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9b8d3288 | 1 | /* Copyright (C) 1995,1996,1997 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. */ |
0f2d19dd JB |
41 | \f |
42 | ||
6dbd0af5 MD |
43 | /* This file is read twice in order to produce debugging versions of |
44 | * scm_ceval and scm_apply. These functions, scm_deval and | |
45 | * scm_dapply, are produced when we define the preprocessor macro | |
46 | * DEVAL. The file is divided into sections which are treated | |
47 | * differently with respect to DEVAL. The heads of these sections are | |
48 | * marked with the string "SECTION:". | |
49 | */ | |
50 | ||
51 | ||
52 | /* SECTION: This code is compiled once. | |
0f2d19dd JB |
53 | */ |
54 | ||
55 | #ifndef DEVAL | |
56 | ||
d16332b3 JB |
57 | /* We need this to get the definitions for HAVE_ALLOCA_H, etc. */ |
58 | #include "scmconfig.h" | |
59 | ||
48b96f4b JB |
60 | /* AIX requires this to be the first thing in the file. The #pragma |
61 | directive is indented so pre-ANSI compilers will ignore it, rather | |
62 | than choke on it. */ | |
5862b540 | 63 | #ifndef __GNUC__ |
48b96f4b JB |
64 | # if HAVE_ALLOCA_H |
65 | # include <alloca.h> | |
66 | # else | |
67 | # ifdef _AIX | |
68 | #pragma alloca | |
69 | # else | |
70 | # ifndef alloca /* predefined by HP cc +Olibcalls */ | |
71 | char *alloca (); | |
72 | # endif | |
73 | # endif | |
74 | # endif | |
75 | #endif | |
76 | ||
0f2d19dd JB |
77 | #include <stdio.h> |
78 | #include "_scm.h" | |
20e6290e | 79 | #include "debug.h" |
20e6290e | 80 | #include "alist.h" |
20e6290e JB |
81 | #include "eq.h" |
82 | #include "continuations.h" | |
83 | #include "throw.h" | |
84 | #include "smob.h" | |
85 | #include "markers.h" | |
86 | #include "procprop.h" | |
87 | #include "hashtab.h" | |
ac46ab16 | 88 | #include "hash.h" |
0f2d19dd | 89 | |
20e6290e JB |
90 | #ifdef DEBUG_EXTENSIONS |
91 | #include "debug.h" | |
92 | #endif /* DEBUG_EXTENSIONS */ | |
93 | ||
94 | #include "srcprop.h" | |
95 | #include "stackchk.h" | |
96 | ||
97 | #include "eval.h" | |
0f2d19dd JB |
98 | \f |
99 | ||
6dbd0af5 MD |
100 | /* The evaluator contains a plethora of EVAL symbols. |
101 | * This is an attempt at explanation. | |
102 | * | |
103 | * The following macros should be used in code which is read twice | |
104 | * (where the choice of evaluator is hard soldered): | |
105 | * | |
106 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
107 | * Originally, it is defined to scm_ceval, but is redefined to | |
108 | * scm_deval during the second pass. | |
109 | * | |
110 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
111 | * only side effects of expressions matter. All immediates are | |
112 | * ignored. | |
113 | * | |
114 | * EVALIM is used when it is known that the expression is an | |
115 | * immediate. (This macro never calls an evaluator.) | |
116 | * | |
117 | * EVALCAR evaluates the car of an expression. | |
118 | * | |
119 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
120 | * car is a lisp cell. | |
121 | * | |
122 | * The following macros should be used in code which is read once | |
123 | * (where the choice of evaluator is dynamic): | |
124 | * | |
125 | * XEVAL takes care of immediates without calling an evaluator. It | |
126 | * then calls scm_ceval *or* scm_deval, depending on the debugging | |
127 | * mode. | |
128 | * | |
129 | * XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval | |
130 | * depending on the debugging mode. | |
131 | * | |
132 | * The main motivation for keeping this plethora is efficiency | |
133 | * together with maintainability (=> locality of code). | |
134 | */ | |
135 | ||
0f2d19dd JB |
136 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR(x)) \ |
137 | ? *scm_lookupcar(x, env) \ | |
138 | : SCM_CEVAL(SCM_CAR(x), env)) | |
139 | ||
140 | #ifdef MEMOIZE_LOCALS | |
6dbd0af5 | 141 | #define EVALIM(x, env) (SCM_ILOCP(x)?*scm_ilookup((x), env):x) |
0f2d19dd | 142 | #else |
6dbd0af5 | 143 | #define EVALIM(x, env) x |
0f2d19dd JB |
144 | #endif |
145 | #define EVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x))\ | |
146 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 147 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
148 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
149 | : EVALCELLCAR(x, env)) | |
150 | #ifdef DEBUG_EXTENSIONS | |
151 | #define XEVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x)) \ | |
152 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 153 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
154 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
155 | : (SCM_SYMBOLP(SCM_CAR(x)) \ | |
156 | ? *scm_lookupcar(x, env) \ | |
157 | : (*scm_ceval_ptr) (SCM_CAR(x), env))) | |
158 | #else | |
159 | #define XEVALCAR(x, env) EVALCAR(x, env) | |
160 | #endif | |
161 | ||
e2806c10 | 162 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
163 | |
164 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 165 | |
0f2d19dd JB |
166 | SCM * |
167 | scm_ilookup (iloc, env) | |
168 | SCM iloc; | |
169 | SCM env; | |
0f2d19dd JB |
170 | { |
171 | register int ir = SCM_IFRAME (iloc); | |
172 | register SCM er = env; | |
173 | for (; 0 != ir; --ir) | |
174 | er = SCM_CDR (er); | |
175 | er = SCM_CAR (er); | |
176 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
177 | er = SCM_CDR (er); | |
178 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
179 | return SCM_CDRLOC (er); |
180 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
181 | } |
182 | #endif | |
183 | ||
f8769b1d MV |
184 | #ifdef USE_THREADS |
185 | ||
186 | /* The Lookup Car Race | |
187 | - by Eva Luator | |
188 | ||
189 | Memoization of variables and special forms is done while executing | |
190 | the code for the first time. As long as there is only one thread | |
191 | everything is fine, but as soon as two threads execute the same | |
192 | code concurrently `for the first time' they can come into conflict. | |
193 | ||
194 | This memoization includes rewriting variable references into more | |
195 | efficient forms and expanding macros. Furthermore, macro expansion | |
196 | includes `compiling' special forms like `let', `cond', etc. into | |
197 | tree-code instructions. | |
198 | ||
199 | There shouldn't normally be a problem with memoizing local and | |
200 | global variable references (into ilocs and glocs), because all | |
201 | threads will mutate the code in *exactly* the same way and (if I | |
202 | read the C code correctly) it is not possible to observe a half-way | |
203 | mutated cons cell. The lookup procedure can handle this | |
204 | transparently without any critical sections. | |
205 | ||
206 | It is different with macro expansion, because macro expansion | |
207 | happens outside of the lookup procedure and can't be | |
208 | undone. Therefore it can't cope with it. It has to indicate | |
209 | failure when it detects a lost race and hope that the caller can | |
210 | handle it. Luckily, it turns out that this is the case. | |
211 | ||
212 | An example to illustrate this: Suppose that the follwing form will | |
213 | be memoized concurrently by two threads | |
214 | ||
215 | (let ((x 12)) x) | |
216 | ||
217 | Let's first examine the lookup of X in the body. The first thread | |
218 | decides that it has to find the symbol "x" in the environment and | |
219 | starts to scan it. Then the other thread takes over and actually | |
220 | overtakes the first. It looks up "x" and substitutes an | |
221 | appropriate iloc for it. Now the first thread continues and | |
222 | completes its lookup. It comes to exactly the same conclusions as | |
223 | the second one and could - without much ado - just overwrite the | |
224 | iloc with the same iloc. | |
225 | ||
226 | But let's see what will happen when the race occurs while looking | |
227 | up the symbol "let" at the start of the form. It could happen that | |
228 | the second thread interrupts the lookup of the first thread and not | |
229 | only substitutes a gloc for it but goes right ahead and replaces it | |
230 | with the compiled form (#@let* (x 12) x). Now, when the first | |
231 | thread completes its lookup, it would replace the #@let* with a | |
232 | gloc pointing to the "let" binding, effectively reverting the form | |
233 | to (let (x 12) x). This is wrong. It has to detect that it has | |
234 | lost the race and the evaluator has to reconsider the changed form | |
235 | completely. | |
236 | ||
237 | This race condition could be resolved with some kind of traffic | |
238 | light (like mutexes) around scm_lookupcar, but I think that it is | |
239 | best to avoid them in this case. They would serialize memoization | |
240 | completely and because lookup involves calling arbitrary Scheme | |
241 | code (via the lookup-thunk), threads could be blocked for an | |
242 | arbitrary amount of time or even deadlock. But with the current | |
243 | solution a lot of unnecessary work is potentially done. */ | |
244 | ||
245 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
246 | return NULL to indicate a failed lookup due to some race conditions | |
247 | between threads. This only happens when VLOC is the first cell of | |
248 | a special form that will eventually be memoized (like `let', etc.) | |
249 | In that case the whole lookup is bogus and the caller has to | |
250 | reconsider the complete special form. | |
251 | ||
252 | SCM_LOOKUPCAR is still there, of course. It just calls | |
253 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
254 | should only be called when it is known that VLOC is not the first | |
255 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
256 | for NULL. I think I've found the only place where this applies. */ | |
257 | ||
258 | #endif /* USE_THREADS */ | |
1cc91f1b | 259 | |
0f2d19dd | 260 | SCM * |
f8769b1d | 261 | scm_lookupcar1 (vloc, genv) |
0f2d19dd JB |
262 | SCM vloc; |
263 | SCM genv; | |
0f2d19dd JB |
264 | { |
265 | SCM env = genv; | |
e3173f93 JB |
266 | register SCM *al, fl, var = SCM_CAR (vloc); |
267 | #ifdef USE_THREADS | |
268 | register SCM var2 = var; | |
269 | #endif | |
0f2d19dd JB |
270 | #ifdef MEMOIZE_LOCALS |
271 | register SCM iloc = SCM_ILOC00; | |
272 | #endif | |
273 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
274 | { | |
275 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
276 | break; | |
a23afe53 | 277 | al = SCM_CARLOC (env); |
0f2d19dd JB |
278 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
279 | { | |
280 | if (SCM_NCONSP (fl)) | |
281 | if (fl == var) | |
282 | { | |
283 | #ifdef MEMOIZE_LOCALS | |
f8769b1d MV |
284 | #ifdef USE_THREADS |
285 | if (SCM_CAR (vloc) != var) | |
286 | goto race; | |
287 | #endif | |
a23afe53 | 288 | SCM_SETCAR (vloc, iloc + SCM_ICDR); |
0f2d19dd | 289 | #endif |
a23afe53 | 290 | return SCM_CDRLOC (*al); |
0f2d19dd JB |
291 | } |
292 | else | |
293 | break; | |
a23afe53 | 294 | al = SCM_CDRLOC (*al); |
0f2d19dd JB |
295 | if (SCM_CAR (fl) == var) |
296 | { | |
297 | #ifdef MEMOIZE_LOCALS | |
298 | #ifndef RECKLESS /* letrec inits to SCM_UNDEFINED */ | |
299 | if (SCM_UNBNDP (SCM_CAR (*al))) | |
300 | { | |
301 | env = SCM_EOL; | |
302 | goto errout; | |
303 | } | |
f8769b1d MV |
304 | #endif |
305 | #ifdef USE_THREADS | |
306 | if (SCM_CAR (vloc) != var) | |
307 | goto race; | |
0f2d19dd | 308 | #endif |
a23afe53 | 309 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 310 | #endif |
a23afe53 | 311 | return SCM_CARLOC (*al); |
0f2d19dd JB |
312 | } |
313 | #ifdef MEMOIZE_LOCALS | |
314 | iloc += SCM_IDINC; | |
315 | #endif | |
316 | } | |
317 | #ifdef MEMOIZE_LOCALS | |
318 | iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC); | |
319 | #endif | |
320 | } | |
321 | { | |
322 | SCM top_thunk, vcell; | |
323 | if (SCM_NIMP(env)) | |
324 | { | |
325 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
326 | env = SCM_CDR (env); | |
327 | } | |
328 | else | |
329 | top_thunk = SCM_BOOL_F; | |
330 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
331 | if (vcell == SCM_BOOL_F) | |
332 | goto errout; | |
333 | else | |
334 | var = vcell; | |
335 | } | |
336 | #ifndef RECKLESS | |
337 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) | |
338 | { | |
339 | var = SCM_CAR (var); | |
340 | errout: | |
f5bf2977 | 341 | /* scm_everr (vloc, genv,...) */ |
523f5266 GH |
342 | scm_misc_error (NULL, |
343 | SCM_NULLP (env) | |
344 | ? "Unbound variable: %S" | |
345 | : "Damaged environment: %S", | |
346 | scm_listify (var, SCM_UNDEFINED)); | |
0f2d19dd JB |
347 | } |
348 | #endif | |
f8769b1d MV |
349 | #ifdef USE_THREADS |
350 | if (SCM_CAR (vloc) != var2) | |
351 | { | |
352 | /* Some other thread has changed the very cell we are working | |
353 | on. In effect, it must have done our job or messed it up | |
354 | completely. */ | |
355 | race: | |
356 | var = SCM_CAR (vloc); | |
357 | if ((var & 7) == 1) | |
358 | return SCM_GLOC_VAL_LOC (var); | |
359 | #ifdef MEMOIZE_LOCALS | |
360 | if ((var & 127) == (127 & SCM_ILOC00)) | |
361 | return scm_ilookup (var, genv); | |
362 | #endif | |
363 | /* We can't cope with anything else than glocs and ilocs. When | |
364 | a special form has been memoized (i.e. `let' into `#@let') we | |
365 | return NULL and expect the calling function to do the right | |
366 | thing. For the evaluator, this means going back and redoing | |
367 | the dispatch on the car of the form. */ | |
368 | return NULL; | |
369 | } | |
370 | #endif /* USE_THREADS */ | |
371 | ||
a23afe53 | 372 | SCM_SETCAR (vloc, var + 1); |
0f2d19dd | 373 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 374 | * but syntax or something.... */ |
a23afe53 | 375 | return SCM_CDRLOC (var); |
0f2d19dd JB |
376 | } |
377 | ||
f8769b1d MV |
378 | #ifdef USE_THREADS |
379 | SCM * | |
380 | scm_lookupcar (vloc, genv) | |
381 | SCM vloc; | |
382 | SCM genv; | |
383 | { | |
384 | SCM *loc = scm_lookupcar1 (vloc, genv); | |
385 | if (loc == NULL) | |
386 | abort (); | |
387 | return loc; | |
388 | } | |
389 | #else /* not USE_THREADS */ | |
390 | #define scm_lookupcar scm_lookupcar1 | |
391 | #endif | |
392 | ||
0f2d19dd | 393 | #define unmemocar scm_unmemocar |
1cc91f1b | 394 | |
0f2d19dd JB |
