Commit | Line | Data |
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649ec8d8 | 1 | /* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010,2011,2012,2014,2015 |
366ecaec | 2 | * Free Software Foundation, Inc. |
6d77c894 | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
6d77c894 | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
6d77c894 | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
80662eda MD |
19 | \f |
20 | ||
21 | /* This software is a derivative work of other copyrighted softwares; the | |
22 | * copyright notices of these softwares are placed in the file COPYRIGHTS | |
23 | * | |
24 | * This file is based upon stklos.c from the STk distribution by | |
25 | * Erick Gallesio <eg@unice.fr>. | |
26 | */ | |
27 | ||
dbb605f5 LC |
28 | #ifdef HAVE_CONFIG_H |
29 | # include <config.h> | |
30 | #endif | |
31 | ||
80662eda MD |
32 | #include <stdio.h> |
33 | ||
34 | #include "libguile/_scm.h" | |
35 | #include "libguile/alist.h" | |
4e047c3e | 36 | #include "libguile/async.h" |
539d5410 | 37 | #include "libguile/chars.h" |
80662eda MD |
38 | #include "libguile/debug.h" |
39 | #include "libguile/dynl.h" | |
40 | #include "libguile/dynwind.h" | |
41 | #include "libguile/eval.h" | |
9fdf9fd3 | 42 | #include "libguile/gsubr.h" |
80662eda MD |
43 | #include "libguile/hashtab.h" |
44 | #include "libguile/keywords.h" | |
45 | #include "libguile/macros.h" | |
46 | #include "libguile/modules.h" | |
80662eda MD |
47 | #include "libguile/ports.h" |
48 | #include "libguile/procprop.h" | |
efcebb5b | 49 | #include "libguile/programs.h" |
80662eda | 50 | #include "libguile/random.h" |
fdc28395 | 51 | #include "libguile/root.h" |
80662eda MD |
52 | #include "libguile/smob.h" |
53 | #include "libguile/strings.h" | |
54 | #include "libguile/strports.h" | |
55 | #include "libguile/vectors.h" | |
56 | #include "libguile/weaks.h" | |
efcebb5b | 57 | #include "libguile/vm.h" |
80662eda | 58 | |
ca83b028 | 59 | #include "libguile/validate.h" |
80662eda MD |
60 | #include "libguile/goops.h" |
61 | ||
80662eda MD |
62 | #define SPEC_OF(x) SCM_SLOT (x, scm_si_specializers) |
63 | ||
efcebb5b AW |
64 | /* Port classes */ |
65 | #define SCM_IN_PCLASS_INDEX 0 | |
66 | #define SCM_OUT_PCLASS_INDEX SCM_I_MAX_PORT_TYPE_COUNT | |
67 | #define SCM_INOUT_PCLASS_INDEX (2 * SCM_I_MAX_PORT_TYPE_COUNT) | |
68 | ||
bef95911 AW |
69 | /* this file is a mess. in theory, though, we shouldn't have many SCM references |
70 | -- most of the references should be to vars. */ | |
71 | ||
72 | static SCM var_slot_unbound = SCM_BOOL_F; | |
73 | static SCM var_slot_missing = SCM_BOOL_F; | |
74 | static SCM var_compute_cpl = SCM_BOOL_F; | |
75 | static SCM var_no_applicable_method = SCM_BOOL_F; | |
bef95911 AW |
76 | static SCM var_change_class = SCM_BOOL_F; |
77 | ||
78 | SCM_SYMBOL (sym_slot_unbound, "slot-unbound"); | |
79 | SCM_SYMBOL (sym_slot_missing, "slot-missing"); | |
80 | SCM_SYMBOL (sym_compute_cpl, "compute-cpl"); | |
81 | SCM_SYMBOL (sym_no_applicable_method, "no-applicable-method"); | |
82 | SCM_SYMBOL (sym_memoize_method_x, "memoize-method!"); | |
83 | SCM_SYMBOL (sym_change_class, "change-class"); | |
84 | ||
85 | SCM_VARIABLE (scm_var_make_extended_generic, "make-extended-generic"); | |
86 | ||
87 | ||
88 | /* FIXME, exports should come from the scm file only */ | |
89 | #define DEFVAR(v, val) \ | |
90 | { scm_module_define (scm_module_goops, (v), (val)); \ | |
91 | scm_module_export (scm_module_goops, scm_list_1 ((v))); \ | |
92 | } | |
93 | ||
80662eda MD |
94 | |
95 | /* Class redefinition protocol: | |
96 | ||
97 | A class is represented by a heap header h1 which points to a | |
98 | malloc:ed memory block m1. | |
99 | ||
100 | When a new version of a class is created, a new header h2 and | |
101 | memory block m2 are allocated. The headers h1 and h2 then switch | |
102 | pointers so that h1 refers to m2 and h2 to m1. In this way, names | |
103 | bound to h1 will point to the new class at the same time as h2 will | |
7346de61 | 104 | be a handle which the GC will use to free m1. |
80662eda MD |
105 | |
106 | The `redefined' slot of m1 will be set to point to h1. An old | |
7346de61 | 107 | instance will have its class pointer (the CAR of the heap header) |
80662eda MD |
108 | pointing to m1. The non-immediate `redefined'-slot in m1 indicates |
109 | the class modification and the new class pointer can be found via | |
110 | h1. | |
111 | */ | |
112 | ||
0fd7dcd3 MD |
113 | #define TEST_CHANGE_CLASS(obj, class) \ |
114 | { \ | |
115 | class = SCM_CLASS_OF (obj); \ | |
7888309b | 116 | if (scm_is_true (SCM_OBJ_CLASS_REDEF (obj))) \ |
0fd7dcd3 MD |
117 | { \ |
118 | scm_change_object_class (obj, class, SCM_OBJ_CLASS_REDEF (obj));\ | |
119 | class = SCM_CLASS_OF (obj); \ | |
120 | } \ | |
80662eda MD |
121 | } |
122 | ||
123 | #define NXT_MTHD_METHODS(m) (SCM_VELTS (m)[1]) | |
124 | #define NXT_MTHD_ARGS(m) (SCM_VELTS (m)[2]) | |
125 | ||
126 | #define SCM_GOOPS_UNBOUND SCM_UNBOUND | |
d223c3fc | 127 | #define SCM_GOOPS_UNBOUNDP(x) (scm_is_eq (x, SCM_GOOPS_UNBOUND)) |
80662eda MD |
128 | |
129 | static int goops_loaded_p = 0; | |
92c2555f | 130 | static scm_t_rstate *goops_rstate; |
80662eda | 131 | |
539d5410 MV |
132 | /* These variables are filled in by the object system when loaded. */ |
133 | SCM scm_class_boolean, scm_class_char, scm_class_pair; | |
134 | SCM scm_class_procedure, scm_class_string, scm_class_symbol; | |
ea68d342 | 135 | SCM scm_class_primitive_generic; |
9ea31741 | 136 | SCM scm_class_vector, scm_class_null; |
539d5410 MV |
137 | SCM scm_class_integer, scm_class_real, scm_class_complex, scm_class_fraction; |
138 | SCM scm_class_unknown; | |
80662eda | 139 | SCM scm_class_top, scm_class_object, scm_class_class; |
74b6d6e4 | 140 | SCM scm_class_applicable; |
51f66c91 | 141 | SCM scm_class_applicable_struct, scm_class_applicable_struct_with_setter; |
bbf8d523 | 142 | SCM scm_class_generic, scm_class_generic_with_setter; |
f8af5c6d | 143 | SCM scm_class_accessor; |
bbf8d523 | 144 | SCM scm_class_extended_generic, scm_class_extended_generic_with_setter; |
74b6d6e4 | 145 | SCM scm_class_extended_accessor; |
bbf8d523 | 146 | SCM scm_class_method; |
51f66c91 | 147 | SCM scm_class_accessor_method; |
80662eda | 148 | SCM scm_class_procedure_class; |
51f66c91 | 149 | SCM scm_class_applicable_struct_class; |
80662eda MD |
150 | SCM scm_class_number, scm_class_list; |
151 | SCM scm_class_keyword; | |
152 | SCM scm_class_port, scm_class_input_output_port; | |
153 | SCM scm_class_input_port, scm_class_output_port; | |
80662eda MD |
154 | SCM scm_class_foreign_slot; |
155 | SCM scm_class_self, scm_class_protected; | |
b6cf4d02 AW |
156 | SCM scm_class_hidden, scm_class_opaque, scm_class_read_only; |
157 | SCM scm_class_protected_hidden, scm_class_protected_opaque, scm_class_protected_read_only; | |
80662eda MD |
158 | SCM scm_class_scm; |
159 | SCM scm_class_int, scm_class_float, scm_class_double; | |
160 | ||
e2c2a699 | 161 | static SCM class_foreign; |
9ea31741 AW |
162 | static SCM class_hashtable; |
163 | static SCM class_fluid; | |
164 | static SCM class_dynamic_state; | |
6f3b0cc2 AW |
165 | static SCM class_frame; |
166 | static SCM class_objcode; | |
167 | static SCM class_vm; | |
168 | static SCM class_vm_cont; | |
f826a886 AW |
169 | static SCM class_bytevector; |
170 | static SCM class_uvec; | |
b2637c98 | 171 | static SCM class_array; |
ff1feca9 | 172 | static SCM class_bitvector; |
9ea31741 | 173 | |
f3c6a02c | 174 | static SCM vtable_class_map = SCM_BOOL_F; |
ea742d29 | 175 | static scm_i_pthread_mutex_t vtable_class_map_lock = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
f3c6a02c | 176 | |
63385df2 LC |
177 | /* Port classes. Allocate 3 times the maximum number of port types so that |
178 | input ports, output ports, and in/out ports can be stored at different | |
179 | offsets. See `SCM_IN_PCLASS_INDEX' et al. */ | |
180 | SCM scm_port_class[3 * SCM_I_MAX_PORT_TYPE_COUNT]; | |
181 | ||
182 | /* SMOB classes. */ | |
47455469 | 183 | SCM scm_smob_class[SCM_I_MAX_SMOB_TYPE_COUNT]; |
539d5410 MV |
184 | |
185 | SCM scm_no_applicable_method; | |
186 | ||
80662eda MD |
187 | SCM_SYMBOL (scm_sym_define_public, "define-public"); |
188 | ||
189 | static SCM scm_make_unbound (void); | |
190 | static SCM scm_unbound_p (SCM obj); | |
398d8ee1 KN |
191 | static SCM scm_assert_bound (SCM value, SCM obj); |
192 | static SCM scm_at_assert_bound_ref (SCM obj, SCM index); | |
193 | static SCM scm_sys_goops_loaded (void); | |
9db8cf16 MG |
194 | static SCM scm_make_extended_class_from_symbol (SCM type_name_sym, |
195 | int applicablep); | |
80662eda | 196 | |
f3c6a02c AW |
197 | |
198 | SCM | |
199 | scm_i_define_class_for_vtable (SCM vtable) | |
200 | { | |
201 | SCM class; | |
202 | ||
ea742d29 AW |
203 | scm_i_pthread_mutex_lock (&vtable_class_map_lock); |
204 | ||
f3c6a02c AW |
205 | if (scm_is_false (vtable_class_map)) |
206 | vtable_class_map = scm_make_weak_key_hash_table (SCM_UNDEFINED); | |
207 | ||
208 | if (scm_is_false (scm_struct_vtable_p (vtable))) | |
209 | abort (); | |
210 | ||
211 | class = scm_hashq_ref (vtable_class_map, vtable, SCM_BOOL_F); | |
212 | ||
ea742d29 AW |
213 | scm_i_pthread_mutex_unlock (&vtable_class_map_lock); |
214 | ||
f3c6a02c AW |
215 | if (scm_is_false (class)) |
216 | { | |
217 | if (SCM_UNPACK (scm_class_class)) | |
218 | { | |
219 | SCM name = SCM_VTABLE_NAME (vtable); | |
220 | if (!scm_is_symbol (name)) | |
221 | name = scm_string_to_symbol (scm_nullstr); | |
222 | ||
223 | class = scm_make_extended_class_from_symbol | |
224 | (name, SCM_VTABLE_FLAG_IS_SET (vtable, SCM_VTABLE_FLAG_APPLICABLE)); | |
225 | } | |
226 | else | |
227 | /* `create_struct_classes' will fill this in later. */ | |
228 | class = SCM_BOOL_F; | |
ea742d29 AW |
229 | |
230 | /* Don't worry about races. This only happens when creating a | |
231 | vtable, which happens by definition in one thread. */ | |
232 | scm_i_pthread_mutex_lock (&vtable_class_map_lock); | |
f3c6a02c | 233 | scm_hashq_set_x (vtable_class_map, vtable, class); |
ea742d29 | 234 | scm_i_pthread_mutex_unlock (&vtable_class_map_lock); |
f3c6a02c AW |
235 | } |
236 | ||
237 | return class; | |
238 | } | |
239 | ||
539d5410 MV |
240 | /* This function is used for efficient type dispatch. */ |
241 | SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0, | |
242 | (SCM x), | |
243 | "Return the class of @var{x}.") | |
244 | #define FUNC_NAME s_scm_class_of | |
245 | { | |
246 | switch (SCM_ITAG3 (x)) | |
247 | { | |
248 | case scm_tc3_int_1: | |
249 | case scm_tc3_int_2: | |
250 | return scm_class_integer; | |
251 | ||
252 | case scm_tc3_imm24: | |
253 | if (SCM_CHARP (x)) | |
254 | return scm_class_char; | |
255 | else if (scm_is_bool (x)) | |
256 | return scm_class_boolean; | |
257 | else if (scm_is_null (x)) | |
258 | return scm_class_null; | |
259 | else | |
260 | return scm_class_unknown; | |
261 | ||
262 | case scm_tc3_cons: | |
263 | switch (SCM_TYP7 (x)) | |
264 | { | |
265 | case scm_tcs_cons_nimcar: | |
266 | return scm_class_pair; | |
539d5410 MV |
267 | case scm_tc7_symbol: |
268 | return scm_class_symbol; | |
269 | case scm_tc7_vector: | |
270 | case scm_tc7_wvect: | |
271 | return scm_class_vector; | |
5b46a8c2 | 272 | case scm_tc7_pointer: |
e2c2a699 | 273 | return class_foreign; |
c99de5aa | 274 | case scm_tc7_hashtable: |
9ea31741 AW |
275 | return class_hashtable; |
276 | case scm_tc7_fluid: | |
277 | return class_fluid; | |
278 | case scm_tc7_dynamic_state: | |
279 | return class_dynamic_state; | |
6f3b0cc2 AW |
280 | case scm_tc7_frame: |
281 | return class_frame; | |
282 | case scm_tc7_objcode: | |
283 | return class_objcode; | |
284 | case scm_tc7_vm: | |
285 | return class_vm; | |
286 | case scm_tc7_vm_cont: | |
287 | return class_vm_cont; | |
f826a886 AW |
288 | case scm_tc7_bytevector: |
289 | if (SCM_BYTEVECTOR_ELEMENT_TYPE (x) == SCM_ARRAY_ELEMENT_TYPE_VU8) | |
290 | return class_bytevector; | |
291 | else | |
292 | return class_uvec; | |
b2637c98 AW |
293 | case scm_tc7_array: |
294 | return class_array; | |
ff1feca9 AW |
295 | case scm_tc7_bitvector: |
296 | return class_bitvector; | |
539d5410 MV |
297 | case scm_tc7_string: |
298 | return scm_class_string; | |
299 | case scm_tc7_number: | |
300 | switch SCM_TYP16 (x) { | |
301 | case scm_tc16_big: | |
302 | return scm_class_integer; | |
303 | case scm_tc16_real: | |
304 | return scm_class_real; | |
305 | case scm_tc16_complex: | |
306 | return scm_class_complex; | |
307 | case scm_tc16_fraction: | |
308 | return scm_class_fraction; | |
309 | } | |
2fb924f6 | 310 | case scm_tc7_program: |
b2b33168 AW |
311 | if (SCM_PROGRAM_IS_PRIMITIVE_GENERIC (x) |
312 | && SCM_UNPACK (*SCM_SUBR_GENERIC (x))) | |
fd12a19a AW |
313 | return scm_class_primitive_generic; |
314 | else | |
315 | return scm_class_procedure; | |
539d5410 MV |
316 | |
317 | case scm_tc7_smob: | |
318 | { | |
319 | scm_t_bits type = SCM_TYP16 (x); | |
320 | if (type != scm_tc16_port_with_ps) | |
321 | return scm_smob_class[SCM_TC2SMOBNUM (type)]; | |
322 | x = SCM_PORT_WITH_PS_PORT (x); | |
323 | /* fall through to ports */ | |
324 | } | |
325 | case scm_tc7_port: | |
326 | return scm_port_class[(SCM_WRTNG & SCM_CELL_WORD_0 (x) | |
327 | ? (SCM_RDNG & SCM_CELL_WORD_0 (x) | |
328 | ? SCM_INOUT_PCLASS_INDEX | SCM_PTOBNUM (x) | |
329 | : SCM_OUT_PCLASS_INDEX | SCM_PTOBNUM (x)) | |
330 | : SCM_IN_PCLASS_INDEX | SCM_PTOBNUM (x))]; | |
331 | case scm_tcs_struct: | |
332 | if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS_VALID) | |
333 | return SCM_CLASS_OF (x); | |
334 | else if (SCM_OBJ_CLASS_FLAGS (x) & SCM_CLASSF_GOOPS) | |
335 | { | |
336 | /* Goops object */ | |
337 | if (! scm_is_false (SCM_OBJ_CLASS_REDEF (x))) | |
338 | scm_change_object_class (x, | |
339 | SCM_CLASS_OF (x), /* old */ | |
340 | SCM_OBJ_CLASS_REDEF (x)); /* new */ | |
341 | return SCM_CLASS_OF (x); | |
342 | } | |
343 | else | |
f3c6a02c | 344 | return scm_i_define_class_for_vtable (SCM_CLASS_OF (x)); |
539d5410 MV |
345 | default: |
346 | if (scm_is_pair (x)) | |
347 | return scm_class_pair; | |
348 | else | |
349 | return scm_class_unknown; | |
350 | } | |
351 | ||
352 | case scm_tc3_struct: | |
353 | case scm_tc3_tc7_1: | |
354 | case scm_tc3_tc7_2: | |
314b8716 | 355 | /* case scm_tc3_unused: */ |
539d5410 MV |
356 | /* Never reached */ |
357 | break; | |
358 | } | |
359 | return scm_class_unknown; | |
360 | } | |
361 | #undef FUNC_NAME | |
362 | ||
80662eda MD |
363 | /****************************************************************************** |
364 | * | |
365 | * Compute-cpl | |
366 | * | |
bbf8d523 MD |
367 | * This version doesn't fully handle multiple-inheritance. It serves |
368 | * only for booting classes and will be overloaded in Scheme | |
80662eda MD |
369 | * |
370 | ******************************************************************************/ | |
371 | ||
80662eda MD |
372 | static SCM |
373 | map (SCM (*proc) (SCM), SCM ls) | |
374 | { | |
