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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
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 | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
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 | ||
57 | #include <stdio.h> | |
58 | #include "_scm.h" | |
20e6290e JB |
59 | #include "debug.h" |
60 | #include "append.h" | |
61 | #include "alist.h" | |
62 | #include "sequences.h" | |
63 | #include "eq.h" | |
64 | #include "continuations.h" | |
65 | #include "throw.h" | |
66 | #include "smob.h" | |
67 | #include "markers.h" | |
68 | #include "procprop.h" | |
69 | #include "hashtab.h" | |
ac46ab16 | 70 | #include "hash.h" |
0f2d19dd | 71 | |
20e6290e JB |
72 | #ifdef DEBUG_EXTENSIONS |
73 | #include "debug.h" | |
74 | #endif /* DEBUG_EXTENSIONS */ | |
75 | ||
76 | #include "srcprop.h" | |
77 | #include "stackchk.h" | |
78 | ||
79 | #include "eval.h" | |
0f2d19dd JB |
80 | \f |
81 | ||
6dbd0af5 MD |
82 | /* The evaluator contains a plethora of EVAL symbols. |
83 | * This is an attempt at explanation. | |
84 | * | |
85 | * The following macros should be used in code which is read twice | |
86 | * (where the choice of evaluator is hard soldered): | |
87 | * | |
88 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
89 | * Originally, it is defined to scm_ceval, but is redefined to | |
90 | * scm_deval during the second pass. | |
91 | * | |
92 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
93 | * only side effects of expressions matter. All immediates are | |
94 | * ignored. | |
95 | * | |
96 | * EVALIM is used when it is known that the expression is an | |
97 | * immediate. (This macro never calls an evaluator.) | |
98 | * | |
99 | * EVALCAR evaluates the car of an expression. | |
100 | * | |
101 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
102 | * car is a lisp cell. | |
103 | * | |
104 | * The following macros should be used in code which is read once | |
105 | * (where the choice of evaluator is dynamic): | |
106 | * | |
107 | * XEVAL takes care of immediates without calling an evaluator. It | |
108 | * then calls scm_ceval *or* scm_deval, depending on the debugging | |
109 | * mode. | |
110 | * | |
111 | * XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval | |
112 | * depending on the debugging mode. | |
113 | * | |
114 | * The main motivation for keeping this plethora is efficiency | |
115 | * together with maintainability (=> locality of code). | |
116 | */ | |
117 | ||
0f2d19dd JB |
118 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR(x)) \ |
119 | ? *scm_lookupcar(x, env) \ | |
120 | : SCM_CEVAL(SCM_CAR(x), env)) | |
121 | ||
122 | #ifdef MEMOIZE_LOCALS | |
6dbd0af5 | 123 | #define EVALIM(x, env) (SCM_ILOCP(x)?*scm_ilookup((x), env):x) |
0f2d19dd | 124 | #else |
6dbd0af5 | 125 | #define EVALIM(x, env) x |
0f2d19dd JB |
126 | #endif |
127 | #define EVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x))\ | |
128 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 129 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
130 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
131 | : EVALCELLCAR(x, env)) | |
132 | #ifdef DEBUG_EXTENSIONS | |
133 | #define XEVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x)) \ | |
134 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 135 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
136 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
137 | : (SCM_SYMBOLP(SCM_CAR(x)) \ | |
138 | ? *scm_lookupcar(x, env) \ | |
139 | : (*scm_ceval_ptr) (SCM_CAR(x), env))) | |
140 | #else | |
141 | #define XEVALCAR(x, env) EVALCAR(x, env) | |
142 | #endif | |
143 | ||
e2806c10 | 144 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
145 | |
146 | #ifdef MEMOIZE_LOCALS | |
147 | #ifdef __STDC__ | |
148 | SCM * | |
149 | scm_ilookup (SCM iloc, SCM env) | |
150 | #else | |
151 | SCM * | |
152 | scm_ilookup (iloc, env) | |
153 | SCM iloc; | |
154 | SCM env; | |
155 | #endif | |
156 | { | |
157 | register int ir = SCM_IFRAME (iloc); | |
158 | register SCM er = env; | |
159 | for (; 0 != ir; --ir) | |
160 | er = SCM_CDR (er); | |
161 | er = SCM_CAR (er); | |
162 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
163 | er = SCM_CDR (er); | |
164 | if (SCM_ICDRP (iloc)) | |
165 | return &SCM_CDR (er); | |
166 | return &SCM_CAR (SCM_CDR (er)); | |
167 | } | |
168 | #endif | |
169 | ||
170 | #ifdef __STDC__ | |
171 | SCM * | |
172 | scm_lookupcar (SCM vloc, SCM genv) | |
173 | #else | |
174 | SCM * | |
175 | scm_lookupcar (vloc, genv) | |
176 | SCM vloc; | |
177 | SCM genv; | |
178 | #endif | |
179 | { | |
180 | SCM env = genv; | |
181 | register SCM *al, fl, var = SCM_CAR (vloc); | |
182 | #ifdef MEMOIZE_LOCALS | |
183 | register SCM iloc = SCM_ILOC00; | |
184 | #endif | |
185 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
186 | { | |
187 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
188 | break; | |
189 | al = &SCM_CAR (env); | |
190 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) | |
191 | { | |
192 | if (SCM_NCONSP (fl)) | |
193 | if (fl == var) | |
194 | { | |
195 | #ifdef MEMOIZE_LOCALS | |
196 | SCM_CAR (vloc) = iloc + SCM_ICDR; | |
197 | #endif | |
198 | return &SCM_CDR (*al); | |
199 | } | |
200 | else | |
201 | break; | |
202 | al = &SCM_CDR (*al); | |
203 | if (SCM_CAR (fl) == var) | |
204 | { | |
205 | #ifdef MEMOIZE_LOCALS | |
206 | #ifndef RECKLESS /* letrec inits to SCM_UNDEFINED */ | |
207 | if (SCM_UNBNDP (SCM_CAR (*al))) | |
208 | { | |
209 | env = SCM_EOL; | |
210 | goto errout; | |
211 | } | |
212 | #endif | |
213 | SCM_CAR (vloc) = iloc; | |
214 | #endif | |
215 | return &SCM_CAR (*al); | |
216 | } | |
217 | #ifdef MEMOIZE_LOCALS | |
218 | iloc += SCM_IDINC; | |
219 | #endif | |
220 | } | |
221 | #ifdef MEMOIZE_LOCALS | |
222 | iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC); | |
223 | #endif | |
224 | } | |
225 | { | |
226 | SCM top_thunk, vcell; | |
227 | if (SCM_NIMP(env)) | |
228 | { | |
229 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
230 | env = SCM_CDR (env); | |
231 | } | |
232 | else | |
233 | top_thunk = SCM_BOOL_F; | |
234 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
235 | if (vcell == SCM_BOOL_F) | |
236 | goto errout; | |
237 | else | |
238 | var = vcell; | |
239 | } | |
240 | #ifndef RECKLESS | |
241 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) | |
242 | { | |
243 | var = SCM_CAR (var); | |
244 | errout: | |
f5bf2977 | 245 | /* scm_everr (vloc, genv,...) */ |
01f61221 | 246 | scm_error (scm_misc_error_key, |
f5bf2977 GH |
247 | NULL, |
248 | SCM_NULLP (env) | |
249 | ? "Unbound variable: %S" | |
250 | : "Damaged environment: %S", | |
251 | scm_listify (var, SCM_UNDEFINED), | |
252 | SCM_BOOL_F); | |
0f2d19dd JB |
253 | } |
254 | #endif | |
255 | SCM_CAR (vloc) = var + 1; | |
256 | /* Except wait...what if the var is not a vcell, | |
257 | * but syntax or something.... | |
258 | */ | |
259 | return &SCM_CDR (var); | |
260 | } | |
261 | ||
262 | #define unmemocar scm_unmemocar | |
263 | #ifdef __STDC__ | |
264 | SCM | |
265 | scm_unmemocar (SCM form, SCM env) | |
266 | #else | |
267 | SCM | |
268 | scm_unmemocar (form, env) | |
269 | SCM form; | |
270 | SCM env; | |
271 | #endif | |
272 | { | |
6dbd0af5 | 273 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 274 | register int ir; |
6dbd0af5 | 275 | #endif |
0f2d19dd JB |
276 | SCM c; |
277 | ||
278 | if (SCM_IMP (form)) | |
279 | return form; | |
280 | c = SCM_CAR (form); | |
281 | if (1 == (c & 7)) | |
282 | SCM_CAR (form) = SCM_CAR (c - 1); | |
283 | #ifdef MEMOIZE_LOCALS | |
6dbd0af5 | 284 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
285 | else if (SCM_ILOCP (c)) |
286 | { | |
287 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
288 | env = SCM_CDR (env); | |
289 | env = SCM_CAR (SCM_CAR (env)); | |
290 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
291 | env = SCM_CDR (env); | |
292 | SCM_CAR (form) = SCM_ICDRP (c) ? env : SCM_CAR (env); | |
293 | } | |
6dbd0af5 | 294 | #endif |
0f2d19dd JB |
295 | #endif |
296 | return form; | |
297 | } | |
298 | ||
299 | #ifdef __STDC__ | |
300 | SCM | |
301 | scm_eval_car (SCM pair, SCM env) | |
302 | #else | |
303 | SCM | |
304 | scm_eval_car (pair, env) | |
305 | SCM pair; | |
306 | SCM env; | |
307 | #endif | |
308 | { | |
6dbd0af5 | 309 | return XEVALCAR (pair, env); |
0f2d19dd JB |
310 | } |
311 | ||
312 | \f | |
313 | /* | |
314 | * The following rewrite expressions and | |
315 | * some memoized forms have different syntax | |
316 | */ | |
317 | ||
318 | static char s_expression[] = "missing or extra expression"; | |
319 | static char s_test[] = "bad test"; | |
320 | static char s_body[] = "bad body"; | |
321 | static char s_bindings[] = "bad bindings"; | |
322 | static char s_variable[] = "bad variable"; | |
323 | static char s_clauses[] = "bad or missing clauses"; | |
324 | static char s_formals[] = "bad formals"; | |
325 | #define ASSYNT(_cond, _arg, _pos, _subr) if(!(_cond))scm_wta(_arg, (char *)_pos, _subr); | |
326 | ||
327 | SCM scm_i_dot, scm_i_quote, scm_i_quasiquote, scm_i_lambda, scm_i_let, | |
328 | scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply; | |
329 | SCM scm_i_name; | |
6dbd0af5 MD |
330 | SCM scm_i_define, scm_i_and, scm_i_begin, scm_i_case, scm_i_cond, |
331 | scm_i_do, scm_i_if, scm_i_let, scm_i_letrec, scm_i_letstar, | |
332 | scm_i_or, scm_i_set, scm_i_atapply, scm_i_atcall_cc; | |
0f2d19dd JB |
333 | static char s_quasiquote[] = "quasiquote"; |
334 | static char s_delay[] = "delay"; | |
6dbd0af5 MD |
335 | static char s_undefine[] = "undefine"; |
336 | #ifdef DEBUG_EXTENSIONS | |
337 | SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame; | |
338 | SCM scm_i_trace; | |
339 | #endif | |
0f2d19dd JB |
340 | |
341 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
342 | ||
343 | ||
344 | #ifdef __STDC__ | |
345 | static void | |
346 | bodycheck (SCM xorig, SCM *bodyloc, char *what) | |
347 | #else | |
348 | static void | |
349 | bodycheck (xorig, bodyloc, what) | |
350 | SCM xorig; | |
351 | SCM *bodyloc; | |
352 | char *what; | |
353 | #endif | |
354 | { | |
355 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, s_expression); | |
356 | } | |
357 | ||
358 | ||
359 | #ifdef __STDC__ | |
360 | SCM | |
361 | scm_m_quote (SCM xorig, SCM env) | |
362 | #else | |
363 | SCM | |
364 | scm_m_quote (xorig, env) | |
365 | SCM xorig; | |
366 | SCM env; | |
367 | #endif | |
368 | { | |
369 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "quote"); | |
370 | return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig)); | |
371 | } | |
372 | ||
373 | ||
374 | #ifdef __STDC__ | |
375 | SCM | |
376 | scm_m_begin (SCM xorig, SCM env) | |
377 | #else | |
378 | SCM | |
379 | scm_m_begin (xorig, env) | |
380 | SCM xorig; | |
381 | SCM env; | |
382 | #endif | |
383 | { | |
384 | ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, xorig, s_expression, "begin"); | |
385 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); | |
386 | } | |
387 | ||
388 | ||
389 | #ifdef __STDC__ | |
390 | SCM | |
391 | scm_m_if (SCM xorig, SCM env) | |
392 | #else | |
393 | SCM | |
394 | scm_m_if (xorig, env) | |
395 | SCM xorig; | |
396 | SCM env; | |
397 | #endif | |
398 | { | |
399 | int len = scm_ilength (SCM_CDR (xorig)); | |
400 | ASSYNT (len >= 2 && len <= 3, xorig, s_expression, "if"); | |
401 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); | |
402 | } | |
403 | ||
404 | ||
405 | #ifdef __STDC__ | |
406 | SCM | |
407 | scm_m_set (SCM xorig, SCM env) | |
408 | #else | |
409 | SCM | |
410 | scm_m_set (xorig, env) | |
411 | SCM xorig; | |
412 | SCM env; | |
413 | #endif | |
414 | { | |
6dbd0af5 MD |
415 | SCM x = SCM_CDR (xorig); |
416 | ASSYNT (2 == scm_ilength (x), xorig, s_expression, "set!"); | |
417 | ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)), | |
418 | xorig, s_variable, "set!"); | |
0f2d19dd JB |
419 | return scm_cons (SCM_IM_SET, x); |
420 | } | |
421 | ||
422 | ||
423 | #if 0 | |
424 | #ifdef __STDC__ | |
425 | SCM | |
426 | scm_m_vref (SCM xorig, SCM env) | |
427 | #else | |
428 | SCM | |
429 | scm_m_vref (xorig, env) | |
430 | SCM xorig; | |
431 | SCM env; | |
432 | #endif | |
433 | { | |
434 | SCM x = SCM_CDR (xorig); | |
435 | ASSYNT (1 == scm_ilength (x), xorig, s_expression, s_vref); | |
436 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) | |
437 | { | |
f5bf2977 | 438 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
01f61221 | 439 | scm_error (scm_misc_error_key, |
f5bf2977 GH |
440 | NULL, |
441 | "Bad variable: %S", | |
442 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED), | |
443 | SCM_BOOL_F); | |
0f2d19dd JB |
444 | } |
