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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" | |
549e6ec6 | 102 | #include "libguile/fluids.h" |
a0599745 MD |
103 | |
104 | #include "libguile/validate.h" | |
105 | #include "libguile/eval.h" | |
89efbff4 | 106 | |
0f2d19dd JB |
107 | \f |
108 | ||
6dbd0af5 MD |
109 | /* The evaluator contains a plethora of EVAL symbols. |
110 | * This is an attempt at explanation. | |
111 | * | |
112 | * The following macros should be used in code which is read twice | |
113 | * (where the choice of evaluator is hard soldered): | |
114 | * | |
115 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
116 | * Originally, it is defined to scm_ceval, but is redefined to | |
117 | * scm_deval during the second pass. | |
118 | * | |
119 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
120 | * only side effects of expressions matter. All immediates are | |
121 | * ignored. | |
122 | * | |
6cb702da | 123 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
124 | * immediate. (This macro never calls an evaluator.) |
125 | * | |
126 | * EVALCAR evaluates the car of an expression. | |
127 | * | |
128 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
129 | * car is a lisp cell. | |
130 | * | |
131 | * The following macros should be used in code which is read once | |
132 | * (where the choice of evaluator is dynamic): | |
133 | * | |
6cb702da | 134 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
135 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
136 | * mode. | |
137 | * | |
6cb702da | 138 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
139 | * depending on the debugging mode. |
140 | * | |
141 | * The main motivation for keeping this plethora is efficiency | |
142 | * together with maintainability (=> locality of code). | |
143 | */ | |
144 | ||
6cb702da | 145 | #define SCM_CEVAL scm_ceval |
7d2b68a8 | 146 | #define SIDEVAL(x, env) if (SCM_NIMP (x)) SCM_CEVAL((x), (env)) |
6cb702da | 147 | |
7d2b68a8 MD |
148 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR (x)) \ |
149 | ? *scm_lookupcar (x, env, 1) \ | |
150 | : SCM_CEVAL (SCM_CAR (x), env)) | |
0f2d19dd | 151 | |
7d2b68a8 MD |
152 | #define EVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \ |
153 | ? (SCM_IMP (SCM_CAR (x)) \ | |
154 | ? SCM_EVALIM (SCM_CAR (x), env) \ | |
155 | : SCM_GLOC_VAL (SCM_CAR (x))) \ | |
156 | : EVALCELLCAR (x, env)) | |
0f2d19dd | 157 | |
e2806c10 | 158 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
159 | |
160 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 161 | |
0f2d19dd | 162 | SCM * |
6e8d25a6 | 163 | scm_ilookup (SCM iloc, SCM env) |
0f2d19dd JB |
164 | { |
165 | register int ir = SCM_IFRAME (iloc); | |
166 | register SCM er = env; | |
167 | for (; 0 != ir; --ir) | |
168 | er = SCM_CDR (er); | |
169 | er = SCM_CAR (er); | |
170 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
171 | er = SCM_CDR (er); | |
172 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
173 | return SCM_CDRLOC (er); |
174 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
175 | } |
176 | #endif | |
177 | ||
f8769b1d MV |
178 | #ifdef USE_THREADS |
179 | ||
180 | /* The Lookup Car Race | |
181 | - by Eva Luator | |
182 | ||
183 | Memoization of variables and special forms is done while executing | |
184 | the code for the first time. As long as there is only one thread | |
185 | everything is fine, but as soon as two threads execute the same | |
186 | code concurrently `for the first time' they can come into conflict. | |
187 | ||
188 | This memoization includes rewriting variable references into more | |
189 | efficient forms and expanding macros. Furthermore, macro expansion | |
190 | includes `compiling' special forms like `let', `cond', etc. into | |
191 | tree-code instructions. | |
192 | ||
193 | There shouldn't normally be a problem with memoizing local and | |
194 | global variable references (into ilocs and glocs), because all | |
195 | threads will mutate the code in *exactly* the same way and (if I | |
196 | read the C code correctly) it is not possible to observe a half-way | |
197 | mutated cons cell. The lookup procedure can handle this | |
198 | transparently without any critical sections. | |
199 | ||
200 | It is different with macro expansion, because macro expansion | |
201 | happens outside of the lookup procedure and can't be | |
202 | undone. Therefore it can't cope with it. It has to indicate | |
203 | failure when it detects a lost race and hope that the caller can | |
204 | handle it. Luckily, it turns out that this is the case. | |
205 | ||
206 | An example to illustrate this: Suppose that the follwing form will | |
207 | be memoized concurrently by two threads | |
208 | ||
209 | (let ((x 12)) x) | |
210 | ||
211 | Let's first examine the lookup of X in the body. The first thread | |
212 | decides that it has to find the symbol "x" in the environment and | |
213 | starts to scan it. Then the other thread takes over and actually | |
214 | overtakes the first. It looks up "x" and substitutes an | |
215 | appropriate iloc for it. Now the first thread continues and | |
216 | completes its lookup. It comes to exactly the same conclusions as | |
217 | the second one and could - without much ado - just overwrite the | |
218 | iloc with the same iloc. | |
219 | ||
220 | But let's see what will happen when the race occurs while looking | |
221 | up the symbol "let" at the start of the form. It could happen that | |
222 | the second thread interrupts the lookup of the first thread and not | |
223 | only substitutes a gloc for it but goes right ahead and replaces it | |
224 | with the compiled form (#@let* (x 12) x). Now, when the first | |
225 | thread completes its lookup, it would replace the #@let* with a | |
226 | gloc pointing to the "let" binding, effectively reverting the form | |
227 | to (let (x 12) x). This is wrong. It has to detect that it has | |
228 | lost the race and the evaluator has to reconsider the changed form | |
229 | completely. | |
230 | ||
231 | This race condition could be resolved with some kind of traffic | |
232 | light (like mutexes) around scm_lookupcar, but I think that it is | |
233 | best to avoid them in this case. They would serialize memoization | |
234 | completely and because lookup involves calling arbitrary Scheme | |
235 | code (via the lookup-thunk), threads could be blocked for an | |
236 | arbitrary amount of time or even deadlock. But with the current | |
237 | solution a lot of unnecessary work is potentially done. */ | |
238 | ||
239 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
240 | return NULL to indicate a failed lookup due to some race conditions | |
241 | between threads. This only happens when VLOC is the first cell of | |
242 | a special form that will eventually be memoized (like `let', etc.) | |
243 | In that case the whole lookup is bogus and the caller has to | |
244 | reconsider the complete special form. | |
245 | ||
246 | SCM_LOOKUPCAR is still there, of course. It just calls | |
247 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
248 | should only be called when it is known that VLOC is not the first | |
249 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
26d5b9b4 MD |
250 | for NULL. I think I've found the only places where this |
251 | applies. */ | |
f8769b1d MV |
252 | |
253 | #endif /* USE_THREADS */ | |
1cc91f1b | 254 | |
f25f761d GH |
255 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
256 | ||
d0b7bad7 | 257 | #ifdef USE_THREADS |
8ecf1f13 | 258 | static SCM * |
26d5b9b4 | 259 | scm_lookupcar1 (SCM vloc, SCM genv, int check) |
d0b7bad7 MD |
260 | #else |
261 | SCM * | |
26d5b9b4 | 262 | scm_lookupcar (SCM vloc, SCM genv, int check) |
d0b7bad7 | 263 | #endif |
0f2d19dd JB |
264 | { |
265 | SCM env = genv; | |
e3173f93 JB |
266 | register SCM *al, fl, var = SCM_CAR (vloc); |
267 | #ifdef USE_THREADS | |
268 | register SCM var2 = var; | |
269 | #endif | |
0f2d19dd JB |
270 | #ifdef MEMOIZE_LOCALS |
271 | register SCM iloc = SCM_ILOC00; | |
272 | #endif | |
273 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
274 | { | |
790071cd | 275 | if (!SCM_CONSP (SCM_CAR (env))) |
0f2d19dd | 276 | break; |
a23afe53 | 277 | al = SCM_CARLOC (env); |
0f2d19dd JB |
278 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
279 | { | |
280 | if (SCM_NCONSP (fl)) | |
33b97402 | 281 | { |
cf498326 | 282 | if (SCM_EQ_P (fl, var)) |
0f2d19dd JB |
283 | { |
284 | #ifdef MEMOIZE_LOCALS | |
f8769b1d | 285 | #ifdef USE_THREADS |
cf498326 | 286 | if (! SCM_EQ_P (SCM_CAR (vloc), var)) |
f8769b1d MV |
287 | goto race; |
288 | #endif | |
3201d763 | 289 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (iloc) + SCM_ICDR); |
0f2d19dd | 290 | #endif |
a23afe53 | 291 | return SCM_CDRLOC (*al); |
0f2d19dd | 292 | } |
33b97402 MD |
293 | else |
294 | break; | |
295 | } | |
a23afe53 | 296 | al = SCM_CDRLOC (*al); |
cf498326 | 297 | if (SCM_EQ_P (SCM_CAR (fl), var)) |
0f2d19dd JB |
298 | { |
299 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 300 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
301 | if (SCM_UNBNDP (SCM_CAR (*al))) |
302 | { | |
303 | env = SCM_EOL; | |
304 | goto errout; | |
305 | } | |
f8769b1d MV |
306 | #endif |
307 | #ifdef USE_THREADS | |
308 | if (SCM_CAR (vloc) != var) | |
309 | goto race; | |
0f2d19dd | 310 | #endif |
a23afe53 | 311 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 312 | #endif |
a23afe53 | 313 | return SCM_CARLOC (*al); |
0f2d19dd JB |
314 | } |
315 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 316 | iloc = SCM_PACK (SCM_UNPACK (iloc) + SCM_IDINC); |
0f2d19dd JB |
317 | #endif |
318 | } | |
319 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 320 | iloc = SCM_PACK ((~SCM_IDSTMSK) & (SCM_UNPACK(iloc) + SCM_IFRINC)); |
0f2d19dd JB |
321 | #endif |
322 | } | |
323 | { | |
324 | SCM top_thunk, vcell; | |
790071cd | 325 | if (SCM_NIMP (env)) |
0f2d19dd | 326 | { |
790071cd | 327 | top_thunk = SCM_CAR (env); /* env now refers to a top level env thunk */ |
0f2d19dd JB |
328 | env = SCM_CDR (env); |
329 | } | |
330 | else | |
331 | top_thunk = SCM_BOOL_F; | |
332 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
cf498326 | 333 | if (SCM_FALSEP (vcell)) |
0f2d19dd JB |
334 | goto errout; |
335 | else | |
336 | var = vcell; | |
337 | } | |
cf7c17e9 | 338 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
339 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
340 | { | |
341 | var = SCM_CAR (var); | |
342 | errout: | |
f5bf2977 | 343 | /* scm_everr (vloc, genv,...) */ |
26d5b9b4 | 344 | if (check) |
f25f761d GH |
345 | { |
346 | if (SCM_NULLP (env)) | |
70d63753 | 347 | scm_error (scm_unbound_variable_key, NULL, "Unbound variable: ~S", |
f25f761d GH |
348 | scm_cons (var, SCM_EOL), SCM_BOOL_F); |
349 | else | |
70d63753 | 350 | scm_misc_error (NULL, "Damaged environment: ~S", |
f25f761d GH |
351 | scm_cons (var, SCM_EOL)); |
352 | } | |
09e4d064 DH |
353 | else { |
354 | /* A variable could not be found, but we shall not throw an error. */ | |
355 | static SCM undef_object = SCM_UNDEFINED; | |
3201d763 | 356 | return &undef_object; |
09e4d064 | 357 | } |
0f2d19dd JB |
358 | } |
359 | #endif | |
f8769b1d MV |
360 | #ifdef USE_THREADS |
361 | if (SCM_CAR (vloc) != var2) | |
362 | { | |
363 | /* Some other thread has changed the very cell we are working | |
364 | on. In effect, it must have done our job or messed it up | |
365 | completely. */ | |
366 | race: | |
367 | var = SCM_CAR (vloc); | |
3201d763 | 368 | if (SCM_ITAG3 (var) == scm_tc3_cons_gloc) |
f8769b1d MV |
369 | return SCM_GLOC_VAL_LOC (var); |
370 | #ifdef MEMOIZE_LOCALS | |
d1ca2c64 | 371 | if (SCM_ITAG7 (var) == SCM_ITAG7 (SCM_ILOC00)) |
f8769b1d MV |
372 | return scm_ilookup (var, genv); |
373 | #endif | |
374 | /* We can't cope with anything else than glocs and ilocs. When | |
375 | a special form has been memoized (i.e. `let' into `#@let') we | |
376 | return NULL and expect the calling function to do the right | |
377 | thing. For the evaluator, this means going back and redoing | |
378 | the dispatch on the car of the form. */ | |
379 | return NULL; | |
380 | } | |
381 | #endif /* USE_THREADS */ | |
382 | ||
3201d763 | 383 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (var) + scm_tc3_cons_gloc); |
0f2d19dd | 384 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 385 | * but syntax or something.... */ |
a23afe53 | 386 | return SCM_CDRLOC (var); |
0f2d19dd JB |
387 | } |
388 | ||
f8769b1d MV |
389 | #ifdef USE_THREADS |
390 | SCM * | |
6e8d25a6 | 391 | scm_lookupcar (SCM vloc, SCM genv, int check) |
f8769b1d | 392 | { |
26d5b9b4 | 393 | SCM *loc = scm_lookupcar1 (vloc, genv, check); |
f8769b1d MV |
394 | if (loc == NULL) |
395 | abort (); | |
396 | return loc; | |
397 | } | |
f8769b1d MV |
398 | #endif |
399 | ||
0f2d19dd | 400 | #define unmemocar scm_unmemocar |
1cc91f1b | 401 | |
0f2d19dd | 402 | SCM |
6e8d25a6 | 403 | scm_unmemocar (SCM form, SCM env) |
0f2d19dd | 404 | { |
0f2d19dd JB |
405 | SCM c; |
406 | ||
407 | if (SCM_IMP (form)) | |
408 | return form; | |
409 | c = SCM_CAR (form); | |
b0c54567 | 410 | if (SCM_ITAG3 (c) == scm_tc3_cons_gloc) |
a963f787 | 411 | SCM_SETCAR (form, SCM_GLOC_SYM (c)); |
0f2d19dd | 412 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 413 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
414 | else if (SCM_ILOCP (c)) |
415 | { | |
b0c54567 DH |
416 | int ir; |
417 | ||
0f2d19dd JB |
418 | for (ir = SCM_IFRAME (c); ir != 0; --ir) |
419 | env = SCM_CDR (env); | |
420 | env = SCM_CAR (SCM_CAR (env)); | |
421 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
422 | env = SCM_CDR (env); | |
a23afe53 | 423 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 424 | } |
6dbd0af5 | 425 | #endif |
0f2d19dd JB |
426 | #endif |
427 | return form; | |
428 | } | |
429 | ||
1cc91f1b | 430 | |
0f2d19dd | 431 | SCM |
6e8d25a6 | 432 | scm_eval_car (SCM pair, SCM env) |
0f2d19dd | 433 | { |
6cb702da | 434 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
435 | } |
436 | ||
437 | \f | |
438 | /* | |
439 | * The following rewrite expressions and | |
440 | * some memoized forms have different syntax | |
441 | */ | |
442 | ||
3eeba8d4 JB |
443 | const char scm_s_expression[] = "missing or extra expression"; |
444 | const char scm_s_test[] = "bad test"; | |
445 | const char scm_s_body[] = "bad body"; | |
446 | const char scm_s_bindings[] = "bad bindings"; | |
447 | const char scm_s_variable[] = "bad variable"; | |
448 | const char scm_s_clauses[] = "bad or missing clauses"; | |
449 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 450 | |
81123e6d MD |
451 | SCM scm_sym_dot, scm_sym_arrow, scm_sym_else; |
452 | SCM scm_sym_unquote, scm_sym_uq_splicing, scm_sym_apply; | |
453 | ||
454 | SCM scm_f_apply; | |
b8229a3b | 455 | |
6dbd0af5 | 456 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
457 | SCM scm_sym_enter_frame, scm_sym_apply_frame, scm_sym_exit_frame; |
458 | SCM scm_sym_trace; | |
6dbd0af5 | 459 | #endif |
0f2d19dd | 460 | |
0f2d19dd | 461 | |
26d5b9b4 MD |
462 | /* Check that the body denoted by XORIG is valid and rewrite it into |
463 | its internal form. The internal form of a body is just the body | |
464 | itself, but prefixed with an ISYM that denotes to what kind of | |
465 | outer construct this body belongs. A lambda body starts with | |
466 | SCM_IM_LAMBDA, for example, a body of a let starts with SCM_IM_LET, | |
467 | etc. The one exception is a body that belongs to a letrec that has | |
468 | been formed by rewriting internal defines: it starts with | |
469 | SCM_IM_DEFINE. */ | |
470 | ||
471 | /* XXX - Besides controlling the rewriting of internal defines, the | |
472 | additional ISYM could be used for improved error messages. | |
473 | This is not done yet. */ | |
474 | ||
475 | static SCM | |
6e8d25a6 | 476 | scm_m_body (SCM op, SCM xorig, const char *what) |
26d5b9b4 | 477 | { |
ab66ae47 | 478 | SCM_ASSYNT (scm_ilength (xorig) >= 1, xorig, scm_s_expression, what); |
26d5b9b4 MD |
479 | |
480 | /* Don't add another ISYM if one is present already. */ | |
481 | if (SCM_ISYMP (SCM_CAR (xorig))) | |
482 | return xorig; | |
483 | ||
484 | /* Retain possible doc string. */ | |
44d3cb0d | 485 | if (!SCM_CONSP (SCM_CAR (xorig))) |
26d5b9b4 MD |
486 | { |
487 | if (SCM_NNULLP (SCM_CDR(xorig))) | |
488 | return scm_cons (SCM_CAR (xorig), | |
489 | scm_m_body (op, SCM_CDR(xorig), what)); | |
490 | return xorig; | |
491 | } | |
492 | ||
ab66ae47 | 493 | return scm_cons (op, xorig); |
26d5b9b4 MD |
494 | } |
495 | ||
b8229a3b | 496 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
2f0d1375 | 497 | SCM_GLOBAL_SYMBOL(scm_sym_quote, s_quote); |
1cc91f1b | 498 | |
0f2d19dd | 499 | SCM |
6e8d25a6 | 500 | scm_m_quote (SCM xorig, SCM env) |
0f2d19dd | 501 | { |
26d5b9b4 MD |
502 | SCM x = scm_copy_tree (SCM_CDR (xorig)); |
503 | ||
6cb702da | 504 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 505 | xorig, scm_s_expression, s_quote); |
3a3111a8 | 506 | return scm_cons (SCM_IM_QUOTE, x); |
0f2d19dd JB |
507 | } |
508 | ||
509 | ||
1cc91f1b | 510 | |
b8229a3b | 511 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
2f0d1375 | 512 | SCM_GLOBAL_SYMBOL(scm_sym_begin, s_begin); |
b8229a3b | 513 | |
0f2d19dd | 514 | SCM |
6e8d25a6 | 515 | scm_m_begin (SCM xorig, SCM env) |
0f2d19dd | 516 | { |
6cb702da | 517 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 518 | xorig, scm_s_expression, s_begin); |
3a3111a8 | 519 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
0f2d19dd JB |
520 | } |
521 | ||
b8229a3b | 522 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
2f0d1375 | 523 | SCM_GLOBAL_SYMBOL(scm_sym_if, s_if); |
1cc91f1b | 524 | |
0f2d19dd | 525 | SCM |
6e8d25a6 | 526 | scm_m_if (SCM xorig, SCM env) |
0f2d19dd JB |
527 | { |
528 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 529 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
3a3111a8 | 530 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
0f2d19dd JB |
