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d9c393f5 | 1 | /* Copyright (C) 1995,1996,1997,1998, 1999 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 | 137 | #define SCM_CEVAL scm_ceval |
ff467021 | 138 | #define SIDEVAL(x, env) if (SCM_NIMP(x)) SCM_CEVAL((x), (env)) |
6cb702da | 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 | } | |
ff467021 | 680 | if (SCM_NNULLP (proc)) |
6cb702da | 681 | badforms:scm_wta (xorig, scm_s_formals, "lambda"); |
0f2d19dd | 682 | memlambda: |
a23afe53 | 683 | bodycheck (xorig, SCM_CDRLOC (x), "lambda"); |
0f2d19dd JB |
684 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); |
685 | } | |
686 | ||
b8229a3b MS |
687 | SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar); |
688 | SCM_SYMBOL(scm_i_letstar,s_letstar); | |
0f2d19dd | 689 | |
1cc91f1b | 690 | |
0f2d19dd JB |
691 | SCM |
692 | scm_m_letstar (xorig, env) | |
693 | SCM xorig; | |
694 | SCM env; | |
0f2d19dd JB |
695 | { |
696 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
697 | int len = scm_ilength (x); | |
b8229a3b | 698 | SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar); |
0f2d19dd | 699 | proc = SCM_CAR (x); |
b8229a3b | 700 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar); |
ff467021 | 701 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
702 | { |
703 | arg1 = SCM_CAR (proc); | |
b8229a3b | 704 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar); |
6cb702da | 705 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 706 | xorig, scm_s_variable, s_letstar); |
0f2d19dd | 707 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 708 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
709 | proc = SCM_CDR (proc); |
710 | } | |
711 | x = scm_cons (vars, SCM_CDR (x)); | |
b8229a3b | 712 | bodycheck (xorig, SCM_CDRLOC (x), s_letstar); |
0f2d19dd JB |
713 | return scm_cons (SCM_IM_LETSTAR, x); |
714 | } | |
715 | ||
716 | /* DO gets the most radically altered syntax | |
717 | (do ((<var1> <init1> <step1>) | |
718 | (<var2> <init2>) | |
719 | ... ) | |
720 | (<test> <return>) | |
721 | <body>) | |
722 | ;; becomes | |
723 | (do_mem (varn ... var2 var1) | |
724 | (<init1> <init2> ... <initn>) | |
725 | (<test> <return>) | |
726 | (<body>) | |
727 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
728 | */ | |
729 | ||
b8229a3b MS |
730 | SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do); |
731 | SCM_SYMBOL(scm_i_do, s_do); | |
1cc91f1b | 732 | |
0f2d19dd JB |
733 | SCM |
734 | scm_m_do (xorig, env) | |
735 | SCM xorig; | |
736 | SCM env; | |
0f2d19dd JB |
737 | { |
738 | SCM x = SCM_CDR (xorig), arg1, proc; | |
739 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
740 | SCM *initloc = &inits, *steploc = &steps; | |
741 | int len = scm_ilength (x); | |
6cb702da | 742 | SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do"); |
0f2d19dd | 743 | proc = SCM_CAR (x); |
6cb702da | 744 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do"); |
ff467021 | 745 | while (SCM_NIMP(proc)) |
0f2d19dd JB |
746 | { |
747 | arg1 = SCM_CAR (proc); | |
748 | len = scm_ilength (arg1); | |
6cb702da MD |
749 | SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do"); |
750 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), | |
751 | xorig, scm_s_variable, "do"); | |
0f2d19dd JB |
752 | /* vars reversed here, inits and steps reversed at evaluation */ |
753 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
754 | arg1 = SCM_CDR (arg1); | |
755 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 756 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
757 | arg1 = SCM_CDR (arg1); |
758 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 759 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
760 | proc = SCM_CDR (proc); |
761 | } | |
762 | x = SCM_CDR (x); | |
6cb702da | 763 | SCM_ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, scm_s_test, "do"); |
0f2d19dd JB |
764 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); |
765 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 766 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
0f2d19dd JB |
767 | return scm_cons (SCM_IM_DO, x); |
768 | } | |
769 | ||
6dbd0af5 MD |
770 | /* evalcar is small version of inline EVALCAR when we don't care about |
771 | * speed | |
772 | */ | |
773 | #define evalcar scm_eval_car | |
0f2d19dd | 774 | |
1cc91f1b JB |
775 | |
776 | static SCM iqq SCM_P ((SCM form, SCM env, int depth)); | |
777 | ||
b8229a3b MS |
778 | SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote); |
779 | SCM_GLOBAL_SYMBOL(scm_i_quasiquote, s_quasiquote); | |
780 | ||
781 | SCM | |
782 | scm_m_quasiquote (xorig, env) | |
783 | SCM xorig; | |
784 | SCM env; | |
785 | { | |
786 | SCM x = SCM_CDR (xorig); | |
787 | SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote); | |
788 | return iqq (SCM_CAR (x), env, 1); | |
789 | } | |
790 | ||
791 | ||
0f2d19dd JB |
792 | static SCM |
793 | iqq (form, env, depth) | |
794 | SCM form; | |
795 | SCM env; | |
796 | int depth; | |
0f2d19dd JB |
797 | { |
798 | SCM tmp; | |
799 | int edepth = depth; | |
ff467021 JB |
800 | if (SCM_IMP(form)) |
801 | return form; | |
0f2d19dd JB |
802 | if (SCM_VECTORP (form)) |
803 | { | |
804 | long i = SCM_LENGTH (form); | |
805 | SCM *data = SCM_VELTS (form); | |
806 | tmp = SCM_EOL; | |
807 | for (; --i >= 0;) | |
808 | tmp = scm_cons (data[i], tmp); | |
809 | return scm_vector (iqq (tmp, env, depth)); | |
810 | } | |
ff467021 JB |
811 | if (SCM_NCONSP(form)) |
812 | return form; | |
0f2d19dd JB |
813 | tmp = SCM_CAR (form); |
814 | if (scm_i_quasiquote == tmp) | |
815 | { | |
816 | depth++; | |
817 | goto label; | |
818 | } | |
819 | if (scm_i_unquote == tmp) | |
820 | { | |
821 | --depth; | |
822 | label: | |
823 | form = SCM_CDR (form); | |
0f2d19dd JB |
824 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), |
825 | form, SCM_ARG1, s_quasiquote); | |
826 | if (0 == depth) | |
827 | return evalcar (form, env); | |
828 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
829 | } | |
830 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
831 | { | |
832 | tmp = SCM_CDR (tmp); | |
833 | if (0 == --edepth) | |
834 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
835 | } | |
836 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
837 | } | |
838 | ||
839 | /* Here are acros which return values rather than code. */ | |
840 | ||
b8229a3b | 841 | SCM_SYNTAX(s_delay, "delay", scm_makacro, scm_m_delay); |
1cc91f1b | 842 | |
0f2d19dd JB |
843 | SCM |
844 | scm_m_delay (xorig, env) | |
845 | SCM xorig; | |
846 | SCM env; | |
0f2d19dd | 847 | { |
6cb702da | 848 | SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay); |
0f2d19dd JB |
849 | xorig = SCM_CDR (xorig); |
850 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
851 | env)); | |
852 | } | |
853 | ||
1cc91f1b | 854 | |
b8229a3b MS |
855 | SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define); |
856 | SCM_SYMBOL(scm_i_define, s_define); | |
1cc91f1b | 857 | |
0f2d19dd JB |
858 | SCM |
859 | scm_m_define (x, env) | |
860 | SCM x; | |
861 | SCM env; | |
0f2d19dd JB |
862 | { |
863 | SCM proc, arg1 = x; | |
864 | x = SCM_CDR (x); | |
6cb702da | 865 | /* SCM_ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ |
b8229a3b | 866 | SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define); |
0f2d19dd JB |
867 | proc = SCM_CAR (x); |
868 | x = SCM_CDR (x); | |
869 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
870 | { /* nested define syntax */ | |
871 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
872 | proc = SCM_CAR (proc); | |
873 | } | |
6cb702da | 874 | SCM_ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), |
b8229a3b MS |
875 | arg1, scm_s_variable, s_define); |
876 | SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define); | |
0f2d19dd JB |
877 | if (SCM_TOP_LEVEL (env)) |
878 | { | |
879 | x = evalcar (x, env); | |
6dbd0af5 | 880 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
881 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
882 | { | |
883 | arg1 = x; | |
884 | proc: | |
885 | if (SCM_CLOSUREP (arg1) | |
886 | /* Only the first definition determines the name. */ | |
887 | && scm_procedure_property (arg1, scm_i_name) == SCM_BOOL_F) | |
888 | scm_set_procedure_property_x (arg1, scm_i_name, proc); | |
889 | else if (SCM_TYP16 (arg1) == scm_tc16_macro | |
890 | && SCM_CDR (arg1) != arg1) | |
891 | { | |
892 | arg1 = SCM_CDR (arg1); | |
893 | goto proc; | |
894 | } | |
895 | } | |
6dbd0af5 | 896 | #endif |
6cb702da | 897 | arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T); |
0f2d19dd | 898 | #if 0 |
cf7c17e9 | 899 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
900 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) |
901 | && (SCM_CDR (arg1) != x)) | |
902 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
903 | else | |
904 | #endif | |
905 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
906 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 907 | #endif |
a23afe53 | 908 | SCM_SETCDR (arg1, x); |
0f2d19dd JB |
909 | #ifdef SICP |
910 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
911 | #else | |
912 | return SCM_UNSPECIFIED; | |
913 | #endif | |
914 | } | |
915 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
916 | } | |
6dbd0af5 | 917 | |
0f2d19dd JB |
918 | /* end of acros */ |
919 | ||
b8229a3b MS |
920 | SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec); |
921 | SCM_SYMBOL(scm_i_letrec, s_letrec); | |
1cc91f1b | 922 | |
0f2d19dd JB |
923 | SCM |
924 | scm_m_letrec (xorig, env) | |
925 | SCM xorig; | |
926 | SCM env; | |
0f2d19dd JB |
927 | { |
928 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
929 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
930 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
931 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
932 | ||
6cb702da | 933 | ASRTSYNTAX (scm_ilength (x) >= 2, scm_s_body); |
0f2d19dd | 934 | proc = SCM_CAR (x); |
ff467021 JB |
935 | if (SCM_NULLP(proc)) |
936 | return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
6cb702da | 937 | ASRTSYNTAX (scm_ilength (proc) >= 1, scm_s_bindings); |
0f2d19dd JB |
938 | do |
939 | { | |
940 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
941 | arg1 = SCM_CAR (proc); | |
6cb702da MD |
942 | ASRTSYNTAX (2 == scm_ilength (arg1), scm_s_bindings); |
943 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), scm_s_variable); | |
0f2d19dd JB |
944 | vars = scm_cons (SCM_CAR (arg1), vars); |
945 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 946 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd | 947 | } |
ff467021 | 948 | while (SCM_NIMP (proc = SCM_CDR (proc))); |
0f2d19dd | 949 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); |
a23afe53 | 950 | bodycheck (xorig, SCM_CDRLOC (SCM_CDR (cdrx)), what); |
0f2d19dd JB |
951 | return scm_cons (SCM_IM_LETREC, cdrx); |
952 | } | |
953 | ||
1cc91f1b | 954 | |
b8229a3b | 955 | SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let); |
e4755e5c | 956 | SCM_GLOBAL_SYMBOL(scm_i_let, s_let); |
b8229a3b | 957 | |
0f2d19dd JB |
958 | SCM |
959 | scm_m_let (xorig, env) | |
960 | SCM xorig; | |
961 | SCM env; | |
0f2d19dd JB |
962 | { |
963 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
964 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
965 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
966 | ||
b8229a3b | 967 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd JB |
968 | proc = SCM_CAR (x); |
969 | if (SCM_NULLP (proc) | |
970 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
971 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
972 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
b8229a3b | 973 | SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let); |
0f2d19dd JB |
974 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ |
975 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
976 | if (!SCM_SYMBOLP (proc)) | |
b8229a3b | 977 | scm_wta (xorig, scm_s_bindings, s_let); /* bad let */ |
0f2d19dd JB |
978 | name = proc; /* named let, build equiv letrec */ |
979 | x = SCM_CDR (x); | |
b8229a3b | 980 | SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let); |
0f2d19dd | 981 | proc = SCM_CAR (x); /* bindings scm_list */ |
