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f1e06a96 | 1 | /* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 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" | |
09074dbf | 84 | #include "libguile/dynwind.h" |
a0599745 MD |
85 | #include "libguile/alist.h" |
86 | #include "libguile/eq.h" | |
87 | #include "libguile/continuations.h" | |
88 | #include "libguile/throw.h" | |
89 | #include "libguile/smob.h" | |
90 | #include "libguile/macros.h" | |
91 | #include "libguile/procprop.h" | |
92 | #include "libguile/hashtab.h" | |
93 | #include "libguile/hash.h" | |
94 | #include "libguile/srcprop.h" | |
95 | #include "libguile/stackchk.h" | |
96 | #include "libguile/objects.h" | |
97 | #include "libguile/async.h" | |
98 | #include "libguile/feature.h" | |
99 | #include "libguile/modules.h" | |
100 | #include "libguile/ports.h" | |
101 | #include "libguile/root.h" | |
102 | #include "libguile/vectors.h" | |
549e6ec6 | 103 | #include "libguile/fluids.h" |
a0599745 MD |
104 | |
105 | #include "libguile/validate.h" | |
106 | #include "libguile/eval.h" | |
89efbff4 | 107 | |
0f2d19dd JB |
108 | \f |
109 | ||
6dbd0af5 MD |
110 | /* The evaluator contains a plethora of EVAL symbols. |
111 | * This is an attempt at explanation. | |
112 | * | |
113 | * The following macros should be used in code which is read twice | |
114 | * (where the choice of evaluator is hard soldered): | |
115 | * | |
116 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
117 | * Originally, it is defined to scm_ceval, but is redefined to | |
118 | * scm_deval during the second pass. | |
119 | * | |
120 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
121 | * only side effects of expressions matter. All immediates are | |
122 | * ignored. | |
123 | * | |
6cb702da | 124 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
125 | * immediate. (This macro never calls an evaluator.) |
126 | * | |
127 | * EVALCAR evaluates the car of an expression. | |
128 | * | |
129 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
130 | * car is a lisp cell. | |
131 | * | |
132 | * The following macros should be used in code which is read once | |
133 | * (where the choice of evaluator is dynamic): | |
134 | * | |
6cb702da | 135 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
136 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
137 | * mode. | |
138 | * | |
6cb702da | 139 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
140 | * depending on the debugging mode. |
141 | * | |
142 | * The main motivation for keeping this plethora is efficiency | |
143 | * together with maintainability (=> locality of code). | |
144 | */ | |
145 | ||
6cb702da | 146 | #define SCM_CEVAL scm_ceval |
7d2b68a8 | 147 | #define SIDEVAL(x, env) if (SCM_NIMP (x)) SCM_CEVAL((x), (env)) |
6cb702da | 148 | |
7d2b68a8 MD |
149 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR (x)) \ |
150 | ? *scm_lookupcar (x, env, 1) \ | |
151 | : SCM_CEVAL (SCM_CAR (x), env)) | |
0f2d19dd | 152 | |
7d2b68a8 MD |
153 | #define EVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \ |
154 | ? (SCM_IMP (SCM_CAR (x)) \ | |
155 | ? SCM_EVALIM (SCM_CAR (x), env) \ | |
156 | : SCM_GLOC_VAL (SCM_CAR (x))) \ | |
157 | : EVALCELLCAR (x, env)) | |
0f2d19dd | 158 | |
e2806c10 | 159 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
160 | |
161 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 162 | |
0f2d19dd | 163 | SCM * |
6e8d25a6 | 164 | scm_ilookup (SCM iloc, SCM env) |
0f2d19dd JB |
165 | { |
166 | register int ir = SCM_IFRAME (iloc); | |
167 | register SCM er = env; | |
168 | for (; 0 != ir; --ir) | |
169 | er = SCM_CDR (er); | |
170 | er = SCM_CAR (er); | |
171 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
172 | er = SCM_CDR (er); | |
173 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
174 | return SCM_CDRLOC (er); |
175 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
176 | } |
177 | #endif | |
178 | ||
f8769b1d MV |
179 | #ifdef USE_THREADS |
180 | ||
181 | /* The Lookup Car Race | |
182 | - by Eva Luator | |
183 | ||
184 | Memoization of variables and special forms is done while executing | |
185 | the code for the first time. As long as there is only one thread | |
186 | everything is fine, but as soon as two threads execute the same | |
187 | code concurrently `for the first time' they can come into conflict. | |
188 | ||
189 | This memoization includes rewriting variable references into more | |
190 | efficient forms and expanding macros. Furthermore, macro expansion | |
191 | includes `compiling' special forms like `let', `cond', etc. into | |
192 | tree-code instructions. | |
193 | ||
194 | There shouldn't normally be a problem with memoizing local and | |
195 | global variable references (into ilocs and glocs), because all | |
196 | threads will mutate the code in *exactly* the same way and (if I | |
197 | read the C code correctly) it is not possible to observe a half-way | |
198 | mutated cons cell. The lookup procedure can handle this | |
199 | transparently without any critical sections. | |
200 | ||
201 | It is different with macro expansion, because macro expansion | |
202 | happens outside of the lookup procedure and can't be | |
203 | undone. Therefore it can't cope with it. It has to indicate | |
204 | failure when it detects a lost race and hope that the caller can | |
205 | handle it. Luckily, it turns out that this is the case. | |
206 | ||
207 | An example to illustrate this: Suppose that the follwing form will | |
208 | be memoized concurrently by two threads | |
209 | ||
210 | (let ((x 12)) x) | |
211 | ||
212 | Let's first examine the lookup of X in the body. The first thread | |
213 | decides that it has to find the symbol "x" in the environment and | |
214 | starts to scan it. Then the other thread takes over and actually | |
215 | overtakes the first. It looks up "x" and substitutes an | |
216 | appropriate iloc for it. Now the first thread continues and | |
217 | completes its lookup. It comes to exactly the same conclusions as | |
218 | the second one and could - without much ado - just overwrite the | |
219 | iloc with the same iloc. | |
220 | ||
221 | But let's see what will happen when the race occurs while looking | |
222 | up the symbol "let" at the start of the form. It could happen that | |
223 | the second thread interrupts the lookup of the first thread and not | |
224 | only substitutes a gloc for it but goes right ahead and replaces it | |
225 | with the compiled form (#@let* (x 12) x). Now, when the first | |
226 | thread completes its lookup, it would replace the #@let* with a | |
227 | gloc pointing to the "let" binding, effectively reverting the form | |
228 | to (let (x 12) x). This is wrong. It has to detect that it has | |
229 | lost the race and the evaluator has to reconsider the changed form | |
230 | completely. | |
231 | ||
232 | This race condition could be resolved with some kind of traffic | |
233 | light (like mutexes) around scm_lookupcar, but I think that it is | |
234 | best to avoid them in this case. They would serialize memoization | |
235 | completely and because lookup involves calling arbitrary Scheme | |
236 | code (via the lookup-thunk), threads could be blocked for an | |
237 | arbitrary amount of time or even deadlock. But with the current | |
238 | solution a lot of unnecessary work is potentially done. */ | |
239 | ||
240 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
241 | return NULL to indicate a failed lookup due to some race conditions | |
242 | between threads. This only happens when VLOC is the first cell of | |
243 | a special form that will eventually be memoized (like `let', etc.) | |
244 | In that case the whole lookup is bogus and the caller has to | |
245 | reconsider the complete special form. | |
246 | ||
247 | SCM_LOOKUPCAR is still there, of course. It just calls | |
248 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
249 | should only be called when it is known that VLOC is not the first | |
250 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
26d5b9b4 MD |
251 | for NULL. I think I've found the only places where this |
252 | applies. */ | |
f8769b1d MV |
253 | |
254 | #endif /* USE_THREADS */ | |
1cc91f1b | 255 | |
f25f761d GH |
256 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
257 | ||
d0b7bad7 | 258 | #ifdef USE_THREADS |
8ecf1f13 | 259 | static SCM * |
26d5b9b4 | 260 | scm_lookupcar1 (SCM vloc, SCM genv, int check) |
d0b7bad7 MD |
261 | #else |
262 | SCM * | |
26d5b9b4 | 263 | scm_lookupcar (SCM vloc, SCM genv, int check) |
d0b7bad7 | 264 | #endif |
0f2d19dd JB |
265 | { |
266 | SCM env = genv; | |
e3173f93 JB |
267 | register SCM *al, fl, var = SCM_CAR (vloc); |
268 | #ifdef USE_THREADS | |
269 | register SCM var2 = var; | |
270 | #endif | |
0f2d19dd JB |
271 | #ifdef MEMOIZE_LOCALS |
272 | register SCM iloc = SCM_ILOC00; | |
273 | #endif | |
274 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
275 | { | |
790071cd | 276 | if (!SCM_CONSP (SCM_CAR (env))) |
0f2d19dd | 277 | break; |
a23afe53 | 278 | al = SCM_CARLOC (env); |
0f2d19dd JB |
279 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
280 | { | |
281 | if (SCM_NCONSP (fl)) | |
33b97402 | 282 | { |
cf498326 | 283 | if (SCM_EQ_P (fl, var)) |
0f2d19dd JB |
284 | { |
285 | #ifdef MEMOIZE_LOCALS | |
f8769b1d | 286 | #ifdef USE_THREADS |
cf498326 | 287 | if (! SCM_EQ_P (SCM_CAR (vloc), var)) |
f8769b1d MV |
288 | goto race; |
289 | #endif | |
3201d763 | 290 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (iloc) + SCM_ICDR); |
0f2d19dd | 291 | #endif |
a23afe53 | 292 | return SCM_CDRLOC (*al); |
0f2d19dd | 293 | } |
33b97402 MD |
294 | else |
295 | break; | |
296 | } | |
a23afe53 | 297 | al = SCM_CDRLOC (*al); |
cf498326 | 298 | if (SCM_EQ_P (SCM_CAR (fl), var)) |
0f2d19dd JB |
299 | { |
300 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 301 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
302 | if (SCM_UNBNDP (SCM_CAR (*al))) |
303 | { | |
304 | env = SCM_EOL; | |
305 | goto errout; | |
306 | } | |
f8769b1d MV |
307 | #endif |
308 | #ifdef USE_THREADS | |
309 | if (SCM_CAR (vloc) != var) | |
310 | goto race; | |
0f2d19dd | 311 | #endif |
a23afe53 | 312 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 313 | #endif |
a23afe53 | 314 | return SCM_CARLOC (*al); |
0f2d19dd JB |
315 | } |
316 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 317 | iloc = SCM_PACK (SCM_UNPACK (iloc) + SCM_IDINC); |
0f2d19dd JB |
318 | #endif |
319 | } | |
320 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 321 | iloc = SCM_PACK ((~SCM_IDSTMSK) & (SCM_UNPACK(iloc) + SCM_IFRINC)); |
0f2d19dd JB |
322 | #endif |
323 | } | |
324 | { | |
325 | SCM top_thunk, vcell; | |
790071cd | 326 | if (SCM_NIMP (env)) |
0f2d19dd | 327 | { |
790071cd | 328 | top_thunk = SCM_CAR (env); /* env now refers to a top level env thunk */ |
0f2d19dd JB |
329 | env = SCM_CDR (env); |
330 | } | |
331 | else | |
332 | top_thunk = SCM_BOOL_F; | |
333 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
cf498326 | 334 | if (SCM_FALSEP (vcell)) |
0f2d19dd JB |
335 | goto errout; |
336 | else | |
337 | var = vcell; | |
338 | } | |
cf7c17e9 | 339 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
340 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
341 | { | |
342 | var = SCM_CAR (var); | |
343 | errout: | |
f5bf2977 | 344 | /* scm_everr (vloc, genv,...) */ |
26d5b9b4 | 345 | if (check) |
f25f761d GH |
346 | { |
347 | if (SCM_NULLP (env)) | |
70d63753 | 348 | scm_error (scm_unbound_variable_key, NULL, "Unbound variable: ~S", |
f25f761d GH |
349 | scm_cons (var, SCM_EOL), SCM_BOOL_F); |
350 | else | |
70d63753 | 351 | scm_misc_error (NULL, "Damaged environment: ~S", |
f25f761d GH |
352 | scm_cons (var, SCM_EOL)); |
353 | } | |
09e4d064 DH |
354 | else { |
355 | /* A variable could not be found, but we shall not throw an error. */ | |
356 | static SCM undef_object = SCM_UNDEFINED; | |
3201d763 | 357 | return &undef_object; |
09e4d064 | 358 | } |
0f2d19dd JB |
359 | } |
360 | #endif | |
f8769b1d MV |
361 | #ifdef USE_THREADS |
362 | if (SCM_CAR (vloc) != var2) | |
363 | { | |
364 | /* Some other thread has changed the very cell we are working | |
365 | on. In effect, it must have done our job or messed it up | |
366 | completely. */ | |
367 | race: | |
368 | var = SCM_CAR (vloc); | |
3201d763 | 369 | if (SCM_ITAG3 (var) == scm_tc3_cons_gloc) |
f8769b1d MV |
370 | return SCM_GLOC_VAL_LOC (var); |
371 | #ifdef MEMOIZE_LOCALS | |
d1ca2c64 | 372 | if (SCM_ITAG7 (var) == SCM_ITAG7 (SCM_ILOC00)) |
f8769b1d MV |
373 | return scm_ilookup (var, genv); |
374 | #endif | |
375 | /* We can't cope with anything else than glocs and ilocs. When | |
376 | a special form has been memoized (i.e. `let' into `#@let') we | |
377 | return NULL and expect the calling function to do the right | |
378 | thing. For the evaluator, this means going back and redoing | |
379 | the dispatch on the car of the form. */ | |
380 | return NULL; | |
381 | } | |
382 | #endif /* USE_THREADS */ | |
383 | ||
3201d763 | 384 | SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (var) + scm_tc3_cons_gloc); |
0f2d19dd | 385 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 386 | * but syntax or something.... */ |
a23afe53 | 387 | return SCM_CDRLOC (var); |
0f2d19dd JB |
388 | } |
389 | ||
f8769b1d MV |
390 | #ifdef USE_THREADS |
391 | SCM * | |
6e8d25a6 | 392 | scm_lookupcar (SCM vloc, SCM genv, int check) |
f8769b1d | 393 | { |
26d5b9b4 | 394 | SCM *loc = scm_lookupcar1 (vloc, genv, check); |
f8769b1d MV |
395 | if (loc == NULL) |
396 | abort (); | |
397 | return loc; | |
398 | } | |
f8769b1d MV |
399 | #endif |
400 | ||
0f2d19dd | 401 | #define unmemocar scm_unmemocar |
1cc91f1b | 402 | |
0f2d19dd | 403 | SCM |
6e8d25a6 | 404 | scm_unmemocar (SCM form, SCM env) |
0f2d19dd | 405 | { |
0f2d19dd JB |
406 | SCM c; |
407 | ||
408 | if (SCM_IMP (form)) | |
409 | return form; | |
410 | c = SCM_CAR (form); | |
b0c54567 | 411 | if (SCM_ITAG3 (c) == scm_tc3_cons_gloc) |
a963f787 | 412 | SCM_SETCAR (form, SCM_GLOC_SYM (c)); |
0f2d19dd | 413 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 414 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
415 | else if (SCM_ILOCP (c)) |
416 | { | |
b0c54567 DH |
417 | int ir; |
418 | ||
0f2d19dd JB |
419 | for (ir = SCM_IFRAME (c); ir != 0; --ir) |
420 | env = SCM_CDR (env); | |
421 | env = SCM_CAR (SCM_CAR (env)); | |
422 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
423 | env = SCM_CDR (env); | |
a23afe53 | 424 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 425 | } |
6dbd0af5 | 426 | #endif |
0f2d19dd JB |
427 | #endif |
428 | return form; | |
429 | } | |
430 | ||
1cc91f1b | 431 | |
0f2d19dd | 432 | SCM |
6e8d25a6 | 433 | scm_eval_car (SCM pair, SCM env) |
0f2d19dd | 434 | { |
6cb702da | 435 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
436 | } |
437 | ||
438 | \f | |
439 | /* | |
440 | * The following rewrite expressions and | |
441 | * some memoized forms have different syntax | |
442 | */ | |
443 | ||
3eeba8d4 JB |
444 | const char scm_s_expression[] = "missing or extra expression"; |
445 | const char scm_s_test[] = "bad test"; | |
446 | const char scm_s_body[] = "bad body"; | |
447 | const char scm_s_bindings[] = "bad bindings"; | |
448 | const char scm_s_variable[] = "bad variable"; | |
449 | const char scm_s_clauses[] = "bad or missing clauses"; | |
450 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 451 | |
85db4a2c DH |
452 | SCM_GLOBAL_SYMBOL (scm_sym_dot, "."); |
453 | SCM_GLOBAL_SYMBOL (scm_sym_arrow, "=>"); | |
454 | SCM_GLOBAL_SYMBOL (scm_sym_else, "else"); | |
455 | SCM_GLOBAL_SYMBOL (scm_sym_unquote, "unquote"); | |
456 | SCM_GLOBAL_SYMBOL (scm_sym_uq_splicing, "unquote-splicing"); | |
81123e6d MD |
457 | |
458 | SCM scm_f_apply; | |
b8229a3b | 459 | |
6dbd0af5 | 460 | #ifdef DEBUG_EXTENSIONS |
85db4a2c DH |
461 | SCM_GLOBAL_SYMBOL (scm_sym_enter_frame, "enter-frame"); |
462 | SCM_GLOBAL_SYMBOL (scm_sym_apply_frame, "apply-frame"); | |
463 | SCM_GLOBAL_SYMBOL (scm_sym_exit_frame, "exit-frame"); | |
464 | SCM_GLOBAL_SYMBOL (scm_sym_trace, "trace"); | |
6dbd0af5 | 465 | #endif |
0f2d19dd | 466 | |
0f2d19dd | 467 | |
26d5b9b4 MD |
468 | /* Check that the body denoted by XORIG is valid and rewrite it into |
469 | its internal form. The internal form of a body is just the body | |
470 | itself, but prefixed with an ISYM that denotes to what kind of | |
471 | outer construct this body belongs. A lambda body starts with | |
472 | SCM_IM_LAMBDA, for example, a body of a let starts with SCM_IM_LET, | |
473 | etc. The one exception is a body that belongs to a letrec that has | |
474 | been formed by rewriting internal defines: it starts with | |
475 | SCM_IM_DEFINE. */ | |
476 | ||
477 | /* XXX - Besides controlling the rewriting of internal defines, the | |
478 | additional ISYM could be used for improved error messages. | |
479 | This is not done yet. */ | |
480 | ||
481 | static SCM | |
6e8d25a6 | 482 | scm_m_body (SCM op, SCM xorig, const char *what) |
26d5b9b4 | 483 | { |
ab66ae47 | 484 | SCM_ASSYNT (scm_ilength (xorig) >= 1, xorig, scm_s_expression, what); |
26d5b9b4 MD |
485 | |
486 | /* Don't add another ISYM if one is present already. */ | |
487 | if (SCM_ISYMP (SCM_CAR (xorig))) | |
488 | return xorig; | |
489 | ||
490 | /* Retain possible doc string. */ | |
44d3cb0d | 491 | if (!SCM_CONSP (SCM_CAR (xorig))) |
26d5b9b4 MD |
492 | { |
493 | if (SCM_NNULLP (SCM_CDR(xorig))) | |
494 | return scm_cons (SCM_CAR (xorig), | |
495 | scm_m_body (op, SCM_CDR(xorig), what)); | |
496 | return xorig; | |
497 | } | |
498 | ||
ab66ae47 | 499 | return scm_cons (op, xorig); |
26d5b9b4 MD |
500 | } |
501 | ||
b8229a3b | 502 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
2f0d1375 | 503 | SCM_GLOBAL_SYMBOL(scm_sym_quote, s_quote); |
1cc91f1b | 504 | |
0f2d19dd | 505 | SCM |
6e8d25a6 | 506 | scm_m_quote (SCM xorig, SCM env) |
0f2d19dd | 507 | { |
26d5b9b4 MD |
508 | SCM x = scm_copy_tree (SCM_CDR (xorig)); |
509 | ||
6cb702da | 510 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 511 | xorig, scm_s_expression, s_quote); |
3a3111a8 | 512 | return scm_cons (SCM_IM_QUOTE, x); |
0f2d19dd JB |
513 | } |
514 | ||
515 | ||
1cc91f1b | 516 | |
b8229a3b | 517 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
2f0d1375 | 518 | SCM_GLOBAL_SYMBOL(scm_sym_begin, s_begin); |
b8229a3b | 519 | |
0f2d19dd | 520 | SCM |
6e8d25a6 | 521 | scm_m_begin (SCM xorig, SCM env) |
0f2d19dd | 522 | { |
6cb702da | 523 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 524 | xorig, scm_s_expression, s_begin); |
3a3111a8 | 525 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
0f2d19dd JB |
526 | } |
527 | ||
b8229a3b | 528 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
