Commit | Line | Data |
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997659f8 | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010 |
434f2f7a | 2 | * Free Software Foundation, Inc. |
0f2d19dd | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
0f2d19dd | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
0f2d19dd | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
0f2d19dd JB |
20 | \f |
21 | ||
dbb605f5 | 22 | #ifdef HAVE_CONFIG_H |
3d05f2e0 RB |
23 | # include <config.h> |
24 | #endif | |
0f2d19dd | 25 | |
f7439099 | 26 | #include <alloca.h> |
3d05f2e0 | 27 | |
f7439099 | 28 | #include "libguile/__scm.h" |
48b96f4b | 29 | |
a0599745 | 30 | #include "libguile/_scm.h" |
21628685 DH |
31 | #include "libguile/alist.h" |
32 | #include "libguile/async.h" | |
33 | #include "libguile/continuations.h" | |
a0599745 | 34 | #include "libguile/debug.h" |
328dc9a3 | 35 | #include "libguile/deprecation.h" |
09074dbf | 36 | #include "libguile/dynwind.h" |
a0599745 | 37 | #include "libguile/eq.h" |
21628685 DH |
38 | #include "libguile/feature.h" |
39 | #include "libguile/fluids.h" | |
21628685 DH |
40 | #include "libguile/goops.h" |
41 | #include "libguile/hash.h" | |
42 | #include "libguile/hashtab.h" | |
43 | #include "libguile/lang.h" | |
4610b011 | 44 | #include "libguile/list.h" |
a0599745 | 45 | #include "libguile/macros.h" |
b7742c6b | 46 | #include "libguile/memoize.h" |
a0599745 MD |
47 | #include "libguile/modules.h" |
48 | #include "libguile/ports.h" | |
7e6e6b37 | 49 | #include "libguile/print.h" |
21628685 | 50 | #include "libguile/procprop.h" |
4abef68f | 51 | #include "libguile/programs.h" |
a0599745 | 52 | #include "libguile/root.h" |
21628685 DH |
53 | #include "libguile/smob.h" |
54 | #include "libguile/srcprop.h" | |
55 | #include "libguile/stackchk.h" | |
56 | #include "libguile/strings.h" | |
9de87eea | 57 | #include "libguile/threads.h" |
21628685 DH |
58 | #include "libguile/throw.h" |
59 | #include "libguile/validate.h" | |
a513ead3 | 60 | #include "libguile/values.h" |
21628685 | 61 | #include "libguile/vectors.h" |
4abef68f | 62 | #include "libguile/vm.h" |
a0599745 | 63 | |
a0599745 | 64 | #include "libguile/eval.h" |
0ee05b85 | 65 | #include "libguile/private-options.h" |
89efbff4 | 66 | |
0f2d19dd JB |
67 | \f |
68 | ||
0ee05b85 | 69 | |
b7742c6b | 70 | /* We have three levels of EVAL here: |
609a8b86 | 71 | |
b7742c6b | 72 | - eval (exp, env) |
89bff2fc | 73 | |
b7742c6b AW |
74 | evaluates EXP in environment ENV. ENV is a lexical environment |
75 | structure as used by the actual tree code evaluator. When ENV is | |
76 | a top-level environment, then changes to the current module are | |
77 | tracked by updating ENV so that it continues to be in sync with | |
78 | the current module. | |
e6729603 | 79 | |
b7742c6b | 80 | - scm_primitive_eval (exp) |
e6729603 | 81 | |
b7742c6b AW |
82 | evaluates EXP in the top-level environment as determined by the |
83 | current module. This is done by constructing a suitable | |
84 | environment and calling eval. Thus, changes to the | |
85 | top-level module are tracked normally. | |
e6729603 | 86 | |
b7742c6b | 87 | - scm_eval (exp, mod) |
e6729603 | 88 | |
b7742c6b AW |
89 | evaluates EXP while MOD is the current module. This is done |
90 | by setting the current module to MOD_OR_STATE, invoking | |
91 | scm_primitive_eval on EXP, and then restoring the current module | |
92 | to the value it had previously. That is, while EXP is evaluated, | |
93 | changes to the current module (or dynamic state) are tracked, | |
94 | but these changes do not persist when scm_eval returns. | |
e6729603 | 95 | |
b7742c6b | 96 | */ |
e6729603 | 97 | |
e6729603 | 98 | |
314b8716 AW |
99 | /* Boot closures. We only see these when compiling eval.scm, because once |
100 | eval.scm is in the house, closures are standard VM closures. | |
101 | */ | |
102 | ||
103 | static scm_t_bits scm_tc16_boot_closure; | |
104 | #define RETURN_BOOT_CLOSURE(code, env) SCM_RETURN_NEWSMOB2 (scm_tc16_boot_closure, (code), (env)) | |
105 | #define BOOT_CLOSURE_P(obj) SCM_TYP16_PREDICATE (scm_tc16_boot_closure, (obj)) | |
106 | #define BOOT_CLOSURE_CODE(x) SCM_SMOB_OBJECT (x) | |
107 | #define BOOT_CLOSURE_ENV(x) SCM_SMOB_OBJECT_2 (x) | |
108 | #define BOOT_CLOSURE_NUM_REQUIRED_ARGS(x) SCM_I_INUM (CAR (BOOT_CLOSURE_CODE (x))) | |
109 | #define BOOT_CLOSURE_HAS_REST_ARGS(x) scm_is_true (CADR (BOOT_CLOSURE_CODE (x))) | |
110 | #define BOOT_CLOSURE_BODY(x) CDDR (BOOT_CLOSURE_CODE (x)) | |
111 | ||
112 | ||
113 | ||
b7742c6b AW |
114 | #if 0 |
115 | #define CAR(x) SCM_CAR(x) | |
116 | #define CDR(x) SCM_CDR(x) | |
117 | #define CAAR(x) SCM_CAAR(x) | |
