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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" | |
6cb702da | 85 | #include "macros.h" |
20e6290e JB |
86 | #include "procprop.h" |
87 | #include "hashtab.h" | |
ac46ab16 | 88 | #include "hash.h" |
20e6290e JB |
89 | #include "srcprop.h" |
90 | #include "stackchk.h" | |
0c32d76c MD |
91 | #include "objects.h" |
92 | #include "feature.h" | |
185905af | 93 | #include "modules.h" |
20e6290e JB |
94 | |
95 | #include "eval.h" | |
89efbff4 MD |
96 | |
97 | void (*scm_memoize_method) (SCM, SCM); | |
98 | ||
0f2d19dd JB |
99 | \f |
100 | ||
6dbd0af5 MD |
101 | /* The evaluator contains a plethora of EVAL symbols. |
102 | * This is an attempt at explanation. | |
103 | * | |
104 | * The following macros should be used in code which is read twice | |
105 | * (where the choice of evaluator is hard soldered): | |
106 | * | |
107 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
108 | * Originally, it is defined to scm_ceval, but is redefined to | |
109 | * scm_deval during the second pass. | |
110 | * | |
111 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
112 | * only side effects of expressions matter. All immediates are | |
113 | * ignored. | |
114 | * | |
6cb702da | 115 | * SCM_EVALIM is used when it is known that the expression is an |
6dbd0af5 MD |
116 | * immediate. (This macro never calls an evaluator.) |
117 | * | |
118 | * EVALCAR evaluates the car of an expression. | |
119 | * | |
120 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
121 | * car is a lisp cell. | |
122 | * | |
123 | * The following macros should be used in code which is read once | |
124 | * (where the choice of evaluator is dynamic): | |
125 | * | |
6cb702da | 126 | * SCM_XEVAL takes care of immediates without calling an evaluator. It |
6dbd0af5 MD |
127 | * then calls scm_ceval *or* scm_deval, depending on the debugging |
128 | * mode. | |
129 | * | |
6cb702da | 130 | * SCM_XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval |
6dbd0af5 MD |
131 | * depending on the debugging mode. |
132 | * | |
133 | * The main motivation for keeping this plethora is efficiency | |
134 | * together with maintainability (=> locality of code). | |
135 | */ | |
136 | ||
6cb702da MD |
137 | #define SCM_CEVAL scm_ceval |
138 | #define SIDEVAL(x, env) if SCM_NIMP(x) SCM_CEVAL((x), (env)) | |
139 | ||
0f2d19dd JB |
140 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR(x)) \ |
141 | ? *scm_lookupcar(x, env) \ | |
142 | : SCM_CEVAL(SCM_CAR(x), env)) | |
143 | ||
0f2d19dd JB |
144 | #define EVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x))\ |
145 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6cb702da | 146 | ? SCM_EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
147 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
148 | : EVALCELLCAR(x, env)) | |
0f2d19dd | 149 | |
e2806c10 | 150 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
151 | |
152 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 153 | |
0f2d19dd JB |
154 | SCM * |
155 | scm_ilookup (iloc, env) | |
156 | SCM iloc; | |
157 | SCM env; | |
0f2d19dd JB |
158 | { |
159 | register int ir = SCM_IFRAME (iloc); | |
160 | register SCM er = env; | |
161 | for (; 0 != ir; --ir) | |
162 | er = SCM_CDR (er); | |
163 | er = SCM_CAR (er); | |
164 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
165 | er = SCM_CDR (er); | |
166 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
167 | return SCM_CDRLOC (er); |
168 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
169 | } |
170 | #endif | |
171 | ||
f8769b1d MV |
172 | #ifdef USE_THREADS |
173 | ||
174 | /* The Lookup Car Race | |
175 | - by Eva Luator | |
176 | ||
177 | Memoization of variables and special forms is done while executing | |
178 | the code for the first time. As long as there is only one thread | |
179 | everything is fine, but as soon as two threads execute the same | |
180 | code concurrently `for the first time' they can come into conflict. | |
181 | ||
182 | This memoization includes rewriting variable references into more | |
183 | efficient forms and expanding macros. Furthermore, macro expansion | |
184 | includes `compiling' special forms like `let', `cond', etc. into | |
185 | tree-code instructions. | |
186 | ||
187 | There shouldn't normally be a problem with memoizing local and | |
188 | global variable references (into ilocs and glocs), because all | |
189 | threads will mutate the code in *exactly* the same way and (if I | |
190 | read the C code correctly) it is not possible to observe a half-way | |
191 | mutated cons cell. The lookup procedure can handle this | |
192 | transparently without any critical sections. | |
193 | ||
194 | It is different with macro expansion, because macro expansion | |
195 | happens outside of the lookup procedure and can't be | |
196 | undone. Therefore it can't cope with it. It has to indicate | |
197 | failure when it detects a lost race and hope that the caller can | |
198 | handle it. Luckily, it turns out that this is the case. | |
199 | ||
200 | An example to illustrate this: Suppose that the follwing form will | |
201 | be memoized concurrently by two threads | |
202 | ||
203 | (let ((x 12)) x) | |
204 | ||
205 | Let's first examine the lookup of X in the body. The first thread | |
206 | decides that it has to find the symbol "x" in the environment and | |
207 | starts to scan it. Then the other thread takes over and actually | |
208 | overtakes the first. It looks up "x" and substitutes an | |
209 | appropriate iloc for it. Now the first thread continues and | |
210 | completes its lookup. It comes to exactly the same conclusions as | |
211 | the second one and could - without much ado - just overwrite the | |
212 | iloc with the same iloc. | |
213 | ||
214 | But let's see what will happen when the race occurs while looking | |
215 | up the symbol "let" at the start of the form. It could happen that | |
216 | the second thread interrupts the lookup of the first thread and not | |
217 | only substitutes a gloc for it but goes right ahead and replaces it | |
218 | with the compiled form (#@let* (x 12) x). Now, when the first | |
219 | thread completes its lookup, it would replace the #@let* with a | |
220 | gloc pointing to the "let" binding, effectively reverting the form | |
221 | to (let (x 12) x). This is wrong. It has to detect that it has | |
222 | lost the race and the evaluator has to reconsider the changed form | |
223 | completely. | |
224 | ||
225 | This race condition could be resolved with some kind of traffic | |
226 | light (like mutexes) around scm_lookupcar, but I think that it is | |
227 | best to avoid them in this case. They would serialize memoization | |
228 | completely and because lookup involves calling arbitrary Scheme | |
229 | code (via the lookup-thunk), threads could be blocked for an | |
230 | arbitrary amount of time or even deadlock. But with the current | |
231 | solution a lot of unnecessary work is potentially done. */ | |
232 | ||
233 | /* SCM_LOOKUPCAR1 is was SCM_LOOKUPCAR used to be but is allowed to | |
234 | return NULL to indicate a failed lookup due to some race conditions | |
235 | between threads. This only happens when VLOC is the first cell of | |
236 | a special form that will eventually be memoized (like `let', etc.) | |
237 | In that case the whole lookup is bogus and the caller has to | |
238 | reconsider the complete special form. | |
239 | ||
240 | SCM_LOOKUPCAR is still there, of course. It just calls | |
241 | SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR | |
242 | should only be called when it is known that VLOC is not the first | |
243 | pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check | |
244 | for NULL. I think I've found the only place where this applies. */ | |
245 | ||
246 | #endif /* USE_THREADS */ | |
1cc91f1b | 247 | |
d0b7bad7 | 248 | #ifdef USE_THREADS |
8ecf1f13 JB |
249 | static SCM * |
250 | scm_lookupcar1 (SCM vloc, SCM genv) | |
d0b7bad7 MD |
251 | #else |
252 | SCM * | |
253 | scm_lookupcar (SCM vloc, SCM genv) | |
254 | #endif | |
0f2d19dd JB |
255 | { |
256 | SCM env = genv; | |
e3173f93 JB |
257 | register SCM *al, fl, var = SCM_CAR (vloc); |
258 | #ifdef USE_THREADS | |
259 | register SCM var2 = var; | |
260 | #endif | |
0f2d19dd JB |
261 | #ifdef MEMOIZE_LOCALS |
262 | register SCM iloc = SCM_ILOC00; | |
263 | #endif | |
264 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
265 | { | |
266 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
267 | break; | |
a23afe53 | 268 | al = SCM_CARLOC (env); |
0f2d19dd JB |
269 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
270 | { | |
271 | if (SCM_NCONSP (fl)) | |
33b97402 | 272 | { |
0f2d19dd JB |
273 | if (fl == var) |
274 | { | |
275 | #ifdef MEMOIZE_LOCALS | |
f8769b1d MV |
276 | #ifdef USE_THREADS |
277 | if (SCM_CAR (vloc) != var) | |
278 | goto race; | |
279 | #endif | |
a23afe53 | 280 | SCM_SETCAR (vloc, iloc + SCM_ICDR); |
0f2d19dd | 281 | #endif |
a23afe53 | 282 | return SCM_CDRLOC (*al); |
0f2d19dd | 283 | } |
33b97402 MD |
284 | else |
285 | break; | |
286 | } | |
a23afe53 | 287 | al = SCM_CDRLOC (*al); |
0f2d19dd JB |
288 | if (SCM_CAR (fl) == var) |
289 | { | |
290 | #ifdef MEMOIZE_LOCALS | |
cf7c17e9 | 291 | #ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */ |
0f2d19dd JB |
292 | if (SCM_UNBNDP (SCM_CAR (*al))) |
293 | { | |
294 | env = SCM_EOL; | |
295 | goto errout; | |
296 | } | |
f8769b1d MV |
297 | #endif |
298 | #ifdef USE_THREADS | |
299 | if (SCM_CAR (vloc) != var) | |
300 | goto race; | |
0f2d19dd | 301 | #endif |
a23afe53 | 302 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 303 | #endif |
a23afe53 | 304 | return SCM_CARLOC (*al); |
0f2d19dd JB |
305 | } |
306 | #ifdef MEMOIZE_LOCALS | |
307 | iloc += SCM_IDINC; | |
308 | #endif | |
309 | } | |
310 | #ifdef MEMOIZE_LOCALS | |
311 | iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC); | |
312 | #endif | |
313 | } | |
314 | { | |
315 | SCM top_thunk, vcell; | |
316 | if (SCM_NIMP(env)) | |
317 | { | |
318 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
319 | env = SCM_CDR (env); | |
320 | } | |
321 | else | |
322 | top_thunk = SCM_BOOL_F; | |
323 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
324 | if (vcell == SCM_BOOL_F) | |
325 | goto errout; | |
326 | else | |
327 | var = vcell; | |
328 | } | |
cf7c17e9 | 329 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
330 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) |
331 | { | |
332 | var = SCM_CAR (var); | |
333 | errout: | |
f5bf2977 | 334 | /* scm_everr (vloc, genv,...) */ |
523f5266 GH |
335 | scm_misc_error (NULL, |
336 | SCM_NULLP (env) | |
337 | ? "Unbound variable: %S" | |
338 | : "Damaged environment: %S", | |
339 | scm_listify (var, SCM_UNDEFINED)); | |
0f2d19dd JB |
340 | } |
341 | #endif | |
f8769b1d MV |
342 | #ifdef USE_THREADS |
343 | if (SCM_CAR (vloc) != var2) | |
344 | { | |
345 | /* Some other thread has changed the very cell we are working | |
346 | on. In effect, it must have done our job or messed it up | |
347 | completely. */ | |
348 | race: | |
349 | var = SCM_CAR (vloc); | |
350 | if ((var & 7) == 1) | |
351 | return SCM_GLOC_VAL_LOC (var); | |
352 | #ifdef MEMOIZE_LOCALS | |
353 | if ((var & 127) == (127 & SCM_ILOC00)) | |
354 | return scm_ilookup (var, genv); | |
355 | #endif | |
356 | /* We can't cope with anything else than glocs and ilocs. When | |
357 | a special form has been memoized (i.e. `let' into `#@let') we | |
358 | return NULL and expect the calling function to do the right | |
359 | thing. For the evaluator, this means going back and redoing | |
360 | the dispatch on the car of the form. */ | |
361 | return NULL; | |
362 | } | |
363 | #endif /* USE_THREADS */ | |
364 | ||
a23afe53 | 365 | SCM_SETCAR (vloc, var + 1); |
0f2d19dd | 366 | /* Except wait...what if the var is not a vcell, |
f8769b1d | 367 | * but syntax or something.... */ |
a23afe53 | 368 | return SCM_CDRLOC (var); |
0f2d19dd JB |
369 | } |
370 | ||
f8769b1d MV |
371 | #ifdef USE_THREADS |
372 | SCM * | |
373 | scm_lookupcar (vloc, genv) | |
374 | SCM vloc; | |
375 | SCM genv; | |
376 | { | |
377 | SCM *loc = scm_lookupcar1 (vloc, genv); | |
378 | if (loc == NULL) | |
379 | abort (); | |
380 | return loc; | |
381 | } | |
f8769b1d MV |
382 | #endif |
383 | ||
0f2d19dd | 384 | #define unmemocar scm_unmemocar |
1cc91f1b | 385 | |
0f2d19dd JB |
386 | SCM |
387 | scm_unmemocar (form, env) | |
388 | SCM form; | |
389 | SCM env; | |
0f2d19dd | 390 | { |
6dbd0af5 | 391 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 392 | register int ir; |
6dbd0af5 | 393 | #endif |
0f2d19dd JB |
394 | SCM c; |
395 | ||
396 | if (SCM_IMP (form)) | |
397 | return form; | |
398 | c = SCM_CAR (form); | |
399 | if (1 == (c & 7)) | |
a23afe53 | 400 | SCM_SETCAR (form, SCM_CAR (c - 1)); |
0f2d19dd | 401 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 402 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
403 | else if (SCM_ILOCP (c)) |
404 | { | |
405 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
406 | env = SCM_CDR (env); | |
407 | env = SCM_CAR (SCM_CAR (env)); | |
408 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
409 | env = SCM_CDR (env); | |
a23afe53 | 410 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 411 | } |
6dbd0af5 | 412 | #endif |
0f2d19dd JB |
413 | #endif |
414 | return form; | |
415 | } | |
416 | ||
1cc91f1b | 417 | |
0f2d19dd JB |
418 | SCM |
419 | scm_eval_car (pair, env) | |
420 | SCM pair; | |
421 | SCM env; | |
0f2d19dd | 422 | { |
6cb702da | 423 | return SCM_XEVALCAR (pair, env); |
0f2d19dd JB |
424 | } |
425 | ||
426 | \f | |
427 | /* | |
428 | * The following rewrite expressions and | |
429 | * some memoized forms have different syntax | |
430 | */ | |
431 | ||
3eeba8d4 JB |
432 | const char scm_s_expression[] = "missing or extra expression"; |
433 | const char scm_s_test[] = "bad test"; | |
434 | const char scm_s_body[] = "bad body"; | |
435 | const char scm_s_bindings[] = "bad bindings"; | |
436 | const char scm_s_variable[] = "bad variable"; | |
437 | const char scm_s_clauses[] = "bad or missing clauses"; | |
438 | const char scm_s_formals[] = "bad formals"; | |
0f2d19dd | 439 | |
b8229a3b MS |
440 | SCM scm_i_dot, scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply; |
441 | ||
6dbd0af5 MD |
442 | #ifdef DEBUG_EXTENSIONS |
443 | SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame; | |
444 | SCM scm_i_trace; | |
445 | #endif | |
0f2d19dd JB |
446 | |
447 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
448 | ||
449 | ||
1cc91f1b | 450 | |
e4755e5c | 451 | static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, const char *what)); |
1cc91f1b | 452 | |
0f2d19dd JB |
453 | static void |
454 | bodycheck (xorig, bodyloc, what) | |
455 | SCM xorig; | |
456 | SCM *bodyloc; | |
e4755e5c | 457 | const char *what; |
