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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
2 | * | |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
6dbd0af5 MD |
43 | /* This file is read twice in order to produce debugging versions of |
44 | * scm_ceval and scm_apply. These functions, scm_deval and | |
45 | * scm_dapply, are produced when we define the preprocessor macro | |
46 | * DEVAL. The file is divided into sections which are treated | |
47 | * differently with respect to DEVAL. The heads of these sections are | |
48 | * marked with the string "SECTION:". | |
49 | */ | |
50 | ||
51 | ||
52 | /* SECTION: This code is compiled once. | |
0f2d19dd JB |
53 | */ |
54 | ||
55 | #ifndef DEVAL | |
56 | ||
57 | #include <stdio.h> | |
58 | #include "_scm.h" | |
20e6290e JB |
59 | #include "debug.h" |
60 | #include "append.h" | |
61 | #include "alist.h" | |
62 | #include "sequences.h" | |
63 | #include "eq.h" | |
64 | #include "continuations.h" | |
65 | #include "throw.h" | |
66 | #include "smob.h" | |
67 | #include "markers.h" | |
68 | #include "procprop.h" | |
69 | #include "hashtab.h" | |
ac46ab16 | 70 | #include "hash.h" |
0f2d19dd | 71 | |
20e6290e JB |
72 | #ifdef DEBUG_EXTENSIONS |
73 | #include "debug.h" | |
74 | #endif /* DEBUG_EXTENSIONS */ | |
75 | ||
76 | #include "srcprop.h" | |
77 | #include "stackchk.h" | |
78 | ||
79 | #include "eval.h" | |
0f2d19dd JB |
80 | \f |
81 | ||
6dbd0af5 MD |
82 | /* The evaluator contains a plethora of EVAL symbols. |
83 | * This is an attempt at explanation. | |
84 | * | |
85 | * The following macros should be used in code which is read twice | |
86 | * (where the choice of evaluator is hard soldered): | |
87 | * | |
88 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
89 | * Originally, it is defined to scm_ceval, but is redefined to | |
90 | * scm_deval during the second pass. | |
91 | * | |
92 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
93 | * only side effects of expressions matter. All immediates are | |
94 | * ignored. | |
95 | * | |
96 | * EVALIM is used when it is known that the expression is an | |
97 | * immediate. (This macro never calls an evaluator.) | |
98 | * | |
99 | * EVALCAR evaluates the car of an expression. | |
100 | * | |
101 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
102 | * car is a lisp cell. | |
103 | * | |
104 | * The following macros should be used in code which is read once | |
105 | * (where the choice of evaluator is dynamic): | |
106 | * | |
107 | * XEVAL takes care of immediates without calling an evaluator. It | |
108 | * then calls scm_ceval *or* scm_deval, depending on the debugging | |
109 | * mode. | |
110 | * | |
111 | * XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval | |
112 | * depending on the debugging mode. | |
113 | * | |
114 | * The main motivation for keeping this plethora is efficiency | |
115 | * together with maintainability (=> locality of code). | |
116 | */ | |
117 | ||
0f2d19dd JB |
118 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR(x)) \ |
119 | ? *scm_lookupcar(x, env) \ | |
120 | : SCM_CEVAL(SCM_CAR(x), env)) | |
121 | ||
122 | #ifdef MEMOIZE_LOCALS | |
6dbd0af5 | 123 | #define EVALIM(x, env) (SCM_ILOCP(x)?*scm_ilookup((x), env):x) |
0f2d19dd | 124 | #else |
6dbd0af5 | 125 | #define EVALIM(x, env) x |
0f2d19dd JB |
126 | #endif |
127 | #define EVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x))\ | |
128 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 129 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
130 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
131 | : EVALCELLCAR(x, env)) | |
132 | #ifdef DEBUG_EXTENSIONS | |
133 | #define XEVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x)) \ | |
134 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 135 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
136 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
137 | : (SCM_SYMBOLP(SCM_CAR(x)) \ | |
138 | ? *scm_lookupcar(x, env) \ | |
139 | : (*scm_ceval_ptr) (SCM_CAR(x), env))) | |
140 | #else | |
141 | #define XEVALCAR(x, env) EVALCAR(x, env) | |
142 | #endif | |
143 | ||
e2806c10 | 144 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
145 | |
146 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 147 | |
0f2d19dd JB |
148 | SCM * |
149 | scm_ilookup (iloc, env) | |
150 | SCM iloc; | |
151 | SCM env; | |
0f2d19dd JB |
152 | { |
153 | register int ir = SCM_IFRAME (iloc); | |
154 | register SCM er = env; | |
155 | for (; 0 != ir; --ir) | |
156 | er = SCM_CDR (er); | |
157 | er = SCM_CAR (er); | |
158 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
159 | er = SCM_CDR (er); | |
160 | if (SCM_ICDRP (iloc)) | |
161 | return &SCM_CDR (er); | |
162 | return &SCM_CAR (SCM_CDR (er)); | |
163 | } | |
164 | #endif | |
165 | ||
1cc91f1b | 166 | |
0f2d19dd JB |
167 | SCM * |
168 | scm_lookupcar (vloc, genv) | |
169 | SCM vloc; | |
170 | SCM genv; | |
0f2d19dd JB |
171 | { |
172 | SCM env = genv; | |
173 | register SCM *al, fl, var = SCM_CAR (vloc); | |
174 | #ifdef MEMOIZE_LOCALS | |
175 | register SCM iloc = SCM_ILOC00; | |
176 | #endif | |
177 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
178 | { | |
179 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
180 | break; | |
181 | al = &SCM_CAR (env); | |
182 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) | |
183 | { | |
184 | if (SCM_NCONSP (fl)) | |
185 | if (fl == var) | |
186 | { | |
187 | #ifdef MEMOIZE_LOCALS | |
188 | SCM_CAR (vloc) = iloc + SCM_ICDR; | |
189 | #endif | |
190 | return &SCM_CDR (*al); | |
191 | } | |
192 | else | |
193 | break; | |
194 | al = &SCM_CDR (*al); | |
195 | if (SCM_CAR (fl) == var) | |
196 | { | |
197 | #ifdef MEMOIZE_LOCALS | |
198 | #ifndef RECKLESS /* letrec inits to SCM_UNDEFINED */ | |
199 | if (SCM_UNBNDP (SCM_CAR (*al))) | |
200 | { | |
201 | env = SCM_EOL; | |
202 | goto errout; | |
203 | } | |
204 | #endif | |
205 | SCM_CAR (vloc) = iloc; | |
206 | #endif | |
207 | return &SCM_CAR (*al); | |
208 | } | |
209 | #ifdef MEMOIZE_LOCALS | |
210 | iloc += SCM_IDINC; | |
211 | #endif | |
212 | } | |
213 | #ifdef MEMOIZE_LOCALS | |
214 | iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC); | |
215 | #endif | |
216 | } | |
217 | { | |
218 | SCM top_thunk, vcell; | |
219 | if (SCM_NIMP(env)) | |
220 | { | |
221 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
222 | env = SCM_CDR (env); | |
223 | } | |
224 | else | |
225 | top_thunk = SCM_BOOL_F; | |
226 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
227 | if (vcell == SCM_BOOL_F) | |
228 | goto errout; | |
229 | else | |
230 | var = vcell; | |
231 | } | |
232 | #ifndef RECKLESS | |
233 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) | |
234 | { | |
235 | var = SCM_CAR (var); | |
236 | errout: | |
f5bf2977 | 237 | /* scm_everr (vloc, genv,...) */ |
01f61221 | 238 | scm_error (scm_misc_error_key, |
f5bf2977 GH |
239 | NULL, |
240 | SCM_NULLP (env) | |
241 | ? "Unbound variable: %S" | |
242 | : "Damaged environment: %S", | |
243 | scm_listify (var, SCM_UNDEFINED), | |
244 | SCM_BOOL_F); | |
0f2d19dd JB |
245 | } |
246 | #endif | |
247 | SCM_CAR (vloc) = var + 1; | |
248 | /* Except wait...what if the var is not a vcell, | |
249 | * but syntax or something.... | |
250 | */ | |
251 | return &SCM_CDR (var); | |
252 | } | |
253 | ||
254 | #define unmemocar scm_unmemocar | |
1cc91f1b | 255 | |
0f2d19dd JB |
256 | SCM |
257 | scm_unmemocar (form, env) | |
258 | SCM form; | |
259 | SCM env; | |
0f2d19dd | 260 | { |
6dbd0af5 | 261 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 262 | register int ir; |
6dbd0af5 | 263 | #endif |
0f2d19dd JB |
264 | SCM c; |
265 | ||
266 | if (SCM_IMP (form)) | |
267 | return form; | |
268 | c = SCM_CAR (form); | |
269 | if (1 == (c & 7)) | |
270 | SCM_CAR (form) = SCM_CAR (c - 1); | |
271 | #ifdef MEMOIZE_LOCALS | |
6dbd0af5 | 272 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
273 | else if (SCM_ILOCP (c)) |
274 | { | |
275 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
276 | env = SCM_CDR (env); | |
277 | env = SCM_CAR (SCM_CAR (env)); | |
278 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
279 | env = SCM_CDR (env); | |
280 | SCM_CAR (form) = SCM_ICDRP (c) ? env : SCM_CAR (env); | |
281 | } | |
6dbd0af5 | 282 | #endif |
0f2d19dd JB |
283 | #endif |
284 | return form; | |
285 | } | |
286 | ||
1cc91f1b | 287 | |
0f2d19dd JB |
288 | SCM |
289 | scm_eval_car (pair, env) | |
290 | SCM pair; | |
291 | SCM env; | |
0f2d19dd | 292 | { |
6dbd0af5 | 293 | return XEVALCAR (pair, env); |
0f2d19dd JB |
294 | } |
295 | ||
296 | \f | |
297 | /* | |
298 | * The following rewrite expressions and | |
299 | * some memoized forms have different syntax | |
300 | */ | |
301 | ||
302 | static char s_expression[] = "missing or extra expression"; | |
303 | static char s_test[] = "bad test"; | |
304 | static char s_body[] = "bad body"; | |
305 | static char s_bindings[] = "bad bindings"; | |
306 | static char s_variable[] = "bad variable"; | |
307 | static char s_clauses[] = "bad or missing clauses"; | |
308 | static char s_formals[] = "bad formals"; | |
309 | #define ASSYNT(_cond, _arg, _pos, _subr) if(!(_cond))scm_wta(_arg, (char *)_pos, _subr); | |
310 | ||
311 | SCM scm_i_dot, scm_i_quote, scm_i_quasiquote, scm_i_lambda, scm_i_let, | |
312 | scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply; | |
313 | SCM scm_i_name; | |
6dbd0af5 MD |
314 | SCM scm_i_define, scm_i_and, scm_i_begin, scm_i_case, scm_i_cond, |
315 | scm_i_do, scm_i_if, scm_i_let, scm_i_letrec, scm_i_letstar, | |
316 | scm_i_or, scm_i_set, scm_i_atapply, scm_i_atcall_cc; | |
0f2d19dd JB |
317 | static char s_quasiquote[] = "quasiquote"; |
318 | static char s_delay[] = "delay"; | |
6dbd0af5 MD |
319 | static char s_undefine[] = "undefine"; |
320 | #ifdef DEBUG_EXTENSIONS | |
321 | SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame; | |
322 | SCM scm_i_trace; | |
323 | #endif | |
0f2d19dd JB |
324 | |
325 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
326 | ||
327 | ||
1cc91f1b JB |
328 | |
329 | static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, char *what)); | |
330 | ||
0f2d19dd JB |
331 | static void |
332 | bodycheck (xorig, bodyloc, what) | |
333 | SCM xorig; | |
334 | SCM *bodyloc; | |
335 | char *what; | |
0f2d19dd JB |
336 | { |
337 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, s_expression); | |
338 | } | |
339 | ||
340 | ||
1cc91f1b | 341 | |
0f2d19dd JB |
342 | SCM |
343 | scm_m_quote (xorig, env) | |
344 | SCM xorig; | |
345 | SCM env; | |
0f2d19dd JB |
346 | { |
347 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "quote"); | |
348 | return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig)); | |
349 | } | |
350 | ||
351 | ||
1cc91f1b | 352 | |
0f2d19dd JB |
353 | SCM |
354 | scm_m_begin (xorig, env) | |
355 | SCM xorig; | |
356 | SCM env; | |
0f2d19dd JB |
357 | { |
358 | ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, xorig, s_expression, "begin"); | |
359 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); | |
360 | } | |
361 | ||
362 | ||
1cc91f1b | 363 | |
0f2d19dd JB |
364 | SCM |
365 | scm_m_if (xorig, env) | |
366 | SCM xorig; | |
367 | SCM env; | |
0f2d19dd JB |
368 | { |
369 | int len = scm_ilength (SCM_CDR (xorig)); | |
370 | ASSYNT (len >= 2 && len <= 3, xorig, s_expression, "if"); | |
371 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); | |
372 | } | |
373 | ||
374 | ||
1cc91f1b | 375 | |
0f2d19dd JB |
376 | SCM |
377 | scm_m_set (xorig, env) | |
378 | SCM xorig; | |
379 | SCM env; | |
0f2d19dd | 380 | { |
6dbd0af5 MD |
381 | SCM x = SCM_CDR (xorig); |
382 | ASSYNT (2 == scm_ilength (x), xorig, s_expression, "set!"); | |
383 | ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)), | |
384 | xorig, s_variable, "set!"); | |
0f2d19dd JB |
385 | return scm_cons (SCM_IM_SET, x); |
386 | } | |
387 | ||
388 | ||
389 | #if 0 | |
1cc91f1b | 390 | |
0f2d19dd JB |
391 | SCM |
392 | scm_m_vref (xorig, env) | |
393 | SCM xorig; | |
394 | SCM env; | |
0f2d19dd JB |
395 | { |
396 | SCM x = SCM_CDR (xorig); | |
397 | ASSYNT (1 == scm_ilength (x), xorig, s_expression, s_vref); | |
398 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) | |
399 | { | |
f5bf2977 | 400 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