118 | #define CADR(x) SCM_CADR(x) | |
119 | #define CDAR(x) SCM_CDAR(x) | |
120 | #define CDDR(x) SCM_CDDR(x) | |
121 | #define CADDR(x) SCM_CADDR(x) | |
122 | #define CDDDR(x) SCM_CDDDR(x) | |
123 | #else | |
124 | #define CAR(x) scm_car(x) | |
125 | #define CDR(x) scm_cdr(x) | |
126 | #define CAAR(x) scm_caar(x) | |
127 | #define CADR(x) scm_cadr(x) | |
128 | #define CDAR(x) scm_cdar(x) | |
129 | #define CDDR(x) scm_cddr(x) | |
130 | #define CADDR(x) scm_caddr(x) | |
131 | #define CDDDR(x) scm_cdddr(x) | |
132 | #endif | |
e6729603 DH |
133 | |
134 | ||
b7742c6b | 135 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
e6729603 | 136 | |
b7742c6b | 137 | static void error_used_before_defined (void) |
d0624e39 | 138 | { |
b7742c6b AW |
139 | scm_error (scm_unbound_variable_key, NULL, |
140 | "Variable used before given a value", SCM_EOL, SCM_BOOL_F); | |
d0624e39 | 141 | } |
d0624e39 | 142 | |
b7742c6b AW |
143 | int |
144 | scm_badargsp (SCM formals, SCM args) | |
7e6e6b37 | 145 | { |
b7742c6b AW |
146 | while (!scm_is_null (formals)) |
147 | { | |
148 | if (!scm_is_pair (formals)) | |
149 | return 0; | |
150 | if (scm_is_null (args)) | |
151 | return 1; | |
152 | formals = CDR (formals); | |
153 | args = CDR (args); | |
154 | } | |
155 | return !scm_is_null (args) ? 1 : 0; | |
7e6e6b37 DH |
156 | } |
157 | ||
b7742c6b | 158 | /* the environment: |
3149a5b6 | 159 | (VAL ... . MOD) |
b7742c6b AW |
160 | If MOD is #f, it means the environment was captured before modules were |
161 | booted. | |
162 | If MOD is the literal value '(), we are evaluating at the top level, and so | |
163 | should track changes to the current module. You have to be careful in this | |
164 | case, because further lexical contours should capture the current module. | |
165 | */ | |
166 | #define CAPTURE_ENV(env) \ | |
167 | ((env == SCM_EOL) ? scm_current_module () : \ | |
168 | ((env == SCM_BOOL_F) ? scm_the_root_module () : env)) | |
6f81708a DH |
169 | |
170 | static SCM | |
b7742c6b | 171 | eval (SCM x, SCM env) |
6f81708a | 172 | { |
b7742c6b AW |
173 | SCM mx; |
174 | SCM proc = SCM_UNDEFINED, args = SCM_EOL; | |
6f81708a | 175 | |
b7742c6b AW |
176 | loop: |
177 | SCM_TICK; | |
178 | if (!SCM_MEMOIZED_P (x)) | |
179 | abort (); | |
180 | ||
181 | mx = SCM_MEMOIZED_ARGS (x); | |
182 | switch (SCM_MEMOIZED_TAG (x)) | |
183 | { | |
184 | case SCM_M_BEGIN: | |
185 | for (; !scm_is_null (CDR (mx)); mx = CDR (mx)) | |
186 | eval (CAR (mx), env); | |
187 | x = CAR (mx); | |
188 | goto loop; | |
189 | ||
190 | case SCM_M_IF: | |
191 | if (scm_is_true (eval (CAR (mx), env))) | |
192 | x = CADR (mx); | |
6f81708a | 193 | else |
b7742c6b AW |
194 | x = CDDR (mx); |
195 | goto loop; | |
5fb64383 | 196 | |
b7742c6b AW |
197 | case SCM_M_LET: |
198 | { | |
199 | SCM inits = CAR (mx); | |
200 | SCM new_env = CAPTURE_ENV (env); | |
201 | for (; scm_is_pair (inits); inits = CDR (inits)) | |
202 | new_env = scm_cons (eval (CAR (inits), env), new_env); | |
203 | env = new_env; | |
204 | x = CDR (mx); | |
205 | goto loop; | |
206 | } | |
207 | ||
208 | case SCM_M_LAMBDA: | |
314b8716 | 209 | RETURN_BOOT_CLOSURE (mx, CAPTURE_ENV (env)); |
5fb64383 | 210 | |
b7742c6b AW |
211 | case SCM_M_QUOTE: |
212 | return mx; | |
0f2d19dd | 213 | |
b7742c6b AW |
214 | case SCM_M_DEFINE: |
215 | scm_define (CAR (mx), eval (CDR (mx), env)); | |
216 | return SCM_UNSPECIFIED; | |
212e58ed | 217 | |
d69531e2 AW |
218 | case SCM_M_DYNWIND: |
219 | { | |
220 | SCM in, out, res, old_winds; | |
221 | in = eval (CAR (mx), env); | |
222 | out = eval (CDDR (mx), env); | |
223 | scm_call_0 (in); | |
224 | old_winds = scm_i_dynwinds (); | |
225 | scm_i_set_dynwinds (scm_acons (in, out, old_winds)); | |
226 | res = eval (CADR (mx), env); | |
227 | scm_i_set_dynwinds (old_winds); | |
228 | scm_call_0 (out); | |
229 | return res; | |
230 | } | |
231 | ||
bb0229b5 AW |
232 | case SCM_M_WITH_FLUIDS: |
233 | { | |
234 | long i, len; | |
235 | SCM *fluidv, *valuesv, walk, wf, res; | |
236 | len = scm_ilength (CAR (mx)); | |
237 | fluidv = alloca (sizeof (SCM)*len); | |
238 | for (i = 0, walk = CAR (mx); i < len; i++, walk = CDR (walk)) | |
239 | fluidv[i] = eval (CAR (walk), env); | |
240 | valuesv = alloca (sizeof (SCM)*len); | |
241 | for (i = 0, walk = CADR (mx); i < len; i++, walk = CDR (walk)) | |
242 | valuesv[i] = eval (CAR (walk), env); | |
243 | ||
244 | wf = scm_i_make_with_fluids (len, fluidv, valuesv); | |
245 | scm_i_swap_with_fluids (wf, SCM_I_CURRENT_THREAD->dynamic_state); | |
246 | scm_i_set_dynwinds (scm_cons (wf, scm_i_dynwinds ())); | |
247 | res = eval (CDDR (mx), env); | |
248 | scm_i_swap_with_fluids (wf, SCM_I_CURRENT_THREAD->dynamic_state); | |
