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7dc6e754 | 1 | /* Copyright (C) 1995,1996,1997,1998 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" | |
6cb702da | 86 | #include "macros.h" |
20e6290e JB |
87 | #include "procprop.h" |
88 | #include "hashtab.h" | |
ac46ab16 | 89 | #include "hash.h" |
20e6290e JB |
90 | #include "srcprop.h" |
91 | #include "stackchk.h" | |
0c32d76c MD |
92 | #include "objects.h" |
93 | #include "feature.h" | |
185905af | 94 | #include "modules.h" |
20e6290e JB |
95 | |
96 | #include "eval.h" | |
89efbff4 MD |
97 | |
98 | void (*scm_memoize_method) (SCM, SCM); | |
99 | ||
0f2d19dd JB |
100 | \f |
101 | ||
6dbd0af5 MD |
102 | /* The evaluator contains a plethora of EVAL symbols. |
103 | * This is an attempt at explanation. | |
104 | * | |
105 | * The following macros should be used in code which is read twice | |
106 | * (where the choice of evaluator is hard soldered): | |
107 | * | |
108 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
109 | * Originally, it is defined to scm_ceval, but is redefined to | |
110 | * scm_deval during the second pass. | |
111 | * | |
112 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
113 | * only side effects of expressions matter. All immediates are | |
114 | * ignored. | |
115 | * | |
6cb702da | 116 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
117 | * immediate. (This macro never calls an evaluator.) |
118 | * | |
119 | * EVALCAR evaluates the car of an expression. | |
120 | * | |
121 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
122 | * car is a lisp cell. | |
123 | * | |
124 | * The following macros should be used in code which is read once | |
125 | * (where the choice of evaluator is dynamic): | |
126 | * | |
6cb702da | 127 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
128 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
129 | * mode. | |
130 | * | |
6cb702da | 131 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
132 | * depending on the debugging mode. |
133 | * | |
134 | * The main motivation for keeping this plethora is efficiency | |
135 | * together with maintainability (=> locality of code). | |
136 | */ | |
137 | ||
6cb702da MD |
138 | #define SCM_CEVAL scm_ceval |
139 | #define SIDEVAL(x, env) if SCM_NIMP(x) SCM_CEVAL((x), (env)) | |
140 | ||
0f2d19dd JB |
141 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR(x)) \ |
142 | ? *scm_lookupcar(x, env) \ | |
143 | : SCM_CEVAL(SCM_CAR(x), env)) | |
144 | ||
0f2d19dd JB |
145 | #define EVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x))\ |
146 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6cb702da | 147 | ? SCM_EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
148 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
149 | : EVALCELLCAR(x, env)) | |
0f2d19dd | 150 | |
e2806c10 | 151 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
152 | |
153 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 154 | |
0f2d19dd JB |
155 | SCM * |
156 | scm_ilookup (iloc, env) | |
157 | SCM iloc; | |
158 | SCM env; | |
0f2d19dd JB |
159 | { |
160 | register int ir = SCM_IFRAME (iloc); | |
161 | register SCM er = env; | |
162 | for (; 0 != ir; --ir) | |
163 | er = SCM_CDR (er); | |
164 | er = SCM_CAR (er); | |
165 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
166 | er = SCM_CDR (er); | |
167 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
168 | return SCM_CDRLOC (er); |
169 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
170 | } |
171 | #endif | |
172 | ||
f8769b1d MV |
173 | #ifdef USE_THREADS |
174 | ||
175 | /* The Lookup Car Race | |
176 | - by Eva Luator | |
177 | ||
178 | Memoization of variables and special forms is done while executing | |
179 | the code for the first time. As long as there is only one thread | |
180 | everything is fine, but as soon as two threads execute the same | |
181 | code concurrently `for the first time' they can come into conflict. | |
182 | ||
183 | This memoization includes rewriting variable references into more | |
184 | efficient forms and expanding macros. Furthermore, macro expansion | |
185 | includes `compiling' special forms like `let', `cond', etc. into | |
186 | tree-code instructions. | |
187 | ||
188 | There shouldn't normally be a problem with memoizing local and | |
189 | global variable references (into ilocs and glocs), because all | |
190 | threads will mutate the code in *exactly* the same way and (if I | |
191 | read the C code correctly) it is not possible to observe a half-way | |
192 | mutated cons cell. The lookup procedure can handle this | |
193 | transparently without any critical sections. | |
194 | ||
195 | It is different with macro expansion, because macro expansion | |
196 | happens outside of the lookup procedure and can't be | |
197 | undone. Therefore it can't cope with it. It has to indicate | |
198 | failure when it detects a lost race and hope that the caller can | |
199 | handle it. Luckily, it turns out that this is the case. | |
200 | ||
201 | An example to illustrate this: Suppose that the follwing form will | |
202 | be memoized concurrently by two threads | |
203 | ||
204 | (let ((x 12)) x) | |
205 | ||
206 | Let's first examine the lookup of X in the body. The first thread | |
207 | decides that it has to find the symbol "x" in the environment and | |
208 | starts to scan it. Then the other thread takes over and actually | |
209 | overtakes the first. It looks up "x" and substitutes an | |
210 | appropriate iloc for it. Now the first thread continues and | |
211 | completes its lookup. It comes to exactly the same conclusions as | |
212 | the second one and could - without much ado - just overwrite the | |
213 | iloc with the same iloc. | |
214 | ||
215 | But let's see what will happen when the race occurs while looking | |
216 | up the symbol "let" at the start of the form. It could happen that | |
217 | the second thread interrupts the lookup of the first thread and not | |
218 | only substitutes a gloc for it but goes right ahead and replaces it | |
219 | with the compiled form (#@let* (x 12) x). Now, when the first | |
220 | thread completes its lookup, it would replace the #@let* with a | |
221 | gloc pointing to the "let" binding, effectively reverting the form | |
222 | to (let (x 12) x). This is wrong. It has to detect that it has | |
223 | lost the race and the evaluator has to reconsider the changed form | |
224 | completely. | |
225 | ||
226 | This race condition could be resolved with some kind of traffic | |
227 | light (like mutexes) around scm_lookupcar, but I think that it is | |
228 | best to avoid them in this case. They would serialize memoization | |
229 | completely and because lookup involves calling arbitrary Scheme | |
230 | code (via the lookup-thunk), threads could be blocked for an | |
231 | arbitrary amount of time or even deadlock. But with the current | |
232 | solution a lot of unnecessary work is potentially done. */ | |
233 | ||
234 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
235 | return NULL to indicate a failed lookup due to some race conditions | |
236 | between threads. This only happens when VLOC is the first cell of | |
237 | a special form that will eventually be memoized (like `let', etc.) | |
238 | In that case the whole lookup is bogus and the caller has to | |
239 | reconsider the complete special form. | |
240 | ||
241 | SCM_LOOKUPCAR is still there, of course. It just calls | |
242 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
243 | should only be called when it is known that VLOC is not the first | |
244 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
245 | for NULL. I think I've found the only place where this applies. */ | |
246 | ||
247 | #endif /* USE_THREADS */ | |
1cc91f1b | 248 | |
d0b7bad7 | 249 | #ifdef USE_THREADS |
8ecf1f13 JB |
250 | static SCM * |
251 | scm_lookupcar1 (SCM vloc, SCM genv) | |
d0b7bad7 MD |
252 | #else |
253 | SCM * | |
254 | scm_lookupcar (SCM vloc, SCM genv) | |
255 | #endif | |
0f2d19dd JB |
256 | { |
257 | SCM env = genv; | |
e3173f93 JB |
258 | register SCM *al, fl, var = SCM_CAR (vloc); |
259 | #ifdef USE_THREADS | |
260 | register SCM var2 = var; | |
261 | #endif | |
0f2d19dd JB |
262 | #ifdef MEMOIZE_LOCALS |
263 | register SCM iloc = SCM_ILOC00; | |
264 | #endif | |
265 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
266 | { | |
267 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
268 | break; | |
a23afe53 | 269 | al = SCM_CARLOC (env); |
0f2d19dd JB |
270 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
271 | { | |
272 | if (SCM_NCONSP (fl)) | |
33b97402 | 273 | { |
0f2d19dd JB |
274 | if (fl == var) |
275 | { | |
276 | #ifdef MEMOIZE_LOCALS | |
f8769b1d MV |
277 | #ifdef USE_THREADS |
278 | if (SCM_CAR (vloc) != var) | |
279 | goto race; | |
280 | #endif | |
a23afe53 | 281 | SCM_SETCAR (vloc, iloc + SCM_ICDR); |
0f2d19dd | 282 | #endif |
a23afe53 | 283 | return SCM_CDRLOC (*al); |
0f2d19dd | 284 | } |
33b97402 MD |
285 | else |
286 | break; | |
287 | } | |
a23afe53 | 288 | al = SCM_CDRLOC (*al); |
0f2d19dd JB |
289 | if (SCM_CAR (fl) == var) |
290 | { | |
291 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 292 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
293 | if (SCM_UNBNDP (SCM_CAR (*al))) |
294 | { | |
295 | env = SCM_EOL; | |
296 | goto errout; | |
297 | } | |
f8769b1d MV |
298 | #endif |
299 | #ifdef USE_THREADS | |
300 | if (SCM_CAR (vloc) != var) | |
301 | goto race; | |
0f2d19dd | 302 | #endif |
a23afe53 | 303 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 304 | #endif |
a23afe53 | 305 | return SCM_CARLOC (*al); |
0f2d19dd JB |
306 | } |
307 | #ifdef MEMOIZE_LOCALS | |
308 | iloc += SCM_IDINC; | |
309 | #endif | |
310 | } | |
311 | #ifdef MEMOIZE_LOCALS | |
312 | iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC); | |
313 | #endif | |
314 | } | |
315 | { | |
316 | SCM top_thunk, vcell; | |
317 | if (SCM_NIMP(env)) | |
318 | { | |
319 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
320 | env = SCM_CDR (env); | |
321 | } | |
322 | else | |
323 | top_thunk = SCM_BOOL_F; | |
324 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
325 | if (vcell == SCM_BOOL_F) | |
326 | goto errout; | |
327 | else | |
328 | var = vcell; | |
329 | } | |
cf7c17e9 | 330 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
331 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
332 | { | |
333 | var = SCM_CAR (var); | |
334 | errout: | |
f5bf2977 | 335 | /* scm_everr (vloc, genv,...) */ |
523f5266 GH |
336 | scm_misc_error (NULL, |
337 | SCM_NULLP (env) | |
338 | ? "Unbound variable: %S" | |
339 | : "Damaged environment: %S", | |
340 | scm_listify (var, SCM_UNDEFINED)); | |
0f2d19dd JB |
341 | } |
342 | #endif | |
f8769b1d MV |
343 | #ifdef USE_THREADS |
344 | if (SCM_CAR (vloc) != var2) | |
345 | { | |
346 | /* Some other thread has changed the very cell we are working | |
347 | on. In effect, it must have done our job or messed it up | |
348 | completely. */ | |
349 | race: | |
350 | var = SCM_CAR (vloc); | |
351 | if ((var & 7) == 1) | |
352 | return SCM_GLOC_VAL_LOC (var); | |
353 | #ifdef MEMOIZE_LOCALS | |
354 | if ((var & 127) == (127 & SCM_ILOC00)) | |
355 | return scm_ilookup (var, genv); | |
356 | #endif | |
357 | /* We can't cope with anything else than glocs and ilocs. When | |
358 | a special form has been memoized (i.e. `let' into `#@let') we | |
359 | return NULL and expect the calling function to do the right | |
360 | thing. For the evaluator, this means going back and redoing | |
361 | the dispatch on the car of the form. */ | |
362 | return NULL; | |
363 | } | |
364 | #endif /* USE_THREADS */ | |
365 | ||
a23afe53 | 366 | SCM_SETCAR (vloc, var + 1); |
0f2d19dd | 367 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 368 | * but syntax or something.... */ |
a23afe53 | 369 | return SCM_CDRLOC (var); |
0f2d19dd JB |
370 | } |
371 | ||
f8769b1d MV |
372 | #ifdef USE_THREADS |
373 | SCM * | |
374 | scm_lookupcar (vloc, genv) | |
375 | SCM vloc; | |
376 | SCM genv; | |
377 | { | |
378 | SCM *loc = scm_lookupcar1 (vloc, genv); | |
379 | if (loc == NULL) | |
380 | abort (); | |
381 | return loc; | |
382 | } | |
f8769b1d MV |
383 | #endif |
384 | ||
0f2d19dd | 385 | #define unmemocar scm_unmemocar |
1cc91f1b | 386 | |
0f2d19dd JB |
387 | SCM |
388 | scm_unmemocar (form, env) | |
389 | SCM form; | |
390 | SCM env; | |
0f2d19dd | 391 | { |
6dbd0af5 | 392 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 393 | register int ir; |
6dbd0af5 | 394 | #endif |
0f2d19dd JB |
395 | SCM c; |
396 | ||
397 | if (SCM_IMP (form)) | |
398 | return form; | |
399 | c = SCM_CAR (form); | |
400 | if (1 == (c & 7)) | |
a23afe53 | 401 | SCM_SETCAR (form, SCM_CAR (c - 1)); |
0f2d19dd | 402 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 403 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
404 | else if (SCM_ILOCP (c)) |
405 | { | |
406 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
407 | env = SCM_CDR (env); | |
408 | env = SCM_CAR (SCM_CAR (env)); | |
409 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
410 | env = SCM_CDR (env); | |
a23afe53 | 411 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 412 | } |
6dbd0af5 | 413 | #endif |
0f2d19dd JB |
414 | #endif |
415 | return form; | |
416 | } | |
417 | ||
1cc91f1b | 418 | |
0f2d19dd JB |
419 | SCM |
420 | scm_eval_car (pair, env) | |
421 | SCM pair; | |
422 | SCM env; | |
0f2d19dd | 423 | { |
6cb702da | 424 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
425 | } |
426 | ||
427 | \f | |
428 | /* | |
429 | * The following rewrite expressions and | |
430 | * some memoized forms have different syntax | |
431 | */ | |
432 | ||
3eeba8d4 JB |
433 | const char scm_s_expression[] = "missing or extra expression"; |
434 | const char scm_s_test[] = "bad test"; | |
435 | const char scm_s_body[] = "bad body"; | |
436 | const char scm_s_bindings[] = "bad bindings"; | |
437 | const char scm_s_variable[] = "bad variable"; | |
438 | const char scm_s_clauses[] = "bad or missing clauses"; | |
439 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 440 | |
b8229a3b MS |
441 | SCM scm_i_dot, scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply; |
442 | ||
6dbd0af5 MD |
443 | #ifdef DEBUG_EXTENSIONS |
444 | SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame; | |
445 | SCM scm_i_trace; | |
446 | #endif | |
0f2d19dd JB |
447 | |
448 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
449 | ||
450 | ||
1cc91f1b JB |
451 | |
452 | static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, char *what)); | |
453 | ||
0f2d19dd JB |
454 | static void |
455 | bodycheck (xorig, bodyloc, what) | |
456 | SCM xorig; | |
457 | SCM *bodyloc; | |
458 | char *what; | |
0f2d19dd | 459 | { |
6cb702da | 460 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, scm_s_expression); |
