Commit | Line | Data |
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4a655e50 | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011 |
366ecaec | 2 | * Free Software Foundation, Inc. |
6d77c894 | 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. | |
6d77c894 | 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. | |
6d77c894 | 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 | */ |
80662eda MD |
19 | \f |
20 | ||
21 | /* This software is a derivative work of other copyrighted softwares; the | |
22 | * copyright notices of these softwares are placed in the file COPYRIGHTS | |
23 | * | |
24 | * This file is based upon stklos.c from the STk distribution by | |
25 | * Erick Gallesio <eg@unice.fr>. | |
26 | */ | |
27 | ||
dbb605f5 LC |
28 | #ifdef HAVE_CONFIG_H |
29 | # include <config.h> | |
30 | #endif | |
31 | ||
80662eda MD |
32 | #include <stdio.h> |
33 | ||
34 | #include "libguile/_scm.h" | |
35 | #include "libguile/alist.h" | |
4e047c3e | 36 | #include "libguile/async.h" |
539d5410 | 37 | #include "libguile/chars.h" |
80662eda MD |
38 | #include "libguile/debug.h" |
39 | #include "libguile/dynl.h" | |
40 | #include "libguile/dynwind.h" | |
41 | #include "libguile/eval.h" | |
9fdf9fd3 | 42 | #include "libguile/gsubr.h" |
80662eda MD |
43 | #include "libguile/hashtab.h" |
44 | #include "libguile/keywords.h" | |
45 | #include "libguile/macros.h" | |
46 | #include "libguile/modules.h" | |
80662eda MD |
47 | #include "libguile/ports.h" |
48 | #include "libguile/procprop.h" | |
efcebb5b | 49 | #include "libguile/programs.h" |
80662eda | 50 | #include "libguile/random.h" |
fdc28395 | 51 | #include "libguile/root.h" |
80662eda MD |
52 | #include "libguile/smob.h" |
53 | #include "libguile/strings.h" | |
54 | #include "libguile/strports.h" | |
55 | #include "libguile/vectors.h" | |
56 | #include "libguile/weaks.h" | |
efcebb5b | 57 | #include "libguile/vm.h" |
80662eda | 58 | |
ca83b028 | 59 | #include "libguile/validate.h" |
80662eda MD |
60 | #include "libguile/goops.h" |
61 | ||
80662eda MD |
62 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
63 | ||
efcebb5b AW |
64 | /* Port classes */ |
65 | #define SCM_IN_PCLASS_INDEX 0 | |
66 | #define SCM_OUT_PCLASS_INDEX SCM_I_MAX_PORT_TYPE_COUNT | |
67 | #define SCM_INOUT_PCLASS_INDEX (2 * SCM_I_MAX_PORT_TYPE_COUNT) | |
68 | ||
bef95911 AW |
69 | /* this file is a mess. in theory, though, we shouldn't have many SCM references |
70 | -- most of the references should be to vars. */ | |
71 | ||
72 | static SCM var_slot_unbound = SCM_BOOL_F; | |
73 | static SCM var_slot_missing = SCM_BOOL_F; | |
74 | static SCM var_compute_cpl = SCM_BOOL_F; | |
75 | static SCM var_no_applicable_method = SCM_BOOL_F; | |
bef95911 AW |
76 | static SCM var_change_class = SCM_BOOL_F; |
77 | ||
78 | SCM_SYMBOL (sym_slot_unbound, "slot-unbound"); | |
79 | SCM_SYMBOL (sym_slot_missing, "slot-missing"); | |
80 | SCM_SYMBOL (sym_compute_cpl, "compute-cpl"); | |
81 | SCM_SYMBOL (sym_no_applicable_method, "no-applicable-method"); | |
82 | SCM_SYMBOL (sym_memoize_method_x, "memoize-method!"); | |
83 | SCM_SYMBOL (sym_change_class, "change-class"); | |
84 | ||
85 | SCM_VARIABLE (scm_var_make_extended_generic, "make-extended-generic"); | |
86 | ||
87 | ||
80662eda MD |
88 | /* Class redefinition protocol: |
89 | ||
90 | A class is represented by a heap header h1 which points to a | |
91 | malloc:ed memory block m1. | |
92 | ||
93 | When a new version of a class is created, a new header h2 and | |
94 | memory block m2 are allocated. The headers h1 and h2 then switch | |
95 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
96 | bound to h1 will point to the new class at the same time as h2 will | |
7346de61 | 97 | be a handle which the GC will use to free m1. |
80662eda MD |
98 | |
99 | The `redefined' slot of m1 will be set to point to h1. An old | |
7346de61 | 100 | instance will have its class pointer (the CAR of the heap header) |
80662eda MD |
101 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates |
102 | the class modification and the new class pointer can be found via | |
103 | h1. | |
104 | */ | |
105 | ||
0fd7dcd3 MD |
106 | #define TEST_CHANGE_CLASS(obj, class) \ |
107 | { \ | |
108 | class = SCM_CLASS_OF (obj); \ | |
7888309b | 109 | if (scm_is_true (SCM_OBJ_CLASS_REDEF (obj))) \ |
0fd7dcd3 MD |
110 | { \ |
111 | scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj));\ | |
112 | class = SCM_CLASS_OF (obj); \ | |
113 | } \ | |
80662eda MD |
114 | } |
115 | ||
116 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
117 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
118 | ||
119 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
d223c3fc | 120 | #define SCM_GOOPS_UNBOUNDP(x) (scm_is_eq (x, SCM_GOOPS_UNBOUND)) |
80662eda MD |
121 | |
122 | static int goops_loaded_p = 0; | |
92c2555f | 123 | static scm_t_rstate *goops_rstate; |
80662eda | 124 | |
539d5410 MV |
125 | /* These variables are filled in by the object system when loaded. */ |
126 | SCM scm_class_boolean, scm_class_char, scm_class_pair; | |
127 | SCM scm_class_procedure, scm_class_string, scm_class_symbol; | |
ea68d342 | 128 | SCM scm_class_primitive_generic; |
9ea31741 | 129 | SCM scm_class_vector, scm_class_null; |
539d5410 MV |
130 | SCM scm_class_integer, scm_class_real, scm_class_complex, scm_class_fraction; |
131 | SCM scm_class_unknown; | |
80662eda | 132 | SCM scm_class_top, scm_class_object, scm_class_class; |
74b6d6e4 | 133 | SCM scm_class_applicable; |
51f66c91 | 134 | SCM scm_class_applicable_struct, scm_class_applicable_struct_with_setter; |
bbf8d523 | 135 | SCM scm_class_generic, scm_class_generic_with_setter; |
f8af5c6d | 136 | SCM scm_class_accessor; |
bbf8d523 | 137 | SCM scm_class_extended_generic, scm_class_extended_generic_with_setter; |
74b6d6e4 | 138 | SCM scm_class_extended_accessor; |
bbf8d523 | 139 | SCM scm_class_method; |
51f66c91 | 140 | SCM scm_class_accessor_method; |
80662eda | 141 | SCM scm_class_procedure_class; |
51f66c91 | 142 | SCM scm_class_applicable_struct_class; |
80662eda MD |
143 | SCM scm_class_number, scm_class_list; |
144 | SCM scm_class_keyword; | |
145 | SCM scm_class_port, scm_class_input_output_port; | |
146 | SCM scm_class_input_port, scm_class_output_port; | |
80662eda MD |
147 | SCM scm_class_foreign_slot; |
148 | SCM scm_class_self, scm_class_protected; | |
b6cf4d02 AW |
149 | SCM scm_class_hidden, scm_class_opaque, scm_class_read_only; |
150 | SCM scm_class_protected_hidden, scm_class_protected_opaque, scm_class_protected_read_only; | |
80662eda MD |
151 | SCM scm_class_scm; |
152 | SCM scm_class_int, scm_class_float, scm_class_double; | |
153 | ||
e2c2a699 | 154 | static SCM class_foreign; |
9ea31741 AW |
155 | static SCM class_hashtable; |
156 | static SCM class_fluid; | |
157 | static SCM class_dynamic_state; | |
6f3b0cc2 AW |
158 | static SCM class_frame; |
159 | static SCM class_objcode; | |
160 | static SCM class_vm; | |
161 | static SCM class_vm_cont; | |
f826a886 AW |
162 | static SCM class_bytevector; |
163 | static SCM class_uvec; | |
9ea31741 | 164 | |
f3c6a02c | 165 | static SCM vtable_class_map = SCM_BOOL_F; |
ea742d29 | 166 | static scm_i_pthread_mutex_t vtable_class_map_lock = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
f3c6a02c | 167 | |
63385df2 LC |
168 | /* Port classes. Allocate 3 times the maximum number of port types so that |
169 | input ports, output ports, and in/out ports can be stored at different | |
170 | offsets. See `SCM_IN_PCLASS_INDEX' et al. */ | |
171 | SCM scm_port_class[3 * SCM_I_MAX_PORT_TYPE_COUNT]; | |
172 | ||
173 | /* SMOB classes. */ | |
47455469 | 174 | SCM scm_smob_class[SCM_I_MAX_SMOB_TYPE_COUNT]; |
539d5410 MV |
175 | |
176 | SCM scm_no_applicable_method; | |
177 | ||
80662eda MD |
178 | SCM_SYMBOL (scm_sym_define_public, "define-public"); |
179 | ||
180 | static SCM scm_make_unbound (void); | |
181 | static SCM scm_unbound_p (SCM obj); | |
398d8ee1 KN |
182 | static SCM scm_assert_bound (SCM value, SCM obj); |
183 | static SCM scm_at_assert_bound_ref (SCM obj, SCM index); | |
184 | static SCM scm_sys_goops_loaded (void); | |
9db8cf16 MG |
185 | static SCM scm_make_extended_class_from_symbol (SCM type_name_sym, |
186 | int applicablep); | |
80662eda | 187 | |
f3c6a02c AW |
188 | |
189 | SCM | |
190 | scm_i_define_class_for_vtable (SCM vtable) | |
191 | { | |
192 | SCM class; | |
193 | ||
ea742d29 AW |
194 | scm_i_pthread_mutex_lock (&vtable_class_map_lock); |
195 | ||
f3c6a02c AW |
196 | if (scm_is_false (vtable_class_map)) |
197 | vtable_class_map = scm_make_weak_key_hash_table (SCM_UNDEFINED); | |
198 | ||
199 | if (scm_is_false (scm_struct_vtable_p (vtable))) | |
200 | abort (); | |
201 | ||
202 | class = scm_hashq_ref (vtable_class_map, vtable, SCM_BOOL_F); | |
203 | ||
ea742d29 AW |
204 | scm_i_pthread_mutex_unlock (&vtable_class_map_lock); |
205 | ||
f3c6a02c AW |
206 | if (scm_is_false (class)) |
207 | { | |
208 | if (SCM_UNPACK (scm_class_class)) | |
209 | { | |
210 | SCM name = SCM_VTABLE_NAME (vtable); | |
211 | if (!scm_is_symbol (name)) | |
212 | name = scm_string_to_symbol (scm_nullstr); | |
213 | ||
214 | class = scm_make_extended_class_from_symbol | |
215 | (name, SCM_VTABLE_FLAG_IS_SET (vtable, SCM_VTABLE_FLAG_APPLICABLE)); | |
216 | } | |
217 | else | |
218 | /* `create_struct_classes' will fill this in later. */ | |
219 | class = SCM_BOOL_F; | |
ea742d29 AW |
220 | |
221 | /* Don't worry about races. This only happens when creating a | |
222 | vtable, which happens by definition in one thread. */ | |
223 | scm_i_pthread_mutex_lock (&vtable_class_map_lock); | |
f3c6a02c | 224 | scm_hashq_set_x (vtable_class_map, vtable, class); |
ea742d29 | 225 | scm_i_pthread_mutex_unlock (&vtable_class_map_lock); |
f3c6a02c AW |
226 | } |
227 | ||
228 | return class; | |
229 | } | |
230 | ||
539d5410 MV |
231 | /* This function is used for efficient type dispatch. */ |
232 | SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0, | |
233 | (SCM x), | |
234 | "Return the class of @var{x}.") | |
235 | #define FUNC_NAME s_scm_class_of | |
236 | { | |
237 | switch (SCM_ITAG3 (x)) | |
238 | { | |
239 | case scm_tc3_int_1: | |
240 | case scm_tc3_int_2: | |
241 | return scm_class_integer; | |
242 | ||
243 | case scm_tc3_imm24: | |
244 | if (SCM_CHARP (x)) | |
245 | return scm_class_char; | |
246 | else if (scm_is_bool (x)) | |
247 | return scm_class_boolean; | |
248 | else if (scm_is_null (x)) | |
249 | return scm_class_null; | |
250 | else | |
251 | return scm_class_unknown; | |
252 | ||
253 | case scm_tc3_cons: | |
254 | switch (SCM_TYP7 (x)) | |
255 | { | |
256 | case scm_tcs_cons_nimcar: | |
257 | return scm_class_pair; | |
539d5410 MV |
258 | case scm_tc7_symbol: |
259 | return scm_class_symbol; | |
260 | case scm_tc7_vector: | |
261 | case scm_tc7_wvect: | |
262 | return scm_class_vector; | |
5b46a8c2 | 263 | case scm_tc7_pointer: |
e2c2a699 | 264 | return class_foreign; |
c99de5aa | 265 | case scm_tc7_hashtable: |
9ea31741 AW |
266 | return class_hashtable; |
267 | case scm_tc7_fluid: | |
268 | return class_fluid; | |
269 | case scm_tc7_dynamic_state: | |
270 | return class_dynamic_state; | |
6f3b0cc2 AW |
271 | case scm_tc7_frame: |
272 | return class_frame; | |
273 | case scm_tc7_objcode: | |
274 | return class_objcode; | |
275 | case scm_tc7_vm: | |
276 | return class_vm; | |
277 | case scm_tc7_vm_cont: | |
278 | return class_vm_cont; | |
f826a886 AW |
279 | case scm_tc7_bytevector: |
280 | if (SCM_BYTEVECTOR_ELEMENT_TYPE (x) == SCM_ARRAY_ELEMENT_TYPE_VU8) | |
281 | return class_bytevector; | |
282 | else | |
283 | return class_uvec; | |
539d5410 MV |
284 | case scm_tc7_string: |
285 | return scm_class_string; | |
286 | case scm_tc7_number: | |
287 | switch SCM_TYP16 (x) { | |
288 | case scm_tc16_big: | |
289 | return scm_class_integer; | |
290 | case scm_tc16_real: | |
291 | return scm_class_real; | |
292 | case scm_tc16_complex: | |
293 | return scm_class_complex; | |
294 | case scm_tc16_fraction: | |
295 | return scm_class_fraction; | |
296 | } | |
2fb924f6 | 297 | case scm_tc7_program: |
b2b33168 AW |
298 | if (SCM_PROGRAM_IS_PRIMITIVE_GENERIC (x) |
299 | && SCM_UNPACK (*SCM_SUBR_GENERIC (x))) | |
fd12a19a AW |
300 | return scm_class_primitive_generic; |
301 | else | |
302 | return scm_class_procedure; | |
539d5410 MV |
303 | |
304 | case scm_tc7_smob: | |
305 | { | |
306 | scm_t_bits type = SCM_TYP16 (x); | |
307 | if (type != scm_tc16_port_with_ps) | |
308 | return scm_smob_class[SCM_TC2SMOBNUM (type)]; | |
309 | x = SCM_PORT_WITH_PS_PORT (x); | |
310 | /* fall through to ports */ | |
311 | } | |
312 | case scm_tc7_port: | |
313 | return scm_port_class[(SCM_WRTNG & SCM_CELL_WORD_0 (x) | |
314 | ? (SCM_RDNG & SCM_CELL_WORD_0 (x) | |
315 | ? SCM_INOUT_PCLASS_INDEX | SCM_PTOBNUM (x) | |
316 | : SCM_OUT_PCLASS_INDEX | SCM_PTOBNUM (x)) | |
317 | : SCM_IN_PCLASS_INDEX | SCM_PTOBNUM (x))]; | |
318 | case scm_tcs_struct: | |
319 | if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS_VALID) | |
320 | return SCM_CLASS_OF (x); | |
321 | else if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS) | |
322 | { | |
323 | /* Goops object */ | |
324 | if (! scm_is_false (SCM_OBJ_CLASS_REDEF (x))) | |
325 | scm_change_object_class (x, | |
326 | SCM_CLASS_OF (x), /* old */ | |
327 | SCM_OBJ_CLASS_REDEF (x)); /* new */ | |
328 | return SCM_CLASS_OF (x); | |
329 | } | |
330 | else | |
f3c6a02c | 331 | return scm_i_define_class_for_vtable (SCM_CLASS_OF (x)); |
539d5410 MV |
332 | default: |
333 | if (scm_is_pair (x)) | |
334 | return scm_class_pair; | |
335 | else | |
336 | return scm_class_unknown; | |
337 | } | |
338 | ||
339 | case scm_tc3_struct: | |
340 | case scm_tc3_tc7_1: | |
341 | case scm_tc3_tc7_2: | |
314b8716 | 342 | /* case scm_tc3_unused: */ |
539d5410 MV |
343 | /* Never reached */ |
344 | break; | |
345 | } | |
346 | return scm_class_unknown; | |
347 | } | |
348 | #undef FUNC_NAME | |
349 | ||
80662eda MD |
350 | /****************************************************************************** |
351 | * | |
352 | * Compute-cpl | |
353 | * | |
bbf8d523 MD |
354 | * This version doesn't fully handle multiple-inheritance. It serves |
