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e282f286 | 1 | /* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
6dbd0af5 MD |
47 | /* This file is read twice in order to produce debugging versions of |
48 | * scm_ceval and scm_apply. These functions, scm_deval and | |
49 | * scm_dapply, are produced when we define the preprocessor macro | |
50 | * DEVAL. The file is divided into sections which are treated | |
51 | * differently with respect to DEVAL. The heads of these sections are | |
52 | * marked with the string "SECTION:". | |
53 | */ | |
54 | ||
55 | ||
56 | /* SECTION: This code is compiled once. | |
0f2d19dd JB |
57 | */ |
58 | ||
59 | #ifndef DEVAL | |
60 | ||
d16332b3 | 61 | /* We need this to get the definitions for HAVE_ALLOCA_H, etc. */ |
a0599745 | 62 | #include "libguile/scmconfig.h" |
d16332b3 | 63 | |
48b96f4b JB |
64 | /* AIX requires this to be the first thing in the file. The #pragma |
65 | directive is indented so pre-ANSI compilers will ignore it, rather | |
66 | than choke on it. */ | |
5862b540 | 67 | #ifndef __GNUC__ |
48b96f4b JB |
68 | # if HAVE_ALLOCA_H |
69 | # include <alloca.h> | |
70 | # else | |
71 | # ifdef _AIX | |
72 | #pragma alloca | |
73 | # else | |
74 | # ifndef alloca /* predefined by HP cc +Olibcalls */ | |
75 | char *alloca (); | |
76 | # endif | |
77 | # endif | |
78 | # endif | |
79 | #endif | |
80 | ||
0f2d19dd | 81 | #include <stdio.h> |
a0599745 MD |
82 | #include "libguile/_scm.h" |
83 | #include "libguile/debug.h" | |
84 | #include "libguile/alist.h" | |
85 | #include "libguile/eq.h" | |
86 | #include "libguile/continuations.h" | |
87 | #include "libguile/throw.h" | |
88 | #include "libguile/smob.h" | |
89 | #include "libguile/macros.h" | |
90 | #include "libguile/procprop.h" | |
91 | #include "libguile/hashtab.h" | |
92 | #include "libguile/hash.h" | |
93 | #include "libguile/srcprop.h" | |
94 | #include "libguile/stackchk.h" | |
95 | #include "libguile/objects.h" | |
96 | #include "libguile/async.h" | |
97 | #include "libguile/feature.h" | |
98 | #include "libguile/modules.h" | |
99 | #include "libguile/ports.h" | |
100 | #include "libguile/root.h" | |
101 | #include "libguile/vectors.h" | |
102 | ||
103 | #include "libguile/validate.h" | |
104 | #include "libguile/eval.h" | |
89efbff4 | 105 | |
61364ba6 MD |
106 | SCM (*scm_memoize_method) (SCM, SCM); |
107 | ||
0f2d19dd JB |
108 | \f |
109 | ||
6dbd0af5 MD |
110 | /* The evaluator contains a plethora of EVAL symbols. |
111 | * This is an attempt at explanation. | |
112 | * | |
113 | * The following macros should be used in code which is read twice | |
114 | * (where the choice of evaluator is hard soldered): | |
115 | * | |
116 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
117 | * Originally, it is defined to scm_ceval, but is redefined to | |
118 | * scm_deval during the second pass. | |
119 | * | |
120 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
121 | * only side effects of expressions matter. All immediates are | |
122 | * ignored. | |
123 | * | |
6cb702da | 124 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
125 | * immediate. (This macro never calls an evaluator.) |
126 | * | |
127 | * EVALCAR evaluates the car of an expression. | |
128 | * | |
129 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
130 | * car is a lisp cell. | |
131 | * | |
132 | * The following macros should be used in code which is read once | |
133 | * (where the choice of evaluator is dynamic): | |
134 | * | |
6cb702da | 135 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
136 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
137 | * mode. | |
138 | * | |
6cb702da | 139 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
140 | * depending on the debugging mode. |
141 | * | |
142 | * The main motivation for keeping this plethora is efficiency | |
143 | * together with maintainability (=> locality of code). | |
144 | */ | |
145 | ||
6cb702da | 146 | #define SCM_CEVAL scm_ceval |
7d2b68a8 | 147 | #define SIDEVAL(x, env) if (SCM_NIMP (x)) SCM_CEVAL((x), (env)) |
6cb702da | 148 | |
7d2b68a8 MD |
149 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR (x)) \ |
150 | ? *scm_lookupcar (x, env, 1) \ | |
151 | : SCM_CEVAL (SCM_CAR (x), env)) | |
0f2d19dd | 152 | |
7d2b68a8 MD |
153 | #define EVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \ |
154 | ? (SCM_IMP (SCM_CAR (x)) \ | |
155 | ? SCM_EVALIM (SCM_CAR (x), env) \ | |
156 | : SCM_GLOC_VAL (SCM_CAR (x))) \ | |
157 | : EVALCELLCAR (x, env)) | |
0f2d19dd | 158 | |
e2806c10 | 159 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
160 | |
161 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 162 | |
0f2d19dd | 163 | SCM * |
6e8d25a6 | 164 | scm_ilookup (SCM iloc, SCM env) |
0f2d19dd JB |
165 | { |
166 | register int ir = SCM_IFRAME (iloc); | |
167 | register SCM er = env; | |
168 | for (; 0 != ir; --ir) | |
169 | er = SCM_CDR (er); | |
170 | er = SCM_CAR (er); | |
171 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
172 | er = SCM_CDR (er); | |
173 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
174 | return SCM_CDRLOC (er); |
175 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
176 | } |
177 | #endif | |
178 | ||
f8769b1d MV |
179 | #ifdef USE_THREADS |
180 | ||
181 | /* The Lookup Car Race | |
182 | - by Eva Luator | |
183 | ||
184 | Memoization of variables and special forms is done while executing | |
185 | the code for the first time. As long as there is only one thread | |
186 | everything is fine, but as soon as two threads execute the same | |
187 | code concurrently `for the first time' they can come into conflict. | |
188 | ||
189 | This memoization includes rewriting variable references into more | |
190 | efficient forms and expanding macros. Furthermore, macro expansion | |
191 | includes `compiling' special forms like `let', `cond', etc. into | |
192 | tree-code instructions. | |
193 | ||
194 | There shouldn't normally be a problem with memoizing local and | |
195 | global variable references (into ilocs and glocs), because all | |
196 | threads will mutate the code in *exactly* the same way and (if I | |
197 | read the C code correctly) it is not possible to observe a half-way | |
198 | mutated cons cell. The lookup procedure can handle this | |
199 | transparently without any critical sections. | |
200 | ||
201 | It is different with macro expansion, because macro expansion | |
202 | happens outside of the lookup procedure and can't be | |
203 | undone. Therefore it can't cope with it. It has to indicate | |
204 | failure when it detects a lost race and hope that the caller can | |
205 | handle it. Luckily, it turns out that this is the case. | |
206 | ||
207 | An example to illustrate this: Suppose that the follwing form will | |
208 | be memoized concurrently by two threads | |
209 | ||
210 | (let ((x 12)) x) | |
211 | ||
212 | Let's first examine the lookup of X in the body. The first thread | |
213 | decides that it has to find the symbol "x" in the environment and | |
214 | starts to scan it. Then the other thread takes over and actually | |
215 | overtakes the first. It looks up "x" and substitutes an | |
216 | appropriate iloc for it. Now the first thread continues and | |
217 | completes its lookup. It comes to exactly the same conclusions as | |
218 | the second one and could - without much ado - just overwrite the | |
219 | iloc with the same iloc. | |
220 | ||
221 | But let's see what will happen when the race occurs while looking | |
222 | up the symbol "let" at the start of the form. It could happen that | |
223 | the second thread interrupts the lookup of the first thread and not | |
224 | only substitutes a gloc for it but goes right ahead and replaces it | |
225 | with the compiled form (#@let* (x 12) x). Now, when the first | |
226 | thread completes its lookup, it would replace the #@let* with a | |
227 | gloc pointing to the "let" binding, effectively reverting the form | |
228 | to (let (x 12) x). This is wrong. It has to detect that it has | |
229 | lost the race and the evaluator has to reconsider the changed form | |
230 | completely. | |
231 | ||
232 | This race condition could be resolved with some kind of traffic | |
233 | light (like mutexes) around scm_lookupcar, but I think that it is | |
234 | best to avoid them in this case. They would serialize memoization | |
235 | completely and because lookup involves calling arbitrary Scheme | |
236 | code (via the lookup-thunk), threads could be blocked for an | |
237 | arbitrary amount of time or even deadlock. But with the current | |
238 | solution a lot of unnecessary work is potentially done. */ | |
239 | ||
240 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
241 | return NULL to indicate a failed lookup due to some race conditions | |
242 | between threads. This only happens when VLOC is the first cell of | |
243 | a special form that will eventually be memoized (like `let', etc.) | |
244 | In that case the whole lookup is bogus and the caller has to | |
245 | reconsider the complete special form. | |
246 | ||
247 | SCM_LOOKUPCAR is still there, of course. It just calls | |
248 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
249 | should only be called when it is known that VLOC is not the first | |
250 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
26d5b9b4 MD |
251 | for NULL. I think I've found the only places where this |
252 | applies. */ | |
f8769b1d MV |
253 | |
254 | #endif /* USE_THREADS */ | |
1cc91f1b | 255 | |
f25f761d GH |
256 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
257 | ||
d0b7bad7 | 258 | #ifdef USE_THREADS |
8ecf1f13 | 259 | static SCM * |
26d5b9b4 | 260 | scm_lookupcar1 (SCM vloc, SCM genv, int check) |
d0b7bad7 MD |
261 | #else |
262 | SCM * | |
26d5b9b4 | 263 | scm_lookupcar (SCM vloc, SCM genv, int check) |
d0b7bad7 | 264 | #endif |
0f2d19dd JB |
265 | { |
266 | SCM env = genv; | |
e3173f93 JB |
267 | register SCM *al, fl, var = SCM_CAR (vloc); |
268 | #ifdef USE_THREADS | |
269 | register SCM var2 = var; | |
270 | #endif | |
0f2d19dd JB |
271 | #ifdef MEMOIZE_LOCALS |
272 | register SCM iloc = SCM_ILOC00; | |
273 | #endif | |
274 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
275 | { | |
cf498326 | 276 | if (SCM_TRUE_P (scm_procedure_p (SCM_CAR (env)))) |
0f2d19dd | 277 | break; |
a23afe53 | 278 | al = SCM_CARLOC (env); |
0f2d19dd JB |
279 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
280 | { | |
281 | if (SCM_NCONSP (fl)) | |
33b97402 | 282 | { |
cf498326 | 283 | if (SCM_EQ_P (fl, var)) |
0f2d19dd JB |
284 | { |
285 | #ifdef MEMOIZE_LOCALS | |
f8769b1d | 286 | #ifdef USE_THREADS |
cf498326 | 287 | if (! SCM_EQ_P (SCM_CAR (vloc), var)) |
f8769b1d MV |
288 | goto race; |
289 | #endif | |
3201d763 | 290 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (iloc) + SCM_ICDR); |
0f2d19dd | 291 | #endif |
a23afe53 | 292 | return SCM_CDRLOC (*al); |
0f2d19dd | 293 | } |
33b97402 MD |
294 | else |
295 | break; | |
296 | } | |
a23afe53 | 297 | al = SCM_CDRLOC (*al); |
cf498326 | 298 | if (SCM_EQ_P (SCM_CAR (fl), var)) |
0f2d19dd JB |
299 | { |
300 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 301 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
302 | if (SCM_UNBNDP (SCM_CAR (*al))) |
303 | { | |
304 | env = SCM_EOL; | |
305 | goto errout; | |
306 | } | |
f8769b1d MV |
307 | #endif |
308 | #ifdef USE_THREADS | |
309 | if (SCM_CAR (vloc) != var) | |
310 | goto race; | |
0f2d19dd | 311 | #endif |
a23afe53 | 312 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 313 | #endif |
a23afe53 | 314 | return SCM_CARLOC (*al); |
0f2d19dd JB |
315 | } |
316 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 317 | iloc = SCM_PACK (SCM_UNPACK (iloc) + SCM_IDINC); |
0f2d19dd JB |
318 | #endif |
319 | } | |
320 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 321 | iloc = SCM_PACK ((~SCM_IDSTMSK) & (SCM_UNPACK(iloc) + SCM_IFRINC)); |
0f2d19dd JB |
322 | #endif |
323 | } | |
324 | { | |
325 | SCM top_thunk, vcell; | |
326 | if (SCM_NIMP(env)) | |
327 | { | |
328 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
329 | env = SCM_CDR (env); | |
330 | } | |
331 | else | |
332 | top_thunk = SCM_BOOL_F; | |
333 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
cf498326 | 334 | if (SCM_FALSEP (vcell)) |
0f2d19dd JB |
335 | goto errout; |
336 | else | |
337 | var = vcell; | |
338 | } | |
cf7c17e9 | 339 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
340 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
341 | { | |
342 | var = SCM_CAR (var); | |
343 | errout: | |
f5bf2977 | 344 | /* scm_everr (vloc, genv,...) */ |
26d5b9b4 | 345 | if (check) |
f25f761d GH |
346 | { |
347 | if (SCM_NULLP (env)) | |
70d63753 | 348 | scm_error (scm_unbound_variable_key, NULL, "Unbound variable: ~S", |
f25f761d GH |
349 | scm_cons (var, SCM_EOL), SCM_BOOL_F); |
350 | else | |
70d63753 | 351 | scm_misc_error (NULL, "Damaged environment: ~S", |
f25f761d GH |
352 | scm_cons (var, SCM_EOL)); |
353 | } | |
09e4d064 DH |
354 | else { |
355 | /* A variable could not be found, but we shall not throw an error. */ | |
356 | static SCM undef_object = SCM_UNDEFINED; | |
3201d763 | 357 | return &undef_object; |
09e4d064 | 358 | } |
0f2d19dd JB |
359 | } |
360 | #endif | |
f8769b1d MV |
361 | #ifdef USE_THREADS |
362 | if (SCM_CAR (vloc) != var2) | |
363 | { | |
364 | /* Some other thread has changed the very cell we are working | |
365 | on. In effect, it must have done our job or messed it up | |
366 | completely. */ | |
367 | race: | |
368 | var = SCM_CAR (vloc); | |
3201d763 | 369 | if (SCM_ITAG3 (var) == scm_tc3_cons_gloc) |
f8769b1d MV |
370 | return SCM_GLOC_VAL_LOC (var); |
371 | #ifdef MEMOIZE_LOCALS | |
f1267706 | 372 | if ((SCM_UNPACK (var) & 127) == (127 & SCM_UNPACK (SCM_ILOC00))) |
f8769b1d MV |
373 | return scm_ilookup (var, genv); |
374 | #endif | |
375 | /* We can't cope with anything else than glocs and ilocs. When | |
376 | a special form has been memoized (i.e. `let' into `#@let') we | |
377 | return NULL and expect the calling function to do the right | |
378 | thing. For the evaluator, this means going back and redoing | |
379 | the dispatch on the car of the form. */ | |
380 | return NULL; | |
381 | } | |
382 | #endif /* USE_THREADS */ | |
383 | ||
3201d763 | 384 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (var) + scm_tc3_cons_gloc); |
0f2d19dd | 385 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 386 | * but syntax or something.... */ |
a23afe53 | 387 | return SCM_CDRLOC (var); |
0f2d19dd JB |
388 | } |
389 | ||
f8769b1d MV |
390 | #ifdef USE_THREADS |
391 | SCM * | |
6e8d25a6 | 392 | scm_lookupcar (SCM vloc, SCM genv, int check) |
f8769b1d | 393 | { |
26d5b9b4 | 394 | SCM *loc = scm_lookupcar1 (vloc, genv, check); |
f8769b1d MV |
395 | if (loc == NULL) |
396 | abort (); | |
397 | return loc; | |
398 | } | |
f8769b1d MV |
399 | #endif |
400 | ||
0f2d19dd | 401 | #define unmemocar scm_unmemocar |
1cc91f1b | 402 | |
0f2d19dd | 403 | SCM |
6e8d25a6 | 404 | scm_unmemocar (SCM form, SCM env) |
0f2d19dd | 405 | { |
0f2d19dd JB |
406 | SCM c; |
407 | ||
408 | if (SCM_IMP (form)) | |
409 | return form; | |
410 | c = SCM_CAR (form); | |
b0c54567 | 411 | if (SCM_ITAG3 (c) == scm_tc3_cons_gloc) |
a963f787 | 412 | SCM_SETCAR (form, SCM_GLOC_SYM (c)); |
0f2d19dd | 413 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 414 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
415 | else if (SCM_ILOCP (c)) |
416 | { | |
b0c54567 DH |
417 | int ir; |
418 | ||
0f2d19dd JB |
419 | for (ir = SCM_IFRAME (c); ir != 0; --ir) |
420 | env = SCM_CDR (env); | |
421 | env = SCM_CAR (SCM_CAR (env)); | |
422 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
423 | env = SCM_CDR (env); | |
a23afe53 | 424 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 425 | } |
6dbd0af5 | 426 | #endif |
0f2d19dd JB |
427 | #endif |
428 | return form; | |
429 | } | |
430 | ||
1cc91f1b | 431 | |
0f2d19dd | 432 | SCM |
6e8d25a6 | 433 | scm_eval_car (SCM pair, SCM env) |
0f2d19dd | 434 | { |
6cb702da | 435 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
436 | } |
437 | ||
438 | \f | |
439 | /* | |
440 | * The following rewrite expressions and | |
441 | * some memoized forms have different syntax | |
442 | */ | |
443 | ||
3eeba8d4 JB |
444 | const char scm_s_expression[] = "missing or extra expression"; |
445 | const char scm_s_test[] = "bad test"; | |
446 | const char scm_s_body[] = "bad body"; | |
447 | const char scm_s_bindings[] = "bad bindings"; | |
448 | const char scm_s_variable[] = "bad variable"; | |
449 | const char scm_s_clauses[] = "bad or missing clauses"; | |
450 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 451 | |
81123e6d MD |
452 | SCM scm_sym_dot, scm_sym_arrow, scm_sym_else; |
453 | SCM scm_sym_unquote, scm_sym_uq_splicing, scm_sym_apply; | |
454 | ||
455 | SCM scm_f_apply; | |
b8229a3b | 456 | |
6dbd0af5 | 457 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
458 | SCM scm_sym_enter_frame, scm_sym_apply_frame, scm_sym_exit_frame; |
459 | SCM scm_sym_trace; | |
6dbd0af5 | 460 | #endif |
0f2d19dd | 461 | |
0f2d19dd | 462 | |
26d5b9b4 MD |
463 | /* Check that the body denoted by XORIG is valid and rewrite it into |
464 | its internal form. The internal form of a body is just the body | |
465 | itself, but prefixed with an ISYM that denotes to what kind of | |
466 | outer construct this body belongs. A lambda body starts with | |
467 | SCM_IM_LAMBDA, for example, a body of a let starts with SCM_IM_LET, | |
468 | etc. The one exception is a body that belongs to a letrec that has | |
469 | been formed by rewriting internal defines: it starts with | |
470 | SCM_IM_DEFINE. */ | |
471 | ||
472 | /* XXX - Besides controlling the rewriting of internal defines, the | |
473 | additional ISYM could be used for improved error messages. | |
474 | This is not done yet. */ | |
475 | ||
476 | static SCM | |
6e8d25a6 | 477 | scm_m_body (SCM op, SCM xorig, const char *what) |
26d5b9b4 | 478 | { |
