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e282f286 | 1 | /* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
6dbd0af5 MD |
47 | /* This file is read twice in order to produce debugging versions of |
48 | * scm_ceval and scm_apply. These functions, scm_deval and | |
49 | * scm_dapply, are produced when we define the preprocessor macro | |
50 | * DEVAL. The file is divided into sections which are treated | |
51 | * differently with respect to DEVAL. The heads of these sections are | |
52 | * marked with the string "SECTION:". | |
53 | */ | |
54 | ||
55 | ||
56 | /* SECTION: This code is compiled once. | |
0f2d19dd JB |
57 | */ |
58 | ||
59 | #ifndef DEVAL | |
60 | ||
d16332b3 JB |
61 | /* We need this to get the definitions for HAVE_ALLOCA_H, etc. */ |
62 | #include "scmconfig.h" | |
63 | ||
48b96f4b JB |
64 | /* AIX requires this to be the first thing in the file. The #pragma |
65 | directive is indented so pre-ANSI compilers will ignore it, rather | |
66 | than choke on it. */ | |
5862b540 | 67 | #ifndef __GNUC__ |
48b96f4b JB |
68 | # if HAVE_ALLOCA_H |
69 | # include <alloca.h> | |
70 | # else | |
71 | # ifdef _AIX | |
72 | #pragma alloca | |
73 | # else | |
74 | # ifndef alloca /* predefined by HP cc +Olibcalls */ | |
75 | char *alloca (); | |
76 | # endif | |
77 | # endif | |
78 | # endif | |
79 | #endif | |
80 | ||
0f2d19dd JB |
81 | #include <stdio.h> |
82 | #include "_scm.h" | |
20e6290e | 83 | #include "debug.h" |
20e6290e | 84 | #include "alist.h" |
20e6290e JB |
85 | #include "eq.h" |
86 | #include "continuations.h" | |
87 | #include "throw.h" | |
88 | #include "smob.h" | |
6cb702da | 89 | #include "macros.h" |
20e6290e JB |
90 | #include "procprop.h" |
91 | #include "hashtab.h" | |
ac46ab16 | 92 | #include "hash.h" |
20e6290e JB |
93 | #include "srcprop.h" |
94 | #include "stackchk.h" | |
0c32d76c MD |
95 | #include "objects.h" |
96 | #include "feature.h" | |
185905af | 97 | #include "modules.h" |
20e6290e | 98 | |
b6791b2e | 99 | #include "validate.h" |
20e6290e | 100 | #include "eval.h" |
89efbff4 | 101 | |
61364ba6 MD |
102 | SCM (*scm_memoize_method) (SCM, SCM); |
103 | ||
0f2d19dd JB |
104 | \f |
105 | ||
6dbd0af5 MD |
106 | /* The evaluator contains a plethora of EVAL symbols. |
107 | * This is an attempt at explanation. | |
108 | * | |
109 | * The following macros should be used in code which is read twice | |
110 | * (where the choice of evaluator is hard soldered): | |
111 | * | |
112 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
113 | * Originally, it is defined to scm_ceval, but is redefined to | |
114 | * scm_deval during the second pass. | |
115 | * | |
116 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
117 | * only side effects of expressions matter. All immediates are | |
118 | * ignored. | |
119 | * | |
6cb702da | 120 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
121 | * immediate. (This macro never calls an evaluator.) |
122 | * | |
123 | * EVALCAR evaluates the car of an expression. | |
124 | * | |
125 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
126 | * car is a lisp cell. | |
127 | * | |
128 | * The following macros should be used in code which is read once | |
129 | * (where the choice of evaluator is dynamic): | |
130 | * | |
6cb702da | 131 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
132 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
133 | * mode. | |
134 | * | |
6cb702da | 135 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
136 | * depending on the debugging mode. |
137 | * | |
138 | * The main motivation for keeping this plethora is efficiency | |
139 | * together with maintainability (=> locality of code). | |
140 | */ | |
141 | ||
6cb702da | 142 | #define SCM_CEVAL scm_ceval |
7d2b68a8 | 143 | #define SIDEVAL(x, env) if (SCM_NIMP (x)) SCM_CEVAL((x), (env)) |
6cb702da | 144 | |
7d2b68a8 MD |
145 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR (x)) \ |
146 | ? *scm_lookupcar (x, env, 1) \ | |
147 | : SCM_CEVAL (SCM_CAR (x), env)) | |
0f2d19dd | 148 | |
7d2b68a8 MD |
149 | #define EVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \ |
150 | ? (SCM_IMP (SCM_CAR (x)) \ | |
151 | ? SCM_EVALIM (SCM_CAR (x), env) \ | |
152 | : SCM_GLOC_VAL (SCM_CAR (x))) \ | |
153 | : EVALCELLCAR (x, env)) | |
0f2d19dd | 154 | |
e2806c10 | 155 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
156 | |
157 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 158 | |
0f2d19dd | 159 | SCM * |
6e8d25a6 | 160 | scm_ilookup (SCM iloc, SCM env) |
0f2d19dd JB |
161 | { |
162 | register int ir = SCM_IFRAME (iloc); | |
163 | register SCM er = env; | |
164 | for (; 0 != ir; --ir) | |
165 | er = SCM_CDR (er); | |
166 | er = SCM_CAR (er); | |
167 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
168 | er = SCM_CDR (er); | |
169 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
170 | return SCM_CDRLOC (er); |
171 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
172 | } |
173 | #endif | |
174 | ||
f8769b1d MV |
175 | #ifdef USE_THREADS |
176 | ||
177 | /* The Lookup Car Race | |
178 | - by Eva Luator | |
179 | ||
180 | Memoization of variables and special forms is done while executing | |
181 | the code for the first time. As long as there is only one thread | |
182 | everything is fine, but as soon as two threads execute the same | |
183 | code concurrently `for the first time' they can come into conflict. | |
184 | ||
185 | This memoization includes rewriting variable references into more | |
186 | efficient forms and expanding macros. Furthermore, macro expansion | |
187 | includes `compiling' special forms like `let', `cond', etc. into | |
188 | tree-code instructions. | |
189 | ||
190 | There shouldn't normally be a problem with memoizing local and | |
191 | global variable references (into ilocs and glocs), because all | |
192 | threads will mutate the code in *exactly* the same way and (if I | |
193 | read the C code correctly) it is not possible to observe a half-way | |
194 | mutated cons cell. The lookup procedure can handle this | |
195 | transparently without any critical sections. | |
196 | ||
197 | It is different with macro expansion, because macro expansion | |
198 | happens outside of the lookup procedure and can't be | |
199 | undone. Therefore it can't cope with it. It has to indicate | |
200 | failure when it detects a lost race and hope that the caller can | |
201 | handle it. Luckily, it turns out that this is the case. | |
202 | ||
203 | An example to illustrate this: Suppose that the follwing form will | |
204 | be memoized concurrently by two threads | |
205 | ||
206 | (let ((x 12)) x) | |
207 | ||
208 | Let's first examine the lookup of X in the body. The first thread | |
209 | decides that it has to find the symbol "x" in the environment and | |
210 | starts to scan it. Then the other thread takes over and actually | |
211 | overtakes the first. It looks up "x" and substitutes an | |
212 | appropriate iloc for it. Now the first thread continues and | |
213 | completes its lookup. It comes to exactly the same conclusions as | |
214 | the second one and could - without much ado - just overwrite the | |
215 | iloc with the same iloc. | |
216 | ||
217 | But let's see what will happen when the race occurs while looking | |
218 | up the symbol "let" at the start of the form. It could happen that | |
219 | the second thread interrupts the lookup of the first thread and not | |
220 | only substitutes a gloc for it but goes right ahead and replaces it | |
221 | with the compiled form (#@let* (x 12) x). Now, when the first | |
222 | thread completes its lookup, it would replace the #@let* with a | |
223 | gloc pointing to the "let" binding, effectively reverting the form | |
224 | to (let (x 12) x). This is wrong. It has to detect that it has | |
225 | lost the race and the evaluator has to reconsider the changed form | |
226 | completely. | |
227 | ||
228 | This race condition could be resolved with some kind of traffic | |
229 | light (like mutexes) around scm_lookupcar, but I think that it is | |
230 | best to avoid them in this case. They would serialize memoization | |
231 | completely and because lookup involves calling arbitrary Scheme | |
232 | code (via the lookup-thunk), threads could be blocked for an | |
233 | arbitrary amount of time or even deadlock. But with the current | |
234 | solution a lot of unnecessary work is potentially done. */ | |
235 | ||
236 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
237 | return NULL to indicate a failed lookup due to some race conditions | |
238 | between threads. This only happens when VLOC is the first cell of | |
239 | a special form that will eventually be memoized (like `let', etc.) | |
240 | In that case the whole lookup is bogus and the caller has to | |
241 | reconsider the complete special form. | |
242 | ||
243 | SCM_LOOKUPCAR is still there, of course. It just calls | |
244 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
245 | should only be called when it is known that VLOC is not the first | |
246 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
26d5b9b4 MD |
247 | for NULL. I think I've found the only places where this |
248 | applies. */ | |
f8769b1d MV |
249 | |
250 | #endif /* USE_THREADS */ | |
1cc91f1b | 251 | |
26d5b9b4 MD |
252 | /* scm_lookupcar returns a pointer to this when a variable could not |
253 | be found and it should not throw an error. Never assign to this. | |
254 | */ | |
255 | static scm_cell undef_cell = { SCM_UNDEFINED, SCM_UNDEFINED }; | |
256 | ||
f25f761d GH |
257 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
258 | ||
d0b7bad7 | 259 | #ifdef USE_THREADS |
8ecf1f13 | 260 | static SCM * |
26d5b9b4 | 261 | scm_lookupcar1 (SCM vloc, SCM genv, int check) |
d0b7bad7 MD |
262 | #else |
263 | SCM * | |
26d5b9b4 | 264 | scm_lookupcar (SCM vloc, SCM genv, int check) |
d0b7bad7 | 265 | #endif |
0f2d19dd JB |
266 | { |
267 | SCM env = genv; | |
e3173f93 JB |
268 | register SCM *al, fl, var = SCM_CAR (vloc); |
269 | #ifdef USE_THREADS | |
270 | register SCM var2 = var; | |
271 | #endif | |
0f2d19dd JB |
272 | #ifdef MEMOIZE_LOCALS |
273 | register SCM iloc = SCM_ILOC00; | |
274 | #endif | |
275 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
276 | { | |
277 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
278 | break; | |
a23afe53 | 279 | al = SCM_CARLOC (env); |
0f2d19dd JB |
280 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
281 | { | |
282 | if (SCM_NCONSP (fl)) | |
33b97402 | 283 | { |
0f2d19dd JB |
284 | if (fl == var) |
285 | { | |
286 | #ifdef MEMOIZE_LOCALS | |
f8769b1d MV |
287 | #ifdef USE_THREADS |
288 | if (SCM_CAR (vloc) != var) | |
289 | goto race; | |
290 | #endif | |
a23afe53 | 291 | SCM_SETCAR (vloc, iloc + SCM_ICDR); |
0f2d19dd | 292 | #endif |
a23afe53 | 293 | return SCM_CDRLOC (*al); |
0f2d19dd | 294 | } |
33b97402 MD |
295 | else |
296 | break; | |
297 | } | |
a23afe53 | 298 | al = SCM_CDRLOC (*al); |
0f2d19dd JB |
299 | if (SCM_CAR (fl) == var) |
300 | { | |
301 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 302 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
303 | if (SCM_UNBNDP (SCM_CAR (*al))) |
304 | { | |
305 | env = SCM_EOL; | |
306 | goto errout; | |
307 | } | |
f8769b1d MV |
308 | #endif |
309 | #ifdef USE_THREADS | |
310 | if (SCM_CAR (vloc) != var) | |
311 | goto race; | |
0f2d19dd | 312 | #endif |
a23afe53 | 313 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 314 | #endif |
a23afe53 | 315 | return SCM_CARLOC (*al); |
0f2d19dd JB |
316 | } |
317 | #ifdef MEMOIZE_LOCALS | |
318 | iloc += SCM_IDINC; | |
319 | #endif | |
320 | } | |
321 | #ifdef MEMOIZE_LOCALS | |
f1267706 | 322 | iloc = SCM_PACK ((~SCM_IDSTMSK) & SCM_UNPACK(iloc + SCM_IFRINC)); |
0f2d19dd JB |
323 | #endif |
324 | } | |
325 | { | |
326 | SCM top_thunk, vcell; | |
327 | if (SCM_NIMP(env)) | |
328 | { | |
329 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
330 | env = SCM_CDR (env); | |
331 | } | |
332 | else | |
333 | top_thunk = SCM_BOOL_F; | |
334 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
335 | if (vcell == SCM_BOOL_F) | |
336 | goto errout; | |
337 | else | |
338 | var = vcell; | |
339 | } | |
cf7c17e9 | 340 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
341 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
342 | { | |
343 | var = SCM_CAR (var); | |
344 | errout: | |
f5bf2977 | 345 | /* scm_everr (vloc, genv,...) */ |
26d5b9b4 | 346 | if (check) |
f25f761d GH |
347 | { |
348 | if (SCM_NULLP (env)) | |
70d63753 | 349 | scm_error (scm_unbound_variable_key, NULL, "Unbound variable: ~S", |
f25f761d GH |
350 | scm_cons (var, SCM_EOL), SCM_BOOL_F); |
351 | else | |
70d63753 | 352 | scm_misc_error (NULL, "Damaged environment: ~S", |
f25f761d GH |
353 | scm_cons (var, SCM_EOL)); |
354 | } | |
26d5b9b4 MD |
355 | else |
356 | return SCM_CDRLOC (&undef_cell); | |
0f2d19dd JB |
357 | } |
358 | #endif | |
f8769b1d MV |
359 | #ifdef USE_THREADS |
360 | if (SCM_CAR (vloc) != var2) | |
361 | { | |
362 | /* Some other thread has changed the very cell we are working | |
363 | on. In effect, it must have done our job or messed it up | |
364 | completely. */ | |
365 | race: | |
366 | var = SCM_CAR (vloc); | |
9374451b | 367 | if (SCM_ITAG3 (var) == 1) |
f8769b1d MV |
368 | return SCM_GLOC_VAL_LOC (var); |
369 | #ifdef MEMOIZE_LOCALS | |
f1267706 | 370 | if ((SCM_UNPACK (var) & 127) == (127 & SCM_UNPACK (SCM_ILOC00))) |
f8769b1d MV |
371 | return scm_ilookup (var, genv); |
372 | #endif | |
373 | /* We can't cope with anything else than glocs and ilocs. When | |
374 | a special form has been memoized (i.e. `let' into `#@let') we | |
375 | return NULL and expect the calling function to do the right | |
376 | thing. For the evaluator, this means going back and redoing | |
377 | the dispatch on the car of the form. */ | |
378 | return NULL; | |
379 | } | |
380 | #endif /* USE_THREADS */ | |
381 | ||
a23afe53 | 382 | SCM_SETCAR (vloc, var + 1); |
0f2d19dd | 383 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 384 | * but syntax or something.... */ |
a23afe53 | 385 | return SCM_CDRLOC (var); |
0f2d19dd JB |
386 | } |
387 | ||
f8769b1d MV |
388 | #ifdef USE_THREADS |
389 | SCM * | |
6e8d25a6 | 390 | scm_lookupcar (SCM vloc, SCM genv, int check) |
f8769b1d | 391 | { |
26d5b9b4 | 392 | SCM *loc = scm_lookupcar1 (vloc, genv, check); |
f8769b1d MV |
393 | if (loc == NULL) |
394 | abort (); | |
395 | return loc; | |
396 | } | |
f8769b1d MV |
397 | #endif |
398 | ||
0f2d19dd | 399 | #define unmemocar scm_unmemocar |
1cc91f1b | 400 | |
0f2d19dd | 401 | SCM |
6e8d25a6 | 402 | scm_unmemocar (SCM form, SCM env) |
0f2d19dd | 403 | { |
6dbd0af5 | 404 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 405 | register int ir; |
6dbd0af5 | 406 | #endif |
0f2d19dd JB |
407 | SCM c; |
408 | ||
409 | if (SCM_IMP (form)) | |
410 | return form; | |
411 | c = SCM_CAR (form); | |
f1267706 | 412 | if (1 == (SCM_UNPACK (c) & 7)) |
a23afe53 | 413 | SCM_SETCAR (form, SCM_CAR (c - 1)); |
0f2d19dd | 414 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 415 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
416 | else if (SCM_ILOCP (c)) |
417 | { | |
418 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
419 | env = SCM_CDR (env); | |
420 | env = SCM_CAR (SCM_CAR (env)); | |
421 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
422 | env = SCM_CDR (env); | |
a23afe53 | 423 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 424 | } |
6dbd0af5 | 425 | #endif |
0f2d19dd JB |
426 | #endif |
427 | return form; | |
428 | } | |
429 | ||
1cc91f1b | 430 | |
0f2d19dd | 431 | SCM |
6e8d25a6 | 432 | scm_eval_car (SCM pair, SCM env) |
0f2d19dd | 433 | { |
6cb702da | 434 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
435 | } |
436 | ||
437 | \f | |
438 | /* | |
439 | * The following rewrite expressions and | |
440 | * some memoized forms have different syntax | |
441 | */ | |
442 | ||
3eeba8d4 JB |
443 | const char scm_s_expression[] = "missing or extra expression"; |
444 | const char scm_s_test[] = "bad test"; | |
445 | const char scm_s_body[] = "bad body"; | |
446 | const char scm_s_bindings[] = "bad bindings"; | |
447 | const char scm_s_variable[] = "bad variable"; | |
448 | const char scm_s_clauses[] = "bad or missing clauses"; | |
449 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 450 | |
81123e6d MD |
451 | SCM scm_sym_dot, scm_sym_arrow, scm_sym_else; |
452 | SCM scm_sym_unquote, scm_sym_uq_splicing, scm_sym_apply; | |
453 | ||
454 | SCM scm_f_apply; | |
b8229a3b | 455 | |
6dbd0af5 | 456 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
457 | SCM scm_sym_enter_frame, scm_sym_apply_frame, scm_sym_exit_frame; |
458 | SCM scm_sym_trace; | |
6dbd0af5 | 459 | #endif |
0f2d19dd JB |
460 | |
461 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
462 | ||
463 | ||
1cc91f1b | 464 | |
7866a09b | 465 | static void bodycheck (SCM xorig, SCM *bodyloc, const char *what); |
1cc91f1b | 466 | |
0f2d19dd | 467 | static void |
6e8d25a6 | 468 | bodycheck (SCM xorig, SCM *bodyloc, const char *what) |
0f2d19dd | 469 | { |
6cb702da | 470 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, scm_s_expression); |
0f2d19dd JB |
471 | } |
472 | ||
26d5b9b4 MD |
473 | /* Check that the body denoted by XORIG is valid and rewrite it into |
474 | its internal form. The internal form of a body is just the body | |
475 | itself, but prefixed with an ISYM that denotes to what kind of | |
476 | outer construct this body belongs. A lambda body starts with | |
477 | SCM_IM_LAMBDA, for example, a body of a let starts with SCM_IM_LET, | |
478 | etc. The one exception is a body that belongs to a letrec that has | |
479 | been formed by rewriting internal defines: it starts with | |
480 | SCM_IM_DEFINE. */ | |
481 | ||