2f0d1375 | 529 | SCM_GLOBAL_SYMBOL(scm_sym_if, s_if); |
1cc91f1b | 530 | |
0f2d19dd | 531 | SCM |
6e8d25a6 | 532 | scm_m_if (SCM xorig, SCM env) |
0f2d19dd JB |
533 | { |
534 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 535 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
3a3111a8 | 536 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
0f2d19dd JB |
537 | } |
538 | ||
539 | ||
89efbff4 MD |
540 | /* Will go into the RnRS module when Guile is factorized. |
541 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
542 | const char scm_s_set_x[] = "set!"; | |
543 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 544 | |
0f2d19dd | 545 | SCM |
6e8d25a6 | 546 | scm_m_set_x (SCM xorig, SCM env) |
0f2d19dd | 547 | { |
6dbd0af5 | 548 | SCM x = SCM_CDR (xorig); |
89efbff4 | 549 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
cabe682c | 550 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 | 551 | xorig, scm_s_variable, scm_s_set_x); |
3a3111a8 | 552 | return scm_cons (SCM_IM_SET_X, x); |
0f2d19dd JB |
553 | } |
554 | ||
555 | ||
b8229a3b | 556 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
2f0d1375 | 557 | SCM_GLOBAL_SYMBOL(scm_sym_and, s_and); |
1cc91f1b | 558 | |
0f2d19dd | 559 | SCM |
6e8d25a6 | 560 | scm_m_and (SCM xorig, SCM env) |
0f2d19dd JB |
561 | { |
562 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 563 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd | 564 | if (len >= 1) |
3a3111a8 | 565 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); |
0f2d19dd JB |
566 | else |
567 | return SCM_BOOL_T; | |
568 | } | |
569 | ||
b8229a3b | 570 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
2f0d1375 | 571 | SCM_GLOBAL_SYMBOL(scm_sym_or,s_or); |
1cc91f1b | 572 | |
0f2d19dd | 573 | SCM |
6e8d25a6 | 574 | scm_m_or (SCM xorig, SCM env) |
0f2d19dd JB |
575 | { |
576 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 577 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd | 578 | if (len >= 1) |
3a3111a8 | 579 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); |
0f2d19dd JB |
580 | else |
581 | return SCM_BOOL_F; | |
582 | } | |
583 | ||
584 | ||
b8229a3b | 585 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
2f0d1375 | 586 | SCM_GLOBAL_SYMBOL(scm_sym_case, s_case); |
1cc91f1b | 587 | |
0f2d19dd | 588 | SCM |
6e8d25a6 | 589 | scm_m_case (SCM xorig, SCM env) |
0f2d19dd | 590 | { |
26d5b9b4 | 591 | SCM proc, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
b8229a3b | 592 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
593 | while (SCM_NIMP (x = SCM_CDR (x))) |
594 | { | |
595 | proc = SCM_CAR (x); | |
b8229a3b | 596 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da | 597 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
4567ed78 DH |
598 | || (SCM_EQ_P (scm_sym_else, SCM_CAR (proc)) |
599 | && SCM_NULLP (SCM_CDR (x))), | |
b8229a3b | 600 | xorig, scm_s_clauses, s_case); |
0f2d19dd | 601 | } |
3a3111a8 | 602 | return scm_cons (SCM_IM_CASE, cdrx); |
0f2d19dd JB |
603 | } |
604 | ||
605 | ||
b8229a3b | 606 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
2f0d1375 | 607 | SCM_GLOBAL_SYMBOL(scm_sym_cond, s_cond); |
b8229a3b | 608 | |
1cc91f1b | 609 | |
0f2d19dd | 610 | SCM |
6e8d25a6 | 611 | scm_m_cond (SCM xorig, SCM env) |
0f2d19dd | 612 | { |
26d5b9b4 | 613 | SCM arg1, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
0f2d19dd | 614 | int len = scm_ilength (x); |
b8229a3b | 615 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
616 | while (SCM_NIMP (x)) |
617 | { | |
618 | arg1 = SCM_CAR (x); | |
619 | len = scm_ilength (arg1); | |
b8229a3b | 620 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
cf498326 | 621 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (arg1))) |
0f2d19dd | 622 | { |
6cb702da | 623 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 624 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 625 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd | 626 | } |
cf498326 | 627 | if (len >= 2 && SCM_EQ_P (scm_sym_arrow, SCM_CAR (SCM_CDR (arg1)))) |
6cb702da | 628 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 629 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
630 | x = SCM_CDR (x); |
631 | } | |
3a3111a8 | 632 | return scm_cons (SCM_IM_COND, cdrx); |
0f2d19dd JB |
633 | } |
634 | ||
b8229a3b | 635 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
2f0d1375 | 636 | SCM_GLOBAL_SYMBOL(scm_sym_lambda, s_lambda); |
1cc91f1b | 637 | |
0f2d19dd | 638 | SCM |
6e8d25a6 | 639 | scm_m_lambda (SCM xorig, SCM env) |
0f2d19dd JB |
640 | { |
641 | SCM proc, x = SCM_CDR (xorig); | |
26d5b9b4 | 642 | if (scm_ilength (x) < 2) |
0f2d19dd JB |
643 | goto badforms; |
644 | proc = SCM_CAR (x); | |
33b97402 MD |
645 | if (SCM_NULLP (proc)) |
646 | goto memlambda; | |
cf498326 | 647 | if (SCM_EQ_P (SCM_IM_LET, proc)) /* named let */ |
26d5b9b4 | 648 | goto memlambda; |
33b97402 MD |
649 | if (SCM_IMP (proc)) |
650 | goto badforms; | |
651 | if (SCM_SYMBOLP (proc)) | |
652 | goto memlambda; | |
653 | if (SCM_NCONSP (proc)) | |
654 | goto badforms; | |
655 | while (SCM_NIMP (proc)) | |
0f2d19dd | 656 | { |
33b97402 MD |
657 | if (SCM_NCONSP (proc)) |
658 | { | |
0f2d19dd | 659 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
660 | goto badforms; |
661 | else | |
662 | goto memlambda; | |
663 | } | |
0c95b57d | 664 | if (!SCM_SYMBOLP (SCM_CAR (proc))) |
0f2d19dd JB |
665 | goto badforms; |
666 | proc = SCM_CDR (proc); | |
667 | } | |
ff467021 | 668 | if (SCM_NNULLP (proc)) |
26d5b9b4 MD |
669 | { |
670 | badforms: | |
671 | scm_wta (xorig, scm_s_formals, s_lambda); | |
672 | } | |
673 | ||
674 | memlambda: | |
3a3111a8 MD |
675 | return scm_cons2 (SCM_IM_LAMBDA, SCM_CAR (x), |
676 | scm_m_body (SCM_IM_LAMBDA, SCM_CDR (x), s_lambda)); | |
0f2d19dd JB |
677 | } |
678 | ||
b8229a3b | 679 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
2f0d1375 | 680 | SCM_GLOBAL_SYMBOL(scm_sym_letstar,s_letstar); |
0f2d19dd | 681 | |
1cc91f1b | 682 | |
0f2d19dd | 683 | SCM |
6e8d25a6 | 684 | scm_m_letstar (SCM xorig, SCM env) |
0f2d19dd JB |
685 | { |
686 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
687 | int len = scm_ilength (x); | |
b8229a3b | 688 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 689 | proc = SCM_CAR (x); |
b8229a3b | 690 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
ff467021 | 691 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
692 | { |
693 | arg1 = SCM_CAR (proc); | |
b8229a3b | 694 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
0c95b57d | 695 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, s_letstar); |
0f2d19dd | 696 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 697 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
698 | proc = SCM_CDR (proc); |
699 | } | |
700 | x = scm_cons (vars, SCM_CDR (x)); | |
26d5b9b4 | 701 | |
3a3111a8 MD |
702 | return scm_cons2 (SCM_IM_LETSTAR, SCM_CAR (x), |
703 | scm_m_body (SCM_IM_LETSTAR, SCM_CDR (x), s_letstar)); | |
0f2d19dd JB |
704 | } |
705 | ||
706 | /* DO gets the most radically altered syntax | |
707 | (do ((<var1> <init1> <step1>) | |
708 | (<var2> <init2>) | |
709 | ... ) | |
710 | (<test> <return>) | |
711 | <body>) | |
712 | ;; becomes | |
713 | (do_mem (varn ... var2 var1) | |
714 | (<init1> <init2> ... <initn>) | |
715 | (<test> <return>) | |
716 | (<body>) | |
717 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
718 | */ | |
719 | ||
b8229a3b | 720 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
2f0d1375 | 721 | SCM_GLOBAL_SYMBOL(scm_sym_do, s_do); |
1cc91f1b | 722 | |
0f2d19dd | 723 | SCM |
6e8d25a6 | 724 | scm_m_do (SCM xorig, SCM env) |
0f2d19dd JB |
725 | { |
726 | SCM x = SCM_CDR (xorig), arg1, proc; | |
727 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
728 | SCM *initloc = &inits, *steploc = &steps; | |
729 | int len = scm_ilength (x); | |
6cb702da | 730 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 731 | proc = SCM_CAR (x); |
6cb702da | 732 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
ff467021 | 733 | while (SCM_NIMP(proc)) |
0f2d19dd JB |
734 | { |
735 | arg1 = SCM_CAR (proc); | |
736 | len = scm_ilength (arg1); | |
6cb702da | 737 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
0c95b57d | 738 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, "do"); |
0f2d19dd JB |
739 | /* vars reversed here, inits and steps reversed at evaluation */ |
740 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
741 | arg1 = SCM_CDR (arg1); | |
742 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 743 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
744 | arg1 = SCM_CDR (arg1); |
745 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 746 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
747 | proc = SCM_CDR (proc); |
748 | } | |
749 | x = SCM_CDR (x); | |
6cb702da | 750 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
751 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
752 | x = scm_cons2 (vars, inits, x); | |
3a3111a8 | 753 | return scm_cons (SCM_IM_DO, x); |
0f2d19dd JB |
754 | } |
755 | ||
6dbd0af5 MD |
756 | /* evalcar is small version of inline EVALCAR when we don't care about |
757 | * speed | |
758 | */ | |
759 | #define evalcar scm_eval_car | |
0f2d19dd | 760 | |
1cc91f1b | 761 | |
1bbd0b84 | 762 | static SCM iqq (SCM form, SCM env, int depth); |
1cc91f1b | 763 | |
b8229a3b | 764 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
2f0d1375 | 765 | SCM_GLOBAL_SYMBOL(scm_sym_quasiquote, s_quasiquote); |
b8229a3b MS |
766 | |
767 | SCM | |
6e8d25a6 | 768 | scm_m_quasiquote (SCM xorig, SCM env) |
b8229a3b MS |
769 | { |
770 | SCM x = SCM_CDR (xorig); | |
771 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
772 | return iqq (SCM_CAR (x), env, 1); | |
773 | } | |
774 | ||
775 | ||
0f2d19dd | 776 | static SCM |
1bbd0b84 | 777 | iqq (SCM form,SCM env,int depth) |
0f2d19dd JB |
778 | { |
779 | SCM tmp; | |
780 | int edepth = depth; | |
ff467021 JB |
781 | if (SCM_IMP(form)) |
782 | return form; | |
0f2d19dd JB |
783 | if (SCM_VECTORP (form)) |
784 | { | |
b5c2579a | 785 | long i = SCM_VECTOR_LENGTH (form); |
0f2d19dd JB |
786 | SCM *data = SCM_VELTS (form); |
787 | tmp = SCM_EOL; | |
788 | for (; --i >= 0;) | |
789 | tmp = scm_cons (data[i], tmp); | |
790 | return scm_vector (iqq (tmp, env, depth)); | |
791 | } | |
ff467021 JB |
792 | if (SCM_NCONSP(form)) |
793 | return form; | |
0f2d19dd | 794 | tmp = SCM_CAR (form); |
cf498326 | 795 | if (SCM_EQ_P (scm_sym_quasiquote, tmp)) |
0f2d19dd JB |
796 | { |
797 | depth++; | |
798 | goto label; | |
799 | } | |
cf498326 | 800 | if (SCM_EQ_P (scm_sym_unquote, tmp)) |
0f2d19dd JB |
801 | { |
802 | --depth; | |
803 | label: | |
804 | form = SCM_CDR (form); | |
0c95b57d GB |
805 | SCM_ASSERT (SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
806 | form, SCM_ARG1, s_quasiquote); | |
0f2d19dd JB |
807 | if (0 == depth) |
808 | return evalcar (form, env); | |
809 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
810 | } | |
cf498326 | 811 | if (SCM_NIMP (tmp) && (SCM_EQ_P (scm_sym_uq_splicing, SCM_CAR (tmp)))) |
0f2d19dd JB |
812 | { |
813 | tmp = SCM_CDR (tmp); | |
814 | if (0 == --edepth) | |
815 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
816 | } | |
817 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
818 | } | |
819 | ||
820 | /* Here are acros which return values rather than code. */ | |
821 | ||
a570e93a MD |
822 | SCM_SYNTAX (s_delay, "delay", scm_makmmacro, scm_m_delay); |
823 | SCM_GLOBAL_SYMBOL (scm_sym_delay, s_delay); | |
1cc91f1b | 824 | |
0f2d19dd | 825 | SCM |
6e8d25a6 | 826 | scm_m_delay (SCM xorig, SCM env) |
0f2d19dd | 827 | { |
6cb702da | 828 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
a570e93a | 829 | return scm_cons2 (SCM_IM_DELAY, SCM_EOL, SCM_CDR (xorig)); |
0f2d19dd JB |
830 | } |
831 | ||
1cc91f1b | 832 | |
b8229a3b | 833 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
2f0d1375 | 834 | SCM_GLOBAL_SYMBOL(scm_sym_define, s_define); |
1cc91f1b | 835 | |
0f2d19dd | 836 | SCM |
6e8d25a6 | 837 | scm_m_define (SCM x, SCM env) |
0f2d19dd JB |
838 | { |
839 | SCM proc, arg1 = x; | |
840 | x = SCM_CDR (x); | |
b8229a3b | 841 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
842 | proc = SCM_CAR (x); |
843 | x = SCM_CDR (x); | |
0c95b57d | 844 | while (SCM_CONSP (proc)) |
0f2d19dd | 845 | { /* nested define syntax */ |
2f0d1375 | 846 | x = scm_cons (scm_cons2 (scm_sym_lambda, SCM_CDR (proc), x), SCM_EOL); |
0f2d19dd JB |
847 | proc = SCM_CAR (proc); |
848 | } | |
0c95b57d | 849 | SCM_ASSYNT (SCM_SYMBOLP (proc), |
b8229a3b MS |
850 | arg1, scm_s_variable, s_define); |
851 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
852 | if (SCM_TOP_LEVEL (env)) |
853 | { | |
854 | x = evalcar (x, env); | |
6dbd0af5 | 855 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
856 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
857 | { | |
858 | arg1 = x; | |
859 | proc: | |
860 | if (SCM_CLOSUREP (arg1) | |
861 | /* Only the first definition determines the name. */ | |
cf498326 | 862 | && SCM_FALSEP (scm_procedure_property (arg1, scm_sym_name))) |
2f0d1375 | 863 | scm_set_procedure_property_x (arg1, scm_sym_name, proc); |
80ea260c | 864 | else if (SCM_TYP16 (arg1) == scm_tc16_macro |
cf498326 | 865 | && !SCM_EQ_P (SCM_CDR (arg1), arg1)) |
80ea260c MD |
866 | { |
867 | arg1 = SCM_CDR (arg1); | |
868 | goto proc; | |
869 | } | |
870 | } | |
6dbd0af5 | 871 | #endif |
6cb702da | 872 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
a23afe53 | 873 | SCM_SETCDR (arg1, x); |
0f2d19dd | 874 | #ifdef SICP |
2f0d1375 | 875 | return scm_cons2 (scm_sym_quote, SCM_CAR (arg1), SCM_EOL); |
0f2d19dd JB |
876 | #else |
877 | return SCM_UNSPECIFIED; | |
878 | #endif | |
879 | } | |
880 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
881 | } | |
6dbd0af5 | 882 | |
0f2d19dd JB |
883 | /* end of acros */ |
884 | ||
26d5b9b4 | 885 | static SCM |
6e8d25a6 | 886 | scm_m_letrec1 (SCM op, SCM imm, SCM xorig, SCM env) |
0f2d19dd JB |
887 | { |
888 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
3db4adfc | 889 | char *what = SCM_SYMBOL_CHARS (SCM_CAR (xorig)); |
0f2d19dd JB |
890 | SCM x = cdrx, proc, arg1; /* structure traversers */ |
891 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
892 | ||
0f2d19dd | 893 | proc = SCM_CAR (x); |
ab66ae47 | 894 | SCM_ASSYNT (scm_ilength (proc) >= 1, xorig, scm_s_bindings, what); |
0f2d19dd JB |
895 | do |
896 | { | |
897 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
898 | arg1 = SCM_CAR (proc); | |
ab66ae47 DH |
899 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, what); |
900 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, what); | |
0f2d19dd JB |
901 | vars = scm_cons (SCM_CAR (arg1), vars); |
902 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 903 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd | 904 | } |
ff467021 | 905 | while (SCM_NIMP (proc = SCM_CDR (proc))); |
26d5b9b4 | 906 | |
3a3111a8 MD |
907 | return scm_cons2 (op, vars, |
908 | scm_cons (inits, scm_m_body (imm, SCM_CDR (x), what))); | |
0f2d19dd JB |
909 | } |
910 | ||
26d5b9b4 | 911 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
2f0d1375 | 912 | SCM_GLOBAL_SYMBOL(scm_sym_letrec, s_letrec); |
26d5b9b4 MD |
913 | |
914 | SCM | |
6e8d25a6 | 915 | scm_m_letrec (SCM xorig, SCM env) |
26d5b9b4 MD |
916 | { |
917 | SCM x = SCM_CDR (xorig); | |
918 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_letrec); | |
919 | ||
920 | if (SCM_NULLP (SCM_CAR (x))) /* null binding, let* faster */ | |
3a3111a8 MD |
921 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), SCM_EOL, |
922 | scm_m_body (SCM_IM_LETREC, | |
923 | SCM_CDR (x), | |
924 | s_letrec)), | |
26d5b9b4 MD |
925 | env); |
926 | else | |
927 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LETREC, xorig, env); | |
928 | } | |
1cc91f1b | 929 | |
b8229a3b | 930 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
2f0d1375 | 931 | SCM_GLOBAL_SYMBOL(scm_sym_let, s_let); |
b8229a3b | 932 | |
0f2d19dd | 933 | SCM |
6e8d25a6 | 934 | scm_m_let (SCM xorig, SCM env) |
0f2d19dd JB |
935 | { |
936 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
937 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
938 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
939 | ||
b8229a3b | 940 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
941 | proc = SCM_CAR (x); |
942 | if (SCM_NULLP (proc) | |
0c95b57d | 943 | || (SCM_CONSP (proc) |
26d5b9b4 MD |
944 | && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) |
945 | { | |
946 | /* null or single binding, let* is faster */ | |
3a3111a8 MD |
947 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), proc, |
948 | scm_m_body (SCM_IM_LET, | |
949 | SCM_CDR (x), | |
950 | s_let)), | |
26d5b9b4 MD |
951 | env); |
952 | } | |
953 | ||
b8229a3b | 954 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
26d5b9b4 MD |
955 | if (SCM_CONSP (proc)) |
956 | { | |
957 | /* plain let, proc is <bindings> */ | |
958 | return scm_m_letrec1 (SCM_IM_LET, SCM_IM_LET, xorig, env); | |
959 | } | |
960 | ||
0f2d19dd | 961 | if (!SCM_SYMBOLP (proc)) |
b8229a3b | 962 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
963 | name = proc; /* named let, build equiv letrec */ |
964 | x = SCM_CDR (x); | |
b8229a3b | 965 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
26d5b9b4 | 966 | proc = SCM_CAR (x); /* bindings list */ |
b8229a3b | 967 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
ff467021 | 968 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
969 | { /* vars and inits both in order */ |
970 | arg1 = SCM_CAR (proc); | |
b8229a3b | 971 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
0c95b57d | 972 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 973 | xorig, scm_s_variable, s_let); |
0f2d19dd | 974 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 975 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 976 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 977 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
978 | proc = SCM_CDR (proc); |
979 | } | |
26d5b9b4 | 980 | |
2f0d1375 | 981 | proc = scm_cons2 (scm_sym_lambda, vars, |
26d5b9b4 | 982 | scm_m_body (SCM_IM_LET, SCM_CDR (x), "let")); |
2f0d1375 | 983 | proc = scm_cons2 (scm_sym_let, scm_cons (scm_cons2 (name, proc, SCM_EOL), |
26d5b9b4 MD |
984 | SCM_EOL), |
985 | scm_acons (name, inits, SCM_EOL)); | |
986 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LET, proc, env); | |
0f2d19dd JB |
987 | } |
988 | ||
989 | ||
81123e6d MD |
990 | SCM_SYNTAX (s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
991 | SCM_GLOBAL_SYMBOL (scm_sym_atapply, s_atapply); | |
992 | SCM_GLOBAL_SYMBOL (scm_sym_apply, s_atapply + 1); | |
1cc91f1b | 993 | |
0f2d19dd | 994 | SCM |