ab66ae47 | 479 | SCM_ASSYNT (scm_ilength (xorig) >= 1, xorig, scm_s_expression, what); |
26d5b9b4 MD |
480 | |
481 | /* Don't add another ISYM if one is present already. */ | |
482 | if (SCM_ISYMP (SCM_CAR (xorig))) | |
483 | return xorig; | |
484 | ||
485 | /* Retain possible doc string. */ | |
44d3cb0d | 486 | if (!SCM_CONSP (SCM_CAR (xorig))) |
26d5b9b4 MD |
487 | { |
488 | if (SCM_NNULLP (SCM_CDR(xorig))) | |
489 | return scm_cons (SCM_CAR (xorig), | |
490 | scm_m_body (op, SCM_CDR(xorig), what)); | |
491 | return xorig; | |
492 | } | |
493 | ||
ab66ae47 | 494 | return scm_cons (op, xorig); |
26d5b9b4 MD |
495 | } |
496 | ||
b8229a3b | 497 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
2f0d1375 | 498 | SCM_GLOBAL_SYMBOL(scm_sym_quote, s_quote); |
1cc91f1b | 499 | |
0f2d19dd | 500 | SCM |
6e8d25a6 | 501 | scm_m_quote (SCM xorig, SCM env) |
0f2d19dd | 502 | { |
26d5b9b4 MD |
503 | SCM x = scm_copy_tree (SCM_CDR (xorig)); |
504 | ||
6cb702da | 505 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 506 | xorig, scm_s_expression, s_quote); |
3a3111a8 | 507 | return scm_cons (SCM_IM_QUOTE, x); |
0f2d19dd JB |
508 | } |
509 | ||
510 | ||
1cc91f1b | 511 | |
b8229a3b | 512 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
2f0d1375 | 513 | SCM_GLOBAL_SYMBOL(scm_sym_begin, s_begin); |
b8229a3b | 514 | |
0f2d19dd | 515 | SCM |
6e8d25a6 | 516 | scm_m_begin (SCM xorig, SCM env) |
0f2d19dd | 517 | { |
6cb702da | 518 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 519 | xorig, scm_s_expression, s_begin); |
3a3111a8 | 520 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
0f2d19dd JB |
521 | } |
522 | ||
b8229a3b | 523 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
2f0d1375 | 524 | SCM_GLOBAL_SYMBOL(scm_sym_if, s_if); |
1cc91f1b | 525 | |
0f2d19dd | 526 | SCM |
6e8d25a6 | 527 | scm_m_if (SCM xorig, SCM env) |
0f2d19dd JB |
528 | { |
529 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 530 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
3a3111a8 | 531 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
0f2d19dd JB |
532 | } |
533 | ||
534 | ||
89efbff4 MD |
535 | /* Will go into the RnRS module when Guile is factorized. |
536 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
537 | const char scm_s_set_x[] = "set!"; | |
538 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 539 | |
0f2d19dd | 540 | SCM |
6e8d25a6 | 541 | scm_m_set_x (SCM xorig, SCM env) |
0f2d19dd | 542 | { |
6dbd0af5 | 543 | SCM x = SCM_CDR (xorig); |
89efbff4 | 544 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
cabe682c | 545 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 | 546 | xorig, scm_s_variable, scm_s_set_x); |
3a3111a8 | 547 | return scm_cons (SCM_IM_SET_X, x); |
0f2d19dd JB |
548 | } |
549 | ||
550 | ||
551 | #if 0 | |
1cc91f1b | 552 | |
0f2d19dd | 553 | SCM |
6e8d25a6 | 554 | scm_m_vref (SCM xorig, SCM env) |
0f2d19dd JB |
555 | { |
556 | SCM x = SCM_CDR (xorig); | |
6cb702da | 557 | SCM_ASSYNT (1 == scm_ilength (x), xorig, scm_s_expression, s_vref); |
0f2d19dd JB |
558 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) |
559 | { | |
f5bf2977 | 560 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 | 561 | scm_misc_error (NULL, |
70d63753 | 562 | "Bad variable: ~S", |
523f5266 | 563 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); |
0f2d19dd | 564 | } |
6cb702da MD |
565 | SCM_ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), |
566 | xorig, scm_s_variable, s_vref); | |
0f2d19dd JB |
567 | return scm_cons (IM_VREF, x); |
568 | } | |
569 | ||
570 | ||
1cc91f1b | 571 | |
0f2d19dd | 572 | SCM |
6e8d25a6 | 573 | scm_m_vset (SCM xorig, SCM env) |
0f2d19dd JB |
574 | { |
575 | SCM x = SCM_CDR (xorig); | |
6cb702da MD |
576 | SCM_ASSYNT (3 == scm_ilength (x), xorig, scm_s_expression, s_vset); |
577 | SCM_ASSYNT ((DEFSCM_VARIABLEP (SCM_CAR (x)) | |
578 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
579 | xorig, scm_s_variable, s_vset); | |
0f2d19dd JB |
580 | return scm_cons (IM_VSET, x); |
581 | } | |
582 | #endif | |
583 | ||
584 | ||
b8229a3b | 585 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
2f0d1375 | 586 | SCM_GLOBAL_SYMBOL(scm_sym_and, s_and); |
1cc91f1b | 587 | |
0f2d19dd | 588 | SCM |
6e8d25a6 | 589 | scm_m_and (SCM xorig, SCM env) |
0f2d19dd JB |
590 | { |
591 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 592 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd | 593 | if (len >= 1) |
3a3111a8 | 594 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); |
0f2d19dd JB |
595 | else |
596 | return SCM_BOOL_T; | |
597 | } | |
598 | ||
b8229a3b | 599 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
2f0d1375 | 600 | SCM_GLOBAL_SYMBOL(scm_sym_or,s_or); |
1cc91f1b | 601 | |
0f2d19dd | 602 | SCM |
6e8d25a6 | 603 | scm_m_or (SCM xorig, SCM env) |
0f2d19dd JB |
604 | { |
605 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 606 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd | 607 | if (len >= 1) |
3a3111a8 | 608 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); |
0f2d19dd JB |
609 | else |
610 | return SCM_BOOL_F; | |
611 | } | |
612 | ||
613 | ||
b8229a3b | 614 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
2f0d1375 | 615 | SCM_GLOBAL_SYMBOL(scm_sym_case, s_case); |
1cc91f1b | 616 | |
0f2d19dd | 617 | SCM |
6e8d25a6 | 618 | scm_m_case (SCM xorig, SCM env) |
0f2d19dd | 619 | { |
26d5b9b4 | 620 | SCM proc, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
b8229a3b | 621 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
622 | while (SCM_NIMP (x = SCM_CDR (x))) |
623 | { | |
624 | proc = SCM_CAR (x); | |
b8229a3b | 625 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da | 626 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
cf498326 | 627 | || SCM_EQ_P (scm_sym_else, SCM_CAR (proc)), |
b8229a3b | 628 | xorig, scm_s_clauses, s_case); |
0f2d19dd | 629 | } |
3a3111a8 | 630 | return scm_cons (SCM_IM_CASE, cdrx); |
0f2d19dd JB |
631 | } |
632 | ||
633 | ||
b8229a3b | 634 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
2f0d1375 | 635 | SCM_GLOBAL_SYMBOL(scm_sym_cond, s_cond); |
b8229a3b | 636 | |
1cc91f1b | 637 | |
0f2d19dd | 638 | SCM |
6e8d25a6 | 639 | scm_m_cond (SCM xorig, SCM env) |
0f2d19dd | 640 | { |
26d5b9b4 | 641 | SCM arg1, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
0f2d19dd | 642 | int len = scm_ilength (x); |
b8229a3b | 643 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
644 | while (SCM_NIMP (x)) |
645 | { | |
646 | arg1 = SCM_CAR (x); | |
647 | len = scm_ilength (arg1); | |
b8229a3b | 648 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
cf498326 | 649 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (arg1))) |
0f2d19dd | 650 | { |
6cb702da | 651 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 652 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 653 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd | 654 | } |
cf498326 | 655 | if (len >= 2 && SCM_EQ_P (scm_sym_arrow, SCM_CAR (SCM_CDR (arg1)))) |
6cb702da | 656 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 657 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
658 | x = SCM_CDR (x); |
659 | } | |
3a3111a8 | 660 | return scm_cons (SCM_IM_COND, cdrx); |
0f2d19dd JB |
661 | } |
662 | ||
b8229a3b | 663 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
2f0d1375 | 664 | SCM_GLOBAL_SYMBOL(scm_sym_lambda, s_lambda); |
1cc91f1b | 665 | |
0f2d19dd | 666 | SCM |
6e8d25a6 | 667 | scm_m_lambda (SCM xorig, SCM env) |
0f2d19dd JB |
668 | { |
669 | SCM proc, x = SCM_CDR (xorig); | |
26d5b9b4 | 670 | if (scm_ilength (x) < 2) |
0f2d19dd JB |
671 | goto badforms; |
672 | proc = SCM_CAR (x); | |
33b97402 MD |
673 | if (SCM_NULLP (proc)) |
674 | goto memlambda; | |
cf498326 | 675 | if (SCM_EQ_P (SCM_IM_LET, proc)) /* named let */ |
26d5b9b4 | 676 | goto memlambda; |
33b97402 MD |
677 | if (SCM_IMP (proc)) |
678 | goto badforms; | |
679 | if (SCM_SYMBOLP (proc)) | |
680 | goto memlambda; | |
681 | if (SCM_NCONSP (proc)) | |
682 | goto badforms; | |
683 | while (SCM_NIMP (proc)) | |
0f2d19dd | 684 | { |
33b97402 MD |
685 | if (SCM_NCONSP (proc)) |
686 | { | |
0f2d19dd | 687 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
688 | goto badforms; |
689 | else | |
690 | goto memlambda; | |
691 | } | |
0c95b57d | 692 | if (!SCM_SYMBOLP (SCM_CAR (proc))) |
0f2d19dd JB |
693 | goto badforms; |
694 | proc = SCM_CDR (proc); | |
695 | } | |
ff467021 | 696 | if (SCM_NNULLP (proc)) |
26d5b9b4 MD |
697 | { |
698 | badforms: | |
699 | scm_wta (xorig, scm_s_formals, s_lambda); | |
700 | } | |
701 | ||
702 | memlambda: | |
3a3111a8 MD |
703 | return scm_cons2 (SCM_IM_LAMBDA, SCM_CAR (x), |
704 | scm_m_body (SCM_IM_LAMBDA, SCM_CDR (x), s_lambda)); | |
0f2d19dd JB |
705 | } |
706 | ||
b8229a3b | 707 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
2f0d1375 | 708 | SCM_GLOBAL_SYMBOL(scm_sym_letstar,s_letstar); |
0f2d19dd | 709 | |
1cc91f1b | 710 | |
0f2d19dd | 711 | SCM |
6e8d25a6 | 712 | scm_m_letstar (SCM xorig, SCM env) |
0f2d19dd JB |
713 | { |
714 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
715 | int len = scm_ilength (x); | |
b8229a3b | 716 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 717 | proc = SCM_CAR (x); |
b8229a3b | 718 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
ff467021 | 719 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
720 | { |
721 | arg1 = SCM_CAR (proc); | |
b8229a3b | 722 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
0c95b57d | 723 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, s_letstar); |
0f2d19dd | 724 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 725 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
726 | proc = SCM_CDR (proc); |
727 | } | |
728 | x = scm_cons (vars, SCM_CDR (x)); | |
26d5b9b4 | 729 | |
3a3111a8 MD |
730 | return scm_cons2 (SCM_IM_LETSTAR, SCM_CAR (x), |
731 | scm_m_body (SCM_IM_LETSTAR, SCM_CDR (x), s_letstar)); | |
0f2d19dd JB |
732 | } |
733 | ||
734 | /* DO gets the most radically altered syntax | |
735 | (do ((<var1> <init1> <step1>) | |
736 | (<var2> <init2>) | |
737 | ... ) | |
738 | (<test> <return>) | |
739 | <body>) | |
740 | ;; becomes | |
741 | (do_mem (varn ... var2 var1) | |
742 | (<init1> <init2> ... <initn>) | |
743 | (<test> <return>) | |
744 | (<body>) | |
745 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
746 | */ | |
747 | ||
b8229a3b | 748 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
2f0d1375 | 749 | SCM_GLOBAL_SYMBOL(scm_sym_do, s_do); |
1cc91f1b | 750 | |
0f2d19dd | 751 | SCM |
6e8d25a6 | 752 | scm_m_do (SCM xorig, SCM env) |
0f2d19dd JB |
753 | { |
754 | SCM x = SCM_CDR (xorig), arg1, proc; | |
755 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
756 | SCM *initloc = &inits, *steploc = &steps; | |
757 | int len = scm_ilength (x); | |
6cb702da | 758 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 759 | proc = SCM_CAR (x); |
6cb702da | 760 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
ff467021 | 761 | while (SCM_NIMP(proc)) |
0f2d19dd JB |
762 | { |
763 | arg1 = SCM_CAR (proc); | |
764 | len = scm_ilength (arg1); | |
6cb702da | 765 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
0c95b57d | 766 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, "do"); |
0f2d19dd JB |
767 | /* vars reversed here, inits and steps reversed at evaluation */ |
768 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
769 | arg1 = SCM_CDR (arg1); | |
770 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 771 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
772 | arg1 = SCM_CDR (arg1); |
773 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 774 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
775 | proc = SCM_CDR (proc); |
776 | } | |
777 | x = SCM_CDR (x); | |
6cb702da | 778 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
779 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
780 | x = scm_cons2 (vars, inits, x); | |
3a3111a8 | 781 | return scm_cons (SCM_IM_DO, x); |
0f2d19dd JB |
782 | } |
783 | ||
6dbd0af5 MD |
784 | /* evalcar is small version of inline EVALCAR when we don't care about |
785 | * speed | |
786 | */ | |
787 | #define evalcar scm_eval_car | |
0f2d19dd | 788 | |
1cc91f1b | 789 | |
1bbd0b84 | 790 | static SCM iqq (SCM form, SCM env, int depth); |
1cc91f1b | 791 | |
b8229a3b | 792 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
2f0d1375 | 793 | SCM_GLOBAL_SYMBOL(scm_sym_quasiquote, s_quasiquote); |
b8229a3b MS |
794 | |
795 | SCM | |
6e8d25a6 | 796 | scm_m_quasiquote (SCM xorig, SCM env) |
b8229a3b MS |
797 | { |
798 | SCM x = SCM_CDR (xorig); | |
799 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
800 | return iqq (SCM_CAR (x), env, 1); | |
801 | } | |
802 | ||
803 | ||
0f2d19dd | 804 | static SCM |
1bbd0b84 | 805 | iqq (SCM form,SCM env,int depth) |
0f2d19dd JB |
806 | { |
807 | SCM tmp; | |
808 | int edepth = depth; | |
ff467021 JB |
809 | if (SCM_IMP(form)) |
810 | return form; | |
0f2d19dd JB |
811 | if (SCM_VECTORP (form)) |
812 | { | |
813 | long i = SCM_LENGTH (form); | |
814 | SCM *data = SCM_VELTS (form); | |
815 | tmp = SCM_EOL; | |
816 | for (; --i >= 0;) | |
817 | tmp = scm_cons (data[i], tmp); | |
818 | return scm_vector (iqq (tmp, env, depth)); | |
819 | } | |
ff467021 JB |
820 | if (SCM_NCONSP(form)) |
821 | return form; | |
0f2d19dd | 822 | tmp = SCM_CAR (form); |
cf498326 | 823 | if (SCM_EQ_P (scm_sym_quasiquote, tmp)) |
0f2d19dd JB |
824 | { |
825 | depth++; | |
826 | goto label; | |
827 | } | |
cf498326 | 828 | if (SCM_EQ_P (scm_sym_unquote, tmp)) |
0f2d19dd JB |
829 | { |
830 | --depth; | |
831 | label: | |
832 | form = SCM_CDR (form); | |
0c95b57d GB |
833 | SCM_ASSERT (SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
834 | form, SCM_ARG1, s_quasiquote); | |
0f2d19dd JB |
835 | if (0 == depth) |
836 | return evalcar (form, env); | |
837 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
838 | } | |
cf498326 | 839 | if (SCM_NIMP (tmp) && (SCM_EQ_P (scm_sym_uq_splicing, SCM_CAR (tmp)))) |
0f2d19dd JB |
840 | { |
841 | tmp = SCM_CDR (tmp); | |
842 | if (0 == --edepth) | |
843 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
844 | } | |
845 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
846 | } | |
847 | ||
848 | /* Here are acros which return values rather than code. */ | |
849 | ||
a570e93a MD |
850 | SCM_SYNTAX (s_delay, "delay", scm_makmmacro, scm_m_delay); |
851 | SCM_GLOBAL_SYMBOL (scm_sym_delay, s_delay); | |
1cc91f1b | 852 | |
0f2d19dd | 853 | SCM |
6e8d25a6 | 854 | scm_m_delay (SCM xorig, SCM env) |
0f2d19dd | 855 | { |
6cb702da | 856 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
a570e93a | 857 | return scm_cons2 (SCM_IM_DELAY, SCM_EOL, SCM_CDR (xorig)); |
0f2d19dd JB |
858 | } |
859 | ||
1cc91f1b | 860 | |
b8229a3b | 861 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
2f0d1375 | 862 | SCM_GLOBAL_SYMBOL(scm_sym_define, s_define); |
1cc91f1b | 863 | |
0f2d19dd | 864 | SCM |
6e8d25a6 | 865 | scm_m_define (SCM x, SCM env) |
0f2d19dd JB |
866 | { |
867 | SCM proc, arg1 = x; | |
868 | x = SCM_CDR (x); | |
6cb702da | 869 | /* SCM_ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ |
b8229a3b | 870 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
871 | proc = SCM_CAR (x); |
872 | x = SCM_CDR (x); | |
0c95b57d | 873 | while (SCM_CONSP (proc)) |
0f2d19dd | 874 | { /* nested define syntax */ |
2f0d1375 | 875 | x = scm_cons (scm_cons2 (scm_sym_lambda, SCM_CDR (proc), x), SCM_EOL); |
0f2d19dd JB |
876 | proc = SCM_CAR (proc); |
877 | } | |
0c95b57d | 878 | SCM_ASSYNT (SCM_SYMBOLP (proc), |
b8229a3b MS |
879 | arg1, scm_s_variable, s_define); |
880 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
881 | if (SCM_TOP_LEVEL (env)) |
882 | { | |
883 | x = evalcar (x, env); | |
6dbd0af5 | 884 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
885 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
886 | { | |
887 | arg1 = x; | |
888 | proc: | |
889 | if (SCM_CLOSUREP (arg1) | |
890 | /* Only the first definition determines the name. */ | |
cf498326 | 891 | && SCM_FALSEP (scm_procedure_property (arg1, scm_sym_name))) |
2f0d1375 | 892 | scm_set_procedure_property_x (arg1, scm_sym_name, proc); |
80ea260c | 893 | else if (SCM_TYP16 (arg1) == scm_tc16_macro |
cf498326 | 894 | && !SCM_EQ_P (SCM_CDR (arg1), arg1)) |
80ea260c MD |
895 | { |
896 | arg1 = SCM_CDR (arg1); | |
897 | goto proc; | |
898 | } | |
899 | } | |
6dbd0af5 | 900 | #endif |
6cb702da | 901 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
0f2d19dd | 902 | #if 0 |
cf7c17e9 | 903 | #ifndef SCM_RECKLESS |
3201d763 | 904 | if (SCM_NIMP (SCM_CDR (arg1)) && (SCM_SNAME (SCM_CDR (arg1)) == proc) |
0f2d19dd JB |
905 | && (SCM_CDR (arg1) != x)) |
906 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
907 | else | |
908 | #endif | |
909 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
910 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 911 | #endif |
a23afe53 | 912 | SCM_SETCDR (arg1, x); |
0f2d19dd | 913 | #ifdef SICP |
2f0d1375 | 914 | return scm_cons2 (scm_sym_quote, SCM_CAR (arg1), SCM_EOL); |
0f2d19dd JB |
915 | #else |
916 | return SCM_UNSPECIFIED; | |
917 | #endif | |
918 | } | |
919 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
920 | } | |
6dbd0af5 | 921 | |
0f2d19dd JB |
922 | /* end of acros */ |
923 | ||
26d5b9b4 | 924 | static SCM |
6e8d25a6 | 925 | scm_m_letrec1 (SCM op, SCM imm, SCM xorig, SCM env) |
0f2d19dd JB |
926 | { |
927 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
928 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
929 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
930 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
931 | ||
0f2d19dd | 932 | proc = SCM_CAR (x); |
ab66ae47 | 933 | SCM_ASSYNT (scm_ilength (proc) >= 1, xorig, scm_s_bindings, what); |
0f2d19dd JB |
934 | do |
935 | { | |
936 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
937 | arg1 = SCM_CAR (proc); | |
ab66ae47 DH |
938 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, what); |