b8229a3b | 982 | SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let); |
ff467021 | 983 | while (SCM_NIMP (proc)) |
0f2d19dd JB |
984 | { /* vars and inits both in order */ |
985 | arg1 = SCM_CAR (proc); | |
b8229a3b | 986 | SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let); |
6cb702da | 987 | SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), |
b8229a3b | 988 | xorig, scm_s_variable, s_let); |
0f2d19dd | 989 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); |
a23afe53 | 990 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 991 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 992 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
993 | proc = SCM_CDR (proc); |
994 | } | |
995 | return | |
996 | scm_m_letrec (scm_cons2 (scm_i_let, | |
997 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
998 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
999 | env); | |
1000 | } | |
1001 | ||
1002 | ||
b8229a3b MS |
1003 | SCM_SYNTAX(s_atapply,"@apply", scm_makmmacro, scm_m_apply); |
1004 | SCM_SYMBOL(scm_i_atapply, s_atapply); | |
1cc91f1b | 1005 | |
0f2d19dd JB |
1006 | SCM |
1007 | scm_m_apply (xorig, env) | |
1008 | SCM xorig; | |
1009 | SCM env; | |
0f2d19dd | 1010 | { |
6cb702da | 1011 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, |
b8229a3b | 1012 | xorig, scm_s_expression, s_atapply); |
0f2d19dd JB |
1013 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); |
1014 | } | |
1015 | ||
b8229a3b MS |
1016 | |
1017 | SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont); | |
1018 | SCM_SYMBOL(scm_i_atcall_cc,s_atcall_cc); | |
0f2d19dd | 1019 | |
1cc91f1b | 1020 | |
0f2d19dd JB |
1021 | SCM |
1022 | scm_m_cont (xorig, env) | |
1023 | SCM xorig; | |
1024 | SCM env; | |
0f2d19dd | 1025 | { |
6cb702da | 1026 | SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, |
b8229a3b | 1027 | xorig, scm_s_expression, s_atcall_cc); |
0f2d19dd JB |
1028 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); |
1029 | } | |
1030 | ||
6dbd0af5 MD |
1031 | /* scm_unmemocopy takes a memoized expression together with its |
1032 | * environment and rewrites it to its original form. Thus, it is the | |
1033 | * inversion of the rewrite rules above. The procedure is not | |
1034 | * optimized for speed. It's used in scm_iprin1 when printing the | |
220ff1eb MD |
1035 | * code of a closure, in scm_procedure_source, in display_frame when |
1036 | * generating the source for a stackframe in a backtrace, and in | |
1037 | * display_expression. | |
6dbd0af5 MD |
1038 | */ |
1039 | ||
1cc91f1b JB |
1040 | static SCM unmemocopy SCM_P ((SCM x, SCM env)); |
1041 | ||
6dbd0af5 MD |
1042 | static SCM |
1043 | unmemocopy (x, env) | |
1044 | SCM x; | |
1045 | SCM env; | |
6dbd0af5 MD |
1046 | { |
1047 | SCM ls, z; | |
1048 | #ifdef DEBUG_EXTENSIONS | |
1049 | SCM p; | |
1050 | #endif | |
1051 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1052 | return x; | |
1053 | #ifdef DEBUG_EXTENSIONS | |
1054 | p = scm_whash_lookup (scm_source_whash, x); | |
1055 | #endif | |
1056 | switch (SCM_TYP7 (x)) | |
1057 | { | |
1058 | case (127 & SCM_IM_AND): | |
1059 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
1060 | break; | |
1061 | case (127 & SCM_IM_BEGIN): | |
1062 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
1063 | break; | |
1064 | case (127 & SCM_IM_CASE): | |
1065 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
1066 | break; | |
1067 | case (127 & SCM_IM_COND): | |
1068 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
1069 | break; | |
1070 | case (127 & SCM_IM_DO): | |
1071 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
1072 | goto transform; | |
1073 | case (127 & SCM_IM_IF): | |
1074 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
1075 | break; | |
1076 | case (127 & SCM_IM_LET): | |
1077 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
1078 | goto transform; | |
1079 | case (127 & SCM_IM_LETREC): | |
1080 | { | |
1081 | SCM f, v, e, s; | |
1082 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
1083 | transform: | |
1084 | x = SCM_CDR (x); | |
1085 | f = v = SCM_CAR (x); | |
1086 | x = SCM_CDR (x); | |
e2806c10 | 1087 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
1088 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
1089 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
1090 | env = z; | |
1091 | s = SCM_CAR (ls) == scm_i_do | |
1092 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
1093 | : f; | |
1094 | z = SCM_EOL; | |
1095 | do | |
1096 | { | |
1097 | z = scm_acons (SCM_CAR (v), | |
1098 | scm_cons (SCM_CAR (e), | |
1099 | SCM_CAR (s) == SCM_CAR (v) | |
1100 | ? SCM_EOL | |
1101 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1102 | z); | |
1103 | v = SCM_CDR (v); | |
1104 | e = SCM_CDR (e); | |
1105 | s = SCM_CDR (s); | |
1106 | } | |
ff467021 | 1107 | while (SCM_NIMP (v)); |
a23afe53 MD |
1108 | z = scm_cons (z, SCM_UNSPECIFIED); |
1109 | SCM_SETCDR (ls, z); | |
6dbd0af5 MD |
1110 | if (SCM_CAR (ls) == scm_i_do) |
1111 | { | |
1112 | x = SCM_CDR (x); | |
a23afe53 | 1113 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1114 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1115 | z = SCM_CDR (z); |
1116 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
6dbd0af5 MD |
1117 | } |
1118 | break; | |
1119 | } | |
1120 | case (127 & SCM_IM_LETSTAR): | |
1121 | { | |
1122 | SCM b, y; | |
1123 | x = SCM_CDR (x); | |
1124 | b = SCM_CAR (x); | |
1125 | y = SCM_EOL; | |
1126 | if SCM_IMP (b) | |
1127 | { | |
e2806c10 | 1128 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1129 | goto letstar; |
1130 | } | |
1131 | y = z = scm_acons (SCM_CAR (b), | |
1132 | unmemocar ( | |
1133 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1134 | SCM_UNSPECIFIED); | |
e2806c10 | 1135 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1136 | b = SCM_CDR (SCM_CDR (b)); |
1137 | if (SCM_IMP (b)) | |
1138 | { | |
1139 | SCM_SETCDR (y, SCM_EOL); | |
1140 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1141 | break; | |
1142 | } | |
1143 | do | |
1144 | { | |
a23afe53 MD |
1145 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1146 | unmemocar ( | |
6dbd0af5 | 1147 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1148 | SCM_UNSPECIFIED)); |
1149 | z = SCM_CDR (z); | |
e2806c10 | 1150 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1151 | b = SCM_CDR (SCM_CDR (b)); |
1152 | } | |
ff467021 | 1153 | while (SCM_NIMP (b)); |
a23afe53 | 1154 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 MD |
1155 | letstar: |
1156 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1157 | break; | |
1158 | } | |
1159 | case (127 & SCM_IM_OR): | |
1160 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1161 | break; | |
1162 | case (127 & SCM_IM_LAMBDA): | |
1163 | x = SCM_CDR (x); | |
1164 | ls = scm_cons (scm_i_lambda, | |
1165 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1166 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1167 | break; |
1168 | case (127 & SCM_IM_QUOTE): | |
1169 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1170 | break; | |
89efbff4 MD |
1171 | case (127 & SCM_IM_SET_X): |
1172 | ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED); | |
6dbd0af5 MD |
1173 | break; |
1174 | case (127 & SCM_IM_DEFINE): | |
1175 | { | |
1176 | SCM n; | |
1177 | x = SCM_CDR (x); | |
1178 | ls = scm_cons (scm_i_define, | |
1179 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1180 | if (SCM_NNULLP (env)) | |
a23afe53 | 1181 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1182 | break; |
1183 | } | |
1184 | case (127 & SCM_MAKISYM (0)): | |
1185 | z = SCM_CAR (x); | |
1186 | if (!SCM_ISYMP (z)) | |
1187 | goto unmemo; | |
ff467021 | 1188 | switch (SCM_ISYMNUM (z)) |
6dbd0af5 MD |
1189 | { |
1190 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1191 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1192 | goto loop; | |
1193 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1194 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1195 | goto loop; | |
1196 | default: | |
fa888178 | 1197 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1198 | } |
1199 | unmemo: | |
1200 | default: | |
1201 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1202 | SCM_UNSPECIFIED), | |
1203 | env); | |
1204 | } | |
1205 | loop: | |
1206 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 MD |
1207 | { |
1208 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1209 | SCM_UNSPECIFIED), | |
1210 | env)); | |
1211 | z = SCM_CDR (z); | |
1212 | } | |
1213 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1214 | #ifdef DEBUG_EXTENSIONS |
1215 | if (SCM_NFALSEP (p)) | |
1216 | scm_whash_insert (scm_source_whash, ls, p); | |
1217 | #endif | |
1218 | return ls; | |
1219 | } | |
1220 | ||
1cc91f1b | 1221 | |
6dbd0af5 MD |
1222 | SCM |
1223 | scm_unmemocopy (x, env) | |
1224 | SCM x; | |
1225 | SCM env; | |
6dbd0af5 MD |
1226 | { |
1227 | if (SCM_NNULLP (env)) | |
1228 | /* Make a copy of the lowest frame to protect it from | |
1229 | modifications by SCM_IM_DEFINE */ | |
1230 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1231 | else | |
1232 | return unmemocopy (x, env); | |
1233 | } | |
1234 | ||
cf7c17e9 | 1235 | #ifndef SCM_RECKLESS |
1cc91f1b | 1236 | |
0f2d19dd JB |
1237 | int |
1238 | scm_badargsp (formals, args) | |
1239 | SCM formals; | |
1240 | SCM args; | |
0f2d19dd | 1241 | { |
ff467021 | 1242 | while (SCM_NIMP (formals)) |
0f2d19dd | 1243 | { |
ff467021 JB |
1244 | if (SCM_NCONSP (formals)) |
1245 | return 0; | |
1246 | if (SCM_IMP(args)) | |
1247 | return 1; | |
0f2d19dd JB |
1248 | formals = SCM_CDR (formals); |
1249 | args = SCM_CDR (args); | |
1250 | } | |
1251 | return SCM_NNULLP (args) ? 1 : 0; | |
1252 | } | |
1253 | #endif | |
1254 | ||
1255 | ||
1256 | \f | |
6dbd0af5 | 1257 | SCM |
680ed4a8 | 1258 | scm_eval_args (l, env, proc) |
6dbd0af5 MD |
1259 | SCM l; |
1260 | SCM env; | |
680ed4a8 | 1261 | SCM proc; |
6dbd0af5 | 1262 | { |
680ed4a8 | 1263 | SCM results = SCM_EOL, *lloc = &results, res; |
6dbd0af5 MD |
1264 | while (SCM_NIMP (l)) |
1265 | { | |
cf7c17e9 | 1266 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1267 | if (SCM_IMP (l)) |
1268 | goto wrongnumargs; | |
1269 | else if (SCM_CONSP (l)) | |
1270 | { | |
1271 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1272 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1273 | else |
1274 | res = EVALCELLCAR (l, env); | |
1275 | } | |
1276 | else if (SCM_TYP3 (l) == 1) | |
1277 | { | |
1278 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1279 | res = SCM_CAR (l); /* struct planted in code */ | |
1280 | } | |
1281 | else | |
1282 | goto wrongnumargs; | |
1283 | #else | |
1284 | res = EVALCAR (l, env); | |
1285 | #endif | |
1286 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1287 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1288 | l = SCM_CDR (l); |
1289 | } | |
cf7c17e9 | 1290 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1291 | if (SCM_NNULLP (l)) |
1292 | { | |
1293 | wrongnumargs: | |
1294 | scm_wrong_num_args (proc); | |
1295 | } | |
1296 | #endif | |
1297 | return results; | |
6dbd0af5 | 1298 | } |
c4ac4d88 JB |
1299 | |
1300 | ||
0f2d19dd JB |
1301 | #endif /* !DEVAL */ |
1302 | ||
6dbd0af5 MD |
1303 | |
1304 | /* SECTION: This code is specific for the debugging support. One | |
1305 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1306 | * defined. | |
1307 | */ | |
1308 | ||
1309 | #ifndef DEVAL | |
1310 | ||
1311 | #define SCM_APPLY scm_apply | |
1312 | #define PREP_APPLY(proc, args) | |
1313 | #define ENTER_APPLY | |
1314 | #define RETURN(x) return x; | |
b7ff98dd MD |
1315 | #ifdef STACK_CHECKING |
1316 | #ifndef NO_CEVAL_STACK_CHECKING | |
1317 | #define EVAL_STACK_CHECKING | |
1318 | #endif | |
6dbd0af5 MD |
1319 | #endif |
1320 | ||
1321 | #else /* !DEVAL */ | |
1322 | ||
0f2d19dd JB |
1323 | #undef SCM_CEVAL |
1324 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1325 | #undef SCM_APPLY | |
1326 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1327 | #undef PREP_APPLY |
1328 | #define PREP_APPLY(p, l) \ | |
1329 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1330 | #undef ENTER_APPLY | |
1331 | #define ENTER_APPLY \ | |
1332 | {\ | |
b7ff98dd | 1333 | SCM_SET_ARGSREADY (debug);\ |
