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> |
b7ecadca | 27 | #include <assert.h> |
3d05f2e0 | 28 | |
f7439099 | 29 | #include "libguile/__scm.h" |
48b96f4b | 30 | |
a0599745 | 31 | #include "libguile/_scm.h" |
21628685 DH |
32 | #include "libguile/alist.h" |
33 | #include "libguile/async.h" | |
34 | #include "libguile/continuations.h" | |
747022e4 | 35 | #include "libguile/control.h" |
a0599745 | 36 | #include "libguile/debug.h" |
328dc9a3 | 37 | #include "libguile/deprecation.h" |
09074dbf | 38 | #include "libguile/dynwind.h" |
a0599745 | 39 | #include "libguile/eq.h" |
21628685 DH |
40 | #include "libguile/feature.h" |
41 | #include "libguile/fluids.h" | |
21628685 DH |
42 | #include "libguile/goops.h" |
43 | #include "libguile/hash.h" | |
44 | #include "libguile/hashtab.h" | |
45 | #include "libguile/lang.h" | |
4610b011 | 46 | #include "libguile/list.h" |
a0599745 | 47 | #include "libguile/macros.h" |
b7742c6b | 48 | #include "libguile/memoize.h" |
a0599745 MD |
49 | #include "libguile/modules.h" |
50 | #include "libguile/ports.h" | |
7e6e6b37 | 51 | #include "libguile/print.h" |
21628685 | 52 | #include "libguile/procprop.h" |
4abef68f | 53 | #include "libguile/programs.h" |
a0599745 | 54 | #include "libguile/root.h" |
21628685 DH |
55 | #include "libguile/smob.h" |
56 | #include "libguile/srcprop.h" | |
57 | #include "libguile/stackchk.h" | |
58 | #include "libguile/strings.h" | |
9de87eea | 59 | #include "libguile/threads.h" |
21628685 DH |
60 | #include "libguile/throw.h" |
61 | #include "libguile/validate.h" | |
a513ead3 | 62 | #include "libguile/values.h" |
21628685 | 63 | #include "libguile/vectors.h" |
4abef68f | 64 | #include "libguile/vm.h" |
a0599745 | 65 | |
a0599745 | 66 | #include "libguile/eval.h" |
0ee05b85 | 67 | #include "libguile/private-options.h" |
89efbff4 | 68 | |
0f2d19dd JB |
69 | \f |
70 | ||
0ee05b85 | 71 | |
b7742c6b | 72 | /* We have three levels of EVAL here: |
609a8b86 | 73 | |
b7742c6b | 74 | - eval (exp, env) |
89bff2fc | 75 | |
b7742c6b AW |
76 | evaluates EXP in environment ENV. ENV is a lexical environment |
77 | structure as used by the actual tree code evaluator. When ENV is | |
78 | a top-level environment, then changes to the current module are | |
79 | tracked by updating ENV so that it continues to be in sync with | |
80 | the current module. | |
e6729603 | 81 | |
b7742c6b | 82 | - scm_primitive_eval (exp) |
e6729603 | 83 | |
b7742c6b AW |
84 | evaluates EXP in the top-level environment as determined by the |
85 | current module. This is done by constructing a suitable | |
86 | environment and calling eval. Thus, changes to the | |
87 | top-level module are tracked normally. | |
e6729603 | 88 | |
b7742c6b | 89 | - scm_eval (exp, mod) |
e6729603 | 90 | |
b7742c6b AW |
91 | evaluates EXP while MOD is the current module. This is done |
92 | by setting the current module to MOD_OR_STATE, invoking | |
93 | scm_primitive_eval on EXP, and then restoring the current module | |
94 | to the value it had previously. That is, while EXP is evaluated, | |
95 | changes to the current module (or dynamic state) are tracked, | |
96 | but these changes do not persist when scm_eval returns. | |
e6729603 | 97 | |
b7742c6b | 98 | */ |
e6729603 | 99 | |
e6729603 | 100 | |
314b8716 AW |
101 | /* Boot closures. We only see these when compiling eval.scm, because once |
102 | eval.scm is in the house, closures are standard VM closures. | |
103 | */ | |
104 | ||
105 | static scm_t_bits scm_tc16_boot_closure; | |
106 | #define RETURN_BOOT_CLOSURE(code, env) SCM_RETURN_NEWSMOB2 (scm_tc16_boot_closure, (code), (env)) | |
107 | #define BOOT_CLOSURE_P(obj) SCM_TYP16_PREDICATE (scm_tc16_boot_closure, (obj)) | |
108 | #define BOOT_CLOSURE_CODE(x) SCM_SMOB_OBJECT (x) | |
109 | #define BOOT_CLOSURE_ENV(x) SCM_SMOB_OBJECT_2 (x) | |
110 | #define BOOT_CLOSURE_NUM_REQUIRED_ARGS(x) SCM_I_INUM (CAR (BOOT_CLOSURE_CODE (x))) | |
111 | #define BOOT_CLOSURE_HAS_REST_ARGS(x) scm_is_true (CADR (BOOT_CLOSURE_CODE (x))) | |
112 | #define BOOT_CLOSURE_BODY(x) CDDR (BOOT_CLOSURE_CODE (x)) | |
113 | ||
114 | ||
115 | ||
b7742c6b AW |
116 | #define CAR(x) SCM_CAR(x) |
117 | #define CDR(x) SCM_CDR(x) | |
118 | #define CAAR(x) SCM_CAAR(x) | |
119 | #define CADR(x) SCM_CADR(x) | |
120 | #define CDAR(x) SCM_CDAR(x) | |
121 | #define CDDR(x) SCM_CDDR(x) | |
122 | #define CADDR(x) SCM_CADDR(x) | |
123 | #define CDDDR(x) SCM_CDDDR(x) | |
e6729603 DH |
124 | |
125 | ||
b7742c6b | 126 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
e6729603 | 127 | |
b7742c6b | 128 | static void error_used_before_defined (void) |
d0624e39 | 129 | { |
b7742c6b AW |
130 | scm_error (scm_unbound_variable_key, NULL, |
131 | "Variable used before given a value", SCM_EOL, SCM_BOOL_F); | |