0f2d19dd | 458 | { |
6cb702da | 459 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, scm_s_expression); |
0f2d19dd JB |
460 | } |
461 | ||
b8229a3b MS |
462 | SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote); |
463 | SCM_GLOBAL_SYMBOL(scm_i_quote,s_quote); | |
1cc91f1b | 464 | |
0f2d19dd JB |
465 | SCM |
466 | scm_m_quote (xorig, env) | |
467 | SCM xorig; | |
468 | SCM env; | |
0f2d19dd | 469 | { |
6cb702da | 470 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 471 | xorig, scm_s_expression, s_quote); |
0f2d19dd JB |
472 | return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig)); |
473 | } | |
474 | ||
475 | ||
1cc91f1b | 476 | |
b8229a3b MS |
477 | SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin); |
478 | SCM_SYMBOL(scm_i_begin, s_begin); | |
479 | ||
0f2d19dd JB |
480 | SCM |
481 | scm_m_begin (xorig, env) | |
482 | SCM xorig; | |
483 | SCM env; | |
0f2d19dd | 484 | { |
6cb702da | 485 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, |
b8229a3b | 486 | xorig, scm_s_expression, s_begin); |
0f2d19dd JB |
487 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); |
488 | } | |
489 | ||
b8229a3b MS |
490 | SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if); |
491 | SCM_SYMBOL(scm_i_if, s_if); | |
1cc91f1b | 492 | |
0f2d19dd JB |
493 | SCM |
494 | scm_m_if (xorig, env) | |
495 | SCM xorig; | |
496 | SCM env; | |
0f2d19dd JB |
497 | { |
498 | int len = scm_ilength (SCM_CDR (xorig)); | |
6cb702da | 499 | SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if"); |
0f2d19dd JB |
500 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); |
501 | } | |
502 | ||
503 | ||
89efbff4 MD |
504 | /* Will go into the RnRS module when Guile is factorized. |
505 | SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */ | |
506 | const char scm_s_set_x[] = "set!"; | |
507 | SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x); | |
1cc91f1b | 508 | |
0f2d19dd | 509 | SCM |
89efbff4 | 510 | scm_m_set_x (xorig, env) |
0f2d19dd JB |
511 | SCM xorig; |
512 | SCM env; | |
0f2d19dd | 513 | { |
6dbd0af5 | 514 | SCM x = SCM_CDR (xorig); |
89efbff4 | 515 | SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x); |
6cb702da | 516 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)), |
89efbff4 MD |
517 | xorig, scm_s_variable, scm_s_set_x); |
518 | return scm_cons (SCM_IM_SET_X, x); | |
0f2d19dd JB |
519 | } |
520 | ||
521 | ||
522 | #if 0 | |
1cc91f1b | 523 | |
0f2d19dd JB |
524 | SCM |
525 | scm_m_vref (xorig, env) | |
526 | SCM xorig; | |
527 | SCM env; | |
0f2d19dd JB |
528 | { |
529 | SCM x = SCM_CDR (xorig); | |
6cb702da | 530 | SCM_ASSYNT (1 == scm_ilength (x), xorig, scm_s_expression, s_vref); |
0f2d19dd JB |
531 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) |
532 | { | |
f5bf2977 | 533 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 GH |
534 | scm_misc_error (NULL, |
535 | "Bad variable: %S", | |
536 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); | |
0f2d19dd | 537 | } |
6cb702da MD |
538 | SCM_ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), |
539 | xorig, scm_s_variable, s_vref); | |
0f2d19dd JB |
540 | return |
541 | return scm_cons (IM_VREF, x); | |
542 | } | |
543 | ||
544 | ||
1cc91f1b | 545 | |
0f2d19dd JB |
546 | SCM |
547 | scm_m_vset (xorig, env) | |
548 | SCM xorig; | |
549 | SCM env; | |
0f2d19dd JB |
550 | { |
551 | SCM x = SCM_CDR (xorig); | |
6cb702da MD |
552 | SCM_ASSYNT (3 == scm_ilength (x), xorig, scm_s_expression, s_vset); |
553 | SCM_ASSYNT ((DEFSCM_VARIABLEP (SCM_CAR (x)) | |
554 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
555 | xorig, scm_s_variable, s_vset); | |
0f2d19dd JB |
556 | return scm_cons (IM_VSET, x); |
557 | } | |
558 | #endif | |
559 | ||
560 | ||
b8229a3b MS |
561 | SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and); |
562 | SCM_GLOBAL_SYMBOL(scm_i_and, s_and); | |
1cc91f1b | 563 | |
0f2d19dd JB |
564 | SCM |
565 | scm_m_and (xorig, env) | |
566 | SCM xorig; | |
567 | SCM env; | |
0f2d19dd JB |
568 | { |
569 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 570 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and); |
0f2d19dd JB |
571 | if (len >= 1) |
572 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); | |
573 | else | |
574 | return SCM_BOOL_T; | |
575 | } | |
576 | ||
b8229a3b MS |
577 | SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or); |
578 | SCM_SYMBOL(scm_i_or,s_or); | |
1cc91f1b | 579 | |
0f2d19dd JB |
580 | SCM |
581 | scm_m_or (xorig, env) | |
582 | SCM xorig; | |
583 | SCM env; | |
0f2d19dd JB |
584 | { |
585 | int len = scm_ilength (SCM_CDR (xorig)); | |
b8229a3b | 586 | SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or); |
0f2d19dd JB |
587 | if (len >= 1) |
588 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); | |
589 | else | |
590 | return SCM_BOOL_F; | |
591 | } | |
592 | ||
593 | ||
b8229a3b MS |
594 | SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case); |
595 | SCM_SYMBOL(scm_i_case, s_case); | |
1cc91f1b | 596 | |
0f2d19dd JB |
597 | SCM |
598 | scm_m_case (xorig, env) | |
599 | SCM xorig; | |
600 | SCM env; | |
0f2d19dd JB |
601 | { |
602 | SCM proc, x = SCM_CDR (xorig); | |
b8229a3b | 603 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
604 | while (SCM_NIMP (x = SCM_CDR (x))) |
605 | { | |
606 | proc = SCM_CAR (x); | |
b8229a3b | 607 | SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case); |
6cb702da MD |
608 | SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 |
609 | || scm_i_else == SCM_CAR (proc), | |
b8229a3b | 610 | xorig, scm_s_clauses, s_case); |
0f2d19dd JB |
611 | } |
612 | return scm_cons (SCM_IM_CASE, SCM_CDR (xorig)); | |
613 | } | |
614 | ||
615 | ||
b8229a3b MS |
616 | SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond); |
617 | SCM_SYMBOL(scm_i_cond, s_cond); | |
618 | ||
1cc91f1b | 619 | |
0f2d19dd JB |
620 | SCM |
621 | scm_m_cond (xorig, env) | |
622 | SCM xorig; | |
623 | SCM env; | |
0f2d19dd JB |
624 | { |
625 | SCM arg1, x = SCM_CDR (xorig); | |
626 | int len = scm_ilength (x); | |
b8229a3b | 627 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
628 | while (SCM_NIMP (x)) |
629 | { | |
630 | arg1 = SCM_CAR (x); | |
631 | len = scm_ilength (arg1); | |
b8229a3b | 632 | SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond); |
0f2d19dd JB |
633 | if (scm_i_else == SCM_CAR (arg1)) |
634 | { | |
6cb702da | 635 | SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, |
b8229a3b | 636 | xorig, "bad ELSE clause", s_cond); |
a23afe53 | 637 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd JB |
638 | } |
639 | if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1))) | |
6cb702da | 640 | SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), |
b8229a3b | 641 | xorig, "bad recipient", s_cond); |
0f2d19dd JB |
642 | x = SCM_CDR (x); |
643 | } | |
644 | return scm_cons (SCM_IM_COND, SCM_CDR (xorig)); | |
645 | } | |
646 | ||
b8229a3b MS |
647 | SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda); |
648 | SCM_GLOBAL_SYMBOL(scm_i_lambda, s_lambda); | |
1cc91f1b | 649 | |
0f2d19dd JB |
650 | SCM |
651 | scm_m_lambda (xorig, env) | |
652 | SCM xorig; | |
653 | SCM env; | |
0f2d19dd JB |
654 | { |
655 | SCM proc, x = SCM_CDR (xorig); | |
656 | if (scm_ilength (x) < 2) | |
657 | goto badforms; | |
658 | proc = SCM_CAR (x); | |
33b97402 MD |
659 | if (SCM_NULLP (proc)) |
660 | goto memlambda; | |
661 | if (SCM_IMP (proc)) | |
662 | goto badforms; | |
663 | if (SCM_SYMBOLP (proc)) | |
664 | goto memlambda; | |
665 | if (SCM_NCONSP (proc)) | |
666 | goto badforms; | |
667 | while (SCM_NIMP (proc)) | |
0f2d19dd | 668 | { |
33b97402 MD |
669 | if (SCM_NCONSP (proc)) |
670 | { | |
0f2d19dd | 671 | if (!SCM_SYMBOLP (proc)) |
33b97402 MD |
672 | goto badforms; |
673 | else | |
674 | goto memlambda; | |
675 | } | |
0f2d19dd JB |
676 | if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc)))) |
677 | goto badforms; | |
678 | proc = SCM_CDR (proc); | |
679 | } | |
680 | if SCM_NNULLP | |
681 | (proc) | |
6cb702da | 682 | badforms:scm_wta (xorig, scm_s_formals, "lambda"); |
0f2d19dd | 683 | memlambda: |
a23afe53 | 684 | bodycheck (xorig, SCM_CDRLOC (x), "lambda"); |
0f2d19dd JB |
685 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); |
686 | } | |
687 | ||
b8229a3b MS |
688 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
689 | SCM_SYMBOL(scm_i_letstar,s_letstar); | |
0f2d19dd | 690 | |
1cc91f1b | 691 | |
0f2d19dd JB |
692 | SCM |
693 | scm_m_letstar (xorig, env) | |
694 | SCM xorig; | |
695 | SCM env; | |
0f2d19dd JB |
696 | { |
697 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
698 | int len = scm_ilength (x); | |
b8229a3b | 699 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 700 | proc = SCM_CAR (x); |
b8229a3b | 701 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
6dbd0af5 | 702 | while SCM_NIMP (proc) |
0f2d19dd JB |
703 | { |
704 | arg1 = SCM_CAR (proc); | |
b8229a3b | 705 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
6cb702da | 706 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 707 | xorig, scm_s_variable, s_letstar); |
0f2d19dd | 708 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 709 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
710 | proc = SCM_CDR (proc); |
711 | } | |
712 | x = scm_cons (vars, SCM_CDR (x)); | |
b8229a3b | 713 | bodycheck (xorig, SCM_CDRLOC (x), s_letstar); |
0f2d19dd JB |
714 | return scm_cons (SCM_IM_LETSTAR, x); |
715 | } | |
716 | ||
717 | /* DO gets the most radically altered syntax | |
718 | (do ((<var1> <init1> <step1>) | |
719 | (<var2> <init2>) | |
720 | ... ) | |
721 | (<test> <return>) | |
722 | <body>) | |
723 | ;; becomes | |
724 | (do_mem (varn ... var2 var1) | |
725 | (<init1> <init2> ... <initn>) | |
726 | (<test> <return>) | |
727 | (<body>) | |
728 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
729 | */ | |
730 | ||
b8229a3b MS |
731 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
732 | SCM_SYMBOL(scm_i_do, s_do); | |
1cc91f1b | 733 | |
0f2d19dd JB |
734 | SCM |
735 | scm_m_do (xorig, env) | |
736 | SCM xorig; | |
737 | SCM env; | |
0f2d19dd JB |
738 | { |
739 | SCM x = SCM_CDR (xorig), arg1, proc; | |
740 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
741 | SCM *initloc = &inits, *steploc = &steps; | |
742 | int len = scm_ilength (x); | |
6cb702da | 743 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 744 | proc = SCM_CAR (x); |
6cb702da | 745 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
0f2d19dd JB |
746 | while SCM_NIMP |
747 | (proc) | |
748 | { | |
749 | arg1 = SCM_CAR (proc); | |
750 | len = scm_ilength (arg1); | |
6cb702da MD |
751 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
752 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), | |
753 | xorig, scm_s_variable, "do"); | |
0f2d19dd JB |
754 | /* vars reversed here, inits and steps reversed at evaluation */ |
755 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
756 | arg1 = SCM_CDR (arg1); | |
757 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 758 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
759 | arg1 = SCM_CDR (arg1); |
760 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 761 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
762 | proc = SCM_CDR (proc); |
763 | } | |
764 | x = SCM_CDR (x); | |
6cb702da | 765 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
766 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
767 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 768 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
0f2d19dd JB |
769 | return scm_cons (SCM_IM_DO, x); |
770 | } | |
771 | ||
6dbd0af5 MD |
772 | /* evalcar is small version of inline EVALCAR when we don't care about |
773 | * speed | |
774 | */ | |
775 | #define evalcar scm_eval_car | |
0f2d19dd | 776 | |
1cc91f1b JB |
777 | |
778 | static SCM iqq SCM_P ((SCM form, SCM env, int depth)); | |
779 | ||
b8229a3b MS |
780 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
781 | SCM_GLOBAL_SYMBOL(scm_i_quasiquote, s_quasiquote); | |
782 | ||
783 | SCM | |
784 | scm_m_quasiquote (xorig, env) | |
785 | SCM xorig; | |
786 | SCM env; | |
787 | { | |
788 | SCM x = SCM_CDR (xorig); | |
789 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
790 | return iqq (SCM_CAR (x), env, 1); | |
791 | } | |
792 | ||
793 | ||
0f2d19dd JB |
794 | static SCM |
795 | iqq (form, env, depth) | |
796 | SCM form; | |
797 | SCM env; | |
798 | int depth; | |
0f2d19dd JB |
799 | { |
800 | SCM tmp; | |
801 | int edepth = depth; | |
802 | if SCM_IMP | |
803 | (form) return form; | |
804 | if (SCM_VECTORP (form)) | |
805 | { | |
806 | long i = SCM_LENGTH (form); | |
807 | SCM *data = SCM_VELTS (form); | |
808 | tmp = SCM_EOL; | |
809 | for (; --i >= 0;) | |
810 | tmp = scm_cons (data[i], tmp); | |
811 | return scm_vector (iqq (tmp, env, depth)); | |
812 | } | |
813 | if SCM_NCONSP | |
814 | (form) return form; | |
815 | tmp = SCM_CAR (form); | |
816 | if (scm_i_quasiquote == tmp) | |
817 | { | |
818 | depth++; | |
819 | goto label; | |
820 | } | |
821 | if (scm_i_unquote == tmp) | |
822 | { | |
823 | --depth; | |
824 | label: | |
825 | form = SCM_CDR (form); | |
0f2d19dd JB |
826 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
827 | form, SCM_ARG1, s_quasiquote); | |
828 | if (0 == depth) | |
829 | return evalcar (form, env); | |
830 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
831 | } | |
832 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
833 | { | |
834 | tmp = SCM_CDR (tmp); | |
835 | if (0 == --edepth) | |
836 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
837 | } | |
838 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
839 | } | |
840 | ||
841 | /* Here are acros which return values rather than code. */ | |
842 | ||
b8229a3b | 843 | SCM_SYNTAX(s_delay, "delay", scm_makacro, scm_m_delay); |
1cc91f1b | 844 | |
0f2d19dd JB |
845 | SCM |
846 | scm_m_delay (xorig, env) | |
847 | SCM xorig; | |
848 | SCM env; | |
0f2d19dd | 849 | { |
6cb702da | 850 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
0f2d19dd JB |
851 | xorig = SCM_CDR (xorig); |
852 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
853 | env)); | |
854 | } | |
855 | ||
1cc91f1b | 856 | |
b8229a3b MS |
857 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
858 | SCM_SYMBOL(scm_i_define, s_define); | |
1cc91f1b | 859 | |
0f2d19dd JB |
860 | SCM |
861 | scm_m_define (x, env) | |
862 | SCM x; | |
863 | SCM env; | |
0f2d19dd JB |
864 | { |
865 | SCM proc, arg1 = x; | |
866 | x = SCM_CDR (x); | |
6cb702da | 867 | /* SCM_ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ |
b8229a3b | 868 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
869 | proc = SCM_CAR (x); |
870 | x = SCM_CDR (x); | |
871 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
872 | { /* nested define syntax */ | |
873 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