531 | } |
532 | ||
533 | ||
89efbff4 MD |
534 | /* Will go into the RnRS module when Guile is factorized. |
535 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
536 | const char scm_s_set_x[] = "set!"; | |
537 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 538 | |
0f2d19dd | 539 | SCM |
6e8d25a6 | 540 | scm_m_set_x (SCM xorig, SCM env) |
0f2d19dd | 541 | { |
6dbd0af5 | 542 | SCM x = SCM_CDR (xorig); |
89efbff4 | 543 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
cabe682c | 544 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 | 545 | xorig, scm_s_variable, scm_s_set_x); |
3a3111a8 | 546 | return scm_cons (SCM_IM_SET_X, x); |
0f2d19dd JB |
547 | } |
548 | ||
549 | ||
b8229a3b | 550 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
2f0d1375 | 551 | SCM_GLOBAL_SYMBOL(scm_sym_and, s_and); |
1cc91f1b | 552 | |
0f2d19dd | 553 | SCM |
6e8d25a6 | 554 | scm_m_and (SCM xorig, SCM env) |
0f2d19dd JB |
555 | { |
556 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 557 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd | 558 | if (len >= 1) |
3a3111a8 | 559 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); |
0f2d19dd JB |
560 | else |
561 | return SCM_BOOL_T; | |
562 | } | |
563 | ||
b8229a3b | 564 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
2f0d1375 | 565 | SCM_GLOBAL_SYMBOL(scm_sym_or,s_or); |
1cc91f1b | 566 | |
0f2d19dd | 567 | SCM |
6e8d25a6 | 568 | scm_m_or (SCM xorig, SCM env) |
0f2d19dd JB |
569 | { |
570 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 571 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd | 572 | if (len >= 1) |
3a3111a8 | 573 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); |
0f2d19dd JB |
574 | else |
575 | return SCM_BOOL_F; | |
576 | } | |
577 | ||
578 | ||
b8229a3b | 579 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
2f0d1375 | 580 | SCM_GLOBAL_SYMBOL(scm_sym_case, s_case); |
1cc91f1b | 581 | |
0f2d19dd | 582 | SCM |
6e8d25a6 | 583 | scm_m_case (SCM xorig, SCM env) |
0f2d19dd | 584 | { |
26d5b9b4 | 585 | SCM proc, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
b8229a3b | 586 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
587 | while (SCM_NIMP (x = SCM_CDR (x))) |
588 | { | |
589 | proc = SCM_CAR (x); | |
b8229a3b | 590 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da | 591 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
cf498326 | 592 | || SCM_EQ_P (scm_sym_else, SCM_CAR (proc)), |
b8229a3b | 593 | xorig, scm_s_clauses, s_case); |
0f2d19dd | 594 | } |
3a3111a8 | 595 | return scm_cons (SCM_IM_CASE, cdrx); |
0f2d19dd JB |
596 | } |
597 | ||
598 | ||
b8229a3b | 599 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
2f0d1375 | 600 | SCM_GLOBAL_SYMBOL(scm_sym_cond, s_cond); |
b8229a3b | 601 | |
1cc91f1b | 602 | |
0f2d19dd | 603 | SCM |
6e8d25a6 | 604 | scm_m_cond (SCM xorig, SCM env) |
0f2d19dd | 605 | { |
26d5b9b4 | 606 | SCM arg1, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
0f2d19dd | 607 | int len = scm_ilength (x); |
b8229a3b | 608 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
609 | while (SCM_NIMP (x)) |
610 | { | |
611 | arg1 = SCM_CAR (x); | |
612 | len = scm_ilength (arg1); | |
b8229a3b | 613 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
cf498326 | 614 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (arg1))) |
0f2d19dd | 615 | { |
6cb702da | 616 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 617 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 618 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd | 619 | } |
cf498326 | 620 | if (len >= 2 && SCM_EQ_P (scm_sym_arrow, SCM_CAR (SCM_CDR (arg1)))) |
6cb702da | 621 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 622 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
623 | x = SCM_CDR (x); |
624 | } | |
3a3111a8 | 625 | return scm_cons (SCM_IM_COND, cdrx); |
0f2d19dd JB |
626 | } |
627 | ||
b8229a3b | 628 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
2f0d1375 | 629 | SCM_GLOBAL_SYMBOL(scm_sym_lambda, s_lambda); |
1cc91f1b | 630 | |
0f2d19dd | 631 | SCM |
6e8d25a6 | 632 | scm_m_lambda (SCM xorig, SCM env) |
0f2d19dd JB |
633 | { |
634 | SCM proc, x = SCM_CDR (xorig); | |
26d5b9b4 | 635 | if (scm_ilength (x) < 2) |
0f2d19dd JB |
636 | goto badforms; |
637 | proc = SCM_CAR (x); | |
33b97402 MD |
638 | if (SCM_NULLP (proc)) |
639 | goto memlambda; | |
cf498326 | 640 | if (SCM_EQ_P (SCM_IM_LET, proc)) /* named let */ |
26d5b9b4 | 641 | goto memlambda; |
33b97402 MD |
642 | if (SCM_IMP (proc)) |
643 | goto badforms; | |
644 | if (SCM_SYMBOLP (proc)) | |
645 | goto memlambda; | |
646 | if (SCM_NCONSP (proc)) | |
647 | goto badforms; | |
648 | while (SCM_NIMP (proc)) | |
0f2d19dd | 649 | { |
33b97402 MD |
650 | if (SCM_NCONSP (proc)) |
651 | { | |
0f2d19dd | 652 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
653 | goto badforms; |
654 | else | |
655 | goto memlambda; | |
656 | } | |
0c95b57d | 657 | if (!SCM_SYMBOLP (SCM_CAR (proc))) |
0f2d19dd JB |
658 | goto badforms; |
659 | proc = SCM_CDR (proc); | |
660 | } | |
ff467021 | 661 | if (SCM_NNULLP (proc)) |
26d5b9b4 MD |
662 | { |
663 | badforms: | |
664 | scm_wta (xorig, scm_s_formals, s_lambda); | |
665 | } | |
666 | ||
667 | memlambda: | |
3a3111a8 MD |
668 | return scm_cons2 (SCM_IM_LAMBDA, SCM_CAR (x), |
669 | scm_m_body (SCM_IM_LAMBDA, SCM_CDR (x), s_lambda)); | |
0f2d19dd JB |
670 | } |
671 | ||
b8229a3b | 672 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
2f0d1375 | 673 | SCM_GLOBAL_SYMBOL(scm_sym_letstar,s_letstar); |
0f2d19dd | 674 | |
1cc91f1b | 675 | |
0f2d19dd | 676 | SCM |
6e8d25a6 | 677 | scm_m_letstar (SCM xorig, SCM env) |
0f2d19dd JB |
678 | { |
679 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
680 | int len = scm_ilength (x); | |
b8229a3b | 681 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 682 | proc = SCM_CAR (x); |
b8229a3b | 683 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
ff467021 | 684 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
685 | { |
686 | arg1 = SCM_CAR (proc); | |
b8229a3b | 687 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
0c95b57d | 688 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, s_letstar); |
0f2d19dd | 689 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 690 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
691 | proc = SCM_CDR (proc); |
692 | } | |
693 | x = scm_cons (vars, SCM_CDR (x)); | |
26d5b9b4 | 694 | |
3a3111a8 MD |
695 | return scm_cons2 (SCM_IM_LETSTAR, SCM_CAR (x), |
696 | scm_m_body (SCM_IM_LETSTAR, SCM_CDR (x), s_letstar)); | |
0f2d19dd JB |
697 | } |
698 | ||
699 | /* DO gets the most radically altered syntax | |
700 | (do ((<var1> <init1> <step1>) | |
701 | (<var2> <init2>) | |
702 | ... ) | |
703 | (<test> <return>) | |
704 | <body>) | |
705 | ;; becomes | |
706 | (do_mem (varn ... var2 var1) | |
707 | (<init1> <init2> ... <initn>) | |
708 | (<test> <return>) | |
709 | (<body>) | |
710 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
711 | */ | |
712 | ||
b8229a3b | 713 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
2f0d1375 | 714 | SCM_GLOBAL_SYMBOL(scm_sym_do, s_do); |
1cc91f1b | 715 | |
0f2d19dd | 716 | SCM |
6e8d25a6 | 717 | scm_m_do (SCM xorig, SCM env) |
0f2d19dd JB |
718 | { |
719 | SCM x = SCM_CDR (xorig), arg1, proc; | |
720 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
721 | SCM *initloc = &inits, *steploc = &steps; | |
722 | int len = scm_ilength (x); | |
6cb702da | 723 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 724 | proc = SCM_CAR (x); |
6cb702da | 725 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
ff467021 | 726 | while (SCM_NIMP(proc)) |
0f2d19dd JB |
727 | { |
728 | arg1 = SCM_CAR (proc); | |
729 | len = scm_ilength (arg1); | |
6cb702da | 730 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
0c95b57d | 731 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, "do"); |
0f2d19dd JB |
732 | /* vars reversed here, inits and steps reversed at evaluation */ |
733 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
734 | arg1 = SCM_CDR (arg1); | |
735 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 736 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
737 | arg1 = SCM_CDR (arg1); |
738 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 739 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
740 | proc = SCM_CDR (proc); |
741 | } | |
742 | x = SCM_CDR (x); | |
6cb702da | 743 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
744 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
745 | x = scm_cons2 (vars, inits, x); | |
3a3111a8 | 746 | return scm_cons (SCM_IM_DO, x); |
0f2d19dd JB |
747 | } |
748 | ||
6dbd0af5 MD |
749 | /* evalcar is small version of inline EVALCAR when we don't care about |
750 | * speed | |
751 | */ | |
752 | #define evalcar scm_eval_car | |
0f2d19dd | 753 | |
1cc91f1b | 754 | |
1bbd0b84 | 755 | static SCM iqq (SCM form, SCM env, int depth); |
1cc91f1b | 756 | |
b8229a3b | 757 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
2f0d1375 | 758 | SCM_GLOBAL_SYMBOL(scm_sym_quasiquote, s_quasiquote); |
b8229a3b MS |
759 | |
760 | SCM | |
6e8d25a6 | 761 | scm_m_quasiquote (SCM xorig, SCM env) |
b8229a3b MS |
762 | { |
763 | SCM x = SCM_CDR (xorig); | |
764 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
765 | return iqq (SCM_CAR (x), env, 1); | |
766 | } | |
767 | ||
768 | ||
0f2d19dd | 769 | static SCM |
1bbd0b84 | 770 | iqq (SCM form,SCM env,int depth) |
0f2d19dd JB |
771 | { |
772 | SCM tmp; | |
773 | int edepth = depth; | |
ff467021 JB |
774 | if (SCM_IMP(form)) |
775 | return form; | |
0f2d19dd JB |
776 | if (SCM_VECTORP (form)) |
777 | { | |
b5c2579a | 778 | long i = SCM_VECTOR_LENGTH (form); |
0f2d19dd JB |
779 | SCM *data = SCM_VELTS (form); |
780 | tmp = SCM_EOL; | |
781 | for (; --i >= 0;) | |
782 | tmp = scm_cons (data[i], tmp); | |
783 | return scm_vector (iqq (tmp, env, depth)); | |
784 | } | |
ff467021 JB |
785 | if (SCM_NCONSP(form)) |
786 | return form; | |
0f2d19dd | 787 | tmp = SCM_CAR (form); |
cf498326 | 788 | if (SCM_EQ_P (scm_sym_quasiquote, tmp)) |
0f2d19dd JB |
789 | { |
790 | depth++; | |
791 | goto label; | |
792 | } | |
cf498326 | 793 | if (SCM_EQ_P (scm_sym_unquote, tmp)) |
0f2d19dd JB |
794 | { |
795 | --depth; | |
796 | label: | |
797 | form = SCM_CDR (form); | |
0c95b57d GB |
798 | SCM_ASSERT (SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
799 | form, SCM_ARG1, s_quasiquote); | |
0f2d19dd JB |
800 | if (0 == depth) |
801 | return evalcar (form, env); | |
802 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
803 | } | |
cf498326 | 804 | if (SCM_NIMP (tmp) && (SCM_EQ_P (scm_sym_uq_splicing, SCM_CAR (tmp)))) |
0f2d19dd JB |
805 | { |
806 | tmp = SCM_CDR (tmp); | |
807 | if (0 == --edepth) | |
808 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
809 | } | |
810 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
811 | } | |
812 | ||
813 | /* Here are acros which return values rather than code. */ | |
814 | ||
a570e93a MD |
815 | SCM_SYNTAX (s_delay, "delay", scm_makmmacro, scm_m_delay); |
816 | SCM_GLOBAL_SYMBOL (scm_sym_delay, s_delay); | |
1cc91f1b | 817 | |
0f2d19dd | 818 | SCM |
6e8d25a6 | 819 | scm_m_delay (SCM xorig, SCM env) |
0f2d19dd | 820 | { |
6cb702da | 821 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
a570e93a | 822 | return scm_cons2 (SCM_IM_DELAY, SCM_EOL, SCM_CDR (xorig)); |
0f2d19dd JB |
823 | } |
824 | ||
1cc91f1b | 825 | |
b8229a3b | 826 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
2f0d1375 | 827 | SCM_GLOBAL_SYMBOL(scm_sym_define, s_define); |
1cc91f1b | 828 | |
0f2d19dd | 829 | SCM |
6e8d25a6 | 830 | scm_m_define (SCM x, SCM env) |
0f2d19dd JB |
831 | { |
832 | SCM proc, arg1 = x; | |
833 | x = SCM_CDR (x); | |
b8229a3b | 834 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
835 | proc = SCM_CAR (x); |
836 | x = SCM_CDR (x); | |
0c95b57d | 837 | while (SCM_CONSP (proc)) |
0f2d19dd | 838 | { /* nested define syntax */ |
2f0d1375 | 839 | x = scm_cons (scm_cons2 (scm_sym_lambda, SCM_CDR (proc), x), SCM_EOL); |
0f2d19dd JB |
840 | proc = SCM_CAR (proc); |
841 | } | |
0c95b57d | 842 | SCM_ASSYNT (SCM_SYMBOLP (proc), |
b8229a3b MS |
843 | arg1, scm_s_variable, s_define); |
844 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
845 | if (SCM_TOP_LEVEL (env)) |
846 | { | |
847 | x = evalcar (x, env); | |
6dbd0af5 | 848 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
849 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
850 | { | |
851 | arg1 = x; | |
852 | proc: | |
853 | if (SCM_CLOSUREP (arg1) | |
854 | /* Only the first definition determines the name. */ | |
cf498326 | 855 | && SCM_FALSEP (scm_procedure_property (arg1, scm_sym_name))) |
2f0d1375 | 856 | scm_set_procedure_property_x (arg1, scm_sym_name, proc); |
80ea260c | 857 | else if (SCM_TYP16 (arg1) == scm_tc16_macro |
cf498326 | 858 | && !SCM_EQ_P (SCM_CDR (arg1), arg1)) |
80ea260c MD |
859 | { |
860 | arg1 = SCM_CDR (arg1); | |
861 | goto proc; | |
862 | } | |
863 | } | |
6dbd0af5 | 864 | #endif |
6cb702da | 865 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
a23afe53 | 866 | SCM_SETCDR (arg1, x); |
0f2d19dd | 867 | #ifdef SICP |
2f0d1375 | 868 | return scm_cons2 (scm_sym_quote, SCM_CAR (arg1), SCM_EOL); |
0f2d19dd JB |
869 | #else |
870 | return SCM_UNSPECIFIED; | |
871 | #endif | |
872 | } | |
873 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
874 | } | |
6dbd0af5 | 875 | |
0f2d19dd JB |
876 | /* end of acros */ |
877 | ||
26d5b9b4 | 878 | static SCM |
6e8d25a6 | 879 | scm_m_letrec1 (SCM op, SCM imm, SCM xorig, SCM env) |
0f2d19dd JB |
880 | { |
881 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
3db4adfc | 882 | char *what = SCM_SYMBOL_CHARS (SCM_CAR (xorig)); |
0f2d19dd JB |
883 | SCM x = cdrx, proc, arg1; /* structure traversers */ |
884 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
885 | ||
0f2d19dd | 886 | proc = SCM_CAR (x); |
ab66ae47 | 887 | SCM_ASSYNT (scm_ilength (proc) >= 1, xorig, scm_s_bindings, what); |
0f2d19dd JB |
888 | do |
889 | { | |
890 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
891 | arg1 = SCM_CAR (proc); | |
ab66ae47 DH |
892 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, what); |
893 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, what); | |
0f2d19dd JB |
894 | vars = scm_cons (SCM_CAR (arg1), vars); |
895 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 896 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd | 897 | } |
ff467021 | 898 | while (SCM_NIMP (proc = SCM_CDR (proc))); |
26d5b9b4 | 899 | |
3a3111a8 MD |
900 | return scm_cons2 (op, vars, |
901 | scm_cons (inits, scm_m_body (imm, SCM_CDR (x), what))); | |
0f2d19dd JB |
902 | } |
903 | ||
26d5b9b4 | 904 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
2f0d1375 | 905 | SCM_GLOBAL_SYMBOL(scm_sym_letrec, s_letrec); |
26d5b9b4 MD |
906 | |
907 | SCM | |
6e8d25a6 | 908 | scm_m_letrec (SCM xorig, SCM env) |
26d5b9b4 MD |
909 | { |
910 | SCM x = SCM_CDR (xorig); | |
911 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_letrec); | |
912 | ||
913 | if (SCM_NULLP (SCM_CAR (x))) /* null binding, let* faster */ | |
3a3111a8 MD |
914 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), SCM_EOL, |
915 | scm_m_body (SCM_IM_LETREC, | |
916 | SCM_CDR (x), | |
917 | s_letrec)), | |
26d5b9b4 MD |
918 | env); |
919 | else | |
920 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LETREC, xorig, env); | |
921 | } | |
1cc91f1b | 922 | |
b8229a3b | 923 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
2f0d1375 | 924 | SCM_GLOBAL_SYMBOL(scm_sym_let, s_let); |
b8229a3b | 925 | |
0f2d19dd | 926 | SCM |
6e8d25a6 | 927 | scm_m_let (SCM xorig, SCM env) |
0f2d19dd JB |
928 | { |
929 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
930 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
931 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
932 | ||
b8229a3b | 933 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
934 | proc = SCM_CAR (x); |
935 | if (SCM_NULLP (proc) | |
0c95b57d | 936 | || (SCM_CONSP (proc) |
26d5b9b4 MD |
937 | && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) |
938 | { | |
939 | /* null or single binding, let* is faster */ | |
3a3111a8 MD |
940 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), proc, |
941 | scm_m_body (SCM_IM_LET, | |
942 | SCM_CDR (x), | |
943 | s_let)), | |
26d5b9b4 MD |
944 | env); |
945 | } | |
946 | ||
b8229a3b | 947 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
26d5b9b4 MD |
948 | if (SCM_CONSP (proc)) |
949 | { | |
950 | /* plain let, proc is <bindings> */ | |
951 | return scm_m_letrec1 (SCM_IM_LET, SCM_IM_LET, xorig, env); | |
952 | } | |
953 | ||
0f2d19dd | 954 | if (!SCM_SYMBOLP (proc)) |
b8229a3b | 955 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
956 | name = proc; /* named let, build equiv letrec */ |
957 | x = SCM_CDR (x); | |
b8229a3b | 958 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
26d5b9b4 | 959 | proc = SCM_CAR (x); /* bindings list */ |
b8229a3b | 960 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
ff467021 | 961 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
962 | { /* vars and inits both in order */ |
963 | arg1 = SCM_CAR (proc); | |
b8229a3b | 964 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
0c95b57d | 965 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 966 | xorig, scm_s_variable, s_let); |
0f2d19dd | 967 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 968 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 969 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 970 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
971 | proc = SCM_CDR (proc); |
972 | } | |
26d5b9b4 | 973 | |
2f0d1375 | 974 | proc = scm_cons2 (scm_sym_lambda, vars, |
26d5b9b4 | 975 | scm_m_body (SCM_IM_LET, SCM_CDR (x), "let")); |
2f0d1375 | 976 | proc = scm_cons2 (scm_sym_let, scm_cons (scm_cons2 (name, proc, SCM_EOL), |
26d5b9b4 MD |
977 | SCM_EOL), |
978 | scm_acons (name, inits, SCM_EOL)); | |
979 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LET, proc, env); | |
