Commit | Line | Data |
---|---|---|
9b8d3288 | 1 | /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
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)) | |
a23afe53 MD |
161 | return SCM_CDRLOC (er); |
162 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
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; | |
a23afe53 | 181 | al = SCM_CARLOC (env); |
0f2d19dd JB |
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 | |
a23afe53 | 188 | SCM_SETCAR (vloc, iloc + SCM_ICDR); |
0f2d19dd | 189 | #endif |
a23afe53 | 190 | return SCM_CDRLOC (*al); |
0f2d19dd JB |
191 | } |
192 | else | |
193 | break; | |
a23afe53 | 194 | al = SCM_CDRLOC (*al); |
0f2d19dd JB |
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 | |
a23afe53 | 205 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 206 | #endif |
a23afe53 | 207 | return SCM_CARLOC (*al); |
0f2d19dd JB |
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,...) */ |
523f5266 GH |
238 | scm_misc_error (NULL, |
239 | SCM_NULLP (env) | |
240 | ? "Unbound variable: %S" | |
241 | : "Damaged environment: %S", | |
242 | scm_listify (var, SCM_UNDEFINED)); | |
0f2d19dd JB |
243 | } |
244 | #endif | |
a23afe53 | 245 | SCM_SETCAR (vloc, var + 1); |
0f2d19dd JB |
246 | /* Except wait...what if the var is not a vcell, |
247 | * but syntax or something.... | |
248 | */ | |
a23afe53 | 249 | return SCM_CDRLOC (var); |
0f2d19dd JB |
250 | } |
251 | ||
252 | #define unmemocar scm_unmemocar | |
1cc91f1b | 253 | |
0f2d19dd JB |
254 | SCM |
255 | scm_unmemocar (form, env) | |
256 | SCM form; | |
257 | SCM env; | |
0f2d19dd | 258 | { |
6dbd0af5 | 259 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 260 | register int ir; |
6dbd0af5 | 261 | #endif |
0f2d19dd JB |
262 | SCM c; |
263 | ||
264 | if (SCM_IMP (form)) | |
265 | return form; | |
266 | c = SCM_CAR (form); | |
267 | if (1 == (c & 7)) | |
a23afe53 | 268 | SCM_SETCAR (form, SCM_CAR (c - 1)); |
0f2d19dd | 269 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 270 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
271 | else if (SCM_ILOCP (c)) |
272 | { | |
273 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
274 | env = SCM_CDR (env); | |
275 | env = SCM_CAR (SCM_CAR (env)); | |
276 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
277 | env = SCM_CDR (env); | |
a23afe53 | 278 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 279 | } |
6dbd0af5 | 280 | #endif |
0f2d19dd JB |
281 | #endif |
282 | return form; | |
283 | } | |
284 | ||
1cc91f1b | 285 | |
0f2d19dd JB |
286 | SCM |
287 | scm_eval_car (pair, env) | |
288 | SCM pair; | |
289 | SCM env; | |
0f2d19dd | 290 | { |
6dbd0af5 | 291 | return XEVALCAR (pair, env); |
0f2d19dd JB |
292 | } |
293 | ||
294 | \f | |
295 | /* | |
296 | * The following rewrite expressions and | |
297 | * some memoized forms have different syntax | |
298 | */ | |
299 | ||
300 | static char s_expression[] = "missing or extra expression"; | |
301 | static char s_test[] = "bad test"; | |
302 | static char s_body[] = "bad body"; | |
303 | static char s_bindings[] = "bad bindings"; | |
304 | static char s_variable[] = "bad variable"; | |
305 | static char s_clauses[] = "bad or missing clauses"; | |
306 | static char s_formals[] = "bad formals"; | |
307 | #define ASSYNT(_cond, _arg, _pos, _subr) if(!(_cond))scm_wta(_arg, (char *)_pos, _subr); | |
308 | ||
309 | SCM scm_i_dot, scm_i_quote, scm_i_quasiquote, scm_i_lambda, scm_i_let, | |
310 | scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply; | |
6dbd0af5 MD |
311 | SCM scm_i_define, scm_i_and, scm_i_begin, scm_i_case, scm_i_cond, |
312 | scm_i_do, scm_i_if, scm_i_let, scm_i_letrec, scm_i_letstar, | |
313 | scm_i_or, scm_i_set, scm_i_atapply, scm_i_atcall_cc; | |
0f2d19dd JB |
314 | static char s_quasiquote[] = "quasiquote"; |
315 | static char s_delay[] = "delay"; | |
6dbd0af5 MD |
316 | static char s_undefine[] = "undefine"; |
317 | #ifdef DEBUG_EXTENSIONS | |
318 | SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame; | |
319 | SCM scm_i_trace; | |
320 | #endif | |
0f2d19dd JB |
321 | |
322 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
323 | ||
324 | ||
1cc91f1b JB |
325 | |
326 | static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, char *what)); | |
327 | ||
0f2d19dd JB |
328 | static void |
329 | bodycheck (xorig, bodyloc, what) | |
330 | SCM xorig; | |
331 | SCM *bodyloc; | |
332 | char *what; | |
0f2d19dd JB |
333 | { |
334 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, s_expression); | |
335 | } | |
336 | ||
337 | ||
1cc91f1b | 338 | |
0f2d19dd JB |
339 | SCM |
340 | scm_m_quote (xorig, env) | |
341 | SCM xorig; | |
342 | SCM env; | |
0f2d19dd JB |
343 | { |
344 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "quote"); | |
345 | return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig)); | |
346 | } | |
347 | ||
348 | ||
1cc91f1b | 349 | |
0f2d19dd JB |
350 | SCM |
351 | scm_m_begin (xorig, env) | |
352 | SCM xorig; | |
353 | SCM env; | |
0f2d19dd JB |
354 | { |
355 | ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, xorig, s_expression, "begin"); | |
356 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); | |
357 | } | |
358 | ||
359 | ||
1cc91f1b | 360 | |
0f2d19dd JB |
361 | SCM |
362 | scm_m_if (xorig, env) | |
363 | SCM xorig; | |
364 | SCM env; | |
0f2d19dd JB |
365 | { |
366 | int len = scm_ilength (SCM_CDR (xorig)); | |
367 | ASSYNT (len >= 2 && len <= 3, xorig, s_expression, "if"); | |
368 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); | |
369 | } | |
370 | ||
371 | ||
1cc91f1b | 372 | |
0f2d19dd JB |
373 | SCM |
374 | scm_m_set (xorig, env) | |
375 | SCM xorig; | |
376 | SCM env; | |
0f2d19dd | 377 | { |
6dbd0af5 MD |
378 | SCM x = SCM_CDR (xorig); |
379 | ASSYNT (2 == scm_ilength (x), xorig, s_expression, "set!"); | |
380 | ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)), | |
381 | xorig, s_variable, "set!"); | |
0f2d19dd JB |
382 | return scm_cons (SCM_IM_SET, x); |
383 | } | |
384 | ||
385 | ||
386 | #if 0 | |
1cc91f1b | 387 | |
0f2d19dd JB |
388 | SCM |
389 | scm_m_vref (xorig, env) | |
390 | SCM xorig; | |
391 | SCM env; | |
0f2d19dd JB |
392 | { |
393 | SCM x = SCM_CDR (xorig); | |
394 | ASSYNT (1 == scm_ilength (x), xorig, s_expression, s_vref); | |
395 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) | |
396 | { | |
f5bf2977 | 397 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 GH |
398 | scm_misc_error (NULL, |
399 | "Bad variable: %S", | |
400 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); | |
0f2d19dd JB |
401 | } |
402 | ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), | |
403 | xorig, s_variable, s_vref); | |
404 | return | |
405 | return scm_cons (IM_VREF, x); | |
406 | } | |
407 | ||
408 | ||
1cc91f1b | 409 | |
0f2d19dd JB |
410 | SCM |
411 | scm_m_vset (xorig, env) | |
412 | SCM xorig; | |
413 | SCM env; | |
0f2d19dd JB |
414 | { |
415 | SCM x = SCM_CDR (xorig); | |
416 | ASSYNT (3 == scm_ilength (x), xorig, s_expression, s_vset); | |
417 | ASSYNT (( DEFSCM_VARIABLEP (SCM_CAR (x)) | |
418 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
419 | xorig, s_variable, s_vset); | |
420 | return scm_cons (IM_VSET, x); | |
421 | } | |
422 | #endif | |
423 | ||
424 | ||
1cc91f1b | 425 | |
0f2d19dd JB |
426 | SCM |
427 | scm_m_and (xorig, env) | |
428 | SCM xorig; | |
429 | SCM env; | |
0f2d19dd JB |
430 | { |
431 | int len = scm_ilength (SCM_CDR (xorig)); | |
432 | ASSYNT (len >= 0, xorig, s_test, "and"); | |
433 | if (len >= 1) | |
434 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); | |
435 | else | |
436 | return SCM_BOOL_T; | |
437 | } | |
438 | ||
439 | ||
1cc91f1b | 440 | |
0f2d19dd JB |
441 | SCM |
442 | scm_m_or (xorig, env) | |
443 | SCM xorig; | |
444 | SCM env; | |
0f2d19dd JB |
445 | { |
446 | int len = scm_ilength (SCM_CDR (xorig)); | |
447 | ASSYNT (len >= 0, xorig, s_test, "or"); | |
448 | if (len >= 1) | |
449 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); | |
450 | else | |
451 | return SCM_BOOL_F; | |
452 | } | |
453 | ||
454 | ||
1cc91f1b | 455 | |
0f2d19dd JB |
456 | SCM |
457 | scm_m_case (xorig, env) | |
458 | SCM xorig; | |
459 | SCM env; | |
0f2d19dd JB |
460 | { |
461 | SCM proc, x = SCM_CDR (xorig); | |
462 | ASSYNT (scm_ilength (x) >= 2, xorig, s_clauses, "case"); | |
463 | while (SCM_NIMP (x = SCM_CDR (x))) | |
464 | { | |
465 | proc = SCM_CAR (x); | |
466 | ASSYNT (scm_ilength (proc) >= 2, xorig, s_clauses, "case"); | |
467 | ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 || scm_i_else == SCM_CAR (proc), | |
468 | xorig, s_clauses, "case"); | |
469 | } | |
470 | return scm_cons (SCM_IM_CASE, SCM_CDR (xorig)); | |
471 | } | |
472 | ||
473 | ||
1cc91f1b | 474 | |
0f2d19dd JB |
475 | SCM |
476 | scm_m_cond (xorig, env) | |
477 | SCM xorig; | |
478 | SCM env; | |
0f2d19dd JB |
479 | { |
480 | SCM arg1, x = SCM_CDR (xorig); | |
481 | int len = scm_ilength (x); | |
482 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
483 | while (SCM_NIMP (x)) | |
484 | { | |
485 | arg1 = SCM_CAR (x); | |
486 | len = scm_ilength (arg1); | |
487 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
488 | if (scm_i_else == SCM_CAR (arg1)) | |
489 | { | |
490 | ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, xorig, "bad ELSE clause", "cond"); | |
a23afe53 | 491 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd JB |
492 | } |
493 | if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1))) | |
494 | ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), | |
495 | xorig, "bad recipient", "cond"); | |
496 | x = SCM_CDR (x); | |
497 | } | |
498 | return scm_cons (SCM_IM_COND, SCM_CDR (xorig)); | |
499 | } | |
500 | ||
501 | ||
1cc91f1b | 502 | |
0f2d19dd JB |
503 | SCM |
504 | scm_m_lambda (xorig, env) | |
505 | SCM xorig; | |
506 | SCM env; | |
0f2d19dd JB |
507 | { |
508 | SCM proc, x = SCM_CDR (xorig); | |
509 | if (scm_ilength (x) < 2) | |
510 | goto badforms; | |
511 | proc = SCM_CAR (x); | |
512 | if SCM_NULLP | |
513 | (proc) goto memlambda; | |
514 | if SCM_IMP | |
515 | (proc) goto badforms; | |
516 | if SCM_SYMBOLP | |
517 | (proc) goto memlambda; | |
518 | if SCM_NCONSP | |
519 | (proc) goto badforms; | |
520 | while SCM_NIMP | |
521 | (proc) | |
522 | { | |
523 | if SCM_NCONSP | |
524 | (proc) | |
525 | if (!SCM_SYMBOLP (proc)) | |
526 | goto badforms; | |
527 | else | |
528 | goto memlambda; | |
529 | if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc)))) | |
530 | goto badforms; | |
531 | proc = SCM_CDR (proc); | |
532 | } | |
533 | if SCM_NNULLP | |
534 | (proc) | |
535 | badforms:scm_wta (xorig, s_formals, "lambda"); | |
536 | memlambda: | |
a23afe53 | 537 | bodycheck (xorig, SCM_CDRLOC (x), "lambda"); |
0f2d19dd JB |
538 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); |
539 | } | |
540 | ||
541 | ||
1cc91f1b | 542 | |
0f2d19dd JB |
543 | SCM |
544 | scm_m_letstar (xorig, env) | |
545 | SCM xorig; | |
546 | SCM env; | |
0f2d19dd JB |
547 | { |
548 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
549 | int len = scm_ilength (x); | |
550 | ASSYNT (len >= 2, xorig, s_body, "let*"); | |
551 | proc = SCM_CAR (x); | |
552 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let*"); | |
6dbd0af5 | 553 | while SCM_NIMP (proc) |
0f2d19dd JB |
554 | { |
555 | arg1 = SCM_CAR (proc); | |
556 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let*"); | |
557 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let*"); | |
558 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 559 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
560 | proc = SCM_CDR (proc); |
561 | } | |
562 | x = scm_cons (vars, SCM_CDR (x)); | |
a23afe53 | 563 | bodycheck (xorig, SCM_CDRLOC (x), "let*"); |