0f2d19dd JB |
461 | } |
462 | ||
b8229a3b MS |
463 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
464 | SCM_GLOBAL_SYMBOL(scm_i_quote,s_quote); | |
1cc91f1b | 465 | |
0f2d19dd JB |
466 | SCM |
467 | scm_m_quote (xorig, env) | |
468 | SCM xorig; | |
469 | SCM env; | |
0f2d19dd | 470 | { |
6cb702da | 471 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 472 | xorig, scm_s_expression, s_quote); |
0f2d19dd JB |
473 | return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig)); |
474 | } | |
475 | ||
476 | ||
1cc91f1b | 477 | |
b8229a3b MS |
478 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
479 | SCM_SYMBOL(scm_i_begin, s_begin); | |
480 | ||
0f2d19dd JB |
481 | SCM |
482 | scm_m_begin (xorig, env) | |
483 | SCM xorig; | |
484 | SCM env; | |
0f2d19dd | 485 | { |
6cb702da | 486 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 487 | xorig, scm_s_expression, s_begin); |
0f2d19dd JB |
488 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
489 | } | |
490 | ||
b8229a3b MS |
491 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
492 | SCM_SYMBOL(scm_i_if, s_if); | |
1cc91f1b | 493 | |
0f2d19dd JB |
494 | SCM |
495 | scm_m_if (xorig, env) | |
496 | SCM xorig; | |
497 | SCM env; | |
0f2d19dd JB |
498 | { |
499 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 500 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
0f2d19dd JB |
501 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
502 | } | |
503 | ||
504 | ||
89efbff4 MD |
505 | /* Will go into the RnRS module when Guile is factorized. |
506 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
507 | const char scm_s_set_x[] = "set!"; | |
508 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 509 | |
0f2d19dd | 510 | SCM |
89efbff4 | 511 | scm_m_set_x (xorig, env) |
0f2d19dd JB |
512 | SCM xorig; |
513 | SCM env; | |
0f2d19dd | 514 | { |
6dbd0af5 | 515 | SCM x = SCM_CDR (xorig); |
89efbff4 | 516 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
6cb702da | 517 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 MD |
518 | xorig, scm_s_variable, scm_s_set_x); |
519 | return scm_cons (SCM_IM_SET_X, x); | |
0f2d19dd JB |
520 | } |
521 | ||
522 | ||
523 | #if 0 | |
1cc91f1b | 524 | |
0f2d19dd JB |
525 | SCM |
526 | scm_m_vref (xorig, env) | |
527 | SCM xorig; | |
528 | SCM env; | |
0f2d19dd JB |
529 | { |
530 | SCM x = SCM_CDR (xorig); | |
6cb702da | 531 | SCM_ASSYNT (1 == scm_ilength (x), xorig, scm_s_expression, s_vref); |
0f2d19dd JB |
532 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) |
533 | { | |
f5bf2977 | 534 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 GH |
535 | scm_misc_error (NULL, |
536 | "Bad variable: %S", | |
537 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); | |
0f2d19dd | 538 | } |
6cb702da MD |
539 | SCM_ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), |
540 | xorig, scm_s_variable, s_vref); | |
0f2d19dd JB |
541 | return |
542 | return scm_cons (IM_VREF, x); | |
543 | } | |
544 | ||
545 | ||
1cc91f1b | 546 | |
0f2d19dd JB |
547 | SCM |
548 | scm_m_vset (xorig, env) | |
549 | SCM xorig; | |
550 | SCM env; | |
0f2d19dd JB |
551 | { |
552 | SCM x = SCM_CDR (xorig); | |
6cb702da MD |
553 | SCM_ASSYNT (3 == scm_ilength (x), xorig, scm_s_expression, s_vset); |
554 | SCM_ASSYNT ((DEFSCM_VARIABLEP (SCM_CAR (x)) | |
555 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
556 | xorig, scm_s_variable, s_vset); | |
0f2d19dd JB |
557 | return scm_cons (IM_VSET, x); |
558 | } | |
559 | #endif | |
560 | ||
561 | ||
b8229a3b MS |
562 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
563 | SCM_GLOBAL_SYMBOL(scm_i_and, s_and); | |
1cc91f1b | 564 | |
0f2d19dd JB |
565 | SCM |
566 | scm_m_and (xorig, env) | |
567 | SCM xorig; | |
568 | SCM env; | |
0f2d19dd JB |
569 | { |
570 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 571 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd JB |
572 | if (len >= 1) |
573 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); | |
574 | else | |
575 | return SCM_BOOL_T; | |
576 | } | |
577 | ||
b8229a3b MS |
578 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
579 | SCM_SYMBOL(scm_i_or,s_or); | |
1cc91f1b | 580 | |
0f2d19dd JB |
581 | SCM |
582 | scm_m_or (xorig, env) | |
583 | SCM xorig; | |
584 | SCM env; | |
0f2d19dd JB |
585 | { |
586 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 587 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd JB |
588 | if (len >= 1) |
589 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); | |
590 | else | |
591 | return SCM_BOOL_F; | |
592 | } | |
593 | ||
594 | ||
b8229a3b MS |
595 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
596 | SCM_SYMBOL(scm_i_case, s_case); | |
1cc91f1b | 597 | |
0f2d19dd JB |
598 | SCM |
599 | scm_m_case (xorig, env) | |
600 | SCM xorig; | |
601 | SCM env; | |
0f2d19dd JB |
602 | { |
603 | SCM proc, x = SCM_CDR (xorig); | |
b8229a3b | 604 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
605 | while (SCM_NIMP (x = SCM_CDR (x))) |
606 | { | |
607 | proc = SCM_CAR (x); | |
b8229a3b | 608 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da MD |
609 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
610 | || scm_i_else == SCM_CAR (proc), | |
b8229a3b | 611 | xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
612 | } |
613 | return scm_cons (SCM_IM_CASE, SCM_CDR (xorig)); | |
614 | } | |
615 | ||
616 | ||
b8229a3b MS |
617 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
618 | SCM_SYMBOL(scm_i_cond, s_cond); | |
619 | ||
1cc91f1b | 620 | |
0f2d19dd JB |
621 | SCM |
622 | scm_m_cond (xorig, env) | |
623 | SCM xorig; | |
624 | SCM env; | |
0f2d19dd JB |
625 | { |
626 | SCM arg1, x = SCM_CDR (xorig); | |
627 | int len = scm_ilength (x); | |
b8229a3b | 628 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
629 | while (SCM_NIMP (x)) |
630 | { | |
631 | arg1 = SCM_CAR (x); | |
632 | len = scm_ilength (arg1); | |
b8229a3b | 633 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
634 | if (scm_i_else == SCM_CAR (arg1)) |
635 | { | |
6cb702da | 636 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 637 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 638 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd JB |
639 | } |
640 | if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1))) | |
6cb702da | 641 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 642 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
643 | x = SCM_CDR (x); |
644 | } | |
645 | return scm_cons (SCM_IM_COND, SCM_CDR (xorig)); | |
646 | } | |
647 | ||
b8229a3b MS |
648 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
649 | SCM_GLOBAL_SYMBOL(scm_i_lambda, s_lambda); | |
1cc91f1b | 650 | |
0f2d19dd JB |
651 | SCM |
652 | scm_m_lambda (xorig, env) | |
653 | SCM xorig; | |
654 | SCM env; | |
0f2d19dd JB |
655 | { |
656 | SCM proc, x = SCM_CDR (xorig); | |
657 | if (scm_ilength (x) < 2) | |
658 | goto badforms; | |
659 | proc = SCM_CAR (x); | |
33b97402 MD |
660 | if (SCM_NULLP (proc)) |
661 | goto memlambda; | |
662 | if (SCM_IMP (proc)) | |
663 | goto badforms; | |
664 | if (SCM_SYMBOLP (proc)) | |
665 | goto memlambda; | |
666 | if (SCM_NCONSP (proc)) | |
667 | goto badforms; | |
668 | while (SCM_NIMP (proc)) | |
0f2d19dd | 669 | { |
33b97402 MD |
670 | if (SCM_NCONSP (proc)) |
671 | { | |
0f2d19dd | 672 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
673 | goto badforms; |
674 | else | |
675 | goto memlambda; | |
676 | } | |
0f2d19dd JB |
677 | if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc)))) |
678 | goto badforms; | |
679 | proc = SCM_CDR (proc); | |
680 | } | |
681 | if SCM_NNULLP | |
682 | (proc) | |
6cb702da | 683 | badforms:scm_wta (xorig, scm_s_formals, "lambda"); |
0f2d19dd | 684 | memlambda: |
a23afe53 | 685 | bodycheck (xorig, SCM_CDRLOC (x), "lambda"); |
0f2d19dd JB |
686 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); |
687 | } | |
688 | ||
b8229a3b MS |
689 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
690 | SCM_SYMBOL(scm_i_letstar,s_letstar); | |
0f2d19dd | 691 | |
1cc91f1b | 692 | |
0f2d19dd JB |
693 | SCM |
694 | scm_m_letstar (xorig, env) | |
695 | SCM xorig; | |
696 | SCM env; | |
0f2d19dd JB |
697 | { |
698 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
699 | int len = scm_ilength (x); | |
b8229a3b | 700 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 701 | proc = SCM_CAR (x); |
b8229a3b | 702 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
6dbd0af5 | 703 | while SCM_NIMP (proc) |
0f2d19dd JB |
704 | { |
705 | arg1 = SCM_CAR (proc); | |
b8229a3b | 706 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
6cb702da | 707 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 708 | xorig, scm_s_variable, s_letstar); |
0f2d19dd | 709 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 710 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
711 | proc = SCM_CDR (proc); |
712 | } | |
713 | x = scm_cons (vars, SCM_CDR (x)); | |
b8229a3b | 714 | bodycheck (xorig, SCM_CDRLOC (x), s_letstar); |
0f2d19dd JB |
715 | return scm_cons (SCM_IM_LETSTAR, x); |
716 | } | |
717 | ||
718 | /* DO gets the most radically altered syntax | |
719 | (do ((<var1> <init1> <step1>) | |
720 | (<var2> <init2>) | |
721 | ... ) | |
722 | (<test> <return>) | |
723 | <body>) | |
724 | ;; becomes | |
725 | (do_mem (varn ... var2 var1) | |
726 | (<init1> <init2> ... <initn>) | |
727 | (<test> <return>) | |
728 | (<body>) | |
729 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
730 | */ | |
731 | ||
b8229a3b MS |
732 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
733 | SCM_SYMBOL(scm_i_do, s_do); | |
1cc91f1b | 734 | |
0f2d19dd JB |
735 | SCM |
736 | scm_m_do (xorig, env) | |
737 | SCM xorig; | |
738 | SCM env; | |
0f2d19dd JB |
739 | { |
740 | SCM x = SCM_CDR (xorig), arg1, proc; | |
741 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
742 | SCM *initloc = &inits, *steploc = &steps; | |
743 | int len = scm_ilength (x); | |
6cb702da | 744 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 745 | proc = SCM_CAR (x); |
6cb702da | 746 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
0f2d19dd JB |
747 | while SCM_NIMP |
748 | (proc) | |
749 | { | |
750 | arg1 = SCM_CAR (proc); | |
751 | len = scm_ilength (arg1); | |
6cb702da MD |
752 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
753 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), | |
754 | xorig, scm_s_variable, "do"); | |
0f2d19dd JB |
755 | /* vars reversed here, inits and steps reversed at evaluation */ |
756 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
757 | arg1 = SCM_CDR (arg1); | |
758 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 759 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
760 | arg1 = SCM_CDR (arg1); |
761 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 762 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
763 | proc = SCM_CDR (proc); |
764 | } | |
765 | x = SCM_CDR (x); | |
6cb702da | 766 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
767 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
768 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 769 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
0f2d19dd JB |
770 | return scm_cons (SCM_IM_DO, x); |
771 | } | |
772 | ||
6dbd0af5 MD |
773 | /* evalcar is small version of inline EVALCAR when we don't care about |
774 | * speed | |
775 | */ | |
776 | #define evalcar scm_eval_car | |
0f2d19dd | 777 | |
1cc91f1b JB |
778 | |
779 | static SCM iqq SCM_P ((SCM form, SCM env, int depth)); | |
780 | ||
b8229a3b MS |
781 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
782 | SCM_GLOBAL_SYMBOL(scm_i_quasiquote, s_quasiquote); | |
783 | ||
784 | SCM | |
785 | scm_m_quasiquote (xorig, env) | |
786 | SCM xorig; | |
787 | SCM env; | |
788 | { | |
789 | SCM x = SCM_CDR (xorig); | |
790 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
791 | return iqq (SCM_CAR (x), env, 1); | |
792 | } | |
793 | ||
794 | ||
0f2d19dd JB |
795 | static SCM |
796 | iqq (form, env, depth) | |
797 | SCM form; | |
798 | SCM env; | |
799 | int depth; | |
0f2d19dd JB |
800 | { |
801 | SCM tmp; | |
802 | int edepth = depth; | |
803 | if SCM_IMP | |
804 | (form) return form; | |
805 | if (SCM_VECTORP (form)) | |
806 | { | |
807 | long i = SCM_LENGTH (form); | |
808 | SCM *data = SCM_VELTS (form); | |
809 | tmp = SCM_EOL; | |
810 | for (; --i >= 0;) | |
811 | tmp = scm_cons (data[i], tmp); | |
812 | return scm_vector (iqq (tmp, env, depth)); | |
813 | } | |
814 | if SCM_NCONSP | |
815 | (form) return form; | |
816 | tmp = SCM_CAR (form); | |
817 | if (scm_i_quasiquote == tmp) | |
818 | { | |
819 | depth++; | |
820 | goto label; | |
821 | } | |
822 | if (scm_i_unquote == tmp) | |
823 | { | |
824 | --depth; | |
825 | label: | |
826 | form = SCM_CDR (form); | |
0f2d19dd JB |
827 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
828 | form, SCM_ARG1, s_quasiquote); | |
829 | if (0 == depth) | |
830 | return evalcar (form, env); | |
831 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
832 | } | |
833 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
834 | { | |
835 | tmp = SCM_CDR (tmp); | |
836 | if (0 == --edepth) | |
837 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
838 | } | |
839 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
840 | } | |
841 | ||
842 | /* Here are acros which return values rather than code. */ | |
843 | ||
b8229a3b | 844 | SCM_SYNTAX(s_delay, "delay", scm_makacro, scm_m_delay); |
1cc91f1b | 845 | |
0f2d19dd JB |
846 | SCM |
847 | scm_m_delay (xorig, env) | |
848 | SCM xorig; | |
849 | SCM env; | |
0f2d19dd | 850 | { |
6cb702da | 851 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
0f2d19dd JB |
852 | xorig = SCM_CDR (xorig); |
853 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
854 | env)); | |
855 | } | |
856 | ||
1cc91f1b | 857 | |
b8229a3b MS |
858 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
859 | SCM_SYMBOL(scm_i_define, s_define); | |
1cc91f1b | 860 | |
0f2d19dd JB |
861 | SCM |
862 | scm_m_define (x, env) | |
863 | SCM x; | |
864 | SCM env; | |
0f2d19dd JB |
865 | { |
866 | SCM proc, arg1 = x; | |
867 | x = SCM_CDR (x); | |
6cb702da | 868 | /* SCM_ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ |
b8229a3b | 869 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
870 | proc = SCM_CAR (x); |
871 | x = SCM_CDR (x); | |
872 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
873 | { /* nested define syntax */ | |
874 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
875 | proc = SCM_CAR (proc); | |
876 | } | |
6cb702da | 877 | SCM_ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), |
b8229a3b MS |
878 | arg1, scm_s_variable, s_define); |
879 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
880 | if (SCM_TOP_LEVEL (env)) |
881 | { | |
882 | x = evalcar (x, env); | |