355 | * only for booting classes and will be overloaded in Scheme | |
80662eda MD |
356 | * |
357 | ******************************************************************************/ | |
358 | ||
80662eda MD |
359 | static SCM |
360 | map (SCM (*proc) (SCM), SCM ls) | |
361 | { | |
d2e53ed6 | 362 | if (scm_is_null (ls)) |
80662eda | 363 | return ls; |
6b80d352 DH |
364 | else |
365 | { | |
366 | SCM res = scm_cons (proc (SCM_CAR (ls)), SCM_EOL); | |
367 | SCM h = res; | |
368 | ls = SCM_CDR (ls); | |
d2e53ed6 | 369 | while (!scm_is_null (ls)) |
6b80d352 DH |
370 | { |
371 | SCM_SETCDR (h, scm_cons (proc (SCM_CAR (ls)), SCM_EOL)); | |
372 | h = SCM_CDR (h); | |
373 | ls = SCM_CDR (ls); | |
374 | } | |
375 | return res; | |
376 | } | |
80662eda MD |
377 | } |
378 | ||
379 | static SCM | |
380 | filter_cpl (SCM ls) | |
381 | { | |
382 | SCM res = SCM_EOL; | |
d2e53ed6 | 383 | while (!scm_is_null (ls)) |
80662eda MD |
384 | { |
385 | SCM el = SCM_CAR (ls); | |
7888309b | 386 | if (scm_is_false (scm_c_memq (el, res))) |
80662eda MD |
387 | res = scm_cons (el, res); |
388 | ls = SCM_CDR (ls); | |
389 | } | |
390 | return res; | |
391 | } | |
392 | ||
393 | static SCM | |
394 | compute_cpl (SCM class) | |
395 | { | |
396 | if (goops_loaded_p) | |
bef95911 | 397 | return scm_call_1 (SCM_VARIABLE_REF (var_compute_cpl), class); |
80662eda MD |
398 | else |
399 | { | |
400 | SCM supers = SCM_SLOT (class, scm_si_direct_supers); | |
401 | SCM ls = scm_append (scm_acons (class, supers, | |
402 | map (compute_cpl, supers))); | |
403 | return scm_reverse_x (filter_cpl (ls), SCM_EOL); | |
404 | } | |
405 | } | |
406 | ||
407 | /****************************************************************************** | |
408 | * | |
409 | * compute-slots | |
410 | * | |
411 | ******************************************************************************/ | |
412 | ||
413 | static SCM | |
414 | remove_duplicate_slots (SCM l, SCM res, SCM slots_already_seen) | |
415 | { | |
416 | SCM tmp; | |
417 | ||
d2e53ed6 | 418 | if (scm_is_null (l)) |
80662eda MD |
419 | return res; |
420 | ||
421 | tmp = SCM_CAAR (l); | |
cc95e00a | 422 | if (!scm_is_symbol (tmp)) |
1afff620 | 423 | scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp)); |
6d77c894 | 424 | |
7888309b | 425 | if (scm_is_false (scm_c_memq (tmp, slots_already_seen))) { |
80662eda MD |
426 | res = scm_cons (SCM_CAR (l), res); |
427 | slots_already_seen = scm_cons (tmp, slots_already_seen); | |
428 | } | |
6d77c894 | 429 | |
80662eda MD |
430 | return remove_duplicate_slots (SCM_CDR (l), res, slots_already_seen); |
431 | } | |
432 | ||
433 | static SCM | |
434 | build_slots_list (SCM dslots, SCM cpl) | |
435 | { | |
436 | register SCM res = dslots; | |
437 | ||
d2e53ed6 | 438 | for (cpl = SCM_CDR (cpl); !scm_is_null (cpl); cpl = SCM_CDR (cpl)) |
1afff620 KN |
439 | res = scm_append (scm_list_2 (SCM_SLOT (SCM_CAR (cpl), |
440 | scm_si_direct_slots), | |
441 | res)); | |
80662eda MD |
442 | |
443 | /* res contains a list of slots. Remove slots which appears more than once */ | |
444 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
445 | } | |
446 | ||
447 | static SCM | |
448 | maplist (SCM ls) | |
449 | { | |
450 | SCM orig = ls; | |
d2e53ed6 | 451 | while (!scm_is_null (ls)) |
80662eda | 452 | { |
d2e53ed6 | 453 | if (!scm_is_pair (SCM_CAR (ls))) |
80662eda MD |
454 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
455 | ls = SCM_CDR (ls); | |
456 | } | |
457 | return orig; | |
458 | } | |
459 | ||
80662eda | 460 | |
23437298 DH |
461 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
462 | (SCM class), | |
5352393c MG |
463 | "Return a list consisting of the names of all slots belonging to\n" |
464 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
6d77c894 | 465 | "its superclasses.") |
23437298 | 466 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 467 | { |
398d8ee1 | 468 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
469 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
470 | SCM_SLOT (class, scm_si_cpl)); | |
471 | } | |
23437298 DH |
472 | #undef FUNC_NAME |
473 | ||
80662eda MD |
474 | |
475 | /****************************************************************************** | |
476 | * | |
477 | * compute-getters-n-setters | |
6d77c894 TTN |
478 | * |
479 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 480 | * classes and will be overloaded in Scheme. |
80662eda MD |
481 | * |
482 | ******************************************************************************/ | |
483 | ||
484 | SCM_KEYWORD (k_init_value, "init-value"); | |
485 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
486 | ||
487 | static SCM | |
488 | compute_getters_n_setters (SCM slots) | |
489 | { | |
490 | SCM res = SCM_EOL; | |
491 | SCM *cdrloc = &res; | |
c014a02e | 492 | long i = 0; |
80662eda | 493 | |
d2e53ed6 | 494 | for ( ; !scm_is_null (slots); slots = SCM_CDR (slots)) |
80662eda MD |
495 | { |
496 | SCM init = SCM_BOOL_F; | |
497 | SCM options = SCM_CDAR (slots); | |
d2e53ed6 | 498 | if (!scm_is_null (options)) |
80662eda | 499 | { |
b2b33168 AW |
500 | init = scm_get_keyword (k_init_value, options, SCM_PACK (0)); |
501 | if (SCM_UNPACK (init)) | |
366ecaec | 502 | { |
9d019f9b AW |
503 | init = scm_primitive_eval (scm_list_3 (scm_sym_lambda, |
504 | SCM_EOL, | |
505 | scm_list_2 (scm_sym_quote, | |
506 | init))); | |
366ecaec | 507 | } |
80662eda MD |
508 | else |
509 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
510 | } | |
511 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
512 | scm_cons (init, | |
e11e83f3 | 513 | scm_from_int (i++))), |
80662eda MD |
514 | SCM_EOL); |
515 | cdrloc = SCM_CDRLOC (*cdrloc); | |
516 | } | |
517 | return res; | |
518 | } | |
519 | ||
520 | /****************************************************************************** | |
521 | * | |
522 | * initialize-object | |
523 | * | |
524 | ******************************************************************************/ | |
525 | ||
526 | /*fixme* Manufacture keywords in advance */ | |
527 | SCM | |
c014a02e | 528 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 529 | { |
c014a02e | 530 | long i; |
23437298 DH |
531 | |
532 | for (i = 0; i != len; i += 2) | |
80662eda | 533 | { |
23437298 DH |
534 | SCM obj = SCM_CAR (l); |
535 | ||
c598539a | 536 | if (!scm_is_keyword (obj)) |
1afff620 | 537 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
bc36d050 | 538 | else if (scm_is_eq (obj, key)) |
80662eda | 539 | return SCM_CADR (l); |
23437298 DH |
540 | else |
541 | l = SCM_CDDR (l); | |
80662eda | 542 | } |
23437298 | 543 | |
80662eda MD |
544 | return default_value; |
545 | } | |
546 | ||
80662eda | 547 | |
23437298 DH |
548 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
549 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
550 | "Determine an associated value for the keyword @var{key} from\n" |
551 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
552 | "number of elements, where, starting with the first, every\n" | |
553 | "second element is a keyword, followed by its associated value.\n" | |
554 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
555 | "@var{default_value} is returned.") | |
23437298 | 556 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 557 | { |
c014a02e | 558 | long len; |
23437298 | 559 | |
c598539a | 560 | SCM_ASSERT (scm_is_keyword (key), key, SCM_ARG1, FUNC_NAME); |
80662eda | 561 | len = scm_ilength (l); |
b6311c08 | 562 | if (len < 0 || len % 2 == 1) |
1afff620 | 563 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
564 | |
565 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 566 | } |
23437298 DH |
567 | #undef FUNC_NAME |
568 | ||
80662eda | 569 | |
80662eda MD |
570 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
571 | ||
572 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
573 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
574 | ||
398d8ee1 KN |
575 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
576 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
577 | "Initialize the object @var{obj} with the given arguments\n" |
578 | "@var{initargs}.") | |
398d8ee1 | 579 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
580 | { |
581 | SCM tmp, get_n_set, slots; | |
582 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 583 | long n_initargs; |
80662eda | 584 | |
398d8ee1 | 585 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 586 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 587 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
6d77c894 | 588 | |
80662eda MD |
589 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); |
590 | slots = SCM_SLOT (class, scm_si_slots); | |
6d77c894 | 591 | |
80662eda MD |
592 | /* See for each slot how it must be initialized */ |
593 | for (; | |
d2e53ed6 | 594 | !scm_is_null (slots); |
80662eda MD |
595 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) |
596 | { | |
597 | SCM slot_name = SCM_CAR (slots); | |
b2b33168 | 598 | SCM slot_value = SCM_PACK (0); |
6d77c894 | 599 | |
d2e53ed6 | 600 | if (!scm_is_null (SCM_CDR (slot_name))) |
80662eda MD |
601 | { |
602 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 603 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 604 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 605 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 606 | scm_list_1 (slot_name)); |
80662eda MD |
607 | tmp = scm_i_get_keyword (k_init_keyword, |
608 | SCM_CDR (slot_name), | |
609 | n, | |
b2b33168 | 610 | SCM_PACK (0), |
398d8ee1 | 611 | FUNC_NAME); |
80662eda | 612 | slot_name = SCM_CAR (slot_name); |
b2b33168 | 613 | if (SCM_UNPACK (tmp)) |
80662eda MD |
614 | { |
615 | /* an initarg was provided for this slot */ | |
c598539a | 616 | if (!scm_is_keyword (tmp)) |
398d8ee1 | 617 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 618 | scm_list_1 (tmp)); |
80662eda MD |
619 | slot_value = scm_i_get_keyword (tmp, |
620 | initargs, | |
621 | n_initargs, | |
b2b33168 | 622 | SCM_PACK (0), |
398d8ee1 | 623 | FUNC_NAME); |
80662eda MD |
624 | } |
625 | } | |
626 | ||
b2b33168 | 627 | if (SCM_UNPACK (slot_value)) |
80662eda MD |
628 | /* set slot to provided value */ |
629 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
630 | else | |
631 | { | |
632 | /* set slot to its :init-form if it exists */ | |
633 | tmp = SCM_CADAR (get_n_set); | |
7888309b | 634 | if (scm_is_true (tmp)) |
80662eda MD |
635 | { |
636 | slot_value = get_slot_value (class, obj, SCM_CAR (get_n_set)); | |
637 | if (SCM_GOOPS_UNBOUNDP (slot_value)) | |
fd7ac322 AW |
638 | set_slot_value (class, |
639 | obj, | |
640 | SCM_CAR (get_n_set), | |
641 | scm_call_0 (tmp)); | |
80662eda MD |
642 | } |
643 | } | |
644 | } | |
6d77c894 | 645 | |
80662eda MD |
646 | return obj; |
647 | } | |
398d8ee1 | 648 | #undef FUNC_NAME |
80662eda | 649 | |
21ab2aeb MD |
650 | /* NOTE: The following macros are interdependent with code |
651 | * in goops.scm:compute-getters-n-setters | |
652 | */ | |
653 | #define SCM_GNS_INSTANCE_ALLOCATED_P(gns) \ | |
e11e83f3 | 654 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
d2e53ed6 MV |
655 | || (scm_is_pair (SCM_CDDR (gns)) \ |
656 | && scm_is_pair (SCM_CDDDR (gns)) \ | |
657 | && scm_is_pair (SCM_CDDDDR (gns)))) | |
21ab2aeb | 658 | #define SCM_GNS_INDEX(gns) \ |
e11e83f3 MV |
659 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
660 | ? SCM_I_INUM (SCM_CDDR (gns)) \ | |
661 | : scm_to_long (SCM_CAR (SCM_CDDDDR (gns)))) | |
21ab2aeb | 662 | #define SCM_GNS_SIZE(gns) \ |
e11e83f3 | 663 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
21ab2aeb | 664 | ? 1 \ |
e11e83f3 | 665 | : scm_to_long (SCM_CADR (SCM_CDDDDR (gns)))) |
80662eda MD |
666 | |
667 | SCM_KEYWORD (k_class, "class"); | |
b46fae00 MD |
668 | SCM_KEYWORD (k_allocation, "allocation"); |
669 | SCM_KEYWORD (k_instance, "instance"); | |
80662eda | 670 | |
398d8ee1 KN |
671 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
672 | (SCM class), | |
673 | "") | |
674 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 675 | { |
21ab2aeb | 676 | SCM slots, getters_n_setters, nfields; |
6b80d352 DH |
677 | unsigned long int n, i; |
678 | char *s; | |
cc95e00a | 679 | SCM layout; |
80662eda | 680 | |
398d8ee1 | 681 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda | 682 | slots = SCM_SLOT (class, scm_si_slots); |
21ab2aeb | 683 | getters_n_setters = SCM_SLOT (class, scm_si_getters_n_setters); |
80662eda | 684 | nfields = SCM_SLOT (class, scm_si_nfields); |
e11e83f3 | 685 | if (!SCM_I_INUMP (nfields) || SCM_I_INUM (nfields) < 0) |
398d8ee1 | 686 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 687 | scm_list_1 (nfields)); |
e11e83f3 | 688 | n = 2 * SCM_I_INUM (nfields); |
80662eda MD |
689 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 |
690 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 691 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 692 | scm_list_1 (nfields)); |
6d77c894 | 693 | |
190d4b0d | 694 | layout = scm_i_make_string (n, &s, 0); |
21ab2aeb | 695 | i = 0; |
d2e53ed6 | 696 | while (scm_is_pair (getters_n_setters)) |
80662eda | 697 | { |
21ab2aeb | 698 | if (SCM_GNS_INSTANCE_ALLOCATED_P (SCM_CAR (getters_n_setters))) |
b46fae00 | 699 | { |
21ab2aeb MD |
700 | SCM type; |
701 | int len, index, size; | |
702 | char p, a; | |
703 | ||
d2e53ed6 | 704 | if (i >= n || !scm_is_pair (slots)) |
21ab2aeb MD |
705 | goto inconsistent; |
706 | ||
707 | /* extract slot type */ | |
b46fae00 | 708 | len = scm_ilength (SCM_CDAR (slots)); |
21ab2aeb MD |
709 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), |
710 | len, SCM_BOOL_F, FUNC_NAME); | |
711 | /* determine slot GC protection and access mode */ | |
7888309b | 712 | if (scm_is_false (type)) |
6b80d352 | 713 | { |
21ab2aeb MD |
714 | p = 'p'; |
715 | a = 'w'; | |
6b80d352 DH |
716 | } |
717 | else | |
718 | { | |
21ab2aeb | 719 | if (!SCM_CLASSP (type)) |
cc95e00a | 720 | SCM_MISC_ERROR ("bad slot class", SCM_EOL); |
21ab2aeb MD |
721 | else if (SCM_SUBCLASSP (type, scm_class_foreign_slot)) |
722 | { | |
723 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
724 | p = 's'; | |
725 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