395 | SCM |
396 | scm_unmemocar (form, env) | |
397 | SCM form; | |
398 | SCM env; | |
0f2d19dd | 399 | { |
6dbd0af5 | 400 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 401 | register int ir; |
6dbd0af5 | 402 | #endif |
0f2d19dd JB |
403 | SCM c; |
404 | ||
405 | if (SCM_IMP (form)) | |
406 | return form; | |
407 | c = SCM_CAR (form); | |
408 | if (1 == (c & 7)) | |
a23afe53 | 409 | SCM_SETCAR (form, SCM_CAR (c - 1)); |
0f2d19dd | 410 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 411 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
412 | else if (SCM_ILOCP (c)) |
413 | { | |
414 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
415 | env = SCM_CDR (env); | |
416 | env = SCM_CAR (SCM_CAR (env)); | |
417 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
418 | env = SCM_CDR (env); | |
a23afe53 | 419 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 420 | } |
6dbd0af5 | 421 | #endif |
0f2d19dd JB |
422 | #endif |
423 | return form; | |
424 | } | |
425 | ||
1cc91f1b | 426 | |
0f2d19dd JB |
427 | SCM |
428 | scm_eval_car (pair, env) | |
429 | SCM pair; | |
430 | SCM env; | |
0f2d19dd | 431 | { |
6dbd0af5 | 432 | return XEVALCAR (pair, env); |
0f2d19dd JB |
433 | } |
434 | ||
435 | \f | |
436 | /* | |
437 | * The following rewrite expressions and | |
438 | * some memoized forms have different syntax | |
439 | */ | |
440 | ||
441 | static char s_expression[] = "missing or extra expression"; | |
442 | static char s_test[] = "bad test"; | |
443 | static char s_body[] = "bad body"; | |
444 | static char s_bindings[] = "bad bindings"; | |
445 | static char s_variable[] = "bad variable"; | |
446 | static char s_clauses[] = "bad or missing clauses"; | |
447 | static char s_formals[] = "bad formals"; | |
448 | #define ASSYNT(_cond, _arg, _pos, _subr) if(!(_cond))scm_wta(_arg, (char *)_pos, _subr); | |
449 | ||
450 | SCM scm_i_dot, scm_i_quote, scm_i_quasiquote, scm_i_lambda, scm_i_let, | |
451 | scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply; | |
6dbd0af5 MD |
452 | SCM scm_i_define, scm_i_and, scm_i_begin, scm_i_case, scm_i_cond, |
453 | scm_i_do, scm_i_if, scm_i_let, scm_i_letrec, scm_i_letstar, | |
454 | scm_i_or, scm_i_set, scm_i_atapply, scm_i_atcall_cc; | |
0f2d19dd JB |
455 | static char s_quasiquote[] = "quasiquote"; |
456 | static char s_delay[] = "delay"; | |
6dbd0af5 MD |
457 | static char s_undefine[] = "undefine"; |
458 | #ifdef DEBUG_EXTENSIONS | |
459 | SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame; | |
460 | SCM scm_i_trace; | |
461 | #endif | |
0f2d19dd JB |
462 | |
463 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
464 | ||
465 | ||
1cc91f1b JB |
466 | |
467 | static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, char *what)); | |
468 | ||
0f2d19dd JB |
469 | static void |
470 | bodycheck (xorig, bodyloc, what) | |
471 | SCM xorig; | |
472 | SCM *bodyloc; | |
473 | char *what; | |
0f2d19dd JB |
474 | { |
475 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, s_expression); | |
476 | } | |
477 | ||
478 | ||
1cc91f1b | 479 | |
0f2d19dd JB |
480 | SCM |
481 | scm_m_quote (xorig, env) | |
482 | SCM xorig; | |
483 | SCM env; | |
0f2d19dd JB |
484 | { |
485 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "quote"); | |
486 | return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig)); | |
487 | } | |
488 | ||
489 | ||
1cc91f1b | 490 | |
0f2d19dd JB |
491 | SCM |
492 | scm_m_begin (xorig, env) | |
493 | SCM xorig; | |
494 | SCM env; | |
0f2d19dd JB |
495 | { |
496 | ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, xorig, s_expression, "begin"); | |
497 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); | |
498 | } | |
499 | ||
500 | ||
1cc91f1b | 501 | |
0f2d19dd JB |
502 | SCM |
503 | scm_m_if (xorig, env) | |
504 | SCM xorig; | |
505 | SCM env; | |
0f2d19dd JB |
506 | { |
507 | int len = scm_ilength (SCM_CDR (xorig)); | |
508 | ASSYNT (len >= 2 && len <= 3, xorig, s_expression, "if"); | |
509 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); | |
510 | } | |
511 | ||
512 | ||
1cc91f1b | 513 | |
0f2d19dd JB |
514 | SCM |
515 | scm_m_set (xorig, env) | |
516 | SCM xorig; | |
517 | SCM env; | |
0f2d19dd | 518 | { |
6dbd0af5 MD |
519 | SCM x = SCM_CDR (xorig); |
520 | ASSYNT (2 == scm_ilength (x), xorig, s_expression, "set!"); | |
521 | ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)), | |
522 | xorig, s_variable, "set!"); | |
0f2d19dd JB |
523 | return scm_cons (SCM_IM_SET, x); |
524 | } | |
525 | ||
526 | ||
527 | #if 0 | |
1cc91f1b | 528 | |
0f2d19dd JB |
529 | SCM |
530 | scm_m_vref (xorig, env) | |
531 | SCM xorig; | |
532 | SCM env; | |
0f2d19dd JB |
533 | { |
534 | SCM x = SCM_CDR (xorig); | |
535 | ASSYNT (1 == scm_ilength (x), xorig, s_expression, s_vref); | |
536 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) | |
537 | { | |
f5bf2977 | 538 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 GH |
539 | scm_misc_error (NULL, |
540 | "Bad variable: %S", | |
541 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); | |
0f2d19dd JB |
542 | } |
543 | ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), | |
544 | xorig, s_variable, s_vref); | |
545 | return | |
546 | return scm_cons (IM_VREF, x); | |
547 | } | |
548 | ||
549 | ||
1cc91f1b | 550 | |
0f2d19dd JB |
551 | SCM |
552 | scm_m_vset (xorig, env) | |
553 | SCM xorig; | |
554 | SCM env; | |
0f2d19dd JB |
555 | { |
556 | SCM x = SCM_CDR (xorig); | |
557 | ASSYNT (3 == scm_ilength (x), xorig, s_expression, s_vset); | |
558 | ASSYNT (( DEFSCM_VARIABLEP (SCM_CAR (x)) | |
559 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
560 | xorig, s_variable, s_vset); | |
561 | return scm_cons (IM_VSET, x); | |
562 | } | |
563 | #endif | |
564 | ||
565 | ||
1cc91f1b | 566 | |
0f2d19dd JB |
567 | SCM |
568 | scm_m_and (xorig, env) | |
569 | SCM xorig; | |
570 | SCM env; | |
0f2d19dd JB |
571 | { |
572 | int len = scm_ilength (SCM_CDR (xorig)); | |
573 | ASSYNT (len >= 0, xorig, s_test, "and"); | |
574 | if (len >= 1) | |
575 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); | |
576 | else | |
577 | return SCM_BOOL_T; | |
578 | } | |
579 | ||
580 | ||
1cc91f1b | 581 | |
0f2d19dd JB |
582 | SCM |
583 | scm_m_or (xorig, env) | |
584 | SCM xorig; | |
585 | SCM env; | |
0f2d19dd JB |
586 | { |
587 | int len = scm_ilength (SCM_CDR (xorig)); | |
588 | ASSYNT (len >= 0, xorig, s_test, "or"); | |
589 | if (len >= 1) | |
590 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); | |
591 | else | |
592 | return SCM_BOOL_F; | |
593 | } | |
594 | ||
595 | ||
1cc91f1b | 596 | |
0f2d19dd JB |
597 | SCM |
598 | scm_m_case (xorig, env) | |
599 | SCM xorig; | |
600 | SCM env; | |
0f2d19dd JB |
601 | { |
602 | SCM proc, x = SCM_CDR (xorig); | |
603 | ASSYNT (scm_ilength (x) >= 2, xorig, s_clauses, "case"); | |
604 | while (SCM_NIMP (x = SCM_CDR (x))) | |
605 | { | |
606 | proc = SCM_CAR (x); | |
607 | ASSYNT (scm_ilength (proc) >= 2, xorig, s_clauses, "case"); | |
608 | ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 || scm_i_else == SCM_CAR (proc), | |
609 | xorig, s_clauses, "case"); | |
610 | } | |
611 | return scm_cons (SCM_IM_CASE, SCM_CDR (xorig)); | |
612 | } | |
613 | ||
614 | ||
1cc91f1b | 615 | |
0f2d19dd JB |
616 | SCM |
617 | scm_m_cond (xorig, env) | |
618 | SCM xorig; | |
619 | SCM env; | |
0f2d19dd JB |
620 | { |
621 | SCM arg1, x = SCM_CDR (xorig); | |
622 | int len = scm_ilength (x); | |
623 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
624 | while (SCM_NIMP (x)) | |
625 | { | |
626 | arg1 = SCM_CAR (x); | |
627 | len = scm_ilength (arg1); | |
628 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
629 | if (scm_i_else == SCM_CAR (arg1)) | |
630 | { | |
631 | ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, xorig, "bad ELSE clause", "cond"); | |
a23afe53 | 632 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd JB |
633 | } |
634 | if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1))) | |
635 | ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), | |
636 | xorig, "bad recipient", "cond"); | |
637 | x = SCM_CDR (x); | |
638 | } | |
639 | return scm_cons (SCM_IM_COND, SCM_CDR (xorig)); | |
640 | } | |
641 | ||
642 | ||
1cc91f1b | 643 | |
0f2d19dd JB |
644 | SCM |
645 | scm_m_lambda (xorig, env) | |
646 | SCM xorig; | |
647 | SCM env; | |
0f2d19dd JB |
648 | { |
649 | SCM proc, x = SCM_CDR (xorig); | |
650 | if (scm_ilength (x) < 2) | |
651 | goto badforms; | |
652 | proc = SCM_CAR (x); | |
653 | if SCM_NULLP | |
654 | (proc) goto memlambda; | |
655 | if SCM_IMP | |
656 | (proc) goto badforms; | |
657 | if SCM_SYMBOLP | |
658 | (proc) goto memlambda; | |
659 | if SCM_NCONSP | |
660 | (proc) goto badforms; | |
661 | while SCM_NIMP | |
662 | (proc) | |
663 | { | |
664 | if SCM_NCONSP | |
665 | (proc) | |
666 | if (!SCM_SYMBOLP (proc)) | |
667 | goto badforms; | |
668 | else | |
669 | goto memlambda; | |
670 | if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc)))) | |
671 | goto badforms; | |
672 | proc = SCM_CDR (proc); | |
673 | } | |
674 | if SCM_NNULLP | |
675 | (proc) | |
676 | badforms:scm_wta (xorig, s_formals, "lambda"); | |
677 | memlambda: | |
a23afe53 | 678 | bodycheck (xorig, SCM_CDRLOC (x), "lambda"); |
0f2d19dd JB |
679 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); |
680 | } | |
681 | ||
682 | ||
1cc91f1b | 683 | |
0f2d19dd JB |
684 | SCM |
685 | scm_m_letstar (xorig, env) | |
686 | SCM xorig; | |
687 | SCM env; | |
0f2d19dd JB |
688 | { |
689 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
690 | int len = scm_ilength (x); | |
691 | ASSYNT (len >= 2, xorig, s_body, "let*"); | |
692 | proc = SCM_CAR (x); | |
693 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let*"); | |
6dbd0af5 | 694 | while SCM_NIMP (proc) |
0f2d19dd JB |
695 | { |
696 | arg1 = SCM_CAR (proc); | |
697 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let*"); | |
698 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let*"); | |
699 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 700 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
701 | proc = SCM_CDR (proc); |
702 | } | |
703 | x = scm_cons (vars, SCM_CDR (x)); | |
a23afe53 | 704 | bodycheck (xorig, SCM_CDRLOC (x), "let*"); |
0f2d19dd JB |
705 | return scm_cons (SCM_IM_LETSTAR, x); |
706 | } | |
707 | ||
708 | /* DO gets the most radically altered syntax | |
709 | (do ((<var1> <init1> <step1>) | |
710 | (<var2> <init2>) | |
711 | ... ) | |
712 | (<test> <return>) | |
713 | <body>) | |
714 | ;; becomes | |
715 | (do_mem (varn ... var2 var1) | |
716 | (<init1> <init2> ... <initn>) | |
717 | (<test> <return>) | |
718 | (<body>) | |
719 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
720 | */ | |
721 | ||
722 | ||
1cc91f1b | 723 | |
0f2d19dd JB |
724 | SCM |
725 | scm_m_do (xorig, env) | |
726 | SCM xorig; | |
727 | SCM env; | |
0f2d19dd JB |
728 | { |
729 | SCM x = SCM_CDR (xorig), arg1, proc; | |
730 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
731 | SCM *initloc = &inits, *steploc = &steps; | |
732 | int len = scm_ilength (x); | |
733 | ASSYNT (len >= 2, xorig, s_test, "do"); | |
734 | proc = SCM_CAR (x); | |
735 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "do"); | |
736 | while SCM_NIMP | |
737 | (proc) | |
738 | { | |
739 | arg1 = SCM_CAR (proc); | |
740 | len = scm_ilength (arg1); | |
741 | ASSYNT (2 == len || 3 == len, xorig, s_bindings, "do"); | |
742 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "do"); | |
743 | /* vars reversed here, inits and steps reversed at evaluation */ | |
744 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
745 | arg1 = SCM_CDR (arg1); | |
746 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 747 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
748 | arg1 = SCM_CDR (arg1); |
749 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 750 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
751 | proc = SCM_CDR (proc); |
752 | } | |
753 | x = SCM_CDR (x); | |
754 | ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, s_test, "do"); | |
755 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); | |
756 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 757 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
0f2d19dd JB |
758 | return scm_cons (SCM_IM_DO, x); |
759 | } | |
760 | ||
6dbd0af5 MD |
761 | /* evalcar is small version of inline EVALCAR when we don't care about |
762 | * speed | |
763 | */ | |
764 | #define evalcar scm_eval_car | |
0f2d19dd | 765 | |
1cc91f1b JB |
766 | |
767 | static SCM iqq SCM_P ((SCM form, SCM env, int depth)); | |
768 | ||
0f2d19dd JB |
769 | static SCM |
770 | iqq (form, env, depth) | |
771 | SCM form; | |
772 | SCM env; | |
773 | int depth; | |
0f2d19dd JB |
774 | { |
775 | SCM tmp; | |
776 | int edepth = depth; | |
777 | if SCM_IMP | |
778 | (form) return form; | |
779 | if (SCM_VECTORP (form)) | |
780 | { | |
781 | long i = SCM_LENGTH (form); | |
782 | SCM *data = SCM_VELTS (form); | |
783 | tmp = SCM_EOL; | |
784 | for (; --i >= 0;) | |
785 | tmp = scm_cons (data[i], tmp); | |
786 | return scm_vector (iqq (tmp, env, depth)); | |
787 | } | |
788 | if SCM_NCONSP | |
789 | (form) return form; | |
790 | tmp = SCM_CAR (form); | |
791 | if (scm_i_quasiquote == tmp) | |
792 | { | |
793 | depth++; | |
794 | goto label; | |
795 | } | |
796 | if (scm_i_unquote == tmp) | |
797 | { | |
798 | --depth; | |
799 | label: | |
800 | form = SCM_CDR (form); | |
0f2d19dd JB |
801 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
802 | form, SCM_ARG1, s_quasiquote); | |
803 | if (0 == depth) | |
804 | return evalcar (form, env); | |
805 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
806 | } | |
807 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
808 | { | |
809 | tmp = SCM_CDR (tmp); | |
810 | if (0 == --edepth) | |
811 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
812 | } | |
813 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
814 | } | |
815 | ||
816 | /* Here are acros which return values rather than code. */ | |
817 | ||
1cc91f1b | 818 | |
0f2d19dd JB |
819 | SCM |
820 | scm_m_quasiquote (xorig, env) | |
821 | SCM xorig; | |
822 | SCM env; | |
0f2d19dd JB |
823 | { |
824 | SCM x = SCM_CDR (xorig); | |