939 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, what); | |
0f2d19dd JB |
940 | vars = scm_cons (SCM_CAR (arg1), vars); |
941 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 942 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd | 943 | } |
ff467021 | 944 | while (SCM_NIMP (proc = SCM_CDR (proc))); |
26d5b9b4 | 945 | |
3a3111a8 MD |
946 | return scm_cons2 (op, vars, |
947 | scm_cons (inits, scm_m_body (imm, SCM_CDR (x), what))); | |
0f2d19dd JB |
948 | } |
949 | ||
26d5b9b4 | 950 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
2f0d1375 | 951 | SCM_GLOBAL_SYMBOL(scm_sym_letrec, s_letrec); |
26d5b9b4 MD |
952 | |
953 | SCM | |
6e8d25a6 | 954 | scm_m_letrec (SCM xorig, SCM env) |
26d5b9b4 MD |
955 | { |
956 | SCM x = SCM_CDR (xorig); | |
957 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_letrec); | |
958 | ||
959 | if (SCM_NULLP (SCM_CAR (x))) /* null binding, let* faster */ | |
3a3111a8 MD |
960 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), SCM_EOL, |
961 | scm_m_body (SCM_IM_LETREC, | |
962 | SCM_CDR (x), | |
963 | s_letrec)), | |
26d5b9b4 MD |
964 | env); |
965 | else | |
966 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LETREC, xorig, env); | |
967 | } | |
1cc91f1b | 968 | |
b8229a3b | 969 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
2f0d1375 | 970 | SCM_GLOBAL_SYMBOL(scm_sym_let, s_let); |
b8229a3b | 971 | |
0f2d19dd | 972 | SCM |
6e8d25a6 | 973 | scm_m_let (SCM xorig, SCM env) |
0f2d19dd JB |
974 | { |
975 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
976 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
977 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
978 | ||
b8229a3b | 979 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
980 | proc = SCM_CAR (x); |
981 | if (SCM_NULLP (proc) | |
0c95b57d | 982 | || (SCM_CONSP (proc) |
26d5b9b4 MD |
983 | && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) |
984 | { | |
985 | /* null or single binding, let* is faster */ | |
3a3111a8 MD |
986 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), proc, |
987 | scm_m_body (SCM_IM_LET, | |
988 | SCM_CDR (x), | |
989 | s_let)), | |
26d5b9b4 MD |
990 | env); |
991 | } | |
992 | ||
b8229a3b | 993 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
26d5b9b4 MD |
994 | if (SCM_CONSP (proc)) |
995 | { | |
996 | /* plain let, proc is <bindings> */ | |
997 | return scm_m_letrec1 (SCM_IM_LET, SCM_IM_LET, xorig, env); | |
998 | } | |
999 | ||
0f2d19dd | 1000 | if (!SCM_SYMBOLP (proc)) |
b8229a3b | 1001 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
1002 | name = proc; /* named let, build equiv letrec */ |
1003 | x = SCM_CDR (x); | |
b8229a3b | 1004 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
26d5b9b4 | 1005 | proc = SCM_CAR (x); /* bindings list */ |
b8229a3b | 1006 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
ff467021 | 1007 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
1008 | { /* vars and inits both in order */ |
1009 | arg1 = SCM_CAR (proc); | |
b8229a3b | 1010 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
0c95b57d | 1011 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 1012 | xorig, scm_s_variable, s_let); |
0f2d19dd | 1013 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 1014 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 1015 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 1016 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
1017 | proc = SCM_CDR (proc); |
1018 | } | |
26d5b9b4 | 1019 | |
2f0d1375 | 1020 | proc = scm_cons2 (scm_sym_lambda, vars, |
26d5b9b4 | 1021 | scm_m_body (SCM_IM_LET, SCM_CDR (x), "let")); |
2f0d1375 | 1022 | proc = scm_cons2 (scm_sym_let, scm_cons (scm_cons2 (name, proc, SCM_EOL), |
26d5b9b4 MD |
1023 | SCM_EOL), |
1024 | scm_acons (name, inits, SCM_EOL)); | |
1025 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LET, proc, env); | |
0f2d19dd JB |
1026 | } |
1027 | ||
1028 | ||
81123e6d MD |
1029 | SCM_SYNTAX (s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
1030 | SCM_GLOBAL_SYMBOL (scm_sym_atapply, s_atapply); | |
1031 | SCM_GLOBAL_SYMBOL (scm_sym_apply, s_atapply + 1); | |
1cc91f1b | 1032 | |
0f2d19dd | 1033 | SCM |
6e8d25a6 | 1034 | scm_m_apply (SCM xorig, SCM env) |
0f2d19dd | 1035 | { |
6cb702da | 1036 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 1037 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
1038 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1039 | } | |
1040 | ||
b8229a3b MS |
1041 | |
1042 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
2f0d1375 | 1043 | SCM_GLOBAL_SYMBOL(scm_sym_atcall_cc,s_atcall_cc); |
0f2d19dd | 1044 | |
1cc91f1b | 1045 | |
0f2d19dd | 1046 | SCM |
6e8d25a6 | 1047 | scm_m_cont (SCM xorig, SCM env) |
0f2d19dd | 1048 | { |
6cb702da | 1049 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1050 | xorig, scm_s_expression, s_atcall_cc); |
3a3111a8 | 1051 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
0f2d19dd JB |
1052 | } |
1053 | ||
73b64342 MD |
1054 | /* Multi-language support */ |
1055 | ||
43a912cf MD |
1056 | SCM scm_lisp_nil; |
1057 | SCM scm_lisp_t; | |
73b64342 MD |
1058 | |
1059 | SCM_SYNTAX (s_nil_cond, "nil-cond", scm_makmmacro, scm_m_nil_cond); | |
1060 | ||
1061 | SCM | |
1062 | scm_m_nil_cond (SCM xorig, SCM env) | |
1063 | { | |
1064 | int len = scm_ilength (SCM_CDR (xorig)); | |
1065 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1066 | scm_s_expression, "nil-cond"); | |
1067 | return scm_cons (SCM_IM_NIL_COND, SCM_CDR (xorig)); | |
1068 | } | |
1069 | ||
1070 | SCM_SYNTAX (s_nil_ify, "nil-ify", scm_makmmacro, scm_m_nil_ify); | |
1071 | ||
1072 | SCM | |
1073 | scm_m_nil_ify (SCM xorig, SCM env) | |
1074 | { | |
1075 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1076 | xorig, scm_s_expression, "nil-ify"); | |
1077 | return scm_cons (SCM_IM_NIL_IFY, SCM_CDR (xorig)); | |
1078 | } | |
1079 | ||
1080 | SCM_SYNTAX (s_t_ify, "t-ify", scm_makmmacro, scm_m_t_ify); | |
1081 | ||
1082 | SCM | |
1083 | scm_m_t_ify (SCM xorig, SCM env) | |
1084 | { | |
1085 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1086 | xorig, scm_s_expression, "t-ify"); | |
1087 | return scm_cons (SCM_IM_T_IFY, SCM_CDR (xorig)); | |
1088 | } | |
1089 | ||
1090 | SCM_SYNTAX (s_0_cond, "0-cond", scm_makmmacro, scm_m_0_cond); | |
1091 | ||
1092 | SCM | |
1093 | scm_m_0_cond (SCM xorig, SCM env) | |
1094 | { | |
1095 | int len = scm_ilength (SCM_CDR (xorig)); | |
1096 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1097 | scm_s_expression, "0-cond"); | |
1098 | return scm_cons (SCM_IM_0_COND, SCM_CDR (xorig)); | |
1099 | } | |
1100 | ||
1101 | SCM_SYNTAX (s_0_ify, "0-ify", scm_makmmacro, scm_m_0_ify); | |
1102 | ||
1103 | SCM | |
1104 | scm_m_0_ify (SCM xorig, SCM env) | |
1105 | { | |
1106 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1107 | xorig, scm_s_expression, "0-ify"); | |
1108 | return scm_cons (SCM_IM_0_IFY, SCM_CDR (xorig)); | |
1109 | } | |
1110 | ||
1111 | SCM_SYNTAX (s_1_ify, "1-ify", scm_makmmacro, scm_m_1_ify); | |
1112 | ||
1113 | SCM | |
1114 | scm_m_1_ify (SCM xorig, SCM env) | |
1115 | { | |
1116 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1117 | xorig, scm_s_expression, "1-ify"); | |
1118 | return scm_cons (SCM_IM_1_IFY, SCM_CDR (xorig)); | |
1119 | } | |
1120 | ||
1121 | SCM_SYNTAX (s_atfop, "@fop", scm_makmmacro, scm_m_atfop); | |
1122 | ||
1123 | SCM | |
1124 | scm_m_atfop (SCM xorig, SCM env) | |
1125 | { | |
1126 | SCM x = SCM_CDR (xorig), vcell; | |
1127 | SCM_ASSYNT (scm_ilength (x) >= 1, xorig, scm_s_expression, "@fop"); | |
1128 | vcell = scm_symbol_fref (SCM_CAR (x)); | |
0c95b57d | 1129 | SCM_ASSYNT (SCM_CONSP (vcell), x, |
73b64342 | 1130 | "Symbol's function definition is void", NULL); |
3201d763 | 1131 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (vcell) + scm_tc3_cons_gloc); |
73b64342 MD |
1132 | return x; |
1133 | } | |
1134 | ||
1135 | SCM_SYNTAX (s_atbind, "@bind", scm_makmmacro, scm_m_atbind); | |
1136 | ||
1137 | SCM | |
1138 | scm_m_atbind (SCM xorig, SCM env) | |
1139 | { | |
1140 | SCM x = SCM_CDR (xorig); | |
1141 | SCM_ASSYNT (scm_ilength (x) > 1, xorig, scm_s_expression, "@bind"); | |
1142 | ||
1143 | if (SCM_IMP (env)) | |
1144 | env = SCM_BOOL_F; | |
1145 | else | |
1146 | { | |
1147 | while (SCM_NIMP (SCM_CDR (env))) | |
1148 | env = SCM_CDR (env); | |
1149 | env = SCM_CAR (env); | |
1150 | if (SCM_CONSP (env)) | |
1151 | env = SCM_BOOL_F; | |
1152 | } | |
1153 | ||
1154 | x = SCM_CAR (x); | |
1155 | while (SCM_NIMP (x)) | |
1156 | { | |
3201d763 | 1157 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (scm_sym2vcell (SCM_CAR (x), env, SCM_BOOL_T)) + scm_tc3_cons_gloc); |
73b64342 MD |
1158 | x = SCM_CDR (x); |
1159 | } | |
1160 | return scm_cons (SCM_IM_BIND, SCM_CDR (xorig)); | |
1161 | } | |
73b64342 | 1162 | |
26d5b9b4 MD |
1163 | SCM |
1164 | scm_m_expand_body (SCM xorig, SCM env) | |
1165 | { | |
1166 | SCM form, x = SCM_CDR (xorig), defs = SCM_EOL; | |
1167 | char *what = SCM_ISYMCHARS (SCM_CAR (xorig)) + 2; | |
1168 | ||
1169 | while (SCM_NIMP (x)) | |
1170 | { | |
1171 | form = SCM_CAR (x); | |
1172 | if (SCM_IMP (form) || SCM_NCONSP (form)) | |
1173 | break; | |
1174 | if (SCM_IMP (SCM_CAR (form))) | |
1175 | break; | |
1176 | if (!SCM_SYMBOLP (SCM_CAR (form))) | |
1177 | break; | |
1178 | ||
3a3111a8 MD |
1179 | form = scm_macroexp (scm_cons_source (form, |
1180 | SCM_CAR (form), | |
1181 | SCM_CDR (form)), | |
1182 | env); | |
26d5b9b4 | 1183 | |
cf498326 | 1184 | if (SCM_EQ_P (SCM_IM_DEFINE, SCM_CAR (form))) |
26d5b9b4 MD |
1185 | { |
1186 | defs = scm_cons (SCM_CDR (form), defs); | |
1187 | x = SCM_CDR(x); | |
1188 | } | |
1189 | else if (SCM_NIMP(defs)) | |
1190 | { | |
1191 | break; | |
1192 | } | |
cf498326 | 1193 | else if (SCM_EQ_P (SCM_IM_BEGIN, SCM_CAR (form))) |
26d5b9b4 MD |
1194 | { |
1195 | x = scm_append (scm_cons2 (SCM_CDR (form), SCM_CDR (x), SCM_EOL)); | |
1196 | } | |
1197 | else | |
1198 | { | |
1199 | x = scm_cons (form, SCM_CDR(x)); | |
1200 | break; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | SCM_ASSYNT (SCM_NIMP (x), SCM_CDR (xorig), scm_s_body, what); | |
1205 | if (SCM_NIMP (defs)) | |
1206 | { | |
1207 | x = scm_cons (scm_m_letrec1 (SCM_IM_LETREC, | |
1208 | SCM_IM_DEFINE, | |
2f0d1375 | 1209 | scm_cons2 (scm_sym_define, defs, x), |
26d5b9b4 MD |
1210 | env), |
1211 | SCM_EOL); | |
1212 | } | |
1213 | ||
1214 | SCM_DEFER_INTS; | |
1215 | SCM_SETCAR (xorig, SCM_CAR (x)); | |
1216 | SCM_SETCDR (xorig, SCM_CDR (x)); | |
1217 | SCM_ALLOW_INTS; | |
1218 | ||
1219 | return xorig; | |
1220 | } | |
1221 | ||
1222 | SCM | |
1223 | scm_macroexp (SCM x, SCM env) | |
1224 | { | |
1225 | SCM res, proc; | |
1226 | ||
1227 | /* Don't bother to produce error messages here. We get them when we | |
1228 | eventually execute the code for real. */ | |
1229 | ||
1230 | macro_tail: | |
44d3cb0d | 1231 | if (!SCM_SYMBOLP (SCM_CAR (x))) |
26d5b9b4 MD |
1232 | return x; |
1233 | ||
1234 | #ifdef USE_THREADS | |
1235 | { | |
1236 | SCM *proc_ptr = scm_lookupcar1 (x, env, 0); | |
1237 | if (proc_ptr == NULL) | |
1238 | { | |
1239 | /* We have lost the race. */ | |
1240 | goto macro_tail; | |
1241 | } | |
1242 | proc = *proc_ptr; | |
1243 | } | |
1244 | #else | |
1245 | proc = *scm_lookupcar (x, env, 0); | |
1246 | #endif | |
1247 | ||
1248 | /* Only handle memoizing macros. `Acros' and `macros' are really | |
1249 | special forms and should not be evaluated here. */ | |
1250 | ||
1251 | if (SCM_IMP (proc) | |
1252 | || scm_tc16_macro != SCM_TYP16 (proc) | |
f1267706 | 1253 | || (int) (SCM_UNPACK_CAR (proc) >> 16) != 2) |
26d5b9b4 MD |
1254 | return x; |
1255 | ||
1256 | unmemocar (x, env); | |
1257 | res = scm_apply (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1258 | ||
1259 | if (scm_ilength (res) <= 0) | |
1260 | res = scm_cons2 (SCM_IM_BEGIN, res, SCM_EOL); | |
1261 | ||
26d5b9b4 MD |
1262 | SCM_DEFER_INTS; |
1263 | SCM_SETCAR (x, SCM_CAR (res)); | |
1264 | SCM_SETCDR (x, SCM_CDR (res)); | |
1265 | SCM_ALLOW_INTS; | |
1266 | ||
1267 | goto macro_tail; | |
1268 | } | |
73b64342 | 1269 | |
6dbd0af5 MD |
1270 | /* scm_unmemocopy takes a memoized expression together with its |
1271 | * environment and rewrites it to its original form. Thus, it is the | |
1272 | * inversion of the rewrite rules above. The procedure is not | |
1273 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1274 | * code of a closure, in scm_procedure_source, in display_frame when |
1275 | * generating the source for a stackframe in a backtrace, and in | |
1276 | * display_expression. | |
6dbd0af5 MD |
1277 | */ |
1278 | ||
26d5b9b4 MD |
1279 | /* We should introduce an anti-macro interface so that it is possible |
1280 | * to plug in transformers in both directions from other compilation | |
1281 | * units. unmemocopy could then dispatch to anti-macro transformers. | |
1282 | * (Those transformers could perhaps be written in slightly more | |
1283 | * readable style... :) | |
1284 | */ | |
1285 | ||
f1267706 | 1286 | #define SCM_BIT8(x) (127 & SCM_UNPACK (x)) |
c209c88e | 1287 | |
6dbd0af5 | 1288 | static SCM |
1bbd0b84 | 1289 | unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1290 | { |
1291 | SCM ls, z; | |
1292 | #ifdef DEBUG_EXTENSIONS | |
1293 | SCM p; | |
1294 | #endif | |
1295 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1296 | return x; | |
1297 | #ifdef DEBUG_EXTENSIONS | |
1298 | p = scm_whash_lookup (scm_source_whash, x); | |
1299 | #endif | |
1300 | switch (SCM_TYP7 (x)) | |
1301 | { | |
c209c88e | 1302 | case SCM_BIT8(SCM_IM_AND): |
2f0d1375 | 1303 | ls = z = scm_cons (scm_sym_and, SCM_UNSPECIFIED); |
6dbd0af5 | 1304 | break; |
c209c88e | 1305 | case SCM_BIT8(SCM_IM_BEGIN): |
2f0d1375 | 1306 | ls = z = scm_cons (scm_sym_begin, SCM_UNSPECIFIED); |
6dbd0af5 | 1307 | break; |
c209c88e | 1308 | case SCM_BIT8(SCM_IM_CASE): |
2f0d1375 | 1309 | ls = z = scm_cons (scm_sym_case, SCM_UNSPECIFIED); |
6dbd0af5 | 1310 | break; |
c209c88e | 1311 | case SCM_BIT8(SCM_IM_COND): |
2f0d1375 | 1312 | ls = z = scm_cons (scm_sym_cond, SCM_UNSPECIFIED); |
6dbd0af5 | 1313 | break; |
c209c88e | 1314 | case SCM_BIT8(SCM_IM_DO): |
2f0d1375 | 1315 | ls = scm_cons (scm_sym_do, SCM_UNSPECIFIED); |
6dbd0af5 | 1316 | goto transform; |
c209c88e | 1317 | case SCM_BIT8(SCM_IM_IF): |
2f0d1375 | 1318 | ls = z = scm_cons (scm_sym_if, SCM_UNSPECIFIED); |
6dbd0af5 | 1319 | break; |
c209c88e | 1320 | case SCM_BIT8(SCM_IM_LET): |
2f0d1375 | 1321 | ls = scm_cons (scm_sym_let, SCM_UNSPECIFIED); |
6dbd0af5 | 1322 | goto transform; |
c209c88e | 1323 | case SCM_BIT8(SCM_IM_LETREC): |
6dbd0af5 MD |
1324 | { |
1325 | SCM f, v, e, s; | |
2f0d1375 | 1326 | ls = scm_cons (scm_sym_letrec, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1327 | transform: |
1328 | x = SCM_CDR (x); | |
26d5b9b4 | 1329 | /* binding names */ |
6dbd0af5 MD |
1330 | f = v = SCM_CAR (x); |
1331 | x = SCM_CDR (x); | |
e2806c10 | 1332 | z = EXTEND_ENV (f, SCM_EOL, env); |
26d5b9b4 | 1333 | /* inits */ |
6dbd0af5 | 1334 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
cf498326 | 1335 | SCM_EQ_P (SCM_CAR (ls), scm_sym_letrec) ? z : env)); |
6dbd0af5 | 1336 | env = z; |
26d5b9b4 | 1337 | /* increments */ |
cf498326 | 1338 | s = SCM_EQ_P (SCM_CAR (ls), scm_sym_do) |
6dbd0af5 MD |
1339 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) |
1340 | : f; | |
26d5b9b4 | 1341 | /* build transformed binding list */ |
6dbd0af5 MD |
1342 | z = SCM_EOL; |
1343 | do | |
1344 | { | |
1345 | z = scm_acons (SCM_CAR (v), | |
1346 | scm_cons (SCM_CAR (e), | |
cf498326 | 1347 | SCM_EQ_P (SCM_CAR (s), SCM_CAR (v)) |
6dbd0af5 MD |
1348 | ? SCM_EOL |
1349 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1350 | z); | |
1351 | v = SCM_CDR (v); | |
1352 | e = SCM_CDR (e); | |
1353 | s = SCM_CDR (s); | |
1354 | } | |
ff467021 | 1355 | while (SCM_NIMP (v)); |
a23afe53 MD |
1356 | z = scm_cons (z, SCM_UNSPECIFIED); |
1357 | SCM_SETCDR (ls, z); | |
cf498326 | 1358 | if (SCM_EQ_P (SCM_CAR (ls), scm_sym_do)) |
6dbd0af5 MD |
1359 | { |
1360 | x = SCM_CDR (x); | |
26d5b9b4 | 1361 | /* test clause */ |
a23afe53 | 1362 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1363 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1364 | z = SCM_CDR (z); |
1365 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
26d5b9b4 MD |
1366 | /* body forms are now to be found in SCM_CDR (x) |
1367 | (this is how *real* code look like! :) */ | |
6dbd0af5 MD |
1368 | } |
1369 | break; | |
1370 | } | |
c209c88e | 1371 | case SCM_BIT8(SCM_IM_LETSTAR): |
6dbd0af5 MD |
1372 | { |
1373 | SCM b, y; | |
1374 | x = SCM_CDR (x); | |
1375 | b = SCM_CAR (x); | |
1376 | y = SCM_EOL; | |
1377 | if SCM_IMP (b) | |
1378 | { | |
e2806c10 | 1379 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1380 | goto letstar; |
1381 | } | |
1382 | y = z = scm_acons (SCM_CAR (b), | |
1383 | unmemocar ( | |
1384 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1385 | SCM_UNSPECIFIED); | |
e2806c10 | 1386 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1387 | b = SCM_CDR (SCM_CDR (b)); |
1388 | if (SCM_IMP (b)) | |
1389 | { | |
1390 | SCM_SETCDR (y, SCM_EOL); | |
2f0d1375 | 1391 | ls = scm_cons (scm_sym_let, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1392 | break; |
1393 | } | |
1394 | do | |
1395 | { | |
a23afe53 MD |
1396 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1397 | unmemocar ( | |
6dbd0af5 | 1398 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1399 | SCM_UNSPECIFIED)); |
1400 | z = SCM_CDR (z); | |
e2806c10 | 1401 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1402 | b = SCM_CDR (SCM_CDR (b)); |
1403 | } | |
ff467021 | 1404 | while (SCM_NIMP (b)); |
a23afe53 | 1405 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 | 1406 | letstar: |
2f0d1375 | 1407 | ls = scm_cons (scm_sym_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1408 | break; |
1409 | } | |
c209c88e | 1410 | case SCM_BIT8(SCM_IM_OR): |
2f0d1375 | 1411 | ls = z = scm_cons (scm_sym_or, SCM_UNSPECIFIED); |
6dbd0af5 | 1412 | break; |
c209c88e | 1413 | case SCM_BIT8(SCM_IM_LAMBDA): |
