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510ca126 | 1 | /* Copyright (C) 2001, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
17e90c5e | 2 | * |
560b9c25 | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
17e90c5e | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
560b9c25 AW |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
17e90c5e | 12 | * |
560b9c25 AW |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
560b9c25 | 17 | */ |
17e90c5e | 18 | |
13c47753 AW |
19 | #if HAVE_CONFIG_H |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
17e90c5e | 23 | #include <string.h> |
560b9c25 | 24 | #include "_scm.h" |
17e90c5e | 25 | #include "instructions.h" |
8e367074 | 26 | #include "modules.h" |
17e90c5e | 27 | #include "programs.h" |
6f6f0dac LC |
28 | #include "procprop.h" /* scm_sym_name */ |
29 | #include "srcprop.h" /* scm_sym_filename */ | |
17e90c5e KN |
30 | #include "vm.h" |
31 | ||
32 | \f | |
e6fea618 | 33 | static SCM write_program = SCM_BOOL_F; |
17e90c5e | 34 | |
53e28ed9 | 35 | SCM_DEFINE (scm_make_program, "make-program", 1, 2, 0, |
57ab0671 | 36 | (SCM objcode, SCM objtable, SCM free_variables), |
53e28ed9 AW |
37 | "") |
38 | #define FUNC_NAME s_scm_make_program | |
17e90c5e | 39 | { |
53e28ed9 AW |
40 | SCM_VALIDATE_OBJCODE (1, objcode); |
41 | if (SCM_UNLIKELY (SCM_UNBNDP (objtable))) | |
42 | objtable = SCM_BOOL_F; | |
43 | else if (scm_is_true (objtable)) | |
44 | SCM_VALIDATE_VECTOR (2, objtable); | |
20d47c39 | 45 | |
6f16379e AW |
46 | if (SCM_UNBNDP (free_variables) || scm_is_false (free_variables)) |
47 | { | |
48 | SCM ret = scm_words (scm_tc7_program, 3); | |
49 | SCM_SET_CELL_OBJECT_1 (ret, objcode); | |
50 | SCM_SET_CELL_OBJECT_2 (ret, objtable); | |
51 | return ret; | |
52 | } | |
53 | else | |
54 | { | |
55 | size_t i, len; | |
56 | SCM ret; | |
57 | SCM_VALIDATE_VECTOR (3, free_variables); | |
58 | len = scm_c_vector_length (free_variables); | |
59 | if (SCM_UNLIKELY (len >> 16)) | |
60 | SCM_OUT_OF_RANGE (3, free_variables); | |
61 | ret = scm_words (scm_tc7_program | (len<<16), 3 + len); | |
62 | SCM_SET_CELL_OBJECT_1 (ret, objcode); | |
63 | SCM_SET_CELL_OBJECT_2 (ret, objtable); | |
64 | for (i = 0; i < len; i++) | |
65 | SCM_SET_CELL_OBJECT (ret, 3+i, | |
66 | SCM_SIMPLE_VECTOR_REF (free_variables, i)); | |
67 | return ret; | |
68 | } | |
17e90c5e KN |
69 | } |
70 | #undef FUNC_NAME | |
71 | ||
510ca126 AW |
72 | SCM_DEFINE (scm_make_rtl_program, "make-rtl-program", 1, 2, 0, |
73 | (SCM bytevector, SCM byte_offset, SCM free_variables), | |
74 | "") | |
75 | #define FUNC_NAME s_scm_make_rtl_program | |
76 | { | |
77 | scm_t_uint8 *code; | |
78 | scm_t_uint32 offset; | |
79 | ||
80 | if (!scm_is_bytevector (bytevector)) | |
81 | scm_wrong_type_arg (FUNC_NAME, 1, bytevector); | |
82 | if (SCM_UNBNDP (byte_offset)) | |