445 | ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), | |
446 | xorig, s_variable, s_vref); | |
447 | return | |
448 | return scm_cons (IM_VREF, x); | |
449 | } | |
450 | ||
451 | ||
452 | #ifdef __STDC__ | |
453 | SCM | |
454 | scm_m_vset (SCM xorig, SCM env) | |
455 | #else | |
456 | SCM | |
457 | scm_m_vset (xorig, env) | |
458 | SCM xorig; | |
459 | SCM env; | |
460 | #endif | |
461 | { | |
462 | SCM x = SCM_CDR (xorig); | |
463 | ASSYNT (3 == scm_ilength (x), xorig, s_expression, s_vset); | |
464 | ASSYNT (( DEFSCM_VARIABLEP (SCM_CAR (x)) | |
465 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
466 | xorig, s_variable, s_vset); | |
467 | return scm_cons (IM_VSET, x); | |
468 | } | |
469 | #endif | |
470 | ||
471 | ||
472 | #ifdef __STDC__ | |
473 | SCM | |
474 | scm_m_and (SCM xorig, SCM env) | |
475 | #else | |
476 | SCM | |
477 | scm_m_and (xorig, env) | |
478 | SCM xorig; | |
479 | SCM env; | |
480 | #endif | |
481 | { | |
482 | int len = scm_ilength (SCM_CDR (xorig)); | |
483 | ASSYNT (len >= 0, xorig, s_test, "and"); | |
484 | if (len >= 1) | |
485 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); | |
486 | else | |
487 | return SCM_BOOL_T; | |
488 | } | |
489 | ||
490 | ||
491 | #ifdef __STDC__ | |
492 | SCM | |
493 | scm_m_or (SCM xorig, SCM env) | |
494 | #else | |
495 | SCM | |
496 | scm_m_or (xorig, env) | |
497 | SCM xorig; | |
498 | SCM env; | |
499 | #endif | |
500 | { | |
501 | int len = scm_ilength (SCM_CDR (xorig)); | |
502 | ASSYNT (len >= 0, xorig, s_test, "or"); | |
503 | if (len >= 1) | |
504 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); | |
505 | else | |
506 | return SCM_BOOL_F; | |
507 | } | |
508 | ||
509 | ||
510 | #ifdef __STDC__ | |
511 | SCM | |
512 | scm_m_case (SCM xorig, SCM env) | |
513 | #else | |
514 | SCM | |
515 | scm_m_case (xorig, env) | |
516 | SCM xorig; | |
517 | SCM env; | |
518 | #endif | |
519 | { | |
520 | SCM proc, x = SCM_CDR (xorig); | |
521 | ASSYNT (scm_ilength (x) >= 2, xorig, s_clauses, "case"); | |
522 | while (SCM_NIMP (x = SCM_CDR (x))) | |
523 | { | |
524 | proc = SCM_CAR (x); | |
525 | ASSYNT (scm_ilength (proc) >= 2, xorig, s_clauses, "case"); | |
526 | ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 || scm_i_else == SCM_CAR (proc), | |
527 | xorig, s_clauses, "case"); | |
528 | } | |
529 | return scm_cons (SCM_IM_CASE, SCM_CDR (xorig)); | |
530 | } | |
531 | ||
532 | ||
533 | #ifdef __STDC__ | |
534 | SCM | |
535 | scm_m_cond (SCM xorig, SCM env) | |
536 | #else | |
537 | SCM | |
538 | scm_m_cond (xorig, env) | |
539 | SCM xorig; | |
540 | SCM env; | |
541 | #endif | |
542 | { | |
543 | SCM arg1, x = SCM_CDR (xorig); | |
544 | int len = scm_ilength (x); | |
545 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
546 | while (SCM_NIMP (x)) | |
547 | { | |
548 | arg1 = SCM_CAR (x); | |
549 | len = scm_ilength (arg1); | |
550 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
551 | if (scm_i_else == SCM_CAR (arg1)) | |
552 | { | |
553 | ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, xorig, "bad ELSE clause", "cond"); | |
554 | SCM_CAR (arg1) = SCM_BOOL_T; | |
555 | } | |
556 | if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1))) | |
557 | ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), | |
558 | xorig, "bad recipient", "cond"); | |
559 | x = SCM_CDR (x); | |
560 | } | |
561 | return scm_cons (SCM_IM_COND, SCM_CDR (xorig)); | |
562 | } | |
563 | ||
564 | ||
565 | #ifdef __STDC__ | |
566 | SCM | |
567 | scm_m_lambda (SCM xorig, SCM env) | |
568 | #else | |
569 | SCM | |
570 | scm_m_lambda (xorig, env) | |
571 | SCM xorig; | |
572 | SCM env; | |
573 | #endif | |
574 | { | |
575 | SCM proc, x = SCM_CDR (xorig); | |
576 | if (scm_ilength (x) < 2) | |
577 | goto badforms; | |
578 | proc = SCM_CAR (x); | |
579 | if SCM_NULLP | |
580 | (proc) goto memlambda; | |
581 | if SCM_IMP | |
582 | (proc) goto badforms; | |
583 | if SCM_SYMBOLP | |
584 | (proc) goto memlambda; | |
585 | if SCM_NCONSP | |
586 | (proc) goto badforms; | |
587 | while SCM_NIMP | |
588 | (proc) | |
589 | { | |
590 | if SCM_NCONSP | |
591 | (proc) | |
592 | if (!SCM_SYMBOLP (proc)) | |
593 | goto badforms; | |
594 | else | |
595 | goto memlambda; | |
596 | if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc)))) | |
597 | goto badforms; | |
598 | proc = SCM_CDR (proc); | |
599 | } | |
600 | if SCM_NNULLP | |
601 | (proc) | |
602 | badforms:scm_wta (xorig, s_formals, "lambda"); | |
603 | memlambda: | |
604 | bodycheck (xorig, &SCM_CDR (x), "lambda"); | |
605 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); | |
606 | } | |
607 | ||
608 | ||
609 | #ifdef __STDC__ | |
610 | SCM | |
611 | scm_m_letstar (SCM xorig, SCM env) | |
612 | #else | |
613 | SCM | |
614 | scm_m_letstar (xorig, env) | |
615 | SCM xorig; | |
616 | SCM env; | |
617 | #endif | |
618 | { | |
619 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
620 | int len = scm_ilength (x); | |
621 | ASSYNT (len >= 2, xorig, s_body, "let*"); | |
622 | proc = SCM_CAR (x); | |
623 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let*"); | |
6dbd0af5 | 624 | while SCM_NIMP (proc) |
0f2d19dd JB |
625 | { |
626 | arg1 = SCM_CAR (proc); | |
627 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let*"); | |
628 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let*"); | |
629 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
630 | varloc = &SCM_CDR (SCM_CDR (*varloc)); | |
631 | proc = SCM_CDR (proc); | |
632 | } | |
633 | x = scm_cons (vars, SCM_CDR (x)); | |
634 | bodycheck (xorig, &SCM_CDR (x), "let*"); | |
635 | return scm_cons (SCM_IM_LETSTAR, x); | |
636 | } | |
637 | ||
638 | /* DO gets the most radically altered syntax | |
639 | (do ((<var1> <init1> <step1>) | |
640 | (<var2> <init2>) | |
641 | ... ) | |
642 | (<test> <return>) | |
643 | <body>) | |
644 | ;; becomes | |
645 | (do_mem (varn ... var2 var1) | |
646 | (<init1> <init2> ... <initn>) | |
647 | (<test> <return>) | |
648 | (<body>) | |
649 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
650 | */ | |
651 | ||
652 | ||
653 | #ifdef __STDC__ | |
654 | SCM | |
655 | scm_m_do (SCM xorig, SCM env) | |
656 | #else | |
657 | SCM | |
658 | scm_m_do (xorig, env) | |
659 | SCM xorig; | |
660 | SCM env; | |
661 | #endif | |
662 | { | |
663 | SCM x = SCM_CDR (xorig), arg1, proc; | |
664 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
665 | SCM *initloc = &inits, *steploc = &steps; | |
666 | int len = scm_ilength (x); | |
667 | ASSYNT (len >= 2, xorig, s_test, "do"); | |
668 | proc = SCM_CAR (x); | |
669 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "do"); | |
670 | while SCM_NIMP | |
671 | (proc) | |
672 | { | |
673 | arg1 = SCM_CAR (proc); | |
674 | len = scm_ilength (arg1); | |
675 | ASSYNT (2 == len || 3 == len, xorig, s_bindings, "do"); | |
676 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "do"); | |
677 | /* vars reversed here, inits and steps reversed at evaluation */ | |
678 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
679 | arg1 = SCM_CDR (arg1); | |
680 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
681 | initloc = &SCM_CDR (*initloc); | |
682 | arg1 = SCM_CDR (arg1); | |
683 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
684 | steploc = &SCM_CDR (*steploc); | |
685 | proc = SCM_CDR (proc); | |
686 | } | |
687 | x = SCM_CDR (x); | |
688 | ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, s_test, "do"); | |
689 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); | |
690 | x = scm_cons2 (vars, inits, x); | |
691 | bodycheck (xorig, &SCM_CAR (SCM_CDR (SCM_CDR (x))), "do"); | |
692 | return scm_cons (SCM_IM_DO, x); | |
693 | } | |
694 | ||
6dbd0af5 MD |
695 | /* evalcar is small version of inline EVALCAR when we don't care about |
696 | * speed | |
697 | */ | |
698 | #define evalcar scm_eval_car | |
0f2d19dd JB |
699 | |
700 | #ifdef __STDC__ | |
701 | static SCM | |
702 | iqq (SCM form, SCM env, int depth) | |
703 | #else | |
704 | static SCM | |
705 | iqq (form, env, depth) | |
706 | SCM form; | |
707 | SCM env; | |
708 | int depth; | |
709 | #endif | |
710 | { | |
711 | SCM tmp; | |
712 | int edepth = depth; | |
713 | if SCM_IMP | |
714 | (form) return form; | |
715 | if (SCM_VECTORP (form)) | |
716 | { | |
717 | long i = SCM_LENGTH (form); | |
718 | SCM *data = SCM_VELTS (form); | |
719 | tmp = SCM_EOL; | |
720 | for (; --i >= 0;) | |
721 | tmp = scm_cons (data[i], tmp); | |
722 | return scm_vector (iqq (tmp, env, depth)); | |
723 | } | |
724 | if SCM_NCONSP | |
725 | (form) return form; | |
726 | tmp = SCM_CAR (form); | |
727 | if (scm_i_quasiquote == tmp) | |
728 | { | |
729 | depth++; | |
730 | goto label; | |
731 | } | |
732 | if (scm_i_unquote == tmp) | |
733 | { | |
734 | --depth; | |
735 | label: | |
736 | form = SCM_CDR (form); | |
737 | /* !!! might need a check here to be sure that form isn't a struct. */ | |
738 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), | |
739 | form, SCM_ARG1, s_quasiquote); | |
740 | if (0 == depth) | |
741 | return evalcar (form, env); | |
742 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
743 | } | |
744 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
745 | { | |
746 | tmp = SCM_CDR (tmp); | |
747 | if (0 == --edepth) | |
748 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
749 | } | |
750 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
751 | } | |
752 | ||
753 | /* Here are acros which return values rather than code. */ | |
754 | ||
755 | #ifdef __STDC__ | |
756 | SCM | |
757 | scm_m_quasiquote (SCM xorig, SCM env) | |
758 | #else | |
759 | SCM | |
760 | scm_m_quasiquote (xorig, env) | |
761 | SCM xorig; | |
762 | SCM env; | |
763 | #endif | |
764 | { | |
765 | SCM x = SCM_CDR (xorig); | |
766 | ASSYNT (scm_ilength (x) == 1, xorig, s_expression, s_quasiquote); | |
767 | return iqq (SCM_CAR (x), env, 1); | |
768 | } | |
769 | ||
770 | #ifdef __STDC__ | |
771 | SCM | |
772 | scm_m_delay (SCM xorig, SCM env) | |
773 | #else | |
774 | SCM | |
775 | scm_m_delay (xorig, env) | |
776 | SCM xorig; | |
777 | SCM env; | |
778 | #endif | |
779 | { | |
780 | ASSYNT (scm_ilength (xorig) == 2, xorig, s_expression, s_delay); | |
781 | xorig = SCM_CDR (xorig); | |
782 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
783 | env)); | |
784 | } | |
785 | ||
786 | #ifdef __STDC__ | |
787 | static SCM | |
788 | env_top_level (SCM env) | |
789 | #else | |
790 | static SCM | |
791 | env_top_level (env) | |
792 | SCM env; | |
793 | #endif | |
794 | { | |
795 | while (SCM_NIMP(env)) | |
796 | { | |
797 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR(env))) | |
798 | return SCM_CAR(env); | |
799 | env = SCM_CDR (env); | |
800 | } | |
801 | return SCM_BOOL_F; | |
802 | } | |
803 | ||
804 | #ifdef __STDC__ | |
805 | SCM | |
806 | scm_m_define (SCM x, SCM env) | |
807 | #else | |
808 | SCM | |
809 | scm_m_define (x, env) | |
810 | SCM x; | |
811 | SCM env; | |
812 | #endif | |
813 | { | |
814 | SCM proc, arg1 = x; | |
815 | x = SCM_CDR (x); | |
816 | /* ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ | |
817 | ASSYNT (scm_ilength (x) >= 2, arg1, s_expression, "define"); | |
818 | proc = SCM_CAR (x); | |
819 | x = SCM_CDR (x); | |
820 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
821 | { /* nested define syntax */ | |
822 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
823 | proc = SCM_CAR (proc); | |
824 | } | |
825 | ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), arg1, s_variable, "define"); | |
826 | ASSYNT (1 == scm_ilength (x), arg1, s_expression, "define"); | |
827 | if (SCM_TOP_LEVEL (env)) | |
828 | { | |
829 | x = evalcar (x, env); | |
6dbd0af5 | 830 | #ifdef DEBUG_EXTENSIONS |
b7ff98dd | 831 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x) && SCM_CLOSUREP (x)) |
6dbd0af5 MD |
832 | scm_set_procedure_property_x (x, scm_i_name, proc); |
833 | #endif | |
0f2d19dd JB |
834 | arg1 = scm_sym2vcell (proc, env_top_level (env), SCM_BOOL_T); |
835 | #if 0 | |
836 | #ifndef RECKLESS | |
837 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) | |
838 | && (SCM_CDR (arg1) != x)) | |
839 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
840 | else | |
841 | #endif | |
842 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
843 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd JB |
844 | #endif |
845 | SCM_CDR (arg1) = x; | |
846 | #ifdef SICP | |
847 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
848 | #else | |
849 | return SCM_UNSPECIFIED; | |
850 | #endif | |
851 | } | |
852 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
853 | } | |
6dbd0af5 MD |
854 | |
855 | SCM | |
856 | scm_m_undefine (x, env) | |
857 | SCM x, env; | |
858 | { | |
859 | SCM arg1 = x; | |
860 | x = SCM_CDR (x); | |