726 | p = 'p'; | |
727 | else | |
728 | p = 'u'; | |
729 | ||
730 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
731 | a = 'o'; | |
732 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
733 | a = 'r'; | |
b6cf4d02 AW |
734 | else if (SCM_SUBCLASSP (type, scm_class_hidden)) |
735 | a = 'h'; | |
21ab2aeb MD |
736 | else |
737 | a = 'w'; | |
738 | } | |
739 | else | |
740 | { | |
741 | p = 'p'; | |
742 | a = 'w'; | |
743 | } | |
744 | } | |
745 | ||
746 | index = SCM_GNS_INDEX (SCM_CAR (getters_n_setters)); | |
747 | if (index != (i >> 1)) | |
748 | goto inconsistent; | |
749 | size = SCM_GNS_SIZE (SCM_CAR (getters_n_setters)); | |
750 | while (size) | |
751 | { | |
752 | s[i++] = p; | |
753 | s[i++] = a; | |
754 | --size; | |
6b80d352 | 755 | } |
80662eda | 756 | } |
80662eda | 757 | slots = SCM_CDR (slots); |
21ab2aeb MD |
758 | getters_n_setters = SCM_CDR (getters_n_setters); |
759 | } | |
d2e53ed6 | 760 | if (!scm_is_null (slots)) |
21ab2aeb MD |
761 | { |
762 | inconsistent: | |
21ab2aeb | 763 | SCM_MISC_ERROR ("inconsistent getters-n-setters", SCM_EOL); |
80662eda | 764 | } |
b6cf4d02 | 765 | SCM_SET_VTABLE_LAYOUT (class, scm_string_to_symbol (layout)); |
80662eda MD |
766 | return SCM_UNSPECIFIED; |
767 | } | |
398d8ee1 | 768 | #undef FUNC_NAME |
80662eda MD |
769 | |
770 | static void prep_hashsets (SCM); | |
771 | ||
398d8ee1 KN |
772 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
773 | (SCM class, SCM dsupers), | |
774 | "") | |
775 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda | 776 | { |
398d8ee1 | 777 | SCM_VALIDATE_INSTANCE (1, class); |
51f66c91 AW |
778 | scm_i_struct_inherit_vtable_magic (SCM_CLASS_OF (class), class); |
779 | SCM_SET_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_OR_VALID); | |
80662eda MD |
780 | |
781 | prep_hashsets (class); | |
6d77c894 | 782 | |
80662eda MD |
783 | return SCM_UNSPECIFIED; |
784 | } | |
398d8ee1 | 785 | #undef FUNC_NAME |
80662eda | 786 | |
63c1872f | 787 | static void |
80662eda MD |
788 | prep_hashsets (SCM class) |
789 | { | |
dcb410ec | 790 | unsigned int i; |
80662eda | 791 | |
e161c9f8 | 792 | for (i = 0; i < 8; ++i) |
dcb410ec | 793 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
794 | } |
795 | ||
796 | /******************************************************************************/ | |
797 | ||
798 | SCM | |
799 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
800 | { | |
801 | SCM z, cpl, slots, nfields, g_n_s; | |
802 | ||
803 | /* Allocate one instance */ | |
804 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
805 | ||
806 | /* Initialize its slots */ | |
dcb410ec | 807 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
808 | cpl = compute_cpl (z); |
809 | slots = build_slots_list (maplist (dslots), cpl); | |
e11e83f3 | 810 | nfields = scm_from_int (scm_ilength (slots)); |
80662eda MD |
811 | g_n_s = compute_getters_n_setters (slots); |
812 | ||
b6cf4d02 | 813 | SCM_SET_SLOT (z, scm_vtable_index_name, name); |
dcb410ec DH |
814 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); |
815 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
816 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
817 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
818 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
819 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
820 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
821 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
822 | |
823 | /* Add this class in the direct-subclasses slot of dsupers */ | |
824 | { | |
825 | SCM tmp; | |
d2e53ed6 | 826 | for (tmp = dsupers; !scm_is_null (tmp); tmp = SCM_CDR (tmp)) |
dcb410ec DH |
827 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, |
828 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
829 | scm_si_direct_subclasses))); | |
80662eda MD |
830 | } |
831 | ||
80662eda MD |
832 | return z; |
833 | } | |
834 | ||
835 | SCM | |
836 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
837 | { | |
838 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
80662eda | 839 | scm_sys_prep_layout_x (z); |
51f66c91 | 840 | scm_sys_inherit_magic_x (z, dsupers); |
80662eda MD |
841 | return z; |
842 | } | |
843 | ||
844 | /******************************************************************************/ | |
845 | ||
6b80d352 | 846 | SCM_SYMBOL (sym_layout, "layout"); |
b6cf4d02 AW |
847 | SCM_SYMBOL (sym_flags, "flags"); |
848 | SCM_SYMBOL (sym_self, "%self"); | |
849 | SCM_SYMBOL (sym_instance_finalizer, "instance-finalizer"); | |
850 | SCM_SYMBOL (sym_reserved_0, "%reserved-0"); | |
851 | SCM_SYMBOL (sym_reserved_1, "%reserved-1"); | |
6b80d352 DH |
852 | SCM_SYMBOL (sym_print, "print"); |
853 | SCM_SYMBOL (sym_procedure, "procedure"); | |
854 | SCM_SYMBOL (sym_setter, "setter"); | |
855 | SCM_SYMBOL (sym_redefined, "redefined"); | |
856 | SCM_SYMBOL (sym_h0, "h0"); | |
857 | SCM_SYMBOL (sym_h1, "h1"); | |
858 | SCM_SYMBOL (sym_h2, "h2"); | |
859 | SCM_SYMBOL (sym_h3, "h3"); | |
860 | SCM_SYMBOL (sym_h4, "h4"); | |
861 | SCM_SYMBOL (sym_h5, "h5"); | |
862 | SCM_SYMBOL (sym_h6, "h6"); | |
863 | SCM_SYMBOL (sym_h7, "h7"); | |
864 | SCM_SYMBOL (sym_name, "name"); | |
865 | SCM_SYMBOL (sym_direct_supers, "direct-supers"); | |
866 | SCM_SYMBOL (sym_direct_slots, "direct-slots"); | |
867 | SCM_SYMBOL (sym_direct_subclasses, "direct-subclasses"); | |
868 | SCM_SYMBOL (sym_direct_methods, "direct-methods"); | |
869 | SCM_SYMBOL (sym_cpl, "cpl"); | |
870 | SCM_SYMBOL (sym_default_slot_definition_class, "default-slot-definition-class"); | |
871 | SCM_SYMBOL (sym_slots, "slots"); | |
872 | SCM_SYMBOL (sym_getters_n_setters, "getters-n-setters"); | |
873 | SCM_SYMBOL (sym_keyword_access, "keyword-access"); | |
874 | SCM_SYMBOL (sym_nfields, "nfields"); | |
6b80d352 DH |
875 | |
876 | ||
80662eda MD |
877 | static SCM |
878 | build_class_class_slots () | |
879 | { | |
b6cf4d02 AW |
880 | /* has to be kept in sync with SCM_VTABLE_BASE_LAYOUT and |
881 | SCM_CLASS_CLASS_LAYOUT */ | |
6b80d352 DH |
882 | return scm_list_n ( |
883 | scm_list_3 (sym_layout, k_class, scm_class_protected_read_only), | |
b6cf4d02 AW |
884 | scm_list_3 (sym_flags, k_class, scm_class_hidden), |
885 | scm_list_3 (sym_self, k_class, scm_class_self), | |
886 | scm_list_3 (sym_instance_finalizer, k_class, scm_class_hidden), | |
6b80d352 | 887 | scm_list_1 (sym_print), |
b6cf4d02 AW |
888 | scm_list_3 (sym_name, k_class, scm_class_protected_hidden), |
889 | scm_list_3 (sym_reserved_0, k_class, scm_class_hidden), | |
890 | scm_list_3 (sym_reserved_1, k_class, scm_class_hidden), | |
6b80d352 DH |
891 | scm_list_1 (sym_redefined), |
892 | scm_list_3 (sym_h0, k_class, scm_class_int), | |
893 | scm_list_3 (sym_h1, k_class, scm_class_int), | |
894 | scm_list_3 (sym_h2, k_class, scm_class_int), | |
895 | scm_list_3 (sym_h3, k_class, scm_class_int), | |
896 | scm_list_3 (sym_h4, k_class, scm_class_int), | |
897 | scm_list_3 (sym_h5, k_class, scm_class_int), | |
898 | scm_list_3 (sym_h6, k_class, scm_class_int), | |
899 | scm_list_3 (sym_h7, k_class, scm_class_int), | |
6b80d352 DH |
900 | scm_list_1 (sym_direct_supers), |
901 | scm_list_1 (sym_direct_slots), | |
902 | scm_list_1 (sym_direct_subclasses), | |
903 | scm_list_1 (sym_direct_methods), | |
904 | scm_list_1 (sym_cpl), | |
905 | scm_list_1 (sym_default_slot_definition_class), | |
906 | scm_list_1 (sym_slots), | |
907 | scm_list_1 (sym_getters_n_setters), | |
908 | scm_list_1 (sym_keyword_access), | |
909 | scm_list_1 (sym_nfields), | |
6b80d352 | 910 | SCM_UNDEFINED); |
80662eda MD |
911 | } |
912 | ||
913 | static void | |
914 | create_basic_classes (void) | |
915 | { | |
916 | /* SCM slots_of_class = build_class_class_slots (); */ | |
917 | ||
b6cf4d02 AW |
918 | /**** <class> ****/ |
919 | SCM cs = scm_from_locale_string (SCM_CLASS_CLASS_LAYOUT); | |
4a655e50 | 920 | SCM name = scm_from_latin1_symbol ("<class>"); |
f39448c5 | 921 | scm_class_class = scm_make_vtable_vtable (cs, SCM_INUM0, SCM_EOL); |
80662eda MD |
922 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID |
923 | | SCM_CLASSF_METACLASS)); | |
924 | ||
b6cf4d02 | 925 | SCM_SET_SLOT (scm_class_class, scm_vtable_index_name, name); |
dcb410ec DH |
926 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ |
927 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
928 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
6d77c894 | 929 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); |
dcb410ec DH |
930 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ |
931 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
e11e83f3 | 932 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, scm_from_int (SCM_N_CLASS_SLOTS)); |
dcb410ec DH |
933 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, |
934 | compute_getters_n_setters (slots_of_class)); */ | |
935 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
936 | |
937 | prep_hashsets (scm_class_class); | |
938 | ||
28d0871b | 939 | scm_module_define (scm_module_goops, name, scm_class_class); |
80662eda | 940 | |
51f66c91 | 941 | /**** <top> ****/ |
4a655e50 | 942 | name = scm_from_latin1_symbol ("<top>"); |
f39448c5 AW |
943 | scm_class_top = scm_basic_make_class (scm_class_class, name, |
944 | SCM_EOL, SCM_EOL); | |
80662eda | 945 | |
28d0871b | 946 | scm_module_define (scm_module_goops, name, scm_class_top); |
6d77c894 | 947 | |
51f66c91 | 948 | /**** <object> ****/ |
4a655e50 | 949 | name = scm_from_latin1_symbol ("<object>"); |
f39448c5 AW |
950 | scm_class_object = scm_basic_make_class (scm_class_class, name, |
951 | scm_list_1 (scm_class_top), SCM_EOL); | |
80662eda | 952 | |
28d0871b | 953 | scm_module_define (scm_module_goops, name, scm_class_object); |
80662eda MD |
954 | |
955 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 956 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 957 | |
1afff620 KN |
958 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
959 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
960 | } |
961 | ||
962 | /******************************************************************************/ | |
963 | ||
398d8ee1 KN |
964 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
965 | (SCM obj), | |
6bcefd15 | 966 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 967 | #define FUNC_NAME s_scm_instance_p |
80662eda | 968 | { |
7888309b | 969 | return scm_from_bool (SCM_INSTANCEP (obj)); |
80662eda | 970 | } |
398d8ee1 | 971 | #undef FUNC_NAME |
80662eda | 972 | |
80662eda MD |
973 | |
974 | /****************************************************************************** | |
6d77c894 | 975 | * |
80662eda MD |
976 | * Meta object accessors |
977 | * | |
978 | ******************************************************************************/ | |
398d8ee1 KN |
979 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
980 | (SCM obj), | |
6bcefd15 | 981 | "Return the class name of @var{obj}.") |
398d8ee1 | 982 | #define FUNC_NAME s_scm_class_name |
80662eda | 983 | { |
398d8ee1 | 984 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 985 | return scm_slot_ref (obj, sym_name); |
80662eda | 986 | } |
398d8ee1 | 987 | #undef FUNC_NAME |
80662eda | 988 | |
398d8ee1 KN |
989 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
990 | (SCM obj), | |
6bcefd15 | 991 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 992 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 993 | { |
398d8ee1 | 994 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 995 | return scm_slot_ref (obj, sym_direct_supers); |
80662eda | 996 | } |
398d8ee1 | 997 | #undef FUNC_NAME |
80662eda | 998 | |
398d8ee1 KN |
999 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
1000 | (SCM obj), | |
6bcefd15 | 1001 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 1002 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 1003 | { |
398d8ee1 | 1004 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1005 | return scm_slot_ref (obj, sym_direct_slots); |
80662eda | 1006 | } |
398d8ee1 | 1007 | #undef FUNC_NAME |
80662eda | 1008 | |
398d8ee1 KN |
1009 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
1010 | (SCM obj), | |
6bcefd15 | 1011 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 1012 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 1013 | { |
398d8ee1 | 1014 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1015 | return scm_slot_ref(obj, sym_direct_subclasses); |
80662eda | 1016 | } |
398d8ee1 | 1017 | #undef FUNC_NAME |
80662eda | 1018 | |
398d8ee1 KN |
1019 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
1020 | (SCM obj), | |
6bcefd15 | 1021 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 1022 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 1023 | { |
398d8ee1 | 1024 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1025 | return scm_slot_ref (obj, sym_direct_methods); |
80662eda | 1026 | } |
398d8ee1 | 1027 | #undef FUNC_NAME |
80662eda | 1028 | |
398d8ee1 KN |
1029 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
1030 | (SCM obj), | |
6bcefd15 | 1031 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 1032 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 1033 | { |
398d8ee1 | 1034 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1035 | return scm_slot_ref (obj, sym_cpl); |
80662eda | 1036 | } |
398d8ee1 | 1037 | #undef FUNC_NAME |
80662eda | 1038 | |
398d8ee1 KN |
1039 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
1040 | (SCM obj), | |
6bcefd15 | 1041 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 1042 | #define FUNC_NAME s_scm_class_slots |
80662eda | 1043 | { |
398d8ee1 | 1044 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1045 | return scm_slot_ref (obj, sym_slots); |
80662eda | 1046 | } |
398d8ee1 | 1047 | #undef FUNC_NAME |
80662eda | 1048 | |
398d8ee1 KN |
1049 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
1050 | (SCM obj), | |
6bcefd15 | 1051 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 1052 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 1053 | { |
398d8ee1 | 1054 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
1055 | return scm_procedure_property (obj, scm_sym_name); |
1056 | } | |
398d8ee1 | 1057 | #undef FUNC_NAME |