6dbd0af5 | 883 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
884 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
885 | { | |
886 | arg1 = x; | |
887 | proc: | |
888 | if (SCM_CLOSUREP (arg1) | |
889 | /* Only the first definition determines the name. */ | |
890 | && scm_procedure_property (arg1, scm_i_name) == SCM_BOOL_F) | |
891 | scm_set_procedure_property_x (arg1, scm_i_name, proc); | |
892 | else if (SCM_TYP16 (arg1) == scm_tc16_macro | |
893 | && SCM_CDR (arg1) != arg1) | |
894 | { | |
895 | arg1 = SCM_CDR (arg1); | |
896 | goto proc; | |
897 | } | |
898 | } | |
6dbd0af5 | 899 | #endif |
6cb702da | 900 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
0f2d19dd | 901 | #if 0 |
cf7c17e9 | 902 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
903 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) |
904 | && (SCM_CDR (arg1) != x)) | |
905 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
906 | else | |
907 | #endif | |
908 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
909 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 910 | #endif |
a23afe53 | 911 | SCM_SETCDR (arg1, x); |
0f2d19dd JB |
912 | #ifdef SICP |
913 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
914 | #else | |
915 | return SCM_UNSPECIFIED; | |
916 | #endif | |
917 | } | |
918 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
919 | } | |
6dbd0af5 | 920 | |
0f2d19dd JB |
921 | /* end of acros */ |
922 | ||
b8229a3b MS |
923 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
924 | SCM_SYMBOL(scm_i_letrec, s_letrec); | |
1cc91f1b | 925 | |
0f2d19dd JB |
926 | SCM |
927 | scm_m_letrec (xorig, env) | |
928 | SCM xorig; | |
929 | SCM env; | |
0f2d19dd JB |
930 | { |
931 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
932 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
933 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
934 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
935 | ||
6cb702da | 936 | ASRTSYNTAX (scm_ilength (x) >= 2, scm_s_body); |
0f2d19dd JB |
937 | proc = SCM_CAR (x); |
938 | if SCM_NULLP | |
939 | (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
6cb702da | 940 | ASRTSYNTAX (scm_ilength (proc) >= 1, scm_s_bindings); |
0f2d19dd JB |
941 | do |
942 | { | |
943 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
944 | arg1 = SCM_CAR (proc); | |
6cb702da MD |
945 | ASRTSYNTAX (2 == scm_ilength (arg1), scm_s_bindings); |
946 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), scm_s_variable); | |
0f2d19dd JB |
947 | vars = scm_cons (SCM_CAR (arg1), vars); |
948 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 949 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
950 | } |
951 | while SCM_NIMP | |
952 | (proc = SCM_CDR (proc)); | |
953 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); | |
a23afe53 | 954 | bodycheck (xorig, SCM_CDRLOC (SCM_CDR (cdrx)), what); |
0f2d19dd JB |
955 | return scm_cons (SCM_IM_LETREC, cdrx); |
956 | } | |
957 | ||
1cc91f1b | 958 | |
b8229a3b MS |
959 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
960 | SCM_SYMBOL(scm_i_let, s_let); | |
961 | ||
0f2d19dd JB |
962 | SCM |
963 | scm_m_let (xorig, env) | |
964 | SCM xorig; | |
965 | SCM env; | |
0f2d19dd JB |
966 | { |
967 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
968 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
969 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
970 | ||
b8229a3b | 971 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
972 | proc = SCM_CAR (x); |
973 | if (SCM_NULLP (proc) | |
974 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
975 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
976 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
b8229a3b | 977 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
0f2d19dd JB |
978 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ |
979 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
980 | if (!SCM_SYMBOLP (proc)) | |
b8229a3b | 981 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
982 | name = proc; /* named let, build equiv letrec */ |
983 | x = SCM_CDR (x); | |
b8229a3b | 984 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd | 985 | proc = SCM_CAR (x); /* bindings scm_list */ |
b8229a3b | 986 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
0f2d19dd JB |
987 | while SCM_NIMP |
988 | (proc) | |
989 | { /* vars and inits both in order */ | |
990 | arg1 = SCM_CAR (proc); | |
b8229a3b | 991 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
6cb702da | 992 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 993 | xorig, scm_s_variable, s_let); |
0f2d19dd | 994 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 995 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 996 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 997 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
998 | proc = SCM_CDR (proc); |
999 | } | |
1000 | return | |
1001 | scm_m_letrec (scm_cons2 (scm_i_let, | |
1002 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
1003 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
1004 | env); | |
1005 | } | |
1006 | ||
1007 | ||
b8229a3b MS |
1008 | SCM_SYNTAX(s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
1009 | SCM_SYMBOL(scm_i_atapply, s_atapply); | |
1cc91f1b | 1010 | |
0f2d19dd JB |
1011 | SCM |
1012 | scm_m_apply (xorig, env) | |
1013 | SCM xorig; | |
1014 | SCM env; | |
0f2d19dd | 1015 | { |
6cb702da | 1016 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 1017 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
1018 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1019 | } | |
1020 | ||
b8229a3b MS |
1021 | |
1022 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
1023 | SCM_SYMBOL(scm_i_atcall_cc,s_atcall_cc); | |
0f2d19dd | 1024 | |
1cc91f1b | 1025 | |
0f2d19dd JB |
1026 | SCM |
1027 | scm_m_cont (xorig, env) | |
1028 | SCM xorig; | |
1029 | SCM env; | |
0f2d19dd | 1030 | { |
6cb702da | 1031 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1032 | xorig, scm_s_expression, s_atcall_cc); |
0f2d19dd JB |
1033 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
1034 | } | |
1035 | ||
6dbd0af5 MD |
1036 | /* scm_unmemocopy takes a memoized expression together with its |
1037 | * environment and rewrites it to its original form. Thus, it is the | |
1038 | * inversion of the rewrite rules above. The procedure is not | |
1039 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1040 | * code of a closure, in scm_procedure_source, in display_frame when |
1041 | * generating the source for a stackframe in a backtrace, and in | |
1042 | * display_expression. | |
6dbd0af5 MD |
1043 | */ |
1044 | ||
1cc91f1b JB |
1045 | static SCM unmemocopy SCM_P ((SCM x, SCM env)); |
1046 | ||
6dbd0af5 MD |
1047 | static SCM |
1048 | unmemocopy (x, env) | |
1049 | SCM x; | |
1050 | SCM env; | |
6dbd0af5 MD |
1051 | { |
1052 | SCM ls, z; | |
1053 | #ifdef DEBUG_EXTENSIONS | |
1054 | SCM p; | |
1055 | #endif | |
1056 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1057 | return x; | |
1058 | #ifdef DEBUG_EXTENSIONS | |
1059 | p = scm_whash_lookup (scm_source_whash, x); | |
1060 | #endif | |
1061 | switch (SCM_TYP7 (x)) | |
1062 | { | |
1063 | case (127 & SCM_IM_AND): | |
1064 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
1065 | break; | |
1066 | case (127 & SCM_IM_BEGIN): | |
1067 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
1068 | break; | |
1069 | case (127 & SCM_IM_CASE): | |
1070 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
1071 | break; | |
1072 | case (127 & SCM_IM_COND): | |
1073 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
1074 | break; | |
1075 | case (127 & SCM_IM_DO): | |
1076 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
1077 | goto transform; | |
1078 | case (127 & SCM_IM_IF): | |
1079 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
1080 | break; | |
1081 | case (127 & SCM_IM_LET): | |
1082 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
1083 | goto transform; | |
1084 | case (127 & SCM_IM_LETREC): | |
1085 | { | |
1086 | SCM f, v, e, s; | |
1087 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
1088 | transform: | |
1089 | x = SCM_CDR (x); | |
1090 | f = v = SCM_CAR (x); | |
1091 | x = SCM_CDR (x); | |
e2806c10 | 1092 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
1093 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
1094 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
1095 | env = z; | |
1096 | s = SCM_CAR (ls) == scm_i_do | |
1097 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
1098 | : f; | |
1099 | z = SCM_EOL; | |
1100 | do | |
1101 | { | |
1102 | z = scm_acons (SCM_CAR (v), | |
1103 | scm_cons (SCM_CAR (e), | |
1104 | SCM_CAR (s) == SCM_CAR (v) | |
1105 | ? SCM_EOL | |
1106 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1107 | z); | |
1108 | v = SCM_CDR (v); | |
1109 | e = SCM_CDR (e); | |
1110 | s = SCM_CDR (s); | |
1111 | } | |
1112 | while SCM_NIMP (v); | |
a23afe53 MD |
1113 | z = scm_cons (z, SCM_UNSPECIFIED); |
1114 | SCM_SETCDR (ls, z); | |
6dbd0af5 MD |
1115 | if (SCM_CAR (ls) == scm_i_do) |
1116 | { | |
1117 | x = SCM_CDR (x); | |
a23afe53 | 1118 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1119 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1120 | z = SCM_CDR (z); |
1121 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
6dbd0af5 MD |
1122 | } |
1123 | break; | |
1124 | } | |
1125 | case (127 & SCM_IM_LETSTAR): | |
1126 | { | |
1127 | SCM b, y; | |
1128 | x = SCM_CDR (x); | |
1129 | b = SCM_CAR (x); | |
1130 | y = SCM_EOL; | |
1131 | if SCM_IMP (b) | |
1132 | { | |
e2806c10 | 1133 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1134 | goto letstar; |
1135 | } | |
1136 | y = z = scm_acons (SCM_CAR (b), | |
1137 | unmemocar ( | |
1138 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1139 | SCM_UNSPECIFIED); | |
e2806c10 | 1140 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1141 | b = SCM_CDR (SCM_CDR (b)); |
1142 | if (SCM_IMP (b)) | |
1143 | { | |
1144 | SCM_SETCDR (y, SCM_EOL); | |
1145 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1146 | break; | |
1147 | } | |
1148 | do | |
1149 | { | |
a23afe53 MD |
1150 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1151 | unmemocar ( | |
6dbd0af5 | 1152 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1153 | SCM_UNSPECIFIED)); |
1154 | z = SCM_CDR (z); | |
e2806c10 | 1155 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1156 | b = SCM_CDR (SCM_CDR (b)); |
1157 | } | |
1158 | while SCM_NIMP (b); | |
a23afe53 | 1159 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 MD |
1160 | letstar: |
1161 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1162 | break; | |
1163 | } | |
1164 | case (127 & SCM_IM_OR): | |
1165 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1166 | break; | |
1167 | case (127 & SCM_IM_LAMBDA): | |
1168 | x = SCM_CDR (x); | |
1169 | ls = scm_cons (scm_i_lambda, | |
1170 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1171 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1172 | break; |
1173 | case (127 & SCM_IM_QUOTE): | |
1174 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1175 | break; | |
89efbff4 MD |
1176 | case (127 & SCM_IM_SET_X): |
1177 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); | |
6dbd0af5 MD |
1178 | break; |
1179 | case (127 & SCM_IM_DEFINE): | |
1180 | { | |
1181 | SCM n; | |
1182 | x = SCM_CDR (x); | |
1183 | ls = scm_cons (scm_i_define, | |
1184 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1185 | if (SCM_NNULLP (env)) | |
a23afe53 | 1186 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1187 | break; |
1188 | } | |
1189 | case (127 & SCM_MAKISYM (0)): | |
1190 | z = SCM_CAR (x); | |
1191 | if (!SCM_ISYMP (z)) | |
1192 | goto unmemo; | |
1193 | switch SCM_ISYMNUM (z) | |
1194 | { | |
1195 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1196 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1197 | goto loop; | |
1198 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1199 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1200 | goto loop; | |
1201 | default: | |
fa888178 | 1202 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1203 | } |
1204 | unmemo: | |
1205 | default: | |
1206 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1207 | SCM_UNSPECIFIED), | |
1208 | env); | |
1209 | } | |
1210 | loop: | |
1211 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 MD |
1212 | { |
1213 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1214 | SCM_UNSPECIFIED), | |
1215 | env)); | |
1216 | z = SCM_CDR (z); | |
1217 | } | |
1218 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1219 | #ifdef DEBUG_EXTENSIONS |
1220 | if (SCM_NFALSEP (p)) | |
1221 | scm_whash_insert (scm_source_whash, ls, p); | |
1222 | #endif | |
1223 | return ls; | |
1224 | } | |
1225 | ||
1cc91f1b | 1226 | |
6dbd0af5 MD |
1227 | SCM |
1228 | scm_unmemocopy (x, env) | |
1229 | SCM x; | |
1230 | SCM env; | |
6dbd0af5 MD |
1231 | { |
1232 | if (SCM_NNULLP (env)) | |
1233 | /* Make a copy of the lowest frame to protect it from | |
1234 | modifications by SCM_IM_DEFINE */ | |
1235 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1236 | else | |
1237 | return unmemocopy (x, env); | |
1238 | } | |
1239 | ||
cf7c17e9 | 1240 | #ifndef SCM_RECKLESS |
1cc91f1b | 1241 | |
0f2d19dd JB |
1242 | int |
1243 | scm_badargsp (formals, args) | |
1244 | SCM formals; | |
1245 | SCM args; | |
0f2d19dd JB |
1246 | { |
1247 | while SCM_NIMP | |
1248 | (formals) | |
1249 | { | |
1250 | if SCM_NCONSP | |
1251 | (formals) return 0; | |
1252 | if SCM_IMP | |
1253 | (args) return 1; | |
1254 | formals = SCM_CDR (formals); | |
1255 | args = SCM_CDR (args); | |
1256 | } | |
1257 | return SCM_NNULLP (args) ? 1 : 0; | |
1258 | } | |
1259 | #endif | |
1260 | ||
1261 | ||
1262 | \f | |
6dbd0af5 | 1263 | SCM |
680ed4a8 | 1264 | scm_eval_args (l, env, proc) |
6dbd0af5 MD |
1265 | SCM l; |
1266 | SCM env; | |
680ed4a8 | 1267 | SCM proc; |
6dbd0af5 | 1268 | { |
680ed4a8 | 1269 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1270 | while (SCM_NIMP (l)) |
1271 | { | |
cf7c17e9 | 1272 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1273 | if (SCM_IMP (l)) |
1274 | goto wrongnumargs; | |
1275 | else if (SCM_CONSP (l)) | |
1276 | { | |
1277 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1278 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1279 | else |
1280 | res = EVALCELLCAR (l, env); | |
1281 | } | |
1282 | else if (SCM_TYP3 (l) == 1) | |
1283 | { | |
1284 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1285 | res = SCM_CAR (l); /* struct planted in code */ | |
1286 | } | |
1287 | else | |
1288 | goto wrongnumargs; | |
1289 | #else | |
1290 | res = EVALCAR (l, env); | |
1291 | #endif | |