6e8d25a6 | 995 | scm_m_apply (SCM xorig, SCM env) |
0f2d19dd | 996 | { |
6cb702da | 997 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 998 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
999 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1000 | } | |
1001 | ||
b8229a3b MS |
1002 | |
1003 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
2f0d1375 | 1004 | SCM_GLOBAL_SYMBOL(scm_sym_atcall_cc,s_atcall_cc); |
0f2d19dd | 1005 | |
1cc91f1b | 1006 | |
0f2d19dd | 1007 | SCM |
6e8d25a6 | 1008 | scm_m_cont (SCM xorig, SCM env) |
0f2d19dd | 1009 | { |
6cb702da | 1010 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1011 | xorig, scm_s_expression, s_atcall_cc); |
3a3111a8 | 1012 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
0f2d19dd JB |
1013 | } |
1014 | ||
73b64342 MD |
1015 | /* Multi-language support */ |
1016 | ||
43a912cf MD |
1017 | SCM scm_lisp_nil; |
1018 | SCM scm_lisp_t; | |
73b64342 MD |
1019 | |
1020 | SCM_SYNTAX (s_nil_cond, "nil-cond", scm_makmmacro, scm_m_nil_cond); | |
1021 | ||
1022 | SCM | |
1023 | scm_m_nil_cond (SCM xorig, SCM env) | |
1024 | { | |
1025 | int len = scm_ilength (SCM_CDR (xorig)); | |
1026 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1027 | scm_s_expression, "nil-cond"); | |
1028 | return scm_cons (SCM_IM_NIL_COND, SCM_CDR (xorig)); | |
1029 | } | |
1030 | ||
1031 | SCM_SYNTAX (s_nil_ify, "nil-ify", scm_makmmacro, scm_m_nil_ify); | |
1032 | ||
1033 | SCM | |
1034 | scm_m_nil_ify (SCM xorig, SCM env) | |
1035 | { | |
1036 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1037 | xorig, scm_s_expression, "nil-ify"); | |
1038 | return scm_cons (SCM_IM_NIL_IFY, SCM_CDR (xorig)); | |
1039 | } | |
1040 | ||
1041 | SCM_SYNTAX (s_t_ify, "t-ify", scm_makmmacro, scm_m_t_ify); | |
1042 | ||
1043 | SCM | |
1044 | scm_m_t_ify (SCM xorig, SCM env) | |
1045 | { | |
1046 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1047 | xorig, scm_s_expression, "t-ify"); | |
1048 | return scm_cons (SCM_IM_T_IFY, SCM_CDR (xorig)); | |
1049 | } | |
1050 | ||
1051 | SCM_SYNTAX (s_0_cond, "0-cond", scm_makmmacro, scm_m_0_cond); | |
1052 | ||
1053 | SCM | |
1054 | scm_m_0_cond (SCM xorig, SCM env) | |
1055 | { | |
1056 | int len = scm_ilength (SCM_CDR (xorig)); | |
1057 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1058 | scm_s_expression, "0-cond"); | |
1059 | return scm_cons (SCM_IM_0_COND, SCM_CDR (xorig)); | |
1060 | } | |
1061 | ||
1062 | SCM_SYNTAX (s_0_ify, "0-ify", scm_makmmacro, scm_m_0_ify); | |
1063 | ||
1064 | SCM | |
1065 | scm_m_0_ify (SCM xorig, SCM env) | |
1066 | { | |
1067 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1068 | xorig, scm_s_expression, "0-ify"); | |
1069 | return scm_cons (SCM_IM_0_IFY, SCM_CDR (xorig)); | |
1070 | } | |
1071 | ||
1072 | SCM_SYNTAX (s_1_ify, "1-ify", scm_makmmacro, scm_m_1_ify); | |
1073 | ||
1074 | SCM | |
1075 | scm_m_1_ify (SCM xorig, SCM env) | |
1076 | { | |
1077 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1078 | xorig, scm_s_expression, "1-ify"); | |
1079 | return scm_cons (SCM_IM_1_IFY, SCM_CDR (xorig)); | |
1080 | } | |
1081 | ||
1082 | SCM_SYNTAX (s_atfop, "@fop", scm_makmmacro, scm_m_atfop); | |
1083 | ||
1084 | SCM | |
1085 | scm_m_atfop (SCM xorig, SCM env) | |
1086 | { | |
1087 | SCM x = SCM_CDR (xorig), vcell; | |
1088 | SCM_ASSYNT (scm_ilength (x) >= 1, xorig, scm_s_expression, "@fop"); | |
1089 | vcell = scm_symbol_fref (SCM_CAR (x)); | |
0c95b57d | 1090 | SCM_ASSYNT (SCM_CONSP (vcell), x, |
73b64342 | 1091 | "Symbol's function definition is void", NULL); |
3201d763 | 1092 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (vcell) + scm_tc3_cons_gloc); |
73b64342 MD |
1093 | return x; |
1094 | } | |
1095 | ||
1096 | SCM_SYNTAX (s_atbind, "@bind", scm_makmmacro, scm_m_atbind); | |
1097 | ||
1098 | SCM | |
1099 | scm_m_atbind (SCM xorig, SCM env) | |
1100 | { | |
1101 | SCM x = SCM_CDR (xorig); | |
1102 | SCM_ASSYNT (scm_ilength (x) > 1, xorig, scm_s_expression, "@bind"); | |
1103 | ||
1104 | if (SCM_IMP (env)) | |
1105 | env = SCM_BOOL_F; | |
1106 | else | |
1107 | { | |
1108 | while (SCM_NIMP (SCM_CDR (env))) | |
1109 | env = SCM_CDR (env); | |
1110 | env = SCM_CAR (env); | |
1111 | if (SCM_CONSP (env)) | |
1112 | env = SCM_BOOL_F; | |
1113 | } | |
1114 | ||
1115 | x = SCM_CAR (x); | |
1116 | while (SCM_NIMP (x)) | |
1117 | { | |
3201d763 | 1118 | SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (scm_sym2vcell (SCM_CAR (x), env, SCM_BOOL_T)) + scm_tc3_cons_gloc); |
73b64342 MD |
1119 | x = SCM_CDR (x); |
1120 | } | |
1121 | return scm_cons (SCM_IM_BIND, SCM_CDR (xorig)); | |
1122 | } | |
73b64342 | 1123 | |
26d5b9b4 MD |
1124 | SCM |
1125 | scm_m_expand_body (SCM xorig, SCM env) | |
1126 | { | |
1127 | SCM form, x = SCM_CDR (xorig), defs = SCM_EOL; | |
1128 | char *what = SCM_ISYMCHARS (SCM_CAR (xorig)) + 2; | |
1129 | ||
1130 | while (SCM_NIMP (x)) | |
1131 | { | |
1132 | form = SCM_CAR (x); | |
1133 | if (SCM_IMP (form) || SCM_NCONSP (form)) | |
1134 | break; | |
1135 | if (SCM_IMP (SCM_CAR (form))) | |
1136 | break; | |
1137 | if (!SCM_SYMBOLP (SCM_CAR (form))) | |
1138 | break; | |
1139 | ||
3a3111a8 MD |
1140 | form = scm_macroexp (scm_cons_source (form, |
1141 | SCM_CAR (form), | |
1142 | SCM_CDR (form)), | |
1143 | env); | |
26d5b9b4 | 1144 | |
cf498326 | 1145 | if (SCM_EQ_P (SCM_IM_DEFINE, SCM_CAR (form))) |
26d5b9b4 MD |
1146 | { |
1147 | defs = scm_cons (SCM_CDR (form), defs); | |
1148 | x = SCM_CDR(x); | |
1149 | } | |
1150 | else if (SCM_NIMP(defs)) | |
1151 | { | |
1152 | break; | |
1153 | } | |
cf498326 | 1154 | else if (SCM_EQ_P (SCM_IM_BEGIN, SCM_CAR (form))) |
26d5b9b4 MD |
1155 | { |
1156 | x = scm_append (scm_cons2 (SCM_CDR (form), SCM_CDR (x), SCM_EOL)); | |
1157 | } | |
1158 | else | |
1159 | { | |
1160 | x = scm_cons (form, SCM_CDR(x)); | |
1161 | break; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | SCM_ASSYNT (SCM_NIMP (x), SCM_CDR (xorig), scm_s_body, what); | |
1166 | if (SCM_NIMP (defs)) | |
1167 | { | |
1168 | x = scm_cons (scm_m_letrec1 (SCM_IM_LETREC, | |
1169 | SCM_IM_DEFINE, | |
2f0d1375 | 1170 | scm_cons2 (scm_sym_define, defs, x), |
26d5b9b4 MD |
1171 | env), |
1172 | SCM_EOL); | |
1173 | } | |
1174 | ||
1175 | SCM_DEFER_INTS; | |
1176 | SCM_SETCAR (xorig, SCM_CAR (x)); | |
1177 | SCM_SETCDR (xorig, SCM_CDR (x)); | |
1178 | SCM_ALLOW_INTS; | |
1179 | ||
1180 | return xorig; | |
1181 | } | |
1182 | ||
1183 | SCM | |
1184 | scm_macroexp (SCM x, SCM env) | |
1185 | { | |
1186 | SCM res, proc; | |
1187 | ||
1188 | /* Don't bother to produce error messages here. We get them when we | |
1189 | eventually execute the code for real. */ | |
1190 | ||
1191 | macro_tail: | |
44d3cb0d | 1192 | if (!SCM_SYMBOLP (SCM_CAR (x))) |
26d5b9b4 MD |
1193 | return x; |
1194 | ||
1195 | #ifdef USE_THREADS | |
1196 | { | |
1197 | SCM *proc_ptr = scm_lookupcar1 (x, env, 0); | |
1198 | if (proc_ptr == NULL) | |
1199 | { | |
1200 | /* We have lost the race. */ | |
1201 | goto macro_tail; | |
1202 | } | |
1203 | proc = *proc_ptr; | |
1204 | } | |
1205 | #else | |
1206 | proc = *scm_lookupcar (x, env, 0); | |
1207 | #endif | |
1208 | ||
1209 | /* Only handle memoizing macros. `Acros' and `macros' are really | |
1210 | special forms and should not be evaluated here. */ | |
1211 | ||
1212 | if (SCM_IMP (proc) | |
1213 | || scm_tc16_macro != SCM_TYP16 (proc) | |
445f675c | 1214 | || (SCM_CELL_WORD_0 (proc) >> 16) != 2) |
26d5b9b4 MD |
1215 | return x; |
1216 | ||
1217 | unmemocar (x, env); | |
1218 | res = scm_apply (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1219 | ||
1220 | if (scm_ilength (res) <= 0) | |
1221 | res = scm_cons2 (SCM_IM_BEGIN, res, SCM_EOL); | |
1222 | ||
26d5b9b4 MD |
1223 | SCM_DEFER_INTS; |
1224 | SCM_SETCAR (x, SCM_CAR (res)); | |
1225 | SCM_SETCDR (x, SCM_CDR (res)); | |
1226 | SCM_ALLOW_INTS; | |
1227 | ||
1228 | goto macro_tail; | |
1229 | } | |
73b64342 | 1230 | |
6dbd0af5 MD |
1231 | /* scm_unmemocopy takes a memoized expression together with its |
1232 | * environment and rewrites it to its original form. Thus, it is the | |
1233 | * inversion of the rewrite rules above. The procedure is not | |
1234 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1235 | * code of a closure, in scm_procedure_source, in display_frame when |
1236 | * generating the source for a stackframe in a backtrace, and in | |
1237 | * display_expression. | |
6dbd0af5 MD |
1238 | */ |
1239 | ||
26d5b9b4 MD |
1240 | /* We should introduce an anti-macro interface so that it is possible |
1241 | * to plug in transformers in both directions from other compilation | |
1242 | * units. unmemocopy could then dispatch to anti-macro transformers. | |
1243 | * (Those transformers could perhaps be written in slightly more | |
1244 | * readable style... :) | |
1245 | */ | |
1246 | ||
f1267706 | 1247 | #define SCM_BIT8(x) (127 & SCM_UNPACK (x)) |
c209c88e | 1248 | |
6dbd0af5 | 1249 | static SCM |
1bbd0b84 | 1250 | unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1251 | { |
1252 | SCM ls, z; | |
1253 | #ifdef DEBUG_EXTENSIONS | |
1254 | SCM p; | |
1255 | #endif | |
1256 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1257 | return x; | |
1258 | #ifdef DEBUG_EXTENSIONS | |
1259 | p = scm_whash_lookup (scm_source_whash, x); | |
1260 | #endif | |
1261 | switch (SCM_TYP7 (x)) | |
1262 | { | |
c209c88e | 1263 | case SCM_BIT8(SCM_IM_AND): |
2f0d1375 | 1264 | ls = z = scm_cons (scm_sym_and, SCM_UNSPECIFIED); |
6dbd0af5 | 1265 | break; |
c209c88e | 1266 | case SCM_BIT8(SCM_IM_BEGIN): |
2f0d1375 | 1267 | ls = z = scm_cons (scm_sym_begin, SCM_UNSPECIFIED); |
6dbd0af5 | 1268 | break; |
c209c88e | 1269 | case SCM_BIT8(SCM_IM_CASE): |
2f0d1375 | 1270 | ls = z = scm_cons (scm_sym_case, SCM_UNSPECIFIED); |
6dbd0af5 | 1271 | break; |
c209c88e | 1272 | case SCM_BIT8(SCM_IM_COND): |
2f0d1375 | 1273 | ls = z = scm_cons (scm_sym_cond, SCM_UNSPECIFIED); |
6dbd0af5 | 1274 | break; |
c209c88e | 1275 | case SCM_BIT8(SCM_IM_DO): |
2f0d1375 | 1276 | ls = scm_cons (scm_sym_do, SCM_UNSPECIFIED); |
6dbd0af5 | 1277 | goto transform; |
c209c88e | 1278 | case SCM_BIT8(SCM_IM_IF): |
2f0d1375 | 1279 | ls = z = scm_cons (scm_sym_if, SCM_UNSPECIFIED); |
6dbd0af5 | 1280 | break; |
c209c88e | 1281 | case SCM_BIT8(SCM_IM_LET): |
2f0d1375 | 1282 | ls = scm_cons (scm_sym_let, SCM_UNSPECIFIED); |
6dbd0af5 | 1283 | goto transform; |
c209c88e | 1284 | case SCM_BIT8(SCM_IM_LETREC): |
6dbd0af5 MD |
1285 | { |
1286 | SCM f, v, e, s; | |
2f0d1375 | 1287 | ls = scm_cons (scm_sym_letrec, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1288 | transform: |
1289 | x = SCM_CDR (x); | |
26d5b9b4 | 1290 | /* binding names */ |
6dbd0af5 MD |
1291 | f = v = SCM_CAR (x); |
1292 | x = SCM_CDR (x); | |
e2806c10 | 1293 | z = EXTEND_ENV (f, SCM_EOL, env); |
26d5b9b4 | 1294 | /* inits */ |
6dbd0af5 | 1295 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
cf498326 | 1296 | SCM_EQ_P (SCM_CAR (ls), scm_sym_letrec) ? z : env)); |
6dbd0af5 | 1297 | env = z; |
26d5b9b4 | 1298 | /* increments */ |
cf498326 | 1299 | s = SCM_EQ_P (SCM_CAR (ls), scm_sym_do) |
6dbd0af5 MD |
1300 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) |
1301 | : f; | |
26d5b9b4 | 1302 | /* build transformed binding list */ |
6dbd0af5 | 1303 | z = SCM_EOL; |
1bd07992 | 1304 | while (SCM_NIMP (v)) |
6dbd0af5 MD |
1305 | { |
1306 | z = scm_acons (SCM_CAR (v), | |
1307 | scm_cons (SCM_CAR (e), | |
cf498326 | 1308 | SCM_EQ_P (SCM_CAR (s), SCM_CAR (v)) |
6dbd0af5 MD |
1309 | ? SCM_EOL |
1310 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1311 | z); | |
1312 | v = SCM_CDR (v); | |
1313 | e = SCM_CDR (e); | |
1314 | s = SCM_CDR (s); | |
1315 | } | |
a23afe53 MD |
1316 | z = scm_cons (z, SCM_UNSPECIFIED); |
1317 | SCM_SETCDR (ls, z); | |
cf498326 | 1318 | if (SCM_EQ_P (SCM_CAR (ls), scm_sym_do)) |
6dbd0af5 MD |
1319 | { |
1320 | x = SCM_CDR (x); | |
26d5b9b4 | 1321 | /* test clause */ |
a23afe53 | 1322 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1323 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1324 | z = SCM_CDR (z); |
1325 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
26d5b9b4 MD |
1326 | /* body forms are now to be found in SCM_CDR (x) |
1327 | (this is how *real* code look like! :) */ | |
6dbd0af5 MD |
1328 | } |
1329 | break; | |
1330 | } | |
c209c88e | 1331 | case SCM_BIT8(SCM_IM_LETSTAR): |
6dbd0af5 MD |
1332 | { |
1333 | SCM b, y; | |
1334 | x = SCM_CDR (x); | |
1335 | b = SCM_CAR (x); | |
1336 | y = SCM_EOL; | |
1337 | if SCM_IMP (b) | |
1338 | { | |
e2806c10 | 1339 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1340 | goto letstar; |
1341 | } | |
1342 | y = z = scm_acons (SCM_CAR (b), | |
1343 | unmemocar ( | |
1344 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1345 | SCM_UNSPECIFIED); | |
e2806c10 | 1346 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1347 | b = SCM_CDR (SCM_CDR (b)); |
1348 | if (SCM_IMP (b)) | |
1349 | { | |
1350 | SCM_SETCDR (y, SCM_EOL); | |
2f0d1375 | 1351 | ls = scm_cons (scm_sym_let, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1352 | break; |
1353 | } | |
1354 | do | |
1355 | { | |
a23afe53 MD |
1356 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1357 | unmemocar ( | |
6dbd0af5 | 1358 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1359 | SCM_UNSPECIFIED)); |
1360 | z = SCM_CDR (z); | |
e2806c10 | 1361 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1362 | b = SCM_CDR (SCM_CDR (b)); |
1363 | } | |
ff467021 | 1364 | while (SCM_NIMP (b)); |
a23afe53 | 1365 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 | 1366 | letstar: |
2f0d1375 | 1367 | ls = scm_cons (scm_sym_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1368 | break; |
1369 | } | |
c209c88e | 1370 | case SCM_BIT8(SCM_IM_OR): |
2f0d1375 | 1371 | ls = z = scm_cons (scm_sym_or, SCM_UNSPECIFIED); |
6dbd0af5 | 1372 | break; |
c209c88e | 1373 | case SCM_BIT8(SCM_IM_LAMBDA): |
6dbd0af5 | 1374 | x = SCM_CDR (x); |
2f0d1375 | 1375 | ls = scm_cons (scm_sym_lambda, |
6dbd0af5 | 1376 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); |
e2806c10 | 1377 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 | 1378 | break; |
c209c88e | 1379 | case SCM_BIT8(SCM_IM_QUOTE): |
2f0d1375 | 1380 | ls = z = scm_cons (scm_sym_quote, SCM_UNSPECIFIED); |
6dbd0af5 | 1381 | break; |
c209c88e | 1382 | case SCM_BIT8(SCM_IM_SET_X): |
89efbff4 | 1383 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); |
6dbd0af5 | 1384 | break; |
c209c88e | 1385 | case SCM_BIT8(SCM_IM_DEFINE): |
6dbd0af5 MD |
1386 | { |
1387 | SCM n; | |
1388 | x = SCM_CDR (x); | |
2f0d1375 | 1389 | ls = scm_cons (scm_sym_define, |
6dbd0af5 MD |
1390 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); |
1391 | if (SCM_NNULLP (env)) | |
a23afe53 | 1392 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1393 | break; |
1394 | } | |
c209c88e | 1395 | case SCM_BIT8(SCM_MAKISYM (0)): |
6dbd0af5 MD |
1396 | z = SCM_CAR (x); |
1397 | if (!SCM_ISYMP (z)) | |
1398 | goto unmemo; | |
ff467021 | 1399 | switch (SCM_ISYMNUM (z)) |
6dbd0af5 MD |
1400 | { |
1401 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2f0d1375 | 1402 | ls = z = scm_cons (scm_sym_atapply, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1403 | goto loop; |
1404 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2f0d1375 | 1405 | ls = z = scm_cons (scm_sym_atcall_cc, SCM_UNSPECIFIED); |
6dbd0af5 | 1406 | goto loop; |
a570e93a MD |
1407 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
1408 | ls = z = scm_cons (scm_sym_delay, SCM_UNSPECIFIED); | |
1409 | x = SCM_CDR (x); | |
1410 | goto loop; | |
6dbd0af5 | 1411 | default: |
fa888178 | 1412 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1413 | } |
1414 | unmemo: | |
1415 | default: | |
1416 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1417 | SCM_UNSPECIFIED), | |
1418 | env); | |
1419 | } | |
1420 | loop: | |
1421 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 | 1422 | { |
44d3cb0d | 1423 | if (SCM_ISYMP (SCM_CAR (x))) |
26d5b9b4 MD |
1424 | /* skip body markers */ |
1425 | continue; | |
a23afe53 MD |
1426 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), |
1427 | SCM_UNSPECIFIED), | |
1428 | env)); | |
1429 | z = SCM_CDR (z); | |
1430 | } | |
1431 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1432 | #ifdef DEBUG_EXTENSIONS |
1433 | if (SCM_NFALSEP (p)) | |
1434 | scm_whash_insert (scm_source_whash, ls, p); | |
1435 | #endif | |
1436 | return ls; | |
1437 | } | |
1438 | ||
1cc91f1b | 1439 | |
6dbd0af5 | 1440 | SCM |
6e8d25a6 | 1441 | scm_unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1442 | { |
1443 | if (SCM_NNULLP (env)) | |
1444 | /* Make a copy of the lowest frame to protect it from | |
1445 | modifications by SCM_IM_DEFINE */ | |
1446 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1447 | else | |
1448 | return unmemocopy (x, env); | |
1449 | } | |
1450 | ||
cf7c17e9 | 1451 | #ifndef SCM_RECKLESS |
1cc91f1b | 1452 | |
0f2d19dd | 1453 | int |
6e8d25a6 | 1454 | scm_badargsp (SCM formals, SCM args) |
0f2d19dd | 1455 | { |
ff467021 | 1456 | while (SCM_NIMP (formals)) |
0f2d19dd | 1457 | { |
ff467021 JB |
1458 | if (SCM_NCONSP (formals)) |
1459 | return 0; | |
1460 | if (SCM_IMP(args)) | |
1461 | return 1; | |
0f2d19dd JB |
1462 | formals = SCM_CDR (formals); |
1463 | args = SCM_CDR (args); | |
1464 | } | |
1465 | return SCM_NNULLP (args) ? 1 : 0; | |
1466 | } | |
1467 | #endif | |
1468 | ||
002f1a5d MD |
1469 | static int |
1470 | scm_badformalsp (SCM closure, int n) | |
1471 | { | |
1472 | SCM formals = SCM_CAR (SCM_CODE (closure)); | |
1473 | while (SCM_NIMP (formals)) | |
1474 | { | |
1475 | if (SCM_NCONSP (formals)) | |
1476 | return 0; | |
1477 | if (n == 0) | |
1478 | return 1; | |
1479 | --n; | |
1480 | formals = SCM_CDR (formals); | |
1481 | } | |
1482 | return n; | |
1483 | } | |
0f2d19dd JB |
1484 | |
1485 | \f | |
6dbd0af5 | 1486 | SCM |
6e8d25a6 | 1487 | scm_eval_args (SCM l, SCM env, SCM proc) |
6dbd0af5 | 1488 | { |
680ed4a8 | 1489 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1490 | while (SCM_NIMP (l)) |
1491 | { | |
cf7c17e9 | 1492 | #ifdef SCM_CAUTIOUS |
44d3cb0d | 1493 | if (SCM_CONSP (l)) |
680ed4a8 MD |
1494 | { |
1495 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1496 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1497 | else |
1498 | res = EVALCELLCAR (l, env); | |
1499 | } | |
3201d763 | 1500 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1501 | { |
3201d763 DH |
1502 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1503 | if (vcell == 0) | |
680ed4a8 | 1504 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1505 | else |
1506 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1507 | } |
1508 | else | |
1509 | goto wrongnumargs; | |
1510 | #else | |
1511 | res = EVALCAR (l, env); | |