80662eda | 1058 | |
bbf8d523 MD |
1059 | SCM_SYMBOL (sym_methods, "methods"); |
1060 | SCM_SYMBOL (sym_extended_by, "extended-by"); | |
1061 | SCM_SYMBOL (sym_extends, "extends"); | |
1062 | ||
1063 | static | |
1064 | SCM fold_downward_gf_methods (SCM method_lists, SCM gf) | |
1065 | { | |
1066 | SCM gfs = scm_slot_ref (gf, sym_extended_by); | |
1067 | method_lists = scm_cons (scm_slot_ref (gf, sym_methods), method_lists); | |
d2e53ed6 | 1068 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1069 | { |
1070 | method_lists = fold_downward_gf_methods (method_lists, SCM_CAR (gfs)); | |
1071 | gfs = SCM_CDR (gfs); | |
1072 | } | |
1073 | return method_lists; | |
1074 | } | |
1075 | ||
1076 | static | |
1077 | SCM fold_upward_gf_methods (SCM method_lists, SCM gf) | |
1078 | { | |
1079 | if (SCM_IS_A_P (gf, scm_class_extended_generic)) | |
1080 | { | |
1081 | SCM gfs = scm_slot_ref (gf, sym_extends); | |
d2e53ed6 | 1082 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1083 | { |
1084 | SCM methods = scm_slot_ref (SCM_CAR (gfs), sym_methods); | |
1085 | method_lists = fold_upward_gf_methods (scm_cons (methods, | |
1086 | method_lists), | |
1087 | SCM_CAR (gfs)); | |
1088 | gfs = SCM_CDR (gfs); | |
1089 | } | |
1090 | } | |
1091 | return method_lists; | |
1092 | } | |
1093 | ||
398d8ee1 KN |
1094 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
1095 | (SCM obj), | |
6bcefd15 | 1096 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 1097 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 1098 | { |
bbf8d523 | 1099 | SCM methods; |
398d8ee1 | 1100 | SCM_VALIDATE_GENERIC (1, obj); |
bbf8d523 MD |
1101 | methods = fold_upward_gf_methods (SCM_EOL, obj); |
1102 | methods = fold_downward_gf_methods (methods, obj); | |
1103 | return scm_append (methods); | |
80662eda | 1104 | } |
398d8ee1 | 1105 | #undef FUNC_NAME |
80662eda | 1106 | |
398d8ee1 KN |
1107 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
1108 | (SCM obj), | |
bb2c02f2 | 1109 | "Return the generic function for the method @var{obj}.") |
398d8ee1 | 1110 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 1111 | { |
398d8ee1 | 1112 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1113 | return scm_slot_ref (obj, scm_from_latin1_symbol ("generic-function")); |
80662eda | 1114 | } |
398d8ee1 | 1115 | #undef FUNC_NAME |
80662eda | 1116 | |
398d8ee1 KN |
1117 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
1118 | (SCM obj), | |
6bcefd15 | 1119 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 1120 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 1121 | { |
398d8ee1 | 1122 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1123 | return scm_slot_ref (obj, scm_from_latin1_symbol ("specializers")); |
80662eda | 1124 | } |
398d8ee1 | 1125 | #undef FUNC_NAME |
80662eda | 1126 | |
398d8ee1 KN |
1127 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
1128 | (SCM obj), | |
6bcefd15 | 1129 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 1130 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 1131 | { |
398d8ee1 | 1132 | SCM_VALIDATE_METHOD (1, obj); |
6b80d352 | 1133 | return scm_slot_ref (obj, sym_procedure); |
80662eda | 1134 | } |
398d8ee1 | 1135 | #undef FUNC_NAME |
80662eda | 1136 | |
80662eda MD |
1137 | /****************************************************************************** |
1138 | * | |
1139 | * S l o t a c c e s s | |
1140 | * | |
1141 | ******************************************************************************/ | |
1142 | ||
398d8ee1 KN |
1143 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
1144 | (), | |
6bcefd15 | 1145 | "Return the unbound value.") |
398d8ee1 | 1146 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
1147 | { |
1148 | return SCM_GOOPS_UNBOUND; | |
1149 | } | |
398d8ee1 | 1150 | #undef FUNC_NAME |
80662eda | 1151 | |
398d8ee1 KN |
1152 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
1153 | (SCM obj), | |
6bcefd15 | 1154 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 1155 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
1156 | { |
1157 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
1158 | } | |
398d8ee1 | 1159 | #undef FUNC_NAME |
80662eda | 1160 | |
398d8ee1 KN |
1161 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
1162 | (SCM value, SCM obj), | |
6bcefd15 MG |
1163 | "Return @var{value} if it is bound, and invoke the\n" |
1164 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 1165 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
1166 | { |
1167 | if (SCM_GOOPS_UNBOUNDP (value)) | |
bef95911 | 1168 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1169 | return value; |
1170 | } | |
398d8ee1 | 1171 | #undef FUNC_NAME |
80662eda | 1172 | |
398d8ee1 KN |
1173 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
1174 | (SCM obj, SCM index), | |
6bcefd15 MG |
1175 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
1176 | "the value from @var{obj}.") | |
398d8ee1 | 1177 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda | 1178 | { |
e11e83f3 | 1179 | SCM value = SCM_SLOT (obj, scm_to_int (index)); |
80662eda | 1180 | if (SCM_GOOPS_UNBOUNDP (value)) |
bef95911 | 1181 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1182 | return value; |
1183 | } | |
398d8ee1 | 1184 | #undef FUNC_NAME |
80662eda | 1185 | |
398d8ee1 KN |
1186 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
1187 | (SCM obj, SCM index), | |
6bcefd15 | 1188 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 1189 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1190 | { |
e25f3727 | 1191 | scm_t_bits i; |
80662eda | 1192 | |
398d8ee1 | 1193 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1194 | i = scm_to_unsigned_integer (index, 0, |
1195 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1196 | scm_si_nfields)) | |
1197 | - 1); | |
58241edc | 1198 | return SCM_SLOT (obj, i); |
80662eda | 1199 | } |
ca83b028 DH |
1200 | #undef FUNC_NAME |
1201 | ||
398d8ee1 KN |
1202 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1203 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1204 | "Set the slot with index @var{index} in @var{obj} to\n" |
1205 | "@var{value}.") | |
398d8ee1 | 1206 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1207 | { |
e25f3727 | 1208 | scm_t_bits i; |
80662eda | 1209 | |
398d8ee1 | 1210 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1211 | i = scm_to_unsigned_integer (index, 0, |
1212 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1213 | scm_si_nfields)) | |
1214 | - 1); | |
6b80d352 | 1215 | |
dcb410ec | 1216 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1217 | |
80662eda MD |
1218 | return SCM_UNSPECIFIED; |
1219 | } | |
ca83b028 DH |
1220 | #undef FUNC_NAME |
1221 | ||
80662eda | 1222 | |
4d0949ea | 1223 | \f |
80662eda MD |
1224 | /** Utilities **/ |
1225 | ||
1226 | /* In the future, this function will return the effective slot | |
1227 | * definition associated with SLOT_NAME. Now it just returns some of | |
1228 | * the information which will be stored in the effective slot | |
1229 | * definition. | |
1230 | */ | |
1231 | ||
1232 | static SCM | |
1233 | slot_definition_using_name (SCM class, SCM slot_name) | |
1234 | { | |
1235 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
d2e53ed6 | 1236 | for (; !scm_is_null (slots); slots = SCM_CDR (slots)) |
d223c3fc | 1237 | if (scm_is_eq (SCM_CAAR (slots), slot_name)) |
80662eda MD |
1238 | return SCM_CAR (slots); |
1239 | return SCM_BOOL_F; | |
1240 | } | |
1241 | ||
1242 | static SCM | |
e81d98ec | 1243 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
54ee7cdf | 1244 | #define FUNC_NAME "%get-slot-value" |
80662eda MD |
1245 | { |
1246 | SCM access = SCM_CDDR (slotdef); | |
1247 | /* Two cases here: | |
1248 | * - access is an integer (the offset of this slot in the slots vector) | |
1249 | * - otherwise (car access) is the getter function to apply | |
e11e83f3 MV |
1250 | * |
1251 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1252 | * we can just assume fixnums here. | |
23437298 | 1253 | */ |
e11e83f3 | 1254 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1255 | /* Don't poke at the slots directly, because scm_struct_ref handles the |
1256 | access bits for us. */ | |
1257 | return scm_struct_ref (obj, access); | |
80662eda | 1258 | else |
9d019f9b | 1259 | return scm_call_1 (SCM_CAR (access), obj); |
80662eda | 1260 | } |
54ee7cdf | 1261 | #undef FUNC_NAME |
80662eda MD |
1262 | |
1263 | static SCM | |
1264 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1265 | { | |
1266 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1267 | if (scm_is_true (slotdef)) |
80662eda MD |
1268 | return get_slot_value (class, obj, slotdef); |
1269 | else | |
bef95911 | 1270 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name); |
80662eda MD |
1271 | } |
1272 | ||
1273 | static SCM | |
e81d98ec | 1274 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
54ee7cdf | 1275 | #define FUNC_NAME "%set-slot-value" |
80662eda MD |
1276 | { |
1277 | SCM access = SCM_CDDR (slotdef); | |
1278 | /* Two cases here: | |
1279 | * - access is an integer (the offset of this slot in the slots vector) | |
1280 | * - otherwise (cadr access) is the setter function to apply | |
e11e83f3 MV |
1281 | * |
1282 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1283 | * we can just assume fixnums here. | |
80662eda | 1284 | */ |
e11e83f3 | 1285 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1286 | /* obey permissions bits via going through struct-set! */ |
1287 | scm_struct_set_x (obj, access, value); | |
80662eda | 1288 | else |
9d019f9b AW |
1289 | /* ((cadr l) obj value) */ |
1290 | scm_call_2 (SCM_CADR (access), obj, value); | |
80662eda MD |
1291 | return SCM_UNSPECIFIED; |
1292 | } | |
54ee7cdf | 1293 | #undef FUNC_NAME |
80662eda MD |
1294 | |
1295 | static SCM | |
1296 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1297 | { | |
1298 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1299 | if (scm_is_true (slotdef)) |
80662eda MD |
1300 | return set_slot_value (class, obj, slotdef, value); |
1301 | else | |
bef95911 | 1302 | return scm_call_4 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name, value); |
80662eda MD |
1303 | } |
1304 | ||
1305 | static SCM | |
e81d98ec | 1306 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1307 | { |
1308 | register SCM l; | |
1309 | ||
d2e53ed6 | 1310 | for (l = SCM_ACCESSORS_OF (obj); !scm_is_null (l); l = SCM_CDR (l)) |
bc36d050 | 1311 | if (scm_is_eq (SCM_CAAR (l), slot_name)) |
80662eda MD |
1312 | return SCM_BOOL_T; |
1313 | ||
1314 | return SCM_BOOL_F; | |
1315 | } | |
1316 | ||
80662eda MD |
1317 | /* ======================================== */ |
1318 | ||
23437298 DH |
1319 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1320 | (SCM class, SCM obj, SCM slot_name), | |
1321 | "") | |
1322 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1323 | { |
1324 | SCM res; | |
1325 | ||
398d8ee1 KN |
1326 | SCM_VALIDATE_CLASS (1, class); |
1327 | SCM_VALIDATE_INSTANCE (2, obj); | |
1328 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1329 | |
1330 | res = get_slot_value_using_name (class, obj, slot_name); | |
1331 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1332 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1333 | return res; |
1334 | } | |
23437298 | 1335 | #undef FUNC_NAME |
80662eda | 1336 | |
23437298 DH |
1337 | |
1338 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1339 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1340 | "") | |
1341 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1342 | { |
398d8ee1 KN |
1343 | SCM_VALIDATE_CLASS (1, class); |
1344 | SCM_VALIDATE_INSTANCE (2, obj); | |
1345 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1346 | |
80662eda MD |
1347 | return set_slot_value_using_name (class, obj, slot_name, value); |
1348 | } | |
23437298 DH |
1349 | #undef FUNC_NAME |
1350 | ||
80662eda | 1351 | |
398d8ee1 KN |
1352 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1353 | (SCM class, SCM obj, SCM slot_name), | |
1354 | "") | |
1355 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1356 | { |
398d8ee1 KN |
1357 | SCM_VALIDATE_CLASS (1, class); |
1358 | SCM_VALIDATE_INSTANCE (2, obj); | |
1359 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1360 | |
1361 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1362 | ? SCM_BOOL_F | |
1363 | : SCM_BOOL_T); | |
1364 | } | |
398d8ee1 | 1365 | #undef FUNC_NAME |
80662eda | 1366 | |
398d8ee1 KN |
1367 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1368 | (SCM class, SCM obj, SCM slot_name), | |
1369 | "") | |
1370 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1371 | { | |
1372 | SCM_VALIDATE_CLASS (1, class); | |
1373 | SCM_VALIDATE_INSTANCE (2, obj); | |
1374 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1375 | return test_slot_existence (class, obj, slot_name); |
1376 | } | |
398d8ee1 | 1377 | #undef FUNC_NAME |
80662eda MD |
1378 | |
1379 | ||
1380 | /* ======================================== */ | |
1381 | ||
398d8ee1 KN |
1382 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1383 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1384 | "Return the value from @var{obj}'s slot with the name\n" |
1385 | "@var{slot_name}.") | |
398d8ee1 | 1386 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1387 | { |
1388 | SCM res, class; | |
1389 | ||
398d8ee1 | 1390 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1391 | TEST_CHANGE_CLASS (obj, class); |
1392 | ||
1393 | res = get_slot_value_using_name (class, obj, slot_name); | |
1394 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1395 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1396 | return res; |
1397 | } | |
398d8ee1 | 1398 | #undef FUNC_NAME |
80662eda | 1399 | |
398d8ee1 KN |
1400 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1401 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1402 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1403 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1404 | { |
1405 | SCM class; | |
1406 | ||
398d8ee1 | 1407 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1408 | TEST_CHANGE_CLASS(obj, class); |
