Commit | Line | Data |
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3f48638c | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011,2012 |
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" | |
efcebb5b | 56 | #include "libguile/vm.h" |
80662eda | 57 | |
ca83b028 | 58 | #include "libguile/validate.h" |
80662eda MD |
59 | #include "libguile/goops.h" |
60 | ||
80662eda MD |
61 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
62 | ||
efcebb5b AW |
63 | /* Port classes */ |
64 | #define SCM_IN_PCLASS_INDEX 0 | |
65 | #define SCM_OUT_PCLASS_INDEX SCM_I_MAX_PORT_TYPE_COUNT | |
66 | #define SCM_INOUT_PCLASS_INDEX (2 * SCM_I_MAX_PORT_TYPE_COUNT) | |
67 | ||
bef95911 AW |
68 | /* this file is a mess. in theory, though, we shouldn't have many SCM references |
69 | -- most of the references should be to vars. */ | |
70 | ||
71 | static SCM var_slot_unbound = SCM_BOOL_F; | |
72 | static SCM var_slot_missing = SCM_BOOL_F; | |
73 | static SCM var_compute_cpl = SCM_BOOL_F; | |
74 | static SCM var_no_applicable_method = SCM_BOOL_F; | |
bef95911 AW |
75 | static SCM var_change_class = SCM_BOOL_F; |
76 | ||
77 | SCM_SYMBOL (sym_slot_unbound, "slot-unbound"); | |
78 | SCM_SYMBOL (sym_slot_missing, "slot-missing"); | |
79 | SCM_SYMBOL (sym_compute_cpl, "compute-cpl"); | |
80 | SCM_SYMBOL (sym_no_applicable_method, "no-applicable-method"); | |
81 | SCM_SYMBOL (sym_memoize_method_x, "memoize-method!"); | |
82 | SCM_SYMBOL (sym_change_class, "change-class"); | |
83 | ||
84 | SCM_VARIABLE (scm_var_make_extended_generic, "make-extended-generic"); | |
85 | ||
86 | ||
80662eda MD |
87 | /* Class redefinition protocol: |
88 | ||
89 | A class is represented by a heap header h1 which points to a | |
90 | malloc:ed memory block m1. | |
91 | ||
92 | When a new version of a class is created, a new header h2 and | |
93 | memory block m2 are allocated. The headers h1 and h2 then switch | |
94 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
95 | bound to h1 will point to the new class at the same time as h2 will | |
7346de61 | 96 | be a handle which the GC will use to free m1. |
80662eda MD |
97 | |
98 | The `redefined' slot of m1 will be set to point to h1. An old | |
7346de61 | 99 | instance will have its class pointer (the CAR of the heap header) |
80662eda MD |
100 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates |
101 | the class modification and the new class pointer can be found via | |
102 | h1. | |
103 | */ | |
104 | ||
0fd7dcd3 MD |
105 | #define TEST_CHANGE_CLASS(obj, class) \ |
106 | { \ | |
107 | class = SCM_CLASS_OF (obj); \ | |
7888309b | 108 | if (scm_is_true (SCM_OBJ_CLASS_REDEF (obj))) \ |
0fd7dcd3 MD |
109 | { \ |
110 | scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj));\ | |
111 | class = SCM_CLASS_OF (obj); \ | |
112 | } \ | |
80662eda MD |
113 | } |
114 | ||
115 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
116 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
117 | ||
118 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
d223c3fc | 119 | #define SCM_GOOPS_UNBOUNDP(x) (scm_is_eq (x, SCM_GOOPS_UNBOUND)) |
80662eda MD |
120 | |
121 | static int goops_loaded_p = 0; | |
92c2555f | 122 | static scm_t_rstate *goops_rstate; |
80662eda | 123 | |
539d5410 MV |
124 | /* These variables are filled in by the object system when loaded. */ |
125 | SCM scm_class_boolean, scm_class_char, scm_class_pair; | |
126 | SCM scm_class_procedure, scm_class_string, scm_class_symbol; | |
ea68d342 | 127 | SCM scm_class_primitive_generic; |
9ea31741 | 128 | SCM scm_class_vector, scm_class_null; |
539d5410 MV |
129 | SCM scm_class_integer, scm_class_real, scm_class_complex, scm_class_fraction; |
130 | SCM scm_class_unknown; | |
80662eda | 131 | SCM scm_class_top, scm_class_object, scm_class_class; |
74b6d6e4 | 132 | SCM scm_class_applicable; |
51f66c91 | 133 | SCM scm_class_applicable_struct, scm_class_applicable_struct_with_setter; |
bbf8d523 | 134 | SCM scm_class_generic, scm_class_generic_with_setter; |
f8af5c6d | 135 | SCM scm_class_accessor; |
bbf8d523 | 136 | SCM scm_class_extended_generic, scm_class_extended_generic_with_setter; |
74b6d6e4 | 137 | SCM scm_class_extended_accessor; |
bbf8d523 | 138 | SCM scm_class_method; |
51f66c91 | 139 | SCM scm_class_accessor_method; |
80662eda | 140 | SCM scm_class_procedure_class; |
51f66c91 | 141 | SCM scm_class_applicable_struct_class; |
80662eda MD |
142 | SCM scm_class_number, scm_class_list; |
143 | SCM scm_class_keyword; | |
144 | SCM scm_class_port, scm_class_input_output_port; | |
145 | SCM scm_class_input_port, scm_class_output_port; | |
80662eda MD |
146 | SCM scm_class_foreign_slot; |
147 | SCM scm_class_self, scm_class_protected; | |
b6cf4d02 AW |
148 | SCM scm_class_hidden, scm_class_opaque, scm_class_read_only; |
149 | SCM scm_class_protected_hidden, scm_class_protected_opaque, scm_class_protected_read_only; | |
80662eda MD |
150 | SCM scm_class_scm; |
151 | SCM scm_class_int, scm_class_float, scm_class_double; | |
152 | ||
e2c2a699 | 153 | static SCM class_foreign; |
9ea31741 AW |
154 | static SCM class_hashtable; |
155 | static SCM class_fluid; | |
156 | static SCM class_dynamic_state; | |
6f3b0cc2 AW |
157 | static SCM class_frame; |
158 | static SCM class_objcode; | |
159 | static SCM class_vm; | |
160 | static SCM class_vm_cont; | |
f826a886 AW |
161 | static SCM class_bytevector; |
162 | static SCM class_uvec; | |
b2637c98 | 163 | static SCM class_array; |
ff1feca9 | 164 | static SCM class_bitvector; |
9ea31741 | 165 | |
f3c6a02c AW |
166 | static SCM vtable_class_map = SCM_BOOL_F; |
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 | ||
203a92b6 | 194 | scm_i_pthread_mutex_lock (&scm_i_misc_mutex); |
f3c6a02c | 195 | if (scm_is_false (vtable_class_map)) |
203a92b6 AW |
196 | vtable_class_map = scm_c_make_weak_table (0, SCM_WEAK_TABLE_KIND_KEY); |
197 | scm_i_pthread_mutex_unlock (&scm_i_misc_mutex); | |
f3c6a02c AW |
198 | |
199 | if (scm_is_false (scm_struct_vtable_p (vtable))) | |
200 | abort (); | |
201 | ||
203a92b6 | 202 | class = scm_weak_table_refq (vtable_class_map, vtable, SCM_BOOL_F); |
ea742d29 | 203 | |
f3c6a02c AW |
204 | if (scm_is_false (class)) |
205 | { | |
206 | if (SCM_UNPACK (scm_class_class)) | |
207 | { | |
208 | SCM name = SCM_VTABLE_NAME (vtable); | |
209 | if (!scm_is_symbol (name)) | |
210 | name = scm_string_to_symbol (scm_nullstr); | |
211 | ||
212 | class = scm_make_extended_class_from_symbol | |
213 | (name, SCM_VTABLE_FLAG_IS_SET (vtable, SCM_VTABLE_FLAG_APPLICABLE)); | |
214 | } | |
215 | else | |
216 | /* `create_struct_classes' will fill this in later. */ | |
217 | class = SCM_BOOL_F; | |
ea742d29 AW |
218 | |
219 | /* Don't worry about races. This only happens when creating a | |
220 | vtable, which happens by definition in one thread. */ | |
203a92b6 | 221 | scm_weak_table_putq_x (vtable_class_map, vtable, class); |
f3c6a02c AW |
222 | } |
223 | ||
224 | return class; | |
225 | } | |
226 | ||
539d5410 MV |
227 | /* This function is used for efficient type dispatch. */ |
228 | SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0, | |
229 | (SCM x), | |
230 | "Return the class of @var{x}.") | |
231 | #define FUNC_NAME s_scm_class_of | |
232 | { | |
233 | switch (SCM_ITAG3 (x)) | |
234 | { | |
235 | case scm_tc3_int_1: | |
236 | case scm_tc3_int_2: | |
237 | return scm_class_integer; | |
238 | ||
239 | case scm_tc3_imm24: | |
240 | if (SCM_CHARP (x)) | |
241 | return scm_class_char; | |
242 | else if (scm_is_bool (x)) | |
243 | return scm_class_boolean; | |
244 | else if (scm_is_null (x)) | |
245 | return scm_class_null; | |
246 | else | |
247 | return scm_class_unknown; | |
248 | ||
249 | case scm_tc3_cons: | |
250 | switch (SCM_TYP7 (x)) | |
251 | { | |
252 | case scm_tcs_cons_nimcar: | |
253 | return scm_class_pair; | |
539d5410 MV |
254 | case scm_tc7_symbol: |
255 | return scm_class_symbol; | |
256 | case scm_tc7_vector: | |
257 | case scm_tc7_wvect: | |
258 | return scm_class_vector; | |
5b46a8c2 | 259 | case scm_tc7_pointer: |
e2c2a699 | 260 | return class_foreign; |
c99de5aa | 261 | case scm_tc7_hashtable: |
9ea31741 AW |
262 | return class_hashtable; |
263 | case scm_tc7_fluid: | |
264 | return class_fluid; | |
265 | case scm_tc7_dynamic_state: | |
266 | return class_dynamic_state; | |
6f3b0cc2 AW |
267 | case scm_tc7_frame: |
268 | return class_frame; | |
269 | case scm_tc7_objcode: | |
270 | return class_objcode; | |
271 | case scm_tc7_vm: | |
272 | return class_vm; | |
273 | case scm_tc7_vm_cont: | |
274 | return class_vm_cont; | |
f826a886 AW |
275 | case scm_tc7_bytevector: |
276 | if (SCM_BYTEVECTOR_ELEMENT_TYPE (x) == SCM_ARRAY_ELEMENT_TYPE_VU8) | |
277 | return class_bytevector; | |
278 | else | |
279 | return class_uvec; | |
b2637c98 AW |
280 | case scm_tc7_array: |
281 | return class_array; | |
ff1feca9 AW |
282 | case scm_tc7_bitvector: |
283 | return class_bitvector; | |
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); | |
13d807b7 | 369 | while (scm_is_pair (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; | |
13d807b7 | 383 | while (scm_is_pair (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 | ||
13d807b7 | 418 | if (!scm_is_pair (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 | ||
13d807b7 AW |
433 | static void |
434 | check_cpl (SCM slots, SCM bslots) | |
435 | { | |
436 | for (; scm_is_pair (bslots); bslots = SCM_CDR (bslots)) | |
437 | if (scm_is_true (scm_assq (SCM_CAAR (bslots), slots))) | |
438 | scm_misc_error ("init-object", "a predefined <class> inherited " | |
439 | "field cannot be redefined", SCM_EOL); | |
440 | } | |
441 | ||
442 | static SCM | |
443 | build_class_class_slots (void); | |
444 | ||
80662eda MD |
445 | static SCM |
446 | build_slots_list (SCM dslots, SCM cpl) | |
447 | { | |
13d807b7 AW |
448 | SCM bslots, class_slots; |
449 | int classp; | |
450 | SCM res = dslots; | |
451 | ||
452 | class_slots = SCM_EOL; | |
453 | classp = scm_is_true (scm_memq (scm_class_class, cpl)); | |
454 | ||
455 | if (classp) | |
456 | { | |
457 | bslots = build_class_class_slots (); | |
458 | check_cpl (res, bslots); | |
459 | } | |
460 | else | |
461 | bslots = SCM_EOL; | |
462 | ||
463 | if (scm_is_pair (cpl)) | |
464 | { | |
465 | for (cpl = SCM_CDR (cpl); scm_is_pair (cpl); cpl = SCM_CDR (cpl)) | |
466 | { | |
467 | SCM new_slots = SCM_SLOT (SCM_CAR (cpl), | |
468 | scm_si_direct_slots); | |
469 | if (classp) | |
470 | { | |
471 | if (!scm_is_eq (SCM_CAR (cpl), scm_class_class)) | |
472 | check_cpl (new_slots, bslots); | |
473 | else | |
474 | { | |
475 | /* Move class slots to the head of the list. */ | |
476 | class_slots = new_slots; | |
477 | continue; | |
478 | } | |
479 | } | |
480 | res = scm_append (scm_list_2 (new_slots, res)); | |
481 | } | |
482 | } | |
483 | else | |
484 | scm_misc_error ("%compute-slots", "malformed cpl argument in " | |
485 | "build_slots_list", SCM_EOL); | |
80662eda | 486 | |
13d807b7 AW |
487 | /* make sure to add the <class> slots to the head of the list */ |
488 | if (classp) | |
489 | res = scm_append (scm_list_2 (class_slots, res)); | |
80662eda MD |
490 | |
491 | /* res contains a list of slots. Remove slots which appears more than once */ | |
492 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
493 | } | |
494 | ||
495 | static SCM | |
496 | maplist (SCM ls) | |
497 | { | |
498 | SCM orig = ls; | |
d2e53ed6 | 499 | while (!scm_is_null (ls)) |
80662eda | 500 | { |
13d807b7 AW |
501 | if (!scm_is_pair (ls)) |
502 | scm_misc_error ("%compute-slots", "malformed ls argument in " | |
503 | "maplist", SCM_EOL); | |
d2e53ed6 | 504 | if (!scm_is_pair (SCM_CAR (ls))) |
13d807b7 | 505 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
80662eda MD |
506 | ls = SCM_CDR (ls); |
507 | } | |
508 | return orig; | |
509 | } | |
510 | ||
80662eda | 511 | |
23437298 DH |
512 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
513 | (SCM class), | |
5352393c MG |
514 | "Return a list consisting of the names of all slots belonging to\n" |
515 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
6d77c894 | 516 | "its superclasses.") |
23437298 | 517 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 518 | { |
398d8ee1 | 519 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
520 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
521 | SCM_SLOT (class, scm_si_cpl)); | |
522 | } | |
23437298 DH |
523 | #undef FUNC_NAME |
524 | ||
80662eda MD |
525 | |
526 | /****************************************************************************** | |
527 | * | |
528 | * compute-getters-n-setters | |
6d77c894 TTN |
529 | * |
530 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 531 | * classes and will be overloaded in Scheme. |
80662eda MD |
532 | * |
533 | ******************************************************************************/ | |
534 | ||
535 | SCM_KEYWORD (k_init_value, "init-value"); | |
536 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
537 | ||
538 | static SCM | |
539 | compute_getters_n_setters (SCM slots) | |
540 | { | |
541 | SCM res = SCM_EOL; | |
542 | SCM *cdrloc = &res; | |
c014a02e | 543 | long i = 0; |
80662eda | 544 | |
d2e53ed6 | 545 | for ( ; !scm_is_null (slots); slots = SCM_CDR (slots)) |
80662eda MD |
546 | { |
547 | SCM init = SCM_BOOL_F; | |
548 | SCM options = SCM_CDAR (slots); | |
d2e53ed6 | 549 | if (!scm_is_null (options)) |
80662eda | 550 | { |
b2b33168 AW |
551 | init = scm_get_keyword (k_init_value, options, SCM_PACK (0)); |
552 | if (SCM_UNPACK (init)) | |
