arg2 = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2262 | t.lloc = SCM_CDRLOC (arg2); | |
2263 | while (SCM_NIMP (proc = SCM_CDR (proc))) | |
2264 | { | |
2265 | *t.lloc = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2266 | t.lloc = SCM_CDRLOC (*t.lloc); | |
2267 | } | |
2268 | } | |
2269 | ||
2270 | type_dispatch: | |
61364ba6 MD |
2271 | /* The type dispatch code is duplicated here |
2272 | * (c.f. objects.c:scm_mcache_compute_cmethod) since that | |
2273 | * cuts down execution time for type dispatch to 50%. | |
2274 | */ | |
2275 | { | |
2276 | int i, n, end, mask; | |
2277 | SCM z = SCM_CDDR (x); | |
2278 | n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */ | |
2279 | proc = SCM_CADR (z); | |
2280 | ||
2281 | if (SCM_NIMP (proc)) | |
2282 | { | |
2283 | /* Prepare for linear search */ | |
2284 | mask = -1; | |
2285 | i = 0; | |
2286 | end = SCM_LENGTH (proc); | |
2287 | } | |
2288 | else | |
2289 | { | |
2290 | /* Compute a hash value */ | |
2291 | int hashset = SCM_INUM (proc); | |
2292 | int j = n; | |
2293 | mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z))); | |
2294 | proc = SCM_CADR (z); | |
2295 | i = 0; | |
2296 | t.arg1 = arg2; | |
2297 | if (SCM_NIMP (t.arg1)) | |
2298 | do | |
2299 | { | |
2300 | i += (SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1))) | |
2301 | [scm_si_hashsets + hashset]); | |
2302 | t.arg1 = SCM_CDR (t.arg1); | |
2303 | } | |
2304 | while (--j && SCM_NIMP (t.arg1)); | |
2305 | i &= mask; | |
2306 | end = i; | |
2307 | } | |
2308 | ||
2309 | /* Search for match */ | |
2310 | do | |
2311 | { | |
2312 | int j = n; | |
2313 | z = SCM_VELTS (proc)[i]; | |
2314 | t.arg1 = arg2; /* list of arguments */ | |
2315 | if (SCM_NIMP (t.arg1)) | |
2316 | do | |
2317 | { | |
2318 | /* More arguments than specifiers => CLASS != ENV */ | |
2319 | if (scm_class_of (SCM_CAR (t.arg1)) != SCM_CAR (z)) | |
2320 | goto next_method; | |
2321 | t.arg1 = SCM_CDR (t.arg1); | |
2322 | z = SCM_CDR (z); | |
2323 | } | |
2324 | while (--j && SCM_NIMP (t.arg1)); | |
2325 | /* Fewer arguments than specifiers => CAR != ENV */ | |
2326 | if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))) | |
2327 | goto next_method; | |
2328 | apply_cmethod: | |
2329 | env = EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (z)), | |
2330 | arg2, | |
2331 | SCM_CMETHOD_ENV (z)); | |
2332 | x = SCM_CMETHOD_CODE (z); | |
2333 | goto cdrxbegin; | |
2334 | next_method: | |
2335 | i = (i + 1) & mask; | |
2336 | } while (i != end); | |
2337 | ||
2338 | z = scm_memoize_method (x, arg2); | |
2339 | goto apply_cmethod; | |
2340 | } | |
73b64342 | 2341 | |
ca4be6ea MD |
2342 | case (SCM_ISYMNUM (SCM_IM_SLOT_REF)): |
2343 | x = SCM_CDR (x); | |
2344 | t.arg1 = EVALCAR (x, env); | |
7d2b68a8 | 2345 | RETURN (SCM_STRUCT_DATA (t.arg1)[SCM_INUM (SCM_CADR (x))]) |
ca4be6ea MD |
2346 | |
2347 | case (SCM_ISYMNUM (SCM_IM_SLOT_SET_X)): | |
2348 | x = SCM_CDR (x); | |
2349 | t.arg1 = EVALCAR (x, env); | |
2350 | x = SCM_CDR (x); | |
2351 | proc = SCM_CDR (x); | |
1f325865 MD |
2352 | SCM_STRUCT_DATA (t.arg1)[SCM_INUM (SCM_CAR (x))] |
2353 | = EVALCAR (proc, env); | |
5623a9b4 | 2354 | RETURN (SCM_UNSPECIFIED) |
ca4be6ea | 2355 | |
73b64342 MD |
2356 | case (SCM_ISYMNUM (SCM_IM_NIL_COND)): |
2357 | proc = SCM_CDR (x); | |
2358 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2359 | { | |
2360 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
2361 | || t.arg1 == scm_nil)) | |
2362 | { | |
2363 | if (SCM_CAR (x) == SCM_UNSPECIFIED) | |
2364 | RETURN (t.arg1); | |
2365 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2366 | goto carloop; | |
2367 | } | |
2368 | proc = SCM_CDR (x); | |
2369 | } | |
2370 | x = proc; | |
2371 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2372 | goto carloop; | |
2373 | ||
2374 | case (SCM_ISYMNUM (SCM_IM_NIL_IFY)): | |
2375 | x = SCM_CDR (x); | |
2376 | RETURN ((SCM_FALSEP (proc = EVALCAR (x, env)) || SCM_NULLP (proc)) | |
2377 | ? scm_nil | |
2378 | : proc) | |
2379 | ||
2380 | case (SCM_ISYMNUM (SCM_IM_T_IFY)): | |
2381 | x = SCM_CDR (x); | |
2382 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) ? scm_t : scm_nil) | |
2383 | ||
2384 | case (SCM_ISYMNUM (SCM_IM_0_COND)): | |
2385 | proc = SCM_CDR (x); | |
2386 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2387 | { | |
2388 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
2389 | || t.arg1 == SCM_INUM0)) | |
2390 | { | |
2391 | if (SCM_CAR (x) == SCM_UNSPECIFIED) | |
2392 | RETURN (t.arg1); | |
2393 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2394 | goto carloop; | |
2395 | } | |
2396 | proc = SCM_CDR (x); | |
2397 | } | |
2398 | x = proc; | |
2399 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2400 | goto carloop; | |
2401 | ||
2402 | case (SCM_ISYMNUM (SCM_IM_0_IFY)): | |
2403 | x = SCM_CDR (x); | |
2404 | RETURN (SCM_FALSEP (proc = EVALCAR (x, env)) | |
2405 | ? SCM_INUM0 | |
2406 | : proc) | |
2407 | ||
2408 | case (SCM_ISYMNUM (SCM_IM_1_IFY)): | |
2409 | x = SCM_CDR (x); | |
2410 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) | |
2411 | ? SCM_MAKINUM (1) | |
2412 | : SCM_INUM0) | |
2413 | ||
2414 | case (SCM_ISYMNUM (SCM_IM_BIND)): | |
2415 | x = SCM_CDR (x); | |
2416 | ||
2417 | t.arg1 = SCM_CAR (x); | |
2418 | arg2 = SCM_CDAR (env); | |
2419 | while (SCM_NIMP (arg2)) | |
2420 | { | |
2421 | proc = SCM_GLOC_VAL (SCM_CAR (t.arg1)); | |
2422 | SCM_SETCDR (SCM_CAR (t.arg1) - 1L, SCM_CAR (arg2)); | |
2423 | SCM_SETCAR (arg2, proc); | |
2424 | t.arg1 = SCM_CDR (t.arg1); | |
2425 | arg2 = SCM_CDR (arg2); | |
2426 | } | |
2427 | t.arg1 = SCM_CAR (x); | |
2428 | scm_dynwinds = scm_acons (t.arg1, SCM_CDAR (env), scm_dynwinds); | |
89efbff4 | 2429 | |
73b64342 MD |
2430 | arg2 = x = SCM_CDR (x); |
2431 | while (SCM_NNULLP (arg2 = SCM_CDR (arg2))) | |
2432 | { | |
2433 | SIDEVAL (SCM_CAR (x), env); | |
2434 | x = arg2; | |
2435 | } | |
2436 | proc = EVALCAR (x, env); | |
2437 | ||
2438 | scm_dynwinds = SCM_CDR (scm_dynwinds); | |
2439 | arg2 = SCM_CDAR (env); | |
2440 | while (SCM_NIMP (arg2)) | |
2441 | { | |
2442 | SCM_SETCDR (SCM_CAR (t.arg1) - 1L, SCM_CAR (arg2)); | |
2443 | t.arg1 = SCM_CDR (t.arg1); | |
2444 | arg2 = SCM_CDR (arg2); | |
2445 | } | |
2446 | ||
2447 | RETURN (proc) | |
2448 | ||
0f2d19dd JB |
2449 | default: |
2450 | goto badfun; | |
2451 | } | |
2452 | ||
2453 | default: | |
2454 | proc = x; | |
2455 | badfun: | |
f5bf2977 | 2456 | /* scm_everr (x, env,...) */ |
523f5266 | 2457 | scm_misc_error (NULL, |
70d63753 | 2458 | "Wrong type to apply: ~S", |
523f5266 | 2459 | scm_listify (proc, SCM_UNDEFINED)); |
0f2d19dd JB |
2460 | case scm_tc7_vector: |
2461 | case scm_tc7_wvect: | |
afe5177e | 2462 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
2463 | case scm_tc7_bvect: |
2464 | case scm_tc7_byvect: | |
2465 | case scm_tc7_svect: | |
2466 | case scm_tc7_ivect: | |
2467 | case scm_tc7_uvect: | |
2468 | case scm_tc7_fvect: | |
2469 | case scm_tc7_dvect: | |
2470 | case scm_tc7_cvect: | |
5c11cc9d | 2471 | #ifdef HAVE_LONG_LONGS |
0f2d19dd | 2472 | case scm_tc7_llvect: |
afe5177e | 2473 | #endif |
0f2d19dd JB |
2474 | #endif |
2475 | case scm_tc7_string: | |
0f2d19dd | 2476 | case scm_tc7_substring: |
0f2d19dd JB |
2477 | case scm_tc7_smob: |
2478 | case scm_tcs_closures: | |
224822be MD |
2479 | #ifdef CCLO |
2480 | case scm_tc7_cclo: | |
2481 | #endif | |
89efbff4 | 2482 | case scm_tc7_pws: |