482 | /* XXX - Besides controlling the rewriting of internal defines, the | |
483 | additional ISYM could be used for improved error messages. | |
484 | This is not done yet. */ | |
485 | ||
486 | static SCM | |
6e8d25a6 | 487 | scm_m_body (SCM op, SCM xorig, const char *what) |
26d5b9b4 MD |
488 | { |
489 | ASRTSYNTAX (scm_ilength (xorig) >= 1, scm_s_expression); | |
490 | ||
491 | /* Don't add another ISYM if one is present already. */ | |
492 | if (SCM_ISYMP (SCM_CAR (xorig))) | |
493 | return xorig; | |
494 | ||
495 | /* Retain possible doc string. */ | |
496 | if (SCM_IMP (SCM_CAR(xorig)) || SCM_NCONSP (SCM_CAR (xorig))) | |
497 | { | |
498 | if (SCM_NNULLP (SCM_CDR(xorig))) | |
499 | return scm_cons (SCM_CAR (xorig), | |
500 | scm_m_body (op, SCM_CDR(xorig), what)); | |
501 | return xorig; | |
502 | } | |
503 | ||
504 | return scm_cons2 (op, SCM_CAR (xorig), SCM_CDR(xorig)); | |
505 | } | |
506 | ||
b8229a3b | 507 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
2f0d1375 | 508 | SCM_GLOBAL_SYMBOL(scm_sym_quote, s_quote); |
1cc91f1b | 509 | |
0f2d19dd | 510 | SCM |
6e8d25a6 | 511 | scm_m_quote (SCM xorig, SCM env) |
0f2d19dd | 512 | { |
26d5b9b4 MD |
513 | SCM x = scm_copy_tree (SCM_CDR (xorig)); |
514 | ||
6cb702da | 515 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 516 | xorig, scm_s_expression, s_quote); |
3a3111a8 | 517 | return scm_cons (SCM_IM_QUOTE, x); |
0f2d19dd JB |
518 | } |
519 | ||
520 | ||
1cc91f1b | 521 | |
b8229a3b | 522 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
2f0d1375 | 523 | SCM_GLOBAL_SYMBOL(scm_sym_begin, s_begin); |
b8229a3b | 524 | |
0f2d19dd | 525 | SCM |
6e8d25a6 | 526 | scm_m_begin (SCM xorig, SCM env) |
0f2d19dd | 527 | { |
6cb702da | 528 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 529 | xorig, scm_s_expression, s_begin); |
3a3111a8 | 530 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
0f2d19dd JB |
531 | } |
532 | ||
b8229a3b | 533 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
2f0d1375 | 534 | SCM_GLOBAL_SYMBOL(scm_sym_if, s_if); |
1cc91f1b | 535 | |
0f2d19dd | 536 | SCM |
6e8d25a6 | 537 | scm_m_if (SCM xorig, SCM env) |
0f2d19dd JB |
538 | { |
539 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 540 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
3a3111a8 | 541 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
0f2d19dd JB |
542 | } |
543 | ||
544 | ||
89efbff4 MD |
545 | /* Will go into the RnRS module when Guile is factorized. |
546 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
547 | const char scm_s_set_x[] = "set!"; | |
548 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 549 | |
0f2d19dd | 550 | SCM |
6e8d25a6 | 551 | scm_m_set_x (SCM xorig, SCM env) |
0f2d19dd | 552 | { |
6dbd0af5 | 553 | SCM x = SCM_CDR (xorig); |
89efbff4 | 554 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
cabe682c | 555 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 | 556 | xorig, scm_s_variable, scm_s_set_x); |
3a3111a8 | 557 | return scm_cons (SCM_IM_SET_X, x); |
0f2d19dd JB |
558 | } |
559 | ||
560 | ||
561 | #if 0 | |
1cc91f1b | 562 | |
0f2d19dd | 563 | SCM |
6e8d25a6 | 564 | scm_m_vref (SCM xorig, SCM env) |
0f2d19dd JB |
565 | { |
566 | SCM x = SCM_CDR (xorig); | |
6cb702da | 567 | SCM_ASSYNT (1 == scm_ilength (x), xorig, scm_s_expression, s_vref); |
0f2d19dd JB |
568 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) |
569 | { | |
f5bf2977 | 570 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 | 571 | scm_misc_error (NULL, |
70d63753 | 572 | "Bad variable: ~S", |
523f5266 | 573 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); |
0f2d19dd | 574 | } |
6cb702da MD |
575 | SCM_ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), |
576 | xorig, scm_s_variable, s_vref); | |
0f2d19dd JB |
577 | return scm_cons (IM_VREF, x); |
578 | } | |
579 | ||
580 | ||
1cc91f1b | 581 | |
0f2d19dd | 582 | SCM |
6e8d25a6 | 583 | scm_m_vset (SCM xorig, SCM env) |
0f2d19dd JB |
584 | { |
585 | SCM x = SCM_CDR (xorig); | |
6cb702da MD |
586 | SCM_ASSYNT (3 == scm_ilength (x), xorig, scm_s_expression, s_vset); |
587 | SCM_ASSYNT ((DEFSCM_VARIABLEP (SCM_CAR (x)) | |
588 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
589 | xorig, scm_s_variable, s_vset); | |
0f2d19dd JB |
590 | return scm_cons (IM_VSET, x); |
591 | } | |
592 | #endif | |
593 | ||
594 | ||
b8229a3b | 595 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
2f0d1375 | 596 | SCM_GLOBAL_SYMBOL(scm_sym_and, s_and); |
1cc91f1b | 597 | |
0f2d19dd | 598 | SCM |
6e8d25a6 | 599 | scm_m_and (SCM xorig, SCM env) |
0f2d19dd JB |
600 | { |
601 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 602 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd | 603 | if (len >= 1) |
3a3111a8 | 604 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); |
0f2d19dd JB |
605 | else |
606 | return SCM_BOOL_T; | |
607 | } | |
608 | ||
b8229a3b | 609 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
2f0d1375 | 610 | SCM_GLOBAL_SYMBOL(scm_sym_or,s_or); |
1cc91f1b | 611 | |
0f2d19dd | 612 | SCM |
6e8d25a6 | 613 | scm_m_or (SCM xorig, SCM env) |
0f2d19dd JB |
614 | { |
615 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 616 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd | 617 | if (len >= 1) |
3a3111a8 | 618 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); |
0f2d19dd JB |
619 | else |
620 | return SCM_BOOL_F; | |
621 | } | |
622 | ||
623 | ||
b8229a3b | 624 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
2f0d1375 | 625 | SCM_GLOBAL_SYMBOL(scm_sym_case, s_case); |
1cc91f1b | 626 | |
0f2d19dd | 627 | SCM |
6e8d25a6 | 628 | scm_m_case (SCM xorig, SCM env) |
0f2d19dd | 629 | { |
26d5b9b4 | 630 | SCM proc, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
b8229a3b | 631 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
632 | while (SCM_NIMP (x = SCM_CDR (x))) |
633 | { | |
634 | proc = SCM_CAR (x); | |
b8229a3b | 635 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da | 636 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
2f0d1375 | 637 | || scm_sym_else == SCM_CAR (proc), |
b8229a3b | 638 | xorig, scm_s_clauses, s_case); |
0f2d19dd | 639 | } |
3a3111a8 | 640 | return scm_cons (SCM_IM_CASE, cdrx); |
0f2d19dd JB |
641 | } |
642 | ||
643 | ||
b8229a3b | 644 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
2f0d1375 | 645 | SCM_GLOBAL_SYMBOL(scm_sym_cond, s_cond); |
b8229a3b | 646 | |
1cc91f1b | 647 | |
0f2d19dd | 648 | SCM |
6e8d25a6 | 649 | scm_m_cond (SCM xorig, SCM env) |
0f2d19dd | 650 | { |
26d5b9b4 | 651 | SCM arg1, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx; |
0f2d19dd | 652 | int len = scm_ilength (x); |
b8229a3b | 653 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
654 | while (SCM_NIMP (x)) |
655 | { | |
656 | arg1 = SCM_CAR (x); | |
657 | len = scm_ilength (arg1); | |
b8229a3b | 658 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
2f0d1375 | 659 | if (scm_sym_else == SCM_CAR (arg1)) |
0f2d19dd | 660 | { |
6cb702da | 661 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 662 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 663 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd | 664 | } |
2f0d1375 | 665 | if (len >= 2 && scm_sym_arrow == SCM_CAR (SCM_CDR (arg1))) |
6cb702da | 666 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 667 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
668 | x = SCM_CDR (x); |
669 | } | |
3a3111a8 | 670 | return scm_cons (SCM_IM_COND, cdrx); |
0f2d19dd JB |
671 | } |
672 | ||
b8229a3b | 673 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
2f0d1375 | 674 | SCM_GLOBAL_SYMBOL(scm_sym_lambda, s_lambda); |
1cc91f1b | 675 | |
0f2d19dd | 676 | SCM |
6e8d25a6 | 677 | scm_m_lambda (SCM xorig, SCM env) |
0f2d19dd JB |
678 | { |
679 | SCM proc, x = SCM_CDR (xorig); | |
26d5b9b4 | 680 | if (scm_ilength (x) < 2) |
0f2d19dd JB |
681 | goto badforms; |
682 | proc = SCM_CAR (x); | |
33b97402 MD |
683 | if (SCM_NULLP (proc)) |
684 | goto memlambda; | |
26d5b9b4 MD |
685 | if (SCM_IM_LET == proc) /* named let */ |
686 | goto memlambda; | |
33b97402 MD |
687 | if (SCM_IMP (proc)) |
688 | goto badforms; | |
689 | if (SCM_SYMBOLP (proc)) | |
690 | goto memlambda; | |
691 | if (SCM_NCONSP (proc)) | |
692 | goto badforms; | |
693 | while (SCM_NIMP (proc)) | |
0f2d19dd | 694 | { |
33b97402 MD |
695 | if (SCM_NCONSP (proc)) |
696 | { | |
0f2d19dd | 697 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
698 | goto badforms; |
699 | else | |
700 | goto memlambda; | |
701 | } | |
0c95b57d | 702 | if (!SCM_SYMBOLP (SCM_CAR (proc))) |
0f2d19dd JB |
703 | goto badforms; |
704 | proc = SCM_CDR (proc); | |
705 | } | |
ff467021 | 706 | if (SCM_NNULLP (proc)) |
26d5b9b4 MD |
707 | { |
708 | badforms: | |
709 | scm_wta (xorig, scm_s_formals, s_lambda); | |
710 | } | |
711 | ||
712 | memlambda: | |
3a3111a8 MD |
713 | return scm_cons2 (SCM_IM_LAMBDA, SCM_CAR (x), |
714 | scm_m_body (SCM_IM_LAMBDA, SCM_CDR (x), s_lambda)); | |
0f2d19dd JB |
715 | } |
716 | ||
b8229a3b | 717 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
2f0d1375 | 718 | SCM_GLOBAL_SYMBOL(scm_sym_letstar,s_letstar); |
0f2d19dd | 719 | |
1cc91f1b | 720 | |
0f2d19dd | 721 | SCM |
6e8d25a6 | 722 | scm_m_letstar (SCM xorig, SCM env) |
0f2d19dd JB |
723 | { |
724 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
725 | int len = scm_ilength (x); | |
b8229a3b | 726 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 727 | proc = SCM_CAR (x); |
b8229a3b | 728 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
ff467021 | 729 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
730 | { |
731 | arg1 = SCM_CAR (proc); | |
b8229a3b | 732 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
0c95b57d | 733 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, s_letstar); |
0f2d19dd | 734 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 735 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
736 | proc = SCM_CDR (proc); |
737 | } | |
738 | x = scm_cons (vars, SCM_CDR (x)); | |
26d5b9b4 | 739 | |
3a3111a8 MD |
740 | return scm_cons2 (SCM_IM_LETSTAR, SCM_CAR (x), |
741 | scm_m_body (SCM_IM_LETSTAR, SCM_CDR (x), s_letstar)); | |
0f2d19dd JB |
742 | } |
743 | ||
744 | /* DO gets the most radically altered syntax | |
745 | (do ((<var1> <init1> <step1>) | |
746 | (<var2> <init2>) | |
747 | ... ) | |
748 | (<test> <return>) | |
749 | <body>) | |
750 | ;; becomes | |
751 | (do_mem (varn ... var2 var1) | |
752 | (<init1> <init2> ... <initn>) | |
753 | (<test> <return>) | |
754 | (<body>) | |
755 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
756 | */ | |
757 | ||
b8229a3b | 758 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
2f0d1375 | 759 | SCM_GLOBAL_SYMBOL(scm_sym_do, s_do); |
1cc91f1b | 760 | |
0f2d19dd | 761 | SCM |
6e8d25a6 | 762 | scm_m_do (SCM xorig, SCM env) |
0f2d19dd JB |
763 | { |
764 | SCM x = SCM_CDR (xorig), arg1, proc; | |
765 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
766 | SCM *initloc = &inits, *steploc = &steps; | |
767 | int len = scm_ilength (x); | |
6cb702da | 768 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 769 | proc = SCM_CAR (x); |
6cb702da | 770 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
ff467021 | 771 | while (SCM_NIMP(proc)) |
0f2d19dd JB |
772 | { |
773 | arg1 = SCM_CAR (proc); | |
774 | len = scm_ilength (arg1); | |
6cb702da | 775 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
0c95b57d | 776 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, "do"); |
0f2d19dd JB |
777 | /* vars reversed here, inits and steps reversed at evaluation */ |
778 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
779 | arg1 = SCM_CDR (arg1); | |
780 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 781 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
782 | arg1 = SCM_CDR (arg1); |
783 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 784 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
785 | proc = SCM_CDR (proc); |
786 | } | |
787 | x = SCM_CDR (x); | |
6cb702da | 788 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
789 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
790 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 791 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
3a3111a8 | 792 | return scm_cons (SCM_IM_DO, x); |
0f2d19dd JB |
793 | } |
794 | ||
6dbd0af5 MD |
795 | /* evalcar is small version of inline EVALCAR when we don't care about |
796 | * speed | |
797 | */ | |
798 | #define evalcar scm_eval_car | |
0f2d19dd | 799 | |
1cc91f1b | 800 | |
1bbd0b84 | 801 | static SCM iqq (SCM form, SCM env, int depth); |
1cc91f1b | 802 | |
b8229a3b | 803 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
2f0d1375 | 804 | SCM_GLOBAL_SYMBOL(scm_sym_quasiquote, s_quasiquote); |
b8229a3b MS |
805 | |
806 | SCM | |
6e8d25a6 | 807 | scm_m_quasiquote (SCM xorig, SCM env) |
b8229a3b MS |
808 | { |
809 | SCM x = SCM_CDR (xorig); | |
810 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
811 | return iqq (SCM_CAR (x), env, 1); | |
812 | } | |
813 | ||
814 | ||
0f2d19dd | 815 | static SCM |
1bbd0b84 | 816 | iqq (SCM form,SCM env,int depth) |
0f2d19dd JB |
817 | { |
818 | SCM tmp; | |
819 | int edepth = depth; | |
ff467021 JB |
820 | if (SCM_IMP(form)) |
821 | return form; | |
0f2d19dd JB |
822 | if (SCM_VECTORP (form)) |
823 | { | |
824 | long i = SCM_LENGTH (form); | |
825 | SCM *data = SCM_VELTS (form); | |
826 | tmp = SCM_EOL; | |
827 | for (; --i >= 0;) | |
828 | tmp = scm_cons (data[i], tmp); | |
829 | return scm_vector (iqq (tmp, env, depth)); | |
830 | } | |
ff467021 JB |
831 | if (SCM_NCONSP(form)) |
832 | return form; | |
0f2d19dd | 833 | tmp = SCM_CAR (form); |
2f0d1375 | 834 | if (scm_sym_quasiquote == tmp) |
0f2d19dd JB |
835 | { |
836 | depth++; | |
837 | goto label; | |
838 | } | |
2f0d1375 | 839 | if (scm_sym_unquote == tmp) |
0f2d19dd JB |
840 | { |
841 | --depth; | |
842 | label: | |
843 | form = SCM_CDR (form); | |
0c95b57d GB |
844 | SCM_ASSERT (SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
845 | form, SCM_ARG1, s_quasiquote); | |
0f2d19dd JB |
846 | if (0 == depth) |
847 | return evalcar (form, env); | |
848 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
849 | } | |
2f0d1375 | 850 | if (SCM_NIMP (tmp) && (scm_sym_uq_splicing == SCM_CAR (tmp))) |
0f2d19dd JB |
851 | { |
852 | tmp = SCM_CDR (tmp); | |
853 | if (0 == --edepth) | |
854 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
855 | } | |
856 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
857 | } | |
858 | ||
859 | /* Here are acros which return values rather than code. */ | |
860 | ||
a570e93a MD |
861 | SCM_SYNTAX (s_delay, "delay", scm_makmmacro, scm_m_delay); |
862 | SCM_GLOBAL_SYMBOL (scm_sym_delay, s_delay); | |
1cc91f1b | 863 | |
0f2d19dd | 864 | SCM |
6e8d25a6 | 865 | scm_m_delay (SCM xorig, SCM env) |
0f2d19dd | 866 | { |
6cb702da | 867 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
a570e93a | 868 | return scm_cons2 (SCM_IM_DELAY, SCM_EOL, SCM_CDR (xorig)); |
0f2d19dd JB |
869 | } |
870 | ||
1cc91f1b | 871 | |
b8229a3b | 872 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
2f0d1375 | 873 | SCM_GLOBAL_SYMBOL(scm_sym_define, s_define); |
1cc91f1b | 874 | |
0f2d19dd | 875 | SCM |
6e8d25a6 | 876 | scm_m_define (SCM x, SCM env) |
0f2d19dd JB |
877 | { |
878 | SCM proc, arg1 = x; | |
879 | x = SCM_CDR (x); | |
6cb702da | 880 | /* SCM_ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ |
b8229a3b | 881 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
882 | proc = SCM_CAR (x); |
883 | x = SCM_CDR (x); | |
0c95b57d | 884 | while (SCM_CONSP (proc)) |
0f2d19dd | 885 | { /* nested define syntax */ |
2f0d1375 | 886 | x = scm_cons (scm_cons2 (scm_sym_lambda, SCM_CDR (proc), x), SCM_EOL); |
0f2d19dd JB |
887 | proc = SCM_CAR (proc); |
888 | } | |
0c95b57d | 889 | SCM_ASSYNT (SCM_SYMBOLP (proc), |
b8229a3b MS |
890 | arg1, scm_s_variable, s_define); |
891 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
892 | if (SCM_TOP_LEVEL (env)) |
893 | { | |
894 | x = evalcar (x, env); | |
6dbd0af5 | 895 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
896 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
897 | { | |
898 | arg1 = x; | |
899 | proc: | |
900 | if (SCM_CLOSUREP (arg1) | |
901 | /* Only the first definition determines the name. */ | |
2f0d1375 MD |
902 | && scm_procedure_property (arg1, scm_sym_name) == SCM_BOOL_F) |
903 | scm_set_procedure_property_x (arg1, scm_sym_name, proc); | |
80ea260c MD |
904 | else if (SCM_TYP16 (arg1) == scm_tc16_macro |
905 | && SCM_CDR (arg1) != arg1) | |
906 | { | |
907 | arg1 = SCM_CDR (arg1); | |
908 | goto proc; | |
909 | } | |
910 | } | |
6dbd0af5 | 911 | #endif |
6cb702da | 912 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
0f2d19dd | 913 | #if 0 |
cf7c17e9 | 914 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
915 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) |
916 | && (SCM_CDR (arg1) != x)) | |
917 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
918 | else | |
919 | #endif | |
920 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
921 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 922 | #endif |
a23afe53 | 923 | SCM_SETCDR (arg1, x); |
0f2d19dd | 924 | #ifdef SICP |
2f0d1375 | 925 | return scm_cons2 (scm_sym_quote, SCM_CAR (arg1), SCM_EOL); |
0f2d19dd JB |
926 | #else |
927 | return SCM_UNSPECIFIED; | |
928 | #endif | |
929 | } | |
930 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
931 | } | |
6dbd0af5 | 932 | |
0f2d19dd JB |
933 | /* end of acros */ |
934 | ||
26d5b9b4 | 935 | static SCM |
6e8d25a6 | 936 | scm_m_letrec1 (SCM op, SCM imm, SCM xorig, SCM env) |
0f2d19dd JB |
937 | { |
938 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
939 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
940 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