366ecaec | 553 | { |
9d019f9b AW |
554 | init = scm_primitive_eval (scm_list_3 (scm_sym_lambda, |
555 | SCM_EOL, | |
556 | scm_list_2 (scm_sym_quote, | |
557 | init))); | |
366ecaec | 558 | } |
80662eda MD |
559 | else |
560 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
561 | } | |
562 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
563 | scm_cons (init, | |
e11e83f3 | 564 | scm_from_int (i++))), |
80662eda MD |
565 | SCM_EOL); |
566 | cdrloc = SCM_CDRLOC (*cdrloc); | |
567 | } | |
568 | return res; | |
569 | } | |
570 | ||
571 | /****************************************************************************** | |
572 | * | |
573 | * initialize-object | |
574 | * | |
575 | ******************************************************************************/ | |
576 | ||
577 | /*fixme* Manufacture keywords in advance */ | |
578 | SCM | |
c014a02e | 579 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 580 | { |
c014a02e | 581 | long i; |
23437298 DH |
582 | |
583 | for (i = 0; i != len; i += 2) | |
80662eda | 584 | { |
23437298 DH |
585 | SCM obj = SCM_CAR (l); |
586 | ||
c598539a | 587 | if (!scm_is_keyword (obj)) |
1afff620 | 588 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
bc36d050 | 589 | else if (scm_is_eq (obj, key)) |
80662eda | 590 | return SCM_CADR (l); |
23437298 DH |
591 | else |
592 | l = SCM_CDDR (l); | |
80662eda | 593 | } |
23437298 | 594 | |
80662eda MD |
595 | return default_value; |
596 | } | |
597 | ||
80662eda | 598 | |
23437298 DH |
599 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
600 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
601 | "Determine an associated value for the keyword @var{key} from\n" |
602 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
603 | "number of elements, where, starting with the first, every\n" | |
604 | "second element is a keyword, followed by its associated value.\n" | |
605 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
606 | "@var{default_value} is returned.") | |
23437298 | 607 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 608 | { |
c014a02e | 609 | long len; |
23437298 | 610 | |
c598539a | 611 | SCM_ASSERT (scm_is_keyword (key), key, SCM_ARG1, FUNC_NAME); |
80662eda | 612 | len = scm_ilength (l); |
b6311c08 | 613 | if (len < 0 || len % 2 == 1) |
1afff620 | 614 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
615 | |
616 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 617 | } |
23437298 DH |
618 | #undef FUNC_NAME |
619 | ||
80662eda | 620 | |
80662eda MD |
621 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
622 | ||
623 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
624 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
625 | ||
398d8ee1 KN |
626 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
627 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
628 | "Initialize the object @var{obj} with the given arguments\n" |
629 | "@var{initargs}.") | |
398d8ee1 | 630 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
631 | { |
632 | SCM tmp, get_n_set, slots; | |
633 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 634 | long n_initargs; |
80662eda | 635 | |
398d8ee1 | 636 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 637 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 638 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
6d77c894 | 639 | |
80662eda MD |
640 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); |
641 | slots = SCM_SLOT (class, scm_si_slots); | |
6d77c894 | 642 | |
80662eda MD |
643 | /* See for each slot how it must be initialized */ |
644 | for (; | |
d2e53ed6 | 645 | !scm_is_null (slots); |
80662eda MD |
646 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) |
647 | { | |
648 | SCM slot_name = SCM_CAR (slots); | |
b2b33168 | 649 | SCM slot_value = SCM_PACK (0); |
6d77c894 | 650 | |
d2e53ed6 | 651 | if (!scm_is_null (SCM_CDR (slot_name))) |
80662eda MD |
652 | { |
653 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 654 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 655 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 656 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 657 | scm_list_1 (slot_name)); |
80662eda MD |
658 | tmp = scm_i_get_keyword (k_init_keyword, |
659 | SCM_CDR (slot_name), | |
660 | n, | |
b2b33168 | 661 | SCM_PACK (0), |
398d8ee1 | 662 | FUNC_NAME); |
80662eda | 663 | slot_name = SCM_CAR (slot_name); |
b2b33168 | 664 | if (SCM_UNPACK (tmp)) |
80662eda MD |
665 | { |
666 | /* an initarg was provided for this slot */ | |
c598539a | 667 | if (!scm_is_keyword (tmp)) |
398d8ee1 | 668 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 669 | scm_list_1 (tmp)); |
80662eda MD |
670 | slot_value = scm_i_get_keyword (tmp, |
671 | initargs, | |
672 | n_initargs, | |
b2b33168 | 673 | SCM_PACK (0), |
398d8ee1 | 674 | FUNC_NAME); |
80662eda MD |
675 | } |
676 | } | |
677 | ||
b2b33168 | 678 | if (SCM_UNPACK (slot_value)) |
80662eda MD |
679 | /* set slot to provided value */ |
680 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
681 | else | |
682 | { | |
683 | /* set slot to its :init-form if it exists */ | |
684 | tmp = SCM_CADAR (get_n_set); | |
7888309b | 685 | if (scm_is_true (tmp)) |
80662eda MD |
686 | { |
687 | slot_value = get_slot_value (class, obj, SCM_CAR (get_n_set)); | |
688 | if (SCM_GOOPS_UNBOUNDP (slot_value)) | |
fd7ac322 AW |
689 | set_slot_value (class, |
690 | obj, | |
691 | SCM_CAR (get_n_set), | |
692 | scm_call_0 (tmp)); | |
80662eda MD |
693 | } |
694 | } | |
695 | } | |
6d77c894 | 696 | |
80662eda MD |
697 | return obj; |
698 | } | |
398d8ee1 | 699 | #undef FUNC_NAME |
80662eda | 700 | |
21ab2aeb MD |
701 | /* NOTE: The following macros are interdependent with code |
702 | * in goops.scm:compute-getters-n-setters | |
703 | */ | |
704 | #define SCM_GNS_INSTANCE_ALLOCATED_P(gns) \ | |
e11e83f3 | 705 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
d2e53ed6 MV |
706 | || (scm_is_pair (SCM_CDDR (gns)) \ |
707 | && scm_is_pair (SCM_CDDDR (gns)) \ | |
708 | && scm_is_pair (SCM_CDDDDR (gns)))) | |
21ab2aeb | 709 | #define SCM_GNS_INDEX(gns) \ |
e11e83f3 MV |
710 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
711 | ? SCM_I_INUM (SCM_CDDR (gns)) \ | |
712 | : scm_to_long (SCM_CAR (SCM_CDDDDR (gns)))) | |
21ab2aeb | 713 | #define SCM_GNS_SIZE(gns) \ |
e11e83f3 | 714 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
21ab2aeb | 715 | ? 1 \ |
e11e83f3 | 716 | : scm_to_long (SCM_CADR (SCM_CDDDDR (gns)))) |
80662eda MD |
717 | |
718 | SCM_KEYWORD (k_class, "class"); | |
b46fae00 MD |
719 | SCM_KEYWORD (k_allocation, "allocation"); |
720 | SCM_KEYWORD (k_instance, "instance"); | |
80662eda | 721 | |
398d8ee1 KN |
722 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
723 | (SCM class), | |
724 | "") | |
725 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 726 | { |
21ab2aeb | 727 | SCM slots, getters_n_setters, nfields; |
6b80d352 DH |
728 | unsigned long int n, i; |
729 | char *s; | |
cc95e00a | 730 | SCM layout; |
80662eda | 731 | |
398d8ee1 | 732 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda | 733 | slots = SCM_SLOT (class, scm_si_slots); |
21ab2aeb | 734 | getters_n_setters = SCM_SLOT (class, scm_si_getters_n_setters); |
80662eda | 735 | nfields = SCM_SLOT (class, scm_si_nfields); |
e11e83f3 | 736 | if (!SCM_I_INUMP (nfields) || SCM_I_INUM (nfields) < 0) |
398d8ee1 | 737 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 738 | scm_list_1 (nfields)); |
e11e83f3 | 739 | n = 2 * SCM_I_INUM (nfields); |
80662eda MD |
740 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 |
741 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 742 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 743 | scm_list_1 (nfields)); |
6d77c894 | 744 | |
190d4b0d | 745 | layout = scm_i_make_string (n, &s, 0); |
21ab2aeb | 746 | i = 0; |
d2e53ed6 | 747 | while (scm_is_pair (getters_n_setters)) |
80662eda | 748 | { |
21ab2aeb | 749 | if (SCM_GNS_INSTANCE_ALLOCATED_P (SCM_CAR (getters_n_setters))) |
b46fae00 | 750 | { |
21ab2aeb MD |
751 | SCM type; |
752 | int len, index, size; | |
753 | char p, a; | |
754 | ||
d2e53ed6 | 755 | if (i >= n || !scm_is_pair (slots)) |
21ab2aeb MD |
756 | goto inconsistent; |
757 | ||
758 | /* extract slot type */ | |
b46fae00 | 759 | len = scm_ilength (SCM_CDAR (slots)); |
21ab2aeb MD |
760 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), |
761 | len, SCM_BOOL_F, FUNC_NAME); | |
762 | /* determine slot GC protection and access mode */ | |
7888309b | 763 | if (scm_is_false (type)) |
6b80d352 | 764 | { |
21ab2aeb MD |
765 | p = 'p'; |
766 | a = 'w'; | |
6b80d352 DH |
767 | } |
768 | else | |
769 | { | |
21ab2aeb | 770 | if (!SCM_CLASSP (type)) |
cc95e00a | 771 | SCM_MISC_ERROR ("bad slot class", SCM_EOL); |
21ab2aeb MD |
772 | else if (SCM_SUBCLASSP (type, scm_class_foreign_slot)) |
773 | { | |
774 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
775 | p = 's'; | |
776 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
777 | p = 'p'; | |
778 | else | |
779 | p = 'u'; | |
780 | ||
781 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
782 | a = 'o'; | |
783 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
784 | a = 'r'; | |
b6cf4d02 AW |
785 | else if (SCM_SUBCLASSP (type, scm_class_hidden)) |
786 | a = 'h'; | |
21ab2aeb MD |
787 | else |
788 | a = 'w'; | |
789 | } | |
790 | else | |
791 | { | |
792 | p = 'p'; | |
793 | a = 'w'; | |
794 | } | |
795 | } | |
796 | ||
797 | index = SCM_GNS_INDEX (SCM_CAR (getters_n_setters)); | |
798 | if (index != (i >> 1)) | |
799 | goto inconsistent; | |
800 | size = SCM_GNS_SIZE (SCM_CAR (getters_n_setters)); | |
801 | while (size) | |
802 | { | |
803 | s[i++] = p; | |
804 | s[i++] = a; | |
805 | --size; | |
6b80d352 | 806 | } |
80662eda | 807 | } |
80662eda | 808 | slots = SCM_CDR (slots); |
21ab2aeb MD |
809 | getters_n_setters = SCM_CDR (getters_n_setters); |
810 | } | |
d2e53ed6 | 811 | if (!scm_is_null (slots)) |
21ab2aeb MD |
812 | { |
813 | inconsistent: | |
21ab2aeb | 814 | SCM_MISC_ERROR ("inconsistent getters-n-setters", SCM_EOL); |
80662eda | 815 | } |
b6cf4d02 | 816 | SCM_SET_VTABLE_LAYOUT (class, scm_string_to_symbol (layout)); |
80662eda MD |
817 | return SCM_UNSPECIFIED; |
818 | } | |
398d8ee1 | 819 | #undef FUNC_NAME |
80662eda MD |
820 | |
821 | static void prep_hashsets (SCM); | |
822 | ||
398d8ee1 KN |
823 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
824 | (SCM class, SCM dsupers), | |
825 | "") | |
826 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda | 827 | { |
398d8ee1 | 828 | SCM_VALIDATE_INSTANCE (1, class); |
51f66c91 AW |
829 | scm_i_struct_inherit_vtable_magic (SCM_CLASS_OF (class), class); |
830 | SCM_SET_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_OR_VALID); | |
80662eda MD |
831 | |
832 | prep_hashsets (class); | |
6d77c894 | 833 | |
80662eda MD |
834 | return SCM_UNSPECIFIED; |
835 | } | |
398d8ee1 | 836 | #undef FUNC_NAME |
80662eda | 837 | |
63c1872f | 838 | static void |
80662eda MD |
839 | prep_hashsets (SCM class) |
840 | { | |
dcb410ec | 841 | unsigned int i; |
80662eda | 842 | |
e161c9f8 | 843 | for (i = 0; i < 8; ++i) |
dcb410ec | 844 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
845 | } |
846 | ||
847 | /******************************************************************************/ | |
848 | ||
849 | SCM | |
850 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
851 | { | |
852 | SCM z, cpl, slots, nfields, g_n_s; | |
853 | ||
854 | /* Allocate one instance */ | |
855 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
856 | ||
857 | /* Initialize its slots */ | |
dcb410ec | 858 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
859 | cpl = compute_cpl (z); |
860 | slots = build_slots_list (maplist (dslots), cpl); | |
e11e83f3 | 861 | nfields = scm_from_int (scm_ilength (slots)); |
80662eda MD |
862 | g_n_s = compute_getters_n_setters (slots); |
863 | ||
b6cf4d02 | 864 | SCM_SET_SLOT (z, scm_vtable_index_name, name); |
dcb410ec DH |
865 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); |
866 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
867 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
868 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
869 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
870 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
871 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
872 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
873 | |
874 | /* Add this class in the direct-subclasses slot of dsupers */ | |
875 | { | |
876 | SCM tmp; | |
d2e53ed6 | 877 | for (tmp = dsupers; !scm_is_null (tmp); tmp = SCM_CDR (tmp)) |
dcb410ec DH |
878 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, |
879 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
880 | scm_si_direct_subclasses))); | |
80662eda MD |
881 | } |
882 | ||
80662eda MD |
883 | return z; |
884 | } | |
885 | ||
886 | SCM | |
887 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
888 | { | |
889 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
80662eda | 890 | scm_sys_prep_layout_x (z); |
51f66c91 | 891 | scm_sys_inherit_magic_x (z, dsupers); |
80662eda MD |
892 | return z; |
893 | } | |
894 | ||
895 | /******************************************************************************/ | |
896 | ||
6b80d352 | 897 | SCM_SYMBOL (sym_layout, "layout"); |
b6cf4d02 AW |
898 | SCM_SYMBOL (sym_flags, "flags"); |
899 | SCM_SYMBOL (sym_self, "%self"); | |
900 | SCM_SYMBOL (sym_instance_finalizer, "instance-finalizer"); | |