1512 | #endif | |
1513 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1514 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1515 | l = SCM_CDR (l); |
1516 | } | |
cf7c17e9 | 1517 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1518 | if (SCM_NNULLP (l)) |
1519 | { | |
1520 | wrongnumargs: | |
1521 | scm_wrong_num_args (proc); | |
1522 | } | |
1523 | #endif | |
1524 | return results; | |
6dbd0af5 | 1525 | } |
c4ac4d88 | 1526 | |
9de33deb MD |
1527 | SCM |
1528 | scm_eval_body (SCM code, SCM env) | |
1529 | { | |
1530 | SCM next; | |
1531 | again: | |
1532 | next = code; | |
1533 | while (SCM_NNULLP (next = SCM_CDR (next))) | |
1534 | { | |
1535 | if (SCM_IMP (SCM_CAR (code))) | |
1536 | { | |
1537 | if (SCM_ISYMP (SCM_CAR (code))) | |
1538 | { | |
1539 | code = scm_m_expand_body (code, env); | |
1540 | goto again; | |
1541 | } | |
1542 | } | |
1543 | else | |
1544 | SCM_XEVAL (SCM_CAR (code), env); | |
1545 | code = next; | |
1546 | } | |
1547 | return SCM_XEVALCAR (code, env); | |
1548 | } | |
1549 | ||
c4ac4d88 | 1550 | |
0f2d19dd JB |
1551 | #endif /* !DEVAL */ |
1552 | ||
6dbd0af5 MD |
1553 | |
1554 | /* SECTION: This code is specific for the debugging support. One | |
1555 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1556 | * defined. | |
1557 | */ | |
1558 | ||
1559 | #ifndef DEVAL | |
1560 | ||
1561 | #define SCM_APPLY scm_apply | |
1562 | #define PREP_APPLY(proc, args) | |
1563 | #define ENTER_APPLY | |
1564 | #define RETURN(x) return x; | |
b7ff98dd MD |
1565 | #ifdef STACK_CHECKING |
1566 | #ifndef NO_CEVAL_STACK_CHECKING | |
1567 | #define EVAL_STACK_CHECKING | |
1568 | #endif | |
6dbd0af5 MD |
1569 | #endif |
1570 | ||
1571 | #else /* !DEVAL */ | |
1572 | ||
0f2d19dd JB |
1573 | #undef SCM_CEVAL |
1574 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1575 | #undef SCM_APPLY | |
1576 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1577 | #undef PREP_APPLY |
1578 | #define PREP_APPLY(p, l) \ | |
1579 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1580 | #undef ENTER_APPLY | |
1581 | #define ENTER_APPLY \ | |
d3a6bc94 | 1582 | do { \ |
b7ff98dd | 1583 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1584 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1585 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1586 | {\ |
156dcb09 | 1587 | SCM tmp, tail = SCM_BOOL(SCM_TRACED_FRAME_P (debug)); \ |
c6a4fbce | 1588 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1589 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1590 | {\ |
c0ab1b8d | 1591 | tmp = scm_make_debugobj (&debug);\ |
2f0d1375 | 1592 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1593 | }\ |
6dbd0af5 MD |
1594 | else\ |
1595 | {\ | |
5f144b10 GH |
1596 | int first;\ |
1597 | tmp = scm_make_continuation (&first);\ | |
1598 | if (first)\ | |
2f0d1375 | 1599 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
6dbd0af5 MD |
1600 | }\ |
1601 | }\ | |
d3a6bc94 | 1602 | } while (0) |
0f2d19dd JB |
1603 | #undef RETURN |
1604 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1605 | #ifdef STACK_CHECKING |
1606 | #ifndef EVAL_STACK_CHECKING | |
1607 | #define EVAL_STACK_CHECKING | |
1608 | #endif | |
6dbd0af5 MD |
1609 | #endif |
1610 | ||
1611 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1612 | * *fixme*: Although efficiency is important here, this state variable | |
1613 | * should probably not be a global. It should be related to the | |
1614 | * current repl. | |
1615 | */ | |
1616 | ||
1cc91f1b | 1617 | |
1bbd0b84 | 1618 | SCM (*scm_ceval_ptr) (SCM x, SCM env); |
0f2d19dd | 1619 | |
1646d37b | 1620 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1621 | * information stack frame. It is accessed very often from the |
1622 | * debugging evaluator, so it should probably not be indirectly | |
1623 | * addressed. Better to save and restore it from the current root at | |
1624 | * any stack swaps. | |
1625 | */ | |
1626 | ||
1646d37b MD |
1627 | #ifndef USE_THREADS |
1628 | scm_debug_frame *scm_last_debug_frame; | |
1629 | #endif | |
6dbd0af5 MD |
1630 | |
1631 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1632 | * stack frames at each real stack frame. | |
1633 | */ | |
1634 | ||
1635 | int scm_debug_eframe_size; | |
1636 | ||
b7ff98dd | 1637 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1638 | |
a74145b8 MD |
1639 | int scm_eval_stack; |
1640 | ||
33b97402 | 1641 | scm_option scm_eval_opts[] = { |
a74145b8 | 1642 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1643 | }; |
1644 | ||
6dbd0af5 | 1645 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1646 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1647 | "*Flyweight representation of the stack at traps." }, | |
1648 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1649 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1650 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1651 | "Record procedure names at definition." }, | |
1652 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1653 | "Display backtrace in anti-chronological order." }, | |
274dc5fd | 1654 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, |
4e646a03 MD |
1655 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1656 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1657 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1658 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1659 | "Maximal number of stored backtrace frames." }, | |
1660 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1661 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1662 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1663 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1664 | }; |
1665 | ||
1666 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1667 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1668 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1669 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1670 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1671 | }; |
1672 | ||
a1ec6916 | 1673 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
1bbd0b84 | 1674 | (SCM setting), |
b380b885 | 1675 | "") |
1bbd0b84 | 1676 | #define FUNC_NAME s_scm_eval_options_interface |
33b97402 MD |
1677 | { |
1678 | SCM ans; | |
1679 | SCM_DEFER_INTS; | |
1680 | ans = scm_options (setting, | |
1681 | scm_eval_opts, | |
1682 | SCM_N_EVAL_OPTIONS, | |
1bbd0b84 | 1683 | FUNC_NAME); |
a74145b8 | 1684 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1685 | SCM_ALLOW_INTS; |
1686 | return ans; | |
1687 | } | |
1bbd0b84 | 1688 | #undef FUNC_NAME |
33b97402 | 1689 | |
a1ec6916 | 1690 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
1bbd0b84 | 1691 | (SCM setting), |
b380b885 | 1692 | "") |
1bbd0b84 | 1693 | #define FUNC_NAME s_scm_evaluator_traps |
33b97402 MD |
1694 | { |
1695 | SCM ans; | |
1696 | SCM_DEFER_INTS; | |
1697 | ans = scm_options (setting, | |
1698 | scm_evaluator_trap_table, | |
1699 | SCM_N_EVALUATOR_TRAPS, | |
1bbd0b84 | 1700 | FUNC_NAME); |
33b97402 | 1701 | SCM_RESET_DEBUG_MODE; |
bfc69694 | 1702 | SCM_ALLOW_INTS; |
33b97402 MD |
1703 | return ans; |
1704 | } | |
1bbd0b84 | 1705 | #undef FUNC_NAME |
33b97402 | 1706 | |
6dbd0af5 | 1707 | SCM |
6e8d25a6 | 1708 | scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc) |
0f2d19dd | 1709 | { |
680ed4a8 | 1710 | SCM *results = lloc, res; |
0f2d19dd JB |
1711 | while (SCM_NIMP (l)) |
1712 | { | |
cf7c17e9 | 1713 | #ifdef SCM_CAUTIOUS |
44d3cb0d | 1714 | if (SCM_CONSP (l)) |
680ed4a8 MD |
1715 | { |
1716 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1717 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1718 | else |
1719 | res = EVALCELLCAR (l, env); | |
1720 | } | |
3201d763 | 1721 | else if (SCM_TYP3 (l) == scm_tc3_cons_gloc) |
680ed4a8 | 1722 | { |
3201d763 DH |
1723 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell]; |
1724 | if (vcell == 0) | |
680ed4a8 | 1725 | res = SCM_CAR (l); /* struct planted in code */ |
3201d763 DH |
1726 | else |
1727 | res = SCM_PACK (vcell); | |
680ed4a8 MD |
1728 | } |
1729 | else | |
1730 | goto wrongnumargs; | |
1731 | #else | |
1732 | res = EVALCAR (l, env); | |
1733 | #endif | |
1734 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1735 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1736 | l = SCM_CDR (l); |
1737 | } | |
cf7c17e9 | 1738 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1739 | if (SCM_NNULLP (l)) |
1740 | { | |
1741 | wrongnumargs: | |
1742 | scm_wrong_num_args (proc); | |
1743 | } | |
1744 | #endif | |
1745 | return *results; | |
0f2d19dd JB |
1746 | } |
1747 | ||
6dbd0af5 MD |
1748 | #endif /* !DEVAL */ |
1749 | ||
1750 | ||
1751 | /* SECTION: Some local definitions for the evaluator. | |
1752 | */ | |
1753 | ||
1754 | #ifndef DEVAL | |
3201d763 | 1755 | #define CHECK_EQVISH(A,B) (SCM_EQ_P ((A), (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) |
6dbd0af5 MD |
1756 | #endif /* DEVAL */ |
1757 | ||
399dedcc | 1758 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1759 | |
1760 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1761 | * three heads. This code is compiled twice. | |
1762 | */ | |
1763 | ||
0f2d19dd | 1764 | #if 0 |
1cc91f1b | 1765 | |
0f2d19dd | 1766 | SCM |
1bbd0b84 | 1767 | scm_ceval (SCM x, SCM env) |
0f2d19dd JB |
1768 | {} |
1769 | #endif | |
1770 | #if 0 | |
1cc91f1b | 1771 | |
0f2d19dd | 1772 | SCM |
1bbd0b84 | 1773 | scm_deval (SCM x, SCM env) |
0f2d19dd JB |
1774 | {} |
1775 | #endif | |
1776 | ||
6dbd0af5 | 1777 | SCM |
1bbd0b84 | 1778 | SCM_CEVAL (SCM x, SCM env) |
0f2d19dd JB |
1779 | { |
1780 | union | |
1781 | { | |
1782 | SCM *lloc; | |
1783 | SCM arg1; | |
f8769b1d | 1784 | } t; |
6dbd0af5 MD |
1785 | SCM proc, arg2; |
1786 | #ifdef DEVAL | |
c0ab1b8d JB |
1787 | scm_debug_frame debug; |
1788 | scm_debug_info *debug_info_end; | |
1646d37b | 1789 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1790 | debug.status = scm_debug_eframe_size; |
04b6c081 MD |
1791 | /* |
1792 | * The debug.vect contains twice as much scm_debug_info frames as the | |
1793 | * user has specified with (debug-set! frames <n>). | |
1794 | * | |
1795 | * Even frames are eval frames, odd frames are apply frames. | |
1796 | */ | |
c0ab1b8d JB |
1797 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1798 | * sizeof (debug.vect[0])); | |
1799 | debug.info = debug.vect; | |
1800 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1801 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1802 | #endif |
b7ff98dd | 1803 | #ifdef EVAL_STACK_CHECKING |
6f13f9cb MD |
1804 | if (scm_stack_checking_enabled_p |
1805 | && SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc)) | |
6dbd0af5 | 1806 | { |
b7ff98dd | 1807 | #ifdef DEVAL |
6dbd0af5 MD |
1808 | debug.info->e.exp = x; |
1809 | debug.info->e.env = env; | |
b7ff98dd | 1810 | #endif |
6dbd0af5 MD |
1811 | scm_report_stack_overflow (); |
1812 | } | |
1813 | #endif | |
1814 | #ifdef DEVAL | |
1815 | goto start; | |
1816 | #endif | |
1817 | loopnoap: | |
1818 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1819 | loop: | |
1820 | #ifdef DEVAL | |
b7ff98dd MD |
1821 | SCM_CLEAR_ARGSREADY (debug); |
1822 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1823 | --debug.info; |
04b6c081 MD |
1824 | /* |
1825 | * In theory, this should be the only place where it is necessary to | |
1826 | * check for space in debug.vect since both eval frames and | |
1827 | * available space are even. | |
1828 | * | |
1829 | * For this to be the case, however, it is necessary that primitive | |
1830 | * special forms which jump back to `loop', `begin' or some similar | |
1831 | * label call PREP_APPLY. A convenient way to do this is to jump to | |
1832 | * `loopnoap' or `cdrxnoap'. | |
1833 | */ | |
c0ab1b8d | 1834 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1835 | { |
b7ff98dd | 1836 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1837 | debug.info -= 2; |
1838 | } | |
1839 | start: | |
1840 | debug.info->e.exp = x; | |
1841 | debug.info->e.env = env; | |
b6d75948 | 1842 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1843 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1844 | { |
156dcb09 | 1845 | SCM tail = SCM_BOOL(SCM_TAILRECP (debug)); |
b7ff98dd | 1846 | SCM_SET_TAILREC (debug); |
b7ff98dd | 1847 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1848 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1849 | else |
1850 | { | |
5f144b10 GH |
1851 | int first; |
1852 | SCM val = scm_make_continuation (&first); | |
1853 | ||
1854 | if (first) | |
1855 | t.arg1 = val; | |
1856 | else | |
6dbd0af5 | 1857 | { |
5f144b10 | 1858 | x = val; |
6dbd0af5 MD |
1859 | if (SCM_IMP (x)) |
1860 | { | |
1861 | RETURN (x); | |
1862 | } | |
1863 | else | |
1864 | /* This gives the possibility for the debugger to | |
1865 | modify the source expression before evaluation. */ | |
1866 | goto dispatch; | |
1867 | } | |
1868 | } | |
2f0d1375 | 1869 | scm_ithrow (scm_sym_enter_frame, |
6dbd0af5 MD |
1870 | scm_cons2 (t.arg1, tail, |
1871 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1872 | 0); | |
1873 | } | |
6dbd0af5 | 1874 | #endif |
e3173f93 | 1875 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1876 | dispatch: |
e3173f93 | 1877 | #endif |
9cb5124f | 1878 | SCM_TICK; |
0f2d19dd JB |
1879 | switch (SCM_TYP7 (x)) |
1880 | { | |
28b06554 | 1881 | case scm_tc7_symbol: |
0f2d19dd JB |
1882 | /* Only happens when called at top level. |
1883 | */ | |
1884 | x = scm_cons (x, SCM_UNDEFINED); | |
1885 | goto retval; | |
1886 | ||
c209c88e | 1887 | case SCM_BIT8(SCM_IM_AND): |
0f2d19dd JB |
1888 | x = SCM_CDR (x); |
1889 | t.arg1 = x; | |
1890 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1891 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1892 | { | |
1893 | RETURN (SCM_BOOL_F); | |
1894 | } | |
1895 | else | |
1896 | x = t.arg1; | |
6dbd0af5 | 1897 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1898 | goto carloop; |
1899 | ||
c209c88e | 1900 | case SCM_BIT8(SCM_IM_BEGIN): |
6dbd0af5 MD |
1901 | cdrxnoap: |
1902 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1903 | cdrxbegin: |
1904 | x = SCM_CDR (x); | |
1905 | ||
1906 | begin: | |
4163eb72 MV |
1907 | /* If we are on toplevel with a lookup closure, we need to sync |
1908 | with the current module. */ | |
1909 | if (SCM_CONSP(env) && !SCM_CONSP(SCM_CAR(env))) | |
1910 | { | |
1911 | t.arg1 = x; | |
1912 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1913 | { | |
1914 | SCM_SETCAR (env, scm_current_module_lookup_closure ()); | |
a2abcb58 | 1915 | SIDEVAL (SCM_CAR(x), env); |
4163eb72 MV |
1916 | x = t.arg1; |
1917 | } | |
1918 | /* once more, for the last form */ | |
1919 | SCM_SETCAR (env, scm_current_module_lookup_closure ()); | |
1920 | } | |
1921 | else | |
0f2d19dd | 1922 | { |
4163eb72 MV |
1923 | t.arg1 = x; |
1924 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
26d5b9b4 | 1925 | { |
4163eb72 | 1926 | if (SCM_IMP (SCM_CAR (x))) |
26d5b9b4 | 1927 | { |
4163eb72 MV |
1928 | if (SCM_ISYMP (SCM_CAR (x))) |
1929 | { | |
1930 | x = scm_m_expand_body (x, env); | |
1931 | goto begin; | |
1932 | } | |
26d5b9b4 | 1933 | } |
4163eb72 MV |
1934 | else |
1935 | SCM_CEVAL (SCM_CAR (x), env); | |
1936 | x = t.arg1; | |
26d5b9b4 | 1937 | } |
0f2d19dd JB |
1938 | } |
1939 | ||
1940 | carloop: /* scm_eval car of last form in list */ | |
1941 | if (SCM_NCELLP (SCM_CAR (x))) | |
1942 | { | |
1943 | x = SCM_CAR (x); | |
6cb702da | 1944 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1945 | } |
1946 | ||
1947 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1948 | { | |
1949 | retval: | |
26d5b9b4 | 1950 | RETURN (*scm_lookupcar (x, env, 1)) |
0f2d19dd JB |
1951 | } |
1952 | ||
1953 | x = SCM_CAR (x); | |
1954 | goto loop; /* tail recurse */ | |
1955 | ||
1956 | ||
c209c88e | 1957 | case SCM_BIT8(SCM_IM_CASE): |
0f2d19dd JB |
1958 | x = SCM_CDR (x); |
1959 | t.arg1 = EVALCAR (x, env); | |
1960 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1961 | { | |
1962 | proc = SCM_CAR (x); | |
cf498326 | 1963 | if (SCM_EQ_P (scm_sym_else, SCM_CAR (proc))) |
0f2d19dd JB |
1964 | { |
1965 | x = SCM_CDR (proc); | |
6dbd0af5 | 1966 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1967 | goto begin; |
1968 | } | |
1969 | proc = SCM_CAR (proc); | |
1970 | while (SCM_NIMP (proc)) | |
1971 | { | |
1972 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1973 | { | |
1974 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1975 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1976 | goto begin; |
1977 | } | |
1978 | proc = SCM_CDR (proc); | |
1979 | } | |
1980 | } | |
6dbd0af5 | 1981 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1982 | |
1983 | ||
c209c88e | 1984 | case SCM_BIT8(SCM_IM_COND): |
0f2d19dd JB |
1985 | while (SCM_NIMP (x = SCM_CDR (x))) |
1986 | { | |
1987 | proc = SCM_CAR (x); | |
1988 | t.arg1 = EVALCAR (proc, env); | |
1989 | if (SCM_NFALSEP (t.arg1)) | |
1990 | { | |
1991 | x = SCM_CDR (proc); | |
6dbd0af5 | 1992 | if SCM_NULLP (x) |
0f2d19dd | 1993 | { |
6dbd0af5 | 1994 | RETURN (t.arg1) |
0f2d19dd | 1995 | } |
cf498326 | 1996 | if (! SCM_EQ_P (scm_sym_arrow, SCM_CAR (x))) |
6dbd0af5 MD |
1997 | { |
1998 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1999 | goto begin; | |
2000 | } | |
0f2d19dd JB |
2001 | proc = SCM_CDR (x); |
2002 | proc = EVALCAR (proc, env); | |
2003 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2004 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2005 | ENTER_APPLY; | |
0f2d19dd JB |
2006 | goto evap1; |
2007 | } | |
2008 | } | |
6dbd0af5 | 2009 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2010 | |
2011 | ||
c209c88e | 2012 | case SCM_BIT8(SCM_IM_DO): |
0f2d19dd JB |
2013 | x = SCM_CDR (x); |
2014 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
2015 | t.arg1 = SCM_EOL; /* values */ | |
2016 | while (SCM_NIMP (proc)) | |
2017 | { | |
2018 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2019 | proc = SCM_CDR (proc); | |
2020 | } | |
e2806c10 | 2021 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
2022 | x = SCM_CDR (SCM_CDR (x)); |
2023 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
2024 | { | |
f3d2630a | 2025 | for (proc = SCM_CADR (x); SCM_NIMP (proc); proc = SCM_CDR (proc)) |
0f2d19dd JB |
2026 | { |
2027 | t.arg1 = SCM_CAR (proc); /* body */ | |
2028 | SIDEVAL (t.arg1, env); | |
2029 | } | |
f3d2630a MD |
2030 | for (t.arg1 = SCM_EOL, proc = SCM_CDDR (x); |
2031 | SCM_NIMP (proc); | |
2032 | proc = SCM_CDR (proc)) | |
0f2d19dd | 2033 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ |
e2806c10 | 2034 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
2035 | } |
2036 | x = SCM_CDR (proc); | |
2037 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
2038 | RETURN (SCM_UNSPECIFIED); |