825 | ASSYNT (scm_ilength (x) == 1, xorig, s_expression, s_quasiquote); | |
826 | return iqq (SCM_CAR (x), env, 1); | |
827 | } | |
828 | ||
1cc91f1b | 829 | |
0f2d19dd JB |
830 | SCM |
831 | scm_m_delay (xorig, env) | |
832 | SCM xorig; | |
833 | SCM env; | |
0f2d19dd JB |
834 | { |
835 | ASSYNT (scm_ilength (xorig) == 2, xorig, s_expression, s_delay); | |
836 | xorig = SCM_CDR (xorig); | |
837 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
838 | env)); | |
839 | } | |
840 | ||
1cc91f1b JB |
841 | |
842 | static SCM env_top_level SCM_P ((SCM env)); | |
843 | ||
0f2d19dd JB |
844 | static SCM |
845 | env_top_level (env) | |
846 | SCM env; | |
0f2d19dd JB |
847 | { |
848 | while (SCM_NIMP(env)) | |
849 | { | |
850 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR(env))) | |
851 | return SCM_CAR(env); | |
852 | env = SCM_CDR (env); | |
853 | } | |
854 | return SCM_BOOL_F; | |
855 | } | |
856 | ||
1cc91f1b | 857 | |
0f2d19dd JB |
858 | SCM |
859 | scm_m_define (x, env) | |
860 | SCM x; | |
861 | SCM env; | |
0f2d19dd JB |
862 | { |
863 | SCM proc, arg1 = x; | |
864 | x = SCM_CDR (x); | |
865 | /* ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ | |
866 | ASSYNT (scm_ilength (x) >= 2, arg1, s_expression, "define"); | |
867 | proc = SCM_CAR (x); | |
868 | x = SCM_CDR (x); | |
869 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
870 | { /* nested define syntax */ | |
871 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
872 | proc = SCM_CAR (proc); | |
873 | } | |
874 | ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), arg1, s_variable, "define"); | |
875 | ASSYNT (1 == scm_ilength (x), arg1, s_expression, "define"); | |
876 | if (SCM_TOP_LEVEL (env)) | |
877 | { | |
878 | x = evalcar (x, env); | |
6dbd0af5 | 879 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
880 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
881 | { | |
882 | arg1 = x; | |
883 | proc: | |
884 | if (SCM_CLOSUREP (arg1) | |
885 | /* Only the first definition determines the name. */ | |
886 | && scm_procedure_property (arg1, scm_i_name) == SCM_BOOL_F) | |
887 | scm_set_procedure_property_x (arg1, scm_i_name, proc); | |
888 | else if (SCM_TYP16 (arg1) == scm_tc16_macro | |
889 | && SCM_CDR (arg1) != arg1) | |
890 | { | |
891 | arg1 = SCM_CDR (arg1); | |
892 | goto proc; | |
893 | } | |
894 | } | |
6dbd0af5 | 895 | #endif |
0f2d19dd JB |
896 | arg1 = scm_sym2vcell (proc, env_top_level (env), SCM_BOOL_T); |
897 | #if 0 | |
898 | #ifndef RECKLESS | |
899 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) | |
900 | && (SCM_CDR (arg1) != x)) | |
901 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
902 | else | |
903 | #endif | |
904 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
905 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 906 | #endif |
a23afe53 | 907 | SCM_SETCDR (arg1, x); |
0f2d19dd JB |
908 | #ifdef SICP |
909 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
910 | #else | |
911 | return SCM_UNSPECIFIED; | |
912 | #endif | |
913 | } | |
914 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
915 | } | |
6dbd0af5 MD |
916 | |
917 | SCM | |
918 | scm_m_undefine (x, env) | |
919 | SCM x, env; | |
920 | { | |
921 | SCM arg1 = x; | |
922 | x = SCM_CDR (x); | |
923 | ASSYNT (SCM_TOP_LEVEL (env), arg1, "bad placement ", s_undefine); | |
924 | ASSYNT (SCM_NIMP (x) && SCM_CONSP (x) && SCM_CDR (x) == SCM_EOL, | |
925 | arg1, s_expression, s_undefine); | |
926 | x = SCM_CAR (x); | |
927 | ASSYNT (SCM_NIMP (x) && SCM_SYMBOLP (x), arg1, s_variable, s_undefine); | |
928 | arg1 = scm_sym2vcell (x, env_top_level (env), SCM_BOOL_F); | |
929 | ASSYNT (SCM_NFALSEP (arg1) && !SCM_UNBNDP (SCM_CDR (arg1)), | |
930 | x, "variable already unbound ", s_undefine); | |
931 | #if 0 | |
932 | #ifndef RECKLESS | |
933 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == x)) | |
934 | scm_warn ("undefining built-in ", SCM_CHARS (x)); | |
935 | else | |
936 | #endif | |
937 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
938 | scm_warn ("redefining ", SCM_CHARS (x)); | |
939 | #endif | |
a23afe53 | 940 | SCM_SETCDR (arg1, SCM_UNDEFINED); |
6dbd0af5 MD |
941 | #ifdef SICP |
942 | return SCM_CAR (arg1); | |
943 | #else | |
944 | return SCM_UNSPECIFIED; | |
945 | #endif | |
946 | } | |
947 | ||
0f2d19dd JB |
948 | /* end of acros */ |
949 | ||
1cc91f1b | 950 | |
0f2d19dd JB |
951 | SCM |
952 | scm_m_letrec (xorig, env) | |
953 | SCM xorig; | |
954 | SCM env; | |
0f2d19dd JB |
955 | { |
956 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
957 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
958 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
959 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
960 | ||
961 | ASRTSYNTAX (scm_ilength (x) >= 2, s_body); | |
962 | proc = SCM_CAR (x); | |
963 | if SCM_NULLP | |
964 | (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
965 | ASRTSYNTAX (scm_ilength (proc) >= 1, s_bindings); | |
966 | do | |
967 | { | |
968 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
969 | arg1 = SCM_CAR (proc); | |
970 | ASRTSYNTAX (2 == scm_ilength (arg1), s_bindings); | |
971 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), s_variable); | |
972 | vars = scm_cons (SCM_CAR (arg1), vars); | |
973 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 974 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
975 | } |
976 | while SCM_NIMP | |
977 | (proc = SCM_CDR (proc)); | |
978 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); | |
a23afe53 | 979 | bodycheck (xorig, SCM_CDRLOC (SCM_CDR (cdrx)), what); |
0f2d19dd JB |
980 | return scm_cons (SCM_IM_LETREC, cdrx); |
981 | } | |
982 | ||
1cc91f1b | 983 | |
0f2d19dd JB |
984 | SCM |
985 | scm_m_let (xorig, env) | |
986 | SCM xorig; | |
987 | SCM env; | |
0f2d19dd JB |
988 | { |
989 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
990 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
991 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
992 | ||
993 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
994 | proc = SCM_CAR (x); | |
995 | if (SCM_NULLP (proc) | |
996 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
997 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
998 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
999 | ASSYNT (SCM_NIMP (proc), xorig, s_bindings, "let"); | |
1000 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ | |
1001 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
1002 | if (!SCM_SYMBOLP (proc)) | |
1003 | scm_wta (xorig, s_bindings, "let"); /* bad let */ | |
1004 | name = proc; /* named let, build equiv letrec */ | |
1005 | x = SCM_CDR (x); | |
1006 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
1007 | proc = SCM_CAR (x); /* bindings scm_list */ | |
1008 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let"); | |
1009 | while SCM_NIMP | |
1010 | (proc) | |
1011 | { /* vars and inits both in order */ | |
1012 | arg1 = SCM_CAR (proc); | |
1013 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let"); | |
1014 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let"); | |
1015 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); | |
a23afe53 | 1016 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 1017 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 1018 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
1019 | proc = SCM_CDR (proc); |
1020 | } | |
1021 | return | |
1022 | scm_m_letrec (scm_cons2 (scm_i_let, | |
1023 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
1024 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
1025 | env); | |
1026 | } | |
1027 | ||
1028 | ||
1cc91f1b | 1029 | |
0f2d19dd JB |
1030 | SCM |
1031 | scm_m_apply (xorig, env) | |
1032 | SCM xorig; | |
1033 | SCM env; | |
0f2d19dd JB |
1034 | { |
1035 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, xorig, s_expression, "@apply"); | |
1036 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); | |
1037 | } | |
1038 | ||
e2806c10 | 1039 | #define s_atcall_cc (SCM_ISYMCHARS(SCM_IM_CONT)+1) |
0f2d19dd | 1040 | |
1cc91f1b | 1041 | |
0f2d19dd JB |
1042 | SCM |
1043 | scm_m_cont (xorig, env) | |
1044 | SCM xorig; | |
1045 | SCM env; | |
0f2d19dd JB |
1046 | { |
1047 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "@call-with-current-continuation"); | |
1048 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); | |
1049 | } | |
1050 | ||
6dbd0af5 MD |
1051 | /* scm_unmemocopy takes a memoized expression together with its |
1052 | * environment and rewrites it to its original form. Thus, it is the | |
1053 | * inversion of the rewrite rules above. The procedure is not | |
1054 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1055 | * code of a closure, in scm_procedure_source, in display_frame when |
1056 | * generating the source for a stackframe in a backtrace, and in | |
1057 | * display_expression. | |
6dbd0af5 MD |
1058 | */ |
1059 | ||
1cc91f1b JB |
1060 | static SCM unmemocopy SCM_P ((SCM x, SCM env)); |
1061 | ||
6dbd0af5 MD |
1062 | static SCM |
1063 | unmemocopy (x, env) | |
1064 | SCM x; | |
1065 | SCM env; | |
6dbd0af5 MD |
1066 | { |
1067 | SCM ls, z; | |
1068 | #ifdef DEBUG_EXTENSIONS | |
1069 | SCM p; | |
1070 | #endif | |
1071 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1072 | return x; | |
1073 | #ifdef DEBUG_EXTENSIONS | |
1074 | p = scm_whash_lookup (scm_source_whash, x); | |
1075 | #endif | |
1076 | switch (SCM_TYP7 (x)) | |
1077 | { | |
1078 | case (127 & SCM_IM_AND): | |
1079 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
1080 | break; | |
1081 | case (127 & SCM_IM_BEGIN): | |
1082 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
1083 | break; | |
1084 | case (127 & SCM_IM_CASE): | |
1085 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
1086 | break; | |
1087 | case (127 & SCM_IM_COND): | |
1088 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
1089 | break; | |
1090 | case (127 & SCM_IM_DO): | |
1091 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
1092 | goto transform; | |
1093 | case (127 & SCM_IM_IF): | |
1094 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
1095 | break; | |
1096 | case (127 & SCM_IM_LET): | |
1097 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
1098 | goto transform; | |
1099 | case (127 & SCM_IM_LETREC): | |
1100 | { | |
1101 | SCM f, v, e, s; | |
1102 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
1103 | transform: | |
1104 | x = SCM_CDR (x); | |
1105 | f = v = SCM_CAR (x); | |
1106 | x = SCM_CDR (x); | |
e2806c10 | 1107 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
1108 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
1109 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
1110 | env = z; | |
1111 | s = SCM_CAR (ls) == scm_i_do | |
1112 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
1113 | : f; | |
1114 | z = SCM_EOL; | |
1115 | do | |
1116 | { | |
1117 | z = scm_acons (SCM_CAR (v), | |
1118 | scm_cons (SCM_CAR (e), | |
1119 | SCM_CAR (s) == SCM_CAR (v) | |
1120 | ? SCM_EOL | |
1121 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1122 | z); | |
1123 | v = SCM_CDR (v); | |
1124 | e = SCM_CDR (e); | |
1125 | s = SCM_CDR (s); | |
1126 | } | |
1127 | while SCM_NIMP (v); | |
a23afe53 MD |
1128 | z = scm_cons (z, SCM_UNSPECIFIED); |
1129 | SCM_SETCDR (ls, z); | |
6dbd0af5 MD |
1130 | if (SCM_CAR (ls) == scm_i_do) |
1131 | { | |
1132 | x = SCM_CDR (x); | |
a23afe53 | 1133 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1134 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1135 | z = SCM_CDR (z); |
1136 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
6dbd0af5 MD |
1137 | } |
1138 | break; | |
1139 | } | |
1140 | case (127 & SCM_IM_LETSTAR): | |
1141 | { | |
1142 | SCM b, y; | |
1143 | x = SCM_CDR (x); | |
1144 | b = SCM_CAR (x); | |
1145 | y = SCM_EOL; | |
1146 | if SCM_IMP (b) | |
1147 | { | |
e2806c10 | 1148 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1149 | goto letstar; |
1150 | } | |
1151 | y = z = scm_acons (SCM_CAR (b), | |
1152 | unmemocar ( | |
1153 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1154 | SCM_UNSPECIFIED); | |
e2806c10 | 1155 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1156 | b = SCM_CDR (SCM_CDR (b)); |
1157 | if (SCM_IMP (b)) | |
1158 | { | |
1159 | SCM_SETCDR (y, SCM_EOL); | |
1160 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1161 | break; | |
1162 | } | |
1163 | do | |
1164 | { | |
a23afe53 MD |
1165 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1166 | unmemocar ( | |
6dbd0af5 | 1167 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1168 | SCM_UNSPECIFIED)); |
1169 | z = SCM_CDR (z); | |
e2806c10 | 1170 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1171 | b = SCM_CDR (SCM_CDR (b)); |
1172 | } | |
1173 | while SCM_NIMP (b); | |
a23afe53 | 1174 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 MD |
1175 | letstar: |
1176 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1177 | break; | |
1178 | } | |
1179 | case (127 & SCM_IM_OR): | |
1180 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1181 | break; | |
1182 | case (127 & SCM_IM_LAMBDA): | |
1183 | x = SCM_CDR (x); | |
1184 | ls = scm_cons (scm_i_lambda, | |
1185 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1186 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1187 | break; |
1188 | case (127 & SCM_IM_QUOTE): | |
1189 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1190 | break; | |
1191 | case (127 & SCM_IM_SET): | |
1192 | ls = z = scm_cons (scm_i_set, SCM_UNSPECIFIED); | |
1193 | break; | |
1194 | case (127 & SCM_IM_DEFINE): | |
1195 | { | |
1196 | SCM n; | |
1197 | x = SCM_CDR (x); | |
1198 | ls = scm_cons (scm_i_define, | |
1199 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1200 | if (SCM_NNULLP (env)) | |
a23afe53 | 1201 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1202 | break; |
1203 | } | |
1204 | case (127 & SCM_MAKISYM (0)): | |
1205 | z = SCM_CAR (x); | |
1206 | if (!SCM_ISYMP (z)) | |
1207 | goto unmemo; | |
1208 | switch SCM_ISYMNUM (z) | |
1209 | { | |
1210 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1211 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1212 | goto loop; | |