6dbd0af5 | 1414 | x = SCM_CDR (x); |
2f0d1375 | 1415 | ls = scm_cons (scm_sym_lambda, |
6dbd0af5 | 1416 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); |
e2806c10 | 1417 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 | 1418 | break; |
c209c88e | 1419 | case SCM_BIT8(SCM_IM_QUOTE): |
2f0d1375 | 1420 | ls = z = scm_cons (scm_sym_quote, SCM_UNSPECIFIED); |
6dbd0af5 | 1421 | break; |
c209c88e | 1422 | case SCM_BIT8(SCM_IM_SET_X): |
89efbff4 | 1423 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); |
6dbd0af5 | 1424 | break; |
c209c88e | 1425 | case SCM_BIT8(SCM_IM_DEFINE): |
6dbd0af5 MD |
1426 | { |
1427 | SCM n; | |
1428 | x = SCM_CDR (x); | |
2f0d1375 | 1429 | ls = scm_cons (scm_sym_define, |
6dbd0af5 MD |
1430 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); |
1431 | if (SCM_NNULLP (env)) | |
a23afe53 | 1432 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1433 | break; |
1434 | } | |
c209c88e | 1435 | case SCM_BIT8(SCM_MAKISYM (0)): |
6dbd0af5 MD |
1436 | z = SCM_CAR (x); |
1437 | if (!SCM_ISYMP (z)) | |
1438 | goto unmemo; | |
ff467021 | 1439 | switch (SCM_ISYMNUM (z)) |
6dbd0af5 MD |
1440 | { |
1441 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2f0d1375 | 1442 | ls = z = scm_cons (scm_sym_atapply, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1443 | goto loop; |
1444 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2f0d1375 | 1445 | ls = z = scm_cons (scm_sym_atcall_cc, SCM_UNSPECIFIED); |
6dbd0af5 | 1446 | goto loop; |
a570e93a MD |
1447 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
1448 | ls = z = scm_cons (scm_sym_delay, SCM_UNSPECIFIED); | |
1449 | x = SCM_CDR (x); | |
1450 | goto loop; | |
6dbd0af5 | 1451 | default: |
fa888178 | 1452 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1453 | } |
1454 | unmemo: | |
1455 | default: | |
1456 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1457 | SCM_UNSPECIFIED), | |
1458 | env); | |
1459 | } | |
1460 | loop: | |
1461 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 | 1462 | { |
44d3cb0d | 1463 | if (SCM_ISYMP (SCM_CAR (x))) |
26d5b9b4 MD |
1464 | /* skip body markers */ |
1465 | continue; | |
a23afe53 MD |
1466 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), |
1467 | SCM_UNSPECIFIED), | |
1468 | env)); | |
1469 | z = SCM_CDR (z); | |
1470 | } | |
1471 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1472 | #ifdef DEBUG_EXTENSIONS |
1473 | if (SCM_NFALSEP (p)) | |
1474 | scm_whash_insert (scm_source_whash, ls, p); | |
1475 | #endif | |
1476 | return ls; | |
1477 | } | |
1478 | ||
1cc91f1b | 1479 | |
6dbd0af5 | 1480 | SCM |
6e8d25a6 | 1481 | scm_unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1482 | { |
1483 | if (SCM_NNULLP (env)) | |
1484 | /* Make a copy of the lowest frame to protect it from | |
1485 | modifications by SCM_IM_DEFINE */ | |
1486 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1487 | else | |
1488 | return unmemocopy (x, env); | |
1489 | } | |
1490 | ||
cf7c17e9 | 1491 | #ifndef SCM_RECKLESS |
1cc91f1b | 1492 | |
0f2d19dd | 1493 | int |
6e8d25a6 | 1494 | scm_badargsp (SCM formals, SCM args) |
0f2d19dd | 1495 | { |
ff467021 | 1496 | while (SCM_NIMP (formals)) |
0f2d19dd | 1497 | { |
ff467021 JB |
1498 | if (SCM_NCONSP (formals)) |
1499 | return 0; | |
1500 | if (SCM_IMP(args)) | |
1501 | return 1; | |
0f2d19dd JB |
1502 | formals = SCM_CDR (formals); |
1503 | args = SCM_CDR (args); | |
1504 | } | |
1505 | return SCM_NNULLP (args) ? 1 : 0; | |
1506 | } | |
1507 | #endif | |
1508 | ||
1509 | ||
1510 | \f | |
6dbd0af5 | 1511 | SCM |
6e8d25a6 | 1512 | scm_eval_args (SCM l, SCM env, SCM proc) |
6dbd0af5 | 1513 | { |
680ed4a8 | 1514 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1515 | while (SCM_NIMP (l)) |
1516 | { | |
cf7c17e9 | 1517 | #ifdef SCM_CAUTIOUS |
44d3cb0d | 1518 | if (SCM_CONSP (l)) |
680ed4a8 MD |
1519 | { |
1520 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1521 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1522 | else |
1523 | res = EVALCELLCAR (l, env); | |
1524 | } | |
3201d763 | 1525 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1526 | { |
3201d763 DH |
1527 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1528 | if (vcell == 0) | |
680ed4a8 | 1529 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1530 | else |
1531 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1532 | } |
1533 | else | |
1534 | goto wrongnumargs; | |
1535 | #else | |
1536 | res = EVALCAR (l, env); | |
1537 | #endif | |
1538 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1539 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1540 | l = SCM_CDR (l); |
1541 | } | |
cf7c17e9 | 1542 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1543 | if (SCM_NNULLP (l)) |
1544 | { | |
1545 | wrongnumargs: | |
1546 | scm_wrong_num_args (proc); | |
1547 | } | |
1548 | #endif | |
1549 | return results; | |
6dbd0af5 | 1550 | } |
c4ac4d88 | 1551 | |
9de33deb MD |
1552 | SCM |
1553 | scm_eval_body (SCM code, SCM env) | |
1554 | { | |
1555 | SCM next; | |
1556 | again: | |
1557 | next = code; | |
1558 | while (SCM_NNULLP (next = SCM_CDR (next))) | |
1559 | { | |
1560 | if (SCM_IMP (SCM_CAR (code))) | |
1561 | { | |
1562 | if (SCM_ISYMP (SCM_CAR (code))) | |
1563 | { | |
1564 | code = scm_m_expand_body (code, env); | |
1565 | goto again; | |
1566 | } | |
1567 | } | |
1568 | else | |
1569 | SCM_XEVAL (SCM_CAR (code), env); | |
1570 | code = next; | |
1571 | } | |
1572 | return SCM_XEVALCAR (code, env); | |
1573 | } | |
1574 | ||
c4ac4d88 | 1575 | |
0f2d19dd JB |
1576 | #endif /* !DEVAL */ |
1577 | ||
6dbd0af5 MD |
1578 | |
1579 | /* SECTION: This code is specific for the debugging support. One | |
1580 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1581 | * defined. | |
1582 | */ | |
1583 | ||
1584 | #ifndef DEVAL | |
1585 | ||
1586 | #define SCM_APPLY scm_apply | |
1587 | #define PREP_APPLY(proc, args) | |
1588 | #define ENTER_APPLY | |
1589 | #define RETURN(x) return x; | |
b7ff98dd MD |
1590 | #ifdef STACK_CHECKING |
1591 | #ifndef NO_CEVAL_STACK_CHECKING | |
1592 | #define EVAL_STACK_CHECKING | |
1593 | #endif | |
6dbd0af5 MD |
1594 | #endif |
1595 | ||
1596 | #else /* !DEVAL */ | |
1597 | ||
0f2d19dd JB |
1598 | #undef SCM_CEVAL |
1599 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1600 | #undef SCM_APPLY | |
1601 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1602 | #undef PREP_APPLY |
1603 | #define PREP_APPLY(p, l) \ | |
1604 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1605 | #undef ENTER_APPLY | |
1606 | #define ENTER_APPLY \ | |
d3a6bc94 | 1607 | do { \ |
b7ff98dd | 1608 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1609 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1610 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1611 | {\ |
156dcb09 | 1612 | SCM tmp, tail = SCM_BOOL(SCM_TRACED_FRAME_P (debug)); \ |
c6a4fbce | 1613 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1614 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1615 | {\ |
c0ab1b8d | 1616 | tmp = scm_make_debugobj (&debug);\ |
2f0d1375 | 1617 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1618 | }\ |
6dbd0af5 MD |
1619 | else\ |
1620 | {\ | |
1621 | scm_make_cont (&tmp);\ | |
ca6ef71a | 1622 | if (!setjmp (SCM_JMPBUF (tmp)))\ |
2f0d1375 | 1623 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
6dbd0af5 MD |
1624 | }\ |
1625 | }\ | |
d3a6bc94 | 1626 | } while (0) |
0f2d19dd JB |
1627 | #undef RETURN |
1628 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1629 | #ifdef STACK_CHECKING |
1630 | #ifndef EVAL_STACK_CHECKING | |
1631 | #define EVAL_STACK_CHECKING | |
1632 | #endif | |
6dbd0af5 MD |
1633 | #endif |
1634 | ||
1635 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1636 | * *fixme*: Although efficiency is important here, this state variable | |
1637 | * should probably not be a global. It should be related to the | |
1638 | * current repl. | |
1639 | */ | |
1640 | ||
1cc91f1b | 1641 | |
1bbd0b84 | 1642 | SCM (*scm_ceval_ptr) (SCM x, SCM env); |
0f2d19dd | 1643 | |
1646d37b | 1644 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1645 | * information stack frame. It is accessed very often from the |
1646 | * debugging evaluator, so it should probably not be indirectly | |
1647 | * addressed. Better to save and restore it from the current root at | |
1648 | * any stack swaps. | |
1649 | */ | |
1650 | ||
1646d37b MD |
1651 | #ifndef USE_THREADS |
1652 | scm_debug_frame *scm_last_debug_frame; | |
1653 | #endif | |
6dbd0af5 MD |
1654 | |
1655 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1656 | * stack frames at each real stack frame. | |
1657 | */ | |
1658 | ||
1659 | int scm_debug_eframe_size; | |
1660 | ||
b7ff98dd | 1661 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1662 | |
a74145b8 MD |
1663 | int scm_eval_stack; |
1664 | ||
33b97402 | 1665 | scm_option scm_eval_opts[] = { |
a74145b8 | 1666 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1667 | }; |
1668 | ||
6dbd0af5 | 1669 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1670 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1671 | "*Flyweight representation of the stack at traps." }, | |
1672 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1673 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1674 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1675 | "Record procedure names at definition." }, | |
1676 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1677 | "Display backtrace in anti-chronological order." }, | |
274dc5fd | 1678 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, |
4e646a03 MD |
1679 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1680 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1681 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1682 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1683 | "Maximal number of stored backtrace frames." }, | |
1684 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1685 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1686 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1687 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1688 | }; |
1689 | ||
1690 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1691 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1692 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1693 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1694 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1695 | }; |
1696 | ||
a1ec6916 | 1697 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
1bbd0b84 | 1698 | (SCM setting), |
b380b885 | 1699 | "") |
1bbd0b84 | 1700 | #define FUNC_NAME s_scm_eval_options_interface |
33b97402 MD |
1701 | { |
1702 | SCM ans; | |
1703 | SCM_DEFER_INTS; | |
1704 | ans = scm_options (setting, | |
1705 | scm_eval_opts, | |
1706 | SCM_N_EVAL_OPTIONS, | |
1bbd0b84 | 1707 | FUNC_NAME); |
a74145b8 | 1708 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1709 | SCM_ALLOW_INTS; |
1710 | return ans; | |
1711 | } | |
1bbd0b84 | 1712 | #undef FUNC_NAME |
33b97402 | 1713 | |
a1ec6916 | 1714 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
1bbd0b84 | 1715 | (SCM setting), |
b380b885 | 1716 | "") |
1bbd0b84 | 1717 | #define FUNC_NAME s_scm_evaluator_traps |
33b97402 MD |
1718 | { |
1719 | SCM ans; | |
1720 | SCM_DEFER_INTS; | |
1721 | ans = scm_options (setting, | |
1722 | scm_evaluator_trap_table, | |
1723 | SCM_N_EVALUATOR_TRAPS, | |
1bbd0b84 | 1724 | FUNC_NAME); |
33b97402 | 1725 | SCM_RESET_DEBUG_MODE; |
bfc69694 | 1726 | SCM_ALLOW_INTS; |
33b97402 MD |
1727 | return ans; |
1728 | } | |
1bbd0b84 | 1729 | #undef FUNC_NAME |
33b97402 | 1730 | |
6dbd0af5 | 1731 | SCM |
6e8d25a6 | 1732 | scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc) |
0f2d19dd | 1733 | { |
680ed4a8 | 1734 | SCM *results = lloc, res; |
0f2d19dd JB |
1735 | while (SCM_NIMP (l)) |
1736 | { | |
cf7c17e9 | 1737 | #ifdef SCM_CAUTIOUS |
44d3cb0d | 1738 | if (SCM_CONSP (l)) |
680ed4a8 MD |
1739 | { |
1740 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1741 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1742 | else |
1743 | res = EVALCELLCAR (l, env); | |
1744 | } | |
3201d763 | 1745 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1746 | { |
3201d763 DH |
1747 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1748 | if (vcell == 0) | |
680ed4a8 | 1749 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1750 | else |
1751 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1752 | } |
1753 | else | |
1754 | goto wrongnumargs; | |
1755 | #else | |
1756 | res = EVALCAR (l, env); | |
1757 | #endif | |
1758 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1759 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1760 | l = SCM_CDR (l); |
1761 | } | |
cf7c17e9 | 1762 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1763 | if (SCM_NNULLP (l)) |
1764 | { | |
1765 | wrongnumargs: | |
1766 | scm_wrong_num_args (proc); | |
1767 | } | |
1768 | #endif | |
1769 | return *results; | |
0f2d19dd JB |
1770 | } |
1771 | ||
6dbd0af5 MD |
1772 | #endif /* !DEVAL */ |
1773 | ||
1774 | ||
1775 | /* SECTION: Some local definitions for the evaluator. | |
1776 | */ | |
1777 | ||
1778 | #ifndef DEVAL | |
3201d763 | 1779 | #define CHECK_EQVISH(A,B) (SCM_EQ_P ((A), (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) |
6dbd0af5 MD |
1780 | #endif /* DEVAL */ |
1781 | ||
399dedcc | 1782 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1783 | |
1784 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1785 | * three heads. This code is compiled twice. | |
1786 | */ | |
1787 | ||
0f2d19dd | 1788 | #if 0 |
1cc91f1b | 1789 | |
0f2d19dd | 1790 | SCM |
1bbd0b84 | 1791 | scm_ceval (SCM x, SCM env) |
0f2d19dd JB |
1792 | {} |
1793 | #endif | |
1794 | #if 0 | |
1cc91f1b | 1795 | |
0f2d19dd | 1796 | SCM |
1bbd0b84 | 1797 | scm_deval (SCM x, SCM env) |
0f2d19dd JB |
1798 | {} |
1799 | #endif | |
1800 | ||
6dbd0af5 | 1801 | SCM |
1bbd0b84 | 1802 | SCM_CEVAL (SCM x, SCM env) |
0f2d19dd JB |
1803 | { |
1804 | union | |
1805 | { | |
1806 | SCM *lloc; | |
1807 | SCM arg1; | |
f8769b1d | 1808 | } t; |
6dbd0af5 MD |
1809 | SCM proc, arg2; |
1810 | #ifdef DEVAL | |
c0ab1b8d JB |
1811 | scm_debug_frame debug; |
1812 | scm_debug_info *debug_info_end; | |
1646d37b | 1813 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1814 | debug.status = scm_debug_eframe_size; |
04b6c081 MD |
1815 | /* |
1816 | * The debug.vect contains twice as much scm_debug_info frames as the | |
1817 | * user has specified with (debug-set! frames <n>). | |
1818 | * | |
1819 | * Even frames are eval frames, odd frames are apply frames. | |
1820 | */ | |
c0ab1b8d JB |
1821 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1822 | * sizeof (debug.vect[0])); | |
1823 | debug.info = debug.vect; | |
1824 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1825 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1826 | #endif |
b7ff98dd | 1827 | #ifdef EVAL_STACK_CHECKING |
6f13f9cb MD |
1828 | if (scm_stack_checking_enabled_p |
1829 | && SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc)) | |
6dbd0af5 | 1830 | { |
b7ff98dd | 1831 | #ifdef DEVAL |
6dbd0af5 MD |
1832 | debug.info->e.exp = x; |
1833 | debug.info->e.env = env; | |
b7ff98dd | 1834 | #endif |
6dbd0af5 MD |
1835 | scm_report_stack_overflow (); |
1836 | } | |
1837 | #endif | |
1838 | #ifdef DEVAL | |
1839 | goto start; | |
1840 | #endif | |
1841 | loopnoap: | |
1842 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1843 | loop: | |
1844 | #ifdef DEVAL | |
b7ff98dd MD |
1845 | SCM_CLEAR_ARGSREADY (debug); |
1846 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1847 | --debug.info; |
04b6c081 MD |
1848 | /* |
1849 | * In theory, this should be the only place where it is necessary to | |
1850 | * check for space in debug.vect since both eval frames and | |
1851 | * available space are even. | |
1852 | * | |
1853 | * For this to be the case, however, it is necessary that primitive | |
1854 | * special forms which jump back to `loop', `begin' or some similar | |
1855 | * label call PREP_APPLY. A convenient way to do this is to jump to | |
1856 | * `loopnoap' or `cdrxnoap'. | |
1857 | */ | |
c0ab1b8d | 1858 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1859 | { |
b7ff98dd | 1860 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1861 | debug.info -= 2; |
1862 | } | |
1863 | start: | |
1864 | debug.info->e.exp = x; | |
1865 | debug.info->e.env = env; | |
b6d75948 | 1866 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1867 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1868 | { |
156dcb09 | 1869 | SCM tail = SCM_BOOL(SCM_TAILRECP (debug)); |
b7ff98dd | 1870 | SCM_SET_TAILREC (debug); |
b7ff98dd | 1871 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1872 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1873 | else |
1874 | { | |
1875 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1876 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1877 | { |
1878 | x = SCM_THROW_VALUE (t.arg1); | |
1879 | if (SCM_IMP (x)) | |
1880 | { | |
1881 | RETURN (x); | |
1882 | } | |
1883 | else | |
1884 | /* This gives the possibility for the debugger to | |
1885 | modify the source expression before evaluation. */ | |
1886 | goto dispatch; | |
1887 | } | |
1888 | } | |
2f0d1375 | 1889 | scm_ithrow (scm_sym_enter_frame, |
6dbd0af5 MD |
1890 | scm_cons2 (t.arg1, tail, |
1891 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1892 | 0); | |
1893 | } | |
6dbd0af5 | 1894 | #endif |
e3173f93 | 1895 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1896 | dispatch: |
e3173f93 | 1897 | #endif |
9cb5124f | 1898 | SCM_TICK; |
0f2d19dd JB |
1899 | switch (SCM_TYP7 (x)) |
1900 | { | |
1901 | case scm_tcs_symbols: | |
1902 | /* Only happens when called at top level. | |
1903 | */ | |
1904 | x = scm_cons (x, SCM_UNDEFINED); | |
1905 | goto retval; | |
1906 | ||
c209c88e | 1907 | case SCM_BIT8(SCM_IM_AND): |
0f2d19dd JB |
1908 | x = SCM_CDR (x); |
1909 | t.arg1 = x; | |