2039 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
2040 | goto begin; |
2041 | ||
2042 | ||
c209c88e | 2043 | case SCM_BIT8(SCM_IM_IF): |
0f2d19dd JB |
2044 | x = SCM_CDR (x); |
2045 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
2046 | x = SCM_CDR (x); | |
2047 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
2048 | { | |
2049 | RETURN (SCM_UNSPECIFIED); | |
2050 | } | |
6dbd0af5 | 2051 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2052 | goto carloop; |
2053 | ||
2054 | ||
c209c88e | 2055 | case SCM_BIT8(SCM_IM_LET): |
0f2d19dd JB |
2056 | x = SCM_CDR (x); |
2057 | proc = SCM_CAR (SCM_CDR (x)); | |
2058 | t.arg1 = SCM_EOL; | |
2059 | do | |
2060 | { | |
2061 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2062 | } | |
2063 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 2064 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 2065 | x = SCM_CDR (x); |
6dbd0af5 | 2066 | goto cdrxnoap; |
0f2d19dd JB |
2067 | |
2068 | ||
c209c88e | 2069 | case SCM_BIT8(SCM_IM_LETREC): |
0f2d19dd | 2070 | x = SCM_CDR (x); |
e2806c10 | 2071 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
2072 | x = SCM_CDR (x); |
2073 | proc = SCM_CAR (x); | |
2074 | t.arg1 = SCM_EOL; | |
2075 | do | |
2076 | { | |
2077 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2078 | } | |
2079 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 2080 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 2081 | goto cdrxnoap; |
0f2d19dd JB |
2082 | |
2083 | ||
c209c88e | 2084 | case SCM_BIT8(SCM_IM_LETSTAR): |
0f2d19dd JB |
2085 | x = SCM_CDR (x); |
2086 | proc = SCM_CAR (x); | |
2087 | if (SCM_IMP (proc)) | |
2088 | { | |
e2806c10 | 2089 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 2090 | goto cdrxnoap; |
0f2d19dd JB |
2091 | } |
2092 | do | |
2093 | { | |
2094 | t.arg1 = SCM_CAR (proc); | |
2095 | proc = SCM_CDR (proc); | |
e2806c10 | 2096 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
2097 | } |
2098 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 2099 | goto cdrxnoap; |
0f2d19dd | 2100 | |
c209c88e | 2101 | case SCM_BIT8(SCM_IM_OR): |
0f2d19dd JB |
2102 | x = SCM_CDR (x); |
2103 | t.arg1 = x; | |
2104 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
2105 | { | |
2106 | x = EVALCAR (x, env); | |
2107 | if (SCM_NFALSEP (x)) | |
2108 | { | |
2109 | RETURN (x); | |
2110 | } | |
2111 | x = t.arg1; | |
2112 | } | |
6dbd0af5 | 2113 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2114 | goto carloop; |
2115 | ||
2116 | ||
c209c88e | 2117 | case SCM_BIT8(SCM_IM_LAMBDA): |
0f2d19dd JB |
2118 | RETURN (scm_closure (SCM_CDR (x), env)); |
2119 | ||
2120 | ||
c209c88e | 2121 | case SCM_BIT8(SCM_IM_QUOTE): |
0f2d19dd JB |
2122 | RETURN (SCM_CAR (SCM_CDR (x))); |
2123 | ||
2124 | ||
c209c88e | 2125 | case SCM_BIT8(SCM_IM_SET_X): |
0f2d19dd JB |
2126 | x = SCM_CDR (x); |
2127 | proc = SCM_CAR (x); | |
3201d763 | 2128 | switch (SCM_ITAG3 (proc)) |
0f2d19dd | 2129 | { |
3201d763 | 2130 | case scm_tc3_cons: |
26d5b9b4 | 2131 | t.lloc = scm_lookupcar (x, env, 1); |
0f2d19dd | 2132 | break; |
3201d763 | 2133 | case scm_tc3_cons_gloc: |
a23afe53 | 2134 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
2135 | break; |
2136 | #ifdef MEMOIZE_LOCALS | |
3201d763 | 2137 | case scm_tc3_imm24: |
0f2d19dd JB |
2138 | t.lloc = scm_ilookup (proc, env); |
2139 | break; | |
2140 | #endif | |
2141 | } | |
2142 | x = SCM_CDR (x); | |
2143 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
2144 | #ifdef SICP |
2145 | RETURN (*t.lloc); | |
2146 | #else | |
2147 | RETURN (SCM_UNSPECIFIED); | |
2148 | #endif | |
2149 | ||
2150 | ||
c209c88e | 2151 | case SCM_BIT8(SCM_IM_DEFINE): /* only for internal defines */ |
26d5b9b4 MD |
2152 | scm_misc_error (NULL, "Bad define placement", SCM_EOL); |
2153 | ||
0f2d19dd | 2154 | /* new syntactic forms go here. */ |
c209c88e | 2155 | case SCM_BIT8(SCM_MAKISYM (0)): |
0f2d19dd JB |
2156 | proc = SCM_CAR (x); |
2157 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
2158 | switch SCM_ISYMNUM (proc) | |
2159 | { | |
0f2d19dd JB |
2160 | case (SCM_ISYMNUM (SCM_IM_APPLY)): |
2161 | proc = SCM_CDR (x); | |
2162 | proc = EVALCAR (proc, env); | |
2163 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
2164 | if (SCM_CLOSUREP (proc)) | |
2165 | { | |
1609038c | 2166 | SCM argl, tl; |
6dbd0af5 | 2167 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
2168 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
2169 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
2170 | #ifdef DEVAL |
2171 | debug.info->a.args = t.arg1; | |
2172 | #endif | |
cf7c17e9 | 2173 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
2174 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
2175 | goto wrongnumargs; | |
2176 | #endif | |
c79450dd | 2177 | ENTER_APPLY; |
1609038c MD |
2178 | /* Copy argument list */ |
2179 | if (SCM_IMP (t.arg1)) | |
2180 | argl = t.arg1; | |
2181 | else | |
2182 | { | |
2183 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
2184 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
2185 | && SCM_CONSP (t.arg1)) | |
2186 | { | |
2187 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
2188 | SCM_UNSPECIFIED)); | |
2189 | tl = SCM_CDR (tl); | |
2190 | } | |
2191 | SCM_SETCDR (tl, t.arg1); | |
2192 | } | |
2193 | ||
2194 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
2195 | x = SCM_CODE (proc); |
2196 | goto cdrxbegin; | |
2197 | } | |
81123e6d | 2198 | proc = scm_f_apply; |
0f2d19dd JB |
2199 | goto evapply; |
2200 | ||
2201 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
5f144b10 GH |
2202 | { |
2203 | int first; | |
2204 | SCM val = scm_make_continuation (&first); | |
2205 | ||
2206 | if (first) | |
2207 | t.arg1 = val; | |
2208 | else | |
2209 | RETURN (val); | |
2210 | } | |
0f2d19dd JB |
2211 | proc = SCM_CDR (x); |
2212 | proc = evalcar (proc, env); | |
2213 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2214 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2215 | ENTER_APPLY; | |
0f2d19dd JB |
2216 | goto evap1; |
2217 | ||
a570e93a MD |
2218 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
2219 | RETURN (scm_makprom (scm_closure (SCM_CDR (x), env))) | |
2220 | ||
89efbff4 | 2221 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
195847fa MD |
2222 | proc = SCM_CADR (x); /* unevaluated operands */ |
2223 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2224 | if (SCM_IMP (proc)) | |
2225 | arg2 = *scm_ilookup (proc, env); | |
2226 | else if (SCM_NCONSP (proc)) | |
2227 | { | |
2228 | if (SCM_NCELLP (proc)) | |
2229 | arg2 = SCM_GLOC_VAL (proc); | |
2230 | else | |
2231 | arg2 = *scm_lookupcar (SCM_CDR (x), env, 1); | |
2232 | } | |
2233 | else | |
2234 | { | |
2235 | arg2 = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2236 | t.lloc = SCM_CDRLOC (arg2); | |
2237 | while (SCM_NIMP (proc = SCM_CDR (proc))) | |
2238 | { | |
2239 | *t.lloc = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2240 | t.lloc = SCM_CDRLOC (*t.lloc); | |
2241 | } | |
2242 | } | |
2243 | ||
2244 | type_dispatch: | |
61364ba6 MD |
2245 | /* The type dispatch code is duplicated here |
2246 | * (c.f. objects.c:scm_mcache_compute_cmethod) since that | |
2247 | * cuts down execution time for type dispatch to 50%. | |
2248 | */ | |
2249 | { | |
2250 | int i, n, end, mask; | |
2251 | SCM z = SCM_CDDR (x); | |
2252 | n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */ | |
2253 | proc = SCM_CADR (z); | |
2254 | ||
2255 | if (SCM_NIMP (proc)) | |
2256 | { | |
2257 | /* Prepare for linear search */ | |
2258 | mask = -1; | |
2259 | i = 0; | |
b5c2579a | 2260 | end = SCM_VECTOR_LENGTH (proc); |
61364ba6 MD |
2261 | } |
2262 | else | |
2263 | { | |
2264 | /* Compute a hash value */ | |
2265 | int hashset = SCM_INUM (proc); | |
2266 | int j = n; | |
2267 | mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z))); | |
2268 | proc = SCM_CADR (z); | |
2269 | i = 0; | |
2270 | t.arg1 = arg2; | |
2271 | if (SCM_NIMP (t.arg1)) | |
2272 | do | |
2273 | { | |
d8c40b9f DH |
2274 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1))) |
2275 | [scm_si_hashsets + hashset]; | |
61364ba6 MD |
2276 | t.arg1 = SCM_CDR (t.arg1); |
2277 | } | |
4ea6a431 | 2278 | while (j-- && SCM_NIMP (t.arg1)); |
61364ba6 MD |
2279 | i &= mask; |
2280 | end = i; | |
2281 | } | |
2282 | ||
2283 | /* Search for match */ | |
2284 | do | |
2285 | { | |
2286 | int j = n; | |
2287 | z = SCM_VELTS (proc)[i]; | |
2288 | t.arg1 = arg2; /* list of arguments */ | |
2289 | if (SCM_NIMP (t.arg1)) | |
2290 | do | |
2291 | { | |
2292 | /* More arguments than specifiers => CLASS != ENV */ | |
cf498326 | 2293 | if (! SCM_EQ_P (scm_class_of (SCM_CAR (t.arg1)), SCM_CAR (z))) |
61364ba6 MD |
2294 | goto next_method; |
2295 | t.arg1 = SCM_CDR (t.arg1); | |
2296 | z = SCM_CDR (z); | |
2297 | } | |
4ea6a431 | 2298 | while (j-- && SCM_NIMP (t.arg1)); |
61364ba6 MD |
2299 | /* Fewer arguments than specifiers => CAR != ENV */ |
2300 | if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))) | |
2301 | goto next_method; | |
2302 | apply_cmethod: | |
2303 | env = EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (z)), | |
2304 | arg2, | |
2305 | SCM_CMETHOD_ENV (z)); | |
2306 | x = SCM_CMETHOD_CODE (z); | |
2307 | goto cdrxbegin; | |
2308 | next_method: | |
2309 | i = (i + 1) & mask; | |
2310 | } while (i != end); | |
2311 | ||
2312 | z = scm_memoize_method (x, arg2); | |
2313 | goto apply_cmethod; | |
2314 | } | |
73b64342 | 2315 | |
ca4be6ea MD |
2316 | case (SCM_ISYMNUM (SCM_IM_SLOT_REF)): |
2317 | x = SCM_CDR (x); | |
2318 | t.arg1 = EVALCAR (x, env); | |
d8c40b9f | 2319 | RETURN (SCM_PACK (SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CADR (x))])) |
ca4be6ea MD |
2320 | |
2321 | case (SCM_ISYMNUM (SCM_IM_SLOT_SET_X)): | |
2322 | x = SCM_CDR (x); | |
2323 | t.arg1 = EVALCAR (x, env); | |
2324 | x = SCM_CDR (x); | |
2325 | proc = SCM_CDR (x); | |
d8c40b9f DH |
2326 | SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CAR (x))] |
2327 | = SCM_UNPACK (EVALCAR (proc, env)); | |
5623a9b4 | 2328 | RETURN (SCM_UNSPECIFIED) |
ca4be6ea | 2329 | |
73b64342 MD |
2330 | case (SCM_ISYMNUM (SCM_IM_NIL_COND)): |
2331 | proc = SCM_CDR (x); | |
2332 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2333 | { | |
2334 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2335 | || SCM_EQ_P (t.arg1, scm_lisp_nil))) |
73b64342 | 2336 | { |
cf498326 | 2337 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2338 | RETURN (t.arg1); |
2339 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2340 | goto carloop; | |
2341 | } | |
2342 | proc = SCM_CDR (x); | |
2343 | } | |
2344 | x = proc; | |
2345 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2346 | goto carloop; | |
2347 | ||
2348 | case (SCM_ISYMNUM (SCM_IM_NIL_IFY)): | |
2349 | x = SCM_CDR (x); | |
2350 | RETURN ((SCM_FALSEP (proc = EVALCAR (x, env)) || SCM_NULLP (proc)) | |
43a912cf | 2351 | ? scm_lisp_nil |
73b64342 MD |
2352 | : proc) |
2353 | ||
2354 | case (SCM_ISYMNUM (SCM_IM_T_IFY)): | |
2355 | x = SCM_CDR (x); | |
43a912cf | 2356 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) ? scm_lisp_t : scm_lisp_nil) |
73b64342 MD |
2357 | |
2358 | case (SCM_ISYMNUM (SCM_IM_0_COND)): | |
2359 | proc = SCM_CDR (x); | |
2360 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2361 | { | |
2362 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
3201d763 | 2363 | || SCM_EQ_P (t.arg1, SCM_INUM0))) |
73b64342 | 2364 | { |
cf498326 | 2365 | if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED)) |
73b64342 MD |
2366 | RETURN (t.arg1); |
2367 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2368 | goto carloop; | |
2369 | } | |
2370 | proc = SCM_CDR (x); | |
2371 | } | |
2372 | x = proc; | |
2373 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2374 | goto carloop; | |
2375 | ||
2376 | case (SCM_ISYMNUM (SCM_IM_0_IFY)): | |
2377 | x = SCM_CDR (x); | |
2378 | RETURN (SCM_FALSEP (proc = EVALCAR (x, env)) | |
2379 | ? SCM_INUM0 | |
2380 | : proc) | |
2381 | ||
2382 | case (SCM_ISYMNUM (SCM_IM_1_IFY)): | |
2383 | x = SCM_CDR (x); | |
2384 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) | |
2385 | ? SCM_MAKINUM (1) | |
2386 | : SCM_INUM0) | |
2387 | ||
2388 | case (SCM_ISYMNUM (SCM_IM_BIND)): | |
2389 | x = SCM_CDR (x); | |
2390 | ||
2391 | t.arg1 = SCM_CAR (x); | |
2392 | arg2 = SCM_CDAR (env); | |
2393 | while (SCM_NIMP (arg2)) | |
2394 | { | |
2395 | proc = SCM_GLOC_VAL (SCM_CAR (t.arg1)); | |
a963f787 MD |
2396 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2397 | SCM_CAR (arg2)); | |
73b64342 MD |
2398 | SCM_SETCAR (arg2, proc); |
2399 | t.arg1 = SCM_CDR (t.arg1); | |
2400 | arg2 = SCM_CDR (arg2); | |
2401 | } | |
2402 | t.arg1 = SCM_CAR (x); | |
2403 | scm_dynwinds = scm_acons (t.arg1, SCM_CDAR (env), scm_dynwinds); | |
89efbff4 | 2404 | |
73b64342 MD |
2405 | arg2 = x = SCM_CDR (x); |
2406 | while (SCM_NNULLP (arg2 = SCM_CDR (arg2))) | |
2407 | { | |
2408 | SIDEVAL (SCM_CAR (x), env); | |
2409 | x = arg2; | |
2410 | } | |
2411 | proc = EVALCAR (x, env); | |
2412 | ||
2413 | scm_dynwinds = SCM_CDR (scm_dynwinds); | |
2414 | arg2 = SCM_CDAR (env); | |
2415 | while (SCM_NIMP (arg2)) | |
2416 | { | |
a963f787 MD |
2417 | SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L), |
2418 | SCM_CAR (arg2)); | |
73b64342 MD |
2419 | t.arg1 = SCM_CDR (t.arg1); |
2420 | arg2 = SCM_CDR (arg2); | |
2421 | } | |
2422 | ||
2423 | RETURN (proc) | |
2424 | ||
0f2d19dd JB |
2425 | default: |
2426 | goto badfun; | |
2427 | } | |
2428 | ||
2429 | default: | |
2430 | proc = x; | |
2431 | badfun: | |
f5bf2977 | 2432 | /* scm_everr (x, env,...) */ |
523f5266 | 2433 | scm_misc_error (NULL, |
70d63753 | 2434 | "Wrong type to apply: ~S", |
523f5266 | 2435 | scm_listify (proc, SCM_UNDEFINED)); |
0f2d19dd JB |
2436 | case scm_tc7_vector: |
2437 | case scm_tc7_wvect: | |
afe5177e | 2438 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
2439 | case scm_tc7_bvect: |
2440 | case scm_tc7_byvect: | |
2441 | case scm_tc7_svect: | |
2442 | case scm_tc7_ivect: | |
2443 | case scm_tc7_uvect: | |
2444 | case scm_tc7_fvect: | |
2445 | case scm_tc7_dvect: | |
2446 | case scm_tc7_cvect: | |
5c11cc9d | 2447 | #ifdef HAVE_LONG_LONGS |
0f2d19dd | 2448 | case scm_tc7_llvect: |
afe5177e | 2449 | #endif |
0f2d19dd JB |
2450 | #endif |
2451 | case scm_tc7_string: | |
0f2d19dd | 2452 | case scm_tc7_substring: |
0f2d19dd JB |
2453 | case scm_tc7_smob: |
2454 | case scm_tcs_closures: | |
224822be | 2455 | case scm_tc7_cclo: |
89efbff4 | 2456 | case scm_tc7_pws: |
0f2d19dd JB |
2457 | case scm_tcs_subrs: |
2458 | RETURN (x); | |
2459 | ||
2460 | #ifdef MEMOIZE_LOCALS | |
c209c88e | 2461 | case SCM_BIT8(SCM_ILOC00): |
0f2d19dd JB |
2462 | proc = *scm_ilookup (SCM_CAR (x), env); |
2463 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2464 | #ifndef SCM_RECKLESS |
2465 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2466 | goto checkargs; |
2467 | #endif | |
2468 | #endif | |
2469 | break; | |
2470 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2471 | ||
2472 | ||
3201d763 DH |
2473 | case scm_tcs_cons_gloc: { |
2474 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; | |
2475 | if (vcell == 0) { | |
aa00bd1e MD |
2476 | /* This is a struct implanted in the code, not a gloc. */ |
2477 | RETURN (x); | |
3201d763 DH |
2478 | } else { |
2479 | proc = SCM_PACK (vcell); | |
2480 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2481 | #ifndef SCM_RECKLESS |
2482 | #ifdef SCM_CAUTIOUS | |
3201d763 | 2483 | goto checkargs; |
0f2d19dd JB |
2484 | #endif |
2485 | #endif | |
3201d763 | 2486 | } |
0f2d19dd | 2487 | break; |
3201d763 | 2488 | } |
0f2d19dd JB |
2489 | |
2490 | case scm_tcs_cons_nimcar: | |
2491 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2492 | { | |
f8769b1d | 2493 | #ifdef USE_THREADS |
26d5b9b4 | 2494 | t.lloc = scm_lookupcar1 (x, env, 1); |
f8769b1d MV |
2495 | if (t.lloc == NULL) |
2496 | { | |
2497 | /* we have lost the race, start again. */ | |
2498 | goto dispatch; | |
2499 | } | |
2500 | proc = *t.lloc; | |
2501 | #else | |
26d5b9b4 | 2502 | proc = *scm_lookupcar (x, env, 1); |
f8769b1d MV |
2503 | #endif |
2504 | ||
0f2d19dd JB |
2505 | if (SCM_IMP (proc)) |
2506 | { | |
2507 | unmemocar (x, env); | |
2508 | goto badfun; | |
2509 | } | |
2510 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2511 | { | |
2512 | unmemocar (x, env); | |
2513 | ||
2514 | handle_a_macro: | |
368bf056 | 2515 | #ifdef DEVAL |
7c354052 MD |
2516 | /* Set a flag during macro expansion so that macro |
2517 | application frames can be deleted from the backtrace. */ | |
2518 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2519 | #endif |
f8769b1d MV |
2520 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2521 | scm_cons (env, scm_listofnull)); | |
2522 | ||
7c354052 MD |
2523 | #ifdef DEVAL |
2524 | SCM_CLEAR_MACROEXP (debug); | |
2525 | #endif | |
445f675c | 2526 | switch (SCM_CELL_WORD_0 (proc) >> 16) |
0f2d19dd JB |
2527 | { |
2528 | case 2: | |
2529 | if (scm_ilength (t.arg1) <= 0) | |
2530 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2531 | #ifdef DEVAL |
2532 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2533 | { | |
6dbd0af5 | 2534 | SCM_DEFER_INTS; |
a23afe53 MD |
2535 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2536 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2537 | SCM_ALLOW_INTS; |
2538 | goto dispatch; | |
2539 | } | |
2540 | /* Prevent memoizing of debug info expression. */ | |
6203706f MD |
2541 | debug.info->e.exp = scm_cons_source (debug.info->e.exp, |
2542 | SCM_CAR (x), | |
2543 | SCM_CDR (x)); | |
6dbd0af5 | 2544 | #endif |
0f2d19dd | 2545 | SCM_DEFER_INTS; |
a23afe53 MD |
2546 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2547 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2548 | SCM_ALLOW_INTS; |
6dbd0af5 | 2549 | goto loopnoap; |
0f2d19dd JB |
2550 | case 1: |
2551 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2552 | goto loopnoap; |
0f2d19dd JB |
2553 | case 0: |
2554 | RETURN (t.arg1); | |
2555 | } | |
2556 | } | |
2557 | } | |
2558 | else | |
2559 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2560 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2561 | #ifndef SCM_RECKLESS |
2562 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2563 | checkargs: |
2564 | #endif | |
2565 | if (SCM_CLOSUREP (proc)) | |
2566 | { | |
2567 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2568 | t.arg1 = SCM_CDR (x); | |
2569 | while (SCM_NIMP (arg2)) | |
2570 | { | |
2571 | if (SCM_NCONSP (arg2)) | |
2572 | goto evapply; | |
2573 | if (SCM_IMP (t.arg1)) | |
2574 | goto umwrongnumargs; | |
2575 | arg2 = SCM_CDR (arg2); | |
2576 | t.arg1 = SCM_CDR (t.arg1); | |
2577 | } | |
2578 | if (SCM_NNULLP (t.arg1)) | |
2579 | goto umwrongnumargs; | |