b6d75948 | 1334 | if (CHECK_APPLY && SCM_TRAPS_P)\ |
b7ff98dd | 1335 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1336 | {\ |
b7ff98dd | 1337 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
c6a4fbce | 1338 | SCM_SET_TRACED_FRAME (debug); \ |
b7ff98dd | 1339 | if (SCM_CHEAPTRAPS_P)\ |
6dbd0af5 | 1340 | {\ |
c0ab1b8d | 1341 | tmp = scm_make_debugobj (&debug);\ |
6dbd0af5 | 1342 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
b6d75948 | 1343 | }\ |
6dbd0af5 MD |
1344 | else\ |
1345 | {\ | |
1346 | scm_make_cont (&tmp);\ | |
ca6ef71a | 1347 | if (!setjmp (SCM_JMPBUF (tmp)))\ |
6dbd0af5 MD |
1348 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
1349 | }\ | |
1350 | }\ | |
1351 | } | |
0f2d19dd JB |
1352 | #undef RETURN |
1353 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1354 | #ifdef STACK_CHECKING |
1355 | #ifndef EVAL_STACK_CHECKING | |
1356 | #define EVAL_STACK_CHECKING | |
1357 | #endif | |
6dbd0af5 MD |
1358 | #endif |
1359 | ||
1360 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1361 | * *fixme*: Although efficiency is important here, this state variable | |
1362 | * should probably not be a global. It should be related to the | |
1363 | * current repl. | |
1364 | */ | |
1365 | ||
1cc91f1b JB |
1366 | |
1367 | SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env)); | |
0f2d19dd | 1368 | |
1646d37b | 1369 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1370 | * information stack frame. It is accessed very often from the |
1371 | * debugging evaluator, so it should probably not be indirectly | |
1372 | * addressed. Better to save and restore it from the current root at | |
1373 | * any stack swaps. | |
1374 | */ | |
1375 | ||
1646d37b MD |
1376 | #ifndef USE_THREADS |
1377 | scm_debug_frame *scm_last_debug_frame; | |
1378 | #endif | |
6dbd0af5 MD |
1379 | |
1380 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1381 | * stack frames at each real stack frame. | |
1382 | */ | |
1383 | ||
1384 | int scm_debug_eframe_size; | |
1385 | ||
b7ff98dd | 1386 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 | 1387 | |
a74145b8 MD |
1388 | int scm_eval_stack; |
1389 | ||
33b97402 | 1390 | scm_option scm_eval_opts[] = { |
a74145b8 | 1391 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." } |
33b97402 MD |
1392 | }; |
1393 | ||
6dbd0af5 | 1394 | scm_option scm_debug_opts[] = { |
b7ff98dd MD |
1395 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1396 | "*Flyweight representation of the stack at traps." }, | |
1397 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1398 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1399 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1400 | "Record procedure names at definition." }, | |
1401 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1402 | "Display backtrace in anti-chronological order." }, | |
4e646a03 MD |
1403 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1404 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1405 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1406 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1407 | "Maximal number of stored backtrace frames." }, | |
1408 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1409 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1410 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
a74145b8 | 1411 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (measured in words; 0 = no check)." } |
6dbd0af5 MD |
1412 | }; |
1413 | ||
1414 | scm_option scm_evaluator_trap_table[] = { | |
b6d75948 | 1415 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, |
b7ff98dd MD |
1416 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1417 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1418 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1419 | }; |
1420 | ||
33b97402 MD |
1421 | SCM_PROC (s_eval_options_interface, "eval-options-interface", 0, 1, 0, scm_eval_options_interface); |
1422 | ||
1423 | SCM | |
8ecf1f13 | 1424 | scm_eval_options_interface (SCM setting) |
33b97402 MD |
1425 | { |
1426 | SCM ans; | |
1427 | SCM_DEFER_INTS; | |
1428 | ans = scm_options (setting, | |
1429 | scm_eval_opts, | |
1430 | SCM_N_EVAL_OPTIONS, | |
1431 | s_eval_options_interface); | |
a74145b8 | 1432 | scm_eval_stack = SCM_EVAL_STACK * sizeof (void *); |
33b97402 MD |
1433 | SCM_ALLOW_INTS; |
1434 | return ans; | |
1435 | } | |
1436 | ||
1437 | SCM_PROC (s_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, scm_evaluator_traps); | |
1438 | ||
1439 | SCM | |
1440 | scm_evaluator_traps (setting) | |
1441 | SCM setting; | |
1442 | { | |
1443 | SCM ans; | |
1444 | SCM_DEFER_INTS; | |
1445 | ans = scm_options (setting, | |
1446 | scm_evaluator_trap_table, | |
1447 | SCM_N_EVALUATOR_TRAPS, | |
1448 | s_evaluator_traps); | |
1449 | SCM_RESET_DEBUG_MODE; | |
1450 | SCM_ALLOW_INTS | |
1451 | return ans; | |
1452 | } | |
1453 | ||
6dbd0af5 | 1454 | SCM |
680ed4a8 MD |
1455 | scm_deval_args (l, env, proc, lloc) |
1456 | SCM l, env, proc, *lloc; | |
0f2d19dd | 1457 | { |
680ed4a8 | 1458 | SCM *results = lloc, res; |
0f2d19dd JB |
1459 | while (SCM_NIMP (l)) |
1460 | { | |
cf7c17e9 | 1461 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1462 | if (SCM_IMP (l)) |
1463 | goto wrongnumargs; | |
1464 | else if (SCM_CONSP (l)) | |
1465 | { | |
1466 | if (SCM_IMP (SCM_CAR (l))) | |
6cb702da | 1467 | res = SCM_EVALIM (SCM_CAR (l), env); |
680ed4a8 MD |
1468 | else |
1469 | res = EVALCELLCAR (l, env); | |
1470 | } | |
1471 | else if (SCM_TYP3 (l) == 1) | |
1472 | { | |
1473 | if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0) | |
1474 | res = SCM_CAR (l); /* struct planted in code */ | |
1475 | } | |
1476 | else | |
1477 | goto wrongnumargs; | |
1478 | #else | |
1479 | res = EVALCAR (l, env); | |
1480 | #endif | |
1481 | *lloc = scm_cons (res, SCM_EOL); | |
a23afe53 | 1482 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1483 | l = SCM_CDR (l); |
1484 | } | |
cf7c17e9 | 1485 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
1486 | if (SCM_NNULLP (l)) |
1487 | { | |
1488 | wrongnumargs: | |
1489 | scm_wrong_num_args (proc); | |
1490 | } | |
1491 | #endif | |
1492 | return *results; | |
0f2d19dd JB |
1493 | } |
1494 | ||
6dbd0af5 MD |
1495 | #endif /* !DEVAL */ |
1496 | ||
1497 | ||
1498 | /* SECTION: Some local definitions for the evaluator. | |
1499 | */ | |
1500 | ||
1501 | #ifndef DEVAL | |
1502 | #ifdef SCM_FLOATS | |
1503 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1504 | #else | |
1505 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1506 | #endif | |
1507 | #endif /* DEVAL */ | |
1508 | ||
399dedcc | 1509 | #define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */ |
6dbd0af5 MD |
1510 | |
1511 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1512 | * three heads. This code is compiled twice. | |
1513 | */ | |
1514 | ||
0f2d19dd | 1515 | #if 0 |
1cc91f1b | 1516 | |
0f2d19dd JB |
1517 | SCM |
1518 | scm_ceval (x, env) | |
1519 | SCM x; | |
1520 | SCM env; | |
0f2d19dd JB |
1521 | {} |
1522 | #endif | |
1523 | #if 0 | |
1cc91f1b | 1524 | |
0f2d19dd JB |
1525 | SCM |
1526 | scm_deval (x, env) | |
1527 | SCM x; | |
1528 | SCM env; | |
0f2d19dd JB |
1529 | {} |
1530 | #endif | |
1531 | ||
6dbd0af5 | 1532 | SCM |
0f2d19dd JB |
1533 | SCM_CEVAL (x, env) |
1534 | SCM x; | |
1535 | SCM env; | |
1536 | { | |
1537 | union | |
1538 | { | |
1539 | SCM *lloc; | |
1540 | SCM arg1; | |
f8769b1d | 1541 | } t; |
6dbd0af5 MD |
1542 | SCM proc, arg2; |
1543 | #ifdef DEVAL | |
c0ab1b8d JB |
1544 | scm_debug_frame debug; |
1545 | scm_debug_info *debug_info_end; | |
1646d37b | 1546 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1547 | debug.status = scm_debug_eframe_size; |
c0ab1b8d JB |
1548 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1549 | * sizeof (debug.vect[0])); | |
1550 | debug.info = debug.vect; | |
1551 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1552 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1553 | #endif |
b7ff98dd MD |
1554 | #ifdef EVAL_STACK_CHECKING |
1555 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1556 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1557 | { |
b7ff98dd | 1558 | #ifdef DEVAL |
6dbd0af5 MD |
1559 | debug.info->e.exp = x; |
1560 | debug.info->e.env = env; | |
b7ff98dd | 1561 | #endif |
6dbd0af5 MD |
1562 | scm_report_stack_overflow (); |
1563 | } | |
1564 | #endif | |
1565 | #ifdef DEVAL | |
1566 | goto start; | |
1567 | #endif | |
1568 | loopnoap: | |
1569 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1570 | loop: | |
1571 | #ifdef DEVAL | |
b7ff98dd MD |
1572 | SCM_CLEAR_ARGSREADY (debug); |
1573 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1574 | --debug.info; |
c0ab1b8d | 1575 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1576 | { |
b7ff98dd | 1577 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1578 | debug.info -= 2; |
1579 | } | |
1580 | start: | |
1581 | debug.info->e.exp = x; | |
1582 | debug.info->e.env = env; | |
b6d75948 | 1583 | if (CHECK_ENTRY && SCM_TRAPS_P) |
b7ff98dd | 1584 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1585 | { |
b7ff98dd MD |
1586 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1587 | SCM_SET_TAILREC (debug); | |
b7ff98dd | 1588 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 1589 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1590 | else |
1591 | { | |
1592 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1593 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
1594 | { |
1595 | x = SCM_THROW_VALUE (t.arg1); | |
1596 | if (SCM_IMP (x)) | |
1597 | { | |
1598 | RETURN (x); | |
1599 | } | |
1600 | else | |
1601 | /* This gives the possibility for the debugger to | |
1602 | modify the source expression before evaluation. */ | |
1603 | goto dispatch; | |
1604 | } | |
1605 | } | |
1606 | scm_ithrow (scm_i_enter_frame, | |
1607 | scm_cons2 (t.arg1, tail, | |
1608 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1609 | 0); | |
1610 | } | |
6dbd0af5 | 1611 | #endif |
e3173f93 | 1612 | #if defined (USE_THREADS) || defined (DEVAL) |
f8769b1d | 1613 | dispatch: |
e3173f93 | 1614 | #endif |
9cb5124f | 1615 | SCM_TICK; |
0f2d19dd JB |
1616 | switch (SCM_TYP7 (x)) |
1617 | { | |
1618 | case scm_tcs_symbols: | |
1619 | /* Only happens when called at top level. | |
1620 | */ | |
1621 | x = scm_cons (x, SCM_UNDEFINED); | |
1622 | goto retval; | |
1623 | ||
1624 | case (127 & SCM_IM_AND): | |
1625 | x = SCM_CDR (x); | |
1626 | t.arg1 = x; | |
1627 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1628 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1629 | { | |
1630 | RETURN (SCM_BOOL_F); | |
1631 | } | |
1632 | else | |
1633 | x = t.arg1; | |
6dbd0af5 | 1634 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1635 | goto carloop; |
1636 | ||
1637 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1638 | cdrxnoap: |
1639 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1640 | cdrxbegin: |
1641 | x = SCM_CDR (x); | |
1642 | ||
1643 | begin: | |
1644 | t.arg1 = x; | |
1645 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1646 | { | |
1647 | SIDEVAL (SCM_CAR (x), env); | |
1648 | x = t.arg1; | |
1649 | } | |
1650 | ||
1651 | carloop: /* scm_eval car of last form in list */ | |
1652 | if (SCM_NCELLP (SCM_CAR (x))) | |
1653 | { | |
1654 | x = SCM_CAR (x); | |
6cb702da | 1655 | RETURN (SCM_IMP (x) ? SCM_EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1656 | } |
1657 | ||
1658 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1659 | { | |
1660 | retval: | |
6dbd0af5 | 1661 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1662 | } |
1663 | ||
1664 | x = SCM_CAR (x); | |
1665 | goto loop; /* tail recurse */ | |
1666 | ||
1667 | ||
1668 | case (127 & SCM_IM_CASE): | |
1669 | x = SCM_CDR (x); | |
1670 | t.arg1 = EVALCAR (x, env); | |
1671 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1672 | { | |
1673 | proc = SCM_CAR (x); | |
1674 | if (scm_i_else == SCM_CAR (proc)) | |
1675 | { | |
1676 | x = SCM_CDR (proc); | |
6dbd0af5 | 1677 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1678 | goto begin; |
1679 | } | |
1680 | proc = SCM_CAR (proc); | |
1681 | while (SCM_NIMP (proc)) | |
1682 | { | |
1683 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1684 | { | |