d2e53ed6 | 375 | if (scm_is_null (ls)) |
80662eda | 376 | return ls; |
6b80d352 DH |
377 | else |
378 | { | |
379 | SCM res = scm_cons (proc (SCM_CAR (ls)), SCM_EOL); | |
380 | SCM h = res; | |
381 | ls = SCM_CDR (ls); | |
13d807b7 | 382 | while (scm_is_pair (ls)) |
6b80d352 DH |
383 | { |
384 | SCM_SETCDR (h, scm_cons (proc (SCM_CAR (ls)), SCM_EOL)); | |
385 | h = SCM_CDR (h); | |
386 | ls = SCM_CDR (ls); | |
387 | } | |
388 | return res; | |
389 | } | |
80662eda MD |
390 | } |
391 | ||
392 | static SCM | |
393 | filter_cpl (SCM ls) | |
394 | { | |
395 | SCM res = SCM_EOL; | |
13d807b7 | 396 | while (scm_is_pair (ls)) |
80662eda MD |
397 | { |
398 | SCM el = SCM_CAR (ls); | |
7888309b | 399 | if (scm_is_false (scm_c_memq (el, res))) |
80662eda MD |
400 | res = scm_cons (el, res); |
401 | ls = SCM_CDR (ls); | |
402 | } | |
403 | return res; | |
404 | } | |
405 | ||
406 | static SCM | |
407 | compute_cpl (SCM class) | |
408 | { | |
409 | if (goops_loaded_p) | |
bef95911 | 410 | return scm_call_1 (SCM_VARIABLE_REF (var_compute_cpl), class); |
80662eda MD |
411 | else |
412 | { | |
413 | SCM supers = SCM_SLOT (class, scm_si_direct_supers); | |
414 | SCM ls = scm_append (scm_acons (class, supers, | |
415 | map (compute_cpl, supers))); | |
416 | return scm_reverse_x (filter_cpl (ls), SCM_EOL); | |
417 | } | |
418 | } | |
419 | ||
420 | /****************************************************************************** | |
421 | * | |
422 | * compute-slots | |
423 | * | |
424 | ******************************************************************************/ | |
425 | ||
426 | static SCM | |
427 | remove_duplicate_slots (SCM l, SCM res, SCM slots_already_seen) | |
428 | { | |
429 | SCM tmp; | |
430 | ||
13d807b7 | 431 | if (!scm_is_pair (l)) |
80662eda MD |
432 | return res; |
433 | ||
434 | tmp = SCM_CAAR (l); | |
cc95e00a | 435 | if (!scm_is_symbol (tmp)) |
1afff620 | 436 | scm_misc_error ("%compute-slots", "bad slot name ~S", scm_list_1 (tmp)); |
6d77c894 | 437 | |
7888309b | 438 | if (scm_is_false (scm_c_memq (tmp, slots_already_seen))) { |
80662eda MD |
439 | res = scm_cons (SCM_CAR (l), res); |
440 | slots_already_seen = scm_cons (tmp, slots_already_seen); | |
441 | } | |
6d77c894 | 442 | |
80662eda MD |
443 | return remove_duplicate_slots (SCM_CDR (l), res, slots_already_seen); |
444 | } | |
445 | ||
13d807b7 AW |
446 | static void |
447 | check_cpl (SCM slots, SCM bslots) | |
448 | { | |
449 | for (; scm_is_pair (bslots); bslots = SCM_CDR (bslots)) | |
450 | if (scm_is_true (scm_assq (SCM_CAAR (bslots), slots))) | |
451 | scm_misc_error ("init-object", "a predefined <class> inherited " | |
452 | "field cannot be redefined", SCM_EOL); | |
453 | } | |
454 | ||
455 | static SCM | |
456 | build_class_class_slots (void); | |
457 | ||
80662eda MD |
458 | static SCM |
459 | build_slots_list (SCM dslots, SCM cpl) | |
460 | { | |
13d807b7 AW |
461 | SCM bslots, class_slots; |
462 | int classp; | |
463 | SCM res = dslots; | |
464 | ||
465 | class_slots = SCM_EOL; | |
466 | classp = scm_is_true (scm_memq (scm_class_class, cpl)); | |
467 | ||
468 | if (classp) | |
469 | { | |
470 | bslots = build_class_class_slots (); | |
471 | check_cpl (res, bslots); | |
472 | } | |
473 | else | |
474 | bslots = SCM_EOL; | |
475 | ||
476 | if (scm_is_pair (cpl)) | |
477 | { | |
478 | for (cpl = SCM_CDR (cpl); scm_is_pair (cpl); cpl = SCM_CDR (cpl)) | |
479 | { | |
480 | SCM new_slots = SCM_SLOT (SCM_CAR (cpl), | |
481 | scm_si_direct_slots); | |
482 | if (classp) | |
483 | { | |
484 | if (!scm_is_eq (SCM_CAR (cpl), scm_class_class)) | |
485 | check_cpl (new_slots, bslots); | |
486 | else | |
487 | { | |
488 | /* Move class slots to the head of the list. */ | |
489 | class_slots = new_slots; | |
490 | continue; | |
491 | } | |
492 | } | |
493 | res = scm_append (scm_list_2 (new_slots, res)); | |
494 | } | |
495 | } | |
496 | else | |
497 | scm_misc_error ("%compute-slots", "malformed cpl argument in " | |
498 | "build_slots_list", SCM_EOL); | |
80662eda | 499 | |
13d807b7 AW |
500 | /* make sure to add the <class> slots to the head of the list */ |
501 | if (classp) | |
502 | res = scm_append (scm_list_2 (class_slots, res)); | |
80662eda MD |
503 | |
504 | /* res contains a list of slots. Remove slots which appears more than once */ | |
505 | return remove_duplicate_slots (scm_reverse (res), SCM_EOL, SCM_EOL); | |
506 | } | |
507 | ||
508 | static SCM | |
509 | maplist (SCM ls) | |
510 | { | |
511 | SCM orig = ls; | |
d2e53ed6 | 512 | while (!scm_is_null (ls)) |
80662eda | 513 | { |
13d807b7 AW |
514 | if (!scm_is_pair (ls)) |
515 | scm_misc_error ("%compute-slots", "malformed ls argument in " | |
516 | "maplist", SCM_EOL); | |
d2e53ed6 | 517 | if (!scm_is_pair (SCM_CAR (ls))) |
13d807b7 | 518 | SCM_SETCAR (ls, scm_cons (SCM_CAR (ls), SCM_EOL)); |
80662eda MD |
519 | ls = SCM_CDR (ls); |
520 | } | |
521 | return orig; | |
522 | } | |
523 | ||
80662eda | 524 | |
23437298 DH |
525 | SCM_DEFINE (scm_sys_compute_slots, "%compute-slots", 1, 0, 0, |
526 | (SCM class), | |
5352393c MG |
527 | "Return a list consisting of the names of all slots belonging to\n" |
528 | "class @var{class}, i. e. the slots of @var{class} and of all of\n" | |
6d77c894 | 529 | "its superclasses.") |
23437298 | 530 | #define FUNC_NAME s_scm_sys_compute_slots |
80662eda | 531 | { |
398d8ee1 | 532 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
533 | return build_slots_list (SCM_SLOT (class, scm_si_direct_slots), |
534 | SCM_SLOT (class, scm_si_cpl)); | |
535 | } | |
23437298 DH |
536 | #undef FUNC_NAME |
537 | ||
80662eda MD |
538 | |
539 | /****************************************************************************** | |
540 | * | |
541 | * compute-getters-n-setters | |
6d77c894 TTN |
542 | * |
543 | * This version doesn't handle slot options. It serves only for booting | |
dcb410ec | 544 | * classes and will be overloaded in Scheme. |
80662eda MD |
545 | * |
546 | ******************************************************************************/ | |
547 | ||
548 | SCM_KEYWORD (k_init_value, "init-value"); | |
549 | SCM_KEYWORD (k_init_thunk, "init-thunk"); | |
550 | ||
551 | static SCM | |
552 | compute_getters_n_setters (SCM slots) | |
553 | { | |
554 | SCM res = SCM_EOL; | |
555 | SCM *cdrloc = &res; | |
c014a02e | 556 | long i = 0; |
80662eda | 557 | |
d2e53ed6 | 558 | for ( ; !scm_is_null (slots); slots = SCM_CDR (slots)) |
80662eda MD |
559 | { |
560 | SCM init = SCM_BOOL_F; | |
561 | SCM options = SCM_CDAR (slots); | |
d2e53ed6 | 562 | if (!scm_is_null (options)) |
80662eda | 563 | { |
b2b33168 AW |
564 | init = scm_get_keyword (k_init_value, options, SCM_PACK (0)); |
565 | if (SCM_UNPACK (init)) | |
366ecaec | 566 | { |
9d019f9b AW |
567 | init = scm_primitive_eval (scm_list_3 (scm_sym_lambda, |
568 | SCM_EOL, | |
569 | scm_list_2 (scm_sym_quote, | |
570 | init))); | |
366ecaec | 571 | } |
80662eda MD |
572 | else |
573 | init = scm_get_keyword (k_init_thunk, options, SCM_BOOL_F); | |
574 | } | |
575 | *cdrloc = scm_cons (scm_cons (SCM_CAAR (slots), | |
576 | scm_cons (init, | |
e11e83f3 | 577 | scm_from_int (i++))), |
80662eda MD |
578 | SCM_EOL); |
579 | cdrloc = SCM_CDRLOC (*cdrloc); | |
580 | } | |
581 | return res; | |
582 | } | |
583 | ||
584 | /****************************************************************************** | |
585 | * | |
586 | * initialize-object | |
587 | * | |
588 | ******************************************************************************/ | |
589 | ||
590 | /*fixme* Manufacture keywords in advance */ | |
591 | SCM | |
c014a02e | 592 | scm_i_get_keyword (SCM key, SCM l, long len, SCM default_value, const char *subr) |
80662eda | 593 | { |
c014a02e | 594 | long i; |
23437298 DH |
595 | |
596 | for (i = 0; i != len; i += 2) | |
80662eda | 597 | { |
23437298 DH |
598 | SCM obj = SCM_CAR (l); |
599 | ||
c598539a | 600 | if (!scm_is_keyword (obj)) |
1afff620 | 601 | scm_misc_error (subr, "bad keyword: ~S", scm_list_1 (obj)); |
bc36d050 | 602 | else if (scm_is_eq (obj, key)) |
80662eda | 603 | return SCM_CADR (l); |
23437298 DH |
604 | else |
605 | l = SCM_CDDR (l); | |
80662eda | 606 | } |
23437298 | 607 | |
80662eda MD |
608 | return default_value; |
609 | } | |
610 | ||
80662eda | 611 | |
23437298 DH |
612 | SCM_DEFINE (scm_get_keyword, "get-keyword", 3, 0, 0, |
613 | (SCM key, SCM l, SCM default_value), | |
5352393c MG |
614 | "Determine an associated value for the keyword @var{key} from\n" |
615 | "the list @var{l}. The list @var{l} has to consist of an even\n" | |
616 | "number of elements, where, starting with the first, every\n" | |
617 | "second element is a keyword, followed by its associated value.\n" | |
618 | "If @var{l} does not hold a value for @var{key}, the value\n" | |
619 | "@var{default_value} is returned.") | |
23437298 | 620 | #define FUNC_NAME s_scm_get_keyword |
80662eda | 621 | { |
c014a02e | 622 | long len; |
23437298 | 623 | |
c598539a | 624 | SCM_ASSERT (scm_is_keyword (key), key, SCM_ARG1, FUNC_NAME); |
80662eda | 625 | len = scm_ilength (l); |
b6311c08 | 626 | if (len < 0 || len % 2 == 1) |
1afff620 | 627 | scm_misc_error (FUNC_NAME, "Bad keyword-value list: ~S", scm_list_1 (l)); |
23437298 DH |
628 | |
629 | return scm_i_get_keyword (key, l, len, default_value, FUNC_NAME); | |
80662eda | 630 | } |
23437298 DH |
631 | #undef FUNC_NAME |
632 | ||
80662eda | 633 | |
80662eda MD |
634 | SCM_KEYWORD (k_init_keyword, "init-keyword"); |
635 | ||
636 | static SCM get_slot_value (SCM class, SCM obj, SCM slotdef); | |
637 | static SCM set_slot_value (SCM class, SCM obj, SCM slotdef, SCM value); | |
638 | ||
398d8ee1 KN |
639 | SCM_DEFINE (scm_sys_initialize_object, "%initialize-object", 2, 0, 0, |
640 | (SCM obj, SCM initargs), | |
6bcefd15 MG |
641 | "Initialize the object @var{obj} with the given arguments\n" |
642 | "@var{initargs}.") | |
398d8ee1 | 643 | #define FUNC_NAME s_scm_sys_initialize_object |
80662eda MD |
644 | { |
645 | SCM tmp, get_n_set, slots; | |
646 | SCM class = SCM_CLASS_OF (obj); | |
c014a02e | 647 | long n_initargs; |
80662eda | 648 | |
398d8ee1 | 649 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda | 650 | n_initargs = scm_ilength (initargs); |
398d8ee1 | 651 | SCM_ASSERT ((n_initargs & 1) == 0, initargs, SCM_ARG2, FUNC_NAME); |
6d77c894 | 652 | |
80662eda MD |
653 | get_n_set = SCM_SLOT (class, scm_si_getters_n_setters); |
654 | slots = SCM_SLOT (class, scm_si_slots); | |
6d77c894 | 655 | |
80662eda MD |
656 | /* See for each slot how it must be initialized */ |
657 | for (; | |
d2e53ed6 | 658 | !scm_is_null (slots); |
80662eda MD |
659 | get_n_set = SCM_CDR (get_n_set), slots = SCM_CDR (slots)) |
660 | { | |
661 | SCM slot_name = SCM_CAR (slots); | |
48ad85fb | 662 | SCM slot_value = SCM_GOOPS_UNBOUND; |
6d77c894 | 663 | |
d2e53ed6 | 664 | if (!scm_is_null (SCM_CDR (slot_name))) |
80662eda MD |
665 | { |
666 | /* This slot admits (perhaps) to be initialized at creation time */ | |
c014a02e | 667 | long n = scm_ilength (SCM_CDR (slot_name)); |
80662eda | 668 | if (n & 1) /* odd or -1 */ |
398d8ee1 | 669 | SCM_MISC_ERROR ("class contains bogus slot definition: ~S", |
1afff620 | 670 | scm_list_1 (slot_name)); |
80662eda MD |
671 | tmp = scm_i_get_keyword (k_init_keyword, |
672 | SCM_CDR (slot_name), | |
673 | n, | |
b2b33168 | 674 | SCM_PACK (0), |
398d8ee1 | 675 | FUNC_NAME); |
80662eda | 676 | slot_name = SCM_CAR (slot_name); |
b2b33168 | 677 | if (SCM_UNPACK (tmp)) |
80662eda MD |
678 | { |
679 | /* an initarg was provided for this slot */ | |
c598539a | 680 | if (!scm_is_keyword (tmp)) |
398d8ee1 | 681 | SCM_MISC_ERROR ("initarg must be a keyword. It was ~S", |
1afff620 | 682 | scm_list_1 (tmp)); |
80662eda MD |
683 | slot_value = scm_i_get_keyword (tmp, |
684 | initargs, | |
685 | n_initargs, | |
48ad85fb | 686 | SCM_GOOPS_UNBOUND, |
398d8ee1 | 687 | FUNC_NAME); |
80662eda MD |
688 | } |
689 | } | |
690 | ||
48ad85fb | 691 | if (!SCM_GOOPS_UNBOUNDP (slot_value)) |
80662eda MD |
692 | /* set slot to provided value */ |
693 | set_slot_value (class, obj, SCM_CAR (get_n_set), slot_value); | |
694 | else | |
695 | { | |
696 | /* set slot to its :init-form if it exists */ | |
697 | tmp = SCM_CADAR (get_n_set); | |
7888309b | 698 | if (scm_is_true (tmp)) |
48ad85fb AW |
699 | set_slot_value (class, |
700 | obj, | |
701 | SCM_CAR (get_n_set), | |
702 | scm_call_0 (tmp)); | |
80662eda MD |
703 | } |
704 | } | |
6d77c894 | 705 | |
80662eda MD |
706 | return obj; |
707 | } | |
398d8ee1 | 708 | #undef FUNC_NAME |
80662eda | 709 | |
21ab2aeb MD |
710 | /* NOTE: The following macros are interdependent with code |
711 | * in goops.scm:compute-getters-n-setters | |
712 | */ | |
713 | #define SCM_GNS_INSTANCE_ALLOCATED_P(gns) \ | |
e11e83f3 | 714 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
d2e53ed6 MV |
715 | || (scm_is_pair (SCM_CDDR (gns)) \ |
716 | && scm_is_pair (SCM_CDDDR (gns)) \ | |
717 | && scm_is_pair (SCM_CDDDDR (gns)))) | |
21ab2aeb | 718 | #define SCM_GNS_INDEX(gns) \ |
e11e83f3 MV |
719 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
720 | ? SCM_I_INUM (SCM_CDDR (gns)) \ | |
721 | : scm_to_long (SCM_CAR (SCM_CDDDDR (gns)))) | |
21ab2aeb | 722 | #define SCM_GNS_SIZE(gns) \ |
e11e83f3 | 723 | (SCM_I_INUMP (SCM_CDDR (gns)) \ |
21ab2aeb | 724 | ? 1 \ |
e11e83f3 | 725 | : scm_to_long (SCM_CADR (SCM_CDDDDR (gns)))) |
80662eda MD |
726 | |
727 | SCM_KEYWORD (k_class, "class"); | |
b46fae00 MD |
728 | SCM_KEYWORD (k_allocation, "allocation"); |
729 | SCM_KEYWORD (k_instance, "instance"); | |
80662eda | 730 | |
398d8ee1 KN |
731 | SCM_DEFINE (scm_sys_prep_layout_x, "%prep-layout!", 1, 0, 0, |
732 | (SCM class), | |
733 | "") | |
734 | #define FUNC_NAME s_scm_sys_prep_layout_x | |
80662eda | 735 | { |
21ab2aeb | 736 | SCM slots, getters_n_setters, nfields; |
6b80d352 DH |
737 | unsigned long int n, i; |
738 | char *s; | |
cc95e00a | 739 | SCM layout; |
80662eda | 740 | |
398d8ee1 | 741 | SCM_VALIDATE_INSTANCE (1, class); |
80662eda | 742 | slots = SCM_SLOT (class, scm_si_slots); |
21ab2aeb | 743 | getters_n_setters = SCM_SLOT (class, scm_si_getters_n_setters); |
80662eda | 744 | nfields = SCM_SLOT (class, scm_si_nfields); |
e11e83f3 | 745 | if (!SCM_I_INUMP (nfields) || SCM_I_INUM (nfields) < 0) |
398d8ee1 | 746 | SCM_MISC_ERROR ("bad value in nfields slot: ~S", |
1afff620 | 747 | scm_list_1 (nfields)); |
e11e83f3 | 748 | n = 2 * SCM_I_INUM (nfields); |
80662eda MD |
749 | if (n < sizeof (SCM_CLASS_CLASS_LAYOUT) - 1 |
750 | && SCM_SUBCLASSP (class, scm_class_class)) | |
398d8ee1 | 751 | SCM_MISC_ERROR ("class object doesn't have enough fields: ~S", |
1afff620 | 752 | scm_list_1 (nfields)); |
6d77c894 | 753 | |
190d4b0d | 754 | layout = scm_i_make_string (n, &s, 0); |
21ab2aeb | 755 | i = 0; |
d2e53ed6 | 756 | while (scm_is_pair (getters_n_setters)) |
80662eda | 757 | { |
21ab2aeb | 758 | if (SCM_GNS_INSTANCE_ALLOCATED_P (SCM_CAR (getters_n_setters))) |
b46fae00 | 759 | { |
21ab2aeb MD |
760 | SCM type; |
761 | int len, index, size; | |
762 | char p, a; | |