874 | proc = SCM_CAR (proc); | |
875 | } | |
6cb702da | 876 | SCM_ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), |
b8229a3b MS |
877 | arg1, scm_s_variable, s_define); |
878 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
879 | if (SCM_TOP_LEVEL (env)) |
880 | { | |
881 | x = evalcar (x, env); | |
6dbd0af5 | 882 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
883 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
884 | { | |
885 | arg1 = x; | |
886 | proc: | |
887 | if (SCM_CLOSUREP (arg1) | |
888 | /* Only the first definition determines the name. */ | |
889 | && scm_procedure_property (arg1, scm_i_name) == SCM_BOOL_F) | |
890 | scm_set_procedure_property_x (arg1, scm_i_name, proc); | |
891 | else if (SCM_TYP16 (arg1) == scm_tc16_macro | |
892 | && SCM_CDR (arg1) != arg1) | |
893 | { | |
894 | arg1 = SCM_CDR (arg1); | |
895 | goto proc; | |
896 | } | |
897 | } | |
6dbd0af5 | 898 | #endif |
6cb702da | 899 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
0f2d19dd | 900 | #if 0 |
cf7c17e9 | 901 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
902 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) |
903 | && (SCM_CDR (arg1) != x)) | |
904 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
905 | else | |
906 | #endif | |
907 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
908 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 909 | #endif |
a23afe53 | 910 | SCM_SETCDR (arg1, x); |
0f2d19dd JB |
911 | #ifdef SICP |
912 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
913 | #else | |
914 | return SCM_UNSPECIFIED; | |
915 | #endif | |
916 | } | |
917 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
918 | } | |
6dbd0af5 | 919 | |
0f2d19dd JB |
920 | /* end of acros */ |
921 | ||
b8229a3b MS |
922 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
923 | SCM_SYMBOL(scm_i_letrec, s_letrec); | |
1cc91f1b | 924 | |
0f2d19dd JB |
925 | SCM |
926 | scm_m_letrec (xorig, env) | |
927 | SCM xorig; | |
928 | SCM env; | |
0f2d19dd JB |
929 | { |
930 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
931 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
932 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
933 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
934 | ||
6cb702da | 935 | ASRTSYNTAX (scm_ilength (x) >= 2, scm_s_body); |
0f2d19dd JB |
936 | proc = SCM_CAR (x); |
937 | if SCM_NULLP | |
938 | (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
6cb702da | 939 | ASRTSYNTAX (scm_ilength (proc) >= 1, scm_s_bindings); |
0f2d19dd JB |
940 | do |
941 | { | |
942 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
943 | arg1 = SCM_CAR (proc); | |
6cb702da MD |
944 | ASRTSYNTAX (2 == scm_ilength (arg1), scm_s_bindings); |
945 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), scm_s_variable); | |
0f2d19dd JB |
946 | vars = scm_cons (SCM_CAR (arg1), vars); |
947 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 948 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
949 | } |
950 | while SCM_NIMP | |
951 | (proc = SCM_CDR (proc)); | |
952 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); | |
a23afe53 | 953 | bodycheck (xorig, SCM_CDRLOC (SCM_CDR (cdrx)), what); |
0f2d19dd JB |
954 | return scm_cons (SCM_IM_LETREC, cdrx); |
955 | } | |
956 | ||
1cc91f1b | 957 | |
b8229a3b | 958 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
e4755e5c | 959 | SCM_GLOBAL_SYMBOL(scm_i_let, s_let); |
b8229a3b | 960 | |
0f2d19dd JB |
961 | SCM |
962 | scm_m_let (xorig, env) | |
963 | SCM xorig; | |
964 | SCM env; | |
0f2d19dd JB |
965 | { |
966 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
967 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
968 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
969 | ||
b8229a3b | 970 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
971 | proc = SCM_CAR (x); |
972 | if (SCM_NULLP (proc) | |
973 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
974 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
975 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
b8229a3b | 976 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
0f2d19dd JB |
977 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ |
978 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
979 | if (!SCM_SYMBOLP (proc)) | |
b8229a3b | 980 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
981 | name = proc; /* named let, build equiv letrec */ |
982 | x = SCM_CDR (x); | |
b8229a3b | 983 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd | 984 | proc = SCM_CAR (x); /* bindings scm_list */ |
b8229a3b | 985 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
0f2d19dd JB |
986 | while SCM_NIMP |
987 | (proc) | |
988 | { /* vars and inits both in order */ | |
989 | arg1 = SCM_CAR (proc); | |
b8229a3b | 990 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
6cb702da | 991 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 992 | xorig, scm_s_variable, s_let); |
0f2d19dd | 993 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 994 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 995 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 996 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
997 | proc = SCM_CDR (proc); |
998 | } | |
999 | return | |
1000 | scm_m_letrec (scm_cons2 (scm_i_let, | |
1001 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
1002 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
1003 | env); | |
1004 | } | |
1005 | ||
1006 | ||
b8229a3b MS |
1007 | SCM_SYNTAX(s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
1008 | SCM_SYMBOL(scm_i_atapply, s_atapply); | |
1cc91f1b | 1009 | |
0f2d19dd JB |
1010 | SCM |
1011 | scm_m_apply (xorig, env) | |
1012 | SCM xorig; | |
1013 | SCM env; | |
0f2d19dd | 1014 | { |
6cb702da | 1015 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 1016 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
1017 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1018 | } | |
1019 | ||
b8229a3b MS |
1020 | |
1021 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
1022 | SCM_SYMBOL(scm_i_atcall_cc,s_atcall_cc); | |
0f2d19dd | 1023 | |
1cc91f1b | 1024 | |
0f2d19dd JB |
1025 | SCM |
1026 | scm_m_cont (xorig, env) | |
1027 | SCM xorig; | |
1028 | SCM env; | |
0f2d19dd | 1029 | { |
6cb702da | 1030 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1031 | xorig, scm_s_expression, s_atcall_cc); |
0f2d19dd JB |
1032 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
1033 | } | |
1034 | ||
6dbd0af5 MD |
1035 | /* scm_unmemocopy takes a memoized expression together with its |
1036 | * environment and rewrites it to its original form. Thus, it is the | |
1037 | * inversion of the rewrite rules above. The procedure is not | |
1038 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1039 | * code of a closure, in scm_procedure_source, in display_frame when |
1040 | * generating the source for a stackframe in a backtrace, and in | |
1041 | * display_expression. | |
6dbd0af5 MD |
1042 | */ |
1043 | ||
1cc91f1b JB |
1044 | static SCM unmemocopy SCM_P ((SCM x, SCM env)); |
1045 | ||
6dbd0af5 MD |
1046 | static SCM |
1047 | unmemocopy (x, env) | |
1048 | SCM x; | |
1049 | SCM env; | |
6dbd0af5 MD |
1050 | { |
1051 | SCM ls, z; | |
1052 | #ifdef DEBUG_EXTENSIONS | |
1053 | SCM p; | |
1054 | #endif | |
1055 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1056 | return x; | |
1057 | #ifdef DEBUG_EXTENSIONS | |
1058 | p = scm_whash_lookup (scm_source_whash, x); | |
1059 | #endif | |
1060 | switch (SCM_TYP7 (x)) | |
1061 | { | |
1062 | case (127 & SCM_IM_AND): | |
1063 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
1064 | break; | |
1065 | case (127 & SCM_IM_BEGIN): | |
1066 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
1067 | break; | |
1068 | case (127 & SCM_IM_CASE): | |
1069 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
1070 | break; | |
1071 | case (127 & SCM_IM_COND): | |
1072 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
1073 | break; | |
1074 | case (127 & SCM_IM_DO): | |
1075 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
1076 | goto transform; | |
1077 | case (127 & SCM_IM_IF): | |
1078 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
1079 | break; | |
1080 | case (127 & SCM_IM_LET): | |
1081 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
1082 | goto transform; | |
1083 | case (127 & SCM_IM_LETREC): | |
1084 | { | |
1085 | SCM f, v, e, s; | |
1086 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
1087 | transform: | |
1088 | x = SCM_CDR (x); | |
1089 | f = v = SCM_CAR (x); | |
1090 | x = SCM_CDR (x); | |
e2806c10 | 1091 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
1092 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
1093 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
1094 | env = z; | |
1095 | s = SCM_CAR (ls) == scm_i_do | |
1096 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
1097 | : f; | |
1098 | z = SCM_EOL; | |
1099 | do | |
1100 | { | |
1101 | z = scm_acons (SCM_CAR (v), | |
1102 | scm_cons (SCM_CAR (e), | |
1103 | SCM_CAR (s) == SCM_CAR (v) | |
1104 | ? SCM_EOL | |
1105 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1106 | z); | |
1107 | v = SCM_CDR (v); | |
1108 | e = SCM_CDR (e); | |
1109 | s = SCM_CDR (s); | |
1110 | } | |
1111 | while SCM_NIMP (v); | |
a23afe53 MD |
1112 | z = scm_cons (z, SCM_UNSPECIFIED); |
1113 | SCM_SETCDR (ls, z); | |
6dbd0af5 MD |
1114 | if (SCM_CAR (ls) == scm_i_do) |
1115 | { | |
1116 | x = SCM_CDR (x); | |
a23afe53 | 1117 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1118 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1119 | z = SCM_CDR (z); |
1120 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
6dbd0af5 MD |
1121 | } |
1122 | break; | |
1123 | } | |
1124 | case (127 & SCM_IM_LETSTAR): | |
1125 | { | |
1126 | SCM b, y; | |
1127 | x = SCM_CDR (x); | |
1128 | b = SCM_CAR (x); | |
1129 | y = SCM_EOL; | |
1130 | if SCM_IMP (b) | |
1131 | { | |
e2806c10 | 1132 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1133 | goto letstar; |
1134 | } | |
1135 | y = z = scm_acons (SCM_CAR (b), | |
1136 | unmemocar ( | |
1137 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1138 | SCM_UNSPECIFIED); | |
e2806c10 | 1139 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1140 | b = SCM_CDR (SCM_CDR (b)); |
1141 | if (SCM_IMP (b)) | |
1142 | { | |
1143 | SCM_SETCDR (y, SCM_EOL); | |
1144 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1145 | break; | |
1146 | } | |
1147 | do | |
1148 | { | |
a23afe53 MD |
1149 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1150 | unmemocar ( | |
6dbd0af5 | 1151 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1152 | SCM_UNSPECIFIED)); |
1153 | z = SCM_CDR (z); | |
e2806c10 | 1154 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1155 | b = SCM_CDR (SCM_CDR (b)); |
1156 | } | |
1157 | while SCM_NIMP (b); | |
a23afe53 | 1158 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 MD |
1159 | letstar: |
1160 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1161 | break; | |
1162 | } | |
1163 | case (127 & SCM_IM_OR): | |
1164 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1165 | break; | |
1166 | case (127 & SCM_IM_LAMBDA): | |
1167 | x = SCM_CDR (x); | |
1168 | ls = scm_cons (scm_i_lambda, | |
1169 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1170 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1171 | break; |
1172 | case (127 & SCM_IM_QUOTE): | |
1173 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1174 | break; | |
89efbff4 MD |
1175 | case (127 & SCM_IM_SET_X): |
1176 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); | |
6dbd0af5 MD |
1177 | break; |
1178 | case (127 & SCM_IM_DEFINE): | |
1179 | { | |
1180 | SCM n; | |
1181 | x = SCM_CDR (x); | |
1182 | ls = scm_cons (scm_i_define, | |
1183 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1184 | if (SCM_NNULLP (env)) | |
a23afe53 | 1185 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1186 | break; |
1187 | } | |
1188 | case (127 & SCM_MAKISYM (0)): | |
1189 | z = SCM_CAR (x); | |
1190 | if (!SCM_ISYMP (z)) | |
1191 | goto unmemo; | |
1192 | switch SCM_ISYMNUM (z) | |
1193 | { | |
1194 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1195 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1196 | goto loop; | |
1197 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1198 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1199 | goto loop; | |
1200 | default: | |
fa888178 | 1201 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1202 | } |
1203 | unmemo: | |
1204 | default: | |
1205 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1206 | SCM_UNSPECIFIED), | |
1207 | env); | |
1208 | } | |
1209 | loop: | |
1210 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 MD |
1211 | { |
1212 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1213 | SCM_UNSPECIFIED), | |
1214 | env)); | |
1215 | z = SCM_CDR (z); | |
1216 | } | |
1217 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1218 | #ifdef DEBUG_EXTENSIONS |
1219 | if (SCM_NFALSEP (p)) | |
1220 | scm_whash_insert (scm_source_whash, ls, p); | |
1221 | #endif | |
1222 | return ls; | |
1223 | } | |
1224 | ||
1cc91f1b | 1225 | |
6dbd0af5 MD |
1226 | SCM |
1227 | scm_unmemocopy (x, env) | |
1228 | SCM x; | |
1229 | SCM env; | |
6dbd0af5 MD |
1230 | { |
1231 | if (SCM_NNULLP (env)) | |
1232 | /* Make a copy of the lowest frame to protect it from | |
1233 | modifications by SCM_IM_DEFINE */ | |
1234 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1235 | else | |
1236 | return unmemocopy (x, env); | |
1237 | } | |
1238 | ||
cf7c17e9 | 1239 | #ifndef SCM_RECKLESS |
1cc91f1b | 1240 | |
0f2d19dd JB |
1241 | int |
1242 | scm_badargsp (formals, args) | |
1243 | SCM formals; | |
1244 | SCM args; | |
0f2d19dd JB |
1245 | { |
1246 | while SCM_NIMP | |
1247 | (formals) | |
1248 | { | |
1249 | if SCM_NCONSP | |
1250 | (formals) return 0; | |
1251 | if SCM_IMP | |
1252 | (args) return 1; | |
1253 | formals = SCM_CDR (formals); | |
1254 | args = SCM_CDR (args); | |
1255 | } | |
1256 | return SCM_NNULLP (args) ? 1 : 0; | |
1257 | } | |
1258 | #endif | |
1259 | ||
1260 | ||
1261 | \f | |
6dbd0af5 | 1262 | SCM |
680ed4a8 | 1263 | scm_eval_args (l, env, proc) |
6dbd0af5 MD |
1264 | SCM l; |
1265 | SCM env; | |
680ed4a8 | 1266 | SCM proc; |
6dbd0af5 | 1267 | { |
680ed4a8 | 1268 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1269 | while (SCM_NIMP (l)) |
1270 | { | |
cf7c17e9 | 1271 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1272 | if (SCM_IMP (l)) |
1273 | goto wrongnumargs; | |
1274 | else if (SCM_CONSP (l)) | |
1275 | { | |
1276 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1277 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1278 | else |
1279 | res = EVALCELLCAR (l, env); | |
1280 | } | |
1281 | else if (SCM_TYP3 (l) == 1) | |
1282 | { | |