d0624e39 | 132 | } |
d0624e39 | 133 | |
b7742c6b AW |
134 | int |
135 | scm_badargsp (SCM formals, SCM args) | |
7e6e6b37 | 136 | { |
b7742c6b AW |
137 | while (!scm_is_null (formals)) |
138 | { | |
139 | if (!scm_is_pair (formals)) | |
140 | return 0; | |
141 | if (scm_is_null (args)) | |
142 | return 1; | |
143 | formals = CDR (formals); | |
144 | args = CDR (args); | |
145 | } | |
146 | return !scm_is_null (args) ? 1 : 0; | |
7e6e6b37 DH |
147 | } |
148 | ||
b7742c6b | 149 | /* the environment: |
3149a5b6 | 150 | (VAL ... . MOD) |
b7742c6b AW |
151 | If MOD is #f, it means the environment was captured before modules were |
152 | booted. | |
153 | If MOD is the literal value '(), we are evaluating at the top level, and so | |
154 | should track changes to the current module. You have to be careful in this | |
155 | case, because further lexical contours should capture the current module. | |
156 | */ | |
157 | #define CAPTURE_ENV(env) \ | |
158 | ((env == SCM_EOL) ? scm_current_module () : \ | |
159 | ((env == SCM_BOOL_F) ? scm_the_root_module () : env)) | |
6f81708a DH |
160 | |
161 | static SCM | |
b7742c6b | 162 | eval (SCM x, SCM env) |
6f81708a | 163 | { |
b7742c6b AW |
164 | SCM mx; |
165 | SCM proc = SCM_UNDEFINED, args = SCM_EOL; | |
b7ecadca | 166 | unsigned int argc; |
6f81708a | 167 | |
b7742c6b AW |
168 | loop: |
169 | SCM_TICK; | |
170 | if (!SCM_MEMOIZED_P (x)) | |
171 | abort (); | |
172 | ||
173 | mx = SCM_MEMOIZED_ARGS (x); | |
174 | switch (SCM_MEMOIZED_TAG (x)) | |
175 | { | |
176 | case SCM_M_BEGIN: | |
177 | for (; !scm_is_null (CDR (mx)); mx = CDR (mx)) | |
178 | eval (CAR (mx), env); | |
179 | x = CAR (mx); | |
180 | goto loop; | |
181 | ||
182 | case SCM_M_IF: | |
183 | if (scm_is_true (eval (CAR (mx), env))) | |
184 | x = CADR (mx); | |
6f81708a | 185 | else |
b7742c6b AW |
186 | x = CDDR (mx); |
187 | goto loop; | |
5fb64383 | 188 | |
b7742c6b AW |
189 | case SCM_M_LET: |
190 | { | |
191 | SCM inits = CAR (mx); | |
192 | SCM new_env = CAPTURE_ENV (env); | |
193 | for (; scm_is_pair (inits); inits = CDR (inits)) | |
194 | new_env = scm_cons (eval (CAR (inits), env), new_env); | |
195 | env = new_env; | |
196 | x = CDR (mx); | |
197 | goto loop; | |
198 | } | |
199 | ||
200 | case SCM_M_LAMBDA: | |
314b8716 | 201 | RETURN_BOOT_CLOSURE (mx, CAPTURE_ENV (env)); |
5fb64383 | 202 | |
b7742c6b AW |
203 | case SCM_M_QUOTE: |
204 | return mx; | |
0f2d19dd | 205 | |
b7742c6b AW |
206 | case SCM_M_DEFINE: |
207 | scm_define (CAR (mx), eval (CDR (mx), env)); | |
208 | return SCM_UNSPECIFIED; | |
212e58ed | 209 | |
d69531e2 AW |
210 | case SCM_M_DYNWIND: |
211 | { | |
212 | SCM in, out, res, old_winds; | |
213 | in = eval (CAR (mx), env); | |
214 | out = eval (CDDR (mx), env); | |
215 | scm_call_0 (in); | |
216 | old_winds = scm_i_dynwinds (); | |
217 | scm_i_set_dynwinds (scm_acons (in, out, old_winds)); | |
218 | res = eval (CADR (mx), env); | |
219 | scm_i_set_dynwinds (old_winds); | |
220 | scm_call_0 (out); | |
221 | return res; | |
222 | } | |
223 | ||
bb0229b5 AW |
224 | case SCM_M_WITH_FLUIDS: |
225 | { | |
226 | long i, len; | |
227 | SCM *fluidv, *valuesv, walk, wf, res; | |
228 | len = scm_ilength (CAR (mx)); | |
229 | fluidv = alloca (sizeof (SCM)*len); | |
230 | for (i = 0, walk = CAR (mx); i < len; i++, walk = CDR (walk)) | |
231 | fluidv[i] = eval (CAR (walk), env); | |
232 | valuesv = alloca (sizeof (SCM)*len); | |
233 | for (i = 0, walk = CADR (mx); i < len; i++, walk = CDR (walk)) | |
234 | valuesv[i] = eval (CAR (walk), env); | |
235 | ||
236 | wf = scm_i_make_with_fluids (len, fluidv, valuesv); | |
237 | scm_i_swap_with_fluids (wf, SCM_I_CURRENT_THREAD->dynamic_state); | |
238 | scm_i_set_dynwinds (scm_cons (wf, scm_i_dynwinds ())); | |
239 | res = eval (CDDR (mx), env); | |
240 | scm_i_swap_with_fluids (wf, SCM_I_CURRENT_THREAD->dynamic_state); | |
241 | scm_i_set_dynwinds (CDR (scm_i_dynwinds ())); | |
242 | ||
243 | return res; | |
244 | } | |
245 | ||
b7742c6b AW |
246 | case SCM_M_APPLY: |
247 | /* Evaluate the procedure to be applied. */ | |
248 | proc = eval (CAR (mx), env); | |
249 | /* Evaluate the argument holding the list of arguments */ | |
250 | args = eval (CADR (mx), env); | |
251 | ||
252 | apply_proc: | |
253 | /* Go here to tail-apply a procedure. PROC is the procedure and | |
254 | * ARGS is the list of arguments. */ | |
314b8716 | 255 | if (BOOT_CLOSURE_P (proc)) |
b7742c6b | 256 | { |
314b8716 AW |
257 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (proc); |
258 | SCM new_env = BOOT_CLOSURE_ENV (proc); | |
259 | if (BOOT_CLOSURE_HAS_REST_ARGS (proc)) | |
b7742c6b AW |
260 | { |
261 | if (SCM_UNLIKELY (scm_ilength (args) < nreq)) | |
262 | scm_wrong_num_args (proc); | |
