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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 | ||
48b96f4b JB |
57 | /* AIX requires this to be the first thing in the file. The #pragma |
58 | directive is indented so pre-ANSI compilers will ignore it, rather | |
59 | than choke on it. */ | |
60 | #ifdef __GNUC__ | |
61 | # define alloca __builtin_alloca | |
62 | #else | |
63 | # if HAVE_ALLOCA_H | |
64 | # include <alloca.h> | |
65 | # else | |
66 | # ifdef _AIX | |
67 | #pragma alloca | |
68 | # else | |
69 | # ifndef alloca /* predefined by HP cc +Olibcalls */ | |
70 | char *alloca (); | |
71 | # endif | |
72 | # endif | |
73 | # endif | |
74 | #endif | |
75 | ||
0f2d19dd JB |
76 | #include <stdio.h> |
77 | #include "_scm.h" | |
20e6290e JB |
78 | #include "debug.h" |
79 | #include "append.h" | |
80 | #include "alist.h" | |
81 | #include "sequences.h" | |
82 | #include "eq.h" | |
83 | #include "continuations.h" | |
84 | #include "throw.h" | |
85 | #include "smob.h" | |
86 | #include "markers.h" | |
87 | #include "procprop.h" | |
88 | #include "hashtab.h" | |
ac46ab16 | 89 | #include "hash.h" |
0f2d19dd | 90 | |
20e6290e JB |
91 | #ifdef DEBUG_EXTENSIONS |
92 | #include "debug.h" | |
93 | #endif /* DEBUG_EXTENSIONS */ | |
94 | ||
95 | #include "srcprop.h" | |
96 | #include "stackchk.h" | |
97 | ||
98 | #include "eval.h" | |
0f2d19dd JB |
99 | \f |
100 | ||
6dbd0af5 MD |
101 | /* The evaluator contains a plethora of EVAL symbols. |
102 | * This is an attempt at explanation. | |
103 | * | |
104 | * The following macros should be used in code which is read twice | |
105 | * (where the choice of evaluator is hard soldered): | |
106 | * | |
107 | * SCM_CEVAL is the symbol used within one evaluator to call itself. | |
108 | * Originally, it is defined to scm_ceval, but is redefined to | |
109 | * scm_deval during the second pass. | |
110 | * | |
111 | * SIDEVAL corresponds to SCM_CEVAL, but is used in situations where | |
112 | * only side effects of expressions matter. All immediates are | |
113 | * ignored. | |
114 | * | |
115 | * EVALIM is used when it is known that the expression is an | |
116 | * immediate. (This macro never calls an evaluator.) | |
117 | * | |
118 | * EVALCAR evaluates the car of an expression. | |
119 | * | |
120 | * EVALCELLCAR is like EVALCAR, but is used when it is known that the | |
121 | * car is a lisp cell. | |
122 | * | |
123 | * The following macros should be used in code which is read once | |
124 | * (where the choice of evaluator is dynamic): | |
125 | * | |
126 | * XEVAL takes care of immediates without calling an evaluator. It | |
127 | * then calls scm_ceval *or* scm_deval, depending on the debugging | |
128 | * mode. | |
129 | * | |
130 | * XEVALCAR corresponds to EVALCAR, but uses scm_ceval *or* scm_deval | |
131 | * depending on the debugging mode. | |
132 | * | |
133 | * The main motivation for keeping this plethora is efficiency | |
134 | * together with maintainability (=> locality of code). | |
135 | */ | |
136 | ||
0f2d19dd JB |
137 | #define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR(x)) \ |
138 | ? *scm_lookupcar(x, env) \ | |
139 | : SCM_CEVAL(SCM_CAR(x), env)) | |
140 | ||
141 | #ifdef MEMOIZE_LOCALS | |
6dbd0af5 | 142 | #define EVALIM(x, env) (SCM_ILOCP(x)?*scm_ilookup((x), env):x) |
0f2d19dd | 143 | #else |
6dbd0af5 | 144 | #define EVALIM(x, env) x |
0f2d19dd JB |
145 | #endif |
146 | #define EVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x))\ | |
147 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 148 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
149 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
150 | : EVALCELLCAR(x, env)) | |
151 | #ifdef DEBUG_EXTENSIONS | |
152 | #define XEVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x)) \ | |
153 | ? (SCM_IMP(SCM_CAR(x)) \ | |
6dbd0af5 | 154 | ? EVALIM(SCM_CAR(x), env) \ |
0f2d19dd JB |
155 | : SCM_GLOC_VAL(SCM_CAR(x))) \ |
156 | : (SCM_SYMBOLP(SCM_CAR(x)) \ | |
157 | ? *scm_lookupcar(x, env) \ | |
158 | : (*scm_ceval_ptr) (SCM_CAR(x), env))) | |
159 | #else | |
160 | #define XEVALCAR(x, env) EVALCAR(x, env) | |
161 | #endif | |
162 | ||
e2806c10 | 163 | #define EXTEND_ENV SCM_EXTEND_ENV |
0f2d19dd JB |
164 | |
165 | #ifdef MEMOIZE_LOCALS | |
1cc91f1b | 166 | |
0f2d19dd JB |
167 | SCM * |
168 | scm_ilookup (iloc, env) | |
169 | SCM iloc; | |
170 | SCM env; | |
0f2d19dd JB |
171 | { |
172 | register int ir = SCM_IFRAME (iloc); | |
173 | register SCM er = env; | |
174 | for (; 0 != ir; --ir) | |
175 | er = SCM_CDR (er); | |
176 | er = SCM_CAR (er); | |
177 | for (ir = SCM_IDIST (iloc); 0 != ir; --ir) | |
178 | er = SCM_CDR (er); | |
179 | if (SCM_ICDRP (iloc)) | |
a23afe53 MD |
180 | return SCM_CDRLOC (er); |
181 | return SCM_CARLOC (SCM_CDR (er)); | |
0f2d19dd JB |
182 | } |
183 | #endif | |
184 | ||
1cc91f1b | 185 | |
0f2d19dd JB |
186 | SCM * |
187 | scm_lookupcar (vloc, genv) | |
188 | SCM vloc; | |
189 | SCM genv; | |
0f2d19dd JB |
190 | { |
191 | SCM env = genv; | |
192 | register SCM *al, fl, var = SCM_CAR (vloc); | |
193 | #ifdef MEMOIZE_LOCALS | |
194 | register SCM iloc = SCM_ILOC00; | |
195 | #endif | |
196 | for (; SCM_NIMP (env); env = SCM_CDR (env)) | |
197 | { | |
198 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env))) | |
199 | break; | |
a23afe53 | 200 | al = SCM_CARLOC (env); |
0f2d19dd JB |
201 | for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl)) |
202 | { | |
203 | if (SCM_NCONSP (fl)) | |
204 | if (fl == var) | |
205 | { | |
206 | #ifdef MEMOIZE_LOCALS | |
a23afe53 | 207 | SCM_SETCAR (vloc, iloc + SCM_ICDR); |
0f2d19dd | 208 | #endif |
a23afe53 | 209 | return SCM_CDRLOC (*al); |
0f2d19dd JB |
210 | } |
211 | else | |
212 | break; | |
a23afe53 | 213 | al = SCM_CDRLOC (*al); |
0f2d19dd JB |
214 | if (SCM_CAR (fl) == var) |
215 | { | |
216 | #ifdef MEMOIZE_LOCALS | |
217 | #ifndef RECKLESS /* letrec inits to SCM_UNDEFINED */ | |
218 | if (SCM_UNBNDP (SCM_CAR (*al))) | |
219 | { | |
220 | env = SCM_EOL; | |
221 | goto errout; | |
222 | } | |
223 | #endif | |
a23afe53 | 224 | SCM_SETCAR (vloc, iloc); |
0f2d19dd | 225 | #endif |
a23afe53 | 226 | return SCM_CARLOC (*al); |
0f2d19dd JB |
227 | } |
228 | #ifdef MEMOIZE_LOCALS | |
229 | iloc += SCM_IDINC; | |
230 | #endif | |
231 | } | |
232 | #ifdef MEMOIZE_LOCALS | |
233 | iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC); | |
234 | #endif | |
235 | } | |
236 | { | |
237 | SCM top_thunk, vcell; | |
238 | if (SCM_NIMP(env)) | |
239 | { | |
240 | top_thunk = SCM_CAR(env); /* env now refers to a top level env thunk */ | |
241 | env = SCM_CDR (env); | |
242 | } | |
243 | else | |
244 | top_thunk = SCM_BOOL_F; | |
245 | vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F); | |
246 | if (vcell == SCM_BOOL_F) | |
247 | goto errout; | |
248 | else | |
249 | var = vcell; | |
250 | } | |
251 | #ifndef RECKLESS | |
252 | if (SCM_NNULLP (env) || SCM_UNBNDP (SCM_CDR (var))) | |
253 | { | |
254 | var = SCM_CAR (var); | |
255 | errout: | |
f5bf2977 | 256 | /* scm_everr (vloc, genv,...) */ |
523f5266 GH |
257 | scm_misc_error (NULL, |
258 | SCM_NULLP (env) | |
259 | ? "Unbound variable: %S" | |
260 | : "Damaged environment: %S", | |
261 | scm_listify (var, SCM_UNDEFINED)); | |
0f2d19dd JB |
262 | } |
263 | #endif | |
a23afe53 | 264 | SCM_SETCAR (vloc, var + 1); |
0f2d19dd JB |
265 | /* Except wait...what if the var is not a vcell, |
266 | * but syntax or something.... | |
267 | */ | |
a23afe53 | 268 | return SCM_CDRLOC (var); |
0f2d19dd JB |
269 | } |
270 | ||
271 | #define unmemocar scm_unmemocar | |
1cc91f1b | 272 | |
0f2d19dd JB |
273 | SCM |
274 | scm_unmemocar (form, env) | |
275 | SCM form; | |
276 | SCM env; | |
0f2d19dd | 277 | { |
6dbd0af5 | 278 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd | 279 | register int ir; |
6dbd0af5 | 280 | #endif |
0f2d19dd JB |
281 | SCM c; |
282 | ||
283 | if (SCM_IMP (form)) | |
284 | return form; | |
285 | c = SCM_CAR (form); | |
286 | if (1 == (c & 7)) | |
a23afe53 | 287 | SCM_SETCAR (form, SCM_CAR (c - 1)); |
0f2d19dd | 288 | #ifdef MEMOIZE_LOCALS |
6dbd0af5 | 289 | #ifdef DEBUG_EXTENSIONS |
0f2d19dd JB |
290 | else if (SCM_ILOCP (c)) |
291 | { | |
292 | for (ir = SCM_IFRAME (c); ir != 0; --ir) | |
293 | env = SCM_CDR (env); | |
294 | env = SCM_CAR (SCM_CAR (env)); | |
295 | for (ir = SCM_IDIST (c); ir != 0; --ir) | |
296 | env = SCM_CDR (env); | |
a23afe53 | 297 | SCM_SETCAR (form, SCM_ICDRP (c) ? env : SCM_CAR (env)); |
0f2d19dd | 298 | } |
6dbd0af5 | 299 | #endif |
0f2d19dd JB |
300 | #endif |
301 | return form; | |
302 | } | |
303 | ||
1cc91f1b | 304 | |
0f2d19dd JB |
305 | SCM |
306 | scm_eval_car (pair, env) | |
307 | SCM pair; | |
308 | SCM env; | |
0f2d19dd | 309 | { |
6dbd0af5 | 310 | return XEVALCAR (pair, env); |
0f2d19dd JB |
311 | } |
312 | ||
313 | \f | |
314 | /* | |
315 | * The following rewrite expressions and | |
316 | * some memoized forms have different syntax | |
317 | */ | |
318 | ||
319 | static char s_expression[] = "missing or extra expression"; | |
320 | static char s_test[] = "bad test"; | |
321 | static char s_body[] = "bad body"; | |
322 | static char s_bindings[] = "bad bindings"; | |
323 | static char s_variable[] = "bad variable"; | |
324 | static char s_clauses[] = "bad or missing clauses"; | |
325 | static char s_formals[] = "bad formals"; | |
326 | #define ASSYNT(_cond, _arg, _pos, _subr) if(!(_cond))scm_wta(_arg, (char *)_pos, _subr); | |
327 | ||
328 | SCM scm_i_dot, scm_i_quote, scm_i_quasiquote, scm_i_lambda, scm_i_let, | |
329 | scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply; | |
6dbd0af5 MD |
330 | SCM scm_i_define, scm_i_and, scm_i_begin, scm_i_case, scm_i_cond, |
331 | scm_i_do, scm_i_if, scm_i_let, scm_i_letrec, scm_i_letstar, | |
332 | scm_i_or, scm_i_set, scm_i_atapply, scm_i_atcall_cc; | |
0f2d19dd JB |
333 | static char s_quasiquote[] = "quasiquote"; |
334 | static char s_delay[] = "delay"; | |
6dbd0af5 MD |
335 | static char s_undefine[] = "undefine"; |
336 | #ifdef DEBUG_EXTENSIONS | |
337 | SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame; | |
338 | SCM scm_i_trace; | |
339 | #endif | |
0f2d19dd JB |
340 | |
341 | #define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what); | |
342 | ||
343 | ||
1cc91f1b JB |
344 | |
345 | static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, char *what)); | |
346 | ||
0f2d19dd JB |
347 | static void |
348 | bodycheck (xorig, bodyloc, what) | |
349 | SCM xorig; | |
350 | SCM *bodyloc; | |
351 | char *what; | |
0f2d19dd JB |
352 | { |
353 | ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, s_expression); | |
354 | } | |
355 | ||
356 | ||
1cc91f1b | 357 | |
0f2d19dd JB |
358 | SCM |
359 | scm_m_quote (xorig, env) | |
360 | SCM xorig; | |
361 | SCM env; | |
0f2d19dd JB |
362 | { |
363 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "quote"); | |
364 | return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig)); | |
365 | } | |
366 | ||
367 | ||
1cc91f1b | 368 | |
0f2d19dd JB |
369 | SCM |
370 | scm_m_begin (xorig, env) | |
371 | SCM xorig; | |
372 | SCM env; | |
0f2d19dd JB |
373 | { |
374 | ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1, xorig, s_expression, "begin"); | |
375 | return scm_cons (SCM_IM_BEGIN, SCM_CDR (xorig)); | |
376 | } | |
377 | ||
378 | ||
1cc91f1b | 379 | |
0f2d19dd JB |
380 | SCM |
381 | scm_m_if (xorig, env) | |
382 | SCM xorig; | |
383 | SCM env; | |
0f2d19dd JB |
384 | { |
385 | int len = scm_ilength (SCM_CDR (xorig)); | |
386 | ASSYNT (len >= 2 && len <= 3, xorig, s_expression, "if"); | |
387 | return scm_cons (SCM_IM_IF, SCM_CDR (xorig)); | |
388 | } | |
389 | ||
390 | ||
1cc91f1b | 391 | |
0f2d19dd JB |
392 | SCM |
393 | scm_m_set (xorig, env) | |
394 | SCM xorig; | |
395 | SCM env; | |
0f2d19dd | 396 | { |
6dbd0af5 MD |
397 | SCM x = SCM_CDR (xorig); |
398 | ASSYNT (2 == scm_ilength (x), xorig, s_expression, "set!"); | |
399 | ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)), | |
400 | xorig, s_variable, "set!"); | |
0f2d19dd JB |
401 | return scm_cons (SCM_IM_SET, x); |
402 | } | |
403 | ||
404 | ||
405 | #if 0 | |
1cc91f1b | 406 | |
0f2d19dd JB |
407 | SCM |
408 | scm_m_vref (xorig, env) | |
409 | SCM xorig; | |
410 | SCM env; | |
0f2d19dd JB |
411 | { |
412 | SCM x = SCM_CDR (xorig); | |
413 | ASSYNT (1 == scm_ilength (x), xorig, s_expression, s_vref); | |
414 | if (SCM_NIMP(x) && UDSCM_VARIABLEP (SCM_CAR (x))) | |
415 | { | |
f5bf2977 | 416 | /* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */ |
523f5266 GH |
417 | scm_misc_error (NULL, |
418 | "Bad variable: %S", | |
419 | scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED)); | |
0f2d19dd JB |
420 | } |
421 | ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)), | |