941 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
942 | ||
0f2d19dd | 943 | proc = SCM_CAR (x); |
6cb702da | 944 | ASRTSYNTAX (scm_ilength (proc) >= 1, scm_s_bindings); |
0f2d19dd JB |
945 | do |
946 | { | |
947 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
948 | arg1 = SCM_CAR (proc); | |
6cb702da | 949 | ASRTSYNTAX (2 == scm_ilength (arg1), scm_s_bindings); |
0c95b57d | 950 | ASRTSYNTAX (SCM_SYMBOLP (SCM_CAR (arg1)), |
26d5b9b4 | 951 | scm_s_variable); |
0f2d19dd JB |
952 | vars = scm_cons (SCM_CAR (arg1), vars); |
953 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 954 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd | 955 | } |
ff467021 | 956 | while (SCM_NIMP (proc = SCM_CDR (proc))); |
26d5b9b4 | 957 | |
3a3111a8 MD |
958 | return scm_cons2 (op, vars, |
959 | scm_cons (inits, scm_m_body (imm, SCM_CDR (x), what))); | |
0f2d19dd JB |
960 | } |
961 | ||
26d5b9b4 | 962 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
2f0d1375 | 963 | SCM_GLOBAL_SYMBOL(scm_sym_letrec, s_letrec); |
26d5b9b4 MD |
964 | |
965 | SCM | |
6e8d25a6 | 966 | scm_m_letrec (SCM xorig, SCM env) |
26d5b9b4 MD |
967 | { |
968 | SCM x = SCM_CDR (xorig); | |
969 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_letrec); | |
970 | ||
971 | if (SCM_NULLP (SCM_CAR (x))) /* null binding, let* faster */ | |
3a3111a8 MD |
972 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), SCM_EOL, |
973 | scm_m_body (SCM_IM_LETREC, | |
974 | SCM_CDR (x), | |
975 | s_letrec)), | |
26d5b9b4 MD |
976 | env); |
977 | else | |
978 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LETREC, xorig, env); | |
979 | } | |
1cc91f1b | 980 | |
b8229a3b | 981 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
2f0d1375 | 982 | SCM_GLOBAL_SYMBOL(scm_sym_let, s_let); |
b8229a3b | 983 | |
0f2d19dd | 984 | SCM |
6e8d25a6 | 985 | scm_m_let (SCM xorig, SCM env) |
0f2d19dd JB |
986 | { |
987 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
988 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
989 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
990 | ||
b8229a3b | 991 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
992 | proc = SCM_CAR (x); |
993 | if (SCM_NULLP (proc) | |
0c95b57d | 994 | || (SCM_CONSP (proc) |
26d5b9b4 MD |
995 | && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) |
996 | { | |
997 | /* null or single binding, let* is faster */ | |
3a3111a8 MD |
998 | return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), proc, |
999 | scm_m_body (SCM_IM_LET, | |
1000 | SCM_CDR (x), | |
1001 | s_let)), | |
26d5b9b4 MD |
1002 | env); |
1003 | } | |
1004 | ||
b8229a3b | 1005 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
26d5b9b4 MD |
1006 | if (SCM_CONSP (proc)) |
1007 | { | |
1008 | /* plain let, proc is <bindings> */ | |
1009 | return scm_m_letrec1 (SCM_IM_LET, SCM_IM_LET, xorig, env); | |
1010 | } | |
1011 | ||
0f2d19dd | 1012 | if (!SCM_SYMBOLP (proc)) |
b8229a3b | 1013 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
1014 | name = proc; /* named let, build equiv letrec */ |
1015 | x = SCM_CDR (x); | |
b8229a3b | 1016 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
26d5b9b4 | 1017 | proc = SCM_CAR (x); /* bindings list */ |
b8229a3b | 1018 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
ff467021 | 1019 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
1020 | { /* vars and inits both in order */ |
1021 | arg1 = SCM_CAR (proc); | |
b8229a3b | 1022 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
0c95b57d | 1023 | SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 1024 | xorig, scm_s_variable, s_let); |
0f2d19dd | 1025 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 1026 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 1027 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 1028 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
1029 | proc = SCM_CDR (proc); |
1030 | } | |
26d5b9b4 | 1031 | |
2f0d1375 | 1032 | proc = scm_cons2 (scm_sym_lambda, vars, |
26d5b9b4 | 1033 | scm_m_body (SCM_IM_LET, SCM_CDR (x), "let")); |
2f0d1375 | 1034 | proc = scm_cons2 (scm_sym_let, scm_cons (scm_cons2 (name, proc, SCM_EOL), |
26d5b9b4 MD |
1035 | SCM_EOL), |
1036 | scm_acons (name, inits, SCM_EOL)); | |
1037 | return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LET, proc, env); | |
0f2d19dd JB |
1038 | } |
1039 | ||
1040 | ||
81123e6d MD |
1041 | SCM_SYNTAX (s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
1042 | SCM_GLOBAL_SYMBOL (scm_sym_atapply, s_atapply); | |
1043 | SCM_GLOBAL_SYMBOL (scm_sym_apply, s_atapply + 1); | |
1cc91f1b | 1044 | |
0f2d19dd | 1045 | SCM |
6e8d25a6 | 1046 | scm_m_apply (SCM xorig, SCM env) |
0f2d19dd | 1047 | { |
6cb702da | 1048 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 1049 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
1050 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1051 | } | |
1052 | ||
b8229a3b MS |
1053 | |
1054 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
2f0d1375 | 1055 | SCM_GLOBAL_SYMBOL(scm_sym_atcall_cc,s_atcall_cc); |
0f2d19dd | 1056 | |
1cc91f1b | 1057 | |
0f2d19dd | 1058 | SCM |
6e8d25a6 | 1059 | scm_m_cont (SCM xorig, SCM env) |
0f2d19dd | 1060 | { |
6cb702da | 1061 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1062 | xorig, scm_s_expression, s_atcall_cc); |
3a3111a8 | 1063 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
0f2d19dd JB |
1064 | } |
1065 | ||
73b64342 MD |
1066 | /* Multi-language support */ |
1067 | ||
1068 | SCM scm_nil; | |
1069 | SCM scm_t; | |
1070 | ||
1071 | SCM_SYNTAX (s_nil_cond, "nil-cond", scm_makmmacro, scm_m_nil_cond); | |
1072 | ||
1073 | SCM | |
1074 | scm_m_nil_cond (SCM xorig, SCM env) | |
1075 | { | |
1076 | int len = scm_ilength (SCM_CDR (xorig)); | |
1077 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1078 | scm_s_expression, "nil-cond"); | |
1079 | return scm_cons (SCM_IM_NIL_COND, SCM_CDR (xorig)); | |
1080 | } | |
1081 | ||
1082 | SCM_SYNTAX (s_nil_ify, "nil-ify", scm_makmmacro, scm_m_nil_ify); | |
1083 | ||
1084 | SCM | |
1085 | scm_m_nil_ify (SCM xorig, SCM env) | |
1086 | { | |
1087 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1088 | xorig, scm_s_expression, "nil-ify"); | |
1089 | return scm_cons (SCM_IM_NIL_IFY, SCM_CDR (xorig)); | |
1090 | } | |
1091 | ||
1092 | SCM_SYNTAX (s_t_ify, "t-ify", scm_makmmacro, scm_m_t_ify); | |
1093 | ||
1094 | SCM | |
1095 | scm_m_t_ify (SCM xorig, SCM env) | |
1096 | { | |
1097 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1098 | xorig, scm_s_expression, "t-ify"); | |
1099 | return scm_cons (SCM_IM_T_IFY, SCM_CDR (xorig)); | |
1100 | } | |
1101 | ||
1102 | SCM_SYNTAX (s_0_cond, "0-cond", scm_makmmacro, scm_m_0_cond); | |
1103 | ||
1104 | SCM | |
1105 | scm_m_0_cond (SCM xorig, SCM env) | |
1106 | { | |
1107 | int len = scm_ilength (SCM_CDR (xorig)); | |
1108 | SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig, | |
1109 | scm_s_expression, "0-cond"); | |
1110 | return scm_cons (SCM_IM_0_COND, SCM_CDR (xorig)); | |
1111 | } | |
1112 | ||
1113 | SCM_SYNTAX (s_0_ify, "0-ify", scm_makmmacro, scm_m_0_ify); | |
1114 | ||
1115 | SCM | |
1116 | scm_m_0_ify (SCM xorig, SCM env) | |
1117 | { | |
1118 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1119 | xorig, scm_s_expression, "0-ify"); | |
1120 | return scm_cons (SCM_IM_0_IFY, SCM_CDR (xorig)); | |
1121 | } | |
1122 | ||
1123 | SCM_SYNTAX (s_1_ify, "1-ify", scm_makmmacro, scm_m_1_ify); | |
1124 | ||
1125 | SCM | |
1126 | scm_m_1_ify (SCM xorig, SCM env) | |
1127 | { | |
1128 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, | |
1129 | xorig, scm_s_expression, "1-ify"); | |
1130 | return scm_cons (SCM_IM_1_IFY, SCM_CDR (xorig)); | |
1131 | } | |
1132 | ||
1133 | SCM_SYNTAX (s_atfop, "@fop", scm_makmmacro, scm_m_atfop); | |
1134 | ||
1135 | SCM | |
1136 | scm_m_atfop (SCM xorig, SCM env) | |
1137 | { | |
1138 | SCM x = SCM_CDR (xorig), vcell; | |
1139 | SCM_ASSYNT (scm_ilength (x) >= 1, xorig, scm_s_expression, "@fop"); | |
1140 | vcell = scm_symbol_fref (SCM_CAR (x)); | |
0c95b57d | 1141 | SCM_ASSYNT (SCM_CONSP (vcell), x, |
73b64342 MD |
1142 | "Symbol's function definition is void", NULL); |
1143 | SCM_SETCAR (x, vcell + 1); | |
1144 | return x; | |
1145 | } | |
1146 | ||
1147 | SCM_SYNTAX (s_atbind, "@bind", scm_makmmacro, scm_m_atbind); | |
1148 | ||
1149 | SCM | |
1150 | scm_m_atbind (SCM xorig, SCM env) | |
1151 | { | |
1152 | SCM x = SCM_CDR (xorig); | |
1153 | SCM_ASSYNT (scm_ilength (x) > 1, xorig, scm_s_expression, "@bind"); | |
1154 | ||
1155 | if (SCM_IMP (env)) | |
1156 | env = SCM_BOOL_F; | |
1157 | else | |
1158 | { | |
1159 | while (SCM_NIMP (SCM_CDR (env))) | |
1160 | env = SCM_CDR (env); | |
1161 | env = SCM_CAR (env); | |
1162 | if (SCM_CONSP (env)) | |
1163 | env = SCM_BOOL_F; | |
1164 | } | |
1165 | ||
1166 | x = SCM_CAR (x); | |
1167 | while (SCM_NIMP (x)) | |
1168 | { | |
1169 | SCM_SETCAR (x, scm_sym2vcell (SCM_CAR (x), env, SCM_BOOL_T) + 1); | |
1170 | x = SCM_CDR (x); | |
1171 | } | |
1172 | return scm_cons (SCM_IM_BIND, SCM_CDR (xorig)); | |
1173 | } | |
73b64342 | 1174 | |
26d5b9b4 MD |
1175 | SCM |
1176 | scm_m_expand_body (SCM xorig, SCM env) | |
1177 | { | |
1178 | SCM form, x = SCM_CDR (xorig), defs = SCM_EOL; | |
1179 | char *what = SCM_ISYMCHARS (SCM_CAR (xorig)) + 2; | |
1180 | ||
1181 | while (SCM_NIMP (x)) | |
1182 | { | |
1183 | form = SCM_CAR (x); | |
1184 | if (SCM_IMP (form) || SCM_NCONSP (form)) | |
1185 | break; | |
1186 | if (SCM_IMP (SCM_CAR (form))) | |
1187 | break; | |
1188 | if (!SCM_SYMBOLP (SCM_CAR (form))) | |
1189 | break; | |
1190 | ||
3a3111a8 MD |
1191 | form = scm_macroexp (scm_cons_source (form, |
1192 | SCM_CAR (form), | |
1193 | SCM_CDR (form)), | |
1194 | env); | |
26d5b9b4 MD |
1195 | |
1196 | if (SCM_IM_DEFINE == SCM_CAR (form)) | |
1197 | { | |
1198 | defs = scm_cons (SCM_CDR (form), defs); | |
1199 | x = SCM_CDR(x); | |
1200 | } | |
1201 | else if (SCM_NIMP(defs)) | |
1202 | { | |
1203 | break; | |
1204 | } | |
1205 | else if (SCM_IM_BEGIN == SCM_CAR (form)) | |
1206 | { | |
1207 | x = scm_append (scm_cons2 (SCM_CDR (form), SCM_CDR (x), SCM_EOL)); | |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | x = scm_cons (form, SCM_CDR(x)); | |
1212 | break; | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | SCM_ASSYNT (SCM_NIMP (x), SCM_CDR (xorig), scm_s_body, what); | |
1217 | if (SCM_NIMP (defs)) | |
1218 | { | |
1219 | x = scm_cons (scm_m_letrec1 (SCM_IM_LETREC, | |
1220 | SCM_IM_DEFINE, | |
2f0d1375 | 1221 | scm_cons2 (scm_sym_define, defs, x), |
26d5b9b4 MD |
1222 | env), |
1223 | SCM_EOL); | |
1224 | } | |
1225 | ||
1226 | SCM_DEFER_INTS; | |
1227 | SCM_SETCAR (xorig, SCM_CAR (x)); | |
1228 | SCM_SETCDR (xorig, SCM_CDR (x)); | |
1229 | SCM_ALLOW_INTS; | |
1230 | ||
1231 | return xorig; | |
1232 | } | |
1233 | ||
1234 | SCM | |
1235 | scm_macroexp (SCM x, SCM env) | |
1236 | { | |
1237 | SCM res, proc; | |
1238 | ||
1239 | /* Don't bother to produce error messages here. We get them when we | |
1240 | eventually execute the code for real. */ | |
1241 | ||
1242 | macro_tail: | |
1243 | if (SCM_IMP (SCM_CAR (x)) || !SCM_SYMBOLP (SCM_CAR (x))) | |
1244 | return x; | |
1245 | ||
1246 | #ifdef USE_THREADS | |
1247 | { | |
1248 | SCM *proc_ptr = scm_lookupcar1 (x, env, 0); | |
1249 | if (proc_ptr == NULL) | |
1250 | { | |
1251 | /* We have lost the race. */ | |
1252 | goto macro_tail; | |
1253 | } | |
1254 | proc = *proc_ptr; | |
1255 | } | |
1256 | #else | |
1257 | proc = *scm_lookupcar (x, env, 0); | |
1258 | #endif | |
1259 | ||
1260 | /* Only handle memoizing macros. `Acros' and `macros' are really | |
1261 | special forms and should not be evaluated here. */ | |
1262 | ||
1263 | if (SCM_IMP (proc) | |
1264 | || scm_tc16_macro != SCM_TYP16 (proc) | |
f1267706 | 1265 | || (int) (SCM_UNPACK_CAR (proc) >> 16) != 2) |
26d5b9b4 MD |
1266 | return x; |
1267 | ||
1268 | unmemocar (x, env); | |
1269 | res = scm_apply (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1270 | ||
1271 | if (scm_ilength (res) <= 0) | |
1272 | res = scm_cons2 (SCM_IM_BEGIN, res, SCM_EOL); | |
1273 | ||
26d5b9b4 MD |
1274 | SCM_DEFER_INTS; |
1275 | SCM_SETCAR (x, SCM_CAR (res)); | |
1276 | SCM_SETCDR (x, SCM_CDR (res)); | |
1277 | SCM_ALLOW_INTS; | |
1278 | ||
1279 | goto macro_tail; | |
1280 | } | |
73b64342 | 1281 | |
6dbd0af5 MD |
1282 | /* scm_unmemocopy takes a memoized expression together with its |
1283 | * environment and rewrites it to its original form. Thus, it is the | |
1284 | * inversion of the rewrite rules above. The procedure is not | |
1285 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1286 | * code of a closure, in scm_procedure_source, in display_frame when |
1287 | * generating the source for a stackframe in a backtrace, and in | |
1288 | * display_expression. | |
6dbd0af5 MD |
1289 | */ |
1290 | ||
26d5b9b4 MD |
1291 | /* We should introduce an anti-macro interface so that it is possible |
1292 | * to plug in transformers in both directions from other compilation | |
1293 | * units. unmemocopy could then dispatch to anti-macro transformers. | |
1294 | * (Those transformers could perhaps be written in slightly more | |
1295 | * readable style... :) | |
1296 | */ | |
1297 | ||
f1267706 | 1298 | #define SCM_BIT8(x) (127 & SCM_UNPACK (x)) |
c209c88e | 1299 | |
6dbd0af5 | 1300 | static SCM |
1bbd0b84 | 1301 | unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1302 | { |
1303 | SCM ls, z; | |
1304 | #ifdef DEBUG_EXTENSIONS | |
1305 | SCM p; | |
1306 | #endif | |
1307 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1308 | return x; | |
1309 | #ifdef DEBUG_EXTENSIONS | |
1310 | p = scm_whash_lookup (scm_source_whash, x); | |
1311 | #endif | |
1312 | switch (SCM_TYP7 (x)) | |
1313 | { | |
c209c88e | 1314 | case SCM_BIT8(SCM_IM_AND): |
2f0d1375 | 1315 | ls = z = scm_cons (scm_sym_and, SCM_UNSPECIFIED); |
6dbd0af5 | 1316 | break; |
c209c88e | 1317 | case SCM_BIT8(SCM_IM_BEGIN): |
2f0d1375 | 1318 | ls = z = scm_cons (scm_sym_begin, SCM_UNSPECIFIED); |
6dbd0af5 | 1319 | break; |
c209c88e | 1320 | case SCM_BIT8(SCM_IM_CASE): |
2f0d1375 | 1321 | ls = z = scm_cons (scm_sym_case, SCM_UNSPECIFIED); |
6dbd0af5 | 1322 | break; |
c209c88e | 1323 | case SCM_BIT8(SCM_IM_COND): |
2f0d1375 | 1324 | ls = z = scm_cons (scm_sym_cond, SCM_UNSPECIFIED); |
6dbd0af5 | 1325 | break; |
c209c88e | 1326 | case SCM_BIT8(SCM_IM_DO): |
2f0d1375 | 1327 | ls = scm_cons (scm_sym_do, SCM_UNSPECIFIED); |
6dbd0af5 | 1328 | goto transform; |
c209c88e | 1329 | case SCM_BIT8(SCM_IM_IF): |
2f0d1375 | 1330 | ls = z = scm_cons (scm_sym_if, SCM_UNSPECIFIED); |
6dbd0af5 | 1331 | break; |
c209c88e | 1332 | case SCM_BIT8(SCM_IM_LET): |
2f0d1375 | 1333 | ls = scm_cons (scm_sym_let, SCM_UNSPECIFIED); |
6dbd0af5 | 1334 | goto transform; |
c209c88e | 1335 | case SCM_BIT8(SCM_IM_LETREC): |
6dbd0af5 MD |
1336 | { |
1337 | SCM f, v, e, s; | |
2f0d1375 | 1338 | ls = scm_cons (scm_sym_letrec, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1339 | transform: |
1340 | x = SCM_CDR (x); | |
26d5b9b4 | 1341 | /* binding names */ |
6dbd0af5 MD |
1342 | f = v = SCM_CAR (x); |
1343 | x = SCM_CDR (x); | |
e2806c10 | 1344 | z = EXTEND_ENV (f, SCM_EOL, env); |
26d5b9b4 | 1345 | /* inits */ |
6dbd0af5 | 1346 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
2f0d1375 | 1347 | SCM_CAR (ls) == scm_sym_letrec ? z : env)); |
6dbd0af5 | 1348 | env = z; |
26d5b9b4 | 1349 | /* increments */ |
2f0d1375 | 1350 | s = SCM_CAR (ls) == scm_sym_do |
6dbd0af5 MD |
1351 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) |
1352 | : f; | |
26d5b9b4 | 1353 | /* build transformed binding list */ |
6dbd0af5 MD |
1354 | z = SCM_EOL; |
1355 | do | |
1356 | { | |
1357 | z = scm_acons (SCM_CAR (v), | |
1358 | scm_cons (SCM_CAR (e), | |
1359 | SCM_CAR (s) == SCM_CAR (v) | |
1360 | ? SCM_EOL | |
1361 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1362 | z); | |
1363 | v = SCM_CDR (v); | |
1364 | e = SCM_CDR (e); | |
1365 | s = SCM_CDR (s); | |
1366 | } | |
ff467021 | 1367 | while (SCM_NIMP (v)); |
a23afe53 MD |
1368 | z = scm_cons (z, SCM_UNSPECIFIED); |
1369 | SCM_SETCDR (ls, z); | |
2f0d1375 | 1370 | if (SCM_CAR (ls) == scm_sym_do) |
6dbd0af5 MD |
1371 | { |
1372 | x = SCM_CDR (x); | |
26d5b9b4 | 1373 | /* test clause */ |
a23afe53 | 1374 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1375 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1376 | z = SCM_CDR (z); |
1377 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
26d5b9b4 MD |
1378 | /* body forms are now to be found in SCM_CDR (x) |
1379 | (this is how *real* code look like! :) */ | |
6dbd0af5 MD |
1380 | } |
1381 | break; | |
1382 | } | |
c209c88e | 1383 | case SCM_BIT8(SCM_IM_LETSTAR): |
6dbd0af5 MD |
1384 | { |
1385 | SCM b, y; | |
1386 | x = SCM_CDR (x); | |
1387 | b = SCM_CAR (x); | |
1388 | y = SCM_EOL; | |
1389 | if SCM_IMP (b) | |
1390 | { | |
e2806c10 | 1391 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1392 | goto letstar; |
1393 | } | |
1394 | y = z = scm_acons (SCM_CAR (b), | |
1395 | unmemocar ( | |
1396 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1397 | SCM_UNSPECIFIED); | |
e2806c10 | 1398 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1399 | b = SCM_CDR (SCM_CDR (b)); |
1400 | if (SCM_IMP (b)) | |
1401 | { | |
1402 | SCM_SETCDR (y, SCM_EOL); | |
2f0d1375 | 1403 | ls = scm_cons (scm_sym_let, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1404 | break; |
1405 | } | |
1406 | do | |
1407 | { | |
a23afe53 MD |
1408 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1409 | unmemocar ( | |
6dbd0af5 | 1410 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1411 | SCM_UNSPECIFIED)); |
1412 | z = SCM_CDR (z); | |
e2806c10 | 1413 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1414 | b = SCM_CDR (SCM_CDR (b)); |
1415 | } | |