263 | for (; nreq; nreq--, args = CDR (args)) | |
264 | new_env = scm_cons (CAR (args), new_env); | |
265 | new_env = scm_cons (args, new_env); | |
266 | } | |
267 | else | |
268 | { | |
269 | if (SCM_UNLIKELY (scm_ilength (args) != nreq)) | |
270 | scm_wrong_num_args (proc); | |
271 | for (; scm_is_pair (args); args = CDR (args)) | |
272 | new_env = scm_cons (CAR (args), new_env); | |
273 | } | |
314b8716 | 274 | x = BOOT_CLOSURE_BODY (proc); |
b7742c6b AW |
275 | env = new_env; |
276 | goto loop; | |
277 | } | |
278 | else | |
67e2d80a | 279 | return scm_vm_apply (scm_the_vm (), proc, args); |
212e58ed | 280 | |
b7742c6b AW |
281 | case SCM_M_CALL: |
282 | /* Evaluate the procedure to be applied. */ | |
283 | proc = eval (CAR (mx), env); | |
b7ecadca | 284 | argc = SCM_I_INUM (CADR (mx)); |
9331f91c | 285 | mx = CDDR (mx); |
212e58ed | 286 | |
314b8716 | 287 | if (BOOT_CLOSURE_P (proc)) |
5fa0939c | 288 | { |
314b8716 AW |
289 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (proc); |
290 | SCM new_env = BOOT_CLOSURE_ENV (proc); | |
291 | if (BOOT_CLOSURE_HAS_REST_ARGS (proc)) | |
b7742c6b | 292 | { |
b7ecadca | 293 | if (SCM_UNLIKELY (argc < nreq)) |
b7742c6b AW |
294 | scm_wrong_num_args (proc); |
295 | for (; nreq; nreq--, mx = CDR (mx)) | |
296 | new_env = scm_cons (eval (CAR (mx), env), new_env); | |
297 | { | |
298 | SCM rest = SCM_EOL; | |
299 | for (; scm_is_pair (mx); mx = CDR (mx)) | |
300 | rest = scm_cons (eval (CAR (mx), env), rest); | |
301 | new_env = scm_cons (scm_reverse (rest), | |
302 | new_env); | |
303 | } | |
304 | } | |
305 | else | |
306 | { | |
307 | for (; scm_is_pair (mx); mx = CDR (mx), nreq--) | |
308 | new_env = scm_cons (eval (CAR (mx), env), new_env); | |
309 | if (SCM_UNLIKELY (nreq != 0)) | |
310 | scm_wrong_num_args (proc); | |
311 | } | |
314b8716 | 312 | x = BOOT_CLOSURE_BODY (proc); |
b7742c6b AW |
313 | env = new_env; |
314 | goto loop; | |
5fa0939c | 315 | } |
b7742c6b AW |
316 | else |
317 | { | |
e2cf8eb9 | 318 | SCM *argv; |
b7ecadca LC |
319 | unsigned int i; |
320 | ||
e2cf8eb9 | 321 | argv = alloca (argc * sizeof (SCM)); |
b7ecadca LC |
322 | for (i = 0; i < argc; i++, mx = CDR (mx)) |
323 | argv[i] = eval (CAR (mx), env); | |
324 | ||
325 | return scm_c_vm_run (scm_the_vm (), proc, argv, argc); | |
b7742c6b | 326 | } |
b7ecadca | 327 | |
b7742c6b | 328 | case SCM_M_CONT: |
babfc7b2 | 329 | return scm_i_call_with_current_continuation (eval (mx, env)); |
212e58ed | 330 | |
b7742c6b AW |
331 | case SCM_M_CALL_WITH_VALUES: |
332 | { | |
333 | SCM producer; | |
334 | SCM v; | |
335 | ||
336 | producer = eval (CAR (mx), env); | |
337 | proc = eval (CDR (mx), env); /* proc is the consumer. */ | |
67e2d80a | 338 | v = scm_vm_apply (scm_the_vm (), producer, SCM_EOL); |
b7742c6b AW |
339 | if (SCM_VALUESP (v)) |
340 | args = scm_struct_ref (v, SCM_INUM0); | |
341 | else | |
342 | args = scm_list_1 (v); | |
343 | goto apply_proc; | |
344 | } | |
26d5b9b4 | 345 | |
b7742c6b AW |
346 | case SCM_M_LEXICAL_REF: |
347 | { | |
348 | int n; | |
349 | SCM ret; | |
350 | for (n = SCM_I_INUM (mx); n; n--) | |
351 | env = CDR (env); | |
352 | ret = CAR (env); | |
353 | if (SCM_UNLIKELY (SCM_UNBNDP (ret))) | |
354 | /* we don't know what variable, though, because we don't have its | |
355 | name */ | |
356 | error_used_before_defined (); | |
357 | return ret; | |
358 | } | |
1cc91f1b | 359 | |
b7742c6b AW |
360 | case SCM_M_LEXICAL_SET: |
361 | { | |
362 | int n; | |
363 | SCM val = eval (CDR (mx), env); | |
364 | for (n = SCM_I_INUM (CAR (mx)); n; n--) | |
365 | env = CDR (env); | |
366 | SCM_SETCAR (env, val); | |
367 | return SCM_UNSPECIFIED; | |
368 | } | |
910b5125 | 369 | |
b7742c6b AW |
370 | case SCM_M_TOPLEVEL_REF: |
371 | if (SCM_VARIABLEP (mx)) | |
372 | return SCM_VARIABLE_REF (mx); | |
373 | else | |
57d23e25 | 374 | { |
b7742c6b | 375 | while (scm_is_pair (env)) |
f3a8d1b7 | 376 | env = CDR (env); |
3149a5b6 AW |
377 | return SCM_VARIABLE_REF |
378 | (scm_memoize_variable_access_x (x, CAPTURE_ENV (env))); | |
57d23e25 | 379 | } |
57d23e25 | 380 | |
b7742c6b AW |
381 | case SCM_M_TOPLEVEL_SET: |
382 | { | |
383 | SCM var = CAR (mx); | |
384 | SCM val = eval (CDR (mx), env); | |
385 | if (SCM_VARIABLEP (var)) | |
386 | { | |
387 | SCM_VARIABLE_SET (var, val); | |
388 | return SCM_UNSPECIFIED; | |
389 | } | |
390 | else | |
391 | { | |
392 | while (scm_is_pair (env)) | |
f3a8d1b7 | 393 | env = CDR (env); |
3149a5b6 AW |
394 | SCM_VARIABLE_SET |
395 | (scm_memoize_variable_access_x (x, CAPTURE_ENV (env)), | |
396 | val); | |
b7742c6b AW |
397 | return SCM_UNSPECIFIED; |
398 | } | |
399 | } | |
910b5125 | 400 | |
b7742c6b AW |
401 | case SCM_M_MODULE_REF: |
402 | if (SCM_VARIABLEP (mx)) | |
403 | return SCM_VARIABLE_REF (mx); | |