1910 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1911 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1912 | { | |
1913 | RETURN (SCM_BOOL_F); | |
1914 | } | |
1915 | else | |
1916 | x = t.arg1; | |
6dbd0af5 | 1917 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1918 | goto carloop; |
1919 | ||
c209c88e | 1920 | case SCM_BIT8(SCM_IM_BEGIN): |
6dbd0af5 MD |
1921 | cdrxnoap: |
1922 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1923 | cdrxbegin: |
1924 | x = SCM_CDR (x); | |
1925 | ||
1926 | begin: | |
1927 | t.arg1 = x; | |
1928 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1929 | { | |
26d5b9b4 MD |
1930 | if (SCM_IMP (SCM_CAR (x))) |
1931 | { | |
1932 | if (SCM_ISYMP (SCM_CAR (x))) | |
1933 | { | |
1934 | x = scm_m_expand_body (x, env); | |
1935 | goto begin; | |
1936 | } | |
1937 | } | |
1938 | else | |
1939 | SCM_CEVAL (SCM_CAR (x), env); | |
0f2d19dd JB |
1940 | x = t.arg1; |
1941 | } | |
1942 | ||
1943 | carloop: /* scm_eval car of last form in list */ | |
1944 | if (SCM_NCELLP (SCM_CAR (x))) | |
1945 | { | |
1946 | x = SCM_CAR (x); | |
6cb702da | 1947 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1948 | } |
1949 | ||
1950 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1951 | { | |
1952 | retval: | |
26d5b9b4 | 1953 | RETURN (*scm_lookupcar (x, env, 1)) |
0f2d19dd JB |
1954 | } |
1955 | ||
1956 | x = SCM_CAR (x); | |
1957 | goto loop; /* tail recurse */ | |
1958 | ||
1959 | ||
c209c88e | 1960 | case SCM_BIT8(SCM_IM_CASE): |
0f2d19dd JB |
1961 | x = SCM_CDR (x); |
1962 | t.arg1 = EVALCAR (x, env); | |
1963 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1964 | { | |
1965 | proc = SCM_CAR (x); | |
cf498326 | 1966 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (proc))) |
0f2d19dd JB |
1967 | { |
1968 | x = SCM_CDR (proc); | |
6dbd0af5 | 1969 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1970 | goto begin; |
1971 | } | |
1972 | proc = SCM_CAR (proc); | |
1973 | while (SCM_NIMP (proc)) | |
1974 | { | |
1975 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1976 | { | |
1977 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1978 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1979 | goto begin; |
1980 | } | |
1981 | proc = SCM_CDR (proc); | |
1982 | } | |
1983 | } | |
6dbd0af5 | 1984 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1985 | |
1986 | ||
c209c88e | 1987 | case SCM_BIT8(SCM_IM_COND): |
0f2d19dd JB |
1988 | while (SCM_NIMP (x = SCM_CDR (x))) |
1989 | { | |
1990 | proc = SCM_CAR (x); | |
1991 | t.arg1 = EVALCAR (proc, env); | |
1992 | if (SCM_NFALSEP (t.arg1)) | |
1993 | { | |
1994 | x = SCM_CDR (proc); | |
6dbd0af5 | 1995 | if SCM_NULLP (x) |
0f2d19dd | 1996 | { |
6dbd0af5 | 1997 | RETURN (t.arg1) |
0f2d19dd | 1998 | } |
cf498326 | 1999 | if (! SCM_EQ_P (scm_sym_arrow, SCM_CAR (x))) |
6dbd0af5 MD |
2000 | { |
2001 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2002 | goto begin; | |
2003 | } | |
0f2d19dd JB |
2004 | proc = SCM_CDR (x); |
2005 | proc = EVALCAR (proc, env); | |
2006 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2007 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2008 | ENTER_APPLY; | |
0f2d19dd JB |
2009 | goto evap1; |
2010 | } | |
2011 | } | |
6dbd0af5 | 2012 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2013 | |
2014 | ||
c209c88e | 2015 | case SCM_BIT8(SCM_IM_DO): |
0f2d19dd JB |
2016 | x = SCM_CDR (x); |
2017 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
2018 | t.arg1 = SCM_EOL; /* values */ | |
2019 | while (SCM_NIMP (proc)) | |
2020 | { | |
2021 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2022 | proc = SCM_CDR (proc); | |
2023 | } | |
e2806c10 | 2024 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
2025 | x = SCM_CDR (SCM_CDR (x)); |
2026 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
2027 | { | |
f3d2630a | 2028 | for (proc = SCM_CADR (x); SCM_NIMP (proc); proc = SCM_CDR (proc)) |
0f2d19dd JB |
2029 | { |
2030 | t.arg1 = SCM_CAR (proc); /* body */ | |
2031 | SIDEVAL (t.arg1, env); | |
2032 | } | |
f3d2630a MD |
2033 | for (t.arg1 = SCM_EOL, proc = SCM_CDDR (x); |
2034 | SCM_NIMP (proc); | |
2035 | proc = SCM_CDR (proc)) | |
0f2d19dd | 2036 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ |
e2806c10 | 2037 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
2038 | } |
2039 | x = SCM_CDR (proc); | |
2040 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
2041 | RETURN (SCM_UNSPECIFIED); |
2042 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
2043 | goto begin; |
2044 | ||
2045 | ||
c209c88e | 2046 | case SCM_BIT8(SCM_IM_IF): |
0f2d19dd JB |
2047 | x = SCM_CDR (x); |
2048 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
2049 | x = SCM_CDR (x); | |
2050 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
2051 | { | |
2052 | RETURN (SCM_UNSPECIFIED); | |
2053 | } | |
6dbd0af5 | 2054 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2055 | goto carloop; |
2056 | ||
2057 | ||
c209c88e | 2058 | case SCM_BIT8(SCM_IM_LET): |
0f2d19dd JB |
2059 | x = SCM_CDR (x); |
2060 | proc = SCM_CAR (SCM_CDR (x)); | |
2061 | t.arg1 = SCM_EOL; | |
2062 | do | |
2063 | { | |
2064 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2065 | } | |
2066 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 2067 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 2068 | x = SCM_CDR (x); |
6dbd0af5 | 2069 | goto cdrxnoap; |
0f2d19dd JB |
2070 | |
2071 | ||
c209c88e | 2072 | case SCM_BIT8(SCM_IM_LETREC): |
0f2d19dd | 2073 | x = SCM_CDR (x); |
e2806c10 | 2074 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
2075 | x = SCM_CDR (x); |
2076 | proc = SCM_CAR (x); | |
2077 | t.arg1 = SCM_EOL; | |
2078 | do | |
2079 | { | |
2080 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2081 | } | |
2082 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 2083 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 2084 | goto cdrxnoap; |
0f2d19dd JB |
2085 | |
2086 | ||
c209c88e | 2087 | case SCM_BIT8(SCM_IM_LETSTAR): |
0f2d19dd JB |
2088 | x = SCM_CDR (x); |
2089 | proc = SCM_CAR (x); | |
2090 | if (SCM_IMP (proc)) | |
2091 | { | |
e2806c10 | 2092 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 2093 | goto cdrxnoap; |
0f2d19dd JB |
2094 | } |
2095 | do | |
2096 | { | |
2097 | t.arg1 = SCM_CAR (proc); | |
2098 | proc = SCM_CDR (proc); | |
e2806c10 | 2099 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
2100 | } |
2101 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 2102 | goto cdrxnoap; |
0f2d19dd | 2103 | |
c209c88e | 2104 | case SCM_BIT8(SCM_IM_OR): |
0f2d19dd JB |
2105 | x = SCM_CDR (x); |
2106 | t.arg1 = x; | |
2107 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
2108 | { | |
2109 | x = EVALCAR (x, env); | |
2110 | if (SCM_NFALSEP (x)) | |
2111 | { | |
2112 | RETURN (x); | |
2113 | } | |
2114 | x = t.arg1; | |
2115 | } | |
6dbd0af5 | 2116 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2117 | goto carloop; |
2118 | ||
2119 | ||
c209c88e | 2120 | case SCM_BIT8(SCM_IM_LAMBDA): |
0f2d19dd JB |
2121 | RETURN (scm_closure (SCM_CDR (x), env)); |
2122 | ||
2123 | ||
c209c88e | 2124 | case SCM_BIT8(SCM_IM_QUOTE): |
0f2d19dd JB |
2125 | RETURN (SCM_CAR (SCM_CDR (x))); |
2126 | ||
2127 | ||
c209c88e | 2128 | case SCM_BIT8(SCM_IM_SET_X): |
0f2d19dd JB |
2129 | x = SCM_CDR (x); |
2130 | proc = SCM_CAR (x); | |
3201d763 | 2131 | switch (SCM_ITAG3 (proc)) |
0f2d19dd | 2132 | { |
3201d763 | 2133 | case scm_tc3_cons: |
26d5b9b4 | 2134 | t.lloc = scm_lookupcar (x, env, 1); |
0f2d19dd | 2135 | break; |
3201d763 | 2136 | case scm_tc3_cons_gloc: |
a23afe53 | 2137 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
2138 | break; |
2139 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 2140 | case scm_tc3_imm24: |
0f2d19dd JB |
2141 | t.lloc = scm_ilookup (proc, env); |
2142 | break; | |
2143 | #endif | |
2144 | } | |
2145 | x = SCM_CDR (x); | |
2146 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
2147 | #ifdef SICP |
2148 | RETURN (*t.lloc); | |
2149 | #else | |
2150 | RETURN (SCM_UNSPECIFIED); | |
2151 | #endif | |
2152 | ||
2153 | ||
c209c88e | 2154 | case SCM_BIT8(SCM_IM_DEFINE): /* only for internal defines */ |
26d5b9b4 MD |
2155 | scm_misc_error (NULL, "Bad define placement", SCM_EOL); |
2156 | ||
0f2d19dd | 2157 | /* new syntactic forms go here. */ |
c209c88e | 2158 | case SCM_BIT8(SCM_MAKISYM (0)): |
0f2d19dd JB |
2159 | proc = SCM_CAR (x); |
2160 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
2161 | switch SCM_ISYMNUM (proc) | |
2162 | { | |
2163 | #if 0 | |
2164 | case (SCM_ISYMNUM (IM_VREF)): | |
2165 | { | |
2166 | SCM var; | |
2167 | var = SCM_CAR (SCM_CDR (x)); | |
2168 | RETURN (SCM_CDR(var)); | |
2169 | } | |
2170 | case (SCM_ISYMNUM (IM_VSET)): | |
2171 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
2172 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 2173 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2174 | #endif |
2175 | ||
2176 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2177 | proc = SCM_CDR (x); | |
2178 | proc = EVALCAR (proc, env); | |
2179 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
2180 | if (SCM_CLOSUREP (proc)) | |
2181 | { | |
1609038c | 2182 | SCM argl, tl; |
6dbd0af5 | 2183 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
2184 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
2185 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
2186 | #ifdef DEVAL |
2187 | debug.info->a.args = t.arg1; | |
2188 | #endif | |
cf7c17e9 | 2189 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
2190 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
2191 | goto wrongnumargs; | |
2192 | #endif | |
c79450dd | 2193 | ENTER_APPLY; |
1609038c MD |
2194 | /* Copy argument list */ |
2195 | if (SCM_IMP (t.arg1)) | |
2196 | argl = t.arg1; | |
2197 | else | |
2198 | { | |
2199 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
2200 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
2201 | && SCM_CONSP (t.arg1)) | |
2202 | { | |
2203 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
2204 | SCM_UNSPECIFIED)); | |
2205 | tl = SCM_CDR (tl); | |
2206 | } | |
2207 | SCM_SETCDR (tl, t.arg1); | |
2208 | } | |
2209 | ||
2210 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
2211 | x = SCM_CODE (proc); |
2212 | goto cdrxbegin; | |
2213 | } | |
81123e6d | 2214 | proc = scm_f_apply; |
0f2d19dd JB |
2215 | goto evapply; |
2216 | ||
2217 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2218 | scm_make_cont (&t.arg1); | |
ca6ef71a | 2219 | if (setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
2220 | { |
2221 | SCM val; | |
2222 | val = SCM_THROW_VALUE (t.arg1); | |
a570e93a | 2223 | RETURN (val) |
0f2d19dd JB |
2224 | } |
2225 | proc = SCM_CDR (x); | |
2226 | proc = evalcar (proc, env); | |
2227 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2228 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2229 | ENTER_APPLY; | |
0f2d19dd JB |
2230 | goto evap1; |
2231 | ||
a570e93a MD |
2232 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
2233 | RETURN (scm_makprom (scm_closure (SCM_CDR (x), env))) | |
2234 | ||
89efbff4 | 2235 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
195847fa MD |
2236 | proc = SCM_CADR (x); /* unevaluated operands */ |
2237 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2238 | if (SCM_IMP (proc)) | |
2239 | arg2 = *scm_ilookup (proc, env); | |
2240 | else if (SCM_NCONSP (proc)) | |
2241 | { | |
2242 | if (SCM_NCELLP (proc)) | |
2243 | arg2 = SCM_GLOC_VAL (proc); | |
2244 | else | |
2245 | arg2 = *scm_lookupcar (SCM_CDR (x), env, 1); | |
2246 | } | |
2247 | else | |
2248 | { | |
2249 | arg2 = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2250 | t.lloc = SCM_CDRLOC (arg2); | |
2251 | while (SCM_NIMP (proc = SCM_CDR (proc))) | |
2252 | { | |
2253 | *t.lloc = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2254 | t.lloc = SCM_CDRLOC (*t.lloc); | |
2255 | } | |
2256 | } | |
2257 | ||
2258 | type_dispatch: | |
61364ba6 MD |
2259 | /* The type dispatch code is duplicated here |
2260 | * (c.f. objects.c:scm_mcache_compute_cmethod) since that | |
2261 | * cuts down execution time for type dispatch to 50%. | |
2262 | */ | |
2263 | { | |
2264 | int i, n, end, mask; | |
2265 | SCM z = SCM_CDDR (x); | |
2266 | n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */ | |
2267 | proc = SCM_CADR (z); | |
2268 | ||
2269 | if (SCM_NIMP (proc)) | |
2270 | { | |
2271 | /* Prepare for linear search */ | |
2272 | mask = -1; | |
2273 | i = 0; | |
2274 | end = SCM_LENGTH (proc); | |
2275 | } | |
2276 | else | |
2277 | { | |
2278 | /* Compute a hash value */ | |
2279 | int hashset = SCM_INUM (proc); | |
2280 | int j = n; | |
2281 | mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z))); | |
2282 | proc = SCM_CADR (z); | |
2283 | i = 0; | |
2284 | t.arg1 = arg2; | |
2285 | if (SCM_NIMP (t.arg1)) | |
2286 | do | |
2287 | { | |
d8c40b9f DH |
2288 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1))) |
2289 | [scm_si_hashsets + hashset]; | |
61364ba6 MD |
2290 | t.arg1 = SCM_CDR (t.arg1); |
2291 | } | |
2292 | while (--j && SCM_NIMP (t.arg1)); | |
2293 | i &= mask; | |
2294 | end = i; | |
2295 | } | |
2296 | ||
2297 | /* Search for match */ | |
2298 | do | |
2299 | { | |
2300 | int j = n; | |
2301 | z = SCM_VELTS (proc)[i]; | |
2302 | t.arg1 = arg2; /* list of arguments */ | |
2303 | if (SCM_NIMP (t.arg1)) | |
2304 | do | |
2305 | { | |
2306 | /* More arguments than specifiers => CLASS != ENV */ | |
cf498326 | 2307 | if (! SCM_EQ_P (scm_class_of (SCM_CAR (t.arg1)), SCM_CAR (z))) |
61364ba6 MD |
2308 | goto next_method; |
2309 | t.arg1 = SCM_CDR (t.arg1); | |
2310 | z = SCM_CDR (z); | |
2311 | } | |
2312 | while (--j && SCM_NIMP (t.arg1)); | |
2313 | /* Fewer arguments than specifiers => CAR != ENV */ | |
2314 | if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))) | |
2315 | goto next_method; | |
2316 | apply_cmethod: | |
2317 | env = EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (z)), | |
2318 | arg2, | |
2319 | SCM_CMETHOD_ENV (z)); | |
2320 | x = SCM_CMETHOD_CODE (z); | |
2321 | goto cdrxbegin; | |
2322 | next_method: | |
2323 | i = (i + 1) & mask; | |
2324 | } while (i != end); | |
2325 | ||
2326 | z = scm_memoize_method (x, arg2); | |
2327 | goto apply_cmethod; | |
2328 | } | |
73b64342 | 2329 | |
ca4be6ea MD |
2330 | case (SCM_ISYMNUM (SCM_IM_SLOT_REF)): |
2331 | x = SCM_CDR (x); | |
2332 | t.arg1 = EVALCAR (x, env); | |
d8c40b9f | 2333 | RETURN (SCM_PACK (SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CADR (x))])) |
ca4be6ea MD |
2334 | |
2335 | case (SCM_ISYMNUM (SCM_IM_SLOT_SET_X)): | |
2336 | x = SCM_CDR (x); | |
2337 | t.arg1 = EVALCAR (x, env); | |
2338 | x = SCM_CDR (x); | |
2339 | proc = SCM_CDR (x); | |
d8c40b9f DH |
2340 | SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CAR (x))] |
2341 | = SCM_UNPACK (EVALCAR (proc, env)); | |
5623a9b4 | 2342 | RETURN (SCM_UNSPECIFIED) |
ca4be6ea | 2343 | |
73b64342 MD |
2344 | case (SCM_ISYMNUM (SCM_IM_NIL_COND)): |
2345 | proc = SCM_CDR (x); | |
2346 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2347 | { | |
2348 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2349 | || SCM_EQ_P (t.arg1, scm_lisp_nil))) |
73b64342 | 2350 | { |
cf498326 | 2351 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2352 | RETURN (t.arg1); |
2353 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2354 | goto carloop; | |
2355 | } | |
2356 | proc = SCM_CDR (x); | |
2357 | } | |
2358 | x = proc; | |
2359 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2360 | goto carloop; | |
2361 | ||
2362 | case (SCM_ISYMNUM (SCM_IM_NIL_IFY)): | |
2363 | x = SCM_CDR (x); | |
2364 | RETURN ((SCM_FALSEP (proc = EVALCAR (x, env)) || SCM_NULLP (proc)) | |
43a912cf | 2365 | ? scm_lisp_nil |
73b64342 MD |
2366 | : proc) |
2367 | ||
2368 | case (SCM_ISYMNUM (SCM_IM_T_IFY)): | |
2369 | x = SCM_CDR (x); | |
43a912cf | 2370 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) ? scm_lisp_t : scm_lisp_nil) |
73b64342 MD |
2371 | |
2372 | case (SCM_ISYMNUM (SCM_IM_0_COND)): | |
2373 | proc = SCM_CDR (x); | |
2374 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2375 | { | |
2376 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2377 | || SCM_EQ_P (t.arg1, SCM_INUM0))) |
73b64342 | 2378 | { |
cf498326 | 2379 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2380 | RETURN (t.arg1); |
2381 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2382 | goto carloop; | |
2383 | } | |
2384 | proc = SCM_CDR (x); | |
2385 | } | |
2386 | x = proc; | |
2387 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2388 | goto carloop; | |
2389 | ||
2390 | case (SCM_ISYMNUM (SCM_IM_0_IFY)): | |
2391 | x = SCM_CDR (x); | |
2392 | RETURN (SCM_FALSEP (proc = EVALCAR (x, env)) | |
2393 | ? SCM_INUM0 | |
2394 | : proc) | |
2395 | ||
2396 | case (SCM_ISYMNUM (SCM_IM_1_IFY)): | |
2397 | x = SCM_CDR (x); | |
2398 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) | |
2399 | ? SCM_MAKINUM (1) | |
2400 | : SCM_INUM0) | |
2401 | ||
2402 | case (SCM_ISYMNUM (SCM_IM_BIND)): | |
2403 | x = SCM_CDR (x); | |
2404 | ||
2405 | t.arg1 = SCM_CAR (x); | |
2406 | arg2 = SCM_CDAR (env); | |
2407 | while (SCM_NIMP (arg2)) | |
2408 | { | |
2409 | proc = SCM_GLOC_VAL (SCM_CAR (t.arg1)); | |
a963f787 MD |
2410 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2411 | SCM_CAR (arg2)); | |
73b64342 MD |
2412 | SCM_SETCAR (arg2, proc); |
2413 | t.arg1 = SCM_CDR (t.arg1); | |
2414 | arg2 = SCM_CDR (arg2); | |
2415 | } | |
2416 | t.arg1 = SCM_CAR (x); | |
2417 | scm_dynwinds = scm_acons (t.arg1, SCM_CDAR (env), scm_dynwinds); | |
89efbff4 | 2418 | |
73b64342 MD |
2419 | arg2 = x = SCM_CDR (x); |
2420 | while (SCM_NNULLP (arg2 = SCM_CDR (arg2))) | |
2421 | { | |
2422 | SIDEVAL (SCM_CAR (x), env); | |
2423 | x = arg2; | |
2424 | } | |
2425 | proc = EVALCAR (x, env); | |
2426 | ||
2427 | scm_dynwinds = SCM_CDR (scm_dynwinds); | |
2428 | arg2 = SCM_CDAR (env); | |
2429 | while (SCM_NIMP (arg2)) | |
2430 | { | |
a963f787 MD |
2431 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2432 | SCM_CAR (arg2)); | |
