Commit | Line | Data |
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747bd534 AW |
1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004, |
2 | * 2005,2006,2007,2008,2009,2010,2011,2012,2013 | |
434f2f7a | 3 | * Free Software Foundation, Inc. |
0f2d19dd | 4 | * |
73be1d9e | 5 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
6 | * modify it under the terms of the GNU Lesser General Public License |
7 | * as published by the Free Software Foundation; either version 3 of | |
8 | * the License, or (at your option) any later version. | |
0f2d19dd | 9 | * |
53befeb7 NJ |
10 | * This library is distributed in the hope that it will be useful, but |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. | |
0f2d19dd | 14 | * |
73be1d9e MV |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
18 | * 02110-1301 USA | |
73be1d9e | 19 | */ |
1bbd0b84 | 20 | |
0f2d19dd JB |
21 | \f |
22 | ||
dbb605f5 | 23 | #ifdef HAVE_CONFIG_H |
3d05f2e0 RB |
24 | # include <config.h> |
25 | #endif | |
0f2d19dd | 26 | |
f7439099 | 27 | #include <alloca.h> |
741b8a23 | 28 | #include <stdarg.h> |
3d05f2e0 | 29 | |
f7439099 | 30 | #include "libguile/__scm.h" |
48b96f4b | 31 | |
a0599745 | 32 | #include "libguile/_scm.h" |
21628685 DH |
33 | #include "libguile/alist.h" |
34 | #include "libguile/async.h" | |
35 | #include "libguile/continuations.h" | |
747022e4 | 36 | #include "libguile/control.h" |
a0599745 | 37 | #include "libguile/debug.h" |
328dc9a3 | 38 | #include "libguile/deprecation.h" |
09074dbf | 39 | #include "libguile/dynwind.h" |
a0599745 | 40 | #include "libguile/eq.h" |
a310a1d1 | 41 | #include "libguile/expand.h" |
21628685 | 42 | #include "libguile/feature.h" |
21628685 DH |
43 | #include "libguile/goops.h" |
44 | #include "libguile/hash.h" | |
45 | #include "libguile/hashtab.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; | |
b2b33168 AW |
106 | #define RETURN_BOOT_CLOSURE(code, env) \ |
107 | SCM_RETURN_NEWSMOB2 (scm_tc16_boot_closure, SCM_UNPACK (code), SCM_UNPACK (env)) | |
314b8716 AW |
108 | #define BOOT_CLOSURE_P(obj) SCM_TYP16_PREDICATE (scm_tc16_boot_closure, (obj)) |
109 | #define BOOT_CLOSURE_CODE(x) SCM_SMOB_OBJECT (x) | |
110 | #define BOOT_CLOSURE_ENV(x) SCM_SMOB_OBJECT_2 (x) | |
8f9c5b58 | 111 | #define BOOT_CLOSURE_BODY(x) CAR (BOOT_CLOSURE_CODE (x)) |
c438cd71 LC |
112 | #define BOOT_CLOSURE_NUM_REQUIRED_ARGS(x) (SCM_I_INUM (CADDR (BOOT_CLOSURE_CODE (x)))) |
113 | #define BOOT_CLOSURE_IS_FIXED(x) (scm_is_null (CDDDR (BOOT_CLOSURE_CODE (x)))) | |
8f9c5b58 | 114 | /* NB: One may only call the following accessors if the closure is not FIXED. */ |
c438cd71 LC |
115 | #define BOOT_CLOSURE_HAS_REST_ARGS(x) scm_is_true (CADDR (SCM_CDR (BOOT_CLOSURE_CODE (x)))) |
116 | #define BOOT_CLOSURE_IS_REST(x) scm_is_null (SCM_CDR (CDDDR (BOOT_CLOSURE_CODE (x)))) | |
8f9c5b58 AW |
117 | /* NB: One may only call the following accessors if the closure is not REST. */ |
118 | #define BOOT_CLOSURE_IS_FULL(x) (1) | |
dc3e203e AW |
119 | #define BOOT_CLOSURE_PARSE_FULL(fu_,body,nargs,rest,nopt,kw,inits,alt) \ |
120 | do { SCM fu = fu_; \ | |
c438cd71 | 121 | body = CAR (fu); fu = CDDR (fu); \ |
dc3e203e AW |
122 | \ |
123 | rest = kw = alt = SCM_BOOL_F; \ | |
124 | inits = SCM_EOL; \ | |
125 | nopt = 0; \ | |
126 | \ | |
127 | nreq = SCM_I_INUM (CAR (fu)); fu = CDR (fu); \ | |
128 | if (scm_is_pair (fu)) \ | |
129 | { \ | |
130 | rest = CAR (fu); fu = CDR (fu); \ | |
131 | if (scm_is_pair (fu)) \ | |
132 | { \ | |
133 | nopt = SCM_I_INUM (CAR (fu)); fu = CDR (fu); \ | |
134 | kw = CAR (fu); fu = CDR (fu); \ | |
135 | inits = CAR (fu); fu = CDR (fu); \ | |
136 | alt = CAR (fu); \ | |
137 | } \ | |
138 | } \ | |
d8a071fc | 139 | } while (0) |
7572ee52 AW |
140 | static void prepare_boot_closure_env_for_apply (SCM proc, SCM args, |
141 | SCM *out_body, SCM *out_env); | |
142 | static void prepare_boot_closure_env_for_eval (SCM proc, unsigned int argc, | |
143 | SCM exps, SCM *out_body, | |
144 | SCM *inout_env); | |
314b8716 AW |
145 | |
146 | ||
b7742c6b AW |
147 | #define CAR(x) SCM_CAR(x) |
148 | #define CDR(x) SCM_CDR(x) | |