901 | SCM_SYMBOL (sym_reserved_0, "%reserved-0"); | |
902 | SCM_SYMBOL (sym_reserved_1, "%reserved-1"); | |
6b80d352 DH |
903 | SCM_SYMBOL (sym_print, "print"); |
904 | SCM_SYMBOL (sym_procedure, "procedure"); | |
905 | SCM_SYMBOL (sym_setter, "setter"); | |
906 | SCM_SYMBOL (sym_redefined, "redefined"); | |
907 | SCM_SYMBOL (sym_h0, "h0"); | |
908 | SCM_SYMBOL (sym_h1, "h1"); | |
909 | SCM_SYMBOL (sym_h2, "h2"); | |
910 | SCM_SYMBOL (sym_h3, "h3"); | |
911 | SCM_SYMBOL (sym_h4, "h4"); | |
912 | SCM_SYMBOL (sym_h5, "h5"); | |
913 | SCM_SYMBOL (sym_h6, "h6"); | |
914 | SCM_SYMBOL (sym_h7, "h7"); | |
915 | SCM_SYMBOL (sym_name, "name"); | |
916 | SCM_SYMBOL (sym_direct_supers, "direct-supers"); | |
917 | SCM_SYMBOL (sym_direct_slots, "direct-slots"); | |
918 | SCM_SYMBOL (sym_direct_subclasses, "direct-subclasses"); | |
919 | SCM_SYMBOL (sym_direct_methods, "direct-methods"); | |
920 | SCM_SYMBOL (sym_cpl, "cpl"); | |
921 | SCM_SYMBOL (sym_default_slot_definition_class, "default-slot-definition-class"); | |
922 | SCM_SYMBOL (sym_slots, "slots"); | |
923 | SCM_SYMBOL (sym_getters_n_setters, "getters-n-setters"); | |
6b80d352 | 924 | SCM_SYMBOL (sym_nfields, "nfields"); |
6b80d352 DH |
925 | |
926 | ||
80662eda | 927 | static SCM |
13d807b7 | 928 | build_class_class_slots (void) |
80662eda | 929 | { |
b6cf4d02 AW |
930 | /* has to be kept in sync with SCM_VTABLE_BASE_LAYOUT and |
931 | SCM_CLASS_CLASS_LAYOUT */ | |
6b80d352 DH |
932 | return scm_list_n ( |
933 | scm_list_3 (sym_layout, k_class, scm_class_protected_read_only), | |
b6cf4d02 AW |
934 | scm_list_3 (sym_flags, k_class, scm_class_hidden), |
935 | scm_list_3 (sym_self, k_class, scm_class_self), | |
936 | scm_list_3 (sym_instance_finalizer, k_class, scm_class_hidden), | |
6b80d352 | 937 | scm_list_1 (sym_print), |
b6cf4d02 AW |
938 | scm_list_3 (sym_name, k_class, scm_class_protected_hidden), |
939 | scm_list_3 (sym_reserved_0, k_class, scm_class_hidden), | |
940 | scm_list_3 (sym_reserved_1, k_class, scm_class_hidden), | |
6b80d352 DH |
941 | scm_list_1 (sym_redefined), |
942 | scm_list_3 (sym_h0, k_class, scm_class_int), | |
943 | scm_list_3 (sym_h1, k_class, scm_class_int), | |
944 | scm_list_3 (sym_h2, k_class, scm_class_int), | |
945 | scm_list_3 (sym_h3, k_class, scm_class_int), | |
946 | scm_list_3 (sym_h4, k_class, scm_class_int), | |
947 | scm_list_3 (sym_h5, k_class, scm_class_int), | |
948 | scm_list_3 (sym_h6, k_class, scm_class_int), | |
949 | scm_list_3 (sym_h7, k_class, scm_class_int), | |
6b80d352 DH |
950 | scm_list_1 (sym_direct_supers), |
951 | scm_list_1 (sym_direct_slots), | |
952 | scm_list_1 (sym_direct_subclasses), | |
953 | scm_list_1 (sym_direct_methods), | |
954 | scm_list_1 (sym_cpl), | |
955 | scm_list_1 (sym_default_slot_definition_class), | |
956 | scm_list_1 (sym_slots), | |
957 | scm_list_1 (sym_getters_n_setters), | |
6b80d352 | 958 | scm_list_1 (sym_nfields), |
6b80d352 | 959 | SCM_UNDEFINED); |
80662eda MD |
960 | } |
961 | ||
962 | static void | |
963 | create_basic_classes (void) | |
964 | { | |
965 | /* SCM slots_of_class = build_class_class_slots (); */ | |
966 | ||
b6cf4d02 AW |
967 | /**** <class> ****/ |
968 | SCM cs = scm_from_locale_string (SCM_CLASS_CLASS_LAYOUT); | |
4a655e50 | 969 | SCM name = scm_from_latin1_symbol ("<class>"); |
0818837f | 970 | scm_class_class = scm_i_make_vtable_vtable (cs); |
80662eda MD |
971 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID |
972 | | SCM_CLASSF_METACLASS)); | |
973 | ||
b6cf4d02 | 974 | SCM_SET_SLOT (scm_class_class, scm_vtable_index_name, name); |
dcb410ec DH |
975 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ |
976 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
977 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
6d77c894 | 978 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); |
dcb410ec DH |
979 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ |
980 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
e11e83f3 | 981 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, scm_from_int (SCM_N_CLASS_SLOTS)); |
dcb410ec DH |
982 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, |
983 | compute_getters_n_setters (slots_of_class)); */ | |
984 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
985 | |
986 | prep_hashsets (scm_class_class); | |
987 | ||
28d0871b | 988 | scm_module_define (scm_module_goops, name, scm_class_class); |
80662eda | 989 | |
51f66c91 | 990 | /**** <top> ****/ |
4a655e50 | 991 | name = scm_from_latin1_symbol ("<top>"); |
f39448c5 AW |
992 | scm_class_top = scm_basic_make_class (scm_class_class, name, |
993 | SCM_EOL, SCM_EOL); | |
80662eda | 994 | |
28d0871b | 995 | scm_module_define (scm_module_goops, name, scm_class_top); |
6d77c894 | 996 | |
51f66c91 | 997 | /**** <object> ****/ |
4a655e50 | 998 | name = scm_from_latin1_symbol ("<object>"); |
f39448c5 AW |
999 | scm_class_object = scm_basic_make_class (scm_class_class, name, |
1000 | scm_list_1 (scm_class_top), SCM_EOL); | |
80662eda | 1001 | |
28d0871b | 1002 | scm_module_define (scm_module_goops, name, scm_class_object); |
80662eda MD |
1003 | |
1004 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 1005 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 1006 | |
1afff620 KN |
1007 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
1008 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
1009 | } |
1010 | ||
1011 | /******************************************************************************/ | |
1012 | ||
398d8ee1 KN |
1013 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
1014 | (SCM obj), | |
6bcefd15 | 1015 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 1016 | #define FUNC_NAME s_scm_instance_p |
80662eda | 1017 | { |
7888309b | 1018 | return scm_from_bool (SCM_INSTANCEP (obj)); |
80662eda | 1019 | } |
398d8ee1 | 1020 | #undef FUNC_NAME |
80662eda | 1021 | |
80662eda MD |
1022 | |
1023 | /****************************************************************************** | |
6d77c894 | 1024 | * |
80662eda MD |
1025 | * Meta object accessors |
1026 | * | |
1027 | ******************************************************************************/ | |
398d8ee1 KN |
1028 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
1029 | (SCM obj), | |
6bcefd15 | 1030 | "Return the class name of @var{obj}.") |
398d8ee1 | 1031 | #define FUNC_NAME s_scm_class_name |
80662eda | 1032 | { |
398d8ee1 | 1033 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1034 | return scm_slot_ref (obj, sym_name); |
80662eda | 1035 | } |
398d8ee1 | 1036 | #undef FUNC_NAME |
80662eda | 1037 | |
398d8ee1 KN |
1038 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
1039 | (SCM obj), | |
6bcefd15 | 1040 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 1041 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 1042 | { |
398d8ee1 | 1043 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1044 | return scm_slot_ref (obj, sym_direct_supers); |
80662eda | 1045 | } |
398d8ee1 | 1046 | #undef FUNC_NAME |
80662eda | 1047 | |
398d8ee1 KN |
1048 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
1049 | (SCM obj), | |
6bcefd15 | 1050 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 1051 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 1052 | { |
398d8ee1 | 1053 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1054 | return scm_slot_ref (obj, sym_direct_slots); |
80662eda | 1055 | } |
398d8ee1 | 1056 | #undef FUNC_NAME |
80662eda | 1057 | |
398d8ee1 KN |
1058 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
1059 | (SCM obj), | |
6bcefd15 | 1060 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 1061 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 1062 | { |
398d8ee1 | 1063 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1064 | return scm_slot_ref(obj, sym_direct_subclasses); |
80662eda | 1065 | } |
398d8ee1 | 1066 | #undef FUNC_NAME |
80662eda | 1067 | |
398d8ee1 KN |
1068 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
1069 | (SCM obj), | |
6bcefd15 | 1070 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 1071 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 1072 | { |
398d8ee1 | 1073 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1074 | return scm_slot_ref (obj, sym_direct_methods); |
80662eda | 1075 | } |
398d8ee1 | 1076 | #undef FUNC_NAME |
80662eda | 1077 | |
398d8ee1 KN |
1078 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
1079 | (SCM obj), | |
6bcefd15 | 1080 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 1081 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 1082 | { |
398d8ee1 | 1083 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1084 | return scm_slot_ref (obj, sym_cpl); |
80662eda | 1085 | } |
398d8ee1 | 1086 | #undef FUNC_NAME |
80662eda | 1087 | |
398d8ee1 KN |
1088 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
1089 | (SCM obj), | |
6bcefd15 | 1090 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 1091 | #define FUNC_NAME s_scm_class_slots |
80662eda | 1092 | { |
398d8ee1 | 1093 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1094 | return scm_slot_ref (obj, sym_slots); |
80662eda | 1095 | } |
398d8ee1 | 1096 | #undef FUNC_NAME |
80662eda | 1097 | |
398d8ee1 KN |
1098 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
1099 | (SCM obj), | |
6bcefd15 | 1100 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 1101 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 1102 | { |
398d8ee1 | 1103 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
1104 | return scm_procedure_property (obj, scm_sym_name); |
1105 | } | |
398d8ee1 | 1106 | #undef FUNC_NAME |
80662eda | 1107 | |
bbf8d523 MD |
1108 | SCM_SYMBOL (sym_methods, "methods"); |
1109 | SCM_SYMBOL (sym_extended_by, "extended-by"); | |
1110 | SCM_SYMBOL (sym_extends, "extends"); | |
1111 | ||
1112 | static | |
1113 | SCM fold_downward_gf_methods (SCM method_lists, SCM gf) | |
1114 | { | |
1115 | SCM gfs = scm_slot_ref (gf, sym_extended_by); | |
1116 | method_lists = scm_cons (scm_slot_ref (gf, sym_methods), method_lists); | |
d2e53ed6 | 1117 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1118 | { |
1119 | method_lists = fold_downward_gf_methods (method_lists, SCM_CAR (gfs)); | |
1120 | gfs = SCM_CDR (gfs); | |
1121 | } | |
1122 | return method_lists; | |
1123 | } | |
1124 | ||
1125 | static | |
1126 | SCM fold_upward_gf_methods (SCM method_lists, SCM gf) | |
1127 | { | |
1128 | if (SCM_IS_A_P (gf, scm_class_extended_generic)) | |
1129 | { | |
1130 | SCM gfs = scm_slot_ref (gf, sym_extends); | |
d2e53ed6 | 1131 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1132 | { |
1133 | SCM methods = scm_slot_ref (SCM_CAR (gfs), sym_methods); | |
1134 | method_lists = fold_upward_gf_methods (scm_cons (methods, | |
1135 | method_lists), | |
1136 | SCM_CAR (gfs)); | |
1137 | gfs = SCM_CDR (gfs); | |
1138 | } | |
1139 | } | |
1140 | return method_lists; | |
1141 | } | |
1142 | ||
398d8ee1 KN |
1143 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
1144 | (SCM obj), | |
6bcefd15 | 1145 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 1146 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 1147 | { |
bbf8d523 | 1148 | SCM methods; |
398d8ee1 | 1149 | SCM_VALIDATE_GENERIC (1, obj); |
bbf8d523 MD |
1150 | methods = fold_upward_gf_methods (SCM_EOL, obj); |
1151 | methods = fold_downward_gf_methods (methods, obj); | |
1152 | return scm_append (methods); | |
80662eda | 1153 | } |
398d8ee1 | 1154 | #undef FUNC_NAME |
80662eda | 1155 | |
398d8ee1 KN |
1156 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
1157 | (SCM obj), | |
bb2c02f2 | 1158 | "Return the generic function for the method @var{obj}.") |
398d8ee1 | 1159 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 1160 | { |
398d8ee1 | 1161 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1162 | return scm_slot_ref (obj, scm_from_latin1_symbol ("generic-function")); |
80662eda | 1163 | } |
398d8ee1 | 1164 | #undef FUNC_NAME |
80662eda | 1165 | |
398d8ee1 KN |
1166 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
1167 | (SCM obj), | |
6bcefd15 | 1168 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 1169 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 1170 | { |
398d8ee1 | 1171 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1172 | return scm_slot_ref (obj, scm_from_latin1_symbol ("specializers")); |
80662eda | 1173 | } |
398d8ee1 | 1174 | #undef FUNC_NAME |
80662eda | 1175 | |
398d8ee1 KN |
1176 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
1177 | (SCM obj), | |
6bcefd15 | 1178 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 1179 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 1180 | { |
398d8ee1 | 1181 | SCM_VALIDATE_METHOD (1, obj); |
6b80d352 | 1182 | return scm_slot_ref (obj, sym_procedure); |
80662eda | 1183 | } |
398d8ee1 | 1184 | #undef FUNC_NAME |
80662eda | 1185 | |
80662eda MD |
1186 | /****************************************************************************** |
1187 | * | |
1188 | * S l o t a c c e s s | |
1189 | * | |
1190 | ******************************************************************************/ | |
1191 | ||
398d8ee1 KN |
1192 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
1193 | (), | |
6bcefd15 | 1194 | "Return the unbound value.") |
398d8ee1 | 1195 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
1196 | { |
1197 | return SCM_GOOPS_UNBOUND; | |
1198 | } | |
398d8ee1 | 1199 | #undef FUNC_NAME |
80662eda | 1200 | |
398d8ee1 KN |