73b64342 MD |
2433 | t.arg1 = SCM_CDR (t.arg1); |
2434 | arg2 = SCM_CDR (arg2); | |
2435 | } | |
2436 | ||
2437 | RETURN (proc) | |
2438 | ||
0f2d19dd JB |
2439 | default: |
2440 | goto badfun; | |
2441 | } | |
2442 | ||
2443 | default: | |
2444 | proc = x; | |
2445 | badfun: | |
f5bf2977 | 2446 | /* scm_everr (x, env,...) */ |
523f5266 | 2447 | scm_misc_error (NULL, |
70d63753 | 2448 | "Wrong type to apply: ~S", |
523f5266 | 2449 | scm_listify (proc, SCM_UNDEFINED)); |
0f2d19dd JB |
2450 | case scm_tc7_vector: |
2451 | case scm_tc7_wvect: | |
afe5177e | 2452 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
2453 | case scm_tc7_bvect: |
2454 | case scm_tc7_byvect: | |
2455 | case scm_tc7_svect: | |
2456 | case scm_tc7_ivect: | |
2457 | case scm_tc7_uvect: | |
2458 | case scm_tc7_fvect: | |
2459 | case scm_tc7_dvect: | |
2460 | case scm_tc7_cvect: | |
5c11cc9d | 2461 | #ifdef HAVE_LONG_LONGS |
0f2d19dd | 2462 | case scm_tc7_llvect: |
afe5177e | 2463 | #endif |
0f2d19dd JB |
2464 | #endif |
2465 | case scm_tc7_string: | |
0f2d19dd | 2466 | case scm_tc7_substring: |
0f2d19dd JB |
2467 | case scm_tc7_smob: |
2468 | case scm_tcs_closures: | |
224822be MD |
2469 | #ifdef CCLO |
2470 | case scm_tc7_cclo: | |
2471 | #endif | |
89efbff4 | 2472 | case scm_tc7_pws: |
0f2d19dd JB |
2473 | case scm_tcs_subrs: |
2474 | RETURN (x); | |
2475 | ||
2476 | #ifdef MEMOIZE_LOCALS | |
c209c88e | 2477 | case SCM_BIT8(SCM_ILOC00): |
0f2d19dd JB |
2478 | proc = *scm_ilookup (SCM_CAR (x), env); |
2479 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2480 | #ifndef SCM_RECKLESS |
2481 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2482 | goto checkargs; |
2483 | #endif | |
2484 | #endif | |
2485 | break; | |
2486 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2487 | ||
2488 | ||
3201d763 DH |
2489 | case scm_tcs_cons_gloc: { |
2490 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; | |
2491 | if (vcell == 0) { | |
aa00bd1e MD |
2492 | /* This is a struct implanted in the code, not a gloc. */ |
2493 | RETURN (x); | |
3201d763 DH |
2494 | } else { |
2495 | proc = SCM_PACK (vcell); | |
2496 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2497 | #ifndef SCM_RECKLESS |
2498 | #ifdef SCM_CAUTIOUS | |
3201d763 | 2499 | goto checkargs; |
0f2d19dd JB |
2500 | #endif |
2501 | #endif | |
3201d763 | 2502 | } |
0f2d19dd | 2503 | break; |
3201d763 | 2504 | } |
0f2d19dd JB |
2505 | |
2506 | case scm_tcs_cons_nimcar: | |
2507 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2508 | { | |
f8769b1d | 2509 | #ifdef USE_THREADS |
26d5b9b4 | 2510 | t.lloc = scm_lookupcar1 (x, env, 1); |
f8769b1d MV |
2511 | if (t.lloc == NULL) |
2512 | { | |
2513 | /* we have lost the race, start again. */ | |
2514 | goto dispatch; | |
2515 | } | |
2516 | proc = *t.lloc; | |
2517 | #else | |
26d5b9b4 | 2518 | proc = *scm_lookupcar (x, env, 1); |
f8769b1d MV |
2519 | #endif |
2520 | ||
0f2d19dd JB |
2521 | if (SCM_IMP (proc)) |
2522 | { | |
2523 | unmemocar (x, env); | |
2524 | goto badfun; | |
2525 | } | |
2526 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2527 | { | |
2528 | unmemocar (x, env); | |
2529 | ||
2530 | handle_a_macro: | |
368bf056 | 2531 | #ifdef DEVAL |
7c354052 MD |
2532 | /* Set a flag during macro expansion so that macro |
2533 | application frames can be deleted from the backtrace. */ | |
2534 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2535 | #endif |
f8769b1d MV |
2536 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2537 | scm_cons (env, scm_listofnull)); | |
2538 | ||
7c354052 MD |
2539 | #ifdef DEVAL |
2540 | SCM_CLEAR_MACROEXP (debug); | |
2541 | #endif | |
f1267706 | 2542 | switch ((int) (SCM_UNPACK_CAR (proc) >> 16)) |
0f2d19dd JB |
2543 | { |
2544 | case 2: | |
2545 | if (scm_ilength (t.arg1) <= 0) | |
2546 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2547 | #ifdef DEVAL |
2548 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2549 | { | |
f8769b1d | 2550 | |
6dbd0af5 MD |
2551 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2552 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2553 | /* Prevent memoizing result of define macro */ | |
2554 | { | |
2555 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2556 | scm_set_source_properties_x (debug.info->e.exp, | |
2557 | scm_source_properties (x)); | |
2558 | } | |
2559 | #endif | |
2560 | SCM_DEFER_INTS; | |
a23afe53 MD |
2561 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2562 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2563 | SCM_ALLOW_INTS; |
2564 | goto dispatch; | |
2565 | } | |
2566 | /* Prevent memoizing of debug info expression. */ | |
6203706f MD |
2567 | debug.info->e.exp = scm_cons_source (debug.info->e.exp, |
2568 | SCM_CAR (x), | |
2569 | SCM_CDR (x)); | |
6dbd0af5 | 2570 | #endif |
0f2d19dd | 2571 | SCM_DEFER_INTS; |
a23afe53 MD |
2572 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2573 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2574 | SCM_ALLOW_INTS; |
6dbd0af5 | 2575 | goto loopnoap; |
0f2d19dd JB |
2576 | case 1: |
2577 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2578 | goto loopnoap; |
0f2d19dd JB |
2579 | case 0: |
2580 | RETURN (t.arg1); | |
2581 | } | |
2582 | } | |
2583 | } | |
2584 | else | |
2585 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2586 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2587 | #ifndef SCM_RECKLESS |
2588 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2589 | checkargs: |
2590 | #endif | |
2591 | if (SCM_CLOSUREP (proc)) | |
2592 | { | |
2593 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2594 | t.arg1 = SCM_CDR (x); | |
2595 | while (SCM_NIMP (arg2)) | |
2596 | { | |
2597 | if (SCM_NCONSP (arg2)) | |
2598 | goto evapply; | |
2599 | if (SCM_IMP (t.arg1)) | |
2600 | goto umwrongnumargs; | |
2601 | arg2 = SCM_CDR (arg2); | |
2602 | t.arg1 = SCM_CDR (t.arg1); | |
2603 | } | |
2604 | if (SCM_NNULLP (t.arg1)) | |
2605 | goto umwrongnumargs; | |
2606 | } | |
2607 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2608 | goto handle_a_macro; | |
2609 | #endif | |
2610 | } | |
2611 | ||
2612 | ||
6dbd0af5 MD |
2613 | evapply: |
2614 | PREP_APPLY (proc, SCM_EOL); | |
2615 | if (SCM_NULLP (SCM_CDR (x))) { | |
2616 | ENTER_APPLY; | |
89efbff4 | 2617 | evap0: |
0f2d19dd JB |
2618 | switch (SCM_TYP7 (proc)) |
2619 | { /* no arguments given */ | |
2620 | case scm_tc7_subr_0: | |
2621 | RETURN (SCM_SUBRF (proc) ()); | |
2622 | case scm_tc7_subr_1o: | |
2623 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2624 | case scm_tc7_lsubr: | |
2625 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2626 | case scm_tc7_rpsubr: | |
2627 | RETURN (SCM_BOOL_T); | |
2628 | case scm_tc7_asubr: | |
2629 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2630 | #ifdef CCLO |
0f2d19dd JB |
2631 | case scm_tc7_cclo: |
2632 | t.arg1 = proc; | |
2633 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2634 | #ifdef DEVAL |
2635 | debug.info->a.proc = proc; | |
2636 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2637 | #endif | |
0f2d19dd | 2638 | goto evap1; |
6dbd0af5 | 2639 | #endif |
89efbff4 MD |
2640 | case scm_tc7_pws: |
2641 | proc = SCM_PROCEDURE (proc); | |
2642 | #ifdef DEVAL | |
2643 | debug.info->a.proc = proc; | |
2644 | #endif | |
2645 | goto evap0; | |
0f2d19dd JB |
2646 | case scm_tcs_closures: |
2647 | x = SCM_CODE (proc); | |
e2806c10 | 2648 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2649 | goto cdrxbegin; |
da7f71d7 | 2650 | case scm_tcs_cons_gloc: |
195847fa MD |
2651 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2652 | { | |
2653 | x = SCM_ENTITY_PROCEDURE (proc); | |
2654 | arg2 = SCM_EOL; | |
2655 | goto type_dispatch; | |
2656 | } | |
2657 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2658 | goto badfun; |
2659 | else | |
da7f71d7 | 2660 | { |
195847fa MD |
2661 | t.arg1 = proc; |
2662 | proc = (SCM_I_ENTITYP (proc) | |
2663 | ? SCM_ENTITY_PROCEDURE (proc) | |
2664 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 | 2665 | #ifdef DEVAL |
195847fa MD |
2666 | debug.info->a.proc = proc; |
2667 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
da7f71d7 | 2668 | #endif |
195847fa MD |
2669 | if (SCM_NIMP (proc)) |
2670 | goto evap1; | |
2671 | else | |
2672 | goto badfun; | |
da7f71d7 | 2673 | } |
0f2d19dd JB |
2674 | case scm_tc7_contin: |
2675 | case scm_tc7_subr_1: | |
2676 | case scm_tc7_subr_2: | |
2677 | case scm_tc7_subr_2o: | |
2678 | case scm_tc7_cxr: | |
2679 | case scm_tc7_subr_3: | |
2680 | case scm_tc7_lsubr_2: | |
2681 | umwrongnumargs: | |
2682 | unmemocar (x, env); | |
2683 | wrongnumargs: | |
f5bf2977 GH |
2684 | /* scm_everr (x, env,...) */ |
2685 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2686 | default: |
2687 | /* handle macros here */ | |
2688 | goto badfun; | |
2689 | } | |
6dbd0af5 | 2690 | } |
0f2d19dd JB |
2691 | |
2692 | /* must handle macros by here */ | |
2693 | x = SCM_CDR (x); | |
cf7c17e9 | 2694 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2695 | if (SCM_IMP (x)) |
2696 | goto wrongnumargs; | |
680ed4a8 MD |
2697 | else if (SCM_CONSP (x)) |
2698 | { | |
2699 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2700 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2701 | else |
2702 | t.arg1 = EVALCELLCAR (x, env); | |
2703 | } | |
3201d763 | 2704 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2705 | { |
3201d763 DH |
2706 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2707 | if (vcell == 0) | |
680ed4a8 | 2708 | t.arg1 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2709 | else |
2710 | t.arg1 = SCM_PACK (vcell); | |
680ed4a8 MD |
2711 | } |
2712 | else | |
2713 | goto wrongnumargs; | |
2714 | #else | |
0f2d19dd | 2715 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2716 | #endif |
6dbd0af5 MD |
2717 | #ifdef DEVAL |
2718 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2719 | #endif | |
0f2d19dd JB |
2720 | x = SCM_CDR (x); |
2721 | if (SCM_NULLP (x)) | |
2722 | { | |
6dbd0af5 | 2723 | ENTER_APPLY; |
0f2d19dd JB |
2724 | evap1: |
2725 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2726 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2727 | case scm_tc7_subr_2o: |
2728 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2729 | case scm_tc7_subr_1: | |
2730 | case scm_tc7_subr_1o: | |
2731 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2732 | case scm_tc7_cxr: | |
0f2d19dd JB |
2733 | if (SCM_SUBRF (proc)) |
2734 | { | |
2735 | if (SCM_INUMP (t.arg1)) | |
2736 | { | |
f8de44c1 | 2737 | RETURN (scm_make_real (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)))); |
0f2d19dd JB |
2738 | } |
2739 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2740 | if (SCM_REALP (t.arg1)) | |
2741 | { | |
eb42e2f0 | 2742 | RETURN (scm_make_real (SCM_DSUBRF (proc) (SCM_REAL_VALUE (t.arg1)))); |
0f2d19dd JB |
2743 | } |
2744 | #ifdef SCM_BIGDIG | |
2745 | if (SCM_BIGP (t.arg1)) | |
2746 | { | |
f8de44c1 | 2747 | RETURN (scm_make_real (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)))); |
0f2d19dd JB |
2748 | } |
2749 | #endif | |
2750 | floerr: | |
9de33deb MD |
2751 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), t.arg1, |
2752 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd | 2753 | } |
3201d763 | 2754 | proc = SCM_SNAME (proc); |
0f2d19dd JB |
2755 | { |
2756 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2757 | while ('c' != *--chrs) | |
2758 | { | |
0c95b57d | 2759 | SCM_ASSERT (SCM_CONSP (t.arg1), |
0f2d19dd JB |
2760 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); |
2761 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2762 | } | |
2763 | RETURN (t.arg1); | |
2764 | } | |
2765 | case scm_tc7_rpsubr: | |
2766 | RETURN (SCM_BOOL_T); | |
2767 | case scm_tc7_asubr: | |
2768 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2769 | case scm_tc7_lsubr: | |
2770 | #ifdef DEVAL | |
6dbd0af5 | 2771 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2772 | #else |
2773 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2774 | #endif | |
6dbd0af5 | 2775 | #ifdef CCLO |
0f2d19dd JB |
2776 | case scm_tc7_cclo: |
2777 | arg2 = t.arg1; | |
2778 | t.arg1 = proc; | |
2779 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2780 | #ifdef DEVAL |
2781 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2782 | debug.info->a.proc = proc; | |
2783 | #endif | |
0f2d19dd | 2784 | goto evap2; |
6dbd0af5 | 2785 | #endif |
89efbff4 MD |
2786 | case scm_tc7_pws: |
2787 | proc = SCM_PROCEDURE (proc); | |
2788 | #ifdef DEVAL | |
2789 | debug.info->a.proc = proc; | |
2790 | #endif | |
2791 | goto evap1; | |
0f2d19dd | 2792 | case scm_tcs_closures: |
195847fa | 2793 | /* clos1: */ |
0f2d19dd JB |
2794 | x = SCM_CODE (proc); |
2795 | #ifdef DEVAL | |
e2806c10 | 2796 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2797 | #else |
e2806c10 | 2798 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2799 | #endif |
2800 | goto cdrxbegin; | |
65e41721 MD |
2801 | case scm_tc7_contin: |
2802 | scm_call_continuation (proc, t.arg1); | |
0c32d76c | 2803 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2804 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2805 | { | |
195847fa | 2806 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2807 | #ifdef DEVAL |
2808 | arg2 = debug.info->a.args; | |
2809 | #else | |
2810 | arg2 = scm_cons (t.arg1, SCM_EOL); | |
2811 | #endif | |
f3d2630a MD |
2812 | goto type_dispatch; |
2813 | } | |
2814 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2815 | goto badfun; |
2816 | else | |
0c32d76c | 2817 | { |
195847fa MD |
2818 | arg2 = t.arg1; |
2819 | t.arg1 = proc; | |
2820 | proc = (SCM_I_ENTITYP (proc) | |
2821 | ? SCM_ENTITY_PROCEDURE (proc) | |
2822 | : SCM_OPERATOR_PROCEDURE (proc)); | |
0c32d76c | 2823 | #ifdef DEVAL |
195847fa MD |
2824 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); |
2825 | debug.info->a.proc = proc; | |
0c32d76c | 2826 | #endif |
195847fa MD |
2827 | if (SCM_NIMP (proc)) |
2828 | goto evap2; | |
2829 | else | |
2830 | goto badfun; | |
0c32d76c | 2831 | } |
0f2d19dd JB |
2832 | case scm_tc7_subr_2: |
2833 | case scm_tc7_subr_0: | |
2834 | case scm_tc7_subr_3: | |
2835 | case scm_tc7_lsubr_2: | |
2836 | goto wrongnumargs; | |
2837 | default: | |
2838 | goto badfun; | |
2839 | } | |
2840 | } | |
cf7c17e9 | 2841 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2842 | if (SCM_IMP (x)) |
2843 | goto wrongnumargs; | |
680ed4a8 MD |
2844 | else if (SCM_CONSP (x)) |
2845 | { | |
2846 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2847 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2848 | else |
2849 | arg2 = EVALCELLCAR (x, env); | |
2850 | } | |
3201d763 | 2851 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2852 | { |
3201d763 DH |
2853 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2854 | if (vcell == 0) | |
680ed4a8 | 2855 | arg2 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2856 | else |
2857 | arg2 = SCM_PACK (vcell); | |
680ed4a8 MD |
2858 | } |
2859 | else | |
2860 | goto wrongnumargs; | |
2861 | #else | |
2862 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2863 | #endif |
2864 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2865 | #ifdef DEVAL |
2866 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2867 | #endif | |
0f2d19dd JB |
2868 | x = SCM_CDR (x); |
2869 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2870 | ENTER_APPLY; |
0f2d19dd JB |
2871 | #ifdef CCLO |
2872 | evap2: | |
2873 | #endif | |
6dbd0af5 MD |
2874 | switch (SCM_TYP7 (proc)) |
2875 | { /* have two arguments */ | |
2876 | case scm_tc7_subr_2: | |
2877 | case scm_tc7_subr_2o: | |
2878 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2879 | case scm_tc7_lsubr: | |
0f2d19dd | 2880 | #ifdef DEVAL |
6dbd0af5 MD |
2881 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2882 | #else | |
2883 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2884 | #endif |
6dbd0af5 MD |
2885 | case scm_tc7_lsubr_2: |
2886 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2887 | case scm_tc7_rpsubr: | |
2888 | case scm_tc7_asubr: | |
2889 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2890 | #ifdef CCLO | |
2891 | cclon: | |
2892 | case scm_tc7_cclo: | |
0f2d19dd | 2893 | #ifdef DEVAL |
195847fa MD |
2894 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2895 | scm_cons (proc, debug.info->a.args), | |
2896 | SCM_EOL)); | |
0f2d19dd | 2897 | #else |
195847fa MD |
2898 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2899 | scm_cons2 (proc, t.arg1, | |
2900 | scm_cons (arg2, | |
2901 | scm_eval_args (x, | |
2902 | env, | |
2903 | proc))), | |
2904 | SCM_EOL)); | |
0f2d19dd | 2905 | #endif |
6dbd0af5 MD |
2906 | /* case scm_tc7_cclo: |
2907 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2908 | arg2 = t.arg1; | |
2909 | t.arg1 = proc; | |
2910 | proc = SCM_CCLO_SUBR(proc); | |
2911 | goto evap3; */ | |
2912 | #endif | |
89efbff4 MD |
2913 | case scm_tc7_pws: |
2914 | proc = SCM_PROCEDURE (proc); | |
2915 | #ifdef DEVAL | |
2916 | debug.info->a.proc = proc; | |
2917 | #endif | |
2918 | goto evap2; | |
0c32d76c | 2919 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2920 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2921 | { | |
195847fa | 2922 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2923 | #ifdef DEVAL |
2924 | arg2 = debug.info->a.args; | |
2925 | #else | |
2926 | arg2 = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2927 | #endif | |
f3d2630a MD |
2928 | goto type_dispatch; |
2929 | } | |
2930 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2931 | goto badfun; |
2932 | else | |
0c32d76c | 2933 | { |
195847fa | 2934 | operatorn: |
0c32d76c | 2935 | #ifdef DEVAL |
195847fa MD |
2936 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) |
2937 | ? SCM_ENTITY_PROCEDURE (proc) | |
2938 | : SCM_OPERATOR_PROCEDURE (proc), | |
2939 | scm_cons (proc, debug.info->a.args), | |
2940 | SCM_EOL)); | |
2941 | #else | |
2942 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) | |