83 | offset = 0; | |
84 | else | |
85 | { | |
86 | offset = scm_to_uint32 (byte_offset); | |
87 | if (offset > SCM_BYTEVECTOR_LENGTH (bytevector)) | |
88 | SCM_OUT_OF_RANGE (2, byte_offset); | |
89 | } | |
90 | ||
91 | code = (scm_t_uint8*) SCM_BYTEVECTOR_CONTENTS (bytevector) + offset; | |
92 | if (((scm_t_uintptr) code) % 4) | |
93 | SCM_OUT_OF_RANGE (2, byte_offset); | |
94 | ||
95 | if (SCM_UNBNDP (free_variables) || scm_is_false (free_variables)) | |
96 | return scm_cell (scm_tc7_rtl_program, (scm_t_bits) code); | |
97 | else | |
98 | abort (); | |
99 | } | |
100 | #undef FUNC_NAME | |
101 | ||
102 | SCM_DEFINE (scm_rtl_program_code, "rtl-program-code", 1, 0, 0, | |
103 | (SCM program), | |
104 | "") | |
105 | #define FUNC_NAME s_scm_rtl_program_code | |
106 | { | |
107 | SCM_VALIDATE_RTL_PROGRAM (1, program); | |
108 | ||
109 | /* FIXME: we need scm_from_uintptr (). */ | |
110 | return scm_from_size_t ((size_t) SCM_RTL_PROGRAM_CODE (program)); | |
111 | } | |
112 | #undef FUNC_NAME | |
113 | ||
e65f80af AW |
114 | SCM |
115 | scm_i_rtl_program_name (SCM program) | |
510ca126 | 116 | { |
e65f80af AW |
117 | static SCM rtl_program_name = SCM_BOOL_F; |
118 | ||
119 | if (scm_is_false (rtl_program_name) && scm_module_system_booted_p) | |
120 | rtl_program_name = | |
121 | scm_c_private_variable ("system vm program", "rtl-program-name"); | |
122 | ||
123 | return scm_call_1 (scm_variable_ref (rtl_program_name), program); | |
510ca126 AW |
124 | } |
125 | ||
bf8328ec AW |
126 | SCM |
127 | scm_i_rtl_program_documentation (SCM program) | |
128 | { | |
129 | static SCM rtl_program_documentation = SCM_BOOL_F; | |
130 | ||
131 | if (scm_is_false (rtl_program_documentation) && scm_module_system_booted_p) | |
132 | rtl_program_documentation = | |
133 | scm_c_private_variable ("system vm program", | |
134 | "rtl-program-documentation"); | |
135 | ||
136 | return scm_call_1 (scm_variable_ref (rtl_program_documentation), program); | |
137 | } | |
138 | ||
c4c098e3 AW |
139 | SCM |
140 | scm_i_rtl_program_properties (SCM program) | |
141 | { | |
142 | static SCM rtl_program_properties = SCM_BOOL_F; | |
143 | ||
144 | if (scm_is_false (rtl_program_properties) && scm_module_system_booted_p) | |
145 | rtl_program_properties = | |
146 | scm_c_private_variable ("system vm program", "rtl-program-properties"); | |
147 | ||
148 | return scm_call_1 (scm_variable_ref (rtl_program_properties), program); | |
149 | } | |
150 | ||
2fb924f6 AW |
151 | void |
152 | scm_i_program_print (SCM program, SCM port, scm_print_state *pstate) | |
e6fea618 | 153 | { |
0ba8bb71 AW |
154 | static int print_error = 0; |
155 | ||
5c8cefe5 | 156 | if (scm_is_false (write_program) && scm_module_system_booted_p) |
eb2bc00f AW |
157 | write_program = scm_c_private_variable ("system vm program", |
158 | "write-program"); | |