1292 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1293 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1294 | l = SCM_CDR (l); |
1295 | } | |
cf7c17e9 | 1296 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1297 | if (SCM_NNULLP (l)) |
1298 | { | |
1299 | wrongnumargs: | |
1300 | scm_wrong_num_args (proc); | |
1301 | } | |
1302 | #endif | |
1303 | return results; | |
6dbd0af5 | 1304 | } |
c4ac4d88 JB |
1305 | |
1306 | ||
0f2d19dd JB |
1307 | #endif /* !DEVAL */ |
1308 | ||
6dbd0af5 MD |
1309 | |
1310 | /* SECTION: This code is specific for the debugging support. One | |
1311 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1312 | * defined. | |
1313 | */ | |
1314 | ||
1315 | #ifndef DEVAL | |
1316 | ||
1317 | #define SCM_APPLY scm_apply | |
1318 | #define PREP_APPLY(proc, args) | |
1319 | #define ENTER_APPLY | |
1320 | #define RETURN(x) return x; | |
b7ff98dd MD |
1321 | #ifdef STACK_CHECKING |
1322 | #ifndef NO_CEVAL_STACK_CHECKING | |
1323 | #define EVAL_STACK_CHECKING | |
1324 | #endif | |
6dbd0af5 MD |
1325 | #endif |
1326 | ||
1327 | #else /* !DEVAL */ | |
1328 | ||
0f2d19dd JB |
1329 | #undef SCM_CEVAL |
1330 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1331 | #undef SCM_APPLY | |
1332 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1333 | #undef PREP_APPLY |
1334 | #define PREP_APPLY(p, l) \ | |
1335 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1336 | #undef ENTER_APPLY | |
1337 | #define ENTER_APPLY \ | |
1338 | {\ | |
b7ff98dd | 1339 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1340 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1341 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1342 | {\ |
b7ff98dd | 1343 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
c6a4fbce | 1344 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1345 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1346 | {\ |
c0ab1b8d | 1347 | tmp = scm_make_debugobj (&debug);\ |
6dbd0af5 | 1348 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1349 | }\ |
6dbd0af5 MD |
1350 | else\ |
1351 | {\ | |
1352 | scm_make_cont (&tmp);\ | |
ca6ef71a | 1353 | if (!setjmp (SCM_JMPBUF (tmp)))\ |
6dbd0af5 MD |
1354 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
1355 | }\ | |
1356 | }\ | |
1357 | } | |
0f2d19dd JB |
1358 | #undef RETURN |
1359 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1360 | #ifdef STACK_CHECKING |
1361 | #ifndef EVAL_STACK_CHECKING | |
1362 | #define EVAL_STACK_CHECKING | |
1363 | #endif | |
6dbd0af5 MD |
1364 | #endif |
1365 | ||
1366 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1367 | * *fixme*: Although efficiency is important here, this state variable | |
1368 | * should probably not be a global. It should be related to the | |
1369 | * current repl. | |
1370 | */ | |
1371 | ||
1cc91f1b JB |
1372 | |
1373 | SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env)); | |
0f2d19dd | 1374 | |
1646d37b | 1375 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1376 | * information stack frame. It is accessed very often from the |
1377 | * debugging evaluator, so it should probably not be indirectly | |
1378 | * addressed. Better to save and restore it from the current root at | |
1379 | * any stack swaps. | |
1380 | */ | |
1381 | ||
1646d37b MD |
1382 | #ifndef USE_THREADS |
1383 | scm_debug_frame *scm_last_debug_frame; | |
1384 | #endif | |
6dbd0af5 MD |
1385 | |
1386 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1387 | * stack frames at each real stack frame. | |
1388 | */ | |
1389 | ||
1390 | int scm_debug_eframe_size; | |
1391 | ||
b7ff98dd | 1392 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1393 | |
a74145b8 MD |
1394 | int scm_eval_stack; |
1395 | ||
33b97402 | 1396 | scm_option scm_eval_opts[] = { |
a74145b8 | 1397 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1398 | }; |
1399 | ||
6dbd0af5 | 1400 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1401 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1402 | "*Flyweight representation of the stack at traps." }, | |
1403 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1404 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1405 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1406 | "Record procedure names at definition." }, | |
1407 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1408 | "Display backtrace in anti-chronological order." }, | |
4e646a03 MD |
1409 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1410 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1411 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1412 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1413 | "Maximal number of stored backtrace frames." }, | |
1414 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1415 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1416 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1417 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1418 | }; |
1419 | ||
1420 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1421 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1422 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1423 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1424 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1425 | }; |
1426 | ||
33b97402 MD |
1427 | SCM_PROC (s_eval_options_interface, "eval-options-interface", 0, 1, 0, scm_eval_options_interface); |
1428 | ||
1429 | SCM | |
8ecf1f13 | 1430 | scm_eval_options_interface (SCM setting) |
33b97402 MD |
1431 | { |
1432 | SCM ans; | |
1433 | SCM_DEFER_INTS; | |
1434 | ans = scm_options (setting, | |
1435 | scm_eval_opts, | |
1436 | SCM_N_EVAL_OPTIONS, | |
1437 | s_eval_options_interface); | |
a74145b8 | 1438 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1439 | SCM_ALLOW_INTS; |
1440 | return ans; | |
1441 | } | |
1442 | ||
1443 | SCM_PROC (s_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, scm_evaluator_traps); | |
1444 | ||
1445 | SCM | |
1446 | scm_evaluator_traps (setting) | |
1447 | SCM setting; | |
1448 | { | |
1449 | SCM ans; | |
1450 | SCM_DEFER_INTS; | |
1451 | ans = scm_options (setting, | |
1452 | scm_evaluator_trap_table, | |
1453 | SCM_N_EVALUATOR_TRAPS, | |
1454 | s_evaluator_traps); | |
1455 | SCM_RESET_DEBUG_MODE; | |
1456 | SCM_ALLOW_INTS | |
1457 | return ans; | |
1458 | } | |
1459 | ||
6dbd0af5 | 1460 | SCM |
680ed4a8 MD |
1461 | scm_deval_args (l, env, proc, lloc) |
1462 | SCM l, env, proc, *lloc; | |
0f2d19dd | 1463 | { |
680ed4a8 | 1464 | SCM *results = lloc, res; |
0f2d19dd JB |
1465 | while (SCM_NIMP (l)) |
1466 | { | |
cf7c17e9 | 1467 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1468 | if (SCM_IMP (l)) |
1469 | goto wrongnumargs; | |
1470 | else if (SCM_CONSP (l)) | |
1471 | { | |
1472 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1473 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1474 | else |
1475 | res = EVALCELLCAR (l, env); | |
1476 | } | |
1477 | else if (SCM_TYP3 (l) == 1) | |
1478 | { | |
1479 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1480 | res = SCM_CAR (l); /* struct planted in code */ | |
1481 | } | |
1482 | else | |
1483 | goto wrongnumargs; | |
1484 | #else | |
1485 | res = EVALCAR (l, env); | |
1486 | #endif | |
1487 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1488 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1489 | l = SCM_CDR (l); |
1490 | } | |
cf7c17e9 | 1491 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1492 | if (SCM_NNULLP (l)) |
1493 | { | |
1494 | wrongnumargs: | |
1495 | scm_wrong_num_args (proc); | |
1496 | } | |
1497 | #endif | |
1498 | return *results; | |
0f2d19dd JB |
1499 | } |
1500 | ||
6dbd0af5 MD |
1501 | #endif /* !DEVAL */ |
1502 | ||
1503 | ||
1504 | /* SECTION: Some local definitions for the evaluator. | |
1505 | */ | |
1506 | ||
1507 | #ifndef DEVAL | |
1508 | #ifdef SCM_FLOATS | |
1509 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1510 | #else | |
1511 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1512 | #endif | |
1513 | #endif /* DEVAL */ | |
1514 | ||
399dedcc | 1515 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1516 | |
1517 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1518 | * three heads. This code is compiled twice. | |
1519 | */ | |
1520 | ||
0f2d19dd | 1521 | #if 0 |
1cc91f1b | 1522 | |
0f2d19dd JB |
1523 | SCM |
1524 | scm_ceval (x, env) | |
1525 | SCM x; | |
1526 | SCM env; | |
0f2d19dd JB |
1527 | {} |
1528 | #endif | |
1529 | #if 0 | |
1cc91f1b | 1530 | |
0f2d19dd JB |
1531 | SCM |
1532 | scm_deval (x, env) | |
1533 | SCM x; | |
1534 | SCM env; | |
0f2d19dd JB |
1535 | {} |
1536 | #endif | |
1537 | ||
6dbd0af5 | 1538 | SCM |
0f2d19dd JB |
1539 | SCM_CEVAL (x, env) |
1540 | SCM x; | |
1541 | SCM env; | |
1542 | { | |
1543 | union | |
1544 | { | |
1545 | SCM *lloc; | |
1546 | SCM arg1; | |
f8769b1d | 1547 | } t; |
6dbd0af5 MD |
1548 | SCM proc, arg2; |
1549 | #ifdef DEVAL | |
c0ab1b8d JB |
1550 | scm_debug_frame debug; |
1551 | scm_debug_info *debug_info_end; | |
1646d37b | 1552 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1553 | debug.status = scm_debug_eframe_size; |
c0ab1b8d JB |
1554 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1555 | * sizeof (debug.vect[0])); | |
1556 | debug.info = debug.vect; | |
1557 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1558 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1559 | #endif |
b7ff98dd MD |
1560 | #ifdef EVAL_STACK_CHECKING |
1561 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1562 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1563 | { |
b7ff98dd | 1564 | #ifdef DEVAL |
6dbd0af5 MD |
1565 | debug.info->e.exp = x; |
1566 | debug.info->e.env = env; | |
b7ff98dd | 1567 | #endif |
6dbd0af5 MD |
1568 | scm_report_stack_overflow (); |
1569 | } | |
1570 | #endif | |
1571 | #ifdef DEVAL | |
1572 | goto start; | |
1573 | #endif | |
1574 | loopnoap: | |
1575 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1576 | loop: | |
1577 | #ifdef DEVAL | |
b7ff98dd MD |
1578 | SCM_CLEAR_ARGSREADY (debug); |
1579 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1580 | --debug.info; |
c0ab1b8d | 1581 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1582 | { |
b7ff98dd | 1583 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1584 | debug.info -= 2; |
1585 | } | |
1586 | start: | |
1587 | debug.info->e.exp = x; | |
1588 | debug.info->e.env = env; | |
b6d75948 | 1589 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1590 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1591 | { |
b7ff98dd MD |
1592 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1593 | SCM_SET_TAILREC (debug); | |
b7ff98dd | 1594 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1595 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1596 | else |
1597 | { | |
1598 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1599 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1600 | { |
1601 | x = SCM_THROW_VALUE (t.arg1); | |
1602 | if (SCM_IMP (x)) | |
1603 | { | |
1604 | RETURN (x); | |
1605 | } | |
1606 | else | |
1607 | /* This gives the possibility for the debugger to | |
1608 | modify the source expression before evaluation. */ | |
1609 | goto dispatch; | |
1610 | } | |
1611 | } | |
1612 | scm_ithrow (scm_i_enter_frame, | |
1613 | scm_cons2 (t.arg1, tail, | |
1614 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1615 | 0); | |
1616 | } | |
6dbd0af5 | 1617 | #endif |
e3173f93 | 1618 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1619 | dispatch: |
e3173f93 | 1620 | #endif |
9cb5124f | 1621 | SCM_TICK; |
0f2d19dd JB |
1622 | switch (SCM_TYP7 (x)) |
1623 | { | |
1624 | case scm_tcs_symbols: | |
1625 | /* Only happens when called at top level. | |
1626 | */ | |
1627 | x = scm_cons (x, SCM_UNDEFINED); | |
1628 | goto retval; | |
1629 | ||
1630 | case (127 & SCM_IM_AND): | |
1631 | x = SCM_CDR (x); | |
1632 | t.arg1 = x; | |
1633 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1634 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1635 | { | |
1636 | RETURN (SCM_BOOL_F); | |
1637 | } | |
1638 | else | |
1639 | x = t.arg1; | |
6dbd0af5 | 1640 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1641 | goto carloop; |
1642 | ||
1643 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1644 | cdrxnoap: |
1645 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1646 | cdrxbegin: |
1647 | x = SCM_CDR (x); | |
1648 | ||
1649 | begin: | |
1650 | t.arg1 = x; | |
1651 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1652 | { | |
1653 | SIDEVAL (SCM_CAR (x), env); | |
1654 | x = t.arg1; | |
1655 | } | |
1656 | ||
1657 | carloop: /* scm_eval car of last form in list */ | |
1658 | if (SCM_NCELLP (SCM_CAR (x))) | |
1659 | { | |
1660 | x = SCM_CAR (x); | |
6cb702da | 1661 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1662 | } |
1663 | ||
1664 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1665 | { | |
1666 | retval: | |
6dbd0af5 | 1667 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1668 | } |
1669 | ||
1670 | x = SCM_CAR (x); | |
1671 | goto loop; /* tail recurse */ | |
1672 | ||
1673 | ||
1674 | case (127 & SCM_IM_CASE): | |
1675 | x = SCM_CDR (x); | |
1676 | t.arg1 = EVALCAR (x, env); | |
1677 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1678 | { | |
1679 | proc = SCM_CAR (x); | |
1680 | if (scm_i_else == SCM_CAR (proc)) | |
1681 | { | |
1682 | x = SCM_CDR (proc); | |
6dbd0af5 | 1683 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1684 | goto begin; |
1685 | } | |
1686 | proc = SCM_CAR (proc); | |
1687 | while (SCM_NIMP (proc)) | |
1688 | { | |
1689 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1690 | { | |
1691 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1692 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1693 | goto begin; |
1694 | } | |
1695 | proc = SCM_CDR (proc); | |
1696 | } | |
1697 | } | |
6dbd0af5 | 1698 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1699 | |
1700 | ||
1701 | case (127 & SCM_IM_COND): | |
1702 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1703 | { | |
1704 | proc = SCM_CAR (x); | |
1705 | t.arg1 = EVALCAR (proc, env); | |
1706 | if (SCM_NFALSEP (t.arg1)) | |
1707 | { | |
1708 | x = SCM_CDR (proc); | |
6dbd0af5 | 1709 | if SCM_NULLP (x) |
0f2d19dd | 1710 | { |
6dbd0af5 | 1711 | RETURN (t.arg1) |
0f2d19dd JB |
1712 | } |
1713 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1714 | { |
1715 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1716 | goto begin; | |
1717 | } | |
0f2d19dd JB |
1718 | proc = SCM_CDR (x); |
1719 | proc = EVALCAR (proc, env); | |
1720 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1721 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1722 | ENTER_APPLY; | |
0f2d19dd JB |
1723 | goto evap1; |
1724 | } | |
1725 | } | |
6dbd0af5 | 1726 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1727 | |
1728 | ||
1729 | case (127 & SCM_IM_DO): | |