1283 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1284 | res = SCM_CAR (l); /* struct planted in code */ | |
1285 | } | |
1286 | else | |
1287 | goto wrongnumargs; | |
1288 | #else | |
1289 | res = EVALCAR (l, env); | |
1290 | #endif | |
1291 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1292 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1293 | l = SCM_CDR (l); |
1294 | } | |
cf7c17e9 | 1295 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1296 | if (SCM_NNULLP (l)) |
1297 | { | |
1298 | wrongnumargs: | |
1299 | scm_wrong_num_args (proc); | |
1300 | } | |
1301 | #endif | |
1302 | return results; | |
6dbd0af5 | 1303 | } |
c4ac4d88 JB |
1304 | |
1305 | ||
0f2d19dd JB |
1306 | #endif /* !DEVAL */ |
1307 | ||
6dbd0af5 MD |
1308 | |
1309 | /* SECTION: This code is specific for the debugging support. One | |
1310 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1311 | * defined. | |
1312 | */ | |
1313 | ||
1314 | #ifndef DEVAL | |
1315 | ||
1316 | #define SCM_APPLY scm_apply | |
1317 | #define PREP_APPLY(proc, args) | |
1318 | #define ENTER_APPLY | |
1319 | #define RETURN(x) return x; | |
b7ff98dd MD |
1320 | #ifdef STACK_CHECKING |
1321 | #ifndef NO_CEVAL_STACK_CHECKING | |
1322 | #define EVAL_STACK_CHECKING | |
1323 | #endif | |
6dbd0af5 MD |
1324 | #endif |
1325 | ||
1326 | #else /* !DEVAL */ | |
1327 | ||
0f2d19dd JB |
1328 | #undef SCM_CEVAL |
1329 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1330 | #undef SCM_APPLY | |
1331 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1332 | #undef PREP_APPLY |
1333 | #define PREP_APPLY(p, l) \ | |
1334 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1335 | #undef ENTER_APPLY | |
1336 | #define ENTER_APPLY \ | |
1337 | {\ | |
b7ff98dd | 1338 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1339 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1340 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1341 | {\ |
b7ff98dd | 1342 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
c6a4fbce | 1343 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1344 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1345 | {\ |
c0ab1b8d | 1346 | tmp = scm_make_debugobj (&debug);\ |
6dbd0af5 | 1347 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1348 | }\ |
6dbd0af5 MD |
1349 | else\ |
1350 | {\ | |
1351 | scm_make_cont (&tmp);\ | |
ca6ef71a | 1352 | if (!setjmp (SCM_JMPBUF (tmp)))\ |
6dbd0af5 MD |
1353 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
1354 | }\ | |
1355 | }\ | |
1356 | } | |
0f2d19dd JB |
1357 | #undef RETURN |
1358 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1359 | #ifdef STACK_CHECKING |
1360 | #ifndef EVAL_STACK_CHECKING | |
1361 | #define EVAL_STACK_CHECKING | |
1362 | #endif | |
6dbd0af5 MD |
1363 | #endif |
1364 | ||
1365 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1366 | * *fixme*: Although efficiency is important here, this state variable | |
1367 | * should probably not be a global. It should be related to the | |
1368 | * current repl. | |
1369 | */ | |
1370 | ||
1cc91f1b JB |
1371 | |
1372 | SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env)); | |
0f2d19dd | 1373 | |
1646d37b | 1374 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1375 | * information stack frame. It is accessed very often from the |
1376 | * debugging evaluator, so it should probably not be indirectly | |
1377 | * addressed. Better to save and restore it from the current root at | |
1378 | * any stack swaps. | |
1379 | */ | |
1380 | ||
1646d37b MD |
1381 | #ifndef USE_THREADS |
1382 | scm_debug_frame *scm_last_debug_frame; | |
1383 | #endif | |
6dbd0af5 MD |
1384 | |
1385 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1386 | * stack frames at each real stack frame. | |
1387 | */ | |
1388 | ||
1389 | int scm_debug_eframe_size; | |
1390 | ||
b7ff98dd | 1391 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1392 | |
a74145b8 MD |
1393 | int scm_eval_stack; |
1394 | ||
33b97402 | 1395 | scm_option scm_eval_opts[] = { |
a74145b8 | 1396 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1397 | }; |
1398 | ||
6dbd0af5 | 1399 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1400 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1401 | "*Flyweight representation of the stack at traps." }, | |
1402 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1403 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1404 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1405 | "Record procedure names at definition." }, | |
1406 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1407 | "Display backtrace in anti-chronological order." }, | |
4e646a03 MD |
1408 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1409 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1410 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1411 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1412 | "Maximal number of stored backtrace frames." }, | |
1413 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1414 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1415 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1416 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1417 | }; |
1418 | ||
1419 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1420 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1421 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1422 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1423 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1424 | }; |
1425 | ||
33b97402 MD |
1426 | SCM_PROC (s_eval_options_interface, "eval-options-interface", 0, 1, 0, scm_eval_options_interface); |
1427 | ||
1428 | SCM | |
8ecf1f13 | 1429 | scm_eval_options_interface (SCM setting) |
33b97402 MD |
1430 | { |
1431 | SCM ans; | |
1432 | SCM_DEFER_INTS; | |
1433 | ans = scm_options (setting, | |
1434 | scm_eval_opts, | |
1435 | SCM_N_EVAL_OPTIONS, | |
1436 | s_eval_options_interface); | |
a74145b8 | 1437 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1438 | SCM_ALLOW_INTS; |
1439 | return ans; | |
1440 | } | |
1441 | ||
1442 | SCM_PROC (s_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, scm_evaluator_traps); | |
1443 | ||
1444 | SCM | |
1445 | scm_evaluator_traps (setting) | |
1446 | SCM setting; | |
1447 | { | |
1448 | SCM ans; | |
1449 | SCM_DEFER_INTS; | |
1450 | ans = scm_options (setting, | |
1451 | scm_evaluator_trap_table, | |
1452 | SCM_N_EVALUATOR_TRAPS, | |
1453 | s_evaluator_traps); | |
1454 | SCM_RESET_DEBUG_MODE; | |
1455 | SCM_ALLOW_INTS | |
1456 | return ans; | |
1457 | } | |
1458 | ||
6dbd0af5 | 1459 | SCM |
680ed4a8 MD |
1460 | scm_deval_args (l, env, proc, lloc) |
1461 | SCM l, env, proc, *lloc; | |
0f2d19dd | 1462 | { |
680ed4a8 | 1463 | SCM *results = lloc, res; |
0f2d19dd JB |
1464 | while (SCM_NIMP (l)) |
1465 | { | |
cf7c17e9 | 1466 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1467 | if (SCM_IMP (l)) |
1468 | goto wrongnumargs; | |
1469 | else if (SCM_CONSP (l)) | |
1470 | { | |
1471 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1472 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1473 | else |
1474 | res = EVALCELLCAR (l, env); | |
1475 | } | |
1476 | else if (SCM_TYP3 (l) == 1) | |
1477 | { | |
1478 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1479 | res = SCM_CAR (l); /* struct planted in code */ | |
1480 | } | |
1481 | else | |
1482 | goto wrongnumargs; | |
1483 | #else | |
1484 | res = EVALCAR (l, env); | |
1485 | #endif | |
1486 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1487 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1488 | l = SCM_CDR (l); |
1489 | } | |
cf7c17e9 | 1490 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1491 | if (SCM_NNULLP (l)) |
1492 | { | |
1493 | wrongnumargs: | |
1494 | scm_wrong_num_args (proc); | |
1495 | } | |
1496 | #endif | |
1497 | return *results; | |
0f2d19dd JB |
1498 | } |
1499 | ||
6dbd0af5 MD |
1500 | #endif /* !DEVAL */ |
1501 | ||
1502 | ||
1503 | /* SECTION: Some local definitions for the evaluator. | |
1504 | */ | |
1505 | ||
1506 | #ifndef DEVAL | |
1507 | #ifdef SCM_FLOATS | |
1508 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1509 | #else | |
1510 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1511 | #endif | |
1512 | #endif /* DEVAL */ | |
1513 | ||
399dedcc | 1514 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1515 | |
1516 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1517 | * three heads. This code is compiled twice. | |
1518 | */ | |
1519 | ||
0f2d19dd | 1520 | #if 0 |
1cc91f1b | 1521 | |
0f2d19dd JB |
1522 | SCM |
1523 | scm_ceval (x, env) | |
1524 | SCM x; | |
1525 | SCM env; | |
0f2d19dd JB |
1526 | {} |
1527 | #endif | |
1528 | #if 0 | |
1cc91f1b | 1529 | |
0f2d19dd JB |
1530 | SCM |
1531 | scm_deval (x, env) | |
1532 | SCM x; | |
1533 | SCM env; | |
0f2d19dd JB |
1534 | {} |
1535 | #endif | |
1536 | ||
6dbd0af5 | 1537 | SCM |
0f2d19dd JB |
1538 | SCM_CEVAL (x, env) |
1539 | SCM x; | |
1540 | SCM env; | |
1541 | { | |
1542 | union | |
1543 | { | |
1544 | SCM *lloc; | |
1545 | SCM arg1; | |
f8769b1d | 1546 | } t; |
6dbd0af5 MD |
1547 | SCM proc, arg2; |
1548 | #ifdef DEVAL | |
c0ab1b8d JB |
1549 | scm_debug_frame debug; |
1550 | scm_debug_info *debug_info_end; | |
1646d37b | 1551 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1552 | debug.status = scm_debug_eframe_size; |
c0ab1b8d JB |
1553 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1554 | * sizeof (debug.vect[0])); | |
1555 | debug.info = debug.vect; | |
1556 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1557 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1558 | #endif |
b7ff98dd MD |
1559 | #ifdef EVAL_STACK_CHECKING |
1560 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1561 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1562 | { |
b7ff98dd | 1563 | #ifdef DEVAL |
6dbd0af5 MD |
1564 | debug.info->e.exp = x; |
1565 | debug.info->e.env = env; | |
b7ff98dd | 1566 | #endif |
6dbd0af5 MD |
1567 | scm_report_stack_overflow (); |
1568 | } | |
1569 | #endif | |
1570 | #ifdef DEVAL | |
1571 | goto start; | |
1572 | #endif | |
1573 | loopnoap: | |
1574 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1575 | loop: | |
1576 | #ifdef DEVAL | |
b7ff98dd MD |
1577 | SCM_CLEAR_ARGSREADY (debug); |
1578 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1579 | --debug.info; |
c0ab1b8d | 1580 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1581 | { |
b7ff98dd | 1582 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1583 | debug.info -= 2; |
1584 | } | |
1585 | start: | |
1586 | debug.info->e.exp = x; | |
1587 | debug.info->e.env = env; | |
b6d75948 | 1588 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1589 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1590 | { |
b7ff98dd MD |
1591 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1592 | SCM_SET_TAILREC (debug); | |
b7ff98dd | 1593 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1594 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1595 | else |
1596 | { | |
1597 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1598 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1599 | { |
1600 | x = SCM_THROW_VALUE (t.arg1); | |
1601 | if (SCM_IMP (x)) | |
1602 | { | |
1603 | RETURN (x); | |
1604 | } | |
1605 | else | |
1606 | /* This gives the possibility for the debugger to | |
1607 | modify the source expression before evaluation. */ | |
1608 | goto dispatch; | |
1609 | } | |
1610 | } | |
1611 | scm_ithrow (scm_i_enter_frame, | |
1612 | scm_cons2 (t.arg1, tail, | |
1613 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1614 | 0); | |
1615 | } | |
6dbd0af5 | 1616 | #endif |
e3173f93 | 1617 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1618 | dispatch: |
e3173f93 | 1619 | #endif |
9cb5124f | 1620 | SCM_TICK; |
0f2d19dd JB |
1621 | switch (SCM_TYP7 (x)) |
1622 | { | |
1623 | case scm_tcs_symbols: | |
1624 | /* Only happens when called at top level. | |
1625 | */ | |
1626 | x = scm_cons (x, SCM_UNDEFINED); | |
1627 | goto retval; | |
1628 | ||
1629 | case (127 & SCM_IM_AND): | |
1630 | x = SCM_CDR (x); | |
1631 | t.arg1 = x; | |
1632 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1633 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1634 | { | |
1635 | RETURN (SCM_BOOL_F); | |
1636 | } | |
1637 | else | |
1638 | x = t.arg1; | |
6dbd0af5 | 1639 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1640 | goto carloop; |
1641 | ||
1642 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1643 | cdrxnoap: |
1644 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1645 | cdrxbegin: |
1646 | x = SCM_CDR (x); | |
1647 | ||
1648 | begin: | |
1649 | t.arg1 = x; | |
1650 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1651 | { | |
1652 | SIDEVAL (SCM_CAR (x), env); | |
1653 | x = t.arg1; | |
1654 | } | |
1655 | ||
1656 | carloop: /* scm_eval car of last form in list */ | |
1657 | if (SCM_NCELLP (SCM_CAR (x))) | |
1658 | { | |
1659 | x = SCM_CAR (x); | |
6cb702da | 1660 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1661 | } |
1662 | ||
1663 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1664 | { | |
1665 | retval: | |
6dbd0af5 | 1666 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1667 | } |
1668 | ||
1669 | x = SCM_CAR (x); | |
1670 | goto loop; /* tail recurse */ | |
1671 | ||
1672 | ||
1673 | case (127 & SCM_IM_CASE): | |
1674 | x = SCM_CDR (x); | |
1675 | t.arg1 = EVALCAR (x, env); | |
1676 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1677 | { | |
1678 | proc = SCM_CAR (x); | |
1679 | if (scm_i_else == SCM_CAR (proc)) | |
1680 | { | |
1681 | x = SCM_CDR (proc); | |
6dbd0af5 | 1682 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1683 | goto begin; |
1684 | } | |
1685 | proc = SCM_CAR (proc); | |
1686 | while (SCM_NIMP (proc)) | |
1687 | { | |
1688 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1689 | { | |
1690 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1691 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1692 | goto begin; |
1693 | } | |
1694 | proc = SCM_CDR (proc); | |
1695 | } | |
1696 | } | |
6dbd0af5 | 1697 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1698 | |
1699 | ||
1700 | case (127 & SCM_IM_COND): | |
1701 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1702 | { | |
1703 | proc = SCM_CAR (x); | |
1704 | t.arg1 = EVALCAR (proc, env); | |
1705 | if (SCM_NFALSEP (t.arg1)) | |
1706 | { | |
1707 | x = SCM_CDR (proc); | |
6dbd0af5 | 1708 | if SCM_NULLP (x) |
0f2d19dd | 1709 | { |
6dbd0af5 | 1710 | RETURN (t.arg1) |
0f2d19dd JB |
1711 | } |
1712 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1713 | { |
1714 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1715 | goto begin; | |
1716 | } | |
0f2d19dd JB |
1717 | proc = SCM_CDR (x); |
1718 | proc = EVALCAR (proc, env); | |
1719 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1720 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1721 | ENTER_APPLY; | |