1409 | ||
1410 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1411 | } | |
398d8ee1 | 1412 | #undef FUNC_NAME |
80662eda | 1413 | |
398d8ee1 | 1414 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1415 | |
398d8ee1 KN |
1416 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1417 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1418 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1419 | "is bound.") | |
398d8ee1 | 1420 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1421 | { |
1422 | SCM class; | |
1423 | ||
398d8ee1 | 1424 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1425 | TEST_CHANGE_CLASS(obj, class); |
1426 | ||
1427 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1428 | obj, | |
1429 | slot_name)) | |
1430 | ? SCM_BOOL_F | |
1431 | : SCM_BOOL_T); | |
1432 | } | |
398d8ee1 | 1433 | #undef FUNC_NAME |
80662eda | 1434 | |
6d77c894 | 1435 | SCM_DEFINE (scm_slot_exists_p, "slot-exists?", 2, 0, 0, |
398d8ee1 | 1436 | (SCM obj, SCM slot_name), |
6bcefd15 | 1437 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
6d77c894 | 1438 | #define FUNC_NAME s_scm_slot_exists_p |
80662eda MD |
1439 | { |
1440 | SCM class; | |
1441 | ||
398d8ee1 KN |
1442 | SCM_VALIDATE_INSTANCE (1, obj); |
1443 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1444 | TEST_CHANGE_CLASS (obj, class); |
1445 | ||
1446 | return test_slot_existence (class, obj, slot_name); | |
1447 | } | |
398d8ee1 | 1448 | #undef FUNC_NAME |
80662eda MD |
1449 | |
1450 | ||
1451 | /****************************************************************************** | |
1452 | * | |
1453 | * %allocate-instance (the low level instance allocation primitive) | |
1454 | * | |
1455 | ******************************************************************************/ | |
1456 | ||
1457 | static void clear_method_cache (SCM); | |
1458 | ||
398d8ee1 KN |
1459 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1460 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1461 | "Create a new instance of class @var{class} and initialize it\n" |
1462 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1463 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda | 1464 | { |
b6cf4d02 | 1465 | SCM obj; |
e25f3727 | 1466 | scm_t_signed_bits n, i; |
b6cf4d02 | 1467 | SCM layout; |
80662eda | 1468 | |
398d8ee1 | 1469 | SCM_VALIDATE_CLASS (1, class); |
80662eda | 1470 | |
b6cf4d02 | 1471 | /* FIXME: duplicates some of scm_make_struct. */ |
80662eda | 1472 | |
e11e83f3 | 1473 | n = SCM_I_INUM (SCM_SLOT (class, scm_si_nfields)); |
96a44c1c | 1474 | obj = scm_i_alloc_struct (SCM_STRUCT_DATA (class), n); |
6d77c894 | 1475 | |
b6cf4d02 AW |
1476 | layout = SCM_VTABLE_LAYOUT (class); |
1477 | ||
1478 | /* Set all SCM-holding slots to unbound */ | |
1479 | for (i = 0; i < n; i++) | |
71fc6438 AW |
1480 | { |
1481 | scm_t_wchar c = scm_i_symbol_ref (layout, i*2); | |
b6cf4d02 AW |
1482 | if (c == 'p') |
1483 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (SCM_GOOPS_UNBOUND); | |
1484 | else if (c == 's') | |
1485 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (obj); | |
1486 | else | |
1487 | SCM_STRUCT_DATA (obj)[i] = 0; | |
80662eda | 1488 | } |
6d77c894 | 1489 | |
b6cf4d02 AW |
1490 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) |
1491 | clear_method_cache (obj); | |
80662eda | 1492 | |
b6cf4d02 | 1493 | return obj; |
80662eda | 1494 | } |
398d8ee1 | 1495 | #undef FUNC_NAME |
80662eda | 1496 | |
398d8ee1 KN |
1497 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1498 | (SCM obj, SCM setter), | |
1499 | "") | |
1500 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1501 | { |
11561496 AW |
1502 | SCM_ASSERT (SCM_STRUCTP (obj) |
1503 | && (SCM_OBJ_CLASS_FLAGS (obj) & SCM_CLASSF_PURE_GENERIC), | |
80662eda MD |
1504 | obj, |
1505 | SCM_ARG1, | |
398d8ee1 | 1506 | FUNC_NAME); |
11561496 | 1507 | SCM_SET_GENERIC_SETTER (obj, setter); |
80662eda MD |
1508 | return SCM_UNSPECIFIED; |
1509 | } | |
398d8ee1 | 1510 | #undef FUNC_NAME |
80662eda MD |
1511 | |
1512 | /****************************************************************************** | |
1513 | * | |
1514 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 1515 | * |
80662eda MD |
1516 | ******************************************************************************/ |
1517 | ||
398d8ee1 KN |
1518 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1519 | (SCM old, SCM new), | |
1520 | "") | |
1521 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1522 | { |
398d8ee1 KN |
1523 | SCM_VALIDATE_INSTANCE (1, old); |
1524 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 1525 | |
6d77c894 | 1526 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
1527 | * scratch the old value with new to be correct with GC. |
1528 | * See "Class redefinition protocol above". | |
1529 | */ | |
9de87eea | 1530 | SCM_CRITICAL_SECTION_START; |
80662eda | 1531 | { |
32b12f40 KR |
1532 | scm_t_bits word0, word1; |
1533 | word0 = SCM_CELL_WORD_0 (old); | |
1534 | word1 = SCM_CELL_WORD_1 (old); | |
1535 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1536 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
1537 | SCM_SET_CELL_WORD_0 (new, word0); | |
1538 | SCM_SET_CELL_WORD_1 (new, word1); | |
80662eda | 1539 | } |
9de87eea | 1540 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1541 | return SCM_UNSPECIFIED; |
1542 | } | |
398d8ee1 | 1543 | #undef FUNC_NAME |
80662eda | 1544 | |
398d8ee1 KN |
1545 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1546 | (SCM old, SCM new), | |
1547 | "") | |
1548 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1549 | { |
398d8ee1 KN |
1550 | SCM_VALIDATE_CLASS (1, old); |
1551 | SCM_VALIDATE_CLASS (2, new); | |
80662eda | 1552 | |
9de87eea | 1553 | SCM_CRITICAL_SECTION_START; |
80662eda | 1554 | { |
32b12f40 KR |
1555 | scm_t_bits word0, word1; |
1556 | word0 = SCM_CELL_WORD_0 (old); | |
1557 | word1 = SCM_CELL_WORD_1 (old); | |
1558 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1559 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
b6cf4d02 | 1560 | SCM_STRUCT_DATA (old)[scm_vtable_index_self] = SCM_UNPACK (old); |
32b12f40 KR |
1561 | SCM_SET_CELL_WORD_0 (new, word0); |
1562 | SCM_SET_CELL_WORD_1 (new, word1); | |
b6cf4d02 | 1563 | SCM_STRUCT_DATA (new)[scm_vtable_index_self] = SCM_UNPACK (new); |
80662eda | 1564 | } |
9de87eea | 1565 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1566 | return SCM_UNSPECIFIED; |
1567 | } | |
398d8ee1 | 1568 | #undef FUNC_NAME |
80662eda | 1569 | |
398d8ee1 KN |
1570 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1571 | (SCM class), | |
1572 | "") | |
1573 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1574 | { |
398d8ee1 | 1575 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1576 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1577 | return SCM_UNSPECIFIED; | |
1578 | } | |
398d8ee1 | 1579 | #undef FUNC_NAME |
80662eda MD |
1580 | |
1581 | /* When instances change class, they finally get a new body, but | |
1582 | * before that, they go through purgatory in hell. Odd as it may | |
1583 | * seem, this data structure saves us from eternal suffering in | |
1584 | * infinite recursions. | |
1585 | */ | |
1586 | ||
92c2555f | 1587 | static scm_t_bits **hell; |
c014a02e ML |
1588 | static long n_hell = 1; /* one place for the evil one himself */ |
1589 | static long hell_size = 4; | |
2132f0d2 | 1590 | static SCM hell_mutex; |
80662eda | 1591 | |
c014a02e | 1592 | static long |
80662eda MD |
1593 | burnin (SCM o) |
1594 | { | |
c014a02e | 1595 | long i; |
80662eda | 1596 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 1597 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
1598 | return i; |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | static void | |
1603 | go_to_hell (void *o) | |
1604 | { | |
b5df9cda | 1605 | SCM obj = *(SCM*)o; |
2132f0d2 | 1606 | scm_lock_mutex (hell_mutex); |
51ef99f7 | 1607 | if (n_hell >= hell_size) |
80662eda | 1608 | { |
51ef99f7 | 1609 | hell_size *= 2; |
408bcd99 | 1610 | hell = scm_realloc (hell, hell_size * sizeof(*hell)); |
80662eda | 1611 | } |
6b80d352 | 1612 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 1613 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1614 | } |
1615 | ||
1616 | static void | |
1617 | go_to_heaven (void *o) | |
1618 | { | |
b5df9cda | 1619 | SCM obj = *(SCM*)o; |
2132f0d2 | 1620 | scm_lock_mutex (hell_mutex); |
b5df9cda | 1621 | hell[burnin (obj)] = hell[--n_hell]; |
2132f0d2 | 1622 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1623 | } |
1624 | ||
6b80d352 DH |
1625 | |
1626 | SCM_SYMBOL (scm_sym_change_class, "change-class"); | |
1627 | ||
80662eda | 1628 | static SCM |
b5df9cda | 1629 | purgatory (SCM obj, SCM new_class) |
80662eda | 1630 | { |
b5df9cda | 1631 | return scm_call_2 (SCM_VARIABLE_REF (var_change_class), obj, new_class); |
80662eda MD |
1632 | } |
1633 | ||
38d8927c MD |
1634 | /* This function calls the generic function change-class for all |
1635 | * instances which aren't currently undergoing class change. | |
1636 | */ | |
1637 | ||
80662eda | 1638 | void |
e81d98ec | 1639 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1640 | { |
1641 | if (!burnin (obj)) | |
b5df9cda AW |
1642 | { |
1643 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
1644 | scm_dynwind_rewind_handler (go_to_hell, &obj, SCM_F_WIND_EXPLICITLY); | |
1645 | scm_dynwind_unwind_handler (go_to_heaven, &obj, SCM_F_WIND_EXPLICITLY); | |
1646 | purgatory (obj, new_class); | |
1647 | scm_dynwind_end (); | |
1648 | } | |
80662eda MD |
1649 | } |
1650 | ||
1651 | /****************************************************************************** | |
1652 | * | |
6d77c894 TTN |
1653 | * GGGG FFFFF |
1654 | * G F | |
1655 | * G GG FFF | |
1656 | * G G F | |
80662eda MD |
1657 | * GGG E N E R I C F U N C T I O N S |
1658 | * | |
1659 | * This implementation provides | |
1660 | * - generic functions (with class specializers) | |
1661 | * - multi-methods | |
6d77c894 | 1662 | * - next-method |
80662eda MD |
1663 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
1664 | * | |
1665 | ******************************************************************************/ | |
1666 | ||
1667 | SCM_KEYWORD (k_name, "name"); | |
1668 | ||
63c1872f | 1669 | SCM_GLOBAL_SYMBOL (scm_sym_args, "args"); |
80662eda | 1670 | |
a4aa2134 | 1671 | |
e29db33c AW |
1672 | SCM_SYMBOL (sym_delayed_compile, "delayed-compile"); |
1673 | static SCM | |
1674 | make_dispatch_procedure (SCM gf) | |
1675 | { | |
1676 | static SCM var = SCM_BOOL_F; | |
393baa8a | 1677 | if (scm_is_false (var)) |
e29db33c AW |
1678 | var = scm_module_variable (scm_c_resolve_module ("oop goops dispatch"), |
1679 | sym_delayed_compile); | |
1680 | return scm_call_1 (SCM_VARIABLE_REF (var), gf); | |
1681 | } | |
1682 | ||
80662eda MD |
1683 | static void |
1684 | clear_method_cache (SCM gf) | |
1685 | { | |
e29db33c | 1686 | SCM_SET_GENERIC_DISPATCH_PROCEDURE (gf, make_dispatch_procedure (gf)); |
a9a90a88 | 1687 | SCM_CLEAR_GENERIC_EFFECTIVE_METHODS (gf); |
80662eda MD |
1688 | } |
1689 | ||
398d8ee1 KN |
1690 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1691 | (SCM gf), | |
1692 | "") | |
1693 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda | 1694 | { |
25ba37df | 1695 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
6d33e90f | 1696 | clear_method_cache (gf); |
80662eda MD |
1697 | return SCM_UNSPECIFIED; |
1698 | } | |
398d8ee1 | 1699 | #undef FUNC_NAME |
80662eda | 1700 | |
398d8ee1 KN |
1701 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1702 | (SCM proc), | |
1703 | "") | |
1704 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 1705 | { |
7888309b | 1706 | SCM_ASSERT (scm_is_true (scm_procedure_p (proc)), |
398d8ee1 | 1707 | proc, SCM_ARG1, FUNC_NAME); |
9fdf9fd3 | 1708 | return (SCM_PRIMITIVE_GENERIC_P (proc) ? SCM_BOOL_T : SCM_BOOL_F); |
80662eda | 1709 | } |
398d8ee1 | 1710 | #undef FUNC_NAME |
80662eda | 1711 | |
398d8ee1 KN |
1712 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1713 | (SCM subrs), | |
1714 | "") | |
1715 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 1716 | { |
6b80d352 | 1717 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
d2e53ed6 | 1718 | while (!scm_is_null (subrs)) |
80662eda MD |
1719 | { |
1720 | SCM subr = SCM_CAR (subrs); | |
9fdf9fd3 | 1721 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARGn, FUNC_NAME); |
52fd9639 AW |
1722 | SCM_SET_SUBR_GENERIC (subr, |
1723 | scm_make (scm_list_3 (scm_class_generic, | |
1724 | k_name, | |
1725 | SCM_SUBR_NAME (subr)))); | |
80662eda MD |
1726 | subrs = SCM_CDR (subrs); |
1727 | } | |
1728 | return SCM_UNSPECIFIED; | |
1729 | } | |
398d8ee1 | 1730 | #undef FUNC_NAME |
80662eda | 1731 | |
9f63ce02 AW |
1732 | SCM_DEFINE (scm_set_primitive_generic_x, "set-primitive-generic!", 2, 0, 0, |
1733 | (SCM subr, SCM generic), | |
1734 | "") | |
1735 | #define FUNC_NAME s_scm_set_primitive_generic_x | |
1736 | { | |
9fdf9fd3 | 1737 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARG1, FUNC_NAME); |
9f63ce02 | 1738 | SCM_ASSERT (SCM_PUREGENERICP (generic), generic, SCM_ARG2, FUNC_NAME); |
52fd9639 | 1739 | SCM_SET_SUBR_GENERIC (subr, generic); |
9f63ce02 AW |
1740 | return SCM_UNSPECIFIED; |
1741 | } | |
1742 | #undef FUNC_NAME | |
1743 | ||
398d8ee1 KN |
1744 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1745 | (SCM subr), | |
1746 | "") | |
1747 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda | 1748 | { |
9fdf9fd3 | 1749 | if (SCM_PRIMITIVE_GENERIC_P (subr)) |
80662eda | 1750 | { |
b2b33168 | 1751 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (subr))) |
a48d60b1 MD |
1752 | scm_enable_primitive_generic_x (scm_list_1 (subr)); |
1753 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 1754 | } |
db4b4ca6 | 1755 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1756 | } |
398d8ee1 | 1757 | #undef FUNC_NAME |
80662eda | 1758 | |
a48d60b1 MD |
1759 | typedef struct t_extension { |
1760 | struct t_extension *next; | |
1761 | SCM extended; | |
1762 | SCM extension; | |
1763 | } t_extension; | |
1764 | ||
d0cad249 LC |
1765 | |