1730 | x = SCM_CDR (x); | |
1731 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1732 | t.arg1 = SCM_EOL; /* values */ | |
1733 | while (SCM_NIMP (proc)) | |
1734 | { | |
1735 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1736 | proc = SCM_CDR (proc); | |
1737 | } | |
e2806c10 | 1738 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1739 | x = SCM_CDR (SCM_CDR (x)); |
1740 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1741 | { | |
1742 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1743 | { | |
1744 | t.arg1 = SCM_CAR (proc); /* body */ | |
1745 | SIDEVAL (t.arg1, env); | |
1746 | } | |
1747 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1748 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1749 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1750 | } |
1751 | x = SCM_CDR (proc); | |
1752 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1753 | RETURN (SCM_UNSPECIFIED); |
1754 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1755 | goto begin; |
1756 | ||
1757 | ||
1758 | case (127 & SCM_IM_IF): | |
1759 | x = SCM_CDR (x); | |
1760 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1761 | x = SCM_CDR (x); | |
1762 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1763 | { | |
1764 | RETURN (SCM_UNSPECIFIED); | |
1765 | } | |
6dbd0af5 | 1766 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1767 | goto carloop; |
1768 | ||
1769 | ||
1770 | case (127 & SCM_IM_LET): | |
1771 | x = SCM_CDR (x); | |
1772 | proc = SCM_CAR (SCM_CDR (x)); | |
1773 | t.arg1 = SCM_EOL; | |
1774 | do | |
1775 | { | |
1776 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1777 | } | |
1778 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1779 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1780 | x = SCM_CDR (x); |
6dbd0af5 | 1781 | goto cdrxnoap; |
0f2d19dd JB |
1782 | |
1783 | ||
1784 | case (127 & SCM_IM_LETREC): | |
1785 | x = SCM_CDR (x); | |
e2806c10 | 1786 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1787 | x = SCM_CDR (x); |
1788 | proc = SCM_CAR (x); | |
1789 | t.arg1 = SCM_EOL; | |
1790 | do | |
1791 | { | |
1792 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1793 | } | |
1794 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 1795 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 1796 | goto cdrxnoap; |
0f2d19dd JB |
1797 | |
1798 | ||
1799 | case (127 & SCM_IM_LETSTAR): | |
1800 | x = SCM_CDR (x); | |
1801 | proc = SCM_CAR (x); | |
1802 | if (SCM_IMP (proc)) | |
1803 | { | |
e2806c10 | 1804 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1805 | goto cdrxnoap; |
0f2d19dd JB |
1806 | } |
1807 | do | |
1808 | { | |
1809 | t.arg1 = SCM_CAR (proc); | |
1810 | proc = SCM_CDR (proc); | |
e2806c10 | 1811 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1812 | } |
1813 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1814 | goto cdrxnoap; |
0f2d19dd JB |
1815 | |
1816 | case (127 & SCM_IM_OR): | |
1817 | x = SCM_CDR (x); | |
1818 | t.arg1 = x; | |
1819 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1820 | { | |
1821 | x = EVALCAR (x, env); | |
1822 | if (SCM_NFALSEP (x)) | |
1823 | { | |
1824 | RETURN (x); | |
1825 | } | |
1826 | x = t.arg1; | |
1827 | } | |
6dbd0af5 | 1828 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1829 | goto carloop; |
1830 | ||
1831 | ||
1832 | case (127 & SCM_IM_LAMBDA): | |
1833 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1834 | ||
1835 | ||
1836 | case (127 & SCM_IM_QUOTE): | |
1837 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1838 | ||
1839 | ||
89efbff4 | 1840 | case (127 & SCM_IM_SET_X): |
0f2d19dd JB |
1841 | x = SCM_CDR (x); |
1842 | proc = SCM_CAR (x); | |
6dbd0af5 | 1843 | switch (7 & (int) proc) |
0f2d19dd JB |
1844 | { |
1845 | case 0: | |
1846 | t.lloc = scm_lookupcar (x, env); | |
1847 | break; | |
1848 | case 1: | |
a23afe53 | 1849 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
1850 | break; |
1851 | #ifdef MEMOIZE_LOCALS | |
1852 | case 4: | |
1853 | t.lloc = scm_ilookup (proc, env); | |
1854 | break; | |
1855 | #endif | |
1856 | } | |
1857 | x = SCM_CDR (x); | |
1858 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1859 | #ifdef SICP |
1860 | RETURN (*t.lloc); | |
1861 | #else | |
1862 | RETURN (SCM_UNSPECIFIED); | |
1863 | #endif | |
1864 | ||
1865 | ||
1866 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1867 | x = SCM_CDR (x); | |
1868 | proc = SCM_CAR (x); | |
1869 | x = SCM_CDR (x); | |
1870 | x = evalcar (x, env); | |
6dbd0af5 | 1871 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
1872 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
1873 | { | |
1874 | t.arg1 = x; | |
1875 | proc: | |
1876 | if (SCM_CLOSUREP (t.arg1) | |
1877 | /* Only the first definition determines the name. */ | |
1878 | && (scm_procedure_property (t.arg1, scm_i_inner_name) | |
1879 | == SCM_BOOL_F)) | |
1880 | scm_set_procedure_property_x (t.arg1, scm_i_inner_name, proc); | |
1881 | else if (SCM_TYP16 (t.arg1) == scm_tc16_macro | |
1882 | && SCM_CDR (t.arg1) != t.arg1) | |
1883 | { | |
1884 | t.arg1 = SCM_CDR (t.arg1); | |
1885 | goto proc; | |
1886 | } | |
1887 | } | |
6dbd0af5 | 1888 | #endif |
0f2d19dd JB |
1889 | env = SCM_CAR (env); |
1890 | SCM_DEFER_INTS; | |
a23afe53 MD |
1891 | SCM_SETCAR (env, scm_cons (proc, SCM_CAR (env))); |
1892 | SCM_SETCDR (env, scm_cons (x, SCM_CDR (env))); | |
0f2d19dd JB |
1893 | SCM_ALLOW_INTS; |
1894 | RETURN (SCM_UNSPECIFIED); | |
1895 | ||
1896 | ||
0f2d19dd JB |
1897 | /* new syntactic forms go here. */ |
1898 | case (127 & SCM_MAKISYM (0)): | |
1899 | proc = SCM_CAR (x); | |
1900 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1901 | switch SCM_ISYMNUM (proc) | |
1902 | { | |
1903 | #if 0 | |
1904 | case (SCM_ISYMNUM (IM_VREF)): | |
1905 | { | |
1906 | SCM var; | |
1907 | var = SCM_CAR (SCM_CDR (x)); | |
1908 | RETURN (SCM_CDR(var)); | |
1909 | } | |
1910 | case (SCM_ISYMNUM (IM_VSET)): | |
1911 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1912 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1913 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1914 | #endif |
1915 | ||
1916 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1917 | proc = SCM_CDR (x); | |
1918 | proc = EVALCAR (proc, env); | |
1919 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1920 | if (SCM_CLOSUREP (proc)) | |
1921 | { | |
1609038c | 1922 | SCM argl, tl; |
6dbd0af5 | 1923 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1924 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1925 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1926 | #ifdef DEVAL |
1927 | debug.info->a.args = t.arg1; | |
1928 | #endif | |
cf7c17e9 | 1929 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
1930 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
1931 | goto wrongnumargs; | |
1932 | #endif | |
c79450dd | 1933 | ENTER_APPLY; |
1609038c MD |
1934 | /* Copy argument list */ |
1935 | if (SCM_IMP (t.arg1)) | |
1936 | argl = t.arg1; | |
1937 | else | |
1938 | { | |
1939 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
1940 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
1941 | && SCM_CONSP (t.arg1)) | |
1942 | { | |
1943 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
1944 | SCM_UNSPECIFIED)); | |
1945 | tl = SCM_CDR (tl); | |
1946 | } | |
1947 | SCM_SETCDR (tl, t.arg1); | |
1948 | } | |
1949 | ||
1950 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
1951 | x = SCM_CODE (proc); |
1952 | goto cdrxbegin; | |
1953 | } | |
1954 | proc = scm_i_apply; | |
1955 | goto evapply; | |
1956 | ||
1957 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1958 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1959 | if (setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
1960 | { |
1961 | SCM val; | |
1962 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1963 | RETURN (val); |
0f2d19dd JB |
1964 | } |
1965 | proc = SCM_CDR (x); | |
1966 | proc = evalcar (proc, env); | |
1967 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1968 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1969 | ENTER_APPLY; | |
0f2d19dd JB |
1970 | goto evap1; |
1971 | ||
89efbff4 MD |
1972 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
1973 | { | |
1974 | int i, end, mask; | |
1975 | mask = -1; | |
1976 | proc = SCM_CDR (x); | |
1977 | i = 0; | |
1978 | end = SCM_LENGTH (proc); | |
1979 | find_method: | |
1980 | do | |
1981 | { | |
1982 | t.arg1 = SCM_CDDAR (env); | |
1983 | arg2 = SCM_VELTS (proc)[i]; | |
1984 | do | |
1985 | { | |
1986 | if (scm_class_of (SCM_CAR (t.arg1)) != SCM_CAR (arg2)) | |
1987 | goto next_method; | |
1988 | t.arg1 = SCM_CDR (t.arg1); | |
1989 | arg2 = SCM_CDR (arg2); | |
1990 | } | |
1991 | while (SCM_NIMP (t.arg1)); | |
1992 | x = SCM_CAR (arg2); | |
1993 | env = scm_cons (SCM_CAR (env), SCM_CDR (arg2)); | |
1994 | goto begin; | |
1995 | next_method: | |
1996 | i = (i + 1) & mask; | |
1997 | } while (i != end); | |
1998 | scm_memoize_method (x, SCM_CDAR (env)); | |
1999 | goto loop; | |
2000 | ||
2001 | case (SCM_ISYMNUM (SCM_IM_HASH_DISPATCH)): | |
2002 | { | |
2003 | int hashset = SCM_INUM (SCM_CADR (x)); | |
2004 | mask = SCM_INUM (SCM_CADDR (x)); | |
2005 | proc = SCM_CDDDR (x); | |
2006 | i = 0; | |
2007 | t.arg1 = SCM_CDDAR (env); | |
2008 | do | |
2009 | { | |
2010 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1)))[scm_si_hashsets + hashset]; | |
2011 | t.arg1 = SCM_CDR (t.arg1); | |
2012 | } | |
2013 | while (SCM_NIMP (t.arg1)); | |
2014 | i &= mask; | |
2015 | end = i; | |
2016 | } | |
2017 | goto find_method; | |
2018 | } | |
2019 | ||
0f2d19dd JB |
2020 | default: |
2021 | goto badfun; | |
2022 | } | |
2023 | ||
2024 | default: | |
2025 | proc = x; | |
2026 | badfun: | |
f5bf2977 | 2027 | /* scm_everr (x, env,...) */ |
523f5266 GH |
2028 | scm_misc_error (NULL, |
2029 | "Wrong type to apply: %S", | |
2030 | scm_listify (proc, SCM_UNDEFINED)); | |
0f2d19dd JB |
2031 | case scm_tc7_vector: |
2032 | case scm_tc7_wvect: | |
2033 | case scm_tc7_bvect: | |
2034 | case scm_tc7_byvect: | |
2035 | case scm_tc7_svect: | |
2036 | case scm_tc7_ivect: | |
2037 | case scm_tc7_uvect: | |
2038 | case scm_tc7_fvect: | |
2039 | case scm_tc7_dvect: | |
2040 | case scm_tc7_cvect: | |
2041 | #ifdef LONGLONGS | |
2042 | case scm_tc7_llvect: | |
2043 | #endif | |
2044 | case scm_tc7_string: | |
0f2d19dd | 2045 | case scm_tc7_substring: |
0f2d19dd JB |
2046 | case scm_tc7_smob: |
2047 | case scm_tcs_closures: | |
224822be MD |
2048 | #ifdef CCLO |
2049 | case scm_tc7_cclo: | |
2050 | #endif | |
89efbff4 | 2051 | case scm_tc7_pws: |
0f2d19dd JB |
2052 | case scm_tcs_subrs: |
2053 | RETURN (x); | |
2054 | ||
2055 | #ifdef MEMOIZE_LOCALS | |
2056 | case (127 & SCM_ILOC00): | |
2057 | proc = *scm_ilookup (SCM_CAR (x), env); | |
2058 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2059 | #ifndef SCM_RECKLESS |
2060 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2061 | goto checkargs; |
2062 | #endif | |
2063 | #endif | |
2064 | break; | |
2065 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2066 | ||
2067 | ||
2068 | case scm_tcs_cons_gloc: | |
2069 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
aa00bd1e MD |
2070 | if (proc == 0) |
2071 | /* This is a struct implanted in the code, not a gloc. */ | |
2072 | RETURN (x); | |
0f2d19dd | 2073 | SCM_ASRTGO (SCM_NIMP (proc), badfun); |
cf7c17e9 JB |
2074 | #ifndef SCM_RECKLESS |
2075 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2076 | goto checkargs; |
2077 | #endif | |
2078 | #endif | |
2079 | break; | |
2080 | ||
2081 | ||
2082 | case scm_tcs_cons_nimcar: | |
2083 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2084 | { | |
f8769b1d MV |
2085 | #ifdef USE_THREADS |
2086 | t.lloc = scm_lookupcar1 (x, env); | |
2087 | if (t.lloc == NULL) | |
2088 | { | |
2089 | /* we have lost the race, start again. */ | |
2090 | goto dispatch; | |
2091 | } | |
2092 | proc = *t.lloc; | |
2093 | #else | |
0f2d19dd | 2094 | proc = *scm_lookupcar (x, env); |
f8769b1d MV |
2095 | #endif |
2096 | ||
0f2d19dd JB |
2097 | if (SCM_IMP (proc)) |
2098 | { | |
2099 | unmemocar (x, env); | |
2100 | goto badfun; | |
2101 | } | |
2102 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2103 | { | |
2104 | unmemocar (x, env); | |
2105 | ||
2106 | handle_a_macro: | |
368bf056 | 2107 | #ifdef DEVAL |
7c354052 MD |
2108 | /* Set a flag during macro expansion so that macro |
2109 | application frames can be deleted from the backtrace. */ | |
2110 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2111 | #endif |
f8769b1d MV |
2112 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2113 | scm_cons (env, scm_listofnull)); | |
2114 | ||
7c354052 MD |
2115 | #ifdef DEVAL |
2116 | SCM_CLEAR_MACROEXP (debug); | |
2117 | #endif | |
0f2d19dd JB |
2118 | switch ((int) (SCM_CAR (proc) >> 16)) |
2119 | { | |
2120 | case 2: | |
2121 | if (scm_ilength (t.arg1) <= 0) | |
2122 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2123 | #ifdef DEVAL |
2124 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2125 | { | |
f8769b1d | 2126 | |
6dbd0af5 MD |
2127 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2128 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2129 | /* Prevent memoizing result of define macro */ | |
2130 | { | |
2131 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2132 | scm_set_source_properties_x (debug.info->e.exp, | |
2133 | scm_source_properties (x)); | |
2134 | } | |
2135 | #endif | |
2136 | SCM_DEFER_INTS; | |
a23afe53 MD |
2137 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2138 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2139 | SCM_ALLOW_INTS; |
2140 | goto dispatch; | |
2141 | } | |
2142 | /* Prevent memoizing of debug info expression. */ | |
2143 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2144 | scm_set_source_properties_x (debug.info->e.exp, | |
2145 | scm_source_properties (x)); | |
2146 | #endif | |
0f2d19dd | 2147 | SCM_DEFER_INTS; |
a23afe53 MD |
2148 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2149 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2150 | SCM_ALLOW_INTS; |
6dbd0af5 | 2151 | goto loopnoap; |
0f2d19dd JB |
2152 | case 1: |
2153 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2154 | goto loopnoap; |
0f2d19dd JB |
2155 | case 0: |
2156 | RETURN (t.arg1); | |
2157 | } | |
2158 | } | |
2159 | } | |
2160 | else | |
2161 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2162 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2163 | #ifndef SCM_RECKLESS |
2164 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2165 | checkargs: |
2166 | #endif | |
2167 | if (SCM_CLOSUREP (proc)) | |
2168 | { | |
2169 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2170 | t.arg1 = SCM_CDR (x); | |
2171 | while (SCM_NIMP (arg2)) | |
2172 | { | |
2173 | if (SCM_NCONSP (arg2)) | |
2174 | goto evapply; | |
2175 | if (SCM_IMP (t.arg1)) | |