ff467021 | 1416 | while (SCM_NIMP (b)); |
a23afe53 | 1417 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 | 1418 | letstar: |
2f0d1375 | 1419 | ls = scm_cons (scm_sym_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); |
6dbd0af5 MD |
1420 | break; |
1421 | } | |
c209c88e | 1422 | case SCM_BIT8(SCM_IM_OR): |
2f0d1375 | 1423 | ls = z = scm_cons (scm_sym_or, SCM_UNSPECIFIED); |
6dbd0af5 | 1424 | break; |
c209c88e | 1425 | case SCM_BIT8(SCM_IM_LAMBDA): |
6dbd0af5 | 1426 | x = SCM_CDR (x); |
2f0d1375 | 1427 | ls = scm_cons (scm_sym_lambda, |
6dbd0af5 | 1428 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); |
e2806c10 | 1429 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 | 1430 | break; |
c209c88e | 1431 | case SCM_BIT8(SCM_IM_QUOTE): |
2f0d1375 | 1432 | ls = z = scm_cons (scm_sym_quote, SCM_UNSPECIFIED); |
6dbd0af5 | 1433 | break; |
c209c88e | 1434 | case SCM_BIT8(SCM_IM_SET_X): |
89efbff4 | 1435 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); |
6dbd0af5 | 1436 | break; |
c209c88e | 1437 | case SCM_BIT8(SCM_IM_DEFINE): |
6dbd0af5 MD |
1438 | { |
1439 | SCM n; | |
1440 | x = SCM_CDR (x); | |
2f0d1375 | 1441 | ls = scm_cons (scm_sym_define, |
6dbd0af5 MD |
1442 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); |
1443 | if (SCM_NNULLP (env)) | |
a23afe53 | 1444 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1445 | break; |
1446 | } | |
c209c88e | 1447 | case SCM_BIT8(SCM_MAKISYM (0)): |
6dbd0af5 MD |
1448 | z = SCM_CAR (x); |
1449 | if (!SCM_ISYMP (z)) | |
1450 | goto unmemo; | |
ff467021 | 1451 | switch (SCM_ISYMNUM (z)) |
6dbd0af5 MD |
1452 | { |
1453 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2f0d1375 | 1454 | ls = z = scm_cons (scm_sym_atapply, SCM_UNSPECIFIED); |
6dbd0af5 MD |
1455 | goto loop; |
1456 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2f0d1375 | 1457 | ls = z = scm_cons (scm_sym_atcall_cc, SCM_UNSPECIFIED); |
6dbd0af5 | 1458 | goto loop; |
a570e93a MD |
1459 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
1460 | ls = z = scm_cons (scm_sym_delay, SCM_UNSPECIFIED); | |
1461 | x = SCM_CDR (x); | |
1462 | goto loop; | |
6dbd0af5 | 1463 | default: |
fa888178 | 1464 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1465 | } |
1466 | unmemo: | |
1467 | default: | |
1468 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1469 | SCM_UNSPECIFIED), | |
1470 | env); | |
1471 | } | |
1472 | loop: | |
1473 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 | 1474 | { |
26d5b9b4 MD |
1475 | if (SCM_IMP (SCM_CAR (x)) && SCM_ISYMP (SCM_CAR (x))) |
1476 | /* skip body markers */ | |
1477 | continue; | |
a23afe53 MD |
1478 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), |
1479 | SCM_UNSPECIFIED), | |
1480 | env)); | |
1481 | z = SCM_CDR (z); | |
1482 | } | |
1483 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1484 | #ifdef DEBUG_EXTENSIONS |
1485 | if (SCM_NFALSEP (p)) | |
1486 | scm_whash_insert (scm_source_whash, ls, p); | |
1487 | #endif | |
1488 | return ls; | |
1489 | } | |
1490 | ||
1cc91f1b | 1491 | |
6dbd0af5 | 1492 | SCM |
6e8d25a6 | 1493 | scm_unmemocopy (SCM x, SCM env) |
6dbd0af5 MD |
1494 | { |
1495 | if (SCM_NNULLP (env)) | |
1496 | /* Make a copy of the lowest frame to protect it from | |
1497 | modifications by SCM_IM_DEFINE */ | |
1498 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1499 | else | |
1500 | return unmemocopy (x, env); | |
1501 | } | |
1502 | ||
cf7c17e9 | 1503 | #ifndef SCM_RECKLESS |
1cc91f1b | 1504 | |
0f2d19dd | 1505 | int |
6e8d25a6 | 1506 | scm_badargsp (SCM formals, SCM args) |
0f2d19dd | 1507 | { |
ff467021 | 1508 | while (SCM_NIMP (formals)) |
0f2d19dd | 1509 | { |
ff467021 JB |
1510 | if (SCM_NCONSP (formals)) |
1511 | return 0; | |
1512 | if (SCM_IMP(args)) | |
1513 | return 1; | |
0f2d19dd JB |
1514 | formals = SCM_CDR (formals); |
1515 | args = SCM_CDR (args); | |
1516 | } | |
1517 | return SCM_NNULLP (args) ? 1 : 0; | |
1518 | } | |
1519 | #endif | |
1520 | ||
1521 | ||
1522 | \f | |
6dbd0af5 | 1523 | SCM |
6e8d25a6 | 1524 | scm_eval_args (SCM l, SCM env, SCM proc) |
6dbd0af5 | 1525 | { |
680ed4a8 | 1526 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1527 | while (SCM_NIMP (l)) |
1528 | { | |
cf7c17e9 | 1529 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1530 | if (SCM_IMP (l)) |
1531 | goto wrongnumargs; | |
1532 | else if (SCM_CONSP (l)) | |
1533 | { | |
1534 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1535 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1536 | else |
1537 | res = EVALCELLCAR (l, env); | |
1538 | } | |
1539 | else if (SCM_TYP3 (l) == 1) | |
1540 | { | |
1541 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1542 | res = SCM_CAR (l); /* struct planted in code */ | |
1543 | } | |
1544 | else | |
1545 | goto wrongnumargs; | |
1546 | #else | |
1547 | res = EVALCAR (l, env); | |
1548 | #endif | |
1549 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1550 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1551 | l = SCM_CDR (l); |
1552 | } | |
cf7c17e9 | 1553 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1554 | if (SCM_NNULLP (l)) |
1555 | { | |
1556 | wrongnumargs: | |
1557 | scm_wrong_num_args (proc); | |
1558 | } | |
1559 | #endif | |
1560 | return results; | |
6dbd0af5 | 1561 | } |
c4ac4d88 | 1562 | |
9de33deb MD |
1563 | SCM |
1564 | scm_eval_body (SCM code, SCM env) | |
1565 | { | |
1566 | SCM next; | |
1567 | again: | |
1568 | next = code; | |
1569 | while (SCM_NNULLP (next = SCM_CDR (next))) | |
1570 | { | |
1571 | if (SCM_IMP (SCM_CAR (code))) | |
1572 | { | |
1573 | if (SCM_ISYMP (SCM_CAR (code))) | |
1574 | { | |
1575 | code = scm_m_expand_body (code, env); | |
1576 | goto again; | |
1577 | } | |
1578 | } | |
1579 | else | |
1580 | SCM_XEVAL (SCM_CAR (code), env); | |
1581 | code = next; | |
1582 | } | |
1583 | return SCM_XEVALCAR (code, env); | |
1584 | } | |
1585 | ||
c4ac4d88 | 1586 | |
0f2d19dd JB |
1587 | #endif /* !DEVAL */ |
1588 | ||
6dbd0af5 MD |
1589 | |
1590 | /* SECTION: This code is specific for the debugging support. One | |
1591 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1592 | * defined. | |
1593 | */ | |
1594 | ||
1595 | #ifndef DEVAL | |
1596 | ||
1597 | #define SCM_APPLY scm_apply | |
1598 | #define PREP_APPLY(proc, args) | |
1599 | #define ENTER_APPLY | |
1600 | #define RETURN(x) return x; | |
b7ff98dd MD |
1601 | #ifdef STACK_CHECKING |
1602 | #ifndef NO_CEVAL_STACK_CHECKING | |
1603 | #define EVAL_STACK_CHECKING | |
1604 | #endif | |
6dbd0af5 MD |
1605 | #endif |
1606 | ||
1607 | #else /* !DEVAL */ | |
1608 | ||
0f2d19dd JB |
1609 | #undef SCM_CEVAL |
1610 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1611 | #undef SCM_APPLY | |
1612 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1613 | #undef PREP_APPLY |
1614 | #define PREP_APPLY(p, l) \ | |
1615 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1616 | #undef ENTER_APPLY | |
1617 | #define ENTER_APPLY \ | |
d3a6bc94 | 1618 | do { \ |
b7ff98dd | 1619 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1620 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1621 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1622 | {\ |
156dcb09 | 1623 | SCM tmp, tail = SCM_BOOL(SCM_TRACED_FRAME_P (debug)); \ |
c6a4fbce | 1624 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1625 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1626 | {\ |
c0ab1b8d | 1627 | tmp = scm_make_debugobj (&debug);\ |
2f0d1375 | 1628 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1629 | }\ |
6dbd0af5 MD |
1630 | else\ |
1631 | {\ | |
1632 | scm_make_cont (&tmp);\ | |
ca6ef71a | 1633 | if (!setjmp (SCM_JMPBUF (tmp)))\ |
2f0d1375 | 1634 | scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
6dbd0af5 MD |
1635 | }\ |
1636 | }\ | |
d3a6bc94 | 1637 | } while (0) |
0f2d19dd JB |
1638 | #undef RETURN |
1639 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1640 | #ifdef STACK_CHECKING |
1641 | #ifndef EVAL_STACK_CHECKING | |
1642 | #define EVAL_STACK_CHECKING | |
1643 | #endif | |
6dbd0af5 MD |
1644 | #endif |
1645 | ||
1646 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1647 | * *fixme*: Although efficiency is important here, this state variable | |
1648 | * should probably not be a global. It should be related to the | |
1649 | * current repl. | |
1650 | */ | |
1651 | ||
1cc91f1b | 1652 | |
1bbd0b84 | 1653 | SCM (*scm_ceval_ptr) (SCM x, SCM env); |
0f2d19dd | 1654 | |
1646d37b | 1655 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1656 | * information stack frame. It is accessed very often from the |
1657 | * debugging evaluator, so it should probably not be indirectly | |
1658 | * addressed. Better to save and restore it from the current root at | |
1659 | * any stack swaps. | |
1660 | */ | |
1661 | ||
1646d37b MD |
1662 | #ifndef USE_THREADS |
1663 | scm_debug_frame *scm_last_debug_frame; | |
1664 | #endif | |
6dbd0af5 MD |
1665 | |
1666 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1667 | * stack frames at each real stack frame. | |
1668 | */ | |
1669 | ||
1670 | int scm_debug_eframe_size; | |
1671 | ||
b7ff98dd | 1672 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1673 | |
a74145b8 MD |
1674 | int scm_eval_stack; |
1675 | ||
33b97402 | 1676 | scm_option scm_eval_opts[] = { |
a74145b8 | 1677 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1678 | }; |
1679 | ||
6dbd0af5 | 1680 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1681 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1682 | "*Flyweight representation of the stack at traps." }, | |
1683 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1684 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1685 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1686 | "Record procedure names at definition." }, | |
1687 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1688 | "Display backtrace in anti-chronological order." }, | |
274dc5fd | 1689 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, |
4e646a03 MD |
1690 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1691 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1692 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1693 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1694 | "Maximal number of stored backtrace frames." }, | |
1695 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1696 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1697 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1698 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1699 | }; |
1700 | ||
1701 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1702 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1703 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1704 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1705 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1706 | }; |
1707 | ||
a1ec6916 | 1708 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
1bbd0b84 | 1709 | (SCM setting), |
b380b885 | 1710 | "") |
1bbd0b84 | 1711 | #define FUNC_NAME s_scm_eval_options_interface |
33b97402 MD |
1712 | { |
1713 | SCM ans; | |
1714 | SCM_DEFER_INTS; | |
1715 | ans = scm_options (setting, | |
1716 | scm_eval_opts, | |
1717 | SCM_N_EVAL_OPTIONS, | |
1bbd0b84 | 1718 | FUNC_NAME); |
a74145b8 | 1719 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1720 | SCM_ALLOW_INTS; |
1721 | return ans; | |
1722 | } | |
1bbd0b84 | 1723 | #undef FUNC_NAME |
33b97402 | 1724 | |
a1ec6916 | 1725 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
1bbd0b84 | 1726 | (SCM setting), |
b380b885 | 1727 | "") |
1bbd0b84 | 1728 | #define FUNC_NAME s_scm_evaluator_traps |
33b97402 MD |
1729 | { |
1730 | SCM ans; | |
1731 | SCM_DEFER_INTS; | |
1732 | ans = scm_options (setting, | |
1733 | scm_evaluator_trap_table, | |
1734 | SCM_N_EVALUATOR_TRAPS, | |
1bbd0b84 | 1735 | FUNC_NAME); |
33b97402 | 1736 | SCM_RESET_DEBUG_MODE; |
bfc69694 | 1737 | SCM_ALLOW_INTS; |
33b97402 MD |
1738 | return ans; |
1739 | } | |
1bbd0b84 | 1740 | #undef FUNC_NAME |
33b97402 | 1741 | |
6dbd0af5 | 1742 | SCM |
6e8d25a6 | 1743 | scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc) |
0f2d19dd | 1744 | { |
680ed4a8 | 1745 | SCM *results = lloc, res; |
0f2d19dd JB |
1746 | while (SCM_NIMP (l)) |
1747 | { | |
cf7c17e9 | 1748 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1749 | if (SCM_IMP (l)) |
1750 | goto wrongnumargs; | |
1751 | else if (SCM_CONSP (l)) | |
1752 | { | |
1753 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1754 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1755 | else |
1756 | res = EVALCELLCAR (l, env); | |
1757 | } | |
1758 | else if (SCM_TYP3 (l) == 1) | |
1759 | { | |
1760 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1761 | res = SCM_CAR (l); /* struct planted in code */ | |
1762 | } | |
1763 | else | |
1764 | goto wrongnumargs; | |
1765 | #else | |
1766 | res = EVALCAR (l, env); | |
1767 | #endif | |
1768 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1769 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1770 | l = SCM_CDR (l); |
1771 | } | |
cf7c17e9 | 1772 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1773 | if (SCM_NNULLP (l)) |
1774 | { | |
1775 | wrongnumargs: | |
1776 | scm_wrong_num_args (proc); | |
1777 | } | |
1778 | #endif | |
1779 | return *results; | |
0f2d19dd JB |
1780 | } |
1781 | ||
6dbd0af5 MD |
1782 | #endif /* !DEVAL */ |
1783 | ||
1784 | ||
1785 | /* SECTION: Some local definitions for the evaluator. | |
1786 | */ | |
1787 | ||
1788 | #ifndef DEVAL | |
1789 | #ifdef SCM_FLOATS | |
1790 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1791 | #else | |
1792 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1793 | #endif | |
1794 | #endif /* DEVAL */ | |
1795 | ||
399dedcc | 1796 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1797 | |
1798 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1799 | * three heads. This code is compiled twice. | |
1800 | */ | |
1801 | ||
0f2d19dd | 1802 | #if 0 |
1cc91f1b | 1803 | |
0f2d19dd | 1804 | SCM |
1bbd0b84 | 1805 | scm_ceval (SCM x, SCM env) |
0f2d19dd JB |
1806 | {} |
1807 | #endif | |
1808 | #if 0 | |
1cc91f1b | 1809 | |
0f2d19dd | 1810 | SCM |
1bbd0b84 | 1811 | scm_deval (SCM x, SCM env) |
0f2d19dd JB |
1812 | {} |
1813 | #endif | |
1814 | ||
6dbd0af5 | 1815 | SCM |
1bbd0b84 | 1816 | SCM_CEVAL (SCM x, SCM env) |
0f2d19dd JB |
1817 | { |
1818 | union | |
1819 | { | |
1820 | SCM *lloc; | |
1821 | SCM arg1; | |
f8769b1d | 1822 | } t; |
6dbd0af5 MD |
1823 | SCM proc, arg2; |
1824 | #ifdef DEVAL | |
c0ab1b8d JB |
1825 | scm_debug_frame debug; |
1826 | scm_debug_info *debug_info_end; | |
1646d37b | 1827 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1828 | debug.status = scm_debug_eframe_size; |
04b6c081 MD |
1829 | /* |
1830 | * The debug.vect contains twice as much scm_debug_info frames as the | |
1831 | * user has specified with (debug-set! frames <n>). | |
1832 | * | |
1833 | * Even frames are eval frames, odd frames are apply frames. | |
1834 | */ | |
c0ab1b8d JB |
1835 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1836 | * sizeof (debug.vect[0])); | |
1837 | debug.info = debug.vect; | |
1838 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1839 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1840 | #endif |
b7ff98dd | 1841 | #ifdef EVAL_STACK_CHECKING |
6f13f9cb MD |
1842 | if (scm_stack_checking_enabled_p |
1843 | && SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc)) | |
6dbd0af5 | 1844 | { |
b7ff98dd | 1845 | #ifdef DEVAL |
6dbd0af5 MD |
1846 | debug.info->e.exp = x; |
1847 | debug.info->e.env = env; | |
b7ff98dd | 1848 | #endif |
6dbd0af5 MD |
1849 | scm_report_stack_overflow (); |
1850 | } | |
1851 | #endif | |
1852 | #ifdef DEVAL | |
1853 | goto start; | |
1854 | #endif | |
1855 | loopnoap: | |
1856 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1857 | loop: | |
1858 | #ifdef DEVAL | |
b7ff98dd MD |
1859 | SCM_CLEAR_ARGSREADY (debug); |
1860 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1861 | --debug.info; |
04b6c081 MD |
1862 | /* |
1863 | * In theory, this should be the only place where it is necessary to | |
1864 | * check for space in debug.vect since both eval frames and | |
1865 | * available space are even. | |
1866 | * | |
1867 | * For this to be the case, however, it is necessary that primitive | |
1868 | * special forms which jump back to `loop', `begin' or some similar | |
1869 | * label call PREP_APPLY. A convenient way to do this is to jump to | |
1870 | * `loopnoap' or `cdrxnoap'. | |
1871 | */ | |
c0ab1b8d | 1872 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1873 | { |
b7ff98dd | 1874 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1875 | debug.info -= 2; |
1876 | } | |
1877 | start: | |
1878 | debug.info->e.exp = x; | |
1879 | debug.info->e.env = env; | |
b6d75948 | 1880 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1881 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1882 | { |
156dcb09 | 1883 | SCM tail = SCM_BOOL(SCM_TAILRECP (debug)); |
b7ff98dd | 1884 | SCM_SET_TAILREC (debug); |
b7ff98dd | 1885 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1886 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1887 | else |
1888 | { | |
1889 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1890 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1891 | { |
1892 | x = SCM_THROW_VALUE (t.arg1); | |
1893 | if (SCM_IMP (x)) | |
1894 | { | |
1895 | RETURN (x); | |
1896 | } | |
1897 | else | |
1898 | /* This gives the possibility for the debugger to | |
1899 | modify the source expression before evaluation. */ | |
1900 | goto dispatch; | |
1901 | } | |
1902 | } | |
2f0d1375 | 1903 | scm_ithrow (scm_sym_enter_frame, |
6dbd0af5 MD |
1904 | scm_cons2 (t.arg1, tail, |
1905 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1906 | 0); | |