e6fea618 | 159 | |
1d1cae0e AW |
160 | if (SCM_PROGRAM_IS_CONTINUATION (program)) |
161 | { | |
162 | /* twingliness */ | |
0607ebbf | 163 | scm_puts_unlocked ("#<continuation ", port); |
76e38162 | 164 | scm_uintprint (SCM_UNPACK (program), 16, port); |
0607ebbf | 165 | scm_putc_unlocked ('>', port); |
1d1cae0e | 166 | } |
5c606217 | 167 | else if (SCM_PROGRAM_IS_PARTIAL_CONTINUATION (program)) |
2150e9a8 AW |
168 | { |
169 | /* twingliness */ | |
0607ebbf | 170 | scm_puts_unlocked ("#<partial-continuation ", port); |
2150e9a8 | 171 | scm_uintprint (SCM_UNPACK (program), 16, port); |
0607ebbf | 172 | scm_putc_unlocked ('>', port); |
2150e9a8 | 173 | } |
1d1cae0e | 174 | else if (scm_is_false (write_program) || print_error) |
2fb924f6 | 175 | { |
e65f80af AW |
176 | if (SCM_RTL_PROGRAM_P (program)) |
177 | { | |
178 | scm_puts_unlocked ("#<rtl-program ", port); | |
179 | scm_uintprint (SCM_UNPACK (program), 16, port); | |
180 | scm_putc_unlocked (' ', port); | |
181 | scm_uintprint ((scm_t_uintptr) SCM_RTL_PROGRAM_CODE (program), 16, port); | |
182 | scm_putc_unlocked ('>', port); | |
183 | } | |
184 | else | |
185 | { | |
186 | scm_puts_unlocked ("#<program ", port); | |
187 | scm_uintprint (SCM_UNPACK (program), 16, port); | |
188 | scm_putc_unlocked ('>', port); | |
189 | } | |
2fb924f6 AW |
190 | } |
191 | else | |
192 | { | |
193 | print_error = 1; | |
194 | scm_call_2 (SCM_VARIABLE_REF (write_program), program, port); | |
195 | print_error = 0; | |
196 | } | |
e6fea618 AW |
197 | } |
198 | ||
17e90c5e KN |
199 | \f |
200 | /* | |
201 | * Scheme interface | |
202 | */ | |
203 | ||
204 | SCM_DEFINE (scm_program_p, "program?", 1, 0, 0, | |
205 | (SCM obj), | |
206 | "") | |
207 | #define FUNC_NAME s_scm_program_p | |
208 | { | |
5c8cefe5 | 209 | return scm_from_bool (SCM_PROGRAM_P (obj)); |
17e90c5e KN |
210 | } |
211 | #undef FUNC_NAME | |
212 | ||
510ca126 AW |
213 | SCM_DEFINE (scm_rtl_program_p, "rtl-program?", 1, 0, 0, |
214 | (SCM obj), | |
215 | "") | |
216 | #define FUNC_NAME s_scm_rtl_program_p | |
217 | { | |
218 | return scm_from_bool (SCM_RTL_PROGRAM_P (obj)); | |
219 | } | |
220 | #undef FUNC_NAME | |
221 | ||
ac99cb0c KN |
222 | SCM_DEFINE (scm_program_base, "program-base", 1, 0, 0, |
223 | (SCM program), | |
224 | "") | |
225 | #define FUNC_NAME s_scm_program_base | |
226 | { | |
3dbbe28d LC |
227 | const struct scm_objcode *c_objcode; |
228 | ||
ac99cb0c KN |
229 | SCM_VALIDATE_PROGRAM (1, program); |
230 | ||
3dbbe28d | 231 | c_objcode = SCM_PROGRAM_DATA (program); |
3d27ef4b | 232 | return scm_from_unsigned_integer ((scm_t_bits) SCM_C_OBJCODE_BASE (c_objcode)); |
ac99cb0c KN |
233 | } |
234 | #undef FUNC_NAME | |
235 | ||
53e28ed9 AW |
236 | SCM_DEFINE (scm_program_objects, "program-objects", 1, 0, 0, |
237 | (SCM program), | |
238 | "") | |