249 | scm_i_set_dynwinds (CDR (scm_i_dynwinds ())); | |
250 | ||
251 | return res; | |
252 | } | |
253 | ||
b7742c6b AW |
254 | case SCM_M_APPLY: |
255 | /* Evaluate the procedure to be applied. */ | |
256 | proc = eval (CAR (mx), env); | |
257 | /* Evaluate the argument holding the list of arguments */ | |
258 | args = eval (CADR (mx), env); | |
259 | ||
260 | apply_proc: | |
261 | /* Go here to tail-apply a procedure. PROC is the procedure and | |
262 | * ARGS is the list of arguments. */ | |
314b8716 | 263 | if (BOOT_CLOSURE_P (proc)) |
b7742c6b | 264 | { |
314b8716 AW |
265 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (proc); |
266 | SCM new_env = BOOT_CLOSURE_ENV (proc); | |
267 | if (BOOT_CLOSURE_HAS_REST_ARGS (proc)) | |
b7742c6b AW |
268 | { |
269 | if (SCM_UNLIKELY (scm_ilength (args) < nreq)) | |
270 | scm_wrong_num_args (proc); | |
271 | for (; nreq; nreq--, args = CDR (args)) | |
272 | new_env = scm_cons (CAR (args), new_env); | |
273 | new_env = scm_cons (args, new_env); | |
274 | } | |
275 | else | |
276 | { | |
277 | if (SCM_UNLIKELY (scm_ilength (args) != nreq)) | |
278 | scm_wrong_num_args (proc); | |
279 | for (; scm_is_pair (args); args = CDR (args)) | |
280 | new_env = scm_cons (CAR (args), new_env); | |
281 | } | |
314b8716 | 282 | x = BOOT_CLOSURE_BODY (proc); |
b7742c6b AW |
283 | env = new_env; |
284 | goto loop; | |
285 | } | |
286 | else | |
67e2d80a | 287 | return scm_vm_apply (scm_the_vm (), proc, args); |
212e58ed | 288 | |
b7742c6b AW |
289 | case SCM_M_CALL: |
290 | /* Evaluate the procedure to be applied. */ | |
291 | proc = eval (CAR (mx), env); | |
9331f91c AW |
292 | /* int nargs = CADR (mx); */ |
293 | mx = CDDR (mx); | |
212e58ed | 294 | |
314b8716 | 295 | if (BOOT_CLOSURE_P (proc)) |
5fa0939c | 296 | { |
314b8716 AW |
297 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (proc); |
298 | SCM new_env = BOOT_CLOSURE_ENV (proc); | |
299 | if (BOOT_CLOSURE_HAS_REST_ARGS (proc)) | |
b7742c6b AW |
300 | { |
301 | if (SCM_UNLIKELY (scm_ilength (mx) < nreq)) | |
302 | scm_wrong_num_args (proc); | |
303 | for (; nreq; nreq--, mx = CDR (mx)) | |
304 | new_env = scm_cons (eval (CAR (mx), env), new_env); | |
305 | { | |
306 | SCM rest = SCM_EOL; | |
307 | for (; scm_is_pair (mx); mx = CDR (mx)) | |
308 | rest = scm_cons (eval (CAR (mx), env), rest); | |
309 | new_env = scm_cons (scm_reverse (rest), | |
310 | new_env); | |
311 | } | |
312 | } | |
313 | else | |
314 | { | |
315 | for (; scm_is_pair (mx); mx = CDR (mx), nreq--) | |
316 | new_env = scm_cons (eval (CAR (mx), env), new_env); | |
317 | if (SCM_UNLIKELY (nreq != 0)) | |
318 | scm_wrong_num_args (proc); | |
319 | } | |
314b8716 | 320 | x = BOOT_CLOSURE_BODY (proc); |
b7742c6b AW |
321 | env = new_env; |
322 | goto loop; | |
5fa0939c | 323 | } |
b7742c6b AW |
324 | else |
325 | { | |
326 | SCM rest = SCM_EOL; | |
9331f91c | 327 | /* FIXME: use alloca */ |
b7742c6b AW |
328 | for (; scm_is_pair (mx); mx = CDR (mx)) |
329 | rest = scm_cons (eval (CAR (mx), env), rest); | |
67e2d80a | 330 | return scm_vm_apply (scm_the_vm (), proc, scm_reverse (rest)); |
b7742c6b AW |
331 | } |
332 | ||
333 | case SCM_M_CONT: | |
babfc7b2 | 334 | return scm_i_call_with_current_continuation (eval (mx, env)); |
212e58ed | 335 | |
b7742c6b AW |
336 | case SCM_M_CALL_WITH_VALUES: |
337 | { | |
338 | SCM producer; | |
339 | SCM v; | |
340 | ||
341 | producer = eval (CAR (mx), env); | |
342 | proc = eval (CDR (mx), env); /* proc is the consumer. */ | |
67e2d80a | 343 | v = scm_vm_apply (scm_the_vm (), producer, SCM_EOL); |
b7742c6b AW |
344 | if (SCM_VALUESP (v)) |
345 | args = scm_struct_ref (v, SCM_INUM0); | |
346 | else | |
347 | args = scm_list_1 (v); | |
348 | goto apply_proc; | |
349 | } | |
26d5b9b4 | 350 | |
b7742c6b AW |
351 | case SCM_M_LEXICAL_REF: |
352 | { | |
353 | int n; | |
354 | SCM ret; | |
355 | for (n = SCM_I_INUM (mx); n; n--) | |
356 | env = CDR (env); | |
357 | ret = CAR (env); | |
358 | if (SCM_UNLIKELY (SCM_UNBNDP (ret))) | |
359 | /* we don't know what variable, though, because we don't have its | |
360 | name */ | |
361 | error_used_before_defined (); | |
362 | return ret; | |
363 | } | |
1cc91f1b | 364 | |
b7742c6b AW |
365 | case SCM_M_LEXICAL_SET: |
366 | { | |
367 | int n; | |
368 | SCM val = eval (CDR (mx), env); | |
369 | for (n = SCM_I_INUM (CAR (mx)); n; n--) | |
370 | env = CDR (env); | |
371 | SCM_SETCAR (env, val); | |
372 | return SCM_UNSPECIFIED; | |
373 | } | |
910b5125 | 374 | |
b7742c6b AW |
375 | case SCM_M_TOPLEVEL_REF: |
376 | if (SCM_VARIABLEP (mx)) | |
377 | return SCM_VARIABLE_REF (mx); | |
378 | else | |
57d23e25 | 379 | { |
b7742c6b | 380 | while (scm_is_pair (env)) |
f3a8d1b7 | 381 | env = CDR (env); |