763 | ||
d2e53ed6 | 764 | if (i >= n || !scm_is_pair (slots)) |
21ab2aeb MD |
765 | goto inconsistent; |
766 | ||
767 | /* extract slot type */ | |
b46fae00 | 768 | len = scm_ilength (SCM_CDAR (slots)); |
21ab2aeb MD |
769 | type = scm_i_get_keyword (k_class, SCM_CDAR (slots), |
770 | len, SCM_BOOL_F, FUNC_NAME); | |
771 | /* determine slot GC protection and access mode */ | |
7888309b | 772 | if (scm_is_false (type)) |
6b80d352 | 773 | { |
21ab2aeb MD |
774 | p = 'p'; |
775 | a = 'w'; | |
6b80d352 DH |
776 | } |
777 | else | |
778 | { | |
21ab2aeb | 779 | if (!SCM_CLASSP (type)) |
cc95e00a | 780 | SCM_MISC_ERROR ("bad slot class", SCM_EOL); |
21ab2aeb MD |
781 | else if (SCM_SUBCLASSP (type, scm_class_foreign_slot)) |
782 | { | |
783 | if (SCM_SUBCLASSP (type, scm_class_self)) | |
784 | p = 's'; | |
785 | else if (SCM_SUBCLASSP (type, scm_class_protected)) | |
786 | p = 'p'; | |
787 | else | |
788 | p = 'u'; | |
789 | ||
790 | if (SCM_SUBCLASSP (type, scm_class_opaque)) | |
791 | a = 'o'; | |
792 | else if (SCM_SUBCLASSP (type, scm_class_read_only)) | |
793 | a = 'r'; | |
b6cf4d02 AW |
794 | else if (SCM_SUBCLASSP (type, scm_class_hidden)) |
795 | a = 'h'; | |
21ab2aeb MD |
796 | else |
797 | a = 'w'; | |
798 | } | |
799 | else | |
800 | { | |
801 | p = 'p'; | |
802 | a = 'w'; | |
803 | } | |
804 | } | |
805 | ||
806 | index = SCM_GNS_INDEX (SCM_CAR (getters_n_setters)); | |
807 | if (index != (i >> 1)) | |
808 | goto inconsistent; | |
809 | size = SCM_GNS_SIZE (SCM_CAR (getters_n_setters)); | |
810 | while (size) | |
811 | { | |
812 | s[i++] = p; | |
813 | s[i++] = a; | |
814 | --size; | |
6b80d352 | 815 | } |
80662eda | 816 | } |
80662eda | 817 | slots = SCM_CDR (slots); |
21ab2aeb MD |
818 | getters_n_setters = SCM_CDR (getters_n_setters); |
819 | } | |
d2e53ed6 | 820 | if (!scm_is_null (slots)) |
21ab2aeb MD |
821 | { |
822 | inconsistent: | |
21ab2aeb | 823 | SCM_MISC_ERROR ("inconsistent getters-n-setters", SCM_EOL); |
80662eda | 824 | } |
b6cf4d02 | 825 | SCM_SET_VTABLE_LAYOUT (class, scm_string_to_symbol (layout)); |
80662eda MD |
826 | return SCM_UNSPECIFIED; |
827 | } | |
398d8ee1 | 828 | #undef FUNC_NAME |
80662eda MD |
829 | |
830 | static void prep_hashsets (SCM); | |
831 | ||
398d8ee1 KN |
832 | SCM_DEFINE (scm_sys_inherit_magic_x, "%inherit-magic!", 2, 0, 0, |
833 | (SCM class, SCM dsupers), | |
834 | "") | |
835 | #define FUNC_NAME s_scm_sys_inherit_magic_x | |
80662eda | 836 | { |
398d8ee1 | 837 | SCM_VALIDATE_INSTANCE (1, class); |
51f66c91 AW |
838 | scm_i_struct_inherit_vtable_magic (SCM_CLASS_OF (class), class); |
839 | SCM_SET_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_OR_VALID); | |
80662eda MD |
840 | |
841 | prep_hashsets (class); | |
6d77c894 | 842 | |
80662eda MD |
843 | return SCM_UNSPECIFIED; |
844 | } | |
398d8ee1 | 845 | #undef FUNC_NAME |
80662eda | 846 | |
63c1872f | 847 | static void |
80662eda MD |
848 | prep_hashsets (SCM class) |
849 | { | |
dcb410ec | 850 | unsigned int i; |
80662eda | 851 | |
e161c9f8 | 852 | for (i = 0; i < 8; ++i) |
dcb410ec | 853 | SCM_SET_HASHSET (class, i, scm_c_uniform32 (goops_rstate)); |
80662eda MD |
854 | } |
855 | ||
856 | /******************************************************************************/ | |
857 | ||
858 | SCM | |
859 | scm_basic_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
860 | { | |
861 | SCM z, cpl, slots, nfields, g_n_s; | |
862 | ||
863 | /* Allocate one instance */ | |
864 | z = scm_make_struct (class, SCM_INUM0, SCM_EOL); | |
865 | ||
866 | /* Initialize its slots */ | |
dcb410ec | 867 | SCM_SET_SLOT (z, scm_si_direct_supers, dsupers); |
80662eda MD |
868 | cpl = compute_cpl (z); |
869 | slots = build_slots_list (maplist (dslots), cpl); | |
e11e83f3 | 870 | nfields = scm_from_int (scm_ilength (slots)); |
80662eda MD |
871 | g_n_s = compute_getters_n_setters (slots); |
872 | ||
b6cf4d02 | 873 | SCM_SET_SLOT (z, scm_vtable_index_name, name); |
dcb410ec DH |
874 | SCM_SET_SLOT (z, scm_si_direct_slots, dslots); |
875 | SCM_SET_SLOT (z, scm_si_direct_subclasses, SCM_EOL); | |
876 | SCM_SET_SLOT (z, scm_si_direct_methods, SCM_EOL); | |
877 | SCM_SET_SLOT (z, scm_si_cpl, cpl); | |
878 | SCM_SET_SLOT (z, scm_si_slots, slots); | |
879 | SCM_SET_SLOT (z, scm_si_nfields, nfields); | |
880 | SCM_SET_SLOT (z, scm_si_getters_n_setters, g_n_s); | |
881 | SCM_SET_SLOT (z, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
882 | |
883 | /* Add this class in the direct-subclasses slot of dsupers */ | |
884 | { | |
885 | SCM tmp; | |
d2e53ed6 | 886 | for (tmp = dsupers; !scm_is_null (tmp); tmp = SCM_CDR (tmp)) |
dcb410ec DH |
887 | SCM_SET_SLOT (SCM_CAR (tmp), scm_si_direct_subclasses, |
888 | scm_cons (z, SCM_SLOT (SCM_CAR (tmp), | |
889 | scm_si_direct_subclasses))); | |
80662eda MD |
890 | } |
891 | ||
80662eda MD |
892 | return z; |
893 | } | |
894 | ||
895 | SCM | |
896 | scm_basic_make_class (SCM class, SCM name, SCM dsupers, SCM dslots) | |
897 | { | |
898 | SCM z = scm_basic_basic_make_class (class, name, dsupers, dslots); | |
80662eda | 899 | scm_sys_prep_layout_x (z); |
51f66c91 | 900 | scm_sys_inherit_magic_x (z, dsupers); |
80662eda MD |
901 | return z; |
902 | } | |
903 | ||
904 | /******************************************************************************/ | |
905 | ||
6b80d352 | 906 | SCM_SYMBOL (sym_layout, "layout"); |
b6cf4d02 AW |
907 | SCM_SYMBOL (sym_flags, "flags"); |
908 | SCM_SYMBOL (sym_self, "%self"); | |
909 | SCM_SYMBOL (sym_instance_finalizer, "instance-finalizer"); | |
910 | SCM_SYMBOL (sym_reserved_0, "%reserved-0"); | |
911 | SCM_SYMBOL (sym_reserved_1, "%reserved-1"); | |
6b80d352 DH |
912 | SCM_SYMBOL (sym_print, "print"); |
913 | SCM_SYMBOL (sym_procedure, "procedure"); | |
914 | SCM_SYMBOL (sym_setter, "setter"); | |
915 | SCM_SYMBOL (sym_redefined, "redefined"); | |
916 | SCM_SYMBOL (sym_h0, "h0"); | |
917 | SCM_SYMBOL (sym_h1, "h1"); | |
918 | SCM_SYMBOL (sym_h2, "h2"); | |
919 | SCM_SYMBOL (sym_h3, "h3"); | |
920 | SCM_SYMBOL (sym_h4, "h4"); | |
921 | SCM_SYMBOL (sym_h5, "h5"); | |
922 | SCM_SYMBOL (sym_h6, "h6"); | |
923 | SCM_SYMBOL (sym_h7, "h7"); | |
924 | SCM_SYMBOL (sym_name, "name"); | |
925 | SCM_SYMBOL (sym_direct_supers, "direct-supers"); | |
926 | SCM_SYMBOL (sym_direct_slots, "direct-slots"); | |
927 | SCM_SYMBOL (sym_direct_subclasses, "direct-subclasses"); | |
928 | SCM_SYMBOL (sym_direct_methods, "direct-methods"); | |
929 | SCM_SYMBOL (sym_cpl, "cpl"); | |
930 | SCM_SYMBOL (sym_default_slot_definition_class, "default-slot-definition-class"); | |
931 | SCM_SYMBOL (sym_slots, "slots"); | |
932 | SCM_SYMBOL (sym_getters_n_setters, "getters-n-setters"); | |
933 | SCM_SYMBOL (sym_keyword_access, "keyword-access"); | |
934 | SCM_SYMBOL (sym_nfields, "nfields"); | |
6b80d352 DH |
935 | |
936 | ||
80662eda | 937 | static SCM |
13d807b7 | 938 | build_class_class_slots (void) |
80662eda | 939 | { |
b6cf4d02 AW |
940 | /* has to be kept in sync with SCM_VTABLE_BASE_LAYOUT and |
941 | SCM_CLASS_CLASS_LAYOUT */ | |
6b80d352 DH |
942 | return scm_list_n ( |
943 | scm_list_3 (sym_layout, k_class, scm_class_protected_read_only), | |
b6cf4d02 AW |
944 | scm_list_3 (sym_flags, k_class, scm_class_hidden), |
945 | scm_list_3 (sym_self, k_class, scm_class_self), | |
946 | scm_list_3 (sym_instance_finalizer, k_class, scm_class_hidden), | |
6b80d352 | 947 | scm_list_1 (sym_print), |
b6cf4d02 AW |
948 | scm_list_3 (sym_name, k_class, scm_class_protected_hidden), |
949 | scm_list_3 (sym_reserved_0, k_class, scm_class_hidden), | |
950 | scm_list_3 (sym_reserved_1, k_class, scm_class_hidden), | |
6b80d352 DH |
951 | scm_list_1 (sym_redefined), |
952 | scm_list_3 (sym_h0, k_class, scm_class_int), | |
953 | scm_list_3 (sym_h1, k_class, scm_class_int), | |
954 | scm_list_3 (sym_h2, k_class, scm_class_int), | |
955 | scm_list_3 (sym_h3, k_class, scm_class_int), | |
956 | scm_list_3 (sym_h4, k_class, scm_class_int), | |
957 | scm_list_3 (sym_h5, k_class, scm_class_int), | |
958 | scm_list_3 (sym_h6, k_class, scm_class_int), | |
959 | scm_list_3 (sym_h7, k_class, scm_class_int), | |
6b80d352 DH |
960 | scm_list_1 (sym_direct_supers), |
961 | scm_list_1 (sym_direct_slots), | |
962 | scm_list_1 (sym_direct_subclasses), | |
963 | scm_list_1 (sym_direct_methods), | |
964 | scm_list_1 (sym_cpl), | |
965 | scm_list_1 (sym_default_slot_definition_class), | |
966 | scm_list_1 (sym_slots), | |
967 | scm_list_1 (sym_getters_n_setters), | |
968 | scm_list_1 (sym_keyword_access), | |
969 | scm_list_1 (sym_nfields), | |
6b80d352 | 970 | SCM_UNDEFINED); |
80662eda MD |
971 | } |
972 | ||
973 | static void | |
974 | create_basic_classes (void) | |
975 | { | |
976 | /* SCM slots_of_class = build_class_class_slots (); */ | |
977 | ||
b6cf4d02 AW |
978 | /**** <class> ****/ |
979 | SCM cs = scm_from_locale_string (SCM_CLASS_CLASS_LAYOUT); | |
4a655e50 | 980 | SCM name = scm_from_latin1_symbol ("<class>"); |
6d46f1e4 | 981 | scm_class_class = scm_i_make_vtable_vtable (cs); |
80662eda MD |
982 | SCM_SET_CLASS_FLAGS (scm_class_class, (SCM_CLASSF_GOOPS_OR_VALID |
983 | | SCM_CLASSF_METACLASS)); | |
984 | ||
b6cf4d02 | 985 | SCM_SET_SLOT (scm_class_class, scm_vtable_index_name, name); |
dcb410ec DH |
986 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, SCM_EOL); /* will be changed */ |
987 | /* SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots_of_class); */ | |
988 | SCM_SET_SLOT (scm_class_class, scm_si_direct_subclasses, SCM_EOL); | |
6d77c894 | 989 | SCM_SET_SLOT (scm_class_class, scm_si_direct_methods, SCM_EOL); |
dcb410ec DH |
990 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, SCM_EOL); /* will be changed */ |
991 | /* SCM_SET_SLOT (scm_class_class, scm_si_slots, slots_of_class); */ | |
e11e83f3 | 992 | SCM_SET_SLOT (scm_class_class, scm_si_nfields, scm_from_int (SCM_N_CLASS_SLOTS)); |
dcb410ec DH |
993 | /* SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, |
994 | compute_getters_n_setters (slots_of_class)); */ | |
995 | SCM_SET_SLOT (scm_class_class, scm_si_redefined, SCM_BOOL_F); | |
80662eda MD |
996 | |
997 | prep_hashsets (scm_class_class); | |
998 | ||
999 | DEFVAR(name, scm_class_class); | |
1000 | ||
51f66c91 | 1001 | /**** <top> ****/ |
4a655e50 | 1002 | name = scm_from_latin1_symbol ("<top>"); |
f39448c5 AW |
1003 | scm_class_top = scm_basic_make_class (scm_class_class, name, |
1004 | SCM_EOL, SCM_EOL); | |
80662eda MD |
1005 | |
1006 | DEFVAR(name, scm_class_top); | |
6d77c894 | 1007 | |
51f66c91 | 1008 | /**** <object> ****/ |
4a655e50 | 1009 | name = scm_from_latin1_symbol ("<object>"); |
f39448c5 AW |
1010 | scm_class_object = scm_basic_make_class (scm_class_class, name, |
1011 | scm_list_1 (scm_class_top), SCM_EOL); | |
80662eda MD |
1012 | |
1013 | DEFVAR (name, scm_class_object); | |
1014 | ||
1015 | /* <top> <object> and <class> were partially initialized. Correct them here */ | |
1afff620 | 1016 | SCM_SET_SLOT (scm_class_object, scm_si_direct_subclasses, scm_list_1 (scm_class_class)); |
80662eda | 1017 | |
1afff620 KN |
1018 | SCM_SET_SLOT (scm_class_class, scm_si_direct_supers, scm_list_1 (scm_class_object)); |
1019 | SCM_SET_SLOT (scm_class_class, scm_si_cpl, scm_list_3 (scm_class_class, scm_class_object, scm_class_top)); | |
80662eda MD |
1020 | } |
1021 | ||
1022 | /******************************************************************************/ | |
1023 | ||
398d8ee1 KN |
1024 | SCM_DEFINE (scm_instance_p, "instance?", 1, 0, 0, |
1025 | (SCM obj), | |
6bcefd15 | 1026 | "Return @code{#t} if @var{obj} is an instance.") |
398d8ee1 | 1027 | #define FUNC_NAME s_scm_instance_p |
80662eda | 1028 | { |
7888309b | 1029 | return scm_from_bool (SCM_INSTANCEP (obj)); |
80662eda | 1030 | } |
398d8ee1 | 1031 | #undef FUNC_NAME |
80662eda | 1032 | |
80662eda MD |
1033 | |
1034 | /****************************************************************************** | |
6d77c894 | 1035 | * |
80662eda MD |
1036 | * Meta object accessors |
1037 | * | |
1038 | ******************************************************************************/ | |
398d8ee1 KN |
1039 | SCM_DEFINE (scm_class_name, "class-name", 1, 0, 0, |
1040 | (SCM obj), | |
6bcefd15 | 1041 | "Return the class name of @var{obj}.") |
398d8ee1 | 1042 | #define FUNC_NAME s_scm_class_name |
80662eda | 1043 | { |
398d8ee1 | 1044 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1045 | return scm_slot_ref (obj, sym_name); |
80662eda | 1046 | } |
398d8ee1 | 1047 | #undef FUNC_NAME |
80662eda | 1048 | |
398d8ee1 KN |
1049 | SCM_DEFINE (scm_class_direct_supers, "class-direct-supers", 1, 0, 0, |
1050 | (SCM obj), | |
6bcefd15 | 1051 | "Return the direct superclasses of the class @var{obj}.") |
398d8ee1 | 1052 | #define FUNC_NAME s_scm_class_direct_supers |
80662eda | 1053 | { |
398d8ee1 | 1054 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1055 | return scm_slot_ref (obj, sym_direct_supers); |
80662eda | 1056 | } |
398d8ee1 | 1057 | #undef FUNC_NAME |
80662eda | 1058 | |
398d8ee1 KN |
1059 | SCM_DEFINE (scm_class_direct_slots, "class-direct-slots", 1, 0, 0, |
1060 | (SCM obj), | |
6bcefd15 | 1061 | "Return the direct slots of the class @var{obj}.") |
398d8ee1 | 1062 | #define FUNC_NAME s_scm_class_direct_slots |
80662eda | 1063 | { |
398d8ee1 | 1064 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1065 | return scm_slot_ref (obj, sym_direct_slots); |
80662eda | 1066 | } |
398d8ee1 | 1067 | #undef FUNC_NAME |
80662eda | 1068 | |
398d8ee1 KN |
1069 | SCM_DEFINE (scm_class_direct_subclasses, "class-direct-subclasses", 1, 0, 0, |
1070 | (SCM obj), | |
6bcefd15 | 1071 | "Return the direct subclasses of the class @var{obj}.") |
398d8ee1 | 1072 | #define FUNC_NAME s_scm_class_direct_subclasses |
80662eda | 1073 | { |
398d8ee1 | 1074 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1075 | return scm_slot_ref(obj, sym_direct_subclasses); |
80662eda | 1076 | } |
398d8ee1 | 1077 | #undef FUNC_NAME |
80662eda | 1078 | |
398d8ee1 KN |
1079 | SCM_DEFINE (scm_class_direct_methods, "class-direct-methods", 1, 0, 0, |
1080 | (SCM obj), | |
6bcefd15 | 1081 | "Return the direct methods of the class @var{obj}") |
398d8ee1 | 1082 | #define FUNC_NAME s_scm_class_direct_methods |
80662eda | 1083 | { |
398d8ee1 | 1084 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1085 | return scm_slot_ref (obj, sym_direct_methods); |
80662eda | 1086 | } |
398d8ee1 | 1087 | #undef FUNC_NAME |
80662eda | 1088 | |
398d8ee1 KN |
1089 | SCM_DEFINE (scm_class_precedence_list, "class-precedence-list", 1, 0, 0, |
1090 | (SCM obj), | |
6bcefd15 | 1091 | "Return the class precedence list of the class @var{obj}.") |
398d8ee1 | 1092 | #define FUNC_NAME s_scm_class_precedence_list |
80662eda | 1093 | { |
398d8ee1 | 1094 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1095 | return scm_slot_ref (obj, sym_cpl); |
80662eda | 1096 | } |
398d8ee1 | 1097 | #undef FUNC_NAME |
80662eda | 1098 | |
398d8ee1 KN |
1099 | SCM_DEFINE (scm_class_slots, "class-slots", 1, 0, 0, |
1100 | (SCM obj), | |
6bcefd15 | 1101 | "Return the slot list of the class @var{obj}.") |