910b5125 | 404 | else |
3149a5b6 AW |
405 | return SCM_VARIABLE_REF |
406 | (scm_memoize_variable_access_x (x, SCM_BOOL_F)); | |
910b5125 | 407 | |
b7742c6b AW |
408 | case SCM_M_MODULE_SET: |
409 | if (SCM_VARIABLEP (CDR (mx))) | |
910b5125 | 410 | { |
b7742c6b AW |
411 | SCM_VARIABLE_SET (CDR (mx), eval (CAR (mx), env)); |
412 | return SCM_UNSPECIFIED; | |
413 | } | |
414 | else | |
415 | { | |
3149a5b6 AW |
416 | SCM_VARIABLE_SET |
417 | (scm_memoize_variable_access_x (x, SCM_BOOL_F), | |
418 | eval (CAR (mx), env)); | |
b7742c6b | 419 | return SCM_UNSPECIFIED; |
910b5125 | 420 | } |
910b5125 | 421 | |
747022e4 AW |
422 | case SCM_M_PROMPT: |
423 | { | |
d2964315 | 424 | SCM vm, prompt, handler, res; |
747022e4 | 425 | |
d2964315 AW |
426 | vm = scm_the_vm (); |
427 | prompt = scm_c_make_prompt (eval (CAR (mx), env), SCM_VM_DATA (vm)->fp, | |
428 | SCM_VM_DATA (vm)->sp, SCM_VM_DATA (vm)->ip, | |
adbdfd6d | 429 | 0, -1, scm_i_dynwinds ()); |
747022e4 AW |
430 | handler = eval (CDDR (mx), env); |
431 | scm_i_set_dynwinds (scm_cons (prompt, scm_i_dynwinds ())); | |
432 | ||
433 | if (SCM_PROMPT_SETJMP (prompt)) | |
434 | { | |
b8af64db | 435 | /* The prompt exited nonlocally. */ |
747022e4 | 436 | proc = handler; |
b8af64db | 437 | args = scm_i_prompt_pop_abort_args_x (prompt); |
747022e4 AW |
438 | goto apply_proc; |
439 | } | |
440 | ||
441 | res = eval (CADR (mx), env); | |
442 | scm_i_set_dynwinds (CDR (scm_i_dynwinds ())); | |
443 | return res; | |
444 | } | |
445 | ||
b7742c6b AW |
446 | default: |
447 | abort (); | |
448 | } | |
910b5125 DH |
449 | } |
450 | ||
b7742c6b AW |
451 | scm_t_option scm_eval_opts[] = { |
452 | { SCM_OPTION_INTEGER, "stack", 22000, "Size of thread stacks (in machine words)." }, | |
453 | { 0 } | |
454 | }; | |
e6729603 | 455 | |
b7742c6b AW |
456 | scm_t_option scm_debug_opts[] = { |
457 | { SCM_OPTION_BOOLEAN, "cheap", 1, | |
458 | "*This option is now obsolete. Setting it has no effect." }, | |
459 | { SCM_OPTION_BOOLEAN, "breakpoints", 0, "*Check for breakpoints." }, | |
460 | { SCM_OPTION_BOOLEAN, "trace", 0, "*Trace mode." }, | |
461 | { SCM_OPTION_BOOLEAN, "procnames", 1, | |
462 | "Record procedure names at definition." }, | |
463 | { SCM_OPTION_BOOLEAN, "backwards", 0, | |
464 | "Display backtrace in anti-chronological order." }, | |
465 | { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." }, | |
466 | { SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." }, | |
467 | { SCM_OPTION_INTEGER, "frames", 3, | |
468 | "Maximum number of tail-recursive frames in backtrace." }, | |
469 | { SCM_OPTION_INTEGER, "maxdepth", 1000, | |
470 | "Maximal number of stored backtrace frames." }, | |
471 | { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." }, | |
472 | { SCM_OPTION_BOOLEAN, "backtrace", 0, "Show backtrace on error." }, | |
473 | { SCM_OPTION_BOOLEAN, "debug", 0, "Use the debugging evaluator." }, | |
474 | /* This default stack limit will be overridden by debug.c:init_stack_limit(), | |
475 | if we have getrlimit() and the stack limit is not INFINITY. But it is still | |
476 | important, as some systems have both the soft and the hard limits set to | |
477 | INFINITY; in that case we fall back to this value. | |
e6729603 | 478 | |
b7742c6b AW |
479 | The situation is aggravated by certain compilers, which can consume |
480 | "beaucoup de stack", as they say in France. | |
0f2d19dd | 481 | |
b7742c6b AW |
482 | See http://thread.gmane.org/gmane.lisp.guile.devel/8599/focus=8662 for |
483 | more discussion. This setting is 640 KB on 32-bit arches (should be enough | |
484 | for anyone!) or a whoppin' 1280 KB on 64-bit arches. | |
485 | */ | |
486 | { SCM_OPTION_INTEGER, "stack", 160000, "Stack size limit (measured in words; 0 = no check)." }, | |
487 | { SCM_OPTION_SCM, "show-file-name", (unsigned long)SCM_BOOL_T, | |
488 | "Show file names and line numbers " | |
489 | "in backtraces when not `#f'. A value of `base' " | |
490 | "displays only base names, while `#t' displays full names."}, | |
491 | { SCM_OPTION_BOOLEAN, "warn-deprecated", 0, | |
492 | "Warn when deprecated features are used." }, | |
493 | { 0 }, | |
494 | }; | |
212e58ed | 495 | |
1cc91f1b | 496 | |
b7742c6b AW |
497 | /* |
498 | * this ordering is awkward and illogical, but we maintain it for | |
499 | * compatibility. --hwn | |
500 | */ | |
501 | scm_t_option scm_evaluator_trap_table[] = { | |
502 | { SCM_OPTION_BOOLEAN, "traps", 0, "Enable evaluator traps." }, | |
503 | { SCM_OPTION_BOOLEAN, "enter-frame", 0, "Trap when eval enters new frame." }, | |
504 | { SCM_OPTION_BOOLEAN, "apply-frame", 0, "Trap when entering apply." }, | |
505 | { SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." }, | |