0f2d19dd JB |
564 | return scm_cons (SCM_IM_LETSTAR, x); |
565 | } | |
566 | ||
567 | /* DO gets the most radically altered syntax | |
568 | (do ((<var1> <init1> <step1>) | |
569 | (<var2> <init2>) | |
570 | ... ) | |
571 | (<test> <return>) | |
572 | <body>) | |
573 | ;; becomes | |
574 | (do_mem (varn ... var2 var1) | |
575 | (<init1> <init2> ... <initn>) | |
576 | (<test> <return>) | |
577 | (<body>) | |
578 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
579 | */ | |
580 | ||
581 | ||
1cc91f1b | 582 | |
0f2d19dd JB |
583 | SCM |
584 | scm_m_do (xorig, env) | |
585 | SCM xorig; | |
586 | SCM env; | |
0f2d19dd JB |
587 | { |
588 | SCM x = SCM_CDR (xorig), arg1, proc; | |
589 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
590 | SCM *initloc = &inits, *steploc = &steps; | |
591 | int len = scm_ilength (x); | |
592 | ASSYNT (len >= 2, xorig, s_test, "do"); | |
593 | proc = SCM_CAR (x); | |
594 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "do"); | |
595 | while SCM_NIMP | |
596 | (proc) | |
597 | { | |
598 | arg1 = SCM_CAR (proc); | |
599 | len = scm_ilength (arg1); | |
600 | ASSYNT (2 == len || 3 == len, xorig, s_bindings, "do"); | |
601 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "do"); | |
602 | /* vars reversed here, inits and steps reversed at evaluation */ | |
603 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
604 | arg1 = SCM_CDR (arg1); | |
605 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 606 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
607 | arg1 = SCM_CDR (arg1); |
608 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 609 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
610 | proc = SCM_CDR (proc); |
611 | } | |
612 | x = SCM_CDR (x); | |
613 | ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, s_test, "do"); | |
614 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); | |
615 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 616 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
0f2d19dd JB |
617 | return scm_cons (SCM_IM_DO, x); |
618 | } | |
619 | ||
6dbd0af5 MD |
620 | /* evalcar is small version of inline EVALCAR when we don't care about |
621 | * speed | |
622 | */ | |
623 | #define evalcar scm_eval_car | |
0f2d19dd | 624 | |
1cc91f1b JB |
625 | |
626 | static SCM iqq SCM_P ((SCM form, SCM env, int depth)); | |
627 | ||
0f2d19dd JB |
628 | static SCM |
629 | iqq (form, env, depth) | |
630 | SCM form; | |
631 | SCM env; | |
632 | int depth; | |
0f2d19dd JB |
633 | { |
634 | SCM tmp; | |
635 | int edepth = depth; | |
636 | if SCM_IMP | |
637 | (form) return form; | |
638 | if (SCM_VECTORP (form)) | |
639 | { | |
640 | long i = SCM_LENGTH (form); | |
641 | SCM *data = SCM_VELTS (form); | |
642 | tmp = SCM_EOL; | |
643 | for (; --i >= 0;) | |
644 | tmp = scm_cons (data[i], tmp); | |
645 | return scm_vector (iqq (tmp, env, depth)); | |
646 | } | |
647 | if SCM_NCONSP | |
648 | (form) return form; | |
649 | tmp = SCM_CAR (form); | |
650 | if (scm_i_quasiquote == tmp) | |
651 | { | |
652 | depth++; | |
653 | goto label; | |
654 | } | |
655 | if (scm_i_unquote == tmp) | |
656 | { | |
657 | --depth; | |
658 | label: | |
659 | form = SCM_CDR (form); | |
660 | /* !!! might need a check here to be sure that form isn't a struct. */ | |
661 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), | |
662 | form, SCM_ARG1, s_quasiquote); | |
663 | if (0 == depth) | |
664 | return evalcar (form, env); | |
665 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
666 | } | |
667 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
668 | { | |
669 | tmp = SCM_CDR (tmp); | |
670 | if (0 == --edepth) | |
671 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
672 | } | |
673 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
674 | } | |
675 | ||
676 | /* Here are acros which return values rather than code. */ | |
677 | ||
1cc91f1b | 678 | |
0f2d19dd JB |
679 | SCM |
680 | scm_m_quasiquote (xorig, env) | |
681 | SCM xorig; | |
682 | SCM env; | |
0f2d19dd JB |
683 | { |
684 | SCM x = SCM_CDR (xorig); | |
685 | ASSYNT (scm_ilength (x) == 1, xorig, s_expression, s_quasiquote); | |
686 | return iqq (SCM_CAR (x), env, 1); | |
687 | } | |
688 | ||
1cc91f1b | 689 | |
0f2d19dd JB |
690 | SCM |
691 | scm_m_delay (xorig, env) | |
692 | SCM xorig; | |
693 | SCM env; | |
0f2d19dd JB |
694 | { |
695 | ASSYNT (scm_ilength (xorig) == 2, xorig, s_expression, s_delay); | |
696 | xorig = SCM_CDR (xorig); | |
697 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
698 | env)); | |
699 | } | |
700 | ||
1cc91f1b JB |
701 | |
702 | static SCM env_top_level SCM_P ((SCM env)); | |
703 | ||
0f2d19dd JB |
704 | static SCM |
705 | env_top_level (env) | |
706 | SCM env; | |
0f2d19dd JB |
707 | { |
708 | while (SCM_NIMP(env)) | |
709 | { | |
710 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR(env))) | |
711 | return SCM_CAR(env); | |
712 | env = SCM_CDR (env); | |
713 | } | |
714 | return SCM_BOOL_F; | |
715 | } | |
716 | ||
1cc91f1b | 717 | |
0f2d19dd JB |
718 | SCM |
719 | scm_m_define (x, env) | |
720 | SCM x; | |
721 | SCM env; | |
0f2d19dd JB |
722 | { |
723 | SCM proc, arg1 = x; | |
724 | x = SCM_CDR (x); | |
725 | /* ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ | |
726 | ASSYNT (scm_ilength (x) >= 2, arg1, s_expression, "define"); | |
727 | proc = SCM_CAR (x); | |
728 | x = SCM_CDR (x); | |
729 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
730 | { /* nested define syntax */ | |
731 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
732 | proc = SCM_CAR (proc); | |
733 | } | |
734 | ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), arg1, s_variable, "define"); | |
735 | ASSYNT (1 == scm_ilength (x), arg1, s_expression, "define"); | |
736 | if (SCM_TOP_LEVEL (env)) | |
737 | { | |
738 | x = evalcar (x, env); | |
6dbd0af5 | 739 | #ifdef DEBUG_EXTENSIONS |
38bd0b3b | 740 | if (SCM_REC_PROCNAMES_P) |
6dbd0af5 MD |
741 | scm_set_procedure_property_x (x, scm_i_name, proc); |
742 | #endif | |
0f2d19dd JB |
743 | arg1 = scm_sym2vcell (proc, env_top_level (env), SCM_BOOL_T); |
744 | #if 0 | |
745 | #ifndef RECKLESS | |
746 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) | |
747 | && (SCM_CDR (arg1) != x)) | |
748 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
749 | else | |
750 | #endif | |
751 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
752 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 753 | #endif |
a23afe53 | 754 | SCM_SETCDR (arg1, x); |
0f2d19dd JB |
755 | #ifdef SICP |
756 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
757 | #else | |
758 | return SCM_UNSPECIFIED; | |
759 | #endif | |
760 | } | |
761 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
762 | } | |
6dbd0af5 MD |
763 | |
764 | SCM | |
765 | scm_m_undefine (x, env) | |
766 | SCM x, env; | |
767 | { | |
768 | SCM arg1 = x; | |
769 | x = SCM_CDR (x); | |
770 | ASSYNT (SCM_TOP_LEVEL (env), arg1, "bad placement ", s_undefine); | |
771 | ASSYNT (SCM_NIMP (x) && SCM_CONSP (x) && SCM_CDR (x) == SCM_EOL, | |
772 | arg1, s_expression, s_undefine); | |
773 | x = SCM_CAR (x); | |
774 | ASSYNT (SCM_NIMP (x) && SCM_SYMBOLP (x), arg1, s_variable, s_undefine); | |
775 | arg1 = scm_sym2vcell (x, env_top_level (env), SCM_BOOL_F); | |
776 | ASSYNT (SCM_NFALSEP (arg1) && !SCM_UNBNDP (SCM_CDR (arg1)), | |
777 | x, "variable already unbound ", s_undefine); | |
778 | #if 0 | |
779 | #ifndef RECKLESS | |
780 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == x)) | |
781 | scm_warn ("undefining built-in ", SCM_CHARS (x)); | |
782 | else | |
783 | #endif | |
784 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
785 | scm_warn ("redefining ", SCM_CHARS (x)); | |
786 | #endif | |
a23afe53 | 787 | SCM_SETCDR (arg1, SCM_UNDEFINED); |
6dbd0af5 MD |
788 | #ifdef SICP |
789 | return SCM_CAR (arg1); | |
790 | #else | |
791 | return SCM_UNSPECIFIED; | |
792 | #endif | |
793 | } | |
794 | ||
0f2d19dd JB |
795 | /* end of acros */ |
796 | ||
1cc91f1b | 797 | |
0f2d19dd JB |
798 | SCM |
799 | scm_m_letrec (xorig, env) | |
800 | SCM xorig; | |
801 | SCM env; | |
0f2d19dd JB |
802 | { |
803 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
804 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
805 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
806 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
807 | ||
808 | ASRTSYNTAX (scm_ilength (x) >= 2, s_body); | |
809 | proc = SCM_CAR (x); | |
810 | if SCM_NULLP | |
811 | (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
812 | ASRTSYNTAX (scm_ilength (proc) >= 1, s_bindings); | |
813 | do | |
814 | { | |
815 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
816 | arg1 = SCM_CAR (proc); | |
817 | ASRTSYNTAX (2 == scm_ilength (arg1), s_bindings); | |
818 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), s_variable); | |
819 | vars = scm_cons (SCM_CAR (arg1), vars); | |
820 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 821 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
822 | } |
823 | while SCM_NIMP | |
824 | (proc = SCM_CDR (proc)); | |
825 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); | |
a23afe53 | 826 | bodycheck (xorig, SCM_CDRLOC (SCM_CDR (cdrx)), what); |
0f2d19dd JB |
827 | return scm_cons (SCM_IM_LETREC, cdrx); |
828 | } | |
829 | ||
1cc91f1b | 830 | |
0f2d19dd JB |
831 | SCM |
832 | scm_m_let (xorig, env) | |
833 | SCM xorig; | |
834 | SCM env; | |
0f2d19dd JB |
835 | { |
836 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
837 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
838 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
839 | ||
840 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
841 | proc = SCM_CAR (x); | |
842 | if (SCM_NULLP (proc) | |
843 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
844 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
845 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
846 | ASSYNT (SCM_NIMP (proc), xorig, s_bindings, "let"); | |
847 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ | |
848 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
849 | if (!SCM_SYMBOLP (proc)) | |
850 | scm_wta (xorig, s_bindings, "let"); /* bad let */ | |
851 | name = proc; /* named let, build equiv letrec */ | |
852 | x = SCM_CDR (x); | |
853 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
854 | proc = SCM_CAR (x); /* bindings scm_list */ | |
855 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let"); | |
856 | while SCM_NIMP | |
857 | (proc) | |
858 | { /* vars and inits both in order */ | |
859 | arg1 = SCM_CAR (proc); | |
860 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let"); | |
861 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let"); | |
862 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); | |
a23afe53 | 863 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 864 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 865 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
866 | proc = SCM_CDR (proc); |
867 | } | |
868 | return | |
869 | scm_m_letrec (scm_cons2 (scm_i_let, | |
870 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
871 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
872 | env); | |
873 | } | |
874 | ||
875 | ||
1cc91f1b | 876 | |
0f2d19dd JB |
877 | SCM |
878 | scm_m_apply (xorig, env) | |
879 | SCM xorig; | |
880 | SCM env; | |
0f2d19dd JB |
881 | { |
882 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, xorig, s_expression, "@apply"); | |
883 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); | |
884 | } | |
885 | ||
e2806c10 | 886 | #define s_atcall_cc (SCM_ISYMCHARS(SCM_IM_CONT)+1) |
0f2d19dd | 887 | |
1cc91f1b | 888 | |
0f2d19dd JB |
889 | SCM |