239 | #define FUNC_NAME s_scm_program_objects | |
240 | { | |
241 | SCM_VALIDATE_PROGRAM (1, program); | |
242 | return SCM_PROGRAM_OBJTABLE (program); | |
243 | } | |
244 | #undef FUNC_NAME | |
245 | ||
246 | SCM_DEFINE (scm_program_module, "program-module", 1, 0, 0, | |
247 | (SCM program), | |
248 | "") | |
249 | #define FUNC_NAME s_scm_program_module | |
250 | { | |
7884975a | 251 | SCM objs, mod; |
53e28ed9 AW |
252 | SCM_VALIDATE_PROGRAM (1, program); |
253 | objs = SCM_PROGRAM_OBJTABLE (program); | |
7884975a AW |
254 | /* If a program is the result of compiling GLIL to assembly, then if |
255 | it has an objtable, the first entry will be a module. But some | |
256 | programs are hand-coded trampolines, like boot programs and | |
257 | primitives and the like. So if a program happens to have a | |
258 | non-module in the first slot of the objtable, assume that it is | |
259 | such a trampoline, and just return #f for the module. */ | |
260 | mod = scm_is_true (objs) ? scm_c_vector_ref (objs, 0) : SCM_BOOL_F; | |
261 | return SCM_MODULEP (mod) ? mod : SCM_BOOL_F; | |
53e28ed9 AW |
262 | } |
263 | #undef FUNC_NAME | |
264 | ||
ac99cb0c KN |
265 | SCM_DEFINE (scm_program_meta, "program-meta", 1, 0, 0, |
266 | (SCM program), | |
267 | "") | |
268 | #define FUNC_NAME s_scm_program_meta | |
17e90c5e | 269 | { |
ac47d5f6 AW |
270 | SCM metaobj; |
271 | ||
17e90c5e | 272 | SCM_VALIDATE_PROGRAM (1, program); |
ac47d5f6 AW |
273 | |
274 | metaobj = scm_objcode_meta (SCM_PROGRAM_OBJCODE (program)); | |
275 | if (scm_is_true (metaobj)) | |
31a26df2 AW |
276 | return scm_make_program (metaobj, SCM_PROGRAM_OBJTABLE (program), |
277 | SCM_BOOL_F); | |
ac47d5f6 AW |
278 | else |
279 | return SCM_BOOL_F; | |
17e90c5e KN |
280 | } |
281 | #undef FUNC_NAME | |
282 | ||
e311f5fa AW |
283 | SCM_DEFINE (scm_program_bindings, "program-bindings", 1, 0, 0, |
284 | (SCM program), | |
285 | "") | |
286 | #define FUNC_NAME s_scm_program_bindings | |
9a9f6487 | 287 | { |
e311f5fa AW |
288 | SCM meta; |
289 | ||
290 | SCM_VALIDATE_PROGRAM (1, program); | |
9a9f6487 | 291 | |
53e28ed9 | 292 | meta = scm_program_meta (program); |
2fda0242 | 293 | if (scm_is_false (meta)) |
9a9f6487 | 294 | return SCM_BOOL_F; |
e311f5fa AW |
295 | |
296 | return scm_car (scm_call_0 (meta)); | |
297 | } | |
298 | #undef FUNC_NAME | |
299 | ||
7c540297 | 300 | SCM_DEFINE (scm_program_sources, "%program-sources", 1, 0, 0, |
e311f5fa AW |
301 | (SCM program), |
302 | "") | |
303 | #define FUNC_NAME s_scm_program_sources | |
304 | { | |
028e3d06 | 305 | SCM meta, sources, ret, filename; |
e311f5fa AW |
306 | |
307 | SCM_VALIDATE_PROGRAM (1, program); | |
308 | ||
309 | meta = scm_program_meta (program); | |
9a9f6487 | 310 | if (scm_is_false (meta)) |
e311f5fa AW |
311 | return SCM_EOL; |
312 | ||
028e3d06 AW |