149 | #define CAAR(x) SCM_CAAR(x) | |
150 | #define CADR(x) SCM_CADR(x) | |
151 | #define CDAR(x) SCM_CDAR(x) | |
152 | #define CDDR(x) SCM_CDDR(x) | |
153 | #define CADDR(x) SCM_CADDR(x) | |
154 | #define CDDDR(x) SCM_CDDDR(x) | |
e6729603 DH |
155 | |
156 | ||
b7742c6b | 157 | SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable"); |
e6729603 | 158 | |
b7742c6b | 159 | static void error_used_before_defined (void) |
d0624e39 | 160 | { |
b7742c6b AW |
161 | scm_error (scm_unbound_variable_key, NULL, |
162 | "Variable used before given a value", SCM_EOL, SCM_BOOL_F); | |
d0624e39 | 163 | } |
d0624e39 | 164 | |
d8a071fc AW |
165 | static void error_invalid_keyword (SCM proc) |
166 | { | |
4a655e50 | 167 | scm_error_scm (scm_from_latin1_symbol ("keyword-argument-error"), proc, |
d8a071fc AW |
168 | scm_from_locale_string ("Invalid keyword"), SCM_EOL, |
169 | SCM_BOOL_F); | |
170 | } | |
171 | ||
172 | static void error_unrecognized_keyword (SCM proc) | |
173 | { | |
4a655e50 | 174 | scm_error_scm (scm_from_latin1_symbol ("keyword-argument-error"), proc, |
d8a071fc AW |
175 | scm_from_locale_string ("Unrecognized keyword"), SCM_EOL, |
176 | SCM_BOOL_F); | |
177 | } | |
178 | ||
179 | ||
f3a9a51d AW |
180 | /* Multiple values truncation. */ |
181 | static SCM | |
182 | truncate_values (SCM x) | |
183 | { | |
184 | if (SCM_LIKELY (!SCM_VALUESP (x))) | |
185 | return x; | |
186 | else | |
187 | { | |
188 | SCM l = scm_struct_ref (x, SCM_INUM0); | |
189 | if (SCM_LIKELY (scm_is_pair (l))) | |
190 | return scm_car (l); | |
191 | else | |
192 | { | |
193 | scm_ithrow (scm_from_latin1_symbol ("vm-run"), | |
194 | scm_list_3 (scm_from_latin1_symbol ("vm-run"), | |
195 | scm_from_locale_string | |
196 | ("Too few values returned to continuation"), | |
197 | SCM_EOL), | |
198 | 1); | |
199 | /* Not reached. */ | |
200 | return SCM_BOOL_F; | |
201 | } | |
202 | } | |
203 | } | |
204 | #define EVAL1(x, env) (truncate_values (eval ((x), (env)))) | |
205 | ||
b7742c6b | 206 | /* the environment: |
3149a5b6 | 207 | (VAL ... . MOD) |
b7742c6b AW |
208 | If MOD is #f, it means the environment was captured before modules were |
209 | booted. | |
210 | If MOD is the literal value '(), we are evaluating at the top level, and so | |
211 | should track changes to the current module. You have to be careful in this | |
212 | case, because further lexical contours should capture the current module. | |
213 | */ | |
214 | #define CAPTURE_ENV(env) \ | |
393baa8a AW |
215 | (scm_is_null (env) ? scm_current_module () : \ |
216 | (scm_is_false (env) ? scm_the_root_module () : env)) | |
6f81708a DH |
217 | |
218 | static SCM | |
b7742c6b | 219 | eval (SCM x, SCM env) |
6f81708a | 220 | { |
b7742c6b AW |
221 | SCM mx; |
222 | SCM proc = SCM_UNDEFINED, args = SCM_EOL; | |
b7ecadca | 223 | unsigned int argc; |
6f81708a | 224 | |
b7742c6b AW |
225 | loop: |
226 | SCM_TICK; | |
227 | if (!SCM_MEMOIZED_P (x)) | |
228 | abort (); | |
229 | ||
230 | mx = SCM_MEMOIZED_ARGS (x); | |
231 | switch (SCM_MEMOIZED_TAG (x)) | |
232 | { | |
6fc3eae4 AW |
233 | case SCM_M_SEQ: |
234 | eval (CAR (mx), env); | |
235 | x = CDR (mx); | |
b7742c6b AW |
236 | goto loop; |
237 | ||
238 | case SCM_M_IF: | |
f3a9a51d | 239 | if (scm_is_true (EVAL1 (CAR (mx), env))) |
b7742c6b | 240 | x = CADR (mx); |
6f81708a | 241 | else |
b7742c6b AW |
242 | x = CDDR (mx); |
243 | goto loop; | |
5fb64383 | 244 | |
b7742c6b AW |
245 | case SCM_M_LET: |
246 | { | |
247 | SCM inits = CAR (mx); | |
248 | SCM new_env = CAPTURE_ENV (env); | |
249 | for (; scm_is_pair (inits); inits = CDR (inits)) | |
f3a9a51d AW |
250 | new_env = scm_cons (EVAL1 (CAR (inits), env), |
251 | new_env); | |
b7742c6b AW |
252 | env = new_env; |
253 | x = CDR (mx); | |
254 | goto loop; | |
255 | } | |
256 | ||
257 | case SCM_M_LAMBDA: | |
314b8716 | 258 | RETURN_BOOT_CLOSURE (mx, CAPTURE_ENV (env)); |
5fb64383 | 259 | |
b7742c6b AW |
260 | case SCM_M_QUOTE: |
261 | return mx; | |
0f2d19dd | 262 | |
b7742c6b | 263 | case SCM_M_DEFINE: |
f3a9a51d | 264 | scm_define (CAR (mx), EVAL1 (CDR (mx), env)); |