2943 | ? SCM_ENTITY_PROCEDURE (proc) | |
2944 | : SCM_OPERATOR_PROCEDURE (proc), | |
2945 | scm_cons2 (proc, t.arg1, | |
2946 | scm_cons (arg2, | |
2947 | scm_eval_args (x, | |
2948 | env, | |
2949 | proc))), | |
2950 | SCM_EOL)); | |
2951 | #endif | |
0c32d76c | 2952 | } |
6dbd0af5 MD |
2953 | case scm_tc7_subr_0: |
2954 | case scm_tc7_cxr: | |
2955 | case scm_tc7_subr_1o: | |
2956 | case scm_tc7_subr_1: | |
2957 | case scm_tc7_subr_3: | |
2958 | case scm_tc7_contin: | |
2959 | goto wrongnumargs; | |
2960 | default: | |
2961 | goto badfun; | |
2962 | case scm_tcs_closures: | |
195847fa | 2963 | /* clos2: */ |
0f2d19dd | 2964 | #ifdef DEVAL |
da7f71d7 MD |
2965 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2966 | debug.info->a.args, | |
2967 | SCM_ENV (proc)); | |
0f2d19dd | 2968 | #else |
da7f71d7 MD |
2969 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2970 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2971 | #endif |
6dbd0af5 MD |
2972 | x = SCM_CODE (proc); |
2973 | goto cdrxbegin; | |
2974 | } | |
0f2d19dd | 2975 | } |
cf7c17e9 | 2976 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2977 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2978 | goto wrongnumargs; | |
2979 | #endif | |
0f2d19dd | 2980 | #ifdef DEVAL |
6dbd0af5 | 2981 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2982 | scm_deval_args (x, env, proc, |
2983 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2984 | #endif |
6dbd0af5 | 2985 | ENTER_APPLY; |
89efbff4 | 2986 | evap3: |
6dbd0af5 MD |
2987 | switch (SCM_TYP7 (proc)) |
2988 | { /* have 3 or more arguments */ | |
0f2d19dd | 2989 | #ifdef DEVAL |
6dbd0af5 MD |
2990 | case scm_tc7_subr_3: |
2991 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2992 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2993 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 2994 | case scm_tc7_asubr: |
399dedcc MD |
2995 | #ifdef BUILTIN_RPASUBR |
2996 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2997 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2998 | do |
2999 | { | |
3000 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
3001 | arg2 = SCM_CDR (arg2); | |
3002 | } | |
3003 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
3004 | RETURN (t.arg1) |
3005 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3006 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3007 | #ifdef BUILTIN_RPASUBR |
3008 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3009 | RETURN (SCM_BOOL_F) | |
3010 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
3011 | do |
3012 | { | |
3013 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
3014 | RETURN (SCM_BOOL_F) | |
3015 | arg2 = SCM_CAR (t.arg1); | |
3016 | t.arg1 = SCM_CDR (t.arg1); | |
3017 | } | |
3018 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
3019 | RETURN (SCM_BOOL_T) |
3020 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
3021 | RETURN (SCM_APPLY (proc, t.arg1, |
3022 | scm_acons (arg2, | |
3023 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
3024 | SCM_EOL))) | |
71d3aa6d | 3025 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 3026 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
3027 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
3028 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
3029 | case scm_tc7_lsubr: |
3030 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 3031 | #ifdef CCLO |
6dbd0af5 MD |
3032 | case scm_tc7_cclo: |
3033 | goto cclon; | |
0f2d19dd | 3034 | #endif |
89efbff4 MD |
3035 | case scm_tc7_pws: |
3036 | proc = SCM_PROCEDURE (proc); | |
3037 | debug.info->a.proc = proc; | |
3038 | goto evap3; | |
6dbd0af5 | 3039 | case scm_tcs_closures: |
b7ff98dd | 3040 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 3041 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
3042 | debug.info->a.args, |
3043 | SCM_ENV (proc)); | |
3044 | x = SCM_CODE (proc); | |
3045 | goto cdrxbegin; | |
3046 | #else /* DEVAL */ | |
3047 | case scm_tc7_subr_3: | |
3048 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
3049 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
3050 | case scm_tc7_asubr: | |
399dedcc | 3051 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
3052 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
3053 | do | |
3054 | { | |
3055 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
3056 | x = SCM_CDR(x); | |
3057 | } | |
3058 | while (SCM_NIMP (x)); | |
399dedcc MD |
3059 | RETURN (t.arg1) |
3060 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3061 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3062 | #ifdef BUILTIN_RPASUBR |
3063 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3064 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
3065 | do |
3066 | { | |
3067 | t.arg1 = EVALCAR (x, env); | |
3068 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
3069 | RETURN (SCM_BOOL_F) | |
3070 | arg2 = t.arg1; | |
3071 | x = SCM_CDR (x); | |
3072 | } | |
3073 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
3074 | RETURN (SCM_BOOL_T) |
3075 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 3076 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
3077 | scm_acons (arg2, |
3078 | scm_eval_args (x, env, proc), | |
3079 | SCM_EOL))); | |
71d3aa6d | 3080 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 3081 | case scm_tc7_lsubr_2: |
680ed4a8 | 3082 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 3083 | case scm_tc7_lsubr: |
680ed4a8 MD |
3084 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
3085 | arg2, | |
3086 | scm_eval_args (x, env, proc)))); | |
0f2d19dd | 3087 | #ifdef CCLO |
6dbd0af5 MD |
3088 | case scm_tc7_cclo: |
3089 | goto cclon; | |
0f2d19dd | 3090 | #endif |
89efbff4 MD |
3091 | case scm_tc7_pws: |
3092 | proc = SCM_PROCEDURE (proc); | |
3093 | goto evap3; | |
6dbd0af5 MD |
3094 | case scm_tcs_closures: |
3095 | #ifdef DEVAL | |
b7ff98dd | 3096 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 3097 | #endif |
e2806c10 | 3098 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
3099 | scm_cons2 (t.arg1, |
3100 | arg2, | |
3101 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
3102 | SCM_ENV (proc)); |
3103 | x = SCM_CODE (proc); | |
3104 | goto cdrxbegin; | |
0f2d19dd | 3105 | #endif /* DEVAL */ |
0c32d76c | 3106 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3107 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3108 | { | |
3109 | #ifdef DEVAL | |
3110 | arg2 = debug.info->a.args; | |
3111 | #else | |
3112 | arg2 = scm_cons2 (t.arg1, arg2, scm_eval_args (x, env, proc)); | |
3113 | #endif | |
195847fa | 3114 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
3115 | goto type_dispatch; |
3116 | } | |
3117 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3118 | goto badfun; |
3119 | else | |
195847fa | 3120 | goto operatorn; |
6dbd0af5 MD |
3121 | case scm_tc7_subr_2: |
3122 | case scm_tc7_subr_1o: | |
3123 | case scm_tc7_subr_2o: | |
3124 | case scm_tc7_subr_0: | |
3125 | case scm_tc7_cxr: | |
3126 | case scm_tc7_subr_1: | |
3127 | case scm_tc7_contin: | |
3128 | goto wrongnumargs; | |
3129 | default: | |
3130 | goto badfun; | |
3131 | } | |
0f2d19dd JB |
3132 | } |
3133 | #ifdef DEVAL | |
6dbd0af5 | 3134 | exit: |
b6d75948 | 3135 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3136 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3137 | { |
b7ff98dd MD |
3138 | SCM_CLEAR_TRACED_FRAME (debug); |
3139 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3140 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3141 | else |
3142 | { | |
3143 | scm_make_cont (&t.arg1); | |
ca6ef71a | 3144 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
3145 | { |
3146 | proc = SCM_THROW_VALUE (t.arg1); | |
3147 | goto ret; | |
3148 | } | |
3149 | } | |
2f0d1375 | 3150 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3151 | } |
3152 | ret: | |
1646d37b | 3153 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3154 | return proc; |
3155 | #endif | |
3156 | } | |
3157 | ||
6dbd0af5 MD |
3158 | |
3159 | /* SECTION: This code is compiled once. | |
3160 | */ | |
3161 | ||
0f2d19dd JB |
3162 | #ifndef DEVAL |
3163 | ||
82a2622a | 3164 | /* This code processes the arguments to apply: |
b145c172 JB |
3165 | |
3166 | (apply PROC ARG1 ... ARGS) | |
3167 | ||
82a2622a JB |
3168 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
3169 | ... arguments onto the front of ARGS, and returns the resulting | |
3170 | list. Note that ARGS is a list; thus, the argument to this | |
3171 | function is a list whose last element is a list. | |
3172 | ||
3173 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
3174 | result. apply:nconc2last takes care of building the list of |
3175 | arguments, given (ARG1 ... ARGS). | |
3176 | ||
82a2622a JB |
3177 | Rather than do new consing, apply:nconc2last destroys its argument. |
3178 | On that topic, this code came into my care with the following | |
3179 | beautifully cryptic comment on that topic: "This will only screw | |
3180 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
3181 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 3182 | |
3b3b36dd | 3183 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
1bbd0b84 | 3184 | (SCM lst), |
b380b885 | 3185 | "") |
1bbd0b84 | 3186 | #define FUNC_NAME s_scm_nconc2last |
0f2d19dd JB |
3187 | { |
3188 | SCM *lloc; | |
c1bfcf60 | 3189 | SCM_VALIDATE_NONEMPTYLIST (1,lst); |
0f2d19dd JB |
3190 | lloc = &lst; |
3191 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 3192 | lloc = SCM_CDRLOC (*lloc); |
1bbd0b84 | 3193 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
3194 | *lloc = SCM_CAR (*lloc); |
3195 | return lst; | |
3196 | } | |
1bbd0b84 | 3197 | #undef FUNC_NAME |
0f2d19dd JB |
3198 | |
3199 | #endif /* !DEVAL */ | |
3200 | ||
6dbd0af5 MD |
3201 | |
3202 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
3203 | * It is compiled twice. | |
3204 | */ | |
3205 | ||
0f2d19dd | 3206 | #if 0 |
1cc91f1b | 3207 | |
0f2d19dd | 3208 | SCM |
6e8d25a6 | 3209 | scm_apply (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3210 | {} |
3211 | #endif | |
3212 | ||
3213 | #if 0 | |
1cc91f1b | 3214 | |
0f2d19dd | 3215 | SCM |
6e8d25a6 GB |
3216 | scm_dapply (SCM proc, SCM arg1, SCM args) |
3217 | { /* empty */ } | |
0f2d19dd JB |
3218 | #endif |
3219 | ||
1cc91f1b | 3220 | |
82a2622a JB |
3221 | /* Apply a function to a list of arguments. |
3222 | ||
3223 | This function is exported to the Scheme level as taking two | |
3224 | required arguments and a tail argument, as if it were: | |
3225 | (lambda (proc arg1 . args) ...) | |
3226 | Thus, if you just have a list of arguments to pass to a procedure, | |
3227 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
3228 | args, pass the first as ARG1, then cons any remaining fixed args | |
3229 | onto the front of your argument list, and pass that as ARGS. */ | |
3230 | ||
0f2d19dd | 3231 | SCM |
1bbd0b84 | 3232 | SCM_APPLY (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3233 | { |
3234 | #ifdef DEBUG_EXTENSIONS | |
3235 | #ifdef DEVAL | |
6dbd0af5 | 3236 | scm_debug_frame debug; |
c0ab1b8d | 3237 | scm_debug_info debug_vect_body; |
1646d37b | 3238 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 3239 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 3240 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
3241 | debug.vect[0].a.proc = proc; |
3242 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 3243 | scm_last_debug_frame = &debug; |
0f2d19dd | 3244 | #else |
b7ff98dd | 3245 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
3246 | return scm_dapply (proc, arg1, args); |
3247 | #endif | |
3248 | #endif | |
3249 | ||
3250 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
3251 | |
3252 | /* If ARGS is the empty list, then we're calling apply with only two | |
3253 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
3254 | the case, futz with things so that ARG1 is the first argument to | |
3255 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
3256 | rest. |
3257 | ||
3258 | Setting the debug apply frame args this way is pretty messy. | |
3259 | Perhaps we should store arg1 and args directly in the frame as | |
3260 | received, and let scm_frame_arguments unpack them, because that's | |
3261 | a relatively rare operation. This works for now; if the Guile | |
3262 | developer archives are still around, see Mikael's post of | |
3263 | 11-Apr-97. */ | |
0f2d19dd JB |
3264 | if (SCM_NULLP (args)) |
3265 | { | |
3266 | if (SCM_NULLP (arg1)) | |
30000774 JB |
3267 | { |
3268 | arg1 = SCM_UNDEFINED; | |
3269 | #ifdef DEVAL | |
3270 | debug.vect[0].a.args = SCM_EOL; | |
3271 | #endif | |
3272 | } | |
0f2d19dd JB |
3273 | else |
3274 | { | |
30000774 JB |
3275 | #ifdef DEVAL |
3276 | debug.vect[0].a.args = arg1; | |
3277 | #endif | |
0f2d19dd JB |
3278 | args = SCM_CDR (arg1); |
3279 | arg1 = SCM_CAR (arg1); | |
3280 | } | |
3281 | } | |
3282 | else | |
3283 | { | |
0c95b57d | 3284 | /* SCM_ASRTGO(SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 3285 | args = scm_nconc2last (args); |
30000774 JB |
3286 | #ifdef DEVAL |
3287 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3288 | #endif | |
0f2d19dd | 3289 | } |
0f2d19dd | 3290 | #ifdef DEVAL |
b6d75948 | 3291 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
3292 | { |
3293 | SCM tmp; | |
b7ff98dd | 3294 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 3295 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3296 | else |
3297 | { | |
3298 | scm_make_cont (&tmp); | |
ca6ef71a | 3299 | if (setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
3300 | goto entap; |
3301 | } | |
2f0d1375 | 3302 | scm_ithrow (scm_sym_enter_frame, scm_cons (tmp, SCM_EOL), 0); |
6dbd0af5 MD |
3303 | } |
3304 | entap: | |
3305 | ENTER_APPLY; | |
3306 | #endif | |
3307 | #ifdef CCLO | |
3308 | tail: | |
0f2d19dd JB |
3309 | #endif |
3310 | switch (SCM_TYP7 (proc)) | |
3311 | { | |
3312 | case scm_tc7_subr_2o: | |
3313 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
3314 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3315 | case scm_tc7_subr_2: | |
269861c7 MD |
3316 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
3317 | wrongnumargs); | |
0f2d19dd JB |
3318 | args = SCM_CAR (args); |
3319 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3320 | case scm_tc7_subr_0: | |
3321 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
3322 | RETURN (SCM_SUBRF (proc) ()) | |
3323 | case scm_tc7_subr_1: | |
3324 | case scm_tc7_subr_1o: | |
3325 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3326 | RETURN (SCM_SUBRF (proc) (arg1)) | |
3327 | case scm_tc7_cxr: | |
3328 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
0f2d19dd JB |
3329 | if (SCM_SUBRF (proc)) |
3330 | { | |
6dbd0af5 MD |
3331 | if (SCM_INUMP (arg1)) |
3332 | { | |
f8de44c1 | 3333 | RETURN (scm_make_real (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)))); |
6dbd0af5 | 3334 | } |
0f2d19dd | 3335 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
3336 | if (SCM_REALP (arg1)) |
3337 | { | |
eb42e2f0 | 3338 | RETURN (scm_make_real (SCM_DSUBRF (proc) (SCM_REAL_VALUE (arg1)))); |
6dbd0af5 | 3339 | } |
0f2d19dd | 3340 | #ifdef SCM_BIGDIG |
26d5b9b4 | 3341 | if (SCM_BIGP (arg1)) |
f8de44c1 | 3342 | RETURN (scm_make_real (SCM_DSUBRF (proc) (scm_big2dbl (arg1)))) |
0f2d19dd JB |
3343 | #endif |
3344 | floerr: | |
9de33deb MD |
3345 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), arg1, |
3346 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd | 3347 | } |
3201d763 | 3348 | proc = SCM_SNAME (proc); |
0f2d19dd JB |
3349 | { |
3350 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
3351 | while ('c' != *--chrs) | |
3352 | { | |
0c95b57d | 3353 | SCM_ASSERT (SCM_CONSP (arg1), |
0f2d19dd JB |
3354 | arg1, SCM_ARG1, SCM_CHARS (proc)); |
3355 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
3356 | } | |
3357 | RETURN (arg1) | |
3358 | } | |
3359 | case scm_tc7_subr_3: | |
3360 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
3361 | case scm_tc7_lsubr: | |
3362 | #ifdef DEVAL | |
6dbd0af5 | 3363 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
3364 | #else |
3365 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
3366 | #endif | |
3367 | case scm_tc7_lsubr_2: | |
0c95b57d | 3368 | SCM_ASRTGO (SCM_CONSP (args), wrongnumargs); |
0f2d19dd JB |
3369 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) |
3370 | case scm_tc7_asubr: | |
3371 | if (SCM_NULLP (args)) | |
3372 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
3373 | while (SCM_NIMP (args)) | |
3374 | { | |
3375 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3376 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
3377 | args = SCM_CDR (args); | |
3378 | } | |
3379 | RETURN (arg1); | |
3380 | case scm_tc7_rpsubr: | |
3381 | if (SCM_NULLP (args)) | |
3382 | RETURN (SCM_BOOL_T); | |
3383 | while (SCM_NIMP (args)) | |
3384 | { | |
3385 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3386 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
3387 | RETURN (SCM_BOOL_F); | |
3388 | arg1 = SCM_CAR (args); | |
3389 | args = SCM_CDR (args); | |
3390 | } | |
3391 | RETURN (SCM_BOOL_T); | |
3392 | case scm_tcs_closures: | |
3393 | #ifdef DEVAL | |
6dbd0af5 | 3394 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
3395 | #else |
3396 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3397 | #endif | |
cf7c17e9 | 3398 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3399 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3400 | goto wrongnumargs; | |
3401 | #endif | |
1609038c MD |
3402 | |
3403 | /* Copy argument list */ | |
3404 | if (SCM_IMP (arg1)) | |
3405 | args = arg1; | |
3406 | else | |
3407 | { | |
3408 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
cabe682c | 3409 | while (arg1 = SCM_CDR (arg1), SCM_CONSP (arg1)) |
1609038c MD |
3410 | { |
3411 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3412 | SCM_UNSPECIFIED)); | |
3413 | tl = SCM_CDR (tl); | |
3414 | } | |
3415 | SCM_SETCDR (tl, arg1); | |