422 | xorig, s_variable, s_vref); | |
423 | return | |
424 | return scm_cons (IM_VREF, x); | |
425 | } | |
426 | ||
427 | ||
1cc91f1b | 428 | |
0f2d19dd JB |
429 | SCM |
430 | scm_m_vset (xorig, env) | |
431 | SCM xorig; | |
432 | SCM env; | |
0f2d19dd JB |
433 | { |
434 | SCM x = SCM_CDR (xorig); | |
435 | ASSYNT (3 == scm_ilength (x), xorig, s_expression, s_vset); | |
436 | ASSYNT (( DEFSCM_VARIABLEP (SCM_CAR (x)) | |
437 | || UDSCM_VARIABLEP (SCM_CAR (x))), | |
438 | xorig, s_variable, s_vset); | |
439 | return scm_cons (IM_VSET, x); | |
440 | } | |
441 | #endif | |
442 | ||
443 | ||
1cc91f1b | 444 | |
0f2d19dd JB |
445 | SCM |
446 | scm_m_and (xorig, env) | |
447 | SCM xorig; | |
448 | SCM env; | |
0f2d19dd JB |
449 | { |
450 | int len = scm_ilength (SCM_CDR (xorig)); | |
451 | ASSYNT (len >= 0, xorig, s_test, "and"); | |
452 | if (len >= 1) | |
453 | return scm_cons (SCM_IM_AND, SCM_CDR (xorig)); | |
454 | else | |
455 | return SCM_BOOL_T; | |
456 | } | |
457 | ||
458 | ||
1cc91f1b | 459 | |
0f2d19dd JB |
460 | SCM |
461 | scm_m_or (xorig, env) | |
462 | SCM xorig; | |
463 | SCM env; | |
0f2d19dd JB |
464 | { |
465 | int len = scm_ilength (SCM_CDR (xorig)); | |
466 | ASSYNT (len >= 0, xorig, s_test, "or"); | |
467 | if (len >= 1) | |
468 | return scm_cons (SCM_IM_OR, SCM_CDR (xorig)); | |
469 | else | |
470 | return SCM_BOOL_F; | |
471 | } | |
472 | ||
473 | ||
1cc91f1b | 474 | |
0f2d19dd JB |
475 | SCM |
476 | scm_m_case (xorig, env) | |
477 | SCM xorig; | |
478 | SCM env; | |
0f2d19dd JB |
479 | { |
480 | SCM proc, x = SCM_CDR (xorig); | |
481 | ASSYNT (scm_ilength (x) >= 2, xorig, s_clauses, "case"); | |
482 | while (SCM_NIMP (x = SCM_CDR (x))) | |
483 | { | |
484 | proc = SCM_CAR (x); | |
485 | ASSYNT (scm_ilength (proc) >= 2, xorig, s_clauses, "case"); | |
486 | ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0 || scm_i_else == SCM_CAR (proc), | |
487 | xorig, s_clauses, "case"); | |
488 | } | |
489 | return scm_cons (SCM_IM_CASE, SCM_CDR (xorig)); | |
490 | } | |
491 | ||
492 | ||
1cc91f1b | 493 | |
0f2d19dd JB |
494 | SCM |
495 | scm_m_cond (xorig, env) | |
496 | SCM xorig; | |
497 | SCM env; | |
0f2d19dd JB |
498 | { |
499 | SCM arg1, x = SCM_CDR (xorig); | |
500 | int len = scm_ilength (x); | |
501 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
502 | while (SCM_NIMP (x)) | |
503 | { | |
504 | arg1 = SCM_CAR (x); | |
505 | len = scm_ilength (arg1); | |
506 | ASSYNT (len >= 1, xorig, s_clauses, "cond"); | |
507 | if (scm_i_else == SCM_CAR (arg1)) | |
508 | { | |
509 | ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2, xorig, "bad ELSE clause", "cond"); | |
a23afe53 | 510 | SCM_SETCAR (arg1, SCM_BOOL_T); |
0f2d19dd JB |
511 | } |
512 | if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1))) | |
513 | ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))), | |
514 | xorig, "bad recipient", "cond"); | |
515 | x = SCM_CDR (x); | |
516 | } | |
517 | return scm_cons (SCM_IM_COND, SCM_CDR (xorig)); | |
518 | } | |
519 | ||
520 | ||
1cc91f1b | 521 | |
0f2d19dd JB |
522 | SCM |
523 | scm_m_lambda (xorig, env) | |
524 | SCM xorig; | |
525 | SCM env; | |
0f2d19dd JB |
526 | { |
527 | SCM proc, x = SCM_CDR (xorig); | |
528 | if (scm_ilength (x) < 2) | |
529 | goto badforms; | |
530 | proc = SCM_CAR (x); | |
531 | if SCM_NULLP | |
532 | (proc) goto memlambda; | |
533 | if SCM_IMP | |
534 | (proc) goto badforms; | |
535 | if SCM_SYMBOLP | |
536 | (proc) goto memlambda; | |
537 | if SCM_NCONSP | |
538 | (proc) goto badforms; | |
539 | while SCM_NIMP | |
540 | (proc) | |
541 | { | |
542 | if SCM_NCONSP | |
543 | (proc) | |
544 | if (!SCM_SYMBOLP (proc)) | |
545 | goto badforms; | |
546 | else | |
547 | goto memlambda; | |
548 | if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc)))) | |
549 | goto badforms; | |
550 | proc = SCM_CDR (proc); | |
551 | } | |
552 | if SCM_NNULLP | |
553 | (proc) | |
554 | badforms:scm_wta (xorig, s_formals, "lambda"); | |
555 | memlambda: | |
a23afe53 | 556 | bodycheck (xorig, SCM_CDRLOC (x), "lambda"); |
0f2d19dd JB |
557 | return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig)); |
558 | } | |
559 | ||
560 | ||
1cc91f1b | 561 | |
0f2d19dd JB |
562 | SCM |
563 | scm_m_letstar (xorig, env) | |
564 | SCM xorig; | |
565 | SCM env; | |
0f2d19dd JB |
566 | { |
567 | SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars; | |
568 | int len = scm_ilength (x); | |
569 | ASSYNT (len >= 2, xorig, s_body, "let*"); | |
570 | proc = SCM_CAR (x); | |
571 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let*"); | |
6dbd0af5 | 572 | while SCM_NIMP (proc) |
0f2d19dd JB |
573 | { |
574 | arg1 = SCM_CAR (proc); | |
575 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let*"); | |
576 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let*"); | |
577 | *varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 578 | varloc = SCM_CDRLOC (SCM_CDR (*varloc)); |
0f2d19dd JB |
579 | proc = SCM_CDR (proc); |
580 | } | |
581 | x = scm_cons (vars, SCM_CDR (x)); | |
a23afe53 | 582 | bodycheck (xorig, SCM_CDRLOC (x), "let*"); |
0f2d19dd JB |
583 | return scm_cons (SCM_IM_LETSTAR, x); |
584 | } | |
585 | ||
586 | /* DO gets the most radically altered syntax | |
587 | (do ((<var1> <init1> <step1>) | |
588 | (<var2> <init2>) | |
589 | ... ) | |
590 | (<test> <return>) | |
591 | <body>) | |
592 | ;; becomes | |
593 | (do_mem (varn ... var2 var1) | |
594 | (<init1> <init2> ... <initn>) | |
595 | (<test> <return>) | |
596 | (<body>) | |
597 | <step1> <step2> ... <stepn>) ;; missing steps replaced by var | |
598 | */ | |
599 | ||
600 | ||
1cc91f1b | 601 | |
0f2d19dd JB |
602 | SCM |
603 | scm_m_do (xorig, env) | |
604 | SCM xorig; | |
605 | SCM env; | |
0f2d19dd JB |
606 | { |
607 | SCM x = SCM_CDR (xorig), arg1, proc; | |
608 | SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL; | |
609 | SCM *initloc = &inits, *steploc = &steps; | |
610 | int len = scm_ilength (x); | |
611 | ASSYNT (len >= 2, xorig, s_test, "do"); | |
612 | proc = SCM_CAR (x); | |
613 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "do"); | |
614 | while SCM_NIMP | |
615 | (proc) | |
616 | { | |
617 | arg1 = SCM_CAR (proc); | |
618 | len = scm_ilength (arg1); | |
619 | ASSYNT (2 == len || 3 == len, xorig, s_bindings, "do"); | |
620 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "do"); | |
621 | /* vars reversed here, inits and steps reversed at evaluation */ | |
622 | vars = scm_cons (SCM_CAR (arg1), vars); /* variable */ | |
623 | arg1 = SCM_CDR (arg1); | |
624 | *initloc = scm_cons (SCM_CAR (arg1), SCM_EOL); /* init */ | |
a23afe53 | 625 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
626 | arg1 = SCM_CDR (arg1); |
627 | *steploc = scm_cons (SCM_IMP (arg1) ? SCM_CAR (vars) : SCM_CAR (arg1), SCM_EOL); /* step */ | |
a23afe53 | 628 | steploc = SCM_CDRLOC (*steploc); |
0f2d19dd JB |
629 | proc = SCM_CDR (proc); |
630 | } | |
631 | x = SCM_CDR (x); | |
632 | ASSYNT (scm_ilength (SCM_CAR (x)) >= 1, xorig, s_test, "do"); | |
633 | x = scm_cons2 (SCM_CAR (x), SCM_CDR (x), steps); | |
634 | x = scm_cons2 (vars, inits, x); | |
a23afe53 | 635 | bodycheck (xorig, SCM_CARLOC (SCM_CDR (SCM_CDR (x))), "do"); |
0f2d19dd JB |
636 | return scm_cons (SCM_IM_DO, x); |
637 | } | |
638 | ||
6dbd0af5 MD |
639 | /* evalcar is small version of inline EVALCAR when we don't care about |
640 | * speed | |
641 | */ | |
642 | #define evalcar scm_eval_car | |
0f2d19dd | 643 | |
1cc91f1b JB |
644 | |
645 | static SCM iqq SCM_P ((SCM form, SCM env, int depth)); | |
646 | ||
0f2d19dd JB |
647 | static SCM |
648 | iqq (form, env, depth) | |
649 | SCM form; | |
650 | SCM env; | |
651 | int depth; | |
0f2d19dd JB |
652 | { |
653 | SCM tmp; | |
654 | int edepth = depth; | |
655 | if SCM_IMP | |
656 | (form) return form; | |
657 | if (SCM_VECTORP (form)) | |
658 | { | |
659 | long i = SCM_LENGTH (form); | |
660 | SCM *data = SCM_VELTS (form); | |
661 | tmp = SCM_EOL; | |
662 | for (; --i >= 0;) | |
663 | tmp = scm_cons (data[i], tmp); | |
664 | return scm_vector (iqq (tmp, env, depth)); | |
665 | } | |
666 | if SCM_NCONSP | |
667 | (form) return form; | |
668 | tmp = SCM_CAR (form); | |
669 | if (scm_i_quasiquote == tmp) | |
670 | { | |
671 | depth++; | |
672 | goto label; | |
673 | } | |
674 | if (scm_i_unquote == tmp) | |
675 | { | |
676 | --depth; | |
677 | label: | |
678 | form = SCM_CDR (form); | |
679 | /* !!! might need a check here to be sure that form isn't a struct. */ | |
680 | SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)), | |
681 | form, SCM_ARG1, s_quasiquote); | |
682 | if (0 == depth) | |
683 | return evalcar (form, env); | |
684 | return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL); | |
685 | } | |
686 | if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp))) | |
687 | { | |
688 | tmp = SCM_CDR (tmp); | |
689 | if (0 == --edepth) | |
690 | return scm_append (scm_cons2 (evalcar (tmp, env), iqq (SCM_CDR (form), env, depth), SCM_EOL)); | |
691 | } | |
692 | return scm_cons (iqq (SCM_CAR (form), env, edepth), iqq (SCM_CDR (form), env, depth)); | |
693 | } | |
694 | ||
695 | /* Here are acros which return values rather than code. */ | |
696 | ||
1cc91f1b | 697 | |
0f2d19dd JB |
698 | SCM |
699 | scm_m_quasiquote (xorig, env) | |
700 | SCM xorig; | |
701 | SCM env; | |
0f2d19dd JB |
702 | { |
703 | SCM x = SCM_CDR (xorig); | |
704 | ASSYNT (scm_ilength (x) == 1, xorig, s_expression, s_quasiquote); | |
705 | return iqq (SCM_CAR (x), env, 1); | |
706 | } | |
707 | ||
1cc91f1b | 708 | |
0f2d19dd JB |
709 | SCM |
710 | scm_m_delay (xorig, env) | |
711 | SCM xorig; | |
712 | SCM env; | |
0f2d19dd JB |
713 | { |
714 | ASSYNT (scm_ilength (xorig) == 2, xorig, s_expression, s_delay); | |
715 | xorig = SCM_CDR (xorig); | |
716 | return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)), | |
717 | env)); | |
718 | } | |
719 | ||
1cc91f1b JB |
720 | |
721 | static SCM env_top_level SCM_P ((SCM env)); | |
722 | ||
0f2d19dd JB |
723 | static SCM |
724 | env_top_level (env) | |
725 | SCM env; | |
0f2d19dd JB |
726 | { |
727 | while (SCM_NIMP(env)) | |
728 | { | |
729 | if (SCM_BOOL_T == scm_procedure_p (SCM_CAR(env))) | |
730 | return SCM_CAR(env); | |
731 | env = SCM_CDR (env); | |
732 | } | |
733 | return SCM_BOOL_F; | |
734 | } | |
735 | ||
1cc91f1b | 736 | |
0f2d19dd JB |
737 | SCM |
738 | scm_m_define (x, env) | |
739 | SCM x; | |
740 | SCM env; | |
0f2d19dd JB |
741 | { |
742 | SCM proc, arg1 = x; | |
743 | x = SCM_CDR (x); | |
744 | /* ASSYNT(SCM_NULLP(env), x, "bad placement", s_define);*/ | |
745 | ASSYNT (scm_ilength (x) >= 2, arg1, s_expression, "define"); | |
746 | proc = SCM_CAR (x); | |
747 | x = SCM_CDR (x); | |
748 | while (SCM_NIMP (proc) && SCM_CONSP (proc)) | |
749 | { /* nested define syntax */ | |
750 | x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL); | |
751 | proc = SCM_CAR (proc); | |
752 | } | |
753 | ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc), arg1, s_variable, "define"); | |
754 | ASSYNT (1 == scm_ilength (x), arg1, s_expression, "define"); | |
755 | if (SCM_TOP_LEVEL (env)) | |
756 | { | |
757 | x = evalcar (x, env); | |
6dbd0af5 | 758 | #ifdef DEBUG_EXTENSIONS |
38bd0b3b | 759 | if (SCM_REC_PROCNAMES_P) |
6dbd0af5 MD |
760 | scm_set_procedure_property_x (x, scm_i_name, proc); |
761 | #endif | |
0f2d19dd JB |
762 | arg1 = scm_sym2vcell (proc, env_top_level (env), SCM_BOOL_T); |
763 | #if 0 | |
764 | #ifndef RECKLESS | |
765 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc) | |
766 | && (SCM_CDR (arg1) != x)) | |
767 | scm_warn ("redefining built-in ", SCM_CHARS (proc)); | |
768 | else | |
769 | #endif | |
770 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
771 | scm_warn ("redefining ", SCM_CHARS (proc)); | |
0f2d19dd | 772 | #endif |
a23afe53 | 773 | SCM_SETCDR (arg1, x); |
0f2d19dd JB |
774 | #ifdef SICP |
775 | return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL); | |
776 | #else | |
777 | return SCM_UNSPECIFIED; | |
778 | #endif | |
779 | } | |
780 | return scm_cons2 (SCM_IM_DEFINE, proc, x); | |
781 | } | |
6dbd0af5 MD |
782 | |
783 | SCM | |
784 | scm_m_undefine (x, env) | |
785 | SCM x, env; | |
786 | { | |
787 | SCM arg1 = x; | |
788 | x = SCM_CDR (x); | |
789 | ASSYNT (SCM_TOP_LEVEL (env), arg1, "bad placement ", s_undefine); | |
790 | ASSYNT (SCM_NIMP (x) && SCM_CONSP (x) && SCM_CDR (x) == SCM_EOL, | |
791 | arg1, s_expression, s_undefine); | |
792 | x = SCM_CAR (x); | |
793 | ASSYNT (SCM_NIMP (x) && SCM_SYMBOLP (x), arg1, s_variable, s_undefine); | |
794 | arg1 = scm_sym2vcell (x, env_top_level (env), SCM_BOOL_F); | |
795 | ASSYNT (SCM_NFALSEP (arg1) && !SCM_UNBNDP (SCM_CDR (arg1)), | |
796 | x, "variable already unbound ", s_undefine); | |
797 | #if 0 | |