506 | { SCM_OPTION_SCM, "enter-frame-handler", (unsigned long)SCM_BOOL_F, "Handler for enter-frame traps." }, | |
507 | { SCM_OPTION_SCM, "apply-frame-handler", (unsigned long)SCM_BOOL_F, "Handler for apply-frame traps." }, | |
508 | { SCM_OPTION_SCM, "exit-frame-handler", (unsigned long)SCM_BOOL_F, "Handler for exit-frame traps." }, | |
509 | { SCM_OPTION_BOOLEAN, "memoize-symbol", 0, "Trap when memoizing a symbol." }, | |
510 | { SCM_OPTION_SCM, "memoize-symbol-handler", (unsigned long)SCM_BOOL_F, "The handler for memoization." }, | |
511 | { 0 } | |
512 | }; | |
8ea46249 | 513 | |
0f2d19dd | 514 | |
b7742c6b AW |
515 | SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0, |
516 | (SCM setting), | |
517 | "Option interface for the evaluation options. Instead of using\n" | |
518 | "this procedure directly, use the procedures @code{eval-enable},\n" | |
519 | "@code{eval-disable}, @code{eval-set!} and @code{eval-options}.") | |
520 | #define FUNC_NAME s_scm_eval_options_interface | |
212e58ed | 521 | { |
b7742c6b AW |
522 | SCM ans; |
523 | ||
524 | scm_dynwind_begin (0); | |
525 | scm_dynwind_critical_section (SCM_BOOL_F); | |
526 | ans = scm_options (setting, | |
527 | scm_eval_opts, | |
528 | FUNC_NAME); | |
529 | scm_dynwind_end (); | |
212e58ed | 530 | |
b7742c6b AW |
531 | return ans; |
532 | } | |
533 | #undef FUNC_NAME | |
0f2d19dd | 534 | |
1cc91f1b | 535 | |
b7742c6b AW |
536 | SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, |
537 | (SCM setting), | |
538 | "Option interface for the evaluator trap options.") | |
539 | #define FUNC_NAME s_scm_evaluator_traps | |
0f2d19dd | 540 | { |
b7742c6b | 541 | SCM ans; |
2a6f7afe | 542 | |
b7742c6b AW |
543 | |
544 | scm_options_try (setting, | |
545 | scm_evaluator_trap_table, | |
546 | FUNC_NAME, 1); | |
547 | SCM_CRITICAL_SECTION_START; | |
548 | ans = scm_options (setting, | |
549 | scm_evaluator_trap_table, | |
550 | FUNC_NAME); | |
2a6f7afe | 551 | |
b7742c6b AW |
552 | /* njrev: same again. */ |
553 | SCM_CRITICAL_SECTION_END; | |
554 | return ans; | |
555 | } | |
556 | #undef FUNC_NAME | |
2a6f7afe | 557 | |
2a6f7afe | 558 | |
2a6f7afe | 559 | |
b7742c6b | 560 | \f |
2a6f7afe | 561 | |
b7742c6b AW |
562 | /* Simple procedure calls |
563 | */ | |
2a6f7afe | 564 | |
b7742c6b AW |
565 | SCM |
566 | scm_call_0 (SCM proc) | |
567 | { | |
bf5a05f2 | 568 | return scm_c_vm_run (scm_the_vm (), proc, NULL, 0); |
0f2d19dd JB |
569 | } |
570 | ||
b7742c6b AW |
571 | SCM |
572 | scm_call_1 (SCM proc, SCM arg1) | |
212e58ed | 573 | { |
bf5a05f2 | 574 | return scm_c_vm_run (scm_the_vm (), proc, &arg1, 1); |
b7742c6b | 575 | } |
212e58ed | 576 | |
b7742c6b AW |
577 | SCM |
578 | scm_call_2 (SCM proc, SCM arg1, SCM arg2) | |
579 | { | |
bf5a05f2 AW |
580 | SCM args[] = { arg1, arg2 }; |
581 | return scm_c_vm_run (scm_the_vm (), proc, args, 2); | |
212e58ed DH |
582 | } |
583 | ||
b7742c6b AW |
584 | SCM |
585 | scm_call_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3) | |
0f2d19dd | 586 | { |
bf5a05f2 AW |
587 | SCM args[] = { arg1, arg2, arg3 }; |
588 | return scm_c_vm_run (scm_the_vm (), proc, args, 3); | |
0f2d19dd JB |
589 | } |
590 | ||
b7742c6b AW |
591 | SCM |
592 | scm_call_4 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4) | |
212e58ed | 593 | { |
bf5a05f2 AW |
594 | SCM args[] = { arg1, arg2, arg3, arg4 }; |
595 | return scm_c_vm_run (scm_the_vm (), proc, args, 4); | |
212e58ed DH |
596 | } |
597 | ||
86fd6dff AW |
598 | SCM |
599 | scm_call_n (SCM proc, SCM *argv, size_t nargs) | |
600 | { | |
601 | return scm_c_vm_run (scm_the_vm (), proc, argv, nargs); | |
602 | } | |
603 | ||
b7742c6b | 604 | /* Simple procedure applies |
9fbee57e | 605 | */ |
cc56ba80 | 606 | |
b7742c6b AW |
607 | SCM |
608 | scm_apply_0 (SCM proc, SCM args) | |
609 | { | |
610 | return scm_apply (proc, args, SCM_EOL); | |
0f572ba7 DH |
611 | } |
612 | ||
b7742c6b AW |
613 | SCM |
614 | scm_apply_1 (SCM proc, SCM arg1, SCM args) | |
0f572ba7 | 615 | { |
b7742c6b | 616 | return scm_apply (proc, scm_cons (arg1, args), SCM_EOL); |
8ae95199 DH |
617 | } |
618 | ||
b7742c6b AW |
619 | SCM |
620 | scm_apply_2 (SCM proc, SCM arg1, SCM arg2, SCM args) | |
0f2d19dd | 621 | { |
b7742c6b | 622 | return scm_apply (proc, scm_cons2 (arg1, arg2, args), SCM_EOL); |
0f2d19dd JB |
623 | } |
624 | ||
b7742c6b AW |
625 | SCM |
626 | scm_apply_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM args) | |
212e58ed | 627 | { |
b7742c6b AW |
628 | return scm_apply (proc, scm_cons (arg1, scm_cons2 (arg2, arg3, args)), |
629 | SCM_EOL); | |
212e58ed DH |
630 | } |
631 | ||
b7742c6b | 632 | /* This code processes the arguments to apply: |
8ea46249 | 633 | |
b7742c6b | 634 | (apply PROC ARG1 ... ARGS) |
302c12b4 | 635 | |
b7742c6b AW |
636 | Given a list (ARG1 ... ARGS), this function conses the ARG1 |