1201 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
1202 | (SCM obj), | |
6bcefd15 | 1203 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 1204 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
1205 | { |
1206 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
1207 | } | |
398d8ee1 | 1208 | #undef FUNC_NAME |
80662eda | 1209 | |
398d8ee1 KN |
1210 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
1211 | (SCM value, SCM obj), | |
6bcefd15 MG |
1212 | "Return @var{value} if it is bound, and invoke the\n" |
1213 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 1214 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
1215 | { |
1216 | if (SCM_GOOPS_UNBOUNDP (value)) | |
bef95911 | 1217 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1218 | return value; |
1219 | } | |
398d8ee1 | 1220 | #undef FUNC_NAME |
80662eda | 1221 | |
398d8ee1 KN |
1222 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
1223 | (SCM obj, SCM index), | |
6bcefd15 MG |
1224 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
1225 | "the value from @var{obj}.") | |
398d8ee1 | 1226 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda | 1227 | { |
e11e83f3 | 1228 | SCM value = SCM_SLOT (obj, scm_to_int (index)); |
80662eda | 1229 | if (SCM_GOOPS_UNBOUNDP (value)) |
bef95911 | 1230 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1231 | return value; |
1232 | } | |
398d8ee1 | 1233 | #undef FUNC_NAME |
80662eda | 1234 | |
398d8ee1 KN |
1235 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
1236 | (SCM obj, SCM index), | |
6bcefd15 | 1237 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 1238 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1239 | { |
e25f3727 | 1240 | scm_t_bits i; |
80662eda | 1241 | |
398d8ee1 | 1242 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1243 | i = scm_to_unsigned_integer (index, 0, |
1244 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1245 | scm_si_nfields)) | |
1246 | - 1); | |
58241edc | 1247 | return SCM_SLOT (obj, i); |
80662eda | 1248 | } |
ca83b028 DH |
1249 | #undef FUNC_NAME |
1250 | ||
398d8ee1 KN |
1251 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1252 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1253 | "Set the slot with index @var{index} in @var{obj} to\n" |
1254 | "@var{value}.") | |
398d8ee1 | 1255 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1256 | { |
e25f3727 | 1257 | scm_t_bits i; |
80662eda | 1258 | |
398d8ee1 | 1259 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1260 | i = scm_to_unsigned_integer (index, 0, |
1261 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1262 | scm_si_nfields)) | |
1263 | - 1); | |
6b80d352 | 1264 | |
dcb410ec | 1265 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1266 | |
80662eda MD |
1267 | return SCM_UNSPECIFIED; |
1268 | } | |
ca83b028 DH |
1269 | #undef FUNC_NAME |
1270 | ||
80662eda | 1271 | |
4d0949ea | 1272 | \f |
80662eda MD |
1273 | /** Utilities **/ |
1274 | ||
1275 | /* In the future, this function will return the effective slot | |
1276 | * definition associated with SLOT_NAME. Now it just returns some of | |
1277 | * the information which will be stored in the effective slot | |
1278 | * definition. | |
1279 | */ | |
1280 | ||
1281 | static SCM | |
1282 | slot_definition_using_name (SCM class, SCM slot_name) | |
1283 | { | |
1284 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
d2e53ed6 | 1285 | for (; !scm_is_null (slots); slots = SCM_CDR (slots)) |
d223c3fc | 1286 | if (scm_is_eq (SCM_CAAR (slots), slot_name)) |
80662eda MD |
1287 | return SCM_CAR (slots); |
1288 | return SCM_BOOL_F; | |
1289 | } | |
1290 | ||
1291 | static SCM | |
e81d98ec | 1292 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
54ee7cdf | 1293 | #define FUNC_NAME "%get-slot-value" |
80662eda MD |
1294 | { |
1295 | SCM access = SCM_CDDR (slotdef); | |
1296 | /* Two cases here: | |
1297 | * - access is an integer (the offset of this slot in the slots vector) | |
1298 | * - otherwise (car access) is the getter function to apply | |
e11e83f3 MV |
1299 | * |
1300 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1301 | * we can just assume fixnums here. | |
23437298 | 1302 | */ |
e11e83f3 | 1303 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1304 | /* Don't poke at the slots directly, because scm_struct_ref handles the |
1305 | access bits for us. */ | |
1306 | return scm_struct_ref (obj, access); | |
80662eda | 1307 | else |
9d019f9b | 1308 | return scm_call_1 (SCM_CAR (access), obj); |
80662eda | 1309 | } |
54ee7cdf | 1310 | #undef FUNC_NAME |
80662eda MD |
1311 | |
1312 | static SCM | |
1313 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1314 | { | |
1315 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1316 | if (scm_is_true (slotdef)) |
80662eda MD |
1317 | return get_slot_value (class, obj, slotdef); |
1318 | else | |
bef95911 | 1319 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name); |
80662eda MD |
1320 | } |
1321 | ||
1322 | static SCM | |
e81d98ec | 1323 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
54ee7cdf | 1324 | #define FUNC_NAME "%set-slot-value" |
80662eda MD |
1325 | { |
1326 | SCM access = SCM_CDDR (slotdef); | |
1327 | /* Two cases here: | |
1328 | * - access is an integer (the offset of this slot in the slots vector) | |
1329 | * - otherwise (cadr access) is the setter function to apply | |
e11e83f3 MV |
1330 | * |
1331 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1332 | * we can just assume fixnums here. | |
80662eda | 1333 | */ |
e11e83f3 | 1334 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1335 | /* obey permissions bits via going through struct-set! */ |
1336 | scm_struct_set_x (obj, access, value); | |
80662eda | 1337 | else |
9d019f9b AW |
1338 | /* ((cadr l) obj value) */ |
1339 | scm_call_2 (SCM_CADR (access), obj, value); | |
80662eda MD |
1340 | return SCM_UNSPECIFIED; |
1341 | } | |
54ee7cdf | 1342 | #undef FUNC_NAME |
80662eda MD |
1343 | |
1344 | static SCM | |
1345 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1346 | { | |
1347 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1348 | if (scm_is_true (slotdef)) |
80662eda MD |
1349 | return set_slot_value (class, obj, slotdef, value); |
1350 | else | |
bef95911 | 1351 | return scm_call_4 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name, value); |
80662eda MD |
1352 | } |
1353 | ||
1354 | static SCM | |
e81d98ec | 1355 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1356 | { |
1357 | register SCM l; | |
1358 | ||
d2e53ed6 | 1359 | for (l = SCM_ACCESSORS_OF (obj); !scm_is_null (l); l = SCM_CDR (l)) |
bc36d050 | 1360 | if (scm_is_eq (SCM_CAAR (l), slot_name)) |
80662eda MD |
1361 | return SCM_BOOL_T; |
1362 | ||
1363 | return SCM_BOOL_F; | |
1364 | } | |
1365 | ||
80662eda MD |
1366 | /* ======================================== */ |
1367 | ||
23437298 DH |
1368 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1369 | (SCM class, SCM obj, SCM slot_name), | |
1370 | "") | |
1371 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1372 | { |
1373 | SCM res; | |
1374 | ||
398d8ee1 KN |
1375 | SCM_VALIDATE_CLASS (1, class); |
1376 | SCM_VALIDATE_INSTANCE (2, obj); | |
1377 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1378 | |
1379 | res = get_slot_value_using_name (class, obj, slot_name); | |
1380 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1381 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1382 | return res; |
1383 | } | |
23437298 | 1384 | #undef FUNC_NAME |
80662eda | 1385 | |
23437298 DH |
1386 | |
1387 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1388 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1389 | "") | |
1390 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1391 | { |
398d8ee1 KN |
1392 | SCM_VALIDATE_CLASS (1, class); |
1393 | SCM_VALIDATE_INSTANCE (2, obj); | |
1394 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1395 | |
80662eda MD |
1396 | return set_slot_value_using_name (class, obj, slot_name, value); |
1397 | } | |
23437298 DH |
1398 | #undef FUNC_NAME |
1399 | ||
80662eda | 1400 | |
398d8ee1 KN |
1401 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1402 | (SCM class, SCM obj, SCM slot_name), | |
1403 | "") | |
1404 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1405 | { |
398d8ee1 KN |
1406 | SCM_VALIDATE_CLASS (1, class); |
1407 | SCM_VALIDATE_INSTANCE (2, obj); | |
1408 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1409 | |
1410 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1411 | ? SCM_BOOL_F | |
1412 | : SCM_BOOL_T); | |
1413 | } | |
398d8ee1 | 1414 | #undef FUNC_NAME |
80662eda | 1415 | |
398d8ee1 KN |
1416 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1417 | (SCM class, SCM obj, SCM slot_name), | |
1418 | "") | |
1419 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1420 | { | |
1421 | SCM_VALIDATE_CLASS (1, class); | |
1422 | SCM_VALIDATE_INSTANCE (2, obj); | |
1423 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1424 | return test_slot_existence (class, obj, slot_name); |
1425 | } | |
398d8ee1 | 1426 | #undef FUNC_NAME |
80662eda MD |
1427 | |
1428 | ||
1429 | /* ======================================== */ | |
1430 | ||
398d8ee1 KN |
1431 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1432 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1433 | "Return the value from @var{obj}'s slot with the name\n" |
1434 | "@var{slot_name}.") | |
398d8ee1 | 1435 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1436 | { |
1437 | SCM res, class; | |
1438 | ||
398d8ee1 | 1439 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1440 | TEST_CHANGE_CLASS (obj, class); |
1441 | ||
1442 | res = get_slot_value_using_name (class, obj, slot_name); | |
1443 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1444 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1445 | return res; |
1446 | } | |
398d8ee1 | 1447 | #undef FUNC_NAME |
80662eda | 1448 | |
398d8ee1 KN |
1449 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1450 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1451 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1452 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1453 | { |
1454 | SCM class; | |
1455 | ||
398d8ee1 | 1456 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1457 | TEST_CHANGE_CLASS(obj, class); |
1458 | ||
1459 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1460 | } | |
398d8ee1 | 1461 | #undef FUNC_NAME |
80662eda | 1462 | |
398d8ee1 | 1463 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1464 | |
398d8ee1 KN |
1465 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1466 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1467 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1468 | "is bound.") | |
398d8ee1 | 1469 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1470 | { |
1471 | SCM class; | |
1472 | ||
398d8ee1 | 1473 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1474 | TEST_CHANGE_CLASS(obj, class); |
1475 | ||
1476 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1477 | obj, | |
1478 | slot_name)) | |
1479 | ? SCM_BOOL_F | |
1480 | : SCM_BOOL_T); | |
1481 | } | |
398d8ee1 | 1482 | #undef FUNC_NAME |
80662eda | 1483 | |
6d77c894 | 1484 | SCM_DEFINE (scm_slot_exists_p, "slot-exists?", 2, 0, 0, |
398d8ee1 | 1485 | (SCM obj, SCM slot_name), |
6bcefd15 | 1486 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
6d77c894 | 1487 | #define FUNC_NAME s_scm_slot_exists_p |
80662eda MD |
1488 | { |
1489 | SCM class; | |
1490 | ||
398d8ee1 KN |
1491 | SCM_VALIDATE_INSTANCE (1, obj); |
1492 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1493 | TEST_CHANGE_CLASS (obj, class); |
1494 | ||
1495 | return test_slot_existence (class, obj, slot_name); | |
1496 | } | |
398d8ee1 | 1497 | #undef FUNC_NAME |
80662eda MD |
1498 | |
1499 | ||
1500 | /****************************************************************************** | |
1501 | * | |
1502 | * %allocate-instance (the low level instance allocation primitive) | |
1503 | * | |
1504 | ******************************************************************************/ | |
1505 | ||
1506 | static void clear_method_cache (SCM); | |
1507 | ||
398d8ee1 KN |
1508 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1509 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1510 | "Create a new instance of class @var{class} and initialize it\n" |
1511 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1512 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda | 1513 | { |
b6cf4d02 | 1514 | SCM obj; |
e25f3727 | 1515 | scm_t_signed_bits n, i; |
b6cf4d02 | 1516 | SCM layout; |
80662eda | 1517 | |
398d8ee1 | 1518 | SCM_VALIDATE_CLASS (1, class); |
80662eda | 1519 | |
b6cf4d02 | 1520 | /* FIXME: duplicates some of scm_make_struct. */ |
80662eda | 1521 | |
e11e83f3 | 1522 | n = SCM_I_INUM (SCM_SLOT (class, scm_si_nfields)); |
96a44c1c | 1523 | obj = scm_i_alloc_struct (SCM_STRUCT_DATA (class), n); |
6d77c894 | 1524 | |
b6cf4d02 AW |
1525 | layout = SCM_VTABLE_LAYOUT (class); |
1526 | ||
1527 | /* Set all SCM-holding slots to unbound */ | |
1528 | for (i = 0; i < n; i++) | |
71fc6438 AW |
1529 | { |
1530 | scm_t_wchar c = scm_i_symbol_ref (layout, i*2); | |
b6cf4d02 AW |
1531 | if (c == 'p') |
1532 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (SCM_GOOPS_UNBOUND); | |
1533 | else if (c == 's') | |
1534 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (obj); | |
1535 | else | |
1536 | SCM_STRUCT_DATA (obj)[i] = 0; | |