0f2d19dd JB |
980 | } |
981 | ||
982 | ||
81123e6d MD |
983 | SCM_SYNTAX (s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
984 | SCM_GLOBAL_SYMBOL (scm_sym_atapply, s_atapply); | |
985 | SCM_GLOBAL_SYMBOL (scm_sym_apply, s_atapply + 1); | |
1cc91f1b | 986 | |
0f2d19dd | 987 | SCM |
6e8d25a6 | 988 | scm_m_apply (SCM xorig, SCM env) |
0f2d19dd | 989 | { |
6cb702da | 990 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 991 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
992 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
993 | } | |
994 | ||
b8229a3b MS |
995 | |
996 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
2f0d1375 | 997 | SCM_GLOBAL_SYMBOL(scm_sym_atcall_cc,s_atcall_cc); |
0f2d19dd | 998 | |
1cc91f1b | 999 | |
0f2d19dd | 1000 | SCM |
6e8d25a6 | 1001 | scm_m_cont (SCM xorig, SCM env) |
0f2d19dd | 1002 | { |
6cb702da | 1003 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1004 | xorig, scm_s_expression, s_atcall_cc); |
3a3111a8 | 1005 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
0f2d19dd JB |
1006 | } |
1007 | ||
73b64342 MD |
1008 | /* Multi-language support */ |
1009 | ||
43a912cf MD |
1010 | SCM scm_lisp_nil; |
1011 | SCM scm_lisp_t; | |
73b64342 MD |
1012 | |
1013 | SCM_SYNTAX (s_nil_cond, "nil-cond", scm_makmmacro, scm_m_nil_cond); | |
1014 | ||
1015 | SCM | |
1016 | scm_m_nil_cond (SCM xorig, SCM env) | |
1017 | { | |
1018 | int len = scm_ilength (SCM_CDR (xorig)); | |
1019 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1020 | scm_s_expression, "nil-cond"); | |
1021 | return scm_cons (SCM_IM_NIL_COND, SCM_CDR (xorig)); | |
1022 | } | |
1023 | ||
1024 | SCM_SYNTAX (s_nil_ify, "nil-ify", scm_makmmacro, scm_m_nil_ify); | |
1025 | ||
1026 | SCM | |
1027 | scm_m_nil_ify (SCM xorig, SCM env) | |
1028 | { | |
1029 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1030 | xorig, scm_s_expression, "nil-ify"); | |
1031 | return scm_cons (SCM_IM_NIL_IFY, SCM_CDR (xorig)); | |
1032 | } | |
1033 | ||
1034 | SCM_SYNTAX (s_t_ify, "t-ify", scm_makmmacro, scm_m_t_ify); | |
1035 | ||
1036 | SCM | |
1037 | scm_m_t_ify (SCM xorig, SCM env) | |
1038 | { | |
1039 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1040 | xorig, scm_s_expression, "t-ify"); | |
1041 | return scm_cons (SCM_IM_T_IFY, SCM_CDR (xorig)); | |
1042 | } | |
1043 | ||
1044 | SCM_SYNTAX (s_0_cond, "0-cond", scm_makmmacro, scm_m_0_cond); | |
1045 | ||
1046 | SCM | |
1047 | scm_m_0_cond (SCM xorig, SCM env) | |
1048 | { | |
1049 | int len = scm_ilength (SCM_CDR (xorig)); | |
1050 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1051 | scm_s_expression, "0-cond"); | |
1052 | return scm_cons (SCM_IM_0_COND, SCM_CDR (xorig)); | |
1053 | } | |
1054 | ||
1055 | SCM_SYNTAX (s_0_ify, "0-ify", scm_makmmacro, scm_m_0_ify); | |
1056 | ||
1057 | SCM | |
1058 | scm_m_0_ify (SCM xorig, SCM env) | |
1059 | { | |
1060 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1061 | xorig, scm_s_expression, "0-ify"); | |
1062 | return scm_cons (SCM_IM_0_IFY, SCM_CDR (xorig)); | |
1063 | } | |
1064 | ||
1065 | SCM_SYNTAX (s_1_ify, "1-ify", scm_makmmacro, scm_m_1_ify); | |
1066 | ||
1067 | SCM | |
1068 | scm_m_1_ify (SCM xorig, SCM env) | |
1069 | { | |
1070 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1071 | xorig, scm_s_expression, "1-ify"); | |
1072 | return scm_cons (SCM_IM_1_IFY, SCM_CDR (xorig)); | |
1073 | } | |
1074 | ||
1075 | SCM_SYNTAX (s_atfop, "@fop", scm_makmmacro, scm_m_atfop); | |
1076 | ||
1077 | SCM | |
1078 | scm_m_atfop (SCM xorig, SCM env) | |
1079 | { | |
1080 | SCM x = SCM_CDR (xorig), vcell; | |
1081 | SCM_ASSYNT (scm_ilength (x) >= 1, xorig, scm_s_expression, "@fop"); | |
1082 | vcell = scm_symbol_fref (SCM_CAR (x)); | |
0c95b57d | 1083 | SCM_ASSYNT (SCM_CONSP (vcell), x, |
73b64342 | 1084 | "Symbol's function definition is void", NULL); |
3201d763 | 1085 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (vcell) + scm_tc3_cons_gloc); |
73b64342 MD |
1086 | return x; |
1087 | } | |
1088 | ||
1089 | SCM_SYNTAX (s_atbind, "@bind", scm_makmmacro, scm_m_atbind); | |
1090 | ||
1091 | SCM | |
1092 | scm_m_atbind (SCM xorig, SCM env) | |
1093 | { | |
1094 | SCM x = SCM_CDR (xorig); | |
1095 | SCM_ASSYNT (scm_ilength (x) > 1, xorig, scm_s_expression, "@bind"); | |
1096 | ||
1097 | if (SCM_IMP (env)) | |
1098 | env = SCM_BOOL_F; | |
1099 | else | |
1100 | { | |
1101 | while (SCM_NIMP (SCM_CDR (env))) | |
1102 | env = SCM_CDR (env); | |
1103 | env = SCM_CAR (env); | |
1104 | if (SCM_CONSP (env)) | |
1105 | env = SCM_BOOL_F; | |
1106 | } | |
1107 | ||
1108 | x = SCM_CAR (x); | |
1109 | while (SCM_NIMP (x)) | |
1110 | { | |
3201d763 | 1111 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (scm_sym2vcell (SCM_CAR (x), env, SCM_BOOL_T)) + scm_tc3_cons_gloc); |
73b64342 MD |
1112 | x = SCM_CDR (x); |
1113 | } | |
1114 | return scm_cons (SCM_IM_BIND, SCM_CDR (xorig)); | |
1115 | } | |
73b64342 | 1116 | |
26d5b9b4 MD |
1117 | SCM |
1118 | scm_m_expand_body (SCM xorig, SCM env) | |
1119 | { | |
1120 | SCM form, x = SCM_CDR (xorig), defs = SCM_EOL; | |
1121 | char *what = SCM_ISYMCHARS (SCM_CAR (xorig)) + 2; | |
1122 | ||
1123 | while (SCM_NIMP (x)) | |
1124 | { | |
1125 | form = SCM_CAR (x); | |
1126 | if (SCM_IMP (form) || SCM_NCONSP (form)) | |
1127 | break; | |
1128 | if (SCM_IMP (SCM_CAR (form))) | |
1129 | break; | |
1130 | if (!SCM_SYMBOLP (SCM_CAR (form))) | |
1131 | break; | |
1132 | ||
3a3111a8 MD |
1133 | form = scm_macroexp (scm_cons_source (form, |
1134 | SCM_CAR (form), | |
1135 | SCM_CDR (form)), | |
1136 | env); | |
26d5b9b4 | 1137 | |
cf498326 | 1138 | if (SCM_EQ_P (SCM_IM_DEFINE, SCM_CAR (form))) |
26d5b9b4 MD |
1139 | { |
1140 | defs = scm_cons (SCM_CDR (form), defs); | |
1141 | x = SCM_CDR(x); | |
1142 | } | |
1143 | else if (SCM_NIMP(defs)) | |
1144 | { | |
1145 | break; | |
1146 | } | |
cf498326 | 1147 | else if (SCM_EQ_P (SCM_IM_BEGIN, SCM_CAR (form))) |
26d5b9b4 MD |
1148 | { |
1149 | x = scm_append (scm_cons2 (SCM_CDR (form), SCM_CDR (x), SCM_EOL)); | |
1150 | } | |
1151 | else | |
1152 | { | |
1153 | x = scm_cons (form, SCM_CDR(x)); | |
1154 | break; | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | SCM_ASSYNT (SCM_NIMP (x), SCM_CDR (xorig), scm_s_body, what); | |
1159 | if (SCM_NIMP (defs)) | |
1160 | { | |
1161 | x = scm_cons (scm_m_letrec1 (SCM_IM_LETREC, | |
1162 | SCM_IM_DEFINE, | |
2f0d1375 | 1163 | scm_cons2 (scm_sym_define, defs, x), |
26d5b9b4 MD |
1164 | env), |
1165 | SCM_EOL); | |
1166 | } | |
1167 | ||
1168 | SCM_DEFER_INTS; | |
1169 | SCM_SETCAR (xorig, SCM_CAR (x)); | |
1170 | SCM_SETCDR (xorig, SCM_CDR (x)); | |
1171 | SCM_ALLOW_INTS; | |
1172 | ||
1173 | return xorig; | |
1174 | } | |
1175 | ||
1176 | SCM | |
1177 | scm_macroexp (SCM x, SCM env) | |
1178 | { | |
1179 | SCM res, proc; | |
1180 | ||
1181 | /* Don't bother to produce error messages here. We get them when we | |
1182 | eventually execute the code for real. */ | |
1183 | ||
1184 | macro_tail: | |
44d3cb0d | 1185 | if (!SCM_SYMBOLP (SCM_CAR (x))) |
26d5b9b4 MD |
1186 | return x; |
1187 | ||
1188 | #ifdef USE_THREADS | |
1189 | { | |
1190 | SCM *proc_ptr = scm_lookupcar1 (x, env, 0); | |
1191 | if (proc_ptr == NULL) | |
1192 | { | |
1193 | /* We have lost the race. */ | |
1194 | goto macro_tail; | |
1195 | } | |
1196 | proc = *proc_ptr; | |
1197 | } | |
1198 | #else | |
1199 | proc = *scm_lookupcar (x, env, 0); | |
1200 | #endif | |
1201 | ||
1202 | /* Only handle memoizing macros. `Acros' and `macros' are really | |
1203 | special forms and should not be evaluated here. */ | |
1204 | ||
1205 | if (SCM_IMP (proc) | |
1206 | || scm_tc16_macro != SCM_TYP16 (proc) | |
445f675c | 1207 | || (SCM_CELL_WORD_0 (proc) >> 16) != 2) |
26d5b9b4 MD |
1208 | return x; |
1209 | ||
1210 | unmemocar (x, env); | |
1211 | res = scm_apply (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1212 | ||
1213 | if (scm_ilength (res) <= 0) | |
1214 | res = scm_cons2 (SCM_IM_BEGIN, res, SCM_EOL); | |
1215 | ||
26d5b9b4 MD |
1216 | SCM_DEFER_INTS; |
1217 | SCM_SETCAR (x, SCM_CAR (res)); | |
1218 | SCM_SETCDR (x, SCM_CDR (res)); | |
1219 | SCM_ALLOW_INTS; | |
1220 | ||
1221 | goto macro_tail; | |
1222 | } | |
73b64342 | 1223 | |
6dbd0af5 MD |
1224 | /* scm_unmemocopy takes a memoized expression together with its |
1225 | * environment and rewrites it to its original form. Thus, it is the | |
1226 | * inversion of the rewrite rules above. The procedure is not | |
1227 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1228 | * code of a closure, in scm_procedure_source, in display_frame when |
1229 | * generating the source for a stackframe in a backtrace, and in | |
1230 | * display_expression. | |
6dbd0af5 MD |
1231 | */ |
1232 | ||
26d5b9b4 MD |
1233 | /* We should introduce an anti-macro interface so that it is possible |
1234 | * to plug in transformers in both directions from other compilation | |
1235 | * units. unmemocopy could then dispatch to anti-macro transformers. | |
1236 | * (Those transformers could perhaps be written in slightly more | |
1237 | * readable style... :) | |
1238 | */ | |
1239 | ||
f1267706 | 1240 | #define SCM_BIT8(x) (127 & SCM_UNPACK (x)) |
c209c88e | 1241 | |
6dbd0af5 | 1242 | static SCM |
1bbd0b84 | 1243 | unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1244 | { |
1245 | SCM ls, z; | |
1246 | #ifdef DEBUG_EXTENSIONS | |
1247 | SCM p; | |
1248 | #endif | |
1249 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1250 | return x; | |
1251 | #ifdef DEBUG_EXTENSIONS | |
1252 | p = scm_whash_lookup (scm_source_whash, x); | |
1253 | #endif | |
1254 | switch (SCM_TYP7 (x)) | |
1255 | { | |
c209c88e | 1256 | case SCM_BIT8(SCM_IM_AND): |
2f0d1375 | 1257 | ls = z = scm_cons (scm_sym_and, SCM_UNSPECIFIED); |
6dbd0af5 | 1258 | break; |
c209c88e | 1259 | case SCM_BIT8(SCM_IM_BEGIN): |
2f0d1375 | 1260 | ls = z = scm_cons (scm_sym_begin, SCM_UNSPECIFIED); |
6dbd0af5 | 1261 | break; |
c209c88e | 1262 | case SCM_BIT8(SCM_IM_CASE): |
2f0d1375 | 1263 | ls = z = scm_cons (scm_sym_case, SCM_UNSPECIFIED); |
6dbd0af5 | 1264 | break; |
c209c88e | 1265 | case SCM_BIT8(SCM_IM_COND): |
2f0d1375 | 1266 | ls = z = scm_cons (scm_sym_cond, SCM_UNSPECIFIED); |
6dbd0af5 | 1267 | break; |
c209c88e | 1268 | case SCM_BIT8(SCM_IM_DO): |
2f0d1375 | 1269 | ls = scm_cons (scm_sym_do, SCM_UNSPECIFIED); |
6dbd0af5 | 1270 | goto transform; |
c209c88e | 1271 | case SCM_BIT8(SCM_IM_IF): |
2f0d1375 | 1272 | ls = z = scm_cons (scm_sym_if, SCM_UNSPECIFIED); |
6dbd0af5 | 1273 | break; |
c209c88e | 1274 | case SCM_BIT8(SCM_IM_LET): |
2f0d1375 | 1275 | ls = scm_cons (scm_sym_let, SCM_UNSPECIFIED); |
6dbd0af5 | 1276 | goto transform; |
c209c88e | 1277 | case SCM_BIT8(SCM_IM_LETREC): |
6dbd0af5 MD |
1278 | { |
1279 | SCM f, v, e, s; | |
2f0d1375 | 1280 | ls = scm_cons (scm_sym_letrec, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1281 | transform: |
1282 | x = SCM_CDR (x); | |
26d5b9b4 | 1283 | /* binding names */ |
6dbd0af5 MD |
1284 | f = v = SCM_CAR (x); |
1285 | x = SCM_CDR (x); | |
e2806c10 | 1286 | z = EXTEND_ENV (f, SCM_EOL, env); |
26d5b9b4 | 1287 | /* inits */ |
6dbd0af5 | 1288 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
cf498326 | 1289 | SCM_EQ_P (SCM_CAR (ls), scm_sym_letrec) ? z : env)); |
6dbd0af5 | 1290 | env = z; |
26d5b9b4 | 1291 | /* increments */ |
cf498326 | 1292 | s = SCM_EQ_P (SCM_CAR (ls), scm_sym_do) |
6dbd0af5 MD |
1293 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) |
1294 | : f; | |
26d5b9b4 | 1295 | /* build transformed binding list */ |
6dbd0af5 | 1296 | z = SCM_EOL; |
1bd07992 | 1297 | while (SCM_NIMP (v)) |
6dbd0af5 MD |
1298 | { |
1299 | z = scm_acons (SCM_CAR (v), | |
1300 | scm_cons (SCM_CAR (e), | |
cf498326 | 1301 | SCM_EQ_P (SCM_CAR (s), SCM_CAR (v)) |
6dbd0af5 MD |
1302 | ? SCM_EOL |
1303 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1304 | z); | |
1305 | v = SCM_CDR (v); | |
1306 | e = SCM_CDR (e); | |
1307 | s = SCM_CDR (s); | |
1308 | } | |
a23afe53 MD |
1309 | z = scm_cons (z, SCM_UNSPECIFIED); |
1310 | SCM_SETCDR (ls, z); | |
cf498326 | 1311 | if (SCM_EQ_P (SCM_CAR (ls), scm_sym_do)) |
6dbd0af5 MD |
1312 | { |
1313 | x = SCM_CDR (x); | |
26d5b9b4 | 1314 | /* test clause */ |
a23afe53 | 1315 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1316 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1317 | z = SCM_CDR (z); |
1318 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
26d5b9b4 MD |
1319 | /* body forms are now to be found in SCM_CDR (x) |
1320 | (this is how *real* code look like! :) */ | |
6dbd0af5 MD |
1321 | } |
1322 | break; | |
1323 | } | |
c209c88e | 1324 | case SCM_BIT8(SCM_IM_LETSTAR): |
6dbd0af5 MD |
1325 | { |
1326 | SCM b, y; | |
1327 | x = SCM_CDR (x); | |
1328 | b = SCM_CAR (x); | |
1329 | y = SCM_EOL; | |
1330 | if SCM_IMP (b) | |
1331 | { | |
e2806c10 | 1332 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1333 | goto letstar; |
1334 | } | |
1335 | y = z = scm_acons (SCM_CAR (b), | |
1336 | unmemocar ( | |
1337 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1338 | SCM_UNSPECIFIED); | |
e2806c10 | 1339 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1340 | b = SCM_CDR (SCM_CDR (b)); |
1341 | if (SCM_IMP (b)) | |
1342 | { | |
1343 | SCM_SETCDR (y, SCM_EOL); | |
2f0d1375 | 1344 | ls = scm_cons (scm_sym_let, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1345 | break; |
1346 | } | |
1347 | do | |
1348 | { | |
a23afe53 MD |
1349 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1350 | unmemocar ( | |
6dbd0af5 | 1351 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1352 | SCM_UNSPECIFIED)); |
1353 | z = SCM_CDR (z); | |
e2806c10 | 1354 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1355 | b = SCM_CDR (SCM_CDR (b)); |
1356 | } | |
ff467021 | 1357 | while (SCM_NIMP (b)); |
a23afe53 | 1358 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 | 1359 | letstar: |
2f0d1375 | 1360 | ls = scm_cons (scm_sym_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1361 | break; |
1362 | } | |
c209c88e | 1363 | case SCM_BIT8(SCM_IM_OR): |
2f0d1375 | 1364 | ls = z = scm_cons (scm_sym_or, SCM_UNSPECIFIED); |
6dbd0af5 | 1365 | break; |
c209c88e | 1366 | case SCM_BIT8(SCM_IM_LAMBDA): |
6dbd0af5 | 1367 | x = SCM_CDR (x); |
2f0d1375 | 1368 | ls = scm_cons (scm_sym_lambda, |
6dbd0af5 | 1369 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); |
e2806c10 | 1370 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 | 1371 | break; |
c209c88e | 1372 | case SCM_BIT8(SCM_IM_QUOTE): |
2f0d1375 | 1373 | ls = z = scm_cons (scm_sym_quote, SCM_UNSPECIFIED); |
6dbd0af5 | 1374 | break; |
c209c88e | 1375 | case SCM_BIT8(SCM_IM_SET_X): |
89efbff4 | 1376 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); |
6dbd0af5 | 1377 | break; |
c209c88e | 1378 | case SCM_BIT8(SCM_IM_DEFINE): |
6dbd0af5 MD |
1379 | { |
1380 | SCM n; | |
1381 | x = SCM_CDR (x); | |
2f0d1375 | 1382 | ls = scm_cons (scm_sym_define, |
6dbd0af5 MD |
1383 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); |
1384 | if (SCM_NNULLP (env)) | |
a23afe53 | 1385 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1386 | break; |
1387 | } | |
c209c88e | 1388 | case SCM_BIT8(SCM_MAKISYM (0)): |
6dbd0af5 MD |
1389 | z = SCM_CAR (x); |
1390 | if (!SCM_ISYMP (z)) | |
1391 | goto unmemo; | |
ff467021 | 1392 | switch (SCM_ISYMNUM (z)) |
6dbd0af5 MD |
1393 | { |
1394 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2f0d1375 | 1395 | ls = z = scm_cons (scm_sym_atapply, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1396 | goto loop; |
1397 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2f0d1375 | 1398 | ls = z = scm_cons (scm_sym_atcall_cc, SCM_UNSPECIFIED); |
6dbd0af5 | 1399 | goto loop; |
a570e93a MD |
1400 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
1401 | ls = z = scm_cons (scm_sym_delay, SCM_UNSPECIFIED); | |
1402 | x = SCM_CDR (x); | |
1403 | goto loop; | |
6dbd0af5 | 1404 | default: |
fa888178 | 1405 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1406 | } |
1407 | unmemo: | |
1408 | default: | |
1409 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1410 | SCM_UNSPECIFIED), | |
1411 | env); | |
1412 | } | |
1413 | loop: | |
1414 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 | 1415 | { |
44d3cb0d | 1416 | if (SCM_ISYMP (SCM_CAR (x))) |
26d5b9b4 MD |
1417 | /* skip body markers */ |
1418 | continue; | |
a23afe53 MD |
1419 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), |
1420 | SCM_UNSPECIFIED), | |
1421 | env)); | |
1422 | z = SCM_CDR (z); | |
1423 | } | |
1424 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1425 | #ifdef DEBUG_EXTENSIONS |
1426 | if (SCM_NFALSEP (p)) | |
1427 | scm_whash_insert (scm_source_whash, ls, p); | |
1428 | #endif | |
1429 | return ls; | |
1430 | } | |
1431 | ||
1cc91f1b | 1432 | |
6dbd0af5 | 1433 | SCM |
6e8d25a6 | 1434 | scm_unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1435 | { |
1436 | if (SCM_NNULLP (env)) | |
1437 | /* Make a copy of the lowest frame to protect it from | |
1438 | modifications by SCM_IM_DEFINE */ | |
1439 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1440 | else | |
1441 | return unmemocopy (x, env); | |
1442 | } | |
1443 | ||
cf7c17e9 | 1444 | #ifndef SCM_RECKLESS |
1cc91f1b | 1445 | |
0f2d19dd | 1446 | int |
6e8d25a6 | 1447 | scm_badargsp (SCM formals, SCM args) |
0f2d19dd | 1448 | { |
ff467021 | 1449 | while (SCM_NIMP (formals)) |
0f2d19dd | 1450 | { |
ff467021 JB |
1451 | if (SCM_NCONSP (formals)) |
1452 | return 0; | |
1453 | if (SCM_IMP(args)) | |
1454 | return 1; | |
0f2d19dd JB |
1455 | formals = SCM_CDR (formals); |
1456 | args = SCM_CDR (args); | |
1457 | } | |
1458 | return SCM_NNULLP (args) ? 1 : 0; | |
1459 | } | |
1460 | #endif | |
1461 | ||
002f1a5d MD |
1462 | static int |
1463 | scm_badformalsp (SCM closure, int n) | |
1464 | { | |
1465 | SCM formals = SCM_CAR (SCM_CODE (closure)); | |
1466 | while (SCM_NIMP (formals)) | |
1467 | { | |
1468 | if (SCM_NCONSP (formals)) | |
1469 | return 0; | |
1470 | if (n == 0) | |
1471 | return 1; | |
1472 | --n; | |
1473 | formals = SCM_CDR (formals); | |