b7742c6b | 265 | return SCM_UNSPECIFIED; |
212e58ed | 266 | |
b7742c6b AW |
267 | case SCM_M_APPLY: |
268 | /* Evaluate the procedure to be applied. */ | |
f3a9a51d | 269 | proc = EVAL1 (CAR (mx), env); |
b7742c6b | 270 | /* Evaluate the argument holding the list of arguments */ |
f3a9a51d | 271 | args = EVAL1 (CADR (mx), env); |
b7742c6b AW |
272 | |
273 | apply_proc: | |
274 | /* Go here to tail-apply a procedure. PROC is the procedure and | |
275 | * ARGS is the list of arguments. */ | |
314b8716 | 276 | if (BOOT_CLOSURE_P (proc)) |
b7742c6b | 277 | { |
7572ee52 | 278 | prepare_boot_closure_env_for_apply (proc, args, &x, &env); |
b7742c6b AW |
279 | goto loop; |
280 | } | |
281 | else | |
ea9f4f4b | 282 | return scm_call_with_vm (scm_the_vm (), proc, args); |
212e58ed | 283 | |
b7742c6b AW |
284 | case SCM_M_CALL: |
285 | /* Evaluate the procedure to be applied. */ | |
f3a9a51d | 286 | proc = EVAL1 (CAR (mx), env); |
b7ecadca | 287 | argc = SCM_I_INUM (CADR (mx)); |
9331f91c | 288 | mx = CDDR (mx); |
212e58ed | 289 | |
314b8716 | 290 | if (BOOT_CLOSURE_P (proc)) |
5fa0939c | 291 | { |
7572ee52 | 292 | prepare_boot_closure_env_for_eval (proc, argc, mx, &x, &env); |
b7742c6b | 293 | goto loop; |
5fa0939c | 294 | } |
b7742c6b AW |
295 | else |
296 | { | |
e2cf8eb9 | 297 | SCM *argv; |
b7ecadca LC |
298 | unsigned int i; |
299 | ||
e2cf8eb9 | 300 | argv = alloca (argc * sizeof (SCM)); |
b7ecadca | 301 | for (i = 0; i < argc; i++, mx = CDR (mx)) |
f3a9a51d | 302 | argv[i] = EVAL1 (CAR (mx), env); |
b7ecadca LC |
303 | |
304 | return scm_c_vm_run (scm_the_vm (), proc, argv, argc); | |
b7742c6b | 305 | } |
b7ecadca | 306 | |
b7742c6b | 307 | case SCM_M_CONT: |
f3a9a51d | 308 | return scm_i_call_with_current_continuation (EVAL1 (mx, env)); |
212e58ed | 309 | |
b7742c6b AW |
310 | case SCM_M_CALL_WITH_VALUES: |
311 | { | |
312 | SCM producer; | |
313 | SCM v; | |
314 | ||
f3a9a51d AW |
315 | producer = EVAL1 (CAR (mx), env); |
316 | /* `proc' is the consumer. */ | |
317 | proc = EVAL1 (CDR (mx), env); | |
ea9f4f4b | 318 | v = scm_call_with_vm (scm_the_vm (), producer, SCM_EOL); |
b7742c6b AW |
319 | if (SCM_VALUESP (v)) |
320 | args = scm_struct_ref (v, SCM_INUM0); | |
321 | else | |
322 | args = scm_list_1 (v); | |
323 | goto apply_proc; | |
324 | } | |
26d5b9b4 | 325 | |
b7742c6b AW |
326 | case SCM_M_LEXICAL_REF: |
327 | { | |
328 | int n; | |
329 | SCM ret; | |
330 | for (n = SCM_I_INUM (mx); n; n--) | |
331 | env = CDR (env); | |
332 | ret = CAR (env); | |
333 | if (SCM_UNLIKELY (SCM_UNBNDP (ret))) | |
334 | /* we don't know what variable, though, because we don't have its | |
335 | name */ | |
336 | error_used_before_defined (); | |
337 | return ret; | |
338 | } | |
1cc91f1b | 339 | |
b7742c6b AW |
340 | case SCM_M_LEXICAL_SET: |
341 | { | |
342 | int n; | |
f3a9a51d | 343 | SCM val = EVAL1 (CDR (mx), env); |
b7742c6b AW |
344 | for (n = SCM_I_INUM (CAR (mx)); n; n--) |
345 | env = CDR (env); | |
346 | SCM_SETCAR (env, val); | |
347 | return SCM_UNSPECIFIED; | |
348 | } | |
910b5125 | 349 | |
b7742c6b AW |
350 | case SCM_M_TOPLEVEL_REF: |
351 | if (SCM_VARIABLEP (mx)) | |
352 | return SCM_VARIABLE_REF (mx); | |
353 | else | |
57d23e25 | 354 | { |
b7742c6b | 355 | while (scm_is_pair (env)) |
f3a8d1b7 | 356 | env = CDR (env); |
3149a5b6 AW |
357 | return SCM_VARIABLE_REF |
358 | (scm_memoize_variable_access_x (x, CAPTURE_ENV (env))); | |
57d23e25 | 359 | } |
57d23e25 | 360 | |
b7742c6b AW |
361 | case SCM_M_TOPLEVEL_SET: |
362 | { | |
363 | SCM var = CAR (mx); | |
f3a9a51d | 364 | SCM val = EVAL1 (CDR (mx), env); |
b7742c6b AW |
365 | if (SCM_VARIABLEP (var)) |
366 | { | |
367 | SCM_VARIABLE_SET (var, val); | |
368 | return SCM_UNSPECIFIED; | |
369 | } | |
370 | else | |
371 | { | |
372 | while (scm_is_pair (env)) | |
f3a8d1b7 | 373 | env = CDR (env); |
3149a5b6 AW |
374 | SCM_VARIABLE_SET |
375 | (scm_memoize_variable_access_x (x, CAPTURE_ENV (env)), | |
376 | val); | |
b7742c6b AW |
377 | return SCM_UNSPECIFIED; |
378 | } | |
379 | } | |
910b5125 | 380 | |
b7742c6b AW |
381 | case SCM_M_MODULE_REF: |