80662eda | 1537 | } |
6d77c894 | 1538 | |
b6cf4d02 AW |
1539 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) |
1540 | clear_method_cache (obj); | |
80662eda | 1541 | |
b6cf4d02 | 1542 | return obj; |
80662eda | 1543 | } |
398d8ee1 | 1544 | #undef FUNC_NAME |
80662eda | 1545 | |
398d8ee1 KN |
1546 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1547 | (SCM obj, SCM setter), | |
1548 | "") | |
1549 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1550 | { |
11561496 AW |
1551 | SCM_ASSERT (SCM_STRUCTP (obj) |
1552 | && (SCM_OBJ_CLASS_FLAGS (obj) & SCM_CLASSF_PURE_GENERIC), | |
80662eda MD |
1553 | obj, |
1554 | SCM_ARG1, | |
398d8ee1 | 1555 | FUNC_NAME); |
11561496 | 1556 | SCM_SET_GENERIC_SETTER (obj, setter); |
80662eda MD |
1557 | return SCM_UNSPECIFIED; |
1558 | } | |
398d8ee1 | 1559 | #undef FUNC_NAME |
80662eda MD |
1560 | |
1561 | /****************************************************************************** | |
1562 | * | |
1563 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 1564 | * |
80662eda MD |
1565 | ******************************************************************************/ |
1566 | ||
398d8ee1 KN |
1567 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1568 | (SCM old, SCM new), | |
1569 | "") | |
1570 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1571 | { |
398d8ee1 KN |
1572 | SCM_VALIDATE_INSTANCE (1, old); |
1573 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 1574 | |
6d77c894 | 1575 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
1576 | * scratch the old value with new to be correct with GC. |
1577 | * See "Class redefinition protocol above". | |
1578 | */ | |
9de87eea | 1579 | SCM_CRITICAL_SECTION_START; |
80662eda | 1580 | { |
32b12f40 KR |
1581 | scm_t_bits word0, word1; |
1582 | word0 = SCM_CELL_WORD_0 (old); | |
1583 | word1 = SCM_CELL_WORD_1 (old); | |
1584 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1585 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
1586 | SCM_SET_CELL_WORD_0 (new, word0); | |
1587 | SCM_SET_CELL_WORD_1 (new, word1); | |
80662eda | 1588 | } |
9de87eea | 1589 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1590 | return SCM_UNSPECIFIED; |
1591 | } | |
398d8ee1 | 1592 | #undef FUNC_NAME |
80662eda | 1593 | |
398d8ee1 KN |
1594 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1595 | (SCM old, SCM new), | |
1596 | "") | |
1597 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1598 | { |
398d8ee1 KN |
1599 | SCM_VALIDATE_CLASS (1, old); |
1600 | SCM_VALIDATE_CLASS (2, new); | |
80662eda | 1601 | |
9de87eea | 1602 | SCM_CRITICAL_SECTION_START; |
80662eda | 1603 | { |
32b12f40 KR |
1604 | scm_t_bits word0, word1; |
1605 | word0 = SCM_CELL_WORD_0 (old); | |
1606 | word1 = SCM_CELL_WORD_1 (old); | |
1607 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1608 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
b6cf4d02 | 1609 | SCM_STRUCT_DATA (old)[scm_vtable_index_self] = SCM_UNPACK (old); |
32b12f40 KR |
1610 | SCM_SET_CELL_WORD_0 (new, word0); |
1611 | SCM_SET_CELL_WORD_1 (new, word1); | |
b6cf4d02 | 1612 | SCM_STRUCT_DATA (new)[scm_vtable_index_self] = SCM_UNPACK (new); |
80662eda | 1613 | } |
9de87eea | 1614 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1615 | return SCM_UNSPECIFIED; |
1616 | } | |
398d8ee1 | 1617 | #undef FUNC_NAME |
80662eda | 1618 | |
398d8ee1 KN |
1619 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1620 | (SCM class), | |
1621 | "") | |
1622 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1623 | { |
398d8ee1 | 1624 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1625 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1626 | return SCM_UNSPECIFIED; | |
1627 | } | |
398d8ee1 | 1628 | #undef FUNC_NAME |
80662eda MD |
1629 | |
1630 | /* When instances change class, they finally get a new body, but | |
1631 | * before that, they go through purgatory in hell. Odd as it may | |
1632 | * seem, this data structure saves us from eternal suffering in | |
1633 | * infinite recursions. | |
1634 | */ | |
1635 | ||
92c2555f | 1636 | static scm_t_bits **hell; |
c014a02e ML |
1637 | static long n_hell = 1; /* one place for the evil one himself */ |
1638 | static long hell_size = 4; | |
2132f0d2 | 1639 | static SCM hell_mutex; |
80662eda | 1640 | |
c014a02e | 1641 | static long |
80662eda MD |
1642 | burnin (SCM o) |
1643 | { | |
c014a02e | 1644 | long i; |
80662eda | 1645 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 1646 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
1647 | return i; |
1648 | return 0; | |
1649 | } | |
1650 | ||
1651 | static void | |
1652 | go_to_hell (void *o) | |
1653 | { | |
b5df9cda | 1654 | SCM obj = *(SCM*)o; |
2132f0d2 | 1655 | scm_lock_mutex (hell_mutex); |
51ef99f7 | 1656 | if (n_hell >= hell_size) |
80662eda | 1657 | { |
51ef99f7 | 1658 | hell_size *= 2; |
408bcd99 | 1659 | hell = scm_realloc (hell, hell_size * sizeof(*hell)); |
80662eda | 1660 | } |
6b80d352 | 1661 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 1662 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1663 | } |
1664 | ||
1665 | static void | |
1666 | go_to_heaven (void *o) | |
1667 | { | |
b5df9cda | 1668 | SCM obj = *(SCM*)o; |
2132f0d2 | 1669 | scm_lock_mutex (hell_mutex); |
b5df9cda | 1670 | hell[burnin (obj)] = hell[--n_hell]; |
2132f0d2 | 1671 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1672 | } |
1673 | ||
6b80d352 DH |
1674 | |
1675 | SCM_SYMBOL (scm_sym_change_class, "change-class"); | |
1676 | ||
80662eda | 1677 | static SCM |
b5df9cda | 1678 | purgatory (SCM obj, SCM new_class) |
80662eda | 1679 | { |
b5df9cda | 1680 | return scm_call_2 (SCM_VARIABLE_REF (var_change_class), obj, new_class); |
80662eda MD |
1681 | } |
1682 | ||
38d8927c MD |
1683 | /* This function calls the generic function change-class for all |
1684 | * instances which aren't currently undergoing class change. | |
1685 | */ | |
1686 | ||
80662eda | 1687 | void |
e81d98ec | 1688 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1689 | { |
1690 | if (!burnin (obj)) | |
b5df9cda AW |
1691 | { |
1692 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
1693 | scm_dynwind_rewind_handler (go_to_hell, &obj, SCM_F_WIND_EXPLICITLY); | |
1694 | scm_dynwind_unwind_handler (go_to_heaven, &obj, SCM_F_WIND_EXPLICITLY); | |
1695 | purgatory (obj, new_class); | |
1696 | scm_dynwind_end (); | |
1697 | } | |
80662eda MD |
1698 | } |
1699 | ||
1700 | /****************************************************************************** | |
1701 | * | |
6d77c894 TTN |
1702 | * GGGG FFFFF |
1703 | * G F | |
1704 | * G GG FFF | |
1705 | * G G F | |
80662eda MD |
1706 | * GGG E N E R I C F U N C T I O N S |
1707 | * | |
1708 | * This implementation provides | |
1709 | * - generic functions (with class specializers) | |
1710 | * - multi-methods | |
6d77c894 | 1711 | * - next-method |
80662eda MD |
1712 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
1713 | * | |
1714 | ******************************************************************************/ | |
1715 | ||
1716 | SCM_KEYWORD (k_name, "name"); | |
1717 | ||
63c1872f | 1718 | SCM_GLOBAL_SYMBOL (scm_sym_args, "args"); |
80662eda | 1719 | |
a4aa2134 | 1720 | |
e29db33c AW |
1721 | SCM_SYMBOL (sym_delayed_compile, "delayed-compile"); |
1722 | static SCM | |
1723 | make_dispatch_procedure (SCM gf) | |
1724 | { | |
1725 | static SCM var = SCM_BOOL_F; | |
393baa8a | 1726 | if (scm_is_false (var)) |
e29db33c AW |
1727 | var = scm_module_variable (scm_c_resolve_module ("oop goops dispatch"), |
1728 | sym_delayed_compile); | |
1729 | return scm_call_1 (SCM_VARIABLE_REF (var), gf); | |
1730 | } | |
1731 | ||
80662eda MD |
1732 | static void |
1733 | clear_method_cache (SCM gf) | |
1734 | { | |
e29db33c | 1735 | SCM_SET_GENERIC_DISPATCH_PROCEDURE (gf, make_dispatch_procedure (gf)); |
a9a90a88 | 1736 | SCM_CLEAR_GENERIC_EFFECTIVE_METHODS (gf); |
80662eda MD |
1737 | } |
1738 | ||
398d8ee1 KN |
1739 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1740 | (SCM gf), | |
1741 | "") | |
1742 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda | 1743 | { |
25ba37df | 1744 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
6d33e90f | 1745 | clear_method_cache (gf); |
80662eda MD |
1746 | return SCM_UNSPECIFIED; |
1747 | } | |
398d8ee1 | 1748 | #undef FUNC_NAME |
80662eda | 1749 | |
398d8ee1 KN |
1750 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1751 | (SCM proc), | |
1752 | "") | |
1753 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 1754 | { |
7888309b | 1755 | SCM_ASSERT (scm_is_true (scm_procedure_p (proc)), |
398d8ee1 | 1756 | proc, SCM_ARG1, FUNC_NAME); |
9fdf9fd3 | 1757 | return (SCM_PRIMITIVE_GENERIC_P (proc) ? SCM_BOOL_T : SCM_BOOL_F); |
80662eda | 1758 | } |
398d8ee1 | 1759 | #undef FUNC_NAME |
80662eda | 1760 | |
398d8ee1 KN |
1761 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1762 | (SCM subrs), | |
1763 | "") | |
1764 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 1765 | { |
6b80d352 | 1766 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
d2e53ed6 | 1767 | while (!scm_is_null (subrs)) |
80662eda MD |
1768 | { |
1769 | SCM subr = SCM_CAR (subrs); | |
9fdf9fd3 | 1770 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARGn, FUNC_NAME); |
52fd9639 AW |
1771 | SCM_SET_SUBR_GENERIC (subr, |
1772 | scm_make (scm_list_3 (scm_class_generic, | |
1773 | k_name, | |
1774 | SCM_SUBR_NAME (subr)))); | |
80662eda MD |
1775 | subrs = SCM_CDR (subrs); |
1776 | } | |
1777 | return SCM_UNSPECIFIED; | |
1778 | } | |
398d8ee1 | 1779 | #undef FUNC_NAME |
80662eda | 1780 | |
9f63ce02 AW |
1781 | SCM_DEFINE (scm_set_primitive_generic_x, "set-primitive-generic!", 2, 0, 0, |
1782 | (SCM subr, SCM generic), | |
1783 | "") | |
1784 | #define FUNC_NAME s_scm_set_primitive_generic_x | |
1785 | { | |
9fdf9fd3 | 1786 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARG1, FUNC_NAME); |
9f63ce02 | 1787 | SCM_ASSERT (SCM_PUREGENERICP (generic), generic, SCM_ARG2, FUNC_NAME); |
52fd9639 | 1788 | SCM_SET_SUBR_GENERIC (subr, generic); |
9f63ce02 AW |
1789 | return SCM_UNSPECIFIED; |
1790 | } | |
1791 | #undef FUNC_NAME | |
1792 | ||
398d8ee1 KN |
1793 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1794 | (SCM subr), | |
1795 | "") | |
1796 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda | 1797 | { |
9fdf9fd3 | 1798 | if (SCM_PRIMITIVE_GENERIC_P (subr)) |
80662eda | 1799 | { |
b2b33168 | 1800 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (subr))) |
a48d60b1 MD |
1801 | scm_enable_primitive_generic_x (scm_list_1 (subr)); |
1802 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 1803 | } |
db4b4ca6 | 1804 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1805 | } |
398d8ee1 | 1806 | #undef FUNC_NAME |
80662eda | 1807 | |
a48d60b1 MD |
1808 | typedef struct t_extension { |
1809 | struct t_extension *next; | |
1810 | SCM extended; | |
1811 | SCM extension; | |
1812 | } t_extension; | |
1813 | ||
d0cad249 LC |
1814 | |
1815 | /* Hint for `scm_gc_malloc ()' et al. when allocating `t_extension' | |
1816 | objects. */ | |
1817 | static const char extension_gc_hint[] = "GOOPS extension"; | |
1818 | ||
a48d60b1 MD |
1819 | static t_extension *extensions = 0; |
1820 | ||
a48d60b1 MD |
1821 | void |
1822 | scm_c_extend_primitive_generic (SCM extended, SCM extension) | |
1823 | { | |
1824 | if (goops_loaded_p) | |
1825 | { | |
1826 | SCM gf, gext; | |
b2b33168 | 1827 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (extended))) |
a48d60b1 MD |
1828 | scm_enable_primitive_generic_x (scm_list_1 (extended)); |
1829 | gf = *SCM_SUBR_GENERIC (extended); | |
1830 | gext = scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic), | |
1831 | gf, | |
ce471ab8 | 1832 | SCM_SUBR_NAME (extension)); |
feccd2d3 | 1833 | SCM_SET_SUBR_GENERIC (extension, gext); |
a48d60b1 MD |
1834 | } |
1835 | else | |
1836 | { | |
d0cad249 LC |
1837 | t_extension *e = scm_gc_malloc (sizeof (t_extension), |
1838 | extension_gc_hint); | |
a48d60b1 MD |
1839 | t_extension **loc = &extensions; |
1840 | /* Make sure that extensions are placed before their own | |
1841 | * extensions in the extensions list. O(N^2) algorithm, but | |
1842 | * extensions of primitive generics are rare. | |
1843 | */ | |
d223c3fc | 1844 | while (*loc && !scm_is_eq (extension, (*loc)->extended)) |
a48d60b1 MD |
1845 | loc = &(*loc)->next; |
1846 | e->next = *loc; | |
1847 | e->extended = extended; | |
1848 | e->extension = extension; | |
1849 | *loc = e; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | static void | |
1854 | setup_extended_primitive_generics () | |
1855 | { | |
1856 | while (extensions) | |
1857 | { | |
1858 | t_extension *e = extensions; | |
1859 | scm_c_extend_primitive_generic (e->extended, e->extension); | |
1860 | extensions = e->next; | |
a48d60b1 MD |
1861 | } |
1862 | } | |
1863 | ||
fa075d40 AW |
1864 | /* Dirk:FIXME:: In all of these scm_wta_dispatch_* routines it is |
1865 | * assumed that 'gf' is zero if uninitialized. It would be cleaner if | |
1866 | * some valid SCM value like SCM_BOOL_F or SCM_UNDEFINED were chosen. | |
1867 | */ | |
1868 | ||
1869 | SCM | |
1870 | scm_wta_dispatch_0 (SCM gf, const char *subr) | |
1871 | { | |
1872 | if (!SCM_UNPACK (gf)) | |
1873 | scm_error_num_args_subr (subr); | |
1874 | ||
1875 | return scm_call_0 (gf); | |
1876 | } | |
1877 | ||
1878 | SCM | |
1879 | scm_wta_dispatch_1 (SCM gf, SCM a1, int pos, const char *subr) | |
1880 | { | |
1881 | if (!SCM_UNPACK (gf)) | |
1882 | scm_wrong_type_arg (subr, pos, a1); | |