0f2d19dd JB |
2483 | case scm_tcs_subrs: |
2484 | RETURN (x); | |
2485 | ||
2486 | #ifdef MEMOIZE_LOCALS | |
2487 | case (127 & SCM_ILOC00): | |
2488 | proc = *scm_ilookup (SCM_CAR (x), env); | |
2489 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2490 | #ifndef SCM_RECKLESS |
2491 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2492 | goto checkargs; |
2493 | #endif | |
2494 | #endif | |
2495 | break; | |
2496 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2497 | ||
2498 | ||
2499 | case scm_tcs_cons_gloc: | |
2500 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
aa00bd1e MD |
2501 | if (proc == 0) |
2502 | /* This is a struct implanted in the code, not a gloc. */ | |
2503 | RETURN (x); | |
0f2d19dd | 2504 | SCM_ASRTGO (SCM_NIMP (proc), badfun); |
cf7c17e9 JB |
2505 | #ifndef SCM_RECKLESS |
2506 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2507 | goto checkargs; |
2508 | #endif | |
2509 | #endif | |
2510 | break; | |
2511 | ||
2512 | ||
2513 | case scm_tcs_cons_nimcar: | |
2514 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2515 | { | |
f8769b1d | 2516 | #ifdef USE_THREADS |
26d5b9b4 | 2517 | t.lloc = scm_lookupcar1 (x, env, 1); |
f8769b1d MV |
2518 | if (t.lloc == NULL) |
2519 | { | |
2520 | /* we have lost the race, start again. */ | |
2521 | goto dispatch; | |
2522 | } | |
2523 | proc = *t.lloc; | |
2524 | #else | |
26d5b9b4 | 2525 | proc = *scm_lookupcar (x, env, 1); |
f8769b1d MV |
2526 | #endif |
2527 | ||
0f2d19dd JB |
2528 | if (SCM_IMP (proc)) |
2529 | { | |
2530 | unmemocar (x, env); | |
2531 | goto badfun; | |
2532 | } | |
2533 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2534 | { | |
2535 | unmemocar (x, env); | |
2536 | ||
2537 | handle_a_macro: | |
368bf056 | 2538 | #ifdef DEVAL |
7c354052 MD |
2539 | /* Set a flag during macro expansion so that macro |
2540 | application frames can be deleted from the backtrace. */ | |
2541 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2542 | #endif |
f8769b1d MV |
2543 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2544 | scm_cons (env, scm_listofnull)); | |
2545 | ||
7c354052 MD |
2546 | #ifdef DEVAL |
2547 | SCM_CLEAR_MACROEXP (debug); | |
2548 | #endif | |
0f2d19dd JB |
2549 | switch ((int) (SCM_CAR (proc) >> 16)) |
2550 | { | |
2551 | case 2: | |
2552 | if (scm_ilength (t.arg1) <= 0) | |
2553 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2554 | #ifdef DEVAL |
2555 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2556 | { | |
f8769b1d | 2557 | |
6dbd0af5 MD |
2558 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2559 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2560 | /* Prevent memoizing result of define macro */ | |
2561 | { | |
2562 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2563 | scm_set_source_properties_x (debug.info->e.exp, | |
2564 | scm_source_properties (x)); | |
2565 | } | |
2566 | #endif | |
2567 | SCM_DEFER_INTS; | |
a23afe53 MD |
2568 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2569 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2570 | SCM_ALLOW_INTS; |
2571 | goto dispatch; | |
2572 | } | |
2573 | /* Prevent memoizing of debug info expression. */ | |
6203706f MD |
2574 | debug.info->e.exp = scm_cons_source (debug.info->e.exp, |
2575 | SCM_CAR (x), | |
2576 | SCM_CDR (x)); | |
6dbd0af5 | 2577 | #endif |
0f2d19dd | 2578 | SCM_DEFER_INTS; |
a23afe53 MD |
2579 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2580 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2581 | SCM_ALLOW_INTS; |
6dbd0af5 | 2582 | goto loopnoap; |
0f2d19dd JB |
2583 | case 1: |
2584 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2585 | goto loopnoap; |
0f2d19dd JB |
2586 | case 0: |
2587 | RETURN (t.arg1); | |
2588 | } | |
2589 | } | |
2590 | } | |
2591 | else | |
2592 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2593 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2594 | #ifndef SCM_RECKLESS |
2595 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2596 | checkargs: |
2597 | #endif | |
2598 | if (SCM_CLOSUREP (proc)) | |
2599 | { | |
2600 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2601 | t.arg1 = SCM_CDR (x); | |
2602 | while (SCM_NIMP (arg2)) | |
2603 | { | |
2604 | if (SCM_NCONSP (arg2)) | |
2605 | goto evapply; | |
2606 | if (SCM_IMP (t.arg1)) | |
2607 | goto umwrongnumargs; | |
2608 | arg2 = SCM_CDR (arg2); | |
2609 | t.arg1 = SCM_CDR (t.arg1); | |
2610 | } | |
2611 | if (SCM_NNULLP (t.arg1)) | |
2612 | goto umwrongnumargs; | |
2613 | } | |
2614 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2615 | goto handle_a_macro; | |
2616 | #endif | |
2617 | } | |
2618 | ||
2619 | ||
6dbd0af5 MD |
2620 | evapply: |
2621 | PREP_APPLY (proc, SCM_EOL); | |
2622 | if (SCM_NULLP (SCM_CDR (x))) { | |
2623 | ENTER_APPLY; | |
89efbff4 | 2624 | evap0: |
0f2d19dd JB |
2625 | switch (SCM_TYP7 (proc)) |
2626 | { /* no arguments given */ | |
2627 | case scm_tc7_subr_0: | |
2628 | RETURN (SCM_SUBRF (proc) ()); | |
2629 | case scm_tc7_subr_1o: | |
2630 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2631 | case scm_tc7_lsubr: | |
2632 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2633 | case scm_tc7_rpsubr: | |
2634 | RETURN (SCM_BOOL_T); | |
2635 | case scm_tc7_asubr: | |
2636 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2637 | #ifdef CCLO |
0f2d19dd JB |
2638 | case scm_tc7_cclo: |
2639 | t.arg1 = proc; | |
2640 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2641 | #ifdef DEVAL |
2642 | debug.info->a.proc = proc; | |
2643 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2644 | #endif | |
0f2d19dd | 2645 | goto evap1; |
6dbd0af5 | 2646 | #endif |
89efbff4 MD |
2647 | case scm_tc7_pws: |
2648 | proc = SCM_PROCEDURE (proc); | |
2649 | #ifdef DEVAL | |
2650 | debug.info->a.proc = proc; | |
2651 | #endif | |
2652 | goto evap0; | |
0f2d19dd JB |
2653 | case scm_tcs_closures: |
2654 | x = SCM_CODE (proc); | |
e2806c10 | 2655 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2656 | goto cdrxbegin; |
da7f71d7 | 2657 | case scm_tcs_cons_gloc: |
195847fa MD |
2658 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2659 | { | |
2660 | x = SCM_ENTITY_PROCEDURE (proc); | |
2661 | arg2 = SCM_EOL; | |
2662 | goto type_dispatch; | |
2663 | } | |
2664 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2665 | goto badfun; |
2666 | else | |
da7f71d7 | 2667 | { |
195847fa MD |
2668 | t.arg1 = proc; |
2669 | proc = (SCM_I_ENTITYP (proc) | |
2670 | ? SCM_ENTITY_PROCEDURE (proc) | |
2671 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 | 2672 | #ifdef DEVAL |
195847fa MD |
2673 | debug.info->a.proc = proc; |
2674 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
da7f71d7 | 2675 | #endif |
195847fa MD |
2676 | if (SCM_NIMP (proc)) |
2677 | goto evap1; | |
2678 | else | |
2679 | goto badfun; | |
da7f71d7 | 2680 | } |
0f2d19dd JB |
2681 | case scm_tc7_contin: |
2682 | case scm_tc7_subr_1: | |
2683 | case scm_tc7_subr_2: | |
2684 | case scm_tc7_subr_2o: | |
2685 | case scm_tc7_cxr: | |
2686 | case scm_tc7_subr_3: | |
2687 | case scm_tc7_lsubr_2: | |
2688 | umwrongnumargs: | |
2689 | unmemocar (x, env); | |
2690 | wrongnumargs: | |
f5bf2977 GH |
2691 | /* scm_everr (x, env,...) */ |
2692 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2693 | default: |
2694 | /* handle macros here */ | |
2695 | goto badfun; | |
2696 | } | |
6dbd0af5 | 2697 | } |
0f2d19dd JB |
2698 | |