1907 | } | |
6dbd0af5 | 1908 | #endif |
e3173f93 | 1909 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1910 | dispatch: |
e3173f93 | 1911 | #endif |
9cb5124f | 1912 | SCM_TICK; |
0f2d19dd JB |
1913 | switch (SCM_TYP7 (x)) |
1914 | { | |
1915 | case scm_tcs_symbols: | |
1916 | /* Only happens when called at top level. | |
1917 | */ | |
1918 | x = scm_cons (x, SCM_UNDEFINED); | |
1919 | goto retval; | |
1920 | ||
c209c88e | 1921 | case SCM_BIT8(SCM_IM_AND): |
0f2d19dd JB |
1922 | x = SCM_CDR (x); |
1923 | t.arg1 = x; | |
1924 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1925 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1926 | { | |
1927 | RETURN (SCM_BOOL_F); | |
1928 | } | |
1929 | else | |
1930 | x = t.arg1; | |
6dbd0af5 | 1931 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1932 | goto carloop; |
1933 | ||
c209c88e | 1934 | case SCM_BIT8(SCM_IM_BEGIN): |
6dbd0af5 MD |
1935 | cdrxnoap: |
1936 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1937 | cdrxbegin: |
1938 | x = SCM_CDR (x); | |
1939 | ||
1940 | begin: | |
1941 | t.arg1 = x; | |
1942 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1943 | { | |
26d5b9b4 MD |
1944 | if (SCM_IMP (SCM_CAR (x))) |
1945 | { | |
1946 | if (SCM_ISYMP (SCM_CAR (x))) | |
1947 | { | |
1948 | x = scm_m_expand_body (x, env); | |
1949 | goto begin; | |
1950 | } | |
1951 | } | |
1952 | else | |
1953 | SCM_CEVAL (SCM_CAR (x), env); | |
0f2d19dd JB |
1954 | x = t.arg1; |
1955 | } | |
1956 | ||
1957 | carloop: /* scm_eval car of last form in list */ | |
1958 | if (SCM_NCELLP (SCM_CAR (x))) | |
1959 | { | |
1960 | x = SCM_CAR (x); | |
6cb702da | 1961 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1962 | } |
1963 | ||
1964 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1965 | { | |
1966 | retval: | |
26d5b9b4 | 1967 | RETURN (*scm_lookupcar (x, env, 1)) |
0f2d19dd JB |
1968 | } |
1969 | ||
1970 | x = SCM_CAR (x); | |
1971 | goto loop; /* tail recurse */ | |
1972 | ||
1973 | ||
c209c88e | 1974 | case SCM_BIT8(SCM_IM_CASE): |
0f2d19dd JB |
1975 | x = SCM_CDR (x); |
1976 | t.arg1 = EVALCAR (x, env); | |
1977 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1978 | { | |
1979 | proc = SCM_CAR (x); | |
2f0d1375 | 1980 | if (scm_sym_else == SCM_CAR (proc)) |
0f2d19dd JB |
1981 | { |
1982 | x = SCM_CDR (proc); | |
6dbd0af5 | 1983 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1984 | goto begin; |
1985 | } | |
1986 | proc = SCM_CAR (proc); | |
1987 | while (SCM_NIMP (proc)) | |
1988 | { | |
1989 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1990 | { | |
1991 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1992 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1993 | goto begin; |
1994 | } | |
1995 | proc = SCM_CDR (proc); | |
1996 | } | |
1997 | } | |
6dbd0af5 | 1998 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1999 | |
2000 | ||
c209c88e | 2001 | case SCM_BIT8(SCM_IM_COND): |
0f2d19dd JB |
2002 | while (SCM_NIMP (x = SCM_CDR (x))) |
2003 | { | |
2004 | proc = SCM_CAR (x); | |
2005 | t.arg1 = EVALCAR (proc, env); | |
2006 | if (SCM_NFALSEP (t.arg1)) | |
2007 | { | |
2008 | x = SCM_CDR (proc); | |
6dbd0af5 | 2009 | if SCM_NULLP (x) |
0f2d19dd | 2010 | { |
6dbd0af5 | 2011 | RETURN (t.arg1) |
0f2d19dd | 2012 | } |
2f0d1375 | 2013 | if (scm_sym_arrow != SCM_CAR (x)) |
6dbd0af5 MD |
2014 | { |
2015 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2016 | goto begin; | |
2017 | } | |
0f2d19dd JB |
2018 | proc = SCM_CDR (x); |
2019 | proc = EVALCAR (proc, env); | |
2020 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2021 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2022 | ENTER_APPLY; | |
0f2d19dd JB |
2023 | goto evap1; |
2024 | } | |
2025 | } | |
6dbd0af5 | 2026 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2027 | |
2028 | ||
c209c88e | 2029 | case SCM_BIT8(SCM_IM_DO): |
0f2d19dd JB |
2030 | x = SCM_CDR (x); |
2031 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
2032 | t.arg1 = SCM_EOL; /* values */ | |
2033 | while (SCM_NIMP (proc)) | |
2034 | { | |
2035 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2036 | proc = SCM_CDR (proc); | |
2037 | } | |
e2806c10 | 2038 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
2039 | x = SCM_CDR (SCM_CDR (x)); |
2040 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
2041 | { | |
f3d2630a | 2042 | for (proc = SCM_CADR (x); SCM_NIMP (proc); proc = SCM_CDR (proc)) |
0f2d19dd JB |
2043 | { |
2044 | t.arg1 = SCM_CAR (proc); /* body */ | |
2045 | SIDEVAL (t.arg1, env); | |
2046 | } | |
f3d2630a MD |
2047 | for (t.arg1 = SCM_EOL, proc = SCM_CDDR (x); |
2048 | SCM_NIMP (proc); | |
2049 | proc = SCM_CDR (proc)) | |
0f2d19dd | 2050 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ |
e2806c10 | 2051 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
2052 | } |
2053 | x = SCM_CDR (proc); | |
2054 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
2055 | RETURN (SCM_UNSPECIFIED); |
2056 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
2057 | goto begin; |
2058 | ||
2059 | ||
c209c88e | 2060 | case SCM_BIT8(SCM_IM_IF): |
0f2d19dd JB |
2061 | x = SCM_CDR (x); |
2062 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
2063 | x = SCM_CDR (x); | |
2064 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
2065 | { | |
2066 | RETURN (SCM_UNSPECIFIED); | |
2067 | } | |
6dbd0af5 | 2068 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2069 | goto carloop; |
2070 | ||
2071 | ||
c209c88e | 2072 | case SCM_BIT8(SCM_IM_LET): |
0f2d19dd JB |
2073 | x = SCM_CDR (x); |
2074 | proc = SCM_CAR (SCM_CDR (x)); | |
2075 | t.arg1 = SCM_EOL; | |
2076 | do | |
2077 | { | |
2078 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2079 | } | |
2080 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 2081 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 2082 | x = SCM_CDR (x); |
6dbd0af5 | 2083 | goto cdrxnoap; |
0f2d19dd JB |
2084 | |
2085 | ||
c209c88e | 2086 | case SCM_BIT8(SCM_IM_LETREC): |
0f2d19dd | 2087 | x = SCM_CDR (x); |
e2806c10 | 2088 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
2089 | x = SCM_CDR (x); |
2090 | proc = SCM_CAR (x); | |
2091 | t.arg1 = SCM_EOL; | |
2092 | do | |
2093 | { | |
2094 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
2095 | } | |
2096 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 2097 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 2098 | goto cdrxnoap; |
0f2d19dd JB |
2099 | |
2100 | ||
c209c88e | 2101 | case SCM_BIT8(SCM_IM_LETSTAR): |
0f2d19dd JB |
2102 | x = SCM_CDR (x); |
2103 | proc = SCM_CAR (x); | |
2104 | if (SCM_IMP (proc)) | |
2105 | { | |
e2806c10 | 2106 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 2107 | goto cdrxnoap; |
0f2d19dd JB |
2108 | } |
2109 | do | |
2110 | { | |
2111 | t.arg1 = SCM_CAR (proc); | |
2112 | proc = SCM_CDR (proc); | |
e2806c10 | 2113 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
2114 | } |
2115 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 2116 | goto cdrxnoap; |
0f2d19dd | 2117 | |
c209c88e | 2118 | case SCM_BIT8(SCM_IM_OR): |
0f2d19dd JB |
2119 | x = SCM_CDR (x); |
2120 | t.arg1 = x; | |
2121 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
2122 | { | |
2123 | x = EVALCAR (x, env); | |
2124 | if (SCM_NFALSEP (x)) | |
2125 | { | |
2126 | RETURN (x); | |
2127 | } | |
2128 | x = t.arg1; | |
2129 | } | |
6dbd0af5 | 2130 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
2131 | goto carloop; |
2132 | ||
2133 | ||
c209c88e | 2134 | case SCM_BIT8(SCM_IM_LAMBDA): |
0f2d19dd JB |
2135 | RETURN (scm_closure (SCM_CDR (x), env)); |
2136 | ||
2137 | ||
c209c88e | 2138 | case SCM_BIT8(SCM_IM_QUOTE): |
0f2d19dd JB |
2139 | RETURN (SCM_CAR (SCM_CDR (x))); |
2140 | ||
2141 | ||
c209c88e | 2142 | case SCM_BIT8(SCM_IM_SET_X): |
0f2d19dd JB |
2143 | x = SCM_CDR (x); |
2144 | proc = SCM_CAR (x); | |
6dbd0af5 | 2145 | switch (7 & (int) proc) |
0f2d19dd JB |
2146 | { |
2147 | case 0: | |
26d5b9b4 | 2148 | t.lloc = scm_lookupcar (x, env, 1); |
0f2d19dd JB |
2149 | break; |
2150 | case 1: | |
a23afe53 | 2151 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
2152 | break; |
2153 | #ifdef MEMOIZE_LOCALS | |
2154 | case 4: | |
2155 | t.lloc = scm_ilookup (proc, env); | |
2156 | break; | |
2157 | #endif | |
2158 | } | |
2159 | x = SCM_CDR (x); | |
2160 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
2161 | #ifdef SICP |
2162 | RETURN (*t.lloc); | |
2163 | #else | |
2164 | RETURN (SCM_UNSPECIFIED); | |
2165 | #endif | |
2166 | ||
2167 | ||
c209c88e | 2168 | case SCM_BIT8(SCM_IM_DEFINE): /* only for internal defines */ |
26d5b9b4 MD |
2169 | scm_misc_error (NULL, "Bad define placement", SCM_EOL); |
2170 | ||
0f2d19dd | 2171 | /* new syntactic forms go here. */ |
c209c88e | 2172 | case SCM_BIT8(SCM_MAKISYM (0)): |
0f2d19dd JB |
2173 | proc = SCM_CAR (x); |
2174 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
2175 | switch SCM_ISYMNUM (proc) | |
2176 | { | |
2177 | #if 0 | |
2178 | case (SCM_ISYMNUM (IM_VREF)): | |
2179 | { | |
2180 | SCM var; | |
2181 | var = SCM_CAR (SCM_CDR (x)); | |
2182 | RETURN (SCM_CDR(var)); | |
2183 | } | |
2184 | case (SCM_ISYMNUM (IM_VSET)): | |
2185 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
2186 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 2187 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
2188 | #endif |
2189 | ||
2190 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
2191 | proc = SCM_CDR (x); | |
2192 | proc = EVALCAR (proc, env); | |
2193 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
2194 | if (SCM_CLOSUREP (proc)) | |
2195 | { | |
1609038c | 2196 | SCM argl, tl; |
6dbd0af5 | 2197 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
2198 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
2199 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
2200 | #ifdef DEVAL |
2201 | debug.info->a.args = t.arg1; | |
2202 | #endif | |
cf7c17e9 | 2203 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
2204 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
2205 | goto wrongnumargs; | |
2206 | #endif | |
c79450dd | 2207 | ENTER_APPLY; |
1609038c MD |
2208 | /* Copy argument list */ |
2209 | if (SCM_IMP (t.arg1)) | |
2210 | argl = t.arg1; | |
2211 | else | |
2212 | { | |
2213 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
2214 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
2215 | && SCM_CONSP (t.arg1)) | |
2216 | { | |
2217 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
2218 | SCM_UNSPECIFIED)); | |
2219 | tl = SCM_CDR (tl); | |
2220 | } | |
2221 | SCM_SETCDR (tl, t.arg1); | |
2222 | } | |
2223 | ||
2224 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
2225 | x = SCM_CODE (proc); |
2226 | goto cdrxbegin; | |
2227 | } | |
81123e6d | 2228 | proc = scm_f_apply; |
0f2d19dd JB |
2229 | goto evapply; |
2230 | ||
2231 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
2232 | scm_make_cont (&t.arg1); | |
ca6ef71a | 2233 | if (setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
2234 | { |
2235 | SCM val; | |
2236 | val = SCM_THROW_VALUE (t.arg1); | |
a570e93a | 2237 | RETURN (val) |
0f2d19dd JB |
2238 | } |
2239 | proc = SCM_CDR (x); | |
2240 | proc = evalcar (proc, env); | |
2241 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
2242 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
2243 | ENTER_APPLY; | |
0f2d19dd JB |
2244 | goto evap1; |
2245 | ||
a570e93a MD |
2246 | case (SCM_ISYMNUM (SCM_IM_DELAY)): |
2247 | RETURN (scm_makprom (scm_closure (SCM_CDR (x), env))) | |
2248 | ||
89efbff4 | 2249 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
195847fa MD |
2250 | proc = SCM_CADR (x); /* unevaluated operands */ |
2251 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2252 | if (SCM_IMP (proc)) | |
2253 | arg2 = *scm_ilookup (proc, env); | |
2254 | else if (SCM_NCONSP (proc)) | |
2255 | { | |
2256 | if (SCM_NCELLP (proc)) | |
2257 | arg2 = SCM_GLOC_VAL (proc); | |
2258 | else | |
2259 | arg2 = *scm_lookupcar (SCM_CDR (x), env, 1); | |
2260 | } | |
2261 | else | |
2262 | { | |
2263 | arg2 = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2264 | t.lloc = SCM_CDRLOC (arg2); | |
2265 | while (SCM_NIMP (proc = SCM_CDR (proc))) | |
2266 | { | |
2267 | *t.lloc = scm_cons (EVALCAR (proc, env), SCM_EOL); | |
2268 | t.lloc = SCM_CDRLOC (*t.lloc); | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | type_dispatch: | |
61364ba6 MD |
2273 | /* The type dispatch code is duplicated here |
2274 | * (c.f. objects.c:scm_mcache_compute_cmethod) since that | |
2275 | * cuts down execution time for type dispatch to 50%. | |
2276 | */ | |
2277 | { | |
2278 | int i, n, end, mask; | |
2279 | SCM z = SCM_CDDR (x); | |
2280 | n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */ | |
2281 | proc = SCM_CADR (z); | |
2282 | ||
2283 | if (SCM_NIMP (proc)) | |
2284 | { | |
2285 | /* Prepare for linear search */ | |
2286 | mask = -1; | |
2287 | i = 0; | |
2288 | end = SCM_LENGTH (proc); | |
2289 | } | |
2290 | else | |
2291 | { | |
2292 | /* Compute a hash value */ | |
2293 | int hashset = SCM_INUM (proc); | |
2294 | int j = n; | |
2295 | mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z))); | |
2296 | proc = SCM_CADR (z); | |
2297 | i = 0; | |
2298 | t.arg1 = arg2; | |
2299 | if (SCM_NIMP (t.arg1)) | |
2300 | do | |
2301 | { | |
f1267706 | 2302 | i += SCM_UNPACK ((SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1)))) |
c209c88e | 2303 | [scm_si_hashsets + hashset]); |
61364ba6 MD |
2304 | t.arg1 = SCM_CDR (t.arg1); |
2305 | } | |
2306 | while (--j && SCM_NIMP (t.arg1)); | |
2307 | i &= mask; | |
2308 | end = i; | |
2309 | } | |
2310 | ||
2311 | /* Search for match */ | |
2312 | do | |
2313 | { | |
2314 | int j = n; | |
2315 | z = SCM_VELTS (proc)[i]; | |
2316 | t.arg1 = arg2; /* list of arguments */ | |
2317 | if (SCM_NIMP (t.arg1)) | |
2318 | do | |
2319 | { | |
2320 | /* More arguments than specifiers => CLASS != ENV */ | |
2321 | if (scm_class_of (SCM_CAR (t.arg1)) != SCM_CAR (z)) | |
2322 | goto next_method; | |
2323 | t.arg1 = SCM_CDR (t.arg1); | |
2324 | z = SCM_CDR (z); | |
2325 | } | |
2326 | while (--j && SCM_NIMP (t.arg1)); | |
2327 | /* Fewer arguments than specifiers => CAR != ENV */ | |
2328 | if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z)))) | |
2329 | goto next_method; | |
2330 | apply_cmethod: | |
2331 | env = EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (z)), | |
2332 | arg2, | |
2333 | SCM_CMETHOD_ENV (z)); | |
2334 | x = SCM_CMETHOD_CODE (z); | |
2335 | goto cdrxbegin; | |
2336 | next_method: | |
2337 | i = (i + 1) & mask; | |
2338 | } while (i != end); | |
2339 | ||
2340 | z = scm_memoize_method (x, arg2); | |
2341 | goto apply_cmethod; | |
2342 | } | |
73b64342 | 2343 | |
ca4be6ea MD |
2344 | case (SCM_ISYMNUM (SCM_IM_SLOT_REF)): |
2345 | x = SCM_CDR (x); | |
2346 | t.arg1 = EVALCAR (x, env); | |
7d2b68a8 | 2347 | RETURN (SCM_STRUCT_DATA (t.arg1)[SCM_INUM (SCM_CADR (x))]) |
ca4be6ea MD |
2348 | |
2349 | case (SCM_ISYMNUM (SCM_IM_SLOT_SET_X)): | |
2350 | x = SCM_CDR (x); | |
2351 | t.arg1 = EVALCAR (x, env); | |
2352 | x = SCM_CDR (x); | |
2353 | proc = SCM_CDR (x); | |
1f325865 MD |
2354 | SCM_STRUCT_DATA (t.arg1)[SCM_INUM (SCM_CAR (x))] |
2355 | = EVALCAR (proc, env); | |
5623a9b4 | 2356 | RETURN (SCM_UNSPECIFIED) |
ca4be6ea | 2357 | |
73b64342 MD |
2358 | case (SCM_ISYMNUM (SCM_IM_NIL_COND)): |
2359 | proc = SCM_CDR (x); | |
2360 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2361 | { | |
2362 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
2363 | || t.arg1 == scm_nil)) | |
2364 | { | |
2365 | if (SCM_CAR (x) == SCM_UNSPECIFIED) | |
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_NIL_IFY)): | |
2377 | x = SCM_CDR (x); | |
2378 | RETURN ((SCM_FALSEP (proc = EVALCAR (x, env)) || SCM_NULLP (proc)) | |
2379 | ? scm_nil | |
2380 | : proc) | |
2381 | ||
2382 | case (SCM_ISYMNUM (SCM_IM_T_IFY)): | |
2383 | x = SCM_CDR (x); | |
2384 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) ? scm_t : scm_nil) | |
2385 | ||
2386 | case (SCM_ISYMNUM (SCM_IM_0_COND)): | |
2387 | proc = SCM_CDR (x); | |
2388 | while (SCM_NIMP (x = SCM_CDR (proc))) | |
2389 | { | |
2390 | if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env)) | |
2391 | || t.arg1 == SCM_INUM0)) | |
2392 | { | |
2393 | if (SCM_CAR (x) == SCM_UNSPECIFIED) | |
2394 | RETURN (t.arg1); | |
2395 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2396 | goto carloop; | |
2397 | } | |
2398 | proc = SCM_CDR (x); | |
2399 | } | |
2400 | x = proc; | |
2401 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
2402 | goto carloop; | |
2403 | ||
2404 | case (SCM_ISYMNUM (SCM_IM_0_IFY)): | |
2405 | x = SCM_CDR (x); | |
2406 | RETURN (SCM_FALSEP (proc = EVALCAR (x, env)) | |
2407 | ? SCM_INUM0 | |
2408 | : proc) | |
2409 | ||
2410 | case (SCM_ISYMNUM (SCM_IM_1_IFY)): | |
2411 | x = SCM_CDR (x); | |
2412 | RETURN (SCM_NFALSEP (EVALCAR (x, env)) | |
2413 | ? SCM_MAKINUM (1) | |
2414 | : SCM_INUM0) | |
2415 | ||
2416 | case (SCM_ISYMNUM (SCM_IM_BIND)): | |
2417 | x = SCM_CDR (x); | |
2418 | ||
2419 | t.arg1 = SCM_CAR (x); | |
2420 | arg2 = SCM_CDAR (env); | |
2421 | while (SCM_NIMP (arg2)) | |
2422 | { | |
2423 | proc = SCM_GLOC_VAL (SCM_CAR (t.arg1)); | |
2424 | SCM_SETCDR (SCM_CAR (t.arg1) - 1L, SCM_CAR (arg2)); | |
2425 | SCM_SETCAR (arg2, proc); | |
2426 | t.arg1 = SCM_CDR (t.arg1); | |
2427 | arg2 = SCM_CDR (arg2); | |
2428 | } | |
2429 | t.arg1 = SCM_CAR (x); | |
2430 | scm_dynwinds = scm_acons (t.arg1, SCM_CDAR (env), scm_dynwinds); | |
89efbff4 | 2431 | |
73b64342 MD |
2432 | arg2 = x = SCM_CDR (x); |
2433 | while (SCM_NNULLP (arg2 = SCM_CDR (arg2))) | |
2434 | { | |
2435 | SIDEVAL (SCM_CAR (x), env); | |
2436 | x = arg2; | |
2437 | } | |
2438 | proc = EVALCAR (x, env); | |
2439 | ||
2440 | scm_dynwinds = SCM_CDR (scm_dynwinds); | |
2441 | arg2 = SCM_CDAR (env); | |