1213 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1214 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1215 | goto loop; | |
1216 | default: | |
fa888178 | 1217 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1218 | } |
1219 | unmemo: | |
1220 | default: | |
1221 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1222 | SCM_UNSPECIFIED), | |
1223 | env); | |
1224 | } | |
1225 | loop: | |
1226 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 MD |
1227 | { |
1228 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1229 | SCM_UNSPECIFIED), | |
1230 | env)); | |
1231 | z = SCM_CDR (z); | |
1232 | } | |
1233 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1234 | #ifdef DEBUG_EXTENSIONS |
1235 | if (SCM_NFALSEP (p)) | |
1236 | scm_whash_insert (scm_source_whash, ls, p); | |
1237 | #endif | |
1238 | return ls; | |
1239 | } | |
1240 | ||
1cc91f1b | 1241 | |
6dbd0af5 MD |
1242 | SCM |
1243 | scm_unmemocopy (x, env) | |
1244 | SCM x; | |
1245 | SCM env; | |
6dbd0af5 MD |
1246 | { |
1247 | if (SCM_NNULLP (env)) | |
1248 | /* Make a copy of the lowest frame to protect it from | |
1249 | modifications by SCM_IM_DEFINE */ | |
1250 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1251 | else | |
1252 | return unmemocopy (x, env); | |
1253 | } | |
1254 | ||
0f2d19dd | 1255 | #ifndef RECKLESS |
1cc91f1b | 1256 | |
0f2d19dd JB |
1257 | int |
1258 | scm_badargsp (formals, args) | |
1259 | SCM formals; | |
1260 | SCM args; | |
0f2d19dd JB |
1261 | { |
1262 | while SCM_NIMP | |
1263 | (formals) | |
1264 | { | |
1265 | if SCM_NCONSP | |
1266 | (formals) return 0; | |
1267 | if SCM_IMP | |
1268 | (args) return 1; | |
1269 | formals = SCM_CDR (formals); | |
1270 | args = SCM_CDR (args); | |
1271 | } | |
1272 | return SCM_NNULLP (args) ? 1 : 0; | |
1273 | } | |
1274 | #endif | |
1275 | ||
1276 | ||
1277 | \f | |
1278 | long scm_tc16_macro; | |
1279 | ||
1cc91f1b | 1280 | |
6dbd0af5 MD |
1281 | SCM |
1282 | scm_eval_args (l, env) | |
1283 | SCM l; | |
1284 | SCM env; | |
6dbd0af5 MD |
1285 | { |
1286 | SCM res = SCM_EOL, *lloc = &res; | |
1287 | while (SCM_NIMP (l)) | |
1288 | { | |
1289 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
a23afe53 | 1290 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1291 | l = SCM_CDR (l); |
1292 | } | |
1293 | return res; | |
1294 | } | |
c4ac4d88 JB |
1295 | |
1296 | ||
1297 | /* The SCM_CEVAL and SCM_APPLY functions use this function instead of | |
1298 | calling setjmp directly, to make sure that local variables don't | |
1299 | have their values clobbered by a longjmp. | |
1300 | ||
1301 | According to Harbison & Steele, "Automatic variables local to the | |
1302 | function containing setjmp are guaranteed to have their correct | |
1303 | value in ANSI C only if they have a volatile-qualified type or if | |
1304 | their values were not changed between the original call to setjmp | |
1305 | and the corresponding longjmp call." | |
1306 | ||
1307 | SCM_CEVAL and SCM_APPLY are too complex for me to see how to meet | |
1308 | the second condition, and making x and env volatile would be a | |
1309 | speed problem, so we'll just trivially meet the first, by having no | |
1310 | "automatic variables local to the function containing setjmp." */ | |
30000774 JB |
1311 | |
1312 | /* Actually, this entire approach is bogus, because setjmp ends up | |
1313 | capturing the stack frame of the wrapper function, which then | |
1314 | returns, rendering the jump buffer invalid. Duh. Gotta find a | |
1315 | better way... -JimB */ | |
c75e83b7 | 1316 | #define safe_setjmp(x) setjmp (x) |
c4ac4d88 | 1317 | static int |
c75e83b7 | 1318 | unsafe_setjmp (jmp_buf env) |
c4ac4d88 JB |
1319 | { |
1320 | /* I think ANSI requires us to write the function this way, instead | |
1321 | of just saying "return setjmp (env)". Maybe I'm being silly. | |
1322 | See Harbison & Steele, third edition, p. 353. */ | |
1323 | int val; | |
1324 | val = setjmp (env); | |
1325 | return val; | |
1326 | } | |
1327 | ||
1328 | ||
0f2d19dd JB |
1329 | #endif /* !DEVAL */ |
1330 | ||
6dbd0af5 MD |
1331 | |
1332 | /* SECTION: This code is specific for the debugging support. One | |
1333 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1334 | * defined. | |
1335 | */ | |
1336 | ||
1337 | #ifndef DEVAL | |
1338 | ||
1339 | #define SCM_APPLY scm_apply | |
1340 | #define PREP_APPLY(proc, args) | |
1341 | #define ENTER_APPLY | |
1342 | #define RETURN(x) return x; | |
b7ff98dd MD |
1343 | #ifdef STACK_CHECKING |
1344 | #ifndef NO_CEVAL_STACK_CHECKING | |
1345 | #define EVAL_STACK_CHECKING | |
1346 | #endif | |
6dbd0af5 MD |
1347 | #endif |
1348 | ||
1349 | #else /* !DEVAL */ | |
1350 | ||
0f2d19dd JB |
1351 | #undef SCM_CEVAL |
1352 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1353 | #undef SCM_APPLY | |
1354 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1355 | #undef PREP_APPLY |
1356 | #define PREP_APPLY(p, l) \ | |
1357 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1358 | #undef ENTER_APPLY | |
1359 | #define ENTER_APPLY \ | |
1360 | {\ | |
b7ff98dd | 1361 | SCM_SET_ARGSREADY (debug);\ |
6dbd0af5 | 1362 | if (CHECK_APPLY)\ |
b7ff98dd | 1363 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1364 | {\ |
b7ff98dd | 1365 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
c6a4fbce MD |
1366 | SCM_SET_TRACED_FRAME (debug); \ |
1367 | SCM_APPLY_FRAME_P = 0; \ | |
1368 | SCM_TRACE_P = 0; \ | |
1369 | SCM_RESET_DEBUG_MODE; \ | |
b7ff98dd | 1370 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1371 | {\ |
c0ab1b8d | 1372 | tmp = scm_make_debugobj (&debug);\ |
6dbd0af5 MD |
1373 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
1374 | }\ | |
1375 | else\ | |
1376 | {\ | |
1377 | scm_make_cont (&tmp);\ | |
c4ac4d88 | 1378 | if (!safe_setjmp (SCM_JMPBUF (tmp)))\ |
6dbd0af5 MD |
1379 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
1380 | }\ | |
1381 | }\ | |
1382 | } | |
0f2d19dd JB |
1383 | #undef RETURN |
1384 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1385 | #ifdef STACK_CHECKING |
1386 | #ifndef EVAL_STACK_CHECKING | |
1387 | #define EVAL_STACK_CHECKING | |
1388 | #endif | |
6dbd0af5 MD |
1389 | #endif |
1390 | ||
1391 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1392 | * *fixme*: Although efficiency is important here, this state variable | |
1393 | * should probably not be a global. It should be related to the | |
1394 | * current repl. | |
1395 | */ | |
1396 | ||
1cc91f1b JB |
1397 | |
1398 | SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env)); | |
0f2d19dd | 1399 | |
1646d37b | 1400 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1401 | * information stack frame. It is accessed very often from the |
1402 | * debugging evaluator, so it should probably not be indirectly | |
1403 | * addressed. Better to save and restore it from the current root at | |
1404 | * any stack swaps. | |
1405 | */ | |
1406 | ||
1646d37b MD |
1407 | #ifndef USE_THREADS |
1408 | scm_debug_frame *scm_last_debug_frame; | |
1409 | #endif | |
6dbd0af5 MD |
1410 | |
1411 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1412 | * stack frames at each real stack frame. | |
1413 | */ | |
1414 | ||
1415 | int scm_debug_eframe_size; | |
1416 | ||
b7ff98dd | 1417 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 MD |
1418 | |
1419 | scm_option scm_debug_opts[] = { | |
b7ff98dd MD |
1420 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1421 | "*Flyweight representation of the stack at traps." }, | |
1422 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1423 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1424 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1425 | "Record procedure names at definition." }, | |
1426 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1427 | "Display backtrace in anti-chronological order." }, | |
4e646a03 MD |
1428 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1429 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1430 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1431 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1432 | "Maximal number of stored backtrace frames." }, | |
1433 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1434 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1435 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
b7ff98dd | 1436 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (0 = no check)." } |
6dbd0af5 MD |
1437 | }; |
1438 | ||
1439 | scm_option scm_evaluator_trap_table[] = { | |
b7ff98dd MD |
1440 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1441 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1442 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1443 | }; |
1444 | ||
1445 | SCM | |
1446 | scm_deval_args (l, env, lloc) | |
1447 | SCM l, env, *lloc; | |
0f2d19dd | 1448 | { |
6dbd0af5 | 1449 | SCM *res = lloc; |
0f2d19dd JB |
1450 | while (SCM_NIMP (l)) |
1451 | { | |
1452 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
a23afe53 | 1453 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1454 | l = SCM_CDR (l); |
1455 | } | |
6dbd0af5 | 1456 | return *res; |
0f2d19dd JB |
1457 | } |
1458 | ||
6dbd0af5 MD |
1459 | #endif /* !DEVAL */ |
1460 | ||
1461 | ||
1462 | /* SECTION: Some local definitions for the evaluator. | |
1463 | */ | |
1464 | ||
1465 | #ifndef DEVAL | |
1466 | #ifdef SCM_FLOATS | |
1467 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1468 | #else | |
1469 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1470 | #endif | |
1471 | #endif /* DEVAL */ | |
1472 | ||
399dedcc | 1473 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1474 | |
1475 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1476 | * three heads. This code is compiled twice. | |
1477 | */ | |
1478 | ||
0f2d19dd | 1479 | #if 0 |
1cc91f1b | 1480 | |
0f2d19dd JB |
1481 | SCM |
1482 | scm_ceval (x, env) | |
1483 | SCM x; | |
1484 | SCM env; | |
0f2d19dd JB |
1485 | {} |
1486 | #endif | |
1487 | #if 0 | |
1cc91f1b | 1488 | |
0f2d19dd JB |
1489 | SCM |
1490 | scm_deval (x, env) | |
1491 | SCM x; | |
1492 | SCM env; | |
0f2d19dd JB |
1493 | {} |
1494 | #endif | |
1495 | ||
6dbd0af5 | 1496 | SCM |
0f2d19dd JB |
1497 | SCM_CEVAL (x, env) |
1498 | SCM x; | |
1499 | SCM env; | |
1500 | { | |
1501 | union | |
1502 | { | |
1503 | SCM *lloc; | |
1504 | SCM arg1; | |
f8769b1d | 1505 | } t; |
6dbd0af5 MD |
1506 | SCM proc, arg2; |
1507 | #ifdef DEVAL | |
c0ab1b8d JB |
1508 | scm_debug_frame debug; |
1509 | scm_debug_info *debug_info_end; | |
1646d37b | 1510 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1511 | debug.status = scm_debug_eframe_size; |
c0ab1b8d JB |
1512 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1513 | * sizeof (debug.vect[0])); | |
1514 | debug.info = debug.vect; | |
1515 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1516 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1517 | #endif |
b7ff98dd MD |
1518 | #ifdef EVAL_STACK_CHECKING |
1519 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1520 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1521 | { |
b7ff98dd | 1522 | #ifdef DEVAL |
6dbd0af5 MD |
1523 | debug.info->e.exp = x; |
1524 | debug.info->e.env = env; | |
b7ff98dd | 1525 | #endif |
6dbd0af5 MD |
1526 | scm_report_stack_overflow (); |
1527 | } | |
1528 | #endif | |
1529 | #ifdef DEVAL | |
1530 | goto start; | |
1531 | #endif | |
1532 | loopnoap: | |
1533 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1534 | loop: | |
1535 | #ifdef DEVAL | |
b7ff98dd MD |
1536 | SCM_CLEAR_ARGSREADY (debug); |
1537 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1538 | --debug.info; |
c0ab1b8d | 1539 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1540 | { |
b7ff98dd | 1541 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1542 | debug.info -= 2; |
1543 | } | |
1544 | start: | |
1545 | debug.info->e.exp = x; | |
1546 | debug.info->e.env = env; | |
1547 | if (CHECK_ENTRY) | |
b7ff98dd | 1548 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1549 | { |
b7ff98dd MD |
1550 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1551 | SCM_SET_TAILREC (debug); | |
1552 | SCM_ENTER_FRAME_P = 0; | |
1553 | SCM_RESET_DEBUG_MODE; | |
1554 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 1555 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1556 | else |
1557 | { | |
1558 | scm_make_cont (&t.arg1); | |
c4ac4d88 | 1559 | if (safe_setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1560 | { |
1561 | x = SCM_THROW_VALUE (t.arg1); | |
1562 | if (SCM_IMP (x)) | |
1563 | { | |
1564 | RETURN (x); | |
1565 | } | |
1566 | else | |
1567 | /* This gives the possibility for the debugger to | |
1568 | modify the source expression before evaluation. */ | |
1569 | goto dispatch; | |
1570 | } | |
1571 | } | |
1572 | scm_ithrow (scm_i_enter_frame, | |
1573 | scm_cons2 (t.arg1, tail, | |
1574 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1575 | 0); | |
1576 | } | |
6dbd0af5 | 1577 | #endif |
e3173f93 | 1578 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1579 | dispatch: |
e3173f93 | 1580 | #endif |
0f2d19dd | 1581 | SCM_ASYNC_TICK; |
0f2d19dd JB |
1582 | switch (SCM_TYP7 (x)) |
1583 | { | |
1584 | case scm_tcs_symbols: | |
1585 | /* Only happens when called at top level. | |
1586 | */ | |
1587 | x = scm_cons (x, SCM_UNDEFINED); | |
1588 | goto retval; | |
1589 | ||
1590 | case (127 & SCM_IM_AND): | |
1591 | x = SCM_CDR (x); | |
1592 | t.arg1 = x; | |
1593 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1594 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1595 | { | |
1596 | RETURN (SCM_BOOL_F); | |
1597 | } | |
1598 | else | |
1599 | x = t.arg1; | |
6dbd0af5 | 1600 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1601 | goto carloop; |
1602 | ||
1603 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1604 | cdrxnoap: |
1605 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1606 | cdrxbegin: |
1607 | x = SCM_CDR (x); | |
1608 | ||
1609 | begin: | |
1610 | t.arg1 = x; | |
1611 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1612 | { | |
1613 | SIDEVAL (SCM_CAR (x), env); | |
1614 | x = t.arg1; | |
1615 | } | |
1616 | ||
1617 | carloop: /* scm_eval car of last form in list */ | |