1474 | } | |
1475 | return n; | |
1476 | } | |
0f2d19dd JB |
1477 | |
1478 | \f | |
6dbd0af5 | 1479 | SCM |
6e8d25a6 | 1480 | scm_eval_args (SCM l, SCM env, SCM proc) |
6dbd0af5 | 1481 | { |
680ed4a8 | 1482 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1483 | while (SCM_NIMP (l)) |
1484 | { | |
cf7c17e9 | 1485 | #ifdef SCM_CAUTIOUS |
44d3cb0d | 1486 | if (SCM_CONSP (l)) |
680ed4a8 MD |
1487 | { |
1488 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1489 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1490 | else |
1491 | res = EVALCELLCAR (l, env); | |
1492 | } | |
3201d763 | 1493 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1494 | { |
3201d763 DH |
1495 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1496 | if (vcell == 0) | |
680ed4a8 | 1497 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1498 | else |
1499 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1500 | } |
1501 | else | |
1502 | goto wrongnumargs; | |
1503 | #else | |
1504 | res = EVALCAR (l, env); | |
1505 | #endif | |
1506 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1507 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1508 | l = SCM_CDR (l); |
1509 | } | |
cf7c17e9 | 1510 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1511 | if (SCM_NNULLP (l)) |
1512 | { | |
1513 | wrongnumargs: | |
1514 | scm_wrong_num_args (proc); | |
1515 | } | |
1516 | #endif | |
1517 | return results; | |
6dbd0af5 | 1518 | } |
c4ac4d88 | 1519 | |
9de33deb MD |
1520 | SCM |
1521 | scm_eval_body (SCM code, SCM env) | |
1522 | { | |
1523 | SCM next; | |
1524 | again: | |
1525 | next = code; | |
1526 | while (SCM_NNULLP (next = SCM_CDR (next))) | |
1527 | { | |
1528 | if (SCM_IMP (SCM_CAR (code))) | |
1529 | { | |
1530 | if (SCM_ISYMP (SCM_CAR (code))) | |
1531 | { | |
1532 | code = scm_m_expand_body (code, env); | |
1533 | goto again; | |
1534 | } | |
1535 | } | |
1536 | else | |
1537 | SCM_XEVAL (SCM_CAR (code), env); | |
1538 | code = next; | |
1539 | } | |
1540 | return SCM_XEVALCAR (code, env); | |
1541 | } | |
1542 | ||
c4ac4d88 | 1543 | |
0f2d19dd JB |
1544 | #endif /* !DEVAL */ |
1545 | ||
6dbd0af5 MD |
1546 | |
1547 | /* SECTION: This code is specific for the debugging support. One | |
1548 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1549 | * defined. | |
1550 | */ | |
1551 | ||
1552 | #ifndef DEVAL | |
1553 | ||
1554 | #define SCM_APPLY scm_apply | |
1555 | #define PREP_APPLY(proc, args) | |
1556 | #define ENTER_APPLY | |
1557 | #define RETURN(x) return x; | |
b7ff98dd MD |
1558 | #ifdef STACK_CHECKING |
1559 | #ifndef NO_CEVAL_STACK_CHECKING | |
1560 | #define EVAL_STACK_CHECKING | |
1561 | #endif | |
6dbd0af5 MD |
1562 | #endif |
1563 | ||
1564 | #else /* !DEVAL */ | |
1565 | ||
0f2d19dd JB |
1566 | #undef SCM_CEVAL |
1567 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1568 | #undef SCM_APPLY | |
1569 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1570 | #undef PREP_APPLY |
1571 | #define PREP_APPLY(p, l) \ | |
1572 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1573 | #undef ENTER_APPLY | |
1574 | #define ENTER_APPLY \ | |
d3a6bc94 | 1575 | do { \ |
b7ff98dd | 1576 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1577 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1578 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1579 | {\ |
156dcb09 | 1580 | SCM tmp, tail = SCM_BOOL(SCM_TRACED_FRAME_P (debug)); \ |
c6a4fbce | 1581 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1582 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1583 | {\ |
c0ab1b8d | 1584 | tmp = scm_make_debugobj (&debug);\ |
2f0d1375 | 1585 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1586 | }\ |
6dbd0af5 MD |
1587 | else\ |
1588 | {\ | |
5f144b10 GH |
1589 | int first;\ |
1590 | tmp = scm_make_continuation (&first);\ | |
1591 | if (first)\ | |
2f0d1375 | 1592 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
6dbd0af5 MD |
1593 | }\ |
1594 | }\ | |
d3a6bc94 | 1595 | } while (0) |
0f2d19dd JB |
1596 | #undef RETURN |
1597 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1598 | #ifdef STACK_CHECKING |
1599 | #ifndef EVAL_STACK_CHECKING | |
1600 | #define EVAL_STACK_CHECKING | |
1601 | #endif | |
6dbd0af5 MD |
1602 | #endif |
1603 | ||
1604 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1605 | * *fixme*: Although efficiency is important here, this state variable | |
1606 | * should probably not be a global. It should be related to the | |
1607 | * current repl. | |
1608 | */ | |
1609 | ||
1cc91f1b | 1610 | |
1bbd0b84 | 1611 | SCM (*scm_ceval_ptr) (SCM x, SCM env); |
0f2d19dd | 1612 | |
1646d37b | 1613 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1614 | * information stack frame. It is accessed very often from the |
1615 | * debugging evaluator, so it should probably not be indirectly | |
1616 | * addressed. Better to save and restore it from the current root at | |
1617 | * any stack swaps. | |
1618 | */ | |
1619 | ||
1646d37b MD |
1620 | #ifndef USE_THREADS |
1621 | scm_debug_frame *scm_last_debug_frame; | |
1622 | #endif | |
6dbd0af5 MD |
1623 | |
1624 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1625 | * stack frames at each real stack frame. | |
1626 | */ | |
1627 | ||
1628 | int scm_debug_eframe_size; | |
1629 | ||
b7ff98dd | 1630 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1631 | |
a74145b8 MD |
1632 | int scm_eval_stack; |
1633 | ||
33b97402 | 1634 | scm_option scm_eval_opts[] = { |
a74145b8 | 1635 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1636 | }; |
1637 | ||
6dbd0af5 | 1638 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1639 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1640 | "*Flyweight representation of the stack at traps." }, | |
1641 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1642 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1643 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1644 | "Record procedure names at definition." }, | |
1645 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1646 | "Display backtrace in anti-chronological order." }, | |
274dc5fd | 1647 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, |
4e646a03 MD |
1648 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1649 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1650 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1651 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1652 | "Maximal number of stored backtrace frames." }, | |
1653 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1654 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1655 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1656 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1657 | }; |
1658 | ||
1659 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1660 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1661 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1662 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1663 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1664 | }; |
1665 | ||
a1ec6916 | 1666 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
1bbd0b84 | 1667 | (SCM setting), |
b380b885 | 1668 | "") |
1bbd0b84 | 1669 | #define FUNC_NAME s_scm_eval_options_interface |
33b97402 MD |
1670 | { |
1671 | SCM ans; | |
1672 | SCM_DEFER_INTS; | |
1673 | ans = scm_options (setting, | |
1674 | scm_eval_opts, | |
1675 | SCM_N_EVAL_OPTIONS, | |
1bbd0b84 | 1676 | FUNC_NAME); |
a74145b8 | 1677 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1678 | SCM_ALLOW_INTS; |
1679 | return ans; | |
1680 | } | |
1bbd0b84 | 1681 | #undef FUNC_NAME |
33b97402 | 1682 | |
a1ec6916 | 1683 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
1bbd0b84 | 1684 | (SCM setting), |
b380b885 | 1685 | "") |
1bbd0b84 | 1686 | #define FUNC_NAME s_scm_evaluator_traps |
33b97402 MD |
1687 | { |
1688 | SCM ans; | |
1689 | SCM_DEFER_INTS; | |
1690 | ans = scm_options (setting, | |
1691 | scm_evaluator_trap_table, | |
1692 | SCM_N_EVALUATOR_TRAPS, | |
1bbd0b84 | 1693 | FUNC_NAME); |
33b97402 | 1694 | SCM_RESET_DEBUG_MODE; |
bfc69694 | 1695 | SCM_ALLOW_INTS; |
33b97402 MD |
1696 | return ans; |
1697 | } | |
1bbd0b84 | 1698 | #undef FUNC_NAME |
33b97402 | 1699 | |
6dbd0af5 | 1700 | SCM |
6e8d25a6 | 1701 | scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc) |
0f2d19dd | 1702 | { |
680ed4a8 | 1703 | SCM *results = lloc, res; |
0f2d19dd JB |
1704 | while (SCM_NIMP (l)) |
1705 | { | |
cf7c17e9 | 1706 | #ifdef SCM_CAUTIOUS |
44d3cb0d | 1707 | if (SCM_CONSP (l)) |
680ed4a8 MD |
1708 | { |
1709 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1710 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1711 | else |
1712 | res = EVALCELLCAR (l, env); | |
1713 | } | |
3201d763 | 1714 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1715 | { |
3201d763 DH |
1716 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1717 | if (vcell == 0) | |
680ed4a8 | 1718 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1719 | else |
1720 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1721 | } |
1722 | else | |
1723 | goto wrongnumargs; | |
1724 | #else | |
1725 | res = EVALCAR (l, env); | |
1726 | #endif | |
1727 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1728 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1729 | l = SCM_CDR (l); |
1730 | } | |
cf7c17e9 | 1731 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1732 | if (SCM_NNULLP (l)) |
1733 | { | |
1734 | wrongnumargs: | |
1735 | scm_wrong_num_args (proc); | |
1736 | } | |
1737 | #endif | |
1738 | return *results; | |
0f2d19dd JB |
1739 | } |
1740 | ||
6dbd0af5 MD |
1741 | #endif /* !DEVAL */ |
1742 | ||
1743 | ||
1744 | /* SECTION: Some local definitions for the evaluator. | |
1745 | */ | |
1746 | ||
1747 | #ifndef DEVAL | |
3201d763 | 1748 | #define CHECK_EQVISH(A,B) (SCM_EQ_P ((A), (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) |
6dbd0af5 MD |
1749 | #endif /* DEVAL */ |
1750 | ||
399dedcc | 1751 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1752 | |
1753 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1754 | * three heads. This code is compiled twice. | |
1755 | */ | |
1756 | ||
0f2d19dd | 1757 | #if 0 |
1cc91f1b | 1758 | |
0f2d19dd | 1759 | SCM |
1bbd0b84 | 1760 | scm_ceval (SCM x, SCM env) |
0f2d19dd JB |
1761 | {} |
1762 | #endif | |
1763 | #if 0 | |
1cc91f1b | 1764 | |
0f2d19dd | 1765 | SCM |
1bbd0b84 | 1766 | scm_deval (SCM x, SCM env) |
0f2d19dd JB |
1767 | {} |
1768 | #endif | |
1769 | ||
6dbd0af5 | 1770 | SCM |
1bbd0b84 | 1771 | SCM_CEVAL (SCM x, SCM env) |
0f2d19dd JB |
1772 | { |
1773 | union | |
1774 | { | |
1775 | SCM *lloc; | |
1776 | SCM arg1; | |
f8769b1d | 1777 | } t; |
6dbd0af5 MD |
1778 | SCM proc, arg2; |
1779 | #ifdef DEVAL | |
c0ab1b8d JB |
1780 | scm_debug_frame debug; |
1781 | scm_debug_info *debug_info_end; | |
1646d37b | 1782 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1783 | debug.status = scm_debug_eframe_size; |
04b6c081 MD |
1784 | /* |
1785 | * The debug.vect contains twice as much scm_debug_info frames as the | |
1786 | * user has specified with (debug-set! frames <n>). | |
1787 | * | |
1788 | * Even frames are eval frames, odd frames are apply frames. | |
1789 | */ | |
c0ab1b8d JB |
1790 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1791 | * sizeof (debug.vect[0])); | |
1792 | debug.info = debug.vect; | |
1793 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1794 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1795 | #endif |
b7ff98dd | 1796 | #ifdef EVAL_STACK_CHECKING |
6f13f9cb MD |
1797 | if (scm_stack_checking_enabled_p |
1798 | && SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc)) | |
6dbd0af5 | 1799 | { |
b7ff98dd | 1800 | #ifdef DEVAL |
6dbd0af5 MD |
1801 | debug.info->e.exp = x; |
1802 | debug.info->e.env = env; | |
b7ff98dd | 1803 | #endif |
6dbd0af5 MD |
1804 | scm_report_stack_overflow (); |
1805 | } | |
1806 | #endif | |
1807 | #ifdef DEVAL | |
1808 | goto start; | |
1809 | #endif | |
1810 | loopnoap: | |
1811 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1812 | loop: | |
1813 | #ifdef DEVAL | |
b7ff98dd MD |
1814 | SCM_CLEAR_ARGSREADY (debug); |
1815 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1816 | --debug.info; |
04b6c081 MD |
1817 | /* |
1818 | * In theory, this should be the only place where it is necessary to | |
1819 | * check for space in debug.vect since both eval frames and | |
1820 | * available space are even. | |
1821 | * | |
1822 | * For this to be the case, however, it is necessary that primitive | |
1823 | * special forms which jump back to `loop', `begin' or some similar | |
1824 | * label call PREP_APPLY. A convenient way to do this is to jump to | |
1825 | * `loopnoap' or `cdrxnoap'. | |
1826 | */ | |
c0ab1b8d | 1827 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1828 | { |
b7ff98dd | 1829 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1830 | debug.info -= 2; |
1831 | } | |
1832 | start: | |
1833 | debug.info->e.exp = x; | |
1834 | debug.info->e.env = env; | |
b6d75948 | 1835 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1836 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1837 | { |
156dcb09 | 1838 | SCM tail = SCM_BOOL(SCM_TAILRECP (debug)); |
b7ff98dd | 1839 | SCM_SET_TAILREC (debug); |
b7ff98dd | 1840 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1841 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1842 | else |
1843 | { | |
5f144b10 GH |
1844 | int first; |
1845 | SCM val = scm_make_continuation (&first); | |
1846 | ||
1847 | if (first) | |
1848 | t.arg1 = val; | |
1849 | else | |
6dbd0af5 | 1850 | { |
5f144b10 | 1851 | x = val; |
6dbd0af5 MD |
1852 | if (SCM_IMP (x)) |
1853 | { | |
1854 | RETURN (x); | |
1855 | } | |
1856 | else | |
1857 | /* This gives the possibility for the debugger to | |
1858 | modify the source expression before evaluation. */ | |
1859 | goto dispatch; | |
1860 | } | |
1861 | } | |
2f0d1375 | 1862 | scm_ithrow (scm_sym_enter_frame, |
6dbd0af5 MD |
1863 | scm_cons2 (t.arg1, tail, |
1864 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1865 | 0); | |
1866 | } | |
6dbd0af5 | 1867 | #endif |
e3173f93 | 1868 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1869 | dispatch: |
e3173f93 | 1870 | #endif |
9cb5124f | 1871 | SCM_TICK; |
0f2d19dd JB |
1872 | switch (SCM_TYP7 (x)) |
1873 | { | |
28b06554 | 1874 | case scm_tc7_symbol: |
0f2d19dd JB |
1875 | /* Only happens when called at top level. |
1876 | */ | |
1877 | x = scm_cons (x, SCM_UNDEFINED); | |
1878 | goto retval; | |
1879 | ||
c209c88e | 1880 | case SCM_BIT8(SCM_IM_AND): |
0f2d19dd JB |
1881 | x = SCM_CDR (x); |
1882 | t.arg1 = x; | |
1883 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1884 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1885 | { | |
1886 | RETURN (SCM_BOOL_F); | |
1887 | } | |
1888 | else | |
1889 | x = t.arg1; | |
6dbd0af5 | 1890 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1891 | goto carloop; |
1892 | ||
c209c88e | 1893 | case SCM_BIT8(SCM_IM_BEGIN): |
6dbd0af5 MD |
1894 | cdrxnoap: |
1895 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1896 | cdrxbegin: |
1897 | x = SCM_CDR (x); | |
1898 | ||
1899 | begin: | |
1900 | t.arg1 = x; | |
1901 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1902 | { | |
26d5b9b4 MD |
1903 | if (SCM_IMP (SCM_CAR (x))) |
1904 | { | |
1905 | if (SCM_ISYMP (SCM_CAR (x))) | |
1906 | { | |
1907 | x = scm_m_expand_body (x, env); | |
1908 | goto begin; | |
1909 | } | |
1910 | } | |
1911 | else | |
1912 | SCM_CEVAL (SCM_CAR (x), env); | |
0f2d19dd JB |
1913 | x = t.arg1; |
1914 | } | |
1915 | ||
1916 | carloop: /* scm_eval car of last form in list */ | |
1917 | if (SCM_NCELLP (SCM_CAR (x))) | |
1918 | { | |
1919 | x = SCM_CAR (x); | |
6cb702da | 1920 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1921 | } |
1922 | ||
1923 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1924 | { | |
1925 | retval: | |
26d5b9b4 | 1926 | RETURN (*scm_lookupcar (x, env, 1)) |
0f2d19dd JB |
1927 | } |
1928 | ||
1929 | x = SCM_CAR (x); | |
1930 | goto loop; /* tail recurse */ | |
1931 | ||
1932 | ||
c209c88e | 1933 | case SCM_BIT8(SCM_IM_CASE): |
0f2d19dd JB |
1934 | x = SCM_CDR (x); |
1935 | t.arg1 = EVALCAR (x, env); | |
1936 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1937 | { | |
1938 | proc = SCM_CAR (x); | |
cf498326 | 1939 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (proc))) |
0f2d19dd JB |
1940 | { |
1941 | x = SCM_CDR (proc); | |
6dbd0af5 | 1942 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1943 | goto begin; |
1944 | } | |
1945 | proc = SCM_CAR (proc); | |
1946 | while (SCM_NIMP (proc)) | |
1947 | { | |
1948 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1949 | { | |
1950 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1951 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1952 | goto begin; |
1953 | } | |
1954 | proc = SCM_CDR (proc); | |
1955 | } | |
1956 | } | |
6dbd0af5 | 1957 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1958 | |
1959 | ||
c209c88e | 1960 | case SCM_BIT8(SCM_IM_COND): |
0f2d19dd JB |
1961 | while (SCM_NIMP (x = SCM_CDR (x))) |
1962 | { | |
1963 | proc = SCM_CAR (x); | |
1964 | t.arg1 = EVALCAR (proc, env); | |
1965 | if (SCM_NFALSEP (t.arg1)) | |
1966 | { | |
1967 | x = SCM_CDR (proc); | |
6dbd0af5 | 1968 | if SCM_NULLP (x) |
0f2d19dd | 1969 | { |
6dbd0af5 | 1970 | RETURN (t.arg1) |
0f2d19dd | 1971 | } |
cf498326 | 1972 | if (! SCM_EQ_P (scm_sym_arrow, SCM_CAR (x))) |
6dbd0af5 MD |
1973 | { |
1974 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1975 | goto begin; | |
1976 | } | |
0f2d19dd JB |
1977 | proc = SCM_CDR (x); |
1978 | proc = EVALCAR (proc, env); | |
1979 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1980 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1981 | ENTER_APPLY; | |
0f2d19dd JB |
1982 | goto evap1; |
1983 | } | |
1984 | } | |
6dbd0af5 | 1985 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1986 | |
1987 | ||
c209c88e | 1988 | case SCM_BIT8(SCM_IM_DO): |
0f2d19dd JB |