382 | if (SCM_VARIABLEP (mx)) | |
383 | return SCM_VARIABLE_REF (mx); | |
910b5125 | 384 | else |
3149a5b6 AW |
385 | return SCM_VARIABLE_REF |
386 | (scm_memoize_variable_access_x (x, SCM_BOOL_F)); | |
910b5125 | 387 | |
b7742c6b AW |
388 | case SCM_M_MODULE_SET: |
389 | if (SCM_VARIABLEP (CDR (mx))) | |
910b5125 | 390 | { |
f3a9a51d | 391 | SCM_VARIABLE_SET (CDR (mx), EVAL1 (CAR (mx), env)); |
b7742c6b AW |
392 | return SCM_UNSPECIFIED; |
393 | } | |
394 | else | |
395 | { | |
3149a5b6 AW |
396 | SCM_VARIABLE_SET |
397 | (scm_memoize_variable_access_x (x, SCM_BOOL_F), | |
f3a9a51d | 398 | EVAL1 (CAR (mx), env)); |
b7742c6b | 399 | return SCM_UNSPECIFIED; |
910b5125 | 400 | } |
910b5125 | 401 | |
1773bc7d | 402 | case SCM_M_CALL_WITH_PROMPT: |
747022e4 | 403 | { |
9ede013f | 404 | SCM vm, k, res; |
9d381ba4 | 405 | scm_i_jmp_buf registers; |
9ede013f AW |
406 | /* We need the handler after nonlocal return to the setjmp, so |
407 | make sure it is volatile. */ | |
408 | volatile SCM handler; | |
409 | ||
410 | k = EVAL1 (CAR (mx), env); | |
f3a9a51d | 411 | handler = EVAL1 (CDDR (mx), env); |
9ede013f AW |
412 | vm = scm_the_vm (); |
413 | ||
414 | /* Push the prompt onto the dynamic stack. */ | |
9ede013f | 415 | scm_dynstack_push_prompt (&SCM_I_CURRENT_THREAD->dynstack, |
9d381ba4 AW |
416 | SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY, |
417 | k, | |
418 | SCM_VM_DATA (vm)->fp, | |
419 | SCM_VM_DATA (vm)->sp, | |
420 | SCM_VM_DATA (vm)->ip, | |
421 | ®isters); | |
422 | ||
423 | if (SCM_I_SETJMP (registers)) | |
747022e4 | 424 | { |
b8af64db | 425 | /* The prompt exited nonlocally. */ |
747022e4 | 426 | proc = handler; |
572eef50 | 427 | args = scm_i_prompt_pop_abort_args_x (scm_the_vm ()); |
747022e4 AW |
428 | goto apply_proc; |
429 | } | |
430 | ||
1773bc7d | 431 | res = scm_call_0 (eval (CADR (mx), env)); |
9ede013f | 432 | scm_dynstack_pop (&SCM_I_CURRENT_THREAD->dynstack); |
747022e4 AW |
433 | return res; |
434 | } | |
435 | ||
b7742c6b AW |
436 | default: |
437 | abort (); | |
438 | } | |
910b5125 DH |
439 | } |
440 | ||
b7742c6b | 441 | \f |
2a6f7afe | 442 | |
b7742c6b AW |
443 | /* Simple procedure calls |
444 | */ | |
2a6f7afe | 445 | |
b7742c6b AW |
446 | SCM |
447 | scm_call_0 (SCM proc) | |
448 | { | |
bf5a05f2 | 449 | return scm_c_vm_run (scm_the_vm (), proc, NULL, 0); |
0f2d19dd JB |
450 | } |
451 | ||
b7742c6b AW |
452 | SCM |
453 | scm_call_1 (SCM proc, SCM arg1) | |
212e58ed | 454 | { |
bf5a05f2 | 455 | return scm_c_vm_run (scm_the_vm (), proc, &arg1, 1); |
b7742c6b | 456 | } |
212e58ed | 457 | |
b7742c6b AW |
458 | SCM |
459 | scm_call_2 (SCM proc, SCM arg1, SCM arg2) | |
460 | { | |
bf5a05f2 AW |
461 | SCM args[] = { arg1, arg2 }; |
462 | return scm_c_vm_run (scm_the_vm (), proc, args, 2); | |
212e58ed DH |
463 | } |
464 | ||
b7742c6b AW |
465 | SCM |
466 | scm_call_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3) | |
0f2d19dd | 467 | { |
bf5a05f2 AW |
468 | SCM args[] = { arg1, arg2, arg3 }; |
469 | return scm_c_vm_run (scm_the_vm (), proc, args, 3); | |
0f2d19dd JB |
470 | } |
471 | ||
b7742c6b AW |
472 | SCM |
473 | scm_call_4 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4) | |
212e58ed | 474 | { |
bf5a05f2 AW |
475 | SCM args[] = { arg1, arg2, arg3, arg4 }; |
476 | return scm_c_vm_run (scm_the_vm (), proc, args, 4); | |
212e58ed DH |
477 | } |
478 | ||
f32e67be AW |
479 | SCM |
480 | scm_call_5 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4, SCM arg5) | |
481 | { | |
482 | SCM args[] = { arg1, arg2, arg3, arg4, arg5 }; | |
483 | return scm_c_vm_run (scm_the_vm (), proc, args, 5); | |
484 | } | |
485 | ||
486 | SCM | |
487 | scm_call_6 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4, SCM arg5, | |
488 | SCM arg6) | |
489 | { | |
490 | SCM args[] = { arg1, arg2, arg3, arg4, arg5, arg6 }; | |
491 | return scm_c_vm_run (scm_the_vm (), proc, args, 6); | |
492 | } | |
493 | ||
741b8a23 MW |
494 | SCM |
495 | scm_call_7 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4, SCM arg5, | |
496 | SCM arg6, SCM arg7) | |
497 | { | |