313 | filename = SCM_BOOL_F; |
314 | ret = SCM_EOL; | |
315 | for (sources = scm_cadr (scm_call_0 (meta)); !scm_is_null (sources); | |
316 | sources = scm_cdr (sources)) | |
317 | { | |
318 | SCM x = scm_car (sources); | |
319 | if (scm_is_pair (x)) | |
320 | { | |
321 | if (scm_is_number (scm_car (x))) | |
322 | { | |
323 | SCM addr = scm_car (x); | |
324 | ret = scm_acons (addr, scm_cons (filename, scm_cdr (x)), | |
325 | ret); | |
326 | } | |
327 | else if (scm_is_eq (scm_car (x), scm_sym_filename)) | |
328 | filename = scm_cdr (x); | |
329 | } | |
330 | } | |
331 | return scm_reverse_x (ret, SCM_UNDEFINED); | |
e311f5fa AW |
332 | } |
333 | #undef FUNC_NAME | |
334 | ||
6c6a4439 AW |
335 | SCM_DEFINE (scm_program_arities, "program-arities", 1, 0, 0, |
336 | (SCM program), | |
337 | "") | |
338 | #define FUNC_NAME s_scm_program_arities | |
339 | { | |
340 | SCM meta; | |
341 | ||
342 | SCM_VALIDATE_PROGRAM (1, program); | |
343 | ||
344 | meta = scm_program_meta (program); | |
345 | if (scm_is_false (meta)) | |
346 | return SCM_BOOL_F; | |
347 | ||
348 | return scm_caddr (scm_call_0 (meta)); | |
349 | } | |
350 | #undef FUNC_NAME | |
351 | ||
07e424b7 AW |
352 | SCM |
353 | scm_i_program_properties (SCM program) | |
354 | #define FUNC_NAME "%program-properties" | |
e311f5fa AW |
355 | { |
356 | SCM meta; | |
357 | ||
358 | SCM_VALIDATE_PROGRAM (1, program); | |
359 | ||
360 | meta = scm_program_meta (program); | |
361 | if (scm_is_false (meta)) | |
362 | return SCM_EOL; | |
363 | ||
6c6a4439 | 364 | return scm_cdddr (scm_call_0 (meta)); |
e311f5fa AW |
365 | } |
366 | #undef FUNC_NAME | |
367 | ||
7c540297 AW |
368 | SCM |
369 | scm_program_source (SCM program, SCM ip, SCM sources) | |
b262b74b | 370 | { |
7c540297 | 371 | static SCM program_source = SCM_BOOL_F; |
b262b74b | 372 | |
7c540297 AW |
373 | if (scm_is_false (program_source)) { |
374 | if (!scm_module_system_booted_p) | |
375 | return SCM_BOOL_F; | |
376 | ||
377 | program_source = | |
378 | scm_c_private_variable ("system vm program", "program-source"); | |
379 | } | |
b262b74b | 380 | |
b262b74b | 381 | if (SCM_UNBNDP (sources)) |
7c540297 AW |
382 | return scm_call_2 (scm_variable_ref (program_source), program, ip); |
383 | else | |
384 | return scm_call_3 (scm_variable_ref (program_source), program, ip, sources); | |
028e3d06 | 385 | } |
028e3d06 | 386 | |
6f16379e | 387 | SCM_DEFINE (scm_program_num_free_variables, "program-num-free-variables", 1, 0, 0, |
17e90c5e KN |
388 | (SCM program), |
389 | "") | |
6f16379e AW |
390 | #define FUNC_NAME s_scm_program_num_free_variables |
391 | { | |
ee0a2b51 AW |
392 | if (SCM_RTL_PROGRAM_P (program)) { |
393 | return scm_from_ulong (SCM_RTL_PROGRAM_NUM_FREE_VARIABLES (program)); | |
394 | } | |
395 | ||
6f16379e AW |
396 | SCM_VALIDATE_PROGRAM (1, program); |