798 | #ifndef RECKLESS | |
799 | if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == x)) | |
800 | scm_warn ("undefining built-in ", SCM_CHARS (x)); | |
801 | else | |
802 | #endif | |
803 | if (5 <= scm_verbose && SCM_UNDEFINED != SCM_CDR (arg1)) | |
804 | scm_warn ("redefining ", SCM_CHARS (x)); | |
805 | #endif | |
a23afe53 | 806 | SCM_SETCDR (arg1, SCM_UNDEFINED); |
6dbd0af5 MD |
807 | #ifdef SICP |
808 | return SCM_CAR (arg1); | |
809 | #else | |
810 | return SCM_UNSPECIFIED; | |
811 | #endif | |
812 | } | |
813 | ||
0f2d19dd JB |
814 | /* end of acros */ |
815 | ||
1cc91f1b | 816 | |
0f2d19dd JB |
817 | SCM |
818 | scm_m_letrec (xorig, env) | |
819 | SCM xorig; | |
820 | SCM env; | |
0f2d19dd JB |
821 | { |
822 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
823 | char *what = SCM_CHARS (SCM_CAR (xorig)); | |
824 | SCM x = cdrx, proc, arg1; /* structure traversers */ | |
825 | SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits; | |
826 | ||
827 | ASRTSYNTAX (scm_ilength (x) >= 2, s_body); | |
828 | proc = SCM_CAR (x); | |
829 | if SCM_NULLP | |
830 | (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */ | |
831 | ASRTSYNTAX (scm_ilength (proc) >= 1, s_bindings); | |
832 | do | |
833 | { | |
834 | /* vars scm_list reversed here, inits reversed at evaluation */ | |
835 | arg1 = SCM_CAR (proc); | |
836 | ASRTSYNTAX (2 == scm_ilength (arg1), s_bindings); | |
837 | ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), s_variable); | |
838 | vars = scm_cons (SCM_CAR (arg1), vars); | |
839 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); | |
a23afe53 | 840 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
841 | } |
842 | while SCM_NIMP | |
843 | (proc = SCM_CDR (proc)); | |
844 | cdrx = scm_cons2 (vars, inits, SCM_CDR (x)); | |
a23afe53 | 845 | bodycheck (xorig, SCM_CDRLOC (SCM_CDR (cdrx)), what); |
0f2d19dd JB |
846 | return scm_cons (SCM_IM_LETREC, cdrx); |
847 | } | |
848 | ||
1cc91f1b | 849 | |
0f2d19dd JB |
850 | SCM |
851 | scm_m_let (xorig, env) | |
852 | SCM xorig; | |
853 | SCM env; | |
0f2d19dd JB |
854 | { |
855 | SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */ | |
856 | SCM x = cdrx, proc, arg1, name; /* structure traversers */ | |
857 | SCM vars = SCM_EOL, inits = SCM_EOL, *varloc = &vars, *initloc = &inits; | |
858 | ||
859 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
860 | proc = SCM_CAR (x); | |
861 | if (SCM_NULLP (proc) | |
862 | || (SCM_NIMP (proc) && SCM_CONSP (proc) | |
863 | && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc)))) | |
864 | return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */ | |
865 | ASSYNT (SCM_NIMP (proc), xorig, s_bindings, "let"); | |
866 | if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */ | |
867 | return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env))); | |
868 | if (!SCM_SYMBOLP (proc)) | |
869 | scm_wta (xorig, s_bindings, "let"); /* bad let */ | |
870 | name = proc; /* named let, build equiv letrec */ | |
871 | x = SCM_CDR (x); | |
872 | ASSYNT (scm_ilength (x) >= 2, xorig, s_body, "let"); | |
873 | proc = SCM_CAR (x); /* bindings scm_list */ | |
874 | ASSYNT (scm_ilength (proc) >= 0, xorig, s_bindings, "let"); | |
875 | while SCM_NIMP | |
876 | (proc) | |
877 | { /* vars and inits both in order */ | |
878 | arg1 = SCM_CAR (proc); | |
879 | ASSYNT (2 == scm_ilength (arg1), xorig, s_bindings, "let"); | |
880 | ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), xorig, s_variable, "let"); | |
881 | *varloc = scm_cons (SCM_CAR (arg1), SCM_EOL); | |
a23afe53 | 882 | varloc = SCM_CDRLOC (*varloc); |
0f2d19dd | 883 | *initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL); |
a23afe53 | 884 | initloc = SCM_CDRLOC (*initloc); |
0f2d19dd JB |
885 | proc = SCM_CDR (proc); |
886 | } | |
887 | return | |
888 | scm_m_letrec (scm_cons2 (scm_i_let, | |
889 | scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL), | |
890 | scm_acons (name, inits, SCM_EOL)), /* body */ | |
891 | env); | |
892 | } | |
893 | ||
894 | ||
1cc91f1b | 895 | |
0f2d19dd JB |
896 | SCM |
897 | scm_m_apply (xorig, env) | |
898 | SCM xorig; | |
899 | SCM env; | |
0f2d19dd JB |
900 | { |
901 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2, xorig, s_expression, "@apply"); | |
902 | return scm_cons (SCM_IM_APPLY, SCM_CDR (xorig)); | |
903 | } | |
904 | ||
e2806c10 | 905 | #define s_atcall_cc (SCM_ISYMCHARS(SCM_IM_CONT)+1) |
0f2d19dd | 906 | |
1cc91f1b | 907 | |
0f2d19dd JB |
908 | SCM |
909 | scm_m_cont (xorig, env) | |
910 | SCM xorig; | |
911 | SCM env; | |
0f2d19dd JB |
912 | { |
913 | ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1, xorig, s_expression, "@call-with-current-continuation"); | |
914 | return scm_cons (SCM_IM_CONT, SCM_CDR (xorig)); | |
915 | } | |
916 | ||
6dbd0af5 MD |
917 | /* scm_unmemocopy takes a memoized expression together with its |
918 | * environment and rewrites it to its original form. Thus, it is the | |
919 | * inversion of the rewrite rules above. The procedure is not | |
920 | * optimized for speed. It's used in scm_iprin1 when printing the | |
921 | * code of a closure, in scm_procedure_source and in scm_expr_stack | |
922 | * when generating the source for a stackframe. | |
923 | */ | |
924 | ||
1cc91f1b JB |
925 | |
926 | static SCM unmemocopy SCM_P ((SCM x, SCM env)); | |
927 | ||
6dbd0af5 MD |
928 | static SCM |
929 | unmemocopy (x, env) | |
930 | SCM x; | |
931 | SCM env; | |
6dbd0af5 MD |
932 | { |
933 | SCM ls, z; | |
934 | #ifdef DEBUG_EXTENSIONS | |
935 | SCM p; | |
936 | #endif | |
937 | if (SCM_NCELLP (x) || SCM_NECONSP (x)) | |
938 | return x; | |
939 | #ifdef DEBUG_EXTENSIONS | |
940 | p = scm_whash_lookup (scm_source_whash, x); | |
941 | #endif | |
942 | switch (SCM_TYP7 (x)) | |
943 | { | |
944 | case (127 & SCM_IM_AND): | |
945 | ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED); | |
946 | break; | |
947 | case (127 & SCM_IM_BEGIN): | |
948 | ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED); | |
949 | break; | |
950 | case (127 & SCM_IM_CASE): | |
951 | ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED); | |
952 | break; | |
953 | case (127 & SCM_IM_COND): | |
954 | ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED); | |
955 | break; | |
956 | case (127 & SCM_IM_DO): | |
957 | ls = scm_cons (scm_i_do, SCM_UNSPECIFIED); | |
958 | goto transform; | |
959 | case (127 & SCM_IM_IF): | |
960 | ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED); | |
961 | break; | |
962 | case (127 & SCM_IM_LET): | |
963 | ls = scm_cons (scm_i_let, SCM_UNSPECIFIED); | |
964 | goto transform; | |
965 | case (127 & SCM_IM_LETREC): | |
966 | { | |
967 | SCM f, v, e, s; | |
968 | ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED); | |
969 | transform: | |
970 | x = SCM_CDR (x); | |
971 | f = v = SCM_CAR (x); | |
972 | x = SCM_CDR (x); | |
e2806c10 | 973 | z = EXTEND_ENV (f, SCM_EOL, env); |
6dbd0af5 MD |
974 | e = scm_reverse (unmemocopy (SCM_CAR (x), |
975 | SCM_CAR (ls) == scm_i_letrec ? z : env)); | |
976 | env = z; | |
977 | s = SCM_CAR (ls) == scm_i_do | |
978 | ? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env)) | |
979 | : f; | |
980 | z = SCM_EOL; | |
981 | do | |
982 | { | |
983 | z = scm_acons (SCM_CAR (v), | |
984 | scm_cons (SCM_CAR (e), | |
985 | SCM_CAR (s) == SCM_CAR (v) | |
986 | ? SCM_EOL | |
987 | : scm_cons (SCM_CAR (s), SCM_EOL)), | |
988 | z); | |
989 | v = SCM_CDR (v); | |
990 | e = SCM_CDR (e); | |
991 | s = SCM_CDR (s); | |
992 | } | |
993 | while SCM_NIMP (v); | |
a23afe53 MD |
994 | z = scm_cons (z, SCM_UNSPECIFIED); |
995 | SCM_SETCDR (ls, z); | |
6dbd0af5 MD |
996 | if (SCM_CAR (ls) == scm_i_do) |
997 | { | |
998 | x = SCM_CDR (x); | |
a23afe53 | 999 | SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env), |
6dbd0af5 | 1000 | SCM_UNSPECIFIED)); |
a23afe53 MD |
1001 | z = SCM_CDR (z); |
1002 | x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1); | |
6dbd0af5 MD |
1003 | } |
1004 | break; | |
1005 | } | |
1006 | case (127 & SCM_IM_LETSTAR): | |
1007 | { | |
1008 | SCM b, y; | |
1009 | x = SCM_CDR (x); | |
1010 | b = SCM_CAR (x); | |
1011 | y = SCM_EOL; | |
1012 | if SCM_IMP (b) | |
1013 | { | |
e2806c10 | 1014 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 MD |
1015 | goto letstar; |
1016 | } | |
1017 | y = z = scm_acons (SCM_CAR (b), | |
1018 | unmemocar ( | |
1019 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), | |
1020 | SCM_UNSPECIFIED); | |
e2806c10 | 1021 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1022 | b = SCM_CDR (SCM_CDR (b)); |
1023 | if (SCM_IMP (b)) | |
1024 | { | |
1025 | SCM_SETCDR (y, SCM_EOL); | |
1026 | ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1027 | break; | |
1028 | } | |
1029 | do | |
1030 | { | |
a23afe53 MD |
1031 | SCM_SETCDR (z, scm_acons (SCM_CAR (b), |
1032 | unmemocar ( | |
6dbd0af5 | 1033 | scm_cons (unmemocopy (SCM_CAR (SCM_CDR (b)), env), SCM_EOL), env), |
a23afe53 MD |
1034 | SCM_UNSPECIFIED)); |
1035 | z = SCM_CDR (z); | |
e2806c10 | 1036 | env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env); |
6dbd0af5 MD |
1037 | b = SCM_CDR (SCM_CDR (b)); |
1038 | } | |
1039 | while SCM_NIMP (b); | |
a23afe53 | 1040 | SCM_SETCDR (z, SCM_EOL); |
6dbd0af5 MD |
1041 | letstar: |
1042 | ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED)); | |
1043 | break; | |
1044 | } | |
1045 | case (127 & SCM_IM_OR): | |
1046 | ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED); | |
1047 | break; | |
1048 | case (127 & SCM_IM_LAMBDA): | |
1049 | x = SCM_CDR (x); | |
1050 | ls = scm_cons (scm_i_lambda, | |
1051 | z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED)); | |
e2806c10 | 1052 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env); |
6dbd0af5 MD |
1053 | break; |
1054 | case (127 & SCM_IM_QUOTE): | |
1055 | ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED); | |
1056 | break; | |
1057 | case (127 & SCM_IM_SET): | |
1058 | ls = z = scm_cons (scm_i_set, SCM_UNSPECIFIED); | |
1059 | break; | |
1060 | case (127 & SCM_IM_DEFINE): | |
1061 | { | |
1062 | SCM n; | |
1063 | x = SCM_CDR (x); | |
1064 | ls = scm_cons (scm_i_define, | |
1065 | z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED)); | |
1066 | if (SCM_NNULLP (env)) | |
a23afe53 | 1067 | SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env)))); |
6dbd0af5 MD |
1068 | break; |
1069 | } | |
1070 | case (127 & SCM_MAKISYM (0)): | |
1071 | z = SCM_CAR (x); | |
1072 | if (!SCM_ISYMP (z)) | |
1073 | goto unmemo; | |
1074 | switch SCM_ISYMNUM (z) | |
1075 | { | |
1076 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1077 | ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED); | |
1078 | goto loop; | |
1079 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1080 | ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED); | |
1081 | goto loop; | |
1082 | default: | |
fa888178 | 1083 | /* appease the Sun compiler god: */ ; |
6dbd0af5 MD |
1084 | } |
1085 | unmemo: | |
1086 | default: | |
1087 | ls = z = unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1088 | SCM_UNSPECIFIED), | |
1089 | env); | |
1090 | } | |
1091 | loop: | |
1092 | while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x)) | |
a23afe53 MD |
1093 | { |
1094 | SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env), | |
1095 | SCM_UNSPECIFIED), | |
1096 | env)); | |
1097 | z = SCM_CDR (z); | |
1098 | } | |
1099 | SCM_SETCDR (z, x); | |
6dbd0af5 MD |
1100 | #ifdef DEBUG_EXTENSIONS |
1101 | if (SCM_NFALSEP (p)) | |
1102 | scm_whash_insert (scm_source_whash, ls, p); | |
1103 | #endif | |
1104 | return ls; | |
1105 | } | |
1106 | ||
1cc91f1b | 1107 | |
6dbd0af5 MD |
1108 | SCM |
1109 | scm_unmemocopy (x, env) | |
1110 | SCM x; | |
1111 | SCM env; | |
6dbd0af5 MD |
1112 | { |
1113 | if (SCM_NNULLP (env)) | |
1114 | /* Make a copy of the lowest frame to protect it from | |
1115 | modifications by SCM_IM_DEFINE */ | |
1116 | return unmemocopy (x, scm_cons (SCM_CAR (env), SCM_CDR (env))); | |
1117 | else | |
1118 | return unmemocopy (x, env); | |
1119 | } | |
1120 | ||
0f2d19dd | 1121 | #ifndef RECKLESS |
1cc91f1b | 1122 | |
0f2d19dd JB |
1123 | int |
1124 | scm_badargsp (formals, args) | |
1125 | SCM formals; | |
1126 | SCM args; | |
0f2d19dd JB |
1127 | { |
1128 | while SCM_NIMP | |
1129 | (formals) | |
1130 | { | |
1131 | if SCM_NCONSP | |
1132 | (formals) return 0; | |
1133 | if SCM_IMP | |
1134 | (args) return 1; | |
1135 | formals = SCM_CDR (formals); | |
1136 | args = SCM_CDR (args); | |
1137 | } | |
1138 | return SCM_NNULLP (args) ? 1 : 0; | |
1139 | } | |
1140 | #endif | |
1141 | ||
1142 | ||
1143 | \f | |
1144 | long scm_tc16_macro; | |
1145 | ||
1cc91f1b | 1146 | |
6dbd0af5 MD |
1147 | SCM |
1148 | scm_eval_args (l, env) | |
1149 | SCM l; | |