498 | SCM args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 }; | |
499 | return scm_c_vm_run (scm_the_vm (), proc, args, 7); | |
500 | } | |
501 | ||
502 | SCM | |
503 | scm_call_8 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4, SCM arg5, | |
504 | SCM arg6, SCM arg7, SCM arg8) | |
505 | { | |
506 | SCM args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8 }; | |
507 | return scm_c_vm_run (scm_the_vm (), proc, args, 8); | |
508 | } | |
509 | ||
510 | SCM | |
511 | scm_call_9 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4, SCM arg5, | |
512 | SCM arg6, SCM arg7, SCM arg8, SCM arg9) | |
513 | { | |
514 | SCM args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9 }; | |
515 | return scm_c_vm_run (scm_the_vm (), proc, args, 9); | |
516 | } | |
517 | ||
86fd6dff AW |
518 | SCM |
519 | scm_call_n (SCM proc, SCM *argv, size_t nargs) | |
520 | { | |
521 | return scm_c_vm_run (scm_the_vm (), proc, argv, nargs); | |
522 | } | |
523 | ||
741b8a23 | 524 | SCM |
07c2ca0f | 525 | scm_call (SCM proc, ...) |
741b8a23 MW |
526 | { |
527 | va_list argp; | |
528 | SCM *argv = NULL; | |
529 | size_t i, nargs = 0; | |
530 | ||
531 | va_start (argp, proc); | |
532 | while (!SCM_UNBNDP (va_arg (argp, SCM))) | |
533 | nargs++; | |
534 | va_end (argp); | |
535 | ||
536 | argv = alloca (nargs * sizeof (SCM)); | |
537 | va_start (argp, proc); | |
538 | for (i = 0; i < nargs; i++) | |
539 | argv[i] = va_arg (argp, SCM); | |
540 | va_end (argp); | |
541 | ||
542 | return scm_c_vm_run (scm_the_vm (), proc, argv, nargs); | |
543 | } | |
544 | ||
b7742c6b | 545 | /* Simple procedure applies |
9fbee57e | 546 | */ |
cc56ba80 | 547 | |
b7742c6b AW |
548 | SCM |
549 | scm_apply_0 (SCM proc, SCM args) | |
550 | { | |
551 | return scm_apply (proc, args, SCM_EOL); | |
0f572ba7 DH |
552 | } |
553 | ||
b7742c6b AW |
554 | SCM |
555 | scm_apply_1 (SCM proc, SCM arg1, SCM args) | |
0f572ba7 | 556 | { |
b7742c6b | 557 | return scm_apply (proc, scm_cons (arg1, args), SCM_EOL); |
8ae95199 DH |
558 | } |
559 | ||
b7742c6b AW |
560 | SCM |
561 | scm_apply_2 (SCM proc, SCM arg1, SCM arg2, SCM args) | |
0f2d19dd | 562 | { |
b7742c6b | 563 | return scm_apply (proc, scm_cons2 (arg1, arg2, args), SCM_EOL); |
0f2d19dd JB |
564 | } |
565 | ||
b7742c6b AW |
566 | SCM |
567 | scm_apply_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM args) | |
212e58ed | 568 | { |
b7742c6b AW |
569 | return scm_apply (proc, scm_cons (arg1, scm_cons2 (arg2, arg3, args)), |
570 | SCM_EOL); | |
212e58ed DH |
571 | } |
572 | ||
b8229a3b | 573 | |
b7742c6b AW |
574 | SCM |
575 | scm_map (SCM proc, SCM arg1, SCM args) | |
0f2d19dd | 576 | { |
a2230b65 | 577 | static SCM var = SCM_BOOL_F; |
0f2d19dd | 578 | |
a2230b65 AW |
579 | if (scm_is_false (var)) |
580 | var = scm_private_variable (scm_the_root_module (), | |
581 | scm_from_latin1_symbol ("map")); | |
302c12b4 | 582 | |
a2230b65 AW |
583 | return scm_apply (scm_variable_ref (var), |
584 | scm_cons (proc, scm_cons (arg1, args)), SCM_EOL); | |
585 | } | |
d6754c23 | 586 | |
b7742c6b AW |
587 | SCM |
588 | scm_for_each (SCM proc, SCM arg1, SCM args) | |
0f2d19dd | 589 | { |
a2230b65 AW |
590 | static SCM var = SCM_BOOL_F; |
591 | ||
592 | if (scm_is_false (var)) | |
593 | var = scm_private_variable (scm_the_root_module (), | |
594 | scm_from_latin1_symbol ("for-each")); | |
595 | ||
596 | return scm_apply (scm_variable_ref (var), | |
597 | scm_cons (proc, scm_cons (arg1, args)), SCM_EOL); | |
b7742c6b | 598 | } |
71560395 | 599 | |
71560395 | 600 | |
5f161164 AW |
601 | static SCM |
602 | scm_c_primitive_eval (SCM exp) | |
b7742c6b | 603 | { |
a310a1d1 | 604 | if (!SCM_EXPANDED_P (exp)) |
4f692ace | 605 | exp = scm_call_1 (scm_current_module_transformer (), exp); |
a310a1d1 | 606 | return eval (scm_memoize_expression (exp), SCM_EOL); |
b7742c6b | 607 | } |
5f161164 AW |
608 | |
609 | static SCM var_primitive_eval; | |
610 | SCM | |
611 | scm_primitive_eval (SCM exp) | |
612 | { | |
613 | return scm_c_vm_run (scm_the_vm (), scm_variable_ref (var_primitive_eval), | |
614 | &exp, 1); | |
615 | } | |
71560395 | 616 | |
b7742c6b AW |