1685 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1686 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1687 | goto begin; |
1688 | } | |
1689 | proc = SCM_CDR (proc); | |
1690 | } | |
1691 | } | |
6dbd0af5 | 1692 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1693 | |
1694 | ||
1695 | case (127 & SCM_IM_COND): | |
1696 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1697 | { | |
1698 | proc = SCM_CAR (x); | |
1699 | t.arg1 = EVALCAR (proc, env); | |
1700 | if (SCM_NFALSEP (t.arg1)) | |
1701 | { | |
1702 | x = SCM_CDR (proc); | |
6dbd0af5 | 1703 | if SCM_NULLP (x) |
0f2d19dd | 1704 | { |
6dbd0af5 | 1705 | RETURN (t.arg1) |
0f2d19dd JB |
1706 | } |
1707 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1708 | { |
1709 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1710 | goto begin; | |
1711 | } | |
0f2d19dd JB |
1712 | proc = SCM_CDR (x); |
1713 | proc = EVALCAR (proc, env); | |
1714 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1715 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1716 | ENTER_APPLY; | |
0f2d19dd JB |
1717 | goto evap1; |
1718 | } | |
1719 | } | |
6dbd0af5 | 1720 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1721 | |
1722 | ||
1723 | case (127 & SCM_IM_DO): | |
1724 | x = SCM_CDR (x); | |
1725 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1726 | t.arg1 = SCM_EOL; /* values */ | |
1727 | while (SCM_NIMP (proc)) | |
1728 | { | |
1729 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1730 | proc = SCM_CDR (proc); | |
1731 | } | |
e2806c10 | 1732 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1733 | x = SCM_CDR (SCM_CDR (x)); |
1734 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1735 | { | |
1736 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1737 | { | |
1738 | t.arg1 = SCM_CAR (proc); /* body */ | |
1739 | SIDEVAL (t.arg1, env); | |
1740 | } | |
1741 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1742 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1743 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1744 | } |
1745 | x = SCM_CDR (proc); | |
1746 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1747 | RETURN (SCM_UNSPECIFIED); |
1748 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1749 | goto begin; |
1750 | ||
1751 | ||
1752 | case (127 & SCM_IM_IF): | |
1753 | x = SCM_CDR (x); | |
1754 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1755 | x = SCM_CDR (x); | |
1756 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1757 | { | |
1758 | RETURN (SCM_UNSPECIFIED); | |
1759 | } | |
6dbd0af5 | 1760 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1761 | goto carloop; |
1762 | ||
1763 | ||
1764 | case (127 & SCM_IM_LET): | |
1765 | x = SCM_CDR (x); | |
1766 | proc = SCM_CAR (SCM_CDR (x)); | |
1767 | t.arg1 = SCM_EOL; | |
1768 | do | |
1769 | { | |
1770 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1771 | } | |
1772 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1773 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1774 | x = SCM_CDR (x); |
6dbd0af5 | 1775 | goto cdrxnoap; |
0f2d19dd JB |
1776 | |
1777 | ||
1778 | case (127 & SCM_IM_LETREC): | |
1779 | x = SCM_CDR (x); | |
e2806c10 | 1780 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1781 | x = SCM_CDR (x); |
1782 | proc = SCM_CAR (x); | |
1783 | t.arg1 = SCM_EOL; | |
1784 | do | |
1785 | { | |
1786 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1787 | } | |
1788 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 1789 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 1790 | goto cdrxnoap; |
0f2d19dd JB |
1791 | |
1792 | ||
1793 | case (127 & SCM_IM_LETSTAR): | |
1794 | x = SCM_CDR (x); | |
1795 | proc = SCM_CAR (x); | |
1796 | if (SCM_IMP (proc)) | |
1797 | { | |
e2806c10 | 1798 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1799 | goto cdrxnoap; |
0f2d19dd JB |
1800 | } |
1801 | do | |
1802 | { | |
1803 | t.arg1 = SCM_CAR (proc); | |
1804 | proc = SCM_CDR (proc); | |
e2806c10 | 1805 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1806 | } |
1807 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1808 | goto cdrxnoap; |
0f2d19dd JB |
1809 | |
1810 | case (127 & SCM_IM_OR): | |
1811 | x = SCM_CDR (x); | |
1812 | t.arg1 = x; | |
1813 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1814 | { | |
1815 | x = EVALCAR (x, env); | |
1816 | if (SCM_NFALSEP (x)) | |
1817 | { | |
1818 | RETURN (x); | |
1819 | } | |
1820 | x = t.arg1; | |
1821 | } | |
6dbd0af5 | 1822 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1823 | goto carloop; |
1824 | ||
1825 | ||
1826 | case (127 & SCM_IM_LAMBDA): | |
1827 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1828 | ||
1829 | ||
1830 | case (127 & SCM_IM_QUOTE): | |
1831 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1832 | ||
1833 | ||
89efbff4 | 1834 | case (127 & SCM_IM_SET_X): |
0f2d19dd JB |
1835 | x = SCM_CDR (x); |
1836 | proc = SCM_CAR (x); | |
6dbd0af5 | 1837 | switch (7 & (int) proc) |
0f2d19dd JB |
1838 | { |
1839 | case 0: | |
1840 | t.lloc = scm_lookupcar (x, env); | |
1841 | break; | |
1842 | case 1: | |
a23afe53 | 1843 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
1844 | break; |
1845 | #ifdef MEMOIZE_LOCALS | |
1846 | case 4: | |
1847 | t.lloc = scm_ilookup (proc, env); | |
1848 | break; | |
1849 | #endif | |
1850 | } | |
1851 | x = SCM_CDR (x); | |
1852 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1853 | #ifdef SICP |
1854 | RETURN (*t.lloc); | |
1855 | #else | |
1856 | RETURN (SCM_UNSPECIFIED); | |
1857 | #endif | |
1858 | ||
1859 | ||
1860 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1861 | x = SCM_CDR (x); | |
1862 | proc = SCM_CAR (x); | |
1863 | x = SCM_CDR (x); | |
1864 | x = evalcar (x, env); | |
6dbd0af5 | 1865 | #ifdef DEBUG_EXTENSIONS |
80ea260c MD |
1866 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x)) |
1867 | { | |
1868 | t.arg1 = x; | |
1869 | proc: | |
1870 | if (SCM_CLOSUREP (t.arg1) | |
1871 | /* Only the first definition determines the name. */ | |
1872 | && (scm_procedure_property (t.arg1, scm_i_inner_name) | |
1873 | == SCM_BOOL_F)) | |
1874 | scm_set_procedure_property_x (t.arg1, scm_i_inner_name, proc); | |
1875 | else if (SCM_TYP16 (t.arg1) == scm_tc16_macro | |
1876 | && SCM_CDR (t.arg1) != t.arg1) | |
1877 | { | |
1878 | t.arg1 = SCM_CDR (t.arg1); | |
1879 | goto proc; | |
1880 | } | |
1881 | } | |
6dbd0af5 | 1882 | #endif |
0f2d19dd JB |
1883 | env = SCM_CAR (env); |
1884 | SCM_DEFER_INTS; | |
a23afe53 MD |
1885 | SCM_SETCAR (env, scm_cons (proc, SCM_CAR (env))); |
1886 | SCM_SETCDR (env, scm_cons (x, SCM_CDR (env))); | |
0f2d19dd JB |
1887 | SCM_ALLOW_INTS; |
1888 | RETURN (SCM_UNSPECIFIED); | |
1889 | ||
1890 | ||
0f2d19dd JB |
1891 | /* new syntactic forms go here. */ |
1892 | case (127 & SCM_MAKISYM (0)): | |
1893 | proc = SCM_CAR (x); | |
1894 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1895 | switch SCM_ISYMNUM (proc) | |
1896 | { | |
1897 | #if 0 | |
1898 | case (SCM_ISYMNUM (IM_VREF)): | |
1899 | { | |
1900 | SCM var; | |
1901 | var = SCM_CAR (SCM_CDR (x)); | |
1902 | RETURN (SCM_CDR(var)); | |
1903 | } | |
1904 | case (SCM_ISYMNUM (IM_VSET)): | |
1905 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1906 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1907 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1908 | #endif |
1909 | ||
1910 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1911 | proc = SCM_CDR (x); | |
1912 | proc = EVALCAR (proc, env); | |
1913 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1914 | if (SCM_CLOSUREP (proc)) | |
1915 | { | |
1609038c | 1916 | SCM argl, tl; |
6dbd0af5 | 1917 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1918 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1919 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1920 | #ifdef DEVAL |
1921 | debug.info->a.args = t.arg1; | |
1922 | #endif | |
cf7c17e9 | 1923 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
1924 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) |
1925 | goto wrongnumargs; | |
1926 | #endif | |
c79450dd | 1927 | ENTER_APPLY; |
1609038c MD |
1928 | /* Copy argument list */ |
1929 | if (SCM_IMP (t.arg1)) | |
1930 | argl = t.arg1; | |
1931 | else | |
1932 | { | |
1933 | argl = tl = scm_cons (SCM_CAR (t.arg1), SCM_UNSPECIFIED); | |
1934 | while (SCM_NIMP (t.arg1 = SCM_CDR (t.arg1)) | |
1935 | && SCM_CONSP (t.arg1)) | |
1936 | { | |
1937 | SCM_SETCDR (tl, scm_cons (SCM_CAR (t.arg1), | |
1938 | SCM_UNSPECIFIED)); | |
1939 | tl = SCM_CDR (tl); | |
1940 | } | |
1941 | SCM_SETCDR (tl, t.arg1); | |
1942 | } | |
1943 | ||
1944 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), argl, SCM_ENV (proc)); | |
0f2d19dd JB |
1945 | x = SCM_CODE (proc); |
1946 | goto cdrxbegin; | |
1947 | } | |
1948 | proc = scm_i_apply; | |
1949 | goto evapply; | |
1950 | ||
1951 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1952 | scm_make_cont (&t.arg1); | |
ca6ef71a | 1953 | if (setjmp (SCM_JMPBUF (t.arg1))) |
0f2d19dd JB |
1954 | { |
1955 | SCM val; | |
1956 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1957 | RETURN (val); |
0f2d19dd JB |
1958 | } |
1959 | proc = SCM_CDR (x); | |
1960 | proc = evalcar (proc, env); | |
1961 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1962 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1963 | ENTER_APPLY; | |
0f2d19dd JB |
1964 | goto evap1; |
1965 | ||
89efbff4 MD |
1966 | case (SCM_ISYMNUM (SCM_IM_DISPATCH)): |
1967 | { | |
1968 | int i, end, mask; | |
1969 | mask = -1; | |
1970 | proc = SCM_CDR (x); | |
1971 | i = 0; | |
1972 | end = SCM_LENGTH (proc); | |
1973 | find_method: | |
1974 | do | |
1975 | { | |
1976 | t.arg1 = SCM_CDDAR (env); | |
1977 | arg2 = SCM_VELTS (proc)[i]; | |
1978 | do | |
1979 | { | |
1980 | if (scm_class_of (SCM_CAR (t.arg1)) != SCM_CAR (arg2)) | |
1981 | goto next_method; | |
1982 | t.arg1 = SCM_CDR (t.arg1); | |
1983 | arg2 = SCM_CDR (arg2); | |
1984 | } | |
1985 | while (SCM_NIMP (t.arg1)); | |
1986 | x = SCM_CAR (arg2); | |
1987 | env = scm_cons (SCM_CAR (env), SCM_CDR (arg2)); | |
1988 | goto begin; | |
1989 | next_method: | |
1990 | i = (i + 1) & mask; | |
1991 | } while (i != end); | |
1992 | scm_memoize_method (x, SCM_CDAR (env)); | |
1993 | goto loop; | |
1994 | ||
1995 | case (SCM_ISYMNUM (SCM_IM_HASH_DISPATCH)): | |
1996 | { | |
1997 | int hashset = SCM_INUM (SCM_CADR (x)); | |
1998 | mask = SCM_INUM (SCM_CADDR (x)); | |
1999 | proc = SCM_CDDDR (x); | |
2000 | i = 0; | |
2001 | t.arg1 = SCM_CDDAR (env); | |
2002 | do | |
2003 | { | |
2004 | i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1)))[scm_si_hashsets + hashset]; | |
2005 | t.arg1 = SCM_CDR (t.arg1); | |
2006 | } | |
2007 | while (SCM_NIMP (t.arg1)); | |
2008 | i &= mask; | |
2009 | end = i; | |
2010 | } | |
2011 | goto find_method; | |
2012 | } | |
2013 | ||
0f2d19dd JB |
2014 | default: |
2015 | goto badfun; | |
2016 | } | |
2017 | ||
2018 | default: | |
2019 | proc = x; | |
2020 | badfun: | |
f5bf2977 | 2021 | /* scm_everr (x, env,...) */ |
523f5266 GH |
2022 | scm_misc_error (NULL, |
2023 | "Wrong type to apply: %S", | |
2024 | scm_listify (proc, SCM_UNDEFINED)); | |
0f2d19dd JB |
2025 | case scm_tc7_vector: |
2026 | case scm_tc7_wvect: | |
2027 | case scm_tc7_bvect: | |
2028 | case scm_tc7_byvect: | |
2029 | case scm_tc7_svect: | |
2030 | case scm_tc7_ivect: | |
2031 | case scm_tc7_uvect: | |
2032 | case scm_tc7_fvect: | |
2033 | case scm_tc7_dvect: | |
2034 | case scm_tc7_cvect: | |
2035 | #ifdef LONGLONGS | |
2036 | case scm_tc7_llvect: | |
2037 | #endif | |
2038 | case scm_tc7_string: | |
0f2d19dd | 2039 | case scm_tc7_substring: |
0f2d19dd JB |
2040 | case scm_tc7_smob: |
2041 | case scm_tcs_closures: | |
224822be MD |
2042 | #ifdef CCLO |
2043 | case scm_tc7_cclo: | |
2044 | #endif | |
89efbff4 | 2045 | case scm_tc7_pws: |
0f2d19dd JB |
2046 | case scm_tcs_subrs: |
2047 | RETURN (x); | |
2048 | ||
2049 | #ifdef MEMOIZE_LOCALS | |
2050 | case (127 & SCM_ILOC00): | |
2051 | proc = *scm_ilookup (SCM_CAR (x), env); | |
2052 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2053 | #ifndef SCM_RECKLESS |
2054 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2055 | goto checkargs; |
2056 | #endif | |
2057 | #endif | |
2058 | break; | |
2059 | #endif /* ifdef MEMOIZE_LOCALS */ | |
2060 | ||
2061 | ||
2062 | case scm_tcs_cons_gloc: | |