3416 | } | |
3417 | ||
3418 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
2ddb0920 | 3419 | proc = SCM_CDR (SCM_CODE (proc)); |
e791c18f MD |
3420 | again: |
3421 | arg1 = proc; | |
3422 | while (SCM_NNULLP (arg1 = SCM_CDR (arg1))) | |
2ddb0920 MD |
3423 | { |
3424 | if (SCM_IMP (SCM_CAR (proc))) | |
3425 | { | |
3426 | if (SCM_ISYMP (SCM_CAR (proc))) | |
3427 | { | |
3428 | proc = scm_m_expand_body (proc, args); | |
e791c18f | 3429 | goto again; |
2ddb0920 | 3430 | } |
2ddb0920 MD |
3431 | } |
3432 | else | |
e791c18f MD |
3433 | SCM_CEVAL (SCM_CAR (proc), args); |
3434 | proc = arg1; | |
2ddb0920 | 3435 | } |
e791c18f | 3436 | RETURN (EVALCAR (proc, args)); |
0f2d19dd JB |
3437 | case scm_tc7_contin: |
3438 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3439 | scm_call_continuation (proc, arg1); | |
3440 | #ifdef CCLO | |
3441 | case scm_tc7_cclo: | |
3442 | #ifdef DEVAL | |
6dbd0af5 MD |
3443 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3444 | arg1 = proc; | |
3445 | proc = SCM_CCLO_SUBR (proc); | |
3446 | debug.vect[0].a.proc = proc; | |
3447 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3448 | #else |
3449 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3450 | arg1 = proc; |
3451 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3452 | #endif |
0f2d19dd JB |
3453 | goto tail; |
3454 | #endif | |
89efbff4 MD |
3455 | case scm_tc7_pws: |
3456 | proc = SCM_PROCEDURE (proc); | |
3457 | #ifdef DEVAL | |
3458 | debug.vect[0].a.proc = proc; | |
3459 | #endif | |
3460 | goto tail; | |
0c32d76c | 3461 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3462 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3463 | { | |
3464 | #ifdef DEVAL | |
3465 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3466 | #else | |
3467 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3468 | #endif | |
195847fa | 3469 | RETURN (scm_apply_generic (proc, args)); |
f3d2630a MD |
3470 | } |
3471 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3472 | goto badproc; |
3473 | else | |
da7f71d7 MD |
3474 | { |
3475 | #ifdef DEVAL | |
3476 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3477 | #else | |
3478 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3479 | #endif | |
3480 | arg1 = proc; | |
195847fa MD |
3481 | proc = (SCM_I_ENTITYP (proc) |
3482 | ? SCM_ENTITY_PROCEDURE (proc) | |
3483 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 MD |
3484 | #ifdef DEVAL |
3485 | debug.vect[0].a.proc = proc; | |
3486 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3487 | #endif | |
195847fa MD |
3488 | if (SCM_NIMP (proc)) |
3489 | goto tail; | |
3490 | else | |
3491 | goto badproc; | |
da7f71d7 | 3492 | } |
0f2d19dd | 3493 | wrongnumargs: |
f5bf2977 | 3494 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3495 | default: |
3496 | badproc: | |
3497 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3498 | RETURN (arg1); | |
3499 | } | |
3500 | #ifdef DEVAL | |
6dbd0af5 | 3501 | exit: |
b6d75948 | 3502 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3503 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3504 | { |
b7ff98dd MD |
3505 | SCM_CLEAR_TRACED_FRAME (debug); |
3506 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3507 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3508 | else |
3509 | { | |
3510 | scm_make_cont (&arg1); | |
ca6ef71a | 3511 | if (setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
3512 | { |
3513 | proc = SCM_THROW_VALUE (arg1); | |
3514 | goto ret; | |
3515 | } | |
3516 | } | |
2f0d1375 | 3517 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3518 | } |
3519 | ret: | |
1646d37b | 3520 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3521 | return proc; |
3522 | #endif | |
3523 | } | |
3524 | ||
6dbd0af5 MD |
3525 | |
3526 | /* SECTION: The rest of this file is only read once. | |
3527 | */ | |
3528 | ||
0f2d19dd JB |
3529 | #ifndef DEVAL |
3530 | ||
d9c393f5 JB |
3531 | /* Typechecking for multi-argument MAP and FOR-EACH. |
3532 | ||
47c3f06d | 3533 | Verify that each element of the vector ARGV, except for the first, |
d9c393f5 | 3534 | is a proper list whose length is LEN. Attribute errors to WHO, |
47c3f06d | 3535 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ |
d9c393f5 | 3536 | static inline void |
47c3f06d MD |
3537 | check_map_args (SCM argv, |
3538 | long len, | |
3539 | SCM gf, | |
3540 | SCM proc, | |
3541 | SCM args, | |
3542 | const char *who) | |
d9c393f5 | 3543 | { |
47c3f06d | 3544 | SCM *ve = SCM_VELTS (argv); |
d9c393f5 JB |
3545 | int i; |
3546 | ||
47c3f06d | 3547 | for (i = SCM_LENGTH (argv) - 1; i >= 1; i--) |
d9c393f5 JB |
3548 | { |
3549 | int elt_len = scm_ilength (ve[i]); | |
3550 | ||
3551 | if (elt_len < 0) | |
47c3f06d MD |
3552 | { |
3553 | if (gf) | |
3554 | scm_apply_generic (gf, scm_cons (proc, args)); | |
3555 | else | |
3556 | scm_wrong_type_arg (who, i + 2, ve[i]); | |
3557 | } | |
d9c393f5 JB |
3558 | |
3559 | if (elt_len != len) | |
3560 | scm_out_of_range (who, ve[i]); | |
3561 | } | |
3562 | ||
47c3f06d | 3563 | scm_remember (&argv); |
d9c393f5 JB |
3564 | } |
3565 | ||
3566 | ||
47c3f06d | 3567 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
1cc91f1b | 3568 | |
368bf056 MD |
3569 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3570 | sequentially, starting with the first element(s). This is used in | |
3571 | evalext.c where the Scheme procedure `serial-map', which guarantees | |
3572 | sequential behaviour, is implemented using scm_map. If the | |
3573 | behaviour changes, we need to update `serial-map'. | |
3574 | */ | |
3575 | ||
0f2d19dd | 3576 | SCM |
1bbd0b84 | 3577 | scm_map (SCM proc, SCM arg1, SCM args) |
af45e3b0 | 3578 | #define FUNC_NAME s_map |
0f2d19dd | 3579 | { |
d9c393f5 | 3580 | long i, len; |
0f2d19dd JB |
3581 | SCM res = SCM_EOL; |
3582 | SCM *pres = &res; | |
3583 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3584 | ||
d9c393f5 | 3585 | len = scm_ilength (arg1); |
47c3f06d MD |
3586 | SCM_GASSERTn (len >= 0, |
3587 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
af45e3b0 | 3588 | SCM_VALIDATE_REST_ARGUMENT (args); |
0f2d19dd JB |
3589 | if (SCM_NULLP (args)) |
3590 | { | |
3591 | while (SCM_NIMP (arg1)) | |
3592 | { | |
47c3f06d MD |
3593 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), |
3594 | SCM_EOL); | |
a23afe53 | 3595 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3596 | arg1 = SCM_CDR (arg1); |
3597 | } | |
3598 | return res; | |
3599 | } | |
47c3f06d | 3600 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3601 | ve = SCM_VELTS (args); |
cf7c17e9 | 3602 | #ifndef SCM_RECKLESS |
47c3f06d | 3603 | check_map_args (args, len, g_map, proc, arg1, s_map); |
0f2d19dd JB |
3604 | #endif |
3605 | while (1) | |
3606 | { | |
3607 | arg1 = SCM_EOL; | |
3608 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3609 | { | |
d9c393f5 JB |
3610 | if (SCM_IMP (ve[i])) |
3611 | return res; | |
0f2d19dd JB |
3612 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); |
3613 | ve[i] = SCM_CDR (ve[i]); | |
3614 | } | |
3615 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3616 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3617 | } |
3618 | } | |
af45e3b0 | 3619 | #undef FUNC_NAME |
0f2d19dd JB |
3620 | |
3621 | ||
47c3f06d | 3622 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
1cc91f1b | 3623 | |
0f2d19dd | 3624 | SCM |
1bbd0b84 | 3625 | scm_for_each (SCM proc, SCM arg1, SCM args) |
af45e3b0 | 3626 | #define FUNC_NAME s_for_each |
0f2d19dd JB |
3627 | { |
3628 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
d9c393f5 | 3629 | long i, len; |
d9c393f5 | 3630 | len = scm_ilength (arg1); |
47c3f06d MD |
3631 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), |
3632 | SCM_ARG2, s_for_each); | |
af45e3b0 | 3633 | SCM_VALIDATE_REST_ARGUMENT (args); |
0f2d19dd JB |
3634 | if SCM_NULLP (args) |
3635 | { | |
3636 | while SCM_NIMP (arg1) | |
3637 | { | |
0f2d19dd JB |
3638 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); |
3639 | arg1 = SCM_CDR (arg1); | |
3640 | } | |
3641 | return SCM_UNSPECIFIED; | |
3642 | } | |
47c3f06d | 3643 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3644 | ve = SCM_VELTS (args); |
cf7c17e9 | 3645 | #ifndef SCM_RECKLESS |
47c3f06d | 3646 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); |
0f2d19dd JB |
3647 | #endif |
3648 | while (1) | |
3649 | { | |
3650 | arg1 = SCM_EOL; | |
3651 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3652 | { | |
3653 | if SCM_IMP | |
3654 | (ve[i]) return SCM_UNSPECIFIED; | |
3655 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3656 | ve[i] = SCM_CDR (ve[i]); | |
3657 | } | |
3658 | scm_apply (proc, arg1, SCM_EOL); | |
3659 | } | |
3660 | } | |
af45e3b0 | 3661 | #undef FUNC_NAME |
0f2d19dd | 3662 | |
1cc91f1b | 3663 | |
0f2d19dd | 3664 | SCM |
6e8d25a6 | 3665 | scm_closure (SCM code, SCM env) |
0f2d19dd JB |
3666 | { |
3667 | register SCM z; | |
3668 | SCM_NEWCELL (z); | |
3669 | SCM_SETCODE (z, code); | |
a23afe53 | 3670 | SCM_SETENV (z, env); |
0f2d19dd JB |
3671 | return z; |
3672 | } | |
3673 | ||
3674 | ||
3675 | long scm_tc16_promise; | |
1cc91f1b | 3676 | |
0f2d19dd | 3677 | SCM |
6e8d25a6 | 3678 | scm_makprom (SCM code) |
0f2d19dd | 3679 | { |
cf498326 | 3680 | SCM_RETURN_NEWSMOB (scm_tc16_promise, SCM_UNPACK (code)); |
0f2d19dd JB |
3681 | } |
3682 | ||
3683 | ||
1cc91f1b | 3684 | |
0f2d19dd | 3685 | static int |
1bbd0b84 | 3686 | prinprom (SCM exp,SCM port,scm_print_state *pstate) |
0f2d19dd | 3687 | { |
19402679 | 3688 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3689 | scm_puts ("#<promise ", port); |
19402679 MD |
3690 | SCM_SET_WRITINGP (pstate, 1); |
3691 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3692 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3693 | scm_putc ('>', port); |
0f2d19dd JB |
3694 | return !0; |
3695 | } | |
3696 | ||
3697 | ||
3b3b36dd | 3698 | SCM_DEFINE (scm_force, "force", 1, 0, 0, |
1bbd0b84 | 3699 | (SCM x), |
b380b885 | 3700 | "") |
1bbd0b84 | 3701 | #define FUNC_NAME s_scm_force |
0f2d19dd | 3702 | { |
3b3b36dd | 3703 | SCM_VALIDATE_SMOB (1,x,promise); |
f1267706 | 3704 | if (!((1L << 16) & SCM_UNPACK_CAR (x))) |
0f2d19dd JB |
3705 | { |
3706 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
f1267706 | 3707 | if (!((1L << 16) & SCM_UNPACK_CAR (x))) |
0f2d19dd JB |
3708 | { |
3709 | SCM_DEFER_INTS; | |
a23afe53 MD |
3710 | SCM_SETCDR (x, ans); |
3711 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3712 | SCM_ALLOW_INTS; |
3713 | } | |
3714 | } | |
3715 | return SCM_CDR (x); | |
3716 | } | |
1bbd0b84 | 3717 | #undef FUNC_NAME |
0f2d19dd | 3718 | |
a1ec6916 | 3719 | SCM_DEFINE (scm_promise_p, "promise?", 1, 0, 0, |
1bbd0b84 | 3720 | (SCM x), |
b380b885 MD |
3721 | "Return true if @var{obj} is a promise, i.e. a delayed computation\n" |
3722 | "(@pxref{Delayed evaluation,,,r4rs.info,The Revised^4 Report on Scheme}).") | |
1bbd0b84 | 3723 | #define FUNC_NAME s_scm_promise_p |
0f2d19dd | 3724 | { |
1bbd0b84 | 3725 | return SCM_BOOL(SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)); |
0f2d19dd | 3726 | } |
1bbd0b84 | 3727 | #undef FUNC_NAME |
0f2d19dd | 3728 | |
a1ec6916 | 3729 | SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0, |
1bbd0b84 | 3730 | (SCM xorig, SCM x, SCM y), |
b380b885 | 3731 | "") |
1bbd0b84 | 3732 | #define FUNC_NAME s_scm_cons_source |
26d5b9b4 MD |
3733 | { |
3734 | SCM p, z; | |
3735 | SCM_NEWCELL (z); | |
3736 | SCM_SETCAR (z, x); | |
3737 | SCM_SETCDR (z, y); | |
3738 | /* Copy source properties possibly associated with xorig. */ | |
3739 | p = scm_whash_lookup (scm_source_whash, xorig); | |
3740 | if (SCM_NIMP (p)) | |
3741 | scm_whash_insert (scm_source_whash, z, p); | |
3742 | return z; | |
3743 | } | |
1bbd0b84 | 3744 | #undef FUNC_NAME |
26d5b9b4 | 3745 | |
a1ec6916 | 3746 | SCM_DEFINE (scm_copy_tree, "copy-tree", 1, 0, 0, |
1bbd0b84 | 3747 | (SCM obj), |
b380b885 MD |
3748 | "Recursively copy the data tree that is bound to @var{obj}, and return a\n" |
3749 | "pointer to the new data structure. @code{copy-tree} recurses down the\n" | |
3750 | "contents of both pairs and vectors (since both cons cells and vector\n" | |
3751 | "cells may point to arbitrary objects), and stops recursing when it hits\n" | |
3752 | "any other object.") | |
1bbd0b84 | 3753 | #define FUNC_NAME s_scm_copy_tree |
0f2d19dd JB |
3754 | { |
3755 | SCM ans, tl; | |
26d5b9b4 | 3756 | if (SCM_IMP (obj)) |
ff467021 | 3757 | return obj; |
3910272e MD |
3758 | if (SCM_VECTORP (obj)) |
3759 | { | |
3760 | scm_sizet i = SCM_LENGTH (obj); | |
3761 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); | |
3762 | while (i--) | |
3763 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3764 | return ans; | |
3765 | } | |
ff467021 | 3766 | if (SCM_NCONSP (obj)) |
0f2d19dd JB |
3767 | return obj; |
3768 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
26d5b9b4 MD |
3769 | ans = tl = scm_cons_source (obj, |
3770 | scm_copy_tree (SCM_CAR (obj)), | |
3771 | SCM_UNSPECIFIED); | |
cabe682c | 3772 | while (obj = SCM_CDR (obj), SCM_CONSP (obj)) |
a23afe53 MD |
3773 | { |
3774 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3775 | SCM_UNSPECIFIED)); | |
3776 | tl = SCM_CDR (tl); | |
3777 | } | |
3778 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3779 | return ans; |
3780 | } | |
1bbd0b84 | 3781 | #undef FUNC_NAME |
0f2d19dd | 3782 | |
1cc91f1b | 3783 | |
0f2d19dd | 3784 | SCM |
1bbd0b84 | 3785 | scm_eval_3 (SCM obj, int copyp, SCM env) |
0f2d19dd JB |
3786 | { |
3787 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3788 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3789 | else if (copyp) | |
3790 | obj = scm_copy_tree (obj); | |
6cb702da | 3791 | return SCM_XEVAL (obj, env); |
0f2d19dd JB |
3792 | } |
3793 | ||
3b3b36dd | 3794 | SCM_DEFINE (scm_eval2, "eval2", 2, 0, 0, |
1bbd0b84 | 3795 | (SCM obj, SCM env_thunk), |
b380b885 MD |
3796 | "Evaluate @var{exp}, a Scheme expression, in the environment designated\n" |
3797 | "by @var{lookup}, a symbol-lookup function. @code{(eval exp)} is\n" | |
3798 | "equivalent to @code{(eval2 exp *top-level-lookup-closure*)}.") | |
1bbd0b84 | 3799 | #define FUNC_NAME s_scm_eval2 |
0f2d19dd | 3800 | { |
6bcb0868 | 3801 | return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk)); |
0f2d19dd | 3802 | } |
1bbd0b84 | 3803 | #undef FUNC_NAME |
0f2d19dd | 3804 | |
3b3b36dd | 3805 | SCM_DEFINE (scm_eval, "eval", 1, 0, 0, |
1bbd0b84 | 3806 | (SCM obj), |
b380b885 MD |
3807 | "Evaluate @var{exp}, a list representing a Scheme expression, in the\n" |
3808 | "top-level environment.") | |
1bbd0b84 | 3809 | #define FUNC_NAME s_scm_eval |
0f2d19dd | 3810 | { |
6bcb0868 MD |
3811 | return scm_eval_3 (obj, |
3812 | 1, | |
3813 | scm_top_level_env | |
3814 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd | 3815 | } |
1bbd0b84 | 3816 | #undef FUNC_NAME |
0f2d19dd | 3817 | |
1bbd0b84 GB |
3818 | /* |
3819 | SCM_REGISTER_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); | |
3820 | */ | |
1cc91f1b | 3821 | |
0f2d19dd | 3822 | SCM |
1bbd0b84 | 3823 | scm_eval_x (SCM obj) |
0f2d19dd | 3824 | { |
6bcb0868 MD |
3825 | return scm_eval_3 (obj, |
3826 | 0, | |
3827 | scm_top_level_env | |
3828 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3829 | } |
3830 | ||
6dbd0af5 MD |
3831 | |
3832 | /* At this point, scm_deval and scm_dapply are generated. | |
3833 | */ | |
3834 | ||
0f2d19dd | 3835 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3836 | # define DEVAL |
3837 | # include "eval.c" | |
0f2d19dd JB |
3838 | #endif |
3839 | ||
3840 | ||
1cc91f1b | 3841 | |
0f2d19dd JB |
3842 | void |
3843 | scm_init_eval () | |
0f2d19dd | 3844 | { |
33b97402 MD |
3845 | scm_init_opts (scm_evaluator_traps, |
3846 | scm_evaluator_trap_table, | |
3847 | SCM_N_EVALUATOR_TRAPS); | |
3848 | scm_init_opts (scm_eval_options_interface, | |
3849 | scm_eval_opts, | |
3850 | SCM_N_EVAL_OPTIONS); | |
3851 | ||
f99c9c28 MD |
3852 | scm_tc16_promise = scm_make_smob_type ("promise", 0); |
3853 | scm_set_smob_mark (scm_tc16_promise, scm_markcdr); | |
3854 | scm_set_smob_print (scm_tc16_promise, prinprom); | |
b8229a3b | 3855 | |
81123e6d | 3856 | scm_f_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
0f2d19dd | 3857 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); |
2f0d1375 MD |
3858 | scm_sym_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); |
3859 | scm_sym_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3860 | scm_sym_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3861 | scm_sym_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3862 | scm_sym_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
0f2d19dd | 3863 | |
43a912cf MD |
3864 | scm_lisp_nil = scm_sysintern ("nil", SCM_UNDEFINED); |
3865 | SCM_SETCDR (scm_lisp_nil, SCM_CAR (scm_lisp_nil)); | |
3866 | scm_lisp_nil = SCM_CAR (scm_lisp_nil); | |
3867 | scm_lisp_t = scm_sysintern ("t", SCM_UNDEFINED); | |
3868 | SCM_SETCDR (scm_lisp_t, SCM_CAR (scm_lisp_t)); | |
3869 | scm_lisp_t = SCM_CAR (scm_lisp_t); | |
73b64342 | 3870 | |
0f2d19dd | 3871 | /* acros */ |
0f2d19dd JB |
3872 | /* end of acros */ |
3873 | ||
dc19d1d2 JB |
3874 | scm_top_level_lookup_closure_var = |
3875 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3876 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3877 | |
6dbd0af5 | 3878 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
3879 | scm_sym_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); |
3880 | scm_sym_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3881 | scm_sym_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3882 | scm_sym_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
6dbd0af5 MD |
3883 | #endif |
3884 | ||
a0599745 | 3885 | #include "libguile/eval.x" |
25eaf21a MD |
3886 | |
3887 | scm_add_feature ("delay"); | |
0f2d19dd | 3888 | } |
0f2d19dd | 3889 | |
6dbd0af5 | 3890 | #endif /* !DEVAL */ |
89e00824 ML |
3891 | |
3892 | /* | |
3893 | Local Variables: | |
3894 | c-file-style: "gnu" | |
3895 | End: | |
3896 | */ |