890 | scm_m_cont (xorig, env) | |
891 | SCM xorig; | |
892 | SCM env; | |
0f2d19dd JB |
893 | { |
894 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "@call-with-current-continuation"); | |
895 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); | |
896 | } | |
897 | ||
6dbd0af5 MD |
898 | /* scm_unmemocopy takes a memoized expression together with its |
899 | * environment and rewrites it to its original form. Thus, it is the | |
900 | * inversion of the rewrite rules above. The procedure is not | |
901 | * optimized for speed. It's used in scm_iprin1 when printing the | |
902 | * code of a closure, in scm_procedure_source and in scm_expr_stack | |
903 | * when generating the source for a stackframe. | |
904 | */ | |
905 | ||
1cc91f1b JB |
906 | |
907 | static SCM unmemocopy SCM_P ((SCM x, SCM env)); | |
908 | ||
6dbd0af5 MD |
909 | static SCM |
910 | unmemocopy (x, env) | |
911 | SCM x; | |
912 | SCM env; | |
6dbd0af5 MD |
913 | { |
914 | SCM ls, z; | |
915 | #ifdef DEBUG_EXTENSIONS | |
916 | SCM p; | |
917 | #endif | |
918 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
919 | return x; | |
920 | #ifdef DEBUG_EXTENSIONS | |
921 | p = scm_whash_lookup (scm_source_whash, x); | |
922 | #endif | |
923 | switch (SCM_TYP7 (x)) | |
924 | { | |
925 | case (127 & SCM_IM_AND): | |
926 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
927 | break; | |
928 | case (127 & SCM_IM_BEGIN): | |
929 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
930 | break; | |
931 | case (127 & SCM_IM_CASE): | |
932 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
933 | break; | |
934 | case (127 & SCM_IM_COND): | |
935 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
936 | break; | |
937 | case (127 & SCM_IM_DO): | |
938 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
939 | goto transform; | |
940 | case (127 & SCM_IM_IF): | |
941 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
942 | break; | |
943 | case (127 & SCM_IM_LET): | |
944 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
945 | goto transform; | |
946 | case (127 & SCM_IM_LETREC): | |
947 | { | |
948 | SCM f, v, e, s; | |
949 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
950 | transform: | |
951 | x = SCM_CDR (x); | |
952 | f = v = SCM_CAR (x); | |
953 | x = SCM_CDR (x); | |
e2806c10 | 954 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
955 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
956 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
957 | env = z; | |
958 | s = SCM_CAR (ls) == scm_i_do | |
959 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
960 | : f; | |
961 | z = SCM_EOL; | |
962 | do | |
963 | { | |
964 | z = scm_acons (SCM_CAR (v), | |
965 | scm_cons (SCM_CAR (e), | |
966 | SCM_CAR (s) == SCM_CAR (v) | |
967 | ? SCM_EOL | |
968 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
969 | z); | |
970 | v = SCM_CDR (v); | |
971 | e = SCM_CDR (e); | |
972 | s = SCM_CDR (s); | |
973 | } | |
974 | while SCM_NIMP (v); | |
a23afe53 MD |
975 | z = scm_cons (z, SCM_UNSPECIFIED); |
976 | SCM_SETCDR (ls, z); | |
6dbd0af5 MD |
977 | if (SCM_CAR (ls) == scm_i_do) |
978 | { | |
979 | x = SCM_CDR (x); | |
a23afe53 | 980 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 981 | SCM_UNSPECIFIED)); |
a23afe53 MD |
982 | z = SCM_CDR (z); |
983 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
6dbd0af5 MD |
984 | } |
985 | break; | |
986 | } | |
987 | case (127 & SCM_IM_LETSTAR): | |
988 | { | |
989 | SCM b, y; | |
990 | x = SCM_CDR (x); | |
991 | b = SCM_CAR (x); | |
992 | y = SCM_EOL; | |
993 | if SCM_IMP (b) | |
994 | { | |
e2806c10 | 995 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
996 | goto letstar; |
997 | } | |
998 | y = z = scm_acons (SCM_CAR (b), | |
999 | unmemocar ( | |
1000 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1001 | SCM_UNSPECIFIED); | |
e2806c10 | 1002 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1003 | b = SCM_CDR (SCM_CDR (b)); |
1004 | if (SCM_IMP (b)) | |
1005 | { | |
1006 | SCM_SETCDR (y, SCM_EOL); | |
1007 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1008 | break; | |
1009 | } | |
1010 | do | |
1011 | { | |
a23afe53 MD |
1012 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1013 | unmemocar ( | |
6dbd0af5 | 1014 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1015 | SCM_UNSPECIFIED)); |
1016 | z = SCM_CDR (z); | |
e2806c10 | 1017 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1018 | b = SCM_CDR (SCM_CDR (b)); |
1019 | } | |
1020 | while SCM_NIMP (b); | |
a23afe53 | 1021 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 MD |
1022 | letstar: |
1023 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1024 | break; | |
1025 | } | |
1026 | case (127 & SCM_IM_OR): | |
1027 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1028 | break; | |
1029 | case (127 & SCM_IM_LAMBDA): | |
1030 | x = SCM_CDR (x); | |
1031 | ls = scm_cons (scm_i_lambda, | |
1032 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1033 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1034 | break; |
1035 | case (127 & SCM_IM_QUOTE): | |
1036 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1037 | break; | |
1038 | case (127 & SCM_IM_SET): | |
1039 | ls = z = scm_cons (scm_i_set, SCM_UNSPECIFIED); | |
1040 | break; | |
1041 | case (127 & SCM_IM_DEFINE): | |
1042 | { | |
1043 | SCM n; | |
1044 | x = SCM_CDR (x); | |
1045 | ls = scm_cons (scm_i_define, | |
1046 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1047 | if (SCM_NNULLP (env)) | |
a23afe53 | 1048 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1049 | break; |
1050 | } | |
1051 | case (127 & SCM_MAKISYM (0)): | |
1052 | z = SCM_CAR (x); | |
1053 | if (!SCM_ISYMP (z)) | |
1054 | goto unmemo; | |
1055 | switch SCM_ISYMNUM (z) | |
1056 | { | |
1057 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1058 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1059 | goto loop; | |
1060 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1061 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1062 | goto loop; | |
1063 | default: | |
fa888178 | 1064 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1065 | } |
1066 | unmemo: | |
1067 | default: | |
1068 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1069 | SCM_UNSPECIFIED), | |
1070 | env); | |
1071 | } | |
1072 | loop: | |
1073 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 MD |
1074 | { |
1075 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1076 | SCM_UNSPECIFIED), | |
1077 | env)); | |
1078 | z = SCM_CDR (z); | |
1079 | } | |
1080 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1081 | #ifdef DEBUG_EXTENSIONS |
1082 | if (SCM_NFALSEP (p)) | |
1083 | scm_whash_insert (scm_source_whash, ls, p); | |
1084 | #endif | |
1085 | return ls; | |
1086 | } | |
1087 | ||
1cc91f1b | 1088 | |
6dbd0af5 MD |
1089 | SCM |
1090 | scm_unmemocopy (x, env) | |
1091 | SCM x; | |
1092 | SCM env; | |
6dbd0af5 MD |
1093 | { |
1094 | if (SCM_NNULLP (env)) | |
1095 | /* Make a copy of the lowest frame to protect it from | |
1096 | modifications by SCM_IM_DEFINE */ | |
1097 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1098 | else | |
1099 | return unmemocopy (x, env); | |
1100 | } | |
1101 | ||
0f2d19dd | 1102 | #ifndef RECKLESS |
1cc91f1b | 1103 | |
0f2d19dd JB |
1104 | int |
1105 | scm_badargsp (formals, args) | |
1106 | SCM formals; | |
1107 | SCM args; | |
0f2d19dd JB |
1108 | { |
1109 | while SCM_NIMP | |
1110 | (formals) | |
1111 | { | |
1112 | if SCM_NCONSP | |
1113 | (formals) return 0; | |
1114 | if SCM_IMP | |
1115 | (args) return 1; | |
1116 | formals = SCM_CDR (formals); | |
1117 | args = SCM_CDR (args); | |
1118 | } | |
1119 | return SCM_NNULLP (args) ? 1 : 0; | |
1120 | } | |
1121 | #endif | |
1122 | ||
1123 | ||
1124 | \f | |
1125 | long scm_tc16_macro; | |
1126 | ||
1cc91f1b | 1127 | |
6dbd0af5 MD |
1128 | SCM |
1129 | scm_eval_args (l, env) | |
1130 | SCM l; | |
1131 | SCM env; | |
6dbd0af5 MD |
1132 | { |
1133 | SCM res = SCM_EOL, *lloc = &res; | |
1134 | while (SCM_NIMP (l)) | |
1135 | { | |
1136 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
a23afe53 | 1137 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1138 | l = SCM_CDR (l); |
1139 | } | |
1140 | return res; | |
1141 | } | |
0f2d19dd JB |
1142 | #endif /* !DEVAL */ |
1143 | ||
6dbd0af5 MD |
1144 | |
1145 | /* SECTION: This code is specific for the debugging support. One | |
1146 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1147 | * defined. | |
1148 | */ | |
1149 | ||
1150 | #ifndef DEVAL | |
1151 | ||
1152 | #define SCM_APPLY scm_apply | |
1153 | #define PREP_APPLY(proc, args) | |
1154 | #define ENTER_APPLY | |
1155 | #define RETURN(x) return x; | |
b7ff98dd MD |
1156 | #ifdef STACK_CHECKING |
1157 | #ifndef NO_CEVAL_STACK_CHECKING | |
1158 | #define EVAL_STACK_CHECKING | |
1159 | #endif | |
6dbd0af5 MD |
1160 | #endif |
1161 | ||
1162 | #else /* !DEVAL */ | |
1163 | ||
0f2d19dd JB |
1164 | #undef SCM_CEVAL |
1165 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1166 | #undef SCM_APPLY | |
1167 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1168 | #undef PREP_APPLY |
1169 | #define PREP_APPLY(p, l) \ | |
1170 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1171 | #undef ENTER_APPLY | |
1172 | #define ENTER_APPLY \ | |
1173 | {\ | |
b7ff98dd | 1174 | SCM_SET_ARGSREADY (debug);\ |
6dbd0af5 | 1175 | if (CHECK_APPLY)\ |
b7ff98dd | 1176 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1177 | {\ |
b7ff98dd MD |
1178 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
1179 | SCM_SET_TRACED_FRAME (debug);\ | |
1180 | if (SCM_CHEAPTRAPS_P)\ | |
6dbd0af5 | 1181 | {\ |
c0ab1b8d | 1182 | tmp = scm_make_debugobj (&debug);\ |
6dbd0af5 MD |
1183 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
1184 | }\ | |
1185 | else\ | |
1186 | {\ | |
1187 | scm_make_cont (&tmp);\ | |
1188 | if (!setjmp (SCM_JMPBUF (tmp)))\ | |
1189 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ | |
1190 | }\ | |
1191 | }\ | |
1192 | } | |
0f2d19dd JB |
1193 | #undef RETURN |
1194 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1195 | #ifdef STACK_CHECKING |
1196 | #ifndef EVAL_STACK_CHECKING | |
1197 | #define EVAL_STACK_CHECKING | |
1198 | #endif | |
6dbd0af5 MD |
1199 | #endif |
1200 | ||
1201 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1202 | * *fixme*: Although efficiency is important here, this state variable | |
1203 | * should probably not be a global. It should be related to the | |
1204 | * current repl. | |
1205 | */ | |
1206 | ||
1cc91f1b JB |
1207 | |
1208 | SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env)); | |
0f2d19dd | 1209 | |
1646d37b | 1210 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1211 | * information stack frame. It is accessed very often from the |
1212 | * debugging evaluator, so it should probably not be indirectly | |
1213 | * addressed. Better to save and restore it from the current root at | |
1214 | * any stack swaps. | |
1215 | */ | |
1216 | ||
1646d37b MD |
1217 | #ifndef USE_THREADS |
1218 | scm_debug_frame *scm_last_debug_frame; | |
1219 | #endif | |
6dbd0af5 MD |
1220 | |
1221 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1222 | * stack frames at each real stack frame. | |
1223 | */ | |
1224 | ||
1225 | int scm_debug_eframe_size; | |
1226 | ||
b7ff98dd | 1227 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 MD |
1228 | |
1229 | scm_option scm_debug_opts[] = { | |
b7ff98dd MD |
1230 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1231 | "*Flyweight representation of the stack at traps." }, | |
1232 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1233 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1234 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1235 | "Record procedure names at definition." }, | |