1150 | SCM env; | |
6dbd0af5 MD |
1151 | { |
1152 | SCM res = SCM_EOL, *lloc = &res; | |
1153 | while (SCM_NIMP (l)) | |
1154 | { | |
1155 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
a23afe53 | 1156 | lloc = SCM_CDRLOC (*lloc); |
6dbd0af5 MD |
1157 | l = SCM_CDR (l); |
1158 | } | |
1159 | return res; | |
1160 | } | |
0f2d19dd JB |
1161 | #endif /* !DEVAL */ |
1162 | ||
6dbd0af5 MD |
1163 | |
1164 | /* SECTION: This code is specific for the debugging support. One | |
1165 | * branch is read when DEVAL isn't defined, the other when DEVAL is | |
1166 | * defined. | |
1167 | */ | |
1168 | ||
1169 | #ifndef DEVAL | |
1170 | ||
1171 | #define SCM_APPLY scm_apply | |
1172 | #define PREP_APPLY(proc, args) | |
1173 | #define ENTER_APPLY | |
1174 | #define RETURN(x) return x; | |
b7ff98dd MD |
1175 | #ifdef STACK_CHECKING |
1176 | #ifndef NO_CEVAL_STACK_CHECKING | |
1177 | #define EVAL_STACK_CHECKING | |
1178 | #endif | |
6dbd0af5 MD |
1179 | #endif |
1180 | ||
1181 | #else /* !DEVAL */ | |
1182 | ||
0f2d19dd JB |
1183 | #undef SCM_CEVAL |
1184 | #define SCM_CEVAL scm_deval /* Substitute all uses of scm_ceval */ | |
1185 | #undef SCM_APPLY | |
1186 | #define SCM_APPLY scm_dapply | |
6dbd0af5 MD |
1187 | #undef PREP_APPLY |
1188 | #define PREP_APPLY(p, l) \ | |
1189 | { ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; } | |
1190 | #undef ENTER_APPLY | |
1191 | #define ENTER_APPLY \ | |
1192 | {\ | |
b7ff98dd | 1193 | SCM_SET_ARGSREADY (debug);\ |
6dbd0af5 | 1194 | if (CHECK_APPLY)\ |
b7ff98dd | 1195 | if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\ |
6dbd0af5 | 1196 | {\ |
b7ff98dd MD |
1197 | SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\ |
1198 | SCM_SET_TRACED_FRAME (debug);\ | |
1199 | if (SCM_CHEAPTRAPS_P)\ | |
6dbd0af5 | 1200 | {\ |
c0ab1b8d | 1201 | tmp = scm_make_debugobj (&debug);\ |
6dbd0af5 MD |
1202 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ |
1203 | }\ | |
1204 | else\ | |
1205 | {\ | |
1206 | scm_make_cont (&tmp);\ | |
1207 | if (!setjmp (SCM_JMPBUF (tmp)))\ | |
1208 | scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\ | |
1209 | }\ | |
1210 | }\ | |
1211 | } | |
0f2d19dd JB |
1212 | #undef RETURN |
1213 | #define RETURN(e) {proc = (e); goto exit;} | |
b7ff98dd MD |
1214 | #ifdef STACK_CHECKING |
1215 | #ifndef EVAL_STACK_CHECKING | |
1216 | #define EVAL_STACK_CHECKING | |
1217 | #endif | |
6dbd0af5 MD |
1218 | #endif |
1219 | ||
1220 | /* scm_ceval_ptr points to the currently selected evaluator. | |
1221 | * *fixme*: Although efficiency is important here, this state variable | |
1222 | * should probably not be a global. It should be related to the | |
1223 | * current repl. | |
1224 | */ | |
1225 | ||
1cc91f1b JB |
1226 | |
1227 | SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env)); | |
0f2d19dd | 1228 | |
1646d37b | 1229 | /* scm_last_debug_frame contains a pointer to the last debugging |
6dbd0af5 MD |
1230 | * information stack frame. It is accessed very often from the |
1231 | * debugging evaluator, so it should probably not be indirectly | |
1232 | * addressed. Better to save and restore it from the current root at | |
1233 | * any stack swaps. | |
1234 | */ | |
1235 | ||
1646d37b MD |
1236 | #ifndef USE_THREADS |
1237 | scm_debug_frame *scm_last_debug_frame; | |
1238 | #endif | |
6dbd0af5 MD |
1239 | |
1240 | /* scm_debug_eframe_size is the number of slots available for pseudo | |
1241 | * stack frames at each real stack frame. | |
1242 | */ | |
1243 | ||
1244 | int scm_debug_eframe_size; | |
1245 | ||
b7ff98dd | 1246 | int scm_debug_mode, scm_check_entry_p, scm_check_apply_p, scm_check_exit_p; |
6dbd0af5 MD |
1247 | |
1248 | scm_option scm_debug_opts[] = { | |
b7ff98dd MD |
1249 | { SCM_OPTION_BOOLEAN, "cheap", 1, |
1250 | "*Flyweight representation of the stack at traps." }, | |
1251 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
1252 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
1253 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
1254 | "Record procedure names at definition." }, | |
1255 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
1256 | "Display backtrace in anti-chronological order." }, | |
4e646a03 MD |
1257 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, |
1258 | { SCM_OPTION_INTEGER, "frames", 3, | |
b7ff98dd | 1259 | "Maximum number of tail-recursive frames in backtrace." }, |
4e646a03 MD |
1260 | { SCM_OPTION_INTEGER, "maxdepth", 1000, |
1261 | "Maximal number of stored backtrace frames." }, | |
1262 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
11f77bfc MD |
1263 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, |
1264 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
b7ff98dd | 1265 | { SCM_OPTION_INTEGER, "stack", 20000, "Stack size limit (0 = no check)." } |
6dbd0af5 MD |
1266 | }; |
1267 | ||
1268 | scm_option scm_evaluator_trap_table[] = { | |
b7ff98dd MD |
1269 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, |
1270 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
1271 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." } | |
6dbd0af5 MD |
1272 | }; |
1273 | ||
1274 | SCM | |
1275 | scm_deval_args (l, env, lloc) | |
1276 | SCM l, env, *lloc; | |
0f2d19dd | 1277 | { |
6dbd0af5 | 1278 | SCM *res = lloc; |
0f2d19dd JB |
1279 | while (SCM_NIMP (l)) |
1280 | { | |
1281 | *lloc = scm_cons (EVALCAR (l, env), SCM_EOL); | |
a23afe53 | 1282 | lloc = SCM_CDRLOC (*lloc); |
0f2d19dd JB |
1283 | l = SCM_CDR (l); |
1284 | } | |
6dbd0af5 | 1285 | return *res; |
0f2d19dd JB |
1286 | } |
1287 | ||
6dbd0af5 MD |
1288 | #endif /* !DEVAL */ |
1289 | ||
1290 | ||
1291 | /* SECTION: Some local definitions for the evaluator. | |
1292 | */ | |
1293 | ||
1294 | #ifndef DEVAL | |
1295 | #ifdef SCM_FLOATS | |
1296 | #define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B))))) | |
1297 | #else | |
1298 | #define CHECK_EQVISH(A,B) ((A) == (B)) | |
1299 | #endif | |
1300 | #endif /* DEVAL */ | |
1301 | ||
1302 | ||
1303 | /* SECTION: This is the evaluator. Like any real monster, it has | |
1304 | * three heads. This code is compiled twice. | |
1305 | */ | |
1306 | ||
0f2d19dd | 1307 | #if 0 |
1cc91f1b | 1308 | |
0f2d19dd JB |
1309 | SCM |
1310 | scm_ceval (x, env) | |
1311 | SCM x; | |
1312 | SCM env; | |
0f2d19dd JB |
1313 | {} |
1314 | #endif | |
1315 | #if 0 | |
1cc91f1b | 1316 | |
0f2d19dd JB |
1317 | SCM |
1318 | scm_deval (x, env) | |
1319 | SCM x; | |
1320 | SCM env; | |
0f2d19dd JB |
1321 | {} |
1322 | #endif | |
1323 | ||
1cc91f1b | 1324 | |
6dbd0af5 | 1325 | SCM |
0f2d19dd JB |
1326 | SCM_CEVAL (x, env) |
1327 | SCM x; | |
1328 | SCM env; | |
1329 | { | |
1330 | union | |
1331 | { | |
1332 | SCM *lloc; | |
1333 | SCM arg1; | |
1334 | } t; | |
6dbd0af5 MD |
1335 | SCM proc, arg2; |
1336 | #ifdef DEVAL | |
c0ab1b8d JB |
1337 | scm_debug_frame debug; |
1338 | scm_debug_info *debug_info_end; | |
1646d37b | 1339 | debug.prev = scm_last_debug_frame; |
6dbd0af5 | 1340 | debug.status = scm_debug_eframe_size; |
c0ab1b8d JB |
1341 | debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size |
1342 | * sizeof (debug.vect[0])); | |
1343 | debug.info = debug.vect; | |
1344 | debug_info_end = debug.vect + scm_debug_eframe_size; | |
1345 | scm_last_debug_frame = &debug; | |
6dbd0af5 | 1346 | #endif |
b7ff98dd MD |
1347 | #ifdef EVAL_STACK_CHECKING |
1348 | if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc) | |
1349 | && scm_stack_checking_enabled_p) | |
6dbd0af5 | 1350 | { |
b7ff98dd | 1351 | #ifdef DEVAL |
6dbd0af5 MD |
1352 | debug.info->e.exp = x; |
1353 | debug.info->e.env = env; | |
b7ff98dd | 1354 | #endif |
6dbd0af5 MD |
1355 | scm_report_stack_overflow (); |
1356 | } | |
1357 | #endif | |
1358 | #ifdef DEVAL | |
1359 | goto start; | |
1360 | #endif | |
1361 | loopnoap: | |
1362 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1363 | loop: | |
1364 | #ifdef DEVAL | |
1365 | #if 0 /* This will probably never have any practical use ... */ | |
1366 | if (CHECK_EXIT) | |
1367 | { | |
b7ff98dd | 1368 | if (SINGLE_STEP || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 MD |
1369 | { |
1370 | SINGLE_STEP = 0; | |
b7ff98dd MD |
1371 | SCM_RESET_DEBUG_MODE; |
1372 | SCM_CLEAR_TRACED_FRAME (debug); | |
6dbd0af5 MD |
1373 | scm_make_cont (&t.arg1); |
1374 | if (!setjmp (SCM_JMPBUF (t.arg1))) | |
1375 | scm_ithrow (scm_i_exit_tail, scm_cons (t.arg1, SCM_EOL), 0); | |
1376 | } | |
1377 | } | |
1378 | nextframe: | |
1379 | #endif | |
b7ff98dd MD |
1380 | SCM_CLEAR_ARGSREADY (debug); |
1381 | if (SCM_OVERFLOWP (debug)) | |
6dbd0af5 | 1382 | --debug.info; |
c0ab1b8d | 1383 | else if (++debug.info >= debug_info_end) |
6dbd0af5 | 1384 | { |
b7ff98dd | 1385 | SCM_SET_OVERFLOW (debug); |
6dbd0af5 MD |
1386 | debug.info -= 2; |
1387 | } | |
1388 | start: | |
1389 | debug.info->e.exp = x; | |
1390 | debug.info->e.env = env; | |
1391 | if (CHECK_ENTRY) | |
b7ff98dd | 1392 | if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x))) |
6dbd0af5 | 1393 | { |
b7ff98dd MD |
1394 | SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F; |
1395 | SCM_SET_TAILREC (debug); | |
1396 | SCM_ENTER_FRAME_P = 0; | |
1397 | SCM_RESET_DEBUG_MODE; | |
1398 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 1399 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
1400 | else |
1401 | { | |
1402 | scm_make_cont (&t.arg1); | |
1403 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1404 | { | |
1405 | x = SCM_THROW_VALUE (t.arg1); | |
1406 | if (SCM_IMP (x)) | |
1407 | { | |
1408 | RETURN (x); | |
1409 | } | |
1410 | else | |
1411 | /* This gives the possibility for the debugger to | |
1412 | modify the source expression before evaluation. */ | |
1413 | goto dispatch; | |
1414 | } | |
1415 | } | |
1416 | scm_ithrow (scm_i_enter_frame, | |
1417 | scm_cons2 (t.arg1, tail, | |
1418 | scm_cons (scm_unmemocopy (x, env), SCM_EOL)), | |
1419 | 0); | |
1420 | } | |
1421 | dispatch: | |
1422 | #endif | |
0f2d19dd | 1423 | SCM_ASYNC_TICK; |
0f2d19dd JB |
1424 | switch (SCM_TYP7 (x)) |
1425 | { | |
1426 | case scm_tcs_symbols: | |
1427 | /* Only happens when called at top level. | |
1428 | */ | |
1429 | x = scm_cons (x, SCM_UNDEFINED); | |
1430 | goto retval; | |
1431 | ||
1432 | case (127 & SCM_IM_AND): | |
1433 | x = SCM_CDR (x); | |
1434 | t.arg1 = x; | |
1435 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1436 | if (SCM_FALSEP (EVALCAR (x, env))) | |
1437 | { | |
1438 | RETURN (SCM_BOOL_F); | |
1439 | } | |
1440 | else | |
1441 | x = t.arg1; | |
6dbd0af5 | 1442 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1443 | goto carloop; |
1444 | ||
1445 | case (127 & SCM_IM_BEGIN): | |
6dbd0af5 MD |
1446 | cdrxnoap: |
1447 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1448 | cdrxbegin: |
1449 | x = SCM_CDR (x); | |
1450 | ||
1451 | begin: | |
1452 | t.arg1 = x; | |
1453 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1454 | { | |
1455 | SIDEVAL (SCM_CAR (x), env); | |
1456 | x = t.arg1; | |
1457 | } | |
1458 | ||
1459 | carloop: /* scm_eval car of last form in list */ | |
1460 | if (SCM_NCELLP (SCM_CAR (x))) | |
1461 | { | |
1462 | x = SCM_CAR (x); | |
6dbd0af5 | 1463 | RETURN (SCM_IMP (x) ? EVALIM (x, env) : SCM_GLOC_VAL (x)) |
0f2d19dd JB |
1464 | } |
1465 | ||
1466 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1467 | { | |
1468 | retval: | |
6dbd0af5 | 1469 | RETURN (*scm_lookupcar (x, env)) |
0f2d19dd JB |
1470 | } |
1471 | ||
1472 | x = SCM_CAR (x); | |
1473 | goto loop; /* tail recurse */ | |
1474 | ||
1475 | ||
1476 | case (127 & SCM_IM_CASE): | |
1477 | x = SCM_CDR (x); | |
1478 | t.arg1 = EVALCAR (x, env); | |
1479 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1480 | { | |
1481 | proc = SCM_CAR (x); | |
1482 | if (scm_i_else == SCM_CAR (proc)) | |
1483 | { | |
1484 | x = SCM_CDR (proc); | |
6dbd0af5 | 1485 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1486 | goto begin; |
1487 | } | |
1488 | proc = SCM_CAR (proc); | |
1489 | while (SCM_NIMP (proc)) | |
1490 | { | |
1491 | if (CHECK_EQVISH (SCM_CAR (proc), t.arg1)) | |
1492 | { | |
1493 | x = SCM_CDR (SCM_CAR (x)); | |
6dbd0af5 | 1494 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1495 | goto begin; |
1496 | } | |
1497 | proc = SCM_CDR (proc); | |
1498 | } | |
1499 | } | |
6dbd0af5 | 1500 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1501 | |
1502 | ||
1503 | case (127 & SCM_IM_COND): | |
1504 | while (SCM_NIMP (x = SCM_CDR (x))) | |
1505 | { | |
1506 | proc = SCM_CAR (x); | |
1507 | t.arg1 = EVALCAR (proc, env); | |
1508 | if (SCM_NFALSEP (t.arg1)) | |
1509 | { | |
1510 | x = SCM_CDR (proc); | |
6dbd0af5 | 1511 | if SCM_NULLP (x) |
0f2d19dd | 1512 | { |
6dbd0af5 | 1513 | RETURN (t.arg1) |
0f2d19dd JB |
1514 | } |
1515 | if (scm_i_arrow != SCM_CAR (x)) | |