2580 | } | |
2581 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2582 | goto handle_a_macro; | |
2583 | #endif | |
2584 | } | |
2585 | ||
2586 | ||
6dbd0af5 MD |
2587 | evapply: |
2588 | PREP_APPLY (proc, SCM_EOL); | |
2589 | if (SCM_NULLP (SCM_CDR (x))) { | |
2590 | ENTER_APPLY; | |
89efbff4 | 2591 | evap0: |
0f2d19dd JB |
2592 | switch (SCM_TYP7 (proc)) |
2593 | { /* no arguments given */ | |
2594 | case scm_tc7_subr_0: | |
2595 | RETURN (SCM_SUBRF (proc) ()); | |
2596 | case scm_tc7_subr_1o: | |
2597 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2598 | case scm_tc7_lsubr: | |
2599 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2600 | case scm_tc7_rpsubr: | |
2601 | RETURN (SCM_BOOL_T); | |
2602 | case scm_tc7_asubr: | |
2603 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
0717dfd8 | 2604 | case scm_tc7_smob: |
68b06924 | 2605 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 2606 | goto badfun; |
68b06924 | 2607 | RETURN (SCM_SMOB_APPLY_0 (proc)); |
0f2d19dd JB |
2608 | case scm_tc7_cclo: |
2609 | t.arg1 = proc; | |
2610 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2611 | #ifdef DEVAL |
2612 | debug.info->a.proc = proc; | |
2613 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2614 | #endif | |
0f2d19dd | 2615 | goto evap1; |
89efbff4 MD |
2616 | case scm_tc7_pws: |
2617 | proc = SCM_PROCEDURE (proc); | |
2618 | #ifdef DEVAL | |
2619 | debug.info->a.proc = proc; | |
2620 | #endif | |
002f1a5d MD |
2621 | if (!SCM_CLOSUREP (proc)) |
2622 | goto evap0; | |
2623 | if (scm_badformalsp (proc, 0)) | |
2624 | goto umwrongnumargs; | |
0f2d19dd JB |
2625 | case scm_tcs_closures: |
2626 | x = SCM_CODE (proc); | |
e2806c10 | 2627 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2628 | goto cdrxbegin; |
da7f71d7 | 2629 | case scm_tcs_cons_gloc: |
195847fa MD |
2630 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2631 | { | |
2632 | x = SCM_ENTITY_PROCEDURE (proc); | |
2633 | arg2 = SCM_EOL; | |
2634 | goto type_dispatch; | |
2635 | } | |
2636 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2637 | goto badfun; |
2638 | else | |
da7f71d7 | 2639 | { |
195847fa MD |
2640 | t.arg1 = proc; |
2641 | proc = (SCM_I_ENTITYP (proc) | |
2642 | ? SCM_ENTITY_PROCEDURE (proc) | |
2643 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 | 2644 | #ifdef DEVAL |
195847fa MD |
2645 | debug.info->a.proc = proc; |
2646 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
da7f71d7 | 2647 | #endif |
195847fa MD |
2648 | if (SCM_NIMP (proc)) |
2649 | goto evap1; | |
2650 | else | |
2651 | goto badfun; | |
da7f71d7 | 2652 | } |
0f2d19dd JB |
2653 | case scm_tc7_subr_1: |
2654 | case scm_tc7_subr_2: | |
2655 | case scm_tc7_subr_2o: | |
2656 | case scm_tc7_cxr: | |
2657 | case scm_tc7_subr_3: | |
2658 | case scm_tc7_lsubr_2: | |
2659 | umwrongnumargs: | |
2660 | unmemocar (x, env); | |
2661 | wrongnumargs: | |
f5bf2977 GH |
2662 | /* scm_everr (x, env,...) */ |
2663 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2664 | default: |
2665 | /* handle macros here */ | |
2666 | goto badfun; | |
2667 | } | |
6dbd0af5 | 2668 | } |
0f2d19dd JB |
2669 | |
2670 | /* must handle macros by here */ | |
2671 | x = SCM_CDR (x); | |
cf7c17e9 | 2672 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2673 | if (SCM_IMP (x)) |
2674 | goto wrongnumargs; | |
680ed4a8 MD |
2675 | else if (SCM_CONSP (x)) |
2676 | { | |
2677 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2678 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2679 | else |
2680 | t.arg1 = EVALCELLCAR (x, env); | |
2681 | } | |
3201d763 | 2682 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2683 | { |
3201d763 DH |
2684 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2685 | if (vcell == 0) | |
680ed4a8 | 2686 | t.arg1 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2687 | else |
2688 | t.arg1 = SCM_PACK (vcell); | |
680ed4a8 MD |
2689 | } |
2690 | else | |
2691 | goto wrongnumargs; | |
2692 | #else | |
0f2d19dd | 2693 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2694 | #endif |
6dbd0af5 MD |
2695 | #ifdef DEVAL |
2696 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2697 | #endif | |
0f2d19dd JB |
2698 | x = SCM_CDR (x); |
2699 | if (SCM_NULLP (x)) | |
2700 | { | |
6dbd0af5 | 2701 | ENTER_APPLY; |
0f2d19dd JB |
2702 | evap1: |
2703 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2704 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2705 | case scm_tc7_subr_2o: |
2706 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2707 | case scm_tc7_subr_1: | |
2708 | case scm_tc7_subr_1o: | |
2709 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2710 | case scm_tc7_cxr: | |
0f2d19dd JB |
2711 | if (SCM_SUBRF (proc)) |
2712 | { | |
2713 | if (SCM_INUMP (t.arg1)) | |
2714 | { | |
f8de44c1 | 2715 | RETURN (scm_make_real (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)))); |
0f2d19dd JB |
2716 | } |
2717 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2718 | if (SCM_REALP (t.arg1)) | |
2719 | { | |
eb42e2f0 | 2720 | RETURN (scm_make_real (SCM_DSUBRF (proc) (SCM_REAL_VALUE (t.arg1)))); |
0f2d19dd JB |
2721 | } |
2722 | #ifdef SCM_BIGDIG | |
2723 | if (SCM_BIGP (t.arg1)) | |
2724 | { | |
f8de44c1 | 2725 | RETURN (scm_make_real (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)))); |
0f2d19dd JB |
2726 | } |
2727 | #endif | |
2728 | floerr: | |
9de33deb | 2729 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), t.arg1, |
3db4adfc | 2730 | SCM_ARG1, SCM_SYMBOL_CHARS (SCM_SNAME (proc))); |
0f2d19dd | 2731 | } |
3201d763 | 2732 | proc = SCM_SNAME (proc); |
0f2d19dd | 2733 | { |
b5c2579a | 2734 | char *chrs = SCM_SYMBOL_CHARS (proc) + SCM_SYMBOL_LENGTH (proc) - 1; |
0f2d19dd JB |
2735 | while ('c' != *--chrs) |
2736 | { | |
0c95b57d | 2737 | SCM_ASSERT (SCM_CONSP (t.arg1), |
3db4adfc | 2738 | t.arg1, SCM_ARG1, SCM_SYMBOL_CHARS (proc)); |
0f2d19dd JB |
2739 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); |
2740 | } | |
2741 | RETURN (t.arg1); | |
2742 | } | |
2743 | case scm_tc7_rpsubr: | |
2744 | RETURN (SCM_BOOL_T); | |
2745 | case scm_tc7_asubr: | |
2746 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2747 | case scm_tc7_lsubr: | |
2748 | #ifdef DEVAL | |
6dbd0af5 | 2749 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2750 | #else |
2751 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2752 | #endif | |
0717dfd8 | 2753 | case scm_tc7_smob: |
68b06924 | 2754 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 2755 | goto badfun; |
68b06924 | 2756 | RETURN (SCM_SMOB_APPLY_1 (proc, t.arg1)); |
0f2d19dd JB |
2757 | case scm_tc7_cclo: |
2758 | arg2 = t.arg1; | |
2759 | t.arg1 = proc; | |
2760 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2761 | #ifdef DEVAL |
2762 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2763 | debug.info->a.proc = proc; | |
2764 | #endif | |
0f2d19dd | 2765 | goto evap2; |
89efbff4 MD |
2766 | case scm_tc7_pws: |
2767 | proc = SCM_PROCEDURE (proc); | |
2768 | #ifdef DEVAL | |
2769 | debug.info->a.proc = proc; | |
2770 | #endif | |
002f1a5d MD |
2771 | if (!SCM_CLOSUREP (proc)) |
2772 | goto evap1; | |
2773 | if (scm_badformalsp (proc, 1)) | |
2774 | goto umwrongnumargs; | |
0f2d19dd | 2775 | case scm_tcs_closures: |
195847fa | 2776 | /* clos1: */ |
0f2d19dd JB |
2777 | x = SCM_CODE (proc); |
2778 | #ifdef DEVAL | |
e2806c10 | 2779 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2780 | #else |
e2806c10 | 2781 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2782 | #endif |
2783 | goto cdrxbegin; | |
0c32d76c | 2784 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2785 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2786 | { | |
195847fa | 2787 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2788 | #ifdef DEVAL |
2789 | arg2 = debug.info->a.args; | |
2790 | #else | |
2791 | arg2 = scm_cons (t.arg1, SCM_EOL); | |
2792 | #endif | |
f3d2630a MD |
2793 | goto type_dispatch; |
2794 | } | |
2795 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2796 | goto badfun; |
2797 | else | |
0c32d76c | 2798 | { |
195847fa MD |
2799 | arg2 = t.arg1; |
2800 | t.arg1 = proc; | |
2801 | proc = (SCM_I_ENTITYP (proc) | |
2802 | ? SCM_ENTITY_PROCEDURE (proc) | |
2803 | : SCM_OPERATOR_PROCEDURE (proc)); | |
0c32d76c | 2804 | #ifdef DEVAL |
195847fa MD |
2805 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); |
2806 | debug.info->a.proc = proc; | |
0c32d76c | 2807 | #endif |
195847fa MD |
2808 | if (SCM_NIMP (proc)) |
2809 | goto evap2; | |
2810 | else | |
2811 | goto badfun; | |
0c32d76c | 2812 | } |
0f2d19dd JB |
2813 | case scm_tc7_subr_2: |
2814 | case scm_tc7_subr_0: | |
2815 | case scm_tc7_subr_3: | |
2816 | case scm_tc7_lsubr_2: | |
2817 | goto wrongnumargs; | |
2818 | default: | |
2819 | goto badfun; | |
2820 | } | |
2821 | } | |
cf7c17e9 | 2822 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2823 | if (SCM_IMP (x)) |
2824 | goto wrongnumargs; | |
680ed4a8 MD |
2825 | else if (SCM_CONSP (x)) |
2826 | { | |
2827 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2828 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2829 | else |
2830 | arg2 = EVALCELLCAR (x, env); | |
2831 | } | |
3201d763 | 2832 | else if (SCM_TYP3 (x) == scm_tc3_cons_gloc) |
680ed4a8 | 2833 | { |
3201d763 DH |
2834 | scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell]; |
2835 | if (vcell == 0) | |
680ed4a8 | 2836 | arg2 = SCM_CAR (x); /* struct planted in code */ |
3201d763 DH |
2837 | else |
2838 | arg2 = SCM_PACK (vcell); | |
680ed4a8 MD |
2839 | } |
2840 | else | |
2841 | goto wrongnumargs; | |
2842 | #else | |
2843 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2844 | #endif |
2845 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2846 | #ifdef DEVAL |
2847 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2848 | #endif | |
0f2d19dd JB |
2849 | x = SCM_CDR (x); |
2850 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2851 | ENTER_APPLY; |
0f2d19dd | 2852 | evap2: |
6dbd0af5 MD |
2853 | switch (SCM_TYP7 (proc)) |
2854 | { /* have two arguments */ | |
2855 | case scm_tc7_subr_2: | |
2856 | case scm_tc7_subr_2o: | |
2857 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2858 | case scm_tc7_lsubr: | |
0f2d19dd | 2859 | #ifdef DEVAL |
6dbd0af5 MD |
2860 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2861 | #else | |
2862 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2863 | #endif |
6dbd0af5 MD |
2864 | case scm_tc7_lsubr_2: |
2865 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2866 | case scm_tc7_rpsubr: | |
2867 | case scm_tc7_asubr: | |
2868 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
0717dfd8 | 2869 | case scm_tc7_smob: |
68b06924 | 2870 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 2871 | goto badfun; |
68b06924 | 2872 | RETURN (SCM_SMOB_APPLY_2 (proc, t.arg1, arg2)); |
6dbd0af5 MD |
2873 | cclon: |
2874 | case scm_tc7_cclo: | |
0f2d19dd | 2875 | #ifdef DEVAL |
195847fa MD |
2876 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2877 | scm_cons (proc, debug.info->a.args), | |
2878 | SCM_EOL)); | |
0f2d19dd | 2879 | #else |
195847fa MD |
2880 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2881 | scm_cons2 (proc, t.arg1, | |
2882 | scm_cons (arg2, | |
2883 | scm_eval_args (x, | |
2884 | env, | |
2885 | proc))), | |
2886 | SCM_EOL)); | |
6dbd0af5 | 2887 | #endif |
0c32d76c | 2888 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2889 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2890 | { | |
195847fa | 2891 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2892 | #ifdef DEVAL |
2893 | arg2 = debug.info->a.args; | |
2894 | #else | |
2895 | arg2 = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2896 | #endif | |
f3d2630a MD |
2897 | goto type_dispatch; |
2898 | } | |
2899 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2900 | goto badfun; |
2901 | else | |
0c32d76c | 2902 | { |
195847fa | 2903 | operatorn: |
0c32d76c | 2904 | #ifdef DEVAL |
195847fa MD |
2905 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) |
2906 | ? SCM_ENTITY_PROCEDURE (proc) | |
2907 | : SCM_OPERATOR_PROCEDURE (proc), | |
2908 | scm_cons (proc, debug.info->a.args), | |
2909 | SCM_EOL)); | |
2910 | #else | |
2911 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) | |
2912 | ? SCM_ENTITY_PROCEDURE (proc) | |
2913 | : SCM_OPERATOR_PROCEDURE (proc), | |
2914 | scm_cons2 (proc, t.arg1, | |
2915 | scm_cons (arg2, | |
2916 | scm_eval_args (x, | |
2917 | env, | |
2918 | proc))), | |
2919 | SCM_EOL)); | |
2920 | #endif | |
0c32d76c | 2921 | } |
6dbd0af5 MD |
2922 | case scm_tc7_subr_0: |
2923 | case scm_tc7_cxr: | |
2924 | case scm_tc7_subr_1o: | |
2925 | case scm_tc7_subr_1: | |
2926 | case scm_tc7_subr_3: | |
6dbd0af5 MD |
2927 | goto wrongnumargs; |
2928 | default: | |
2929 | goto badfun; | |
002f1a5d MD |
2930 | case scm_tc7_pws: |
2931 | proc = SCM_PROCEDURE (proc); | |
2932 | #ifdef DEVAL | |
2933 | debug.info->a.proc = proc; | |
2934 | #endif | |
2935 | if (!SCM_CLOSUREP (proc)) | |
2936 | goto evap2; | |
2937 | if (scm_badformalsp (proc, 2)) | |
2938 | goto umwrongnumargs; | |
6dbd0af5 | 2939 | case scm_tcs_closures: |
195847fa | 2940 | /* clos2: */ |
0f2d19dd | 2941 | #ifdef DEVAL |
da7f71d7 MD |
2942 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2943 | debug.info->a.args, | |
2944 | SCM_ENV (proc)); | |
0f2d19dd | 2945 | #else |
da7f71d7 MD |
2946 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2947 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2948 | #endif |
6dbd0af5 MD |
2949 | x = SCM_CODE (proc); |
2950 | goto cdrxbegin; | |
2951 | } | |
0f2d19dd | 2952 | } |
cf7c17e9 | 2953 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2954 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2955 | goto wrongnumargs; | |
2956 | #endif | |
0f2d19dd | 2957 | #ifdef DEVAL |
6dbd0af5 | 2958 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2959 | scm_deval_args (x, env, proc, |
2960 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2961 | #endif |
6dbd0af5 | 2962 | ENTER_APPLY; |
89efbff4 | 2963 | evap3: |
6dbd0af5 MD |
2964 | switch (SCM_TYP7 (proc)) |
2965 | { /* have 3 or more arguments */ | |
0f2d19dd | 2966 | #ifdef DEVAL |
6dbd0af5 MD |
2967 | case scm_tc7_subr_3: |
2968 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2969 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2970 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 2971 | case scm_tc7_asubr: |
399dedcc MD |
2972 | #ifdef BUILTIN_RPASUBR |
2973 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2974 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2975 | do |
2976 | { | |
2977 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
2978 | arg2 = SCM_CDR (arg2); | |
2979 | } | |
2980 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
2981 | RETURN (t.arg1) |
2982 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2983 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2984 | #ifdef BUILTIN_RPASUBR |
2985 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2986 | RETURN (SCM_BOOL_F) | |
2987 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2988 | do |
2989 | { | |
2990 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
2991 | RETURN (SCM_BOOL_F) | |
2992 | arg2 = SCM_CAR (t.arg1); | |
2993 | t.arg1 = SCM_CDR (t.arg1); | |
2994 | } | |
2995 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
2996 | RETURN (SCM_BOOL_T) |
2997 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
2998 | RETURN (SCM_APPLY (proc, t.arg1, |
2999 | scm_acons (arg2, | |
3000 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
3001 | SCM_EOL))) | |
71d3aa6d | 3002 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 3003 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
3004 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
3005 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
3006 | case scm_tc7_lsubr: |
3007 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0717dfd8 | 3008 | case scm_tc7_smob: |
68b06924 | 3009 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 3010 | goto badfun; |
68b06924 KN |
3011 | RETURN (SCM_SMOB_APPLY_3 (proc, t.arg1, arg2, |
3012 | SCM_CDDR (debug.info->a.args))); | |
6dbd0af5 MD |
3013 | case scm_tc7_cclo: |
3014 | goto cclon; | |
89efbff4 MD |
3015 | case scm_tc7_pws: |
3016 | proc = SCM_PROCEDURE (proc); | |
3017 | debug.info->a.proc = proc; | |
002f1a5d MD |
3018 | if (!SCM_CLOSUREP (proc)) |
3019 | goto evap3; | |
3020 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), debug.info->a.args)) | |
3021 | goto umwrongnumargs; | |
6dbd0af5 | 3022 | case scm_tcs_closures: |
b7ff98dd | 3023 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 3024 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
3025 | debug.info->a.args, |
3026 | SCM_ENV (proc)); | |
3027 | x = SCM_CODE (proc); | |
3028 | goto cdrxbegin; | |
3029 | #else /* DEVAL */ | |
3030 | case scm_tc7_subr_3: | |
3031 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
3032 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
3033 | case scm_tc7_asubr: | |
399dedcc | 3034 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
3035 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
3036 | do | |
3037 | { | |
3038 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
3039 | x = SCM_CDR(x); | |
3040 | } | |
3041 | while (SCM_NIMP (x)); | |
399dedcc MD |
3042 | RETURN (t.arg1) |
3043 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3044 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3045 | #ifdef BUILTIN_RPASUBR |
3046 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3047 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
3048 | do |
3049 | { | |
3050 | t.arg1 = EVALCAR (x, env); | |
3051 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
3052 | RETURN (SCM_BOOL_F) | |
3053 | arg2 = t.arg1; | |
3054 | x = SCM_CDR (x); | |
3055 | } | |
3056 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
3057 | RETURN (SCM_BOOL_T) |
3058 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 3059 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
3060 | scm_acons (arg2, |
3061 | scm_eval_args (x, env, proc), | |
3062 | SCM_EOL))); | |
71d3aa6d | 3063 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 3064 | case scm_tc7_lsubr_2: |
680ed4a8 | 3065 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 3066 | case scm_tc7_lsubr: |
680ed4a8 MD |
3067 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
3068 | arg2, | |
3069 | scm_eval_args (x, env, proc)))); | |
0717dfd8 | 3070 | case scm_tc7_smob: |
68b06924 | 3071 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 3072 | goto badfun; |
68b06924 KN |
3073 | RETURN (SCM_SMOB_APPLY_3 (proc, t.arg1, arg2, |
3074 | scm_eval_args (x, env, proc))); | |
6dbd0af5 MD |