1236 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1237 | "Display backtrace in anti-chronological order." }, | |
4e646a03 MD |
1238 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1239 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1240 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1241 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1242 | "Maximal number of stored backtrace frames." }, | |
1243 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1244 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1245 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
b7ff98dd | 1246 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (0 = no check)." } |
6dbd0af5 MD |
1247 | }; |
1248 | ||
1249 | scm_option scm_evaluator_trap_table[] = { | |
b7ff98dd MD |
1250 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1251 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1252 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1253 | }; |
1254 | ||
1255 | SCM | |
1256 | scm_deval_args (l, env, lloc) | |
1257 | SCM l, env, *lloc; | |
0f2d19dd | 1258 | { |
6dbd0af5 | 1259 | SCM *res = lloc; |
0f2d19dd JB |
1260 | while (SCM_NIMP (l)) |
1261 | { | |
1262 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
a23afe53 | 1263 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1264 | l = SCM_CDR (l); |
1265 | } | |
6dbd0af5 | 1266 | return *res; |
0f2d19dd JB |
1267 | } |
1268 | ||
6dbd0af5 MD |
1269 | #endif /* !DEVAL */ |
1270 | ||
1271 | ||
1272 | /* SECTION: Some local definitions for the evaluator. | |
1273 | */ | |
1274 | ||
1275 | #ifndef DEVAL | |
1276 | #ifdef SCM_FLOATS | |
1277 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1278 | #else | |
1279 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1280 | #endif | |
1281 | #endif /* DEVAL */ | |
1282 | ||
1283 | ||
1284 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1285 | * three heads. This code is compiled twice. | |
1286 | */ | |
1287 | ||
0f2d19dd | 1288 | #if 0 |
1cc91f1b | 1289 | |
0f2d19dd JB |
1290 | SCM |
1291 | scm_ceval (x, env) | |
1292 | SCM x; | |
1293 | SCM env; | |
0f2d19dd JB |
1294 | {} |
1295 | #endif | |
1296 | #if 0 | |
1cc91f1b | 1297 | |
0f2d19dd JB |
1298 | SCM |
1299 | scm_deval (x, env) | |
1300 | SCM x; | |
1301 | SCM env; | |
0f2d19dd JB |
1302 | {} |
1303 | #endif | |
1304 | ||
1cc91f1b | 1305 | |
6dbd0af5 | 1306 | SCM |
0f2d19dd JB |
1307 | SCM_CEVAL (x, env) |
1308 | SCM x; | |
1309 | SCM env; | |
1310 | { | |
1311 | union | |
1312 | { | |
1313 | SCM *lloc; | |
1314 | SCM arg1; | |
1315 | } t; | |
6dbd0af5 MD |
1316 | SCM proc, arg2; |
1317 | #ifdef DEVAL | |
c0ab1b8d JB |
1318 | scm_debug_frame debug; |
1319 | scm_debug_info *debug_info_end; | |
1646d37b | 1320 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1321 | debug.status = scm_debug_eframe_size; |
c0ab1b8d JB |
1322 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1323 | * sizeof (debug.vect[0])); | |
1324 | debug.info = debug.vect; | |
1325 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1326 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1327 | #endif |
b7ff98dd MD |
1328 | #ifdef EVAL_STACK_CHECKING |
1329 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1330 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1331 | { |
b7ff98dd | 1332 | #ifdef DEVAL |
6dbd0af5 MD |
1333 | debug.info->e.exp = x; |
1334 | debug.info->e.env = env; | |
b7ff98dd | 1335 | #endif |
6dbd0af5 MD |
1336 | scm_report_stack_overflow (); |
1337 | } | |
1338 | #endif | |
1339 | #ifdef DEVAL | |
1340 | goto start; | |
1341 | #endif | |
1342 | loopnoap: | |
1343 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1344 | loop: | |
1345 | #ifdef DEVAL | |
1346 | #if 0 /* This will probably never have any practical use ... */ | |
1347 | if (CHECK_EXIT) | |
1348 | { | |
b7ff98dd | 1349 | if (SINGLE_STEP || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 MD |
1350 | { |
1351 | SINGLE_STEP = 0; | |
b7ff98dd MD |
1352 | SCM_RESET_DEBUG_MODE; |
1353 | SCM_CLEAR_TRACED_FRAME (debug); | |
6dbd0af5 MD |
1354 | scm_make_cont (&t.arg1); |
1355 | if (!setjmp (SCM_JMPBUF (t.arg1))) | |
1356 | scm_ithrow (scm_i_exit_tail, scm_cons (t.arg1, SCM_EOL), 0); | |
1357 | } | |
1358 | } | |
1359 | nextframe: | |
1360 | #endif | |
b7ff98dd MD |
1361 | SCM_CLEAR_ARGSREADY (debug); |
1362 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1363 | --debug.info; |
c0ab1b8d | 1364 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1365 | { |
b7ff98dd | 1366 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1367 | debug.info -= 2; |
1368 | } | |
1369 | start: | |
1370 | debug.info->e.exp = x; | |
1371 | debug.info->e.env = env; | |
1372 | if (CHECK_ENTRY) | |
b7ff98dd | 1373 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1374 | { |
b7ff98dd MD |
1375 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1376 | SCM_SET_TAILREC (debug); | |
1377 | SCM_ENTER_FRAME_P = 0; | |
1378 | SCM_RESET_DEBUG_MODE; | |
1379 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 1380 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1381 | else |
1382 | { | |
1383 | scm_make_cont (&t.arg1); | |
1384 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1385 | { | |
1386 | x = SCM_THROW_VALUE (t.arg1); | |
1387 | if (SCM_IMP (x)) | |
1388 | { | |
1389 | RETURN (x); | |
1390 | } | |
1391 | else | |
1392 | /* This gives the possibility for the debugger to | |
1393 | modify the source expression before evaluation. */ | |
1394 | goto dispatch; | |
1395 | } | |
1396 | } | |
1397 | scm_ithrow (scm_i_enter_frame, | |
1398 | scm_cons2 (t.arg1, tail, | |
1399 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1400 | 0); | |
1401 | } | |
1402 | dispatch: | |
1403 | #endif | |
0f2d19dd | 1404 | SCM_ASYNC_TICK; |
0f2d19dd JB |
1405 | switch (SCM_TYP7 (x)) |
1406 | { | |
1407 | case scm_tcs_symbols: | |
1408 | /* Only happens when called at top level. | |
1409 | */ | |
1410 | x = scm_cons (x, SCM_UNDEFINED); | |
1411 | goto retval; | |
1412 | ||
1413 | case (127 & SCM_IM_AND): | |
1414 | x = SCM_CDR (x); | |
1415 | t.arg1 = x; | |
1416 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1417 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1418 | { | |
1419 | RETURN (SCM_BOOL_F); | |
1420 | } | |
1421 | else | |
1422 | x = t.arg1; | |
6dbd0af5 | 1423 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1424 | goto carloop; |
1425 | ||
1426 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1427 | cdrxnoap: |
1428 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1429 | cdrxbegin: |
1430 | x = SCM_CDR (x); | |
1431 | ||
1432 | begin: | |
1433 | t.arg1 = x; | |
1434 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1435 | { | |
1436 | SIDEVAL (SCM_CAR (x), env); | |
1437 | x = t.arg1; | |
1438 | } | |
1439 | ||
1440 | carloop: /* scm_eval car of last form in list */ | |
1441 | if (SCM_NCELLP (SCM_CAR (x))) | |
1442 | { | |
1443 | x = SCM_CAR (x); | |
6dbd0af5 | 1444 | RETURN (SCM_IMP (x) ? EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1445 | } |
1446 | ||
1447 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1448 | { | |
1449 | retval: | |
6dbd0af5 | 1450 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1451 | } |
1452 | ||
1453 | x = SCM_CAR (x); | |
1454 | goto loop; /* tail recurse */ | |
1455 | ||
1456 | ||
1457 | case (127 & SCM_IM_CASE): | |
1458 | x = SCM_CDR (x); | |
1459 | t.arg1 = EVALCAR (x, env); | |
1460 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1461 | { | |
1462 | proc = SCM_CAR (x); | |
1463 | if (scm_i_else == SCM_CAR (proc)) | |
1464 | { | |
1465 | x = SCM_CDR (proc); | |
6dbd0af5 | 1466 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1467 | goto begin; |
1468 | } | |
1469 | proc = SCM_CAR (proc); | |
1470 | while (SCM_NIMP (proc)) | |
1471 | { | |
1472 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1473 | { | |
1474 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1475 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1476 | goto begin; |
1477 | } | |
1478 | proc = SCM_CDR (proc); | |
1479 | } | |
1480 | } | |
6dbd0af5 | 1481 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1482 | |
1483 | ||
1484 | case (127 & SCM_IM_COND): | |
1485 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1486 | { | |
1487 | proc = SCM_CAR (x); | |
1488 | t.arg1 = EVALCAR (proc, env); | |
1489 | if (SCM_NFALSEP (t.arg1)) | |
1490 | { | |
1491 | x = SCM_CDR (proc); | |
6dbd0af5 | 1492 | if SCM_NULLP (x) |
0f2d19dd | 1493 | { |
6dbd0af5 | 1494 | RETURN (t.arg1) |
0f2d19dd JB |
1495 | } |
1496 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1497 | { |
1498 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1499 | goto begin; | |
1500 | } | |
0f2d19dd JB |
1501 | proc = SCM_CDR (x); |
1502 | proc = EVALCAR (proc, env); | |
1503 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1504 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1505 | ENTER_APPLY; | |
0f2d19dd JB |
1506 | goto evap1; |
1507 | } | |
1508 | } | |
6dbd0af5 | 1509 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1510 | |
1511 | ||
1512 | case (127 & SCM_IM_DO): | |
1513 | x = SCM_CDR (x); | |
1514 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1515 | t.arg1 = SCM_EOL; /* values */ | |
1516 | while (SCM_NIMP (proc)) | |
1517 | { | |
1518 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1519 | proc = SCM_CDR (proc); | |
1520 | } | |
e2806c10 | 1521 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1522 | x = SCM_CDR (SCM_CDR (x)); |
1523 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1524 | { | |
1525 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1526 | { | |
1527 | t.arg1 = SCM_CAR (proc); /* body */ | |
1528 | SIDEVAL (t.arg1, env); | |
1529 | } | |
1530 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1531 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1532 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1533 | } |
1534 | x = SCM_CDR (proc); | |
1535 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1536 | RETURN (SCM_UNSPECIFIED); |
1537 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1538 | goto begin; |
1539 | ||
1540 | ||
1541 | case (127 & SCM_IM_IF): | |
1542 | x = SCM_CDR (x); | |
1543 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1544 | x = SCM_CDR (x); | |
1545 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1546 | { | |
1547 | RETURN (SCM_UNSPECIFIED); | |
1548 | } | |
6dbd0af5 | 1549 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1550 | goto carloop; |
1551 | ||
1552 | ||
1553 | case (127 & SCM_IM_LET): | |
1554 | x = SCM_CDR (x); | |
1555 | proc = SCM_CAR (SCM_CDR (x)); | |
1556 | t.arg1 = SCM_EOL; | |
1557 | do | |
1558 | { | |
1559 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1560 | } | |
1561 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1562 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1563 | x = SCM_CDR (x); |
6dbd0af5 | 1564 | goto cdrxnoap; |
0f2d19dd JB |
1565 | |
1566 | ||
1567 | case (127 & SCM_IM_LETREC): | |
1568 | x = SCM_CDR (x); | |
e2806c10 | 1569 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1570 | x = SCM_CDR (x); |
1571 | proc = SCM_CAR (x); | |
1572 | t.arg1 = SCM_EOL; | |
1573 | do | |
1574 | { | |
1575 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1576 | } | |
1577 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 1578 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 1579 | goto cdrxnoap; |
0f2d19dd JB |
1580 | |
1581 | ||
1582 | case (127 & SCM_IM_LETSTAR): | |
1583 | x = SCM_CDR (x); | |
1584 | proc = SCM_CAR (x); | |
1585 | if (SCM_IMP (proc)) | |