2176 | goto umwrongnumargs; | |
2177 | arg2 = SCM_CDR (arg2); | |
2178 | t.arg1 = SCM_CDR (t.arg1); | |
2179 | } | |
2180 | if (SCM_NNULLP (t.arg1)) | |
2181 | goto umwrongnumargs; | |
2182 | } | |
2183 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2184 | goto handle_a_macro; | |
2185 | #endif | |
2186 | } | |
2187 | ||
2188 | ||
6dbd0af5 MD |
2189 | evapply: |
2190 | PREP_APPLY (proc, SCM_EOL); | |
2191 | if (SCM_NULLP (SCM_CDR (x))) { | |
2192 | ENTER_APPLY; | |
89efbff4 | 2193 | evap0: |
0f2d19dd JB |
2194 | switch (SCM_TYP7 (proc)) |
2195 | { /* no arguments given */ | |
2196 | case scm_tc7_subr_0: | |
2197 | RETURN (SCM_SUBRF (proc) ()); | |
2198 | case scm_tc7_subr_1o: | |
2199 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2200 | case scm_tc7_lsubr: | |
2201 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2202 | case scm_tc7_rpsubr: | |
2203 | RETURN (SCM_BOOL_T); | |
2204 | case scm_tc7_asubr: | |
2205 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2206 | #ifdef CCLO |
0f2d19dd JB |
2207 | case scm_tc7_cclo: |
2208 | t.arg1 = proc; | |
2209 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2210 | #ifdef DEVAL |
2211 | debug.info->a.proc = proc; | |
2212 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2213 | #endif | |
0f2d19dd | 2214 | goto evap1; |
6dbd0af5 | 2215 | #endif |
89efbff4 MD |
2216 | case scm_tc7_pws: |
2217 | proc = SCM_PROCEDURE (proc); | |
2218 | #ifdef DEVAL | |
2219 | debug.info->a.proc = proc; | |
2220 | #endif | |
2221 | goto evap0; | |
0f2d19dd JB |
2222 | case scm_tcs_closures: |
2223 | x = SCM_CODE (proc); | |
e2806c10 | 2224 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2225 | goto cdrxbegin; |
da7f71d7 | 2226 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2227 | if (!SCM_I_OPERATORP (proc)) |
2228 | goto badfun; | |
2229 | else | |
da7f71d7 MD |
2230 | { |
2231 | x = (SCM_I_ENTITYP (proc) | |
2232 | ? SCM_ENTITY_PROC_0 (proc) | |
2233 | : SCM_OPERATOR_PROC_0 (proc)); | |
2234 | if (SCM_NIMP (x)) | |
33b97402 MD |
2235 | { |
2236 | if (SCM_TYP7 (x) == scm_tc7_subr_1) | |
2237 | RETURN (SCM_SUBRF (x) (proc)) | |
2238 | else if (SCM_CLOSUREP (x)) | |
2239 | { | |
2240 | t.arg1 = proc; | |
2241 | proc = x; | |
da7f71d7 | 2242 | #ifdef DEVAL |
33b97402 MD |
2243 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); |
2244 | debug.info->a.proc = proc; | |
da7f71d7 | 2245 | #endif |
33b97402 MD |
2246 | goto clos1; |
2247 | } | |
2248 | } | |
da7f71d7 MD |
2249 | /* Fall through. */ |
2250 | } | |
0f2d19dd JB |
2251 | case scm_tc7_contin: |
2252 | case scm_tc7_subr_1: | |
2253 | case scm_tc7_subr_2: | |
2254 | case scm_tc7_subr_2o: | |
2255 | case scm_tc7_cxr: | |
2256 | case scm_tc7_subr_3: | |
2257 | case scm_tc7_lsubr_2: | |
2258 | umwrongnumargs: | |
2259 | unmemocar (x, env); | |
2260 | wrongnumargs: | |
f5bf2977 GH |
2261 | /* scm_everr (x, env,...) */ |
2262 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2263 | default: |
2264 | /* handle macros here */ | |
2265 | goto badfun; | |
2266 | } | |
6dbd0af5 | 2267 | } |
0f2d19dd JB |
2268 | |
2269 | /* must handle macros by here */ | |
2270 | x = SCM_CDR (x); | |
cf7c17e9 | 2271 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2272 | if (SCM_IMP (x)) |
2273 | goto wrongnumargs; | |
680ed4a8 MD |
2274 | else if (SCM_CONSP (x)) |
2275 | { | |
2276 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2277 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2278 | else |
2279 | t.arg1 = EVALCELLCAR (x, env); | |
2280 | } | |
2281 | else if (SCM_TYP3 (x) == 1) | |
2282 | { | |
2283 | if ((t.arg1 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2284 | t.arg1 = SCM_CAR (x); /* struct planted in code */ | |
2285 | } | |
2286 | else | |
2287 | goto wrongnumargs; | |
2288 | #else | |
0f2d19dd | 2289 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2290 | #endif |
6dbd0af5 MD |
2291 | #ifdef DEVAL |
2292 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2293 | #endif | |
0f2d19dd JB |
2294 | x = SCM_CDR (x); |
2295 | if (SCM_NULLP (x)) | |
2296 | { | |
6dbd0af5 | 2297 | ENTER_APPLY; |
0f2d19dd JB |
2298 | evap1: |
2299 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2300 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2301 | case scm_tc7_subr_2o: |
2302 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2303 | case scm_tc7_subr_1: | |
2304 | case scm_tc7_subr_1o: | |
2305 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2306 | case scm_tc7_cxr: | |
2307 | #ifdef SCM_FLOATS | |
2308 | if (SCM_SUBRF (proc)) | |
2309 | { | |
2310 | if (SCM_INUMP (t.arg1)) | |
2311 | { | |
2312 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2313 | 0.0)); | |
2314 | } | |
2315 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2316 | if (SCM_REALP (t.arg1)) | |
2317 | { | |
2318 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2319 | } | |
2320 | #ifdef SCM_BIGDIG | |
2321 | if (SCM_BIGP (t.arg1)) | |
2322 | { | |
2323 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2324 | } | |
2325 | #endif | |
2326 | floerr: | |
2327 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2328 | } | |
2329 | #endif | |
2330 | proc = (SCM) SCM_SNAME (proc); | |
2331 | { | |
2332 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2333 | while ('c' != *--chrs) | |
2334 | { | |
2335 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
2336 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2337 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2338 | } | |
2339 | RETURN (t.arg1); | |
2340 | } | |
2341 | case scm_tc7_rpsubr: | |
2342 | RETURN (SCM_BOOL_T); | |
2343 | case scm_tc7_asubr: | |
2344 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2345 | case scm_tc7_lsubr: | |
2346 | #ifdef DEVAL | |
6dbd0af5 | 2347 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2348 | #else |
2349 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2350 | #endif | |
6dbd0af5 | 2351 | #ifdef CCLO |
0f2d19dd JB |
2352 | case scm_tc7_cclo: |
2353 | arg2 = t.arg1; | |
2354 | t.arg1 = proc; | |
2355 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2356 | #ifdef DEVAL |
2357 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2358 | debug.info->a.proc = proc; | |
2359 | #endif | |
0f2d19dd | 2360 | goto evap2; |
6dbd0af5 | 2361 | #endif |
89efbff4 MD |
2362 | case scm_tc7_pws: |
2363 | proc = SCM_PROCEDURE (proc); | |
2364 | #ifdef DEVAL | |
2365 | debug.info->a.proc = proc; | |
2366 | #endif | |
2367 | goto evap1; | |
0f2d19dd | 2368 | case scm_tcs_closures: |
da7f71d7 | 2369 | clos1: |
0f2d19dd JB |
2370 | x = SCM_CODE (proc); |
2371 | #ifdef DEVAL | |
e2806c10 | 2372 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2373 | #else |
e2806c10 | 2374 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2375 | #endif |
2376 | goto cdrxbegin; | |
65e41721 MD |
2377 | case scm_tc7_contin: |
2378 | scm_call_continuation (proc, t.arg1); | |
0c32d76c | 2379 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2380 | if (!SCM_I_OPERATORP (proc)) |
2381 | goto badfun; | |
2382 | else | |
0c32d76c | 2383 | { |
da7f71d7 MD |
2384 | x = (SCM_I_ENTITYP (proc) |
2385 | ? SCM_ENTITY_PROC_1 (proc) | |
2386 | : SCM_OPERATOR_PROC_1 (proc)); | |
2387 | if (SCM_NIMP (x)) | |
33b97402 MD |
2388 | { |
2389 | if (SCM_TYP7 (x) == scm_tc7_subr_2) | |
2390 | RETURN (SCM_SUBRF (x) (proc, t.arg1)) | |
2391 | else if (SCM_CLOSUREP (x)) | |
2392 | { | |
2393 | arg2 = t.arg1; | |
2394 | t.arg1 = proc; | |
2395 | proc = x; | |
0c32d76c | 2396 | #ifdef DEVAL |
33b97402 MD |
2397 | debug.info->a.args = scm_cons (t.arg1, |
2398 | debug.info->a.args); | |
2399 | debug.info->a.proc = proc; | |
0c32d76c | 2400 | #endif |
33b97402 MD |
2401 | goto clos2; |
2402 | } | |
2403 | } | |
0c32d76c MD |
2404 | /* Fall through. */ |
2405 | } | |
0f2d19dd JB |
2406 | case scm_tc7_subr_2: |
2407 | case scm_tc7_subr_0: | |
2408 | case scm_tc7_subr_3: | |
2409 | case scm_tc7_lsubr_2: | |
2410 | goto wrongnumargs; | |
2411 | default: | |
2412 | goto badfun; | |
2413 | } | |
2414 | } | |
cf7c17e9 | 2415 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2416 | if (SCM_IMP (x)) |
2417 | goto wrongnumargs; | |
680ed4a8 MD |
2418 | else if (SCM_CONSP (x)) |
2419 | { | |
2420 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2421 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2422 | else |
2423 | arg2 = EVALCELLCAR (x, env); | |
2424 | } | |
2425 | else if (SCM_TYP3 (x) == 1) | |
2426 | { | |
2427 | if ((arg2 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2428 | arg2 = SCM_CAR (x); /* struct planted in code */ | |
2429 | } | |
2430 | else | |
2431 | goto wrongnumargs; | |
2432 | #else | |
2433 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2434 | #endif |
2435 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2436 | #ifdef DEVAL |
2437 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2438 | #endif | |
0f2d19dd JB |
2439 | x = SCM_CDR (x); |
2440 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2441 | ENTER_APPLY; |
0f2d19dd JB |
2442 | #ifdef CCLO |
2443 | evap2: | |
2444 | #endif | |
6dbd0af5 MD |
2445 | switch (SCM_TYP7 (proc)) |
2446 | { /* have two arguments */ | |
2447 | case scm_tc7_subr_2: | |
2448 | case scm_tc7_subr_2o: | |
2449 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2450 | case scm_tc7_lsubr: | |
0f2d19dd | 2451 | #ifdef DEVAL |
6dbd0af5 MD |
2452 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2453 | #else | |
2454 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2455 | #endif |
6dbd0af5 MD |
2456 | case scm_tc7_lsubr_2: |
2457 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2458 | case scm_tc7_rpsubr: | |
2459 | case scm_tc7_asubr: | |
2460 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2461 | #ifdef CCLO | |
2462 | cclon: | |
2463 | case scm_tc7_cclo: | |
0f2d19dd | 2464 | #ifdef DEVAL |
6dbd0af5 MD |
2465 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2466 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2467 | #else |
6dbd0af5 MD |
2468 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2469 | scm_cons2 (t.arg1, arg2, | |
680ed4a8 | 2470 | scm_cons (scm_eval_args (x, env, proc), |
da7f71d7 | 2471 | SCM_EOL)))); |
0f2d19dd | 2472 | #endif |
6dbd0af5 MD |
2473 | /* case scm_tc7_cclo: |
2474 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2475 | arg2 = t.arg1; | |
2476 | t.arg1 = proc; | |
2477 | proc = SCM_CCLO_SUBR(proc); | |
2478 | goto evap3; */ | |
2479 | #endif | |
89efbff4 MD |
2480 | case scm_tc7_pws: |
2481 | proc = SCM_PROCEDURE (proc); | |
2482 | #ifdef DEVAL | |
2483 | debug.info->a.proc = proc; | |
2484 | #endif | |
2485 | goto evap2; | |
0c32d76c | 2486 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2487 | if (!SCM_I_OPERATORP (proc)) |
2488 | goto badfun; | |
2489 | else | |
0c32d76c | 2490 | { |
da7f71d7 MD |
2491 | x = (SCM_I_ENTITYP (proc) |
2492 | ? SCM_ENTITY_PROC_2 (proc) | |
2493 | : SCM_OPERATOR_PROC_2 (proc)); | |
2494 | if (SCM_NIMP (x)) | |
33b97402 MD |
2495 | { |
2496 | if (SCM_TYP7 (x) == scm_tc7_subr_3) | |
2497 | RETURN (SCM_SUBRF (x) (proc, t.arg1, arg2)) | |
2498 | else if (SCM_CLOSUREP (x)) | |
2499 | { | |
0c32d76c | 2500 | #ifdef DEVAL |
33b97402 MD |
2501 | SCM_SET_ARGSREADY (debug); |
2502 | debug.info->a.args = scm_cons (proc, | |
2503 | debug.info->a.args); | |
2504 | debug.info->a.proc = x; | |
2505 | #endif | |
2506 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (x)), | |
2507 | scm_cons2 (proc, t.arg1, | |
65e41721 | 2508 | scm_cons (arg2, SCM_EOL)), |
33b97402 MD |
2509 | SCM_ENV (x)); |
2510 | x = SCM_CODE (x); | |
2511 | goto cdrxbegin; | |
2512 | } | |
2513 | } | |
0c32d76c MD |
2514 | /* Fall through. */ |
2515 | } | |
6dbd0af5 MD |
2516 | case scm_tc7_subr_0: |
2517 | case scm_tc7_cxr: | |
2518 | case scm_tc7_subr_1o: | |
2519 | case scm_tc7_subr_1: | |
2520 | case scm_tc7_subr_3: | |
2521 | case scm_tc7_contin: | |
2522 | goto wrongnumargs; | |
2523 | default: | |
2524 | goto badfun; | |
2525 | case scm_tcs_closures: | |
0c32d76c | 2526 | clos2: |
0f2d19dd | 2527 | #ifdef DEVAL |
da7f71d7 MD |
2528 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2529 | debug.info->a.args, | |
2530 | SCM_ENV (proc)); | |
0f2d19dd | 2531 | #else |
da7f71d7 MD |
2532 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2533 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2534 | #endif |
6dbd0af5 MD |
2535 | x = SCM_CODE (proc); |
2536 | goto cdrxbegin; | |
2537 | } | |
0f2d19dd | 2538 | } |
cf7c17e9 | 2539 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2540 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2541 | goto wrongnumargs; | |
2542 | #endif | |
0f2d19dd | 2543 | #ifdef DEVAL |
6dbd0af5 | 2544 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2545 | scm_deval_args (x, env, proc, |
2546 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2547 | #endif |
6dbd0af5 | 2548 | ENTER_APPLY; |
89efbff4 | 2549 | evap3: |
6dbd0af5 MD |
2550 | switch (SCM_TYP7 (proc)) |
2551 | { /* have 3 or more arguments */ | |
0f2d19dd | 2552 | #ifdef DEVAL |
6dbd0af5 MD |
2553 | case scm_tc7_subr_3: |
2554 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2555 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2556 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 2557 | case scm_tc7_asubr: |
399dedcc MD |
2558 | #ifdef BUILTIN_RPASUBR |
2559 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2560 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2561 | do |
2562 | { | |
2563 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
2564 | arg2 = SCM_CDR (arg2); | |
2565 | } | |
2566 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
2567 | RETURN (t.arg1) |
2568 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2569 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2570 | #ifdef BUILTIN_RPASUBR |
2571 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2572 | RETURN (SCM_BOOL_F) | |
2573 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2574 | do |
2575 | { | |
2576 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
2577 | RETURN (SCM_BOOL_F) | |
2578 | arg2 = SCM_CAR (t.arg1); | |
2579 | t.arg1 = SCM_CDR (t.arg1); | |
2580 | } | |
2581 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
2582 | RETURN (SCM_BOOL_T) |
2583 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
2584 | RETURN (SCM_APPLY (proc, t.arg1, |
2585 | scm_acons (arg2, | |
2586 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
2587 | SCM_EOL))) | |
71d3aa6d | 2588 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 2589 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
2590 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2591 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
2592 | case scm_tc7_lsubr: |
2593 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2594 | #ifdef CCLO |
6dbd0af5 MD |