2442 | while (SCM_NIMP (arg2)) | |
2443 | { | |
2444 | SCM_SETCDR (SCM_CAR (t.arg1) - 1L, SCM_CAR (arg2)); | |
2445 | t.arg1 = SCM_CDR (t.arg1); | |
2446 | arg2 = SCM_CDR (arg2); | |
2447 | } | |
2448 | ||
2449 | RETURN (proc) | |
2450 | ||
0f2d19dd JB |
2451 | default: |
2452 | goto badfun; | |
2453 | } | |
2454 | ||
2455 | default: | |
2456 | proc = x; | |
2457 | badfun: | |
f5bf2977 | 2458 | /* scm_everr (x, env,...) */ |
523f5266 | 2459 | scm_misc_error (NULL, |
70d63753 | 2460 | "Wrong type to apply: ~S", |
523f5266 | 2461 | scm_listify (proc, SCM_UNDEFINED)); |
0f2d19dd JB |
2462 | case scm_tc7_vector: |
2463 | case scm_tc7_wvect: | |
afe5177e | 2464 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
2465 | case scm_tc7_bvect: |
2466 | case scm_tc7_byvect: | |
2467 | case scm_tc7_svect: | |
2468 | case scm_tc7_ivect: | |
2469 | case scm_tc7_uvect: | |
2470 | case scm_tc7_fvect: | |
2471 | case scm_tc7_dvect: | |
2472 | case scm_tc7_cvect: | |
5c11cc9d | 2473 | #ifdef HAVE_LONG_LONGS |
0f2d19dd | 2474 | case scm_tc7_llvect: |
afe5177e | 2475 | #endif |
0f2d19dd JB |
2476 | #endif |
2477 | case scm_tc7_string: | |
0f2d19dd | 2478 | case scm_tc7_substring: |
0f2d19dd JB |
2479 | case scm_tc7_smob: |
2480 | case scm_tcs_closures: | |
224822be MD |
2481 | #ifdef CCLO |
2482 | case scm_tc7_cclo: | |
2483 | #endif | |
89efbff4 | 2484 | case scm_tc7_pws: |
0f2d19dd JB |
2485 | case scm_tcs_subrs: |
2486 | RETURN (x); | |
2487 | ||
2488 | #ifdef MEMOIZE_LOCALS | |
c209c88e | 2489 | case SCM_BIT8(SCM_ILOC00): |
0f2d19dd JB |
2490 | proc = *scm_ilookup (SCM_CAR (x), env); |
2491 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2492 | #ifndef SCM_RECKLESS |
2493 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2494 | goto checkargs; |
2495 | #endif | |
2496 | #endif | |
2497 | break; | |
2498 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2499 | ||
2500 | ||
2501 | case scm_tcs_cons_gloc: | |
2502 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
aa00bd1e MD |
2503 | if (proc == 0) |
2504 | /* This is a struct implanted in the code, not a gloc. */ | |
2505 | RETURN (x); | |
0f2d19dd | 2506 | SCM_ASRTGO (SCM_NIMP (proc), badfun); |
cf7c17e9 JB |
2507 | #ifndef SCM_RECKLESS |
2508 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2509 | goto checkargs; |
2510 | #endif | |
2511 | #endif | |
2512 | break; | |
2513 | ||
2514 | ||
2515 | case scm_tcs_cons_nimcar: | |
2516 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2517 | { | |
f8769b1d | 2518 | #ifdef USE_THREADS |
26d5b9b4 | 2519 | t.lloc = scm_lookupcar1 (x, env, 1); |
f8769b1d MV |
2520 | if (t.lloc == NULL) |
2521 | { | |
2522 | /* we have lost the race, start again. */ | |
2523 | goto dispatch; | |
2524 | } | |
2525 | proc = *t.lloc; | |
2526 | #else | |
26d5b9b4 | 2527 | proc = *scm_lookupcar (x, env, 1); |
f8769b1d MV |
2528 | #endif |
2529 | ||
0f2d19dd JB |
2530 | if (SCM_IMP (proc)) |
2531 | { | |
2532 | unmemocar (x, env); | |
2533 | goto badfun; | |
2534 | } | |
2535 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2536 | { | |
2537 | unmemocar (x, env); | |
2538 | ||
2539 | handle_a_macro: | |
368bf056 | 2540 | #ifdef DEVAL |
7c354052 MD |
2541 | /* Set a flag during macro expansion so that macro |
2542 | application frames can be deleted from the backtrace. */ | |
2543 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2544 | #endif |
f8769b1d MV |
2545 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2546 | scm_cons (env, scm_listofnull)); | |
2547 | ||
7c354052 MD |
2548 | #ifdef DEVAL |
2549 | SCM_CLEAR_MACROEXP (debug); | |
2550 | #endif | |
f1267706 | 2551 | switch ((int) (SCM_UNPACK_CAR (proc) >> 16)) |
0f2d19dd JB |
2552 | { |
2553 | case 2: | |
2554 | if (scm_ilength (t.arg1) <= 0) | |
2555 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2556 | #ifdef DEVAL |
2557 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2558 | { | |
f8769b1d | 2559 | |
6dbd0af5 MD |
2560 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2561 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2562 | /* Prevent memoizing result of define macro */ | |
2563 | { | |
2564 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2565 | scm_set_source_properties_x (debug.info->e.exp, | |
2566 | scm_source_properties (x)); | |
2567 | } | |
2568 | #endif | |
2569 | SCM_DEFER_INTS; | |
a23afe53 MD |
2570 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2571 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2572 | SCM_ALLOW_INTS; |
2573 | goto dispatch; | |
2574 | } | |
2575 | /* Prevent memoizing of debug info expression. */ | |
6203706f MD |
2576 | debug.info->e.exp = scm_cons_source (debug.info->e.exp, |
2577 | SCM_CAR (x), | |
2578 | SCM_CDR (x)); | |
6dbd0af5 | 2579 | #endif |
0f2d19dd | 2580 | SCM_DEFER_INTS; |
a23afe53 MD |
2581 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2582 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2583 | SCM_ALLOW_INTS; |
6dbd0af5 | 2584 | goto loopnoap; |
0f2d19dd JB |
2585 | case 1: |
2586 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2587 | goto loopnoap; |
0f2d19dd JB |
2588 | case 0: |
2589 | RETURN (t.arg1); | |
2590 | } | |
2591 | } | |
2592 | } | |
2593 | else | |
2594 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2595 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2596 | #ifndef SCM_RECKLESS |
2597 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2598 | checkargs: |
2599 | #endif | |
2600 | if (SCM_CLOSUREP (proc)) | |
2601 | { | |
2602 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2603 | t.arg1 = SCM_CDR (x); | |
2604 | while (SCM_NIMP (arg2)) | |
2605 | { | |
2606 | if (SCM_NCONSP (arg2)) | |
2607 | goto evapply; | |
2608 | if (SCM_IMP (t.arg1)) | |
2609 | goto umwrongnumargs; | |
2610 | arg2 = SCM_CDR (arg2); | |
2611 | t.arg1 = SCM_CDR (t.arg1); | |
2612 | } | |
2613 | if (SCM_NNULLP (t.arg1)) | |
2614 | goto umwrongnumargs; | |
2615 | } | |
2616 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2617 | goto handle_a_macro; | |
2618 | #endif | |
2619 | } | |
2620 | ||
2621 | ||
6dbd0af5 MD |
2622 | evapply: |
2623 | PREP_APPLY (proc, SCM_EOL); | |
2624 | if (SCM_NULLP (SCM_CDR (x))) { | |
2625 | ENTER_APPLY; | |
89efbff4 | 2626 | evap0: |
0f2d19dd JB |
2627 | switch (SCM_TYP7 (proc)) |
2628 | { /* no arguments given */ | |
2629 | case scm_tc7_subr_0: | |
2630 | RETURN (SCM_SUBRF (proc) ()); | |
2631 | case scm_tc7_subr_1o: | |
2632 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2633 | case scm_tc7_lsubr: | |
2634 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2635 | case scm_tc7_rpsubr: | |
2636 | RETURN (SCM_BOOL_T); | |
2637 | case scm_tc7_asubr: | |
2638 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2639 | #ifdef CCLO |
0f2d19dd JB |
2640 | case scm_tc7_cclo: |
2641 | t.arg1 = proc; | |
2642 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2643 | #ifdef DEVAL |
2644 | debug.info->a.proc = proc; | |
2645 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2646 | #endif | |
0f2d19dd | 2647 | goto evap1; |
6dbd0af5 | 2648 | #endif |
89efbff4 MD |
2649 | case scm_tc7_pws: |
2650 | proc = SCM_PROCEDURE (proc); | |
2651 | #ifdef DEVAL | |
2652 | debug.info->a.proc = proc; | |
2653 | #endif | |
2654 | goto evap0; | |
0f2d19dd JB |
2655 | case scm_tcs_closures: |
2656 | x = SCM_CODE (proc); | |
e2806c10 | 2657 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2658 | goto cdrxbegin; |
da7f71d7 | 2659 | case scm_tcs_cons_gloc: |
195847fa MD |
2660 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2661 | { | |
2662 | x = SCM_ENTITY_PROCEDURE (proc); | |
2663 | arg2 = SCM_EOL; | |
2664 | goto type_dispatch; | |
2665 | } | |
2666 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2667 | goto badfun; |
2668 | else | |
da7f71d7 | 2669 | { |
195847fa MD |
2670 | t.arg1 = proc; |
2671 | proc = (SCM_I_ENTITYP (proc) | |
2672 | ? SCM_ENTITY_PROCEDURE (proc) | |
2673 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 | 2674 | #ifdef DEVAL |
195847fa MD |
2675 | debug.info->a.proc = proc; |
2676 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
da7f71d7 | 2677 | #endif |
195847fa MD |
2678 | if (SCM_NIMP (proc)) |
2679 | goto evap1; | |
2680 | else | |
2681 | goto badfun; | |
da7f71d7 | 2682 | } |
0f2d19dd JB |
2683 | case scm_tc7_contin: |
2684 | case scm_tc7_subr_1: | |
2685 | case scm_tc7_subr_2: | |
2686 | case scm_tc7_subr_2o: | |
2687 | case scm_tc7_cxr: | |
2688 | case scm_tc7_subr_3: | |
2689 | case scm_tc7_lsubr_2: | |
2690 | umwrongnumargs: | |
2691 | unmemocar (x, env); | |
2692 | wrongnumargs: | |
f5bf2977 GH |
2693 | /* scm_everr (x, env,...) */ |
2694 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2695 | default: |
2696 | /* handle macros here */ | |
2697 | goto badfun; | |
2698 | } | |
6dbd0af5 | 2699 | } |
0f2d19dd JB |
2700 | |
2701 | /* must handle macros by here */ | |
2702 | x = SCM_CDR (x); | |
cf7c17e9 | 2703 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2704 | if (SCM_IMP (x)) |
2705 | goto wrongnumargs; | |
680ed4a8 MD |
2706 | else if (SCM_CONSP (x)) |
2707 | { | |
2708 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2709 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2710 | else |
2711 | t.arg1 = EVALCELLCAR (x, env); | |
2712 | } | |
2713 | else if (SCM_TYP3 (x) == 1) | |
2714 | { | |
2715 | if ((t.arg1 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2716 | t.arg1 = SCM_CAR (x); /* struct planted in code */ | |
2717 | } | |
2718 | else | |
2719 | goto wrongnumargs; | |
2720 | #else | |
0f2d19dd | 2721 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2722 | #endif |
6dbd0af5 MD |
2723 | #ifdef DEVAL |
2724 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2725 | #endif | |
0f2d19dd JB |
2726 | x = SCM_CDR (x); |
2727 | if (SCM_NULLP (x)) | |
2728 | { | |
6dbd0af5 | 2729 | ENTER_APPLY; |
0f2d19dd JB |
2730 | evap1: |
2731 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2732 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2733 | case scm_tc7_subr_2o: |
2734 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2735 | case scm_tc7_subr_1: | |
2736 | case scm_tc7_subr_1o: | |
2737 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2738 | case scm_tc7_cxr: | |
2739 | #ifdef SCM_FLOATS | |
2740 | if (SCM_SUBRF (proc)) | |
2741 | { | |
2742 | if (SCM_INUMP (t.arg1)) | |
2743 | { | |
2744 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2745 | 0.0)); | |
2746 | } | |
2747 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2748 | if (SCM_REALP (t.arg1)) | |
2749 | { | |
2750 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2751 | } | |
2752 | #ifdef SCM_BIGDIG | |
2753 | if (SCM_BIGP (t.arg1)) | |
2754 | { | |
2755 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2756 | } | |
2757 | #endif | |
2758 | floerr: | |
9de33deb MD |
2759 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), t.arg1, |
2760 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd JB |
2761 | } |
2762 | #endif | |
2763 | proc = (SCM) SCM_SNAME (proc); | |
2764 | { | |
2765 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2766 | while ('c' != *--chrs) | |
2767 | { | |
0c95b57d | 2768 | SCM_ASSERT (SCM_CONSP (t.arg1), |
0f2d19dd JB |
2769 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); |
2770 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2771 | } | |
2772 | RETURN (t.arg1); | |
2773 | } | |
2774 | case scm_tc7_rpsubr: | |
2775 | RETURN (SCM_BOOL_T); | |
2776 | case scm_tc7_asubr: | |
2777 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2778 | case scm_tc7_lsubr: | |
2779 | #ifdef DEVAL | |
6dbd0af5 | 2780 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2781 | #else |
2782 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2783 | #endif | |
6dbd0af5 | 2784 | #ifdef CCLO |
0f2d19dd JB |
2785 | case scm_tc7_cclo: |
2786 | arg2 = t.arg1; | |
2787 | t.arg1 = proc; | |
2788 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2789 | #ifdef DEVAL |
2790 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2791 | debug.info->a.proc = proc; | |
2792 | #endif | |
0f2d19dd | 2793 | goto evap2; |
6dbd0af5 | 2794 | #endif |
89efbff4 MD |
2795 | case scm_tc7_pws: |
2796 | proc = SCM_PROCEDURE (proc); | |
2797 | #ifdef DEVAL | |
2798 | debug.info->a.proc = proc; | |
2799 | #endif | |
2800 | goto evap1; | |
0f2d19dd | 2801 | case scm_tcs_closures: |
195847fa | 2802 | /* clos1: */ |
0f2d19dd JB |
2803 | x = SCM_CODE (proc); |
2804 | #ifdef DEVAL | |
e2806c10 | 2805 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2806 | #else |
e2806c10 | 2807 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2808 | #endif |
2809 | goto cdrxbegin; | |
65e41721 MD |
2810 | case scm_tc7_contin: |
2811 | scm_call_continuation (proc, t.arg1); | |
0c32d76c | 2812 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2813 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2814 | { | |
195847fa | 2815 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2816 | #ifdef DEVAL |
2817 | arg2 = debug.info->a.args; | |
2818 | #else | |
2819 | arg2 = scm_cons (t.arg1, SCM_EOL); | |
2820 | #endif | |
f3d2630a MD |
2821 | goto type_dispatch; |
2822 | } | |
2823 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2824 | goto badfun; |
2825 | else | |
0c32d76c | 2826 | { |
195847fa MD |
2827 | arg2 = t.arg1; |
2828 | t.arg1 = proc; | |
2829 | proc = (SCM_I_ENTITYP (proc) | |
2830 | ? SCM_ENTITY_PROCEDURE (proc) | |
2831 | : SCM_OPERATOR_PROCEDURE (proc)); | |
0c32d76c | 2832 | #ifdef DEVAL |
195847fa MD |
2833 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); |
2834 | debug.info->a.proc = proc; | |
0c32d76c | 2835 | #endif |
195847fa MD |
2836 | if (SCM_NIMP (proc)) |
2837 | goto evap2; | |
2838 | else | |
2839 | goto badfun; | |
0c32d76c | 2840 | } |
0f2d19dd JB |
2841 | case scm_tc7_subr_2: |
2842 | case scm_tc7_subr_0: | |
2843 | case scm_tc7_subr_3: | |
2844 | case scm_tc7_lsubr_2: | |
2845 | goto wrongnumargs; | |
2846 | default: | |
2847 | goto badfun; | |
2848 | } | |
2849 | } | |
cf7c17e9 | 2850 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2851 | if (SCM_IMP (x)) |
2852 | goto wrongnumargs; | |
680ed4a8 MD |
2853 | else if (SCM_CONSP (x)) |
2854 | { | |
2855 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2856 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2857 | else |
2858 | arg2 = EVALCELLCAR (x, env); | |
2859 | } | |
2860 | else if (SCM_TYP3 (x) == 1) | |
2861 | { | |
2862 | if ((arg2 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2863 | arg2 = SCM_CAR (x); /* struct planted in code */ | |
2864 | } | |
2865 | else | |
2866 | goto wrongnumargs; | |
2867 | #else | |
2868 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2869 | #endif |
2870 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2871 | #ifdef DEVAL |
2872 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2873 | #endif | |
0f2d19dd JB |
2874 | x = SCM_CDR (x); |
2875 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2876 | ENTER_APPLY; |
0f2d19dd JB |
2877 | #ifdef CCLO |
2878 | evap2: | |
2879 | #endif | |
6dbd0af5 MD |
2880 | switch (SCM_TYP7 (proc)) |
2881 | { /* have two arguments */ | |
2882 | case scm_tc7_subr_2: | |
2883 | case scm_tc7_subr_2o: | |
2884 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2885 | case scm_tc7_lsubr: | |
0f2d19dd | 2886 | #ifdef DEVAL |
6dbd0af5 MD |
2887 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2888 | #else | |
2889 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2890 | #endif |
6dbd0af5 MD |
2891 | case scm_tc7_lsubr_2: |
2892 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2893 | case scm_tc7_rpsubr: | |
2894 | case scm_tc7_asubr: | |
2895 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2896 | #ifdef CCLO | |
2897 | cclon: | |
2898 | case scm_tc7_cclo: | |
0f2d19dd | 2899 | #ifdef DEVAL |
195847fa MD |
2900 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2901 | scm_cons (proc, debug.info->a.args), | |
2902 | SCM_EOL)); | |
0f2d19dd | 2903 | #else |
195847fa MD |
2904 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), |
2905 | scm_cons2 (proc, t.arg1, | |
2906 | scm_cons (arg2, | |
2907 | scm_eval_args (x, | |
2908 | env, | |
2909 | proc))), | |
2910 | SCM_EOL)); | |
0f2d19dd | 2911 | #endif |
6dbd0af5 MD |
2912 | /* case scm_tc7_cclo: |
2913 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2914 | arg2 = t.arg1; | |
2915 | t.arg1 = proc; | |
2916 | proc = SCM_CCLO_SUBR(proc); | |
2917 | goto evap3; */ | |
2918 | #endif | |
89efbff4 MD |
2919 | case scm_tc7_pws: |
2920 | proc = SCM_PROCEDURE (proc); | |
2921 | #ifdef DEVAL | |
2922 | debug.info->a.proc = proc; | |
2923 | #endif | |
2924 | goto evap2; | |
0c32d76c | 2925 | case scm_tcs_cons_gloc: |
f3d2630a MD |
2926 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
2927 | { | |
195847fa | 2928 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
2929 | #ifdef DEVAL |
2930 | arg2 = debug.info->a.args; | |
2931 | #else | |
2932 | arg2 = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2933 | #endif | |
f3d2630a MD |
2934 | goto type_dispatch; |
2935 | } | |
2936 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
2937 | goto badfun; |
2938 | else | |
0c32d76c | 2939 | { |
195847fa | 2940 | operatorn: |
0c32d76c | 2941 | #ifdef DEVAL |
195847fa MD |
2942 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) |
2943 | ? SCM_ENTITY_PROCEDURE (proc) | |
2944 | : SCM_OPERATOR_PROCEDURE (proc), | |
2945 | scm_cons (proc, debug.info->a.args), | |
2946 | SCM_EOL)); | |
2947 | #else | |
2948 | RETURN (SCM_APPLY (SCM_I_ENTITYP (proc) | |
2949 | ? SCM_ENTITY_PROCEDURE (proc) | |
2950 | : SCM_OPERATOR_PROCEDURE (proc), | |
2951 | scm_cons2 (proc, t.arg1, | |
2952 | scm_cons (arg2, | |
2953 | scm_eval_args (x, | |
2954 | env, | |
2955 | proc))), | |
2956 | SCM_EOL)); | |
