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