2063 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
aa00bd1e MD |
2064 | if (proc == 0) |
2065 | /* This is a struct implanted in the code, not a gloc. */ | |
2066 | RETURN (x); | |
0f2d19dd | 2067 | SCM_ASRTGO (SCM_NIMP (proc), badfun); |
cf7c17e9 JB |
2068 | #ifndef SCM_RECKLESS |
2069 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2070 | goto checkargs; |
2071 | #endif | |
2072 | #endif | |
2073 | break; | |
2074 | ||
2075 | ||
2076 | case scm_tcs_cons_nimcar: | |
2077 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
2078 | { | |
f8769b1d MV |
2079 | #ifdef USE_THREADS |
2080 | t.lloc = scm_lookupcar1 (x, env); | |
2081 | if (t.lloc == NULL) | |
2082 | { | |
2083 | /* we have lost the race, start again. */ | |
2084 | goto dispatch; | |
2085 | } | |
2086 | proc = *t.lloc; | |
2087 | #else | |
0f2d19dd | 2088 | proc = *scm_lookupcar (x, env); |
f8769b1d MV |
2089 | #endif |
2090 | ||
0f2d19dd JB |
2091 | if (SCM_IMP (proc)) |
2092 | { | |
2093 | unmemocar (x, env); | |
2094 | goto badfun; | |
2095 | } | |
2096 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2097 | { | |
2098 | unmemocar (x, env); | |
2099 | ||
2100 | handle_a_macro: | |
368bf056 | 2101 | #ifdef DEVAL |
7c354052 MD |
2102 | /* Set a flag during macro expansion so that macro |
2103 | application frames can be deleted from the backtrace. */ | |
2104 | SCM_SET_MACROEXP (debug); | |
368bf056 | 2105 | #endif |
f8769b1d MV |
2106 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, |
2107 | scm_cons (env, scm_listofnull)); | |
2108 | ||
7c354052 MD |
2109 | #ifdef DEVAL |
2110 | SCM_CLEAR_MACROEXP (debug); | |
2111 | #endif | |
0f2d19dd JB |
2112 | switch ((int) (SCM_CAR (proc) >> 16)) |
2113 | { | |
2114 | case 2: | |
2115 | if (scm_ilength (t.arg1) <= 0) | |
2116 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
2117 | #ifdef DEVAL |
2118 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
2119 | { | |
f8769b1d | 2120 | |
6dbd0af5 MD |
2121 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ |
2122 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
2123 | /* Prevent memoizing result of define macro */ | |
2124 | { | |
2125 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2126 | scm_set_source_properties_x (debug.info->e.exp, | |
2127 | scm_source_properties (x)); | |
2128 | } | |
2129 | #endif | |
2130 | SCM_DEFER_INTS; | |
a23afe53 MD |
2131 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2132 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
2133 | SCM_ALLOW_INTS; |
2134 | goto dispatch; | |
2135 | } | |
2136 | /* Prevent memoizing of debug info expression. */ | |
2137 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
2138 | scm_set_source_properties_x (debug.info->e.exp, | |
2139 | scm_source_properties (x)); | |
2140 | #endif | |
0f2d19dd | 2141 | SCM_DEFER_INTS; |
a23afe53 MD |
2142 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
2143 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 2144 | SCM_ALLOW_INTS; |
6dbd0af5 | 2145 | goto loopnoap; |
0f2d19dd JB |
2146 | case 1: |
2147 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 2148 | goto loopnoap; |
0f2d19dd JB |
2149 | case 0: |
2150 | RETURN (t.arg1); | |
2151 | } | |
2152 | } | |
2153 | } | |
2154 | else | |
2155 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
2156 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
cf7c17e9 JB |
2157 | #ifndef SCM_RECKLESS |
2158 | #ifdef SCM_CAUTIOUS | |
0f2d19dd JB |
2159 | checkargs: |
2160 | #endif | |
2161 | if (SCM_CLOSUREP (proc)) | |
2162 | { | |
2163 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
2164 | t.arg1 = SCM_CDR (x); | |
2165 | while (SCM_NIMP (arg2)) | |
2166 | { | |
2167 | if (SCM_NCONSP (arg2)) | |
2168 | goto evapply; | |
2169 | if (SCM_IMP (t.arg1)) | |
2170 | goto umwrongnumargs; | |
2171 | arg2 = SCM_CDR (arg2); | |
2172 | t.arg1 = SCM_CDR (t.arg1); | |
2173 | } | |
2174 | if (SCM_NNULLP (t.arg1)) | |
2175 | goto umwrongnumargs; | |
2176 | } | |
2177 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
2178 | goto handle_a_macro; | |
2179 | #endif | |
2180 | } | |
2181 | ||
2182 | ||
6dbd0af5 MD |
2183 | evapply: |
2184 | PREP_APPLY (proc, SCM_EOL); | |
2185 | if (SCM_NULLP (SCM_CDR (x))) { | |
2186 | ENTER_APPLY; | |
89efbff4 | 2187 | evap0: |
0f2d19dd JB |
2188 | switch (SCM_TYP7 (proc)) |
2189 | { /* no arguments given */ | |
2190 | case scm_tc7_subr_0: | |
2191 | RETURN (SCM_SUBRF (proc) ()); | |
2192 | case scm_tc7_subr_1o: | |
2193 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2194 | case scm_tc7_lsubr: | |
2195 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2196 | case scm_tc7_rpsubr: | |
2197 | RETURN (SCM_BOOL_T); | |
2198 | case scm_tc7_asubr: | |
2199 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2200 | #ifdef CCLO |
0f2d19dd JB |
2201 | case scm_tc7_cclo: |
2202 | t.arg1 = proc; | |
2203 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2204 | #ifdef DEVAL |
2205 | debug.info->a.proc = proc; | |
2206 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2207 | #endif | |
0f2d19dd | 2208 | goto evap1; |
6dbd0af5 | 2209 | #endif |
89efbff4 MD |
2210 | case scm_tc7_pws: |
2211 | proc = SCM_PROCEDURE (proc); | |
2212 | #ifdef DEVAL | |
2213 | debug.info->a.proc = proc; | |
2214 | #endif | |
2215 | goto evap0; | |
0f2d19dd JB |
2216 | case scm_tcs_closures: |
2217 | x = SCM_CODE (proc); | |
e2806c10 | 2218 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd | 2219 | goto cdrxbegin; |
da7f71d7 | 2220 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2221 | if (!SCM_I_OPERATORP (proc)) |
2222 | goto badfun; | |
2223 | else | |
da7f71d7 MD |
2224 | { |
2225 | x = (SCM_I_ENTITYP (proc) | |
2226 | ? SCM_ENTITY_PROC_0 (proc) | |
2227 | : SCM_OPERATOR_PROC_0 (proc)); | |
2228 | if (SCM_NIMP (x)) | |
33b97402 MD |
2229 | { |
2230 | if (SCM_TYP7 (x) == scm_tc7_subr_1) | |
2231 | RETURN (SCM_SUBRF (x) (proc)) | |
2232 | else if (SCM_CLOSUREP (x)) | |
2233 | { | |
2234 | t.arg1 = proc; | |
2235 | proc = x; | |
da7f71d7 | 2236 | #ifdef DEVAL |
33b97402 MD |
2237 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); |
2238 | debug.info->a.proc = proc; | |
da7f71d7 | 2239 | #endif |
33b97402 MD |
2240 | goto clos1; |
2241 | } | |
2242 | } | |
da7f71d7 MD |
2243 | /* Fall through. */ |
2244 | } | |
0f2d19dd JB |
2245 | case scm_tc7_contin: |
2246 | case scm_tc7_subr_1: | |
2247 | case scm_tc7_subr_2: | |
2248 | case scm_tc7_subr_2o: | |
2249 | case scm_tc7_cxr: | |
2250 | case scm_tc7_subr_3: | |
2251 | case scm_tc7_lsubr_2: | |
2252 | umwrongnumargs: | |
2253 | unmemocar (x, env); | |
2254 | wrongnumargs: | |
f5bf2977 GH |
2255 | /* scm_everr (x, env,...) */ |
2256 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2257 | default: |
2258 | /* handle macros here */ | |
2259 | goto badfun; | |
2260 | } | |
6dbd0af5 | 2261 | } |
0f2d19dd JB |
2262 | |
2263 | /* must handle macros by here */ | |
2264 | x = SCM_CDR (x); | |
cf7c17e9 | 2265 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2266 | if (SCM_IMP (x)) |
2267 | goto wrongnumargs; | |
680ed4a8 MD |
2268 | else if (SCM_CONSP (x)) |
2269 | { | |
2270 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2271 | t.arg1 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2272 | else |
2273 | t.arg1 = EVALCELLCAR (x, env); | |
2274 | } | |
2275 | else if (SCM_TYP3 (x) == 1) | |
2276 | { | |
2277 | if ((t.arg1 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2278 | t.arg1 = SCM_CAR (x); /* struct planted in code */ | |
2279 | } | |
2280 | else | |
2281 | goto wrongnumargs; | |
2282 | #else | |
0f2d19dd | 2283 | t.arg1 = EVALCAR (x, env); |
680ed4a8 | 2284 | #endif |
6dbd0af5 MD |
2285 | #ifdef DEVAL |
2286 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2287 | #endif | |
0f2d19dd JB |
2288 | x = SCM_CDR (x); |
2289 | if (SCM_NULLP (x)) | |
2290 | { | |
6dbd0af5 | 2291 | ENTER_APPLY; |
0f2d19dd JB |
2292 | evap1: |
2293 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2294 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2295 | case scm_tc7_subr_2o: |
2296 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2297 | case scm_tc7_subr_1: | |
2298 | case scm_tc7_subr_1o: | |
2299 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2300 | case scm_tc7_cxr: | |
2301 | #ifdef SCM_FLOATS | |
2302 | if (SCM_SUBRF (proc)) | |
2303 | { | |
2304 | if (SCM_INUMP (t.arg1)) | |
2305 | { | |
2306 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2307 | 0.0)); | |
2308 | } | |
2309 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2310 | if (SCM_REALP (t.arg1)) | |
2311 | { | |
2312 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2313 | } | |
2314 | #ifdef SCM_BIGDIG | |
2315 | if (SCM_BIGP (t.arg1)) | |
2316 | { | |
2317 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2318 | } | |
2319 | #endif | |
2320 | floerr: | |
2321 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2322 | } | |
2323 | #endif | |
2324 | proc = (SCM) SCM_SNAME (proc); | |
2325 | { | |
2326 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2327 | while ('c' != *--chrs) | |
2328 | { | |
2329 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
2330 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2331 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2332 | } | |
2333 | RETURN (t.arg1); | |
2334 | } | |
2335 | case scm_tc7_rpsubr: | |
2336 | RETURN (SCM_BOOL_T); | |
2337 | case scm_tc7_asubr: | |
2338 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2339 | case scm_tc7_lsubr: | |
2340 | #ifdef DEVAL | |
6dbd0af5 | 2341 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2342 | #else |
2343 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2344 | #endif | |
6dbd0af5 | 2345 | #ifdef CCLO |
0f2d19dd JB |
2346 | case scm_tc7_cclo: |
2347 | arg2 = t.arg1; | |
2348 | t.arg1 = proc; | |
2349 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2350 | #ifdef DEVAL |
2351 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2352 | debug.info->a.proc = proc; | |
2353 | #endif | |
0f2d19dd | 2354 | goto evap2; |
6dbd0af5 | 2355 | #endif |
89efbff4 MD |
2356 | case scm_tc7_pws: |
2357 | proc = SCM_PROCEDURE (proc); | |
2358 | #ifdef DEVAL | |
2359 | debug.info->a.proc = proc; | |
2360 | #endif | |
2361 | goto evap1; | |
0f2d19dd | 2362 | case scm_tcs_closures: |
da7f71d7 | 2363 | clos1: |
0f2d19dd JB |
2364 | x = SCM_CODE (proc); |
2365 | #ifdef DEVAL | |
e2806c10 | 2366 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2367 | #else |
e2806c10 | 2368 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2369 | #endif |
2370 | goto cdrxbegin; | |
65e41721 MD |
2371 | case scm_tc7_contin: |
2372 | scm_call_continuation (proc, t.arg1); | |
0c32d76c | 2373 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2374 | if (!SCM_I_OPERATORP (proc)) |
2375 | goto badfun; | |
2376 | else | |
0c32d76c | 2377 | { |
da7f71d7 MD |
2378 | x = (SCM_I_ENTITYP (proc) |
2379 | ? SCM_ENTITY_PROC_1 (proc) | |
2380 | : SCM_OPERATOR_PROC_1 (proc)); | |
2381 | if (SCM_NIMP (x)) | |
33b97402 MD |
2382 | { |
2383 | if (SCM_TYP7 (x) == scm_tc7_subr_2) | |
2384 | RETURN (SCM_SUBRF (x) (proc, t.arg1)) | |
2385 | else if (SCM_CLOSUREP (x)) | |
2386 | { | |
2387 | arg2 = t.arg1; | |
2388 | t.arg1 = proc; | |
2389 | proc = x; | |
0c32d76c | 2390 | #ifdef DEVAL |
33b97402 MD |
2391 | debug.info->a.args = scm_cons (t.arg1, |
2392 | debug.info->a.args); | |
2393 | debug.info->a.proc = proc; | |
0c32d76c | 2394 | #endif |
33b97402 MD |
2395 | goto clos2; |
2396 | } | |
2397 | } | |
0c32d76c MD |
2398 | /* Fall through. */ |
2399 | } | |
0f2d19dd JB |
2400 | case scm_tc7_subr_2: |
2401 | case scm_tc7_subr_0: | |
2402 | case scm_tc7_subr_3: | |
2403 | case scm_tc7_lsubr_2: | |
2404 | goto wrongnumargs; | |
2405 | default: | |
2406 | goto badfun; | |
2407 | } | |
2408 | } | |
cf7c17e9 | 2409 | #ifdef SCM_CAUTIOUS |
0f2d19dd JB |
2410 | if (SCM_IMP (x)) |
2411 | goto wrongnumargs; | |
680ed4a8 MD |
2412 | else if (SCM_CONSP (x)) |
2413 | { | |
2414 | if (SCM_IMP (SCM_CAR (x))) | |
6cb702da | 2415 | arg2 = SCM_EVALIM (SCM_CAR (x), env); |
680ed4a8 MD |
2416 | else |
2417 | arg2 = EVALCELLCAR (x, env); | |
2418 | } | |
2419 | else if (SCM_TYP3 (x) == 1) | |
2420 | { | |
2421 | if ((arg2 = SCM_GLOC_VAL (SCM_CAR (x))) == 0) | |