2595 | case scm_tc7_cclo: |
2596 | goto cclon; | |
0f2d19dd | 2597 | #endif |
89efbff4 MD |
2598 | case scm_tc7_pws: |
2599 | proc = SCM_PROCEDURE (proc); | |
2600 | debug.info->a.proc = proc; | |
2601 | goto evap3; | |
6dbd0af5 | 2602 | case scm_tcs_closures: |
b7ff98dd | 2603 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2604 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2605 | debug.info->a.args, |
2606 | SCM_ENV (proc)); | |
2607 | x = SCM_CODE (proc); | |
2608 | goto cdrxbegin; | |
2609 | #else /* DEVAL */ | |
2610 | case scm_tc7_subr_3: | |
2611 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2612 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2613 | case scm_tc7_asubr: | |
399dedcc | 2614 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
2615 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
2616 | do | |
2617 | { | |
2618 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2619 | x = SCM_CDR(x); | |
2620 | } | |
2621 | while (SCM_NIMP (x)); | |
399dedcc MD |
2622 | RETURN (t.arg1) |
2623 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2624 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2625 | #ifdef BUILTIN_RPASUBR |
2626 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2627 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
2628 | do |
2629 | { | |
2630 | t.arg1 = EVALCAR (x, env); | |
2631 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
2632 | RETURN (SCM_BOOL_F) | |
2633 | arg2 = t.arg1; | |
2634 | x = SCM_CDR (x); | |
2635 | } | |
2636 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
2637 | RETURN (SCM_BOOL_T) |
2638 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 2639 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
2640 | scm_acons (arg2, |
2641 | scm_eval_args (x, env, proc), | |
2642 | SCM_EOL))); | |
71d3aa6d | 2643 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 2644 | case scm_tc7_lsubr_2: |
680ed4a8 | 2645 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 2646 | case scm_tc7_lsubr: |
680ed4a8 MD |
2647 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
2648 | arg2, | |
2649 | scm_eval_args (x, env, proc)))); | |
0f2d19dd | 2650 | #ifdef CCLO |
6dbd0af5 MD |
2651 | case scm_tc7_cclo: |
2652 | goto cclon; | |
0f2d19dd | 2653 | #endif |
89efbff4 MD |
2654 | case scm_tc7_pws: |
2655 | proc = SCM_PROCEDURE (proc); | |
2656 | goto evap3; | |
6dbd0af5 MD |
2657 | case scm_tcs_closures: |
2658 | #ifdef DEVAL | |
b7ff98dd | 2659 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2660 | #endif |
e2806c10 | 2661 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
2662 | scm_cons2 (t.arg1, |
2663 | arg2, | |
2664 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
2665 | SCM_ENV (proc)); |
2666 | x = SCM_CODE (proc); | |
2667 | goto cdrxbegin; | |
0f2d19dd | 2668 | #endif /* DEVAL */ |
0c32d76c | 2669 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2670 | if (!SCM_I_OPERATORP (proc)) |
2671 | goto badfun; | |
2672 | else | |
da7f71d7 MD |
2673 | { |
2674 | SCM p = (SCM_I_ENTITYP (proc) | |
2675 | ? SCM_ENTITY_PROC_3 (proc) | |
2676 | : SCM_OPERATOR_PROC_3 (proc)); | |
2677 | if (SCM_NIMP (p)) | |
33b97402 MD |
2678 | { |
2679 | if (SCM_TYP7 (p) == scm_tc7_lsubr_2) | |
da7f71d7 | 2680 | #ifdef DEVAL |
33b97402 MD |
2681 | RETURN (SCM_SUBRF (p) (proc, t.arg1, |
2682 | scm_cons (arg2, SCM_CDDR (debug.info->a.args)))) | |
da7f71d7 | 2683 | #else |
33b97402 MD |
2684 | RETURN (SCM_SUBRF (p) (proc, t.arg1, |
2685 | scm_cons (arg2, | |
680ed4a8 | 2686 | scm_eval_args (x, env, proc)))) |
da7f71d7 | 2687 | #endif |
33b97402 MD |
2688 | else if (SCM_CLOSUREP (p)) |
2689 | { | |
da7f71d7 | 2690 | #ifdef DEVAL |
33b97402 MD |
2691 | SCM_SET_ARGSREADY (debug); |
2692 | debug.info->a.args = scm_cons (proc, debug.info->a.args); | |
2693 | debug.info->a.proc = p; | |
2694 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)), | |
2695 | scm_cons2 (proc, t.arg1, | |
2696 | scm_cons (arg2, | |
2697 | SCM_CDDDR (debug.info->a.args))), | |
2698 | SCM_ENV (p)); | |
da7f71d7 | 2699 | #else |
33b97402 MD |
2700 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)), |
2701 | scm_cons2 (proc, t.arg1, | |
2702 | scm_cons (arg2, | |
680ed4a8 | 2703 | scm_eval_args (x, env, proc))), |
33b97402 MD |
2704 | SCM_ENV (p)); |
2705 | #endif | |
2706 | x = SCM_CODE (p); | |
2707 | goto cdrxbegin; | |
2708 | } | |
2709 | } | |
da7f71d7 MD |
2710 | /* Fall through. */ |
2711 | } | |
6dbd0af5 MD |
2712 | case scm_tc7_subr_2: |
2713 | case scm_tc7_subr_1o: | |
2714 | case scm_tc7_subr_2o: | |
2715 | case scm_tc7_subr_0: | |
2716 | case scm_tc7_cxr: | |
2717 | case scm_tc7_subr_1: | |
2718 | case scm_tc7_contin: | |
2719 | goto wrongnumargs; | |
2720 | default: | |
2721 | goto badfun; | |
2722 | } | |
0f2d19dd JB |
2723 | } |
2724 | #ifdef DEVAL | |
6dbd0af5 | 2725 | exit: |
b6d75948 | 2726 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 2727 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2728 | { |
b7ff98dd MD |
2729 | SCM_CLEAR_TRACED_FRAME (debug); |
2730 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2731 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2732 | else |
2733 | { | |
2734 | scm_make_cont (&t.arg1); | |
ca6ef71a | 2735 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
2736 | { |
2737 | proc = SCM_THROW_VALUE (t.arg1); | |
2738 | goto ret; | |
2739 | } | |
2740 | } | |
2741 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2742 | } | |
2743 | ret: | |
1646d37b | 2744 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2745 | return proc; |
2746 | #endif | |
2747 | } | |
2748 | ||
6dbd0af5 MD |
2749 | |
2750 | /* SECTION: This code is compiled once. | |
2751 | */ | |
2752 | ||
0f2d19dd JB |
2753 | #ifndef DEVAL |
2754 | ||
82a2622a | 2755 | /* This code processes the arguments to apply: |
b145c172 JB |
2756 | |
2757 | (apply PROC ARG1 ... ARGS) | |
2758 | ||
82a2622a JB |
2759 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
2760 | ... arguments onto the front of ARGS, and returns the resulting | |
2761 | list. Note that ARGS is a list; thus, the argument to this | |
2762 | function is a list whose last element is a list. | |
2763 | ||
2764 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
2765 | result. apply:nconc2last takes care of building the list of |
2766 | arguments, given (ARG1 ... ARGS). | |
2767 | ||
82a2622a JB |
2768 | Rather than do new consing, apply:nconc2last destroys its argument. |
2769 | On that topic, this code came into my care with the following | |
2770 | beautifully cryptic comment on that topic: "This will only screw | |
2771 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
2772 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 2773 | |
0f2d19dd | 2774 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); |
1cc91f1b | 2775 | |
0f2d19dd JB |
2776 | SCM |
2777 | scm_nconc2last (lst) | |
2778 | SCM lst; | |
0f2d19dd JB |
2779 | { |
2780 | SCM *lloc; | |
b145c172 | 2781 | SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2782 | lloc = &lst; |
2783 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 2784 | lloc = SCM_CDRLOC (*lloc); |
b145c172 | 2785 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2786 | *lloc = SCM_CAR (*lloc); |
2787 | return lst; | |
2788 | } | |
2789 | ||
2790 | #endif /* !DEVAL */ | |
2791 | ||
6dbd0af5 MD |
2792 | |
2793 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2794 | * It is compiled twice. | |
2795 | */ | |
2796 | ||
0f2d19dd | 2797 | #if 0 |
1cc91f1b | 2798 | |
0f2d19dd JB |
2799 | SCM |
2800 | scm_apply (proc, arg1, args) | |
2801 | SCM proc; | |
2802 | SCM arg1; | |
2803 | SCM args; | |
0f2d19dd JB |
2804 | {} |
2805 | #endif | |
2806 | ||
2807 | #if 0 | |
1cc91f1b | 2808 | |
0f2d19dd JB |
2809 | SCM |
2810 | scm_dapply (proc, arg1, args) | |
2811 | SCM proc; | |
2812 | SCM arg1; | |
2813 | SCM args; | |
0f2d19dd JB |
2814 | {} |
2815 | #endif | |
2816 | ||
1cc91f1b | 2817 | |
82a2622a JB |
2818 | /* Apply a function to a list of arguments. |
2819 | ||
2820 | This function is exported to the Scheme level as taking two | |
2821 | required arguments and a tail argument, as if it were: | |
2822 | (lambda (proc arg1 . args) ...) | |
2823 | Thus, if you just have a list of arguments to pass to a procedure, | |
2824 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
2825 | args, pass the first as ARG1, then cons any remaining fixed args | |
2826 | onto the front of your argument list, and pass that as ARGS. */ | |
2827 | ||
0f2d19dd JB |
2828 | SCM |
2829 | SCM_APPLY (proc, arg1, args) | |
2830 | SCM proc; | |
2831 | SCM arg1; | |
2832 | SCM args; | |
0f2d19dd JB |
2833 | { |
2834 | #ifdef DEBUG_EXTENSIONS | |
2835 | #ifdef DEVAL | |
6dbd0af5 | 2836 | scm_debug_frame debug; |
c0ab1b8d | 2837 | scm_debug_info debug_vect_body; |
1646d37b | 2838 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2839 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 2840 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
2841 | debug.vect[0].a.proc = proc; |
2842 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2843 | scm_last_debug_frame = &debug; |
0f2d19dd | 2844 | #else |
b7ff98dd | 2845 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2846 | return scm_dapply (proc, arg1, args); |
2847 | #endif | |
2848 | #endif | |
2849 | ||
2850 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
2851 | |
2852 | /* If ARGS is the empty list, then we're calling apply with only two | |
2853 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
2854 | the case, futz with things so that ARG1 is the first argument to | |
2855 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
2856 | rest. |
2857 | ||
2858 | Setting the debug apply frame args this way is pretty messy. | |
2859 | Perhaps we should store arg1 and args directly in the frame as | |
2860 | received, and let scm_frame_arguments unpack them, because that's | |
2861 | a relatively rare operation. This works for now; if the Guile | |
2862 | developer archives are still around, see Mikael's post of | |
2863 | 11-Apr-97. */ | |
0f2d19dd JB |
2864 | if (SCM_NULLP (args)) |
2865 | { | |
2866 | if (SCM_NULLP (arg1)) | |
30000774 JB |
2867 | { |
2868 | arg1 = SCM_UNDEFINED; | |
2869 | #ifdef DEVAL | |
2870 | debug.vect[0].a.args = SCM_EOL; | |
2871 | #endif | |
2872 | } | |
0f2d19dd JB |
2873 | else |
2874 | { | |
30000774 JB |
2875 | #ifdef DEVAL |
2876 | debug.vect[0].a.args = arg1; | |
2877 | #endif | |
0f2d19dd JB |
2878 | args = SCM_CDR (arg1); |
2879 | arg1 = SCM_CAR (arg1); | |
2880 | } | |
2881 | } | |
2882 | else | |
2883 | { | |
82a2622a | 2884 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 2885 | args = scm_nconc2last (args); |
30000774 JB |
2886 | #ifdef DEVAL |
2887 | debug.vect[0].a.args = scm_cons (arg1, args); | |
2888 | #endif | |
0f2d19dd | 2889 | } |
0f2d19dd | 2890 | #ifdef DEVAL |
b6d75948 | 2891 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
2892 | { |
2893 | SCM tmp; | |
b7ff98dd | 2894 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 2895 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2896 | else |
2897 | { | |
2898 | scm_make_cont (&tmp); | |
ca6ef71a | 2899 | if (setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
2900 | goto entap; |
2901 | } | |
2902 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2903 | } | |
2904 | entap: | |
2905 | ENTER_APPLY; | |
2906 | #endif | |
2907 | #ifdef CCLO | |
2908 | tail: | |
0f2d19dd JB |
2909 | #endif |
2910 | switch (SCM_TYP7 (proc)) | |
2911 | { | |
2912 | case scm_tc7_subr_2o: | |
2913 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2914 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2915 | case scm_tc7_subr_2: | |
269861c7 MD |
2916 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
2917 | wrongnumargs); | |
0f2d19dd JB |
2918 | args = SCM_CAR (args); |
2919 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2920 | case scm_tc7_subr_0: | |
2921 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2922 | RETURN (SCM_SUBRF (proc) ()) | |
2923 | case scm_tc7_subr_1: | |
2924 | case scm_tc7_subr_1o: | |
2925 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2926 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2927 | case scm_tc7_cxr: | |
2928 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2929 | #ifdef SCM_FLOATS | |
2930 | if (SCM_SUBRF (proc)) | |
2931 | { | |
6dbd0af5 MD |
2932 | if (SCM_INUMP (arg1)) |
2933 | { | |
2934 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2935 | } | |
0f2d19dd | 2936 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2937 | if (SCM_REALP (arg1)) |
2938 | { | |
2939 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2940 | } | |
0f2d19dd JB |
2941 | #ifdef SCM_BIGDIG |
2942 | if SCM_BIGP | |
2943 | (arg1) | |
2944 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) | |
2945 | #endif | |
2946 | floerr: | |
2947 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2948 | } | |
2949 | #endif | |
2950 | proc = (SCM) SCM_SNAME (proc); | |
2951 | { | |
2952 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2953 | while ('c' != *--chrs) | |
2954 | { | |
2955 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2956 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2957 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2958 | } | |
2959 | RETURN (arg1) | |
2960 | } | |
2961 | case scm_tc7_subr_3: | |
2962 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2963 | case scm_tc7_lsubr: | |
2964 | #ifdef DEVAL | |
6dbd0af5 | 2965 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2966 | #else |
2967 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2968 | #endif | |
2969 | case scm_tc7_lsubr_2: | |
2970 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2971 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2972 | case scm_tc7_asubr: | |
2973 | if (SCM_NULLP (args)) | |
2974 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2975 | while (SCM_NIMP (args)) | |
2976 | { | |
2977 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2978 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2979 | args = SCM_CDR (args); | |
2980 | } | |
2981 | RETURN (arg1); | |
2982 | case scm_tc7_rpsubr: | |
2983 | if (SCM_NULLP (args)) | |
2984 | RETURN (SCM_BOOL_T); | |
2985 | while (SCM_NIMP (args)) | |
2986 | { | |
2987 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2988 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2989 | RETURN (SCM_BOOL_F); | |
2990 | arg1 = SCM_CAR (args); | |
2991 | args = SCM_CDR (args); | |
2992 | } | |
2993 | RETURN (SCM_BOOL_T); | |
2994 | case scm_tcs_closures: | |
2995 | #ifdef DEVAL | |
6dbd0af5 | 2996 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2997 | #else |
2998 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2999 | #endif | |