861 | ASSYNT (SCM_TOP_LEVEL (env), arg1, "bad placement ", s_undefine); | |
862 | ASSYNT (SCM_NIMP (x) && SCM_CONSP (x) && SCM_CDR (x) == SCM_EOL, | |
863 | arg1, s_expression, s_undefine); | |
864 | x = SCM_CAR (x); | |
865 | ASSYNT (SCM_NIMP (x) && SCM_SYMBOLP (x), arg1, s_variable, s_undefine); | |
866 | arg1 = scm_sym2vcell (x, env_top_level (env), SCM_BOOL_F); | |
867 | ASSYNT (SCM_NFALSEP (arg1) && !SCM_UNBNDP (SCM_CDR (arg1)), | |
868 | x, "variable already unbound ", s_undefine); | |
869 | #if 0 | |
870 | #ifndef RECKLESS | |
871 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == x)) | |
872 | scm_warn ("undefining built-in ", SCM_CHARS (x)); | |
873 | else | |
874 | #endif | |
875 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
876 | scm_warn ("redefining ", SCM_CHARS (x)); | |
877 | #endif | |
878 | SCM_CDR (arg1) = SCM_UNDEFINED; | |
879 | #ifdef SICP | |
880 | return SCM_CAR (arg1); | |
881 | #else | |
882 | return SCM_UNSPECIFIED; | |
883 | #endif | |
884 | } | |
885 | ||
0f2d19dd JB |
886 | /* end of acros */ |
887 | ||
888 | #ifdef __STDC__ | |
889 | SCM | |
890 | scm_m_letrec (SCM xorig, SCM env) | |
891 | #else | |
892 | SCM | |
893 | scm_m_letrec (xorig, env) | |
894 | SCM xorig; | |
895 | SCM env; | |
896 | #endif | |
897 | { | |
898 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
899 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
900 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
901 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
902 | ||
903 | ASRTSYNTAX (scm_ilength (x) >= 2, s_body); | |
904 | proc = SCM_CAR (x); | |
905 | if SCM_NULLP | |
906 | (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
907 | ASRTSYNTAX (scm_ilength (proc) >= 1, s_bindings); | |
908 | do | |
909 | { | |
910 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
911 | arg1 = SCM_CAR (proc); | |
912 | ASRTSYNTAX (2 == scm_ilength (arg1), s_bindings); | |
913 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), s_variable); | |
914 | vars = scm_cons (SCM_CAR (arg1), vars); | |
915 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
916 | initloc = &SCM_CDR (*initloc); | |
917 | } | |
918 | while SCM_NIMP | |
919 | (proc = SCM_CDR (proc)); | |
920 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); | |
921 | bodycheck (xorig, &SCM_CDR (SCM_CDR (cdrx)), what); | |
922 | return scm_cons (SCM_IM_LETREC, cdrx); | |
923 | } | |
924 | ||
925 | #ifdef __STDC__ | |
926 | SCM | |
927 | scm_m_let (SCM xorig, SCM env) | |
928 | #else | |
929 | SCM | |
930 | scm_m_let (xorig, env) | |
931 | SCM xorig; | |
932 | SCM env; | |
933 | #endif | |
934 | { | |
935 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
936 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
937 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
938 | ||
939 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
940 | proc = SCM_CAR (x); | |
941 | if (SCM_NULLP (proc) | |
942 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
943 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
944 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
945 | ASSYNT (SCM_NIMP (proc), xorig, s_bindings, "let"); | |
946 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ | |
947 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
948 | if (!SCM_SYMBOLP (proc)) | |
949 | scm_wta (xorig, s_bindings, "let"); /* bad let */ | |
950 | name = proc; /* named let, build equiv letrec */ | |
951 | x = SCM_CDR (x); | |
952 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
953 | proc = SCM_CAR (x); /* bindings scm_list */ | |
954 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let"); | |
955 | while SCM_NIMP | |
956 | (proc) | |
957 | { /* vars and inits both in order */ | |
958 | arg1 = SCM_CAR (proc); | |
959 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let"); | |
960 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let"); | |
961 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); | |
962 | varloc = &SCM_CDR (*varloc); | |
963 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
964 | initloc = &SCM_CDR (*initloc); | |
965 | proc = SCM_CDR (proc); | |
966 | } | |
967 | return | |
968 | scm_m_letrec (scm_cons2 (scm_i_let, | |
969 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
970 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
971 | env); | |
972 | } | |
973 | ||
974 | ||
975 | #ifdef __STDC__ | |
976 | SCM | |
977 | scm_m_apply (SCM xorig, SCM env) | |
978 | #else | |
979 | SCM | |
980 | scm_m_apply (xorig, env) | |
981 | SCM xorig; | |
982 | SCM env; | |
983 | #endif | |
984 | { | |
985 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, xorig, s_expression, "@apply"); | |
986 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); | |
987 | } | |
988 | ||
e2806c10 | 989 | #define s_atcall_cc (SCM_ISYMCHARS(SCM_IM_CONT)+1) |
0f2d19dd JB |
990 | |
991 | #ifdef __STDC__ | |
992 | SCM | |
993 | scm_m_cont (SCM xorig, SCM env) | |
994 | #else | |
995 | SCM | |
996 | scm_m_cont (xorig, env) | |
997 | SCM xorig; | |
998 | SCM env; | |
999 | #endif | |
1000 | { | |
1001 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "@call-with-current-continuation"); | |
1002 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); | |
1003 | } | |
1004 | ||
6dbd0af5 MD |
1005 | /* scm_unmemocopy takes a memoized expression together with its |
1006 | * environment and rewrites it to its original form. Thus, it is the | |
1007 | * inversion of the rewrite rules above. The procedure is not | |
1008 | * optimized for speed. It's used in scm_iprin1 when printing the | |
1009 | * code of a closure, in scm_procedure_source and in scm_expr_stack | |
1010 | * when generating the source for a stackframe. | |
1011 | */ | |
1012 | ||
1013 | #ifdef __STDC__ | |
1014 | static SCM | |
1015 | unmemocopy (SCM x, SCM env) | |
1016 | #else | |
1017 | static SCM | |
1018 | unmemocopy (x, env) | |
1019 | SCM x; | |
1020 | SCM env; | |
1021 | #endif | |
1022 | { | |
1023 | SCM ls, z; | |
1024 | #ifdef DEBUG_EXTENSIONS | |
1025 | SCM p; | |
1026 | #endif | |
1027 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
1028 | return x; | |
1029 | #ifdef DEBUG_EXTENSIONS | |
1030 | p = scm_whash_lookup (scm_source_whash, x); | |
1031 | #endif | |
1032 | switch (SCM_TYP7 (x)) | |
1033 | { | |
1034 | case (127 & SCM_IM_AND): | |
1035 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
1036 | break; | |
1037 | case (127 & SCM_IM_BEGIN): | |
1038 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
1039 | break; | |
1040 | case (127 & SCM_IM_CASE): | |
1041 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
1042 | break; | |
1043 | case (127 & SCM_IM_COND): | |
1044 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
1045 | break; | |
1046 | case (127 & SCM_IM_DO): | |
1047 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
1048 | goto transform; | |
1049 | case (127 & SCM_IM_IF): | |
1050 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
1051 | break; | |
1052 | case (127 & SCM_IM_LET): | |
1053 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
1054 | goto transform; | |
1055 | case (127 & SCM_IM_LETREC): | |
1056 | { | |
1057 | SCM f, v, e, s; | |
1058 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
1059 | transform: | |
1060 | x = SCM_CDR (x); | |
1061 | f = v = SCM_CAR (x); | |
1062 | x = SCM_CDR (x); | |
e2806c10 | 1063 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
1064 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
1065 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
1066 | env = z; | |
1067 | s = SCM_CAR (ls) == scm_i_do | |
1068 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
1069 | : f; | |
1070 | z = SCM_EOL; | |
1071 | do | |
1072 | { | |
1073 | z = scm_acons (SCM_CAR (v), | |
1074 | scm_cons (SCM_CAR (e), | |
1075 | SCM_CAR (s) == SCM_CAR (v) | |
1076 | ? SCM_EOL | |
1077 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
1078 | z); | |
1079 | v = SCM_CDR (v); | |
1080 | e = SCM_CDR (e); | |
1081 | s = SCM_CDR (s); | |
1082 | } | |
1083 | while SCM_NIMP (v); | |
1084 | SCM_CDR (ls) = z = scm_cons (z, SCM_UNSPECIFIED); | |
1085 | if (SCM_CAR (ls) == scm_i_do) | |
1086 | { | |
1087 | x = SCM_CDR (x); | |
1088 | z = (SCM_CDR (z) = scm_cons (unmemocopy (SCM_CAR (x), env), | |
1089 | SCM_UNSPECIFIED)); | |
1090 | x = (SCM) (&SCM_CAR (SCM_CDR (x)) - 1); | |
1091 | } | |
1092 | break; | |
1093 | } | |
1094 | case (127 & SCM_IM_LETSTAR): | |
1095 | { | |
1096 | SCM b, y; | |
1097 | x = SCM_CDR (x); | |
1098 | b = SCM_CAR (x); | |
1099 | y = SCM_EOL; | |
1100 | if SCM_IMP (b) | |
1101 | { | |
e2806c10 | 1102 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1103 | goto letstar; |
1104 | } | |
1105 | y = z = scm_acons (SCM_CAR (b), | |
1106 | unmemocar ( | |
1107 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1108 | SCM_UNSPECIFIED); | |
e2806c10 | 1109 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1110 | b = SCM_CDR (SCM_CDR (b)); |
1111 | if (SCM_IMP (b)) | |
1112 | { | |
1113 | SCM_SETCDR (y, SCM_EOL); | |
1114 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1115 | break; | |
1116 | } | |
1117 | do | |
1118 | { | |
1119 | z = (SCM_CDR (z) = scm_acons (SCM_CAR (b), | |
1120 | unmemocar ( | |
1121 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1122 | SCM_UNSPECIFIED)); | |
e2806c10 | 1123 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1124 | b = SCM_CDR (SCM_CDR (b)); |
1125 | } | |
1126 | while SCM_NIMP (b); | |
1127 | SCM_CDR (z) = SCM_EOL; | |
1128 | letstar: | |
1129 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1130 | break; | |
1131 | } | |
1132 | case (127 & SCM_IM_OR): | |
1133 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1134 | break; | |
1135 | case (127 & SCM_IM_LAMBDA): | |
1136 | x = SCM_CDR (x); | |
1137 | ls = scm_cons (scm_i_lambda, | |
1138 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1139 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1140 | break; |
1141 | case (127 & SCM_IM_QUOTE): | |
1142 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1143 | break; | |
1144 | case (127 & SCM_IM_SET): | |
1145 | ls = z = scm_cons (scm_i_set, SCM_UNSPECIFIED); | |
1146 | break; | |
1147 | case (127 & SCM_IM_DEFINE): | |
1148 | { | |
1149 | SCM n; | |
1150 | x = SCM_CDR (x); | |
1151 | ls = scm_cons (scm_i_define, | |
1152 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1153 | if (SCM_NNULLP (env)) | |
1154 | SCM_CAR (SCM_CAR (env)) = scm_cons (n, SCM_CAR (SCM_CAR (env))); | |
1155 | break; | |
1156 | } | |
1157 | case (127 & SCM_MAKISYM (0)): | |
1158 | z = SCM_CAR (x); | |
1159 | if (!SCM_ISYMP (z)) | |
1160 | goto unmemo; | |
1161 | switch SCM_ISYMNUM (z) | |
1162 | { | |
1163 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1164 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1165 | goto loop; | |
1166 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1167 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1168 | goto loop; | |
1169 | default: | |
1170 | } | |
1171 | unmemo: | |
1172 | default: | |
1173 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1174 | SCM_UNSPECIFIED), | |
1175 | env); | |
1176 | } | |
1177 | loop: | |
1178 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
1179 | z = (SCM_CDR (z) = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1180 | SCM_UNSPECIFIED), | |
1181 | env)); | |
1182 | SCM_CDR (z) = x; | |
1183 | #ifdef DEBUG_EXTENSIONS | |
1184 | if (SCM_NFALSEP (p)) | |
1185 | scm_whash_insert (scm_source_whash, ls, p); | |
1186 | #endif | |
1187 | return ls; | |
1188 | } | |
1189 | ||
1190 | #ifdef __STDC__ | |
1191 | SCM | |
1192 | scm_unmemocopy (SCM x, SCM env) | |
1193 | #else | |
1194 | SCM | |
1195 | scm_unmemocopy (x, env) | |
1196 | SCM x; | |
1197 | SCM env; | |
1198 | #endif | |
1199 | { | |
1200 | if (SCM_NNULLP (env)) | |
1201 | /* Make a copy of the lowest frame to protect it from | |
1202 | modifications by SCM_IM_DEFINE */ | |
1203 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1204 | else | |
1205 | return unmemocopy (x, env); | |
1206 | } | |
1207 | ||
0f2d19dd JB |
1208 | #ifndef RECKLESS |
1209 | #ifdef __STDC__ | |
1210 | int | |
1211 | scm_badargsp (SCM formals, SCM args) | |
1212 | #else | |
1213 | int | |
1214 | scm_badargsp (formals, args) | |
1215 | SCM formals; | |
1216 | SCM args; | |
1217 | #endif | |
1218 | { | |
1219 | while SCM_NIMP | |
1220 | (formals) | |
1221 | { | |
1222 | if SCM_NCONSP | |
1223 | (formals) return 0; | |
1224 | if SCM_IMP | |
1225 | (args) return 1; | |
1226 | formals = SCM_CDR (formals); | |
1227 | args = SCM_CDR (args); | |
1228 | } | |
1229 | return SCM_NNULLP (args) ? 1 : 0; | |
1230 | } | |
1231 | #endif | |
1232 | ||
1233 | ||