2699 | /* must handle macros by here */ | |
2700 | x = SCM_CDR (x); | |
cf7c17e9 | 2701 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2702 | if (SCM_IMP (x)) |
2703 | goto wrongnumargs; | |
680ed4a8 MD |
2704 | else if (SCM_CONSP (x)) |
2705 | { | |
2706 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2707 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2708 | else |
2709 | t.arg1 = EVALCELLCAR (x, env); | |
2710 | } | |
2711 | else if (SCM_TYP3 (x) == 1) | |
2712 | { | |
2713 | if ((t.arg1 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2714 | t.arg1 = SCM_CAR (x); /* struct planted in code */ | |
2715 | } | |
2716 | else | |
2717 | goto wrongnumargs; | |
2718 | #else | |
0f2d19dd | 2719 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2720 | #endif |
6dbd0af5 MD |
2721 | #ifdef DEVAL |
2722 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2723 | #endif | |
0f2d19dd JB |
2724 | x = SCM_CDR (x); |
2725 | if (SCM_NULLP (x)) | |
2726 | { | |
6dbd0af5 | 2727 | ENTER_APPLY; |
0f2d19dd JB |
2728 | evap1: |
2729 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2730 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2731 | case scm_tc7_subr_2o: |
2732 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2733 | case scm_tc7_subr_1: | |
2734 | case scm_tc7_subr_1o: | |
2735 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2736 | case scm_tc7_cxr: | |
2737 | #ifdef SCM_FLOATS | |
2738 | if (SCM_SUBRF (proc)) | |
2739 | { | |
2740 | if (SCM_INUMP (t.arg1)) | |
2741 | { | |
2742 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2743 | 0.0)); | |
2744 | } | |
2745 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2746 | if (SCM_REALP (t.arg1)) | |
2747 | { | |
2748 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2749 | } | |
2750 | #ifdef SCM_BIGDIG | |
2751 | if (SCM_BIGP (t.arg1)) | |
2752 | { | |
2753 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2754 | } | |
2755 | #endif | |
2756 | floerr: | |
9de33deb MD |
2757 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), t.arg1, |
2758 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd JB |
2759 | } |
2760 | #endif | |
2761 | proc = (SCM) SCM_SNAME (proc); | |
2762 | { | |
2763 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2764 | while ('c' != *--chrs) | |
2765 | { | |
0c95b57d | 2766 | SCM_ASSERT (SCM_CONSP (t.arg1), |
0f2d19dd JB |
2767 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); |
2768 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2769 | } | |
2770 | RETURN (t.arg1); | |
2771 | } | |
2772 | case scm_tc7_rpsubr: | |
2773 | RETURN (SCM_BOOL_T); | |
2774 | case scm_tc7_asubr: | |
2775 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2776 | case scm_tc7_lsubr: | |
2777 | #ifdef DEVAL | |
6dbd0af5 | 2778 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2779 | #else |
2780 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2781 | #endif | |
6dbd0af5 | 2782 | #ifdef CCLO |
0f2d19dd JB |
2783 | case scm_tc7_cclo: |
2784 | arg2 = t.arg1; | |
2785 | t.arg1 = proc; | |
2786 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2787 | #ifdef DEVAL |
2788 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2789 | debug.info->a.proc = proc; | |
2790 | #endif | |
0f2d19dd | 2791 | goto evap2; |
6dbd0af5 | 2792 | #endif |
89efbff4 MD |
2793 | case scm_tc7_pws: |
2794 | proc = SCM_PROCEDURE (proc); | |
2795 | #ifdef DEVAL | |
2796 | debug.info->a.proc = proc; | |
2797 | #endif | |
2798 | goto evap1; | |
0f2d19dd | 2799 | case scm_tcs_closures: |
195847fa | 2800 | /* clos1: */ |
0f2d19dd JB |
2801 | x = SCM_CODE (proc); |
2802 | #ifdef DEVAL | |
e2806c10 | 2803 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2804 | #else |
e2806c10 | 2805 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2806 | #endif |
2807 | goto cdrxbegin; | |
65e41721 MD |
2808 | case scm_tc7_contin: |
2809 | scm_call_continuation (proc, t.arg1); | |
0c32d76c | 2810 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2811 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2812 | { | |
195847fa | 2813 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2814 | #ifdef DEVAL |
2815 | arg2 = debug.info->a.args; | |
2816 | #else | |
2817 | arg2 = scm_cons (t.arg1, SCM_EOL); | |
2818 | #endif | |
f3d2630a MD |
2819 | goto type_dispatch; |
2820 | } | |
2821 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2822 | goto badfun; |
2823 | else | |
0c32d76c | 2824 | { |
195847fa MD |
2825 | arg2 = t.arg1; |
2826 | t.arg1 = proc; | |
2827 | proc = (SCM_I_ENTITYP (proc) | |
2828 | ? SCM_ENTITY_PROCEDURE (proc) | |
2829 | : SCM_OPERATOR_PROCEDURE (proc)); | |
0c32d76c | 2830 | #ifdef DEVAL |
195847fa MD |
2831 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); |
2832 | debug.info->a.proc = proc; | |
0c32d76c | 2833 | #endif |
195847fa MD |
2834 | if (SCM_NIMP (proc)) |
2835 | goto evap2; | |
2836 | else | |
2837 | goto badfun; | |
0c32d76c | 2838 | } |
0f2d19dd JB |
2839 | case scm_tc7_subr_2: |
2840 | case scm_tc7_subr_0: | |
2841 | case scm_tc7_subr_3: | |
2842 | case scm_tc7_lsubr_2: | |
2843 | goto wrongnumargs; | |
2844 | default: | |
2845 | goto badfun; | |
2846 | } | |
2847 | } | |
cf7c17e9 | 2848 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2849 | if (SCM_IMP (x)) |
2850 | goto wrongnumargs; | |
680ed4a8 MD |
2851 | else if (SCM_CONSP (x)) |
2852 | { | |
2853 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2854 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2855 | else |
2856 | arg2 = EVALCELLCAR (x, env); | |
2857 | } | |
2858 | else if (SCM_TYP3 (x) == 1) | |
2859 | { | |
2860 | if ((arg2 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2861 | arg2 = SCM_CAR (x); /* struct planted in code */ | |
2862 | } | |
2863 | else | |
2864 | goto wrongnumargs; | |
2865 | #else | |
2866 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2867 | #endif |
2868 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2869 | #ifdef DEVAL |
2870 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2871 | #endif | |
0f2d19dd JB |
2872 | x = SCM_CDR (x); |
2873 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2874 | ENTER_APPLY; |
0f2d19dd JB |
2875 | #ifdef CCLO |
2876 | evap2: | |
2877 | #endif | |
6dbd0af5 MD |
2878 | switch (SCM_TYP7 (proc)) |
2879 | { /* have two arguments */ | |
2880 | case scm_tc7_subr_2: | |
2881 | case scm_tc7_subr_2o: | |
2882 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2883 | case scm_tc7_lsubr: | |
0f2d19dd | 2884 | #ifdef DEVAL |
6dbd0af5 MD |
2885 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2886 | #else | |
2887 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2888 | #endif |
6dbd0af5 MD |
2889 | case scm_tc7_lsubr_2: |
2890 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2891 | case scm_tc7_rpsubr: | |
2892 | case scm_tc7_asubr: | |
2893 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2894 | #ifdef CCLO | |
2895 | cclon: | |
2896 | case scm_tc7_cclo: | |
0f2d19dd | 2897 | #ifdef DEVAL |
195847fa MD |
2898 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2899 | scm_cons (proc, debug.info->a.args), | |
2900 | SCM_EOL)); | |
0f2d19dd | 2901 | #else |
195847fa MD |
2902 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2903 | scm_cons2 (proc, t.arg1, | |
2904 | scm_cons (arg2, | |
2905 | scm_eval_args (x, | |
2906 | env, | |
2907 | proc))), | |
2908 | SCM_EOL)); | |
0f2d19dd | 2909 | #endif |