637 | ... arguments onto the front of ARGS, and returns the resulting | |
638 | list. Note that ARGS is a list; thus, the argument to this | |
639 | function is a list whose last element is a list. | |
302c12b4 | 640 | |
b7742c6b AW |
641 | Apply calls this function, and applies PROC to the elements of the |
642 | result. apply:nconc2last takes care of building the list of | |
643 | arguments, given (ARG1 ... ARGS). | |
a954ce1d | 644 | |
b7742c6b AW |
645 | Rather than do new consing, apply:nconc2last destroys its argument. |
646 | On that topic, this code came into my care with the following | |
647 | beautifully cryptic comment on that topic: "This will only screw | |
648 | you if you do (scm_apply scm_apply '( ... ))" If you know what | |
649 | they're referring to, send me a patch to this comment. */ | |
0f2d19dd | 650 | |
b7742c6b AW |
651 | SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0, |
652 | (SCM lst), | |
653 | "Given a list (@var{arg1} @dots{} @var{args}), this function\n" | |
654 | "conses the @var{arg1} @dots{} arguments onto the front of\n" | |
655 | "@var{args}, and returns the resulting list. Note that\n" | |
656 | "@var{args} is a list; thus, the argument to this function is\n" | |
657 | "a list whose last element is a list.\n" | |
658 | "Note: Rather than do new consing, @code{apply:nconc2last}\n" | |
659 | "destroys its argument, so use with care.") | |
660 | #define FUNC_NAME s_scm_nconc2last | |
212e58ed | 661 | { |
b7742c6b AW |
662 | SCM *lloc; |
663 | SCM_VALIDATE_NONEMPTYLIST (1, lst); | |
664 | lloc = &lst; | |
665 | while (!scm_is_null (SCM_CDR (*lloc))) /* Perhaps should be | |
666 | SCM_NULL_OR_NIL_P, but not | |
667 | needed in 99.99% of cases, | |
668 | and it could seriously hurt | |
669 | performance. - Neil */ | |
670 | lloc = SCM_CDRLOC (*lloc); | |
671 | SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME); | |
672 | *lloc = SCM_CAR (*lloc); | |
673 | return lst; | |
212e58ed | 674 | } |
b7742c6b | 675 | #undef FUNC_NAME |
212e58ed | 676 | |
b8229a3b MS |
677 | |
678 | ||
b7742c6b | 679 | /* Typechecking for multi-argument MAP and FOR-EACH. |
0f2d19dd | 680 | |
b7742c6b AW |
681 | Verify that each element of the vector ARGV, except for the first, |
682 | is a proper list whose length is LEN. Attribute errors to WHO, | |
683 | and claim that the i'th element of ARGV is WHO's i+2'th argument. */ | |
684 | static inline void | |
685 | check_map_args (SCM argv, | |
686 | long len, | |
687 | SCM gf, | |
688 | SCM proc, | |
689 | SCM args, | |
690 | const char *who) | |
212e58ed | 691 | { |
b7742c6b | 692 | long i; |
0f2d19dd | 693 | |
b7742c6b | 694 | for (i = SCM_SIMPLE_VECTOR_LENGTH (argv) - 1; i >= 1; i--) |
9fbee57e | 695 | { |
b7742c6b AW |
696 | SCM elt = SCM_SIMPLE_VECTOR_REF (argv, i); |
697 | long elt_len = scm_ilength (elt); | |
5cb22e96 | 698 | |
b7742c6b AW |
699 | if (elt_len < 0) |
700 | { | |
701 | if (gf) | |
702 | scm_apply_generic (gf, scm_cons (proc, args)); | |
703 | else | |
704 | scm_wrong_type_arg (who, i + 2, elt); | |
705 | } | |
1cc91f1b | 706 | |
b7742c6b AW |
707 | if (elt_len != len) |
708 | scm_out_of_range_pos (who, elt, scm_from_long (i + 2)); | |
0f2d19dd | 709 | } |
0f2d19dd | 710 | } |
6dbd0af5 | 711 | |
212e58ed | 712 | |
b7742c6b | 713 | SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map); |
212e58ed | 714 | |
b7742c6b AW |
715 | /* Note: Currently, scm_map applies PROC to the argument list(s) |
716 | sequentially, starting with the first element(s). This is used in | |
717 | evalext.c where the Scheme procedure `map-in-order', which guarantees | |
718 | sequential behaviour, is implemented using scm_map. If the | |
719 | behaviour changes, we need to update `map-in-order'. | |
720 | */ | |
0f2d19dd | 721 | |
b7742c6b AW |
722 | SCM |
723 | scm_map (SCM proc, SCM arg1, SCM args) | |
724 | #define FUNC_NAME s_map | |
0f2d19dd | 725 | { |
b7742c6b AW |
726 | long i, len; |
727 | SCM res = SCM_EOL; | |
728 | SCM *pres = &res; | |
0f2d19dd | 729 | |
b7742c6b AW |
730 | len = scm_ilength (arg1); |
731 | SCM_GASSERTn (len >= 0, | |
732 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map); | |
733 | SCM_VALIDATE_REST_ARGUMENT (args); | |
734 | if (scm_is_null (args)) | |
0f2d19dd | 735 | { |
b7742c6b AW |
736 | SCM_GASSERT2 (scm_is_true (scm_procedure_p (proc)), g_map, proc, arg1, SCM_ARG1, s_map); |
737 | while (SCM_NIMP (arg1)) | |
738 | { | |
739 | *pres = scm_list_1 (scm_call_1 (proc, SCM_CAR (arg1))); | |
740 | pres = SCM_CDRLOC (*pres); | |
741 | arg1 = SCM_CDR (arg1); | |
742 | } | |
743 | return res; | |
0f2d19dd | 744 | } |
b7742c6b AW |
745 | if (scm_is_null (SCM_CDR (args))) |
746 | { | |
747 | SCM arg2 = SCM_CAR (args); | |