1234 | \f | |
1235 | long scm_tc16_macro; | |
1236 | ||
6dbd0af5 MD |
1237 | #ifdef __STDC__ |
1238 | SCM | |
1239 | scm_eval_args (SCM l, SCM env) | |
1240 | #else | |
1241 | SCM | |
1242 | scm_eval_args (l, env) | |
1243 | SCM l; | |
1244 | SCM env; | |
1245 | #endif | |
1246 | { | |
1247 | SCM res = SCM_EOL, *lloc = &res; | |
1248 | while (SCM_NIMP (l)) | |
1249 | { | |
1250 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
1251 | lloc = &SCM_CDR (*lloc); | |
1252 | l = SCM_CDR (l); | |
1253 | } | |
1254 | return res; | |
1255 | } | |
0f2d19dd JB |
1256 | #endif /* !DEVAL */ |
1257 | ||
6dbd0af5 MD |
1258 | |
1259 | /* SECTION: This code is specific for the debugging support. One | |
1260 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1261 | * defined. | |
1262 | */ | |
1263 | ||
1264 | #ifndef DEVAL | |
1265 | ||
1266 | #define SCM_APPLY scm_apply | |
1267 | #define PREP_APPLY(proc, args) | |
1268 | #define ENTER_APPLY | |
1269 | #define RETURN(x) return x; | |
b7ff98dd MD |
1270 | #ifdef STACK_CHECKING |
1271 | #ifndef NO_CEVAL_STACK_CHECKING | |
1272 | #define EVAL_STACK_CHECKING | |
1273 | #endif | |
6dbd0af5 MD |
1274 | #endif |
1275 | ||
1276 | #else /* !DEVAL */ | |
1277 | ||
0f2d19dd JB |
1278 | #undef SCM_CEVAL |
1279 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1280 | #undef SCM_APPLY | |
1281 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1282 | #undef PREP_APPLY |
1283 | #define PREP_APPLY(p, l) \ | |
1284 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1285 | #undef ENTER_APPLY | |
1286 | #define ENTER_APPLY \ | |
1287 | {\ | |
b7ff98dd | 1288 | SCM_SET_ARGSREADY (debug);\ |
6dbd0af5 | 1289 | if (CHECK_APPLY)\ |
b7ff98dd | 1290 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1291 | {\ |
b7ff98dd MD |
1292 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
1293 | SCM_SET_TRACED_FRAME (debug);\ | |
1294 | if (SCM_CHEAPTRAPS_P)\ | |
6dbd0af5 MD |
1295 | {\ |
1296 | tmp = scm_make_debugobj ((scm_debug_frame *) &debug);\ | |
1297 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ | |
1298 | }\ | |
1299 | else\ | |
1300 | {\ | |
1301 | scm_make_cont (&tmp);\ | |
1302 | if (!setjmp (SCM_JMPBUF (tmp)))\ | |
1303 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ | |
1304 | }\ | |
1305 | }\ | |
1306 | } | |
0f2d19dd JB |
1307 | #undef RETURN |
1308 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1309 | #ifdef STACK_CHECKING |
1310 | #ifndef EVAL_STACK_CHECKING | |
1311 | #define EVAL_STACK_CHECKING | |
1312 | #endif | |
6dbd0af5 MD |
1313 | #endif |
1314 | ||
1315 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1316 | * *fixme*: Although efficiency is important here, this state variable | |
1317 | * should probably not be a global. It should be related to the | |
1318 | * current repl. | |
1319 | */ | |
1320 | ||
1321 | #ifdef __STDC__ | |
1322 | SCM (*scm_ceval_ptr) (SCM exp, SCM env); | |
0f2d19dd | 1323 | #else |
6dbd0af5 | 1324 | SCM (*scm_ceval_ptr) (); |
0f2d19dd JB |
1325 | #endif |
1326 | ||
1646d37b | 1327 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1328 | * information stack frame. It is accessed very often from the |
1329 | * debugging evaluator, so it should probably not be indirectly | |
1330 | * addressed. Better to save and restore it from the current root at | |
1331 | * any stack swaps. | |
1332 | */ | |
1333 | ||
1646d37b MD |
1334 | #ifndef USE_THREADS |
1335 | scm_debug_frame *scm_last_debug_frame; | |
1336 | #endif | |
6dbd0af5 MD |
1337 | |
1338 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1339 | * stack frames at each real stack frame. | |
1340 | */ | |
1341 | ||
1342 | int scm_debug_eframe_size; | |
1343 | ||
b7ff98dd | 1344 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 MD |
1345 | |
1346 | scm_option scm_debug_opts[] = { | |
b7ff98dd MD |
1347 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1348 | "*Flyweight representation of the stack at traps." }, | |
1349 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1350 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1351 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1352 | "Record procedure names at definition." }, | |
1353 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1354 | "Display backtrace in anti-chronological order." }, | |
1355 | { SCM_OPTION_INTEGER, "frames", 2, | |
1356 | "Maximum number of tail-recursive frames in backtrace." }, | |
1357 | { SCM_OPTION_INTEGER, "depth", 80, "Maximal length of backtrace." }, | |
1358 | { SCM_OPTION_BOOLEAN, "backtrace", 0, | |
1359 | "Show backtrace on error (use debugging evaluator)." }, | |
1360 | { SCM_OPTION_BOOLEAN, "deval", 0, "Use the debugging evaluator." }, | |
1361 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (0 = no check)." } | |
6dbd0af5 MD |
1362 | }; |
1363 | ||
1364 | scm_option scm_evaluator_trap_table[] = { | |
b7ff98dd MD |
1365 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1366 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1367 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1368 | }; |
1369 | ||
1370 | SCM | |
1371 | scm_deval_args (l, env, lloc) | |
1372 | SCM l, env, *lloc; | |
0f2d19dd | 1373 | { |
6dbd0af5 | 1374 | SCM *res = lloc; |
0f2d19dd JB |
1375 | while (SCM_NIMP (l)) |
1376 | { | |
1377 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
1378 | lloc = &SCM_CDR (*lloc); | |
1379 | l = SCM_CDR (l); | |
1380 | } | |
6dbd0af5 | 1381 | return *res; |
0f2d19dd JB |
1382 | } |
1383 | ||
6dbd0af5 MD |
1384 | #endif /* !DEVAL */ |
1385 | ||
1386 | ||
1387 | /* SECTION: Some local definitions for the evaluator. | |
1388 | */ | |
1389 | ||
1390 | #ifndef DEVAL | |
1391 | #ifdef SCM_FLOATS | |
1392 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1393 | #else | |
1394 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1395 | #endif | |
1396 | #endif /* DEVAL */ | |
1397 | ||
1398 | ||
1399 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1400 | * three heads. This code is compiled twice. | |
1401 | */ | |
1402 | ||
0f2d19dd JB |
1403 | #if 0 |
1404 | #ifdef __STDC__ | |
1405 | SCM | |
1406 | scm_ceval (SCM x, SCM env) | |
1407 | #else | |
1408 | SCM | |
1409 | scm_ceval (x, env) | |
1410 | SCM x; | |
1411 | SCM env; | |
1412 | #endif | |
1413 | {} | |
1414 | #endif | |
1415 | #if 0 | |
1416 | #ifdef __STDC__ | |
1417 | SCM | |
1418 | scm_deval (SCM x, SCM env) | |
1419 | #else | |
1420 | SCM | |
1421 | scm_deval (x, env) | |
1422 | SCM x; | |
1423 | SCM env; | |
1424 | #endif | |
1425 | {} | |
1426 | #endif | |
1427 | ||
6dbd0af5 MD |
1428 | #ifdef __STDC__ |
1429 | SCM | |
1430 | SCM_CEVAL (SCM x, SCM env) | |
0f2d19dd | 1431 | #else |
6dbd0af5 | 1432 | SCM |
0f2d19dd JB |
1433 | SCM_CEVAL (x, env) |
1434 | SCM x; | |
1435 | SCM env; | |
6dbd0af5 | 1436 | #endif |
0f2d19dd JB |
1437 | { |
1438 | union | |
1439 | { | |
1440 | SCM *lloc; | |
1441 | SCM arg1; | |
1442 | } t; | |
6dbd0af5 MD |
1443 | SCM proc, arg2; |
1444 | #ifdef DEVAL | |
1445 | struct | |
1446 | { | |
1447 | scm_debug_frame *prev; | |
1448 | long status; | |
1449 | scm_debug_info vect[scm_debug_eframe_size]; | |
1450 | scm_debug_info *info; | |
1451 | } debug; | |
1646d37b | 1452 | debug.prev = scm_last_debug_frame; |
6dbd0af5 MD |
1453 | debug.status = scm_debug_eframe_size; |
1454 | debug.info = &debug.vect[0]; | |
1646d37b | 1455 | scm_last_debug_frame = (scm_debug_frame *) &debug; |
6dbd0af5 | 1456 | #endif |
b7ff98dd MD |
1457 | #ifdef EVAL_STACK_CHECKING |
1458 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1459 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1460 | { |
b7ff98dd | 1461 | #ifdef DEVAL |
6dbd0af5 MD |
1462 | debug.info->e.exp = x; |
1463 | debug.info->e.env = env; | |
b7ff98dd | 1464 | #endif |
6dbd0af5 MD |
1465 | scm_report_stack_overflow (); |
1466 | } | |
1467 | #endif | |
1468 | #ifdef DEVAL | |
1469 | goto start; | |
1470 | #endif | |
1471 | loopnoap: | |
1472 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1473 | loop: | |
1474 | #ifdef DEVAL | |
1475 | #if 0 /* This will probably never have any practical use ... */ | |
1476 | if (CHECK_EXIT) | |
1477 | { | |
b7ff98dd | 1478 | if (SINGLE_STEP || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 MD |
1479 | { |
1480 | SINGLE_STEP = 0; | |
b7ff98dd MD |
1481 | SCM_RESET_DEBUG_MODE; |
1482 | SCM_CLEAR_TRACED_FRAME (debug); | |
6dbd0af5 MD |
1483 | scm_make_cont (&t.arg1); |
1484 | if (!setjmp (SCM_JMPBUF (t.arg1))) | |
1485 | scm_ithrow (scm_i_exit_tail, scm_cons (t.arg1, SCM_EOL), 0); | |
1486 | } | |
1487 | } | |
1488 | nextframe: | |
1489 | #endif | |
b7ff98dd MD |
1490 | SCM_CLEAR_ARGSREADY (debug); |
1491 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 MD |
1492 | --debug.info; |
1493 | else if (++debug.info == (scm_debug_info *) &debug.info) | |
1494 | { | |
b7ff98dd | 1495 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1496 | debug.info -= 2; |
1497 | } | |
1498 | start: | |
1499 | debug.info->e.exp = x; | |
1500 | debug.info->e.env = env; | |
1501 | if (CHECK_ENTRY) | |
b7ff98dd | 1502 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1503 | { |
b7ff98dd MD |
1504 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1505 | SCM_SET_TAILREC (debug); | |
1506 | SCM_ENTER_FRAME_P = 0; | |
1507 | SCM_RESET_DEBUG_MODE; | |
1508 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
1509 | t.arg1 = scm_make_debugobj ((scm_debug_frame *) &debug); |
1510 | else | |
1511 | { | |
1512 | scm_make_cont (&t.arg1); | |
1513 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1514 | { | |
1515 | x = SCM_THROW_VALUE (t.arg1); | |
1516 | if (SCM_IMP (x)) | |
1517 | { | |
1518 | RETURN (x); | |
1519 | } | |
1520 | else | |
1521 | /* This gives the possibility for the debugger to | |
1522 | modify the source expression before evaluation. */ | |
1523 | goto dispatch; | |
1524 | } | |
1525 | } | |
1526 | scm_ithrow (scm_i_enter_frame, | |
1527 | scm_cons2 (t.arg1, tail, | |
1528 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1529 | 0); | |
1530 | } | |
1531 | dispatch: | |
1532 | #endif | |
0f2d19dd | 1533 | SCM_ASYNC_TICK; |
0f2d19dd JB |
1534 | switch (SCM_TYP7 (x)) |
1535 | { | |
1536 | case scm_tcs_symbols: | |
1537 | /* Only happens when called at top level. | |
1538 | */ | |
1539 | x = scm_cons (x, SCM_UNDEFINED); | |
1540 | goto retval; | |
1541 | ||
1542 | case (127 & SCM_IM_AND): | |
1543 | x = SCM_CDR (x); | |
1544 | t.arg1 = x; | |
1545 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1546 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1547 | { | |
1548 | RETURN (SCM_BOOL_F); | |
1549 | } | |
1550 | else | |
1551 | x = t.arg1; | |
6dbd0af5 | 1552 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1553 | goto carloop; |
1554 | ||
1555 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1556 | cdrxnoap: |
1557 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1558 | cdrxbegin: |
1559 | x = SCM_CDR (x); | |
1560 | ||
1561 | begin: | |
1562 | t.arg1 = x; | |
1563 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1564 | { | |
1565 | SIDEVAL (SCM_CAR (x), env); | |
1566 | x = t.arg1; | |
1567 | } | |
1568 | ||
1569 | carloop: /* scm_eval car of last form in list */ | |
1570 | if (SCM_NCELLP (SCM_CAR (x))) | |
1571 | { | |
1572 | x = SCM_CAR (x); | |
6dbd0af5 | 1573 | RETURN (SCM_IMP (x) ? EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1574 | } |
1575 | ||
1576 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1577 | { | |
1578 | retval: | |
6dbd0af5 | 1579 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1580 | } |
1581 | ||
1582 | x = SCM_CAR (x); | |
1583 | goto loop; /* tail recurse */ | |
1584 | ||
1585 | ||
1586 | case (127 & SCM_IM_CASE): | |
1587 | x = SCM_CDR (x); | |
1588 | t.arg1 = EVALCAR (x, env); | |
1589 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1590 | { | |
1591 | proc = SCM_CAR (x); | |
1592 | if (scm_i_else == SCM_CAR (proc)) | |
1593 | { | |
1594 | x = SCM_CDR (proc); | |
6dbd0af5 | 1595 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1596 | goto begin; |
1597 | } | |
1598 | proc = SCM_CAR (proc); | |
1599 | while (SCM_NIMP (proc)) | |
1600 | { | |
1601 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1602 | { | |
1603 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1604 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1605 | goto begin; |
1606 | } | |
1607 | proc = SCM_CDR (proc); | |
1608 | } | |
1609 | } | |
6dbd0af5 | 1610 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1611 | |
1612 | ||
1613 | case (127 & SCM_IM_COND): | |
1614 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1615 | { | |
1616 | proc = SCM_CAR (x); | |
1617 | t.arg1 = EVALCAR (proc, env); | |
1618 | if (SCM_NFALSEP (t.arg1)) | |
1619 | { | |