1586 | { | |
e2806c10 | 1587 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1588 | goto cdrxnoap; |
0f2d19dd JB |
1589 | } |
1590 | do | |
1591 | { | |
1592 | t.arg1 = SCM_CAR (proc); | |
1593 | proc = SCM_CDR (proc); | |
e2806c10 | 1594 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1595 | } |
1596 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1597 | goto cdrxnoap; |
0f2d19dd JB |
1598 | |
1599 | case (127 & SCM_IM_OR): | |
1600 | x = SCM_CDR (x); | |
1601 | t.arg1 = x; | |
1602 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1603 | { | |
1604 | x = EVALCAR (x, env); | |
1605 | if (SCM_NFALSEP (x)) | |
1606 | { | |
1607 | RETURN (x); | |
1608 | } | |
1609 | x = t.arg1; | |
1610 | } | |
6dbd0af5 | 1611 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1612 | goto carloop; |
1613 | ||
1614 | ||
1615 | case (127 & SCM_IM_LAMBDA): | |
1616 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1617 | ||
1618 | ||
1619 | case (127 & SCM_IM_QUOTE): | |
1620 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1621 | ||
1622 | ||
1623 | case (127 & SCM_IM_SET): | |
0f2d19dd JB |
1624 | x = SCM_CDR (x); |
1625 | proc = SCM_CAR (x); | |
6dbd0af5 | 1626 | switch (7 & (int) proc) |
0f2d19dd JB |
1627 | { |
1628 | case 0: | |
1629 | t.lloc = scm_lookupcar (x, env); | |
1630 | break; | |
1631 | case 1: | |
a23afe53 | 1632 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
1633 | break; |
1634 | #ifdef MEMOIZE_LOCALS | |
1635 | case 4: | |
1636 | t.lloc = scm_ilookup (proc, env); | |
1637 | break; | |
1638 | #endif | |
1639 | } | |
1640 | x = SCM_CDR (x); | |
1641 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1642 | #ifdef SICP |
1643 | RETURN (*t.lloc); | |
1644 | #else | |
1645 | RETURN (SCM_UNSPECIFIED); | |
1646 | #endif | |
1647 | ||
1648 | ||
1649 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1650 | x = SCM_CDR (x); | |
1651 | proc = SCM_CAR (x); | |
1652 | x = SCM_CDR (x); | |
1653 | x = evalcar (x, env); | |
6dbd0af5 | 1654 | #ifdef DEBUG_EXTENSIONS |
b7ff98dd | 1655 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x) && SCM_CLOSUREP (x)) |
6dbd0af5 MD |
1656 | scm_set_procedure_property_x (x, scm_i_name, proc); |
1657 | #endif | |
0f2d19dd JB |
1658 | env = SCM_CAR (env); |
1659 | SCM_DEFER_INTS; | |
a23afe53 MD |
1660 | SCM_SETCAR (env, scm_cons (proc, SCM_CAR (env))); |
1661 | SCM_SETCDR (env, scm_cons (x, SCM_CDR (env))); | |
0f2d19dd JB |
1662 | SCM_ALLOW_INTS; |
1663 | RETURN (SCM_UNSPECIFIED); | |
1664 | ||
1665 | ||
0f2d19dd JB |
1666 | /* new syntactic forms go here. */ |
1667 | case (127 & SCM_MAKISYM (0)): | |
1668 | proc = SCM_CAR (x); | |
1669 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1670 | switch SCM_ISYMNUM (proc) | |
1671 | { | |
1672 | #if 0 | |
1673 | case (SCM_ISYMNUM (IM_VREF)): | |
1674 | { | |
1675 | SCM var; | |
1676 | var = SCM_CAR (SCM_CDR (x)); | |
1677 | RETURN (SCM_CDR(var)); | |
1678 | } | |
1679 | case (SCM_ISYMNUM (IM_VSET)): | |
1680 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1681 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1682 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1683 | #endif |
1684 | ||
1685 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1686 | proc = SCM_CDR (x); | |
1687 | proc = EVALCAR (proc, env); | |
1688 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1689 | if (SCM_CLOSUREP (proc)) | |
1690 | { | |
6dbd0af5 | 1691 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1692 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1693 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1694 | #ifdef DEVAL |
1695 | debug.info->a.args = t.arg1; | |
1696 | #endif | |
0f2d19dd JB |
1697 | #ifndef RECKLESS |
1698 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) | |
1699 | goto wrongnumargs; | |
1700 | #endif | |
e2806c10 | 1701 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), t.arg1, SCM_ENV (proc)); |
0f2d19dd JB |
1702 | x = SCM_CODE (proc); |
1703 | goto cdrxbegin; | |
1704 | } | |
1705 | proc = scm_i_apply; | |
1706 | goto evapply; | |
1707 | ||
1708 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1709 | scm_make_cont (&t.arg1); | |
1710 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1711 | { | |
1712 | SCM val; | |
1713 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1714 | RETURN (val); |
0f2d19dd JB |
1715 | } |
1716 | proc = SCM_CDR (x); | |
1717 | proc = evalcar (proc, env); | |
1718 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1719 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1720 | ENTER_APPLY; | |
0f2d19dd JB |
1721 | goto evap1; |
1722 | ||
1723 | default: | |
1724 | goto badfun; | |
1725 | } | |
1726 | ||
1727 | default: | |
1728 | proc = x; | |
1729 | badfun: | |
f5bf2977 | 1730 | /* scm_everr (x, env,...) */ |
523f5266 GH |
1731 | scm_misc_error (NULL, |
1732 | "Wrong type to apply: %S", | |
1733 | scm_listify (proc, SCM_UNDEFINED)); | |
0f2d19dd JB |
1734 | case scm_tc7_vector: |
1735 | case scm_tc7_wvect: | |
1736 | case scm_tc7_bvect: | |
1737 | case scm_tc7_byvect: | |
1738 | case scm_tc7_svect: | |
1739 | case scm_tc7_ivect: | |
1740 | case scm_tc7_uvect: | |
1741 | case scm_tc7_fvect: | |
1742 | case scm_tc7_dvect: | |
1743 | case scm_tc7_cvect: | |
1744 | #ifdef LONGLONGS | |
1745 | case scm_tc7_llvect: | |
1746 | #endif | |
1747 | case scm_tc7_string: | |
1748 | case scm_tc7_mb_string: | |
1749 | case scm_tc7_substring: | |
1750 | case scm_tc7_mb_substring: | |
1751 | case scm_tc7_smob: | |
1752 | case scm_tcs_closures: | |
1753 | case scm_tcs_subrs: | |
1754 | RETURN (x); | |
1755 | ||
1756 | #ifdef MEMOIZE_LOCALS | |
1757 | case (127 & SCM_ILOC00): | |
1758 | proc = *scm_ilookup (SCM_CAR (x), env); | |
1759 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1760 | #ifndef RECKLESS | |
1761 | #ifdef CAUTIOUS | |
1762 | goto checkargs; | |
1763 | #endif | |
1764 | #endif | |
1765 | break; | |
1766 | #endif /* ifdef MEMOIZE_LOCALS */ | |
1767 | ||
1768 | ||
1769 | case scm_tcs_cons_gloc: | |
1770 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
1771 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1772 | #ifndef RECKLESS | |
1773 | #ifdef CAUTIOUS | |
1774 | goto checkargs; | |
1775 | #endif | |
1776 | #endif | |
1777 | break; | |
1778 | ||
1779 | ||
1780 | case scm_tcs_cons_nimcar: | |
1781 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1782 | { | |
1783 | proc = *scm_lookupcar (x, env); | |
1784 | if (SCM_IMP (proc)) | |
1785 | { | |
1786 | unmemocar (x, env); | |
1787 | goto badfun; | |
1788 | } | |
1789 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1790 | { | |
1791 | unmemocar (x, env); | |
1792 | ||
1793 | handle_a_macro: | |
1794 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1795 | switch ((int) (SCM_CAR (proc) >> 16)) | |
1796 | { | |
1797 | case 2: | |
1798 | if (scm_ilength (t.arg1) <= 0) | |
1799 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
1800 | #ifdef DEVAL |
1801 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
1802 | { | |
1803 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ | |
1804 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
1805 | /* Prevent memoizing result of define macro */ | |
1806 | { | |
1807 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1808 | scm_set_source_properties_x (debug.info->e.exp, | |
1809 | scm_source_properties (x)); | |
1810 | } | |
1811 | #endif | |
1812 | SCM_DEFER_INTS; | |
a23afe53 MD |
1813 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
1814 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
1815 | SCM_ALLOW_INTS; |
1816 | goto dispatch; | |
1817 | } | |
1818 | /* Prevent memoizing of debug info expression. */ | |
1819 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1820 | scm_set_source_properties_x (debug.info->e.exp, | |
1821 | scm_source_properties (x)); | |
1822 | #endif | |
0f2d19dd | 1823 | SCM_DEFER_INTS; |
a23afe53 MD |
1824 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
1825 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 1826 | SCM_ALLOW_INTS; |
6dbd0af5 | 1827 | goto loopnoap; |
0f2d19dd JB |
1828 | case 1: |
1829 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 1830 | goto loopnoap; |
0f2d19dd JB |
1831 | case 0: |
1832 | RETURN (t.arg1); | |
1833 | } | |
1834 | } | |
1835 | } | |
1836 | else | |
1837 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
1838 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1839 | #ifndef RECKLESS | |
1840 | #ifdef CAUTIOUS | |
1841 | checkargs: | |
1842 | #endif | |
1843 | if (SCM_CLOSUREP (proc)) | |
1844 | { | |
1845 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
1846 | t.arg1 = SCM_CDR (x); | |
1847 | while (SCM_NIMP (arg2)) | |
1848 | { | |
1849 | if (SCM_NCONSP (arg2)) | |
1850 | goto evapply; | |
1851 | if (SCM_IMP (t.arg1)) | |
1852 | goto umwrongnumargs; | |
1853 | arg2 = SCM_CDR (arg2); | |
1854 | t.arg1 = SCM_CDR (t.arg1); | |
1855 | } | |
1856 | if (SCM_NNULLP (t.arg1)) | |
1857 | goto umwrongnumargs; | |
1858 | } | |
1859 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1860 | goto handle_a_macro; | |
1861 | #endif | |
1862 | } | |
1863 | ||
1864 | ||
6dbd0af5 MD |
1865 | evapply: |
1866 | PREP_APPLY (proc, SCM_EOL); | |
1867 | if (SCM_NULLP (SCM_CDR (x))) { | |
1868 | ENTER_APPLY; | |
0f2d19dd JB |
1869 | switch (SCM_TYP7 (proc)) |
1870 | { /* no arguments given */ | |
1871 | case scm_tc7_subr_0: | |
1872 | RETURN (SCM_SUBRF (proc) ()); | |
1873 | case scm_tc7_subr_1o: | |
1874 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
1875 | case scm_tc7_lsubr: | |
1876 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
1877 | case scm_tc7_rpsubr: | |
1878 | RETURN (SCM_BOOL_T); | |
1879 | case scm_tc7_asubr: | |
1880 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 1881 | #ifdef CCLO |
0f2d19dd JB |
1882 | case scm_tc7_cclo: |
1883 | t.arg1 = proc; | |
1884 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
1885 | #ifdef DEVAL |
1886 | debug.info->a.proc = proc; | |
1887 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
1888 | #endif | |
0f2d19dd | 1889 | goto evap1; |
6dbd0af5 | 1890 | #endif |
0f2d19dd JB |
1891 | case scm_tcs_closures: |
1892 | x = SCM_CODE (proc); | |
e2806c10 | 1893 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd JB |
1894 | goto cdrxbegin; |
1895 | case scm_tc7_contin: | |
1896 | case scm_tc7_subr_1: | |
1897 | case scm_tc7_subr_2: | |
1898 | case scm_tc7_subr_2o: | |
1899 | case scm_tc7_cxr: | |
1900 | case scm_tc7_subr_3: | |
1901 | case scm_tc7_lsubr_2: | |
1902 | umwrongnumargs: | |
1903 | unmemocar (x, env); | |
1904 | wrongnumargs: | |
f5bf2977 GH |
1905 | /* scm_everr (x, env,...) */ |
1906 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
1907 | default: |
1908 | /* handle macros here */ | |
1909 | goto badfun; | |
1910 | } | |
6dbd0af5 | 1911 | } |
0f2d19dd JB |
1912 | |
1913 | /* must handle macros by here */ | |
1914 | x = SCM_CDR (x); | |
1915 | #ifdef CAUTIOUS | |
1916 | if (SCM_IMP (x)) | |
1917 | goto wrongnumargs; | |
1918 | #endif | |
1919 | t.arg1 = EVALCAR (x, env); | |
6dbd0af5 MD |
1920 | #ifdef DEVAL |
1921 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
1922 | #endif | |
0f2d19dd JB |
1923 | x = SCM_CDR (x); |
1924 | if (SCM_NULLP (x)) | |
1925 | { | |
6dbd0af5 | 1926 | ENTER_APPLY; |
0f2d19dd JB |
1927 | evap1: |
1928 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 1929 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
1930 | case scm_tc7_subr_2o: |
1931 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
1932 | case scm_tc7_subr_1: | |
1933 | case scm_tc7_subr_1o: | |
1934 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
1935 | case scm_tc7_cxr: | |