1883 | ||
1884 | return scm_call_1 (gf, a1); | |
1885 | } | |
1886 | ||
1887 | SCM | |
1888 | scm_wta_dispatch_2 (SCM gf, SCM a1, SCM a2, int pos, const char *subr) | |
1889 | { | |
1890 | if (!SCM_UNPACK (gf)) | |
1891 | scm_wrong_type_arg (subr, pos, (pos == SCM_ARG1) ? a1 : a2); | |
1892 | ||
1893 | return scm_call_2 (gf, a1, a2); | |
1894 | } | |
1895 | ||
1896 | SCM | |
1897 | scm_wta_dispatch_n (SCM gf, SCM args, int pos, const char *subr) | |
1898 | { | |
1899 | if (!SCM_UNPACK (gf)) | |
1900 | scm_wrong_type_arg (subr, pos, scm_list_ref (args, scm_from_int (pos))); | |
1901 | ||
1902 | return scm_apply_0 (gf, args); | |
1903 | } | |
1904 | ||
80662eda | 1905 | /****************************************************************************** |
6d77c894 | 1906 | * |
80662eda | 1907 | * Protocol for calling a generic fumction |
6d77c894 | 1908 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
1909 | * for efficiency reasons): |
1910 | * | |
1911 | * + apply-generic (gf args) | |
1912 | * + compute-applicable-methods (gf args ...) | |
1913 | * + sort-applicable-methods (methods args) | |
1914 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
1915 | * |
1916 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
1917 | * method. Applying a next-method will call apply-next-method which in |
1918 | * turn will call apply again to call effectively the following method. | |
1919 | * | |
1920 | ******************************************************************************/ | |
1921 | ||
1922 | static int | |
1923 | applicablep (SCM actual, SCM formal) | |
1924 | { | |
79a3dafe | 1925 | /* We already know that the cpl is well formed. */ |
7888309b | 1926 | return scm_is_true (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); |
80662eda MD |
1927 | } |
1928 | ||
1929 | static int | |
34d19ef6 | 1930 | more_specificp (SCM m1, SCM m2, SCM const *targs) |
80662eda MD |
1931 | { |
1932 | register SCM s1, s2; | |
c014a02e | 1933 | register long i; |
6d77c894 TTN |
1934 | /* |
1935 | * Note: | |
1936 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
80662eda MD |
1937 | * other when we have a dotted parameter list). For instance, with the call |
1938 | * (M 1) | |
1939 | * with | |
1940 | * (define-method M (a . l) ....) | |
6d77c894 | 1941 | * (define-method M (a) ....) |
80662eda MD |
1942 | * |
1943 | * we consider that the second method is more specific. | |
1944 | * | |
1945 | * BTW, targs is an array of types. We don't need it's size since | |
1946 | * we already know that m1 and m2 are applicable (no risk to go past | |
1947 | * the end of this array). | |
1948 | * | |
1949 | */ | |
34d19ef6 | 1950 | for (i=0, s1=SPEC_OF(m1), s2=SPEC_OF(m2); ; i++, s1=SCM_CDR(s1), s2=SCM_CDR(s2)) { |
d2e53ed6 MV |
1951 | if (scm_is_null(s1)) return 1; |
1952 | if (scm_is_null(s2)) return 0; | |
d223c3fc | 1953 | if (!scm_is_eq (SCM_CAR(s1), SCM_CAR(s2))) { |
80662eda | 1954 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); |
6d77c894 | 1955 | |
dcb410ec | 1956 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
d223c3fc | 1957 | if (scm_is_eq (cs1, SCM_CAR (l))) |
80662eda | 1958 | return 1; |
d223c3fc | 1959 | if (scm_is_eq (cs2, SCM_CAR (l))) |
80662eda MD |
1960 | return 0; |
1961 | } | |
1962 | return 0;/* should not occur! */ | |
1963 | } | |
1964 | } | |
1965 | return 0; /* should not occur! */ | |
1966 | } | |
1967 | ||
1968 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1969 | ||
1970 | static SCM | |
c014a02e | 1971 | scm_i_vector2list (SCM l, long len) |
80662eda | 1972 | { |
c014a02e | 1973 | long j; |
00ffa0e7 | 1974 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
6d77c894 | 1975 | |
80662eda | 1976 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { |
4057a3e0 | 1977 | SCM_SIMPLE_VECTOR_SET (z, j, SCM_CAR (l)); |
80662eda MD |
1978 | } |
1979 | return z; | |
1980 | } | |
1981 | ||
1982 | static SCM | |
34d19ef6 | 1983 | sort_applicable_methods (SCM method_list, long size, SCM const *targs) |
80662eda | 1984 | { |
c014a02e | 1985 | long i, j, incr; |
80662eda MD |
1986 | SCM *v, vector = SCM_EOL; |
1987 | SCM buffer[BUFFSIZE]; | |
1988 | SCM save = method_list; | |
4057a3e0 | 1989 | scm_t_array_handle handle; |
80662eda MD |
1990 | |
1991 | /* For reasonably sized method_lists we can try to avoid all the | |
1992 | * consing and reorder the list in place... | |
1993 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
1994 | */ | |
1995 | if (size <= BUFFSIZE) | |
1996 | { | |
1997 | for (i = 0; i < size; i++) | |
1998 | { | |
1999 | buffer[i] = SCM_CAR (method_list); | |
2000 | method_list = SCM_CDR (method_list); | |
2001 | } | |
2002 | v = buffer; | |
6d77c894 | 2003 | } |
80662eda MD |
2004 | else |
2005 | { | |
2006 | /* Too many elements in method_list to keep everything locally */ | |
2007 | vector = scm_i_vector2list (save, size); | |
4057a3e0 | 2008 | v = scm_vector_writable_elements (vector, &handle, NULL, NULL); |
80662eda MD |
2009 | } |
2010 | ||
6d77c894 | 2011 | /* Use a simple shell sort since it is generally faster than qsort on |
80662eda MD |
2012 | * small vectors (which is probably mostly the case when we have to |
2013 | * sort a list of applicable methods). | |
2014 | */ | |
2015 | for (incr = size / 2; incr; incr /= 2) | |
2016 | { | |
2017 | for (i = incr; i < size; i++) | |
2018 | { | |
2019 | for (j = i - incr; j >= 0; j -= incr) | |
2020 | { | |
2021 | if (more_specificp (v[j], v[j+incr], targs)) | |
2022 | break; | |
2023 | else | |
2024 | { | |
2025 | SCM tmp = v[j + incr]; | |
2026 | v[j + incr] = v[j]; | |
2027 | v[j] = tmp; | |
2028 | } | |
2029 | } | |
2030 | } | |
2031 | } | |
2032 | ||
2033 | if (size <= BUFFSIZE) | |
2034 | { | |
2035 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
2036 | for (i = 0, method_list = save; i < size; i++, v++) | |
2037 | { | |
2038 | SCM_SETCAR (method_list, *v); | |
2039 | method_list = SCM_CDR (method_list); | |
2040 | } | |
2041 | return save; | |
2042 | } | |
4057a3e0 | 2043 | |
6d77c894 | 2044 | /* If we are here, that's that we did it the hard way... */ |
c8857a4d | 2045 | scm_array_handle_release (&handle); |
80662eda MD |
2046 | return scm_vector_to_list (vector); |
2047 | } | |
2048 | ||
2049 | SCM | |
c014a02e | 2050 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 2051 | { |
c014a02e ML |
2052 | register long i; |
2053 | long count = 0; | |
80662eda MD |
2054 | SCM l, fl, applicable = SCM_EOL; |
2055 | SCM save = args; | |
34d19ef6 HWN |
2056 | SCM buffer[BUFFSIZE]; |
2057 | SCM const *types; | |
2058 | SCM *p; | |
2059 | SCM tmp = SCM_EOL; | |
4057a3e0 | 2060 | scm_t_array_handle handle; |
6d77c894 | 2061 | |
80662eda | 2062 | /* Build the list of arguments types */ |
4057a3e0 MV |
2063 | if (len >= BUFFSIZE) |
2064 | { | |
2065 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); | |
2066 | types = p = scm_vector_writable_elements (tmp, &handle, NULL, NULL); | |
34d19ef6 HWN |
2067 | |
2068 | /* | |
2069 | note that we don't have to work to reset the generation | |
2070 | count. TMP is a new vector anyway, and it is found | |
2071 | conservatively. | |
2072 | */ | |
4057a3e0 | 2073 | } |
80662eda MD |
2074 | else |
2075 | types = p = buffer; | |
6d77c894 | 2076 | |
d2e53ed6 | 2077 | for ( ; !scm_is_null (args); args = SCM_CDR (args)) |
80662eda | 2078 | *p++ = scm_class_of (SCM_CAR (args)); |
34d19ef6 | 2079 | |
80662eda | 2080 | /* Build a list of all applicable methods */ |
d2e53ed6 | 2081 | for (l = scm_generic_function_methods (gf); !scm_is_null (l); l = SCM_CDR (l)) |
80662eda MD |
2082 | { |
2083 | fl = SPEC_OF (SCM_CAR (l)); | |
80662eda MD |
2084 | for (i = 0; ; i++, fl = SCM_CDR (fl)) |
2085 | { | |
c312aca7 | 2086 | if (SCM_INSTANCEP (fl) |
80662eda | 2087 | /* We have a dotted argument list */ |
d2e53ed6 | 2088 | || (i >= len && scm_is_null (fl))) |
80662eda MD |
2089 | { /* both list exhausted */ |
2090 | applicable = scm_cons (SCM_CAR (l), applicable); | |
2091 | count += 1; | |
2092 | break; | |
2093 | } | |
2094 | if (i >= len | |
d2e53ed6 | 2095 | || scm_is_null (fl) |
80662eda MD |
2096 | || !applicablep (types[i], SCM_CAR (fl))) |
2097 | break; | |
2098 | } | |
2099 | } | |
2100 | ||
c8857a4d MV |
2101 | if (len >= BUFFSIZE) |
2102 | scm_array_handle_release (&handle); | |
2103 | ||
80662eda MD |
2104 | if (count == 0) |
2105 | { | |
2106 | if (find_method_p) | |
2107 | return SCM_BOOL_F; | |
bef95911 | 2108 | scm_call_2 (SCM_VARIABLE_REF (var_no_applicable_method), gf, save); |
80662eda MD |
2109 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ |
2110 | return SCM_BOOL_F; | |
2111 | } | |
34d19ef6 | 2112 | |
80662eda MD |
2113 | return (count == 1 |
2114 | ? applicable | |
2115 | : sort_applicable_methods (applicable, count, types)); | |
2116 | } | |
2117 | ||
2118 | #if 0 | |
2119 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
2120 | #endif | |
2121 | ||
2122 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
2123 | ||
2124 | SCM | |
2125 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 2126 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 2127 | { |
c014a02e | 2128 | long n; |
398d8ee1 | 2129 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2130 | n = scm_ilength (args); |
398d8ee1 | 2131 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
2132 | return scm_compute_applicable_methods (gf, args, n, 1); |
2133 | } | |
398d8ee1 | 2134 | #undef FUNC_NAME |
80662eda | 2135 | |
86d31dfe | 2136 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
cc7005bc AW |
2137 | SCM_VARIABLE_INIT (var_compute_applicable_methods, "compute-applicable-methods", |
2138 | scm_c_define_gsubr (s_sys_compute_applicable_methods, 2, 0, 0, | |
2139 | scm_sys_compute_applicable_methods)); | |
80662eda | 2140 | |
80662eda MD |
2141 | /****************************************************************************** |
2142 | * | |
2143 | * A simple make (which will be redefined later in Scheme) | |
2144 | * This version handles only creation of gf, methods and classes (no instances) | |
2145 | * | |
6d77c894 | 2146 | * Since this code will disappear when Goops will be fully booted, |
80662eda MD |
2147 | * no precaution is taken to be efficient. |
2148 | * | |
2149 | ******************************************************************************/ | |
2150 | ||
2151 | SCM_KEYWORD (k_setter, "setter"); | |
2152 | SCM_KEYWORD (k_specializers, "specializers"); | |
2153 | SCM_KEYWORD (k_procedure, "procedure"); | |
5487977b AW |
2154 | SCM_KEYWORD (k_formals, "formals"); |
2155 | SCM_KEYWORD (k_body, "body"); | |
e177058b | 2156 | SCM_KEYWORD (k_make_procedure, "make-procedure"); |
80662eda MD |
2157 | SCM_KEYWORD (k_dsupers, "dsupers"); |
2158 | SCM_KEYWORD (k_slots, "slots"); | |
2159 | SCM_KEYWORD (k_gf, "generic-function"); | |
2160 | ||
398d8ee1 KN |
2161 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
2162 | (SCM args), | |
27c37006 | 2163 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 2164 | "all necessary initialization information.") |
398d8ee1 | 2165 | #define FUNC_NAME s_scm_make |
80662eda MD |
2166 | { |
2167 | SCM class, z; | |
c014a02e | 2168 | long len = scm_ilength (args); |
80662eda MD |
2169 | |
2170 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2171 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2172 | |
2173 | class = SCM_CAR(args); | |
2174 | args = SCM_CDR(args); | |
2175 | ||
d223c3fc AW |
2176 | if (scm_is_eq (class, scm_class_generic) |
2177 | || scm_is_eq (class, scm_class_accessor)) | |
80662eda | 2178 | { |
80662eda | 2179 | z = scm_make_struct (class, SCM_INUM0, |
72d2e7e6 | 2180 | scm_list_4 (SCM_BOOL_F, |
51f66c91 | 2181 | SCM_EOL, |
1afff620 | 2182 | SCM_INUM0, |
bbf8d523 | 2183 | SCM_EOL)); |
80662eda MD |
2184 | scm_set_procedure_property_x (z, scm_sym_name, |
2185 | scm_get_keyword (k_name, | |
2186 | args, | |
2187 | SCM_BOOL_F)); | |
2188 | clear_method_cache (z); | |
d223c3fc | 2189 | if (scm_is_eq (class, scm_class_accessor)) |
80662eda MD |
2190 | { |
2191 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
7888309b | 2192 | if (scm_is_true (setter)) |
80662eda MD |
2193 | scm_sys_set_object_setter_x (z, setter); |
2194 | } | |
2195 | } | |
2196 | else | |
2197 | { | |
2198 | z = scm_sys_allocate_instance (class, args); | |
2199 | ||
d223c3fc AW |
2200 | if (scm_is_eq (class, scm_class_method) |
2201 | || scm_is_eq (class, scm_class_accessor_method)) | |
80662eda | 2202 | { |
6d77c894 | 2203 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2204 | scm_i_get_keyword (k_gf, |
2205 | args, | |
2206 | len - 1, | |
2207 | SCM_BOOL_F, | |
dcb410ec | 2208 | FUNC_NAME)); |
6d77c894 | 2209 | SCM_SET_SLOT (z, scm_si_specializers, |
80662eda MD |
2210 | scm_i_get_keyword (k_specializers, |
2211 | args, | |
2212 | len - 1, | |
2213 | SCM_EOL, | |
dcb410ec | 2214 | FUNC_NAME)); |
6d77c894 | 2215 | SCM_SET_SLOT (z, scm_si_procedure, |
80662eda MD |
2216 | scm_i_get_keyword (k_procedure, |
2217 | args, | |
2218 | len - 1, | |
e177058b | 2219 | SCM_BOOL_F, |
dcb410ec | 2220 | FUNC_NAME)); |
5487977b AW |
2221 | SCM_SET_SLOT (z, scm_si_formals, |
2222 | scm_i_get_keyword (k_formals, | |
2223 | args, | |
2224 | len - 1, | |
2225 | SCM_EOL, | |
2226 | FUNC_NAME)); | |
2227 | SCM_SET_SLOT (z, scm_si_body, | |
2228 | scm_i_get_keyword (k_body, | |
2229 | args, | |
2230 | len - 1, | |
2231 | SCM_EOL, | |
2232 | FUNC_NAME)); | |
e177058b AW |
2233 | SCM_SET_SLOT (z, scm_si_make_procedure, |
2234 | scm_i_get_keyword (k_make_procedure, | |