3075 | case scm_tc7_cclo: |
3076 | goto cclon; | |
89efbff4 MD |
3077 | case scm_tc7_pws: |
3078 | proc = SCM_PROCEDURE (proc); | |
002f1a5d MD |
3079 | if (!SCM_CLOSUREP (proc)) |
3080 | goto evap3; | |
3081 | { | |
3082 | SCM formals = SCM_CAR (SCM_CODE (proc)); | |
3083 | if (SCM_NULLP (formals) | |
3084 | || (SCM_CONSP (formals) | |
3085 | && (SCM_NULLP (SCM_CDR (formals)) | |
3086 | || (SCM_CONSP (SCM_CDR (formals)) | |
3087 | && scm_badargsp (SCM_CDDR (formals), x))))) | |
3088 | goto umwrongnumargs; | |
3089 | } | |
6dbd0af5 MD |
3090 | case scm_tcs_closures: |
3091 | #ifdef DEVAL | |
b7ff98dd | 3092 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 3093 | #endif |
e2806c10 | 3094 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
3095 | scm_cons2 (t.arg1, |
3096 | arg2, | |
3097 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
3098 | SCM_ENV (proc)); |
3099 | x = SCM_CODE (proc); | |
3100 | goto cdrxbegin; | |
0f2d19dd | 3101 | #endif /* DEVAL */ |
0c32d76c | 3102 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3103 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3104 | { | |
3105 | #ifdef DEVAL | |
3106 | arg2 = debug.info->a.args; | |
3107 | #else | |
3108 | arg2 = scm_cons2 (t.arg1, arg2, scm_eval_args (x, env, proc)); | |
3109 | #endif | |
195847fa | 3110 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
3111 | goto type_dispatch; |
3112 | } | |
3113 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3114 | goto badfun; |
3115 | else | |
195847fa | 3116 | goto operatorn; |
6dbd0af5 MD |
3117 | case scm_tc7_subr_2: |
3118 | case scm_tc7_subr_1o: | |
3119 | case scm_tc7_subr_2o: | |
3120 | case scm_tc7_subr_0: | |
3121 | case scm_tc7_cxr: | |
3122 | case scm_tc7_subr_1: | |
6dbd0af5 MD |
3123 | goto wrongnumargs; |
3124 | default: | |
3125 | goto badfun; | |
3126 | } | |
0f2d19dd JB |
3127 | } |
3128 | #ifdef DEVAL | |
6dbd0af5 | 3129 | exit: |
b6d75948 | 3130 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3131 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3132 | { |
b7ff98dd MD |
3133 | SCM_CLEAR_TRACED_FRAME (debug); |
3134 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3135 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3136 | else |
3137 | { | |
5f144b10 GH |
3138 | int first; |
3139 | SCM val = scm_make_continuation (&first); | |
3140 | ||
3141 | if (first) | |
3142 | t.arg1 = val; | |
3143 | else | |
6dbd0af5 | 3144 | { |
5f144b10 | 3145 | proc = val; |
6dbd0af5 MD |
3146 | goto ret; |
3147 | } | |
3148 | } | |
2f0d1375 | 3149 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3150 | } |
3151 | ret: | |
1646d37b | 3152 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3153 | return proc; |
3154 | #endif | |
3155 | } | |
3156 | ||
6dbd0af5 MD |
3157 | |
3158 | /* SECTION: This code is compiled once. | |
3159 | */ | |
3160 | ||
0f2d19dd JB |
3161 | #ifndef DEVAL |
3162 | ||
82a2622a | 3163 | /* This code processes the arguments to apply: |
b145c172 JB |
3164 | |
3165 | (apply PROC ARG1 ... ARGS) | |
3166 | ||
82a2622a JB |
3167 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
3168 | ... arguments onto the front of ARGS, and returns the resulting | |
3169 | list. Note that ARGS is a list; thus, the argument to this | |
3170 | function is a list whose last element is a list. | |
3171 | ||
3172 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
3173 | result. apply:nconc2last takes care of building the list of |
3174 | arguments, given (ARG1 ... ARGS). | |
3175 | ||
82a2622a JB |
3176 | Rather than do new consing, apply:nconc2last destroys its argument. |
3177 | On that topic, this code came into my care with the following | |
3178 | beautifully cryptic comment on that topic: "This will only screw | |
3179 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
3180 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 3181 | |
3b3b36dd | 3182 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
1bbd0b84 | 3183 | (SCM lst), |
b380b885 | 3184 | "") |
1bbd0b84 | 3185 | #define FUNC_NAME s_scm_nconc2last |
0f2d19dd JB |
3186 | { |
3187 | SCM *lloc; | |
c1bfcf60 | 3188 | SCM_VALIDATE_NONEMPTYLIST (1,lst); |
0f2d19dd JB |
3189 | lloc = &lst; |
3190 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 3191 | lloc = SCM_CDRLOC (*lloc); |
1bbd0b84 | 3192 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
3193 | *lloc = SCM_CAR (*lloc); |
3194 | return lst; | |
3195 | } | |
1bbd0b84 | 3196 | #undef FUNC_NAME |
0f2d19dd JB |
3197 | |
3198 | #endif /* !DEVAL */ | |
3199 | ||
6dbd0af5 MD |
3200 | |
3201 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
3202 | * It is compiled twice. | |
3203 | */ | |
3204 | ||
0f2d19dd | 3205 | #if 0 |
1cc91f1b | 3206 | |
0f2d19dd | 3207 | SCM |
6e8d25a6 | 3208 | scm_apply (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3209 | {} |
3210 | #endif | |
3211 | ||
3212 | #if 0 | |
1cc91f1b | 3213 | |
0f2d19dd | 3214 | SCM |
6e8d25a6 GB |
3215 | scm_dapply (SCM proc, SCM arg1, SCM args) |
3216 | { /* empty */ } | |
0f2d19dd JB |
3217 | #endif |
3218 | ||
1cc91f1b | 3219 | |
82a2622a JB |
3220 | /* Apply a function to a list of arguments. |
3221 | ||
3222 | This function is exported to the Scheme level as taking two | |
3223 | required arguments and a tail argument, as if it were: | |
3224 | (lambda (proc arg1 . args) ...) | |
3225 | Thus, if you just have a list of arguments to pass to a procedure, | |
3226 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
3227 | args, pass the first as ARG1, then cons any remaining fixed args | |
3228 | onto the front of your argument list, and pass that as ARGS. */ | |
3229 | ||
0f2d19dd | 3230 | SCM |
1bbd0b84 | 3231 | SCM_APPLY (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3232 | { |
3233 | #ifdef DEBUG_EXTENSIONS | |
3234 | #ifdef DEVAL | |
6dbd0af5 | 3235 | scm_debug_frame debug; |
c0ab1b8d | 3236 | scm_debug_info debug_vect_body; |
1646d37b | 3237 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 3238 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 3239 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
3240 | debug.vect[0].a.proc = proc; |
3241 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 3242 | scm_last_debug_frame = &debug; |
0f2d19dd | 3243 | #else |
b7ff98dd | 3244 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
3245 | return scm_dapply (proc, arg1, args); |
3246 | #endif | |
3247 | #endif | |
3248 | ||
3249 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
3250 | |
3251 | /* If ARGS is the empty list, then we're calling apply with only two | |
3252 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
3253 | the case, futz with things so that ARG1 is the first argument to | |
3254 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
3255 | rest. |
3256 | ||
3257 | Setting the debug apply frame args this way is pretty messy. | |
3258 | Perhaps we should store arg1 and args directly in the frame as | |
3259 | received, and let scm_frame_arguments unpack them, because that's | |
3260 | a relatively rare operation. This works for now; if the Guile | |
3261 | developer archives are still around, see Mikael's post of | |
3262 | 11-Apr-97. */ | |
0f2d19dd JB |
3263 | if (SCM_NULLP (args)) |
3264 | { | |
3265 | if (SCM_NULLP (arg1)) | |
30000774 JB |
3266 | { |
3267 | arg1 = SCM_UNDEFINED; | |
3268 | #ifdef DEVAL | |
3269 | debug.vect[0].a.args = SCM_EOL; | |
3270 | #endif | |
3271 | } | |
0f2d19dd JB |
3272 | else |
3273 | { | |
30000774 JB |
3274 | #ifdef DEVAL |
3275 | debug.vect[0].a.args = arg1; | |
3276 | #endif | |
0f2d19dd JB |
3277 | args = SCM_CDR (arg1); |
3278 | arg1 = SCM_CAR (arg1); | |
3279 | } | |
3280 | } | |
3281 | else | |
3282 | { | |
0f2d19dd | 3283 | args = scm_nconc2last (args); |
30000774 JB |
3284 | #ifdef DEVAL |
3285 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3286 | #endif | |
0f2d19dd | 3287 | } |
0f2d19dd | 3288 | #ifdef DEVAL |
b6d75948 | 3289 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
3290 | { |
3291 | SCM tmp; | |
b7ff98dd | 3292 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 3293 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3294 | else |
3295 | { | |
5f144b10 GH |
3296 | int first; |
3297 | ||
3298 | tmp = scm_make_continuation (&first); | |
3299 | if (!first) | |
6dbd0af5 MD |
3300 | goto entap; |
3301 | } | |
2f0d1375 | 3302 | scm_ithrow (scm_sym_enter_frame, scm_cons (tmp, SCM_EOL), 0); |
6dbd0af5 MD |
3303 | } |
3304 | entap: | |
3305 | ENTER_APPLY; | |
3306 | #endif | |
6dbd0af5 | 3307 | tail: |
0f2d19dd JB |
3308 | switch (SCM_TYP7 (proc)) |
3309 | { | |
3310 | case scm_tc7_subr_2o: | |
3311 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
3312 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3313 | case scm_tc7_subr_2: | |
269861c7 MD |
3314 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
3315 | wrongnumargs); | |
0f2d19dd JB |
3316 | args = SCM_CAR (args); |
3317 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3318 | case scm_tc7_subr_0: | |
3319 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
3320 | RETURN (SCM_SUBRF (proc) ()) | |
3321 | case scm_tc7_subr_1: | |
41ee56dd | 3322 | SCM_ASRTGO (!SCM_UNBNDP (arg1), wrongnumargs); |
0f2d19dd JB |
3323 | case scm_tc7_subr_1o: |
3324 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3325 | RETURN (SCM_SUBRF (proc) (arg1)) | |
3326 | case scm_tc7_cxr: | |
3327 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
0f2d19dd JB |
3328 | if (SCM_SUBRF (proc)) |
3329 | { | |
6dbd0af5 MD |
3330 | if (SCM_INUMP (arg1)) |
3331 | { | |
f8de44c1 | 3332 | RETURN (scm_make_real (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)))); |
6dbd0af5 | 3333 | } |
0f2d19dd | 3334 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
3335 | if (SCM_REALP (arg1)) |
3336 | { | |
eb42e2f0 | 3337 | RETURN (scm_make_real (SCM_DSUBRF (proc) (SCM_REAL_VALUE (arg1)))); |
6dbd0af5 | 3338 | } |
0f2d19dd | 3339 | #ifdef SCM_BIGDIG |
26d5b9b4 | 3340 | if (SCM_BIGP (arg1)) |
f8de44c1 | 3341 | RETURN (scm_make_real (SCM_DSUBRF (proc) (scm_big2dbl (arg1)))) |
0f2d19dd JB |
3342 | #endif |
3343 | floerr: | |
9de33deb | 3344 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), arg1, |
3db4adfc | 3345 | SCM_ARG1, SCM_SYMBOL_CHARS (SCM_SNAME (proc))); |
0f2d19dd | 3346 | } |
3201d763 | 3347 | proc = SCM_SNAME (proc); |
0f2d19dd | 3348 | { |
b5c2579a | 3349 | char *chrs = SCM_SYMBOL_CHARS (proc) + SCM_SYMBOL_LENGTH (proc) - 1; |
0f2d19dd JB |
3350 | while ('c' != *--chrs) |
3351 | { | |
0c95b57d | 3352 | SCM_ASSERT (SCM_CONSP (arg1), |
3db4adfc | 3353 | arg1, SCM_ARG1, SCM_SYMBOL_CHARS (proc)); |
0f2d19dd JB |
3354 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); |
3355 | } | |
3356 | RETURN (arg1) | |
3357 | } | |
3358 | case scm_tc7_subr_3: | |
f1e06a96 MD |
3359 | SCM_ASRTGO (SCM_NNULLP (args) |
3360 | && SCM_NNULLP (SCM_CDR (args)) | |
3361 | && SCM_NULLP (SCM_CDDR (args)), | |
3362 | wrongnumargs); | |
0f2d19dd JB |
3363 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) |
3364 | case scm_tc7_lsubr: | |
3365 | #ifdef DEVAL | |
6dbd0af5 | 3366 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
3367 | #else |
3368 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
3369 | #endif | |
3370 | case scm_tc7_lsubr_2: | |
0c95b57d | 3371 | SCM_ASRTGO (SCM_CONSP (args), wrongnumargs); |
0f2d19dd JB |
3372 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) |
3373 | case scm_tc7_asubr: | |
3374 | if (SCM_NULLP (args)) | |
3375 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
3376 | while (SCM_NIMP (args)) | |
3377 | { | |
3378 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3379 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
3380 | args = SCM_CDR (args); | |
3381 | } | |
3382 | RETURN (arg1); | |
3383 | case scm_tc7_rpsubr: | |
3384 | if (SCM_NULLP (args)) | |
3385 | RETURN (SCM_BOOL_T); | |
3386 | while (SCM_NIMP (args)) | |
3387 | { | |
3388 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3389 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
3390 | RETURN (SCM_BOOL_F); | |
3391 | arg1 = SCM_CAR (args); | |
3392 | args = SCM_CDR (args); | |
3393 | } | |
3394 | RETURN (SCM_BOOL_T); | |
3395 | case scm_tcs_closures: | |
3396 | #ifdef DEVAL | |
6dbd0af5 | 3397 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
3398 | #else |
3399 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3400 | #endif | |
cf7c17e9 | 3401 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3402 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3403 | goto wrongnumargs; | |
3404 | #endif | |
1609038c MD |
3405 | |
3406 | /* Copy argument list */ | |
3407 | if (SCM_IMP (arg1)) | |
3408 | args = arg1; | |
3409 | else | |
3410 | { | |
3411 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
cabe682c | 3412 | while (arg1 = SCM_CDR (arg1), SCM_CONSP (arg1)) |
1609038c MD |
3413 | { |
3414 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3415 | SCM_UNSPECIFIED)); | |
3416 | tl = SCM_CDR (tl); | |
3417 | } | |
3418 | SCM_SETCDR (tl, arg1); | |
3419 | } | |
3420 | ||
3421 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
2ddb0920 | 3422 | proc = SCM_CDR (SCM_CODE (proc)); |
e791c18f MD |
3423 | again: |
3424 | arg1 = proc; | |
3425 | while (SCM_NNULLP (arg1 = SCM_CDR (arg1))) | |
2ddb0920 MD |
3426 | { |
3427 | if (SCM_IMP (SCM_CAR (proc))) | |
3428 | { | |
3429 | if (SCM_ISYMP (SCM_CAR (proc))) | |
3430 | { | |
3431 | proc = scm_m_expand_body (proc, args); | |
e791c18f | 3432 | goto again; |
2ddb0920 | 3433 | } |
2ddb0920 MD |
3434 | } |
3435 | else | |
e791c18f MD |
3436 | SCM_CEVAL (SCM_CAR (proc), args); |
3437 | proc = arg1; | |
2ddb0920 | 3438 | } |
e791c18f | 3439 | RETURN (EVALCAR (proc, args)); |
0717dfd8 | 3440 | case scm_tc7_smob: |
68b06924 | 3441 | if (!SCM_SMOB_APPLICABLE_P (proc)) |
0717dfd8 | 3442 | goto badproc; |
afa38f6e | 3443 | if (SCM_UNBNDP (arg1)) |
68b06924 | 3444 | RETURN (SCM_SMOB_APPLY_0 (proc)) |
afa38f6e | 3445 | else if (SCM_NULLP (args)) |
68b06924 | 3446 | RETURN (SCM_SMOB_APPLY_1 (proc, arg1)) |
0717dfd8 | 3447 | else if (SCM_NULLP (SCM_CDR (args))) |
68b06924 | 3448 | RETURN (SCM_SMOB_APPLY_2 (proc, arg1, SCM_CAR (args))) |
0717dfd8 | 3449 | else |
68b06924 | 3450 | RETURN (SCM_SMOB_APPLY_3 (proc, arg1, SCM_CAR (args), SCM_CDR (args))); |
0f2d19dd JB |
3451 | case scm_tc7_cclo: |
3452 | #ifdef DEVAL | |
6dbd0af5 MD |
3453 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3454 | arg1 = proc; | |
3455 | proc = SCM_CCLO_SUBR (proc); | |
3456 | debug.vect[0].a.proc = proc; | |
3457 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3458 | #else |
3459 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3460 | arg1 = proc; |
3461 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3462 | #endif |
0f2d19dd | 3463 | goto tail; |
89efbff4 MD |
3464 | case scm_tc7_pws: |
3465 | proc = SCM_PROCEDURE (proc); | |
3466 | #ifdef DEVAL | |
3467 | debug.vect[0].a.proc = proc; | |
3468 | #endif | |
3469 | goto tail; | |
0c32d76c | 3470 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3471 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3472 | { | |
3473 | #ifdef DEVAL | |
3474 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3475 | #else | |
3476 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3477 | #endif | |
195847fa | 3478 | RETURN (scm_apply_generic (proc, args)); |
f3d2630a MD |
3479 | } |
3480 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3481 | goto badproc; |
3482 | else | |
da7f71d7 MD |
3483 | { |
3484 | #ifdef DEVAL | |
3485 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3486 | #else | |
3487 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3488 | #endif | |
3489 | arg1 = proc; | |
195847fa MD |
3490 | proc = (SCM_I_ENTITYP (proc) |
3491 | ? SCM_ENTITY_PROCEDURE (proc) | |
3492 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 MD |
3493 | #ifdef DEVAL |
3494 | debug.vect[0].a.proc = proc; | |
3495 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3496 | #endif | |
195847fa MD |
3497 | if (SCM_NIMP (proc)) |
3498 | goto tail; | |
3499 | else | |
3500 | goto badproc; | |
da7f71d7 | 3501 | } |
0f2d19dd | 3502 | wrongnumargs: |
f5bf2977 | 3503 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3504 | default: |
3505 | badproc: | |
3506 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3507 | RETURN (arg1); | |
3508 | } | |
3509 | #ifdef DEVAL | |
6dbd0af5 | 3510 | exit: |
b6d75948 | 3511 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3512 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3513 | { |
b7ff98dd MD |
3514 | SCM_CLEAR_TRACED_FRAME (debug); |
3515 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3516 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3517 | else |
3518 | { | |
5f144b10 GH |
3519 | int first; |
3520 | SCM val = scm_make_continuation (&first); | |
3521 | ||
3522 | if (first) | |
3523 | arg1 = val; | |
3524 | else | |
6dbd0af5 | 3525 | { |
5f144b10 | 3526 | proc = val; |
6dbd0af5 MD |
3527 | goto ret; |
3528 | } | |
3529 | } | |
2f0d1375 | 3530 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3531 | } |
3532 | ret: | |
1646d37b | 3533 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3534 | return proc; |
3535 | #endif | |
3536 | } | |
3537 | ||
6dbd0af5 MD |
3538 | |
3539 | /* SECTION: The rest of this file is only read once. | |
3540 | */ | |
3541 | ||
0f2d19dd JB |
3542 | #ifndef DEVAL |
3543 | ||
d9c393f5 JB |
3544 | /* Typechecking for multi-argument MAP and FOR-EACH. |
3545 | ||
47c3f06d | 3546 | Verify that each element of the vector ARGV, except for the first, |
d9c393f5 | 3547 | is a proper list whose length is LEN. Attribute errors to WHO, |
47c3f06d | 3548 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ |
d9c393f5 | 3549 | static inline void |
47c3f06d MD |
3550 | check_map_args (SCM argv, |
3551 | long len, | |
3552 | SCM gf, | |
3553 | SCM proc, | |
3554 | SCM args, | |
3555 | const char *who) | |
d9c393f5 | 3556 | { |
47c3f06d | 3557 | SCM *ve = SCM_VELTS (argv); |
d9c393f5 JB |
3558 | int i; |
3559 | ||
b5c2579a | 3560 | for (i = SCM_VECTOR_LENGTH (argv) - 1; i >= 1; i--) |
d9c393f5 JB |
3561 | { |
3562 | int elt_len = scm_ilength (ve[i]); | |
3563 | ||
3564 | if (elt_len < 0) | |
47c3f06d MD |
3565 | { |
3566 | if (gf) | |
3567 | scm_apply_generic (gf, scm_cons (proc, args)); | |
3568 | else | |
3569 | scm_wrong_type_arg (who, i + 2, ve[i]); | |
3570 | } | |
d9c393f5 JB |
3571 | |
3572 | if (elt_len != len) | |
3573 | scm_out_of_range (who, ve[i]); | |
3574 | } | |
3575 | ||
5d2b97cd | 3576 | scm_remember_upto_here_1 (argv); |
d9c393f5 JB |
3577 | } |
3578 | ||
3579 | ||
47c3f06d | 3580 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
1cc91f1b | 3581 | |
368bf056 MD |