1936 | #ifdef SCM_FLOATS | |
1937 | if (SCM_SUBRF (proc)) | |
1938 | { | |
1939 | if (SCM_INUMP (t.arg1)) | |
1940 | { | |
1941 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
1942 | 0.0)); | |
1943 | } | |
1944 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
1945 | if (SCM_REALP (t.arg1)) | |
1946 | { | |
1947 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
1948 | } | |
1949 | #ifdef SCM_BIGDIG | |
1950 | if (SCM_BIGP (t.arg1)) | |
1951 | { | |
1952 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
1953 | } | |
1954 | #endif | |
1955 | floerr: | |
1956 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
1957 | } | |
1958 | #endif | |
1959 | proc = (SCM) SCM_SNAME (proc); | |
1960 | { | |
1961 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
1962 | while ('c' != *--chrs) | |
1963 | { | |
1964 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
1965 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
1966 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
1967 | } | |
1968 | RETURN (t.arg1); | |
1969 | } | |
1970 | case scm_tc7_rpsubr: | |
1971 | RETURN (SCM_BOOL_T); | |
1972 | case scm_tc7_asubr: | |
1973 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
1974 | case scm_tc7_lsubr: | |
1975 | #ifdef DEVAL | |
6dbd0af5 | 1976 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
1977 | #else |
1978 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
1979 | #endif | |
6dbd0af5 | 1980 | #ifdef CCLO |
0f2d19dd JB |
1981 | case scm_tc7_cclo: |
1982 | arg2 = t.arg1; | |
1983 | t.arg1 = proc; | |
1984 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
1985 | #ifdef DEVAL |
1986 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
1987 | debug.info->a.proc = proc; | |
1988 | #endif | |
0f2d19dd | 1989 | goto evap2; |
6dbd0af5 | 1990 | #endif |
0f2d19dd JB |
1991 | case scm_tcs_closures: |
1992 | x = SCM_CODE (proc); | |
1993 | #ifdef DEVAL | |
e2806c10 | 1994 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 1995 | #else |
e2806c10 | 1996 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
1997 | #endif |
1998 | goto cdrxbegin; | |
1999 | case scm_tc7_contin: | |
2000 | scm_call_continuation (proc, t.arg1); | |
2001 | case scm_tc7_subr_2: | |
2002 | case scm_tc7_subr_0: | |
2003 | case scm_tc7_subr_3: | |
2004 | case scm_tc7_lsubr_2: | |
2005 | goto wrongnumargs; | |
2006 | default: | |
2007 | goto badfun; | |
2008 | } | |
2009 | } | |
2010 | #ifdef CAUTIOUS | |
2011 | if (SCM_IMP (x)) | |
2012 | goto wrongnumargs; | |
2013 | #endif | |
2014 | { /* have two or more arguments */ | |
2015 | arg2 = EVALCAR (x, env); | |
6dbd0af5 MD |
2016 | #ifdef DEVAL |
2017 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2018 | #endif | |
0f2d19dd JB |
2019 | x = SCM_CDR (x); |
2020 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2021 | ENTER_APPLY; |
0f2d19dd JB |
2022 | #ifdef CCLO |
2023 | evap2: | |
2024 | #endif | |
6dbd0af5 MD |
2025 | switch (SCM_TYP7 (proc)) |
2026 | { /* have two arguments */ | |
2027 | case scm_tc7_subr_2: | |
2028 | case scm_tc7_subr_2o: | |
2029 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2030 | case scm_tc7_lsubr: | |
0f2d19dd | 2031 | #ifdef DEVAL |
6dbd0af5 MD |
2032 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2033 | #else | |
2034 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2035 | #endif |
6dbd0af5 MD |
2036 | case scm_tc7_lsubr_2: |
2037 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2038 | case scm_tc7_rpsubr: | |
2039 | case scm_tc7_asubr: | |
2040 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2041 | #ifdef CCLO | |
2042 | cclon: | |
2043 | case scm_tc7_cclo: | |
0f2d19dd | 2044 | #ifdef DEVAL |
6dbd0af5 MD |
2045 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2046 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2047 | #else |
6dbd0af5 MD |
2048 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2049 | scm_cons2 (t.arg1, arg2, | |
2050 | scm_cons (scm_eval_args (x, env), SCM_EOL)))); | |
0f2d19dd | 2051 | #endif |
6dbd0af5 MD |
2052 | /* case scm_tc7_cclo: |
2053 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2054 | arg2 = t.arg1; | |
2055 | t.arg1 = proc; | |
2056 | proc = SCM_CCLO_SUBR(proc); | |
2057 | goto evap3; */ | |
2058 | #endif | |
2059 | case scm_tc7_subr_0: | |
2060 | case scm_tc7_cxr: | |
2061 | case scm_tc7_subr_1o: | |
2062 | case scm_tc7_subr_1: | |
2063 | case scm_tc7_subr_3: | |
2064 | case scm_tc7_contin: | |
2065 | goto wrongnumargs; | |
2066 | default: | |
2067 | goto badfun; | |
2068 | case scm_tcs_closures: | |
0f2d19dd | 2069 | #ifdef DEVAL |
e2806c10 | 2070 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2071 | #else |
e2806c10 | 2072 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd | 2073 | #endif |
6dbd0af5 MD |
2074 | x = SCM_CODE (proc); |
2075 | goto cdrxbegin; | |
2076 | } | |
0f2d19dd JB |
2077 | } |
2078 | #ifdef DEVAL | |
6dbd0af5 | 2079 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
a23afe53 | 2080 | scm_deval_args (x, env, SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); |
0f2d19dd | 2081 | #endif |
6dbd0af5 MD |
2082 | ENTER_APPLY; |
2083 | switch (SCM_TYP7 (proc)) | |
2084 | { /* have 3 or more arguments */ | |
0f2d19dd | 2085 | #ifdef DEVAL |
6dbd0af5 MD |
2086 | case scm_tc7_subr_3: |
2087 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2088 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CAR (SCM_CDR (SCM_CDR (debug.info->a.args))))); | |
2089 | case scm_tc7_asubr: | |
2090 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2091 | while SCM_NIMP(x) { | |
2092 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2093 | x = SCM_CDR(x); | |
2094 | } | |
2095 | RETURN (t.arg1) */ | |
2096 | case scm_tc7_rpsubr: | |
2097 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, SCM_CDR (SCM_CDR (debug.info->a.args)), SCM_EOL))) | |
2098 | case scm_tc7_lsubr_2: | |
2099 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
2100 | case scm_tc7_lsubr: | |
2101 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2102 | #ifdef CCLO |
6dbd0af5 MD |
2103 | case scm_tc7_cclo: |
2104 | goto cclon; | |
0f2d19dd | 2105 | #endif |
6dbd0af5 | 2106 | case scm_tcs_closures: |
b7ff98dd | 2107 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2108 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2109 | debug.info->a.args, |
2110 | SCM_ENV (proc)); | |
2111 | x = SCM_CODE (proc); | |
2112 | goto cdrxbegin; | |
2113 | #else /* DEVAL */ | |
2114 | case scm_tc7_subr_3: | |
2115 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2116 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2117 | case scm_tc7_asubr: | |
2118 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2119 | while SCM_NIMP(x) { | |
2120 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2121 | x = SCM_CDR(x); | |
2122 | } | |
2123 | RETURN (t.arg1) */ | |
2124 | case scm_tc7_rpsubr: | |
2125 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, scm_eval_args (x, env), SCM_EOL))); | |
2126 | case scm_tc7_lsubr_2: | |
2127 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env))); | |
2128 | case scm_tc7_lsubr: | |
2129 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)))); | |
0f2d19dd | 2130 | #ifdef CCLO |
6dbd0af5 MD |
2131 | case scm_tc7_cclo: |
2132 | goto cclon; | |
0f2d19dd | 2133 | #endif |
6dbd0af5 MD |
2134 | case scm_tcs_closures: |
2135 | #ifdef DEVAL | |
b7ff98dd | 2136 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2137 | #endif |
e2806c10 | 2138 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2139 | scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)), |
2140 | SCM_ENV (proc)); | |
2141 | x = SCM_CODE (proc); | |
2142 | goto cdrxbegin; | |
0f2d19dd | 2143 | #endif /* DEVAL */ |
6dbd0af5 MD |
2144 | case scm_tc7_subr_2: |
2145 | case scm_tc7_subr_1o: | |
2146 | case scm_tc7_subr_2o: | |
2147 | case scm_tc7_subr_0: | |
2148 | case scm_tc7_cxr: | |
2149 | case scm_tc7_subr_1: | |
2150 | case scm_tc7_contin: | |
2151 | goto wrongnumargs; | |
2152 | default: | |
2153 | goto badfun; | |
2154 | } | |
0f2d19dd JB |
2155 | } |
2156 | #ifdef DEVAL | |
6dbd0af5 MD |
2157 | exit: |
2158 | if (CHECK_EXIT) | |
b7ff98dd | 2159 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2160 | { |
b7ff98dd MD |
2161 | SCM_EXIT_FRAME_P = 0; |
2162 | SCM_RESET_DEBUG_MODE; | |
2163 | SCM_CLEAR_TRACED_FRAME (debug); | |
2164 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2165 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2166 | else |
2167 | { | |
2168 | scm_make_cont (&t.arg1); | |
2169 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
2170 | { | |
2171 | proc = SCM_THROW_VALUE (t.arg1); | |
2172 | goto ret; | |
2173 | } | |
2174 | } | |
2175 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2176 | } | |
2177 | ret: | |
1646d37b | 2178 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2179 | return proc; |
2180 | #endif | |
2181 | } | |
2182 | ||
6dbd0af5 MD |
2183 | |
2184 | /* SECTION: This code is compiled once. | |
2185 | */ | |
2186 | ||
0f2d19dd JB |
2187 | #ifndef DEVAL |
2188 | ||
2189 | SCM_PROC(s_procedure_documentation, "procedure-documentation", 1, 0, 0, scm_procedure_documentation); | |
1cc91f1b | 2190 | |
0f2d19dd JB |
2191 | SCM |
2192 | scm_procedure_documentation (proc) | |
2193 | SCM proc; | |
0f2d19dd JB |
2194 | { |
2195 | SCM code; | |
2196 | SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc) && SCM_NIMP (proc) && SCM_TYP7 (proc) != scm_tc7_contin, | |
2197 | proc, SCM_ARG1, s_procedure_documentation); | |
2198 | switch (SCM_TYP7 (proc)) | |
2199 | { | |
2200 | case scm_tcs_closures: | |
2201 | code = SCM_CDR (SCM_CODE (proc)); | |
2202 | if (SCM_IMP (SCM_CDR (code))) | |
2203 | return SCM_BOOL_F; | |
2204 | code = SCM_CAR (code); | |
2205 | if (SCM_IMP (code)) | |
2206 | return SCM_BOOL_F; | |
2207 | if (SCM_STRINGP (code)) | |
2208 | return code; | |
2209 | default: | |
2210 | return SCM_BOOL_F; | |
2211 | /* | |
2212 | case scm_tcs_subrs: | |
2213 | #ifdef CCLO | |
2214 | case scm_tc7_cclo: | |
2215 | #endif | |
2216 | */ | |
2217 | } | |
2218 | } | |
2219 | ||
b145c172 JB |
2220 | /* This code processes the 'arg ...' parameters to apply. |
2221 | ||
2222 | (apply PROC ARG1 ... ARGS) | |
2223 | ||
2224 | The ARG1 ... arguments are consed on to the front of ARGS (which | |
2225 | must be a list), and then PROC is applied to the elements of the | |
2226 | result. apply:nconc2last takes care of building the list of | |
2227 | arguments, given (ARG1 ... ARGS). | |
2228 | ||
2229 | apply:nconc2last destroys its argument. On that topic, this code | |
2230 | came into my care with the following beautifully cryptic comment on | |
2231 | that topic: "This will only screw you if you do (scm_apply | |
2232 | scm_apply '( ... ))" If you know what they're referring to, send | |
2233 | me a patch to this comment. */ | |
2234 | ||
0f2d19dd | 2235 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); |
1cc91f1b | 2236 | |
0f2d19dd JB |
2237 | SCM |
2238 | scm_nconc2last (lst) | |
2239 | SCM lst; | |
0f2d19dd JB |
2240 | { |
2241 | SCM *lloc; | |
b145c172 | 2242 | SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2243 | lloc = &lst; |
2244 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 2245 | lloc = SCM_CDRLOC (*lloc); |
b145c172 | 2246 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2247 | *lloc = SCM_CAR (*lloc); |
2248 | return lst; | |
2249 | } | |
2250 | ||
2251 | #endif /* !DEVAL */ | |
2252 | ||
6dbd0af5 MD |
2253 | |
2254 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2255 | * It is compiled twice. | |
2256 | */ | |
2257 | ||
0f2d19dd | 2258 | #if 0 |
1cc91f1b | 2259 | |
0f2d19dd JB |
2260 | SCM |