398d8ee1 | 1102 | #define FUNC_NAME s_scm_class_slots |
80662eda | 1103 | { |
398d8ee1 | 1104 | SCM_VALIDATE_CLASS (1, obj); |
6b80d352 | 1105 | return scm_slot_ref (obj, sym_slots); |
80662eda | 1106 | } |
398d8ee1 | 1107 | #undef FUNC_NAME |
80662eda | 1108 | |
398d8ee1 KN |
1109 | SCM_DEFINE (scm_generic_function_name, "generic-function-name", 1, 0, 0, |
1110 | (SCM obj), | |
6bcefd15 | 1111 | "Return the name of the generic function @var{obj}.") |
398d8ee1 | 1112 | #define FUNC_NAME s_scm_generic_function_name |
80662eda | 1113 | { |
398d8ee1 | 1114 | SCM_VALIDATE_GENERIC (1, obj); |
80662eda MD |
1115 | return scm_procedure_property (obj, scm_sym_name); |
1116 | } | |
398d8ee1 | 1117 | #undef FUNC_NAME |
80662eda | 1118 | |
bbf8d523 MD |
1119 | SCM_SYMBOL (sym_methods, "methods"); |
1120 | SCM_SYMBOL (sym_extended_by, "extended-by"); | |
1121 | SCM_SYMBOL (sym_extends, "extends"); | |
1122 | ||
1123 | static | |
1124 | SCM fold_downward_gf_methods (SCM method_lists, SCM gf) | |
1125 | { | |
1126 | SCM gfs = scm_slot_ref (gf, sym_extended_by); | |
1127 | method_lists = scm_cons (scm_slot_ref (gf, sym_methods), method_lists); | |
d2e53ed6 | 1128 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1129 | { |
1130 | method_lists = fold_downward_gf_methods (method_lists, SCM_CAR (gfs)); | |
1131 | gfs = SCM_CDR (gfs); | |
1132 | } | |
1133 | return method_lists; | |
1134 | } | |
1135 | ||
1136 | static | |
1137 | SCM fold_upward_gf_methods (SCM method_lists, SCM gf) | |
1138 | { | |
1139 | if (SCM_IS_A_P (gf, scm_class_extended_generic)) | |
1140 | { | |
1141 | SCM gfs = scm_slot_ref (gf, sym_extends); | |
d2e53ed6 | 1142 | while (!scm_is_null (gfs)) |
bbf8d523 MD |
1143 | { |
1144 | SCM methods = scm_slot_ref (SCM_CAR (gfs), sym_methods); | |
1145 | method_lists = fold_upward_gf_methods (scm_cons (methods, | |
1146 | method_lists), | |
1147 | SCM_CAR (gfs)); | |
1148 | gfs = SCM_CDR (gfs); | |
1149 | } | |
1150 | } | |
1151 | return method_lists; | |
1152 | } | |
1153 | ||
398d8ee1 KN |
1154 | SCM_DEFINE (scm_generic_function_methods, "generic-function-methods", 1, 0, 0, |
1155 | (SCM obj), | |
6bcefd15 | 1156 | "Return the methods of the generic function @var{obj}.") |
398d8ee1 | 1157 | #define FUNC_NAME s_scm_generic_function_methods |
80662eda | 1158 | { |
bbf8d523 | 1159 | SCM methods; |
398d8ee1 | 1160 | SCM_VALIDATE_GENERIC (1, obj); |
bbf8d523 MD |
1161 | methods = fold_upward_gf_methods (SCM_EOL, obj); |
1162 | methods = fold_downward_gf_methods (methods, obj); | |
1163 | return scm_append (methods); | |
80662eda | 1164 | } |
398d8ee1 | 1165 | #undef FUNC_NAME |
80662eda | 1166 | |
398d8ee1 KN |
1167 | SCM_DEFINE (scm_method_generic_function, "method-generic-function", 1, 0, 0, |
1168 | (SCM obj), | |
bb2c02f2 | 1169 | "Return the generic function for the method @var{obj}.") |
398d8ee1 | 1170 | #define FUNC_NAME s_scm_method_generic_function |
80662eda | 1171 | { |
398d8ee1 | 1172 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1173 | return scm_slot_ref (obj, scm_from_latin1_symbol ("generic-function")); |
80662eda | 1174 | } |
398d8ee1 | 1175 | #undef FUNC_NAME |
80662eda | 1176 | |
398d8ee1 KN |
1177 | SCM_DEFINE (scm_method_specializers, "method-specializers", 1, 0, 0, |
1178 | (SCM obj), | |
6bcefd15 | 1179 | "Return specializers of the method @var{obj}.") |
398d8ee1 | 1180 | #define FUNC_NAME s_scm_method_specializers |
80662eda | 1181 | { |
398d8ee1 | 1182 | SCM_VALIDATE_METHOD (1, obj); |
4a655e50 | 1183 | return scm_slot_ref (obj, scm_from_latin1_symbol ("specializers")); |
80662eda | 1184 | } |
398d8ee1 | 1185 | #undef FUNC_NAME |
80662eda | 1186 | |
398d8ee1 KN |
1187 | SCM_DEFINE (scm_method_procedure, "method-procedure", 1, 0, 0, |
1188 | (SCM obj), | |
6bcefd15 | 1189 | "Return the procedure of the method @var{obj}.") |
398d8ee1 | 1190 | #define FUNC_NAME s_scm_method_procedure |
80662eda | 1191 | { |
398d8ee1 | 1192 | SCM_VALIDATE_METHOD (1, obj); |
6b80d352 | 1193 | return scm_slot_ref (obj, sym_procedure); |
80662eda | 1194 | } |
398d8ee1 | 1195 | #undef FUNC_NAME |
80662eda | 1196 | |
80662eda MD |
1197 | /****************************************************************************** |
1198 | * | |
1199 | * S l o t a c c e s s | |
1200 | * | |
1201 | ******************************************************************************/ | |
1202 | ||
398d8ee1 KN |
1203 | SCM_DEFINE (scm_make_unbound, "make-unbound", 0, 0, 0, |
1204 | (), | |
6bcefd15 | 1205 | "Return the unbound value.") |
398d8ee1 | 1206 | #define FUNC_NAME s_scm_make_unbound |
80662eda MD |
1207 | { |
1208 | return SCM_GOOPS_UNBOUND; | |
1209 | } | |
398d8ee1 | 1210 | #undef FUNC_NAME |
80662eda | 1211 | |
398d8ee1 KN |
1212 | SCM_DEFINE (scm_unbound_p, "unbound?", 1, 0, 0, |
1213 | (SCM obj), | |
6bcefd15 | 1214 | "Return @code{#t} if @var{obj} is unbound.") |
398d8ee1 | 1215 | #define FUNC_NAME s_scm_unbound_p |
80662eda MD |
1216 | { |
1217 | return SCM_GOOPS_UNBOUNDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
1218 | } | |
398d8ee1 | 1219 | #undef FUNC_NAME |
80662eda | 1220 | |
398d8ee1 KN |
1221 | SCM_DEFINE (scm_assert_bound, "assert-bound", 2, 0, 0, |
1222 | (SCM value, SCM obj), | |
6bcefd15 MG |
1223 | "Return @var{value} if it is bound, and invoke the\n" |
1224 | "@var{slot-unbound} method of @var{obj} if it is not.") | |
398d8ee1 | 1225 | #define FUNC_NAME s_scm_assert_bound |
80662eda MD |
1226 | { |
1227 | if (SCM_GOOPS_UNBOUNDP (value)) | |
bef95911 | 1228 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1229 | return value; |
1230 | } | |
398d8ee1 | 1231 | #undef FUNC_NAME |
80662eda | 1232 | |
398d8ee1 KN |
1233 | SCM_DEFINE (scm_at_assert_bound_ref, "@assert-bound-ref", 2, 0, 0, |
1234 | (SCM obj, SCM index), | |
6bcefd15 MG |
1235 | "Like @code{assert-bound}, but use @var{index} for accessing\n" |
1236 | "the value from @var{obj}.") | |
398d8ee1 | 1237 | #define FUNC_NAME s_scm_at_assert_bound_ref |
80662eda | 1238 | { |
e11e83f3 | 1239 | SCM value = SCM_SLOT (obj, scm_to_int (index)); |
80662eda | 1240 | if (SCM_GOOPS_UNBOUNDP (value)) |
bef95911 | 1241 | return scm_call_1 (SCM_VARIABLE_REF (var_slot_unbound), obj); |
80662eda MD |
1242 | return value; |
1243 | } | |
398d8ee1 | 1244 | #undef FUNC_NAME |
80662eda | 1245 | |
398d8ee1 KN |
1246 | SCM_DEFINE (scm_sys_fast_slot_ref, "%fast-slot-ref", 2, 0, 0, |
1247 | (SCM obj, SCM index), | |
6bcefd15 | 1248 | "Return the slot value with index @var{index} from @var{obj}.") |
398d8ee1 | 1249 | #define FUNC_NAME s_scm_sys_fast_slot_ref |
80662eda | 1250 | { |
e25f3727 | 1251 | scm_t_bits i; |
80662eda | 1252 | |
398d8ee1 | 1253 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1254 | i = scm_to_unsigned_integer (index, 0, |
1255 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1256 | scm_si_nfields)) | |
1257 | - 1); | |
58241edc | 1258 | return SCM_SLOT (obj, i); |
80662eda | 1259 | } |
ca83b028 DH |
1260 | #undef FUNC_NAME |
1261 | ||
398d8ee1 KN |
1262 | SCM_DEFINE (scm_sys_fast_slot_set_x, "%fast-slot-set!", 3, 0, 0, |
1263 | (SCM obj, SCM index, SCM value), | |
6bcefd15 MG |
1264 | "Set the slot with index @var{index} in @var{obj} to\n" |
1265 | "@var{value}.") | |
398d8ee1 | 1266 | #define FUNC_NAME s_scm_sys_fast_slot_set_x |
80662eda | 1267 | { |
e25f3727 | 1268 | scm_t_bits i; |
80662eda | 1269 | |
398d8ee1 | 1270 | SCM_VALIDATE_INSTANCE (1, obj); |
a9931e4e NJ |
1271 | i = scm_to_unsigned_integer (index, 0, |
1272 | SCM_I_INUM (SCM_SLOT (SCM_CLASS_OF (obj), | |
1273 | scm_si_nfields)) | |
1274 | - 1); | |
6b80d352 | 1275 | |
dcb410ec | 1276 | SCM_SET_SLOT (obj, i, value); |
ca83b028 | 1277 | |
80662eda MD |
1278 | return SCM_UNSPECIFIED; |
1279 | } | |
ca83b028 DH |
1280 | #undef FUNC_NAME |
1281 | ||
80662eda | 1282 | |
4d0949ea | 1283 | \f |
80662eda MD |
1284 | /** Utilities **/ |
1285 | ||
1286 | /* In the future, this function will return the effective slot | |
1287 | * definition associated with SLOT_NAME. Now it just returns some of | |
1288 | * the information which will be stored in the effective slot | |
1289 | * definition. | |
1290 | */ | |
1291 | ||
1292 | static SCM | |
1293 | slot_definition_using_name (SCM class, SCM slot_name) | |
1294 | { | |
1295 | register SCM slots = SCM_SLOT (class, scm_si_getters_n_setters); | |
d2e53ed6 | 1296 | for (; !scm_is_null (slots); slots = SCM_CDR (slots)) |
d223c3fc | 1297 | if (scm_is_eq (SCM_CAAR (slots), slot_name)) |
80662eda MD |
1298 | return SCM_CAR (slots); |
1299 | return SCM_BOOL_F; | |
1300 | } | |
1301 | ||
1302 | static SCM | |
e81d98ec | 1303 | get_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef) |
54ee7cdf | 1304 | #define FUNC_NAME "%get-slot-value" |
80662eda MD |
1305 | { |
1306 | SCM access = SCM_CDDR (slotdef); | |
1307 | /* Two cases here: | |
1308 | * - access is an integer (the offset of this slot in the slots vector) | |
1309 | * - otherwise (car access) is the getter function to apply | |
e11e83f3 MV |
1310 | * |
1311 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1312 | * we can just assume fixnums here. | |
23437298 | 1313 | */ |
e11e83f3 | 1314 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1315 | /* Don't poke at the slots directly, because scm_struct_ref handles the |
1316 | access bits for us. */ | |
1317 | return scm_struct_ref (obj, access); | |
80662eda | 1318 | else |
9d019f9b | 1319 | return scm_call_1 (SCM_CAR (access), obj); |
80662eda | 1320 | } |
54ee7cdf | 1321 | #undef FUNC_NAME |
80662eda MD |
1322 | |
1323 | static SCM | |
1324 | get_slot_value_using_name (SCM class, SCM obj, SCM slot_name) | |
1325 | { | |
1326 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1327 | if (scm_is_true (slotdef)) |
80662eda MD |
1328 | return get_slot_value (class, obj, slotdef); |
1329 | else | |
bef95911 | 1330 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name); |
80662eda MD |
1331 | } |
1332 | ||
1333 | static SCM | |
e81d98ec | 1334 | set_slot_value (SCM class SCM_UNUSED, SCM obj, SCM slotdef, SCM value) |
54ee7cdf | 1335 | #define FUNC_NAME "%set-slot-value" |
80662eda MD |
1336 | { |
1337 | SCM access = SCM_CDDR (slotdef); | |
1338 | /* Two cases here: | |
1339 | * - access is an integer (the offset of this slot in the slots vector) | |
1340 | * - otherwise (cadr access) is the setter function to apply | |
e11e83f3 MV |
1341 | * |
1342 | * Instances have never more than SCM_MOST_POSITIVE_FIXNUM slots, so | |
1343 | * we can just assume fixnums here. | |
80662eda | 1344 | */ |
e11e83f3 | 1345 | if (SCM_I_INUMP (access)) |
54ee7cdf AW |
1346 | /* obey permissions bits via going through struct-set! */ |
1347 | scm_struct_set_x (obj, access, value); | |
80662eda | 1348 | else |
9d019f9b AW |
1349 | /* ((cadr l) obj value) */ |
1350 | scm_call_2 (SCM_CADR (access), obj, value); | |
80662eda MD |
1351 | return SCM_UNSPECIFIED; |
1352 | } | |
54ee7cdf | 1353 | #undef FUNC_NAME |
80662eda MD |
1354 | |
1355 | static SCM | |
1356 | set_slot_value_using_name (SCM class, SCM obj, SCM slot_name, SCM value) | |
1357 | { | |
1358 | SCM slotdef = slot_definition_using_name (class, slot_name); | |
7888309b | 1359 | if (scm_is_true (slotdef)) |
80662eda MD |
1360 | return set_slot_value (class, obj, slotdef, value); |
1361 | else | |
bef95911 | 1362 | return scm_call_4 (SCM_VARIABLE_REF (var_slot_missing), class, obj, slot_name, value); |
80662eda MD |
1363 | } |
1364 | ||
1365 | static SCM | |
e81d98ec | 1366 | test_slot_existence (SCM class SCM_UNUSED, SCM obj, SCM slot_name) |
80662eda MD |
1367 | { |
1368 | register SCM l; | |
1369 | ||
d2e53ed6 | 1370 | for (l = SCM_ACCESSORS_OF (obj); !scm_is_null (l); l = SCM_CDR (l)) |
bc36d050 | 1371 | if (scm_is_eq (SCM_CAAR (l), slot_name)) |
80662eda MD |
1372 | return SCM_BOOL_T; |
1373 | ||
1374 | return SCM_BOOL_F; | |
1375 | } | |
1376 | ||
80662eda MD |
1377 | /* ======================================== */ |
1378 | ||
23437298 DH |
1379 | SCM_DEFINE (scm_slot_ref_using_class, "slot-ref-using-class", 3, 0, 0, |
1380 | (SCM class, SCM obj, SCM slot_name), | |
1381 | "") | |
1382 | #define FUNC_NAME s_scm_slot_ref_using_class | |
80662eda MD |
1383 | { |
1384 | SCM res; | |
1385 | ||
398d8ee1 KN |
1386 | SCM_VALIDATE_CLASS (1, class); |
1387 | SCM_VALIDATE_INSTANCE (2, obj); | |
1388 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1389 | |
1390 | res = get_slot_value_using_name (class, obj, slot_name); | |
1391 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1392 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1393 | return res; |
1394 | } | |
23437298 | 1395 | #undef FUNC_NAME |
80662eda | 1396 | |
23437298 DH |
1397 | |
1398 | SCM_DEFINE (scm_slot_set_using_class_x, "slot-set-using-class!", 4, 0, 0, | |
1399 | (SCM class, SCM obj, SCM slot_name, SCM value), | |
1400 | "") | |
1401 | #define FUNC_NAME s_scm_slot_set_using_class_x | |
80662eda | 1402 | { |
398d8ee1 KN |
1403 | SCM_VALIDATE_CLASS (1, class); |
1404 | SCM_VALIDATE_INSTANCE (2, obj); | |
1405 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
23437298 | 1406 | |
80662eda MD |
1407 | return set_slot_value_using_name (class, obj, slot_name, value); |
1408 | } | |
23437298 DH |
1409 | #undef FUNC_NAME |
1410 | ||
80662eda | 1411 | |
398d8ee1 KN |
1412 | SCM_DEFINE (scm_slot_bound_using_class_p, "slot-bound-using-class?", 3, 0, 0, |
1413 | (SCM class, SCM obj, SCM slot_name), | |
1414 | "") | |
1415 | #define FUNC_NAME s_scm_slot_bound_using_class_p | |
80662eda | 1416 | { |
398d8ee1 KN |
1417 | SCM_VALIDATE_CLASS (1, class); |
1418 | SCM_VALIDATE_INSTANCE (2, obj); | |
1419 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1420 | |
1421 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, obj, slot_name)) | |
1422 | ? SCM_BOOL_F | |
1423 | : SCM_BOOL_T); | |
1424 | } | |
398d8ee1 | 1425 | #undef FUNC_NAME |
80662eda | 1426 | |
398d8ee1 KN |
1427 | SCM_DEFINE (scm_slot_exists_using_class_p, "slot-exists-using-class?", 3, 0, 0, |
1428 | (SCM class, SCM obj, SCM slot_name), | |
1429 | "") | |
1430 | #define FUNC_NAME s_scm_slot_exists_using_class_p | |
1431 | { | |
1432 | SCM_VALIDATE_CLASS (1, class); | |
1433 | SCM_VALIDATE_INSTANCE (2, obj); | |
1434 | SCM_VALIDATE_SYMBOL (3, slot_name); | |
80662eda MD |
1435 | return test_slot_existence (class, obj, slot_name); |
1436 | } | |
398d8ee1 | 1437 | #undef FUNC_NAME |
80662eda MD |
1438 | |
1439 | ||
1440 | /* ======================================== */ | |
1441 | ||
398d8ee1 KN |
1442 | SCM_DEFINE (scm_slot_ref, "slot-ref", 2, 0, 0, |
1443 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1444 | "Return the value from @var{obj}'s slot with the name\n" |
1445 | "@var{slot_name}.") | |
398d8ee1 | 1446 | #define FUNC_NAME s_scm_slot_ref |
80662eda MD |
1447 | { |
1448 | SCM res, class; | |
1449 | ||
398d8ee1 | 1450 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1451 | TEST_CHANGE_CLASS (obj, class); |
1452 | ||
1453 | res = get_slot_value_using_name (class, obj, slot_name); | |