1618 | if (SCM_NCELLP (SCM_CAR (x))) | |
1619 | { | |
1620 | x = SCM_CAR (x); | |
6dbd0af5 | 1621 | RETURN (SCM_IMP (x) ? EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1622 | } |
1623 | ||
1624 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1625 | { | |
1626 | retval: | |
6dbd0af5 | 1627 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1628 | } |
1629 | ||
1630 | x = SCM_CAR (x); | |
1631 | goto loop; /* tail recurse */ | |
1632 | ||
1633 | ||
1634 | case (127 & SCM_IM_CASE): | |
1635 | x = SCM_CDR (x); | |
1636 | t.arg1 = EVALCAR (x, env); | |
1637 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1638 | { | |
1639 | proc = SCM_CAR (x); | |
1640 | if (scm_i_else == SCM_CAR (proc)) | |
1641 | { | |
1642 | x = SCM_CDR (proc); | |
6dbd0af5 | 1643 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1644 | goto begin; |
1645 | } | |
1646 | proc = SCM_CAR (proc); | |
1647 | while (SCM_NIMP (proc)) | |
1648 | { | |
1649 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1650 | { | |
1651 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1652 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1653 | goto begin; |
1654 | } | |
1655 | proc = SCM_CDR (proc); | |
1656 | } | |
1657 | } | |
6dbd0af5 | 1658 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1659 | |
1660 | ||
1661 | case (127 & SCM_IM_COND): | |
1662 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1663 | { | |
1664 | proc = SCM_CAR (x); | |
1665 | t.arg1 = EVALCAR (proc, env); | |
1666 | if (SCM_NFALSEP (t.arg1)) | |
1667 | { | |
1668 | x = SCM_CDR (proc); | |
6dbd0af5 | 1669 | if SCM_NULLP (x) |
0f2d19dd | 1670 | { |
6dbd0af5 | 1671 | RETURN (t.arg1) |
0f2d19dd JB |
1672 | } |
1673 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1674 | { |
1675 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1676 | goto begin; | |
1677 | } | |
0f2d19dd JB |
1678 | proc = SCM_CDR (x); |
1679 | proc = EVALCAR (proc, env); | |
1680 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1681 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1682 | ENTER_APPLY; | |
0f2d19dd JB |
1683 | goto evap1; |
1684 | } | |
1685 | } | |
6dbd0af5 | 1686 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1687 | |
1688 | ||
1689 | case (127 & SCM_IM_DO): | |
1690 | x = SCM_CDR (x); | |
1691 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1692 | t.arg1 = SCM_EOL; /* values */ | |
1693 | while (SCM_NIMP (proc)) | |
1694 | { | |
1695 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1696 | proc = SCM_CDR (proc); | |
1697 | } | |
e2806c10 | 1698 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1699 | x = SCM_CDR (SCM_CDR (x)); |
1700 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1701 | { | |
1702 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1703 | { | |
1704 | t.arg1 = SCM_CAR (proc); /* body */ | |
1705 | SIDEVAL (t.arg1, env); | |
1706 | } | |
1707 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1708 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1709 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1710 | } |
1711 | x = SCM_CDR (proc); | |
1712 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1713 | RETURN (SCM_UNSPECIFIED); |
1714 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1715 | goto begin; |
1716 | ||
1717 | ||
1718 | case (127 & SCM_IM_IF): | |
1719 | x = SCM_CDR (x); | |
1720 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1721 | x = SCM_CDR (x); | |
1722 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1723 | { | |
1724 | RETURN (SCM_UNSPECIFIED); | |
1725 | } | |
6dbd0af5 | 1726 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1727 | goto carloop; |
1728 | ||
1729 | ||
1730 | case (127 & SCM_IM_LET): | |
1731 | x = SCM_CDR (x); | |
1732 | proc = SCM_CAR (SCM_CDR (x)); | |
1733 | t.arg1 = SCM_EOL; | |
1734 | do | |
1735 | { | |
1736 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1737 | } | |
1738 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1739 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1740 | x = SCM_CDR (x); |
6dbd0af5 | 1741 | goto cdrxnoap; |
0f2d19dd JB |
1742 | |
1743 | ||
1744 | case (127 & SCM_IM_LETREC): | |
1745 | x = SCM_CDR (x); | |
e2806c10 | 1746 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1747 | x = SCM_CDR (x); |
1748 | proc = SCM_CAR (x); | |
1749 | t.arg1 = SCM_EOL; | |
1750 | do | |
1751 | { | |
1752 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1753 | } | |
1754 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 1755 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 1756 | goto cdrxnoap; |
0f2d19dd JB |
1757 | |
1758 | ||
1759 | case (127 & SCM_IM_LETSTAR): | |
1760 | x = SCM_CDR (x); | |
1761 | proc = SCM_CAR (x); | |
1762 | if (SCM_IMP (proc)) | |
1763 | { | |
e2806c10 | 1764 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1765 | goto cdrxnoap; |
0f2d19dd JB |
1766 | } |
1767 | do | |
1768 | { | |
1769 | t.arg1 = SCM_CAR (proc); | |
1770 | proc = SCM_CDR (proc); | |
e2806c10 | 1771 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1772 | } |
1773 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1774 | goto cdrxnoap; |
0f2d19dd JB |
1775 | |
1776 | case (127 & SCM_IM_OR): | |
1777 | x = SCM_CDR (x); | |
1778 | t.arg1 = x; | |
1779 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1780 | { | |
1781 | x = EVALCAR (x, env); | |
1782 | if (SCM_NFALSEP (x)) | |
1783 | { | |
1784 | RETURN (x); | |
1785 | } | |
1786 | x = t.arg1; | |
1787 | } | |
6dbd0af5 | 1788 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1789 | goto carloop; |
1790 | ||
1791 | ||
1792 | case (127 & SCM_IM_LAMBDA): | |
1793 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1794 | ||
1795 | ||
1796 | case (127 & SCM_IM_QUOTE): | |
1797 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1798 | ||
1799 | ||
1800 | case (127 & SCM_IM_SET): | |
0f2d19dd JB |
1801 | x = SCM_CDR (x); |
1802 | proc = SCM_CAR (x); | |
6dbd0af5 | 1803 | switch (7 & (int) proc) |
0f2d19dd JB |
1804 | { |
1805 | case 0: | |
1806 | t.lloc = scm_lookupcar (x, env); | |
1807 | break; | |
1808 | case 1: | |
a23afe53 | 1809 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
1810 | break; |
1811 | #ifdef MEMOIZE_LOCALS | |
1812 | case 4: | |
1813 | t.lloc = scm_ilookup (proc, env); | |
1814 | break; | |
1815 | #endif | |
1816 | } | |
1817 | x = SCM_CDR (x); | |
1818 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1819 | #ifdef SICP |
1820 | RETURN (*t.lloc); | |
1821 | #else | |
1822 | RETURN (SCM_UNSPECIFIED); | |
1823 | #endif | |
1824 | ||
1825 | ||
1826 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1827 | x = SCM_CDR (x); | |
1828 | proc = SCM_CAR (x); | |
1829 | x = SCM_CDR (x); | |
1830 | x = evalcar (x, env); | |
6dbd0af5 | 1831 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
1832 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
1833 | { | |
1834 | t.arg1 = x; | |
1835 | proc: | |
1836 | if (SCM_CLOSUREP (t.arg1) | |
1837 | /* Only the first definition determines the name. */ | |
1838 | && (scm_procedure_property (t.arg1, scm_i_inner_name) | |
1839 | == SCM_BOOL_F)) | |
1840 | scm_set_procedure_property_x (t.arg1, scm_i_inner_name, proc); | |
1841 | else if (SCM_TYP16 (t.arg1) == scm_tc16_macro | |
1842 | && SCM_CDR (t.arg1) != t.arg1) | |
1843 | { | |
1844 | t.arg1 = SCM_CDR (t.arg1); | |
1845 | goto proc; | |
1846 | } | |
1847 | } | |
6dbd0af5 | 1848 | #endif |
0f2d19dd JB |
1849 | env = SCM_CAR (env); |
1850 | SCM_DEFER_INTS; | |
a23afe53 MD |
1851 | SCM_SETCAR (env, scm_cons (proc, SCM_CAR (env))); |
1852 | SCM_SETCDR (env, scm_cons (x, SCM_CDR (env))); | |
0f2d19dd JB |
1853 | SCM_ALLOW_INTS; |
1854 | RETURN (SCM_UNSPECIFIED); | |
1855 | ||
1856 | ||
0f2d19dd JB |
1857 | /* new syntactic forms go here. */ |
1858 | case (127 & SCM_MAKISYM (0)): | |
1859 | proc = SCM_CAR (x); | |
1860 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1861 | switch SCM_ISYMNUM (proc) | |
1862 | { | |
1863 | #if 0 | |
1864 | case (SCM_ISYMNUM (IM_VREF)): | |
1865 | { | |
1866 | SCM var; | |
1867 | var = SCM_CAR (SCM_CDR (x)); | |
1868 | RETURN (SCM_CDR(var)); | |
1869 | } | |
1870 | case (SCM_ISYMNUM (IM_VSET)): | |
1871 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1872 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1873 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1874 | #endif |
1875 | ||
1876 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1877 | proc = SCM_CDR (x); | |
1878 | proc = EVALCAR (proc, env); | |
1879 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1880 | if (SCM_CLOSUREP (proc)) | |
1881 | { | |
6dbd0af5 | 1882 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1883 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1884 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1885 | #ifdef DEVAL |
1886 | debug.info->a.args = t.arg1; | |
1887 | #endif | |
0f2d19dd JB |
1888 | #ifndef RECKLESS |
1889 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) | |
1890 | goto wrongnumargs; | |
1891 | #endif | |
e2806c10 | 1892 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), t.arg1, SCM_ENV (proc)); |
0f2d19dd JB |
1893 | x = SCM_CODE (proc); |
1894 | goto cdrxbegin; | |
1895 | } | |
1896 | proc = scm_i_apply; | |
1897 | goto evapply; | |
1898 | ||
1899 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1900 | scm_make_cont (&t.arg1); | |
c4ac4d88 | 1901 | if (safe_setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
1902 | { |
1903 | SCM val; | |
1904 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1905 | RETURN (val); |
0f2d19dd JB |
1906 | } |
1907 | proc = SCM_CDR (x); | |
1908 | proc = evalcar (proc, env); | |
1909 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1910 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1911 | ENTER_APPLY; | |
0f2d19dd JB |
1912 | goto evap1; |
1913 | ||
1914 | default: | |
1915 | goto badfun; | |
1916 | } | |
1917 | ||
1918 | default: | |
1919 | proc = x; | |
1920 | badfun: | |
f5bf2977 | 1921 | /* scm_everr (x, env,...) */ |
523f5266 GH |
1922 | scm_misc_error (NULL, |
1923 | "Wrong type to apply: %S", | |
1924 | scm_listify (proc, SCM_UNDEFINED)); | |
0f2d19dd JB |
1925 | case scm_tc7_vector: |
1926 | case scm_tc7_wvect: | |
1927 | case scm_tc7_bvect: | |
1928 | case scm_tc7_byvect: | |
1929 | case scm_tc7_svect: | |
1930 | case scm_tc7_ivect: | |
1931 | case scm_tc7_uvect: | |
1932 | case scm_tc7_fvect: | |
1933 | case scm_tc7_dvect: | |
1934 | case scm_tc7_cvect: | |
1935 | #ifdef LONGLONGS | |
1936 | case scm_tc7_llvect: | |
1937 | #endif | |
1938 | case scm_tc7_string: | |
1939 | case scm_tc7_mb_string: | |
1940 | case scm_tc7_substring: | |
1941 | case scm_tc7_mb_substring: | |
1942 | case scm_tc7_smob: | |
1943 | case scm_tcs_closures: | |
1944 | case scm_tcs_subrs: | |
1945 | RETURN (x); | |
1946 | ||
1947 | #ifdef MEMOIZE_LOCALS | |
1948 | case (127 & SCM_ILOC00): | |
1949 | proc = *scm_ilookup (SCM_CAR (x), env); | |
1950 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1951 | #ifndef RECKLESS | |
1952 | #ifdef CAUTIOUS | |
1953 | goto checkargs; | |
1954 | #endif | |
1955 | #endif | |
1956 | break; | |
1957 | #endif /* ifdef MEMOIZE_LOCALS */ | |
1958 | ||
1959 | ||
1960 | case scm_tcs_cons_gloc: | |
1961 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
1962 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1963 | #ifndef RECKLESS | |
1964 | #ifdef CAUTIOUS | |
1965 | goto checkargs; | |
1966 | #endif | |
1967 | #endif | |
1968 | break; | |
1969 | ||
1970 | ||
1971 | case scm_tcs_cons_nimcar: | |
1972 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1973 | { | |
f8769b1d MV |
1974 | #ifdef USE_THREADS |
1975 | t.lloc = scm_lookupcar1 (x, env); | |
1976 | if (t.lloc == NULL) | |
1977 | { | |
1978 | /* we have lost the race, start again. */ | |
1979 | goto dispatch; | |
1980 | } | |
1981 | proc = *t.lloc; | |
1982 | #else | |
0f2d19dd | 1983 | proc = *scm_lookupcar (x, env); |
f8769b1d MV |
1984 | #endif |
1985 | ||
0f2d19dd JB |
1986 | if (SCM_IMP (proc)) |
1987 | { | |
1988 | unmemocar (x, env); | |
1989 | goto badfun; | |
1990 | } | |
1991 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1992 | { | |
1993 | unmemocar (x, env); | |
1994 | ||
1995 | handle_a_macro: | |
f8769b1d MV |
1996 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
1997 | scm_cons (env, scm_listofnull)); | |
1998 | ||
0f2d19dd JB |
1999 | switch ((int) (SCM_CAR (proc) >> 16)) |
2000 | { | |
2001 | case 2: | |
2002 | if (scm_ilength (t.arg1) <= 0) | |
2003 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2004 | #ifdef DEVAL |
2005 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2006 | { | |
f8769b1d | 2007 | |
6dbd0af5 MD |
2008 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2009 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2010 | /* Prevent memoizing result of define macro */ | |
2011 | { | |
2012 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2013 | scm_set_source_properties_x (debug.info->e.exp, | |
2014 | scm_source_properties (x)); | |
2015 | } | |
2016 | #endif | |
2017 | SCM_DEFER_INTS; | |
a23afe53 MD |
2018 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2019 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2020 | SCM_ALLOW_INTS; |
2021 | goto dispatch; | |
2022 | } | |
2023 | /* Prevent memoizing of debug info expression. */ | |
2024 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2025 | scm_set_source_properties_x (debug.info->e.exp, | |
2026 | scm_source_properties (x)); | |
2027 | #endif | |
0f2d19dd | 2028 | SCM_DEFER_INTS; |
a23afe53 MD |
2029 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2030 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2031 | SCM_ALLOW_INTS; |
6dbd0af5 | 2032 | goto loopnoap; |
0f2d19dd JB |
2033 | case 1: |
2034 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2035 | goto loopnoap; |
0f2d19dd JB |
2036 | case 0: |
2037 | RETURN (t.arg1); | |
2038 | } | |
2039 | } | |
2040 | } | |
2041 | else | |
2042 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2043 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
2044 | #ifndef RECKLESS | |
2045 | #ifdef CAUTIOUS | |
2046 | checkargs: | |
2047 | #endif | |