2261 | scm_apply (proc, arg1, args) | |
2262 | SCM proc; | |
2263 | SCM arg1; | |
2264 | SCM args; | |
0f2d19dd JB |
2265 | {} |
2266 | #endif | |
2267 | ||
2268 | #if 0 | |
1cc91f1b | 2269 | |
0f2d19dd JB |
2270 | SCM |
2271 | scm_dapply (proc, arg1, args) | |
2272 | SCM proc; | |
2273 | SCM arg1; | |
2274 | SCM args; | |
0f2d19dd JB |
2275 | {} |
2276 | #endif | |
2277 | ||
1cc91f1b | 2278 | |
0f2d19dd JB |
2279 | SCM |
2280 | SCM_APPLY (proc, arg1, args) | |
2281 | SCM proc; | |
2282 | SCM arg1; | |
2283 | SCM args; | |
0f2d19dd JB |
2284 | { |
2285 | #ifdef DEBUG_EXTENSIONS | |
2286 | #ifdef DEVAL | |
6dbd0af5 | 2287 | scm_debug_frame debug; |
c0ab1b8d | 2288 | scm_debug_info debug_vect_body; |
1646d37b | 2289 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2290 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 2291 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
2292 | debug.vect[0].a.proc = proc; |
2293 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2294 | scm_last_debug_frame = &debug; |
0f2d19dd | 2295 | #else |
b7ff98dd | 2296 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2297 | return scm_dapply (proc, arg1, args); |
2298 | #endif | |
2299 | #endif | |
2300 | ||
2301 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
2302 | if (SCM_NULLP (args)) | |
2303 | { | |
2304 | if (SCM_NULLP (arg1)) | |
2305 | arg1 = SCM_UNDEFINED; | |
2306 | else | |
2307 | { | |
2308 | args = SCM_CDR (arg1); | |
2309 | arg1 = SCM_CAR (arg1); | |
2310 | } | |
2311 | } | |
2312 | else | |
2313 | { | |
2314 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ | |
2315 | args = scm_nconc2last (args); | |
2316 | } | |
0f2d19dd | 2317 | #ifdef DEVAL |
6dbd0af5 | 2318 | debug.vect[0].a.args = scm_cons (arg1, args); |
b7ff98dd | 2319 | if (SCM_ENTER_FRAME_P) |
6dbd0af5 MD |
2320 | { |
2321 | SCM tmp; | |
b7ff98dd MD |
2322 | SCM_ENTER_FRAME_P = 0; |
2323 | SCM_RESET_DEBUG_MODE; | |
2324 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2325 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2326 | else |
2327 | { | |
2328 | scm_make_cont (&tmp); | |
2329 | if (setjmp (SCM_JMPBUF (tmp))) | |
2330 | goto entap; | |
2331 | } | |
2332 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2333 | } | |
2334 | entap: | |
2335 | ENTER_APPLY; | |
2336 | #endif | |
2337 | #ifdef CCLO | |
2338 | tail: | |
0f2d19dd JB |
2339 | #endif |
2340 | switch (SCM_TYP7 (proc)) | |
2341 | { | |
2342 | case scm_tc7_subr_2o: | |
2343 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2344 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2345 | case scm_tc7_subr_2: | |
2346 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (args)), wrongnumargs); | |
2347 | args = SCM_CAR (args); | |
2348 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2349 | case scm_tc7_subr_0: | |
2350 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2351 | RETURN (SCM_SUBRF (proc) ()) | |
2352 | case scm_tc7_subr_1: | |
2353 | case scm_tc7_subr_1o: | |
2354 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2355 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2356 | case scm_tc7_cxr: | |
2357 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2358 | #ifdef SCM_FLOATS | |
2359 | if (SCM_SUBRF (proc)) | |
2360 | { | |
6dbd0af5 MD |
2361 | if (SCM_INUMP (arg1)) |
2362 | { | |
2363 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2364 | } | |
0f2d19dd | 2365 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2366 | if (SCM_REALP (arg1)) |
2367 | { | |
2368 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2369 | } | |
0f2d19dd JB |
2370 | #ifdef SCM_BIGDIG |
2371 | if SCM_BIGP | |
2372 | (arg1) | |
2373 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) | |
2374 | #endif | |
2375 | floerr: | |
2376 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2377 | } | |
2378 | #endif | |
2379 | proc = (SCM) SCM_SNAME (proc); | |
2380 | { | |
2381 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2382 | while ('c' != *--chrs) | |
2383 | { | |
2384 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2385 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2386 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2387 | } | |
2388 | RETURN (arg1) | |
2389 | } | |
2390 | case scm_tc7_subr_3: | |
2391 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2392 | case scm_tc7_lsubr: | |
2393 | #ifdef DEVAL | |
6dbd0af5 | 2394 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2395 | #else |
2396 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2397 | #endif | |
2398 | case scm_tc7_lsubr_2: | |
2399 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2400 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2401 | case scm_tc7_asubr: | |
2402 | if (SCM_NULLP (args)) | |
2403 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2404 | while (SCM_NIMP (args)) | |
2405 | { | |
2406 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2407 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2408 | args = SCM_CDR (args); | |
2409 | } | |
2410 | RETURN (arg1); | |
2411 | case scm_tc7_rpsubr: | |
2412 | if (SCM_NULLP (args)) | |
2413 | RETURN (SCM_BOOL_T); | |
2414 | while (SCM_NIMP (args)) | |
2415 | { | |
2416 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2417 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2418 | RETURN (SCM_BOOL_F); | |
2419 | arg1 = SCM_CAR (args); | |
2420 | args = SCM_CDR (args); | |
2421 | } | |
2422 | RETURN (SCM_BOOL_T); | |
2423 | case scm_tcs_closures: | |
2424 | #ifdef DEVAL | |
6dbd0af5 | 2425 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2426 | #else |
2427 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2428 | #endif | |
2429 | #ifndef RECKLESS | |
2430 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) | |
2431 | goto wrongnumargs; | |
2432 | #endif | |
e2806c10 | 2433 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), arg1, SCM_ENV (proc)); |
0f2d19dd JB |
2434 | proc = SCM_CODE (proc); |
2435 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
2436 | arg1 = EVALCAR (proc, args); | |
2437 | RETURN (arg1); | |
2438 | case scm_tc7_contin: | |
2439 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2440 | scm_call_continuation (proc, arg1); | |
2441 | #ifdef CCLO | |
2442 | case scm_tc7_cclo: | |
2443 | #ifdef DEVAL | |
6dbd0af5 MD |
2444 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
2445 | arg1 = proc; | |
2446 | proc = SCM_CCLO_SUBR (proc); | |
2447 | debug.vect[0].a.proc = proc; | |
2448 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
2449 | #else |
2450 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
2451 | arg1 = proc; |
2452 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 2453 | #endif |
0f2d19dd JB |
2454 | goto tail; |
2455 | #endif | |
2456 | wrongnumargs: | |
f5bf2977 | 2457 | scm_wrong_num_args (proc); |
0f2d19dd JB |
2458 | default: |
2459 | badproc: | |
2460 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
2461 | RETURN (arg1); | |
2462 | } | |
2463 | #ifdef DEVAL | |
6dbd0af5 MD |
2464 | exit: |
2465 | if (CHECK_EXIT) | |
b7ff98dd | 2466 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2467 | { |
b7ff98dd MD |
2468 | SCM_EXIT_FRAME_P = 0; |
2469 | SCM_RESET_DEBUG_MODE; | |
2470 | SCM_CLEAR_TRACED_FRAME (debug); | |
2471 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2472 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2473 | else |
2474 | { | |
2475 | scm_make_cont (&arg1); | |
2476 | if (setjmp (SCM_JMPBUF (arg1))) | |
2477 | { | |
2478 | proc = SCM_THROW_VALUE (arg1); | |
2479 | goto ret; | |
2480 | } | |
2481 | } | |
2482 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
2483 | } | |
2484 | ret: | |
1646d37b | 2485 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2486 | return proc; |
2487 | #endif | |
2488 | } | |
2489 | ||
6dbd0af5 MD |
2490 | |
2491 | /* SECTION: The rest of this file is only read once. | |
2492 | */ | |
2493 | ||
0f2d19dd JB |
2494 | #ifndef DEVAL |
2495 | ||
2496 | SCM_PROC(s_map, "map", 2, 0, 1, scm_map); | |
1cc91f1b | 2497 | |
0f2d19dd JB |
2498 | SCM |
2499 | scm_map (proc, arg1, args) | |
2500 | SCM proc; | |
2501 | SCM arg1; | |
2502 | SCM args; | |
0f2d19dd JB |
2503 | { |
2504 | long i; | |
2505 | SCM res = SCM_EOL; | |
2506 | SCM *pres = &res; | |
2507 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2508 | ||
2509 | if (SCM_NULLP (arg1)) | |
2510 | return res; | |
2511 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map); | |
2512 | if (SCM_NULLP (args)) | |
2513 | { | |
2514 | while (SCM_NIMP (arg1)) | |
2515 | { | |
2516 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
2517 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
a23afe53 | 2518 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
2519 | arg1 = SCM_CDR (arg1); |
2520 | } | |
2521 | return res; | |
2522 | } | |
2523 | args = scm_vector (scm_cons (arg1, args)); | |
2524 | ve = SCM_VELTS (args); | |
2525 | #ifndef RECKLESS | |
2526 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2527 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map); | |
2528 | #endif | |
2529 | while (1) | |
2530 | { | |
2531 | arg1 = SCM_EOL; | |
2532 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2533 | { | |
2534 | if SCM_IMP | |
2535 | (ve[i]) return res; | |
2536 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2537 | ve[i] = SCM_CDR (ve[i]); | |
2538 | } | |
2539 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 2540 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
2541 | } |
2542 | } | |
2543 | ||
2544 | ||
2545 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
1cc91f1b | 2546 | |
0f2d19dd JB |
2547 | SCM |
2548 | scm_for_each (proc, arg1, args) | |
2549 | SCM proc; | |
2550 | SCM arg1; | |
2551 | SCM args; | |
0f2d19dd JB |
2552 | { |
2553 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2554 | long i; | |
2555 | if SCM_NULLP (arg1) | |
2556 | return SCM_UNSPECIFIED; | |
2557 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each); | |
2558 | if SCM_NULLP (args) | |
2559 | { | |
2560 | while SCM_NIMP (arg1) | |
2561 | { | |
2562 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
2563 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
2564 | arg1 = SCM_CDR (arg1); | |
2565 | } | |
2566 | return SCM_UNSPECIFIED; | |
2567 | } | |
2568 | args = scm_vector (scm_cons (arg1, args)); | |
2569 | ve = SCM_VELTS (args); | |
2570 | #ifndef RECKLESS | |
2571 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2572 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each); | |
2573 | #endif | |
2574 | while (1) | |
2575 | { | |
2576 | arg1 = SCM_EOL; | |
2577 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2578 | { | |
2579 | if SCM_IMP | |
2580 | (ve[i]) return SCM_UNSPECIFIED; | |
2581 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2582 | ve[i] = SCM_CDR (ve[i]); | |
2583 | } | |
2584 | scm_apply (proc, arg1, SCM_EOL); | |
2585 | } | |
2586 | } | |
2587 | ||
2588 | ||
1cc91f1b | 2589 | |
0f2d19dd JB |
2590 | SCM |
2591 | scm_closure (code, env) | |
2592 | SCM code; | |
2593 | SCM env; | |
0f2d19dd JB |
2594 | { |
2595 | register SCM z; | |
2596 | SCM_NEWCELL (z); | |
2597 | SCM_SETCODE (z, code); | |
a23afe53 | 2598 | SCM_SETENV (z, env); |
0f2d19dd JB |
2599 | return z; |
2600 | } | |
2601 | ||
2602 | ||
2603 | long scm_tc16_promise; | |
1cc91f1b | 2604 | |
0f2d19dd JB |
2605 | SCM |
2606 | scm_makprom (code) | |
2607 | SCM code; | |
0f2d19dd JB |
2608 | { |
2609 | register SCM z; | |
2610 | SCM_NEWCELL (z); | |
a23afe53 MD |
2611 | SCM_SETCDR (z, code); |
2612 | SCM_SETCAR (z, scm_tc16_promise); | |
0f2d19dd JB |
2613 | return z; |
2614 | } | |
2615 | ||
2616 | ||
1cc91f1b JB |
2617 | |