6dbd0af5 MD |
2910 | /* case scm_tc7_cclo: |
2911 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2912 | arg2 = t.arg1; | |
2913 | t.arg1 = proc; | |
2914 | proc = SCM_CCLO_SUBR(proc); | |
2915 | goto evap3; */ | |
2916 | #endif | |
89efbff4 MD |
2917 | case scm_tc7_pws: |
2918 | proc = SCM_PROCEDURE (proc); | |
2919 | #ifdef DEVAL | |
2920 | debug.info->a.proc = proc; | |
2921 | #endif | |
2922 | goto evap2; | |
0c32d76c | 2923 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2924 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2925 | { | |
195847fa | 2926 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2927 | #ifdef DEVAL |
2928 | arg2 = debug.info->a.args; | |
2929 | #else | |
2930 | arg2 = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2931 | #endif | |
f3d2630a MD |
2932 | goto type_dispatch; |
2933 | } | |
2934 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2935 | goto badfun; |
2936 | else | |
0c32d76c | 2937 | { |
195847fa | 2938 | operatorn: |
0c32d76c | 2939 | #ifdef DEVAL |
195847fa MD |
2940 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) |
2941 | ? SCM_ENTITY_PROCEDURE (proc) | |
2942 | : SCM_OPERATOR_PROCEDURE (proc), | |
2943 | scm_cons (proc, debug.info->a.args), | |
2944 | SCM_EOL)); | |
2945 | #else | |
2946 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) | |
2947 | ? SCM_ENTITY_PROCEDURE (proc) | |
2948 | : SCM_OPERATOR_PROCEDURE (proc), | |
2949 | scm_cons2 (proc, t.arg1, | |
2950 | scm_cons (arg2, | |
2951 | scm_eval_args (x, | |
2952 | env, | |
2953 | proc))), | |
2954 | SCM_EOL)); | |
2955 | #endif | |
0c32d76c | 2956 | } |
6dbd0af5 MD |
2957 | case scm_tc7_subr_0: |
2958 | case scm_tc7_cxr: | |
2959 | case scm_tc7_subr_1o: | |
2960 | case scm_tc7_subr_1: | |
2961 | case scm_tc7_subr_3: | |
2962 | case scm_tc7_contin: | |
2963 | goto wrongnumargs; | |
2964 | default: | |
2965 | goto badfun; | |
2966 | case scm_tcs_closures: | |
195847fa | 2967 | /* clos2: */ |
0f2d19dd | 2968 | #ifdef DEVAL |
da7f71d7 MD |
2969 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2970 | debug.info->a.args, | |
2971 | SCM_ENV (proc)); | |
0f2d19dd | 2972 | #else |
da7f71d7 MD |
2973 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2974 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2975 | #endif |
6dbd0af5 MD |
2976 | x = SCM_CODE (proc); |
2977 | goto cdrxbegin; | |
2978 | } | |
0f2d19dd | 2979 | } |
cf7c17e9 | 2980 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2981 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2982 | goto wrongnumargs; | |
2983 | #endif | |
0f2d19dd | 2984 | #ifdef DEVAL |
6dbd0af5 | 2985 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2986 | scm_deval_args (x, env, proc, |
2987 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2988 | #endif |
6dbd0af5 | 2989 | ENTER_APPLY; |
89efbff4 | 2990 | evap3: |
6dbd0af5 MD |
2991 | switch (SCM_TYP7 (proc)) |
2992 | { /* have 3 or more arguments */ | |
0f2d19dd | 2993 | #ifdef DEVAL |
6dbd0af5 MD |
2994 | case scm_tc7_subr_3: |
2995 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2996 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2997 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 2998 | case scm_tc7_asubr: |
399dedcc MD |
2999 | #ifdef BUILTIN_RPASUBR |
3000 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
3001 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
3002 | do |
3003 | { | |
3004 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
3005 | arg2 = SCM_CDR (arg2); | |
3006 | } | |
3007 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
3008 | RETURN (t.arg1) |
3009 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3010 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3011 | #ifdef BUILTIN_RPASUBR |
3012 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3013 | RETURN (SCM_BOOL_F) | |
3014 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
3015 | do |
3016 | { | |
3017 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
3018 | RETURN (SCM_BOOL_F) | |
3019 | arg2 = SCM_CAR (t.arg1); | |
3020 | t.arg1 = SCM_CDR (t.arg1); | |
3021 | } | |
3022 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
3023 | RETURN (SCM_BOOL_T) |
3024 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
3025 | RETURN (SCM_APPLY (proc, t.arg1, |
3026 | scm_acons (arg2, | |
3027 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
3028 | SCM_EOL))) | |
71d3aa6d | 3029 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 3030 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
3031 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
3032 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
3033 | case scm_tc7_lsubr: |
3034 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 3035 | #ifdef CCLO |
6dbd0af5 MD |
3036 | case scm_tc7_cclo: |
3037 | goto cclon; | |
0f2d19dd | 3038 | #endif |
89efbff4 MD |
3039 | case scm_tc7_pws: |
3040 | proc = SCM_PROCEDURE (proc); | |
3041 | debug.info->a.proc = proc; | |
3042 | goto evap3; | |
6dbd0af5 | 3043 | case scm_tcs_closures: |
b7ff98dd | 3044 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 3045 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
3046 | debug.info->a.args, |
3047 | SCM_ENV (proc)); | |
3048 | x = SCM_CODE (proc); | |
3049 | goto cdrxbegin; | |
3050 | #else /* DEVAL */ | |
3051 | case scm_tc7_subr_3: | |
3052 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
3053 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
3054 | case scm_tc7_asubr: | |
399dedcc | 3055 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
3056 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
3057 | do | |
3058 | { | |
3059 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
3060 | x = SCM_CDR(x); | |
3061 | } | |
3062 | while (SCM_NIMP (x)); | |
399dedcc MD |
3063 | RETURN (t.arg1) |
3064 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3065 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3066 | #ifdef BUILTIN_RPASUBR |
3067 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3068 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
3069 | do |
3070 | { | |
3071 | t.arg1 = EVALCAR (x, env); | |
3072 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
3073 | RETURN (SCM_BOOL_F) | |
3074 | arg2 = t.arg1; | |
3075 | x = SCM_CDR (x); | |
3076 | } | |
3077 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
3078 | RETURN (SCM_BOOL_T) |
3079 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 3080 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
3081 | scm_acons (arg2, |
3082 | scm_eval_args (x, env, proc), | |
3083 | SCM_EOL))); | |
71d3aa6d | 3084 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 3085 | case scm_tc7_lsubr_2: |
680ed4a8 | 3086 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 3087 | case scm_tc7_lsubr: |
680ed4a8 MD |
3088 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
3089 | arg2, | |
3090 | scm_eval_args (x, env, proc)))); | |
0f2d19dd | 3091 | #ifdef CCLO |
6dbd0af5 MD |
3092 | case scm_tc7_cclo: |
3093 | goto cclon; | |
0f2d19dd | 3094 | #endif |
89efbff4 MD |
3095 | case scm_tc7_pws: |
3096 | proc = SCM_PROCEDURE (proc); | |
3097 | goto evap3; | |
6dbd0af5 MD |
3098 | case scm_tcs_closures: |
3099 | #ifdef DEVAL | |
b7ff98dd | 3100 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 3101 | #endif |
e2806c10 | 3102 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