2422 | arg2 = SCM_CAR (x); /* struct planted in code */ | |
2423 | } | |
2424 | else | |
2425 | goto wrongnumargs; | |
2426 | #else | |
2427 | arg2 = EVALCAR (x, env); | |
0f2d19dd JB |
2428 | #endif |
2429 | { /* have two or more arguments */ | |
6dbd0af5 MD |
2430 | #ifdef DEVAL |
2431 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2432 | #endif | |
0f2d19dd JB |
2433 | x = SCM_CDR (x); |
2434 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2435 | ENTER_APPLY; |
0f2d19dd JB |
2436 | #ifdef CCLO |
2437 | evap2: | |
2438 | #endif | |
6dbd0af5 MD |
2439 | switch (SCM_TYP7 (proc)) |
2440 | { /* have two arguments */ | |
2441 | case scm_tc7_subr_2: | |
2442 | case scm_tc7_subr_2o: | |
2443 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2444 | case scm_tc7_lsubr: | |
0f2d19dd | 2445 | #ifdef DEVAL |
6dbd0af5 MD |
2446 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2447 | #else | |
2448 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2449 | #endif |
6dbd0af5 MD |
2450 | case scm_tc7_lsubr_2: |
2451 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2452 | case scm_tc7_rpsubr: | |
2453 | case scm_tc7_asubr: | |
2454 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2455 | #ifdef CCLO | |
2456 | cclon: | |
2457 | case scm_tc7_cclo: | |
0f2d19dd | 2458 | #ifdef DEVAL |
6dbd0af5 MD |
2459 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2460 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2461 | #else |
6dbd0af5 MD |
2462 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2463 | scm_cons2 (t.arg1, arg2, | |
680ed4a8 | 2464 | scm_cons (scm_eval_args (x, env, proc), |
da7f71d7 | 2465 | SCM_EOL)))); |
0f2d19dd | 2466 | #endif |
6dbd0af5 MD |
2467 | /* case scm_tc7_cclo: |
2468 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2469 | arg2 = t.arg1; | |
2470 | t.arg1 = proc; | |
2471 | proc = SCM_CCLO_SUBR(proc); | |
2472 | goto evap3; */ | |
2473 | #endif | |
89efbff4 MD |
2474 | case scm_tc7_pws: |
2475 | proc = SCM_PROCEDURE (proc); | |
2476 | #ifdef DEVAL | |
2477 | debug.info->a.proc = proc; | |
2478 | #endif | |
2479 | goto evap2; | |
0c32d76c | 2480 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2481 | if (!SCM_I_OPERATORP (proc)) |
2482 | goto badfun; | |
2483 | else | |
0c32d76c | 2484 | { |
da7f71d7 MD |
2485 | x = (SCM_I_ENTITYP (proc) |
2486 | ? SCM_ENTITY_PROC_2 (proc) | |
2487 | : SCM_OPERATOR_PROC_2 (proc)); | |
2488 | if (SCM_NIMP (x)) | |
33b97402 MD |
2489 | { |
2490 | if (SCM_TYP7 (x) == scm_tc7_subr_3) | |
2491 | RETURN (SCM_SUBRF (x) (proc, t.arg1, arg2)) | |
2492 | else if (SCM_CLOSUREP (x)) | |
2493 | { | |
0c32d76c | 2494 | #ifdef DEVAL |
33b97402 MD |
2495 | SCM_SET_ARGSREADY (debug); |
2496 | debug.info->a.args = scm_cons (proc, | |
2497 | debug.info->a.args); | |
2498 | debug.info->a.proc = x; | |
2499 | #endif | |
2500 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (x)), | |
2501 | scm_cons2 (proc, t.arg1, | |
65e41721 | 2502 | scm_cons (arg2, SCM_EOL)), |
33b97402 MD |
2503 | SCM_ENV (x)); |
2504 | x = SCM_CODE (x); | |
2505 | goto cdrxbegin; | |
2506 | } | |
2507 | } | |
0c32d76c MD |
2508 | /* Fall through. */ |
2509 | } | |
6dbd0af5 MD |
2510 | case scm_tc7_subr_0: |
2511 | case scm_tc7_cxr: | |
2512 | case scm_tc7_subr_1o: | |
2513 | case scm_tc7_subr_1: | |
2514 | case scm_tc7_subr_3: | |
2515 | case scm_tc7_contin: | |
2516 | goto wrongnumargs; | |
2517 | default: | |
2518 | goto badfun; | |
2519 | case scm_tcs_closures: | |
0c32d76c | 2520 | clos2: |
0f2d19dd | 2521 | #ifdef DEVAL |
da7f71d7 MD |
2522 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2523 | debug.info->a.args, | |
2524 | SCM_ENV (proc)); | |
0f2d19dd | 2525 | #else |
da7f71d7 MD |
2526 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
2527 | scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); | |
0f2d19dd | 2528 | #endif |
6dbd0af5 MD |
2529 | x = SCM_CODE (proc); |
2530 | goto cdrxbegin; | |
2531 | } | |
0f2d19dd | 2532 | } |
cf7c17e9 | 2533 | #ifdef SCM_CAUTIOUS |
680ed4a8 MD |
2534 | if (SCM_IMP (x) || SCM_NECONSP (x)) |
2535 | goto wrongnumargs; | |
2536 | #endif | |
0f2d19dd | 2537 | #ifdef DEVAL |
6dbd0af5 | 2538 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
680ed4a8 MD |
2539 | scm_deval_args (x, env, proc, |
2540 | SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2541 | #endif |
6dbd0af5 | 2542 | ENTER_APPLY; |
89efbff4 | 2543 | evap3: |
6dbd0af5 MD |
2544 | switch (SCM_TYP7 (proc)) |
2545 | { /* have 3 or more arguments */ | |
0f2d19dd | 2546 | #ifdef DEVAL |
6dbd0af5 MD |
2547 | case scm_tc7_subr_3: |
2548 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
da7f71d7 MD |
2549 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2550 | SCM_CADDR (debug.info->a.args))); | |
6dbd0af5 | 2551 | case scm_tc7_asubr: |
399dedcc MD |
2552 | #ifdef BUILTIN_RPASUBR |
2553 | t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2554 | arg2 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2555 | do |
2556 | { | |
2557 | t.arg1 = SCM_SUBRF(proc)(t.arg1, SCM_CAR (arg2)); | |
2558 | arg2 = SCM_CDR (arg2); | |
2559 | } | |
2560 | while (SCM_NIMP (arg2)); | |
399dedcc MD |
2561 | RETURN (t.arg1) |
2562 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2563 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2564 | #ifdef BUILTIN_RPASUBR |
2565 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2566 | RETURN (SCM_BOOL_F) | |
2567 | t.arg1 = SCM_CDR (SCM_CDR (debug.info->a.args)); | |
da7f71d7 MD |
2568 | do |
2569 | { | |
2570 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, SCM_CAR (t.arg1)))) | |
2571 | RETURN (SCM_BOOL_F) | |
2572 | arg2 = SCM_CAR (t.arg1); | |
2573 | t.arg1 = SCM_CDR (t.arg1); | |
2574 | } | |
2575 | while (SCM_NIMP (t.arg1)); | |
71d3aa6d MD |
2576 | RETURN (SCM_BOOL_T) |
2577 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 MD |
2578 | RETURN (SCM_APPLY (proc, t.arg1, |
2579 | scm_acons (arg2, | |
2580 | SCM_CDR (SCM_CDR (debug.info->a.args)), | |
2581 | SCM_EOL))) | |
71d3aa6d | 2582 | #endif /* BUILTIN_RPASUBR */ |
399dedcc | 2583 | case scm_tc7_lsubr_2: |
da7f71d7 MD |
2584 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, |
2585 | SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
399dedcc MD |
2586 | case scm_tc7_lsubr: |
2587 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2588 | #ifdef CCLO |
6dbd0af5 MD |
2589 | case scm_tc7_cclo: |
2590 | goto cclon; | |
0f2d19dd | 2591 | #endif |
89efbff4 MD |
2592 | case scm_tc7_pws: |
2593 | proc = SCM_PROCEDURE (proc); | |
2594 | debug.info->a.proc = proc; | |
2595 | goto evap3; | |
6dbd0af5 | 2596 | case scm_tcs_closures: |
b7ff98dd | 2597 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2598 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2599 | debug.info->a.args, |
2600 | SCM_ENV (proc)); | |
2601 | x = SCM_CODE (proc); | |
2602 | goto cdrxbegin; | |
2603 | #else /* DEVAL */ | |
2604 | case scm_tc7_subr_3: | |
2605 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2606 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2607 | case scm_tc7_asubr: | |
399dedcc | 2608 | #ifdef BUILTIN_RPASUBR |
da7f71d7 MD |
2609 | t.arg1 = SCM_SUBRF (proc) (t.arg1, arg2); |
2610 | do | |
2611 | { | |
2612 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2613 | x = SCM_CDR(x); | |
2614 | } | |
2615 | while (SCM_NIMP (x)); | |
399dedcc MD |
2616 | RETURN (t.arg1) |
2617 | #endif /* BUILTIN_RPASUBR */ | |
6dbd0af5 | 2618 | case scm_tc7_rpsubr: |
71d3aa6d MD |
2619 | #ifdef BUILTIN_RPASUBR |
2620 | if (SCM_FALSEP (SCM_SUBRF (proc) (t.arg1, arg2))) | |
2621 | RETURN (SCM_BOOL_F) | |
da7f71d7 MD |
2622 | do |
2623 | { | |
2624 | t.arg1 = EVALCAR (x, env); | |
2625 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg2, t.arg1))) | |
2626 | RETURN (SCM_BOOL_F) | |
2627 | arg2 = t.arg1; | |
2628 | x = SCM_CDR (x); | |
2629 | } | |
2630 | while (SCM_NIMP (x)); | |
71d3aa6d MD |
2631 | RETURN (SCM_BOOL_T) |
2632 | #else /* BUILTIN_RPASUBR */ | |
da7f71d7 | 2633 | RETURN (SCM_APPLY (proc, t.arg1, |
680ed4a8 MD |
2634 | scm_acons (arg2, |
2635 | scm_eval_args (x, env, proc), | |
2636 | SCM_EOL))); | |
71d3aa6d | 2637 | #endif /* BUILTIN_RPASUBR */ |
6dbd0af5 | 2638 | case scm_tc7_lsubr_2: |
680ed4a8 | 2639 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env, proc))); |
6dbd0af5 | 2640 | case scm_tc7_lsubr: |
680ed4a8 MD |
2641 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, |
2642 | arg2, | |
2643 | scm_eval_args (x, env, proc)))); | |
0f2d19dd | 2644 | #ifdef CCLO |
6dbd0af5 MD |
2645 | case scm_tc7_cclo: |
2646 | goto cclon; | |
0f2d19dd | 2647 | #endif |
89efbff4 MD |
2648 | case scm_tc7_pws: |
2649 | proc = SCM_PROCEDURE (proc); | |
2650 | goto evap3; | |
6dbd0af5 MD |
2651 | case scm_tcs_closures: |
2652 | #ifdef DEVAL | |
b7ff98dd | 2653 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2654 | #endif |
e2806c10 | 2655 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
680ed4a8 MD |
2656 | scm_cons2 (t.arg1, |
2657 | arg2, | |
2658 | scm_eval_args (x, env, proc)), | |
6dbd0af5 MD |
2659 | SCM_ENV (proc)); |
2660 | x = SCM_CODE (proc); | |
2661 | goto cdrxbegin; | |
0f2d19dd | 2662 | #endif /* DEVAL */ |
0c32d76c | 2663 | case scm_tcs_cons_gloc: |
9b07e212 MD |
2664 | if (!SCM_I_OPERATORP (proc)) |
2665 | goto badfun; | |
2666 | else | |
da7f71d7 MD |
2667 | { |
2668 | SCM p = (SCM_I_ENTITYP (proc) | |
2669 | ? SCM_ENTITY_PROC_3 (proc) | |
2670 | : SCM_OPERATOR_PROC_3 (proc)); | |
2671 | if (SCM_NIMP (p)) | |
33b97402 MD |
2672 | { |
2673 | if (SCM_TYP7 (p) == scm_tc7_lsubr_2) | |
da7f71d7 | 2674 | #ifdef DEVAL |
33b97402 MD |
2675 | RETURN (SCM_SUBRF (p) (proc, t.arg1, |
2676 | scm_cons (arg2, SCM_CDDR (debug.info->a.args)))) | |
da7f71d7 | 2677 | #else |
33b97402 MD |
2678 | RETURN (SCM_SUBRF (p) (proc, t.arg1, |
2679 | scm_cons (arg2, | |
680ed4a8 | 2680 | scm_eval_args (x, env, proc)))) |
da7f71d7 | 2681 | #endif |
33b97402 MD |
2682 | else if (SCM_CLOSUREP (p)) |
2683 | { | |
da7f71d7 | 2684 | #ifdef DEVAL |
33b97402 MD |
2685 | SCM_SET_ARGSREADY (debug); |
2686 | debug.info->a.args = scm_cons (proc, debug.info->a.args); | |
2687 | debug.info->a.proc = p; | |
2688 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)), | |
2689 | scm_cons2 (proc, t.arg1, | |
2690 | scm_cons (arg2, | |
2691 | SCM_CDDDR (debug.info->a.args))), | |
2692 | SCM_ENV (p)); | |
da7f71d7 | 2693 | #else |
33b97402 MD |
2694 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)), |
2695 | scm_cons2 (proc, t.arg1, | |
2696 | scm_cons (arg2, | |
680ed4a8 | 2697 | scm_eval_args (x, env, proc))), |
33b97402 MD |
2698 | SCM_ENV (p)); |
2699 | #endif | |
2700 | x = SCM_CODE (p); | |
2701 | goto cdrxbegin; | |
2702 | } | |
2703 | } | |
da7f71d7 MD |
2704 | /* Fall through. */ |
2705 | } | |
6dbd0af5 MD |
2706 | case scm_tc7_subr_2: |
2707 | case scm_tc7_subr_1o: | |
2708 | case scm_tc7_subr_2o: | |
2709 | case scm_tc7_subr_0: | |
2710 | case scm_tc7_cxr: | |
2711 | case scm_tc7_subr_1: | |
2712 | case scm_tc7_contin: | |
2713 | goto wrongnumargs; | |
2714 | default: | |
2715 | goto badfun; | |
2716 | } | |
0f2d19dd JB |
2717 | } |
2718 | #ifdef DEVAL | |
6dbd0af5 | 2719 | exit: |
b6d75948 | 2720 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 2721 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2722 | { |
b7ff98dd MD |
2723 | SCM_CLEAR_TRACED_FRAME (debug); |
2724 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2725 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2726 | else |
2727 | { | |
2728 | scm_make_cont (&t.arg1); | |
ca6ef71a | 2729 | if (setjmp (SCM_JMPBUF (t.arg1))) |
6dbd0af5 MD |
2730 | { |
2731 | proc = SCM_THROW_VALUE (t.arg1); | |
2732 | goto ret; | |
2733 | } | |
2734 | } | |
2735 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2736 | } | |
2737 | ret: | |
1646d37b | 2738 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2739 | return proc; |
2740 | #endif | |
2741 | } | |
2742 | ||
6dbd0af5 MD |
2743 | |
2744 | /* SECTION: This code is compiled once. | |
2745 | */ | |
2746 | ||
0f2d19dd JB |
2747 | #ifndef DEVAL |
2748 | ||
82a2622a | 2749 | /* This code processes the arguments to apply: |
b145c172 JB |
2750 | |
2751 | (apply PROC ARG1 ... ARGS) | |
2752 | ||
82a2622a JB |
2753 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