1454 | if (SCM_GOOPS_UNBOUNDP (res)) | |
bef95911 | 1455 | return scm_call_3 (SCM_VARIABLE_REF (var_slot_unbound), class, obj, slot_name); |
80662eda MD |
1456 | return res; |
1457 | } | |
398d8ee1 | 1458 | #undef FUNC_NAME |
80662eda | 1459 | |
398d8ee1 KN |
1460 | SCM_DEFINE (scm_slot_set_x, "slot-set!", 3, 0, 0, |
1461 | (SCM obj, SCM slot_name, SCM value), | |
6bcefd15 | 1462 | "Set the slot named @var{slot_name} of @var{obj} to @var{value}.") |
398d8ee1 | 1463 | #define FUNC_NAME s_scm_slot_set_x |
80662eda MD |
1464 | { |
1465 | SCM class; | |
1466 | ||
398d8ee1 | 1467 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1468 | TEST_CHANGE_CLASS(obj, class); |
1469 | ||
1470 | return set_slot_value_using_name (class, obj, slot_name, value); | |
1471 | } | |
398d8ee1 | 1472 | #undef FUNC_NAME |
80662eda | 1473 | |
398d8ee1 | 1474 | const char *scm_s_slot_set_x = s_scm_slot_set_x; |
80662eda | 1475 | |
398d8ee1 KN |
1476 | SCM_DEFINE (scm_slot_bound_p, "slot-bound?", 2, 0, 0, |
1477 | (SCM obj, SCM slot_name), | |
6bcefd15 MG |
1478 | "Return @code{#t} if the slot named @var{slot_name} of @var{obj}\n" |
1479 | "is bound.") | |
398d8ee1 | 1480 | #define FUNC_NAME s_scm_slot_bound_p |
80662eda MD |
1481 | { |
1482 | SCM class; | |
1483 | ||
398d8ee1 | 1484 | SCM_VALIDATE_INSTANCE (1, obj); |
80662eda MD |
1485 | TEST_CHANGE_CLASS(obj, class); |
1486 | ||
1487 | return (SCM_GOOPS_UNBOUNDP (get_slot_value_using_name (class, | |
1488 | obj, | |
1489 | slot_name)) | |
1490 | ? SCM_BOOL_F | |
1491 | : SCM_BOOL_T); | |
1492 | } | |
398d8ee1 | 1493 | #undef FUNC_NAME |
80662eda | 1494 | |
6d77c894 | 1495 | SCM_DEFINE (scm_slot_exists_p, "slot-exists?", 2, 0, 0, |
398d8ee1 | 1496 | (SCM obj, SCM slot_name), |
6bcefd15 | 1497 | "Return @code{#t} if @var{obj} has a slot named @var{slot_name}.") |
6d77c894 | 1498 | #define FUNC_NAME s_scm_slot_exists_p |
80662eda MD |
1499 | { |
1500 | SCM class; | |
1501 | ||
398d8ee1 KN |
1502 | SCM_VALIDATE_INSTANCE (1, obj); |
1503 | SCM_VALIDATE_SYMBOL (2, slot_name); | |
80662eda MD |
1504 | TEST_CHANGE_CLASS (obj, class); |
1505 | ||
1506 | return test_slot_existence (class, obj, slot_name); | |
1507 | } | |
398d8ee1 | 1508 | #undef FUNC_NAME |
80662eda MD |
1509 | |
1510 | ||
1511 | /****************************************************************************** | |
1512 | * | |
1513 | * %allocate-instance (the low level instance allocation primitive) | |
1514 | * | |
1515 | ******************************************************************************/ | |
1516 | ||
1517 | static void clear_method_cache (SCM); | |
1518 | ||
398d8ee1 KN |
1519 | SCM_DEFINE (scm_sys_allocate_instance, "%allocate-instance", 2, 0, 0, |
1520 | (SCM class, SCM initargs), | |
6bcefd15 MG |
1521 | "Create a new instance of class @var{class} and initialize it\n" |
1522 | "from the arguments @var{initargs}.") | |
398d8ee1 | 1523 | #define FUNC_NAME s_scm_sys_allocate_instance |
80662eda | 1524 | { |
b6cf4d02 | 1525 | SCM obj; |
e25f3727 | 1526 | scm_t_signed_bits n, i; |
b6cf4d02 | 1527 | SCM layout; |
80662eda | 1528 | |
398d8ee1 | 1529 | SCM_VALIDATE_CLASS (1, class); |
80662eda | 1530 | |
b6cf4d02 | 1531 | /* FIXME: duplicates some of scm_make_struct. */ |
80662eda | 1532 | |
e11e83f3 | 1533 | n = SCM_I_INUM (SCM_SLOT (class, scm_si_nfields)); |
96a44c1c | 1534 | obj = scm_i_alloc_struct (SCM_STRUCT_DATA (class), n); |
6d77c894 | 1535 | |
b6cf4d02 AW |
1536 | layout = SCM_VTABLE_LAYOUT (class); |
1537 | ||
1538 | /* Set all SCM-holding slots to unbound */ | |
1539 | for (i = 0; i < n; i++) | |
71fc6438 AW |
1540 | { |
1541 | scm_t_wchar c = scm_i_symbol_ref (layout, i*2); | |
b6cf4d02 AW |
1542 | if (c == 'p') |
1543 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (SCM_GOOPS_UNBOUND); | |
1544 | else if (c == 's') | |
1545 | SCM_STRUCT_DATA (obj)[i] = SCM_UNPACK (obj); | |
1546 | else | |
1547 | SCM_STRUCT_DATA (obj)[i] = 0; | |
80662eda | 1548 | } |
6d77c894 | 1549 | |
b6cf4d02 AW |
1550 | if (SCM_CLASS_FLAGS (class) & SCM_CLASSF_PURE_GENERIC) |
1551 | clear_method_cache (obj); | |
80662eda | 1552 | |
b6cf4d02 | 1553 | return obj; |
80662eda | 1554 | } |
398d8ee1 | 1555 | #undef FUNC_NAME |
80662eda | 1556 | |
398d8ee1 KN |
1557 | SCM_DEFINE (scm_sys_set_object_setter_x, "%set-object-setter!", 2, 0, 0, |
1558 | (SCM obj, SCM setter), | |
1559 | "") | |
1560 | #define FUNC_NAME s_scm_sys_set_object_setter_x | |
80662eda | 1561 | { |
11561496 AW |
1562 | SCM_ASSERT (SCM_STRUCTP (obj) |
1563 | && (SCM_OBJ_CLASS_FLAGS (obj) & SCM_CLASSF_PURE_GENERIC), | |
80662eda MD |
1564 | obj, |
1565 | SCM_ARG1, | |
398d8ee1 | 1566 | FUNC_NAME); |
11561496 | 1567 | SCM_SET_GENERIC_SETTER (obj, setter); |
80662eda MD |
1568 | return SCM_UNSPECIFIED; |
1569 | } | |
398d8ee1 | 1570 | #undef FUNC_NAME |
80662eda MD |
1571 | |
1572 | /****************************************************************************** | |
1573 | * | |
1574 | * %modify-instance (used by change-class to modify in place) | |
6d77c894 | 1575 | * |
80662eda MD |
1576 | ******************************************************************************/ |
1577 | ||
398d8ee1 KN |
1578 | SCM_DEFINE (scm_sys_modify_instance, "%modify-instance", 2, 0, 0, |
1579 | (SCM old, SCM new), | |
1580 | "") | |
1581 | #define FUNC_NAME s_scm_sys_modify_instance | |
80662eda | 1582 | { |
398d8ee1 KN |
1583 | SCM_VALIDATE_INSTANCE (1, old); |
1584 | SCM_VALIDATE_INSTANCE (2, new); | |
80662eda | 1585 | |
6d77c894 | 1586 | /* Exchange the data contained in old and new. We exchange rather than |
80662eda MD |
1587 | * scratch the old value with new to be correct with GC. |
1588 | * See "Class redefinition protocol above". | |
1589 | */ | |
9de87eea | 1590 | SCM_CRITICAL_SECTION_START; |
80662eda | 1591 | { |
32b12f40 KR |
1592 | scm_t_bits word0, word1; |
1593 | word0 = SCM_CELL_WORD_0 (old); | |
1594 | word1 = SCM_CELL_WORD_1 (old); | |
1595 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1596 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
1597 | SCM_SET_CELL_WORD_0 (new, word0); | |
1598 | SCM_SET_CELL_WORD_1 (new, word1); | |
80662eda | 1599 | } |
9de87eea | 1600 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1601 | return SCM_UNSPECIFIED; |
1602 | } | |
398d8ee1 | 1603 | #undef FUNC_NAME |
80662eda | 1604 | |
398d8ee1 KN |
1605 | SCM_DEFINE (scm_sys_modify_class, "%modify-class", 2, 0, 0, |
1606 | (SCM old, SCM new), | |
1607 | "") | |
1608 | #define FUNC_NAME s_scm_sys_modify_class | |
80662eda | 1609 | { |
398d8ee1 KN |
1610 | SCM_VALIDATE_CLASS (1, old); |
1611 | SCM_VALIDATE_CLASS (2, new); | |
80662eda | 1612 | |
9de87eea | 1613 | SCM_CRITICAL_SECTION_START; |
80662eda | 1614 | { |
32b12f40 KR |
1615 | scm_t_bits word0, word1; |
1616 | word0 = SCM_CELL_WORD_0 (old); | |
1617 | word1 = SCM_CELL_WORD_1 (old); | |
1618 | SCM_SET_CELL_WORD_0 (old, SCM_CELL_WORD_0 (new)); | |
1619 | SCM_SET_CELL_WORD_1 (old, SCM_CELL_WORD_1 (new)); | |
b6cf4d02 | 1620 | SCM_STRUCT_DATA (old)[scm_vtable_index_self] = SCM_UNPACK (old); |
32b12f40 KR |
1621 | SCM_SET_CELL_WORD_0 (new, word0); |
1622 | SCM_SET_CELL_WORD_1 (new, word1); | |
b6cf4d02 | 1623 | SCM_STRUCT_DATA (new)[scm_vtable_index_self] = SCM_UNPACK (new); |
80662eda | 1624 | } |
9de87eea | 1625 | SCM_CRITICAL_SECTION_END; |
80662eda MD |
1626 | return SCM_UNSPECIFIED; |
1627 | } | |
398d8ee1 | 1628 | #undef FUNC_NAME |
80662eda | 1629 | |
398d8ee1 KN |
1630 | SCM_DEFINE (scm_sys_invalidate_class, "%invalidate-class", 1, 0, 0, |
1631 | (SCM class), | |
1632 | "") | |
1633 | #define FUNC_NAME s_scm_sys_invalidate_class | |
80662eda | 1634 | { |
398d8ee1 | 1635 | SCM_VALIDATE_CLASS (1, class); |
80662eda MD |
1636 | SCM_CLEAR_CLASS_FLAGS (class, SCM_CLASSF_GOOPS_VALID); |
1637 | return SCM_UNSPECIFIED; | |
1638 | } | |
398d8ee1 | 1639 | #undef FUNC_NAME |
80662eda MD |
1640 | |
1641 | /* When instances change class, they finally get a new body, but | |
1642 | * before that, they go through purgatory in hell. Odd as it may | |
1643 | * seem, this data structure saves us from eternal suffering in | |
1644 | * infinite recursions. | |
1645 | */ | |
1646 | ||
92c2555f | 1647 | static scm_t_bits **hell; |
c014a02e ML |
1648 | static long n_hell = 1; /* one place for the evil one himself */ |
1649 | static long hell_size = 4; | |
2132f0d2 | 1650 | static SCM hell_mutex; |
80662eda | 1651 | |
c014a02e | 1652 | static long |
80662eda MD |
1653 | burnin (SCM o) |
1654 | { | |
c014a02e | 1655 | long i; |
80662eda | 1656 | for (i = 1; i < n_hell; ++i) |
6b80d352 | 1657 | if (SCM_STRUCT_DATA (o) == hell[i]) |
80662eda MD |
1658 | return i; |
1659 | return 0; | |
1660 | } | |
1661 | ||
1662 | static void | |
1663 | go_to_hell (void *o) | |
1664 | { | |
b5df9cda | 1665 | SCM obj = *(SCM*)o; |
2132f0d2 | 1666 | scm_lock_mutex (hell_mutex); |
51ef99f7 | 1667 | if (n_hell >= hell_size) |
80662eda | 1668 | { |
51ef99f7 | 1669 | hell_size *= 2; |
408bcd99 | 1670 | hell = scm_realloc (hell, hell_size * sizeof(*hell)); |
80662eda | 1671 | } |
6b80d352 | 1672 | hell[n_hell++] = SCM_STRUCT_DATA (obj); |
2132f0d2 | 1673 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1674 | } |
1675 | ||
1676 | static void | |
1677 | go_to_heaven (void *o) | |
1678 | { | |
b5df9cda | 1679 | SCM obj = *(SCM*)o; |
2132f0d2 | 1680 | scm_lock_mutex (hell_mutex); |
b5df9cda | 1681 | hell[burnin (obj)] = hell[--n_hell]; |
2132f0d2 | 1682 | scm_unlock_mutex (hell_mutex); |
80662eda MD |
1683 | } |
1684 | ||
6b80d352 DH |
1685 | |
1686 | SCM_SYMBOL (scm_sym_change_class, "change-class"); | |
1687 | ||
80662eda | 1688 | static SCM |
b5df9cda | 1689 | purgatory (SCM obj, SCM new_class) |
80662eda | 1690 | { |
b5df9cda | 1691 | return scm_call_2 (SCM_VARIABLE_REF (var_change_class), obj, new_class); |
80662eda MD |
1692 | } |
1693 | ||
38d8927c MD |
1694 | /* This function calls the generic function change-class for all |
1695 | * instances which aren't currently undergoing class change. | |
1696 | */ | |
1697 | ||
80662eda | 1698 | void |
e81d98ec | 1699 | scm_change_object_class (SCM obj, SCM old_class SCM_UNUSED, SCM new_class) |
80662eda MD |
1700 | { |
1701 | if (!burnin (obj)) | |
b5df9cda AW |
1702 | { |
1703 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); | |
1704 | scm_dynwind_rewind_handler (go_to_hell, &obj, SCM_F_WIND_EXPLICITLY); | |
1705 | scm_dynwind_unwind_handler (go_to_heaven, &obj, SCM_F_WIND_EXPLICITLY); | |
1706 | purgatory (obj, new_class); | |
1707 | scm_dynwind_end (); | |
1708 | } | |
80662eda MD |
1709 | } |
1710 | ||
1711 | /****************************************************************************** | |
1712 | * | |
6d77c894 TTN |
1713 | * GGGG FFFFF |
1714 | * G F | |
1715 | * G GG FFF | |
1716 | * G G F | |
80662eda MD |
1717 | * GGG E N E R I C F U N C T I O N S |
1718 | * | |
1719 | * This implementation provides | |
1720 | * - generic functions (with class specializers) | |
1721 | * - multi-methods | |
6d77c894 | 1722 | * - next-method |
80662eda MD |
1723 | * - a hard-coded MOP for standard gf, which can be overloaded for non-std gf |
1724 | * | |
1725 | ******************************************************************************/ | |
1726 | ||
1727 | SCM_KEYWORD (k_name, "name"); | |
1728 | ||
63c1872f | 1729 | SCM_GLOBAL_SYMBOL (scm_sym_args, "args"); |
80662eda | 1730 | |
a4aa2134 | 1731 | |
efcebb5b AW |
1732 | SCM |
1733 | scm_apply_generic (SCM gf, SCM args) | |
1734 | { | |
2f652c68 | 1735 | return scm_apply (SCM_STRUCT_PROCEDURE (gf), args, SCM_EOL); |
efcebb5b AW |
1736 | } |
1737 | ||
1738 | SCM | |
1739 | scm_call_generic_0 (SCM gf) | |
1740 | { | |
2f652c68 | 1741 | return scm_call_0 (SCM_STRUCT_PROCEDURE (gf)); |
efcebb5b AW |
1742 | } |
1743 | ||
1744 | SCM | |
1745 | scm_call_generic_1 (SCM gf, SCM a1) | |
1746 | { | |
2f652c68 | 1747 | return scm_call_1 (SCM_STRUCT_PROCEDURE (gf), a1); |
efcebb5b AW |
1748 | } |
1749 | ||
1750 | SCM | |
1751 | scm_call_generic_2 (SCM gf, SCM a1, SCM a2) | |
1752 | { | |
2f652c68 | 1753 | return scm_call_2 (SCM_STRUCT_PROCEDURE (gf), a1, a2); |
efcebb5b AW |
1754 | } |
1755 | ||
1756 | SCM | |
1757 | scm_call_generic_3 (SCM gf, SCM a1, SCM a2, SCM a3) | |
1758 | { | |
2f652c68 | 1759 | return scm_call_3 (SCM_STRUCT_PROCEDURE (gf), a1, a2, a3); |
efcebb5b AW |
1760 | } |
1761 | ||
60617d81 MW |
1762 | static SCM delayed_compile_var; |
1763 | ||
1764 | static void | |
1765 | init_delayed_compile_var (void) | |
1766 | { | |
1767 | delayed_compile_var | |
1768 | = scm_c_private_lookup ("oop goops dispatch", "delayed-compile"); | |
1769 | } | |
1770 | ||
e29db33c AW |
1771 | static SCM |
1772 | make_dispatch_procedure (SCM gf) | |
1773 | { | |
60617d81 MW |
1774 | static scm_i_pthread_once_t once = SCM_I_PTHREAD_ONCE_INIT; |
1775 | scm_i_pthread_once (&once, init_delayed_compile_var); | |
1776 | ||
1777 | return scm_call_1 (scm_variable_ref (delayed_compile_var), gf); | |
e29db33c AW |
1778 | } |
1779 | ||
80662eda MD |
1780 | static void |
1781 | clear_method_cache (SCM gf) | |
1782 | { | |
e29db33c | 1783 | SCM_SET_GENERIC_DISPATCH_PROCEDURE (gf, make_dispatch_procedure (gf)); |
a9a90a88 | 1784 | SCM_CLEAR_GENERIC_EFFECTIVE_METHODS (gf); |
80662eda MD |
1785 | } |
1786 | ||
398d8ee1 KN |
1787 | SCM_DEFINE (scm_sys_invalidate_method_cache_x, "%invalidate-method-cache!", 1, 0, 0, |
1788 | (SCM gf), | |
1789 | "") | |
1790 | #define FUNC_NAME s_scm_sys_invalidate_method_cache_x | |
80662eda | 1791 | { |
25ba37df | 1792 | SCM_ASSERT (SCM_PUREGENERICP (gf), gf, SCM_ARG1, FUNC_NAME); |
6d33e90f | 1793 | clear_method_cache (gf); |
80662eda MD |
1794 | return SCM_UNSPECIFIED; |
1795 | } | |
398d8ee1 | 1796 | #undef FUNC_NAME |
80662eda | 1797 | |
398d8ee1 KN |
1798 | SCM_DEFINE (scm_generic_capability_p, "generic-capability?", 1, 0, 0, |
1799 | (SCM proc), | |
1800 | "") | |
1801 | #define FUNC_NAME s_scm_generic_capability_p | |
80662eda | 1802 | { |
7888309b | 1803 | SCM_ASSERT (scm_is_true (scm_procedure_p (proc)), |
398d8ee1 | 1804 | proc, SCM_ARG1, FUNC_NAME); |
9fdf9fd3 | 1805 | return (SCM_PRIMITIVE_GENERIC_P (proc) ? SCM_BOOL_T : SCM_BOOL_F); |
80662eda | 1806 | } |
398d8ee1 | 1807 | #undef FUNC_NAME |
80662eda | 1808 | |
398d8ee1 KN |
1809 | SCM_DEFINE (scm_enable_primitive_generic_x, "enable-primitive-generic!", 0, 0, 1, |
1810 | (SCM subrs), | |
1811 | "") | |
1812 | #define FUNC_NAME s_scm_enable_primitive_generic_x | |
80662eda | 1813 | { |
6b80d352 | 1814 | SCM_VALIDATE_REST_ARGUMENT (subrs); |
d2e53ed6 | 1815 | while (!scm_is_null (subrs)) |
80662eda MD |
1816 | { |
1817 | SCM subr = SCM_CAR (subrs); | |
9fdf9fd3 | 1818 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARGn, FUNC_NAME); |
52fd9639 AW |
1819 | SCM_SET_SUBR_GENERIC (subr, |
1820 | scm_make (scm_list_3 (scm_class_generic, | |
1821 | k_name, | |
1822 | SCM_SUBR_NAME (subr)))); | |
80662eda MD |
1823 | subrs = SCM_CDR (subrs); |
1824 | } | |
1825 | return SCM_UNSPECIFIED; | |
1826 | } | |
398d8ee1 | 1827 | #undef FUNC_NAME |
80662eda | 1828 | |
9f63ce02 AW |