1989 | x = SCM_CDR (x); |
1990 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1991 | t.arg1 = SCM_EOL; /* values */ | |
1992 | while (SCM_NIMP (proc)) | |
1993 | { | |
1994 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1995 | proc = SCM_CDR (proc); | |
1996 | } | |
e2806c10 | 1997 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1998 | x = SCM_CDR (SCM_CDR (x)); |
1999 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
2000 | { | |
f3d2630a | 2001 | for (proc = SCM_CADR (x); SCM_NIMP (proc); proc = SCM_CDR (proc)) |
0f2d19dd JB |
2002 | { |
2003 | t.arg1 = SCM_CAR (proc); /* body */ | |
2004 | SIDEVAL (t.arg1, env); | |
2005 | } | |
f3d2630a MD |
2006 | for (t.arg1 = SCM_EOL, proc = SCM_CDDR (x); |
2007 | SCM_NIMP (proc); | |
2008 | proc = SCM_CDR (proc)) | |
0f2d19dd | 2009 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ |
e2806c10 | 2010 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
2011 | } |
2012 | x = SCM_CDR (proc); | |
2013 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
2014 | RETURN (SCM_UNSPECIFIED); |
2015 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
2016 | goto begin; |
2017 | ||
2018 | ||
c209c88e | 2019 | case SCM_BIT8(SCM_IM_IF): |
0f2d19dd JB |
2020 | x = SCM_CDR (x); |
2021 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
2022 | x = SCM_CDR (x); | |
2023 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
2024 | { | |
2025 | RETURN (SCM_UNSPECIFIED); | |
2026 | } | |
6dbd0af5 | 2027 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2028 | goto carloop; |
2029 | ||
2030 | ||
c209c88e | 2031 | case SCM_BIT8(SCM_IM_LET): |
0f2d19dd JB |
2032 | x = SCM_CDR (x); |
2033 | proc = SCM_CAR (SCM_CDR (x)); | |
2034 | t.arg1 = SCM_EOL; | |
2035 | do | |
2036 | { | |
2037 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2038 | } | |
2039 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 2040 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 2041 | x = SCM_CDR (x); |
6dbd0af5 | 2042 | goto cdrxnoap; |
0f2d19dd JB |
2043 | |
2044 | ||
c209c88e | 2045 | case SCM_BIT8(SCM_IM_LETREC): |
0f2d19dd | 2046 | x = SCM_CDR (x); |
e2806c10 | 2047 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
2048 | x = SCM_CDR (x); |
2049 | proc = SCM_CAR (x); | |
2050 | t.arg1 = SCM_EOL; | |
2051 | do | |
2052 | { | |
2053 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2054 | } | |
2055 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 2056 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 2057 | goto cdrxnoap; |
0f2d19dd JB |
2058 | |
2059 | ||
c209c88e | 2060 | case SCM_BIT8(SCM_IM_LETSTAR): |
0f2d19dd JB |
2061 | x = SCM_CDR (x); |
2062 | proc = SCM_CAR (x); | |
2063 | if (SCM_IMP (proc)) | |
2064 | { | |
e2806c10 | 2065 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 2066 | goto cdrxnoap; |
0f2d19dd JB |
2067 | } |
2068 | do | |
2069 | { | |
2070 | t.arg1 = SCM_CAR (proc); | |
2071 | proc = SCM_CDR (proc); | |
e2806c10 | 2072 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
2073 | } |
2074 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 2075 | goto cdrxnoap; |
0f2d19dd | 2076 | |
c209c88e | 2077 | case SCM_BIT8(SCM_IM_OR): |
0f2d19dd JB |
2078 | x = SCM_CDR (x); |
2079 | t.arg1 = x; | |
2080 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
2081 | { | |
2082 | x = EVALCAR (x, env); | |
2083 | if (SCM_NFALSEP (x)) | |
2084 | { | |
2085 | RETURN (x); | |
2086 | } | |
2087 | x = t.arg1; | |
2088 | } | |
6dbd0af5 | 2089 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2090 | goto carloop; |
2091 | ||
2092 | ||
c209c88e | 2093 | case SCM_BIT8(SCM_IM_LAMBDA): |
0f2d19dd JB |
2094 | RETURN (scm_closure (SCM_CDR (x), env)); |
2095 | ||
2096 | ||
c209c88e | 2097 | case SCM_BIT8(SCM_IM_QUOTE): |
0f2d19dd JB |
2098 | RETURN (SCM_CAR (SCM_CDR (x))); |
2099 | ||
2100 | ||
c209c88e | 2101 | case SCM_BIT8(SCM_IM_SET_X): |
0f2d19dd JB |
2102 | x = SCM_CDR (x); |
2103 | proc = SCM_CAR (x); | |
3201d763 | 2104 | switch (SCM_ITAG3 (proc)) |
0f2d19dd | 2105 | { |
3201d763 | 2106 | case scm_tc3_cons: |
26d5b9b4 | 2107 | t.lloc = scm_lookupcar (x, env, 1); |
0f2d19dd | 2108 | break; |
3201d763 | 2109 | case scm_tc3_cons_gloc: |
a23afe53 | 2110 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
2111 | break; |
2112 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 2113 | case scm_tc3_imm24: |
0f2d19dd JB |
2114 | t.lloc = scm_ilookup (proc, env); |
2115 | break; | |
2116 | #endif | |
2117 | } | |
2118 | x = SCM_CDR (x); | |
2119 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
2120 | #ifdef SICP |
2121 | RETURN (*t.lloc); | |
2122 | #else | |
2123 | RETURN (SCM_UNSPECIFIED); | |
2124 | #endif | |
2125 | ||
2126 | ||
c209c88e | 2127 | case SCM_BIT8(SCM_IM_DEFINE): /* only for internal defines */ |
26d5b9b4 MD |
2128 | scm_misc_error (NULL, "Bad define placement", SCM_EOL); |
2129 | ||
0f2d19dd | 2130 | /* new syntactic forms go here. */ |
c209c88e | 2131 | case SCM_BIT8(SCM_MAKISYM (0)): |
0f2d19dd JB |
2132 | proc = SCM_CAR (x); |
2133 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
2134 | switch SCM_ISYMNUM (proc) | |
2135 | { | |
0f2d19dd JB |
2136 | case (SCM_ISYMNUM (SCM_IM_APPLY)): |
2137 | proc = SCM_CDR (x); | |
2138 | proc = EVALCAR (proc, env); | |
2139 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
2140 | if (SCM_CLOSUREP (proc)) | |
2141 | { | |
1609038c | 2142 | SCM argl, tl; |
6dbd0af5 | 2143 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
2144 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
2145 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
2146 | #ifdef DEVAL |
2147 | debug.info->a.args = t.arg1; | |
2148 | #endif | |
cf7c17e9 | 2149 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
2150 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
2151 | goto wrongnumargs; | |
2152 | #endif | |
c79450dd | 2153 | ENTER_APPLY; |
1609038c MD |
2154 | /* Copy argument list */ |
2155 | if (SCM_IMP (t.arg1)) | |
2156 | argl = t.arg1; | |
2157 | else | |
2158 | { | |
2159 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
2160 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
2161 | && SCM_CONSP (t.arg1)) | |
2162 | { | |
2163 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
2164 | SCM_UNSPECIFIED)); | |
2165 | tl = SCM_CDR (tl); | |
2166 | } | |
2167 | SCM_SETCDR (tl, t.arg1); | |
2168 | } | |
2169 | ||
2170 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
2171 | x = SCM_CODE (proc); |
2172 | goto cdrxbegin; | |
2173 | } | |
81123e6d | 2174 | proc = scm_f_apply; |
0f2d19dd JB |
2175 | goto evapply; |
2176 | ||
2177 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
5f144b10 GH |
2178 | { |
2179 | int first; | |
2180 | SCM val = scm_make_continuation (&first); | |
2181 | ||
2182 | if (first) | |
2183 | t.arg1 = val; | |
2184 | else | |
2185 | RETURN (val); | |
2186 | } | |
0f2d19dd JB |
2187 | proc = SCM_CDR (x); |
2188 | proc = evalcar (proc, env); | |
2189 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2190 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2191 | ENTER_APPLY; | |
0f2d19dd JB |
2192 | goto evap1; |
2193 | ||
a570e93a MD |
2194 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
2195 | RETURN (scm_makprom (scm_closure (SCM_CDR (x), env))) | |
2196 | ||
89efbff4 | 2197 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
195847fa MD |
2198 | proc = SCM_CADR (x); /* unevaluated operands */ |
2199 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2200 | if (SCM_IMP (proc)) | |
2201 | arg2 = *scm_ilookup (proc, env); | |
2202 | else if (SCM_NCONSP (proc)) | |
2203 | { | |
2204 | if (SCM_NCELLP (proc)) | |
2205 | arg2 = SCM_GLOC_VAL (proc); | |
2206 | else | |
2207 | arg2 = *scm_lookupcar (SCM_CDR (x), env, 1); | |
2208 | } | |
2209 | else | |
2210 | { | |
2211 | arg2 = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2212 | t.lloc = SCM_CDRLOC (arg2); | |
2213 | while (SCM_NIMP (proc = SCM_CDR (proc))) | |
2214 | { | |
2215 | *t.lloc = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2216 | t.lloc = SCM_CDRLOC (*t.lloc); | |
2217 | } | |
2218 | } | |
2219 | ||
2220 | type_dispatch: | |
61364ba6 MD |
2221 | /* The type dispatch code is duplicated here |
2222 | * (c.f. objects.c:scm_mcache_compute_cmethod) since that | |
2223 | * cuts down execution time for type dispatch to 50%. | |
2224 | */ | |
2225 | { | |
2226 | int i, n, end, mask; | |
2227 | SCM z = SCM_CDDR (x); | |
2228 | n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */ | |
2229 | proc = SCM_CADR (z); | |
2230 | ||
2231 | if (SCM_NIMP (proc)) | |
2232 | { | |
2233 | /* Prepare for linear search */ | |
2234 | mask = -1; | |
2235 | i = 0; | |
b5c2579a | 2236 | end = SCM_VECTOR_LENGTH (proc); |
61364ba6 MD |
2237 | } |
2238 | else | |
2239 | { | |
2240 | /* Compute a hash value */ | |
2241 | int hashset = SCM_INUM (proc); | |
2242 | int j = n; | |
2243 | mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z))); | |
2244 | proc = SCM_CADR (z); | |
2245 | i = 0; | |
2246 | t.arg1 = arg2; | |
2247 | if (SCM_NIMP (t.arg1)) | |
2248 | do | |
2249 | { | |
d8c40b9f DH |
2250 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1))) |
2251 | [scm_si_hashsets + hashset]; | |
61364ba6 MD |
2252 | t.arg1 = SCM_CDR (t.arg1); |
2253 | } | |
4ea6a431 | 2254 | while (j-- && SCM_NIMP (t.arg1)); |
61364ba6 MD |
2255 | i &= mask; |
2256 | end = i; | |
2257 | } | |
2258 | ||
2259 | /* Search for match */ | |
2260 | do | |
2261 | { | |
2262 | int j = n; | |
2263 | z = SCM_VELTS (proc)[i]; | |
2264 | t.arg1 = arg2; /* list of arguments */ | |
2265 | if (SCM_NIMP (t.arg1)) | |
2266 | do | |
2267 | { | |
2268 | /* More arguments than specifiers => CLASS != ENV */ | |
cf498326 | 2269 | if (! SCM_EQ_P (scm_class_of (SCM_CAR (t.arg1)), SCM_CAR (z))) |
61364ba6 MD |
2270 | goto next_method; |
2271 | t.arg1 = SCM_CDR (t.arg1); | |
2272 | z = SCM_CDR (z); | |
2273 | } | |
4ea6a431 | 2274 | while (j-- && SCM_NIMP (t.arg1)); |
61364ba6 MD |
2275 | /* Fewer arguments than specifiers => CAR != ENV */ |
2276 | if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))) | |
2277 | goto next_method; | |
2278 | apply_cmethod: | |
2279 | env = EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (z)), | |
2280 | arg2, | |
2281 | SCM_CMETHOD_ENV (z)); | |
2282 | x = SCM_CMETHOD_CODE (z); | |
2283 | goto cdrxbegin; | |
2284 | next_method: | |
2285 | i = (i + 1) & mask; | |
2286 | } while (i != end); | |
2287 | ||
2288 | z = scm_memoize_method (x, arg2); | |
2289 | goto apply_cmethod; | |
2290 | } | |
73b64342 | 2291 | |
ca4be6ea MD |
2292 | case (SCM_ISYMNUM (SCM_IM_SLOT_REF)): |
2293 | x = SCM_CDR (x); | |
2294 | t.arg1 = EVALCAR (x, env); | |
d8c40b9f | 2295 | RETURN (SCM_PACK (SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CADR (x))])) |
ca4be6ea MD |
2296 | |
2297 | case (SCM_ISYMNUM (SCM_IM_SLOT_SET_X)): | |
2298 | x = SCM_CDR (x); | |
2299 | t.arg1 = EVALCAR (x, env); | |
2300 | x = SCM_CDR (x); | |
2301 | proc = SCM_CDR (x); | |
d8c40b9f DH |
2302 | SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CAR (x))] |
2303 | = SCM_UNPACK (EVALCAR (proc, env)); | |
5623a9b4 | 2304 | RETURN (SCM_UNSPECIFIED) |
ca4be6ea | 2305 | |
73b64342 MD |
2306 | case (SCM_ISYMNUM (SCM_IM_NIL_COND)): |
2307 | proc = SCM_CDR (x); | |
2308 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2309 | { | |
2310 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2311 | || SCM_EQ_P (t.arg1, scm_lisp_nil))) |
73b64342 | 2312 | { |
cf498326 | 2313 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2314 | RETURN (t.arg1); |
2315 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2316 | goto carloop; | |
2317 | } | |
2318 | proc = SCM_CDR (x); | |
2319 | } | |
2320 | x = proc; | |
2321 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2322 | goto carloop; | |
2323 | ||
2324 | case (SCM_ISYMNUM (SCM_IM_NIL_IFY)): | |
2325 | x = SCM_CDR (x); | |
2326 | RETURN ((SCM_FALSEP (proc = EVALCAR (x, env)) || SCM_NULLP (proc)) | |
43a912cf | 2327 | ? scm_lisp_nil |
73b64342 MD |
2328 | : proc) |
2329 | ||
2330 | case (SCM_ISYMNUM (SCM_IM_T_IFY)): | |
2331 | x = SCM_CDR (x); | |
43a912cf | 2332 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) ? scm_lisp_t : scm_lisp_nil) |
73b64342 MD |
2333 | |
2334 | case (SCM_ISYMNUM (SCM_IM_0_COND)): | |
2335 | proc = SCM_CDR (x); | |
2336 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2337 | { | |
2338 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2339 | || SCM_EQ_P (t.arg1, SCM_INUM0))) |
73b64342 | 2340 | { |
cf498326 | 2341 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2342 | RETURN (t.arg1); |
2343 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2344 | goto carloop; | |
2345 | } | |
2346 | proc = SCM_CDR (x); | |
2347 | } | |
2348 | x = proc; | |
2349 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2350 | goto carloop; | |
2351 | ||
2352 | case (SCM_ISYMNUM (SCM_IM_0_IFY)): | |
2353 | x = SCM_CDR (x); | |
2354 | RETURN (SCM_FALSEP (proc = EVALCAR (x, env)) | |
2355 | ? SCM_INUM0 | |
2356 | : proc) | |
2357 | ||
2358 | case (SCM_ISYMNUM (SCM_IM_1_IFY)): | |
2359 | x = SCM_CDR (x); | |
2360 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) | |
2361 | ? SCM_MAKINUM (1) | |
2362 | : SCM_INUM0) | |
2363 | ||
2364 | case (SCM_ISYMNUM (SCM_IM_BIND)): | |
2365 | x = SCM_CDR (x); | |
2366 | ||
2367 | t.arg1 = SCM_CAR (x); | |
2368 | arg2 = SCM_CDAR (env); | |
2369 | while (SCM_NIMP (arg2)) | |
2370 | { | |
2371 | proc = SCM_GLOC_VAL (SCM_CAR (t.arg1)); | |
a963f787 MD |
2372 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2373 | SCM_CAR (arg2)); | |
73b64342 MD |
2374 | SCM_SETCAR (arg2, proc); |
2375 | t.arg1 = SCM_CDR (t.arg1); | |
2376 | arg2 = SCM_CDR (arg2); | |
2377 | } | |
2378 | t.arg1 = SCM_CAR (x); | |
2379 | scm_dynwinds = scm_acons (t.arg1, SCM_CDAR (env), scm_dynwinds); | |
89efbff4 | 2380 | |
73b64342 MD |
2381 | arg2 = x = SCM_CDR (x); |
2382 | while (SCM_NNULLP (arg2 = SCM_CDR (arg2))) | |
2383 | { | |
2384 | SIDEVAL (SCM_CAR (x), env); | |
2385 | x = arg2; | |
2386 | } | |
2387 | proc = EVALCAR (x, env); | |
2388 | ||
2389 | scm_dynwinds = SCM_CDR (scm_dynwinds); | |
2390 | arg2 = SCM_CDAR (env); | |
2391 | while (SCM_NIMP (arg2)) | |
2392 | { | |
a963f787 MD |
2393 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2394 | SCM_CAR (arg2)); | |
73b64342 MD |
2395 | t.arg1 = SCM_CDR (t.arg1); |
2396 | arg2 = SCM_CDR (arg2); | |
2397 | } | |
2398 | ||
2399 | RETURN (proc) | |
2400 | ||
0f2d19dd JB |
2401 | default: |
2402 | goto badfun; | |
2403 | } | |
2404 | ||
2405 | default: | |
2406 | proc = x; | |
2407 | badfun: | |
f5bf2977 | 2408 | /* scm_everr (x, env,...) */ |
523f5266 | 2409 | scm_misc_error (NULL, |
70d63753 | 2410 | "Wrong type to apply: ~S", |
523f5266 | 2411 | scm_listify (proc, SCM_UNDEFINED)); |
0f2d19dd JB |
2412 | case scm_tc7_vector: |
2413 | case scm_tc7_wvect: | |
afe5177e | 2414 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
2415 | case scm_tc7_bvect: |
2416 | case scm_tc7_byvect: | |
2417 | case scm_tc7_svect: | |
2418 | case scm_tc7_ivect: | |
2419 | case scm_tc7_uvect: | |
2420 | case scm_tc7_fvect: | |
2421 | case scm_tc7_dvect: | |
2422 | case scm_tc7_cvect: | |
5c11cc9d | 2423 | #ifdef HAVE_LONG_LONGS |
0f2d19dd | 2424 | case scm_tc7_llvect: |
afe5177e | 2425 | #endif |
0f2d19dd JB |
2426 | #endif |
2427 | case scm_tc7_string: | |
0f2d19dd | 2428 | case scm_tc7_substring: |
0f2d19dd JB |
2429 | case scm_tc7_smob: |
2430 | case scm_tcs_closures: | |
224822be | 2431 | case scm_tc7_cclo: |
89efbff4 | 2432 | case scm_tc7_pws: |
0f2d19dd JB |
2433 | case scm_tcs_subrs: |
2434 | RETURN (x); | |
2435 | ||
2436 | #ifdef MEMOIZE_LOCALS | |
c209c88e | 2437 | case SCM_BIT8(SCM_ILOC00): |
0f2d19dd JB |
2438 | proc = *scm_ilookup (SCM_CAR (x), env); |
2439 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2440 | #ifndef SCM_RECKLESS |
2441 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2442 | goto checkargs; |
2443 | #endif | |
2444 | #endif | |
2445 | break; | |
2446 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2447 | ||
2448 | ||
3201d763 DH |
2449 | case scm_tcs_cons_gloc: { |
2450 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; | |
2451 | if (vcell == 0) { | |
aa00bd1e MD |
2452 | /* This is a struct implanted in the code, not a gloc. */ |
2453 | RETURN (x); | |
3201d763 DH |
2454 | } else { |
2455 | proc = SCM_PACK (vcell); | |
2456 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2457 | #ifndef SCM_RECKLESS |
2458 | #ifdef SCM_CAUTIOUS | |
3201d763 | 2459 | goto checkargs; |
0f2d19dd JB |
2460 | #endif |
2461 | #endif | |
3201d763 | 2462 | } |
0f2d19dd | 2463 | break; |
3201d763 | 2464 | } |
0f2d19dd JB |
2465 | |
2466 | case scm_tcs_cons_nimcar: | |
2467 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2468 | { | |
f8769b1d | 2469 | #ifdef USE_THREADS |
26d5b9b4 | 2470 | t.lloc = scm_lookupcar1 (x, env, 1); |
f8769b1d MV |
2471 | if (t.lloc == NULL) |
2472 | { | |
2473 | /* we have lost the race, start again. */ | |
2474 | goto dispatch; | |
2475 | } | |
2476 | proc = *t.lloc; | |
2477 | #else | |
26d5b9b4 | 2478 | proc = *scm_lookupcar (x, env, 1); |
f8769b1d MV |
2479 | #endif |
2480 | ||
0f2d19dd JB |
2481 | if (SCM_IMP (proc)) |
2482 | { | |
2483 | unmemocar (x, env); | |
2484 | goto badfun; | |
2485 | } | |
2486 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2487 | { | |
2488 | unmemocar (x, env); | |
2489 | ||
2490 | handle_a_macro: | |
368bf056 | 2491 | #ifdef DEVAL |
7c354052 MD |
2492 | /* Set a flag during macro expansion so that macro |
2493 | application frames can be deleted from the backtrace. */ | |
2494 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2495 | #endif |
f8769b1d MV |
2496 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2497 | scm_cons (env, scm_listofnull)); | |
2498 | ||
7c354052 MD |
2499 | #ifdef DEVAL |
2500 | SCM_CLEAR_MACROEXP (debug); | |
2501 | #endif | |
445f675c | 2502 | switch (SCM_CELL_WORD_0 (proc) >> 16) |
0f2d19dd JB |
2503 | { |
2504 | case 2: | |
2505 | if (scm_ilength (t.arg1) <= 0) | |