01f61221 | 401 | scm_error (scm_misc_error_key, |
f5bf2977 GH |
402 | NULL, |
403 | "Bad variable: %S", | |
404 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED), | |
405 | SCM_BOOL_F); | |
0f2d19dd JB |
406 | } |
407 | ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), | |
408 | xorig, s_variable, s_vref); | |
409 | return | |
410 | return scm_cons (IM_VREF, x); | |
411 | } | |
412 | ||
413 | ||
1cc91f1b | 414 | |
0f2d19dd JB |
415 | SCM |
416 | scm_m_vset (xorig, env) | |
417 | SCM xorig; | |
418 | SCM env; | |
0f2d19dd JB |
419 | { |
420 | SCM x = SCM_CDR (xorig); | |
421 | ASSYNT (3 == scm_ilength (x), xorig, s_expression, s_vset); | |
422 | ASSYNT (( DEFSCM_VARIABLEP (SCM_CAR (x)) | |
423 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
424 | xorig, s_variable, s_vset); | |
425 | return scm_cons (IM_VSET, x); | |
426 | } | |
427 | #endif | |
428 | ||
429 | ||
1cc91f1b | 430 | |
0f2d19dd JB |
431 | SCM |
432 | scm_m_and (xorig, env) | |
433 | SCM xorig; | |
434 | SCM env; | |
0f2d19dd JB |
435 | { |
436 | int len = scm_ilength (SCM_CDR (xorig)); | |
437 | ASSYNT (len >= 0, xorig, s_test, "and"); | |
438 | if (len >= 1) | |
439 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); | |
440 | else | |
441 | return SCM_BOOL_T; | |
442 | } | |
443 | ||
444 | ||
1cc91f1b | 445 | |
0f2d19dd JB |
446 | SCM |
447 | scm_m_or (xorig, env) | |
448 | SCM xorig; | |
449 | SCM env; | |
0f2d19dd JB |
450 | { |
451 | int len = scm_ilength (SCM_CDR (xorig)); | |
452 | ASSYNT (len >= 0, xorig, s_test, "or"); | |
453 | if (len >= 1) | |
454 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); | |
455 | else | |
456 | return SCM_BOOL_F; | |
457 | } | |
458 | ||
459 | ||
1cc91f1b | 460 | |
0f2d19dd JB |
461 | SCM |
462 | scm_m_case (xorig, env) | |
463 | SCM xorig; | |
464 | SCM env; | |
0f2d19dd JB |
465 | { |
466 | SCM proc, x = SCM_CDR (xorig); | |
467 | ASSYNT (scm_ilength (x) >= 2, xorig, s_clauses, "case"); | |
468 | while (SCM_NIMP (x = SCM_CDR (x))) | |
469 | { | |
470 | proc = SCM_CAR (x); | |
471 | ASSYNT (scm_ilength (proc) >= 2, xorig, s_clauses, "case"); | |
472 | ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 || scm_i_else == SCM_CAR (proc), | |
473 | xorig, s_clauses, "case"); | |
474 | } | |
475 | return scm_cons (SCM_IM_CASE, SCM_CDR (xorig)); | |
476 | } | |
477 | ||
478 | ||
1cc91f1b | 479 | |
0f2d19dd JB |
480 | SCM |
481 | scm_m_cond (xorig, env) | |
482 | SCM xorig; | |
483 | SCM env; | |
0f2d19dd JB |
484 | { |
485 | SCM arg1, x = SCM_CDR (xorig); | |
486 | int len = scm_ilength (x); | |
487 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
488 | while (SCM_NIMP (x)) | |
489 | { | |
490 | arg1 = SCM_CAR (x); | |
491 | len = scm_ilength (arg1); | |
492 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
493 | if (scm_i_else == SCM_CAR (arg1)) | |
494 | { | |
495 | ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, xorig, "bad ELSE clause", "cond"); | |
496 | SCM_CAR (arg1) = SCM_BOOL_T; | |
497 | } | |
498 | if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1))) | |
499 | ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), | |
500 | xorig, "bad recipient", "cond"); | |
501 | x = SCM_CDR (x); | |
502 | } | |
503 | return scm_cons (SCM_IM_COND, SCM_CDR (xorig)); | |
504 | } | |
505 | ||
506 | ||
1cc91f1b | 507 | |
0f2d19dd JB |
508 | SCM |
509 | scm_m_lambda (xorig, env) | |
510 | SCM xorig; | |
511 | SCM env; | |
0f2d19dd JB |
512 | { |
513 | SCM proc, x = SCM_CDR (xorig); | |
514 | if (scm_ilength (x) < 2) | |
515 | goto badforms; | |
516 | proc = SCM_CAR (x); | |
517 | if SCM_NULLP | |
518 | (proc) goto memlambda; | |
519 | if SCM_IMP | |
520 | (proc) goto badforms; | |
521 | if SCM_SYMBOLP | |
522 | (proc) goto memlambda; | |
523 | if SCM_NCONSP | |
524 | (proc) goto badforms; | |
525 | while SCM_NIMP | |
526 | (proc) | |
527 | { | |
528 | if SCM_NCONSP | |
529 | (proc) | |
530 | if (!SCM_SYMBOLP (proc)) | |
531 | goto badforms; | |
532 | else | |
533 | goto memlambda; | |
534 | if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc)))) | |
535 | goto badforms; | |
536 | proc = SCM_CDR (proc); | |
537 | } | |
538 | if SCM_NNULLP | |
539 | (proc) | |
540 | badforms:scm_wta (xorig, s_formals, "lambda"); | |
541 | memlambda: | |
542 | bodycheck (xorig, &SCM_CDR (x), "lambda"); | |
543 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); | |
544 | } | |
545 | ||
546 | ||
1cc91f1b | 547 | |
0f2d19dd JB |
548 | SCM |
549 | scm_m_letstar (xorig, env) | |
550 | SCM xorig; | |
551 | SCM env; | |
0f2d19dd JB |
552 | { |
553 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
554 | int len = scm_ilength (x); | |
555 | ASSYNT (len >= 2, xorig, s_body, "let*"); | |
556 | proc = SCM_CAR (x); | |
557 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let*"); | |
6dbd0af5 | 558 | while SCM_NIMP (proc) |
0f2d19dd JB |
559 | { |
560 | arg1 = SCM_CAR (proc); | |
561 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let*"); | |
562 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let*"); | |
563 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
564 | varloc = &SCM_CDR (SCM_CDR (*varloc)); | |
565 | proc = SCM_CDR (proc); | |
566 | } | |
567 | x = scm_cons (vars, SCM_CDR (x)); | |
568 | bodycheck (xorig, &SCM_CDR (x), "let*"); | |
569 | return scm_cons (SCM_IM_LETSTAR, x); | |
570 | } | |
571 | ||
572 | /* DO gets the most radically altered syntax | |
573 | (do ((<var1> <init1> <step1>) | |
574 | (<var2> <init2>) | |
575 | ... ) | |
576 | (<test> <return>) | |
577 | <body>) | |
578 | ;; becomes | |
579 | (do_mem (varn ... var2 var1) | |
580 | (<init1> <init2> ... <initn>) | |
581 | (<test> <return>) | |
582 | (<body>) | |
583 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
584 | */ | |
585 | ||
586 | ||
1cc91f1b | 587 | |
0f2d19dd JB |
588 | SCM |
589 | scm_m_do (xorig, env) | |
590 | SCM xorig; | |
591 | SCM env; | |
0f2d19dd JB |
592 | { |
593 | SCM x = SCM_CDR (xorig), arg1, proc; | |
594 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
595 | SCM *initloc = &inits, *steploc = &steps; | |
596 | int len = scm_ilength (x); | |
597 | ASSYNT (len >= 2, xorig, s_test, "do"); | |
598 | proc = SCM_CAR (x); | |
599 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "do"); | |
600 | while SCM_NIMP | |
601 | (proc) | |
602 | { | |
603 | arg1 = SCM_CAR (proc); | |
604 | len = scm_ilength (arg1); | |
605 | ASSYNT (2 == len || 3 == len, xorig, s_bindings, "do"); | |
606 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "do"); | |
607 | /* vars reversed here, inits and steps reversed at evaluation */ | |
608 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
609 | arg1 = SCM_CDR (arg1); | |
610 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
611 | initloc = &SCM_CDR (*initloc); | |
612 | arg1 = SCM_CDR (arg1); | |
613 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
614 | steploc = &SCM_CDR (*steploc); | |
615 | proc = SCM_CDR (proc); | |
616 | } | |
617 | x = SCM_CDR (x); | |
618 | ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, s_test, "do"); | |
619 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); | |
620 | x = scm_cons2 (vars, inits, x); | |
621 | bodycheck (xorig, &SCM_CAR (SCM_CDR (SCM_CDR (x))), "do"); | |
622 | return scm_cons (SCM_IM_DO, x); | |
623 | } | |
624 | ||
6dbd0af5 MD |
625 | /* evalcar is small version of inline EVALCAR when we don't care about |
626 | * speed | |
627 | */ | |
628 | #define evalcar scm_eval_car | |
0f2d19dd | 629 | |
1cc91f1b JB |
630 | |
631 | static SCM iqq SCM_P ((SCM form, SCM env, int depth)); | |
632 | ||
0f2d19dd JB |
633 | static SCM |
634 | iqq (form, env, depth) | |
635 | SCM form; | |
636 | SCM env; | |
637 | int depth; | |
0f2d19dd JB |
638 | { |
639 | SCM tmp; | |
640 | int edepth = depth; | |
641 | if SCM_IMP | |
642 | (form) return form; | |
643 | if (SCM_VECTORP (form)) | |
644 | { | |
645 | long i = SCM_LENGTH (form); | |
646 | SCM *data = SCM_VELTS (form); | |
647 | tmp = SCM_EOL; | |
648 | for (; --i >= 0;) | |
649 | tmp = scm_cons (data[i], tmp); | |
650 | return scm_vector (iqq (tmp, env, depth)); | |
651 | } | |
652 | if SCM_NCONSP | |
653 | (form) return form; | |
654 | tmp = SCM_CAR (form); | |
655 | if (scm_i_quasiquote == tmp) | |
656 | { | |
657 | depth++; | |
658 | goto label; | |
659 | } | |
660 | if (scm_i_unquote == tmp) | |
661 | { | |
662 | --depth; | |
663 | label: | |
664 | form = SCM_CDR (form); | |
665 | /* !!! might need a check here to be sure that form isn't a struct. */ | |
666 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), | |
667 | form, SCM_ARG1, s_quasiquote); | |
668 | if (0 == depth) | |
669 | return evalcar (form, env); | |
670 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
671 | } | |
672 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
673 | { | |
674 | tmp = SCM_CDR (tmp); | |
675 | if (0 == --edepth) | |
676 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
677 | } | |
678 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
679 | } | |
680 | ||
681 | /* Here are acros which return values rather than code. */ | |
682 | ||
1cc91f1b | 683 | |
0f2d19dd JB |
684 | SCM |
685 | scm_m_quasiquote (xorig, env) | |
686 | SCM xorig; | |
687 | SCM env; | |
0f2d19dd JB |
688 | { |
689 | SCM x = SCM_CDR (xorig); | |
690 | ASSYNT (scm_ilength (x) == 1, xorig, s_expression, s_quasiquote); | |
691 | return iqq (SCM_CAR (x), env, 1); | |
692 | } | |
693 | ||
1cc91f1b | 694 | |
0f2d19dd JB |
695 | SCM |
696 | scm_m_delay (xorig, env) | |
697 | SCM xorig; | |
698 | SCM env; | |
0f2d19dd JB |
699 | { |
700 | ASSYNT (scm_ilength (xorig) == 2, xorig, s_expression, s_delay); | |
701 | xorig = SCM_CDR (xorig); | |
702 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
703 | env)); | |
704 | } | |
705 | ||
1cc91f1b JB |
706 | |
707 | static SCM env_top_level SCM_P ((SCM env)); | |
708 | ||
0f2d19dd JB |
709 | static SCM |
710 | env_top_level (env) | |
711 | SCM env; | |
0f2d19dd JB |
712 | { |
713 | while (SCM_NIMP(env)) | |
714 | { | |
715 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR(env))) | |
716 | return SCM_CAR(env); | |
717 | env = SCM_CDR (env); | |
718 | } | |
719 | return SCM_BOOL_F; | |
720 | } | |
721 | ||
1cc91f1b | 722 | |
0f2d19dd JB |
723 | SCM |
724 | scm_m_define (x, env) | |
725 | SCM x; | |
726 | SCM env; | |
0f2d19dd JB |
727 | { |
728 | SCM proc, arg1 = x; | |
729 | x = SCM_CDR (x); | |
730 | /* ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ | |
731 | ASSYNT (scm_ilength (x) >= 2, arg1, s_expression, "define"); | |
732 | proc = SCM_CAR (x); | |
733 | x = SCM_CDR (x); | |
734 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
735 | { /* nested define syntax */ | |
736 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
737 | proc = SCM_CAR (proc); | |
738 | } | |
739 | ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), arg1, s_variable, "define"); | |
740 | ASSYNT (1 == scm_ilength (x), arg1, s_expression, "define"); | |
741 | if (SCM_TOP_LEVEL (env)) | |
742 | { | |
743 | x = evalcar (x, env); | |
6dbd0af5 | 744 | #ifdef DEBUG_EXTENSIONS |
b7ff98dd | 745 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x) && SCM_CLOSUREP (x)) |
6dbd0af5 MD |
746 | scm_set_procedure_property_x (x, scm_i_name, proc); |
747 | #endif | |
0f2d19dd JB |
748 | arg1 = scm_sym2vcell (proc, env_top_level (env), SCM_BOOL_T); |
749 | #if 0 | |
750 | #ifndef RECKLESS | |
751 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) | |
752 | && (SCM_CDR (arg1) != x)) | |
753 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
754 | else | |
755 | #endif | |
756 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
757 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd JB |
758 | #endif |
759 | SCM_CDR (arg1) = x; | |
760 | #ifdef SICP | |
761 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
762 | #else | |
763 | return SCM_UNSPECIFIED; | |
764 | #endif | |
765 | } | |
766 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
767 | } | |
6dbd0af5 MD |
768 | |
769 | SCM | |
770 | scm_m_undefine (x, env) | |
771 | SCM x, env; | |
772 | { | |
773 | SCM arg1 = x; | |
774 | x = SCM_CDR (x); | |
775 | ASSYNT (SCM_TOP_LEVEL (env), arg1, "bad placement ", s_undefine); | |
776 | ASSYNT (SCM_NIMP (x) && SCM_CONSP (x) && SCM_CDR (x) == SCM_EOL, | |