2618 | static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
2619 | ||
0f2d19dd | 2620 | static int |
19402679 | 2621 | prinprom (exp, port, pstate) |
0f2d19dd JB |
2622 | SCM exp; |
2623 | SCM port; | |
19402679 | 2624 | scm_print_state *pstate; |
0f2d19dd | 2625 | { |
19402679 | 2626 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd | 2627 | scm_gen_puts (scm_regular_string, "#<promise ", port); |
19402679 MD |
2628 | SCM_SET_WRITINGP (pstate, 1); |
2629 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2630 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2631 | scm_gen_putc ('>', port); |
2632 | return !0; | |
2633 | } | |
2634 | ||
2635 | ||
2636 | SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro); | |
1cc91f1b | 2637 | |
0f2d19dd JB |
2638 | SCM |
2639 | scm_makacro (code) | |
2640 | SCM code; | |
0f2d19dd JB |
2641 | { |
2642 | register SCM z; | |
2643 | SCM_NEWCELL (z); | |
a23afe53 MD |
2644 | SCM_SETCDR (z, code); |
2645 | SCM_SETCAR (z, scm_tc16_macro); | |
0f2d19dd JB |
2646 | return z; |
2647 | } | |
2648 | ||
2649 | ||
2650 | SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro); | |
1cc91f1b | 2651 | |
0f2d19dd JB |
2652 | SCM |
2653 | scm_makmacro (code) | |
2654 | SCM code; | |
0f2d19dd JB |
2655 | { |
2656 | register SCM z; | |
2657 | SCM_NEWCELL (z); | |
a23afe53 MD |
2658 | SCM_SETCDR (z, code); |
2659 | SCM_SETCAR (z, scm_tc16_macro | (1L << 16)); | |
0f2d19dd JB |
2660 | return z; |
2661 | } | |
2662 | ||
2663 | ||
2664 | SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro); | |
1cc91f1b | 2665 | |
0f2d19dd JB |
2666 | SCM |
2667 | scm_makmmacro (code) | |
2668 | SCM code; | |
0f2d19dd JB |
2669 | { |
2670 | register SCM z; | |
2671 | SCM_NEWCELL (z); | |
a23afe53 MD |
2672 | SCM_SETCDR (z, code); |
2673 | SCM_SETCAR (z, scm_tc16_macro | (2L << 16)); | |
0f2d19dd JB |
2674 | return z; |
2675 | } | |
2676 | ||
2677 | ||
1cc91f1b JB |
2678 | |
2679 | static int prinmacro SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
2680 | ||
0f2d19dd | 2681 | static int |
19402679 | 2682 | prinmacro (exp, port, pstate) |
0f2d19dd JB |
2683 | SCM exp; |
2684 | SCM port; | |
19402679 | 2685 | scm_print_state *pstate; |
0f2d19dd | 2686 | { |
19402679 | 2687 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd JB |
2688 | if (SCM_CAR (exp) & (3L << 16)) |
2689 | scm_gen_puts (scm_regular_string, "#<macro", port); | |
2690 | else | |
2691 | scm_gen_puts (scm_regular_string, "#<syntax", port); | |
2692 | if (SCM_CAR (exp) & (2L << 16)) | |
2693 | scm_gen_putc ('!', port); | |
2694 | scm_gen_putc (' ', port); | |
19402679 MD |
2695 | SCM_SET_WRITINGP (pstate, 1); |
2696 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2697 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2698 | scm_gen_putc ('>', port); |
2699 | return !0; | |
2700 | } | |
2701 | ||
2702 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); | |
1cc91f1b | 2703 | |
0f2d19dd JB |
2704 | SCM |
2705 | scm_force (x) | |
2706 | SCM x; | |
0f2d19dd JB |
2707 | { |
2708 | SCM_ASSERT ((SCM_TYP16 (x) == scm_tc16_promise), x, SCM_ARG1, s_force); | |
2709 | if (!((1L << 16) & SCM_CAR (x))) | |
2710 | { | |
2711 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
2712 | if (!((1L << 16) & SCM_CAR (x))) | |
2713 | { | |
2714 | SCM_DEFER_INTS; | |
a23afe53 MD |
2715 | SCM_SETCDR (x, ans); |
2716 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
2717 | SCM_ALLOW_INTS; |
2718 | } | |
2719 | } | |
2720 | return SCM_CDR (x); | |
2721 | } | |
2722 | ||
2723 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
1cc91f1b | 2724 | |
0f2d19dd JB |
2725 | SCM |
2726 | scm_promise_p (x) | |
2727 | SCM x; | |
0f2d19dd JB |
2728 | { |
2729 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
2730 | ? SCM_BOOL_T | |
2731 | : SCM_BOOL_F); | |
2732 | } | |
2733 | ||
2734 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
1cc91f1b | 2735 | |
0f2d19dd JB |
2736 | SCM |
2737 | scm_copy_tree (obj) | |
2738 | SCM obj; | |
0f2d19dd JB |
2739 | { |
2740 | SCM ans, tl; | |
2741 | if SCM_IMP | |
2742 | (obj) return obj; | |
2743 | if (SCM_VECTORP (obj)) | |
2744 | { | |
2745 | scm_sizet i = SCM_LENGTH (obj); | |
2746 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED, SCM_UNDEFINED); | |
2747 | while (i--) | |
2748 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
2749 | return ans; | |
2750 | } | |
2751 | if SCM_NCONSP (obj) | |
2752 | return obj; | |
2753 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
2754 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
2755 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) | |
a23afe53 MD |
2756 | { |
2757 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
2758 | SCM_UNSPECIFIED)); | |
2759 | tl = SCM_CDR (tl); | |
2760 | } | |
2761 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
2762 | return ans; |
2763 | } | |
2764 | ||
1cc91f1b | 2765 | |
0f2d19dd JB |
2766 | SCM |
2767 | scm_eval_3 (obj, copyp, env) | |
2768 | SCM obj; | |
2769 | int copyp; | |
2770 | SCM env; | |
0f2d19dd JB |
2771 | { |
2772 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
2773 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
2774 | else if (copyp) | |
2775 | obj = scm_copy_tree (obj); | |
6dbd0af5 | 2776 | return XEVAL (obj, env); |
0f2d19dd JB |
2777 | } |
2778 | ||
1cc91f1b | 2779 | |
0f2d19dd JB |
2780 | SCM |
2781 | scm_top_level_env (thunk) | |
2782 | SCM thunk; | |
0f2d19dd JB |
2783 | { |
2784 | if (SCM_IMP(thunk)) | |
2785 | return SCM_EOL; | |
2786 | else | |
2787 | return scm_cons(thunk, (SCM)SCM_EOL); | |
2788 | } | |
2789 | ||
2790 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); | |
1cc91f1b | 2791 | |
0f2d19dd JB |
2792 | SCM |
2793 | scm_eval2 (obj, env_thunk) | |
2794 | SCM obj; | |
2795 | SCM env_thunk; | |
0f2d19dd JB |
2796 | { |
2797 | return scm_eval_3 (obj, 1, scm_top_level_env(env_thunk)); | |
2798 | } | |
2799 | ||
2800 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
1cc91f1b | 2801 | |
0f2d19dd JB |
2802 | SCM |
2803 | scm_eval (obj) | |
2804 | SCM obj; | |
0f2d19dd JB |
2805 | { |
2806 | return | |
dc19d1d2 | 2807 | scm_eval_3(obj, 1, scm_top_level_env(SCM_CDR(scm_top_level_lookup_closure_var))); |
0f2d19dd JB |
2808 | } |
2809 | ||
11f77bfc | 2810 | /* SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); */ |
1cc91f1b | 2811 | |
0f2d19dd JB |
2812 | SCM |
2813 | scm_eval_x (obj) | |
2814 | SCM obj; | |
0f2d19dd JB |
2815 | { |
2816 | return | |
2817 | scm_eval_3(obj, | |
2818 | 0, | |
dc19d1d2 | 2819 | scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var))); |
0f2d19dd JB |
2820 | } |
2821 | ||
2822 | SCM_PROC (s_macro_eval_x, "macro-eval!", 2, 0, 0, scm_macro_eval_x); | |
1cc91f1b | 2823 | |
0f2d19dd JB |
2824 | SCM |
2825 | scm_macro_eval_x (exp, env) | |
2826 | SCM exp; | |
2827 | SCM env; | |
0f2d19dd JB |
2828 | { |
2829 | return scm_eval_3 (exp, 0, env); | |
2830 | } | |
2831 | ||
1cc91f1b | 2832 | |
ee33f8fa MV |
2833 | SCM_PROC (s_definedp, "defined?", 1, 0, 0, scm_definedp); |
2834 | ||
0f2d19dd | 2835 | SCM |
ee33f8fa MV |
2836 | scm_definedp (sym) |
2837 | SCM sym; | |
0f2d19dd | 2838 | { |
ee33f8fa MV |
2839 | SCM vcell; |
2840 | ||
2841 | if (SCM_ISYMP (sym)) | |
0f2d19dd | 2842 | return SCM_BOOL_T; |
ee33f8fa MV |
2843 | |
2844 | SCM_ASSERT (SCM_NIMP (sym) && SCM_SYMBOLP (sym), sym, SCM_ARG1, s_definedp); | |
2845 | ||
2846 | vcell = scm_sym2vcell(sym, | |
0aa1e432 | 2847 | SCM_CDR (scm_top_level_lookup_closure_var), |
ee33f8fa MV |
2848 | SCM_BOOL_F); |
2849 | return (vcell == SCM_BOOL_F || SCM_UNBNDP(SCM_CDR(vcell))) ? | |
2850 | SCM_BOOL_F : SCM_BOOL_T; | |
0f2d19dd JB |
2851 | } |
2852 | ||
2853 | static scm_smobfuns promsmob = | |
2854 | {scm_markcdr, scm_free0, prinprom}; | |
2855 | ||
2856 | static scm_smobfuns macrosmob = | |
2857 | {scm_markcdr, scm_free0, prinmacro}; | |
2858 | ||
1cc91f1b | 2859 | |
0f2d19dd JB |
2860 | SCM |
2861 | scm_make_synt (name, macroizer, fcn) | |
2862 | char *name; | |
2863 | SCM (*macroizer) (); | |
2864 | SCM (*fcn) (); | |
0f2d19dd JB |
2865 | { |
2866 | SCM symcell = scm_sysintern (name, SCM_UNDEFINED); | |
2867 | long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); | |
2868 | register SCM z; | |
2869 | if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) | |
2870 | tmp = 0; | |
2871 | SCM_NEWCELL (z); | |
2872 | SCM_SUBRF (z) = fcn; | |
a23afe53 MD |
2873 | SCM_SETCAR (z, tmp + scm_tc7_subr_2); |
2874 | SCM_SETCDR (symcell, macroizer (z)); | |
0f2d19dd JB |
2875 | return SCM_CAR (symcell); |
2876 | } | |
2877 | ||
6dbd0af5 MD |
2878 | |
2879 | /* At this point, scm_deval and scm_dapply are generated. | |
2880 | */ | |
2881 | ||
0f2d19dd | 2882 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
2883 | # define DEVAL |
2884 | # include "eval.c" | |
0f2d19dd JB |
2885 | #endif |
2886 | ||
2887 | ||
1cc91f1b | 2888 | |
0f2d19dd JB |
2889 | void |
2890 | scm_init_eval () | |
0f2d19dd | 2891 | { |
0f2d19dd JB |
2892 | scm_tc16_promise = scm_newsmob (&promsmob); |
2893 | scm_tc16_macro = scm_newsmob (¯osmob); | |
2894 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); | |
2895 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
2896 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
2897 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
2898 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
2899 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
2900 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
2901 | ||
2902 | /* acros */ | |
2903 | scm_i_quasiquote = scm_make_synt (s_quasiquote, scm_makacro, scm_m_quasiquote); | |
6dbd0af5 | 2904 | scm_make_synt (s_undefine, scm_makacro, scm_m_undefine); |
0f2d19dd JB |
2905 | scm_make_synt (s_delay, scm_makacro, scm_m_delay); |
2906 | /* end of acros */ | |
2907 | ||
dc19d1d2 JB |
2908 | scm_top_level_lookup_closure_var = |
2909 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 2910 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 2911 | |
6dbd0af5 MD |
2912 | scm_i_and = scm_make_synt ("and", scm_makmmacro, scm_m_and); |
2913 | scm_i_begin = scm_make_synt ("begin", scm_makmmacro, scm_m_begin); | |
2914 | scm_i_case = scm_make_synt ("case", scm_makmmacro, scm_m_case); | |
2915 | scm_i_cond = scm_make_synt ("cond", scm_makmmacro, scm_m_cond); | |
2916 | scm_i_define = scm_make_synt ("define", scm_makmmacro, scm_m_define); | |
2917 | scm_i_do = scm_make_synt ("do", scm_makmmacro, scm_m_do); | |
2918 | scm_i_if = scm_make_synt ("if", scm_makmmacro, scm_m_if); | |
0f2d19dd JB |
2919 | scm_i_lambda = scm_make_synt ("lambda", scm_makmmacro, scm_m_lambda); |
2920 | scm_i_let = scm_make_synt ("let", scm_makmmacro, scm_m_let); | |
6dbd0af5 MD |
2921 | scm_i_letrec = scm_make_synt ("letrec", scm_makmmacro, scm_m_letrec); |
2922 | scm_i_letstar = scm_make_synt ("let*", scm_makmmacro, scm_m_letstar); | |
2923 | scm_i_or = scm_make_synt ("or", scm_makmmacro, scm_m_or); | |
0f2d19dd | 2924 | scm_i_quote = scm_make_synt ("quote", scm_makmmacro, scm_m_quote); |
6dbd0af5 MD |
2925 | scm_i_set = scm_make_synt ("set!", scm_makmmacro, scm_m_set); |
2926 | scm_i_atapply = scm_make_synt ("@apply", scm_makmmacro, scm_m_apply); | |
2927 | scm_i_atcall_cc = scm_make_synt ("@call-with-current-continuation", | |
2928 | scm_makmmacro, scm_m_cont); | |
2929 | ||
6dbd0af5 MD |
2930 | #ifdef DEBUG_EXTENSIONS |
2931 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
2932 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
2933 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
2934 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
2935 | #endif | |
2936 | ||
0f2d19dd JB |
2937 | #include "eval.x" |
2938 | } | |
0f2d19dd | 2939 | |
6dbd0af5 | 2940 | #endif /* !DEVAL */ |