3149a5b6 AW |
382 | return SCM_VARIABLE_REF |
383 | (scm_memoize_variable_access_x (x, CAPTURE_ENV (env))); | |
57d23e25 | 384 | } |
57d23e25 | 385 | |
b7742c6b AW |
386 | case SCM_M_TOPLEVEL_SET: |
387 | { | |
388 | SCM var = CAR (mx); | |
389 | SCM val = eval (CDR (mx), env); | |
390 | if (SCM_VARIABLEP (var)) | |
391 | { | |
392 | SCM_VARIABLE_SET (var, val); | |
393 | return SCM_UNSPECIFIED; | |
394 | } | |
395 | else | |
396 | { | |
397 | while (scm_is_pair (env)) | |
f3a8d1b7 | 398 | env = CDR (env); |
3149a5b6 AW |
399 | SCM_VARIABLE_SET |
400 | (scm_memoize_variable_access_x (x, CAPTURE_ENV (env)), | |
401 | val); | |
b7742c6b AW |
402 | return SCM_UNSPECIFIED; |
403 | } | |
404 | } | |
910b5125 | 405 | |
b7742c6b AW |
406 | case SCM_M_MODULE_REF: |
407 | if (SCM_VARIABLEP (mx)) | |
408 | return SCM_VARIABLE_REF (mx); | |
910b5125 | 409 | else |
3149a5b6 AW |
410 | return SCM_VARIABLE_REF |
411 | (scm_memoize_variable_access_x (x, SCM_BOOL_F)); | |
910b5125 | 412 | |
b7742c6b AW |
413 | case SCM_M_MODULE_SET: |
414 | if (SCM_VARIABLEP (CDR (mx))) | |
910b5125 | 415 | { |
b7742c6b AW |
416 | SCM_VARIABLE_SET (CDR (mx), eval (CAR (mx), env)); |
417 | return SCM_UNSPECIFIED; | |
418 | } | |
419 | else | |
420 | { | |
3149a5b6 AW |
421 | SCM_VARIABLE_SET |
422 | (scm_memoize_variable_access_x (x, SCM_BOOL_F), | |
423 | eval (CAR (mx), env)); | |
b7742c6b | 424 | return SCM_UNSPECIFIED; |
910b5125 | 425 | } |
910b5125 | 426 | |
b7742c6b AW |
427 | default: |
428 | abort (); | |
429 | } | |
910b5125 DH |
430 | } |
431 | ||
b7742c6b AW |
432 | scm_t_option scm_eval_opts[] = { |
433 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." }, | |
434 | { 0 } | |
435 | }; | |
e6729603 | 436 | |
b7742c6b AW |
437 | scm_t_option scm_debug_opts[] = { |
438 | { SCM_OPTION_BOOLEAN, "cheap", 1, | |
439 | "*This option is now obsolete. Setting it has no effect." }, | |
440 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
441 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
442 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
443 | "Record procedure names at definition." }, | |
444 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
445 | "Display backtrace in anti-chronological order." }, | |
446 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, | |
447 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, | |
448 | { SCM_OPTION_INTEGER, "frames", 3, | |
449 | "Maximum number of tail-recursive frames in backtrace." }, | |
450 | { SCM_OPTION_INTEGER, "maxdepth", 1000, | |
451 | "Maximal number of stored backtrace frames." }, | |
452 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
453 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, | |
454 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
455 | /* This default stack limit will be overridden by debug.c:init_stack_limit(), | |
456 | if we have getrlimit() and the stack limit is not INFINITY. But it is still | |
457 | important, as some systems have both the soft and the hard limits set to | |
458 | INFINITY; in that case we fall back to this value. | |
e6729603 | 459 | |
b7742c6b AW |
460 | The situation is aggravated by certain compilers, which can consume |
461 | "beaucoup de stack", as they say in France. | |
0f2d19dd | 462 | |
b7742c6b AW |
463 | See http://thread.gmane.org/gmane.lisp.guile.devel/8599/focus=8662 for |
464 | more discussion. This setting is 640 KB on 32-bit arches (should be enough | |
465 | for anyone!) or a whoppin' 1280 KB on 64-bit arches. | |
466 | */ | |
467 | { SCM_OPTION_INTEGER, "stack", 160000, "Stack size limit (measured in words; 0 = no check)." }, | |
468 | { SCM_OPTION_SCM, "show-file-name", (unsigned long)SCM_BOOL_T, | |
469 | "Show file names and line numbers " | |
470 | "in backtraces when not `#f'. A value of `base' " | |
471 | "displays only base names, while `#t' displays full names."}, | |
472 | { SCM_OPTION_BOOLEAN, "warn-deprecated", 0, | |
473 | "Warn when deprecated features are used." }, | |
474 | { 0 }, | |
475 | }; | |
212e58ed | 476 | |
1cc91f1b | 477 | |
b7742c6b AW |
478 | /* |
479 | * this ordering is awkward and illogical, but we maintain it for | |
480 | * compatibility. --hwn | |
481 | */ | |
482 | scm_t_option scm_evaluator_trap_table[] = { | |
483 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, | |
484 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, | |
485 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
486 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." }, | |
487 | { SCM_OPTION_SCM, "enter-frame-handler", (unsigned long)SCM_BOOL_F, "Handler for enter-frame traps." }, | |