617 | |
618 | /* Eval does not take the second arg optionally. This is intentional | |
619 | * in order to be R5RS compatible, and to prepare for the new module | |
620 | * system, where we would like to make the choice of evaluation | |
621 | * environment explicit. */ | |
622 | ||
623 | SCM_DEFINE (scm_eval, "eval", 2, 0, 0, | |
624 | (SCM exp, SCM module_or_state), | |
625 | "Evaluate @var{exp}, a list representing a Scheme expression,\n" | |
626 | "in the top-level environment specified by\n" | |
627 | "@var{module_or_state}.\n" | |
628 | "While @var{exp} is evaluated (using @code{primitive-eval}),\n" | |
629 | "@var{module_or_state} is made the current module when\n" | |
630 | "it is a module, or the current dynamic state when it is\n" | |
631 | "a dynamic state." | |
632 | "Example: (eval '(+ 1 2) (interaction-environment))") | |
633 | #define FUNC_NAME s_scm_eval | |
634 | { | |
635 | SCM res; | |
636 | ||
637 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
638 | if (scm_is_dynamic_state (module_or_state)) | |
639 | scm_dynwind_current_dynamic_state (module_or_state); | |
640 | else if (scm_module_system_booted_p) | |
641 | { | |
642 | SCM_VALIDATE_MODULE (2, module_or_state); | |
643 | scm_dynwind_current_module (module_or_state); | |
71560395 | 644 | } |
b7742c6b | 645 | /* otherwise if the module system isn't booted, ignore the module arg */ |
71560395 | 646 | |
b7742c6b AW |
647 | res = scm_primitive_eval (exp); |
648 | ||
649 | scm_dynwind_end (); | |
650 | return res; | |
651 | } | |
652 | #undef FUNC_NAME | |
71560395 AW |
653 | |
654 | ||
b7742c6b | 655 | static SCM f_apply; |
71560395 AW |
656 | |
657 | /* Apply a function to a list of arguments. | |
658 | ||
659 | This function is exported to the Scheme level as taking two | |
660 | required arguments and a tail argument, as if it were: | |
661 | (lambda (proc arg1 . args) ...) | |
662 | Thus, if you just have a list of arguments to pass to a procedure, | |
663 | pass the list as ARG1, and '() for ARGS. If you have some fixed | |
664 | args, pass the first as ARG1, then cons any remaining fixed args | |
665 | onto the front of your argument list, and pass that as ARGS. */ | |
666 | ||
667 | SCM | |
668 | scm_apply (SCM proc, SCM arg1, SCM args) | |
669 | { | |
b7742c6b | 670 | /* Fix things up so that args contains all args. */ |
71560395 | 671 | if (scm_is_null (args)) |
b7742c6b | 672 | args = arg1; |
71560395 | 673 | else |
b7742c6b | 674 | args = scm_cons_star (arg1, args); |
71560395 | 675 | |
ea9f4f4b | 676 | return scm_call_with_vm (scm_the_vm (), proc, args); |
b7742c6b | 677 | } |
434f2f7a | 678 | |
7572ee52 AW |
679 | static void |
680 | prepare_boot_closure_env_for_apply (SCM proc, SCM args, | |
681 | SCM *out_body, SCM *out_env) | |
314b8716 | 682 | { |
8f9c5b58 AW |
683 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (proc); |
684 | SCM env = BOOT_CLOSURE_ENV (proc); | |
dc3e203e | 685 | |
8f9c5b58 AW |
686 | if (BOOT_CLOSURE_IS_FIXED (proc) |
687 | || (BOOT_CLOSURE_IS_REST (proc) | |
688 | && !BOOT_CLOSURE_HAS_REST_ARGS (proc))) | |
689 | { | |
690 | if (SCM_UNLIKELY (scm_ilength (args) != nreq)) | |
691 | scm_wrong_num_args (proc); | |
692 | for (; scm_is_pair (args); args = CDR (args)) | |
693 | env = scm_cons (CAR (args), env); | |
7572ee52 AW |
694 | *out_body = BOOT_CLOSURE_BODY (proc); |
695 | *out_env = env; | |
8f9c5b58 AW |
696 | } |
697 | else if (BOOT_CLOSURE_IS_REST (proc)) | |
314b8716 AW |
698 | { |
699 | if (SCM_UNLIKELY (scm_ilength (args) < nreq)) | |
8f9c5b58 | 700 | scm_wrong_num_args (proc); |
314b8716 | 701 | for (; nreq; nreq--, args = CDR (args)) |
8f9c5b58 AW |
702 | env = scm_cons (CAR (args), env); |
703 | env = scm_cons (args, env); | |
7572ee52 AW |
704 | *out_body = BOOT_CLOSURE_BODY (proc); |
705 | *out_env = env; | |
314b8716 AW |
706 | } |
707 | else | |
d8a071fc AW |
708 | { |
709 | int i, argc, nreq, nopt; | |
710 | SCM body, rest, kw, inits, alt; | |
dc3e203e | 711 | SCM mx = BOOT_CLOSURE_CODE (proc); |
d8a071fc | 712 | |
7572ee52 | 713 | loop: |