cf7c17e9 | 3000 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3001 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3002 | goto wrongnumargs; | |
3003 | #endif | |
1609038c MD |
3004 | |
3005 | /* Copy argument list */ | |
3006 | if (SCM_IMP (arg1)) | |
3007 | args = arg1; | |
3008 | else | |
3009 | { | |
3010 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
3011 | while (SCM_NIMP (arg1 = SCM_CDR (arg1)) | |
3012 | && SCM_CONSP (arg1)) | |
3013 | { | |
3014 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3015 | SCM_UNSPECIFIED)); | |
3016 | tl = SCM_CDR (tl); | |
3017 | } | |
3018 | SCM_SETCDR (tl, arg1); | |
3019 | } | |
3020 | ||
3021 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
0f2d19dd JB |
3022 | proc = SCM_CODE (proc); |
3023 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
3024 | arg1 = EVALCAR (proc, args); | |
3025 | RETURN (arg1); | |
3026 | case scm_tc7_contin: | |
3027 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3028 | scm_call_continuation (proc, arg1); | |
3029 | #ifdef CCLO | |
3030 | case scm_tc7_cclo: | |
3031 | #ifdef DEVAL | |
6dbd0af5 MD |
3032 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3033 | arg1 = proc; | |
3034 | proc = SCM_CCLO_SUBR (proc); | |
3035 | debug.vect[0].a.proc = proc; | |
3036 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3037 | #else |
3038 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3039 | arg1 = proc; |
3040 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3041 | #endif |
0f2d19dd JB |
3042 | goto tail; |
3043 | #endif | |
89efbff4 MD |
3044 | case scm_tc7_pws: |
3045 | proc = SCM_PROCEDURE (proc); | |
3046 | #ifdef DEVAL | |
3047 | debug.vect[0].a.proc = proc; | |
3048 | #endif | |
3049 | goto tail; | |
0c32d76c | 3050 | case scm_tcs_cons_gloc: |
9b07e212 MD |
3051 | if (!SCM_I_OPERATORP (proc)) |
3052 | goto badproc; | |
3053 | else | |
da7f71d7 MD |
3054 | { |
3055 | #ifdef DEVAL | |
3056 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3057 | #else | |
3058 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3059 | #endif | |
3060 | arg1 = proc; | |
3061 | proc = (SCM_NULLP (args) | |
3062 | ? (SCM_I_ENTITYP (proc) | |
3063 | ? SCM_ENTITY_PROC_0 (proc) | |
3064 | : SCM_OPERATOR_PROC_0 (proc)) | |
3065 | : SCM_NULLP (SCM_CDR (args)) | |
3066 | ? (SCM_I_ENTITYP (proc) | |
3067 | ? SCM_ENTITY_PROC_1 (proc) | |
3068 | : SCM_OPERATOR_PROC_1 (proc)) | |
3069 | : SCM_NULLP (SCM_CDDR (args)) | |
3070 | ? (SCM_I_ENTITYP (proc) | |
3071 | ? SCM_ENTITY_PROC_2 (proc) | |
3072 | : SCM_OPERATOR_PROC_2 (proc)) | |
3073 | : (SCM_I_ENTITYP (proc) | |
3074 | ? SCM_ENTITY_PROC_3 (proc) | |
3075 | : SCM_OPERATOR_PROC_3 (proc))); | |
3076 | #ifdef DEVAL | |
3077 | debug.vect[0].a.proc = proc; | |
3078 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3079 | #endif | |
3080 | goto tail; | |
3081 | } | |
0f2d19dd | 3082 | wrongnumargs: |
f5bf2977 | 3083 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3084 | default: |
3085 | badproc: | |
3086 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3087 | RETURN (arg1); | |
3088 | } | |
3089 | #ifdef DEVAL | |
6dbd0af5 | 3090 | exit: |
b6d75948 | 3091 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3092 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3093 | { |
b7ff98dd MD |
3094 | SCM_CLEAR_TRACED_FRAME (debug); |
3095 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3096 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3097 | else |
3098 | { | |
3099 | scm_make_cont (&arg1); | |
ca6ef71a | 3100 | if (setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
3101 | { |
3102 | proc = SCM_THROW_VALUE (arg1); | |
3103 | goto ret; | |
3104 | } | |
3105 | } | |
3106 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
3107 | } | |
3108 | ret: | |
1646d37b | 3109 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3110 | return proc; |
3111 | #endif | |
3112 | } | |
3113 | ||
6dbd0af5 MD |
3114 | |
3115 | /* SECTION: The rest of this file is only read once. | |
3116 | */ | |
3117 | ||
0f2d19dd JB |
3118 | #ifndef DEVAL |
3119 | ||
6cb702da | 3120 | SCM_PROC (s_map, "map", 2, 0, 1, scm_map); |
1cc91f1b | 3121 | |
368bf056 MD |
3122 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3123 | sequentially, starting with the first element(s). This is used in | |
3124 | evalext.c where the Scheme procedure `serial-map', which guarantees | |
3125 | sequential behaviour, is implemented using scm_map. If the | |
3126 | behaviour changes, we need to update `serial-map'. | |
3127 | */ | |
3128 | ||
0f2d19dd JB |
3129 | SCM |
3130 | scm_map (proc, arg1, args) | |
3131 | SCM proc; | |
3132 | SCM arg1; | |
3133 | SCM args; | |
0f2d19dd JB |
3134 | { |
3135 | long i; | |
3136 | SCM res = SCM_EOL; | |
3137 | SCM *pres = &res; | |
3138 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3139 | ||
3140 | if (SCM_NULLP (arg1)) | |
3141 | return res; | |
3142 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map); | |
3143 | if (SCM_NULLP (args)) | |
3144 | { | |
3145 | while (SCM_NIMP (arg1)) | |
3146 | { | |
3147 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
3148 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
a23afe53 | 3149 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3150 | arg1 = SCM_CDR (arg1); |
3151 | } | |
3152 | return res; | |
3153 | } | |
3154 | args = scm_vector (scm_cons (arg1, args)); | |
3155 | ve = SCM_VELTS (args); | |
cf7c17e9 | 3156 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3157 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) |
3158 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map); | |
3159 | #endif | |
3160 | while (1) | |
3161 | { | |
3162 | arg1 = SCM_EOL; | |
3163 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3164 | { | |
3165 | if SCM_IMP | |
3166 | (ve[i]) return res; | |
3167 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3168 | ve[i] = SCM_CDR (ve[i]); | |
3169 | } | |
3170 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3171 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3172 | } |
3173 | } | |
3174 | ||
3175 | ||
3176 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
1cc91f1b | 3177 | |
0f2d19dd JB |
3178 | SCM |
3179 | scm_for_each (proc, arg1, args) | |
3180 | SCM proc; | |
3181 | SCM arg1; | |
3182 | SCM args; | |
0f2d19dd JB |
3183 | { |
3184 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3185 | long i; | |
3186 | if SCM_NULLP (arg1) | |
3187 | return SCM_UNSPECIFIED; | |
3188 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each); | |
3189 | if SCM_NULLP (args) | |
3190 | { | |
3191 | while SCM_NIMP (arg1) | |
3192 | { | |
3193 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
3194 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
3195 | arg1 = SCM_CDR (arg1); | |
3196 | } | |
3197 | return SCM_UNSPECIFIED; | |
3198 | } | |
3199 | args = scm_vector (scm_cons (arg1, args)); | |
3200 | ve = SCM_VELTS (args); | |
cf7c17e9 | 3201 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3202 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) |
3203 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each); | |
3204 | #endif | |
3205 | while (1) | |
3206 | { | |
3207 | arg1 = SCM_EOL; | |
3208 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3209 | { | |
3210 | if SCM_IMP | |
3211 | (ve[i]) return SCM_UNSPECIFIED; | |
3212 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3213 | ve[i] = SCM_CDR (ve[i]); | |
3214 | } | |
3215 | scm_apply (proc, arg1, SCM_EOL); | |
3216 | } | |
3217 | } | |
3218 | ||
3219 | ||
1cc91f1b | 3220 | |
0f2d19dd JB |
3221 | SCM |
3222 | scm_closure (code, env) | |
3223 | SCM code; | |
3224 | SCM env; | |
0f2d19dd JB |
3225 | { |
3226 | register SCM z; | |
3227 | SCM_NEWCELL (z); | |
3228 | SCM_SETCODE (z, code); | |
a23afe53 | 3229 | SCM_SETENV (z, env); |
0f2d19dd JB |
3230 | return z; |
3231 | } | |
3232 | ||
3233 | ||
3234 | long scm_tc16_promise; | |
1cc91f1b | 3235 | |
0f2d19dd JB |
3236 | SCM |
3237 | scm_makprom (code) | |
3238 | SCM code; | |
0f2d19dd JB |
3239 | { |
3240 | register SCM z; | |
3241 | SCM_NEWCELL (z); | |
f83e2737 | 3242 | SCM_ENTER_A_SECTION; |
a23afe53 MD |
3243 | SCM_SETCDR (z, code); |
3244 | SCM_SETCAR (z, scm_tc16_promise); | |
f83e2737 | 3245 | SCM_EXIT_A_SECTION; |
0f2d19dd JB |
3246 | return z; |
3247 | } | |
3248 | ||
3249 | ||
1cc91f1b JB |
3250 | |
3251 | static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
3252 | ||
0f2d19dd | 3253 | static int |
19402679 | 3254 | prinprom (exp, port, pstate) |
0f2d19dd JB |
3255 | SCM exp; |
3256 | SCM port; | |
19402679 | 3257 | scm_print_state *pstate; |
0f2d19dd | 3258 | { |
19402679 | 3259 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3260 | scm_puts ("#<promise ", port); |
19402679 MD |
3261 | SCM_SET_WRITINGP (pstate, 1); |
3262 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3263 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3264 | scm_putc ('>', port); |
0f2d19dd JB |
3265 | return !0; |
3266 | } | |
3267 | ||
3268 | ||
0f2d19dd | 3269 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); |
1cc91f1b | 3270 | |
0f2d19dd JB |
3271 | SCM |
3272 | scm_force (x) | |
3273 | SCM x; | |
0f2d19dd | 3274 | { |
eed6e03e JB |
3275 | SCM_ASSERT (SCM_NIMP(x) && SCM_TYP16 (x) == scm_tc16_promise, |
3276 | x, SCM_ARG1, s_force); | |
0f2d19dd JB |
3277 | if (!((1L << 16) & SCM_CAR (x))) |
3278 | { | |
3279 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
3280 | if (!((1L << 16) & SCM_CAR (x))) | |
3281 | { | |
3282 | SCM_DEFER_INTS; | |
a23afe53 MD |
3283 | SCM_SETCDR (x, ans); |
3284 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3285 | SCM_ALLOW_INTS; |
3286 | } | |
3287 | } | |
3288 | return SCM_CDR (x); | |
3289 | } | |
3290 | ||
3291 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
1cc91f1b | 3292 | |
0f2d19dd JB |
3293 | SCM |
3294 | scm_promise_p (x) | |
3295 | SCM x; | |
0f2d19dd JB |
3296 | { |
3297 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
3298 | ? SCM_BOOL_T | |
3299 | : SCM_BOOL_F); | |
3300 | } | |
3301 | ||
3302 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
1cc91f1b | 3303 | |
0f2d19dd JB |
3304 | SCM |
3305 | scm_copy_tree (obj) | |
3306 | SCM obj; | |
0f2d19dd JB |
3307 | { |
3308 | SCM ans, tl; | |
3309 | if SCM_IMP | |
3310 | (obj) return obj; | |
3910272e MD |
3311 | if (SCM_VECTORP (obj)) |
3312 | { | |
3313 | scm_sizet i = SCM_LENGTH (obj); | |
3314 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); | |
3315 | while (i--) | |
3316 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3317 | return ans; | |
3318 | } | |
0f2d19dd JB |
3319 | if SCM_NCONSP (obj) |
3320 | return obj; | |
3321 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
3322 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
067affe3 MD |
3323 | { |
3324 | /* Copy source properties possibly associated with head pair. */ | |
3325 | SCM p = scm_whash_lookup (scm_source_whash, obj); | |
3326 | if (SCM_NIMP (p)) | |
3327 | scm_whash_insert (scm_source_whash, ans, p); | |
3328 | } | |
0f2d19dd | 3329 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) |
a23afe53 MD |
3330 | { |
3331 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3332 | SCM_UNSPECIFIED)); | |
3333 | tl = SCM_CDR (tl); | |
3334 | } | |
3335 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3336 | return ans; |
3337 | } | |
3338 | ||
1cc91f1b | 3339 | |
0f2d19dd JB |
3340 | SCM |
3341 | scm_eval_3 (obj, copyp, env) | |
3342 | SCM obj; | |
3343 | int copyp; | |
3344 | SCM env; | |
0f2d19dd JB |
3345 | { |
3346 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3347 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3348 | else if (copyp) | |
3349 | obj = scm_copy_tree (obj); | |
6cb702da | 3350 | return SCM_XEVAL (obj, env); |
0f2d19dd JB |
3351 | } |
3352 | ||
0f2d19dd | 3353 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); |
1cc91f1b | 3354 | |
0f2d19dd JB |
3355 | SCM |
3356 | scm_eval2 (obj, env_thunk) | |
3357 | SCM obj; | |
3358 | SCM env_thunk; | |
0f2d19dd | 3359 | { |
6bcb0868 | 3360 | return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk)); |
0f2d19dd JB |
3361 | } |
3362 | ||
3363 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
1cc91f1b | 3364 | |
0f2d19dd JB |
3365 | SCM |
3366 | scm_eval (obj) | |
3367 | SCM obj; | |
0f2d19dd | 3368 | { |
6bcb0868 MD |
3369 | return scm_eval_3 (obj, |
3370 | 1, | |
3371 | scm_top_level_env | |
3372 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3373 | } |
3374 | ||
11f77bfc | 3375 | /* SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); */ |
1cc91f1b | 3376 | |
0f2d19dd JB |
3377 | SCM |
3378 | scm_eval_x (obj) | |
3379 | SCM obj; | |
0f2d19dd | 3380 | { |
6bcb0868 MD |
3381 | return scm_eval_3 (obj, |
3382 | 0, | |
3383 | scm_top_level_env | |
3384 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3385 | } |
3386 | ||
3eeba8d4 | 3387 | static const scm_smobfuns promsmob = {scm_markcdr, scm_free0, prinprom}; |
0f2d19dd | 3388 | |
6dbd0af5 MD |
3389 | |
3390 | /* At this point, scm_deval and scm_dapply are generated. | |
3391 | */ | |
3392 | ||
0f2d19dd | 3393 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3394 | # define DEVAL |
3395 | # include "eval.c" | |
0f2d19dd JB |
3396 | #endif |
3397 | ||
3398 | ||
1cc91f1b | 3399 | |
0f2d19dd JB |
3400 | void |
3401 | scm_init_eval () | |
0f2d19dd | 3402 | { |
33b97402 MD |
3403 | scm_init_opts (scm_evaluator_traps, |
3404 | scm_evaluator_trap_table, | |
3405 | SCM_N_EVALUATOR_TRAPS); | |
3406 | scm_init_opts (scm_eval_options_interface, | |
3407 | scm_eval_opts, | |
3408 | SCM_N_EVAL_OPTIONS); | |
3409 | ||
0f2d19dd | 3410 | scm_tc16_promise = scm_newsmob (&promsmob); |
b8229a3b | 3411 | |
0f2d19dd JB |
3412 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
3413 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
3414 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
3415 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3416 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3417 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3418 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
3419 | ||
3420 | /* acros */ | |
0f2d19dd JB |
3421 | /* end of acros */ |
3422 | ||
dc19d1d2 JB |
3423 | scm_top_level_lookup_closure_var = |
3424 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3425 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3426 | |
6dbd0af5 MD |
3427 | #ifdef DEBUG_EXTENSIONS |
3428 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
3429 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3430 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3431 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
3432 | #endif | |
3433 | ||
0f2d19dd | 3434 | #include "eval.x" |
25eaf21a MD |
3435 | |
3436 | scm_add_feature ("delay"); | |
0f2d19dd | 3437 | } |
0f2d19dd | 3438 | |
6dbd0af5 | 3439 | #endif /* !DEVAL */ |