1620 | x = SCM_CDR (proc); | |
6dbd0af5 | 1621 | if SCM_NULLP (x) |
0f2d19dd | 1622 | { |
6dbd0af5 | 1623 | RETURN (t.arg1) |
0f2d19dd JB |
1624 | } |
1625 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1626 | { |
1627 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1628 | goto begin; | |
1629 | } | |
0f2d19dd JB |
1630 | proc = SCM_CDR (x); |
1631 | proc = EVALCAR (proc, env); | |
1632 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1633 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1634 | ENTER_APPLY; | |
0f2d19dd JB |
1635 | goto evap1; |
1636 | } | |
1637 | } | |
6dbd0af5 | 1638 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1639 | |
1640 | ||
1641 | case (127 & SCM_IM_DO): | |
1642 | x = SCM_CDR (x); | |
1643 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1644 | t.arg1 = SCM_EOL; /* values */ | |
1645 | while (SCM_NIMP (proc)) | |
1646 | { | |
1647 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1648 | proc = SCM_CDR (proc); | |
1649 | } | |
e2806c10 | 1650 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1651 | x = SCM_CDR (SCM_CDR (x)); |
1652 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1653 | { | |
1654 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1655 | { | |
1656 | t.arg1 = SCM_CAR (proc); /* body */ | |
1657 | SIDEVAL (t.arg1, env); | |
1658 | } | |
1659 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1660 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1661 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1662 | } |
1663 | x = SCM_CDR (proc); | |
1664 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1665 | RETURN (SCM_UNSPECIFIED); |
1666 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1667 | goto begin; |
1668 | ||
1669 | ||
1670 | case (127 & SCM_IM_IF): | |
1671 | x = SCM_CDR (x); | |
1672 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1673 | x = SCM_CDR (x); | |
1674 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1675 | { | |
1676 | RETURN (SCM_UNSPECIFIED); | |
1677 | } | |
6dbd0af5 | 1678 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1679 | goto carloop; |
1680 | ||
1681 | ||
1682 | case (127 & SCM_IM_LET): | |
1683 | x = SCM_CDR (x); | |
1684 | proc = SCM_CAR (SCM_CDR (x)); | |
1685 | t.arg1 = SCM_EOL; | |
1686 | do | |
1687 | { | |
1688 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1689 | } | |
1690 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1691 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1692 | x = SCM_CDR (x); |
6dbd0af5 | 1693 | goto cdrxnoap; |
0f2d19dd JB |
1694 | |
1695 | ||
1696 | case (127 & SCM_IM_LETREC): | |
1697 | x = SCM_CDR (x); | |
e2806c10 | 1698 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1699 | x = SCM_CDR (x); |
1700 | proc = SCM_CAR (x); | |
1701 | t.arg1 = SCM_EOL; | |
1702 | do | |
1703 | { | |
1704 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1705 | } | |
1706 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
1707 | SCM_CDR (SCM_CAR (env)) = t.arg1; | |
6dbd0af5 | 1708 | goto cdrxnoap; |
0f2d19dd JB |
1709 | |
1710 | ||
1711 | case (127 & SCM_IM_LETSTAR): | |
1712 | x = SCM_CDR (x); | |
1713 | proc = SCM_CAR (x); | |
1714 | if (SCM_IMP (proc)) | |
1715 | { | |
e2806c10 | 1716 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1717 | goto cdrxnoap; |
0f2d19dd JB |
1718 | } |
1719 | do | |
1720 | { | |
1721 | t.arg1 = SCM_CAR (proc); | |
1722 | proc = SCM_CDR (proc); | |
e2806c10 | 1723 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1724 | } |
1725 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1726 | goto cdrxnoap; |
0f2d19dd JB |
1727 | |
1728 | case (127 & SCM_IM_OR): | |
1729 | x = SCM_CDR (x); | |
1730 | t.arg1 = x; | |
1731 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1732 | { | |
1733 | x = EVALCAR (x, env); | |
1734 | if (SCM_NFALSEP (x)) | |
1735 | { | |
1736 | RETURN (x); | |
1737 | } | |
1738 | x = t.arg1; | |
1739 | } | |
6dbd0af5 | 1740 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1741 | goto carloop; |
1742 | ||
1743 | ||
1744 | case (127 & SCM_IM_LAMBDA): | |
1745 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1746 | ||
1747 | ||
1748 | case (127 & SCM_IM_QUOTE): | |
1749 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1750 | ||
1751 | ||
1752 | case (127 & SCM_IM_SET): | |
0f2d19dd JB |
1753 | x = SCM_CDR (x); |
1754 | proc = SCM_CAR (x); | |
6dbd0af5 | 1755 | switch (7 & (int) proc) |
0f2d19dd JB |
1756 | { |
1757 | case 0: | |
1758 | t.lloc = scm_lookupcar (x, env); | |
1759 | break; | |
1760 | case 1: | |
1761 | t.lloc = &SCM_GLOC_VAL (proc); | |
1762 | break; | |
1763 | #ifdef MEMOIZE_LOCALS | |
1764 | case 4: | |
1765 | t.lloc = scm_ilookup (proc, env); | |
1766 | break; | |
1767 | #endif | |
1768 | } | |
1769 | x = SCM_CDR (x); | |
1770 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1771 | #ifdef SICP |
1772 | RETURN (*t.lloc); | |
1773 | #else | |
1774 | RETURN (SCM_UNSPECIFIED); | |
1775 | #endif | |
1776 | ||
1777 | ||
1778 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1779 | x = SCM_CDR (x); | |
1780 | proc = SCM_CAR (x); | |
1781 | x = SCM_CDR (x); | |
1782 | x = evalcar (x, env); | |
6dbd0af5 | 1783 | #ifdef DEBUG_EXTENSIONS |
b7ff98dd | 1784 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x) && SCM_CLOSUREP (x)) |
6dbd0af5 MD |
1785 | scm_set_procedure_property_x (x, scm_i_name, proc); |
1786 | #endif | |
0f2d19dd JB |
1787 | env = SCM_CAR (env); |
1788 | SCM_DEFER_INTS; | |
1789 | SCM_CAR (env) = scm_cons (proc, SCM_CAR (env)); | |
1790 | SCM_CDR (env) = scm_cons (x, SCM_CDR (env)); | |
1791 | SCM_ALLOW_INTS; | |
1792 | RETURN (SCM_UNSPECIFIED); | |
1793 | ||
1794 | ||
1795 | ||
1796 | /* new syntactic forms go here. */ | |
1797 | case (127 & SCM_MAKISYM (0)): | |
1798 | proc = SCM_CAR (x); | |
1799 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1800 | switch SCM_ISYMNUM (proc) | |
1801 | { | |
1802 | #if 0 | |
1803 | case (SCM_ISYMNUM (IM_VREF)): | |
1804 | { | |
1805 | SCM var; | |
1806 | var = SCM_CAR (SCM_CDR (x)); | |
1807 | RETURN (SCM_CDR(var)); | |
1808 | } | |
1809 | case (SCM_ISYMNUM (IM_VSET)): | |
1810 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1811 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1812 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1813 | #endif |
1814 | ||
1815 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1816 | proc = SCM_CDR (x); | |
1817 | proc = EVALCAR (proc, env); | |
1818 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1819 | if (SCM_CLOSUREP (proc)) | |
1820 | { | |
6dbd0af5 | 1821 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1822 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1823 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1824 | #ifdef DEVAL |
1825 | debug.info->a.args = t.arg1; | |
1826 | #endif | |
0f2d19dd JB |
1827 | #ifndef RECKLESS |
1828 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) | |
1829 | goto wrongnumargs; | |
1830 | #endif | |
e2806c10 | 1831 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), t.arg1, SCM_ENV (proc)); |
0f2d19dd JB |
1832 | x = SCM_CODE (proc); |
1833 | goto cdrxbegin; | |
1834 | } | |
1835 | proc = scm_i_apply; | |
1836 | goto evapply; | |
1837 | ||
1838 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1839 | scm_make_cont (&t.arg1); | |
1840 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1841 | { | |
1842 | SCM val; | |
1843 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1844 | RETURN (val); |
0f2d19dd JB |
1845 | } |
1846 | proc = SCM_CDR (x); | |
1847 | proc = evalcar (proc, env); | |
1848 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1849 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1850 | ENTER_APPLY; | |
0f2d19dd JB |
1851 | goto evap1; |
1852 | ||
1853 | default: | |
1854 | goto badfun; | |
1855 | } | |
1856 | ||
1857 | default: | |
1858 | proc = x; | |
1859 | badfun: | |
f5bf2977 | 1860 | /* scm_everr (x, env,...) */ |
01f61221 | 1861 | scm_error (scm_misc_error_key, |
f5bf2977 GH |
1862 | NULL, |
1863 | "Wrong type to apply: %S", | |
1864 | scm_listify (proc, SCM_UNDEFINED), | |
1865 | SCM_BOOL_F); | |
0f2d19dd JB |
1866 | case scm_tc7_vector: |
1867 | case scm_tc7_wvect: | |
1868 | case scm_tc7_bvect: | |
1869 | case scm_tc7_byvect: | |
1870 | case scm_tc7_svect: | |
1871 | case scm_tc7_ivect: | |
1872 | case scm_tc7_uvect: | |
1873 | case scm_tc7_fvect: | |
1874 | case scm_tc7_dvect: | |
1875 | case scm_tc7_cvect: | |
1876 | #ifdef LONGLONGS | |
1877 | case scm_tc7_llvect: | |
1878 | #endif | |
1879 | case scm_tc7_string: | |
1880 | case scm_tc7_mb_string: | |
1881 | case scm_tc7_substring: | |
1882 | case scm_tc7_mb_substring: | |
1883 | case scm_tc7_smob: | |
1884 | case scm_tcs_closures: | |
1885 | case scm_tcs_subrs: | |
1886 | RETURN (x); | |
1887 | ||
1888 | #ifdef MEMOIZE_LOCALS | |
1889 | case (127 & SCM_ILOC00): | |
1890 | proc = *scm_ilookup (SCM_CAR (x), env); | |
1891 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1892 | #ifndef RECKLESS | |
1893 | #ifdef CAUTIOUS | |
1894 | goto checkargs; | |
1895 | #endif | |
1896 | #endif | |
1897 | break; | |
1898 | #endif /* ifdef MEMOIZE_LOCALS */ | |
1899 | ||
1900 | ||
1901 | case scm_tcs_cons_gloc: | |
1902 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
1903 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1904 | #ifndef RECKLESS | |
1905 | #ifdef CAUTIOUS | |
1906 | goto checkargs; | |
1907 | #endif | |
1908 | #endif | |
1909 | break; | |
1910 | ||
1911 | ||
1912 | case scm_tcs_cons_nimcar: | |
1913 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1914 | { | |
1915 | proc = *scm_lookupcar (x, env); | |
1916 | if (SCM_IMP (proc)) | |
1917 | { | |
1918 | unmemocar (x, env); | |
1919 | goto badfun; | |
1920 | } | |
1921 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1922 | { | |
1923 | unmemocar (x, env); | |
1924 | ||
1925 | handle_a_macro: | |
1926 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1927 | switch ((int) (SCM_CAR (proc) >> 16)) | |
1928 | { | |
1929 | case 2: | |
1930 | if (scm_ilength (t.arg1) <= 0) | |
1931 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
1932 | #ifdef DEVAL |
1933 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
1934 | { | |
1935 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ | |
1936 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
1937 | /* Prevent memoizing result of define macro */ | |
1938 | { | |
1939 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1940 | scm_set_source_properties_x (debug.info->e.exp, | |
1941 | scm_source_properties (x)); | |
1942 | } | |
1943 | #endif | |
1944 | SCM_DEFER_INTS; | |
1945 | SCM_CAR (x) = SCM_CAR (t.arg1); | |
1946 | SCM_CDR (x) = SCM_CDR (t.arg1); | |
1947 | SCM_ALLOW_INTS; | |
1948 | goto dispatch; | |
1949 | } | |
1950 | /* Prevent memoizing of debug info expression. */ | |
1951 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1952 | scm_set_source_properties_x (debug.info->e.exp, | |
1953 | scm_source_properties (x)); | |
1954 | #endif | |
0f2d19dd JB |
1955 | SCM_DEFER_INTS; |
1956 | SCM_CAR (x) = SCM_CAR (t.arg1); | |
1957 | SCM_CDR (x) = SCM_CDR (t.arg1); | |
1958 | SCM_ALLOW_INTS; | |
6dbd0af5 | 1959 | goto loopnoap; |
0f2d19dd JB |
1960 | case 1: |
1961 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 1962 | goto loopnoap; |
0f2d19dd JB |
1963 | case 0: |
1964 | RETURN (t.arg1); | |
1965 | } | |
1966 | } | |
1967 | } | |
1968 | else | |
1969 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
1970 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1971 | #ifndef RECKLESS | |
1972 | #ifdef CAUTIOUS | |
1973 | checkargs: | |
1974 | #endif | |
1975 | if (SCM_CLOSUREP (proc)) | |
1976 | { | |
1977 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
1978 | t.arg1 = SCM_CDR (x); | |
1979 | while (SCM_NIMP (arg2)) | |
1980 | { | |
1981 | if (SCM_NCONSP (arg2)) | |
1982 | goto evapply; | |
1983 | if (SCM_IMP (t.arg1)) | |
1984 | goto umwrongnumargs; | |
1985 | arg2 = SCM_CDR (arg2); | |
1986 | t.arg1 = SCM_CDR (t.arg1); | |
1987 | } | |
1988 | if (SCM_NNULLP (t.arg1)) | |
1989 | goto umwrongnumargs; | |
1990 | } | |
1991 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1992 | goto handle_a_macro; | |
1993 | #endif | |
1994 | } | |
1995 | ||
1996 | ||
6dbd0af5 MD |
1997 | evapply: |
1998 | PREP_APPLY (proc, SCM_EOL); | |
1999 | if (SCM_NULLP (SCM_CDR (x))) { | |
2000 | ENTER_APPLY; | |
0f2d19dd JB |
2001 | switch (SCM_TYP7 (proc)) |
2002 | { /* no arguments given */ | |
2003 | case scm_tc7_subr_0: | |
2004 | RETURN (SCM_SUBRF (proc) ()); | |
2005 | case scm_tc7_subr_1o: | |
2006 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
2007 | case scm_tc7_lsubr: | |
2008 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