6dbd0af5 MD |
1516 | { |
1517 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
1518 | goto begin; | |
1519 | } | |
0f2d19dd JB |
1520 | proc = SCM_CDR (x); |
1521 | proc = EVALCAR (proc, env); | |
1522 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1523 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1524 | ENTER_APPLY; | |
0f2d19dd JB |
1525 | goto evap1; |
1526 | } | |
1527 | } | |
6dbd0af5 | 1528 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1529 | |
1530 | ||
1531 | case (127 & SCM_IM_DO): | |
1532 | x = SCM_CDR (x); | |
1533 | proc = SCM_CAR (SCM_CDR (x)); /* inits */ | |
1534 | t.arg1 = SCM_EOL; /* values */ | |
1535 | while (SCM_NIMP (proc)) | |
1536 | { | |
1537 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1538 | proc = SCM_CDR (proc); | |
1539 | } | |
e2806c10 | 1540 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd JB |
1541 | x = SCM_CDR (SCM_CDR (x)); |
1542 | while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env))) | |
1543 | { | |
1544 | for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1545 | { | |
1546 | t.arg1 = SCM_CAR (proc); /* body */ | |
1547 | SIDEVAL (t.arg1, env); | |
1548 | } | |
1549 | for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc)) | |
1550 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */ | |
e2806c10 | 1551 | env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env)); |
0f2d19dd JB |
1552 | } |
1553 | x = SCM_CDR (proc); | |
1554 | if (SCM_NULLP (x)) | |
6dbd0af5 MD |
1555 | RETURN (SCM_UNSPECIFIED); |
1556 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); | |
0f2d19dd JB |
1557 | goto begin; |
1558 | ||
1559 | ||
1560 | case (127 & SCM_IM_IF): | |
1561 | x = SCM_CDR (x); | |
1562 | if (SCM_NFALSEP (EVALCAR (x, env))) | |
1563 | x = SCM_CDR (x); | |
1564 | else if (SCM_IMP (x = SCM_CDR (SCM_CDR (x)))) | |
1565 | { | |
1566 | RETURN (SCM_UNSPECIFIED); | |
1567 | } | |
6dbd0af5 | 1568 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1569 | goto carloop; |
1570 | ||
1571 | ||
1572 | case (127 & SCM_IM_LET): | |
1573 | x = SCM_CDR (x); | |
1574 | proc = SCM_CAR (SCM_CDR (x)); | |
1575 | t.arg1 = SCM_EOL; | |
1576 | do | |
1577 | { | |
1578 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1579 | } | |
1580 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
e2806c10 | 1581 | env = EXTEND_ENV (SCM_CAR (x), t.arg1, env); |
0f2d19dd | 1582 | x = SCM_CDR (x); |
6dbd0af5 | 1583 | goto cdrxnoap; |
0f2d19dd JB |
1584 | |
1585 | ||
1586 | case (127 & SCM_IM_LETREC): | |
1587 | x = SCM_CDR (x); | |
e2806c10 | 1588 | env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env); |
0f2d19dd JB |
1589 | x = SCM_CDR (x); |
1590 | proc = SCM_CAR (x); | |
1591 | t.arg1 = SCM_EOL; | |
1592 | do | |
1593 | { | |
1594 | t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); | |
1595 | } | |
1596 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
a23afe53 | 1597 | SCM_SETCDR (SCM_CAR (env), t.arg1); |
6dbd0af5 | 1598 | goto cdrxnoap; |
0f2d19dd JB |
1599 | |
1600 | ||
1601 | case (127 & SCM_IM_LETSTAR): | |
1602 | x = SCM_CDR (x); | |
1603 | proc = SCM_CAR (x); | |
1604 | if (SCM_IMP (proc)) | |
1605 | { | |
e2806c10 | 1606 | env = EXTEND_ENV (SCM_EOL, SCM_EOL, env); |
6dbd0af5 | 1607 | goto cdrxnoap; |
0f2d19dd JB |
1608 | } |
1609 | do | |
1610 | { | |
1611 | t.arg1 = SCM_CAR (proc); | |
1612 | proc = SCM_CDR (proc); | |
e2806c10 | 1613 | env = EXTEND_ENV (t.arg1, EVALCAR (proc, env), env); |
0f2d19dd JB |
1614 | } |
1615 | while (SCM_NIMP (proc = SCM_CDR (proc))); | |
6dbd0af5 | 1616 | goto cdrxnoap; |
0f2d19dd JB |
1617 | |
1618 | case (127 & SCM_IM_OR): | |
1619 | x = SCM_CDR (x); | |
1620 | t.arg1 = x; | |
1621 | while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1))) | |
1622 | { | |
1623 | x = EVALCAR (x, env); | |
1624 | if (SCM_NFALSEP (x)) | |
1625 | { | |
1626 | RETURN (x); | |
1627 | } | |
1628 | x = t.arg1; | |
1629 | } | |
6dbd0af5 | 1630 | PREP_APPLY (SCM_UNDEFINED, SCM_EOL); |
0f2d19dd JB |
1631 | goto carloop; |
1632 | ||
1633 | ||
1634 | case (127 & SCM_IM_LAMBDA): | |
1635 | RETURN (scm_closure (SCM_CDR (x), env)); | |
1636 | ||
1637 | ||
1638 | case (127 & SCM_IM_QUOTE): | |
1639 | RETURN (SCM_CAR (SCM_CDR (x))); | |
1640 | ||
1641 | ||
1642 | case (127 & SCM_IM_SET): | |
0f2d19dd JB |
1643 | x = SCM_CDR (x); |
1644 | proc = SCM_CAR (x); | |
6dbd0af5 | 1645 | switch (7 & (int) proc) |
0f2d19dd JB |
1646 | { |
1647 | case 0: | |
1648 | t.lloc = scm_lookupcar (x, env); | |
1649 | break; | |
1650 | case 1: | |
a23afe53 | 1651 | t.lloc = SCM_GLOC_VAL_LOC (proc); |
0f2d19dd JB |
1652 | break; |
1653 | #ifdef MEMOIZE_LOCALS | |
1654 | case 4: | |
1655 | t.lloc = scm_ilookup (proc, env); | |
1656 | break; | |
1657 | #endif | |
1658 | } | |
1659 | x = SCM_CDR (x); | |
1660 | *t.lloc = EVALCAR (x, env); | |
0f2d19dd JB |
1661 | #ifdef SICP |
1662 | RETURN (*t.lloc); | |
1663 | #else | |
1664 | RETURN (SCM_UNSPECIFIED); | |
1665 | #endif | |
1666 | ||
1667 | ||
1668 | case (127 & SCM_IM_DEFINE): /* only for internal defines */ | |
1669 | x = SCM_CDR (x); | |
1670 | proc = SCM_CAR (x); | |
1671 | x = SCM_CDR (x); | |
1672 | x = evalcar (x, env); | |
6dbd0af5 | 1673 | #ifdef DEBUG_EXTENSIONS |
b7ff98dd | 1674 | if (SCM_REC_PROCNAMES_P && SCM_NIMP (x) && SCM_CLOSUREP (x)) |
6dbd0af5 MD |
1675 | scm_set_procedure_property_x (x, scm_i_name, proc); |
1676 | #endif | |
0f2d19dd JB |
1677 | env = SCM_CAR (env); |
1678 | SCM_DEFER_INTS; | |
a23afe53 MD |
1679 | SCM_SETCAR (env, scm_cons (proc, SCM_CAR (env))); |
1680 | SCM_SETCDR (env, scm_cons (x, SCM_CDR (env))); | |
0f2d19dd JB |
1681 | SCM_ALLOW_INTS; |
1682 | RETURN (SCM_UNSPECIFIED); | |
1683 | ||
1684 | ||
0f2d19dd JB |
1685 | /* new syntactic forms go here. */ |
1686 | case (127 & SCM_MAKISYM (0)): | |
1687 | proc = SCM_CAR (x); | |
1688 | SCM_ASRTGO (SCM_ISYMP (proc), badfun); | |
1689 | switch SCM_ISYMNUM (proc) | |
1690 | { | |
1691 | #if 0 | |
1692 | case (SCM_ISYMNUM (IM_VREF)): | |
1693 | { | |
1694 | SCM var; | |
1695 | var = SCM_CAR (SCM_CDR (x)); | |
1696 | RETURN (SCM_CDR(var)); | |
1697 | } | |
1698 | case (SCM_ISYMNUM (IM_VSET)): | |
1699 | SCM_CDR (SCM_CAR ( SCM_CDR (x))) = EVALCAR( SCM_CDR ( SCM_CDR (x)), env); | |
1700 | SCM_CAR (SCM_CAR ( SCM_CDR (x))) = scm_tc16_variable; | |
6dbd0af5 | 1701 | RETURN (SCM_UNSPECIFIED) |
0f2d19dd JB |
1702 | #endif |
1703 | ||
1704 | case (SCM_ISYMNUM (SCM_IM_APPLY)): | |
1705 | proc = SCM_CDR (x); | |
1706 | proc = EVALCAR (proc, env); | |
1707 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1708 | if (SCM_CLOSUREP (proc)) | |
1709 | { | |
6dbd0af5 | 1710 | PREP_APPLY (proc, SCM_EOL); |
0f2d19dd JB |
1711 | t.arg1 = SCM_CDR (SCM_CDR (x)); |
1712 | t.arg1 = EVALCAR (t.arg1, env); | |
6dbd0af5 MD |
1713 | #ifdef DEVAL |
1714 | debug.info->a.args = t.arg1; | |
1715 | #endif | |
0f2d19dd JB |
1716 | #ifndef RECKLESS |
1717 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1)) | |
1718 | goto wrongnumargs; | |
1719 | #endif | |
e2806c10 | 1720 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), t.arg1, SCM_ENV (proc)); |
0f2d19dd JB |
1721 | x = SCM_CODE (proc); |
1722 | goto cdrxbegin; | |
1723 | } | |
1724 | proc = scm_i_apply; | |
1725 | goto evapply; | |
1726 | ||
1727 | case (SCM_ISYMNUM (SCM_IM_CONT)): | |
1728 | scm_make_cont (&t.arg1); | |
1729 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
1730 | { | |
1731 | SCM val; | |
1732 | val = SCM_THROW_VALUE (t.arg1); | |
6dbd0af5 | 1733 | RETURN (val); |
0f2d19dd JB |
1734 | } |
1735 | proc = SCM_CDR (x); | |
1736 | proc = evalcar (proc, env); | |
1737 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
6dbd0af5 MD |
1738 | PREP_APPLY (proc, scm_cons (t.arg1, SCM_EOL)); |
1739 | ENTER_APPLY; | |
0f2d19dd JB |
1740 | goto evap1; |
1741 | ||
1742 | default: | |
1743 | goto badfun; | |
1744 | } | |
1745 | ||
1746 | default: | |
1747 | proc = x; | |
1748 | badfun: | |
f5bf2977 | 1749 | /* scm_everr (x, env,...) */ |
523f5266 GH |
1750 | scm_misc_error (NULL, |
1751 | "Wrong type to apply: %S", | |
1752 | scm_listify (proc, SCM_UNDEFINED)); | |
0f2d19dd JB |
1753 | case scm_tc7_vector: |
1754 | case scm_tc7_wvect: | |
1755 | case scm_tc7_bvect: | |
1756 | case scm_tc7_byvect: | |
1757 | case scm_tc7_svect: | |
1758 | case scm_tc7_ivect: | |
1759 | case scm_tc7_uvect: | |
1760 | case scm_tc7_fvect: | |
1761 | case scm_tc7_dvect: | |
1762 | case scm_tc7_cvect: | |
1763 | #ifdef LONGLONGS | |
1764 | case scm_tc7_llvect: | |
1765 | #endif | |
1766 | case scm_tc7_string: | |
1767 | case scm_tc7_mb_string: | |
1768 | case scm_tc7_substring: | |
1769 | case scm_tc7_mb_substring: | |
1770 | case scm_tc7_smob: | |
1771 | case scm_tcs_closures: | |
1772 | case scm_tcs_subrs: | |
1773 | RETURN (x); | |
1774 | ||
1775 | #ifdef MEMOIZE_LOCALS | |
1776 | case (127 & SCM_ILOC00): | |
1777 | proc = *scm_ilookup (SCM_CAR (x), env); | |
1778 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1779 | #ifndef RECKLESS | |
1780 | #ifdef CAUTIOUS | |
1781 | goto checkargs; | |
1782 | #endif | |
1783 | #endif | |
1784 | break; | |
1785 | #endif /* ifdef MEMOIZE_LOCALS */ | |
1786 | ||
1787 | ||
1788 | case scm_tcs_cons_gloc: | |
1789 | proc = SCM_GLOC_VAL (SCM_CAR (x)); | |
1790 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1791 | #ifndef RECKLESS | |
1792 | #ifdef CAUTIOUS | |
1793 | goto checkargs; | |
1794 | #endif | |
1795 | #endif | |
1796 | break; | |
1797 | ||
1798 | ||
1799 | case scm_tcs_cons_nimcar: | |
1800 | if (SCM_SYMBOLP (SCM_CAR (x))) | |
1801 | { | |
1802 | proc = *scm_lookupcar (x, env); | |
1803 | if (SCM_IMP (proc)) | |
1804 | { | |
1805 | unmemocar (x, env); | |
1806 | goto badfun; | |
1807 | } | |
1808 | if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1809 | { | |
1810 | unmemocar (x, env); | |
1811 | ||
1812 | handle_a_macro: | |
1813 | t.arg1 = SCM_APPLY (SCM_CDR (proc), x, scm_cons (env, scm_listofnull)); | |
1814 | switch ((int) (SCM_CAR (proc) >> 16)) | |
1815 | { | |
1816 | case 2: | |
1817 | if (scm_ilength (t.arg1) <= 0) | |
1818 | t.arg1 = scm_cons2 (SCM_IM_BEGIN, t.arg1, SCM_EOL); | |
6dbd0af5 MD |
1819 | #ifdef DEVAL |
1820 | if (!SCM_CLOSUREP (SCM_CDR (proc))) | |
1821 | { | |
1822 | #if 0 /* Top-level defines doesn't very often occur in backtraces */ | |
1823 | if (scm_m_define == SCM_SUBRF (SCM_CDR (proc)) && SCM_TOP_LEVEL (env)) | |
1824 | /* Prevent memoizing result of define macro */ | |
1825 | { | |
1826 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1827 | scm_set_source_properties_x (debug.info->e.exp, | |
1828 | scm_source_properties (x)); | |
1829 | } | |
1830 | #endif | |
1831 | SCM_DEFER_INTS; | |
a23afe53 MD |
1832 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
1833 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
6dbd0af5 MD |
1834 | SCM_ALLOW_INTS; |
1835 | goto dispatch; | |
1836 | } | |
1837 | /* Prevent memoizing of debug info expression. */ | |
1838 | debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x)); | |
1839 | scm_set_source_properties_x (debug.info->e.exp, | |
1840 | scm_source_properties (x)); | |
1841 | #endif | |
0f2d19dd | 1842 | SCM_DEFER_INTS; |
a23afe53 MD |
1843 | SCM_SETCAR (x, SCM_CAR (t.arg1)); |
1844 | SCM_SETCDR (x, SCM_CDR (t.arg1)); | |
0f2d19dd | 1845 | SCM_ALLOW_INTS; |
6dbd0af5 | 1846 | goto loopnoap; |
0f2d19dd JB |
1847 | case 1: |
1848 | if (SCM_NIMP (x = t.arg1)) | |
6dbd0af5 | 1849 | goto loopnoap; |
0f2d19dd JB |
1850 | case 0: |
1851 | RETURN (t.arg1); | |
1852 | } | |
1853 | } | |
1854 | } | |
1855 | else | |
1856 | proc = SCM_CEVAL (SCM_CAR (x), env); | |
1857 | SCM_ASRTGO (SCM_NIMP (proc), badfun); | |
1858 | #ifndef RECKLESS | |
1859 | #ifdef CAUTIOUS | |
1860 | checkargs: | |
1861 | #endif | |
1862 | if (SCM_CLOSUREP (proc)) | |
1863 | { | |
1864 | arg2 = SCM_CAR (SCM_CODE (proc)); | |
1865 | t.arg1 = SCM_CDR (x); | |
1866 | while (SCM_NIMP (arg2)) | |
1867 | { | |
1868 | if (SCM_NCONSP (arg2)) | |
1869 | goto evapply; | |
1870 | if (SCM_IMP (t.arg1)) | |
1871 | goto umwrongnumargs; | |
1872 | arg2 = SCM_CDR (arg2); | |
1873 | t.arg1 = SCM_CDR (t.arg1); | |
1874 | } | |
1875 | if (SCM_NNULLP (t.arg1)) | |
1876 | goto umwrongnumargs; | |
1877 | } | |
1878 | else if (scm_tc16_macro == SCM_TYP16 (proc)) | |
1879 | goto handle_a_macro; | |
1880 | #endif | |
1881 | } | |
1882 | ||
1883 | ||
6dbd0af5 MD |
1884 | evapply: |
1885 | PREP_APPLY (proc, SCM_EOL); | |
1886 | if (SCM_NULLP (SCM_CDR (x))) { | |
1887 | ENTER_APPLY; | |
0f2d19dd JB |
1888 | switch (SCM_TYP7 (proc)) |
1889 | { /* no arguments given */ | |
1890 | case scm_tc7_subr_0: | |
1891 | RETURN (SCM_SUBRF (proc) ()); | |
1892 | case scm_tc7_subr_1o: | |
1893 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED)); | |
1894 | case scm_tc7_lsubr: | |