dc3e203e | 714 | BOOT_CLOSURE_PARSE_FULL (mx, body, nargs, rest, nopt, kw, inits, alt); |
d8a071fc AW |
715 | |
716 | argc = scm_ilength (args); | |
717 | if (argc < nreq) | |
718 | { | |
719 | if (scm_is_true (alt)) | |
7572ee52 | 720 | { |
dc3e203e | 721 | mx = alt; |
7572ee52 AW |
722 | goto loop; |
723 | } | |
d8a071fc AW |
724 | else |
725 | scm_wrong_num_args (proc); | |
726 | } | |
727 | if (scm_is_false (kw) && argc > nreq + nopt && scm_is_false (rest)) | |
728 | { | |
729 | if (scm_is_true (alt)) | |
7572ee52 | 730 | { |
dc3e203e | 731 | mx = alt; |
7572ee52 AW |
732 | goto loop; |
733 | } | |
d8a071fc AW |
734 | else |
735 | scm_wrong_num_args (proc); | |
736 | } | |
737 | ||
738 | for (i = 0; i < nreq; i++, args = CDR (args)) | |
739 | env = scm_cons (CAR (args), env); | |
740 | ||
741 | if (scm_is_false (kw)) | |
742 | { | |
743 | /* Optional args (possibly), but no keyword args. */ | |
744 | for (; i < argc && i < nreq + nopt; | |
745 | i++, args = CDR (args)) | |
746 | { | |
747 | env = scm_cons (CAR (args), env); | |
748 | inits = CDR (inits); | |
749 | } | |
750 | ||
751 | for (; i < nreq + nopt; i++, inits = CDR (inits)) | |
f3a9a51d | 752 | env = scm_cons (EVAL1 (CAR (inits), env), env); |
d8a071fc AW |
753 | |
754 | if (scm_is_true (rest)) | |
755 | env = scm_cons (args, env); | |
756 | } | |
757 | else | |
758 | { | |
759 | SCM aok; | |
760 | ||
761 | aok = CAR (kw); | |
762 | kw = CDR (kw); | |
763 | ||
764 | /* Keyword args. As before, but stop at the first keyword. */ | |
765 | for (; i < argc && i < nreq + nopt && !scm_is_keyword (CAR (args)); | |
766 | i++, args = CDR (args), inits = CDR (inits)) | |
767 | env = scm_cons (CAR (args), env); | |
768 | ||
769 | for (; i < nreq + nopt; i++, inits = CDR (inits)) | |
f3a9a51d | 770 | env = scm_cons (EVAL1 (CAR (inits), env), env); |
d8a071fc AW |
771 | |
772 | if (scm_is_true (rest)) | |
773 | { | |
774 | env = scm_cons (args, env); | |
775 | i++; | |
776 | } | |
581f410f AW |
777 | else if (scm_is_true (alt) |
778 | && scm_is_pair (args) && !scm_is_keyword (CAR (args))) | |
779 | { | |
780 | /* Too many positional args, no rest arg, and we have an | |
781 | alternate clause. */ | |
782 | mx = alt; | |
783 | goto loop; | |
784 | } | |
d8a071fc AW |
785 | |
786 | /* Now fill in env with unbound values, limn the rest of the args for | |
787 | keywords, and fill in unbound values with their inits. */ | |
788 | { | |
789 | int imax = i - 1; | |
790 | int kw_start_idx = i; | |
791 | SCM walk, k, v; | |
792 | for (walk = kw; scm_is_pair (walk); walk = CDR (walk)) | |
793 | if (SCM_I_INUM (CDAR (walk)) > imax) | |
794 | imax = SCM_I_INUM (CDAR (walk)); | |
795 | for (; i <= imax; i++) | |
796 | env = scm_cons (SCM_UNDEFINED, env); | |
797 | ||
798 | if (scm_is_pair (args) && scm_is_pair (CDR (args))) | |
799 | for (; scm_is_pair (args) && scm_is_pair (CDR (args)); | |
800 | args = CDR (args)) | |
801 | { | |
802 | k = CAR (args); v = CADR (args); | |
803 | if (!scm_is_keyword (k)) | |
804 | { | |
805 | if (scm_is_true (rest)) | |
806 | continue; | |
807 | else | |
808 | break; | |
809 | } | |
810 | for (walk = kw; scm_is_pair (walk); walk = CDR (walk)) | |
811 | if (scm_is_eq (k, CAAR (walk))) | |
812 | { | |
813 | /* Well... ok, list-set! isn't the nicest interface, but | |
814 | hey. */ | |
815 | int iset = imax - SCM_I_INUM (CDAR (walk)); | |
816 | scm_list_set_x (env, SCM_I_MAKINUM (iset), v); | |
817 | args = CDR (args); | |
818 | break; | |
819 | } | |
820 | if (scm_is_null (walk) && scm_is_false (aok)) | |
821 | error_unrecognized_keyword (proc); | |
822 | } | |
823 | if (scm_is_pair (args) && scm_is_false (rest)) | |
824 | error_invalid_keyword (proc); | |
825 | ||
826 | /* Now fill in unbound values, evaluating init expressions in their | |
827 | appropriate environment. */ | |
828 | for (i = imax - kw_start_idx; scm_is_pair (inits); i--, inits = CDR (inits)) | |
829 | { | |
830 | SCM tail = scm_list_tail (env, SCM_I_MAKINUM (i)); | |
831 | if (SCM_UNBNDP (CAR (tail))) | |
f3a9a51d | 832 | SCM_SETCAR (tail, EVAL1 (CAR (inits), CDR (tail))); |
d8a071fc AW |
833 | } |
834 | } | |