1766 | /* Hint for `scm_gc_malloc ()' et al. when allocating `t_extension' | |
1767 | objects. */ | |
1768 | static const char extension_gc_hint[] = "GOOPS extension"; | |
1769 | ||
a48d60b1 MD |
1770 | static t_extension *extensions = 0; |
1771 | ||
a48d60b1 MD |
1772 | void |
1773 | scm_c_extend_primitive_generic (SCM extended, SCM extension) | |
1774 | { | |
1775 | if (goops_loaded_p) | |
1776 | { | |
1777 | SCM gf, gext; | |
b2b33168 | 1778 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (extended))) |
a48d60b1 MD |
1779 | scm_enable_primitive_generic_x (scm_list_1 (extended)); |
1780 | gf = *SCM_SUBR_GENERIC (extended); | |
1781 | gext = scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic), | |
1782 | gf, | |
ce471ab8 | 1783 | SCM_SUBR_NAME (extension)); |
feccd2d3 | 1784 | SCM_SET_SUBR_GENERIC (extension, gext); |
a48d60b1 MD |
1785 | } |
1786 | else | |
1787 | { | |
d0cad249 LC |
1788 | t_extension *e = scm_gc_malloc (sizeof (t_extension), |
1789 | extension_gc_hint); | |
a48d60b1 MD |
1790 | t_extension **loc = &extensions; |
1791 | /* Make sure that extensions are placed before their own | |
1792 | * extensions in the extensions list. O(N^2) algorithm, but | |
1793 | * extensions of primitive generics are rare. | |
1794 | */ | |
d223c3fc | 1795 | while (*loc && !scm_is_eq (extension, (*loc)->extended)) |
a48d60b1 MD |
1796 | loc = &(*loc)->next; |
1797 | e->next = *loc; | |
1798 | e->extended = extended; | |
1799 | e->extension = extension; | |
1800 | *loc = e; | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | static void | |
1805 | setup_extended_primitive_generics () | |
1806 | { | |
1807 | while (extensions) | |
1808 | { | |
1809 | t_extension *e = extensions; | |
1810 | scm_c_extend_primitive_generic (e->extended, e->extension); | |
1811 | extensions = e->next; | |
a48d60b1 MD |
1812 | } |
1813 | } | |
1814 | ||
fa075d40 AW |
1815 | /* Dirk:FIXME:: In all of these scm_wta_dispatch_* routines it is |
1816 | * assumed that 'gf' is zero if uninitialized. It would be cleaner if | |
1817 | * some valid SCM value like SCM_BOOL_F or SCM_UNDEFINED were chosen. | |
1818 | */ | |
1819 | ||
1820 | SCM | |
1821 | scm_wta_dispatch_0 (SCM gf, const char *subr) | |
1822 | { | |
1823 | if (!SCM_UNPACK (gf)) | |
1824 | scm_error_num_args_subr (subr); | |
1825 | ||
1826 | return scm_call_0 (gf); | |
1827 | } | |
1828 | ||
1829 | SCM | |
1830 | scm_wta_dispatch_1 (SCM gf, SCM a1, int pos, const char *subr) | |
1831 | { | |
1832 | if (!SCM_UNPACK (gf)) | |
1833 | scm_wrong_type_arg (subr, pos, a1); | |
1834 | ||
1835 | return scm_call_1 (gf, a1); | |
1836 | } | |
1837 | ||
1838 | SCM | |
1839 | scm_wta_dispatch_2 (SCM gf, SCM a1, SCM a2, int pos, const char *subr) | |
1840 | { | |
1841 | if (!SCM_UNPACK (gf)) | |
1842 | scm_wrong_type_arg (subr, pos, (pos == SCM_ARG1) ? a1 : a2); | |
1843 | ||
1844 | return scm_call_2 (gf, a1, a2); | |
1845 | } | |
1846 | ||
1847 | SCM | |
1848 | scm_wta_dispatch_n (SCM gf, SCM args, int pos, const char *subr) | |
1849 | { | |
1850 | if (!SCM_UNPACK (gf)) | |
1851 | scm_wrong_type_arg (subr, pos, scm_list_ref (args, scm_from_int (pos))); | |
1852 | ||
1853 | return scm_apply_0 (gf, args); | |
1854 | } | |
1855 | ||
80662eda | 1856 | /****************************************************************************** |
6d77c894 | 1857 | * |
80662eda | 1858 | * Protocol for calling a generic fumction |
6d77c894 | 1859 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
1860 | * for efficiency reasons): |
1861 | * | |
1862 | * + apply-generic (gf args) | |
1863 | * + compute-applicable-methods (gf args ...) | |
1864 | * + sort-applicable-methods (methods args) | |
1865 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
1866 | * |
1867 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
1868 | * method. Applying a next-method will call apply-next-method which in |
1869 | * turn will call apply again to call effectively the following method. | |
1870 | * | |
1871 | ******************************************************************************/ | |
1872 | ||
1873 | static int | |
1874 | applicablep (SCM actual, SCM formal) | |
1875 | { | |
79a3dafe | 1876 | /* We already know that the cpl is well formed. */ |
7888309b | 1877 | return scm_is_true (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); |
80662eda MD |
1878 | } |
1879 | ||
1880 | static int | |
34d19ef6 | 1881 | more_specificp (SCM m1, SCM m2, SCM const *targs) |
80662eda MD |
1882 | { |
1883 | register SCM s1, s2; | |
c014a02e | 1884 | register long i; |
6d77c894 TTN |
1885 | /* |
1886 | * Note: | |
1887 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
80662eda MD |
1888 | * other when we have a dotted parameter list). For instance, with the call |
1889 | * (M 1) | |
1890 | * with | |
1891 | * (define-method M (a . l) ....) | |
6d77c894 | 1892 | * (define-method M (a) ....) |
80662eda MD |
1893 | * |
1894 | * we consider that the second method is more specific. | |
1895 | * | |
1896 | * BTW, targs is an array of types. We don't need it's size since | |
1897 | * we already know that m1 and m2 are applicable (no risk to go past | |
1898 | * the end of this array). | |
1899 | * | |
1900 | */ | |
34d19ef6 | 1901 | for (i=0, s1=SPEC_OF(m1), s2=SPEC_OF(m2); ; i++, s1=SCM_CDR(s1), s2=SCM_CDR(s2)) { |
d2e53ed6 MV |
1902 | if (scm_is_null(s1)) return 1; |
1903 | if (scm_is_null(s2)) return 0; | |
d223c3fc | 1904 | if (!scm_is_eq (SCM_CAR(s1), SCM_CAR(s2))) { |
80662eda | 1905 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); |
6d77c894 | 1906 | |
dcb410ec | 1907 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
d223c3fc | 1908 | if (scm_is_eq (cs1, SCM_CAR (l))) |
80662eda | 1909 | return 1; |
d223c3fc | 1910 | if (scm_is_eq (cs2, SCM_CAR (l))) |
80662eda MD |
1911 | return 0; |
1912 | } | |
1913 | return 0;/* should not occur! */ | |
1914 | } | |
1915 | } | |
1916 | return 0; /* should not occur! */ | |
1917 | } | |
1918 | ||
1919 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1920 | ||
1921 | static SCM | |
c014a02e | 1922 | scm_i_vector2list (SCM l, long len) |
80662eda | 1923 | { |
c014a02e | 1924 | long j; |
00ffa0e7 | 1925 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
6d77c894 | 1926 | |
80662eda | 1927 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { |
4057a3e0 | 1928 | SCM_SIMPLE_VECTOR_SET (z, j, SCM_CAR (l)); |
80662eda MD |
1929 | } |
1930 | return z; | |
1931 | } | |
1932 | ||
1933 | static SCM | |
34d19ef6 | 1934 | sort_applicable_methods (SCM method_list, long size, SCM const *targs) |
80662eda | 1935 | { |
c014a02e | 1936 | long i, j, incr; |
80662eda MD |
1937 | SCM *v, vector = SCM_EOL; |
1938 | SCM buffer[BUFFSIZE]; | |
1939 | SCM save = method_list; | |
4057a3e0 | 1940 | scm_t_array_handle handle; |
80662eda MD |
1941 | |
1942 | /* For reasonably sized method_lists we can try to avoid all the | |
1943 | * consing and reorder the list in place... | |
1944 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
1945 | */ | |
1946 | if (size <= BUFFSIZE) | |
1947 | { | |
1948 | for (i = 0; i < size; i++) | |
1949 | { | |
1950 | buffer[i] = SCM_CAR (method_list); | |
1951 | method_list = SCM_CDR (method_list); | |
1952 | } | |
1953 | v = buffer; | |
6d77c894 | 1954 | } |
80662eda MD |
1955 | else |
1956 | { | |
1957 | /* Too many elements in method_list to keep everything locally */ | |
1958 | vector = scm_i_vector2list (save, size); | |
4057a3e0 | 1959 | v = scm_vector_writable_elements (vector, &handle, NULL, NULL); |
80662eda MD |
1960 | } |
1961 | ||
6d77c894 | 1962 | /* Use a simple shell sort since it is generally faster than qsort on |
80662eda MD |
1963 | * small vectors (which is probably mostly the case when we have to |
1964 | * sort a list of applicable methods). | |
1965 | */ | |
1966 | for (incr = size / 2; incr; incr /= 2) | |
1967 | { | |
1968 | for (i = incr; i < size; i++) | |
1969 | { | |
1970 | for (j = i - incr; j >= 0; j -= incr) | |
1971 | { | |
1972 | if (more_specificp (v[j], v[j+incr], targs)) | |
1973 | break; | |
1974 | else | |
1975 | { | |
1976 | SCM tmp = v[j + incr]; | |
1977 | v[j + incr] = v[j]; | |
1978 | v[j] = tmp; | |
1979 | } | |
1980 | } | |
1981 | } | |
1982 | } | |
1983 | ||
1984 | if (size <= BUFFSIZE) | |
1985 | { | |
1986 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
1987 | for (i = 0, method_list = save; i < size; i++, v++) | |
1988 | { | |
1989 | SCM_SETCAR (method_list, *v); | |
1990 | method_list = SCM_CDR (method_list); | |
1991 | } | |
1992 | return save; | |
1993 | } | |
4057a3e0 | 1994 | |
6d77c894 | 1995 | /* If we are here, that's that we did it the hard way... */ |
c8857a4d | 1996 | scm_array_handle_release (&handle); |
80662eda MD |
1997 | return scm_vector_to_list (vector); |
1998 | } | |
1999 | ||
2000 | SCM | |
c014a02e | 2001 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 2002 | { |
c014a02e ML |
2003 | register long i; |
2004 | long count = 0; | |
80662eda MD |
2005 | SCM l, fl, applicable = SCM_EOL; |
2006 | SCM save = args; | |
34d19ef6 HWN |
2007 | SCM buffer[BUFFSIZE]; |
2008 | SCM const *types; | |
2009 | SCM *p; | |
2010 | SCM tmp = SCM_EOL; | |
4057a3e0 | 2011 | scm_t_array_handle handle; |
6d77c894 | 2012 | |
80662eda | 2013 | /* Build the list of arguments types */ |
4057a3e0 MV |
2014 | if (len >= BUFFSIZE) |
2015 | { | |
2016 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); | |
2017 | types = p = scm_vector_writable_elements (tmp, &handle, NULL, NULL); | |
34d19ef6 HWN |
2018 | |
2019 | /* | |
2020 | note that we don't have to work to reset the generation | |
2021 | count. TMP is a new vector anyway, and it is found | |
2022 | conservatively. | |
2023 | */ | |
4057a3e0 | 2024 | } |
80662eda MD |
2025 | else |
2026 | types = p = buffer; | |
6d77c894 | 2027 | |
d2e53ed6 | 2028 | for ( ; !scm_is_null (args); args = SCM_CDR (args)) |
80662eda | 2029 | *p++ = scm_class_of (SCM_CAR (args)); |
34d19ef6 | 2030 | |
80662eda | 2031 | /* Build a list of all applicable methods */ |
d2e53ed6 | 2032 | for (l = scm_generic_function_methods (gf); !scm_is_null (l); l = SCM_CDR (l)) |
80662eda MD |
2033 | { |
2034 | fl = SPEC_OF (SCM_CAR (l)); | |
80662eda MD |
2035 | for (i = 0; ; i++, fl = SCM_CDR (fl)) |
2036 | { | |
c312aca7 | 2037 | if (SCM_INSTANCEP (fl) |
80662eda | 2038 | /* We have a dotted argument list */ |
d2e53ed6 | 2039 | || (i >= len && scm_is_null (fl))) |
80662eda MD |
2040 | { /* both list exhausted */ |
2041 | applicable = scm_cons (SCM_CAR (l), applicable); | |
2042 | count += 1; | |
2043 | break; | |
2044 | } | |
2045 | if (i >= len | |
d2e53ed6 | 2046 | || scm_is_null (fl) |
80662eda MD |
2047 | || !applicablep (types[i], SCM_CAR (fl))) |
2048 | break; | |
2049 | } | |
2050 | } | |
2051 | ||
c8857a4d MV |
2052 | if (len >= BUFFSIZE) |
2053 | scm_array_handle_release (&handle); | |
2054 | ||
80662eda MD |
2055 | if (count == 0) |
2056 | { | |
2057 | if (find_method_p) | |
2058 | return SCM_BOOL_F; | |
bef95911 | 2059 | scm_call_2 (SCM_VARIABLE_REF (var_no_applicable_method), gf, save); |
80662eda MD |
2060 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ |
2061 | return SCM_BOOL_F; | |
2062 | } | |
34d19ef6 | 2063 | |
80662eda MD |
2064 | return (count == 1 |
2065 | ? applicable | |
2066 | : sort_applicable_methods (applicable, count, types)); | |
2067 | } | |
2068 | ||
2069 | #if 0 | |
2070 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
2071 | #endif | |
2072 | ||
2073 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
2074 | ||
2075 | SCM | |
2076 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 2077 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 2078 | { |
c014a02e | 2079 | long n; |
398d8ee1 | 2080 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2081 | n = scm_ilength (args); |
398d8ee1 | 2082 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
2083 | return scm_compute_applicable_methods (gf, args, n, 1); |
2084 | } | |
398d8ee1 | 2085 | #undef FUNC_NAME |
80662eda | 2086 | |
86d31dfe | 2087 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
cc7005bc AW |
2088 | SCM_VARIABLE_INIT (var_compute_applicable_methods, "compute-applicable-methods", |
2089 | scm_c_define_gsubr (s_sys_compute_applicable_methods, 2, 0, 0, | |
2090 | scm_sys_compute_applicable_methods)); | |
80662eda | 2091 | |
80662eda MD |
2092 | /****************************************************************************** |
2093 | * | |
2094 | * A simple make (which will be redefined later in Scheme) | |
2095 | * This version handles only creation of gf, methods and classes (no instances) | |
2096 | * | |
6d77c894 | 2097 | * Since this code will disappear when Goops will be fully booted, |
80662eda MD |
2098 | * no precaution is taken to be efficient. |
2099 | * | |
2100 | ******************************************************************************/ | |
2101 | ||
2102 | SCM_KEYWORD (k_setter, "setter"); | |
2103 | SCM_KEYWORD (k_specializers, "specializers"); | |
2104 | SCM_KEYWORD (k_procedure, "procedure"); | |
5487977b AW |
2105 | SCM_KEYWORD (k_formals, "formals"); |
2106 | SCM_KEYWORD (k_body, "body"); | |
e177058b | 2107 | SCM_KEYWORD (k_make_procedure, "make-procedure"); |
80662eda MD |
2108 | SCM_KEYWORD (k_dsupers, "dsupers"); |
2109 | SCM_KEYWORD (k_slots, "slots"); | |
2110 | SCM_KEYWORD (k_gf, "generic-function"); | |
2111 | ||
398d8ee1 KN |
2112 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
2113 | (SCM args), | |
27c37006 | 2114 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 2115 | "all necessary initialization information.") |
398d8ee1 | 2116 | #define FUNC_NAME s_scm_make |
80662eda MD |
2117 | { |
2118 | SCM class, z; | |
c014a02e | 2119 | long len = scm_ilength (args); |
80662eda MD |
2120 | |
2121 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2122 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2123 | |
2124 | class = SCM_CAR(args); | |
2125 | args = SCM_CDR(args); | |
2126 | ||
d223c3fc AW |
2127 | if (scm_is_eq (class, scm_class_generic) |
2128 | || scm_is_eq (class, scm_class_accessor)) | |
80662eda | 2129 | { |
80662eda | 2130 | z = scm_make_struct (class, SCM_INUM0, |
72d2e7e6 | 2131 | scm_list_4 (SCM_BOOL_F, |