3103 | scm_cons2 (t.arg1, |
3104 | arg2, | |
3105 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
3106 | SCM_ENV (proc)); |
3107 | x = SCM_CODE (proc); | |
3108 | goto cdrxbegin; | |
0f2d19dd | 3109 | #endif /* DEVAL */ |
0c32d76c | 3110 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3111 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3112 | { | |
3113 | #ifdef DEVAL | |
3114 | arg2 = debug.info->a.args; | |
3115 | #else | |
3116 | arg2 = scm_cons2 (t.arg1, arg2, scm_eval_args (x, env, proc)); | |
3117 | #endif | |
195847fa | 3118 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
3119 | goto type_dispatch; |
3120 | } | |
3121 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3122 | goto badfun; |
3123 | else | |
195847fa | 3124 | goto operatorn; |
6dbd0af5 MD |
3125 | case scm_tc7_subr_2: |
3126 | case scm_tc7_subr_1o: | |
3127 | case scm_tc7_subr_2o: | |
3128 | case scm_tc7_subr_0: | |
3129 | case scm_tc7_cxr: | |
3130 | case scm_tc7_subr_1: | |
3131 | case scm_tc7_contin: | |
3132 | goto wrongnumargs; | |
3133 | default: | |
3134 | goto badfun; | |
3135 | } | |
0f2d19dd JB |
3136 | } |
3137 | #ifdef DEVAL | |
6dbd0af5 | 3138 | exit: |
b6d75948 | 3139 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3140 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3141 | { |
b7ff98dd MD |
3142 | SCM_CLEAR_TRACED_FRAME (debug); |
3143 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3144 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3145 | else |
3146 | { | |
3147 | scm_make_cont (&t.arg1); | |
ca6ef71a | 3148 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
3149 | { |
3150 | proc = SCM_THROW_VALUE (t.arg1); | |
3151 | goto ret; | |
3152 | } | |
3153 | } | |
2f0d1375 | 3154 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3155 | } |
3156 | ret: | |
1646d37b | 3157 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3158 | return proc; |
3159 | #endif | |
3160 | } | |
3161 | ||
6dbd0af5 MD |
3162 | |
3163 | /* SECTION: This code is compiled once. | |
3164 | */ | |
3165 | ||
0f2d19dd JB |
3166 | #ifndef DEVAL |
3167 | ||
82a2622a | 3168 | /* This code processes the arguments to apply: |
b145c172 JB |
3169 | |
3170 | (apply PROC ARG1 ... ARGS) | |
3171 | ||
82a2622a JB |
3172 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
3173 | ... arguments onto the front of ARGS, and returns the resulting | |
3174 | list. Note that ARGS is a list; thus, the argument to this | |
3175 | function is a list whose last element is a list. | |
3176 | ||
3177 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
3178 | result. apply:nconc2last takes care of building the list of |
3179 | arguments, given (ARG1 ... ARGS). | |
3180 | ||
82a2622a JB |
3181 | Rather than do new consing, apply:nconc2last destroys its argument. |
3182 | On that topic, this code came into my care with the following | |
3183 | beautifully cryptic comment on that topic: "This will only screw | |
3184 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
3185 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 3186 | |
3b3b36dd | 3187 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
1bbd0b84 GB |
3188 | (SCM lst), |
3189 | "") | |
3190 | #define FUNC_NAME s_scm_nconc2last | |
0f2d19dd JB |
3191 | { |
3192 | SCM *lloc; | |
c1bfcf60 | 3193 | SCM_VALIDATE_NONEMPTYLIST (1,lst); |
0f2d19dd JB |
3194 | lloc = &lst; |
3195 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 3196 | lloc = SCM_CDRLOC (*lloc); |
1bbd0b84 | 3197 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
3198 | *lloc = SCM_CAR (*lloc); |
3199 | return lst; | |
3200 | } | |
1bbd0b84 | 3201 | #undef FUNC_NAME |
0f2d19dd JB |
3202 | |
3203 | #endif /* !DEVAL */ | |
3204 | ||
6dbd0af5 MD |
3205 | |
3206 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
3207 | * It is compiled twice. | |
3208 | */ | |
3209 | ||
0f2d19dd | 3210 | #if 0 |
1cc91f1b | 3211 | |
0f2d19dd | 3212 | SCM |
6e8d25a6 | 3213 | scm_apply (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3214 | {} |
3215 | #endif | |
3216 | ||
3217 | #if 0 | |
1cc91f1b | 3218 | |
0f2d19dd | 3219 | SCM |
6e8d25a6 GB |
3220 | scm_dapply (SCM proc, SCM arg1, SCM args) |
3221 | { /* empty */ } | |
0f2d19dd JB |
3222 | #endif |
3223 | ||
1cc91f1b | 3224 | |
82a2622a JB |
3225 | /* Apply a function to a list of arguments. |
3226 | ||
3227 | This function is exported to the Scheme level as taking two | |
3228 | required arguments and a tail argument, as if it were: | |
3229 | (lambda (proc arg1 . args) ...) | |
3230 | Thus, if you just have a list of arguments to pass to a procedure, | |
3231 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
3232 | args, pass the first as ARG1, then cons any remaining fixed args | |
3233 | onto the front of your argument list, and pass that as ARGS. */ | |
3234 | ||
0f2d19dd | 3235 | SCM |
1bbd0b84 | 3236 | SCM_APPLY (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3237 | { |
3238 | #ifdef DEBUG_EXTENSIONS | |
3239 | #ifdef DEVAL | |
6dbd0af5 | 3240 | scm_debug_frame debug; |
c0ab1b8d | 3241 | scm_debug_info debug_vect_body; |
1646d37b | 3242 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 3243 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 3244 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
3245 | debug.vect[0].a.proc = proc; |
3246 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 3247 | scm_last_debug_frame = &debug; |
0f2d19dd | 3248 | #else |
b7ff98dd | 3249 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
3250 | return scm_dapply (proc, arg1, args); |
3251 | #endif | |
3252 | #endif | |
3253 | ||
3254 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
3255 | |
3256 | /* If ARGS is the empty list, then we're calling apply with only two | |
3257 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
3258 | the case, futz with things so that ARG1 is the first argument to | |
3259 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
3260 | rest. |
3261 | ||
3262 | Setting the debug apply frame args this way is pretty messy. | |
3263 | Perhaps we should store arg1 and args directly in the frame as | |
3264 | received, and let scm_frame_arguments unpack them, because that's | |
3265 | a relatively rare operation. This works for now; if the Guile | |
3266 | developer archives are still around, see Mikael's post of | |
3267 | 11-Apr-97. */ | |
0f2d19dd JB |
3268 | if (SCM_NULLP (args)) |
3269 | { | |
3270 | if (SCM_NULLP (arg1)) | |
30000774 JB |
3271 | { |
3272 | arg1 = SCM_UNDEFINED; | |
3273 | #ifdef DEVAL | |
3274 | debug.vect[0].a.args = SCM_EOL; | |
3275 | #endif | |
3276 | } | |
0f2d19dd JB |
3277 | else |
3278 | { | |
30000774 JB |
3279 | #ifdef DEVAL |
3280 | debug.vect[0].a.args = arg1; | |
3281 | #endif | |
0f2d19dd JB |
3282 | args = SCM_CDR (arg1); |
3283 | arg1 = SCM_CAR (arg1); | |
3284 | } | |
3285 | } | |
3286 | else | |
3287 | { | |
0c95b57d | 3288 | /* SCM_ASRTGO(SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 3289 | args = scm_nconc2last (args); |
30000774 JB |
3290 | #ifdef DEVAL |
3291 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3292 | #endif | |
0f2d19dd | 3293 | } |
0f2d19dd | 3294 | #ifdef DEVAL |
b6d75948 | 3295 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
3296 | { |
3297 | SCM tmp; | |
b7ff98dd | 3298 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 3299 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3300 | else |