1829 | SCM_DEFINE (scm_set_primitive_generic_x, "set-primitive-generic!", 2, 0, 0, |
1830 | (SCM subr, SCM generic), | |
1831 | "") | |
1832 | #define FUNC_NAME s_scm_set_primitive_generic_x | |
1833 | { | |
9fdf9fd3 | 1834 | SCM_ASSERT (SCM_PRIMITIVE_GENERIC_P (subr), subr, SCM_ARG1, FUNC_NAME); |
9f63ce02 | 1835 | SCM_ASSERT (SCM_PUREGENERICP (generic), generic, SCM_ARG2, FUNC_NAME); |
52fd9639 | 1836 | SCM_SET_SUBR_GENERIC (subr, generic); |
9f63ce02 AW |
1837 | return SCM_UNSPECIFIED; |
1838 | } | |
1839 | #undef FUNC_NAME | |
1840 | ||
398d8ee1 KN |
1841 | SCM_DEFINE (scm_primitive_generic_generic, "primitive-generic-generic", 1, 0, 0, |
1842 | (SCM subr), | |
1843 | "") | |
1844 | #define FUNC_NAME s_scm_primitive_generic_generic | |
80662eda | 1845 | { |
9fdf9fd3 | 1846 | if (SCM_PRIMITIVE_GENERIC_P (subr)) |
80662eda | 1847 | { |
b2b33168 | 1848 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (subr))) |
a48d60b1 MD |
1849 | scm_enable_primitive_generic_x (scm_list_1 (subr)); |
1850 | return *SCM_SUBR_GENERIC (subr); | |
80662eda | 1851 | } |
db4b4ca6 | 1852 | SCM_WRONG_TYPE_ARG (SCM_ARG1, subr); |
80662eda | 1853 | } |
398d8ee1 | 1854 | #undef FUNC_NAME |
80662eda | 1855 | |
a48d60b1 MD |
1856 | typedef struct t_extension { |
1857 | struct t_extension *next; | |
1858 | SCM extended; | |
1859 | SCM extension; | |
1860 | } t_extension; | |
1861 | ||
d0cad249 LC |
1862 | |
1863 | /* Hint for `scm_gc_malloc ()' et al. when allocating `t_extension' | |
1864 | objects. */ | |
1865 | static const char extension_gc_hint[] = "GOOPS extension"; | |
1866 | ||
a48d60b1 MD |
1867 | static t_extension *extensions = 0; |
1868 | ||
a48d60b1 MD |
1869 | void |
1870 | scm_c_extend_primitive_generic (SCM extended, SCM extension) | |
1871 | { | |
1872 | if (goops_loaded_p) | |
1873 | { | |
1874 | SCM gf, gext; | |
b2b33168 | 1875 | if (!SCM_UNPACK (*SCM_SUBR_GENERIC (extended))) |
a48d60b1 MD |
1876 | scm_enable_primitive_generic_x (scm_list_1 (extended)); |
1877 | gf = *SCM_SUBR_GENERIC (extended); | |
1878 | gext = scm_call_2 (SCM_VARIABLE_REF (scm_var_make_extended_generic), | |
1879 | gf, | |
ce471ab8 | 1880 | SCM_SUBR_NAME (extension)); |
feccd2d3 | 1881 | SCM_SET_SUBR_GENERIC (extension, gext); |
a48d60b1 MD |
1882 | } |
1883 | else | |
1884 | { | |
d0cad249 LC |
1885 | t_extension *e = scm_gc_malloc (sizeof (t_extension), |
1886 | extension_gc_hint); | |
a48d60b1 MD |
1887 | t_extension **loc = &extensions; |
1888 | /* Make sure that extensions are placed before their own | |
1889 | * extensions in the extensions list. O(N^2) algorithm, but | |
1890 | * extensions of primitive generics are rare. | |
1891 | */ | |
d223c3fc | 1892 | while (*loc && !scm_is_eq (extension, (*loc)->extended)) |
a48d60b1 MD |
1893 | loc = &(*loc)->next; |
1894 | e->next = *loc; | |
1895 | e->extended = extended; | |
1896 | e->extension = extension; | |
1897 | *loc = e; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | static void | |
1902 | setup_extended_primitive_generics () | |
1903 | { | |
1904 | while (extensions) | |
1905 | { | |
1906 | t_extension *e = extensions; | |
1907 | scm_c_extend_primitive_generic (e->extended, e->extension); | |
1908 | extensions = e->next; | |
a48d60b1 MD |
1909 | } |
1910 | } | |
1911 | ||
80662eda | 1912 | /****************************************************************************** |
6d77c894 | 1913 | * |
80662eda | 1914 | * Protocol for calling a generic fumction |
6d77c894 | 1915 | * This protocol is roughly equivalent to (parameter are a little bit different |
80662eda MD |
1916 | * for efficiency reasons): |
1917 | * | |
1918 | * + apply-generic (gf args) | |
1919 | * + compute-applicable-methods (gf args ...) | |
1920 | * + sort-applicable-methods (methods args) | |
1921 | * + apply-methods (gf methods args) | |
6d77c894 TTN |
1922 | * |
1923 | * apply-methods calls make-next-method to build the "continuation" of a a | |
80662eda MD |
1924 | * method. Applying a next-method will call apply-next-method which in |
1925 | * turn will call apply again to call effectively the following method. | |
1926 | * | |
1927 | ******************************************************************************/ | |
1928 | ||
1929 | static int | |
1930 | applicablep (SCM actual, SCM formal) | |
1931 | { | |
79a3dafe | 1932 | /* We already know that the cpl is well formed. */ |
7888309b | 1933 | return scm_is_true (scm_c_memq (formal, SCM_SLOT (actual, scm_si_cpl))); |
80662eda MD |
1934 | } |
1935 | ||
1936 | static int | |
34d19ef6 | 1937 | more_specificp (SCM m1, SCM m2, SCM const *targs) |
80662eda MD |
1938 | { |
1939 | register SCM s1, s2; | |
c014a02e | 1940 | register long i; |
6d77c894 TTN |
1941 | /* |
1942 | * Note: | |
1943 | * m1 and m2 can have != length (i.e. one can be one element longer than the | |
80662eda MD |
1944 | * other when we have a dotted parameter list). For instance, with the call |
1945 | * (M 1) | |
1946 | * with | |
1947 | * (define-method M (a . l) ....) | |
6d77c894 | 1948 | * (define-method M (a) ....) |
80662eda MD |
1949 | * |
1950 | * we consider that the second method is more specific. | |
1951 | * | |
1952 | * BTW, targs is an array of types. We don't need it's size since | |
1953 | * we already know that m1 and m2 are applicable (no risk to go past | |
1954 | * the end of this array). | |
1955 | * | |
1956 | */ | |
34d19ef6 | 1957 | for (i=0, s1=SPEC_OF(m1), s2=SPEC_OF(m2); ; i++, s1=SCM_CDR(s1), s2=SCM_CDR(s2)) { |
d2e53ed6 MV |
1958 | if (scm_is_null(s1)) return 1; |
1959 | if (scm_is_null(s2)) return 0; | |
d223c3fc | 1960 | if (!scm_is_eq (SCM_CAR(s1), SCM_CAR(s2))) { |
80662eda | 1961 | register SCM l, cs1 = SCM_CAR(s1), cs2 = SCM_CAR(s2); |
6d77c894 | 1962 | |
dcb410ec | 1963 | for (l = SCM_SLOT (targs[i], scm_si_cpl); ; l = SCM_CDR(l)) { |
d223c3fc | 1964 | if (scm_is_eq (cs1, SCM_CAR (l))) |
80662eda | 1965 | return 1; |
d223c3fc | 1966 | if (scm_is_eq (cs2, SCM_CAR (l))) |
80662eda MD |
1967 | return 0; |
1968 | } | |
1969 | return 0;/* should not occur! */ | |
1970 | } | |
1971 | } | |
1972 | return 0; /* should not occur! */ | |
1973 | } | |
1974 | ||
1975 | #define BUFFSIZE 32 /* big enough for most uses */ | |
1976 | ||
1977 | static SCM | |
c014a02e | 1978 | scm_i_vector2list (SCM l, long len) |
80662eda | 1979 | { |
c014a02e | 1980 | long j; |
00ffa0e7 | 1981 | SCM z = scm_c_make_vector (len, SCM_UNDEFINED); |
6d77c894 | 1982 | |
80662eda | 1983 | for (j = 0; j < len; j++, l = SCM_CDR (l)) { |
4057a3e0 | 1984 | SCM_SIMPLE_VECTOR_SET (z, j, SCM_CAR (l)); |
80662eda MD |
1985 | } |
1986 | return z; | |
1987 | } | |
1988 | ||
1989 | static SCM | |
34d19ef6 | 1990 | sort_applicable_methods (SCM method_list, long size, SCM const *targs) |
80662eda | 1991 | { |
c014a02e | 1992 | long i, j, incr; |
80662eda MD |
1993 | SCM *v, vector = SCM_EOL; |
1994 | SCM buffer[BUFFSIZE]; | |
1995 | SCM save = method_list; | |
4057a3e0 | 1996 | scm_t_array_handle handle; |
80662eda MD |
1997 | |
1998 | /* For reasonably sized method_lists we can try to avoid all the | |
1999 | * consing and reorder the list in place... | |
2000 | * This idea is due to David McClain <Dave_McClain@msn.com> | |
2001 | */ | |
2002 | if (size <= BUFFSIZE) | |
2003 | { | |
2004 | for (i = 0; i < size; i++) | |
2005 | { | |
2006 | buffer[i] = SCM_CAR (method_list); | |
2007 | method_list = SCM_CDR (method_list); | |
2008 | } | |
2009 | v = buffer; | |
6d77c894 | 2010 | } |
80662eda MD |
2011 | else |
2012 | { | |
2013 | /* Too many elements in method_list to keep everything locally */ | |
2014 | vector = scm_i_vector2list (save, size); | |
4057a3e0 | 2015 | v = scm_vector_writable_elements (vector, &handle, NULL, NULL); |
80662eda MD |
2016 | } |
2017 | ||
6d77c894 | 2018 | /* Use a simple shell sort since it is generally faster than qsort on |
80662eda MD |
2019 | * small vectors (which is probably mostly the case when we have to |
2020 | * sort a list of applicable methods). | |
2021 | */ | |
2022 | for (incr = size / 2; incr; incr /= 2) | |
2023 | { | |
2024 | for (i = incr; i < size; i++) | |
2025 | { | |
2026 | for (j = i - incr; j >= 0; j -= incr) | |
2027 | { | |
2028 | if (more_specificp (v[j], v[j+incr], targs)) | |
2029 | break; | |
2030 | else | |
2031 | { | |
2032 | SCM tmp = v[j + incr]; | |
2033 | v[j + incr] = v[j]; | |
2034 | v[j] = tmp; | |
2035 | } | |
2036 | } | |
2037 | } | |
2038 | } | |
2039 | ||
2040 | if (size <= BUFFSIZE) | |
2041 | { | |
2042 | /* We did it in locally, so restore the original list (reordered) in-place */ | |
2043 | for (i = 0, method_list = save; i < size; i++, v++) | |
2044 | { | |
2045 | SCM_SETCAR (method_list, *v); | |
2046 | method_list = SCM_CDR (method_list); | |
2047 | } | |
2048 | return save; | |
2049 | } | |
4057a3e0 | 2050 | |
6d77c894 | 2051 | /* If we are here, that's that we did it the hard way... */ |
c8857a4d | 2052 | scm_array_handle_release (&handle); |
80662eda MD |
2053 | return scm_vector_to_list (vector); |
2054 | } | |
2055 | ||
649ec8d8 AW |
2056 | static int |
2057 | is_accessor_method (SCM method) { | |
2058 | return SCM_IS_A_P (method, scm_class_accessor_method); | |
2059 | } | |
2060 | ||
80662eda | 2061 | SCM |
c014a02e | 2062 | scm_compute_applicable_methods (SCM gf, SCM args, long len, int find_method_p) |
80662eda | 2063 | { |
c014a02e ML |
2064 | register long i; |
2065 | long count = 0; | |
80662eda MD |
2066 | SCM l, fl, applicable = SCM_EOL; |
2067 | SCM save = args; | |
34d19ef6 HWN |
2068 | SCM buffer[BUFFSIZE]; |
2069 | SCM const *types; | |
2070 | SCM *p; | |
2071 | SCM tmp = SCM_EOL; | |
4057a3e0 | 2072 | scm_t_array_handle handle; |
6d77c894 | 2073 | |
80662eda | 2074 | /* Build the list of arguments types */ |
4057a3e0 MV |
2075 | if (len >= BUFFSIZE) |
2076 | { | |
2077 | tmp = scm_c_make_vector (len, SCM_UNDEFINED); | |
2078 | types = p = scm_vector_writable_elements (tmp, &handle, NULL, NULL); | |
34d19ef6 HWN |
2079 | |
2080 | /* | |
2081 | note that we don't have to work to reset the generation | |
2082 | count. TMP is a new vector anyway, and it is found | |
2083 | conservatively. | |
2084 | */ | |
4057a3e0 | 2085 | } |
80662eda MD |
2086 | else |
2087 | types = p = buffer; | |
6d77c894 | 2088 | |
d2e53ed6 | 2089 | for ( ; !scm_is_null (args); args = SCM_CDR (args)) |
80662eda | 2090 | *p++ = scm_class_of (SCM_CAR (args)); |
34d19ef6 | 2091 | |
80662eda | 2092 | /* Build a list of all applicable methods */ |
d2e53ed6 | 2093 | for (l = scm_generic_function_methods (gf); !scm_is_null (l); l = SCM_CDR (l)) |
80662eda MD |
2094 | { |
2095 | fl = SPEC_OF (SCM_CAR (l)); | |
649ec8d8 AW |
2096 | /* Only accept accessors which match exactly in first arg. */ |
2097 | if ((scm_is_null (fl) || types[0] != SCM_CAR (fl)) | |
2098 | && is_accessor_method (SCM_CAR (l))) | |
2099 | continue; | |
80662eda MD |
2100 | for (i = 0; ; i++, fl = SCM_CDR (fl)) |
2101 | { | |
c312aca7 | 2102 | if (SCM_INSTANCEP (fl) |
80662eda | 2103 | /* We have a dotted argument list */ |
d2e53ed6 | 2104 | || (i >= len && scm_is_null (fl))) |
80662eda MD |
2105 | { /* both list exhausted */ |
2106 | applicable = scm_cons (SCM_CAR (l), applicable); | |
2107 | count += 1; | |
2108 | break; | |
2109 | } | |
2110 | if (i >= len | |
d2e53ed6 | 2111 | || scm_is_null (fl) |
80662eda MD |
2112 | || !applicablep (types[i], SCM_CAR (fl))) |
2113 | break; | |
2114 | } | |
2115 | } | |
2116 | ||
c8857a4d MV |
2117 | if (len >= BUFFSIZE) |
2118 | scm_array_handle_release (&handle); | |
2119 | ||
80662eda MD |
2120 | if (count == 0) |
2121 | { | |
2122 | if (find_method_p) | |
2123 | return SCM_BOOL_F; | |
bef95911 | 2124 | scm_call_2 (SCM_VARIABLE_REF (var_no_applicable_method), gf, save); |
80662eda MD |
2125 | /* if we are here, it's because no-applicable-method hasn't signaled an error */ |
2126 | return SCM_BOOL_F; | |
2127 | } | |
34d19ef6 | 2128 | |
80662eda MD |
2129 | return (count == 1 |
2130 | ? applicable | |
2131 | : sort_applicable_methods (applicable, count, types)); | |
2132 | } | |
2133 | ||
2134 | #if 0 | |
2135 | SCM_PROC (s_sys_compute_applicable_methods, "%compute-applicable-methods", 2, 0, 0, scm_sys_compute_applicable_methods); | |
2136 | #endif | |
2137 | ||
2138 | static const char s_sys_compute_applicable_methods[] = "%compute-applicable-methods"; | |
2139 | ||
2140 | SCM | |
2141 | scm_sys_compute_applicable_methods (SCM gf, SCM args) | |
398d8ee1 | 2142 | #define FUNC_NAME s_sys_compute_applicable_methods |
80662eda | 2143 | { |
c014a02e | 2144 | long n; |
398d8ee1 | 2145 | SCM_VALIDATE_GENERIC (1, gf); |
80662eda | 2146 | n = scm_ilength (args); |
398d8ee1 | 2147 | SCM_ASSERT (n >= 0, args, SCM_ARG2, FUNC_NAME); |
80662eda MD |
2148 | return scm_compute_applicable_methods (gf, args, n, 1); |
2149 | } | |
398d8ee1 | 2150 | #undef FUNC_NAME |
80662eda | 2151 | |
86d31dfe | 2152 | SCM_SYMBOL (sym_compute_applicable_methods, "compute-applicable-methods"); |
cc7005bc AW |
2153 | SCM_VARIABLE_INIT (var_compute_applicable_methods, "compute-applicable-methods", |
2154 | scm_c_define_gsubr (s_sys_compute_applicable_methods, 2, 0, 0, | |
2155 | scm_sys_compute_applicable_methods)); | |
80662eda | 2156 | |
80662eda MD |
2157 | /****************************************************************************** |
2158 | * | |
2159 | * A simple make (which will be redefined later in Scheme) | |
2160 | * This version handles only creation of gf, methods and classes (no instances) | |
2161 | * | |
6d77c894 | 2162 | * Since this code will disappear when Goops will be fully booted, |
80662eda MD |
2163 | * no precaution is taken to be efficient. |
2164 | * | |
2165 | ******************************************************************************/ | |
2166 | ||
2167 | SCM_KEYWORD (k_setter, "setter"); | |
2168 | SCM_KEYWORD (k_specializers, "specializers"); | |
2169 | SCM_KEYWORD (k_procedure, "procedure"); | |
5487977b AW |
2170 | SCM_KEYWORD (k_formals, "formals"); |
2171 | SCM_KEYWORD (k_body, "body"); | |
e177058b | 2172 | SCM_KEYWORD (k_make_procedure, "make-procedure"); |
80662eda MD |
2173 | SCM_KEYWORD (k_dsupers, "dsupers"); |
2174 | SCM_KEYWORD (k_slots, "slots"); | |
2175 | SCM_KEYWORD (k_gf, "generic-function"); | |
2176 | ||
398d8ee1 KN |
2177 | SCM_DEFINE (scm_make, "make", 0, 0, 1, |
2178 | (SCM args), | |
27c37006 | 2179 | "Make a new object. @var{args} must contain the class and\n" |
6bcefd15 | 2180 | "all necessary initialization information.") |
398d8ee1 | 2181 | #define FUNC_NAME s_scm_make |
80662eda MD |
2182 | { |
2183 | SCM class, z; | |
c014a02e | 2184 | long len = scm_ilength (args); |
80662eda MD |
2185 | |
2186 | if (len <= 0 || (len & 1) == 0) | |
398d8ee1 | 2187 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2188 | |
2189 | class = SCM_CAR(args); | |
2190 | args = SCM_CDR(args); | |
2191 | ||
d223c3fc AW |
2192 | if (scm_is_eq (class, scm_class_generic) |
2193 | || scm_is_eq (class, scm_class_accessor)) | |
80662eda | 2194 | { |
80662eda | 2195 | z = scm_make_struct (class, SCM_INUM0, |