2048 | if (SCM_CLOSUREP (proc)) | |
2049 | { | |
2050 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2051 | t.arg1 = SCM_CDR (x); | |
2052 | while (SCM_NIMP (arg2)) | |
2053 | { | |
2054 | if (SCM_NCONSP (arg2)) | |
2055 | goto evapply; | |
2056 | if (SCM_IMP (t.arg1)) | |
2057 | goto umwrongnumargs; | |
2058 | arg2 = SCM_CDR (arg2); | |
2059 | t.arg1 = SCM_CDR (t.arg1); | |
2060 | } | |
2061 | if (SCM_NNULLP (t.arg1)) | |
2062 | goto umwrongnumargs; | |
2063 | } | |
2064 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2065 | goto handle_a_macro; | |
2066 | #endif | |
2067 | } | |
2068 | ||
2069 | ||
6dbd0af5 MD |
2070 | evapply: |
2071 | PREP_APPLY (proc, SCM_EOL); | |
2072 | if (SCM_NULLP (SCM_CDR (x))) { | |
2073 | ENTER_APPLY; | |
0f2d19dd JB |
2074 | switch (SCM_TYP7 (proc)) |
2075 | { /* no arguments given */ | |
2076 | case scm_tc7_subr_0: | |
2077 | RETURN (SCM_SUBRF (proc) ()); | |
2078 | case scm_tc7_subr_1o: | |
2079 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2080 | case scm_tc7_lsubr: | |
2081 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2082 | case scm_tc7_rpsubr: | |
2083 | RETURN (SCM_BOOL_T); | |
2084 | case scm_tc7_asubr: | |
2085 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2086 | #ifdef CCLO |
0f2d19dd JB |
2087 | case scm_tc7_cclo: |
2088 | t.arg1 = proc; | |
2089 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2090 | #ifdef DEVAL |
2091 | debug.info->a.proc = proc; | |
2092 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2093 | #endif | |
0f2d19dd | 2094 | goto evap1; |
6dbd0af5 | 2095 | #endif |
0f2d19dd JB |
2096 | case scm_tcs_closures: |
2097 | x = SCM_CODE (proc); | |
e2806c10 | 2098 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd JB |
2099 | goto cdrxbegin; |
2100 | case scm_tc7_contin: | |
2101 | case scm_tc7_subr_1: | |
2102 | case scm_tc7_subr_2: | |
2103 | case scm_tc7_subr_2o: | |
2104 | case scm_tc7_cxr: | |
2105 | case scm_tc7_subr_3: | |
2106 | case scm_tc7_lsubr_2: | |
2107 | umwrongnumargs: | |
2108 | unmemocar (x, env); | |
2109 | wrongnumargs: | |
f5bf2977 GH |
2110 | /* scm_everr (x, env,...) */ |
2111 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2112 | default: |
2113 | /* handle macros here */ | |
2114 | goto badfun; | |
2115 | } | |
6dbd0af5 | 2116 | } |
0f2d19dd JB |
2117 | |
2118 | /* must handle macros by here */ | |
2119 | x = SCM_CDR (x); | |
2120 | #ifdef CAUTIOUS | |
2121 | if (SCM_IMP (x)) | |
2122 | goto wrongnumargs; | |
2123 | #endif | |
2124 | t.arg1 = EVALCAR (x, env); | |
6dbd0af5 MD |
2125 | #ifdef DEVAL |
2126 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2127 | #endif | |
0f2d19dd JB |
2128 | x = SCM_CDR (x); |
2129 | if (SCM_NULLP (x)) | |
2130 | { | |
6dbd0af5 | 2131 | ENTER_APPLY; |
0f2d19dd JB |
2132 | evap1: |
2133 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2134 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2135 | case scm_tc7_subr_2o: |
2136 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2137 | case scm_tc7_subr_1: | |
2138 | case scm_tc7_subr_1o: | |
2139 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2140 | case scm_tc7_cxr: | |
2141 | #ifdef SCM_FLOATS | |
2142 | if (SCM_SUBRF (proc)) | |
2143 | { | |
2144 | if (SCM_INUMP (t.arg1)) | |
2145 | { | |
2146 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2147 | 0.0)); | |
2148 | } | |
2149 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2150 | if (SCM_REALP (t.arg1)) | |
2151 | { | |
2152 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2153 | } | |
2154 | #ifdef SCM_BIGDIG | |
2155 | if (SCM_BIGP (t.arg1)) | |
2156 | { | |
2157 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2158 | } | |
2159 | #endif | |
2160 | floerr: | |
2161 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2162 | } | |
2163 | #endif | |
2164 | proc = (SCM) SCM_SNAME (proc); | |
2165 | { | |
2166 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2167 | while ('c' != *--chrs) | |
2168 | { | |
2169 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
2170 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2171 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2172 | } | |
2173 | RETURN (t.arg1); | |
2174 | } | |
2175 | case scm_tc7_rpsubr: | |
2176 | RETURN (SCM_BOOL_T); | |
2177 | case scm_tc7_asubr: | |
2178 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2179 | case scm_tc7_lsubr: | |
2180 | #ifdef DEVAL | |
6dbd0af5 | 2181 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2182 | #else |
2183 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2184 | #endif | |
6dbd0af5 | 2185 | #ifdef CCLO |
0f2d19dd JB |
2186 | case scm_tc7_cclo: |
2187 | arg2 = t.arg1; | |
2188 | t.arg1 = proc; | |
2189 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2190 | #ifdef DEVAL |
2191 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2192 | debug.info->a.proc = proc; | |
2193 | #endif | |
0f2d19dd | 2194 | goto evap2; |
6dbd0af5 | 2195 | #endif |
0f2d19dd JB |
2196 | case scm_tcs_closures: |
2197 | x = SCM_CODE (proc); | |
2198 | #ifdef DEVAL | |
e2806c10 | 2199 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2200 | #else |
e2806c10 | 2201 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2202 | #endif |
2203 | goto cdrxbegin; | |
2204 | case scm_tc7_contin: | |
2205 | scm_call_continuation (proc, t.arg1); | |
2206 | case scm_tc7_subr_2: | |
2207 | case scm_tc7_subr_0: | |
2208 | case scm_tc7_subr_3: | |
2209 | case scm_tc7_lsubr_2: | |
2210 | goto wrongnumargs; | |
2211 | default: | |
2212 | goto badfun; | |
2213 | } | |
2214 | } | |
2215 | #ifdef CAUTIOUS | |
2216 | if (SCM_IMP (x)) | |
2217 | goto wrongnumargs; | |
2218 | #endif | |
2219 | { /* have two or more arguments */ | |
2220 | arg2 = EVALCAR (x, env); | |
6dbd0af5 MD |
2221 | #ifdef DEVAL |
2222 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2223 | #endif | |
0f2d19dd JB |
2224 | x = SCM_CDR (x); |
2225 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2226 | ENTER_APPLY; |
0f2d19dd JB |
2227 | #ifdef CCLO |
2228 | evap2: | |
2229 | #endif | |
6dbd0af5 MD |
2230 | switch (SCM_TYP7 (proc)) |
2231 | { /* have two arguments */ | |
2232 | case scm_tc7_subr_2: | |
2233 | case scm_tc7_subr_2o: | |
2234 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2235 | case scm_tc7_lsubr: | |
0f2d19dd | 2236 | #ifdef DEVAL |
6dbd0af5 MD |
2237 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2238 | #else | |
2239 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2240 | #endif |
6dbd0af5 MD |
2241 | case scm_tc7_lsubr_2: |
2242 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2243 | case scm_tc7_rpsubr: | |
2244 | case scm_tc7_asubr: | |
2245 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2246 | #ifdef CCLO | |
2247 | cclon: | |
2248 | case scm_tc7_cclo: | |
0f2d19dd | 2249 | #ifdef DEVAL |
6dbd0af5 MD |
2250 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2251 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2252 | #else |
6dbd0af5 MD |
2253 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2254 | scm_cons2 (t.arg1, arg2, | |
2255 | scm_cons (scm_eval_args (x, env), SCM_EOL)))); | |
0f2d19dd | 2256 | #endif |
6dbd0af5 MD |
2257 | /* case scm_tc7_cclo: |
2258 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2259 | arg2 = t.arg1; | |
2260 | t.arg1 = proc; | |
2261 | proc = SCM_CCLO_SUBR(proc); | |
2262 | goto evap3; */ | |
2263 | #endif | |
2264 | case scm_tc7_subr_0: | |
2265 | case scm_tc7_cxr: | |
2266 | case scm_tc7_subr_1o: | |
2267 | case scm_tc7_subr_1: | |
2268 | case scm_tc7_subr_3: | |
2269 | case scm_tc7_contin: | |
2270 | goto wrongnumargs; | |
2271 | default: | |
2272 | goto badfun; | |
2273 | case scm_tcs_closures: | |
0f2d19dd | 2274 | #ifdef DEVAL |
e2806c10 | 2275 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2276 | #else |
e2806c10 | 2277 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd | 2278 | #endif |
6dbd0af5 MD |
2279 | x = SCM_CODE (proc); |
2280 | goto cdrxbegin; | |
2281 | } | |
0f2d19dd JB |
2282 | } |
2283 | #ifdef DEVAL | |
6dbd0af5 | 2284 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
a23afe53 | 2285 | scm_deval_args (x, env, SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); |
0f2d19dd | 2286 | #endif |
6dbd0af5 MD |
2287 | ENTER_APPLY; |
2288 | switch (SCM_TYP7 (proc)) | |
2289 | { /* have 3 or more arguments */ | |
0f2d19dd | 2290 | #ifdef DEVAL |
6dbd0af5 MD |
2291 | case scm_tc7_subr_3: |
2292 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2293 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CAR (SCM_CDR (SCM_CDR (debug.info->a.args))))); | |
2294 | case scm_tc7_asubr: | |
399dedcc MD |
2295 | #ifdef BUILTIN_RPASUBR |
2296 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2297 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
2298 | do { | |
2299 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
2300 | arg2 = SCM_CDR (arg2); | |
2301 | } while (SCM_NIMP (arg2)); | |
2302 | RETURN (t.arg1) | |
2303 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2304 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2305 | #ifdef BUILTIN_RPASUBR |
2306 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2307 | RETURN (SCM_BOOL_F) | |
2308 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
2309 | do { | |
2310 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
2311 | RETURN (SCM_BOOL_F) | |
2312 | arg2 = SCM_CAR (t.arg1); | |
2313 | t.arg1 = SCM_CDR (t.arg1); | |
2314 | } while (SCM_NIMP (t.arg1)); | |
2315 | RETURN (SCM_BOOL_T) | |
2316 | #else /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2317 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, SCM_CDR (SCM_CDR (debug.info->a.args)), SCM_EOL))) |
71d3aa6d | 2318 | #endif /* BUILTIN_RPASUBR */ |
399dedcc MD |
2319 | case scm_tc7_lsubr_2: |
2320 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
2321 | case scm_tc7_lsubr: | |
2322 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2323 | #ifdef CCLO |
6dbd0af5 MD |
2324 | case scm_tc7_cclo: |
2325 | goto cclon; | |
0f2d19dd | 2326 | #endif |
6dbd0af5 | 2327 | case scm_tcs_closures: |
b7ff98dd | 2328 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2329 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2330 | debug.info->a.args, |
2331 | SCM_ENV (proc)); | |
2332 | x = SCM_CODE (proc); | |
2333 | goto cdrxbegin; | |
2334 | #else /* DEVAL */ | |
2335 | case scm_tc7_subr_3: | |
2336 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2337 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2338 | case scm_tc7_asubr: | |
399dedcc MD |
2339 | #ifdef BUILTIN_RPASUBR |
2340 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2341 | do { | |
2342 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2343 | x = SCM_CDR(x); | |
2344 | } while (SCM_NIMP (x)); | |
2345 | RETURN (t.arg1) | |
2346 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2347 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2348 | #ifdef BUILTIN_RPASUBR |
2349 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2350 | RETURN (SCM_BOOL_F) | |
2351 | do { | |
2352 | t.arg1 = EVALCAR (x, env); | |
2353 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
2354 | RETURN (SCM_BOOL_F) | |
2355 | arg2 = t.arg1; | |
2356 | x = SCM_CDR (x); | |
2357 | } while (SCM_NIMP (x)); | |
2358 | RETURN (SCM_BOOL_T) | |
2359 | #else /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2360 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, scm_eval_args (x, env), SCM_EOL))); |
71d3aa6d | 2361 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 MD |
2362 | case scm_tc7_lsubr_2: |
2363 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env))); | |
2364 | case scm_tc7_lsubr: | |
2365 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)))); | |
0f2d19dd | 2366 | #ifdef CCLO |
6dbd0af5 MD |
2367 | case scm_tc7_cclo: |
2368 | goto cclon; | |
0f2d19dd | 2369 | #endif |
6dbd0af5 MD |
2370 | case scm_tcs_closures: |
2371 | #ifdef DEVAL | |
b7ff98dd | 2372 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2373 | #endif |
e2806c10 | 2374 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2375 | scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)), |
2376 | SCM_ENV (proc)); | |
2377 | x = SCM_CODE (proc); | |
2378 | goto cdrxbegin; | |
0f2d19dd | 2379 | #endif /* DEVAL */ |
6dbd0af5 MD |
2380 | case scm_tc7_subr_2: |
2381 | case scm_tc7_subr_1o: | |
2382 | case scm_tc7_subr_2o: | |
2383 | case scm_tc7_subr_0: | |
2384 | case scm_tc7_cxr: | |
2385 | case scm_tc7_subr_1: | |
2386 | case scm_tc7_contin: | |
2387 | goto wrongnumargs; | |
2388 | default: | |
2389 | goto badfun; | |
2390 | } | |
0f2d19dd JB |
2391 | } |
2392 | #ifdef DEVAL | |
6dbd0af5 MD |
2393 | exit: |
2394 | if (CHECK_EXIT) | |
b7ff98dd | 2395 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2396 | { |
b7ff98dd | 2397 | SCM_EXIT_FRAME_P = 0; |
c6a4fbce | 2398 | SCM_TRACE_P = 0; |
b7ff98dd MD |
2399 | SCM_RESET_DEBUG_MODE; |
2400 | SCM_CLEAR_TRACED_FRAME (debug); | |
2401 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2402 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2403 | else |
2404 | { | |
2405 | scm_make_cont (&t.arg1); | |
c4ac4d88 | 2406 | if (safe_setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
2407 | { |
2408 | proc = SCM_THROW_VALUE (t.arg1); | |
2409 | goto ret; | |
2410 | } | |
2411 | } | |
2412 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2413 | } | |
2414 | ret: | |
1646d37b | 2415 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2416 | return proc; |
2417 | #endif | |
2418 | } | |
2419 | ||
6dbd0af5 MD |
2420 | |
2421 | /* SECTION: This code is compiled once. | |
2422 | */ | |
2423 | ||
0f2d19dd JB |
2424 | #ifndef DEVAL |
2425 | ||
2426 | SCM_PROC(s_procedure_documentation, "procedure-documentation", 1, 0, 0, scm_procedure_documentation); | |
1cc91f1b | 2427 | |
0f2d19dd JB |
2428 | SCM |
2429 | scm_procedure_documentation (proc) | |
2430 | SCM proc; | |
0f2d19dd JB |
2431 | { |
2432 | SCM code; | |
2433 | SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc) && SCM_NIMP (proc) && SCM_TYP7 (proc) != scm_tc7_contin, | |
2434 | proc, SCM_ARG1, s_procedure_documentation); | |
2435 | switch (SCM_TYP7 (proc)) | |
2436 | { | |