397 | return scm_from_ulong (SCM_PROGRAM_NUM_FREE_VARIABLES (program)); | |
398 | } | |
399 | #undef FUNC_NAME | |
400 | ||
401 | SCM_DEFINE (scm_program_free_variable_ref, "program-free-variable-ref", 2, 0, 0, | |
402 | (SCM program, SCM i), | |
403 | "") | |
404 | #define FUNC_NAME s_scm_program_free_variable_ref | |
405 | { | |
406 | unsigned long idx; | |
ee0a2b51 AW |
407 | |
408 | if (SCM_RTL_PROGRAM_P (program)) { | |
409 | SCM_VALIDATE_ULONG_COPY (2, i, idx); | |
410 | if (idx >= SCM_RTL_PROGRAM_NUM_FREE_VARIABLES (program)) | |
411 | SCM_OUT_OF_RANGE (2, i); | |
412 | return SCM_RTL_PROGRAM_FREE_VARIABLE_REF (program, idx); | |
413 | } | |
414 | ||
6f16379e AW |
415 | SCM_VALIDATE_PROGRAM (1, program); |
416 | SCM_VALIDATE_ULONG_COPY (2, i, idx); | |
417 | if (idx >= SCM_PROGRAM_NUM_FREE_VARIABLES (program)) | |
418 | SCM_OUT_OF_RANGE (2, i); | |
419 | return SCM_PROGRAM_FREE_VARIABLE_REF (program, idx); | |
420 | } | |
421 | #undef FUNC_NAME | |
422 | ||
423 | SCM_DEFINE (scm_program_free_variable_set_x, "program-free-variable-set!", 3, 0, 0, | |
424 | (SCM program, SCM i, SCM x), | |
425 | "") | |
426 | #define FUNC_NAME s_scm_program_free_variable_set_x | |
62082959 | 427 | { |
6f16379e | 428 | unsigned long idx; |
ee0a2b51 AW |
429 | |
430 | if (SCM_RTL_PROGRAM_P (program)) { | |
431 | SCM_VALIDATE_ULONG_COPY (2, i, idx); | |
432 | if (idx >= SCM_RTL_PROGRAM_NUM_FREE_VARIABLES (program)) | |
433 | SCM_OUT_OF_RANGE (2, i); | |
434 | SCM_RTL_PROGRAM_FREE_VARIABLE_SET (program, idx, x); | |
435 | return SCM_UNSPECIFIED; | |
436 | } | |
437 | ||
62082959 | 438 | SCM_VALIDATE_PROGRAM (1, program); |
6f16379e AW |
439 | SCM_VALIDATE_ULONG_COPY (2, i, idx); |
440 | if (idx >= SCM_PROGRAM_NUM_FREE_VARIABLES (program)) | |
441 | SCM_OUT_OF_RANGE (2, i); | |
442 | SCM_PROGRAM_FREE_VARIABLE_SET (program, idx, x); | |
443 | return SCM_UNSPECIFIED; | |
62082959 LC |
444 | } |
445 | #undef FUNC_NAME | |
446 | ||
53e28ed9 | 447 | SCM_DEFINE (scm_program_objcode, "program-objcode", 1, 0, 0, |
17e90c5e | 448 | (SCM program), |
53e28ed9 AW |
449 | "Return a @var{program}'s object code.") |
450 | #define FUNC_NAME s_scm_program_objcode | |
17e90c5e KN |
451 | { |
452 | SCM_VALIDATE_PROGRAM (1, program); | |
fa19602c | 453 | |
53e28ed9 | 454 | return SCM_PROGRAM_OBJCODE (program); |
17e90c5e KN |
455 | } |
456 | #undef FUNC_NAME | |
457 | ||
cb2ce548 AW |
458 | /* procedure-minimum-arity support. */ |
459 | static void | |
460 | parse_arity (SCM arity, int *req, int *opt, int *rest) | |
56164a5a | 461 | { |
cb2ce548 | 462 | SCM x = scm_cddr (arity); |
56164a5a | 463 | |
56164a5a AW |
464 | if (scm_is_pair (x)) |
465 | { | |
466 | *req = scm_to_int (scm_car (x)); | |
467 | x = scm_cdr (x); | |
468 | if (scm_is_pair (x)) | |
469 | { | |
470 | *opt = scm_to_int (scm_car (x)); | |
471 | x = scm_cdr (x); | |