777 | arg1, s_expression, s_undefine); | |
778 | x = SCM_CAR (x); | |
779 | ASSYNT (SCM_NIMP (x) && SCM_SYMBOLP (x), arg1, s_variable, s_undefine); | |
780 | arg1 = scm_sym2vcell (x, env_top_level (env), SCM_BOOL_F); | |
781 | ASSYNT (SCM_NFALSEP (arg1) && !SCM_UNBNDP (SCM_CDR (arg1)), | |
782 | x, "variable already unbound ", s_undefine); | |
783 | #if 0 | |
784 | #ifndef RECKLESS | |
785 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == x)) | |
786 | scm_warn ("undefining built-in ", SCM_CHARS (x)); | |
787 | else | |
788 | #endif | |
789 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
790 | scm_warn ("redefining ", SCM_CHARS (x)); | |
791 | #endif | |
792 | SCM_CDR (arg1) = SCM_UNDEFINED; | |
793 | #ifdef SICP | |
794 | return SCM_CAR (arg1); | |
795 | #else | |
796 | return SCM_UNSPECIFIED; | |
797 | #endif | |
798 | } | |
799 | ||
0f2d19dd JB |
800 | /* end of acros */ |
801 | ||
1cc91f1b | 802 | |
0f2d19dd JB |
803 | SCM |
804 | scm_m_letrec (xorig, env) | |
805 | SCM xorig; | |
806 | SCM env; | |
0f2d19dd JB |
807 | { |
808 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
809 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
810 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
811 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
812 | ||
813 | ASRTSYNTAX (scm_ilength (x) >= 2, s_body); | |
814 | proc = SCM_CAR (x); | |
815 | if SCM_NULLP | |
816 | (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
817 | ASRTSYNTAX (scm_ilength (proc) >= 1, s_bindings); | |
818 | do | |
819 | { | |
820 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
821 | arg1 = SCM_CAR (proc); | |
822 | ASRTSYNTAX (2 == scm_ilength (arg1), s_bindings); | |
823 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), s_variable); | |
824 | vars = scm_cons (SCM_CAR (arg1), vars); | |
825 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
826 | initloc = &SCM_CDR (*initloc); | |
827 | } | |
828 | while SCM_NIMP | |
829 | (proc = SCM_CDR (proc)); | |
830 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); | |
831 | bodycheck (xorig, &SCM_CDR (SCM_CDR (cdrx)), what); | |
832 | return scm_cons (SCM_IM_LETREC, cdrx); | |
833 | } | |
834 | ||
1cc91f1b | 835 | |
0f2d19dd JB |
836 | SCM |
837 | scm_m_let (xorig, env) | |
838 | SCM xorig; | |
839 | SCM env; | |
0f2d19dd JB |
840 | { |
841 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
842 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
843 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
844 | ||
845 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
846 | proc = SCM_CAR (x); | |
847 | if (SCM_NULLP (proc) | |
848 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
849 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
850 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
851 | ASSYNT (SCM_NIMP (proc), xorig, s_bindings, "let"); | |
852 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ | |
853 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
854 | if (!SCM_SYMBOLP (proc)) | |
855 | scm_wta (xorig, s_bindings, "let"); /* bad let */ | |
856 | name = proc; /* named let, build equiv letrec */ | |
857 | x = SCM_CDR (x); | |
858 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
859 | proc = SCM_CAR (x); /* bindings scm_list */ | |
860 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let"); | |
861 | while SCM_NIMP | |
862 | (proc) | |
863 | { /* vars and inits both in order */ | |
864 | arg1 = SCM_CAR (proc); | |
865 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let"); | |
866 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let"); | |
867 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); | |
868 | varloc = &SCM_CDR (*varloc); | |
869 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
870 | initloc = &SCM_CDR (*initloc); | |
871 | proc = SCM_CDR (proc); | |
872 | } | |
873 | return | |
874 | scm_m_letrec (scm_cons2 (scm_i_let, | |
875 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
876 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
877 | env); | |
878 | } | |
879 | ||
880 | ||
1cc91f1b | 881 | |
0f2d19dd JB |
882 | SCM |
883 | scm_m_apply (xorig, env) | |
884 | SCM xorig; | |
885 | SCM env; | |
0f2d19dd JB |
886 | { |
887 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, xorig, s_expression, "@apply"); | |
888 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); | |
889 | } | |
890 | ||
e2806c10 | 891 | #define s_atcall_cc (SCM_ISYMCHARS(SCM_IM_CONT)+1) |
0f2d19dd | 892 | |
1cc91f1b | 893 | |
0f2d19dd JB |
894 | SCM |
895 | scm_m_cont (xorig, env) | |
896 | SCM xorig; | |
897 | SCM env; | |
0f2d19dd JB |
898 | { |
899 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "@call-with-current-continuation"); | |
900 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); | |
901 | } | |
902 | ||
6dbd0af5 MD |
903 | /* scm_unmemocopy takes a memoized expression together with its |
904 | * environment and rewrites it to its original form. Thus, it is the | |
905 | * inversion of the rewrite rules above. The procedure is not | |
906 | * optimized for speed. It's used in scm_iprin1 when printing the | |
907 | * code of a closure, in scm_procedure_source and in scm_expr_stack | |
908 | * when generating the source for a stackframe. | |
909 | */ | |
910 | ||
1cc91f1b JB |
911 | |
912 | static SCM unmemocopy SCM_P ((SCM x, SCM env)); | |
913 | ||
6dbd0af5 MD |
914 | static SCM |
915 | unmemocopy (x, env) | |
916 | SCM x; | |
917 | SCM env; | |
6dbd0af5 MD |
918 | { |
919 | SCM ls, z; | |
920 | #ifdef DEBUG_EXTENSIONS | |
921 | SCM p; | |
922 | #endif | |
923 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
924 | return x; | |
925 | #ifdef DEBUG_EXTENSIONS | |
926 | p = scm_whash_lookup (scm_source_whash, x); | |
927 | #endif | |
928 | switch (SCM_TYP7 (x)) | |
929 | { | |
930 | case (127 & SCM_IM_AND): | |
931 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
932 | break; | |
933 | case (127 & SCM_IM_BEGIN): | |
934 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
935 | break; | |
936 | case (127 & SCM_IM_CASE): | |
937 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
938 | break; | |
939 | case (127 & SCM_IM_COND): | |
940 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
941 | break; | |
942 | case (127 & SCM_IM_DO): | |
943 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
944 | goto transform; | |
945 | case (127 & SCM_IM_IF): | |
946 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
947 | break; | |
948 | case (127 & SCM_IM_LET): | |
949 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
950 | goto transform; | |
951 | case (127 & SCM_IM_LETREC): | |
952 | { | |
953 | SCM f, v, e, s; | |
954 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
955 | transform: | |
956 | x = SCM_CDR (x); | |
957 | f = v = SCM_CAR (x); | |
958 | x = SCM_CDR (x); | |
e2806c10 | 959 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
960 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
961 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
962 | env = z; | |
963 | s = SCM_CAR (ls) == scm_i_do | |
964 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
965 | : f; | |
966 | z = SCM_EOL; | |
967 | do | |
968 | { | |
969 | z = scm_acons (SCM_CAR (v), | |
970 | scm_cons (SCM_CAR (e), | |
971 | SCM_CAR (s) == SCM_CAR (v) | |
972 | ? SCM_EOL | |
973 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
974 | z); | |
975 | v = SCM_CDR (v); | |
976 | e = SCM_CDR (e); | |
977 | s = SCM_CDR (s); | |
978 | } | |
979 | while SCM_NIMP (v); | |
980 | SCM_CDR (ls) = z = scm_cons (z, SCM_UNSPECIFIED); | |
981 | if (SCM_CAR (ls) == scm_i_do) | |
982 | { | |
983 | x = SCM_CDR (x); | |
984 | z = (SCM_CDR (z) = scm_cons (unmemocopy (SCM_CAR (x), env), | |
985 | SCM_UNSPECIFIED)); | |
986 | x = (SCM) (&SCM_CAR (SCM_CDR (x)) - 1); | |
987 | } | |
988 | break; | |
989 | } | |
990 | case (127 & SCM_IM_LETSTAR): | |
991 | { | |
992 | SCM b, y; | |
993 | x = SCM_CDR (x); | |
994 | b = SCM_CAR (x); | |
995 | y = SCM_EOL; | |
996 | if SCM_IMP (b) | |
997 | { | |
e2806c10 | 998 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
999 | goto letstar; |
1000 | } | |
1001 | y = z = scm_acons (SCM_CAR (b), | |
1002 | unmemocar ( | |
1003 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1004 | SCM_UNSPECIFIED); | |
e2806c10 | 1005 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1006 | b = SCM_CDR (SCM_CDR (b)); |
1007 | if (SCM_IMP (b)) | |
1008 | { | |
1009 | SCM_SETCDR (y, SCM_EOL); | |
1010 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1011 | break; | |
1012 | } | |
1013 | do | |
1014 | { | |
1015 | z = (SCM_CDR (z) = scm_acons (SCM_CAR (b), | |
1016 | unmemocar ( | |
1017 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1018 | SCM_UNSPECIFIED)); | |
e2806c10 | 1019 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1020 | b = SCM_CDR (SCM_CDR (b)); |
1021 | } | |
1022 | while SCM_NIMP (b); | |
1023 | SCM_CDR (z) = SCM_EOL; | |
1024 | letstar: | |
1025 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1026 | break; | |
1027 | } | |
1028 | case (127 & SCM_IM_OR): | |
1029 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1030 | break; | |
1031 | case (127 & SCM_IM_LAMBDA): | |
1032 | x = SCM_CDR (x); | |
1033 | ls = scm_cons (scm_i_lambda, | |
1034 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1035 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1036 | break; |
1037 | case (127 & SCM_IM_QUOTE): | |
1038 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1039 | break; | |
1040 | case (127 & SCM_IM_SET): | |
1041 | ls = z = scm_cons (scm_i_set, SCM_UNSPECIFIED); | |
1042 | break; | |
1043 | case (127 & SCM_IM_DEFINE): | |
1044 | { | |
1045 | SCM n; | |
1046 | x = SCM_CDR (x); | |
1047 | ls = scm_cons (scm_i_define, | |
1048 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1049 | if (SCM_NNULLP (env)) | |
1050 | SCM_CAR (SCM_CAR (env)) = scm_cons (n, SCM_CAR (SCM_CAR (env))); | |
1051 | break; | |
1052 | } | |
1053 | case (127 & SCM_MAKISYM (0)): | |
1054 | z = SCM_CAR (x); | |
1055 | if (!SCM_ISYMP (z)) | |
1056 | goto unmemo; | |
1057 | switch SCM_ISYMNUM (z) | |
1058 | { | |
1059 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1060 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1061 | goto loop; | |
1062 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1063 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1064 | goto loop; | |
1065 | default: | |
1066 | } | |
1067 | unmemo: | |
1068 | default: | |
1069 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1070 | SCM_UNSPECIFIED), | |
1071 | env); | |
1072 | } | |
1073 | loop: | |
1074 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
1075 | z = (SCM_CDR (z) = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1076 | SCM_UNSPECIFIED), | |
1077 | env)); | |
1078 | SCM_CDR (z) = x; | |
1079 | #ifdef DEBUG_EXTENSIONS | |
1080 | if (SCM_NFALSEP (p)) | |
1081 | scm_whash_insert (scm_source_whash, ls, p); | |
1082 | #endif | |
1083 | return ls; | |
1084 | } | |
1085 | ||
1cc91f1b | 1086 | |
6dbd0af5 MD |
1087 | SCM |
1088 | scm_unmemocopy (x, env) | |
1089 | SCM x; | |
1090 | SCM env; | |
6dbd0af5 MD |
1091 | { |
1092 | if (SCM_NNULLP (env)) | |
1093 | /* Make a copy of the lowest frame to protect it from | |
1094 | modifications by SCM_IM_DEFINE */ | |
1095 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1096 | else | |
1097 | return unmemocopy (x, env); | |
1098 | } | |
1099 | ||
0f2d19dd | 1100 | #ifndef RECKLESS |
1cc91f1b | 1101 | |
0f2d19dd JB |
1102 | int |
1103 | scm_badargsp (formals, args) | |
1104 | SCM formals; | |
1105 | SCM args; | |
0f2d19dd JB |
1106 | { |
1107 | while SCM_NIMP | |
1108 | (formals) | |
1109 | { | |
1110 | if SCM_NCONSP | |
1111 | (formals) return 0; | |
1112 | if SCM_IMP | |
1113 | (args) return 1; | |
1114 | formals = SCM_CDR (formals); | |
1115 | args = SCM_CDR (args); | |
1116 | } | |
1117 | return SCM_NNULLP (args) ? 1 : 0; | |
1118 | } | |
1119 | #endif | |
1120 | ||
1121 | ||
1122 | \f | |
1123 | long scm_tc16_macro; | |
1124 | ||
1cc91f1b | 1125 | |
6dbd0af5 MD |
1126 | SCM |
1127 | scm_eval_args (l, env) | |
1128 | SCM l; | |
1129 | SCM env; | |
6dbd0af5 MD |
1130 | { |
1131 | SCM res = SCM_EOL, *lloc = &res; | |