2437 | case scm_tcs_closures: | |
2438 | code = SCM_CDR (SCM_CODE (proc)); | |
2439 | if (SCM_IMP (SCM_CDR (code))) | |
2440 | return SCM_BOOL_F; | |
2441 | code = SCM_CAR (code); | |
2442 | if (SCM_IMP (code)) | |
2443 | return SCM_BOOL_F; | |
2444 | if (SCM_STRINGP (code)) | |
2445 | return code; | |
2446 | default: | |
2447 | return SCM_BOOL_F; | |
2448 | /* | |
2449 | case scm_tcs_subrs: | |
2450 | #ifdef CCLO | |
2451 | case scm_tc7_cclo: | |
2452 | #endif | |
2453 | */ | |
2454 | } | |
2455 | } | |
2456 | ||
82a2622a | 2457 | /* This code processes the arguments to apply: |
b145c172 JB |
2458 | |
2459 | (apply PROC ARG1 ... ARGS) | |
2460 | ||
82a2622a JB |
2461 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
2462 | ... arguments onto the front of ARGS, and returns the resulting | |
2463 | list. Note that ARGS is a list; thus, the argument to this | |
2464 | function is a list whose last element is a list. | |
2465 | ||
2466 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
2467 | result. apply:nconc2last takes care of building the list of |
2468 | arguments, given (ARG1 ... ARGS). | |
2469 | ||
82a2622a JB |
2470 | Rather than do new consing, apply:nconc2last destroys its argument. |
2471 | On that topic, this code came into my care with the following | |
2472 | beautifully cryptic comment on that topic: "This will only screw | |
2473 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
2474 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 2475 | |
0f2d19dd | 2476 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); |
1cc91f1b | 2477 | |
0f2d19dd JB |
2478 | SCM |
2479 | scm_nconc2last (lst) | |
2480 | SCM lst; | |
0f2d19dd JB |
2481 | { |
2482 | SCM *lloc; | |
b145c172 | 2483 | SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2484 | lloc = &lst; |
2485 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 2486 | lloc = SCM_CDRLOC (*lloc); |
b145c172 | 2487 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2488 | *lloc = SCM_CAR (*lloc); |
2489 | return lst; | |
2490 | } | |
2491 | ||
2492 | #endif /* !DEVAL */ | |
2493 | ||
6dbd0af5 MD |
2494 | |
2495 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2496 | * It is compiled twice. | |
2497 | */ | |
2498 | ||
0f2d19dd | 2499 | #if 0 |
1cc91f1b | 2500 | |
0f2d19dd JB |
2501 | SCM |
2502 | scm_apply (proc, arg1, args) | |
2503 | SCM proc; | |
2504 | SCM arg1; | |
2505 | SCM args; | |
0f2d19dd JB |
2506 | {} |
2507 | #endif | |
2508 | ||
2509 | #if 0 | |
1cc91f1b | 2510 | |
0f2d19dd JB |
2511 | SCM |
2512 | scm_dapply (proc, arg1, args) | |
2513 | SCM proc; | |
2514 | SCM arg1; | |
2515 | SCM args; | |
0f2d19dd JB |
2516 | {} |
2517 | #endif | |
2518 | ||
1cc91f1b | 2519 | |
82a2622a JB |
2520 | /* Apply a function to a list of arguments. |
2521 | ||
2522 | This function is exported to the Scheme level as taking two | |
2523 | required arguments and a tail argument, as if it were: | |
2524 | (lambda (proc arg1 . args) ...) | |
2525 | Thus, if you just have a list of arguments to pass to a procedure, | |
2526 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
2527 | args, pass the first as ARG1, then cons any remaining fixed args | |
2528 | onto the front of your argument list, and pass that as ARGS. */ | |
2529 | ||
0f2d19dd JB |
2530 | SCM |
2531 | SCM_APPLY (proc, arg1, args) | |
2532 | SCM proc; | |
2533 | SCM arg1; | |
2534 | SCM args; | |
0f2d19dd JB |
2535 | { |
2536 | #ifdef DEBUG_EXTENSIONS | |
2537 | #ifdef DEVAL | |
6dbd0af5 | 2538 | scm_debug_frame debug; |
c0ab1b8d | 2539 | scm_debug_info debug_vect_body; |
1646d37b | 2540 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2541 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 2542 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
2543 | debug.vect[0].a.proc = proc; |
2544 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2545 | scm_last_debug_frame = &debug; |
0f2d19dd | 2546 | #else |
b7ff98dd | 2547 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2548 | return scm_dapply (proc, arg1, args); |
2549 | #endif | |
2550 | #endif | |
2551 | ||
2552 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
2553 | |
2554 | /* If ARGS is the empty list, then we're calling apply with only two | |
2555 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
2556 | the case, futz with things so that ARG1 is the first argument to | |
2557 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
2558 | rest. |
2559 | ||
2560 | Setting the debug apply frame args this way is pretty messy. | |
2561 | Perhaps we should store arg1 and args directly in the frame as | |
2562 | received, and let scm_frame_arguments unpack them, because that's | |
2563 | a relatively rare operation. This works for now; if the Guile | |
2564 | developer archives are still around, see Mikael's post of | |
2565 | 11-Apr-97. */ | |
0f2d19dd JB |
2566 | if (SCM_NULLP (args)) |
2567 | { | |
2568 | if (SCM_NULLP (arg1)) | |
30000774 JB |
2569 | { |
2570 | arg1 = SCM_UNDEFINED; | |
2571 | #ifdef DEVAL | |
2572 | debug.vect[0].a.args = SCM_EOL; | |
2573 | #endif | |
2574 | } | |
0f2d19dd JB |
2575 | else |
2576 | { | |
30000774 JB |
2577 | #ifdef DEVAL |
2578 | debug.vect[0].a.args = arg1; | |
2579 | #endif | |
0f2d19dd JB |
2580 | args = SCM_CDR (arg1); |
2581 | arg1 = SCM_CAR (arg1); | |
2582 | } | |
2583 | } | |
2584 | else | |
2585 | { | |
82a2622a | 2586 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 2587 | args = scm_nconc2last (args); |
30000774 JB |
2588 | #ifdef DEVAL |
2589 | debug.vect[0].a.args = scm_cons (arg1, args); | |
2590 | #endif | |
0f2d19dd | 2591 | } |
0f2d19dd | 2592 | #ifdef DEVAL |
b7ff98dd | 2593 | if (SCM_ENTER_FRAME_P) |
6dbd0af5 MD |
2594 | { |
2595 | SCM tmp; | |
b7ff98dd MD |
2596 | SCM_ENTER_FRAME_P = 0; |
2597 | SCM_RESET_DEBUG_MODE; | |
2598 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2599 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2600 | else |
2601 | { | |
2602 | scm_make_cont (&tmp); | |
c4ac4d88 | 2603 | if (safe_setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
2604 | goto entap; |
2605 | } | |
2606 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2607 | } | |
2608 | entap: | |
2609 | ENTER_APPLY; | |
2610 | #endif | |
2611 | #ifdef CCLO | |
2612 | tail: | |
0f2d19dd JB |
2613 | #endif |
2614 | switch (SCM_TYP7 (proc)) | |
2615 | { | |
2616 | case scm_tc7_subr_2o: | |
2617 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2618 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2619 | case scm_tc7_subr_2: | |
269861c7 MD |
2620 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
2621 | wrongnumargs); | |
0f2d19dd JB |
2622 | args = SCM_CAR (args); |
2623 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2624 | case scm_tc7_subr_0: | |
2625 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2626 | RETURN (SCM_SUBRF (proc) ()) | |
2627 | case scm_tc7_subr_1: | |
2628 | case scm_tc7_subr_1o: | |
2629 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2630 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2631 | case scm_tc7_cxr: | |
2632 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2633 | #ifdef SCM_FLOATS | |
2634 | if (SCM_SUBRF (proc)) | |
2635 | { | |
6dbd0af5 MD |
2636 | if (SCM_INUMP (arg1)) |
2637 | { | |
2638 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2639 | } | |
0f2d19dd | 2640 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2641 | if (SCM_REALP (arg1)) |
2642 | { | |
2643 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2644 | } | |
0f2d19dd JB |
2645 | #ifdef SCM_BIGDIG |
2646 | if SCM_BIGP | |
2647 | (arg1) | |
2648 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) | |
2649 | #endif | |
2650 | floerr: | |
2651 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2652 | } | |
2653 | #endif | |
2654 | proc = (SCM) SCM_SNAME (proc); | |
2655 | { | |
2656 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2657 | while ('c' != *--chrs) | |
2658 | { | |
2659 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2660 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2661 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2662 | } | |
2663 | RETURN (arg1) | |
2664 | } | |
2665 | case scm_tc7_subr_3: | |
2666 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2667 | case scm_tc7_lsubr: | |
2668 | #ifdef DEVAL | |
6dbd0af5 | 2669 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2670 | #else |
2671 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2672 | #endif | |
2673 | case scm_tc7_lsubr_2: | |
2674 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2675 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2676 | case scm_tc7_asubr: | |
2677 | if (SCM_NULLP (args)) | |
2678 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2679 | while (SCM_NIMP (args)) | |
2680 | { | |
2681 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2682 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2683 | args = SCM_CDR (args); | |
2684 | } | |
2685 | RETURN (arg1); | |
2686 | case scm_tc7_rpsubr: | |
2687 | if (SCM_NULLP (args)) | |
2688 | RETURN (SCM_BOOL_T); | |
2689 | while (SCM_NIMP (args)) | |
2690 | { | |
2691 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2692 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2693 | RETURN (SCM_BOOL_F); | |
2694 | arg1 = SCM_CAR (args); | |
2695 | args = SCM_CDR (args); | |
2696 | } | |
2697 | RETURN (SCM_BOOL_T); | |
2698 | case scm_tcs_closures: | |
2699 | #ifdef DEVAL | |
6dbd0af5 | 2700 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2701 | #else |
2702 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2703 | #endif | |
2704 | #ifndef RECKLESS | |
2705 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) | |
2706 | goto wrongnumargs; | |
2707 | #endif | |
e2806c10 | 2708 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), arg1, SCM_ENV (proc)); |
0f2d19dd JB |
2709 | proc = SCM_CODE (proc); |
2710 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
2711 | arg1 = EVALCAR (proc, args); | |
2712 | RETURN (arg1); | |
2713 | case scm_tc7_contin: | |
2714 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2715 | scm_call_continuation (proc, arg1); | |
2716 | #ifdef CCLO | |
2717 | case scm_tc7_cclo: | |
2718 | #ifdef DEVAL | |
6dbd0af5 MD |
2719 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
2720 | arg1 = proc; | |
2721 | proc = SCM_CCLO_SUBR (proc); | |
2722 | debug.vect[0].a.proc = proc; | |
2723 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
2724 | #else |
2725 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
2726 | arg1 = proc; |
2727 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 2728 | #endif |
0f2d19dd JB |
2729 | goto tail; |
2730 | #endif | |
2731 | wrongnumargs: | |
f5bf2977 | 2732 | scm_wrong_num_args (proc); |
0f2d19dd JB |
2733 | default: |
2734 | badproc: | |
2735 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
2736 | RETURN (arg1); | |
2737 | } | |
2738 | #ifdef DEVAL | |
6dbd0af5 MD |
2739 | exit: |
2740 | if (CHECK_EXIT) | |
b7ff98dd | 2741 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2742 | { |
b7ff98dd MD |
2743 | SCM_EXIT_FRAME_P = 0; |
2744 | SCM_RESET_DEBUG_MODE; | |
2745 | SCM_CLEAR_TRACED_FRAME (debug); | |
2746 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2747 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2748 | else |
2749 | { | |
2750 | scm_make_cont (&arg1); | |
c4ac4d88 | 2751 | if (safe_setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
2752 | { |
2753 | proc = SCM_THROW_VALUE (arg1); | |
2754 | goto ret; | |
2755 | } | |
2756 | } | |
2757 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
2758 | } | |
2759 | ret: | |
1646d37b | 2760 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2761 | return proc; |
2762 | #endif | |
2763 | } | |
2764 | ||
6dbd0af5 MD |
2765 | |
2766 | /* SECTION: The rest of this file is only read once. | |
2767 | */ | |
2768 | ||
0f2d19dd JB |
2769 | #ifndef DEVAL |
2770 | ||
2771 | SCM_PROC(s_map, "map", 2, 0, 1, scm_map); | |
1cc91f1b | 2772 | |
0f2d19dd JB |
2773 | SCM |
2774 | scm_map (proc, arg1, args) | |
2775 | SCM proc; | |
2776 | SCM arg1; | |
2777 | SCM args; | |
0f2d19dd JB |
2778 | { |
2779 | long i; | |
2780 | SCM res = SCM_EOL; | |
2781 | SCM *pres = &res; | |
2782 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2783 | ||
2784 | if (SCM_NULLP (arg1)) | |
2785 | return res; | |
2786 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map); | |
2787 | if (SCM_NULLP (args)) | |
2788 | { | |
2789 | while (SCM_NIMP (arg1)) | |
2790 | { | |
2791 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
2792 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
a23afe53 | 2793 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
2794 | arg1 = SCM_CDR (arg1); |
2795 | } | |
2796 | return res; | |
2797 | } | |
2798 | args = scm_vector (scm_cons (arg1, args)); | |
2799 | ve = SCM_VELTS (args); | |
2800 | #ifndef RECKLESS | |
2801 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2802 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map); | |
2803 | #endif | |
2804 | while (1) | |
2805 | { | |
2806 | arg1 = SCM_EOL; | |
2807 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2808 | { | |
2809 | if SCM_IMP | |
2810 | (ve[i]) return res; | |
2811 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2812 | ve[i] = SCM_CDR (ve[i]); | |
2813 | } | |
2814 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 2815 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
2816 | } |
2817 | } | |
2818 | ||
2819 | ||
2820 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
1cc91f1b | 2821 | |
0f2d19dd JB |
2822 | SCM |
2823 | scm_for_each (proc, arg1, args) | |
2824 | SCM proc; | |
2825 | SCM arg1; | |
2826 | SCM args; | |
0f2d19dd JB |
2827 | { |
2828 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2829 | long i; | |
2830 | if SCM_NULLP (arg1) | |
2831 | return SCM_UNSPECIFIED; | |
2832 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each); | |
2833 | if SCM_NULLP (args) | |
2834 | { | |
2835 | while SCM_NIMP (arg1) | |
2836 | { | |
2837 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
2838 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
2839 | arg1 = SCM_CDR (arg1); | |