472 | if (scm_is_pair (x)) | |
473 | *rest = scm_is_true (scm_car (x)); | |
474 | else | |
475 | *rest = 0; | |
476 | } | |
477 | else | |
478 | *opt = *rest = 0; | |
479 | } | |
480 | else | |
481 | *req = *opt = *rest = 0; | |
cb2ce548 AW |
482 | } |
483 | ||
eb2bc00f AW |
484 | static int |
485 | scm_i_rtl_program_minimum_arity (SCM program, int *req, int *opt, int *rest) | |
486 | { | |
487 | static SCM rtl_program_minimum_arity = SCM_BOOL_F; | |
488 | SCM l; | |
489 | ||
490 | if (scm_is_false (rtl_program_minimum_arity) && scm_module_system_booted_p) | |
491 | rtl_program_minimum_arity = | |
081cf910 | 492 | scm_c_private_variable ("system vm program", |
eb2bc00f AW |
493 | "rtl-program-minimum-arity"); |
494 | ||
495 | l = scm_call_1 (scm_variable_ref (rtl_program_minimum_arity), program); | |
496 | if (scm_is_false (l)) | |
497 | return 0; | |
498 | ||
499 | *req = scm_to_int (scm_car (l)); | |
500 | *opt = scm_to_int (scm_cadr (l)); | |
501 | *rest = scm_is_true (scm_caddr (l)); | |
502 | ||
503 | return 1; | |
504 | } | |
505 | ||
cb2ce548 AW |
506 | int |
507 | scm_i_program_arity (SCM program, int *req, int *opt, int *rest) | |
508 | { | |
509 | SCM arities; | |
510 | ||
eb2bc00f AW |
511 | if (SCM_RTL_PROGRAM_P (program)) |
512 | return scm_i_rtl_program_minimum_arity (program, req, opt, rest); | |
513 | ||
cb2ce548 AW |
514 | arities = scm_program_arities (program); |
515 | if (!scm_is_pair (arities)) | |
516 | return 0; | |
517 | ||
518 | parse_arity (scm_car (arities), req, opt, rest); | |
519 | arities = scm_cdr (arities); | |
520 | ||
521 | for (; scm_is_pair (arities); arities = scm_cdr (arities)) | |
522 | { | |
523 | int thisreq, thisopt, thisrest; | |
524 | ||
525 | parse_arity (scm_car (arities), &thisreq, &thisopt, &thisrest); | |
526 | ||
527 | if (thisreq < *req | |
528 | || (thisreq == *req | |
529 | && ((thisrest && (!*rest || thisopt > *opt)) | |
530 | || (!thisrest && !*rest && thisopt > *opt)))) | |
531 | { | |
532 | *req = thisreq; | |
533 | *opt = thisopt; | |
534 | *rest = thisrest; | |
535 | } | |
536 | } | |
537 | ||
56164a5a AW |
538 | return 1; |
539 | } | |
fa19602c | 540 | |
17e90c5e | 541 | \f |
56164a5a | 542 | |
17e90c5e | 543 | void |
07e56b27 | 544 | scm_bootstrap_programs (void) |
17e90c5e | 545 | { |
44602b08 AW |
546 | scm_c_register_extension ("libguile-" SCM_EFFECTIVE_VERSION, |
547 | "scm_init_programs", | |
60ae5ca2 | 548 | (scm_t_extension_init_func)scm_init_programs, NULL); |
07e56b27 | 549 | } |
17e90c5e | 550 | |
07e56b27 AW |
551 | void |
552 | scm_init_programs (void) | |
553 | { | |
17e90c5e | 554 | #ifndef SCM_MAGIC_SNARFER |
aeeff258 | 555 | #include "libguile/programs.x" |
17e90c5e KN |
556 | #endif |
557 | } | |
558 | ||
559 | /* | |
560 | Local Variables: | |
561 | c-file-style: "gnu" | |
562 | End: | |
563 | */ |