748 | int len2 = scm_ilength (arg2); | |
749 | SCM_GASSERTn (scm_is_true (scm_procedure_p (proc)), g_map, | |
750 | scm_cons2 (proc, arg1, args), SCM_ARG1, s_map); | |
751 | SCM_GASSERTn (len2 >= 0, | |
752 | g_map, scm_cons2 (proc, arg1, args), SCM_ARG3, s_map); | |
753 | if (len2 != len) | |
754 | SCM_OUT_OF_RANGE (3, arg2); | |
755 | while (SCM_NIMP (arg1)) | |
756 | { | |
757 | *pres = scm_list_1 (scm_call_2 (proc, SCM_CAR (arg1), SCM_CAR (arg2))); | |
758 | pres = SCM_CDRLOC (*pres); | |
759 | arg1 = SCM_CDR (arg1); | |
760 | arg2 = SCM_CDR (arg2); | |
761 | } | |
762 | return res; | |
763 | } | |
764 | arg1 = scm_cons (arg1, args); | |
765 | args = scm_vector (arg1); | |
766 | check_map_args (args, len, g_map, proc, arg1, s_map); | |
767 | while (1) | |
d6754c23 | 768 | { |
b7742c6b AW |
769 | arg1 = SCM_EOL; |
770 | for (i = SCM_SIMPLE_VECTOR_LENGTH (args) - 1; i >= 0; i--) | |
771 | { | |
772 | SCM elt = SCM_SIMPLE_VECTOR_REF (args, i); | |
773 | if (SCM_IMP (elt)) | |
774 | return res; | |
775 | arg1 = scm_cons (SCM_CAR (elt), arg1); | |
776 | SCM_SIMPLE_VECTOR_SET (args, i, SCM_CDR (elt)); | |
777 | } | |
778 | *pres = scm_list_1 (scm_apply (proc, arg1, SCM_EOL)); | |
779 | pres = SCM_CDRLOC (*pres); | |
d6754c23 | 780 | } |
0f2d19dd | 781 | } |
b7742c6b | 782 | #undef FUNC_NAME |
0f2d19dd | 783 | |
302c12b4 | 784 | |
b7742c6b | 785 | SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each); |
d6754c23 | 786 | |
b7742c6b AW |
787 | SCM |
788 | scm_for_each (SCM proc, SCM arg1, SCM args) | |
789 | #define FUNC_NAME s_for_each | |
0f2d19dd | 790 | { |
b7742c6b AW |
791 | long i, len; |
792 | len = scm_ilength (arg1); | |
793 | SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args), | |
794 | SCM_ARG2, s_for_each); | |
795 | SCM_VALIDATE_REST_ARGUMENT (args); | |
796 | if (scm_is_null (args)) | |
26d5b9b4 | 797 | { |
b7742c6b AW |
798 | SCM_GASSERT2 (scm_is_true (scm_procedure_p (proc)), g_for_each, |
799 | proc, arg1, SCM_ARG1, s_for_each); | |
800 | while (SCM_NIMP (arg1)) | |
801 | { | |
802 | scm_call_1 (proc, SCM_CAR (arg1)); | |
803 | arg1 = SCM_CDR (arg1); | |
804 | } | |
805 | return SCM_UNSPECIFIED; | |
26d5b9b4 | 806 | } |
b7742c6b | 807 | if (scm_is_null (SCM_CDR (args))) |
26d5b9b4 | 808 | { |
b7742c6b AW |
809 | SCM arg2 = SCM_CAR (args); |
810 | int len2 = scm_ilength (arg2); | |
811 | SCM_GASSERTn (scm_is_true (scm_procedure_p (proc)), g_for_each, | |
812 | scm_cons2 (proc, arg1, args), SCM_ARG1, s_for_each); | |
813 | SCM_GASSERTn (len2 >= 0, g_for_each, | |
814 | scm_cons2 (proc, arg1, args), SCM_ARG3, s_for_each); | |
815 | if (len2 != len) | |
816 | SCM_OUT_OF_RANGE (3, arg2); | |
817 | while (SCM_NIMP (arg1)) | |
818 | { | |
819 | scm_call_2 (proc, SCM_CAR (arg1), SCM_CAR (arg2)); | |
820 | arg1 = SCM_CDR (arg1); | |
821 | arg2 = SCM_CDR (arg2); | |
822 | } | |
823 | return SCM_UNSPECIFIED; | |
26d5b9b4 | 824 | } |
b7742c6b AW |
825 | arg1 = scm_cons (arg1, args); |
826 | args = scm_vector (arg1); | |
827 | check_map_args (args, len, g_for_each, proc, arg1, s_for_each); | |
828 | while (1) | |
302c12b4 | 829 | { |
b7742c6b AW |
830 | arg1 = SCM_EOL; |
831 | for (i = SCM_SIMPLE_VECTOR_LENGTH (args) - 1; i >= 0; i--) | |
71560395 | 832 | { |
b7742c6b AW |
833 | SCM elt = SCM_SIMPLE_VECTOR_REF (args, i); |
834 | if (SCM_IMP (elt)) | |
835 | return SCM_UNSPECIFIED; | |
836 | arg1 = scm_cons (SCM_CAR (elt), arg1); | |
837 | SCM_SIMPLE_VECTOR_SET (args, i, SCM_CDR (elt)); | |
838 | } | |
839 | scm_apply (proc, arg1, SCM_EOL); | |
840 | } | |
841 | } | |
842 | #undef FUNC_NAME | |
71560395 | 843 | |
71560395 | 844 | |
5f161164 AW |
845 | static SCM |
846 | scm_c_primitive_eval (SCM exp) | |
b7742c6b AW |
847 | { |
848 | SCM transformer = scm_current_module_transformer (); | |
849 | if (scm_is_true (transformer)) | |
850 | exp = scm_call_1 (transformer, exp); | |
851 | exp = scm_memoize_expression (exp); | |
852 | return eval (exp, SCM_EOL); | |
853 | } | |
5f161164 AW |
854 | |
855 | static SCM var_primitive_eval; | |
856 | SCM | |
857 | scm_primitive_eval (SCM exp) | |
858 | { | |
859 | return scm_c_vm_run (scm_the_vm (), scm_variable_ref (var_primitive_eval), | |
860 | &exp, 1); | |
861 | } | |
71560395 | 862 | |
b7742c6b AW |
863 | |
864 | /* Eval does not take the second arg optionally. This is intentional | |
865 | * in order to be R5RS compatible, and to prepare for the new module | |
866 | * system, where we would like to make the choice of evaluation | |
867 | * environment explicit. */ | |
868 | ||
869 | SCM_DEFINE (scm_eval, "eval", 2, 0, 0, | |
870 | (SCM exp, SCM module_or_state), | |
871 | "Evaluate @var{exp}, a list representing a Scheme expression,\n" | |
872 | "in the top-level environment specified by\n" | |