2009 | case scm_tc7_rpsubr: | |
2010 | RETURN (SCM_BOOL_T); | |
2011 | case scm_tc7_asubr: | |
2012 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 2013 | #ifdef CCLO |
0f2d19dd JB |
2014 | case scm_tc7_cclo: |
2015 | t.arg1 = proc; | |
2016 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2017 | #ifdef DEVAL |
2018 | debug.info->a.proc = proc; | |
2019 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2020 | #endif | |
0f2d19dd | 2021 | goto evap1; |
6dbd0af5 | 2022 | #endif |
0f2d19dd JB |
2023 | case scm_tcs_closures: |
2024 | x = SCM_CODE (proc); | |
e2806c10 | 2025 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd JB |
2026 | goto cdrxbegin; |
2027 | case scm_tc7_contin: | |
2028 | case scm_tc7_subr_1: | |
2029 | case scm_tc7_subr_2: | |
2030 | case scm_tc7_subr_2o: | |
2031 | case scm_tc7_cxr: | |
2032 | case scm_tc7_subr_3: | |
2033 | case scm_tc7_lsubr_2: | |
2034 | umwrongnumargs: | |
2035 | unmemocar (x, env); | |
2036 | wrongnumargs: | |
f5bf2977 GH |
2037 | /* scm_everr (x, env,...) */ |
2038 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
2039 | default: |
2040 | /* handle macros here */ | |
2041 | goto badfun; | |
2042 | } | |
6dbd0af5 | 2043 | } |
0f2d19dd JB |
2044 | |
2045 | /* must handle macros by here */ | |
2046 | x = SCM_CDR (x); | |
2047 | #ifdef CAUTIOUS | |
2048 | if (SCM_IMP (x)) | |
2049 | goto wrongnumargs; | |
2050 | #endif | |
2051 | t.arg1 = EVALCAR (x, env); | |
6dbd0af5 MD |
2052 | #ifdef DEVAL |
2053 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
2054 | #endif | |
0f2d19dd JB |
2055 | x = SCM_CDR (x); |
2056 | if (SCM_NULLP (x)) | |
2057 | { | |
6dbd0af5 | 2058 | ENTER_APPLY; |
0f2d19dd JB |
2059 | evap1: |
2060 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 2061 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
2062 | case scm_tc7_subr_2o: |
2063 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2064 | case scm_tc7_subr_1: | |
2065 | case scm_tc7_subr_1o: | |
2066 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
2067 | case scm_tc7_cxr: | |
2068 | #ifdef SCM_FLOATS | |
2069 | if (SCM_SUBRF (proc)) | |
2070 | { | |
2071 | if (SCM_INUMP (t.arg1)) | |
2072 | { | |
2073 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
2074 | 0.0)); | |
2075 | } | |
2076 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
2077 | if (SCM_REALP (t.arg1)) | |
2078 | { | |
2079 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
2080 | } | |
2081 | #ifdef SCM_BIGDIG | |
2082 | if (SCM_BIGP (t.arg1)) | |
2083 | { | |
2084 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
2085 | } | |
2086 | #endif | |
2087 | floerr: | |
2088 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2089 | } | |
2090 | #endif | |
2091 | proc = (SCM) SCM_SNAME (proc); | |
2092 | { | |
2093 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2094 | while ('c' != *--chrs) | |
2095 | { | |
2096 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
2097 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2098 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
2099 | } | |
2100 | RETURN (t.arg1); | |
2101 | } | |
2102 | case scm_tc7_rpsubr: | |
2103 | RETURN (SCM_BOOL_T); | |
2104 | case scm_tc7_asubr: | |
2105 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
2106 | case scm_tc7_lsubr: | |
2107 | #ifdef DEVAL | |
6dbd0af5 | 2108 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
2109 | #else |
2110 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
2111 | #endif | |
6dbd0af5 | 2112 | #ifdef CCLO |
0f2d19dd JB |
2113 | case scm_tc7_cclo: |
2114 | arg2 = t.arg1; | |
2115 | t.arg1 = proc; | |
2116 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2117 | #ifdef DEVAL |
2118 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2119 | debug.info->a.proc = proc; | |
2120 | #endif | |
0f2d19dd | 2121 | goto evap2; |
6dbd0af5 | 2122 | #endif |
0f2d19dd JB |
2123 | case scm_tcs_closures: |
2124 | x = SCM_CODE (proc); | |
2125 | #ifdef DEVAL | |
e2806c10 | 2126 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2127 | #else |
e2806c10 | 2128 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2129 | #endif |
2130 | goto cdrxbegin; | |
2131 | case scm_tc7_contin: | |
2132 | scm_call_continuation (proc, t.arg1); | |
2133 | case scm_tc7_subr_2: | |
2134 | case scm_tc7_subr_0: | |
2135 | case scm_tc7_subr_3: | |
2136 | case scm_tc7_lsubr_2: | |
2137 | goto wrongnumargs; | |
2138 | default: | |
2139 | goto badfun; | |
2140 | } | |
2141 | } | |
2142 | #ifdef CAUTIOUS | |
2143 | if (SCM_IMP (x)) | |
2144 | goto wrongnumargs; | |
2145 | #endif | |
2146 | { /* have two or more arguments */ | |
2147 | arg2 = EVALCAR (x, env); | |
6dbd0af5 MD |
2148 | #ifdef DEVAL |
2149 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2150 | #endif | |
0f2d19dd JB |
2151 | x = SCM_CDR (x); |
2152 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2153 | ENTER_APPLY; |
0f2d19dd JB |
2154 | #ifdef CCLO |
2155 | evap2: | |
2156 | #endif | |
6dbd0af5 MD |
2157 | switch (SCM_TYP7 (proc)) |
2158 | { /* have two arguments */ | |
2159 | case scm_tc7_subr_2: | |
2160 | case scm_tc7_subr_2o: | |
2161 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2162 | case scm_tc7_lsubr: | |
0f2d19dd | 2163 | #ifdef DEVAL |
6dbd0af5 MD |
2164 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2165 | #else | |
2166 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2167 | #endif |
6dbd0af5 MD |
2168 | case scm_tc7_lsubr_2: |
2169 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2170 | case scm_tc7_rpsubr: | |
2171 | case scm_tc7_asubr: | |
2172 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2173 | #ifdef CCLO | |
2174 | cclon: | |
2175 | case scm_tc7_cclo: | |
0f2d19dd | 2176 | #ifdef DEVAL |
6dbd0af5 MD |
2177 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2178 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2179 | #else |
6dbd0af5 MD |
2180 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2181 | scm_cons2 (t.arg1, arg2, | |
2182 | scm_cons (scm_eval_args (x, env), SCM_EOL)))); | |
0f2d19dd | 2183 | #endif |
6dbd0af5 MD |
2184 | /* case scm_tc7_cclo: |
2185 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2186 | arg2 = t.arg1; | |
2187 | t.arg1 = proc; | |
2188 | proc = SCM_CCLO_SUBR(proc); | |
2189 | goto evap3; */ | |
2190 | #endif | |
2191 | case scm_tc7_subr_0: | |
2192 | case scm_tc7_cxr: | |
2193 | case scm_tc7_subr_1o: | |
2194 | case scm_tc7_subr_1: | |
2195 | case scm_tc7_subr_3: | |
2196 | case scm_tc7_contin: | |
2197 | goto wrongnumargs; | |
2198 | default: | |
2199 | goto badfun; | |
2200 | case scm_tcs_closures: | |
0f2d19dd | 2201 | #ifdef DEVAL |
e2806c10 | 2202 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2203 | #else |
e2806c10 | 2204 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd | 2205 | #endif |
6dbd0af5 MD |
2206 | x = SCM_CODE (proc); |
2207 | goto cdrxbegin; | |
2208 | } | |
0f2d19dd JB |
2209 | } |
2210 | #ifdef DEVAL | |
6dbd0af5 MD |
2211 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
2212 | scm_deval_args (x, env, &SCM_CDR (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2213 | #endif |
6dbd0af5 MD |
2214 | ENTER_APPLY; |
2215 | switch (SCM_TYP7 (proc)) | |
2216 | { /* have 3 or more arguments */ | |
0f2d19dd | 2217 | #ifdef DEVAL |
6dbd0af5 MD |
2218 | case scm_tc7_subr_3: |
2219 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2220 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CAR (SCM_CDR (SCM_CDR (debug.info->a.args))))); | |
2221 | case scm_tc7_asubr: | |
2222 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2223 | while SCM_NIMP(x) { | |
2224 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2225 | x = SCM_CDR(x); | |
2226 | } | |
2227 | RETURN (t.arg1) */ | |
2228 | case scm_tc7_rpsubr: | |
2229 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, SCM_CDR (SCM_CDR (debug.info->a.args)), SCM_EOL))) | |
2230 | case scm_tc7_lsubr_2: | |
2231 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
2232 | case scm_tc7_lsubr: | |
2233 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2234 | #ifdef CCLO |
6dbd0af5 MD |
2235 | case scm_tc7_cclo: |
2236 | goto cclon; | |
0f2d19dd | 2237 | #endif |
6dbd0af5 | 2238 | case scm_tcs_closures: |
b7ff98dd | 2239 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2240 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2241 | debug.info->a.args, |
2242 | SCM_ENV (proc)); | |
2243 | x = SCM_CODE (proc); | |
2244 | goto cdrxbegin; | |
2245 | #else /* DEVAL */ | |
2246 | case scm_tc7_subr_3: | |
2247 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2248 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2249 | case scm_tc7_asubr: | |
2250 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2251 | while SCM_NIMP(x) { | |
2252 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2253 | x = SCM_CDR(x); | |
2254 | } | |
2255 | RETURN (t.arg1) */ | |
2256 | case scm_tc7_rpsubr: | |
2257 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, scm_eval_args (x, env), SCM_EOL))); | |
2258 | case scm_tc7_lsubr_2: | |
2259 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env))); | |
2260 | case scm_tc7_lsubr: | |
2261 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)))); | |
0f2d19dd | 2262 | #ifdef CCLO |
6dbd0af5 MD |
2263 | case scm_tc7_cclo: |
2264 | goto cclon; | |
0f2d19dd | 2265 | #endif |
6dbd0af5 MD |
2266 | case scm_tcs_closures: |
2267 | #ifdef DEVAL | |
b7ff98dd | 2268 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2269 | #endif |
e2806c10 | 2270 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2271 | scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)), |
2272 | SCM_ENV (proc)); | |
2273 | x = SCM_CODE (proc); | |
2274 | goto cdrxbegin; | |
0f2d19dd | 2275 | #endif /* DEVAL */ |
6dbd0af5 MD |
2276 | case scm_tc7_subr_2: |
2277 | case scm_tc7_subr_1o: | |
2278 | case scm_tc7_subr_2o: | |
2279 | case scm_tc7_subr_0: | |
2280 | case scm_tc7_cxr: | |
2281 | case scm_tc7_subr_1: | |
2282 | case scm_tc7_contin: | |
2283 | goto wrongnumargs; | |
2284 | default: | |
2285 | goto badfun; | |
2286 | } | |
0f2d19dd JB |
2287 | } |
2288 | #ifdef DEVAL | |
6dbd0af5 MD |
2289 | exit: |
2290 | if (CHECK_EXIT) | |
b7ff98dd | 2291 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2292 | { |
b7ff98dd MD |
2293 | SCM_EXIT_FRAME_P = 0; |
2294 | SCM_RESET_DEBUG_MODE; | |
2295 | SCM_CLEAR_TRACED_FRAME (debug); | |
2296 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
2297 | t.arg1 = scm_make_debugobj ((scm_debug_frame *) &debug); |
2298 | else | |
2299 | { | |
2300 | scm_make_cont (&t.arg1); | |
2301 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
2302 | { | |
2303 | proc = SCM_THROW_VALUE (t.arg1); | |
2304 | goto ret; | |
2305 | } | |
2306 | } | |
2307 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2308 | } | |
2309 | ret: | |
1646d37b | 2310 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2311 | return proc; |
2312 | #endif | |
2313 | } | |
2314 | ||
6dbd0af5 MD |
2315 | |
2316 | /* SECTION: This code is compiled once. | |
2317 | */ | |
2318 | ||
0f2d19dd JB |
2319 | #ifndef DEVAL |
2320 | ||
2321 | SCM_PROC(s_procedure_documentation, "procedure-documentation", 1, 0, 0, scm_procedure_documentation); | |
2322 | #ifdef __STDC__ | |
2323 | SCM | |
2324 | scm_procedure_documentation (SCM proc) | |
2325 | #else | |
2326 | SCM | |
2327 | scm_procedure_documentation (proc) | |
2328 | SCM proc; | |
2329 | #endif | |
2330 | { | |
2331 | SCM code; | |
2332 | SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc) && SCM_NIMP (proc) && SCM_TYP7 (proc) != scm_tc7_contin, | |
2333 | proc, SCM_ARG1, s_procedure_documentation); | |
2334 | switch (SCM_TYP7 (proc)) | |
2335 | { | |
2336 | case scm_tcs_closures: | |
2337 | code = SCM_CDR (SCM_CODE (proc)); | |
2338 | if (SCM_IMP (SCM_CDR (code))) | |
2339 | return SCM_BOOL_F; | |
2340 | code = SCM_CAR (code); | |
2341 | if (SCM_IMP (code)) | |
2342 | return SCM_BOOL_F; | |
2343 | if (SCM_STRINGP (code)) | |
2344 | return code; | |
2345 | default: | |
2346 | return SCM_BOOL_F; | |
2347 | /* | |
2348 | case scm_tcs_subrs: | |
2349 | #ifdef CCLO | |
2350 | case scm_tc7_cclo: | |
2351 | #endif | |
2352 | */ | |
2353 | } | |
2354 | } | |
2355 | ||
2356 | /* This code is for scm_apply. it is destructive on multiple args. | |
2357 | * This will only screw you if you do (scm_apply scm_apply '( ... )) | |
2358 | */ | |
2359 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); | |
2360 | #ifdef __STDC__ | |
2361 | SCM | |
2362 | scm_nconc2last (SCM lst) | |
2363 | #else | |
2364 | SCM | |
2365 | scm_nconc2last (lst) | |
2366 | SCM lst; | |
2367 | #endif | |
2368 | { | |
2369 | SCM *lloc; | |
2370 | if (SCM_EOL == lst) | |