0f2d19dd JB |
1722 | goto evap1; |
1723 | } | |
1724 | } | |
6dbd0af5 | 1725 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1726 | |
1727 | ||
1728 | case (127 & SCM_IM_DO): | |
1729 | x = SCM_CDR (x); | |
1730 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1731 | t.arg1 = SCM_EOL; /* values */ | |
1732 | while (SCM_NIMP (proc)) | |
1733 | { | |
1734 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1735 | proc = SCM_CDR (proc); | |
1736 | } | |
e2806c10 | 1737 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1738 | x = SCM_CDR (SCM_CDR (x)); |
1739 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1740 | { | |
1741 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1742 | { | |
1743 | t.arg1 = SCM_CAR (proc); /* body */ | |
1744 | SIDEVAL (t.arg1, env); | |
1745 | } | |
1746 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1747 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1748 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1749 | } |
1750 | x = SCM_CDR (proc); | |
1751 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1752 | RETURN (SCM_UNSPECIFIED); |
1753 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1754 | goto begin; |
1755 | ||
1756 | ||
1757 | case (127 & SCM_IM_IF): | |
1758 | x = SCM_CDR (x); | |
1759 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1760 | x = SCM_CDR (x); | |
1761 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1762 | { | |
1763 | RETURN (SCM_UNSPECIFIED); | |
1764 | } | |
6dbd0af5 | 1765 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1766 | goto carloop; |
1767 | ||
1768 | ||
1769 | case (127 & SCM_IM_LET): | |
1770 | x = SCM_CDR (x); | |
1771 | proc = SCM_CAR (SCM_CDR (x)); | |
1772 | t.arg1 = SCM_EOL; | |
1773 | do | |
1774 | { | |
1775 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1776 | } | |
1777 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1778 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1779 | x = SCM_CDR (x); |
6dbd0af5 | 1780 | goto cdrxnoap; |
0f2d19dd JB |
1781 | |
1782 | ||
1783 | case (127 & SCM_IM_LETREC): | |
1784 | x = SCM_CDR (x); | |
e2806c10 | 1785 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1786 | x = SCM_CDR (x); |
1787 | proc = SCM_CAR (x); | |
1788 | t.arg1 = SCM_EOL; | |
1789 | do | |
1790 | { | |
1791 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1792 | } | |
1793 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 1794 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 1795 | goto cdrxnoap; |
0f2d19dd JB |
1796 | |
1797 | ||
1798 | case (127 & SCM_IM_LETSTAR): | |
1799 | x = SCM_CDR (x); | |
1800 | proc = SCM_CAR (x); | |
1801 | if (SCM_IMP (proc)) | |
1802 | { | |
e2806c10 | 1803 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1804 | goto cdrxnoap; |
0f2d19dd JB |
1805 | } |
1806 | do | |
1807 | { | |
1808 | t.arg1 = SCM_CAR (proc); | |
1809 | proc = SCM_CDR (proc); | |
e2806c10 | 1810 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1811 | } |
1812 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1813 | goto cdrxnoap; |
0f2d19dd JB |
1814 | |
1815 | case (127 & SCM_IM_OR): | |
1816 | x = SCM_CDR (x); | |
1817 | t.arg1 = x; | |
1818 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1819 | { | |
1820 | x = EVALCAR (x, env); | |
1821 | if (SCM_NFALSEP (x)) | |
1822 | { | |
1823 | RETURN (x); | |
1824 | } | |
1825 | x = t.arg1; | |
1826 | } | |
6dbd0af5 | 1827 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1828 | goto carloop; |
1829 | ||
1830 | ||
1831 | case (127 & SCM_IM_LAMBDA): | |
1832 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1833 | ||
1834 | ||
1835 | case (127 & SCM_IM_QUOTE): | |
1836 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1837 | ||
1838 | ||
89efbff4 | 1839 | case (127 & SCM_IM_SET_X): |
0f2d19dd JB |
1840 | x = SCM_CDR (x); |
1841 | proc = SCM_CAR (x); | |
6dbd0af5 | 1842 | switch (7 & (int) proc) |
0f2d19dd JB |
1843 | { |
1844 | case 0: | |
1845 | t.lloc = scm_lookupcar (x, env); | |
1846 | break; | |
1847 | case 1: | |
a23afe53 | 1848 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
1849 | break; |
1850 | #ifdef MEMOIZE_LOCALS | |
1851 | case 4: | |
1852 | t.lloc = scm_ilookup (proc, env); | |
1853 | break; | |
1854 | #endif | |
1855 | } | |
1856 | x = SCM_CDR (x); | |
1857 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1858 | #ifdef SICP |
1859 | RETURN (*t.lloc); | |
1860 | #else | |
1861 | RETURN (SCM_UNSPECIFIED); | |
1862 | #endif | |
1863 | ||
1864 | ||
1865 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1866 | x = SCM_CDR (x); | |
1867 | proc = SCM_CAR (x); | |
1868 | x = SCM_CDR (x); | |
1869 | x = evalcar (x, env); | |
6dbd0af5 | 1870 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
1871 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
1872 | { | |
1873 | t.arg1 = x; | |
1874 | proc: | |
1875 | if (SCM_CLOSUREP (t.arg1) | |
1876 | /* Only the first definition determines the name. */ | |
1877 | && (scm_procedure_property (t.arg1, scm_i_inner_name) | |
1878 | == SCM_BOOL_F)) | |
1879 | scm_set_procedure_property_x (t.arg1, scm_i_inner_name, proc); | |
1880 | else if (SCM_TYP16 (t.arg1) == scm_tc16_macro | |
1881 | && SCM_CDR (t.arg1) != t.arg1) | |
1882 | { | |
1883 | t.arg1 = SCM_CDR (t.arg1); | |
1884 | goto proc; | |
1885 | } | |
1886 | } | |
6dbd0af5 | 1887 | #endif |
0f2d19dd JB |
1888 | env = SCM_CAR (env); |
1889 | SCM_DEFER_INTS; | |
a23afe53 MD |
1890 | SCM_SETCAR (env, scm_cons (proc, SCM_CAR (env))); |
1891 | SCM_SETCDR (env, scm_cons (x, SCM_CDR (env))); | |
0f2d19dd JB |
1892 | SCM_ALLOW_INTS; |
1893 | RETURN (SCM_UNSPECIFIED); | |
1894 | ||
1895 | ||
0f2d19dd JB |
1896 | /* new syntactic forms go here. */ |
1897 | case (127 & SCM_MAKISYM (0)): | |
1898 | proc = SCM_CAR (x); | |
1899 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1900 | switch SCM_ISYMNUM (proc) | |
1901 | { | |
1902 | #if 0 | |
1903 | case (SCM_ISYMNUM (IM_VREF)): | |
1904 | { | |
1905 | SCM var; | |
1906 | var = SCM_CAR (SCM_CDR (x)); | |
1907 | RETURN (SCM_CDR(var)); | |
1908 | } | |
1909 | case (SCM_ISYMNUM (IM_VSET)): | |
1910 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1911 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1912 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1913 | #endif |
1914 | ||
1915 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1916 | proc = SCM_CDR (x); | |
1917 | proc = EVALCAR (proc, env); | |
1918 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1919 | if (SCM_CLOSUREP (proc)) | |
1920 | { | |
1609038c | 1921 | SCM argl, tl; |
6dbd0af5 | 1922 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1923 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1924 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1925 | #ifdef DEVAL |
1926 | debug.info->a.args = t.arg1; | |
1927 | #endif | |
cf7c17e9 | 1928 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
1929 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
1930 | goto wrongnumargs; | |
1931 | #endif | |
c79450dd | 1932 | ENTER_APPLY; |
1609038c MD |
1933 | /* Copy argument list */ |
1934 | if (SCM_IMP (t.arg1)) | |
1935 | argl = t.arg1; | |
1936 | else | |
1937 | { | |
1938 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
1939 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
1940 | && SCM_CONSP (t.arg1)) | |
1941 | { | |
1942 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
1943 | SCM_UNSPECIFIED)); | |
1944 | tl = SCM_CDR (tl); | |
1945 | } | |
1946 | SCM_SETCDR (tl, t.arg1); | |
1947 | } | |
1948 | ||
1949 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
1950 | x = SCM_CODE (proc); |
1951 | goto cdrxbegin; | |
1952 | } | |
1953 | proc = scm_i_apply; | |
1954 | goto evapply; | |
1955 | ||
1956 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1957 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1958 | if (setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
1959 | { |
1960 | SCM val; | |
1961 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1962 | RETURN (val); |
0f2d19dd JB |
1963 | } |
1964 | proc = SCM_CDR (x); | |
1965 | proc = evalcar (proc, env); | |
1966 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1967 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1968 | ENTER_APPLY; | |
0f2d19dd JB |
1969 | goto evap1; |
1970 | ||
89efbff4 MD |
1971 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
1972 | { | |
1973 | int i, end, mask; | |
1974 | mask = -1; | |
1975 | proc = SCM_CDR (x); | |
1976 | i = 0; | |
1977 | end = SCM_LENGTH (proc); | |
1978 | find_method: | |
1979 | do | |
1980 | { | |
1981 | t.arg1 = SCM_CDDAR (env); | |
1982 | arg2 = SCM_VELTS (proc)[i]; | |
1983 | do | |
1984 | { | |
1985 | if (scm_class_of (SCM_CAR (t.arg1)) != SCM_CAR (arg2)) | |
1986 | goto next_method; | |
1987 | t.arg1 = SCM_CDR (t.arg1); | |
1988 | arg2 = SCM_CDR (arg2); | |
1989 | } | |
1990 | while (SCM_NIMP (t.arg1)); | |
1991 | x = SCM_CAR (arg2); | |
1992 | env = scm_cons (SCM_CAR (env), SCM_CDR (arg2)); | |
1993 | goto begin; | |
1994 | next_method: | |
1995 | i = (i + 1) & mask; | |
1996 | } while (i != end); | |
1997 | scm_memoize_method (x, SCM_CDAR (env)); | |
1998 | goto loop; | |
1999 | ||
2000 | case (SCM_ISYMNUM (SCM_IM_HASH_DISPATCH)): | |
2001 | { | |
2002 | int hashset = SCM_INUM (SCM_CADR (x)); | |
2003 | mask = SCM_INUM (SCM_CADDR (x)); | |
2004 | proc = SCM_CDDDR (x); | |
2005 | i = 0; | |
2006 | t.arg1 = SCM_CDDAR (env); | |
2007 | do | |
2008 | { | |
2009 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1)))[scm_si_hashsets + hashset]; | |
2010 | t.arg1 = SCM_CDR (t.arg1); | |
2011 | } | |
2012 | while (SCM_NIMP (t.arg1)); | |
2013 | i &= mask; | |
2014 | end = i; | |
2015 | } | |
2016 | goto find_method; | |
2017 | } | |
2018 | ||
0f2d19dd JB |
2019 | default: |
2020 | goto badfun; | |
2021 | } | |
2022 | ||
2023 | default: | |
2024 | proc = x; | |
2025 | badfun: | |
f5bf2977 | 2026 | /* scm_everr (x, env,...) */ |
523f5266 GH |
2027 | scm_misc_error (NULL, |
2028 | "Wrong type to apply: %S", | |
2029 | scm_listify (proc, SCM_UNDEFINED)); | |
0f2d19dd JB |
2030 | case scm_tc7_vector: |
2031 | case scm_tc7_wvect: | |
2032 | case scm_tc7_bvect: | |
2033 | case scm_tc7_byvect: | |
2034 | case scm_tc7_svect: | |
2035 | case scm_tc7_ivect: | |
2036 | case scm_tc7_uvect: | |
2037 | case scm_tc7_fvect: | |
2038 | case scm_tc7_dvect: | |
2039 | case scm_tc7_cvect: | |
2040 | #ifdef LONGLONGS | |
2041 | case scm_tc7_llvect: | |
2042 | #endif | |
2043 | case scm_tc7_string: | |
0f2d19dd | 2044 | case scm_tc7_substring: |
0f2d19dd JB |
2045 | case scm_tc7_smob: |
2046 | case scm_tcs_closures: | |
224822be MD |
2047 | #ifdef CCLO |
2048 | case scm_tc7_cclo: | |
2049 | #endif | |
89efbff4 | 2050 | case scm_tc7_pws: |
0f2d19dd JB |
2051 | case scm_tcs_subrs: |
2052 | RETURN (x); | |
2053 | ||
2054 | #ifdef MEMOIZE_LOCALS | |
2055 | case (127 & SCM_ILOC00): | |
2056 | proc = *scm_ilookup (SCM_CAR (x), env); | |
2057 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2058 | #ifndef SCM_RECKLESS |
2059 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2060 | goto checkargs; |
2061 | #endif | |
2062 | #endif | |
2063 | break; | |
2064 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2065 | ||
2066 | ||
2067 | case scm_tcs_cons_gloc: | |
2068 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
aa00bd1e MD |
2069 | if (proc == 0) |
2070 | /* This is a struct implanted in the code, not a gloc. */ | |
2071 | RETURN (x); | |
0f2d19dd | 2072 | SCM_ASRTGO (SCM_NIMP (proc), badfun); |
cf7c17e9 JB |
2073 | #ifndef SCM_RECKLESS |
2074 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2075 | goto checkargs; |
2076 | #endif | |
2077 | #endif | |
2078 | break; | |
2079 | ||
2080 | ||
2081 | case scm_tcs_cons_nimcar: | |
2082 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2083 | { | |
f8769b1d MV |
2084 | #ifdef USE_THREADS |
2085 | t.lloc = scm_lookupcar1 (x, env); | |
2086 | if (t.lloc == NULL) | |
2087 | { | |
2088 | /* we have lost the race, start again. */ | |
2089 | goto dispatch; | |
2090 | } | |
2091 | proc = *t.lloc; | |
2092 | #else | |
0f2d19dd | 2093 | proc = *scm_lookupcar (x, env); |
f8769b1d MV |
2094 | #endif |
2095 | ||
0f2d19dd JB |
2096 | if (SCM_IMP (proc)) |
2097 | { | |
2098 | unmemocar (x, env); | |
2099 | goto badfun; | |
2100 | } | |
2101 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2102 | { | |
2103 | unmemocar (x, env); | |
2104 | ||
2105 | handle_a_macro: | |
368bf056 | 2106 | #ifdef DEVAL |
7c354052 MD |
2107 | /* Set a flag during macro expansion so that macro |
2108 | application frames can be deleted from the backtrace. */ | |
2109 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2110 | #endif |
f8769b1d MV |
2111 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2112 | scm_cons (env, scm_listofnull)); | |
2113 | ||
7c354052 MD |
2114 | #ifdef DEVAL |
2115 | SCM_CLEAR_MACROEXP (debug); | |
2116 | #endif | |
0f2d19dd JB |
2117 | switch ((int) (SCM_CAR (proc) >> 16)) |
2118 | { | |
2119 | case 2: | |
2120 | if (scm_ilength (t.arg1) <= 0) | |
2121 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2122 | #ifdef DEVAL |
2123 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2124 | { | |
f8769b1d | 2125 | |
6dbd0af5 MD |
2126 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2127 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2128 | /* Prevent memoizing result of define macro */ | |
2129 | { | |
2130 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2131 | scm_set_source_properties_x (debug.info->e.exp, | |
2132 | scm_source_properties (x)); | |
2133 | } | |
2134 | #endif | |
2135 | SCM_DEFER_INTS; | |
a23afe53 MD |
2136 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2137 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2138 | SCM_ALLOW_INTS; |
2139 | goto dispatch; | |
2140 | } | |
2141 | /* Prevent memoizing of debug info expression. */ | |
2142 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2143 | scm_set_source_properties_x (debug.info->e.exp, | |
2144 | scm_source_properties (x)); | |
2145 | #endif | |
0f2d19dd | 2146 | SCM_DEFER_INTS; |
a23afe53 MD |
2147 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2148 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2149 | SCM_ALLOW_INTS; |
6dbd0af5 | 2150 | goto loopnoap; |
0f2d19dd JB |
2151 | case 1: |
2152 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2153 | goto loopnoap; |
0f2d19dd JB |
2154 | case 0: |
2155 | RETURN (t.arg1); | |
2156 | } | |
2157 | } | |
2158 | } | |
2159 | else | |
2160 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2161 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2162 | #ifndef SCM_RECKLESS |
2163 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2164 | checkargs: |
2165 | #endif | |
2166 | if (SCM_CLOSUREP (proc)) | |
2167 | { | |
2168 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2169 | t.arg1 = SCM_CDR (x); | |