2506 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2507 | #ifdef DEVAL |
2508 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2509 | { | |
6dbd0af5 | 2510 | SCM_DEFER_INTS; |
a23afe53 MD |
2511 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2512 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2513 | SCM_ALLOW_INTS; |
2514 | goto dispatch; | |
2515 | } | |
2516 | /* Prevent memoizing of debug info expression. */ | |
6203706f MD |
2517 | debug.info->e.exp = scm_cons_source (debug.info->e.exp, |
2518 | SCM_CAR (x), | |
2519 | SCM_CDR (x)); | |
6dbd0af5 | 2520 | #endif |
0f2d19dd | 2521 | SCM_DEFER_INTS; |
a23afe53 MD |
2522 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2523 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2524 | SCM_ALLOW_INTS; |
6dbd0af5 | 2525 | goto loopnoap; |
0f2d19dd JB |
2526 | case 1: |
2527 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2528 | goto loopnoap; |
0f2d19dd JB |
2529 | case 0: |
2530 | RETURN (t.arg1); | |
2531 | } | |
2532 | } | |
2533 | } | |
2534 | else | |
2535 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2536 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2537 | #ifndef SCM_RECKLESS |
2538 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2539 | checkargs: |
2540 | #endif | |
2541 | if (SCM_CLOSUREP (proc)) | |
2542 | { | |
2543 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2544 | t.arg1 = SCM_CDR (x); | |
2545 | while (SCM_NIMP (arg2)) | |
2546 | { | |
2547 | if (SCM_NCONSP (arg2)) | |
2548 | goto evapply; | |
2549 | if (SCM_IMP (t.arg1)) | |
2550 | goto umwrongnumargs; | |
2551 | arg2 = SCM_CDR (arg2); | |
2552 | t.arg1 = SCM_CDR (t.arg1); | |
2553 | } | |
2554 | if (SCM_NNULLP (t.arg1)) | |
2555 | goto umwrongnumargs; | |
2556 | } | |
2557 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2558 | goto handle_a_macro; | |
2559 | #endif | |
2560 | } | |
2561 | ||
2562 | ||
6dbd0af5 MD |
2563 | evapply: |
2564 | PREP_APPLY (proc, SCM_EOL); | |
2565 | if (SCM_NULLP (SCM_CDR (x))) { | |
2566 | ENTER_APPLY; | |
89efbff4 | 2567 | evap0: |
0f2d19dd JB |
2568 | switch (SCM_TYP7 (proc)) |
2569 | { /* no arguments given */ | |
2570 | case scm_tc7_subr_0: | |
2571 | RETURN (SCM_SUBRF (proc) ()); | |
2572 | case scm_tc7_subr_1o: | |
2573 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2574 | case scm_tc7_lsubr: | |
2575 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2576 | case scm_tc7_rpsubr: | |
2577 | RETURN (SCM_BOOL_T); | |
2578 | case scm_tc7_asubr: | |
2579 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
0717dfd8 | 2580 | case scm_tc7_smob: |
68b06924 | 2581 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 2582 | goto badfun; |
68b06924 | 2583 | RETURN (SCM_SMOB_APPLY_0 (proc)); |
0f2d19dd JB |
2584 | case scm_tc7_cclo: |
2585 | t.arg1 = proc; | |
2586 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2587 | #ifdef DEVAL |
2588 | debug.info->a.proc = proc; | |
2589 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2590 | #endif | |
0f2d19dd | 2591 | goto evap1; |
89efbff4 MD |
2592 | case scm_tc7_pws: |
2593 | proc = SCM_PROCEDURE (proc); | |
2594 | #ifdef DEVAL | |
2595 | debug.info->a.proc = proc; | |
2596 | #endif | |
002f1a5d MD |
2597 | if (!SCM_CLOSUREP (proc)) |
2598 | goto evap0; | |
2599 | if (scm_badformalsp (proc, 0)) | |
2600 | goto umwrongnumargs; | |
0f2d19dd JB |
2601 | case scm_tcs_closures: |
2602 | x = SCM_CODE (proc); | |
e2806c10 | 2603 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2604 | goto cdrxbegin; |
da7f71d7 | 2605 | case scm_tcs_cons_gloc: |
195847fa MD |
2606 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2607 | { | |
2608 | x = SCM_ENTITY_PROCEDURE (proc); | |
2609 | arg2 = SCM_EOL; | |
2610 | goto type_dispatch; | |
2611 | } | |
2612 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2613 | goto badfun; |
2614 | else | |
da7f71d7 | 2615 | { |
195847fa MD |
2616 | t.arg1 = proc; |
2617 | proc = (SCM_I_ENTITYP (proc) | |
2618 | ? SCM_ENTITY_PROCEDURE (proc) | |
2619 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 | 2620 | #ifdef DEVAL |
195847fa MD |
2621 | debug.info->a.proc = proc; |
2622 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
da7f71d7 | 2623 | #endif |
195847fa MD |
2624 | if (SCM_NIMP (proc)) |
2625 | goto evap1; | |
2626 | else | |
2627 | goto badfun; | |
da7f71d7 | 2628 | } |
0f2d19dd JB |
2629 | case scm_tc7_subr_1: |
2630 | case scm_tc7_subr_2: | |
2631 | case scm_tc7_subr_2o: | |
2632 | case scm_tc7_cxr: | |
2633 | case scm_tc7_subr_3: | |
2634 | case scm_tc7_lsubr_2: | |
2635 | umwrongnumargs: | |
2636 | unmemocar (x, env); | |
2637 | wrongnumargs: | |
f5bf2977 GH |
2638 | /* scm_everr (x, env,...) */ |
2639 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2640 | default: |
2641 | /* handle macros here */ | |
2642 | goto badfun; | |
2643 | } | |
6dbd0af5 | 2644 | } |
0f2d19dd JB |
2645 | |
2646 | /* must handle macros by here */ | |
2647 | x = SCM_CDR (x); | |
cf7c17e9 | 2648 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2649 | if (SCM_IMP (x)) |
2650 | goto wrongnumargs; | |
680ed4a8 MD |
2651 | else if (SCM_CONSP (x)) |
2652 | { | |
2653 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2654 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2655 | else |
2656 | t.arg1 = EVALCELLCAR (x, env); | |
2657 | } | |
3201d763 | 2658 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2659 | { |
3201d763 DH |
2660 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2661 | if (vcell == 0) | |
680ed4a8 | 2662 | t.arg1 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2663 | else |
2664 | t.arg1 = SCM_PACK (vcell); | |
680ed4a8 MD |
2665 | } |
2666 | else | |
2667 | goto wrongnumargs; | |
2668 | #else | |
0f2d19dd | 2669 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2670 | #endif |
6dbd0af5 MD |
2671 | #ifdef DEVAL |
2672 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2673 | #endif | |
0f2d19dd JB |
2674 | x = SCM_CDR (x); |
2675 | if (SCM_NULLP (x)) | |
2676 | { | |
6dbd0af5 | 2677 | ENTER_APPLY; |
0f2d19dd JB |
2678 | evap1: |
2679 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2680 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2681 | case scm_tc7_subr_2o: |
2682 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2683 | case scm_tc7_subr_1: | |
2684 | case scm_tc7_subr_1o: | |
2685 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2686 | case scm_tc7_cxr: | |
0f2d19dd JB |
2687 | if (SCM_SUBRF (proc)) |
2688 | { | |
2689 | if (SCM_INUMP (t.arg1)) | |
2690 | { | |
f8de44c1 | 2691 | RETURN (scm_make_real (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)))); |
0f2d19dd JB |
2692 | } |
2693 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2694 | if (SCM_REALP (t.arg1)) | |
2695 | { | |
eb42e2f0 | 2696 | RETURN (scm_make_real (SCM_DSUBRF (proc) (SCM_REAL_VALUE (t.arg1)))); |
0f2d19dd JB |
2697 | } |
2698 | #ifdef SCM_BIGDIG | |
2699 | if (SCM_BIGP (t.arg1)) | |
2700 | { | |
f8de44c1 | 2701 | RETURN (scm_make_real (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)))); |
0f2d19dd JB |
2702 | } |
2703 | #endif | |
2704 | floerr: | |
9de33deb | 2705 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), t.arg1, |
3db4adfc | 2706 | SCM_ARG1, SCM_SYMBOL_CHARS (SCM_SNAME (proc))); |
0f2d19dd | 2707 | } |
3201d763 | 2708 | proc = SCM_SNAME (proc); |
0f2d19dd | 2709 | { |
b5c2579a | 2710 | char *chrs = SCM_SYMBOL_CHARS (proc) + SCM_SYMBOL_LENGTH (proc) - 1; |
0f2d19dd JB |
2711 | while ('c' != *--chrs) |
2712 | { | |
0c95b57d | 2713 | SCM_ASSERT (SCM_CONSP (t.arg1), |
3db4adfc | 2714 | t.arg1, SCM_ARG1, SCM_SYMBOL_CHARS (proc)); |
0f2d19dd JB |
2715 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); |
2716 | } | |
2717 | RETURN (t.arg1); | |
2718 | } | |
2719 | case scm_tc7_rpsubr: | |
2720 | RETURN (SCM_BOOL_T); | |
2721 | case scm_tc7_asubr: | |
2722 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2723 | case scm_tc7_lsubr: | |
2724 | #ifdef DEVAL | |
6dbd0af5 | 2725 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2726 | #else |
2727 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2728 | #endif | |
0717dfd8 | 2729 | case scm_tc7_smob: |
68b06924 | 2730 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 2731 | goto badfun; |
68b06924 | 2732 | RETURN (SCM_SMOB_APPLY_1 (proc, t.arg1)); |
0f2d19dd JB |
2733 | case scm_tc7_cclo: |
2734 | arg2 = t.arg1; | |
2735 | t.arg1 = proc; | |
2736 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2737 | #ifdef DEVAL |
2738 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2739 | debug.info->a.proc = proc; | |
2740 | #endif | |
0f2d19dd | 2741 | goto evap2; |
89efbff4 MD |
2742 | case scm_tc7_pws: |
2743 | proc = SCM_PROCEDURE (proc); | |
2744 | #ifdef DEVAL | |
2745 | debug.info->a.proc = proc; | |
2746 | #endif | |
002f1a5d MD |
2747 | if (!SCM_CLOSUREP (proc)) |
2748 | goto evap1; | |
2749 | if (scm_badformalsp (proc, 1)) | |
2750 | goto umwrongnumargs; | |
0f2d19dd | 2751 | case scm_tcs_closures: |
195847fa | 2752 | /* clos1: */ |
0f2d19dd JB |
2753 | x = SCM_CODE (proc); |
2754 | #ifdef DEVAL | |
e2806c10 | 2755 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2756 | #else |
e2806c10 | 2757 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2758 | #endif |
2759 | goto cdrxbegin; | |
0c32d76c | 2760 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2761 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2762 | { | |
195847fa | 2763 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2764 | #ifdef DEVAL |
2765 | arg2 = debug.info->a.args; | |
2766 | #else | |
2767 | arg2 = scm_cons (t.arg1, SCM_EOL); | |
2768 | #endif | |
f3d2630a MD |
2769 | goto type_dispatch; |
2770 | } | |
2771 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2772 | goto badfun; |
2773 | else | |
0c32d76c | 2774 | { |
195847fa MD |
2775 | arg2 = t.arg1; |
2776 | t.arg1 = proc; | |
2777 | proc = (SCM_I_ENTITYP (proc) | |
2778 | ? SCM_ENTITY_PROCEDURE (proc) | |
2779 | : SCM_OPERATOR_PROCEDURE (proc)); | |
0c32d76c | 2780 | #ifdef DEVAL |
195847fa MD |
2781 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); |
2782 | debug.info->a.proc = proc; | |
0c32d76c | 2783 | #endif |
195847fa MD |
2784 | if (SCM_NIMP (proc)) |
2785 | goto evap2; | |
2786 | else | |
2787 | goto badfun; | |
0c32d76c | 2788 | } |
0f2d19dd JB |
2789 | case scm_tc7_subr_2: |
2790 | case scm_tc7_subr_0: | |
2791 | case scm_tc7_subr_3: | |
2792 | case scm_tc7_lsubr_2: | |
2793 | goto wrongnumargs; | |
2794 | default: | |
2795 | goto badfun; | |
2796 | } | |
2797 | } | |
cf7c17e9 | 2798 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2799 | if (SCM_IMP (x)) |
2800 | goto wrongnumargs; | |
680ed4a8 MD |
2801 | else if (SCM_CONSP (x)) |
2802 | { | |
2803 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2804 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2805 | else |
2806 | arg2 = EVALCELLCAR (x, env); | |
2807 | } | |
3201d763 | 2808 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2809 | { |
3201d763 DH |
2810 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2811 | if (vcell == 0) | |
680ed4a8 | 2812 | arg2 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2813 | else |
2814 | arg2 = SCM_PACK (vcell); | |
680ed4a8 MD |
2815 | } |
2816 | else | |
2817 | goto wrongnumargs; | |
2818 | #else | |
2819 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2820 | #endif |
2821 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2822 | #ifdef DEVAL |
2823 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2824 | #endif | |
0f2d19dd JB |
2825 | x = SCM_CDR (x); |
2826 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2827 | ENTER_APPLY; |
0f2d19dd | 2828 | evap2: |
6dbd0af5 MD |
2829 | switch (SCM_TYP7 (proc)) |
2830 | { /* have two arguments */ | |
2831 | case scm_tc7_subr_2: | |
2832 | case scm_tc7_subr_2o: | |
2833 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2834 | case scm_tc7_lsubr: | |
0f2d19dd | 2835 | #ifdef DEVAL |
6dbd0af5 MD |
2836 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2837 | #else | |
2838 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2839 | #endif |
6dbd0af5 MD |
2840 | case scm_tc7_lsubr_2: |
2841 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2842 | case scm_tc7_rpsubr: | |
2843 | case scm_tc7_asubr: | |
2844 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
0717dfd8 | 2845 | case scm_tc7_smob: |
68b06924 | 2846 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 2847 | goto badfun; |
68b06924 | 2848 | RETURN (SCM_SMOB_APPLY_2 (proc, t.arg1, arg2)); |
6dbd0af5 MD |
2849 | cclon: |
2850 | case scm_tc7_cclo: | |
0f2d19dd | 2851 | #ifdef DEVAL |
195847fa MD |
2852 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2853 | scm_cons (proc, debug.info->a.args), | |
2854 | SCM_EOL)); | |
0f2d19dd | 2855 | #else |
195847fa MD |
2856 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2857 | scm_cons2 (proc, t.arg1, | |
2858 | scm_cons (arg2, | |
2859 | scm_eval_args (x, | |
2860 | env, | |
2861 | proc))), | |
2862 | SCM_EOL)); | |
6dbd0af5 | 2863 | #endif |
0c32d76c | 2864 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2865 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2866 | { | |
195847fa | 2867 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2868 | #ifdef DEVAL |
2869 | arg2 = debug.info->a.args; | |
2870 | #else | |
2871 | arg2 = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2872 | #endif | |
f3d2630a MD |
2873 | goto type_dispatch; |
2874 | } | |
2875 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2876 | goto badfun; |
2877 | else | |
0c32d76c | 2878 | { |
195847fa | 2879 | operatorn: |
0c32d76c | 2880 | #ifdef DEVAL |
195847fa MD |
2881 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) |
2882 | ? SCM_ENTITY_PROCEDURE (proc) | |
2883 | : SCM_OPERATOR_PROCEDURE (proc), | |
2884 | scm_cons (proc, debug.info->a.args), | |
2885 | SCM_EOL)); | |
2886 | #else | |
2887 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) | |
2888 | ? SCM_ENTITY_PROCEDURE (proc) | |
2889 | : SCM_OPERATOR_PROCEDURE (proc), | |
2890 | scm_cons2 (proc, t.arg1, | |
2891 | scm_cons (arg2, | |
2892 | scm_eval_args (x, | |
2893 | env, | |
2894 | proc))), | |
2895 | SCM_EOL)); | |
2896 | #endif | |
0c32d76c | 2897 | } |
6dbd0af5 MD |
2898 | case scm_tc7_subr_0: |
2899 | case scm_tc7_cxr: | |
2900 | case scm_tc7_subr_1o: | |
2901 | case scm_tc7_subr_1: | |
2902 | case scm_tc7_subr_3: | |
6dbd0af5 MD |
2903 | goto wrongnumargs; |
2904 | default: | |
2905 | goto badfun; | |
002f1a5d MD |
2906 | case scm_tc7_pws: |
2907 | proc = SCM_PROCEDURE (proc); | |
2908 | #ifdef DEVAL | |
2909 | debug.info->a.proc = proc; | |
2910 | #endif | |
2911 | if (!SCM_CLOSUREP (proc)) | |
2912 | goto evap2; | |
2913 | if (scm_badformalsp (proc, 2)) | |
2914 | goto umwrongnumargs; | |
6dbd0af5 | 2915 | case scm_tcs_closures: |
195847fa | 2916 | /* clos2: */ |
0f2d19dd | 2917 | #ifdef DEVAL |
da7f71d7 MD |
2918 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2919 | debug.info->a.args, | |
2920 | SCM_ENV (proc)); | |
0f2d19dd | 2921 | #else |
da7f71d7 MD |
2922 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2923 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2924 | #endif |
6dbd0af5 MD |
2925 | x = SCM_CODE (proc); |
2926 | goto cdrxbegin; | |
2927 | } | |
0f2d19dd | 2928 | } |
cf7c17e9 | 2929 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2930 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2931 | goto wrongnumargs; | |
2932 | #endif | |
0f2d19dd | 2933 | #ifdef DEVAL |
6dbd0af5 | 2934 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2935 | scm_deval_args (x, env, proc, |
2936 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2937 | #endif |
6dbd0af5 | 2938 | ENTER_APPLY; |
89efbff4 | 2939 | evap3: |
6dbd0af5 MD |
2940 | switch (SCM_TYP7 (proc)) |
2941 | { /* have 3 or more arguments */ | |
0f2d19dd | 2942 | #ifdef DEVAL |
6dbd0af5 MD |
2943 | case scm_tc7_subr_3: |
2944 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2945 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2946 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 2947 | case scm_tc7_asubr: |
399dedcc MD |
2948 | #ifdef BUILTIN_RPASUBR |
2949 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2950 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2951 | do |
2952 | { | |
2953 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
2954 | arg2 = SCM_CDR (arg2); | |
2955 | } | |
2956 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
2957 | RETURN (t.arg1) |
2958 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2959 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2960 | #ifdef BUILTIN_RPASUBR |
2961 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2962 | RETURN (SCM_BOOL_F) | |
2963 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2964 | do |
2965 | { | |
2966 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
2967 | RETURN (SCM_BOOL_F) | |
2968 | arg2 = SCM_CAR (t.arg1); | |
2969 | t.arg1 = SCM_CDR (t.arg1); | |
2970 | } | |
2971 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
2972 | RETURN (SCM_BOOL_T) |
2973 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
2974 | RETURN (SCM_APPLY (proc, t.arg1, |
2975 | scm_acons (arg2, | |
2976 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
2977 | SCM_EOL))) | |
71d3aa6d | 2978 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 2979 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
2980 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2981 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
2982 | case scm_tc7_lsubr: |
2983 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0717dfd8 | 2984 | case scm_tc7_smob: |
68b06924 | 2985 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 2986 | goto badfun; |
68b06924 KN |
2987 | RETURN (SCM_SMOB_APPLY_3 (proc, t.arg1, arg2, |
2988 | SCM_CDDR (debug.info->a.args))); | |
6dbd0af5 MD |
2989 | case scm_tc7_cclo: |
2990 | goto cclon; | |
89efbff4 MD |
2991 | case scm_tc7_pws: |