2371 | return lst; | |
1e798023 | 2372 | SCM_ASSERT (SCM_NIMP (lst) && SCM_CONSP (lst), lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2373 | lloc = &lst; |
2374 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
2375 | { | |
2376 | lloc = &SCM_CDR (*lloc); | |
1e798023 | 2377 | SCM_ASSERT (SCM_NIMP (*lloc) && SCM_CONSP (*lloc), lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2378 | } |
2379 | *lloc = SCM_CAR (*lloc); | |
2380 | return lst; | |
2381 | } | |
2382 | ||
2383 | #endif /* !DEVAL */ | |
2384 | ||
6dbd0af5 MD |
2385 | |
2386 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2387 | * It is compiled twice. | |
2388 | */ | |
2389 | ||
0f2d19dd JB |
2390 | #if 0 |
2391 | #ifdef __STDC__ | |
2392 | SCM | |
2393 | scm_apply (SCM proc, SCM arg1, SCM args) | |
2394 | #else | |
2395 | SCM | |
2396 | scm_apply (proc, arg1, args) | |
2397 | SCM proc; | |
2398 | SCM arg1; | |
2399 | SCM args; | |
2400 | #endif | |
2401 | {} | |
2402 | #endif | |
2403 | ||
2404 | #if 0 | |
2405 | #ifdef __STDC__ | |
2406 | SCM | |
2407 | scm_dapply (SCM proc, SCM arg1, SCM args) | |
2408 | #else | |
2409 | SCM | |
2410 | scm_dapply (proc, arg1, args) | |
2411 | SCM proc; | |
2412 | SCM arg1; | |
2413 | SCM args; | |
2414 | #endif | |
2415 | {} | |
2416 | #endif | |
2417 | ||
0f2d19dd JB |
2418 | #ifdef __STDC__ |
2419 | SCM | |
2420 | SCM_APPLY (SCM proc, SCM arg1, SCM args) | |
2421 | #else | |
2422 | SCM | |
2423 | SCM_APPLY (proc, arg1, args) | |
2424 | SCM proc; | |
2425 | SCM arg1; | |
2426 | SCM args; | |
2427 | #endif | |
2428 | { | |
2429 | #ifdef DEBUG_EXTENSIONS | |
2430 | #ifdef DEVAL | |
6dbd0af5 | 2431 | scm_debug_frame debug; |
1646d37b | 2432 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2433 | debug.status = SCM_APPLYFRAME; |
6dbd0af5 MD |
2434 | debug.vect[0].a.proc = proc; |
2435 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2436 | scm_last_debug_frame = &debug; |
0f2d19dd | 2437 | #else |
b7ff98dd | 2438 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2439 | return scm_dapply (proc, arg1, args); |
2440 | #endif | |
2441 | #endif | |
2442 | ||
2443 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
2444 | if (SCM_NULLP (args)) | |
2445 | { | |
2446 | if (SCM_NULLP (arg1)) | |
2447 | arg1 = SCM_UNDEFINED; | |
2448 | else | |
2449 | { | |
2450 | args = SCM_CDR (arg1); | |
2451 | arg1 = SCM_CAR (arg1); | |
2452 | } | |
2453 | } | |
2454 | else | |
2455 | { | |
2456 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ | |
2457 | args = scm_nconc2last (args); | |
2458 | } | |
0f2d19dd | 2459 | #ifdef DEVAL |
6dbd0af5 | 2460 | debug.vect[0].a.args = scm_cons (arg1, args); |
b7ff98dd | 2461 | if (SCM_ENTER_FRAME_P) |
6dbd0af5 MD |
2462 | { |
2463 | SCM tmp; | |
b7ff98dd MD |
2464 | SCM_ENTER_FRAME_P = 0; |
2465 | SCM_RESET_DEBUG_MODE; | |
2466 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
2467 | tmp = scm_make_debugobj ((scm_debug_frame *) &debug); |
2468 | else | |
2469 | { | |
2470 | scm_make_cont (&tmp); | |
2471 | if (setjmp (SCM_JMPBUF (tmp))) | |
2472 | goto entap; | |
2473 | } | |
2474 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2475 | } | |
2476 | entap: | |
2477 | ENTER_APPLY; | |
2478 | #endif | |
2479 | #ifdef CCLO | |
2480 | tail: | |
0f2d19dd JB |
2481 | #endif |
2482 | switch (SCM_TYP7 (proc)) | |
2483 | { | |
2484 | case scm_tc7_subr_2o: | |
2485 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2486 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2487 | case scm_tc7_subr_2: | |
2488 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (args)), wrongnumargs); | |
2489 | args = SCM_CAR (args); | |
2490 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2491 | case scm_tc7_subr_0: | |
2492 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2493 | RETURN (SCM_SUBRF (proc) ()) | |
2494 | case scm_tc7_subr_1: | |
2495 | case scm_tc7_subr_1o: | |
2496 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2497 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2498 | case scm_tc7_cxr: | |
2499 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2500 | #ifdef SCM_FLOATS | |
2501 | if (SCM_SUBRF (proc)) | |
2502 | { | |
6dbd0af5 MD |
2503 | if (SCM_INUMP (arg1)) |
2504 | { | |
2505 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2506 | } | |
0f2d19dd | 2507 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2508 | if (SCM_REALP (arg1)) |
2509 | { | |
2510 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2511 | } | |
0f2d19dd JB |
2512 | #ifdef SCM_BIGDIG |
2513 | if SCM_BIGP | |
2514 | (arg1) | |
2515 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) | |
2516 | #endif | |
2517 | floerr: | |
2518 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2519 | } | |
2520 | #endif | |
2521 | proc = (SCM) SCM_SNAME (proc); | |
2522 | { | |
2523 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2524 | while ('c' != *--chrs) | |
2525 | { | |
2526 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2527 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2528 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2529 | } | |
2530 | RETURN (arg1) | |
2531 | } | |
2532 | case scm_tc7_subr_3: | |
2533 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2534 | case scm_tc7_lsubr: | |
2535 | #ifdef DEVAL | |
6dbd0af5 | 2536 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2537 | #else |
2538 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2539 | #endif | |
2540 | case scm_tc7_lsubr_2: | |
2541 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2542 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2543 | case scm_tc7_asubr: | |
2544 | if (SCM_NULLP (args)) | |
2545 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2546 | while (SCM_NIMP (args)) | |
2547 | { | |
2548 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2549 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2550 | args = SCM_CDR (args); | |
2551 | } | |
2552 | RETURN (arg1); | |
2553 | case scm_tc7_rpsubr: | |
2554 | if (SCM_NULLP (args)) | |
2555 | RETURN (SCM_BOOL_T); | |
2556 | while (SCM_NIMP (args)) | |
2557 | { | |
2558 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2559 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2560 | RETURN (SCM_BOOL_F); | |
2561 | arg1 = SCM_CAR (args); | |
2562 | args = SCM_CDR (args); | |
2563 | } | |
2564 | RETURN (SCM_BOOL_T); | |
2565 | case scm_tcs_closures: | |
2566 | #ifdef DEVAL | |
6dbd0af5 | 2567 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2568 | #else |
2569 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2570 | #endif | |
2571 | #ifndef RECKLESS | |
2572 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) | |
2573 | goto wrongnumargs; | |
2574 | #endif | |
e2806c10 | 2575 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), arg1, SCM_ENV (proc)); |
0f2d19dd JB |
2576 | proc = SCM_CODE (proc); |
2577 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
2578 | arg1 = EVALCAR (proc, args); | |
2579 | RETURN (arg1); | |
2580 | case scm_tc7_contin: | |
2581 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2582 | scm_call_continuation (proc, arg1); | |
2583 | #ifdef CCLO | |
2584 | case scm_tc7_cclo: | |
2585 | #ifdef DEVAL | |
6dbd0af5 MD |
2586 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
2587 | arg1 = proc; | |
2588 | proc = SCM_CCLO_SUBR (proc); | |
2589 | debug.vect[0].a.proc = proc; | |
2590 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
2591 | #else |
2592 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
2593 | arg1 = proc; |
2594 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 2595 | #endif |
0f2d19dd JB |
2596 | goto tail; |
2597 | #endif | |
2598 | wrongnumargs: | |
f5bf2977 | 2599 | scm_wrong_num_args (proc); |
0f2d19dd JB |
2600 | default: |
2601 | badproc: | |
2602 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
2603 | RETURN (arg1); | |
2604 | } | |
2605 | #ifdef DEVAL | |
6dbd0af5 MD |
2606 | exit: |
2607 | if (CHECK_EXIT) | |
b7ff98dd | 2608 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2609 | { |
b7ff98dd MD |
2610 | SCM_EXIT_FRAME_P = 0; |
2611 | SCM_RESET_DEBUG_MODE; | |
2612 | SCM_CLEAR_TRACED_FRAME (debug); | |
2613 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
2614 | arg1 = scm_make_debugobj ((scm_debug_frame *) &debug); |
2615 | else | |
2616 | { | |
2617 | scm_make_cont (&arg1); | |
2618 | if (setjmp (SCM_JMPBUF (arg1))) | |
2619 | { | |
2620 | proc = SCM_THROW_VALUE (arg1); | |
2621 | goto ret; | |
2622 | } | |
2623 | } | |
2624 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
2625 | } | |
2626 | ret: | |
1646d37b | 2627 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2628 | return proc; |
2629 | #endif | |
2630 | } | |
2631 | ||
6dbd0af5 MD |
2632 | |
2633 | /* SECTION: The rest of this file is only read once. | |
2634 | */ | |
2635 | ||
0f2d19dd JB |
2636 | #ifndef DEVAL |
2637 | ||
2638 | SCM_PROC(s_map, "map", 2, 0, 1, scm_map); | |
2639 | #ifdef __STDC__ | |
2640 | SCM | |
2641 | scm_map (SCM proc, SCM arg1, SCM args) | |
2642 | #else | |
2643 | SCM | |
2644 | scm_map (proc, arg1, args) | |
2645 | SCM proc; | |
2646 | SCM arg1; | |
2647 | SCM args; | |
2648 | #endif | |
2649 | { | |
2650 | long i; | |
2651 | SCM res = SCM_EOL; | |
2652 | SCM *pres = &res; | |
2653 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2654 | ||
2655 | if (SCM_NULLP (arg1)) | |
2656 | return res; | |
2657 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map); | |
2658 | if (SCM_NULLP (args)) | |
2659 | { | |
2660 | while (SCM_NIMP (arg1)) | |
2661 | { | |
2662 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
2663 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
2664 | pres = &SCM_CDR (*pres); | |
2665 | arg1 = SCM_CDR (arg1); | |
2666 | } | |
2667 | return res; | |
2668 | } | |
2669 | args = scm_vector (scm_cons (arg1, args)); | |
2670 | ve = SCM_VELTS (args); | |
2671 | #ifndef RECKLESS | |
2672 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2673 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map); | |
2674 | #endif | |
2675 | while (1) | |
2676 | { | |
2677 | arg1 = SCM_EOL; | |
2678 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2679 | { | |
2680 | if SCM_IMP | |
2681 | (ve[i]) return res; | |
2682 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2683 | ve[i] = SCM_CDR (ve[i]); | |
2684 | } | |
2685 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
2686 | pres = &SCM_CDR (*pres); | |
2687 | } | |
2688 | } | |
2689 | ||
2690 | ||
2691 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
2692 | #ifdef __STDC__ | |
2693 | SCM | |
2694 | scm_for_each (SCM proc, SCM arg1, SCM args) | |
2695 | #else | |
2696 | SCM | |
2697 | scm_for_each (proc, arg1, args) | |
2698 | SCM proc; | |
2699 | SCM arg1; | |
2700 | SCM args; | |
2701 | #endif | |
2702 | { | |
2703 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2704 | long i; | |
2705 | if SCM_NULLP (arg1) | |
2706 | return SCM_UNSPECIFIED; | |
2707 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each); | |
2708 | if SCM_NULLP (args) | |
2709 | { | |
2710 | while SCM_NIMP (arg1) | |
2711 | { | |
2712 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
2713 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
2714 | arg1 = SCM_CDR (arg1); | |
2715 | } | |
2716 | return SCM_UNSPECIFIED; | |
2717 | } | |
2718 | args = scm_vector (scm_cons (arg1, args)); | |
2719 | ve = SCM_VELTS (args); | |
2720 | #ifndef RECKLESS | |
2721 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2722 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each); | |
2723 | #endif | |
2724 | while (1) | |
2725 | { | |
2726 | arg1 = SCM_EOL; | |
2727 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2728 | { | |
2729 | if SCM_IMP | |
2730 | (ve[i]) return SCM_UNSPECIFIED; | |
2731 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2732 | ve[i] = SCM_CDR (ve[i]); | |
2733 | } | |
2734 | scm_apply (proc, arg1, SCM_EOL); | |
2735 | } | |
2736 | } | |
2737 | ||
2738 | ||
2739 | #ifdef __STDC__ | |
2740 | SCM | |
2741 | scm_closure (SCM code, SCM env) | |
2742 | #else | |
2743 | SCM | |
2744 | scm_closure (code, env) | |
2745 | SCM code; | |
2746 | SCM env; | |
2747 | #endif | |
2748 | { | |
2749 | register SCM z; | |
2750 | SCM_NEWCELL (z); | |
2751 | SCM_SETCODE (z, code); | |
2752 | SCM_ENV (z) = env; | |
2753 | return z; | |
2754 | } | |
2755 | ||
2756 | ||
2757 | long scm_tc16_promise; | |
2758 | #ifdef __STDC__ | |
2759 | SCM | |
2760 | scm_makprom (SCM code) | |
2761 | #else | |
2762 | SCM | |
2763 | scm_makprom (code) | |
2764 | SCM code; | |
2765 | #endif | |
2766 | { | |
2767 | register SCM z; | |
2768 | SCM_NEWCELL (z); | |
2769 | SCM_CDR (z) = code; | |
2770 | SCM_CAR (z) = scm_tc16_promise; | |