5487977b AW |
2235 | args, |
2236 | len - 1, | |
2237 | SCM_BOOL_F, | |
2238 | FUNC_NAME)); | |
80662eda MD |
2239 | } |
2240 | else | |
2241 | { | |
2242 | /* In all the others case, make a new class .... No instance here */ | |
b6cf4d02 | 2243 | SCM_SET_SLOT (z, scm_vtable_index_name, |
80662eda MD |
2244 | scm_i_get_keyword (k_name, |
2245 | args, | |
2246 | len - 1, | |
4a655e50 | 2247 | scm_from_latin1_symbol ("???"), |
dcb410ec | 2248 | FUNC_NAME)); |
6d77c894 | 2249 | SCM_SET_SLOT (z, scm_si_direct_supers, |
80662eda MD |
2250 | scm_i_get_keyword (k_dsupers, |
2251 | args, | |
2252 | len - 1, | |
2253 | SCM_EOL, | |
dcb410ec | 2254 | FUNC_NAME)); |
6d77c894 | 2255 | SCM_SET_SLOT (z, scm_si_direct_slots, |
80662eda MD |
2256 | scm_i_get_keyword (k_slots, |
2257 | args, | |
2258 | len - 1, | |
2259 | SCM_EOL, | |
dcb410ec | 2260 | FUNC_NAME)); |
80662eda MD |
2261 | } |
2262 | } | |
2263 | return z; | |
2264 | } | |
398d8ee1 | 2265 | #undef FUNC_NAME |
80662eda | 2266 | |
398d8ee1 KN |
2267 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2268 | (SCM l), | |
2269 | "") | |
2270 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2271 | { |
2272 | SCM gf; | |
c014a02e | 2273 | long len = scm_ilength (l); |
80662eda MD |
2274 | |
2275 | if (len == 0) | |
398d8ee1 | 2276 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2277 | |
2278 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2279 | SCM_VALIDATE_GENERIC (1, gf); |
d2e53ed6 | 2280 | if (scm_is_null (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2281 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2282 | |
2283 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2284 | } | |
398d8ee1 | 2285 | #undef FUNC_NAME |
80662eda | 2286 | |
398d8ee1 KN |
2287 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2288 | (SCM m1, SCM m2, SCM targs), | |
b1f57ea4 LC |
2289 | "Return true if method @var{m1} is more specific than @var{m2} " |
2290 | "given the argument types (classes) listed in @var{targs}.") | |
398d8ee1 | 2291 | #define FUNC_NAME s_scm_sys_method_more_specific_p |
80662eda | 2292 | { |
4057a3e0 MV |
2293 | SCM l, v, result; |
2294 | SCM *v_elts; | |
b1f57ea4 | 2295 | long i, len, m1_specs, m2_specs; |
4057a3e0 | 2296 | scm_t_array_handle handle; |
80662eda | 2297 | |
398d8ee1 KN |
2298 | SCM_VALIDATE_METHOD (1, m1); |
2299 | SCM_VALIDATE_METHOD (2, m2); | |
80662eda | 2300 | |
b1f57ea4 LC |
2301 | len = scm_ilength (targs); |
2302 | m1_specs = scm_ilength (SPEC_OF (m1)); | |
2303 | m2_specs = scm_ilength (SPEC_OF (m2)); | |
2304 | SCM_ASSERT ((len >= m1_specs) || (len >= m2_specs), | |
2305 | targs, SCM_ARG3, FUNC_NAME); | |
2306 | ||
2307 | /* Verify that all the arguments of TARGS are classes and place them | |
2308 | in a vector. */ | |
4057a3e0 | 2309 | |
00ffa0e7 | 2310 | v = scm_c_make_vector (len, SCM_EOL); |
4057a3e0 | 2311 | v_elts = scm_vector_writable_elements (v, &handle, NULL, NULL); |
80662eda | 2312 | |
b1f57ea4 LC |
2313 | for (i = 0, l = targs; |
2314 | i < len && scm_is_pair (l); | |
2315 | i++, l = SCM_CDR (l)) | |
4057a3e0 MV |
2316 | { |
2317 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); | |
b1f57ea4 | 2318 | v_elts[i] = SCM_CAR (l); |
4057a3e0 | 2319 | } |
4057a3e0 | 2320 | result = more_specificp (m1, m2, v_elts) ? SCM_BOOL_T: SCM_BOOL_F; |
c8857a4d MV |
2321 | |
2322 | scm_array_handle_release (&handle); | |
2323 | ||
4057a3e0 | 2324 | return result; |
80662eda | 2325 | } |
398d8ee1 | 2326 | #undef FUNC_NAME |
6d77c894 TTN |
2327 | |
2328 | ||
80662eda MD |
2329 | |
2330 | /****************************************************************************** | |
2331 | * | |
6d77c894 | 2332 | * Initializations |
80662eda MD |
2333 | * |
2334 | ******************************************************************************/ | |
2335 | ||
ae88d9bc AW |
2336 | /* Munge the CPL of C in place such that BEFORE appears before AFTER, |
2337 | assuming that currently the reverse is true. Recalculate slots and | |
2338 | associated getters-n-setters. */ | |
74b6d6e4 MD |
2339 | static void |
2340 | fix_cpl (SCM c, SCM before, SCM after) | |
2341 | { | |
2342 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2343 | SCM ls = scm_c_memq (after, cpl); | |
ae88d9bc AW |
2344 | SCM tail; |
2345 | ||
7888309b | 2346 | if (scm_is_false (ls)) |
74b6d6e4 MD |
2347 | /* if this condition occurs, fix_cpl should not be applied this way */ |
2348 | abort (); | |
ae88d9bc AW |
2349 | |
2350 | tail = scm_delq1_x (before, SCM_CDR (ls)); | |
74b6d6e4 MD |
2351 | SCM_SETCAR (ls, before); |
2352 | SCM_SETCDR (ls, scm_cons (after, tail)); | |
2353 | { | |
2354 | SCM dslots = SCM_SLOT (c, scm_si_direct_slots); | |
2355 | SCM slots = build_slots_list (maplist (dslots), cpl); | |
2356 | SCM g_n_s = compute_getters_n_setters (slots); | |
2357 | SCM_SET_SLOT (c, scm_si_slots, slots); | |
2358 | SCM_SET_SLOT (c, scm_si_getters_n_setters, g_n_s); | |
2359 | } | |
2360 | } | |
2361 | ||
80662eda MD |
2362 | |
2363 | static void | |
2364 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2365 | { | |
25d50a05 | 2366 | SCM tmp = scm_from_utf8_symbol (name); |
6d77c894 | 2367 | |
f39448c5 AW |
2368 | *var = scm_basic_make_class (meta, tmp, |
2369 | scm_is_pair (super) ? super : scm_list_1 (super), | |
2370 | slots); | |
28d0871b | 2371 | scm_module_define (scm_module_goops, tmp, *var); |
80662eda MD |
2372 | } |
2373 | ||
2374 | ||
2375 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2376 | ||
2377 | static void | |
2378 | create_standard_classes (void) | |
2379 | { | |
2380 | SCM slots; | |
4a655e50 AW |
2381 | SCM method_slots = scm_list_n (scm_from_latin1_symbol ("generic-function"), |
2382 | scm_from_latin1_symbol ("specializers"), | |
6b80d352 | 2383 | sym_procedure, |
4a655e50 AW |
2384 | scm_from_latin1_symbol ("formals"), |
2385 | scm_from_latin1_symbol ("body"), | |
2386 | scm_from_latin1_symbol ("make-procedure"), | |
21497600 | 2387 | SCM_UNDEFINED); |
4a655e50 | 2388 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("slot-definition"), |
1afff620 KN |
2389 | k_init_keyword, |
2390 | k_slot_definition)); | |
4a655e50 AW |
2391 | SCM gf_slots = scm_list_4 (scm_from_latin1_symbol ("methods"), |
2392 | scm_list_3 (scm_from_latin1_symbol ("n-specialized"), | |
1afff620 KN |
2393 | k_init_value, |
2394 | SCM_INUM0), | |
4a655e50 | 2395 | scm_list_3 (scm_from_latin1_symbol ("extended-by"), |
bbf8d523 | 2396 | k_init_value, |
b6cf4d02 | 2397 | SCM_EOL), |
4a655e50 | 2398 | scm_from_latin1_symbol ("effective-methods")); |
a9a90a88 | 2399 | SCM setter_slots = scm_list_1 (sym_setter); |
4a655e50 | 2400 | SCM egf_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("extends"), |
bbf8d523 MD |
2401 | k_init_value, |
2402 | SCM_EOL)); | |
80662eda MD |
2403 | /* Foreign class slot classes */ |
2404 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2405 | scm_class_class, scm_class_top, SCM_EOL); | |
2406 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2407 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
b6cf4d02 AW |
2408 | make_stdcls (&scm_class_hidden, "<hidden-slot>", |
2409 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
80662eda MD |
2410 | make_stdcls (&scm_class_opaque, "<opaque-slot>", |
2411 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2412 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2413 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2414 | make_stdcls (&scm_class_self, "<self-slot>", | |
b6cf4d02 | 2415 | scm_class_class, scm_class_read_only, SCM_EOL); |
80662eda MD |
2416 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", |
2417 | scm_class_class, | |
1afff620 | 2418 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda | 2419 | SCM_EOL); |
b6cf4d02 AW |
2420 | make_stdcls (&scm_class_protected_hidden, "<protected-hidden-slot>", |
2421 | scm_class_class, | |
2422 | scm_list_2 (scm_class_protected, scm_class_hidden), | |
2423 | SCM_EOL); | |
80662eda MD |
2424 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", |
2425 | scm_class_class, | |
1afff620 | 2426 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2427 | SCM_EOL); |
2428 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2429 | scm_class_class, scm_class_protected, SCM_EOL); | |
2430 | make_stdcls (&scm_class_int, "<int-slot>", | |
2431 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2432 | make_stdcls (&scm_class_float, "<float-slot>", | |
2433 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2434 | make_stdcls (&scm_class_double, "<double-slot>", | |
2435 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2436 | ||
2437 | /* Continue initialization of class <class> */ | |
6d77c894 | 2438 | |
80662eda | 2439 | slots = build_class_class_slots (); |
dcb410ec DH |
2440 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2441 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2442 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2443 | compute_getters_n_setters (slots)); | |
6d77c894 | 2444 | |
80662eda MD |
2445 | /* scm_class_generic functions classes */ |
2446 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2447 | scm_class_class, scm_class_class, SCM_EOL); | |
51f66c91 | 2448 | make_stdcls (&scm_class_applicable_struct_class, "<applicable-struct-class>", |
80662eda | 2449 | scm_class_class, scm_class_procedure_class, SCM_EOL); |
2f652c68 | 2450 | SCM_SET_VTABLE_FLAGS (scm_class_applicable_struct_class, SCM_VTABLE_FLAG_APPLICABLE_VTABLE); |
80662eda MD |
2451 | make_stdcls (&scm_class_method, "<method>", |
2452 | scm_class_class, scm_class_object, method_slots); | |
f8af5c6d | 2453 | make_stdcls (&scm_class_accessor_method, "<accessor-method>", |
51f66c91 | 2454 | scm_class_class, scm_class_method, amethod_slots); |
74b6d6e4 MD |
2455 | make_stdcls (&scm_class_applicable, "<applicable>", |
2456 | scm_class_class, scm_class_top, SCM_EOL); | |
51f66c91 AW |
2457 | make_stdcls (&scm_class_applicable_struct, "<applicable-struct>", |
2458 | scm_class_applicable_struct_class, | |
74b6d6e4 | 2459 | scm_list_2 (scm_class_object, scm_class_applicable), |
51f66c91 | 2460 | scm_list_1 (sym_procedure)); |
80662eda | 2461 | make_stdcls (&scm_class_generic, "<generic>", |
51f66c91 | 2462 | scm_class_applicable_struct_class, scm_class_applicable_struct, gf_slots); |
80662eda | 2463 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 | 2464 | make_stdcls (&scm_class_extended_generic, "<extended-generic>", |
51f66c91 | 2465 | scm_class_applicable_struct_class, scm_class_generic, egf_slots); |
bbf8d523 | 2466 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic, SCM_CLASSF_PURE_GENERIC); |
80662eda | 2467 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", |
51f66c91 | 2468 | scm_class_applicable_struct_class, scm_class_generic, setter_slots); |
80662eda | 2469 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); |
f8af5c6d | 2470 | make_stdcls (&scm_class_accessor, "<accessor>", |
51f66c91 | 2471 | scm_class_applicable_struct_class, scm_class_generic_with_setter, SCM_EOL); |
f8af5c6d | 2472 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 MD |
2473 | make_stdcls (&scm_class_extended_generic_with_setter, |
2474 | "<extended-generic-with-setter>", | |
51f66c91 | 2475 | scm_class_applicable_struct_class, |
ae88d9bc AW |
2476 | scm_list_2 (scm_class_extended_generic, |
2477 | scm_class_generic_with_setter), | |
bbf8d523 MD |
2478 | SCM_EOL); |
2479 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter, | |
2480 | SCM_CLASSF_PURE_GENERIC); | |
74b6d6e4 | 2481 | make_stdcls (&scm_class_extended_accessor, "<extended-accessor>", |
51f66c91 | 2482 | scm_class_applicable_struct_class, |
74b6d6e4 MD |
2483 | scm_list_2 (scm_class_accessor, |
2484 | scm_class_extended_generic_with_setter), | |
2485 | SCM_EOL); | |
ae88d9bc | 2486 | /* <extended-generic> is misplaced. */ |
74b6d6e4 | 2487 | fix_cpl (scm_class_extended_accessor, |
ae88d9bc | 2488 | scm_class_extended_generic, scm_class_generic_with_setter); |
74b6d6e4 | 2489 | SCM_SET_CLASS_FLAGS (scm_class_extended_accessor, SCM_CLASSF_PURE_GENERIC); |
80662eda MD |
2490 | |
2491 | /* Primitive types classes */ | |
2492 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2493 | scm_class_class, scm_class_top, SCM_EOL); | |
2494 | make_stdcls (&scm_class_char, "<char>", | |
2495 | scm_class_class, scm_class_top, SCM_EOL); | |
2496 | make_stdcls (&scm_class_list, "<list>", | |
2497 | scm_class_class, scm_class_top, SCM_EOL); | |
2498 | make_stdcls (&scm_class_pair, "<pair>", | |
2499 | scm_class_class, scm_class_list, SCM_EOL); | |
2500 | make_stdcls (&scm_class_null, "<null>", | |
2501 | scm_class_class, scm_class_list, SCM_EOL); | |
2502 | make_stdcls (&scm_class_string, "<string>", | |
2503 | scm_class_class, scm_class_top, SCM_EOL); | |
2504 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2505 | scm_class_class, scm_class_top, SCM_EOL); | |
2506 | make_stdcls (&scm_class_vector, "<vector>", | |
2507 | scm_class_class, scm_class_top, SCM_EOL); | |
e2c2a699 AW |
2508 | make_stdcls (&class_foreign, "<foreign>", |
2509 | scm_class_class, scm_class_top, SCM_EOL); | |
9ea31741 AW |
2510 | make_stdcls (&class_hashtable, "<hashtable>", |
2511 | scm_class_class, scm_class_top, SCM_EOL); | |
2512 | make_stdcls (&class_fluid, "<fluid>", | |
2513 | scm_class_class, scm_class_top, SCM_EOL); | |
2514 | make_stdcls (&class_dynamic_state, "<dynamic-state>", | |
c99de5aa | 2515 | scm_class_class, scm_class_top, SCM_EOL); |
6f3b0cc2 AW |