488 | { SCM_OPTION_SCM, "apply-frame-handler", (unsigned long)SCM_BOOL_F, "Handler for apply-frame traps." }, | |
489 | { SCM_OPTION_SCM, "exit-frame-handler", (unsigned long)SCM_BOOL_F, "Handler for exit-frame traps." }, | |
490 | { SCM_OPTION_BOOLEAN, "memoize-symbol", 0, "Trap when memoizing a symbol." }, | |
491 | { SCM_OPTION_SCM, "memoize-symbol-handler", (unsigned long)SCM_BOOL_F, "The handler for memoization." }, | |
492 | { 0 } | |
493 | }; | |
8ea46249 | 494 | |
0f2d19dd | 495 | |
b7742c6b AW |
496 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
497 | (SCM setting), | |
498 | "Option interface for the evaluation options. Instead of using\n" | |
499 | "this procedure directly, use the procedures @code{eval-enable},\n" | |
500 | "@code{eval-disable}, @code{eval-set!} and @code{eval-options}.") | |
501 | #define FUNC_NAME s_scm_eval_options_interface | |
212e58ed | 502 | { |
b7742c6b AW |
503 | SCM ans; |
504 | ||
505 | scm_dynwind_begin (0); | |
506 | scm_dynwind_critical_section (SCM_BOOL_F); | |
507 | ans = scm_options (setting, | |
508 | scm_eval_opts, | |
509 | FUNC_NAME); | |
510 | scm_dynwind_end (); | |
212e58ed | 511 | |
b7742c6b AW |
512 | return ans; |
513 | } | |
514 | #undef FUNC_NAME | |
0f2d19dd | 515 | |
1cc91f1b | 516 | |
b7742c6b AW |
517 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
518 | (SCM setting), | |
519 | "Option interface for the evaluator trap options.") | |
520 | #define FUNC_NAME s_scm_evaluator_traps | |
0f2d19dd | 521 | { |
b7742c6b | 522 | SCM ans; |
2a6f7afe | 523 | |
b7742c6b AW |
524 | |
525 | scm_options_try (setting, | |
526 | scm_evaluator_trap_table, | |
527 | FUNC_NAME, 1); | |
528 | SCM_CRITICAL_SECTION_START; | |
529 | ans = scm_options (setting, | |
530 | scm_evaluator_trap_table, | |
531 | FUNC_NAME); | |
2a6f7afe | 532 | |
b7742c6b AW |
533 | /* njrev: same again. */ |
534 | SCM_CRITICAL_SECTION_END; | |
535 | return ans; | |
536 | } | |
537 | #undef FUNC_NAME | |
2a6f7afe | 538 | |
2a6f7afe | 539 | |
2a6f7afe | 540 | |
b7742c6b | 541 | \f |
2a6f7afe | 542 | |
b7742c6b AW |
543 | /* Simple procedure calls |
544 | */ | |
2a6f7afe | 545 | |
b7742c6b AW |
546 | SCM |
547 | scm_call_0 (SCM proc) | |
548 | { | |
bf5a05f2 | 549 | return scm_c_vm_run (scm_the_vm (), proc, NULL, 0); |
0f2d19dd JB |
550 | } |
551 | ||
b7742c6b AW |
552 | SCM |
553 | scm_call_1 (SCM proc, SCM arg1) | |
212e58ed | 554 | { |
bf5a05f2 | 555 | return scm_c_vm_run (scm_the_vm (), proc, &arg1, 1); |
b7742c6b | 556 | } |
212e58ed | 557 | |
b7742c6b AW |
558 | SCM |
559 | scm_call_2 (SCM proc, SCM arg1, SCM arg2) | |
560 | { | |
bf5a05f2 AW |
561 | SCM args[] = { arg1, arg2 }; |
562 | return scm_c_vm_run (scm_the_vm (), proc, args, 2); | |
212e58ed DH |
563 | } |
564 | ||
b7742c6b AW |
565 | SCM |
566 | scm_call_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3) | |
0f2d19dd | 567 | { |
bf5a05f2 AW |
568 | SCM args[] = { arg1, arg2, arg3 }; |
569 | return scm_c_vm_run (scm_the_vm (), proc, args, 3); | |
0f2d19dd JB |
570 | } |
571 | ||
b7742c6b AW |
572 | SCM |
573 | scm_call_4 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4) | |
212e58ed | 574 | { |
bf5a05f2 AW |
575 | SCM args[] = { arg1, arg2, arg3, arg4 }; |
576 | return scm_c_vm_run (scm_the_vm (), proc, args, 4); | |
212e58ed DH |
577 | } |
578 | ||
86fd6dff AW |
579 | SCM |
580 | scm_call_n (SCM proc, SCM *argv, size_t nargs) | |
581 | { | |
582 | return scm_c_vm_run (scm_the_vm (), proc, argv, nargs); | |
583 | } | |
584 | ||
b7742c6b | 585 | /* Simple procedure applies |
9fbee57e | 586 | */ |
cc56ba80 | 587 | |
b7742c6b AW |
588 | SCM |
589 | scm_apply_0 (SCM proc, SCM args) | |
590 | { | |
591 | return scm_apply (proc, args, SCM_EOL); | |
0f572ba7 DH |
592 | } |
593 | ||
b7742c6b AW |
594 | SCM |
595 | scm_apply_1 (SCM proc, SCM arg1, SCM args) | |
0f572ba7 | 596 | { |
b7742c6b | 597 | return scm_apply (proc, scm_cons (arg1, args), SCM_EOL); |
8ae95199 DH |
598 | } |
599 | ||
b7742c6b AW |
600 | SCM |
601 | scm_apply_2 (SCM proc, SCM arg1, SCM arg2, SCM args) | |
0f2d19dd | 602 | { |
b7742c6b | 603 | return scm_apply (proc, scm_cons2 (arg1, arg2, args), SCM_EOL); |
0f2d19dd JB |
604 | } |
605 | ||
b7742c6b AW |
606 | SCM |
607 | scm_apply_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM args) | |
212e58ed | 608 | { |
b7742c6b AW |
609 | return scm_apply (proc, scm_cons (arg1, scm_cons2 (arg2, arg3, args)), |
610 | SCM_EOL); | |
212e58ed DH |
611 | } |
612 | ||
b7742c6b | 613 | /* This code processes the arguments to apply: |
8ea46249 | 614 | |
b7742c6b | 615 | (apply PROC ARG1 ... ARGS) |
302c12b4 | 616 | |
b7742c6b AW |
617 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
618 | ... arguments onto the front of ARGS, and returns the resulting | |