2771 | return z; | |
2772 | } | |
2773 | ||
2774 | ||
2775 | #ifdef __STDC__ | |
2776 | static int | |
19402679 | 2777 | prinprom (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd JB |
2778 | #else |
2779 | static int | |
19402679 | 2780 | prinprom (exp, port, pstate) |
0f2d19dd JB |
2781 | SCM exp; |
2782 | SCM port; | |
19402679 | 2783 | scm_print_state *pstate; |
0f2d19dd JB |
2784 | #endif |
2785 | { | |
19402679 | 2786 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd | 2787 | scm_gen_puts (scm_regular_string, "#<promise ", port); |
19402679 MD |
2788 | SCM_SET_WRITINGP (pstate, 1); |
2789 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2790 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2791 | scm_gen_putc ('>', port); |
2792 | return !0; | |
2793 | } | |
2794 | ||
2795 | ||
2796 | SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro); | |
2797 | #ifdef __STDC__ | |
2798 | SCM | |
2799 | scm_makacro (SCM code) | |
2800 | #else | |
2801 | SCM | |
2802 | scm_makacro (code) | |
2803 | SCM code; | |
2804 | #endif | |
2805 | { | |
2806 | register SCM z; | |
2807 | SCM_NEWCELL (z); | |
2808 | SCM_CDR (z) = code; | |
2809 | SCM_CAR (z) = scm_tc16_macro; | |
2810 | return z; | |
2811 | } | |
2812 | ||
2813 | ||
2814 | SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro); | |
2815 | #ifdef __STDC__ | |
2816 | SCM | |
2817 | scm_makmacro (SCM code) | |
2818 | #else | |
2819 | SCM | |
2820 | scm_makmacro (code) | |
2821 | SCM code; | |
2822 | #endif | |
2823 | { | |
2824 | register SCM z; | |
2825 | SCM_NEWCELL (z); | |
2826 | SCM_CDR (z) = code; | |
2827 | SCM_CAR (z) = scm_tc16_macro | (1L << 16); | |
2828 | return z; | |
2829 | } | |
2830 | ||
2831 | ||
2832 | SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro); | |
2833 | #ifdef __STDC__ | |
2834 | SCM | |
2835 | scm_makmmacro (SCM code) | |
2836 | #else | |
2837 | SCM | |
2838 | scm_makmmacro (code) | |
2839 | SCM code; | |
2840 | #endif | |
2841 | { | |
2842 | register SCM z; | |
2843 | SCM_NEWCELL (z); | |
2844 | SCM_CDR (z) = code; | |
2845 | SCM_CAR (z) = scm_tc16_macro | (2L << 16); | |
2846 | return z; | |
2847 | } | |
2848 | ||
2849 | ||
2850 | #ifdef __STDC__ | |
2851 | static int | |
19402679 | 2852 | prinmacro (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd JB |
2853 | #else |
2854 | static int | |
19402679 | 2855 | prinmacro (exp, port, pstate) |
0f2d19dd JB |
2856 | SCM exp; |
2857 | SCM port; | |
19402679 | 2858 | scm_print_state *pstate; |
0f2d19dd JB |
2859 | #endif |
2860 | { | |
19402679 | 2861 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd JB |
2862 | if (SCM_CAR (exp) & (3L << 16)) |
2863 | scm_gen_puts (scm_regular_string, "#<macro", port); | |
2864 | else | |
2865 | scm_gen_puts (scm_regular_string, "#<syntax", port); | |
2866 | if (SCM_CAR (exp) & (2L << 16)) | |
2867 | scm_gen_putc ('!', port); | |
2868 | scm_gen_putc (' ', port); | |
19402679 MD |
2869 | SCM_SET_WRITINGP (pstate, 1); |
2870 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2871 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2872 | scm_gen_putc ('>', port); |
2873 | return !0; | |
2874 | } | |
2875 | ||
2876 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); | |
2877 | #ifdef __STDC__ | |
2878 | SCM | |
2879 | scm_force (SCM x) | |
2880 | #else | |
2881 | SCM | |
2882 | scm_force (x) | |
2883 | SCM x; | |
2884 | #endif | |
2885 | { | |
2886 | SCM_ASSERT ((SCM_TYP16 (x) == scm_tc16_promise), x, SCM_ARG1, s_force); | |
2887 | if (!((1L << 16) & SCM_CAR (x))) | |
2888 | { | |
2889 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
2890 | if (!((1L << 16) & SCM_CAR (x))) | |
2891 | { | |
2892 | SCM_DEFER_INTS; | |
2893 | SCM_CDR (x) = ans; | |
2894 | SCM_CAR (x) |= (1L << 16); | |
2895 | SCM_ALLOW_INTS; | |
2896 | } | |
2897 | } | |
2898 | return SCM_CDR (x); | |
2899 | } | |
2900 | ||
2901 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
2902 | #ifdef __STDC__ | |
2903 | SCM | |
2904 | scm_promise_p (SCM x) | |
2905 | #else | |
2906 | SCM | |
2907 | scm_promise_p (x) | |
2908 | SCM x; | |
2909 | #endif | |
2910 | { | |
2911 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
2912 | ? SCM_BOOL_T | |
2913 | : SCM_BOOL_F); | |
2914 | } | |
2915 | ||
2916 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
2917 | #ifdef __STDC__ | |
2918 | SCM | |
2919 | scm_copy_tree (SCM obj) | |
2920 | #else | |
2921 | SCM | |
2922 | scm_copy_tree (obj) | |
2923 | SCM obj; | |
2924 | #endif | |
2925 | { | |
2926 | SCM ans, tl; | |
2927 | if SCM_IMP | |
2928 | (obj) return obj; | |
2929 | if (SCM_VECTORP (obj)) | |
2930 | { | |
2931 | scm_sizet i = SCM_LENGTH (obj); | |
2932 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED, SCM_UNDEFINED); | |
2933 | while (i--) | |
2934 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
2935 | return ans; | |
2936 | } | |
2937 | if SCM_NCONSP (obj) | |
2938 | return obj; | |
2939 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
2940 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
2941 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) | |
2942 | tl = (SCM_CDR (tl) = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED)); | |
2943 | SCM_CDR (tl) = obj; | |
2944 | return ans; | |
2945 | } | |
2946 | ||
2947 | #ifdef __STDC__ | |
2948 | SCM | |
2949 | scm_eval_3 (SCM obj, int copyp, SCM env) | |
2950 | #else | |
2951 | SCM | |
2952 | scm_eval_3 (obj, copyp, env) | |
2953 | SCM obj; | |
2954 | int copyp; | |
2955 | SCM env; | |
2956 | #endif | |
2957 | { | |
2958 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
2959 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
2960 | else if (copyp) | |
2961 | obj = scm_copy_tree (obj); | |
6dbd0af5 | 2962 | return XEVAL (obj, env); |
0f2d19dd JB |
2963 | } |
2964 | ||
2965 | #ifdef __STDC__ | |
2966 | SCM | |
2967 | scm_top_level_env (SCM thunk) | |
2968 | #else | |
2969 | SCM | |
2970 | scm_top_level_env (thunk) | |
2971 | SCM thunk; | |
2972 | #endif | |
2973 | { | |
2974 | if (SCM_IMP(thunk)) | |
2975 | return SCM_EOL; | |
2976 | else | |
2977 | return scm_cons(thunk, (SCM)SCM_EOL); | |
2978 | } | |
2979 | ||
2980 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); | |
2981 | #ifdef __STDC__ | |
2982 | SCM | |
2983 | scm_eval2 (SCM obj, SCM env_thunk) | |
2984 | #else | |
2985 | SCM | |
2986 | scm_eval2 (obj, env_thunk) | |
2987 | SCM obj; | |
2988 | SCM env_thunk; | |
2989 | #endif | |
2990 | { | |
2991 | return scm_eval_3 (obj, 1, scm_top_level_env(env_thunk)); | |
2992 | } | |
2993 | ||
2994 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
2995 | #ifdef __STDC__ | |
2996 | SCM | |
2997 | scm_eval (SCM obj) | |
2998 | #else | |
2999 | SCM | |
3000 | scm_eval (obj) | |
3001 | SCM obj; | |
3002 | #endif | |
3003 | { | |
3004 | return | |
3005 | scm_eval_3(obj, 1, scm_top_level_env(SCM_CDR(scm_top_level_lookup_thunk_var))); | |
3006 | } | |
3007 | ||
3008 | SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); | |
3009 | #ifdef __STDC__ | |
3010 | SCM | |
3011 | scm_eval_x (SCM obj) | |
3012 | #else | |
3013 | SCM | |
3014 | scm_eval_x (obj) | |
3015 | SCM obj; | |
3016 | #endif | |
3017 | { | |
3018 | return | |
3019 | scm_eval_3(obj, | |
3020 | 0, | |
3021 | scm_top_level_env (SCM_CDR (scm_top_level_lookup_thunk_var))); | |
3022 | } | |
3023 | ||
3024 | SCM_PROC (s_macro_eval_x, "macro-eval!", 2, 0, 0, scm_macro_eval_x); | |
3025 | #ifdef __STDC__ | |
3026 | SCM | |
3027 | scm_macro_eval_x (SCM exp, SCM env) | |
3028 | #else | |
3029 | SCM | |
3030 | scm_macro_eval_x (exp, env) | |
3031 | SCM exp; | |
3032 | SCM env; | |
3033 | #endif | |
3034 | { | |
3035 | return scm_eval_3 (exp, 0, env); | |
3036 | } | |
3037 | ||
3038 | #ifdef __STDC__ | |
3039 | SCM | |
3040 | scm_definedp (SCM x, SCM env) | |
3041 | #else | |
3042 | SCM | |
3043 | scm_definedp (x, env) | |
3044 | SCM x; | |
3045 | SCM env; | |
3046 | #endif | |
3047 | { | |
3048 | SCM proc = SCM_CAR (x = SCM_CDR (x)); | |
3049 | if (SCM_ISYMP (proc)) | |
3050 | return SCM_BOOL_T; | |
3051 | else if(SCM_IMP(proc) || !SCM_SYMBOLP(proc)) | |
3052 | return SCM_BOOL_F; | |
3053 | else | |
3054 | { | |
3055 | SCM vcell = scm_sym2vcell(proc, env_top_level(env), SCM_BOOL_F); | |
3056 | return (vcell == SCM_BOOL_F || SCM_UNBNDP(SCM_CDR(vcell))) ? SCM_BOOL_F : SCM_BOOL_T; | |
3057 | } | |
3058 | } | |
3059 | ||
3060 | static scm_smobfuns promsmob = | |
3061 | {scm_markcdr, scm_free0, prinprom}; | |
3062 | ||
3063 | static scm_smobfuns macrosmob = | |
3064 | {scm_markcdr, scm_free0, prinmacro}; | |
3065 | ||
3066 | #ifdef __STDC__ | |
3067 | SCM | |
3068 | scm_make_synt (char *name, SCM (*macroizer) (), SCM (*fcn) ()) | |
3069 | #else | |
3070 | SCM | |
3071 | scm_make_synt (name, macroizer, fcn) | |
3072 | char *name; | |
3073 | SCM (*macroizer) (); | |
3074 | SCM (*fcn) (); | |
3075 | #endif | |
3076 | { | |
3077 | SCM symcell = scm_sysintern (name, SCM_UNDEFINED); | |
3078 | long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); | |
3079 | register SCM z; | |
3080 | if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) | |
3081 | tmp = 0; | |
3082 | SCM_NEWCELL (z); | |
3083 | SCM_SUBRF (z) = fcn; | |
3084 | SCM_CAR (z) = tmp + scm_tc7_subr_2; | |
3085 | SCM_CDR (symcell) = macroizer (z); | |
3086 | return SCM_CAR (symcell); | |
3087 | } | |
3088 | ||
6dbd0af5 MD |
3089 | |
3090 | /* At this point, scm_deval and scm_dapply are generated. | |
3091 | */ | |
3092 | ||
0f2d19dd | 3093 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
3094 | # define DEVAL |
3095 | # include "eval.c" | |
0f2d19dd JB |
3096 | #endif |
3097 | ||
3098 | ||
3099 | #ifdef __STDC__ | |
3100 | void | |
3101 | scm_init_eval (void) | |
3102 | #else | |
3103 | void | |
3104 | scm_init_eval () | |
3105 | #endif | |
3106 | { | |
0f2d19dd JB |
3107 | scm_tc16_promise = scm_newsmob (&promsmob); |
3108 | scm_tc16_macro = scm_newsmob (¯osmob); | |
3109 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); | |
3110 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
3111 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
3112 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
3113 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
3114 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
3115 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
3116 | ||
3117 | /* acros */ | |
3118 | scm_i_quasiquote = scm_make_synt (s_quasiquote, scm_makacro, scm_m_quasiquote); | |
6dbd0af5 | 3119 | scm_make_synt (s_undefine, scm_makacro, scm_m_undefine); |
0f2d19dd JB |
3120 | scm_make_synt (s_delay, scm_makacro, scm_m_delay); |
3121 | /* end of acros */ | |
3122 | ||
3123 | scm_top_level_lookup_thunk_var = | |
3124 | scm_sysintern("*top-level-lookup-thunk*", SCM_BOOL_F); | |
3125 | ||
6dbd0af5 MD |
3126 | scm_i_and = scm_make_synt ("and", scm_makmmacro, scm_m_and); |
3127 | scm_i_begin = scm_make_synt ("begin", scm_makmmacro, scm_m_begin); | |
3128 | scm_i_case = scm_make_synt ("case", scm_makmmacro, scm_m_case); | |
3129 | scm_i_cond = scm_make_synt ("cond", scm_makmmacro, scm_m_cond); | |
3130 | scm_i_define = scm_make_synt ("define", scm_makmmacro, scm_m_define); | |
3131 | scm_i_do = scm_make_synt ("do", scm_makmmacro, scm_m_do); | |
3132 | scm_i_if = scm_make_synt ("if", scm_makmmacro, scm_m_if); | |
0f2d19dd JB |
3133 | scm_i_lambda = scm_make_synt ("lambda", scm_makmmacro, scm_m_lambda); |
3134 | scm_i_let = scm_make_synt ("let", scm_makmmacro, scm_m_let); | |
6dbd0af5 MD |
3135 | scm_i_letrec = scm_make_synt ("letrec", scm_makmmacro, scm_m_letrec); |
3136 | scm_i_letstar = scm_make_synt ("let*", scm_makmmacro, scm_m_letstar); | |
3137 | scm_i_or = scm_make_synt ("or", scm_makmmacro, scm_m_or); | |
0f2d19dd | 3138 | scm_i_quote = scm_make_synt ("quote", scm_makmmacro, scm_m_quote); |
6dbd0af5 MD |
3139 | scm_i_set = scm_make_synt ("set!", scm_makmmacro, scm_m_set); |
3140 | scm_i_atapply = scm_make_synt ("@apply", scm_makmmacro, scm_m_apply); | |
3141 | scm_i_atcall_cc = scm_make_synt ("@call-with-current-continuation", | |
3142 | scm_makmmacro, scm_m_cont); | |
3143 | ||
0f2d19dd JB |
3144 | scm_make_synt ("defined?", scm_makmmacro, scm_definedp); |
3145 | scm_i_name = SCM_CAR (scm_sysintern ("name", SCM_UNDEFINED)); | |
3146 | scm_permanent_object (scm_i_name); | |
6dbd0af5 MD |
3147 | |
3148 | #ifdef DEBUG_EXTENSIONS | |
3149 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
3150 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
3151 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
3152 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
3153 | #endif | |
3154 | ||
0f2d19dd JB |
3155 | #include "eval.x" |
3156 | } | |
0f2d19dd | 3157 | |
6dbd0af5 | 3158 | #endif /* !DEVAL */ |