51f66c91 | 2132 | SCM_EOL, |
1afff620 | 2133 | SCM_INUM0, |
bbf8d523 | 2134 | SCM_EOL)); |
80662eda MD |
2135 | scm_set_procedure_property_x (z, scm_sym_name, |
2136 | scm_get_keyword (k_name, | |
2137 | args, | |
2138 | SCM_BOOL_F)); | |
2139 | clear_method_cache (z); | |
d223c3fc | 2140 | if (scm_is_eq (class, scm_class_accessor)) |
80662eda MD |
2141 | { |
2142 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
7888309b | 2143 | if (scm_is_true (setter)) |
80662eda MD |
2144 | scm_sys_set_object_setter_x (z, setter); |
2145 | } | |
2146 | } | |
2147 | else | |
2148 | { | |
2149 | z = scm_sys_allocate_instance (class, args); | |
2150 | ||
d223c3fc AW |
2151 | if (scm_is_eq (class, scm_class_method) |
2152 | || scm_is_eq (class, scm_class_accessor_method)) | |
80662eda | 2153 | { |
6d77c894 | 2154 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2155 | scm_i_get_keyword (k_gf, |
2156 | args, | |
2157 | len - 1, | |
2158 | SCM_BOOL_F, | |
dcb410ec | 2159 | FUNC_NAME)); |
6d77c894 | 2160 | SCM_SET_SLOT (z, scm_si_specializers, |
80662eda MD |
2161 | scm_i_get_keyword (k_specializers, |
2162 | args, | |
2163 | len - 1, | |
2164 | SCM_EOL, | |
dcb410ec | 2165 | FUNC_NAME)); |
6d77c894 | 2166 | SCM_SET_SLOT (z, scm_si_procedure, |
80662eda MD |
2167 | scm_i_get_keyword (k_procedure, |
2168 | args, | |
2169 | len - 1, | |
e177058b | 2170 | SCM_BOOL_F, |
dcb410ec | 2171 | FUNC_NAME)); |
5487977b AW |
2172 | SCM_SET_SLOT (z, scm_si_formals, |
2173 | scm_i_get_keyword (k_formals, | |
2174 | args, | |
2175 | len - 1, | |
2176 | SCM_EOL, | |
2177 | FUNC_NAME)); | |
2178 | SCM_SET_SLOT (z, scm_si_body, | |
2179 | scm_i_get_keyword (k_body, | |
2180 | args, | |
2181 | len - 1, | |
2182 | SCM_EOL, | |
2183 | FUNC_NAME)); | |
e177058b AW |
2184 | SCM_SET_SLOT (z, scm_si_make_procedure, |
2185 | scm_i_get_keyword (k_make_procedure, | |
5487977b AW |
2186 | args, |
2187 | len - 1, | |
2188 | SCM_BOOL_F, | |
2189 | FUNC_NAME)); | |
80662eda MD |
2190 | } |
2191 | else | |
2192 | { | |
2193 | /* In all the others case, make a new class .... No instance here */ | |
b6cf4d02 | 2194 | SCM_SET_SLOT (z, scm_vtable_index_name, |
80662eda MD |
2195 | scm_i_get_keyword (k_name, |
2196 | args, | |
2197 | len - 1, | |
4a655e50 | 2198 | scm_from_latin1_symbol ("???"), |
dcb410ec | 2199 | FUNC_NAME)); |
6d77c894 | 2200 | SCM_SET_SLOT (z, scm_si_direct_supers, |
80662eda MD |
2201 | scm_i_get_keyword (k_dsupers, |
2202 | args, | |
2203 | len - 1, | |
2204 | SCM_EOL, | |
dcb410ec | 2205 | FUNC_NAME)); |
6d77c894 | 2206 | SCM_SET_SLOT (z, scm_si_direct_slots, |
80662eda MD |
2207 | scm_i_get_keyword (k_slots, |
2208 | args, | |
2209 | len - 1, | |
2210 | SCM_EOL, | |
dcb410ec | 2211 | FUNC_NAME)); |
80662eda MD |
2212 | } |
2213 | } | |
2214 | return z; | |
2215 | } | |
398d8ee1 | 2216 | #undef FUNC_NAME |
80662eda | 2217 | |
398d8ee1 KN |
2218 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2219 | (SCM l), | |
2220 | "") | |
2221 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2222 | { |
2223 | SCM gf; | |
c014a02e | 2224 | long len = scm_ilength (l); |
80662eda MD |
2225 | |
2226 | if (len == 0) | |
398d8ee1 | 2227 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2228 | |
2229 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2230 | SCM_VALIDATE_GENERIC (1, gf); |
d2e53ed6 | 2231 | if (scm_is_null (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2232 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2233 | |
2234 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2235 | } | |
398d8ee1 | 2236 | #undef FUNC_NAME |
80662eda | 2237 | |
398d8ee1 KN |
2238 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2239 | (SCM m1, SCM m2, SCM targs), | |
b1f57ea4 LC |
2240 | "Return true if method @var{m1} is more specific than @var{m2} " |
2241 | "given the argument types (classes) listed in @var{targs}.") | |
398d8ee1 | 2242 | #define FUNC_NAME s_scm_sys_method_more_specific_p |
80662eda | 2243 | { |
4057a3e0 MV |
2244 | SCM l, v, result; |
2245 | SCM *v_elts; | |
b1f57ea4 | 2246 | long i, len, m1_specs, m2_specs; |
4057a3e0 | 2247 | scm_t_array_handle handle; |
80662eda | 2248 | |
398d8ee1 KN |
2249 | SCM_VALIDATE_METHOD (1, m1); |
2250 | SCM_VALIDATE_METHOD (2, m2); | |
80662eda | 2251 | |
b1f57ea4 LC |
2252 | len = scm_ilength (targs); |
2253 | m1_specs = scm_ilength (SPEC_OF (m1)); | |
2254 | m2_specs = scm_ilength (SPEC_OF (m2)); | |
2255 | SCM_ASSERT ((len >= m1_specs) || (len >= m2_specs), | |
2256 | targs, SCM_ARG3, FUNC_NAME); | |
2257 | ||
2258 | /* Verify that all the arguments of TARGS are classes and place them | |
2259 | in a vector. */ | |
4057a3e0 | 2260 | |
00ffa0e7 | 2261 | v = scm_c_make_vector (len, SCM_EOL); |
4057a3e0 | 2262 | v_elts = scm_vector_writable_elements (v, &handle, NULL, NULL); |
80662eda | 2263 | |
b1f57ea4 LC |
2264 | for (i = 0, l = targs; |
2265 | i < len && scm_is_pair (l); | |
2266 | i++, l = SCM_CDR (l)) | |
4057a3e0 MV |
2267 | { |
2268 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); | |
b1f57ea4 | 2269 | v_elts[i] = SCM_CAR (l); |
4057a3e0 | 2270 | } |
4057a3e0 | 2271 | result = more_specificp (m1, m2, v_elts) ? SCM_BOOL_T: SCM_BOOL_F; |
c8857a4d MV |
2272 | |
2273 | scm_array_handle_release (&handle); | |
2274 | ||
4057a3e0 | 2275 | return result; |
80662eda | 2276 | } |
398d8ee1 | 2277 | #undef FUNC_NAME |
6d77c894 TTN |
2278 | |
2279 | ||
80662eda MD |
2280 | |
2281 | /****************************************************************************** | |
2282 | * | |
6d77c894 | 2283 | * Initializations |
80662eda MD |
2284 | * |
2285 | ******************************************************************************/ | |
2286 | ||
ae88d9bc AW |
2287 | /* Munge the CPL of C in place such that BEFORE appears before AFTER, |
2288 | assuming that currently the reverse is true. Recalculate slots and | |
2289 | associated getters-n-setters. */ | |
74b6d6e4 MD |
2290 | static void |
2291 | fix_cpl (SCM c, SCM before, SCM after) | |
2292 | { | |
2293 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2294 | SCM ls = scm_c_memq (after, cpl); | |
ae88d9bc AW |
2295 | SCM tail; |
2296 | ||
7888309b | 2297 | if (scm_is_false (ls)) |
74b6d6e4 MD |
2298 | /* if this condition occurs, fix_cpl should not be applied this way */ |
2299 | abort (); | |
ae88d9bc AW |
2300 | |
2301 | tail = scm_delq1_x (before, SCM_CDR (ls)); | |
74b6d6e4 MD |
2302 | SCM_SETCAR (ls, before); |
2303 | SCM_SETCDR (ls, scm_cons (after, tail)); | |
2304 | { | |
2305 | SCM dslots = SCM_SLOT (c, scm_si_direct_slots); | |
2306 | SCM slots = build_slots_list (maplist (dslots), cpl); | |
2307 | SCM g_n_s = compute_getters_n_setters (slots); | |
2308 | SCM_SET_SLOT (c, scm_si_slots, slots); | |
2309 | SCM_SET_SLOT (c, scm_si_getters_n_setters, g_n_s); | |
2310 | } | |
2311 | } | |
2312 | ||
80662eda MD |
2313 | |
2314 | static void | |
2315 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2316 | { | |
cc95e00a | 2317 | SCM tmp = scm_from_locale_symbol (name); |
6d77c894 | 2318 | |
f39448c5 AW |
2319 | *var = scm_basic_make_class (meta, tmp, |
2320 | scm_is_pair (super) ? super : scm_list_1 (super), | |
2321 | slots); | |
28d0871b | 2322 | scm_module_define (scm_module_goops, tmp, *var); |
80662eda MD |
2323 | } |
2324 | ||
2325 | ||
2326 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2327 | ||
2328 | static void | |
2329 | create_standard_classes (void) | |
2330 | { | |
2331 | SCM slots; | |
4a655e50 AW |
2332 | SCM method_slots = scm_list_n (scm_from_latin1_symbol ("generic-function"), |
2333 | scm_from_latin1_symbol ("specializers"), | |
6b80d352 | 2334 | sym_procedure, |
4a655e50 AW |
2335 | scm_from_latin1_symbol ("formals"), |
2336 | scm_from_latin1_symbol ("body"), | |
2337 | scm_from_latin1_symbol ("make-procedure"), | |
21497600 | 2338 | SCM_UNDEFINED); |
4a655e50 | 2339 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("slot-definition"), |
1afff620 KN |
2340 | k_init_keyword, |
2341 | k_slot_definition)); | |
4a655e50 AW |
2342 | SCM gf_slots = scm_list_4 (scm_from_latin1_symbol ("methods"), |
2343 | scm_list_3 (scm_from_latin1_symbol ("n-specialized"), | |
1afff620 KN |
2344 | k_init_value, |
2345 | SCM_INUM0), | |
4a655e50 | 2346 | scm_list_3 (scm_from_latin1_symbol ("extended-by"), |
bbf8d523 | 2347 | k_init_value, |
b6cf4d02 | 2348 | SCM_EOL), |
4a655e50 | 2349 | scm_from_latin1_symbol ("effective-methods")); |
a9a90a88 | 2350 | SCM setter_slots = scm_list_1 (sym_setter); |
4a655e50 | 2351 | SCM egf_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("extends"), |
bbf8d523 MD |
2352 | k_init_value, |
2353 | SCM_EOL)); | |
80662eda MD |
2354 | /* Foreign class slot classes */ |
2355 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2356 | scm_class_class, scm_class_top, SCM_EOL); | |
2357 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2358 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
b6cf4d02 AW |
2359 | make_stdcls (&scm_class_hidden, "<hidden-slot>", |
2360 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
80662eda MD |
2361 | make_stdcls (&scm_class_opaque, "<opaque-slot>", |
2362 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2363 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2364 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2365 | make_stdcls (&scm_class_self, "<self-slot>", | |
b6cf4d02 | 2366 | scm_class_class, scm_class_read_only, SCM_EOL); |
80662eda MD |
2367 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", |
2368 | scm_class_class, | |
1afff620 | 2369 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda | 2370 | SCM_EOL); |
b6cf4d02 AW |
2371 | make_stdcls (&scm_class_protected_hidden, "<protected-hidden-slot>", |
2372 | scm_class_class, | |
2373 | scm_list_2 (scm_class_protected, scm_class_hidden), | |
2374 | SCM_EOL); | |
80662eda MD |
2375 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", |
2376 | scm_class_class, | |
1afff620 | 2377 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2378 | SCM_EOL); |
2379 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2380 | scm_class_class, scm_class_protected, SCM_EOL); | |
2381 | make_stdcls (&scm_class_int, "<int-slot>", | |
2382 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2383 | make_stdcls (&scm_class_float, "<float-slot>", | |
2384 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2385 | make_stdcls (&scm_class_double, "<double-slot>", | |
2386 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2387 | ||
2388 | /* Continue initialization of class <class> */ | |
6d77c894 | 2389 | |
80662eda | 2390 | slots = build_class_class_slots (); |
dcb410ec DH |
2391 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2392 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2393 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2394 | compute_getters_n_setters (slots)); | |
6d77c894 | 2395 | |
80662eda MD |
2396 | /* scm_class_generic functions classes */ |
2397 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2398 | scm_class_class, scm_class_class, SCM_EOL); | |
51f66c91 | 2399 | make_stdcls (&scm_class_applicable_struct_class, "<applicable-struct-class>", |
80662eda | 2400 | scm_class_class, scm_class_procedure_class, SCM_EOL); |
2f652c68 | 2401 | SCM_SET_VTABLE_FLAGS (scm_class_applicable_struct_class, SCM_VTABLE_FLAG_APPLICABLE_VTABLE); |
80662eda MD |
2402 | make_stdcls (&scm_class_method, "<method>", |
2403 | scm_class_class, scm_class_object, method_slots); | |
f8af5c6d | 2404 | make_stdcls (&scm_class_accessor_method, "<accessor-method>", |
51f66c91 | 2405 | scm_class_class, scm_class_method, amethod_slots); |
74b6d6e4 MD |
2406 | make_stdcls (&scm_class_applicable, "<applicable>", |
2407 | scm_class_class, scm_class_top, SCM_EOL); | |
51f66c91 AW |
2408 | make_stdcls (&scm_class_applicable_struct, "<applicable-struct>", |
2409 | scm_class_applicable_struct_class, | |
74b6d6e4 | 2410 | scm_list_2 (scm_class_object, scm_class_applicable), |
51f66c91 | 2411 | scm_list_1 (sym_procedure)); |
80662eda | 2412 | make_stdcls (&scm_class_generic, "<generic>", |
51f66c91 | 2413 | scm_class_applicable_struct_class, scm_class_applicable_struct, gf_slots); |
80662eda | 2414 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 | 2415 | make_stdcls (&scm_class_extended_generic, "<extended-generic>", |
51f66c91 | 2416 | scm_class_applicable_struct_class, scm_class_generic, egf_slots); |
bbf8d523 | 2417 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic, SCM_CLASSF_PURE_GENERIC); |
80662eda | 2418 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", |
51f66c91 | 2419 | scm_class_applicable_struct_class, scm_class_generic, setter_slots); |
80662eda | 2420 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); |
f8af5c6d | 2421 | make_stdcls (&scm_class_accessor, "<accessor>", |
51f66c91 | 2422 | scm_class_applicable_struct_class, scm_class_generic_with_setter, SCM_EOL); |
f8af5c6d | 2423 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 MD |
2424 | make_stdcls (&scm_class_extended_generic_with_setter, |
2425 | "<extended-generic-with-setter>", | |
51f66c91 | 2426 | scm_class_applicable_struct_class, |
ae88d9bc AW |
2427 | scm_list_2 (scm_class_extended_generic, |
2428 | scm_class_generic_with_setter), | |
bbf8d523 MD |
2429 | SCM_EOL); |
2430 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter, | |
2431 | SCM_CLASSF_PURE_GENERIC); | |
74b6d6e4 | 2432 | make_stdcls (&scm_class_extended_accessor, "<extended-accessor>", |
51f66c91 | 2433 | scm_class_applicable_struct_class, |
74b6d6e4 MD |
2434 | scm_list_2 (scm_class_accessor, |
2435 | scm_class_extended_generic_with_setter), | |
2436 | SCM_EOL); | |
ae88d9bc | 2437 | /* <extended-generic> is misplaced. */ |
74b6d6e4 | 2438 | fix_cpl (scm_class_extended_accessor, |
ae88d9bc | 2439 | scm_class_extended_generic, scm_class_generic_with_setter); |
74b6d6e4 | 2440 | SCM_SET_CLASS_FLAGS (scm_class_extended_accessor, SCM_CLASSF_PURE_GENERIC); |
80662eda MD |
2441 | |
2442 | /* Primitive types classes */ | |
2443 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2444 | scm_class_class, scm_class_top, SCM_EOL); | |
2445 | make_stdcls (&scm_class_char, "<char>", | |