1132 | while (SCM_NIMP (l)) | |
1133 | { | |
1134 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
1135 | lloc = &SCM_CDR (*lloc); | |
1136 | l = SCM_CDR (l); | |
1137 | } | |
1138 | return res; | |
1139 | } | |
0f2d19dd JB |
1140 | #endif /* !DEVAL */ |
1141 | ||
6dbd0af5 MD |
1142 | |
1143 | /* SECTION: This code is specific for the debugging support. One | |
1144 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1145 | * defined. | |
1146 | */ | |
1147 | ||
1148 | #ifndef DEVAL | |
1149 | ||
1150 | #define SCM_APPLY scm_apply | |
1151 | #define PREP_APPLY(proc, args) | |
1152 | #define ENTER_APPLY | |
1153 | #define RETURN(x) return x; | |
b7ff98dd MD |
1154 | #ifdef STACK_CHECKING |
1155 | #ifndef NO_CEVAL_STACK_CHECKING | |
1156 | #define EVAL_STACK_CHECKING | |
1157 | #endif | |
6dbd0af5 MD |
1158 | #endif |
1159 | ||
1160 | #else /* !DEVAL */ | |
1161 | ||
0f2d19dd JB |
1162 | #undef SCM_CEVAL |
1163 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1164 | #undef SCM_APPLY | |
1165 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1166 | #undef PREP_APPLY |
1167 | #define PREP_APPLY(p, l) \ | |
1168 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1169 | #undef ENTER_APPLY | |
1170 | #define ENTER_APPLY \ | |
1171 | {\ | |
b7ff98dd | 1172 | SCM_SET_ARGSREADY (debug);\ |
6dbd0af5 | 1173 | if (CHECK_APPLY)\ |
b7ff98dd | 1174 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1175 | {\ |
b7ff98dd MD |
1176 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
1177 | SCM_SET_TRACED_FRAME (debug);\ | |
1178 | if (SCM_CHEAPTRAPS_P)\ | |
6dbd0af5 MD |
1179 | {\ |
1180 | tmp = scm_make_debugobj ((scm_debug_frame *) &debug);\ | |
1181 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ | |
1182 | }\ | |
1183 | else\ | |
1184 | {\ | |
1185 | scm_make_cont (&tmp);\ | |
1186 | if (!setjmp (SCM_JMPBUF (tmp)))\ | |
1187 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ | |
1188 | }\ | |
1189 | }\ | |
1190 | } | |
0f2d19dd JB |
1191 | #undef RETURN |
1192 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1193 | #ifdef STACK_CHECKING |
1194 | #ifndef EVAL_STACK_CHECKING | |
1195 | #define EVAL_STACK_CHECKING | |
1196 | #endif | |
6dbd0af5 MD |
1197 | #endif |
1198 | ||
1199 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1200 | * *fixme*: Although efficiency is important here, this state variable | |
1201 | * should probably not be a global. It should be related to the | |
1202 | * current repl. | |
1203 | */ | |
1204 | ||
1cc91f1b JB |
1205 | |
1206 | SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env)); | |
0f2d19dd | 1207 | |
1646d37b | 1208 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1209 | * information stack frame. It is accessed very often from the |
1210 | * debugging evaluator, so it should probably not be indirectly | |
1211 | * addressed. Better to save and restore it from the current root at | |
1212 | * any stack swaps. | |
1213 | */ | |
1214 | ||
1646d37b MD |
1215 | #ifndef USE_THREADS |
1216 | scm_debug_frame *scm_last_debug_frame; | |
1217 | #endif | |
6dbd0af5 MD |
1218 | |
1219 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1220 | * stack frames at each real stack frame. | |
1221 | */ | |
1222 | ||
1223 | int scm_debug_eframe_size; | |
1224 | ||
b7ff98dd | 1225 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 MD |
1226 | |
1227 | scm_option scm_debug_opts[] = { | |
b7ff98dd MD |
1228 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1229 | "*Flyweight representation of the stack at traps." }, | |
1230 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1231 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1232 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1233 | "Record procedure names at definition." }, | |
1234 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1235 | "Display backtrace in anti-chronological order." }, | |
1236 | { SCM_OPTION_INTEGER, "frames", 2, | |
1237 | "Maximum number of tail-recursive frames in backtrace." }, | |
1238 | { SCM_OPTION_INTEGER, "depth", 80, "Maximal length of backtrace." }, | |
1239 | { SCM_OPTION_BOOLEAN, "backtrace", 0, | |
1240 | "Show backtrace on error (use debugging evaluator)." }, | |
1241 | { SCM_OPTION_BOOLEAN, "deval", 0, "Use the debugging evaluator." }, | |
1242 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (0 = no check)." } | |
6dbd0af5 MD |
1243 | }; |
1244 | ||
1245 | scm_option scm_evaluator_trap_table[] = { | |
b7ff98dd MD |
1246 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1247 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1248 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1249 | }; |
1250 | ||
1251 | SCM | |
1252 | scm_deval_args (l, env, lloc) | |
1253 | SCM l, env, *lloc; | |
0f2d19dd | 1254 | { |
6dbd0af5 | 1255 | SCM *res = lloc; |
0f2d19dd JB |
1256 | while (SCM_NIMP (l)) |
1257 | { | |
1258 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
1259 | lloc = &SCM_CDR (*lloc); | |
1260 | l = SCM_CDR (l); | |
1261 | } | |
6dbd0af5 | 1262 | return *res; |
0f2d19dd JB |
1263 | } |
1264 | ||
6dbd0af5 MD |
1265 | #endif /* !DEVAL */ |
1266 | ||
1267 | ||
1268 | /* SECTION: Some local definitions for the evaluator. | |
1269 | */ | |
1270 | ||
1271 | #ifndef DEVAL | |
1272 | #ifdef SCM_FLOATS | |
1273 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1274 | #else | |
1275 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1276 | #endif | |
1277 | #endif /* DEVAL */ | |
1278 | ||
1279 | ||
1280 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1281 | * three heads. This code is compiled twice. | |
1282 | */ | |
1283 | ||
0f2d19dd | 1284 | #if 0 |
1cc91f1b | 1285 | |
0f2d19dd JB |
1286 | SCM |
1287 | scm_ceval (x, env) | |
1288 | SCM x; | |
1289 | SCM env; | |
0f2d19dd JB |
1290 | {} |
1291 | #endif | |
1292 | #if 0 | |
1cc91f1b | 1293 | |
0f2d19dd JB |
1294 | SCM |
1295 | scm_deval (x, env) | |
1296 | SCM x; | |
1297 | SCM env; | |
0f2d19dd JB |
1298 | {} |
1299 | #endif | |
1300 | ||
1cc91f1b | 1301 | |
6dbd0af5 | 1302 | SCM |
0f2d19dd JB |
1303 | SCM_CEVAL (x, env) |
1304 | SCM x; | |
1305 | SCM env; | |
1306 | { | |
1307 | union | |
1308 | { | |
1309 | SCM *lloc; | |
1310 | SCM arg1; | |
1311 | } t; | |
6dbd0af5 MD |
1312 | SCM proc, arg2; |
1313 | #ifdef DEVAL | |
1314 | struct | |
1315 | { | |
1316 | scm_debug_frame *prev; | |
1317 | long status; | |
1318 | scm_debug_info vect[scm_debug_eframe_size]; | |
1319 | scm_debug_info *info; | |
1320 | } debug; | |
1646d37b | 1321 | debug.prev = scm_last_debug_frame; |
6dbd0af5 MD |
1322 | debug.status = scm_debug_eframe_size; |
1323 | debug.info = &debug.vect[0]; | |
1646d37b | 1324 | scm_last_debug_frame = (scm_debug_frame *) &debug; |
6dbd0af5 | 1325 | #endif |
b7ff98dd MD |
1326 | #ifdef EVAL_STACK_CHECKING |
1327 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1328 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1329 | { |
b7ff98dd | 1330 | #ifdef DEVAL |
6dbd0af5 MD |
1331 | debug.info->e.exp = x; |
1332 | debug.info->e.env = env; | |
b7ff98dd | 1333 | #endif |
6dbd0af5 MD |
1334 | scm_report_stack_overflow (); |
1335 | } | |
1336 | #endif | |
1337 | #ifdef DEVAL | |
1338 | goto start; | |
1339 | #endif | |
1340 | loopnoap: | |
1341 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1342 | loop: | |
1343 | #ifdef DEVAL | |
1344 | #if 0 /* This will probably never have any practical use ... */ | |
1345 | if (CHECK_EXIT) | |
1346 | { | |
b7ff98dd | 1347 | if (SINGLE_STEP || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 MD |
1348 | { |
1349 | SINGLE_STEP = 0; | |
b7ff98dd MD |
1350 | SCM_RESET_DEBUG_MODE; |
1351 | SCM_CLEAR_TRACED_FRAME (debug); | |
6dbd0af5 MD |
1352 | scm_make_cont (&t.arg1); |
1353 | if (!setjmp (SCM_JMPBUF (t.arg1))) | |
1354 | scm_ithrow (scm_i_exit_tail, scm_cons (t.arg1, SCM_EOL), 0); | |
1355 | } | |
1356 | } | |
1357 | nextframe: | |
1358 | #endif | |
b7ff98dd MD |
1359 | SCM_CLEAR_ARGSREADY (debug); |
1360 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 MD |
1361 | --debug.info; |
1362 | else if (++debug.info == (scm_debug_info *) &debug.info) | |
1363 | { | |
b7ff98dd | 1364 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1365 | debug.info -= 2; |
1366 | } | |
1367 | start: | |
1368 | debug.info->e.exp = x; | |
1369 | debug.info->e.env = env; | |
1370 | if (CHECK_ENTRY) | |
b7ff98dd | 1371 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1372 | { |
b7ff98dd MD |
1373 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1374 | SCM_SET_TAILREC (debug); | |
1375 | SCM_ENTER_FRAME_P = 0; | |
1376 | SCM_RESET_DEBUG_MODE; | |
1377 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
1378 | t.arg1 = scm_make_debugobj ((scm_debug_frame *) &debug); |
1379 | else | |
1380 | { | |
1381 | scm_make_cont (&t.arg1); | |
1382 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1383 | { | |
1384 | x = SCM_THROW_VALUE (t.arg1); | |
1385 | if (SCM_IMP (x)) | |
1386 | { | |
1387 | RETURN (x); | |
1388 | } | |
1389 | else | |
1390 | /* This gives the possibility for the debugger to | |
1391 | modify the source expression before evaluation. */ | |
1392 | goto dispatch; | |
1393 | } | |
1394 | } | |
1395 | scm_ithrow (scm_i_enter_frame, | |
1396 | scm_cons2 (t.arg1, tail, | |
1397 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1398 | 0); | |
1399 | } | |
1400 | dispatch: | |
1401 | #endif | |
0f2d19dd | 1402 | SCM_ASYNC_TICK; |
0f2d19dd JB |
1403 | switch (SCM_TYP7 (x)) |
1404 | { | |
1405 | case scm_tcs_symbols: | |
1406 | /* Only happens when called at top level. | |
1407 | */ | |
1408 | x = scm_cons (x, SCM_UNDEFINED); | |
1409 | goto retval; | |
1410 | ||
1411 | case (127 & SCM_IM_AND): | |
1412 | x = SCM_CDR (x); | |
1413 | t.arg1 = x; | |
1414 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1415 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1416 | { | |
1417 | RETURN (SCM_BOOL_F); | |
1418 | } | |
1419 | else | |
1420 | x = t.arg1; | |
6dbd0af5 | 1421 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1422 | goto carloop; |
1423 | ||
1424 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1425 | cdrxnoap: |
1426 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1427 | cdrxbegin: |
1428 | x = SCM_CDR (x); | |
1429 | ||
1430 | begin: | |
1431 | t.arg1 = x; | |
1432 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1433 | { | |
1434 | SIDEVAL (SCM_CAR (x), env); | |
1435 | x = t.arg1; | |
1436 | } | |
1437 | ||
1438 | carloop: /* scm_eval car of last form in list */ | |
1439 | if (SCM_NCELLP (SCM_CAR (x))) | |
1440 | { | |
1441 | x = SCM_CAR (x); | |
6dbd0af5 | 1442 | RETURN (SCM_IMP (x) ? EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1443 | } |
1444 | ||
1445 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1446 | { | |
1447 | retval: | |
6dbd0af5 | 1448 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1449 | } |
1450 | ||
1451 | x = SCM_CAR (x); | |
1452 | goto loop; /* tail recurse */ | |
1453 | ||
1454 | ||
1455 | case (127 & SCM_IM_CASE): | |
1456 | x = SCM_CDR (x); | |
1457 | t.arg1 = EVALCAR (x, env); | |
1458 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1459 | { | |
1460 | proc = SCM_CAR (x); | |
1461 | if (scm_i_else == SCM_CAR (proc)) | |
1462 | { | |
1463 | x = SCM_CDR (proc); | |
6dbd0af5 | 1464 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1465 | goto begin; |
1466 | } | |
1467 | proc = SCM_CAR (proc); | |
1468 | while (SCM_NIMP (proc)) | |
1469 | { | |
1470 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1471 | { | |
1472 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1473 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1474 | goto begin; |
1475 | } | |
1476 | proc = SCM_CDR (proc); | |
1477 | } | |
1478 | } | |
6dbd0af5 | 1479 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1480 | |
1481 | ||
1482 | case (127 & SCM_IM_COND): | |
1483 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1484 | { | |
1485 | proc = SCM_CAR (x); | |
1486 | t.arg1 = EVALCAR (proc, env); | |
1487 | if (SCM_NFALSEP (t.arg1)) | |
1488 | { | |
1489 | x = SCM_CDR (proc); | |
6dbd0af5 | 1490 | if SCM_NULLP (x) |
0f2d19dd | 1491 | { |
6dbd0af5 | 1492 | RETURN (t.arg1) |
0f2d19dd JB |
1493 | } |
1494 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1495 | { |