2170 | while (SCM_NIMP (arg2)) | |
2171 | { | |
2172 | if (SCM_NCONSP (arg2)) | |
2173 | goto evapply; | |
2174 | if (SCM_IMP (t.arg1)) | |
2175 | goto umwrongnumargs; | |
2176 | arg2 = SCM_CDR (arg2); | |
2177 | t.arg1 = SCM_CDR (t.arg1); | |
2178 | } | |
2179 | if (SCM_NNULLP (t.arg1)) | |
2180 | goto umwrongnumargs; | |
2181 | } | |
2182 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2183 | goto handle_a_macro; | |
2184 | #endif | |
2185 | } | |
2186 | ||
2187 | ||
6dbd0af5 MD |
2188 | evapply: |
2189 | PREP_APPLY (proc, SCM_EOL); | |
2190 | if (SCM_NULLP (SCM_CDR (x))) { | |
2191 | ENTER_APPLY; | |
89efbff4 | 2192 | evap0: |
0f2d19dd JB |
2193 | switch (SCM_TYP7 (proc)) |
2194 | { /* no arguments given */ | |
2195 | case scm_tc7_subr_0: | |
2196 | RETURN (SCM_SUBRF (proc) ()); | |
2197 | case scm_tc7_subr_1o: | |
2198 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2199 | case scm_tc7_lsubr: | |
2200 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2201 | case scm_tc7_rpsubr: | |
2202 | RETURN (SCM_BOOL_T); | |
2203 | case scm_tc7_asubr: | |
2204 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2205 | #ifdef CCLO |
0f2d19dd JB |
2206 | case scm_tc7_cclo: |
2207 | t.arg1 = proc; | |
2208 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2209 | #ifdef DEVAL |
2210 | debug.info->a.proc = proc; | |
2211 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2212 | #endif | |
0f2d19dd | 2213 | goto evap1; |
6dbd0af5 | 2214 | #endif |
89efbff4 MD |
2215 | case scm_tc7_pws: |
2216 | proc = SCM_PROCEDURE (proc); | |
2217 | #ifdef DEVAL | |
2218 | debug.info->a.proc = proc; | |
2219 | #endif | |
2220 | goto evap0; | |
0f2d19dd JB |
2221 | case scm_tcs_closures: |
2222 | x = SCM_CODE (proc); | |
e2806c10 | 2223 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2224 | goto cdrxbegin; |
da7f71d7 | 2225 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2226 | if (!SCM_I_OPERATORP (proc)) |
2227 | goto badfun; | |
2228 | else | |
da7f71d7 MD |
2229 | { |
2230 | x = (SCM_I_ENTITYP (proc) | |
2231 | ? SCM_ENTITY_PROC_0 (proc) | |
2232 | : SCM_OPERATOR_PROC_0 (proc)); | |
2233 | if (SCM_NIMP (x)) | |
33b97402 MD |
2234 | { |
2235 | if (SCM_TYP7 (x) == scm_tc7_subr_1) | |
2236 | RETURN (SCM_SUBRF (x) (proc)) | |
2237 | else if (SCM_CLOSUREP (x)) | |
2238 | { | |
2239 | t.arg1 = proc; | |
2240 | proc = x; | |
da7f71d7 | 2241 | #ifdef DEVAL |
33b97402 MD |
2242 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); |
2243 | debug.info->a.proc = proc; | |
da7f71d7 | 2244 | #endif |
33b97402 MD |
2245 | goto clos1; |
2246 | } | |
2247 | } | |
da7f71d7 MD |
2248 | /* Fall through. */ |
2249 | } | |
0f2d19dd JB |
2250 | case scm_tc7_contin: |
2251 | case scm_tc7_subr_1: | |
2252 | case scm_tc7_subr_2: | |
2253 | case scm_tc7_subr_2o: | |
2254 | case scm_tc7_cxr: | |
2255 | case scm_tc7_subr_3: | |
2256 | case scm_tc7_lsubr_2: | |
2257 | umwrongnumargs: | |
2258 | unmemocar (x, env); | |
2259 | wrongnumargs: | |
f5bf2977 GH |
2260 | /* scm_everr (x, env,...) */ |
2261 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2262 | default: |
2263 | /* handle macros here */ | |
2264 | goto badfun; | |
2265 | } | |
6dbd0af5 | 2266 | } |
0f2d19dd JB |
2267 | |
2268 | /* must handle macros by here */ | |
2269 | x = SCM_CDR (x); | |
cf7c17e9 | 2270 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2271 | if (SCM_IMP (x)) |
2272 | goto wrongnumargs; | |
680ed4a8 MD |
2273 | else if (SCM_CONSP (x)) |
2274 | { | |
2275 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2276 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2277 | else |
2278 | t.arg1 = EVALCELLCAR (x, env); | |
2279 | } | |
2280 | else if (SCM_TYP3 (x) == 1) | |
2281 | { | |
2282 | if ((t.arg1 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2283 | t.arg1 = SCM_CAR (x); /* struct planted in code */ | |
2284 | } | |
2285 | else | |
2286 | goto wrongnumargs; | |
2287 | #else | |
0f2d19dd | 2288 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2289 | #endif |
6dbd0af5 MD |
2290 | #ifdef DEVAL |
2291 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2292 | #endif | |
0f2d19dd JB |
2293 | x = SCM_CDR (x); |
2294 | if (SCM_NULLP (x)) | |
2295 | { | |
6dbd0af5 | 2296 | ENTER_APPLY; |
0f2d19dd JB |
2297 | evap1: |
2298 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2299 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2300 | case scm_tc7_subr_2o: |
2301 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2302 | case scm_tc7_subr_1: | |
2303 | case scm_tc7_subr_1o: | |
2304 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2305 | case scm_tc7_cxr: | |
2306 | #ifdef SCM_FLOATS | |
2307 | if (SCM_SUBRF (proc)) | |
2308 | { | |
2309 | if (SCM_INUMP (t.arg1)) | |
2310 | { | |
2311 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2312 | 0.0)); | |
2313 | } | |
2314 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2315 | if (SCM_REALP (t.arg1)) | |
2316 | { | |
2317 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2318 | } | |
2319 | #ifdef SCM_BIGDIG | |
2320 | if (SCM_BIGP (t.arg1)) | |
2321 | { | |
2322 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2323 | } | |
2324 | #endif | |
2325 | floerr: | |
2326 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2327 | } | |
2328 | #endif | |
2329 | proc = (SCM) SCM_SNAME (proc); | |
2330 | { | |
2331 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2332 | while ('c' != *--chrs) | |
2333 | { | |
2334 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
2335 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2336 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2337 | } | |
2338 | RETURN (t.arg1); | |
2339 | } | |
2340 | case scm_tc7_rpsubr: | |
2341 | RETURN (SCM_BOOL_T); | |
2342 | case scm_tc7_asubr: | |
2343 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2344 | case scm_tc7_lsubr: | |
2345 | #ifdef DEVAL | |
6dbd0af5 | 2346 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2347 | #else |
2348 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2349 | #endif | |
6dbd0af5 | 2350 | #ifdef CCLO |
0f2d19dd JB |
2351 | case scm_tc7_cclo: |
2352 | arg2 = t.arg1; | |
2353 | t.arg1 = proc; | |
2354 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2355 | #ifdef DEVAL |
2356 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2357 | debug.info->a.proc = proc; | |
2358 | #endif | |
0f2d19dd | 2359 | goto evap2; |
6dbd0af5 | 2360 | #endif |
89efbff4 MD |
2361 | case scm_tc7_pws: |
2362 | proc = SCM_PROCEDURE (proc); | |
2363 | #ifdef DEVAL | |
2364 | debug.info->a.proc = proc; | |
2365 | #endif | |
2366 | goto evap1; | |
0f2d19dd | 2367 | case scm_tcs_closures: |
da7f71d7 | 2368 | clos1: |
0f2d19dd JB |
2369 | x = SCM_CODE (proc); |
2370 | #ifdef DEVAL | |
e2806c10 | 2371 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2372 | #else |
e2806c10 | 2373 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2374 | #endif |
2375 | goto cdrxbegin; | |
65e41721 MD |
2376 | case scm_tc7_contin: |
2377 | scm_call_continuation (proc, t.arg1); | |
0c32d76c | 2378 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2379 | if (!SCM_I_OPERATORP (proc)) |
2380 | goto badfun; | |
2381 | else | |
0c32d76c | 2382 | { |
da7f71d7 MD |
2383 | x = (SCM_I_ENTITYP (proc) |
2384 | ? SCM_ENTITY_PROC_1 (proc) | |
2385 | : SCM_OPERATOR_PROC_1 (proc)); | |
2386 | if (SCM_NIMP (x)) | |
33b97402 MD |
2387 | { |
2388 | if (SCM_TYP7 (x) == scm_tc7_subr_2) | |
2389 | RETURN (SCM_SUBRF (x) (proc, t.arg1)) | |
2390 | else if (SCM_CLOSUREP (x)) | |
2391 | { | |
2392 | arg2 = t.arg1; | |
2393 | t.arg1 = proc; | |
2394 | proc = x; | |
0c32d76c | 2395 | #ifdef DEVAL |
33b97402 MD |
2396 | debug.info->a.args = scm_cons (t.arg1, |
2397 | debug.info->a.args); | |
2398 | debug.info->a.proc = proc; | |
0c32d76c | 2399 | #endif |
33b97402 MD |
2400 | goto clos2; |
2401 | } | |
2402 | } | |
0c32d76c MD |
2403 | /* Fall through. */ |
2404 | } | |
0f2d19dd JB |
2405 | case scm_tc7_subr_2: |
2406 | case scm_tc7_subr_0: | |
2407 | case scm_tc7_subr_3: | |
2408 | case scm_tc7_lsubr_2: | |
2409 | goto wrongnumargs; | |
2410 | default: | |
2411 | goto badfun; | |
2412 | } | |
2413 | } | |
cf7c17e9 | 2414 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2415 | if (SCM_IMP (x)) |
2416 | goto wrongnumargs; | |
680ed4a8 MD |
2417 | else if (SCM_CONSP (x)) |
2418 | { | |
2419 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2420 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2421 | else |
2422 | arg2 = EVALCELLCAR (x, env); | |
2423 | } | |
2424 | else if (SCM_TYP3 (x) == 1) | |
2425 | { | |
2426 | if ((arg2 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2427 | arg2 = SCM_CAR (x); /* struct planted in code */ | |
2428 | } | |
2429 | else | |
2430 | goto wrongnumargs; | |
2431 | #else | |
2432 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2433 | #endif |
2434 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2435 | #ifdef DEVAL |
2436 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2437 | #endif | |
0f2d19dd JB |
2438 | x = SCM_CDR (x); |
2439 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2440 | ENTER_APPLY; |
0f2d19dd JB |
2441 | #ifdef CCLO |
2442 | evap2: | |
2443 | #endif | |
6dbd0af5 MD |
2444 | switch (SCM_TYP7 (proc)) |
2445 | { /* have two arguments */ | |
2446 | case scm_tc7_subr_2: | |
2447 | case scm_tc7_subr_2o: | |
2448 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2449 | case scm_tc7_lsubr: | |
0f2d19dd | 2450 | #ifdef DEVAL |
6dbd0af5 MD |
2451 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2452 | #else | |
2453 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2454 | #endif |
6dbd0af5 MD |
2455 | case scm_tc7_lsubr_2: |
2456 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2457 | case scm_tc7_rpsubr: | |
2458 | case scm_tc7_asubr: | |
2459 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2460 | #ifdef CCLO | |
2461 | cclon: | |
2462 | case scm_tc7_cclo: | |
0f2d19dd | 2463 | #ifdef DEVAL |
6dbd0af5 MD |
2464 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2465 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2466 | #else |
6dbd0af5 MD |
2467 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2468 | scm_cons2 (t.arg1, arg2, | |
680ed4a8 | 2469 | scm_cons (scm_eval_args (x, env, proc), |
da7f71d7 | 2470 | SCM_EOL)))); |
0f2d19dd | 2471 | #endif |
6dbd0af5 MD |
2472 | /* case scm_tc7_cclo: |
2473 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2474 | arg2 = t.arg1; | |
2475 | t.arg1 = proc; | |
2476 | proc = SCM_CCLO_SUBR(proc); | |
2477 | goto evap3; */ | |
2478 | #endif | |
89efbff4 MD |
2479 | case scm_tc7_pws: |
2480 | proc = SCM_PROCEDURE (proc); | |
2481 | #ifdef DEVAL | |
2482 | debug.info->a.proc = proc; | |
2483 | #endif | |
2484 | goto evap2; | |
0c32d76c | 2485 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2486 | if (!SCM_I_OPERATORP (proc)) |
2487 | goto badfun; | |
2488 | else | |
0c32d76c | 2489 | { |
da7f71d7 MD |
2490 | x = (SCM_I_ENTITYP (proc) |
2491 | ? SCM_ENTITY_PROC_2 (proc) | |
2492 | : SCM_OPERATOR_PROC_2 (proc)); | |
2493 | if (SCM_NIMP (x)) | |
33b97402 MD |
2494 | { |
2495 | if (SCM_TYP7 (x) == scm_tc7_subr_3) | |
2496 | RETURN (SCM_SUBRF (x) (proc, t.arg1, arg2)) | |
2497 | else if (SCM_CLOSUREP (x)) | |
2498 | { | |
0c32d76c | 2499 | #ifdef DEVAL |
33b97402 MD |
2500 | SCM_SET_ARGSREADY (debug); |
2501 | debug.info->a.args = scm_cons (proc, | |
2502 | debug.info->a.args); | |
2503 | debug.info->a.proc = x; | |
2504 | #endif | |
2505 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (x)), | |
2506 | scm_cons2 (proc, t.arg1, | |
65e41721 | 2507 | scm_cons (arg2, SCM_EOL)), |
33b97402 MD |
2508 | SCM_ENV (x)); |
2509 | x = SCM_CODE (x); | |
2510 | goto cdrxbegin; | |
2511 | } | |
2512 | } | |
0c32d76c MD |
2513 | /* Fall through. */ |
2514 | } | |
6dbd0af5 MD |
2515 | case scm_tc7_subr_0: |
2516 | case scm_tc7_cxr: | |
2517 | case scm_tc7_subr_1o: | |
2518 | case scm_tc7_subr_1: | |
2519 | case scm_tc7_subr_3: | |
2520 | case scm_tc7_contin: | |
2521 | goto wrongnumargs; | |
2522 | default: | |
2523 | goto badfun; | |
2524 | case scm_tcs_closures: | |
0c32d76c | 2525 | clos2: |
0f2d19dd | 2526 | #ifdef DEVAL |
da7f71d7 MD |
2527 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2528 | debug.info->a.args, | |
2529 | SCM_ENV (proc)); | |
0f2d19dd | 2530 | #else |
da7f71d7 MD |
2531 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2532 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2533 | #endif |
6dbd0af5 MD |
2534 | x = SCM_CODE (proc); |
2535 | goto cdrxbegin; | |
2536 | } | |
0f2d19dd | 2537 | } |
cf7c17e9 | 2538 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2539 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2540 | goto wrongnumargs; | |
2541 | #endif | |
0f2d19dd | 2542 | #ifdef DEVAL |
6dbd0af5 | 2543 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2544 | scm_deval_args (x, env, proc, |
2545 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2546 | #endif |
6dbd0af5 | 2547 | ENTER_APPLY; |
89efbff4 | 2548 | evap3: |
6dbd0af5 MD |
2549 | switch (SCM_TYP7 (proc)) |
2550 | { /* have 3 or more arguments */ | |
0f2d19dd | 2551 | #ifdef DEVAL |
6dbd0af5 MD |
2552 | case scm_tc7_subr_3: |
2553 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2554 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2555 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 2556 | case scm_tc7_asubr: |
399dedcc MD |
2557 | #ifdef BUILTIN_RPASUBR |
2558 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2559 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2560 | do |
2561 | { | |
2562 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
2563 | arg2 = SCM_CDR (arg2); | |
2564 | } | |
2565 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
2566 | RETURN (t.arg1) |
2567 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2568 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2569 | #ifdef BUILTIN_RPASUBR |
2570 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2571 | RETURN (SCM_BOOL_F) | |
2572 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2573 | do |
2574 | { | |
2575 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
2576 | RETURN (SCM_BOOL_F) | |
2577 | arg2 = SCM_CAR (t.arg1); | |
2578 | t.arg1 = SCM_CDR (t.arg1); | |
2579 | } | |
2580 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
2581 | RETURN (SCM_BOOL_T) |
2582 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
2583 | RETURN (SCM_APPLY (proc, t.arg1, |
2584 | scm_acons (arg2, | |
2585 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
2586 | SCM_EOL))) | |
71d3aa6d | 2587 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 2588 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
2589 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2590 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