72d2e7e6 | 2196 | scm_list_4 (SCM_BOOL_F, |
51f66c91 | 2197 | SCM_EOL, |
1afff620 | 2198 | SCM_INUM0, |
bbf8d523 | 2199 | SCM_EOL)); |
80662eda MD |
2200 | scm_set_procedure_property_x (z, scm_sym_name, |
2201 | scm_get_keyword (k_name, | |
2202 | args, | |
2203 | SCM_BOOL_F)); | |
2204 | clear_method_cache (z); | |
d223c3fc | 2205 | if (scm_is_eq (class, scm_class_accessor)) |
80662eda MD |
2206 | { |
2207 | SCM setter = scm_get_keyword (k_setter, args, SCM_BOOL_F); | |
7888309b | 2208 | if (scm_is_true (setter)) |
80662eda MD |
2209 | scm_sys_set_object_setter_x (z, setter); |
2210 | } | |
2211 | } | |
2212 | else | |
2213 | { | |
2214 | z = scm_sys_allocate_instance (class, args); | |
2215 | ||
d223c3fc AW |
2216 | if (scm_is_eq (class, scm_class_method) |
2217 | || scm_is_eq (class, scm_class_accessor_method)) | |
80662eda | 2218 | { |
6d77c894 | 2219 | SCM_SET_SLOT (z, scm_si_generic_function, |
80662eda MD |
2220 | scm_i_get_keyword (k_gf, |
2221 | args, | |
2222 | len - 1, | |
2223 | SCM_BOOL_F, | |
dcb410ec | 2224 | FUNC_NAME)); |
6d77c894 | 2225 | SCM_SET_SLOT (z, scm_si_specializers, |
80662eda MD |
2226 | scm_i_get_keyword (k_specializers, |
2227 | args, | |
2228 | len - 1, | |
2229 | SCM_EOL, | |
dcb410ec | 2230 | FUNC_NAME)); |
6d77c894 | 2231 | SCM_SET_SLOT (z, scm_si_procedure, |
80662eda MD |
2232 | scm_i_get_keyword (k_procedure, |
2233 | args, | |
2234 | len - 1, | |
e177058b | 2235 | SCM_BOOL_F, |
dcb410ec | 2236 | FUNC_NAME)); |
5487977b AW |
2237 | SCM_SET_SLOT (z, scm_si_formals, |
2238 | scm_i_get_keyword (k_formals, | |
2239 | args, | |
2240 | len - 1, | |
2241 | SCM_EOL, | |
2242 | FUNC_NAME)); | |
2243 | SCM_SET_SLOT (z, scm_si_body, | |
2244 | scm_i_get_keyword (k_body, | |
2245 | args, | |
2246 | len - 1, | |
2247 | SCM_EOL, | |
2248 | FUNC_NAME)); | |
e177058b AW |
2249 | SCM_SET_SLOT (z, scm_si_make_procedure, |
2250 | scm_i_get_keyword (k_make_procedure, | |
5487977b AW |
2251 | args, |
2252 | len - 1, | |
2253 | SCM_BOOL_F, | |
2254 | FUNC_NAME)); | |
80662eda MD |
2255 | } |
2256 | else | |
2257 | { | |
2258 | /* In all the others case, make a new class .... No instance here */ | |
b6cf4d02 | 2259 | SCM_SET_SLOT (z, scm_vtable_index_name, |
80662eda MD |
2260 | scm_i_get_keyword (k_name, |
2261 | args, | |
2262 | len - 1, | |
4a655e50 | 2263 | scm_from_latin1_symbol ("???"), |
dcb410ec | 2264 | FUNC_NAME)); |
6d77c894 | 2265 | SCM_SET_SLOT (z, scm_si_direct_supers, |
80662eda MD |
2266 | scm_i_get_keyword (k_dsupers, |
2267 | args, | |
2268 | len - 1, | |
2269 | SCM_EOL, | |
dcb410ec | 2270 | FUNC_NAME)); |
6d77c894 | 2271 | SCM_SET_SLOT (z, scm_si_direct_slots, |
80662eda MD |
2272 | scm_i_get_keyword (k_slots, |
2273 | args, | |
2274 | len - 1, | |
2275 | SCM_EOL, | |
dcb410ec | 2276 | FUNC_NAME)); |
80662eda MD |
2277 | } |
2278 | } | |
2279 | return z; | |
2280 | } | |
398d8ee1 | 2281 | #undef FUNC_NAME |
80662eda | 2282 | |
398d8ee1 KN |
2283 | SCM_DEFINE (scm_find_method, "find-method", 0, 0, 1, |
2284 | (SCM l), | |
2285 | "") | |
2286 | #define FUNC_NAME s_scm_find_method | |
80662eda MD |
2287 | { |
2288 | SCM gf; | |
c014a02e | 2289 | long len = scm_ilength (l); |
80662eda MD |
2290 | |
2291 | if (len == 0) | |
398d8ee1 | 2292 | SCM_WRONG_NUM_ARGS (); |
80662eda MD |
2293 | |
2294 | gf = SCM_CAR(l); l = SCM_CDR(l); | |
398d8ee1 | 2295 | SCM_VALIDATE_GENERIC (1, gf); |
d2e53ed6 | 2296 | if (scm_is_null (SCM_SLOT (gf, scm_si_methods))) |
1afff620 | 2297 | SCM_MISC_ERROR ("no methods for generic ~S", scm_list_1 (gf)); |
80662eda MD |
2298 | |
2299 | return scm_compute_applicable_methods (gf, l, len - 1, 1); | |
2300 | } | |
398d8ee1 | 2301 | #undef FUNC_NAME |
80662eda | 2302 | |
398d8ee1 KN |
2303 | SCM_DEFINE (scm_sys_method_more_specific_p, "%method-more-specific?", 3, 0, 0, |
2304 | (SCM m1, SCM m2, SCM targs), | |
b1f57ea4 LC |
2305 | "Return true if method @var{m1} is more specific than @var{m2} " |
2306 | "given the argument types (classes) listed in @var{targs}.") | |
398d8ee1 | 2307 | #define FUNC_NAME s_scm_sys_method_more_specific_p |
80662eda | 2308 | { |
4057a3e0 MV |
2309 | SCM l, v, result; |
2310 | SCM *v_elts; | |
b1f57ea4 | 2311 | long i, len, m1_specs, m2_specs; |
4057a3e0 | 2312 | scm_t_array_handle handle; |
80662eda | 2313 | |
398d8ee1 KN |
2314 | SCM_VALIDATE_METHOD (1, m1); |
2315 | SCM_VALIDATE_METHOD (2, m2); | |
80662eda | 2316 | |
b1f57ea4 LC |
2317 | len = scm_ilength (targs); |
2318 | m1_specs = scm_ilength (SPEC_OF (m1)); | |
2319 | m2_specs = scm_ilength (SPEC_OF (m2)); | |
2320 | SCM_ASSERT ((len >= m1_specs) || (len >= m2_specs), | |
2321 | targs, SCM_ARG3, FUNC_NAME); | |
2322 | ||
2323 | /* Verify that all the arguments of TARGS are classes and place them | |
2324 | in a vector. */ | |
4057a3e0 | 2325 | |
00ffa0e7 | 2326 | v = scm_c_make_vector (len, SCM_EOL); |
4057a3e0 | 2327 | v_elts = scm_vector_writable_elements (v, &handle, NULL, NULL); |
80662eda | 2328 | |
b1f57ea4 LC |
2329 | for (i = 0, l = targs; |
2330 | i < len && scm_is_pair (l); | |
2331 | i++, l = SCM_CDR (l)) | |
4057a3e0 MV |
2332 | { |
2333 | SCM_ASSERT (SCM_CLASSP (SCM_CAR (l)), targs, SCM_ARG3, FUNC_NAME); | |
b1f57ea4 | 2334 | v_elts[i] = SCM_CAR (l); |
4057a3e0 | 2335 | } |
4057a3e0 | 2336 | result = more_specificp (m1, m2, v_elts) ? SCM_BOOL_T: SCM_BOOL_F; |
c8857a4d MV |
2337 | |
2338 | scm_array_handle_release (&handle); | |
2339 | ||
4057a3e0 | 2340 | return result; |
80662eda | 2341 | } |
398d8ee1 | 2342 | #undef FUNC_NAME |
6d77c894 TTN |
2343 | |
2344 | ||
80662eda MD |
2345 | |
2346 | /****************************************************************************** | |
2347 | * | |
6d77c894 | 2348 | * Initializations |
80662eda MD |
2349 | * |
2350 | ******************************************************************************/ | |
2351 | ||
ae88d9bc AW |
2352 | /* Munge the CPL of C in place such that BEFORE appears before AFTER, |
2353 | assuming that currently the reverse is true. Recalculate slots and | |
2354 | associated getters-n-setters. */ | |
74b6d6e4 MD |
2355 | static void |
2356 | fix_cpl (SCM c, SCM before, SCM after) | |
2357 | { | |
2358 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2359 | SCM ls = scm_c_memq (after, cpl); | |
ae88d9bc AW |
2360 | SCM tail; |
2361 | ||
7888309b | 2362 | if (scm_is_false (ls)) |
74b6d6e4 MD |
2363 | /* if this condition occurs, fix_cpl should not be applied this way */ |
2364 | abort (); | |
ae88d9bc AW |
2365 | |
2366 | tail = scm_delq1_x (before, SCM_CDR (ls)); | |
74b6d6e4 MD |
2367 | SCM_SETCAR (ls, before); |
2368 | SCM_SETCDR (ls, scm_cons (after, tail)); | |
2369 | { | |
2370 | SCM dslots = SCM_SLOT (c, scm_si_direct_slots); | |
2371 | SCM slots = build_slots_list (maplist (dslots), cpl); | |
2372 | SCM g_n_s = compute_getters_n_setters (slots); | |
2373 | SCM_SET_SLOT (c, scm_si_slots, slots); | |
2374 | SCM_SET_SLOT (c, scm_si_getters_n_setters, g_n_s); | |
2375 | } | |
2376 | } | |
2377 | ||
80662eda MD |
2378 | |
2379 | static void | |
2380 | make_stdcls (SCM *var, char *name, SCM meta, SCM super, SCM slots) | |
2381 | { | |
cc95e00a | 2382 | SCM tmp = scm_from_locale_symbol (name); |
6d77c894 | 2383 | |
f39448c5 AW |
2384 | *var = scm_basic_make_class (meta, tmp, |
2385 | scm_is_pair (super) ? super : scm_list_1 (super), | |
2386 | slots); | |
80662eda MD |
2387 | DEFVAR(tmp, *var); |
2388 | } | |
2389 | ||
2390 | ||
2391 | SCM_KEYWORD (k_slot_definition, "slot-definition"); | |
2392 | ||
2393 | static void | |
2394 | create_standard_classes (void) | |
2395 | { | |
2396 | SCM slots; | |
4a655e50 AW |
2397 | SCM method_slots = scm_list_n (scm_from_latin1_symbol ("generic-function"), |
2398 | scm_from_latin1_symbol ("specializers"), | |
6b80d352 | 2399 | sym_procedure, |
4a655e50 AW |
2400 | scm_from_latin1_symbol ("formals"), |
2401 | scm_from_latin1_symbol ("body"), | |
2402 | scm_from_latin1_symbol ("make-procedure"), | |
21497600 | 2403 | SCM_UNDEFINED); |
4a655e50 | 2404 | SCM amethod_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("slot-definition"), |
1afff620 KN |
2405 | k_init_keyword, |
2406 | k_slot_definition)); | |
4a655e50 AW |
2407 | SCM gf_slots = scm_list_4 (scm_from_latin1_symbol ("methods"), |
2408 | scm_list_3 (scm_from_latin1_symbol ("n-specialized"), | |
1afff620 KN |
2409 | k_init_value, |
2410 | SCM_INUM0), | |
4a655e50 | 2411 | scm_list_3 (scm_from_latin1_symbol ("extended-by"), |
bbf8d523 | 2412 | k_init_value, |
b6cf4d02 | 2413 | SCM_EOL), |
4a655e50 | 2414 | scm_from_latin1_symbol ("effective-methods")); |
a9a90a88 | 2415 | SCM setter_slots = scm_list_1 (sym_setter); |
4a655e50 | 2416 | SCM egf_slots = scm_list_1 (scm_list_3 (scm_from_latin1_symbol ("extends"), |
bbf8d523 MD |
2417 | k_init_value, |
2418 | SCM_EOL)); | |
80662eda MD |
2419 | /* Foreign class slot classes */ |
2420 | make_stdcls (&scm_class_foreign_slot, "<foreign-slot>", | |
2421 | scm_class_class, scm_class_top, SCM_EOL); | |
2422 | make_stdcls (&scm_class_protected, "<protected-slot>", | |
2423 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
b6cf4d02 AW |
2424 | make_stdcls (&scm_class_hidden, "<hidden-slot>", |
2425 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
80662eda MD |
2426 | make_stdcls (&scm_class_opaque, "<opaque-slot>", |
2427 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2428 | make_stdcls (&scm_class_read_only, "<read-only-slot>", | |
2429 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2430 | make_stdcls (&scm_class_self, "<self-slot>", | |
b6cf4d02 | 2431 | scm_class_class, scm_class_read_only, SCM_EOL); |
80662eda MD |
2432 | make_stdcls (&scm_class_protected_opaque, "<protected-opaque-slot>", |
2433 | scm_class_class, | |
1afff620 | 2434 | scm_list_2 (scm_class_protected, scm_class_opaque), |
80662eda | 2435 | SCM_EOL); |
b6cf4d02 AW |
2436 | make_stdcls (&scm_class_protected_hidden, "<protected-hidden-slot>", |
2437 | scm_class_class, | |
2438 | scm_list_2 (scm_class_protected, scm_class_hidden), | |
2439 | SCM_EOL); | |
80662eda MD |
2440 | make_stdcls (&scm_class_protected_read_only, "<protected-read-only-slot>", |
2441 | scm_class_class, | |
1afff620 | 2442 | scm_list_2 (scm_class_protected, scm_class_read_only), |
80662eda MD |
2443 | SCM_EOL); |
2444 | make_stdcls (&scm_class_scm, "<scm-slot>", | |
2445 | scm_class_class, scm_class_protected, SCM_EOL); | |
2446 | make_stdcls (&scm_class_int, "<int-slot>", | |
2447 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2448 | make_stdcls (&scm_class_float, "<float-slot>", | |
2449 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2450 | make_stdcls (&scm_class_double, "<double-slot>", | |
2451 | scm_class_class, scm_class_foreign_slot, SCM_EOL); | |
2452 | ||
2453 | /* Continue initialization of class <class> */ | |
6d77c894 | 2454 | |
80662eda | 2455 | slots = build_class_class_slots (); |
dcb410ec DH |
2456 | SCM_SET_SLOT (scm_class_class, scm_si_direct_slots, slots); |
2457 | SCM_SET_SLOT (scm_class_class, scm_si_slots, slots); | |
2458 | SCM_SET_SLOT (scm_class_class, scm_si_getters_n_setters, | |
2459 | compute_getters_n_setters (slots)); | |
6d77c894 | 2460 | |
80662eda MD |
2461 | /* scm_class_generic functions classes */ |
2462 | make_stdcls (&scm_class_procedure_class, "<procedure-class>", | |
2463 | scm_class_class, scm_class_class, SCM_EOL); | |
51f66c91 | 2464 | make_stdcls (&scm_class_applicable_struct_class, "<applicable-struct-class>", |
80662eda | 2465 | scm_class_class, scm_class_procedure_class, SCM_EOL); |
2f652c68 | 2466 | SCM_SET_VTABLE_FLAGS (scm_class_applicable_struct_class, SCM_VTABLE_FLAG_APPLICABLE_VTABLE); |
80662eda MD |
2467 | make_stdcls (&scm_class_method, "<method>", |
2468 | scm_class_class, scm_class_object, method_slots); | |
f8af5c6d | 2469 | make_stdcls (&scm_class_accessor_method, "<accessor-method>", |
51f66c91 | 2470 | scm_class_class, scm_class_method, amethod_slots); |
74b6d6e4 MD |
2471 | make_stdcls (&scm_class_applicable, "<applicable>", |
2472 | scm_class_class, scm_class_top, SCM_EOL); | |
51f66c91 AW |
2473 | make_stdcls (&scm_class_applicable_struct, "<applicable-struct>", |
2474 | scm_class_applicable_struct_class, | |
74b6d6e4 | 2475 | scm_list_2 (scm_class_object, scm_class_applicable), |
51f66c91 | 2476 | scm_list_1 (sym_procedure)); |
80662eda | 2477 | make_stdcls (&scm_class_generic, "<generic>", |
51f66c91 | 2478 | scm_class_applicable_struct_class, scm_class_applicable_struct, gf_slots); |
80662eda | 2479 | SCM_SET_CLASS_FLAGS (scm_class_generic, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 | 2480 | make_stdcls (&scm_class_extended_generic, "<extended-generic>", |
51f66c91 | 2481 | scm_class_applicable_struct_class, scm_class_generic, egf_slots); |
bbf8d523 | 2482 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic, SCM_CLASSF_PURE_GENERIC); |
80662eda | 2483 | make_stdcls (&scm_class_generic_with_setter, "<generic-with-setter>", |
51f66c91 | 2484 | scm_class_applicable_struct_class, scm_class_generic, setter_slots); |
80662eda | 2485 | SCM_SET_CLASS_FLAGS (scm_class_generic_with_setter, SCM_CLASSF_PURE_GENERIC); |
f8af5c6d | 2486 | make_stdcls (&scm_class_accessor, "<accessor>", |
51f66c91 | 2487 | scm_class_applicable_struct_class, scm_class_generic_with_setter, SCM_EOL); |
f8af5c6d | 2488 | SCM_SET_CLASS_FLAGS (scm_class_accessor, SCM_CLASSF_PURE_GENERIC); |
bbf8d523 MD |
2489 | make_stdcls (&scm_class_extended_generic_with_setter, |
2490 | "<extended-generic-with-setter>", | |
51f66c91 | 2491 | scm_class_applicable_struct_class, |
ae88d9bc AW |
2492 | scm_list_2 (scm_class_extended_generic, |
2493 | scm_class_generic_with_setter), | |
bbf8d523 MD |
2494 | SCM_EOL); |
2495 | SCM_SET_CLASS_FLAGS (scm_class_extended_generic_with_setter, | |
2496 | SCM_CLASSF_PURE_GENERIC); | |
74b6d6e4 | 2497 | make_stdcls (&scm_class_extended_accessor, "<extended-accessor>", |
51f66c91 | 2498 | scm_class_applicable_struct_class, |
74b6d6e4 MD |
2499 | scm_list_2 (scm_class_accessor, |
2500 | scm_class_extended_generic_with_setter), | |
2501 | SCM_EOL); | |
ae88d9bc | 2502 | /* <extended-generic> is misplaced. */ |
74b6d6e4 | 2503 | fix_cpl (scm_class_extended_accessor, |
ae88d9bc | 2504 | scm_class_extended_generic, scm_class_generic_with_setter); |
74b6d6e4 | 2505 | SCM_SET_CLASS_FLAGS (scm_class_extended_accessor, SCM_CLASSF_PURE_GENERIC); |
80662eda MD |
2506 | |
2507 | /* Primitive types classes */ | |
2508 | make_stdcls (&scm_class_boolean, "<boolean>", | |
2509 | scm_class_class, scm_class_top, SCM_EOL); | |
2510 | make_stdcls (&scm_class_char, "<char>", | |
2511 | scm_class_class, scm_class_top, SCM_EOL); | |
2512 | make_stdcls (&scm_class_list, "<list>", | |
2513 | scm_class_class, scm_class_top, SCM_EOL); | |
2514 | make_stdcls (&scm_class_pair, "<pair>", | |
2515 | scm_class_class, scm_class_list, SCM_EOL); | |
2516 | make_stdcls (&scm_class_null, "<null>", | |
2517 | scm_class_class, scm_class_list, SCM_EOL); | |
2518 | make_stdcls (&scm_class_string, "<string>", | |