2992 | proc = SCM_PROCEDURE (proc); | |
2993 | debug.info->a.proc = proc; | |
002f1a5d MD |
2994 | if (!SCM_CLOSUREP (proc)) |
2995 | goto evap3; | |
2996 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), debug.info->a.args)) | |
2997 | goto umwrongnumargs; | |
6dbd0af5 | 2998 | case scm_tcs_closures: |
b7ff98dd | 2999 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 3000 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
3001 | debug.info->a.args, |
3002 | SCM_ENV (proc)); | |
3003 | x = SCM_CODE (proc); | |
3004 | goto cdrxbegin; | |
3005 | #else /* DEVAL */ | |
3006 | case scm_tc7_subr_3: | |
3007 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
3008 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
3009 | case scm_tc7_asubr: | |
399dedcc | 3010 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
3011 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
3012 | do | |
3013 | { | |
3014 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
3015 | x = SCM_CDR(x); | |
3016 | } | |
3017 | while (SCM_NIMP (x)); | |
399dedcc MD |
3018 | RETURN (t.arg1) |
3019 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3020 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3021 | #ifdef BUILTIN_RPASUBR |
3022 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3023 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
3024 | do |
3025 | { | |
3026 | t.arg1 = EVALCAR (x, env); | |
3027 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
3028 | RETURN (SCM_BOOL_F) | |
3029 | arg2 = t.arg1; | |
3030 | x = SCM_CDR (x); | |
3031 | } | |
3032 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
3033 | RETURN (SCM_BOOL_T) |
3034 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 3035 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
3036 | scm_acons (arg2, |
3037 | scm_eval_args (x, env, proc), | |
3038 | SCM_EOL))); | |
71d3aa6d | 3039 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 3040 | case scm_tc7_lsubr_2: |
680ed4a8 | 3041 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 3042 | case scm_tc7_lsubr: |
680ed4a8 MD |
3043 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
3044 | arg2, | |
3045 | scm_eval_args (x, env, proc)))); | |
0717dfd8 | 3046 | case scm_tc7_smob: |
68b06924 | 3047 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 3048 | goto badfun; |
68b06924 KN |
3049 | RETURN (SCM_SMOB_APPLY_3 (proc, t.arg1, arg2, |
3050 | scm_eval_args (x, env, proc))); | |
6dbd0af5 MD |
3051 | case scm_tc7_cclo: |
3052 | goto cclon; | |
89efbff4 MD |
3053 | case scm_tc7_pws: |
3054 | proc = SCM_PROCEDURE (proc); | |
002f1a5d MD |
3055 | if (!SCM_CLOSUREP (proc)) |
3056 | goto evap3; | |
3057 | { | |
3058 | SCM formals = SCM_CAR (SCM_CODE (proc)); | |
3059 | if (SCM_NULLP (formals) | |
3060 | || (SCM_CONSP (formals) | |
3061 | && (SCM_NULLP (SCM_CDR (formals)) | |
3062 | || (SCM_CONSP (SCM_CDR (formals)) | |
3063 | && scm_badargsp (SCM_CDDR (formals), x))))) | |
3064 | goto umwrongnumargs; | |
3065 | } | |
6dbd0af5 MD |
3066 | case scm_tcs_closures: |
3067 | #ifdef DEVAL | |
b7ff98dd | 3068 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 3069 | #endif |
e2806c10 | 3070 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
3071 | scm_cons2 (t.arg1, |
3072 | arg2, | |
3073 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
3074 | SCM_ENV (proc)); |
3075 | x = SCM_CODE (proc); | |
3076 | goto cdrxbegin; | |
0f2d19dd | 3077 | #endif /* DEVAL */ |
0c32d76c | 3078 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3079 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3080 | { | |
3081 | #ifdef DEVAL | |
3082 | arg2 = debug.info->a.args; | |
3083 | #else | |
3084 | arg2 = scm_cons2 (t.arg1, arg2, scm_eval_args (x, env, proc)); | |
3085 | #endif | |
195847fa | 3086 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
3087 | goto type_dispatch; |
3088 | } | |
3089 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3090 | goto badfun; |
3091 | else | |
195847fa | 3092 | goto operatorn; |
6dbd0af5 MD |
3093 | case scm_tc7_subr_2: |
3094 | case scm_tc7_subr_1o: | |
3095 | case scm_tc7_subr_2o: | |
3096 | case scm_tc7_subr_0: | |
3097 | case scm_tc7_cxr: | |
3098 | case scm_tc7_subr_1: | |
6dbd0af5 MD |
3099 | goto wrongnumargs; |
3100 | default: | |
3101 | goto badfun; | |
3102 | } | |
0f2d19dd JB |
3103 | } |
3104 | #ifdef DEVAL | |
6dbd0af5 | 3105 | exit: |
b6d75948 | 3106 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3107 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3108 | { |
b7ff98dd MD |
3109 | SCM_CLEAR_TRACED_FRAME (debug); |
3110 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3111 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3112 | else |
3113 | { | |
5f144b10 GH |
3114 | int first; |
3115 | SCM val = scm_make_continuation (&first); | |
3116 | ||
3117 | if (first) | |
3118 | t.arg1 = val; | |
3119 | else | |
6dbd0af5 | 3120 | { |
5f144b10 | 3121 | proc = val; |
6dbd0af5 MD |
3122 | goto ret; |
3123 | } | |
3124 | } | |
2f0d1375 | 3125 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3126 | } |
3127 | ret: | |
1646d37b | 3128 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3129 | return proc; |
3130 | #endif | |
3131 | } | |
3132 | ||
6dbd0af5 MD |
3133 | |
3134 | /* SECTION: This code is compiled once. | |
3135 | */ | |
3136 | ||
0f2d19dd JB |
3137 | #ifndef DEVAL |
3138 | ||
82a2622a | 3139 | /* This code processes the arguments to apply: |
b145c172 JB |
3140 | |
3141 | (apply PROC ARG1 ... ARGS) | |
3142 | ||
82a2622a JB |
3143 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
3144 | ... arguments onto the front of ARGS, and returns the resulting | |
3145 | list. Note that ARGS is a list; thus, the argument to this | |
3146 | function is a list whose last element is a list. | |
3147 | ||
3148 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
3149 | result. apply:nconc2last takes care of building the list of |
3150 | arguments, given (ARG1 ... ARGS). | |
3151 | ||
82a2622a JB |
3152 | Rather than do new consing, apply:nconc2last destroys its argument. |
3153 | On that topic, this code came into my care with the following | |
3154 | beautifully cryptic comment on that topic: "This will only screw | |
3155 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
3156 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 3157 | |
3b3b36dd | 3158 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
1bbd0b84 | 3159 | (SCM lst), |
b380b885 | 3160 | "") |
1bbd0b84 | 3161 | #define FUNC_NAME s_scm_nconc2last |
0f2d19dd JB |
3162 | { |
3163 | SCM *lloc; | |
c1bfcf60 | 3164 | SCM_VALIDATE_NONEMPTYLIST (1,lst); |
0f2d19dd JB |
3165 | lloc = &lst; |
3166 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 3167 | lloc = SCM_CDRLOC (*lloc); |
1bbd0b84 | 3168 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
3169 | *lloc = SCM_CAR (*lloc); |
3170 | return lst; | |
3171 | } | |
1bbd0b84 | 3172 | #undef FUNC_NAME |
0f2d19dd JB |
3173 | |
3174 | #endif /* !DEVAL */ | |
3175 | ||
6dbd0af5 MD |
3176 | |
3177 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
3178 | * It is compiled twice. | |
3179 | */ | |
3180 | ||
0f2d19dd | 3181 | #if 0 |
1cc91f1b | 3182 | |
0f2d19dd | 3183 | SCM |
6e8d25a6 | 3184 | scm_apply (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3185 | {} |
3186 | #endif | |
3187 | ||
3188 | #if 0 | |
1cc91f1b | 3189 | |
0f2d19dd | 3190 | SCM |
6e8d25a6 GB |
3191 | scm_dapply (SCM proc, SCM arg1, SCM args) |
3192 | { /* empty */ } | |
0f2d19dd JB |
3193 | #endif |
3194 | ||
1cc91f1b | 3195 | |
82a2622a JB |
3196 | /* Apply a function to a list of arguments. |
3197 | ||
3198 | This function is exported to the Scheme level as taking two | |
3199 | required arguments and a tail argument, as if it were: | |
3200 | (lambda (proc arg1 . args) ...) | |
3201 | Thus, if you just have a list of arguments to pass to a procedure, | |
3202 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
3203 | args, pass the first as ARG1, then cons any remaining fixed args | |
3204 | onto the front of your argument list, and pass that as ARGS. */ | |
3205 | ||
0f2d19dd | 3206 | SCM |
1bbd0b84 | 3207 | SCM_APPLY (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3208 | { |
3209 | #ifdef DEBUG_EXTENSIONS | |
3210 | #ifdef DEVAL | |
6dbd0af5 | 3211 | scm_debug_frame debug; |
c0ab1b8d | 3212 | scm_debug_info debug_vect_body; |
1646d37b | 3213 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 3214 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 3215 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
3216 | debug.vect[0].a.proc = proc; |
3217 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 3218 | scm_last_debug_frame = &debug; |
0f2d19dd | 3219 | #else |
b7ff98dd | 3220 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
3221 | return scm_dapply (proc, arg1, args); |
3222 | #endif | |
3223 | #endif | |
3224 | ||
3225 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
3226 | |
3227 | /* If ARGS is the empty list, then we're calling apply with only two | |
3228 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
3229 | the case, futz with things so that ARG1 is the first argument to | |
3230 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
3231 | rest. |
3232 | ||
3233 | Setting the debug apply frame args this way is pretty messy. | |
3234 | Perhaps we should store arg1 and args directly in the frame as | |
3235 | received, and let scm_frame_arguments unpack them, because that's | |
3236 | a relatively rare operation. This works for now; if the Guile | |
3237 | developer archives are still around, see Mikael's post of | |
3238 | 11-Apr-97. */ | |
0f2d19dd JB |
3239 | if (SCM_NULLP (args)) |
3240 | { | |
3241 | if (SCM_NULLP (arg1)) | |
30000774 JB |
3242 | { |
3243 | arg1 = SCM_UNDEFINED; | |
3244 | #ifdef DEVAL | |
3245 | debug.vect[0].a.args = SCM_EOL; | |
3246 | #endif | |
3247 | } | |
0f2d19dd JB |
3248 | else |
3249 | { | |
30000774 JB |
3250 | #ifdef DEVAL |
3251 | debug.vect[0].a.args = arg1; | |
3252 | #endif | |
0f2d19dd JB |
3253 | args = SCM_CDR (arg1); |
3254 | arg1 = SCM_CAR (arg1); | |
3255 | } | |
3256 | } | |
3257 | else | |
3258 | { | |
0f2d19dd | 3259 | args = scm_nconc2last (args); |
30000774 JB |
3260 | #ifdef DEVAL |
3261 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3262 | #endif | |
0f2d19dd | 3263 | } |
0f2d19dd | 3264 | #ifdef DEVAL |
b6d75948 | 3265 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
3266 | { |
3267 | SCM tmp; | |
b7ff98dd | 3268 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 3269 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3270 | else |
3271 | { | |
5f144b10 GH |
3272 | int first; |
3273 | ||
3274 | tmp = scm_make_continuation (&first); | |
3275 | if (!first) | |
6dbd0af5 MD |
3276 | goto entap; |
3277 | } | |
2f0d1375 | 3278 | scm_ithrow (scm_sym_enter_frame, scm_cons (tmp, SCM_EOL), 0); |
6dbd0af5 MD |
3279 | } |
3280 | entap: | |
3281 | ENTER_APPLY; | |
3282 | #endif | |
6dbd0af5 | 3283 | tail: |
0f2d19dd JB |
3284 | switch (SCM_TYP7 (proc)) |
3285 | { | |
3286 | case scm_tc7_subr_2o: | |
3287 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
3288 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3289 | case scm_tc7_subr_2: | |
269861c7 MD |
3290 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
3291 | wrongnumargs); | |
0f2d19dd JB |
3292 | args = SCM_CAR (args); |
3293 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3294 | case scm_tc7_subr_0: | |
3295 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
3296 | RETURN (SCM_SUBRF (proc) ()) | |
3297 | case scm_tc7_subr_1: | |
3298 | case scm_tc7_subr_1o: | |
3299 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3300 | RETURN (SCM_SUBRF (proc) (arg1)) | |
3301 | case scm_tc7_cxr: | |
3302 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
0f2d19dd JB |
3303 | if (SCM_SUBRF (proc)) |
3304 | { | |
6dbd0af5 MD |
3305 | if (SCM_INUMP (arg1)) |
3306 | { | |
f8de44c1 | 3307 | RETURN (scm_make_real (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)))); |
6dbd0af5 | 3308 | } |
0f2d19dd | 3309 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
3310 | if (SCM_REALP (arg1)) |
3311 | { | |
eb42e2f0 | 3312 | RETURN (scm_make_real (SCM_DSUBRF (proc) (SCM_REAL_VALUE (arg1)))); |
6dbd0af5 | 3313 | } |
0f2d19dd | 3314 | #ifdef SCM_BIGDIG |
26d5b9b4 | 3315 | if (SCM_BIGP (arg1)) |
f8de44c1 | 3316 | RETURN (scm_make_real (SCM_DSUBRF (proc) (scm_big2dbl (arg1)))) |
0f2d19dd JB |
3317 | #endif |
3318 | floerr: | |
9de33deb | 3319 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), arg1, |
3db4adfc | 3320 | SCM_ARG1, SCM_SYMBOL_CHARS (SCM_SNAME (proc))); |
0f2d19dd | 3321 | } |
3201d763 | 3322 | proc = SCM_SNAME (proc); |
0f2d19dd | 3323 | { |
b5c2579a | 3324 | char *chrs = SCM_SYMBOL_CHARS (proc) + SCM_SYMBOL_LENGTH (proc) - 1; |
0f2d19dd JB |
3325 | while ('c' != *--chrs) |
3326 | { | |
0c95b57d | 3327 | SCM_ASSERT (SCM_CONSP (arg1), |
3db4adfc | 3328 | arg1, SCM_ARG1, SCM_SYMBOL_CHARS (proc)); |
0f2d19dd JB |
3329 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); |
3330 | } | |
3331 | RETURN (arg1) | |
3332 | } | |
3333 | case scm_tc7_subr_3: | |
3334 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
3335 | case scm_tc7_lsubr: | |
3336 | #ifdef DEVAL | |
6dbd0af5 | 3337 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
3338 | #else |
3339 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
3340 | #endif | |
3341 | case scm_tc7_lsubr_2: | |
0c95b57d | 3342 | SCM_ASRTGO (SCM_CONSP (args), wrongnumargs); |
0f2d19dd JB |
3343 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) |
3344 | case scm_tc7_asubr: | |
3345 | if (SCM_NULLP (args)) | |
3346 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
3347 | while (SCM_NIMP (args)) | |
3348 | { | |
3349 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3350 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
3351 | args = SCM_CDR (args); | |
3352 | } | |
3353 | RETURN (arg1); | |
3354 | case scm_tc7_rpsubr: | |
3355 | if (SCM_NULLP (args)) | |
3356 | RETURN (SCM_BOOL_T); | |
3357 | while (SCM_NIMP (args)) | |
3358 | { | |
3359 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3360 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
3361 | RETURN (SCM_BOOL_F); | |
3362 | arg1 = SCM_CAR (args); | |
3363 | args = SCM_CDR (args); | |
3364 | } | |
3365 | RETURN (SCM_BOOL_T); | |
3366 | case scm_tcs_closures: | |
3367 | #ifdef DEVAL | |
6dbd0af5 | 3368 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
3369 | #else |
3370 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3371 | #endif | |
cf7c17e9 | 3372 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3373 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3374 | goto wrongnumargs; | |
3375 | #endif | |
1609038c MD |
3376 | |
3377 | /* Copy argument list */ | |
3378 | if (SCM_IMP (arg1)) | |
3379 | args = arg1; | |
3380 | else | |
3381 | { | |
3382 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
cabe682c | 3383 | while (arg1 = SCM_CDR (arg1), SCM_CONSP (arg1)) |
1609038c MD |
3384 | { |
3385 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3386 | SCM_UNSPECIFIED)); | |
3387 | tl = SCM_CDR (tl); | |
3388 | } | |
3389 | SCM_SETCDR (tl, arg1); | |
3390 | } | |
3391 | ||
3392 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
2ddb0920 | 3393 | proc = SCM_CDR (SCM_CODE (proc)); |
e791c18f MD |
3394 | again: |
3395 | arg1 = proc; | |
3396 | while (SCM_NNULLP (arg1 = SCM_CDR (arg1))) | |
2ddb0920 MD |
3397 | { |
3398 | if (SCM_IMP (SCM_CAR (proc))) | |
3399 | { | |
3400 | if (SCM_ISYMP (SCM_CAR (proc))) | |
3401 | { | |
3402 | proc = scm_m_expand_body (proc, args); | |
e791c18f | 3403 | goto again; |
2ddb0920 | 3404 | } |
2ddb0920 MD |
3405 | } |
3406 | else | |
e791c18f MD |
3407 | SCM_CEVAL (SCM_CAR (proc), args); |
3408 | proc = arg1; | |
2ddb0920 | 3409 | } |
e791c18f | 3410 | RETURN (EVALCAR (proc, args)); |
0717dfd8 | 3411 | case scm_tc7_smob: |
68b06924 | 3412 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 3413 | goto badproc; |
afa38f6e | 3414 | if (SCM_UNBNDP (arg1)) |
68b06924 | 3415 | RETURN (SCM_SMOB_APPLY_0 (proc)) |
afa38f6e | 3416 | else if (SCM_NULLP (args)) |
68b06924 | 3417 | RETURN (SCM_SMOB_APPLY_1 (proc, arg1)) |
0717dfd8 | 3418 | else if (SCM_NULLP (SCM_CDR (args))) |
68b06924 | 3419 | RETURN (SCM_SMOB_APPLY_2 (proc, arg1, SCM_CAR (args))) |
0717dfd8 | 3420 | else |
68b06924 | 3421 | RETURN (SCM_SMOB_APPLY_3 (proc, arg1, SCM_CAR (args), SCM_CDR (args))); |
0f2d19dd JB |
3422 | case scm_tc7_cclo: |
3423 | #ifdef DEVAL | |
6dbd0af5 MD |
3424 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3425 | arg1 = proc; | |
3426 | proc = SCM_CCLO_SUBR (proc); | |
3427 | debug.vect[0].a.proc = proc; | |
3428 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3429 | #else |
3430 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3431 | arg1 = proc; |
3432 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3433 | #endif |
0f2d19dd | 3434 | goto tail; |
89efbff4 MD |
3435 | case scm_tc7_pws: |
3436 | proc = SCM_PROCEDURE (proc); | |
3437 | #ifdef DEVAL | |
3438 | debug.vect[0].a.proc = proc; | |
3439 | #endif | |
3440 | goto tail; | |
0c32d76c | 3441 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3442 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3443 | { | |
3444 | #ifdef DEVAL | |
3445 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3446 | #else | |
3447 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3448 | #endif | |
195847fa | 3449 | RETURN (scm_apply_generic (proc, args)); |
f3d2630a MD |
3450 | } |
3451 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3452 | goto badproc; |
3453 | else | |
da7f71d7 MD |
3454 | { |
3455 | #ifdef DEVAL | |
3456 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3457 | #else | |
3458 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3459 | #endif | |
3460 | arg1 = proc; | |
195847fa MD |
3461 | proc = (SCM_I_ENTITYP (proc) |
3462 | ? SCM_ENTITY_PROCEDURE (proc) | |