2591 | case scm_tc7_lsubr: |
2592 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2593 | #ifdef CCLO |
6dbd0af5 MD |
2594 | case scm_tc7_cclo: |
2595 | goto cclon; | |
0f2d19dd | 2596 | #endif |
89efbff4 MD |
2597 | case scm_tc7_pws: |
2598 | proc = SCM_PROCEDURE (proc); | |
2599 | debug.info->a.proc = proc; | |
2600 | goto evap3; | |
6dbd0af5 | 2601 | case scm_tcs_closures: |
b7ff98dd | 2602 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2603 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2604 | debug.info->a.args, |
2605 | SCM_ENV (proc)); | |
2606 | x = SCM_CODE (proc); | |
2607 | goto cdrxbegin; | |
2608 | #else /* DEVAL */ | |
2609 | case scm_tc7_subr_3: | |
2610 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2611 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2612 | case scm_tc7_asubr: | |
399dedcc | 2613 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
2614 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
2615 | do | |
2616 | { | |
2617 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2618 | x = SCM_CDR(x); | |
2619 | } | |
2620 | while (SCM_NIMP (x)); | |
399dedcc MD |
2621 | RETURN (t.arg1) |
2622 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2623 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2624 | #ifdef BUILTIN_RPASUBR |
2625 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2626 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
2627 | do |
2628 | { | |
2629 | t.arg1 = EVALCAR (x, env); | |
2630 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
2631 | RETURN (SCM_BOOL_F) | |
2632 | arg2 = t.arg1; | |
2633 | x = SCM_CDR (x); | |
2634 | } | |
2635 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
2636 | RETURN (SCM_BOOL_T) |
2637 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 2638 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
2639 | scm_acons (arg2, |
2640 | scm_eval_args (x, env, proc), | |
2641 | SCM_EOL))); | |
71d3aa6d | 2642 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 2643 | case scm_tc7_lsubr_2: |
680ed4a8 | 2644 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 2645 | case scm_tc7_lsubr: |
680ed4a8 MD |
2646 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
2647 | arg2, | |
2648 | scm_eval_args (x, env, proc)))); | |
0f2d19dd | 2649 | #ifdef CCLO |
6dbd0af5 MD |
2650 | case scm_tc7_cclo: |
2651 | goto cclon; | |
0f2d19dd | 2652 | #endif |
89efbff4 MD |
2653 | case scm_tc7_pws: |
2654 | proc = SCM_PROCEDURE (proc); | |
2655 | goto evap3; | |
6dbd0af5 MD |
2656 | case scm_tcs_closures: |
2657 | #ifdef DEVAL | |
b7ff98dd | 2658 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2659 | #endif |
e2806c10 | 2660 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
2661 | scm_cons2 (t.arg1, |
2662 | arg2, | |
2663 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
2664 | SCM_ENV (proc)); |
2665 | x = SCM_CODE (proc); | |
2666 | goto cdrxbegin; | |
0f2d19dd | 2667 | #endif /* DEVAL */ |
0c32d76c | 2668 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2669 | if (!SCM_I_OPERATORP (proc)) |
2670 | goto badfun; | |
2671 | else | |
da7f71d7 MD |
2672 | { |
2673 | SCM p = (SCM_I_ENTITYP (proc) | |
2674 | ? SCM_ENTITY_PROC_3 (proc) | |
2675 | : SCM_OPERATOR_PROC_3 (proc)); | |
2676 | if (SCM_NIMP (p)) | |
33b97402 MD |
2677 | { |
2678 | if (SCM_TYP7 (p) == scm_tc7_lsubr_2) | |
da7f71d7 | 2679 | #ifdef DEVAL |
33b97402 MD |
2680 | RETURN (SCM_SUBRF (p) (proc, t.arg1, |
2681 | scm_cons (arg2, SCM_CDDR (debug.info->a.args)))) | |
da7f71d7 | 2682 | #else |
33b97402 MD |
2683 | RETURN (SCM_SUBRF (p) (proc, t.arg1, |
2684 | scm_cons (arg2, | |
680ed4a8 | 2685 | scm_eval_args (x, env, proc)))) |
da7f71d7 | 2686 | #endif |
33b97402 MD |
2687 | else if (SCM_CLOSUREP (p)) |
2688 | { | |
da7f71d7 | 2689 | #ifdef DEVAL |
33b97402 MD |
2690 | SCM_SET_ARGSREADY (debug); |
2691 | debug.info->a.args = scm_cons (proc, debug.info->a.args); | |
2692 | debug.info->a.proc = p; | |
2693 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)), | |
2694 | scm_cons2 (proc, t.arg1, | |
2695 | scm_cons (arg2, | |
2696 | SCM_CDDDR (debug.info->a.args))), | |
2697 | SCM_ENV (p)); | |
da7f71d7 | 2698 | #else |
33b97402 MD |
2699 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)), |
2700 | scm_cons2 (proc, t.arg1, | |
2701 | scm_cons (arg2, | |
680ed4a8 | 2702 | scm_eval_args (x, env, proc))), |
33b97402 MD |
2703 | SCM_ENV (p)); |
2704 | #endif | |
2705 | x = SCM_CODE (p); | |
2706 | goto cdrxbegin; | |
2707 | } | |
2708 | } | |
da7f71d7 MD |
2709 | /* Fall through. */ |
2710 | } | |
6dbd0af5 MD |
2711 | case scm_tc7_subr_2: |
2712 | case scm_tc7_subr_1o: | |
2713 | case scm_tc7_subr_2o: | |
2714 | case scm_tc7_subr_0: | |
2715 | case scm_tc7_cxr: | |
2716 | case scm_tc7_subr_1: | |
2717 | case scm_tc7_contin: | |
2718 | goto wrongnumargs; | |
2719 | default: | |
2720 | goto badfun; | |
2721 | } | |
0f2d19dd JB |
2722 | } |
2723 | #ifdef DEVAL | |
6dbd0af5 | 2724 | exit: |
b6d75948 | 2725 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 2726 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2727 | { |
b7ff98dd MD |
2728 | SCM_CLEAR_TRACED_FRAME (debug); |
2729 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2730 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2731 | else |
2732 | { | |
2733 | scm_make_cont (&t.arg1); | |
ca6ef71a | 2734 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
2735 | { |
2736 | proc = SCM_THROW_VALUE (t.arg1); | |
2737 | goto ret; | |
2738 | } | |
2739 | } | |
2740 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2741 | } | |
2742 | ret: | |
1646d37b | 2743 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2744 | return proc; |
2745 | #endif | |
2746 | } | |
2747 | ||
6dbd0af5 MD |
2748 | |
2749 | /* SECTION: This code is compiled once. | |
2750 | */ | |
2751 | ||
0f2d19dd JB |
2752 | #ifndef DEVAL |
2753 | ||
82a2622a | 2754 | /* This code processes the arguments to apply: |
b145c172 JB |
2755 | |
2756 | (apply PROC ARG1 ... ARGS) | |
2757 | ||
82a2622a JB |
2758 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
2759 | ... arguments onto the front of ARGS, and returns the resulting | |
2760 | list. Note that ARGS is a list; thus, the argument to this | |
2761 | function is a list whose last element is a list. | |
2762 | ||
2763 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
2764 | result. apply:nconc2last takes care of building the list of |
2765 | arguments, given (ARG1 ... ARGS). | |
2766 | ||
82a2622a JB |
2767 | Rather than do new consing, apply:nconc2last destroys its argument. |
2768 | On that topic, this code came into my care with the following | |
2769 | beautifully cryptic comment on that topic: "This will only screw | |
2770 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
2771 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 2772 | |
0f2d19dd | 2773 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); |
1cc91f1b | 2774 | |
0f2d19dd JB |
2775 | SCM |
2776 | scm_nconc2last (lst) | |
2777 | SCM lst; | |
0f2d19dd JB |
2778 | { |
2779 | SCM *lloc; | |
b145c172 | 2780 | SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2781 | lloc = &lst; |
2782 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 2783 | lloc = SCM_CDRLOC (*lloc); |
b145c172 | 2784 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2785 | *lloc = SCM_CAR (*lloc); |
2786 | return lst; | |
2787 | } | |
2788 | ||
2789 | #endif /* !DEVAL */ | |
2790 | ||
6dbd0af5 MD |
2791 | |
2792 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2793 | * It is compiled twice. | |
2794 | */ | |
2795 | ||
0f2d19dd | 2796 | #if 0 |
1cc91f1b | 2797 | |
0f2d19dd JB |
2798 | SCM |
2799 | scm_apply (proc, arg1, args) | |
2800 | SCM proc; | |
2801 | SCM arg1; | |
2802 | SCM args; | |
0f2d19dd JB |
2803 | {} |
2804 | #endif | |
2805 | ||
2806 | #if 0 | |
1cc91f1b | 2807 | |
0f2d19dd JB |
2808 | SCM |
2809 | scm_dapply (proc, arg1, args) | |
2810 | SCM proc; | |
2811 | SCM arg1; | |
2812 | SCM args; | |
0f2d19dd JB |
2813 | {} |
2814 | #endif | |
2815 | ||
1cc91f1b | 2816 | |
82a2622a JB |
2817 | /* Apply a function to a list of arguments. |
2818 | ||
2819 | This function is exported to the Scheme level as taking two | |
2820 | required arguments and a tail argument, as if it were: | |
2821 | (lambda (proc arg1 . args) ...) | |
2822 | Thus, if you just have a list of arguments to pass to a procedure, | |
2823 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
2824 | args, pass the first as ARG1, then cons any remaining fixed args | |
2825 | onto the front of your argument list, and pass that as ARGS. */ | |
2826 | ||
0f2d19dd JB |
2827 | SCM |
2828 | SCM_APPLY (proc, arg1, args) | |
2829 | SCM proc; | |
2830 | SCM arg1; | |
2831 | SCM args; | |
0f2d19dd JB |
2832 | { |
2833 | #ifdef DEBUG_EXTENSIONS | |
2834 | #ifdef DEVAL | |
6dbd0af5 | 2835 | scm_debug_frame debug; |
c0ab1b8d | 2836 | scm_debug_info debug_vect_body; |
1646d37b | 2837 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2838 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 2839 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
2840 | debug.vect[0].a.proc = proc; |
2841 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2842 | scm_last_debug_frame = &debug; |
0f2d19dd | 2843 | #else |
b7ff98dd | 2844 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2845 | return scm_dapply (proc, arg1, args); |
2846 | #endif | |
2847 | #endif | |
2848 | ||
2849 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
2850 | |
2851 | /* If ARGS is the empty list, then we're calling apply with only two | |
2852 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
2853 | the case, futz with things so that ARG1 is the first argument to | |
2854 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
2855 | rest. |
2856 | ||
2857 | Setting the debug apply frame args this way is pretty messy. | |
2858 | Perhaps we should store arg1 and args directly in the frame as | |
2859 | received, and let scm_frame_arguments unpack them, because that's | |
2860 | a relatively rare operation. This works for now; if the Guile | |
2861 | developer archives are still around, see Mikael's post of | |
2862 | 11-Apr-97. */ | |
0f2d19dd JB |
2863 | if (SCM_NULLP (args)) |
2864 | { | |
2865 | if (SCM_NULLP (arg1)) | |
30000774 JB |
2866 | { |
2867 | arg1 = SCM_UNDEFINED; | |
2868 | #ifdef DEVAL | |
2869 | debug.vect[0].a.args = SCM_EOL; | |
2870 | #endif | |
2871 | } | |
0f2d19dd JB |
2872 | else |
2873 | { | |
30000774 JB |
2874 | #ifdef DEVAL |
2875 | debug.vect[0].a.args = arg1; | |
2876 | #endif | |
0f2d19dd JB |
2877 | args = SCM_CDR (arg1); |
2878 | arg1 = SCM_CAR (arg1); | |
2879 | } | |
2880 | } | |
2881 | else | |
2882 | { | |
82a2622a | 2883 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 2884 | args = scm_nconc2last (args); |
30000774 JB |
2885 | #ifdef DEVAL |
2886 | debug.vect[0].a.args = scm_cons (arg1, args); | |
2887 | #endif | |
0f2d19dd | 2888 | } |
0f2d19dd | 2889 | #ifdef DEVAL |
b6d75948 | 2890 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
2891 | { |
2892 | SCM tmp; | |
b7ff98dd | 2893 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 2894 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2895 | else |
2896 | { | |
2897 | scm_make_cont (&tmp); | |
ca6ef71a | 2898 | if (setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
2899 | goto entap; |
2900 | } | |
2901 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2902 | } | |
2903 | entap: | |
2904 | ENTER_APPLY; | |
2905 | #endif | |
2906 | #ifdef CCLO | |
2907 | tail: | |
0f2d19dd JB |
2908 | #endif |
2909 | switch (SCM_TYP7 (proc)) | |
2910 | { | |
2911 | case scm_tc7_subr_2o: | |
2912 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2913 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2914 | case scm_tc7_subr_2: | |
269861c7 MD |
2915 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
2916 | wrongnumargs); | |
0f2d19dd JB |
2917 | args = SCM_CAR (args); |
2918 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2919 | case scm_tc7_subr_0: | |
2920 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2921 | RETURN (SCM_SUBRF (proc) ()) | |
2922 | case scm_tc7_subr_1: | |
2923 | case scm_tc7_subr_1o: | |
2924 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2925 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2926 | case scm_tc7_cxr: | |
2927 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2928 | #ifdef SCM_FLOATS | |
2929 | if (SCM_SUBRF (proc)) | |
2930 | { | |
6dbd0af5 MD |
2931 | if (SCM_INUMP (arg1)) |
2932 | { | |
2933 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2934 | } | |
0f2d19dd | 2935 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2936 | if (SCM_REALP (arg1)) |
2937 | { | |
2938 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2939 | } | |
0f2d19dd JB |
2940 | #ifdef SCM_BIGDIG |
2941 | if SCM_BIGP | |
2942 | (arg1) | |
2943 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) | |
2944 | #endif | |
2945 | floerr: | |
2946 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2947 | } | |
2948 | #endif | |
2949 | proc = (SCM) SCM_SNAME (proc); | |
2950 | { | |
2951 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2952 | while ('c' != *--chrs) | |
2953 | { | |
2954 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2955 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2956 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2957 | } | |
2958 | RETURN (arg1) | |
2959 | } | |
2960 | case scm_tc7_subr_3: | |
2961 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2962 | case scm_tc7_lsubr: | |
2963 | #ifdef DEVAL | |
6dbd0af5 | 2964 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2965 | #else |
2966 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2967 | #endif | |
2968 | case scm_tc7_lsubr_2: | |
2969 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2970 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2971 | case scm_tc7_asubr: | |
2972 | if (SCM_NULLP (args)) | |
2973 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2974 | while (SCM_NIMP (args)) | |
2975 | { | |
2976 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2977 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2978 | args = SCM_CDR (args); | |
2979 | } | |
2980 | RETURN (arg1); | |
2981 | case scm_tc7_rpsubr: | |
2982 | if (SCM_NULLP (args)) | |
2983 | RETURN (SCM_BOOL_T); | |
2984 | while (SCM_NIMP (args)) | |
2985 | { | |
2986 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2987 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2988 | RETURN (SCM_BOOL_F); | |
2989 | arg1 = SCM_CAR (args); | |
2990 | args = SCM_CDR (args); | |
2991 | } | |
2992 | RETURN (SCM_BOOL_T); | |
2993 | case scm_tcs_closures: | |
2994 | #ifdef DEVAL | |
6dbd0af5 | 2995 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2996 | #else |
2997 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2998 | #endif | |