835 | } | |
8f9c5b58 | 836 | |
dc3e203e | 837 | *out_body = body; |
7572ee52 AW |
838 | *out_env = env; |
839 | } | |
8f9c5b58 AW |
840 | } |
841 | ||
7572ee52 | 842 | static void |
8f9c5b58 | 843 | prepare_boot_closure_env_for_eval (SCM proc, unsigned int argc, |
7572ee52 | 844 | SCM exps, SCM *out_body, SCM *inout_env) |
8f9c5b58 AW |
845 | { |
846 | int nreq = BOOT_CLOSURE_NUM_REQUIRED_ARGS (proc); | |
847 | SCM new_env = BOOT_CLOSURE_ENV (proc); | |
848 | if (BOOT_CLOSURE_IS_FIXED (proc) | |
849 | || (BOOT_CLOSURE_IS_REST (proc) | |
850 | && !BOOT_CLOSURE_HAS_REST_ARGS (proc))) | |
314b8716 | 851 | { |
8f9c5b58 | 852 | for (; scm_is_pair (exps); exps = CDR (exps), nreq--) |
f3a9a51d AW |
853 | new_env = scm_cons (EVAL1 (CAR (exps), *inout_env), |
854 | new_env); | |
8f9c5b58 AW |
855 | if (SCM_UNLIKELY (nreq != 0)) |
856 | scm_wrong_num_args (proc); | |
7572ee52 AW |
857 | *out_body = BOOT_CLOSURE_BODY (proc); |
858 | *inout_env = new_env; | |
314b8716 | 859 | } |
8f9c5b58 AW |
860 | else if (BOOT_CLOSURE_IS_REST (proc)) |
861 | { | |
862 | if (SCM_UNLIKELY (argc < nreq)) | |
863 | scm_wrong_num_args (proc); | |
864 | for (; nreq; nreq--, exps = CDR (exps)) | |
f3a9a51d AW |
865 | new_env = scm_cons (EVAL1 (CAR (exps), *inout_env), |
866 | new_env); | |
8f9c5b58 AW |
867 | { |
868 | SCM rest = SCM_EOL; | |
869 | for (; scm_is_pair (exps); exps = CDR (exps)) | |
f3a9a51d | 870 | rest = scm_cons (EVAL1 (CAR (exps), *inout_env), rest); |
8f9c5b58 AW |
871 | new_env = scm_cons (scm_reverse (rest), |
872 | new_env); | |
873 | } | |
7572ee52 AW |
874 | *out_body = BOOT_CLOSURE_BODY (proc); |
875 | *inout_env = new_env; | |
8f9c5b58 AW |
876 | } |
877 | else | |
d8a071fc AW |
878 | { |
879 | SCM args = SCM_EOL; | |
880 | for (; scm_is_pair (exps); exps = CDR (exps)) | |
f3a9a51d | 881 | args = scm_cons (EVAL1 (CAR (exps), *inout_env), args); |
7572ee52 AW |
882 | args = scm_reverse_x (args, SCM_UNDEFINED); |
883 | prepare_boot_closure_env_for_apply (proc, args, out_body, inout_env); | |
d8a071fc | 884 | } |
8f9c5b58 AW |
885 | } |
886 | ||
887 | static SCM | |
888 | boot_closure_apply (SCM closure, SCM args) | |
889 | { | |
7572ee52 AW |
890 | SCM body, env; |
891 | prepare_boot_closure_env_for_apply (closure, args, &body, &env); | |
892 | return eval (body, env); | |
314b8716 AW |
893 | } |
894 | ||
895 | static int | |
896 | boot_closure_print (SCM closure, SCM port, scm_print_state *pstate) | |
897 | { | |
898 | SCM args; | |
0607ebbf | 899 | scm_puts_unlocked ("#<boot-closure ", port); |
fdecb44f | 900 | scm_uintprint (SCM_UNPACK (closure), 16, port); |
0607ebbf | 901 | scm_putc_unlocked (' ', port); |
314b8716 | 902 | args = scm_make_list (scm_from_int (BOOT_CLOSURE_NUM_REQUIRED_ARGS (closure)), |
4a655e50 | 903 | scm_from_latin1_symbol ("_")); |
8f9c5b58 | 904 | if (!BOOT_CLOSURE_IS_FIXED (closure) && BOOT_CLOSURE_HAS_REST_ARGS (closure)) |
4a655e50 | 905 | args = scm_cons_star (scm_from_latin1_symbol ("_"), args); |
7572ee52 | 906 | /* FIXME: optionals and rests */ |
314b8716 | 907 | scm_display (args, port); |
0607ebbf | 908 | scm_putc_unlocked ('>', port); |
314b8716 AW |
909 | return 1; |
910 | } | |
911 | ||
0f2d19dd JB |
912 | void |
913 | scm_init_eval () | |
0f2d19dd | 914 | { |
5f161164 AW |
915 | SCM primitive_eval; |
916 | ||
df9ca8d8 | 917 | f_apply = scm_c_define_gsubr ("apply", 2, 0, 1, scm_apply); |
86d31dfe | 918 | |
314b8716 AW |
919 | scm_tc16_boot_closure = scm_make_smob_type ("boot-closure", 0); |
920 | scm_set_smob_apply (scm_tc16_boot_closure, boot_closure_apply, 0, 0, 1); | |
921 | scm_set_smob_print (scm_tc16_boot_closure, boot_closure_print); | |
922 | ||
5f161164 AW |
923 | primitive_eval = scm_c_make_gsubr ("primitive-eval", 1, 0, 0, |
924 | scm_c_primitive_eval); | |
925 | var_primitive_eval = scm_define (SCM_SUBR_NAME (primitive_eval), | |
926 | primitive_eval); | |
927 | ||
a0599745 | 928 | #include "libguile/eval.x" |
0f2d19dd | 929 | } |
0f2d19dd | 930 | |
89e00824 ML |
931 | /* |
932 | Local Variables: | |
933 | c-file-style: "gnu" | |
934 | End: | |
935 | */ | |
62560650 | 936 |