1496 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1497 | goto begin; | |
1498 | } | |
0f2d19dd JB |
1499 | proc = SCM_CDR (x); |
1500 | proc = EVALCAR (proc, env); | |
1501 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1502 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1503 | ENTER_APPLY; | |
0f2d19dd JB |
1504 | goto evap1; |
1505 | } | |
1506 | } | |
6dbd0af5 | 1507 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1508 | |
1509 | ||
1510 | case (127 & SCM_IM_DO): | |
1511 | x = SCM_CDR (x); | |
1512 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1513 | t.arg1 = SCM_EOL; /* values */ | |
1514 | while (SCM_NIMP (proc)) | |
1515 | { | |
1516 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1517 | proc = SCM_CDR (proc); | |
1518 | } | |
e2806c10 | 1519 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1520 | x = SCM_CDR (SCM_CDR (x)); |
1521 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1522 | { | |
1523 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1524 | { | |
1525 | t.arg1 = SCM_CAR (proc); /* body */ | |
1526 | SIDEVAL (t.arg1, env); | |
1527 | } | |
1528 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1529 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1530 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1531 | } |
1532 | x = SCM_CDR (proc); | |
1533 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1534 | RETURN (SCM_UNSPECIFIED); |
1535 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1536 | goto begin; |
1537 | ||
1538 | ||
1539 | case (127 & SCM_IM_IF): | |
1540 | x = SCM_CDR (x); | |
1541 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1542 | x = SCM_CDR (x); | |
1543 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1544 | { | |
1545 | RETURN (SCM_UNSPECIFIED); | |
1546 | } | |
6dbd0af5 | 1547 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1548 | goto carloop; |
1549 | ||
1550 | ||
1551 | case (127 & SCM_IM_LET): | |
1552 | x = SCM_CDR (x); | |
1553 | proc = SCM_CAR (SCM_CDR (x)); | |
1554 | t.arg1 = SCM_EOL; | |
1555 | do | |
1556 | { | |
1557 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1558 | } | |
1559 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1560 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1561 | x = SCM_CDR (x); |
6dbd0af5 | 1562 | goto cdrxnoap; |
0f2d19dd JB |
1563 | |
1564 | ||
1565 | case (127 & SCM_IM_LETREC): | |
1566 | x = SCM_CDR (x); | |
e2806c10 | 1567 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1568 | x = SCM_CDR (x); |
1569 | proc = SCM_CAR (x); | |
1570 | t.arg1 = SCM_EOL; | |
1571 | do | |
1572 | { | |
1573 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1574 | } | |
1575 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
1576 | SCM_CDR (SCM_CAR (env)) = t.arg1; | |
6dbd0af5 | 1577 | goto cdrxnoap; |
0f2d19dd JB |
1578 | |
1579 | ||
1580 | case (127 & SCM_IM_LETSTAR): | |
1581 | x = SCM_CDR (x); | |
1582 | proc = SCM_CAR (x); | |
1583 | if (SCM_IMP (proc)) | |
1584 | { | |
e2806c10 | 1585 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1586 | goto cdrxnoap; |
0f2d19dd JB |
1587 | } |
1588 | do | |
1589 | { | |
1590 | t.arg1 = SCM_CAR (proc); | |
1591 | proc = SCM_CDR (proc); | |
e2806c10 | 1592 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1593 | } |
1594 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1595 | goto cdrxnoap; |
0f2d19dd JB |
1596 | |
1597 | case (127 & SCM_IM_OR): | |
1598 | x = SCM_CDR (x); | |
1599 | t.arg1 = x; | |
1600 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1601 | { | |
1602 | x = EVALCAR (x, env); | |
1603 | if (SCM_NFALSEP (x)) | |
1604 | { | |
1605 | RETURN (x); | |
1606 | } | |
1607 | x = t.arg1; | |
1608 | } | |
6dbd0af5 | 1609 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1610 | goto carloop; |
1611 | ||
1612 | ||
1613 | case (127 & SCM_IM_LAMBDA): | |
1614 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1615 | ||
1616 | ||
1617 | case (127 & SCM_IM_QUOTE): | |
1618 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1619 | ||
1620 | ||
1621 | case (127 & SCM_IM_SET): | |
0f2d19dd JB |
1622 | x = SCM_CDR (x); |
1623 | proc = SCM_CAR (x); | |
6dbd0af5 | 1624 | switch (7 & (int) proc) |
0f2d19dd JB |
1625 | { |
1626 | case 0: | |
1627 | t.lloc = scm_lookupcar (x, env); | |
1628 | break; | |
1629 | case 1: | |
1630 | t.lloc = &SCM_GLOC_VAL (proc); | |
1631 | break; | |
1632 | #ifdef MEMOIZE_LOCALS | |
1633 | case 4: | |
1634 | t.lloc = scm_ilookup (proc, env); | |
1635 | break; | |
1636 | #endif | |
1637 | } | |
1638 | x = SCM_CDR (x); | |
1639 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1640 | #ifdef SICP |
1641 | RETURN (*t.lloc); | |
1642 | #else | |
1643 | RETURN (SCM_UNSPECIFIED); | |
1644 | #endif | |
1645 | ||
1646 | ||
1647 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1648 | x = SCM_CDR (x); | |
1649 | proc = SCM_CAR (x); | |
1650 | x = SCM_CDR (x); | |
1651 | x = evalcar (x, env); | |
6dbd0af5 | 1652 | #ifdef DEBUG_EXTENSIONS |
b7ff98dd | 1653 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x) && SCM_CLOSUREP (x)) |
6dbd0af5 MD |
1654 | scm_set_procedure_property_x (x, scm_i_name, proc); |
1655 | #endif | |
0f2d19dd JB |
1656 | env = SCM_CAR (env); |
1657 | SCM_DEFER_INTS; | |
1658 | SCM_CAR (env) = scm_cons (proc, SCM_CAR (env)); | |
1659 | SCM_CDR (env) = scm_cons (x, SCM_CDR (env)); | |
1660 | SCM_ALLOW_INTS; | |
1661 | RETURN (SCM_UNSPECIFIED); | |
1662 | ||
1663 | ||
1664 | ||
1665 | /* new syntactic forms go here. */ | |
1666 | case (127 & SCM_MAKISYM (0)): | |
1667 | proc = SCM_CAR (x); | |
1668 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1669 | switch SCM_ISYMNUM (proc) | |
1670 | { | |
1671 | #if 0 | |
1672 | case (SCM_ISYMNUM (IM_VREF)): | |
1673 | { | |
1674 | SCM var; | |
1675 | var = SCM_CAR (SCM_CDR (x)); | |
1676 | RETURN (SCM_CDR(var)); | |
1677 | } | |
1678 | case (SCM_ISYMNUM (IM_VSET)): | |
1679 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1680 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1681 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1682 | #endif |
1683 | ||
1684 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1685 | proc = SCM_CDR (x); | |
1686 | proc = EVALCAR (proc, env); | |
1687 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1688 | if (SCM_CLOSUREP (proc)) | |
1689 | { | |
6dbd0af5 | 1690 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1691 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1692 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1693 | #ifdef DEVAL |
1694 | debug.info->a.args = t.arg1; | |
1695 | #endif | |
0f2d19dd JB |
1696 | #ifndef RECKLESS |
1697 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) | |
1698 | goto wrongnumargs; | |
1699 | #endif | |
e2806c10 | 1700 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), t.arg1, SCM_ENV (proc)); |
0f2d19dd JB |
1701 | x = SCM_CODE (proc); |
1702 | goto cdrxbegin; | |
1703 | } | |
1704 | proc = scm_i_apply; | |
1705 | goto evapply; | |
1706 | ||
1707 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1708 | scm_make_cont (&t.arg1); | |
1709 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1710 | { | |
1711 | SCM val; | |
1712 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1713 | RETURN (val); |
0f2d19dd JB |
1714 | } |
1715 | proc = SCM_CDR (x); | |
1716 | proc = evalcar (proc, env); | |
1717 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1718 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1719 | ENTER_APPLY; | |
0f2d19dd JB |
1720 | goto evap1; |
1721 | ||
1722 | default: | |
1723 | goto badfun; | |
1724 | } | |
1725 | ||
1726 | default: | |
1727 | proc = x; | |
1728 | badfun: | |
f5bf2977 | 1729 | /* scm_everr (x, env,...) */ |
01f61221 | 1730 | scm_error (scm_misc_error_key, |
f5bf2977 GH |
1731 | NULL, |
1732 | "Wrong type to apply: %S", | |
1733 | scm_listify (proc, SCM_UNDEFINED), | |
1734 | SCM_BOOL_F); | |
0f2d19dd JB |
1735 | case scm_tc7_vector: |
1736 | case scm_tc7_wvect: | |
1737 | case scm_tc7_bvect: | |
1738 | case scm_tc7_byvect: | |
1739 | case scm_tc7_svect: | |
1740 | case scm_tc7_ivect: | |
1741 | case scm_tc7_uvect: | |
1742 | case scm_tc7_fvect: | |
1743 | case scm_tc7_dvect: | |
1744 | case scm_tc7_cvect: | |
1745 | #ifdef LONGLONGS | |
1746 | case scm_tc7_llvect: | |
1747 | #endif | |
1748 | case scm_tc7_string: | |
1749 | case scm_tc7_mb_string: | |
1750 | case scm_tc7_substring: | |
1751 | case scm_tc7_mb_substring: | |
1752 | case scm_tc7_smob: | |
1753 | case scm_tcs_closures: | |
1754 | case scm_tcs_subrs: | |
1755 | RETURN (x); | |
1756 | ||
1757 | #ifdef MEMOIZE_LOCALS | |
1758 | case (127 & SCM_ILOC00): | |
1759 | proc = *scm_ilookup (SCM_CAR (x), env); | |
1760 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1761 | #ifndef RECKLESS | |
1762 | #ifdef CAUTIOUS | |
1763 | goto checkargs; | |
1764 | #endif | |
1765 | #endif | |
1766 | break; | |
1767 | #endif /* ifdef MEMOIZE_LOCALS */ | |
1768 | ||
1769 | ||
1770 | case scm_tcs_cons_gloc: | |
1771 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
1772 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1773 | #ifndef RECKLESS | |
1774 | #ifdef CAUTIOUS | |
1775 | goto checkargs; | |
1776 | #endif | |
1777 | #endif | |
1778 | break; | |
1779 | ||
1780 | ||
1781 | case scm_tcs_cons_nimcar: | |
1782 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1783 | { | |
1784 | proc = *scm_lookupcar (x, env); | |
1785 | if (SCM_IMP (proc)) | |
1786 | { | |
1787 | unmemocar (x, env); | |
1788 | goto badfun; | |
1789 | } | |
1790 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1791 | { | |
1792 | unmemocar (x, env); | |
1793 | ||
1794 | handle_a_macro: | |
1795 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1796 | switch ((int) (SCM_CAR (proc) >> 16)) | |
1797 | { | |
1798 | case 2: | |
1799 | if (scm_ilength (t.arg1) <= 0) | |
1800 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
1801 | #ifdef DEVAL |
1802 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
1803 | { | |
1804 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ | |
1805 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
1806 | /* Prevent memoizing result of define macro */ | |
1807 | { | |
1808 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1809 | scm_set_source_properties_x (debug.info->e.exp, | |
1810 | scm_source_properties (x)); | |
1811 | } | |
1812 | #endif | |
1813 | SCM_DEFER_INTS; | |
1814 | SCM_CAR (x) = SCM_CAR (t.arg1); | |
1815 | SCM_CDR (x) = SCM_CDR (t.arg1); | |
1816 | SCM_ALLOW_INTS; | |
1817 | goto dispatch; | |
1818 | } | |
1819 | /* Prevent memoizing of debug info expression. */ | |
1820 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1821 | scm_set_source_properties_x (debug.info->e.exp, | |
1822 | scm_source_properties (x)); | |
1823 | #endif | |
0f2d19dd JB |
1824 | SCM_DEFER_INTS; |
1825 | SCM_CAR (x) = SCM_CAR (t.arg1); | |
1826 | SCM_CDR (x) = SCM_CDR (t.arg1); | |
1827 | SCM_ALLOW_INTS; | |
6dbd0af5 | 1828 | goto loopnoap; |
0f2d19dd JB |
1829 | case 1: |
1830 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 1831 | goto loopnoap; |
0f2d19dd JB |
1832 | case 0: |
1833 | RETURN (t.arg1); | |
1834 | } | |
1835 | } | |
1836 | } | |
1837 | else | |
1838 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
1839 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1840 | #ifndef RECKLESS | |
1841 | #ifdef CAUTIOUS | |
1842 | checkargs: | |
1843 | #endif | |
1844 | if (SCM_CLOSUREP (proc)) | |
1845 | { | |
1846 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
1847 | t.arg1 = SCM_CDR (x); | |
1848 | while (SCM_NIMP (arg2)) | |
1849 | { | |
1850 | if (SCM_NCONSP (arg2)) | |
1851 | goto evapply; | |
1852 | if (SCM_IMP (t.arg1)) | |
1853 | goto umwrongnumargs; | |
1854 | arg2 = SCM_CDR (arg2); | |
1855 | t.arg1 = SCM_CDR (t.arg1); | |
1856 | } | |
1857 | if (SCM_NNULLP (t.arg1)) | |
1858 | goto umwrongnumargs; | |
1859 | } | |
1860 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1861 | goto handle_a_macro; | |
1862 | #endif | |
1863 | } | |
1864 | ||
1865 | ||
6dbd0af5 MD |
1866 | evapply: |
1867 | PREP_APPLY (proc, SCM_EOL); | |
1868 | if (SCM_NULLP (SCM_CDR (x))) { | |
1869 | ENTER_APPLY; | |
0f2d19dd JB |
1870 | switch (SCM_TYP7 (proc)) |
1871 | { /* no arguments given */ | |
1872 | case scm_tc7_subr_0: | |