1895 | RETURN (SCM_SUBRF (proc) (SCM_EOL)); | |
1896 | case scm_tc7_rpsubr: | |
1897 | RETURN (SCM_BOOL_T); | |
1898 | case scm_tc7_asubr: | |
1899 | RETURN (SCM_SUBRF (proc) (SCM_UNDEFINED, SCM_UNDEFINED)); | |
6dbd0af5 | 1900 | #ifdef CCLO |
0f2d19dd JB |
1901 | case scm_tc7_cclo: |
1902 | t.arg1 = proc; | |
1903 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
1904 | #ifdef DEVAL |
1905 | debug.info->a.proc = proc; | |
1906 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
1907 | #endif | |
0f2d19dd | 1908 | goto evap1; |
6dbd0af5 | 1909 | #endif |
0f2d19dd JB |
1910 | case scm_tcs_closures: |
1911 | x = SCM_CODE (proc); | |
e2806c10 | 1912 | env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc)); |
0f2d19dd JB |
1913 | goto cdrxbegin; |
1914 | case scm_tc7_contin: | |
1915 | case scm_tc7_subr_1: | |
1916 | case scm_tc7_subr_2: | |
1917 | case scm_tc7_subr_2o: | |
1918 | case scm_tc7_cxr: | |
1919 | case scm_tc7_subr_3: | |
1920 | case scm_tc7_lsubr_2: | |
1921 | umwrongnumargs: | |
1922 | unmemocar (x, env); | |
1923 | wrongnumargs: | |
f5bf2977 GH |
1924 | /* scm_everr (x, env,...) */ |
1925 | scm_wrong_num_args (proc); | |
0f2d19dd JB |
1926 | default: |
1927 | /* handle macros here */ | |
1928 | goto badfun; | |
1929 | } | |
6dbd0af5 | 1930 | } |
0f2d19dd JB |
1931 | |
1932 | /* must handle macros by here */ | |
1933 | x = SCM_CDR (x); | |
1934 | #ifdef CAUTIOUS | |
1935 | if (SCM_IMP (x)) | |
1936 | goto wrongnumargs; | |
1937 | #endif | |
1938 | t.arg1 = EVALCAR (x, env); | |
6dbd0af5 MD |
1939 | #ifdef DEVAL |
1940 | debug.info->a.args = scm_cons (t.arg1, SCM_EOL); | |
1941 | #endif | |
0f2d19dd JB |
1942 | x = SCM_CDR (x); |
1943 | if (SCM_NULLP (x)) | |
1944 | { | |
6dbd0af5 | 1945 | ENTER_APPLY; |
0f2d19dd JB |
1946 | evap1: |
1947 | switch (SCM_TYP7 (proc)) | |
6dbd0af5 | 1948 | { /* have one argument in t.arg1 */ |
0f2d19dd JB |
1949 | case scm_tc7_subr_2o: |
1950 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
1951 | case scm_tc7_subr_1: | |
1952 | case scm_tc7_subr_1o: | |
1953 | RETURN (SCM_SUBRF (proc) (t.arg1)); | |
1954 | case scm_tc7_cxr: | |
1955 | #ifdef SCM_FLOATS | |
1956 | if (SCM_SUBRF (proc)) | |
1957 | { | |
1958 | if (SCM_INUMP (t.arg1)) | |
1959 | { | |
1960 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (t.arg1)), | |
1961 | 0.0)); | |
1962 | } | |
1963 | SCM_ASRTGO (SCM_NIMP (t.arg1), floerr); | |
1964 | if (SCM_REALP (t.arg1)) | |
1965 | { | |
1966 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (t.arg1)), 0.0)); | |
1967 | } | |
1968 | #ifdef SCM_BIGDIG | |
1969 | if (SCM_BIGP (t.arg1)) | |
1970 | { | |
1971 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (t.arg1)), 0.0)); | |
1972 | } | |
1973 | #endif | |
1974 | floerr: | |
1975 | scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
1976 | } | |
1977 | #endif | |
1978 | proc = (SCM) SCM_SNAME (proc); | |
1979 | { | |
1980 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
1981 | while ('c' != *--chrs) | |
1982 | { | |
1983 | SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1), | |
1984 | t.arg1, SCM_ARG1, SCM_CHARS (proc)); | |
1985 | t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1); | |
1986 | } | |
1987 | RETURN (t.arg1); | |
1988 | } | |
1989 | case scm_tc7_rpsubr: | |
1990 | RETURN (SCM_BOOL_T); | |
1991 | case scm_tc7_asubr: | |
1992 | RETURN (SCM_SUBRF (proc) (t.arg1, SCM_UNDEFINED)); | |
1993 | case scm_tc7_lsubr: | |
1994 | #ifdef DEVAL | |
6dbd0af5 | 1995 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
0f2d19dd JB |
1996 | #else |
1997 | RETURN (SCM_SUBRF (proc) (scm_cons (t.arg1, SCM_EOL))); | |
1998 | #endif | |
6dbd0af5 | 1999 | #ifdef CCLO |
0f2d19dd JB |
2000 | case scm_tc7_cclo: |
2001 | arg2 = t.arg1; | |
2002 | t.arg1 = proc; | |
2003 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 MD |
2004 | #ifdef DEVAL |
2005 | debug.info->a.args = scm_cons (t.arg1, debug.info->a.args); | |
2006 | debug.info->a.proc = proc; | |
2007 | #endif | |
0f2d19dd | 2008 | goto evap2; |
6dbd0af5 | 2009 | #endif |
0f2d19dd JB |
2010 | case scm_tcs_closures: |
2011 | x = SCM_CODE (proc); | |
2012 | #ifdef DEVAL | |
e2806c10 | 2013 | env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2014 | #else |
e2806c10 | 2015 | env = EXTEND_ENV (SCM_CAR (x), scm_cons (t.arg1, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd JB |
2016 | #endif |
2017 | goto cdrxbegin; | |
2018 | case scm_tc7_contin: | |
2019 | scm_call_continuation (proc, t.arg1); | |
2020 | case scm_tc7_subr_2: | |
2021 | case scm_tc7_subr_0: | |
2022 | case scm_tc7_subr_3: | |
2023 | case scm_tc7_lsubr_2: | |
2024 | goto wrongnumargs; | |
2025 | default: | |
2026 | goto badfun; | |
2027 | } | |
2028 | } | |
2029 | #ifdef CAUTIOUS | |
2030 | if (SCM_IMP (x)) | |
2031 | goto wrongnumargs; | |
2032 | #endif | |
2033 | { /* have two or more arguments */ | |
2034 | arg2 = EVALCAR (x, env); | |
6dbd0af5 MD |
2035 | #ifdef DEVAL |
2036 | debug.info->a.args = scm_cons2 (t.arg1, arg2, SCM_EOL); | |
2037 | #endif | |
0f2d19dd JB |
2038 | x = SCM_CDR (x); |
2039 | if (SCM_NULLP (x)) { | |
6dbd0af5 | 2040 | ENTER_APPLY; |
0f2d19dd JB |
2041 | #ifdef CCLO |
2042 | evap2: | |
2043 | #endif | |
6dbd0af5 MD |
2044 | switch (SCM_TYP7 (proc)) |
2045 | { /* have two arguments */ | |
2046 | case scm_tc7_subr_2: | |
2047 | case scm_tc7_subr_2o: | |
2048 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2049 | case scm_tc7_lsubr: | |
0f2d19dd | 2050 | #ifdef DEVAL |
6dbd0af5 MD |
2051 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) |
2052 | #else | |
2053 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, SCM_EOL))); | |
0f2d19dd | 2054 | #endif |
6dbd0af5 MD |
2055 | case scm_tc7_lsubr_2: |
2056 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_EOL)); | |
2057 | case scm_tc7_rpsubr: | |
2058 | case scm_tc7_asubr: | |
2059 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2)); | |
2060 | #ifdef CCLO | |
2061 | cclon: | |
2062 | case scm_tc7_cclo: | |
0f2d19dd | 2063 | #ifdef DEVAL |
6dbd0af5 MD |
2064 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2065 | scm_cons (debug.info->a.args, SCM_EOL))); | |
0f2d19dd | 2066 | #else |
6dbd0af5 MD |
2067 | RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc, |
2068 | scm_cons2 (t.arg1, arg2, | |
2069 | scm_cons (scm_eval_args (x, env), SCM_EOL)))); | |
0f2d19dd | 2070 | #endif |
6dbd0af5 MD |
2071 | /* case scm_tc7_cclo: |
2072 | x = scm_cons(arg2, scm_eval_args(x, env)); | |
2073 | arg2 = t.arg1; | |
2074 | t.arg1 = proc; | |
2075 | proc = SCM_CCLO_SUBR(proc); | |
2076 | goto evap3; */ | |
2077 | #endif | |
2078 | case scm_tc7_subr_0: | |
2079 | case scm_tc7_cxr: | |
2080 | case scm_tc7_subr_1o: | |
2081 | case scm_tc7_subr_1: | |
2082 | case scm_tc7_subr_3: | |
2083 | case scm_tc7_contin: | |
2084 | goto wrongnumargs; | |
2085 | default: | |
2086 | goto badfun; | |
2087 | case scm_tcs_closures: | |
0f2d19dd | 2088 | #ifdef DEVAL |
e2806c10 | 2089 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), debug.info->a.args, SCM_ENV (proc)); |
0f2d19dd | 2090 | #else |
e2806c10 | 2091 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), scm_cons2 (t.arg1, arg2, SCM_EOL), SCM_ENV (proc)); |
0f2d19dd | 2092 | #endif |
6dbd0af5 MD |
2093 | x = SCM_CODE (proc); |
2094 | goto cdrxbegin; | |
2095 | } | |
0f2d19dd JB |
2096 | } |
2097 | #ifdef DEVAL | |
6dbd0af5 | 2098 | debug.info->a.args = scm_cons2 (t.arg1, arg2, |
a23afe53 | 2099 | scm_deval_args (x, env, SCM_CDRLOC (SCM_CDR (debug.info->a.args)))); |
0f2d19dd | 2100 | #endif |
6dbd0af5 MD |
2101 | ENTER_APPLY; |
2102 | switch (SCM_TYP7 (proc)) | |
2103 | { /* have 3 or more arguments */ | |
0f2d19dd | 2104 | #ifdef DEVAL |
6dbd0af5 MD |
2105 | case scm_tc7_subr_3: |
2106 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2107 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CAR (SCM_CDR (SCM_CDR (debug.info->a.args))))); | |
2108 | case scm_tc7_asubr: | |
2109 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2110 | while SCM_NIMP(x) { | |
2111 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2112 | x = SCM_CDR(x); | |
2113 | } | |
2114 | RETURN (t.arg1) */ | |
2115 | case scm_tc7_rpsubr: | |
2116 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, SCM_CDR (SCM_CDR (debug.info->a.args)), SCM_EOL))) | |
2117 | case scm_tc7_lsubr_2: | |
2118 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, SCM_CDR (SCM_CDR (debug.info->a.args)))) | |
2119 | case scm_tc7_lsubr: | |
2120 | RETURN (SCM_SUBRF (proc) (debug.info->a.args)) | |
0f2d19dd | 2121 | #ifdef CCLO |
6dbd0af5 MD |
2122 | case scm_tc7_cclo: |
2123 | goto cclon; | |
0f2d19dd | 2124 | #endif |
6dbd0af5 | 2125 | case scm_tcs_closures: |
b7ff98dd | 2126 | SCM_SET_ARGSREADY (debug); |
e2806c10 | 2127 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2128 | debug.info->a.args, |
2129 | SCM_ENV (proc)); | |
2130 | x = SCM_CODE (proc); | |
2131 | goto cdrxbegin; | |
2132 | #else /* DEVAL */ | |
2133 | case scm_tc7_subr_3: | |
2134 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (x)), wrongnumargs); | |
2135 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, EVALCAR (x, env))); | |
2136 | case scm_tc7_asubr: | |
2137 | /* t.arg1 = SCM_SUBRF(proc)(t.arg1, arg2); | |
2138 | while SCM_NIMP(x) { | |
2139 | t.arg1 = SCM_SUBRF(proc)(t.arg1, EVALCAR(x, env)); | |
2140 | x = SCM_CDR(x); | |
2141 | } | |
2142 | RETURN (t.arg1) */ | |
2143 | case scm_tc7_rpsubr: | |
2144 | RETURN (SCM_APPLY (proc, t.arg1, scm_acons (arg2, scm_eval_args (x, env), SCM_EOL))); | |
2145 | case scm_tc7_lsubr_2: | |
2146 | RETURN (SCM_SUBRF (proc) (t.arg1, arg2, scm_eval_args (x, env))); | |
2147 | case scm_tc7_lsubr: | |
2148 | RETURN (SCM_SUBRF (proc) (scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)))); | |
0f2d19dd | 2149 | #ifdef CCLO |
6dbd0af5 MD |
2150 | case scm_tc7_cclo: |
2151 | goto cclon; | |
0f2d19dd | 2152 | #endif |
6dbd0af5 MD |
2153 | case scm_tcs_closures: |
2154 | #ifdef DEVAL | |
b7ff98dd | 2155 | SCM_SET_ARGSREADY (debug); |
6dbd0af5 | 2156 | #endif |
e2806c10 | 2157 | env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), |
6dbd0af5 MD |
2158 | scm_cons2 (t.arg1, arg2, scm_eval_args (x, env)), |
2159 | SCM_ENV (proc)); | |
2160 | x = SCM_CODE (proc); | |
2161 | goto cdrxbegin; | |
0f2d19dd | 2162 | #endif /* DEVAL */ |
6dbd0af5 MD |
2163 | case scm_tc7_subr_2: |
2164 | case scm_tc7_subr_1o: | |
2165 | case scm_tc7_subr_2o: | |
2166 | case scm_tc7_subr_0: | |
2167 | case scm_tc7_cxr: | |
2168 | case scm_tc7_subr_1: | |
2169 | case scm_tc7_contin: | |
2170 | goto wrongnumargs; | |
2171 | default: | |
2172 | goto badfun; | |
2173 | } | |
0f2d19dd JB |
2174 | } |
2175 | #ifdef DEVAL | |
6dbd0af5 MD |
2176 | exit: |
2177 | if (CHECK_EXIT) | |
b7ff98dd | 2178 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2179 | { |
b7ff98dd MD |
2180 | SCM_EXIT_FRAME_P = 0; |
2181 | SCM_RESET_DEBUG_MODE; | |
2182 | SCM_CLEAR_TRACED_FRAME (debug); | |
2183 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2184 | t.arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2185 | else |
2186 | { | |
2187 | scm_make_cont (&t.arg1); | |
2188 | if (setjmp (SCM_JMPBUF (t.arg1))) | |
2189 | { | |
2190 | proc = SCM_THROW_VALUE (t.arg1); | |
2191 | goto ret; | |
2192 | } | |
2193 | } | |
2194 | scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0); | |
2195 | } | |
2196 | ret: | |
1646d37b | 2197 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2198 | return proc; |
2199 | #endif | |
2200 | } | |
2201 | ||
6dbd0af5 MD |
2202 | |
2203 | /* SECTION: This code is compiled once. | |
2204 | */ | |
2205 | ||
0f2d19dd JB |
2206 | #ifndef DEVAL |
2207 | ||
2208 | SCM_PROC(s_procedure_documentation, "procedure-documentation", 1, 0, 0, scm_procedure_documentation); | |
1cc91f1b | 2209 | |
0f2d19dd JB |
2210 | SCM |
2211 | scm_procedure_documentation (proc) | |
2212 | SCM proc; | |
0f2d19dd JB |
2213 | { |
2214 | SCM code; | |
2215 | SCM_ASSERT (SCM_BOOL_T == scm_procedure_p (proc) && SCM_NIMP (proc) && SCM_TYP7 (proc) != scm_tc7_contin, | |
2216 | proc, SCM_ARG1, s_procedure_documentation); | |
2217 | switch (SCM_TYP7 (proc)) | |
2218 | { | |
2219 | case scm_tcs_closures: | |
2220 | code = SCM_CDR (SCM_CODE (proc)); | |
2221 | if (SCM_IMP (SCM_CDR (code))) | |
2222 | return SCM_BOOL_F; | |
2223 | code = SCM_CAR (code); | |
2224 | if (SCM_IMP (code)) | |
2225 | return SCM_BOOL_F; | |
2226 | if (SCM_STRINGP (code)) | |
2227 | return code; | |
2228 | default: | |
2229 | return SCM_BOOL_F; | |
2230 | /* | |
2231 | case scm_tcs_subrs: | |
2232 | #ifdef CCLO | |
2233 | case scm_tc7_cclo: | |
2234 | #endif | |
2235 | */ | |
2236 | } | |
2237 | } | |
2238 | ||
b145c172 JB |
2239 | /* This code processes the 'arg ...' parameters to apply. |