2957 | #endif | |
0c32d76c | 2958 | } |
6dbd0af5 MD |
2959 | case scm_tc7_subr_0: |
2960 | case scm_tc7_cxr: | |
2961 | case scm_tc7_subr_1o: | |
2962 | case scm_tc7_subr_1: | |
2963 | case scm_tc7_subr_3: | |
2964 | case scm_tc7_contin: | |
2965 | goto wrongnumargs; | |
2966 | default: | |
2967 | goto badfun; | |
2968 | case scm_tcs_closures: | |
195847fa | 2969 | /* clos2: */ |
0f2d19dd | 2970 | #ifdef DEVAL |
da7f71d7 MD |
2971 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2972 | debug.info->a.args, | |
2973 | SCM_ENV (proc)); | |
0f2d19dd | 2974 | #else |
da7f71d7 MD |
2975 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2976 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2977 | #endif |
6dbd0af5 MD |
2978 | x = SCM_CODE (proc); |
2979 | goto cdrxbegin; | |
2980 | } | |
0f2d19dd | 2981 | } |
cf7c17e9 | 2982 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2983 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2984 | goto wrongnumargs; | |
2985 | #endif | |
0f2d19dd | 2986 | #ifdef DEVAL |
6dbd0af5 | 2987 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2988 | scm_deval_args (x, env, proc, |
2989 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2990 | #endif |
6dbd0af5 | 2991 | ENTER_APPLY; |
89efbff4 | 2992 | evap3: |
6dbd0af5 MD |
2993 | switch (SCM_TYP7 (proc)) |
2994 | { /* have 3 or more arguments */ | |
0f2d19dd | 2995 | #ifdef DEVAL |
6dbd0af5 MD |
2996 | case scm_tc7_subr_3: |
2997 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2998 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2999 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 3000 | case scm_tc7_asubr: |
399dedcc MD |
3001 | #ifdef BUILTIN_RPASUBR |
3002 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
3003 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
3004 | do |
3005 | { | |
3006 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
3007 | arg2 = SCM_CDR (arg2); | |
3008 | } | |
3009 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
3010 | RETURN (t.arg1) |
3011 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3012 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3013 | #ifdef BUILTIN_RPASUBR |
3014 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3015 | RETURN (SCM_BOOL_F) | |
3016 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
3017 | do |
3018 | { | |
3019 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
3020 | RETURN (SCM_BOOL_F) | |
3021 | arg2 = SCM_CAR (t.arg1); | |
3022 | t.arg1 = SCM_CDR (t.arg1); | |
3023 | } | |
3024 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
3025 | RETURN (SCM_BOOL_T) |
3026 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
3027 | RETURN (SCM_APPLY (proc, t.arg1, |
3028 | scm_acons (arg2, | |
3029 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
3030 | SCM_EOL))) | |
71d3aa6d | 3031 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 3032 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
3033 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
3034 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
3035 | case scm_tc7_lsubr: |
3036 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 3037 | #ifdef CCLO |
6dbd0af5 MD |
3038 | case scm_tc7_cclo: |
3039 | goto cclon; | |
0f2d19dd | 3040 | #endif |
89efbff4 MD |
3041 | case scm_tc7_pws: |
3042 | proc = SCM_PROCEDURE (proc); | |
3043 | debug.info->a.proc = proc; | |
3044 | goto evap3; | |
6dbd0af5 | 3045 | case scm_tcs_closures: |
b7ff98dd | 3046 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 3047 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
3048 | debug.info->a.args, |
3049 | SCM_ENV (proc)); | |
3050 | x = SCM_CODE (proc); | |
3051 | goto cdrxbegin; | |
3052 | #else /* DEVAL */ | |
3053 | case scm_tc7_subr_3: | |
3054 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
3055 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
3056 | case scm_tc7_asubr: | |
399dedcc | 3057 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
3058 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
3059 | do | |
3060 | { | |
3061 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
3062 | x = SCM_CDR(x); | |
3063 | } | |
3064 | while (SCM_NIMP (x)); | |
399dedcc MD |
3065 | RETURN (t.arg1) |
3066 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 3067 | case scm_tc7_rpsubr: |
71d3aa6d MD |
3068 | #ifdef BUILTIN_RPASUBR |
3069 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
3070 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
3071 | do |
3072 | { | |
3073 | t.arg1 = EVALCAR (x, env); | |
3074 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
3075 | RETURN (SCM_BOOL_F) | |
3076 | arg2 = t.arg1; | |
3077 | x = SCM_CDR (x); | |
3078 | } | |
3079 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
3080 | RETURN (SCM_BOOL_T) |
3081 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 3082 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
3083 | scm_acons (arg2, |
3084 | scm_eval_args (x, env, proc), | |
3085 | SCM_EOL))); | |
71d3aa6d | 3086 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 3087 | case scm_tc7_lsubr_2: |
680ed4a8 | 3088 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 3089 | case scm_tc7_lsubr: |
680ed4a8 MD |
3090 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
3091 | arg2, | |
3092 | scm_eval_args (x, env, proc)))); | |
0f2d19dd | 3093 | #ifdef CCLO |
6dbd0af5 MD |
3094 | case scm_tc7_cclo: |
3095 | goto cclon; | |
0f2d19dd | 3096 | #endif |
89efbff4 MD |
3097 | case scm_tc7_pws: |
3098 | proc = SCM_PROCEDURE (proc); | |
3099 | goto evap3; | |
6dbd0af5 MD |
3100 | case scm_tcs_closures: |
3101 | #ifdef DEVAL | |
b7ff98dd | 3102 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 3103 | #endif |
e2806c10 | 3104 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
3105 | scm_cons2 (t.arg1, |
3106 | arg2, | |
3107 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
3108 | SCM_ENV (proc)); |
3109 | x = SCM_CODE (proc); | |
3110 | goto cdrxbegin; | |
0f2d19dd | 3111 | #endif /* DEVAL */ |
0c32d76c | 3112 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3113 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3114 | { | |
3115 | #ifdef DEVAL | |
3116 | arg2 = debug.info->a.args; | |
3117 | #else | |
3118 | arg2 = scm_cons2 (t.arg1, arg2, scm_eval_args (x, env, proc)); | |
3119 | #endif | |
195847fa | 3120 | x = SCM_ENTITY_PROCEDURE (proc); |
f3d2630a MD |
3121 | goto type_dispatch; |
3122 | } | |
3123 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3124 | goto badfun; |
3125 | else | |
195847fa | 3126 | goto operatorn; |
6dbd0af5 MD |
3127 | case scm_tc7_subr_2: |
3128 | case scm_tc7_subr_1o: | |
3129 | case scm_tc7_subr_2o: | |
3130 | case scm_tc7_subr_0: | |
3131 | case scm_tc7_cxr: | |
3132 | case scm_tc7_subr_1: | |
3133 | case scm_tc7_contin: | |
3134 | goto wrongnumargs; | |
3135 | default: | |
3136 | goto badfun; | |
3137 | } | |
0f2d19dd JB |
3138 | } |
3139 | #ifdef DEVAL | |
6dbd0af5 | 3140 | exit: |
b6d75948 | 3141 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3142 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3143 | { |
b7ff98dd MD |
3144 | SCM_CLEAR_TRACED_FRAME (debug); |
3145 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3146 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3147 | else |
3148 | { | |
3149 | scm_make_cont (&t.arg1); | |
ca6ef71a | 3150 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
3151 | { |
3152 | proc = SCM_THROW_VALUE (t.arg1); | |
3153 | goto ret; | |
3154 | } | |
3155 | } | |
2f0d1375 | 3156 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3157 | } |
3158 | ret: | |
1646d37b | 3159 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3160 | return proc; |
3161 | #endif | |
3162 | } | |
3163 | ||
6dbd0af5 MD |
3164 | |
3165 | /* SECTION: This code is compiled once. | |
3166 | */ | |
3167 | ||
0f2d19dd JB |
3168 | #ifndef DEVAL |
3169 | ||
82a2622a | 3170 | /* This code processes the arguments to apply: |
b145c172 JB |
3171 | |
3172 | (apply PROC ARG1 ... ARGS) | |
3173 | ||
82a2622a JB |
3174 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
3175 | ... arguments onto the front of ARGS, and returns the resulting | |
3176 | list. Note that ARGS is a list; thus, the argument to this | |
3177 | function is a list whose last element is a list. | |
3178 | ||
3179 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
3180 | result. apply:nconc2last takes care of building the list of |
3181 | arguments, given (ARG1 ... ARGS). | |
3182 | ||
82a2622a JB |
3183 | Rather than do new consing, apply:nconc2last destroys its argument. |
3184 | On that topic, this code came into my care with the following | |
3185 | beautifully cryptic comment on that topic: "This will only screw | |
3186 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
3187 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 3188 | |
3b3b36dd | 3189 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
1bbd0b84 | 3190 | (SCM lst), |
b380b885 | 3191 | "") |
1bbd0b84 | 3192 | #define FUNC_NAME s_scm_nconc2last |
0f2d19dd JB |
3193 | { |
3194 | SCM *lloc; | |
c1bfcf60 | 3195 | SCM_VALIDATE_NONEMPTYLIST (1,lst); |
0f2d19dd JB |
3196 | lloc = &lst; |
3197 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 3198 | lloc = SCM_CDRLOC (*lloc); |
1bbd0b84 | 3199 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); |
0f2d19dd JB |
3200 | *lloc = SCM_CAR (*lloc); |
3201 | return lst; | |
3202 | } | |
1bbd0b84 | 3203 | #undef FUNC_NAME |
0f2d19dd JB |
3204 | |
3205 | #endif /* !DEVAL */ | |
3206 | ||
6dbd0af5 MD |
3207 | |
3208 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
3209 | * It is compiled twice. | |
3210 | */ | |
3211 | ||
0f2d19dd | 3212 | #if 0 |
1cc91f1b | 3213 | |
0f2d19dd | 3214 | SCM |
6e8d25a6 | 3215 | scm_apply (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3216 | {} |
3217 | #endif | |
3218 | ||
3219 | #if 0 | |
1cc91f1b | 3220 | |
0f2d19dd | 3221 | SCM |
6e8d25a6 GB |
3222 | scm_dapply (SCM proc, SCM arg1, SCM args) |
3223 | { /* empty */ } | |
0f2d19dd JB |
3224 | #endif |
3225 | ||
1cc91f1b | 3226 | |
82a2622a JB |
3227 | /* Apply a function to a list of arguments. |
3228 | ||
3229 | This function is exported to the Scheme level as taking two | |
3230 | required arguments and a tail argument, as if it were: | |
3231 | (lambda (proc arg1 . args) ...) | |
3232 | Thus, if you just have a list of arguments to pass to a procedure, | |
3233 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
3234 | args, pass the first as ARG1, then cons any remaining fixed args | |
3235 | onto the front of your argument list, and pass that as ARGS. */ | |
3236 | ||
0f2d19dd | 3237 | SCM |
1bbd0b84 | 3238 | SCM_APPLY (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3239 | { |
3240 | #ifdef DEBUG_EXTENSIONS | |
3241 | #ifdef DEVAL | |
6dbd0af5 | 3242 | scm_debug_frame debug; |
c0ab1b8d | 3243 | scm_debug_info debug_vect_body; |
1646d37b | 3244 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 3245 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 3246 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
3247 | debug.vect[0].a.proc = proc; |
3248 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 3249 | scm_last_debug_frame = &debug; |
0f2d19dd | 3250 | #else |
b7ff98dd | 3251 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
3252 | return scm_dapply (proc, arg1, args); |
3253 | #endif | |
3254 | #endif | |
3255 | ||
3256 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
3257 | |
3258 | /* If ARGS is the empty list, then we're calling apply with only two | |
3259 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
3260 | the case, futz with things so that ARG1 is the first argument to | |
3261 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
3262 | rest. |
3263 | ||
3264 | Setting the debug apply frame args this way is pretty messy. | |
3265 | Perhaps we should store arg1 and args directly in the frame as | |
3266 | received, and let scm_frame_arguments unpack them, because that's | |
3267 | a relatively rare operation. This works for now; if the Guile | |
3268 | developer archives are still around, see Mikael's post of | |
3269 | 11-Apr-97. */ | |
0f2d19dd JB |
3270 | if (SCM_NULLP (args)) |
3271 | { | |
3272 | if (SCM_NULLP (arg1)) | |
30000774 JB |
3273 | { |
3274 | arg1 = SCM_UNDEFINED; | |
3275 | #ifdef DEVAL | |
3276 | debug.vect[0].a.args = SCM_EOL; | |
3277 | #endif | |
3278 | } | |
0f2d19dd JB |
3279 | else |
3280 | { | |
30000774 JB |
3281 | #ifdef DEVAL |
3282 | debug.vect[0].a.args = arg1; | |
3283 | #endif | |
0f2d19dd JB |
3284 | args = SCM_CDR (arg1); |
3285 | arg1 = SCM_CAR (arg1); | |
3286 | } | |
3287 | } | |
3288 | else | |
3289 | { | |
0c95b57d | 3290 | /* SCM_ASRTGO(SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 3291 | args = scm_nconc2last (args); |
30000774 JB |
3292 | #ifdef DEVAL |
3293 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3294 | #endif | |
0f2d19dd | 3295 | } |
0f2d19dd | 3296 | #ifdef DEVAL |
b6d75948 | 3297 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
3298 | { |
3299 | SCM tmp; | |
b7ff98dd | 3300 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 3301 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3302 | else |
3303 | { | |
3304 | scm_make_cont (&tmp); | |
ca6ef71a | 3305 | if (setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
3306 | goto entap; |
3307 | } | |
2f0d1375 | 3308 | scm_ithrow (scm_sym_enter_frame, scm_cons (tmp, SCM_EOL), 0); |
6dbd0af5 MD |
3309 | } |
3310 | entap: | |
3311 | ENTER_APPLY; | |
3312 | #endif | |
3313 | #ifdef CCLO | |
3314 | tail: | |
0f2d19dd JB |
3315 | #endif |
3316 | switch (SCM_TYP7 (proc)) | |
3317 | { | |
3318 | case scm_tc7_subr_2o: | |
3319 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
3320 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3321 | case scm_tc7_subr_2: | |
269861c7 MD |
3322 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
3323 | wrongnumargs); | |
0f2d19dd JB |
3324 | args = SCM_CAR (args); |
3325 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
3326 | case scm_tc7_subr_0: | |
3327 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
3328 | RETURN (SCM_SUBRF (proc) ()) | |
3329 | case scm_tc7_subr_1: | |
3330 | case scm_tc7_subr_1o: | |
3331 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3332 | RETURN (SCM_SUBRF (proc) (arg1)) | |
3333 | case scm_tc7_cxr: | |
3334 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3335 | #ifdef SCM_FLOATS | |
3336 | if (SCM_SUBRF (proc)) | |
3337 | { | |
6dbd0af5 MD |
3338 | if (SCM_INUMP (arg1)) |
3339 | { | |
3340 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
3341 | } | |
0f2d19dd | 3342 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
3343 | if (SCM_REALP (arg1)) |
3344 | { | |
3345 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
3346 | } | |
0f2d19dd | 3347 | #ifdef SCM_BIGDIG |
26d5b9b4 | 3348 | if (SCM_BIGP (arg1)) |
0f2d19dd JB |
3349 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) |
3350 | #endif | |
3351 | floerr: | |
9de33deb MD |
3352 | SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), arg1, |
3353 | SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
0f2d19dd JB |
3354 | } |
3355 | #endif | |
3356 | proc = (SCM) SCM_SNAME (proc); | |
3357 | { | |
3358 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
3359 | while ('c' != *--chrs) | |
3360 | { | |
0c95b57d | 3361 | SCM_ASSERT (SCM_CONSP (arg1), |
0f2d19dd JB |
3362 | arg1, SCM_ARG1, SCM_CHARS (proc)); |
3363 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
3364 | } | |
3365 | RETURN (arg1) | |
3366 | } | |
3367 | case scm_tc7_subr_3: | |
3368 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
3369 | case scm_tc7_lsubr: | |
3370 | #ifdef DEVAL | |
6dbd0af5 | 3371 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
3372 | #else |
3373 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
3374 | #endif | |
3375 | case scm_tc7_lsubr_2: | |
0c95b57d | 3376 | SCM_ASRTGO (SCM_CONSP (args), wrongnumargs); |
0f2d19dd JB |
3377 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) |
3378 | case scm_tc7_asubr: | |
3379 | if (SCM_NULLP (args)) | |
3380 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
3381 | while (SCM_NIMP (args)) | |
3382 | { | |
3383 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3384 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
3385 | args = SCM_CDR (args); | |
3386 | } | |
3387 | RETURN (arg1); | |
3388 | case scm_tc7_rpsubr: | |
3389 | if (SCM_NULLP (args)) | |
3390 | RETURN (SCM_BOOL_T); | |
3391 | while (SCM_NIMP (args)) | |
3392 | { | |
3393 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
3394 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
3395 | RETURN (SCM_BOOL_F); | |
3396 | arg1 = SCM_CAR (args); | |
3397 | args = SCM_CDR (args); | |
3398 | } | |
3399 | RETURN (SCM_BOOL_T); | |
3400 | case scm_tcs_closures: | |
3401 | #ifdef DEVAL | |
6dbd0af5 | 3402 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
3403 | #else |
3404 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3405 | #endif | |
cf7c17e9 | 3406 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3407 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3408 | goto wrongnumargs; | |
3409 | #endif | |
1609038c MD |
3410 | |
3411 | /* Copy argument list */ | |
3412 | if (SCM_IMP (arg1)) | |
3413 | args = arg1; | |
3414 | else | |
3415 | { | |
3416 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
cabe682c | 3417 | while (arg1 = SCM_CDR (arg1), SCM_CONSP (arg1)) |
1609038c MD |
3418 | { |
3419 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3420 | SCM_UNSPECIFIED)); | |
3421 | tl = SCM_CDR (tl); | |
3422 | } | |
3423 | SCM_SETCDR (tl, arg1); | |
3424 | } | |
3425 | ||
3426 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