619 | list. Note that ARGS is a list; thus, the argument to this | |
620 | function is a list whose last element is a list. | |
302c12b4 | 621 | |
b7742c6b AW |
622 | Apply calls this function, and applies PROC to the elements of the |
623 | result. apply:nconc2last takes care of building the list of | |
624 | arguments, given (ARG1 ... ARGS). | |
a954ce1d | 625 | |
b7742c6b AW |
626 | Rather than do new consing, apply:nconc2last destroys its argument. |
627 | On that topic, this code came into my care with the following | |
628 | beautifully cryptic comment on that topic: "This will only screw | |
629 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
630 | they're referring to, send me a patch to this comment. */ | |
0f2d19dd | 631 | |
b7742c6b AW |
632 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
633 | (SCM lst), | |
634 | "Given a list (@var{arg1} @dots{} @var{args}), this function\n" | |
635 | "conses the @var{arg1} @dots{} arguments onto the front of\n" | |
636 | "@var{args}, and returns the resulting list. Note that\n" | |
637 | "@var{args} is a list; thus, the argument to this function is\n" | |
638 | "a list whose last element is a list.\n" | |
639 | "Note: Rather than do new consing, @code{apply:nconc2last}\n" | |
640 | "destroys its argument, so use with care.") | |
641 | #define FUNC_NAME s_scm_nconc2last | |
212e58ed | 642 | { |
b7742c6b AW |
643 | SCM *lloc; |
644 | SCM_VALIDATE_NONEMPTYLIST (1, lst); | |
645 | lloc = &lst; | |
646 | while (!scm_is_null (SCM_CDR (*lloc))) /* Perhaps should be | |
647 | SCM_NULL_OR_NIL_P, but not | |
648 | needed in 99.99% of cases, | |
649 | and it could seriously hurt | |
650 | performance. - Neil */ | |
651 | lloc = SCM_CDRLOC (*lloc); | |
652 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); | |
653 | *lloc = SCM_CAR (*lloc); | |
654 | return lst; | |
212e58ed | 655 | } |
b7742c6b | 656 | #undef FUNC_NAME |
212e58ed | 657 | |
b8229a3b MS |
658 | |
659 | ||
b7742c6b | 660 | /* Typechecking for multi-argument MAP and FOR-EACH. |
0f2d19dd | 661 | |
b7742c6b AW |
662 | Verify that each element of the vector ARGV, except for the first, |
663 | is a proper list whose length is LEN. Attribute errors to WHO, | |
664 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ | |
665 | static inline void | |
666 | check_map_args (SCM argv, | |
667 | long len, | |
668 | SCM gf, | |
669 | SCM proc, | |
670 | SCM args, | |
671 | const char *who) | |
212e58ed | 672 | { |
b7742c6b | 673 | long i; |
0f2d19dd | 674 | |
b7742c6b | 675 | for (i = SCM_SIMPLE_VECTOR_LENGTH (argv) - 1; i >= 1; i--) |
9fbee57e | 676 | { |
b7742c6b AW |
677 | SCM elt = SCM_SIMPLE_VECTOR_REF (argv, i); |
678 | long elt_len = scm_ilength (elt); | |
5cb22e96 | 679 | |
b7742c6b AW |
680 | if (elt_len < 0) |
681 | { | |
682 | if (gf) | |
683 | scm_apply_generic (gf, scm_cons (proc, args)); | |
684 | else | |
685 | scm_wrong_type_arg (who, i + 2, elt); | |
686 | } | |
1cc91f1b | 687 | |
b7742c6b AW |
688 | if (elt_len != len) |
689 | scm_out_of_range_pos (who, elt, scm_from_long (i + 2)); | |
0f2d19dd | 690 | } |
0f2d19dd | 691 | } |
6dbd0af5 | 692 | |
212e58ed | 693 | |
b7742c6b | 694 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
212e58ed | 695 | |
b7742c6b AW |
696 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
697 | sequentially, starting with the first element(s). This is used in | |
698 | evalext.c where the Scheme procedure `map-in-order', which guarantees | |
699 | sequential behaviour, is implemented using scm_map. If the | |
700 | behaviour changes, we need to update `map-in-order'. | |
701 | */ | |
0f2d19dd | 702 | |
b7742c6b AW |
703 | SCM |
704 | scm_map (SCM proc, SCM arg1, SCM args) | |
705 | #define FUNC_NAME s_map | |
0f2d19dd | 706 | { |
b7742c6b AW |
707 | long i, len; |
708 | SCM res = SCM_EOL; | |
709 | SCM *pres = &res; | |
0f2d19dd | 710 | |
b7742c6b AW |
711 | len = scm_ilength (arg1); |
712 | SCM_GASSERTn (len >= 0, | |
713 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
714 | SCM_VALIDATE_REST_ARGUMENT (args); | |
715 | if (scm_is_null (args)) | |
0f2d19dd | 716 | { |
b7742c6b AW |
717 | SCM_GASSERT2 (scm_is_true (scm_procedure_p (proc)), g_map, proc, arg1, SCM_ARG1, s_map); |
718 | while (SCM_NIMP (arg1)) | |
719 | { | |
720 | *pres = scm_list_1 (scm_call_1 (proc, SCM_CAR (arg1))); | |
721 | pres = SCM_CDRLOC (*pres); | |
722 | arg1 = SCM_CDR (arg1); | |
723 | } | |
724 | return res; | |
0f2d19dd | 725 | } |
b7742c6b AW |
726 | if (scm_is_null (SCM_CDR (args))) |
727 | { | |
728 | SCM arg2 = SCM_CAR (args); | |
729 | int len2 = scm_ilength (arg2); | |
730 | SCM_GASSERTn (scm_is_true (scm_procedure_p (proc)), g_map, | |