3582 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3583 | sequentially, starting with the first element(s). This is used in | |
8878f040 | 3584 | evalext.c where the Scheme procedure `map-in-order', which guarantees |
368bf056 | 3585 | sequential behaviour, is implemented using scm_map. If the |
8878f040 | 3586 | behaviour changes, we need to update `map-in-order'. |
368bf056 MD |
3587 | */ |
3588 | ||
0f2d19dd | 3589 | SCM |
1bbd0b84 | 3590 | scm_map (SCM proc, SCM arg1, SCM args) |
af45e3b0 | 3591 | #define FUNC_NAME s_map |
0f2d19dd | 3592 | { |
d9c393f5 | 3593 | long i, len; |
0f2d19dd JB |
3594 | SCM res = SCM_EOL; |
3595 | SCM *pres = &res; | |
3596 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3597 | ||
d9c393f5 | 3598 | len = scm_ilength (arg1); |
47c3f06d MD |
3599 | SCM_GASSERTn (len >= 0, |
3600 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
af45e3b0 | 3601 | SCM_VALIDATE_REST_ARGUMENT (args); |
0f2d19dd JB |
3602 | if (SCM_NULLP (args)) |
3603 | { | |
3604 | while (SCM_NIMP (arg1)) | |
3605 | { | |
47c3f06d MD |
3606 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), |
3607 | SCM_EOL); | |
a23afe53 | 3608 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3609 | arg1 = SCM_CDR (arg1); |
3610 | } | |
3611 | return res; | |
3612 | } | |
47c3f06d | 3613 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3614 | ve = SCM_VELTS (args); |
cf7c17e9 | 3615 | #ifndef SCM_RECKLESS |
47c3f06d | 3616 | check_map_args (args, len, g_map, proc, arg1, s_map); |
0f2d19dd JB |
3617 | #endif |
3618 | while (1) | |
3619 | { | |
3620 | arg1 = SCM_EOL; | |
b5c2579a | 3621 | for (i = SCM_VECTOR_LENGTH (args) - 1; i >= 0; i--) |
0f2d19dd | 3622 | { |
d9c393f5 JB |
3623 | if (SCM_IMP (ve[i])) |
3624 | return res; | |
0f2d19dd JB |
3625 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); |
3626 | ve[i] = SCM_CDR (ve[i]); | |
3627 | } | |
3628 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3629 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3630 | } |
3631 | } | |
af45e3b0 | 3632 | #undef FUNC_NAME |
0f2d19dd JB |
3633 | |
3634 | ||
47c3f06d | 3635 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
1cc91f1b | 3636 | |
0f2d19dd | 3637 | SCM |
1bbd0b84 | 3638 | scm_for_each (SCM proc, SCM arg1, SCM args) |
af45e3b0 | 3639 | #define FUNC_NAME s_for_each |
0f2d19dd JB |
3640 | { |
3641 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
d9c393f5 | 3642 | long i, len; |
d9c393f5 | 3643 | len = scm_ilength (arg1); |
47c3f06d MD |
3644 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), |
3645 | SCM_ARG2, s_for_each); | |
af45e3b0 | 3646 | SCM_VALIDATE_REST_ARGUMENT (args); |
0f2d19dd JB |
3647 | if SCM_NULLP (args) |
3648 | { | |
3649 | while SCM_NIMP (arg1) | |
3650 | { | |
0f2d19dd JB |
3651 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); |
3652 | arg1 = SCM_CDR (arg1); | |
3653 | } | |
3654 | return SCM_UNSPECIFIED; | |
3655 | } | |
47c3f06d | 3656 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3657 | ve = SCM_VELTS (args); |
cf7c17e9 | 3658 | #ifndef SCM_RECKLESS |
47c3f06d | 3659 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); |
0f2d19dd JB |
3660 | #endif |
3661 | while (1) | |
3662 | { | |
3663 | arg1 = SCM_EOL; | |
b5c2579a | 3664 | for (i = SCM_VECTOR_LENGTH (args) - 1; i >= 0; i--) |
0f2d19dd JB |
3665 | { |
3666 | if SCM_IMP | |
3667 | (ve[i]) return SCM_UNSPECIFIED; | |
3668 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3669 | ve[i] = SCM_CDR (ve[i]); | |
3670 | } | |
3671 | scm_apply (proc, arg1, SCM_EOL); | |
3672 | } | |
3673 | } | |
af45e3b0 | 3674 | #undef FUNC_NAME |
0f2d19dd | 3675 | |
1cc91f1b | 3676 | |
0f2d19dd | 3677 | SCM |
6e8d25a6 | 3678 | scm_closure (SCM code, SCM env) |
0f2d19dd JB |
3679 | { |
3680 | register SCM z; | |
3681 | SCM_NEWCELL (z); | |
3682 | SCM_SETCODE (z, code); | |
a23afe53 | 3683 | SCM_SETENV (z, env); |
0f2d19dd JB |
3684 | return z; |
3685 | } | |
3686 | ||
3687 | ||
e841c3e0 | 3688 | scm_bits_t scm_tc16_promise; |
1cc91f1b | 3689 | |
0f2d19dd | 3690 | SCM |
6e8d25a6 | 3691 | scm_makprom (SCM code) |
0f2d19dd | 3692 | { |
cf498326 | 3693 | SCM_RETURN_NEWSMOB (scm_tc16_promise, SCM_UNPACK (code)); |
0f2d19dd JB |
3694 | } |
3695 | ||
3696 | ||
1cc91f1b | 3697 | |
0f2d19dd | 3698 | static int |
e841c3e0 | 3699 | promise_print (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 3700 | { |
19402679 | 3701 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3702 | scm_puts ("#<promise ", port); |
19402679 MD |
3703 | SCM_SET_WRITINGP (pstate, 1); |
3704 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3705 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3706 | scm_putc ('>', port); |
0f2d19dd JB |
3707 | return !0; |
3708 | } | |
3709 | ||
3710 | ||
3b3b36dd | 3711 | SCM_DEFINE (scm_force, "force", 1, 0, 0, |
1bbd0b84 | 3712 | (SCM x), |
445f675c DH |
3713 | "If the promise X has not been computed yet, compute and return\n" |
3714 | "X, otherwise just return the previously computed value.") | |
1bbd0b84 | 3715 | #define FUNC_NAME s_scm_force |
0f2d19dd | 3716 | { |
445f675c DH |
3717 | SCM_VALIDATE_SMOB (1, x, promise); |
3718 | if (!((1L << 16) & SCM_CELL_WORD_0 (x))) | |
0f2d19dd | 3719 | { |
445f675c DH |
3720 | SCM ans = scm_apply (SCM_CELL_OBJECT_1 (x), SCM_EOL, SCM_EOL); |
3721 | if (!((1L << 16) & SCM_CELL_WORD_0 (x))) | |
0f2d19dd JB |
3722 | { |
3723 | SCM_DEFER_INTS; | |
445f675c DH |
3724 | SCM_SET_CELL_OBJECT_1 (x, ans); |
3725 | SCM_SET_CELL_WORD_0 (x, SCM_CELL_WORD_0 (x) | (1L << 16)); | |
0f2d19dd JB |
3726 | SCM_ALLOW_INTS; |
3727 | } | |
3728 | } | |
445f675c | 3729 | return SCM_CELL_OBJECT_1 (x); |
0f2d19dd | 3730 | } |
1bbd0b84 | 3731 | #undef FUNC_NAME |
0f2d19dd | 3732 | |
445f675c | 3733 | |
a1ec6916 | 3734 | SCM_DEFINE (scm_promise_p, "promise?", 1, 0, 0, |
1bbd0b84 | 3735 | (SCM x), |
b380b885 MD |
3736 | "Return true if @var{obj} is a promise, i.e. a delayed computation\n" |
3737 | "(@pxref{Delayed evaluation,,,r4rs.info,The Revised^4 Report on Scheme}).") | |
1bbd0b84 | 3738 | #define FUNC_NAME s_scm_promise_p |
0f2d19dd | 3739 | { |
e841c3e0 | 3740 | return SCM_BOOL (SCM_TYP16_PREDICATE (scm_tc16_promise, x)); |
0f2d19dd | 3741 | } |
1bbd0b84 | 3742 | #undef FUNC_NAME |
0f2d19dd | 3743 | |
445f675c | 3744 | |
a1ec6916 | 3745 | SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0, |
1bbd0b84 | 3746 | (SCM xorig, SCM x, SCM y), |
11768c04 NJ |
3747 | "Create and return a new pair whose car and cdr are @var{x} and @var{y}.\n" |
3748 | "Any source properties associated with @var{xorig} are also associated\n" | |
3749 | "with the new pair.") | |
1bbd0b84 | 3750 | #define FUNC_NAME s_scm_cons_source |
26d5b9b4 MD |
3751 | { |
3752 | SCM p, z; | |
3753 | SCM_NEWCELL (z); | |
445f675c DH |
3754 | SCM_SET_CELL_OBJECT_0 (z, x); |
3755 | SCM_SET_CELL_OBJECT_1 (z, y); | |
26d5b9b4 MD |
3756 | /* Copy source properties possibly associated with xorig. */ |
3757 | p = scm_whash_lookup (scm_source_whash, xorig); | |
445f675c | 3758 | if (!SCM_IMP (p)) |
26d5b9b4 MD |
3759 | scm_whash_insert (scm_source_whash, z, p); |
3760 | return z; | |
3761 | } | |
1bbd0b84 | 3762 | #undef FUNC_NAME |
26d5b9b4 | 3763 | |
445f675c | 3764 | |
a1ec6916 | 3765 | SCM_DEFINE (scm_copy_tree, "copy-tree", 1, 0, 0, |
1bbd0b84 | 3766 | (SCM obj), |
b380b885 MD |
3767 | "Recursively copy the data tree that is bound to @var{obj}, and return a\n" |
3768 | "pointer to the new data structure. @code{copy-tree} recurses down the\n" | |
3769 | "contents of both pairs and vectors (since both cons cells and vector\n" | |
3770 | "cells may point to arbitrary objects), and stops recursing when it hits\n" | |
3771 | "any other object.") | |
1bbd0b84 | 3772 | #define FUNC_NAME s_scm_copy_tree |
0f2d19dd JB |
3773 | { |
3774 | SCM ans, tl; | |
26d5b9b4 | 3775 | if (SCM_IMP (obj)) |
ff467021 | 3776 | return obj; |
3910272e MD |
3777 | if (SCM_VECTORP (obj)) |
3778 | { | |
b5c2579a | 3779 | scm_sizet i = SCM_VECTOR_LENGTH (obj); |
00ffa0e7 | 3780 | ans = scm_c_make_vector (i, SCM_UNSPECIFIED); |
3910272e MD |
3781 | while (i--) |
3782 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3783 | return ans; | |
3784 | } | |
ff467021 | 3785 | if (SCM_NCONSP (obj)) |
0f2d19dd | 3786 | return obj; |
26d5b9b4 MD |
3787 | ans = tl = scm_cons_source (obj, |
3788 | scm_copy_tree (SCM_CAR (obj)), | |
3789 | SCM_UNSPECIFIED); | |
cabe682c | 3790 | while (obj = SCM_CDR (obj), SCM_CONSP (obj)) |
a23afe53 MD |
3791 | { |
3792 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3793 | SCM_UNSPECIFIED)); | |
3794 | tl = SCM_CDR (tl); | |
3795 | } | |
3796 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3797 | return ans; |
3798 | } | |
1bbd0b84 | 3799 | #undef FUNC_NAME |
0f2d19dd | 3800 | |
1cc91f1b | 3801 | |
4163eb72 MV |
3802 | /* We have three levels of EVAL here: |
3803 | ||
3804 | - scm_i_eval (exp, env) | |
3805 | ||
3806 | evaluates EXP in environment ENV. ENV is a lexical environment | |
3807 | structure as used by the actual tree code evaluator. When ENV is | |
3808 | a top-level environment, then changes to the current module are | |
3809 | tracked by modifying ENV so that it continues to be in sync with | |
3810 | the current module. | |
3811 | ||
3812 | - scm_primitive_eval (exp) | |
3813 | ||
3814 | evaluates EXP in the top-level environment as determined by the | |
3815 | current module. This is done by constructing a suitable | |
3816 | environment and calling scm_i_eval. Thus, changes to the | |
3817 | top-level module are tracked normally. | |
3818 | ||
3819 | - scm_eval (exp, mod) | |
3820 | ||
3821 | evaluates EXP while MOD is the current module. Thius is done by | |
3822 | setting the current module to MOD, invoking scm_primitive_eval on | |
3823 | EXP, and then restoring the current module to the value it had | |
3824 | previously. That is, while EXP is evaluated, changes to the | |
3825 | current module are tracked, but these changes do not persist when | |
3826 | scm_eval returns. | |
3827 | ||
3828 | For each level of evals, there are two variants, distinguished by a | |
3829 | _x suffix: the ordinary variant does not modify EXP while the _x | |
3830 | variant can destructively modify EXP into something completely | |
3831 | unintelligible. A Scheme data structure passed as EXP to one of the | |
3832 | _x variants should not ever be used again for anything. So when in | |
3833 | doubt, use the ordinary variant. | |
3834 | ||
3835 | */ | |
3836 | ||
68d8be66 MD |
3837 | SCM scm_system_transformer; |
3838 | ||
018008c1 MV |
3839 | /* XXX - scm_i_eval is meant to be useable for evaluation in |
3840 | non-toplevel environments, for example when used by the debugger. | |
3841 | Can the system transform deal with this? */ | |
4163eb72 | 3842 | |
0f2d19dd | 3843 | SCM |
68d8be66 | 3844 | scm_i_eval_x (SCM exp, SCM env) |
0f2d19dd | 3845 | { |
549e6ec6 MD |
3846 | SCM transformer = scm_fluid_ref (SCM_CDR (scm_system_transformer)); |
3847 | if (SCM_NIMP (transformer)) | |
68d8be66 MD |
3848 | exp = scm_apply (transformer, exp, scm_listofnull); |
3849 | return SCM_XEVAL (exp, env); | |
0f2d19dd JB |
3850 | } |
3851 | ||
68d8be66 MD |
3852 | SCM |
3853 | scm_i_eval (SCM exp, SCM env) | |
3854 | { | |
3855 | SCM transformer = scm_fluid_ref (SCM_CDR (scm_system_transformer)); | |
3856 | if (SCM_NIMP (transformer)) | |
3857 | exp = scm_apply (transformer, exp, scm_listofnull); | |
3858 | return SCM_XEVAL (scm_copy_tree (exp), env); | |
3859 | } | |
3860 | ||
3861 | SCM | |
4163eb72 | 3862 | scm_primitive_eval_x (SCM exp) |
0f2d19dd | 3863 | { |
4163eb72 MV |
3864 | SCM env = scm_top_level_env (scm_current_module_lookup_closure ()); |
3865 | return scm_i_eval_x (exp, env); | |
0f2d19dd JB |
3866 | } |
3867 | ||
4163eb72 MV |
3868 | SCM_DEFINE (scm_primitive_eval, "primitive-eval", 1, 0, 0, |
3869 | (SCM exp), | |
3870 | "Evaluate @var{epx} in the top-level environment specified by\n" | |
3871 | "the current module.") | |
3872 | #define FUNC_NAME s_scm_primitive_eval | |
3873 | { | |
3874 | SCM env = scm_top_level_env (scm_current_module_lookup_closure ()); | |
3875 | return scm_i_eval (exp, env); | |
3876 | } | |
3877 | #undef FUNC_NAME | |
3878 | ||
68d8be66 MD |
3879 | /* Eval does not take the second arg optionally. This is intentional |
3880 | * in order to be R5RS compatible, and to prepare for the new module | |
3881 | * system, where we would like to make the choice of evaluation | |
4163eb72 | 3882 | * environment explicit. */ |
549e6ec6 | 3883 | |
09074dbf DH |
3884 | static void |
3885 | change_environment (void *data) | |
3886 | { | |
3887 | SCM pair = SCM_PACK (data); | |
3888 | SCM new_module = SCM_CAR (pair); | |
aa767bc5 | 3889 | SCM old_module = scm_current_module (); |
09074dbf | 3890 | SCM_SETCDR (pair, old_module); |
aa767bc5 | 3891 | scm_set_current_module (new_module); |
09074dbf DH |
3892 | } |
3893 | ||
3894 | ||
09074dbf DH |
3895 | static void |
3896 | restore_environment (void *data) | |
3897 | { | |
3898 | SCM pair = SCM_PACK (data); | |
3899 | SCM old_module = SCM_CDR (pair); | |
aa767bc5 | 3900 | SCM new_module = scm_current_module (); |
2e9c835d | 3901 | SCM_SETCAR (pair, new_module); |
aa767bc5 | 3902 | scm_set_current_module (old_module); |
09074dbf DH |
3903 | } |
3904 | ||
4163eb72 MV |
3905 | static SCM |
3906 | inner_eval_x (void *data) | |
3907 | { | |
3908 | return scm_primitive_eval_x (SCM_PACK(data)); | |
3909 | } | |
3910 | ||
3911 | SCM | |
3912 | scm_eval_x (SCM exp, SCM module) | |
3913 | #define FUNC_NAME "eval!" | |
3914 | { | |
3915 | SCM_VALIDATE_MODULE (2, module); | |
3916 | ||
3917 | return scm_internal_dynamic_wind | |
3918 | (change_environment, inner_eval_x, restore_environment, | |
3919 | (void *) SCM_UNPACK (exp), | |
3920 | (void *) SCM_UNPACK (scm_cons (module, SCM_BOOL_F))); | |
3921 | } | |
3922 | #undef FUNC_NAME | |
3923 | ||
3924 | static SCM | |
3925 | inner_eval (void *data) | |
3926 | { | |
3927 | return scm_primitive_eval (SCM_PACK(data)); | |
3928 | } | |
09074dbf | 3929 | |
68d8be66 | 3930 | SCM_DEFINE (scm_eval, "eval", 2, 0, 0, |
4163eb72 MV |
3931 | (SCM exp, SCM module), |
3932 | "Evaluate @var{exp}, a list representing a Scheme expression,\n" | |
3933 | "in the top-level environment specified by @var{module}.\n" | |
3934 | "While @var{exp} is evaluated (using @var{primitive-eval}),\n" | |
3935 | "@var{module} is made the current module. The current module\n" | |
3936 | "is reset to its previous value when @var{eval} returns.") | |
1bbd0b84 | 3937 | #define FUNC_NAME s_scm_eval |
0f2d19dd | 3938 | { |
4163eb72 | 3939 | SCM_VALIDATE_MODULE (2, module); |
09074dbf DH |
3940 | |
3941 | return scm_internal_dynamic_wind | |
3942 | (change_environment, inner_eval, restore_environment, | |
4163eb72 MV |
3943 | (void *) SCM_UNPACK (exp), |
3944 | (void *) SCM_UNPACK (scm_cons (module, SCM_BOOL_F))); | |
0f2d19dd | 3945 | } |
1bbd0b84 | 3946 | #undef FUNC_NAME |
0f2d19dd | 3947 | |
68d8be66 | 3948 | #if (SCM_DEBUG_DEPRECATED == 0) |
1cc91f1b | 3949 | |
aa767bc5 | 3950 | /* Use scm_current_module () or scm_interaction_environment () |
68d8be66 MD |
3951 | * instead. The former is the module selected during loading of code. |
3952 | * The latter is the module in which the user of this thread currently | |
3953 | * types expressions. | |
3954 | */ | |
3955 | ||
3956 | SCM scm_top_level_lookup_closure_var; | |
3957 | ||
3958 | /* Avoid using this functionality altogether (except for implementing | |
3959 | * libguile, where you can use scm_i_eval or scm_i_eval_x). | |
3960 | * | |
4163eb72 MV |
3961 | * Applications should use either C level scm_eval_x or Scheme |
3962 | * scm_eval; or scm_primitive_eval_x or scm_primitive_eval. */ | |
68d8be66 MD |
3963 | |
3964 | SCM | |
3965 | scm_eval_3 (SCM obj, int copyp, SCM env) | |
3966 | { | |
3967 | if (copyp) | |
3968 | return scm_i_eval (obj, env); | |
3969 | else | |
3970 | return scm_i_eval_x (obj, env); | |
3971 | } | |
3972 | ||
3973 | SCM_DEFINE (scm_eval2, "eval2", 2, 0, 0, | |
3974 | (SCM obj, SCM env_thunk), | |
4163eb72 MV |
3975 | "Evaluate @var{exp}, a Scheme expression, in the environment\n" |
3976 | "designated by @var{lookup}, a symbol-lookup function." | |
3977 | "Do not use this version of eval, it does not play well\n" | |
3978 | "with the module system. Use @code{eval} or\n" | |
3979 | "@code{primitive-eval} instead.") | |
68d8be66 | 3980 | #define FUNC_NAME s_scm_eval2 |
0f2d19dd | 3981 | { |
68d8be66 | 3982 | return scm_i_eval (obj, scm_top_level_env (env_thunk)); |
0f2d19dd | 3983 | } |
68d8be66 MD |
3984 | #undef FUNC_NAME |
3985 | ||
3986 | #endif /* DEPRECATED */ | |
0f2d19dd | 3987 | |
6dbd0af5 MD |
3988 | |
3989 | /* At this point, scm_deval and scm_dapply are generated. | |
3990 | */ | |
3991 | ||
0f2d19dd | 3992 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3993 | # define DEVAL |
3994 | # include "eval.c" | |
0f2d19dd JB |
3995 | #endif |
3996 | ||
3997 | ||
1cc91f1b | 3998 | |
0f2d19dd JB |
3999 | void |
4000 | scm_init_eval () | |
0f2d19dd | 4001 | { |
33b97402 MD |
4002 | scm_init_opts (scm_evaluator_traps, |
4003 | scm_evaluator_trap_table, | |
4004 | SCM_N_EVALUATOR_TRAPS); | |
4005 | scm_init_opts (scm_eval_options_interface, | |
4006 | scm_eval_opts, | |
4007 | SCM_N_EVAL_OPTIONS); | |
4008 | ||
f99c9c28 MD |
4009 | scm_tc16_promise = scm_make_smob_type ("promise", 0); |
4010 | scm_set_smob_mark (scm_tc16_promise, scm_markcdr); | |
e841c3e0 | 4011 | scm_set_smob_print (scm_tc16_promise, promise_print); |
b8229a3b | 4012 | |
81123e6d | 4013 | scm_f_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
549e6ec6 MD |
4014 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", |
4015 | scm_make_fluid ()); | |
0f2d19dd | 4016 | |
43a912cf MD |
4017 | scm_lisp_nil = scm_sysintern ("nil", SCM_UNDEFINED); |
4018 | SCM_SETCDR (scm_lisp_nil, SCM_CAR (scm_lisp_nil)); | |
4019 | scm_lisp_nil = SCM_CAR (scm_lisp_nil); | |
4020 | scm_lisp_t = scm_sysintern ("t", SCM_UNDEFINED); | |
4021 | SCM_SETCDR (scm_lisp_t, SCM_CAR (scm_lisp_t)); | |
4022 | scm_lisp_t = SCM_CAR (scm_lisp_t); | |
73b64342 | 4023 | |
0f2d19dd | 4024 | /* acros */ |
0f2d19dd JB |
4025 | /* end of acros */ |
4026 | ||
68d8be66 | 4027 | #if SCM_DEBUG_DEPRECATED == 0 |
dc19d1d2 | 4028 | scm_top_level_lookup_closure_var = |
549e6ec6 | 4029 | scm_sysintern ("*top-level-lookup-closure*", scm_make_fluid ()); |
68d8be66 | 4030 | #endif |
0f2d19dd | 4031 | |
8dc9439f | 4032 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 4033 | #include "libguile/eval.x" |
8dc9439f | 4034 | #endif |
25eaf21a MD |
4035 | |
4036 | scm_add_feature ("delay"); | |
0f2d19dd | 4037 | } |
0f2d19dd | 4038 | |
6dbd0af5 | 4039 | #endif /* !DEVAL */ |
89e00824 ML |
4040 | |
4041 | /* | |
4042 | Local Variables: | |
4043 | c-file-style: "gnu" | |
4044 | End: | |
4045 | */ |