3463 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 MD |
3464 | #ifdef DEVAL |
3465 | debug.vect[0].a.proc = proc; | |
3466 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3467 | #endif | |
195847fa MD |
3468 | if (SCM_NIMP (proc)) |
3469 | goto tail; | |
3470 | else | |
3471 | goto badproc; | |
da7f71d7 | 3472 | } |
0f2d19dd | 3473 | wrongnumargs: |
f5bf2977 | 3474 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3475 | default: |
3476 | badproc: | |
3477 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3478 | RETURN (arg1); | |
3479 | } | |
3480 | #ifdef DEVAL | |
6dbd0af5 | 3481 | exit: |
b6d75948 | 3482 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3483 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3484 | { |
b7ff98dd MD |
3485 | SCM_CLEAR_TRACED_FRAME (debug); |
3486 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3487 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3488 | else |
3489 | { | |
5f144b10 GH |
3490 | int first; |
3491 | SCM val = scm_make_continuation (&first); | |
3492 | ||
3493 | if (first) | |
3494 | arg1 = val; | |
3495 | else | |
6dbd0af5 | 3496 | { |
5f144b10 | 3497 | proc = val; |
6dbd0af5 MD |
3498 | goto ret; |
3499 | } | |
3500 | } | |
2f0d1375 | 3501 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3502 | } |
3503 | ret: | |
1646d37b | 3504 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3505 | return proc; |
3506 | #endif | |
3507 | } | |
3508 | ||
6dbd0af5 MD |
3509 | |
3510 | /* SECTION: The rest of this file is only read once. | |
3511 | */ | |
3512 | ||
0f2d19dd JB |
3513 | #ifndef DEVAL |
3514 | ||
d9c393f5 JB |
3515 | /* Typechecking for multi-argument MAP and FOR-EACH. |
3516 | ||
47c3f06d | 3517 | Verify that each element of the vector ARGV, except for the first, |
d9c393f5 | 3518 | is a proper list whose length is LEN. Attribute errors to WHO, |
47c3f06d | 3519 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ |
d9c393f5 | 3520 | static inline void |
47c3f06d MD |
3521 | check_map_args (SCM argv, |
3522 | long len, | |
3523 | SCM gf, | |
3524 | SCM proc, | |
3525 | SCM args, | |
3526 | const char *who) | |
d9c393f5 | 3527 | { |
47c3f06d | 3528 | SCM *ve = SCM_VELTS (argv); |
d9c393f5 JB |
3529 | int i; |
3530 | ||
b5c2579a | 3531 | for (i = SCM_VECTOR_LENGTH (argv) - 1; i >= 1; i--) |
d9c393f5 JB |
3532 | { |
3533 | int elt_len = scm_ilength (ve[i]); | |
3534 | ||
3535 | if (elt_len < 0) | |
47c3f06d MD |
3536 | { |
3537 | if (gf) | |
3538 | scm_apply_generic (gf, scm_cons (proc, args)); | |
3539 | else | |
3540 | scm_wrong_type_arg (who, i + 2, ve[i]); | |
3541 | } | |
d9c393f5 JB |
3542 | |
3543 | if (elt_len != len) | |
3544 | scm_out_of_range (who, ve[i]); | |
3545 | } | |
3546 | ||
47c3f06d | 3547 | scm_remember (&argv); |
d9c393f5 JB |
3548 | } |
3549 | ||
3550 | ||
47c3f06d | 3551 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
1cc91f1b | 3552 | |
368bf056 MD |
3553 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3554 | sequentially, starting with the first element(s). This is used in | |
8878f040 | 3555 | evalext.c where the Scheme procedure `map-in-order', which guarantees |
368bf056 | 3556 | sequential behaviour, is implemented using scm_map. If the |
8878f040 | 3557 | behaviour changes, we need to update `map-in-order'. |
368bf056 MD |
3558 | */ |
3559 | ||
0f2d19dd | 3560 | SCM |
1bbd0b84 | 3561 | scm_map (SCM proc, SCM arg1, SCM args) |
af45e3b0 | 3562 | #define FUNC_NAME s_map |
0f2d19dd | 3563 | { |
d9c393f5 | 3564 | long i, len; |
0f2d19dd JB |
3565 | SCM res = SCM_EOL; |
3566 | SCM *pres = &res; | |
3567 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3568 | ||
d9c393f5 | 3569 | len = scm_ilength (arg1); |
47c3f06d MD |
3570 | SCM_GASSERTn (len >= 0, |
3571 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
af45e3b0 | 3572 | SCM_VALIDATE_REST_ARGUMENT (args); |
0f2d19dd JB |
3573 | if (SCM_NULLP (args)) |
3574 | { | |
3575 | while (SCM_NIMP (arg1)) | |
3576 | { | |
47c3f06d MD |
3577 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), |
3578 | SCM_EOL); | |
a23afe53 | 3579 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3580 | arg1 = SCM_CDR (arg1); |
3581 | } | |
3582 | return res; | |
3583 | } | |
47c3f06d | 3584 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3585 | ve = SCM_VELTS (args); |
cf7c17e9 | 3586 | #ifndef SCM_RECKLESS |
47c3f06d | 3587 | check_map_args (args, len, g_map, proc, arg1, s_map); |
0f2d19dd JB |
3588 | #endif |
3589 | while (1) | |
3590 | { | |
3591 | arg1 = SCM_EOL; | |
b5c2579a | 3592 | for (i = SCM_VECTOR_LENGTH (args) - 1; i >= 0; i--) |
0f2d19dd | 3593 | { |
d9c393f5 JB |
3594 | if (SCM_IMP (ve[i])) |
3595 | return res; | |
0f2d19dd JB |
3596 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); |
3597 | ve[i] = SCM_CDR (ve[i]); | |
3598 | } | |
3599 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3600 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3601 | } |
3602 | } | |
af45e3b0 | 3603 | #undef FUNC_NAME |
0f2d19dd JB |
3604 | |
3605 | ||
47c3f06d | 3606 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
1cc91f1b | 3607 | |
0f2d19dd | 3608 | SCM |
1bbd0b84 | 3609 | scm_for_each (SCM proc, SCM arg1, SCM args) |
af45e3b0 | 3610 | #define FUNC_NAME s_for_each |
0f2d19dd JB |
3611 | { |
3612 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
d9c393f5 | 3613 | long i, len; |
d9c393f5 | 3614 | len = scm_ilength (arg1); |
47c3f06d MD |
3615 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), |
3616 | SCM_ARG2, s_for_each); | |
af45e3b0 | 3617 | SCM_VALIDATE_REST_ARGUMENT (args); |
0f2d19dd JB |
3618 | if SCM_NULLP (args) |
3619 | { | |
3620 | while SCM_NIMP (arg1) | |
3621 | { | |
0f2d19dd JB |
3622 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); |
3623 | arg1 = SCM_CDR (arg1); | |
3624 | } | |
3625 | return SCM_UNSPECIFIED; | |
3626 | } | |
47c3f06d | 3627 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3628 | ve = SCM_VELTS (args); |
cf7c17e9 | 3629 | #ifndef SCM_RECKLESS |
47c3f06d | 3630 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); |
0f2d19dd JB |
3631 | #endif |
3632 | while (1) | |
3633 | { | |
3634 | arg1 = SCM_EOL; | |
b5c2579a | 3635 | for (i = SCM_VECTOR_LENGTH (args) - 1; i >= 0; i--) |
0f2d19dd JB |
3636 | { |
3637 | if SCM_IMP | |
3638 | (ve[i]) return SCM_UNSPECIFIED; | |
3639 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3640 | ve[i] = SCM_CDR (ve[i]); | |
3641 | } | |
3642 | scm_apply (proc, arg1, SCM_EOL); | |
3643 | } | |
3644 | } | |
af45e3b0 | 3645 | #undef FUNC_NAME |
0f2d19dd | 3646 | |
1cc91f1b | 3647 | |
0f2d19dd | 3648 | SCM |
6e8d25a6 | 3649 | scm_closure (SCM code, SCM env) |
0f2d19dd JB |
3650 | { |
3651 | register SCM z; | |
3652 | SCM_NEWCELL (z); | |
3653 | SCM_SETCODE (z, code); | |
a23afe53 | 3654 | SCM_SETENV (z, env); |
0f2d19dd JB |
3655 | return z; |
3656 | } | |
3657 | ||
3658 | ||
e841c3e0 | 3659 | scm_bits_t scm_tc16_promise; |
1cc91f1b | 3660 | |
0f2d19dd | 3661 | SCM |
6e8d25a6 | 3662 | scm_makprom (SCM code) |
0f2d19dd | 3663 | { |
cf498326 | 3664 | SCM_RETURN_NEWSMOB (scm_tc16_promise, SCM_UNPACK (code)); |
0f2d19dd JB |
3665 | } |
3666 | ||
3667 | ||
1cc91f1b | 3668 | |
0f2d19dd | 3669 | static int |
e841c3e0 | 3670 | promise_print (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 3671 | { |
19402679 | 3672 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3673 | scm_puts ("#<promise ", port); |
19402679 MD |
3674 | SCM_SET_WRITINGP (pstate, 1); |
3675 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3676 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3677 | scm_putc ('>', port); |
0f2d19dd JB |
3678 | return !0; |
3679 | } | |
3680 | ||
3681 | ||
3b3b36dd | 3682 | SCM_DEFINE (scm_force, "force", 1, 0, 0, |
1bbd0b84 | 3683 | (SCM x), |
445f675c DH |
3684 | "If the promise X has not been computed yet, compute and return\n" |
3685 | "X, otherwise just return the previously computed value.") | |
1bbd0b84 | 3686 | #define FUNC_NAME s_scm_force |
0f2d19dd | 3687 | { |
445f675c DH |
3688 | SCM_VALIDATE_SMOB (1, x, promise); |
3689 | if (!((1L << 16) & SCM_CELL_WORD_0 (x))) | |
0f2d19dd | 3690 | { |
445f675c DH |
3691 | SCM ans = scm_apply (SCM_CELL_OBJECT_1 (x), SCM_EOL, SCM_EOL); |
3692 | if (!((1L << 16) & SCM_CELL_WORD_0 (x))) | |
0f2d19dd JB |
3693 | { |
3694 | SCM_DEFER_INTS; | |
445f675c DH |
3695 | SCM_SET_CELL_OBJECT_1 (x, ans); |
3696 | SCM_SET_CELL_WORD_0 (x, SCM_CELL_WORD_0 (x) | (1L << 16)); | |
0f2d19dd JB |
3697 | SCM_ALLOW_INTS; |
3698 | } | |
3699 | } | |
445f675c | 3700 | return SCM_CELL_OBJECT_1 (x); |
0f2d19dd | 3701 | } |
1bbd0b84 | 3702 | #undef FUNC_NAME |
0f2d19dd | 3703 | |
445f675c | 3704 | |
a1ec6916 | 3705 | SCM_DEFINE (scm_promise_p, "promise?", 1, 0, 0, |
1bbd0b84 | 3706 | (SCM x), |
b380b885 MD |
3707 | "Return true if @var{obj} is a promise, i.e. a delayed computation\n" |
3708 | "(@pxref{Delayed evaluation,,,r4rs.info,The Revised^4 Report on Scheme}).") | |
1bbd0b84 | 3709 | #define FUNC_NAME s_scm_promise_p |
0f2d19dd | 3710 | { |
e841c3e0 | 3711 | return SCM_BOOL (SCM_TYP16_PREDICATE (scm_tc16_promise, x)); |
0f2d19dd | 3712 | } |
1bbd0b84 | 3713 | #undef FUNC_NAME |
0f2d19dd | 3714 | |
445f675c | 3715 | |
a1ec6916 | 3716 | SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0, |
1bbd0b84 | 3717 | (SCM xorig, SCM x, SCM y), |
11768c04 NJ |
3718 | "Create and return a new pair whose car and cdr are @var{x} and @var{y}.\n" |
3719 | "Any source properties associated with @var{xorig} are also associated\n" | |
3720 | "with the new pair.") | |
1bbd0b84 | 3721 | #define FUNC_NAME s_scm_cons_source |
26d5b9b4 MD |
3722 | { |
3723 | SCM p, z; | |
3724 | SCM_NEWCELL (z); | |
445f675c DH |
3725 | SCM_SET_CELL_OBJECT_0 (z, x); |
3726 | SCM_SET_CELL_OBJECT_1 (z, y); | |
26d5b9b4 MD |
3727 | /* Copy source properties possibly associated with xorig. */ |
3728 | p = scm_whash_lookup (scm_source_whash, xorig); | |
445f675c | 3729 | if (!SCM_IMP (p)) |
26d5b9b4 MD |
3730 | scm_whash_insert (scm_source_whash, z, p); |
3731 | return z; | |
3732 | } | |
1bbd0b84 | 3733 | #undef FUNC_NAME |
26d5b9b4 | 3734 | |
445f675c | 3735 | |
a1ec6916 | 3736 | SCM_DEFINE (scm_copy_tree, "copy-tree", 1, 0, 0, |
1bbd0b84 | 3737 | (SCM obj), |
b380b885 MD |
3738 | "Recursively copy the data tree that is bound to @var{obj}, and return a\n" |
3739 | "pointer to the new data structure. @code{copy-tree} recurses down the\n" | |
3740 | "contents of both pairs and vectors (since both cons cells and vector\n" | |
3741 | "cells may point to arbitrary objects), and stops recursing when it hits\n" | |
3742 | "any other object.") | |
1bbd0b84 | 3743 | #define FUNC_NAME s_scm_copy_tree |
0f2d19dd JB |
3744 | { |
3745 | SCM ans, tl; | |
26d5b9b4 | 3746 | if (SCM_IMP (obj)) |
ff467021 | 3747 | return obj; |
3910272e MD |
3748 | if (SCM_VECTORP (obj)) |
3749 | { | |
b5c2579a | 3750 | scm_sizet i = SCM_VECTOR_LENGTH (obj); |
3910272e MD |
3751 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); |
3752 | while (i--) | |
3753 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3754 | return ans; | |
3755 | } | |
ff467021 | 3756 | if (SCM_NCONSP (obj)) |
0f2d19dd | 3757 | return obj; |
26d5b9b4 MD |
3758 | ans = tl = scm_cons_source (obj, |
3759 | scm_copy_tree (SCM_CAR (obj)), | |
3760 | SCM_UNSPECIFIED); | |
cabe682c | 3761 | while (obj = SCM_CDR (obj), SCM_CONSP (obj)) |
a23afe53 MD |
3762 | { |
3763 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3764 | SCM_UNSPECIFIED)); | |
3765 | tl = SCM_CDR (tl); | |
3766 | } | |
3767 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3768 | return ans; |
3769 | } | |
1bbd0b84 | 3770 | #undef FUNC_NAME |
0f2d19dd | 3771 | |
1cc91f1b | 3772 | |
68d8be66 MD |
3773 | SCM scm_system_transformer; |
3774 | ||
0f2d19dd | 3775 | SCM |
68d8be66 | 3776 | scm_i_eval_x (SCM exp, SCM env) |
0f2d19dd | 3777 | { |
549e6ec6 MD |
3778 | SCM transformer = scm_fluid_ref (SCM_CDR (scm_system_transformer)); |
3779 | if (SCM_NIMP (transformer)) | |
68d8be66 MD |
3780 | exp = scm_apply (transformer, exp, scm_listofnull); |
3781 | return SCM_XEVAL (exp, env); | |
0f2d19dd JB |
3782 | } |
3783 | ||
68d8be66 MD |
3784 | SCM |
3785 | scm_i_eval (SCM exp, SCM env) | |
3786 | { | |
3787 | SCM transformer = scm_fluid_ref (SCM_CDR (scm_system_transformer)); | |
3788 | if (SCM_NIMP (transformer)) | |
3789 | exp = scm_apply (transformer, exp, scm_listofnull); | |
3790 | return SCM_XEVAL (scm_copy_tree (exp), env); | |
3791 | } | |
3792 | ||
3793 | SCM | |
3794 | scm_eval_x (SCM exp, SCM module) | |
0f2d19dd | 3795 | { |
68d8be66 MD |
3796 | return scm_i_eval_x (exp, |
3797 | scm_top_level_env (SCM_MODULE_EVAL_CLOSURE (module))); | |
0f2d19dd JB |
3798 | } |
3799 | ||
68d8be66 MD |
3800 | /* Eval does not take the second arg optionally. This is intentional |
3801 | * in order to be R5RS compatible, and to prepare for the new module | |
3802 | * system, where we would like to make the choice of evaluation | |
3803 | * environment explicit. | |
3804 | */ | |
549e6ec6 | 3805 | |
68d8be66 MD |
3806 | SCM_DEFINE (scm_eval, "eval", 2, 0, 0, |
3807 | (SCM exp, SCM environment), | |
b380b885 | 3808 | "Evaluate @var{exp}, a list representing a Scheme expression, in the\n" |
68d8be66 | 3809 | "environment given by @var{environment specifier}.") |
1bbd0b84 | 3810 | #define FUNC_NAME s_scm_eval |
0f2d19dd | 3811 | { |
68d8be66 MD |
3812 | SCM_VALIDATE_MODULE (2, environment); |
3813 | return scm_i_eval (scm_copy_tree (exp), | |
3814 | scm_top_level_env (SCM_MODULE_EVAL_CLOSURE (environment))); | |
0f2d19dd | 3815 | } |
1bbd0b84 | 3816 | #undef FUNC_NAME |
0f2d19dd | 3817 | |
68d8be66 | 3818 | #if (SCM_DEBUG_DEPRECATED == 0) |
1cc91f1b | 3819 | |
68d8be66 MD |
3820 | /* Use scm_selected_module () or scm_interaction_environment () |
3821 | * instead. The former is the module selected during loading of code. | |
3822 | * The latter is the module in which the user of this thread currently | |
3823 | * types expressions. | |
3824 | */ | |
3825 | ||
3826 | SCM scm_top_level_lookup_closure_var; | |
3827 | ||
3828 | /* Avoid using this functionality altogether (except for implementing | |
3829 | * libguile, where you can use scm_i_eval or scm_i_eval_x). | |
3830 | * | |
3831 | * Applications should use either C level scm_eval_x or Scheme scm_eval. */ | |
3832 | ||
3833 | SCM | |
3834 | scm_eval_3 (SCM obj, int copyp, SCM env) | |
3835 | { | |
3836 | if (copyp) | |
3837 | return scm_i_eval (obj, env); | |
3838 | else | |
3839 | return scm_i_eval_x (obj, env); | |
3840 | } | |
3841 | ||
3842 | SCM_DEFINE (scm_eval2, "eval2", 2, 0, 0, | |
3843 | (SCM obj, SCM env_thunk), | |
3844 | "Evaluate @var{exp}, a Scheme expression, in the environment designated\n" | |
3845 | "by @var{lookup}, a symbol-lookup function. @code{(eval exp)} is\n" | |
3846 | "equivalent to @code{(eval2 exp *top-level-lookup-closure*)}.") | |
3847 | #define FUNC_NAME s_scm_eval2 | |
0f2d19dd | 3848 | { |
68d8be66 | 3849 | return scm_i_eval (obj, scm_top_level_env (env_thunk)); |
0f2d19dd | 3850 | } |
68d8be66 MD |
3851 | #undef FUNC_NAME |
3852 | ||
3853 | #endif /* DEPRECATED */ | |
0f2d19dd | 3854 | |
6dbd0af5 MD |
3855 | |
3856 | /* At this point, scm_deval and scm_dapply are generated. | |
3857 | */ | |
3858 | ||
0f2d19dd | 3859 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3860 | # define DEVAL |
3861 | # include "eval.c" | |
0f2d19dd JB |
3862 | #endif |
3863 | ||
3864 | ||
1cc91f1b | 3865 | |
0f2d19dd JB |
3866 | void |
3867 | scm_init_eval () | |
0f2d19dd | 3868 | { |
33b97402 MD |
3869 | scm_init_opts (scm_evaluator_traps, |
3870 | scm_evaluator_trap_table, | |
3871 | SCM_N_EVALUATOR_TRAPS); | |
3872 | scm_init_opts (scm_eval_options_interface, | |
3873 | scm_eval_opts, | |
3874 | SCM_N_EVAL_OPTIONS); | |
3875 | ||
f99c9c28 MD |
3876 | scm_tc16_promise = scm_make_smob_type ("promise", 0); |
3877 | scm_set_smob_mark (scm_tc16_promise, scm_markcdr); | |
e841c3e0 | 3878 | scm_set_smob_print (scm_tc16_promise, promise_print); |
b8229a3b | 3879 | |
81123e6d | 3880 | scm_f_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
549e6ec6 MD |
3881 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", |
3882 | scm_make_fluid ()); | |
2f0d1375 MD |
3883 | scm_sym_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); |
3884 | scm_sym_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3885 | scm_sym_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3886 | scm_sym_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3887 | scm_sym_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
0f2d19dd | 3888 | |
43a912cf MD |
3889 | scm_lisp_nil = scm_sysintern ("nil", SCM_UNDEFINED); |
3890 | SCM_SETCDR (scm_lisp_nil, SCM_CAR (scm_lisp_nil)); | |
3891 | scm_lisp_nil = SCM_CAR (scm_lisp_nil); | |
3892 | scm_lisp_t = scm_sysintern ("t", SCM_UNDEFINED); | |
3893 | SCM_SETCDR (scm_lisp_t, SCM_CAR (scm_lisp_t)); | |
3894 | scm_lisp_t = SCM_CAR (scm_lisp_t); | |
73b64342 | 3895 | |
0f2d19dd | 3896 | /* acros */ |
0f2d19dd JB |
3897 | /* end of acros */ |
3898 | ||
68d8be66 | 3899 | #if SCM_DEBUG_DEPRECATED == 0 |
dc19d1d2 | 3900 | scm_top_level_lookup_closure_var = |
549e6ec6 | 3901 | scm_sysintern ("*top-level-lookup-closure*", scm_make_fluid ()); |
68d8be66 | 3902 | #endif |
0f2d19dd | 3903 | |
6dbd0af5 | 3904 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
3905 | scm_sym_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); |
3906 | scm_sym_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3907 | scm_sym_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3908 | scm_sym_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
6dbd0af5 MD |
3909 | #endif |
3910 | ||
8dc9439f | 3911 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 3912 | #include "libguile/eval.x" |
8dc9439f | 3913 | #endif |
25eaf21a MD |
3914 | |
3915 | scm_add_feature ("delay"); | |
0f2d19dd | 3916 | } |
0f2d19dd | 3917 | |
6dbd0af5 | 3918 | #endif /* !DEVAL */ |
89e00824 ML |
3919 | |
3920 | /* | |
3921 | Local Variables: | |
3922 | c-file-style: "gnu" | |
3923 | End: | |
3924 | */ |