731 | scm_cons2 (proc, arg1, args), SCM_ARG1, s_map); | |
732 | SCM_GASSERTn (len2 >= 0, | |
733 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG3, s_map); | |
734 | if (len2 != len) | |
735 | SCM_OUT_OF_RANGE (3, arg2); | |
736 | while (SCM_NIMP (arg1)) | |
737 | { | |
738 | *pres = scm_list_1 (scm_call_2 (proc, SCM_CAR (arg1), SCM_CAR (arg2))); | |
739 | pres = SCM_CDRLOC (*pres); | |
740 | arg1 = SCM_CDR (arg1); | |
741 | arg2 = SCM_CDR (arg2); | |
742 | } | |
743 | return res; | |
744 | } | |
745 | arg1 = scm_cons (arg1, args); | |
746 | args = scm_vector (arg1); | |
747 | check_map_args (args, len, g_map, proc, arg1, s_map); | |
748 | while (1) | |
d6754c23 | 749 | { |
b7742c6b AW |
750 | arg1 = SCM_EOL; |
751 | for (i = SCM_SIMPLE_VECTOR_LENGTH (args) - 1; i >= 0; i--) | |
752 | { | |
753 | SCM elt = SCM_SIMPLE_VECTOR_REF (args, i); | |
754 | if (SCM_IMP (elt)) | |
755 | return res; | |
756 | arg1 = scm_cons (SCM_CAR (elt), arg1); | |
757 | SCM_SIMPLE_VECTOR_SET (args, i, SCM_CDR (elt)); | |
758 | } | |
759 | *pres = scm_list_1 (scm_apply (proc, arg1, SCM_EOL)); | |
760 | pres = SCM_CDRLOC (*pres); | |
d6754c23 | 761 | } |
0f2d19dd | 762 | } |
b7742c6b | 763 | #undef FUNC_NAME |
0f2d19dd | 764 | |
302c12b4 | 765 | |
b7742c6b | 766 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
d6754c23 | 767 | |
b7742c6b AW |
768 | SCM |
769 | scm_for_each (SCM proc, SCM arg1, SCM args) | |
770 | #define FUNC_NAME s_for_each | |
0f2d19dd | 771 | { |
b7742c6b AW |
772 | long i, len; |
773 | len = scm_ilength (arg1); | |
774 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), | |
775 | SCM_ARG2, s_for_each); | |
776 | SCM_VALIDATE_REST_ARGUMENT (args); | |
777 | if (scm_is_null (args)) | |
26d5b9b4 | 778 | { |
b7742c6b AW |
779 | SCM_GASSERT2 (scm_is_true (scm_procedure_p (proc)), g_for_each, |
780 | proc, arg1, SCM_ARG1, s_for_each); | |
781 | while (SCM_NIMP (arg1)) | |
782 | { | |
783 | scm_call_1 (proc, SCM_CAR (arg1)); | |
784 | arg1 = SCM_CDR (arg1); | |
785 | } | |
786 | return SCM_UNSPECIFIED; | |
26d5b9b4 | 787 | } |
b7742c6b | 788 | if (scm_is_null (SCM_CDR (args))) |
26d5b9b4 | 789 | { |
b7742c6b AW |
790 | SCM arg2 = SCM_CAR (args); |
791 | int len2 = scm_ilength (arg2); | |
792 | SCM_GASSERTn (scm_is_true (scm_procedure_p (proc)), g_for_each, | |
793 | scm_cons2 (proc, arg1, args), SCM_ARG1, s_for_each); | |
794 | SCM_GASSERTn (len2 >= 0, g_for_each, | |
795 | scm_cons2 (proc, arg1, args), SCM_ARG3, s_for_each); | |
796 | if (len2 != len) | |
797 | SCM_OUT_OF_RANGE (3, arg2); | |
798 | while (SCM_NIMP (arg1)) | |
799 | { | |
800 | scm_call_2 (proc, SCM_CAR (arg1), SCM_CAR (arg2)); | |
801 | arg1 = SCM_CDR (arg1); | |
802 | arg2 = SCM_CDR (arg2); | |
803 | } | |
804 | return SCM_UNSPECIFIED; | |
26d5b9b4 | 805 | } |
b7742c6b AW |
806 | arg1 = scm_cons (arg1, args); |
807 | args = scm_vector (arg1); | |
808 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); | |
809 | while (1) | |
302c12b4 | 810 | { |
b7742c6b AW |
811 | arg1 = SCM_EOL; |
812 | for (i = SCM_SIMPLE_VECTOR_LENGTH (args) - 1; i >= 0; i--) | |
71560395 | 813 | { |
b7742c6b AW |
814 | SCM elt = SCM_SIMPLE_VECTOR_REF (args, i); |
815 | if (SCM_IMP (elt)) | |
816 | return SCM_UNSPECIFIED; | |
817 | arg1 = scm_cons (SCM_CAR (elt), arg1); | |
818 | SCM_SIMPLE_VECTOR_SET (args, i, SCM_CDR (elt)); | |
819 | } | |
820 | scm_apply (proc, arg1, SCM_EOL); | |
821 | } | |
822 | } | |
823 | #undef FUNC_NAME | |
71560395 | 824 | |
71560395 | 825 | |
5f161164 AW |
826 | static SCM |
827 | scm_c_primitive_eval (SCM exp) | |
b7742c6b AW |
828 | { |
829 | SCM transformer = scm_current_module_transformer (); | |
830 | if (scm_is_true (transformer)) | |
831 | exp = scm_call_1 (transformer, exp); | |
832 | exp = scm_memoize_expression (exp); | |
833 | return eval (exp, SCM_EOL); | |
834 | } | |
5f161164 AW |
835 | |
836 | static SCM var_primitive_eval; | |
837 | SCM | |
838 | scm_primitive_eval (SCM exp) | |
839 | { | |
840 | return scm_c_vm_run (scm_the_vm (), scm_variable_ref (var_primitive_eval), | |
841 | &exp, 1); | |
842 | } | |
71560395 | 843 | |
b7742c6b AW |
844 | |
845 | /* Eval does not take the second arg optionally. This is intentional | |
846 | * in order to be R5RS compatible, and to prepare for the new module | |
847 | * system, where we would like to make the choice of evaluation | |
848 | * environment explicit. */ | |
849 | ||
850 | SCM_DEFINE (scm_eval, "eval", 2, 0, 0, | |
851 | (SCM exp, SCM module_or_state), | |
852 | "Evaluate @var{exp}, a list representing a Scheme expression,\n" | |
853 | "in the top-level environment specified by\n" | |
854 | "@var{module_or_state}.\n" | |