2240 | ||
2241 | (apply PROC ARG1 ... ARGS) | |
2242 | ||
2243 | The ARG1 ... arguments are consed on to the front of ARGS (which | |
2244 | must be a list), and then PROC is applied to the elements of the | |
2245 | result. apply:nconc2last takes care of building the list of | |
2246 | arguments, given (ARG1 ... ARGS). | |
2247 | ||
2248 | apply:nconc2last destroys its argument. On that topic, this code | |
2249 | came into my care with the following beautifully cryptic comment on | |
2250 | that topic: "This will only screw you if you do (scm_apply | |
2251 | scm_apply '( ... ))" If you know what they're referring to, send | |
2252 | me a patch to this comment. */ | |
2253 | ||
0f2d19dd | 2254 | SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last); |
1cc91f1b | 2255 | |
0f2d19dd JB |
2256 | SCM |
2257 | scm_nconc2last (lst) | |
2258 | SCM lst; | |
0f2d19dd JB |
2259 | { |
2260 | SCM *lloc; | |
b145c172 | 2261 | SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2262 | lloc = &lst; |
2263 | while (SCM_NNULLP (SCM_CDR (*lloc))) | |
a23afe53 | 2264 | lloc = SCM_CDRLOC (*lloc); |
b145c172 | 2265 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last); |
0f2d19dd JB |
2266 | *lloc = SCM_CAR (*lloc); |
2267 | return lst; | |
2268 | } | |
2269 | ||
2270 | #endif /* !DEVAL */ | |
2271 | ||
6dbd0af5 MD |
2272 | |
2273 | /* SECTION: When DEVAL is defined this code yields scm_dapply. | |
2274 | * It is compiled twice. | |
2275 | */ | |
2276 | ||
0f2d19dd | 2277 | #if 0 |
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 | #endif | |
2286 | ||
2287 | #if 0 | |
1cc91f1b | 2288 | |
0f2d19dd JB |
2289 | SCM |
2290 | scm_dapply (proc, arg1, args) | |
2291 | SCM proc; | |
2292 | SCM arg1; | |
2293 | SCM args; | |
0f2d19dd JB |
2294 | {} |
2295 | #endif | |
2296 | ||
1cc91f1b | 2297 | |
0f2d19dd JB |
2298 | SCM |
2299 | SCM_APPLY (proc, arg1, args) | |
2300 | SCM proc; | |
2301 | SCM arg1; | |
2302 | SCM args; | |
0f2d19dd JB |
2303 | { |
2304 | #ifdef DEBUG_EXTENSIONS | |
2305 | #ifdef DEVAL | |
6dbd0af5 | 2306 | scm_debug_frame debug; |
c0ab1b8d | 2307 | scm_debug_info debug_vect_body; |
1646d37b | 2308 | debug.prev = scm_last_debug_frame; |
b7ff98dd | 2309 | debug.status = SCM_APPLYFRAME; |
c0ab1b8d | 2310 | debug.vect = &debug_vect_body; |
6dbd0af5 MD |
2311 | debug.vect[0].a.proc = proc; |
2312 | debug.vect[0].a.args = SCM_EOL; | |
1646d37b | 2313 | scm_last_debug_frame = &debug; |
0f2d19dd | 2314 | #else |
b7ff98dd | 2315 | if (SCM_DEBUGGINGP) |
0f2d19dd JB |
2316 | return scm_dapply (proc, arg1, args); |
2317 | #endif | |
2318 | #endif | |
2319 | ||
2320 | SCM_ASRTGO (SCM_NIMP (proc), badproc); | |
2321 | if (SCM_NULLP (args)) | |
2322 | { | |
2323 | if (SCM_NULLP (arg1)) | |
2324 | arg1 = SCM_UNDEFINED; | |
2325 | else | |
2326 | { | |
2327 | args = SCM_CDR (arg1); | |
2328 | arg1 = SCM_CAR (arg1); | |
2329 | } | |
2330 | } | |
2331 | else | |
2332 | { | |
2333 | /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */ | |
2334 | args = scm_nconc2last (args); | |
2335 | } | |
0f2d19dd | 2336 | #ifdef DEVAL |
6dbd0af5 | 2337 | debug.vect[0].a.args = scm_cons (arg1, args); |
b7ff98dd | 2338 | if (SCM_ENTER_FRAME_P) |
6dbd0af5 MD |
2339 | { |
2340 | SCM tmp; | |
b7ff98dd MD |
2341 | SCM_ENTER_FRAME_P = 0; |
2342 | SCM_RESET_DEBUG_MODE; | |
2343 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2344 | tmp = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2345 | else |
2346 | { | |
2347 | scm_make_cont (&tmp); | |
2348 | if (setjmp (SCM_JMPBUF (tmp))) | |
2349 | goto entap; | |
2350 | } | |
2351 | scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0); | |
2352 | } | |
2353 | entap: | |
2354 | ENTER_APPLY; | |
2355 | #endif | |
2356 | #ifdef CCLO | |
2357 | tail: | |
0f2d19dd JB |
2358 | #endif |
2359 | switch (SCM_TYP7 (proc)) | |
2360 | { | |
2361 | case scm_tc7_subr_2o: | |
2362 | args = SCM_NULLP (args) ? SCM_UNDEFINED : SCM_CAR (args); | |
2363 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2364 | case scm_tc7_subr_2: | |
2365 | SCM_ASRTGO (SCM_NULLP (SCM_CDR (args)), wrongnumargs); | |
2366 | args = SCM_CAR (args); | |
2367 | RETURN (SCM_SUBRF (proc) (arg1, args)) | |
2368 | case scm_tc7_subr_0: | |
2369 | SCM_ASRTGO (SCM_UNBNDP (arg1), wrongnumargs); | |
2370 | RETURN (SCM_SUBRF (proc) ()) | |
2371 | case scm_tc7_subr_1: | |
2372 | case scm_tc7_subr_1o: | |
2373 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2374 | RETURN (SCM_SUBRF (proc) (arg1)) | |
2375 | case scm_tc7_cxr: | |
2376 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2377 | #ifdef SCM_FLOATS | |
2378 | if (SCM_SUBRF (proc)) | |
2379 | { | |
6dbd0af5 MD |
2380 | if (SCM_INUMP (arg1)) |
2381 | { | |
2382 | RETURN (scm_makdbl (SCM_DSUBRF (proc) ((double) SCM_INUM (arg1)), 0.0)); | |
2383 | } | |
0f2d19dd | 2384 | SCM_ASRTGO (SCM_NIMP (arg1), floerr); |
6dbd0af5 MD |
2385 | if (SCM_REALP (arg1)) |
2386 | { | |
2387 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0)); | |
2388 | } | |
0f2d19dd JB |
2389 | #ifdef SCM_BIGDIG |
2390 | if SCM_BIGP | |
2391 | (arg1) | |
2392 | RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0)) | |
2393 | #endif | |
2394 | floerr: | |
2395 | scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc))); | |
2396 | } | |
2397 | #endif | |
2398 | proc = (SCM) SCM_SNAME (proc); | |
2399 | { | |
2400 | char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1; | |
2401 | while ('c' != *--chrs) | |
2402 | { | |
2403 | SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1), | |
2404 | arg1, SCM_ARG1, SCM_CHARS (proc)); | |
2405 | arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1); | |
2406 | } | |
2407 | RETURN (arg1) | |
2408 | } | |
2409 | case scm_tc7_subr_3: | |
2410 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CAR (SCM_CDR (args)))) | |
2411 | case scm_tc7_lsubr: | |
2412 | #ifdef DEVAL | |
6dbd0af5 | 2413 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args)) |
0f2d19dd JB |
2414 | #else |
2415 | RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args))) | |
2416 | #endif | |
2417 | case scm_tc7_lsubr_2: | |
2418 | SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs); | |
2419 | RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args))) | |
2420 | case scm_tc7_asubr: | |
2421 | if (SCM_NULLP (args)) | |
2422 | RETURN (SCM_SUBRF (proc) (arg1, SCM_UNDEFINED)) | |
2423 | while (SCM_NIMP (args)) | |
2424 | { | |
2425 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2426 | arg1 = SCM_SUBRF (proc) (arg1, SCM_CAR (args)); | |
2427 | args = SCM_CDR (args); | |
2428 | } | |
2429 | RETURN (arg1); | |
2430 | case scm_tc7_rpsubr: | |
2431 | if (SCM_NULLP (args)) | |
2432 | RETURN (SCM_BOOL_T); | |
2433 | while (SCM_NIMP (args)) | |
2434 | { | |
2435 | SCM_ASSERT (SCM_CONSP (args), args, SCM_ARG2, "apply"); | |
2436 | if (SCM_FALSEP (SCM_SUBRF (proc) (arg1, SCM_CAR (args)))) | |
2437 | RETURN (SCM_BOOL_F); | |
2438 | arg1 = SCM_CAR (args); | |
2439 | args = SCM_CDR (args); | |
2440 | } | |
2441 | RETURN (SCM_BOOL_T); | |
2442 | case scm_tcs_closures: | |
2443 | #ifdef DEVAL | |
6dbd0af5 | 2444 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : debug.vect[0].a.args); |
0f2d19dd JB |
2445 | #else |
2446 | arg1 = (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
2447 | #endif | |
2448 | #ifndef RECKLESS | |
2449 | if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), arg1)) | |
2450 | goto wrongnumargs; | |
2451 | #endif | |
e2806c10 | 2452 | args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), arg1, SCM_ENV (proc)); |
0f2d19dd JB |
2453 | proc = SCM_CODE (proc); |
2454 | while (SCM_NNULLP (proc = SCM_CDR (proc))) | |
2455 | arg1 = EVALCAR (proc, args); | |
2456 | RETURN (arg1); | |
2457 | case scm_tc7_contin: | |
2458 | SCM_ASRTGO (SCM_NULLP (args), wrongnumargs); | |
2459 | scm_call_continuation (proc, arg1); | |
2460 | #ifdef CCLO | |
2461 | case scm_tc7_cclo: | |
2462 | #ifdef DEVAL | |
6dbd0af5 MD |
2463 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args); |
2464 | arg1 = proc; | |
2465 | proc = SCM_CCLO_SUBR (proc); | |
2466 | debug.vect[0].a.proc = proc; | |
2467 | debug.vect[0].a.args = scm_cons (arg1, args); | |
0f2d19dd JB |
2468 | #else |
2469 | args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args)); | |
0f2d19dd JB |
2470 | arg1 = proc; |
2471 | proc = SCM_CCLO_SUBR (proc); | |
6dbd0af5 | 2472 | #endif |
0f2d19dd JB |
2473 | goto tail; |
2474 | #endif | |
2475 | wrongnumargs: | |
f5bf2977 | 2476 | scm_wrong_num_args (proc); |
0f2d19dd JB |
2477 | default: |
2478 | badproc: | |
2479 | scm_wta (proc, (char *) SCM_ARG1, "apply"); | |
2480 | RETURN (arg1); | |
2481 | } | |
2482 | #ifdef DEVAL | |
6dbd0af5 MD |
2483 | exit: |
2484 | if (CHECK_EXIT) | |
b7ff98dd | 2485 | if (SCM_EXIT_FRAME_P || (SCM_TRACE_P && SCM_TRACED_FRAME_P (debug))) |
6dbd0af5 | 2486 | { |
b7ff98dd MD |
2487 | SCM_EXIT_FRAME_P = 0; |
2488 | SCM_RESET_DEBUG_MODE; | |
2489 | SCM_CLEAR_TRACED_FRAME (debug); | |
2490 | if (SCM_CHEAPTRAPS_P) | |
c0ab1b8d | 2491 | arg1 = scm_make_debugobj (&debug); |
6dbd0af5 MD |
2492 | else |
2493 | { | |
2494 | scm_make_cont (&arg1); | |
2495 | if (setjmp (SCM_JMPBUF (arg1))) | |
2496 | { | |
2497 | proc = SCM_THROW_VALUE (arg1); | |
2498 | goto ret; | |
2499 | } | |
2500 | } | |
2501 | scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0); | |
2502 | } | |
2503 | ret: | |
1646d37b | 2504 | scm_last_debug_frame = debug.prev; |
0f2d19dd JB |
2505 | return proc; |
2506 | #endif | |
2507 | } | |
2508 | ||
6dbd0af5 MD |
2509 | |
2510 | /* SECTION: The rest of this file is only read once. | |
2511 | */ | |
2512 | ||
0f2d19dd JB |
2513 | #ifndef DEVAL |
2514 | ||
2515 | SCM_PROC(s_map, "map", 2, 0, 1, scm_map); | |
1cc91f1b | 2516 | |
0f2d19dd JB |
2517 | SCM |
2518 | scm_map (proc, arg1, args) | |
2519 | SCM proc; | |
2520 | SCM arg1; | |
2521 | SCM args; | |
0f2d19dd JB |
2522 | { |
2523 | long i; | |
2524 | SCM res = SCM_EOL; | |
2525 | SCM *pres = &res; | |
2526 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2527 | ||
2528 | if (SCM_NULLP (arg1)) | |
2529 | return res; | |
2530 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map); | |
2531 | if (SCM_NULLP (args)) | |
2532 | { | |
2533 | while (SCM_NIMP (arg1)) | |
2534 | { | |
2535 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map); | |
2536 | *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL); | |
a23afe53 | 2537 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
2538 | arg1 = SCM_CDR (arg1); |
2539 | } | |
2540 | return res; | |
2541 | } | |
2542 | args = scm_vector (scm_cons (arg1, args)); | |
2543 | ve = SCM_VELTS (args); | |
2544 | #ifndef RECKLESS | |
2545 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2546 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map); | |
2547 | #endif | |
2548 | while (1) | |
2549 | { | |
2550 | arg1 = SCM_EOL; | |
2551 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2552 | { | |
2553 | if SCM_IMP | |
2554 | (ve[i]) return res; | |
2555 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2556 | ve[i] = SCM_CDR (ve[i]); | |
2557 | } | |
2558 | *pres = scm_cons (scm_apply (proc, arg1, SCM_EOL), SCM_EOL); | |
a23afe53 | 2559 | pres = SCM_CDRLOC (*pres); |
0f2d19dd JB |
2560 | } |
2561 | } | |
2562 | ||
2563 | ||
2564 | SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each); | |
1cc91f1b | 2565 | |
0f2d19dd JB |
2566 | SCM |
2567 | scm_for_each (proc, arg1, args) | |
2568 | SCM proc; | |
2569 | SCM arg1; | |
2570 | SCM args; | |
0f2d19dd JB |
2571 | { |
2572 | SCM *ve = &args; /* Keep args from being optimized away. */ | |
2573 | long i; | |
2574 | if SCM_NULLP (arg1) | |
2575 | return SCM_UNSPECIFIED; | |
2576 | SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each); | |
2577 | if SCM_NULLP (args) | |
2578 | { | |
2579 | while SCM_NIMP (arg1) | |
2580 | { | |
2581 | SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each); | |
2582 | scm_apply (proc, SCM_CAR (arg1), scm_listofnull); | |
2583 | arg1 = SCM_CDR (arg1); | |
2584 | } | |
2585 | return SCM_UNSPECIFIED; | |
2586 | } | |
2587 | args = scm_vector (scm_cons (arg1, args)); | |
2588 | ve = SCM_VELTS (args); | |
2589 | #ifndef RECKLESS | |
2590 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2591 | SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each); | |
2592 | #endif | |
2593 | while (1) | |
2594 | { | |
2595 | arg1 = SCM_EOL; | |
2596 | for (i = SCM_LENGTH (args) - 1; i >= 0; i--) | |
2597 | { | |
2598 | if SCM_IMP | |
2599 | (ve[i]) return SCM_UNSPECIFIED; | |
2600 | arg1 = scm_cons (SCM_CAR (ve[i]), arg1); | |
2601 | ve[i] = SCM_CDR (ve[i]); | |
2602 | } | |
2603 | scm_apply (proc, arg1, SCM_EOL); | |
2604 | } | |
2605 | } | |
2606 | ||