2754 | ... arguments onto the front of ARGS, and returns the resulting | |
2755 | list. Note that ARGS is a list; thus, the argument to this | |
2756 | function is a list whose last element is a list. | |
2757 | ||
2758 | Apply calls this function, and applies PROC to the elements of the | |
b145c172 JB |
2759 | result. apply:nconc2last takes care of building the list of |
2760 | arguments, given (ARG1 ... ARGS). | |
2761 | ||
82a2622a JB |
2762 | Rather than do new consing, apply:nconc2last destroys its argument. |
2763 | On that topic, this code came into my care with the following | |
2764 | beautifully cryptic comment on that topic: "This will only screw | |
2765 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
2766 | they're referring to, send me a patch to this comment. */ | |
b145c172 | 2767 | |
0f2d19dd | 2768 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); |
1cc91f1b | 2769 | |
0f2d19dd JB |
2770 | SCM |
2771 | scm_nconc2last (lst) | |
2772 | SCM lst; | |
0f2d19dd JB |
2773 | { |
2774 | SCM *lloc; | |
b145c172 | 2775 | SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2776 | lloc = &lst; |
2777 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 2778 | lloc = SCM_CDRLOC (*lloc); |
b145c172 | 2779 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2780 | *lloc = SCM_CAR (*lloc); |
2781 | return lst; | |
2782 | } | |
2783 | ||
2784 | #endif /* !DEVAL */ | |
2785 | ||
6dbd0af5 MD |
2786 | |
2787 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2788 | * It is compiled twice. | |
2789 | */ | |
2790 | ||
0f2d19dd | 2791 | #if 0 |
1cc91f1b | 2792 | |
0f2d19dd JB |
2793 | SCM |
2794 | scm_apply (proc, arg1, args) | |
2795 | SCM proc; | |
2796 | SCM arg1; | |
2797 | SCM args; | |
0f2d19dd JB |
2798 | {} |
2799 | #endif | |
2800 | ||
2801 | #if 0 | |
1cc91f1b | 2802 | |
0f2d19dd JB |
2803 | SCM |
2804 | scm_dapply (proc, arg1, args) | |
2805 | SCM proc; | |
2806 | SCM arg1; | |
2807 | SCM args; | |
0f2d19dd JB |
2808 | {} |
2809 | #endif | |
2810 | ||
1cc91f1b | 2811 | |
82a2622a JB |
2812 | /* Apply a function to a list of arguments. |
2813 | ||
2814 | This function is exported to the Scheme level as taking two | |
2815 | required arguments and a tail argument, as if it were: | |
2816 | (lambda (proc arg1 . args) ...) | |
2817 | Thus, if you just have a list of arguments to pass to a procedure, | |
2818 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
2819 | args, pass the first as ARG1, then cons any remaining fixed args | |
2820 | onto the front of your argument list, and pass that as ARGS. */ | |
2821 | ||
0f2d19dd JB |
2822 | SCM |
2823 | SCM_APPLY (proc, arg1, args) | |
2824 | SCM proc; | |
2825 | SCM arg1; | |
2826 | SCM args; | |
0f2d19dd JB |
2827 | { |
2828 | #ifdef DEBUG_EXTENSIONS | |
2829 | #ifdef DEVAL | |
6dbd0af5 | 2830 | scm_debug_frame debug; |
c0ab1b8d | 2831 | scm_debug_info debug_vect_body; |
1646d37b | 2832 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2833 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 2834 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
2835 | debug.vect[0].a.proc = proc; |
2836 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2837 | scm_last_debug_frame = &debug; |
0f2d19dd | 2838 | #else |
b7ff98dd | 2839 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2840 | return scm_dapply (proc, arg1, args); |
2841 | #endif | |
2842 | #endif | |
2843 | ||
2844 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
82a2622a JB |
2845 | |
2846 | /* If ARGS is the empty list, then we're calling apply with only two | |
2847 | arguments --- ARG1 is the list of arguments for PROC. Whatever | |
2848 | the case, futz with things so that ARG1 is the first argument to | |
2849 | give to PROC (or SCM_UNDEFINED if no args), and ARGS contains the | |
30000774 JB |
2850 | rest. |
2851 | ||
2852 | Setting the debug apply frame args this way is pretty messy. | |
2853 | Perhaps we should store arg1 and args directly in the frame as | |
2854 | received, and let scm_frame_arguments unpack them, because that's | |
2855 | a relatively rare operation. This works for now; if the Guile | |
2856 | developer archives are still around, see Mikael's post of | |
2857 | 11-Apr-97. */ | |
0f2d19dd JB |
2858 | if (SCM_NULLP (args)) |
2859 | { | |
2860 | if (SCM_NULLP (arg1)) | |
30000774 JB |
2861 | { |
2862 | arg1 = SCM_UNDEFINED; | |
2863 | #ifdef DEVAL | |
2864 | debug.vect[0].a.args = SCM_EOL; | |
2865 | #endif | |
2866 | } | |
0f2d19dd JB |
2867 | else |
2868 | { | |
30000774 JB |
2869 | #ifdef DEVAL |
2870 | debug.vect[0].a.args = arg1; | |
2871 | #endif | |
0f2d19dd JB |
2872 | args = SCM_CDR (arg1); |
2873 | arg1 = SCM_CAR (arg1); | |
2874 | } | |
2875 | } | |
2876 | else | |
2877 | { | |
82a2622a | 2878 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ |
0f2d19dd | 2879 | args = scm_nconc2last (args); |
30000774 JB |
2880 | #ifdef DEVAL |
2881 | debug.vect[0].a.args = scm_cons (arg1, args); | |
2882 | #endif | |
0f2d19dd | 2883 | } |
0f2d19dd | 2884 | #ifdef DEVAL |
b6d75948 | 2885 | if (SCM_ENTER_FRAME_P && SCM_TRAPS_P) |
6dbd0af5 MD |
2886 | { |
2887 | SCM tmp; | |
b7ff98dd | 2888 | if (SCM_CHEAPTRAPS_P) |
c0ab1b8d | 2889 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2890 | else |
2891 | { | |
2892 | scm_make_cont (&tmp); | |
ca6ef71a | 2893 | if (setjmp (SCM_JMPBUF (tmp))) |
6dbd0af5 MD |
2894 | goto entap; |
2895 | } | |
2896 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2897 | } | |
2898 | entap: | |
2899 | ENTER_APPLY; | |
2900 | #endif | |
2901 | #ifdef CCLO | |
2902 | tail: | |
0f2d19dd JB |
2903 | #endif |
2904 | switch (SCM_TYP7 (proc)) | |
2905 | { | |
2906 | case scm_tc7_subr_2o: | |
2907 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2908 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2909 | case scm_tc7_subr_2: | |
269861c7 MD |
2910 | SCM_ASRTGO (SCM_NNULLP (args) && SCM_NULLP (SCM_CDR (args)), |
2911 | wrongnumargs); | |
0f2d19dd JB |
2912 | args = SCM_CAR (args); |
2913 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2914 | case scm_tc7_subr_0: | |
2915 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2916 | RETURN (SCM_SUBRF (proc) ()) | |
2917 | case scm_tc7_subr_1: | |
2918 | case scm_tc7_subr_1o: | |
2919 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2920 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2921 | case scm_tc7_cxr: | |
2922 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2923 | #ifdef SCM_FLOATS | |
2924 | if (SCM_SUBRF (proc)) | |
2925 | { | |
6dbd0af5 MD |
2926 | if (SCM_INUMP (arg1)) |
2927 | { | |
2928 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2929 | } | |
0f2d19dd | 2930 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2931 | if (SCM_REALP (arg1)) |
2932 | { | |
2933 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2934 | } | |
0f2d19dd | 2935 | #ifdef SCM_BIGDIG |
ff467021 | 2936 | if (SCM_BIGP(arg1)) |
0f2d19dd JB |
2937 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) |
2938 | #endif | |
2939 | floerr: | |
2940 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2941 | } | |
2942 | #endif | |
2943 | proc = (SCM) SCM_SNAME (proc); | |
2944 | { | |
2945 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2946 | while ('c' != *--chrs) | |
2947 | { | |
2948 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2949 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2950 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2951 | } | |
2952 | RETURN (arg1) | |
2953 | } | |
2954 | case scm_tc7_subr_3: | |
2955 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2956 | case scm_tc7_lsubr: | |
2957 | #ifdef DEVAL | |
6dbd0af5 | 2958 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2959 | #else |
2960 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2961 | #endif | |
2962 | case scm_tc7_lsubr_2: | |
2963 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2964 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2965 | case scm_tc7_asubr: | |
2966 | if (SCM_NULLP (args)) | |
2967 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2968 | while (SCM_NIMP (args)) | |
2969 | { | |
2970 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2971 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2972 | args = SCM_CDR (args); | |
2973 | } | |
2974 | RETURN (arg1); | |
2975 | case scm_tc7_rpsubr: | |
2976 | if (SCM_NULLP (args)) | |
2977 | RETURN (SCM_BOOL_T); | |
2978 | while (SCM_NIMP (args)) | |
2979 | { | |
2980 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2981 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2982 | RETURN (SCM_BOOL_F); | |
2983 | arg1 = SCM_CAR (args); | |
2984 | args = SCM_CDR (args); | |
2985 | } | |
2986 | RETURN (SCM_BOOL_T); | |
2987 | case scm_tcs_closures: | |
2988 | #ifdef DEVAL | |
6dbd0af5 | 2989 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2990 | #else |
2991 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2992 | #endif | |
cf7c17e9 | 2993 | #ifndef SCM_RECKLESS |
0f2d19dd JB |
2994 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) |
2995 | goto wrongnumargs; | |
2996 | #endif | |
1609038c MD |
2997 | |
2998 | /* Copy argument list */ | |
2999 | if (SCM_IMP (arg1)) | |
3000 | args = arg1; | |
3001 | else | |
3002 | { | |
3003 | SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED); | |
3004 | while (SCM_NIMP (arg1 = SCM_CDR (arg1)) | |
3005 | && SCM_CONSP (arg1)) | |
3006 | { | |
3007 | SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1), | |
3008 | SCM_UNSPECIFIED)); | |
3009 | tl = SCM_CDR (tl); | |
3010 | } | |
3011 | SCM_SETCDR (tl, arg1); | |
3012 | } | |
3013 | ||
3014 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc)); | |
0f2d19dd JB |
3015 | proc = SCM_CODE (proc); |
3016 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
3017 | arg1 = EVALCAR (proc, args); | |
3018 | RETURN (arg1); | |
3019 | case scm_tc7_contin: | |
3020 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
3021 | scm_call_continuation (proc, arg1); | |
3022 | #ifdef CCLO | |
3023 | case scm_tc7_cclo: | |
3024 | #ifdef DEVAL | |
6dbd0af5 MD |
3025 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
3026 | arg1 = proc; | |
3027 | proc = SCM_CCLO_SUBR (proc); | |
3028 | debug.vect[0].a.proc = proc; | |
3029 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
3030 | #else |
3031 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
3032 | arg1 = proc; |
3033 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 3034 | #endif |
0f2d19dd JB |
3035 | goto tail; |
3036 | #endif | |
89efbff4 MD |
3037 | case scm_tc7_pws: |
3038 | proc = SCM_PROCEDURE (proc); | |
3039 | #ifdef DEVAL | |
3040 | debug.vect[0].a.proc = proc; | |
3041 | #endif | |
3042 | goto tail; | |
0c32d76c | 3043 | case scm_tcs_cons_gloc: |
9b07e212 MD |
3044 | if (!SCM_I_OPERATORP (proc)) |
3045 | goto badproc; | |
3046 | else | |
da7f71d7 MD |
3047 | { |
3048 | #ifdef DEVAL | |
3049 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); | |
3050 | #else | |
3051 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
3052 | #endif | |
3053 | arg1 = proc; | |
3054 | proc = (SCM_NULLP (args) | |
3055 | ? (SCM_I_ENTITYP (proc) | |
3056 | ? SCM_ENTITY_PROC_0 (proc) | |
3057 | : SCM_OPERATOR_PROC_0 (proc)) | |
3058 | : SCM_NULLP (SCM_CDR (args)) | |
3059 | ? (SCM_I_ENTITYP (proc) | |
3060 | ? SCM_ENTITY_PROC_1 (proc) | |
3061 | : SCM_OPERATOR_PROC_1 (proc)) | |
3062 | : SCM_NULLP (SCM_CDDR (args)) | |
3063 | ? (SCM_I_ENTITYP (proc) | |
3064 | ? SCM_ENTITY_PROC_2 (proc) | |
3065 | : SCM_OPERATOR_PROC_2 (proc)) | |
3066 | : (SCM_I_ENTITYP (proc) | |
3067 | ? SCM_ENTITY_PROC_3 (proc) | |
3068 | : SCM_OPERATOR_PROC_3 (proc))); | |
3069 | #ifdef DEVAL | |
3070 | debug.vect[0].a.proc = proc; | |
3071 | debug.vect[0].a.args = scm_cons (arg1, args); | |
3072 | #endif | |
3073 | goto tail; | |
3074 | } | |
0f2d19dd | 3075 | wrongnumargs: |
f5bf2977 | 3076 | scm_wrong_num_args (proc); |
0f2d19dd JB |
3077 | default: |
3078 | badproc: | |
3079 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
3080 | RETURN (arg1); | |
3081 | } | |
3082 | #ifdef DEVAL | |
6dbd0af5 | 3083 | exit: |
b6d75948 | 3084 | if (CHECK_EXIT && SCM_TRAPS_P) |
b7ff98dd | 3085 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 3086 | { |
b7ff98dd MD |
3087 | SCM_CLEAR_TRACED_FRAME (debug); |