873 | "@var{module_or_state}.\n" | |
874 | "While @var{exp} is evaluated (using @code{primitive-eval}),\n" | |
875 | "@var{module_or_state} is made the current module when\n" | |
876 | "it is a module, or the current dynamic state when it is\n" | |
877 | "a dynamic state." | |
878 | "Example: (eval '(+ 1 2) (interaction-environment))") | |
879 | #define FUNC_NAME s_scm_eval | |
880 | { | |
881 | SCM res; | |
882 | ||
883 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
884 | if (scm_is_dynamic_state (module_or_state)) | |
885 | scm_dynwind_current_dynamic_state (module_or_state); | |
886 | else if (scm_module_system_booted_p) | |
887 | { | |
888 | SCM_VALIDATE_MODULE (2, module_or_state); | |
889 | scm_dynwind_current_module (module_or_state); | |
71560395 | 890 | } |
b7742c6b | 891 | /* otherwise if the module system isn't booted, ignore the module arg */ |
71560395 | 892 | |
b7742c6b AW |
893 | res = scm_primitive_eval (exp); |
894 | ||
895 | scm_dynwind_end (); | |
896 | return res; | |
897 | } | |
898 | #undef FUNC_NAME | |
71560395 AW |
899 | |
900 | ||
b7742c6b | 901 | static SCM f_apply; |
71560395 AW |
902 | |
903 | /* Apply a function to a list of arguments. | |
904 | ||
905 | This function is exported to the Scheme level as taking two | |
906 | required arguments and a tail argument, as if it were: | |
907 | (lambda (proc arg1 . args) ...) | |
908 | Thus, if you just have a list of arguments to pass to a procedure, | |
909 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
910 | args, pass the first as ARG1, then cons any remaining fixed args | |
911 | onto the front of your argument list, and pass that as ARGS. */ | |
912 | ||
913 | SCM | |
914 | scm_apply (SCM proc, SCM arg1, SCM args) | |
915 | { | |
b7742c6b | 916 | /* Fix things up so that args contains all args. */ |
71560395 | 917 | if (scm_is_null (args)) |
b7742c6b | 918 | args = arg1; |
71560395 | 919 | else |
b7742c6b | 920 | args = scm_cons_star (arg1, args); |
71560395 | 921 | |
67e2d80a | 922 | return scm_vm_apply (scm_the_vm (), proc, args); |
b7742c6b | 923 | } |
434f2f7a DH |
924 | |
925 | ||
314b8716 AW |
926 | static SCM |
927 | boot_closure_apply (SCM closure, SCM args) | |
928 | { | |
929 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (closure); | |
930 | SCM new_env = BOOT_CLOSURE_ENV (closure); | |
931 | if (BOOT_CLOSURE_HAS_REST_ARGS (closure)) | |
932 | { | |
933 | if (SCM_UNLIKELY (scm_ilength (args) < nreq)) | |
934 | scm_wrong_num_args (closure); | |
935 | for (; nreq; nreq--, args = CDR (args)) | |
936 | new_env = scm_cons (CAR (args), new_env); | |
937 | new_env = scm_cons (args, new_env); | |
938 | } | |
939 | else | |
940 | { | |
941 | if (SCM_UNLIKELY (scm_ilength (args) != nreq)) | |
942 | scm_wrong_num_args (closure); | |
943 | for (; scm_is_pair (args); args = CDR (args)) | |
944 | new_env = scm_cons (CAR (args), new_env); | |
945 | } | |
946 | return eval (BOOT_CLOSURE_BODY (closure), new_env); | |
947 | } | |
948 | ||
949 | static int | |
950 | boot_closure_print (SCM closure, SCM port, scm_print_state *pstate) | |
951 | { | |
952 | SCM args; | |
953 | scm_puts ("#<boot-closure ", port); | |
954 | scm_uintprint ((unsigned long)SCM2PTR (closure), 16, port); | |
955 | scm_putc (' ', port); | |
956 | args = scm_make_list (scm_from_int (BOOT_CLOSURE_NUM_REQUIRED_ARGS (closure)), | |
957 | scm_from_locale_symbol ("_")); | |
958 | if (BOOT_CLOSURE_HAS_REST_ARGS (closure)) | |
959 | args = scm_cons_star (scm_from_locale_symbol ("_"), args); | |
960 | scm_display (args, port); | |
961 | scm_putc ('>', port); | |
962 | return 1; | |
963 | } | |
964 | ||
0f2d19dd JB |
965 | void |
966 | scm_init_eval () | |
0f2d19dd | 967 | { |
5f161164 AW |
968 | SCM primitive_eval; |
969 | ||
33b97402 | 970 | scm_init_opts (scm_evaluator_traps, |
62560650 | 971 | scm_evaluator_trap_table); |
33b97402 | 972 | scm_init_opts (scm_eval_options_interface, |
62560650 | 973 | scm_eval_opts); |
33b97402 | 974 | |
df9ca8d8 | 975 | f_apply = scm_c_define_gsubr ("apply", 2, 0, 1, scm_apply); |
86d31dfe | 976 | |
314b8716 AW |
977 | scm_tc16_boot_closure = scm_make_smob_type ("boot-closure", 0); |
978 | scm_set_smob_apply (scm_tc16_boot_closure, boot_closure_apply, 0, 0, 1); | |
979 | scm_set_smob_print (scm_tc16_boot_closure, boot_closure_print); | |
980 | ||
5f161164 AW |
981 | primitive_eval = scm_c_make_gsubr ("primitive-eval", 1, 0, 0, |
982 | scm_c_primitive_eval); | |
983 | var_primitive_eval = scm_define (SCM_SUBR_NAME (primitive_eval), | |
984 | primitive_eval); | |
985 | ||
a0599745 | 986 | #include "libguile/eval.x" |
0f2d19dd | 987 | } |
0f2d19dd | 988 | |
89e00824 ML |
989 | /* |
990 | Local Variables: | |
991 | c-file-style: "gnu" | |
992 | End: | |
993 | */ | |
62560650 | 994 |