2446 | scm_class_class, scm_class_top, SCM_EOL); | |
2447 | make_stdcls (&scm_class_list, "<list>", | |
2448 | scm_class_class, scm_class_top, SCM_EOL); | |
2449 | make_stdcls (&scm_class_pair, "<pair>", | |
2450 | scm_class_class, scm_class_list, SCM_EOL); | |
2451 | make_stdcls (&scm_class_null, "<null>", | |
2452 | scm_class_class, scm_class_list, SCM_EOL); | |
2453 | make_stdcls (&scm_class_string, "<string>", | |
2454 | scm_class_class, scm_class_top, SCM_EOL); | |
2455 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2456 | scm_class_class, scm_class_top, SCM_EOL); | |
2457 | make_stdcls (&scm_class_vector, "<vector>", | |
2458 | scm_class_class, scm_class_top, SCM_EOL); | |
e2c2a699 AW |
2459 | make_stdcls (&class_foreign, "<foreign>", |
2460 | scm_class_class, scm_class_top, SCM_EOL); | |
9ea31741 AW |
2461 | make_stdcls (&class_hashtable, "<hashtable>", |
2462 | scm_class_class, scm_class_top, SCM_EOL); | |
2463 | make_stdcls (&class_fluid, "<fluid>", | |
2464 | scm_class_class, scm_class_top, SCM_EOL); | |
2465 | make_stdcls (&class_dynamic_state, "<dynamic-state>", | |
c99de5aa | 2466 | scm_class_class, scm_class_top, SCM_EOL); |
6f3b0cc2 AW |
2467 | make_stdcls (&class_frame, "<frame>", |
2468 | scm_class_class, scm_class_top, SCM_EOL); | |
2469 | make_stdcls (&class_objcode, "<objcode>", | |
2470 | scm_class_class, scm_class_top, SCM_EOL); | |
2471 | make_stdcls (&class_vm, "<vm>", | |
2472 | scm_class_class, scm_class_top, SCM_EOL); | |
2473 | make_stdcls (&class_vm_cont, "<vm-continuation>", | |
2474 | scm_class_class, scm_class_top, SCM_EOL); | |
f826a886 AW |
2475 | make_stdcls (&class_bytevector, "<bytevector>", |
2476 | scm_class_class, scm_class_top, SCM_EOL); | |
2477 | make_stdcls (&class_uvec, "<uvec>", | |
2478 | scm_class_class, class_bytevector, SCM_EOL); | |
80662eda MD |
2479 | make_stdcls (&scm_class_number, "<number>", |
2480 | scm_class_class, scm_class_top, SCM_EOL); | |
2481 | make_stdcls (&scm_class_complex, "<complex>", | |
2482 | scm_class_class, scm_class_number, SCM_EOL); | |
2483 | make_stdcls (&scm_class_real, "<real>", | |
2484 | scm_class_class, scm_class_complex, SCM_EOL); | |
2485 | make_stdcls (&scm_class_integer, "<integer>", | |
2486 | scm_class_class, scm_class_real, SCM_EOL); | |
f92e85f7 MV |
2487 | make_stdcls (&scm_class_fraction, "<fraction>", |
2488 | scm_class_class, scm_class_real, SCM_EOL); | |
80662eda MD |
2489 | make_stdcls (&scm_class_keyword, "<keyword>", |
2490 | scm_class_class, scm_class_top, SCM_EOL); | |
2491 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2492 | scm_class_class, scm_class_top, SCM_EOL); | |
2493 | make_stdcls (&scm_class_procedure, "<procedure>", | |
74b6d6e4 | 2494 | scm_class_procedure_class, scm_class_applicable, SCM_EOL); |
80662eda MD |
2495 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", |
2496 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2497 | make_stdcls (&scm_class_port, "<port>", | |
2498 | scm_class_class, scm_class_top, SCM_EOL); | |
2499 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2500 | scm_class_class, scm_class_port, SCM_EOL); | |
2501 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2502 | scm_class_class, scm_class_port, SCM_EOL); | |
2503 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2504 | scm_class_class, | |
1afff620 | 2505 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2506 | SCM_EOL); |
2507 | } | |
2508 | ||
2509 | /********************************************************************** | |
2510 | * | |
2511 | * Smob classes | |
2512 | * | |
2513 | **********************************************************************/ | |
2514 | ||
2515 | static SCM | |
da0e6c2b | 2516 | make_class_from_template (char const *template, char const *type_name, SCM supers, int applicablep) |
80662eda | 2517 | { |
28d0871b | 2518 | SCM name; |
80662eda MD |
2519 | if (type_name) |
2520 | { | |
2521 | char buffer[100]; | |
2522 | sprintf (buffer, template, type_name); | |
cc95e00a | 2523 | name = scm_from_locale_symbol (buffer); |
80662eda MD |
2524 | } |
2525 | else | |
2526 | name = SCM_GOOPS_UNBOUND; | |
2527 | ||
28d0871b AW |
2528 | return scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2529 | name, supers, SCM_EOL); | |
80662eda MD |
2530 | } |
2531 | ||
9db8cf16 MG |
2532 | static SCM |
2533 | make_class_from_symbol (SCM type_name_sym, SCM supers, int applicablep) | |
2534 | { | |
28d0871b AW |
2535 | SCM name; |
2536 | ||
393baa8a | 2537 | if (scm_is_true (type_name_sym)) |
9db8cf16 MG |
2538 | { |
2539 | name = scm_string_append (scm_list_3 (scm_from_locale_string ("<"), | |
2540 | scm_symbol_to_string (type_name_sym), | |
2541 | scm_from_locale_string (">"))); | |
2542 | name = scm_string_to_symbol (name); | |
2543 | } | |
2544 | else | |
2545 | name = SCM_GOOPS_UNBOUND; | |
2546 | ||
28d0871b AW |
2547 | return scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2548 | name, supers, SCM_EOL); | |
9db8cf16 MG |
2549 | } |
2550 | ||
80662eda | 2551 | SCM |
da0e6c2b | 2552 | scm_make_extended_class (char const *type_name, int applicablep) |
80662eda MD |
2553 | { |
2554 | return make_class_from_template ("<%s>", | |
2555 | type_name, | |
74b6d6e4 MD |
2556 | scm_list_1 (applicablep |
2557 | ? scm_class_applicable | |
2558 | : scm_class_top), | |
2559 | applicablep); | |
2560 | } | |
2561 | ||
9db8cf16 MG |
2562 | static SCM |
2563 | scm_make_extended_class_from_symbol (SCM type_name_sym, int applicablep) | |
2564 | { | |
2565 | return make_class_from_symbol (type_name_sym, | |
2566 | scm_list_1 (applicablep | |
2567 | ? scm_class_applicable | |
2568 | : scm_class_top), | |
2569 | applicablep); | |
2570 | } | |
2571 | ||
74b6d6e4 MD |
2572 | void |
2573 | scm_i_inherit_applicable (SCM c) | |
2574 | { | |
2575 | if (!SCM_SUBCLASSP (c, scm_class_applicable)) | |
2576 | { | |
2577 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
2578 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2579 | /* patch scm_class_applicable into direct-supers */ | |
2580 | SCM top = scm_c_memq (scm_class_top, dsupers); | |
7888309b | 2581 | if (scm_is_false (top)) |
74b6d6e4 MD |
2582 | dsupers = scm_append (scm_list_2 (dsupers, |
2583 | scm_list_1 (scm_class_applicable))); | |
2584 | else | |
2585 | { | |
2586 | SCM_SETCAR (top, scm_class_applicable); | |
2587 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2588 | } | |
2589 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
2590 | /* patch scm_class_applicable into cpl */ | |
2591 | top = scm_c_memq (scm_class_top, cpl); | |
7888309b | 2592 | if (scm_is_false (top)) |
74b6d6e4 MD |
2593 | abort (); |
2594 | else | |
2595 | { | |
2596 | SCM_SETCAR (top, scm_class_applicable); | |
2597 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2598 | } | |
2599 | /* add class to direct-subclasses of scm_class_applicable */ | |
2600 | SCM_SET_SLOT (scm_class_applicable, | |
2601 | scm_si_direct_subclasses, | |
2602 | scm_cons (c, SCM_SLOT (scm_class_applicable, | |
2603 | scm_si_direct_subclasses))); | |
2604 | } | |
80662eda MD |
2605 | } |
2606 | ||
2607 | static void | |
2608 | create_smob_classes (void) | |
2609 | { | |
c014a02e | 2610 | long i; |
80662eda | 2611 | |
c891a40e | 2612 | for (i = 0; i < SCM_I_MAX_SMOB_TYPE_COUNT; ++i) |
393baa8a | 2613 | scm_smob_class[i] = SCM_BOOL_F; |
80662eda | 2614 | |
80662eda | 2615 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; |
6d77c894 | 2616 | |
80662eda | 2617 | for (i = 0; i < scm_numsmob; ++i) |
393baa8a | 2618 | if (scm_is_false (scm_smob_class[i])) |
74b6d6e4 MD |
2619 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), |
2620 | scm_smobs[i].apply != 0); | |
80662eda MD |
2621 | } |
2622 | ||
2623 | void | |
c014a02e | 2624 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2625 | { |
2626 | SCM c, class = make_class_from_template ("<%s-port>", | |
2627 | type_name, | |
74b6d6e4 MD |
2628 | scm_list_1 (scm_class_port), |
2629 | 0); | |
80662eda MD |
2630 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2631 | = make_class_from_template ("<%s-input-port>", | |
2632 | type_name, | |
74b6d6e4 MD |
2633 | scm_list_2 (class, scm_class_input_port), |
2634 | 0); | |
80662eda MD |
2635 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2636 | = make_class_from_template ("<%s-output-port>", | |
2637 | type_name, | |
74b6d6e4 MD |
2638 | scm_list_2 (class, scm_class_output_port), |
2639 | 0); | |
80662eda MD |
2640 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2641 | = c | |
2642 | = make_class_from_template ("<%s-input-output-port>", | |
2643 | type_name, | |
74b6d6e4 MD |
2644 | scm_list_2 (class, scm_class_input_output_port), |
2645 | 0); | |
80662eda | 2646 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2647 | SCM_SET_SLOT (c, scm_si_cpl, |
2648 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2649 | } |
2650 | ||
2651 | static void | |
2652 | create_port_classes (void) | |
2653 | { | |
c014a02e | 2654 | long i; |
80662eda | 2655 | |
80662eda MD |
2656 | for (i = 0; i < scm_numptob; ++i) |
2657 | scm_make_port_classes (i, SCM_PTOBNAME (i)); | |
2658 | } | |
2659 | ||
2660 | static SCM | |
74b6d6e4 MD |
2661 | make_struct_class (void *closure SCM_UNUSED, |
2662 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 2663 | { |
f3c6a02c AW |
2664 | if (scm_is_false (data)) |
2665 | scm_i_define_class_for_vtable (vtable); | |
80662eda MD |
2666 | return SCM_UNSPECIFIED; |
2667 | } | |
2668 | ||
2669 | static void | |
2670 | create_struct_classes (void) | |
2671 | { | |
ea742d29 | 2672 | /* FIXME: take the vtable_class_map while initializing goops? */ |
f3c6a02c AW |
2673 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, |
2674 | vtable_class_map); | |
80662eda MD |
2675 | } |
2676 | ||
2677 | /********************************************************************** | |
2678 | * | |
2679 | * C interface | |
2680 | * | |
2681 | **********************************************************************/ | |
2682 | ||
2683 | void | |
2684 | scm_load_goops () | |
2685 | { | |
2686 | if (!goops_loaded_p) | |
abd28220 | 2687 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2688 | } |
2689 | ||
e11208ca | 2690 | |
80662eda MD |
2691 | SCM_SYMBOL (sym_o, "o"); |
2692 | SCM_SYMBOL (sym_x, "x"); | |
2693 | ||
2694 | SCM_KEYWORD (k_accessor, "accessor"); | |
2695 | SCM_KEYWORD (k_getter, "getter"); | |
2696 | ||
80662eda MD |
2697 | SCM |
2698 | scm_ensure_accessor (SCM name) | |
2699 | { | |
fdc28395 | 2700 | SCM gf = scm_call_2 (SCM_TOP_LEVEL_LOOKUP_CLOSURE, name, SCM_BOOL_F); |
f8af5c6d | 2701 | if (!SCM_IS_A_P (gf, scm_class_accessor)) |
80662eda | 2702 | { |
1afff620 | 2703 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
f8af5c6d | 2704 | gf = scm_make (scm_list_5 (scm_class_accessor, |
1afff620 | 2705 | k_name, name, k_setter, gf)); |
80662eda MD |
2706 | } |
2707 | return gf; | |
2708 | } | |
2709 | ||
80662eda MD |
2710 | #ifdef GUILE_DEBUG |
2711 | /* | |
2712 | * Debugging utilities | |
2713 | */ | |
2714 | ||
398d8ee1 KN |
2715 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2716 | (SCM obj), | |
6bcefd15 | 2717 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2718 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2719 | { |
7888309b | 2720 | return scm_from_bool (SCM_PUREGENERICP (obj)); |
80662eda | 2721 | } |
398d8ee1 | 2722 | #undef FUNC_NAME |
80662eda MD |
2723 | |
2724 | #endif /* GUILE_DEBUG */ | |
2725 | ||
2726 | /* | |
2727 | * Initialization | |
2728 | */ | |
2729 | ||
398d8ee1 KN |
2730 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2731 | (), | |
6bcefd15 MG |
2732 | "Announce that GOOPS is loaded and perform initialization\n" |
2733 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2734 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2735 | { |
2736 | goops_loaded_p = 1; | |
86d31dfe | 2737 | var_compute_applicable_methods = |
f39448c5 | 2738 | scm_module_variable (scm_module_goops, sym_compute_applicable_methods); |
bef95911 | 2739 | var_slot_unbound = |
f39448c5 | 2740 | scm_module_variable (scm_module_goops, sym_slot_unbound); |
bef95911 | 2741 | var_slot_missing = |
f39448c5 | 2742 | scm_module_variable (scm_module_goops, sym_slot_missing); |
bef95911 | 2743 | var_compute_cpl = |
f39448c5 | 2744 | scm_module_variable (scm_module_goops, sym_compute_cpl); |
bef95911 | 2745 | var_no_applicable_method = |
f39448c5 | 2746 | scm_module_variable (scm_module_goops, sym_no_applicable_method); |
bef95911 | 2747 | var_change_class = |
f39448c5 | 2748 | scm_module_variable (scm_module_goops, sym_change_class); |
a48d60b1 | 2749 | setup_extended_primitive_generics (); |
80662eda MD |
2750 | return SCM_UNSPECIFIED; |
2751 | } | |
398d8ee1 | 2752 | #undef FUNC_NAME |
80662eda MD |
2753 | |
2754 | SCM scm_module_goops; | |
2755 | ||
abd28220 MV |
2756 | SCM |
2757 | scm_init_goops_builtins (void) | |
80662eda | 2758 | { |
abd28220 | 2759 | scm_module_goops = scm_current_module (); |
80662eda | 2760 | |
80662eda MD |
2761 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); |
2762 | ||
2763 | #include "libguile/goops.x" | |
2764 | ||
bb764c0e | 2765 | hell = scm_calloc (hell_size * sizeof (*hell)); |
f39448c5 | 2766 | hell_mutex = scm_make_mutex (); |
80662eda MD |
2767 | |
2768 | create_basic_classes (); | |
2769 | create_standard_classes (); | |
2770 | create_smob_classes (); | |
2771 | create_struct_classes (); | |
2772 | create_port_classes (); | |
2773 | ||
2774 | { | |
4a655e50 | 2775 | SCM name = scm_from_latin1_symbol ("no-applicable-method"); |
f39448c5 AW |
2776 | scm_no_applicable_method = |
2777 | scm_make (scm_list_3 (scm_class_generic, k_name, name)); | |
28d0871b | 2778 | scm_module_define (scm_module_goops, name, scm_no_applicable_method); |
80662eda | 2779 | } |
abd28220 MV |
2780 | |
2781 | return SCM_UNSPECIFIED; | |
80662eda MD |
2782 | } |
2783 | ||
2784 | void | |
abd28220 | 2785 | scm_init_goops () |
80662eda | 2786 | { |
9a441ddb MV |
2787 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2788 | scm_init_goops_builtins); | |
80662eda | 2789 | } |
23437298 DH |
2790 | |
2791 | /* | |
2792 | Local Variables: | |
2793 | c-file-style: "gnu" | |
2794 | End: | |
2795 | */ |