1873 | RETURN (SCM_SUBRF (proc) ()); | |
1874 | case scm_tc7_subr_1o: | |
1875 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
1876 | case scm_tc7_lsubr: | |
1877 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
1878 | case scm_tc7_rpsubr: | |
1879 | RETURN (SCM_BOOL_T); | |
1880 | case scm_tc7_asubr: | |
1881 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 1882 | #ifdef CCLO |
0f2d19dd JB |
1883 | case scm_tc7_cclo: |
1884 | t.arg1 = proc; | |
1885 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
1886 | #ifdef DEVAL |
1887 | debug.info->a.proc = proc; | |
1888 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
1889 | #endif | |
0f2d19dd | 1890 | goto evap1; |
6dbd0af5 | 1891 | #endif |
0f2d19dd JB |
1892 | case scm_tcs_closures: |
1893 | x = SCM_CODE (proc); | |
e2806c10 | 1894 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd JB |
1895 | goto cdrxbegin; |
1896 | case scm_tc7_contin: | |
1897 | case scm_tc7_subr_1: | |
1898 | case scm_tc7_subr_2: | |
1899 | case scm_tc7_subr_2o: | |
1900 | case scm_tc7_cxr: | |
1901 | case scm_tc7_subr_3: | |
1902 | case scm_tc7_lsubr_2: | |
1903 | umwrongnumargs: | |
1904 | unmemocar (x, env); | |
1905 | wrongnumargs: | |
f5bf2977 GH |
1906 | /* scm_everr (x, env,...) */ |
1907 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
1908 | default: |
1909 | /* handle macros here */ | |
1910 | goto badfun; | |
1911 | } | |
6dbd0af5 | 1912 | } |
0f2d19dd JB |
1913 | |
1914 | /* must handle macros by here */ | |
1915 | x = SCM_CDR (x); | |
1916 | #ifdef CAUTIOUS | |
1917 | if (SCM_IMP (x)) | |
1918 | goto wrongnumargs; | |
1919 | #endif | |
1920 | t.arg1 = EVALCAR (x, env); | |
6dbd0af5 MD |
1921 | #ifdef DEVAL |
1922 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
1923 | #endif | |
0f2d19dd JB |
1924 | x = SCM_CDR (x); |
1925 | if (SCM_NULLP (x)) | |
1926 | { | |
6dbd0af5 | 1927 | ENTER_APPLY; |
0f2d19dd JB |
1928 | evap1: |
1929 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 1930 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
1931 | case scm_tc7_subr_2o: |
1932 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
1933 | case scm_tc7_subr_1: | |
1934 | case scm_tc7_subr_1o: | |
1935 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
1936 | case scm_tc7_cxr: | |
1937 | #ifdef SCM_FLOATS | |
1938 | if (SCM_SUBRF (proc)) | |
1939 | { | |
1940 | if (SCM_INUMP (t.arg1)) | |
1941 | { | |
1942 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
1943 | 0.0)); | |
1944 | } | |
1945 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
1946 | if (SCM_REALP (t.arg1)) | |
1947 | { | |
1948 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
1949 | } | |
1950 | #ifdef SCM_BIGDIG | |
1951 | if (SCM_BIGP (t.arg1)) | |
1952 | { | |
1953 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
1954 | } | |
1955 | #endif | |
1956 | floerr: | |
1957 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
1958 | } | |
1959 | #endif | |
1960 | proc = (SCM) SCM_SNAME (proc); | |
1961 | { | |
1962 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
1963 | while ('c' != *--chrs) | |
1964 | { | |
1965 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
1966 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
1967 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
1968 | } | |
1969 | RETURN (t.arg1); | |
1970 | } | |
1971 | case scm_tc7_rpsubr: | |
1972 | RETURN (SCM_BOOL_T); | |
1973 | case scm_tc7_asubr: | |
1974 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
1975 | case scm_tc7_lsubr: | |
1976 | #ifdef DEVAL | |
6dbd0af5 | 1977 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
1978 | #else |
1979 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
1980 | #endif | |
6dbd0af5 | 1981 | #ifdef CCLO |
0f2d19dd JB |
1982 | case scm_tc7_cclo: |
1983 | arg2 = t.arg1; | |
1984 | t.arg1 = proc; | |
1985 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
1986 | #ifdef DEVAL |
1987 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
1988 | debug.info->a.proc = proc; | |
1989 | #endif | |
0f2d19dd | 1990 | goto evap2; |
6dbd0af5 | 1991 | #endif |
0f2d19dd JB |
1992 | case scm_tcs_closures: |
1993 | x = SCM_CODE (proc); | |
1994 | #ifdef DEVAL | |
e2806c10 | 1995 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 1996 | #else |
e2806c10 | 1997 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
1998 | #endif |
1999 | goto cdrxbegin; | |
2000 | case scm_tc7_contin: | |
2001 | scm_call_continuation (proc, t.arg1); | |
2002 | case scm_tc7_subr_2: | |
2003 | case scm_tc7_subr_0: | |
2004 | case scm_tc7_subr_3: | |
2005 | case scm_tc7_lsubr_2: | |
2006 | goto wrongnumargs; | |
2007 | default: | |
2008 | goto badfun; | |
2009 | } | |
2010 | } | |
2011 | #ifdef CAUTIOUS | |
2012 | if (SCM_IMP (x)) | |
2013 | goto wrongnumargs; | |
2014 | #endif | |
2015 | { /* have two or more arguments */ | |
2016 | arg2 = EVALCAR (x, env); | |
6dbd0af5 MD |
2017 | #ifdef DEVAL |
2018 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2019 | #endif | |
0f2d19dd JB |
2020 | x = SCM_CDR (x); |
2021 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2022 | ENTER_APPLY; |
0f2d19dd JB |
2023 | #ifdef CCLO |
2024 | evap2: | |
2025 | #endif | |
6dbd0af5 MD |
2026 | switch (SCM_TYP7 (proc)) |
2027 | { /* have two arguments */ | |
2028 | case scm_tc7_subr_2: | |
2029 | case scm_tc7_subr_2o: | |
2030 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2031 | case scm_tc7_lsubr: | |
0f2d19dd | 2032 | #ifdef DEVAL |
6dbd0af5 MD |
2033 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2034 | #else | |
2035 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2036 | #endif |
6dbd0af5 MD |
2037 | case scm_tc7_lsubr_2: |
2038 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2039 | case scm_tc7_rpsubr: | |
2040 | case scm_tc7_asubr: | |
2041 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2042 | #ifdef CCLO | |
2043 | cclon: | |
2044 | case scm_tc7_cclo: | |
0f2d19dd | 2045 | #ifdef DEVAL |
6dbd0af5 MD |
2046 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2047 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2048 | #else |
6dbd0af5 MD |
2049 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2050 | scm_cons2 (t.arg1, arg2, | |
2051 | scm_cons (scm_eval_args (x, env), SCM_EOL)))); | |
0f2d19dd | 2052 | #endif |
6dbd0af5 MD |
2053 | /* case scm_tc7_cclo: |
2054 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2055 | arg2 = t.arg1; | |
2056 | t.arg1 = proc; | |
2057 | proc = SCM_CCLO_SUBR(proc); | |
2058 | goto evap3; */ | |
2059 | #endif | |
2060 | case scm_tc7_subr_0: | |
2061 | case scm_tc7_cxr: | |
2062 | case scm_tc7_subr_1o: | |
2063 | case scm_tc7_subr_1: | |
2064 | case scm_tc7_subr_3: | |
2065 | case scm_tc7_contin: | |
2066 | goto wrongnumargs; | |
2067 | default: | |
2068 | goto badfun; | |
2069 | case scm_tcs_closures: | |
0f2d19dd | 2070 | #ifdef DEVAL |
e2806c10 | 2071 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2072 | #else |
e2806c10 | 2073 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd | 2074 | #endif |
6dbd0af5 MD |
2075 | x = SCM_CODE (proc); |
2076 | goto cdrxbegin; | |
2077 | } | |
0f2d19dd JB |
2078 | } |
2079 | #ifdef DEVAL | |
6dbd0af5 MD |
2080 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
2081 | scm_deval_args (x, env, &SCM_CDR (SCM_CDR (debug.info->a.args)))); | |
0f2d19dd | 2082 | #endif |
6dbd0af5 MD |
2083 | ENTER_APPLY; |
2084 | switch (SCM_TYP7 (proc)) | |
2085 | { /* have 3 or more arguments */ | |
0f2d19dd | 2086 | #ifdef DEVAL |
6dbd0af5 MD |
2087 | case scm_tc7_subr_3: |
2088 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2089 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CAR (SCM_CDR (SCM_CDR (debug.info->a.args))))); | |
2090 | case scm_tc7_asubr: | |
2091 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2092 | while SCM_NIMP(x) { | |
2093 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2094 | x = SCM_CDR(x); | |
2095 | } | |
2096 | RETURN (t.arg1) */ | |
2097 | case scm_tc7_rpsubr: | |
2098 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, SCM_CDR (SCM_CDR (debug.info->a.args)), SCM_EOL))) | |
2099 | case scm_tc7_lsubr_2: | |
2100 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
2101 | case scm_tc7_lsubr: | |
2102 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2103 | #ifdef CCLO |
6dbd0af5 MD |
2104 | case scm_tc7_cclo: |
2105 | goto cclon; | |
0f2d19dd | 2106 | #endif |
6dbd0af5 | 2107 | case scm_tcs_closures: |
b7ff98dd | 2108 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2109 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2110 | debug.info->a.args, |
2111 | SCM_ENV (proc)); | |
2112 | x = SCM_CODE (proc); | |
2113 | goto cdrxbegin; | |
2114 | #else /* DEVAL */ | |
2115 | case scm_tc7_subr_3: | |
2116 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2117 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2118 | case scm_tc7_asubr: | |
2119 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2120 | while SCM_NIMP(x) { | |
2121 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2122 | x = SCM_CDR(x); | |
2123 | } | |
2124 | RETURN (t.arg1) */ | |
2125 | case scm_tc7_rpsubr: | |
2126 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, scm_eval_args (x, env), SCM_EOL))); | |
2127 | case scm_tc7_lsubr_2: | |
2128 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env))); | |
2129 | case scm_tc7_lsubr: | |
2130 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)))); | |
0f2d19dd | 2131 | #ifdef CCLO |
6dbd0af5 MD |
2132 | case scm_tc7_cclo: |
2133 | goto cclon; | |
0f2d19dd | 2134 | #endif |
6dbd0af5 MD |
2135 | case scm_tcs_closures: |
2136 | #ifdef DEVAL | |
b7ff98dd | 2137 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2138 | #endif |
e2806c10 | 2139 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2140 | scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)), |
2141 | SCM_ENV (proc)); | |
2142 | x = SCM_CODE (proc); | |
2143 | goto cdrxbegin; | |
0f2d19dd | 2144 | #endif /* DEVAL */ |
6dbd0af5 MD |
2145 | case scm_tc7_subr_2: |
2146 | case scm_tc7_subr_1o: | |
2147 | case scm_tc7_subr_2o: | |
2148 | case scm_tc7_subr_0: | |
2149 | case scm_tc7_cxr: | |
2150 | case scm_tc7_subr_1: | |
2151 | case scm_tc7_contin: | |
2152 | goto wrongnumargs; | |
2153 | default: | |
2154 | goto badfun; | |
2155 | } | |
0f2d19dd JB |
2156 | } |
2157 | #ifdef DEVAL | |
6dbd0af5 MD |
2158 | exit: |
2159 | if (CHECK_EXIT) | |
b7ff98dd | 2160 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2161 | { |
b7ff98dd MD |
2162 | SCM_EXIT_FRAME_P = 0; |
2163 | SCM_RESET_DEBUG_MODE; | |
2164 | SCM_CLEAR_TRACED_FRAME (debug); | |
2165 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
2166 | t.arg1 = scm_make_debugobj ((scm_debug_frame *) &debug); |
2167 | else | |
2168 | { | |
2169 | scm_make_cont (&t.arg1); | |
2170 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
2171 | { | |
2172 | proc = SCM_THROW_VALUE (t.arg1); | |
2173 | goto ret; | |
2174 | } | |
2175 | } | |
2176 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2177 | } | |
2178 | ret: | |
1646d37b | 2179 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2180 | return proc; |
2181 | #endif | |
2182 | } | |
2183 | ||
6dbd0af5 MD |
2184 | |
2185 | /* SECTION: This code is compiled once. | |
2186 | */ | |
2187 | ||
0f2d19dd JB |
2188 | #ifndef DEVAL |
2189 | ||
2190 | SCM_PROC(s_procedure_documentation, "procedure-documentation", 1, 0, 0, scm_procedure_documentation); | |
1cc91f1b | 2191 | |
0f2d19dd JB |
2192 | SCM |
2193 | scm_procedure_documentation (proc) | |
2194 | SCM proc; | |
0f2d19dd JB |
2195 | { |
2196 | SCM code; | |
2197 | SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc) && SCM_NIMP (proc) && SCM_TYP7 (proc) != scm_tc7_contin, | |
2198 | proc, SCM_ARG1, s_procedure_documentation); | |
2199 | switch (SCM_TYP7 (proc)) | |
2200 | { | |
2201 | case scm_tcs_closures: | |
2202 | code = SCM_CDR (SCM_CODE (proc)); | |
2203 | if (SCM_IMP (SCM_CDR (code))) | |
2204 | return SCM_BOOL_F; | |
2205 | code = SCM_CAR (code); | |
2206 | if (SCM_IMP (code)) | |
2207 | return SCM_BOOL_F; | |
2208 | if (SCM_STRINGP (code)) | |
2209 | return code; | |
2210 | default: | |
2211 | return SCM_BOOL_F; | |
2212 | /* | |
2213 | case scm_tcs_subrs: | |
2214 | #ifdef CCLO | |
2215 | case scm_tc7_cclo: | |