2840 | } | |
2841 | return SCM_UNSPECIFIED; | |
2842 | } | |
2843 | args = scm_vector (scm_cons (arg1, args)); | |
2844 | ve = SCM_VELTS (args); | |
2845 | #ifndef RECKLESS | |
2846 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2847 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each); | |
2848 | #endif | |
2849 | while (1) | |
2850 | { | |
2851 | arg1 = SCM_EOL; | |
2852 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2853 | { | |
2854 | if SCM_IMP | |
2855 | (ve[i]) return SCM_UNSPECIFIED; | |
2856 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2857 | ve[i] = SCM_CDR (ve[i]); | |
2858 | } | |
2859 | scm_apply (proc, arg1, SCM_EOL); | |
2860 | } | |
2861 | } | |
2862 | ||
2863 | ||
1cc91f1b | 2864 | |
0f2d19dd JB |
2865 | SCM |
2866 | scm_closure (code, env) | |
2867 | SCM code; | |
2868 | SCM env; | |
0f2d19dd JB |
2869 | { |
2870 | register SCM z; | |
2871 | SCM_NEWCELL (z); | |
2872 | SCM_SETCODE (z, code); | |
a23afe53 | 2873 | SCM_SETENV (z, env); |
0f2d19dd JB |
2874 | return z; |
2875 | } | |
2876 | ||
2877 | ||
2878 | long scm_tc16_promise; | |
1cc91f1b | 2879 | |
0f2d19dd JB |
2880 | SCM |
2881 | scm_makprom (code) | |
2882 | SCM code; | |
0f2d19dd JB |
2883 | { |
2884 | register SCM z; | |
2885 | SCM_NEWCELL (z); | |
a23afe53 MD |
2886 | SCM_SETCDR (z, code); |
2887 | SCM_SETCAR (z, scm_tc16_promise); | |
0f2d19dd JB |
2888 | return z; |
2889 | } | |
2890 | ||
2891 | ||
1cc91f1b JB |
2892 | |
2893 | static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
2894 | ||
0f2d19dd | 2895 | static int |
19402679 | 2896 | prinprom (exp, port, pstate) |
0f2d19dd JB |
2897 | SCM exp; |
2898 | SCM port; | |
19402679 | 2899 | scm_print_state *pstate; |
0f2d19dd | 2900 | { |
19402679 | 2901 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd | 2902 | scm_gen_puts (scm_regular_string, "#<promise ", port); |
19402679 MD |
2903 | SCM_SET_WRITINGP (pstate, 1); |
2904 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2905 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2906 | scm_gen_putc ('>', port); |
2907 | return !0; | |
2908 | } | |
2909 | ||
2910 | ||
2911 | SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro); | |
1cc91f1b | 2912 | |
0f2d19dd JB |
2913 | SCM |
2914 | scm_makacro (code) | |
2915 | SCM code; | |
0f2d19dd JB |
2916 | { |
2917 | register SCM z; | |
2918 | SCM_NEWCELL (z); | |
a23afe53 MD |
2919 | SCM_SETCDR (z, code); |
2920 | SCM_SETCAR (z, scm_tc16_macro); | |
0f2d19dd JB |
2921 | return z; |
2922 | } | |
2923 | ||
2924 | ||
2925 | SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro); | |
1cc91f1b | 2926 | |
0f2d19dd JB |
2927 | SCM |
2928 | scm_makmacro (code) | |
2929 | SCM code; | |
0f2d19dd JB |
2930 | { |
2931 | register SCM z; | |
2932 | SCM_NEWCELL (z); | |
a23afe53 MD |
2933 | SCM_SETCDR (z, code); |
2934 | SCM_SETCAR (z, scm_tc16_macro | (1L << 16)); | |
0f2d19dd JB |
2935 | return z; |
2936 | } | |
2937 | ||
2938 | ||
2939 | SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro); | |
1cc91f1b | 2940 | |
0f2d19dd JB |
2941 | SCM |
2942 | scm_makmmacro (code) | |
2943 | SCM code; | |
0f2d19dd JB |
2944 | { |
2945 | register SCM z; | |
2946 | SCM_NEWCELL (z); | |
a23afe53 MD |
2947 | SCM_SETCDR (z, code); |
2948 | SCM_SETCAR (z, scm_tc16_macro | (2L << 16)); | |
0f2d19dd JB |
2949 | return z; |
2950 | } | |
2951 | ||
2952 | ||
7332df66 | 2953 | SCM_PROC (s_macro_p, "macro?", 1, 0, 0, scm_macro_p); |
1cc91f1b | 2954 | |
7332df66 MD |
2955 | SCM |
2956 | scm_macro_p (obj) | |
2957 | SCM obj; | |
2958 | { | |
2959 | return (SCM_NIMP (obj) && SCM_TYP16 (obj) == scm_tc16_macro | |
2960 | ? SCM_BOOL_T | |
2961 | : SCM_BOOL_F); | |
2962 | } | |
1cc91f1b | 2963 | |
7332df66 MD |
2964 | |
2965 | SCM_SYMBOL (scm_sym_syntax, "syntax"); | |
2966 | SCM_SYMBOL (scm_sym_macro, "macro"); | |
2967 | SCM_SYMBOL (scm_sym_mmacro, "macro!"); | |
2968 | ||
2969 | SCM_PROC (s_macro_type, "macro-type", 1, 0, 0, scm_macro_type); | |
2970 | ||
2971 | SCM | |
2972 | scm_macro_type (m) | |
2973 | SCM m; | |
0f2d19dd | 2974 | { |
7332df66 MD |
2975 | if (!(SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro)) |
2976 | return SCM_BOOL_F; | |
2977 | switch ((int) (SCM_CAR (m) >> 16)) | |
2978 | { | |
2979 | case 0: return scm_sym_syntax; | |
2980 | case 1: return scm_sym_macro; | |
2981 | case 2: return scm_sym_mmacro; | |
2982 | default: scm_wrong_type_arg (s_macro_type, 1, m); | |
2983 | } | |
2984 | } | |
2985 | ||
2986 | ||
2987 | SCM_PROC (s_macro_name, "macro-name", 1, 0, 0, scm_macro_name); | |
2988 | ||
2989 | SCM | |
2990 | scm_macro_name (m) | |
2991 | SCM m; | |
2992 | { | |
2993 | SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro, | |
2994 | m, | |
2995 | SCM_ARG1, | |
2996 | s_macro_name); | |
2997 | return scm_procedure_name (SCM_CDR (m)); | |
0f2d19dd JB |
2998 | } |
2999 | ||
7332df66 MD |
3000 | |
3001 | SCM_PROC (s_macro_transformer, "macro-transformer", 1, 0, 0, scm_macro_transformer); | |
3002 | ||
3003 | SCM | |
3004 | scm_macro_transformer (m) | |
3005 | SCM m; | |
3006 | { | |
3007 | SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro, | |
3008 | m, | |
3009 | SCM_ARG1, | |
3010 | s_macro_transformer); | |
80ea260c | 3011 | return SCM_CLOSUREP (SCM_CDR (m)) ? SCM_CDR (m) : SCM_BOOL_F; |
7332df66 MD |
3012 | } |
3013 | ||
3014 | ||
3015 | ||
0f2d19dd | 3016 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); |
1cc91f1b | 3017 | |
0f2d19dd JB |
3018 | SCM |
3019 | scm_force (x) | |
3020 | SCM x; | |
0f2d19dd JB |
3021 | { |
3022 | SCM_ASSERT ((SCM_TYP16 (x) == scm_tc16_promise), x, SCM_ARG1, s_force); | |
3023 | if (!((1L << 16) & SCM_CAR (x))) | |
3024 | { | |
3025 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
3026 | if (!((1L << 16) & SCM_CAR (x))) | |
3027 | { | |
3028 | SCM_DEFER_INTS; | |
a23afe53 MD |
3029 | SCM_SETCDR (x, ans); |
3030 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3031 | SCM_ALLOW_INTS; |
3032 | } | |
3033 | } | |
3034 | return SCM_CDR (x); | |
3035 | } | |
3036 | ||
3037 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
1cc91f1b | 3038 | |
0f2d19dd JB |
3039 | SCM |
3040 | scm_promise_p (x) | |
3041 | SCM x; | |
0f2d19dd JB |
3042 | { |
3043 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
3044 | ? SCM_BOOL_T | |
3045 | : SCM_BOOL_F); | |
3046 | } | |
3047 | ||
3048 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
1cc91f1b | 3049 | |
0f2d19dd JB |
3050 | SCM |
3051 | scm_copy_tree (obj) | |
3052 | SCM obj; | |
0f2d19dd JB |
3053 | { |
3054 | SCM ans, tl; | |
3055 | if SCM_IMP | |
3056 | (obj) return obj; | |
3057 | if (SCM_VECTORP (obj)) | |
3058 | { | |
3059 | scm_sizet i = SCM_LENGTH (obj); | |
3060 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED, SCM_UNDEFINED); | |
3061 | while (i--) | |
3062 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3063 | return ans; | |
3064 | } | |
3065 | if SCM_NCONSP (obj) | |
3066 | return obj; | |
3067 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
3068 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
3069 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) | |
a23afe53 MD |
3070 | { |
3071 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3072 | SCM_UNSPECIFIED)); | |
3073 | tl = SCM_CDR (tl); | |
3074 | } | |
3075 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3076 | return ans; |
3077 | } | |
3078 | ||
1cc91f1b | 3079 | |
0f2d19dd JB |
3080 | SCM |
3081 | scm_eval_3 (obj, copyp, env) | |
3082 | SCM obj; | |
3083 | int copyp; | |
3084 | SCM env; | |
0f2d19dd JB |
3085 | { |
3086 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3087 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3088 | else if (copyp) | |
3089 | obj = scm_copy_tree (obj); | |
6dbd0af5 | 3090 | return XEVAL (obj, env); |
0f2d19dd JB |
3091 | } |
3092 | ||
1cc91f1b | 3093 | |
0f2d19dd JB |
3094 | SCM |
3095 | scm_top_level_env (thunk) | |
3096 | SCM thunk; | |
0f2d19dd JB |
3097 | { |
3098 | if (SCM_IMP(thunk)) | |
3099 | return SCM_EOL; | |
3100 | else | |
3101 | return scm_cons(thunk, (SCM)SCM_EOL); | |
3102 | } | |
3103 | ||
3104 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); | |
1cc91f1b | 3105 | |
0f2d19dd JB |
3106 | SCM |
3107 | scm_eval2 (obj, env_thunk) | |
3108 | SCM obj; | |
3109 | SCM env_thunk; | |
0f2d19dd JB |
3110 | { |
3111 | return scm_eval_3 (obj, 1, scm_top_level_env(env_thunk)); | |
3112 | } | |
3113 | ||
3114 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
1cc91f1b | 3115 | |
0f2d19dd JB |
3116 | SCM |
3117 | scm_eval (obj) | |
3118 | SCM obj; | |
0f2d19dd JB |
3119 | { |
3120 | return | |
dc19d1d2 | 3121 | scm_eval_3(obj, 1, scm_top_level_env(SCM_CDR(scm_top_level_lookup_closure_var))); |
0f2d19dd JB |
3122 | } |
3123 | ||
11f77bfc | 3124 | /* SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); */ |
1cc91f1b | 3125 | |
0f2d19dd JB |
3126 | SCM |
3127 | scm_eval_x (obj) | |
3128 | SCM obj; | |
0f2d19dd JB |
3129 | { |
3130 | return | |
3131 | scm_eval_3(obj, | |
3132 | 0, | |
dc19d1d2 | 3133 | scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var))); |
0f2d19dd JB |
3134 | } |
3135 | ||
3136 | SCM_PROC (s_macro_eval_x, "macro-eval!", 2, 0, 0, scm_macro_eval_x); | |
1cc91f1b | 3137 | |
0f2d19dd JB |
3138 | SCM |
3139 | scm_macro_eval_x (exp, env) | |
3140 | SCM exp; | |
3141 | SCM env; | |
0f2d19dd JB |
3142 | { |
3143 | return scm_eval_3 (exp, 0, env); | |
3144 | } | |
3145 | ||
1cc91f1b | 3146 | |
ee33f8fa MV |
3147 | SCM_PROC (s_definedp, "defined?", 1, 0, 0, scm_definedp); |
3148 | ||
0f2d19dd | 3149 | SCM |
ee33f8fa MV |
3150 | scm_definedp (sym) |
3151 | SCM sym; | |
0f2d19dd | 3152 | { |
ee33f8fa MV |
3153 | SCM vcell; |
3154 | ||
3155 | if (SCM_ISYMP (sym)) | |
0f2d19dd | 3156 | return SCM_BOOL_T; |
ee33f8fa MV |
3157 | |
3158 | SCM_ASSERT (SCM_NIMP (sym) && SCM_SYMBOLP (sym), sym, SCM_ARG1, s_definedp); | |
3159 | ||
3160 | vcell = scm_sym2vcell(sym, | |
0aa1e432 | 3161 | SCM_CDR (scm_top_level_lookup_closure_var), |
ee33f8fa MV |
3162 | SCM_BOOL_F); |
3163 | return (vcell == SCM_BOOL_F || SCM_UNBNDP(SCM_CDR(vcell))) ? | |
3164 | SCM_BOOL_F : SCM_BOOL_T; | |
0f2d19dd JB |
3165 | } |
3166 | ||
7332df66 | 3167 | static scm_smobfuns promsmob = {scm_markcdr, scm_free0, prinprom}; |
0f2d19dd | 3168 | |
7332df66 | 3169 | static scm_smobfuns macrosmob = {scm_markcdr, scm_free0}; |
1cc91f1b | 3170 | |
0f2d19dd JB |
3171 | SCM |
3172 | scm_make_synt (name, macroizer, fcn) | |
3173 | char *name; | |
3174 | SCM (*macroizer) (); | |
3175 | SCM (*fcn) (); | |
0f2d19dd JB |
3176 | { |
3177 | SCM symcell = scm_sysintern (name, SCM_UNDEFINED); | |
3178 | long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); | |
3179 | register SCM z; | |
3180 | if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) | |
3181 | tmp = 0; | |
3182 | SCM_NEWCELL (z); | |
3183 | SCM_SUBRF (z) = fcn; | |
a23afe53 MD |
3184 | SCM_SETCAR (z, tmp + scm_tc7_subr_2); |
3185 | SCM_SETCDR (symcell, macroizer (z)); | |
0f2d19dd JB |
3186 | return SCM_CAR (symcell); |
3187 | } | |
3188 | ||
6dbd0af5 MD |
3189 | |
3190 | /* At this point, scm_deval and scm_dapply are generated. | |
3191 | */ | |
3192 | ||
0f2d19dd | 3193 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3194 | # define DEVAL |
3195 | # include "eval.c" | |
0f2d19dd JB |
3196 | #endif |
3197 | ||
3198 | ||
1cc91f1b | 3199 | |
0f2d19dd JB |
3200 | void |
3201 | scm_init_eval () | |
0f2d19dd | 3202 | { |
0f2d19dd JB |
3203 | scm_tc16_promise = scm_newsmob (&promsmob); |
3204 | scm_tc16_macro = scm_newsmob (¯osmob); | |
3205 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); | |
3206 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
3207 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
3208 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3209 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3210 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3211 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
3212 | ||
3213 | /* acros */ | |
3214 | scm_i_quasiquote = scm_make_synt (s_quasiquote, scm_makacro, scm_m_quasiquote); | |
6dbd0af5 | 3215 | scm_make_synt (s_undefine, scm_makacro, scm_m_undefine); |
0f2d19dd JB |
3216 | scm_make_synt (s_delay, scm_makacro, scm_m_delay); |
3217 | /* end of acros */ | |
3218 | ||
dc19d1d2 JB |
3219 | scm_top_level_lookup_closure_var = |
3220 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3221 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3222 | |
6dbd0af5 MD |
3223 | scm_i_and = scm_make_synt ("and", scm_makmmacro, scm_m_and); |
3224 | scm_i_begin = scm_make_synt ("begin", scm_makmmacro, scm_m_begin); | |
3225 | scm_i_case = scm_make_synt ("case", scm_makmmacro, scm_m_case); | |
3226 | scm_i_cond = scm_make_synt ("cond", scm_makmmacro, scm_m_cond); | |
3227 | scm_i_define = scm_make_synt ("define", scm_makmmacro, scm_m_define); | |
3228 | scm_i_do = scm_make_synt ("do", scm_makmmacro, scm_m_do); | |
3229 | scm_i_if = scm_make_synt ("if", scm_makmmacro, scm_m_if); | |
0f2d19dd JB |
3230 | scm_i_lambda = scm_make_synt ("lambda", scm_makmmacro, scm_m_lambda); |
3231 | scm_i_let = scm_make_synt ("let", scm_makmmacro, scm_m_let); | |
6dbd0af5 MD |
3232 | scm_i_letrec = scm_make_synt ("letrec", scm_makmmacro, scm_m_letrec); |
3233 | scm_i_letstar = scm_make_synt ("let*", scm_makmmacro, scm_m_letstar); | |
3234 | scm_i_or = scm_make_synt ("or", scm_makmmacro, scm_m_or); | |
0f2d19dd | 3235 | scm_i_quote = scm_make_synt ("quote", scm_makmmacro, scm_m_quote); |
6dbd0af5 MD |
3236 | scm_i_set = scm_make_synt ("set!", scm_makmmacro, scm_m_set); |
3237 | scm_i_atapply = scm_make_synt ("@apply", scm_makmmacro, scm_m_apply); | |
3238 | scm_i_atcall_cc = scm_make_synt ("@call-with-current-continuation", | |
3239 | scm_makmmacro, scm_m_cont); | |
3240 | ||
6dbd0af5 MD |
3241 | #ifdef DEBUG_EXTENSIONS |
3242 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
3243 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3244 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3245 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
3246 | #endif | |
3247 | ||
0f2d19dd JB |
3248 | #include "eval.x" |
3249 | } | |
0f2d19dd | 3250 | |
6dbd0af5 | 3251 | #endif /* !DEVAL */ |