855 | "While @var{exp} is evaluated (using @code{primitive-eval}),\n" | |
856 | "@var{module_or_state} is made the current module when\n" | |
857 | "it is a module, or the current dynamic state when it is\n" | |
858 | "a dynamic state." | |
859 | "Example: (eval '(+ 1 2) (interaction-environment))") | |
860 | #define FUNC_NAME s_scm_eval | |
861 | { | |
862 | SCM res; | |
863 | ||
864 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
865 | if (scm_is_dynamic_state (module_or_state)) | |
866 | scm_dynwind_current_dynamic_state (module_or_state); | |
867 | else if (scm_module_system_booted_p) | |
868 | { | |
869 | SCM_VALIDATE_MODULE (2, module_or_state); | |
870 | scm_dynwind_current_module (module_or_state); | |
71560395 | 871 | } |
b7742c6b | 872 | /* otherwise if the module system isn't booted, ignore the module arg */ |
71560395 | 873 | |
b7742c6b AW |
874 | res = scm_primitive_eval (exp); |
875 | ||
876 | scm_dynwind_end (); | |
877 | return res; | |
878 | } | |
879 | #undef FUNC_NAME | |
71560395 AW |
880 | |
881 | ||
b7742c6b | 882 | static SCM f_apply; |
71560395 AW |
883 | |
884 | /* Apply a function to a list of arguments. | |
885 | ||
886 | This function is exported to the Scheme level as taking two | |
887 | required arguments and a tail argument, as if it were: | |
888 | (lambda (proc arg1 . args) ...) | |
889 | Thus, if you just have a list of arguments to pass to a procedure, | |
890 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
891 | args, pass the first as ARG1, then cons any remaining fixed args | |
892 | onto the front of your argument list, and pass that as ARGS. */ | |
893 | ||
894 | SCM | |
895 | scm_apply (SCM proc, SCM arg1, SCM args) | |
896 | { | |
b7742c6b | 897 | /* Fix things up so that args contains all args. */ |
71560395 | 898 | if (scm_is_null (args)) |
b7742c6b | 899 | args = arg1; |
71560395 | 900 | else |
b7742c6b | 901 | args = scm_cons_star (arg1, args); |
71560395 | 902 | |
67e2d80a | 903 | return scm_vm_apply (scm_the_vm (), proc, args); |
b7742c6b | 904 | } |
434f2f7a DH |
905 | |
906 | ||
314b8716 AW |
907 | static SCM |
908 | boot_closure_apply (SCM closure, SCM args) | |
909 | { | |
910 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (closure); | |
911 | SCM new_env = BOOT_CLOSURE_ENV (closure); | |
912 | if (BOOT_CLOSURE_HAS_REST_ARGS (closure)) | |
913 | { | |
914 | if (SCM_UNLIKELY (scm_ilength (args) < nreq)) | |
915 | scm_wrong_num_args (closure); | |
916 | for (; nreq; nreq--, args = CDR (args)) | |
917 | new_env = scm_cons (CAR (args), new_env); | |
918 | new_env = scm_cons (args, new_env); | |
919 | } | |
920 | else | |
921 | { | |
922 | if (SCM_UNLIKELY (scm_ilength (args) != nreq)) | |
923 | scm_wrong_num_args (closure); | |
924 | for (; scm_is_pair (args); args = CDR (args)) | |
925 | new_env = scm_cons (CAR (args), new_env); | |
926 | } | |
927 | return eval (BOOT_CLOSURE_BODY (closure), new_env); | |
928 | } | |
929 | ||
930 | static int | |
931 | boot_closure_print (SCM closure, SCM port, scm_print_state *pstate) | |
932 | { | |
933 | SCM args; | |
934 | scm_puts ("#<boot-closure ", port); | |
935 | scm_uintprint ((unsigned long)SCM2PTR (closure), 16, port); | |
936 | scm_putc (' ', port); | |
937 | args = scm_make_list (scm_from_int (BOOT_CLOSURE_NUM_REQUIRED_ARGS (closure)), | |
938 | scm_from_locale_symbol ("_")); | |
939 | if (BOOT_CLOSURE_HAS_REST_ARGS (closure)) | |
940 | args = scm_cons_star (scm_from_locale_symbol ("_"), args); | |
941 | scm_display (args, port); | |
942 | scm_putc ('>', port); | |
943 | return 1; | |
944 | } | |
945 | ||
0f2d19dd JB |
946 | void |
947 | scm_init_eval () | |
0f2d19dd | 948 | { |
5f161164 AW |
949 | SCM primitive_eval; |
950 | ||
33b97402 | 951 | scm_init_opts (scm_evaluator_traps, |
62560650 | 952 | scm_evaluator_trap_table); |
33b97402 | 953 | scm_init_opts (scm_eval_options_interface, |
62560650 | 954 | scm_eval_opts); |
33b97402 | 955 | |
df9ca8d8 | 956 | f_apply = scm_c_define_gsubr ("apply", 2, 0, 1, scm_apply); |
86d31dfe | 957 | |
314b8716 AW |
958 | scm_tc16_boot_closure = scm_make_smob_type ("boot-closure", 0); |
959 | scm_set_smob_apply (scm_tc16_boot_closure, boot_closure_apply, 0, 0, 1); | |
960 | scm_set_smob_print (scm_tc16_boot_closure, boot_closure_print); | |
961 | ||
5f161164 AW |
962 | primitive_eval = scm_c_make_gsubr ("primitive-eval", 1, 0, 0, |
963 | scm_c_primitive_eval); | |
964 | var_primitive_eval = scm_define (SCM_SUBR_NAME (primitive_eval), | |
965 | primitive_eval); | |
966 | ||
a0599745 | 967 | #include "libguile/eval.x" |
0f2d19dd | 968 | } |
0f2d19dd | 969 | |
89e00824 ML |
970 | /* |
971 | Local Variables: | |
972 | c-file-style: "gnu" | |
973 | End: | |
974 | */ | |
62560650 | 975 |