cf7c17e9 | 2999 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3000 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
3001 | goto wrongnumargs; | |
3002 | #endif | |
1609038c MD |
3003 | |
3004 | /* Copy argument list */ | |
3005 | if (SCM_IMP (arg1)) | |
3006 | args = arg1; | |
3007 | else | |
3008 | { | |
3009 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
3010 | while (SCM_NIMP (arg1 = SCM_CDR (arg1)) | |
3011 | && SCM_CONSP (arg1)) | |
3012 | { | |
3013 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3014 | SCM_UNSPECIFIED)); | |
3015 | tl = SCM_CDR (tl); | |
3016 | } | |
3017 | SCM_SETCDR (tl, arg1); | |
3018 | } | |
3019 | ||
3020 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
0f2d19dd JB |
3021 | proc = SCM_CODE (proc); |
3022 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
3023 | arg1 = EVALCAR (proc, args); | |
3024 | RETURN (arg1); | |
3025 | case scm_tc7_contin: | |
3026 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3027 | scm_call_continuation (proc, arg1); | |
3028 | #ifdef CCLO | |
3029 | case scm_tc7_cclo: | |
3030 | #ifdef DEVAL | |
6dbd0af5 MD |
3031 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3032 | arg1 = proc; | |
3033 | proc = SCM_CCLO_SUBR (proc); | |
3034 | debug.vect[0].a.proc = proc; | |
3035 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3036 | #else |
3037 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3038 | arg1 = proc; |
3039 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3040 | #endif |
0f2d19dd JB |
3041 | goto tail; |
3042 | #endif | |
89efbff4 MD |
3043 | case scm_tc7_pws: |
3044 | proc = SCM_PROCEDURE (proc); | |
3045 | #ifdef DEVAL | |
3046 | debug.vect[0].a.proc = proc; | |
3047 | #endif | |
3048 | goto tail; | |
0c32d76c | 3049 | case scm_tcs_cons_gloc: |
9b07e212 MD |
3050 | if (!SCM_I_OPERATORP (proc)) |
3051 | goto badproc; | |
3052 | else | |
da7f71d7 MD |
3053 | { |
3054 | #ifdef DEVAL | |
3055 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3056 | #else | |
3057 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3058 | #endif | |
3059 | arg1 = proc; | |
3060 | proc = (SCM_NULLP (args) | |
3061 | ? (SCM_I_ENTITYP (proc) | |
3062 | ? SCM_ENTITY_PROC_0 (proc) | |
3063 | : SCM_OPERATOR_PROC_0 (proc)) | |
3064 | : SCM_NULLP (SCM_CDR (args)) | |
3065 | ? (SCM_I_ENTITYP (proc) | |
3066 | ? SCM_ENTITY_PROC_1 (proc) | |
3067 | : SCM_OPERATOR_PROC_1 (proc)) | |
3068 | : SCM_NULLP (SCM_CDDR (args)) | |
3069 | ? (SCM_I_ENTITYP (proc) | |
3070 | ? SCM_ENTITY_PROC_2 (proc) | |
3071 | : SCM_OPERATOR_PROC_2 (proc)) | |
3072 | : (SCM_I_ENTITYP (proc) | |
3073 | ? SCM_ENTITY_PROC_3 (proc) | |
3074 | : SCM_OPERATOR_PROC_3 (proc))); | |
3075 | #ifdef DEVAL | |
3076 | debug.vect[0].a.proc = proc; | |
3077 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3078 | #endif | |
3079 | goto tail; | |
3080 | } | |
0f2d19dd | 3081 | wrongnumargs: |
f5bf2977 | 3082 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3083 | default: |
3084 | badproc: | |
3085 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3086 | RETURN (arg1); | |
3087 | } | |
3088 | #ifdef DEVAL | |
6dbd0af5 | 3089 | exit: |
b6d75948 | 3090 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3091 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3092 | { |
b7ff98dd MD |
3093 | SCM_CLEAR_TRACED_FRAME (debug); |
3094 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3095 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3096 | else |
3097 | { | |
3098 | scm_make_cont (&arg1); | |
ca6ef71a | 3099 | if (setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
3100 | { |
3101 | proc = SCM_THROW_VALUE (arg1); | |
3102 | goto ret; | |
3103 | } | |
3104 | } | |
3105 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
3106 | } | |
3107 | ret: | |
1646d37b | 3108 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3109 | return proc; |
3110 | #endif | |
3111 | } | |
3112 | ||
6dbd0af5 MD |
3113 | |
3114 | /* SECTION: The rest of this file is only read once. | |
3115 | */ | |
3116 | ||
0f2d19dd JB |
3117 | #ifndef DEVAL |
3118 | ||
6cb702da | 3119 | SCM_PROC (s_map, "map", 2, 0, 1, scm_map); |
1cc91f1b | 3120 | |
368bf056 MD |
3121 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3122 | sequentially, starting with the first element(s). This is used in | |
3123 | evalext.c where the Scheme procedure `serial-map', which guarantees | |
3124 | sequential behaviour, is implemented using scm_map. If the | |
3125 | behaviour changes, we need to update `serial-map'. | |
3126 | */ | |
3127 | ||
0f2d19dd JB |
3128 | SCM |
3129 | scm_map (proc, arg1, args) | |
3130 | SCM proc; | |
3131 | SCM arg1; | |
3132 | SCM args; | |
0f2d19dd JB |
3133 | { |
3134 | long i; | |
3135 | SCM res = SCM_EOL; | |
3136 | SCM *pres = &res; | |
3137 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3138 | ||
3139 | if (SCM_NULLP (arg1)) | |
3140 | return res; | |
3141 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map); | |
3142 | if (SCM_NULLP (args)) | |
3143 | { | |
3144 | while (SCM_NIMP (arg1)) | |
3145 | { | |
3146 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
3147 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
a23afe53 | 3148 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3149 | arg1 = SCM_CDR (arg1); |
3150 | } | |
3151 | return res; | |
3152 | } | |
3153 | args = scm_vector (scm_cons (arg1, args)); | |
3154 | ve = SCM_VELTS (args); | |
cf7c17e9 | 3155 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3156 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) |
3157 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map); | |
3158 | #endif | |
3159 | while (1) | |
3160 | { | |
3161 | arg1 = SCM_EOL; | |
3162 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3163 | { | |
3164 | if SCM_IMP | |
3165 | (ve[i]) return res; | |
3166 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3167 | ve[i] = SCM_CDR (ve[i]); | |
3168 | } | |
3169 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3170 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3171 | } |
3172 | } | |
3173 | ||
3174 | ||
3175 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
1cc91f1b | 3176 | |
0f2d19dd JB |
3177 | SCM |
3178 | scm_for_each (proc, arg1, args) | |
3179 | SCM proc; | |
3180 | SCM arg1; | |
3181 | SCM args; | |
0f2d19dd JB |
3182 | { |
3183 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3184 | long i; | |
3185 | if SCM_NULLP (arg1) | |
3186 | return SCM_UNSPECIFIED; | |
3187 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each); | |
3188 | if SCM_NULLP (args) | |
3189 | { | |
3190 | while SCM_NIMP (arg1) | |
3191 | { | |
3192 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
3193 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
3194 | arg1 = SCM_CDR (arg1); | |
3195 | } | |
3196 | return SCM_UNSPECIFIED; | |
3197 | } | |
3198 | args = scm_vector (scm_cons (arg1, args)); | |
3199 | ve = SCM_VELTS (args); | |
cf7c17e9 | 3200 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
3201 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) |
3202 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each); | |
3203 | #endif | |
3204 | while (1) | |
3205 | { | |
3206 | arg1 = SCM_EOL; | |
3207 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3208 | { | |
3209 | if SCM_IMP | |
3210 | (ve[i]) return SCM_UNSPECIFIED; | |
3211 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3212 | ve[i] = SCM_CDR (ve[i]); | |
3213 | } | |
3214 | scm_apply (proc, arg1, SCM_EOL); | |
3215 | } | |
3216 | } | |
3217 | ||
3218 | ||
1cc91f1b | 3219 | |
0f2d19dd JB |
3220 | SCM |
3221 | scm_closure (code, env) | |
3222 | SCM code; | |
3223 | SCM env; | |
0f2d19dd JB |
3224 | { |
3225 | register SCM z; | |
3226 | SCM_NEWCELL (z); | |
3227 | SCM_SETCODE (z, code); | |
a23afe53 | 3228 | SCM_SETENV (z, env); |
0f2d19dd JB |
3229 | return z; |
3230 | } | |
3231 | ||
3232 | ||
3233 | long scm_tc16_promise; | |
1cc91f1b | 3234 | |
0f2d19dd JB |
3235 | SCM |
3236 | scm_makprom (code) | |
3237 | SCM code; | |
0f2d19dd JB |
3238 | { |
3239 | register SCM z; | |
3240 | SCM_NEWCELL (z); | |
f83e2737 | 3241 | SCM_ENTER_A_SECTION; |
a23afe53 MD |
3242 | SCM_SETCDR (z, code); |
3243 | SCM_SETCAR (z, scm_tc16_promise); | |
f83e2737 | 3244 | SCM_EXIT_A_SECTION; |
0f2d19dd JB |
3245 | return z; |
3246 | } | |
3247 | ||
3248 | ||
1cc91f1b JB |
3249 | |
3250 | static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
3251 | ||
0f2d19dd | 3252 | static int |
19402679 | 3253 | prinprom (exp, port, pstate) |
0f2d19dd JB |
3254 | SCM exp; |
3255 | SCM port; | |
19402679 | 3256 | scm_print_state *pstate; |
0f2d19dd | 3257 | { |
19402679 | 3258 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3259 | scm_puts ("#<promise ", port); |
19402679 MD |
3260 | SCM_SET_WRITINGP (pstate, 1); |
3261 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3262 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3263 | scm_putc ('>', port); |
0f2d19dd JB |
3264 | return !0; |
3265 | } | |
3266 | ||
3267 | ||
0f2d19dd | 3268 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); |
1cc91f1b | 3269 | |
0f2d19dd JB |
3270 | SCM |
3271 | scm_force (x) | |
3272 | SCM x; | |
0f2d19dd | 3273 | { |
eed6e03e JB |
3274 | SCM_ASSERT (SCM_NIMP(x) && SCM_TYP16 (x) == scm_tc16_promise, |
3275 | x, SCM_ARG1, s_force); | |
0f2d19dd JB |
3276 | if (!((1L << 16) & SCM_CAR (x))) |
3277 | { | |
3278 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
3279 | if (!((1L << 16) & SCM_CAR (x))) | |
3280 | { | |
3281 | SCM_DEFER_INTS; | |
a23afe53 MD |
3282 | SCM_SETCDR (x, ans); |
3283 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3284 | SCM_ALLOW_INTS; |
3285 | } | |
3286 | } | |
3287 | return SCM_CDR (x); | |
3288 | } | |
3289 | ||
3290 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
1cc91f1b | 3291 | |
0f2d19dd JB |
3292 | SCM |
3293 | scm_promise_p (x) | |
3294 | SCM x; | |
0f2d19dd JB |
3295 | { |
3296 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
3297 | ? SCM_BOOL_T | |
3298 | : SCM_BOOL_F); | |
3299 | } | |
3300 | ||
3301 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
1cc91f1b | 3302 | |
0f2d19dd JB |
3303 | SCM |
3304 | scm_copy_tree (obj) | |
3305 | SCM obj; | |
0f2d19dd JB |
3306 | { |
3307 | SCM ans, tl; | |
3308 | if SCM_IMP | |
3309 | (obj) return obj; | |
3910272e MD |
3310 | if (SCM_VECTORP (obj)) |
3311 | { | |
3312 | scm_sizet i = SCM_LENGTH (obj); | |
3313 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); | |
3314 | while (i--) | |
3315 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3316 | return ans; | |
3317 | } | |
0f2d19dd JB |
3318 | if SCM_NCONSP (obj) |
3319 | return obj; | |
3320 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
3321 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
067affe3 MD |
3322 | { |
3323 | /* Copy source properties possibly associated with head pair. */ | |
3324 | SCM p = scm_whash_lookup (scm_source_whash, obj); | |
3325 | if (SCM_NIMP (p)) | |
3326 | scm_whash_insert (scm_source_whash, ans, p); | |
3327 | } | |
0f2d19dd | 3328 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) |
a23afe53 MD |
3329 | { |
3330 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3331 | SCM_UNSPECIFIED)); | |
3332 | tl = SCM_CDR (tl); | |
3333 | } | |
3334 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3335 | return ans; |
3336 | } | |
3337 | ||
1cc91f1b | 3338 | |
0f2d19dd JB |
3339 | SCM |
3340 | scm_eval_3 (obj, copyp, env) | |
3341 | SCM obj; | |
3342 | int copyp; | |
3343 | SCM env; | |
0f2d19dd JB |
3344 | { |
3345 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3346 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3347 | else if (copyp) | |
3348 | obj = scm_copy_tree (obj); | |
6cb702da | 3349 | return SCM_XEVAL (obj, env); |
0f2d19dd JB |
3350 | } |
3351 | ||
0f2d19dd | 3352 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); |
1cc91f1b | 3353 | |
0f2d19dd JB |
3354 | SCM |
3355 | scm_eval2 (obj, env_thunk) | |
3356 | SCM obj; | |
3357 | SCM env_thunk; | |
0f2d19dd | 3358 | { |
6bcb0868 | 3359 | return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk)); |
0f2d19dd JB |
3360 | } |
3361 | ||
3362 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
1cc91f1b | 3363 | |
0f2d19dd JB |
3364 | SCM |
3365 | scm_eval (obj) | |
3366 | SCM obj; | |
0f2d19dd | 3367 | { |
6bcb0868 MD |
3368 | return scm_eval_3 (obj, |
3369 | 1, | |
3370 | scm_top_level_env | |
3371 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3372 | } |
3373 | ||
11f77bfc | 3374 | /* SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); */ |
1cc91f1b | 3375 | |
0f2d19dd JB |
3376 | SCM |
3377 | scm_eval_x (obj) | |
3378 | SCM obj; | |
0f2d19dd | 3379 | { |
6bcb0868 MD |
3380 | return scm_eval_3 (obj, |
3381 | 0, | |
3382 | scm_top_level_env | |
3383 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3384 | } |
3385 | ||
3eeba8d4 | 3386 | static const scm_smobfuns promsmob = {scm_markcdr, scm_free0, prinprom}; |
0f2d19dd | 3387 | |
6dbd0af5 MD |
3388 | |
3389 | /* At this point, scm_deval and scm_dapply are generated. | |
3390 | */ | |
3391 | ||
0f2d19dd | 3392 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3393 | # define DEVAL |
3394 | # include "eval.c" | |
0f2d19dd JB |
3395 | #endif |
3396 | ||
3397 | ||
1cc91f1b | 3398 | |
0f2d19dd JB |
3399 | void |
3400 | scm_init_eval () | |
0f2d19dd | 3401 | { |
33b97402 MD |
3402 | scm_init_opts (scm_evaluator_traps, |
3403 | scm_evaluator_trap_table, | |
3404 | SCM_N_EVALUATOR_TRAPS); | |
3405 | scm_init_opts (scm_eval_options_interface, | |
3406 | scm_eval_opts, | |
3407 | SCM_N_EVAL_OPTIONS); | |
3408 | ||
0f2d19dd | 3409 | scm_tc16_promise = scm_newsmob (&promsmob); |
b8229a3b | 3410 | |
0f2d19dd JB |
3411 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
3412 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
3413 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
3414 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3415 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3416 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3417 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
3418 | ||
3419 | /* acros */ | |
0f2d19dd JB |
3420 | /* end of acros */ |
3421 | ||
dc19d1d2 JB |
3422 | scm_top_level_lookup_closure_var = |
3423 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3424 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3425 | |
6dbd0af5 MD |
3426 | #ifdef DEBUG_EXTENSIONS |
3427 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
3428 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3429 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3430 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
3431 | #endif | |
3432 | ||
0f2d19dd | 3433 | #include "eval.x" |
25eaf21a MD |
3434 | |
3435 | scm_add_feature ("delay"); | |
0f2d19dd | 3436 | } |
0f2d19dd | 3437 | |
6dbd0af5 | 3438 | #endif /* !DEVAL */ |