2516 | make_stdcls (&class_frame, "<frame>", |
2517 | scm_class_class, scm_class_top, SCM_EOL); | |
2518 | make_stdcls (&class_objcode, "<objcode>", | |
2519 | scm_class_class, scm_class_top, SCM_EOL); | |
2520 | make_stdcls (&class_vm, "<vm>", | |
2521 | scm_class_class, scm_class_top, SCM_EOL); | |
2522 | make_stdcls (&class_vm_cont, "<vm-continuation>", | |
2523 | scm_class_class, scm_class_top, SCM_EOL); | |
f826a886 AW |
2524 | make_stdcls (&class_bytevector, "<bytevector>", |
2525 | scm_class_class, scm_class_top, SCM_EOL); | |
2526 | make_stdcls (&class_uvec, "<uvec>", | |
2527 | scm_class_class, class_bytevector, SCM_EOL); | |
b2637c98 AW |
2528 | make_stdcls (&class_array, "<array>", |
2529 | scm_class_class, scm_class_top, SCM_EOL); | |
ff1feca9 AW |
2530 | make_stdcls (&class_bitvector, "<bitvector>", |
2531 | scm_class_class, scm_class_top, SCM_EOL); | |
80662eda MD |
2532 | make_stdcls (&scm_class_number, "<number>", |
2533 | scm_class_class, scm_class_top, SCM_EOL); | |
2534 | make_stdcls (&scm_class_complex, "<complex>", | |
2535 | scm_class_class, scm_class_number, SCM_EOL); | |
2536 | make_stdcls (&scm_class_real, "<real>", | |
2537 | scm_class_class, scm_class_complex, SCM_EOL); | |
2538 | make_stdcls (&scm_class_integer, "<integer>", | |
2539 | scm_class_class, scm_class_real, SCM_EOL); | |
f92e85f7 MV |
2540 | make_stdcls (&scm_class_fraction, "<fraction>", |
2541 | scm_class_class, scm_class_real, SCM_EOL); | |
80662eda MD |
2542 | make_stdcls (&scm_class_keyword, "<keyword>", |
2543 | scm_class_class, scm_class_top, SCM_EOL); | |
2544 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2545 | scm_class_class, scm_class_top, SCM_EOL); | |
2546 | make_stdcls (&scm_class_procedure, "<procedure>", | |
74b6d6e4 | 2547 | scm_class_procedure_class, scm_class_applicable, SCM_EOL); |
80662eda MD |
2548 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", |
2549 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2550 | make_stdcls (&scm_class_port, "<port>", | |
2551 | scm_class_class, scm_class_top, SCM_EOL); | |
2552 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2553 | scm_class_class, scm_class_port, SCM_EOL); | |
2554 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2555 | scm_class_class, scm_class_port, SCM_EOL); | |
2556 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2557 | scm_class_class, | |
1afff620 | 2558 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2559 | SCM_EOL); |
2560 | } | |
2561 | ||
2562 | /********************************************************************** | |
2563 | * | |
2564 | * Smob classes | |
2565 | * | |
2566 | **********************************************************************/ | |
2567 | ||
2568 | static SCM | |
da0e6c2b | 2569 | make_class_from_template (char const *template, char const *type_name, SCM supers, int applicablep) |
80662eda | 2570 | { |
28d0871b | 2571 | SCM name; |
80662eda MD |
2572 | if (type_name) |
2573 | { | |
2574 | char buffer[100]; | |
2575 | sprintf (buffer, template, type_name); | |
25d50a05 | 2576 | name = scm_from_utf8_symbol (buffer); |
80662eda MD |
2577 | } |
2578 | else | |
2579 | name = SCM_GOOPS_UNBOUND; | |
2580 | ||
28d0871b AW |
2581 | return scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2582 | name, supers, SCM_EOL); | |
80662eda MD |
2583 | } |
2584 | ||
9db8cf16 MG |
2585 | static SCM |
2586 | make_class_from_symbol (SCM type_name_sym, SCM supers, int applicablep) | |
2587 | { | |
28d0871b AW |
2588 | SCM name; |
2589 | ||
393baa8a | 2590 | if (scm_is_true (type_name_sym)) |
9db8cf16 MG |
2591 | { |
2592 | name = scm_string_append (scm_list_3 (scm_from_locale_string ("<"), | |
2593 | scm_symbol_to_string (type_name_sym), | |
2594 | scm_from_locale_string (">"))); | |
2595 | name = scm_string_to_symbol (name); | |
2596 | } | |
2597 | else | |
2598 | name = SCM_GOOPS_UNBOUND; | |
2599 | ||
28d0871b AW |
2600 | return scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2601 | name, supers, SCM_EOL); | |
9db8cf16 MG |
2602 | } |
2603 | ||
80662eda | 2604 | SCM |
da0e6c2b | 2605 | scm_make_extended_class (char const *type_name, int applicablep) |
80662eda MD |
2606 | { |
2607 | return make_class_from_template ("<%s>", | |
2608 | type_name, | |
74b6d6e4 MD |
2609 | scm_list_1 (applicablep |
2610 | ? scm_class_applicable | |
2611 | : scm_class_top), | |
2612 | applicablep); | |
2613 | } | |
2614 | ||
9db8cf16 MG |
2615 | static SCM |
2616 | scm_make_extended_class_from_symbol (SCM type_name_sym, int applicablep) | |
2617 | { | |
2618 | return make_class_from_symbol (type_name_sym, | |
2619 | scm_list_1 (applicablep | |
2620 | ? scm_class_applicable | |
2621 | : scm_class_top), | |
2622 | applicablep); | |
2623 | } | |
2624 | ||
74b6d6e4 MD |
2625 | void |
2626 | scm_i_inherit_applicable (SCM c) | |
2627 | { | |
2628 | if (!SCM_SUBCLASSP (c, scm_class_applicable)) | |
2629 | { | |
2630 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
2631 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2632 | /* patch scm_class_applicable into direct-supers */ | |
2633 | SCM top = scm_c_memq (scm_class_top, dsupers); | |
7888309b | 2634 | if (scm_is_false (top)) |
74b6d6e4 MD |
2635 | dsupers = scm_append (scm_list_2 (dsupers, |
2636 | scm_list_1 (scm_class_applicable))); | |
2637 | else | |
2638 | { | |
2639 | SCM_SETCAR (top, scm_class_applicable); | |
2640 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2641 | } | |
2642 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
2643 | /* patch scm_class_applicable into cpl */ | |
2644 | top = scm_c_memq (scm_class_top, cpl); | |
7888309b | 2645 | if (scm_is_false (top)) |
74b6d6e4 MD |
2646 | abort (); |
2647 | else | |
2648 | { | |
2649 | SCM_SETCAR (top, scm_class_applicable); | |
2650 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2651 | } | |
2652 | /* add class to direct-subclasses of scm_class_applicable */ | |
2653 | SCM_SET_SLOT (scm_class_applicable, | |
2654 | scm_si_direct_subclasses, | |
2655 | scm_cons (c, SCM_SLOT (scm_class_applicable, | |
2656 | scm_si_direct_subclasses))); | |
2657 | } | |
80662eda MD |
2658 | } |
2659 | ||
2660 | static void | |
2661 | create_smob_classes (void) | |
2662 | { | |
c014a02e | 2663 | long i; |
80662eda | 2664 | |
c891a40e | 2665 | for (i = 0; i < SCM_I_MAX_SMOB_TYPE_COUNT; ++i) |
393baa8a | 2666 | scm_smob_class[i] = SCM_BOOL_F; |
80662eda | 2667 | |
80662eda | 2668 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; |
6d77c894 | 2669 | |
80662eda | 2670 | for (i = 0; i < scm_numsmob; ++i) |
393baa8a | 2671 | if (scm_is_false (scm_smob_class[i])) |
74b6d6e4 MD |
2672 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), |
2673 | scm_smobs[i].apply != 0); | |
80662eda MD |
2674 | } |
2675 | ||
2676 | void | |
c014a02e | 2677 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2678 | { |
2679 | SCM c, class = make_class_from_template ("<%s-port>", | |
2680 | type_name, | |
74b6d6e4 MD |
2681 | scm_list_1 (scm_class_port), |
2682 | 0); | |
80662eda MD |
2683 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2684 | = make_class_from_template ("<%s-input-port>", | |
2685 | type_name, | |
74b6d6e4 MD |
2686 | scm_list_2 (class, scm_class_input_port), |
2687 | 0); | |
80662eda MD |
2688 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2689 | = make_class_from_template ("<%s-output-port>", | |
2690 | type_name, | |
74b6d6e4 MD |
2691 | scm_list_2 (class, scm_class_output_port), |
2692 | 0); | |
80662eda MD |
2693 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2694 | = c | |
2695 | = make_class_from_template ("<%s-input-output-port>", | |
2696 | type_name, | |
74b6d6e4 MD |
2697 | scm_list_2 (class, scm_class_input_output_port), |
2698 | 0); | |
80662eda | 2699 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2700 | SCM_SET_SLOT (c, scm_si_cpl, |
2701 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2702 | } |
2703 | ||
2704 | static void | |
2705 | create_port_classes (void) | |
2706 | { | |
c014a02e | 2707 | long i; |
80662eda | 2708 | |
62bd5d66 | 2709 | for (i = scm_c_num_port_types () - 1; i >= 0; i--) |
80662eda MD |
2710 | scm_make_port_classes (i, SCM_PTOBNAME (i)); |
2711 | } | |
2712 | ||
2713 | static SCM | |
74b6d6e4 MD |
2714 | make_struct_class (void *closure SCM_UNUSED, |
2715 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 2716 | { |
f3c6a02c AW |
2717 | if (scm_is_false (data)) |
2718 | scm_i_define_class_for_vtable (vtable); | |
80662eda MD |
2719 | return SCM_UNSPECIFIED; |
2720 | } | |
2721 | ||
2722 | static void | |
2723 | create_struct_classes (void) | |
2724 | { | |
ea742d29 | 2725 | /* FIXME: take the vtable_class_map while initializing goops? */ |
f3c6a02c AW |
2726 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, |
2727 | vtable_class_map); | |
80662eda MD |
2728 | } |
2729 | ||
2730 | /********************************************************************** | |
2731 | * | |
2732 | * C interface | |
2733 | * | |
2734 | **********************************************************************/ | |
2735 | ||
2736 | void | |
2737 | scm_load_goops () | |
2738 | { | |
2739 | if (!goops_loaded_p) | |
abd28220 | 2740 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2741 | } |
2742 | ||
e11208ca | 2743 | |
80662eda MD |
2744 | SCM_SYMBOL (sym_o, "o"); |
2745 | SCM_SYMBOL (sym_x, "x"); | |
2746 | ||
2747 | SCM_KEYWORD (k_accessor, "accessor"); | |
2748 | SCM_KEYWORD (k_getter, "getter"); | |
2749 | ||
80662eda MD |
2750 | SCM |
2751 | scm_ensure_accessor (SCM name) | |
2752 | { | |
3f48638c AW |
2753 | SCM var, gf; |
2754 | ||
2755 | var = scm_module_variable (scm_current_module (), name); | |
2756 | if (SCM_VARIABLEP (var) && !SCM_UNBNDP (SCM_VARIABLE_REF (var))) | |
2757 | gf = SCM_VARIABLE_REF (var); | |
2758 | else | |
2759 | gf = SCM_BOOL_F; | |
2760 | ||
f8af5c6d | 2761 | if (!SCM_IS_A_P (gf, scm_class_accessor)) |
80662eda | 2762 | { |
1afff620 | 2763 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
f8af5c6d | 2764 | gf = scm_make (scm_list_5 (scm_class_accessor, |
1afff620 | 2765 | k_name, name, k_setter, gf)); |
80662eda | 2766 | } |
3f48638c | 2767 | |
80662eda MD |
2768 | return gf; |
2769 | } | |
2770 | ||
80662eda MD |
2771 | #ifdef GUILE_DEBUG |
2772 | /* | |
2773 | * Debugging utilities | |
2774 | */ | |
2775 | ||
398d8ee1 KN |
2776 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2777 | (SCM obj), | |
6bcefd15 | 2778 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2779 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2780 | { |
7888309b | 2781 | return scm_from_bool (SCM_PUREGENERICP (obj)); |
80662eda | 2782 | } |
398d8ee1 | 2783 | #undef FUNC_NAME |
80662eda MD |
2784 | |
2785 | #endif /* GUILE_DEBUG */ | |
2786 | ||
2787 | /* | |
2788 | * Initialization | |
2789 | */ | |
2790 | ||
398d8ee1 KN |
2791 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2792 | (), | |
6bcefd15 MG |
2793 | "Announce that GOOPS is loaded and perform initialization\n" |
2794 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2795 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2796 | { |
2797 | goops_loaded_p = 1; | |
86d31dfe | 2798 | var_compute_applicable_methods = |
f39448c5 | 2799 | scm_module_variable (scm_module_goops, sym_compute_applicable_methods); |
bef95911 | 2800 | var_slot_unbound = |
f39448c5 | 2801 | scm_module_variable (scm_module_goops, sym_slot_unbound); |
bef95911 | 2802 | var_slot_missing = |
f39448c5 | 2803 | scm_module_variable (scm_module_goops, sym_slot_missing); |
bef95911 | 2804 | var_compute_cpl = |
f39448c5 | 2805 | scm_module_variable (scm_module_goops, sym_compute_cpl); |
bef95911 | 2806 | var_no_applicable_method = |
f39448c5 | 2807 | scm_module_variable (scm_module_goops, sym_no_applicable_method); |
bef95911 | 2808 | var_change_class = |
f39448c5 | 2809 | scm_module_variable (scm_module_goops, sym_change_class); |
a48d60b1 | 2810 | setup_extended_primitive_generics (); |
80662eda MD |
2811 | return SCM_UNSPECIFIED; |
2812 | } | |
398d8ee1 | 2813 | #undef FUNC_NAME |
80662eda MD |
2814 | |
2815 | SCM scm_module_goops; | |
2816 | ||
abd28220 MV |
2817 | SCM |
2818 | scm_init_goops_builtins (void) | |
80662eda | 2819 | { |
abd28220 | 2820 | scm_module_goops = scm_current_module (); |
80662eda | 2821 | |
80662eda MD |
2822 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); |
2823 | ||
2824 | #include "libguile/goops.x" | |
2825 | ||
bb764c0e | 2826 | hell = scm_calloc (hell_size * sizeof (*hell)); |
f39448c5 | 2827 | hell_mutex = scm_make_mutex (); |
80662eda MD |
2828 | |
2829 | create_basic_classes (); | |
2830 | create_standard_classes (); | |
2831 | create_smob_classes (); | |
2832 | create_struct_classes (); | |
2833 | create_port_classes (); | |
2834 | ||
2835 | { | |
4a655e50 | 2836 | SCM name = scm_from_latin1_symbol ("no-applicable-method"); |
f39448c5 AW |
2837 | scm_no_applicable_method = |
2838 | scm_make (scm_list_3 (scm_class_generic, k_name, name)); | |
28d0871b | 2839 | scm_module_define (scm_module_goops, name, scm_no_applicable_method); |
80662eda | 2840 | } |
abd28220 MV |
2841 | |
2842 | return SCM_UNSPECIFIED; | |
80662eda MD |
2843 | } |
2844 | ||
2845 | void | |
abd28220 | 2846 | scm_init_goops () |
80662eda | 2847 | { |
9a441ddb MV |
2848 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2849 | scm_init_goops_builtins); | |
80662eda | 2850 | } |
23437298 DH |
2851 | |
2852 | /* | |
2853 | Local Variables: | |
2854 | c-file-style: "gnu" | |
2855 | End: | |
2856 | */ |