3088 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 3089 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
3090 | else |
3091 | { | |
3092 | scm_make_cont (&arg1); | |
ca6ef71a | 3093 | if (setjmp (SCM_JMPBUF (arg1))) |
6dbd0af5 MD |
3094 | { |
3095 | proc = SCM_THROW_VALUE (arg1); | |
3096 | goto ret; | |
3097 | } | |
3098 | } | |
3099 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
3100 | } | |
3101 | ret: | |
1646d37b | 3102 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
3103 | return proc; |
3104 | #endif | |
3105 | } | |
3106 | ||
6dbd0af5 MD |
3107 | |
3108 | /* SECTION: The rest of this file is only read once. | |
3109 | */ | |
3110 | ||
0f2d19dd JB |
3111 | #ifndef DEVAL |
3112 | ||
d9c393f5 JB |
3113 | /* Typechecking for multi-argument MAP and FOR-EACH. |
3114 | ||
3115 | Verify that each element of the vector ARGS, except for the first, | |
3116 | is a proper list whose length is LEN. Attribute errors to WHO, | |
3117 | and claim that the i'th element of ARGS is WHO's i+2'th argument. */ | |
3118 | static inline void | |
3119 | check_map_args (long len, SCM args, const char *who) | |
3120 | { | |
3121 | SCM *ve = SCM_VELTS (args); | |
3122 | int i; | |
3123 | ||
3124 | for (i = SCM_LENGTH (args) - 1; i >= 1; i--) | |
3125 | { | |
3126 | int elt_len = scm_ilength (ve[i]); | |
3127 | ||
3128 | if (elt_len < 0) | |
3129 | scm_wrong_type_arg (who, i + 2, ve[i]); | |
3130 | ||
3131 | if (elt_len != len) | |
3132 | scm_out_of_range (who, ve[i]); | |
3133 | } | |
3134 | ||
3135 | scm_remember (&args); | |
3136 | } | |
3137 | ||
3138 | ||
6cb702da | 3139 | SCM_PROC (s_map, "map", 2, 0, 1, scm_map); |
1cc91f1b | 3140 | |
368bf056 MD |
3141 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
3142 | sequentially, starting with the first element(s). This is used in | |
3143 | evalext.c where the Scheme procedure `serial-map', which guarantees | |
3144 | sequential behaviour, is implemented using scm_map. If the | |
3145 | behaviour changes, we need to update `serial-map'. | |
3146 | */ | |
3147 | ||
0f2d19dd JB |
3148 | SCM |
3149 | scm_map (proc, arg1, args) | |
3150 | SCM proc; | |
3151 | SCM arg1; | |
3152 | SCM args; | |
0f2d19dd | 3153 | { |
d9c393f5 | 3154 | long i, len; |
0f2d19dd JB |
3155 | SCM res = SCM_EOL; |
3156 | SCM *pres = &res; | |
3157 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
3158 | ||
3159 | if (SCM_NULLP (arg1)) | |
3160 | return res; | |
d9c393f5 JB |
3161 | len = scm_ilength (arg1); |
3162 | SCM_ASSERT (len >= 0, arg1, SCM_ARG2, s_map); | |
0f2d19dd JB |
3163 | if (SCM_NULLP (args)) |
3164 | { | |
3165 | while (SCM_NIMP (arg1)) | |
3166 | { | |
3167 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
3168 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
a23afe53 | 3169 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3170 | arg1 = SCM_CDR (arg1); |
3171 | } | |
3172 | return res; | |
3173 | } | |
3174 | args = scm_vector (scm_cons (arg1, args)); | |
3175 | ve = SCM_VELTS (args); | |
cf7c17e9 | 3176 | #ifndef SCM_RECKLESS |
d9c393f5 | 3177 | check_map_args (len, args, s_map); |
0f2d19dd JB |
3178 | #endif |
3179 | while (1) | |
3180 | { | |
3181 | arg1 = SCM_EOL; | |
3182 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3183 | { | |
d9c393f5 JB |
3184 | if (SCM_IMP (ve[i])) |
3185 | return res; | |
0f2d19dd JB |
3186 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); |
3187 | ve[i] = SCM_CDR (ve[i]); | |
3188 | } | |
3189 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 3190 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
3191 | } |
3192 | } | |
3193 | ||
3194 | ||
3195 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
1cc91f1b | 3196 | |
0f2d19dd JB |
3197 | SCM |
3198 | scm_for_each (proc, arg1, args) | |
3199 | SCM proc; | |
3200 | SCM arg1; | |
3201 | SCM args; | |
0f2d19dd JB |
3202 | { |
3203 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
d9c393f5 | 3204 | long i, len; |
0f2d19dd JB |
3205 | if SCM_NULLP (arg1) |
3206 | return SCM_UNSPECIFIED; | |
d9c393f5 JB |
3207 | len = scm_ilength (arg1); |
3208 | SCM_ASSERT (len >= 0, arg1, SCM_ARG2, s_for_each); | |
0f2d19dd JB |
3209 | if SCM_NULLP (args) |
3210 | { | |
3211 | while SCM_NIMP (arg1) | |
3212 | { | |
3213 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
3214 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
3215 | arg1 = SCM_CDR (arg1); | |
3216 | } | |
3217 | return SCM_UNSPECIFIED; | |
3218 | } | |
3219 | args = scm_vector (scm_cons (arg1, args)); | |
3220 | ve = SCM_VELTS (args); | |
cf7c17e9 | 3221 | #ifndef SCM_RECKLESS |
d9c393f5 | 3222 | check_map_args (len, args, s_for_each); |
0f2d19dd JB |
3223 | #endif |
3224 | while (1) | |
3225 | { | |
3226 | arg1 = SCM_EOL; | |
3227 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
3228 | { | |
3229 | if SCM_IMP | |
3230 | (ve[i]) return SCM_UNSPECIFIED; | |
3231 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
3232 | ve[i] = SCM_CDR (ve[i]); | |
3233 | } | |
3234 | scm_apply (proc, arg1, SCM_EOL); | |
3235 | } | |
3236 | } | |
3237 | ||
3238 | ||
1cc91f1b | 3239 | |
0f2d19dd JB |
3240 | SCM |
3241 | scm_closure (code, env) | |
3242 | SCM code; | |
3243 | SCM env; | |
0f2d19dd JB |
3244 | { |
3245 | register SCM z; | |
3246 | SCM_NEWCELL (z); | |
3247 | SCM_SETCODE (z, code); | |
a23afe53 | 3248 | SCM_SETENV (z, env); |
0f2d19dd JB |
3249 | return z; |
3250 | } | |
3251 | ||
3252 | ||
3253 | long scm_tc16_promise; | |
1cc91f1b | 3254 | |
0f2d19dd JB |
3255 | SCM |
3256 | scm_makprom (code) | |
3257 | SCM code; | |
0f2d19dd | 3258 | { |
23a62151 | 3259 | SCM_RETURN_NEWSMOB (scm_tc16_promise, code); |
0f2d19dd JB |
3260 | } |
3261 | ||
3262 | ||
1cc91f1b JB |
3263 | |
3264 | static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
3265 | ||
0f2d19dd | 3266 | static int |
19402679 | 3267 | prinprom (exp, port, pstate) |
0f2d19dd JB |
3268 | SCM exp; |
3269 | SCM port; | |
19402679 | 3270 | scm_print_state *pstate; |
0f2d19dd | 3271 | { |
19402679 | 3272 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 3273 | scm_puts ("#<promise ", port); |
19402679 MD |
3274 | SCM_SET_WRITINGP (pstate, 1); |
3275 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
3276 | SCM_SET_WRITINGP (pstate, writingp); | |
b7f3516f | 3277 | scm_putc ('>', port); |
0f2d19dd JB |
3278 | return !0; |
3279 | } | |
3280 | ||
3281 | ||
0f2d19dd | 3282 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); |
1cc91f1b | 3283 | |
0f2d19dd JB |
3284 | SCM |
3285 | scm_force (x) | |
3286 | SCM x; | |
0f2d19dd | 3287 | { |
eed6e03e JB |
3288 | SCM_ASSERT (SCM_NIMP(x) && SCM_TYP16 (x) == scm_tc16_promise, |
3289 | x, SCM_ARG1, s_force); | |
0f2d19dd JB |
3290 | if (!((1L << 16) & SCM_CAR (x))) |
3291 | { | |
3292 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
3293 | if (!((1L << 16) & SCM_CAR (x))) | |
3294 | { | |
3295 | SCM_DEFER_INTS; | |
a23afe53 MD |
3296 | SCM_SETCDR (x, ans); |
3297 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
3298 | SCM_ALLOW_INTS; |
3299 | } | |
3300 | } | |
3301 | return SCM_CDR (x); | |
3302 | } | |
3303 | ||
3304 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
1cc91f1b | 3305 | |
0f2d19dd JB |
3306 | SCM |
3307 | scm_promise_p (x) | |
3308 | SCM x; | |
0f2d19dd JB |
3309 | { |
3310 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
3311 | ? SCM_BOOL_T | |
3312 | : SCM_BOOL_F); | |
3313 | } | |
3314 | ||
3315 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
1cc91f1b | 3316 | |
0f2d19dd JB |
3317 | SCM |
3318 | scm_copy_tree (obj) | |
3319 | SCM obj; | |
0f2d19dd JB |
3320 | { |
3321 | SCM ans, tl; | |
ff467021 JB |
3322 | if (SCM_IMP(obj)) |
3323 | return obj; | |
3910272e MD |
3324 | if (SCM_VECTORP (obj)) |
3325 | { | |
3326 | scm_sizet i = SCM_LENGTH (obj); | |
3327 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED); | |
3328 | while (i--) | |
3329 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
3330 | return ans; | |
3331 | } | |
ff467021 | 3332 | if (SCM_NCONSP (obj)) |
0f2d19dd JB |
3333 | return obj; |
3334 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
3335 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
067affe3 MD |
3336 | { |
3337 | /* Copy source properties possibly associated with head pair. */ | |
3338 | SCM p = scm_whash_lookup (scm_source_whash, obj); | |
3339 | if (SCM_NIMP (p)) | |
3340 | scm_whash_insert (scm_source_whash, ans, p); | |
3341 | } | |
0f2d19dd | 3342 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) |
a23afe53 MD |
3343 | { |
3344 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
3345 | SCM_UNSPECIFIED)); | |
3346 | tl = SCM_CDR (tl); | |
3347 | } | |
3348 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
3349 | return ans; |
3350 | } | |
3351 | ||
1cc91f1b | 3352 | |
0f2d19dd JB |
3353 | SCM |
3354 | scm_eval_3 (obj, copyp, env) | |
3355 | SCM obj; | |
3356 | int copyp; | |
3357 | SCM env; | |
0f2d19dd JB |
3358 | { |
3359 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
3360 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
3361 | else if (copyp) | |
3362 | obj = scm_copy_tree (obj); | |
6cb702da | 3363 | return SCM_XEVAL (obj, env); |
0f2d19dd JB |
3364 | } |
3365 | ||
0f2d19dd | 3366 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); |
1cc91f1b | 3367 | |
0f2d19dd JB |
3368 | SCM |
3369 | scm_eval2 (obj, env_thunk) | |
3370 | SCM obj; | |
3371 | SCM env_thunk; | |
0f2d19dd | 3372 | { |
6bcb0868 | 3373 | return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk)); |
0f2d19dd JB |
3374 | } |
3375 | ||
3376 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
1cc91f1b | 3377 | |
0f2d19dd JB |
3378 | SCM |
3379 | scm_eval (obj) | |
3380 | SCM obj; | |
0f2d19dd | 3381 | { |
6bcb0868 MD |
3382 | return scm_eval_3 (obj, |
3383 | 1, | |
3384 | scm_top_level_env | |
3385 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3386 | } |
3387 | ||
11f77bfc | 3388 | /* SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); */ |
1cc91f1b | 3389 | |
0f2d19dd JB |
3390 | SCM |
3391 | scm_eval_x (obj) | |
3392 | SCM obj; | |
0f2d19dd | 3393 | { |
6bcb0868 MD |
3394 | return scm_eval_3 (obj, |
3395 | 0, | |
3396 | scm_top_level_env | |
3397 | (SCM_CDR (scm_top_level_lookup_closure_var))); | |
0f2d19dd JB |
3398 | } |
3399 | ||
3eeba8d4 | 3400 | static const scm_smobfuns promsmob = {scm_markcdr, scm_free0, prinprom}; |
0f2d19dd | 3401 | |
6dbd0af5 MD |
3402 | |
3403 | /* At this point, scm_deval and scm_dapply are generated. | |
3404 | */ | |
3405 | ||
0f2d19dd | 3406 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3407 | # define DEVAL |
3408 | # include "eval.c" | |
0f2d19dd JB |
3409 | #endif |
3410 | ||
3411 | ||
1cc91f1b | 3412 | |
0f2d19dd JB |
3413 | void |
3414 | scm_init_eval () | |
0f2d19dd | 3415 | { |
33b97402 MD |
3416 | scm_init_opts (scm_evaluator_traps, |
3417 | scm_evaluator_trap_table, | |
3418 | SCM_N_EVALUATOR_TRAPS); | |
3419 | scm_init_opts (scm_eval_options_interface, | |
3420 | scm_eval_opts, | |
3421 | SCM_N_EVAL_OPTIONS); | |
3422 | ||
0f2d19dd | 3423 | scm_tc16_promise = scm_newsmob (&promsmob); |
b8229a3b | 3424 | |
0f2d19dd JB |
3425 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); |
3426 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
3427 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
3428 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3429 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3430 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3431 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
3432 | ||
3433 | /* acros */ | |
0f2d19dd JB |
3434 | /* end of acros */ |
3435 | ||
dc19d1d2 JB |
3436 | scm_top_level_lookup_closure_var = |
3437 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 3438 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 3439 | |
6dbd0af5 MD |
3440 | #ifdef DEBUG_EXTENSIONS |
3441 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
3442 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3443 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3444 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
3445 | #endif | |
3446 | ||
0f2d19dd | 3447 | #include "eval.x" |
25eaf21a MD |
3448 | |
3449 | scm_add_feature ("delay"); | |
0f2d19dd | 3450 | } |
0f2d19dd | 3451 | |
6dbd0af5 | 3452 | #endif /* !DEVAL */ |