2607 | ||
1cc91f1b | 2608 | |
0f2d19dd JB |
2609 | SCM |
2610 | scm_closure (code, env) | |
2611 | SCM code; | |
2612 | SCM env; | |
0f2d19dd JB |
2613 | { |
2614 | register SCM z; | |
2615 | SCM_NEWCELL (z); | |
2616 | SCM_SETCODE (z, code); | |
a23afe53 | 2617 | SCM_SETENV (z, env); |
0f2d19dd JB |
2618 | return z; |
2619 | } | |
2620 | ||
2621 | ||
2622 | long scm_tc16_promise; | |
1cc91f1b | 2623 | |
0f2d19dd JB |
2624 | SCM |
2625 | scm_makprom (code) | |
2626 | SCM code; | |
0f2d19dd JB |
2627 | { |
2628 | register SCM z; | |
2629 | SCM_NEWCELL (z); | |
a23afe53 MD |
2630 | SCM_SETCDR (z, code); |
2631 | SCM_SETCAR (z, scm_tc16_promise); | |
0f2d19dd JB |
2632 | return z; |
2633 | } | |
2634 | ||
2635 | ||
1cc91f1b JB |
2636 | |
2637 | static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
2638 | ||
0f2d19dd | 2639 | static int |
19402679 | 2640 | prinprom (exp, port, pstate) |
0f2d19dd JB |
2641 | SCM exp; |
2642 | SCM port; | |
19402679 | 2643 | scm_print_state *pstate; |
0f2d19dd | 2644 | { |
19402679 | 2645 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd | 2646 | scm_gen_puts (scm_regular_string, "#<promise ", port); |
19402679 MD |
2647 | SCM_SET_WRITINGP (pstate, 1); |
2648 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2649 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2650 | scm_gen_putc ('>', port); |
2651 | return !0; | |
2652 | } | |
2653 | ||
2654 | ||
2655 | SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro); | |
1cc91f1b | 2656 | |
0f2d19dd JB |
2657 | SCM |
2658 | scm_makacro (code) | |
2659 | SCM code; | |
0f2d19dd JB |
2660 | { |
2661 | register SCM z; | |
2662 | SCM_NEWCELL (z); | |
a23afe53 MD |
2663 | SCM_SETCDR (z, code); |
2664 | SCM_SETCAR (z, scm_tc16_macro); | |
0f2d19dd JB |
2665 | return z; |
2666 | } | |
2667 | ||
2668 | ||
2669 | SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro); | |
1cc91f1b | 2670 | |
0f2d19dd JB |
2671 | SCM |
2672 | scm_makmacro (code) | |
2673 | SCM code; | |
0f2d19dd JB |
2674 | { |
2675 | register SCM z; | |
2676 | SCM_NEWCELL (z); | |
a23afe53 MD |
2677 | SCM_SETCDR (z, code); |
2678 | SCM_SETCAR (z, scm_tc16_macro | (1L << 16)); | |
0f2d19dd JB |
2679 | return z; |
2680 | } | |
2681 | ||
2682 | ||
2683 | SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro); | |
1cc91f1b | 2684 | |
0f2d19dd JB |
2685 | SCM |
2686 | scm_makmmacro (code) | |
2687 | SCM code; | |
0f2d19dd JB |
2688 | { |
2689 | register SCM z; | |
2690 | SCM_NEWCELL (z); | |
a23afe53 MD |
2691 | SCM_SETCDR (z, code); |
2692 | SCM_SETCAR (z, scm_tc16_macro | (2L << 16)); | |
0f2d19dd JB |
2693 | return z; |
2694 | } | |
2695 | ||
2696 | ||
1cc91f1b JB |
2697 | |
2698 | static int prinmacro SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
2699 | ||
0f2d19dd | 2700 | static int |
19402679 | 2701 | prinmacro (exp, port, pstate) |
0f2d19dd JB |
2702 | SCM exp; |
2703 | SCM port; | |
19402679 | 2704 | scm_print_state *pstate; |
0f2d19dd | 2705 | { |
19402679 | 2706 | int writingp = SCM_WRITINGP (pstate); |
0f2d19dd JB |
2707 | if (SCM_CAR (exp) & (3L << 16)) |
2708 | scm_gen_puts (scm_regular_string, "#<macro", port); | |
2709 | else | |
2710 | scm_gen_puts (scm_regular_string, "#<syntax", port); | |
2711 | if (SCM_CAR (exp) & (2L << 16)) | |
2712 | scm_gen_putc ('!', port); | |
2713 | scm_gen_putc (' ', port); | |
19402679 MD |
2714 | SCM_SET_WRITINGP (pstate, 1); |
2715 | scm_iprin1 (SCM_CDR (exp), port, pstate); | |
2716 | SCM_SET_WRITINGP (pstate, writingp); | |
0f2d19dd JB |
2717 | scm_gen_putc ('>', port); |
2718 | return !0; | |
2719 | } | |
2720 | ||
2721 | SCM_PROC(s_force, "force", 1, 0, 0, scm_force); | |
1cc91f1b | 2722 | |
0f2d19dd JB |
2723 | SCM |
2724 | scm_force (x) | |
2725 | SCM x; | |
0f2d19dd JB |
2726 | { |
2727 | SCM_ASSERT ((SCM_TYP16 (x) == scm_tc16_promise), x, SCM_ARG1, s_force); | |
2728 | if (!((1L << 16) & SCM_CAR (x))) | |
2729 | { | |
2730 | SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL); | |
2731 | if (!((1L << 16) & SCM_CAR (x))) | |
2732 | { | |
2733 | SCM_DEFER_INTS; | |
a23afe53 MD |
2734 | SCM_SETCDR (x, ans); |
2735 | SCM_SETOR_CAR (x, (1L << 16)); | |
0f2d19dd JB |
2736 | SCM_ALLOW_INTS; |
2737 | } | |
2738 | } | |
2739 | return SCM_CDR (x); | |
2740 | } | |
2741 | ||
2742 | SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p); | |
1cc91f1b | 2743 | |
0f2d19dd JB |
2744 | SCM |
2745 | scm_promise_p (x) | |
2746 | SCM x; | |
0f2d19dd JB |
2747 | { |
2748 | return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise)) | |
2749 | ? SCM_BOOL_T | |
2750 | : SCM_BOOL_F); | |
2751 | } | |
2752 | ||
2753 | SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree); | |
1cc91f1b | 2754 | |
0f2d19dd JB |
2755 | SCM |
2756 | scm_copy_tree (obj) | |
2757 | SCM obj; | |
0f2d19dd JB |
2758 | { |
2759 | SCM ans, tl; | |
2760 | if SCM_IMP | |
2761 | (obj) return obj; | |
2762 | if (SCM_VECTORP (obj)) | |
2763 | { | |
2764 | scm_sizet i = SCM_LENGTH (obj); | |
2765 | ans = scm_make_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED, SCM_UNDEFINED); | |
2766 | while (i--) | |
2767 | SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]); | |
2768 | return ans; | |
2769 | } | |
2770 | if SCM_NCONSP (obj) | |
2771 | return obj; | |
2772 | /* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */ | |
2773 | ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED); | |
2774 | while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj)) | |
a23afe53 MD |
2775 | { |
2776 | SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)), | |
2777 | SCM_UNSPECIFIED)); | |
2778 | tl = SCM_CDR (tl); | |
2779 | } | |
2780 | SCM_SETCDR (tl, obj); | |
0f2d19dd JB |
2781 | return ans; |
2782 | } | |
2783 | ||
1cc91f1b | 2784 | |
0f2d19dd JB |
2785 | SCM |
2786 | scm_eval_3 (obj, copyp, env) | |
2787 | SCM obj; | |
2788 | int copyp; | |
2789 | SCM env; | |
0f2d19dd JB |
2790 | { |
2791 | if (SCM_NIMP (SCM_CDR (scm_system_transformer))) | |
2792 | obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull); | |
2793 | else if (copyp) | |
2794 | obj = scm_copy_tree (obj); | |
6dbd0af5 | 2795 | return XEVAL (obj, env); |
0f2d19dd JB |
2796 | } |
2797 | ||
1cc91f1b | 2798 | |
0f2d19dd JB |
2799 | SCM |
2800 | scm_top_level_env (thunk) | |
2801 | SCM thunk; | |
0f2d19dd JB |
2802 | { |
2803 | if (SCM_IMP(thunk)) | |
2804 | return SCM_EOL; | |
2805 | else | |
2806 | return scm_cons(thunk, (SCM)SCM_EOL); | |
2807 | } | |
2808 | ||
2809 | SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2); | |
1cc91f1b | 2810 | |
0f2d19dd JB |
2811 | SCM |
2812 | scm_eval2 (obj, env_thunk) | |
2813 | SCM obj; | |
2814 | SCM env_thunk; | |
0f2d19dd JB |
2815 | { |
2816 | return scm_eval_3 (obj, 1, scm_top_level_env(env_thunk)); | |
2817 | } | |
2818 | ||
2819 | SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval); | |
1cc91f1b | 2820 | |
0f2d19dd JB |
2821 | SCM |
2822 | scm_eval (obj) | |
2823 | SCM obj; | |
0f2d19dd JB |
2824 | { |
2825 | return | |
dc19d1d2 | 2826 | scm_eval_3(obj, 1, scm_top_level_env(SCM_CDR(scm_top_level_lookup_closure_var))); |
0f2d19dd JB |
2827 | } |
2828 | ||
11f77bfc | 2829 | /* SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); */ |
1cc91f1b | 2830 | |
0f2d19dd JB |
2831 | SCM |
2832 | scm_eval_x (obj) | |
2833 | SCM obj; | |
0f2d19dd JB |
2834 | { |
2835 | return | |
2836 | scm_eval_3(obj, | |
2837 | 0, | |
dc19d1d2 | 2838 | scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var))); |
0f2d19dd JB |
2839 | } |
2840 | ||
2841 | SCM_PROC (s_macro_eval_x, "macro-eval!", 2, 0, 0, scm_macro_eval_x); | |
1cc91f1b | 2842 | |
0f2d19dd JB |
2843 | SCM |
2844 | scm_macro_eval_x (exp, env) | |
2845 | SCM exp; | |
2846 | SCM env; | |
0f2d19dd JB |
2847 | { |
2848 | return scm_eval_3 (exp, 0, env); | |
2849 | } | |
2850 | ||
1cc91f1b | 2851 | |
ee33f8fa MV |
2852 | SCM_PROC (s_definedp, "defined?", 1, 0, 0, scm_definedp); |
2853 | ||
0f2d19dd | 2854 | SCM |
ee33f8fa MV |
2855 | scm_definedp (sym) |
2856 | SCM sym; | |
0f2d19dd | 2857 | { |
ee33f8fa MV |
2858 | SCM vcell; |
2859 | ||
2860 | if (SCM_ISYMP (sym)) | |
0f2d19dd | 2861 | return SCM_BOOL_T; |
ee33f8fa MV |
2862 | |
2863 | SCM_ASSERT (SCM_NIMP (sym) && SCM_SYMBOLP (sym), sym, SCM_ARG1, s_definedp); | |
2864 | ||
2865 | vcell = scm_sym2vcell(sym, | |
0aa1e432 | 2866 | SCM_CDR (scm_top_level_lookup_closure_var), |
ee33f8fa MV |
2867 | SCM_BOOL_F); |
2868 | return (vcell == SCM_BOOL_F || SCM_UNBNDP(SCM_CDR(vcell))) ? | |
2869 | SCM_BOOL_F : SCM_BOOL_T; | |
0f2d19dd JB |
2870 | } |
2871 | ||
2872 | static scm_smobfuns promsmob = | |
2873 | {scm_markcdr, scm_free0, prinprom}; | |
2874 | ||
2875 | static scm_smobfuns macrosmob = | |
2876 | {scm_markcdr, scm_free0, prinmacro}; | |
2877 | ||
1cc91f1b | 2878 | |
0f2d19dd JB |
2879 | SCM |
2880 | scm_make_synt (name, macroizer, fcn) | |
2881 | char *name; | |
2882 | SCM (*macroizer) (); | |
2883 | SCM (*fcn) (); | |
0f2d19dd JB |
2884 | { |
2885 | SCM symcell = scm_sysintern (name, SCM_UNDEFINED); | |
2886 | long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); | |
2887 | register SCM z; | |
2888 | if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) | |
2889 | tmp = 0; | |
2890 | SCM_NEWCELL (z); | |
2891 | SCM_SUBRF (z) = fcn; | |
a23afe53 MD |
2892 | SCM_SETCAR (z, tmp + scm_tc7_subr_2); |
2893 | SCM_SETCDR (symcell, macroizer (z)); | |
0f2d19dd JB |
2894 | return SCM_CAR (symcell); |
2895 | } | |
2896 | ||
6dbd0af5 MD |
2897 | |
2898 | /* At this point, scm_deval and scm_dapply are generated. | |
2899 | */ | |
2900 | ||
0f2d19dd | 2901 | #ifdef DEBUG_EXTENSIONS |
6dbd0af5 MD |
2902 | # define DEVAL |
2903 | # include "eval.c" | |
0f2d19dd JB |
2904 | #endif |
2905 | ||
2906 | ||
1cc91f1b | 2907 | |
0f2d19dd JB |
2908 | void |
2909 | scm_init_eval () | |
0f2d19dd | 2910 | { |
0f2d19dd JB |
2911 | scm_tc16_promise = scm_newsmob (&promsmob); |
2912 | scm_tc16_macro = scm_newsmob (¯osmob); | |
2913 | scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply); | |
2914 | scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED); | |
2915 | scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED)); | |
2916 | scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED)); | |
2917 | scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED)); | |
2918 | scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED)); | |
2919 | scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED)); | |
2920 | ||
2921 | /* acros */ | |
2922 | scm_i_quasiquote = scm_make_synt (s_quasiquote, scm_makacro, scm_m_quasiquote); | |
6dbd0af5 | 2923 | scm_make_synt (s_undefine, scm_makacro, scm_m_undefine); |
0f2d19dd JB |
2924 | scm_make_synt (s_delay, scm_makacro, scm_m_delay); |
2925 | /* end of acros */ | |
2926 | ||
dc19d1d2 JB |
2927 | scm_top_level_lookup_closure_var = |
2928 | scm_sysintern("*top-level-lookup-closure*", SCM_BOOL_F); | |
9b8d3288 | 2929 | scm_can_use_top_level_lookup_closure_var = 1; |
0f2d19dd | 2930 | |
6dbd0af5 MD |
2931 | scm_i_and = scm_make_synt ("and", scm_makmmacro, scm_m_and); |
2932 | scm_i_begin = scm_make_synt ("begin", scm_makmmacro, scm_m_begin); | |
2933 | scm_i_case = scm_make_synt ("case", scm_makmmacro, scm_m_case); | |
2934 | scm_i_cond = scm_make_synt ("cond", scm_makmmacro, scm_m_cond); | |
2935 | scm_i_define = scm_make_synt ("define", scm_makmmacro, scm_m_define); | |
2936 | scm_i_do = scm_make_synt ("do", scm_makmmacro, scm_m_do); | |
2937 | scm_i_if = scm_make_synt ("if", scm_makmmacro, scm_m_if); | |
0f2d19dd JB |
2938 | scm_i_lambda = scm_make_synt ("lambda", scm_makmmacro, scm_m_lambda); |
2939 | scm_i_let = scm_make_synt ("let", scm_makmmacro, scm_m_let); | |
6dbd0af5 MD |
2940 | scm_i_letrec = scm_make_synt ("letrec", scm_makmmacro, scm_m_letrec); |
2941 | scm_i_letstar = scm_make_synt ("let*", scm_makmmacro, scm_m_letstar); | |
2942 | scm_i_or = scm_make_synt ("or", scm_makmmacro, scm_m_or); | |
0f2d19dd | 2943 | scm_i_quote = scm_make_synt ("quote", scm_makmmacro, scm_m_quote); |
6dbd0af5 MD |
2944 | scm_i_set = scm_make_synt ("set!", scm_makmmacro, scm_m_set); |
2945 | scm_i_atapply = scm_make_synt ("@apply", scm_makmmacro, scm_m_apply); | |
2946 | scm_i_atcall_cc = scm_make_synt ("@call-with-current-continuation", | |
2947 | scm_makmmacro, scm_m_cont); | |
2948 | ||
6dbd0af5 MD |
2949 | #ifdef DEBUG_EXTENSIONS |
2950 | scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED)); | |
2951 | scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED)); | |
2952 | scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED)); | |
2953 | scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED)); | |
2954 | #endif | |
2955 | ||
0f2d19dd JB |
2956 | #include "eval.x" |
2957 | } | |
0f2d19dd | 2958 | |
6dbd0af5 | 2959 | #endif /* !DEVAL */ |