2ddb0920 | 3427 | proc = SCM_CDR (SCM_CODE (proc)); |
e791c18f MD |
3428 | again: |
3429 | arg1 = proc; | |
3430 | while (SCM_NNULLP (arg1 = SCM_CDR (arg1))) | |
2ddb0920 MD |
3431 | { |
3432 | if (SCM_IMP (SCM_CAR (proc))) | |
3433 | { | |
3434 | if (SCM_ISYMP (SCM_CAR (proc))) | |
3435 | { | |
3436 | proc = scm_m_expand_body (proc, args); | |
e791c18f | 3437 | goto again; |
2ddb0920 | 3438 | } |
2ddb0920 MD |
3439 | } |
3440 | else | |
e791c18f MD |
3441 | SCM_CEVAL (SCM_CAR (proc), args); |
3442 | proc = arg1; | |
2ddb0920 | 3443 | } |
e791c18f | 3444 | RETURN (EVALCAR (proc, args)); |
0f2d19dd JB |
3445 | case scm_tc7_contin: |
3446 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3447 | scm_call_continuation (proc, arg1); | |
3448 | #ifdef CCLO | |
3449 | case scm_tc7_cclo: | |
3450 | #ifdef DEVAL | |
6dbd0af5 MD |
3451 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3452 | arg1 = proc; | |
3453 | proc = SCM_CCLO_SUBR (proc); | |
3454 | debug.vect[0].a.proc = proc; | |
3455 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3456 | #else |
3457 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3458 | arg1 = proc; |
3459 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3460 | #endif |
0f2d19dd JB |
3461 | goto tail; |
3462 | #endif | |
89efbff4 MD |
3463 | case scm_tc7_pws: |
3464 | proc = SCM_PROCEDURE (proc); | |
3465 | #ifdef DEVAL | |
3466 | debug.vect[0].a.proc = proc; | |
3467 | #endif | |
3468 | goto tail; | |
0c32d76c | 3469 | case scm_tcs_cons_gloc: |
f3d2630a MD |
3470 | if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC) |
3471 | { | |
3472 | #ifdef DEVAL | |
3473 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3474 | #else | |
3475 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3476 | #endif | |
195847fa | 3477 | RETURN (scm_apply_generic (proc, args)); |
f3d2630a MD |
3478 | } |
3479 | else if (!SCM_I_OPERATORP (proc)) | |
9b07e212 MD |
3480 | goto badproc; |
3481 | else | |
da7f71d7 MD |
3482 | { |
3483 | #ifdef DEVAL | |
3484 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3485 | #else | |
3486 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3487 | #endif | |
3488 | arg1 = proc; | |
195847fa MD |
3489 | proc = (SCM_I_ENTITYP (proc) |
3490 | ? SCM_ENTITY_PROCEDURE (proc) | |
3491 | : SCM_OPERATOR_PROCEDURE (proc)); | |
da7f71d7 MD |
3492 | #ifdef DEVAL |
3493 | debug.vect[0].a.proc = proc; | |
3494 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3495 | #endif | |
195847fa MD |
3496 | if (SCM_NIMP (proc)) |
3497 | goto tail; | |
3498 | else | |
3499 | goto badproc; | |
da7f71d7 | 3500 | } |
0f2d19dd | 3501 | wrongnumargs: |
f5bf2977 | 3502 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3503 | default: |
3504 | badproc: | |
3505 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3506 | RETURN (arg1); | |
3507 | } | |
3508 | #ifdef DEVAL | |
6dbd0af5 | 3509 | exit: |
b6d75948 | 3510 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3511 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3512 | { |
b7ff98dd MD |
3513 | SCM_CLEAR_TRACED_FRAME (debug); |
3514 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3515 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3516 | else |
3517 | { | |
3518 | scm_make_cont (&arg1); | |
ca6ef71a | 3519 | if (setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
3520 | { |
3521 | proc = SCM_THROW_VALUE (arg1); | |
3522 | goto ret; | |
3523 | } | |
3524 | } | |
2f0d1375 | 3525 | scm_ithrow (scm_sym_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); |
6dbd0af5 MD |
3526 | } |
3527 | ret: | |
1646d37b | 3528 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3529 | return proc; |
3530 | #endif | |
3531 | } | |
3532 | ||
6dbd0af5 MD |
3533 | |
3534 | /* SECTION: The rest of this file is only read once. | |
3535 | */ | |
3536 | ||
0f2d19dd JB |
3537 | #ifndef DEVAL |
3538 | ||
d9c393f5 JB |
3539 | /* Typechecking for multi-argument MAP and FOR-EACH. |
3540 | ||
47c3f06d | 3541 | Verify that each element of the vector ARGV, except for the first, |
d9c393f5 | 3542 | is a proper list whose length is LEN. Attribute errors to WHO, |
47c3f06d | 3543 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ |
d9c393f5 | 3544 | static inline void |
47c3f06d MD |
3545 | check_map_args (SCM argv, |
3546 | long len, | |
3547 | SCM gf, | |
3548 | SCM proc, | |
3549 | SCM args, | |
3550 | const char *who) | |
d9c393f5 | 3551 | { |
47c3f06d | 3552 | SCM *ve = SCM_VELTS (argv); |
d9c393f5 JB |
3553 | int i; |
3554 | ||
47c3f06d | 3555 | for (i = SCM_LENGTH (argv) - 1; i >= 1; i--) |
d9c393f5 JB |
3556 | { |
3557 | int elt_len = scm_ilength (ve[i]); | |
3558 | ||
3559 | if (elt_len < 0) | |
47c3f06d MD |
3560 | { |
3561 | if (gf) | |
3562 | scm_apply_generic (gf, scm_cons (proc, args)); | |
3563 | else | |
3564 | scm_wrong_type_arg (who, i + 2, ve[i]); | |
3565 | } | |
d9c393f5 JB |
3566 | |
3567 | if (elt_len != len) | |
3568 | scm_out_of_range (who, ve[i]); | |
3569 | } | |
3570 | ||
47c3f06d | 3571 | scm_remember (&argv); |
d9c393f5 JB |
3572 | } |
3573 | ||
3574 | ||
47c3f06d | 3575 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
1cc91f1b | 3576 | |
368bf056 MD |
3577 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3578 | sequentially, starting with the first element(s). This is used in | |
3579 | evalext.c where the Scheme procedure `serial-map', which guarantees | |
3580 | sequential behaviour, is implemented using scm_map. If the | |
3581 | behaviour changes, we need to update `serial-map'. | |
3582 | */ | |
3583 | ||
0f2d19dd | 3584 | SCM |
1bbd0b84 | 3585 | scm_map (SCM proc, SCM arg1, SCM args) |
0f2d19dd | 3586 | { |
d9c393f5 | 3587 | long i, len; |
0f2d19dd JB |
3588 | SCM res = SCM_EOL; |
3589 | SCM *pres = &res; | |
3590 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3591 | ||
3592 | if (SCM_NULLP (arg1)) | |
3593 | return res; | |
d9c393f5 | 3594 | len = scm_ilength (arg1); |
47c3f06d MD |
3595 | SCM_GASSERTn (len >= 0, |
3596 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
0f2d19dd JB |
3597 | if (SCM_NULLP (args)) |
3598 | { | |
3599 | while (SCM_NIMP (arg1)) | |
3600 | { | |
47c3f06d MD |
3601 | SCM_GASSERT2 (SCM_CONSP (arg1), g_map, proc, arg1, SCM_ARG2, s_map); |
3602 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), | |
3603 | SCM_EOL); | |
a23afe53 | 3604 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3605 | arg1 = SCM_CDR (arg1); |
3606 | } | |
3607 | return res; | |
3608 | } | |
47c3f06d | 3609 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3610 | ve = SCM_VELTS (args); |
cf7c17e9 | 3611 | #ifndef SCM_RECKLESS |
47c3f06d | 3612 | check_map_args (args, len, g_map, proc, arg1, s_map); |
0f2d19dd JB |
3613 | #endif |
3614 | while (1) | |
3615 | { | |
3616 | arg1 = SCM_EOL; | |
3617 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3618 | { | |
d9c393f5 JB |
3619 | if (SCM_IMP (ve[i])) |
3620 | return res; | |
0f2d19dd JB |
3621 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); |
3622 | ve[i] = SCM_CDR (ve[i]); | |
3623 | } | |
3624 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3625 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3626 | } |
3627 | } | |
3628 | ||
3629 | ||
47c3f06d | 3630 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
1cc91f1b | 3631 | |
0f2d19dd | 3632 | SCM |
1bbd0b84 | 3633 | scm_for_each (SCM proc, SCM arg1, SCM args) |
0f2d19dd JB |
3634 | { |
3635 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
d9c393f5 | 3636 | long i, len; |
0f2d19dd JB |
3637 | if SCM_NULLP (arg1) |
3638 | return SCM_UNSPECIFIED; | |
d9c393f5 | 3639 | len = scm_ilength (arg1); |
47c3f06d MD |
3640 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), |
3641 | SCM_ARG2, s_for_each); | |
0f2d19dd JB |
3642 | if SCM_NULLP (args) |
3643 | { | |
3644 | while SCM_NIMP (arg1) | |
3645 | { | |
47c3f06d MD |
3646 | SCM_GASSERT2 (SCM_CONSP (arg1), |
3647 | g_for_each, proc, arg1, SCM_ARG2, s_for_each); | |
0f2d19dd JB |
3648 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); |
3649 | arg1 = SCM_CDR (arg1); | |
3650 | } | |
3651 | return SCM_UNSPECIFIED; | |
3652 | } | |
47c3f06d | 3653 | args = scm_vector (arg1 = scm_cons (arg1, args)); |
0f2d19dd | 3654 | ve = SCM_VELTS (args); |
cf7c17e9 | 3655 | #ifndef SCM_RECKLESS |
47c3f06d | 3656 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); |
0f2d19dd JB |
3657 | #endif |
3658 | while (1) | |
3659 | { | |
3660 | arg1 = SCM_EOL; | |
3661 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3662 | { | |
3663 | if SCM_IMP | |
3664 | (ve[i]) return SCM_UNSPECIFIED; | |
3665 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3666 | ve[i] = SCM_CDR (ve[i]); | |
3667 | } | |
3668 | scm_apply (proc, arg1, SCM_EOL); | |
3669 | } | |
3670 | } | |
3671 | ||
3672 | ||
1cc91f1b | 3673 | |
0f2d19dd | 3674 | SCM |
6e8d25a6 | 3675 | scm_closure (SCM code, SCM env) |
0f2d19dd JB |
3676 | { |
3677 | register SCM z; | |
3678 | SCM_NEWCELL (z); | |
3679 | SCM_SETCODE (z, code); | |
a23afe53 | 3680 | SCM_SETENV (z, env); |
0f2d19dd JB |
3681 | return z; |
3682 | } | |
3683 | ||
3684 | ||
3685 | long scm_tc16_promise; | |
1cc91f1b | 3686 | |
0f2d19dd | 3687 | SCM |
6e8d25a6 | 3688 | scm_makprom (SCM code) |
0f2d19dd | 3689 | { |
23a62151 | 3690 | SCM_RETURN_NEWSMOB (scm_tc16_promise, code); |
0f2d19dd JB |
3691 | } |
3692 | ||
3693 | ||
1cc91f1b | 3694 | |
0f2d19dd | 3695 | static int |
1bbd0b84 | 3696 | prinprom (SCM exp,SCM port,scm_print_state *pstate) |
0f2d19dd | 3697 | { |
19402679 | 3698 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3699 | scm_puts ("#<promise ", port); |
19402679 MD |
3700 | SCM_SET_WRITINGP (pstate, 1); |
3701 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3702 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3703 | scm_putc ('>', port); |
0f2d19dd JB |
3704 | return !0; |
3705 | } | |
3706 | ||
3707 | ||
3b3b36dd | 3708 | SCM_DEFINE (scm_force, "force", 1, 0, 0, |
1bbd0b84 | 3709 | (SCM x), |
b380b885 | 3710 | "") |
1bbd0b84 | 3711 | #define FUNC_NAME s_scm_force |
0f2d19dd | 3712 | { |
3b3b36dd | 3713 | SCM_VALIDATE_SMOB (1,x,promise); |
f1267706 | 3714 | if (!((1L << 16) & SCM_UNPACK_CAR (x))) |
0f2d19dd JB |
3715 | { |
3716 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
f1267706 | 3717 | if (!((1L << 16) & SCM_UNPACK_CAR (x))) |
0f2d19dd JB |
3718 | { |
3719 | SCM_DEFER_INTS; | |
a23afe53 MD |
3720 | SCM_SETCDR (x, ans); |
3721 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3722 | SCM_ALLOW_INTS; |
3723 | } | |
3724 | } | |
3725 | return SCM_CDR (x); | |
3726 | } | |
1bbd0b84 | 3727 | #undef FUNC_NAME |
0f2d19dd | 3728 | |
a1ec6916 | 3729 | SCM_DEFINE (scm_promise_p, "promise?", 1, 0, 0, |
1bbd0b84 | 3730 | (SCM x), |
b380b885 MD |
3731 | "Return true if @var{obj} is a promise, i.e. a delayed computation\n" |
3732 | "(@pxref{Delayed evaluation,,,r4rs.info,The Revised^4 Report on Scheme}).") | |
1bbd0b84 | 3733 | #define FUNC_NAME s_scm_promise_p |
0f2d19dd | 3734 | { |
1bbd0b84 | 3735 | return SCM_BOOL(SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)); |
0f2d19dd | 3736 | } |
1bbd0b84 | 3737 | #undef FUNC_NAME |
0f2d19dd | 3738 | |
a1ec6916 | 3739 | SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0, |
1bbd0b84 | 3740 | (SCM xorig, SCM x, SCM y), |
b380b885 | 3741 | "") |
1bbd0b84 | 3742 | #define FUNC_NAME s_scm_cons_source |
26d5b9b4 MD |
3743 | { |
3744 | SCM p, z; | |
3745 | SCM_NEWCELL (z); | |
3746 | SCM_SETCAR (z, x); | |
3747 | SCM_SETCDR (z, y); | |
3748 | /* Copy source properties possibly associated with xorig. */ | |
3749 | p = scm_whash_lookup (scm_source_whash, xorig); | |
3750 | if (SCM_NIMP (p)) | |
3751 | scm_whash_insert (scm_source_whash, z, p); | |
3752 | return z; | |
3753 | } | |
1bbd0b84 | 3754 | #undef FUNC_NAME |
26d5b9b4 | 3755 | |
a1ec6916 | 3756 | SCM_DEFINE (scm_copy_tree, "copy-tree", 1, 0, 0, |
1bbd0b84 | 3757 | (SCM obj), |
b380b885 MD |
3758 | "Recursively copy the data tree that is bound to @var{obj}, and return a\n" |
3759 | "pointer to the new data structure. @code{copy-tree} recurses down the\n" | |
3760 | "contents of both pairs and vectors (since both cons cells and vector\n" | |
3761 | "cells may point to arbitrary objects), and stops recursing when it hits\n" | |
3762 | "any other object.") | |
1bbd0b84 | 3763 | #define FUNC_NAME s_scm_copy_tree |
0f2d19dd JB |
3764 | { |
3765 | SCM ans, tl; | |
26d5b9b4 | 3766 | if (SCM_IMP (obj)) |
ff467021 | 3767 | return obj; |
3910272e MD |
3768 | if (SCM_VECTORP (obj)) |
3769 | { | |
3770 | scm_sizet i = SCM_LENGTH (obj); | |
3771 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); | |
3772 | while (i--) | |
3773 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3774 | return ans; | |
3775 | } | |
ff467021 | 3776 | if (SCM_NCONSP (obj)) |
0f2d19dd JB |
3777 | return obj; |
3778 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
26d5b9b4 MD |
3779 | ans = tl = scm_cons_source (obj, |
3780 | scm_copy_tree (SCM_CAR (obj)), | |
3781 | SCM_UNSPECIFIED); | |
cabe682c | 3782 | while (obj = SCM_CDR (obj), SCM_CONSP (obj)) |
a23afe53 MD |
3783 | { |
3784 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3785 | SCM_UNSPECIFIED)); | |
3786 | tl = SCM_CDR (tl); | |
3787 | } | |
3788 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3789 | return ans; |
3790 | } | |
1bbd0b84 | 3791 | #undef FUNC_NAME |
0f2d19dd | 3792 | |
1cc91f1b | 3793 | |
0f2d19dd | 3794 | SCM |
1bbd0b84 | 3795 | scm_eval_3 (SCM obj, int copyp, SCM env) |
0f2d19dd JB |
3796 | { |
3797 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3798 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3799 | else if (copyp) | |
3800 | obj = scm_copy_tree (obj); | |
6cb702da | 3801 | return SCM_XEVAL (obj, env); |
0f2d19dd JB |
3802 | } |
3803 | ||
3b3b36dd | 3804 | SCM_DEFINE (scm_eval2, "eval2", 2, 0, 0, |
1bbd0b84 | 3805 | (SCM obj, SCM env_thunk), |
b380b885 MD |
3806 | "Evaluate @var{exp}, a Scheme expression, in the environment designated\n" |
3807 | "by @var{lookup}, a symbol-lookup function. @code{(eval exp)} is\n" | |
3808 | "equivalent to @code{(eval2 exp *top-level-lookup-closure*)}.") | |
1bbd0b84 | 3809 | #define FUNC_NAME s_scm_eval2 |
0f2d19dd | 3810 | { |
6bcb0868 | 3811 | return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk)); |
0f2d19dd | 3812 | } |
1bbd0b84 | 3813 | #undef FUNC_NAME |
0f2d19dd | 3814 | |
3b3b36dd | 3815 | SCM_DEFINE (scm_eval, "eval", 1, 0, 0, |
1bbd0b84 | 3816 | (SCM obj), |
b380b885 MD |
3817 | "Evaluate @var{exp}, a list representing a Scheme expression, in the\n" |
3818 | "top-level environment.") | |
1bbd0b84 | 3819 | #define FUNC_NAME s_scm_eval |
0f2d19dd | 3820 | { |
6bcb0868 MD |
3821 | return scm_eval_3 (obj, |
3822 | 1, | |
3823 | scm_top_level_env | |
3824 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd | 3825 | } |
1bbd0b84 | 3826 | #undef FUNC_NAME |
0f2d19dd | 3827 | |
1bbd0b84 GB |
3828 | /* |
3829 | SCM_REGISTER_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); | |
3830 | */ | |
1cc91f1b | 3831 | |
0f2d19dd | 3832 | SCM |
1bbd0b84 | 3833 | scm_eval_x (SCM obj) |
0f2d19dd | 3834 | { |
6bcb0868 MD |
3835 | return scm_eval_3 (obj, |
3836 | 0, | |
3837 | scm_top_level_env | |
3838 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3839 | } |
3840 | ||
6dbd0af5 MD |
3841 | |
3842 | /* At this point, scm_deval and scm_dapply are generated. | |
3843 | */ | |
3844 | ||
0f2d19dd | 3845 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3846 | # define DEVAL |
3847 | # include "eval.c" | |
0f2d19dd JB |
3848 | #endif |
3849 | ||
3850 | ||
1cc91f1b | 3851 | |
0f2d19dd JB |
3852 | void |
3853 | scm_init_eval () | |
0f2d19dd | 3854 | { |
33b97402 MD |
3855 | scm_init_opts (scm_evaluator_traps, |
3856 | scm_evaluator_trap_table, | |
3857 | SCM_N_EVALUATOR_TRAPS); | |
3858 | scm_init_opts (scm_eval_options_interface, | |
3859 | scm_eval_opts, | |
3860 | SCM_N_EVAL_OPTIONS); | |
3861 | ||
f99c9c28 MD |
3862 | scm_tc16_promise = scm_make_smob_type ("promise", 0); |
3863 | scm_set_smob_mark (scm_tc16_promise, scm_markcdr); | |
3864 | scm_set_smob_print (scm_tc16_promise, prinprom); | |
b8229a3b | 3865 | |
81123e6d | 3866 | scm_f_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
0f2d19dd | 3867 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); |
2f0d1375 MD |
3868 | scm_sym_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); |
3869 | scm_sym_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3870 | scm_sym_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3871 | scm_sym_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3872 | scm_sym_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
0f2d19dd | 3873 | |
73b64342 MD |
3874 | scm_nil = scm_sysintern ("nil", SCM_UNDEFINED); |
3875 | SCM_SETCDR (scm_nil, SCM_CAR (scm_nil)); | |
3876 | scm_nil = SCM_CAR (scm_nil); | |
3877 | scm_t = scm_sysintern ("t", SCM_UNDEFINED); | |
3878 | SCM_SETCDR (scm_t, SCM_CAR (scm_t)); | |
3879 | scm_t = SCM_CAR (scm_t); | |
73b64342 | 3880 | |
0f2d19dd | 3881 | /* acros */ |
0f2d19dd JB |
3882 | /* end of acros */ |
3883 | ||
dc19d1d2 JB |
3884 | scm_top_level_lookup_closure_var = |
3885 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3886 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3887 | |
6dbd0af5 | 3888 | #ifdef DEBUG_EXTENSIONS |
2f0d1375 MD |
3889 | scm_sym_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); |
3890 | scm_sym_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3891 | scm_sym_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3892 | scm_sym_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
6dbd0af5 MD |
3893 | #endif |
3894 | ||
0f2d19dd | 3895 | #include "eval.x" |
25eaf21a MD |
3896 | |
3897 | scm_add_feature ("delay"); | |
0f2d19dd | 3898 | } |
0f2d19dd | 3899 | |
6dbd0af5 | 3900 | #endif /* !DEVAL */ |