3301 | { | |
3302 | scm_make_cont (&tmp); | |
ca6ef71a | 3303 | if (setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
3304 | goto entap; |
3305 | } | |
2f0d1375 | 3306 | scm_ithrow (scm_sym_enter_frame, scm_cons (tmp, SCM_EOL), 0); |
6dbd0af5 MD |
3307 | } |
3308 | entap: | |
3309 | ENTER_APPLY; | |
3310 | #endif | |
3311 | #ifdef CCLO | |
3312 | tail: | |
0f2d19dd JB |
3313 | #endif |
3314 | switch (SCM_TYP7 (proc)) | |
3315 | { | |
3316 | case scm_tc7_subr_2o: | |
3317 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
3318 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3319 | case scm_tc7_subr_2: | |
269861c7 MD |
3320 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
3321 | wrongnumargs); | |
0f2d19dd JB |
3322 | args = SCM_CAR (args); |
3323 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3324 | case scm_tc7_subr_0: | |
3325 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
3326 | RETURN (SCM_SUBRF (proc) ()) | |
3327 | case scm_tc7_subr_1: | |
3328 | case scm_tc7_subr_1o: | |
3329 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3330 | RETURN (SCM_SUBRF (proc) (arg1)) | |
3331 | case scm_tc7_cxr: | |
3332 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3333 | #ifdef SCM_FLOATS | |
3334 | if (SCM_SUBRF (proc)) | |
3335 | { | |
6dbd0af5 MD |
3336 | if (SCM_INUMP (arg1)) |
3337 | { | |
3338 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
3339 | } | |
0f2d19dd | 3340 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
3341 | if (SCM_REALP (arg1)) |
3342 | { | |
3343 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
3344 | } | |
0f2d19dd | 3345 | #ifdef SCM_BIGDIG |
26d5b9b4 | 3346 | if (SCM_BIGP (arg1)) |
0f2d19dd JB |
3347 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) |
3348 | #endif | |
3349 | floerr: | |
9de33deb MD |
3350 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), arg1, |
3351 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd JB |
3352 | } |
3353 | #endif | |
3354 | proc = (SCM) SCM_SNAME (proc); | |
3355 | { | |
3356 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
3357 | while ('c' != *--chrs) | |
3358 | { | |
0c95b57d | 3359 | SCM_ASSERT (SCM_CONSP (arg1), |
0f2d19dd JB |
3360 | arg1, SCM_ARG1, SCM_CHARS (proc)); |
3361 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
3362 | } | |
3363 | RETURN (arg1) | |
3364 | } | |
3365 | case scm_tc7_subr_3: | |
3366 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
3367 | case scm_tc7_lsubr: | |
3368 | #ifdef DEVAL | |
6dbd0af5 | 3369 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
3370 | #else |
3371 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
3372 | #endif | |
3373 | case scm_tc7_lsubr_2: | |
0c95b57d | 3374 | SCM_ASRTGO (SCM_CONSP (args), wrongnumargs); |
0f2d19dd JB |
3375 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) |
3376 | case scm_tc7_asubr: | |
3377 | if (SCM_NULLP (args)) | |
3378 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
3379 | while (SCM_NIMP (args)) | |
3380 | { | |
3381 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3382 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
3383 | args = SCM_CDR (args); | |
3384 | } | |
3385 | RETURN (arg1); | |
3386 | case scm_tc7_rpsubr: | |
3387 | if (SCM_NULLP (args)) | |
3388 | RETURN (SCM_BOOL_T); | |
3389 | while (SCM_NIMP (args)) | |
3390 | { | |
3391 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3392 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
3393 | RETURN (SCM_BOOL_F); | |
3394 | arg1 = SCM_CAR (args); | |
3395 | args = SCM_CDR (args); | |
3396 | } | |
3397 | RETURN (SCM_BOOL_T); | |
3398 | case scm_tcs_closures: | |
3399 | #ifdef DEVAL | |
6dbd0af5 | 3400 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
3401 | #else |
3402 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3403 | #endif | |
cf7c17e9 | 3404 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3405 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3406 | goto wrongnumargs; | |
3407 | #endif | |
1609038c MD |
3408 | |
3409 | /* Copy argument list */ | |
3410 | if (SCM_IMP (arg1)) | |
3411 | args = arg1; | |
3412 | else | |
3413 | { | |
3414 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
cabe682c | 3415 | while (arg1 = SCM_CDR (arg1), SCM_CONSP (arg1)) |
1609038c MD |
3416 | { |
3417 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3418 | SCM_UNSPECIFIED)); | |
3419 | tl = SCM_CDR (tl); | |
3420 | } | |
3421 | SCM_SETCDR (tl, arg1); | |
3422 | } | |
3423 | ||
3424 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
2ddb0920 | 3425 | proc = SCM_CDR (SCM_CODE (proc)); |
e791c18f MD |
3426 | again: |
3427 | arg1 = proc; | |
3428 | while (SCM_NNULLP (arg1 = SCM_CDR (arg1))) | |
2ddb0920 MD |
3429 | { |
3430 | if (SCM_IMP (SCM_CAR (proc))) | |
3431 | { | |
3432 | if (SCM_ISYMP (SCM_CAR (proc))) | |
3433 | { | |
3434 | proc = scm_m_expand_body (proc, args); | |
e791c18f | 3435 | goto again; |
2ddb0920 | 3436 | } |
2ddb0920 MD |
3437 | } |
3438 | else | |
e791c18f MD |
3439 | SCM_CEVAL (SCM_CAR (proc), args); |
3440 | proc = arg1; | |
2ddb0920 | 3441 | } |
e791c18f | 3442 | RETURN (EVALCAR (proc, args)); |
0f2d19dd JB |
3443 | case scm_tc7_contin: |
3444 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3445 | scm_call_continuation (proc, arg1); | |
3446 | #ifdef CCLO | |
3447 | case scm_tc7_cclo: | |
3448 | #ifdef DEVAL | |
6dbd0af5 MD |
3449 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3450 | arg1 = proc; | |
3451 | proc = SCM_CCLO_SUBR (proc); | |
3452 | debug.vect[0].a.proc = proc; | |
3453 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3454 | #else |
3455 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3456 | arg1 = proc; |
3457 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3458 | #endif |
0f2d19dd JB |
3459 | goto tail; |
3460 | #endif | |
89efbff4 MD |
3461 | case scm_tc7_pws: |
3462 | proc = SCM_PROCEDURE (proc); | |
3463 | #ifdef DEVAL | |
3464 | debug.vect[0].a.proc = proc; | |
3465 | #endif | |
3466 | goto tail; | |
0c32d76c | 3467 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3468 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3469 | { | |
3470 | #ifdef DEVAL | |
3471 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3472 | #else | |
3473 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3474 | #endif | |
195847fa | 3475 | RETURN (scm_apply_generic (proc, args)); |
f3d2630a MD |
3476 | } |
3477 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3478 | goto badproc; |
3479 | else | |
da7f71d7 MD |
3480 | { |
3481 | #ifdef DEVAL | |
3482 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3483 | #else | |
3484 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3485 | #endif | |
3486 | arg1 = proc; | |
195847fa MD |
3487 | proc = (SCM_I_ENTITYP (proc) |
3488 | ? SCM_ENTITY_PROCEDURE (proc) | |
3489 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 MD |
3490 | #ifdef DEVAL |
3491 | debug.vect[0].a.proc = proc; | |
3492 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3493 | #endif | |
195847fa MD |
3494 | if (SCM_NIMP (proc)) |
3495 | goto tail; | |
3496 | else | |
3497 | goto badproc; | |
da7f71d7 | 3498 | } |
0f2d19dd | 3499 | wrongnumargs: |
f5bf2977 | 3500 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3501 | default: |
3502 | badproc: | |
3503 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3504 | RETURN (arg1); | |
3505 | } | |