2216 | #endif | |
2217 | */ | |
2218 | } | |
2219 | } | |
2220 | ||
b145c172 JB |
2221 | /* This code processes the 'arg ...' parameters to apply. |
2222 | ||
2223 | (apply PROC ARG1 ... ARGS) | |
2224 | ||
2225 | The ARG1 ... arguments are consed on to the front of ARGS (which | |
2226 | must be a list), and then PROC is applied to the elements of the | |
2227 | result. apply:nconc2last takes care of building the list of | |
2228 | arguments, given (ARG1 ... ARGS). | |
2229 | ||
2230 | apply:nconc2last destroys its argument. On that topic, this code | |
2231 | came into my care with the following beautifully cryptic comment on | |
2232 | that topic: "This will only screw you if you do (scm_apply | |
2233 | scm_apply '( ... ))" If you know what they're referring to, send | |
2234 | me a patch to this comment. */ | |
2235 | ||
0f2d19dd | 2236 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); |
1cc91f1b | 2237 | |
0f2d19dd JB |
2238 | SCM |
2239 | scm_nconc2last (lst) | |
2240 | SCM lst; | |
0f2d19dd JB |
2241 | { |
2242 | SCM *lloc; | |
b145c172 | 2243 | SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2244 | lloc = &lst; |
2245 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
b145c172 JB |
2246 | lloc = &SCM_CDR (*lloc); |
2247 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last); | |
0f2d19dd JB |
2248 | *lloc = SCM_CAR (*lloc); |
2249 | return lst; | |
2250 | } | |
2251 | ||
2252 | #endif /* !DEVAL */ | |
2253 | ||
6dbd0af5 MD |
2254 | |
2255 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2256 | * It is compiled twice. | |
2257 | */ | |
2258 | ||
0f2d19dd | 2259 | #if 0 |
1cc91f1b | 2260 | |
0f2d19dd JB |
2261 | SCM |
2262 | scm_apply (proc, arg1, args) | |
2263 | SCM proc; | |
2264 | SCM arg1; | |
2265 | SCM args; | |
0f2d19dd JB |
2266 | {} |
2267 | #endif | |
2268 | ||
2269 | #if 0 | |
1cc91f1b | 2270 | |
0f2d19dd JB |
2271 | SCM |
2272 | scm_dapply (proc, arg1, args) | |
2273 | SCM proc; | |
2274 | SCM arg1; | |
2275 | SCM args; | |
0f2d19dd JB |
2276 | {} |
2277 | #endif | |
2278 | ||
1cc91f1b | 2279 | |
0f2d19dd JB |
2280 | SCM |
2281 | SCM_APPLY (proc, arg1, args) | |
2282 | SCM proc; | |
2283 | SCM arg1; | |
2284 | SCM args; | |
0f2d19dd JB |
2285 | { |
2286 | #ifdef DEBUG_EXTENSIONS | |
2287 | #ifdef DEVAL | |
6dbd0af5 | 2288 | scm_debug_frame debug; |
1646d37b | 2289 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2290 | debug.status = SCM_APPLYFRAME; |
6dbd0af5 MD |
2291 | debug.vect[0].a.proc = proc; |
2292 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2293 | scm_last_debug_frame = &debug; |
0f2d19dd | 2294 | #else |
b7ff98dd | 2295 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2296 | return scm_dapply (proc, arg1, args); |
2297 | #endif | |
2298 | #endif | |
2299 | ||
2300 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
2301 | if (SCM_NULLP (args)) | |
2302 | { | |
2303 | if (SCM_NULLP (arg1)) | |
2304 | arg1 = SCM_UNDEFINED; | |
2305 | else | |
2306 | { | |
2307 | args = SCM_CDR (arg1); | |
2308 | arg1 = SCM_CAR (arg1); | |
2309 | } | |
2310 | } | |
2311 | else | |
2312 | { | |
2313 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ | |
2314 | args = scm_nconc2last (args); | |
2315 | } | |
0f2d19dd | 2316 | #ifdef DEVAL |
6dbd0af5 | 2317 | debug.vect[0].a.args = scm_cons (arg1, args); |
b7ff98dd | 2318 | if (SCM_ENTER_FRAME_P) |
6dbd0af5 MD |
2319 | { |
2320 | SCM tmp; | |
b7ff98dd MD |
2321 | SCM_ENTER_FRAME_P = 0; |
2322 | SCM_RESET_DEBUG_MODE; | |
2323 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
2324 | tmp = scm_make_debugobj ((scm_debug_frame *) &debug); |
2325 | else | |
2326 | { | |
2327 | scm_make_cont (&tmp); | |
2328 | if (setjmp (SCM_JMPBUF (tmp))) | |
2329 | goto entap; | |
2330 | } | |
2331 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2332 | } | |
2333 | entap: | |
2334 | ENTER_APPLY; | |
2335 | #endif | |
2336 | #ifdef CCLO | |
2337 | tail: | |
0f2d19dd JB |
2338 | #endif |
2339 | switch (SCM_TYP7 (proc)) | |
2340 | { | |
2341 | case scm_tc7_subr_2o: | |
2342 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2343 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2344 | case scm_tc7_subr_2: | |
2345 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (args)), wrongnumargs); | |
2346 | args = SCM_CAR (args); | |
2347 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2348 | case scm_tc7_subr_0: | |
2349 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2350 | RETURN (SCM_SUBRF (proc) ()) | |
2351 | case scm_tc7_subr_1: | |
2352 | case scm_tc7_subr_1o: | |
2353 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2354 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2355 | case scm_tc7_cxr: | |
2356 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2357 | #ifdef SCM_FLOATS | |
2358 | if (SCM_SUBRF (proc)) | |
2359 | { | |
6dbd0af5 MD |
2360 | if (SCM_INUMP (arg1)) |
2361 | { | |
2362 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2363 | } | |
0f2d19dd | 2364 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2365 | if (SCM_REALP (arg1)) |
2366 | { | |
2367 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2368 | } | |
0f2d19dd JB |
2369 | #ifdef SCM_BIGDIG |
2370 | if SCM_BIGP | |
2371 | (arg1) | |
2372 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) | |
2373 | #endif | |
2374 | floerr: | |
2375 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2376 | } | |
2377 | #endif | |
2378 | proc = (SCM) SCM_SNAME (proc); | |
2379 | { | |
2380 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2381 | while ('c' != *--chrs) | |
2382 | { | |
2383 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2384 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2385 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2386 | } | |
2387 | RETURN (arg1) | |
2388 | } | |
2389 | case scm_tc7_subr_3: | |
2390 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2391 | case scm_tc7_lsubr: | |
2392 | #ifdef DEVAL | |
6dbd0af5 | 2393 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2394 | #else |
2395 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2396 | #endif | |
2397 | case scm_tc7_lsubr_2: | |
2398 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2399 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2400 | case scm_tc7_asubr: | |
2401 | if (SCM_NULLP (args)) | |
2402 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2403 | while (SCM_NIMP (args)) | |
2404 | { | |
2405 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2406 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2407 | args = SCM_CDR (args); | |
2408 | } | |
2409 | RETURN (arg1); | |
2410 | case scm_tc7_rpsubr: | |
2411 | if (SCM_NULLP (args)) | |
2412 | RETURN (SCM_BOOL_T); | |
2413 | while (SCM_NIMP (args)) | |
2414 | { | |
2415 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2416 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2417 | RETURN (SCM_BOOL_F); | |
2418 | arg1 = SCM_CAR (args); | |
2419 | args = SCM_CDR (args); | |
2420 | } | |
2421 | RETURN (SCM_BOOL_T); | |
2422 | case scm_tcs_closures: | |
2423 | #ifdef DEVAL | |
6dbd0af5 | 2424 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2425 | #else |
2426 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2427 | #endif | |
2428 | #ifndef RECKLESS | |
2429 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) | |
2430 | goto wrongnumargs; | |
2431 | #endif | |
e2806c10 | 2432 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), arg1, SCM_ENV (proc)); |
0f2d19dd JB |
2433 | proc = SCM_CODE (proc); |
2434 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
2435 | arg1 = EVALCAR (proc, args); | |
2436 | RETURN (arg1); | |
2437 | case scm_tc7_contin: | |
2438 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2439 | scm_call_continuation (proc, arg1); | |
2440 | #ifdef CCLO | |
2441 | case scm_tc7_cclo: | |
2442 | #ifdef DEVAL | |
6dbd0af5 MD |
2443 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
2444 | arg1 = proc; | |
2445 | proc = SCM_CCLO_SUBR (proc); | |
2446 | debug.vect[0].a.proc = proc; | |
2447 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
2448 | #else |
2449 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
2450 | arg1 = proc; |
2451 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 2452 | #endif |
0f2d19dd JB |
2453 | goto tail; |
2454 | #endif | |
2455 | wrongnumargs: | |
f5bf2977 | 2456 | scm_wrong_num_args (proc); |
0f2d19dd JB |
2457 | default: |
2458 | badproc: | |
2459 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
2460 | RETURN (arg1); | |
2461 | } | |
2462 | #ifdef DEVAL | |
6dbd0af5 MD |
2463 | exit: |
2464 | if (CHECK_EXIT) | |
b7ff98dd | 2465 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2466 | { |
b7ff98dd MD |
2467 | SCM_EXIT_FRAME_P = 0; |
2468 | SCM_RESET_DEBUG_MODE; | |
2469 | SCM_CLEAR_TRACED_FRAME (debug); | |
2470 | if (SCM_CHEAPTRAPS_P) | |
6dbd0af5 MD |
2471 | arg1 = scm_make_debugobj ((scm_debug_frame *) &debug); |
2472 | else | |
2473 | { | |
2474 | scm_make_cont (&arg1); | |
2475 | if (setjmp (SCM_JMPBUF (arg1))) | |
2476 | { | |
2477 | proc = SCM_THROW_VALUE (arg1); | |
2478 | goto ret; | |
2479 | } | |
2480 | } | |
2481 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
2482 | } | |
2483 | ret: | |
1646d37b | 2484 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2485 | return proc; |
2486 | #endif | |
2487 | } | |
2488 | ||
6dbd0af5 MD |
2489 | |
2490 | /* SECTION: The rest of this file is only read once. | |
2491 | */ | |
2492 | ||
0f2d19dd JB |
2493 | #ifndef DEVAL |
2494 | ||
2495 | SCM_PROC(s_map, "map", 2, 0, 1, scm_map); | |
1cc91f1b | 2496 | |
0f2d19dd JB |
2497 | SCM |
2498 | scm_map (proc, arg1, args) | |
2499 | SCM proc; | |
2500 | SCM arg1; | |
2501 | SCM args; | |
0f2d19dd JB |
2502 | { |
2503 | long i; | |
2504 | SCM res = SCM_EOL; | |
2505 | SCM *pres = &res; | |
2506 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2507 | ||
2508 | if (SCM_NULLP (arg1)) | |
2509 | return res; | |
2510 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map); | |
2511 | if (SCM_NULLP (args)) | |
2512 | { | |
2513 | while (SCM_NIMP (arg1)) | |
2514 | { | |
2515 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
2516 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
2517 | pres = &SCM_CDR (*pres); | |
2518 | arg1 = SCM_CDR (arg1); | |
2519 | } | |
2520 | return res; | |
2521 | } | |
2522 | args = scm_vector (scm_cons (arg1, args)); | |
2523 | ve = SCM_VELTS (args); | |
2524 | #ifndef RECKLESS | |
2525 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2526 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map); | |
2527 | #endif | |
2528 | while (1) | |
2529 | { | |
2530 | arg1 = SCM_EOL; | |
2531 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2532 | { | |
2533 | if SCM_IMP | |
2534 | (ve[i]) return res; | |
2535 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2536 | ve[i] = SCM_CDR (ve[i]); | |
2537 | } | |
2538 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
2539 | pres = &SCM_CDR (*pres); | |
2540 | } | |
2541 | } | |
2542 | ||
2543 | ||
2544 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
1cc91f1b | 2545 | |
0f2d19dd JB |
2546 | SCM |
2547 | scm_for_each (proc, arg1, args) | |
2548 | SCM proc; | |
2549 | SCM arg1; | |
2550 | SCM args; | |
0f2d19dd JB |
2551 | { |
2552 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2553 | long i; | |
2554 | if SCM_NULLP (arg1) | |
2555 | return SCM_UNSPECIFIED; | |
2556 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each); | |
2557 | if SCM_NULLP (args) | |
2558 | { | |
2559 | while SCM_NIMP (arg1) | |
2560 | { | |
2561 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
2562 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
2563 | arg1 = SCM_CDR (arg1); | |
2564 | } | |
2565 | return SCM_UNSPECIFIED; | |
2566 | } | |
2567 | args = scm_vector (scm_cons (arg1, args)); | |
2568 | ve = SCM_VELTS (args); | |
2569 | #ifndef RECKLESS | |
2570 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2571 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each); | |
2572 | #endif | |
2573 | while (1) | |
2574 | { | |
2575 | arg1 = SCM_EOL; | |
2576 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2577 | { | |
2578 | if SCM_IMP | |
2579 | (ve[i]) return SCM_UNSPECIFIED; | |