2519 | scm_class_class, scm_class_top, SCM_EOL); | |
2520 | make_stdcls (&scm_class_symbol, "<symbol>", | |
2521 | scm_class_class, scm_class_top, SCM_EOL); | |
2522 | make_stdcls (&scm_class_vector, "<vector>", | |
2523 | scm_class_class, scm_class_top, SCM_EOL); | |
e2c2a699 AW |
2524 | make_stdcls (&class_foreign, "<foreign>", |
2525 | scm_class_class, scm_class_top, SCM_EOL); | |
9ea31741 AW |
2526 | make_stdcls (&class_hashtable, "<hashtable>", |
2527 | scm_class_class, scm_class_top, SCM_EOL); | |
2528 | make_stdcls (&class_fluid, "<fluid>", | |
2529 | scm_class_class, scm_class_top, SCM_EOL); | |
2530 | make_stdcls (&class_dynamic_state, "<dynamic-state>", | |
c99de5aa | 2531 | scm_class_class, scm_class_top, SCM_EOL); |
6f3b0cc2 AW |
2532 | make_stdcls (&class_frame, "<frame>", |
2533 | scm_class_class, scm_class_top, SCM_EOL); | |
2534 | make_stdcls (&class_objcode, "<objcode>", | |
2535 | scm_class_class, scm_class_top, SCM_EOL); | |
2536 | make_stdcls (&class_vm, "<vm>", | |
2537 | scm_class_class, scm_class_top, SCM_EOL); | |
2538 | make_stdcls (&class_vm_cont, "<vm-continuation>", | |
2539 | scm_class_class, scm_class_top, SCM_EOL); | |
f826a886 AW |
2540 | make_stdcls (&class_bytevector, "<bytevector>", |
2541 | scm_class_class, scm_class_top, SCM_EOL); | |
2542 | make_stdcls (&class_uvec, "<uvec>", | |
2543 | scm_class_class, class_bytevector, SCM_EOL); | |
b2637c98 AW |
2544 | make_stdcls (&class_array, "<array>", |
2545 | scm_class_class, scm_class_top, SCM_EOL); | |
ff1feca9 AW |
2546 | make_stdcls (&class_bitvector, "<bitvector>", |
2547 | scm_class_class, scm_class_top, SCM_EOL); | |
80662eda MD |
2548 | make_stdcls (&scm_class_number, "<number>", |
2549 | scm_class_class, scm_class_top, SCM_EOL); | |
2550 | make_stdcls (&scm_class_complex, "<complex>", | |
2551 | scm_class_class, scm_class_number, SCM_EOL); | |
2552 | make_stdcls (&scm_class_real, "<real>", | |
2553 | scm_class_class, scm_class_complex, SCM_EOL); | |
2554 | make_stdcls (&scm_class_integer, "<integer>", | |
2555 | scm_class_class, scm_class_real, SCM_EOL); | |
f92e85f7 MV |
2556 | make_stdcls (&scm_class_fraction, "<fraction>", |
2557 | scm_class_class, scm_class_real, SCM_EOL); | |
80662eda MD |
2558 | make_stdcls (&scm_class_keyword, "<keyword>", |
2559 | scm_class_class, scm_class_top, SCM_EOL); | |
2560 | make_stdcls (&scm_class_unknown, "<unknown>", | |
2561 | scm_class_class, scm_class_top, SCM_EOL); | |
2562 | make_stdcls (&scm_class_procedure, "<procedure>", | |
74b6d6e4 | 2563 | scm_class_procedure_class, scm_class_applicable, SCM_EOL); |
80662eda MD |
2564 | make_stdcls (&scm_class_primitive_generic, "<primitive-generic>", |
2565 | scm_class_procedure_class, scm_class_procedure, SCM_EOL); | |
2566 | make_stdcls (&scm_class_port, "<port>", | |
2567 | scm_class_class, scm_class_top, SCM_EOL); | |
2568 | make_stdcls (&scm_class_input_port, "<input-port>", | |
2569 | scm_class_class, scm_class_port, SCM_EOL); | |
2570 | make_stdcls (&scm_class_output_port, "<output-port>", | |
2571 | scm_class_class, scm_class_port, SCM_EOL); | |
2572 | make_stdcls (&scm_class_input_output_port, "<input-output-port>", | |
2573 | scm_class_class, | |
1afff620 | 2574 | scm_list_2 (scm_class_input_port, scm_class_output_port), |
80662eda MD |
2575 | SCM_EOL); |
2576 | } | |
2577 | ||
2578 | /********************************************************************** | |
2579 | * | |
2580 | * Smob classes | |
2581 | * | |
2582 | **********************************************************************/ | |
2583 | ||
2584 | static SCM | |
da0e6c2b | 2585 | make_class_from_template (char const *template, char const *type_name, SCM supers, int applicablep) |
80662eda MD |
2586 | { |
2587 | SCM class, name; | |
2588 | if (type_name) | |
2589 | { | |
2590 | char buffer[100]; | |
2591 | sprintf (buffer, template, type_name); | |
cc95e00a | 2592 | name = scm_from_locale_symbol (buffer); |
80662eda MD |
2593 | } |
2594 | else | |
2595 | name = SCM_GOOPS_UNBOUND; | |
2596 | ||
f39448c5 AW |
2597 | class = scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2598 | name, supers, SCM_EOL); | |
80662eda MD |
2599 | |
2600 | /* Only define name if doesn't already exist. */ | |
2601 | if (!SCM_GOOPS_UNBOUNDP (name) | |
bef95911 | 2602 | && scm_is_false (scm_module_variable (scm_module_goops, name))) |
0ba8a0a5 | 2603 | DEFVAR (name, class); |
80662eda MD |
2604 | return class; |
2605 | } | |
2606 | ||
9db8cf16 MG |
2607 | static SCM |
2608 | make_class_from_symbol (SCM type_name_sym, SCM supers, int applicablep) | |
2609 | { | |
2610 | SCM class, name; | |
393baa8a | 2611 | if (scm_is_true (type_name_sym)) |
9db8cf16 MG |
2612 | { |
2613 | name = scm_string_append (scm_list_3 (scm_from_locale_string ("<"), | |
2614 | scm_symbol_to_string (type_name_sym), | |
2615 | scm_from_locale_string (">"))); | |
2616 | name = scm_string_to_symbol (name); | |
2617 | } | |
2618 | else | |
2619 | name = SCM_GOOPS_UNBOUND; | |
2620 | ||
f39448c5 AW |
2621 | class = scm_basic_make_class (applicablep ? scm_class_procedure_class : scm_class_class, |
2622 | name, supers, SCM_EOL); | |
9db8cf16 MG |
2623 | |
2624 | /* Only define name if doesn't already exist. */ | |
2625 | if (!SCM_GOOPS_UNBOUNDP (name) | |
2626 | && scm_is_false (scm_module_variable (scm_module_goops, name))) | |
2627 | DEFVAR (name, class); | |
2628 | return class; | |
2629 | } | |
2630 | ||
80662eda | 2631 | SCM |
da0e6c2b | 2632 | scm_make_extended_class (char const *type_name, int applicablep) |
80662eda MD |
2633 | { |
2634 | return make_class_from_template ("<%s>", | |
2635 | type_name, | |
74b6d6e4 MD |
2636 | scm_list_1 (applicablep |
2637 | ? scm_class_applicable | |
2638 | : scm_class_top), | |
2639 | applicablep); | |
2640 | } | |
2641 | ||
9db8cf16 MG |
2642 | static SCM |
2643 | scm_make_extended_class_from_symbol (SCM type_name_sym, int applicablep) | |
2644 | { | |
2645 | return make_class_from_symbol (type_name_sym, | |
2646 | scm_list_1 (applicablep | |
2647 | ? scm_class_applicable | |
2648 | : scm_class_top), | |
2649 | applicablep); | |
2650 | } | |
2651 | ||
74b6d6e4 MD |
2652 | void |
2653 | scm_i_inherit_applicable (SCM c) | |
2654 | { | |
2655 | if (!SCM_SUBCLASSP (c, scm_class_applicable)) | |
2656 | { | |
2657 | SCM dsupers = SCM_SLOT (c, scm_si_direct_supers); | |
2658 | SCM cpl = SCM_SLOT (c, scm_si_cpl); | |
2659 | /* patch scm_class_applicable into direct-supers */ | |
2660 | SCM top = scm_c_memq (scm_class_top, dsupers); | |
7888309b | 2661 | if (scm_is_false (top)) |
74b6d6e4 MD |
2662 | dsupers = scm_append (scm_list_2 (dsupers, |
2663 | scm_list_1 (scm_class_applicable))); | |
2664 | else | |
2665 | { | |
2666 | SCM_SETCAR (top, scm_class_applicable); | |
2667 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2668 | } | |
2669 | SCM_SET_SLOT (c, scm_si_direct_supers, dsupers); | |
2670 | /* patch scm_class_applicable into cpl */ | |
2671 | top = scm_c_memq (scm_class_top, cpl); | |
7888309b | 2672 | if (scm_is_false (top)) |
74b6d6e4 MD |
2673 | abort (); |
2674 | else | |
2675 | { | |
2676 | SCM_SETCAR (top, scm_class_applicable); | |
2677 | SCM_SETCDR (top, scm_cons (scm_class_top, SCM_CDR (top))); | |
2678 | } | |
2679 | /* add class to direct-subclasses of scm_class_applicable */ | |
2680 | SCM_SET_SLOT (scm_class_applicable, | |
2681 | scm_si_direct_subclasses, | |
2682 | scm_cons (c, SCM_SLOT (scm_class_applicable, | |
2683 | scm_si_direct_subclasses))); | |
2684 | } | |
80662eda MD |
2685 | } |
2686 | ||
2687 | static void | |
2688 | create_smob_classes (void) | |
2689 | { | |
c014a02e | 2690 | long i; |
80662eda | 2691 | |
c891a40e | 2692 | for (i = 0; i < SCM_I_MAX_SMOB_TYPE_COUNT; ++i) |
393baa8a | 2693 | scm_smob_class[i] = SCM_BOOL_F; |
80662eda | 2694 | |
80662eda | 2695 | scm_smob_class[SCM_TC2SMOBNUM (scm_tc16_keyword)] = scm_class_keyword; |
6d77c894 | 2696 | |
80662eda | 2697 | for (i = 0; i < scm_numsmob; ++i) |
393baa8a | 2698 | if (scm_is_false (scm_smob_class[i])) |
74b6d6e4 MD |
2699 | scm_smob_class[i] = scm_make_extended_class (SCM_SMOBNAME (i), |
2700 | scm_smobs[i].apply != 0); | |
80662eda MD |
2701 | } |
2702 | ||
2703 | void | |
c014a02e | 2704 | scm_make_port_classes (long ptobnum, char *type_name) |
80662eda MD |
2705 | { |
2706 | SCM c, class = make_class_from_template ("<%s-port>", | |
2707 | type_name, | |
74b6d6e4 MD |
2708 | scm_list_1 (scm_class_port), |
2709 | 0); | |
80662eda MD |
2710 | scm_port_class[SCM_IN_PCLASS_INDEX + ptobnum] |
2711 | = make_class_from_template ("<%s-input-port>", | |
2712 | type_name, | |
74b6d6e4 MD |
2713 | scm_list_2 (class, scm_class_input_port), |
2714 | 0); | |
80662eda MD |
2715 | scm_port_class[SCM_OUT_PCLASS_INDEX + ptobnum] |
2716 | = make_class_from_template ("<%s-output-port>", | |
2717 | type_name, | |
74b6d6e4 MD |
2718 | scm_list_2 (class, scm_class_output_port), |
2719 | 0); | |
80662eda MD |
2720 | scm_port_class[SCM_INOUT_PCLASS_INDEX + ptobnum] |
2721 | = c | |
2722 | = make_class_from_template ("<%s-input-output-port>", | |
2723 | type_name, | |
74b6d6e4 MD |
2724 | scm_list_2 (class, scm_class_input_output_port), |
2725 | 0); | |
80662eda | 2726 | /* Patch cpl (since this tree is too complex for the C level compute-cpl) */ |
dcb410ec DH |
2727 | SCM_SET_SLOT (c, scm_si_cpl, |
2728 | scm_cons2 (c, class, SCM_SLOT (scm_class_input_output_port, scm_si_cpl))); | |
80662eda MD |
2729 | } |
2730 | ||
2731 | static void | |
2732 | create_port_classes (void) | |
2733 | { | |
c014a02e | 2734 | long i; |
80662eda | 2735 | |
80662eda MD |
2736 | for (i = 0; i < scm_numptob; ++i) |
2737 | scm_make_port_classes (i, SCM_PTOBNAME (i)); | |
2738 | } | |
2739 | ||
2740 | static SCM | |
74b6d6e4 MD |
2741 | make_struct_class (void *closure SCM_UNUSED, |
2742 | SCM vtable, SCM data, SCM prev SCM_UNUSED) | |
80662eda | 2743 | { |
f3c6a02c AW |
2744 | if (scm_is_false (data)) |
2745 | scm_i_define_class_for_vtable (vtable); | |
80662eda MD |
2746 | return SCM_UNSPECIFIED; |
2747 | } | |
2748 | ||
2749 | static void | |
2750 | create_struct_classes (void) | |
2751 | { | |
ea742d29 | 2752 | /* FIXME: take the vtable_class_map while initializing goops? */ |
f3c6a02c AW |
2753 | scm_internal_hash_fold (make_struct_class, 0, SCM_BOOL_F, |
2754 | vtable_class_map); | |
80662eda MD |
2755 | } |
2756 | ||
2757 | /********************************************************************** | |
2758 | * | |
2759 | * C interface | |
2760 | * | |
2761 | **********************************************************************/ | |
2762 | ||
2763 | void | |
2764 | scm_load_goops () | |
2765 | { | |
2766 | if (!goops_loaded_p) | |
abd28220 | 2767 | scm_c_resolve_module ("oop goops"); |
80662eda MD |
2768 | } |
2769 | ||
e11208ca | 2770 | |
80662eda MD |
2771 | SCM_SYMBOL (sym_o, "o"); |
2772 | SCM_SYMBOL (sym_x, "x"); | |
2773 | ||
2774 | SCM_KEYWORD (k_accessor, "accessor"); | |
2775 | SCM_KEYWORD (k_getter, "getter"); | |
2776 | ||
80662eda MD |
2777 | SCM |
2778 | scm_ensure_accessor (SCM name) | |
2779 | { | |
3f48638c AW |
2780 | SCM var, gf; |
2781 | ||
2782 | var = scm_module_variable (scm_current_module (), name); | |
2783 | if (SCM_VARIABLEP (var) && !SCM_UNBNDP (SCM_VARIABLE_REF (var))) | |
2784 | gf = SCM_VARIABLE_REF (var); | |
2785 | else | |
2786 | gf = SCM_BOOL_F; | |
2787 | ||
f8af5c6d | 2788 | if (!SCM_IS_A_P (gf, scm_class_accessor)) |
80662eda | 2789 | { |
1afff620 | 2790 | gf = scm_make (scm_list_3 (scm_class_generic, k_name, name)); |
f8af5c6d | 2791 | gf = scm_make (scm_list_5 (scm_class_accessor, |
1afff620 | 2792 | k_name, name, k_setter, gf)); |
80662eda | 2793 | } |
3f48638c | 2794 | |
80662eda MD |
2795 | return gf; |
2796 | } | |
2797 | ||
80662eda MD |
2798 | #ifdef GUILE_DEBUG |
2799 | /* | |
2800 | * Debugging utilities | |
2801 | */ | |
2802 | ||
398d8ee1 KN |
2803 | SCM_DEFINE (scm_pure_generic_p, "pure-generic?", 1, 0, 0, |
2804 | (SCM obj), | |
6bcefd15 | 2805 | "Return @code{#t} if @var{obj} is a pure generic.") |
398d8ee1 | 2806 | #define FUNC_NAME s_scm_pure_generic_p |
80662eda | 2807 | { |
7888309b | 2808 | return scm_from_bool (SCM_PUREGENERICP (obj)); |
80662eda | 2809 | } |
398d8ee1 | 2810 | #undef FUNC_NAME |
80662eda MD |
2811 | |
2812 | #endif /* GUILE_DEBUG */ | |
2813 | ||
2814 | /* | |
2815 | * Initialization | |
2816 | */ | |
2817 | ||
398d8ee1 KN |
2818 | SCM_DEFINE (scm_sys_goops_loaded, "%goops-loaded", 0, 0, 0, |
2819 | (), | |
6bcefd15 MG |
2820 | "Announce that GOOPS is loaded and perform initialization\n" |
2821 | "on the C level which depends on the loaded GOOPS modules.") | |
398d8ee1 | 2822 | #define FUNC_NAME s_scm_sys_goops_loaded |
80662eda MD |
2823 | { |
2824 | goops_loaded_p = 1; | |
86d31dfe | 2825 | var_compute_applicable_methods = |
f39448c5 | 2826 | scm_module_variable (scm_module_goops, sym_compute_applicable_methods); |
bef95911 | 2827 | var_slot_unbound = |
f39448c5 | 2828 | scm_module_variable (scm_module_goops, sym_slot_unbound); |
bef95911 | 2829 | var_slot_missing = |
f39448c5 | 2830 | scm_module_variable (scm_module_goops, sym_slot_missing); |
bef95911 | 2831 | var_compute_cpl = |
f39448c5 | 2832 | scm_module_variable (scm_module_goops, sym_compute_cpl); |
bef95911 | 2833 | var_no_applicable_method = |
f39448c5 | 2834 | scm_module_variable (scm_module_goops, sym_no_applicable_method); |
bef95911 | 2835 | var_change_class = |
f39448c5 | 2836 | scm_module_variable (scm_module_goops, sym_change_class); |
a48d60b1 | 2837 | setup_extended_primitive_generics (); |
80662eda MD |
2838 | return SCM_UNSPECIFIED; |
2839 | } | |
398d8ee1 | 2840 | #undef FUNC_NAME |
80662eda MD |
2841 | |
2842 | SCM scm_module_goops; | |
2843 | ||
abd28220 MV |
2844 | SCM |
2845 | scm_init_goops_builtins (void) | |
80662eda | 2846 | { |
abd28220 | 2847 | scm_module_goops = scm_current_module (); |
80662eda | 2848 | |
80662eda MD |
2849 | goops_rstate = scm_c_make_rstate ("GOOPS", 5); |
2850 | ||
2851 | #include "libguile/goops.x" | |
2852 | ||
bb764c0e | 2853 | hell = scm_calloc (hell_size * sizeof (*hell)); |
f39448c5 | 2854 | hell_mutex = scm_make_mutex (); |
80662eda MD |
2855 | |
2856 | create_basic_classes (); | |
2857 | create_standard_classes (); | |
2858 | create_smob_classes (); | |
2859 | create_struct_classes (); | |
2860 | create_port_classes (); | |
2861 | ||
2862 | { | |
4a655e50 | 2863 | SCM name = scm_from_latin1_symbol ("no-applicable-method"); |
f39448c5 AW |
2864 | scm_no_applicable_method = |
2865 | scm_make (scm_list_3 (scm_class_generic, k_name, name)); | |
80662eda MD |
2866 | DEFVAR (name, scm_no_applicable_method); |
2867 | } | |
abd28220 MV |
2868 | |
2869 | return SCM_UNSPECIFIED; | |
80662eda MD |
2870 | } |
2871 | ||
2872 | void | |
abd28220 | 2873 | scm_init_goops () |
80662eda | 2874 | { |
9a441ddb MV |
2875 | scm_c_define_gsubr ("%init-goops-builtins", 0, 0, 0, |
2876 | scm_init_goops_builtins); | |
80662eda | 2877 | } |
23437298 DH |
2878 | |
2879 | /* | |
2880 | Local Variables: | |
2881 | c-file-style: "gnu" | |
2882 | End: | |
2883 | */ |