3506 | #ifdef DEVAL | |
6dbd0af5 | 3507 | exit: |
b6d75948 | 3508 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3509 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3510 | { |
b7ff98dd MD |
3511 | SCM_CLEAR_TRACED_FRAME (debug); |
3512 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3513 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3514 | else |
3515 | { | |
3516 | scm_make_cont (&arg1); | |
ca6ef71a | 3517 | if (setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
3518 | { |
3519 | proc = SCM_THROW_VALUE (arg1); | |
3520 | goto ret; | |
3521 | } | |
3522 | } | |
2f0d1375 | 3523 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3524 | } |
3525 | ret: | |
1646d37b | 3526 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3527 | return proc; |
3528 | #endif | |
3529 | } | |
3530 | ||
6dbd0af5 MD |
3531 | |
3532 | /* SECTION: The rest of this file is only read once. | |
3533 | */ | |
3534 | ||
0f2d19dd JB |
3535 | #ifndef DEVAL |
3536 | ||
d9c393f5 JB |
3537 | /* Typechecking for multi-argument MAP and FOR-EACH. |
3538 | ||
47c3f06d | 3539 | Verify that each element of the vector ARGV, except for the first, |
d9c393f5 | 3540 | is a proper list whose length is LEN. Attribute errors to WHO, |
47c3f06d | 3541 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ |
d9c393f5 | 3542 | static inline void |
47c3f06d MD |
3543 | check_map_args (SCM argv, |
3544 | long len, | |
3545 | SCM gf, | |
3546 | SCM proc, | |
3547 | SCM args, | |
3548 | const char *who) | |
d9c393f5 | 3549 | { |
47c3f06d | 3550 | SCM *ve = SCM_VELTS (argv); |
d9c393f5 JB |
3551 | int i; |
3552 | ||
47c3f06d | 3553 | for (i = SCM_LENGTH (argv) - 1; i >= 1; i--) |
d9c393f5 JB |
3554 | { |
3555 | int elt_len = scm_ilength (ve[i]); | |
3556 | ||
3557 | if (elt_len < 0) | |
47c3f06d MD |
3558 | { |
3559 | if (gf) | |
3560 | scm_apply_generic (gf, scm_cons (proc, args)); | |
3561 | else | |
3562 | scm_wrong_type_arg (who, i + 2, ve[i]); | |
3563 | } | |
d9c393f5 JB |
3564 | |
3565 | if (elt_len != len) | |
3566 | scm_out_of_range (who, ve[i]); | |
3567 | } | |
3568 | ||
47c3f06d | 3569 | scm_remember (&argv); |
d9c393f5 JB |
3570 | } |
3571 | ||
3572 | ||
47c3f06d | 3573 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
1cc91f1b | 3574 | |
368bf056 MD |
3575 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3576 | sequentially, starting with the first element(s). This is used in | |
3577 | evalext.c where the Scheme procedure `serial-map', which guarantees | |
3578 | sequential behaviour, is implemented using scm_map. If the | |
3579 | behaviour changes, we need to update `serial-map'. | |
3580 | */ | |
3581 | ||
0f2d19dd | 3582 | SCM |
1bbd0b84 | 3583 | scm_map (SCM proc, SCM arg1, SCM args) |
0f2d19dd | 3584 | { |
d9c393f5 | 3585 | long i, len; |
0f2d19dd JB |
3586 | SCM res = SCM_EOL; |
3587 | SCM *pres = &res; | |
3588 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3589 | ||
3590 | if (SCM_NULLP (arg1)) | |
3591 | return res; | |
d9c393f5 | 3592 | len = scm_ilength (arg1); |
47c3f06d MD |
3593 | SCM_GASSERTn (len >= 0, |
3594 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
0f2d19dd JB |
3595 | if (SCM_NULLP (args)) |
3596 | { | |
3597 | while (SCM_NIMP (arg1)) | |
3598 | { | |
47c3f06d MD |
3599 | SCM_GASSERT2 (SCM_CONSP (arg1), g_map, proc, arg1, SCM_ARG2, s_map); |
3600 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), | |
3601 | SCM_EOL); | |
a23afe53 | 3602 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3603 | arg1 = SCM_CDR (arg1); |
3604 | } | |
3605 | return res; | |
3606 | } | |
47c3f06d | 3607 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3608 | ve = SCM_VELTS (args); |
cf7c17e9 | 3609 | #ifndef SCM_RECKLESS |
47c3f06d | 3610 | check_map_args (args, len, g_map, proc, arg1, s_map); |
0f2d19dd JB |
3611 | #endif |
3612 | while (1) | |
3613 | { | |
3614 | arg1 = SCM_EOL; | |
3615 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3616 | { | |
d9c393f5 JB |
3617 | if (SCM_IMP (ve[i])) |
3618 | return res; | |
0f2d19dd JB |
3619 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); |
3620 | ve[i] = SCM_CDR (ve[i]); | |
3621 | } | |
3622 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3623 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3624 | } |
3625 | } | |
3626 | ||
3627 | ||
47c3f06d | 3628 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
1cc91f1b | 3629 | |
0f2d19dd | 3630 | SCM |
1bbd0b84 | 3631 | scm_for_each (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3632 | { |
3633 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
d9c393f5 | 3634 | long i, len; |
0f2d19dd JB |
3635 | if SCM_NULLP (arg1) |
3636 | return SCM_UNSPECIFIED; | |
d9c393f5 | 3637 | len = scm_ilength (arg1); |
47c3f06d MD |
3638 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), |
3639 | SCM_ARG2, s_for_each); | |
0f2d19dd JB |
3640 | if SCM_NULLP (args) |
3641 | { | |
3642 | while SCM_NIMP (arg1) | |
3643 | { | |
47c3f06d MD |
3644 | SCM_GASSERT2 (SCM_CONSP (arg1), |
3645 | g_for_each, proc, arg1, SCM_ARG2, s_for_each); | |
0f2d19dd JB |
3646 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); |
3647 | arg1 = SCM_CDR (arg1); | |
3648 | } | |
3649 | return SCM_UNSPECIFIED; | |
3650 | } | |
47c3f06d | 3651 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3652 | ve = SCM_VELTS (args); |
cf7c17e9 | 3653 | #ifndef SCM_RECKLESS |
47c3f06d | 3654 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); |
0f2d19dd JB |
3655 | #endif |
3656 | while (1) | |
3657 | { | |
3658 | arg1 = SCM_EOL; | |
3659 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3660 | { | |
3661 | if SCM_IMP | |
3662 | (ve[i]) return SCM_UNSPECIFIED; | |
3663 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3664 | ve[i] = SCM_CDR (ve[i]); | |
3665 | } | |
3666 | scm_apply (proc, arg1, SCM_EOL); | |
3667 | } | |
3668 | } | |
3669 | ||
3670 | ||
1cc91f1b | 3671 | |
0f2d19dd | 3672 | SCM |
6e8d25a6 | 3673 | scm_closure (SCM code, SCM env) |
0f2d19dd JB |
3674 | { |
3675 | register SCM z; | |
3676 | SCM_NEWCELL (z); | |
3677 | SCM_SETCODE (z, code); | |
a23afe53 | 3678 | SCM_SETENV (z, env); |
0f2d19dd JB |
3679 | return z; |
3680 | } | |
3681 | ||
3682 | ||
3683 | long scm_tc16_promise; | |
1cc91f1b | 3684 | |
0f2d19dd | 3685 | SCM |
6e8d25a6 | 3686 | scm_makprom (SCM code) |
0f2d19dd | 3687 | { |
23a62151 | 3688 | SCM_RETURN_NEWSMOB (scm_tc16_promise, code); |
0f2d19dd JB |
3689 | } |
3690 | ||
3691 | ||
1cc91f1b | 3692 | |
0f2d19dd | 3693 | static int |
1bbd0b84 | 3694 | prinprom (SCM exp,SCM port,scm_print_state *pstate) |
0f2d19dd | 3695 | { |
19402679 | 3696 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3697 | scm_puts ("#<promise ", port); |
19402679 MD |
3698 | SCM_SET_WRITINGP (pstate, 1); |
3699 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3700 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3701 | scm_putc ('>', port); |
0f2d19dd JB |
3702 | return !0; |
3703 | } | |
3704 | ||
3705 | ||
3b3b36dd | 3706 | SCM_DEFINE (scm_force, "force", 1, 0, 0, |
1bbd0b84 GB |
3707 | (SCM x), |
3708 | "") | |
3709 | #define FUNC_NAME s_scm_force | |
0f2d19dd | 3710 | { |
3b3b36dd | 3711 | SCM_VALIDATE_SMOB (1,x,promise); |
0f2d19dd JB |
3712 | if (!((1L << 16) & SCM_CAR (x))) |
3713 | { | |
3714 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
3715 | if (!((1L << 16) & SCM_CAR (x))) | |
3716 | { | |
3717 | SCM_DEFER_INTS; | |