2580 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2581 | ve[i] = SCM_CDR (ve[i]); | |
2582 | } | |
2583 | scm_apply (proc, arg1, SCM_EOL); | |
2584 | } | |
2585 | } | |
2586 | ||
2587 | ||
1cc91f1b | 2588 | |
0f2d19dd JB |
2589 | SCM |
2590 | scm_closure (code, env) | |
2591 | SCM code; | |
2592 | SCM env; | |
0f2d19dd JB |
2593 | { |
2594 | register SCM z; | |
2595 | SCM_NEWCELL (z); | |
2596 | SCM_SETCODE (z, code); | |
2597 | SCM_ENV (z) = env; | |
2598 | return z; | |
2599 | } | |
2600 | ||
2601 | ||
2602 | long scm_tc16_promise; | |
1cc91f1b | 2603 | |
0f2d19dd JB |
2604 | SCM |
2605 | scm_makprom (code) | |
2606 | SCM code; | |
0f2d19dd JB |
2607 | { |
2608 | register SCM z; | |
2609 | SCM_NEWCELL (z); | |
2610 | SCM_CDR (z) = code; | |
2611 | SCM_CAR (z) = scm_tc16_promise; | |
2612 | return z; | |
2613 | } | |
2614 | ||
2615 | ||
1cc91f1b JB |
2616 | |
2617 | static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
2618 | ||
0f2d19dd | 2619 | static int |
19402679 | 2620 | prinprom (exp, port, pstate) |
0f2d19dd JB |
2621 | SCM exp; |
2622 | SCM port; | |
19402679 | 2623 | scm_print_state *pstate; |
0f2d19dd | 2624 | { |
19402679 | 2625 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd | 2626 | scm_gen_puts (scm_regular_string, "#<promise ", port); |
19402679 MD |
2627 | SCM_SET_WRITINGP (pstate, 1); |
2628 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2629 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2630 | scm_gen_putc ('>', port); |
2631 | return !0; | |
2632 | } | |
2633 | ||
2634 | ||
2635 | SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro); | |
1cc91f1b | 2636 | |
0f2d19dd JB |
2637 | SCM |
2638 | scm_makacro (code) | |
2639 | SCM code; | |
0f2d19dd JB |
2640 | { |
2641 | register SCM z; | |
2642 | SCM_NEWCELL (z); | |
2643 | SCM_CDR (z) = code; | |
2644 | SCM_CAR (z) = scm_tc16_macro; | |
2645 | return z; | |
2646 | } | |
2647 | ||
2648 | ||
2649 | SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro); | |
1cc91f1b | 2650 | |
0f2d19dd JB |
2651 | SCM |
2652 | scm_makmacro (code) | |
2653 | SCM code; | |
0f2d19dd JB |
2654 | { |
2655 | register SCM z; | |
2656 | SCM_NEWCELL (z); | |
2657 | SCM_CDR (z) = code; | |
2658 | SCM_CAR (z) = scm_tc16_macro | (1L << 16); | |
2659 | return z; | |
2660 | } | |
2661 | ||
2662 | ||
2663 | SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro); | |
1cc91f1b | 2664 | |
0f2d19dd JB |
2665 | SCM |
2666 | scm_makmmacro (code) | |
2667 | SCM code; | |
0f2d19dd JB |
2668 | { |
2669 | register SCM z; | |
2670 | SCM_NEWCELL (z); | |
2671 | SCM_CDR (z) = code; | |
2672 | SCM_CAR (z) = scm_tc16_macro | (2L << 16); | |
2673 | return z; | |
2674 | } | |
2675 | ||
2676 | ||
1cc91f1b JB |
2677 | |
2678 | static int prinmacro SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
2679 | ||
0f2d19dd | 2680 | static int |
19402679 | 2681 | prinmacro (exp, port, pstate) |
0f2d19dd JB |
2682 | SCM exp; |
2683 | SCM port; | |
19402679 | 2684 | scm_print_state *pstate; |
0f2d19dd | 2685 | { |
19402679 | 2686 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd JB |
2687 | if (SCM_CAR (exp) & (3L << 16)) |
2688 | scm_gen_puts (scm_regular_string, "#<macro", port); | |
2689 | else | |
2690 | scm_gen_puts (scm_regular_string, "#<syntax", port); | |
2691 | if (SCM_CAR (exp) & (2L << 16)) | |
2692 | scm_gen_putc ('!', port); | |
2693 | scm_gen_putc (' ', port); | |
19402679 MD |
2694 | SCM_SET_WRITINGP (pstate, 1); |
2695 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2696 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2697 | scm_gen_putc ('>', port); |
2698 | return !0; | |
2699 | } | |
2700 | ||
2701 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); | |
1cc91f1b | 2702 | |
0f2d19dd JB |
2703 | SCM |
2704 | scm_force (x) | |
2705 | SCM x; | |
0f2d19dd JB |
2706 | { |
2707 | SCM_ASSERT ((SCM_TYP16 (x) == scm_tc16_promise), x, SCM_ARG1, s_force); | |
2708 | if (!((1L << 16) & SCM_CAR (x))) | |
2709 | { | |
2710 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
2711 | if (!((1L << 16) & SCM_CAR (x))) | |
2712 | { | |
2713 | SCM_DEFER_INTS; | |
2714 | SCM_CDR (x) = ans; | |
2715 | SCM_CAR (x) |= (1L << 16); | |
2716 | SCM_ALLOW_INTS; | |
2717 | } | |
2718 | } | |
2719 | return SCM_CDR (x); | |
2720 | } | |
2721 | ||
2722 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
1cc91f1b | 2723 | |
0f2d19dd JB |
2724 | SCM |
2725 | scm_promise_p (x) | |
2726 | SCM x; | |
0f2d19dd JB |
2727 | { |
2728 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
2729 | ? SCM_BOOL_T | |
2730 | : SCM_BOOL_F); | |
2731 | } | |
2732 | ||
2733 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
1cc91f1b | 2734 | |
0f2d19dd JB |
2735 | SCM |
2736 | scm_copy_tree (obj) | |
2737 | SCM obj; | |
0f2d19dd JB |
2738 | { |
2739 | SCM ans, tl; | |
2740 | if SCM_IMP | |
2741 | (obj) return obj; | |
2742 | if (SCM_VECTORP (obj)) | |
2743 | { | |
2744 | scm_sizet i = SCM_LENGTH (obj); | |
2745 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED, SCM_UNDEFINED); | |
2746 | while (i--) | |
2747 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
2748 | return ans; | |
2749 | } | |
2750 | if SCM_NCONSP (obj) | |
2751 | return obj; | |
2752 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
2753 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
2754 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) | |
2755 | tl = (SCM_CDR (tl) = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED)); | |
2756 | SCM_CDR (tl) = obj; | |
2757 | return ans; | |
2758 | } | |
2759 | ||
1cc91f1b | 2760 | |
0f2d19dd JB |
2761 | SCM |
2762 | scm_eval_3 (obj, copyp, env) | |
2763 | SCM obj; | |
2764 | int copyp; | |
2765 | SCM env; | |
0f2d19dd JB |
2766 | { |
2767 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
2768 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
2769 | else if (copyp) | |
2770 | obj = scm_copy_tree (obj); | |
6dbd0af5 | 2771 | return XEVAL (obj, env); |
0f2d19dd JB |
2772 | } |
2773 | ||
1cc91f1b | 2774 | |
0f2d19dd JB |
2775 | SCM |
2776 | scm_top_level_env (thunk) | |
2777 | SCM thunk; | |
0f2d19dd JB |
2778 | { |
2779 | if (SCM_IMP(thunk)) | |
2780 | return SCM_EOL; | |
2781 | else | |
2782 | return scm_cons(thunk, (SCM)SCM_EOL); | |
2783 | } | |
2784 | ||
2785 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); | |
1cc91f1b | 2786 | |
0f2d19dd JB |
2787 | SCM |
2788 | scm_eval2 (obj, env_thunk) | |
2789 | SCM obj; | |
2790 | SCM env_thunk; | |
0f2d19dd JB |
2791 | { |
2792 | return scm_eval_3 (obj, 1, scm_top_level_env(env_thunk)); | |
2793 | } | |
2794 | ||
2795 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
1cc91f1b | 2796 | |
0f2d19dd JB |
2797 | SCM |
2798 | scm_eval (obj) | |
2799 | SCM obj; | |
0f2d19dd JB |
2800 | { |
2801 | return | |
2802 | scm_eval_3(obj, 1, scm_top_level_env(SCM_CDR(scm_top_level_lookup_thunk_var))); | |
2803 | } | |
2804 | ||
2805 | SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); | |
1cc91f1b | 2806 | |
0f2d19dd JB |
2807 | SCM |
2808 | scm_eval_x (obj) | |
2809 | SCM obj; | |
0f2d19dd JB |
2810 | { |
2811 | return | |
2812 | scm_eval_3(obj, | |
2813 | 0, | |
2814 | scm_top_level_env (SCM_CDR (scm_top_level_lookup_thunk_var))); | |
2815 | } | |
2816 | ||
2817 | SCM_PROC (s_macro_eval_x, "macro-eval!", 2, 0, 0, scm_macro_eval_x); | |
1cc91f1b | 2818 | |
0f2d19dd JB |
2819 | SCM |
2820 | scm_macro_eval_x (exp, env) | |
2821 | SCM exp; | |
2822 | SCM env; | |
0f2d19dd JB |
2823 | { |
2824 | return scm_eval_3 (exp, 0, env); | |
2825 | } | |
2826 | ||
1cc91f1b | 2827 | |
0f2d19dd JB |
2828 | SCM |
2829 | scm_definedp (x, env) | |
2830 | SCM x; | |
2831 | SCM env; | |
0f2d19dd JB |
2832 | { |
2833 | SCM proc = SCM_CAR (x = SCM_CDR (x)); | |
2834 | if (SCM_ISYMP (proc)) | |
2835 | return SCM_BOOL_T; | |
2836 | else if(SCM_IMP(proc) || !SCM_SYMBOLP(proc)) | |
2837 | return SCM_BOOL_F; | |
2838 | else | |
2839 | { | |
2840 | SCM vcell = scm_sym2vcell(proc, env_top_level(env), SCM_BOOL_F); | |
2841 | return (vcell == SCM_BOOL_F || SCM_UNBNDP(SCM_CDR(vcell))) ? SCM_BOOL_F : SCM_BOOL_T; | |
2842 | } | |
2843 | } | |
2844 | ||
2845 | static scm_smobfuns promsmob = | |
2846 | {scm_markcdr, scm_free0, prinprom}; | |
2847 | ||
2848 | static scm_smobfuns macrosmob = | |
2849 | {scm_markcdr, scm_free0, prinmacro}; | |
2850 | ||
1cc91f1b | 2851 | |
0f2d19dd JB |
2852 | SCM |
2853 | scm_make_synt (name, macroizer, fcn) | |
2854 | char *name; | |
2855 | SCM (*macroizer) (); | |
2856 | SCM (*fcn) (); | |
0f2d19dd JB |
2857 | { |
2858 | SCM symcell = scm_sysintern (name, SCM_UNDEFINED); | |
2859 | long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); | |
2860 | register SCM z; | |
2861 | if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) | |
2862 | tmp = 0; | |
2863 | SCM_NEWCELL (z); | |
2864 | SCM_SUBRF (z) = fcn; | |
2865 | SCM_CAR (z) = tmp + scm_tc7_subr_2; | |
2866 | SCM_CDR (symcell) = macroizer (z); | |
2867 | return SCM_CAR (symcell); | |
2868 | } | |
2869 | ||
6dbd0af5 MD |
2870 | |
2871 | /* At this point, scm_deval and scm_dapply are generated. | |
2872 | */ | |
2873 | ||
0f2d19dd | 2874 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
2875 | # define DEVAL |
2876 | # include "eval.c" | |
0f2d19dd JB |
2877 | #endif |
2878 | ||
2879 | ||
1cc91f1b | 2880 | |
0f2d19dd JB |
2881 | void |
2882 | scm_init_eval () | |
0f2d19dd | 2883 | { |
0f2d19dd JB |
2884 | scm_tc16_promise = scm_newsmob (&promsmob); |
2885 | scm_tc16_macro = scm_newsmob (¯osmob); | |
2886 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); | |
2887 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
2888 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
2889 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
2890 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
2891 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
2892 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
2893 | ||
2894 | /* acros */ | |
2895 | scm_i_quasiquote = scm_make_synt (s_quasiquote, scm_makacro, scm_m_quasiquote); | |
6dbd0af5 | 2896 | scm_make_synt (s_undefine, scm_makacro, scm_m_undefine); |
0f2d19dd JB |
2897 | scm_make_synt (s_delay, scm_makacro, scm_m_delay); |
2898 | /* end of acros */ | |
2899 | ||
2900 | scm_top_level_lookup_thunk_var = | |
2901 | scm_sysintern("*top-level-lookup-thunk*", SCM_BOOL_F); | |
2902 | ||
6dbd0af5 MD |
2903 | scm_i_and = scm_make_synt ("and", scm_makmmacro, scm_m_and); |
2904 | scm_i_begin = scm_make_synt ("begin", scm_makmmacro, scm_m_begin); | |
2905 | scm_i_case = scm_make_synt ("case", scm_makmmacro, scm_m_case); | |
2906 | scm_i_cond = scm_make_synt ("cond", scm_makmmacro, scm_m_cond); | |
2907 | scm_i_define = scm_make_synt ("define", scm_makmmacro, scm_m_define); | |
2908 | scm_i_do = scm_make_synt ("do", scm_makmmacro, scm_m_do); | |
2909 | scm_i_if = scm_make_synt ("if", scm_makmmacro, scm_m_if); | |
0f2d19dd JB |
2910 | scm_i_lambda = scm_make_synt ("lambda", scm_makmmacro, scm_m_lambda); |
2911 | scm_i_let = scm_make_synt ("let", scm_makmmacro, scm_m_let); | |
6dbd0af5 MD |
2912 | scm_i_letrec = scm_make_synt ("letrec", scm_makmmacro, scm_m_letrec); |
2913 | scm_i_letstar = scm_make_synt ("let*", scm_makmmacro, scm_m_letstar); | |
2914 | scm_i_or = scm_make_synt ("or", scm_makmmacro, scm_m_or); | |
0f2d19dd | 2915 | scm_i_quote = scm_make_synt ("quote", scm_makmmacro, scm_m_quote); |
6dbd0af5 MD |
2916 | scm_i_set = scm_make_synt ("set!", scm_makmmacro, scm_m_set); |
2917 | scm_i_atapply = scm_make_synt ("@apply", scm_makmmacro, scm_m_apply); | |
2918 | scm_i_atcall_cc = scm_make_synt ("@call-with-current-continuation", | |
2919 | scm_makmmacro, scm_m_cont); | |
2920 | ||
0f2d19dd JB |
2921 | scm_make_synt ("defined?", scm_makmmacro, scm_definedp); |
2922 | scm_i_name = SCM_CAR (scm_sysintern ("name", SCM_UNDEFINED)); | |
2923 | scm_permanent_object (scm_i_name); | |
6dbd0af5 MD |
2924 | |
2925 | #ifdef DEBUG_EXTENSIONS | |
2926 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
2927 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
2928 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
2929 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
2930 | #endif | |
2931 | ||
0f2d19dd JB |
2932 | #include "eval.x" |
2933 | } | |
0f2d19dd | 2934 | |
6dbd0af5 | 2935 | #endif /* !DEVAL */ |