a23afe53 MD |
3718 | SCM_SETCDR (x, ans); |
3719 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3720 | SCM_ALLOW_INTS; |
3721 | } | |
3722 | } | |
3723 | return SCM_CDR (x); | |
3724 | } | |
1bbd0b84 | 3725 | #undef FUNC_NAME |
0f2d19dd | 3726 | |
a1ec6916 | 3727 | SCM_DEFINE (scm_promise_p, "promise?", 1, 0, 0, |
1bbd0b84 | 3728 | (SCM x), |
4079f87e GB |
3729 | "Return true if @var{obj} is a promise, i.e. a delayed computation |
3730 | (@pxref{Delayed evaluation,,,r4rs.info,The Revised^4 Report on Scheme}).") | |
1bbd0b84 | 3731 | #define FUNC_NAME s_scm_promise_p |
0f2d19dd | 3732 | { |
1bbd0b84 | 3733 | return SCM_BOOL(SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)); |
0f2d19dd | 3734 | } |
1bbd0b84 | 3735 | #undef FUNC_NAME |
0f2d19dd | 3736 | |
a1ec6916 | 3737 | SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0, |
1bbd0b84 GB |
3738 | (SCM xorig, SCM x, SCM y), |
3739 | "") | |
3740 | #define FUNC_NAME s_scm_cons_source | |
26d5b9b4 MD |
3741 | { |
3742 | SCM p, z; | |
3743 | SCM_NEWCELL (z); | |
3744 | SCM_SETCAR (z, x); | |
3745 | SCM_SETCDR (z, y); | |
3746 | /* Copy source properties possibly associated with xorig. */ | |
3747 | p = scm_whash_lookup (scm_source_whash, xorig); | |
3748 | if (SCM_NIMP (p)) | |
3749 | scm_whash_insert (scm_source_whash, z, p); | |
3750 | return z; | |
3751 | } | |
1bbd0b84 | 3752 | #undef FUNC_NAME |
26d5b9b4 | 3753 | |
a1ec6916 | 3754 | SCM_DEFINE (scm_copy_tree, "copy-tree", 1, 0, 0, |
1bbd0b84 | 3755 | (SCM obj), |
4079f87e GB |
3756 | "Recursively copy the data tree that is bound to @var{obj}, and return a |
3757 | pointer to the new data structure. @code{copy-tree} recurses down the | |
3758 | contents of both pairs and vectors (since both cons cells and vector | |
3759 | cells may point to arbitrary objects), and stops recursing when it hits | |
3760 | any other object.") | |
1bbd0b84 | 3761 | #define FUNC_NAME s_scm_copy_tree |
0f2d19dd JB |
3762 | { |
3763 | SCM ans, tl; | |
26d5b9b4 | 3764 | if (SCM_IMP (obj)) |
ff467021 | 3765 | return obj; |
3910272e MD |
3766 | if (SCM_VECTORP (obj)) |
3767 | { | |
3768 | scm_sizet i = SCM_LENGTH (obj); | |
3769 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); | |
3770 | while (i--) | |
3771 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3772 | return ans; | |
3773 | } | |
ff467021 | 3774 | if (SCM_NCONSP (obj)) |
0f2d19dd JB |
3775 | return obj; |
3776 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
26d5b9b4 MD |
3777 | ans = tl = scm_cons_source (obj, |
3778 | scm_copy_tree (SCM_CAR (obj)), | |
3779 | SCM_UNSPECIFIED); | |
cabe682c | 3780 | while (obj = SCM_CDR (obj), SCM_CONSP (obj)) |
a23afe53 MD |
3781 | { |
3782 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3783 | SCM_UNSPECIFIED)); | |
3784 | tl = SCM_CDR (tl); | |
3785 | } | |
3786 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3787 | return ans; |
3788 | } | |
1bbd0b84 | 3789 | #undef FUNC_NAME |
0f2d19dd | 3790 | |
1cc91f1b | 3791 | |
0f2d19dd | 3792 | SCM |
1bbd0b84 | 3793 | scm_eval_3 (SCM obj, int copyp, SCM env) |
0f2d19dd JB |
3794 | { |
3795 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3796 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3797 | else if (copyp) | |
3798 | obj = scm_copy_tree (obj); | |
6cb702da | 3799 | return SCM_XEVAL (obj, env); |
0f2d19dd JB |
3800 | } |
3801 | ||
3b3b36dd | 3802 | SCM_DEFINE (scm_eval2, "eval2", 2, 0, 0, |
1bbd0b84 | 3803 | (SCM obj, SCM env_thunk), |
4079f87e GB |
3804 | "Evaluate @var{exp}, a Scheme expression, in the environment designated |
3805 | by @var{lookup}, a symbol-lookup function. @code{(eval exp)} is | |
3806 | equivalent to @code{(eval2 exp *top-level-lookup-closure*)}.") | |
1bbd0b84 | 3807 | #define FUNC_NAME s_scm_eval2 |
0f2d19dd | 3808 | { |
6bcb0868 | 3809 | return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk)); |
0f2d19dd | 3810 | } |
1bbd0b84 | 3811 | #undef FUNC_NAME |
0f2d19dd | 3812 | |
3b3b36dd | 3813 | SCM_DEFINE (scm_eval, "eval", 1, 0, 0, |
1bbd0b84 | 3814 | (SCM obj), |
4079f87e GB |
3815 | "Evaluate @var{exp}, a list representing a Scheme expression, in the |
3816 | top-level environment.") | |
1bbd0b84 | 3817 | #define FUNC_NAME s_scm_eval |
0f2d19dd | 3818 | { |
6bcb0868 MD |
3819 | return scm_eval_3 (obj, |
3820 | 1, | |
3821 | scm_top_level_env | |
3822 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd | 3823 | } |
1bbd0b84 | 3824 | #undef FUNC_NAME |
0f2d19dd | 3825 | |
1bbd0b84 GB |
3826 | /* |
3827 | SCM_REGISTER_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); | |
3828 | */ | |
1cc91f1b | 3829 | |
0f2d19dd | 3830 | SCM |
1bbd0b84 | 3831 | scm_eval_x (SCM obj) |
0f2d19dd | 3832 | { |
6bcb0868 MD |
3833 | return scm_eval_3 (obj, |
3834 | 0, | |
3835 | scm_top_level_env | |
3836 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3837 | } |
3838 | ||
6dbd0af5 MD |
3839 | |
3840 | /* At this point, scm_deval and scm_dapply are generated. | |
3841 | */ | |
3842 | ||
0f2d19dd | 3843 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3844 | # define DEVAL |
3845 | # include "eval.c" | |
0f2d19dd JB |
3846 | #endif |
3847 | ||
3848 | ||
1cc91f1b | 3849 | |
0f2d19dd JB |
3850 | void |
3851 | scm_init_eval () | |
0f2d19dd | 3852 | { |
33b97402 MD |
3853 | scm_init_opts (scm_evaluator_traps, |
3854 | scm_evaluator_trap_table, | |
3855 | SCM_N_EVALUATOR_TRAPS); | |
3856 | scm_init_opts (scm_eval_options_interface, | |
3857 | scm_eval_opts, | |
3858 | SCM_N_EVAL_OPTIONS); | |
3859 | ||
f99c9c28 MD |
3860 | scm_tc16_promise = scm_make_smob_type ("promise", 0); |
3861 | scm_set_smob_mark (scm_tc16_promise, scm_markcdr); | |
3862 | scm_set_smob_print (scm_tc16_promise, prinprom); | |
b8229a3b | 3863 | |
81123e6d | 3864 | scm_f_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
0f2d19dd | 3865 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); |
2f0d1375 MD |
3866 | scm_sym_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); |
3867 | scm_sym_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3868 | scm_sym_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3869 | scm_sym_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3870 | scm_sym_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
0f2d19dd | 3871 | |
73b64342 MD |
3872 | scm_nil = scm_sysintern ("nil", SCM_UNDEFINED); |
3873 | SCM_SETCDR (scm_nil, SCM_CAR (scm_nil)); | |
3874 | scm_nil = SCM_CAR (scm_nil); | |
3875 | scm_t = scm_sysintern ("t", SCM_UNDEFINED); | |
3876 | SCM_SETCDR (scm_t, SCM_CAR (scm_t)); | |
3877 | scm_t = SCM_CAR (scm_t); | |
73b64342 | 3878 | |
0f2d19dd | 3879 | /* acros */ |
0f2d19dd JB |
3880 | /* end of acros */ |
3881 | ||
dc19d1d2 JB |
3882 | scm_top_level_lookup_closure_var = |
3883 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3884 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3885 | |
6dbd0af5 | 3886 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
3887 | scm_sym_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); |
3888 | scm_sym_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3889 | scm_sym_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3890 | scm_sym_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
6dbd0af5 MD |
3891 | #endif |
3892 | ||
0f2d19dd | 3893 | #include "eval.x" |
25eaf21a MD |
3894 | |
3895 | scm_add_feature ("delay"); | |
0f2d19dd | 3896 | } |
0f2d19dd | 3897 | |
6dbd0af5 | 3898 | #endif /* !DEVAL */ |